1 /****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2005-2006 Fen Systems Ltd.
4 * Copyright 2006-2008 Solarflare Communications Inc.
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.
14 #include <linux/i2c-algo-bit.h>
15 #include "net_driver.h"
19 * Falcon hardware control
23 EFX_REV_FALCON_A0 = 0,
24 EFX_REV_FALCON_A1 = 1,
25 EFX_REV_FALCON_B0 = 2,
28 static inline int efx_nic_rev(struct efx_nic *efx)
30 return efx->type->revision;
33 extern u32 efx_nic_fpga_ver(struct efx_nic *efx);
35 /* NIC has two interlinked PCI functions for the same port. */
36 static inline bool efx_nic_is_dual_func(struct efx_nic *efx)
38 return efx_nic_rev(efx) < EFX_REV_FALCON_B0;
43 PHY_TYPE_TXC43128 = 1,
46 PHY_TYPE_QT2022C2 = 4,
48 PHY_TYPE_SFT9001A = 8,
50 PHY_TYPE_SFT9001B = 10,
53 #define FALCON_XMAC_LOOPBACKS \
54 ((1 << LOOPBACK_XGMII) | \
55 (1 << LOOPBACK_XGXS) | \
58 #define FALCON_GMAC_LOOPBACKS \
62 * struct falcon_board_type - board operations and type information
63 * @id: Board type id, as found in NVRAM
64 * @ref_model: Model number of Solarflare reference design
65 * @gen_type: Generic board type description
66 * @init: Allocate resources and initialise peripheral hardware
67 * @init_phy: Do board-specific PHY initialisation
68 * @fini: Shut down hardware and free resources
69 * @set_id_led: Set state of identifying LED or revert to automatic function
70 * @monitor: Board-specific health check function
72 struct falcon_board_type {
74 const char *ref_model;
76 int (*init) (struct efx_nic *nic);
77 void (*init_phy) (struct efx_nic *efx);
78 void (*fini) (struct efx_nic *nic);
79 void (*set_id_led) (struct efx_nic *efx, enum efx_led_mode mode);
80 int (*monitor) (struct efx_nic *nic);
84 * struct falcon_board - board information
85 * @type: Type of board
86 * @major: Major rev. ('A', 'B' ...)
87 * @minor: Minor rev. (0, 1, ...)
88 * @i2c_adap: I2C adapter for on-board peripherals
89 * @i2c_data: Data for bit-banging algorithm
90 * @hwmon_client: I2C client for hardware monitor
91 * @ioexp_client: I2C client for power/port control
94 const struct falcon_board_type *type;
97 struct i2c_adapter i2c_adap;
98 struct i2c_algo_bit_data i2c_data;
99 struct i2c_client *hwmon_client, *ioexp_client;
103 * struct falcon_nic_data - Falcon NIC state
104 * @pci_dev2: Secondary function of Falcon A
105 * @board: Board state and functions
106 * @stats_disable_count: Nest count for disabling statistics fetches
107 * @stats_pending: Is there a pending DMA of MAC statistics.
108 * @stats_timer: A timer for regularly fetching MAC statistics.
109 * @stats_dma_done: Pointer to the flag which indicates DMA completion.
