Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Jeff Garzik | af36d7f | 2005-08-28 20:18:39 -0400 | [diff] [blame] | 2 | * libata-scsi.c - helper library for ATA |
| 3 | * |
| 4 | * Maintained by: Jeff Garzik <jgarzik@pobox.com> |
| 5 | * Please ALWAYS copy linux-ide@vger.kernel.org |
| 6 | * on emails. |
| 7 | * |
| 8 | * Copyright 2003-2004 Red Hat, Inc. All rights reserved. |
| 9 | * Copyright 2003-2004 Jeff Garzik |
| 10 | * |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of the GNU General Public License as published by |
| 14 | * the Free Software Foundation; either version 2, or (at your option) |
| 15 | * any later version. |
| 16 | * |
| 17 | * This program is distributed in the hope that it will be useful, |
| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | * GNU General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License |
| 23 | * along with this program; see the file COPYING. If not, write to |
| 24 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
| 25 | * |
| 26 | * |
| 27 | * libata documentation is available via 'make {ps|pdf}docs', |
| 28 | * as Documentation/DocBook/libata.* |
| 29 | * |
| 30 | * Hardware documentation available from |
| 31 | * - http://www.t10.org/ |
| 32 | * - http://www.t13.org/ |
| 33 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | */ |
| 35 | |
| 36 | #include <linux/kernel.h> |
| 37 | #include <linux/blkdev.h> |
| 38 | #include <linux/spinlock.h> |
| 39 | #include <scsi/scsi.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include <scsi/scsi_host.h> |
Christoph Hellwig | beb4048 | 2006-06-10 18:01:03 +0200 | [diff] [blame] | 41 | #include <scsi/scsi_cmnd.h> |
Mike Christie | 85837eb | 2005-11-11 16:38:53 -0600 | [diff] [blame] | 42 | #include <scsi/scsi_eh.h> |
Jeff Garzik | 005a5a0 | 2005-10-30 23:31:48 -0500 | [diff] [blame] | 43 | #include <scsi/scsi_device.h> |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 44 | #include <scsi/scsi_tcq.h> |
Tejun Heo | 30afc84 | 2006-03-18 18:40:14 +0900 | [diff] [blame] | 45 | #include <scsi/scsi_transport.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #include <linux/libata.h> |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 47 | #include <linux/hdreg.h> |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 48 | #include <linux/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
| 50 | #include "libata.h" |
| 51 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 52 | #define SECTOR_SIZE 512 |
| 53 | #define ATA_SCSI_RBUF_SIZE 4096 |
| 54 | |
| 55 | static DEFINE_SPINLOCK(ata_scsi_rbuf_lock); |
| 56 | static u8 ata_scsi_rbuf[ATA_SCSI_RBUF_SIZE]; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 57 | |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 58 | typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc); |
Tejun Heo | ab5b3a5 | 2006-05-31 18:27:34 +0900 | [diff] [blame] | 59 | |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 60 | static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap, |
Tejun Heo | ab5b3a5 | 2006-05-31 18:27:34 +0900 | [diff] [blame] | 61 | const struct scsi_device *scsidev); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 62 | static struct ata_device *ata_scsi_find_dev(struct ata_port *ap, |
Tejun Heo | ab5b3a5 | 2006-05-31 18:27:34 +0900 | [diff] [blame] | 63 | const struct scsi_device *scsidev); |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 64 | static int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel, |
| 65 | unsigned int id, unsigned int lun); |
Tejun Heo | ab5b3a5 | 2006-05-31 18:27:34 +0900 | [diff] [blame] | 66 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 68 | #define RW_RECOVERY_MPAGE 0x1 |
| 69 | #define RW_RECOVERY_MPAGE_LEN 12 |
| 70 | #define CACHE_MPAGE 0x8 |
