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f4150724 BH |
1 | /**************************************************************************** |
2 | * Driver for Solarflare Solarstorm network controllers and boards | |
3 | * Copyright 2005-2006 Fen Systems Ltd. | |
0a6f40c6 | 4 | * Copyright 2006-2010 Solarflare Communications Inc. |
f4150724 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 | ||
8880f4ec | 11 | #include <linux/bitops.h> |
f4150724 BH |
12 | #include <linux/module.h> |
13 | #include <linux/mtd/mtd.h> | |
14 | #include <linux/delay.h> | |
5a0e3ad6 | 15 | #include <linux/slab.h> |
76884835 | 16 | #include <linux/rtnetlink.h> |
f4150724 | 17 | |
f4150724 BH |
18 | #include "net_driver.h" |
19 | #include "spi.h" | |
ff2ef902 | 20 | #include "efx.h" |
744093c9 | 21 | #include "nic.h" |
8880f4ec BH |
22 | #include "mcdi.h" |
23 | #include "mcdi_pcol.h" | |
f4150724 BH |
24 | |
25 | #define EFX_SPI_VERIFY_BUF_LEN 16 | |
26 | ||
76884835 | 27 | struct efx_mtd_partition { |
f4150724 | 28 | struct mtd_info mtd; |
8880f4ec BH |
29 | union { |
30 | struct { | |
31 | bool updating; | |
32 | u8 nvram_type; | |
33 | u16 fw_subtype; | |
34 | } mcdi; | |
35 | size_t offset; | |
36 | }; | |
76884835 | 37 | const char *type_name; |
f4150724 BH |
38 | char name[IFNAMSIZ + 20]; |
39 | }; | |
40 | ||
76884835 BH |
41 | struct efx_mtd_ops { |
42 | int (*read)(struct mtd_info *mtd, loff_t start, size_t len, | |
43 | size_t *retlen, u8 *buffer); | |
44 | int (*erase)(struct mtd_info *mtd, loff_t start, size_t len); | |
45 | int (*write)(struct mtd_info *mtd, loff_t start, size_t len, | |
46 | size_t *retlen, const u8 *buffer); | |
47 | int (*sync)(struct mtd_info *mtd); | |
48 | }; | |
49 | ||
50 | struct efx_mtd { | |
51 | struct list_head node; | |
52 | struct efx_nic *efx; | |
53 | const struct efx_spi_device *spi; | |
54 | const char *name; | |
55 | const struct efx_mtd_ops *ops; | |
56 | size_t n_parts; | |
57 | struct efx_mtd_partition part[0]; | |
58 | }; | |
59 | ||
60 | #define efx_for_each_partition(part, efx_mtd) \ | |
61 | for ((part) = &(efx_mtd)->part[0]; \ | |
62 | (part) != &(efx_mtd)->part[(efx_mtd)->n_parts]; \ | |
63 | (part)++) | |
64 | ||
65 | #define to_efx_mtd_partition(mtd) \ | |
66 | container_of(mtd, struct efx_mtd_partition, mtd) | |
67 | ||
68 | static int falcon_mtd_probe(struct efx_nic *efx); | |
8880f4ec | 69 | static int siena_mtd_probe(struct efx_nic *efx); |
76884835 | 70 | |
f4150724 BH |
71 | /* SPI utilities */ |
72 | ||
0c605a20 BH |
73 | static int |
74 | efx_spi_slow_wait(struct efx_mtd_partition *part, bool uninterruptible) | |
f4150724 | 75 | { |
0c605a20 | 76 | struct efx_mtd *efx_mtd = part->mtd.priv; |
f4150724 | 77 | const struct efx_spi_device *spi = efx_mtd->spi; |
76884835 | 78 | struct efx_nic *efx = efx_mtd->efx; |
f4150724 BH |
79 | u8 status; |
80 | int rc, i; | |
81 | ||
82 | /* Wait up to 4s for flash/EEPROM to finish a slow operation. */ | |
83 | for (i = 0; i < 40; i++) { | |
84 | __set_current_state(uninterruptible ? | |
