tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/*******************************************************************************
2
3 Intel PRO/10GbE Linux driver
4 Copyright(c) 1999 - 2008 Intel Corporation.
5
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
9
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 more details.
14
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
22 Contact Information:
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26
27*******************************************************************************/
28
29#ifndef _IXGB_H_
30#define _IXGB_H_
31
32#include <linux/stddef.h>
33#include <linux/module.h>
34#include <linux/types.h>
35#include <asm/byteorder.h>
36#include <linux/init.h>
37#include <linux/mm.h>
38#include <linux/errno.h>
39#include <linux/ioport.h>
40#include <linux/pci.h>
41#include <linux/kernel.h>
42#include <linux/netdevice.h>
43#include <linux/etherdevice.h>
44#include <linux/skbuff.h>
45#include <linux/delay.h>
46#include <linux/timer.h>
47#include <linux/slab.h>
48#include <linux/vmalloc.h>
49#include <linux/interrupt.h>
50#include <linux/string.h>
51#include <linux/pagemap.h>
52#include <linux/dma-mapping.h>
53#include <linux/bitops.h>
54#include <asm/io.h>
55#include <asm/irq.h>
56#include <linux/capability.h>
57#include <linux/in.h>
58#include <linux/ip.h>
59#include <linux/tcp.h>
60#include <linux/udp.h>
61#include <net/pkt_sched.h>
62#include <linux/list.h>
63#include <linux/reboot.h>
64#include <net/checksum.h>
65
66#include <linux/ethtool.h>
67#include <linux/if_vlan.h>
68
69#define BAR_0 0
70#define BAR_1 1
71#define BAR_5 5
72
73struct ixgb_adapter;
74#include "ixgb_hw.h"
75#include "ixgb_ee.h"
76#include "ixgb_ids.h"
77
78#ifdef _DEBUG_DRIVER_
79#define IXGB_DBG(args...) printk(KERN_DEBUG "ixgb: " args)
80#else
81#define IXGB_DBG(args...)
82#endif
83
84#define PFX "ixgb: "
85#define DPRINTK(nlevel, klevel, fmt, args...) \
86 (void)((NETIF_MSG_##nlevel & adapter->msg_enable) && \
87 printk(KERN_##klevel PFX "%s: %s: " fmt, adapter->netdev->name, \
88 __func__ , ## args))
89
90
91/* TX/RX descriptor defines */
92#define DEFAULT_TXD 256
93#define MAX_TXD 4096
94#define MIN_TXD 64
95
96/* hardware cannot reliably support more than 512 descriptors owned by
97 * hardware descriptor cache otherwise an unreliable ring under heavy
98 * receive load may result */
99#define DEFAULT_RXD 512
100#define MAX_RXD 512
101#define MIN_RXD 64
102
103/* Supported Rx Buffer Sizes */
104#define IXGB_RXBUFFER_2048 2048
105#define IXGB_RXBUFFER_4096 4096
106#define IXGB_RXBUFFER_8192 8192
107#define IXGB_RXBUFFER_16384 16384
108
109/* How many Rx Buffers do we bundle into one write to the hardware ? */
110#define IXGB_RX_BUFFER_WRITE 8 /* Must be power of 2 */
111
112/* wrapper around a pointer to a socket buffer,
113 * so a DMA handle can be stored along with the buffer */
114struct ixgb_buffer {
115 struct sk_buff *skb;
116 dma_addr_t dma;
117 unsigned long time_stamp;
118 u16 length;
119 u16 next_to_watch;
120};
121
122struct ixgb_desc_ring {
123 /* pointer to the descriptor ring memory */
124 void *desc;
125 /* physical address of the descriptor ring */
126 dma_addr_t dma;
127 /* length of descriptor ring in bytes */
128 unsigned int size;
129 /* number of descriptors in the ring */
130 unsigned int count;
131 /* next descriptor to associate a buffer with */
132 unsigned int next_to_use;
133 /* next descriptor to check for DD status bit */
134 unsigned int next_to_clean;
135 /* array of buffer information structs */
136 struct ixgb_buffer *buffer_info;
137};
138
139#define IXGB_DESC_UNUSED(R) \
140 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
141 (R)->next_to_clean - (R)->next_to_use - 1)
142
143#define IXGB_GET_DESC(R, i, type) (&(((struct type *)((R).desc))[i]))
144#define IXGB_RX_DESC(R, i) IXGB_GET_DESC(R, i, ixgb_rx_desc)
145#define IXGB_TX_DESC(R, i) IXGB_GET_DESC(R, i, ixgb_tx_desc)
146#define IXGB_CONTEXT_DESC(R, i) IXGB_GET_DESC(R, i, ixgb_context_desc)
147
148/* board specific private data structure */
149
150struct ixgb_adapter {
151 struct timer_list watchdog_timer;
152 struct vlan_group *vlgrp;
153 u32 bd_number;
154 u32 rx_buffer_len;
155 u32 part_num;
156 u16 link_speed;
157 u16 link_duplex;
158 struct work_struct tx_timeout_task;
159
160 struct timer_list blink_timer;
161 unsigned long led_status;
162
163 /* TX */
164 struct ixgb_desc_ring tx_ring ____cacheline_aligned_in_smp;
165 unsigned int restart_queue;
166 unsigned long timeo_start;
167 u32 tx_cmd_type;
168 u64 hw_csum_tx_good;
169 u64 hw_csum_tx_error;
170 u32 tx_int_delay;
171 u32 tx_timeout_count;
172 bool tx_int_delay_enable;
173 bool detect_tx_hung;
174
175 /* RX */
176 struct ixgb_desc_ring rx_ring;
177 u64 hw_csum_rx_error;
178 u64 hw_csum_rx_good;
179 u32 rx_int_delay;
180 bool rx_csum;
181
182 /* OS defined structs */
183 struct napi_struct napi;
184 struct net_device *netdev;
185 struct pci_dev *pdev;
186 struct net_device_stats net_stats;
187
188 /* structs defined in ixgb_hw.h */
189 struct ixgb_hw hw;
190 u16 msg_enable;
191 struct ixgb_hw_stats stats;
192 u32 alloc_rx_buff_failed;
193 bool have_msi;
194 unsigned long flags;
195};
196
197enum ixgb_state_t {
198 /* TBD
199 __IXGB_TESTING,
200 __IXGB_RESETTING,
201 */
202 __IXGB_DOWN
203};
204
205/* Exported from other modules */
206extern void ixgb_check_options(struct ixgb_adapter *adapter);
207extern void ixgb_set_ethtool_ops(struct net_device *netdev);
208extern char ixgb_driver_name[];
209extern const char ixgb_driver_version[];
210
211extern int ixgb_up(struct ixgb_adapter *adapter);
212extern void ixgb_down(struct ixgb_adapter *adapter, bool kill_watchdog);
213extern void ixgb_reset(struct ixgb_adapter *adapter);
214extern int ixgb_setup_rx_resources(struct ixgb_adapter *adapter);
215extern int ixgb_setup_tx_resources(struct ixgb_adapter *adapter);
216extern void ixgb_free_rx_resources(struct ixgb_adapter *adapter);
217extern void ixgb_free_tx_resources(struct ixgb_adapter *adapter);
218extern void ixgb_update_stats(struct ixgb_adapter *adapter);
219
220
221#endif /* _IXGB_H_ */