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8ceee660 BH |
1 | /**************************************************************************** |
2 | * Driver for Solarflare Solarstorm network controllers and boards | |
3 | * Copyright 2005-2006 Fen Systems Ltd. | |
0a6f40c6 | 4 | * Copyright 2006-2011 Solarflare Communications Inc. |
8ceee660 BH |
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 | ||
744093c9 BH |
11 | #ifndef EFX_NIC_H |
12 | #define EFX_NIC_H | |
8ceee660 | 13 | |
7c236c43 | 14 | #include <linux/net_tstamp.h> |
5c16a96c | 15 | #include <linux/i2c-algo-bit.h> |
8ceee660 | 16 | #include "net_driver.h" |
177dfcd8 | 17 | #include "efx.h" |
8880f4ec | 18 | #include "mcdi.h" |
4de92180 | 19 | #include "spi.h" |
8ceee660 BH |
20 | |
21 | /* | |
22 | * Falcon hardware control | |
23 | */ | |
24 | ||
daeda630 BH |
25 | enum { |
26 | EFX_REV_FALCON_A0 = 0, | |
27 | EFX_REV_FALCON_A1 = 1, | |
28 | EFX_REV_FALCON_B0 = 2, | |
8880f4ec | 29 | EFX_REV_SIENA_A0 = 3, |
8ceee660 BH |
30 | }; |
31 | ||
daeda630 | 32 | static inline int efx_nic_rev(struct efx_nic *efx) |
55668611 | 33 | { |
daeda630 | 34 | return efx->type->revision; |
55668611 | 35 | } |
8ceee660 | 36 | |
152b6a62 BH |
37 | extern u32 efx_nic_fpga_ver(struct efx_nic *efx); |
38 | ||
39 | /* NIC has two interlinked PCI functions for the same port. */ | |
40 | static inline bool efx_nic_is_dual_func(struct efx_nic *efx) | |
41 | { | |
42 | return efx_nic_rev(efx) < EFX_REV_FALCON_B0; | |
43 | } | |
44 | ||
c1c4f453 BH |
45 | enum { |
46 | PHY_TYPE_NONE = 0, | |
47 | PHY_TYPE_TXC43128 = 1, | |
48 | PHY_TYPE_88E1111 = 2, | |
49 | PHY_TYPE_SFX7101 = 3, | |
50 | PHY_TYPE_QT2022C2 = 4, | |
51 | PHY_TYPE_PM8358 = 6, | |
52 | PHY_TYPE_SFT9001A = 8, | |
53 | PHY_TYPE_QT2025C = 9, | |
54 | PHY_TYPE_SFT9001B = 10, | |
55 | }; | |
56 | ||
57 | #define FALCON_XMAC_LOOPBACKS \ | |
58 | ((1 << LOOPBACK_XGMII) | \ | |
59 | (1 << LOOPBACK_XGXS) | \ | |
60 | (1 << LOOPBACK_XAUI)) | |
61 | ||
62 | #define FALCON_GMAC_LOOPBACKS \ | |
63 | (1 << LOOPBACK_GMAC) | |
64 | ||
5b6262d0 BH |
65 | /* Alignment of PCIe DMA boundaries (4KB) */ |
66 | #define EFX_PAGE_SIZE 4096 | |
67 | /* Size and alignment of buffer table entries (same) */ | |
68 | #define EFX_BUF_SIZE EFX_PAGE_SIZE | |
69 | ||
3759433d | 70 | /** |
44838a44 BH |
71 | * struct falcon_board_type - board operations and type information |
72 | * @id: Board type id, as found in NVRAM | |
3759433d BH |
73 | * @init: Allocate resources and initialise peripheral hardware |
74 | * @init_phy: Do board-specific PHY initialisation | |
44838a44 | 75 | * @fini: Shut down hardware and free resources |
3759433d BH |
76 | * @set_id_led: Set state of identifying LED or revert to automatic function |
77 | * @monitor: Board-specific health check function | |
44838a44 BH |
78 | */ |
79 | struct falcon_board_type { | |
80 | u8 id; | |
44838a44 BH |
81 | int (*init) (struct efx_nic *nic); |
82 | void (*init_phy) (struct efx_nic *efx); | |
83 | void (*fini) (struct efx_nic *nic); | |
84 | void (*set_id_led) (struct efx_nic *efx, enum efx_led_mode mode); | |
85 | int (*monitor) (struct efx_nic *nic); | |
86 | }; | |
87 | ||
88 | /** | |
