staging: et131x: Put all .c files into one big file

Created one big .c file for the driver, moving the contents of all
driver .c files into it.

Signed-off-by: Mark Einon <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/et131x/Makefile

···
 #
 
 obj-$(CONFIG_ET131X) += et131x.o
-
-et131x-y :=	et1310_eeprom.o \
-		et1310_mac.o \
-		et1310_phy.o \
-		et1310_pm.o \
-		et1310_rx.o \
-		et1310_tx.o \
-		et131x_initpci.o \
-		et131x_ethtool.o \
-		et131x_isr.o \
-		et131x_netdev.o

drivers/staging/et131x/et1310_eeprom.c

···
-/*
- * Agere Systems Inc.
- * 10/100/1000 Base-T Ethernet Driver for the ET1301 and ET131x series MACs
- *
- * Copyright © 2005 Agere Systems Inc.
- * All rights reserved.
- *   http://www.agere.com
- *
- * Copyright (c) 2011 Mark Einon <[e-mail]>
- *
- *------------------------------------------------------------------------------
- *
- * et1310_eeprom.c - Code used to access the device's EEPROM
- *
- *------------------------------------------------------------------------------
- *
- * SOFTWARE LICENSE
- *
- * This software is provided subject to the following terms and conditions,
- * which you should read carefully before using the software.  Using this
- * software indicates your acceptance of these terms and conditions.  If you do
- * not agree with these terms and conditions, do not use the software.
- *
- * Copyright © 2005 Agere Systems Inc.
- * All rights reserved.
- *
- * Redistribution and use in source or binary forms, with or without
- * modifications, are permitted provided that the following conditions are met:
- *
- * . Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following Disclaimer as comments in the code as
- *    well as in the documentation and/or other materials provided with the
- *    distribution.
- *
- * . Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following Disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * . Neither the name of Agere Systems Inc. nor the names of the contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * Disclaimer
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  ANY
- * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN
- * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- */
-
-#include "et131x_defs.h"
-
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-
-#include <linux/sched.h>
-#include <linux/ptrace.h>
-#include <linux/ctype.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/in.h>
-#include <linux/delay.h>
-#include <linux/bitops.h>
-#include <linux/io.h>
-#include <asm/system.h>
-
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/if_arp.h>
-#include <linux/ioport.h>
-
-#include "et1310_phy.h"
-#include "et131x_adapter.h"
-#include "et131x.h"
-
-/*
- * EEPROM Defines
- */
-
-/* LBCIF Register Groups (addressed via 32-bit offsets) */
-#define LBCIF_DWORD0_GROUP       0xAC
-#define LBCIF_DWORD1_GROUP       0xB0
-
-/* LBCIF Registers (addressed via 8-bit offsets) */
-#define LBCIF_ADDRESS_REGISTER   0xAC
-#define LBCIF_DATA_REGISTER      0xB0
-#define LBCIF_CONTROL_REGISTER   0xB1
-#define LBCIF_STATUS_REGISTER    0xB2
-
-/* LBCIF Control Register Bits */
-#define LBCIF_CONTROL_SEQUENTIAL_READ   0x01
-#define LBCIF_CONTROL_PAGE_WRITE        0x02
-#define LBCIF_CONTROL_EEPROM_RELOAD     0x08
-#define LBCIF_CONTROL_TWO_BYTE_ADDR     0x20
-#define LBCIF_CONTROL_I2C_WRITE         0x40
-#define LBCIF_CONTROL_LBCIF_ENABLE      0x80
-
-/* LBCIF Status Register Bits */
-#define LBCIF_STATUS_PHY_QUEUE_AVAIL    0x01
-#define LBCIF_STATUS_I2C_IDLE           0x02
-#define LBCIF_STATUS_ACK_ERROR          0x04
-#define LBCIF_STATUS_GENERAL_ERROR      0x08
-#define LBCIF_STATUS_CHECKSUM_ERROR     0x40
-#define LBCIF_STATUS_EEPROM_PRESENT     0x80
-
-/* Miscellaneous Constraints */
-#define MAX_NUM_REGISTER_POLLS          1000
-#define MAX_NUM_WRITE_RETRIES           2
-
-static int eeprom_wait_ready(struct pci_dev *pdev, u32 *status)
-{
-	u32 reg;
-	int i;
-
-	/*
-	 * 1. Check LBCIF Status Register for bits 6 & 3:2 all equal to 0 and
-	 *    bits 7,1:0 both equal to 1, at least once after reset.
-	 *    Subsequent operations need only to check that bits 1:0 are equal
-	 *    to 1 prior to starting a single byte read/write
-	 */
-
-	for (i = 0; i < MAX_NUM_REGISTER_POLLS; i++) {
-		/* Read registers grouped in DWORD1 */
-		if (pci_read_config_dword(pdev, LBCIF_DWORD1_GROUP, &reg))
-			return -EIO;
-
-		/* I2C idle and Phy Queue Avail both true */
-		if ((reg & 0x3000) == 0x3000) {
-			if (status)
-				*status = reg;
-			return reg & 0xFF;
-		}
-	}
-	return -ETIMEDOUT;
-}
-
-
-/**
- * eeprom_write - Write a byte to the ET1310's EEPROM
- * @adapter: pointer to our private adapter structure
- * @addr: the address to write
- * @data: the value to write
- *
- * Returns 1 for a successful write.
- */
-static int eeprom_write(struct et131x_adapter *adapter, u32 addr, u8 data)
-{
-	struct pci_dev *pdev = adapter->pdev;
-	int index = 0;
-	int retries;
-	int err = 0;
-	int i2c_wack = 0;
-	int writeok = 0;
-	u32 status;
-	u32 val = 0;
-
-	/*
-	 * For an EEPROM, an I2C single byte write is defined as a START
-	 * condition followed by the device address, EEPROM address, one byte
-	 * of data and a STOP condition.  The STOP condition will trigger the
-	 * EEPROM's internally timed write cycle to the nonvolatile memory.
-	 * All inputs are disabled during this write cycle and the EEPROM will
-	 * not respond to any access until the internal write is complete.
-	 */
-
-	err = eeprom_wait_ready(pdev, NULL);
-	if (err)
-		return err;
-
-	 /*
-	 * 2. Write to the LBCIF Control Register:  bit 7=1, bit 6=1, bit 3=0,
-	 *    and bits 1:0 both =0.  Bit 5 should be set according to the
-	 *    type of EEPROM being accessed (1=two byte addressing, 0=one
-	 *    byte addressing).
-	 */
-	if (pci_write_config_byte(pdev, LBCIF_CONTROL_REGISTER,
-			LBCIF_CONTROL_LBCIF_ENABLE | LBCIF_CONTROL_I2C_WRITE))
-		return -EIO;
-
-	i2c_wack = 1;
-
-	/* Prepare EEPROM address for Step 3 */
-
-	for (retries = 0; retries < MAX_NUM_WRITE_RETRIES; retries++) {
-		/* Write the address to the LBCIF Address Register */
-		if (pci_write_config_dword(pdev, LBCIF_ADDRESS_REGISTER, addr))
-			break;
-		/*
-		 * Write the data to the LBCIF Data Register (the I2C write
-		 * will begin).
-		 */
-		if (pci_write_config_byte(pdev, LBCIF_DATA_REGISTER, data))
-			break;
-		/*
-		 * Monitor bit 1:0 of the LBCIF Status Register.  When bits
-		 * 1:0 are both equal to 1, the I2C write has completed and the
-		 * internal write cycle of the EEPROM is about to start.
-		 * (bits 1:0 = 01 is a legal state while waiting from both
-		 * equal to 1, but bits 1:0 = 10 is invalid and implies that
-		 * something is broken).
-		 */
-		err = eeprom_wait_ready(pdev, &status);
-		if (err < 0)
-			return 0;
-
-		/*
-		 * Check bit 3 of the LBCIF Status Register.  If  equal to 1,
-		 * an error has occurred.Don't break here if we are revision
-		 * 1, this is so we do a blind write for load bug.
-		 */
-		if ((status & LBCIF_STATUS_GENERAL_ERROR)
-			&& adapter->pdev->revision == 0)
-			break;
-
-		/*
-		 * Check bit 2 of the LBCIF Status Register.  If equal to 1 an
-		 * ACK error has occurred on the address phase of the write.
-		 * This could be due to an actual hardware failure or the
-		 * EEPROM may still be in its internal write cycle from a
-		 * previous write. This write operation was ignored and must be
-		  *repeated later.
-		 */
-		if (status & LBCIF_STATUS_ACK_ERROR) {
-			/*
-			 * This could be due to an actual hardware failure
-			 * or the EEPROM may still be in its internal write
-			 * cycle from a previous write. This write operation
-			 * was ignored and must be repeated later.
-			 */
-			udelay(10);
-			continue;
-		}
-
-		writeok = 1;
-		break;
-	}
-
-	/*
-	 * Set bit 6 of the LBCIF Control Register = 0.
-	 */
-	udelay(10);
-
-	while (i2c_wack) {
-		if (pci_write_config_byte(pdev, LBCIF_CONTROL_REGISTER,
-			LBCIF_CONTROL_LBCIF_ENABLE))
-			writeok = 0;
-
-		/* Do read until internal ACK_ERROR goes away meaning write
-		 * completed
-		 */
-		do {
-			pci_write_config_dword(pdev,
-					       LBCIF_ADDRESS_REGISTER,
-					       addr);
-			do {
-				pci_read_config_dword(pdev,
-					LBCIF_DATA_REGISTER, &val);
-			} while ((val & 0x00010000) == 0);
-		} while (val & 0x00040000);
-
-		if ((val & 0xFF00) != 0xC000 || index == 10000)
-			break;
-		index++;
-	}
-	return writeok ? 0 : -EIO;
-}
-
-/**
- * eeprom_read - Read a byte from the ET1310's EEPROM
- * @adapter: pointer to our private adapter structure
- * @addr: the address from which to read
- * @pdata: a pointer to a byte in which to store the value of the read
- * @eeprom_id: the ID of the EEPROM
- * @addrmode: how the EEPROM is to be accessed
- *
- * Returns 1 for a successful read
- */
-static int eeprom_read(struct et131x_adapter *adapter, u32 addr, u8 *pdata)
-{
-	struct pci_dev *pdev = adapter->pdev;
-	int err;
-	u32 status;
-
-	/*
-	 * A single byte read is similar to the single byte write, with the
-	 * exception of the data flow:
-	 */
-
-	err = eeprom_wait_ready(pdev, NULL);
-	if (err)
-		return err;
-	/*
-	 * Write to the LBCIF Control Register:  bit 7=1, bit 6=0, bit 3=0,
-	 * and bits 1:0 both =0.  Bit 5 should be set according to the type
-	 * of EEPROM being accessed (1=two byte addressing, 0=one byte
-	 * addressing).
-	 */
-	if (pci_write_config_byte(pdev, LBCIF_CONTROL_REGISTER,
-				  LBCIF_CONTROL_LBCIF_ENABLE))
-		return -EIO;
-	/*
-	 * Write the address to the LBCIF Address Register (I2C read will
-	 * begin).
-	 */
-	if (pci_write_config_dword(pdev, LBCIF_ADDRESS_REGISTER, addr))
-		return -EIO;
-	/*
-	 * Monitor bit 0 of the LBCIF Status Register.  When = 1, I2C read
-	 * is complete. (if bit 1 =1 and bit 0 stays = 0, a hardware failure
-	 * has occurred).
-	 */
-	err = eeprom_wait_ready(pdev, &status);
-	if (err < 0)
-		return err;
-	/*
-	 * Regardless of error status, read data byte from LBCIF Data
-	 * Register.
-	 */
-	*pdata = err;
-	/*
-	 * Check bit 2 of the LBCIF Status Register.  If = 1,
-	 * then an error has occurred.
-	 */
-	return (status & LBCIF_STATUS_ACK_ERROR) ? -EIO : 0;
-}
-
-int et131x_init_eeprom(struct et131x_adapter *adapter)
-{
-	struct pci_dev *pdev = adapter->pdev;
-	u8 eestatus;
-
-	/* We first need to check the EEPROM Status code located at offset
-	 * 0xB2 of config space
-	 */
-	pci_read_config_byte(pdev, ET1310_PCI_EEPROM_STATUS,
-				      &eestatus);
-
-	/* THIS IS A WORKAROUND:
-	 * I need to call this function twice to get my card in a
-	 * LG M1 Express Dual running. I tried also a msleep before this
-	 * function, because I thougth there could be some time condidions
-	 * but it didn't work. Call the whole function twice also work.
-	 */
-	if (pci_read_config_byte(pdev, ET1310_PCI_EEPROM_STATUS, &eestatus)) {
-		dev_err(&pdev->dev,
-		       "Could not read PCI config space for EEPROM Status\n");
-		return -EIO;
-	}
-
-	/* Determine if the error(s) we care about are present. If they are
-	 * present we need to fail.
-	 */
-	if (eestatus & 0x4C) {
-		int write_failed = 0;
-		if (pdev->revision == 0x01) {
-			int	i;
-			static const u8 eedata[4] = { 0xFE, 0x13, 0x10, 0xFF };
-
-			/* Re-write the first 4 bytes if we have an eeprom
-			 * present and the revision id is 1, this fixes the
-			 * corruption seen with 1310 B Silicon
-			 */
-			for (i = 0; i < 3; i++)
-				if (eeprom_write(adapter, i, eedata[i]) < 0)
-					write_failed = 1;
-		}
-		if (pdev->revision  != 0x01 || write_failed) {
-			dev_err(&pdev->dev,
-			    "Fatal EEPROM Status Error - 0x%04x\n", eestatus);
-
-			/* This error could mean that there was an error
-			 * reading the eeprom or that the eeprom doesn't exist.
-			 * We will treat each case the same and not try to
-			 * gather additional information that normally would
-			 * come from the eeprom, like MAC Address
-			 */
-			adapter->has_eeprom = 0;
-			return -EIO;
-		}
-	}
-	adapter->has_eeprom = 1;
-
-	/* Read the EEPROM for information regarding LED behavior. Refer to
-	 * ET1310_phy.c, et131x_xcvr_init(), for its use.
-	 */
-	eeprom_read(adapter, 0x70, &adapter->eeprom_data[0]);
-	eeprom_read(adapter, 0x71, &adapter->eeprom_data[1]);
-
-	if (adapter->eeprom_data[0] != 0xcd)
-		/* Disable all optional features */
-		adapter->eeprom_data[1] = 0x00;
-
-	return 0;
-}

drivers/staging/et131x/et1310_mac.c

···
-/*
- * Agere Systems Inc.
- * 10/100/1000 Base-T Ethernet Driver for the ET1301 and ET131x series MACs
- *
- * Copyright © 2005 Agere Systems Inc.
- * All rights reserved.
- *   http://www.agere.com
- *
- * Copyright (c) 2011 Mark Einon <[e-mail]>
- *
- *------------------------------------------------------------------------------
- *
- * et1310_mac.c - All code and routines pertaining to the MAC
- *
- *------------------------------------------------------------------------------
- *
- * SOFTWARE LICENSE
- *
- * This software is provided subject to the following terms and conditions,
- * which you should read carefully before using the software.  Using this
- * software indicates your acceptance of these terms and conditions.  If you do
- * not agree with these terms and conditions, do not use the software.
- *
- * Copyright © 2005 Agere Systems Inc.
- * All rights reserved.
- *
- * Redistribution and use in source or binary forms, with or without
- * modifications, are permitted provided that the following conditions are met:
- *
- * . Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following Disclaimer as comments in the code as
- *    well as in the documentation and/or other materials provided with the
- *    distribution.
- *
- * . Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following Disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * . Neither the name of Agere Systems Inc. nor the names of the contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * Disclaimer
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  ANY
- * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN
- * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- */
-
-#include "et131x_defs.h"
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-
-#include <linux/sched.h>
-#include <linux/ptrace.h>
-#include <linux/ctype.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/in.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/bitops.h>
-#include <linux/pci.h>
-#include <asm/system.h>
-
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/if_arp.h>
-#include <linux/ioport.h>
-#include <linux/crc32.h>
-#include <linux/phy.h>
-
-#include "et1310_phy.h"
-#include "et131x_adapter.h"
-#include "et131x.h"
-
-#define COUNTER_WRAP_16_BIT 0x10000
-#define COUNTER_WRAP_12_BIT 0x1000
-
-/**
- * et1310_config_mac_regs1 - Initialize the first part of MAC regs
- * @adapter: pointer to our adapter structure
- */
-void et1310_config_mac_regs1(struct et131x_adapter *adapter)
-{
-	struct mac_regs __iomem *macregs = &adapter->regs->mac;
-	u32 station1;
-	u32 station2;
-	u32 ipg;
-
-	/* First we need to reset everything.  Write to MAC configuration
-	 * register 1 to perform reset.
-	 */
-	writel(0xC00F0000, &macregs->cfg1);
-
-	/* Next lets configure the MAC Inter-packet gap register */
-	ipg = 0x38005860;		/* IPG1 0x38 IPG2 0x58 B2B 0x60 */
-	ipg |= 0x50 << 8;		/* ifg enforce 0x50 */
-	writel(ipg, &macregs->ipg);
-
-	/* Next lets configure the MAC Half Duplex register */
-	/* BEB trunc 0xA, Ex Defer, Rexmit 0xF Coll 0x37 */
-	writel(0x00A1F037, &macregs->hfdp);
-
-	/* Next lets configure the MAC Interface Control register */
-	writel(0, &macregs->if_ctrl);
-
-	/* Let's move on to setting up the mii management configuration */
-	writel(0x07, &macregs->mii_mgmt_cfg);	/* Clock reset 0x7 */
-
-	/* Next lets configure the MAC Station Address register.  These
-	 * values are read from the EEPROM during initialization and stored
-	 * in the adapter structure.  We write what is stored in the adapter
-	 * structure to the MAC Station Address registers high and low.  This
-	 * station address is used for generating and checking pause control
-	 * packets.
-	 */
-	station2 = (adapter->addr[1] << ET_MAC_STATION_ADDR2_OC2_SHIFT) |
-		   (adapter->addr[0] << ET_MAC_STATION_ADDR2_OC1_SHIFT);
-	station1 = (adapter->addr[5] << ET_MAC_STATION_ADDR1_OC6_SHIFT) |
-		   (adapter->addr[4] << ET_MAC_STATION_ADDR1_OC5_SHIFT) |
-		   (adapter->addr[3] << ET_MAC_STATION_ADDR1_OC4_SHIFT) |
-		    adapter->addr[2];
-	writel(station1, &macregs->station_addr_1);
-	writel(station2, &macregs->station_addr_2);
-
-	/* Max ethernet packet in bytes that will passed by the mac without
-	 * being truncated.  Allow the MAC to pass 4 more than our max packet
-	 * size.  This is 4 for the Ethernet CRC.
-	 *
-	 * Packets larger than (registry_jumbo_packet) that do not contain a
-	 * VLAN ID will be dropped by the Rx function.
-	 */
-	writel(adapter->registry_jumbo_packet + 4, &macregs->max_fm_len);
-
-	/* clear out MAC config reset */
-	writel(0, &macregs->cfg1);
-}
-
-/**
- * et1310_config_mac_regs2 - Initialize the second part of MAC regs
- * @adapter: pointer to our adapter structure
- */
-void et1310_config_mac_regs2(struct et131x_adapter *adapter)
-{
-	int32_t delay = 0;
-	struct mac_regs __iomem *mac = &adapter->regs->mac;
-	struct phy_device *phydev = adapter->phydev;
-	u32 cfg1;
-	u32 cfg2;
-	u32 ifctrl;
-	u32 ctl;
-
-	ctl = readl(&adapter->regs->txmac.ctl);
-	cfg1 = readl(&mac->cfg1);
-	cfg2 = readl(&mac->cfg2);
-	ifctrl = readl(&mac->if_ctrl);
-
-	/* Set up the if mode bits */
-	cfg2 &= ~0x300;
-	if (phydev && phydev->speed == SPEED_1000) {
-		cfg2 |= 0x200;
-		/* Phy mode bit */
-		ifctrl &= ~(1 << 24);
-	} else {
-		cfg2 |= 0x100;
-		ifctrl |= (1 << 24);
-	}
-
-	/* We need to enable Rx/Tx */
-	cfg1 |= CFG1_RX_ENABLE | CFG1_TX_ENABLE | CFG1_TX_FLOW;
-	/* Initialize loop back to off */
-	cfg1 &= ~(CFG1_LOOPBACK | CFG1_RX_FLOW);
-	if (adapter->flowcontrol == FLOW_RXONLY ||
-				adapter->flowcontrol == FLOW_BOTH)
-		cfg1 |= CFG1_RX_FLOW;
-	writel(cfg1, &mac->cfg1);
-
-	/* Now we need to initialize the MAC Configuration 2 register */
-	/* preamble 7, check length, huge frame off, pad crc, crc enable
-	   full duplex off */
-	cfg2 |= 0x7016;
-	cfg2 &= ~0x0021;
-
-	/* Turn on duplex if needed */
-	if (phydev && phydev->duplex == DUPLEX_FULL)
-		cfg2 |= 0x01;
-
-	ifctrl &= ~(1 << 26);
-	if (phydev && phydev->duplex == DUPLEX_HALF)
-		ifctrl |= (1<<26);	/* Enable ghd */
-
-	writel(ifctrl, &mac->if_ctrl);
-	writel(cfg2, &mac->cfg2);
-
-	do {
-		udelay(10);
-		delay++;
-		cfg1 = readl(&mac->cfg1);
-	} while ((cfg1 & CFG1_WAIT) != CFG1_WAIT && delay < 100);
-
-	if (delay == 100) {
-		dev_warn(&adapter->pdev->dev,
-		    "Syncd bits did not respond correctly cfg1 word 0x%08x\n",
-			cfg1);
-	}
-
-	/* Enable txmac */
-	ctl |= 0x09;	/* TX mac enable, FC disable */
-	writel(ctl, &adapter->regs->txmac.ctl);
-
-	/* Ready to start the RXDMA/TXDMA engine */
-	if (adapter->flags & fMP_ADAPTER_LOWER_POWER) {
-		et131x_rx_dma_enable(adapter);
-		et131x_tx_dma_enable(adapter);
-	}
-}
-
-void et1310_config_rxmac_regs(struct et131x_adapter *adapter)
-{
-	struct rxmac_regs __iomem *rxmac = &adapter->regs->rxmac;
-	struct phy_device *phydev = adapter->phydev;
-	u32 sa_lo;
-	u32 sa_hi = 0;
-	u32 pf_ctrl = 0;
-
-	/* Disable the MAC while it is being configured (also disable WOL) */
-	writel(0x8, &rxmac->ctrl);
-
-	/* Initialize WOL to disabled. */
-	writel(0, &rxmac->crc0);
-	writel(0, &rxmac->crc12);
-	writel(0, &rxmac->crc34);
-
-	/* We need to set the WOL mask0 - mask4 next.  We initialize it to
-	 * its default Values of 0x00000000 because there are not WOL masks
-	 * as of this time.
-	 */
-	writel(0, &rxmac->mask0_word0);
-	writel(0, &rxmac->mask0_word1);
-	writel(0, &rxmac->mask0_word2);
-	writel(0, &rxmac->mask0_word3);
-
-	writel(0, &rxmac->mask1_word0);
-	writel(0, &rxmac->mask1_word1);
-	writel(0, &rxmac->mask1_word2);
-	writel(0, &rxmac->mask1_word3);
-
-	writel(0, &rxmac->mask2_word0);
-	writel(0, &rxmac->mask2_word1);
-	writel(0, &rxmac->mask2_word2);
-	writel(0, &rxmac->mask2_word3);
-
-	writel(0, &rxmac->mask3_word0);
-	writel(0, &rxmac->mask3_word1);
-	writel(0, &rxmac->mask3_word2);
-	writel(0, &rxmac->mask3_word3);
-
-	writel(0, &rxmac->mask4_word0);
-	writel(0, &rxmac->mask4_word1);
-	writel(0, &rxmac->mask4_word2);
-	writel(0, &rxmac->mask4_word3);
-
-	/* Lets setup the WOL Source Address */
-	sa_lo = (adapter->addr[2] << ET_WOL_LO_SA3_SHIFT) |
-		(adapter->addr[3] << ET_WOL_LO_SA4_SHIFT) |
-		(adapter->addr[4] << ET_WOL_LO_SA5_SHIFT) |
-		 adapter->addr[5];
-	writel(sa_lo, &rxmac->sa_lo);
-
-	sa_hi = (u32) (adapter->addr[0] << ET_WOL_HI_SA1_SHIFT) |
-		       adapter->addr[1];
-	writel(sa_hi, &rxmac->sa_hi);
-
-	/* Disable all Packet Filtering */
-	writel(0, &rxmac->pf_ctrl);
-
-	/* Let's initialize the Unicast Packet filtering address */
-	if (adapter->packet_filter & ET131X_PACKET_TYPE_DIRECTED) {
-		et1310_setup_device_for_unicast(adapter);
-		pf_ctrl |= 4;	/* Unicast filter */
-	} else {
-		writel(0, &rxmac->uni_pf_addr1);
-		writel(0, &rxmac->uni_pf_addr2);
-		writel(0, &rxmac->uni_pf_addr3);
-	}
-
-	/* Let's initialize the Multicast hash */
-	if (!(adapter->packet_filter & ET131X_PACKET_TYPE_ALL_MULTICAST)) {
-		pf_ctrl |= 2;	/* Multicast filter */
-		et1310_setup_device_for_multicast(adapter);
-	}
-
-	/* Runt packet filtering.  Didn't work in version A silicon. */
-	pf_ctrl |= (NIC_MIN_PACKET_SIZE + 4) << 16;
-	pf_ctrl |= 8;	/* Fragment filter */
-
-	if (adapter->registry_jumbo_packet > 8192)
-		/* In order to transmit jumbo packets greater than 8k, the
-		 * FIFO between RxMAC and RxDMA needs to be reduced in size
-		 * to (16k - Jumbo packet size).  In order to implement this,
-		 * we must use "cut through" mode in the RxMAC, which chops
-		 * packets down into segments which are (max_size * 16).  In
-		 * this case we selected 256 bytes, since this is the size of
-		 * the PCI-Express TLP's that the 1310 uses.
-		 *
-		 * seg_en on, fc_en off, size 0x10
-		 */
-		writel(0x41, &rxmac->mcif_ctrl_max_seg);
-	else
-		writel(0, &rxmac->mcif_ctrl_max_seg);
-
-	/* Initialize the MCIF water marks */
-	writel(0, &rxmac->mcif_water_mark);
-
-	/*  Initialize the MIF control */
-	writel(0, &rxmac->mif_ctrl);
-
-	/* Initialize the Space Available Register */
-	writel(0, &rxmac->space_avail);
-
-	/* Initialize the the mif_ctrl register
-	 * bit 3:  Receive code error. One or more nibbles were signaled as
-	 *	   errors  during the reception of the packet.  Clear this
-	 *	   bit in Gigabit, set it in 100Mbit.  This was derived
-	 *	   experimentally at UNH.
-	 * bit 4:  Receive CRC error. The packet's CRC did not match the
-	 *	   internally generated CRC.
-	 * bit 5:  Receive length check error. Indicates that frame length
-	 *	   field value in the packet does not match the actual data
-	 *	   byte length and is not a type field.
-	 * bit 16: Receive frame truncated.
-	 * bit 17: Drop packet enable
-	 */
-	if (phydev && phydev->speed == SPEED_100)
-		writel(0x30038, &rxmac->mif_ctrl);
-	else
-		writel(0x30030, &rxmac->mif_ctrl);
-
-	/* Finally we initialize RxMac to be enabled & WOL disabled.  Packet
-	 * filter is always enabled since it is where the runt packets are
-	 * supposed to be dropped.  For version A silicon, runt packet
-	 * dropping doesn't work, so it is disabled in the pf_ctrl register,
-	 * but we still leave the packet filter on.
-	 */
-	writel(pf_ctrl, &rxmac->pf_ctrl);
-	writel(0x9, &rxmac->ctrl);
-}
-
-void et1310_config_txmac_regs(struct et131x_adapter *adapter)
-{
-	struct txmac_regs __iomem *txmac = &adapter->regs->txmac;
-
-	/* We need to update the Control Frame Parameters
-	 * cfpt - control frame pause timer set to 64 (0x40)
-	 * cfep - control frame extended pause timer set to 0x0
-	 */
-	if (adapter->flowcontrol == FLOW_NONE)
-		writel(0, &txmac->cf_param);
-	else
-		writel(0x40, &txmac->cf_param);
-}
-
-void et1310_config_macstat_regs(struct et131x_adapter *adapter)
-{
-	struct macstat_regs __iomem *macstat =
-		&adapter->regs->macstat;
-
-	/* Next we need to initialize all the macstat registers to zero on
-	 * the device.
-	 */
-	writel(0, &macstat->txrx_0_64_byte_frames);
-	writel(0, &macstat->txrx_65_127_byte_frames);
-	writel(0, &macstat->txrx_128_255_byte_frames);
-	writel(0, &macstat->txrx_256_511_byte_frames);
-	writel(0, &macstat->txrx_512_1023_byte_frames);
-	writel(0, &macstat->txrx_1024_1518_byte_frames);
-	writel(0, &macstat->txrx_1519_1522_gvln_frames);
-
-	writel(0, &macstat->rx_bytes);
-	writel(0, &macstat->rx_packets);
-	writel(0, &macstat->rx_fcs_errs);
-	writel(0, &macstat->rx_multicast_packets);
-	writel(0, &macstat->rx_broadcast_packets);
-	writel(0, &macstat->rx_control_frames);
-	writel(0, &macstat->rx_pause_frames);
-	writel(0, &macstat->rx_unknown_opcodes);
-	writel(0, &macstat->rx_align_errs);
-	writel(0, &macstat->rx_frame_len_errs);
-	writel(0, &macstat->rx_code_errs);
-	writel(0, &macstat->rx_carrier_sense_errs);
-	writel(0, &macstat->rx_undersize_packets);
-	writel(0, &macstat->rx_oversize_packets);
-	writel(0, &macstat->rx_fragment_packets);
-	writel(0, &macstat->rx_jabbers);
-	writel(0, &macstat->rx_drops);
-
-	writel(0, &macstat->tx_bytes);
-	writel(0, &macstat->tx_packets);
-	writel(0, &macstat->tx_multicast_packets);
-	writel(0, &macstat->tx_broadcast_packets);
-	writel(0, &macstat->tx_pause_frames);
-	writel(0, &macstat->tx_deferred);
-	writel(0, &macstat->tx_excessive_deferred);
-	writel(0, &macstat->tx_single_collisions);
-	writel(0, &macstat->tx_multiple_collisions);
-	writel(0, &macstat->tx_late_collisions);
-	writel(0, &macstat->tx_excessive_collisions);
-	writel(0, &macstat->tx_total_collisions);
-	writel(0, &macstat->tx_pause_honored_frames);
-	writel(0, &macstat->tx_drops);
-	writel(0, &macstat->tx_jabbers);
-	writel(0, &macstat->tx_fcs_errs);
-	writel(0, &macstat->tx_control_frames);
-	writel(0, &macstat->tx_oversize_frames);
-	writel(0, &macstat->tx_undersize_frames);
-	writel(0, &macstat->tx_fragments);
-	writel(0, &macstat->carry_reg1);
-	writel(0, &macstat->carry_reg2);
-
-	/* Unmask any counters that we want to track the overflow of.
-	 * Initially this will be all counters.  It may become clear later
-	 * that we do not need to track all counters.
-	 */
-	writel(0xFFFFBE32, &macstat->carry_reg1_mask);
-	writel(0xFFFE7E8B, &macstat->carry_reg2_mask);
-}
-
-void et1310_config_flow_control(struct et131x_adapter *adapter)
-{
-	struct phy_device *phydev = adapter->phydev;
-
-	if (phydev->duplex == DUPLEX_HALF) {
-		adapter->flowcontrol = FLOW_NONE;
-	} else {
-		char remote_pause, remote_async_pause;
-
-		et1310_phy_access_mii_bit(adapter,
-				TRUEPHY_BIT_READ, 5, 10, &remote_pause);
-		et1310_phy_access_mii_bit(adapter,
-				TRUEPHY_BIT_READ, 5, 11,
-				&remote_async_pause);
-
-		if ((remote_pause == TRUEPHY_BIT_SET) &&
-		    (remote_async_pause == TRUEPHY_BIT_SET)) {
-			adapter->flowcontrol = adapter->wanted_flow;
-		} else if ((remote_pause == TRUEPHY_BIT_SET) &&
-			   (remote_async_pause == TRUEPHY_BIT_CLEAR)) {
-			if (adapter->wanted_flow == FLOW_BOTH)
-				adapter->flowcontrol = FLOW_BOTH;
-			else
-				adapter->flowcontrol = FLOW_NONE;
-		} else if ((remote_pause == TRUEPHY_BIT_CLEAR) &&
-			   (remote_async_pause == TRUEPHY_BIT_CLEAR)) {
-			adapter->flowcontrol = FLOW_NONE;
-		} else {/* if (remote_pause == TRUEPHY_CLEAR_BIT &&
-			       remote_async_pause == TRUEPHY_SET_BIT) */
-			if (adapter->wanted_flow == FLOW_BOTH)
-				adapter->flowcontrol = FLOW_RXONLY;
-			else
-				adapter->flowcontrol = FLOW_NONE;
-		}
-	}
-}
-
-/**
- * et1310_update_macstat_host_counters - Update the local copy of the statistics
- * @adapter: pointer to the adapter structure
- */
-void et1310_update_macstat_host_counters(struct et131x_adapter *adapter)
-{
-	struct ce_stats *stats = &adapter->stats;
-	struct macstat_regs __iomem *macstat =
-		&adapter->regs->macstat;
-
-	stats->tx_collisions	       += readl(&macstat->tx_total_collisions);
-	stats->tx_first_collisions     += readl(&macstat->tx_single_collisions);
-	stats->tx_deferred	       += readl(&macstat->tx_deferred);
-	stats->tx_excessive_collisions +=
-				readl(&macstat->tx_multiple_collisions);
-	stats->tx_late_collisions      += readl(&macstat->tx_late_collisions);
-	stats->tx_underflows	       += readl(&macstat->tx_undersize_frames);
-	stats->tx_max_pkt_errs	       += readl(&macstat->tx_oversize_frames);
-
-	stats->rx_align_errs        += readl(&macstat->rx_align_errs);
-	stats->rx_crc_errs          += readl(&macstat->rx_code_errs);
-	stats->rcvd_pkts_dropped    += readl(&macstat->rx_drops);
-	stats->rx_overflows         += readl(&macstat->rx_oversize_packets);
-	stats->rx_code_violations   += readl(&macstat->rx_fcs_errs);
-	stats->rx_length_errs       += readl(&macstat->rx_frame_len_errs);
-	stats->rx_other_errs        += readl(&macstat->rx_fragment_packets);
-}
-
-/**
- * et1310_handle_macstat_interrupt
- * @adapter: pointer to the adapter structure
- *
- * One of the MACSTAT counters has wrapped.  Update the local copy of
- * the statistics held in the adapter structure, checking the "wrap"
- * bit for each counter.
- */
-void et1310_handle_macstat_interrupt(struct et131x_adapter *adapter)
-{
-	u32 carry_reg1;
-	u32 carry_reg2;
-
-	/* Read the interrupt bits from the register(s).  These are Clear On
-	 * Write.
-	 */
-	carry_reg1 = readl(&adapter->regs->macstat.carry_reg1);
-	carry_reg2 = readl(&adapter->regs->macstat.carry_reg2);
-
-	writel(carry_reg1, &adapter->regs->macstat.carry_reg1);
-	writel(carry_reg2, &adapter->regs->macstat.carry_reg2);
-
-	/* We need to do update the host copy of all the MAC_STAT counters.
-	 * For each counter, check it's overflow bit.  If the overflow bit is
-	 * set, then increment the host version of the count by one complete
-	 * revolution of the counter.  This routine is called when the counter
-	 * block indicates that one of the counters has wrapped.
-	 */
-	if (carry_reg1 & (1 << 14))
-		adapter->stats.rx_code_violations	+= COUNTER_WRAP_16_BIT;
-	if (carry_reg1 & (1 << 8))
-		adapter->stats.rx_align_errs	+= COUNTER_WRAP_12_BIT;
-	if (carry_reg1 & (1 << 7))
-		adapter->stats.rx_length_errs	+= COUNTER_WRAP_16_BIT;
-	if (carry_reg1 & (1 << 2))
-		adapter->stats.rx_other_errs	+= COUNTER_WRAP_16_BIT;
-	if (carry_reg1 & (1 << 6))
-		adapter->stats.rx_crc_errs	+= COUNTER_WRAP_16_BIT;
-	if (carry_reg1 & (1 << 3))
-		adapter->stats.rx_overflows	+= COUNTER_WRAP_16_BIT;
-	if (carry_reg1 & (1 << 0))
-		adapter->stats.rcvd_pkts_dropped	+= COUNTER_WRAP_16_BIT;
-	if (carry_reg2 & (1 << 16))
-		adapter->stats.tx_max_pkt_errs	+= COUNTER_WRAP_12_BIT;
-	if (carry_reg2 & (1 << 15))
-		adapter->stats.tx_underflows	+= COUNTER_WRAP_12_BIT;
-	if (carry_reg2 & (1 << 6))
-		adapter->stats.tx_first_collisions += COUNTER_WRAP_12_BIT;
-	if (carry_reg2 & (1 << 8))
-		adapter->stats.tx_deferred	+= COUNTER_WRAP_12_BIT;
-	if (carry_reg2 & (1 << 5))
-		adapter->stats.tx_excessive_collisions += COUNTER_WRAP_12_BIT;
-	if (carry_reg2 & (1 << 4))
-		adapter->stats.tx_late_collisions	+= COUNTER_WRAP_12_BIT;
-	if (carry_reg2 & (1 << 2))
-		adapter->stats.tx_collisions	+= COUNTER_WRAP_12_BIT;
-}
-
-void et1310_setup_device_for_multicast(struct et131x_adapter *adapter)
-{
-	struct rxmac_regs __iomem *rxmac = &adapter->regs->rxmac;
-	uint32_t nIndex;
-	uint32_t result;
-	uint32_t hash1 = 0;
-	uint32_t hash2 = 0;
-	uint32_t hash3 = 0;
-	uint32_t hash4 = 0;
-	u32 pm_csr;
-
-	/* If ET131X_PACKET_TYPE_MULTICAST is specified, then we provision
-	 * the multi-cast LIST.  If it is NOT specified, (and "ALL" is not
-	 * specified) then we should pass NO multi-cast addresses to the
-	 * driver.
-	 */
-	if (adapter->packet_filter & ET131X_PACKET_TYPE_MULTICAST) {
-		/* Loop through our multicast array and set up the device */
-		for (nIndex = 0; nIndex < adapter->multicast_addr_count;
-		     nIndex++) {
-			result = ether_crc(6, adapter->multicast_list[nIndex]);
-
-			result = (result & 0x3F800000) >> 23;
-
-			if (result < 32) {
-				hash1 |= (1 << result);
-			} else if ((31 < result) && (result < 64)) {
-				result -= 32;
-				hash2 |= (1 << result);
-			} else if ((63 < result) && (result < 96)) {
-				result -= 64;
-				hash3 |= (1 << result);
-			} else {
-				result -= 96;
-				hash4 |= (1 << result);
-			}
-		}
-	}
-
-	/* Write out the new hash to the device */
-	pm_csr = readl(&adapter->regs->global.pm_csr);
-	if (!et1310_in_phy_coma(adapter)) {
-		writel(hash1, &rxmac->multi_hash1);
-		writel(hash2, &rxmac->multi_hash2);
-		writel(hash3, &rxmac->multi_hash3);
-		writel(hash4, &rxmac->multi_hash4);
-	}
-}
-
-void et1310_setup_device_for_unicast(struct et131x_adapter *adapter)
-{
-	struct rxmac_regs __iomem *rxmac = &adapter->regs->rxmac;
-	u32 uni_pf1;
-	u32 uni_pf2;
-	u32 uni_pf3;
-	u32 pm_csr;
-
-	/* Set up unicast packet filter reg 3 to be the first two octets of
-	 * the MAC address for both address
-	 *
-	 * Set up unicast packet filter reg 2 to be the octets 2 - 5 of the
-	 * MAC address for second address
-	 *
-	 * Set up unicast packet filter reg 3 to be the octets 2 - 5 of the
-	 * MAC address for first address
-	 */
-	uni_pf3 = (adapter->addr[0] << ET_UNI_PF_ADDR2_1_SHIFT) |
-		  (adapter->addr[1] << ET_UNI_PF_ADDR2_2_SHIFT) |
-		  (adapter->addr[0] << ET_UNI_PF_ADDR1_1_SHIFT) |
-		   adapter->addr[1];
-
-	uni_pf2 = (adapter->addr[2] << ET_UNI_PF_ADDR2_3_SHIFT) |
-		  (adapter->addr[3] << ET_UNI_PF_ADDR2_4_SHIFT) |
-		  (adapter->addr[4] << ET_UNI_PF_ADDR2_5_SHIFT) |
-		   adapter->addr[5];
-
-	uni_pf1 = (adapter->addr[2] << ET_UNI_PF_ADDR1_3_SHIFT) |
-		  (adapter->addr[3] << ET_UNI_PF_ADDR1_4_SHIFT) |
-		  (adapter->addr[4] << ET_UNI_PF_ADDR1_5_SHIFT) |
-		   adapter->addr[5];
-
-	pm_csr = readl(&adapter->regs->global.pm_csr);
-	if (!et1310_in_phy_coma(adapter)) {
-		writel(uni_pf1, &rxmac->uni_pf_addr1);
-		writel(uni_pf2, &rxmac->uni_pf_addr2);
-		writel(uni_pf3, &rxmac->uni_pf_addr3);
-	}
-}

drivers/staging/et131x/et1310_phy.c

···
-/*
- * Agere Systems Inc.
- * 10/100/1000 Base-T Ethernet Driver for the ET1310 and ET131x series MACs
- *
- * Copyright * 2005 Agere Systems Inc.
- * All rights reserved.
- *   http://www.agere.com
- *
- * Copyright (c) 2011 Mark Einon <[e-mail]>
- *
- *------------------------------------------------------------------------------
- *
- * et1310_phy.c - Routines for configuring and accessing the PHY
- *
- *------------------------------------------------------------------------------
- *
- * SOFTWARE LICENSE
- *
- * This software is provided subject to the following terms and conditions,
- * which you should read carefully before using the software.  Using this
- * software indicates your acceptance of these terms and conditions.  If you do
- * not agree with these terms and conditions, do not use the software.
- *
- * Copyright * 2005 Agere Systems Inc.
- * All rights reserved.
- *
- * Redistribution and use in source or binary forms, with or without
- * modifications, are permitted provided that the following conditions are met:
- *
- * . Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following Disclaimer as comments in the code as
- *    well as in the documentation and/or other materials provided with the
- *    distribution.
- *
- * . Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following Disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * . Neither the name of Agere Systems Inc. nor the names of the contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * Disclaimer
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  ANY
- * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN
- * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- */
-
-#include "et131x_defs.h"
-
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-
-#include <linux/sched.h>
-#include <linux/ptrace.h>
-#include <linux/ctype.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/in.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/bitops.h>
-#include <asm/system.h>
-
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/if_arp.h>
-#include <linux/ioport.h>
-#include <linux/random.h>
-#include <linux/phy.h>
-
-#include "et1310_phy.h"
-
-#include "et131x_adapter.h"
-
-#include "et1310_address_map.h"
-#include "et1310_tx.h"
-#include "et1310_rx.h"
-
-#include "et131x.h"
-
-int et131x_mdio_read(struct mii_bus *bus, int phy_addr, int reg)
-{
-	struct net_device *netdev = bus->priv;
-	struct et131x_adapter *adapter = netdev_priv(netdev);
-	u16 value;
-	int ret;
-
-	ret = et131x_phy_mii_read(adapter, phy_addr, reg, &value);
-
-	if (ret < 0)
-		return ret;
-	else
-		return value;
-}
-
-int et131x_mdio_write(struct mii_bus *bus, int phy_addr, int reg, u16 value)
-{
-	struct net_device *netdev = bus->priv;
-	struct et131x_adapter *adapter = netdev_priv(netdev);
-
-	return et131x_mii_write(adapter, reg, value);
-}
-
-int et131x_mdio_reset(struct mii_bus *bus)
-{
-	struct net_device *netdev = bus->priv;
-	struct et131x_adapter *adapter = netdev_priv(netdev);
-
-	et131x_mii_write(adapter, MII_BMCR, BMCR_RESET);
-
-	return 0;
-}
-
-int et131x_mii_read(struct et131x_adapter *adapter, u8 reg, u16 *value)
-{
-	struct phy_device *phydev = adapter->phydev;
-
-	if (!phydev)
-		return -EIO;
-
-	return et131x_phy_mii_read(adapter, phydev->addr, reg, value);
-}
-
-/**
- * et131x_phy_mii_read - Read from the PHY through the MII Interface on the MAC
- * @adapter: pointer to our private adapter structure
- * @addr: the address of the transceiver
- * @reg: the register to read
- * @value: pointer to a 16-bit value in which the value will be stored
- *
- * Returns 0 on success, errno on failure (as defined in errno.h)
- */
-int et131x_phy_mii_read(struct et131x_adapter *adapter, u8 addr,
-	      u8 reg, u16 *value)
-{
-	struct mac_regs __iomem *mac = &adapter->regs->mac;
-	int status = 0;
-	u32 delay = 0;
-	u32 mii_addr;
-	u32 mii_cmd;
-	u32 mii_indicator;
-
-	/* Save a local copy of the registers we are dealing with so we can
-	 * set them back
-	 */
-	mii_addr = readl(&mac->mii_mgmt_addr);
-	mii_cmd = readl(&mac->mii_mgmt_cmd);
-
-	/* Stop the current operation */
-	writel(0, &mac->mii_mgmt_cmd);
-
-	/* Set up the register we need to read from on the correct PHY */
-	writel(MII_ADDR(addr, reg), &mac->mii_mgmt_addr);
-
-	writel(0x1, &mac->mii_mgmt_cmd);
-
-	do {
-		udelay(50);
-		delay++;
-		mii_indicator = readl(&mac->mii_mgmt_indicator);
-	} while ((mii_indicator & MGMT_WAIT) && delay < 50);
-
-	/* If we hit the max delay, we could not read the register */
-	if (delay == 50) {
-		dev_warn(&adapter->pdev->dev,
-			    "reg 0x%08x could not be read\n", reg);
-		dev_warn(&adapter->pdev->dev, "status is  0x%08x\n",
-			    mii_indicator);
-
-		status = -EIO;
-	}
-
-	/* If we hit here we were able to read the register and we need to
-	 * return the value to the caller */
-	*value = readl(&mac->mii_mgmt_stat) & 0xFFFF;
-
-	/* Stop the read operation */
-	writel(0, &mac->mii_mgmt_cmd);
-
-	/* set the registers we touched back to the state at which we entered
-	 * this function
-	 */
-	writel(mii_addr, &mac->mii_mgmt_addr);
-	writel(mii_cmd, &mac->mii_mgmt_cmd);
-
-	return status;
-}
-
-/**
- * et131x_mii_write - Write to a PHY register through the MII interface of the MAC
- * @adapter: pointer to our private adapter structure
- * @reg: the register to read
- * @value: 16-bit value to write
- *
- * FIXME: one caller in netdev still
- *
- * Return 0 on success, errno on failure (as defined in errno.h)
- */
-int et131x_mii_write(struct et131x_adapter *adapter, u8 reg, u16 value)
-{
-	struct mac_regs __iomem *mac = &adapter->regs->mac;
-	struct phy_device *phydev = adapter->phydev;
-	int status = 0;
-	u8 addr;
-	u32 delay = 0;
-	u32 mii_addr;
-	u32 mii_cmd;
-	u32 mii_indicator;
-
-	if (!phydev)
-		return -EIO;
-
-	addr = phydev->addr;
-
-	/* Save a local copy of the registers we are dealing with so we can
-	 * set them back
-	 */
-	mii_addr = readl(&mac->mii_mgmt_addr);
-	mii_cmd = readl(&mac->mii_mgmt_cmd);
-
-	/* Stop the current operation */
-	writel(0, &mac->mii_mgmt_cmd);
-
-	/* Set up the register we need to write to on the correct PHY */
-	writel(MII_ADDR(addr, reg), &mac->mii_mgmt_addr);
-
-	/* Add the value to write to the registers to the mac */
-	writel(value, &mac->mii_mgmt_ctrl);
-
-	do {
-		udelay(50);
-		delay++;
-		mii_indicator = readl(&mac->mii_mgmt_indicator);
-	} while ((mii_indicator & MGMT_BUSY) && delay < 100);
-
-	/* If we hit the max delay, we could not write the register */
-	if (delay == 100) {
-		u16 tmp;
-
-		dev_warn(&adapter->pdev->dev,
-		    "reg 0x%08x could not be written", reg);
-		dev_warn(&adapter->pdev->dev, "status is  0x%08x\n",
-			    mii_indicator);
-		dev_warn(&adapter->pdev->dev, "command is  0x%08x\n",
-			    readl(&mac->mii_mgmt_cmd));
-
-		et131x_mii_read(adapter, reg, &tmp);
-
-		status = -EIO;
-	}
-	/* Stop the write operation */
-	writel(0, &mac->mii_mgmt_cmd);
-
-	/*
-	 * set the registers we touched back to the state at which we entered
-	 * this function
-	 */
-	writel(mii_addr, &mac->mii_mgmt_addr);
-	writel(mii_cmd, &mac->mii_mgmt_cmd);
-
-	return status;
-}
-
-/**
- *	et1310_phy_power_down	-	PHY power control
- *	@adapter: device to control
- *	@down: true for off/false for back on
- *
- *	one hundred, ten, one thousand megs
- *	How would you like to have your LAN accessed
- *	Can't you see that this code processed
- *	Phy power, phy power..
- */
-void et1310_phy_power_down(struct et131x_adapter *adapter, bool down)
-{
-	u16 data;
-
-	et131x_mii_read(adapter, MII_BMCR, &data);
-	data &= ~BMCR_PDOWN;
-	if (down)
-		data |= BMCR_PDOWN;
-	et131x_mii_write(adapter, MII_BMCR, data);
-}
-
-/* Still used from _mac for BIT_READ */
-void et1310_phy_access_mii_bit(struct et131x_adapter *adapter, u16 action,
-			       u16 regnum, u16 bitnum, u8 *value)
-{
-	u16 reg;
-	u16 mask = 0x0001 << bitnum;
-
-	/* Read the requested register */
-	et131x_mii_read(adapter, regnum, &reg);
-
-	switch (action) {
-	case TRUEPHY_BIT_READ:
-		*value = (reg & mask) >> bitnum;
-		break;
-
-	case TRUEPHY_BIT_SET:
-		et131x_mii_write(adapter, regnum, reg | mask);
-		break;
-
-	case TRUEPHY_BIT_CLEAR:
-		et131x_mii_write(adapter, regnum, reg & ~mask);
-		break;
-
-	default:
-		break;
-	}
-}
-
-/**
- * et131x_xcvr_init - Init the phy if we are setting it into force mode
- * @adapter: pointer to our private adapter structure
- *
- */
-void et131x_xcvr_init(struct et131x_adapter *adapter)
-{
-	u16 imr;
-	u16 isr;
-	u16 lcr2;
-
-	et131x_mii_read(adapter, PHY_INTERRUPT_STATUS, &isr);
-	et131x_mii_read(adapter, PHY_INTERRUPT_MASK, &imr);
-
-	/* Set the link status interrupt only.  Bad behavior when link status
-	 * and auto neg are set, we run into a nested interrupt problem
-	 */
-	imr |= (ET_PHY_INT_MASK_AUTONEGSTAT &
-		ET_PHY_INT_MASK_LINKSTAT &
-		ET_PHY_INT_MASK_ENABLE);
-
-	et131x_mii_write(adapter, PHY_INTERRUPT_MASK, imr);
-
-	/* Set the LED behavior such that LED 1 indicates speed (off =
-	 * 10Mbits, blink = 100Mbits, on = 1000Mbits) and LED 2 indicates
-	 * link and activity (on for link, blink off for activity).
-	 *
-	 * NOTE: Some customizations have been added here for specific
-	 * vendors; The LED behavior is now determined by vendor data in the
-	 * EEPROM. However, the above description is the default.
-	 */
-	if ((adapter->eeprom_data[1] & 0x4) == 0) {
-		et131x_mii_read(adapter, PHY_LED_2, &lcr2);
-
-		lcr2 &= (ET_LED2_LED_100TX & ET_LED2_LED_1000T);
-		lcr2 |= (LED_VAL_LINKON_ACTIVE << LED_LINK_SHIFT);
-
-		if ((adapter->eeprom_data[1] & 0x8) == 0)
-			lcr2 |= (LED_VAL_1000BT_100BTX << LED_TXRX_SHIFT);
-		else
-			lcr2 |= (LED_VAL_LINKON << LED_TXRX_SHIFT);
-
-		et131x_mii_write(adapter, PHY_LED_2, lcr2);
-	}
-}
-

