1 /****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2005-2006 Fen Systems Ltd.
4 * Copyright 2006-2011 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"
21 * Falcon hardware control
25 EFX_REV_FALCON_A0 = 0,
26 EFX_REV_FALCON_A1 = 1,
27 EFX_REV_FALCON_B0 = 2,
31 static inline int efx_nic_rev(struct efx_nic *efx)
33 return efx->type->revision;
36 extern u32 efx_nic_fpga_ver(struct efx_nic *efx);
38 /* NIC has two interlinked PCI functions for the same port. */
39 static inline bool efx_nic_is_dual_func(struct efx_nic *efx)
41 return efx_nic_rev(efx) < EFX_REV_FALCON_B0;
46 PHY_TYPE_TXC43128 = 1,
49 PHY_TYPE_QT2022C2 = 4,
51 PHY_TYPE_SFT9001A = 8,
53 PHY_TYPE_SFT9001B = 10,
56 #define FALCON_XMAC_LOOPBACKS \
57 ((1 << LOOPBACK_XGMII) | \
58 (1 << LOOPBACK_XGXS) | \
61 #define FALCON_GMAC_LOOPBACKS \
64 /* Alignment of PCIe DMA boundaries (4KB) */
65 #define EFX_PAGE_SIZE 4096
66 /* Size and alignment of buffer table entries (same) */
67 #define EFX_BUF_SIZE EFX_PAGE_SIZE
70 * struct falcon_board_type - board operations and type information
71 * @id: Board type id, as found in NVRAM
72 * @init: Allocate resources and initialise peripheral hardware
73 * @init_phy: Do board-specific PHY initialisation
74 * @fini: Shut down hardware and free resources
75 * @set_id_led: Set state of identifying LED or revert to automatic function
76 * @monitor: Board-specific health check function
78 struct falcon_board_type {
80 int (*init) (struct efx_nic *nic);
81 void (*init_phy) (struct efx_nic *efx);
82 void (*fini) (struct efx_nic *nic);
83 void (*set_id_led) (struct efx_nic *efx, enum efx_led_mode mode);
84 int (*monitor) (struct efx_nic *nic);
88 * struct falcon_board - board information
89 * @type: Type of board
90 * @major: Major rev. ('A', 'B' ...)
91 * @minor: Minor rev. (0, 1, ...)
92 * @i2c_adap: I2C adapter for on-board peripherals
93 * @i2c_data: Data for bit-banging algorithm
94 * @hwmon_client: I2C client for hardware monitor
95 * @ioexp_client: I2C client for power/port control
98 const struct falcon_board_type *type;
101 struct i2c_adapter i2c_adap;
102 struct i2c_algo_bit_data i2c_data;
103 struct i2c_client *hwmon_client, *ioexp_client;
107 * struct falcon_nic_data - Falcon NIC state
108 * @pci_dev2: Secondary function of Falcon A
109 * @board: Board state and functions
110 * @stats_disable_count: Nest count for disabling statistics fetches
111 * @stats_pending: Is there a pending DMA of MAC statistics.
112 * @stats_timer: A timer for regularly fetching MAC statistics.
113 * @stats_dma_done: Pointer to the flag which indicates DMA completion.