85 | TASK_UNINTERRUPTIBLE : TASK_INTERRUPTIBLE); | |
86 | schedule_timeout(HZ / 10); | |
76884835 | 87 | rc = falcon_spi_cmd(efx, spi, SPI_RDSR, -1, NULL, |
f4150724 BH |
88 | &status, sizeof(status)); |
89 | if (rc) | |
90 | return rc; | |
91 | if (!(status & SPI_STATUS_NRDY)) | |
92 | return 0; | |
93 | if (signal_pending(current)) | |
94 | return -EINTR; | |
95 | } | |
0c605a20 | 96 | pr_err("%s: timed out waiting for %s\n", part->name, efx_mtd->name); |
f4150724 BH |
97 | return -ETIMEDOUT; |
98 | } | |
99 | ||
76884835 BH |
100 | static int |
101 | efx_spi_unlock(struct efx_nic *efx, const struct efx_spi_device *spi) | |
f4150724 BH |
102 | { |
103 | const u8 unlock_mask = (SPI_STATUS_BP2 | SPI_STATUS_BP1 | | |
104 | SPI_STATUS_BP0); | |
105 | u8 status; | |
106 | int rc; | |
107 | ||
76884835 BH |
108 | rc = falcon_spi_cmd(efx, spi, SPI_RDSR, -1, NULL, |
109 | &status, sizeof(status)); | |
f4150724 BH |
110 | if (rc) |
111 | return rc; | |
112 | ||
113 | if (!(status & unlock_mask)) | |
114 | return 0; /* already unlocked */ | |
115 | ||
76884835 | 116 | rc = falcon_spi_cmd(efx, spi, SPI_WREN, -1, NULL, NULL, 0); |
f4150724 BH |
117 | if (rc) |
118 | return rc; | |
76884835 | 119 | rc = falcon_spi_cmd(efx, spi, SPI_SST_EWSR, -1, NULL, NULL, 0); |
f4150724 BH |
120 | if (rc) |
121 | return rc; | |
122 | ||
123 | status &= ~unlock_mask; | |
76884835 BH |
124 | rc = falcon_spi_cmd(efx, spi, SPI_WRSR, -1, &status, |
125 | NULL, sizeof(status)); | |
f4150724 BH |
126 | if (rc) |
127 | return rc; | |
76884835 | 128 | rc = falcon_spi_wait_write(efx, spi); |
f4150724 BH |
129 | if (rc) |
130 | return rc; | |
131 | ||
132 | return 0; | |
133 | } | |
134 | ||
0c605a20 BH |
135 | static int |
136 | efx_spi_erase(struct efx_mtd_partition *part, loff_t start, size_t len) | |
f4150724 | 137 | { |
0c605a20 | 138 | struct efx_mtd *efx_mtd = part->mtd.priv; |
f4150724 | 139 | const struct efx_spi_device *spi = efx_mtd->spi; |
76884835 | 140 | struct efx_nic *efx = efx_mtd->efx; |
f4150724 BH |
141 | unsigned pos, block_len; |
142 | u8 empty[EFX_SPI_VERIFY_BUF_LEN]; | |
143 | u8 buffer[EFX_SPI_VERIFY_BUF_LEN]; | |
144 | int rc; | |
145 | ||
146 | if (len != spi->erase_size) | |
147 | return -EINVAL; | |
148 | ||
149 | if (spi->erase_command == 0) | |
150 | return -EOPNOTSUPP; | |
151 | ||
76884835 | 152 | rc = efx_spi_unlock(efx, spi); |
f4150724 BH |
153 | if (rc) |
154 | return rc; | |
76884835 | 155 | rc = falcon_spi_cmd(efx, spi, SPI_WREN, -1, NULL, NULL, 0); |
f4150724 BH |
156 | if (rc) |
157 | return rc; | |
76884835 BH |
158 | rc = falcon_spi_cmd(efx, spi, spi->erase_command, start, NULL, |
159 | NULL, 0); | |
f4150724 BH |
160 | if (rc) |
161 | return rc; | |
0c605a20 | 162 | rc = efx_spi_slow_wait(part, false); |
f4150724 BH |
163 | |
164 | /* Verify the entire region has been wiped */ | |
165 | memset(empty, 0xff, sizeof(empty)); | |
166 | for (pos = 0; pos < len; pos += block_len) { | |
167 | block_len = min(len - pos, sizeof(buffer)); | |
76884835 BH |
168 | rc = falcon_spi_read(efx, spi, start + pos, block_len, |
