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 | |
115bb1ff MW |
33 | /* |
34 | * The r00-r01c specs define this version of the SENSE IU data structure. | |
35 | * It's still in use by several different firmware releases. | |
36 | */ | |
37 | struct sense_iu_old { | |
38 | __u8 iu_id; | |
39 | __u8 rsvd1; | |
40 | __be16 tag; | |
41 | __be16 len; | |
42 | __u8 status; | |
43 | __u8 service_response; | |
44 | __u8 sense[SCSI_SENSE_BUFFERSIZE]; | |
45 | }; | |
46 | ||
115bb1ff MW |
47 | struct uas_dev_info { |
48 | struct usb_interface *intf; | |
49 | struct usb_device *udev; | |
a0e39e34 | 50 | struct usb_anchor cmd_urbs; |
bdd000fb GH |
51 | struct usb_anchor sense_urbs; |
52 | struct usb_anchor data_urbs; | |
59307852 | 53 | unsigned long flags; |
023b515e | 54 | int qdepth, resetting; |
115bb1ff MW |
55 | unsigned cmd_pipe, status_pipe, data_in_pipe, data_out_pipe; |
56 | unsigned use_streams:1; | |
57 | unsigned uas_sense_old:1; | |
da65c2bb | 58 | unsigned shutdown:1; |
22188f4a | 59 | struct scsi_cmnd *cmnd; |
e0648520 | 60 | spinlock_t lock; |
1bf8198e | 61 | struct work_struct work; |
61c09ce5 | 62 | struct list_head inflight_list; |
326349f8 | 63 | struct list_head dead_list; |
115bb1ff MW |
64 | }; |
65 | ||
66 | enum { | |
92a3f767 | 67 | SUBMIT_STATUS_URB = (1 << 1), |
115bb1ff MW |
68 | ALLOC_DATA_IN_URB = (1 << 2), |
69 | SUBMIT_DATA_IN_URB = (1 << 3), | |
70 | ALLOC_DATA_OUT_URB = (1 << 4), | |
71 | SUBMIT_DATA_OUT_URB = (1 << 5), | |
72 | ALLOC_CMD_URB = (1 << 6), | |
73 | SUBMIT_CMD_URB = (1 << 7), | |
b1d67693 GH |
74 | COMMAND_INFLIGHT = (1 << 8), |
75 | DATA_IN_URB_INFLIGHT = (1 << 9), | |
76 | DATA_OUT_URB_INFLIGHT = (1 << 10), | |
77 | COMMAND_COMPLETED = (1 << 11), | |
ef018cc9 | 78 | COMMAND_ABORTED = (1 << 12), |
b06e48af | 79 | UNLINK_DATA_URBS = (1 << 13), |
efefecf3 | 80 | IS_IN_WORK_LIST = (1 << 14), |
115bb1ff MW |
81 | }; |
82 | ||
83 | /* Overrides scsi_pointer */ | |
84 | struct uas_cmd_info { | |
85 | unsigned int state; | |
86 | unsigned int stream; | |
87 | struct urb *cmd_urb; | |
115bb1ff MW |
88 | struct urb *data_in_urb; |
89 | struct urb *data_out_urb; | |
040d1a8f | 90 | struct list_head list; |
115bb1ff MW |
91 | }; |
92 | ||
93 | /* I hate forward declarations, but I actually have a loop */ | |
94 | static int uas_submit_urbs(struct scsi_cmnd *cmnd, | |
95 | struct uas_dev_info *devinfo, gfp_t gfp); | |
ea9da1c7 | 96 | static void uas_do_work(struct work_struct *work); |
4c456971 | 97 | static int uas_try_complete(struct scsi_cmnd *cmnd, const char *caller); |
d89bd835 | 98 | static void uas_free_streams(struct uas_dev_info *devinfo); |
326349f8 | 99 | static void uas_log_cmd_state(struct scsi_cmnd *cmnd, const char *caller); |
115bb1ff | 100 | |
7e50e0be | 101 | /* Must be called with devinfo->lock held, will temporary unlock the lock */ |
aa8f6123 | 102 | static void uas_unlink_data_urbs(struct uas_dev_info *devinfo, |
7e50e0be HG |
103 | struct uas_cmd_info *cmdinfo, |
104 | unsigned long *lock_flags) | |
aa8f6123 | 105 | { |
b06e48af GH |
106 | /* |
107 | * The UNLINK_DATA_URBS flag makes sure uas_try_complete | |
108 | * (called by urb completion) doesn't release cmdinfo | |
109 | * underneath us. | |
110 | */ | |
b06e48af | 111 | cmdinfo->state |= UNLINK_DATA_URBS; |
7e50e0be | 112 | spin_unlock_irqrestore(&devinfo->lock, *lock_flags); |
b06e48af | 113 | |
aa8f6123 GH |
114 | if (cmdinfo->data_in_urb) |
115 | usb_unlink_urb(cmdinfo->data_in_urb); | |
116 | if (cmdinfo->data_out_urb) | |
117 | usb_unlink_urb(cmdinfo->data_out_urb); | |
b06e48af | 118 | |
7e50e0be | 119 | spin_lock_irqsave(&devinfo->lock, *lock_flags); |
b06e48af | 120 | cmdinfo->state &= ~UNLINK_DATA_URBS; |
aa8f6123 GH |
121 | } |
122 | ||
115bb1ff MW |
123 | static void uas_do_work(struct work_struct *work) |
124 | { | |
1bf8198e GH |
125 | struct uas_dev_info *devinfo = |
126 | container_of(work, struct uas_dev_info, work); | |
115bb1ff | 127 | struct uas_cmd_info *cmdinfo; |
e0648520 | 128 | unsigned long flags; |
ea9da1c7 | 129 | int err; |
115bb1ff | 130 | |
1bf8198e | 131 | spin_lock_irqsave(&devinfo->lock, flags); |
b7b5d11f HG |
132 | |
133 | if (devinfo->resetting) | |
134 | goto out; | |
135 | ||
040d1a8f | 136 | list_for_each_entry(cmdinfo, &devinfo->inflight_list, list) { |
115bb1ff | 137 | struct scsi_pointer *scp = (void *)cmdinfo; |
1bf8198e GH |
138 | struct scsi_cmnd *cmnd = container_of(scp, struct scsi_cmnd, |
139 | SCp); | |
61c09ce5 HG |
140 | |
141 | if (!(cmdinfo->state & IS_IN_WORK_LIST)) | |
142 | continue; | |
143 | ||
e7eda932 | 144 | err = uas_submit_urbs(cmnd, cmnd->device->hostdata, GFP_ATOMIC); |
61c09ce5 | 145 | if (!err) |
efefecf3 | 146 | cmdinfo->state &= ~IS_IN_WORK_LIST; |
61c09ce5 | 147 | else |
1bf8198e | 148 | schedule_work(&devinfo->work); |
115bb1ff | 149 | } |
b7b5d11f | 150 | out: |
1bf8198e | 151 | spin_unlock_irqrestore(&devinfo->lock, flags); |
115bb1ff MW |
152 | } |
153 | ||
da3033ea | 154 | static void uas_mark_cmd_dead(struct uas_dev_info *devinfo, |
673331c8 HG |
155 | struct uas_cmd_info *cmdinfo, |
156 | int result, const char *caller) | |
da3033ea HG |
157 | { |
158 | struct scsi_pointer *scp = (void *)cmdinfo; | |
159 | struct scsi_cmnd *cmnd = container_of(scp, struct scsi_cmnd, SCp); | |
160 | ||
161 | uas_log_cmd_state(cmnd, caller); | |
ab945eff | 162 | lockdep_assert_held(&devinfo->lock); |
da3033ea HG |
163 | WARN_ON_ONCE(cmdinfo->state & COMMAND_ABORTED); |
164 | cmdinfo->state |= COMMAND_ABORTED; | |