drivers/staging/et131x/et1310_pm.c

···
-/*
- * Agere Systems Inc.
- * 10/100/1000 Base-T Ethernet Driver for the ET1301 and ET131x series MACs
- *
- * Copyright © 2005 Agere Systems Inc.
- * All rights reserved.
- *   http://www.agere.com
- *
- * Copyright (c) 2011 Mark Einon <[e-mail]>
- *
- *------------------------------------------------------------------------------
- *
- * et1310_pm.c - All power management related code (not completely implemented)
- *
- *------------------------------------------------------------------------------
- *
- * SOFTWARE LICENSE
- *
- * This software is provided subject to the following terms and conditions,
- * which you should read carefully before using the software.  Using this
- * software indicates your acceptance of these terms and conditions.  If you do
- * not agree with these terms and conditions, do not use the software.
- *
- * Copyright © 2005 Agere Systems Inc.
- * All rights reserved.
- *
- * Redistribution and use in source or binary forms, with or without
- * modifications, are permitted provided that the following conditions are met:
- *
- * . Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following Disclaimer as comments in the code as
- *    well as in the documentation and/or other materials provided with the
- *    distribution.
- *
- * . Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following Disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * . Neither the name of Agere Systems Inc. nor the names of the contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * Disclaimer
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  ANY
- * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN
- * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- */
-
-#include "et131x_defs.h"
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-
-#include <linux/sched.h>
-#include <linux/ptrace.h>
-#include <linux/ctype.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/in.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/bitops.h>
-#include <asm/system.h>
-
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/if_arp.h>
-#include <linux/ioport.h>
-
-#include "et1310_phy.h"
-#include "et1310_rx.h"
-#include "et131x_adapter.h"
-#include "et131x.h"
-
-/**
- * et1310_in_phy_coma - check if the device is in phy coma
- * @adapter: pointer to our adapter structure
- *
- * Returns 0 if the device is not in phy coma, 1 if it is in phy coma
- */
-int et1310_in_phy_coma(struct et131x_adapter *adapter)
-{
-	u32 pmcsr;
-
-	pmcsr = readl(&adapter->regs->global.pm_csr);
-
-	return ET_PM_PHY_SW_COMA & pmcsr ? 1 : 0;
-}
-
-/**
- * et1310_enable_phy_coma - called when network cable is unplugged
- * @adapter: pointer to our adapter structure
- *
- * driver receive an phy status change interrupt while in D0 and check that
- * phy_status is down.
- *
- *          -- gate off JAGCore;
- *          -- set gigE PHY in Coma mode
- *          -- wake on phy_interrupt; Perform software reset JAGCore,
- *             re-initialize jagcore and gigE PHY
- *
- *      Add D0-ASPM-PhyLinkDown Support:
- *          -- while in D0, when there is a phy_interrupt indicating phy link
- *             down status, call the MPSetPhyComa routine to enter this active
- *             state power saving mode
- *          -- while in D0-ASPM-PhyLinkDown mode, when there is a phy_interrupt
- *       indicating linkup status, call the MPDisablePhyComa routine to
- *             restore JAGCore and gigE PHY
- */
-void et1310_enable_phy_coma(struct et131x_adapter *adapter)
-{
-	unsigned long flags;
-	u32 pmcsr;
-
-	pmcsr = readl(&adapter->regs->global.pm_csr);
-
-	/* Save the GbE PHY speed and duplex modes. Need to restore this
-	 * when cable is plugged back in
-	 */
-	/*
-	 * TODO - when PM is re-enabled, check if we need to
-	 * perform a similar task as this -
-	 * adapter->pdown_speed = adapter->ai_force_speed;
-	 * adapter->pdown_duplex = adapter->ai_force_duplex;
-	 */
-
-	/* Stop sending packets. */
-	spin_lock_irqsave(&adapter->send_hw_lock, flags);
-	adapter->flags |= fMP_ADAPTER_LOWER_POWER;
-	spin_unlock_irqrestore(&adapter->send_hw_lock, flags);
-
-	/* Wait for outstanding Receive packets */
-
-	et131x_disable_txrx(adapter->netdev);
-
-	/* Gate off JAGCore 3 clock domains */
-	pmcsr &= ~ET_PMCSR_INIT;
-	writel(pmcsr, &adapter->regs->global.pm_csr);
-
-	/* Program gigE PHY in to Coma mode */
-	pmcsr |= ET_PM_PHY_SW_COMA;
-	writel(pmcsr, &adapter->regs->global.pm_csr);
-}
-
-/**
- * et1310_disable_phy_coma - Disable the Phy Coma Mode
- * @adapter: pointer to our adapter structure
- */
-void et1310_disable_phy_coma(struct et131x_adapter *adapter)
-{
-	u32 pmcsr;
-
-	pmcsr = readl(&adapter->regs->global.pm_csr);
-
-	/* Disable phy_sw_coma register and re-enable JAGCore clocks */
-	pmcsr |= ET_PMCSR_INIT;
-	pmcsr &= ~ET_PM_PHY_SW_COMA;
-	writel(pmcsr, &adapter->regs->global.pm_csr);
-
-	/* Restore the GbE PHY speed and duplex modes;
-	 * Reset JAGCore; re-configure and initialize JAGCore and gigE PHY
-	 */
-	/* TODO - when PM is re-enabled, check if we need to
-	 * perform a similar task as this -
-	 * adapter->ai_force_speed = adapter->pdown_speed;
-	 * adapter->ai_force_duplex = adapter->pdown_duplex;
-	 */
-
-	/* Re-initialize the send structures */
-	et131x_init_send(adapter);
-
-	/* Reset the RFD list and re-start RU  */
-	et131x_reset_recv(adapter);
-
-	/* Bring the device back to the state it was during init prior to
-	 * autonegotiation being complete.  This way, when we get the auto-neg
-	 * complete interrupt, we can complete init by calling ConfigMacREGS2.
-	 */
-	et131x_soft_reset(adapter);
-
-	/* setup et1310 as per the documentation ?? */
-	et131x_adapter_setup(adapter);
-
-	/* Allow Tx to restart */
-	adapter->flags &= ~fMP_ADAPTER_LOWER_POWER;
-
-	et131x_enable_txrx(adapter->netdev);
-}
-

drivers/staging/et131x/et1310_rx.c

···
-/*
- * Agere Systems Inc.
- * 10/100/1000 Base-T Ethernet Driver for the ET1301 and ET131x series MACs
- *
- * Copyright © 2005 Agere Systems Inc.
- * All rights reserved.
- *   http://www.agere.com
- *
- * Copyright (c) 2011 Mark Einon <[e-mail]>
- *
- *------------------------------------------------------------------------------
- *
- * et1310_rx.c - Routines used to perform data reception
- *
- *------------------------------------------------------------------------------
- *
- * SOFTWARE LICENSE
- *
- * This software is provided subject to the following terms and conditions,
- * which you should read carefully before using the software.  Using this
- * software indicates your acceptance of these terms and conditions.  If you do
- * not agree with these terms and conditions, do not use the software.
- *
- * Copyright © 2005 Agere Systems Inc.
- * All rights reserved.
- *
- * Redistribution and use in source or binary forms, with or without
- * modifications, are permitted provided that the following conditions are met:
- *
- * . Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following Disclaimer as comments in the code as
- *    well as in the documentation and/or other materials provided with the
- *    distribution.
- *
- * . Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following Disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * . Neither the name of Agere Systems Inc. nor the names of the contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * Disclaimer
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  ANY
- * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN
- * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- */
-
-#include "et131x_defs.h"
-
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-
-#include <linux/sched.h>
-#include <linux/ptrace.h>
-#include <linux/slab.h>
-#include <linux/ctype.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/in.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/bitops.h>
-#include <asm/system.h>
-
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/if_arp.h>
-#include <linux/ioport.h>
-#include <linux/phy.h>
-
-#include "et1310_phy.h"
-#include "et131x_adapter.h"
-#include "et1310_rx.h"
-#include "et131x.h"
-
-static inline u32 bump_free_buff_ring(u32 *free_buff_ring, u32 limit)
-{
-	u32 tmp_free_buff_ring = *free_buff_ring;
-	tmp_free_buff_ring++;
-	/* This works for all cases where limit < 1024. The 1023 case
-	   works because 1023++ is 1024 which means the if condition is not
-	   taken but the carry of the bit into the wrap bit toggles the wrap
-	   value correctly */
-	if ((tmp_free_buff_ring & ET_DMA10_MASK) > limit) {
-		tmp_free_buff_ring &= ~ET_DMA10_MASK;
-		tmp_free_buff_ring ^= ET_DMA10_WRAP;
-	}
-	/* For the 1023 case */
-	tmp_free_buff_ring &= (ET_DMA10_MASK|ET_DMA10_WRAP);
-	*free_buff_ring = tmp_free_buff_ring;
-	return tmp_free_buff_ring;
-}
-
-/**
- * et131x_rx_dma_memory_alloc
- * @adapter: pointer to our private adapter structure
- *
- * Returns 0 on success and errno on failure (as defined in errno.h)
- *
- * Allocates Free buffer ring 1 for sure, free buffer ring 0 if required,
- * and the Packet Status Ring.
- */
-int et131x_rx_dma_memory_alloc(struct et131x_adapter *adapter)
-{
-	u32 i, j;
-	u32 bufsize;
-	u32 pktstat_ringsize, fbr_chunksize;
-	struct rx_ring *rx_ring;
-
-	/* Setup some convenience pointers */
-	rx_ring = &adapter->rx_ring;
-
-	/* Alloc memory for the lookup table */
-#ifdef USE_FBR0
-	rx_ring->fbr[0] = kmalloc(sizeof(struct fbr_lookup), GFP_KERNEL);
-#endif
-	rx_ring->fbr[1] = kmalloc(sizeof(struct fbr_lookup), GFP_KERNEL);
-
-	/* The first thing we will do is configure the sizes of the buffer
-	 * rings. These will change based on jumbo packet support.  Larger
-	 * jumbo packets increases the size of each entry in FBR0, and the
-	 * number of entries in FBR0, while at the same time decreasing the
-	 * number of entries in FBR1.
-	 *
-	 * FBR1 holds "large" frames, FBR0 holds "small" frames.  If FBR1
-	 * entries are huge in order to accommodate a "jumbo" frame, then it
-	 * will have less entries.  Conversely, FBR1 will now be relied upon
-	 * to carry more "normal" frames, thus it's entry size also increases
-	 * and the number of entries goes up too (since it now carries
-	 * "small" + "regular" packets.
-	 *
-	 * In this scheme, we try to maintain 512 entries between the two
-	 * rings. Also, FBR1 remains a constant size - when it's size doubles
-	 * the number of entries halves.  FBR0 increases in size, however.
-	 */
-
-	if (adapter->registry_jumbo_packet < 2048) {
-#ifdef USE_FBR0
-		rx_ring->fbr0_buffsize = 256;
-		rx_ring->fbr0_num_entries = 512;
-#endif
-		rx_ring->fbr1_buffsize = 2048;
-		rx_ring->fbr1_num_entries = 512;
-	} else if (adapter->registry_jumbo_packet < 4096) {
-#ifdef USE_FBR0
-		rx_ring->fbr0_buffsize = 512;
-		rx_ring->fbr0_num_entries = 1024;
-#endif
-		rx_ring->fbr1_buffsize = 4096;
-		rx_ring->fbr1_num_entries = 512;
-	} else {
-#ifdef USE_FBR0
-		rx_ring->fbr0_buffsize = 1024;
-		rx_ring->fbr0_num_entries = 768;
-#endif
-		rx_ring->fbr1_buffsize = 16384;
-		rx_ring->fbr1_num_entries = 128;
-	}
-
-#ifdef USE_FBR0
-	adapter->rx_ring.psr_num_entries = adapter->rx_ring.fbr0_num_entries +
-	    adapter->rx_ring.fbr1_num_entries;
-#else
-	adapter->rx_ring.psr_num_entries = adapter->rx_ring.fbr1_num_entries;
-#endif
-
-	/* Allocate an area of memory for Free Buffer Ring 1 */
-	bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr1_num_entries) + 0xfff;
-	rx_ring->fbr1_ring_virtaddr = pci_alloc_consistent(adapter->pdev,
-						bufsize,
-						&rx_ring->fbr1_ring_physaddr);
-	if (!rx_ring->fbr1_ring_virtaddr) {
-		dev_err(&adapter->pdev->dev,
-			  "Cannot alloc memory for Free Buffer Ring 1\n");
-		return -ENOMEM;
-	}
-
-	/* Save physical address
-	 *
-	 * NOTE: pci_alloc_consistent(), used above to alloc DMA regions,
-	 * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses
-	 * are ever returned, make sure the high part is retrieved here
-	 * before storing the adjusted address.
-	 */
-	rx_ring->fbr1_real_physaddr = rx_ring->fbr1_ring_physaddr;
-
-	/* Align Free Buffer Ring 1 on a 4K boundary */
-	et131x_align_allocated_memory(adapter,
-				      &rx_ring->fbr1_real_physaddr,
-				      &rx_ring->fbr1_offset, 0x0FFF);
-
-	rx_ring->fbr1_ring_virtaddr =
-			(void *)((u8 *) rx_ring->fbr1_ring_virtaddr +
-			rx_ring->fbr1_offset);
-
-#ifdef USE_FBR0
-	/* Allocate an area of memory for Free Buffer Ring 0 */
-	bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr0_num_entries) + 0xfff;
-	rx_ring->fbr0_ring_virtaddr = pci_alloc_consistent(adapter->pdev,
-						bufsize,
-						&rx_ring->fbr0_ring_physaddr);
-	if (!rx_ring->fbr0_ring_virtaddr) {
-		dev_err(&adapter->pdev->dev,
-			  "Cannot alloc memory for Free Buffer Ring 0\n");
-		return -ENOMEM;
-	}
-
-	/* Save physical address
-	 *
-	 * NOTE: pci_alloc_consistent(), used above to alloc DMA regions,
-	 * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses
-	 * are ever returned, make sure the high part is retrieved here before
-	 * storing the adjusted address.
-	 */
-	rx_ring->fbr0_real_physaddr = rx_ring->fbr0_ring_physaddr;
-
-	/* Align Free Buffer Ring 0 on a 4K boundary */
-	et131x_align_allocated_memory(adapter,
-				      &rx_ring->fbr0_real_physaddr,
-				      &rx_ring->fbr0_offset, 0x0FFF);
-
-	rx_ring->fbr0_ring_virtaddr =
-				(void *)((u8 *) rx_ring->fbr0_ring_virtaddr +
-				rx_ring->fbr0_offset);
-#endif
-	for (i = 0; i < (rx_ring->fbr1_num_entries / FBR_CHUNKS); i++) {
-		u64 fbr1_offset;
-		u64 fbr1_tmp_physaddr;
-		u32 fbr1_align;
-
-		/* This code allocates an area of memory big enough for N
-		 * free buffers + (buffer_size - 1) so that the buffers can
-		 * be aligned on 4k boundaries.  If each buffer were aligned
-		 * to a buffer_size boundary, the effect would be to double
-		 * the size of FBR0.  By allocating N buffers at once, we
-		 * reduce this overhead.
-		 */
-		if (rx_ring->fbr1_buffsize > 4096)
-			fbr1_align = 4096;
-		else
-			fbr1_align = rx_ring->fbr1_buffsize;
-
-		fbr_chunksize =
-		    (FBR_CHUNKS * rx_ring->fbr1_buffsize) + fbr1_align - 1;
-		rx_ring->fbr1_mem_virtaddrs[i] =
-		    pci_alloc_consistent(adapter->pdev, fbr_chunksize,
-					 &rx_ring->fbr1_mem_physaddrs[i]);
-
-		if (!rx_ring->fbr1_mem_virtaddrs[i]) {
-			dev_err(&adapter->pdev->dev,
-				"Could not alloc memory\n");
-			return -ENOMEM;
-		}
-
-		/* See NOTE in "Save Physical Address" comment above */
-		fbr1_tmp_physaddr = rx_ring->fbr1_mem_physaddrs[i];
-
-		et131x_align_allocated_memory(adapter,
-					      &fbr1_tmp_physaddr,
-					      &fbr1_offset, (fbr1_align - 1));
-
-		for (j = 0; j < FBR_CHUNKS; j++) {
-			u32 index = (i * FBR_CHUNKS) + j;
-
-			/* Save the Virtual address of this index for quick
-			 * access later
-			 */
-			rx_ring->fbr[1]->virt[index] =
-			    (u8 *) rx_ring->fbr1_mem_virtaddrs[i] +
-			    (j * rx_ring->fbr1_buffsize) + fbr1_offset;
-
-			/* now store the physical address in the descriptor
-			 * so the device can access it
-			 */
-			rx_ring->fbr[1]->bus_high[index] =
-			    (u32) (fbr1_tmp_physaddr >> 32);
-			rx_ring->fbr[1]->bus_low[index] =
-			    (u32) fbr1_tmp_physaddr;
-
-			fbr1_tmp_physaddr += rx_ring->fbr1_buffsize;
-
-			rx_ring->fbr[1]->buffer1[index] =
-			    rx_ring->fbr[1]->virt[index];
-			rx_ring->fbr[1]->buffer2[index] =
-			    rx_ring->fbr[1]->virt[index] - 4;
-		}
-	}
-
-#ifdef USE_FBR0
-	/* Same for FBR0 (if in use) */
-	for (i = 0; i < (rx_ring->fbr0_num_entries / FBR_CHUNKS); i++) {
-		u64 fbr0_offset;
-		u64 fbr0_tmp_physaddr;
-
-		fbr_chunksize =
-		    ((FBR_CHUNKS + 1) * rx_ring->fbr0_buffsize) - 1;
-		rx_ring->fbr0_mem_virtaddrs[i] =
-		    pci_alloc_consistent(adapter->pdev, fbr_chunksize,
-					 &rx_ring->fbr0_mem_physaddrs[i]);
-
-		if (!rx_ring->fbr0_mem_virtaddrs[i]) {
-			dev_err(&adapter->pdev->dev,
-				"Could not alloc memory\n");
-			return -ENOMEM;
-		}
-
-		/* See NOTE in "Save Physical Address" comment above */
-		fbr0_tmp_physaddr = rx_ring->fbr0_mem_physaddrs[i];
-
-		et131x_align_allocated_memory(adapter,
-					      &fbr0_tmp_physaddr,
-					      &fbr0_offset,
-					      rx_ring->fbr0_buffsize - 1);
-
-		for (j = 0; j < FBR_CHUNKS; j++) {
-			u32 index = (i * FBR_CHUNKS) + j;
-
-			rx_ring->fbr[0]->virt[index] =
-			    (u8 *) rx_ring->fbr0_mem_virtaddrs[i] +
-			    (j * rx_ring->fbr0_buffsize) + fbr0_offset;
-
-			rx_ring->fbr[0]->bus_high[index] =
-			    (u32) (fbr0_tmp_physaddr >> 32);
-			rx_ring->fbr[0]->bus_low[index] =
-			    (u32) fbr0_tmp_physaddr;
-
-			fbr0_tmp_physaddr += rx_ring->fbr0_buffsize;
-
-			rx_ring->fbr[0]->buffer1[index] =
-			    rx_ring->fbr[0]->virt[index];
-			rx_ring->fbr[0]->buffer2[index] =
-			    rx_ring->fbr[0]->virt[index] - 4;
-		}
-	}
-#endif
-
-	/* Allocate an area of memory for FIFO of Packet Status ring entries */
-	pktstat_ringsize =
-	    sizeof(struct pkt_stat_desc) * adapter->rx_ring.psr_num_entries;
-
-	rx_ring->ps_ring_virtaddr = pci_alloc_consistent(adapter->pdev,
-						  pktstat_ringsize,
-						  &rx_ring->ps_ring_physaddr);
-
-	if (!rx_ring->ps_ring_virtaddr) {
-		dev_err(&adapter->pdev->dev,
-			  "Cannot alloc memory for Packet Status Ring\n");
-		return -ENOMEM;
-	}
-	printk(KERN_INFO "Packet Status Ring %lx\n",
-	    (unsigned long) rx_ring->ps_ring_physaddr);
-
-	/*
-	 * NOTE : pci_alloc_consistent(), used above to alloc DMA regions,
-	 * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses
-	 * are ever returned, make sure the high part is retrieved here before
-	 * storing the adjusted address.
-	 */
-
-	/* Allocate an area of memory for writeback of status information */
-	rx_ring->rx_status_block = pci_alloc_consistent(adapter->pdev,
-					    sizeof(struct rx_status_block),
-					    &rx_ring->rx_status_bus);
-	if (!rx_ring->rx_status_block) {
-		dev_err(&adapter->pdev->dev,
-			  "Cannot alloc memory for Status Block\n");
-		return -ENOMEM;
-	}
-	rx_ring->num_rfd = NIC_DEFAULT_NUM_RFD;
-	printk(KERN_INFO "PRS %lx\n", (unsigned long)rx_ring->rx_status_bus);
-
-	/* Recv
-	 * pci_pool_create initializes a lookaside list. After successful
-	 * creation, nonpaged fixed-size blocks can be allocated from and
-	 * freed to the lookaside list.
-	 * RFDs will be allocated from this pool.
-	 */
-	rx_ring->recv_lookaside = kmem_cache_create(adapter->netdev->name,
-						   sizeof(struct rfd),
-						   0,
-						   SLAB_CACHE_DMA |
-						   SLAB_HWCACHE_ALIGN,
-						   NULL);
-
-	adapter->flags |= fMP_ADAPTER_RECV_LOOKASIDE;
-
-	/* The RFDs are going to be put on lists later on, so initialize the
-	 * lists now.
-	 */
-	INIT_LIST_HEAD(&rx_ring->recv_list);
-	return 0;
-}
-
-/**
- * et131x_rx_dma_memory_free - Free all memory allocated within this module.
- * @adapter: pointer to our private adapter structure
- */
-void et131x_rx_dma_memory_free(struct et131x_adapter *adapter)
-{
-	u32 index;
-	u32 bufsize;
-	u32 pktstat_ringsize;
-	struct rfd *rfd;
-	struct rx_ring *rx_ring;
-
-	/* Setup some convenience pointers */
-	rx_ring = &adapter->rx_ring;
-
-	/* Free RFDs and associated packet descriptors */
-	WARN_ON(rx_ring->num_ready_recv != rx_ring->num_rfd);
-
-	while (!list_empty(&rx_ring->recv_list)) {
-		rfd = (struct rfd *) list_entry(rx_ring->recv_list.next,
-				struct rfd, list_node);
-
-		list_del(&rfd->list_node);
-		rfd->skb = NULL;
-		kmem_cache_free(adapter->rx_ring.recv_lookaside, rfd);
-	}
-
-	/* Free Free Buffer Ring 1 */
-	if (rx_ring->fbr1_ring_virtaddr) {
-		/* First the packet memory */
-		for (index = 0; index <
-		     (rx_ring->fbr1_num_entries / FBR_CHUNKS); index++) {
-			if (rx_ring->fbr1_mem_virtaddrs[index]) {
-				u32 fbr1_align;
-
-				if (rx_ring->fbr1_buffsize > 4096)
-					fbr1_align = 4096;
-				else
-					fbr1_align = rx_ring->fbr1_buffsize;
-
-				bufsize =
-				    (rx_ring->fbr1_buffsize * FBR_CHUNKS) +
-				    fbr1_align - 1;
-
-				pci_free_consistent(adapter->pdev,
-					bufsize,
-					rx_ring->fbr1_mem_virtaddrs[index],
-					rx_ring->fbr1_mem_physaddrs[index]);
-
-				rx_ring->fbr1_mem_virtaddrs[index] = NULL;
-			}
-		}
-
-		/* Now the FIFO itself */
-		rx_ring->fbr1_ring_virtaddr = (void *)((u8 *)
-			rx_ring->fbr1_ring_virtaddr - rx_ring->fbr1_offset);
-
-		bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr1_num_entries)
-							    + 0xfff;
-
-		pci_free_consistent(adapter->pdev, bufsize,
-				    rx_ring->fbr1_ring_virtaddr,
-				    rx_ring->fbr1_ring_physaddr);
-
-		rx_ring->fbr1_ring_virtaddr = NULL;
-	}
-
-#ifdef USE_FBR0
-	/* Now the same for Free Buffer Ring 0 */
-	if (rx_ring->fbr0_ring_virtaddr) {
-		/* First the packet memory */
-		for (index = 0; index <
-		     (rx_ring->fbr0_num_entries / FBR_CHUNKS); index++) {
-			if (rx_ring->fbr0_mem_virtaddrs[index]) {
-				bufsize =
-				    (rx_ring->fbr0_buffsize *
-				     (FBR_CHUNKS + 1)) - 1;
-
-				pci_free_consistent(adapter->pdev,
-					bufsize,
-					rx_ring->fbr0_mem_virtaddrs[index],
-					rx_ring->fbr0_mem_physaddrs[index]);
-
-				rx_ring->fbr0_mem_virtaddrs[index] = NULL;
-			}
-		}
-
-		/* Now the FIFO itself */
-		rx_ring->fbr0_ring_virtaddr = (void *)((u8 *)
-			rx_ring->fbr0_ring_virtaddr - rx_ring->fbr0_offset);
-
-		bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr0_num_entries)
-							    + 0xfff;
-
-		pci_free_consistent(adapter->pdev,
-				    bufsize,
-				    rx_ring->fbr0_ring_virtaddr,
-				    rx_ring->fbr0_ring_physaddr);
-
-		rx_ring->fbr0_ring_virtaddr = NULL;
-	}
-#endif
-
-	/* Free Packet Status Ring */
-	if (rx_ring->ps_ring_virtaddr) {
-		pktstat_ringsize =
-		    sizeof(struct pkt_stat_desc) *
-		    adapter->rx_ring.psr_num_entries;
-
-		pci_free_consistent(adapter->pdev, pktstat_ringsize,
-				    rx_ring->ps_ring_virtaddr,
-				    rx_ring->ps_ring_physaddr);
-
-		rx_ring->ps_ring_virtaddr = NULL;
-	}
-
-	/* Free area of memory for the writeback of status information */
-	if (rx_ring->rx_status_block) {
-		pci_free_consistent(adapter->pdev,
-			sizeof(struct rx_status_block),
-			rx_ring->rx_status_block, rx_ring->rx_status_bus);
-		rx_ring->rx_status_block = NULL;
-	}
-
-	/* Free receive buffer pool */
-
-	/* Free receive packet pool */
-
-	/* Destroy the lookaside (RFD) pool */
-	if (adapter->flags & fMP_ADAPTER_RECV_LOOKASIDE) {
-		kmem_cache_destroy(rx_ring->recv_lookaside);
-		adapter->flags &= ~fMP_ADAPTER_RECV_LOOKASIDE;
-	}
-
-	/* Free the FBR Lookup Table */
-#ifdef USE_FBR0
-	kfree(rx_ring->fbr[0]);
-#endif
-
-	kfree(rx_ring->fbr[1]);
-
-	/* Reset Counters */
-	rx_ring->num_ready_recv = 0;
-}
-
-/**
- * et131x_init_recv - Initialize receive data structures.
- * @adapter: pointer to our private adapter structure
- *
- * Returns 0 on success and errno on failure (as defined in errno.h)
- */
-int et131x_init_recv(struct et131x_adapter *adapter)
-{
-	int status = -ENOMEM;
-	struct rfd *rfd = NULL;
-	u32 rfdct;
-	u32 numrfd = 0;
-	struct rx_ring *rx_ring;
-
-	/* Setup some convenience pointers */
-	rx_ring = &adapter->rx_ring;
-
-	/* Setup each RFD */
-	for (rfdct = 0; rfdct < rx_ring->num_rfd; rfdct++) {
-		rfd = kmem_cache_alloc(rx_ring->recv_lookaside,
-						     GFP_ATOMIC | GFP_DMA);
-
-		if (!rfd) {
-			dev_err(&adapter->pdev->dev,
-				  "Couldn't alloc RFD out of kmem_cache\n");
-			status = -ENOMEM;
-			continue;
-		}
-
-		rfd->skb = NULL;
-
-		/* Add this RFD to the recv_list */
-		list_add_tail(&rfd->list_node, &rx_ring->recv_list);
-
-		/* Increment both the available RFD's, and the total RFD's. */
-		rx_ring->num_ready_recv++;
-		numrfd++;
-	}
-
-	if (numrfd > NIC_MIN_NUM_RFD)
-		status = 0;
-
-	rx_ring->num_rfd = numrfd;
-
-	if (status != 0) {
-		kmem_cache_free(rx_ring->recv_lookaside, rfd);
-		dev_err(&adapter->pdev->dev,
-			  "Allocation problems in et131x_init_recv\n");
-	}
-	return status;
-}
-
-/**
- * et131x_config_rx_dma_regs - Start of Rx_DMA init sequence
- * @adapter: pointer to our adapter structure
- */
-void et131x_config_rx_dma_regs(struct et131x_adapter *adapter)
-{
-	struct rxdma_regs __iomem *rx_dma = &adapter->regs->rxdma;
-	struct rx_ring *rx_local = &adapter->rx_ring;
-	struct fbr_desc *fbr_entry;
-	u32 entry;
-	u32 psr_num_des;
-	unsigned long flags;
-
-	/* Halt RXDMA to perform the reconfigure.  */
-	et131x_rx_dma_disable(adapter);
-
-	/* Load the completion writeback physical address
-	 *
-	 * NOTE : pci_alloc_consistent(), used above to alloc DMA regions,
-	 * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses
-	 * are ever returned, make sure the high part is retrieved here
-	 * before storing the adjusted address.
-	 */
-	writel((u32) ((u64)rx_local->rx_status_bus >> 32),
-	       &rx_dma->dma_wb_base_hi);
-	writel((u32) rx_local->rx_status_bus, &rx_dma->dma_wb_base_lo);
-
-	memset(rx_local->rx_status_block, 0, sizeof(struct rx_status_block));
-
-	/* Set the address and parameters of the packet status ring into the
-	 * 1310's registers
-	 */
-	writel((u32) ((u64)rx_local->ps_ring_physaddr >> 32),
-	       &rx_dma->psr_base_hi);
-	writel((u32) rx_local->ps_ring_physaddr, &rx_dma->psr_base_lo);
-	writel(rx_local->psr_num_entries - 1, &rx_dma->psr_num_des);
-	writel(0, &rx_dma->psr_full_offset);
-
-	psr_num_des = readl(&rx_dma->psr_num_des) & 0xFFF;
-	writel((psr_num_des * LO_MARK_PERCENT_FOR_PSR) / 100,
-	       &rx_dma->psr_min_des);
-
-	spin_lock_irqsave(&adapter->rcv_lock, flags);
-
-	/* These local variables track the PSR in the adapter structure */
-	rx_local->local_psr_full = 0;
-
-	/* Now's the best time to initialize FBR1 contents */
-	fbr_entry = (struct fbr_desc *) rx_local->fbr1_ring_virtaddr;
-	for (entry = 0; entry < rx_local->fbr1_num_entries; entry++) {
-		fbr_entry->addr_hi = rx_local->fbr[1]->bus_high[entry];
-		fbr_entry->addr_lo = rx_local->fbr[1]->bus_low[entry];
-		fbr_entry->word2 = entry;
-		fbr_entry++;
-	}
-
-	/* Set the address and parameters of Free buffer ring 1 (and 0 if
-	 * required) into the 1310's registers
-	 */
-	writel((u32) (rx_local->fbr1_real_physaddr >> 32),
-	       &rx_dma->fbr1_base_hi);
-	writel((u32) rx_local->fbr1_real_physaddr, &rx_dma->fbr1_base_lo);
-	writel(rx_local->fbr1_num_entries - 1, &rx_dma->fbr1_num_des);
-	writel(ET_DMA10_WRAP, &rx_dma->fbr1_full_offset);
-
-	/* This variable tracks the free buffer ring 1 full position, so it
-	 * has to match the above.
-	 */
-	rx_local->local_fbr1_full = ET_DMA10_WRAP;
-	writel(
-	    ((rx_local->fbr1_num_entries * LO_MARK_PERCENT_FOR_RX) / 100) - 1,
-	    &rx_dma->fbr1_min_des);
-
-#ifdef USE_FBR0
-	/* Now's the best time to initialize FBR0 contents */
-	fbr_entry = (struct fbr_desc *) rx_local->fbr0_ring_virtaddr;
-	for (entry = 0; entry < rx_local->fbr0_num_entries; entry++) {
-		fbr_entry->addr_hi = rx_local->fbr[0]->bus_high[entry];
-		fbr_entry->addr_lo = rx_local->fbr[0]->bus_low[entry];
-		fbr_entry->word2 = entry;
-		fbr_entry++;
-	}
-
-	writel((u32) (rx_local->fbr0_real_physaddr >> 32),
-	       &rx_dma->fbr0_base_hi);
-	writel((u32) rx_local->fbr0_real_physaddr, &rx_dma->fbr0_base_lo);
-	writel(rx_local->fbr0_num_entries - 1, &rx_dma->fbr0_num_des);
-	writel(ET_DMA10_WRAP, &rx_dma->fbr0_full_offset);
-
-	/* This variable tracks the free buffer ring 0 full position, so it
-	 * has to match the above.
-	 */
-	rx_local->local_fbr0_full = ET_DMA10_WRAP;
-	writel(
-	    ((rx_local->fbr0_num_entries * LO_MARK_PERCENT_FOR_RX) / 100) - 1,
-	    &rx_dma->fbr0_min_des);
-#endif
-
-	/* Program the number of packets we will receive before generating an
-	 * interrupt.
-	 * For version B silicon, this value gets updated once autoneg is
-	 *complete.
-	 */
-	writel(PARM_RX_NUM_BUFS_DEF, &rx_dma->num_pkt_done);
-
-	/* The "time_done" is not working correctly to coalesce interrupts
-	 * after a given time period, but rather is giving us an interrupt
-	 * regardless of whether we have received packets.
-	 * This value gets updated once autoneg is complete.
-	 */
-	writel(PARM_RX_TIME_INT_DEF, &rx_dma->max_pkt_time);
-
-	spin_unlock_irqrestore(&adapter->rcv_lock, flags);
-}
-
-/**
- * et131x_set_rx_dma_timer - Set the heartbeat timer according to line rate.
- * @adapter: pointer to our adapter structure
- */
-void et131x_set_rx_dma_timer(struct et131x_adapter *adapter)
-{
-	struct phy_device *phydev = adapter->phydev;
-
-	if (!phydev)
-		return;
-
-	/* For version B silicon, we do not use the RxDMA timer for 10 and 100
-	 * Mbits/s line rates. We do not enable and RxDMA interrupt coalescing.
-	 */
-	if ((phydev->speed == SPEED_100) || (phydev->speed == SPEED_10)) {
-		writel(0, &adapter->regs->rxdma.max_pkt_time);
-		writel(1, &adapter->regs->rxdma.num_pkt_done);
-	}
-}
-
-/**
- * NICReturnRFD - Recycle a RFD and put it back onto the receive list
- * @adapter: pointer to our adapter
- * @rfd: pointer to the RFD
- */
-static void nic_return_rfd(struct et131x_adapter *adapter, struct rfd *rfd)
-{
-	struct rx_ring *rx_local = &adapter->rx_ring;
-	struct rxdma_regs __iomem *rx_dma = &adapter->regs->rxdma;
-	u16 buff_index = rfd->bufferindex;
-	u8 ring_index = rfd->ringindex;
-	unsigned long flags;
-
-	/* We don't use any of the OOB data besides status. Otherwise, we
-	 * need to clean up OOB data
-	 */
-	if (
-#ifdef USE_FBR0
-	    (ring_index == 0 && buff_index < rx_local->fbr0_num_entries) ||
-#endif
-	    (ring_index == 1 && buff_index < rx_local->fbr1_num_entries)) {
-		spin_lock_irqsave(&adapter->fbr_lock, flags);
-
-		if (ring_index == 1) {
-			struct fbr_desc *next =
-			    (struct fbr_desc *) (rx_local->fbr1_ring_virtaddr) +
-					 INDEX10(rx_local->local_fbr1_full);
-
-			/* Handle the Free Buffer Ring advancement here. Write
-			 * the PA / Buffer Index for the returned buffer into
-			 * the oldest (next to be freed)FBR entry
-			 */
-			next->addr_hi = rx_local->fbr[1]->bus_high[buff_index];
-			next->addr_lo = rx_local->fbr[1]->bus_low[buff_index];
-			next->word2 = buff_index;
-
-			writel(bump_free_buff_ring(&rx_local->local_fbr1_full,
-				rx_local->fbr1_num_entries - 1),
-				&rx_dma->fbr1_full_offset);
-		}
-#ifdef USE_FBR0
-		else {
-			struct fbr_desc *next = (struct fbr_desc *)
-				rx_local->fbr0_ring_virtaddr +
-					INDEX10(rx_local->local_fbr0_full);
-
-			/* Handle the Free Buffer Ring advancement here. Write
-			 * the PA / Buffer Index for the returned buffer into
-			 * the oldest (next to be freed) FBR entry
-			 */
-			next->addr_hi = rx_local->fbr[0]->bus_high[buff_index];
-			next->addr_lo = rx_local->fbr[0]->bus_low[buff_index];
-			next->word2 = buff_index;
-
-			writel(bump_free_buff_ring(&rx_local->local_fbr0_full,
-					rx_local->fbr0_num_entries - 1),
-			       &rx_dma->fbr0_full_offset);
-		}
-#endif
-		spin_unlock_irqrestore(&adapter->fbr_lock, flags);
-	} else {
-		dev_err(&adapter->pdev->dev,
-			  "%s illegal Buffer Index returned\n", __func__);
-	}
-
-	/* The processing on this RFD is done, so put it back on the tail of
-	 * our list
-	 */
-	spin_lock_irqsave(&adapter->rcv_lock, flags);
-	list_add_tail(&rfd->list_node, &rx_local->recv_list);
-	rx_local->num_ready_recv++;
-	spin_unlock_irqrestore(&adapter->rcv_lock, flags);
-
-	WARN_ON(rx_local->num_ready_recv > rx_local->num_rfd);
-}
-
-/**
- * et131x_rx_dma_disable - Stop of Rx_DMA on the ET1310
- * @adapter: pointer to our adapter structure
- */
-void et131x_rx_dma_disable(struct et131x_adapter *adapter)
-{
-	u32 csr;
-	/* Setup the receive dma configuration register */
-	writel(0x00002001, &adapter->regs->rxdma.csr);
-	csr = readl(&adapter->regs->rxdma.csr);
-	if ((csr & 0x00020000) == 0) {	/* Check halt status (bit 17) */
-		udelay(5);
-		csr = readl(&adapter->regs->rxdma.csr);
-		if ((csr & 0x00020000) == 0)
-			dev_err(&adapter->pdev->dev,
-			"RX Dma failed to enter halt state. CSR 0x%08x\n",
-				csr);
-	}
-}
-
-/**
- * et131x_rx_dma_enable - re-start of Rx_DMA on the ET1310.
- * @adapter: pointer to our adapter structure
- */
-void et131x_rx_dma_enable(struct et131x_adapter *adapter)
-{
-	/* Setup the receive dma configuration register for normal operation */
-	u32 csr =  0x2000;	/* FBR1 enable */
-
-	if (adapter->rx_ring.fbr1_buffsize == 4096)
-		csr |= 0x0800;
-	else if (adapter->rx_ring.fbr1_buffsize == 8192)
-		csr |= 0x1000;
-	else if (adapter->rx_ring.fbr1_buffsize == 16384)
-		csr |= 0x1800;
-#ifdef USE_FBR0
-	csr |= 0x0400;		/* FBR0 enable */
-	if (adapter->rx_ring.fbr0_buffsize == 256)
-		csr |= 0x0100;
-	else if (adapter->rx_ring.fbr0_buffsize == 512)
-		csr |= 0x0200;
-	else if (adapter->rx_ring.fbr0_buffsize == 1024)
-		csr |= 0x0300;
-#endif
-	writel(csr, &adapter->regs->rxdma.csr);
-
-	csr = readl(&adapter->regs->rxdma.csr);
-	if ((csr & 0x00020000) != 0) {
-		udelay(5);
-		csr = readl(&adapter->regs->rxdma.csr);
-		if ((csr & 0x00020000) != 0) {
-			dev_err(&adapter->pdev->dev,
-			    "RX Dma failed to exit halt state.  CSR 0x%08x\n",
-				csr);
-		}
-	}
-}
-
-/**
- * nic_rx_pkts - Checks the hardware for available packets
- * @adapter: pointer to our adapter
- *
- * Returns rfd, a pointer to our MPRFD.
- *
- * Checks the hardware for available packets, using completion ring
- * If packets are available, it gets an RFD from the recv_list, attaches
- * the packet to it, puts the RFD in the RecvPendList, and also returns
- * the pointer to the RFD.
- */
-static struct rfd *nic_rx_pkts(struct et131x_adapter *adapter)
-{
-	struct rx_ring *rx_local = &adapter->rx_ring;
-	struct rx_status_block *status;
-	struct pkt_stat_desc *psr;
-	struct rfd *rfd;
-	u32 i;
-	u8 *buf;
-	unsigned long flags;
-	struct list_head *element;
-	u8 ring_index;
-	u16 buff_index;
-	u32 len;
-	u32 word0;
-	u32 word1;
-
-	/* RX Status block is written by the DMA engine prior to every
-	 * interrupt. It contains the next to be used entry in the Packet
-	 * Status Ring, and also the two Free Buffer rings.
-	 */
-	status = rx_local->rx_status_block;
-	word1 = status->word1 >> 16;	/* Get the useful bits */
-
-	/* Check the PSR and wrap bits do not match */
-	if ((word1 & 0x1FFF) == (rx_local->local_psr_full & 0x1FFF))
-		/* Looks like this ring is not updated yet */
-		return NULL;
-
-	/* The packet status ring indicates that data is available. */
-	psr = (struct pkt_stat_desc *) (rx_local->ps_ring_virtaddr) +
-			(rx_local->local_psr_full & 0xFFF);
-
-	/* Grab any information that is required once the PSR is
-	 * advanced, since we can no longer rely on the memory being
-	 * accurate
-	 */
-	len = psr->word1 & 0xFFFF;
-	ring_index = (psr->word1 >> 26) & 0x03;
-	buff_index = (psr->word1 >> 16) & 0x3FF;
-	word0 = psr->word0;
-
-	/* Indicate that we have used this PSR entry. */
-	/* FIXME wrap 12 */
-	add_12bit(&rx_local->local_psr_full, 1);
-	if (
-	  (rx_local->local_psr_full & 0xFFF) > rx_local->psr_num_entries - 1) {
-		/* Clear psr full and toggle the wrap bit */
-		rx_local->local_psr_full &=  ~0xFFF;
-		rx_local->local_psr_full ^= 0x1000;
-	}
-
-	writel(rx_local->local_psr_full,
-	       &adapter->regs->rxdma.psr_full_offset);
-
-#ifndef USE_FBR0
-	if (ring_index != 1)
-		return NULL;
-#endif
-
-#ifdef USE_FBR0
-	if (ring_index > 1 ||
-		(ring_index == 0 &&
-		buff_index > rx_local->fbr0_num_entries - 1) ||
-		(ring_index == 1 &&
-		buff_index > rx_local->fbr1_num_entries - 1))
-#else
-	if (ring_index != 1 || buff_index > rx_local->fbr1_num_entries - 1)
-#endif
-	{
-		/* Illegal buffer or ring index cannot be used by S/W*/
-		dev_err(&adapter->pdev->dev,
-			  "NICRxPkts PSR Entry %d indicates "
-			  "length of %d and/or bad bi(%d)\n",
-			  rx_local->local_psr_full & 0xFFF,
-			  len, buff_index);
-		return NULL;
-	}
-
-	/* Get and fill the RFD. */
-	spin_lock_irqsave(&adapter->rcv_lock, flags);
-
-	rfd = NULL;
-	element = rx_local->recv_list.next;
-	rfd = (struct rfd *) list_entry(element, struct rfd, list_node);
-
-	if (rfd == NULL) {
-		spin_unlock_irqrestore(&adapter->rcv_lock, flags);
-		return NULL;
-	}
-
-	list_del(&rfd->list_node);
-	rx_local->num_ready_recv--;
-
-	spin_unlock_irqrestore(&adapter->rcv_lock, flags);
-
-	rfd->bufferindex = buff_index;
-	rfd->ringindex = ring_index;
-
-	/* In V1 silicon, there is a bug which screws up filtering of
-	 * runt packets.  Therefore runt packet filtering is disabled
-	 * in the MAC and the packets are dropped here.  They are
-	 * also counted here.
-	 */
-	if (len < (NIC_MIN_PACKET_SIZE + 4)) {
-		adapter->stats.rx_other_errs++;
-		len = 0;
-	}
-
-	if (len) {
-		/* Determine if this is a multicast packet coming in */
-		if ((word0 & ALCATEL_MULTICAST_PKT) &&
-		    !(word0 & ALCATEL_BROADCAST_PKT)) {
-			/* Promiscuous mode and Multicast mode are
-			 * not mutually exclusive as was first
-			 * thought.  I guess Promiscuous is just
-			 * considered a super-set of the other
-			 * filters. Generally filter is 0x2b when in
-			 * promiscuous mode.
-			 */
-			if ((adapter->packet_filter &
-					ET131X_PACKET_TYPE_MULTICAST)
-			    && !(adapter->packet_filter &
-					ET131X_PACKET_TYPE_PROMISCUOUS)
-			    && !(adapter->packet_filter &
-					ET131X_PACKET_TYPE_ALL_MULTICAST)) {
-				buf = rx_local->fbr[ring_index]->
-						virt[buff_index];
-
-				/* Loop through our list to see if the
-				 * destination address of this packet
-				 * matches one in our list.
-				 */
-				for (i = 0; i < adapter->multicast_addr_count;
-				     i++) {
-					if (buf[0] ==
-						adapter->multicast_list[i][0]
-					    && buf[1] ==
-						adapter->multicast_list[i][1]
-					    && buf[2] ==
-						adapter->multicast_list[i][2]
-					    && buf[3] ==
-						adapter->multicast_list[i][3]
-					    && buf[4] ==
-						adapter->multicast_list[i][4]
-					    && buf[5] ==
-						adapter->multicast_list[i][5]) {
-						break;
-					}
-				}
-
-				/* If our index is equal to the number
-				 * of Multicast address we have, then
-				 * this means we did not find this
-				 * packet's matching address in our
-				 * list.  Set the len to zero,
-				 * so we free our RFD when we return
-				 * from this function.
-				 */
-				if (i == adapter->multicast_addr_count)
-					len = 0;
-			}
-
-			if (len > 0)
-				adapter->stats.multicast_pkts_rcvd++;
-		} else if (word0 & ALCATEL_BROADCAST_PKT)
-			adapter->stats.broadcast_pkts_rcvd++;
-		else
-			/* Not sure what this counter measures in
-			 * promiscuous mode. Perhaps we should check
-			 * the MAC address to see if it is directed
-			 * to us in promiscuous mode.
-			 */
-			adapter->stats.unicast_pkts_rcvd++;
-	}
-
-	if (len > 0) {
-		struct sk_buff *skb = NULL;
-
-		/*rfd->len = len - 4; */
-		rfd->len = len;
-
-		skb = dev_alloc_skb(rfd->len + 2);
-		if (!skb) {
-			dev_err(&adapter->pdev->dev,
-				  "Couldn't alloc an SKB for Rx\n");
-			return NULL;
-		}
-
-		adapter->net_stats.rx_bytes += rfd->len;
-
-		memcpy(skb_put(skb, rfd->len),
-		       rx_local->fbr[ring_index]->virt[buff_index],
-		       rfd->len);
-
-		skb->dev = adapter->netdev;
-		skb->protocol = eth_type_trans(skb, adapter->netdev);
-		skb->ip_summed = CHECKSUM_NONE;
-
-		netif_rx(skb);
-	} else {
-		rfd->len = 0;
-	}
-
-	nic_return_rfd(adapter, rfd);
-	return rfd;
-}
-
-/**
- * et131x_reset_recv - Reset the receive list
- * @adapter: pointer to our adapter
- *
- * Assumption, Rcv spinlock has been acquired.
- */
-void et131x_reset_recv(struct et131x_adapter *adapter)
-{
-	WARN_ON(list_empty(&adapter->rx_ring.recv_list));
-}
-
-/**
- * et131x_handle_recv_interrupt - Interrupt handler for receive processing
- * @adapter: pointer to our adapter
- *
- * Assumption, Rcv spinlock has been acquired.
- */
-void et131x_handle_recv_interrupt(struct et131x_adapter *adapter)
-{
-	struct rfd *rfd = NULL;
-	u32 count = 0;
-	bool done = true;
-
-	/* Process up to available RFD's */
-	while (count < NUM_PACKETS_HANDLED) {
-		if (list_empty(&adapter->rx_ring.recv_list)) {
-			WARN_ON(adapter->rx_ring.num_ready_recv != 0);
-			done = false;
-			break;
-		}
-
-		rfd = nic_rx_pkts(adapter);
-
-		if (rfd == NULL)
-			break;
-
-		/* Do not receive any packets until a filter has been set.
-		 * Do not receive any packets until we have link.
-		 * If length is zero, return the RFD in order to advance the
-		 * Free buffer ring.
-		 */
-		if (!adapter->packet_filter ||
-		    !netif_carrier_ok(adapter->netdev) ||
-		    rfd->len == 0)
-			continue;
-
-		/* Increment the number of packets we received */
-		adapter->net_stats.rx_packets++;
-
-		/* Set the status on the packet, either resources or success */
-		if (adapter->rx_ring.num_ready_recv < RFD_LOW_WATER_MARK) {
-			dev_warn(&adapter->pdev->dev,
-				    "RFD's are running out\n");
-		}
-		count++;
-	}
-
-	if (count == NUM_PACKETS_HANDLED || !done) {
-		adapter->rx_ring.unfinished_receives = true;
-		writel(PARM_TX_TIME_INT_DEF * NANO_IN_A_MICRO,
-		       &adapter->regs->global.watchdog_timer);
-	} else
-		/* Watchdog timer will disable itself if appropriate. */
-		adapter->rx_ring.unfinished_receives = false;
-}
-