111 struct falcon_nic_data {
112 struct pci_dev *pci_dev2;
113 struct falcon_board board;
114 unsigned int stats_disable_count;
116 struct timer_list stats_timer;
120 static inline struct falcon_board *falcon_board(struct efx_nic *efx)
122 struct falcon_nic_data *data = efx->nic_data;
126 extern struct efx_nic_type falcon_a1_nic_type;
127 extern struct efx_nic_type falcon_b0_nic_type;
129 /**************************************************************************
133 **************************************************************************
136 extern void falcon_probe_board(struct efx_nic *efx, u16 revision_info);
139 extern int efx_nic_probe_tx(struct efx_tx_queue *tx_queue);
140 extern void efx_nic_init_tx(struct efx_tx_queue *tx_queue);
141 extern void efx_nic_fini_tx(struct efx_tx_queue *tx_queue);
142 extern void efx_nic_remove_tx(struct efx_tx_queue *tx_queue);
143 extern void efx_nic_push_buffers(struct efx_tx_queue *tx_queue);
146 extern int efx_nic_probe_rx(struct efx_rx_queue *rx_queue);
147 extern void efx_nic_init_rx(struct efx_rx_queue *rx_queue);
148 extern void efx_nic_fini_rx(struct efx_rx_queue *rx_queue);
149 extern void efx_nic_remove_rx(struct efx_rx_queue *rx_queue);
150 extern void efx_nic_notify_rx_desc(struct efx_rx_queue *rx_queue);
152 /* Event data path */
153 extern int efx_nic_probe_eventq(struct efx_channel *channel);
154 extern void efx_nic_init_eventq(struct efx_channel *channel);
155 extern void efx_nic_fini_eventq(struct efx_channel *channel);
156 extern void efx_nic_remove_eventq(struct efx_channel *channel);
157 extern int efx_nic_process_eventq(struct efx_channel *channel, int rx_quota);
158 extern void efx_nic_eventq_read_ack(struct efx_channel *channel);
161 extern void falcon_drain_tx_fifo(struct efx_nic *efx);
162 extern void falcon_reconfigure_mac_wrapper(struct efx_nic *efx);
163 extern int efx_nic_rx_xoff_thresh, efx_nic_rx_xon_thresh;
165 /* Interrupts and test events */
166 extern int efx_nic_init_interrupt(struct efx_nic *efx);
167 extern void efx_nic_enable_interrupts(struct efx_nic *efx);
168 extern void efx_nic_generate_test_event(struct efx_channel *channel,
170 extern void efx_nic_generate_interrupt(struct efx_nic *efx);
171 extern void efx_nic_disable_interrupts(struct efx_nic *efx);
172 extern void efx_nic_fini_interrupt(struct efx_nic *efx);
173 extern irqreturn_t efx_nic_fatal_interrupt(struct efx_nic *efx);
174 extern irqreturn_t falcon_legacy_interrupt_a1(int irq, void *dev_id);
175 extern void falcon_irq_ack_a1(struct efx_nic *efx);
177 #define EFX_IRQ_MOD_RESOLUTION 5
179 /* Global Resources */
180 extern int efx_nic_flush_queues(struct efx_nic *efx);
181 extern void falcon_start_nic_stats(struct efx_nic *efx);
182 extern void falcon_stop_nic_stats(struct efx_nic *efx);
183 extern int falcon_reset_xaui(struct efx_nic *efx);
184 extern void efx_nic_init_common(struct efx_nic *efx);
186 int efx_nic_alloc_buffer(struct efx_nic *efx, struct efx_buffer *buffer,
188 void efx_nic_free_buffer(struct efx_nic *efx, struct efx_buffer *buffer);
191 struct efx_nic_register_test {
195 extern int efx_nic_test_registers(struct efx_nic *efx,
196 const struct efx_nic_register_test *regs,
199 /**************************************************************************
203 **************************************************************************
206 #define FALCON_STAT_OFFSET(falcon_stat) EFX_VAL(falcon_stat, offset)
207 #define FALCON_STAT_WIDTH(falcon_stat) EFX_VAL(falcon_stat, WIDTH)
209 /* Retrieve statistic from statistics block */
210 #define FALCON_STAT(efx, falcon_stat, efx_stat) do { \
211 if (FALCON_STAT_WIDTH(falcon_stat) == 16) \
212 (efx)->mac_stats.efx_stat += le16_to_cpu( \
213 *((__force __le16 *) \
214 (efx->stats_buffer.addr + \
215 FALCON_STAT_OFFSET(falcon_stat)))); \
216 else if (FALCON_STAT_WIDTH(falcon_stat) == 32) \
217 (efx)->mac_stats.efx_stat += le32_to_cpu( \
218 *((__force __le32 *) \
219 (efx->stats_buffer.addr + \
220 FALCON_STAT_OFFSET(falcon_stat)))); \
222 (efx)->mac_stats.efx_stat += le64_to_cpu( \
223 *((__force __le64 *) \
224 (efx->stats_buffer.addr + \
225 FALCON_STAT_OFFSET(falcon_stat)))); \
228 #define FALCON_MAC_STATS_SIZE 0x100
230 #define MAC_DATA_LBN 0
231 #define MAC_DATA_WIDTH 32
233 extern void efx_nic_generate_event(struct efx_channel *channel,
236 extern void falcon_poll_xmac(struct efx_nic *efx);
238 #endif /* EFX_NIC_H */