165 | cmdinfo->state &= ~IS_IN_WORK_LIST; | |
673331c8 | 166 | cmnd->result = result << 16; |
040d1a8f | 167 | list_move_tail(&cmdinfo->list, &devinfo->dead_list); |
da3033ea HG |
168 | } |
169 | ||
673331c8 HG |
170 | static void uas_abort_inflight(struct uas_dev_info *devinfo, int result, |
171 | const char *caller) | |
4c456971 GH |
172 | { |
173 | struct uas_cmd_info *cmdinfo; | |
174 | struct uas_cmd_info *temp; | |
4c456971 GH |
175 | unsigned long flags; |
176 | ||
4c456971 | 177 | spin_lock_irqsave(&devinfo->lock, flags); |
040d1a8f | 178 | list_for_each_entry_safe(cmdinfo, temp, &devinfo->inflight_list, list) |
673331c8 | 179 | uas_mark_cmd_dead(devinfo, cmdinfo, result, caller); |
4c456971 GH |
180 | spin_unlock_irqrestore(&devinfo->lock, flags); |
181 | } | |
182 | ||
1bf8198e GH |
183 | static void uas_add_work(struct uas_cmd_info *cmdinfo) |
184 | { | |
185 | struct scsi_pointer *scp = (void *)cmdinfo; | |
186 | struct scsi_cmnd *cmnd = container_of(scp, struct scsi_cmnd, SCp); | |
187 | struct uas_dev_info *devinfo = cmnd->device->hostdata; | |
188 | ||
ab945eff | 189 | lockdep_assert_held(&devinfo->lock); |
1bf8198e GH |
190 | cmdinfo->state |= IS_IN_WORK_LIST; |
191 | schedule_work(&devinfo->work); | |
192 | } | |
193 | ||
326349f8 GH |
194 | static void uas_zap_dead(struct uas_dev_info *devinfo) |
195 | { | |
196 | struct uas_cmd_info *cmdinfo; | |
197 | struct uas_cmd_info *temp; | |
198 | unsigned long flags; | |
199 | ||
200 | spin_lock_irqsave(&devinfo->lock, flags); | |
040d1a8f | 201 | list_for_each_entry_safe(cmdinfo, temp, &devinfo->dead_list, list) { |
326349f8 GH |
202 | struct scsi_pointer *scp = (void *)cmdinfo; |
203 | struct scsi_cmnd *cmnd = container_of(scp, struct scsi_cmnd, | |
204 | SCp); | |
205 | uas_log_cmd_state(cmnd, __func__); | |
f491ecbb | 206 | WARN_ON_ONCE(!(cmdinfo->state & COMMAND_ABORTED)); |
326349f8 GH |
207 | /* all urbs are killed, clear inflight bits */ |
208 | cmdinfo->state &= ~(COMMAND_INFLIGHT | | |
209 | DATA_IN_URB_INFLIGHT | | |
210 | DATA_OUT_URB_INFLIGHT); | |
211 | uas_try_complete(cmnd, __func__); | |
212 | } | |
213 | spin_unlock_irqrestore(&devinfo->lock, flags); | |
214 | } | |
215 | ||
115bb1ff MW |
216 | static void uas_sense(struct urb *urb, struct scsi_cmnd *cmnd) |
217 | { | |
218 | struct sense_iu *sense_iu = urb->transfer_buffer; | |
219 | struct scsi_device *sdev = cmnd->device; | |
220 | ||
221 | if (urb->actual_length > 16) { | |
222 | unsigned len = be16_to_cpup(&sense_iu->len); | |
223 | if (len + 16 != urb->actual_length) { | |
224 | int newlen = min(len + 16, urb->actual_length) - 16; | |
225 | if (newlen < 0) | |
226 | newlen = 0; | |
227 | sdev_printk(KERN_INFO, sdev, "%s: urb length %d " | |
228 | "disagrees with IU sense data length %d, " | |
229 | "using %d bytes of sense data\n", __func__, | |
230 | urb->actual_length, len, newlen); | |
231 | len = newlen; | |
232 | } | |
233 | memcpy(cmnd->sense_buffer, sense_iu->sense, len); | |
234 | } | |
235 | ||
236 | cmnd->result = sense_iu->status; | |
115bb1ff MW |
237 | } |
238 | ||
239 | static void uas_sense_old(struct urb *urb, struct scsi_cmnd *cmnd) | |
240 | { | |
241 | struct sense_iu_old *sense_iu = urb->transfer_buffer; | |
242 | struct scsi_device *sdev = cmnd->device; | |
243 | ||
244 | if (urb->actual_length > 8) { | |
245 | unsigned len = be16_to_cpup(&sense_iu->len) - 2; | |
246 | if (len + 8 != urb->actual_length) { | |
247 | int newlen = min(len + 8, urb->actual_length) - 8; | |
248 | if (newlen < 0) | |
249 | newlen = 0; | |
250 | sdev_printk(KERN_INFO, sdev, "%s: urb length %d " | |
251 | "disagrees with IU sense data length %d, " | |
252 | "using %d bytes of sense data\n", __func__, | |
253 | urb->actual_length, len, newlen); | |
254 | len = newlen; | |
255 | } | |
256 | memcpy(cmnd->sense_buffer, sense_iu->sense, len); | |
257 | } | |
258 | ||
259 | cmnd->result = sense_iu->status; | |
b1d67693 GH |
260 | } |
261 | ||
262 | static void uas_log_cmd_state(struct scsi_cmnd *cmnd, const char *caller) | |
263 | { | |
264 | struct uas_cmd_info *ci = (void *)&cmnd->SCp; | |
265 | ||
266 | scmd_printk(KERN_INFO, cmnd, "%s %p tag %d, inflight:" | |
efefecf3 | 267 | "%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n", |
b1d67693 GH |
268 | caller, cmnd, cmnd->request->tag, |
269 | (ci->state & SUBMIT_STATUS_URB) ? " s-st" : "", | |
270 | (ci->state & ALLOC_DATA_IN_URB) ? " a-in" : "", | |
271 | (ci->state & SUBMIT_DATA_IN_URB) ? " s-in" : "", | |
272 | (ci->state & ALLOC_DATA_OUT_URB) ? " a-out" : "", | |
273 | (ci->state & SUBMIT_DATA_OUT_URB) ? " s-out" : "", | |
274 | (ci->state & ALLOC_CMD_URB) ? " a-cmd" : "", | |
275 | (ci->state & SUBMIT_CMD_URB) ? " s-cmd" : "", | |
276 | (ci->state & COMMAND_INFLIGHT) ? " CMD" : "", | |
277 | (ci->state & DATA_IN_URB_INFLIGHT) ? " IN" : "", | |
278 | (ci->state & DATA_OUT_URB_INFLIGHT) ? " OUT" : "", | |
ef018cc9 | 279 | (ci->state & COMMAND_COMPLETED) ? " done" : "", |
b06e48af | 280 | (ci->state & COMMAND_ABORTED) ? " abort" : "", |
efefecf3 GH |
281 | (ci->state & UNLINK_DATA_URBS) ? " unlink": "", |
282 | (ci->state & IS_IN_WORK_LIST) ? " work" : ""); | |
b1d67693 GH |
283 | } |
284 | ||
285 | static int uas_try_complete(struct scsi_cmnd *cmnd, const char *caller) | |
286 | { | |
287 | struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; | |
e0648520 | 288 | struct uas_dev_info *devinfo = (void *)cmnd->device->hostdata; |
b1d67693 | 289 | |
ab945eff | 290 | lockdep_assert_held(&devinfo->lock); |