drivers/staging/et131x/et1310_tx.c

···
-/*
- * Agere Systems Inc.
- * 10/100/1000 Base-T Ethernet Driver for the ET1301 and ET131x series MACs
- *
- * Copyright © 2005 Agere Systems Inc.
- * All rights reserved.
- *   http://www.agere.com
- *
- * Copyright (c) 2011 Mark Einon <[e-mail]>
- *
- *------------------------------------------------------------------------------
- *
- * et1310_tx.c - Routines used to perform data transmission.
- *
- *------------------------------------------------------------------------------
- *
- * SOFTWARE LICENSE
- *
- * This software is provided subject to the following terms and conditions,
- * which you should read carefully before using the software.  Using this
- * software indicates your acceptance of these terms and conditions.  If you do
- * not agree with these terms and conditions, do not use the software.
- *
- * Copyright © 2005 Agere Systems Inc.
- * All rights reserved.
- *
- * Redistribution and use in source or binary forms, with or without
- * modifications, are permitted provided that the following conditions are met:
- *
- * . Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following Disclaimer as comments in the code as
- *    well as in the documentation and/or other materials provided with the
- *    distribution.
- *
- * . Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following Disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * . Neither the name of Agere Systems Inc. nor the names of the contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * Disclaimer
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  ANY
- * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN
- * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- */
-
-#include "et131x_defs.h"
-
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-
-#include <linux/sched.h>
-#include <linux/ptrace.h>
-#include <linux/slab.h>
-#include <linux/ctype.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/in.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/bitops.h>
-#include <asm/system.h>
-
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/if_arp.h>
-#include <linux/ioport.h>
-#include <linux/phy.h>
-
-#include "et1310_phy.h"
-#include "et131x_adapter.h"
-#include "et1310_tx.h"
-#include "et131x.h"
-
-/**
- * et131x_tx_dma_memory_alloc
- * @adapter: pointer to our private adapter structure
- *
- * Returns 0 on success and errno on failure (as defined in errno.h).
- *
- * Allocates memory that will be visible both to the device and to the CPU.
- * The OS will pass us packets, pointers to which we will insert in the Tx
- * Descriptor queue. The device will read this queue to find the packets in
- * memory. The device will update the "status" in memory each time it xmits a
- * packet.
- */
-int et131x_tx_dma_memory_alloc(struct et131x_adapter *adapter)
-{
-	int desc_size = 0;
-	struct tx_ring *tx_ring = &adapter->tx_ring;
-
-	/* Allocate memory for the TCB's (Transmit Control Block) */
-	adapter->tx_ring.tcb_ring =
-		kcalloc(NUM_TCB, sizeof(struct tcb), GFP_ATOMIC | GFP_DMA);
-	if (!adapter->tx_ring.tcb_ring) {
-		dev_err(&adapter->pdev->dev, "Cannot alloc memory for TCBs\n");
-		return -ENOMEM;
-	}
-
-	/* Allocate enough memory for the Tx descriptor ring, and allocate
-	 * some extra so that the ring can be aligned on a 4k boundary.
-	 */
-	desc_size = (sizeof(struct tx_desc) * NUM_DESC_PER_RING_TX) + 4096 - 1;
-	tx_ring->tx_desc_ring =
-	    (struct tx_desc *) pci_alloc_consistent(adapter->pdev, desc_size,
-						    &tx_ring->tx_desc_ring_pa);
-	if (!adapter->tx_ring.tx_desc_ring) {
-		dev_err(&adapter->pdev->dev,
-					"Cannot alloc memory for Tx Ring\n");
-		return -ENOMEM;
-	}
-
-	/* Save physical address
-	 *
-	 * NOTE: pci_alloc_consistent(), used above to alloc DMA regions,
-	 * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses
-	 * are ever returned, make sure the high part is retrieved here before
-	 * storing the adjusted address.
-	 */
-	/* Allocate memory for the Tx status block */
-	tx_ring->tx_status = pci_alloc_consistent(adapter->pdev,
-						    sizeof(u32),
-						    &tx_ring->tx_status_pa);
-	if (!adapter->tx_ring.tx_status_pa) {
-		dev_err(&adapter->pdev->dev,
-				  "Cannot alloc memory for Tx status block\n");
-		return -ENOMEM;
-	}
-	return 0;
-}
-
-/**
- * et131x_tx_dma_memory_free - Free all memory allocated within this module
- * @adapter: pointer to our private adapter structure
- *
- * Returns 0 on success and errno on failure (as defined in errno.h).
- */
-void et131x_tx_dma_memory_free(struct et131x_adapter *adapter)
-{
-	int desc_size = 0;
-
-	if (adapter->tx_ring.tx_desc_ring) {
-		/* Free memory relating to Tx rings here */
-		desc_size = (sizeof(struct tx_desc) * NUM_DESC_PER_RING_TX)
-								+ 4096 - 1;
-		pci_free_consistent(adapter->pdev,
-				    desc_size,
-				    adapter->tx_ring.tx_desc_ring,
-				    adapter->tx_ring.tx_desc_ring_pa);
-		adapter->tx_ring.tx_desc_ring = NULL;
-	}
-
-	/* Free memory for the Tx status block */
-	if (adapter->tx_ring.tx_status) {
-		pci_free_consistent(adapter->pdev,
-				    sizeof(u32),
-				    adapter->tx_ring.tx_status,
-				    adapter->tx_ring.tx_status_pa);
-
-		adapter->tx_ring.tx_status = NULL;
-	}
-	/* Free the memory for the tcb structures */
-	kfree(adapter->tx_ring.tcb_ring);
-}
-
-/**
- * et131x_config_tx_dma_regs - Set up the tx dma section of the JAGCore.
- * @adapter: pointer to our private adapter structure
- *
- * Configure the transmit engine with the ring buffers we have created
- * and prepare it for use.
- */
-void et131x_config_tx_dma_regs(struct et131x_adapter *adapter)
-{
-	struct txdma_regs __iomem *txdma = &adapter->regs->txdma;
-
-	/* Load the hardware with the start of the transmit descriptor ring. */
-	writel((u32) ((u64)adapter->tx_ring.tx_desc_ring_pa >> 32),
-	       &txdma->pr_base_hi);
-	writel((u32) adapter->tx_ring.tx_desc_ring_pa,
-	       &txdma->pr_base_lo);
-
-	/* Initialise the transmit DMA engine */
-	writel(NUM_DESC_PER_RING_TX - 1, &txdma->pr_num_des);
-
-	/* Load the completion writeback physical address */
-	writel((u32)((u64)adapter->tx_ring.tx_status_pa >> 32),
-						&txdma->dma_wb_base_hi);
-	writel((u32)adapter->tx_ring.tx_status_pa, &txdma->dma_wb_base_lo);
-
-	*adapter->tx_ring.tx_status = 0;
-
-	writel(0, &txdma->service_request);
-	adapter->tx_ring.send_idx = 0;
-}
-
-/**
- * et131x_tx_dma_disable - Stop of Tx_DMA on the ET1310
- * @adapter: pointer to our adapter structure
- */
-void et131x_tx_dma_disable(struct et131x_adapter *adapter)
-{
-	/* Setup the tramsmit dma configuration register */
-	writel(ET_TXDMA_CSR_HALT|ET_TXDMA_SNGL_EPKT,
-					&adapter->regs->txdma.csr);
-}
-
-/**
- * et131x_tx_dma_enable - re-start of Tx_DMA on the ET1310.
- * @adapter: pointer to our adapter structure
- *
- * Mainly used after a return to the D0 (full-power) state from a lower state.
- */
-void et131x_tx_dma_enable(struct et131x_adapter *adapter)
-{
-	/* Setup the transmit dma configuration register for normal
-	 * operation
-	 */
-	writel(ET_TXDMA_SNGL_EPKT|(PARM_DMA_CACHE_DEF << ET_TXDMA_CACHE_SHIFT),
-					&adapter->regs->txdma.csr);
-}
-
-/**
- * et131x_init_send - Initialize send data structures
- * @adapter: pointer to our private adapter structure
- */
-void et131x_init_send(struct et131x_adapter *adapter)
-{
-	struct tcb *tcb;
-	u32 ct;
-	struct tx_ring *tx_ring;
-
-	/* Setup some convenience pointers */
-	tx_ring = &adapter->tx_ring;
-	tcb = adapter->tx_ring.tcb_ring;
-
-	tx_ring->tcb_qhead = tcb;
-
-	memset(tcb, 0, sizeof(struct tcb) * NUM_TCB);
-
-	/* Go through and set up each TCB */
-	for (ct = 0; ct++ < NUM_TCB; tcb++)
-		/* Set the link pointer in HW TCB to the next TCB in the
-		 * chain
-		 */
-		tcb->next = tcb + 1;
-
-	/* Set the  tail pointer */
-	tcb--;
-	tx_ring->tcb_qtail = tcb;
-	tcb->next = NULL;
-	/* Curr send queue should now be empty */
-	tx_ring->send_head = NULL;
-	tx_ring->send_tail = NULL;
-}
-
-/**
- * nic_send_packet - NIC specific send handler for version B silicon.
- * @adapter: pointer to our adapter
- * @tcb: pointer to struct tcb
- *
- * Returns 0 or errno.
- */
-static int nic_send_packet(struct et131x_adapter *adapter, struct tcb *tcb)
-{
-	u32 i;
-	struct tx_desc desc[24];	/* 24 x 16 byte */
-	u32 frag = 0;
-	u32 thiscopy, remainder;
-	struct sk_buff *skb = tcb->skb;
-	u32 nr_frags = skb_shinfo(skb)->nr_frags + 1;
-	struct skb_frag_struct *frags = &skb_shinfo(skb)->frags[0];
-	unsigned long flags;
-	struct phy_device *phydev = adapter->phydev;
-
-	/* Part of the optimizations of this send routine restrict us to
-	 * sending 24 fragments at a pass.  In practice we should never see
-	 * more than 5 fragments.
-	 *
-	 * NOTE: The older version of this function (below) can handle any
-	 * number of fragments. If needed, we can call this function,
-	 * although it is less efficient.
-	 */
-	if (nr_frags > 23)
-		return -EIO;
-
-	memset(desc, 0, sizeof(struct tx_desc) * (nr_frags + 1));
-
-	for (i = 0; i < nr_frags; i++) {
-		/* If there is something in this element, lets get a
-		 * descriptor from the ring and get the necessary data
-		 */
-		if (i == 0) {
-			/* If the fragments are smaller than a standard MTU,
-			 * then map them to a single descriptor in the Tx
-			 * Desc ring. However, if they're larger, as is
-			 * possible with support for jumbo packets, then
-			 * split them each across 2 descriptors.
-			 *
-			 * This will work until we determine why the hardware
-			 * doesn't seem to like large fragments.
-			 */
-			if ((skb->len - skb->data_len) <= 1514) {
-				desc[frag].addr_hi = 0;
-				/* Low 16bits are length, high is vlan and
-				   unused currently so zero */
-				desc[frag].len_vlan =
-					skb->len - skb->data_len;
-
-				/* NOTE: Here, the dma_addr_t returned from
-				 * pci_map_single() is implicitly cast as a
-				 * u32. Although dma_addr_t can be
-				 * 64-bit, the address returned by
-				 * pci_map_single() is always 32-bit
-				 * addressable (as defined by the pci/dma
-				 * subsystem)
-				 */
-				desc[frag++].addr_lo =
-				    pci_map_single(adapter->pdev,
-						   skb->data,
-						   skb->len -
-						   skb->data_len,
-						   PCI_DMA_TODEVICE);
-			} else {
-				desc[frag].addr_hi = 0;
-				desc[frag].len_vlan =
-				    (skb->len - skb->data_len) / 2;
-
-				/* NOTE: Here, the dma_addr_t returned from
-				 * pci_map_single() is implicitly cast as a
-				 * u32. Although dma_addr_t can be
-				 * 64-bit, the address returned by
-				 * pci_map_single() is always 32-bit
-				 * addressable (as defined by the pci/dma
-				 * subsystem)
-				 */
-				desc[frag++].addr_lo =
-				    pci_map_single(adapter->pdev,
-						   skb->data,
-						   ((skb->len -
-						     skb->data_len) / 2),
-						   PCI_DMA_TODEVICE);
-				desc[frag].addr_hi = 0;
-
-				desc[frag].len_vlan =
-				    (skb->len - skb->data_len) / 2;
-
-				/* NOTE: Here, the dma_addr_t returned from
-				 * pci_map_single() is implicitly cast as a
-				 * u32. Although dma_addr_t can be
-				 * 64-bit, the address returned by
-				 * pci_map_single() is always 32-bit
-				 * addressable (as defined by the pci/dma
-				 * subsystem)
-				 */
-				desc[frag++].addr_lo =
-				    pci_map_single(adapter->pdev,
-						   skb->data +
-						   ((skb->len -
-						     skb->data_len) / 2),
-						   ((skb->len -
-						     skb->data_len) / 2),
-						   PCI_DMA_TODEVICE);
-			}
-		} else {
-			desc[frag].addr_hi = 0;
-			desc[frag].len_vlan =
-					frags[i - 1].size;
-
-			/* NOTE: Here, the dma_addr_t returned from
-			 * pci_map_page() is implicitly cast as a u32.
-			 * Although dma_addr_t can be 64-bit, the address
-			 * returned by pci_map_page() is always 32-bit
-			 * addressable (as defined by the pci/dma subsystem)
-			 */
-			desc[frag++].addr_lo =
-			    pci_map_page(adapter->pdev,
-					 frags[i - 1].page,
-					 frags[i - 1].page_offset,
-					 frags[i - 1].size,
-					 PCI_DMA_TODEVICE);
-		}
-	}
-
-	if (frag == 0)
-		return -EIO;
-
-	if (phydev && phydev->speed == SPEED_1000) {
-		if (++adapter->tx_ring.since_irq == PARM_TX_NUM_BUFS_DEF) {
-			/* Last element & Interrupt flag */
-			desc[frag - 1].flags = 0x5;
-			adapter->tx_ring.since_irq = 0;
-		} else { /* Last element */
-			desc[frag - 1].flags = 0x1;
-		}
-	} else
-		desc[frag - 1].flags = 0x5;
-
-	desc[0].flags |= 2;	/* First element flag */
-
-	tcb->index_start = adapter->tx_ring.send_idx;
-	tcb->stale = 0;
-
-	spin_lock_irqsave(&adapter->send_hw_lock, flags);
-
-	thiscopy = NUM_DESC_PER_RING_TX -
-				INDEX10(adapter->tx_ring.send_idx);
-
-	if (thiscopy >= frag) {
-		remainder = 0;
-		thiscopy = frag;
-	} else {
-		remainder = frag - thiscopy;
-	}
-
-	memcpy(adapter->tx_ring.tx_desc_ring +
-	       INDEX10(adapter->tx_ring.send_idx), desc,
-	       sizeof(struct tx_desc) * thiscopy);
-
-	add_10bit(&adapter->tx_ring.send_idx, thiscopy);
-
-	if (INDEX10(adapter->tx_ring.send_idx) == 0 ||
-		  INDEX10(adapter->tx_ring.send_idx) == NUM_DESC_PER_RING_TX) {
-		adapter->tx_ring.send_idx &= ~ET_DMA10_MASK;
-		adapter->tx_ring.send_idx ^= ET_DMA10_WRAP;
-	}
-
-	if (remainder) {
-		memcpy(adapter->tx_ring.tx_desc_ring,
-		       desc + thiscopy,
-		       sizeof(struct tx_desc) * remainder);
-
-		add_10bit(&adapter->tx_ring.send_idx, remainder);
-	}
-
-	if (INDEX10(adapter->tx_ring.send_idx) == 0) {
-		if (adapter->tx_ring.send_idx)
-			tcb->index = NUM_DESC_PER_RING_TX - 1;
-		else
-			tcb->index = ET_DMA10_WRAP|(NUM_DESC_PER_RING_TX - 1);
-	} else
-		tcb->index = adapter->tx_ring.send_idx - 1;
-
-	spin_lock(&adapter->tcb_send_qlock);
-
-	if (adapter->tx_ring.send_tail)
-		adapter->tx_ring.send_tail->next = tcb;
-	else
-		adapter->tx_ring.send_head = tcb;
-
-	adapter->tx_ring.send_tail = tcb;
-
-	WARN_ON(tcb->next != NULL);
-
-	adapter->tx_ring.used++;
-
-	spin_unlock(&adapter->tcb_send_qlock);
-
-	/* Write the new write pointer back to the device. */
-	writel(adapter->tx_ring.send_idx,
-	       &adapter->regs->txdma.service_request);
-
-	/* For Gig only, we use Tx Interrupt coalescing.  Enable the software
-	 * timer to wake us up if this packet isn't followed by N more.
-	 */
-	if (phydev && phydev->speed == SPEED_1000) {
-		writel(PARM_TX_TIME_INT_DEF * NANO_IN_A_MICRO,
-		       &adapter->regs->global.watchdog_timer);
-	}
-	spin_unlock_irqrestore(&adapter->send_hw_lock, flags);
-
-	return 0;
-}
-
-/**
- * send_packet - Do the work to send a packet
- * @skb: the packet(s) to send
- * @adapter: a pointer to the device's private adapter structure
- *
- * Return 0 in almost all cases; non-zero value in extreme hard failure only.
- *
- * Assumption: Send spinlock has been acquired
- */
-static int send_packet(struct sk_buff *skb, struct et131x_adapter *adapter)
-{
-	int status;
-	struct tcb *tcb = NULL;
-	u16 *shbufva;
-	unsigned long flags;
-
-	/* All packets must have at least a MAC address and a protocol type */
-	if (skb->len < ETH_HLEN)
-		return -EIO;
-
-	/* Get a TCB for this packet */
-	spin_lock_irqsave(&adapter->tcb_ready_qlock, flags);
-
-	tcb = adapter->tx_ring.tcb_qhead;
-
-	if (tcb == NULL) {
-		spin_unlock_irqrestore(&adapter->tcb_ready_qlock, flags);
-		return -ENOMEM;
-	}
-
-	adapter->tx_ring.tcb_qhead = tcb->next;
-
-	if (adapter->tx_ring.tcb_qhead == NULL)
-		adapter->tx_ring.tcb_qtail = NULL;
-
-	spin_unlock_irqrestore(&adapter->tcb_ready_qlock, flags);
-
-	tcb->skb = skb;
-
-	if (skb->data != NULL && skb->len - skb->data_len >= 6) {
-		shbufva = (u16 *) skb->data;
-
-		if ((shbufva[0] == 0xffff) &&
-		    (shbufva[1] == 0xffff) && (shbufva[2] == 0xffff)) {
-			tcb->flags |= fMP_DEST_BROAD;
-		} else if ((shbufva[0] & 0x3) == 0x0001) {
-			tcb->flags |=  fMP_DEST_MULTI;
-		}
-	}
-
-	tcb->next = NULL;
-
-	/* Call the NIC specific send handler. */
-	status = nic_send_packet(adapter, tcb);
-
-	if (status != 0) {
-		spin_lock_irqsave(&adapter->tcb_ready_qlock, flags);
-
-		if (adapter->tx_ring.tcb_qtail)
-			adapter->tx_ring.tcb_qtail->next = tcb;
-		else
-			/* Apparently ready Q is empty. */
-			adapter->tx_ring.tcb_qhead = tcb;
-
-		adapter->tx_ring.tcb_qtail = tcb;
-		spin_unlock_irqrestore(&adapter->tcb_ready_qlock, flags);
-		return status;
-	}
-	WARN_ON(adapter->tx_ring.used > NUM_TCB);
-	return 0;
-}
-
-/**
- * et131x_send_packets - This function is called by the OS to send packets
- * @skb: the packet(s) to send
- * @netdev:device on which to TX the above packet(s)
- *
- * Return 0 in almost all cases; non-zero value in extreme hard failure only
- */
-int et131x_send_packets(struct sk_buff *skb, struct net_device *netdev)
-{
-	int status = 0;
-	struct et131x_adapter *adapter = NULL;
-
-	adapter = netdev_priv(netdev);
-
-	/* Send these packets
-	 *
-	 * NOTE: The Linux Tx entry point is only given one packet at a time
-	 * to Tx, so the PacketCount and it's array used makes no sense here
-	 */
-
-	/* TCB is not available */
-	if (adapter->tx_ring.used >= NUM_TCB) {
-		/* NOTE: If there's an error on send, no need to queue the
-		 * packet under Linux; if we just send an error up to the
-		 * netif layer, it will resend the skb to us.
-		 */
-		status = -ENOMEM;
-	} else {
-		/* We need to see if the link is up; if it's not, make the
-		 * netif layer think we're good and drop the packet
-		 */
-		if ((adapter->flags & fMP_ADAPTER_FAIL_SEND_MASK) ||
-					!netif_carrier_ok(netdev)) {
-			dev_kfree_skb_any(skb);
-			skb = NULL;
-
-			adapter->net_stats.tx_dropped++;
-		} else {
-			status = send_packet(skb, adapter);
-			if (status != 0 && status != -ENOMEM) {
-				/* On any other error, make netif think we're
-				 * OK and drop the packet
-				 */
-				dev_kfree_skb_any(skb);
-				skb = NULL;
-				adapter->net_stats.tx_dropped++;
-			}
-		}
-	}
-	return status;
-}
-
-/**
- * free_send_packet - Recycle a struct tcb
- * @adapter: pointer to our adapter
- * @tcb: pointer to struct tcb
- *
- * Complete the packet if necessary
- * Assumption - Send spinlock has been acquired
- */
-static inline void free_send_packet(struct et131x_adapter *adapter,
-						struct tcb *tcb)
-{
-	unsigned long flags;
-	struct tx_desc *desc = NULL;
-	struct net_device_stats *stats = &adapter->net_stats;
-
-	if (tcb->flags & fMP_DEST_BROAD)
-		atomic_inc(&adapter->stats.broadcast_pkts_xmtd);
-	else if (tcb->flags & fMP_DEST_MULTI)
-		atomic_inc(&adapter->stats.multicast_pkts_xmtd);
-	else
-		atomic_inc(&adapter->stats.unicast_pkts_xmtd);
-
-	if (tcb->skb) {
-		stats->tx_bytes += tcb->skb->len;
-
-		/* Iterate through the TX descriptors on the ring
-		 * corresponding to this packet and umap the fragments
-		 * they point to
-		 */
-		do {
-			desc = (struct tx_desc *)
-				    (adapter->tx_ring.tx_desc_ring +
-						INDEX10(tcb->index_start));
-
-			pci_unmap_single(adapter->pdev,
-					 desc->addr_lo,
-					 desc->len_vlan, PCI_DMA_TODEVICE);
-
-			add_10bit(&tcb->index_start, 1);
-			if (INDEX10(tcb->index_start) >=
-							NUM_DESC_PER_RING_TX) {
-				tcb->index_start &= ~ET_DMA10_MASK;
-				tcb->index_start ^= ET_DMA10_WRAP;
-			}
-		} while (desc != (adapter->tx_ring.tx_desc_ring +
-				INDEX10(tcb->index)));
-
-		dev_kfree_skb_any(tcb->skb);
-	}
-
-	memset(tcb, 0, sizeof(struct tcb));
-
-	/* Add the TCB to the Ready Q */
-	spin_lock_irqsave(&adapter->tcb_ready_qlock, flags);
-
-	adapter->net_stats.tx_packets++;
-
-	if (adapter->tx_ring.tcb_qtail)
-		adapter->tx_ring.tcb_qtail->next = tcb;
-	else
-		/* Apparently ready Q is empty. */
-		adapter->tx_ring.tcb_qhead = tcb;
-
-	adapter->tx_ring.tcb_qtail = tcb;
-
-	spin_unlock_irqrestore(&adapter->tcb_ready_qlock, flags);
-	WARN_ON(adapter->tx_ring.used < 0);
-}
-
-/**
- * et131x_free_busy_send_packets - Free and complete the stopped active sends
- * @adapter: pointer to our adapter
- *
- * Assumption - Send spinlock has been acquired
- */
-void et131x_free_busy_send_packets(struct et131x_adapter *adapter)
-{
-	struct tcb *tcb;
-	unsigned long flags;
-	u32 freed = 0;
-
-	/* Any packets being sent? Check the first TCB on the send list */
-	spin_lock_irqsave(&adapter->tcb_send_qlock, flags);
-
-	tcb = adapter->tx_ring.send_head;
-
-	while (tcb != NULL && freed < NUM_TCB) {
-		struct tcb *next = tcb->next;
-
-		adapter->tx_ring.send_head = next;
-
-		if (next == NULL)
-			adapter->tx_ring.send_tail = NULL;
-
-		adapter->tx_ring.used--;
-
-		spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags);
-
-		freed++;
-		free_send_packet(adapter, tcb);
-
-		spin_lock_irqsave(&adapter->tcb_send_qlock, flags);
-
-		tcb = adapter->tx_ring.send_head;
-	}
-
-	WARN_ON(freed == NUM_TCB);
-
-	spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags);
-
-	adapter->tx_ring.used = 0;
-}
-
-/**
- * et131x_handle_send_interrupt - Interrupt handler for sending processing
- * @adapter: pointer to our adapter
- *
- * Re-claim the send resources, complete sends and get more to send from
- * the send wait queue.
- *
- * Assumption - Send spinlock has been acquired
- */
-void et131x_handle_send_interrupt(struct et131x_adapter *adapter)
-{
-	unsigned long flags;
-	u32 serviced;
-	struct tcb *tcb;
-	u32 index;
-
-	serviced = readl(&adapter->regs->txdma.new_service_complete);
-	index = INDEX10(serviced);
-
-	/* Has the ring wrapped?  Process any descriptors that do not have
-	 * the same "wrap" indicator as the current completion indicator
-	 */
-	spin_lock_irqsave(&adapter->tcb_send_qlock, flags);
-
-	tcb = adapter->tx_ring.send_head;
-
-	while (tcb &&
-	       ((serviced ^ tcb->index) & ET_DMA10_WRAP) &&
-	       index < INDEX10(tcb->index)) {
-		adapter->tx_ring.used--;
-		adapter->tx_ring.send_head = tcb->next;
-		if (tcb->next == NULL)
-			adapter->tx_ring.send_tail = NULL;
-
-		spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags);
-		free_send_packet(adapter, tcb);
-		spin_lock_irqsave(&adapter->tcb_send_qlock, flags);
-
-		/* Goto the next packet */
-		tcb = adapter->tx_ring.send_head;
-	}
-	while (tcb &&
-	       !((serviced ^ tcb->index) & ET_DMA10_WRAP)
-	       && index > (tcb->index & ET_DMA10_MASK)) {
-		adapter->tx_ring.used--;
-		adapter->tx_ring.send_head = tcb->next;
-		if (tcb->next == NULL)
-			adapter->tx_ring.send_tail = NULL;
-
-		spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags);
-		free_send_packet(adapter, tcb);
-		spin_lock_irqsave(&adapter->tcb_send_qlock, flags);
-
-		/* Goto the next packet */
-		tcb = adapter->tx_ring.send_head;
-	}
-
-	/* Wake up the queue when we hit a low-water mark */
-	if (adapter->tx_ring.used <= NUM_TCB / 3)
-		netif_wake_queue(adapter->netdev);
-
-	spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags);
-}
-

