Commit | Line | Data |
---|---|---|
115bb1ff MW |
1 | /* |
2 | * USB Attached SCSI | |
3 | * Note that this is not the same as the USB Mass Storage driver | |
4 | * | |
5df2be63 | 5 | * Copyright Hans de Goede <hdegoede@redhat.com> for Red Hat, Inc. 2013 - 2014 |
115bb1ff MW |
6 | * Copyright Matthew Wilcox for Intel Corp, 2010 |
7 | * Copyright Sarah Sharp for Intel Corp, 2010 | |
8 | * | |
9 | * Distributed under the terms of the GNU GPL, version two. | |
10 | */ | |
11 | ||
12 | #include <linux/blkdev.h> | |
13 | #include <linux/slab.h> | |
14 | #include <linux/types.h> | |
6eb0de82 | 15 | #include <linux/module.h> |
115bb1ff | 16 | #include <linux/usb.h> |
79b4c061 | 17 | #include <linux/usb_usual.h> |
c898add5 | 18 | #include <linux/usb/hcd.h> |
115bb1ff | 19 | #include <linux/usb/storage.h> |
348748b0 | 20 | #include <linux/usb/uas.h> |
115bb1ff MW |
21 | |
22 | #include <scsi/scsi.h> | |
4de7a373 | 23 | #include <scsi/scsi_eh.h> |
115bb1ff MW |
24 | #include <scsi/scsi_dbg.h> |
25 | #include <scsi/scsi_cmnd.h> | |
26 | #include <scsi/scsi_device.h> | |
27 | #include <scsi/scsi_host.h> | |
28 | #include <scsi/scsi_tcq.h> | |
29 | ||
82aa0387 | 30 | #include "uas-detect.h" |
59307852 | 31 | #include "scsiglue.h" |
82aa0387 | 32 | |
5e61aede HG |
33 | #define MAX_CMNDS 256 |
34 | ||
115bb1ff MW |
35 | /* |
36 | * The r00-r01c specs define this version of the SENSE IU data structure. | |
37 | * It's still in use by several different firmware releases. | |
38 | */ | |
39 | struct sense_iu_old { | |
40 | __u8 iu_id; | |
41 | __u8 rsvd1; | |
42 | __be16 tag; | |
43 | __be16 len; | |
44 | __u8 status; | |
45 | __u8 service_response; | |
46 | __u8 sense[SCSI_SENSE_BUFFERSIZE]; | |
47 | }; | |
48 | ||
115bb1ff MW |
49 | struct uas_dev_info { |
50 | struct usb_interface *intf; | |
51 | struct usb_device *udev; | |
a0e39e34 | 52 | struct usb_anchor cmd_urbs; |
bdd000fb GH |
53 | struct usb_anchor sense_urbs; |
54 | struct usb_anchor data_urbs; | |
59307852 | 55 | unsigned long flags; |
023b515e | 56 | int qdepth, resetting; |
115bb1ff MW |
57 | unsigned cmd_pipe, status_pipe, data_in_pipe, data_out_pipe; |
58 | unsigned use_streams:1; | |
59 | unsigned uas_sense_old:1; | |
da65c2bb | 60 | unsigned shutdown:1; |
5e61aede | 61 | struct scsi_cmnd *cmnd[MAX_CMNDS]; |
e0648520 | 62 | spinlock_t lock; |
1bf8198e | 63 | struct work_struct work; |
61c09ce5 | 64 | struct list_head inflight_list; |
326349f8 | 65 | struct list_head dead_list; |
115bb1ff MW |
66 | }; |
67 | ||
68 | enum { | |
92a3f767 | 69 | SUBMIT_STATUS_URB = (1 << 1), |
115bb1ff MW |
70 | ALLOC_DATA_IN_URB = (1 << 2), |
71 | SUBMIT_DATA_IN_URB = (1 << 3), | |
72 | ALLOC_DATA_OUT_URB = (1 << 4), | |
73 | SUBMIT_DATA_OUT_URB = (1 << 5), | |
74 | ALLOC_CMD_URB = (1 << 6), | |
75 | SUBMIT_CMD_URB = (1 << 7), | |
b1d67693 GH |
76 | COMMAND_INFLIGHT = (1 << 8), |
77 | DATA_IN_URB_INFLIGHT = (1 << 9), | |
78 | DATA_OUT_URB_INFLIGHT = (1 << 10), | |
79 | COMMAND_COMPLETED = (1 << 11), | |
ef018cc9 | 80 | COMMAND_ABORTED = (1 << 12), |
60d9f67d | 81 | IS_IN_WORK_LIST = (1 << 13), |
115bb1ff MW |
82 | }; |
83 | ||
84 | /* Overrides scsi_pointer */ | |
85 | struct uas_cmd_info { | |
86 | unsigned int state; | |
87 | unsigned int stream; | |
88 | struct urb *cmd_urb; | |
115bb1ff MW |
89 | struct urb *data_in_urb; |
90 | struct urb *data_out_urb; | |
040d1a8f | 91 | struct list_head list; |
115bb1ff MW |
92 | }; |
93 | ||
94 | /* I hate forward declarations, but I actually have a loop */ | |
95 | static int uas_submit_urbs(struct scsi_cmnd *cmnd, | |
96 | struct uas_dev_info *devinfo, gfp_t gfp); | |
ea9da1c7 | 97 | static void uas_do_work(struct work_struct *work); |
4c456971 | 98 | static int uas_try_complete(struct scsi_cmnd *cmnd, const char *caller); |
d89bd835 | 99 | static void uas_free_streams(struct uas_dev_info *devinfo); |
326349f8 | 100 | static void uas_log_cmd_state(struct scsi_cmnd *cmnd, const char *caller); |
115bb1ff | 101 | |
115bb1ff MW |
102 | static void uas_do_work(struct work_struct *work) |
103 | { | |
1bf8198e GH |
104 | struct uas_dev_info *devinfo = |
105 | container_of(work, struct uas_dev_info, work); | |
115bb1ff | 106 | struct uas_cmd_info *cmdinfo; |
e0648520 | 107 | unsigned long flags; |
ea9da1c7 | 108 | int err; |
115bb1ff | 109 | |
1bf8198e | 110 | spin_lock_irqsave(&devinfo->lock, flags); |
b7b5d11f HG |
111 | |
112 | if (devinfo->resetting) | |
113 | goto out; | |
114 | ||
040d1a8f | 115 | list_for_each_entry(cmdinfo, &devinfo->inflight_list, list) { |
115bb1ff | 116 | struct scsi_pointer *scp = (void *)cmdinfo; |
1bf8198e GH |
117 | struct scsi_cmnd *cmnd = container_of(scp, struct scsi_cmnd, |
118 | SCp); | |
61c09ce5 HG |
119 | |
120 | if (!(cmdinfo->state & IS_IN_WORK_LIST)) | |
121 | continue; | |
122 | ||
e7eda932 | 123 | err = uas_submit_urbs(cmnd, cmnd->device->hostdata, GFP_ATOMIC); |
61c09ce5 | 124 | if (!err) |
efefecf3 | 125 | cmdinfo->state &= ~IS_IN_WORK_LIST; |
61c09ce5 | 126 | else |
1bf8198e | 127 | schedule_work(&devinfo->work); |
115bb1ff | 128 | } |
b7b5d11f | 129 | out: |
1bf8198e | 130 | spin_unlock_irqrestore(&devinfo->lock, flags); |
115bb1ff MW |
131 | } |
132 | ||
da3033ea | 133 | static void uas_mark_cmd_dead(struct uas_dev_info *devinfo, |
673331c8 HG |
134 | struct uas_cmd_info *cmdinfo, |
135 | int result, const char *caller) | |
da3033ea HG |
136 | { |
137 | struct scsi_pointer *scp = (void *)cmdinfo; | |
138 | struct scsi_cmnd *cmnd = container_of(scp, struct scsi_cmnd, SCp); | |
139 | ||
140 | uas_log_cmd_state(cmnd, caller); | |
ab945eff | 141 | lockdep_assert_held(&devinfo->lock); |
da3033ea HG |
142 | WARN_ON_ONCE(cmdinfo->state & COMMAND_ABORTED); |
