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c82ee6d3 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 | 2 | /* |
af36d7f0 JG |
3 | * libata-core.c - helper library for ATA |
4 | * | |
af36d7f0 JG |
5 | * Copyright 2003-2004 Red Hat, Inc. All rights reserved. |
6 | * Copyright 2003-2004 Jeff Garzik | |
7 | * | |
af36d7f0 | 8 | * libata documentation is available via 'make {ps|pdf}docs', |
19285f3c | 9 | * as Documentation/driver-api/libata.rst |
af36d7f0 JG |
10 | * |
11 | * Hardware documentation available from http://www.t13.org/ and | |
12 | * http://www.sata-io.org/ | |
13 | * | |
92c52c52 AC |
14 | * Standards documents from: |
15 | * http://www.t13.org (ATA standards, PCI DMA IDE spec) | |
16 | * http://www.t10.org (SCSI MMC - for ATAPI MMC) | |
17 | * http://www.sata-io.org (SATA) | |
18 | * http://www.compactflash.org (CF) | |
19 | * http://www.qic.org (QIC157 - Tape and DSC) | |
20 | * http://www.ce-ata.org (CE-ATA: not supported) | |
a52fbcfc BZ |
21 | * |
22 | * libata is essentially a library of internal helper functions for | |
23 | * low-level ATA host controller drivers. As such, the API/ABI is | |
24 | * likely to change as new drivers are added and updated. | |
25 | * Do not depend on ABI/API stability. | |
1da177e4 LT |
26 | */ |
27 | ||
1da177e4 LT |
28 | #include <linux/kernel.h> |
29 | #include <linux/module.h> | |
30 | #include <linux/pci.h> | |
31 | #include <linux/init.h> | |
32 | #include <linux/list.h> | |
33 | #include <linux/mm.h> | |
1da177e4 LT |
34 | #include <linux/spinlock.h> |
35 | #include <linux/blkdev.h> | |
36 | #include <linux/delay.h> | |
37 | #include <linux/timer.h> | |
848c3920 | 38 | #include <linux/time.h> |
1da177e4 LT |
39 | #include <linux/interrupt.h> |
40 | #include <linux/completion.h> | |
41 | #include <linux/suspend.h> | |
42 | #include <linux/workqueue.h> | |
378f058c | 43 | #include <linux/scatterlist.h> |
2dcb407e | 44 | #include <linux/io.h> |
e18086d6 | 45 | #include <linux/log2.h> |
5a0e3ad6 | 46 | #include <linux/slab.h> |
428ac5fc | 47 | #include <linux/glob.h> |
1da177e4 | 48 | #include <scsi/scsi.h> |
193515d5 | 49 | #include <scsi/scsi_cmnd.h> |
1da177e4 LT |
50 | #include <scsi/scsi_host.h> |
51 | #include <linux/libata.h> | |
1da177e4 | 52 | #include <asm/byteorder.h> |
fe5af0cc | 53 | #include <asm/unaligned.h> |
140b5e59 | 54 | #include <linux/cdrom.h> |
9990b6f3 | 55 | #include <linux/ratelimit.h> |
eb25cb99 | 56 | #include <linux/leds.h> |
9ee4f393 | 57 | #include <linux/pm_runtime.h> |
b7db04d9 | 58 | #include <linux/platform_device.h> |
bbf5a097 | 59 | #include <asm/setup.h> |
1da177e4 | 60 | |
255c03d1 HR |
61 | #define CREATE_TRACE_POINTS |
62 | #include <trace/events/libata.h> | |
63 | ||
1da177e4 | 64 | #include "libata.h" |
d9027470 | 65 | #include "libata-transport.h" |
fda0efc5 | 66 | |
029cfd6b | 67 | const struct ata_port_operations ata_base_port_ops = { |
0aa1113d | 68 | .prereset = ata_std_prereset, |
203c75b8 | 69 | .postreset = ata_std_postreset, |
a1efdaba | 70 | .error_handler = ata_std_error_handler, |
e4a9c373 DW |
71 | .sched_eh = ata_std_sched_eh, |
72 | .end_eh = ata_std_end_eh, | |
029cfd6b TH |
73 | }; |
74 | ||
75 | const struct ata_port_operations sata_port_ops = { | |
76 | .inherits = &ata_base_port_ops, | |
77 | ||
78 | .qc_defer = ata_std_qc_defer, | |
57c9efdf | 79 | .hardreset = sata_std_hardreset, |
029cfd6b | 80 | }; |
a52fbcfc | 81 | EXPORT_SYMBOL_GPL(sata_port_ops); |
029cfd6b | 82 | |
3373efd8 TH |
83 | static unsigned int ata_dev_init_params(struct ata_device *dev, |
84 | u16 heads, u16 sectors); | |
85 | static unsigned int ata_dev_set_xfermode(struct ata_device *dev); | |
86 | static void ata_dev_xfermask(struct ata_device *dev); | |
75683fe7 | 87 | static unsigned long ata_dev_blacklisted(const struct ata_device *dev); |
1da177e4 | 88 | |
a78f57af | 89 | atomic_t ata_print_id = ATOMIC_INIT(0); |
1da177e4 | 90 | |
bf89b0bf | 91 | #ifdef CONFIG_ATA_FORCE |
33267325 TH |
92 | struct ata_force_param { |
93 | const char *name; | |
8ba5a45c BZ |
94 | u8 cbl; |
95 | u8 spd_limit; | |
f0a6d77b | 96 | unsigned int xfer_mask; |
33267325 TH |
97 | unsigned int horkage_on; |
98 | unsigned int horkage_off; | |
3af9ca4d DLM |
99 | u16 lflags_on; |
100 | u16 lflags_off; | |
33267325 TH |
101 | }; |
102 | ||
103 | struct ata_force_ent { | |
104 | int port; | |
105 | int device; | |
106 | struct ata_force_param param; | |
107 | }; | |
108 | ||
109 | static struct ata_force_ent *ata_force_tbl; | |
110 | static int ata_force_tbl_size; | |
111 | ||
bbf5a097 | 112 | static char ata_force_param_buf[COMMAND_LINE_SIZE] __initdata; |
7afb4222 TH |
113 | /* param_buf is thrown away after initialization, disallow read */ |
114 | module_param_string(force, ata_force_param_buf, sizeof(ata_force_param_buf), 0); | |
8c27ceff | 115 | MODULE_PARM_DESC(force, "Force ATA configurations including cable type, link speed and transfer mode (see Documentation/admin-guide/kernel-parameters.rst for details)"); |
bf89b0bf | 116 | #endif |
33267325 | 117 | |
2486fa56 | 118 | static int atapi_enabled = 1; |
1623c81e | 119 | module_param(atapi_enabled, int, 0444); |
ad5d8eac | 120 | MODULE_PARM_DESC(atapi_enabled, "Enable discovery of ATAPI devices (0=off, 1=on [default])"); |
1623c81e | 121 | |
c5c61bda | 122 | static int atapi_dmadir = 0; |
95de719a | 123 | module_param(atapi_dmadir, int, 0444); |
ad5d8eac | 124 | MODULE_PARM_DESC(atapi_dmadir, "Enable ATAPI DMADIR bridge support (0=off [default], 1=on)"); |
95de719a | 125 | |
baf4fdfa ML |
126 | int atapi_passthru16 = 1; |
127 | module_param(atapi_passthru16, int, 0444); | |
ad5d8eac | 128 | MODULE_PARM_DESC(atapi_passthru16, "Enable ATA_16 passthru for ATAPI devices (0=off, 1=on [default])"); |
baf4fdfa | 129 | |
c3c013a2 JG |
130 | int libata_fua = 0; |
131 | module_param_named(fua, libata_fua, int, 0444); | |
ad5d8eac | 132 | MODULE_PARM_DESC(fua, "FUA support (0=off [default], 1=on)"); |
c3c013a2 | 133 | |
2dcb407e | 134 | static int ata_ignore_hpa; |
1e999736 AC |
135 | module_param_named(ignore_hpa, ata_ignore_hpa, int, 0644); |
136 | MODULE_PARM_DESC(ignore_hpa, "Ignore HPA limit (0=keep BIOS limits, 1=ignore limits, using full disk)"); | |
137 | ||
b3a70601 AC |
138 | static int libata_dma_mask = ATA_DMA_MASK_ATA|ATA_DMA_MASK_ATAPI|ATA_DMA_MASK_CFA; |
139 | module_param_named(dma, libata_dma_mask, int, 0444); | |
140 | MODULE_PARM_DESC(dma, "DMA enable/disable (0x1==ATA, 0x2==ATAPI, 0x4==CF)"); | |
141 | ||
87fbc5a0 | 142 | static int ata_probe_timeout; |
a8601e5f AM |
143 | module_param(ata_probe_timeout, int, 0444); |
144 | MODULE_PARM_DESC(ata_probe_timeout, "Set ATA probing timeout (seconds)"); | |
145 | ||
6ebe9d86 | 146 | int libata_noacpi = 0; |
d7d0dad6 | 147 | module_param_named(noacpi, libata_noacpi, int, 0444); |
ad5d8eac | 148 | MODULE_PARM_DESC(noacpi, "Disable the use of ACPI in probe/suspend/resume (0=off [default], 1=on)"); |
11ef697b | 149 | |
ae8d4ee7 AC |
150 | int libata_allow_tpm = 0; |
151 | module_param_named(allow_tpm, libata_allow_tpm, int, 0444); | |
ad5d8eac | 152 | MODULE_PARM_DESC(allow_tpm, "Permit the use of TPM commands (0=off [default], 1=on)"); |
ae8d4ee7 | 153 | |
e7ecd435 TH |
154 | static int atapi_an; |
155 | module_param(atapi_an, int, 0444); | |
156 | MODULE_PARM_DESC(atapi_an, "Enable ATAPI AN media presence notification (0=0ff [default], 1=on)"); | |
157 | ||
1da177e4 LT |
158 | MODULE_AUTHOR("Jeff Garzik"); |
159 | MODULE_DESCRIPTION("Library module for ATA devices"); | |
160 | MODULE_LICENSE("GPL"); | |
161 | MODULE_VERSION(DRV_VERSION); | |
162 | ||
891fd7c6 DLM |
163 | static inline bool ata_dev_print_info(struct ata_device *dev) |
164 | { | |
165 | struct ata_eh_context *ehc = &dev->link->eh_context; | |
166 | ||
167 | return ehc->i.flags & ATA_EHI_PRINTINFO; | |
168 | } | |
0baab86b | 169 | |
9913ff8a TH |
170 | static bool ata_sstatus_online(u32 sstatus) |
171 | { | |
172 | return (sstatus & 0xf) == 0x3; | |
173 | } | |
174 | ||
1eca4365 TH |
175 | /** |
176 | * ata_link_next - link iteration helper | |
177 | * @link: the previous link, NULL to start | |
178 | * @ap: ATA port containing links to iterate | |
179 | * @mode: iteration mode, one of ATA_LITER_* | |
180 | * | |
181 | * LOCKING: | |
182 | * Host lock or EH context. | |
aadffb68 | 183 | * |
1eca4365 TH |
184 | * RETURNS: |
185 | * Pointer to the next link. | |
aadffb68 | 186 | */ |
1eca4365 TH |
187 | struct ata_link *ata_link_next(struct ata_link *link, struct ata_port *ap, |
188 | enum ata_link_iter_mode mode) | |
aadffb68 | 189 | { |
1eca4365 TH |
190 | BUG_ON(mode != ATA_LITER_EDGE && |
191 | mode != ATA_LITER_PMP_FIRST && mode != ATA_LITER_HOST_FIRST); | |
192 | ||
aadffb68 | 193 | /* NULL link indicates start of iteration */ |
1eca4365 TH |
194 | if (!link) |
195 | switch (mode) { | |
196 | case ATA_LITER_EDGE: | |
197 | case ATA_LITER_PMP_FIRST: | |
198 | if (sata_pmp_attached(ap)) | |
199 | return ap->pmp_link; | |
df561f66 | 200 | fallthrough; |
1eca4365 TH |
201 | case ATA_LITER_HOST_FIRST: |
202 | return &ap->link; | |
203 | } | |
aadffb68 | 204 | |
1eca4365 TH |
205 | /* we just iterated over the host link, what's next? */ |
206 | if (link == &ap->link) | |
207 | switch (mode) { | |
208 | case ATA_LITER_HOST_FIRST: | |
209 | if (sata_pmp_attached(ap)) | |
210 | return ap->pmp_link; | |
df561f66 | 211 | fallthrough; |
1eca4365 TH |
212 | case ATA_LITER_PMP_FIRST: |
213 | if (unlikely(ap->slave_link)) | |
b1c72916 | 214 | return ap->slave_link; |
df561f66 | 215 | fallthrough; |
1eca4365 | 216 | case ATA_LITER_EDGE: |
aadffb68 | 217 | return NULL; |
b1c72916 | 218 | } |
aadffb68 | 219 | |
b1c72916 TH |
220 | /* slave_link excludes PMP */ |
221 | if (unlikely(link == ap->slave_link)) | |
222 | return NULL; | |
223 | ||
1eca4365 | 224 | /* we were over a PMP link */ |
aadffb68 TH |
225 | if (++link < ap->pmp_link + ap->nr_pmp_links) |
226 | return link; | |
1eca4365 TH |
227 | |
228 | if (mode == ATA_LITER_PMP_FIRST) | |
229 | return &ap->link; | |
230 | ||
aadffb68 TH |
231 | return NULL; |
232 | } | |
a52fbcfc | 233 | EXPORT_SYMBOL_GPL(ata_link_next); |
aadffb68 | 234 | |
1eca4365 TH |
235 | /** |
236 | * ata_dev_next - device iteration helper | |
237 | * @dev: the previous device, NULL to start | |
238 | * @link: ATA link containing devices to iterate | |
239 | * @mode: iteration mode, one of ATA_DITER_* | |
240 | * | |
241 | * LOCKING: | |
242 | * Host lock or EH context. | |
243 | * | |
244 | * RETURNS: | |
245 | * Pointer to the next device. | |
246 | */ | |
247 | struct ata_device *ata_dev_next(struct ata_device *dev, struct ata_link *link, | |
248 | enum ata_dev_iter_mode mode) | |
249 | { | |
250 | BUG_ON(mode != ATA_DITER_ENABLED && mode != ATA_DITER_ENABLED_REVERSE && | |
251 | mode != ATA_DITER_ALL && mode != ATA_DITER_ALL_REVERSE); | |
252 | ||
253 | /* NULL dev indicates start of iteration */ | |
254 | if (!dev) | |
255 | switch (mode) { | |
256 | case ATA_DITER_ENABLED: | |
257 | case ATA_DITER_ALL: | |
258 | dev = link->device; | |
259 | goto check; | |
260 | case ATA_DITER_ENABLED_REVERSE: | |
261 | case ATA_DITER_ALL_REVERSE: | |
262 | dev = link->device + ata_link_max_devices(link) - 1; | |
263 | goto check; | |
264 | } | |
265 | ||
266 | next: | |
267 | /* move to the next one */ | |
268 | switch (mode) { | |
269 | case ATA_DITER_ENABLED: | |
270 | case ATA_DITER_ALL: | |
271 | if (++dev < link->device + ata_link_max_devices(link)) | |
272 | goto check; | |
273 | return NULL; | |
274 | case ATA_DITER_ENABLED_REVERSE: | |
275 | case ATA_DITER_ALL_REVERSE: | |
276 | if (--dev >= link->device) | |
277 | goto check; | |
278 | return NULL; | |
279 | } | |
280 | ||
281 | check: | |
282 | if ((mode == ATA_DITER_ENABLED || mode == ATA_DITER_ENABLED_REVERSE) && | |
283 | !ata_dev_enabled(dev)) | |
284 | goto next; | |
285 | return dev; | |
286 | } | |
a52fbcfc | 287 | EXPORT_SYMBOL_GPL(ata_dev_next); |
1eca4365 | 288 | |
b1c72916 TH |
289 | /** |
290 | * ata_dev_phys_link - find physical link for a device | |
291 | * @dev: ATA device to look up physical link for | |
292 | * | |
293 | * Look up physical link which @dev is attached to. Note that | |
294 | * this is different from @dev->link only when @dev is on slave | |
295 | * link. For all other cases, it's the same as @dev->link. | |
296 | * | |
297 | * LOCKING: | |
298 | * Don't care. | |
299 | * | |
300 | * RETURNS: | |
301 | * Pointer to the found physical link. | |
302 | */ | |
303 | struct ata_link *ata_dev_phys_link(struct ata_device *dev) | |
304 | { | |
305 | struct ata_port *ap = dev->link->ap; | |
306 | ||
307 | if (!ap->slave_link) | |
308 | return dev->link; | |
309 | if (!dev->devno) | |
310 | return &ap->link; | |
311 | return ap->slave_link; | |
312 | } | |
313 | ||
bf89b0bf | 314 | #ifdef CONFIG_ATA_FORCE |
33267325 TH |
315 | /** |
316 | * ata_force_cbl - force cable type according to libata.force | |
4cdfa1b3 | 317 | * @ap: ATA port of interest |
33267325 TH |
318 | * |
319 | * Force cable type according to libata.force and whine about it. | |
320 | * The last entry which has matching port number is used, so it | |
321 | * can be specified as part of device force parameters. For | |
322 | * example, both "a:40c,1.00:udma4" and "1.00:40c,udma4" have the | |
323 | * same effect. | |
324 | * | |
325 | * LOCKING: | |
326 | * EH context. | |
327 | */ | |
328 | void ata_force_cbl(struct ata_port *ap) | |
329 | { | |
330 | int i; | |
331 | ||
332 | for (i = ata_force_tbl_size - 1; i >= 0; i--) { | |
333 | const struct ata_force_ent *fe = &ata_force_tbl[i]; | |
334 | ||
335 | if (fe->port != -1 && fe->port != ap->print_id) | |
336 | continue; | |
337 | ||
338 | if (fe->param.cbl == ATA_CBL_NONE) | |
339 | continue; | |
340 | ||
341 | ap->cbl = fe->param.cbl; | |
a9a79dfe | 342 | ata_port_notice(ap, "FORCE: cable set to %s\n", fe->param.name); |
33267325 TH |
343 | return; |
344 | } | |
345 | } | |
346 | ||
347 | /** | |
05944bdf | 348 | * ata_force_link_limits - force link limits according to libata.force |
33267325 TH |
349 | * @link: ATA link of interest |
350 | * | |
05944bdf TH |
351 | * Force link flags and SATA spd limit according to libata.force |
352 | * and whine about it. When only the port part is specified | |
353 | * (e.g. 1:), the limit applies to all links connected to both | |
354 | * the host link and all fan-out ports connected via PMP. If the | |
355 | * device part is specified as 0 (e.g. 1.00:), it specifies the | |
356 | * first fan-out link not the host link. Device number 15 always | |
b1c72916 TH |
357 | * points to the host link whether PMP is attached or not. If the |
358 | * controller has slave link, device number 16 points to it. | |
33267325 TH |
359 | * |
360 | * LOCKING: | |
361 | * EH context. | |
362 | */ | |
05944bdf | 363 | static void ata_force_link_limits(struct ata_link *link) |
33267325 | 364 | { |
05944bdf | 365 | bool did_spd = false; |
b1c72916 TH |
366 | int linkno = link->pmp; |
367 | int i; | |
33267325 TH |
368 | |
369 | if (ata_is_host_link(link)) | |
b1c72916 | 370 | linkno += 15; |
33267325 TH |
371 | |
372 | for (i = ata_force_tbl_size - 1; i >= 0; i--) { | |
373 | const struct ata_force_ent *fe = &ata_force_tbl[i]; | |
374 | ||
375 | if (fe->port != -1 && fe->port != link->ap->print_id) | |
376 | continue; | |
377 | ||
378 | if (fe->device != -1 && fe->device != linkno) | |
379 | continue; | |
380 | ||
05944bdf TH |
381 | /* only honor the first spd limit */ |
382 | if (!did_spd && fe->param.spd_limit) { | |
383 | link->hw_sata_spd_limit = (1 << fe->param.spd_limit) - 1; | |
a9a79dfe | 384 | ata_link_notice(link, "FORCE: PHY spd limit set to %s\n", |
05944bdf TH |
385 | fe->param.name); |
386 | did_spd = true; | |
387 | } | |
33267325 | 388 | |
05944bdf | 389 | /* let lflags stack */ |
3af9ca4d DLM |
390 | if (fe->param.lflags_on) { |
391 | link->flags |= fe->param.lflags_on; | |
a9a79dfe | 392 | ata_link_notice(link, |
05944bdf | 393 | "FORCE: link flag 0x%x forced -> 0x%x\n", |
3af9ca4d DLM |
394 | fe->param.lflags_on, link->flags); |
395 | } | |
396 | if (fe->param.lflags_off) { | |
397 | link->flags &= ~fe->param.lflags_off; | |
398 | ata_link_notice(link, | |
399 | "FORCE: link flag 0x%x cleared -> 0x%x\n", | |
400 | fe->param.lflags_off, link->flags); | |
05944bdf | 401 | } |
33267325 TH |
402 | } |
403 | } | |
404 | ||
405 | /** | |
406 | * ata_force_xfermask - force xfermask according to libata.force | |
407 | * @dev: ATA device of interest | |
408 | * | |
409 | * Force xfer_mask according to libata.force and whine about it. | |
410 | * For consistency with link selection, device number 15 selects | |
411 | * the first device connected to the host link. | |
412 | * | |
413 | * LOCKING: | |
414 | * EH context. | |
415 | */ | |
416 | static void ata_force_xfermask(struct ata_device *dev) | |
417 | { | |
418 | int devno = dev->link->pmp + dev->devno; | |
419 | int alt_devno = devno; | |
420 | int i; | |
421 | ||
b1c72916 TH |
422 | /* allow n.15/16 for devices attached to host port */ |
423 | if (ata_is_host_link(dev->link)) | |
424 | alt_devno += 15; | |
33267325 TH |
425 | |
426 | for (i = ata_force_tbl_size - 1; i >= 0; i--) { | |
427 | const struct ata_force_ent *fe = &ata_force_tbl[i]; | |
f0a6d77b | 428 | unsigned int pio_mask, mwdma_mask, udma_mask; |
33267325 TH |
429 | |
430 | if (fe->port != -1 && fe->port != dev->link->ap->print_id) | |
431 | continue; | |
432 | ||
433 | if (fe->device != -1 && fe->device != devno && | |
434 | fe->device != alt_devno) | |
435 | continue; | |
436 | ||
437 | if (!fe->param.xfer_mask) | |
438 | continue; | |
439 | ||
440 | ata_unpack_xfermask(fe->param.xfer_mask, | |
441 | &pio_mask, &mwdma_mask, &udma_mask); | |
442 | if (udma_mask) | |
443 | dev->udma_mask = udma_mask; | |
444 | else if (mwdma_mask) { | |
445 | dev->udma_mask = 0; | |
446 | dev->mwdma_mask = mwdma_mask; | |
447 | } else { | |
448 | dev->udma_mask = 0; | |
449 | dev->mwdma_mask = 0; | |
450 | dev->pio_mask = pio_mask; | |
451 | } | |
452 | ||
a9a79dfe JP |
453 | ata_dev_notice(dev, "FORCE: xfer_mask set to %s\n", |
454 | fe->param.name); | |
33267325 TH |
455 | return; |
456 | } | |
457 | } | |
458 | ||
459 | /** | |
460 | * ata_force_horkage - force horkage according to libata.force | |
461 | * @dev: ATA device of interest | |
462 | * | |
463 | * Force horkage according to libata.force and whine about it. | |
464 | * For consistency with link selection, device number 15 selects | |
465 | * the first device connected to the host link. | |
466 | * | |
467 | * LOCKING: | |
468 | * EH context. | |
469 | */ | |
470 | static void ata_force_horkage(struct ata_device *dev) | |
471 | { | |
472 | int devno = dev->link->pmp + dev->devno; | |
473 | int alt_devno = devno; | |
474 | int i; | |
475 | ||
b1c72916 TH |
476 | /* allow n.15/16 for devices attached to host port */ |
477 | if (ata_is_host_link(dev->link)) | |
478 | alt_devno += 15; | |
33267325 TH |
479 | |
480 | for (i = 0; i < ata_force_tbl_size; i++) { | |
481 | const struct ata_force_ent *fe = &ata_force_tbl[i]; | |
482 | ||
483 | if (fe->port != -1 && fe->port != dev->link->ap->print_id) | |
484 | continue; | |
485 | ||
486 | if (fe->device != -1 && fe->device != devno && | |
487 | fe->device != alt_devno) | |
488 | continue; | |
489 | ||
490 | if (!(~dev->horkage & fe->param.horkage_on) && | |
491 | !(dev->horkage & fe->param.horkage_off)) | |
492 | continue; | |
493 | ||
494 | dev->horkage |= fe->param.horkage_on; | |
495 | dev->horkage &= ~fe->param.horkage_off; | |
496 | ||
a9a79dfe JP |
497 | ata_dev_notice(dev, "FORCE: horkage modified (%s)\n", |
498 | fe->param.name); | |
33267325 TH |
499 | } |
500 | } | |
bf89b0bf BZ |
501 | #else |
502 | static inline void ata_force_link_limits(struct ata_link *link) { } | |
503 | static inline void ata_force_xfermask(struct ata_device *dev) { } | |
504 | static inline void ata_force_horkage(struct ata_device *dev) { } | |
505 | #endif | |
33267325 | 506 | |
436d34b3 TH |
507 | /** |
508 | * atapi_cmd_type - Determine ATAPI command type from SCSI opcode | |
509 | * @opcode: SCSI opcode | |
510 | * | |
511 | * Determine ATAPI command type from @opcode. | |
512 | * | |
513 | * LOCKING: | |
514 | * None. | |
515 | * | |
516 | * RETURNS: | |
517 | * ATAPI_{READ|WRITE|READ_CD|PASS_THRU|MISC} | |
518 | */ | |
519 | int atapi_cmd_type(u8 opcode) | |
520 | { | |
521 | switch (opcode) { | |
522 | case GPCMD_READ_10: | |
523 | case GPCMD_READ_12: | |
524 | return ATAPI_READ; | |
525 | ||
526 | case GPCMD_WRITE_10: | |
527 | case GPCMD_WRITE_12: | |
528 | case GPCMD_WRITE_AND_VERIFY_10: | |
529 | return ATAPI_WRITE; | |
530 | ||
531 | case GPCMD_READ_CD: | |
532 | case GPCMD_READ_CD_MSF: | |
533 | return ATAPI_READ_CD; | |
534 | ||
e52dcc48 TH |
535 | case ATA_16: |
536 | case ATA_12: | |
537 | if (atapi_passthru16) | |
538 | return ATAPI_PASS_THRU; | |
df561f66 | 539 | fallthrough; |
436d34b3 TH |
540 | default: |
541 | return ATAPI_MISC; | |
542 | } | |
543 | } | |
a52fbcfc | 544 | EXPORT_SYMBOL_GPL(atapi_cmd_type); |
436d34b3 | 545 | |
8cbd6df1 AL |
546 | static const u8 ata_rw_cmds[] = { |
547 | /* pio multi */ | |
548 | ATA_CMD_READ_MULTI, | |
549 | ATA_CMD_WRITE_MULTI, | |
550 | ATA_CMD_READ_MULTI_EXT, | |
551 | ATA_CMD_WRITE_MULTI_EXT, | |
9a3dccc4 TH |
552 | 0, |
553 | 0, | |
554 | 0, | |
555 | ATA_CMD_WRITE_MULTI_FUA_EXT, | |
8cbd6df1 AL |
556 | /* pio */ |
557 | ATA_CMD_PIO_READ, | |
558 | ATA_CMD_PIO_WRITE, | |
559 | ATA_CMD_PIO_READ_EXT, | |
560 | ATA_CMD_PIO_WRITE_EXT, | |
9a3dccc4 TH |
561 | 0, |
562 | 0, | |
563 | 0, | |
564 | 0, | |
8cbd6df1 AL |
565 | /* dma */ |
566 | ATA_CMD_READ, | |
567 | ATA_CMD_WRITE, | |
568 | ATA_CMD_READ_EXT, | |
9a3dccc4 TH |
569 | ATA_CMD_WRITE_EXT, |
570 | 0, | |
571 | 0, | |
572 | 0, | |
573 | ATA_CMD_WRITE_FUA_EXT | |
8cbd6df1 | 574 | }; |
1da177e4 LT |
575 | |
576 | /** | |
8cbd6df1 | 577 | * ata_rwcmd_protocol - set taskfile r/w commands and protocol |
bd056d7e TH |
578 | * @tf: command to examine and configure |
579 | * @dev: device tf belongs to | |
1da177e4 | 580 | * |
2e9edbf8 | 581 | * Examine the device configuration and tf->flags to calculate |
8cbd6df1 | 582 | * the proper read/write commands and protocol to use. |
1da177e4 LT |
583 | * |
584 | * LOCKING: | |
585 | * caller. | |
586 | */ | |
bd056d7e | 587 | static int ata_rwcmd_protocol(struct ata_taskfile *tf, struct ata_device *dev) |
1da177e4 | 588 | { |
9a3dccc4 | 589 | u8 cmd; |
1da177e4 | 590 | |
9a3dccc4 | 591 | int index, fua, lba48, write; |
2e9edbf8 | 592 | |
9a3dccc4 | 593 | fua = (tf->flags & ATA_TFLAG_FUA) ? 4 : 0; |
8cbd6df1 AL |
594 | lba48 = (tf->flags & ATA_TFLAG_LBA48) ? 2 : 0; |
595 | write = (tf->flags & ATA_TFLAG_WRITE) ? 1 : 0; | |
1da177e4 | 596 | |
8cbd6df1 AL |
597 | if (dev->flags & ATA_DFLAG_PIO) { |
598 | tf->protocol = ATA_PROT_PIO; | |
9a3dccc4 | 599 | index = dev->multi_count ? 0 : 8; |
9af5c9c9 | 600 | } else if (lba48 && (dev->link->ap->flags & ATA_FLAG_PIO_LBA48)) { |
8d238e01 AC |
601 | /* Unable to use DMA due to host limitation */ |
602 | tf->protocol = ATA_PROT_PIO; | |
0565c26d | 603 | index = dev->multi_count ? 0 : 8; |
8cbd6df1 AL |
604 | } else { |
605 | tf->protocol = ATA_PROT_DMA; | |
9a3dccc4 | 606 | index = 16; |
8cbd6df1 | 607 | } |
1da177e4 | 608 | |
9a3dccc4 TH |
609 | cmd = ata_rw_cmds[index + fua + lba48 + write]; |
610 | if (cmd) { | |
611 | tf->command = cmd; | |
612 | return 0; | |
613 | } | |
614 | return -1; | |
1da177e4 LT |
615 | } |
616 | ||
35b649fe TH |
617 | /** |
618 | * ata_tf_read_block - Read block address from ATA taskfile | |
619 | * @tf: ATA taskfile of interest | |
620 | * @dev: ATA device @tf belongs to | |
621 | * | |
622 | * LOCKING: | |
623 | * None. | |
624 | * | |
625 | * Read block address from @tf. This function can handle all | |
626 | * three address formats - LBA, LBA48 and CHS. tf->protocol and | |
627 | * flags select the address format to use. | |
628 | * | |
629 | * RETURNS: | |
630 | * Block address read from @tf. | |
631 | */ | |
cffd1ee9 | 632 | u64 ata_tf_read_block(const struct ata_taskfile *tf, struct ata_device *dev) |
35b649fe TH |
633 | { |
634 | u64 block = 0; | |
635 | ||
fe16d4f2 | 636 | if (tf->flags & ATA_TFLAG_LBA) { |
35b649fe TH |
637 | if (tf->flags & ATA_TFLAG_LBA48) { |
638 | block |= (u64)tf->hob_lbah << 40; | |
639 | block |= (u64)tf->hob_lbam << 32; | |
44901a96 | 640 | block |= (u64)tf->hob_lbal << 24; |
35b649fe TH |
641 | } else |
642 | block |= (tf->device & 0xf) << 24; | |
643 | ||
644 | block |= tf->lbah << 16; | |
645 | block |= tf->lbam << 8; | |
646 | block |= tf->lbal; | |
647 | } else { | |
648 | u32 cyl, head, sect; | |
649 | ||
650 | cyl = tf->lbam | (tf->lbah << 8); | |
651 | head = tf->device & 0xf; | |
652 | sect = tf->lbal; | |
653 | ||
ac8672ea | 654 | if (!sect) { |
a9a79dfe JP |
655 | ata_dev_warn(dev, |
656 | "device reported invalid CHS sector 0\n"); | |
cffd1ee9 | 657 | return U64_MAX; |
ac8672ea TH |
658 | } |
659 | ||
660 | block = (cyl * dev->heads + head) * dev->sectors + sect - 1; | |
35b649fe TH |
661 | } |
662 | ||
663 | return block; | |
664 | } | |
665 | ||
bd056d7e TH |
666 | /** |
667 | * ata_build_rw_tf - Build ATA taskfile for given read/write request | |
668 | * @tf: Target ATA taskfile | |
669 | * @dev: ATA device @tf belongs to | |
670 | * @block: Block address | |
671 | * @n_block: Number of blocks | |
672 | * @tf_flags: RW/FUA etc... | |
673 | * @tag: tag | |
8e061784 | 674 | * @class: IO priority class |
bd056d7e TH |
675 | * |
676 | * LOCKING: | |
677 | * None. | |
678 | * | |
679 | * Build ATA taskfile @tf for read/write request described by | |
680 | * @block, @n_block, @tf_flags and @tag on @dev. | |
681 | * | |
682 | * RETURNS: | |
683 | * | |
684 | * 0 on success, -ERANGE if the request is too large for @dev, | |
685 | * -EINVAL if the request is invalid. | |
686 | */ | |
687 | int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev, | |
688 | u64 block, u32 n_block, unsigned int tf_flags, | |
8e061784 | 689 | unsigned int tag, int class) |
bd056d7e TH |
690 | { |
691 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
692 | tf->flags |= tf_flags; | |
693 | ||
2e2cc676 | 694 | if (ata_ncq_enabled(dev) && !ata_tag_internal(tag)) { |
bd056d7e TH |
695 | /* yay, NCQ */ |
696 | if (!lba_48_ok(block, n_block)) | |
697 | return -ERANGE; | |
698 | ||
699 | tf->protocol = ATA_PROT_NCQ; | |
700 | tf->flags |= ATA_TFLAG_LBA | ATA_TFLAG_LBA48; | |
701 | ||
702 | if (tf->flags & ATA_TFLAG_WRITE) | |
703 | tf->command = ATA_CMD_FPDMA_WRITE; | |
704 | else | |
705 | tf->command = ATA_CMD_FPDMA_READ; | |
706 | ||
707 | tf->nsect = tag << 3; | |
708 | tf->hob_feature = (n_block >> 8) & 0xff; | |
709 | tf->feature = n_block & 0xff; | |
710 | ||
711 | tf->hob_lbah = (block >> 40) & 0xff; | |
712 | tf->hob_lbam = (block >> 32) & 0xff; | |
713 | tf->hob_lbal = (block >> 24) & 0xff; | |
714 | tf->lbah = (block >> 16) & 0xff; | |
715 | tf->lbam = (block >> 8) & 0xff; | |
716 | tf->lbal = block & 0xff; | |
717 | ||
9ca7cfa4 | 718 | tf->device = ATA_LBA; |
bd056d7e TH |
719 | if (tf->flags & ATA_TFLAG_FUA) |
720 | tf->device |= 1 << 7; | |
8e061784 | 721 | |
2360fa18 DLM |
722 | if (dev->flags & ATA_DFLAG_NCQ_PRIO_ENABLE && |
723 | class == IOPRIO_CLASS_RT) | |
724 | tf->hob_nsect |= ATA_PRIO_HIGH << ATA_SHIFT_PRIO; | |
bd056d7e TH |
725 | } else if (dev->flags & ATA_DFLAG_LBA) { |
726 | tf->flags |= ATA_TFLAG_LBA; | |
727 | ||
728 | if (lba_28_ok(block, n_block)) { | |
729 | /* use LBA28 */ | |
730 | tf->device |= (block >> 24) & 0xf; | |
731 | } else if (lba_48_ok(block, n_block)) { | |
732 | if (!(dev->flags & ATA_DFLAG_LBA48)) | |
733 | return -ERANGE; | |
734 | ||
735 | /* use LBA48 */ | |
736 | tf->flags |= ATA_TFLAG_LBA48; | |
737 | ||
738 | tf->hob_nsect = (n_block >> 8) & 0xff; | |
739 | ||
740 | tf->hob_lbah = (block >> 40) & 0xff; | |
741 | tf->hob_lbam = (block >> 32) & 0xff; | |
742 | tf->hob_lbal = (block >> 24) & 0xff; | |
743 | } else | |
744 | /* request too large even for LBA48 */ | |
745 | return -ERANGE; | |
746 | ||
747 | if (unlikely(ata_rwcmd_protocol(tf, dev) < 0)) | |
748 | return -EINVAL; | |
749 | ||
750 | tf->nsect = n_block & 0xff; | |
751 | ||
752 | tf->lbah = (block >> 16) & 0xff; | |
753 | tf->lbam = (block >> 8) & 0xff; | |
754 | tf->lbal = block & 0xff; | |
755 | ||
756 | tf->device |= ATA_LBA; | |
757 | } else { | |
758 | /* CHS */ | |
759 | u32 sect, head, cyl, track; | |
760 | ||
761 | /* The request -may- be too large for CHS addressing. */ | |
762 | if (!lba_28_ok(block, n_block)) | |
763 | return -ERANGE; | |
764 | ||
765 | if (unlikely(ata_rwcmd_protocol(tf, dev) < 0)) | |
766 | return -EINVAL; | |
767 | ||
768 | /* Convert LBA to CHS */ | |
769 | track = (u32)block / dev->sectors; | |
770 | cyl = track / dev->heads; | |
771 | head = track % dev->heads; | |
772 | sect = (u32)block % dev->sectors + 1; | |
773 | ||
bd056d7e TH |
774 | /* Check whether the converted CHS can fit. |
775 | Cylinder: 0-65535 | |
776 | Head: 0-15 | |
777 | Sector: 1-255*/ | |
778 | if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect)) | |
779 | return -ERANGE; | |
780 | ||
781 | tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */ | |
782 | tf->lbal = sect; | |
783 | tf->lbam = cyl; | |
784 | tf->lbah = cyl >> 8; | |
785 | tf->device |= head; | |
786 | } | |
787 | ||
788 | return 0; | |
789 | } | |
790 | ||
cb95d562 TH |
791 | /** |
792 | * ata_pack_xfermask - Pack pio, mwdma and udma masks into xfer_mask | |
793 | * @pio_mask: pio_mask | |
794 | * @mwdma_mask: mwdma_mask | |
795 | * @udma_mask: udma_mask | |
796 | * | |
797 | * Pack @pio_mask, @mwdma_mask and @udma_mask into a single | |
798 | * unsigned int xfer_mask. | |
799 | * | |
800 | * LOCKING: | |
801 | * None. | |
802 | * | |
803 | * RETURNS: | |
804 | * Packed xfer_mask. | |
805 | */ | |
f0a6d77b SS |
806 | unsigned int ata_pack_xfermask(unsigned int pio_mask, |
807 | unsigned int mwdma_mask, | |
808 | unsigned int udma_mask) | |
cb95d562 | 809 | { |
f0a6d77b | 810 | return ((pio_mask << ATA_SHIFT_PIO) & ATA_MASK_PIO) | |
cb95d562 TH |
811 | ((mwdma_mask << ATA_SHIFT_MWDMA) & ATA_MASK_MWDMA) | |
812 | ((udma_mask << ATA_SHIFT_UDMA) & ATA_MASK_UDMA); | |
813 | } | |
a52fbcfc | 814 | EXPORT_SYMBOL_GPL(ata_pack_xfermask); |
cb95d562 | 815 | |
c0489e4e TH |
816 | /** |
817 | * ata_unpack_xfermask - Unpack xfer_mask into pio, mwdma and udma masks | |
818 | * @xfer_mask: xfer_mask to unpack | |
819 | * @pio_mask: resulting pio_mask | |
820 | * @mwdma_mask: resulting mwdma_mask | |
821 | * @udma_mask: resulting udma_mask | |
822 | * | |
823 | * Unpack @xfer_mask into @pio_mask, @mwdma_mask and @udma_mask. | |
c9b5560a | 824 | * Any NULL destination masks will be ignored. |
c0489e4e | 825 | */ |
f0a6d77b SS |
826 | void ata_unpack_xfermask(unsigned int xfer_mask, unsigned int *pio_mask, |
827 | unsigned int *mwdma_mask, unsigned int *udma_mask) | |
c0489e4e TH |
828 | { |
829 | if (pio_mask) | |
830 | *pio_mask = (xfer_mask & ATA_MASK_PIO) >> ATA_SHIFT_PIO; | |
831 | if (mwdma_mask) | |
832 | *mwdma_mask = (xfer_mask & ATA_MASK_MWDMA) >> ATA_SHIFT_MWDMA; | |
833 | if (udma_mask) | |
834 | *udma_mask = (xfer_mask & ATA_MASK_UDMA) >> ATA_SHIFT_UDMA; | |
835 | } | |
836 | ||
cb95d562 | 837 | static const struct ata_xfer_ent { |
be9a50c8 | 838 | int shift, bits; |
cb95d562 TH |
839 | u8 base; |
840 | } ata_xfer_tbl[] = { | |
70cd071e TH |
841 | { ATA_SHIFT_PIO, ATA_NR_PIO_MODES, XFER_PIO_0 }, |
842 | { ATA_SHIFT_MWDMA, ATA_NR_MWDMA_MODES, XFER_MW_DMA_0 }, | |
843 | { ATA_SHIFT_UDMA, ATA_NR_UDMA_MODES, XFER_UDMA_0 }, | |
cb95d562 TH |
844 | { -1, }, |
845 | }; | |
846 | ||
847 | /** | |
848 | * ata_xfer_mask2mode - Find matching XFER_* for the given xfer_mask | |
849 | * @xfer_mask: xfer_mask of interest | |
850 | * | |
851 | * Return matching XFER_* value for @xfer_mask. Only the highest | |
852 | * bit of @xfer_mask is considered. | |
853 | * | |
854 | * LOCKING: | |
855 | * None. | |
856 | * | |