b1d67693 GH |
291 | if (cmdinfo->state & (COMMAND_INFLIGHT | |
292 | DATA_IN_URB_INFLIGHT | | |
b06e48af GH |
293 | DATA_OUT_URB_INFLIGHT | |
294 | UNLINK_DATA_URBS)) | |
b1d67693 | 295 | return -EBUSY; |
f491ecbb | 296 | WARN_ON_ONCE(cmdinfo->state & COMMAND_COMPLETED); |
b1d67693 GH |
297 | cmdinfo->state |= COMMAND_COMPLETED; |
298 | usb_free_urb(cmdinfo->data_in_urb); | |
299 | usb_free_urb(cmdinfo->data_out_urb); | |
673331c8 | 300 | if (cmdinfo->state & COMMAND_ABORTED) |
0871d7d8 | 301 | scmd_printk(KERN_INFO, cmnd, "abort completed\n"); |
040d1a8f | 302 | list_del(&cmdinfo->list); |
c621a81e | 303 | cmnd->scsi_done(cmnd); |
b1d67693 | 304 | return 0; |
115bb1ff MW |
305 | } |
306 | ||
307 | static void uas_xfer_data(struct urb *urb, struct scsi_cmnd *cmnd, | |
b1d67693 | 308 | unsigned direction) |
115bb1ff MW |
309 | { |
310 | struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; | |
311 | int err; | |
312 | ||
b1d67693 | 313 | cmdinfo->state |= direction | SUBMIT_STATUS_URB; |
115bb1ff MW |
314 | err = uas_submit_urbs(cmnd, cmnd->device->hostdata, GFP_ATOMIC); |
315 | if (err) { | |
1bf8198e | 316 | uas_add_work(cmdinfo); |
115bb1ff MW |
317 | } |
318 | } | |
319 | ||
320 | static void uas_stat_cmplt(struct urb *urb) | |
321 | { | |
322 | struct iu *iu = urb->transfer_buffer; | |
22188f4a | 323 | struct Scsi_Host *shost = urb->context; |
21fc05b6 | 324 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
115bb1ff | 325 | struct scsi_cmnd *cmnd; |
b1d67693 | 326 | struct uas_cmd_info *cmdinfo; |
e0648520 | 327 | unsigned long flags; |
115bb1ff MW |
328 | u16 tag; |
329 | ||
b7b5d11f HG |
330 | spin_lock_irqsave(&devinfo->lock, flags); |
331 | ||
332 | if (devinfo->resetting) | |
333 | goto out; | |
334 | ||
115bb1ff | 335 | if (urb->status) { |
326349f8 GH |
336 | if (urb->status == -ENOENT) { |
337 | dev_err(&urb->dev->dev, "stat urb: killed, stream %d\n", | |
338 | urb->stream_id); | |
339 | } else { | |
340 | dev_err(&urb->dev->dev, "stat urb: status %d\n", | |
341 | urb->status); | |
342 | } | |
b7b5d11f | 343 | goto out; |
023b515e GH |
344 | } |
345 | ||
115bb1ff | 346 | tag = be16_to_cpup(&iu->tag) - 1; |
22188f4a SAS |
347 | if (tag == 0) |
348 | cmnd = devinfo->cmnd; | |
115bb1ff | 349 | else |
22188f4a | 350 | cmnd = scsi_host_find_tag(shost, tag - 1); |
e0423dee | 351 | |
b7b5d11f HG |
352 | if (!cmnd) |
353 | goto out; | |
115bb1ff | 354 | |
e0423dee | 355 | cmdinfo = (void *)&cmnd->SCp; |
115bb1ff MW |
356 | switch (iu->iu_id) { |
357 | case IU_ID_STATUS: | |
22188f4a SAS |
358 | if (devinfo->cmnd == cmnd) |
359 | devinfo->cmnd = NULL; | |
360 | ||
115bb1ff MW |
361 | if (urb->actual_length < 16) |
362 | devinfo->uas_sense_old = 1; | |
363 | if (devinfo->uas_sense_old) | |
364 | uas_sense_old(urb, cmnd); | |
365 | else | |
366 | uas_sense(urb, cmnd); | |
8aac863e GH |
367 | if (cmnd->result != 0) { |
368 | /* cancel data transfers on error */ | |
7e50e0be | 369 | uas_unlink_data_urbs(devinfo, cmdinfo, &flags); |
8aac863e | 370 | } |
b1d67693 GH |
371 | cmdinfo->state &= ~COMMAND_INFLIGHT; |
372 | uas_try_complete(cmnd, __func__); | |
115bb1ff MW |
373 | break; |
374 | case IU_ID_READ_READY: | |
8e453155 HG |
375 | if (!cmdinfo->data_in_urb || |
376 | (cmdinfo->state & DATA_IN_URB_INFLIGHT)) { | |
377 | scmd_printk(KERN_ERR, cmnd, "unexpected read rdy\n"); | |
378 | break; | |
379 | } | |
115bb1ff MW |
380 | uas_xfer_data(urb, cmnd, SUBMIT_DATA_IN_URB); |
381 | break; | |
382 | case IU_ID_WRITE_READY: | |
8e453155 HG |
383 | if (!cmdinfo->data_out_urb || |
384 | (cmdinfo->state & DATA_OUT_URB_INFLIGHT)) { | |
385 | scmd_printk(KERN_ERR, cmnd, "unexpected write rdy\n"); | |
386 | break; | |
387 | } | |
115bb1ff MW |
388 | uas_xfer_data(urb, cmnd, SUBMIT_DATA_OUT_URB); |
389 | break; | |
390 | default: | |
391 | scmd_printk(KERN_ERR, cmnd, | |
392 | "Bogus IU (%d) received on status pipe\n", iu->iu_id); | |
393 | } | |
b7b5d11f | 394 | out: |
e9bd7e1a | 395 | usb_free_urb(urb); |
e0648520 | 396 | spin_unlock_irqrestore(&devinfo->lock, flags); |
115bb1ff MW |
397 | } |
398 | ||
c621a81e | 399 | static void uas_data_cmplt(struct urb *urb) |
115bb1ff | 400 | { |
b1d67693 GH |
401 | struct scsi_cmnd *cmnd = urb->context; |
402 | struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; | |
e0648520 | 403 | struct uas_dev_info *devinfo = (void *)cmnd->device->hostdata; |
b1d67693 | 404 | struct scsi_data_buffer *sdb = NULL; |
e0648520 | 405 | unsigned long flags; |
b1d67693 | 406 | |
e0648520 | 407 | spin_lock_irqsave(&devinfo->lock, flags); |
b7b5d11f | 408 | |
b1d67693 GH |
409 | if (cmdinfo->data_in_urb == urb) { |
410 | sdb = scsi_in(cmnd); | |
411 | cmdinfo->state &= ~DATA_IN_URB_INFLIGHT; | |
412 | } else if (cmdinfo->data_out_urb == urb) { | |
413 | sdb = scsi_out(cmnd); | |
414 | cmdinfo->state &= ~DATA_OUT_URB_INFLIGHT; | |
415 | } | |
f491ecbb GH |
416 | if (sdb == NULL) { |
417 | WARN_ON_ONCE(1); | |
b7b5d11f HG |
418 | goto out; |
419 | } | |
420 | ||
421 | if (devinfo->resetting) | |
422 | goto out; | |
423 | ||
424 | if (urb->status) { | |
876285cc HG |
425 | if (urb->status != -ECONNRESET) { |
426 | uas_log_cmd_state(cmnd, __func__); | |
427 | scmd_printk(KERN_ERR, cmnd, | |
428 | "data cmplt err %d stream %d\n", | |
429 | urb->status, urb->stream_id); | |
430 | } | |
8aac863e GH |
431 | /* error: no data transfered */ |
432 | sdb->resid = sdb->length; | |
433 | } else { | |
434 | sdb->resid = sdb->length - urb->actual_length; | |