114 * @spi_flash: SPI flash device
115 * @spi_eeprom: SPI EEPROM device
116 * @spi_lock: SPI bus lock
117 * @mdio_lock: MDIO bus lock
118 * @xmac_poll_required: XMAC link state needs polling
120 struct falcon_nic_data {
121 struct pci_dev *pci_dev2;
122 struct falcon_board board;
123 unsigned int stats_disable_count;
125 struct timer_list stats_timer;
127 struct efx_spi_device spi_flash;
128 struct efx_spi_device spi_eeprom;
129 struct mutex spi_lock;
130 struct mutex mdio_lock;
131 bool xmac_poll_required;
134 static inline struct falcon_board *falcon_board(struct efx_nic *efx)
136 struct falcon_nic_data *data = efx->nic_data;
141 * struct siena_nic_data - Siena NIC state
142 * @mcdi: Management-Controller-to-Driver Interface
143 * @wol_filter_id: Wake-on-LAN packet filter id
144 * @hwmon: Hardware monitor state
146 struct siena_nic_data {
147 struct efx_mcdi_iface mcdi;
149 #ifdef CONFIG_SFC_MCDI_MON
150 struct efx_mcdi_mon hwmon;
154 #ifdef CONFIG_SFC_MCDI_MON
155 static inline struct efx_mcdi_mon *efx_mcdi_mon(struct efx_nic *efx)
157 struct siena_nic_data *nic_data;
158 EFX_BUG_ON_PARANOID(efx_nic_rev(efx) < EFX_REV_SIENA_A0);
159 nic_data = efx->nic_data;
160 return &nic_data->hwmon;
165 * On the SFC9000 family each port is associated with 1 PCI physical
166 * function (PF) handled by sfc and a configurable number of virtual
167 * functions (VFs) that may be handled by some other driver, often in
168 * a VM guest. The queue pointer registers are mapped in both PF and
169 * VF BARs such that an 8K region provides access to a single RX, TX
170 * and event queue (collectively a Virtual Interface, VI or VNIC).
172 * The PF has access to all 1024 VIs while VFs are mapped to VIs
173 * according to VI_BASE and VI_SCALE: VF i has access to VIs numbered
174 * in range [VI_BASE + i << VI_SCALE, VI_BASE + i + 1 << VI_SCALE).
175 * The number of VIs and the VI_SCALE value are configurable but must
176 * be established at boot time by firmware.
179 /* Maximum VI_SCALE parameter supported by Siena */
180 #define EFX_VI_SCALE_MAX 6
181 /* Base VI to use for SR-IOV. Must be aligned to (1 << EFX_VI_SCALE_MAX),
182 * so this is the smallest allowed value. */
183 #define EFX_VI_BASE 128U
184 /* Maximum number of VFs allowed */
185 #define EFX_VF_COUNT_MAX 127
186 /* Limit EVQs on VFs to be only 8k to reduce buffer table reservation */
187 #define EFX_MAX_VF_EVQ_SIZE 8192UL
188 /* The number of buffer table entries reserved for each VI on a VF */
189 #define EFX_VF_BUFTBL_PER_VI \
190 ((EFX_MAX_VF_EVQ_SIZE + 2 * EFX_MAX_DMAQ_SIZE) * \
191 sizeof(efx_qword_t) / EFX_BUF_SIZE)
193 #ifdef CONFIG_SFC_SRIOV
195 static inline bool efx_sriov_wanted(struct efx_nic *efx)
197 return efx->vf_count != 0;
199 static inline bool efx_sriov_enabled(struct efx_nic *efx)
201 return efx->vf_init_count != 0;
203 static inline unsigned int efx_vf_size(struct efx_nic *efx)
205 return 1 << efx->vi_scale;
208 extern int efx_init_sriov(void);
209 extern void efx_sriov_probe(struct efx_nic *efx);
210 extern int efx_sriov_init(struct efx_nic *efx);
211 extern void efx_sriov_mac_address_changed(struct efx_nic *efx);
212 extern void efx_sriov_tx_flush_done(struct efx_nic *efx, efx_qword_t *event);
213 extern void efx_sriov_rx_flush_done(struct efx_nic *efx, efx_qword_t *event);
214 extern void efx_sriov_event(struct efx_channel *channel, efx_qword_t *event);
215 extern void efx_sriov_desc_fetch_err(struct efx_nic *efx, unsigned dmaq);
216 extern void efx_sriov_flr(struct efx_nic *efx, unsigned flr);
217 extern void efx_sriov_reset(struct efx_nic *efx);
218 extern void efx_sriov_fini(struct efx_nic *efx);
219 extern void efx_fini_sriov(void);
223 static inline bool efx_sriov_wanted(struct efx_nic *efx) { return false; }
