1 /****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2005-2006 Fen Systems Ltd.
4 * Copyright 2006-2010 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 #include <linux/bitops.h>
12 #include <linux/delay.h>
13 #include <linux/pci.h>
14 #include <linux/module.h>
15 #include <linux/slab.h>
16 #include <linux/random.h>
17 #include "net_driver.h"
18 #include "bitfield.h"
19 #include "efx.h"
20 #include "nic.h"
21 #include "mac.h"
22 #include "spi.h"
23 #include "regs.h"
24 #include "io.h"
25 #include "phy.h"
26 #include "workarounds.h"
27 #include "mcdi.h"
28 #include "mcdi_pcol.h"
29
30 /* Hardware control for SFC9000 family including SFL9021 (aka Siena). */
31
32 static void siena_init_wol(struct efx_nic *efx);
33
34
siena_push_irq_moderation(struct efx_channel * channel)35 static void siena_push_irq_moderation(struct efx_channel *channel)
36 {
37 efx_dword_t timer_cmd;
38
39 BUILD_BUG_ON(EFX_IRQ_MOD_MAX > (1 << FRF_CZ_TC_TIMER_VAL_WIDTH));
40
41 if (channel->irq_moderation)
42 EFX_POPULATE_DWORD_2(timer_cmd,
43 FRF_CZ_TC_TIMER_MODE,
44 FFE_CZ_TIMER_MODE_INT_HLDOFF,
45 FRF_CZ_TC_TIMER_VAL,
46 channel->irq_moderation - 1);
47 else
48 EFX_POPULATE_DWORD_2(timer_cmd,
49 FRF_CZ_TC_TIMER_MODE,
50 FFE_CZ_TIMER_MODE_DIS,
51 FRF_CZ_TC_TIMER_VAL, 0);
52 efx_writed_page_locked(channel->efx, &timer_cmd, FR_BZ_TIMER_COMMAND_P0,
53 channel->channel);
54 }
55
siena_push_multicast_hash(struct efx_nic * efx)56 static void siena_push_multicast_hash(struct efx_nic *efx)
57 {
58 WARN_ON(!mutex_is_locked(&efx->mac_lock));
59
60 efx_mcdi_rpc(efx, MC_CMD_SET_MCAST_HASH,
61 efx->multicast_hash.byte, sizeof(efx->multicast_hash),
62 NULL, 0, NULL);
63 }
64
siena_mdio_write(struct net_device * net_dev,int prtad,int devad,u16 addr,u16 value)65 static int siena_mdio_write(struct net_device *net_dev,
66 int prtad, int devad, u16 addr, u16 value)
67 {
68 struct efx_nic *efx = netdev_priv(net_dev);
69 uint32_t status;
70 int rc;
71
72 rc = efx_mcdi_mdio_write(efx, efx->mdio_bus, prtad, devad,
73 addr, value, &status);
74 if (rc)
75 return rc;
76 if (status != MC_CMD_MDIO_STATUS_GOOD)
77 return -EIO;
78
79 return 0;
80 }
81
siena_mdio_read(struct net_device * net_dev,int prtad,int devad,u16 addr)82 static int siena_mdio_read(struct net_device *net_dev,
83 int prtad, int devad, u16 addr)
84 {
85 struct efx_nic *efx = netdev_priv(net_dev);
86 uint16_t value;
87 uint32_t status;
88 int rc;
89
90 rc = efx_mcdi_mdio_read(efx, efx->mdio_bus, prtad, devad,
91 addr, &value, &status);
92 if (rc)
93 return rc;
94 if (status != MC_CMD_MDIO_STATUS_GOOD)
95 return -EIO;
96
97 return (int)value;
98 }
99
100 /* This call is responsible for hooking in the MAC and PHY operations */