drivers/staging/et131x/et131x.c

···
+/*
+ * Agere Systems Inc.
+ * 10/100/1000 Base-T Ethernet Driver for the ET1301 and ET131x series MACs
+ *
+ * Copyright © 2005 Agere Systems Inc.
+ * All rights reserved.
+ *   http://www.agere.com
+ *
+ * Copyright (c) 2011 Mark Einon <[e-mail]>
+ *
+ *------------------------------------------------------------------------------
+ *
+ * SOFTWARE LICENSE
+ *
+ * This software is provided subject to the following terms and conditions,
+ * which you should read carefully before using the software.  Using this
+ * software indicates your acceptance of these terms and conditions.  If you do
+ * not agree with these terms and conditions, do not use the software.
+ *
+ * Copyright © 2005 Agere Systems Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source or binary forms, with or without
+ * modifications, are permitted provided that the following conditions are met:
+ *
+ * . Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following Disclaimer as comments in the code as
+ *    well as in the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * . Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following Disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * . Neither the name of Agere Systems Inc. nor the names of the contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * Disclaimer
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  ANY
+ * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN
+ * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ */
+
+#include "et131x_defs.h"
+
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+
+#include <linux/sched.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/ctype.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/in.h>
+#include <linux/delay.h>
+#include <linux/bitops.h>
+#include <linux/io.h>
+#include <asm/system.h>
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/if_arp.h>
+#include <linux/ioport.h>
+#include <linux/crc32.h>
+#include <linux/random.h>
+#include <linux/phy.h>
+
+#include "et1310_phy.h"
+#include "et131x_adapter.h"
+#include "et1310_address_map.h"
+#include "et1310_tx.h"
+#include "et1310_rx.h"
+#include "et131x.h"
+
+MODULE_AUTHOR("Victor Soriano <[e-mail]>");
+MODULE_AUTHOR("Mark Einon <[e-mail]>");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_DESCRIPTION("10/100/1000 Base-T Ethernet Driver "
+		   "for the ET1310 by Agere Systems");
+
+/* EEPROM functions */
+
+static int eeprom_wait_ready(struct pci_dev *pdev, u32 *status)
+{
+	u32 reg;
+	int i;
+
+	/*
+	 * 1. Check LBCIF Status Register for bits 6 & 3:2 all equal to 0 and
+	 *    bits 7,1:0 both equal to 1, at least once after reset.
+	 *    Subsequent operations need only to check that bits 1:0 are equal
+	 *    to 1 prior to starting a single byte read/write
+	 */
+
+	for (i = 0; i < MAX_NUM_REGISTER_POLLS; i++) {
+		/* Read registers grouped in DWORD1 */
+		if (pci_read_config_dword(pdev, LBCIF_DWORD1_GROUP, &reg))
+			return -EIO;
+
+		/* I2C idle and Phy Queue Avail both true */
+		if ((reg & 0x3000) == 0x3000) {
+			if (status)
+				*status = reg;
+			return reg & 0xFF;
+		}
+	}
+	return -ETIMEDOUT;
+}
+
+
+/**
+ * eeprom_write - Write a byte to the ET1310's EEPROM
+ * @adapter: pointer to our private adapter structure
+ * @addr: the address to write
+ * @data: the value to write
+ *
+ * Returns 1 for a successful write.
+ */
+static int eeprom_write(struct et131x_adapter *adapter, u32 addr, u8 data)
+{
+	struct pci_dev *pdev = adapter->pdev;
+	int index = 0;
+	int retries;
+	int err = 0;
+	int i2c_wack = 0;
+	int writeok = 0;
+	u32 status;
+	u32 val = 0;
+
+	/*
+	 * For an EEPROM, an I2C single byte write is defined as a START
+	 * condition followed by the device address, EEPROM address, one byte
+	 * of data and a STOP condition.  The STOP condition will trigger the
+	 * EEPROM's internally timed write cycle to the nonvolatile memory.
+	 * All inputs are disabled during this write cycle and the EEPROM will
+	 * not respond to any access until the internal write is complete.
+	 */
+
+	err = eeprom_wait_ready(pdev, NULL);
+	if (err)
+		return err;
+
+	 /*
+	 * 2. Write to the LBCIF Control Register:  bit 7=1, bit 6=1, bit 3=0,
+	 *    and bits 1:0 both =0.  Bit 5 should be set according to the
+	 *    type of EEPROM being accessed (1=two byte addressing, 0=one
+	 *    byte addressing).
+	 */
+	if (pci_write_config_byte(pdev, LBCIF_CONTROL_REGISTER,
+			LBCIF_CONTROL_LBCIF_ENABLE | LBCIF_CONTROL_I2C_WRITE))
+		return -EIO;
+
+	i2c_wack = 1;
+
+	/* Prepare EEPROM address for Step 3 */
+
+	for (retries = 0; retries < MAX_NUM_WRITE_RETRIES; retries++) {
+		/* Write the address to the LBCIF Address Register */
+		if (pci_write_config_dword(pdev, LBCIF_ADDRESS_REGISTER, addr))
+			break;
+		/*
+		 * Write the data to the LBCIF Data Register (the I2C write
+		 * will begin).
+		 */
+		if (pci_write_config_byte(pdev, LBCIF_DATA_REGISTER, data))
+			break;
+		/*
+		 * Monitor bit 1:0 of the LBCIF Status Register.  When bits
+		 * 1:0 are both equal to 1, the I2C write has completed and the
+		 * internal write cycle of the EEPROM is about to start.
+		 * (bits 1:0 = 01 is a legal state while waiting from both
+		 * equal to 1, but bits 1:0 = 10 is invalid and implies that
+		 * something is broken).
+		 */
+		err = eeprom_wait_ready(pdev, &status);
+		if (err < 0)
+			return 0;
+
+		/*
+		 * Check bit 3 of the LBCIF Status Register.  If  equal to 1,
+		 * an error has occurred.Don't break here if we are revision
+		 * 1, this is so we do a blind write for load bug.
+		 */
+		if ((status & LBCIF_STATUS_GENERAL_ERROR)
+			&& adapter->pdev->revision == 0)
+			break;
+
+		/*
+		 * Check bit 2 of the LBCIF Status Register.  If equal to 1 an
+		 * ACK error has occurred on the address phase of the write.
+		 * This could be due to an actual hardware failure or the
+		 * EEPROM may still be in its internal write cycle from a
+		 * previous write. This write operation was ignored and must be
+		  *repeated later.
+		 */
+		if (status & LBCIF_STATUS_ACK_ERROR) {
+			/*
+			 * This could be due to an actual hardware failure
+			 * or the EEPROM may still be in its internal write
+			 * cycle from a previous write. This write operation
+			 * was ignored and must be repeated later.
+			 */
+			udelay(10);
+			continue;
+		}
+
+		writeok = 1;
+		break;
+	}
+
+	/*
+	 * Set bit 6 of the LBCIF Control Register = 0.
+	 */
+	udelay(10);
+
+	while (i2c_wack) {
+		if (pci_write_config_byte(pdev, LBCIF_CONTROL_REGISTER,
+			LBCIF_CONTROL_LBCIF_ENABLE))
+			writeok = 0;
+
+		/* Do read until internal ACK_ERROR goes away meaning write
+		 * completed
+		 */
+		do {
+			pci_write_config_dword(pdev,
+					       LBCIF_ADDRESS_REGISTER,
+					       addr);
+			do {
+				pci_read_config_dword(pdev,
+					LBCIF_DATA_REGISTER, &val);
+			} while ((val & 0x00010000) == 0);
+		} while (val & 0x00040000);
+
+		if ((val & 0xFF00) != 0xC000 || index == 10000)
+			break;
+		index++;
+	}
+	return writeok ? 0 : -EIO;
+}
+
+/**
+ * eeprom_read - Read a byte from the ET1310's EEPROM
+ * @adapter: pointer to our private adapter structure
+ * @addr: the address from which to read
+ * @pdata: a pointer to a byte in which to store the value of the read
+ * @eeprom_id: the ID of the EEPROM
+ * @addrmode: how the EEPROM is to be accessed
+ *
+ * Returns 1 for a successful read
+ */
+static int eeprom_read(struct et131x_adapter *adapter, u32 addr, u8 *pdata)
+{
+	struct pci_dev *pdev = adapter->pdev;
+	int err;
+	u32 status;
+
+	/*
+	 * A single byte read is similar to the single byte write, with the
+	 * exception of the data flow:
+	 */
+
+	err = eeprom_wait_ready(pdev, NULL);
+	if (err)
+		return err;
+	/*
+	 * Write to the LBCIF Control Register:  bit 7=1, bit 6=0, bit 3=0,
+	 * and bits 1:0 both =0.  Bit 5 should be set according to the type
+	 * of EEPROM being accessed (1=two byte addressing, 0=one byte
+	 * addressing).
+	 */
+	if (pci_write_config_byte(pdev, LBCIF_CONTROL_REGISTER,
+				  LBCIF_CONTROL_LBCIF_ENABLE))
+		return -EIO;
+	/*
+	 * Write the address to the LBCIF Address Register (I2C read will
+	 * begin).
+	 */
+	if (pci_write_config_dword(pdev, LBCIF_ADDRESS_REGISTER, addr))
+		return -EIO;
+	/*
+	 * Monitor bit 0 of the LBCIF Status Register.  When = 1, I2C read
+	 * is complete. (if bit 1 =1 and bit 0 stays = 0, a hardware failure
+	 * has occurred).
+	 */
+	err = eeprom_wait_ready(pdev, &status);
+	if (err < 0)
+		return err;
+	/*
+	 * Regardless of error status, read data byte from LBCIF Data
+	 * Register.
+	 */
+	*pdata = err;
+	/*
+	 * Check bit 2 of the LBCIF Status Register.  If = 1,
+	 * then an error has occurred.
+	 */
+	return (status & LBCIF_STATUS_ACK_ERROR) ? -EIO : 0;
+}
+
+int et131x_init_eeprom(struct et131x_adapter *adapter)
+{
+	struct pci_dev *pdev = adapter->pdev;
+	u8 eestatus;
+
+	/* We first need to check the EEPROM Status code located at offset
+	 * 0xB2 of config space
+	 */
+	pci_read_config_byte(pdev, ET1310_PCI_EEPROM_STATUS,
+				      &eestatus);
+
+	/* THIS IS A WORKAROUND:
+	 * I need to call this function twice to get my card in a
+	 * LG M1 Express Dual running. I tried also a msleep before this
+	 * function, because I thougth there could be some time condidions
+	 * but it didn't work. Call the whole function twice also work.
+	 */
+	if (pci_read_config_byte(pdev, ET1310_PCI_EEPROM_STATUS, &eestatus)) {
+		dev_err(&pdev->dev,
+		       "Could not read PCI config space for EEPROM Status\n");
+		return -EIO;
+	}
+
+	/* Determine if the error(s) we care about are present. If they are
+	 * present we need to fail.
+	 */
+	if (eestatus & 0x4C) {
+		int write_failed = 0;
+		if (pdev->revision == 0x01) {
+			int	i;
+			static const u8 eedata[4] = { 0xFE, 0x13, 0x10, 0xFF };
+
+			/* Re-write the first 4 bytes if we have an eeprom
+			 * present and the revision id is 1, this fixes the
+			 * corruption seen with 1310 B Silicon
+			 */
+			for (i = 0; i < 3; i++)
+				if (eeprom_write(adapter, i, eedata[i]) < 0)
+					write_failed = 1;
+		}
+		if (pdev->revision  != 0x01 || write_failed) {
+			dev_err(&pdev->dev,
+			    "Fatal EEPROM Status Error - 0x%04x\n", eestatus);
+
+			/* This error could mean that there was an error
+			 * reading the eeprom or that the eeprom doesn't exist.
+			 * We will treat each case the same and not try to
+			 * gather additional information that normally would
+			 * come from the eeprom, like MAC Address
+			 */
+			adapter->has_eeprom = 0;
+			return -EIO;
+		}
+	}
+	adapter->has_eeprom = 1;
+
+	/* Read the EEPROM for information regarding LED behavior. Refer to
+	 * ET1310_phy.c, et131x_xcvr_init(), for its use.
+	 */
+	eeprom_read(adapter, 0x70, &adapter->eeprom_data[0]);
+	eeprom_read(adapter, 0x71, &adapter->eeprom_data[1]);
+
+	if (adapter->eeprom_data[0] != 0xcd)
+		/* Disable all optional features */
+		adapter->eeprom_data[1] = 0x00;
+
+	return 0;
+}
+
+/* MAC functions */
+
+/**
+ * et1310_config_mac_regs1 - Initialize the first part of MAC regs
+ * @adapter: pointer to our adapter structure
+ */
+void et1310_config_mac_regs1(struct et131x_adapter *adapter)
+{
+	struct mac_regs __iomem *macregs = &adapter->regs->mac;
+	u32 station1;
+	u32 station2;
+	u32 ipg;
+
+	/* First we need to reset everything.  Write to MAC configuration
+	 * register 1 to perform reset.
+	 */
+	writel(0xC00F0000, &macregs->cfg1);
+
+	/* Next lets configure the MAC Inter-packet gap register */
+	ipg = 0x38005860;		/* IPG1 0x38 IPG2 0x58 B2B 0x60 */
+	ipg |= 0x50 << 8;		/* ifg enforce 0x50 */
+	writel(ipg, &macregs->ipg);
+
+	/* Next lets configure the MAC Half Duplex register */
+	/* BEB trunc 0xA, Ex Defer, Rexmit 0xF Coll 0x37 */
+	writel(0x00A1F037, &macregs->hfdp);
+
+	/* Next lets configure the MAC Interface Control register */
+	writel(0, &macregs->if_ctrl);
+
+	/* Let's move on to setting up the mii management configuration */
+	writel(0x07, &macregs->mii_mgmt_cfg);	/* Clock reset 0x7 */
+
+	/* Next lets configure the MAC Station Address register.  These
+	 * values are read from the EEPROM during initialization and stored
+	 * in the adapter structure.  We write what is stored in the adapter
+	 * structure to the MAC Station Address registers high and low.  This
+	 * station address is used for generating and checking pause control
+	 * packets.
+	 */
+	station2 = (adapter->addr[1] << ET_MAC_STATION_ADDR2_OC2_SHIFT) |
+		   (adapter->addr[0] << ET_MAC_STATION_ADDR2_OC1_SHIFT);
+	station1 = (adapter->addr[5] << ET_MAC_STATION_ADDR1_OC6_SHIFT) |
+		   (adapter->addr[4] << ET_MAC_STATION_ADDR1_OC5_SHIFT) |
+		   (adapter->addr[3] << ET_MAC_STATION_ADDR1_OC4_SHIFT) |
+		    adapter->addr[2];
+	writel(station1, &macregs->station_addr_1);
+	writel(station2, &macregs->station_addr_2);
+
+	/* Max ethernet packet in bytes that will passed by the mac without
+	 * being truncated.  Allow the MAC to pass 4 more than our max packet
+	 * size.  This is 4 for the Ethernet CRC.
+	 *
+	 * Packets larger than (registry_jumbo_packet) that do not contain a
+	 * VLAN ID will be dropped by the Rx function.
+	 */
+	writel(adapter->registry_jumbo_packet + 4, &macregs->max_fm_len);
+
+	/* clear out MAC config reset */
+	writel(0, &macregs->cfg1);
+}
+
+/**
+ * et1310_config_mac_regs2 - Initialize the second part of MAC regs
+ * @adapter: pointer to our adapter structure
+ */
+void et1310_config_mac_regs2(struct et131x_adapter *adapter)
+{
+	int32_t delay = 0;
+	struct mac_regs __iomem *mac = &adapter->regs->mac;
+	struct phy_device *phydev = adapter->phydev;
+	u32 cfg1;
+	u32 cfg2;
+	u32 ifctrl;
+	u32 ctl;
+
+	ctl = readl(&adapter->regs->txmac.ctl);
+	cfg1 = readl(&mac->cfg1);
+	cfg2 = readl(&mac->cfg2);
+	ifctrl = readl(&mac->if_ctrl);
+
+	/* Set up the if mode bits */
+	cfg2 &= ~0x300;
+	if (phydev && phydev->speed == SPEED_1000) {
+		cfg2 |= 0x200;
+		/* Phy mode bit */
+		ifctrl &= ~(1 << 24);
+	} else {
+		cfg2 |= 0x100;
+		ifctrl |= (1 << 24);
+	}
+
+	/* We need to enable Rx/Tx */
+	cfg1 |= CFG1_RX_ENABLE | CFG1_TX_ENABLE | CFG1_TX_FLOW;
+	/* Initialize loop back to off */
+	cfg1 &= ~(CFG1_LOOPBACK | CFG1_RX_FLOW);
+	if (adapter->flowcontrol == FLOW_RXONLY ||
+				adapter->flowcontrol == FLOW_BOTH)
+		cfg1 |= CFG1_RX_FLOW;
+	writel(cfg1, &mac->cfg1);
+
+	/* Now we need to initialize the MAC Configuration 2 register */
+	/* preamble 7, check length, huge frame off, pad crc, crc enable
+	   full duplex off */
+	cfg2 |= 0x7016;
+	cfg2 &= ~0x0021;
+
+	/* Turn on duplex if needed */
+	if (phydev && phydev->duplex == DUPLEX_FULL)
+		cfg2 |= 0x01;
+
+	ifctrl &= ~(1 << 26);
+	if (phydev && phydev->duplex == DUPLEX_HALF)
+		ifctrl |= (1<<26);	/* Enable ghd */
+
+	writel(ifctrl, &mac->if_ctrl);
+	writel(cfg2, &mac->cfg2);
+
+	do {
+		udelay(10);
+		delay++;
+		cfg1 = readl(&mac->cfg1);
+	} while ((cfg1 & CFG1_WAIT) != CFG1_WAIT && delay < 100);
+
+	if (delay == 100) {
+		dev_warn(&adapter->pdev->dev,
+		    "Syncd bits did not respond correctly cfg1 word 0x%08x\n",
+			cfg1);
+	}
+
+	/* Enable txmac */
+	ctl |= 0x09;	/* TX mac enable, FC disable */
+	writel(ctl, &adapter->regs->txmac.ctl);
+
+	/* Ready to start the RXDMA/TXDMA engine */
+	if (adapter->flags & fMP_ADAPTER_LOWER_POWER) {
+		et131x_rx_dma_enable(adapter);
+		et131x_tx_dma_enable(adapter);
+	}
+}
+
+void et1310_config_rxmac_regs(struct et131x_adapter *adapter)
+{
+	struct rxmac_regs __iomem *rxmac = &adapter->regs->rxmac;
+	struct phy_device *phydev = adapter->phydev;
+	u32 sa_lo;
+	u32 sa_hi = 0;
+	u32 pf_ctrl = 0;
+
+	/* Disable the MAC while it is being configured (also disable WOL) */
+	writel(0x8, &rxmac->ctrl);
+
+	/* Initialize WOL to disabled. */
+	writel(0, &rxmac->crc0);
+	writel(0, &rxmac->crc12);
+	writel(0, &rxmac->crc34);
+
+	/* We need to set the WOL mask0 - mask4 next.  We initialize it to
+	 * its default Values of 0x00000000 because there are not WOL masks
+	 * as of this time.
+	 */
+	writel(0, &rxmac->mask0_word0);
+	writel(0, &rxmac->mask0_word1);
+	writel(0, &rxmac->mask0_word2);
+	writel(0, &rxmac->mask0_word3);
+
+	writel(0, &rxmac->mask1_word0);
+	writel(0, &rxmac->mask1_word1);
+	writel(0, &rxmac->mask1_word2);
+	writel(0, &rxmac->mask1_word3);
+
+	writel(0, &rxmac->mask2_word0);
+	writel(0, &rxmac->mask2_word1);
+	writel(0, &rxmac->mask2_word2);
+	writel(0, &rxmac->mask2_word3);
+
+	writel(0, &rxmac->mask3_word0);
+	writel(0, &rxmac->mask3_word1);
+	writel(0, &rxmac->mask3_word2);
+	writel(0, &rxmac->mask3_word3);
+
+	writel(0, &rxmac->mask4_word0);
+	writel(0, &rxmac->mask4_word1);
+	writel(0, &rxmac->mask4_word2);
+	writel(0, &rxmac->mask4_word3);
+
+	/* Lets setup the WOL Source Address */
+	sa_lo = (adapter->addr[2] << ET_WOL_LO_SA3_SHIFT) |
+		(adapter->addr[3] << ET_WOL_LO_SA4_SHIFT) |
+		(adapter->addr[4] << ET_WOL_LO_SA5_SHIFT) |
+		 adapter->addr[5];
+	writel(sa_lo, &rxmac->sa_lo);
+
+	sa_hi = (u32) (adapter->addr[0] << ET_WOL_HI_SA1_SHIFT) |
+		       adapter->addr[1];
+	writel(sa_hi, &rxmac->sa_hi);
+
+	/* Disable all Packet Filtering */
+	writel(0, &rxmac->pf_ctrl);
+
+	/* Let's initialize the Unicast Packet filtering address */
+	if (adapter->packet_filter & ET131X_PACKET_TYPE_DIRECTED) {
+		et1310_setup_device_for_unicast(adapter);
+		pf_ctrl |= 4;	/* Unicast filter */
+	} else {
+		writel(0, &rxmac->uni_pf_addr1);
+		writel(0, &rxmac->uni_pf_addr2);
+		writel(0, &rxmac->uni_pf_addr3);
+	}
+
+	/* Let's initialize the Multicast hash */
+	if (!(adapter->packet_filter & ET131X_PACKET_TYPE_ALL_MULTICAST)) {
+		pf_ctrl |= 2;	/* Multicast filter */
+		et1310_setup_device_for_multicast(adapter);
+	}
+
+	/* Runt packet filtering.  Didn't work in version A silicon. */
+	pf_ctrl |= (NIC_MIN_PACKET_SIZE + 4) << 16;
+	pf_ctrl |= 8;	/* Fragment filter */
+
+	if (adapter->registry_jumbo_packet > 8192)
+		/* In order to transmit jumbo packets greater than 8k, the
+		 * FIFO between RxMAC and RxDMA needs to be reduced in size
+		 * to (16k - Jumbo packet size).  In order to implement this,
+		 * we must use "cut through" mode in the RxMAC, which chops
+		 * packets down into segments which are (max_size * 16).  In
+		 * this case we selected 256 bytes, since this is the size of
+		 * the PCI-Express TLP's that the 1310 uses.
+		 *
+		 * seg_en on, fc_en off, size 0x10
+		 */
+		writel(0x41, &rxmac->mcif_ctrl_max_seg);
+	else
+		writel(0, &rxmac->mcif_ctrl_max_seg);
+
+	/* Initialize the MCIF water marks */
+	writel(0, &rxmac->mcif_water_mark);
+
+	/*  Initialize the MIF control */
+	writel(0, &rxmac->mif_ctrl);
+
+	/* Initialize the Space Available Register */
+	writel(0, &rxmac->space_avail);
+
+	/* Initialize the the mif_ctrl register
+	 * bit 3:  Receive code error. One or more nibbles were signaled as
+	 *	   errors  during the reception of the packet.  Clear this
+	 *	   bit in Gigabit, set it in 100Mbit.  This was derived
+	 *	   experimentally at UNH.
+	 * bit 4:  Receive CRC error. The packet's CRC did not match the
+	 *	   internally generated CRC.
+	 * bit 5:  Receive length check error. Indicates that frame length
+	 *	   field value in the packet does not match the actual data
+	 *	   byte length and is not a type field.
+	 * bit 16: Receive frame truncated.
+	 * bit 17: Drop packet enable
+	 */
+	if (phydev && phydev->speed == SPEED_100)
+		writel(0x30038, &rxmac->mif_ctrl);
+	else
+		writel(0x30030, &rxmac->mif_ctrl);
+
+	/* Finally we initialize RxMac to be enabled & WOL disabled.  Packet
+	 * filter is always enabled since it is where the runt packets are
+	 * supposed to be dropped.  For version A silicon, runt packet
+	 * dropping doesn't work, so it is disabled in the pf_ctrl register,
+	 * but we still leave the packet filter on.
+	 */
+	writel(pf_ctrl, &rxmac->pf_ctrl);
+	writel(0x9, &rxmac->ctrl);
+}
+
+void et1310_config_txmac_regs(struct et131x_adapter *adapter)
+{
+	struct txmac_regs __iomem *txmac = &adapter->regs->txmac;
+
+	/* We need to update the Control Frame Parameters
+	 * cfpt - control frame pause timer set to 64 (0x40)
+	 * cfep - control frame extended pause timer set to 0x0
+	 */
+	if (adapter->flowcontrol == FLOW_NONE)
+		writel(0, &txmac->cf_param);
+	else
+		writel(0x40, &txmac->cf_param);
+}
+
+void et1310_config_macstat_regs(struct et131x_adapter *adapter)
+{
+	struct macstat_regs __iomem *macstat =
+		&adapter->regs->macstat;
+
+	/* Next we need to initialize all the macstat registers to zero on
+	 * the device.
+	 */
+	writel(0, &macstat->txrx_0_64_byte_frames);
+	writel(0, &macstat->txrx_65_127_byte_frames);
+	writel(0, &macstat->txrx_128_255_byte_frames);
+	writel(0, &macstat->txrx_256_511_byte_frames);
+	writel(0, &macstat->txrx_512_1023_byte_frames);
+	writel(0, &macstat->txrx_1024_1518_byte_frames);
+	writel(0, &macstat->txrx_1519_1522_gvln_frames);
+
+	writel(0, &macstat->rx_bytes);
+	writel(0, &macstat->rx_packets);
+	writel(0, &macstat->rx_fcs_errs);
+	writel(0, &macstat->rx_multicast_packets);
+	writel(0, &macstat->rx_broadcast_packets);
+	writel(0, &macstat->rx_control_frames);
+	writel(0, &macstat->rx_pause_frames);
+	writel(0, &macstat->rx_unknown_opcodes);
+	writel(0, &macstat->rx_align_errs);
+	writel(0, &macstat->rx_frame_len_errs);
+	writel(0, &macstat->rx_code_errs);
+	writel(0, &macstat->rx_carrier_sense_errs);
+	writel(0, &macstat->rx_undersize_packets);
+	writel(0, &macstat->rx_oversize_packets);
+	writel(0, &macstat->rx_fragment_packets);
+	writel(0, &macstat->rx_jabbers);
+	writel(0, &macstat->rx_drops);
+
+	writel(0, &macstat->tx_bytes);
+	writel(0, &macstat->tx_packets);
+	writel(0, &macstat->tx_multicast_packets);
+	writel(0, &macstat->tx_broadcast_packets);
+	writel(0, &macstat->tx_pause_frames);
+	writel(0, &macstat->tx_deferred);
+	writel(0, &macstat->tx_excessive_deferred);
+	writel(0, &macstat->tx_single_collisions);
+	writel(0, &macstat->tx_multiple_collisions);
+	writel(0, &macstat->tx_late_collisions);
+	writel(0, &macstat->tx_excessive_collisions);
+	writel(0, &macstat->tx_total_collisions);
+	writel(0, &macstat->tx_pause_honored_frames);
+	writel(0, &macstat->tx_drops);
+	writel(0, &macstat->tx_jabbers);
+	writel(0, &macstat->tx_fcs_errs);
+	writel(0, &macstat->tx_control_frames);
+	writel(0, &macstat->tx_oversize_frames);
+	writel(0, &macstat->tx_undersize_frames);
+	writel(0, &macstat->tx_fragments);
+	writel(0, &macstat->carry_reg1);
+	writel(0, &macstat->carry_reg2);
+
+	/* Unmask any counters that we want to track the overflow of.
+	 * Initially this will be all counters.  It may become clear later
+	 * that we do not need to track all counters.
+	 */
+	writel(0xFFFFBE32, &macstat->carry_reg1_mask);
+	writel(0xFFFE7E8B, &macstat->carry_reg2_mask);
+}
+
+void et1310_config_flow_control(struct et131x_adapter *adapter)
+{
+	struct phy_device *phydev = adapter->phydev;
+
+	if (phydev->duplex == DUPLEX_HALF) {
+		adapter->flowcontrol = FLOW_NONE;
+	} else {
+		char remote_pause, remote_async_pause;
+
+		et1310_phy_access_mii_bit(adapter,
+				TRUEPHY_BIT_READ, 5, 10, &remote_pause);
+		et1310_phy_access_mii_bit(adapter,
+				TRUEPHY_BIT_READ, 5, 11,
+				&remote_async_pause);
+
+		if ((remote_pause == TRUEPHY_BIT_SET) &&
+		    (remote_async_pause == TRUEPHY_BIT_SET)) {
+			adapter->flowcontrol = adapter->wanted_flow;
+		} else if ((remote_pause == TRUEPHY_BIT_SET) &&
+			   (remote_async_pause == TRUEPHY_BIT_CLEAR)) {
+			if (adapter->wanted_flow == FLOW_BOTH)
+				adapter->flowcontrol = FLOW_BOTH;
+			else
+				adapter->flowcontrol = FLOW_NONE;
+		} else if ((remote_pause == TRUEPHY_BIT_CLEAR) &&
+			   (remote_async_pause == TRUEPHY_BIT_CLEAR)) {
+			adapter->flowcontrol = FLOW_NONE;
+		} else {/* if (remote_pause == TRUEPHY_CLEAR_BIT &&
+			       remote_async_pause == TRUEPHY_SET_BIT) */
+			if (adapter->wanted_flow == FLOW_BOTH)
+				adapter->flowcontrol = FLOW_RXONLY;
+			else
+				adapter->flowcontrol = FLOW_NONE;
+		}
+	}
+}
+
+/**
+ * et1310_update_macstat_host_counters - Update the local copy of the statistics
+ * @adapter: pointer to the adapter structure
+ */
+void et1310_update_macstat_host_counters(struct et131x_adapter *adapter)
+{
+	struct ce_stats *stats = &adapter->stats;
+	struct macstat_regs __iomem *macstat =
+		&adapter->regs->macstat;
+
+	stats->tx_collisions	       += readl(&macstat->tx_total_collisions);
+	stats->tx_first_collisions     += readl(&macstat->tx_single_collisions);
+	stats->tx_deferred	       += readl(&macstat->tx_deferred);
+	stats->tx_excessive_collisions +=
+				readl(&macstat->tx_multiple_collisions);
+	stats->tx_late_collisions      += readl(&macstat->tx_late_collisions);
+	stats->tx_underflows	       += readl(&macstat->tx_undersize_frames);
+	stats->tx_max_pkt_errs	       += readl(&macstat->tx_oversize_frames);
+
+	stats->rx_align_errs        += readl(&macstat->rx_align_errs);
+	stats->rx_crc_errs          += readl(&macstat->rx_code_errs);
+	stats->rcvd_pkts_dropped    += readl(&macstat->rx_drops);
+	stats->rx_overflows         += readl(&macstat->rx_oversize_packets);
+	stats->rx_code_violations   += readl(&macstat->rx_fcs_errs);
+	stats->rx_length_errs       += readl(&macstat->rx_frame_len_errs);
+	stats->rx_other_errs        += readl(&macstat->rx_fragment_packets);
+}
+
+/**
+ * et1310_handle_macstat_interrupt
+ * @adapter: pointer to the adapter structure
+ *
+ * One of the MACSTAT counters has wrapped.  Update the local copy of
+ * the statistics held in the adapter structure, checking the "wrap"
+ * bit for each counter.
+ */
+void et1310_handle_macstat_interrupt(struct et131x_adapter *adapter)
+{
+	u32 carry_reg1;
+	u32 carry_reg2;
+
+	/* Read the interrupt bits from the register(s).  These are Clear On
+	 * Write.
+	 */
+	carry_reg1 = readl(&adapter->regs->macstat.carry_reg1);
+	carry_reg2 = readl(&adapter->regs->macstat.carry_reg2);
+
+	writel(carry_reg1, &adapter->regs->macstat.carry_reg1);
+	writel(carry_reg2, &adapter->regs->macstat.carry_reg2);
+
+	/* We need to do update the host copy of all the MAC_STAT counters.
+	 * For each counter, check it's overflow bit.  If the overflow bit is
+	 * set, then increment the host version of the count by one complete
+	 * revolution of the counter.  This routine is called when the counter
+	 * block indicates that one of the counters has wrapped.
+	 */
+	if (carry_reg1 & (1 << 14))
+		adapter->stats.rx_code_violations	+= COUNTER_WRAP_16_BIT;
+	if (carry_reg1 & (1 << 8))
+		adapter->stats.rx_align_errs	+= COUNTER_WRAP_12_BIT;
+	if (carry_reg1 & (1 << 7))
+		adapter->stats.rx_length_errs	+= COUNTER_WRAP_16_BIT;
+	if (carry_reg1 & (1 << 2))
+		adapter->stats.rx_other_errs	+= COUNTER_WRAP_16_BIT;
+	if (carry_reg1 & (1 << 6))
+		adapter->stats.rx_crc_errs	+= COUNTER_WRAP_16_BIT;
+	if (carry_reg1 & (1 << 3))
+		adapter->stats.rx_overflows	+= COUNTER_WRAP_16_BIT;
+	if (carry_reg1 & (1 << 0))
+		adapter->stats.rcvd_pkts_dropped	+= COUNTER_WRAP_16_BIT;
+	if (carry_reg2 & (1 << 16))
+		adapter->stats.tx_max_pkt_errs	+= COUNTER_WRAP_12_BIT;
+	if (carry_reg2 & (1 << 15))
+		adapter->stats.tx_underflows	+= COUNTER_WRAP_12_BIT;
+	if (carry_reg2 & (1 << 6))
+		adapter->stats.tx_first_collisions += COUNTER_WRAP_12_BIT;
+	if (carry_reg2 & (1 << 8))
+		adapter->stats.tx_deferred	+= COUNTER_WRAP_12_BIT;
+	if (carry_reg2 & (1 << 5))
+		adapter->stats.tx_excessive_collisions += COUNTER_WRAP_12_BIT;
+	if (carry_reg2 & (1 << 4))
+		adapter->stats.tx_late_collisions	+= COUNTER_WRAP_12_BIT;
+	if (carry_reg2 & (1 << 2))
+		adapter->stats.tx_collisions	+= COUNTER_WRAP_12_BIT;
+}
+
+void et1310_setup_device_for_multicast(struct et131x_adapter *adapter)
+{
+	struct rxmac_regs __iomem *rxmac = &adapter->regs->rxmac;
+	uint32_t nIndex;
+	uint32_t result;
+	uint32_t hash1 = 0;
+	uint32_t hash2 = 0;
+	uint32_t hash3 = 0;
+	uint32_t hash4 = 0;
+	u32 pm_csr;
+
+	/* If ET131X_PACKET_TYPE_MULTICAST is specified, then we provision
+	 * the multi-cast LIST.  If it is NOT specified, (and "ALL" is not
+	 * specified) then we should pass NO multi-cast addresses to the
+	 * driver.
+	 */
+	if (adapter->packet_filter & ET131X_PACKET_TYPE_MULTICAST) {
+		/* Loop through our multicast array and set up the device */
+		for (nIndex = 0; nIndex < adapter->multicast_addr_count;
+		     nIndex++) {
+			result = ether_crc(6, adapter->multicast_list[nIndex]);
+
+			result = (result & 0x3F800000) >> 23;
+
+			if (result < 32) {
+				hash1 |= (1 << result);
+			} else if ((31 < result) && (result < 64)) {
+				result -= 32;
+				hash2 |= (1 << result);
+			} else if ((63 < result) && (result < 96)) {
+				result -= 64;
+				hash3 |= (1 << result);
+			} else {
+				result -= 96;
+				hash4 |= (1 << result);
+			}
+		}
+	}
+
+	/* Write out the new hash to the device */
+	pm_csr = readl(&adapter->regs->global.pm_csr);
+	if (!et1310_in_phy_coma(adapter)) {
+		writel(hash1, &rxmac->multi_hash1);
+		writel(hash2, &rxmac->multi_hash2);
+		writel(hash3, &rxmac->multi_hash3);
+		writel(hash4, &rxmac->multi_hash4);
+	}
+}
+
+void et1310_setup_device_for_unicast(struct et131x_adapter *adapter)
+{
+	struct rxmac_regs __iomem *rxmac = &adapter->regs->rxmac;
+	u32 uni_pf1;
+	u32 uni_pf2;
+	u32 uni_pf3;
+	u32 pm_csr;
+
+	/* Set up unicast packet filter reg 3 to be the first two octets of
+	 * the MAC address for both address
+	 *
+	 * Set up unicast packet filter reg 2 to be the octets 2 - 5 of the
+	 * MAC address for second address
+	 *
+	 * Set up unicast packet filter reg 3 to be the octets 2 - 5 of the
+	 * MAC address for first address
+	 */
+	uni_pf3 = (adapter->addr[0] << ET_UNI_PF_ADDR2_1_SHIFT) |
+		  (adapter->addr[1] << ET_UNI_PF_ADDR2_2_SHIFT) |
+		  (adapter->addr[0] << ET_UNI_PF_ADDR1_1_SHIFT) |
+		   adapter->addr[1];
+
+	uni_pf2 = (adapter->addr[2] << ET_UNI_PF_ADDR2_3_SHIFT) |
+		  (adapter->addr[3] << ET_UNI_PF_ADDR2_4_SHIFT) |
+		  (adapter->addr[4] << ET_UNI_PF_ADDR2_5_SHIFT) |
+		   adapter->addr[5];
+
+	uni_pf1 = (adapter->addr[2] << ET_UNI_PF_ADDR1_3_SHIFT) |
+		  (adapter->addr[3] << ET_UNI_PF_ADDR1_4_SHIFT) |
+		  (adapter->addr[4] << ET_UNI_PF_ADDR1_5_SHIFT) |
+		   adapter->addr[5];
+
+	pm_csr = readl(&adapter->regs->global.pm_csr);
+	if (!et1310_in_phy_coma(adapter)) {
+		writel(uni_pf1, &rxmac->uni_pf_addr1);
+		writel(uni_pf2, &rxmac->uni_pf_addr2);
+		writel(uni_pf3, &rxmac->uni_pf_addr3);
+	}
+}
+
+/* PHY functions */
+
+int et131x_mdio_read(struct mii_bus *bus, int phy_addr, int reg)
+{
+	struct net_device *netdev = bus->priv;
+	struct et131x_adapter *adapter = netdev_priv(netdev);
+	u16 value;
+	int ret;
+
+	ret = et131x_phy_mii_read(adapter, phy_addr, reg, &value);
+
+	if (ret < 0)
+		return ret;
+	else
+		return value;
+}
+
+int et131x_mdio_write(struct mii_bus *bus, int phy_addr, int reg, u16 value)
+{
+	struct net_device *netdev = bus->priv;
+	struct et131x_adapter *adapter = netdev_priv(netdev);
+
+	return et131x_mii_write(adapter, reg, value);
+}
+
+int et131x_mdio_reset(struct mii_bus *bus)
+{
+	struct net_device *netdev = bus->priv;
+	struct et131x_adapter *adapter = netdev_priv(netdev);
+
+	et131x_mii_write(adapter, MII_BMCR, BMCR_RESET);
+
+	return 0;
+}
+
+int et131x_mii_read(struct et131x_adapter *adapter, u8 reg, u16 *value)
+{
+	struct phy_device *phydev = adapter->phydev;
+
+	if (!phydev)
+		return -EIO;
+
+	return et131x_phy_mii_read(adapter, phydev->addr, reg, value);
+}
+
+/**
+ * et131x_phy_mii_read - Read from the PHY through the MII Interface on the MAC
+ * @adapter: pointer to our private adapter structure
+ * @addr: the address of the transceiver
+ * @reg: the register to read
+ * @value: pointer to a 16-bit value in which the value will be stored
+ *
+ * Returns 0 on success, errno on failure (as defined in errno.h)
+ */
+int et131x_phy_mii_read(struct et131x_adapter *adapter, u8 addr,
+	      u8 reg, u16 *value)
+{
+	struct mac_regs __iomem *mac = &adapter->regs->mac;
+	int status = 0;
+	u32 delay = 0;
+	u32 mii_addr;
+	u32 mii_cmd;
+	u32 mii_indicator;
+
+	/* Save a local copy of the registers we are dealing with so we can
+	 * set them back
+	 */
+	mii_addr = readl(&mac->mii_mgmt_addr);
+	mii_cmd = readl(&mac->mii_mgmt_cmd);
+
+	/* Stop the current operation */
+	writel(0, &mac->mii_mgmt_cmd);
+
+	/* Set up the register we need to read from on the correct PHY */
+	writel(MII_ADDR(addr, reg), &mac->mii_mgmt_addr);
+
+	writel(0x1, &mac->mii_mgmt_cmd);
+
+	do {
+		udelay(50);
+		delay++;
+		mii_indicator = readl(&mac->mii_mgmt_indicator);
+	} while ((mii_indicator & MGMT_WAIT) && delay < 50);
+
+	/* If we hit the max delay, we could not read the register */
+	if (delay == 50) {
+		dev_warn(&adapter->pdev->dev,
+			    "reg 0x%08x could not be read\n", reg);
+		dev_warn(&adapter->pdev->dev, "status is  0x%08x\n",
+			    mii_indicator);
+
+		status = -EIO;
+	}
+
+	/* If we hit here we were able to read the register and we need to
+	 * return the value to the caller */
+	*value = readl(&mac->mii_mgmt_stat) & 0xFFFF;
+
+	/* Stop the read operation */
+	writel(0, &mac->mii_mgmt_cmd);
+
+	/* set the registers we touched back to the state at which we entered
+	 * this function
+	 */
+	writel(mii_addr, &mac->mii_mgmt_addr);
+	writel(mii_cmd, &mac->mii_mgmt_cmd);
+
+	return status;
+}
+
+/**
+ * et131x_mii_write - Write to a PHY register through the MII interface of the MAC
+ * @adapter: pointer to our private adapter structure
+ * @reg: the register to read
+ * @value: 16-bit value to write
+ *
+ * FIXME: one caller in netdev still
+ *
+ * Return 0 on success, errno on failure (as defined in errno.h)
+ */
+int et131x_mii_write(struct et131x_adapter *adapter, u8 reg, u16 value)
+{
+	struct mac_regs __iomem *mac = &adapter->regs->mac;
+	struct phy_device *phydev = adapter->phydev;
+	int status = 0;
+	u8 addr;
+	u32 delay = 0;
+	u32 mii_addr;
+	u32 mii_cmd;
+	u32 mii_indicator;
+
+	if (!phydev)
+		return -EIO;
+
+	addr = phydev->addr;
+
+	/* Save a local copy of the registers we are dealing with so we can
+	 * set them back
+	 */
+	mii_addr = readl(&mac->mii_mgmt_addr);
+	mii_cmd = readl(&mac->mii_mgmt_cmd);
+
+	/* Stop the current operation */
+	writel(0, &mac->mii_mgmt_cmd);
+
+	/* Set up the register we need to write to on the correct PHY */
+	writel(MII_ADDR(addr, reg), &mac->mii_mgmt_addr);
+
+	/* Add the value to write to the registers to the mac */
+	writel(value, &mac->mii_mgmt_ctrl);
+
+	do {
+		udelay(50);
+		delay++;
+		mii_indicator = readl(&mac->mii_mgmt_indicator);
+	} while ((mii_indicator & MGMT_BUSY) && delay < 100);
+
+	/* If we hit the max delay, we could not write the register */
+	if (delay == 100) {
+		u16 tmp;
+
+		dev_warn(&adapter->pdev->dev,
+		    "reg 0x%08x could not be written", reg);
+		dev_warn(&adapter->pdev->dev, "status is  0x%08x\n",
+			    mii_indicator);
+		dev_warn(&adapter->pdev->dev, "command is  0x%08x\n",
+			    readl(&mac->mii_mgmt_cmd));
+
+		et131x_mii_read(adapter, reg, &tmp);
+
+		status = -EIO;
+	}
+	/* Stop the write operation */
+	writel(0, &mac->mii_mgmt_cmd);
+
+	/*
+	 * set the registers we touched back to the state at which we entered
+	 * this function
+	 */
+	writel(mii_addr, &mac->mii_mgmt_addr);
+	writel(mii_cmd, &mac->mii_mgmt_cmd);
+
+	return status;
+}
+
+/**
+ *	et1310_phy_power_down	-	PHY power control
+ *	@adapter: device to control
+ *	@down: true for off/false for back on
+ *
+ *	one hundred, ten, one thousand megs
+ *	How would you like to have your LAN accessed
+ *	Can't you see that this code processed
+ *	Phy power, phy power..
+ */
+void et1310_phy_power_down(struct et131x_adapter *adapter, bool down)
+{
+	u16 data;
+
+	et131x_mii_read(adapter, MII_BMCR, &data);
+	data &= ~BMCR_PDOWN;
+	if (down)
+		data |= BMCR_PDOWN;
+	et131x_mii_write(adapter, MII_BMCR, data);
+}
+
+/* Still used from _mac for BIT_READ */
+void et1310_phy_access_mii_bit(struct et131x_adapter *adapter, u16 action,
+			       u16 regnum, u16 bitnum, u8 *value)
+{
+	u16 reg;
+	u16 mask = 0x0001 << bitnum;
+
+	/* Read the requested register */
+	et131x_mii_read(adapter, regnum, &reg);
+
+	switch (action) {
+	case TRUEPHY_BIT_READ:
+		*value = (reg & mask) >> bitnum;
+		break;
+
+	case TRUEPHY_BIT_SET:
+		et131x_mii_write(adapter, regnum, reg | mask);
+		break;
+
+	case TRUEPHY_BIT_CLEAR:
+		et131x_mii_write(adapter, regnum, reg & ~mask);
+		break;
+
+	default:
+		break;
+	}
+}
+
+/**
+ * et131x_xcvr_init - Init the phy if we are setting it into force mode
+ * @adapter: pointer to our private adapter structure
+ *
+ */
+void et131x_xcvr_init(struct et131x_adapter *adapter)
+{
+	u16 imr;
+	u16 isr;
+	u16 lcr2;
+
+	et131x_mii_read(adapter, PHY_INTERRUPT_STATUS, &isr);
+	et131x_mii_read(adapter, PHY_INTERRUPT_MASK, &imr);
+
+	/* Set the link status interrupt only.  Bad behavior when link status
+	 * and auto neg are set, we run into a nested interrupt problem
+	 */
+	imr |= (ET_PHY_INT_MASK_AUTONEGSTAT &
+		ET_PHY_INT_MASK_LINKSTAT &
+		ET_PHY_INT_MASK_ENABLE);
+
+	et131x_mii_write(adapter, PHY_INTERRUPT_MASK, imr);
+
+	/* Set the LED behavior such that LED 1 indicates speed (off =
+	 * 10Mbits, blink = 100Mbits, on = 1000Mbits) and LED 2 indicates
+	 * link and activity (on for link, blink off for activity).
+	 *
+	 * NOTE: Some customizations have been added here for specific
+	 * vendors; The LED behavior is now determined by vendor data in the
+	 * EEPROM. However, the above description is the default.
+	 */
+	if ((adapter->eeprom_data[1] & 0x4) == 0) {
+		et131x_mii_read(adapter, PHY_LED_2, &lcr2);
+
+		lcr2 &= (ET_LED2_LED_100TX & ET_LED2_LED_1000T);
+		lcr2 |= (LED_VAL_LINKON_ACTIVE << LED_LINK_SHIFT);
+
+		if ((adapter->eeprom_data[1] & 0x8) == 0)
+			lcr2 |= (LED_VAL_1000BT_100BTX << LED_TXRX_SHIFT);
+		else
+			lcr2 |= (LED_VAL_LINKON << LED_TXRX_SHIFT);
+
+		et131x_mii_write(adapter, PHY_LED_2, lcr2);
+	}
+}
+
+/* PM functions */
+
+/**
+ * et1310_in_phy_coma - check if the device is in phy coma
+ * @adapter: pointer to our adapter structure
+ *
+ * Returns 0 if the device is not in phy coma, 1 if it is in phy coma
+ */
+int et1310_in_phy_coma(struct et131x_adapter *adapter)
+{
+	u32 pmcsr;
+
+	pmcsr = readl(&adapter->regs->global.pm_csr);
+
+	return ET_PM_PHY_SW_COMA & pmcsr ? 1 : 0;
+}
+
+/**
+ * et1310_enable_phy_coma - called when network cable is unplugged
+ * @adapter: pointer to our adapter structure
+ *
+ * driver receive an phy status change interrupt while in D0 and check that
+ * phy_status is down.
+ *
+ *          -- gate off JAGCore;
+ *          -- set gigE PHY in Coma mode
+ *          -- wake on phy_interrupt; Perform software reset JAGCore,
+ *             re-initialize jagcore and gigE PHY
+ *
+ *      Add D0-ASPM-PhyLinkDown Support:
+ *          -- while in D0, when there is a phy_interrupt indicating phy link
+ *             down status, call the MPSetPhyComa routine to enter this active
+ *             state power saving mode
+ *          -- while in D0-ASPM-PhyLinkDown mode, when there is a phy_interrupt
+ *       indicating linkup status, call the MPDisablePhyComa routine to
+ *             restore JAGCore and gigE PHY
+ */
+void et1310_enable_phy_coma(struct et131x_adapter *adapter)
+{
+	unsigned long flags;
+	u32 pmcsr;
+
+	pmcsr = readl(&adapter->regs->global.pm_csr);
+
+	/* Save the GbE PHY speed and duplex modes. Need to restore this
+	 * when cable is plugged back in
+	 */
+	/*
+	 * TODO - when PM is re-enabled, check if we need to
+	 * perform a similar task as this -
+	 * adapter->pdown_speed = adapter->ai_force_speed;
+	 * adapter->pdown_duplex = adapter->ai_force_duplex;
+	 */
+
+	/* Stop sending packets. */
+	spin_lock_irqsave(&adapter->send_hw_lock, flags);
+	adapter->flags |= fMP_ADAPTER_LOWER_POWER;
+	spin_unlock_irqrestore(&adapter->send_hw_lock, flags);
+
+	/* Wait for outstanding Receive packets */
+
+	et131x_disable_txrx(adapter->netdev);
+
+	/* Gate off JAGCore 3 clock domains */
+	pmcsr &= ~ET_PMCSR_INIT;
+	writel(pmcsr, &adapter->regs->global.pm_csr);
+
+	/* Program gigE PHY in to Coma mode */
+	pmcsr |= ET_PM_PHY_SW_COMA;
+	writel(pmcsr, &adapter->regs->global.pm_csr);
+}
+
+/**
+ * et1310_disable_phy_coma - Disable the Phy Coma Mode
+ * @adapter: pointer to our adapter structure
+ */
+void et1310_disable_phy_coma(struct et131x_adapter *adapter)
+{
+	u32 pmcsr;
+
+	pmcsr = readl(&adapter->regs->global.pm_csr);
+
+	/* Disable phy_sw_coma register and re-enable JAGCore clocks */
+	pmcsr |= ET_PMCSR_INIT;
+	pmcsr &= ~ET_PM_PHY_SW_COMA;
+	writel(pmcsr, &adapter->regs->global.pm_csr);
+
+	/* Restore the GbE PHY speed and duplex modes;
+	 * Reset JAGCore; re-configure and initialize JAGCore and gigE PHY
+	 */
+	/* TODO - when PM is re-enabled, check if we need to
+	 * perform a similar task as this -
+	 * adapter->ai_force_speed = adapter->pdown_speed;
+	 * adapter->ai_force_duplex = adapter->pdown_duplex;
+	 */
+
+	/* Re-initialize the send structures */
+	et131x_init_send(adapter);
+
+	/* Reset the RFD list and re-start RU  */
+	et131x_reset_recv(adapter);
+
+	/* Bring the device back to the state it was during init prior to
+	 * autonegotiation being complete.  This way, when we get the auto-neg
+	 * complete interrupt, we can complete init by calling ConfigMacREGS2.
+	 */
+	et131x_soft_reset(adapter);
+
+	/* setup et1310 as per the documentation ?? */
+	et131x_adapter_setup(adapter);
+
+	/* Allow Tx to restart */
+	adapter->flags &= ~fMP_ADAPTER_LOWER_POWER;
+
+	et131x_enable_txrx(adapter->netdev);
+}
+
+/* RX functions */
+
+static inline u32 bump_free_buff_ring(u32 *free_buff_ring, u32 limit)
+{
+	u32 tmp_free_buff_ring = *free_buff_ring;
+	tmp_free_buff_ring++;
+	/* This works for all cases where limit < 1024. The 1023 case
+	   works because 1023++ is 1024 which means the if condition is not
+	   taken but the carry of the bit into the wrap bit toggles the wrap
+	   value correctly */
+	if ((tmp_free_buff_ring & ET_DMA10_MASK) > limit) {
+		tmp_free_buff_ring &= ~ET_DMA10_MASK;
+		tmp_free_buff_ring ^= ET_DMA10_WRAP;
+	}
+	/* For the 1023 case */
+	tmp_free_buff_ring &= (ET_DMA10_MASK|ET_DMA10_WRAP);
+	*free_buff_ring = tmp_free_buff_ring;
+	return tmp_free_buff_ring;
+}
+
+/**
+ * et131x_rx_dma_memory_alloc
+ * @adapter: pointer to our private adapter structure
+ *
+ * Returns 0 on success and errno on failure (as defined in errno.h)
+ *
+ * Allocates Free buffer ring 1 for sure, free buffer ring 0 if required,
+ * and the Packet Status Ring.
+ */
+int et131x_rx_dma_memory_alloc(struct et131x_adapter *adapter)
+{
+	u32 i, j;
+	u32 bufsize;
+	u32 pktstat_ringsize, fbr_chunksize;
+	struct rx_ring *rx_ring;
+
+	/* Setup some convenience pointers */
+	rx_ring = &adapter->rx_ring;
+
+	/* Alloc memory for the lookup table */
+#ifdef USE_FBR0
+	rx_ring->fbr[0] = kmalloc(sizeof(struct fbr_lookup), GFP_KERNEL);
+#endif
+	rx_ring->fbr[1] = kmalloc(sizeof(struct fbr_lookup), GFP_KERNEL);
+
+	/* The first thing we will do is configure the sizes of the buffer
+	 * rings. These will change based on jumbo packet support.  Larger
+	 * jumbo packets increases the size of each entry in FBR0, and the
+	 * number of entries in FBR0, while at the same time decreasing the
+	 * number of entries in FBR1.
+	 *
+	 * FBR1 holds "large" frames, FBR0 holds "small" frames.  If FBR1
+	 * entries are huge in order to accommodate a "jumbo" frame, then it
+	 * will have less entries.  Conversely, FBR1 will now be relied upon
+	 * to carry more "normal" frames, thus it's entry size also increases
+	 * and the number of entries goes up too (since it now carries
+	 * "small" + "regular" packets.
+	 *
+	 * In this scheme, we try to maintain 512 entries between the two
+	 * rings. Also, FBR1 remains a constant size - when it's size doubles
+	 * the number of entries halves.  FBR0 increases in size, however.
+	 */
+
+	if (adapter->registry_jumbo_packet < 2048) {
+#ifdef USE_FBR0
+		rx_ring->fbr0_buffsize = 256;
+		rx_ring->fbr0_num_entries = 512;
+#endif
+		rx_ring->fbr1_buffsize = 2048;
+		rx_ring->fbr1_num_entries = 512;
+	} else if (adapter->registry_jumbo_packet < 4096) {
+#ifdef USE_FBR0
+		rx_ring->fbr0_buffsize = 512;
+		rx_ring->fbr0_num_entries = 1024;
+#endif
+		rx_ring->fbr1_buffsize = 4096;
+		rx_ring->fbr1_num_entries = 512;
+	} else {
+#ifdef USE_FBR0
+		rx_ring->fbr0_buffsize = 1024;
+		rx_ring->fbr0_num_entries = 768;
+#endif
+		rx_ring->fbr1_buffsize = 16384;
+		rx_ring->fbr1_num_entries = 128;
+	}
+
+#ifdef USE_FBR0
+	adapter->rx_ring.psr_num_entries = adapter->rx_ring.fbr0_num_entries +
+	    adapter->rx_ring.fbr1_num_entries;
+#else
+	adapter->rx_ring.psr_num_entries = adapter->rx_ring.fbr1_num_entries;
+#endif
+
+	/* Allocate an area of memory for Free Buffer Ring 1 */
+	bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr1_num_entries) + 0xfff;
+	rx_ring->fbr1_ring_virtaddr = pci_alloc_consistent(adapter->pdev,
+						bufsize,
+						&rx_ring->fbr1_ring_physaddr);
+	if (!rx_ring->fbr1_ring_virtaddr) {
+		dev_err(&adapter->pdev->dev,
+			  "Cannot alloc memory for Free Buffer Ring 1\n");
+		return -ENOMEM;
+	}
+
+	/* Save physical address
+	 *
+	 * NOTE: pci_alloc_consistent(), used above to alloc DMA regions,
+	 * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses
+	 * are ever returned, make sure the high part is retrieved here
+	 * before storing the adjusted address.
+	 */
+	rx_ring->fbr1_real_physaddr = rx_ring->fbr1_ring_physaddr;
+
+	/* Align Free Buffer Ring 1 on a 4K boundary */
+	et131x_align_allocated_memory(adapter,
+				      &rx_ring->fbr1_real_physaddr,
+				      &rx_ring->fbr1_offset, 0x0FFF);
+
+	rx_ring->fbr1_ring_virtaddr =
+			(void *)((u8 *) rx_ring->fbr1_ring_virtaddr +
+			rx_ring->fbr1_offset);
+
+#ifdef USE_FBR0
+	/* Allocate an area of memory for Free Buffer Ring 0 */
+	bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr0_num_entries) + 0xfff;
+	rx_ring->fbr0_ring_virtaddr = pci_alloc_consistent(adapter->pdev,
+						bufsize,
+						&rx_ring->fbr0_ring_physaddr);
+	if (!rx_ring->fbr0_ring_virtaddr) {
+		dev_err(&adapter->pdev->dev,
+			  "Cannot alloc memory for Free Buffer Ring 0\n");
+		return -ENOMEM;
+	}
+
+	/* Save physical address
+	 *
+	 * NOTE: pci_alloc_consistent(), used above to alloc DMA regions,
+	 * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses
+	 * are ever returned, make sure the high part is retrieved here before
+	 * storing the adjusted address.
+	 */
+	rx_ring->fbr0_real_physaddr = rx_ring->fbr0_ring_physaddr;
+
+	/* Align Free Buffer Ring 0 on a 4K boundary */
+	et131x_align_allocated_memory(adapter,
+				      &rx_ring->fbr0_real_physaddr,
+				      &rx_ring->fbr0_offset, 0x0FFF);
+
+	rx_ring->fbr0_ring_virtaddr =
+				(void *)((u8 *) rx_ring->fbr0_ring_virtaddr +
+				rx_ring->fbr0_offset);
+#endif
+	for (i = 0; i < (rx_ring->fbr1_num_entries / FBR_CHUNKS); i++) {
+		u64 fbr1_offset;
+		u64 fbr1_tmp_physaddr;
+		u32 fbr1_align;
+
+		/* This code allocates an area of memory big enough for N
+		 * free buffers + (buffer_size - 1) so that the buffers can
+		 * be aligned on 4k boundaries.  If each buffer were aligned
+		 * to a buffer_size boundary, the effect would be to double
+		 * the size of FBR0.  By allocating N buffers at once, we
+		 * reduce this overhead.
+		 */
+		if (rx_ring->fbr1_buffsize > 4096)
+			fbr1_align = 4096;
+		else
+			fbr1_align = rx_ring->fbr1_buffsize;
+
+		fbr_chunksize =
+		    (FBR_CHUNKS * rx_ring->fbr1_buffsize) + fbr1_align - 1;
+		rx_ring->fbr1_mem_virtaddrs[i] =
+		    pci_alloc_consistent(adapter->pdev, fbr_chunksize,
+					 &rx_ring->fbr1_mem_physaddrs[i]);
+
+		if (!rx_ring->fbr1_mem_virtaddrs[i]) {
+			dev_err(&adapter->pdev->dev,
+				"Could not alloc memory\n");
+			return -ENOMEM;
+		}
+
+		/* See NOTE in "Save Physical Address" comment above */
+		fbr1_tmp_physaddr = rx_ring->fbr1_mem_physaddrs[i];
+
+		et131x_align_allocated_memory(adapter,
+					      &fbr1_tmp_physaddr,
+					      &fbr1_offset, (fbr1_align - 1));
+
+		for (j = 0; j < FBR_CHUNKS; j++) {
+			u32 index = (i * FBR_CHUNKS) + j;
+
+			/* Save the Virtual address of this index for quick
+			 * access later
+			 */
+			rx_ring->fbr[1]->virt[index] =
+			    (u8 *) rx_ring->fbr1_mem_virtaddrs[i] +
+			    (j * rx_ring->fbr1_buffsize) + fbr1_offset;
+
+			/* now store the physical address in the descriptor
+			 * so the device can access it
+			 */
+			rx_ring->fbr[1]->bus_high[index] =
+			    (u32) (fbr1_tmp_physaddr >> 32);
+			rx_ring->fbr[1]->bus_low[index] =
+			    (u32) fbr1_tmp_physaddr;
+
+			fbr1_tmp_physaddr += rx_ring->fbr1_buffsize;
+
+			rx_ring->fbr[1]->buffer1[index] =
+			    rx_ring->fbr[1]->virt[index];
+			rx_ring->fbr[1]->buffer2[index] =
+			    rx_ring->fbr[1]->virt[index] - 4;
+		}
+	}
+
+#ifdef USE_FBR0
+	/* Same for FBR0 (if in use) */
+	for (i = 0; i < (rx_ring->fbr0_num_entries / FBR_CHUNKS); i++) {
+		u64 fbr0_offset;
+		u64 fbr0_tmp_physaddr;
+
+		fbr_chunksize =
+		    ((FBR_CHUNKS + 1) * rx_ring->fbr0_buffsize) - 1;
+		rx_ring->fbr0_mem_virtaddrs[i] =
+		    pci_alloc_consistent(adapter->pdev, fbr_chunksize,
+					 &rx_ring->fbr0_mem_physaddrs[i]);
+
+		if (!rx_ring->fbr0_mem_virtaddrs[i]) {
+			dev_err(&adapter->pdev->dev,
+				"Could not alloc memory\n");
+			return -ENOMEM;
+		}
+
+		/* See NOTE in "Save Physical Address" comment above */
+		fbr0_tmp_physaddr = rx_ring->fbr0_mem_physaddrs[i];
+
+		et131x_align_allocated_memory(adapter,
+					      &fbr0_tmp_physaddr,
+					      &fbr0_offset,
+					      rx_ring->fbr0_buffsize - 1);
+
+		for (j = 0; j < FBR_CHUNKS; j++) {
+			u32 index = (i * FBR_CHUNKS) + j;
+
+			rx_ring->fbr[0]->virt[index] =
+			    (u8 *) rx_ring->fbr0_mem_virtaddrs[i] +
+			    (j * rx_ring->fbr0_buffsize) + fbr0_offset;
+
+			rx_ring->fbr[0]->bus_high[index] =
+			    (u32) (fbr0_tmp_physaddr >> 32);
+			rx_ring->fbr[0]->bus_low[index] =
+			    (u32) fbr0_tmp_physaddr;
+
+			fbr0_tmp_physaddr += rx_ring->fbr0_buffsize;
+
+			rx_ring->fbr[0]->buffer1[index] =
+			    rx_ring->fbr[0]->virt[index];
+			rx_ring->fbr[0]->buffer2[index] =
+			    rx_ring->fbr[0]->virt[index] - 4;
+		}
+	}
+#endif
+
+	/* Allocate an area of memory for FIFO of Packet Status ring entries */
+	pktstat_ringsize =
+	    sizeof(struct pkt_stat_desc) * adapter->rx_ring.psr_num_entries;
+
+	rx_ring->ps_ring_virtaddr = pci_alloc_consistent(adapter->pdev,
+						  pktstat_ringsize,
+						  &rx_ring->ps_ring_physaddr);
+
+	if (!rx_ring->ps_ring_virtaddr) {
+		dev_err(&adapter->pdev->dev,
+			  "Cannot alloc memory for Packet Status Ring\n");
+		return -ENOMEM;
+	}
+	printk(KERN_INFO "Packet Status Ring %lx\n",
+	    (unsigned long) rx_ring->ps_ring_physaddr);
+
+	/*
+	 * NOTE : pci_alloc_consistent(), used above to alloc DMA regions,
+	 * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses
+	 * are ever returned, make sure the high part is retrieved here before
+	 * storing the adjusted address.
+	 */
+
+	/* Allocate an area of memory for writeback of status information */
+	rx_ring->rx_status_block = pci_alloc_consistent(adapter->pdev,