435 | } | |
b1d67693 | 436 | uas_try_complete(cmnd, __func__); |
b7b5d11f | 437 | out: |
e0648520 | 438 | spin_unlock_irqrestore(&devinfo->lock, flags); |
115bb1ff MW |
439 | } |
440 | ||
876285cc HG |
441 | static void uas_cmd_cmplt(struct urb *urb) |
442 | { | |
443 | struct scsi_cmnd *cmnd = urb->context; | |
444 | ||
445 | if (urb->status) { | |
446 | uas_log_cmd_state(cmnd, __func__); | |
447 | scmd_printk(KERN_ERR, cmnd, "cmd cmplt err %d\n", urb->status); | |
448 | } | |
449 | usb_free_urb(urb); | |
450 | } | |
451 | ||
115bb1ff | 452 | static struct urb *uas_alloc_data_urb(struct uas_dev_info *devinfo, gfp_t gfp, |
b1d67693 GH |
453 | unsigned int pipe, u16 stream_id, |
454 | struct scsi_cmnd *cmnd, | |
455 | enum dma_data_direction dir) | |
115bb1ff MW |
456 | { |
457 | struct usb_device *udev = devinfo->udev; | |
458 | struct urb *urb = usb_alloc_urb(0, gfp); | |
b1d67693 GH |
459 | struct scsi_data_buffer *sdb = (dir == DMA_FROM_DEVICE) |
460 | ? scsi_in(cmnd) : scsi_out(cmnd); | |
115bb1ff MW |
461 | |
462 | if (!urb) | |
463 | goto out; | |
b1d67693 GH |
464 | usb_fill_bulk_urb(urb, udev, pipe, NULL, sdb->length, |
465 | uas_data_cmplt, cmnd); | |
c6d4579d | 466 | urb->stream_id = stream_id; |
115bb1ff MW |
467 | urb->num_sgs = udev->bus->sg_tablesize ? sdb->table.nents : 0; |
468 | urb->sg = sdb->table.sgl; | |
469 | out: | |
470 | return urb; | |
471 | } | |
472 | ||
473 | static struct urb *uas_alloc_sense_urb(struct uas_dev_info *devinfo, gfp_t gfp, | |
e9bd7e1a | 474 | struct Scsi_Host *shost, u16 stream_id) |
115bb1ff MW |
475 | { |
476 | struct usb_device *udev = devinfo->udev; | |
477 | struct urb *urb = usb_alloc_urb(0, gfp); | |
478 | struct sense_iu *iu; | |
479 | ||
480 | if (!urb) | |
481 | goto out; | |
482 | ||
ac563cfd | 483 | iu = kzalloc(sizeof(*iu), gfp); |
115bb1ff MW |
484 | if (!iu) |
485 | goto free; | |
486 | ||
487 | usb_fill_bulk_urb(urb, udev, devinfo->status_pipe, iu, sizeof(*iu), | |
e9bd7e1a | 488 | uas_stat_cmplt, shost); |
115bb1ff MW |
489 | urb->stream_id = stream_id; |
490 | urb->transfer_flags |= URB_FREE_BUFFER; | |
491 | out: | |
492 | return urb; | |
493 | free: | |
494 | usb_free_urb(urb); | |
495 | return NULL; | |
496 | } | |
497 | ||
498 | static struct urb *uas_alloc_cmd_urb(struct uas_dev_info *devinfo, gfp_t gfp, | |
a887cd36 | 499 | struct scsi_cmnd *cmnd) |
115bb1ff MW |
500 | { |
501 | struct usb_device *udev = devinfo->udev; | |
502 | struct scsi_device *sdev = cmnd->device; | |
503 | struct urb *urb = usb_alloc_urb(0, gfp); | |
504 | struct command_iu *iu; | |
505 | int len; | |
506 | ||
507 | if (!urb) | |
508 | goto out; | |
509 | ||
510 | len = cmnd->cmd_len - 16; | |
511 | if (len < 0) | |
512 | len = 0; | |
513 | len = ALIGN(len, 4); | |
ac563cfd | 514 | iu = kzalloc(sizeof(*iu) + len, gfp); |
115bb1ff MW |
515 | if (!iu) |
516 | goto free; | |
517 | ||
518 | iu->iu_id = IU_ID_COMMAND; | |
9eb44541 | 519 | if (blk_rq_tagged(cmnd->request)) |
22188f4a | 520 | iu->tag = cpu_to_be16(cmnd->request->tag + 2); |
9eb44541 SS |
521 | else |
522 | iu->tag = cpu_to_be16(1); | |
02e031cb | 523 | iu->prio_attr = UAS_SIMPLE_TAG; |
115bb1ff MW |
524 | iu->len = len; |
525 | int_to_scsilun(sdev->lun, &iu->lun); | |
526 | memcpy(iu->cdb, cmnd->cmnd, cmnd->cmd_len); | |
527 | ||
528 | usb_fill_bulk_urb(urb, udev, devinfo->cmd_pipe, iu, sizeof(*iu) + len, | |
876285cc | 529 | uas_cmd_cmplt, cmnd); |
115bb1ff MW |
530 | urb->transfer_flags |= URB_FREE_BUFFER; |
531 | out: | |
532 | return urb; | |
533 | free: | |
534 | usb_free_urb(urb); | |
535 | return NULL; | |
536 | } | |
537 | ||
538 | /* | |
539 | * Why should I request the Status IU before sending the Command IU? Spec | |
540 | * says to, but also says the device may receive them in any order. Seems | |
541 | * daft to me. | |
542 | */ | |
543 | ||
876285cc | 544 | static struct urb *uas_submit_sense_urb(struct scsi_cmnd *cmnd, |
70cf0fba | 545 | gfp_t gfp, unsigned int stream) |
115bb1ff | 546 | { |
876285cc | 547 | struct Scsi_Host *shost = cmnd->device->host; |
21fc05b6 | 548 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
e9bd7e1a | 549 | struct urb *urb; |
876285cc | 550 | int err; |
115bb1ff | 551 | |
e9bd7e1a GH |
552 | urb = uas_alloc_sense_urb(devinfo, gfp, shost, stream); |
553 | if (!urb) | |
70cf0fba | 554 | return NULL; |
d5f808d3 | 555 | usb_anchor_urb(urb, &devinfo->sense_urbs); |
876285cc HG |
556 | err = usb_submit_urb(urb, gfp); |
557 | if (err) { | |
d5f808d3 | 558 | usb_unanchor_urb(urb); |
876285cc | 559 | uas_log_cmd_state(cmnd, __func__); |
e9bd7e1a | 560 | shost_printk(KERN_INFO, shost, |
876285cc HG |
561 | "sense urb submission error %d stream %d\n", |
562 | err, stream); | |
e9bd7e1a | 563 | usb_free_urb(urb); |
70cf0fba | 564 | return NULL; |
115bb1ff | 565 | } |
70cf0fba | 566 | return urb; |
e9bd7e1a GH |
567 | } |
568 | ||
569 | static int uas_submit_urbs(struct scsi_cmnd *cmnd, | |
570 | struct uas_dev_info *devinfo, gfp_t gfp) | |
571 | { | |
572 | struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; | |
70cf0fba | 573 | struct urb *urb; |
876285cc | 574 | int err; |
115bb1ff | 575 | |
ab945eff | 576 | lockdep_assert_held(&devinfo->lock); |
92a3f767 | 577 | if (cmdinfo->state & SUBMIT_STATUS_URB) { |
876285cc | 578 | urb = uas_submit_sense_urb(cmnd, gfp, cmdinfo->stream); |
70cf0fba HG |
579 | if (!urb) |
580 | return SCSI_MLQUEUE_DEVICE_BUSY; | |
92a3f767 | 581 | cmdinfo->state &= ~SUBMIT_STATUS_URB; |
115bb1ff MW |
582 | } |