siena_probe_port(struct efx_nic * efx)101 static int siena_probe_port(struct efx_nic *efx)
102 {
103 int rc;
104
105 /* Hook in PHY operations table */
106 efx->phy_op = &efx_mcdi_phy_ops;
107
108 /* Set up MDIO structure for PHY */
109 efx->mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
110 efx->mdio.mdio_read = siena_mdio_read;
111 efx->mdio.mdio_write = siena_mdio_write;
112
113 /* Fill out MDIO structure, loopback modes, and initial link state */
114 rc = efx->phy_op->probe(efx);
115 if (rc != 0)
116 return rc;
117
118 /* Allocate buffer for stats */
119 rc = efx_nic_alloc_buffer(efx, &efx->stats_buffer,
120 MC_CMD_MAC_NSTATS * sizeof(u64));
121 if (rc)
122 return rc;
123 netif_dbg(efx, probe, efx->net_dev,
124 "stats buffer at %llx (virt %p phys %llx)\n",
125 (u64)efx->stats_buffer.dma_addr,
126 efx->stats_buffer.addr,
127 (u64)virt_to_phys(efx->stats_buffer.addr));
128
129 efx_mcdi_mac_stats(efx, efx->stats_buffer.dma_addr, 0, 0, 1);
130
131 return 0;
132 }
133
siena_remove_port(struct efx_nic * efx)134 static void siena_remove_port(struct efx_nic *efx)
135 {
136 efx->phy_op->remove(efx);
137 efx_nic_free_buffer(efx, &efx->stats_buffer);
138 }
139
140 static const struct efx_nic_register_test siena_register_tests[] = {
141 { FR_AZ_ADR_REGION,
142 EFX_OWORD32(0x0003FFFF, 0x0003FFFF, 0x0003FFFF, 0x0003FFFF) },
143 { FR_CZ_USR_EV_CFG,
144 EFX_OWORD32(0x000103FF, 0x00000000, 0x00000000, 0x00000000) },
145 { FR_AZ_RX_CFG,
146 EFX_OWORD32(0xFFFFFFFE, 0xFFFFFFFF, 0x0003FFFF, 0x00000000) },
147 { FR_AZ_TX_CFG,
148 EFX_OWORD32(0x7FFF0037, 0xFFFF8000, 0xFFFFFFFF, 0x03FFFFFF) },
149 { FR_AZ_TX_RESERVED,
150 EFX_OWORD32(0xFFFEFE80, 0x1FFFFFFF, 0x020000FE, 0x007FFFFF) },
151 { FR_AZ_SRM_TX_DC_CFG,
152 EFX_OWORD32(0x001FFFFF, 0x00000000, 0x00000000, 0x00000000) },
153 { FR_AZ_RX_DC_CFG,
154 EFX_OWORD32(0x00000003, 0x00000000, 0x00000000, 0x00000000) },
155 { FR_AZ_RX_DC_PF_WM,
156 EFX_OWORD32(0x000003FF, 0x00000000, 0x00000000, 0x00000000) },
157 { FR_BZ_DP_CTRL,
158 EFX_OWORD32(0x00000FFF, 0x00000000, 0x00000000, 0x00000000) },
159 { FR_BZ_RX_RSS_TKEY,
160 EFX_OWORD32(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF) },
161 { FR_CZ_RX_RSS_IPV6_REG1,
162 EFX_OWORD32(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF) },
163 { FR_CZ_RX_RSS_IPV6_REG2,
164 EFX_OWORD32(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF) },
165 { FR_CZ_RX_RSS_IPV6_REG3,
166 EFX_OWORD32(0xFFFFFFFF, 0xFFFFFFFF, 0x00000007, 0x00000000) },
167 };
168
siena_test_registers(struct efx_nic * efx)169 static int siena_test_registers(struct efx_nic *efx)
170 {
171 return efx_nic_test_registers(efx, siena_register_tests,
172 ARRAY_SIZE(siena_register_tests));
173 }
174