143 | cmdinfo->state |= COMMAND_ABORTED; | |
144 | cmdinfo->state &= ~IS_IN_WORK_LIST; | |
673331c8 | 145 | cmnd->result = result << 16; |
040d1a8f | 146 | list_move_tail(&cmdinfo->list, &devinfo->dead_list); |
da3033ea HG |
147 | } |
148 | ||
673331c8 HG |
149 | static void uas_abort_inflight(struct uas_dev_info *devinfo, int result, |
150 | const char *caller) | |
4c456971 GH |
151 | { |
152 | struct uas_cmd_info *cmdinfo; | |
153 | struct uas_cmd_info *temp; | |
4c456971 GH |
154 | unsigned long flags; |
155 | ||
4c456971 | 156 | spin_lock_irqsave(&devinfo->lock, flags); |
040d1a8f | 157 | list_for_each_entry_safe(cmdinfo, temp, &devinfo->inflight_list, list) |
673331c8 | 158 | uas_mark_cmd_dead(devinfo, cmdinfo, result, caller); |
4c456971 GH |
159 | spin_unlock_irqrestore(&devinfo->lock, flags); |
160 | } | |
161 | ||
1bf8198e GH |
162 | static void uas_add_work(struct uas_cmd_info *cmdinfo) |
163 | { | |
164 | struct scsi_pointer *scp = (void *)cmdinfo; | |
165 | struct scsi_cmnd *cmnd = container_of(scp, struct scsi_cmnd, SCp); | |
166 | struct uas_dev_info *devinfo = cmnd->device->hostdata; | |
167 | ||
ab945eff | 168 | lockdep_assert_held(&devinfo->lock); |
1bf8198e GH |
169 | cmdinfo->state |= IS_IN_WORK_LIST; |
170 | schedule_work(&devinfo->work); | |
171 | } | |
172 | ||
326349f8 GH |
173 | static void uas_zap_dead(struct uas_dev_info *devinfo) |
174 | { | |
175 | struct uas_cmd_info *cmdinfo; | |
176 | struct uas_cmd_info *temp; | |
177 | unsigned long flags; | |
178 | ||
179 | spin_lock_irqsave(&devinfo->lock, flags); | |
040d1a8f | 180 | list_for_each_entry_safe(cmdinfo, temp, &devinfo->dead_list, list) { |
326349f8 GH |
181 | struct scsi_pointer *scp = (void *)cmdinfo; |
182 | struct scsi_cmnd *cmnd = container_of(scp, struct scsi_cmnd, | |
183 | SCp); | |
184 | uas_log_cmd_state(cmnd, __func__); | |
f491ecbb | 185 | WARN_ON_ONCE(!(cmdinfo->state & COMMAND_ABORTED)); |
326349f8 GH |
186 | /* all urbs are killed, clear inflight bits */ |
187 | cmdinfo->state &= ~(COMMAND_INFLIGHT | | |
188 | DATA_IN_URB_INFLIGHT | | |
189 | DATA_OUT_URB_INFLIGHT); | |
190 | uas_try_complete(cmnd, __func__); | |
191 | } | |
192 | spin_unlock_irqrestore(&devinfo->lock, flags); | |
193 | } | |
194 | ||
115bb1ff MW |
195 | static void uas_sense(struct urb *urb, struct scsi_cmnd *cmnd) |
196 | { | |
197 | struct sense_iu *sense_iu = urb->transfer_buffer; | |
198 | struct scsi_device *sdev = cmnd->device; | |
199 | ||
200 | if (urb->actual_length > 16) { | |
201 | unsigned len = be16_to_cpup(&sense_iu->len); | |
202 | if (len + 16 != urb->actual_length) { | |
203 | int newlen = min(len + 16, urb->actual_length) - 16; | |
204 | if (newlen < 0) | |
205 | newlen = 0; | |
206 | sdev_printk(KERN_INFO, sdev, "%s: urb length %d " | |
207 | "disagrees with IU sense data length %d, " | |
208 | "using %d bytes of sense data\n", __func__, | |
209 | urb->actual_length, len, newlen); | |
210 | len = newlen; | |
211 | } | |
212 | memcpy(cmnd->sense_buffer, sense_iu->sense, len); | |
213 | } | |
214 | ||
215 | cmnd->result = sense_iu->status; | |
115bb1ff MW |
216 | } |
217 | ||
218 | static void uas_sense_old(struct urb *urb, struct scsi_cmnd *cmnd) | |
219 | { | |
220 | struct sense_iu_old *sense_iu = urb->transfer_buffer; | |
221 | struct scsi_device *sdev = cmnd->device; | |
222 | ||
223 | if (urb->actual_length > 8) { | |
224 | unsigned len = be16_to_cpup(&sense_iu->len) - 2; | |
225 | if (len + 8 != urb->actual_length) { | |
226 | int newlen = min(len + 8, urb->actual_length) - 8; | |
227 | if (newlen < 0) | |
228 | newlen = 0; | |
229 | sdev_printk(KERN_INFO, sdev, "%s: urb length %d " | |
230 | "disagrees with IU sense data length %d, " | |
231 | "using %d bytes of sense data\n", __func__, | |
232 | urb->actual_length, len, newlen); | |
233 | len = newlen; | |
234 | } | |
235 | memcpy(cmnd->sense_buffer, sense_iu->sense, len); | |
236 | } | |
237 | ||
238 | cmnd->result = sense_iu->status; | |
b1d67693 GH |
239 | } |
240 | ||
e0620001 HG |
241 | /* |
242 | * scsi-tags go from 0 - (nr_tags - 1), uas tags need to match stream-ids, | |
243 | * which go from 1 - nr_streams. And we use 1 for untagged commands. | |
244 | */ | |
245 | static int uas_get_tag(struct scsi_cmnd *cmnd) | |
246 | { | |
247 | int tag; | |
248 | ||
249 | if (blk_rq_tagged(cmnd->request)) | |
250 | tag = cmnd->request->tag + 2; | |
251 | else | |
252 | tag = 1; | |
253 | ||
254 | return tag; | |
255 | } | |
256 | ||
b1d67693 GH |
257 | static void uas_log_cmd_state(struct scsi_cmnd *cmnd, const char *caller) |
258 | { | |
259 | struct uas_cmd_info *ci = (void *)&cmnd->SCp; | |
260 | ||
60d9f67d HG |
261 | scmd_printk(KERN_INFO, cmnd, |
262 | "%s %p tag %d, inflight:%s%s%s%s%s%s%s%s%s%s%s%s%s\n", | |
e0620001 | 263 | caller, cmnd, uas_get_tag(cmnd), |
b1d67693 GH |
264 | (ci->state & SUBMIT_STATUS_URB) ? " s-st" : "", |
265 | (ci->state & ALLOC_DATA_IN_URB) ? " a-in" : "", | |
266 | (ci->state & SUBMIT_DATA_IN_URB) ? " s-in" : "", | |
267 | (ci->state & ALLOC_DATA_OUT_URB) ? " a-out" : "", | |
268 | (ci->state & SUBMIT_DATA_OUT_URB) ? " s-out" : "", | |
269 | (ci->state & ALLOC_CMD_URB) ? " a-cmd" : "", | |
270 | (ci->state & SUBMIT_CMD_URB) ? " s-cmd" : "", | |
271 | (ci->state & COMMAND_INFLIGHT) ? " CMD" : "", | |
272 | (ci->state & DATA_IN_URB_INFLIGHT) ? " IN" : "", | |
273 | (ci->state & DATA_OUT_URB_INFLIGHT) ? " OUT" : "", | |
ef018cc9 | 274 | (ci->state & COMMAND_COMPLETED) ? " done" : "", |
b06e48af | 275 | (ci->state & COMMAND_ABORTED) ? " abort" : "", |
efefecf3 | 276 | (ci->state & IS_IN_WORK_LIST) ? " work" : ""); |
b1d67693 GH |
277 | } |
278 | ||