857 | * RETURNS: | |
70cd071e | 858 | * Matching XFER_* value, 0xff if no match found. |
cb95d562 | 859 | */ |
f0a6d77b | 860 | u8 ata_xfer_mask2mode(unsigned int xfer_mask) |
cb95d562 TH |
861 | { |
862 | int highbit = fls(xfer_mask) - 1; | |
863 | const struct ata_xfer_ent *ent; | |
864 | ||
865 | for (ent = ata_xfer_tbl; ent->shift >= 0; ent++) | |
866 | if (highbit >= ent->shift && highbit < ent->shift + ent->bits) | |
867 | return ent->base + highbit - ent->shift; | |
70cd071e | 868 | return 0xff; |
cb95d562 | 869 | } |
a52fbcfc | 870 | EXPORT_SYMBOL_GPL(ata_xfer_mask2mode); |
cb95d562 TH |
871 | |
872 | /** | |
873 | * ata_xfer_mode2mask - Find matching xfer_mask for XFER_* | |
874 | * @xfer_mode: XFER_* of interest | |
875 | * | |
876 | * Return matching xfer_mask for @xfer_mode. | |
877 | * | |
878 | * LOCKING: | |
879 | * None. | |
880 | * | |
881 | * RETURNS: | |
882 | * Matching xfer_mask, 0 if no match found. | |
883 | */ | |
f0a6d77b | 884 | unsigned int ata_xfer_mode2mask(u8 xfer_mode) |
cb95d562 TH |
885 | { |
886 | const struct ata_xfer_ent *ent; | |
887 | ||
888 | for (ent = ata_xfer_tbl; ent->shift >= 0; ent++) | |
889 | if (xfer_mode >= ent->base && xfer_mode < ent->base + ent->bits) | |
70cd071e TH |
890 | return ((2 << (ent->shift + xfer_mode - ent->base)) - 1) |
891 | & ~((1 << ent->shift) - 1); | |
cb95d562 TH |
892 | return 0; |
893 | } | |
a52fbcfc | 894 | EXPORT_SYMBOL_GPL(ata_xfer_mode2mask); |
cb95d562 TH |
895 | |
896 | /** | |
897 | * ata_xfer_mode2shift - Find matching xfer_shift for XFER_* | |
898 | * @xfer_mode: XFER_* of interest | |
899 | * | |
900 | * Return matching xfer_shift for @xfer_mode. | |
901 | * | |
902 | * LOCKING: | |
903 | * None. | |
904 | * | |
905 | * RETURNS: | |
906 | * Matching xfer_shift, -1 if no match found. | |
907 | */ | |
a28c1ab3 | 908 | int ata_xfer_mode2shift(u8 xfer_mode) |
cb95d562 TH |
909 | { |
910 | const struct ata_xfer_ent *ent; | |
911 | ||
912 | for (ent = ata_xfer_tbl; ent->shift >= 0; ent++) | |
913 | if (xfer_mode >= ent->base && xfer_mode < ent->base + ent->bits) | |
914 | return ent->shift; | |
915 | return -1; | |
916 | } | |
a52fbcfc | 917 | EXPORT_SYMBOL_GPL(ata_xfer_mode2shift); |
cb95d562 | 918 | |
1da177e4 | 919 | /** |
1da7b0d0 TH |
920 | * ata_mode_string - convert xfer_mask to string |
921 | * @xfer_mask: mask of bits supported; only highest bit counts. | |
1da177e4 LT |
922 | * |
923 | * Determine string which represents the highest speed | |
1da7b0d0 | 924 | * (highest bit in @modemask). |
1da177e4 LT |
925 | * |
926 | * LOCKING: | |
927 | * None. | |
928 | * | |
929 | * RETURNS: | |
930 | * Constant C string representing highest speed listed in | |
1da7b0d0 | 931 | * @mode_mask, or the constant C string "<n/a>". |
1da177e4 | 932 | */ |
f0a6d77b | 933 | const char *ata_mode_string(unsigned int xfer_mask) |
1da177e4 | 934 | { |
75f554bc TH |
935 | static const char * const xfer_mode_str[] = { |
936 | "PIO0", | |
937 | "PIO1", | |
938 | "PIO2", | |
939 | "PIO3", | |
940 | "PIO4", | |
b352e57d AC |
941 | "PIO5", |
942 | "PIO6", | |
75f554bc TH |
943 | "MWDMA0", |
944 | "MWDMA1", | |
945 | "MWDMA2", | |
b352e57d AC |
946 | "MWDMA3", |
947 | "MWDMA4", | |
75f554bc TH |
948 | "UDMA/16", |
949 | "UDMA/25", | |
950 | "UDMA/33", | |
951 | "UDMA/44", | |
952 | "UDMA/66", | |
953 | "UDMA/100", | |
954 | "UDMA/133", | |
955 | "UDMA7", | |
956 | }; | |
1da7b0d0 | 957 | int highbit; |
1da177e4 | 958 | |
1da7b0d0 TH |
959 | highbit = fls(xfer_mask) - 1; |
960 | if (highbit >= 0 && highbit < ARRAY_SIZE(xfer_mode_str)) | |
961 | return xfer_mode_str[highbit]; | |
1da177e4 | 962 | return "<n/a>"; |
1da177e4 | 963 | } |
a52fbcfc | 964 | EXPORT_SYMBOL_GPL(ata_mode_string); |
1da177e4 | 965 | |
d9027470 | 966 | const char *sata_spd_string(unsigned int spd) |
4c360c81 TH |
967 | { |
968 | static const char * const spd_str[] = { | |
969 | "1.5 Gbps", | |
970 | "3.0 Gbps", | |
8522ee25 | 971 | "6.0 Gbps", |
4c360c81 TH |
972 | }; |
973 | ||
974 | if (spd == 0 || (spd - 1) >= ARRAY_SIZE(spd_str)) | |
975 | return "<unknown>"; | |
976 | return spd_str[spd - 1]; | |
977 | } | |
978 | ||
1da177e4 LT |
979 | /** |
980 | * ata_dev_classify - determine device type based on ATA-spec signature | |
981 | * @tf: ATA taskfile register set for device to be identified | |
982 | * | |
983 | * Determine from taskfile register contents whether a device is | |
984 | * ATA or ATAPI, as per "Signature and persistence" section | |
985 | * of ATA/PI spec (volume 1, sect 5.14). | |
986 | * | |
987 | * LOCKING: | |
988 | * None. | |
989 | * | |
990 | * RETURNS: | |
9162c657 HR |
991 | * Device type, %ATA_DEV_ATA, %ATA_DEV_ATAPI, %ATA_DEV_PMP, |
992 | * %ATA_DEV_ZAC, or %ATA_DEV_UNKNOWN the event of failure. | |
1da177e4 | 993 | */ |
057ace5e | 994 | unsigned int ata_dev_classify(const struct ata_taskfile *tf) |
1da177e4 LT |
995 | { |
996 | /* Apple's open source Darwin code hints that some devices only | |
997 | * put a proper signature into the LBA mid/high registers, | |
998 | * So, we only check those. It's sufficient for uniqueness. | |
633273a3 TH |
999 | * |
1000 | * ATA/ATAPI-7 (d1532v1r1: Feb. 19, 2003) specified separate | |
1001 | * signatures for ATA and ATAPI devices attached on SerialATA, | |
1002 | * 0x3c/0xc3 and 0x69/0x96 respectively. However, SerialATA | |
1003 | * spec has never mentioned about using different signatures | |
1004 | * for ATA/ATAPI devices. Then, Serial ATA II: Port | |
1005 | * Multiplier specification began to use 0x69/0x96 to identify | |
1006 | * port multpliers and 0x3c/0xc3 to identify SEMB device. | |
1007 | * ATA/ATAPI-7 dropped descriptions about 0x3c/0xc3 and | |
1008 | * 0x69/0x96 shortly and described them as reserved for | |
1009 | * SerialATA. | |
1010 | * | |
1011 | * We follow the current spec and consider that 0x69/0x96 | |
1012 | * identifies a port multiplier and 0x3c/0xc3 a SEMB device. | |
79b42bab TH |
1013 | * Unfortunately, WDC WD1600JS-62MHB5 (a hard drive) reports |
1014 | * SEMB signature. This is worked around in | |
1015 | * ata_dev_read_id(). | |
1da177e4 | 1016 | */ |
6c952a0d | 1017 | if (tf->lbam == 0 && tf->lbah == 0) |
1da177e4 | 1018 | return ATA_DEV_ATA; |
1da177e4 | 1019 | |
6c952a0d | 1020 | if (tf->lbam == 0x14 && tf->lbah == 0xeb) |
1da177e4 | 1021 | return ATA_DEV_ATAPI; |
1da177e4 | 1022 | |
6c952a0d | 1023 | if (tf->lbam == 0x69 && tf->lbah == 0x96) |
633273a3 | 1024 | return ATA_DEV_PMP; |
633273a3 | 1025 | |
6c952a0d | 1026 | if (tf->lbam == 0x3c && tf->lbah == 0xc3) |
79b42bab | 1027 | return ATA_DEV_SEMB; |
633273a3 | 1028 | |
6c952a0d | 1029 | if (tf->lbam == 0xcd && tf->lbah == 0xab) |
9162c657 | 1030 | return ATA_DEV_ZAC; |
9162c657 | 1031 | |
1da177e4 LT |
1032 | return ATA_DEV_UNKNOWN; |
1033 | } | |
a52fbcfc | 1034 | EXPORT_SYMBOL_GPL(ata_dev_classify); |
1da177e4 | 1035 | |
1da177e4 | 1036 | /** |
6a62a04d | 1037 | * ata_id_string - Convert IDENTIFY DEVICE page into string |
1da177e4 LT |
1038 | * @id: IDENTIFY DEVICE results we will examine |
1039 | * @s: string into which data is output | |
1040 | * @ofs: offset into identify device page | |
1041 | * @len: length of string to return. must be an even number. | |
1042 | * | |
1043 | * The strings in the IDENTIFY DEVICE page are broken up into | |
1044 | * 16-bit chunks. Run through the string, and output each | |
1045 | * 8-bit chunk linearly, regardless of platform. | |
1046 | * | |
1047 | * LOCKING: | |
1048 | * caller. | |
1049 | */ | |
1050 | ||
6a62a04d TH |
1051 | void ata_id_string(const u16 *id, unsigned char *s, |
1052 | unsigned int ofs, unsigned int len) | |
1da177e4 LT |
1053 | { |
1054 | unsigned int c; | |
1055 | ||
963e4975 AC |
1056 | BUG_ON(len & 1); |
1057 | ||
1da177e4 LT |
1058 | while (len > 0) { |
1059 | c = id[ofs] >> 8; | |
1060 | *s = c; | |
1061 | s++; | |
1062 | ||
1063 | c = id[ofs] & 0xff; | |
1064 | *s = c; | |
1065 | s++; | |
1066 | ||
1067 | ofs++; | |
1068 | len -= 2; | |
1069 | } | |
1070 | } | |
a52fbcfc | 1071 | EXPORT_SYMBOL_GPL(ata_id_string); |
1da177e4 | 1072 | |
0e949ff3 | 1073 | /** |
6a62a04d | 1074 | * ata_id_c_string - Convert IDENTIFY DEVICE page into C string |
0e949ff3 TH |
1075 | * @id: IDENTIFY DEVICE results we will examine |
1076 | * @s: string into which data is output | |
1077 | * @ofs: offset into identify device page | |
1078 | * @len: length of string to return. must be an odd number. | |
1079 | * | |
6a62a04d | 1080 | * This function is identical to ata_id_string except that it |
0e949ff3 TH |
1081 | * trims trailing spaces and terminates the resulting string with |
1082 | * null. @len must be actual maximum length (even number) + 1. | |
1083 | * | |
1084 | * LOCKING: | |
1085 | * caller. | |
1086 | */ | |
6a62a04d TH |
1087 | void ata_id_c_string(const u16 *id, unsigned char *s, |
1088 | unsigned int ofs, unsigned int len) | |
0e949ff3 TH |
1089 | { |
1090 | unsigned char *p; | |
1091 | ||
6a62a04d | 1092 | ata_id_string(id, s, ofs, len - 1); |
0e949ff3 TH |
1093 | |
1094 | p = s + strnlen(s, len - 1); | |
1095 | while (p > s && p[-1] == ' ') | |
1096 | p--; | |
1097 | *p = '\0'; | |
1098 | } | |
a52fbcfc | 1099 | EXPORT_SYMBOL_GPL(ata_id_c_string); |
0baab86b | 1100 | |
db6f8759 TH |
1101 | static u64 ata_id_n_sectors(const u16 *id) |
1102 | { | |
1103 | if (ata_id_has_lba(id)) { | |
1104 | if (ata_id_has_lba48(id)) | |
968e594a | 1105 | return ata_id_u64(id, ATA_ID_LBA_CAPACITY_2); |
5eb8deb4 SS |
1106 | |
1107 | return ata_id_u32(id, ATA_ID_LBA_CAPACITY); | |
db6f8759 | 1108 | } |
5eb8deb4 SS |
1109 | |
1110 | if (ata_id_current_chs_valid(id)) | |
1111 | return (u32)id[ATA_ID_CUR_CYLS] * (u32)id[ATA_ID_CUR_HEADS] * | |
1112 | (u32)id[ATA_ID_CUR_SECTORS]; | |
1113 | ||
1114 | return (u32)id[ATA_ID_CYLS] * (u32)id[ATA_ID_HEADS] * | |
1115 | (u32)id[ATA_ID_SECTORS]; | |
db6f8759 TH |
1116 | } |
1117 | ||
a5987e0a | 1118 | u64 ata_tf_to_lba48(const struct ata_taskfile *tf) |
1e999736 AC |
1119 | { |
1120 | u64 sectors = 0; | |
1121 | ||
1122 | sectors |= ((u64)(tf->hob_lbah & 0xff)) << 40; | |
1123 | sectors |= ((u64)(tf->hob_lbam & 0xff)) << 32; | |
ba14a9c2 | 1124 | sectors |= ((u64)(tf->hob_lbal & 0xff)) << 24; |
1e999736 AC |
1125 | sectors |= (tf->lbah & 0xff) << 16; |
1126 | sectors |= (tf->lbam & 0xff) << 8; | |
1127 | sectors |= (tf->lbal & 0xff); | |
1128 | ||
a5987e0a | 1129 | return sectors; |
1e999736 AC |
1130 | } |
1131 | ||
a5987e0a | 1132 | u64 ata_tf_to_lba(const struct ata_taskfile *tf) |
1e999736 AC |
1133 | { |
1134 | u64 sectors = 0; | |
1135 | ||
1136 | sectors |= (tf->device & 0x0f) << 24; | |
1137 | sectors |= (tf->lbah & 0xff) << 16; | |
1138 | sectors |= (tf->lbam & 0xff) << 8; | |
1139 | sectors |= (tf->lbal & 0xff); | |
1140 | ||
a5987e0a | 1141 | return sectors; |
1e999736 AC |
1142 | } |
1143 | ||
1144 | /** | |
c728a914 TH |
1145 | * ata_read_native_max_address - Read native max address |
1146 | * @dev: target device | |
1147 | * @max_sectors: out parameter for the result native max address | |
1e999736 | 1148 | * |
c728a914 TH |
1149 | * Perform an LBA48 or LBA28 native size query upon the device in |
1150 | * question. | |
1e999736 | 1151 | * |
c728a914 TH |
1152 | * RETURNS: |
1153 | * 0 on success, -EACCES if command is aborted by the drive. | |
1154 | * -EIO on other errors. | |
1e999736 | 1155 | */ |
c728a914 | 1156 | static int ata_read_native_max_address(struct ata_device *dev, u64 *max_sectors) |
1e999736 | 1157 | { |
c728a914 | 1158 | unsigned int err_mask; |
1e999736 | 1159 | struct ata_taskfile tf; |
c728a914 | 1160 | int lba48 = ata_id_has_lba48(dev->id); |
1e999736 AC |
1161 | |
1162 | ata_tf_init(dev, &tf); | |
1163 | ||
c728a914 | 1164 | /* always clear all address registers */ |
1e999736 | 1165 | tf.flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; |
1e999736 | 1166 | |
c728a914 TH |
1167 | if (lba48) { |
1168 | tf.command = ATA_CMD_READ_NATIVE_MAX_EXT; | |
1169 | tf.flags |= ATA_TFLAG_LBA48; | |
1170 | } else | |
1171 | tf.command = ATA_CMD_READ_NATIVE_MAX; | |
1e999736 | 1172 | |
bd18bc04 | 1173 | tf.protocol = ATA_PROT_NODATA; |
c728a914 TH |
1174 | tf.device |= ATA_LBA; |
1175 | ||
2b789108 | 1176 | err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0); |
c728a914 | 1177 | if (err_mask) { |
a9a79dfe JP |
1178 | ata_dev_warn(dev, |
1179 | "failed to read native max address (err_mask=0x%x)\n", | |
1180 | err_mask); | |
efcef265 | 1181 | if (err_mask == AC_ERR_DEV && (tf.error & ATA_ABORTED)) |
c728a914 TH |
1182 | return -EACCES; |
1183 | return -EIO; | |
1184 | } | |
1e999736 | 1185 | |
c728a914 | 1186 | if (lba48) |
a5987e0a | 1187 | *max_sectors = ata_tf_to_lba48(&tf) + 1; |
c728a914 | 1188 | else |
a5987e0a | 1189 | *max_sectors = ata_tf_to_lba(&tf) + 1; |
2dcb407e | 1190 | if (dev->horkage & ATA_HORKAGE_HPA_SIZE) |
93328e11 | 1191 | (*max_sectors)--; |
c728a914 | 1192 | return 0; |
1e999736 AC |
1193 | } |
1194 | ||
1195 | /** | |
c728a914 TH |
1196 | * ata_set_max_sectors - Set max sectors |
1197 | * @dev: target device | |
6b38d1d1 | 1198 | * @new_sectors: new max sectors value to set for the device |
1e999736 | 1199 | * |
c728a914 TH |
1200 | * Set max sectors of @dev to @new_sectors. |
1201 | * | |
1202 | * RETURNS: | |
1203 | * 0 on success, -EACCES if command is aborted or denied (due to | |
1204 | * previous non-volatile SET_MAX) by the drive. -EIO on other | |
1205 | * errors. | |
1e999736 | 1206 | */ |
05027adc | 1207 | static int ata_set_max_sectors(struct ata_device *dev, u64 new_sectors) |
1e999736 | 1208 | { |
c728a914 | 1209 | unsigned int err_mask; |
1e999736 | 1210 | struct ata_taskfile tf; |
c728a914 | 1211 | int lba48 = ata_id_has_lba48(dev->id); |
1e999736 AC |
1212 | |
1213 | new_sectors--; | |
1214 | ||
1215 | ata_tf_init(dev, &tf); | |
1216 | ||
1e999736 | 1217 | tf.flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; |
c728a914 TH |
1218 | |
1219 | if (lba48) { | |
1220 | tf.command = ATA_CMD_SET_MAX_EXT; | |
1221 | tf.flags |= ATA_TFLAG_LBA48; | |
1222 | ||
1223 | tf.hob_lbal = (new_sectors >> 24) & 0xff; | |
1224 | tf.hob_lbam = (new_sectors >> 32) & 0xff; | |
1225 | tf.hob_lbah = (new_sectors >> 40) & 0xff; | |
1e582ba4 | 1226 | } else { |
c728a914 TH |
1227 | tf.command = ATA_CMD_SET_MAX; |
1228 | ||
1e582ba4 TH |
1229 | tf.device |= (new_sectors >> 24) & 0xf; |
1230 | } | |
1231 | ||
bd18bc04 | 1232 | tf.protocol = ATA_PROT_NODATA; |
c728a914 | 1233 | tf.device |= ATA_LBA; |
1e999736 AC |
1234 | |
1235 | tf.lbal = (new_sectors >> 0) & 0xff; | |
1236 | tf.lbam = (new_sectors >> 8) & 0xff; | |
1237 | tf.lbah = (new_sectors >> 16) & 0xff; | |
1e999736 | 1238 | |
2b789108 | 1239 | err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0); |
c728a914 | 1240 | if (err_mask) { |
a9a79dfe JP |
1241 | ata_dev_warn(dev, |
1242 | "failed to set max address (err_mask=0x%x)\n", | |
1243 | err_mask); | |
c728a914 | 1244 | if (err_mask == AC_ERR_DEV && |
efcef265 | 1245 | (tf.error & (ATA_ABORTED | ATA_IDNF))) |
c728a914 TH |
1246 | return -EACCES; |
1247 | return -EIO; | |
1248 | } | |
1249 | ||
c728a914 | 1250 | return 0; |
1e999736 AC |
1251 | } |
1252 | ||
1253 | /** | |
1254 | * ata_hpa_resize - Resize a device with an HPA set | |
1255 | * @dev: Device to resize | |
1256 | * | |
1257 | * Read the size of an LBA28 or LBA48 disk with HPA features and resize | |
1258 | * it if required to the full size of the media. The caller must check | |
1259 | * the drive has the HPA feature set enabled. | |
05027adc TH |
1260 | * |
1261 | * RETURNS: | |
1262 | * 0 on success, -errno on failure. | |
1e999736 | 1263 | */ |
05027adc | 1264 | static int ata_hpa_resize(struct ata_device *dev) |
1e999736 | 1265 | { |
891fd7c6 | 1266 | bool print_info = ata_dev_print_info(dev); |
445d211b | 1267 | bool unlock_hpa = ata_ignore_hpa || dev->flags & ATA_DFLAG_UNLOCK_HPA; |
05027adc TH |
1268 | u64 sectors = ata_id_n_sectors(dev->id); |
1269 | u64 native_sectors; | |
c728a914 | 1270 | int rc; |
a617c09f | 1271 | |
05027adc | 1272 | /* do we need to do it? */ |
9162c657 | 1273 | if ((dev->class != ATA_DEV_ATA && dev->class != ATA_DEV_ZAC) || |
05027adc TH |
1274 | !ata_id_has_lba(dev->id) || !ata_id_hpa_enabled(dev->id) || |
1275 | (dev->horkage & ATA_HORKAGE_BROKEN_HPA)) | |
c728a914 | 1276 | return 0; |
1e999736 | 1277 | |
05027adc TH |
1278 | /* read native max address */ |
1279 | rc = ata_read_native_max_address(dev, &native_sectors); | |
1280 | if (rc) { | |
dda7aba1 TH |
1281 | /* If device aborted the command or HPA isn't going to |
1282 | * be unlocked, skip HPA resizing. | |
05027adc | 1283 | */ |
445d211b | 1284 | if (rc == -EACCES || !unlock_hpa) { |
a9a79dfe JP |
1285 | ata_dev_warn(dev, |
1286 | "HPA support seems broken, skipping HPA handling\n"); | |
05027adc TH |
1287 | dev->horkage |= ATA_HORKAGE_BROKEN_HPA; |
1288 | ||
1289 | /* we can continue if device aborted the command */ | |
1290 | if (rc == -EACCES) | |
1291 | rc = 0; | |
1e999736 | 1292 | } |
37301a55 | 1293 | |
05027adc TH |
1294 | return rc; |
1295 | } | |
5920dadf | 1296 | dev->n_native_sectors = native_sectors; |
05027adc TH |
1297 | |
1298 | /* nothing to do? */ | |
445d211b | 1299 | if (native_sectors <= sectors || !unlock_hpa) { |
05027adc TH |
1300 | if (!print_info || native_sectors == sectors) |
1301 | return 0; | |
1302 | ||
1303 | if (native_sectors > sectors) | |
a9a79dfe | 1304 | ata_dev_info(dev, |
05027adc TH |
1305 | "HPA detected: current %llu, native %llu\n", |
1306 | (unsigned long long)sectors, | |
1307 | (unsigned long long)native_sectors); | |
1308 | else if (native_sectors < sectors) | |
a9a79dfe JP |
1309 | ata_dev_warn(dev, |
1310 | "native sectors (%llu) is smaller than sectors (%llu)\n", | |
05027adc TH |
1311 | (unsigned long long)native_sectors, |
1312 | (unsigned long long)sectors); | |
1313 | return 0; | |
1314 | } | |
1315 | ||
1316 | /* let's unlock HPA */ | |
1317 | rc = ata_set_max_sectors(dev, native_sectors); | |
1318 | if (rc == -EACCES) { | |
1319 | /* if device aborted the command, skip HPA resizing */ | |
a9a79dfe JP |
1320 | ata_dev_warn(dev, |
1321 | "device aborted resize (%llu -> %llu), skipping HPA handling\n", | |
1322 | (unsigned long long)sectors, | |
1323 | (unsigned long long)native_sectors); | |
05027adc TH |
1324 | dev->horkage |= ATA_HORKAGE_BROKEN_HPA; |
1325 | return 0; | |
1326 | } else if (rc) | |
1327 | return rc; | |
1328 | ||
1329 | /* re-read IDENTIFY data */ | |
1330 | rc = ata_dev_reread_id(dev, 0); | |
1331 | if (rc) { | |
a9a79dfe JP |
1332 | ata_dev_err(dev, |
1333 | "failed to re-read IDENTIFY data after HPA resizing\n"); | |
05027adc TH |
1334 | return rc; |
1335 | } | |
1336 | ||
1337 | if (print_info) { | |
1338 | u64 new_sectors = ata_id_n_sectors(dev->id); | |
a9a79dfe | 1339 | ata_dev_info(dev, |
05027adc TH |
1340 | "HPA unlocked: %llu -> %llu, native %llu\n", |
1341 | (unsigned long long)sectors, | |
1342 | (unsigned long long)new_sectors, | |
1343 | (unsigned long long)native_sectors); | |
1344 | } | |
1345 | ||
1346 | return 0; | |
1e999736 AC |
1347 | } |
1348 | ||
1da177e4 LT |
1349 | /** |
1350 | * ata_dump_id - IDENTIFY DEVICE info debugging output | |
6044f3c4 | 1351 | * @dev: device from which the information is fetched |
0bd3300a | 1352 | * @id: IDENTIFY DEVICE page to dump |
1da177e4 | 1353 | * |
0bd3300a TH |
1354 | * Dump selected 16-bit words from the given IDENTIFY DEVICE |
1355 | * page. | |
1da177e4 LT |
1356 | * |
1357 | * LOCKING: | |
1358 | * caller. | |
1359 | */ | |
1360 | ||
6044f3c4 | 1361 | static inline void ata_dump_id(struct ata_device *dev, const u16 *id) |
1da177e4 | 1362 | { |
6044f3c4 HR |
1363 | ata_dev_dbg(dev, |
1364 | "49==0x%04x 53==0x%04x 63==0x%04x 64==0x%04x 75==0x%04x\n" | |
1365 | "80==0x%04x 81==0x%04x 82==0x%04x 83==0x%04x 84==0x%04x\n" | |
1366 | "88==0x%04x 93==0x%04x\n", | |
1367 | id[49], id[53], id[63], id[64], id[75], id[80], | |
1368 | id[81], id[82], id[83], id[84], id[88], id[93]); | |
1da177e4 LT |
1369 | } |
1370 | ||
cb95d562 TH |
1371 | /** |
1372 | * ata_id_xfermask - Compute xfermask from the given IDENTIFY data | |
1373 | * @id: IDENTIFY data to compute xfer mask from | |
1374 | * | |
1375 | * Compute the xfermask for this device. This is not as trivial | |
1376 | * as it seems if we must consider early devices correctly. | |
1377 | * | |
1378 | * FIXME: pre IDE drive timing (do we care ?). | |
1379 | * | |
1380 | * LOCKING: | |
1381 | * None. | |
1382 | * | |
1383 | * RETURNS: | |
1384 | * Computed xfermask | |
1385 | */ | |
f0a6d77b | 1386 | unsigned int ata_id_xfermask(const u16 *id) |
cb95d562 | 1387 | { |
f0a6d77b | 1388 | unsigned int pio_mask, mwdma_mask, udma_mask; |
cb95d562 TH |
1389 | |
1390 | /* Usual case. Word 53 indicates word 64 is valid */ | |
1391 | if (id[ATA_ID_FIELD_VALID] & (1 << 1)) { | |
1392 | pio_mask = id[ATA_ID_PIO_MODES] & 0x03; | |
1393 | pio_mask <<= 3; | |
1394 | pio_mask |= 0x7; | |
1395 | } else { | |
1396 | /* If word 64 isn't valid then Word 51 high byte holds | |
1397 | * the PIO timing number for the maximum. Turn it into | |
1398 | * a mask. | |
1399 | */ | |
7a0f1c8a | 1400 | u8 mode = (id[ATA_ID_OLD_PIO_MODES] >> 8) & 0xFF; |
46767aeb | 1401 | if (mode < 5) /* Valid PIO range */ |
2dcb407e | 1402 | pio_mask = (2 << mode) - 1; |
46767aeb AC |
1403 | else |
1404 | pio_mask = 1; | |
cb95d562 TH |
1405 | |
1406 | /* But wait.. there's more. Design your standards by | |
1407 | * committee and you too can get a free iordy field to | |
e0af10ac | 1408 | * process. However it is the speeds not the modes that |
cb95d562 TH |
1409 | * are supported... Note drivers using the timing API |
1410 | * will get this right anyway | |
1411 | */ | |
1412 | } | |
1413 | ||
1414 | mwdma_mask = id[ATA_ID_MWDMA_MODES] & 0x07; | |
fb21f0d0 | 1415 | |
b352e57d AC |
1416 | if (ata_id_is_cfa(id)) { |
1417 | /* | |
1418 | * Process compact flash extended modes | |
1419 | */ | |
62afe5d7 SS |
1420 | int pio = (id[ATA_ID_CFA_MODES] >> 0) & 0x7; |
1421 | int dma = (id[ATA_ID_CFA_MODES] >> 3) & 0x7; | |
b352e57d AC |
1422 | |
1423 | if (pio) | |
1424 | pio_mask |= (1 << 5); | |
1425 | if (pio > 1) | |
1426 | pio_mask |= (1 << 6); | |
1427 | if (dma) | |
1428 | mwdma_mask |= (1 << 3); | |
1429 | if (dma > 1) | |
1430 | mwdma_mask |= (1 << 4); | |
1431 | } | |
1432 | ||
fb21f0d0 TH |
1433 | udma_mask = 0; |
1434 | if (id[ATA_ID_FIELD_VALID] & (1 << 2)) | |
1435 | udma_mask = id[ATA_ID_UDMA_MODES] & 0xff; | |
cb95d562 TH |
1436 | |
1437 | return ata_pack_xfermask(pio_mask, mwdma_mask, udma_mask); | |
1438 | } | |
a52fbcfc | 1439 | EXPORT_SYMBOL_GPL(ata_id_xfermask); |
cb95d562 | 1440 | |
7102d230 | 1441 | static void ata_qc_complete_internal(struct ata_queued_cmd *qc) |
a2a7a662 | 1442 | { |
77853bf2 | 1443 | struct completion *waiting = qc->private_data; |
a2a7a662 | 1444 | |
a2a7a662 | 1445 | complete(waiting); |
a2a7a662 TH |
1446 | } |
1447 | ||
1448 | /** | |
2432697b | 1449 | * ata_exec_internal_sg - execute libata internal command |
a2a7a662 TH |
1450 | * @dev: Device to which the command is sent |
1451 | * @tf: Taskfile registers for the command and the result | |
d69cf37d | 1452 | * @cdb: CDB for packet command |
e227867f | 1453 | * @dma_dir: Data transfer direction of the command |
5c1ad8b3 | 1454 | * @sgl: sg list for the data buffer of the command |
2432697b | 1455 | * @n_elem: Number of sg entries |
2b789108 | 1456 | * @timeout: Timeout in msecs (0 for default) |
a2a7a662 TH |
1457 | * |
1458 | * Executes libata internal command with timeout. @tf contains | |
1459 | * command on entry and result on return. Timeout and error | |
1460 | * conditions are reported via return value. No recovery action | |
1461 | * is taken after a command times out. It's caller's duty to | |
1462 | * clean up after timeout. | |
1463 | * | |
1464 | * LOCKING: | |
1465 | * None. Should be called with kernel context, might sleep. | |
551e8889 TH |
1466 | * |
1467 | * RETURNS: | |
1468 | * Zero on success, AC_ERR_* mask on failure | |
a2a7a662 | 1469 | */ |
4d6119f0 SS |
1470 | static unsigned ata_exec_internal_sg(struct ata_device *dev, |
1471 | struct ata_taskfile *tf, const u8 *cdb, | |
1472 | int dma_dir, struct scatterlist *sgl, | |
61176eed | 1473 | unsigned int n_elem, unsigned int timeout) |
a2a7a662 | 1474 | { |
9af5c9c9 TH |
1475 | struct ata_link *link = dev->link; |
1476 | struct ata_port *ap = link->ap; | |
a2a7a662 | 1477 | u8 command = tf->command; |
87fbc5a0 | 1478 | int auto_timeout = 0; |
a2a7a662 | 1479 | struct ata_queued_cmd *qc; |
28361c40 | 1480 | unsigned int preempted_tag; |
e3ed8939 JA |
1481 | u32 preempted_sactive; |
1482 | u64 preempted_qc_active; | |
da917d69 | 1483 | int preempted_nr_active_links; |
60be6b9a | 1484 | DECLARE_COMPLETION_ONSTACK(wait); |
a2a7a662 | 1485 | unsigned long flags; |
77853bf2 | 1486 | unsigned int err_mask; |
d95a717f | 1487 | int rc; |
a2a7a662 | 1488 | |
ba6a1308 | 1489 | spin_lock_irqsave(ap->lock, flags); |
a2a7a662 | 1490 | |
e3180499 | 1491 | /* no internal command while frozen */ |
b51e9e5d | 1492 | if (ap->pflags & ATA_PFLAG_FROZEN) { |
ba6a1308 | 1493 | spin_unlock_irqrestore(ap->lock, flags); |
e3180499 TH |
1494 | return AC_ERR_SYSTEM; |
1495 | } | |
1496 | ||
2ab7db1f | 1497 | /* initialize internal qc */ |
28361c40 | 1498 | qc = __ata_qc_from_tag(ap, ATA_TAG_INTERNAL); |
a2a7a662 | 1499 | |
28361c40 JA |
1500 | qc->tag = ATA_TAG_INTERNAL; |
1501 | qc->hw_tag = 0; | |
2ab7db1f TH |
1502 | qc->scsicmd = NULL; |
1503 | qc->ap = ap; | |
1504 | qc->dev = dev; | |
1505 | ata_qc_reinit(qc); | |
1506 | ||
9af5c9c9 TH |
1507 | preempted_tag = link->active_tag; |
1508 | preempted_sactive = link->sactive; | |
dedaf2b0 | 1509 | preempted_qc_active = ap->qc_active; |
da917d69 | 1510 | preempted_nr_active_links = ap->nr_active_links; |
9af5c9c9 TH |
1511 | link->active_tag = ATA_TAG_POISON; |
1512 | link->sactive = 0; | |
dedaf2b0 | 1513 | ap->qc_active = 0; |
da917d69 | 1514 | ap->nr_active_links = 0; |
2ab7db1f TH |
1515 | |
1516 | /* prepare & issue qc */ | |
a2a7a662 | 1517 | qc->tf = *tf; |
d69cf37d TH |
1518 | if (cdb) |
1519 | memcpy(qc->cdb, cdb, ATAPI_CDB_LEN); | |
e771451c VP |
1520 | |
1521 | /* some SATA bridges need us to indicate data xfer direction */ | |
1522 | if (tf->protocol == ATAPI_PROT_DMA && (dev->flags & ATA_DFLAG_DMADIR) && | |
1523 | dma_dir == DMA_FROM_DEVICE) | |
1524 | qc->tf.feature |= ATAPI_DMADIR; | |
1525 | ||
e61e0672 | 1526 | qc->flags |= ATA_QCFLAG_RESULT_TF; |
a2a7a662 TH |
1527 | qc->dma_dir = dma_dir; |
1528 | if (dma_dir != DMA_NONE) { | |
2432697b | 1529 | unsigned int i, buflen = 0; |
87260216 | 1530 | struct scatterlist *sg; |
2432697b | 1531 | |
87260216 JA |
1532 | for_each_sg(sgl, sg, n_elem, i) |
1533 | buflen += sg->length; | |
2432697b | 1534 | |
87260216 | 1535 | ata_sg_init(qc, sgl, n_elem); |
49c80429 | 1536 | qc->nbytes = buflen; |
a2a7a662 TH |
1537 | } |
1538 | ||
77853bf2 | 1539 | qc->private_data = &wait; |
a2a7a662 TH |
1540 | qc->complete_fn = ata_qc_complete_internal; |
1541 | ||
8e0e694a | 1542 | ata_qc_issue(qc); |
a2a7a662 | 1543 | |
ba6a1308 | 1544 | spin_unlock_irqrestore(ap->lock, flags); |
a2a7a662 | 1545 | |
87fbc5a0 TH |
1546 | if (!timeout) { |
1547 | if (ata_probe_timeout) | |
1548 | timeout = ata_probe_timeout * 1000; | |
1549 | else { | |
1550 | timeout = ata_internal_cmd_timeout(dev, command); | |
1551 | auto_timeout = 1; | |
1552 | } | |
1553 | } | |
2b789108 | 1554 | |
c0c362b6 TH |
1555 | if (ap->ops->error_handler) |
1556 | ata_eh_release(ap); | |
1557 | ||
2b789108 | 1558 | rc = wait_for_completion_timeout(&wait, msecs_to_jiffies(timeout)); |
d95a717f | 1559 | |
c0c362b6 TH |
1560 | if (ap->ops->error_handler) |
1561 | ata_eh_acquire(ap); | |
1562 | ||
c429137a | 1563 | ata_sff_flush_pio_task(ap); |
41ade50c | 1564 | |
d95a717f | 1565 | if (!rc) { |
ba6a1308 | 1566 | spin_lock_irqsave(ap->lock, flags); |
a2a7a662 TH |
1567 | |
1568 | /* We're racing with irq here. If we lose, the | |
1569 | * following test prevents us from completing the qc | |
d95a717f TH |
1570 | * twice. If we win, the port is frozen and will be |
1571 | * cleaned up by ->post_internal_cmd(). | |
a2a7a662 | 1572 | */ |
77853bf2 | 1573 | if (qc->flags & ATA_QCFLAG_ACTIVE) { |
d95a717f TH |
1574 | qc->err_mask |= AC_ERR_TIMEOUT; |
1575 | ||
1576 | if (ap->ops->error_handler) | |
1577 | ata_port_freeze(ap); | |
1578 | else | |
1579 | ata_qc_complete(qc); | |
f15a1daf | 1580 | |
16d42467 HR |
1581 | ata_dev_warn(dev, "qc timeout (cmd 0x%x)\n", |
1582 | command); | |
a2a7a662 TH |
1583 | } |
1584 | ||
ba6a1308 | 1585 | spin_unlock_irqrestore(ap->lock, flags); |
a2a7a662 TH |
1586 | } |
1587 | ||
d95a717f TH |
1588 | /* do post_internal_cmd */ |
1589 | if (ap->ops->post_internal_cmd) | |
1590 | ap->ops->post_internal_cmd(qc); | |
1591 | ||
a51d644a TH |
1592 | /* perform minimal error analysis */ |
1593 | if (qc->flags & ATA_QCFLAG_FAILED) { | |
efcef265 | 1594 | if (qc->result_tf.status & (ATA_ERR | ATA_DF)) |
a51d644a TH |
1595 | qc->err_mask |= AC_ERR_DEV; |
1596 | ||
1597 | if (!qc->err_mask) | |
1598 | qc->err_mask |= AC_ERR_OTHER; | |
1599 | ||
1600 | if (qc->err_mask & ~AC_ERR_OTHER) | |
1601 | qc->err_mask &= ~AC_ERR_OTHER; | |
2dae9955 | 1602 | } else if (qc->tf.command == ATA_CMD_REQ_SENSE_DATA) { |
efcef265 | 1603 | qc->result_tf.status |= ATA_SENSE; |
d95a717f TH |
1604 | } |
1605 | ||
15869303 | 1606 | /* finish up */ |
ba6a1308 | 1607 | spin_lock_irqsave(ap->lock, flags); |
15869303 | 1608 | |
e61e0672 | 1609 | *tf = qc->result_tf; |
77853bf2 TH |
1610 | err_mask = qc->err_mask; |
1611 | ||
1612 | ata_qc_free(qc); | |
9af5c9c9 TH |
1613 | link->active_tag = preempted_tag; |
1614 | link->sactive = preempted_sactive; | |
dedaf2b0 | 1615 | ap->qc_active = preempted_qc_active; |
da917d69 | 1616 | ap->nr_active_links = preempted_nr_active_links; |
77853bf2 | 1617 | |
ba6a1308 | 1618 | spin_unlock_irqrestore(ap->lock, flags); |
15869303 | 1619 | |
87fbc5a0 TH |
1620 | if ((err_mask & AC_ERR_TIMEOUT) && auto_timeout) |
1621 | ata_internal_cmd_timed_out(dev, command); | |
1622 | ||
77853bf2 | 1623 | return err_mask; |
a2a7a662 TH |
1624 | } |
1625 | ||
2432697b | 1626 | /** |
33480a0e | 1627 | * ata_exec_internal - execute libata internal command |
2432697b TH |
1628 | * @dev: Device to which the command is sent |
1629 | * @tf: Taskfile registers for the command and the result | |
1630 | * @cdb: CDB for packet command | |
e227867f | 1631 | * @dma_dir: Data transfer direction of the command |
2432697b TH |
1632 | * @buf: Data buffer of the command |
1633 | * @buflen: Length of data buffer | |
2b789108 | 1634 | * @timeout: Timeout in msecs (0 for default) |
2432697b TH |
1635 | * |
1636 | * Wrapper around ata_exec_internal_sg() which takes simple | |
1637 | * buffer instead of sg list. | |
1638 | * | |
1639 | * LOCKING: | |
1640 | * None. Should be called with kernel context, might sleep. | |
1641 | * | |
1642 | * RETURNS: | |
1643 | * Zero on success, AC_ERR_* mask on failure | |
1644 | */ | |
1645 | unsigned ata_exec_internal(struct ata_device *dev, | |
1646 | struct ata_taskfile *tf, const u8 *cdb, | |
2b789108 | 1647 | int dma_dir, void *buf, unsigned int buflen, |
61176eed | 1648 | unsigned int timeout) |
2432697b | 1649 | { |
33480a0e TH |
1650 | struct scatterlist *psg = NULL, sg; |
1651 | unsigned int n_elem = 0; | |
2432697b | 1652 | |
33480a0e TH |
1653 | if (dma_dir != DMA_NONE) { |
1654 | WARN_ON(!buf); | |
1655 | sg_init_one(&sg, buf, buflen); | |
1656 | psg = &sg; | |
1657 | n_elem++; | |
1658 | } | |
2432697b | 1659 | |
2b789108 TH |
1660 | return ata_exec_internal_sg(dev, tf, cdb, dma_dir, psg, n_elem, |
1661 | timeout); | |
2432697b TH |
1662 | } |
1663 | ||
1bc4ccff AC |
1664 | /** |
1665 | * ata_pio_need_iordy - check if iordy needed | |
1666 | * @adev: ATA device | |
1667 | * | |
1668 | * Check if the current speed of the device requires IORDY. Used | |
1669 | * by various controllers for chip configuration. | |
1670 | */ | |
1bc4ccff AC |