583 | ||
584 | if (cmdinfo->state & ALLOC_DATA_IN_URB) { | |
585 | cmdinfo->data_in_urb = uas_alloc_data_urb(devinfo, gfp, | |
c621a81e | 586 | devinfo->data_in_pipe, cmdinfo->stream, |
b1d67693 | 587 | cmnd, DMA_FROM_DEVICE); |
115bb1ff MW |
588 | if (!cmdinfo->data_in_urb) |
589 | return SCSI_MLQUEUE_DEVICE_BUSY; | |
590 | cmdinfo->state &= ~ALLOC_DATA_IN_URB; | |
591 | } | |
592 | ||
593 | if (cmdinfo->state & SUBMIT_DATA_IN_URB) { | |
d5f808d3 | 594 | usb_anchor_urb(cmdinfo->data_in_urb, &devinfo->data_urbs); |
876285cc HG |
595 | err = usb_submit_urb(cmdinfo->data_in_urb, gfp); |
596 | if (err) { | |
d5f808d3 | 597 | usb_unanchor_urb(cmdinfo->data_in_urb); |
876285cc | 598 | uas_log_cmd_state(cmnd, __func__); |
115bb1ff | 599 | scmd_printk(KERN_INFO, cmnd, |
876285cc HG |
600 | "data in urb submission error %d stream %d\n", |
601 | err, cmdinfo->data_in_urb->stream_id); | |
115bb1ff MW |
602 | return SCSI_MLQUEUE_DEVICE_BUSY; |
603 | } | |
604 | cmdinfo->state &= ~SUBMIT_DATA_IN_URB; | |
b1d67693 | 605 | cmdinfo->state |= DATA_IN_URB_INFLIGHT; |
115bb1ff MW |
606 | } |
607 | ||
608 | if (cmdinfo->state & ALLOC_DATA_OUT_URB) { | |
609 | cmdinfo->data_out_urb = uas_alloc_data_urb(devinfo, gfp, | |
c621a81e | 610 | devinfo->data_out_pipe, cmdinfo->stream, |
b1d67693 | 611 | cmnd, DMA_TO_DEVICE); |
115bb1ff MW |
612 | if (!cmdinfo->data_out_urb) |
613 | return SCSI_MLQUEUE_DEVICE_BUSY; | |
614 | cmdinfo->state &= ~ALLOC_DATA_OUT_URB; | |
615 | } | |
616 | ||
617 | if (cmdinfo->state & SUBMIT_DATA_OUT_URB) { | |
d5f808d3 | 618 | usb_anchor_urb(cmdinfo->data_out_urb, &devinfo->data_urbs); |
876285cc HG |
619 | err = usb_submit_urb(cmdinfo->data_out_urb, gfp); |
620 | if (err) { | |
d5f808d3 | 621 | usb_unanchor_urb(cmdinfo->data_out_urb); |
876285cc | 622 | uas_log_cmd_state(cmnd, __func__); |
115bb1ff | 623 | scmd_printk(KERN_INFO, cmnd, |
876285cc HG |
624 | "data out urb submission error %d stream %d\n", |
625 | err, cmdinfo->data_out_urb->stream_id); | |
115bb1ff MW |
626 | return SCSI_MLQUEUE_DEVICE_BUSY; |
627 | } | |
628 | cmdinfo->state &= ~SUBMIT_DATA_OUT_URB; | |
b1d67693 | 629 | cmdinfo->state |= DATA_OUT_URB_INFLIGHT; |
115bb1ff MW |
630 | } |
631 | ||
632 | if (cmdinfo->state & ALLOC_CMD_URB) { | |
a887cd36 | 633 | cmdinfo->cmd_urb = uas_alloc_cmd_urb(devinfo, gfp, cmnd); |
115bb1ff MW |
634 | if (!cmdinfo->cmd_urb) |
635 | return SCSI_MLQUEUE_DEVICE_BUSY; | |
636 | cmdinfo->state &= ~ALLOC_CMD_URB; | |
637 | } | |
638 | ||
639 | if (cmdinfo->state & SUBMIT_CMD_URB) { | |
d5f808d3 | 640 | usb_anchor_urb(cmdinfo->cmd_urb, &devinfo->cmd_urbs); |
876285cc HG |
641 | err = usb_submit_urb(cmdinfo->cmd_urb, gfp); |
642 | if (err) { | |
d5f808d3 | 643 | usb_unanchor_urb(cmdinfo->cmd_urb); |
876285cc | 644 | uas_log_cmd_state(cmnd, __func__); |
115bb1ff | 645 | scmd_printk(KERN_INFO, cmnd, |
876285cc | 646 | "cmd urb submission error %d\n", err); |
115bb1ff MW |
647 | return SCSI_MLQUEUE_DEVICE_BUSY; |
648 | } | |
a0e39e34 | 649 | cmdinfo->cmd_urb = NULL; |
115bb1ff | 650 | cmdinfo->state &= ~SUBMIT_CMD_URB; |
b1d67693 | 651 | cmdinfo->state |= COMMAND_INFLIGHT; |
115bb1ff MW |
652 | } |
653 | ||
654 | return 0; | |
655 | } | |
656 | ||
f281233d | 657 | static int uas_queuecommand_lck(struct scsi_cmnd *cmnd, |
115bb1ff MW |
658 | void (*done)(struct scsi_cmnd *)) |
659 | { | |
660 | struct scsi_device *sdev = cmnd->device; | |
661 | struct uas_dev_info *devinfo = sdev->hostdata; | |
662 | struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; | |
e0648520 | 663 | unsigned long flags; |
115bb1ff MW |
664 | int err; |
665 | ||
666 | BUILD_BUG_ON(sizeof(struct uas_cmd_info) > sizeof(struct scsi_pointer)); | |
667 | ||
59307852 HG |
668 | if ((devinfo->flags & US_FL_NO_ATA_1X) && |
669 | (cmnd->cmnd[0] == ATA_12 || cmnd->cmnd[0] == ATA_16)) { | |
670 | memcpy(cmnd->sense_buffer, usb_stor_sense_invalidCDB, | |
671 | sizeof(usb_stor_sense_invalidCDB)); | |
672 | cmnd->result = SAM_STAT_CHECK_CONDITION; | |
673 | cmnd->scsi_done(cmnd); | |
674 | return 0; | |
675 | } | |
676 | ||
c6f63207 HG |
677 | spin_lock_irqsave(&devinfo->lock, flags); |
678 | ||
f8be6bfc GH |
679 | if (devinfo->resetting) { |
680 | cmnd->result = DID_ERROR << 16; | |
681 | cmnd->scsi_done(cmnd); | |
c6f63207 | 682 | spin_unlock_irqrestore(&devinfo->lock, flags); |
f8be6bfc GH |
683 | return 0; |
684 | } | |
685 | ||
e0648520 GH |
686 | if (devinfo->cmnd) { |
687 | spin_unlock_irqrestore(&devinfo->lock, flags); | |
115bb1ff | 688 | return SCSI_MLQUEUE_DEVICE_BUSY; |
e0648520 | 689 | } |
115bb1ff | 690 | |
3a4462e0 HG |
691 | memset(cmdinfo, 0, sizeof(*cmdinfo)); |
692 | ||
115bb1ff | 693 | if (blk_rq_tagged(cmnd->request)) { |
22188f4a | 694 | cmdinfo->stream = cmnd->request->tag + 2; |
115bb1ff | 695 | } else { |
22188f4a | 696 | devinfo->cmnd = cmnd; |
115bb1ff MW |
697 | cmdinfo->stream = 1; |
698 | } | |
699 | ||
700 | cmnd->scsi_done = done; | |
701 | ||
e9bd7e1a | 702 | cmdinfo->state = SUBMIT_STATUS_URB | |
115bb1ff MW |
703 | ALLOC_CMD_URB | SUBMIT_CMD_URB; |
704 | ||
705 | switch (cmnd->sc_data_direction) { | |
706 | case DMA_FROM_DEVICE: | |
707 | cmdinfo->state |= ALLOC_DATA_IN_URB | SUBMIT_DATA_IN_URB; | |
708 | break; | |
709 | case DMA_BIDIRECTIONAL: | |
710 | cmdinfo->state |= ALLOC_DATA_IN_URB | SUBMIT_DATA_IN_URB; | |
711 | case DMA_TO_DEVICE: | |
712 | cmdinfo->state |= ALLOC_DATA_OUT_URB | SUBMIT_DATA_OUT_URB; | |
713 | case DMA_NONE: | |
714 | break; | |
715 | } | |
716 | ||