+					    sizeof(struct rx_status_block),
+					    &rx_ring->rx_status_bus);
+	if (!rx_ring->rx_status_block) {
+		dev_err(&adapter->pdev->dev,
+			  "Cannot alloc memory for Status Block\n");
+		return -ENOMEM;
+	}
+	rx_ring->num_rfd = NIC_DEFAULT_NUM_RFD;
+	printk(KERN_INFO "PRS %lx\n", (unsigned long)rx_ring->rx_status_bus);
+
+	/* Recv
+	 * pci_pool_create initializes a lookaside list. After successful
+	 * creation, nonpaged fixed-size blocks can be allocated from and
+	 * freed to the lookaside list.
+	 * RFDs will be allocated from this pool.
+	 */
+	rx_ring->recv_lookaside = kmem_cache_create(adapter->netdev->name,
+						   sizeof(struct rfd),
+						   0,
+						   SLAB_CACHE_DMA |
+						   SLAB_HWCACHE_ALIGN,
+						   NULL);
+
+	adapter->flags |= fMP_ADAPTER_RECV_LOOKASIDE;
+
+	/* The RFDs are going to be put on lists later on, so initialize the
+	 * lists now.
+	 */
+	INIT_LIST_HEAD(&rx_ring->recv_list);
+	return 0;
+}
+
+/**
+ * et131x_rx_dma_memory_free - Free all memory allocated within this module.
+ * @adapter: pointer to our private adapter structure
+ */
+void et131x_rx_dma_memory_free(struct et131x_adapter *adapter)
+{
+	u32 index;
+	u32 bufsize;
+	u32 pktstat_ringsize;
+	struct rfd *rfd;
+	struct rx_ring *rx_ring;
+
+	/* Setup some convenience pointers */
+	rx_ring = &adapter->rx_ring;
+
+	/* Free RFDs and associated packet descriptors */
+	WARN_ON(rx_ring->num_ready_recv != rx_ring->num_rfd);
+
+	while (!list_empty(&rx_ring->recv_list)) {
+		rfd = (struct rfd *) list_entry(rx_ring->recv_list.next,
+				struct rfd, list_node);
+
+		list_del(&rfd->list_node);
+		rfd->skb = NULL;
+		kmem_cache_free(adapter->rx_ring.recv_lookaside, rfd);
+	}
+
+	/* Free Free Buffer Ring 1 */
+	if (rx_ring->fbr1_ring_virtaddr) {
+		/* First the packet memory */
+		for (index = 0; index <
+		     (rx_ring->fbr1_num_entries / FBR_CHUNKS); index++) {
+			if (rx_ring->fbr1_mem_virtaddrs[index]) {
+				u32 fbr1_align;
+
+				if (rx_ring->fbr1_buffsize > 4096)
+					fbr1_align = 4096;
+				else
+					fbr1_align = rx_ring->fbr1_buffsize;
+
+				bufsize =
+				    (rx_ring->fbr1_buffsize * FBR_CHUNKS) +
+				    fbr1_align - 1;
+
+				pci_free_consistent(adapter->pdev,
+					bufsize,
+					rx_ring->fbr1_mem_virtaddrs[index],
+					rx_ring->fbr1_mem_physaddrs[index]);
+
+				rx_ring->fbr1_mem_virtaddrs[index] = NULL;
+			}
+		}
+
+		/* Now the FIFO itself */
+		rx_ring->fbr1_ring_virtaddr = (void *)((u8 *)
+			rx_ring->fbr1_ring_virtaddr - rx_ring->fbr1_offset);
+
+		bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr1_num_entries)
+							    + 0xfff;
+
+		pci_free_consistent(adapter->pdev, bufsize,
+				    rx_ring->fbr1_ring_virtaddr,
+				    rx_ring->fbr1_ring_physaddr);
+
+		rx_ring->fbr1_ring_virtaddr = NULL;
+	}
+
+#ifdef USE_FBR0
+	/* Now the same for Free Buffer Ring 0 */
+	if (rx_ring->fbr0_ring_virtaddr) {
+		/* First the packet memory */
+		for (index = 0; index <
+		     (rx_ring->fbr0_num_entries / FBR_CHUNKS); index++) {
+			if (rx_ring->fbr0_mem_virtaddrs[index]) {
+				bufsize =
+				    (rx_ring->fbr0_buffsize *
+				     (FBR_CHUNKS + 1)) - 1;
+
+				pci_free_consistent(adapter->pdev,
+					bufsize,
+					rx_ring->fbr0_mem_virtaddrs[index],
+					rx_ring->fbr0_mem_physaddrs[index]);
+
+				rx_ring->fbr0_mem_virtaddrs[index] = NULL;
+			}
+		}
+
+		/* Now the FIFO itself */
+		rx_ring->fbr0_ring_virtaddr = (void *)((u8 *)
+			rx_ring->fbr0_ring_virtaddr - rx_ring->fbr0_offset);
+
+		bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr0_num_entries)
+							    + 0xfff;
+
+		pci_free_consistent(adapter->pdev,
+				    bufsize,
+				    rx_ring->fbr0_ring_virtaddr,
+				    rx_ring->fbr0_ring_physaddr);
+
+		rx_ring->fbr0_ring_virtaddr = NULL;
+	}
+#endif
+
+	/* Free Packet Status Ring */
+	if (rx_ring->ps_ring_virtaddr) {
+		pktstat_ringsize =
+		    sizeof(struct pkt_stat_desc) *
+		    adapter->rx_ring.psr_num_entries;
+
+		pci_free_consistent(adapter->pdev, pktstat_ringsize,
+				    rx_ring->ps_ring_virtaddr,
+				    rx_ring->ps_ring_physaddr);
+
+		rx_ring->ps_ring_virtaddr = NULL;
+	}
+
+	/* Free area of memory for the writeback of status information */
+	if (rx_ring->rx_status_block) {
+		pci_free_consistent(adapter->pdev,
+			sizeof(struct rx_status_block),
+			rx_ring->rx_status_block, rx_ring->rx_status_bus);
+		rx_ring->rx_status_block = NULL;
+	}
+
+	/* Free receive buffer pool */
+
+	/* Free receive packet pool */
+
+	/* Destroy the lookaside (RFD) pool */
+	if (adapter->flags & fMP_ADAPTER_RECV_LOOKASIDE) {
+		kmem_cache_destroy(rx_ring->recv_lookaside);
+		adapter->flags &= ~fMP_ADAPTER_RECV_LOOKASIDE;
+	}
+
+	/* Free the FBR Lookup Table */
+#ifdef USE_FBR0
+	kfree(rx_ring->fbr[0]);
+#endif
+
+	kfree(rx_ring->fbr[1]);
+
+	/* Reset Counters */
+	rx_ring->num_ready_recv = 0;
+}
+
+/**
+ * et131x_init_recv - Initialize receive data structures.
+ * @adapter: pointer to our private adapter structure
+ *
+ * Returns 0 on success and errno on failure (as defined in errno.h)
+ */
+int et131x_init_recv(struct et131x_adapter *adapter)
+{
+	int status = -ENOMEM;
+	struct rfd *rfd = NULL;
+	u32 rfdct;
+	u32 numrfd = 0;
+	struct rx_ring *rx_ring;
+
+	/* Setup some convenience pointers */
+	rx_ring = &adapter->rx_ring;
+
+	/* Setup each RFD */
+	for (rfdct = 0; rfdct < rx_ring->num_rfd; rfdct++) {
+		rfd = kmem_cache_alloc(rx_ring->recv_lookaside,
+						     GFP_ATOMIC | GFP_DMA);
+
+		if (!rfd) {
+			dev_err(&adapter->pdev->dev,
+				  "Couldn't alloc RFD out of kmem_cache\n");
+			status = -ENOMEM;
+			continue;
+		}
+
+		rfd->skb = NULL;
+
+		/* Add this RFD to the recv_list */
+		list_add_tail(&rfd->list_node, &rx_ring->recv_list);
+
+		/* Increment both the available RFD's, and the total RFD's. */
+		rx_ring->num_ready_recv++;
+		numrfd++;
+	}
+
+	if (numrfd > NIC_MIN_NUM_RFD)
+		status = 0;
+
+	rx_ring->num_rfd = numrfd;
+
+	if (status != 0) {
+		kmem_cache_free(rx_ring->recv_lookaside, rfd);
+		dev_err(&adapter->pdev->dev,
+			  "Allocation problems in et131x_init_recv\n");
+	}
+	return status;
+}
+
+/**
+ * et131x_config_rx_dma_regs - Start of Rx_DMA init sequence
+ * @adapter: pointer to our adapter structure
+ */
+void et131x_config_rx_dma_regs(struct et131x_adapter *adapter)
+{
+	struct rxdma_regs __iomem *rx_dma = &adapter->regs->rxdma;
+	struct rx_ring *rx_local = &adapter->rx_ring;
+	struct fbr_desc *fbr_entry;
+	u32 entry;
+	u32 psr_num_des;
+	unsigned long flags;
+
+	/* Halt RXDMA to perform the reconfigure.  */
+	et131x_rx_dma_disable(adapter);
+
+	/* Load the completion writeback physical address
+	 *
+	 * NOTE : pci_alloc_consistent(), used above to alloc DMA regions,
+	 * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses
+	 * are ever returned, make sure the high part is retrieved here
+	 * before storing the adjusted address.
+	 */
+	writel((u32) ((u64)rx_local->rx_status_bus >> 32),
+	       &rx_dma->dma_wb_base_hi);
+	writel((u32) rx_local->rx_status_bus, &rx_dma->dma_wb_base_lo);
+
+	memset(rx_local->rx_status_block, 0, sizeof(struct rx_status_block));
+
+	/* Set the address and parameters of the packet status ring into the
+	 * 1310's registers
+	 */
+	writel((u32) ((u64)rx_local->ps_ring_physaddr >> 32),
+	       &rx_dma->psr_base_hi);
+	writel((u32) rx_local->ps_ring_physaddr, &rx_dma->psr_base_lo);
+	writel(rx_local->psr_num_entries - 1, &rx_dma->psr_num_des);
+	writel(0, &rx_dma->psr_full_offset);
+
+	psr_num_des = readl(&rx_dma->psr_num_des) & 0xFFF;
+	writel((psr_num_des * LO_MARK_PERCENT_FOR_PSR) / 100,
+	       &rx_dma->psr_min_des);
+
+	spin_lock_irqsave(&adapter->rcv_lock, flags);
+
+	/* These local variables track the PSR in the adapter structure */
+	rx_local->local_psr_full = 0;
+
+	/* Now's the best time to initialize FBR1 contents */
+	fbr_entry = (struct fbr_desc *) rx_local->fbr1_ring_virtaddr;
+	for (entry = 0; entry < rx_local->fbr1_num_entries; entry++) {
+		fbr_entry->addr_hi = rx_local->fbr[1]->bus_high[entry];
+		fbr_entry->addr_lo = rx_local->fbr[1]->bus_low[entry];
+		fbr_entry->word2 = entry;
+		fbr_entry++;
+	}
+
+	/* Set the address and parameters of Free buffer ring 1 (and 0 if
+	 * required) into the 1310's registers
+	 */
+	writel((u32) (rx_local->fbr1_real_physaddr >> 32),
+	       &rx_dma->fbr1_base_hi);
+	writel((u32) rx_local->fbr1_real_physaddr, &rx_dma->fbr1_base_lo);
+	writel(rx_local->fbr1_num_entries - 1, &rx_dma->fbr1_num_des);
+	writel(ET_DMA10_WRAP, &rx_dma->fbr1_full_offset);
+
+	/* This variable tracks the free buffer ring 1 full position, so it
+	 * has to match the above.
+	 */
+	rx_local->local_fbr1_full = ET_DMA10_WRAP;
+	writel(
+	    ((rx_local->fbr1_num_entries * LO_MARK_PERCENT_FOR_RX) / 100) - 1,
+	    &rx_dma->fbr1_min_des);
+
+#ifdef USE_FBR0
+	/* Now's the best time to initialize FBR0 contents */
+	fbr_entry = (struct fbr_desc *) rx_local->fbr0_ring_virtaddr;
+	for (entry = 0; entry < rx_local->fbr0_num_entries; entry++) {
+		fbr_entry->addr_hi = rx_local->fbr[0]->bus_high[entry];
+		fbr_entry->addr_lo = rx_local->fbr[0]->bus_low[entry];
+		fbr_entry->word2 = entry;
+		fbr_entry++;
+	}
+
+	writel((u32) (rx_local->fbr0_real_physaddr >> 32),
+	       &rx_dma->fbr0_base_hi);
+	writel((u32) rx_local->fbr0_real_physaddr, &rx_dma->fbr0_base_lo);
+	writel(rx_local->fbr0_num_entries - 1, &rx_dma->fbr0_num_des);
+	writel(ET_DMA10_WRAP, &rx_dma->fbr0_full_offset);
+
+	/* This variable tracks the free buffer ring 0 full position, so it
+	 * has to match the above.
+	 */
+	rx_local->local_fbr0_full = ET_DMA10_WRAP;
+	writel(
+	    ((rx_local->fbr0_num_entries * LO_MARK_PERCENT_FOR_RX) / 100) - 1,
+	    &rx_dma->fbr0_min_des);
+#endif
+
+	/* Program the number of packets we will receive before generating an
+	 * interrupt.
+	 * For version B silicon, this value gets updated once autoneg is
+	 *complete.
+	 */
+	writel(PARM_RX_NUM_BUFS_DEF, &rx_dma->num_pkt_done);
+
+	/* The "time_done" is not working correctly to coalesce interrupts
+	 * after a given time period, but rather is giving us an interrupt
+	 * regardless of whether we have received packets.
+	 * This value gets updated once autoneg is complete.
+	 */
+	writel(PARM_RX_TIME_INT_DEF, &rx_dma->max_pkt_time);
+
+	spin_unlock_irqrestore(&adapter->rcv_lock, flags);
+}
+
+/**
+ * et131x_set_rx_dma_timer - Set the heartbeat timer according to line rate.
+ * @adapter: pointer to our adapter structure
+ */
+void et131x_set_rx_dma_timer(struct et131x_adapter *adapter)
+{
+	struct phy_device *phydev = adapter->phydev;
+
+	if (!phydev)
+		return;
+
+	/* For version B silicon, we do not use the RxDMA timer for 10 and 100
+	 * Mbits/s line rates. We do not enable and RxDMA interrupt coalescing.
+	 */
+	if ((phydev->speed == SPEED_100) || (phydev->speed == SPEED_10)) {
+		writel(0, &adapter->regs->rxdma.max_pkt_time);
+		writel(1, &adapter->regs->rxdma.num_pkt_done);
+	}
+}
+
+/**
+ * NICReturnRFD - Recycle a RFD and put it back onto the receive list
+ * @adapter: pointer to our adapter
+ * @rfd: pointer to the RFD
+ */
+static void nic_return_rfd(struct et131x_adapter *adapter, struct rfd *rfd)
+{
+	struct rx_ring *rx_local = &adapter->rx_ring;
+	struct rxdma_regs __iomem *rx_dma = &adapter->regs->rxdma;
+	u16 buff_index = rfd->bufferindex;
+	u8 ring_index = rfd->ringindex;
+	unsigned long flags;
+
+	/* We don't use any of the OOB data besides status. Otherwise, we
+	 * need to clean up OOB data
+	 */
+	if (
+#ifdef USE_FBR0
+	    (ring_index == 0 && buff_index < rx_local->fbr0_num_entries) ||
+#endif
+	    (ring_index == 1 && buff_index < rx_local->fbr1_num_entries)) {
+		spin_lock_irqsave(&adapter->fbr_lock, flags);
+
+		if (ring_index == 1) {
+			struct fbr_desc *next =
+			    (struct fbr_desc *) (rx_local->fbr1_ring_virtaddr) +
+					 INDEX10(rx_local->local_fbr1_full);
+
+			/* Handle the Free Buffer Ring advancement here. Write
+			 * the PA / Buffer Index for the returned buffer into
+			 * the oldest (next to be freed)FBR entry
+			 */
+			next->addr_hi = rx_local->fbr[1]->bus_high[buff_index];
+			next->addr_lo = rx_local->fbr[1]->bus_low[buff_index];
+			next->word2 = buff_index;
+
+			writel(bump_free_buff_ring(&rx_local->local_fbr1_full,
+				rx_local->fbr1_num_entries - 1),
+				&rx_dma->fbr1_full_offset);
+		}
+#ifdef USE_FBR0
+		else {
+			struct fbr_desc *next = (struct fbr_desc *)
+				rx_local->fbr0_ring_virtaddr +
+					INDEX10(rx_local->local_fbr0_full);
+
+			/* Handle the Free Buffer Ring advancement here. Write
+			 * the PA / Buffer Index for the returned buffer into
+			 * the oldest (next to be freed) FBR entry
+			 */
+			next->addr_hi = rx_local->fbr[0]->bus_high[buff_index];
+			next->addr_lo = rx_local->fbr[0]->bus_low[buff_index];
+			next->word2 = buff_index;
+
+			writel(bump_free_buff_ring(&rx_local->local_fbr0_full,
+					rx_local->fbr0_num_entries - 1),
+			       &rx_dma->fbr0_full_offset);
+		}
+#endif
+		spin_unlock_irqrestore(&adapter->fbr_lock, flags);
+	} else {
+		dev_err(&adapter->pdev->dev,
+			  "%s illegal Buffer Index returned\n", __func__);
+	}
+
+	/* The processing on this RFD is done, so put it back on the tail of
+	 * our list
+	 */
+	spin_lock_irqsave(&adapter->rcv_lock, flags);
+	list_add_tail(&rfd->list_node, &rx_local->recv_list);
+	rx_local->num_ready_recv++;
+	spin_unlock_irqrestore(&adapter->rcv_lock, flags);
+
+	WARN_ON(rx_local->num_ready_recv > rx_local->num_rfd);
+}
+
+/**
+ * et131x_rx_dma_disable - Stop of Rx_DMA on the ET1310
+ * @adapter: pointer to our adapter structure
+ */
+void et131x_rx_dma_disable(struct et131x_adapter *adapter)
+{
+	u32 csr;
+	/* Setup the receive dma configuration register */
+	writel(0x00002001, &adapter->regs->rxdma.csr);
+	csr = readl(&adapter->regs->rxdma.csr);
+	if ((csr & 0x00020000) == 0) {	/* Check halt status (bit 17) */
+		udelay(5);
+		csr = readl(&adapter->regs->rxdma.csr);
+		if ((csr & 0x00020000) == 0)
+			dev_err(&adapter->pdev->dev,
+			"RX Dma failed to enter halt state. CSR 0x%08x\n",
+				csr);
+	}
+}
+
+/**
+ * et131x_rx_dma_enable - re-start of Rx_DMA on the ET1310.
+ * @adapter: pointer to our adapter structure
+ */
+void et131x_rx_dma_enable(struct et131x_adapter *adapter)
+{
+	/* Setup the receive dma configuration register for normal operation */
+	u32 csr =  0x2000;	/* FBR1 enable */
+
+	if (adapter->rx_ring.fbr1_buffsize == 4096)
+		csr |= 0x0800;
+	else if (adapter->rx_ring.fbr1_buffsize == 8192)
+		csr |= 0x1000;
+	else if (adapter->rx_ring.fbr1_buffsize == 16384)
+		csr |= 0x1800;
+#ifdef USE_FBR0
+	csr |= 0x0400;		/* FBR0 enable */
+	if (adapter->rx_ring.fbr0_buffsize == 256)
+		csr |= 0x0100;
+	else if (adapter->rx_ring.fbr0_buffsize == 512)
+		csr |= 0x0200;
+	else if (adapter->rx_ring.fbr0_buffsize == 1024)
+		csr |= 0x0300;
+#endif
+	writel(csr, &adapter->regs->rxdma.csr);
+
+	csr = readl(&adapter->regs->rxdma.csr);
+	if ((csr & 0x00020000) != 0) {
+		udelay(5);
+		csr = readl(&adapter->regs->rxdma.csr);
+		if ((csr & 0x00020000) != 0) {
+			dev_err(&adapter->pdev->dev,
+			    "RX Dma failed to exit halt state.  CSR 0x%08x\n",
+				csr);
+		}
+	}
+}
+
+/**
+ * nic_rx_pkts - Checks the hardware for available packets
+ * @adapter: pointer to our adapter
+ *
+ * Returns rfd, a pointer to our MPRFD.
+ *
+ * Checks the hardware for available packets, using completion ring
+ * If packets are available, it gets an RFD from the recv_list, attaches
+ * the packet to it, puts the RFD in the RecvPendList, and also returns
+ * the pointer to the RFD.
+ */
+static struct rfd *nic_rx_pkts(struct et131x_adapter *adapter)
+{
+	struct rx_ring *rx_local = &adapter->rx_ring;
+	struct rx_status_block *status;
+	struct pkt_stat_desc *psr;
+	struct rfd *rfd;
+	u32 i;
+	u8 *buf;
+	unsigned long flags;
+	struct list_head *element;
+	u8 ring_index;
+	u16 buff_index;
+	u32 len;
+	u32 word0;
+	u32 word1;
+
+	/* RX Status block is written by the DMA engine prior to every
+	 * interrupt. It contains the next to be used entry in the Packet
+	 * Status Ring, and also the two Free Buffer rings.
+	 */
+	status = rx_local->rx_status_block;
+	word1 = status->word1 >> 16;	/* Get the useful bits */
+
+	/* Check the PSR and wrap bits do not match */
+	if ((word1 & 0x1FFF) == (rx_local->local_psr_full & 0x1FFF))
+		/* Looks like this ring is not updated yet */
+		return NULL;
+
+	/* The packet status ring indicates that data is available. */
+	psr = (struct pkt_stat_desc *) (rx_local->ps_ring_virtaddr) +
+			(rx_local->local_psr_full & 0xFFF);
+
+	/* Grab any information that is required once the PSR is
+	 * advanced, since we can no longer rely on the memory being
+	 * accurate
+	 */
+	len = psr->word1 & 0xFFFF;
+	ring_index = (psr->word1 >> 26) & 0x03;
+	buff_index = (psr->word1 >> 16) & 0x3FF;
+	word0 = psr->word0;
+
+	/* Indicate that we have used this PSR entry. */
+	/* FIXME wrap 12 */
+	add_12bit(&rx_local->local_psr_full, 1);
+	if (
+	  (rx_local->local_psr_full & 0xFFF) > rx_local->psr_num_entries - 1) {
+		/* Clear psr full and toggle the wrap bit */
+		rx_local->local_psr_full &=  ~0xFFF;
+		rx_local->local_psr_full ^= 0x1000;
+	}
+
+	writel(rx_local->local_psr_full,
+	       &adapter->regs->rxdma.psr_full_offset);
+
+#ifndef USE_FBR0
+	if (ring_index != 1)
+		return NULL;
+#endif
+
+#ifdef USE_FBR0
+	if (ring_index > 1 ||
+		(ring_index == 0 &&
+		buff_index > rx_local->fbr0_num_entries - 1) ||
+		(ring_index == 1 &&
+		buff_index > rx_local->fbr1_num_entries - 1))
+#else
+	if (ring_index != 1 || buff_index > rx_local->fbr1_num_entries - 1)
+#endif
+	{
+		/* Illegal buffer or ring index cannot be used by S/W*/
+		dev_err(&adapter->pdev->dev,
+			  "NICRxPkts PSR Entry %d indicates "
+			  "length of %d and/or bad bi(%d)\n",
+			  rx_local->local_psr_full & 0xFFF,
+			  len, buff_index);
+		return NULL;
+	}
+
+	/* Get and fill the RFD. */
+	spin_lock_irqsave(&adapter->rcv_lock, flags);
+
+	rfd = NULL;
+	element = rx_local->recv_list.next;
+	rfd = (struct rfd *) list_entry(element, struct rfd, list_node);
+
+	if (rfd == NULL) {
+		spin_unlock_irqrestore(&adapter->rcv_lock, flags);
+		return NULL;
+	}
+
+	list_del(&rfd->list_node);
+	rx_local->num_ready_recv--;
+
+	spin_unlock_irqrestore(&adapter->rcv_lock, flags);
+
+	rfd->bufferindex = buff_index;
+	rfd->ringindex = ring_index;
+
+	/* In V1 silicon, there is a bug which screws up filtering of
+	 * runt packets.  Therefore runt packet filtering is disabled
+	 * in the MAC and the packets are dropped here.  They are
+	 * also counted here.
+	 */
+	if (len < (NIC_MIN_PACKET_SIZE + 4)) {
+		adapter->stats.rx_other_errs++;
+		len = 0;
+	}
+
+	if (len) {
+		/* Determine if this is a multicast packet coming in */
+		if ((word0 & ALCATEL_MULTICAST_PKT) &&
+		    !(word0 & ALCATEL_BROADCAST_PKT)) {
+			/* Promiscuous mode and Multicast mode are
+			 * not mutually exclusive as was first
+			 * thought.  I guess Promiscuous is just
+			 * considered a super-set of the other
+			 * filters. Generally filter is 0x2b when in
+			 * promiscuous mode.
+			 */
+			if ((adapter->packet_filter &
+					ET131X_PACKET_TYPE_MULTICAST)
+			    && !(adapter->packet_filter &
+					ET131X_PACKET_TYPE_PROMISCUOUS)
+			    && !(adapter->packet_filter &
+					ET131X_PACKET_TYPE_ALL_MULTICAST)) {
+				buf = rx_local->fbr[ring_index]->
+						virt[buff_index];
+
+				/* Loop through our list to see if the
+				 * destination address of this packet
+				 * matches one in our list.
+				 */
+				for (i = 0; i < adapter->multicast_addr_count;
+				     i++) {
+					if (buf[0] ==
+						adapter->multicast_list[i][0]
+					    && buf[1] ==
+						adapter->multicast_list[i][1]
+					    && buf[2] ==
+						adapter->multicast_list[i][2]
+					    && buf[3] ==
+						adapter->multicast_list[i][3]
+					    && buf[4] ==
+						adapter->multicast_list[i][4]
+					    && buf[5] ==
+						adapter->multicast_list[i][5]) {
+						break;
+					}
+				}
+
+				/* If our index is equal to the number
+				 * of Multicast address we have, then
+				 * this means we did not find this
+				 * packet's matching address in our
+				 * list.  Set the len to zero,
+				 * so we free our RFD when we return
+				 * from this function.
+				 */
+				if (i == adapter->multicast_addr_count)
+					len = 0;
+			}
+
+			if (len > 0)
+				adapter->stats.multicast_pkts_rcvd++;
+		} else if (word0 & ALCATEL_BROADCAST_PKT)
+			adapter->stats.broadcast_pkts_rcvd++;
+		else
+			/* Not sure what this counter measures in
+			 * promiscuous mode. Perhaps we should check
+			 * the MAC address to see if it is directed
+			 * to us in promiscuous mode.
+			 */
+			adapter->stats.unicast_pkts_rcvd++;
+	}
+
+	if (len > 0) {
+		struct sk_buff *skb = NULL;
+
+		/*rfd->len = len - 4; */
+		rfd->len = len;
+
+		skb = dev_alloc_skb(rfd->len + 2);
+		if (!skb) {
+			dev_err(&adapter->pdev->dev,
+				  "Couldn't alloc an SKB for Rx\n");
+			return NULL;
+		}
+
+		adapter->net_stats.rx_bytes += rfd->len;
+
+		memcpy(skb_put(skb, rfd->len),
+		       rx_local->fbr[ring_index]->virt[buff_index],
+		       rfd->len);
+
+		skb->dev = adapter->netdev;
+		skb->protocol = eth_type_trans(skb, adapter->netdev);
+		skb->ip_summed = CHECKSUM_NONE;
+
+		netif_rx(skb);
+	} else {
+		rfd->len = 0;
+	}
+
+	nic_return_rfd(adapter, rfd);
+	return rfd;
+}
+
+/**
+ * et131x_reset_recv - Reset the receive list
+ * @adapter: pointer to our adapter
+ *
+ * Assumption, Rcv spinlock has been acquired.
+ */
+void et131x_reset_recv(struct et131x_adapter *adapter)
+{
+	WARN_ON(list_empty(&adapter->rx_ring.recv_list));
+}
+
+/**
+ * et131x_handle_recv_interrupt - Interrupt handler for receive processing
+ * @adapter: pointer to our adapter
+ *
+ * Assumption, Rcv spinlock has been acquired.
+ */
+void et131x_handle_recv_interrupt(struct et131x_adapter *adapter)
+{
+	struct rfd *rfd = NULL;
+	u32 count = 0;
+	bool done = true;
+
+	/* Process up to available RFD's */
+	while (count < NUM_PACKETS_HANDLED) {
+		if (list_empty(&adapter->rx_ring.recv_list)) {
+			WARN_ON(adapter->rx_ring.num_ready_recv != 0);
+			done = false;
+			break;
+		}
+
+		rfd = nic_rx_pkts(adapter);
+
+		if (rfd == NULL)
+			break;
+
+		/* Do not receive any packets until a filter has been set.
+		 * Do not receive any packets until we have link.
+		 * If length is zero, return the RFD in order to advance the
+		 * Free buffer ring.
+		 */
+		if (!adapter->packet_filter ||
+		    !netif_carrier_ok(adapter->netdev) ||
+		    rfd->len == 0)
+			continue;
+
+		/* Increment the number of packets we received */
+		adapter->net_stats.rx_packets++;
+
+		/* Set the status on the packet, either resources or success */
+		if (adapter->rx_ring.num_ready_recv < RFD_LOW_WATER_MARK) {
+			dev_warn(&adapter->pdev->dev,
+				    "RFD's are running out\n");
+		}
+		count++;
+	}
+
+	if (count == NUM_PACKETS_HANDLED || !done) {
+		adapter->rx_ring.unfinished_receives = true;
+		writel(PARM_TX_TIME_INT_DEF * NANO_IN_A_MICRO,
+		       &adapter->regs->global.watchdog_timer);
+	} else
+		/* Watchdog timer will disable itself if appropriate. */
+		adapter->rx_ring.unfinished_receives = false;
+}
+
+/* TX functions */
+
+/**
+ * et131x_tx_dma_memory_alloc
+ * @adapter: pointer to our private adapter structure
+ *
+ * Returns 0 on success and errno on failure (as defined in errno.h).
+ *
+ * Allocates memory that will be visible both to the device and to the CPU.
+ * The OS will pass us packets, pointers to which we will insert in the Tx
+ * Descriptor queue. The device will read this queue to find the packets in
+ * memory. The device will update the "status" in memory each time it xmits a
+ * packet.
+ */
+int et131x_tx_dma_memory_alloc(struct et131x_adapter *adapter)
+{
+	int desc_size = 0;
+	struct tx_ring *tx_ring = &adapter->tx_ring;
+
+	/* Allocate memory for the TCB's (Transmit Control Block) */
+	adapter->tx_ring.tcb_ring =
+		kcalloc(NUM_TCB, sizeof(struct tcb), GFP_ATOMIC | GFP_DMA);
+	if (!adapter->tx_ring.tcb_ring) {
+		dev_err(&adapter->pdev->dev, "Cannot alloc memory for TCBs\n");
+		return -ENOMEM;
+	}
+
+	/* Allocate enough memory for the Tx descriptor ring, and allocate
+	 * some extra so that the ring can be aligned on a 4k boundary.
+	 */
+	desc_size = (sizeof(struct tx_desc) * NUM_DESC_PER_RING_TX) + 4096 - 1;
+	tx_ring->tx_desc_ring =
+	    (struct tx_desc *) pci_alloc_consistent(adapter->pdev, desc_size,
+						    &tx_ring->tx_desc_ring_pa);
+	if (!adapter->tx_ring.tx_desc_ring) {
+		dev_err(&adapter->pdev->dev,
+					"Cannot alloc memory for Tx Ring\n");
+		return -ENOMEM;
+	}
+
+	/* Save physical address
+	 *
+	 * NOTE: pci_alloc_consistent(), used above to alloc DMA regions,
+	 * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses
+	 * are ever returned, make sure the high part is retrieved here before
+	 * storing the adjusted address.
+	 */
+	/* Allocate memory for the Tx status block */
+	tx_ring->tx_status = pci_alloc_consistent(adapter->pdev,
+						    sizeof(u32),
+						    &tx_ring->tx_status_pa);
+	if (!adapter->tx_ring.tx_status_pa) {
+		dev_err(&adapter->pdev->dev,
+				  "Cannot alloc memory for Tx status block\n");
+		return -ENOMEM;
+	}
+	return 0;
+}
+
+/**
+ * et131x_tx_dma_memory_free - Free all memory allocated within this module
+ * @adapter: pointer to our private adapter structure
+ *
+ * Returns 0 on success and errno on failure (as defined in errno.h).
+ */
+void et131x_tx_dma_memory_free(struct et131x_adapter *adapter)
+{
+	int desc_size = 0;
+
+	if (adapter->tx_ring.tx_desc_ring) {
+		/* Free memory relating to Tx rings here */
+		desc_size = (sizeof(struct tx_desc) * NUM_DESC_PER_RING_TX)
+								+ 4096 - 1;
+		pci_free_consistent(adapter->pdev,
+				    desc_size,
+				    adapter->tx_ring.tx_desc_ring,
+				    adapter->tx_ring.tx_desc_ring_pa);
+		adapter->tx_ring.tx_desc_ring = NULL;
+	}
+
+	/* Free memory for the Tx status block */
+	if (adapter->tx_ring.tx_status) {
+		pci_free_consistent(adapter->pdev,
+				    sizeof(u32),
+				    adapter->tx_ring.tx_status,
+				    adapter->tx_ring.tx_status_pa);
+
+		adapter->tx_ring.tx_status = NULL;
+	}
+	/* Free the memory for the tcb structures */
+	kfree(adapter->tx_ring.tcb_ring);
+}
+
+/**
+ * et131x_config_tx_dma_regs - Set up the tx dma section of the JAGCore.
+ * @adapter: pointer to our private adapter structure
+ *
+ * Configure the transmit engine with the ring buffers we have created
+ * and prepare it for use.
+ */
+void et131x_config_tx_dma_regs(struct et131x_adapter *adapter)
+{
+	struct txdma_regs __iomem *txdma = &adapter->regs->txdma;
+
+	/* Load the hardware with the start of the transmit descriptor ring. */
+	writel((u32) ((u64)adapter->tx_ring.tx_desc_ring_pa >> 32),
+	       &txdma->pr_base_hi);
+	writel((u32) adapter->tx_ring.tx_desc_ring_pa,
+	       &txdma->pr_base_lo);
+
+	/* Initialise the transmit DMA engine */
+	writel(NUM_DESC_PER_RING_TX - 1, &txdma->pr_num_des);
+
+	/* Load the completion writeback physical address */
+	writel((u32)((u64)adapter->tx_ring.tx_status_pa >> 32),
+						&txdma->dma_wb_base_hi);
+	writel((u32)adapter->tx_ring.tx_status_pa, &txdma->dma_wb_base_lo);
+
+	*adapter->tx_ring.tx_status = 0;
+
+	writel(0, &txdma->service_request);
+	adapter->tx_ring.send_idx = 0;
+}
+
+/**
+ * et131x_tx_dma_disable - Stop of Tx_DMA on the ET1310
+ * @adapter: pointer to our adapter structure
+ */
+void et131x_tx_dma_disable(struct et131x_adapter *adapter)
+{
+	/* Setup the tramsmit dma configuration register */
+	writel(ET_TXDMA_CSR_HALT|ET_TXDMA_SNGL_EPKT,
+					&adapter->regs->txdma.csr);
+}
+
+/**
+ * et131x_tx_dma_enable - re-start of Tx_DMA on the ET1310.
+ * @adapter: pointer to our adapter structure
+ *
+ * Mainly used after a return to the D0 (full-power) state from a lower state.
+ */
+void et131x_tx_dma_enable(struct et131x_adapter *adapter)
+{
+	/* Setup the transmit dma configuration register for normal
+	 * operation
+	 */
+	writel(ET_TXDMA_SNGL_EPKT|(PARM_DMA_CACHE_DEF << ET_TXDMA_CACHE_SHIFT),
+					&adapter->regs->txdma.csr);
+}
+
+/**
+ * et131x_init_send - Initialize send data structures
+ * @adapter: pointer to our private adapter structure
+ */
+void et131x_init_send(struct et131x_adapter *adapter)
+{
+	struct tcb *tcb;
+	u32 ct;
+	struct tx_ring *tx_ring;
+
+	/* Setup some convenience pointers */
+	tx_ring = &adapter->tx_ring;
+	tcb = adapter->tx_ring.tcb_ring;
+
+	tx_ring->tcb_qhead = tcb;
+
+	memset(tcb, 0, sizeof(struct tcb) * NUM_TCB);
+
+	/* Go through and set up each TCB */
+	for (ct = 0; ct++ < NUM_TCB; tcb++)
+		/* Set the link pointer in HW TCB to the next TCB in the
+		 * chain
+		 */
+		tcb->next = tcb + 1;
+
+	/* Set the  tail pointer */
+	tcb--;
+	tx_ring->tcb_qtail = tcb;
+	tcb->next = NULL;
+	/* Curr send queue should now be empty */
+	tx_ring->send_head = NULL;
+	tx_ring->send_tail = NULL;
+}
+
+/**
+ * nic_send_packet - NIC specific send handler for version B silicon.
+ * @adapter: pointer to our adapter
+ * @tcb: pointer to struct tcb
+ *
+ * Returns 0 or errno.
+ */
+static int nic_send_packet(struct et131x_adapter *adapter, struct tcb *tcb)
+{
+	u32 i;
+	struct tx_desc desc[24];	/* 24 x 16 byte */
+	u32 frag = 0;
+	u32 thiscopy, remainder;
+	struct sk_buff *skb = tcb->skb;
+	u32 nr_frags = skb_shinfo(skb)->nr_frags + 1;
+	struct skb_frag_struct *frags = &skb_shinfo(skb)->frags[0];
+	unsigned long flags;
+	struct phy_device *phydev = adapter->phydev;
+
+	/* Part of the optimizations of this send routine restrict us to
+	 * sending 24 fragments at a pass.  In practice we should never see
+	 * more than 5 fragments.
+	 *
+	 * NOTE: The older version of this function (below) can handle any
+	 * number of fragments. If needed, we can call this function,
+	 * although it is less efficient.
+	 */
+	if (nr_frags > 23)
+		return -EIO;
+
+	memset(desc, 0, sizeof(struct tx_desc) * (nr_frags + 1));
+
+	for (i = 0; i < nr_frags; i++) {
+		/* If there is something in this element, lets get a
+		 * descriptor from the ring and get the necessary data
+		 */
+		if (i == 0) {
+			/* If the fragments are smaller than a standard MTU,
+			 * then map them to a single descriptor in the Tx
+			 * Desc ring. However, if they're larger, as is
+			 * possible with support for jumbo packets, then
+			 * split them each across 2 descriptors.
+			 *
+			 * This will work until we determine why the hardware
+			 * doesn't seem to like large fragments.
+			 */
+			if ((skb->len - skb->data_len) <= 1514) {
+				desc[frag].addr_hi = 0;
+				/* Low 16bits are length, high is vlan and
+				   unused currently so zero */
+				desc[frag].len_vlan =
+					skb->len - skb->data_len;
+
+				/* NOTE: Here, the dma_addr_t returned from
+				 * pci_map_single() is implicitly cast as a
+				 * u32. Although dma_addr_t can be
+				 * 64-bit, the address returned by
+				 * pci_map_single() is always 32-bit
+				 * addressable (as defined by the pci/dma
+				 * subsystem)
+				 */
+				desc[frag++].addr_lo =
+				    pci_map_single(adapter->pdev,
+						   skb->data,
+						   skb->len -
+						   skb->data_len,
+						   PCI_DMA_TODEVICE);
+			} else {
+				desc[frag].addr_hi = 0;
+				desc[frag].len_vlan =
+				    (skb->len - skb->data_len) / 2;
+
+				/* NOTE: Here, the dma_addr_t returned from
+				 * pci_map_single() is implicitly cast as a
+				 * u32. Although dma_addr_t can be
+				 * 64-bit, the address returned by
+				 * pci_map_single() is always 32-bit
+				 * addressable (as defined by the pci/dma
+				 * subsystem)
+				 */
+				desc[frag++].addr_lo =
+				    pci_map_single(adapter->pdev,
+						   skb->data,
+						   ((skb->len -
+						     skb->data_len) / 2),
+						   PCI_DMA_TODEVICE);
+				desc[frag].addr_hi = 0;
+
+				desc[frag].len_vlan =
+				    (skb->len - skb->data_len) / 2;
+
+				/* NOTE: Here, the dma_addr_t returned from
+				 * pci_map_single() is implicitly cast as a
+				 * u32. Although dma_addr_t can be
+				 * 64-bit, the address returned by
+				 * pci_map_single() is always 32-bit
+				 * addressable (as defined by the pci/dma
+				 * subsystem)
+				 */
+				desc[frag++].addr_lo =
+				    pci_map_single(adapter->pdev,
+						   skb->data +
+						   ((skb->len -
+						     skb->data_len) / 2),
+						   ((skb->len -
+						     skb->data_len) / 2),
+						   PCI_DMA_TODEVICE);
+			}
+		} else {
+			desc[frag].addr_hi = 0;
+			desc[frag].len_vlan =
+					frags[i - 1].size;
+
+			/* NOTE: Here, the dma_addr_t returned from
+			 * pci_map_page() is implicitly cast as a u32.
+			 * Although dma_addr_t can be 64-bit, the address
+			 * returned by pci_map_page() is always 32-bit
+			 * addressable (as defined by the pci/dma subsystem)
+			 */
+			desc[frag++].addr_lo =
+			    pci_map_page(adapter->pdev,
+					 frags[i - 1].page,
+					 frags[i - 1].page_offset,
+					 frags[i - 1].size,
+					 PCI_DMA_TODEVICE);
+		}
+	}
+
+	if (frag == 0)
+		return -EIO;
+
+	if (phydev && phydev->speed == SPEED_1000) {
+		if (++adapter->tx_ring.since_irq == PARM_TX_NUM_BUFS_DEF) {
+			/* Last element & Interrupt flag */
+			desc[frag - 1].flags = 0x5;
+			adapter->tx_ring.since_irq = 0;
+		} else { /* Last element */
+			desc[frag - 1].flags = 0x1;
+		}
+	} else
+		desc[frag - 1].flags = 0x5;
+
+	desc[0].flags |= 2;	/* First element flag */
+
+	tcb->index_start = adapter->tx_ring.send_idx;
+	tcb->stale = 0;
+
+	spin_lock_irqsave(&adapter->send_hw_lock, flags);
+
+	thiscopy = NUM_DESC_PER_RING_TX -
+				INDEX10(adapter->tx_ring.send_idx);
+
+	if (thiscopy >= frag) {
+		remainder = 0;
+		thiscopy = frag;
+	} else {
+		remainder = frag - thiscopy;
+	}
+
+	memcpy(adapter->tx_ring.tx_desc_ring +
+	       INDEX10(adapter->tx_ring.send_idx), desc,
+	       sizeof(struct tx_desc) * thiscopy);
+
+	add_10bit(&adapter->tx_ring.send_idx, thiscopy);
+
+	if (INDEX10(adapter->tx_ring.send_idx) == 0 ||
+		  INDEX10(adapter->tx_ring.send_idx) == NUM_DESC_PER_RING_TX) {
+		adapter->tx_ring.send_idx &= ~ET_DMA10_MASK;
+		adapter->tx_ring.send_idx ^= ET_DMA10_WRAP;
+	}
+
+	if (remainder) {
+		memcpy(adapter->tx_ring.tx_desc_ring,
+		       desc + thiscopy,
+		       sizeof(struct tx_desc) * remainder);
+
+		add_10bit(&adapter->tx_ring.send_idx, remainder);
+	}
+
+	if (INDEX10(adapter->tx_ring.send_idx) == 0) {
+		if (adapter->tx_ring.send_idx)
+			tcb->index = NUM_DESC_PER_RING_TX - 1;
+		else
+			tcb->index = ET_DMA10_WRAP|(NUM_DESC_PER_RING_TX - 1);
+	} else
+		tcb->index = adapter->tx_ring.send_idx - 1;
+
+	spin_lock(&adapter->tcb_send_qlock);
+
+	if (adapter->tx_ring.send_tail)
+		adapter->tx_ring.send_tail->next = tcb;
+	else
+		adapter->tx_ring.send_head = tcb;
+
+	adapter->tx_ring.send_tail = tcb;
+
+	WARN_ON(tcb->next != NULL);
+
+	adapter->tx_ring.used++;
+
+	spin_unlock(&adapter->tcb_send_qlock);
+
+	/* Write the new write pointer back to the device. */
+	writel(adapter->tx_ring.send_idx,
+	       &adapter->regs->txdma.service_request);
+
+	/* For Gig only, we use Tx Interrupt coalescing.  Enable the software
+	 * timer to wake us up if this packet isn't followed by N more.
+	 */
+	if (phydev && phydev->speed == SPEED_1000) {
+		writel(PARM_TX_TIME_INT_DEF * NANO_IN_A_MICRO,
+		       &adapter->regs->global.watchdog_timer);
+	}
+	spin_unlock_irqrestore(&adapter->send_hw_lock, flags);
+
+	return 0;
+}
+
+/**
+ * send_packet - Do the work to send a packet
+ * @skb: the packet(s) to send
+ * @adapter: a pointer to the device's private adapter structure
+ *
+ * Return 0 in almost all cases; non-zero value in extreme hard failure only.
+ *
+ * Assumption: Send spinlock has been acquired
+ */
+static int send_packet(struct sk_buff *skb, struct et131x_adapter *adapter)
+{
+	int status;
+	struct tcb *tcb = NULL;
+	u16 *shbufva;
+	unsigned long flags;
+
+	/* All packets must have at least a MAC address and a protocol type */
+	if (skb->len < ETH_HLEN)
+		return -EIO;
+
+	/* Get a TCB for this packet */
+	spin_lock_irqsave(&adapter->tcb_ready_qlock, flags);
+
+	tcb = adapter->tx_ring.tcb_qhead;
+
+	if (tcb == NULL) {
+		spin_unlock_irqrestore(&adapter->tcb_ready_qlock, flags);
+		return -ENOMEM;
+	}
+
+	adapter->tx_ring.tcb_qhead = tcb->next;
+
+	if (adapter->tx_ring.tcb_qhead == NULL)
+		adapter->tx_ring.tcb_qtail = NULL;
+
+	spin_unlock_irqrestore(&adapter->tcb_ready_qlock, flags);
+
+	tcb->skb = skb;
+
+	if (skb->data != NULL && skb->len - skb->data_len >= 6) {
+		shbufva = (u16 *) skb->data;
+
+		if ((shbufva[0] == 0xffff) &&
+		    (shbufva[1] == 0xffff) && (shbufva[2] == 0xffff)) {
+			tcb->flags |= fMP_DEST_BROAD;
+		} else if ((shbufva[0] & 0x3) == 0x0001) {
+			tcb->flags |=  fMP_DEST_MULTI;
+		}
+	}
+
+	tcb->next = NULL;
+
+	/* Call the NIC specific send handler. */
+	status = nic_send_packet(adapter, tcb);
+
+	if (status != 0) {
+		spin_lock_irqsave(&adapter->tcb_ready_qlock, flags);
+
+		if (adapter->tx_ring.tcb_qtail)
+			adapter->tx_ring.tcb_qtail->next = tcb;
+		else
+			/* Apparently ready Q is empty. */
+			adapter->tx_ring.tcb_qhead = tcb;
+
+		adapter->tx_ring.tcb_qtail = tcb;
+		spin_unlock_irqrestore(&adapter->tcb_ready_qlock, flags);
+		return status;
+	}
+	WARN_ON(adapter->tx_ring.used > NUM_TCB);
+	return 0;
+}
+
+/**
+ * et131x_send_packets - This function is called by the OS to send packets
+ * @skb: the packet(s) to send
+ * @netdev:device on which to TX the above packet(s)
+ *
+ * Return 0 in almost all cases; non-zero value in extreme hard failure only
+ */
+int et131x_send_packets(struct sk_buff *skb, struct net_device *netdev)
+{
+	int status = 0;
+	struct et131x_adapter *adapter = NULL;
+
+	adapter = netdev_priv(netdev);
+
+	/* Send these packets
+	 *
+	 * NOTE: The Linux Tx entry point is only given one packet at a time
+	 * to Tx, so the PacketCount and it's array used makes no sense here
+	 */
+
+	/* TCB is not available */
+	if (adapter->tx_ring.used >= NUM_TCB) {
+		/* NOTE: If there's an error on send, no need to queue the
+		 * packet under Linux; if we just send an error up to the
+		 * netif layer, it will resend the skb to us.
+		 */
+		status = -ENOMEM;
+	} else {
+		/* We need to see if the link is up; if it's not, make the
+		 * netif layer think we're good and drop the packet
+		 */
+		if ((adapter->flags & fMP_ADAPTER_FAIL_SEND_MASK) ||
+					!netif_carrier_ok(netdev)) {
+			dev_kfree_skb_any(skb);
+			skb = NULL;
+
+			adapter->net_stats.tx_dropped++;
+		} else {
+			status = send_packet(skb, adapter);
+			if (status != 0 && status != -ENOMEM) {
+				/* On any other error, make netif think we're
+				 * OK and drop the packet
+				 */
+				dev_kfree_skb_any(skb);
+				skb = NULL;
+				adapter->net_stats.tx_dropped++;
+			}
+		}
+	}
+	return status;
+}
+
+/**
+ * free_send_packet - Recycle a struct tcb
+ * @adapter: pointer to our adapter
+ * @tcb: pointer to struct tcb
+ *
+ * Complete the packet if necessary
+ * Assumption - Send spinlock has been acquired
+ */
+static inline void free_send_packet(struct et131x_adapter *adapter,
+						struct tcb *tcb)
+{
+	unsigned long flags;
+	struct tx_desc *desc = NULL;
+	struct net_device_stats *stats = &adapter->net_stats;
+
+	if (tcb->flags & fMP_DEST_BROAD)
+		atomic_inc(&adapter->stats.broadcast_pkts_xmtd);
+	else if (tcb->flags & fMP_DEST_MULTI)
+		atomic_inc(&adapter->stats.multicast_pkts_xmtd);
+	else
+		atomic_inc(&adapter->stats.unicast_pkts_xmtd);
+
+	if (tcb->skb) {
+		stats->tx_bytes += tcb->skb->len;
+
+		/* Iterate through the TX descriptors on the ring
+		 * corresponding to this packet and umap the fragments
+		 * they point to
+		 */
+		do {
+			desc = (struct tx_desc *)
+				    (adapter->tx_ring.tx_desc_ring +
+						INDEX10(tcb->index_start));
+
+			pci_unmap_single(adapter->pdev,
+					 desc->addr_lo,
+					 desc->len_vlan, PCI_DMA_TODEVICE);
+
+			add_10bit(&tcb->index_start, 1);
+			if (INDEX10(tcb->index_start) >=
+							NUM_DESC_PER_RING_TX) {
+				tcb->index_start &= ~ET_DMA10_MASK;
+				tcb->index_start ^= ET_DMA10_WRAP;
+			}
+		} while (desc != (adapter->tx_ring.tx_desc_ring +
+				INDEX10(tcb->index)));
+
+		dev_kfree_skb_any(tcb->skb);
+	}
+
+	memset(tcb, 0, sizeof(struct tcb));
+
+	/* Add the TCB to the Ready Q */
+	spin_lock_irqsave(&adapter->tcb_ready_qlock, flags);
+
+	adapter->net_stats.tx_packets++;
+
+	if (adapter->tx_ring.tcb_qtail)
+		adapter->tx_ring.tcb_qtail->next = tcb;
+	else
+		/* Apparently ready Q is empty. */
+		adapter->tx_ring.tcb_qhead = tcb;
+
+	adapter->tx_ring.tcb_qtail = tcb;
+
+	spin_unlock_irqrestore(&adapter->tcb_ready_qlock, flags);
+	WARN_ON(adapter->tx_ring.used < 0);
+}
+
+/**
+ * et131x_free_busy_send_packets - Free and complete the stopped active sends
+ * @adapter: pointer to our adapter
+ *
+ * Assumption - Send spinlock has been acquired
+ */
+void et131x_free_busy_send_packets(struct et131x_adapter *adapter)
+{
+	struct tcb *tcb;
+	unsigned long flags;
+	u32 freed = 0;
+
+	/* Any packets being sent? Check the first TCB on the send list */
+	spin_lock_irqsave(&adapter->tcb_send_qlock, flags);
+
+	tcb = adapter->tx_ring.send_head;
+
+	while (tcb != NULL && freed < NUM_TCB) {
+		struct tcb *next = tcb->next;
+
+		adapter->tx_ring.send_head = next;
+
+		if (next == NULL)
+			adapter->tx_ring.send_tail = NULL;
+
+		adapter->tx_ring.used--;
+
+		spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags);
+
+		freed++;
+		free_send_packet(adapter, tcb);
+
+		spin_lock_irqsave(&adapter->tcb_send_qlock, flags);
+
+		tcb = adapter->tx_ring.send_head;
+	}
+
+	WARN_ON(freed == NUM_TCB);
+
+	spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags);
+
+	adapter->tx_ring.used = 0;
+}
+
+/**
+ * et131x_handle_send_interrupt - Interrupt handler for sending processing
+ * @adapter: pointer to our adapter
+ *
+ * Re-claim the send resources, complete sends and get more to send from
+ * the send wait queue.
+ *
+ * Assumption - Send spinlock has been acquired
+ */
+void et131x_handle_send_interrupt(struct et131x_adapter *adapter)
+{
+	unsigned long flags;
+	u32 serviced;
+	struct tcb *tcb;
+	u32 index;
+
+	serviced = readl(&adapter->regs->txdma.new_service_complete);
+	index = INDEX10(serviced);
+
+	/* Has the ring wrapped?  Process any descriptors that do not have
+	 * the same "wrap" indicator as the current completion indicator
+	 */
+	spin_lock_irqsave(&adapter->tcb_send_qlock, flags);
+
+	tcb = adapter->tx_ring.send_head;
+
+	while (tcb &&
+	       ((serviced ^ tcb->index) & ET_DMA10_WRAP) &&
+	       index < INDEX10(tcb->index)) {
+		adapter->tx_ring.used--;
+		adapter->tx_ring.send_head = tcb->next;
+		if (tcb->next == NULL)
+			adapter->tx_ring.send_tail = NULL;
+
+		spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags);
+		free_send_packet(adapter, tcb);
+		spin_lock_irqsave(&adapter->tcb_send_qlock, flags);
+
+		/* Goto the next packet */
+		tcb = adapter->tx_ring.send_head;
+	}
+	while (tcb &&
+	       !((serviced ^ tcb->index) & ET_DMA10_WRAP)
+	       && index > (tcb->index & ET_DMA10_MASK)) {
+		adapter->tx_ring.used--;
+		adapter->tx_ring.send_head = tcb->next;
+		if (tcb->next == NULL)
+			adapter->tx_ring.send_tail = NULL;
+
+		spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags);
+		free_send_packet(adapter, tcb);
+		spin_lock_irqsave(&adapter->tcb_send_qlock, flags);
+
+		/* Goto the next packet */
+		tcb = adapter->tx_ring.send_head;
+	}
+
+	/* Wake up the queue when we hit a low-water mark */
+	if (adapter->tx_ring.used <= NUM_TCB / 3)
+		netif_wake_queue(adapter->netdev);
+
+	spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags);
+}
+
+/* ETHTOOL functions */
+
+static int et131x_get_settings(struct net_device *netdev,
+			       struct ethtool_cmd *cmd)
+{
+	struct et131x_adapter *adapter = netdev_priv(netdev);
+
+	return phy_ethtool_gset(adapter->phydev, cmd);
+}
+
+static int et131x_set_settings(struct net_device *netdev,
+			       struct ethtool_cmd *cmd)
+{
+	struct et131x_adapter *adapter = netdev_priv(netdev);
+
+	return phy_ethtool_sset(adapter->phydev, cmd);
+}
+
+static int et131x_get_regs_len(struct net_device *netdev)
+{
+#define ET131X_REGS_LEN 256
+	return ET131X_REGS_LEN * sizeof(u32);
+}
+
+static void et131x_get_regs(struct net_device *netdev,
+			    struct ethtool_regs *regs, void *regs_data)
+{
+	struct et131x_adapter *adapter = netdev_priv(netdev);
+	struct address_map __iomem *aregs = adapter->regs;
+	u32 *regs_buff = regs_data;
+	u32 num = 0;
+
+	memset(regs_data, 0, et131x_get_regs_len(netdev));
+
+	regs->version = (1 << 24) | (adapter->pdev->revision << 16) |
+			adapter->pdev->device;
+
+	/* PHY regs */
+	et131x_mii_read(adapter, MII_BMCR, (u16 *)&regs_buff[num++]);
+	et131x_mii_read(adapter, MII_BMSR, (u16 *)&regs_buff[num++]);
+	et131x_mii_read(adapter, MII_PHYSID1, (u16 *)&regs_buff[num++]);
+	et131x_mii_read(adapter, MII_PHYSID2, (u16 *)&regs_buff[num++]);
+	et131x_mii_read(adapter, MII_ADVERTISE, (u16 *)&regs_buff[num++]);
+	et131x_mii_read(adapter, MII_LPA, (u16 *)&regs_buff[num++]);
+	et131x_mii_read(adapter, MII_EXPANSION, (u16 *)&regs_buff[num++]);
+	/* Autoneg next page transmit reg */
+	et131x_mii_read(adapter, 0x07, (u16 *)&regs_buff[num++]);
+	/* Link partner next page reg */
+	et131x_mii_read(adapter, 0x08, (u16 *)&regs_buff[num++]);
+	et131x_mii_read(adapter, MII_CTRL1000, (u16 *)&regs_buff[num++]);
+	et131x_mii_read(adapter, MII_STAT1000, (u16 *)&regs_buff[num++]);
+	et131x_mii_read(adapter, MII_ESTATUS, (u16 *)&regs_buff[num++]);
+	et131x_mii_read(adapter, PHY_INDEX_REG, (u16 *)&regs_buff[num++]);
+	et131x_mii_read(adapter, PHY_DATA_REG, (u16 *)&regs_buff[num++]);
+	et131x_mii_read(adapter, PHY_MPHY_CONTROL_REG,
+			(u16 *)&regs_buff[num++]);
+	et131x_mii_read(adapter, PHY_LOOPBACK_CONTROL,
+			(u16 *)&regs_buff[num++]);
+	et131x_mii_read(adapter, PHY_LOOPBACK_CONTROL+1,
+			(u16 *)&regs_buff[num++]);
+	et131x_mii_read(adapter, PHY_REGISTER_MGMT_CONTROL,
+			(u16 *)&regs_buff[num++]);
+	et131x_mii_read(adapter, PHY_CONFIG, (u16 *)&regs_buff[num++]);
+	et131x_mii_read(adapter, PHY_PHY_CONTROL, (u16 *)&regs_buff[num++]);
+	et131x_mii_read(adapter, PHY_INTERRUPT_MASK, (u16 *)&regs_buff[num++]);
+	et131x_mii_read(adapter, PHY_INTERRUPT_STATUS,
+			(u16 *)&regs_buff[num++]);
+	et131x_mii_read(adapter, PHY_PHY_STATUS, (u16 *)&regs_buff[num++]);
+	et131x_mii_read(adapter, PHY_LED_1, (u16 *)&regs_buff[num++]);
+	et131x_mii_read(adapter, PHY_LED_2, (u16 *)&regs_buff[num++]);
+
+	/* Global regs */
+	regs_buff[num++] = readl(&aregs->global.txq_start_addr);
+	regs_buff[num++] = readl(&aregs->global.txq_end_addr);
+	regs_buff[num++] = readl(&aregs->global.rxq_start_addr);
+	regs_buff[num++] = readl(&aregs->global.rxq_end_addr);
+	regs_buff[num++] = readl(&aregs->global.pm_csr);
+	regs_buff[num++] = adapter->stats.interrupt_status;
+	regs_buff[num++] = readl(&aregs->global.int_mask);
+	regs_buff[num++] = readl(&aregs->global.int_alias_clr_en);
+	regs_buff[num++] = readl(&aregs->global.int_status_alias);
+	regs_buff[num++] = readl(&aregs->global.sw_reset);
+	regs_buff[num++] = readl(&aregs->global.slv_timer);
+	regs_buff[num++] = readl(&aregs->global.msi_config);
+	regs_buff[num++] = readl(&aregs->global.loopback);
+	regs_buff[num++] = readl(&aregs->global.watchdog_timer);
+
+	/* TXDMA regs */
+	regs_buff[num++] = readl(&aregs->txdma.csr);
+	regs_buff[num++] = readl(&aregs->txdma.pr_base_hi);
+	regs_buff[num++] = readl(&aregs->txdma.pr_base_lo);
+	regs_buff[num++] = readl(&aregs->txdma.pr_num_des);
+	regs_buff[num++] = readl(&aregs->txdma.txq_wr_addr);
+	regs_buff[num++] = readl(&aregs->txdma.txq_wr_addr_ext);
+	regs_buff[num++] = readl(&aregs->txdma.txq_rd_addr);
+	regs_buff[num++] = readl(&aregs->txdma.dma_wb_base_hi);
+	regs_buff[num++] = readl(&aregs->txdma.dma_wb_base_lo);
+	regs_buff[num++] = readl(&aregs->txdma.service_request);
+	regs_buff[num++] = readl(&aregs->txdma.service_complete);
+	regs_buff[num++] = readl(&aregs->txdma.cache_rd_index);
+	regs_buff[num++] = readl(&aregs->txdma.cache_wr_index);
+	regs_buff[num++] = readl(&aregs->txdma.tx_dma_error);
+	regs_buff[num++] = readl(&aregs->txdma.desc_abort_cnt);
+	regs_buff[num++] = readl(&aregs->txdma.payload_abort_cnt);
+	regs_buff[num++] = readl(&aregs->txdma.writeback_abort_cnt);
+	regs_buff[num++] = readl(&aregs->txdma.desc_timeout_cnt);
+	regs_buff[num++] = readl(&aregs->txdma.payload_timeout_cnt);
+	regs_buff[num++] = readl(&aregs->txdma.writeback_timeout_cnt);
+	regs_buff[num++] = readl(&aregs->txdma.desc_error_cnt);
+	regs_buff[num++] = readl(&aregs->txdma.payload_error_cnt);
+	regs_buff[num++] = readl(&aregs->txdma.writeback_error_cnt);
+	regs_buff[num++] = readl(&aregs->txdma.dropped_tlp_cnt);
+	regs_buff[num++] = readl(&aregs->txdma.new_service_complete);
+	regs_buff[num++] = readl(&aregs->txdma.ethernet_packet_cnt);
+
+	/* RXDMA regs */
+	regs_buff[num++] = readl(&aregs->rxdma.csr);
+	regs_buff[num++] = readl(&aregs->rxdma.dma_wb_base_hi);
+	regs_buff[num++] = readl(&aregs->rxdma.dma_wb_base_lo);
+	regs_buff[num++] = readl(&aregs->rxdma.num_pkt_done);
+	regs_buff[num++] = readl(&aregs->rxdma.max_pkt_time);
+	regs_buff[num++] = readl(&aregs->rxdma.rxq_rd_addr);
+	regs_buff[num++] = readl(&aregs->rxdma.rxq_rd_addr_ext);
+	regs_buff[num++] = readl(&aregs->rxdma.rxq_wr_addr);
+	regs_buff[num++] = readl(&aregs->rxdma.psr_base_hi);
+	regs_buff[num++] = readl(&aregs->rxdma.psr_base_lo);
+	regs_buff[num++] = readl(&aregs->rxdma.psr_num_des);
+	regs_buff[num++] = readl(&aregs->rxdma.psr_avail_offset);
+	regs_buff[num++] = readl(&aregs->rxdma.psr_full_offset);
+	regs_buff[num++] = readl(&aregs->rxdma.psr_access_index);
+	regs_buff[num++] = readl(&aregs->rxdma.psr_min_des);
+	regs_buff[num++] = readl(&aregs->rxdma.fbr0_base_lo);
+	regs_buff[num++] = readl(&aregs->rxdma.fbr0_base_hi);
+	regs_buff[num++] = readl(&aregs->rxdma.fbr0_num_des);
+	regs_buff[num++] = readl(&aregs->rxdma.fbr0_avail_offset);
+	regs_buff[num++] = readl(&aregs->rxdma.fbr0_full_offset);
+	regs_buff[num++] = readl(&aregs->rxdma.fbr0_rd_index);
+	regs_buff[num++] = readl(&aregs->rxdma.fbr0_min_des);
+	regs_buff[num++] = readl(&aregs->rxdma.fbr1_base_lo);
+	regs_buff[num++] = readl(&aregs->rxdma.fbr1_base_hi);
+	regs_buff[num++] = readl(&aregs->rxdma.fbr1_num_des);
+	regs_buff[num++] = readl(&aregs->rxdma.fbr1_avail_offset);
+	regs_buff[num++] = readl(&aregs->rxdma.fbr1_full_offset);
+	regs_buff[num++] = readl(&aregs->rxdma.fbr1_rd_index);
+	regs_buff[num++] = readl(&aregs->rxdma.fbr1_min_des);
+}
+
+#define ET131X_DRVINFO_LEN 32 /* value from ethtool.h */
+static void et131x_get_drvinfo(struct net_device *netdev,
+			       struct ethtool_drvinfo *info)
+{
+	struct et131x_adapter *adapter = netdev_priv(netdev);
+
+	strncpy(info->driver, DRIVER_NAME, ET131X_DRVINFO_LEN);
+	strncpy(info->version, DRIVER_VERSION, ET131X_DRVINFO_LEN);
+	strncpy(info->bus_info, pci_name(adapter->pdev), ET131X_DRVINFO_LEN);
+}
+
+static struct ethtool_ops et131x_ethtool_ops = {
+	.get_settings	= et131x_get_settings,
+	.set_settings	= et131x_set_settings,
+	.get_drvinfo	= et131x_get_drvinfo,