175 /**************************************************************************
176 *
177 * Device reset
178 *
179 **************************************************************************
180 */
181
siena_map_reset_reason(enum reset_type reason)182 static enum reset_type siena_map_reset_reason(enum reset_type reason)
183 {
184 return RESET_TYPE_ALL;
185 }
186
siena_map_reset_flags(u32 * flags)187 static int siena_map_reset_flags(u32 *flags)
188 {
189 enum {
190 SIENA_RESET_PORT = (ETH_RESET_DMA | ETH_RESET_FILTER |
191 ETH_RESET_OFFLOAD | ETH_RESET_MAC |
192 ETH_RESET_PHY),
193 SIENA_RESET_MC = (SIENA_RESET_PORT |
194 ETH_RESET_MGMT << ETH_RESET_SHARED_SHIFT),
195 };
196
197 if ((*flags & SIENA_RESET_MC) == SIENA_RESET_MC) {
198 *flags &= ~SIENA_RESET_MC;
199 return RESET_TYPE_WORLD;
200 }
201
202 if ((*flags & SIENA_RESET_PORT) == SIENA_RESET_PORT) {
203 *flags &= ~SIENA_RESET_PORT;
204 return RESET_TYPE_ALL;
205 }
206
207 /* no invisible reset implemented */
208
209 return -EINVAL;
210 }
211
siena_reset_hw(struct efx_nic * efx,enum reset_type method)212 static int siena_reset_hw(struct efx_nic *efx, enum reset_type method)
213 {
214 int rc;
215
216 /* Recover from a failed assertion pre-reset */
217 rc = efx_mcdi_handle_assertion(efx);
218 if (rc)
219 return rc;
220
221 if (method == RESET_TYPE_WORLD)
222 return efx_mcdi_reset_mc(efx);
223 else
224 return efx_mcdi_reset_port(efx);
225 }
226
siena_probe_nvconfig(struct efx_nic * efx)227 static int siena_probe_nvconfig(struct efx_nic *efx)
228 {
229 return efx_mcdi_get_board_cfg(efx, efx->net_dev->perm_addr, NULL);
230 }
231
siena_probe_nic(struct efx_nic * efx)232 static int siena_probe_nic(struct efx_nic *efx)
233 {
234 struct siena_nic_data *nic_data;
235 bool already_attached = false;
236 efx_oword_t reg;
237 int rc;
238
239 /* Allocate storage for hardware specific data */
240 nic_data = kzalloc(sizeof(struct siena_nic_data), GFP_KERNEL);
241 if (!nic_data)
242 return -ENOMEM;
243 efx->nic_data = nic_data;
244
245 if (efx_nic_fpga_ver(efx) != 0) {
246 netif_err(efx, probe, efx->net_dev,
247 "Siena FPGA not supported\n");
248 rc = -ENODEV;
249 goto fail1;
250 }
251
252 efx_reado(efx, ®, FR_AZ_CS_DEBUG);
253 efx->net_dev->dev_id = EFX_OWORD_FIELD(reg, FRF_CZ_CS_PORT_NUM) - 1;
254
255 efx_mcdi_init(efx);
256
257 /* Recover from a failed assertion before probing */
258 rc = efx_mcdi_handle_assertion(efx);
259 if (rc)
260 goto fail1;
261
262 /* Let the BMC know that the driver is now in charge of link and
263 * filter settings. We must do this before we reset the NIC */
264 rc = efx_mcdi_drv_attach(efx, true, &already_attached);
265 if (rc) {
266 netif_err(efx, probe, efx->net_dev,
267 "Unable to register driver with MCPU\n");