279 | static int uas_try_complete(struct scsi_cmnd *cmnd, const char *caller) | |
280 | { | |
281 | struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; | |
e0648520 | 282 | struct uas_dev_info *devinfo = (void *)cmnd->device->hostdata; |
b1d67693 | 283 | |
ab945eff | 284 | lockdep_assert_held(&devinfo->lock); |
b1d67693 GH |
285 | if (cmdinfo->state & (COMMAND_INFLIGHT | |
286 | DATA_IN_URB_INFLIGHT | | |
60d9f67d | 287 | DATA_OUT_URB_INFLIGHT)) |
b1d67693 | 288 | return -EBUSY; |
f491ecbb | 289 | WARN_ON_ONCE(cmdinfo->state & COMMAND_COMPLETED); |
b1d67693 | 290 | cmdinfo->state |= COMMAND_COMPLETED; |
673331c8 | 291 | if (cmdinfo->state & COMMAND_ABORTED) |
0871d7d8 | 292 | scmd_printk(KERN_INFO, cmnd, "abort completed\n"); |
040d1a8f | 293 | list_del(&cmdinfo->list); |
5e61aede | 294 | devinfo->cmnd[uas_get_tag(cmnd) - 1] = NULL; |
c621a81e | 295 | cmnd->scsi_done(cmnd); |
b1d67693 | 296 | return 0; |
115bb1ff MW |
297 | } |
298 | ||
299 | static void uas_xfer_data(struct urb *urb, struct scsi_cmnd *cmnd, | |
b1d67693 | 300 | unsigned direction) |
115bb1ff MW |
301 | { |
302 | struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; | |
303 | int err; | |
304 | ||
b1d67693 | 305 | cmdinfo->state |= direction | SUBMIT_STATUS_URB; |
115bb1ff MW |
306 | err = uas_submit_urbs(cmnd, cmnd->device->hostdata, GFP_ATOMIC); |
307 | if (err) { | |
1bf8198e | 308 | uas_add_work(cmdinfo); |
115bb1ff MW |
309 | } |
310 | } | |
311 | ||
312 | static void uas_stat_cmplt(struct urb *urb) | |
313 | { | |
314 | struct iu *iu = urb->transfer_buffer; | |
22188f4a | 315 | struct Scsi_Host *shost = urb->context; |
21fc05b6 | 316 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
60d9f67d HG |
317 | struct urb *data_in_urb = NULL; |
318 | struct urb *data_out_urb = NULL; | |
115bb1ff | 319 | struct scsi_cmnd *cmnd; |
b1d67693 | 320 | struct uas_cmd_info *cmdinfo; |
e0648520 | 321 | unsigned long flags; |
5e61aede | 322 | unsigned int idx; |
115bb1ff | 323 | |
b7b5d11f HG |
324 | spin_lock_irqsave(&devinfo->lock, flags); |
325 | ||
326 | if (devinfo->resetting) | |
327 | goto out; | |
328 | ||
115bb1ff | 329 | if (urb->status) { |
326349f8 GH |
330 | if (urb->status == -ENOENT) { |
331 | dev_err(&urb->dev->dev, "stat urb: killed, stream %d\n", | |
332 | urb->stream_id); | |
333 | } else { | |
334 | dev_err(&urb->dev->dev, "stat urb: status %d\n", | |
335 | urb->status); | |
336 | } | |
b7b5d11f | 337 | goto out; |
023b515e GH |
338 | } |
339 | ||
5e61aede HG |
340 | idx = be16_to_cpup(&iu->tag) - 1; |
341 | if (idx >= MAX_CMNDS || !devinfo->cmnd[idx]) { | |
342 | dev_err(&urb->dev->dev, | |
343 | "stat urb: no pending cmd for tag %d\n", idx + 1); | |
b7b5d11f | 344 | goto out; |
5e61aede | 345 | } |
115bb1ff | 346 | |
5e61aede | 347 | cmnd = devinfo->cmnd[idx]; |
e0423dee | 348 | cmdinfo = (void *)&cmnd->SCp; |
d89da03a HG |
349 | |
350 | if (!(cmdinfo->state & COMMAND_INFLIGHT)) { | |
351 | scmd_printk(KERN_ERR, cmnd, "unexpected status cmplt\n"); | |
352 | goto out; | |
353 | } | |
354 | ||
115bb1ff MW |
355 | switch (iu->iu_id) { |
356 | case IU_ID_STATUS: | |
357 | if (urb->actual_length < 16) | |
358 | devinfo->uas_sense_old = 1; | |
359 | if (devinfo->uas_sense_old) | |
360 | uas_sense_old(urb, cmnd); | |
361 | else | |
362 | uas_sense(urb, cmnd); | |
8aac863e GH |
363 | if (cmnd->result != 0) { |
364 | /* cancel data transfers on error */ | |
60d9f67d HG |
365 | data_in_urb = usb_get_urb(cmdinfo->data_in_urb); |
366 | data_out_urb = usb_get_urb(cmdinfo->data_out_urb); | |
8aac863e | 367 | } |
b1d67693 GH |
368 | cmdinfo->state &= ~COMMAND_INFLIGHT; |
369 | uas_try_complete(cmnd, __func__); | |
115bb1ff MW |
370 | break; |
371 | case IU_ID_READ_READY: | |
8e453155 HG |
372 | if (!cmdinfo->data_in_urb || |
373 | (cmdinfo->state & DATA_IN_URB_INFLIGHT)) { | |
374 | scmd_printk(KERN_ERR, cmnd, "unexpected read rdy\n"); | |
375 | break; | |
376 | } | |
115bb1ff MW |
377 | uas_xfer_data(urb, cmnd, SUBMIT_DATA_IN_URB); |
378 | break; | |
379 | case IU_ID_WRITE_READY: | |
8e453155 HG |
380 | if (!cmdinfo->data_out_urb || |
381 | (cmdinfo->state & DATA_OUT_URB_INFLIGHT)) { | |
382 | scmd_printk(KERN_ERR, cmnd, "unexpected write rdy\n"); | |
383 | break; | |
384 | } | |
115bb1ff MW |
385 | uas_xfer_data(urb, cmnd, SUBMIT_DATA_OUT_URB); |
386 | break; | |
387 | default: | |
388 | scmd_printk(KERN_ERR, cmnd, | |
389 | "Bogus IU (%d) received on status pipe\n", iu->iu_id); | |
390 | } | |
b7b5d11f | 391 | out: |
e9bd7e1a | 392 | usb_free_urb(urb); |
e0648520 | 393 | spin_unlock_irqrestore(&devinfo->lock, flags); |
60d9f67d HG |
394 | |
395 | /* Unlinking of data urbs must be done without holding the lock */ | |
396 | if (data_in_urb) { | |
397 | usb_unlink_urb(data_in_urb); | |
398 | usb_put_urb(data_in_urb); | |
399 | } | |
400 | if (data_out_urb) { | |
401 | usb_unlink_urb(data_out_urb); | |
402 | usb_put_urb(data_out_urb); | |
403 | } | |
115bb1ff MW |
404 | } |
405 | ||
c621a81e | 406 | static void uas_data_cmplt(struct urb *urb) |
115bb1ff | 407 | { |
b1d67693 GH |
408 | struct scsi_cmnd *cmnd = urb->context; |
409 | struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; | |
e0648520 | 410 | struct uas_dev_info *devinfo = (void *)cmnd->device->hostdata; |
b1d67693 | 411 | struct scsi_data_buffer *sdb = NULL; |
e0648520 | 412 | unsigned long flags; |
b1d67693 | 413 | |
e0648520 | 414 | spin_lock_irqsave(&devinfo->lock, flags); |
b7b5d11f | 415 | |
b1d67693 GH |
416 | if (cmdinfo->data_in_urb == urb) { |
417 | sdb = scsi_in(cmnd); | |
418 | cmdinfo->state &= ~DATA_IN_URB_INFLIGHT; | |
85fea825 | 419 | cmdinfo->data_in_urb = NULL; |
b1d67693 GH |
420 | } else if (cmdinfo->data_out_urb == urb) { |
