tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2005-2006 Fen Systems Ltd.
4 * Copyright 2006-2011 Solarflare Communications Inc.
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published
8 * by the Free Software Foundation, incorporated herein by reference.
9 */
10
11#ifndef EFX_NIC_H
12#define EFX_NIC_H
13
14#include <linux/i2c-algo-bit.h>
15#include "net_driver.h"
16#include "efx.h"
17#include "mcdi.h"
18#include "spi.h"
19
20/*
21 * Falcon hardware control
22 */
23
24enum {
25 EFX_REV_FALCON_A0 = 0,
26 EFX_REV_FALCON_A1 = 1,
27 EFX_REV_FALCON_B0 = 2,
28 EFX_REV_SIENA_A0 = 3,
29};
30
31static inline int efx_nic_rev(struct efx_nic *efx)
32{
33 return efx->type->revision;
34}
35
36extern u32 efx_nic_fpga_ver(struct efx_nic *efx);
37
38static inline bool efx_nic_has_mc(struct efx_nic *efx)
39{
40 return efx_nic_rev(efx) >= EFX_REV_SIENA_A0;
41}
42/* NIC has two interlinked PCI functions for the same port. */
43static inline bool efx_nic_is_dual_func(struct efx_nic *efx)
44{
45 return efx_nic_rev(efx) < EFX_REV_FALCON_B0;
46}
47
48enum {
49 PHY_TYPE_NONE = 0,
50 PHY_TYPE_TXC43128 = 1,
51 PHY_TYPE_88E1111 = 2,
52 PHY_TYPE_SFX7101 = 3,
53 PHY_TYPE_QT2022C2 = 4,
54 PHY_TYPE_PM8358 = 6,
55 PHY_TYPE_SFT9001A = 8,
56 PHY_TYPE_QT2025C = 9,
57 PHY_TYPE_SFT9001B = 10,
58};
59
60#define FALCON_XMAC_LOOPBACKS \
61 ((1 << LOOPBACK_XGMII) | \
62 (1 << LOOPBACK_XGXS) | \
63 (1 << LOOPBACK_XAUI))
64
65#define FALCON_GMAC_LOOPBACKS \
66 (1 << LOOPBACK_GMAC)
67
68/**
69 * struct falcon_board_type - board operations and type information
70 * @id: Board type id, as found in NVRAM
71 * @ref_model: Model number of Solarflare reference design
72 * @gen_type: Generic board type description
73 * @init: Allocate resources and initialise peripheral hardware
74 * @init_phy: Do board-specific PHY initialisation
75 * @fini: Shut down hardware and free resources
76 * @set_id_led: Set state of identifying LED or revert to automatic function
77 * @monitor: Board-specific health check function
78 */
79struct falcon_board_type {
80 u8 id;
81 const char *ref_model;
82 const char *gen_type;
83 int (*init) (struct efx_nic *nic);
84 void (*init_phy) (struct efx_nic *efx);
85 void (*fini) (struct efx_nic *nic);
86 void (*set_id_led) (struct efx_nic *efx, enum efx_led_mode mode);
87 int (*monitor) (struct efx_nic *nic);
88};
89
90/**
91 * struct falcon_board - board information
92 * @type: Type of board
93 * @major: Major rev. ('A', 'B' ...)
94 * @minor: Minor rev. (0, 1, ...)
95 * @i2c_adap: I2C adapter for on-board peripherals
96 * @i2c_data: Data for bit-banging algorithm
97 * @hwmon_client: I2C client for hardware monitor
98 * @ioexp_client: I2C client for power/port control
99 */
100struct falcon_board {
101 const struct falcon_board_type *type;
102 int major;
103 int minor;
104 struct i2c_adapter i2c_adap;
105 struct i2c_algo_bit_data i2c_data;
106 struct i2c_client *hwmon_client, *ioexp_client;
107};
108
109/**
110 * struct falcon_nic_data - Falcon NIC state
111 * @pci_dev2: Secondary function of Falcon A
112 * @board: Board state and functions
113 * @stats_disable_count: Nest count for disabling statistics fetches
114 * @stats_pending: Is there a pending DMA of MAC statistics.
115 * @stats_timer: A timer for regularly fetching MAC statistics.
116 * @stats_dma_done: Pointer to the flag which indicates DMA completion.
117 * @spi_flash: SPI flash device
118 * @spi_eeprom: SPI EEPROM device
119 * @spi_lock: SPI bus lock
120 * @mdio_lock: MDIO bus lock
121 * @xmac_poll_required: XMAC link state needs polling
122 */
123struct falcon_nic_data {
124 struct pci_dev *pci_dev2;
125 struct falcon_board board;
126 unsigned int stats_disable_count;
127 bool stats_pending;
128 struct timer_list stats_timer;
129 u32 *stats_dma_done;
130 struct efx_spi_device spi_flash;
131 struct efx_spi_device spi_eeprom;
132 struct mutex spi_lock;
133 struct mutex mdio_lock;
134 bool xmac_poll_required;
135};
136
137static inline struct falcon_board *falcon_board(struct efx_nic *efx)
138{
139 struct falcon_nic_data *data = efx->nic_data;
140 return &data->board;
141}
142
143/**
144 * struct siena_nic_data - Siena NIC state
145 * @mcdi: Management-Controller-to-Driver Interface
146 * @mcdi_smem: MCDI shared memory mapping. The mapping is always uncacheable.