717 | if (!devinfo->use_streams) { | |
db32de11 | 718 | cmdinfo->state &= ~(SUBMIT_DATA_IN_URB | SUBMIT_DATA_OUT_URB); |
115bb1ff MW |
719 | cmdinfo->stream = 0; |
720 | } | |
721 | ||
722 | err = uas_submit_urbs(cmnd, devinfo, GFP_ATOMIC); | |
723 | if (err) { | |
724 | /* If we did nothing, give up now */ | |
92a3f767 | 725 | if (cmdinfo->state & SUBMIT_STATUS_URB) { |
e0648520 | 726 | spin_unlock_irqrestore(&devinfo->lock, flags); |
115bb1ff MW |
727 | return SCSI_MLQUEUE_DEVICE_BUSY; |
728 | } | |
1bf8198e | 729 | uas_add_work(cmdinfo); |
115bb1ff MW |
730 | } |
731 | ||
040d1a8f | 732 | list_add_tail(&cmdinfo->list, &devinfo->inflight_list); |
e0648520 | 733 | spin_unlock_irqrestore(&devinfo->lock, flags); |
115bb1ff MW |
734 | return 0; |
735 | } | |
736 | ||
f281233d JG |
737 | static DEF_SCSI_QCMD(uas_queuecommand) |
738 | ||
115bb1ff MW |
739 | static int uas_eh_bus_reset_handler(struct scsi_cmnd *cmnd) |
740 | { | |
741 | struct scsi_device *sdev = cmnd->device; | |
742 | struct uas_dev_info *devinfo = sdev->hostdata; | |
743 | struct usb_device *udev = devinfo->udev; | |
b7b5d11f | 744 | unsigned long flags; |
023b515e | 745 | int err; |
115bb1ff | 746 | |
be326f4c HG |
747 | err = usb_lock_device_for_reset(udev, devinfo->intf); |
748 | if (err) { | |
749 | shost_printk(KERN_ERR, sdev->host, | |
750 | "%s FAILED to get lock err %d\n", __func__, err); | |
751 | return FAILED; | |
752 | } | |
753 | ||
326349f8 | 754 | shost_printk(KERN_INFO, sdev->host, "%s start\n", __func__); |
b7b5d11f HG |
755 | |
756 | spin_lock_irqsave(&devinfo->lock, flags); | |
023b515e | 757 | devinfo->resetting = 1; |
b7b5d11f HG |
758 | spin_unlock_irqrestore(&devinfo->lock, flags); |
759 | ||
673331c8 | 760 | uas_abort_inflight(devinfo, DID_RESET, __func__); |
a0e39e34 | 761 | usb_kill_anchored_urbs(&devinfo->cmd_urbs); |
023b515e GH |
762 | usb_kill_anchored_urbs(&devinfo->sense_urbs); |
763 | usb_kill_anchored_urbs(&devinfo->data_urbs); | |
326349f8 | 764 | uas_zap_dead(devinfo); |
023b515e | 765 | err = usb_reset_device(udev); |
b7b5d11f HG |
766 | |
767 | spin_lock_irqsave(&devinfo->lock, flags); | |
023b515e | 768 | devinfo->resetting = 0; |
b7b5d11f | 769 | spin_unlock_irqrestore(&devinfo->lock, flags); |
115bb1ff | 770 | |
be326f4c HG |
771 | usb_unlock_device(udev); |
772 | ||
023b515e GH |
773 | if (err) { |
774 | shost_printk(KERN_INFO, sdev->host, "%s FAILED\n", __func__); | |
775 | return FAILED; | |
776 | } | |
115bb1ff | 777 | |
023b515e GH |
778 | shost_printk(KERN_INFO, sdev->host, "%s success\n", __func__); |
779 | return SUCCESS; | |
115bb1ff MW |
780 | } |
781 | ||
782 | static int uas_slave_alloc(struct scsi_device *sdev) | |
783 | { | |
21fc05b6 | 784 | sdev->hostdata = (void *)sdev->host->hostdata; |
37599f96 HG |
785 | |
786 | /* USB has unusual DMA-alignment requirements: Although the | |
787 | * starting address of each scatter-gather element doesn't matter, | |
788 | * the length of each element except the last must be divisible | |
789 | * by the Bulk maxpacket value. There's currently no way to | |
790 | * express this by block-layer constraints, so we'll cop out | |
791 | * and simply require addresses to be aligned at 512-byte | |
792 | * boundaries. This is okay since most block I/O involves | |
793 | * hardware sectors that are multiples of 512 bytes in length, | |
794 | * and since host controllers up through USB 2.0 have maxpacket | |
795 | * values no larger than 512. | |
796 | * | |
797 | * But it doesn't suffice for Wireless USB, where Bulk maxpacket | |
798 | * values can be as large as 2048. To make that work properly | |
799 | * will require changes to the block layer. | |
800 | */ | |
801 | blk_queue_update_dma_alignment(sdev->request_queue, (512 - 1)); | |
802 | ||
115bb1ff MW |
803 | return 0; |
804 | } | |
805 | ||
806 | static int uas_slave_configure(struct scsi_device *sdev) | |
807 | { | |
808 | struct uas_dev_info *devinfo = sdev->hostdata; | |
734016b0 HG |
809 | |
810 | if (devinfo->flags & US_FL_NO_REPORT_OPCODES) | |
811 | sdev->no_report_opcodes = 1; | |
812 | ||
115bb1ff | 813 | scsi_set_tag_type(sdev, MSG_ORDERED_TAG); |
d3f7c156 | 814 | scsi_activate_tcq(sdev, devinfo->qdepth - 2); |
115bb1ff MW |
815 | return 0; |
816 | } | |
817 | ||
818 | static struct scsi_host_template uas_host_template = { | |
819 | .module = THIS_MODULE, | |
820 | .name = "uas", | |
821 | .queuecommand = uas_queuecommand, | |
822 | .slave_alloc = uas_slave_alloc, | |
823 | .slave_configure = uas_slave_configure, | |
115bb1ff MW |
824 | .eh_bus_reset_handler = uas_eh_bus_reset_handler, |
825 | .can_queue = 65536, /* Is there a limit on the _host_ ? */ | |
826 | .this_id = -1, | |
827 | .sg_tablesize = SG_NONE, | |
828 | .cmd_per_lun = 1, /* until we override it */ | |
829 | .skip_settle_delay = 1, | |
830 | .ordered_tag = 1, | |
831 | }; | |
832 | ||
79b4c061 HG |
833 | #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \ |
834 | vendorName, productName, useProtocol, useTransport, \ | |
835 | initFunction, flags) \ | |
836 | { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ | |
837 | .driver_info = (flags) } | |
838 | ||
115bb1ff | 839 | static struct usb_device_id uas_usb_ids[] = { |
79b4c061 | 840 | # include "unusual_uas.h" |
115bb1ff MW |
841 | { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, USB_SC_SCSI, USB_PR_BULK) }, |
842 | { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, USB_SC_SCSI, USB_PR_UAS) }, | |
843 | /* 0xaa is a prototype device I happen to have access to */ | |