224 static inline bool efx_sriov_enabled(struct efx_nic *efx) { return false; }
225 static inline unsigned int efx_vf_size(struct efx_nic *efx) { return 0; }
227 static inline int efx_init_sriov(void) { return 0; }
228 static inline void efx_sriov_probe(struct efx_nic *efx) {}
229 static inline int efx_sriov_init(struct efx_nic *efx) { return -EOPNOTSUPP; }
230 static inline void efx_sriov_mac_address_changed(struct efx_nic *efx) {}
231 static inline void efx_sriov_tx_flush_done(struct efx_nic *efx,
232 efx_qword_t *event) {}
233 static inline void efx_sriov_rx_flush_done(struct efx_nic *efx,
234 efx_qword_t *event) {}
235 static inline void efx_sriov_event(struct efx_channel *channel,
236 efx_qword_t *event) {}
237 static inline void efx_sriov_desc_fetch_err(struct efx_nic *efx, unsigned dmaq) {}
238 static inline void efx_sriov_flr(struct efx_nic *efx, unsigned flr) {}
239 static inline void efx_sriov_reset(struct efx_nic *efx) {}
240 static inline void efx_sriov_fini(struct efx_nic *efx) {}
241 static inline void efx_fini_sriov(void) {}
245 extern int efx_sriov_set_vf_mac(struct net_device *dev, int vf, u8 *mac);
246 extern int efx_sriov_set_vf_vlan(struct net_device *dev, int vf,
248 extern int efx_sriov_get_vf_config(struct net_device *dev, int vf,
249 struct ifla_vf_info *ivf);
250 extern int efx_sriov_set_vf_spoofchk(struct net_device *net_dev, int vf,
253 extern const struct efx_nic_type falcon_a1_nic_type;
254 extern const struct efx_nic_type falcon_b0_nic_type;
255 extern const struct efx_nic_type siena_a0_nic_type;
257 /**************************************************************************
261 **************************************************************************
264 extern int falcon_probe_board(struct efx_nic *efx, u16 revision_info);
267 extern int efx_nic_probe_tx(struct efx_tx_queue *tx_queue);
268 extern void efx_nic_init_tx(struct efx_tx_queue *tx_queue);
269 extern void efx_nic_fini_tx(struct efx_tx_queue *tx_queue);
270 extern void efx_nic_remove_tx(struct efx_tx_queue *tx_queue);
271 extern void efx_nic_push_buffers(struct efx_tx_queue *tx_queue);
274 extern int efx_nic_probe_rx(struct efx_rx_queue *rx_queue);
275 extern void efx_nic_init_rx(struct efx_rx_queue *rx_queue);
276 extern void efx_nic_fini_rx(struct efx_rx_queue *rx_queue);
277 extern void efx_nic_remove_rx(struct efx_rx_queue *rx_queue);
278 extern void efx_nic_notify_rx_desc(struct efx_rx_queue *rx_queue);
279 extern void efx_nic_generate_fill_event(struct efx_rx_queue *rx_queue);
281 /* Event data path */
282 extern int efx_nic_probe_eventq(struct efx_channel *channel);
283 extern void efx_nic_init_eventq(struct efx_channel *channel);
284 extern void efx_nic_fini_eventq(struct efx_channel *channel);
285 extern void efx_nic_remove_eventq(struct efx_channel *channel);
286 extern int efx_nic_process_eventq(struct efx_channel *channel, int rx_quota);
287 extern void efx_nic_eventq_read_ack(struct efx_channel *channel);
288 extern bool efx_nic_event_present(struct efx_channel *channel);
291 extern void falcon_drain_tx_fifo(struct efx_nic *efx);
292 extern void falcon_reconfigure_mac_wrapper(struct efx_nic *efx);
293 extern bool falcon_xmac_check_fault(struct efx_nic *efx);
294 extern int falcon_reconfigure_xmac(struct efx_nic *efx);
295 extern void falcon_update_stats_xmac(struct efx_nic *efx);
297 /* Some statistics are computed as A - B where A and B each increase
298 * linearly with some hardware counter(s) and the counters are read
299 * asynchronously. If the counters contributing to B are always read
300 * after those contributing to A, the computed value may be lower than
301 * the true value by some variable amount, and may decrease between
302 * subsequent computations.