1671 | unsigned int ata_pio_need_iordy(const struct ata_device *adev) |
1672 | { | |
0d9e6659 TH |
1673 | /* Don't set IORDY if we're preparing for reset. IORDY may |
1674 | * lead to controller lock up on certain controllers if the | |
1675 | * port is not occupied. See bko#11703 for details. | |
1676 | */ | |
1677 | if (adev->link->ap->pflags & ATA_PFLAG_RESETTING) | |
1678 | return 0; | |
1679 | /* Controller doesn't support IORDY. Probably a pointless | |
1680 | * check as the caller should know this. | |
1681 | */ | |
9af5c9c9 | 1682 | if (adev->link->ap->flags & ATA_FLAG_NO_IORDY) |
1bc4ccff | 1683 | return 0; |
5c18c4d2 DD |
1684 | /* CF spec. r4.1 Table 22 says no iordy on PIO5 and PIO6. */ |
1685 | if (ata_id_is_cfa(adev->id) | |
1686 | && (adev->pio_mode == XFER_PIO_5 || adev->pio_mode == XFER_PIO_6)) | |
1687 | return 0; | |
432729f0 AC |
1688 | /* PIO3 and higher it is mandatory */ |
1689 | if (adev->pio_mode > XFER_PIO_2) | |
1690 | return 1; | |
1691 | /* We turn it on when possible */ | |
1692 | if (ata_id_has_iordy(adev->id)) | |
1bc4ccff | 1693 | return 1; |
432729f0 AC |
1694 | return 0; |
1695 | } | |
a52fbcfc | 1696 | EXPORT_SYMBOL_GPL(ata_pio_need_iordy); |
2e9edbf8 | 1697 | |
432729f0 AC |
1698 | /** |
1699 | * ata_pio_mask_no_iordy - Return the non IORDY mask | |
1700 | * @adev: ATA device | |
1701 | * | |
1702 | * Compute the highest mode possible if we are not using iordy. Return | |
1703 | * -1 if no iordy mode is available. | |
1704 | */ | |
432729f0 AC |
1705 | static u32 ata_pio_mask_no_iordy(const struct ata_device *adev) |
1706 | { | |
1bc4ccff | 1707 | /* If we have no drive specific rule, then PIO 2 is non IORDY */ |
1bc4ccff | 1708 | if (adev->id[ATA_ID_FIELD_VALID] & 2) { /* EIDE */ |
432729f0 | 1709 | u16 pio = adev->id[ATA_ID_EIDE_PIO]; |
1bc4ccff AC |
1710 | /* Is the speed faster than the drive allows non IORDY ? */ |
1711 | if (pio) { | |
1712 | /* This is cycle times not frequency - watch the logic! */ | |
1713 | if (pio > 240) /* PIO2 is 240nS per cycle */ | |
432729f0 AC |
1714 | return 3 << ATA_SHIFT_PIO; |
1715 | return 7 << ATA_SHIFT_PIO; | |
1bc4ccff AC |
1716 | } |
1717 | } | |
432729f0 | 1718 | return 3 << ATA_SHIFT_PIO; |
1bc4ccff AC |
1719 | } |
1720 | ||
963e4975 AC |
1721 | /** |
1722 | * ata_do_dev_read_id - default ID read method | |
1723 | * @dev: device | |
1724 | * @tf: proposed taskfile | |
1725 | * @id: data buffer | |
1726 | * | |
1727 | * Issue the identify taskfile and hand back the buffer containing | |
1728 | * identify data. For some RAID controllers and for pre ATA devices | |
1729 | * this function is wrapped or replaced by the driver | |
1730 | */ | |
1731 | unsigned int ata_do_dev_read_id(struct ata_device *dev, | |
0561e514 | 1732 | struct ata_taskfile *tf, __le16 *id) |
963e4975 AC |
1733 | { |
1734 | return ata_exec_internal(dev, tf, NULL, DMA_FROM_DEVICE, | |
1735 | id, sizeof(id[0]) * ATA_ID_WORDS, 0); | |
1736 | } | |
a52fbcfc | 1737 | EXPORT_SYMBOL_GPL(ata_do_dev_read_id); |
963e4975 | 1738 | |
1da177e4 | 1739 | /** |
49016aca | 1740 | * ata_dev_read_id - Read ID data from the specified device |
49016aca TH |
1741 | * @dev: target device |
1742 | * @p_class: pointer to class of the target device (may be changed) | |
bff04647 | 1743 | * @flags: ATA_READID_* flags |
fe635c7e | 1744 | * @id: buffer to read IDENTIFY data into |
1da177e4 | 1745 | * |
49016aca TH |
1746 | * Read ID data from the specified device. ATA_CMD_ID_ATA is |
1747 | * performed on ATA devices and ATA_CMD_ID_ATAPI on ATAPI | |
aec5c3c1 TH |
1748 | * devices. This function also issues ATA_CMD_INIT_DEV_PARAMS |
1749 | * for pre-ATA4 drives. | |
1da177e4 | 1750 | * |
50a99018 | 1751 | * FIXME: ATA_CMD_ID_ATA is optional for early drives and right |
2dcb407e | 1752 | * now we abort if we hit that case. |
50a99018 | 1753 | * |
1da177e4 | 1754 | * LOCKING: |
49016aca TH |
1755 | * Kernel thread context (may sleep) |
1756 | * | |
1757 | * RETURNS: | |
1758 | * 0 on success, -errno otherwise. | |
1da177e4 | 1759 | */ |
a9beec95 | 1760 | int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class, |
bff04647 | 1761 | unsigned int flags, u16 *id) |
1da177e4 | 1762 | { |
9af5c9c9 | 1763 | struct ata_port *ap = dev->link->ap; |
49016aca | 1764 | unsigned int class = *p_class; |
a0123703 | 1765 | struct ata_taskfile tf; |
49016aca TH |
1766 | unsigned int err_mask = 0; |
1767 | const char *reason; | |
79b42bab | 1768 | bool is_semb = class == ATA_DEV_SEMB; |
54936f8b | 1769 | int may_fallback = 1, tried_spinup = 0; |
49016aca | 1770 | int rc; |
1da177e4 | 1771 | |
963e4975 | 1772 | retry: |
3373efd8 | 1773 | ata_tf_init(dev, &tf); |
a0123703 | 1774 | |
49016aca | 1775 | switch (class) { |
79b42bab TH |
1776 | case ATA_DEV_SEMB: |
1777 | class = ATA_DEV_ATA; /* some hard drives report SEMB sig */ | |
df561f66 | 1778 | fallthrough; |
49016aca | 1779 | case ATA_DEV_ATA: |
9162c657 | 1780 | case ATA_DEV_ZAC: |
a0123703 | 1781 | tf.command = ATA_CMD_ID_ATA; |
49016aca TH |
1782 | break; |
1783 | case ATA_DEV_ATAPI: | |
a0123703 | 1784 | tf.command = ATA_CMD_ID_ATAPI; |
49016aca TH |
1785 | break; |
1786 | default: | |
1787 | rc = -ENODEV; | |
1788 | reason = "unsupported class"; | |
1789 | goto err_out; | |
1da177e4 LT |
1790 | } |
1791 | ||
a0123703 | 1792 | tf.protocol = ATA_PROT_PIO; |
81afe893 TH |
1793 | |
1794 | /* Some devices choke if TF registers contain garbage. Make | |
1795 | * sure those are properly initialized. | |
1796 | */ | |
1797 | tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
1798 | ||
1799 | /* Device presence detection is unreliable on some | |
1800 | * controllers. Always poll IDENTIFY if available. | |
1801 | */ | |
1802 | tf.flags |= ATA_TFLAG_POLLING; | |
1da177e4 | 1803 | |
963e4975 | 1804 | if (ap->ops->read_id) |
0561e514 | 1805 | err_mask = ap->ops->read_id(dev, &tf, (__le16 *)id); |
963e4975 | 1806 | else |
0561e514 | 1807 | err_mask = ata_do_dev_read_id(dev, &tf, (__le16 *)id); |
963e4975 | 1808 | |
a0123703 | 1809 | if (err_mask) { |
800b3996 | 1810 | if (err_mask & AC_ERR_NODEV_HINT) { |
a9a79dfe | 1811 | ata_dev_dbg(dev, "NODEV after polling detection\n"); |
55a8e2c8 TH |
1812 | return -ENOENT; |
1813 | } | |
1814 | ||
79b42bab | 1815 | if (is_semb) { |
a9a79dfe JP |
1816 | ata_dev_info(dev, |
1817 | "IDENTIFY failed on device w/ SEMB sig, disabled\n"); | |
79b42bab TH |
1818 | /* SEMB is not supported yet */ |
1819 | *p_class = ATA_DEV_SEMB_UNSUP; | |
1820 | return 0; | |
1821 | } | |
1822 | ||
efcef265 | 1823 | if ((err_mask == AC_ERR_DEV) && (tf.error & ATA_ABORTED)) { |
1ffc151f TH |
1824 | /* Device or controller might have reported |
1825 | * the wrong device class. Give a shot at the | |
1826 | * other IDENTIFY if the current one is | |
1827 | * aborted by the device. | |
1828 | */ | |
1829 | if (may_fallback) { | |
1830 | may_fallback = 0; | |
1831 | ||
1832 | if (class == ATA_DEV_ATA) | |
1833 | class = ATA_DEV_ATAPI; | |
1834 | else | |
1835 | class = ATA_DEV_ATA; | |
1836 | goto retry; | |
1837 | } | |
1838 | ||
1839 | /* Control reaches here iff the device aborted | |
1840 | * both flavors of IDENTIFYs which happens | |
1841 | * sometimes with phantom devices. | |
1842 | */ | |
a9a79dfe JP |
1843 | ata_dev_dbg(dev, |
1844 | "both IDENTIFYs aborted, assuming NODEV\n"); | |
1ffc151f | 1845 | return -ENOENT; |
54936f8b TH |
1846 | } |
1847 | ||
49016aca TH |
1848 | rc = -EIO; |
1849 | reason = "I/O error"; | |
1da177e4 LT |
1850 | goto err_out; |
1851 | } | |
1852 | ||
43c9c591 | 1853 | if (dev->horkage & ATA_HORKAGE_DUMP_ID) { |
4baa5745 | 1854 | ata_dev_info(dev, "dumping IDENTIFY data, " |
a9a79dfe JP |
1855 | "class=%d may_fallback=%d tried_spinup=%d\n", |
1856 | class, may_fallback, tried_spinup); | |
4baa5745 | 1857 | print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, |
43c9c591 TH |
1858 | 16, 2, id, ATA_ID_WORDS * sizeof(*id), true); |
1859 | } | |
1860 | ||
54936f8b TH |
1861 | /* Falling back doesn't make sense if ID data was read |
1862 | * successfully at least once. | |
1863 | */ | |
1864 | may_fallback = 0; | |
1865 | ||
49016aca | 1866 | swap_buf_le16(id, ATA_ID_WORDS); |
1da177e4 | 1867 | |
49016aca | 1868 | /* sanity check */ |
a4f5749b | 1869 | rc = -EINVAL; |
6070068b | 1870 | reason = "device reports invalid type"; |
a4f5749b | 1871 | |
9162c657 | 1872 | if (class == ATA_DEV_ATA || class == ATA_DEV_ZAC) { |
a4f5749b TH |
1873 | if (!ata_id_is_ata(id) && !ata_id_is_cfa(id)) |
1874 | goto err_out; | |
db63a4c8 AW |
1875 | if (ap->host->flags & ATA_HOST_IGNORE_ATA && |
1876 | ata_id_is_ata(id)) { | |
1877 | ata_dev_dbg(dev, | |
1878 | "host indicates ignore ATA devices, ignored\n"); | |
1879 | return -ENOENT; | |
1880 | } | |
a4f5749b TH |
1881 | } else { |
1882 | if (ata_id_is_ata(id)) | |
1883 | goto err_out; | |
49016aca TH |
1884 | } |
1885 | ||
169439c2 ML |
1886 | if (!tried_spinup && (id[2] == 0x37c8 || id[2] == 0x738c)) { |
1887 | tried_spinup = 1; | |
1888 | /* | |
1889 | * Drive powered-up in standby mode, and requires a specific | |
1890 | * SET_FEATURES spin-up subcommand before it will accept | |
1891 | * anything other than the original IDENTIFY command. | |
1892 | */ | |
218f3d30 | 1893 | err_mask = ata_dev_set_feature(dev, SETFEATURES_SPINUP, 0); |
fb0582f9 | 1894 | if (err_mask && id[2] != 0x738c) { |
169439c2 ML |
1895 | rc = -EIO; |
1896 | reason = "SPINUP failed"; | |
1897 | goto err_out; | |
1898 | } | |
1899 | /* | |
1900 | * If the drive initially returned incomplete IDENTIFY info, | |
1901 | * we now must reissue the IDENTIFY command. | |
1902 | */ | |
1903 | if (id[2] == 0x37c8) | |
1904 | goto retry; | |
1905 | } | |
1906 | ||
9162c657 HR |
1907 | if ((flags & ATA_READID_POSTRESET) && |
1908 | (class == ATA_DEV_ATA || class == ATA_DEV_ZAC)) { | |
49016aca TH |
1909 | /* |
1910 | * The exact sequence expected by certain pre-ATA4 drives is: | |
1911 | * SRST RESET | |
50a99018 AC |
1912 | * IDENTIFY (optional in early ATA) |
1913 | * INITIALIZE DEVICE PARAMETERS (later IDE and ATA) | |
49016aca TH |
1914 | * anything else.. |
1915 | * Some drives were very specific about that exact sequence. | |
50a99018 AC |
1916 | * |
1917 | * Note that ATA4 says lba is mandatory so the second check | |
c9404c9c | 1918 | * should never trigger. |
49016aca TH |
1919 | */ |
1920 | if (ata_id_major_version(id) < 4 || !ata_id_has_lba(id)) { | |
3373efd8 | 1921 | err_mask = ata_dev_init_params(dev, id[3], id[6]); |
49016aca TH |
1922 | if (err_mask) { |
1923 | rc = -EIO; | |
1924 | reason = "INIT_DEV_PARAMS failed"; | |
1925 | goto err_out; | |
1926 | } | |
1927 | ||
1928 | /* current CHS translation info (id[53-58]) might be | |
1929 | * changed. reread the identify device info. | |
1930 | */ | |
bff04647 | 1931 | flags &= ~ATA_READID_POSTRESET; |
49016aca TH |
1932 | goto retry; |
1933 | } | |
1934 | } | |
1935 | ||
1936 | *p_class = class; | |
fe635c7e | 1937 | |
49016aca TH |
1938 | return 0; |
1939 | ||
1940 | err_out: | |
16d42467 HR |
1941 | ata_dev_warn(dev, "failed to IDENTIFY (%s, err_mask=0x%x)\n", |
1942 | reason, err_mask); | |
49016aca TH |
1943 | return rc; |
1944 | } | |
1945 | ||
f01f62c2 CH |
1946 | /** |
1947 | * ata_read_log_page - read a specific log page | |
1948 | * @dev: target device | |
1949 | * @log: log to read | |
1950 | * @page: page to read | |
1951 | * @buf: buffer to store read page | |
1952 | * @sectors: number of sectors to read | |
1953 | * | |
1954 | * Read log page using READ_LOG_EXT command. | |
1955 | * | |
1956 | * LOCKING: | |
1957 | * Kernel thread context (may sleep). | |
1958 | * | |
1959 | * RETURNS: | |
1960 | * 0 on success, AC_ERR_* mask otherwise. | |
1961 | */ | |
1962 | unsigned int ata_read_log_page(struct ata_device *dev, u8 log, | |
1963 | u8 page, void *buf, unsigned int sectors) | |
1964 | { | |
1965 | unsigned long ap_flags = dev->link->ap->flags; | |
1966 | struct ata_taskfile tf; | |
1967 | unsigned int err_mask; | |
1968 | bool dma = false; | |
1969 | ||
4633778b | 1970 | ata_dev_dbg(dev, "read log page - log 0x%x, page 0x%x\n", log, page); |
f01f62c2 CH |
1971 | |
1972 | /* | |
1973 | * Return error without actually issuing the command on controllers | |
1974 | * which e.g. lockup on a read log page. | |
1975 | */ | |
1976 | if (ap_flags & ATA_FLAG_NO_LOG_PAGE) | |
1977 | return AC_ERR_DEV; | |
1978 | ||
1979 | retry: | |
1980 | ata_tf_init(dev, &tf); | |
f971a854 | 1981 | if (ata_dma_enabled(dev) && ata_id_has_read_log_dma_ext(dev->id) && |
7cfdfdc8 | 1982 | !(dev->horkage & ATA_HORKAGE_NO_DMA_LOG)) { |
f01f62c2 CH |
1983 | tf.command = ATA_CMD_READ_LOG_DMA_EXT; |
1984 | tf.protocol = ATA_PROT_DMA; | |
1985 | dma = true; | |
1986 | } else { | |
1987 | tf.command = ATA_CMD_READ_LOG_EXT; | |
1988 | tf.protocol = ATA_PROT_PIO; | |
1989 | dma = false; | |
1990 | } | |
1991 | tf.lbal = log; | |
1992 | tf.lbam = page; | |
1993 | tf.nsect = sectors; | |
1994 | tf.hob_nsect = sectors >> 8; | |
1995 | tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_LBA48 | ATA_TFLAG_DEVICE; | |
1996 | ||
1997 | err_mask = ata_exec_internal(dev, &tf, NULL, DMA_FROM_DEVICE, | |
1998 | buf, sectors * ATA_SECT_SIZE, 0); | |
1999 | ||
fc5c8aa7 DLM |
2000 | if (err_mask) { |
2001 | if (dma) { | |
2002 | dev->horkage |= ATA_HORKAGE_NO_DMA_LOG; | |
2003 | goto retry; | |
2004 | } | |
23ef63d5 DLM |
2005 | ata_dev_err(dev, |
2006 | "Read log 0x%02x page 0x%02x failed, Emask 0x%x\n", | |
2007 | (unsigned int)log, (unsigned int)page, err_mask); | |
f01f62c2 CH |
2008 | } |
2009 | ||
f01f62c2 CH |
2010 | return err_mask; |
2011 | } | |
2012 | ||
c745dfc5 | 2013 | static int ata_log_supported(struct ata_device *dev, u8 log) |
efe205a3 CH |
2014 | { |
2015 | struct ata_port *ap = dev->link->ap; | |
2016 | ||
ac9f0c81 | 2017 | if (dev->horkage & ATA_HORKAGE_NO_LOG_DIR) |
c745dfc5 | 2018 | return 0; |
ac9f0c81 | 2019 | |
efe205a3 | 2020 | if (ata_read_log_page(dev, ATA_LOG_DIRECTORY, 0, ap->sector_buf, 1)) |
c745dfc5 TE |
2021 | return 0; |
2022 | return get_unaligned_le16(&ap->sector_buf[log * 2]); | |
efe205a3 CH |
2023 | } |
2024 | ||
a0fd2454 CH |
2025 | static bool ata_identify_page_supported(struct ata_device *dev, u8 page) |
2026 | { | |
2027 | struct ata_port *ap = dev->link->ap; | |
2028 | unsigned int err, i; | |
2029 | ||
636f6e2a DLM |
2030 | if (dev->horkage & ATA_HORKAGE_NO_ID_DEV_LOG) |
2031 | return false; | |
2032 | ||
a0fd2454 | 2033 | if (!ata_log_supported(dev, ATA_LOG_IDENTIFY_DEVICE)) { |
636f6e2a DLM |
2034 | /* |
2035 | * IDENTIFY DEVICE data log is defined as mandatory starting | |
2036 | * with ACS-3 (ATA version 10). Warn about the missing log | |
2037 | * for drives which implement this ATA level or above. | |
2038 | */ | |
2039 | if (ata_id_major_version(dev->id) >= 10) | |
2040 | ata_dev_warn(dev, | |
2041 | "ATA Identify Device Log not supported\n"); | |
2042 | dev->horkage |= ATA_HORKAGE_NO_ID_DEV_LOG; | |
a0fd2454 CH |
2043 | return false; |
2044 | } | |
2045 | ||
2046 | /* | |
2047 | * Read IDENTIFY DEVICE data log, page 0, to figure out if the page is | |
2048 | * supported. | |
2049 | */ | |
2050 | err = ata_read_log_page(dev, ATA_LOG_IDENTIFY_DEVICE, 0, ap->sector_buf, | |
2051 | 1); | |
fc5c8aa7 | 2052 | if (err) |
a0fd2454 | 2053 | return false; |
a0fd2454 CH |
2054 | |
2055 | for (i = 0; i < ap->sector_buf[8]; i++) { | |
2056 | if (ap->sector_buf[9 + i] == page) | |
2057 | return true; | |
2058 | } | |
2059 | ||
2060 | return false; | |
2061 | } | |
2062 | ||
9062712f TH |
2063 | static int ata_do_link_spd_horkage(struct ata_device *dev) |
2064 | { | |
2065 | struct ata_link *plink = ata_dev_phys_link(dev); | |
2066 | u32 target, target_limit; | |
2067 | ||
2068 | if (!sata_scr_valid(plink)) | |
2069 | return 0; | |
2070 | ||
2071 | if (dev->horkage & ATA_HORKAGE_1_5_GBPS) | |
2072 | target = 1; | |
2073 | else | |
2074 | return 0; | |
2075 | ||
2076 | target_limit = (1 << target) - 1; | |
2077 | ||
2078 | /* if already on stricter limit, no need to push further */ | |
2079 | if (plink->sata_spd_limit <= target_limit) | |
2080 | return 0; | |
2081 | ||
2082 | plink->sata_spd_limit = target_limit; | |
2083 | ||
2084 | /* Request another EH round by returning -EAGAIN if link is | |
2085 | * going faster than the target speed. Forward progress is | |
2086 | * guaranteed by setting sata_spd_limit to target_limit above. | |
2087 | */ | |
2088 | if (plink->sata_spd > target) { | |
a9a79dfe JP |
2089 | ata_dev_info(dev, "applying link speed limit horkage to %s\n", |
2090 | sata_spd_string(target)); | |
9062712f TH |
2091 | return -EAGAIN; |
2092 | } | |
2093 | return 0; | |
2094 | } | |
2095 | ||
3373efd8 | 2096 | static inline u8 ata_dev_knobble(struct ata_device *dev) |
4b2f3ede | 2097 | { |
9af5c9c9 | 2098 | struct ata_port *ap = dev->link->ap; |
9ce8e307 JA |
2099 | |
2100 | if (ata_dev_blacklisted(dev) & ATA_HORKAGE_BRIDGE_OK) | |
2101 | return 0; | |
2102 | ||
9af5c9c9 | 2103 | return ((ap->cbl == ATA_CBL_SATA) && (!ata_id_is_sata(dev->id))); |
4b2f3ede TH |
2104 | } |
2105 | ||
5a233551 HR |
2106 | static void ata_dev_config_ncq_send_recv(struct ata_device *dev) |
2107 | { | |
2108 | struct ata_port *ap = dev->link->ap; | |
2109 | unsigned int err_mask; | |
2110 | ||
efe205a3 CH |
2111 | if (!ata_log_supported(dev, ATA_LOG_NCQ_SEND_RECV)) { |
2112 | ata_dev_warn(dev, "NCQ Send/Recv Log not supported\n"); | |
fe5af0cc HR |
2113 | return; |
2114 | } | |
5a233551 HR |
2115 | err_mask = ata_read_log_page(dev, ATA_LOG_NCQ_SEND_RECV, |
2116 | 0, ap->sector_buf, 1); | |
fc5c8aa7 | 2117 | if (!err_mask) { |
5a233551 HR |
2118 | u8 *cmds = dev->ncq_send_recv_cmds; |
2119 | ||
2120 | dev->flags |= ATA_DFLAG_NCQ_SEND_RECV; | |
2121 | memcpy(cmds, ap->sector_buf, ATA_LOG_NCQ_SEND_RECV_SIZE); | |
2122 | ||
2123 | if (dev->horkage & ATA_HORKAGE_NO_NCQ_TRIM) { | |
2124 | ata_dev_dbg(dev, "disabling queued TRIM support\n"); | |
2125 | cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] &= | |
2126 | ~ATA_LOG_NCQ_SEND_RECV_DSM_TRIM; | |
2127 | } | |
2128 | } | |
2129 | } | |
2130 | ||
284b3b77 HR |
2131 | static void ata_dev_config_ncq_non_data(struct ata_device *dev) |
2132 | { | |
2133 | struct ata_port *ap = dev->link->ap; | |
2134 | unsigned int err_mask; | |
284b3b77 | 2135 | |
efe205a3 | 2136 | if (!ata_log_supported(dev, ATA_LOG_NCQ_NON_DATA)) { |
284b3b77 HR |
2137 | ata_dev_warn(dev, |
2138 | "NCQ Send/Recv Log not supported\n"); | |
2139 | return; | |
2140 | } | |
2141 | err_mask = ata_read_log_page(dev, ATA_LOG_NCQ_NON_DATA, | |
2142 | 0, ap->sector_buf, 1); | |
fc5c8aa7 | 2143 | if (!err_mask) { |
284b3b77 HR |
2144 | u8 *cmds = dev->ncq_non_data_cmds; |
2145 | ||
2146 | memcpy(cmds, ap->sector_buf, ATA_LOG_NCQ_NON_DATA_SIZE); | |
2147 | } | |
2148 | } | |
2149 | ||
8e061784 AM |
2150 | static void ata_dev_config_ncq_prio(struct ata_device *dev) |
2151 | { | |
2152 | struct ata_port *ap = dev->link->ap; | |
2153 | unsigned int err_mask; | |
2154 | ||
06f6c4c6 DLM |
2155 | if (!ata_identify_page_supported(dev, ATA_LOG_SATA_SETTINGS)) |
2156 | return; | |
2157 | ||
8e061784 | 2158 | err_mask = ata_read_log_page(dev, |
1d51d5f3 | 2159 | ATA_LOG_IDENTIFY_DEVICE, |
8e061784 AM |
2160 | ATA_LOG_SATA_SETTINGS, |
2161 | ap->sector_buf, | |
2162 | 1); | |
fc5c8aa7 | 2163 | if (err_mask) |
2360fa18 | 2164 | goto not_supported; |
8e061784 | 2165 | |
2360fa18 DLM |
2166 | if (!(ap->sector_buf[ATA_LOG_NCQ_PRIO_OFFSET] & BIT(3))) |
2167 | goto not_supported; | |
2168 | ||
2169 | dev->flags |= ATA_DFLAG_NCQ_PRIO; | |
2170 | ||
2171 | return; | |
8e061784 | 2172 | |
2360fa18 DLM |
2173 | not_supported: |
2174 | dev->flags &= ~ATA_DFLAG_NCQ_PRIO_ENABLE; | |
2175 | dev->flags &= ~ATA_DFLAG_NCQ_PRIO; | |
8e061784 AM |
2176 | } |
2177 | ||
7a8526a5 KH |
2178 | static bool ata_dev_check_adapter(struct ata_device *dev, |
2179 | unsigned short vendor_id) | |
2180 | { | |
2181 | struct pci_dev *pcidev = NULL; | |
2182 | struct device *parent_dev = NULL; | |
2183 | ||
2184 | for (parent_dev = dev->tdev.parent; parent_dev != NULL; | |
2185 | parent_dev = parent_dev->parent) { | |
2186 | if (dev_is_pci(parent_dev)) { | |
2187 | pcidev = to_pci_dev(parent_dev); | |
2188 | if (pcidev->vendor == vendor_id) | |
2189 | return true; | |
2190 | break; | |
2191 | } | |
2192 | } | |
2193 | ||
2194 | return false; | |
2195 | } | |
2196 | ||
388539f3 | 2197 | static int ata_dev_config_ncq(struct ata_device *dev, |
a6e6ce8e TH |
2198 | char *desc, size_t desc_sz) |
2199 | { | |
9af5c9c9 | 2200 | struct ata_port *ap = dev->link->ap; |
a6e6ce8e | 2201 | int hdepth = 0, ddepth = ata_id_queue_depth(dev->id); |
388539f3 SL |
2202 | unsigned int err_mask; |
2203 | char *aa_desc = ""; | |
a6e6ce8e TH |
2204 | |
2205 | if (!ata_id_has_ncq(dev->id)) { | |
2206 | desc[0] = '\0'; | |
388539f3 | 2207 | return 0; |
a6e6ce8e | 2208 | } |
cba97ea1 BZ |
2209 | if (!IS_ENABLED(CONFIG_SATA_HOST)) |
2210 | return 0; | |
75683fe7 | 2211 | if (dev->horkage & ATA_HORKAGE_NONCQ) { |
6919a0a6 | 2212 | snprintf(desc, desc_sz, "NCQ (not used)"); |
388539f3 | 2213 | return 0; |
6919a0a6 | 2214 | } |
7a8526a5 KH |
2215 | |
2216 | if (dev->horkage & ATA_HORKAGE_NO_NCQ_ON_ATI && | |
2217 | ata_dev_check_adapter(dev, PCI_VENDOR_ID_ATI)) { | |
2218 | snprintf(desc, desc_sz, "NCQ (not used)"); | |
2219 | return 0; | |
2220 | } | |
2221 | ||
a6e6ce8e | 2222 | if (ap->flags & ATA_FLAG_NCQ) { |
69278f79 | 2223 | hdepth = min(ap->scsi_host->can_queue, ATA_MAX_QUEUE); |
a6e6ce8e TH |
2224 | dev->flags |= ATA_DFLAG_NCQ; |
2225 | } | |
2226 | ||
388539f3 SL |
2227 | if (!(dev->horkage & ATA_HORKAGE_BROKEN_FPDMA_AA) && |
2228 | (ap->flags & ATA_FLAG_FPDMA_AA) && | |
2229 | ata_id_has_fpdma_aa(dev->id)) { | |
2230 | err_mask = ata_dev_set_feature(dev, SETFEATURES_SATA_ENABLE, | |
2231 | SATA_FPDMA_AA); | |
2232 | if (err_mask) { | |
a9a79dfe JP |
2233 | ata_dev_err(dev, |
2234 | "failed to enable AA (error_mask=0x%x)\n", | |
2235 | err_mask); | |
388539f3 SL |
2236 | if (err_mask != AC_ERR_DEV) { |
2237 | dev->horkage |= ATA_HORKAGE_BROKEN_FPDMA_AA; | |
2238 | return -EIO; | |
2239 | } | |
2240 | } else | |
2241 | aa_desc = ", AA"; | |
2242 | } | |
2243 | ||
a6e6ce8e | 2244 | if (hdepth >= ddepth) |
388539f3 | 2245 | snprintf(desc, desc_sz, "NCQ (depth %d)%s", ddepth, aa_desc); |
a6e6ce8e | 2246 | else |
388539f3 SL |
2247 | snprintf(desc, desc_sz, "NCQ (depth %d/%d)%s", hdepth, |
2248 | ddepth, aa_desc); | |
ed36911c | 2249 | |
284b3b77 HR |
2250 | if ((ap->flags & ATA_FLAG_FPDMA_AUX)) { |
2251 | if (ata_id_has_ncq_send_and_recv(dev->id)) | |
2252 | ata_dev_config_ncq_send_recv(dev); | |
2253 | if (ata_id_has_ncq_non_data(dev->id)) | |
2254 | ata_dev_config_ncq_non_data(dev); | |
8e061784 AM |
2255 | if (ata_id_has_ncq_prio(dev->id)) |
2256 | ata_dev_config_ncq_prio(dev); | |
284b3b77 | 2257 | } |
f78dea06 | 2258 | |
388539f3 | 2259 | return 0; |
a6e6ce8e | 2260 | } |
f78dea06 | 2261 | |
e87fd28c HR |
2262 | static void ata_dev_config_sense_reporting(struct ata_device *dev) |
2263 | { | |
2264 | unsigned int err_mask; | |
2265 | ||
2266 | if (!ata_id_has_sense_reporting(dev->id)) | |
2267 | return; | |
2268 | ||
2269 | if (ata_id_sense_reporting_enabled(dev->id)) | |
2270 | return; | |
2271 | ||
2272 | err_mask = ata_dev_set_feature(dev, SETFEATURE_SENSE_DATA, 0x1); | |
2273 | if (err_mask) { | |
2274 | ata_dev_dbg(dev, | |
2275 | "failed to enable Sense Data Reporting, Emask 0x%x\n", | |
2276 | err_mask); | |
2277 | } | |
2278 | } | |
2279 | ||
6d1003ae HR |
2280 | static void ata_dev_config_zac(struct ata_device *dev) |
2281 | { | |
2282 | struct ata_port *ap = dev->link->ap; | |
2283 | unsigned int err_mask; | |
2284 | u8 *identify_buf = ap->sector_buf; | |
6d1003ae HR |
2285 | |
2286 | dev->zac_zones_optimal_open = U32_MAX; | |
2287 | dev->zac_zones_optimal_nonseq = U32_MAX; | |
2288 | dev->zac_zones_max_open = U32_MAX; | |
2289 | ||
2290 | /* | |
2291 | * Always set the 'ZAC' flag for Host-managed devices. | |
2292 | */ | |
2293 | if (dev->class == ATA_DEV_ZAC) | |
2294 | dev->flags |= ATA_DFLAG_ZAC; | |
2295 | else if (ata_id_zoned_cap(dev->id) == 0x01) | |
2296 | /* | |
2297 | * Check for host-aware devices. | |
2298 | */ | |
2299 | dev->flags |= ATA_DFLAG_ZAC; | |
2300 | ||
2301 | if (!(dev->flags & ATA_DFLAG_ZAC)) | |
2302 | return; | |
2303 | ||
a0fd2454 | 2304 | if (!ata_identify_page_supported(dev, ATA_LOG_ZONED_INFORMATION)) { |
6d1003ae HR |
2305 | ata_dev_warn(dev, |
2306 | "ATA Zoned Information Log not supported\n"); | |
2307 | return; | |
2308 | } | |
ed36911c | 2309 | |
6d1003ae HR |
2310 | /* |
2311 | * Read IDENTIFY DEVICE data log, page 9 (Zoned-device information) | |
2312 | */ | |
1d51d5f3 | 2313 | err_mask = ata_read_log_page(dev, ATA_LOG_IDENTIFY_DEVICE, |
6d1003ae HR |
2314 | ATA_LOG_ZONED_INFORMATION, |
2315 | identify_buf, 1); | |
2316 | if (!err_mask) { | |
2317 | u64 zoned_cap, opt_open, opt_nonseq, max_open; | |
2318 | ||
2319 | zoned_cap = get_unaligned_le64(&identify_buf[8]); | |
2320 | if ((zoned_cap >> 63)) | |
2321 | dev->zac_zoned_cap = (zoned_cap & 1); | |
2322 | opt_open = get_unaligned_le64(&identify_buf[24]); | |
2323 | if ((opt_open >> 63)) | |
2324 | dev->zac_zones_optimal_open = (u32)opt_open; | |
2325 | opt_nonseq = get_unaligned_le64(&identify_buf[32]); | |
2326 | if ((opt_nonseq >> 63)) | |
2327 | dev->zac_zones_optimal_nonseq = (u32)opt_nonseq; | |
2328 | max_open = get_unaligned_le64(&identify_buf[40]); | |
2329 | if ((max_open >> 63)) | |
2330 | dev->zac_zones_max_open = (u32)max_open; | |
2331 | } | |
a6e6ce8e TH |
2332 | } |
2333 | ||
818831c8 CH |
2334 | static void ata_dev_config_trusted(struct ata_device *dev) |
2335 | { | |
2336 | struct ata_port *ap = dev->link->ap; | |
2337 | u64 trusted_cap; | |
2338 | unsigned int err; | |
2339 | ||
e8f11db9 CH |
2340 | if (!ata_id_has_trusted(dev->id)) |
2341 | return; | |
2342 | ||
818831c8 CH |
2343 | if (!ata_identify_page_supported(dev, ATA_LOG_SECURITY)) { |
2344 | ata_dev_warn(dev, | |
2345 | "Security Log not supported\n"); | |
2346 | return; | |
2347 | } | |
2348 | ||
2349 | err = ata_read_log_page(dev, ATA_LOG_IDENTIFY_DEVICE, ATA_LOG_SECURITY, | |
2350 | ap->sector_buf, 1); | |
fc5c8aa7 | 2351 | if (err) |
818831c8 | 2352 | return; |
818831c8 CH |
2353 | |
2354 | trusted_cap = get_unaligned_le64(&ap->sector_buf[40]); | |
2355 | if (!(trusted_cap & (1ULL << 63))) { | |
2356 | ata_dev_dbg(dev, | |
2357 | "Trusted Computing capability qword not valid!\n"); | |
2358 | return; | |
2359 | } | |
2360 | ||
2361 | if (trusted_cap & (1 << 0)) | |
2362 | dev->flags |= ATA_DFLAG_TRUSTED; | |
2363 | } | |
2364 | ||
891fd7c6 DLM |
2365 | static int ata_dev_config_lba(struct ata_device *dev) |
2366 | { | |
891fd7c6 DLM |
2367 | const u16 *id = dev->id; |
2368 | const char *lba_desc; | |
2369 | char ncq_desc[24]; | |
2370 | int ret; | |
2371 | ||
2372 | dev->flags |= ATA_DFLAG_LBA; | |
2373 | ||
2374 | if (ata_id_has_lba48(id)) { | |
2375 | lba_desc = "LBA48"; | |
2376 | dev->flags |= ATA_DFLAG_LBA48; | |
2377 | if (dev->n_sectors >= (1UL << 28) && | |
2378 | ata_id_has_flush_ext(id)) | |
2379 | dev->flags |= ATA_DFLAG_FLUSH_EXT; | |
2380 | } else { | |
2381 | lba_desc = "LBA"; | |
2382 | } | |
2383 | ||
2384 | /* config NCQ */ | |
2385 | ret = ata_dev_config_ncq(dev, ncq_desc, sizeof(ncq_desc)); | |
2386 | ||
2387 | /* print device info to dmesg */ | |
1c95a27c | 2388 | if (ata_dev_print_info(dev)) |
891fd7c6 DLM |
2389 | ata_dev_info(dev, |
2390 | "%llu sectors, multi %u: %s %s\n", | |
2391 | (unsigned long long)dev->n_sectors, | |
2392 | dev->multi_count, lba_desc, ncq_desc); | |
2393 | ||
2394 | return ret; | |
2395 | } | |
2396 | ||
2397 | static void ata_dev_config_chs(struct ata_device *dev) | |
2398 | { | |
891fd7c6 DLM |
2399 | const u16 *id = dev->id; |
2400 | ||
2401 | if (ata_id_current_chs_valid(id)) { | |
2402 | /* Current CHS translation is valid. */ | |
2403 | dev->cylinders = id[54]; | |
2404 | dev->heads = id[55]; | |
2405 | dev->sectors = id[56]; | |
2406 | } else { | |
2407 | /* Default translation */ | |
2408 | dev->cylinders = id[1]; | |
2409 | dev->heads = id[3]; | |
2410 | dev->sectors = id[6]; | |
2411 | } | |
2412 | ||
2413 | /* print device info to dmesg */ | |
1c95a27c | 2414 | if (ata_dev_print_info(dev)) |
891fd7c6 DLM |
2415 | ata_dev_info(dev, |
2416 | "%llu sectors, multi %u, CHS %u/%u/%u\n", | |
2417 | (unsigned long long)dev->n_sectors, | |
2418 | dev->multi_count, dev->cylinders, | |
2419 | dev->heads, dev->sectors); | |
2420 | } | |
2421 | ||
d8d8778c DLM |
2422 | static void ata_dev_config_devslp(struct ata_device *dev) |
2423 | { | |
2424 | u8 *sata_setting = dev->link->ap->sector_buf; | |
2425 | unsigned int err_mask; | |
2426 | int i, j; | |
2427 | ||
2428 | /* | |
2429 | * Check device sleep capability. Get DevSlp timing variables | |
2430 | * from SATA Settings page of Identify Device Data Log. | |
2431 | */ | |
06f6c4c6 DLM |
2432 | if (!ata_id_has_devslp(dev->id) || |
2433 | !ata_identify_page_supported(dev, ATA_LOG_SATA_SETTINGS)) | |
d8d8778c DLM |
2434 | return; |
2435 | ||
2436 | err_mask = ata_read_log_page(dev, | |
2437 | ATA_LOG_IDENTIFY_DEVICE, | |
2438 | ATA_LOG_SATA_SETTINGS, | |
2439 | sata_setting, 1); | |
fc5c8aa7 | 2440 | if (err_mask) |
d8d8778c | 2441 | return; |
d8d8778c DLM |
2442 | |
2443 | dev->flags |= ATA_DFLAG_DEVSLP; | |
2444 | for (i = 0; i < ATA_LOG_DEVSLP_SIZE; i++) { | |
2445 | j = ATA_LOG_DEVSLP_OFFSET + i; | |
2446 | dev->devslp_timing[i] = sata_setting[j]; | |
2447 | } | |
2448 | } | |
2449 | ||
fe22e1c2 DLM |
2450 | static void ata_dev_config_cpr(struct ata_device *dev) |
2451 | { | |
2452 | unsigned int err_mask; | |
2453 | size_t buf_len; | |
2454 | int i, nr_cpr = 0; | |
2455 | struct ata_cpr_log *cpr_log = NULL; | |
2456 | u8 *desc, *buf = NULL; | |
2457 | ||
c745dfc5 TE |
2458 | if (ata_id_major_version(dev->id) < 11) |
2459 | goto out; | |
2460 | ||
2461 | buf_len = ata_log_supported(dev, ATA_LOG_CONCURRENT_POSITIONING_RANGES); | |
2462 | if (buf_len == 0) | |
fe22e1c2 DLM |
2463 | goto out; |
2464 | ||
2465 | /* | |
fda17afc | 2466 | * Read the concurrent positioning ranges log (0x47). We can have at |
c745dfc5 TE |
2467 | * most 255 32B range descriptors plus a 64B header. This log varies in |
2468 | * size, so use the size reported in the GPL directory. Reading beyond | |
2469 | * the supported length will result in an error. | |
fe22e1c2 | 2470 | */ |
c745dfc5 | 2471 | buf_len <<= 9; |
fe22e1c2 DLM |
2472 | buf = kzalloc(buf_len, GFP_KERNEL); |
2473 | if (!buf) | |
2474 | goto out; | |
2475 | ||
fda17afc DLM |
2476 | err_mask = ata_read_log_page(dev, ATA_LOG_CONCURRENT_POSITIONING_RANGES, |
2477 | 0, buf, buf_len >> 9); | |
fe22e1c2 DLM |
2478 | if (err_mask) |
2479 | goto out; | |
2480 | ||
2481 | nr_cpr = buf[0]; | |
2482 | if (!nr_cpr) | |
2483 | goto out; | |
2484 | ||
2485 | cpr_log = kzalloc(struct_size(cpr_log, cpr, nr_cpr), GFP_KERNEL); | |
2486 | if (!cpr_log) | |
2487 | goto out; | |
2488 | ||
2489 | cpr_log->nr_cpr = nr_cpr; | |
2490 | desc = &buf[64]; | |
2491 | for (i = 0; i < nr_cpr; i++, desc += 32) { | |
2492 | cpr_log->cpr[i].num = desc[0]; | |
2493 | cpr_log->cpr[i].num_storage_elements = desc[1]; | |
2494 | cpr_log->cpr[i].start_lba = get_unaligned_le64(&desc[8]); | |
2495 | cpr_log->cpr[i].num_lbas = get_unaligned_le64(&desc[16]); | |
2496 | } | |
2497 | ||
2498 | out: | |
2499 | swap(dev->cpr_log, cpr_log); | |
2500 | kfree(cpr_log); | |
2501 | kfree(buf); | |
2502 | } | |
2503 | ||
d633b8a7 DLM |
2504 | static void ata_dev_print_features(struct ata_device *dev) |
2505 | { | |
2506 | if (!(dev->flags & ATA_DFLAG_FEATURES_MASK)) | |
2507 | return; | |
2508 | ||
2509 | ata_dev_info(dev, | |
fe22e1c2 | 2510 | "Features:%s%s%s%s%s%s\n", |
d633b8a7 DLM |
2511 | dev->flags & ATA_DFLAG_TRUSTED ? " Trust" : "", |
2512 | dev->flags & ATA_DFLAG_DA ? " Dev-Attention" : "", | |
2513 | dev->flags & ATA_DFLAG_DEVSLP ? " Dev-Sleep" : "", | |
2514 | dev->flags & ATA_DFLAG_NCQ_SEND_RECV ? " NCQ-sndrcv" : "", | |
fe22e1c2 DLM |