89 | * struct falcon_board - board information | |
90 | * @type: Type of board | |
91 | * @major: Major rev. ('A', 'B' ...) | |
92 | * @minor: Minor rev. (0, 1, ...) | |
e775fb93 BH |
93 | * @i2c_adap: I2C adapter for on-board peripherals |
94 | * @i2c_data: Data for bit-banging algorithm | |
3759433d BH |
95 | * @hwmon_client: I2C client for hardware monitor |
96 | * @ioexp_client: I2C client for power/port control | |
97 | */ | |
98 | struct falcon_board { | |
44838a44 | 99 | const struct falcon_board_type *type; |
3759433d BH |
100 | int major; |
101 | int minor; | |
e775fb93 BH |
102 | struct i2c_adapter i2c_adap; |
103 | struct i2c_algo_bit_data i2c_data; | |
3759433d BH |
104 | struct i2c_client *hwmon_client, *ioexp_client; |
105 | }; | |
106 | ||
5c16a96c BH |
107 | /** |
108 | * struct falcon_nic_data - Falcon NIC state | |
8986352a | 109 | * @pci_dev2: Secondary function of Falcon A |
3759433d | 110 | * @board: Board state and functions |
55edc6e6 BH |
111 | * @stats_disable_count: Nest count for disabling statistics fetches |
112 | * @stats_pending: Is there a pending DMA of MAC statistics. | |
113 | * @stats_timer: A timer for regularly fetching MAC statistics. | |
114 | * @stats_dma_done: Pointer to the flag which indicates DMA completion. | |
4de92180 BH |
115 | * @spi_flash: SPI flash device |
116 | * @spi_eeprom: SPI EEPROM device | |
117 | * @spi_lock: SPI bus lock | |
4833f02a | 118 | * @mdio_lock: MDIO bus lock |
cef68bde | 119 | * @xmac_poll_required: XMAC link state needs polling |
5c16a96c BH |
120 | */ |
121 | struct falcon_nic_data { | |
122 | struct pci_dev *pci_dev2; | |
3759433d | 123 | struct falcon_board board; |
55edc6e6 BH |
124 | unsigned int stats_disable_count; |
125 | bool stats_pending; | |
126 | struct timer_list stats_timer; | |
127 | u32 *stats_dma_done; | |
4de92180 BH |
128 | struct efx_spi_device spi_flash; |
129 | struct efx_spi_device spi_eeprom; | |
130 | struct mutex spi_lock; | |
4833f02a | 131 | struct mutex mdio_lock; |
cef68bde | 132 | bool xmac_poll_required; |
5c16a96c BH |
133 | }; |
134 | ||
278c0621 BH |
135 | static inline struct falcon_board *falcon_board(struct efx_nic *efx) |
136 | { | |
3759433d BH |
137 | struct falcon_nic_data *data = efx->nic_data; |
138 | return &data->board; | |
278c0621 BH |
139 | } |
140 | ||
8880f4ec BH |
141 | /** |
142 | * struct siena_nic_data - Siena NIC state | |
8880f4ec BH |
143 | * @mcdi: Management-Controller-to-Driver Interface |
144 | * @wol_filter_id: Wake-on-LAN packet filter id | |
55c5e0f8 | 145 | * @hwmon: Hardware monitor state |
8880f4ec BH |
146 | */ |
147 | struct siena_nic_data { | |
8880f4ec BH |
148 | struct efx_mcdi_iface mcdi; |
149 | int wol_filter_id; | |
55c5e0f8 BH |
150 | #ifdef CONFIG_SFC_MCDI_MON |
151 | struct efx_mcdi_mon hwmon; | |
152 | #endif | |
8880f4ec BH |
153 | }; |
154 | ||
55c5e0f8 BH |
155 | #ifdef CONFIG_SFC_MCDI_MON |
156 | static inline struct efx_mcdi_mon *efx_mcdi_mon(struct efx_nic *efx) | |
157 | { | |
158 | struct siena_nic_data *nic_data; | |
159 | EFX_BUG_ON_PARANOID(efx_nic_rev(efx) < EFX_REV_SIENA_A0); | |
160 | nic_data = efx->nic_data; | |
161 | return &nic_data->hwmon; | |
162 | } | |
163 | #endif | |
164 | ||
cd2d5b52 BH |
165 | /* |
