Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 1 | /* |
| 2 | * USB Attached SCSI |
| 3 | * Note that this is not the same as the USB Mass Storage driver |
| 4 | * |
Hans de Goede | 5df2be6 | 2014-09-13 12:26:29 +0200 | [diff] [blame] | 5 | * Copyright Hans de Goede <hdegoede@redhat.com> for Red Hat, Inc. 2013 - 2014 |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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> |
Paul Gortmaker | 6eb0de8 | 2011-07-03 16:09:31 -0400 | [diff] [blame] | 15 | #include <linux/module.h> |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 16 | #include <linux/usb.h> |
Hans de Goede | 79b4c06 | 2013-10-25 17:04:33 +0100 | [diff] [blame] | 17 | #include <linux/usb_usual.h> |
Sebastian Andrzej Siewior | c898add | 2012-01-11 12:42:32 +0100 | [diff] [blame] | 18 | #include <linux/usb/hcd.h> |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 19 | #include <linux/usb/storage.h> |
Sebastian Andrzej Siewior | 348748b | 2012-01-11 12:45:56 +0100 | [diff] [blame] | 20 | #include <linux/usb/uas.h> |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 21 | |
| 22 | #include <scsi/scsi.h> |
Hans de Goede | 4de7a373 | 2013-10-22 16:10:44 +0100 | [diff] [blame] | 23 | #include <scsi/scsi_eh.h> |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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 | |
Hans de Goede | 82aa038 | 2013-10-21 08:53:31 +0100 | [diff] [blame] | 30 | #include "uas-detect.h" |
Hans de Goede | 5930785 | 2014-09-15 16:04:12 +0200 | [diff] [blame] | 31 | #include "scsiglue.h" |
Hans de Goede | 82aa038 | 2013-10-21 08:53:31 +0100 | [diff] [blame] | 32 | |
Hans de Goede | 5e61aed | 2014-09-13 12:26:32 +0200 | [diff] [blame] | 33 | #define MAX_CMNDS 256 |
| 34 | |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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 | |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 49 | struct uas_dev_info { |
| 50 | struct usb_interface *intf; |
| 51 | struct usb_device *udev; |
Gerd Hoffmann | a0e39e3 | 2012-09-25 10:47:04 +0200 | [diff] [blame] | 52 | struct usb_anchor cmd_urbs; |
Gerd Hoffmann | bdd000f | 2012-06-19 09:54:53 +0200 | [diff] [blame] | 53 | struct usb_anchor sense_urbs; |
| 54 | struct usb_anchor data_urbs; |
Hans de Goede | 5930785 | 2014-09-15 16:04:12 +0200 | [diff] [blame] | 55 | unsigned long flags; |
Gerd Hoffmann | 023b515 | 2012-06-19 09:54:54 +0200 | [diff] [blame] | 56 | int qdepth, resetting; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 57 | unsigned cmd_pipe, status_pipe, data_in_pipe, data_out_pipe; |
| 58 | unsigned use_streams:1; |
| 59 | unsigned uas_sense_old:1; |
Hans de Goede | da65c2b | 2013-11-11 11:51:42 +0100 | [diff] [blame] | 60 | unsigned shutdown:1; |
Hans de Goede | 5e61aed | 2014-09-13 12:26:32 +0200 | [diff] [blame] | 61 | struct scsi_cmnd *cmnd[MAX_CMNDS]; |
Gerd Hoffmann | e064852 | 2012-09-25 10:47:08 +0200 | [diff] [blame] | 62 | spinlock_t lock; |
Gerd Hoffmann | 1bf8198 | 2013-09-13 13:27:12 +0200 | [diff] [blame] | 63 | struct work_struct work; |
Hans de Goede | 61c09ce | 2013-11-12 13:44:20 +0100 | [diff] [blame] | 64 | struct list_head inflight_list; |
Gerd Hoffmann | 326349f | 2013-09-13 13:27:13 +0200 | [diff] [blame] | 65 | struct list_head dead_list; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 66 | }; |
| 67 | |
| 68 | enum { |
Matthew Wilcox | 92a3f76 | 2010-12-15 15:44:04 -0500 | [diff] [blame] | 69 | SUBMIT_STATUS_URB = (1 << 1), |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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), |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 76 | COMMAND_INFLIGHT = (1 << 8), |
| 77 | DATA_IN_URB_INFLIGHT = (1 << 9), |
| 78 | DATA_OUT_URB_INFLIGHT = (1 << 10), |
| 79 | COMMAND_COMPLETED = (1 << 11), |
Gerd Hoffmann | ef018cc9 | 2012-09-25 10:47:06 +0200 | [diff] [blame] | 80 | COMMAND_ABORTED = (1 << 12), |
Hans de Goede | 60d9f67 | 2014-09-13 12:26:34 +0200 | [diff] [blame] | 81 | IS_IN_WORK_LIST = (1 << 13), |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 82 | }; |
| 83 | |
| 84 | /* Overrides scsi_pointer */ |
| 85 | struct uas_cmd_info { |
| 86 | unsigned int state; |
| 87 | unsigned int stream; |
| 88 | struct urb *cmd_urb; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 89 | struct urb *data_in_urb; |
| 90 | struct urb *data_out_urb; |
Hans de Goede | 040d1a8 | 2013-11-12 14:02:12 +0100 | [diff] [blame] | 91 | struct list_head list; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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); |
Sarah Sharp | ea9da1c | 2011-12-02 11:55:44 -0800 | [diff] [blame] | 97 | static void uas_do_work(struct work_struct *work); |
Gerd Hoffmann | 4c45697 | 2012-11-30 11:54:44 +0100 | [diff] [blame] | 98 | static int uas_try_complete(struct scsi_cmnd *cmnd, const char *caller); |
Gerd Hoffmann | d89bd83 | 2013-09-13 13:27:11 +0200 | [diff] [blame] | 99 | static void uas_free_streams(struct uas_dev_info *devinfo); |
Gerd Hoffmann | 326349f | 2013-09-13 13:27:13 +0200 | [diff] [blame] | 100 | static void uas_log_cmd_state(struct scsi_cmnd *cmnd, const char *caller); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 101 | |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 102 | static void uas_do_work(struct work_struct *work) |
| 103 | { |
Gerd Hoffmann | 1bf8198 | 2013-09-13 13:27:12 +0200 | [diff] [blame] | 104 | struct uas_dev_info *devinfo = |
| 105 | container_of(work, struct uas_dev_info, work); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 106 | struct uas_cmd_info *cmdinfo; |
Gerd Hoffmann | e064852 | 2012-09-25 10:47:08 +0200 | [diff] [blame] | 107 | unsigned long flags; |
Sarah Sharp | ea9da1c | 2011-12-02 11:55:44 -0800 | [diff] [blame] | 108 | int err; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 109 | |
Gerd Hoffmann | 1bf8198 | 2013-09-13 13:27:12 +0200 | [diff] [blame] | 110 | spin_lock_irqsave(&devinfo->lock, flags); |
Hans de Goede | b7b5d11 | 2014-09-13 12:26:30 +0200 | [diff] [blame] | 111 | |
| 112 | if (devinfo->resetting) |
| 113 | goto out; |
| 114 | |
Hans de Goede | 040d1a8 | 2013-11-12 14:02:12 +0100 | [diff] [blame] | 115 | list_for_each_entry(cmdinfo, &devinfo->inflight_list, list) { |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 116 | struct scsi_pointer *scp = (void *)cmdinfo; |
Gerd Hoffmann | 1bf8198 | 2013-09-13 13:27:12 +0200 | [diff] [blame] | 117 | struct scsi_cmnd *cmnd = container_of(scp, struct scsi_cmnd, |
| 118 | SCp); |
Hans de Goede | 61c09ce | 2013-11-12 13:44:20 +0100 | [diff] [blame] | 119 | |
| 120 | if (!(cmdinfo->state & IS_IN_WORK_LIST)) |
| 121 | continue; |
| 122 | |