147 * @wol_filter_id: Wake-on-LAN packet filter id
148 */
149struct siena_nic_data {
150 struct efx_mcdi_iface mcdi;
151 void __iomem *mcdi_smem;
152 int wol_filter_id;
153};
154
155extern const struct efx_nic_type falcon_a1_nic_type;
156extern const struct efx_nic_type falcon_b0_nic_type;
157extern const struct efx_nic_type siena_a0_nic_type;
158
159/**************************************************************************
160 *
161 * Externs
162 *
163 **************************************************************************
164 */
165
166extern int falcon_probe_board(struct efx_nic *efx, u16 revision_info);
167
168/* TX data path */
169extern int efx_nic_probe_tx(struct efx_tx_queue *tx_queue);
170extern void efx_nic_init_tx(struct efx_tx_queue *tx_queue);
171extern void efx_nic_fini_tx(struct efx_tx_queue *tx_queue);
172extern void efx_nic_remove_tx(struct efx_tx_queue *tx_queue);
173extern void efx_nic_push_buffers(struct efx_tx_queue *tx_queue);
174
175/* RX data path */
176extern int efx_nic_probe_rx(struct efx_rx_queue *rx_queue);
177extern void efx_nic_init_rx(struct efx_rx_queue *rx_queue);
178extern void efx_nic_fini_rx(struct efx_rx_queue *rx_queue);
179extern void efx_nic_remove_rx(struct efx_rx_queue *rx_queue);
180extern void efx_nic_notify_rx_desc(struct efx_rx_queue *rx_queue);
181
182/* Event data path */
183extern int efx_nic_probe_eventq(struct efx_channel *channel);
184extern void efx_nic_init_eventq(struct efx_channel *channel);
185extern void efx_nic_fini_eventq(struct efx_channel *channel);
186extern void efx_nic_remove_eventq(struct efx_channel *channel);
187extern int efx_nic_process_eventq(struct efx_channel *channel, int rx_quota);
188extern void efx_nic_eventq_read_ack(struct efx_channel *channel);
189extern bool efx_nic_event_present(struct efx_channel *channel);
190
191/* MAC/PHY */
192extern void falcon_drain_tx_fifo(struct efx_nic *efx);
193extern void falcon_reconfigure_mac_wrapper(struct efx_nic *efx);
194
195/* Interrupts and test events */
196extern int efx_nic_init_interrupt(struct efx_nic *efx);
197extern void efx_nic_enable_interrupts(struct efx_nic *efx);
198extern void efx_nic_generate_test_event(struct efx_channel *channel);
199extern void efx_nic_generate_fill_event(struct efx_channel *channel);
200extern void efx_nic_generate_interrupt(struct efx_nic *efx);
201extern void efx_nic_disable_interrupts(struct efx_nic *efx);
202extern void efx_nic_fini_interrupt(struct efx_nic *efx);
203extern irqreturn_t efx_nic_fatal_interrupt(struct efx_nic *efx);
204extern irqreturn_t falcon_legacy_interrupt_a1(int irq, void *dev_id);
205extern void falcon_irq_ack_a1(struct efx_nic *efx);
206
207#define EFX_IRQ_MOD_RESOLUTION 5
208
209/* Global Resources */
210extern int efx_nic_flush_queues(struct efx_nic *efx);
211extern void falcon_start_nic_stats(struct efx_nic *efx);
212extern void falcon_stop_nic_stats(struct efx_nic *efx);
213extern void falcon_setup_xaui(struct efx_nic *efx);
214extern int falcon_reset_xaui(struct efx_nic *efx);
215extern void efx_nic_init_common(struct efx_nic *efx);
216extern void efx_nic_push_rx_indir_table(struct efx_nic *efx);
217
218int efx_nic_alloc_buffer(struct efx_nic *efx, struct efx_buffer *buffer,
219 unsigned int len);
220void efx_nic_free_buffer(struct efx_nic *efx, struct efx_buffer *buffer);
221
222/* Tests */
223struct efx_nic_register_test {
224 unsigned address;
225 efx_oword_t mask;
226};
227extern int efx_nic_test_registers(struct efx_nic *efx,
228 const struct efx_nic_register_test *regs,
229 size_t n_regs);
230
231extern size_t efx_nic_get_regs_len(struct efx_nic *efx);
232extern void efx_nic_get_regs(struct efx_nic *efx, void *buf);
233
234/**************************************************************************
235 *
236 * Falcon MAC stats
237 *
238 **************************************************************************
239 */
240
241#define FALCON_STAT_OFFSET(falcon_stat) EFX_VAL(falcon_stat, offset)
242#define FALCON_STAT_WIDTH(falcon_stat) EFX_VAL(falcon_stat, WIDTH)
243
244/* Retrieve statistic from statistics block */
245#define FALCON_STAT(efx, falcon_stat, efx_stat) do { \
246 if (FALCON_STAT_WIDTH(falcon_stat) == 16) \
247 (efx)->mac_stats.efx_stat += le16_to_cpu( \
248 *((__force __le16 *) \
249 (efx->stats_buffer.addr + \
250 FALCON_STAT_OFFSET(falcon_stat)))); \
251 else if (FALCON_STAT_WIDTH(falcon_stat) == 32) \
252 (efx)->mac_stats.efx_stat += le32_to_cpu( \
253 *((__force __le32 *) \
254 (efx->stats_buffer.addr + \
255 FALCON_STAT_OFFSET(falcon_stat)))); \
256 else \
257 (efx)->mac_stats.efx_stat += le64_to_cpu( \
258 *((__force __le64 *) \
259 (efx->stats_buffer.addr + \
260 FALCON_STAT_OFFSET(falcon_stat)))); \
261 } while (0)
262
263#define FALCON_MAC_STATS_SIZE 0x100
264
265#define MAC_DATA_LBN 0
266#define MAC_DATA_WIDTH 32
267
268extern void efx_nic_generate_event(struct efx_channel *channel,
269 efx_qword_t *event);
270
271extern void falcon_poll_xmac(struct efx_nic *efx);
272
273#endif /* EFX_NIC_H */