2515 | dev->flags & ATA_DFLAG_NCQ_PRIO ? " NCQ-prio" : "", |
2516 | dev->cpr_log ? " CPR" : ""); | |
d633b8a7 DLM |
2517 | } |
2518 | ||
49016aca | 2519 | /** |
ffeae418 | 2520 | * ata_dev_configure - Configure the specified ATA/ATAPI device |
ffeae418 TH |
2521 | * @dev: Target device to configure |
2522 | * | |
2523 | * Configure @dev according to @dev->id. Generic and low-level | |
2524 | * driver specific fixups are also applied. | |
49016aca TH |
2525 | * |
2526 | * LOCKING: | |
ffeae418 TH |
2527 | * Kernel thread context (may sleep) |
2528 | * | |
2529 | * RETURNS: | |
2530 | * 0 on success, -errno otherwise | |
49016aca | 2531 | */ |
efdaedc4 | 2532 | int ata_dev_configure(struct ata_device *dev) |
49016aca | 2533 | { |
9af5c9c9 | 2534 | struct ata_port *ap = dev->link->ap; |
891fd7c6 | 2535 | bool print_info = ata_dev_print_info(dev); |
1148c3a7 | 2536 | const u16 *id = dev->id; |
f0a6d77b | 2537 | unsigned int xfer_mask; |
65fe1f0f | 2538 | unsigned int err_mask; |
b352e57d | 2539 | char revbuf[7]; /* XYZ-99\0 */ |
3f64f565 EM |
2540 | char fwrevbuf[ATA_ID_FW_REV_LEN+1]; |
2541 | char modelbuf[ATA_ID_PROD_LEN+1]; | |
e6d902a3 | 2542 | int rc; |
49016aca | 2543 | |
96c810f2 HR |
2544 | if (!ata_dev_enabled(dev)) { |
2545 | ata_dev_dbg(dev, "no device\n"); | |
ffeae418 | 2546 | return 0; |
49016aca TH |
2547 | } |
2548 | ||
75683fe7 TH |
2549 | /* set horkage */ |
2550 | dev->horkage |= ata_dev_blacklisted(dev); | |
33267325 | 2551 | ata_force_horkage(dev); |
75683fe7 | 2552 | |
50af2fa1 | 2553 | if (dev->horkage & ATA_HORKAGE_DISABLE) { |
a9a79dfe | 2554 | ata_dev_info(dev, "unsupported device, disabling\n"); |
50af2fa1 TH |
2555 | ata_dev_disable(dev); |
2556 | return 0; | |
2557 | } | |
2558 | ||
2486fa56 TH |
2559 | if ((!atapi_enabled || (ap->flags & ATA_FLAG_NO_ATAPI)) && |
2560 | dev->class == ATA_DEV_ATAPI) { | |
a9a79dfe JP |
2561 | ata_dev_warn(dev, "WARNING: ATAPI is %s, device ignored\n", |
2562 | atapi_enabled ? "not supported with this driver" | |
2563 | : "disabled"); | |
2486fa56 TH |
2564 | ata_dev_disable(dev); |
2565 | return 0; | |
2566 | } | |
2567 | ||
9062712f TH |
2568 | rc = ata_do_link_spd_horkage(dev); |
2569 | if (rc) | |
2570 | return rc; | |
2571 | ||
ecd75ad5 TH |
2572 | /* some WD SATA-1 drives have issues with LPM, turn on NOLPM for them */ |
2573 | if ((dev->horkage & ATA_HORKAGE_WD_BROKEN_LPM) && | |
2574 | (id[ATA_ID_SATA_CAPABILITY] & 0xe) == 0x2) | |
2575 | dev->horkage |= ATA_HORKAGE_NOLPM; | |
2576 | ||
240630e6 HG |
2577 | if (ap->flags & ATA_FLAG_NO_LPM) |
2578 | dev->horkage |= ATA_HORKAGE_NOLPM; | |
2579 | ||
ecd75ad5 TH |
2580 | if (dev->horkage & ATA_HORKAGE_NOLPM) { |
2581 | ata_dev_warn(dev, "LPM support broken, forcing max_power\n"); | |
2582 | dev->link->ap->target_lpm_policy = ATA_LPM_MAX_POWER; | |
2583 | } | |
2584 | ||
6746544c TH |
2585 | /* let ACPI work its magic */ |
2586 | rc = ata_acpi_on_devcfg(dev); | |
2587 | if (rc) | |
2588 | return rc; | |
08573a86 | 2589 | |
05027adc TH |
2590 | /* massage HPA, do it early as it might change IDENTIFY data */ |
2591 | rc = ata_hpa_resize(dev); | |
2592 | if (rc) | |
2593 | return rc; | |
2594 | ||
c39f5ebe | 2595 | /* print device capabilities */ |
17a1e1be HR |
2596 | ata_dev_dbg(dev, |
2597 | "%s: cfg 49:%04x 82:%04x 83:%04x 84:%04x " | |
2598 | "85:%04x 86:%04x 87:%04x 88:%04x\n", | |
2599 | __func__, | |
2600 | id[49], id[82], id[83], id[84], | |
2601 | id[85], id[86], id[87], id[88]); | |
c39f5ebe | 2602 | |
208a9933 | 2603 | /* initialize to-be-configured parameters */ |
ea1dd4e1 | 2604 | dev->flags &= ~ATA_DFLAG_CFG_MASK; |
208a9933 TH |
2605 | dev->max_sectors = 0; |
2606 | dev->cdb_len = 0; | |
2607 | dev->n_sectors = 0; | |
2608 | dev->cylinders = 0; | |
2609 | dev->heads = 0; | |
2610 | dev->sectors = 0; | |
e18086d6 | 2611 | dev->multi_count = 0; |
208a9933 | 2612 | |
1da177e4 LT |
2613 | /* |
2614 | * common ATA, ATAPI feature tests | |
2615 | */ | |
2616 | ||
ff8854b2 | 2617 | /* find max transfer mode; for printk only */ |
1148c3a7 | 2618 | xfer_mask = ata_id_xfermask(id); |
1da177e4 | 2619 | |
6044f3c4 | 2620 | ata_dump_id(dev, id); |
1da177e4 | 2621 | |
ef143d57 AL |
2622 | /* SCSI only uses 4-char revisions, dump full 8 chars from ATA */ |
2623 | ata_id_c_string(dev->id, fwrevbuf, ATA_ID_FW_REV, | |
2624 | sizeof(fwrevbuf)); | |
2625 | ||
2626 | ata_id_c_string(dev->id, modelbuf, ATA_ID_PROD, | |
2627 | sizeof(modelbuf)); | |
2628 | ||
1da177e4 | 2629 | /* ATA-specific feature tests */ |
9162c657 | 2630 | if (dev->class == ATA_DEV_ATA || dev->class == ATA_DEV_ZAC) { |
b352e57d | 2631 | if (ata_id_is_cfa(id)) { |
62afe5d7 SS |
2632 | /* CPRM may make this media unusable */ |
2633 | if (id[ATA_ID_CFA_KEY_MGMT] & 1) | |
a9a79dfe JP |
2634 | ata_dev_warn(dev, |
2635 | "supports DRM functions and may not be fully accessible\n"); | |
b352e57d | 2636 | snprintf(revbuf, 7, "CFA"); |
ae8d4ee7 | 2637 | } else { |
2dcb407e | 2638 | snprintf(revbuf, 7, "ATA-%d", ata_id_major_version(id)); |
ae8d4ee7 AC |
2639 | /* Warn the user if the device has TPM extensions */ |
2640 | if (ata_id_has_tpm(id)) | |
a9a79dfe JP |
2641 | ata_dev_warn(dev, |
2642 | "supports DRM functions and may not be fully accessible\n"); | |
ae8d4ee7 | 2643 | } |
b352e57d | 2644 | |
1148c3a7 | 2645 | dev->n_sectors = ata_id_n_sectors(id); |
2940740b | 2646 | |
e18086d6 ML |
2647 | /* get current R/W Multiple count setting */ |
2648 | if ((dev->id[47] >> 8) == 0x80 && (dev->id[59] & 0x100)) { | |
2649 | unsigned int max = dev->id[47] & 0xff; | |
2650 | unsigned int cnt = dev->id[59] & 0xff; | |
2651 | /* only recognize/allow powers of two here */ | |
2652 | if (is_power_of_2(max) && is_power_of_2(cnt)) | |
2653 | if (cnt <= max) | |
2654 | dev->multi_count = cnt; | |
2655 | } | |
3f64f565 | 2656 | |
891fd7c6 | 2657 | /* print device info to dmesg */ |
1c95a27c | 2658 | if (print_info) |
891fd7c6 DLM |
2659 | ata_dev_info(dev, "%s: %s, %s, max %s\n", |
2660 | revbuf, modelbuf, fwrevbuf, | |
2661 | ata_mode_string(xfer_mask)); | |
8bf62ece | 2662 | |
891fd7c6 DLM |
2663 | if (ata_id_has_lba(id)) { |
2664 | rc = ata_dev_config_lba(dev); | |
388539f3 SL |
2665 | if (rc) |
2666 | return rc; | |
ffeae418 | 2667 | } else { |
891fd7c6 | 2668 | ata_dev_config_chs(dev); |
07f6f7d0 AL |
2669 | } |
2670 | ||
d8d8778c | 2671 | ata_dev_config_devslp(dev); |
e87fd28c | 2672 | ata_dev_config_sense_reporting(dev); |
6d1003ae | 2673 | ata_dev_config_zac(dev); |
818831c8 | 2674 | ata_dev_config_trusted(dev); |
fe22e1c2 | 2675 | ata_dev_config_cpr(dev); |
b1ffbf85 | 2676 | dev->cdb_len = 32; |
d633b8a7 | 2677 | |
1c95a27c | 2678 | if (print_info) |
d633b8a7 | 2679 | ata_dev_print_features(dev); |
1da177e4 LT |
2680 | } |
2681 | ||
2682 | /* ATAPI-specific feature tests */ | |
2c13b7ce | 2683 | else if (dev->class == ATA_DEV_ATAPI) { |
854c73a2 TH |
2684 | const char *cdb_intr_string = ""; |
2685 | const char *atapi_an_string = ""; | |
91163006 | 2686 | const char *dma_dir_string = ""; |
7d77b247 | 2687 | u32 sntf; |
08a556db | 2688 | |
1148c3a7 | 2689 | rc = atapi_cdb_len(id); |
1da177e4 | 2690 | if ((rc < 12) || (rc > ATAPI_CDB_LEN)) { |
16d42467 | 2691 | ata_dev_warn(dev, "unsupported CDB len %d\n", rc); |
ffeae418 | 2692 | rc = -EINVAL; |
1da177e4 LT |
2693 | goto err_out_nosup; |
2694 | } | |
6e7846e9 | 2695 | dev->cdb_len = (unsigned int) rc; |
1da177e4 | 2696 | |
7d77b247 TH |
2697 | /* Enable ATAPI AN if both the host and device have |
2698 | * the support. If PMP is attached, SNTF is required | |
2699 | * to enable ATAPI AN to discern between PHY status | |
2700 | * changed notifications and ATAPI ANs. | |
9f45cbd3 | 2701 | */ |
e7ecd435 TH |
2702 | if (atapi_an && |
2703 | (ap->flags & ATA_FLAG_AN) && ata_id_has_atapi_AN(id) && | |
071f44b1 | 2704 | (!sata_pmp_attached(ap) || |
7d77b247 | 2705 | sata_scr_read(&ap->link, SCR_NOTIFICATION, &sntf) == 0)) { |
9f45cbd3 | 2706 | /* issue SET feature command to turn this on */ |
218f3d30 JG |
2707 | err_mask = ata_dev_set_feature(dev, |
2708 | SETFEATURES_SATA_ENABLE, SATA_AN); | |
854c73a2 | 2709 | if (err_mask) |
a9a79dfe JP |
2710 | ata_dev_err(dev, |
2711 | "failed to enable ATAPI AN (err_mask=0x%x)\n", | |
2712 | err_mask); | |
854c73a2 | 2713 | else { |
9f45cbd3 | 2714 | dev->flags |= ATA_DFLAG_AN; |
854c73a2 TH |
2715 | atapi_an_string = ", ATAPI AN"; |
2716 | } | |
9f45cbd3 KCA |
2717 | } |
2718 | ||
08a556db | 2719 | if (ata_id_cdb_intr(dev->id)) { |
312f7da2 | 2720 | dev->flags |= ATA_DFLAG_CDB_INTR; |
08a556db AL |
2721 | cdb_intr_string = ", CDB intr"; |
2722 | } | |
312f7da2 | 2723 | |
966fbe19 | 2724 | if (atapi_dmadir || (dev->horkage & ATA_HORKAGE_ATAPI_DMADIR) || atapi_id_dmadir(dev->id)) { |
91163006 TH |
2725 | dev->flags |= ATA_DFLAG_DMADIR; |
2726 | dma_dir_string = ", DMADIR"; | |
2727 | } | |
2728 | ||
afe75951 | 2729 | if (ata_id_has_da(dev->id)) { |
b1354cbb | 2730 | dev->flags |= ATA_DFLAG_DA; |
afe75951 AL |
2731 | zpodd_init(dev); |
2732 | } | |
b1354cbb | 2733 | |
1da177e4 | 2734 | /* print device info to dmesg */ |
1c95a27c | 2735 | if (print_info) |
a9a79dfe JP |
2736 | ata_dev_info(dev, |
2737 | "ATAPI: %s, %s, max %s%s%s%s\n", | |
2738 | modelbuf, fwrevbuf, | |
2739 | ata_mode_string(xfer_mask), | |
2740 | cdb_intr_string, atapi_an_string, | |
2741 | dma_dir_string); | |
1da177e4 LT |
2742 | } |
2743 | ||
914ed354 TH |
2744 | /* determine max_sectors */ |
2745 | dev->max_sectors = ATA_MAX_SECTORS; | |
2746 | if (dev->flags & ATA_DFLAG_LBA48) | |
2747 | dev->max_sectors = ATA_MAX_SECTORS_LBA48; | |
2748 | ||
c5038fc0 AC |
2749 | /* Limit PATA drive on SATA cable bridge transfers to udma5, |
2750 | 200 sectors */ | |
3373efd8 | 2751 | if (ata_dev_knobble(dev)) { |
1c95a27c | 2752 | if (print_info) |
a9a79dfe | 2753 | ata_dev_info(dev, "applying bridge limits\n"); |
5a529139 | 2754 | dev->udma_mask &= ATA_UDMA5; |
4b2f3ede TH |
2755 | dev->max_sectors = ATA_MAX_SECTORS; |
2756 | } | |
2757 | ||
f8d8e579 | 2758 | if ((dev->class == ATA_DEV_ATAPI) && |
f442cd86 | 2759 | (atapi_command_packet_set(id) == TYPE_TAPE)) { |
f8d8e579 | 2760 | dev->max_sectors = ATA_MAX_SECTORS_TAPE; |
f442cd86 AL |
2761 | dev->horkage |= ATA_HORKAGE_STUCK_ERR; |
2762 | } | |
f8d8e579 | 2763 | |
75683fe7 | 2764 | if (dev->horkage & ATA_HORKAGE_MAX_SEC_128) |
03ec52de TH |
2765 | dev->max_sectors = min_t(unsigned int, ATA_MAX_SECTORS_128, |
2766 | dev->max_sectors); | |
18d6e9d5 | 2767 | |
af34d637 DM |
2768 | if (dev->horkage & ATA_HORKAGE_MAX_SEC_1024) |
2769 | dev->max_sectors = min_t(unsigned int, ATA_MAX_SECTORS_1024, | |
2770 | dev->max_sectors); | |
2771 | ||
a32450e1 SH |
2772 | if (dev->horkage & ATA_HORKAGE_MAX_SEC_LBA48) |
2773 | dev->max_sectors = ATA_MAX_SECTORS_LBA48; | |
2774 | ||
4b2f3ede | 2775 | if (ap->ops->dev_config) |
cd0d3bbc | 2776 | ap->ops->dev_config(dev); |
4b2f3ede | 2777 | |
c5038fc0 AC |
2778 | if (dev->horkage & ATA_HORKAGE_DIAGNOSTIC) { |
2779 | /* Let the user know. We don't want to disallow opens for | |
2780 | rescue purposes, or in case the vendor is just a blithering | |
2781 | idiot. Do this after the dev_config call as some controllers | |
2782 | with buggy firmware may want to avoid reporting false device | |
2783 | bugs */ | |
2784 | ||
2785 | if (print_info) { | |
a9a79dfe | 2786 | ata_dev_warn(dev, |
c5038fc0 | 2787 | "Drive reports diagnostics failure. This may indicate a drive\n"); |
a9a79dfe | 2788 | ata_dev_warn(dev, |
c5038fc0 AC |
2789 | "fault or invalid emulation. Contact drive vendor for information.\n"); |
2790 | } | |
2791 | } | |
2792 | ||
ac70a964 | 2793 | if ((dev->horkage & ATA_HORKAGE_FIRMWARE_WARN) && print_info) { |
a9a79dfe JP |
2794 | ata_dev_warn(dev, "WARNING: device requires firmware update to be fully functional\n"); |
2795 | ata_dev_warn(dev, " contact the vendor or visit http://ata.wiki.kernel.org\n"); | |
ac70a964 TH |
2796 | } |
2797 | ||
ffeae418 | 2798 | return 0; |
1da177e4 LT |
2799 | |
2800 | err_out_nosup: | |
ffeae418 | 2801 | return rc; |
1da177e4 LT |
2802 | } |
2803 | ||
be0d18df | 2804 | /** |
2e41e8e6 | 2805 | * ata_cable_40wire - return 40 wire cable type |
be0d18df AC |
2806 | * @ap: port |
2807 | * | |
2e41e8e6 | 2808 | * Helper method for drivers which want to hardwire 40 wire cable |
be0d18df AC |
2809 | * detection. |
2810 | */ | |
2811 | ||
2812 | int ata_cable_40wire(struct ata_port *ap) | |
2813 | { | |
2814 | return ATA_CBL_PATA40; | |
2815 | } | |
a52fbcfc | 2816 | EXPORT_SYMBOL_GPL(ata_cable_40wire); |
be0d18df AC |
2817 | |
2818 | /** | |
2e41e8e6 | 2819 | * ata_cable_80wire - return 80 wire cable type |
be0d18df AC |
2820 | * @ap: port |
2821 | * | |
2e41e8e6 | 2822 | * Helper method for drivers which want to hardwire 80 wire cable |
be0d18df AC |
2823 | * detection. |
2824 | */ | |
2825 | ||
2826 | int ata_cable_80wire(struct ata_port *ap) | |
2827 | { | |
2828 | return ATA_CBL_PATA80; | |
2829 | } | |
a52fbcfc | 2830 | EXPORT_SYMBOL_GPL(ata_cable_80wire); |
be0d18df AC |
2831 | |
2832 | /** | |
2833 | * ata_cable_unknown - return unknown PATA cable. | |
2834 | * @ap: port | |
2835 | * | |
2836 | * Helper method for drivers which have no PATA cable detection. | |
2837 | */ | |
2838 | ||
2839 | int ata_cable_unknown(struct ata_port *ap) | |
2840 | { | |
2841 | return ATA_CBL_PATA_UNK; | |
2842 | } | |
a52fbcfc | 2843 | EXPORT_SYMBOL_GPL(ata_cable_unknown); |
be0d18df | 2844 | |
c88f90c3 TH |
2845 | /** |
2846 | * ata_cable_ignore - return ignored PATA cable. | |
2847 | * @ap: port | |
2848 | * | |
2849 | * Helper method for drivers which don't use cable type to limit | |
2850 | * transfer mode. | |
2851 | */ | |
2852 | int ata_cable_ignore(struct ata_port *ap) | |
2853 | { | |
2854 | return ATA_CBL_PATA_IGN; | |
2855 | } | |
a52fbcfc | 2856 | EXPORT_SYMBOL_GPL(ata_cable_ignore); |
c88f90c3 | 2857 | |
be0d18df AC |
2858 | /** |
2859 | * ata_cable_sata - return SATA cable type | |
2860 | * @ap: port | |
2861 | * | |
2862 | * Helper method for drivers which have SATA cables | |
2863 | */ | |
2864 | ||
2865 | int ata_cable_sata(struct ata_port *ap) | |
2866 | { | |
2867 | return ATA_CBL_SATA; | |
2868 | } | |
a52fbcfc | 2869 | EXPORT_SYMBOL_GPL(ata_cable_sata); |
be0d18df | 2870 | |
1da177e4 LT |
2871 | /** |
2872 | * ata_bus_probe - Reset and probe ATA bus | |
2873 | * @ap: Bus to probe | |
2874 | * | |
0cba632b JG |
2875 | * Master ATA bus probing function. Initiates a hardware-dependent |
2876 | * bus reset, then attempts to identify any devices found on | |
2877 | * the bus. | |
2878 | * | |
1da177e4 | 2879 | * LOCKING: |
0cba632b | 2880 | * PCI/etc. bus probe sem. |
1da177e4 LT |
2881 | * |
2882 | * RETURNS: | |
96072e69 | 2883 | * Zero on success, negative errno otherwise. |
1da177e4 LT |
2884 | */ |
2885 | ||
80289167 | 2886 | int ata_bus_probe(struct ata_port *ap) |
1da177e4 | 2887 | { |
28ca5c57 | 2888 | unsigned int classes[ATA_MAX_DEVICES]; |
14d2bac1 | 2889 | int tries[ATA_MAX_DEVICES]; |
f58229f8 | 2890 | int rc; |
e82cbdb9 | 2891 | struct ata_device *dev; |
1da177e4 | 2892 | |
1eca4365 | 2893 | ata_for_each_dev(dev, &ap->link, ALL) |
f58229f8 | 2894 | tries[dev->devno] = ATA_PROBE_MAX_TRIES; |
14d2bac1 TH |
2895 | |
2896 | retry: | |
1eca4365 | 2897 | ata_for_each_dev(dev, &ap->link, ALL) { |
cdeab114 TH |
2898 | /* If we issue an SRST then an ATA drive (not ATAPI) |
2899 | * may change configuration and be in PIO0 timing. If | |
2900 | * we do a hard reset (or are coming from power on) | |
2901 | * this is true for ATA or ATAPI. Until we've set a | |
2902 | * suitable controller mode we should not touch the | |
2903 | * bus as we may be talking too fast. | |
2904 | */ | |
2905 | dev->pio_mode = XFER_PIO_0; | |
5416912a | 2906 | dev->dma_mode = 0xff; |
cdeab114 TH |
2907 | |
2908 | /* If the controller has a pio mode setup function | |
2909 | * then use it to set the chipset to rights. Don't | |
2910 | * touch the DMA setup as that will be dealt with when | |
2911 | * configuring devices. | |
2912 | */ | |
2913 | if (ap->ops->set_piomode) | |
2914 | ap->ops->set_piomode(ap, dev); | |
2915 | } | |
2916 | ||
2044470c | 2917 | /* reset and determine device classes */ |
52783c5d | 2918 | ap->ops->phy_reset(ap); |
2061a47a | 2919 | |
1eca4365 | 2920 | ata_for_each_dev(dev, &ap->link, ALL) { |
3e4ec344 | 2921 | if (dev->class != ATA_DEV_UNKNOWN) |
52783c5d TH |
2922 | classes[dev->devno] = dev->class; |
2923 | else | |
2924 | classes[dev->devno] = ATA_DEV_NONE; | |
2044470c | 2925 | |
52783c5d | 2926 | dev->class = ATA_DEV_UNKNOWN; |
28ca5c57 | 2927 | } |
1da177e4 | 2928 | |
f31f0cc2 JG |
2929 | /* read IDENTIFY page and configure devices. We have to do the identify |
2930 | specific sequence bass-ackwards so that PDIAG- is released by | |
2931 | the slave device */ | |
2932 | ||
1eca4365 | 2933 | ata_for_each_dev(dev, &ap->link, ALL_REVERSE) { |
f58229f8 TH |
2934 | if (tries[dev->devno]) |
2935 | dev->class = classes[dev->devno]; | |
ffeae418 | 2936 | |
14d2bac1 | 2937 | if (!ata_dev_enabled(dev)) |
ffeae418 | 2938 | continue; |
ffeae418 | 2939 | |
bff04647 TH |
2940 | rc = ata_dev_read_id(dev, &dev->class, ATA_READID_POSTRESET, |
2941 | dev->id); | |
14d2bac1 TH |
2942 | if (rc) |
2943 | goto fail; | |
f31f0cc2 JG |
2944 | } |
2945 | ||
be0d18df AC |
2946 | /* Now ask for the cable type as PDIAG- should have been released */ |
2947 | if (ap->ops->cable_detect) | |
2948 | ap->cbl = ap->ops->cable_detect(ap); | |
2949 | ||
1eca4365 TH |
2950 | /* We may have SATA bridge glue hiding here irrespective of |
2951 | * the reported cable types and sensed types. When SATA | |
2952 | * drives indicate we have a bridge, we don't know which end | |
2953 | * of the link the bridge is which is a problem. | |
2954 | */ | |
2955 | ata_for_each_dev(dev, &ap->link, ENABLED) | |
614fe29b AC |
2956 | if (ata_id_is_sata(dev->id)) |
2957 | ap->cbl = ATA_CBL_SATA; | |
614fe29b | 2958 | |
f31f0cc2 JG |
2959 | /* After the identify sequence we can now set up the devices. We do |
2960 | this in the normal order so that the user doesn't get confused */ | |
2961 | ||
1eca4365 | 2962 | ata_for_each_dev(dev, &ap->link, ENABLED) { |
9af5c9c9 | 2963 | ap->link.eh_context.i.flags |= ATA_EHI_PRINTINFO; |
efdaedc4 | 2964 | rc = ata_dev_configure(dev); |
9af5c9c9 | 2965 | ap->link.eh_context.i.flags &= ~ATA_EHI_PRINTINFO; |
14d2bac1 TH |
2966 | if (rc) |
2967 | goto fail; | |
1da177e4 LT |
2968 | } |
2969 | ||
e82cbdb9 | 2970 | /* configure transfer mode */ |
0260731f | 2971 | rc = ata_set_mode(&ap->link, &dev); |
4ae72a1e | 2972 | if (rc) |
51713d35 | 2973 | goto fail; |
1da177e4 | 2974 | |
1eca4365 TH |
2975 | ata_for_each_dev(dev, &ap->link, ENABLED) |
2976 | return 0; | |
1da177e4 | 2977 | |
96072e69 | 2978 | return -ENODEV; |
14d2bac1 TH |
2979 | |
2980 | fail: | |
4ae72a1e TH |
2981 | tries[dev->devno]--; |
2982 | ||
14d2bac1 TH |
2983 | switch (rc) { |
2984 | case -EINVAL: | |
4ae72a1e | 2985 | /* eeek, something went very wrong, give up */ |
14d2bac1 TH |
2986 | tries[dev->devno] = 0; |
2987 | break; | |
4ae72a1e TH |
2988 | |
2989 | case -ENODEV: | |
2990 | /* give it just one more chance */ | |
2991 | tries[dev->devno] = min(tries[dev->devno], 1); | |
df561f66 | 2992 | fallthrough; |
14d2bac1 | 2993 | case -EIO: |
4ae72a1e TH |
2994 | if (tries[dev->devno] == 1) { |
2995 | /* This is the last chance, better to slow | |
2996 | * down than lose it. | |
2997 | */ | |
a07d499b | 2998 | sata_down_spd_limit(&ap->link, 0); |
4ae72a1e TH |
2999 | ata_down_xfermask_limit(dev, ATA_DNXFER_PIO); |
3000 | } | |
14d2bac1 TH |
3001 | } |
3002 | ||
4ae72a1e | 3003 | if (!tries[dev->devno]) |
3373efd8 | 3004 | ata_dev_disable(dev); |
ec573755 | 3005 | |
14d2bac1 | 3006 | goto retry; |
1da177e4 LT |
3007 | } |
3008 | ||
3be680b7 TH |
3009 | /** |
3010 | * sata_print_link_status - Print SATA link status | |
936fd732 | 3011 | * @link: SATA link to printk link status about |
3be680b7 TH |
3012 | * |
3013 | * This function prints link speed and status of a SATA link. | |
3014 | * | |
3015 | * LOCKING: | |
3016 | * None. | |
3017 | */ | |
6bdb4fc9 | 3018 | static void sata_print_link_status(struct ata_link *link) |
3be680b7 | 3019 | { |
6d5f9732 | 3020 | u32 sstatus, scontrol, tmp; |
3be680b7 | 3021 | |
936fd732 | 3022 | if (sata_scr_read(link, SCR_STATUS, &sstatus)) |
3be680b7 | 3023 | return; |
936fd732 | 3024 | sata_scr_read(link, SCR_CONTROL, &scontrol); |
3be680b7 | 3025 | |
b1c72916 | 3026 | if (ata_phys_link_online(link)) { |
3be680b7 | 3027 | tmp = (sstatus >> 4) & 0xf; |
a9a79dfe JP |
3028 | ata_link_info(link, "SATA link up %s (SStatus %X SControl %X)\n", |
3029 | sata_spd_string(tmp), sstatus, scontrol); | |
3be680b7 | 3030 | } else { |
a9a79dfe JP |
3031 | ata_link_info(link, "SATA link down (SStatus %X SControl %X)\n", |
3032 | sstatus, scontrol); | |
3be680b7 TH |
3033 | } |
3034 | } | |
3035 | ||
ebdfca6e AC |
3036 | /** |
3037 | * ata_dev_pair - return other device on cable | |
ebdfca6e AC |
3038 | * @adev: device |
3039 | * | |
3040 | * Obtain the other device on the same cable, or if none is | |
3041 | * present NULL is returned | |
3042 | */ | |
2e9edbf8 | 3043 | |
3373efd8 | 3044 | struct ata_device *ata_dev_pair(struct ata_device *adev) |
ebdfca6e | 3045 | { |
9af5c9c9 TH |
3046 | struct ata_link *link = adev->link; |
3047 | struct ata_device *pair = &link->device[1 - adev->devno]; | |
e1211e3f | 3048 | if (!ata_dev_enabled(pair)) |
ebdfca6e AC |
3049 | return NULL; |
3050 | return pair; | |
3051 | } | |
a52fbcfc | 3052 | EXPORT_SYMBOL_GPL(ata_dev_pair); |
ebdfca6e | 3053 | |
1c3fae4d | 3054 | /** |
3c567b7d | 3055 | * sata_down_spd_limit - adjust SATA spd limit downward |
936fd732 | 3056 | * @link: Link to adjust SATA spd limit for |
a07d499b | 3057 | * @spd_limit: Additional limit |
1c3fae4d | 3058 | * |
936fd732 | 3059 | * Adjust SATA spd limit of @link downward. Note that this |
1c3fae4d | 3060 | * function only adjusts the limit. The change must be applied |
3c567b7d | 3061 | * using sata_set_spd(). |
1c3fae4d | 3062 | * |
a07d499b TH |
3063 | * If @spd_limit is non-zero, the speed is limited to equal to or |
3064 | * lower than @spd_limit if such speed is supported. If | |
3065 | * @spd_limit is slower than any supported speed, only the lowest | |
3066 | * supported speed is allowed. | |
3067 | * | |
1c3fae4d TH |
3068 | * LOCKING: |
3069 | * Inherited from caller. | |
3070 | * | |
3071 | * RETURNS: | |
3072 | * 0 on success, negative errno on failure | |
3073 | */ | |
a07d499b | 3074 | int sata_down_spd_limit(struct ata_link *link, u32 spd_limit) |
1c3fae4d | 3075 | { |
81952c54 | 3076 | u32 sstatus, spd, mask; |
a07d499b | 3077 | int rc, bit; |
1c3fae4d | 3078 | |
936fd732 | 3079 | if (!sata_scr_valid(link)) |
008a7896 TH |
3080 | return -EOPNOTSUPP; |
3081 | ||
3082 | /* If SCR can be read, use it to determine the current SPD. | |
936fd732 | 3083 | * If not, use cached value in link->sata_spd. |
008a7896 | 3084 | */ |
936fd732 | 3085 | rc = sata_scr_read(link, SCR_STATUS, &sstatus); |
9913ff8a | 3086 | if (rc == 0 && ata_sstatus_online(sstatus)) |
008a7896 TH |
3087 | spd = (sstatus >> 4) & 0xf; |
3088 | else | |
936fd732 | 3089 | spd = link->sata_spd; |
1c3fae4d | 3090 | |
936fd732 | 3091 | mask = link->sata_spd_limit; |
1c3fae4d TH |
3092 | if (mask <= 1) |
3093 | return -EINVAL; | |
008a7896 TH |
3094 | |
3095 | /* unconditionally mask off the highest bit */ | |
a07d499b TH |
3096 | bit = fls(mask) - 1; |
3097 | mask &= ~(1 << bit); | |
1c3fae4d | 3098 | |
2dc0b46b DM |
3099 | /* |
3100 | * Mask off all speeds higher than or equal to the current one. At | |
3101 | * this point, if current SPD is not available and we previously | |
3102 | * recorded the link speed from SStatus, the driver has already | |
3103 | * masked off the highest bit so mask should already be 1 or 0. | |
3104 | * Otherwise, we should not force 1.5Gbps on a link where we have | |
3105 | * not previously recorded speed from SStatus. Just return in this | |
3106 | * case. | |
008a7896 TH |
3107 | */ |
3108 | if (spd > 1) | |
3109 | mask &= (1 << (spd - 1)) - 1; | |
3110 | else | |
2dc0b46b | 3111 | return -EINVAL; |
008a7896 TH |
3112 | |
3113 | /* were we already at the bottom? */ | |
1c3fae4d TH |
3114 | if (!mask) |
3115 | return -EINVAL; | |
3116 | ||
a07d499b TH |
3117 | if (spd_limit) { |
3118 | if (mask & ((1 << spd_limit) - 1)) | |
3119 | mask &= (1 << spd_limit) - 1; | |
3120 | else { | |
3121 | bit = ffs(mask) - 1; | |
3122 | mask = 1 << bit; | |
3123 | } | |
3124 | } | |
3125 | ||
936fd732 | 3126 | link->sata_spd_limit = mask; |
1c3fae4d | 3127 | |
a9a79dfe JP |
3128 | ata_link_warn(link, "limiting SATA link speed to %s\n", |
3129 | sata_spd_string(fls(mask))); | |
1c3fae4d TH |
3130 | |
3131 | return 0; | |
3132 | } | |
3133 | ||
a9b2c120 | 3134 | #ifdef CONFIG_ATA_ACPI |
a0f79b92 TH |
3135 | /** |
3136 | * ata_timing_cycle2mode - find xfer mode for the specified cycle duration | |
3137 | * @xfer_shift: ATA_SHIFT_* value for transfer type to examine. | |
3138 | * @cycle: cycle duration in ns | |
3139 | * | |
3140 | * Return matching xfer mode for @cycle. The returned mode is of | |
3141 | * the transfer type specified by @xfer_shift. If @cycle is too | |
3142 | * slow for @xfer_shift, 0xff is returned. If @cycle is faster | |
3143 | * than the fastest known mode, the fasted mode is returned. | |
3144 | * | |
3145 | * LOCKING: | |
3146 | * None. | |
3147 | * | |
3148 | * RETURNS: | |
3149 | * Matching xfer_mode, 0xff if no match found. | |
3150 | */ | |
3151 | u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle) | |
3152 | { | |
3153 | u8 base_mode = 0xff, last_mode = 0xff; | |
3154 | const struct ata_xfer_ent *ent; | |
3155 | const struct ata_timing *t; | |
3156 | ||
3157 | for (ent = ata_xfer_tbl; ent->shift >= 0; ent++) | |
3158 | if (ent->shift == xfer_shift) | |
3159 | base_mode = ent->base; | |
3160 | ||
3161 | for (t = ata_timing_find_mode(base_mode); | |
3162 | t && ata_xfer_mode2shift(t->mode) == xfer_shift; t++) { | |
3163 | unsigned short this_cycle; | |
3164 | ||
3165 | switch (xfer_shift) { | |
3166 | case ATA_SHIFT_PIO: | |
3167 | case ATA_SHIFT_MWDMA: | |
3168 | this_cycle = t->cycle; | |
3169 | break; | |
3170 | case ATA_SHIFT_UDMA: | |
3171 | this_cycle = t->udma; | |
3172 | break; | |
3173 | default: | |
3174 | return 0xff; | |
3175 | } | |
3176 | ||
3177 | if (cycle > this_cycle) | |
3178 | break; | |
3179 | ||
3180 | last_mode = t->mode; | |
3181 | } | |
3182 | ||
3183 | return last_mode; | |
3184 | } | |
a9b2c120 | 3185 | #endif |
a0f79b92 | 3186 | |
cf176e1a TH |
3187 | /** |
3188 | * ata_down_xfermask_limit - adjust dev xfer masks downward | |
cf176e1a | 3189 | * @dev: Device to adjust xfer masks |
458337db | 3190 | * @sel: ATA_DNXFER_* selector |
cf176e1a TH |
3191 | * |
3192 | * Adjust xfer masks of @dev downward. Note that this function | |
3193 | * does not apply the change. Invoking ata_set_mode() afterwards | |
3194 | * will apply the limit. | |
3195 | * | |
3196 | * LOCKING: | |
3197 | * Inherited from caller. | |
3198 | * | |
3199 | * RETURNS: | |
3200 | * 0 on success, negative errno on failure | |
3201 | */ | |
458337db | 3202 | int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel) |
cf176e1a | 3203 | { |
458337db | 3204 | char buf[32]; |
f0a6d77b SS |
3205 | unsigned int orig_mask, xfer_mask; |
3206 | unsigned int pio_mask, mwdma_mask, udma_mask; | |
458337db | 3207 | int quiet, highbit; |
cf176e1a | 3208 | |
458337db TH |
3209 | quiet = !!(sel & ATA_DNXFER_QUIET); |
3210 | sel &= ~ATA_DNXFER_QUIET; | |
cf176e1a | 3211 | |
458337db TH |
3212 | xfer_mask = orig_mask = ata_pack_xfermask(dev->pio_mask, |
3213 | dev->mwdma_mask, | |
3214 | dev->udma_mask); | |
3215 | ata_unpack_xfermask(xfer_mask, &pio_mask, &mwdma_mask, &udma_mask); | |
cf176e1a | 3216 | |
458337db TH |
3217 | switch (sel) { |
3218 | case ATA_DNXFER_PIO: | |
3219 | highbit = fls(pio_mask) - 1; | |
3220 | pio_mask &= ~(1 << highbit); | |
3221 | break; | |
3222 | ||
3223 | case ATA_DNXFER_DMA: | |
3224 | if (udma_mask) { | |
3225 | highbit = fls(udma_mask) - 1; | |
3226 | udma_mask &= ~(1 << highbit); | |
3227 | if (!udma_mask) | |
3228 | return -ENOENT; | |
3229 | } else if (mwdma_mask) { | |
3230 | highbit = fls(mwdma_mask) - 1; | |
3231 | mwdma_mask &= ~(1 << highbit); | |
3232 | if (!mwdma_mask) | |
3233 | return -ENOENT; | |
3234 | } | |
3235 | break; | |
3236 | ||
3237 | case ATA_DNXFER_40C: | |
3238 | udma_mask &= ATA_UDMA_MASK_40C; | |
3239 | break; | |
3240 | ||
3241 | case ATA_DNXFER_FORCE_PIO0: | |
3242 | pio_mask &= 1; | |
df561f66 | 3243 | fallthrough; |
458337db TH |
3244 | case ATA_DNXFER_FORCE_PIO: |
3245 | mwdma_mask = 0; | |
3246 | udma_mask = 0; | |
3247 | break; | |
3248 | ||
458337db TH |
3249 | default: |
3250 | BUG(); | |
3251 | } | |
3252 | ||
3253 | xfer_mask &= ata_pack_xfermask(pio_mask, mwdma_mask, udma_mask); | |
3254 | ||
3255 | if (!(xfer_mask & ATA_MASK_PIO) || xfer_mask == orig_mask) | |
3256 | return -ENOENT; | |
3257 | ||
3258 | if (!quiet) { | |
3259 | if (xfer_mask & (ATA_MASK_MWDMA | ATA_MASK_UDMA)) | |
3260 | snprintf(buf, sizeof(buf), "%s:%s", | |
3261 | ata_mode_string(xfer_mask), | |
3262 | ata_mode_string(xfer_mask & ATA_MASK_PIO)); | |
3263 | else | |
3264 | snprintf(buf, sizeof(buf), "%s", | |
3265 | ata_mode_string(xfer_mask)); | |
3266 | ||
a9a79dfe | 3267 | ata_dev_warn(dev, "limiting speed to %s\n", buf); |
458337db | 3268 | } |
cf176e1a TH |
3269 | |
3270 | ata_unpack_xfermask(xfer_mask, &dev->pio_mask, &dev->mwdma_mask, | |
3271 | &dev->udma_mask); | |
3272 | ||
cf176e1a | 3273 | return 0; |
cf176e1a TH |
3274 | } |
3275 | ||
3373efd8 | 3276 | static int ata_dev_set_mode(struct ata_device *dev) |
1da177e4 | 3277 | { |
d0cb43b3 | 3278 | struct ata_port *ap = dev->link->ap; |
9af5c9c9 | 3279 | struct ata_eh_context *ehc = &dev->link->eh_context; |
d0cb43b3 | 3280 | const bool nosetxfer = dev->horkage & ATA_HORKAGE_NOSETXFER; |
4055dee7 TH |
3281 | const char *dev_err_whine = ""; |
3282 | int ign_dev_err = 0; | |
d0cb43b3 | 3283 | unsigned int err_mask = 0; |
83206a29 | 3284 | int rc; |
1da177e4 | 3285 | |
e8384607 | 3286 | dev->flags &= ~ATA_DFLAG_PIO; |
1da177e4 LT |
3287 | if (dev->xfer_shift == ATA_SHIFT_PIO) |
3288 | dev->flags |= ATA_DFLAG_PIO; | |
3289 | ||
d0cb43b3 TH |
3290 | if (nosetxfer && ap->flags & ATA_FLAG_SATA && ata_id_is_sata(dev->id)) |
3291 | dev_err_whine = " (SET_XFERMODE skipped)"; | |
3292 | else { | |
3293 | if (nosetxfer) | |
a9a79dfe JP |
3294 | ata_dev_warn(dev, |
3295 | "NOSETXFER but PATA detected - can't " | |
3296 | "skip SETXFER, might malfunction\n"); | |
d0cb43b3 TH |
3297 | err_mask = ata_dev_set_xfermode(dev); |
3298 | } | |
2dcb407e | 3299 | |
4055dee7 TH |
3300 | if (err_mask & ~AC_ERR_DEV) |
3301 | goto fail; | |
3302 | ||
3303 | /* revalidate */ | |
3304 | ehc->i.flags |= ATA_EHI_POST_SETMODE; | |
3305 | rc = ata_dev_revalidate(dev, ATA_DEV_UNKNOWN, 0); | |
3306 | ehc->i.flags &= ~ATA_EHI_POST_SETMODE; | |
3307 | if (rc) | |
3308 | return rc; | |
3309 | ||
b93fda12 AC |
3310 | if (dev->xfer_shift == ATA_SHIFT_PIO) { |
3311 | /* Old CFA may refuse this command, which is just fine */ | |
3312 | if (ata_id_is_cfa(dev->id)) | |
3313 | ign_dev_err = 1; | |
3314 | /* Catch several broken garbage emulations plus some pre | |
3315 | ATA devices */ | |
3316 | if (ata_id_major_version(dev->id) == 0 && | |
3317 | dev->pio_mode <= XFER_PIO_2) | |
3318 | ign_dev_err = 1; | |
3319 | /* Some very old devices and some bad newer ones fail | |
3320 | any kind of SET_XFERMODE request but support PIO0-2 | |
3321 | timings and no IORDY */ | |
3322 | if (!ata_id_has_iordy(dev->id) && dev->pio_mode <= XFER_PIO_2) | |
3323 | ign_dev_err = 1; | |
3324 | } | |
3acaf94b AC |
3325 | /* Early MWDMA devices do DMA but don't allow DMA mode setting. |
3326 | Don't fail an MWDMA0 set IFF the device indicates it is in MWDMA0 */ | |
c5038fc0 | 3327 | if (dev->xfer_shift == ATA_SHIFT_MWDMA && |
3acaf94b AC |
3328 | dev->dma_mode == XFER_MW_DMA_0 && |