Oliver Neukum | e7eda93 | 2014-03-28 11:10:30 +0100 | [diff] [blame] | 123 | err = uas_submit_urbs(cmnd, cmnd->device->hostdata, GFP_ATOMIC); |
Hans de Goede | 61c09ce | 2013-11-12 13:44:20 +0100 | [diff] [blame] | 124 | if (!err) |
Gerd Hoffmann | efefecf | 2012-11-30 11:54:42 +0100 | [diff] [blame] | 125 | cmdinfo->state &= ~IS_IN_WORK_LIST; |
Hans de Goede | 61c09ce | 2013-11-12 13:44:20 +0100 | [diff] [blame] | 126 | else |
Gerd Hoffmann | 1bf8198 | 2013-09-13 13:27:12 +0200 | [diff] [blame] | 127 | schedule_work(&devinfo->work); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 128 | } |
Hans de Goede | b7b5d11 | 2014-09-13 12:26:30 +0200 | [diff] [blame] | 129 | out: |
Gerd Hoffmann | 1bf8198 | 2013-09-13 13:27:12 +0200 | [diff] [blame] | 130 | spin_unlock_irqrestore(&devinfo->lock, flags); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 131 | } |
| 132 | |
Hans de Goede | da3033e | 2013-11-12 13:57:24 +0100 | [diff] [blame] | 133 | static void uas_mark_cmd_dead(struct uas_dev_info *devinfo, |
Hans de Goede | 673331c | 2013-11-14 14:27:27 +0100 | [diff] [blame] | 134 | struct uas_cmd_info *cmdinfo, |
| 135 | int result, const char *caller) |
Hans de Goede | da3033e | 2013-11-12 13:57:24 +0100 | [diff] [blame] | 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); |
Sanjeev Sharma | ab945ef | 2014-08-12 12:10:21 +0530 | [diff] [blame] | 141 | lockdep_assert_held(&devinfo->lock); |
Hans de Goede | da3033e | 2013-11-12 13:57:24 +0100 | [diff] [blame] | 142 | WARN_ON_ONCE(cmdinfo->state & COMMAND_ABORTED); |
| 143 | cmdinfo->state |= COMMAND_ABORTED; |
| 144 | cmdinfo->state &= ~IS_IN_WORK_LIST; |
Hans de Goede | 673331c | 2013-11-14 14:27:27 +0100 | [diff] [blame] | 145 | cmnd->result = result << 16; |
Hans de Goede | 040d1a8 | 2013-11-12 14:02:12 +0100 | [diff] [blame] | 146 | list_move_tail(&cmdinfo->list, &devinfo->dead_list); |
Hans de Goede | da3033e | 2013-11-12 13:57:24 +0100 | [diff] [blame] | 147 | } |
| 148 | |
Hans de Goede | 673331c | 2013-11-14 14:27:27 +0100 | [diff] [blame] | 149 | static void uas_abort_inflight(struct uas_dev_info *devinfo, int result, |
| 150 | const char *caller) |
Gerd Hoffmann | 4c45697 | 2012-11-30 11:54:44 +0100 | [diff] [blame] | 151 | { |
| 152 | struct uas_cmd_info *cmdinfo; |
| 153 | struct uas_cmd_info *temp; |
Gerd Hoffmann | 4c45697 | 2012-11-30 11:54:44 +0100 | [diff] [blame] | 154 | unsigned long flags; |
| 155 | |
Gerd Hoffmann | 4c45697 | 2012-11-30 11:54:44 +0100 | [diff] [blame] | 156 | spin_lock_irqsave(&devinfo->lock, flags); |
Hans de Goede | 040d1a8 | 2013-11-12 14:02:12 +0100 | [diff] [blame] | 157 | list_for_each_entry_safe(cmdinfo, temp, &devinfo->inflight_list, list) |
Hans de Goede | 673331c | 2013-11-14 14:27:27 +0100 | [diff] [blame] | 158 | uas_mark_cmd_dead(devinfo, cmdinfo, result, caller); |
Gerd Hoffmann | 4c45697 | 2012-11-30 11:54:44 +0100 | [diff] [blame] | 159 | spin_unlock_irqrestore(&devinfo->lock, flags); |
| 160 | } |
| 161 | |
Gerd Hoffmann | 1bf8198 | 2013-09-13 13:27:12 +0200 | [diff] [blame] | 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 | |
Sanjeev Sharma | ab945ef | 2014-08-12 12:10:21 +0530 | [diff] [blame] | 168 | lockdep_assert_held(&devinfo->lock); |
Gerd Hoffmann | 1bf8198 | 2013-09-13 13:27:12 +0200 | [diff] [blame] | 169 | cmdinfo->state |= IS_IN_WORK_LIST; |
| 170 | schedule_work(&devinfo->work); |
| 171 | } |
| 172 | |
Gerd Hoffmann | 326349f | 2013-09-13 13:27:13 +0200 | [diff] [blame] | 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); |
Hans de Goede | 040d1a8 | 2013-11-12 14:02:12 +0100 | [diff] [blame] | 180 | list_for_each_entry_safe(cmdinfo, temp, &devinfo->dead_list, list) { |
Gerd Hoffmann | 326349f | 2013-09-13 13:27:13 +0200 | [diff] [blame] | 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__); |
Gerd Hoffmann | f491ecb | 2013-09-13 13:27:14 +0200 | [diff] [blame] | 185 | WARN_ON_ONCE(!(cmdinfo->state & COMMAND_ABORTED)); |
Gerd Hoffmann | 326349f | 2013-09-13 13:27:13 +0200 | [diff] [blame] | 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 | |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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; |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 239 | } |
| 240 | |
Hans de Goede | e062000 | 2014-09-13 12:26:31 +0200 | [diff] [blame] | 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 | |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 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 | |
Hans de Goede | 60d9f67 | 2014-09-13 12:26:34 +0200 | [diff] [blame] | 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", |
Hans de Goede | e062000 | 2014-09-13 12:26:31 +0200 | [diff] [blame] | 263 | caller, cmnd, uas_get_tag(cmnd), |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 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" : "", |
Gerd Hoffmann | ef018cc9 | 2012-09-25 10:47:06 +0200 | [diff] [blame] | 274 | (ci->state & COMMAND_COMPLETED) ? " done" : "", |
Gerd Hoffmann | b06e48a | 2012-11-30 11:54:41 +0100 | [diff] [blame] | 275 | (ci->state & COMMAND_ABORTED) ? " abort" : "", |
Gerd Hoffmann | efefecf | 2012-11-30 11:54:42 +0100 | [diff] [blame] | 276 | (ci->state & IS_IN_WORK_LIST) ? " work" : ""); |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 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; |
Gerd Hoffmann | e064852 | 2012-09-25 10:47:08 +0200 | [diff] [blame] | 282 | struct uas_dev_info *devinfo = (void *)cmnd->device->hostdata; |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 283 | |
Sanjeev Sharma | ab945ef | 2014-08-12 12:10:21 +0530 | [diff] [blame] | 284 | lockdep_assert_held(&devinfo->lock); |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 285 | if (cmdinfo->state & (COMMAND_INFLIGHT | |
| 286 | DATA_IN_URB_INFLIGHT | |
Hans de Goede | 60d9f67 | 2014-09-13 12:26:34 +0200 | [diff] [blame] | 287 | DATA_OUT_URB_INFLIGHT)) |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 288 | return -EBUSY; |
Gerd Hoffmann | f491ecb | 2013-09-13 13:27:14 +0200 | [diff] [blame] | 289 | WARN_ON_ONCE(cmdinfo->state & COMMAND_COMPLETED); |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 290 | cmdinfo->state |= COMMAND_COMPLETED; |
Hans de Goede | 673331c | 2013-11-14 14:27:27 +0100 | [diff] [blame] | 291 | if (cmdinfo->state & COMMAND_ABORTED) |
Gerd Hoffmann | 0871d7d | 2012-09-25 10:47:07 +0200 | [diff] [blame] | 292 | scmd_printk(KERN_INFO, cmnd, "abort completed\n"); |
Hans de Goede | 040d1a8 | 2013-11-12 14:02:12 +0100 | [diff] [blame] | 293 | list_del(&cmdinfo->list); |
Hans de Goede | 5e61aed | 2014-09-13 12:26:32 +0200 | [diff] [blame] | 294 | devinfo->cmnd[uas_get_tag(cmnd) - 1] = NULL; |