421 | sdb = scsi_out(cmnd); | |
422 | cmdinfo->state &= ~DATA_OUT_URB_INFLIGHT; | |
85fea825 | 423 | cmdinfo->data_out_urb = NULL; |
b1d67693 | 424 | } |
f491ecbb GH |
425 | if (sdb == NULL) { |
426 | WARN_ON_ONCE(1); | |
b7b5d11f HG |
427 | goto out; |
428 | } | |
429 | ||
430 | if (devinfo->resetting) | |
431 | goto out; | |
432 | ||
d89da03a HG |
433 | /* Data urbs should not complete before the cmd urb is submitted */ |
434 | if (cmdinfo->state & SUBMIT_CMD_URB) { | |
435 | scmd_printk(KERN_ERR, cmnd, "unexpected data cmplt\n"); | |
436 | goto out; | |
437 | } | |
438 | ||
b7b5d11f | 439 | if (urb->status) { |
876285cc HG |
440 | if (urb->status != -ECONNRESET) { |
441 | uas_log_cmd_state(cmnd, __func__); | |
442 | scmd_printk(KERN_ERR, cmnd, | |
443 | "data cmplt err %d stream %d\n", | |
444 | urb->status, urb->stream_id); | |
445 | } | |
8aac863e GH |
446 | /* error: no data transfered */ |
447 | sdb->resid = sdb->length; | |
448 | } else { | |
449 | sdb->resid = sdb->length - urb->actual_length; | |
450 | } | |
b1d67693 | 451 | uas_try_complete(cmnd, __func__); |
b7b5d11f | 452 | out: |
85fea825 | 453 | usb_free_urb(urb); |
e0648520 | 454 | spin_unlock_irqrestore(&devinfo->lock, flags); |
115bb1ff MW |
455 | } |
456 | ||
876285cc HG |
457 | static void uas_cmd_cmplt(struct urb *urb) |
458 | { | |
459 | struct scsi_cmnd *cmnd = urb->context; | |
460 | ||
461 | if (urb->status) { | |
462 | uas_log_cmd_state(cmnd, __func__); | |
463 | scmd_printk(KERN_ERR, cmnd, "cmd cmplt err %d\n", urb->status); | |
464 | } | |
465 | usb_free_urb(urb); | |
466 | } | |
467 | ||
115bb1ff | 468 | static struct urb *uas_alloc_data_urb(struct uas_dev_info *devinfo, gfp_t gfp, |
b1d67693 GH |
469 | unsigned int pipe, u16 stream_id, |
470 | struct scsi_cmnd *cmnd, | |
471 | enum dma_data_direction dir) | |
115bb1ff MW |
472 | { |
473 | struct usb_device *udev = devinfo->udev; | |
474 | struct urb *urb = usb_alloc_urb(0, gfp); | |
b1d67693 GH |
475 | struct scsi_data_buffer *sdb = (dir == DMA_FROM_DEVICE) |
476 | ? scsi_in(cmnd) : scsi_out(cmnd); | |
115bb1ff MW |
477 | |
478 | if (!urb) | |
479 | goto out; | |
b1d67693 GH |
480 | usb_fill_bulk_urb(urb, udev, pipe, NULL, sdb->length, |
481 | uas_data_cmplt, cmnd); | |
c6d4579d | 482 | urb->stream_id = stream_id; |
115bb1ff MW |
483 | urb->num_sgs = udev->bus->sg_tablesize ? sdb->table.nents : 0; |
484 | urb->sg = sdb->table.sgl; | |
485 | out: | |
486 | return urb; | |
487 | } | |
488 | ||
489 | static struct urb *uas_alloc_sense_urb(struct uas_dev_info *devinfo, gfp_t gfp, | |
e9bd7e1a | 490 | struct Scsi_Host *shost, u16 stream_id) |
115bb1ff MW |
491 | { |
492 | struct usb_device *udev = devinfo->udev; | |
493 | struct urb *urb = usb_alloc_urb(0, gfp); | |
494 | struct sense_iu *iu; | |
495 | ||
496 | if (!urb) | |
497 | goto out; | |
498 | ||
ac563cfd | 499 | iu = kzalloc(sizeof(*iu), gfp); |
115bb1ff MW |
500 | if (!iu) |
501 | goto free; | |
502 | ||
503 | usb_fill_bulk_urb(urb, udev, devinfo->status_pipe, iu, sizeof(*iu), | |
e9bd7e1a | 504 | uas_stat_cmplt, shost); |
115bb1ff MW |
505 | urb->stream_id = stream_id; |
506 | urb->transfer_flags |= URB_FREE_BUFFER; | |
507 | out: | |
508 | return urb; | |
509 | free: | |
510 | usb_free_urb(urb); | |
511 | return NULL; | |
512 | } | |
513 | ||
514 | static struct urb *uas_alloc_cmd_urb(struct uas_dev_info *devinfo, gfp_t gfp, | |
a887cd36 | 515 | struct scsi_cmnd *cmnd) |
115bb1ff MW |
516 | { |
517 | struct usb_device *udev = devinfo->udev; | |
518 | struct scsi_device *sdev = cmnd->device; | |
519 | struct urb *urb = usb_alloc_urb(0, gfp); | |
520 | struct command_iu *iu; | |
521 | int len; | |
522 | ||
523 | if (!urb) | |
524 | goto out; | |
525 | ||
526 | len = cmnd->cmd_len - 16; | |
527 | if (len < 0) | |
528 | len = 0; | |
529 | len = ALIGN(len, 4); | |
ac563cfd | 530 | iu = kzalloc(sizeof(*iu) + len, gfp); |
115bb1ff MW |
531 | if (!iu) |
532 | goto free; | |
533 | ||
534 | iu->iu_id = IU_ID_COMMAND; | |
e0620001 | 535 | iu->tag = cpu_to_be16(uas_get_tag(cmnd)); |
02e031cb | 536 | iu->prio_attr = UAS_SIMPLE_TAG; |
115bb1ff MW |
537 | iu->len = len; |
538 | int_to_scsilun(sdev->lun, &iu->lun); | |
539 | memcpy(iu->cdb, cmnd->cmnd, cmnd->cmd_len); | |
540 | ||
541 | usb_fill_bulk_urb(urb, udev, devinfo->cmd_pipe, iu, sizeof(*iu) + len, | |
876285cc | 542 | uas_cmd_cmplt, cmnd); |
115bb1ff MW |
543 | urb->transfer_flags |= URB_FREE_BUFFER; |
544 | out: | |
545 | return urb; | |
546 | free: | |
547 | usb_free_urb(urb); | |
548 | return NULL; | |
549 | } | |
550 | ||
551 | /* | |
552 | * Why should I request the Status IU before sending the Command IU? Spec | |
553 | * says to, but also says the device may receive them in any order. Seems | |
554 | * daft to me. | |
555 | */ | |
556 | ||
876285cc | 557 | static struct urb *uas_submit_sense_urb(struct scsi_cmnd *cmnd, |
70cf0fba | 558 | gfp_t gfp, unsigned int stream) |
115bb1ff | 559 | { |
876285cc | 560 | struct Scsi_Host *shost = cmnd->device->host; |
21fc05b6 | 561 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
e9bd7e1a | 562 | struct urb *urb; |
876285cc | 563 | int err; |
115bb1ff | 564 | |
e9bd7e1a GH |
565 | urb = uas_alloc_sense_urb(devinfo, gfp, shost, stream); |
566 | if (!urb) | |
70cf0fba | 567 | return NULL; |
d5f808d3 | 568 | usb_anchor_urb(urb, &devinfo->sense_urbs); |
876285cc HG |
569 | err = usb_submit_urb(urb, gfp); |
570 | if (err) { | |
d5f808d3 | 571 | usb_unanchor_urb(urb); |
876285cc | 572 | uas_log_cmd_state(cmnd, __func__); |
e9bd7e1a | 573 | shost_printk(KERN_INFO, shost, |
876285cc HG |
574 | "sense urb submission error %d stream %d\n", |
575 | err, stream); | |