166 | * On the SFC9000 family each port is associated with 1 PCI physical | |
167 | * function (PF) handled by sfc and a configurable number of virtual | |
168 | * functions (VFs) that may be handled by some other driver, often in | |
169 | * a VM guest. The queue pointer registers are mapped in both PF and | |
170 | * VF BARs such that an 8K region provides access to a single RX, TX | |
171 | * and event queue (collectively a Virtual Interface, VI or VNIC). | |
172 | * | |
173 | * The PF has access to all 1024 VIs while VFs are mapped to VIs | |
174 | * according to VI_BASE and VI_SCALE: VF i has access to VIs numbered | |
175 | * in range [VI_BASE + i << VI_SCALE, VI_BASE + i + 1 << VI_SCALE). | |
176 | * The number of VIs and the VI_SCALE value are configurable but must | |
177 | * be established at boot time by firmware. | |
178 | */ | |
179 | ||
180 | /* Maximum VI_SCALE parameter supported by Siena */ | |
181 | #define EFX_VI_SCALE_MAX 6 | |
182 | /* Base VI to use for SR-IOV. Must be aligned to (1 << EFX_VI_SCALE_MAX), | |
183 | * so this is the smallest allowed value. */ | |
184 | #define EFX_VI_BASE 128U | |
185 | /* Maximum number of VFs allowed */ | |
186 | #define EFX_VF_COUNT_MAX 127 | |
187 | /* Limit EVQs on VFs to be only 8k to reduce buffer table reservation */ | |
188 | #define EFX_MAX_VF_EVQ_SIZE 8192UL | |
189 | /* The number of buffer table entries reserved for each VI on a VF */ | |
190 | #define EFX_VF_BUFTBL_PER_VI \ | |
191 | ((EFX_MAX_VF_EVQ_SIZE + 2 * EFX_MAX_DMAQ_SIZE) * \ | |
192 | sizeof(efx_qword_t) / EFX_BUF_SIZE) | |
193 | ||
194 | #ifdef CONFIG_SFC_SRIOV | |
195 | ||
196 | static inline bool efx_sriov_wanted(struct efx_nic *efx) | |
197 | { | |
198 | return efx->vf_count != 0; | |
199 | } | |
200 | static inline bool efx_sriov_enabled(struct efx_nic *efx) | |
201 | { | |
202 | return efx->vf_init_count != 0; | |
203 | } | |
204 | static inline unsigned int efx_vf_size(struct efx_nic *efx) | |
205 | { | |
206 | return 1 << efx->vi_scale; | |
207 | } | |
208 | ||
209 | extern int efx_init_sriov(void); | |
210 | extern void efx_sriov_probe(struct efx_nic *efx); | |
211 | extern int efx_sriov_init(struct efx_nic *efx); | |
212 | extern void efx_sriov_mac_address_changed(struct efx_nic *efx); | |
213 | extern void efx_sriov_tx_flush_done(struct efx_nic *efx, efx_qword_t *event); | |
214 | extern void efx_sriov_rx_flush_done(struct efx_nic *efx, efx_qword_t *event); | |
215 | extern void efx_sriov_event(struct efx_channel *channel, efx_qword_t *event); | |
216 | extern void efx_sriov_desc_fetch_err(struct efx_nic *efx, unsigned dmaq); | |
217 | extern void efx_sriov_flr(struct efx_nic *efx, unsigned flr); | |
218 | extern void efx_sriov_reset(struct efx_nic *efx); | |
219 | extern void efx_sriov_fini(struct efx_nic *efx); | |
220 | extern void efx_fini_sriov(void); | |
221 | ||
222 | #else | |
223 | ||
224 | static inline bool efx_sriov_wanted(struct efx_nic *efx) { return false; } | |
225 | static inline bool efx_sriov_enabled(struct efx_nic *efx) { return false; } | |
226 | static inline unsigned int efx_vf_size(struct efx_nic *efx) { return 0; } | |
227 | ||
228 | static inline int efx_init_sriov(void) { return 0; } | |