Gerd Hoffmann | c621a81 | 2012-06-19 09:54:48 +0200 | [diff] [blame] | 295 | cmnd->scsi_done(cmnd); |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 296 | return 0; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 297 | } |
| 298 | |
| 299 | static void uas_xfer_data(struct urb *urb, struct scsi_cmnd *cmnd, |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 300 | unsigned direction) |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 301 | { |
| 302 | struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; |
| 303 | int err; |
| 304 | |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 305 | cmdinfo->state |= direction | SUBMIT_STATUS_URB; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 306 | err = uas_submit_urbs(cmnd, cmnd->device->hostdata, GFP_ATOMIC); |
| 307 | if (err) { |
Gerd Hoffmann | 1bf8198 | 2013-09-13 13:27:12 +0200 | [diff] [blame] | 308 | uas_add_work(cmdinfo); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 309 | } |
| 310 | } |
| 311 | |
| 312 | static void uas_stat_cmplt(struct urb *urb) |
| 313 | { |
| 314 | struct iu *iu = urb->transfer_buffer; |
Sebastian Andrzej Siewior | 22188f4 | 2011-12-19 20:22:39 +0100 | [diff] [blame] | 315 | struct Scsi_Host *shost = urb->context; |
Hans de Goede | 21fc05b | 2013-11-13 09:32:22 +0100 | [diff] [blame] | 316 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
Hans de Goede | 60d9f67 | 2014-09-13 12:26:34 +0200 | [diff] [blame] | 317 | struct urb *data_in_urb = NULL; |
| 318 | struct urb *data_out_urb = NULL; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 319 | struct scsi_cmnd *cmnd; |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 320 | struct uas_cmd_info *cmdinfo; |
Gerd Hoffmann | e064852 | 2012-09-25 10:47:08 +0200 | [diff] [blame] | 321 | unsigned long flags; |
Hans de Goede | 5e61aed | 2014-09-13 12:26:32 +0200 | [diff] [blame] | 322 | unsigned int idx; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 323 | |
Hans de Goede | b7b5d11 | 2014-09-13 12:26:30 +0200 | [diff] [blame] | 324 | spin_lock_irqsave(&devinfo->lock, flags); |
| 325 | |
| 326 | if (devinfo->resetting) |
| 327 | goto out; |
| 328 | |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 329 | if (urb->status) { |
Gerd Hoffmann | 326349f | 2013-09-13 13:27:13 +0200 | [diff] [blame] | 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 | } |
Hans de Goede | b7b5d11 | 2014-09-13 12:26:30 +0200 | [diff] [blame] | 337 | goto out; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 338 | } |
| 339 | |
Hans de Goede | 5e61aed | 2014-09-13 12:26:32 +0200 | [diff] [blame] | 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); |
Hans de Goede | b7b5d11 | 2014-09-13 12:26:30 +0200 | [diff] [blame] | 344 | goto out; |
Hans de Goede | 5e61aed | 2014-09-13 12:26:32 +0200 | [diff] [blame] | 345 | } |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 346 | |
Hans de Goede | 5e61aed | 2014-09-13 12:26:32 +0200 | [diff] [blame] | 347 | cmnd = devinfo->cmnd[idx]; |
Gerd Hoffmann | e0423de | 2012-09-26 10:29:03 +0200 | [diff] [blame] | 348 | cmdinfo = (void *)&cmnd->SCp; |
Hans de Goede | d89da03 | 2014-09-13 12:26:33 +0200 | [diff] [blame] | 349 | |
| 350 | if (!(cmdinfo->state & COMMAND_INFLIGHT)) { |
| 351 | scmd_printk(KERN_ERR, cmnd, "unexpected status cmplt\n"); |
| 352 | goto out; |
| 353 | } |
| 354 | |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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); |
Gerd Hoffmann | 8aac863 | 2012-06-19 09:54:52 +0200 | [diff] [blame] | 363 | if (cmnd->result != 0) { |
| 364 | /* cancel data transfers on error */ |
Hans de Goede | 60d9f67 | 2014-09-13 12:26:34 +0200 | [diff] [blame] | 365 | data_in_urb = usb_get_urb(cmdinfo->data_in_urb); |
| 366 | data_out_urb = usb_get_urb(cmdinfo->data_out_urb); |
Gerd Hoffmann | 8aac863 | 2012-06-19 09:54:52 +0200 | [diff] [blame] | 367 | } |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 368 | cmdinfo->state &= ~COMMAND_INFLIGHT; |
| 369 | uas_try_complete(cmnd, __func__); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 370 | break; |
| 371 | case IU_ID_READ_READY: |
Hans de Goede | 8e45315 | 2013-11-15 10:04:11 +0100 | [diff] [blame] | 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 | } |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 377 | uas_xfer_data(urb, cmnd, SUBMIT_DATA_IN_URB); |
| 378 | break; |
| 379 | case IU_ID_WRITE_READY: |
Hans de Goede | 8e45315 | 2013-11-15 10:04:11 +0100 | [diff] [blame] | 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 | } |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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 | } |
Hans de Goede | b7b5d11 | 2014-09-13 12:26:30 +0200 | [diff] [blame] | 391 | out: |
Gerd Hoffmann | e9bd7e1 | 2012-06-19 09:54:50 +0200 | [diff] [blame] | 392 | usb_free_urb(urb); |
Gerd Hoffmann | e064852 | 2012-09-25 10:47:08 +0200 | [diff] [blame] | 393 | spin_unlock_irqrestore(&devinfo->lock, flags); |
Hans de Goede | 60d9f67 | 2014-09-13 12:26:34 +0200 | [diff] [blame] | 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 | } |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 404 | } |
| 405 | |
Gerd Hoffmann | c621a81 | 2012-06-19 09:54:48 +0200 | [diff] [blame] | 406 | static void uas_data_cmplt(struct urb *urb) |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 407 | { |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 408 | struct scsi_cmnd *cmnd = urb->context; |
| 409 | struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; |
Gerd Hoffmann | e064852 | 2012-09-25 10:47:08 +0200 | [diff] [blame] | 410 | struct uas_dev_info *devinfo = (void *)cmnd->device->hostdata; |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 411 | struct scsi_data_buffer *sdb = NULL; |
Gerd Hoffmann | e064852 | 2012-09-25 10:47:08 +0200 | [diff] [blame] | 412 | unsigned long flags; |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 413 | |
Gerd Hoffmann | e064852 | 2012-09-25 10:47:08 +0200 | [diff] [blame] | 414 | spin_lock_irqsave(&devinfo->lock, flags); |
Hans de Goede | b7b5d11 | 2014-09-13 12:26:30 +0200 | [diff] [blame] | 415 | |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 416 | if (cmdinfo->data_in_urb == urb) { |
| 417 | sdb = scsi_in(cmnd); |
| 418 | cmdinfo->state &= ~DATA_IN_URB_INFLIGHT; |
Hans de Goede | 85fea82 | 2014-09-13 12:26:35 +0200 | [diff] [blame^] | 419 | cmdinfo->data_in_urb = NULL; |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 420 | } else if (cmdinfo->data_out_urb == urb) { |
| 421 | sdb = scsi_out(cmnd); |
| 422 | cmdinfo->state &= ~DATA_OUT_URB_INFLIGHT; |
Hans de Goede | 85fea82 | 2014-09-13 12:26:35 +0200 | [diff] [blame^] | 423 | cmdinfo->data_out_urb = NULL; |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 424 | } |