e9bd7e1a | 576 | usb_free_urb(urb); |
70cf0fba | 577 | return NULL; |
115bb1ff | 578 | } |
70cf0fba | 579 | return urb; |
e9bd7e1a GH |
580 | } |
581 | ||
582 | static int uas_submit_urbs(struct scsi_cmnd *cmnd, | |
583 | struct uas_dev_info *devinfo, gfp_t gfp) | |
584 | { | |
585 | struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; | |
70cf0fba | 586 | struct urb *urb; |
876285cc | 587 | int err; |
115bb1ff | 588 | |
ab945eff | 589 | lockdep_assert_held(&devinfo->lock); |
92a3f767 | 590 | if (cmdinfo->state & SUBMIT_STATUS_URB) { |
876285cc | 591 | urb = uas_submit_sense_urb(cmnd, gfp, cmdinfo->stream); |
70cf0fba HG |
592 | if (!urb) |
593 | return SCSI_MLQUEUE_DEVICE_BUSY; | |
92a3f767 | 594 | cmdinfo->state &= ~SUBMIT_STATUS_URB; |
115bb1ff MW |
595 | } |
596 | ||
597 | if (cmdinfo->state & ALLOC_DATA_IN_URB) { | |
598 | cmdinfo->data_in_urb = uas_alloc_data_urb(devinfo, gfp, | |
c621a81e | 599 | devinfo->data_in_pipe, cmdinfo->stream, |
b1d67693 | 600 | cmnd, DMA_FROM_DEVICE); |
115bb1ff MW |
601 | if (!cmdinfo->data_in_urb) |
602 | return SCSI_MLQUEUE_DEVICE_BUSY; | |
603 | cmdinfo->state &= ~ALLOC_DATA_IN_URB; | |
604 | } | |
605 | ||
606 | if (cmdinfo->state & SUBMIT_DATA_IN_URB) { | |
d5f808d3 | 607 | usb_anchor_urb(cmdinfo->data_in_urb, &devinfo->data_urbs); |
876285cc HG |
608 | err = usb_submit_urb(cmdinfo->data_in_urb, gfp); |
609 | if (err) { | |
d5f808d3 | 610 | usb_unanchor_urb(cmdinfo->data_in_urb); |
876285cc | 611 | uas_log_cmd_state(cmnd, __func__); |
115bb1ff | 612 | scmd_printk(KERN_INFO, cmnd, |
876285cc HG |
613 | "data in urb submission error %d stream %d\n", |
614 | err, cmdinfo->data_in_urb->stream_id); | |
115bb1ff MW |
615 | return SCSI_MLQUEUE_DEVICE_BUSY; |
616 | } | |
617 | cmdinfo->state &= ~SUBMIT_DATA_IN_URB; | |
b1d67693 | 618 | cmdinfo->state |= DATA_IN_URB_INFLIGHT; |
115bb1ff MW |
619 | } |
620 | ||
621 | if (cmdinfo->state & ALLOC_DATA_OUT_URB) { | |
622 | cmdinfo->data_out_urb = uas_alloc_data_urb(devinfo, gfp, | |
c621a81e | 623 | devinfo->data_out_pipe, cmdinfo->stream, |
b1d67693 | 624 | cmnd, DMA_TO_DEVICE); |
115bb1ff MW |
625 | if (!cmdinfo->data_out_urb) |
626 | return SCSI_MLQUEUE_DEVICE_BUSY; | |
627 | cmdinfo->state &= ~ALLOC_DATA_OUT_URB; | |
628 | } | |
629 | ||
630 | if (cmdinfo->state & SUBMIT_DATA_OUT_URB) { | |
d5f808d3 | 631 | usb_anchor_urb(cmdinfo->data_out_urb, &devinfo->data_urbs); |
876285cc HG |
632 | err = usb_submit_urb(cmdinfo->data_out_urb, gfp); |
633 | if (err) { | |
d5f808d3 | 634 | usb_unanchor_urb(cmdinfo->data_out_urb); |
876285cc | 635 | uas_log_cmd_state(cmnd, __func__); |
115bb1ff | 636 | scmd_printk(KERN_INFO, cmnd, |
876285cc HG |
637 | "data out urb submission error %d stream %d\n", |
638 | err, cmdinfo->data_out_urb->stream_id); | |
115bb1ff MW |
639 | return SCSI_MLQUEUE_DEVICE_BUSY; |
640 | } | |
641 | cmdinfo->state &= ~SUBMIT_DATA_OUT_URB; | |
b1d67693 | 642 | cmdinfo->state |= DATA_OUT_URB_INFLIGHT; |
115bb1ff MW |
643 | } |
644 | ||
645 | if (cmdinfo->state & ALLOC_CMD_URB) { | |
a887cd36 | 646 | cmdinfo->cmd_urb = uas_alloc_cmd_urb(devinfo, gfp, cmnd); |
115bb1ff MW |
647 | if (!cmdinfo->cmd_urb) |
648 | return SCSI_MLQUEUE_DEVICE_BUSY; | |
649 | cmdinfo->state &= ~ALLOC_CMD_URB; | |
650 | } | |
651 | ||
652 | if (cmdinfo->state & SUBMIT_CMD_URB) { | |
d5f808d3 | 653 | usb_anchor_urb(cmdinfo->cmd_urb, &devinfo->cmd_urbs); |
876285cc HG |
654 | err = usb_submit_urb(cmdinfo->cmd_urb, gfp); |
655 | if (err) { | |
d5f808d3 | 656 | usb_unanchor_urb(cmdinfo->cmd_urb); |
876285cc | 657 | uas_log_cmd_state(cmnd, __func__); |
115bb1ff | 658 | scmd_printk(KERN_INFO, cmnd, |
876285cc | 659 | "cmd urb submission error %d\n", err); |
115bb1ff MW |
660 | return SCSI_MLQUEUE_DEVICE_BUSY; |
661 | } | |
a0e39e34 | 662 | cmdinfo->cmd_urb = NULL; |
115bb1ff | 663 | cmdinfo->state &= ~SUBMIT_CMD_URB; |
b1d67693 | 664 | cmdinfo->state |= COMMAND_INFLIGHT; |
115bb1ff MW |
665 | } |
666 | ||
667 | return 0; | |
668 | } | |
669 | ||
f281233d | 670 | static int uas_queuecommand_lck(struct scsi_cmnd *cmnd, |
115bb1ff MW |
671 | void (*done)(struct scsi_cmnd *)) |
672 | { | |
673 | struct scsi_device *sdev = cmnd->device; | |
674 | struct uas_dev_info *devinfo = sdev->hostdata; | |
675 | struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; | |
e0648520 | 676 | unsigned long flags; |
5e61aede | 677 | unsigned int stream; |
115bb1ff MW |
678 | int err; |
679 | ||
680 | BUILD_BUG_ON(sizeof(struct uas_cmd_info) > sizeof(struct scsi_pointer)); | |
681 | ||
59307852 HG |
682 | if ((devinfo->flags & US_FL_NO_ATA_1X) && |
683 | (cmnd->cmnd[0] == ATA_12 || cmnd->cmnd[0] == ATA_16)) { | |
684 | memcpy(cmnd->sense_buffer, usb_stor_sense_invalidCDB, | |
685 | sizeof(usb_stor_sense_invalidCDB)); | |
686 | cmnd->result = SAM_STAT_CHECK_CONDITION; | |
687 | cmnd->scsi_done(cmnd); | |
688 | return 0; | |
689 | } | |
690 | ||
c6f63207 HG |
691 | spin_lock_irqsave(&devinfo->lock, flags); |
692 | ||
f8be6bfc GH |
693 | if (devinfo->resetting) { |
694 | cmnd->result = DID_ERROR << 16; | |
695 | cmnd->scsi_done(cmnd); | |
c6f63207 | 696 | spin_unlock_irqrestore(&devinfo->lock, flags); |
f8be6bfc GH |
697 | return 0; |
698 | } | |
699 | ||
5e61aede HG |
700 | stream = uas_get_tag(cmnd); |
701 | if (devinfo->cmnd[stream - 1]) { | |
e0648520 | 702 | spin_unlock_irqrestore(&devinfo->lock, flags); |
115bb1ff | 703 | return SCSI_MLQUEUE_DEVICE_BUSY; |
e0648520 | 704 | } |
115bb1ff | 705 | |
115bb1ff MW |
706 | cmnd->scsi_done = done; |
707 | ||
5e61aede HG |
708 | memset(cmdinfo, 0, sizeof(*cmdinfo)); |
709 | cmdinfo->stream = stream; | |
e0620001 | 710 | cmdinfo->state = SUBMIT_STATUS_URB | ALLOC_CMD_URB | SUBMIT_CMD_URB; |