268 goto fail2;
269 }
270 if (already_attached)
271 /* Not a fatal error */
272 netif_err(efx, probe, efx->net_dev,
273 "Host already registered with MCPU\n");
274
275 /* Now we can reset the NIC */
276 rc = siena_reset_hw(efx, RESET_TYPE_ALL);
277 if (rc) {
278 netif_err(efx, probe, efx->net_dev, "failed to reset NIC\n");
279 goto fail3;
280 }
281
282 siena_init_wol(efx);
283
284 /* Allocate memory for INT_KER */
285 rc = efx_nic_alloc_buffer(efx, &efx->irq_status, sizeof(efx_oword_t));
286 if (rc)
287 goto fail4;
288 BUG_ON(efx->irq_status.dma_addr & 0x0f);
289
290 netif_dbg(efx, probe, efx->net_dev,
291 "INT_KER at %llx (virt %p phys %llx)\n",
292 (unsigned long long)efx->irq_status.dma_addr,
293 efx->irq_status.addr,
294 (unsigned long long)virt_to_phys(efx->irq_status.addr));
295
296 /* Read in the non-volatile configuration */
297 rc = siena_probe_nvconfig(efx);
298 if (rc == -EINVAL) {
299 netif_err(efx, probe, efx->net_dev,
300 "NVRAM is invalid therefore using defaults\n");
301 efx->phy_type = PHY_TYPE_NONE;
302 efx->mdio.prtad = MDIO_PRTAD_NONE;
303 } else if (rc) {
304 goto fail5;
305 }
306
307 return 0;
308
309 fail5:
310 efx_nic_free_buffer(efx, &efx->irq_status);
311 fail4:
312 fail3:
313 efx_mcdi_drv_attach(efx, false, NULL);
314 fail2:
315 fail1:
316 kfree(efx->nic_data);
317 return rc;
318 }
319
320 /* This call performs hardware-specific global initialisation, such as
321 * defining the descriptor cache sizes and number of RSS channels.
322 * It does not set up any buffers, descriptor rings or event queues.
323 */
siena_init_nic(struct efx_nic * efx)324 static int siena_init_nic(struct efx_nic *efx)
325 {
326 efx_oword_t temp;
327 int rc;
328
329 /* Recover from a failed assertion post-reset */
330 rc = efx_mcdi_handle_assertion(efx);
331 if (rc)
332 return rc;
333
334 /* Squash TX of packets of 16 bytes or less */
335 efx_reado(efx, &temp, FR_AZ_TX_RESERVED);
336 EFX_SET_OWORD_FIELD(temp, FRF_BZ_TX_FLUSH_MIN_LEN_EN, 1);
337 efx_writeo(efx, &temp, FR_AZ_TX_RESERVED);
338
339 /* Do not enable TX_NO_EOP_DISC_EN, since it limits packets to 16
340 * descriptors (which is bad).
341 */
342 efx_reado(efx, &temp, FR_AZ_TX_CFG);
343 EFX_SET_OWORD_FIELD(temp, FRF_AZ_TX_NO_EOP_DISC_EN, 0);
344 EFX_SET_OWORD_FIELD(temp, FRF_CZ_TX_FILTER_EN_BIT, 1);
345 efx_writeo(efx, &temp, FR_AZ_TX_CFG);
346
347 efx_reado(efx, &temp, FR_AZ_RX_CFG);
348 EFX_SET_OWORD_FIELD(temp, FRF_BZ_RX_DESC_PUSH_EN, 0);
349 EFX_SET_OWORD_FIELD(temp, FRF_BZ_RX_INGR_EN, 1);
350 /* Enable hash insertion. This is broken for the 'Falcon' hash
351 * if IPv6 hashing is also enabled, so also select Toeplitz
352 * TCP/IPv4 and IPv4 hashes. */