229 | static inline void efx_sriov_probe(struct efx_nic *efx) {} | |
230 | static inline int efx_sriov_init(struct efx_nic *efx) { return -EOPNOTSUPP; } | |
231 | static inline void efx_sriov_mac_address_changed(struct efx_nic *efx) {} | |
232 | static inline void efx_sriov_tx_flush_done(struct efx_nic *efx, | |
233 | efx_qword_t *event) {} | |
234 | static inline void efx_sriov_rx_flush_done(struct efx_nic *efx, | |
235 | efx_qword_t *event) {} | |
236 | static inline void efx_sriov_event(struct efx_channel *channel, | |
237 | efx_qword_t *event) {} | |
238 | static inline void efx_sriov_desc_fetch_err(struct efx_nic *efx, unsigned dmaq) {} | |
239 | static inline void efx_sriov_flr(struct efx_nic *efx, unsigned flr) {} | |
240 | static inline void efx_sriov_reset(struct efx_nic *efx) {} | |
241 | static inline void efx_sriov_fini(struct efx_nic *efx) {} | |
242 | static inline void efx_fini_sriov(void) {} | |
243 | ||
244 | #endif | |
245 | ||
246 | extern int efx_sriov_set_vf_mac(struct net_device *dev, int vf, u8 *mac); | |
247 | extern int efx_sriov_set_vf_vlan(struct net_device *dev, int vf, | |
248 | u16 vlan, u8 qos); | |
249 | extern int efx_sriov_get_vf_config(struct net_device *dev, int vf, | |
250 | struct ifla_vf_info *ivf); | |
251 | extern int efx_sriov_set_vf_spoofchk(struct net_device *net_dev, int vf, | |
252 | bool spoofchk); | |
253 | ||
7c236c43 | 254 | struct ethtool_ts_info; |
7c236c43 SH |
255 | extern void efx_ptp_probe(struct efx_nic *efx); |
256 | extern int efx_ptp_ioctl(struct efx_nic *efx, struct ifreq *ifr, int cmd); | |
62ebac92 BH |
257 | extern void efx_ptp_get_ts_info(struct efx_nic *efx, |
258 | struct ethtool_ts_info *ts_info); | |
7c236c43 SH |
259 | extern bool efx_ptp_is_ptp_tx(struct efx_nic *efx, struct sk_buff *skb); |
260 | extern int efx_ptp_tx(struct efx_nic *efx, struct sk_buff *skb); | |
261 | extern void efx_ptp_event(struct efx_nic *efx, efx_qword_t *ev); | |
7c236c43 | 262 | |
6c8c2513 | 263 | extern const struct efx_nic_type falcon_a1_nic_type; |
264 | extern const struct efx_nic_type falcon_b0_nic_type; | |
265 | extern const struct efx_nic_type siena_a0_nic_type; | |
8ceee660 BH |
266 | |
267 | /************************************************************************** | |
268 | * | |
269 | * Externs | |
270 | * | |
271 | ************************************************************************** | |
272 | */ | |
273 | ||
e41c11ee | 274 | extern int falcon_probe_board(struct efx_nic *efx, u16 revision_info); |
5087b54d | 275 | |
8ceee660 | 276 | /* TX data path */ |
152b6a62 BH |
277 | extern int efx_nic_probe_tx(struct efx_tx_queue *tx_queue); |
278 | extern void efx_nic_init_tx(struct efx_tx_queue *tx_queue); | |
279 | extern void efx_nic_fini_tx(struct efx_tx_queue *tx_queue); | |
280 | extern void efx_nic_remove_tx(struct efx_tx_queue *tx_queue); | |
281 | extern void efx_nic_push_buffers(struct efx_tx_queue *tx_queue); | |
8ceee660 BH |
282 | |
283 | /* RX data path */ | |
152b6a62 BH |
284 | extern int efx_nic_probe_rx(struct efx_rx_queue *rx_queue); |
285 | extern void efx_nic_init_rx(struct efx_rx_queue *rx_queue); | |
286 | extern void efx_nic_fini_rx(struct efx_rx_queue *rx_queue); | |