Gerd Hoffmann | f491ecb | 2013-09-13 13:27:14 +0200 | [diff] [blame] | 425 | if (sdb == NULL) { |
| 426 | WARN_ON_ONCE(1); |
Hans de Goede | b7b5d11 | 2014-09-13 12:26:30 +0200 | [diff] [blame] | 427 | goto out; |
| 428 | } |
| 429 | |
| 430 | if (devinfo->resetting) |
| 431 | goto out; |
| 432 | |
Hans de Goede | d89da03 | 2014-09-13 12:26:33 +0200 | [diff] [blame] | 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 | |
Hans de Goede | b7b5d11 | 2014-09-13 12:26:30 +0200 | [diff] [blame] | 439 | if (urb->status) { |
Hans de Goede | 876285c | 2013-11-07 08:52:42 +0100 | [diff] [blame] | 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 | } |
Gerd Hoffmann | 8aac863 | 2012-06-19 09:54:52 +0200 | [diff] [blame] | 446 | /* error: no data transfered */ |
| 447 | sdb->resid = sdb->length; |
| 448 | } else { |
| 449 | sdb->resid = sdb->length - urb->actual_length; |
| 450 | } |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 451 | uas_try_complete(cmnd, __func__); |
Hans de Goede | b7b5d11 | 2014-09-13 12:26:30 +0200 | [diff] [blame] | 452 | out: |
Hans de Goede | 85fea82 | 2014-09-13 12:26:35 +0200 | [diff] [blame^] | 453 | usb_free_urb(urb); |
Gerd Hoffmann | e064852 | 2012-09-25 10:47:08 +0200 | [diff] [blame] | 454 | spin_unlock_irqrestore(&devinfo->lock, flags); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 455 | } |
| 456 | |
Hans de Goede | 876285c | 2013-11-07 08:52:42 +0100 | [diff] [blame] | 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 | |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 468 | static struct urb *uas_alloc_data_urb(struct uas_dev_info *devinfo, gfp_t gfp, |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 469 | unsigned int pipe, u16 stream_id, |
| 470 | struct scsi_cmnd *cmnd, |
| 471 | enum dma_data_direction dir) |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 472 | { |
| 473 | struct usb_device *udev = devinfo->udev; |
| 474 | struct urb *urb = usb_alloc_urb(0, gfp); |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 475 | struct scsi_data_buffer *sdb = (dir == DMA_FROM_DEVICE) |
| 476 | ? scsi_in(cmnd) : scsi_out(cmnd); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 477 | |
| 478 | if (!urb) |
| 479 | goto out; |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 480 | usb_fill_bulk_urb(urb, udev, pipe, NULL, sdb->length, |
| 481 | uas_data_cmplt, cmnd); |
Hans de Goede | c6d4579 | 2013-11-12 10:53:57 +0100 | [diff] [blame] | 482 | urb->stream_id = stream_id; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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, |
Gerd Hoffmann | e9bd7e1 | 2012-06-19 09:54:50 +0200 | [diff] [blame] | 490 | struct Scsi_Host *shost, u16 stream_id) |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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 | |
Matthew Wilcox | ac563cf | 2010-12-15 15:44:03 -0500 | [diff] [blame] | 499 | iu = kzalloc(sizeof(*iu), gfp); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 500 | if (!iu) |
| 501 | goto free; |
| 502 | |
| 503 | usb_fill_bulk_urb(urb, udev, devinfo->status_pipe, iu, sizeof(*iu), |
Gerd Hoffmann | e9bd7e1 | 2012-06-19 09:54:50 +0200 | [diff] [blame] | 504 | uas_stat_cmplt, shost); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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, |
Hans de Goede | a887cd3 | 2013-10-17 19:47:28 +0200 | [diff] [blame] | 515 | struct scsi_cmnd *cmnd) |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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); |
Matthew Wilcox | ac563cf | 2010-12-15 15:44:03 -0500 | [diff] [blame] | 530 | iu = kzalloc(sizeof(*iu) + len, gfp); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 531 | if (!iu) |
| 532 | goto free; |
| 533 | |
| 534 | iu->iu_id = IU_ID_COMMAND; |
Hans de Goede | e062000 | 2014-09-13 12:26:31 +0200 | [diff] [blame] | 535 | iu->tag = cpu_to_be16(uas_get_tag(cmnd)); |
Christoph Hellwig | 02e031c | 2010-11-10 14:54:09 +0100 | [diff] [blame] | 536 | iu->prio_attr = UAS_SIMPLE_TAG; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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, |
Hans de Goede | 876285c | 2013-11-07 08:52:42 +0100 | [diff] [blame] | 542 | uas_cmd_cmplt, cmnd); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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 | |
Hans de Goede | 876285c | 2013-11-07 08:52:42 +0100 | [diff] [blame] | 557 | static struct urb *uas_submit_sense_urb(struct scsi_cmnd *cmnd, |
Hans de Goede | 70cf0fb | 2013-10-29 10:37:23 +0100 | [diff] [blame] | 558 | gfp_t gfp, unsigned int stream) |
Gerd Hoffmann | e9bd7e1 | 2012-06-19 09:54:50 +0200 | [diff] [blame] | 559 | { |
Hans de Goede | 876285c | 2013-11-07 08:52:42 +0100 | [diff] [blame] | 560 | struct Scsi_Host *shost = cmnd->device->host; |
Hans de Goede | 21fc05b | 2013-11-13 09:32:22 +0100 | [diff] [blame] | 561 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
Gerd Hoffmann | e9bd7e1 | 2012-06-19 09:54:50 +0200 | [diff] [blame] | 562 | struct urb *urb; |
Hans de Goede | 876285c | 2013-11-07 08:52:42 +0100 | [diff] [blame] | 563 | int err; |
Gerd Hoffmann | e9bd7e1 | 2012-06-19 09:54:50 +0200 | [diff] [blame] | 564 | |
| 565 | urb = uas_alloc_sense_urb(devinfo, gfp, shost, stream); |
| 566 | if (!urb) |
Hans de Goede | 70cf0fb | 2013-10-29 10:37:23 +0100 | [diff] [blame] | 567 | return NULL; |
Hans de Goede | d5f808d | 2013-10-17 19:30:26 +0200 | [diff] [blame] | 568 | usb_anchor_urb(urb, &devinfo->sense_urbs); |
Hans de Goede | 876285c | 2013-11-07 08:52:42 +0100 | [diff] [blame] | 569 | err = usb_submit_urb(urb, gfp); |
| 570 | if (err) { |
Hans de Goede | d5f808d | 2013-10-17 19:30:26 +0200 | [diff] [blame] | 571 | usb_unanchor_urb(urb); |
Hans de Goede | 876285c | 2013-11-07 08:52:42 +0100 | [diff] [blame] | 572 | uas_log_cmd_state(cmnd, __func__); |
Gerd Hoffmann | e9bd7e1 | 2012-06-19 09:54:50 +0200 | [diff] [blame] | 573 | shost_printk(KERN_INFO, shost, |
Hans de Goede | 876285c | 2013-11-07 08:52:42 +0100 | [diff] [blame] | 574 | "sense urb submission error %d stream %d\n", |
| 575 | err, stream); |
Gerd Hoffmann | e9bd7e1 | 2012-06-19 09:54:50 +0200 | [diff] [blame] | 576 | usb_free_urb(urb); |
Hans de Goede | 70cf0fb | 2013-10-29 10:37:23 +0100 | [diff] [blame] | 577 | return NULL; |
Gerd Hoffmann | e9bd7e1 | 2012-06-19 09:54:50 +0200 | [diff] [blame] | 578 | } |
Hans de Goede | 70cf0fb | 2013-10-29 10:37:23 +0100 | [diff] [blame] | 579 | return urb; |
Gerd Hoffmann | e9bd7e1 | 2012-06-19 09:54:50 +0200 | [diff] [blame] | 580 | } |
| 581 | |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 582 | static int uas_submit_urbs(struct scsi_cmnd *cmnd, |