353 EFX_SET_OWORD_FIELD(temp, FRF_BZ_RX_HASH_INSRT_HDR, 1);
354 EFX_SET_OWORD_FIELD(temp, FRF_BZ_RX_HASH_ALG, 1);
355 EFX_SET_OWORD_FIELD(temp, FRF_BZ_RX_IP_HASH, 1);
356 efx_writeo(efx, &temp, FR_AZ_RX_CFG);
357
358 /* Set hash key for IPv4 */
359 memcpy(&temp, efx->rx_hash_key, sizeof(temp));
360 efx_writeo(efx, &temp, FR_BZ_RX_RSS_TKEY);
361
362 /* Enable IPv6 RSS */
363 BUILD_BUG_ON(sizeof(efx->rx_hash_key) <
364 2 * sizeof(temp) + FRF_CZ_RX_RSS_IPV6_TKEY_HI_WIDTH / 8 ||
365 FRF_CZ_RX_RSS_IPV6_TKEY_HI_LBN != 0);
366 memcpy(&temp, efx->rx_hash_key, sizeof(temp));
367 efx_writeo(efx, &temp, FR_CZ_RX_RSS_IPV6_REG1);
368 memcpy(&temp, efx->rx_hash_key + sizeof(temp), sizeof(temp));
369 efx_writeo(efx, &temp, FR_CZ_RX_RSS_IPV6_REG2);
370 EFX_POPULATE_OWORD_2(temp, FRF_CZ_RX_RSS_IPV6_THASH_ENABLE, 1,
371 FRF_CZ_RX_RSS_IPV6_IP_THASH_ENABLE, 1);
372 memcpy(&temp, efx->rx_hash_key + 2 * sizeof(temp),
373 FRF_CZ_RX_RSS_IPV6_TKEY_HI_WIDTH / 8);
374 efx_writeo(efx, &temp, FR_CZ_RX_RSS_IPV6_REG3);
375
376 /* Enable event logging */
377 rc = efx_mcdi_log_ctrl(efx, true, false, 0);
378 if (rc)
379 return rc;
380
381 /* Set destination of both TX and RX Flush events */
382 EFX_POPULATE_OWORD_1(temp, FRF_BZ_FLS_EVQ_ID, 0);
383 efx_writeo(efx, &temp, FR_BZ_DP_CTRL);
384
385 EFX_POPULATE_OWORD_1(temp, FRF_CZ_USREV_DIS, 1);
386 efx_writeo(efx, &temp, FR_CZ_USR_EV_CFG);
387
388 efx_nic_init_common(efx);
389 return 0;
390 }
391
siena_remove_nic(struct efx_nic * efx)392 static void siena_remove_nic(struct efx_nic *efx)
393 {
394 efx_nic_free_buffer(efx, &efx->irq_status);
395
396 siena_reset_hw(efx, RESET_TYPE_ALL);
397
398 /* Relinquish the device back to the BMC */
399 if (efx_nic_has_mc(efx))
400 efx_mcdi_drv_attach(efx, false, NULL);
401
402 /* Tear down the private nic state */
403 kfree(efx->nic_data);
404 efx->nic_data = NULL;
405 }
406
407 #define STATS_GENERATION_INVALID ((__force __le64)(-1))
408
siena_try_update_nic_stats(struct efx_nic * efx)409 static int siena_try_update_nic_stats(struct efx_nic *efx)
410 {
411 __le64 *dma_stats;
412 struct efx_mac_stats *mac_stats;
413 __le64 generation_start, generation_end;
414
415 mac_stats = &efx->mac_stats;
416 dma_stats = efx->stats_buffer.addr;
417
418 generation_end = dma_stats[MC_CMD_MAC_GENERATION_END];
419 if (generation_end == STATS_GENERATION_INVALID)
420 return 0;
421 rmb();
422
423 #define MAC_STAT(M, D) \
424 mac_stats->M = le64_to_cpu(dma_stats[MC_CMD_MAC_ ## D])
425
426 MAC_STAT(tx_bytes, TX_BYTES);
427 MAC_STAT(tx_bad_bytes, TX_BAD_BYTES);
428 mac_stats->tx_good_bytes = (mac_stats->tx_bytes -
429 mac_stats->tx_bad_bytes);
430 MAC_STAT(tx_packets, TX_PKTS);
431 MAC_STAT(tx_bad, TX_BAD_FCS_PKTS);
432 MAC_STAT(tx_pause, TX_PAUSE_PKTS);