115bb1ff MW |
711 | |
712 | switch (cmnd->sc_data_direction) { | |
713 | case DMA_FROM_DEVICE: | |
714 | cmdinfo->state |= ALLOC_DATA_IN_URB | SUBMIT_DATA_IN_URB; | |
715 | break; | |
716 | case DMA_BIDIRECTIONAL: | |
717 | cmdinfo->state |= ALLOC_DATA_IN_URB | SUBMIT_DATA_IN_URB; | |
718 | case DMA_TO_DEVICE: | |
719 | cmdinfo->state |= ALLOC_DATA_OUT_URB | SUBMIT_DATA_OUT_URB; | |
720 | case DMA_NONE: | |
721 | break; | |
722 | } | |
723 | ||
724 | if (!devinfo->use_streams) { | |
db32de11 | 725 | cmdinfo->state &= ~(SUBMIT_DATA_IN_URB | SUBMIT_DATA_OUT_URB); |
115bb1ff MW |
726 | cmdinfo->stream = 0; |
727 | } | |
728 | ||
729 | err = uas_submit_urbs(cmnd, devinfo, GFP_ATOMIC); | |
730 | if (err) { | |
731 | /* If we did nothing, give up now */ | |
92a3f767 | 732 | if (cmdinfo->state & SUBMIT_STATUS_URB) { |
e0648520 | 733 | spin_unlock_irqrestore(&devinfo->lock, flags); |
115bb1ff MW |
734 | return SCSI_MLQUEUE_DEVICE_BUSY; |
735 | } | |
1bf8198e | 736 | uas_add_work(cmdinfo); |
115bb1ff MW |
737 | } |
738 | ||
5e61aede | 739 | devinfo->cmnd[stream - 1] = cmnd; |
040d1a8f | 740 | list_add_tail(&cmdinfo->list, &devinfo->inflight_list); |
e0648520 | 741 | spin_unlock_irqrestore(&devinfo->lock, flags); |
115bb1ff MW |
742 | return 0; |
743 | } | |
744 | ||
f281233d JG |
745 | static DEF_SCSI_QCMD(uas_queuecommand) |
746 | ||
115bb1ff MW |
747 | static int uas_eh_bus_reset_handler(struct scsi_cmnd *cmnd) |
748 | { | |
749 | struct scsi_device *sdev = cmnd->device; | |
750 | struct uas_dev_info *devinfo = sdev->hostdata; | |
751 | struct usb_device *udev = devinfo->udev; | |
b7b5d11f | 752 | unsigned long flags; |
023b515e | 753 | int err; |
115bb1ff | 754 | |
be326f4c HG |
755 | err = usb_lock_device_for_reset(udev, devinfo->intf); |
756 | if (err) { | |
757 | shost_printk(KERN_ERR, sdev->host, | |
758 | "%s FAILED to get lock err %d\n", __func__, err); | |
759 | return FAILED; | |
760 | } | |
761 | ||
326349f8 | 762 | shost_printk(KERN_INFO, sdev->host, "%s start\n", __func__); |
b7b5d11f HG |
763 | |
764 | spin_lock_irqsave(&devinfo->lock, flags); | |
023b515e | 765 | devinfo->resetting = 1; |
b7b5d11f HG |
766 | spin_unlock_irqrestore(&devinfo->lock, flags); |
767 | ||
673331c8 | 768 | uas_abort_inflight(devinfo, DID_RESET, __func__); |
a0e39e34 | 769 | usb_kill_anchored_urbs(&devinfo->cmd_urbs); |
023b515e GH |
770 | usb_kill_anchored_urbs(&devinfo->sense_urbs); |
771 | usb_kill_anchored_urbs(&devinfo->data_urbs); | |
326349f8 | 772 | uas_zap_dead(devinfo); |
023b515e | 773 | err = usb_reset_device(udev); |
b7b5d11f HG |
774 | |
775 | spin_lock_irqsave(&devinfo->lock, flags); | |
023b515e | 776 | devinfo->resetting = 0; |
b7b5d11f | 777 | spin_unlock_irqrestore(&devinfo->lock, flags); |
115bb1ff | 778 | |
be326f4c HG |
779 | usb_unlock_device(udev); |
780 | ||
023b515e GH |
781 | if (err) { |
782 | shost_printk(KERN_INFO, sdev->host, "%s FAILED\n", __func__); | |
783 | return FAILED; | |
784 | } | |
115bb1ff | 785 | |
023b515e GH |
786 | shost_printk(KERN_INFO, sdev->host, "%s success\n", __func__); |
787 | return SUCCESS; | |
115bb1ff MW |
788 | } |
789 | ||
790 | static int uas_slave_alloc(struct scsi_device *sdev) | |
791 | { | |
21fc05b6 | 792 | sdev->hostdata = (void *)sdev->host->hostdata; |
37599f96 HG |
793 | |
794 | /* USB has unusual DMA-alignment requirements: Although the | |
795 | * starting address of each scatter-gather element doesn't matter, | |
796 | * the length of each element except the last must be divisible | |
797 | * by the Bulk maxpacket value. There's currently no way to | |
798 | * express this by block-layer constraints, so we'll cop out | |
799 | * and simply require addresses to be aligned at 512-byte | |
800 | * boundaries. This is okay since most block I/O involves | |
801 | * hardware sectors that are multiples of 512 bytes in length, | |
802 | * and since host controllers up through USB 2.0 have maxpacket | |
803 | * values no larger than 512. | |
804 | * | |
805 | * But it doesn't suffice for Wireless USB, where Bulk maxpacket | |
806 | * values can be as large as 2048. To make that work properly | |
807 | * will require changes to the block layer. | |
808 | */ | |
809 | blk_queue_update_dma_alignment(sdev->request_queue, (512 - 1)); | |
810 | ||
115bb1ff MW |
811 | return 0; |
812 | } | |
813 | ||
814 | static int uas_slave_configure(struct scsi_device *sdev) | |
815 | { | |
816 | struct uas_dev_info *devinfo = sdev->hostdata; | |
734016b0 HG |
817 | |
818 | if (devinfo->flags & US_FL_NO_REPORT_OPCODES) | |
819 | sdev->no_report_opcodes = 1; | |
820 | ||
115bb1ff | 821 | scsi_set_tag_type(sdev, MSG_ORDERED_TAG); |
d3f7c156 | 822 | scsi_activate_tcq(sdev, devinfo->qdepth - 2); |
115bb1ff MW |
823 | return 0; |
824 | } | |
825 | ||
826 | static struct scsi_host_template uas_host_template = { | |
827 | .module = THIS_MODULE, | |
828 | .name = "uas", | |
829 | .queuecommand = uas_queuecommand, | |
830 | .slave_alloc = uas_slave_alloc, | |
831 | .slave_configure = uas_slave_configure, | |
115bb1ff MW |
832 | .eh_bus_reset_handler = uas_eh_bus_reset_handler, |
833 | .can_queue = 65536, /* Is there a limit on the _host_ ? */ | |
834 | .this_id = -1, | |
835 | .sg_tablesize = SG_NONE, | |
836 | .cmd_per_lun = 1, /* until we override it */ | |
837 | .skip_settle_delay = 1, | |
838 | .ordered_tag = 1, | |
839 | }; | |
840 | ||
79b4c061 HG |
841 | #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \ |
842 | vendorName, productName, useProtocol, useTransport, \ | |
843 | initFunction, flags) \ | |
844 | { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ | |
845 | .driver_info = (flags) } | |
846 | ||