+	.get_regs_len	= et131x_get_regs_len,
+	.get_regs	= et131x_get_regs,
+	.get_link = ethtool_op_get_link,
+};
+
+void et131x_set_ethtool_ops(struct net_device *netdev)
+{
+	SET_ETHTOOL_OPS(netdev, &et131x_ethtool_ops);
+}
+
+/* PCI functions */
+
+/**
+ * et131x_hwaddr_init - set up the MAC Address on the ET1310
+ * @adapter: pointer to our private adapter structure
+ */
+void et131x_hwaddr_init(struct et131x_adapter *adapter)
+{
+	/* If have our default mac from init and no mac address from
+	 * EEPROM then we need to generate the last octet and set it on the
+	 * device
+	 */
+	if (adapter->rom_addr[0] == 0x00 &&
+	    adapter->rom_addr[1] == 0x00 &&
+	    adapter->rom_addr[2] == 0x00 &&
+	    adapter->rom_addr[3] == 0x00 &&
+	    adapter->rom_addr[4] == 0x00 &&
+	    adapter->rom_addr[5] == 0x00) {
+		/*
+		 * We need to randomly generate the last octet so we
+		 * decrease our chances of setting the mac address to
+		 * same as another one of our cards in the system
+		 */
+		get_random_bytes(&adapter->addr[5], 1);
+		/*
+		 * We have the default value in the register we are
+		 * working with so we need to copy the current
+		 * address into the permanent address
+		 */
+		memcpy(adapter->rom_addr,
+			adapter->addr, ETH_ALEN);
+	} else {
+		/* We do not have an override address, so set the
+		 * current address to the permanent address and add
+		 * it to the device
+		 */
+		memcpy(adapter->addr,
+		       adapter->rom_addr, ETH_ALEN);
+	}
+}
+
+/**
+ * et131x_pci_init	 - initial PCI setup
+ * @adapter: pointer to our private adapter structure
+ * @pdev: our PCI device
+ *
+ * Perform the initial setup of PCI registers and if possible initialise
+ * the MAC address. At this point the I/O registers have yet to be mapped
+ */
+static int et131x_pci_init(struct et131x_adapter *adapter,
+						struct pci_dev *pdev)
+{
+	int i;
+	u8 max_payload;
+	u8 read_size_reg;
+
+	if (et131x_init_eeprom(adapter) < 0)
+		return -EIO;
+
+	/* Let's set up the PORT LOGIC Register.  First we need to know what
+	 * the max_payload_size is
+	 */
+	if (pci_read_config_byte(pdev, ET1310_PCI_MAX_PYLD, &max_payload)) {
+		dev_err(&pdev->dev,
+		    "Could not read PCI config space for Max Payload Size\n");
+		return -EIO;
+	}
+
+	/* Program the Ack/Nak latency and replay timers */
+	max_payload &= 0x07;	/* Only the lower 3 bits are valid */
+
+	if (max_payload < 2) {
+		static const u16 acknak[2] = { 0x76, 0xD0 };
+		static const u16 replay[2] = { 0x1E0, 0x2ED };
+
+		if (pci_write_config_word(pdev, ET1310_PCI_ACK_NACK,
+					       acknak[max_payload])) {
+			dev_err(&pdev->dev,
+			  "Could not write PCI config space for ACK/NAK\n");
+			return -EIO;
+		}
+		if (pci_write_config_word(pdev, ET1310_PCI_REPLAY,
+					       replay[max_payload])) {
+			dev_err(&pdev->dev,
+			  "Could not write PCI config space for Replay Timer\n");
+			return -EIO;
+		}
+	}
+
+	/* l0s and l1 latency timers.  We are using default values.
+	 * Representing 001 for L0s and 010 for L1
+	 */
+	if (pci_write_config_byte(pdev, ET1310_PCI_L0L1LATENCY, 0x11)) {
+		dev_err(&pdev->dev,
+		  "Could not write PCI config space for Latency Timers\n");
+		return -EIO;
+	}
+
+	/* Change the max read size to 2k */
+	if (pci_read_config_byte(pdev, 0x51, &read_size_reg)) {
+		dev_err(&pdev->dev,
+			"Could not read PCI config space for Max read size\n");
+		return -EIO;
+	}
+
+	read_size_reg &= 0x8f;
+	read_size_reg |= 0x40;
+
+	if (pci_write_config_byte(pdev, 0x51, read_size_reg)) {
+		dev_err(&pdev->dev,
+		      "Could not write PCI config space for Max read size\n");
+		return -EIO;
+	}
+
+	/* Get MAC address from config space if an eeprom exists, otherwise
+	 * the MAC address there will not be valid
+	 */
+	if (!adapter->has_eeprom) {
+		et131x_hwaddr_init(adapter);
+		return 0;
+	}
+
+	for (i = 0; i < ETH_ALEN; i++) {
+		if (pci_read_config_byte(pdev, ET1310_PCI_MAC_ADDRESS + i,
+					adapter->rom_addr + i)) {
+			dev_err(&pdev->dev, "Could not read PCI config space for MAC address\n");
+			return -EIO;
+		}
+	}
+	memcpy(adapter->addr, adapter->rom_addr, ETH_ALEN);
+	return 0;
+}
+
+/**
+ * et131x_error_timer_handler
+ * @data: timer-specific variable; here a pointer to our adapter structure
+ *
+ * The routine called when the error timer expires, to track the number of
+ * recurring errors.
+ */
+void et131x_error_timer_handler(unsigned long data)
+{
+	struct et131x_adapter *adapter = (struct et131x_adapter *) data;
+	struct phy_device *phydev = adapter->phydev;
+
+	if (et1310_in_phy_coma(adapter)) {
+		/* Bring the device immediately out of coma, to
+		 * prevent it from sleeping indefinitely, this
+		 * mechanism could be improved! */
+		et1310_disable_phy_coma(adapter);
+		adapter->boot_coma = 20;
+	} else {
+		et1310_update_macstat_host_counters(adapter);
+	}
+
+	if (!phydev->link && adapter->boot_coma < 11)
+		adapter->boot_coma++;
+
+	if (adapter->boot_coma == 10) {
+		if (!phydev->link) {
+			if (!et1310_in_phy_coma(adapter)) {
+				/* NOTE - This was originally a 'sync with
+				 *  interrupt'. How to do that under Linux?
+				 */
+				et131x_enable_interrupts(adapter);
+				et1310_enable_phy_coma(adapter);
+			}
+		}
+	}
+
+	/* This is a periodic timer, so reschedule */
+	mod_timer(&adapter->error_timer, jiffies +
+					  TX_ERROR_PERIOD * HZ / 1000);
+}
+
+/**
+ * et131x_configure_global_regs	-	configure JAGCore global regs
+ * @adapter: pointer to our adapter structure
+ *
+ * Used to configure the global registers on the JAGCore
+ */
+void et131x_configure_global_regs(struct et131x_adapter *adapter)
+{
+	struct global_regs __iomem *regs = &adapter->regs->global;
+
+	writel(0, &regs->rxq_start_addr);
+	writel(INTERNAL_MEM_SIZE - 1, &regs->txq_end_addr);
+
+	if (adapter->registry_jumbo_packet < 2048) {
+		/* Tx / RxDMA and Tx/Rx MAC interfaces have a 1k word
+		 * block of RAM that the driver can split between Tx
+		 * and Rx as it desires.  Our default is to split it
+		 * 50/50:
+		 */
+		writel(PARM_RX_MEM_END_DEF, &regs->rxq_end_addr);
+		writel(PARM_RX_MEM_END_DEF + 1, &regs->txq_start_addr);
+	} else if (adapter->registry_jumbo_packet < 8192) {
+		/* For jumbo packets > 2k but < 8k, split 50-50. */
+		writel(INTERNAL_MEM_RX_OFFSET, &regs->rxq_end_addr);
+		writel(INTERNAL_MEM_RX_OFFSET + 1, &regs->txq_start_addr);
+	} else {
+		/* 9216 is the only packet size greater than 8k that
+		 * is available. The Tx buffer has to be big enough
+		 * for one whole packet on the Tx side. We'll make
+		 * the Tx 9408, and give the rest to Rx
+		 */
+		writel(0x01b3, &regs->rxq_end_addr);
+		writel(0x01b4, &regs->txq_start_addr);
+	}
+
+	/* Initialize the loopback register. Disable all loopbacks. */
+	writel(0, &regs->loopback);
+
+	/* MSI Register */
+	writel(0, &regs->msi_config);
+
+	/* By default, disable the watchdog timer.  It will be enabled when
+	 * a packet is queued.
+	 */
+	writel(0, &regs->watchdog_timer);
+}
+
+/**
+ * et131x_adapter_setup - Set the adapter up as per cassini+ documentation
+ * @adapter: pointer to our private adapter structure
+ *
+ * Returns 0 on success, errno on failure (as defined in errno.h)
+ */
+void et131x_adapter_setup(struct et131x_adapter *adapter)
+{
+	/* Configure the JAGCore */
+	et131x_configure_global_regs(adapter);
+
+	et1310_config_mac_regs1(adapter);
+
+	/* Configure the MMC registers */
+	/* All we need to do is initialize the Memory Control Register */
+	writel(ET_MMC_ENABLE, &adapter->regs->mmc.mmc_ctrl);
+
+	et1310_config_rxmac_regs(adapter);
+	et1310_config_txmac_regs(adapter);
+
+	et131x_config_rx_dma_regs(adapter);
+	et131x_config_tx_dma_regs(adapter);
+
+	et1310_config_macstat_regs(adapter);
+
+	et1310_phy_power_down(adapter, 0);
+	et131x_xcvr_init(adapter);
+}
+
+/**
+ * et131x_soft_reset - Issue a soft reset to the hardware, complete for ET1310
+ * @adapter: pointer to our private adapter structure
+ */
+void et131x_soft_reset(struct et131x_adapter *adapter)
+{
+	/* Disable MAC Core */
+	writel(0xc00f0000, &adapter->regs->mac.cfg1);
+
+	/* Set everything to a reset value */
+	writel(0x7F, &adapter->regs->global.sw_reset);
+	writel(0x000f0000, &adapter->regs->mac.cfg1);
+	writel(0x00000000, &adapter->regs->mac.cfg1);
+}
+
+/**
+ * et131x_align_allocated_memory - Align allocated memory on a given boundary
+ * @adapter: pointer to our adapter structure
+ * @phys_addr: pointer to Physical address
+ * @offset: pointer to the offset variable
+ * @mask: correct mask
+ */
+void et131x_align_allocated_memory(struct et131x_adapter *adapter,
+				   uint64_t *phys_addr,
+				   uint64_t *offset, uint64_t mask)
+{
+	uint64_t new_addr;
+
+	*offset = 0;
+
+	new_addr = *phys_addr & ~mask;
+
+	if (new_addr != *phys_addr) {
+		/* Move to next aligned block */
+		new_addr += mask + 1;
+		/* Return offset for adjusting virt addr */
+		*offset = new_addr - *phys_addr;
+		/* Return new physical address */
+		*phys_addr = new_addr;
+	}
+}
+
+/**
+ * et131x_adapter_memory_alloc
+ * @adapter: pointer to our private adapter structure
+ *
+ * Returns 0 on success, errno on failure (as defined in errno.h).
+ *
+ * Allocate all the memory blocks for send, receive and others.
+ */
+int et131x_adapter_memory_alloc(struct et131x_adapter *adapter)
+{
+	int status;
+
+	/* Allocate memory for the Tx Ring */
+	status = et131x_tx_dma_memory_alloc(adapter);
+	if (status != 0) {
+		dev_err(&adapter->pdev->dev,
+			  "et131x_tx_dma_memory_alloc FAILED\n");
+		return status;
+	}
+	/* Receive buffer memory allocation */
+	status = et131x_rx_dma_memory_alloc(adapter);
+	if (status != 0) {
+		dev_err(&adapter->pdev->dev,
+			  "et131x_rx_dma_memory_alloc FAILED\n");
+		et131x_tx_dma_memory_free(adapter);
+		return status;
+	}
+
+	/* Init receive data structures */
+	status = et131x_init_recv(adapter);
+	if (status != 0) {
+		dev_err(&adapter->pdev->dev,
+			"et131x_init_recv FAILED\n");
+		et131x_tx_dma_memory_free(adapter);
+		et131x_rx_dma_memory_free(adapter);
+	}
+	return status;
+}
+
+/**
+ * et131x_adapter_memory_free - Free all memory allocated for use by Tx & Rx
+ * @adapter: pointer to our private adapter structure
+ */
+void et131x_adapter_memory_free(struct et131x_adapter *adapter)
+{
+	/* Free DMA memory */
+	et131x_tx_dma_memory_free(adapter);
+	et131x_rx_dma_memory_free(adapter);
+}
+
+static void et131x_adjust_link(struct net_device *netdev)
+{
+	struct et131x_adapter *adapter = netdev_priv(netdev);
+	struct  phy_device *phydev = adapter->phydev;
+
+	if (netif_carrier_ok(netdev)) {
+		adapter->boot_coma = 20;
+
+		if (phydev && phydev->speed == SPEED_10) {
+			/*
+			 * NOTE - Is there a way to query this without
+			 * TruePHY?
+			 * && TRU_QueryCoreType(adapter->hTruePhy, 0)==
+			 * EMI_TRUEPHY_A13O) {
+			 */
+			u16 register18;
+
+			et131x_mii_read(adapter, PHY_MPHY_CONTROL_REG,
+					 &register18);
+			et131x_mii_write(adapter, PHY_MPHY_CONTROL_REG,
+					 register18 | 0x4);
+			et131x_mii_write(adapter, PHY_INDEX_REG,
+					 register18 | 0x8402);
+			et131x_mii_write(adapter, PHY_DATA_REG,
+					 register18 | 511);
+			et131x_mii_write(adapter, PHY_MPHY_CONTROL_REG,
+					 register18);
+		}
+
+		et1310_config_flow_control(adapter);
+
+		if (phydev && phydev->speed == SPEED_1000 &&
+				adapter->registry_jumbo_packet > 2048) {
+			u16 reg;
+
+			et131x_mii_read(adapter, PHY_CONFIG, &reg);
+			reg &= ~ET_PHY_CONFIG_TX_FIFO_DEPTH;
+			reg |= ET_PHY_CONFIG_FIFO_DEPTH_32;
+			et131x_mii_write(adapter, PHY_CONFIG, reg);
+		}
+
+		et131x_set_rx_dma_timer(adapter);
+		et1310_config_mac_regs2(adapter);
+	}
+
+	if (phydev && phydev->link != adapter->link) {
+		/*
+		 * Check to see if we are in coma mode and if
+		 * so, disable it because we will not be able
+		 * to read PHY values until we are out.
+		 */
+		if (et1310_in_phy_coma(adapter))
+			et1310_disable_phy_coma(adapter);
+
+		if (phydev->link) {
+			adapter->boot_coma = 20;
+		} else {
+			dev_warn(&adapter->pdev->dev,
+			    "Link down - cable problem ?\n");
+			adapter->boot_coma = 0;
+
+			if (phydev->speed == SPEED_10) {
+				/* NOTE - Is there a way to query this without
+				 * TruePHY?
+				 * && TRU_QueryCoreType(adapter->hTruePhy, 0) ==
+				 * EMI_TRUEPHY_A13O)
+				 */
+				u16 register18;
+
+				et131x_mii_read(adapter, PHY_MPHY_CONTROL_REG,
+						 &register18);
+				et131x_mii_write(adapter, PHY_MPHY_CONTROL_REG,
+						 register18 | 0x4);
+				et131x_mii_write(adapter, PHY_INDEX_REG,
+						 register18 | 0x8402);
+				et131x_mii_write(adapter, PHY_DATA_REG,
+						 register18 | 511);
+				et131x_mii_write(adapter, PHY_MPHY_CONTROL_REG,
+						 register18);
+			}
+
+			/* Free the packets being actively sent & stopped */
+			et131x_free_busy_send_packets(adapter);
+
+			/* Re-initialize the send structures */
+			et131x_init_send(adapter);
+
+			/* Reset the RFD list and re-start RU */
+			et131x_reset_recv(adapter);
+
+			/*
+			 * Bring the device back to the state it was during
+			 * init prior to autonegotiation being complete. This
+			 * way, when we get the auto-neg complete interrupt,
+			 * we can complete init by calling config_mac_regs2.
+			 */
+			et131x_soft_reset(adapter);
+
+			/* Setup ET1310 as per the documentation */
+			et131x_adapter_setup(adapter);
+
+			/* perform reset of tx/rx */
+			et131x_disable_txrx(netdev);
+			et131x_enable_txrx(netdev);
+		}
+
+		adapter->link = phydev->link;
+
+		phy_print_status(phydev);
+	}
+}
+
+static int et131x_mii_probe(struct net_device *netdev)
+{
+	struct et131x_adapter *adapter = netdev_priv(netdev);
+	struct  phy_device *phydev = NULL;
+
+	phydev = phy_find_first(adapter->mii_bus);
+	if (!phydev) {
+		dev_err(&adapter->pdev->dev, "no PHY found\n");
+		return -ENODEV;
+	}
+
+	phydev = phy_connect(netdev, dev_name(&phydev->dev),
+			&et131x_adjust_link, 0, PHY_INTERFACE_MODE_MII);
+
+	if (IS_ERR(phydev)) {
+		dev_err(&adapter->pdev->dev, "Could not attach to PHY\n");
+		return PTR_ERR(phydev);
+	}
+
+	phydev->supported &= (SUPPORTED_10baseT_Half
+				| SUPPORTED_10baseT_Full
+				| SUPPORTED_100baseT_Half
+				| SUPPORTED_100baseT_Full
+				| SUPPORTED_Autoneg
+				| SUPPORTED_MII
+				| SUPPORTED_TP);
+
+	if (adapter->pdev->device != ET131X_PCI_DEVICE_ID_FAST)
+		phydev->supported |= SUPPORTED_1000baseT_Full;
+
+	phydev->advertising = phydev->supported;
+	adapter->phydev = phydev;
+
+	dev_info(&adapter->pdev->dev, "attached PHY driver [%s] "
+		 "(mii_bus:phy_addr=%s)\n",
+		 phydev->drv->name, dev_name(&phydev->dev));
+
+	return 0;
+}
+
+/**
+ * et131x_adapter_init
+ * @adapter: pointer to the private adapter struct
+ * @pdev: pointer to the PCI device
+ *
+ * Initialize the data structures for the et131x_adapter object and link
+ * them together with the platform provided device structures.
+ */
+static struct et131x_adapter *et131x_adapter_init(struct net_device *netdev,
+		struct pci_dev *pdev)
+{
+	static const u8 default_mac[] = { 0x00, 0x05, 0x3d, 0x00, 0x02, 0x00 };
+
+	struct et131x_adapter *adapter;
+
+	/* Allocate private adapter struct and copy in relevant information */
+	adapter = netdev_priv(netdev);
+	adapter->pdev = pci_dev_get(pdev);
+	adapter->netdev = netdev;
+
+	/* Do the same for the netdev struct */
+	netdev->irq = pdev->irq;
+	netdev->base_addr = pci_resource_start(pdev, 0);
+
+	/* Initialize spinlocks here */
+	spin_lock_init(&adapter->lock);
+	spin_lock_init(&adapter->tcb_send_qlock);
+	spin_lock_init(&adapter->tcb_ready_qlock);
+	spin_lock_init(&adapter->send_hw_lock);
+	spin_lock_init(&adapter->rcv_lock);
+	spin_lock_init(&adapter->rcv_pend_lock);
+	spin_lock_init(&adapter->fbr_lock);
+	spin_lock_init(&adapter->phy_lock);
+
+	adapter->registry_jumbo_packet = 1514;	/* 1514-9216 */
+
+	/* Set the MAC address to a default */
+	memcpy(adapter->addr, default_mac, ETH_ALEN);
+
+	return adapter;
+}
+
+/**
+ * et131x_pci_setup - Perform device initialization
+ * @pdev: a pointer to the device's pci_dev structure
+ * @ent: this device's entry in the pci_device_id table
+ *
+ * Returns 0 on success, errno on failure (as defined in errno.h)
+ *
+ * Registered in the pci_driver structure, this function is called when the
+ * PCI subsystem finds a new PCI device which matches the information
+ * contained in the pci_device_id table. This routine is the equivalent to
+ * a device insertion routine.
+ */
+static int __devinit et131x_pci_setup(struct pci_dev *pdev,
+			       const struct pci_device_id *ent)
+{
+	int result;
+	int pm_cap;
+	struct net_device *netdev;
+	struct et131x_adapter *adapter;
+	int ii;
+
+	result = pci_enable_device(pdev);
+	if (result) {
+		dev_err(&pdev->dev, "pci_enable_device() failed\n");
+		goto err_out;
+	}
+
+	/* Perform some basic PCI checks */
+	if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
+		dev_err(&pdev->dev, "Can't find PCI device's base address\n");
+		goto err_disable;
+	}
+
+	if (pci_request_regions(pdev, DRIVER_NAME)) {
+		dev_err(&pdev->dev, "Can't get PCI resources\n");
+		goto err_disable;
+	}
+
+	pci_set_master(pdev);
+
+	/* Query PCI for Power Mgmt Capabilities
+	 *
+	 * NOTE: Now reading PowerMgmt in another location; is this still
+	 * needed?
+	 */
+	pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM);
+	if (!pm_cap) {
+		dev_err(&pdev->dev,
+			  "Cannot find Power Management capabilities\n");
+		result = -EIO;
+		goto err_release_res;
+	}
+
+	/* Check the DMA addressing support of this device */
+	if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
+		result = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
+		if (result) {
+			dev_err(&pdev->dev,
+			  "Unable to obtain 64 bit DMA for consistent allocations\n");
+			goto err_release_res;
+		}
+	} else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
+		result = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+		if (result) {
+			dev_err(&pdev->dev,
+			  "Unable to obtain 32 bit DMA for consistent allocations\n");
+			goto err_release_res;
+		}
+	} else {
+		dev_err(&pdev->dev, "No usable DMA addressing method\n");
+		result = -EIO;
+		goto err_release_res;
+	}
+
+	/* Allocate netdev and private adapter structs */
+	netdev = et131x_device_alloc();
+	if (!netdev) {
+		dev_err(&pdev->dev, "Couldn't alloc netdev struct\n");
+		result = -ENOMEM;
+		goto err_release_res;
+	}
+
+	SET_NETDEV_DEV(netdev, &pdev->dev);
+	et131x_set_ethtool_ops(netdev);
+
+	adapter = et131x_adapter_init(netdev, pdev);
+
+	/* Initialise the PCI setup for the device */
+	et131x_pci_init(adapter, pdev);
+
+	/* Map the bus-relative registers to system virtual memory */
+	adapter->regs = pci_ioremap_bar(pdev, 0);
+	if (!adapter->regs) {
+		dev_err(&pdev->dev, "Cannot map device registers\n");
+		result = -ENOMEM;
+		goto err_free_dev;
+	}
+
+	/* If Phy COMA mode was enabled when we went down, disable it here. */
+	writel(ET_PMCSR_INIT,  &adapter->regs->global.pm_csr);
+
+	/* Issue a global reset to the et1310 */
+	et131x_soft_reset(adapter);
+
+	/* Disable all interrupts (paranoid) */
+	et131x_disable_interrupts(adapter);
+
+	/* Allocate DMA memory */
+	result = et131x_adapter_memory_alloc(adapter);
+	if (result) {
+		dev_err(&pdev->dev, "Could not alloc adapater memory (DMA)\n");
+		goto err_iounmap;
+	}
+
+	/* Init send data structures */
+	et131x_init_send(adapter);
+
+	/* Set up the task structure for the ISR's deferred handler */
+	INIT_WORK(&adapter->task, et131x_isr_handler);
+
+	/* Copy address into the net_device struct */
+	memcpy(netdev->dev_addr, adapter->addr, ETH_ALEN);
+
+	/* Init variable for counting how long we do not have link status */
+	adapter->boot_coma = 0;
+	et1310_disable_phy_coma(adapter);
+
+	/* Setup the mii_bus struct */
+	adapter->mii_bus = mdiobus_alloc();
+	if (!adapter->mii_bus) {
+		dev_err(&pdev->dev, "Alloc of mii_bus struct failed\n");
+		goto err_mem_free;
+	}
+
+	adapter->mii_bus->name = "et131x_eth_mii";
+	snprintf(adapter->mii_bus->id, MII_BUS_ID_SIZE, "%x",
+		(adapter->pdev->bus->number << 8) | adapter->pdev->devfn);
+	adapter->mii_bus->priv = netdev;
+	adapter->mii_bus->read = et131x_mdio_read;
+	adapter->mii_bus->write = et131x_mdio_write;
+	adapter->mii_bus->reset = et131x_mdio_reset;
+	adapter->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
+	if (!adapter->mii_bus->irq) {
+		dev_err(&pdev->dev, "mii_bus irq allocation failed\n");
+		goto err_mdio_free;
+	}
+
+	for (ii = 0; ii < PHY_MAX_ADDR; ii++)
+		adapter->mii_bus->irq[ii] = PHY_POLL;
+
+	if (mdiobus_register(adapter->mii_bus)) {
+		dev_err(&pdev->dev, "failed to register MII bus\n");
+		mdiobus_free(adapter->mii_bus);
+		goto err_mdio_free_irq;
+	}
+
+	if (et131x_mii_probe(netdev)) {
+		dev_err(&pdev->dev, "failed to probe MII bus\n");
+		goto err_mdio_unregister;
+	}
+
+	/* Setup et1310 as per the documentation */
+	et131x_adapter_setup(adapter);
+
+	/* We can enable interrupts now
+	 *
+	 *  NOTE - Because registration of interrupt handler is done in the
+	 *         device's open(), defer enabling device interrupts to that
+	 *         point
+	 */
+
+	/* Register the net_device struct with the Linux network layer */
+	result = register_netdev(netdev);
+	if (result != 0) {
+		dev_err(&pdev->dev, "register_netdev() failed\n");
+		goto err_mdio_unregister;
+	}
+
+	/* Register the net_device struct with the PCI subsystem. Save a copy
+	 * of the PCI config space for this device now that the device has
+	 * been initialized, just in case it needs to be quickly restored.
+	 */
+	pci_set_drvdata(pdev, netdev);
+	pci_save_state(adapter->pdev);
+
+	return result;
+
+err_mdio_unregister:
+	mdiobus_unregister(adapter->mii_bus);
+err_mdio_free_irq:
+	kfree(adapter->mii_bus->irq);
+err_mdio_free:
+	mdiobus_free(adapter->mii_bus);
+err_mem_free:
+	et131x_adapter_memory_free(adapter);
+err_iounmap:
+	iounmap(adapter->regs);
+err_free_dev:
+	pci_dev_put(pdev);
+	free_netdev(netdev);
+err_release_res:
+	pci_release_regions(pdev);
+err_disable:
+	pci_disable_device(pdev);
+err_out:
+	return result;
+}
+
+/**
+ * et131x_pci_remove
+ * @pdev: a pointer to the device's pci_dev structure
+ *
+ * Registered in the pci_driver structure, this function is called when the
+ * PCI subsystem detects that a PCI device which matches the information
+ * contained in the pci_device_id table has been removed.
+ */
+static void __devexit et131x_pci_remove(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct et131x_adapter *adapter = netdev_priv(netdev);
+
+	unregister_netdev(netdev);
+	mdiobus_unregister(adapter->mii_bus);
+	kfree(adapter->mii_bus->irq);
+	mdiobus_free(adapter->mii_bus);
+
+	et131x_adapter_memory_free(adapter);
+	iounmap(adapter->regs);
+	pci_dev_put(pdev);
+
+	free_netdev(netdev);
+	pci_release_regions(pdev);
+	pci_disable_device(pdev);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int et131x_suspend(struct device *dev)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+	struct net_device *netdev = pci_get_drvdata(pdev);
+
+	if (netif_running(netdev)) {
+		netif_device_detach(netdev);
+		et131x_down(netdev);
+		pci_save_state(pdev);
+	}
+
+	return 0;
+}
+
+static int et131x_resume(struct device *dev)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+	struct net_device *netdev = pci_get_drvdata(pdev);
+
+	if (netif_running(netdev)) {
+		pci_restore_state(pdev);
+		et131x_up(netdev);
+		netif_device_attach(netdev);
+	}
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(et131x_pm_ops, et131x_suspend, et131x_resume);
+#define ET131X_PM_OPS (&et131x_pm_ops)
+#else
+#define ET131X_PM_OPS NULL
+#endif
+
+static struct pci_device_id et131x_pci_table[] __devinitdata = {
+	{ET131X_PCI_VENDOR_ID, ET131X_PCI_DEVICE_ID_GIG, PCI_ANY_ID,
+	 PCI_ANY_ID, 0, 0, 0UL},
+	{ET131X_PCI_VENDOR_ID, ET131X_PCI_DEVICE_ID_FAST, PCI_ANY_ID,
+	 PCI_ANY_ID, 0, 0, 0UL},
+	{0,}
+};
+
+MODULE_DEVICE_TABLE(pci, et131x_pci_table);
+
+static struct pci_driver et131x_driver = {
+	.name		= DRIVER_NAME,
+	.id_table	= et131x_pci_table,
+	.probe		= et131x_pci_setup,
+	.remove		= __devexit_p(et131x_pci_remove),
+	.driver.pm	= ET131X_PM_OPS,
+};
+
+/**
+ * et131x_init_module - The "main" entry point called on driver initialization
+ *
+ * Returns 0 on success, errno on failure (as defined in errno.h)
+ */
+static int __init et131x_init_module(void)
+{
+	return pci_register_driver(&et131x_driver);
+}
+
+/**
+ * et131x_cleanup_module - The entry point called on driver cleanup
+ */
+static void __exit et131x_cleanup_module(void)
+{
+	pci_unregister_driver(&et131x_driver);
+}
+
+module_init(et131x_init_module);
+module_exit(et131x_cleanup_module);
+
+/* ISR functions */
+
+/**
+ *	et131x_enable_interrupts	-	enable interrupt
+ *	@adapter: et131x device
+ *
+ *	Enable the appropriate interrupts on the ET131x according to our
+ *	configuration
+ */
+void et131x_enable_interrupts(struct et131x_adapter *adapter)
+{
+	u32 mask;
+
+	/* Enable all global interrupts */
+	if (adapter->flowcontrol == FLOW_TXONLY ||
+			    adapter->flowcontrol == FLOW_BOTH)
+		mask = INT_MASK_ENABLE;
+	else
+		mask = INT_MASK_ENABLE_NO_FLOW;
+
+	writel(mask, &adapter->regs->global.int_mask);
+}
+
+/**
+ *	et131x_disable_interrupts	-	interrupt disable
+ *	@adapter: et131x device
+ *
+ *	Block all interrupts from the et131x device at the device itself
+ */
+void et131x_disable_interrupts(struct et131x_adapter *adapter)
+{
+	/* Disable all global interrupts */
+	writel(INT_MASK_DISABLE, &adapter->regs->global.int_mask);
+}
+
+
+/**
+ * et131x_isr - The Interrupt Service Routine for the driver.
+ * @irq: the IRQ on which the interrupt was received.
+ * @dev_id: device-specific info (here a pointer to a net_device struct)
+ *
+ * Returns a value indicating if the interrupt was handled.
+ */
+irqreturn_t et131x_isr(int irq, void *dev_id)
+{
+	bool handled = true;
+	struct net_device *netdev = (struct net_device *)dev_id;
+	struct et131x_adapter *adapter = NULL;
+	u32 status;
+
+	if (!netif_device_present(netdev)) {
+		handled = false;
+		goto out;
+	}
+
+	adapter = netdev_priv(netdev);
+
+	/* If the adapter is in low power state, then it should not
+	 * recognize any interrupt
+	 */
+
+	/* Disable Device Interrupts */
+	et131x_disable_interrupts(adapter);
+
+	/* Get a copy of the value in the interrupt status register
+	 * so we can process the interrupting section
+	 */
+	status = readl(&adapter->regs->global.int_status);
+
+	if (adapter->flowcontrol == FLOW_TXONLY ||
+	    adapter->flowcontrol == FLOW_BOTH) {
+		status &= ~INT_MASK_ENABLE;
+	} else {
+		status &= ~INT_MASK_ENABLE_NO_FLOW;
+	}
+
+	/* Make sure this is our interrupt */
+	if (!status) {
+		handled = false;
+		et131x_enable_interrupts(adapter);
+		goto out;
+	}
+
+	/* This is our interrupt, so process accordingly */
+
+	if (status & ET_INTR_WATCHDOG) {
+		struct tcb *tcb = adapter->tx_ring.send_head;
+
+		if (tcb)
+			if (++tcb->stale > 1)
+				status |= ET_INTR_TXDMA_ISR;
+
+		if (adapter->rx_ring.unfinished_receives)
+			status |= ET_INTR_RXDMA_XFR_DONE;
+		else if (tcb == NULL)
+			writel(0, &adapter->regs->global.watchdog_timer);
+
+		status &= ~ET_INTR_WATCHDOG;
+	}
+
+	if (status == 0) {
+		/* This interrupt has in some way been "handled" by
+		 * the ISR. Either it was a spurious Rx interrupt, or
+		 * it was a Tx interrupt that has been filtered by
+		 * the ISR.
+		 */
+		et131x_enable_interrupts(adapter);
+		goto out;
+	}
+
+	/* We need to save the interrupt status value for use in our
+	 * DPC. We will clear the software copy of that in that
+	 * routine.
+	 */
+	adapter->stats.interrupt_status = status;
+
+	/* Schedule the ISR handler as a bottom-half task in the
+	 * kernel's tq_immediate queue, and mark the queue for
+	 * execution
+	 */
+	schedule_work(&adapter->task);
+out:
+	return IRQ_RETVAL(handled);
+}
+
+/**
+ * et131x_isr_handler - The ISR handler
+ * @p_adapter, a pointer to the device's private adapter structure
+ *
+ * scheduled to run in a deferred context by the ISR. This is where the ISR's
+ * work actually gets done.
+ */
+void et131x_isr_handler(struct work_struct *work)
+{
+	struct et131x_adapter *adapter =
+		container_of(work, struct et131x_adapter, task);
+	u32 status = adapter->stats.interrupt_status;
+	struct address_map __iomem *iomem = adapter->regs;
+
+	/*
+	 * These first two are by far the most common.  Once handled, we clear
+	 * their two bits in the status word.  If the word is now zero, we
+	 * exit.
+	 */
+	/* Handle all the completed Transmit interrupts */
+	if (status & ET_INTR_TXDMA_ISR)
+		et131x_handle_send_interrupt(adapter);
+
+	/* Handle all the completed Receives interrupts */
+	if (status & ET_INTR_RXDMA_XFR_DONE)
+		et131x_handle_recv_interrupt(adapter);
+
+	status &= 0xffffffd7;
+
+	if (status) {
+		/* Handle the TXDMA Error interrupt */
+		if (status & ET_INTR_TXDMA_ERR) {
+			u32 txdma_err;
+
+			/* Following read also clears the register (COR) */
+			txdma_err = readl(&iomem->txdma.tx_dma_error);
+
+			dev_warn(&adapter->pdev->dev,
+				    "TXDMA_ERR interrupt, error = %d\n",
+				    txdma_err);
+		}
+
+		/* Handle Free Buffer Ring 0 and 1 Low interrupt */
+		if (status &
+		    (ET_INTR_RXDMA_FB_R0_LOW | ET_INTR_RXDMA_FB_R1_LOW)) {
+			/*
+			 * This indicates the number of unused buffers in
+			 * RXDMA free buffer ring 0 is <= the limit you
+			 * programmed. Free buffer resources need to be
+			 * returned.  Free buffers are consumed as packets
+			 * are passed from the network to the host. The host
+			 * becomes aware of the packets from the contents of
+			 * the packet status ring. This ring is queried when
+			 * the packet done interrupt occurs. Packets are then
+			 * passed to the OS. When the OS is done with the
+			 * packets the resources can be returned to the
+			 * ET1310 for re-use. This interrupt is one method of
+			 * returning resources.
+			 */
+
+			/* If the user has flow control on, then we will
+			 * send a pause packet, otherwise just exit
+			 */
+			if (adapter->flowcontrol == FLOW_TXONLY ||
+			    adapter->flowcontrol == FLOW_BOTH) {
+				u32 pm_csr;
+
+				/* Tell the device to send a pause packet via
+				 * the back pressure register (bp req  and
+				 * bp xon/xoff)
+				 */
+				pm_csr = readl(&iomem->global.pm_csr);
+				if (!et1310_in_phy_coma(adapter))
+					writel(3, &iomem->txmac.bp_ctrl);
+			}
+		}
+
+		/* Handle Packet Status Ring Low Interrupt */
+		if (status & ET_INTR_RXDMA_STAT_LOW) {
+
+			/*
+			 * Same idea as with the two Free Buffer Rings.
+			 * Packets going from the network to the host each
+			 * consume a free buffer resource and a packet status
+			 * resource.  These resoures are passed to the OS.
+			 * When the OS is done with the resources, they need
+			 * to be returned to the ET1310. This is one method
+			 * of returning the resources.
+			 */
+		}
+
+		/* Handle RXDMA Error Interrupt */
+		if (status & ET_INTR_RXDMA_ERR) {
+			/*
+			 * The rxdma_error interrupt is sent when a time-out
+			 * on a request issued by the JAGCore has occurred or
+			 * a completion is returned with an un-successful
+			 * status.  In both cases the request is considered
+			 * complete. The JAGCore will automatically re-try the
+			 * request in question. Normally information on events
+			 * like these are sent to the host using the "Advanced
+			 * Error Reporting" capability. This interrupt is
+			 * another way of getting similar information. The
+			 * only thing required is to clear the interrupt by
+			 * reading the ISR in the global resources. The
+			 * JAGCore will do a re-try on the request.  Normally
+			 * you should never see this interrupt. If you start
+			 * to see this interrupt occurring frequently then
+			 * something bad has occurred. A reset might be the
+			 * thing to do.
+			 */
+			/* TRAP();*/
+
+			dev_warn(&adapter->pdev->dev,
+				    "RxDMA_ERR interrupt, error %x\n",
+				    readl(&iomem->txmac.tx_test));
+		}
+
+		/* Handle the Wake on LAN Event */
+		if (status & ET_INTR_WOL) {
+			/*
+			 * This is a secondary interrupt for wake on LAN.
+			 * The driver should never see this, if it does,
+			 * something serious is wrong. We will TRAP the
+			 * message when we are in DBG mode, otherwise we
+			 * will ignore it.
+			 */
+			dev_err(&adapter->pdev->dev, "WAKE_ON_LAN interrupt\n");
+		}
+
+		/* Let's move on to the TxMac */
+		if (status & ET_INTR_TXMAC) {
+			u32 err = readl(&iomem->txmac.err);
+
+			/*
+			 * When any of the errors occur and TXMAC generates
+			 * an interrupt to report these errors, it usually
+			 * means that TXMAC has detected an error in the data
+			 * stream retrieved from the on-chip Tx Q. All of
+			 * these errors are catastrophic and TXMAC won't be
+			 * able to recover data when these errors occur.  In
+			 * a nutshell, the whole Tx path will have to be reset
+			 * and re-configured afterwards.
+			 */
+			dev_warn(&adapter->pdev->dev,
+				    "TXMAC interrupt, error 0x%08x\n",
+				    err);
+
+			/* If we are debugging, we want to see this error,
+			 * otherwise we just want the device to be reset and
+			 * continue
+			 */
+		}
+
+		/* Handle RXMAC Interrupt */
+		if (status & ET_INTR_RXMAC) {
+			/*
+			 * These interrupts are catastrophic to the device,
+			 * what we need to do is disable the interrupts and
+			 * set the flag to cause us to reset so we can solve
+			 * this issue.
+			 */
+			/* MP_SET_FLAG( adapter,
+						fMP_ADAPTER_HARDWARE_ERROR); */
+
+			dev_warn(&adapter->pdev->dev,
+			  "RXMAC interrupt, error 0x%08x.  Requesting reset\n",
+				    readl(&iomem->rxmac.err_reg));
+
+			dev_warn(&adapter->pdev->dev,
+				    "Enable 0x%08x, Diag 0x%08x\n",
+				    readl(&iomem->rxmac.ctrl),
+				    readl(&iomem->rxmac.rxq_diag));
+
+			/*
+			 * If we are debugging, we want to see this error,
+			 * otherwise we just want the device to be reset and
+			 * continue
+			 */
+		}
+
+		/* Handle MAC_STAT Interrupt */
+		if (status & ET_INTR_MAC_STAT) {
+			/*
+			 * This means at least one of the un-masked counters
+			 * in the MAC_STAT block has rolled over.  Use this
+			 * to maintain the top, software managed bits of the
+			 * counter(s).
+			 */
+			et1310_handle_macstat_interrupt(adapter);
+		}
+
+		/* Handle SLV Timeout Interrupt */
+		if (status & ET_INTR_SLV_TIMEOUT) {
+			/*
+			 * This means a timeout has occurred on a read or
+			 * write request to one of the JAGCore registers. The
+			 * Global Resources block has terminated the request
+			 * and on a read request, returned a "fake" value.
+			 * The most likely reasons are: Bad Address or the
+			 * addressed module is in a power-down state and
+			 * can't respond.
+			 */
+		}
+	}
+	et131x_enable_interrupts(adapter);
+}
+
+/* NETDEV functions */
+
+/**
+ * et131x_stats - Return the current device statistics.
+ * @netdev: device whose stats are being queried
+ *
+ * Returns 0 on success, errno on failure (as defined in errno.h)
+ */
+static struct net_device_stats *et131x_stats(struct net_device *netdev)
+{
+	struct et131x_adapter *adapter = netdev_priv(netdev);
+	struct net_device_stats *stats = &adapter->net_stats;
+	struct ce_stats *devstat = &adapter->stats;
+
+	stats->rx_errors = devstat->rx_length_errs +
+			   devstat->rx_align_errs +
+			   devstat->rx_crc_errs +
+			   devstat->rx_code_violations +
+			   devstat->rx_other_errs;
+	stats->tx_errors = devstat->tx_max_pkt_errs;
+	stats->multicast = devstat->multicast_pkts_rcvd;
+	stats->collisions = devstat->tx_collisions;
+
+	stats->rx_length_errors = devstat->rx_length_errs;
+	stats->rx_over_errors = devstat->rx_overflows;
+	stats->rx_crc_errors = devstat->rx_crc_errs;
+
+	/* NOTE: These stats don't have corresponding values in CE_STATS,
+	 * so we're going to have to update these directly from within the
+	 * TX/RX code
+	 */
+	/* stats->rx_bytes            = 20; devstat->; */
+	/* stats->tx_bytes            = 20;  devstat->; */
+	/* stats->rx_dropped          = devstat->; */
+	/* stats->tx_dropped          = devstat->; */
+
+	/*  NOTE: Not used, can't find analogous statistics */
+	/* stats->rx_frame_errors     = devstat->; */
+	/* stats->rx_fifo_errors      = devstat->; */
+	/* stats->rx_missed_errors    = devstat->; */
+
+	/* stats->tx_aborted_errors   = devstat->; */
+	/* stats->tx_carrier_errors   = devstat->; */
+	/* stats->tx_fifo_errors      = devstat->; */
+	/* stats->tx_heartbeat_errors = devstat->; */
+	/* stats->tx_window_errors    = devstat->; */
+	return stats;
+}
+
+/**
+ * et131x_enable_txrx - Enable tx/rx queues
+ * @netdev: device to be enabled
+ */
+void et131x_enable_txrx(struct net_device *netdev)
+{
+	struct et131x_adapter *adapter = netdev_priv(netdev);
+
+	/* Enable the Tx and Rx DMA engines (if not already enabled) */
+	et131x_rx_dma_enable(adapter);
+	et131x_tx_dma_enable(adapter);
+
+	/* Enable device interrupts */
+	if (adapter->flags & fMP_ADAPTER_INTERRUPT_IN_USE)
+		et131x_enable_interrupts(adapter);
+
+	/* We're ready to move some data, so start the queue */
+	netif_start_queue(netdev);
+}
+
+/**
+ * et131x_disable_txrx - Disable tx/rx queues
+ * @netdev: device to be disabled
+ */
+void et131x_disable_txrx(struct net_device *netdev)
+{
+	struct et131x_adapter *adapter = netdev_priv(netdev);
+
+	/* First thing is to stop the queue */
+	netif_stop_queue(netdev);
+
+	/* Stop the Tx and Rx DMA engines */
+	et131x_rx_dma_disable(adapter);
+	et131x_tx_dma_disable(adapter);
+
+	/* Disable device interrupts */
+	et131x_disable_interrupts(adapter);
+}
+
+/**
+ * et131x_up - Bring up a device for use.
+ * @netdev: device to be opened
+ */
+void et131x_up(struct net_device *netdev)
+{
+	struct et131x_adapter *adapter = netdev_priv(netdev);
+
+	et131x_enable_txrx(netdev);
+	phy_start(adapter->phydev);
+}
+
+/**
+ * et131x_open - Open the device for use.
+ * @netdev: device to be opened
+ *
+ * Returns 0 on success, errno on failure (as defined in errno.h)
+ */
+int et131x_open(struct net_device *netdev)
+{
+	int result = 0;
+	struct et131x_adapter *adapter = netdev_priv(netdev);
+
+	/* Start the timer to track NIC errors */
+	init_timer(&adapter->error_timer);
+	adapter->error_timer.expires = jiffies + TX_ERROR_PERIOD * HZ / 1000;
+	adapter->error_timer.function = et131x_error_timer_handler;
+	adapter->error_timer.data = (unsigned long)adapter;
+	add_timer(&adapter->error_timer);
+
+	/* Register our IRQ */
+	result = request_irq(netdev->irq, et131x_isr, IRQF_SHARED,
+					netdev->name, netdev);
+	if (result) {
+		dev_err(&adapter->pdev->dev, "could not register IRQ %d\n",
+			netdev->irq);
+		return result;
+	}
+
+	adapter->flags |= fMP_ADAPTER_INTERRUPT_IN_USE;
+
+	et131x_up(netdev);
+
+	return result;
+}
+
+/**
+ * et131x_down - Bring down the device
+ * @netdev: device to be broght down
+ */
+void et131x_down(struct net_device *netdev)
+{
+	struct et131x_adapter *adapter = netdev_priv(netdev);
+
+	/* Save the timestamp for the TX watchdog, prevent a timeout */
+	netdev->trans_start = jiffies;
+
+	phy_stop(adapter->phydev);
+	et131x_disable_txrx(netdev);
+}
+
+/**
+ * et131x_close - Close the device
+ * @netdev: device to be closed
+ *
+ * Returns 0 on success, errno on failure (as defined in errno.h)
+ */
+int et131x_close(struct net_device *netdev)
+{
+	struct et131x_adapter *adapter = netdev_priv(netdev);
+
+	et131x_down(netdev);
+
+	adapter->flags &= ~fMP_ADAPTER_INTERRUPT_IN_USE;
+	free_irq(netdev->irq, netdev);
+
+	/* Stop the error timer */
+	return del_timer_sync(&adapter->error_timer);
+}
+
+/**
+ * et131x_ioctl - The I/O Control handler for the driver
+ * @netdev: device on which the control request is being made
+ * @reqbuf: a pointer to the IOCTL request buffer
+ * @cmd: the IOCTL command code
+ *
+ * Returns 0 on success, errno on failure (as defined in errno.h)
+ */
+static int et131x_ioctl(struct net_device *netdev, struct ifreq *reqbuf, int cmd)
+{
+	struct et131x_adapter *adapter = netdev_priv(netdev);
+
+	if (!adapter->phydev)
+		return -EINVAL;
+
+	return phy_mii_ioctl(adapter->phydev, reqbuf, cmd);
+}
+
+/**
+ * et131x_set_packet_filter - Configures the Rx Packet filtering on the device
+ * @adapter: pointer to our private adapter structure
+ *
+ * FIXME: lot of dups with MAC code
+ *
+ * Returns 0 on success, errno on failure
+ */
+static int et131x_set_packet_filter(struct et131x_adapter *adapter)
+{
+	int status = 0;
+	uint32_t filter = adapter->packet_filter;
+	u32 ctrl;
+	u32 pf_ctrl;
+
+	ctrl = readl(&adapter->regs->rxmac.ctrl);
+	pf_ctrl = readl(&adapter->regs->rxmac.pf_ctrl);
+
+	/* Default to disabled packet filtering.  Enable it in the individual
+	 * case statements that require the device to filter something
+	 */
+	ctrl |= 0x04;
+
+	/* Set us to be in promiscuous mode so we receive everything, this
+	 * is also true when we get a packet filter of 0
+	 */
+	if ((filter & ET131X_PACKET_TYPE_PROMISCUOUS) || filter == 0)
+		pf_ctrl &= ~7;	/* Clear filter bits */
+	else {
+		/*
+		 * Set us up with Multicast packet filtering.  Three cases are
+		 * possible - (1) we have a multi-cast list, (2) we receive ALL
+		 * multicast entries or (3) we receive none.
+		 */
+		if (filter & ET131X_PACKET_TYPE_ALL_MULTICAST)
+			pf_ctrl &= ~2;	/* Multicast filter bit */
+		else {
+			et1310_setup_device_for_multicast(adapter);
+			pf_ctrl |= 2;
+			ctrl &= ~0x04;
+		}
+
+		/* Set us up with Unicast packet filtering */
+		if (filter & ET131X_PACKET_TYPE_DIRECTED) {
+			et1310_setup_device_for_unicast(adapter);
+			pf_ctrl |= 4;
+			ctrl &= ~0x04;
+		}
+
+		/* Set us up with Broadcast packet filtering */
+		if (filter & ET131X_PACKET_TYPE_BROADCAST) {
+			pf_ctrl |= 1;	/* Broadcast filter bit */
+			ctrl &= ~0x04;
+		} else
+			pf_ctrl &= ~1;
+
+		/* Setup the receive mac configuration registers - Packet
+		 * Filter control + the enable / disable for packet filter
+		 * in the control reg.
+		 */
+		writel(pf_ctrl, &adapter->regs->rxmac.pf_ctrl);
+		writel(ctrl, &adapter->regs->rxmac.ctrl);
+	}
+	return status;
+}
+
+/**
+ * et131x_multicast - The handler to configure multicasting on the interface
+ * @netdev: a pointer to a net_device struct representing the device
+ */
+static void et131x_multicast(struct net_device *netdev)
+{
+	struct et131x_adapter *adapter = netdev_priv(netdev);
+	uint32_t packet_filter = 0;
+	unsigned long flags;
+	struct netdev_hw_addr *ha;
+	int i;
+
+	spin_lock_irqsave(&adapter->lock, flags);
+
+	/* Before we modify the platform-independent filter flags, store them
+	 * locally. This allows us to determine if anything's changed and if
+	 * we even need to bother the hardware
+	 */
+	packet_filter = adapter->packet_filter;
+
+	/* Clear the 'multicast' flag locally; because we only have a single
+	 * flag to check multicast, and multiple multicast addresses can be
+	 * set, this is the easiest way to determine if more than one
+	 * multicast address is being set.
+	 */
+	packet_filter &= ~ET131X_PACKET_TYPE_MULTICAST;
+
+	/* Check the net_device flags and set the device independent flags
+	 * accordingly
+	 */
+
+	if (netdev->flags & IFF_PROMISC)
+		adapter->packet_filter |= ET131X_PACKET_TYPE_PROMISCUOUS;
+	else
+		adapter->packet_filter &= ~ET131X_PACKET_TYPE_PROMISCUOUS;
+
+	if (netdev->flags & IFF_ALLMULTI)
+		adapter->packet_filter |= ET131X_PACKET_TYPE_ALL_MULTICAST;
+
+	if (netdev_mc_count(netdev) > NIC_MAX_MCAST_LIST)
+		adapter->packet_filter |= ET131X_PACKET_TYPE_ALL_MULTICAST;
+
+	if (netdev_mc_count(netdev) < 1) {
+		adapter->packet_filter &= ~ET131X_PACKET_TYPE_ALL_MULTICAST;
+		adapter->packet_filter &= ~ET131X_PACKET_TYPE_MULTICAST;
+	} else
+		adapter->packet_filter |= ET131X_PACKET_TYPE_MULTICAST;
+
+	/* Set values in the private adapter struct */
+	i = 0;
+	netdev_for_each_mc_addr(ha, netdev) {
+		if (i == NIC_MAX_MCAST_LIST)
+			break;
+		memcpy(adapter->multicast_list[i++], ha->addr, ETH_ALEN);
+	}
+	adapter->multicast_addr_count = i;
+
+	/* Are the new flags different from the previous ones? If not, then no
+	 * action is required
+	 *
+	 * NOTE - This block will always update the multicast_list with the
+	 *        hardware, even if the addresses aren't the same.
+	 */
+	if (packet_filter != adapter->packet_filter) {
+		/* Call the device's filter function */
+		et131x_set_packet_filter(adapter);
+	}
+	spin_unlock_irqrestore(&adapter->lock, flags);
+}
+
+/**
+ * et131x_tx - The handler to tx a packet on the device
+ * @skb: data to be Tx'd
+ * @netdev: device on which data is to be Tx'd
+ *
+ * Returns 0 on success, errno on failure (as defined in errno.h)
+ */
+static int et131x_tx(struct sk_buff *skb, struct net_device *netdev)
+{
+	int status = 0;
+
+	/* Save the timestamp for the TX timeout watchdog */
+	netdev->trans_start = jiffies;
+
+	/* Call the device-specific data Tx routine */
+	status = et131x_send_packets(skb, netdev);
+
+	/* Check status and manage the netif queue if necessary */
+	if (status != 0) {
+		if (status == -ENOMEM) {
+			/* Put the queue to sleep until resources are
+			 * available
+			 */
+			netif_stop_queue(netdev);
+			status = NETDEV_TX_BUSY;
+		} else {
+			status = NETDEV_TX_OK;
+		}
+	}
+	return status;
+}
+
+/**
+ * et131x_tx_timeout - Timeout handler
+ * @netdev: a pointer to a net_device struct representing the device
+ *
+ * The handler called when a Tx request times out. The timeout period is
+ * specified by the 'tx_timeo" element in the net_device structure (see
+ * et131x_alloc_device() to see how this value is set).
+ */
+static void et131x_tx_timeout(struct net_device *netdev)
+{
+	struct et131x_adapter *adapter = netdev_priv(netdev);
+	struct tcb *tcb;
+	unsigned long flags;
+
+	/* If the device is closed, ignore the timeout */
+	if (~(adapter->flags & fMP_ADAPTER_INTERRUPT_IN_USE))
+		return;
+
+	/* Any nonrecoverable hardware error?
+	 * Checks adapter->flags for any failure in phy reading
+	 */
+	if (adapter->flags & fMP_ADAPTER_NON_RECOVER_ERROR)
+		return;
+
+	/* Hardware failure? */
+	if (adapter->flags & fMP_ADAPTER_HARDWARE_ERROR) {
+		dev_err(&adapter->pdev->dev, "hardware error - reset\n");
+		return;
+	}
+
+	/* Is send stuck? */
+	spin_lock_irqsave(&adapter->tcb_send_qlock, flags);
+
+	tcb = adapter->tx_ring.send_head;
+
+	if (tcb != NULL) {
+		tcb->count++;
+
+		if (tcb->count > NIC_SEND_HANG_THRESHOLD) {
+			spin_unlock_irqrestore(&adapter->tcb_send_qlock,
+					       flags);
+
+			dev_warn(&adapter->pdev->dev,
+				"Send stuck - reset.  tcb->WrIndex %x, flags 0x%08x\n",
+				tcb->index,
+				tcb->flags);
+
+			adapter->net_stats.tx_errors++;
+
+			/* perform reset of tx/rx */
+			et131x_disable_txrx(netdev);
+			et131x_enable_txrx(netdev);
+			return;
+		}
+	}
+
+	spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags);
+}
+
+/**
+ * et131x_change_mtu - The handler called to change the MTU for the device
+ * @netdev: device whose MTU is to be changed
+ * @new_mtu: the desired MTU
+ *
+ * Returns 0 on success, errno on failure (as defined in errno.h)
+ */
+static int et131x_change_mtu(struct net_device *netdev, int new_mtu)
+{
+	int result = 0;
+	struct et131x_adapter *adapter = netdev_priv(netdev);
+
+	/* Make sure the requested MTU is valid */
+	if (new_mtu < 64 || new_mtu > 9216)
+		return -EINVAL;
+
+	et131x_disable_txrx(netdev);
+	et131x_handle_send_interrupt(adapter);
+	et131x_handle_recv_interrupt(adapter);
+
+	/* Set the new MTU */
+	netdev->mtu = new_mtu;
+
+	/* Free Rx DMA memory */
+	et131x_adapter_memory_free(adapter);
+
+	/* Set the config parameter for Jumbo Packet support */
+	adapter->registry_jumbo_packet = new_mtu + 14;
+	et131x_soft_reset(adapter);
+
+	/* Alloc and init Rx DMA memory */
+	result = et131x_adapter_memory_alloc(adapter);
+	if (result != 0) {
+		dev_warn(&adapter->pdev->dev,
+			"Change MTU failed; couldn't re-alloc DMA memory\n");
+		return result;
+	}
+
+	et131x_init_send(adapter);
+
+	et131x_hwaddr_init(adapter);
+	memcpy(netdev->dev_addr, adapter->addr, ETH_ALEN);
+
+	/* Init the device with the new settings */
+	et131x_adapter_setup(adapter);
+
+	et131x_enable_txrx(netdev);
+
+	return result;
+}
+
+/**
+ * et131x_set_mac_addr - handler to change the MAC address for the device
+ * @netdev: device whose MAC is to be changed
+ * @new_mac: the desired MAC address
+ *
+ * Returns 0 on success, errno on failure (as defined in errno.h)
+ *
+ * IMPLEMENTED BY : blux http://berndlux.de 22.01.2007 21:14
+ */
+static int et131x_set_mac_addr(struct net_device *netdev, void *new_mac)
+{
+	int result = 0;
+	struct et131x_adapter *adapter = netdev_priv(netdev);
+	struct sockaddr *address = new_mac;
+
+	/* begin blux */
+
+	if (adapter == NULL)
+		return -ENODEV;
+
+	/* Make sure the requested MAC is valid */
+	if (!is_valid_ether_addr(address->sa_data))
+		return -EINVAL;
+
+	et131x_disable_txrx(netdev);
+	et131x_handle_send_interrupt(adapter);
+	et131x_handle_recv_interrupt(adapter);
+
+	/* Set the new MAC */
+	/* netdev->set_mac_address  = &new_mac; */
+
+	memcpy(netdev->dev_addr, address->sa_data, netdev->addr_len);
+
+	printk(KERN_INFO "%s: Setting MAC address to %pM\n",
+			netdev->name, netdev->dev_addr);
+
+	/* Free Rx DMA memory */
+	et131x_adapter_memory_free(adapter);
+
+	et131x_soft_reset(adapter);
+
+	/* Alloc and init Rx DMA memory */
+	result = et131x_adapter_memory_alloc(adapter);
+	if (result != 0) {
+		dev_err(&adapter->pdev->dev,
+			"Change MAC failed; couldn't re-alloc DMA memory\n");
+		return result;
+	}
+
+	et131x_init_send(adapter);
+
+	et131x_hwaddr_init(adapter);
+
+	/* Init the device with the new settings */
+	et131x_adapter_setup(adapter);
+
+	et131x_enable_txrx(netdev);
+
+	return result;
+}
+
+static const struct net_device_ops et131x_netdev_ops = {
+	.ndo_open		= et131x_open,
+	.ndo_stop		= et131x_close,
+	.ndo_start_xmit		= et131x_tx,
+	.ndo_set_multicast_list	= et131x_multicast,
+	.ndo_tx_timeout		= et131x_tx_timeout,
+	.ndo_change_mtu		= et131x_change_mtu,
+	.ndo_set_mac_address	= et131x_set_mac_addr,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_get_stats		= et131x_stats,
+	.ndo_do_ioctl		= et131x_ioctl,
+};
+
+/**
+ * et131x_device_alloc
+ *
+ * Returns pointer to the allocated and initialized net_device struct for
+ * this device.
+ *
+ * Create instances of net_device and wl_private for the new adapter and
+ * register the device's entry points in the net_device structure.
+ */
+struct net_device *et131x_device_alloc(void)
+{
+	struct net_device *netdev;
+
+	/* Alloc net_device and adapter structs */
+	netdev = alloc_etherdev(sizeof(struct et131x_adapter));
+
+	if (!netdev) {
+		printk(KERN_ERR "et131x: Alloc of net_device struct failed\n");
+		return NULL;
+	}
+
+	/*
+	 * Setup the function registration table (and other data) for a
+	 * net_device
+	 */
+	netdev->watchdog_timeo = ET131X_TX_TIMEOUT;
+	netdev->netdev_ops     = &et131x_netdev_ops;
+
+	/* Poll? */
+	/* netdev->poll               = &et131x_poll; */
+	/* netdev->poll_controller    = &et131x_poll_controller; */
+	return netdev;
+}
+