433 MAC_STAT(tx_control, TX_CONTROL_PKTS);
434 MAC_STAT(tx_unicast, TX_UNICAST_PKTS);
435 MAC_STAT(tx_multicast, TX_MULTICAST_PKTS);
436 MAC_STAT(tx_broadcast, TX_BROADCAST_PKTS);
437 MAC_STAT(tx_lt64, TX_LT64_PKTS);
438 MAC_STAT(tx_64, TX_64_PKTS);
439 MAC_STAT(tx_65_to_127, TX_65_TO_127_PKTS);
440 MAC_STAT(tx_128_to_255, TX_128_TO_255_PKTS);
441 MAC_STAT(tx_256_to_511, TX_256_TO_511_PKTS);
442 MAC_STAT(tx_512_to_1023, TX_512_TO_1023_PKTS);
443 MAC_STAT(tx_1024_to_15xx, TX_1024_TO_15XX_PKTS);
444 MAC_STAT(tx_15xx_to_jumbo, TX_15XX_TO_JUMBO_PKTS);
445 MAC_STAT(tx_gtjumbo, TX_GTJUMBO_PKTS);
446 mac_stats->tx_collision = 0;
447 MAC_STAT(tx_single_collision, TX_SINGLE_COLLISION_PKTS);
448 MAC_STAT(tx_multiple_collision, TX_MULTIPLE_COLLISION_PKTS);
449 MAC_STAT(tx_excessive_collision, TX_EXCESSIVE_COLLISION_PKTS);
450 MAC_STAT(tx_deferred, TX_DEFERRED_PKTS);
451 MAC_STAT(tx_late_collision, TX_LATE_COLLISION_PKTS);
452 mac_stats->tx_collision = (mac_stats->tx_single_collision +
453 mac_stats->tx_multiple_collision +
454 mac_stats->tx_excessive_collision +
455 mac_stats->tx_late_collision);
456 MAC_STAT(tx_excessive_deferred, TX_EXCESSIVE_DEFERRED_PKTS);
457 MAC_STAT(tx_non_tcpudp, TX_NON_TCPUDP_PKTS);
458 MAC_STAT(tx_mac_src_error, TX_MAC_SRC_ERR_PKTS);
459 MAC_STAT(tx_ip_src_error, TX_IP_SRC_ERR_PKTS);
460 MAC_STAT(rx_bytes, RX_BYTES);
461 MAC_STAT(rx_bad_bytes, RX_BAD_BYTES);
462 mac_stats->rx_good_bytes = (mac_stats->rx_bytes -
463 mac_stats->rx_bad_bytes);
464 MAC_STAT(rx_packets, RX_PKTS);
465 MAC_STAT(rx_good, RX_GOOD_PKTS);
466 MAC_STAT(rx_bad, RX_BAD_FCS_PKTS);
467 MAC_STAT(rx_pause, RX_PAUSE_PKTS);
468 MAC_STAT(rx_control, RX_CONTROL_PKTS);
469 MAC_STAT(rx_unicast, RX_UNICAST_PKTS);
470 MAC_STAT(rx_multicast, RX_MULTICAST_PKTS);
471 MAC_STAT(rx_broadcast, RX_BROADCAST_PKTS);
472 MAC_STAT(rx_lt64, RX_UNDERSIZE_PKTS);
473 MAC_STAT(rx_64, RX_64_PKTS);
474 MAC_STAT(rx_65_to_127, RX_65_TO_127_PKTS);
475 MAC_STAT(rx_128_to_255, RX_128_TO_255_PKTS);
476 MAC_STAT(rx_256_to_511, RX_256_TO_511_PKTS);
477 MAC_STAT(rx_512_to_1023, RX_512_TO_1023_PKTS);
478 MAC_STAT(rx_1024_to_15xx, RX_1024_TO_15XX_PKTS);
479 MAC_STAT(rx_15xx_to_jumbo, RX_15XX_TO_JUMBO_PKTS);
480 MAC_STAT(rx_gtjumbo, RX_GTJUMBO_PKTS);
481 mac_stats->rx_bad_lt64 = 0;
482 mac_stats->rx_bad_64_to_15xx = 0;
483 mac_stats->rx_bad_15xx_to_jumbo = 0;
484 MAC_STAT(rx_bad_gtjumbo, RX_JABBER_PKTS);
485 MAC_STAT(rx_overflow, RX_OVERFLOW_PKTS);
486 mac_stats->rx_missed = 0;
487 MAC_STAT(rx_false_carrier, RX_FALSE_CARRIER_PKTS);
488 MAC_STAT(rx_symbol_error, RX_SYMBOL_ERROR_PKTS);
489 MAC_STAT(rx_align_error, RX_ALIGN_ERROR_PKTS);
490 MAC_STAT(rx_length_error, RX_LENGTH_ERROR_PKTS);