169 | NULL, buffer); | |
f4150724 BH |
170 | if (rc) |
171 | return rc; | |
172 | if (memcmp(empty, buffer, block_len)) | |
173 | return -EIO; | |
174 | ||
175 | /* Avoid locking up the system */ | |
176 | cond_resched(); | |
177 | if (signal_pending(current)) | |
178 | return -EINTR; | |
179 | } | |
180 | ||
181 | return rc; | |
182 | } | |
183 | ||
184 | /* MTD interface */ | |
185 | ||
76884835 BH |
186 | static int efx_mtd_erase(struct mtd_info *mtd, struct erase_info *erase) |
187 | { | |
188 | struct efx_mtd *efx_mtd = mtd->priv; | |
189 | int rc; | |
190 | ||
191 | rc = efx_mtd->ops->erase(mtd, erase->addr, erase->len); | |
192 | if (rc == 0) { | |
193 | erase->state = MTD_ERASE_DONE; | |
194 | } else { | |
195 | erase->state = MTD_ERASE_FAILED; | |
88dfda5f | 196 | erase->fail_addr = MTD_FAIL_ADDR_UNKNOWN; |
76884835 BH |
197 | } |
198 | mtd_erase_callback(erase); | |
199 | return rc; | |
200 | } | |
201 | ||
202 | static void efx_mtd_sync(struct mtd_info *mtd) | |
203 | { | |
0c605a20 | 204 | struct efx_mtd_partition *part = to_efx_mtd_partition(mtd); |
76884835 | 205 | struct efx_mtd *efx_mtd = mtd->priv; |
76884835 BH |
206 | int rc; |
207 | ||
208 | rc = efx_mtd->ops->sync(mtd); | |
209 | if (rc) | |
0c605a20 BH |
210 | pr_err("%s: %s sync failed (%d)\n", |
211 | part->name, efx_mtd->name, rc); | |
76884835 BH |
212 | } |
213 | ||
214 | static void efx_mtd_remove_partition(struct efx_mtd_partition *part) | |
215 | { | |
216 | int rc; | |
217 | ||
218 | for (;;) { | |
ee0e87b1 | 219 | rc = mtd_device_unregister(&part->mtd); |
76884835 BH |
220 | if (rc != -EBUSY) |
221 | break; | |
222 | ssleep(1); | |
223 | } | |
224 | WARN_ON(rc); | |
225 | } | |
226 | ||
227 | static void efx_mtd_remove_device(struct efx_mtd *efx_mtd) | |
228 | { | |
229 | struct efx_mtd_partition *part; | |
230 | ||
231 | efx_for_each_partition(part, efx_mtd) | |
232 | efx_mtd_remove_partition(part); | |
233 | list_del(&efx_mtd->node); | |
234 | kfree(efx_mtd); | |
235 | } | |
236 | ||
237 | static void efx_mtd_rename_device(struct efx_mtd *efx_mtd) | |
238 | { | |
239 | struct efx_mtd_partition *part; | |
240 | ||
241 | efx_for_each_partition(part, efx_mtd) | |
8880f4ec BH |
242 | if (efx_nic_rev(efx_mtd->efx) >= EFX_REV_SIENA_A0) |
243 | snprintf(part->name, sizeof(part->name), | |
244 | "%s %s:%02x", efx_mtd->efx->name, | |
245 | part->type_name, part->mcdi.fw_subtype); | |
246 | else | |
247 | snprintf(part->name, sizeof(part->name), | |
248 | "%s %s", efx_mtd->efx->name, | |
249 | part->type_name); | |
76884835 BH |
250 | } |
251 | ||
252 | static int efx_mtd_probe_device(struct efx_nic *efx, struct efx_mtd *efx_mtd) | |
253 | { | |
254 | struct efx_mtd_partition *part; | |
255 | ||
256 | efx_mtd->efx = efx; | |
257 | ||
258 | efx_mtd_rename_device(efx_mtd); | |
259 | ||
260 | efx_for_each_partition(part, efx_mtd) { | |
261 | part->mtd.writesize = 1; | |
262 | ||
263 | part->mtd.owner = THIS_MODULE; | |
264 | part->mtd.priv = efx_mtd; | |
265 | part->mtd.name = part->name; | |
3c3c10bb AB |
266 | part->mtd._erase = efx_mtd_erase; |