287 | extern void efx_nic_remove_rx(struct efx_rx_queue *rx_queue); | |
288 | extern void efx_nic_notify_rx_desc(struct efx_rx_queue *rx_queue); | |
2ae75dac | 289 | extern void efx_nic_generate_fill_event(struct efx_rx_queue *rx_queue); |
8ceee660 BH |
290 | |
291 | /* Event data path */ | |
152b6a62 BH |
292 | extern int efx_nic_probe_eventq(struct efx_channel *channel); |
293 | extern void efx_nic_init_eventq(struct efx_channel *channel); | |
294 | extern void efx_nic_fini_eventq(struct efx_channel *channel); | |
295 | extern void efx_nic_remove_eventq(struct efx_channel *channel); | |
296 | extern int efx_nic_process_eventq(struct efx_channel *channel, int rx_quota); | |
297 | extern void efx_nic_eventq_read_ack(struct efx_channel *channel); | |
d4fabcc8 | 298 | extern bool efx_nic_event_present(struct efx_channel *channel); |
8ceee660 | 299 | |
8ceee660 | 300 | /* MAC/PHY */ |
8ceee660 | 301 | extern void falcon_drain_tx_fifo(struct efx_nic *efx); |
8ceee660 | 302 | extern void falcon_reconfigure_mac_wrapper(struct efx_nic *efx); |
710b208d BH |
303 | extern bool falcon_xmac_check_fault(struct efx_nic *efx); |
304 | extern int falcon_reconfigure_xmac(struct efx_nic *efx); | |
305 | extern void falcon_update_stats_xmac(struct efx_nic *efx); | |
8ceee660 | 306 | |
b7f514af BH |
307 | /* Some statistics are computed as A - B where A and B each increase |
308 | * linearly with some hardware counter(s) and the counters are read | |
309 | * asynchronously. If the counters contributing to B are always read | |
310 | * after those contributing to A, the computed value may be lower than | |
311 | * the true value by some variable amount, and may decrease between | |
312 | * subsequent computations. | |
313 | * | |
314 | * We should never allow statistics to decrease or to exceed the true | |
315 | * value. Since the computed value will never be greater than the | |
316 | * true value, we can achieve this by only storing the computed value | |
317 | * when it increases. | |
318 | */ | |
319 | static inline void efx_update_diff_stat(u64 *stat, u64 diff) | |
320 | { | |
321 | if ((s64)(diff - *stat) > 0) | |
322 | *stat = diff; | |
323 | } | |
324 | ||
8ceee660 | 325 | /* Interrupts and test events */ |
152b6a62 BH |
326 | extern int efx_nic_init_interrupt(struct efx_nic *efx); |
327 | extern void efx_nic_enable_interrupts(struct efx_nic *efx); | |
eee6f6a9 BH |
328 | extern void efx_nic_event_test_start(struct efx_channel *channel); |
329 | extern void efx_nic_irq_test_start(struct efx_nic *efx); | |
152b6a62 BH |
330 | extern void efx_nic_disable_interrupts(struct efx_nic *efx); |
331 | extern void efx_nic_fini_interrupt(struct efx_nic *efx); | |
332 | extern irqreturn_t efx_nic_fatal_interrupt(struct efx_nic *efx); | |
333 | extern irqreturn_t falcon_legacy_interrupt_a1(int irq, void *dev_id); | |
334 | extern void falcon_irq_ack_a1(struct efx_nic *efx); | |
335 | ||
eee6f6a9 BH |
336 | static inline int efx_nic_event_test_irq_cpu(struct efx_channel *channel) |
337 | { | |
dd40781e | 338 | return ACCESS_ONCE(channel->event_test_cpu); |
eee6f6a9 BH |
339 | } |
340 | static inline int efx_nic_irq_test_irq_cpu(struct efx_nic *efx) | |
341 | { | |