844 | { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, USB_SC_SCSI, 0xaa) }, | |
845 | { } | |
846 | }; | |
847 | MODULE_DEVICE_TABLE(usb, uas_usb_ids); | |
848 | ||
79b4c061 HG |
849 | #undef UNUSUAL_DEV |
850 | ||
e1be067b HG |
851 | static int uas_switch_interface(struct usb_device *udev, |
852 | struct usb_interface *intf) | |
853 | { | |
854 | int alt; | |
855 | ||
856 | alt = uas_find_uas_alt_setting(intf); | |
857 | if (alt < 0) | |
858 | return alt; | |
859 | ||
860 | return usb_set_interface(udev, | |
861 | intf->altsetting[0].desc.bInterfaceNumber, alt); | |
862 | } | |
863 | ||
58d51444 | 864 | static int uas_configure_endpoints(struct uas_dev_info *devinfo) |
34f11e59 HG |
865 | { |
866 | struct usb_host_endpoint *eps[4] = { }; | |
867 | struct usb_device *udev = devinfo->udev; | |
868 | int r; | |
869 | ||
870 | devinfo->uas_sense_old = 0; | |
871 | devinfo->cmnd = NULL; | |
872 | ||
873 | r = uas_find_endpoints(devinfo->intf->cur_altsetting, eps); | |
74d71aec HG |
874 | if (r) |
875 | return r; | |
876 | ||
877 | devinfo->cmd_pipe = usb_sndbulkpipe(udev, | |
878 | usb_endpoint_num(&eps[0]->desc)); | |
879 | devinfo->status_pipe = usb_rcvbulkpipe(udev, | |
880 | usb_endpoint_num(&eps[1]->desc)); | |
881 | devinfo->data_in_pipe = usb_rcvbulkpipe(udev, | |
882 | usb_endpoint_num(&eps[2]->desc)); | |
883 | devinfo->data_out_pipe = usb_sndbulkpipe(udev, | |
884 | usb_endpoint_num(&eps[3]->desc)); | |
115bb1ff | 885 | |
58d51444 | 886 | if (udev->speed != USB_SPEED_SUPER) { |
e2875c33 | 887 | devinfo->qdepth = 32; |
115bb1ff MW |
888 | devinfo->use_streams = 0; |
889 | } else { | |
58d51444 | 890 | devinfo->qdepth = usb_alloc_streams(devinfo->intf, eps + 1, |
94d72f00 | 891 | 3, 256, GFP_NOIO); |
58d51444 HG |
892 | if (devinfo->qdepth < 0) |
893 | return devinfo->qdepth; | |
115bb1ff MW |
894 | devinfo->use_streams = 1; |
895 | } | |
58d51444 HG |
896 | |
897 | return 0; | |
115bb1ff MW |
898 | } |
899 | ||
dae51546 SAS |
900 | static void uas_free_streams(struct uas_dev_info *devinfo) |
901 | { | |
902 | struct usb_device *udev = devinfo->udev; | |
903 | struct usb_host_endpoint *eps[3]; | |
904 | ||
905 | eps[0] = usb_pipe_endpoint(udev, devinfo->status_pipe); | |
906 | eps[1] = usb_pipe_endpoint(udev, devinfo->data_in_pipe); | |
907 | eps[2] = usb_pipe_endpoint(udev, devinfo->data_out_pipe); | |
94d72f00 | 908 | usb_free_streams(devinfo->intf, eps, 3, GFP_NOIO); |
dae51546 SAS |
909 | } |
910 | ||
115bb1ff MW |
911 | static int uas_probe(struct usb_interface *intf, const struct usb_device_id *id) |
912 | { | |
6ce8213b HG |
913 | int result = -ENOMEM; |
914 | struct Scsi_Host *shost = NULL; | |
115bb1ff MW |
915 | struct uas_dev_info *devinfo; |
916 | struct usb_device *udev = interface_to_usbdev(intf); | |
917 | ||
79b4c061 HG |
918 | if (!uas_use_uas_driver(intf, id)) |
919 | return -ENODEV; | |
920 | ||
89dc2905 MW |
921 | if (uas_switch_interface(udev, intf)) |
922 | return -ENODEV; | |
115bb1ff | 923 | |
21fc05b6 HG |
924 | shost = scsi_host_alloc(&uas_host_template, |
925 | sizeof(struct uas_dev_info)); | |
115bb1ff | 926 | if (!shost) |
6ce8213b | 927 | goto set_alt0; |
115bb1ff MW |
928 | |
929 | shost->max_cmd_len = 16 + 252; | |
930 | shost->max_id = 1; | |
bde027b4 GH |
931 | shost->max_lun = 256; |
932 | shost->max_channel = 0; | |
115bb1ff MW |
933 | shost->sg_tablesize = udev->bus->sg_tablesize; |
934 | ||
21fc05b6 | 935 | devinfo = (struct uas_dev_info *)shost->hostdata; |
115bb1ff MW |
936 | devinfo->intf = intf; |
937 | devinfo->udev = udev; | |
023b515e | 938 | devinfo->resetting = 0; |
da65c2bb | 939 | devinfo->shutdown = 0; |
59307852 HG |
940 | devinfo->flags = id->driver_info; |
941 | usb_stor_adjust_quirks(udev, &devinfo->flags); | |
a0e39e34 | 942 | init_usb_anchor(&devinfo->cmd_urbs); |
bdd000fb GH |
943 | init_usb_anchor(&devinfo->sense_urbs); |
944 | init_usb_anchor(&devinfo->data_urbs); | |
e0648520 | 945 | spin_lock_init(&devinfo->lock); |
1bf8198e | 946 | INIT_WORK(&devinfo->work, uas_do_work); |
61c09ce5 | 947 | INIT_LIST_HEAD(&devinfo->inflight_list); |
326349f8 | 948 | INIT_LIST_HEAD(&devinfo->dead_list); |
58d51444 HG |
949 | |
950 | result = uas_configure_endpoints(devinfo); | |
951 | if (result) | |
952 | goto set_alt0; | |
115bb1ff | 953 | |
d3f7c156 | 954 | result = scsi_init_shared_tag_map(shost, devinfo->qdepth - 2); |
115bb1ff | 955 | if (result) |
6ce8213b | 956 | goto free_streams; |
dae51546 | 957 | |
c637f1fa | 958 | usb_set_intfdata(intf, shost); |
dae51546 SAS |
959 | result = scsi_add_host(shost, &intf->dev); |
960 | if (result) | |
6ce8213b | 961 | goto free_streams; |
dae51546 | 962 | |
115bb1ff | 963 | scsi_scan_host(shost); |
115bb1ff | 964 | return result; |
dae51546 | 965 | |
6ce8213b | 966 | free_streams: |
dae51546 | 967 | uas_free_streams(devinfo); |
c637f1fa | 968 | usb_set_intfdata(intf, NULL); |
6ce8213b HG |
969 | set_alt0: |
970 | usb_set_interface(udev, intf->altsetting[0].desc.bInterfaceNumber, 0); | |
115bb1ff MW |
971 | if (shost) |
972 | scsi_host_put(shost); | |
973 | return result; | |
974 | } | |
975 | ||
976 | static int uas_pre_reset(struct usb_interface *intf) | |
977 | { | |
4de7a373 | 978 | struct Scsi_Host *shost = usb_get_intfdata(intf); |
21fc05b6 | 979 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
4de7a373 HG |
980 | unsigned long flags; |
981 | ||
da65c2bb HG |
982 | if (devinfo->shutdown) |
983 | return 0; | |
984 | ||
4de7a373 HG |