267 | part->mtd._read = efx_mtd->ops->read; | |
268 | part->mtd._write = efx_mtd->ops->write; | |
269 | part->mtd._sync = efx_mtd_sync; | |
76884835 | 270 | |
ee0e87b1 | 271 | if (mtd_device_register(&part->mtd, NULL, 0)) |
76884835 BH |
272 | goto fail; |
273 | } | |
274 | ||
275 | list_add(&efx_mtd->node, &efx->mtd_list); | |
276 | return 0; | |
277 | ||
278 | fail: | |
279 | while (part != &efx_mtd->part[0]) { | |
280 | --part; | |
281 | efx_mtd_remove_partition(part); | |
282 | } | |
7c43161c | 283 | /* Failure is unlikely here, but probably means we're out of memory */ |
76884835 BH |
284 | return -ENOMEM; |
285 | } | |
286 | ||
287 | void efx_mtd_remove(struct efx_nic *efx) | |
f4150724 | 288 | { |
76884835 BH |
289 | struct efx_mtd *efx_mtd, *next; |
290 | ||
291 | WARN_ON(efx_dev_registered(efx)); | |
292 | ||
293 | list_for_each_entry_safe(efx_mtd, next, &efx->mtd_list, node) | |
294 | efx_mtd_remove_device(efx_mtd); | |
295 | } | |
296 | ||
297 | void efx_mtd_rename(struct efx_nic *efx) | |
298 | { | |
299 | struct efx_mtd *efx_mtd; | |
300 | ||
301 | ASSERT_RTNL(); | |
302 | ||
303 | list_for_each_entry(efx_mtd, &efx->mtd_list, node) | |
304 | efx_mtd_rename_device(efx_mtd); | |
305 | } | |
306 | ||
307 | int efx_mtd_probe(struct efx_nic *efx) | |
308 | { | |
8880f4ec BH |
309 | if (efx_nic_rev(efx) >= EFX_REV_SIENA_A0) |
310 | return siena_mtd_probe(efx); | |
311 | else | |
312 | return falcon_mtd_probe(efx); | |
76884835 BH |
313 | } |
314 | ||
315 | /* Implementation of MTD operations for Falcon */ | |
316 | ||
317 | static int falcon_mtd_read(struct mtd_info *mtd, loff_t start, | |
318 | size_t len, size_t *retlen, u8 *buffer) | |
319 | { | |
320 | struct efx_mtd_partition *part = to_efx_mtd_partition(mtd); | |
f4150724 BH |
321 | struct efx_mtd *efx_mtd = mtd->priv; |
322 | const struct efx_spi_device *spi = efx_mtd->spi; | |
76884835 | 323 | struct efx_nic *efx = efx_mtd->efx; |
4de92180 | 324 | struct falcon_nic_data *nic_data = efx->nic_data; |
f4150724 BH |
325 | int rc; |
326 | ||
4de92180 | 327 | rc = mutex_lock_interruptible(&nic_data->spi_lock); |
f4150724 BH |
328 | if (rc) |
329 | return rc; | |
76884835 BH |
330 | rc = falcon_spi_read(efx, spi, part->offset + start, len, |
331 | retlen, buffer); | |
4de92180 | 332 | mutex_unlock(&nic_data->spi_lock); |
f4150724 BH |
333 | return rc; |
334 | } | |
335 | ||
76884835 | 336 | static int falcon_mtd_erase(struct mtd_info *mtd, loff_t start, size_t len) |
f4150724 | 337 | { |
76884835 | 338 | struct efx_mtd_partition *part = to_efx_mtd_partition(mtd); |
f4150724 | 339 | struct efx_mtd *efx_mtd = mtd->priv; |
76884835 | 340 | struct efx_nic *efx = efx_mtd->efx; |
4de92180 | 341 | struct falcon_nic_data *nic_data = efx->nic_data; |
f4150724 BH |
342 | int rc; |
343 | ||
4de92180 | 344 | rc = mutex_lock_interruptible(&nic_data->spi_lock); |
f4150724 BH |
345 | if (rc) |
346 | return rc; | |
0c605a20 | 347 | rc = efx_spi_erase(part, part->offset + start, len); |
4de92180 | 348 | mutex_unlock(&nic_data->spi_lock); |
f4150724 BH |