| 71 | #define CACHE_MPAGE_LEN 20 |
| 72 | #define CONTROL_MPAGE 0xa |
| 73 | #define CONTROL_MPAGE_LEN 12 |
| 74 | #define ALL_MPAGES 0x3f |
| 75 | #define ALL_SUB_MPAGES 0xff |
| 76 | |
| 77 | |
Jeff Garzik | 24f7568 | 2007-09-21 07:54:49 -0400 | [diff] [blame] | 78 | static const u8 def_rw_recovery_mpage[RW_RECOVERY_MPAGE_LEN] = { |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 79 | RW_RECOVERY_MPAGE, |
| 80 | RW_RECOVERY_MPAGE_LEN - 2, |
Jeff Garzik | 24f7568 | 2007-09-21 07:54:49 -0400 | [diff] [blame] | 81 | (1 << 7), /* AWRE */ |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 82 | 0, /* read retry count */ |
| 83 | 0, 0, 0, 0, |
| 84 | 0, /* write retry count */ |
| 85 | 0, 0, 0 |
| 86 | }; |
| 87 | |
| 88 | static const u8 def_cache_mpage[CACHE_MPAGE_LEN] = { |
| 89 | CACHE_MPAGE, |
| 90 | CACHE_MPAGE_LEN - 2, |
| 91 | 0, /* contains WCE, needs to be 0 for logic */ |
| 92 | 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 93 | 0, /* contains DRA, needs to be 0 for logic */ |
| 94 | 0, 0, 0, 0, 0, 0, 0 |
| 95 | }; |
| 96 | |
| 97 | static const u8 def_control_mpage[CONTROL_MPAGE_LEN] = { |
| 98 | CONTROL_MPAGE, |
| 99 | CONTROL_MPAGE_LEN - 2, |
| 100 | 2, /* DSENSE=0, GLTSD=1 */ |
| 101 | 0, /* [QAM+QERR may be 1, see 05-359r1] */ |
| 102 | 0, 0, 0, 0, 0xff, 0xff, |
| 103 | 0, 30 /* extended self test time, see 05-359r1 */ |
| 104 | }; |
| 105 | |
Tejun Heo | 30afc84 | 2006-03-18 18:40:14 +0900 | [diff] [blame] | 106 | /* |
| 107 | * libata transport template. libata doesn't do real transport stuff. |
| 108 | * It just needs the eh_timed_out hook. |
| 109 | */ |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 110 | static struct scsi_transport_template ata_scsi_transport_template = { |
Christoph Hellwig | 9227c33 | 2006-04-01 19:21:04 +0200 | [diff] [blame] | 111 | .eh_strategy_handler = ata_scsi_error, |
Tejun Heo | 30afc84 | 2006-03-18 18:40:14 +0900 | [diff] [blame] | 112 | .eh_timed_out = ata_scsi_timed_out, |
Tejun Heo | ccf68c3 | 2006-05-31 18:28:09 +0900 | [diff] [blame] | 113 | .user_scan = ata_scsi_user_scan, |
Tejun Heo | 30afc84 | 2006-03-18 18:40:14 +0900 | [diff] [blame] | 114 | }; |
| 115 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 117 | static const struct { |
| 118 | enum link_pm value; |
| 119 | const char *name; |
| 120 | } link_pm_policy[] = { |
| 121 | { NOT_AVAILABLE, "max_performance" }, |
| 122 | { MIN_POWER, "min_power" }, |
| 123 | { MAX_PERFORMANCE, "max_performance" }, |
| 124 | { MEDIUM_POWER, "medium_power" }, |
| 125 | }; |
| 126 | |
Adrian Bunk | a2d6ed1 | 2007-10-31 00:50:23 +0100 | [diff] [blame] | 127 | static const char *ata_scsi_lpm_get(enum link_pm policy) |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 128 | { |
| 129 | int i; |
| 130 | |
| 131 | for (i = 0; i < ARRAY_SIZE(link_pm_policy); i++) |
| 132 | if (link_pm_policy[i].value == policy) |
| 133 | return link_pm_policy[i].name; |
| 134 | |
| 135 | return NULL; |
| 136 | } |
| 137 | |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 138 | static ssize_t ata_scsi_lpm_put(struct device *dev, |
| 139 | struct device_attribute *attr, |
| 140 | const char *buf, size_t count) |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 141 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 142 | struct Scsi_Host *shost = class_to_shost(dev); |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 143 | struct ata_port *ap = ata_shost_to_port(shost); |
| 144 | enum link_pm policy = 0; |
| 145 | int i; |
| 146 | |
| 147 | /* |
| 148 | * we are skipping array location 0 on purpose - this |
| 149 | * is because a value of NOT_AVAILABLE is displayed |
| 150 | * to the user as max_performance, but when the user |
| 151 | * writes "max_performance", they actually want the |