Gerd Hoffmann | e9bd7e1 | 2012-06-19 09:54:50 +0200 | [diff] [blame] | 583 | struct uas_dev_info *devinfo, gfp_t gfp) |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 584 | { |
| 585 | struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; |
Hans de Goede | 70cf0fb | 2013-10-29 10:37:23 +0100 | [diff] [blame] | 586 | struct urb *urb; |
Hans de Goede | 876285c | 2013-11-07 08:52:42 +0100 | [diff] [blame] | 587 | int err; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 588 | |
Sanjeev Sharma | ab945ef | 2014-08-12 12:10:21 +0530 | [diff] [blame] | 589 | lockdep_assert_held(&devinfo->lock); |
Matthew Wilcox | 92a3f76 | 2010-12-15 15:44:04 -0500 | [diff] [blame] | 590 | if (cmdinfo->state & SUBMIT_STATUS_URB) { |
Hans de Goede | 876285c | 2013-11-07 08:52:42 +0100 | [diff] [blame] | 591 | urb = uas_submit_sense_urb(cmnd, gfp, cmdinfo->stream); |
Hans de Goede | 70cf0fb | 2013-10-29 10:37:23 +0100 | [diff] [blame] | 592 | if (!urb) |
| 593 | return SCSI_MLQUEUE_DEVICE_BUSY; |
Matthew Wilcox | 92a3f76 | 2010-12-15 15:44:04 -0500 | [diff] [blame] | 594 | cmdinfo->state &= ~SUBMIT_STATUS_URB; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 595 | } |
| 596 | |
| 597 | if (cmdinfo->state & ALLOC_DATA_IN_URB) { |
| 598 | cmdinfo->data_in_urb = uas_alloc_data_urb(devinfo, gfp, |
Gerd Hoffmann | c621a81 | 2012-06-19 09:54:48 +0200 | [diff] [blame] | 599 | devinfo->data_in_pipe, cmdinfo->stream, |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 600 | cmnd, DMA_FROM_DEVICE); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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) { |
Hans de Goede | d5f808d | 2013-10-17 19:30:26 +0200 | [diff] [blame] | 607 | usb_anchor_urb(cmdinfo->data_in_urb, &devinfo->data_urbs); |
Hans de Goede | 876285c | 2013-11-07 08:52:42 +0100 | [diff] [blame] | 608 | err = usb_submit_urb(cmdinfo->data_in_urb, gfp); |
| 609 | if (err) { |
Hans de Goede | d5f808d | 2013-10-17 19:30:26 +0200 | [diff] [blame] | 610 | usb_unanchor_urb(cmdinfo->data_in_urb); |
Hans de Goede | 876285c | 2013-11-07 08:52:42 +0100 | [diff] [blame] | 611 | uas_log_cmd_state(cmnd, __func__); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 612 | scmd_printk(KERN_INFO, cmnd, |
Hans de Goede | 876285c | 2013-11-07 08:52:42 +0100 | [diff] [blame] | 613 | "data in urb submission error %d stream %d\n", |
| 614 | err, cmdinfo->data_in_urb->stream_id); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 615 | return SCSI_MLQUEUE_DEVICE_BUSY; |
| 616 | } |
| 617 | cmdinfo->state &= ~SUBMIT_DATA_IN_URB; |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 618 | cmdinfo->state |= DATA_IN_URB_INFLIGHT; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 619 | } |
| 620 | |
| 621 | if (cmdinfo->state & ALLOC_DATA_OUT_URB) { |
| 622 | cmdinfo->data_out_urb = uas_alloc_data_urb(devinfo, gfp, |
Gerd Hoffmann | c621a81 | 2012-06-19 09:54:48 +0200 | [diff] [blame] | 623 | devinfo->data_out_pipe, cmdinfo->stream, |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 624 | cmnd, DMA_TO_DEVICE); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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) { |
Hans de Goede | d5f808d | 2013-10-17 19:30:26 +0200 | [diff] [blame] | 631 | usb_anchor_urb(cmdinfo->data_out_urb, &devinfo->data_urbs); |
Hans de Goede | 876285c | 2013-11-07 08:52:42 +0100 | [diff] [blame] | 632 | err = usb_submit_urb(cmdinfo->data_out_urb, gfp); |
| 633 | if (err) { |
Hans de Goede | d5f808d | 2013-10-17 19:30:26 +0200 | [diff] [blame] | 634 | usb_unanchor_urb(cmdinfo->data_out_urb); |
Hans de Goede | 876285c | 2013-11-07 08:52:42 +0100 | [diff] [blame] | 635 | uas_log_cmd_state(cmnd, __func__); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 636 | scmd_printk(KERN_INFO, cmnd, |
Hans de Goede | 876285c | 2013-11-07 08:52:42 +0100 | [diff] [blame] | 637 | "data out urb submission error %d stream %d\n", |
| 638 | err, cmdinfo->data_out_urb->stream_id); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 639 | return SCSI_MLQUEUE_DEVICE_BUSY; |
| 640 | } |
| 641 | cmdinfo->state &= ~SUBMIT_DATA_OUT_URB; |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 642 | cmdinfo->state |= DATA_OUT_URB_INFLIGHT; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 643 | } |
| 644 | |
| 645 | if (cmdinfo->state & ALLOC_CMD_URB) { |
Hans de Goede | a887cd3 | 2013-10-17 19:47:28 +0200 | [diff] [blame] | 646 | cmdinfo->cmd_urb = uas_alloc_cmd_urb(devinfo, gfp, cmnd); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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) { |
Hans de Goede | d5f808d | 2013-10-17 19:30:26 +0200 | [diff] [blame] | 653 | usb_anchor_urb(cmdinfo->cmd_urb, &devinfo->cmd_urbs); |
Hans de Goede | 876285c | 2013-11-07 08:52:42 +0100 | [diff] [blame] | 654 | err = usb_submit_urb(cmdinfo->cmd_urb, gfp); |
| 655 | if (err) { |
Hans de Goede | d5f808d | 2013-10-17 19:30:26 +0200 | [diff] [blame] | 656 | usb_unanchor_urb(cmdinfo->cmd_urb); |
Hans de Goede | 876285c | 2013-11-07 08:52:42 +0100 | [diff] [blame] | 657 | uas_log_cmd_state(cmnd, __func__); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 658 | scmd_printk(KERN_INFO, cmnd, |
Hans de Goede | 876285c | 2013-11-07 08:52:42 +0100 | [diff] [blame] | 659 | "cmd urb submission error %d\n", err); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 660 | return SCSI_MLQUEUE_DEVICE_BUSY; |
| 661 | } |
Gerd Hoffmann | a0e39e3 | 2012-09-25 10:47:04 +0200 | [diff] [blame] | 662 | cmdinfo->cmd_urb = NULL; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 663 | cmdinfo->state &= ~SUBMIT_CMD_URB; |
Gerd Hoffmann | b1d6769 | 2012-06-19 09:54:51 +0200 | [diff] [blame] | 664 | cmdinfo->state |= COMMAND_INFLIGHT; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 665 | } |
| 666 | |
| 667 | return 0; |
| 668 | } |
| 669 | |
Jeff Garzik | f281233 | 2010-11-16 02:10:29 -0500 | [diff] [blame] | 670 | static int uas_queuecommand_lck(struct scsi_cmnd *cmnd, |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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; |
Gerd Hoffmann | e064852 | 2012-09-25 10:47:08 +0200 | [diff] [blame] | 676 | unsigned long flags; |
Hans de Goede | 5e61aed | 2014-09-13 12:26:32 +0200 | [diff] [blame] | 677 | unsigned int stream; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 678 | int err; |
| 679 | |
| 680 | BUILD_BUG_ON(sizeof(struct uas_cmd_info) > sizeof(struct scsi_pointer)); |
| 681 | |
Hans de Goede | 5930785 | 2014-09-15 16:04:12 +0200 | [diff] [blame] | 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 | |
Hans de Goede | c6f6320 | 2013-11-13 09:24:15 +0100 | [diff] [blame] | 691 | spin_lock_irqsave(&devinfo->lock, flags); |
| 692 | |
Gerd Hoffmann | f8be6bf | 2012-11-30 11:54:45 +0100 | [diff] [blame] | 693 | if (devinfo->resetting) { |