3329 | (dev->id[63] >> 8) & 1) | |
4055dee7 | 3330 | ign_dev_err = 1; |
3acaf94b | 3331 | |
4055dee7 TH |
3332 | /* if the device is actually configured correctly, ignore dev err */ |
3333 | if (dev->xfer_mode == ata_xfer_mask2mode(ata_id_xfermask(dev->id))) | |
3334 | ign_dev_err = 1; | |
1da177e4 | 3335 | |
4055dee7 TH |
3336 | if (err_mask & AC_ERR_DEV) { |
3337 | if (!ign_dev_err) | |
3338 | goto fail; | |
3339 | else | |
3340 | dev_err_whine = " (device error ignored)"; | |
3341 | } | |
48a8a14f | 3342 | |
4633778b HR |
3343 | ata_dev_dbg(dev, "xfer_shift=%u, xfer_mode=0x%x\n", |
3344 | dev->xfer_shift, (int)dev->xfer_mode); | |
1da177e4 | 3345 | |
07b9b6d6 DLM |
3346 | if (!(ehc->i.flags & ATA_EHI_QUIET) || |
3347 | ehc->i.flags & ATA_EHI_DID_HARDRESET) | |
3348 | ata_dev_info(dev, "configured for %s%s\n", | |
3349 | ata_mode_string(ata_xfer_mode2mask(dev->xfer_mode)), | |
3350 | dev_err_whine); | |
4055dee7 | 3351 | |
83206a29 | 3352 | return 0; |
4055dee7 TH |
3353 | |
3354 | fail: | |
a9a79dfe | 3355 | ata_dev_err(dev, "failed to set xfermode (err_mask=0x%x)\n", err_mask); |
4055dee7 | 3356 | return -EIO; |
1da177e4 LT |
3357 | } |
3358 | ||
1da177e4 | 3359 | /** |
04351821 | 3360 | * ata_do_set_mode - Program timings and issue SET FEATURES - XFER |
0260731f | 3361 | * @link: link on which timings will be programmed |
1967b7ff | 3362 | * @r_failed_dev: out parameter for failed device |
1da177e4 | 3363 | * |
04351821 AC |
3364 | * Standard implementation of the function used to tune and set |
3365 | * ATA device disk transfer mode (PIO3, UDMA6, etc.). If | |
3366 | * ata_dev_set_mode() fails, pointer to the failing device is | |
e82cbdb9 | 3367 | * returned in @r_failed_dev. |
780a87f7 | 3368 | * |
1da177e4 | 3369 | * LOCKING: |
0cba632b | 3370 | * PCI/etc. bus probe sem. |
e82cbdb9 TH |
3371 | * |
3372 | * RETURNS: | |
3373 | * 0 on success, negative errno otherwise | |
1da177e4 | 3374 | */ |
04351821 | 3375 | |
0260731f | 3376 | int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev) |
1da177e4 | 3377 | { |
0260731f | 3378 | struct ata_port *ap = link->ap; |
e8e0619f | 3379 | struct ata_device *dev; |
f58229f8 | 3380 | int rc = 0, used_dma = 0, found = 0; |
3adcebb2 | 3381 | |
a6d5a51c | 3382 | /* step 1: calculate xfer_mask */ |
1eca4365 | 3383 | ata_for_each_dev(dev, link, ENABLED) { |
f0a6d77b | 3384 | unsigned int pio_mask, dma_mask; |
b3a70601 | 3385 | unsigned int mode_mask; |
a6d5a51c | 3386 | |
b3a70601 AC |
3387 | mode_mask = ATA_DMA_MASK_ATA; |
3388 | if (dev->class == ATA_DEV_ATAPI) | |
3389 | mode_mask = ATA_DMA_MASK_ATAPI; | |
3390 | else if (ata_id_is_cfa(dev->id)) | |
3391 | mode_mask = ATA_DMA_MASK_CFA; | |
3392 | ||
3373efd8 | 3393 | ata_dev_xfermask(dev); |
33267325 | 3394 | ata_force_xfermask(dev); |
1da177e4 | 3395 | |
acf356b1 | 3396 | pio_mask = ata_pack_xfermask(dev->pio_mask, 0, 0); |
b3a70601 AC |
3397 | |
3398 | if (libata_dma_mask & mode_mask) | |
80a9c430 SS |
3399 | dma_mask = ata_pack_xfermask(0, dev->mwdma_mask, |
3400 | dev->udma_mask); | |
b3a70601 AC |
3401 | else |
3402 | dma_mask = 0; | |
3403 | ||
acf356b1 TH |
3404 | dev->pio_mode = ata_xfer_mask2mode(pio_mask); |
3405 | dev->dma_mode = ata_xfer_mask2mode(dma_mask); | |
5444a6f4 | 3406 | |
4f65977d | 3407 | found = 1; |
b15b3eba | 3408 | if (ata_dma_enabled(dev)) |
5444a6f4 | 3409 | used_dma = 1; |
a6d5a51c | 3410 | } |
4f65977d | 3411 | if (!found) |
e82cbdb9 | 3412 | goto out; |
a6d5a51c TH |
3413 | |
3414 | /* step 2: always set host PIO timings */ | |
1eca4365 | 3415 | ata_for_each_dev(dev, link, ENABLED) { |
70cd071e | 3416 | if (dev->pio_mode == 0xff) { |
a9a79dfe | 3417 | ata_dev_warn(dev, "no PIO support\n"); |
e8e0619f | 3418 | rc = -EINVAL; |
e82cbdb9 | 3419 | goto out; |
e8e0619f TH |
3420 | } |
3421 | ||
3422 | dev->xfer_mode = dev->pio_mode; | |
3423 | dev->xfer_shift = ATA_SHIFT_PIO; | |
3424 | if (ap->ops->set_piomode) | |
3425 | ap->ops->set_piomode(ap, dev); | |
3426 | } | |
1da177e4 | 3427 | |
a6d5a51c | 3428 | /* step 3: set host DMA timings */ |
1eca4365 TH |
3429 | ata_for_each_dev(dev, link, ENABLED) { |
3430 | if (!ata_dma_enabled(dev)) | |
e8e0619f TH |
3431 | continue; |
3432 | ||
3433 | dev->xfer_mode = dev->dma_mode; | |
3434 | dev->xfer_shift = ata_xfer_mode2shift(dev->dma_mode); | |
3435 | if (ap->ops->set_dmamode) | |
3436 | ap->ops->set_dmamode(ap, dev); | |
3437 | } | |
1da177e4 LT |
3438 | |
3439 | /* step 4: update devices' xfer mode */ | |
1eca4365 | 3440 | ata_for_each_dev(dev, link, ENABLED) { |
3373efd8 | 3441 | rc = ata_dev_set_mode(dev); |
5bbc53f4 | 3442 | if (rc) |
e82cbdb9 | 3443 | goto out; |
83206a29 | 3444 | } |
1da177e4 | 3445 | |
e8e0619f TH |
3446 | /* Record simplex status. If we selected DMA then the other |
3447 | * host channels are not permitted to do so. | |
5444a6f4 | 3448 | */ |
cca3974e | 3449 | if (used_dma && (ap->host->flags & ATA_HOST_SIMPLEX)) |
032af1ce | 3450 | ap->host->simplex_claimed = ap; |
5444a6f4 | 3451 | |
e82cbdb9 TH |
3452 | out: |
3453 | if (rc) | |
3454 | *r_failed_dev = dev; | |
3455 | return rc; | |
1da177e4 | 3456 | } |
a52fbcfc | 3457 | EXPORT_SYMBOL_GPL(ata_do_set_mode); |
1da177e4 | 3458 | |
aa2731ad TH |
3459 | /** |
3460 | * ata_wait_ready - wait for link to become ready | |
3461 | * @link: link to be waited on | |
3462 | * @deadline: deadline jiffies for the operation | |
3463 | * @check_ready: callback to check link readiness | |
3464 | * | |
3465 | * Wait for @link to become ready. @check_ready should return | |
3466 | * positive number if @link is ready, 0 if it isn't, -ENODEV if | |
3467 | * link doesn't seem to be occupied, other errno for other error | |
3468 | * conditions. | |
3469 | * | |
3470 | * Transient -ENODEV conditions are allowed for | |
3471 | * ATA_TMOUT_FF_WAIT. | |
3472 | * | |
3473 | * LOCKING: | |
3474 | * EH context. | |
3475 | * | |
3476 | * RETURNS: | |
c9b5560a | 3477 | * 0 if @link is ready before @deadline; otherwise, -errno. |
aa2731ad TH |
3478 | */ |
3479 | int ata_wait_ready(struct ata_link *link, unsigned long deadline, | |
3480 | int (*check_ready)(struct ata_link *link)) | |
3481 | { | |
3482 | unsigned long start = jiffies; | |
b48d58f5 | 3483 | unsigned long nodev_deadline; |
aa2731ad TH |
3484 | int warned = 0; |
3485 | ||
b48d58f5 TH |
3486 | /* choose which 0xff timeout to use, read comment in libata.h */ |
3487 | if (link->ap->host->flags & ATA_HOST_PARALLEL_SCAN) | |
3488 | nodev_deadline = ata_deadline(start, ATA_TMOUT_FF_WAIT_LONG); | |
3489 | else | |
3490 | nodev_deadline = ata_deadline(start, ATA_TMOUT_FF_WAIT); | |
3491 | ||
b1c72916 TH |
3492 | /* Slave readiness can't be tested separately from master. On |
3493 | * M/S emulation configuration, this function should be called | |
3494 | * only on the master and it will handle both master and slave. | |
3495 | */ | |
3496 | WARN_ON(link == link->ap->slave_link); | |
3497 | ||
aa2731ad TH |
3498 | if (time_after(nodev_deadline, deadline)) |
3499 | nodev_deadline = deadline; | |
3500 | ||
3501 | while (1) { | |
3502 | unsigned long now = jiffies; | |
3503 | int ready, tmp; | |
3504 | ||
3505 | ready = tmp = check_ready(link); | |
3506 | if (ready > 0) | |
3507 | return 0; | |
3508 | ||
b48d58f5 TH |
3509 | /* |
3510 | * -ENODEV could be transient. Ignore -ENODEV if link | |
aa2731ad | 3511 | * is online. Also, some SATA devices take a long |
b48d58f5 TH |
3512 | * time to clear 0xff after reset. Wait for |
3513 | * ATA_TMOUT_FF_WAIT[_LONG] on -ENODEV if link isn't | |
3514 | * offline. | |
aa2731ad TH |
3515 | * |
3516 | * Note that some PATA controllers (pata_ali) explode | |
3517 | * if status register is read more than once when | |
3518 | * there's no device attached. | |
3519 | */ | |
3520 | if (ready == -ENODEV) { | |
3521 | if (ata_link_online(link)) | |
3522 | ready = 0; | |
3523 | else if ((link->ap->flags & ATA_FLAG_SATA) && | |
3524 | !ata_link_offline(link) && | |
3525 | time_before(now, nodev_deadline)) | |
3526 | ready = 0; | |
3527 | } | |
3528 | ||
3529 | if (ready) | |
3530 | return ready; | |
3531 | if (time_after(now, deadline)) | |
3532 | return -EBUSY; | |
3533 | ||
3534 | if (!warned && time_after(now, start + 5 * HZ) && | |
3535 | (deadline - now > 3 * HZ)) { | |
a9a79dfe | 3536 | ata_link_warn(link, |
aa2731ad TH |
3537 | "link is slow to respond, please be patient " |
3538 | "(ready=%d)\n", tmp); | |
3539 | warned = 1; | |
3540 | } | |
3541 | ||
97750ceb | 3542 | ata_msleep(link->ap, 50); |
aa2731ad TH |
3543 | } |
3544 | } | |
3545 | ||
3546 | /** | |
3547 | * ata_wait_after_reset - wait for link to become ready after reset | |
3548 | * @link: link to be waited on | |
3549 | * @deadline: deadline jiffies for the operation | |
3550 | * @check_ready: callback to check link readiness | |
3551 | * | |
3552 | * Wait for @link to become ready after reset. | |
3553 | * | |
3554 | * LOCKING: | |
3555 | * EH context. | |
3556 | * | |
3557 | * RETURNS: | |
c9b5560a | 3558 | * 0 if @link is ready before @deadline; otherwise, -errno. |
aa2731ad | 3559 | */ |
2b4221bb | 3560 | int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, |
aa2731ad TH |
3561 | int (*check_ready)(struct ata_link *link)) |
3562 | { | |
97750ceb | 3563 | ata_msleep(link->ap, ATA_WAIT_AFTER_RESET); |
aa2731ad TH |
3564 | |
3565 | return ata_wait_ready(link, deadline, check_ready); | |
3566 | } | |
a52fbcfc | 3567 | EXPORT_SYMBOL_GPL(ata_wait_after_reset); |
aa2731ad | 3568 | |
f5914a46 | 3569 | /** |
0aa1113d | 3570 | * ata_std_prereset - prepare for reset |
cc0680a5 | 3571 | * @link: ATA link to be reset |
d4b2bab4 | 3572 | * @deadline: deadline jiffies for the operation |
f5914a46 | 3573 | * |
cc0680a5 | 3574 | * @link is about to be reset. Initialize it. Failure from |
b8cffc6a TH |
3575 | * prereset makes libata abort whole reset sequence and give up |
3576 | * that port, so prereset should be best-effort. It does its | |
3577 | * best to prepare for reset sequence but if things go wrong, it | |
3578 | * should just whine, not fail. | |
f5914a46 TH |
3579 | * |
3580 | * LOCKING: | |
3581 | * Kernel thread context (may sleep) | |
3582 | * | |
3583 | * RETURNS: | |
ac1eb665 | 3584 | * Always 0. |
f5914a46 | 3585 | */ |
0aa1113d | 3586 | int ata_std_prereset(struct ata_link *link, unsigned long deadline) |
f5914a46 | 3587 | { |
cc0680a5 | 3588 | struct ata_port *ap = link->ap; |
936fd732 | 3589 | struct ata_eh_context *ehc = &link->eh_context; |
e9c83914 | 3590 | const unsigned long *timing = sata_ehc_deb_timing(ehc); |
f5914a46 TH |
3591 | int rc; |
3592 | ||
f5914a46 TH |
3593 | /* if we're about to do hardreset, nothing more to do */ |
3594 | if (ehc->i.action & ATA_EH_HARDRESET) | |
3595 | return 0; | |
3596 | ||
936fd732 | 3597 | /* if SATA, resume link */ |
a16abc0b | 3598 | if (ap->flags & ATA_FLAG_SATA) { |
936fd732 | 3599 | rc = sata_link_resume(link, timing, deadline); |
b8cffc6a TH |
3600 | /* whine about phy resume failure but proceed */ |
3601 | if (rc && rc != -EOPNOTSUPP) | |
a9a79dfe JP |
3602 | ata_link_warn(link, |
3603 | "failed to resume link for reset (errno=%d)\n", | |
3604 | rc); | |
f5914a46 TH |
3605 | } |
3606 | ||
45db2f6c | 3607 | /* no point in trying softreset on offline link */ |
b1c72916 | 3608 | if (ata_phys_link_offline(link)) |
45db2f6c TH |
3609 | ehc->i.action &= ~ATA_EH_SOFTRESET; |
3610 | ||
f5914a46 TH |
3611 | return 0; |
3612 | } | |
a52fbcfc | 3613 | EXPORT_SYMBOL_GPL(ata_std_prereset); |
f5914a46 | 3614 | |
57c9efdf TH |
3615 | /** |
3616 | * sata_std_hardreset - COMRESET w/o waiting or classification | |
3617 | * @link: link to reset | |
3618 | * @class: resulting class of attached device | |
3619 | * @deadline: deadline jiffies for the operation | |
3620 | * | |
3621 | * Standard SATA COMRESET w/o waiting or classification. | |
3622 | * | |
3623 | * LOCKING: | |
3624 | * Kernel thread context (may sleep) | |
3625 | * | |
3626 | * RETURNS: | |
3627 | * 0 if link offline, -EAGAIN if link online, -errno on errors. | |
3628 | */ | |
3629 | int sata_std_hardreset(struct ata_link *link, unsigned int *class, | |
3630 | unsigned long deadline) | |
3631 | { | |
3632 | const unsigned long *timing = sata_ehc_deb_timing(&link->eh_context); | |
3633 | bool online; | |
3634 | int rc; | |
3635 | ||
3636 | /* do hardreset */ | |
3637 | rc = sata_link_hardreset(link, timing, deadline, &online, NULL); | |
57c9efdf TH |
3638 | return online ? -EAGAIN : rc; |
3639 | } | |
a52fbcfc | 3640 | EXPORT_SYMBOL_GPL(sata_std_hardreset); |
57c9efdf | 3641 | |
c2bd5804 | 3642 | /** |
203c75b8 | 3643 | * ata_std_postreset - standard postreset callback |
cc0680a5 | 3644 | * @link: the target ata_link |
c2bd5804 TH |
3645 | * @classes: classes of attached devices |
3646 | * | |
3647 | * This function is invoked after a successful reset. Note that | |
3648 | * the device might have been reset more than once using | |
3649 | * different reset methods before postreset is invoked. | |
c2bd5804 | 3650 | * |
c2bd5804 TH |
3651 | * LOCKING: |
3652 | * Kernel thread context (may sleep) | |
3653 | */ | |
203c75b8 | 3654 | void ata_std_postreset(struct ata_link *link, unsigned int *classes) |
c2bd5804 | 3655 | { |
f046519f TH |
3656 | u32 serror; |
3657 | ||
f046519f TH |
3658 | /* reset complete, clear SError */ |
3659 | if (!sata_scr_read(link, SCR_ERROR, &serror)) | |
3660 | sata_scr_write(link, SCR_ERROR, serror); | |
3661 | ||
c2bd5804 | 3662 | /* print link status */ |
936fd732 | 3663 | sata_print_link_status(link); |
c2bd5804 | 3664 | } |
a52fbcfc | 3665 | EXPORT_SYMBOL_GPL(ata_std_postreset); |
c2bd5804 | 3666 | |
623a3128 TH |
3667 | /** |
3668 | * ata_dev_same_device - Determine whether new ID matches configured device | |
623a3128 TH |
3669 | * @dev: device to compare against |
3670 | * @new_class: class of the new device | |
3671 | * @new_id: IDENTIFY page of the new device | |
3672 | * | |
3673 | * Compare @new_class and @new_id against @dev and determine | |
3674 | * whether @dev is the device indicated by @new_class and | |
3675 | * @new_id. | |
3676 | * | |
3677 | * LOCKING: | |
3678 | * None. | |
3679 | * | |
3680 | * RETURNS: | |
3681 | * 1 if @dev matches @new_class and @new_id, 0 otherwise. | |
3682 | */ | |
3373efd8 TH |
3683 | static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class, |
3684 | const u16 *new_id) | |
623a3128 TH |
3685 | { |
3686 | const u16 *old_id = dev->id; | |
a0cf733b TH |
3687 | unsigned char model[2][ATA_ID_PROD_LEN + 1]; |
3688 | unsigned char serial[2][ATA_ID_SERNO_LEN + 1]; | |
623a3128 TH |
3689 | |
3690 | if (dev->class != new_class) { | |
a9a79dfe JP |
3691 | ata_dev_info(dev, "class mismatch %d != %d\n", |
3692 | dev->class, new_class); | |
623a3128 TH |
3693 | return 0; |
3694 | } | |
3695 | ||
a0cf733b TH |
3696 | ata_id_c_string(old_id, model[0], ATA_ID_PROD, sizeof(model[0])); |
3697 | ata_id_c_string(new_id, model[1], ATA_ID_PROD, sizeof(model[1])); | |
3698 | ata_id_c_string(old_id, serial[0], ATA_ID_SERNO, sizeof(serial[0])); | |
3699 | ata_id_c_string(new_id, serial[1], ATA_ID_SERNO, sizeof(serial[1])); | |
623a3128 TH |
3700 | |
3701 | if (strcmp(model[0], model[1])) { | |
a9a79dfe JP |
3702 | ata_dev_info(dev, "model number mismatch '%s' != '%s'\n", |
3703 | model[0], model[1]); | |
623a3128 TH |
3704 | return 0; |
3705 | } | |
3706 | ||
3707 | if (strcmp(serial[0], serial[1])) { | |
a9a79dfe JP |
3708 | ata_dev_info(dev, "serial number mismatch '%s' != '%s'\n", |
3709 | serial[0], serial[1]); | |
623a3128 TH |
3710 | return 0; |
3711 | } | |
3712 | ||
623a3128 TH |
3713 | return 1; |
3714 | } | |
3715 | ||
3716 | /** | |
fe30911b | 3717 | * ata_dev_reread_id - Re-read IDENTIFY data |
3fae450c | 3718 | * @dev: target ATA device |
bff04647 | 3719 | * @readid_flags: read ID flags |
623a3128 TH |
3720 | * |
3721 | * Re-read IDENTIFY page and make sure @dev is still attached to | |
3722 | * the port. | |
3723 | * | |
3724 | * LOCKING: | |
3725 | * Kernel thread context (may sleep) | |
3726 | * | |
3727 | * RETURNS: | |
3728 | * 0 on success, negative errno otherwise | |
3729 | */ | |
fe30911b | 3730 | int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags) |
623a3128 | 3731 | { |
5eb45c02 | 3732 | unsigned int class = dev->class; |
9af5c9c9 | 3733 | u16 *id = (void *)dev->link->ap->sector_buf; |
623a3128 TH |
3734 | int rc; |
3735 | ||
fe635c7e | 3736 | /* read ID data */ |
bff04647 | 3737 | rc = ata_dev_read_id(dev, &class, readid_flags, id); |
623a3128 | 3738 | if (rc) |
fe30911b | 3739 | return rc; |
623a3128 TH |
3740 | |
3741 | /* is the device still there? */ | |
fe30911b TH |
3742 | if (!ata_dev_same_device(dev, class, id)) |
3743 | return -ENODEV; | |
623a3128 | 3744 | |
fe635c7e | 3745 | memcpy(dev->id, id, sizeof(id[0]) * ATA_ID_WORDS); |
fe30911b TH |
3746 | return 0; |
3747 | } | |
3748 | ||
3749 | /** | |
3750 | * ata_dev_revalidate - Revalidate ATA device | |
3751 | * @dev: device to revalidate | |
422c9daa | 3752 | * @new_class: new class code |
fe30911b TH |
3753 | * @readid_flags: read ID flags |
3754 | * | |
3755 | * Re-read IDENTIFY page, make sure @dev is still attached to the | |
3756 | * port and reconfigure it according to the new IDENTIFY page. | |
3757 | * | |
3758 | * LOCKING: | |
3759 | * Kernel thread context (may sleep) | |
3760 | * | |
3761 | * RETURNS: | |
3762 | * 0 on success, negative errno otherwise | |
3763 | */ | |
422c9daa TH |
3764 | int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class, |
3765 | unsigned int readid_flags) | |
fe30911b | 3766 | { |
6ddcd3b0 | 3767 | u64 n_sectors = dev->n_sectors; |
5920dadf | 3768 | u64 n_native_sectors = dev->n_native_sectors; |
fe30911b TH |
3769 | int rc; |
3770 | ||
3771 | if (!ata_dev_enabled(dev)) | |
3772 | return -ENODEV; | |
3773 | ||
422c9daa TH |
3774 | /* fail early if !ATA && !ATAPI to avoid issuing [P]IDENTIFY to PMP */ |
3775 | if (ata_class_enabled(new_class) && | |
f0d0613d BP |
3776 | new_class != ATA_DEV_ATA && |
3777 | new_class != ATA_DEV_ATAPI && | |
9162c657 | 3778 | new_class != ATA_DEV_ZAC && |
f0d0613d | 3779 | new_class != ATA_DEV_SEMB) { |
a9a79dfe JP |
3780 | ata_dev_info(dev, "class mismatch %u != %u\n", |
3781 | dev->class, new_class); | |
422c9daa TH |
3782 | rc = -ENODEV; |
3783 | goto fail; | |
3784 | } | |
3785 | ||
fe30911b TH |
3786 | /* re-read ID */ |
3787 | rc = ata_dev_reread_id(dev, readid_flags); | |
3788 | if (rc) | |
3789 | goto fail; | |
623a3128 TH |
3790 | |
3791 | /* configure device according to the new ID */ | |
efdaedc4 | 3792 | rc = ata_dev_configure(dev); |
6ddcd3b0 TH |
3793 | if (rc) |
3794 | goto fail; | |
3795 | ||
3796 | /* verify n_sectors hasn't changed */ | |
445d211b TH |
3797 | if (dev->class != ATA_DEV_ATA || !n_sectors || |
3798 | dev->n_sectors == n_sectors) | |
3799 | return 0; | |
3800 | ||
3801 | /* n_sectors has changed */ | |
a9a79dfe JP |
3802 | ata_dev_warn(dev, "n_sectors mismatch %llu != %llu\n", |
3803 | (unsigned long long)n_sectors, | |
3804 | (unsigned long long)dev->n_sectors); | |
445d211b TH |
3805 | |
3806 | /* | |
3807 | * Something could have caused HPA to be unlocked | |
3808 | * involuntarily. If n_native_sectors hasn't changed and the | |
3809 | * new size matches it, keep the device. | |
3810 | */ | |
3811 | if (dev->n_native_sectors == n_native_sectors && | |
3812 | dev->n_sectors > n_sectors && dev->n_sectors == n_native_sectors) { | |
a9a79dfe JP |
3813 | ata_dev_warn(dev, |
3814 | "new n_sectors matches native, probably " | |
3815 | "late HPA unlock, n_sectors updated\n"); | |
68939ce5 | 3816 | /* use the larger n_sectors */ |
445d211b | 3817 | return 0; |
6ddcd3b0 TH |
3818 | } |
3819 | ||
445d211b TH |
3820 | /* |
3821 | * Some BIOSes boot w/o HPA but resume w/ HPA locked. Try | |
3822 | * unlocking HPA in those cases. | |
3823 | * | |
3824 | * https://bugzilla.kernel.org/show_bug.cgi?id=15396 | |
3825 | */ | |
3826 | if (dev->n_native_sectors == n_native_sectors && | |
3827 | dev->n_sectors < n_sectors && n_sectors == n_native_sectors && | |
3828 | !(dev->horkage & ATA_HORKAGE_BROKEN_HPA)) { | |
a9a79dfe JP |
3829 | ata_dev_warn(dev, |
3830 | "old n_sectors matches native, probably " | |
3831 | "late HPA lock, will try to unlock HPA\n"); | |
445d211b TH |
3832 | /* try unlocking HPA */ |
3833 | dev->flags |= ATA_DFLAG_UNLOCK_HPA; | |
3834 | rc = -EIO; | |
3835 | } else | |
3836 | rc = -ENODEV; | |
623a3128 | 3837 | |
445d211b TH |
3838 | /* restore original n_[native_]sectors and fail */ |
3839 | dev->n_native_sectors = n_native_sectors; | |
3840 | dev->n_sectors = n_sectors; | |
623a3128 | 3841 | fail: |
a9a79dfe | 3842 | ata_dev_err(dev, "revalidation failed (errno=%d)\n", rc); |
623a3128 TH |
3843 | return rc; |
3844 | } | |
3845 | ||
6919a0a6 AC |
3846 | struct ata_blacklist_entry { |
3847 | const char *model_num; | |
3848 | const char *model_rev; | |
3849 | unsigned long horkage; | |
3850 | }; | |
3851 | ||
3852 | static const struct ata_blacklist_entry ata_device_blacklist [] = { | |
3853 | /* Devices with DMA related problems under Linux */ | |
3854 | { "WDC AC11000H", NULL, ATA_HORKAGE_NODMA }, | |
3855 | { "WDC AC22100H", NULL, ATA_HORKAGE_NODMA }, | |
3856 | { "WDC AC32500H", NULL, ATA_HORKAGE_NODMA }, | |
3857 | { "WDC AC33100H", NULL, ATA_HORKAGE_NODMA }, | |
3858 | { "WDC AC31600H", NULL, ATA_HORKAGE_NODMA }, | |
3859 | { "WDC AC32100H", "24.09P07", ATA_HORKAGE_NODMA }, | |
3860 | { "WDC AC23200L", "21.10N21", ATA_HORKAGE_NODMA }, | |
3861 | { "Compaq CRD-8241B", NULL, ATA_HORKAGE_NODMA }, | |
3862 | { "CRD-8400B", NULL, ATA_HORKAGE_NODMA }, | |
7da4c935 | 3863 | { "CRD-848[02]B", NULL, ATA_HORKAGE_NODMA }, |
6919a0a6 AC |
3864 | { "CRD-84", NULL, ATA_HORKAGE_NODMA }, |
3865 | { "SanDisk SDP3B", NULL, ATA_HORKAGE_NODMA }, | |
3866 | { "SanDisk SDP3B-64", NULL, ATA_HORKAGE_NODMA }, | |
3867 | { "SANYO CD-ROM CRD", NULL, ATA_HORKAGE_NODMA }, | |
3868 | { "HITACHI CDR-8", NULL, ATA_HORKAGE_NODMA }, | |
7da4c935 | 3869 | { "HITACHI CDR-8[34]35",NULL, ATA_HORKAGE_NODMA }, |
6919a0a6 AC |
3870 | { "Toshiba CD-ROM XM-6202B", NULL, ATA_HORKAGE_NODMA }, |
3871 | { "TOSHIBA CD-ROM XM-1702BC", NULL, ATA_HORKAGE_NODMA }, | |
3872 | { "CD-532E-A", NULL, ATA_HORKAGE_NODMA }, | |
3873 | { "E-IDE CD-ROM CR-840",NULL, ATA_HORKAGE_NODMA }, | |
3874 | { "CD-ROM Drive/F5A", NULL, ATA_HORKAGE_NODMA }, | |
3875 | { "WPI CDD-820", NULL, ATA_HORKAGE_NODMA }, | |
3876 | { "SAMSUNG CD-ROM SC-148C", NULL, ATA_HORKAGE_NODMA }, | |
3877 | { "SAMSUNG CD-ROM SC", NULL, ATA_HORKAGE_NODMA }, | |
6919a0a6 AC |
3878 | { "ATAPI CD-ROM DRIVE 40X MAXIMUM",NULL,ATA_HORKAGE_NODMA }, |
3879 | { "_NEC DV5800A", NULL, ATA_HORKAGE_NODMA }, | |
2dcb407e | 3880 | { "SAMSUNG CD-ROM SN-124", "N001", ATA_HORKAGE_NODMA }, |
39f19886 | 3881 | { "Seagate STT20000A", NULL, ATA_HORKAGE_NODMA }, |
d17d794c | 3882 | { " 2GB ATA Flash Disk", "ADMA428M", ATA_HORKAGE_NODMA }, |
b00622fc | 3883 | { "VRFDFC22048UCHC-TE*", NULL, ATA_HORKAGE_NODMA }, |
3af9a77a | 3884 | /* Odd clown on sil3726/4726 PMPs */ |
50af2fa1 | 3885 | { "Config Disk", NULL, ATA_HORKAGE_DISABLE }, |
a66307d4 HR |
3886 | /* Similar story with ASMedia 1092 */ |
3887 | { "ASMT109x- Config", NULL, ATA_HORKAGE_DISABLE }, | |
6919a0a6 | 3888 | |
18d6e9d5 | 3889 | /* Weird ATAPI devices */ |
40a1d531 | 3890 | { "TORiSAN DVD-ROM DRD-N216", NULL, ATA_HORKAGE_MAX_SEC_128 }, |
6a87e42e | 3891 | { "QUANTUM DAT DAT72-000", NULL, ATA_HORKAGE_ATAPI_MOD16_DMA }, |
a32450e1 | 3892 | { "Slimtype DVD A DS8A8SH", NULL, ATA_HORKAGE_MAX_SEC_LBA48 }, |
0523f037 | 3893 | { "Slimtype DVD A DS8A9SH", NULL, ATA_HORKAGE_MAX_SEC_LBA48 }, |
18d6e9d5 | 3894 | |
af34d637 DM |
3895 | /* |
3896 | * Causes silent data corruption with higher max sects. | |
3897 | * http://lkml.kernel.org/g/x49wpy40ysk.fsf@segfault.boston.devel.redhat.com | |
3898 | */ | |
3899 | { "ST380013AS", "3.20", ATA_HORKAGE_MAX_SEC_1024 }, | |
1488a1e3 TH |
3900 | |
3901 | /* | |
e0edc8c5 | 3902 | * These devices time out with higher max sects. |
1488a1e3 TH |
3903 | * https://bugzilla.kernel.org/show_bug.cgi?id=121671 |
3904 | */ | |
e0edc8c5 | 3905 | { "LITEON CX1-JB*-HP", NULL, ATA_HORKAGE_MAX_SEC_1024 }, |
db5ff909 | 3906 | { "LITEON EP1-*", NULL, ATA_HORKAGE_MAX_SEC_1024 }, |
af34d637 | 3907 | |
6919a0a6 AC |
3908 | /* Devices we expect to fail diagnostics */ |
3909 | ||
3910 | /* Devices where NCQ should be avoided */ | |
3911 | /* NCQ is slow */ | |
2dcb407e | 3912 | { "WDC WD740ADFD-00", NULL, ATA_HORKAGE_NONCQ }, |
ef1429c0 | 3913 | { "WDC WD740ADFD-00NLR1", NULL, ATA_HORKAGE_NONCQ }, |
09125ea6 TH |
3914 | /* http://thread.gmane.org/gmane.linux.ide/14907 */ |
3915 | { "FUJITSU MHT2060BH", NULL, ATA_HORKAGE_NONCQ }, | |
7acfaf30 | 3916 | /* NCQ is broken */ |
539cc7c7 | 3917 | { "Maxtor *", "BANC*", ATA_HORKAGE_NONCQ }, |
0e3dbc01 | 3918 | { "Maxtor 7V300F0", "VA111630", ATA_HORKAGE_NONCQ }, |
da6f0ec2 | 3919 | { "ST380817AS", "3.42", ATA_HORKAGE_NONCQ }, |
e41bd3e8 | 3920 | { "ST3160023AS", "3.42", ATA_HORKAGE_NONCQ }, |
5ccfca97 | 3921 | { "OCZ CORE_SSD", "02.10104", ATA_HORKAGE_NONCQ }, |
539cc7c7 | 3922 | |
ac70a964 | 3923 | /* Seagate NCQ + FLUSH CACHE firmware bug */ |
4d1f9082 | 3924 | { "ST31500341AS", "SD1[5-9]", ATA_HORKAGE_NONCQ | |
ac70a964 | 3925 | ATA_HORKAGE_FIRMWARE_WARN }, |
d10d491f | 3926 | |
4d1f9082 | 3927 | { "ST31000333AS", "SD1[5-9]", ATA_HORKAGE_NONCQ | |
d10d491f TH |
3928 | ATA_HORKAGE_FIRMWARE_WARN }, |
3929 | ||
4d1f9082 | 3930 | { "ST3640[36]23AS", "SD1[5-9]", ATA_HORKAGE_NONCQ | |
d10d491f TH |
3931 | ATA_HORKAGE_FIRMWARE_WARN }, |
3932 | ||
4d1f9082 | 3933 | { "ST3320[68]13AS", "SD1[5-9]", ATA_HORKAGE_NONCQ | |
ac70a964 TH |
3934 | ATA_HORKAGE_FIRMWARE_WARN }, |
3935 | ||
31f6264e HG |
3936 | /* drives which fail FPDMA_AA activation (some may freeze afterwards) |
3937 | the ST disks also have LPM issues */ | |
8756a25b | 3938 | { "ST1000LM024 HN-M101MBB", NULL, ATA_HORKAGE_BROKEN_FPDMA_AA | |
ef1429c0 | 3939 | ATA_HORKAGE_NOLPM }, |
08c85d2a | 3940 | { "VB0250EAVER", "HPG7", ATA_HORKAGE_BROKEN_FPDMA_AA }, |
87809942 | 3941 | |
36e337d0 RH |
3942 | /* Blacklist entries taken from Silicon Image 3124/3132 |
3943 | Windows driver .inf file - also several Linux problem reports */ | |
ef1429c0 DLM |
3944 | { "HTS541060G9SA00", "MB3OC60D", ATA_HORKAGE_NONCQ }, |
3945 | { "HTS541080G9SA00", "MB4OC60D", ATA_HORKAGE_NONCQ }, | |
3946 | { "HTS541010G9SA00", "MBZOC60D", ATA_HORKAGE_NONCQ }, | |
6919a0a6 | 3947 | |
68b0ddb2 | 3948 | /* https://bugzilla.kernel.org/show_bug.cgi?id=15573 */ |
ef1429c0 | 3949 | { "C300-CTFDDAC128MAG", "0001", ATA_HORKAGE_NONCQ }, |
68b0ddb2 | 3950 | |
3b545563 | 3951 | /* Sandisk SD7/8/9s lock up hard on large trims */ |
ef1429c0 | 3952 | { "SanDisk SD[789]*", NULL, ATA_HORKAGE_MAX_TRIM_128M }, |
322579dc | 3953 | |
16c55b03 | 3954 | /* devices which puke on READ_NATIVE_MAX */ |
ef1429c0 | 3955 | { "HDS724040KLSA80", "KFAOA20N", ATA_HORKAGE_BROKEN_HPA }, |
16c55b03 TH |
3956 | { "WDC WD3200JD-00KLB0", "WD-WCAMR1130137", ATA_HORKAGE_BROKEN_HPA }, |
3957 | { "WDC WD2500JD-00HBB0", "WD-WMAL71490727", ATA_HORKAGE_BROKEN_HPA }, | |
3958 | { "MAXTOR 6L080L4", "A93.0500", ATA_HORKAGE_BROKEN_HPA }, | |
6919a0a6 | 3959 | |
7831387b TH |
3960 | /* this one allows HPA unlocking but fails IOs on the area */ |
3961 | { "OCZ-VERTEX", "1.30", ATA_HORKAGE_BROKEN_HPA }, | |
3962 | ||
93328e11 | 3963 | /* Devices which report 1 sector over size HPA */ |
ef1429c0 DLM |
3964 | { "ST340823A", NULL, ATA_HORKAGE_HPA_SIZE }, |
3965 | { "ST320413A", NULL, ATA_HORKAGE_HPA_SIZE }, | |
3966 | { "ST310211A", NULL, ATA_HORKAGE_HPA_SIZE }, | |
93328e11 | 3967 | |
6bbfd53d | 3968 | /* Devices which get the IVB wrong */ |
ef1429c0 | 3969 | { "QUANTUM FIREBALLlct10 05", "A03.0900", ATA_HORKAGE_IVB }, |
a79067e5 | 3970 | /* Maybe we should just blacklist TSSTcorp... */ |
ef1429c0 | 3971 | { "TSSTcorp CDDVDW SH-S202[HJN]", "SB0[01]", ATA_HORKAGE_IVB }, |
6bbfd53d | 3972 | |
9ce8e307 | 3973 | /* Devices that do not need bridging limits applied */ |
ef1429c0 DLM |
3974 | { "MTRON MSP-SATA*", NULL, ATA_HORKAGE_BRIDGE_OK }, |
3975 | { "BUFFALO HD-QSU2/R5", NULL, ATA_HORKAGE_BRIDGE_OK }, | |
9ce8e307 | 3976 | |
9062712f | 3977 | /* Devices which aren't very happy with higher link speeds */ |
ef1429c0 DLM |
3978 | { "WD My Book", NULL, ATA_HORKAGE_1_5_GBPS }, |
3979 | { "Seagate FreeAgent GoFlex", NULL, ATA_HORKAGE_1_5_GBPS }, | |
9062712f | 3980 | |
d0cb43b3 TH |
3981 | /* |
3982 | * Devices which choke on SETXFER. Applies only if both the | |
3983 | * device and controller are SATA. | |
3984 | */ | |
cd691876 | 3985 | { "PIONEER DVD-RW DVRTD08", NULL, ATA_HORKAGE_NOSETXFER }, |
3a25179e VL |
3986 | { "PIONEER DVD-RW DVRTD08A", NULL, ATA_HORKAGE_NOSETXFER }, |
3987 | { "PIONEER DVD-RW DVR-215", NULL, ATA_HORKAGE_NOSETXFER }, | |
cd691876 TH |
3988 | { "PIONEER DVD-RW DVR-212D", NULL, ATA_HORKAGE_NOSETXFER }, |
3989 | { "PIONEER DVD-RW DVR-216D", NULL, ATA_HORKAGE_NOSETXFER }, | |
d0cb43b3 | 3990 | |
b17e5729 | 3991 | /* Crucial BX100 SSD 500GB has broken LPM support */ |
3bf7b5d6 | 3992 | { "CT500BX100SSD1", NULL, ATA_HORKAGE_NOLPM }, |
b17e5729 | 3993 | |
d418ff56 HG |
3994 | /* 512GB MX100 with MU01 firmware has both queued TRIM and LPM issues */ |
3995 | { "Crucial_CT512MX100*", "MU01", ATA_HORKAGE_NO_NCQ_TRIM | | |
9c7be59f | 3996 | ATA_HORKAGE_ZERO_AFTER_TRIM | |
ef1429c0 | 3997 | ATA_HORKAGE_NOLPM }, |
d418ff56 HG |
3998 | /* 512GB MX100 with newer firmware has only LPM issues */ |
3999 | { "Crucial_CT512MX100*", NULL, ATA_HORKAGE_ZERO_AFTER_TRIM | | |
ef1429c0 | 4000 | ATA_HORKAGE_NOLPM }, |
9c7be59f | 4001 | |
62ac3f73 HG |
4002 | /* 480GB+ M500 SSDs have both queued TRIM and LPM issues */ |
4003 | { "Crucial_CT480M500*", NULL, ATA_HORKAGE_NO_NCQ_TRIM | | |
4004 | ATA_HORKAGE_ZERO_AFTER_TRIM | | |
ef1429c0 | 4005 | ATA_HORKAGE_NOLPM }, |
62ac3f73 HG |
4006 | { "Crucial_CT960M500*", NULL, ATA_HORKAGE_NO_NCQ_TRIM | |
4007 | ATA_HORKAGE_ZERO_AFTER_TRIM | | |
ef1429c0 | 4008 | ATA_HORKAGE_NOLPM }, |
62ac3f73 | 4009 | |
76936e9a | 4010 | /* These specific Samsung models/firmware-revs do not handle LPM well */ |
ef1429c0 DLM |
4011 | { "SAMSUNG MZMPC128HBFU-000MV", "CXM14M1Q", ATA_HORKAGE_NOLPM }, |
4012 | { "SAMSUNG SSD PM830 mSATA *", "CXM13D1Q", ATA_HORKAGE_NOLPM }, | |
4013 | { "SAMSUNG MZ7TD256HAFV-000L9", NULL, ATA_HORKAGE_NOLPM }, | |
4014 | { "SAMSUNG MZ7TE512HMHP-000L1", "EXT06L0Q", ATA_HORKAGE_NOLPM }, | |
b5b4d3a5 | 4015 | |
f78dea06 | 4016 | /* devices that don't properly handle queued TRIM commands */ |
136d769e | 4017 | { "Micron_M500IT_*", "MU01", ATA_HORKAGE_NO_NCQ_TRIM | |
ef1429c0 | 4018 | ATA_HORKAGE_ZERO_AFTER_TRIM }, |
243918be | 4019 | { "Micron_M500_*", NULL, ATA_HORKAGE_NO_NCQ_TRIM | |
ef1429c0 | 4020 | ATA_HORKAGE_ZERO_AFTER_TRIM }, |
ff7f53fb | 4021 | { "Crucial_CT*M500*", NULL, ATA_HORKAGE_NO_NCQ_TRIM | |
ef1429c0 | 4022 | ATA_HORKAGE_ZERO_AFTER_TRIM }, |
9051bd39 | 4023 | { "Micron_M5[15]0_*", "MU01", ATA_HORKAGE_NO_NCQ_TRIM | |
ef1429c0 | 4024 | ATA_HORKAGE_ZERO_AFTER_TRIM }, |
ff7f53fb | 4025 | { "Crucial_CT*M550*", "MU01", ATA_HORKAGE_NO_NCQ_TRIM | |
ef1429c0 | 4026 | ATA_HORKAGE_ZERO_AFTER_TRIM }, |
ff7f53fb | 4027 | { "Crucial_CT*MX100*", "MU01", ATA_HORKAGE_NO_NCQ_TRIM | |
ef1429c0 | 4028 | ATA_HORKAGE_ZERO_AFTER_TRIM }, |
53997522 CL |
4029 | { "Samsung SSD 840 EVO*", NULL, ATA_HORKAGE_NO_NCQ_TRIM | |
4030 | ATA_HORKAGE_NO_DMA_LOG | | |
ef1429c0 | 4031 | ATA_HORKAGE_ZERO_AFTER_TRIM }, |
ca6bfcb2 | 4032 | { "Samsung SSD 840*", NULL, ATA_HORKAGE_NO_NCQ_TRIM | |
ef1429c0 | 4033 | ATA_HORKAGE_ZERO_AFTER_TRIM }, |
ca6bfcb2 | 4034 | { "Samsung SSD 850*", NULL, ATA_HORKAGE_NO_NCQ_TRIM | |
ef1429c0 | 4035 | ATA_HORKAGE_ZERO_AFTER_TRIM }, |
8a6430ab | 4036 | { "Samsung SSD 860*", NULL, ATA_HORKAGE_NO_NCQ_TRIM | |
7a8526a5 | 4037 | ATA_HORKAGE_ZERO_AFTER_TRIM | |
ef1429c0 | 4038 | ATA_HORKAGE_NO_NCQ_ON_ATI }, |
8a6430ab | 4039 | { "Samsung SSD 870*", NULL, ATA_HORKAGE_NO_NCQ_TRIM | |
7a8526a5 | 4040 | ATA_HORKAGE_ZERO_AFTER_TRIM | |
ef1429c0 | 4041 | ATA_HORKAGE_NO_NCQ_ON_ATI }, |