349 | return rc; |
350 | } | |
351 | ||
76884835 BH |
352 | static int falcon_mtd_write(struct mtd_info *mtd, loff_t start, |
353 | size_t len, size_t *retlen, const u8 *buffer) | |
f4150724 | 354 | { |
76884835 | 355 | struct efx_mtd_partition *part = to_efx_mtd_partition(mtd); |
f4150724 BH |
356 | struct efx_mtd *efx_mtd = mtd->priv; |
357 | const struct efx_spi_device *spi = efx_mtd->spi; | |
76884835 | 358 | struct efx_nic *efx = efx_mtd->efx; |
4de92180 | 359 | struct falcon_nic_data *nic_data = efx->nic_data; |
f4150724 BH |
360 | int rc; |
361 | ||
4de92180 | 362 | rc = mutex_lock_interruptible(&nic_data->spi_lock); |
f4150724 BH |
363 | if (rc) |
364 | return rc; | |
76884835 BH |
365 | rc = falcon_spi_write(efx, spi, part->offset + start, len, |
366 | retlen, buffer); | |
4de92180 | 367 | mutex_unlock(&nic_data->spi_lock); |
f4150724 BH |
368 | return rc; |
369 | } | |
370 | ||
76884835 | 371 | static int falcon_mtd_sync(struct mtd_info *mtd) |
f4150724 | 372 | { |
0c605a20 | 373 | struct efx_mtd_partition *part = to_efx_mtd_partition(mtd); |
f4150724 | 374 | struct efx_mtd *efx_mtd = mtd->priv; |
76884835 | 375 | struct efx_nic *efx = efx_mtd->efx; |
4de92180 | 376 | struct falcon_nic_data *nic_data = efx->nic_data; |
f4150724 BH |
377 | int rc; |
378 | ||
4de92180 | 379 | mutex_lock(&nic_data->spi_lock); |
0c605a20 | 380 | rc = efx_spi_slow_wait(part, true); |
4de92180 | 381 | mutex_unlock(&nic_data->spi_lock); |
76884835 | 382 | return rc; |
f4150724 BH |
383 | } |
384 | ||
18e83e4c | 385 | static const struct efx_mtd_ops falcon_mtd_ops = { |
76884835 BH |
386 | .read = falcon_mtd_read, |
387 | .erase = falcon_mtd_erase, | |
388 | .write = falcon_mtd_write, | |
389 | .sync = falcon_mtd_sync, | |
390 | }; | |
f4150724 | 391 | |
76884835 | 392 | static int falcon_mtd_probe(struct efx_nic *efx) |
f4150724 | 393 | { |
4de92180 | 394 | struct falcon_nic_data *nic_data = efx->nic_data; |
6a8872c5 | 395 | struct efx_spi_device *spi; |
f4150724 | 396 | struct efx_mtd *efx_mtd; |
6a8872c5 | 397 | int rc = -ENODEV; |
76884835 BH |
398 | |
399 | ASSERT_RTNL(); | |
f4150724 | 400 | |
4de92180 BH |
401 | spi = &nic_data->spi_flash; |
402 | if (efx_spi_present(spi) && spi->size > FALCON_FLASH_BOOTCODE_START) { | |
6a8872c5 BH |
403 | efx_mtd = kzalloc(sizeof(*efx_mtd) + sizeof(efx_mtd->part[0]), |
404 | GFP_KERNEL); | |
405 | if (!efx_mtd) | |
406 | return -ENOMEM; | |
407 | ||
408 | efx_mtd->spi = spi; | |
409 | efx_mtd->name = "flash"; | |
410 | efx_mtd->ops = &falcon_mtd_ops; | |
411 | ||
412 | efx_mtd->n_parts = 1; | |
413 | efx_mtd->part[0].mtd.type = MTD_NORFLASH; | |
414 | efx_mtd->part[0].mtd.flags = MTD_CAP_NORFLASH; | |
415 | efx_mtd->part[0].mtd.size = spi->size - FALCON_FLASH_BOOTCODE_START; | |
416 | efx_mtd->part[0].mtd.erasesize = spi->erase_size; | |
417 | efx_mtd->part[0].offset = FALCON_FLASH_BOOTCODE_START; | |
418 | efx_mtd->part[0].type_name = "sfc_flash_bootrom"; | |
419 | ||
420 | rc = efx_mtd_probe_device(efx, efx_mtd); | |
421 | if (rc) { | |
422 | kfree(efx_mtd); | |
423 | return rc; | |