| 694 | cmnd->result = DID_ERROR << 16; |
| 695 | cmnd->scsi_done(cmnd); |
Hans de Goede | c6f6320 | 2013-11-13 09:24:15 +0100 | [diff] [blame] | 696 | spin_unlock_irqrestore(&devinfo->lock, flags); |
Gerd Hoffmann | f8be6bf | 2012-11-30 11:54:45 +0100 | [diff] [blame] | 697 | return 0; |
| 698 | } |
| 699 | |
Hans de Goede | 5e61aed | 2014-09-13 12:26:32 +0200 | [diff] [blame] | 700 | stream = uas_get_tag(cmnd); |
| 701 | if (devinfo->cmnd[stream - 1]) { |
Gerd Hoffmann | e064852 | 2012-09-25 10:47:08 +0200 | [diff] [blame] | 702 | spin_unlock_irqrestore(&devinfo->lock, flags); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 703 | return SCSI_MLQUEUE_DEVICE_BUSY; |
Gerd Hoffmann | e064852 | 2012-09-25 10:47:08 +0200 | [diff] [blame] | 704 | } |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 705 | |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 706 | cmnd->scsi_done = done; |
| 707 | |
Hans de Goede | 5e61aed | 2014-09-13 12:26:32 +0200 | [diff] [blame] | 708 | memset(cmdinfo, 0, sizeof(*cmdinfo)); |
| 709 | cmdinfo->stream = stream; |
Hans de Goede | e062000 | 2014-09-13 12:26:31 +0200 | [diff] [blame] | 710 | cmdinfo->state = SUBMIT_STATUS_URB | ALLOC_CMD_URB | SUBMIT_CMD_URB; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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) { |
Gerd Hoffmann | db32de1 | 2012-06-19 09:54:49 +0200 | [diff] [blame] | 725 | cmdinfo->state &= ~(SUBMIT_DATA_IN_URB | SUBMIT_DATA_OUT_URB); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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 */ |
Matthew Wilcox | 92a3f76 | 2010-12-15 15:44:04 -0500 | [diff] [blame] | 732 | if (cmdinfo->state & SUBMIT_STATUS_URB) { |
Gerd Hoffmann | e064852 | 2012-09-25 10:47:08 +0200 | [diff] [blame] | 733 | spin_unlock_irqrestore(&devinfo->lock, flags); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 734 | return SCSI_MLQUEUE_DEVICE_BUSY; |
| 735 | } |
Gerd Hoffmann | 1bf8198 | 2013-09-13 13:27:12 +0200 | [diff] [blame] | 736 | uas_add_work(cmdinfo); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 737 | } |
| 738 | |
Hans de Goede | 5e61aed | 2014-09-13 12:26:32 +0200 | [diff] [blame] | 739 | devinfo->cmnd[stream - 1] = cmnd; |
Hans de Goede | 040d1a8 | 2013-11-12 14:02:12 +0100 | [diff] [blame] | 740 | list_add_tail(&cmdinfo->list, &devinfo->inflight_list); |
Gerd Hoffmann | e064852 | 2012-09-25 10:47:08 +0200 | [diff] [blame] | 741 | spin_unlock_irqrestore(&devinfo->lock, flags); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 742 | return 0; |
| 743 | } |
| 744 | |
Jeff Garzik | f281233 | 2010-11-16 02:10:29 -0500 | [diff] [blame] | 745 | static DEF_SCSI_QCMD(uas_queuecommand) |
| 746 | |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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; |
Hans de Goede | b7b5d11 | 2014-09-13 12:26:30 +0200 | [diff] [blame] | 752 | unsigned long flags; |
Gerd Hoffmann | 023b515 | 2012-06-19 09:54:54 +0200 | [diff] [blame] | 753 | int err; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 754 | |
Hans de Goede | be326f4 | 2013-09-22 16:27:02 +0200 | [diff] [blame] | 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 | |
Gerd Hoffmann | 326349f | 2013-09-13 13:27:13 +0200 | [diff] [blame] | 762 | shost_printk(KERN_INFO, sdev->host, "%s start\n", __func__); |
Hans de Goede | b7b5d11 | 2014-09-13 12:26:30 +0200 | [diff] [blame] | 763 | |
| 764 | spin_lock_irqsave(&devinfo->lock, flags); |
Gerd Hoffmann | 023b515 | 2012-06-19 09:54:54 +0200 | [diff] [blame] | 765 | devinfo->resetting = 1; |
Hans de Goede | b7b5d11 | 2014-09-13 12:26:30 +0200 | [diff] [blame] | 766 | spin_unlock_irqrestore(&devinfo->lock, flags); |
| 767 | |
Hans de Goede | 673331c | 2013-11-14 14:27:27 +0100 | [diff] [blame] | 768 | uas_abort_inflight(devinfo, DID_RESET, __func__); |
Gerd Hoffmann | a0e39e3 | 2012-09-25 10:47:04 +0200 | [diff] [blame] | 769 | usb_kill_anchored_urbs(&devinfo->cmd_urbs); |
Gerd Hoffmann | 023b515 | 2012-06-19 09:54:54 +0200 | [diff] [blame] | 770 | usb_kill_anchored_urbs(&devinfo->sense_urbs); |
| 771 | usb_kill_anchored_urbs(&devinfo->data_urbs); |
Gerd Hoffmann | 326349f | 2013-09-13 13:27:13 +0200 | [diff] [blame] | 772 | uas_zap_dead(devinfo); |
Gerd Hoffmann | 023b515 | 2012-06-19 09:54:54 +0200 | [diff] [blame] | 773 | err = usb_reset_device(udev); |
Hans de Goede | b7b5d11 | 2014-09-13 12:26:30 +0200 | [diff] [blame] | 774 | |
| 775 | spin_lock_irqsave(&devinfo->lock, flags); |
Gerd Hoffmann | 023b515 | 2012-06-19 09:54:54 +0200 | [diff] [blame] | 776 | devinfo->resetting = 0; |
Hans de Goede | b7b5d11 | 2014-09-13 12:26:30 +0200 | [diff] [blame] | 777 | spin_unlock_irqrestore(&devinfo->lock, flags); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 778 | |
Hans de Goede | be326f4 | 2013-09-22 16:27:02 +0200 | [diff] [blame] | 779 | usb_unlock_device(udev); |
| 780 | |
Gerd Hoffmann | 023b515 | 2012-06-19 09:54:54 +0200 | [diff] [blame] | 781 | if (err) { |
| 782 | shost_printk(KERN_INFO, sdev->host, "%s FAILED\n", __func__); |
| 783 | return FAILED; |
| 784 | } |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 785 | |
Gerd Hoffmann | 023b515 | 2012-06-19 09:54:54 +0200 | [diff] [blame] | 786 | shost_printk(KERN_INFO, sdev->host, "%s success\n", __func__); |
| 787 | return SUCCESS; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 788 | } |
| 789 | |
| 790 | static int uas_slave_alloc(struct scsi_device *sdev) |
| 791 | { |
Hans de Goede | 21fc05b | 2013-11-13 09:32:22 +0100 | [diff] [blame] | 792 | sdev->hostdata = (void *)sdev->host->hostdata; |
Hans de Goede | 37599f9 | 2013-11-15 10:04:31 +0100 | [diff] [blame] | 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 | |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 811 | return 0; |
| 812 | } |
| 813 | |
| 814 | static int uas_slave_configure(struct scsi_device *sdev) |
| 815 | { |
| 816 | struct uas_dev_info *devinfo = sdev->hostdata; |
Hans de Goede | 734016b | 2014-09-16 18:36:52 +0200 | [diff] [blame] | 817 | |
| 818 | if (devinfo->flags & US_FL_NO_REPORT_OPCODES) |
| 819 | sdev->no_report_opcodes = 1; |
| 820 | |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 821 | scsi_set_tag_type(sdev, MSG_ORDERED_TAG); |
Hans de Goede | d3f7c15 | 2013-10-23 17:46:17 +0100 | [diff] [blame] | 822 | scsi_activate_tcq(sdev, devinfo->qdepth - 2); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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, |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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 | |