7a7184b0 | 4042 | { "FCCT*M500*", NULL, ATA_HORKAGE_NO_NCQ_TRIM | |
ef1429c0 | 4043 | ATA_HORKAGE_ZERO_AFTER_TRIM }, |
e61f7d1c | 4044 | |
cda57b1b | 4045 | /* devices that don't properly handle TRIM commands */ |
ef1429c0 DLM |
4046 | { "SuperSSpeed S238*", NULL, ATA_HORKAGE_NOTRIM }, |
4047 | { "M88V29*", NULL, ATA_HORKAGE_NOTRIM }, | |
cda57b1b | 4048 | |
e61f7d1c MP |
4049 | /* |
4050 | * As defined, the DRAT (Deterministic Read After Trim) and RZAT | |
4051 | * (Return Zero After Trim) flags in the ATA Command Set are | |
4052 | * unreliable in the sense that they only define what happens if | |
4053 | * the device successfully executed the DSM TRIM command. TRIM | |
4054 | * is only advisory, however, and the device is free to silently | |
4055 | * ignore all or parts of the request. | |
4056 | * | |
4057 | * Whitelist drives that are known to reliably return zeroes | |
4058 | * after TRIM. | |
4059 | */ | |
4060 | ||
4061 | /* | |
4062 | * The intel 510 drive has buggy DRAT/RZAT. Explicitly exclude | |
4063 | * that model before whitelisting all other intel SSDs. | |
4064 | */ | |
ef1429c0 DLM |
4065 | { "INTEL*SSDSC2MH*", NULL, 0 }, |
4066 | ||
4067 | { "Micron*", NULL, ATA_HORKAGE_ZERO_AFTER_TRIM }, | |
4068 | { "Crucial*", NULL, ATA_HORKAGE_ZERO_AFTER_TRIM }, | |
4069 | { "INTEL*SSD*", NULL, ATA_HORKAGE_ZERO_AFTER_TRIM }, | |
4070 | { "SSD*INTEL*", NULL, ATA_HORKAGE_ZERO_AFTER_TRIM }, | |
4071 | { "Samsung*SSD*", NULL, ATA_HORKAGE_ZERO_AFTER_TRIM }, | |
4072 | { "SAMSUNG*SSD*", NULL, ATA_HORKAGE_ZERO_AFTER_TRIM }, | |
4073 | { "SAMSUNG*MZ7KM*", NULL, ATA_HORKAGE_ZERO_AFTER_TRIM }, | |
4074 | { "ST[1248][0248]0[FH]*", NULL, ATA_HORKAGE_ZERO_AFTER_TRIM }, | |
f78dea06 | 4075 | |
ecd75ad5 TH |
4076 | /* |
4077 | * Some WD SATA-I drives spin up and down erratically when the link | |
4078 | * is put into the slumber mode. We don't have full list of the | |
4079 | * affected devices. Disable LPM if the device matches one of the | |
4080 | * known prefixes and is SATA-1. As a side effect LPM partial is | |
4081 | * lost too. | |
4082 | * | |
4083 | * https://bugzilla.kernel.org/show_bug.cgi?id=57211 | |
4084 | */ | |
4085 | { "WDC WD800JD-*", NULL, ATA_HORKAGE_WD_BROKEN_LPM }, | |
4086 | { "WDC WD1200JD-*", NULL, ATA_HORKAGE_WD_BROKEN_LPM }, | |
4087 | { "WDC WD1600JD-*", NULL, ATA_HORKAGE_WD_BROKEN_LPM }, | |
4088 | { "WDC WD2000JD-*", NULL, ATA_HORKAGE_WD_BROKEN_LPM }, | |
4089 | { "WDC WD2500JD-*", NULL, ATA_HORKAGE_WD_BROKEN_LPM }, | |
4090 | { "WDC WD3000JD-*", NULL, ATA_HORKAGE_WD_BROKEN_LPM }, | |
4091 | { "WDC WD3200JD-*", NULL, ATA_HORKAGE_WD_BROKEN_LPM }, | |
4092 | ||
ac9f0c81 AL |
4093 | /* |
4094 | * This sata dom device goes on a walkabout when the ATA_LOG_DIRECTORY | |
4095 | * log page is accessed. Ensure we never ask for this log page with | |
4096 | * these devices. | |
4097 | */ | |
4098 | { "SATADOM-ML 3ME", NULL, ATA_HORKAGE_NO_LOG_DIR }, | |
4099 | ||
6919a0a6 AC |
4100 | /* End Marker */ |
4101 | { } | |
1da177e4 | 4102 | }; |
2e9edbf8 | 4103 | |
75683fe7 | 4104 | static unsigned long ata_dev_blacklisted(const struct ata_device *dev) |
1da177e4 | 4105 | { |
8bfa79fc TH |
4106 | unsigned char model_num[ATA_ID_PROD_LEN + 1]; |
4107 | unsigned char model_rev[ATA_ID_FW_REV_LEN + 1]; | |
6919a0a6 | 4108 | const struct ata_blacklist_entry *ad = ata_device_blacklist; |
3a778275 | 4109 | |
8bfa79fc TH |
4110 | ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num)); |
4111 | ata_id_c_string(dev->id, model_rev, ATA_ID_FW_REV, sizeof(model_rev)); | |
1da177e4 | 4112 | |
6919a0a6 | 4113 | while (ad->model_num) { |
1c402799 | 4114 | if (glob_match(ad->model_num, model_num)) { |
6919a0a6 AC |
4115 | if (ad->model_rev == NULL) |
4116 | return ad->horkage; | |
1c402799 | 4117 | if (glob_match(ad->model_rev, model_rev)) |
6919a0a6 | 4118 | return ad->horkage; |
f4b15fef | 4119 | } |
6919a0a6 | 4120 | ad++; |
f4b15fef | 4121 | } |
1da177e4 LT |
4122 | return 0; |
4123 | } | |
4124 | ||
6919a0a6 AC |
4125 | static int ata_dma_blacklisted(const struct ata_device *dev) |
4126 | { | |
4127 | /* We don't support polling DMA. | |
4128 | * DMA blacklist those ATAPI devices with CDB-intr (and use PIO) | |
4129 | * if the LLDD handles only interrupts in the HSM_ST_LAST state. | |
4130 | */ | |
9af5c9c9 | 4131 | if ((dev->link->ap->flags & ATA_FLAG_PIO_POLLING) && |
6919a0a6 AC |
4132 | (dev->flags & ATA_DFLAG_CDB_INTR)) |
4133 | return 1; | |
75683fe7 | 4134 | return (dev->horkage & ATA_HORKAGE_NODMA) ? 1 : 0; |
6919a0a6 AC |
4135 | } |
4136 | ||
6bbfd53d AC |
4137 | /** |
4138 | * ata_is_40wire - check drive side detection | |
4139 | * @dev: device | |
4140 | * | |
4141 | * Perform drive side detection decoding, allowing for device vendors | |
4142 | * who can't follow the documentation. | |
4143 | */ | |
4144 | ||
4145 | static int ata_is_40wire(struct ata_device *dev) | |
4146 | { | |
4147 | if (dev->horkage & ATA_HORKAGE_IVB) | |
4148 | return ata_drive_40wire_relaxed(dev->id); | |
4149 | return ata_drive_40wire(dev->id); | |
4150 | } | |
4151 | ||
15a5551c AC |
4152 | /** |
4153 | * cable_is_40wire - 40/80/SATA decider | |
4154 | * @ap: port to consider | |
4155 | * | |
4156 | * This function encapsulates the policy for speed management | |
4157 | * in one place. At the moment we don't cache the result but | |
4158 | * there is a good case for setting ap->cbl to the result when | |
4159 | * we are called with unknown cables (and figuring out if it | |
4160 | * impacts hotplug at all). | |
4161 | * | |
4162 | * Return 1 if the cable appears to be 40 wire. | |
4163 | */ | |
4164 | ||
4165 | static int cable_is_40wire(struct ata_port *ap) | |
4166 | { | |
4167 | struct ata_link *link; | |
4168 | struct ata_device *dev; | |
4169 | ||
4a9c7b33 | 4170 | /* If the controller thinks we are 40 wire, we are. */ |
15a5551c AC |
4171 | if (ap->cbl == ATA_CBL_PATA40) |
4172 | return 1; | |
4a9c7b33 TH |
4173 | |
4174 | /* If the controller thinks we are 80 wire, we are. */ | |
15a5551c AC |
4175 | if (ap->cbl == ATA_CBL_PATA80 || ap->cbl == ATA_CBL_SATA) |
4176 | return 0; | |
4a9c7b33 TH |
4177 | |
4178 | /* If the system is known to be 40 wire short cable (eg | |
4179 | * laptop), then we allow 80 wire modes even if the drive | |
4180 | * isn't sure. | |
4181 | */ | |
f792068e AC |
4182 | if (ap->cbl == ATA_CBL_PATA40_SHORT) |
4183 | return 0; | |
4a9c7b33 TH |
4184 | |
4185 | /* If the controller doesn't know, we scan. | |
4186 | * | |
4187 | * Note: We look for all 40 wire detects at this point. Any | |
4188 | * 80 wire detect is taken to be 80 wire cable because | |
4189 | * - in many setups only the one drive (slave if present) will | |
4190 | * give a valid detect | |
4191 | * - if you have a non detect capable drive you don't want it | |
4192 | * to colour the choice | |
4193 | */ | |
1eca4365 TH |
4194 | ata_for_each_link(link, ap, EDGE) { |
4195 | ata_for_each_dev(dev, link, ENABLED) { | |
4196 | if (!ata_is_40wire(dev)) | |
15a5551c AC |
4197 | return 0; |
4198 | } | |
4199 | } | |
4200 | return 1; | |
4201 | } | |
4202 | ||
a6d5a51c TH |
4203 | /** |
4204 | * ata_dev_xfermask - Compute supported xfermask of the given device | |
a6d5a51c TH |
4205 | * @dev: Device to compute xfermask for |
4206 | * | |
acf356b1 TH |
4207 | * Compute supported xfermask of @dev and store it in |
4208 | * dev->*_mask. This function is responsible for applying all | |
4209 | * known limits including host controller limits, device | |
4210 | * blacklist, etc... | |
a6d5a51c TH |
4211 | * |
4212 | * LOCKING: | |
4213 | * None. | |
a6d5a51c | 4214 | */ |
3373efd8 | 4215 | static void ata_dev_xfermask(struct ata_device *dev) |
1da177e4 | 4216 | { |
9af5c9c9 TH |
4217 | struct ata_link *link = dev->link; |
4218 | struct ata_port *ap = link->ap; | |
cca3974e | 4219 | struct ata_host *host = ap->host; |
f0a6d77b | 4220 | unsigned int xfer_mask; |
1da177e4 | 4221 | |
37deecb5 | 4222 | /* controller modes available */ |
565083e1 TH |
4223 | xfer_mask = ata_pack_xfermask(ap->pio_mask, |
4224 | ap->mwdma_mask, ap->udma_mask); | |
4225 | ||
8343f889 | 4226 | /* drive modes available */ |
37deecb5 TH |
4227 | xfer_mask &= ata_pack_xfermask(dev->pio_mask, |
4228 | dev->mwdma_mask, dev->udma_mask); | |
4229 | xfer_mask &= ata_id_xfermask(dev->id); | |
565083e1 | 4230 | |
b352e57d AC |
4231 | /* |
4232 | * CFA Advanced TrueIDE timings are not allowed on a shared | |
4233 | * cable | |
4234 | */ | |
4235 | if (ata_dev_pair(dev)) { | |
4236 | /* No PIO5 or PIO6 */ | |
4237 | xfer_mask &= ~(0x03 << (ATA_SHIFT_PIO + 5)); | |
4238 | /* No MWDMA3 or MWDMA 4 */ | |
4239 | xfer_mask &= ~(0x03 << (ATA_SHIFT_MWDMA + 3)); | |
4240 | } | |
4241 | ||
37deecb5 TH |
4242 | if (ata_dma_blacklisted(dev)) { |
4243 | xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA); | |
a9a79dfe JP |
4244 | ata_dev_warn(dev, |
4245 | "device is on DMA blacklist, disabling DMA\n"); | |
37deecb5 | 4246 | } |
a6d5a51c | 4247 | |
14d66ab7 | 4248 | if ((host->flags & ATA_HOST_SIMPLEX) && |
2dcb407e | 4249 | host->simplex_claimed && host->simplex_claimed != ap) { |
37deecb5 | 4250 | xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA); |
a9a79dfe JP |
4251 | ata_dev_warn(dev, |
4252 | "simplex DMA is claimed by other device, disabling DMA\n"); | |
5444a6f4 | 4253 | } |
565083e1 | 4254 | |
e424675f JG |
4255 | if (ap->flags & ATA_FLAG_NO_IORDY) |
4256 | xfer_mask &= ata_pio_mask_no_iordy(dev); | |
4257 | ||
5444a6f4 | 4258 | if (ap->ops->mode_filter) |
a76b62ca | 4259 | xfer_mask = ap->ops->mode_filter(dev, xfer_mask); |
5444a6f4 | 4260 | |
8343f889 RH |
4261 | /* Apply cable rule here. Don't apply it early because when |
4262 | * we handle hot plug the cable type can itself change. | |
4263 | * Check this last so that we know if the transfer rate was | |
4264 | * solely limited by the cable. | |
4265 | * Unknown or 80 wire cables reported host side are checked | |
4266 | * drive side as well. Cases where we know a 40wire cable | |
4267 | * is used safely for 80 are not checked here. | |
4268 | */ | |
4269 | if (xfer_mask & (0xF8 << ATA_SHIFT_UDMA)) | |
4270 | /* UDMA/44 or higher would be available */ | |
15a5551c | 4271 | if (cable_is_40wire(ap)) { |
a9a79dfe JP |
4272 | ata_dev_warn(dev, |
4273 | "limited to UDMA/33 due to 40-wire cable\n"); | |
8343f889 RH |
4274 | xfer_mask &= ~(0xF8 << ATA_SHIFT_UDMA); |
4275 | } | |
4276 | ||
565083e1 TH |
4277 | ata_unpack_xfermask(xfer_mask, &dev->pio_mask, |
4278 | &dev->mwdma_mask, &dev->udma_mask); | |
1da177e4 LT |
4279 | } |
4280 | ||
1da177e4 LT |
4281 | /** |
4282 | * ata_dev_set_xfermode - Issue SET FEATURES - XFER MODE command | |
1da177e4 LT |
4283 | * @dev: Device to which command will be sent |
4284 | * | |
780a87f7 JG |
4285 | * Issue SET FEATURES - XFER MODE command to device @dev |
4286 | * on port @ap. | |
4287 | * | |
1da177e4 | 4288 | * LOCKING: |
0cba632b | 4289 | * PCI/etc. bus probe sem. |
83206a29 TH |
4290 | * |
4291 | * RETURNS: | |
4292 | * 0 on success, AC_ERR_* mask otherwise. | |
1da177e4 LT |
4293 | */ |
4294 | ||
3373efd8 | 4295 | static unsigned int ata_dev_set_xfermode(struct ata_device *dev) |
1da177e4 | 4296 | { |
a0123703 | 4297 | struct ata_taskfile tf; |
83206a29 | 4298 | unsigned int err_mask; |
1da177e4 LT |
4299 | |
4300 | /* set up set-features taskfile */ | |
4633778b | 4301 | ata_dev_dbg(dev, "set features - xfer mode\n"); |
1da177e4 | 4302 | |
464cf177 TH |
4303 | /* Some controllers and ATAPI devices show flaky interrupt |
4304 | * behavior after setting xfer mode. Use polling instead. | |
4305 | */ | |
3373efd8 | 4306 | ata_tf_init(dev, &tf); |
a0123703 TH |
4307 | tf.command = ATA_CMD_SET_FEATURES; |
4308 | tf.feature = SETFEATURES_XFER; | |
464cf177 | 4309 | tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_POLLING; |
a0123703 | 4310 | tf.protocol = ATA_PROT_NODATA; |
b9f8ab2d | 4311 | /* If we are using IORDY we must send the mode setting command */ |
11b7becc JG |
4312 | if (ata_pio_need_iordy(dev)) |
4313 | tf.nsect = dev->xfer_mode; | |
b9f8ab2d AC |
4314 | /* If the device has IORDY and the controller does not - turn it off */ |
4315 | else if (ata_id_has_iordy(dev->id)) | |
11b7becc | 4316 | tf.nsect = 0x01; |
b9f8ab2d AC |
4317 | else /* In the ancient relic department - skip all of this */ |
4318 | return 0; | |
1da177e4 | 4319 | |
d531be2c MP |
4320 | /* On some disks, this command causes spin-up, so we need longer timeout */ |
4321 | err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 15000); | |
9f45cbd3 | 4322 | |
9f45cbd3 KCA |
4323 | return err_mask; |
4324 | } | |
1152b261 | 4325 | |
9f45cbd3 | 4326 | /** |
218f3d30 | 4327 | * ata_dev_set_feature - Issue SET FEATURES - SATA FEATURES |
9f45cbd3 KCA |
4328 | * @dev: Device to which command will be sent |
4329 | * @enable: Whether to enable or disable the feature | |
218f3d30 | 4330 | * @feature: The sector count represents the feature to set |
9f45cbd3 KCA |
4331 | * |
4332 | * Issue SET FEATURES - SATA FEATURES command to device @dev | |
218f3d30 | 4333 | * on port @ap with sector count |
9f45cbd3 KCA |
4334 | * |
4335 | * LOCKING: | |
4336 | * PCI/etc. bus probe sem. | |
4337 | * | |
4338 | * RETURNS: | |
4339 | * 0 on success, AC_ERR_* mask otherwise. | |
4340 | */ | |
1152b261 | 4341 | unsigned int ata_dev_set_feature(struct ata_device *dev, u8 enable, u8 feature) |
9f45cbd3 KCA |
4342 | { |
4343 | struct ata_taskfile tf; | |
4344 | unsigned int err_mask; | |
61176eed | 4345 | unsigned int timeout = 0; |
9f45cbd3 KCA |
4346 | |
4347 | /* set up set-features taskfile */ | |
4633778b | 4348 | ata_dev_dbg(dev, "set features - SATA features\n"); |
9f45cbd3 KCA |
4349 | |
4350 | ata_tf_init(dev, &tf); | |
4351 | tf.command = ATA_CMD_SET_FEATURES; | |
4352 | tf.feature = enable; | |
4353 | tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
4354 | tf.protocol = ATA_PROT_NODATA; | |
218f3d30 | 4355 | tf.nsect = feature; |
9f45cbd3 | 4356 | |
974e0a45 DLM |
4357 | if (enable == SETFEATURES_SPINUP) |
4358 | timeout = ata_probe_timeout ? | |
4359 | ata_probe_timeout * 1000 : SETFEATURES_SPINUP_TIMEOUT; | |
4360 | err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, timeout); | |
1da177e4 | 4361 | |
83206a29 | 4362 | return err_mask; |
1da177e4 | 4363 | } |
633de4cc | 4364 | EXPORT_SYMBOL_GPL(ata_dev_set_feature); |
1da177e4 | 4365 | |
8bf62ece AL |
4366 | /** |
4367 | * ata_dev_init_params - Issue INIT DEV PARAMS command | |
8bf62ece | 4368 | * @dev: Device to which command will be sent |
e2a7f77a RD |
4369 | * @heads: Number of heads (taskfile parameter) |
4370 | * @sectors: Number of sectors (taskfile parameter) | |
8bf62ece AL |
4371 | * |
4372 | * LOCKING: | |
6aff8f1f TH |
4373 | * Kernel thread context (may sleep) |
4374 | * | |
4375 | * RETURNS: | |
4376 | * 0 on success, AC_ERR_* mask otherwise. | |
8bf62ece | 4377 | */ |
3373efd8 TH |
4378 | static unsigned int ata_dev_init_params(struct ata_device *dev, |
4379 | u16 heads, u16 sectors) | |
8bf62ece | 4380 | { |
a0123703 | 4381 | struct ata_taskfile tf; |
6aff8f1f | 4382 | unsigned int err_mask; |
8bf62ece AL |
4383 | |
4384 | /* Number of sectors per track 1-255. Number of heads 1-16 */ | |
4385 | if (sectors < 1 || sectors > 255 || heads < 1 || heads > 16) | |
00b6f5e9 | 4386 | return AC_ERR_INVALID; |
8bf62ece AL |
4387 | |
4388 | /* set up init dev params taskfile */ | |
4633778b | 4389 | ata_dev_dbg(dev, "init dev params \n"); |
8bf62ece | 4390 | |
3373efd8 | 4391 | ata_tf_init(dev, &tf); |
a0123703 TH |
4392 | tf.command = ATA_CMD_INIT_DEV_PARAMS; |
4393 | tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
4394 | tf.protocol = ATA_PROT_NODATA; | |
4395 | tf.nsect = sectors; | |
4396 | tf.device |= (heads - 1) & 0x0f; /* max head = num. of heads - 1 */ | |
8bf62ece | 4397 | |
2b789108 | 4398 | err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0); |
18b2466c AC |
4399 | /* A clean abort indicates an original or just out of spec drive |
4400 | and we should continue as we issue the setup based on the | |
4401 | drive reported working geometry */ | |
efcef265 | 4402 | if (err_mask == AC_ERR_DEV && (tf.error & ATA_ABORTED)) |
18b2466c | 4403 | err_mask = 0; |
8bf62ece | 4404 | |
6aff8f1f | 4405 | return err_mask; |
8bf62ece AL |
4406 | } |
4407 | ||
1da177e4 | 4408 | /** |
5895ef9a | 4409 | * atapi_check_dma - Check whether ATAPI DMA can be supported |
1da177e4 LT |
4410 | * @qc: Metadata associated with taskfile to check |
4411 | * | |
780a87f7 JG |
4412 | * Allow low-level driver to filter ATA PACKET commands, returning |
4413 | * a status indicating whether or not it is OK to use DMA for the | |
4414 | * supplied PACKET command. | |
4415 | * | |
1da177e4 | 4416 | * LOCKING: |
624d5c51 TH |
4417 | * spin_lock_irqsave(host lock) |
4418 | * | |
4419 | * RETURNS: 0 when ATAPI DMA can be used | |
4420 | * nonzero otherwise | |
4421 | */ | |
5895ef9a | 4422 | int atapi_check_dma(struct ata_queued_cmd *qc) |
624d5c51 TH |
4423 | { |
4424 | struct ata_port *ap = qc->ap; | |
71601958 | 4425 | |
624d5c51 TH |
4426 | /* Don't allow DMA if it isn't multiple of 16 bytes. Quite a |
4427 | * few ATAPI devices choke on such DMA requests. | |
4428 | */ | |
6a87e42e TH |
4429 | if (!(qc->dev->horkage & ATA_HORKAGE_ATAPI_MOD16_DMA) && |
4430 | unlikely(qc->nbytes & 15)) | |
624d5c51 | 4431 | return 1; |
e2cec771 | 4432 | |
624d5c51 TH |
4433 | if (ap->ops->check_atapi_dma) |
4434 | return ap->ops->check_atapi_dma(qc); | |
e2cec771 | 4435 | |
624d5c51 TH |
4436 | return 0; |
4437 | } | |
1da177e4 | 4438 | |
624d5c51 TH |
4439 | /** |
4440 | * ata_std_qc_defer - Check whether a qc needs to be deferred | |
4441 | * @qc: ATA command in question | |
4442 | * | |
4443 | * Non-NCQ commands cannot run with any other command, NCQ or | |
4444 | * not. As upper layer only knows the queue depth, we are | |
4445 | * responsible for maintaining exclusion. This function checks | |
4446 | * whether a new command @qc can be issued. | |
4447 | * | |
4448 | * LOCKING: | |
4449 | * spin_lock_irqsave(host lock) | |
4450 | * | |
4451 | * RETURNS: | |
4452 | * ATA_DEFER_* if deferring is needed, 0 otherwise. | |
4453 | */ | |
4454 | int ata_std_qc_defer(struct ata_queued_cmd *qc) | |
4455 | { | |
4456 | struct ata_link *link = qc->dev->link; | |
e2cec771 | 4457 | |
179b310a | 4458 | if (ata_is_ncq(qc->tf.protocol)) { |
624d5c51 TH |
4459 | if (!ata_tag_valid(link->active_tag)) |
4460 | return 0; | |
4461 | } else { | |
4462 | if (!ata_tag_valid(link->active_tag) && !link->sactive) | |
4463 | return 0; | |
4464 | } | |
e2cec771 | 4465 | |
624d5c51 TH |
4466 | return ATA_DEFER_LINK; |
4467 | } | |
a52fbcfc | 4468 | EXPORT_SYMBOL_GPL(ata_std_qc_defer); |
6912ccd5 | 4469 | |
95364f36 JS |
4470 | enum ata_completion_errors ata_noop_qc_prep(struct ata_queued_cmd *qc) |
4471 | { | |
4472 | return AC_ERR_OK; | |
4473 | } | |
a52fbcfc | 4474 | EXPORT_SYMBOL_GPL(ata_noop_qc_prep); |
1da177e4 | 4475 | |
624d5c51 TH |
4476 | /** |
4477 | * ata_sg_init - Associate command with scatter-gather table. | |
4478 | * @qc: Command to be associated | |
4479 | * @sg: Scatter-gather table. | |
4480 | * @n_elem: Number of elements in s/g table. | |
4481 | * | |
4482 | * Initialize the data-related elements of queued_cmd @qc | |
4483 | * to point to a scatter-gather table @sg, containing @n_elem | |
4484 | * elements. | |
4485 | * | |
4486 | * LOCKING: | |
4487 | * spin_lock_irqsave(host lock) | |
4488 | */ | |
4489 | void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, | |
4490 | unsigned int n_elem) | |
4491 | { | |
4492 | qc->sg = sg; | |
4493 | qc->n_elem = n_elem; | |
4494 | qc->cursg = qc->sg; | |
4495 | } | |
bb5cb290 | 4496 | |
2874d5ee GU |
4497 | #ifdef CONFIG_HAS_DMA |
4498 | ||
4499 | /** | |
4500 | * ata_sg_clean - Unmap DMA memory associated with command | |
4501 | * @qc: Command containing DMA memory to be released | |
4502 | * | |
4503 | * Unmap all mapped DMA memory associated with this command. | |
4504 | * | |
4505 | * LOCKING: | |
4506 | * spin_lock_irqsave(host lock) | |
4507 | */ | |
af27e01c | 4508 | static void ata_sg_clean(struct ata_queued_cmd *qc) |
2874d5ee GU |
4509 | { |
4510 | struct ata_port *ap = qc->ap; | |
4511 | struct scatterlist *sg = qc->sg; | |
4512 | int dir = qc->dma_dir; | |
4513 | ||
4514 | WARN_ON_ONCE(sg == NULL); | |
4515 | ||
2874d5ee GU |
4516 | if (qc->n_elem) |
4517 | dma_unmap_sg(ap->dev, sg, qc->orig_n_elem, dir); | |
4518 | ||
4519 | qc->flags &= ~ATA_QCFLAG_DMAMAP; | |
4520 | qc->sg = NULL; | |
4521 | } | |
4522 | ||
624d5c51 TH |
4523 | /** |
4524 | * ata_sg_setup - DMA-map the scatter-gather table associated with a command. | |
4525 | * @qc: Command with scatter-gather table to be mapped. | |
4526 | * | |
4527 | * DMA-map the scatter-gather table associated with queued_cmd @qc. | |
4528 | * | |
4529 | * LOCKING: | |
4530 | * spin_lock_irqsave(host lock) | |
4531 | * | |
4532 | * RETURNS: | |
4533 | * Zero on success, negative on error. | |
4534 | * | |
4535 | */ | |
4536 | static int ata_sg_setup(struct ata_queued_cmd *qc) | |
4537 | { | |
4538 | struct ata_port *ap = qc->ap; | |
4539 | unsigned int n_elem; | |
1da177e4 | 4540 | |
624d5c51 TH |
4541 | n_elem = dma_map_sg(ap->dev, qc->sg, qc->n_elem, qc->dma_dir); |
4542 | if (n_elem < 1) | |
4543 | return -1; | |
bb5cb290 | 4544 | |
5825627c | 4545 | qc->orig_n_elem = qc->n_elem; |
624d5c51 TH |
4546 | qc->n_elem = n_elem; |
4547 | qc->flags |= ATA_QCFLAG_DMAMAP; | |
1da177e4 | 4548 | |
624d5c51 | 4549 | return 0; |
1da177e4 LT |
4550 | } |
4551 | ||
2874d5ee GU |
4552 | #else /* !CONFIG_HAS_DMA */ |
4553 | ||
4554 | static inline void ata_sg_clean(struct ata_queued_cmd *qc) {} | |
4555 | static inline int ata_sg_setup(struct ata_queued_cmd *qc) { return -1; } | |
4556 | ||
4557 | #endif /* !CONFIG_HAS_DMA */ | |
4558 | ||
624d5c51 TH |
4559 | /** |
4560 | * swap_buf_le16 - swap halves of 16-bit words in place | |
4561 | * @buf: Buffer to swap | |
4562 | * @buf_words: Number of 16-bit words in buffer. | |
4563 | * | |
4564 | * Swap halves of 16-bit words if needed to convert from | |
4565 | * little-endian byte order to native cpu byte order, or | |
4566 | * vice-versa. | |
4567 | * | |
4568 | * LOCKING: | |
4569 | * Inherited from caller. | |
4570 | */ | |
4571 | void swap_buf_le16(u16 *buf, unsigned int buf_words) | |
8061f5f0 | 4572 | { |
624d5c51 TH |
4573 | #ifdef __BIG_ENDIAN |
4574 | unsigned int i; | |
8061f5f0 | 4575 | |
624d5c51 TH |
4576 | for (i = 0; i < buf_words; i++) |
4577 | buf[i] = le16_to_cpu(buf[i]); | |
4578 | #endif /* __BIG_ENDIAN */ | |
8061f5f0 TH |
4579 | } |
4580 | ||
8a8bc223 TH |
4581 | /** |
4582 | * ata_qc_free - free unused ata_queued_cmd | |
4583 | * @qc: Command to complete | |
4584 | * | |
4585 | * Designed to free unused ata_queued_cmd object | |
4586 | * in case something prevents using it. | |
4587 | * | |
4588 | * LOCKING: | |
4589 | * spin_lock_irqsave(host lock) | |
4590 | */ | |
4591 | void ata_qc_free(struct ata_queued_cmd *qc) | |
4592 | { | |
8a8bc223 | 4593 | qc->flags = 0; |
4f1a22ee | 4594 | if (ata_tag_valid(qc->tag)) |
8a8bc223 | 4595 | qc->tag = ATA_TAG_POISON; |
8a8bc223 TH |
4596 | } |
4597 | ||
76014427 | 4598 | void __ata_qc_complete(struct ata_queued_cmd *qc) |
1da177e4 | 4599 | { |
a1104016 JL |
4600 | struct ata_port *ap; |
4601 | struct ata_link *link; | |
dedaf2b0 | 4602 | |
efcb3cf7 TH |
4603 | WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ |
4604 | WARN_ON_ONCE(!(qc->flags & ATA_QCFLAG_ACTIVE)); | |
a1104016 JL |
4605 | ap = qc->ap; |
4606 | link = qc->dev->link; | |
1da177e4 LT |
4607 | |
4608 | if (likely(qc->flags & ATA_QCFLAG_DMAMAP)) | |
4609 | ata_sg_clean(qc); | |
4610 | ||
7401abf2 | 4611 | /* command should be marked inactive atomically with qc completion */ |
179b310a | 4612 | if (ata_is_ncq(qc->tf.protocol)) { |
4e5b6260 | 4613 | link->sactive &= ~(1 << qc->hw_tag); |
da917d69 TH |
4614 | if (!link->sactive) |
4615 | ap->nr_active_links--; | |
4616 | } else { | |
9af5c9c9 | 4617 | link->active_tag = ATA_TAG_POISON; |
da917d69 TH |
4618 | ap->nr_active_links--; |
4619 | } | |
4620 | ||
4621 | /* clear exclusive status */ | |
4622 | if (unlikely(qc->flags & ATA_QCFLAG_CLEAR_EXCL && | |
4623 | ap->excl_link == link)) | |
4624 | ap->excl_link = NULL; | |
7401abf2 | 4625 | |
3f3791d3 AL |
4626 | /* atapi: mark qc as inactive to prevent the interrupt handler |
4627 | * from completing the command twice later, before the error handler | |
4628 | * is called. (when rc != 0 and atapi request sense is needed) | |
4629 | */ | |
4630 | qc->flags &= ~ATA_QCFLAG_ACTIVE; | |
e3ed8939 | 4631 | ap->qc_active &= ~(1ULL << qc->tag); |
3f3791d3 | 4632 | |
1da177e4 | 4633 | /* call completion callback */ |
77853bf2 | 4634 | qc->complete_fn(qc); |
1da177e4 LT |
4635 | } |
4636 | ||
39599a53 TH |
4637 | static void fill_result_tf(struct ata_queued_cmd *qc) |
4638 | { | |
4639 | struct ata_port *ap = qc->ap; | |
4640 | ||
39599a53 | 4641 | qc->result_tf.flags = qc->tf.flags; |
22183bf5 | 4642 | ap->ops->qc_fill_rtf(qc); |
39599a53 TH |
4643 | } |
4644 | ||
00115e0f TH |
4645 | static void ata_verify_xfer(struct ata_queued_cmd *qc) |
4646 | { | |
4647 | struct ata_device *dev = qc->dev; | |
4648 | ||
eb0effdf | 4649 | if (!ata_is_data(qc->tf.protocol)) |
00115e0f TH |
4650 | return; |
4651 | ||
4652 | if ((dev->mwdma_mask || dev->udma_mask) && ata_is_pio(qc->tf.protocol)) | |
4653 | return; | |
4654 | ||
4655 | dev->flags &= ~ATA_DFLAG_DUBIOUS_XFER; | |
4656 | } | |
4657 | ||
f686bcb8 TH |
4658 | /** |
4659 | * ata_qc_complete - Complete an active ATA command | |
4660 | * @qc: Command to complete | |
f686bcb8 | 4661 | * |
1aadf5c3 TH |
4662 | * Indicate to the mid and upper layers that an ATA command has |
4663 | * completed, with either an ok or not-ok status. | |
4664 | * | |
4665 | * Refrain from calling this function multiple times when | |
4666 | * successfully completing multiple NCQ commands. | |
4667 | * ata_qc_complete_multiple() should be used instead, which will | |
4668 | * properly update IRQ expect state. | |
f686bcb8 TH |
4669 | * |
4670 | * LOCKING: | |
cca3974e | 4671 | * spin_lock_irqsave(host lock) |
f686bcb8 TH |
4672 | */ |
4673 | void ata_qc_complete(struct ata_queued_cmd *qc) | |
4674 | { | |
4675 | struct ata_port *ap = qc->ap; | |
4676 | ||
eb25cb99 | 4677 | /* Trigger the LED (if available) */ |
d1ed7c55 | 4678 | ledtrig_disk_activity(!!(qc->tf.flags & ATA_TFLAG_WRITE)); |
eb25cb99 | 4679 | |
f686bcb8 TH |
4680 | /* XXX: New EH and old EH use different mechanisms to |
4681 | * synchronize EH with regular execution path. | |
4682 | * | |
4683 | * In new EH, a failed qc is marked with ATA_QCFLAG_FAILED. | |
4684 | * Normal execution path is responsible for not accessing a | |
4685 | * failed qc. libata core enforces the rule by returning NULL | |
4686 | * from ata_qc_from_tag() for failed qcs. | |
4687 | * | |
4688 | * Old EH depends on ata_qc_complete() nullifying completion | |
4689 | * requests if ATA_QCFLAG_EH_SCHEDULED is set. Old EH does | |
4690 | * not synchronize with interrupt handler. Only PIO task is | |
4691 | * taken care of. | |
4692 | */ | |
4693 | if (ap->ops->error_handler) { | |
4dbfa39b TH |
4694 | struct ata_device *dev = qc->dev; |
4695 | struct ata_eh_info *ehi = &dev->link->eh_info; | |
4696 | ||
f686bcb8 TH |
4697 | if (unlikely(qc->err_mask)) |
4698 | qc->flags |= ATA_QCFLAG_FAILED; | |
4699 | ||
f08dc1ac TH |
4700 | /* |
4701 | * Finish internal commands without any further processing | |
4702 | * and always with the result TF filled. | |
4703 | */ | |
4704 | if (unlikely(ata_tag_internal(qc->tag))) { | |
f4b31db9 | 4705 | fill_result_tf(qc); |
255c03d1 | 4706 | trace_ata_qc_complete_internal(qc); |
f08dc1ac TH |
4707 | __ata_qc_complete(qc); |
4708 | return; | |
4709 | } | |
f4b31db9 | 4710 | |
f08dc1ac TH |
4711 | /* |
4712 | * Non-internal qc has failed. Fill the result TF and | |
4713 | * summon EH. | |
4714 | */ | |
4715 | if (unlikely(qc->flags & ATA_QCFLAG_FAILED)) { | |
4716 | fill_result_tf(qc); | |
255c03d1 | 4717 | trace_ata_qc_complete_failed(qc); |
f08dc1ac | 4718 | ata_qc_schedule_eh(qc); |
f4b31db9 | 4719 | return; |
f686bcb8 TH |
4720 | } |
4721 | ||
4dc738ed TH |
4722 | WARN_ON_ONCE(ap->pflags & ATA_PFLAG_FROZEN); |
4723 | ||
f686bcb8 TH |
4724 | /* read result TF if requested */ |
4725 | if (qc->flags & ATA_QCFLAG_RESULT_TF) | |
39599a53 | 4726 | fill_result_tf(qc); |
f686bcb8 | 4727 | |
255c03d1 | 4728 | trace_ata_qc_complete_done(qc); |
4dbfa39b TH |
4729 | /* Some commands need post-processing after successful |
4730 | * completion. | |
4731 | */ | |
4732 | switch (qc->tf.command) { | |
4733 | case ATA_CMD_SET_FEATURES: | |
4734 | if (qc->tf.feature != SETFEATURES_WC_ON && | |
0c12735e TY |
4735 | qc->tf.feature != SETFEATURES_WC_OFF && |
4736 | qc->tf.feature != SETFEATURES_RA_ON && | |
4737 | qc->tf.feature != SETFEATURES_RA_OFF) | |
4dbfa39b | 4738 | break; |
df561f66 | 4739 | fallthrough; |
4dbfa39b TH |
4740 | case ATA_CMD_INIT_DEV_PARAMS: /* CHS translation changed */ |
4741 | case ATA_CMD_SET_MULTI: /* multi_count changed */ | |
4742 | /* revalidate device */ | |
4743 | ehi->dev_action[dev->devno] |= ATA_EH_REVALIDATE; | |
4744 | ata_port_schedule_eh(ap); | |
4745 | break; | |
054a5fba TH |
4746 | |
4747 | case ATA_CMD_SLEEP: | |
4748 | dev->flags |= ATA_DFLAG_SLEEPING; | |
4749 | break; | |
4dbfa39b TH |
4750 | } |
4751 | ||
00115e0f TH |
4752 | if (unlikely(dev->flags & ATA_DFLAG_DUBIOUS_XFER)) |
4753 | ata_verify_xfer(qc); | |
4754 | ||
f686bcb8 TH |
4755 | __ata_qc_complete(qc); |
4756 | } else { | |
4757 | if (qc->flags & ATA_QCFLAG_EH_SCHEDULED) | |
4758 | return; | |
4759 | ||
4760 | /* read result TF if failed or requested */ | |
4761 | if (qc->err_mask || qc->flags & ATA_QCFLAG_RESULT_TF) | |
39599a53 | 4762 | fill_result_tf(qc); |
f686bcb8 TH |
4763 | |
4764 | __ata_qc_complete(qc); | |
4765 | } | |
4766 | } | |
a52fbcfc | 4767 | EXPORT_SYMBOL_GPL(ata_qc_complete); |
f686bcb8 | 4768 | |
8385d756 SH |
4769 | /** |
4770 | * ata_qc_get_active - get bitmask of active qcs | |
4771 | * @ap: port in question | |
4772 | * | |
4773 | * LOCKING: | |
4774 | * spin_lock_irqsave(host lock) | |
4775 | * | |
4776 | * RETURNS: | |
4777 | * Bitmask of active qcs | |
4778 | */ | |
4779 | u64 ata_qc_get_active(struct ata_port *ap) | |
4780 | { | |
4781 | u64 qc_active = ap->qc_active; | |
4782 | ||
4783 | /* ATA_TAG_INTERNAL is sent to hw as tag 0 */ | |
4784 | if (qc_active & (1ULL << ATA_TAG_INTERNAL)) { | |
4785 | qc_active |= (1 << 0); | |
4786 | qc_active &= ~(1ULL << ATA_TAG_INTERNAL); | |
4787 | } | |
4788 | ||
4789 | return qc_active; | |
4790 | } | |
4791 | EXPORT_SYMBOL_GPL(ata_qc_get_active); | |
4792 | ||
1da177e4 LT |
4793 | /** |
4794 | * ata_qc_issue - issue taskfile to device | |
4795 | * @qc: command to issue to device | |
4796 | * | |
4797 | * Prepare an ATA command to submission to device. | |
4798 | * This includes mapping the data into a DMA-able | |
4799 | * area, filling in the S/G table, and finally | |
4800 | * writing the taskfile to hardware, starting the command. | |
4801 | * | |
4802 | * LOCKING: | |
cca3974e | 4803 | * spin_lock_irqsave(host lock) |
1da177e4 | 4804 | */ |
8e0e694a | 4805 | void ata_qc_issue(struct ata_queued_cmd *qc) |
1da177e4 LT |
4806 | { |
4807 | struct ata_port *ap = qc->ap; | |
9af5c9c9 | 4808 | struct ata_link *link = qc->dev->link; |
405e66b3 | 4809 | u8 prot = qc->tf.protocol; |
1da177e4 | 4810 | |
dedaf2b0 TH |
4811 | /* Make sure only one non-NCQ command is outstanding. The |
4812 | * check is skipped for old EH because it reuses active qc to | |
4813 | * request ATAPI sense. | |
4814 | */ | |
efcb3cf7 | 4815 | WARN_ON_ONCE(ap->ops->error_handler && ata_tag_valid(link->active_tag)); |
dedaf2b0 | 4816 | |
1973a023 | 4817 | if (ata_is_ncq(prot)) { |
4e5b6260 | 4818 | WARN_ON_ONCE(link->sactive & (1 << qc->hw_tag)); |
da917d69 TH |
4819 | |
4820 | if (!link->sactive) | |