985 | /* Block new requests */ |
986 | spin_lock_irqsave(shost->host_lock, flags); | |
987 | scsi_block_requests(shost); | |
988 | spin_unlock_irqrestore(shost->host_lock, flags); | |
989 | ||
990 | /* Wait for any pending requests to complete */ | |
991 | flush_work(&devinfo->work); | |
992 | if (usb_wait_anchor_empty_timeout(&devinfo->sense_urbs, 5000) == 0) { | |
993 | shost_printk(KERN_ERR, shost, "%s: timed out\n", __func__); | |
994 | return 1; | |
995 | } | |
996 | ||
997 | uas_free_streams(devinfo); | |
998 | ||
115bb1ff MW |
999 | return 0; |
1000 | } | |
1001 | ||
1002 | static int uas_post_reset(struct usb_interface *intf) | |
1003 | { | |
4de7a373 | 1004 | struct Scsi_Host *shost = usb_get_intfdata(intf); |
21fc05b6 | 1005 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
4de7a373 HG |
1006 | unsigned long flags; |
1007 | ||
da65c2bb HG |
1008 | if (devinfo->shutdown) |
1009 | return 0; | |
1010 | ||
58d51444 HG |
1011 | if (uas_configure_endpoints(devinfo) != 0) { |
1012 | shost_printk(KERN_ERR, shost, | |
1013 | "%s: alloc streams error after reset", __func__); | |
1014 | return 1; | |
1015 | } | |
4de7a373 HG |
1016 | |
1017 | spin_lock_irqsave(shost->host_lock, flags); | |
1018 | scsi_report_bus_reset(shost, 0); | |
1019 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1020 | ||
1021 | scsi_unblock_requests(shost); | |
1022 | ||
115bb1ff MW |
1023 | return 0; |
1024 | } | |
1025 | ||
0df1f663 HG |
1026 | static int uas_suspend(struct usb_interface *intf, pm_message_t message) |
1027 | { | |
1028 | struct Scsi_Host *shost = usb_get_intfdata(intf); | |
21fc05b6 | 1029 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
0df1f663 HG |
1030 | |
1031 | /* Wait for any pending requests to complete */ | |
1032 | flush_work(&devinfo->work); | |
1033 | if (usb_wait_anchor_empty_timeout(&devinfo->sense_urbs, 5000) == 0) { | |
1034 | shost_printk(KERN_ERR, shost, "%s: timed out\n", __func__); | |
1035 | return -ETIME; | |
1036 | } | |
1037 | ||
1038 | return 0; | |
1039 | } | |
1040 | ||
1041 | static int uas_resume(struct usb_interface *intf) | |
1042 | { | |
1043 | return 0; | |
1044 | } | |
1045 | ||
1046 | static int uas_reset_resume(struct usb_interface *intf) | |
1047 | { | |
1048 | struct Scsi_Host *shost = usb_get_intfdata(intf); | |
21fc05b6 | 1049 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
0df1f663 HG |
1050 | unsigned long flags; |
1051 | ||
1052 | if (uas_configure_endpoints(devinfo) != 0) { | |
1053 | shost_printk(KERN_ERR, shost, | |
1054 | "%s: alloc streams error after reset", __func__); | |
1055 | return -EIO; | |
1056 | } | |
1057 | ||
1058 | spin_lock_irqsave(shost->host_lock, flags); | |
1059 | scsi_report_bus_reset(shost, 0); | |
1060 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1061 | ||
1062 | return 0; | |
1063 | } | |
1064 | ||
115bb1ff MW |
1065 | static void uas_disconnect(struct usb_interface *intf) |
1066 | { | |
115bb1ff | 1067 | struct Scsi_Host *shost = usb_get_intfdata(intf); |
21fc05b6 | 1068 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
b7b5d11f | 1069 | unsigned long flags; |
115bb1ff | 1070 | |
b7b5d11f | 1071 | spin_lock_irqsave(&devinfo->lock, flags); |
4c456971 | 1072 | devinfo->resetting = 1; |
b7b5d11f HG |
1073 | spin_unlock_irqrestore(&devinfo->lock, flags); |
1074 | ||
1bf8198e | 1075 | cancel_work_sync(&devinfo->work); |
673331c8 | 1076 | uas_abort_inflight(devinfo, DID_NO_CONNECT, __func__); |
a0e39e34 | 1077 | usb_kill_anchored_urbs(&devinfo->cmd_urbs); |
bdd000fb GH |
1078 | usb_kill_anchored_urbs(&devinfo->sense_urbs); |
1079 | usb_kill_anchored_urbs(&devinfo->data_urbs); | |
326349f8 | 1080 | uas_zap_dead(devinfo); |
4c456971 | 1081 | scsi_remove_host(shost); |
dae51546 | 1082 | uas_free_streams(devinfo); |
21fc05b6 | 1083 | scsi_host_put(shost); |
115bb1ff MW |
1084 | } |
1085 | ||
da65c2bb HG |
1086 | /* |
1087 | * Put the device back in usb-storage mode on shutdown, as some BIOS-es | |
1088 | * hang on reboot when the device is still in uas mode. Note the reset is | |
1089 | * necessary as some devices won't revert to usb-storage mode without it. | |
1090 | */ | |
1091 | static void uas_shutdown(struct device *dev) | |
1092 | { | |
1093 | struct usb_interface *intf = to_usb_interface(dev); | |
1094 | struct usb_device *udev = interface_to_usbdev(intf); | |
1095 | struct Scsi_Host *shost = usb_get_intfdata(intf); | |
21fc05b6 | 1096 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
da65c2bb HG |
1097 | |
1098 | if (system_state != SYSTEM_RESTART) | |
1099 | return; | |
1100 | ||
1101 | devinfo->shutdown = 1; | |
1102 | uas_free_streams(devinfo); | |
1103 | usb_set_interface(udev, intf->altsetting[0].desc.bInterfaceNumber, 0); | |
1104 | usb_reset_device(udev); | |
1105 | } | |
1106 | ||
115bb1ff MW |
1107 | static struct usb_driver uas_driver = { |
1108 | .name = "uas", | |
1109 | .probe = uas_probe, | |
1110 | .disconnect = uas_disconnect, | |
1111 | .pre_reset = uas_pre_reset, | |
1112 | .post_reset = uas_post_reset, | |
0df1f663 HG |
1113 | .suspend = uas_suspend, |
1114 | .resume = uas_resume, | |
1115 | .reset_resume = uas_reset_resume, | |
da65c2bb | 1116 | .drvwrap.driver.shutdown = uas_shutdown, |
115bb1ff MW |
1117 | .id_table = uas_usb_ids, |
1118 | }; | |
1119 | ||
65db4305 | 1120 | module_usb_driver(uas_driver); |
115bb1ff MW |
1121 | |
1122 | MODULE_LICENSE("GPL"); | |
f50a4968 HG |
1123 | MODULE_AUTHOR( |
1124 | "Hans de Goede <hdegoede@redhat.com>, Matthew Wilcox and Sarah Sharp"); |