491 MAC_STAT(rx_internal_error, RX_INTERNAL_ERROR_PKTS);
492 mac_stats->rx_good_lt64 = 0;
493
494 efx->n_rx_nodesc_drop_cnt =
495 le64_to_cpu(dma_stats[MC_CMD_MAC_RX_NODESC_DROPS]);
496
497 #undef MAC_STAT
498
499 rmb();
500 generation_start = dma_stats[MC_CMD_MAC_GENERATION_START];
501 if (generation_end != generation_start)
502 return -EAGAIN;
503
504 return 0;
505 }
506
siena_update_nic_stats(struct efx_nic * efx)507 static void siena_update_nic_stats(struct efx_nic *efx)
508 {
509 int retry;
510
511 /* If we're unlucky enough to read statistics wduring the DMA, wait
512 * up to 10ms for it to finish (typically takes <500us) */
513 for (retry = 0; retry < 100; ++retry) {
514 if (siena_try_update_nic_stats(efx) == 0)
515 return;
516 udelay(100);
517 }
518
519 /* Use the old values instead */
520 }
521
siena_start_nic_stats(struct efx_nic * efx)522 static void siena_start_nic_stats(struct efx_nic *efx)
523 {
524 __le64 *dma_stats = efx->stats_buffer.addr;
525
526 dma_stats[MC_CMD_MAC_GENERATION_END] = STATS_GENERATION_INVALID;
527
528 efx_mcdi_mac_stats(efx, efx->stats_buffer.dma_addr,
529 MC_CMD_MAC_NSTATS * sizeof(u64), 1, 0);
530 }
531
siena_stop_nic_stats(struct efx_nic * efx)532 static void siena_stop_nic_stats(struct efx_nic *efx)
533 {
534 efx_mcdi_mac_stats(efx, efx->stats_buffer.dma_addr, 0, 0, 0);
535 }
536
537 /**************************************************************************
538 *
539 * Wake on LAN
540 *
541 **************************************************************************
542 */
543
siena_get_wol(struct efx_nic * efx,struct ethtool_wolinfo * wol)544 static void siena_get_wol(struct efx_nic *efx, struct ethtool_wolinfo *wol)
545 {
546 struct siena_nic_data *nic_data = efx->nic_data;
547
548 wol->supported = WAKE_MAGIC;
549 if (nic_data->wol_filter_id != -1)
550 wol->wolopts = WAKE_MAGIC;
551 else
552 wol->wolopts = 0;
553 memset(&wol->sopass, 0, sizeof(wol->sopass));
554 }
555
556
siena_set_wol(struct efx_nic * efx,u32 type)557 static int siena_set_wol(struct efx_nic *efx, u32 type)
558 {
559 struct siena_nic_data *nic_data = efx->nic_data;
560 int rc;
561
562 if (type & ~WAKE_MAGIC)
563 return -EINVAL;
564
565 if (type & WAKE_MAGIC) {
566 if (nic_data->wol_filter_id != -1)
567 efx_mcdi_wol_filter_remove(efx,
568 nic_data->wol_filter_id);
569 rc = efx_mcdi_wol_filter_set_magic(efx, efx->net_dev->dev_addr,
570 &nic_data->wol_filter_id);
571 if (rc)
572 goto fail;
573
574 pci_wake_from_d3(efx->pci_dev, true);
575 } else {
576 rc = efx_mcdi_wol_filter_reset(efx);
577 nic_data->wol_filter_id = -1;
578 pci_wake_from_d3(efx->pci_dev, false);
579 if (rc)
580 goto fail;
581 }
582
583 return 0;
584 fail:
585 netif_err(efx, hw, efx->net_dev, "%s failed: type=%d rc=%d\n",