424 | } | |
425 | } | |
76884835 | 426 | |
4de92180 BH |
427 | spi = &nic_data->spi_eeprom; |
428 | if (efx_spi_present(spi) && spi->size > EFX_EEPROM_BOOTCONFIG_START) { | |
6a8872c5 BH |
429 | efx_mtd = kzalloc(sizeof(*efx_mtd) + sizeof(efx_mtd->part[0]), |
430 | GFP_KERNEL); | |
431 | if (!efx_mtd) | |
432 | return -ENOMEM; | |
433 | ||
434 | efx_mtd->spi = spi; | |
435 | efx_mtd->name = "EEPROM"; | |
436 | efx_mtd->ops = &falcon_mtd_ops; | |
437 | ||
438 | efx_mtd->n_parts = 1; | |
439 | efx_mtd->part[0].mtd.type = MTD_RAM; | |
440 | efx_mtd->part[0].mtd.flags = MTD_CAP_RAM; | |
441 | efx_mtd->part[0].mtd.size = | |
442 | min(spi->size, EFX_EEPROM_BOOTCONFIG_END) - | |
443 | EFX_EEPROM_BOOTCONFIG_START; | |
444 | efx_mtd->part[0].mtd.erasesize = spi->erase_size; | |
445 | efx_mtd->part[0].offset = EFX_EEPROM_BOOTCONFIG_START; | |
446 | efx_mtd->part[0].type_name = "sfc_bootconfig"; | |
447 | ||
448 | rc = efx_mtd_probe_device(efx, efx_mtd); | |
449 | if (rc) { | |
450 | kfree(efx_mtd); | |
451 | return rc; | |
452 | } | |
453 | } | |
76884835 | 454 | |
76884835 | 455 | return rc; |
f4150724 | 456 | } |
8880f4ec BH |
457 | |
458 | /* Implementation of MTD operations for Siena */ | |
459 | ||
460 | static int siena_mtd_read(struct mtd_info *mtd, loff_t start, | |
461 | size_t len, size_t *retlen, u8 *buffer) | |
462 | { | |
463 | struct efx_mtd_partition *part = to_efx_mtd_partition(mtd); | |
464 | struct efx_mtd *efx_mtd = mtd->priv; | |
465 | struct efx_nic *efx = efx_mtd->efx; | |
466 | loff_t offset = start; | |
467 | loff_t end = min_t(loff_t, start + len, mtd->size); | |
468 | size_t chunk; | |
469 | int rc = 0; | |
470 | ||
471 | while (offset < end) { | |
5a27e86b | 472 | chunk = min_t(size_t, end - offset, EFX_MCDI_NVRAM_LEN_MAX); |
8880f4ec BH |
473 | rc = efx_mcdi_nvram_read(efx, part->mcdi.nvram_type, offset, |
474 | buffer, chunk); | |
475 | if (rc) | |
476 | goto out; | |
477 | offset += chunk; | |
478 | buffer += chunk; | |
479 | } | |
480 | out: | |
481 | *retlen = offset - start; | |
482 | return rc; | |
483 | } | |
484 | ||
485 | static int siena_mtd_erase(struct mtd_info *mtd, loff_t start, size_t len) | |
486 | { | |
487 | struct efx_mtd_partition *part = to_efx_mtd_partition(mtd); | |
488 | struct efx_mtd *efx_mtd = mtd->priv; | |
489 | struct efx_nic *efx = efx_mtd->efx; | |
490 | loff_t offset = start & ~((loff_t)(mtd->erasesize - 1)); | |
491 | loff_t end = min_t(loff_t, start + len, mtd->size); | |
492 | size_t chunk = part->mtd.erasesize; | |
493 | int rc = 0; | |
494 | ||
495 | if (!part->mcdi.updating) { | |
496 | rc = efx_mcdi_nvram_update_start(efx, part->mcdi.nvram_type); | |
497 | if (rc) | |
498 | goto out; | |
3db1cd5c | 499 | part->mcdi.updating = true; |
8880f4ec BH |
500 | } |
501 | ||
502 | /* The MCDI interface can in fact do multiple erase blocks at once; | |
503 | * but erasing may be slow, so we make multiple calls here to avoid | |
504 | * tripping the MCDI RPC timeout. */ | |
505 | while (offset < end) { | |
506 | rc = efx_mcdi_nvram_erase(efx, part->mcdi.nvram_type, offset, | |