115bb1ff | 847 | static struct usb_device_id uas_usb_ids[] = { |
79b4c061 | 848 | # include "unusual_uas.h" |
115bb1ff MW |
849 | { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, USB_SC_SCSI, USB_PR_BULK) }, |
850 | { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, USB_SC_SCSI, USB_PR_UAS) }, | |
851 | /* 0xaa is a prototype device I happen to have access to */ | |
852 | { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, USB_SC_SCSI, 0xaa) }, | |
853 | { } | |
854 | }; | |
855 | MODULE_DEVICE_TABLE(usb, uas_usb_ids); | |
856 | ||
79b4c061 HG |
857 | #undef UNUSUAL_DEV |
858 | ||
e1be067b HG |
859 | static int uas_switch_interface(struct usb_device *udev, |
860 | struct usb_interface *intf) | |
861 | { | |
862 | int alt; | |
863 | ||
864 | alt = uas_find_uas_alt_setting(intf); | |
865 | if (alt < 0) | |
866 | return alt; | |
867 | ||
868 | return usb_set_interface(udev, | |
869 | intf->altsetting[0].desc.bInterfaceNumber, alt); | |
870 | } | |
871 | ||
58d51444 | 872 | static int uas_configure_endpoints(struct uas_dev_info *devinfo) |
34f11e59 HG |
873 | { |
874 | struct usb_host_endpoint *eps[4] = { }; | |
875 | struct usb_device *udev = devinfo->udev; | |
876 | int r; | |
877 | ||
878 | devinfo->uas_sense_old = 0; | |
34f11e59 HG |
879 | |
880 | r = uas_find_endpoints(devinfo->intf->cur_altsetting, eps); | |
74d71aec HG |
881 | if (r) |
882 | return r; | |
883 | ||
884 | devinfo->cmd_pipe = usb_sndbulkpipe(udev, | |
885 | usb_endpoint_num(&eps[0]->desc)); | |
886 | devinfo->status_pipe = usb_rcvbulkpipe(udev, | |
887 | usb_endpoint_num(&eps[1]->desc)); | |
888 | devinfo->data_in_pipe = usb_rcvbulkpipe(udev, | |
889 | usb_endpoint_num(&eps[2]->desc)); | |
890 | devinfo->data_out_pipe = usb_sndbulkpipe(udev, | |
891 | usb_endpoint_num(&eps[3]->desc)); | |
115bb1ff | 892 | |
58d51444 | 893 | if (udev->speed != USB_SPEED_SUPER) { |
e2875c33 | 894 | devinfo->qdepth = 32; |
115bb1ff MW |
895 | devinfo->use_streams = 0; |
896 | } else { | |
58d51444 | 897 | devinfo->qdepth = usb_alloc_streams(devinfo->intf, eps + 1, |
5e61aede | 898 | 3, MAX_CMNDS, GFP_NOIO); |
58d51444 HG |
899 | if (devinfo->qdepth < 0) |
900 | return devinfo->qdepth; | |
115bb1ff MW |
901 | devinfo->use_streams = 1; |
902 | } | |
58d51444 HG |
903 | |
904 | return 0; | |
115bb1ff MW |
905 | } |
906 | ||
dae51546 SAS |
907 | static void uas_free_streams(struct uas_dev_info *devinfo) |
908 | { | |
909 | struct usb_device *udev = devinfo->udev; | |
910 | struct usb_host_endpoint *eps[3]; | |
911 | ||
912 | eps[0] = usb_pipe_endpoint(udev, devinfo->status_pipe); | |
913 | eps[1] = usb_pipe_endpoint(udev, devinfo->data_in_pipe); | |
914 | eps[2] = usb_pipe_endpoint(udev, devinfo->data_out_pipe); | |
94d72f00 | 915 | usb_free_streams(devinfo->intf, eps, 3, GFP_NOIO); |
dae51546 SAS |
916 | } |
917 | ||
115bb1ff MW |
918 | static int uas_probe(struct usb_interface *intf, const struct usb_device_id *id) |
919 | { | |
6ce8213b HG |
920 | int result = -ENOMEM; |
921 | struct Scsi_Host *shost = NULL; | |
115bb1ff MW |
922 | struct uas_dev_info *devinfo; |
923 | struct usb_device *udev = interface_to_usbdev(intf); | |
924 | ||
79b4c061 HG |
925 | if (!uas_use_uas_driver(intf, id)) |
926 | return -ENODEV; | |
927 | ||
89dc2905 MW |
928 | if (uas_switch_interface(udev, intf)) |
929 | return -ENODEV; | |
115bb1ff | 930 | |
21fc05b6 HG |
931 | shost = scsi_host_alloc(&uas_host_template, |
932 | sizeof(struct uas_dev_info)); | |
115bb1ff | 933 | if (!shost) |
6ce8213b | 934 | goto set_alt0; |
115bb1ff MW |
935 | |
936 | shost->max_cmd_len = 16 + 252; | |
937 | shost->max_id = 1; | |
bde027b4 GH |
938 | shost->max_lun = 256; |
939 | shost->max_channel = 0; | |
115bb1ff MW |
940 | shost->sg_tablesize = udev->bus->sg_tablesize; |
941 | ||
21fc05b6 | 942 | devinfo = (struct uas_dev_info *)shost->hostdata; |
115bb1ff MW |
943 | devinfo->intf = intf; |
944 | devinfo->udev = udev; | |
023b515e | 945 | devinfo->resetting = 0; |
da65c2bb | 946 | devinfo->shutdown = 0; |
59307852 HG |
947 | devinfo->flags = id->driver_info; |
948 | usb_stor_adjust_quirks(udev, &devinfo->flags); | |
a0e39e34 | 949 | init_usb_anchor(&devinfo->cmd_urbs); |
bdd000fb GH |
950 | init_usb_anchor(&devinfo->sense_urbs); |
951 | init_usb_anchor(&devinfo->data_urbs); | |
e0648520 | 952 | spin_lock_init(&devinfo->lock); |
1bf8198e | 953 | INIT_WORK(&devinfo->work, uas_do_work); |
61c09ce5 | 954 | INIT_LIST_HEAD(&devinfo->inflight_list); |
326349f8 | 955 | INIT_LIST_HEAD(&devinfo->dead_list); |
58d51444 HG |
956 | |
957 | result = uas_configure_endpoints(devinfo); | |
958 | if (result) | |
959 | goto set_alt0; | |
115bb1ff | 960 | |
d3f7c156 | 961 | result = scsi_init_shared_tag_map(shost, devinfo->qdepth - 2); |
115bb1ff | 962 | if (result) |
6ce8213b | 963 | goto free_streams; |
dae51546 | 964 | |
c637f1fa | 965 | usb_set_intfdata(intf, shost); |
dae51546 SAS |
966 | result = scsi_add_host(shost, &intf->dev); |
967 | if (result) | |
6ce8213b | 968 | goto free_streams; |
dae51546 | 969 | |
115bb1ff | 970 | scsi_scan_host(shost); |
115bb1ff | 971 | return result; |
dae51546 | 972 | |
6ce8213b | 973 | free_streams: |
dae51546 | 974 | uas_free_streams(devinfo); |
c637f1fa | 975 | usb_set_intfdata(intf, NULL); |
6ce8213b HG |
976 | set_alt0: |
977 | usb_set_interface(udev, intf->altsetting[0].desc.bInterfaceNumber, 0); | |
115bb1ff MW |
978 | if (shost) |
979 | scsi_host_put(shost); | |
980 | return result; | |
981 | } | |
982 | ||
983 | static int uas_pre_reset(struct usb_interface *intf) | |
984 | { | |
4de7a373 | 985 | struct Scsi_Host *shost = usb_get_intfdata(intf); |
21fc05b6 | 986 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