4821 | ap->nr_active_links++; | |
4e5b6260 | 4822 | link->sactive |= 1 << qc->hw_tag; |
dedaf2b0 | 4823 | } else { |
efcb3cf7 | 4824 | WARN_ON_ONCE(link->sactive); |
da917d69 TH |
4825 | |
4826 | ap->nr_active_links++; | |
9af5c9c9 | 4827 | link->active_tag = qc->tag; |
dedaf2b0 TH |
4828 | } |
4829 | ||
e4a70e76 | 4830 | qc->flags |= ATA_QCFLAG_ACTIVE; |
e3ed8939 | 4831 | ap->qc_active |= 1ULL << qc->tag; |
e4a70e76 | 4832 | |
60f5d6ef TH |
4833 | /* |
4834 | * We guarantee to LLDs that they will have at least one | |
f92a2636 TH |
4835 | * non-zero sg if the command is a data command. |
4836 | */ | |
9173e5e8 | 4837 | if (ata_is_data(prot) && (!qc->sg || !qc->n_elem || !qc->nbytes)) |
60f5d6ef | 4838 | goto sys_err; |
f92a2636 | 4839 | |
405e66b3 | 4840 | if (ata_is_dma(prot) || (ata_is_pio(prot) && |
f92a2636 | 4841 | (ap->flags & ATA_FLAG_PIO_DMA))) |
001102d7 | 4842 | if (ata_sg_setup(qc)) |
60f5d6ef | 4843 | goto sys_err; |
1da177e4 | 4844 | |
cf480626 | 4845 | /* if device is sleeping, schedule reset and abort the link */ |
054a5fba | 4846 | if (unlikely(qc->dev->flags & ATA_DFLAG_SLEEPING)) { |
cf480626 | 4847 | link->eh_info.action |= ATA_EH_RESET; |
054a5fba TH |
4848 | ata_ehi_push_desc(&link->eh_info, "waking up from sleep"); |
4849 | ata_link_abort(link); | |
4850 | return; | |
4851 | } | |
4852 | ||
fc914faa | 4853 | trace_ata_qc_prep(qc); |
95364f36 JS |
4854 | qc->err_mask |= ap->ops->qc_prep(qc); |
4855 | if (unlikely(qc->err_mask)) | |
4856 | goto err; | |
255c03d1 | 4857 | trace_ata_qc_issue(qc); |
8e0e694a TH |
4858 | qc->err_mask |= ap->ops->qc_issue(qc); |
4859 | if (unlikely(qc->err_mask)) | |
4860 | goto err; | |
4861 | return; | |
1da177e4 | 4862 | |
60f5d6ef | 4863 | sys_err: |
8e0e694a TH |
4864 | qc->err_mask |= AC_ERR_SYSTEM; |
4865 | err: | |
4866 | ata_qc_complete(qc); | |
1da177e4 LT |
4867 | } |
4868 | ||
34bf2170 | 4869 | /** |
b1c72916 | 4870 | * ata_phys_link_online - test whether the given link is online |
936fd732 | 4871 | * @link: ATA link to test |
34bf2170 | 4872 | * |
936fd732 TH |
4873 | * Test whether @link is online. Note that this function returns |
4874 | * 0 if online status of @link cannot be obtained, so | |
4875 | * ata_link_online(link) != !ata_link_offline(link). | |
34bf2170 TH |
4876 | * |
4877 | * LOCKING: | |
4878 | * None. | |
4879 | * | |
4880 | * RETURNS: | |
b5b3fa38 | 4881 | * True if the port online status is available and online. |
34bf2170 | 4882 | */ |
b1c72916 | 4883 | bool ata_phys_link_online(struct ata_link *link) |
34bf2170 TH |
4884 | { |
4885 | u32 sstatus; | |
4886 | ||
936fd732 | 4887 | if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0 && |
9913ff8a | 4888 | ata_sstatus_online(sstatus)) |
b5b3fa38 TH |
4889 | return true; |
4890 | return false; | |
34bf2170 TH |
4891 | } |
4892 | ||
4893 | /** | |
b1c72916 | 4894 | * ata_phys_link_offline - test whether the given link is offline |
936fd732 | 4895 | * @link: ATA link to test |
34bf2170 | 4896 | * |
936fd732 TH |
4897 | * Test whether @link is offline. Note that this function |
4898 | * returns 0 if offline status of @link cannot be obtained, so | |
4899 | * ata_link_online(link) != !ata_link_offline(link). | |
34bf2170 TH |
4900 | * |
4901 | * LOCKING: | |
4902 | * None. | |
4903 | * | |
4904 | * RETURNS: | |
b5b3fa38 | 4905 | * True if the port offline status is available and offline. |
34bf2170 | 4906 | */ |
b1c72916 | 4907 | bool ata_phys_link_offline(struct ata_link *link) |
34bf2170 TH |
4908 | { |
4909 | u32 sstatus; | |
4910 | ||
936fd732 | 4911 | if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0 && |
9913ff8a | 4912 | !ata_sstatus_online(sstatus)) |
b5b3fa38 TH |
4913 | return true; |
4914 | return false; | |
34bf2170 | 4915 | } |
0baab86b | 4916 | |
b1c72916 TH |
4917 | /** |
4918 | * ata_link_online - test whether the given link is online | |
4919 | * @link: ATA link to test | |
4920 | * | |
4921 | * Test whether @link is online. This is identical to | |
4922 | * ata_phys_link_online() when there's no slave link. When | |
4923 | * there's a slave link, this function should only be called on | |
4924 | * the master link and will return true if any of M/S links is | |
4925 | * online. | |
4926 | * | |
4927 | * LOCKING: | |
4928 | * None. | |
4929 | * | |
4930 | * RETURNS: | |
4931 | * True if the port online status is available and online. | |
4932 | */ | |
4933 | bool ata_link_online(struct ata_link *link) | |
4934 | { | |
4935 | struct ata_link *slave = link->ap->slave_link; | |
4936 | ||
4937 | WARN_ON(link == slave); /* shouldn't be called on slave link */ | |
4938 | ||
4939 | return ata_phys_link_online(link) || | |
4940 | (slave && ata_phys_link_online(slave)); | |
4941 | } | |
a52fbcfc | 4942 | EXPORT_SYMBOL_GPL(ata_link_online); |
b1c72916 TH |
4943 | |
4944 | /** | |
4945 | * ata_link_offline - test whether the given link is offline | |
4946 | * @link: ATA link to test | |
4947 | * | |
4948 | * Test whether @link is offline. This is identical to | |
4949 | * ata_phys_link_offline() when there's no slave link. When | |
4950 | * there's a slave link, this function should only be called on | |
4951 | * the master link and will return true if both M/S links are | |
4952 | * offline. | |
4953 | * | |
4954 | * LOCKING: | |
4955 | * None. | |
4956 | * | |
4957 | * RETURNS: | |
4958 | * True if the port offline status is available and offline. | |
4959 | */ | |
4960 | bool ata_link_offline(struct ata_link *link) | |
4961 | { | |
4962 | struct ata_link *slave = link->ap->slave_link; | |
4963 | ||
4964 | WARN_ON(link == slave); /* shouldn't be called on slave link */ | |
4965 | ||
4966 | return ata_phys_link_offline(link) && | |
4967 | (!slave || ata_phys_link_offline(slave)); | |
4968 | } | |
a52fbcfc | 4969 | EXPORT_SYMBOL_GPL(ata_link_offline); |
b1c72916 | 4970 | |
6ffa01d8 | 4971 | #ifdef CONFIG_PM |
bc6e7c4b DW |
4972 | static void ata_port_request_pm(struct ata_port *ap, pm_message_t mesg, |
4973 | unsigned int action, unsigned int ehi_flags, | |
4974 | bool async) | |
500530f6 | 4975 | { |
5ef41082 | 4976 | struct ata_link *link; |
500530f6 | 4977 | unsigned long flags; |
500530f6 | 4978 | |
5ef41082 LM |
4979 | /* Previous resume operation might still be in |
4980 | * progress. Wait for PM_PENDING to clear. | |
4981 | */ | |
4982 | if (ap->pflags & ATA_PFLAG_PM_PENDING) { | |
4983 | ata_port_wait_eh(ap); | |
4984 | WARN_ON(ap->pflags & ATA_PFLAG_PM_PENDING); | |
4985 | } | |
500530f6 | 4986 | |
5ef41082 LM |
4987 | /* request PM ops to EH */ |
4988 | spin_lock_irqsave(ap->lock, flags); | |
500530f6 | 4989 | |
5ef41082 | 4990 | ap->pm_mesg = mesg; |
5ef41082 LM |
4991 | ap->pflags |= ATA_PFLAG_PM_PENDING; |
4992 | ata_for_each_link(link, ap, HOST_FIRST) { | |
4993 | link->eh_info.action |= action; | |
4994 | link->eh_info.flags |= ehi_flags; | |
4995 | } | |
500530f6 | 4996 | |
5ef41082 | 4997 | ata_port_schedule_eh(ap); |
500530f6 | 4998 | |
5ef41082 | 4999 | spin_unlock_irqrestore(ap->lock, flags); |
500530f6 | 5000 | |
2fcbdcb4 | 5001 | if (!async) { |
5ef41082 LM |
5002 | ata_port_wait_eh(ap); |
5003 | WARN_ON(ap->pflags & ATA_PFLAG_PM_PENDING); | |
500530f6 | 5004 | } |
500530f6 TH |
5005 | } |
5006 | ||
bc6e7c4b DW |
5007 | /* |
5008 | * On some hardware, device fails to respond after spun down for suspend. As | |
5009 | * the device won't be used before being resumed, we don't need to touch the | |
5010 | * device. Ask EH to skip the usual stuff and proceed directly to suspend. | |
5011 | * | |
5012 | * http://thread.gmane.org/gmane.linux.ide/46764 | |
5013 | */ | |
5014 | static const unsigned int ata_port_suspend_ehi = ATA_EHI_QUIET | |
5015 | | ATA_EHI_NO_AUTOPSY | |
5016 | | ATA_EHI_NO_RECOVERY; | |
5017 | ||
5018 | static void ata_port_suspend(struct ata_port *ap, pm_message_t mesg) | |
5ef41082 | 5019 | { |
bc6e7c4b | 5020 | ata_port_request_pm(ap, mesg, 0, ata_port_suspend_ehi, false); |
5ef41082 LM |
5021 | } |
5022 | ||
bc6e7c4b | 5023 | static void ata_port_suspend_async(struct ata_port *ap, pm_message_t mesg) |
2fcbdcb4 | 5024 | { |
bc6e7c4b | 5025 | ata_port_request_pm(ap, mesg, 0, ata_port_suspend_ehi, true); |
2fcbdcb4 DW |
5026 | } |
5027 | ||
bc6e7c4b | 5028 | static int ata_port_pm_suspend(struct device *dev) |
5ef41082 | 5029 | { |
bc6e7c4b DW |
5030 | struct ata_port *ap = to_ata_port(dev); |
5031 | ||
5ef41082 LM |
5032 | if (pm_runtime_suspended(dev)) |
5033 | return 0; | |
5034 | ||
bc6e7c4b DW |
5035 | ata_port_suspend(ap, PMSG_SUSPEND); |
5036 | return 0; | |
33574d68 LM |
5037 | } |
5038 | ||
bc6e7c4b | 5039 | static int ata_port_pm_freeze(struct device *dev) |
33574d68 | 5040 | { |
bc6e7c4b DW |
5041 | struct ata_port *ap = to_ata_port(dev); |
5042 | ||
33574d68 | 5043 | if (pm_runtime_suspended(dev)) |
f5e6d0d0 | 5044 | return 0; |
33574d68 | 5045 | |
bc6e7c4b DW |
5046 | ata_port_suspend(ap, PMSG_FREEZE); |
5047 | return 0; | |
33574d68 LM |
5048 | } |
5049 | ||
bc6e7c4b | 5050 | static int ata_port_pm_poweroff(struct device *dev) |
33574d68 | 5051 | { |
bc6e7c4b DW |
5052 | ata_port_suspend(to_ata_port(dev), PMSG_HIBERNATE); |
5053 | return 0; | |
5ef41082 LM |
5054 | } |
5055 | ||
bc6e7c4b DW |
5056 | static const unsigned int ata_port_resume_ehi = ATA_EHI_NO_AUTOPSY |
5057 | | ATA_EHI_QUIET; | |
5ef41082 | 5058 | |
bc6e7c4b DW |
5059 | static void ata_port_resume(struct ata_port *ap, pm_message_t mesg) |
5060 | { | |
5061 | ata_port_request_pm(ap, mesg, ATA_EH_RESET, ata_port_resume_ehi, false); | |
5ef41082 LM |
5062 | } |
5063 | ||
bc6e7c4b | 5064 | static void ata_port_resume_async(struct ata_port *ap, pm_message_t mesg) |
2fcbdcb4 | 5065 | { |
bc6e7c4b | 5066 | ata_port_request_pm(ap, mesg, ATA_EH_RESET, ata_port_resume_ehi, true); |
2fcbdcb4 DW |
5067 | } |
5068 | ||
bc6e7c4b | 5069 | static int ata_port_pm_resume(struct device *dev) |
e90b1e5a | 5070 | { |
200421a8 | 5071 | ata_port_resume_async(to_ata_port(dev), PMSG_RESUME); |
bc6e7c4b DW |
5072 | pm_runtime_disable(dev); |
5073 | pm_runtime_set_active(dev); | |
5074 | pm_runtime_enable(dev); | |
5075 | return 0; | |
e90b1e5a LM |
5076 | } |
5077 | ||
7e15e9be AL |
5078 | /* |
5079 | * For ODDs, the upper layer will poll for media change every few seconds, | |
5080 | * which will make it enter and leave suspend state every few seconds. And | |
5081 | * as each suspend will cause a hard/soft reset, the gain of runtime suspend | |
5082 | * is very little and the ODD may malfunction after constantly being reset. | |
5083 | * So the idle callback here will not proceed to suspend if a non-ZPODD capable | |
5084 | * ODD is attached to the port. | |
5085 | */ | |
9ee4f393 LM |
5086 | static int ata_port_runtime_idle(struct device *dev) |
5087 | { | |
7e15e9be AL |
5088 | struct ata_port *ap = to_ata_port(dev); |
5089 | struct ata_link *link; | |
5090 | struct ata_device *adev; | |
5091 | ||
5092 | ata_for_each_link(link, ap, HOST_FIRST) { | |
5093 | ata_for_each_dev(adev, link, ENABLED) | |
5094 | if (adev->class == ATA_DEV_ATAPI && | |
5095 | !zpodd_dev_enabled(adev)) | |
5096 | return -EBUSY; | |
5097 | } | |
5098 | ||
45f0a85c | 5099 | return 0; |
9ee4f393 LM |
5100 | } |
5101 | ||
a7ff60db AL |
5102 | static int ata_port_runtime_suspend(struct device *dev) |
5103 | { | |
bc6e7c4b DW |
5104 | ata_port_suspend(to_ata_port(dev), PMSG_AUTO_SUSPEND); |
5105 | return 0; | |
a7ff60db AL |
5106 | } |
5107 | ||
5108 | static int ata_port_runtime_resume(struct device *dev) | |
5109 | { | |
bc6e7c4b DW |
5110 | ata_port_resume(to_ata_port(dev), PMSG_AUTO_RESUME); |
5111 | return 0; | |
a7ff60db AL |
5112 | } |
5113 | ||
5ef41082 | 5114 | static const struct dev_pm_ops ata_port_pm_ops = { |
bc6e7c4b DW |
5115 | .suspend = ata_port_pm_suspend, |
5116 | .resume = ata_port_pm_resume, | |
5117 | .freeze = ata_port_pm_freeze, | |
5118 | .thaw = ata_port_pm_resume, | |
5119 | .poweroff = ata_port_pm_poweroff, | |
5120 | .restore = ata_port_pm_resume, | |
9ee4f393 | 5121 | |
a7ff60db AL |
5122 | .runtime_suspend = ata_port_runtime_suspend, |
5123 | .runtime_resume = ata_port_runtime_resume, | |
9ee4f393 | 5124 | .runtime_idle = ata_port_runtime_idle, |
5ef41082 LM |
5125 | }; |
5126 | ||
2fcbdcb4 DW |
5127 | /* sas ports don't participate in pm runtime management of ata_ports, |
5128 | * and need to resume ata devices at the domain level, not the per-port | |
5129 | * level. sas suspend/resume is async to allow parallel port recovery | |
5130 | * since sas has multiple ata_port instances per Scsi_Host. | |
5131 | */ | |
bc6e7c4b | 5132 | void ata_sas_port_suspend(struct ata_port *ap) |
2fcbdcb4 | 5133 | { |
bc6e7c4b | 5134 | ata_port_suspend_async(ap, PMSG_SUSPEND); |
2fcbdcb4 | 5135 | } |
bc6e7c4b | 5136 | EXPORT_SYMBOL_GPL(ata_sas_port_suspend); |
2fcbdcb4 | 5137 | |
bc6e7c4b | 5138 | void ata_sas_port_resume(struct ata_port *ap) |
2fcbdcb4 | 5139 | { |
bc6e7c4b | 5140 | ata_port_resume_async(ap, PMSG_RESUME); |
2fcbdcb4 | 5141 | } |
bc6e7c4b | 5142 | EXPORT_SYMBOL_GPL(ata_sas_port_resume); |
2fcbdcb4 | 5143 | |
500530f6 | 5144 | /** |
cca3974e JG |
5145 | * ata_host_suspend - suspend host |
5146 | * @host: host to suspend | |
500530f6 TH |
5147 | * @mesg: PM message |
5148 | * | |
5ef41082 | 5149 | * Suspend @host. Actual operation is performed by port suspend. |
500530f6 | 5150 | */ |
ec87cf37 | 5151 | void ata_host_suspend(struct ata_host *host, pm_message_t mesg) |
500530f6 | 5152 | { |
5ef41082 | 5153 | host->dev->power.power_state = mesg; |
500530f6 | 5154 | } |
a52fbcfc | 5155 | EXPORT_SYMBOL_GPL(ata_host_suspend); |
500530f6 TH |
5156 | |
5157 | /** | |
cca3974e JG |
5158 | * ata_host_resume - resume host |
5159 | * @host: host to resume | |
500530f6 | 5160 | * |
5ef41082 | 5161 | * Resume @host. Actual operation is performed by port resume. |
500530f6 | 5162 | */ |
cca3974e | 5163 | void ata_host_resume(struct ata_host *host) |
500530f6 | 5164 | { |
72ad6ec4 | 5165 | host->dev->power.power_state = PMSG_ON; |
500530f6 | 5166 | } |
a52fbcfc | 5167 | EXPORT_SYMBOL_GPL(ata_host_resume); |
6ffa01d8 | 5168 | #endif |
500530f6 | 5169 | |
8df82c13 | 5170 | const struct device_type ata_port_type = { |
5ef41082 LM |
5171 | .name = "ata_port", |
5172 | #ifdef CONFIG_PM | |
5173 | .pm = &ata_port_pm_ops, | |
5174 | #endif | |
5175 | }; | |
5176 | ||
3ef3b43d TH |
5177 | /** |
5178 | * ata_dev_init - Initialize an ata_device structure | |
5179 | * @dev: Device structure to initialize | |
5180 | * | |
5181 | * Initialize @dev in preparation for probing. | |
5182 | * | |
5183 | * LOCKING: | |
5184 | * Inherited from caller. | |
5185 | */ | |
5186 | void ata_dev_init(struct ata_device *dev) | |
5187 | { | |
b1c72916 | 5188 | struct ata_link *link = ata_dev_phys_link(dev); |
9af5c9c9 | 5189 | struct ata_port *ap = link->ap; |
72fa4b74 TH |
5190 | unsigned long flags; |
5191 | ||
b1c72916 | 5192 | /* SATA spd limit is bound to the attached device, reset together */ |
9af5c9c9 TH |
5193 | link->sata_spd_limit = link->hw_sata_spd_limit; |
5194 | link->sata_spd = 0; | |
5a04bf4b | 5195 | |
72fa4b74 TH |
5196 | /* High bits of dev->flags are used to record warm plug |
5197 | * requests which occur asynchronously. Synchronize using | |
cca3974e | 5198 | * host lock. |
72fa4b74 | 5199 | */ |
ba6a1308 | 5200 | spin_lock_irqsave(ap->lock, flags); |
72fa4b74 | 5201 | dev->flags &= ~ATA_DFLAG_INIT_MASK; |
3dcc323f | 5202 | dev->horkage = 0; |
ba6a1308 | 5203 | spin_unlock_irqrestore(ap->lock, flags); |
3ef3b43d | 5204 | |
99cf610a TH |
5205 | memset((void *)dev + ATA_DEVICE_CLEAR_BEGIN, 0, |
5206 | ATA_DEVICE_CLEAR_END - ATA_DEVICE_CLEAR_BEGIN); | |
3ef3b43d TH |
5207 | dev->pio_mask = UINT_MAX; |
5208 | dev->mwdma_mask = UINT_MAX; | |
5209 | dev->udma_mask = UINT_MAX; | |
5210 | } | |
5211 | ||
4fb37a25 TH |
5212 | /** |
5213 | * ata_link_init - Initialize an ata_link structure | |
5214 | * @ap: ATA port link is attached to | |
5215 | * @link: Link structure to initialize | |
8989805d | 5216 | * @pmp: Port multiplier port number |
4fb37a25 TH |
5217 | * |
5218 | * Initialize @link. | |
5219 | * | |
5220 | * LOCKING: | |
5221 | * Kernel thread context (may sleep) | |
5222 | */ | |
fb7fd614 | 5223 | void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp) |
4fb37a25 TH |
5224 | { |
5225 | int i; | |
5226 | ||
5227 | /* clear everything except for devices */ | |
d9027470 GG |
5228 | memset((void *)link + ATA_LINK_CLEAR_BEGIN, 0, |
5229 | ATA_LINK_CLEAR_END - ATA_LINK_CLEAR_BEGIN); | |
4fb37a25 TH |
5230 | |
5231 | link->ap = ap; | |
8989805d | 5232 | link->pmp = pmp; |
4fb37a25 TH |
5233 | link->active_tag = ATA_TAG_POISON; |
5234 | link->hw_sata_spd_limit = UINT_MAX; | |
5235 | ||
5236 | /* can't use iterator, ap isn't initialized yet */ | |
5237 | for (i = 0; i < ATA_MAX_DEVICES; i++) { | |
5238 | struct ata_device *dev = &link->device[i]; | |
5239 | ||
5240 | dev->link = link; | |
5241 | dev->devno = dev - link->device; | |
110f66d2 TH |
5242 | #ifdef CONFIG_ATA_ACPI |
5243 | dev->gtf_filter = ata_acpi_gtf_filter; | |
5244 | #endif | |
4fb37a25 TH |
5245 | ata_dev_init(dev); |
5246 | } | |
5247 | } | |
5248 | ||
5249 | /** | |
5250 | * sata_link_init_spd - Initialize link->sata_spd_limit | |
5251 | * @link: Link to configure sata_spd_limit for | |
5252 | * | |
a31a6997 | 5253 | * Initialize ``link->[hw_]sata_spd_limit`` to the currently |
4fb37a25 TH |
5254 | * configured value. |
5255 | * | |
5256 | * LOCKING: | |
5257 | * Kernel thread context (may sleep). | |
5258 | * | |
5259 | * RETURNS: | |
5260 | * 0 on success, -errno on failure. | |
5261 | */ | |
fb7fd614 | 5262 | int sata_link_init_spd(struct ata_link *link) |
4fb37a25 | 5263 | { |
33267325 | 5264 | u8 spd; |
4fb37a25 TH |
5265 | int rc; |
5266 | ||
d127ea7b | 5267 | rc = sata_scr_read(link, SCR_CONTROL, &link->saved_scontrol); |
4fb37a25 TH |
5268 | if (rc) |
5269 | return rc; | |
5270 | ||
d127ea7b | 5271 | spd = (link->saved_scontrol >> 4) & 0xf; |
4fb37a25 TH |
5272 | if (spd) |
5273 | link->hw_sata_spd_limit &= (1 << spd) - 1; | |
5274 | ||
05944bdf | 5275 | ata_force_link_limits(link); |
33267325 | 5276 | |
4fb37a25 TH |
5277 | link->sata_spd_limit = link->hw_sata_spd_limit; |
5278 | ||
5279 | return 0; | |
5280 | } | |
5281 | ||
1da177e4 | 5282 | /** |
f3187195 TH |
5283 | * ata_port_alloc - allocate and initialize basic ATA port resources |
5284 | * @host: ATA host this allocated port belongs to | |
1da177e4 | 5285 | * |
f3187195 TH |
5286 | * Allocate and initialize basic ATA port resources. |
5287 | * | |
5288 | * RETURNS: | |
5289 | * Allocate ATA port on success, NULL on failure. | |
0cba632b | 5290 | * |
1da177e4 | 5291 | * LOCKING: |
f3187195 | 5292 | * Inherited from calling layer (may sleep). |
1da177e4 | 5293 | */ |
f3187195 | 5294 | struct ata_port *ata_port_alloc(struct ata_host *host) |
1da177e4 | 5295 | { |
f3187195 | 5296 | struct ata_port *ap; |
1da177e4 | 5297 | |
f3187195 TH |
5298 | ap = kzalloc(sizeof(*ap), GFP_KERNEL); |
5299 | if (!ap) | |
5300 | return NULL; | |
4fca377f | 5301 | |
7b3a24c5 | 5302 | ap->pflags |= ATA_PFLAG_INITIALIZING | ATA_PFLAG_FROZEN; |
cca3974e | 5303 | ap->lock = &host->lock; |
f3187195 | 5304 | ap->print_id = -1; |
e628dc99 | 5305 | ap->local_port_no = -1; |
cca3974e | 5306 | ap->host = host; |
f3187195 | 5307 | ap->dev = host->dev; |
bd5d825c | 5308 | |
ad72cf98 | 5309 | mutex_init(&ap->scsi_scan_mutex); |
65f27f38 DH |
5310 | INIT_DELAYED_WORK(&ap->hotplug_task, ata_scsi_hotplug); |
5311 | INIT_WORK(&ap->scsi_rescan_task, ata_scsi_dev_rescan); | |
a72ec4ce | 5312 | INIT_LIST_HEAD(&ap->eh_done_q); |
c6cf9e99 | 5313 | init_waitqueue_head(&ap->eh_wait_q); |
45fabbb7 | 5314 | init_completion(&ap->park_req_pending); |
b93ab338 KC |
5315 | timer_setup(&ap->fastdrain_timer, ata_eh_fastdrain_timerfn, |
5316 | TIMER_DEFERRABLE); | |
1da177e4 | 5317 | |
838df628 | 5318 | ap->cbl = ATA_CBL_NONE; |
838df628 | 5319 | |
8989805d | 5320 | ata_link_init(ap, &ap->link, 0); |
1da177e4 LT |
5321 | |
5322 | #ifdef ATA_IRQ_TRAP | |
5323 | ap->stats.unhandled_irq = 1; | |
5324 | ap->stats.idle_irq = 1; | |
5325 | #endif | |
270390e1 TH |
5326 | ata_sff_port_init(ap); |
5327 | ||
1da177e4 | 5328 | return ap; |
1da177e4 LT |
5329 | } |
5330 | ||
2623c7a5 | 5331 | static void ata_devres_release(struct device *gendev, void *res) |
f0d36efd TH |
5332 | { |
5333 | struct ata_host *host = dev_get_drvdata(gendev); | |
5334 | int i; | |
5335 | ||
1aa506e4 TH |
5336 | for (i = 0; i < host->n_ports; i++) { |
5337 | struct ata_port *ap = host->ports[i]; | |
5338 | ||
4911487a TH |
5339 | if (!ap) |
5340 | continue; | |
5341 | ||
5342 | if (ap->scsi_host) | |
1aa506e4 TH |
5343 | scsi_host_put(ap->scsi_host); |
5344 | ||
2623c7a5 TK |
5345 | } |
5346 | ||
5347 | dev_set_drvdata(gendev, NULL); | |
5348 | ata_host_put(host); | |
5349 | } | |
5350 | ||
5351 | static void ata_host_release(struct kref *kref) | |
5352 | { | |
5353 | struct ata_host *host = container_of(kref, struct ata_host, kref); | |
5354 | int i; | |
5355 | ||
5356 | for (i = 0; i < host->n_ports; i++) { | |
5357 | struct ata_port *ap = host->ports[i]; | |
5358 | ||
633273a3 | 5359 | kfree(ap->pmp_link); |
b1c72916 | 5360 | kfree(ap->slave_link); |
4911487a | 5361 | kfree(ap); |
1aa506e4 TH |
5362 | host->ports[i] = NULL; |
5363 | } | |
2623c7a5 TK |
5364 | kfree(host); |
5365 | } | |
1aa506e4 | 5366 | |
2623c7a5 TK |
5367 | void ata_host_get(struct ata_host *host) |
5368 | { | |
5369 | kref_get(&host->kref); | |
5370 | } | |
5371 | ||
5372 | void ata_host_put(struct ata_host *host) | |
5373 | { | |
5374 | kref_put(&host->kref, ata_host_release); | |
f0d36efd | 5375 | } |
a52fbcfc | 5376 | EXPORT_SYMBOL_GPL(ata_host_put); |
f0d36efd | 5377 | |
f3187195 TH |
5378 | /** |
5379 | * ata_host_alloc - allocate and init basic ATA host resources | |
5380 | * @dev: generic device this host is associated with | |
5381 | * @max_ports: maximum number of ATA ports associated with this host | |
5382 | * | |
5383 | * Allocate and initialize basic ATA host resources. LLD calls | |
5384 | * this function to allocate a host, initializes it fully and | |
5385 | * attaches it using ata_host_register(). | |
5386 | * | |
5387 | * @max_ports ports are allocated and host->n_ports is | |
5388 | * initialized to @max_ports. The caller is allowed to decrease | |
5389 | * host->n_ports before calling ata_host_register(). The unused | |
5390 | * ports will be automatically freed on registration. | |
5391 | * | |
5392 | * RETURNS: | |
5393 | * Allocate ATA host on success, NULL on failure. | |
5394 | * | |
5395 | * LOCKING: | |
5396 | * Inherited from calling layer (may sleep). | |
5397 | */ | |
5398 | struct ata_host *ata_host_alloc(struct device *dev, int max_ports) | |
5399 | { | |
5400 | struct ata_host *host; | |
5401 | size_t sz; | |
5402 | int i; | |
2623c7a5 | 5403 | void *dr; |
f3187195 | 5404 | |
f3187195 TH |
5405 | /* alloc a container for our list of ATA ports (buses) */ |
5406 | sz = sizeof(struct ata_host) + (max_ports + 1) * sizeof(void *); | |
2623c7a5 | 5407 | host = kzalloc(sz, GFP_KERNEL); |
f3187195 | 5408 | if (!host) |
2623c7a5 TK |
5409 | return NULL; |
5410 | ||
5411 | if (!devres_open_group(dev, NULL, GFP_KERNEL)) | |
dafd6c49 | 5412 | goto err_free; |
2623c7a5 TK |
5413 | |
5414 | dr = devres_alloc(ata_devres_release, 0, GFP_KERNEL); | |
5415 | if (!dr) | |
f3187195 TH |
5416 | goto err_out; |
5417 | ||
2623c7a5 | 5418 | devres_add(dev, dr); |
f3187195 TH |
5419 | dev_set_drvdata(dev, host); |
5420 | ||
5421 | spin_lock_init(&host->lock); | |
c0c362b6 | 5422 | mutex_init(&host->eh_mutex); |
f3187195 TH |
5423 | host->dev = dev; |
5424 | host->n_ports = max_ports; | |
2623c7a5 | 5425 | kref_init(&host->kref); |
f3187195 TH |
5426 | |
5427 | /* allocate ports bound to this host */ | |
5428 | for (i = 0; i < max_ports; i++) { | |
5429 | struct ata_port *ap; | |
5430 | ||
5431 | ap = ata_port_alloc(host); | |
5432 | if (!ap) | |
5433 | goto err_out; | |
5434 | ||
5435 | ap->port_no = i; | |
5436 | host->ports[i] = ap; | |
5437 | } | |
5438 | ||
5439 | devres_remove_group(dev, NULL); | |
5440 | return host; | |
5441 | ||
5442 | err_out: | |
5443 | devres_release_group(dev, NULL); | |
dafd6c49 CIK |
5444 | err_free: |
5445 | kfree(host); | |
f3187195 TH |
5446 | return NULL; |
5447 | } | |
a52fbcfc | 5448 | EXPORT_SYMBOL_GPL(ata_host_alloc); |
f3187195 | 5449 | |
f5cda257 TH |
5450 | /** |
5451 | * ata_host_alloc_pinfo - alloc host and init with port_info array | |
5452 | * @dev: generic device this host is associated with | |
5453 | * @ppi: array of ATA port_info to initialize host with | |
5454 | * @n_ports: number of ATA ports attached to this host | |
5455 | * | |
5456 | * Allocate ATA host and initialize with info from @ppi. If NULL | |
5457 | * terminated, @ppi may contain fewer entries than @n_ports. The | |
5458 | * last entry will be used for the remaining ports. | |
5459 | * | |
5460 | * RETURNS: | |
5461 | * Allocate ATA host on success, NULL on failure. | |
5462 | * | |
5463 | * LOCKING: | |
5464 | * Inherited from calling layer (may sleep). | |
5465 | */ | |
5466 | struct ata_host *ata_host_alloc_pinfo(struct device *dev, | |
5467 | const struct ata_port_info * const * ppi, | |
5468 | int n_ports) | |
5469 | { | |
bf476fe2 | 5470 | const struct ata_port_info *pi = &ata_dummy_port_info; |
f5cda257 TH |
5471 | struct ata_host *host; |
5472 | int i, j; | |
5473 | ||
5474 | host = ata_host_alloc(dev, n_ports); | |
5475 | if (!host) | |
5476 | return NULL; | |
5477 | ||
bf476fe2 | 5478 | for (i = 0, j = 0; i < host->n_ports; i++) { |
f5cda257 TH |
5479 | struct ata_port *ap = host->ports[i]; |
5480 | ||
5481 | if (ppi[j]) | |
5482 | pi = ppi[j++]; | |
5483 | ||
5484 | ap->pio_mask = pi->pio_mask; | |
5485 | ap->mwdma_mask = pi->mwdma_mask; | |
5486 | ap->udma_mask = pi->udma_mask; | |
5487 | ap->flags |= pi->flags; | |
0c88758b | 5488 | ap->link.flags |= pi->link_flags; |
f5cda257 TH |
5489 | ap->ops = pi->port_ops; |
5490 | ||
5491 | if (!host->ops && (pi->port_ops != &ata_dummy_port_ops)) | |
5492 | host->ops = pi->port_ops; | |
f5cda257 TH |
5493 | } |
5494 | ||
5495 | return host; | |
5496 | } | |
a52fbcfc | 5497 | EXPORT_SYMBOL_GPL(ata_host_alloc_pinfo); |
f5cda257 | 5498 | |
32ebbc0c TH |
5499 | static void ata_host_stop(struct device *gendev, void *res) |
5500 | { | |
5501 | struct ata_host *host = dev_get_drvdata(gendev); | |
5502 | int i; | |
5503 | ||
5504 | WARN_ON(!(host->flags & ATA_HOST_STARTED)); | |
5505 | ||
5506 | for (i = 0; i < host->n_ports; i++) { | |
5507 | struct ata_port *ap = host->ports[i]; | |
5508 | ||
5509 | if (ap->ops->port_stop) | |
5510 | ap->ops->port_stop(ap); | |
5511 | } | |
5512 | ||
5513 | if (host->ops->host_stop) | |
5514 | host->ops->host_stop(host); | |
5515 | } | |
5516 | ||
029cfd6b TH |
5517 | /** |
5518 | * ata_finalize_port_ops - finalize ata_port_operations | |
5519 | * @ops: ata_port_operations to finalize | |
5520 | * | |
5521 | * An ata_port_operations can inherit from another ops and that | |
5522 | * ops can again inherit from another. This can go on as many | |
5523 | * times as necessary as long as there is no loop in the | |
5524 | * inheritance chain. | |
5525 | * | |
5526 | * Ops tables are finalized when the host is started. NULL or | |
5527 | * unspecified entries are inherited from the closet ancestor | |
5528 | * which has the method and the entry is populated with it. | |
5529 | * After finalization, the ops table directly points to all the | |
5530 | * methods and ->inherits is no longer necessary and cleared. | |
5531 | * | |
5532 | * Using ATA_OP_NULL, inheriting ops can force a method to NULL. | |
5533 | * | |
5534 | * LOCKING: | |
5535 | * None. | |
5536 | */ | |
5537 | static void ata_finalize_port_ops(struct ata_port_operations *ops) | |
5538 | { | |
2da67659 | 5539 | static DEFINE_SPINLOCK(lock); |
029cfd6b TH |
5540 | const struct ata_port_operations *cur; |
5541 | void **begin = (void **)ops; | |
5542 | void **end = (void **)&ops->inherits; | |
5543 | void **pp; | |
5544 | ||
5545 | if (!ops || !ops->inherits) | |
5546 | return; | |
5547 | ||
5548 | spin_lock(&lock); | |
5549 | ||
5550 | for (cur = ops->inherits; cur; cur = cur->inherits) { | |
5551 | void **inherit = (void **)cur; | |
5552 | ||
5553 | for (pp = begin; pp < end; pp++, inherit++) | |
5554 | if (!*pp) | |
5555 | *pp = *inherit; | |
5556 | } | |
5557 | ||
5558 | for (pp = begin; pp < end; pp++) | |
5559 | if (IS_ERR(*pp)) | |
5560 | *pp = NULL; | |
5561 | ||
5562 | ops->inherits = NULL; | |
5563 | ||
5564 | spin_unlock(&lock); | |
5565 | } | |
5566 | ||
ecef7253 TH |
5567 | /** |
5568 | * ata_host_start - start and freeze ports of an ATA host | |
5569 | * @host: ATA host to start ports for | |
5570 | * | |
5571 | * Start and then freeze ports of @host. Started status is | |
5572 | * recorded in host->flags, so this function can be called | |
5573 | * multiple times. Ports are guaranteed to get started only | |
e0af10ac | 5574 | * once. If host->ops is not initialized yet, it is set to the |
f3187195 | 5575 | * first non-dummy port ops. |
ecef7253 TH |
5576 | * |
5577 | * LOCKING: | |
5578 | * Inherited from calling layer (may sleep). | |
5579 | * | |
5580 | * RETURNS: | |
5581 | * 0 if all ports are started successfully, -errno otherwise. | |
5582 | */ | |
5583 | int ata_host_start(struct ata_host *host) | |
5584 | { | |
32ebbc0c TH |
5585 | int have_stop = 0; |
5586 | void *start_dr = NULL; | |
ecef7253 TH |
5587 | int i, rc; |
5588 | ||
5589 | if (host->flags & ATA_HOST_STARTED) | |
5590 | return 0; | |
5591 | ||
029cfd6b TH |
5592 | ata_finalize_port_ops(host->ops); |
5593 | ||
ecef7253 TH |
5594 | for (i = 0; i < host->n_ports; i++) { |
5595 | struct ata_port *ap = host->ports[i]; | |
5596 | ||
029cfd6b TH |
5597 | ata_finalize_port_ops(ap->ops); |
5598 | ||
f3187195 TH |
5599 | if (!host->ops && !ata_port_is_dummy(ap)) |
5600 | host->ops = ap->ops; | |
5601 | ||
32ebbc0c TH |
5602 | if (ap->ops->port_stop) |
5603 | have_stop = 1; | |
5604 | } | |
5605 | ||
355a8031 | 5606 | if (host->ops && host->ops->host_stop) |
32ebbc0c TH |
5607 | have_stop = 1; |
5608 | ||
5609 | if (have_stop) { | |
5610 | start_dr = devres_alloc(ata_host_stop, 0, GFP_KERNEL); | |
5611 | if (!start_dr) | |
5612 | return -ENOMEM; | |
5613 | } | |
5614 | ||
5615 | for (i = 0; i < host->n_ports; i++) { | |
5616 | struct ata_port *ap = host->ports[i]; | |
5617 | ||
ecef7253 TH |
5618 | if (ap->ops->port_start) { |
5619 | rc = ap->ops->port_start(ap); | |
5620 | if (rc) { | |
0f9fe9b7 | 5621 | if (rc != -ENODEV) |
a44fec1f JP |
5622 | dev_err(host->dev, |
5623 | "failed to start port %d (errno=%d)\n", | |
5624 | i, rc); | |
ecef7253 TH |
5625 | goto err_out; |
5626 | } | |
5627 | } | |
ecef7253 TH |
5628 | ata_eh_freeze_port(ap); |
5629 | } | |
5630 | ||
32ebbc0c TH |
5631 | if (start_dr) |
5632 | devres_add(host->dev, start_dr); | |
ecef7253 TH |
5633 | host->flags |= ATA_HOST_STARTED; |
5634 | return 0; | |
5635 | ||
5636 | err_out: | |
5637 | while (--i >= 0) { | |
5638 | struct ata_port *ap = host->ports[i]; | |
5639 | ||
5640 | if (ap->ops->port_stop) | |
5641 | ap->ops->port_stop(ap); | |
5642 | } | |
32ebbc0c | 5643 | devres_free(start_dr); |
ecef7253 TH |
5644 | return rc; |
5645 | } | |
a52fbcfc | 5646 | EXPORT_SYMBOL_GPL(ata_host_start); |
ecef7253 | 5647 | |
b03732f0 | 5648 | /** |
94bd5719 | 5649 | * ata_host_init - Initialize a host struct for sas (ipr, libsas) |
cca3974e JG |
5650 | * @host: host to initialize |
5651 | * @dev: device host is attached to | |
cca3974e | 5652 | * @ops: port_ops |
b03732f0 | 5653 | * |
b03732f0 | 5654 | */ |
cca3974e | 5655 | void ata_host_init(struct ata_host *host, struct device *dev, |
8d8e7d13 | 5656 | struct ata_port_operations *ops) |
b03732f0 | 5657 | { |
cca3974e | 5658 | spin_lock_init(&host->lock); |
c0c362b6 | 5659 | mutex_init(&host->eh_mutex); |
69278f79 | 5660 | host->n_tags = ATA_MAX_QUEUE; |
cca3974e | 5661 | host->dev = dev; |
cca3974e | 5662 | host->ops = ops; |