507 | chunk); | |
508 | if (rc) | |
509 | goto out; | |
510 | offset += chunk; | |
511 | } | |
512 | out: | |
513 | return rc; | |
514 | } | |
515 | ||
516 | static int siena_mtd_write(struct mtd_info *mtd, loff_t start, | |
517 | size_t len, size_t *retlen, const u8 *buffer) | |
518 | { | |
519 | struct efx_mtd_partition *part = to_efx_mtd_partition(mtd); | |
520 | struct efx_mtd *efx_mtd = mtd->priv; | |
521 | struct efx_nic *efx = efx_mtd->efx; | |
522 | loff_t offset = start; | |
523 | loff_t end = min_t(loff_t, start + len, mtd->size); | |
524 | size_t chunk; | |
525 | int rc = 0; | |
526 | ||
527 | if (!part->mcdi.updating) { | |
528 | rc = efx_mcdi_nvram_update_start(efx, part->mcdi.nvram_type); | |
529 | if (rc) | |
530 | goto out; | |
3db1cd5c | 531 | part->mcdi.updating = true; |
8880f4ec BH |
532 | } |
533 | ||
534 | while (offset < end) { | |
5a27e86b | 535 | chunk = min_t(size_t, end - offset, EFX_MCDI_NVRAM_LEN_MAX); |
8880f4ec BH |
536 | rc = efx_mcdi_nvram_write(efx, part->mcdi.nvram_type, offset, |
537 | buffer, chunk); | |
538 | if (rc) | |
539 | goto out; | |
540 | offset += chunk; | |
541 | buffer += chunk; | |
542 | } | |
543 | out: | |
544 | *retlen = offset - start; | |
545 | return rc; | |
546 | } | |
547 | ||
548 | static int siena_mtd_sync(struct mtd_info *mtd) | |
549 | { | |
550 | struct efx_mtd_partition *part = to_efx_mtd_partition(mtd); | |
551 | struct efx_mtd *efx_mtd = mtd->priv; | |
552 | struct efx_nic *efx = efx_mtd->efx; | |
553 | int rc = 0; | |
554 | ||
555 | if (part->mcdi.updating) { | |
3db1cd5c | 556 | part->mcdi.updating = false; |
8880f4ec BH |
557 | rc = efx_mcdi_nvram_update_finish(efx, part->mcdi.nvram_type); |
558 | } | |
559 | ||
560 | return rc; | |
561 | } | |
562 | ||
18e83e4c | 563 | static const struct efx_mtd_ops siena_mtd_ops = { |
8880f4ec BH |
564 | .read = siena_mtd_read, |
565 | .erase = siena_mtd_erase, | |
566 | .write = siena_mtd_write, | |
567 | .sync = siena_mtd_sync, | |
568 | }; | |
569 | ||
570 | struct siena_nvram_type_info { | |
571 | int port; | |
572 | const char *name; | |
573 | }; | |
574 | ||
18e83e4c | 575 | static const struct siena_nvram_type_info siena_nvram_types[] = { |
8880f4ec BH |
576 | [MC_CMD_NVRAM_TYPE_DISABLED_CALLISTO] = { 0, "sfc_dummy_phy" }, |
577 | [MC_CMD_NVRAM_TYPE_MC_FW] = { 0, "sfc_mcfw" }, | |
578 | [MC_CMD_NVRAM_TYPE_MC_FW_BACKUP] = { 0, "sfc_mcfw_backup" }, | |
579 | [MC_CMD_NVRAM_TYPE_STATIC_CFG_PORT0] = { 0, "sfc_static_cfg" }, | |
580 | [MC_CMD_NVRAM_TYPE_STATIC_CFG_PORT1] = { 1, "sfc_static_cfg" }, | |
581 | [MC_CMD_NVRAM_TYPE_DYNAMIC_CFG_PORT0] = { 0, "sfc_dynamic_cfg" }, | |
582 | [MC_CMD_NVRAM_TYPE_DYNAMIC_CFG_PORT1] = { 1, "sfc_dynamic_cfg" }, | |
583 | [MC_CMD_NVRAM_TYPE_EXP_ROM] = { 0, "sfc_exp_rom" }, | |
584 | [MC_CMD_NVRAM_TYPE_EXP_ROM_CFG_PORT0] = { 0, "sfc_exp_rom_cfg" }, | |
585 | [MC_CMD_NVRAM_TYPE_EXP_ROM_CFG_PORT1] = { 1, "sfc_exp_rom_cfg" }, | |
586 | [MC_CMD_NVRAM_TYPE_PHY_PORT0] = { 0, "sfc_phy_fw" }, | |
587 | [MC_CMD_NVRAM_TYPE_PHY_PORT1] = { 1, "sfc_phy_fw" }, | |