Hans de Goede | 79b4c06 | 2013-10-25 17:04:33 +0100 | [diff] [blame] | 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 | |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 847 | static struct usb_device_id uas_usb_ids[] = { |
Hans de Goede | 79b4c06 | 2013-10-25 17:04:33 +0100 | [diff] [blame] | 848 | # include "unusual_uas.h" |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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 | |
Hans de Goede | 79b4c06 | 2013-10-25 17:04:33 +0100 | [diff] [blame] | 857 | #undef UNUSUAL_DEV |
| 858 | |
Hans de Goede | e1be067 | 2013-10-21 08:00:58 +0100 | [diff] [blame] | 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 | |
Hans de Goede | 58d5144 | 2013-10-29 10:23:26 +0100 | [diff] [blame] | 872 | static int uas_configure_endpoints(struct uas_dev_info *devinfo) |
Hans de Goede | 34f11e5 | 2013-10-29 08:54:48 +0100 | [diff] [blame] | 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; |
Hans de Goede | 34f11e5 | 2013-10-29 08:54:48 +0100 | [diff] [blame] | 879 | |
| 880 | r = uas_find_endpoints(devinfo->intf->cur_altsetting, eps); |
Hans de Goede | 74d71ae | 2013-10-29 10:10:36 +0100 | [diff] [blame] | 881 | if (r) |
| 882 | return r; |
Hans de Goede | 34f11e5 | 2013-10-29 08:54:48 +0100 | [diff] [blame] | 883 | |
Hans de Goede | 74d71ae | 2013-10-29 10:10:36 +0100 | [diff] [blame] | 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)); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 892 | |
Hans de Goede | 58d5144 | 2013-10-29 10:23:26 +0100 | [diff] [blame] | 893 | if (udev->speed != USB_SPEED_SUPER) { |
Hans de Goede | e2875c3 | 2014-08-01 17:33:08 +0200 | [diff] [blame] | 894 | devinfo->qdepth = 32; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 895 | devinfo->use_streams = 0; |
| 896 | } else { |
Hans de Goede | 58d5144 | 2013-10-29 10:23:26 +0100 | [diff] [blame] | 897 | devinfo->qdepth = usb_alloc_streams(devinfo->intf, eps + 1, |
Hans de Goede | 5e61aed | 2014-09-13 12:26:32 +0200 | [diff] [blame] | 898 | 3, MAX_CMNDS, GFP_NOIO); |
Hans de Goede | 58d5144 | 2013-10-29 10:23:26 +0100 | [diff] [blame] | 899 | if (devinfo->qdepth < 0) |
| 900 | return devinfo->qdepth; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 901 | devinfo->use_streams = 1; |
| 902 | } |
Hans de Goede | 58d5144 | 2013-10-29 10:23:26 +0100 | [diff] [blame] | 903 | |
| 904 | return 0; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 905 | } |
| 906 | |
Sebastian Andrzej Siewior | dae5154 | 2011-12-19 17:06:08 +0100 | [diff] [blame] | 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); |
Oliver Neukum | 94d72f0 | 2014-03-28 11:25:50 +0100 | [diff] [blame] | 915 | usb_free_streams(devinfo->intf, eps, 3, GFP_NOIO); |
Sebastian Andrzej Siewior | dae5154 | 2011-12-19 17:06:08 +0100 | [diff] [blame] | 916 | } |
| 917 | |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 918 | static int uas_probe(struct usb_interface *intf, const struct usb_device_id *id) |
| 919 | { |
Hans de Goede | 6ce8213 | 2013-10-17 19:00:45 +0200 | [diff] [blame] | 920 | int result = -ENOMEM; |
| 921 | struct Scsi_Host *shost = NULL; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 922 | struct uas_dev_info *devinfo; |
| 923 | struct usb_device *udev = interface_to_usbdev(intf); |
| 924 | |
Hans de Goede | 79b4c06 | 2013-10-25 17:04:33 +0100 | [diff] [blame] | 925 | if (!uas_use_uas_driver(intf, id)) |
| 926 | return -ENODEV; |
| 927 | |
Matthew Wilcox | 89dc290 | 2010-12-15 15:44:05 -0500 | [diff] [blame] | 928 | if (uas_switch_interface(udev, intf)) |
| 929 | return -ENODEV; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 930 | |
Hans de Goede | 21fc05b | 2013-11-13 09:32:22 +0100 | [diff] [blame] | 931 | shost = scsi_host_alloc(&uas_host_template, |
| 932 | sizeof(struct uas_dev_info)); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 933 | if (!shost) |
Hans de Goede | 6ce8213 | 2013-10-17 19:00:45 +0200 | [diff] [blame] | 934 | goto set_alt0; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 935 | |
| 936 | shost->max_cmd_len = 16 + 252; |
| 937 | shost->max_id = 1; |
Gerd Hoffmann | bde027b | 2013-01-25 15:03:36 +0100 | [diff] [blame] | 938 | shost->max_lun = 256; |
| 939 | shost->max_channel = 0; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 940 | shost->sg_tablesize = udev->bus->sg_tablesize; |
| 941 | |
Hans de Goede | 21fc05b | 2013-11-13 09:32:22 +0100 | [diff] [blame] | 942 | devinfo = (struct uas_dev_info *)shost->hostdata; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 943 | devinfo->intf = intf; |
| 944 | devinfo->udev = udev; |
Gerd Hoffmann | 023b515 | 2012-06-19 09:54:54 +0200 | [diff] [blame] | 945 | devinfo->resetting = 0; |
Hans de Goede | da65c2b | 2013-11-11 11:51:42 +0100 | [diff] [blame] | 946 | devinfo->shutdown = 0; |
Hans de Goede | 5930785 | 2014-09-15 16:04:12 +0200 | [diff] [blame] | 947 | devinfo->flags = id->driver_info; |
| 948 | usb_stor_adjust_quirks(udev, &devinfo->flags); |
Gerd Hoffmann | a0e39e3 | 2012-09-25 10:47:04 +0200 | [diff] [blame] | 949 | init_usb_anchor(&devinfo->cmd_urbs); |
Gerd Hoffmann | bdd000f | 2012-06-19 09:54:53 +0200 | [diff] [blame] | 950 | init_usb_anchor(&devinfo->sense_urbs); |
| 951 | init_usb_anchor(&devinfo->data_urbs); |
Gerd Hoffmann | e064852 | 2012-09-25 10:47:08 +0200 | [diff] [blame] | 952 | spin_lock_init(&devinfo->lock); |
Gerd Hoffmann | 1bf8198 | 2013-09-13 13:27:12 +0200 | [diff] [blame] | 953 | INIT_WORK(&devinfo->work, uas_do_work); |
Hans de Goede | 61c09ce | 2013-11-12 13:44:20 +0100 | [diff] [blame] | 954 | INIT_LIST_HEAD(&devinfo->inflight_list); |
Gerd Hoffmann | 326349f | 2013-09-13 13:27:13 +0200 | [diff] [blame] | 955 | INIT_LIST_HEAD(&devinfo->dead_list); |
Hans de Goede | 58d5144 | 2013-10-29 10:23:26 +0100 | [diff] [blame] | 956 | |
| 957 | result = uas_configure_endpoints(devinfo); |
| 958 | if (result) |
| 959 | goto set_alt0; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 960 | |
Hans de Goede | d3f7c15 | 2013-10-23 17:46:17 +0100 | [diff] [blame] | 961 | result = scsi_init_shared_tag_map(shost, devinfo->qdepth - 2); |
Sebastian Andrzej Siewior | dae5154 | 2011-12-19 17:06:08 +0100 | [diff] [blame] | 962 | if (result) |
Hans de Goede | 6ce8213 | 2013-10-17 19:00:45 +0200 | [diff] [blame] | 963 | goto free_streams; |
Sebastian Andrzej Siewior | dae5154 | 2011-12-19 17:06:08 +0100 | [diff] [blame] | 964 | |
Oliver Neukum | c637f1f | 2014-03-28 11:29:25 +0100 | [diff] [blame] | 965 | usb_set_intfdata(intf, shost); |
Sebastian Andrzej Siewior | dae5154 | 2011-12-19 17:06:08 +0100 | [diff] [blame] | 966 | result = scsi_add_host(shost, &intf->dev); |
| 967 | if (result) |
Hans de Goede | 6ce8213 | 2013-10-17 19:00:45 +0200 | [diff] [blame] | 968 | goto free_streams; |
