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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 * @wol_filter_id: Wake-on-LAN packet filter id
147 */
148struct siena_nic_data {
149 struct efx_mcdi_iface mcdi;
150 int wol_filter_id;
151};
152
153extern const struct efx_nic_type falcon_a1_nic_type;
154extern const struct efx_nic_type falcon_b0_nic_type;
155extern const struct efx_nic_type siena_a0_nic_type;
156
157/**************************************************************************
158 *
159 * Externs
160 *
161 **************************************************************************
162 */
163
164extern int falcon_probe_board(struct efx_nic *efx, u16 revision_info);
165
166/* TX data path */
167extern int efx_nic_probe_tx(struct efx_tx_queue *tx_queue);
168extern void efx_nic_init_tx(struct efx_tx_queue *tx_queue);
169extern void efx_nic_fini_tx(struct efx_tx_queue *tx_queue);
170extern void efx_nic_remove_tx(struct efx_tx_queue *tx_queue);
171extern void efx_nic_push_buffers(struct efx_tx_queue *tx_queue);
172
173/* RX data path */
174extern int efx_nic_probe_rx(struct efx_rx_queue *rx_queue);
175extern void efx_nic_init_rx(struct efx_rx_queue *rx_queue);
176extern void efx_nic_fini_rx(struct efx_rx_queue *rx_queue);
177extern void efx_nic_remove_rx(struct efx_rx_queue *rx_queue);
178extern void efx_nic_notify_rx_desc(struct efx_rx_queue *rx_queue);
179
180/* Event data path */
181extern int efx_nic_probe_eventq(struct efx_channel *channel);
182extern void efx_nic_init_eventq(struct efx_channel *channel);
183extern void efx_nic_fini_eventq(struct efx_channel *channel);
184extern void efx_nic_remove_eventq(struct efx_channel *channel);
185extern int efx_nic_process_eventq(struct efx_channel *channel, int rx_quota);
186extern void efx_nic_eventq_read_ack(struct efx_channel *channel);
187extern bool efx_nic_event_present(struct efx_channel *channel);
188
189/* MAC/PHY */
190extern void falcon_drain_tx_fifo(struct efx_nic *efx);
191extern void falcon_reconfigure_mac_wrapper(struct efx_nic *efx);
192
193/* Interrupts and test events */
194extern int efx_nic_init_interrupt(struct efx_nic *efx);
195extern void efx_nic_enable_interrupts(struct efx_nic *efx);
196extern void efx_nic_generate_test_event(struct efx_channel *channel);
197extern void efx_nic_generate_fill_event(struct efx_channel *channel);
198extern void efx_nic_generate_interrupt(struct efx_nic *efx);
199extern void efx_nic_disable_interrupts(struct efx_nic *efx);
200extern void efx_nic_fini_interrupt(struct efx_nic *efx);
201extern irqreturn_t efx_nic_fatal_interrupt(struct efx_nic *efx);
202extern irqreturn_t falcon_legacy_interrupt_a1(int irq, void *dev_id);
203extern void falcon_irq_ack_a1(struct efx_nic *efx);
204
205#define EFX_IRQ_MOD_RESOLUTION 5
206
207/* Global Resources */
208extern int efx_nic_flush_queues(struct efx_nic *efx);
209extern void falcon_start_nic_stats(struct efx_nic *efx);
210extern void falcon_stop_nic_stats(struct efx_nic *efx);
211extern void falcon_setup_xaui(struct efx_nic *efx);
212extern int falcon_reset_xaui(struct efx_nic *efx);
213extern void efx_nic_init_common(struct efx_nic *efx);
214extern void efx_nic_push_rx_indir_table(struct efx_nic *efx);
215
216int efx_nic_alloc_buffer(struct efx_nic *efx, struct efx_buffer *buffer,
217 unsigned int len);
218void efx_nic_free_buffer(struct efx_nic *efx, struct efx_buffer *buffer);
219
220/* Tests */
221struct efx_nic_register_test {
222 unsigned address;
223 efx_oword_t mask;
224};
225extern int efx_nic_test_registers(struct efx_nic *efx,
226 const struct efx_nic_register_test *regs,
227 size_t n_regs);
228
229extern size_t efx_nic_get_regs_len(struct efx_nic *efx);
230extern void efx_nic_get_regs(struct efx_nic *efx, void *buf);
231
232/**************************************************************************
233 *
234 * Falcon MAC stats
235 *
236 **************************************************************************
237 */
238
239#define FALCON_STAT_OFFSET(falcon_stat) EFX_VAL(falcon_stat, offset)
240#define FALCON_STAT_WIDTH(falcon_stat) EFX_VAL(falcon_stat, WIDTH)
241
242/* Retrieve statistic from statistics block */
243#define FALCON_STAT(efx, falcon_stat, efx_stat) do { \
244 if (FALCON_STAT_WIDTH(falcon_stat) == 16) \
245 (efx)->mac_stats.efx_stat += le16_to_cpu( \
246 *((__force __le16 *) \
247 (efx->stats_buffer.addr + \
248 FALCON_STAT_OFFSET(falcon_stat)))); \
249 else if (FALCON_STAT_WIDTH(falcon_stat) == 32) \
250 (efx)->mac_stats.efx_stat += le32_to_cpu( \
251 *((__force __le32 *) \
252 (efx->stats_buffer.addr + \
253 FALCON_STAT_OFFSET(falcon_stat)))); \
254 else \
255 (efx)->mac_stats.efx_stat += le64_to_cpu( \
256 *((__force __le64 *) \
257 (efx->stats_buffer.addr + \
258 FALCON_STAT_OFFSET(falcon_stat)))); \
259 } while (0)
260
261#define FALCON_MAC_STATS_SIZE 0x100
262
263#define MAC_DATA_LBN 0
264#define MAC_DATA_WIDTH 32
265
266extern void efx_nic_generate_event(struct efx_channel *channel,
267 efx_qword_t *event);
268
269extern void falcon_poll_xmac(struct efx_nic *efx);
270
271#endif /* EFX_NIC_H */