drivers/staging/et131x/et131x.h

···
 /*
- * Merged from files
- *
  * Copyright © 2005 Agere Systems Inc.
  * All rights reserved.
  *   http://www.agere.com
···
 
 #define DRIVER_NAME "et131x"
 #define DRIVER_VERSION "v2.0"
+
+/* EEPROM defines */
+
+/* LBCIF Register Groups (addressed via 32-bit offsets) */
+#define LBCIF_DWORD0_GROUP       0xAC
+#define LBCIF_DWORD1_GROUP       0xB0
+
+/* LBCIF Registers (addressed via 8-bit offsets) */
+#define LBCIF_ADDRESS_REGISTER   0xAC
+#define LBCIF_DATA_REGISTER      0xB0
+#define LBCIF_CONTROL_REGISTER   0xB1
+#define LBCIF_STATUS_REGISTER    0xB2
+
+/* LBCIF Control Register Bits */
+#define LBCIF_CONTROL_SEQUENTIAL_READ   0x01
+#define LBCIF_CONTROL_PAGE_WRITE        0x02
+#define LBCIF_CONTROL_EEPROM_RELOAD     0x08
+#define LBCIF_CONTROL_TWO_BYTE_ADDR     0x20
+#define LBCIF_CONTROL_I2C_WRITE         0x40
+#define LBCIF_CONTROL_LBCIF_ENABLE      0x80
+
+/* LBCIF Status Register Bits */
+#define LBCIF_STATUS_PHY_QUEUE_AVAIL    0x01
+#define LBCIF_STATUS_I2C_IDLE           0x02
+#define LBCIF_STATUS_ACK_ERROR          0x04
+#define LBCIF_STATUS_GENERAL_ERROR      0x08
+#define LBCIF_STATUS_CHECKSUM_ERROR     0x40
+#define LBCIF_STATUS_EEPROM_PRESENT     0x80
+
+/* Miscellaneous Constraints */
+#define MAX_NUM_REGISTER_POLLS          1000
+#define MAX_NUM_WRITE_RETRIES           2
+
+/* MAC defines */
+#define COUNTER_WRAP_16_BIT 0x10000
+#define COUNTER_WRAP_12_BIT 0x1000
+
+/* PCI defines */
+#define INTERNAL_MEM_SIZE       0x400	/* 1024 of internal memory */
+#define INTERNAL_MEM_RX_OFFSET  0x1FF	/* 50%   Tx, 50%   Rx */
+
+/* ISR defines */
+/*
+ * For interrupts, normal running is:
+ *       rxdma_xfr_done, phy_interrupt, mac_stat_interrupt,
+ *       watchdog_interrupt & txdma_xfer_done
+ *
+ * In both cases, when flow control is enabled for either Tx or bi-direction,
+ * we additional enable rx_fbr0_low and rx_fbr1_low, so we know when the
+ * buffer rings are running low.
+ */
+#define INT_MASK_DISABLE            0xffffffff
+
+/* NOTE: Masking out MAC_STAT Interrupt for now...
+ * #define INT_MASK_ENABLE             0xfff6bf17
+ * #define INT_MASK_ENABLE_NO_FLOW     0xfff6bfd7
+ */
+#define INT_MASK_ENABLE             0xfffebf17
+#define INT_MASK_ENABLE_NO_FLOW     0xfffebfd7
+
 
 /* et131x_eeprom.c */
 int et131x_init_eeprom(struct et131x_adapter *adapter);

drivers/staging/et131x/et131x_ethtool.c

···
-/*
- *  Copyright (c) 2011 Mark Einon <[e-mail]>
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include "et131x_defs.h"
-
-#include <linux/types.h>
-#include <linux/interrupt.h>
-#include <linux/netdevice.h>
-#include <linux/ethtool.h>
-#include <linux/phy.h>
-#include <linux/pci.h>
-
-#include "et131x_adapter.h"
-#include "et1310_phy.h"
-#include "et131x.h"
-
-static int et131x_get_settings(struct net_device *netdev,
-			       struct ethtool_cmd *cmd)
-{
-	struct et131x_adapter *adapter = netdev_priv(netdev);
-
-	return phy_ethtool_gset(adapter->phydev, cmd);
-}
-
-static int et131x_set_settings(struct net_device *netdev,
-			       struct ethtool_cmd *cmd)
-{
-	struct et131x_adapter *adapter = netdev_priv(netdev);
-
-	return phy_ethtool_sset(adapter->phydev, cmd);
-}
-
-static int et131x_get_regs_len(struct net_device *netdev)
-{
-#define ET131X_REGS_LEN 256
-	return ET131X_REGS_LEN * sizeof(u32);
-}
-
-static void et131x_get_regs(struct net_device *netdev,
-			    struct ethtool_regs *regs, void *regs_data)
-{
-	struct et131x_adapter *adapter = netdev_priv(netdev);
-	struct address_map __iomem *aregs = adapter->regs;
-	u32 *regs_buff = regs_data;
-	u32 num = 0;
-
-	memset(regs_data, 0, et131x_get_regs_len(netdev));
-
-	regs->version = (1 << 24) | (adapter->pdev->revision << 16) |
-			adapter->pdev->device;
-
-	/* PHY regs */
-	et131x_mii_read(adapter, MII_BMCR, (u16 *)&regs_buff[num++]);
-	et131x_mii_read(adapter, MII_BMSR, (u16 *)&regs_buff[num++]);
-	et131x_mii_read(adapter, MII_PHYSID1, (u16 *)&regs_buff[num++]);
-	et131x_mii_read(adapter, MII_PHYSID2, (u16 *)&regs_buff[num++]);
-	et131x_mii_read(adapter, MII_ADVERTISE, (u16 *)&regs_buff[num++]);
-	et131x_mii_read(adapter, MII_LPA, (u16 *)&regs_buff[num++]);
-	et131x_mii_read(adapter, MII_EXPANSION, (u16 *)&regs_buff[num++]);
-	/* Autoneg next page transmit reg */
-	et131x_mii_read(adapter, 0x07, (u16 *)&regs_buff[num++]);
-	/* Link partner next page reg */
-	et131x_mii_read(adapter, 0x08, (u16 *)&regs_buff[num++]);
-	et131x_mii_read(adapter, MII_CTRL1000, (u16 *)&regs_buff[num++]);
-	et131x_mii_read(adapter, MII_STAT1000, (u16 *)&regs_buff[num++]);
-	et131x_mii_read(adapter, MII_ESTATUS, (u16 *)&regs_buff[num++]);
-	et131x_mii_read(adapter, PHY_INDEX_REG, (u16 *)&regs_buff[num++]);
-	et131x_mii_read(adapter, PHY_DATA_REG, (u16 *)&regs_buff[num++]);
-	et131x_mii_read(adapter, PHY_MPHY_CONTROL_REG,
-			(u16 *)&regs_buff[num++]);
-	et131x_mii_read(adapter, PHY_LOOPBACK_CONTROL,
-			(u16 *)&regs_buff[num++]);
-	et131x_mii_read(adapter, PHY_LOOPBACK_CONTROL+1,
-			(u16 *)&regs_buff[num++]);
-	et131x_mii_read(adapter, PHY_REGISTER_MGMT_CONTROL,
-			(u16 *)&regs_buff[num++]);
-	et131x_mii_read(adapter, PHY_CONFIG, (u16 *)&regs_buff[num++]);
-	et131x_mii_read(adapter, PHY_PHY_CONTROL, (u16 *)&regs_buff[num++]);
-	et131x_mii_read(adapter, PHY_INTERRUPT_MASK, (u16 *)&regs_buff[num++]);
-	et131x_mii_read(adapter, PHY_INTERRUPT_STATUS,
-			(u16 *)&regs_buff[num++]);
-	et131x_mii_read(adapter, PHY_PHY_STATUS, (u16 *)&regs_buff[num++]);
-	et131x_mii_read(adapter, PHY_LED_1, (u16 *)&regs_buff[num++]);
-	et131x_mii_read(adapter, PHY_LED_2, (u16 *)&regs_buff[num++]);
-
-	/* Global regs */
-	regs_buff[num++] = readl(&aregs->global.txq_start_addr);
-	regs_buff[num++] = readl(&aregs->global.txq_end_addr);
-	regs_buff[num++] = readl(&aregs->global.rxq_start_addr);
-	regs_buff[num++] = readl(&aregs->global.rxq_end_addr);
-	regs_buff[num++] = readl(&aregs->global.pm_csr);
-	regs_buff[num++] = adapter->stats.interrupt_status;
-	regs_buff[num++] = readl(&aregs->global.int_mask);
-	regs_buff[num++] = readl(&aregs->global.int_alias_clr_en);
-	regs_buff[num++] = readl(&aregs->global.int_status_alias);
-	regs_buff[num++] = readl(&aregs->global.sw_reset);
-	regs_buff[num++] = readl(&aregs->global.slv_timer);
-	regs_buff[num++] = readl(&aregs->global.msi_config);
-	regs_buff[num++] = readl(&aregs->global.loopback);
-	regs_buff[num++] = readl(&aregs->global.watchdog_timer);
-
-	/* TXDMA regs */
-	regs_buff[num++] = readl(&aregs->txdma.csr);
-	regs_buff[num++] = readl(&aregs->txdma.pr_base_hi);
-	regs_buff[num++] = readl(&aregs->txdma.pr_base_lo);
-	regs_buff[num++] = readl(&aregs->txdma.pr_num_des);
-	regs_buff[num++] = readl(&aregs->txdma.txq_wr_addr);
-	regs_buff[num++] = readl(&aregs->txdma.txq_wr_addr_ext);
-	regs_buff[num++] = readl(&aregs->txdma.txq_rd_addr);
-	regs_buff[num++] = readl(&aregs->txdma.dma_wb_base_hi);
-	regs_buff[num++] = readl(&aregs->txdma.dma_wb_base_lo);
-	regs_buff[num++] = readl(&aregs->txdma.service_request);
-	regs_buff[num++] = readl(&aregs->txdma.service_complete);
-	regs_buff[num++] = readl(&aregs->txdma.cache_rd_index);
-	regs_buff[num++] = readl(&aregs->txdma.cache_wr_index);
-	regs_buff[num++] = readl(&aregs->txdma.tx_dma_error);
-	regs_buff[num++] = readl(&aregs->txdma.desc_abort_cnt);
-	regs_buff[num++] = readl(&aregs->txdma.payload_abort_cnt);
-	regs_buff[num++] = readl(&aregs->txdma.writeback_abort_cnt);
-	regs_buff[num++] = readl(&aregs->txdma.desc_timeout_cnt);
-	regs_buff[num++] = readl(&aregs->txdma.payload_timeout_cnt);
-	regs_buff[num++] = readl(&aregs->txdma.writeback_timeout_cnt);
-	regs_buff[num++] = readl(&aregs->txdma.desc_error_cnt);
-	regs_buff[num++] = readl(&aregs->txdma.payload_error_cnt);
-	regs_buff[num++] = readl(&aregs->txdma.writeback_error_cnt);
-	regs_buff[num++] = readl(&aregs->txdma.dropped_tlp_cnt);
-	regs_buff[num++] = readl(&aregs->txdma.new_service_complete);
-	regs_buff[num++] = readl(&aregs->txdma.ethernet_packet_cnt);
-
-	/* RXDMA regs */
-	regs_buff[num++] = readl(&aregs->rxdma.csr);
-	regs_buff[num++] = readl(&aregs->rxdma.dma_wb_base_hi);
-	regs_buff[num++] = readl(&aregs->rxdma.dma_wb_base_lo);
-	regs_buff[num++] = readl(&aregs->rxdma.num_pkt_done);
-	regs_buff[num++] = readl(&aregs->rxdma.max_pkt_time);
-	regs_buff[num++] = readl(&aregs->rxdma.rxq_rd_addr);
-	regs_buff[num++] = readl(&aregs->rxdma.rxq_rd_addr_ext);
-	regs_buff[num++] = readl(&aregs->rxdma.rxq_wr_addr);
-	regs_buff[num++] = readl(&aregs->rxdma.psr_base_hi);
-	regs_buff[num++] = readl(&aregs->rxdma.psr_base_lo);
-	regs_buff[num++] = readl(&aregs->rxdma.psr_num_des);
-	regs_buff[num++] = readl(&aregs->rxdma.psr_avail_offset);
-	regs_buff[num++] = readl(&aregs->rxdma.psr_full_offset);
-	regs_buff[num++] = readl(&aregs->rxdma.psr_access_index);
-	regs_buff[num++] = readl(&aregs->rxdma.psr_min_des);
-	regs_buff[num++] = readl(&aregs->rxdma.fbr0_base_lo);
-	regs_buff[num++] = readl(&aregs->rxdma.fbr0_base_hi);
-	regs_buff[num++] = readl(&aregs->rxdma.fbr0_num_des);
-	regs_buff[num++] = readl(&aregs->rxdma.fbr0_avail_offset);
-	regs_buff[num++] = readl(&aregs->rxdma.fbr0_full_offset);
-	regs_buff[num++] = readl(&aregs->rxdma.fbr0_rd_index);
-	regs_buff[num++] = readl(&aregs->rxdma.fbr0_min_des);
-	regs_buff[num++] = readl(&aregs->rxdma.fbr1_base_lo);
-	regs_buff[num++] = readl(&aregs->rxdma.fbr1_base_hi);
-	regs_buff[num++] = readl(&aregs->rxdma.fbr1_num_des);
-	regs_buff[num++] = readl(&aregs->rxdma.fbr1_avail_offset);
-	regs_buff[num++] = readl(&aregs->rxdma.fbr1_full_offset);
-	regs_buff[num++] = readl(&aregs->rxdma.fbr1_rd_index);
-	regs_buff[num++] = readl(&aregs->rxdma.fbr1_min_des);
-}
-
-#define ET131X_DRVINFO_LEN 32 /* value from ethtool.h */
-static void et131x_get_drvinfo(struct net_device *netdev,
-			       struct ethtool_drvinfo *info)
-{
-	struct et131x_adapter *adapter = netdev_priv(netdev);
-
-	strncpy(info->driver, DRIVER_NAME, ET131X_DRVINFO_LEN);
-	strncpy(info->version, DRIVER_VERSION, ET131X_DRVINFO_LEN);
-	strncpy(info->bus_info, pci_name(adapter->pdev), ET131X_DRVINFO_LEN);
-}
-
-static struct ethtool_ops et131x_ethtool_ops = {
-	.get_settings	= et131x_get_settings,
-	.set_settings	= et131x_set_settings,
-	.get_drvinfo	= et131x_get_drvinfo,
-	.get_regs_len	= et131x_get_regs_len,
-	.get_regs	= et131x_get_regs,
-	.get_link = ethtool_op_get_link,
-};
-
-void et131x_set_ethtool_ops(struct net_device *netdev)
-{
-	SET_ETHTOOL_OPS(netdev, &et131x_ethtool_ops);
-}
-

drivers/staging/et131x/et131x_initpci.c

···
-/*
- * Agere Systems Inc.
- * 10/100/1000 Base-T Ethernet Driver for the ET1310 and ET131x series MACs
- *
- * Copyright © 2005 Agere Systems Inc.
- * All rights reserved.
- *   http://www.agere.com
- *
- * Copyright (c) 2011 Mark Einon <[e-mail]>
- *
- *------------------------------------------------------------------------------
- *
- * et131x_initpci.c - Routines and data used to register the driver with the
- *                    PCI (and PCI Express) subsystem, as well as basic driver
- *                    init and startup.
- *
- *------------------------------------------------------------------------------
- *
- * SOFTWARE LICENSE
- *
- * This software is provided subject to the following terms and conditions,
- * which you should read carefully before using the software.  Using this
- * software indicates your acceptance of these terms and conditions.  If you do
- * not agree with these terms and conditions, do not use the software.
- *
- * Copyright © 2005 Agere Systems Inc.
- * All rights reserved.
- *
- * Redistribution and use in source or binary forms, with or without
- * modifications, are permitted provided that the following conditions are met:
- *
- * . Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following Disclaimer as comments in the code as
- *    well as in the documentation and/or other materials provided with the
- *    distribution.
- *
- * . Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following Disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * . Neither the name of Agere Systems Inc. nor the names of the contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * Disclaimer
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  ANY
- * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN
- * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- */
-
-#include "et131x_defs.h"
-
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-
-#include <linux/sched.h>
-#include <linux/ptrace.h>
-#include <linux/ctype.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/in.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/bitops.h>
-#include <asm/system.h>
-
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/phy.h>
-#include <linux/skbuff.h>
-#include <linux/if_arp.h>
-#include <linux/ioport.h>
-#include <linux/random.h>
-
-#include "et1310_phy.h"
-
-#include "et131x_adapter.h"
-
-#include "et1310_address_map.h"
-#include "et1310_tx.h"
-#include "et1310_rx.h"
-#include "et131x.h"
-
-#define INTERNAL_MEM_SIZE       0x400	/* 1024 of internal memory */
-#define INTERNAL_MEM_RX_OFFSET  0x1FF	/* 50%   Tx, 50%   Rx */
-
-/**
- * et131x_hwaddr_init - set up the MAC Address on the ET1310
- * @adapter: pointer to our private adapter structure
- */
-void et131x_hwaddr_init(struct et131x_adapter *adapter)
-{
-	/* If have our default mac from init and no mac address from
-	 * EEPROM then we need to generate the last octet and set it on the
-	 * device
-	 */
-	if (adapter->rom_addr[0] == 0x00 &&
-	    adapter->rom_addr[1] == 0x00 &&
-	    adapter->rom_addr[2] == 0x00 &&
-	    adapter->rom_addr[3] == 0x00 &&
-	    adapter->rom_addr[4] == 0x00 &&
-	    adapter->rom_addr[5] == 0x00) {
-		/*
-		 * We need to randomly generate the last octet so we
-		 * decrease our chances of setting the mac address to
-		 * same as another one of our cards in the system
-		 */
-		get_random_bytes(&adapter->addr[5], 1);
-		/*
-		 * We have the default value in the register we are
-		 * working with so we need to copy the current
-		 * address into the permanent address
-		 */
-		memcpy(adapter->rom_addr,
-			adapter->addr, ETH_ALEN);
-	} else {
-		/* We do not have an override address, so set the
-		 * current address to the permanent address and add
-		 * it to the device
-		 */
-		memcpy(adapter->addr,
-		       adapter->rom_addr, ETH_ALEN);
-	}
-}
-
-/**
- * et131x_pci_init	 - initial PCI setup
- * @adapter: pointer to our private adapter structure
- * @pdev: our PCI device
- *
- * Perform the initial setup of PCI registers and if possible initialise
- * the MAC address. At this point the I/O registers have yet to be mapped
- */
-static int et131x_pci_init(struct et131x_adapter *adapter,
-						struct pci_dev *pdev)
-{
-	int i;
-	u8 max_payload;
-	u8 read_size_reg;
-
-	if (et131x_init_eeprom(adapter) < 0)
-		return -EIO;
-
-	/* Let's set up the PORT LOGIC Register.  First we need to know what
-	 * the max_payload_size is
-	 */
-	if (pci_read_config_byte(pdev, ET1310_PCI_MAX_PYLD, &max_payload)) {
-		dev_err(&pdev->dev,
-		    "Could not read PCI config space for Max Payload Size\n");
-		return -EIO;
-	}
-
-	/* Program the Ack/Nak latency and replay timers */
-	max_payload &= 0x07;	/* Only the lower 3 bits are valid */
-
-	if (max_payload < 2) {
-		static const u16 acknak[2] = { 0x76, 0xD0 };
-		static const u16 replay[2] = { 0x1E0, 0x2ED };
-
-		if (pci_write_config_word(pdev, ET1310_PCI_ACK_NACK,
-					       acknak[max_payload])) {
-			dev_err(&pdev->dev,
-			  "Could not write PCI config space for ACK/NAK\n");
-			return -EIO;
-		}
-		if (pci_write_config_word(pdev, ET1310_PCI_REPLAY,
-					       replay[max_payload])) {
-			dev_err(&pdev->dev,
-			  "Could not write PCI config space for Replay Timer\n");
-			return -EIO;
-		}
-	}
-
-	/* l0s and l1 latency timers.  We are using default values.
-	 * Representing 001 for L0s and 010 for L1
-	 */
-	if (pci_write_config_byte(pdev, ET1310_PCI_L0L1LATENCY, 0x11)) {
-		dev_err(&pdev->dev,
-		  "Could not write PCI config space for Latency Timers\n");
-		return -EIO;
-	}
-
-	/* Change the max read size to 2k */
-	if (pci_read_config_byte(pdev, 0x51, &read_size_reg)) {
-		dev_err(&pdev->dev,
-			"Could not read PCI config space for Max read size\n");
-		return -EIO;
-	}
-
-	read_size_reg &= 0x8f;
-	read_size_reg |= 0x40;
-
-	if (pci_write_config_byte(pdev, 0x51, read_size_reg)) {
-		dev_err(&pdev->dev,
-		      "Could not write PCI config space for Max read size\n");
-		return -EIO;
-	}
-
-	/* Get MAC address from config space if an eeprom exists, otherwise
-	 * the MAC address there will not be valid
-	 */
-	if (!adapter->has_eeprom) {
-		et131x_hwaddr_init(adapter);
-		return 0;
-	}
-
-	for (i = 0; i < ETH_ALEN; i++) {
-		if (pci_read_config_byte(pdev, ET1310_PCI_MAC_ADDRESS + i,
-					adapter->rom_addr + i)) {
-			dev_err(&pdev->dev, "Could not read PCI config space for MAC address\n");
-			return -EIO;
-		}
-	}
-	memcpy(adapter->addr, adapter->rom_addr, ETH_ALEN);
-	return 0;
-}
-
-/**
- * et131x_error_timer_handler
- * @data: timer-specific variable; here a pointer to our adapter structure
- *
- * The routine called when the error timer expires, to track the number of
- * recurring errors.
- */
-void et131x_error_timer_handler(unsigned long data)
-{
-	struct et131x_adapter *adapter = (struct et131x_adapter *) data;
-	struct phy_device *phydev = adapter->phydev;
-
-	if (et1310_in_phy_coma(adapter)) {
-		/* Bring the device immediately out of coma, to
-		 * prevent it from sleeping indefinitely, this
-		 * mechanism could be improved! */
-		et1310_disable_phy_coma(adapter);
-		adapter->boot_coma = 20;
-	} else {
-		et1310_update_macstat_host_counters(adapter);
-	}
-
-	if (!phydev->link && adapter->boot_coma < 11)
-		adapter->boot_coma++;
-
-	if (adapter->boot_coma == 10) {
-		if (!phydev->link) {
-			if (!et1310_in_phy_coma(adapter)) {
-				/* NOTE - This was originally a 'sync with
-				 *  interrupt'. How to do that under Linux?
-				 */
-				et131x_enable_interrupts(adapter);
-				et1310_enable_phy_coma(adapter);
-			}
-		}
-	}
-
-	/* This is a periodic timer, so reschedule */
-	mod_timer(&adapter->error_timer, jiffies +
-					  TX_ERROR_PERIOD * HZ / 1000);
-}
-
-/**
- * et131x_configure_global_regs	-	configure JAGCore global regs
- * @adapter: pointer to our adapter structure
- *
- * Used to configure the global registers on the JAGCore
- */
-void et131x_configure_global_regs(struct et131x_adapter *adapter)
-{
-	struct global_regs __iomem *regs = &adapter->regs->global;
-
-	writel(0, &regs->rxq_start_addr);
-	writel(INTERNAL_MEM_SIZE - 1, &regs->txq_end_addr);
-
-	if (adapter->registry_jumbo_packet < 2048) {
-		/* Tx / RxDMA and Tx/Rx MAC interfaces have a 1k word
-		 * block of RAM that the driver can split between Tx
-		 * and Rx as it desires.  Our default is to split it
-		 * 50/50:
-		 */
-		writel(PARM_RX_MEM_END_DEF, &regs->rxq_end_addr);
-		writel(PARM_RX_MEM_END_DEF + 1, &regs->txq_start_addr);
-	} else if (adapter->registry_jumbo_packet < 8192) {
-		/* For jumbo packets > 2k but < 8k, split 50-50. */
-		writel(INTERNAL_MEM_RX_OFFSET, &regs->rxq_end_addr);
-		writel(INTERNAL_MEM_RX_OFFSET + 1, &regs->txq_start_addr);
-	} else {
-		/* 9216 is the only packet size greater than 8k that
-		 * is available. The Tx buffer has to be big enough
-		 * for one whole packet on the Tx side. We'll make
-		 * the Tx 9408, and give the rest to Rx
-		 */
-		writel(0x01b3, &regs->rxq_end_addr);
-		writel(0x01b4, &regs->txq_start_addr);
-	}
-
-	/* Initialize the loopback register. Disable all loopbacks. */
-	writel(0, &regs->loopback);
-
-	/* MSI Register */
-	writel(0, &regs->msi_config);
-
-	/* By default, disable the watchdog timer.  It will be enabled when
-	 * a packet is queued.
-	 */
-	writel(0, &regs->watchdog_timer);
-}
-
-/**
- * et131x_adapter_setup - Set the adapter up as per cassini+ documentation
- * @adapter: pointer to our private adapter structure
- *
- * Returns 0 on success, errno on failure (as defined in errno.h)
- */
-void et131x_adapter_setup(struct et131x_adapter *adapter)
-{
-	/* Configure the JAGCore */
-	et131x_configure_global_regs(adapter);
-
-	et1310_config_mac_regs1(adapter);
-
-	/* Configure the MMC registers */
-	/* All we need to do is initialize the Memory Control Register */
-	writel(ET_MMC_ENABLE, &adapter->regs->mmc.mmc_ctrl);
-
-	et1310_config_rxmac_regs(adapter);
-	et1310_config_txmac_regs(adapter);
-
-	et131x_config_rx_dma_regs(adapter);
-	et131x_config_tx_dma_regs(adapter);
-
-	et1310_config_macstat_regs(adapter);
-
-	et1310_phy_power_down(adapter, 0);
-	et131x_xcvr_init(adapter);
-}
-
-/**
- * et131x_soft_reset - Issue a soft reset to the hardware, complete for ET1310
- * @adapter: pointer to our private adapter structure
- */
-void et131x_soft_reset(struct et131x_adapter *adapter)
-{
-	/* Disable MAC Core */
-	writel(0xc00f0000, &adapter->regs->mac.cfg1);
-
-	/* Set everything to a reset value */
-	writel(0x7F, &adapter->regs->global.sw_reset);
-	writel(0x000f0000, &adapter->regs->mac.cfg1);
-	writel(0x00000000, &adapter->regs->mac.cfg1);
-}
-
-/**
- * et131x_align_allocated_memory - Align allocated memory on a given boundary
- * @adapter: pointer to our adapter structure
- * @phys_addr: pointer to Physical address
- * @offset: pointer to the offset variable
- * @mask: correct mask
- */
-void et131x_align_allocated_memory(struct et131x_adapter *adapter,
-				   uint64_t *phys_addr,
-				   uint64_t *offset, uint64_t mask)
-{
-	uint64_t new_addr;
-
-	*offset = 0;
-
-	new_addr = *phys_addr & ~mask;
-
-	if (new_addr != *phys_addr) {
-		/* Move to next aligned block */
-		new_addr += mask + 1;
-		/* Return offset for adjusting virt addr */
-		*offset = new_addr - *phys_addr;
-		/* Return new physical address */
-		*phys_addr = new_addr;
-	}
-}
-
-/**
- * et131x_adapter_memory_alloc
- * @adapter: pointer to our private adapter structure
- *
- * Returns 0 on success, errno on failure (as defined in errno.h).
- *
- * Allocate all the memory blocks for send, receive and others.
- */
-int et131x_adapter_memory_alloc(struct et131x_adapter *adapter)
-{
-	int status;
-
-	/* Allocate memory for the Tx Ring */
-	status = et131x_tx_dma_memory_alloc(adapter);
-	if (status != 0) {
-		dev_err(&adapter->pdev->dev,
-			  "et131x_tx_dma_memory_alloc FAILED\n");
-		return status;
-	}
-	/* Receive buffer memory allocation */
-	status = et131x_rx_dma_memory_alloc(adapter);
-	if (status != 0) {
-		dev_err(&adapter->pdev->dev,
-			  "et131x_rx_dma_memory_alloc FAILED\n");
-		et131x_tx_dma_memory_free(adapter);
-		return status;
-	}
-
-	/* Init receive data structures */
-	status = et131x_init_recv(adapter);
-	if (status != 0) {
-		dev_err(&adapter->pdev->dev,
-			"et131x_init_recv FAILED\n");
-		et131x_tx_dma_memory_free(adapter);
-		et131x_rx_dma_memory_free(adapter);
-	}
-	return status;
-}
-
-/**
- * et131x_adapter_memory_free - Free all memory allocated for use by Tx & Rx
- * @adapter: pointer to our private adapter structure
- */
-void et131x_adapter_memory_free(struct et131x_adapter *adapter)
-{
-	/* Free DMA memory */
-	et131x_tx_dma_memory_free(adapter);
-	et131x_rx_dma_memory_free(adapter);
-}
-
-static void et131x_adjust_link(struct net_device *netdev)
-{
-	struct et131x_adapter *adapter = netdev_priv(netdev);
-	struct  phy_device *phydev = adapter->phydev;
-
-	if (netif_carrier_ok(netdev)) {
-		adapter->boot_coma = 20;
-
-		if (phydev && phydev->speed == SPEED_10) {
-			/*
-			 * NOTE - Is there a way to query this without
-			 * TruePHY?
-			 * && TRU_QueryCoreType(adapter->hTruePhy, 0)==
-			 * EMI_TRUEPHY_A13O) {
-			 */
-			u16 register18;
-
-			et131x_mii_read(adapter, PHY_MPHY_CONTROL_REG,
-					 &register18);
-			et131x_mii_write(adapter, PHY_MPHY_CONTROL_REG,
-					 register18 | 0x4);
-			et131x_mii_write(adapter, PHY_INDEX_REG,
-					 register18 | 0x8402);
-			et131x_mii_write(adapter, PHY_DATA_REG,
-					 register18 | 511);
-			et131x_mii_write(adapter, PHY_MPHY_CONTROL_REG,
-					 register18);
-		}
-
-		et1310_config_flow_control(adapter);
-
-		if (phydev && phydev->speed == SPEED_1000 &&
-				adapter->registry_jumbo_packet > 2048) {
-			u16 reg;
-
-			et131x_mii_read(adapter, PHY_CONFIG, &reg);
-			reg &= ~ET_PHY_CONFIG_TX_FIFO_DEPTH;
-			reg |= ET_PHY_CONFIG_FIFO_DEPTH_32;
-			et131x_mii_write(adapter, PHY_CONFIG, reg);
-		}
-
-		et131x_set_rx_dma_timer(adapter);
-		et1310_config_mac_regs2(adapter);
-	}
-
-	if (phydev && phydev->link != adapter->link) {
-		/*
-		 * Check to see if we are in coma mode and if
-		 * so, disable it because we will not be able
-		 * to read PHY values until we are out.
-		 */
-		if (et1310_in_phy_coma(adapter))
-			et1310_disable_phy_coma(adapter);
-
-		if (phydev->link) {
-			adapter->boot_coma = 20;
-		} else {
-			dev_warn(&adapter->pdev->dev,
-			    "Link down - cable problem ?\n");
-			adapter->boot_coma = 0;
-
-			if (phydev->speed == SPEED_10) {
-				/* NOTE - Is there a way to query this without
-				 * TruePHY?
-				 * && TRU_QueryCoreType(adapter->hTruePhy, 0) ==
-				 * EMI_TRUEPHY_A13O)
-				 */
-				u16 register18;
-
-				et131x_mii_read(adapter, PHY_MPHY_CONTROL_REG,
-						 &register18);
-				et131x_mii_write(adapter, PHY_MPHY_CONTROL_REG,
-						 register18 | 0x4);
-				et131x_mii_write(adapter, PHY_INDEX_REG,
-						 register18 | 0x8402);
-				et131x_mii_write(adapter, PHY_DATA_REG,
-						 register18 | 511);
-				et131x_mii_write(adapter, PHY_MPHY_CONTROL_REG,
-						 register18);
-			}
-
-			/* Free the packets being actively sent & stopped */
-			et131x_free_busy_send_packets(adapter);
-
-			/* Re-initialize the send structures */
-			et131x_init_send(adapter);
-
-			/* Reset the RFD list and re-start RU */
-			et131x_reset_recv(adapter);
-
-			/*
-			 * Bring the device back to the state it was during
-			 * init prior to autonegotiation being complete. This
-			 * way, when we get the auto-neg complete interrupt,
-			 * we can complete init by calling config_mac_regs2.
-			 */
-			et131x_soft_reset(adapter);
-
-			/* Setup ET1310 as per the documentation */
-			et131x_adapter_setup(adapter);
-
-			/* perform reset of tx/rx */
-			et131x_disable_txrx(netdev);
-			et131x_enable_txrx(netdev);
-		}
-
-		adapter->link = phydev->link;
-
-		phy_print_status(phydev);
-	}
-}
-
-static int et131x_mii_probe(struct net_device *netdev)
-{
-	struct et131x_adapter *adapter = netdev_priv(netdev);
-	struct  phy_device *phydev = NULL;
-
-	phydev = phy_find_first(adapter->mii_bus);
-	if (!phydev) {
-		dev_err(&adapter->pdev->dev, "no PHY found\n");
-		return -ENODEV;
-	}
-
-	phydev = phy_connect(netdev, dev_name(&phydev->dev),
-			&et131x_adjust_link, 0, PHY_INTERFACE_MODE_MII);
-
-	if (IS_ERR(phydev)) {
-		dev_err(&adapter->pdev->dev, "Could not attach to PHY\n");
-		return PTR_ERR(phydev);
-	}
-
-	phydev->supported &= (SUPPORTED_10baseT_Half
-				| SUPPORTED_10baseT_Full
-				| SUPPORTED_100baseT_Half
-				| SUPPORTED_100baseT_Full
-				| SUPPORTED_Autoneg
-				| SUPPORTED_MII
-				| SUPPORTED_TP);
-
-	if (adapter->pdev->device != ET131X_PCI_DEVICE_ID_FAST)
-		phydev->supported |= SUPPORTED_1000baseT_Full;
-
-	phydev->advertising = phydev->supported;
-	adapter->phydev = phydev;
-
-	dev_info(&adapter->pdev->dev, "attached PHY driver [%s] "
-		 "(mii_bus:phy_addr=%s)\n",
-		 phydev->drv->name, dev_name(&phydev->dev));
-
-	return 0;
-}
-
-/**
- * et131x_adapter_init
- * @adapter: pointer to the private adapter struct
- * @pdev: pointer to the PCI device
- *
- * Initialize the data structures for the et131x_adapter object and link
- * them together with the platform provided device structures.
- */
-static struct et131x_adapter *et131x_adapter_init(struct net_device *netdev,
-		struct pci_dev *pdev)
-{
-	static const u8 default_mac[] = { 0x00, 0x05, 0x3d, 0x00, 0x02, 0x00 };
-
-	struct et131x_adapter *adapter;
-
-	/* Allocate private adapter struct and copy in relevant information */
-	adapter = netdev_priv(netdev);
-	adapter->pdev = pci_dev_get(pdev);
-	adapter->netdev = netdev;
-
-	/* Do the same for the netdev struct */
-	netdev->irq = pdev->irq;
-	netdev->base_addr = pci_resource_start(pdev, 0);
-
-	/* Initialize spinlocks here */
-	spin_lock_init(&adapter->lock);
-	spin_lock_init(&adapter->tcb_send_qlock);
-	spin_lock_init(&adapter->tcb_ready_qlock);
-	spin_lock_init(&adapter->send_hw_lock);
-	spin_lock_init(&adapter->rcv_lock);
-	spin_lock_init(&adapter->rcv_pend_lock);
-	spin_lock_init(&adapter->fbr_lock);
-	spin_lock_init(&adapter->phy_lock);
-
-	adapter->registry_jumbo_packet = 1514;	/* 1514-9216 */
-
-	/* Set the MAC address to a default */
-	memcpy(adapter->addr, default_mac, ETH_ALEN);
-
-	return adapter;
-}
-
-/**
- * et131x_pci_setup - Perform device initialization
- * @pdev: a pointer to the device's pci_dev structure
- * @ent: this device's entry in the pci_device_id table
- *
- * Returns 0 on success, errno on failure (as defined in errno.h)
- *
- * Registered in the pci_driver structure, this function is called when the
- * PCI subsystem finds a new PCI device which matches the information
- * contained in the pci_device_id table. This routine is the equivalent to
- * a device insertion routine.
- */
-static int __devinit et131x_pci_setup(struct pci_dev *pdev,
-			       const struct pci_device_id *ent)
-{
-	int result;
-	int pm_cap;
-	struct net_device *netdev;
-	struct et131x_adapter *adapter;
-	int ii;
-
-	result = pci_enable_device(pdev);
-	if (result) {
-		dev_err(&pdev->dev, "pci_enable_device() failed\n");
-		goto err_out;
-	}
-
-	/* Perform some basic PCI checks */
-	if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
-		dev_err(&pdev->dev, "Can't find PCI device's base address\n");
-		goto err_disable;
-	}
-
-	if (pci_request_regions(pdev, DRIVER_NAME)) {
-		dev_err(&pdev->dev, "Can't get PCI resources\n");
-		goto err_disable;
-	}
-
-	pci_set_master(pdev);
-
-	/* Query PCI for Power Mgmt Capabilities
-	 *
-	 * NOTE: Now reading PowerMgmt in another location; is this still
-	 * needed?
-	 */
-	pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM);
-	if (!pm_cap) {
-		dev_err(&pdev->dev,
-			  "Cannot find Power Management capabilities\n");
-		result = -EIO;
-		goto err_release_res;
-	}
-
-	/* Check the DMA addressing support of this device */
-	if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
-		result = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
-		if (result) {
-			dev_err(&pdev->dev,
-			  "Unable to obtain 64 bit DMA for consistent allocations\n");
-			goto err_release_res;
-		}
-	} else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
-		result = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
-		if (result) {
-			dev_err(&pdev->dev,
-			  "Unable to obtain 32 bit DMA for consistent allocations\n");
-			goto err_release_res;
-		}
-	} else {
-		dev_err(&pdev->dev, "No usable DMA addressing method\n");
-		result = -EIO;
-		goto err_release_res;
-	}
-
-	/* Allocate netdev and private adapter structs */
-	netdev = et131x_device_alloc();
-	if (!netdev) {
-		dev_err(&pdev->dev, "Couldn't alloc netdev struct\n");
-		result = -ENOMEM;
-		goto err_release_res;
-	}
-
-	SET_NETDEV_DEV(netdev, &pdev->dev);
-	et131x_set_ethtool_ops(netdev);
-
-	adapter = et131x_adapter_init(netdev, pdev);
-
-	/* Initialise the PCI setup for the device */
-	et131x_pci_init(adapter, pdev);
-
-	/* Map the bus-relative registers to system virtual memory */
-	adapter->regs = pci_ioremap_bar(pdev, 0);
-	if (!adapter->regs) {
-		dev_err(&pdev->dev, "Cannot map device registers\n");
-		result = -ENOMEM;
-		goto err_free_dev;
-	}
-
-	/* If Phy COMA mode was enabled when we went down, disable it here. */
-	writel(ET_PMCSR_INIT,  &adapter->regs->global.pm_csr);
-
-	/* Issue a global reset to the et1310 */
-	et131x_soft_reset(adapter);
-
-	/* Disable all interrupts (paranoid) */
-	et131x_disable_interrupts(adapter);
-
-	/* Allocate DMA memory */
-	result = et131x_adapter_memory_alloc(adapter);
-	if (result) {
-		dev_err(&pdev->dev, "Could not alloc adapater memory (DMA)\n");
-		goto err_iounmap;
-	}
-
-	/* Init send data structures */
-	et131x_init_send(adapter);
-
-	/* Set up the task structure for the ISR's deferred handler */
-	INIT_WORK(&adapter->task, et131x_isr_handler);
-
-	/* Copy address into the net_device struct */
-	memcpy(netdev->dev_addr, adapter->addr, ETH_ALEN);
-
-	/* Init variable for counting how long we do not have link status */
-	adapter->boot_coma = 0;
-	et1310_disable_phy_coma(adapter);
-
-	/* Setup the mii_bus struct */
-	adapter->mii_bus = mdiobus_alloc();
-	if (!adapter->mii_bus) {
-		dev_err(&pdev->dev, "Alloc of mii_bus struct failed\n");
-		goto err_mem_free;
-	}
-
-	adapter->mii_bus->name = "et131x_eth_mii";
-	snprintf(adapter->mii_bus->id, MII_BUS_ID_SIZE, "%x",
-		(adapter->pdev->bus->number << 8) | adapter->pdev->devfn);
-	adapter->mii_bus->priv = netdev;
-	adapter->mii_bus->read = et131x_mdio_read;
-	adapter->mii_bus->write = et131x_mdio_write;
-	adapter->mii_bus->reset = et131x_mdio_reset;
-	adapter->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
-	if (!adapter->mii_bus->irq) {
-		dev_err(&pdev->dev, "mii_bus irq allocation failed\n");
-		goto err_mdio_free;
-	}
-
-	for (ii = 0; ii < PHY_MAX_ADDR; ii++)
-		adapter->mii_bus->irq[ii] = PHY_POLL;
-
-	if (mdiobus_register(adapter->mii_bus)) {
-		dev_err(&pdev->dev, "failed to register MII bus\n");
-		mdiobus_free(adapter->mii_bus);
-		goto err_mdio_free_irq;
-	}
-
-	if (et131x_mii_probe(netdev)) {
-		dev_err(&pdev->dev, "failed to probe MII bus\n");
-		goto err_mdio_unregister;
-	}
-
-	/* Setup et1310 as per the documentation */
-	et131x_adapter_setup(adapter);
-
-	/* We can enable interrupts now
-	 *
-	 *  NOTE - Because registration of interrupt handler is done in the
-	 *         device's open(), defer enabling device interrupts to that
-	 *         point
-	 */
-
-	/* Register the net_device struct with the Linux network layer */
-	result = register_netdev(netdev);
-	if (result != 0) {
-		dev_err(&pdev->dev, "register_netdev() failed\n");
-		goto err_mdio_unregister;
-	}
-
-	/* Register the net_device struct with the PCI subsystem. Save a copy
-	 * of the PCI config space for this device now that the device has
-	 * been initialized, just in case it needs to be quickly restored.
-	 */
-	pci_set_drvdata(pdev, netdev);
-	pci_save_state(adapter->pdev);
-
-	return result;
-
-err_mdio_unregister:
-	mdiobus_unregister(adapter->mii_bus);
-err_mdio_free_irq:
-	kfree(adapter->mii_bus->irq);
-err_mdio_free:
-	mdiobus_free(adapter->mii_bus);
-err_mem_free:
-	et131x_adapter_memory_free(adapter);
-err_iounmap:
-	iounmap(adapter->regs);
-err_free_dev:
-	pci_dev_put(pdev);
-	free_netdev(netdev);
-err_release_res:
-	pci_release_regions(pdev);
-err_disable:
-	pci_disable_device(pdev);
-err_out:
-	return result;
-}
-
-/**
- * et131x_pci_remove
- * @pdev: a pointer to the device's pci_dev structure
- *
- * Registered in the pci_driver structure, this function is called when the
- * PCI subsystem detects that a PCI device which matches the information
- * contained in the pci_device_id table has been removed.
- */
-static void __devexit et131x_pci_remove(struct pci_dev *pdev)
-{
-	struct net_device *netdev = pci_get_drvdata(pdev);
-	struct et131x_adapter *adapter = netdev_priv(netdev);
-
-	unregister_netdev(netdev);
-	mdiobus_unregister(adapter->mii_bus);
-	kfree(adapter->mii_bus->irq);
-	mdiobus_free(adapter->mii_bus);
-
-	et131x_adapter_memory_free(adapter);
-	iounmap(adapter->regs);
-	pci_dev_put(pdev);
-
-	free_netdev(netdev);
-	pci_release_regions(pdev);
-	pci_disable_device(pdev);
-}
-
-#ifdef CONFIG_PM_SLEEP
-static int et131x_suspend(struct device *dev)
-{
-	struct pci_dev *pdev = to_pci_dev(dev);
-	struct net_device *netdev = pci_get_drvdata(pdev);
-
-	if (netif_running(netdev)) {
-		netif_device_detach(netdev);
-		et131x_down(netdev);
-		pci_save_state(pdev);
-	}
-
-	return 0;
-}
-
-static int et131x_resume(struct device *dev)
-{
-	struct pci_dev *pdev = to_pci_dev(dev);
-	struct net_device *netdev = pci_get_drvdata(pdev);
-
-	if (netif_running(netdev)) {
-		pci_restore_state(pdev);
-		et131x_up(netdev);
-		netif_device_attach(netdev);
-	}
-
-	return 0;
-}
-
-static SIMPLE_DEV_PM_OPS(et131x_pm_ops, et131x_suspend, et131x_resume);
-#define ET131X_PM_OPS (&et131x_pm_ops)
-#else
-#define ET131X_PM_OPS NULL
-#endif
-
-static struct pci_device_id et131x_pci_table[] __devinitdata = {
-	{ET131X_PCI_VENDOR_ID, ET131X_PCI_DEVICE_ID_GIG, PCI_ANY_ID,
-	 PCI_ANY_ID, 0, 0, 0UL},
-	{ET131X_PCI_VENDOR_ID, ET131X_PCI_DEVICE_ID_FAST, PCI_ANY_ID,
-	 PCI_ANY_ID, 0, 0, 0UL},
-	{0,}
-};
-
-MODULE_DEVICE_TABLE(pci, et131x_pci_table);
-
-static struct pci_driver et131x_driver = {
-	.name		= DRIVER_NAME,
-	.id_table	= et131x_pci_table,
-	.probe		= et131x_pci_setup,
-	.remove		= __devexit_p(et131x_pci_remove),
-	.driver.pm	= ET131X_PM_OPS,
-};
-
-/**
- * et131x_init_module - The "main" entry point called on driver initialization
- *
- * Returns 0 on success, errno on failure (as defined in errno.h)
- */
-static int __init et131x_init_module(void)
-{
-	return pci_register_driver(&et131x_driver);
-}
-
-/**
- * et131x_cleanup_module - The entry point called on driver cleanup
- */
-static void __exit et131x_cleanup_module(void)
-{
-	pci_unregister_driver(&et131x_driver);
-}
-
-module_init(et131x_init_module);
-module_exit(et131x_cleanup_module);
-
-MODULE_AUTHOR("Victor Soriano <[e-mail]>");
-MODULE_AUTHOR("Mark Einon <[e-mail]>");
-MODULE_LICENSE("Dual BSD/GPL");
-MODULE_DESCRIPTION("10/100/1000 Base-T Ethernet Driver "
-		   "for the ET1310 by Agere Systems");