586 __func__, type, rc);
587 return rc;
588 }
589
590
siena_init_wol(struct efx_nic * efx)591 static void siena_init_wol(struct efx_nic *efx)
592 {
593 struct siena_nic_data *nic_data = efx->nic_data;
594 int rc;
595
596 rc = efx_mcdi_wol_filter_get_magic(efx, &nic_data->wol_filter_id);
597
598 if (rc != 0) {
599 /* If it failed, attempt to get into a synchronised
600 * state with MC by resetting any set WoL filters */
601 efx_mcdi_wol_filter_reset(efx);
602 nic_data->wol_filter_id = -1;
603 } else if (nic_data->wol_filter_id != -1) {
604 pci_wake_from_d3(efx->pci_dev, true);
605 }
606 }
607
608
609 /**************************************************************************
610 *
611 * Revision-dependent attributes used by efx.c and nic.c
612 *
613 **************************************************************************
614 */
615
616 const struct efx_nic_type siena_a0_nic_type = {
617 .probe = siena_probe_nic,
618 .remove = siena_remove_nic,
619 .init = siena_init_nic,
620 .fini = efx_port_dummy_op_void,
621 .monitor = NULL,
622 .map_reset_reason = siena_map_reset_reason,
623 .map_reset_flags = siena_map_reset_flags,
624 .reset = siena_reset_hw,
625 .probe_port = siena_probe_port,
626 .remove_port = siena_remove_port,
627 .prepare_flush = efx_port_dummy_op_void,
628 .update_stats = siena_update_nic_stats,
629 .start_stats = siena_start_nic_stats,
630 .stop_stats = siena_stop_nic_stats,
631 .set_id_led = efx_mcdi_set_id_led,
632 .push_irq_moderation = siena_push_irq_moderation,
633 .push_multicast_hash = siena_push_multicast_hash,
634 .reconfigure_port = efx_mcdi_phy_reconfigure,
635 .get_wol = siena_get_wol,
636 .set_wol = siena_set_wol,
637 .resume_wol = siena_init_wol,
638 .test_registers = siena_test_registers,
639 .test_nvram = efx_mcdi_nvram_test_all,
640 .default_mac_ops = &efx_mcdi_mac_operations,
641
642 .revision = EFX_REV_SIENA_A0,
643 .mem_map_size = (FR_CZ_MC_TREG_SMEM +
644 FR_CZ_MC_TREG_SMEM_STEP * FR_CZ_MC_TREG_SMEM_ROWS),
645 .txd_ptr_tbl_base = FR_BZ_TX_DESC_PTR_TBL,
646 .rxd_ptr_tbl_base = FR_BZ_RX_DESC_PTR_TBL,
647 .buf_tbl_base = FR_BZ_BUF_FULL_TBL,
648 .evq_ptr_tbl_base = FR_BZ_EVQ_PTR_TBL,
649 .evq_rptr_tbl_base = FR_BZ_EVQ_RPTR,
650 .max_dma_mask = DMA_BIT_MASK(FSF_AZ_TX_KER_BUF_ADDR_WIDTH),
651 .rx_buffer_hash_size = 0x10,
652 .rx_buffer_padding = 0,
653 .max_interrupt_mode = EFX_INT_MODE_MSIX,
654 .phys_addr_channels = 32, /* Hardware limit is 64, but the legacy
655 * interrupt handler only supports 32
656 * channels */
657 .tx_dc_base = 0x88000,
658 .rx_dc_base = 0x68000,
659 .offload_features = (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
660 NETIF_F_RXHASH | NETIF_F_NTUPLE),
661 };
662