Sebastian Andrzej Siewior | dae5154 | 2011-12-19 17:06:08 +0100 | [diff] [blame] | 969 | |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 970 | scsi_scan_host(shost); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 971 | return result; |
Sebastian Andrzej Siewior | dae5154 | 2011-12-19 17:06:08 +0100 | [diff] [blame] | 972 | |
Hans de Goede | 6ce8213 | 2013-10-17 19:00:45 +0200 | [diff] [blame] | 973 | free_streams: |
Sebastian Andrzej Siewior | dae5154 | 2011-12-19 17:06:08 +0100 | [diff] [blame] | 974 | uas_free_streams(devinfo); |
Oliver Neukum | c637f1f | 2014-03-28 11:29:25 +0100 | [diff] [blame] | 975 | usb_set_intfdata(intf, NULL); |
Hans de Goede | 6ce8213 | 2013-10-17 19:00:45 +0200 | [diff] [blame] | 976 | set_alt0: |
| 977 | usb_set_interface(udev, intf->altsetting[0].desc.bInterfaceNumber, 0); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 978 | if (shost) |
| 979 | scsi_host_put(shost); |
| 980 | return result; |
| 981 | } |
| 982 | |
| 983 | static int uas_pre_reset(struct usb_interface *intf) |
| 984 | { |
Hans de Goede | 4de7a373 | 2013-10-22 16:10:44 +0100 | [diff] [blame] | 985 | struct Scsi_Host *shost = usb_get_intfdata(intf); |
Hans de Goede | 21fc05b | 2013-11-13 09:32:22 +0100 | [diff] [blame] | 986 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
Hans de Goede | 4de7a373 | 2013-10-22 16:10:44 +0100 | [diff] [blame] | 987 | unsigned long flags; |
| 988 | |
Hans de Goede | da65c2b | 2013-11-11 11:51:42 +0100 | [diff] [blame] | 989 | if (devinfo->shutdown) |
| 990 | return 0; |
| 991 | |
Hans de Goede | 4de7a373 | 2013-10-22 16:10:44 +0100 | [diff] [blame] | 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 | |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 1006 | return 0; |
| 1007 | } |
| 1008 | |
| 1009 | static int uas_post_reset(struct usb_interface *intf) |
| 1010 | { |
Hans de Goede | 4de7a373 | 2013-10-22 16:10:44 +0100 | [diff] [blame] | 1011 | struct Scsi_Host *shost = usb_get_intfdata(intf); |
Hans de Goede | 21fc05b | 2013-11-13 09:32:22 +0100 | [diff] [blame] | 1012 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
Hans de Goede | 4de7a373 | 2013-10-22 16:10:44 +0100 | [diff] [blame] | 1013 | unsigned long flags; |
| 1014 | |
Hans de Goede | da65c2b | 2013-11-11 11:51:42 +0100 | [diff] [blame] | 1015 | if (devinfo->shutdown) |
| 1016 | return 0; |
| 1017 | |
Hans de Goede | 58d5144 | 2013-10-29 10:23:26 +0100 | [diff] [blame] | 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 | } |
Hans de Goede | 4de7a373 | 2013-10-22 16:10:44 +0100 | [diff] [blame] | 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 | |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 1030 | return 0; |
| 1031 | } |
| 1032 | |
Hans de Goede | 0df1f66 | 2013-11-07 08:47:05 +0100 | [diff] [blame] | 1033 | static int uas_suspend(struct usb_interface *intf, pm_message_t message) |
| 1034 | { |
| 1035 | struct Scsi_Host *shost = usb_get_intfdata(intf); |
Hans de Goede | 21fc05b | 2013-11-13 09:32:22 +0100 | [diff] [blame] | 1036 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
Hans de Goede | 0df1f66 | 2013-11-07 08:47:05 +0100 | [diff] [blame] | 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); |
Hans de Goede | 21fc05b | 2013-11-13 09:32:22 +0100 | [diff] [blame] | 1056 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
Hans de Goede | 0df1f66 | 2013-11-07 08:47:05 +0100 | [diff] [blame] | 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 | |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 1072 | static void uas_disconnect(struct usb_interface *intf) |
| 1073 | { |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 1074 | struct Scsi_Host *shost = usb_get_intfdata(intf); |
Hans de Goede | 21fc05b | 2013-11-13 09:32:22 +0100 | [diff] [blame] | 1075 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
Hans de Goede | b7b5d11 | 2014-09-13 12:26:30 +0200 | [diff] [blame] | 1076 | unsigned long flags; |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 1077 | |
Hans de Goede | b7b5d11 | 2014-09-13 12:26:30 +0200 | [diff] [blame] | 1078 | spin_lock_irqsave(&devinfo->lock, flags); |
Gerd Hoffmann | 4c45697 | 2012-11-30 11:54:44 +0100 | [diff] [blame] | 1079 | devinfo->resetting = 1; |
Hans de Goede | b7b5d11 | 2014-09-13 12:26:30 +0200 | [diff] [blame] | 1080 | spin_unlock_irqrestore(&devinfo->lock, flags); |
| 1081 | |
Gerd Hoffmann | 1bf8198 | 2013-09-13 13:27:12 +0200 | [diff] [blame] | 1082 | cancel_work_sync(&devinfo->work); |
Hans de Goede | 673331c | 2013-11-14 14:27:27 +0100 | [diff] [blame] | 1083 | uas_abort_inflight(devinfo, DID_NO_CONNECT, __func__); |
Gerd Hoffmann | a0e39e3 | 2012-09-25 10:47:04 +0200 | [diff] [blame] | 1084 | usb_kill_anchored_urbs(&devinfo->cmd_urbs); |
Gerd Hoffmann | bdd000f | 2012-06-19 09:54:53 +0200 | [diff] [blame] | 1085 | usb_kill_anchored_urbs(&devinfo->sense_urbs); |
| 1086 | usb_kill_anchored_urbs(&devinfo->data_urbs); |
Gerd Hoffmann | 326349f | 2013-09-13 13:27:13 +0200 | [diff] [blame] | 1087 | uas_zap_dead(devinfo); |
Gerd Hoffmann | 4c45697 | 2012-11-30 11:54:44 +0100 | [diff] [blame] | 1088 | scsi_remove_host(shost); |
Sebastian Andrzej Siewior | dae5154 | 2011-12-19 17:06:08 +0100 | [diff] [blame] | 1089 | uas_free_streams(devinfo); |
Hans de Goede | 21fc05b | 2013-11-13 09:32:22 +0100 | [diff] [blame] | 1090 | scsi_host_put(shost); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 1091 | } |
| 1092 | |
Hans de Goede | da65c2b | 2013-11-11 11:51:42 +0100 | [diff] [blame] | 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); |
Hans de Goede | 21fc05b | 2013-11-13 09:32:22 +0100 | [diff] [blame] | 1103 | struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata; |
Hans de Goede | da65c2b | 2013-11-11 11:51:42 +0100 | [diff] [blame] | 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 | |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 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, |
Hans de Goede | 0df1f66 | 2013-11-07 08:47:05 +0100 | [diff] [blame] | 1120 | .suspend = uas_suspend, |
| 1121 | .resume = uas_resume, |
| 1122 | .reset_resume = uas_reset_resume, |
Hans de Goede | da65c2b | 2013-11-11 11:51:42 +0100 | [diff] [blame] | 1123 | .drvwrap.driver.shutdown = uas_shutdown, |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 1124 | .id_table = uas_usb_ids, |
| 1125 | }; |
| 1126 | |
Greg Kroah-Hartman | 65db430 | 2011-11-18 09:34:02 -0800 | [diff] [blame] | 1127 | module_usb_driver(uas_driver); |
Matthew Wilcox | 115bb1f | 2010-10-07 13:05:23 +0200 | [diff] [blame] | 1128 | |
| 1129 | MODULE_LICENSE("GPL"); |
Hans de Goede | f50a496 | 2013-10-28 10:48:04 +0000 | [diff] [blame] | 1130 | MODULE_AUTHOR( |
| 1131 | "Hans de Goede <hdegoede@redhat.com>, Matthew Wilcox and Sarah Sharp"); |