drivers/staging/et131x/et131x_isr.c

···
-/*
- * Agere Systems Inc.
- * 10/100/1000 Base-T Ethernet Driver for the ET1301 and ET131x series MACs
- *
- * Copyright © 2005 Agere Systems Inc.
- * All rights reserved.
- *   http://www.agere.com
- *
- * Copyright (c) 2011 Mark Einon <[e-mail]>
- *
- *------------------------------------------------------------------------------
- *
- * et131x_isr.c - File which contains the ISR, ISR handler, and related routines
- *                for processing interrupts from the device.
- *
- *------------------------------------------------------------------------------
- *
- * SOFTWARE LICENSE
- *
- * This software is provided subject to the following terms and conditions,
- * which you should read carefully before using the software.  Using this
- * software indicates your acceptance of these terms and conditions.  If you do
- * not agree with these terms and conditions, do not use the software.
- *
- * Copyright © 2005 Agere Systems Inc.
- * All rights reserved.
- *
- * Redistribution and use in source or binary forms, with or without
- * modifications, are permitted provided that the following conditions are met:
- *
- * . Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following Disclaimer as comments in the code as
- *    well as in the documentation and/or other materials provided with the
- *    distribution.
- *
- * . Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following Disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * . Neither the name of Agere Systems Inc. nor the names of the contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * Disclaimer
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  ANY
- * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN
- * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- */
-
-#include "et131x_defs.h"
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-
-#include <linux/sched.h>
-#include <linux/ptrace.h>
-#include <linux/ctype.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/in.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/bitops.h>
-#include <linux/pci.h>
-#include <asm/system.h>
-
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/if_arp.h>
-#include <linux/ioport.h>
-
-#include "et1310_phy.h"
-#include "et131x_adapter.h"
-#include "et131x.h"
-
-/*
- * For interrupts, normal running is:
- *       rxdma_xfr_done, phy_interrupt, mac_stat_interrupt,
- *       watchdog_interrupt & txdma_xfer_done
- *
- * In both cases, when flow control is enabled for either Tx or bi-direction,
- * we additional enable rx_fbr0_low and rx_fbr1_low, so we know when the
- * buffer rings are running low.
- */
-#define INT_MASK_DISABLE            0xffffffff
-
-/* NOTE: Masking out MAC_STAT Interrupt for now...
- * #define INT_MASK_ENABLE             0xfff6bf17
- * #define INT_MASK_ENABLE_NO_FLOW     0xfff6bfd7
- */
-#define INT_MASK_ENABLE             0xfffebf17
-#define INT_MASK_ENABLE_NO_FLOW     0xfffebfd7
-
-
-/**
- *	et131x_enable_interrupts	-	enable interrupt
- *	@adapter: et131x device
- *
- *	Enable the appropriate interrupts on the ET131x according to our
- *	configuration
- */
-
-void et131x_enable_interrupts(struct et131x_adapter *adapter)
-{
-	u32 mask;
-
-	/* Enable all global interrupts */
-	if (adapter->flowcontrol == FLOW_TXONLY ||
-			    adapter->flowcontrol == FLOW_BOTH)
-		mask = INT_MASK_ENABLE;
-	else
-		mask = INT_MASK_ENABLE_NO_FLOW;
-
-	writel(mask, &adapter->regs->global.int_mask);
-}
-
-/**
- *	et131x_disable_interrupts	-	interrupt disable
- *	@adapter: et131x device
- *
- *	Block all interrupts from the et131x device at the device itself
- */
-
-void et131x_disable_interrupts(struct et131x_adapter *adapter)
-{
-	/* Disable all global interrupts */
-	writel(INT_MASK_DISABLE, &adapter->regs->global.int_mask);
-}
-
-
-/**
- * et131x_isr - The Interrupt Service Routine for the driver.
- * @irq: the IRQ on which the interrupt was received.
- * @dev_id: device-specific info (here a pointer to a net_device struct)
- *
- * Returns a value indicating if the interrupt was handled.
- */
-
-irqreturn_t et131x_isr(int irq, void *dev_id)
-{
-	bool handled = true;
-	struct net_device *netdev = (struct net_device *)dev_id;
-	struct et131x_adapter *adapter = NULL;
-	u32 status;
-
-	if (!netif_device_present(netdev)) {
-		handled = false;
-		goto out;
-	}
-
-	adapter = netdev_priv(netdev);
-
-	/* If the adapter is in low power state, then it should not
-	 * recognize any interrupt
-	 */
-
-	/* Disable Device Interrupts */
-	et131x_disable_interrupts(adapter);
-
-	/* Get a copy of the value in the interrupt status register
-	 * so we can process the interrupting section
-	 */
-	status = readl(&adapter->regs->global.int_status);
-
-	if (adapter->flowcontrol == FLOW_TXONLY ||
-	    adapter->flowcontrol == FLOW_BOTH) {
-		status &= ~INT_MASK_ENABLE;
-	} else {
-		status &= ~INT_MASK_ENABLE_NO_FLOW;
-	}
-
-	/* Make sure this is our interrupt */
-	if (!status) {
-		handled = false;
-		et131x_enable_interrupts(adapter);
-		goto out;
-	}
-
-	/* This is our interrupt, so process accordingly */
-
-	if (status & ET_INTR_WATCHDOG) {
-		struct tcb *tcb = adapter->tx_ring.send_head;
-
-		if (tcb)
-			if (++tcb->stale > 1)
-				status |= ET_INTR_TXDMA_ISR;
-
-		if (adapter->rx_ring.unfinished_receives)
-			status |= ET_INTR_RXDMA_XFR_DONE;
-		else if (tcb == NULL)
-			writel(0, &adapter->regs->global.watchdog_timer);
-
-		status &= ~ET_INTR_WATCHDOG;
-	}
-
-	if (status == 0) {
-		/* This interrupt has in some way been "handled" by
-		 * the ISR. Either it was a spurious Rx interrupt, or
-		 * it was a Tx interrupt that has been filtered by
-		 * the ISR.
-		 */
-		et131x_enable_interrupts(adapter);
-		goto out;
-	}
-
-	/* We need to save the interrupt status value for use in our
-	 * DPC. We will clear the software copy of that in that
-	 * routine.
-	 */
-	adapter->stats.interrupt_status = status;
-
-	/* Schedule the ISR handler as a bottom-half task in the
-	 * kernel's tq_immediate queue, and mark the queue for
-	 * execution
-	 */
-	schedule_work(&adapter->task);
-out:
-	return IRQ_RETVAL(handled);
-}
-
-/**
- * et131x_isr_handler - The ISR handler
- * @p_adapter, a pointer to the device's private adapter structure
- *
- * scheduled to run in a deferred context by the ISR. This is where the ISR's
- * work actually gets done.
- */
-void et131x_isr_handler(struct work_struct *work)
-{
-	struct et131x_adapter *adapter =
-		container_of(work, struct et131x_adapter, task);
-	u32 status = adapter->stats.interrupt_status;
-	struct address_map __iomem *iomem = adapter->regs;
-
-	/*
-	 * These first two are by far the most common.  Once handled, we clear
-	 * their two bits in the status word.  If the word is now zero, we
-	 * exit.
-	 */
-	/* Handle all the completed Transmit interrupts */
-	if (status & ET_INTR_TXDMA_ISR)
-		et131x_handle_send_interrupt(adapter);
-
-	/* Handle all the completed Receives interrupts */
-	if (status & ET_INTR_RXDMA_XFR_DONE)
-		et131x_handle_recv_interrupt(adapter);
-
-	status &= 0xffffffd7;
-
-	if (status) {
-		/* Handle the TXDMA Error interrupt */
-		if (status & ET_INTR_TXDMA_ERR) {
-			u32 txdma_err;
-
-			/* Following read also clears the register (COR) */
-			txdma_err = readl(&iomem->txdma.tx_dma_error);
-
-			dev_warn(&adapter->pdev->dev,
-				    "TXDMA_ERR interrupt, error = %d\n",
-				    txdma_err);
-		}
-
-		/* Handle Free Buffer Ring 0 and 1 Low interrupt */
-		if (status &
-		    (ET_INTR_RXDMA_FB_R0_LOW | ET_INTR_RXDMA_FB_R1_LOW)) {
-			/*
-			 * This indicates the number of unused buffers in
-			 * RXDMA free buffer ring 0 is <= the limit you
-			 * programmed. Free buffer resources need to be
-			 * returned.  Free buffers are consumed as packets
-			 * are passed from the network to the host. The host
-			 * becomes aware of the packets from the contents of
-			 * the packet status ring. This ring is queried when
-			 * the packet done interrupt occurs. Packets are then
-			 * passed to the OS. When the OS is done with the
-			 * packets the resources can be returned to the
-			 * ET1310 for re-use. This interrupt is one method of
-			 * returning resources.
-			 */
-
-			/* If the user has flow control on, then we will
-			 * send a pause packet, otherwise just exit
-			 */
-			if (adapter->flowcontrol == FLOW_TXONLY ||
-			    adapter->flowcontrol == FLOW_BOTH) {
-				u32 pm_csr;
-
-				/* Tell the device to send a pause packet via
-				 * the back pressure register (bp req  and
-				 * bp xon/xoff)
-				 */
-				pm_csr = readl(&iomem->global.pm_csr);
-				if (!et1310_in_phy_coma(adapter))
-					writel(3, &iomem->txmac.bp_ctrl);
-			}
-		}
-
-		/* Handle Packet Status Ring Low Interrupt */
-		if (status & ET_INTR_RXDMA_STAT_LOW) {
-
-			/*
-			 * Same idea as with the two Free Buffer Rings.
-			 * Packets going from the network to the host each
-			 * consume a free buffer resource and a packet status
-			 * resource.  These resoures are passed to the OS.
-			 * When the OS is done with the resources, they need
-			 * to be returned to the ET1310. This is one method
-			 * of returning the resources.
-			 */
-		}
-
-		/* Handle RXDMA Error Interrupt */
-		if (status & ET_INTR_RXDMA_ERR) {
-			/*
-			 * The rxdma_error interrupt is sent when a time-out
-			 * on a request issued by the JAGCore has occurred or
-			 * a completion is returned with an un-successful
-			 * status.  In both cases the request is considered
-			 * complete. The JAGCore will automatically re-try the
-			 * request in question. Normally information on events
-			 * like these are sent to the host using the "Advanced
-			 * Error Reporting" capability. This interrupt is
-			 * another way of getting similar information. The
-			 * only thing required is to clear the interrupt by
-			 * reading the ISR in the global resources. The
-			 * JAGCore will do a re-try on the request.  Normally
-			 * you should never see this interrupt. If you start
-			 * to see this interrupt occurring frequently then
-			 * something bad has occurred. A reset might be the
-			 * thing to do.
-			 */
-			/* TRAP();*/
-
-			dev_warn(&adapter->pdev->dev,
-				    "RxDMA_ERR interrupt, error %x\n",
-				    readl(&iomem->txmac.tx_test));
-		}
-
-		/* Handle the Wake on LAN Event */
-		if (status & ET_INTR_WOL) {
-			/*
-			 * This is a secondary interrupt for wake on LAN.
-			 * The driver should never see this, if it does,
-			 * something serious is wrong. We will TRAP the
-			 * message when we are in DBG mode, otherwise we
-			 * will ignore it.
-			 */
-			dev_err(&adapter->pdev->dev, "WAKE_ON_LAN interrupt\n");
-		}
-
-		/* Let's move on to the TxMac */
-		if (status & ET_INTR_TXMAC) {
-			u32 err = readl(&iomem->txmac.err);
-
-			/*
-			 * When any of the errors occur and TXMAC generates
-			 * an interrupt to report these errors, it usually
-			 * means that TXMAC has detected an error in the data
-			 * stream retrieved from the on-chip Tx Q. All of
-			 * these errors are catastrophic and TXMAC won't be
-			 * able to recover data when these errors occur.  In
-			 * a nutshell, the whole Tx path will have to be reset
-			 * and re-configured afterwards.
-			 */
-			dev_warn(&adapter->pdev->dev,
-				    "TXMAC interrupt, error 0x%08x\n",
-				    err);
-
-			/* If we are debugging, we want to see this error,
-			 * otherwise we just want the device to be reset and
-			 * continue
-			 */
-		}
-
-		/* Handle RXMAC Interrupt */
-		if (status & ET_INTR_RXMAC) {
-			/*
-			 * These interrupts are catastrophic to the device,
-			 * what we need to do is disable the interrupts and
-			 * set the flag to cause us to reset so we can solve
-			 * this issue.
-			 */
-			/* MP_SET_FLAG( adapter,
-						fMP_ADAPTER_HARDWARE_ERROR); */
-
-			dev_warn(&adapter->pdev->dev,
-			  "RXMAC interrupt, error 0x%08x.  Requesting reset\n",
-				    readl(&iomem->rxmac.err_reg));
-
-			dev_warn(&adapter->pdev->dev,
-				    "Enable 0x%08x, Diag 0x%08x\n",
-				    readl(&iomem->rxmac.ctrl),
-				    readl(&iomem->rxmac.rxq_diag));
-
-			/*
-			 * If we are debugging, we want to see this error,
-			 * otherwise we just want the device to be reset and
-			 * continue
-			 */
-		}
-
-		/* Handle MAC_STAT Interrupt */
-		if (status & ET_INTR_MAC_STAT) {
-			/*
-			 * This means at least one of the un-masked counters
-			 * in the MAC_STAT block has rolled over.  Use this
-			 * to maintain the top, software managed bits of the
-			 * counter(s).
-			 */
-			et1310_handle_macstat_interrupt(adapter);
-		}
-
-		/* Handle SLV Timeout Interrupt */
-		if (status & ET_INTR_SLV_TIMEOUT) {
-			/*
-			 * This means a timeout has occurred on a read or
-			 * write request to one of the JAGCore registers. The
-			 * Global Resources block has terminated the request
-			 * and on a read request, returned a "fake" value.
-			 * The most likely reasons are: Bad Address or the
-			 * addressed module is in a power-down state and
-			 * can't respond.
-			 */
-		}
-	}
-	et131x_enable_interrupts(adapter);
-}

drivers/staging/et131x/et131x_netdev.c

···
-/*
- * Agere Systems Inc.
- * 10/100/1000 Base-T Ethernet Driver for the ET1310 and ET131x series MACs
- *
- * Copyright © 2005 Agere Systems Inc.
- * All rights reserved.
- *   http://www.agere.com
- *
- * Copyright (c) 2011 Mark Einon <[e-mail]>
- *
- *------------------------------------------------------------------------------
- *
- * et131x_netdev.c - Routines and data required by all Linux network devices.
- *
- *------------------------------------------------------------------------------
- *
- * SOFTWARE LICENSE
- *
- * This software is provided subject to the following terms and conditions,
- * which you should read carefully before using the software.  Using this
- * software indicates your acceptance of these terms and conditions.  If you do
- * not agree with these terms and conditions, do not use the software.
- *
- * Copyright © 2005 Agere Systems Inc.
- * All rights reserved.
- *
- * Redistribution and use in source or binary forms, with or without
- * modifications, are permitted provided that the following conditions are met:
- *
- * . Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following Disclaimer as comments in the code as
- *    well as in the documentation and/or other materials provided with the
- *    distribution.
- *
- * . Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following Disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * . Neither the name of Agere Systems Inc. nor the names of the contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * Disclaimer
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  ANY
- * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN
- * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- */
-
-#include "et131x_defs.h"
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-
-#include <linux/sched.h>
-#include <linux/ptrace.h>
-#include <linux/ctype.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/in.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/bitops.h>
-#include <linux/pci.h>
-#include <asm/system.h>
-
-#include <linux/mii.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/if_arp.h>
-#include <linux/ioport.h>
-#include <linux/phy.h>
-
-#include "et1310_phy.h"
-#include "et1310_tx.h"
-#include "et131x_adapter.h"
-#include "et131x.h"
-
-/**
- * et131x_stats - Return the current device statistics.
- * @netdev: device whose stats are being queried
- *
- * Returns 0 on success, errno on failure (as defined in errno.h)
- */
-static struct net_device_stats *et131x_stats(struct net_device *netdev)
-{
-	struct et131x_adapter *adapter = netdev_priv(netdev);
-	struct net_device_stats *stats = &adapter->net_stats;
-	struct ce_stats *devstat = &adapter->stats;
-
-	stats->rx_errors = devstat->rx_length_errs +
-			   devstat->rx_align_errs +
-			   devstat->rx_crc_errs +
-			   devstat->rx_code_violations +
-			   devstat->rx_other_errs;
-	stats->tx_errors = devstat->tx_max_pkt_errs;
-	stats->multicast = devstat->multicast_pkts_rcvd;
-	stats->collisions = devstat->tx_collisions;
-
-	stats->rx_length_errors = devstat->rx_length_errs;
-	stats->rx_over_errors = devstat->rx_overflows;
-	stats->rx_crc_errors = devstat->rx_crc_errs;
-
-	/* NOTE: These stats don't have corresponding values in CE_STATS,
-	 * so we're going to have to update these directly from within the
-	 * TX/RX code
-	 */
-	/* stats->rx_bytes            = 20; devstat->; */
-	/* stats->tx_bytes            = 20;  devstat->; */
-	/* stats->rx_dropped          = devstat->; */
-	/* stats->tx_dropped          = devstat->; */
-
-	/*  NOTE: Not used, can't find analogous statistics */
-	/* stats->rx_frame_errors     = devstat->; */
-	/* stats->rx_fifo_errors      = devstat->; */
-	/* stats->rx_missed_errors    = devstat->; */
-
-	/* stats->tx_aborted_errors   = devstat->; */
-	/* stats->tx_carrier_errors   = devstat->; */
-	/* stats->tx_fifo_errors      = devstat->; */
-	/* stats->tx_heartbeat_errors = devstat->; */
-	/* stats->tx_window_errors    = devstat->; */
-	return stats;
-}
-
-/**
- * et131x_enable_txrx - Enable tx/rx queues
- * @netdev: device to be enabled
- */
-void et131x_enable_txrx(struct net_device *netdev)
-{
-	struct et131x_adapter *adapter = netdev_priv(netdev);
-
-	/* Enable the Tx and Rx DMA engines (if not already enabled) */
-	et131x_rx_dma_enable(adapter);
-	et131x_tx_dma_enable(adapter);
-
-	/* Enable device interrupts */
-	if (adapter->flags & fMP_ADAPTER_INTERRUPT_IN_USE)
-		et131x_enable_interrupts(adapter);
-
-	/* We're ready to move some data, so start the queue */
-	netif_start_queue(netdev);
-}
-
-/**
- * et131x_disable_txrx - Disable tx/rx queues
- * @netdev: device to be disabled
- */
-void et131x_disable_txrx(struct net_device *netdev)
-{
-	struct et131x_adapter *adapter = netdev_priv(netdev);
-
-	/* First thing is to stop the queue */
-	netif_stop_queue(netdev);
-
-	/* Stop the Tx and Rx DMA engines */
-	et131x_rx_dma_disable(adapter);
-	et131x_tx_dma_disable(adapter);
-
-	/* Disable device interrupts */
-	et131x_disable_interrupts(adapter);
-}
-
-/**
- * et131x_up - Bring up a device for use.
- * @netdev: device to be opened
- */
-void et131x_up(struct net_device *netdev)
-{
-	struct et131x_adapter *adapter = netdev_priv(netdev);
-
-	et131x_enable_txrx(netdev);
-	phy_start(adapter->phydev);
-}
-
-/**
- * et131x_open - Open the device for use.
- * @netdev: device to be opened
- *
- * Returns 0 on success, errno on failure (as defined in errno.h)
- */
-int et131x_open(struct net_device *netdev)
-{
-	int result = 0;
-	struct et131x_adapter *adapter = netdev_priv(netdev);
-
-	/* Start the timer to track NIC errors */
-	init_timer(&adapter->error_timer);
-	adapter->error_timer.expires = jiffies + TX_ERROR_PERIOD * HZ / 1000;
-	adapter->error_timer.function = et131x_error_timer_handler;
-	adapter->error_timer.data = (unsigned long)adapter;
-	add_timer(&adapter->error_timer);
-
-	/* Register our IRQ */
-	result = request_irq(netdev->irq, et131x_isr, IRQF_SHARED,
-					netdev->name, netdev);
-	if (result) {
-		dev_err(&adapter->pdev->dev, "could not register IRQ %d\n",
-			netdev->irq);
-		return result;
-	}
-
-	adapter->flags |= fMP_ADAPTER_INTERRUPT_IN_USE;
-
-	et131x_up(netdev);
-
-	return result;
-}
-
-/**
- * et131x_down - Bring down the device
- * @netdev: device to be broght down
- */
-void et131x_down(struct net_device *netdev)
-{
-	struct et131x_adapter *adapter = netdev_priv(netdev);
-
-	/* Save the timestamp for the TX watchdog, prevent a timeout */
-	netdev->trans_start = jiffies;
-
-	phy_stop(adapter->phydev);
-	et131x_disable_txrx(netdev);
-}
-
-/**
- * et131x_close - Close the device
- * @netdev: device to be closed
- *
- * Returns 0 on success, errno on failure (as defined in errno.h)
- */
-int et131x_close(struct net_device *netdev)
-{
-	struct et131x_adapter *adapter = netdev_priv(netdev);
-
-	et131x_down(netdev);
-
-	adapter->flags &= ~fMP_ADAPTER_INTERRUPT_IN_USE;
-	free_irq(netdev->irq, netdev);
-
-	/* Stop the error timer */
-	return del_timer_sync(&adapter->error_timer);
-}
-
-/**
- * et131x_ioctl - The I/O Control handler for the driver
- * @netdev: device on which the control request is being made
- * @reqbuf: a pointer to the IOCTL request buffer
- * @cmd: the IOCTL command code
- *
- * Returns 0 on success, errno on failure (as defined in errno.h)
- */
-static int et131x_ioctl(struct net_device *netdev, struct ifreq *reqbuf, int cmd)
-{
-	struct et131x_adapter *adapter = netdev_priv(netdev);
-
-	if (!adapter->phydev)
-		return -EINVAL;
-
-	return phy_mii_ioctl(adapter->phydev, reqbuf, cmd);
-}
-
-/**
- * et131x_set_packet_filter - Configures the Rx Packet filtering on the device
- * @adapter: pointer to our private adapter structure
- *
- * FIXME: lot of dups with MAC code
- *
- * Returns 0 on success, errno on failure
- */
-static int et131x_set_packet_filter(struct et131x_adapter *adapter)
-{
-	int status = 0;
-	uint32_t filter = adapter->packet_filter;
-	u32 ctrl;
-	u32 pf_ctrl;
-
-	ctrl = readl(&adapter->regs->rxmac.ctrl);
-	pf_ctrl = readl(&adapter->regs->rxmac.pf_ctrl);
-
-	/* Default to disabled packet filtering.  Enable it in the individual
-	 * case statements that require the device to filter something
-	 */
-	ctrl |= 0x04;
-
-	/* Set us to be in promiscuous mode so we receive everything, this
-	 * is also true when we get a packet filter of 0
-	 */
-	if ((filter & ET131X_PACKET_TYPE_PROMISCUOUS) || filter == 0)
-		pf_ctrl &= ~7;	/* Clear filter bits */
-	else {
-		/*
-		 * Set us up with Multicast packet filtering.  Three cases are
-		 * possible - (1) we have a multi-cast list, (2) we receive ALL
-		 * multicast entries or (3) we receive none.
-		 */
-		if (filter & ET131X_PACKET_TYPE_ALL_MULTICAST)
-			pf_ctrl &= ~2;	/* Multicast filter bit */
-		else {
-			et1310_setup_device_for_multicast(adapter);
-			pf_ctrl |= 2;
-			ctrl &= ~0x04;
-		}
-
-		/* Set us up with Unicast packet filtering */
-		if (filter & ET131X_PACKET_TYPE_DIRECTED) {
-			et1310_setup_device_for_unicast(adapter);
-			pf_ctrl |= 4;
-			ctrl &= ~0x04;
-		}
-
-		/* Set us up with Broadcast packet filtering */
-		if (filter & ET131X_PACKET_TYPE_BROADCAST) {
-			pf_ctrl |= 1;	/* Broadcast filter bit */
-			ctrl &= ~0x04;
-		} else
-			pf_ctrl &= ~1;
-
-		/* Setup the receive mac configuration registers - Packet
-		 * Filter control + the enable / disable for packet filter
-		 * in the control reg.
-		 */
-		writel(pf_ctrl, &adapter->regs->rxmac.pf_ctrl);
-		writel(ctrl, &adapter->regs->rxmac.ctrl);
-	}
-	return status;
-}
-
-/**
- * et131x_multicast - The handler to configure multicasting on the interface
- * @netdev: a pointer to a net_device struct representing the device
- */
-static void et131x_multicast(struct net_device *netdev)
-{
-	struct et131x_adapter *adapter = netdev_priv(netdev);
-	uint32_t packet_filter = 0;
-	unsigned long flags;
-	struct netdev_hw_addr *ha;
-	int i;
-
-	spin_lock_irqsave(&adapter->lock, flags);
-
-	/* Before we modify the platform-independent filter flags, store them
-	 * locally. This allows us to determine if anything's changed and if
-	 * we even need to bother the hardware
-	 */
-	packet_filter = adapter->packet_filter;
-
-	/* Clear the 'multicast' flag locally; because we only have a single
-	 * flag to check multicast, and multiple multicast addresses can be
-	 * set, this is the easiest way to determine if more than one
-	 * multicast address is being set.
-	 */
-	packet_filter &= ~ET131X_PACKET_TYPE_MULTICAST;
-
-	/* Check the net_device flags and set the device independent flags
-	 * accordingly
-	 */
-
-	if (netdev->flags & IFF_PROMISC)
-		adapter->packet_filter |= ET131X_PACKET_TYPE_PROMISCUOUS;
-	else
-		adapter->packet_filter &= ~ET131X_PACKET_TYPE_PROMISCUOUS;
-
-	if (netdev->flags & IFF_ALLMULTI)
-		adapter->packet_filter |= ET131X_PACKET_TYPE_ALL_MULTICAST;
-
-	if (netdev_mc_count(netdev) > NIC_MAX_MCAST_LIST)
-		adapter->packet_filter |= ET131X_PACKET_TYPE_ALL_MULTICAST;
-
-	if (netdev_mc_count(netdev) < 1) {
-		adapter->packet_filter &= ~ET131X_PACKET_TYPE_ALL_MULTICAST;
-		adapter->packet_filter &= ~ET131X_PACKET_TYPE_MULTICAST;
-	} else
-		adapter->packet_filter |= ET131X_PACKET_TYPE_MULTICAST;
-
-	/* Set values in the private adapter struct */
-	i = 0;
-	netdev_for_each_mc_addr(ha, netdev) {
-		if (i == NIC_MAX_MCAST_LIST)
-			break;
-		memcpy(adapter->multicast_list[i++], ha->addr, ETH_ALEN);
-	}
-	adapter->multicast_addr_count = i;
-
-	/* Are the new flags different from the previous ones? If not, then no
-	 * action is required
-	 *
-	 * NOTE - This block will always update the multicast_list with the
-	 *        hardware, even if the addresses aren't the same.
-	 */
-	if (packet_filter != adapter->packet_filter) {
-		/* Call the device's filter function */
-		et131x_set_packet_filter(adapter);
-	}
-	spin_unlock_irqrestore(&adapter->lock, flags);
-}
-
-/**
- * et131x_tx - The handler to tx a packet on the device
- * @skb: data to be Tx'd
- * @netdev: device on which data is to be Tx'd
- *
- * Returns 0 on success, errno on failure (as defined in errno.h)
- */
-static int et131x_tx(struct sk_buff *skb, struct net_device *netdev)
-{
-	int status = 0;
-
-	/* Save the timestamp for the TX timeout watchdog */
-	netdev->trans_start = jiffies;
-
-	/* Call the device-specific data Tx routine */
-	status = et131x_send_packets(skb, netdev);
-
-	/* Check status and manage the netif queue if necessary */
-	if (status != 0) {
-		if (status == -ENOMEM) {
-			/* Put the queue to sleep until resources are
-			 * available
-			 */
-			netif_stop_queue(netdev);
-			status = NETDEV_TX_BUSY;
-		} else {
-			status = NETDEV_TX_OK;
-		}
-	}
-	return status;
-}
-
-/**
- * et131x_tx_timeout - Timeout handler
- * @netdev: a pointer to a net_device struct representing the device
- *
- * The handler called when a Tx request times out. The timeout period is
- * specified by the 'tx_timeo" element in the net_device structure (see
- * et131x_alloc_device() to see how this value is set).
- */
-static void et131x_tx_timeout(struct net_device *netdev)
-{
-	struct et131x_adapter *adapter = netdev_priv(netdev);
-	struct tcb *tcb;
-	unsigned long flags;
-
-	/* If the device is closed, ignore the timeout */
-	if (~(adapter->flags & fMP_ADAPTER_INTERRUPT_IN_USE))
-		return;
-
-	/* Any nonrecoverable hardware error?
-	 * Checks adapter->flags for any failure in phy reading
-	 */
-	if (adapter->flags & fMP_ADAPTER_NON_RECOVER_ERROR)
-		return;
-
-	/* Hardware failure? */
-	if (adapter->flags & fMP_ADAPTER_HARDWARE_ERROR) {
-		dev_err(&adapter->pdev->dev, "hardware error - reset\n");
-		return;
-	}
-
-	/* Is send stuck? */
-	spin_lock_irqsave(&adapter->tcb_send_qlock, flags);
-
-	tcb = adapter->tx_ring.send_head;
-
-	if (tcb != NULL) {
-		tcb->count++;
-
-		if (tcb->count > NIC_SEND_HANG_THRESHOLD) {
-			spin_unlock_irqrestore(&adapter->tcb_send_qlock,
-					       flags);
-
-			dev_warn(&adapter->pdev->dev,
-				"Send stuck - reset.  tcb->WrIndex %x, flags 0x%08x\n",
-				tcb->index,
-				tcb->flags);
-
-			adapter->net_stats.tx_errors++;
-
-			/* perform reset of tx/rx */
-			et131x_disable_txrx(netdev);
-			et131x_enable_txrx(netdev);
-			return;
-		}
-	}
-
-	spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags);
-}
-
-/**
- * et131x_change_mtu - The handler called to change the MTU for the device
- * @netdev: device whose MTU is to be changed
- * @new_mtu: the desired MTU
- *
- * Returns 0 on success, errno on failure (as defined in errno.h)
- */
-static int et131x_change_mtu(struct net_device *netdev, int new_mtu)
-{
-	int result = 0;
-	struct et131x_adapter *adapter = netdev_priv(netdev);
-
-	/* Make sure the requested MTU is valid */
-	if (new_mtu < 64 || new_mtu > 9216)
-		return -EINVAL;
-
-	et131x_disable_txrx(netdev);
-	et131x_handle_send_interrupt(adapter);
-	et131x_handle_recv_interrupt(adapter);
-
-	/* Set the new MTU */
-	netdev->mtu = new_mtu;
-
-	/* Free Rx DMA memory */
-	et131x_adapter_memory_free(adapter);
-
-	/* Set the config parameter for Jumbo Packet support */
-	adapter->registry_jumbo_packet = new_mtu + 14;
-	et131x_soft_reset(adapter);
-
-	/* Alloc and init Rx DMA memory */
-	result = et131x_adapter_memory_alloc(adapter);
-	if (result != 0) {
-		dev_warn(&adapter->pdev->dev,
-			"Change MTU failed; couldn't re-alloc DMA memory\n");
-		return result;
-	}
-
-	et131x_init_send(adapter);
-
-	et131x_hwaddr_init(adapter);
-	memcpy(netdev->dev_addr, adapter->addr, ETH_ALEN);
-
-	/* Init the device with the new settings */
-	et131x_adapter_setup(adapter);
-
-	et131x_enable_txrx(netdev);
-
-	return result;
-}
-
-/**
- * et131x_set_mac_addr - handler to change the MAC address for the device
- * @netdev: device whose MAC is to be changed
- * @new_mac: the desired MAC address
- *
- * Returns 0 on success, errno on failure (as defined in errno.h)
- *
- * IMPLEMENTED BY : blux http://berndlux.de 22.01.2007 21:14
- */
-static int et131x_set_mac_addr(struct net_device *netdev, void *new_mac)
-{
-	int result = 0;
-	struct et131x_adapter *adapter = netdev_priv(netdev);
-	struct sockaddr *address = new_mac;
-
-	/* begin blux */
-
-	if (adapter == NULL)
-		return -ENODEV;
-
-	/* Make sure the requested MAC is valid */
-	if (!is_valid_ether_addr(address->sa_data))
-		return -EINVAL;
-
-	et131x_disable_txrx(netdev);
-	et131x_handle_send_interrupt(adapter);
-	et131x_handle_recv_interrupt(adapter);
-
-	/* Set the new MAC */
-	/* netdev->set_mac_address  = &new_mac; */
-
-	memcpy(netdev->dev_addr, address->sa_data, netdev->addr_len);
-
-	printk(KERN_INFO "%s: Setting MAC address to %pM\n",
-			netdev->name, netdev->dev_addr);
-
-	/* Free Rx DMA memory */
-	et131x_adapter_memory_free(adapter);
-
-	et131x_soft_reset(adapter);
-
-	/* Alloc and init Rx DMA memory */
-	result = et131x_adapter_memory_alloc(adapter);
-	if (result != 0) {
-		dev_err(&adapter->pdev->dev,
-			"Change MAC failed; couldn't re-alloc DMA memory\n");
-		return result;
-	}
-
-	et131x_init_send(adapter);
-
-	et131x_hwaddr_init(adapter);
-
-	/* Init the device with the new settings */
-	et131x_adapter_setup(adapter);
-
-	et131x_enable_txrx(netdev);
-
-	return result;
-}
-
-static const struct net_device_ops et131x_netdev_ops = {
-	.ndo_open		= et131x_open,
-	.ndo_stop		= et131x_close,
-	.ndo_start_xmit		= et131x_tx,
-	.ndo_set_multicast_list	= et131x_multicast,
-	.ndo_tx_timeout		= et131x_tx_timeout,
-	.ndo_change_mtu		= et131x_change_mtu,
-	.ndo_set_mac_address	= et131x_set_mac_addr,
-	.ndo_validate_addr	= eth_validate_addr,
-	.ndo_get_stats		= et131x_stats,
-	.ndo_do_ioctl		= et131x_ioctl,
-};
-
-/**
- * et131x_device_alloc
- *
- * Returns pointer to the allocated and initialized net_device struct for
- * this device.
- *
- * Create instances of net_device and wl_private for the new adapter and
- * register the device's entry points in the net_device structure.
- */
-struct net_device *et131x_device_alloc(void)
-{
-	struct net_device *netdev;
-
-	/* Alloc net_device and adapter structs */
-	netdev = alloc_etherdev(sizeof(struct et131x_adapter));
-
-	if (!netdev) {
-		printk(KERN_ERR "et131x: Alloc of net_device struct failed\n");
-		return NULL;
-	}
-
-	/*
-	 * Setup the function registration table (and other data) for a
-	 * net_device
-	 */
-	netdev->watchdog_timeo = ET131X_TX_TIMEOUT;
-	netdev->netdev_ops     = &et131x_netdev_ops;
-
-	/* Poll? */
-	/* netdev->poll               = &et131x_poll; */
-	/* netdev->poll_controller    = &et131x_poll_controller; */
-	return netdev;
-}
-