304 * We should never allow statistics to decrease or to exceed the true
305 * value. Since the computed value will never be greater than the
306 * true value, we can achieve this by only storing the computed value
309 static inline void efx_update_diff_stat(u64 *stat, u64 diff)
311 if ((s64)(diff - *stat) > 0)
315 /* Interrupts and test events */
316 extern int efx_nic_init_interrupt(struct efx_nic *efx);
317 extern void efx_nic_enable_interrupts(struct efx_nic *efx);
318 extern void efx_nic_event_test_start(struct efx_channel *channel);
319 extern void efx_nic_irq_test_start(struct efx_nic *efx);
320 extern void efx_nic_disable_interrupts(struct efx_nic *efx);
321 extern void efx_nic_fini_interrupt(struct efx_nic *efx);
322 extern irqreturn_t efx_nic_fatal_interrupt(struct efx_nic *efx);
323 extern irqreturn_t falcon_legacy_interrupt_a1(int irq, void *dev_id);
324 extern void falcon_irq_ack_a1(struct efx_nic *efx);
326 static inline int efx_nic_event_test_irq_cpu(struct efx_channel *channel)
328 return ACCESS_ONCE(channel->event_test_cpu);
330 static inline int efx_nic_irq_test_irq_cpu(struct efx_nic *efx)
332 return ACCESS_ONCE(efx->last_irq_cpu);
335 /* Global Resources */
336 extern int efx_nic_flush_queues(struct efx_nic *efx);
337 extern void falcon_start_nic_stats(struct efx_nic *efx);
338 extern void falcon_stop_nic_stats(struct efx_nic *efx);
339 extern void falcon_setup_xaui(struct efx_nic *efx);
340 extern int falcon_reset_xaui(struct efx_nic *efx);
342 efx_nic_dimension_resources(struct efx_nic *efx, unsigned sram_lim_qw);
343 extern void efx_nic_init_common(struct efx_nic *efx);
344 extern void efx_nic_push_rx_indir_table(struct efx_nic *efx);
346 int efx_nic_alloc_buffer(struct efx_nic *efx, struct efx_buffer *buffer,
348 void efx_nic_free_buffer(struct efx_nic *efx, struct efx_buffer *buffer);
351 struct efx_nic_register_test {
355 extern int efx_nic_test_registers(struct efx_nic *efx,
356 const struct efx_nic_register_test *regs,
359 extern size_t efx_nic_get_regs_len(struct efx_nic *efx);
360 extern void efx_nic_get_regs(struct efx_nic *efx, void *buf);
362 /**************************************************************************
366 **************************************************************************
369 #define FALCON_STAT_OFFSET(falcon_stat) EFX_VAL(falcon_stat, offset)
370 #define FALCON_STAT_WIDTH(falcon_stat) EFX_VAL(falcon_stat, WIDTH)
372 /* Retrieve statistic from statistics block */
373 #define FALCON_STAT(efx, falcon_stat, efx_stat) do { \
374 if (FALCON_STAT_WIDTH(falcon_stat) == 16) \
375 (efx)->mac_stats.efx_stat += le16_to_cpu( \
376 *((__force __le16 *) \
377 (efx->stats_buffer.addr + \
378 FALCON_STAT_OFFSET(falcon_stat)))); \
379 else if (FALCON_STAT_WIDTH(falcon_stat) == 32) \
380 (efx)->mac_stats.efx_stat += le32_to_cpu( \
381 *((__force __le32 *) \
382 (efx->stats_buffer.addr + \
383 FALCON_STAT_OFFSET(falcon_stat)))); \
385 (efx)->mac_stats.efx_stat += le64_to_cpu( \
386 *((__force __le64 *) \
387 (efx->stats_buffer.addr + \
388 FALCON_STAT_OFFSET(falcon_stat)))); \
391 #define FALCON_MAC_STATS_SIZE 0x100
393 #define MAC_DATA_LBN 0
394 #define MAC_DATA_WIDTH 32
396 extern void efx_generate_event(struct efx_nic *efx, unsigned int evq,
399 extern void falcon_poll_xmac(struct efx_nic *efx);
401 #endif /* EFX_NIC_H */