342 | return ACCESS_ONCE(efx->last_irq_cpu); | |
343 | } | |
344 | ||
8ceee660 | 345 | /* Global Resources */ |
152b6a62 | 346 | extern int efx_nic_flush_queues(struct efx_nic *efx); |
d5e8cc6c BH |
347 | extern void siena_prepare_flush(struct efx_nic *efx); |
348 | extern void siena_finish_flush(struct efx_nic *efx); | |
55edc6e6 BH |
349 | extern void falcon_start_nic_stats(struct efx_nic *efx); |
350 | extern void falcon_stop_nic_stats(struct efx_nic *efx); | |
b7b40eeb | 351 | extern void falcon_setup_xaui(struct efx_nic *efx); |
8ceee660 | 352 | extern int falcon_reset_xaui(struct efx_nic *efx); |
28e47c49 BH |
353 | extern void |
354 | efx_nic_dimension_resources(struct efx_nic *efx, unsigned sram_lim_qw); | |
152b6a62 | 355 | extern void efx_nic_init_common(struct efx_nic *efx); |
765c9f46 | 356 | extern void efx_nic_push_rx_indir_table(struct efx_nic *efx); |
152b6a62 BH |
357 | |
358 | int efx_nic_alloc_buffer(struct efx_nic *efx, struct efx_buffer *buffer, | |
359 | unsigned int len); | |
360 | void efx_nic_free_buffer(struct efx_nic *efx, struct efx_buffer *buffer); | |
8ceee660 | 361 | |
8c8661e4 | 362 | /* Tests */ |
152b6a62 BH |
363 | struct efx_nic_register_test { |
364 | unsigned address; | |
365 | efx_oword_t mask; | |
366 | }; | |
367 | extern int efx_nic_test_registers(struct efx_nic *efx, | |
368 | const struct efx_nic_register_test *regs, | |
369 | size_t n_regs); | |
8c8661e4 | 370 | |
5b98c1bf BH |
371 | extern size_t efx_nic_get_regs_len(struct efx_nic *efx); |
372 | extern void efx_nic_get_regs(struct efx_nic *efx, void *buf); | |
373 | ||
8ceee660 BH |
374 | /************************************************************************** |
375 | * | |
376 | * Falcon MAC stats | |
377 | * | |
378 | ************************************************************************** | |
379 | */ | |
380 | ||
381 | #define FALCON_STAT_OFFSET(falcon_stat) EFX_VAL(falcon_stat, offset) | |
382 | #define FALCON_STAT_WIDTH(falcon_stat) EFX_VAL(falcon_stat, WIDTH) | |
383 | ||
384 | /* Retrieve statistic from statistics block */ | |
385 | #define FALCON_STAT(efx, falcon_stat, efx_stat) do { \ | |
386 | if (FALCON_STAT_WIDTH(falcon_stat) == 16) \ | |
387 | (efx)->mac_stats.efx_stat += le16_to_cpu( \ | |
388 | *((__force __le16 *) \ | |
389 | (efx->stats_buffer.addr + \ | |
390 | FALCON_STAT_OFFSET(falcon_stat)))); \ | |
391 | else if (FALCON_STAT_WIDTH(falcon_stat) == 32) \ | |
392 | (efx)->mac_stats.efx_stat += le32_to_cpu( \ | |
393 | *((__force __le32 *) \ | |
394 | (efx->stats_buffer.addr + \ | |
395 | FALCON_STAT_OFFSET(falcon_stat)))); \ | |
396 | else \ | |
397 | (efx)->mac_stats.efx_stat += le64_to_cpu( \ | |
398 | *((__force __le64 *) \ | |
399 | (efx->stats_buffer.addr + \ | |
400 | FALCON_STAT_OFFSET(falcon_stat)))); \ | |
401 | } while (0) | |
402 | ||
403 | #define FALCON_MAC_STATS_SIZE 0x100 | |
404 | ||
405 | #define MAC_DATA_LBN 0 | |
406 | #define MAC_DATA_WIDTH 32 | |
407 | ||
90893000 BH |
408 | extern void efx_generate_event(struct efx_nic *efx, unsigned int evq, |
409 | efx_qword_t *event); | |
8ceee660 | 410 | |
9007b9fa BH |
411 | extern void falcon_poll_xmac(struct efx_nic *efx); |
412 | ||
744093c9 | 413 | #endif /* EFX_NIC_H */ |