4de7a373 HG |
987 | unsigned long flags; |
988 | ||
da65c2bb HG |
989 | if (devinfo->shutdown) |
990 | return 0; | |
991 | ||
4de7a373 HG |
992 | /* Block new requests */ |
993 | spin_lock_irqsave(shost->host_lock, flags); | |
994 | scsi_block_requests(shost); | |
995 | spin_unlock_irqrestore(shost->host_lock, flags); | |
996 | ||
997 | /* Wait for any pending requests to complete */ | |
998 | flush_work(&devinfo->work); | |
999 | if (usb_wait_anchor_empty_timeout(&devinfo->sense_urbs, 5000) == 0) { | |
1000 | shost_printk(KERN_ERR, shost, "%s: timed out\n", __func__); | |
1001 | return 1; | |
1002 | } | |
1003 | ||
1004 | uas_free_streams(devinfo); | |
1005 | ||
115bb1ff MW |
1006 | return 0; |
1007 | } | |
1008 | ||
1009 | static int uas_post_reset(struct usb_interface *intf) | |
1010 | { | |
4de7a373 | 1011 | struct Scsi_Host *shost = usb_get_intfdata(intf); |
21fc05b6 | 1012 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
4de7a373 HG |
1013 | unsigned long flags; |
1014 | ||
da65c2bb HG |
1015 | if (devinfo->shutdown) |
1016 | return 0; | |
1017 | ||
58d51444 HG |
1018 | if (uas_configure_endpoints(devinfo) != 0) { |
1019 | shost_printk(KERN_ERR, shost, | |
1020 | "%s: alloc streams error after reset", __func__); | |
1021 | return 1; | |
1022 | } | |
4de7a373 HG |
1023 | |
1024 | spin_lock_irqsave(shost->host_lock, flags); | |
1025 | scsi_report_bus_reset(shost, 0); | |
1026 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1027 | ||
1028 | scsi_unblock_requests(shost); | |
1029 | ||
115bb1ff MW |
1030 | return 0; |
1031 | } | |
1032 | ||
0df1f663 HG |
1033 | static int uas_suspend(struct usb_interface *intf, pm_message_t message) |
1034 | { | |
1035 | struct Scsi_Host *shost = usb_get_intfdata(intf); | |
21fc05b6 | 1036 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
0df1f663 HG |
1037 | |
1038 | /* Wait for any pending requests to complete */ | |
1039 | flush_work(&devinfo->work); | |
1040 | if (usb_wait_anchor_empty_timeout(&devinfo->sense_urbs, 5000) == 0) { | |
1041 | shost_printk(KERN_ERR, shost, "%s: timed out\n", __func__); | |
1042 | return -ETIME; | |
1043 | } | |
1044 | ||
1045 | return 0; | |
1046 | } | |
1047 | ||
1048 | static int uas_resume(struct usb_interface *intf) | |
1049 | { | |
1050 | return 0; | |
1051 | } | |
1052 | ||
1053 | static int uas_reset_resume(struct usb_interface *intf) | |
1054 | { | |
1055 | struct Scsi_Host *shost = usb_get_intfdata(intf); | |
21fc05b6 | 1056 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
0df1f663 HG |
1057 | unsigned long flags; |
1058 | ||
1059 | if (uas_configure_endpoints(devinfo) != 0) { | |
1060 | shost_printk(KERN_ERR, shost, | |
1061 | "%s: alloc streams error after reset", __func__); | |
1062 | return -EIO; | |
1063 | } | |
1064 | ||
1065 | spin_lock_irqsave(shost->host_lock, flags); | |
1066 | scsi_report_bus_reset(shost, 0); | |
1067 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1068 | ||
1069 | return 0; | |
1070 | } | |
1071 | ||
115bb1ff MW |
1072 | static void uas_disconnect(struct usb_interface *intf) |
1073 | { | |
115bb1ff | 1074 | struct Scsi_Host *shost = usb_get_intfdata(intf); |
21fc05b6 | 1075 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
b7b5d11f | 1076 | unsigned long flags; |
115bb1ff | 1077 | |
b7b5d11f | 1078 | spin_lock_irqsave(&devinfo->lock, flags); |
4c456971 | 1079 | devinfo->resetting = 1; |
b7b5d11f HG |
1080 | spin_unlock_irqrestore(&devinfo->lock, flags); |
1081 | ||
1bf8198e | 1082 | cancel_work_sync(&devinfo->work); |
673331c8 | 1083 | uas_abort_inflight(devinfo, DID_NO_CONNECT, __func__); |
a0e39e34 | 1084 | usb_kill_anchored_urbs(&devinfo->cmd_urbs); |
bdd000fb GH |
1085 | usb_kill_anchored_urbs(&devinfo->sense_urbs); |
1086 | usb_kill_anchored_urbs(&devinfo->data_urbs); | |
326349f8 | 1087 | uas_zap_dead(devinfo); |
4c456971 | 1088 | scsi_remove_host(shost); |
dae51546 | 1089 | uas_free_streams(devinfo); |
21fc05b6 | 1090 | scsi_host_put(shost); |
115bb1ff MW |
1091 | } |
1092 | ||
da65c2bb HG |
1093 | /* |
1094 | * Put the device back in usb-storage mode on shutdown, as some BIOS-es | |
1095 | * hang on reboot when the device is still in uas mode. Note the reset is | |
1096 | * necessary as some devices won't revert to usb-storage mode without it. | |
1097 | */ | |
1098 | static void uas_shutdown(struct device *dev) | |
1099 | { | |
1100 | struct usb_interface *intf = to_usb_interface(dev); | |
1101 | struct usb_device *udev = interface_to_usbdev(intf); | |
1102 | struct Scsi_Host *shost = usb_get_intfdata(intf); | |
21fc05b6 | 1103 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
da65c2bb HG |
1104 | |
1105 | if (system_state != SYSTEM_RESTART) | |
1106 | return; | |
1107 | ||
1108 | devinfo->shutdown = 1; | |
1109 | uas_free_streams(devinfo); | |
1110 | usb_set_interface(udev, intf->altsetting[0].desc.bInterfaceNumber, 0); | |
1111 | usb_reset_device(udev); | |
1112 | } | |
1113 | ||
115bb1ff MW |
1114 | static struct usb_driver uas_driver = { |
1115 | .name = "uas", | |
1116 | .probe = uas_probe, | |
1117 | .disconnect = uas_disconnect, | |
1118 | .pre_reset = uas_pre_reset, | |
1119 | .post_reset = uas_post_reset, | |
0df1f663 HG |
1120 | .suspend = uas_suspend, |
1121 | .resume = uas_resume, | |
1122 | .reset_resume = uas_reset_resume, | |
da65c2bb | 1123 | .drvwrap.driver.shutdown = uas_shutdown, |
115bb1ff MW |
1124 | .id_table = uas_usb_ids, |
1125 | }; | |
1126 | ||
65db4305 | 1127 | module_usb_driver(uas_driver); |
115bb1ff MW |
1128 | |
1129 | MODULE_LICENSE("GPL"); | |
f50a4968 HG |
1130 | MODULE_AUTHOR( |
1131 | "Hans de Goede <hdegoede@redhat.com>, Matthew Wilcox and Sarah Sharp"); |