2fa4a326 | 5663 | kref_init(&host->kref); |
b03732f0 | 5664 | } |
a52fbcfc | 5665 | EXPORT_SYMBOL_GPL(ata_host_init); |
b03732f0 | 5666 | |
9508a66f | 5667 | void __ata_port_probe(struct ata_port *ap) |
79318057 | 5668 | { |
9508a66f DW |
5669 | struct ata_eh_info *ehi = &ap->link.eh_info; |
5670 | unsigned long flags; | |
886ad09f | 5671 | |
9508a66f DW |
5672 | /* kick EH for boot probing */ |
5673 | spin_lock_irqsave(ap->lock, flags); | |
79318057 | 5674 | |
9508a66f DW |
5675 | ehi->probe_mask |= ATA_ALL_DEVICES; |
5676 | ehi->action |= ATA_EH_RESET; | |
5677 | ehi->flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET; | |
79318057 | 5678 | |
9508a66f DW |
5679 | ap->pflags &= ~ATA_PFLAG_INITIALIZING; |
5680 | ap->pflags |= ATA_PFLAG_LOADING; | |
5681 | ata_port_schedule_eh(ap); | |
79318057 | 5682 | |
9508a66f DW |
5683 | spin_unlock_irqrestore(ap->lock, flags); |
5684 | } | |
79318057 | 5685 | |
9508a66f DW |
5686 | int ata_port_probe(struct ata_port *ap) |
5687 | { | |
5688 | int rc = 0; | |
79318057 | 5689 | |
9508a66f DW |
5690 | if (ap->ops->error_handler) { |
5691 | __ata_port_probe(ap); | |
79318057 AV |
5692 | ata_port_wait_eh(ap); |
5693 | } else { | |
79318057 | 5694 | rc = ata_bus_probe(ap); |
79318057 | 5695 | } |
238c9cf9 JB |
5696 | return rc; |
5697 | } | |
5698 | ||
5699 | ||
5700 | static void async_port_probe(void *data, async_cookie_t cookie) | |
5701 | { | |
5702 | struct ata_port *ap = data; | |
4fca377f | 5703 | |
238c9cf9 JB |
5704 | /* |
5705 | * If we're not allowed to scan this host in parallel, | |
5706 | * we need to wait until all previous scans have completed | |
5707 | * before going further. | |
5708 | * Jeff Garzik says this is only within a controller, so we | |
5709 | * don't need to wait for port 0, only for later ports. | |
5710 | */ | |
5711 | if (!(ap->host->flags & ATA_HOST_PARALLEL_SCAN) && ap->port_no != 0) | |
5712 | async_synchronize_cookie(cookie); | |
5713 | ||
5714 | (void)ata_port_probe(ap); | |
f29d3b23 AV |
5715 | |
5716 | /* in order to keep device order, we need to synchronize at this point */ | |
5717 | async_synchronize_cookie(cookie); | |
5718 | ||
5719 | ata_scsi_scan_host(ap, 1); | |
79318057 | 5720 | } |
238c9cf9 | 5721 | |
f3187195 TH |
5722 | /** |
5723 | * ata_host_register - register initialized ATA host | |
5724 | * @host: ATA host to register | |
5725 | * @sht: template for SCSI host | |
5726 | * | |
5727 | * Register initialized ATA host. @host is allocated using | |
5728 | * ata_host_alloc() and fully initialized by LLD. This function | |
5729 | * starts ports, registers @host with ATA and SCSI layers and | |
5730 | * probe registered devices. | |
5731 | * | |
5732 | * LOCKING: | |
5733 | * Inherited from calling layer (may sleep). | |
5734 | * | |
5735 | * RETURNS: | |
5736 | * 0 on success, -errno otherwise. | |
5737 | */ | |
5738 | int ata_host_register(struct ata_host *host, struct scsi_host_template *sht) | |
5739 | { | |
5740 | int i, rc; | |
5741 | ||
69278f79 | 5742 | host->n_tags = clamp(sht->can_queue, 1, ATA_MAX_QUEUE); |
1871ee13 | 5743 | |
f3187195 TH |
5744 | /* host must have been started */ |
5745 | if (!(host->flags & ATA_HOST_STARTED)) { | |
a44fec1f | 5746 | dev_err(host->dev, "BUG: trying to register unstarted host\n"); |
f3187195 TH |
5747 | WARN_ON(1); |
5748 | return -EINVAL; | |
5749 | } | |
5750 | ||
5751 | /* Blow away unused ports. This happens when LLD can't | |
5752 | * determine the exact number of ports to allocate at | |
5753 | * allocation time. | |
5754 | */ | |
5755 | for (i = host->n_ports; host->ports[i]; i++) | |
5756 | kfree(host->ports[i]); | |
5757 | ||
5758 | /* give ports names and add SCSI hosts */ | |
e628dc99 | 5759 | for (i = 0; i < host->n_ports; i++) { |
85d6725b | 5760 | host->ports[i]->print_id = atomic_inc_return(&ata_print_id); |
e628dc99 DM |
5761 | host->ports[i]->local_port_no = i + 1; |
5762 | } | |
4fca377f | 5763 | |
d9027470 GG |
5764 | /* Create associated sysfs transport objects */ |
5765 | for (i = 0; i < host->n_ports; i++) { | |
5766 | rc = ata_tport_add(host->dev,host->ports[i]); | |
5767 | if (rc) { | |
5768 | goto err_tadd; | |
5769 | } | |
5770 | } | |
5771 | ||
f3187195 TH |
5772 | rc = ata_scsi_add_hosts(host, sht); |
5773 | if (rc) | |
d9027470 | 5774 | goto err_tadd; |
f3187195 TH |
5775 | |
5776 | /* set cable, sata_spd_limit and report */ | |
5777 | for (i = 0; i < host->n_ports; i++) { | |
5778 | struct ata_port *ap = host->ports[i]; | |
f0a6d77b | 5779 | unsigned int xfer_mask; |
f3187195 TH |
5780 | |
5781 | /* set SATA cable type if still unset */ | |
5782 | if (ap->cbl == ATA_CBL_NONE && (ap->flags & ATA_FLAG_SATA)) | |
5783 | ap->cbl = ATA_CBL_SATA; | |
5784 | ||
5785 | /* init sata_spd_limit to the current value */ | |
4fb37a25 | 5786 | sata_link_init_spd(&ap->link); |
b1c72916 TH |
5787 | if (ap->slave_link) |
5788 | sata_link_init_spd(ap->slave_link); | |
f3187195 | 5789 | |
cbcdd875 | 5790 | /* print per-port info to dmesg */ |
f3187195 TH |
5791 | xfer_mask = ata_pack_xfermask(ap->pio_mask, ap->mwdma_mask, |
5792 | ap->udma_mask); | |
5793 | ||
abf6e8ed | 5794 | if (!ata_port_is_dummy(ap)) { |
a9a79dfe JP |
5795 | ata_port_info(ap, "%cATA max %s %s\n", |
5796 | (ap->flags & ATA_FLAG_SATA) ? 'S' : 'P', | |
5797 | ata_mode_string(xfer_mask), | |
5798 | ap->link.eh_info.desc); | |
abf6e8ed TH |
5799 | ata_ehi_clear_desc(&ap->link.eh_info); |
5800 | } else | |
a9a79dfe | 5801 | ata_port_info(ap, "DUMMY\n"); |
f3187195 TH |
5802 | } |
5803 | ||
f6005354 | 5804 | /* perform each probe asynchronously */ |
f3187195 TH |
5805 | for (i = 0; i < host->n_ports; i++) { |
5806 | struct ata_port *ap = host->ports[i]; | |
b5292111 | 5807 | ap->cookie = async_schedule(async_port_probe, ap); |
f3187195 | 5808 | } |
f3187195 TH |
5809 | |
5810 | return 0; | |
d9027470 GG |
5811 | |
5812 | err_tadd: | |
5813 | while (--i >= 0) { | |
5814 | ata_tport_delete(host->ports[i]); | |
5815 | } | |
5816 | return rc; | |
5817 | ||
f3187195 | 5818 | } |
a52fbcfc | 5819 | EXPORT_SYMBOL_GPL(ata_host_register); |
f3187195 | 5820 | |
f5cda257 TH |
5821 | /** |
5822 | * ata_host_activate - start host, request IRQ and register it | |
5823 | * @host: target ATA host | |
5824 | * @irq: IRQ to request | |
5825 | * @irq_handler: irq_handler used when requesting IRQ | |
5826 | * @irq_flags: irq_flags used when requesting IRQ | |
5827 | * @sht: scsi_host_template to use when registering the host | |
5828 | * | |
5829 | * After allocating an ATA host and initializing it, most libata | |
5830 | * LLDs perform three steps to activate the host - start host, | |
c9b5560a | 5831 | * request IRQ and register it. This helper takes necessary |
f5cda257 TH |
5832 | * arguments and performs the three steps in one go. |
5833 | * | |
3d46b2e2 PM |
5834 | * An invalid IRQ skips the IRQ registration and expects the host to |
5835 | * have set polling mode on the port. In this case, @irq_handler | |
5836 | * should be NULL. | |
5837 | * | |
f5cda257 TH |
5838 | * LOCKING: |
5839 | * Inherited from calling layer (may sleep). | |
5840 | * | |
5841 | * RETURNS: | |
5842 | * 0 on success, -errno otherwise. | |
5843 | */ | |
5844 | int ata_host_activate(struct ata_host *host, int irq, | |
5845 | irq_handler_t irq_handler, unsigned long irq_flags, | |
5846 | struct scsi_host_template *sht) | |
5847 | { | |
cbcdd875 | 5848 | int i, rc; |
7e22c002 | 5849 | char *irq_desc; |
f5cda257 TH |
5850 | |
5851 | rc = ata_host_start(host); | |
5852 | if (rc) | |
5853 | return rc; | |
5854 | ||
3d46b2e2 PM |
5855 | /* Special case for polling mode */ |
5856 | if (!irq) { | |
5857 | WARN_ON(irq_handler); | |
5858 | return ata_host_register(host, sht); | |
5859 | } | |
5860 | ||
7e22c002 HK |
5861 | irq_desc = devm_kasprintf(host->dev, GFP_KERNEL, "%s[%s]", |
5862 | dev_driver_string(host->dev), | |
5863 | dev_name(host->dev)); | |
5864 | if (!irq_desc) | |
5865 | return -ENOMEM; | |
5866 | ||
f5cda257 | 5867 | rc = devm_request_irq(host->dev, irq, irq_handler, irq_flags, |
7e22c002 | 5868 | irq_desc, host); |
f5cda257 TH |
5869 | if (rc) |
5870 | return rc; | |
5871 | ||
cbcdd875 TH |
5872 | for (i = 0; i < host->n_ports; i++) |
5873 | ata_port_desc(host->ports[i], "irq %d", irq); | |
4031826b | 5874 | |
f5cda257 TH |
5875 | rc = ata_host_register(host, sht); |
5876 | /* if failed, just free the IRQ and leave ports alone */ | |
5877 | if (rc) | |
5878 | devm_free_irq(host->dev, irq, host); | |
5879 | ||
5880 | return rc; | |
5881 | } | |
a52fbcfc | 5882 | EXPORT_SYMBOL_GPL(ata_host_activate); |
f5cda257 | 5883 | |
720ba126 | 5884 | /** |
c9b5560a | 5885 | * ata_port_detach - Detach ATA port in preparation of device removal |
720ba126 TH |
5886 | * @ap: ATA port to be detached |
5887 | * | |
5888 | * Detach all ATA devices and the associated SCSI devices of @ap; | |
5889 | * then, remove the associated SCSI host. @ap is guaranteed to | |
5890 | * be quiescent on return from this function. | |
5891 | * | |
5892 | * LOCKING: | |
5893 | * Kernel thread context (may sleep). | |
5894 | */ | |
741b7763 | 5895 | static void ata_port_detach(struct ata_port *ap) |
720ba126 TH |
5896 | { |
5897 | unsigned long flags; | |
a6f9bf4d LK |
5898 | struct ata_link *link; |
5899 | struct ata_device *dev; | |
720ba126 TH |
5900 | |
5901 | if (!ap->ops->error_handler) | |
c3cf30a9 | 5902 | goto skip_eh; |
720ba126 TH |
5903 | |
5904 | /* tell EH we're leaving & flush EH */ | |
ba6a1308 | 5905 | spin_lock_irqsave(ap->lock, flags); |
b51e9e5d | 5906 | ap->pflags |= ATA_PFLAG_UNLOADING; |
ece180d1 | 5907 | ata_port_schedule_eh(ap); |
ba6a1308 | 5908 | spin_unlock_irqrestore(ap->lock, flags); |
720ba126 | 5909 | |
ece180d1 | 5910 | /* wait till EH commits suicide */ |
720ba126 TH |
5911 | ata_port_wait_eh(ap); |
5912 | ||
ece180d1 TH |
5913 | /* it better be dead now */ |
5914 | WARN_ON(!(ap->pflags & ATA_PFLAG_UNLOADED)); | |
720ba126 | 5915 | |
afe2c511 | 5916 | cancel_delayed_work_sync(&ap->hotplug_task); |
720ba126 | 5917 | |
c3cf30a9 | 5918 | skip_eh: |
a6f9bf4d LK |
5919 | /* clean up zpodd on port removal */ |
5920 | ata_for_each_link(link, ap, HOST_FIRST) { | |
5921 | ata_for_each_dev(dev, link, ALL) { | |
5922 | if (zpodd_dev_enabled(dev)) | |
5923 | zpodd_exit(dev); | |
5924 | } | |
5925 | } | |
d9027470 GG |
5926 | if (ap->pmp_link) { |
5927 | int i; | |
5928 | for (i = 0; i < SATA_PMP_MAX_PORTS; i++) | |
5929 | ata_tlink_delete(&ap->pmp_link[i]); | |
5930 | } | |
720ba126 | 5931 | /* remove the associated SCSI host */ |
cca3974e | 5932 | scsi_remove_host(ap->scsi_host); |
c5700766 | 5933 | ata_tport_delete(ap); |
720ba126 TH |
5934 | } |
5935 | ||
0529c159 TH |
5936 | /** |
5937 | * ata_host_detach - Detach all ports of an ATA host | |
5938 | * @host: Host to detach | |
5939 | * | |
5940 | * Detach all ports of @host. | |
5941 | * | |
5942 | * LOCKING: | |
5943 | * Kernel thread context (may sleep). | |
5944 | */ | |
5945 | void ata_host_detach(struct ata_host *host) | |
5946 | { | |
5947 | int i; | |
5948 | ||
b5292111 KHF |
5949 | for (i = 0; i < host->n_ports; i++) { |
5950 | /* Ensure ata_port probe has completed */ | |
5951 | async_synchronize_cookie(host->ports[i]->cookie + 1); | |
0529c159 | 5952 | ata_port_detach(host->ports[i]); |
b5292111 | 5953 | } |
562f0c2d TH |
5954 | |
5955 | /* the host is dead now, dissociate ACPI */ | |
5956 | ata_acpi_dissociate(host); | |
0529c159 | 5957 | } |
a52fbcfc | 5958 | EXPORT_SYMBOL_GPL(ata_host_detach); |
0529c159 | 5959 | |
374b1873 JG |
5960 | #ifdef CONFIG_PCI |
5961 | ||
1da177e4 LT |
5962 | /** |
5963 | * ata_pci_remove_one - PCI layer callback for device removal | |
5964 | * @pdev: PCI device that was removed | |
5965 | * | |
b878ca5d TH |
5966 | * PCI layer indicates to libata via this hook that hot-unplug or |
5967 | * module unload event has occurred. Detach all ports. Resource | |
5968 | * release is handled via devres. | |
1da177e4 LT |
5969 | * |
5970 | * LOCKING: | |
5971 | * Inherited from PCI layer (may sleep). | |
5972 | */ | |
f0d36efd | 5973 | void ata_pci_remove_one(struct pci_dev *pdev) |
1da177e4 | 5974 | { |
04a3f5b7 | 5975 | struct ata_host *host = pci_get_drvdata(pdev); |
1da177e4 | 5976 | |
b878ca5d | 5977 | ata_host_detach(host); |
1da177e4 | 5978 | } |
a52fbcfc | 5979 | EXPORT_SYMBOL_GPL(ata_pci_remove_one); |
1da177e4 | 5980 | |
10a663a1 PK |
5981 | void ata_pci_shutdown_one(struct pci_dev *pdev) |
5982 | { | |
5983 | struct ata_host *host = pci_get_drvdata(pdev); | |
5984 | int i; | |
5985 | ||
5986 | for (i = 0; i < host->n_ports; i++) { | |
5987 | struct ata_port *ap = host->ports[i]; | |
5988 | ||
5989 | ap->pflags |= ATA_PFLAG_FROZEN; | |
5990 | ||
5991 | /* Disable port interrupts */ | |
5992 | if (ap->ops->freeze) | |
5993 | ap->ops->freeze(ap); | |
5994 | ||
5995 | /* Stop the port DMA engines */ | |
5996 | if (ap->ops->port_stop) | |
5997 | ap->ops->port_stop(ap); | |
5998 | } | |
5999 | } | |
a52fbcfc | 6000 | EXPORT_SYMBOL_GPL(ata_pci_shutdown_one); |
10a663a1 | 6001 | |
1da177e4 | 6002 | /* move to PCI subsystem */ |
057ace5e | 6003 | int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits) |
1da177e4 LT |
6004 | { |
6005 | unsigned long tmp = 0; | |
6006 | ||
6007 | switch (bits->width) { | |
6008 | case 1: { | |
6009 | u8 tmp8 = 0; | |
6010 | pci_read_config_byte(pdev, bits->reg, &tmp8); | |
6011 | tmp = tmp8; | |
6012 | break; | |
6013 | } | |
6014 | case 2: { | |
6015 | u16 tmp16 = 0; | |
6016 | pci_read_config_word(pdev, bits->reg, &tmp16); | |
6017 | tmp = tmp16; | |
6018 | break; | |
6019 | } | |
6020 | case 4: { | |
6021 | u32 tmp32 = 0; | |
6022 | pci_read_config_dword(pdev, bits->reg, &tmp32); | |
6023 | tmp = tmp32; | |
6024 | break; | |
6025 | } | |
6026 | ||
6027 | default: | |
6028 | return -EINVAL; | |
6029 | } | |
6030 | ||
6031 | tmp &= bits->mask; | |
6032 | ||
6033 | return (tmp == bits->val) ? 1 : 0; | |
6034 | } | |
a52fbcfc | 6035 | EXPORT_SYMBOL_GPL(pci_test_config_bits); |
9b847548 | 6036 | |
6ffa01d8 | 6037 | #ifdef CONFIG_PM |
3c5100c1 | 6038 | void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg) |
9b847548 JA |
6039 | { |
6040 | pci_save_state(pdev); | |
4c90d971 | 6041 | pci_disable_device(pdev); |
500530f6 | 6042 | |
3a2d5b70 | 6043 | if (mesg.event & PM_EVENT_SLEEP) |
500530f6 | 6044 | pci_set_power_state(pdev, PCI_D3hot); |
9b847548 | 6045 | } |
a52fbcfc | 6046 | EXPORT_SYMBOL_GPL(ata_pci_device_do_suspend); |
9b847548 | 6047 | |
553c4aa6 | 6048 | int ata_pci_device_do_resume(struct pci_dev *pdev) |
9b847548 | 6049 | { |
553c4aa6 TH |
6050 | int rc; |
6051 | ||
9b847548 JA |
6052 | pci_set_power_state(pdev, PCI_D0); |
6053 | pci_restore_state(pdev); | |
553c4aa6 | 6054 | |
b878ca5d | 6055 | rc = pcim_enable_device(pdev); |
553c4aa6 | 6056 | if (rc) { |
a44fec1f JP |
6057 | dev_err(&pdev->dev, |
6058 | "failed to enable device after resume (%d)\n", rc); | |
553c4aa6 TH |
6059 | return rc; |
6060 | } | |
6061 | ||
9b847548 | 6062 | pci_set_master(pdev); |
553c4aa6 | 6063 | return 0; |
500530f6 | 6064 | } |
a52fbcfc | 6065 | EXPORT_SYMBOL_GPL(ata_pci_device_do_resume); |
500530f6 | 6066 | |
3c5100c1 | 6067 | int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg) |
500530f6 | 6068 | { |
04a3f5b7 | 6069 | struct ata_host *host = pci_get_drvdata(pdev); |
500530f6 | 6070 | |
ec87cf37 | 6071 | ata_host_suspend(host, mesg); |
500530f6 | 6072 | |
3c5100c1 | 6073 | ata_pci_device_do_suspend(pdev, mesg); |
500530f6 TH |
6074 | |
6075 | return 0; | |
6076 | } | |
a52fbcfc | 6077 | EXPORT_SYMBOL_GPL(ata_pci_device_suspend); |
500530f6 TH |
6078 | |
6079 | int ata_pci_device_resume(struct pci_dev *pdev) | |
6080 | { | |
04a3f5b7 | 6081 | struct ata_host *host = pci_get_drvdata(pdev); |
553c4aa6 | 6082 | int rc; |
500530f6 | 6083 | |
553c4aa6 TH |
6084 | rc = ata_pci_device_do_resume(pdev); |
6085 | if (rc == 0) | |
6086 | ata_host_resume(host); | |
6087 | return rc; | |
9b847548 | 6088 | } |
a52fbcfc | 6089 | EXPORT_SYMBOL_GPL(ata_pci_device_resume); |
6ffa01d8 | 6090 | #endif /* CONFIG_PM */ |
1da177e4 LT |
6091 | #endif /* CONFIG_PCI */ |
6092 | ||
b7db04d9 BN |
6093 | /** |
6094 | * ata_platform_remove_one - Platform layer callback for device removal | |
6095 | * @pdev: Platform device that was removed | |
6096 | * | |
6097 | * Platform layer indicates to libata via this hook that hot-unplug or | |
6098 | * module unload event has occurred. Detach all ports. Resource | |
6099 | * release is handled via devres. | |
6100 | * | |
6101 | * LOCKING: | |
6102 | * Inherited from platform layer (may sleep). | |
6103 | */ | |
6104 | int ata_platform_remove_one(struct platform_device *pdev) | |
6105 | { | |
6106 | struct ata_host *host = platform_get_drvdata(pdev); | |
6107 | ||
6108 | ata_host_detach(host); | |
6109 | ||
6110 | return 0; | |
6111 | } | |
a52fbcfc | 6112 | EXPORT_SYMBOL_GPL(ata_platform_remove_one); |
b7db04d9 | 6113 | |
bf89b0bf | 6114 | #ifdef CONFIG_ATA_FORCE |
168af4af DLM |
6115 | |
6116 | #define force_cbl(name, flag) \ | |
6117 | { #name, .cbl = (flag) } | |
6118 | ||
6119 | #define force_spd_limit(spd, val) \ | |
6120 | { #spd, .spd_limit = (val) } | |
6121 | ||
6122 | #define force_xfer(mode, shift) \ | |
6123 | { #mode, .xfer_mask = (1UL << (shift)) } | |
6124 | ||
3af9ca4d DLM |
6125 | #define force_lflag_on(name, flags) \ |
6126 | { #name, .lflags_on = (flags) } | |
6127 | ||
6128 | #define force_lflag_onoff(name, flags) \ | |
6129 | { "no" #name, .lflags_on = (flags) }, \ | |
6130 | { #name, .lflags_off = (flags) } | |
168af4af DLM |
6131 | |
6132 | #define force_horkage_on(name, flag) \ | |
6133 | { #name, .horkage_on = (flag) } | |
6134 | ||
6135 | #define force_horkage_onoff(name, flag) \ | |
6136 | { "no" #name, .horkage_on = (flag) }, \ | |
6137 | { #name, .horkage_off = (flag) } | |
6138 | ||
6139 | static const struct ata_force_param force_tbl[] __initconst = { | |
6140 | force_cbl(40c, ATA_CBL_PATA40), | |
6141 | force_cbl(80c, ATA_CBL_PATA80), | |
6142 | force_cbl(short40c, ATA_CBL_PATA40_SHORT), | |
6143 | force_cbl(unk, ATA_CBL_PATA_UNK), | |
6144 | force_cbl(ign, ATA_CBL_PATA_IGN), | |
6145 | force_cbl(sata, ATA_CBL_SATA), | |
6146 | ||
6147 | force_spd_limit(1.5Gbps, 1), | |
6148 | force_spd_limit(3.0Gbps, 2), | |
6149 | ||
6150 | force_xfer(pio0, ATA_SHIFT_PIO + 0), | |
6151 | force_xfer(pio1, ATA_SHIFT_PIO + 1), | |
6152 | force_xfer(pio2, ATA_SHIFT_PIO + 2), | |
6153 | force_xfer(pio3, ATA_SHIFT_PIO + 3), | |
6154 | force_xfer(pio4, ATA_SHIFT_PIO + 4), | |
6155 | force_xfer(pio5, ATA_SHIFT_PIO + 5), | |
6156 | force_xfer(pio6, ATA_SHIFT_PIO + 6), | |
6157 | force_xfer(mwdma0, ATA_SHIFT_MWDMA + 0), | |
6158 | force_xfer(mwdma1, ATA_SHIFT_MWDMA + 1), | |
6159 | force_xfer(mwdma2, ATA_SHIFT_MWDMA + 2), | |
6160 | force_xfer(mwdma3, ATA_SHIFT_MWDMA + 3), | |
6161 | force_xfer(mwdma4, ATA_SHIFT_MWDMA + 4), | |
6162 | force_xfer(udma0, ATA_SHIFT_UDMA + 0), | |
6163 | force_xfer(udma16, ATA_SHIFT_UDMA + 0), | |
6164 | force_xfer(udma/16, ATA_SHIFT_UDMA + 0), | |
6165 | force_xfer(udma1, ATA_SHIFT_UDMA + 1), | |
6166 | force_xfer(udma25, ATA_SHIFT_UDMA + 1), | |
6167 | force_xfer(udma/25, ATA_SHIFT_UDMA + 1), | |
6168 | force_xfer(udma2, ATA_SHIFT_UDMA + 2), | |
6169 | force_xfer(udma33, ATA_SHIFT_UDMA + 2), | |
6170 | force_xfer(udma/33, ATA_SHIFT_UDMA + 2), | |
6171 | force_xfer(udma3, ATA_SHIFT_UDMA + 3), | |
6172 | force_xfer(udma44, ATA_SHIFT_UDMA + 3), | |
6173 | force_xfer(udma/44, ATA_SHIFT_UDMA + 3), | |
6174 | force_xfer(udma4, ATA_SHIFT_UDMA + 4), | |
6175 | force_xfer(udma66, ATA_SHIFT_UDMA + 4), | |
6176 | force_xfer(udma/66, ATA_SHIFT_UDMA + 4), | |
6177 | force_xfer(udma5, ATA_SHIFT_UDMA + 5), | |
6178 | force_xfer(udma100, ATA_SHIFT_UDMA + 5), | |
6179 | force_xfer(udma/100, ATA_SHIFT_UDMA + 5), | |
6180 | force_xfer(udma6, ATA_SHIFT_UDMA + 6), | |
6181 | force_xfer(udma133, ATA_SHIFT_UDMA + 6), | |
6182 | force_xfer(udma/133, ATA_SHIFT_UDMA + 6), | |
6183 | force_xfer(udma7, ATA_SHIFT_UDMA + 7), | |
6184 | ||
3af9ca4d DLM |
6185 | force_lflag_on(nohrst, ATA_LFLAG_NO_HRST), |
6186 | force_lflag_on(nosrst, ATA_LFLAG_NO_SRST), | |
6187 | force_lflag_on(norst, ATA_LFLAG_NO_HRST | ATA_LFLAG_NO_SRST), | |
6188 | force_lflag_on(rstonce, ATA_LFLAG_RST_ONCE), | |
6189 | force_lflag_onoff(dbdelay, ATA_LFLAG_NO_DEBOUNCE_DELAY), | |
168af4af DLM |
6190 | |
6191 | force_horkage_onoff(ncq, ATA_HORKAGE_NONCQ), | |
6192 | force_horkage_onoff(ncqtrim, ATA_HORKAGE_NO_NCQ_TRIM), | |
6193 | force_horkage_onoff(ncqati, ATA_HORKAGE_NO_NCQ_ON_ATI), | |
6194 | ||
2c33bbda DLM |
6195 | force_horkage_onoff(trim, ATA_HORKAGE_NOTRIM), |
6196 | force_horkage_on(trim_zero, ATA_HORKAGE_ZERO_AFTER_TRIM), | |
6197 | force_horkage_on(max_trim_128m, ATA_HORKAGE_MAX_TRIM_128M), | |
6198 | ||
6199 | force_horkage_onoff(dma, ATA_HORKAGE_NODMA), | |
168af4af | 6200 | force_horkage_on(atapi_dmadir, ATA_HORKAGE_ATAPI_DMADIR), |
2c33bbda DLM |
6201 | force_horkage_on(atapi_mod16_dma, ATA_HORKAGE_ATAPI_MOD16_DMA), |
6202 | ||
6203 | force_horkage_onoff(dmalog, ATA_HORKAGE_NO_DMA_LOG), | |
6204 | force_horkage_onoff(iddevlog, ATA_HORKAGE_NO_ID_DEV_LOG), | |
6205 | force_horkage_onoff(logdir, ATA_HORKAGE_NO_LOG_DIR), | |
6206 | ||
6207 | force_horkage_on(max_sec_128, ATA_HORKAGE_MAX_SEC_128), | |
6208 | force_horkage_on(max_sec_1024, ATA_HORKAGE_MAX_SEC_1024), | |
6209 | force_horkage_on(max_sec_lba48, ATA_HORKAGE_MAX_SEC_LBA48), | |
6210 | ||
6211 | force_horkage_onoff(lpm, ATA_HORKAGE_NOLPM), | |
6212 | force_horkage_onoff(setxfer, ATA_HORKAGE_NOSETXFER), | |
6213 | force_horkage_on(dump_id, ATA_HORKAGE_DUMP_ID), | |
6214 | ||
6215 | force_horkage_on(disable, ATA_HORKAGE_DISABLE), | |
168af4af DLM |
6216 | }; |
6217 | ||
33267325 TH |
6218 | static int __init ata_parse_force_one(char **cur, |
6219 | struct ata_force_ent *force_ent, | |
6220 | const char **reason) | |
6221 | { | |
33267325 TH |
6222 | char *start = *cur, *p = *cur; |
6223 | char *id, *val, *endp; | |
6224 | const struct ata_force_param *match_fp = NULL; | |
6225 | int nr_matches = 0, i; | |
6226 | ||
6227 | /* find where this param ends and update *cur */ | |
6228 | while (*p != '\0' && *p != ',') | |
6229 | p++; | |
6230 | ||
6231 | if (*p == '\0') | |
6232 | *cur = p; | |
6233 | else | |
6234 | *cur = p + 1; | |
6235 | ||
6236 | *p = '\0'; | |
6237 | ||
6238 | /* parse */ | |
6239 | p = strchr(start, ':'); | |
6240 | if (!p) { | |
6241 | val = strstrip(start); | |
6242 | goto parse_val; | |
6243 | } | |
6244 | *p = '\0'; | |
6245 | ||
6246 | id = strstrip(start); | |
6247 | val = strstrip(p + 1); | |
6248 | ||
6249 | /* parse id */ | |
6250 | p = strchr(id, '.'); | |
6251 | if (p) { | |
6252 | *p++ = '\0'; | |
6253 | force_ent->device = simple_strtoul(p, &endp, 10); | |
6254 | if (p == endp || *endp != '\0') { | |
6255 | *reason = "invalid device"; | |
6256 | return -EINVAL; | |
6257 | } | |
6258 | } | |
6259 | ||
6260 | force_ent->port = simple_strtoul(id, &endp, 10); | |
f7cf69ae | 6261 | if (id == endp || *endp != '\0') { |
33267325 TH |
6262 | *reason = "invalid port/link"; |
6263 | return -EINVAL; | |
6264 | } | |
6265 | ||
6266 | parse_val: | |
6267 | /* parse val, allow shortcuts so that both 1.5 and 1.5Gbps work */ | |
6268 | for (i = 0; i < ARRAY_SIZE(force_tbl); i++) { | |
6269 | const struct ata_force_param *fp = &force_tbl[i]; | |
6270 | ||
6271 | if (strncasecmp(val, fp->name, strlen(val))) | |
6272 | continue; | |
6273 | ||
6274 | nr_matches++; | |
6275 | match_fp = fp; | |
6276 | ||
6277 | if (strcasecmp(val, fp->name) == 0) { | |
6278 | nr_matches = 1; | |
6279 | break; | |
6280 | } | |
6281 | } | |
6282 | ||
6283 | if (!nr_matches) { | |
6284 | *reason = "unknown value"; | |
6285 | return -EINVAL; | |
6286 | } | |
6287 | if (nr_matches > 1) { | |
9de55351 | 6288 | *reason = "ambiguous value"; |
33267325 TH |
6289 | return -EINVAL; |
6290 | } | |
6291 | ||
6292 | force_ent->param = *match_fp; | |
6293 | ||
6294 | return 0; | |
6295 | } | |
6296 | ||
6297 | static void __init ata_parse_force_param(void) | |
6298 | { | |
6299 | int idx = 0, size = 1; | |
6300 | int last_port = -1, last_device = -1; | |
6301 | char *p, *cur, *next; | |
6302 | ||
168af4af | 6303 | /* Calculate maximum number of params and allocate ata_force_tbl */ |
33267325 TH |
6304 | for (p = ata_force_param_buf; *p; p++) |
6305 | if (*p == ',') | |
6306 | size++; | |
6307 | ||
6396bb22 | 6308 | ata_force_tbl = kcalloc(size, sizeof(ata_force_tbl[0]), GFP_KERNEL); |
33267325 TH |
6309 | if (!ata_force_tbl) { |
6310 | printk(KERN_WARNING "ata: failed to extend force table, " | |
6311 | "libata.force ignored\n"); | |
6312 | return; | |
6313 | } | |
6314 | ||
6315 | /* parse and populate the table */ | |
6316 | for (cur = ata_force_param_buf; *cur != '\0'; cur = next) { | |
6317 | const char *reason = ""; | |
6318 | struct ata_force_ent te = { .port = -1, .device = -1 }; | |
6319 | ||
6320 | next = cur; | |
6321 | if (ata_parse_force_one(&next, &te, &reason)) { | |
6322 | printk(KERN_WARNING "ata: failed to parse force " | |
6323 | "parameter \"%s\" (%s)\n", | |
6324 | cur, reason); | |
6325 | continue; | |
6326 | } | |
6327 | ||
6328 | if (te.port == -1) { | |
6329 | te.port = last_port; | |
6330 | te.device = last_device; | |
6331 | } | |
6332 | ||
6333 | ata_force_tbl[idx++] = te; | |
6334 | ||
6335 | last_port = te.port; | |
6336 | last_device = te.device; | |
6337 | } | |
6338 | ||
6339 | ata_force_tbl_size = idx; | |
6340 | } | |
1da177e4 | 6341 | |
bf89b0bf BZ |
6342 | static void ata_free_force_param(void) |
6343 | { | |
6344 | kfree(ata_force_tbl); | |
6345 | } | |
6346 | #else | |
6347 | static inline void ata_parse_force_param(void) { } | |
6348 | static inline void ata_free_force_param(void) { } | |
6349 | #endif | |
6350 | ||
1da177e4 LT |
6351 | static int __init ata_init(void) |
6352 | { | |
d9027470 | 6353 | int rc; |
270390e1 | 6354 | |
33267325 TH |
6355 | ata_parse_force_param(); |
6356 | ||
270390e1 | 6357 | rc = ata_sff_init(); |
ad72cf98 | 6358 | if (rc) { |
bf89b0bf | 6359 | ata_free_force_param(); |
ad72cf98 TH |
6360 | return rc; |
6361 | } | |
453b07ac | 6362 | |
d9027470 GG |
6363 | libata_transport_init(); |
6364 | ata_scsi_transport_template = ata_attach_transport(); | |
6365 | if (!ata_scsi_transport_template) { | |
6366 | ata_sff_exit(); | |
6367 | rc = -ENOMEM; | |
6368 | goto err_out; | |
4fca377f | 6369 | } |
d9027470 | 6370 | |
1da177e4 LT |
6371 | printk(KERN_DEBUG "libata version " DRV_VERSION " loaded.\n"); |
6372 | return 0; | |
d9027470 GG |
6373 | |
6374 | err_out: | |
6375 | return rc; | |
1da177e4 LT |
6376 | } |
6377 | ||
6378 | static void __exit ata_exit(void) | |
6379 | { | |
d9027470 GG |
6380 | ata_release_transport(ata_scsi_transport_template); |
6381 | libata_transport_exit(); | |
270390e1 | 6382 | ata_sff_exit(); |
bf89b0bf | 6383 | ata_free_force_param(); |
1da177e4 LT |
6384 | } |
6385 | ||
a4625085 | 6386 | subsys_initcall(ata_init); |
1da177e4 LT |
6387 | module_exit(ata_exit); |
6388 | ||
9990b6f3 | 6389 | static DEFINE_RATELIMIT_STATE(ratelimit, HZ / 5, 1); |
67846b30 JG |
6390 | |
6391 | int ata_ratelimit(void) | |
6392 | { | |
9990b6f3 | 6393 | return __ratelimit(&ratelimit); |
67846b30 | 6394 | } |
a52fbcfc | 6395 | EXPORT_SYMBOL_GPL(ata_ratelimit); |
67846b30 | 6396 | |
c0c362b6 TH |
6397 | /** |
6398 | * ata_msleep - ATA EH owner aware msleep | |
6399 | * @ap: ATA port to attribute the sleep to | |
6400 | * @msecs: duration to sleep in milliseconds | |
6401 | * | |
6402 | * Sleeps @msecs. If the current task is owner of @ap's EH, the | |
6403 | * ownership is released before going to sleep and reacquired | |
6404 | * after the sleep is complete. IOW, other ports sharing the | |
6405 | * @ap->host will be allowed to own the EH while this task is | |
6406 | * sleeping. | |
6407 | * | |
6408 | * LOCKING: | |
6409 | * Might sleep. | |
6410 | */ | |
97750ceb TH |
6411 | void ata_msleep(struct ata_port *ap, unsigned int msecs) |
6412 | { | |
c0c362b6 TH |
6413 | bool owns_eh = ap && ap->host->eh_owner == current; |
6414 | ||
6415 | if (owns_eh) | |
6416 | ata_eh_release(ap); | |
6417 | ||
848c3920 AVM |
6418 | if (msecs < 20) { |
6419 | unsigned long usecs = msecs * USEC_PER_MSEC; | |
6420 | usleep_range(usecs, usecs + 50); | |
6421 | } else { | |
6422 | msleep(msecs); | |
6423 | } | |
c0c362b6 TH |
6424 | |
6425 | if (owns_eh) | |
6426 | ata_eh_acquire(ap); | |
97750ceb | 6427 | } |
a52fbcfc | 6428 | EXPORT_SYMBOL_GPL(ata_msleep); |
97750ceb | 6429 | |
c22daff4 TH |
6430 | /** |
6431 | * ata_wait_register - wait until register value changes | |
97750ceb | 6432 | * @ap: ATA port to wait register for, can be NULL |
c22daff4 TH |
6433 | * @reg: IO-mapped register |
6434 | * @mask: Mask to apply to read register value | |
6435 | * @val: Wait condition | |
341c2c95 TH |
6436 | * @interval: polling interval in milliseconds |
6437 | * @timeout: timeout in milliseconds | |
c22daff4 TH |
6438 | * |
6439 | * Waiting for some bits of register to change is a common | |
6440 | * operation for ATA controllers. This function reads 32bit LE | |
6441 | * IO-mapped register @reg and tests for the following condition. | |
6442 | * | |
6443 | * (*@reg & mask) != val | |
6444 | * | |
6445 | * If the condition is met, it returns; otherwise, the process is | |
6446 | * repeated after @interval_msec until timeout. | |
6447 | * | |
6448 | * LOCKING: | |
6449 | * Kernel thread context (may sleep) | |
6450 | * | |
6451 | * RETURNS: | |
6452 | * The final register value. | |
6453 | */ | |
97750ceb | 6454 | u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask, u32 val, |
341c2c95 | 6455 | unsigned long interval, unsigned long timeout) |
c22daff4 | 6456 | { |
341c2c95 | 6457 | unsigned long deadline; |
c22daff4 TH |
6458 | u32 tmp; |
6459 | ||
6460 | tmp = ioread32(reg); | |
6461 | ||
6462 | /* Calculate timeout _after_ the first read to make sure | |
6463 | * preceding writes reach the controller before starting to | |
6464 | * eat away the timeout. | |
6465 | */ | |
341c2c95 | 6466 | deadline = ata_deadline(jiffies, timeout); |
c22daff4 | 6467 | |
341c2c95 | 6468 | while ((tmp & mask) == val && time_before(jiffies, deadline)) { |
97750ceb | 6469 | ata_msleep(ap, interval); |
c22daff4 TH |
6470 | tmp = ioread32(reg); |
6471 | } | |
6472 | ||
6473 | return tmp; | |
6474 | } | |
a52fbcfc | 6475 | EXPORT_SYMBOL_GPL(ata_wait_register); |
c22daff4 | 6476 | |
dd5b06c4 TH |
6477 | /* |
6478 | * Dummy port_ops | |
6479 | */ | |
182d7bba | 6480 | static unsigned int ata_dummy_qc_issue(struct ata_queued_cmd *qc) |
dd5b06c4 | 6481 | { |
182d7bba | 6482 | return AC_ERR_SYSTEM; |
dd5b06c4 TH |
6483 | } |
6484 | ||
182d7bba | 6485 | static void ata_dummy_error_handler(struct ata_port *ap) |
dd5b06c4 | 6486 | { |
182d7bba | 6487 | /* truly dummy */ |
dd5b06c4 TH |
6488 | } |
6489 | ||
029cfd6b | 6490 | struct ata_port_operations ata_dummy_port_ops = { |
dd5b06c4 TH |
6491 | .qc_prep = ata_noop_qc_prep, |
6492 | .qc_issue = ata_dummy_qc_issue, | |
182d7bba | 6493 | .error_handler = ata_dummy_error_handler, |
e4a9c373 DW |
6494 | .sched_eh = ata_std_sched_eh, |
6495 | .end_eh = ata_std_end_eh, | |
dd5b06c4 | 6496 | }; |
a52fbcfc | 6497 | EXPORT_SYMBOL_GPL(ata_dummy_port_ops); |
dd5b06c4 | 6498 | |
21b0ad4f TH |
6499 | const struct ata_port_info ata_dummy_port_info = { |
6500 | .port_ops = &ata_dummy_port_ops, | |
6501 | }; | |
a52fbcfc | 6502 | EXPORT_SYMBOL_GPL(ata_dummy_port_info); |
21b0ad4f | 6503 | |
06296a1e JP |
6504 | void ata_print_version(const struct device *dev, const char *version) |
6505 | { | |
6506 | dev_printk(KERN_DEBUG, dev, "version %s\n", version); | |
6507 | } | |
6508 | EXPORT_SYMBOL(ata_print_version); | |
c206a389 HR |
6509 | |
6510 | EXPORT_TRACEPOINT_SYMBOL_GPL(ata_tf_load); | |
6511 | EXPORT_TRACEPOINT_SYMBOL_GPL(ata_exec_command); | |
6512 | EXPORT_TRACEPOINT_SYMBOL_GPL(ata_bmdma_setup); | |
6513 | EXPORT_TRACEPOINT_SYMBOL_GPL(ata_bmdma_start); | |
6514 | EXPORT_TRACEPOINT_SYMBOL_GPL(ata_bmdma_status); |