588 | }; | |
589 | ||
590 | static int siena_mtd_probe_partition(struct efx_nic *efx, | |
591 | struct efx_mtd *efx_mtd, | |
592 | unsigned int part_id, | |
593 | unsigned int type) | |
594 | { | |
595 | struct efx_mtd_partition *part = &efx_mtd->part[part_id]; | |
18e83e4c | 596 | const struct siena_nvram_type_info *info; |
8880f4ec BH |
597 | size_t size, erase_size; |
598 | bool protected; | |
599 | int rc; | |
600 | ||
601 | if (type >= ARRAY_SIZE(siena_nvram_types)) | |
602 | return -ENODEV; | |
603 | ||
604 | info = &siena_nvram_types[type]; | |
605 | ||
606 | if (info->port != efx_port_num(efx)) | |
607 | return -ENODEV; | |
608 | ||
609 | rc = efx_mcdi_nvram_info(efx, type, &size, &erase_size, &protected); | |
610 | if (rc) | |
611 | return rc; | |
612 | if (protected) | |
613 | return -ENODEV; /* hide it */ | |
614 | ||
615 | part->mcdi.nvram_type = type; | |
616 | part->type_name = info->name; | |
617 | ||
618 | part->mtd.type = MTD_NORFLASH; | |
619 | part->mtd.flags = MTD_CAP_NORFLASH; | |
620 | part->mtd.size = size; | |
621 | part->mtd.erasesize = erase_size; | |
622 | ||
623 | return 0; | |
624 | } | |
625 | ||
626 | static int siena_mtd_get_fw_subtypes(struct efx_nic *efx, | |
627 | struct efx_mtd *efx_mtd) | |
628 | { | |
629 | struct efx_mtd_partition *part; | |
05a9320f | 630 | uint16_t fw_subtype_list[MC_CMD_GET_BOARD_CFG_OUT_FW_SUBTYPE_LIST_MINNUM]; |
8880f4ec BH |
631 | int rc; |
632 | ||
6aa9c7f6 | 633 | rc = efx_mcdi_get_board_cfg(efx, NULL, fw_subtype_list, NULL); |
8880f4ec BH |
634 | if (rc) |
635 | return rc; | |
636 | ||
637 | efx_for_each_partition(part, efx_mtd) | |
638 | part->mcdi.fw_subtype = fw_subtype_list[part->mcdi.nvram_type]; | |
639 | ||
640 | return 0; | |
641 | } | |
642 | ||
643 | static int siena_mtd_probe(struct efx_nic *efx) | |
644 | { | |
645 | struct efx_mtd *efx_mtd; | |
646 | int rc = -ENODEV; | |
647 | u32 nvram_types; | |
648 | unsigned int type; | |
649 | ||
650 | ASSERT_RTNL(); | |
651 | ||
652 | rc = efx_mcdi_nvram_types(efx, &nvram_types); | |
653 | if (rc) | |
654 | return rc; | |
655 | ||
656 | efx_mtd = kzalloc(sizeof(*efx_mtd) + | |
657 | hweight32(nvram_types) * sizeof(efx_mtd->part[0]), | |
658 | GFP_KERNEL); | |
659 | if (!efx_mtd) | |
660 | return -ENOMEM; | |
661 | ||
662 | efx_mtd->name = "Siena NVRAM manager"; | |
663 | ||
664 | efx_mtd->ops = &siena_mtd_ops; | |
665 | ||
666 | type = 0; | |
667 | efx_mtd->n_parts = 0; | |
668 | ||
669 | while (nvram_types != 0) { | |
670 | if (nvram_types & 1) { | |
671 | rc = siena_mtd_probe_partition(efx, efx_mtd, | |
672 | efx_mtd->n_parts, type); | |
673 | if (rc == 0) | |
674 | efx_mtd->n_parts++; | |
675 | else if (rc != -ENODEV) | |
676 | goto fail; | |
677 | } | |
678 | type++; | |
679 | nvram_types >>= 1; | |
680 | } | |
681 | ||
682 | rc = siena_mtd_get_fw_subtypes(efx, efx_mtd); | |
683 | if (rc) | |
684 | goto fail; | |
685 | ||
686 | rc = efx_mtd_probe_device(efx, efx_mtd); | |
687 | fail: | |
688 | if (rc) | |
689 | kfree(efx_mtd); | |
690 | return rc; | |
691 | } | |
692 |