| 152 | * value to match MAX_PERFORMANCE. |
| 153 | */ |
| 154 | for (i = 1; i < ARRAY_SIZE(link_pm_policy); i++) { |
| 155 | const int len = strlen(link_pm_policy[i].name); |
| 156 | if (strncmp(link_pm_policy[i].name, buf, len) == 0 && |
| 157 | buf[len] == '\n') { |
| 158 | policy = link_pm_policy[i].value; |
| 159 | break; |
| 160 | } |
| 161 | } |
| 162 | if (!policy) |
| 163 | return -EINVAL; |
| 164 | |
| 165 | ata_lpm_schedule(ap, policy); |
| 166 | return count; |
| 167 | } |
| 168 | |
| 169 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 170 | ata_scsi_lpm_show(struct device *dev, struct device_attribute *attr, char *buf) |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 171 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 172 | struct Scsi_Host *shost = class_to_shost(dev); |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 173 | struct ata_port *ap = ata_shost_to_port(shost); |
| 174 | const char *policy = |
| 175 | ata_scsi_lpm_get(ap->pm_policy); |
| 176 | |
| 177 | if (!policy) |
| 178 | return -EINVAL; |
| 179 | |
| 180 | return snprintf(buf, 23, "%s\n", policy); |
| 181 | } |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 182 | DEVICE_ATTR(link_power_management_policy, S_IRUGO | S_IWUSR, |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 183 | ata_scsi_lpm_show, ata_scsi_lpm_put); |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 184 | EXPORT_SYMBOL_GPL(dev_attr_link_power_management_policy); |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 185 | |
Elias Oltmanns | 45fabbb | 2008-09-21 11:54:08 +0200 | [diff] [blame] | 186 | static ssize_t ata_scsi_park_show(struct device *device, |
| 187 | struct device_attribute *attr, char *buf) |
| 188 | { |
| 189 | struct scsi_device *sdev = to_scsi_device(device); |
| 190 | struct ata_port *ap; |
| 191 | struct ata_link *link; |
| 192 | struct ata_device *dev; |
Elias Oltmanns | a464189 | 2008-11-03 19:01:08 +0900 | [diff] [blame^] | 193 | unsigned long flags, now; |
Elias Oltmanns | 45fabbb | 2008-09-21 11:54:08 +0200 | [diff] [blame] | 194 | unsigned int uninitialized_var(msecs); |
| 195 | int rc = 0; |
| 196 | |
| 197 | ap = ata_shost_to_port(sdev->host); |
| 198 | |
| 199 | spin_lock_irqsave(ap->lock, flags); |
| 200 | dev = ata_scsi_find_dev(ap, sdev); |
| 201 | if (!dev) { |
| 202 | rc = -ENODEV; |
| 203 | goto unlock; |
| 204 | } |
| 205 | if (dev->flags & ATA_DFLAG_NO_UNLOAD) { |
| 206 | rc = -EOPNOTSUPP; |
| 207 | goto unlock; |
| 208 | } |
| 209 | |
| 210 | link = dev->link; |
Elias Oltmanns | a464189 | 2008-11-03 19:01:08 +0900 | [diff] [blame^] | 211 | now = jiffies; |
Elias Oltmanns | 45fabbb | 2008-09-21 11:54:08 +0200 | [diff] [blame] | 212 | if (ap->pflags & ATA_PFLAG_EH_IN_PROGRESS && |
| 213 | link->eh_context.unloaded_mask & (1 << dev->devno) && |
Elias Oltmanns | a464189 | 2008-11-03 19:01:08 +0900 | [diff] [blame^] | 214 | time_after(dev->unpark_deadline, now)) |
| 215 | msecs = jiffies_to_msecs(dev->unpark_deadline - now); |
Elias Oltmanns | 45fabbb | 2008-09-21 11:54:08 +0200 | [diff] [blame] | 216 | else |
| 217 | msecs = 0; |
| 218 | |
| 219 | unlock: |
| 220 | spin_unlock_irq(ap->lock); |
| 221 | |
| 222 | return rc ? rc : snprintf(buf, 20, "%u\n", msecs); |
| 223 | } |
| 224 | |
| 225 | static ssize_t ata_scsi_park_store(struct device *device, |
| 226 | struct device_attribute *attr, |
| 227 | const char *buf, size_t len) |
| 228 | { |
| 229 | struct scsi_device *sdev = to_scsi_device(device); |
| 230 | struct ata_port *ap; |
| 231 | struct ata_device *dev; |
| 232 | long int input; |
| 233 | unsigned long flags; |
| 234 | int rc; |
| 235 | |
| 236 | rc = strict_strtol(buf, 10, &input); |
| 237 | if (rc || input < -2) |
| 238 | return -EINVAL; |
| 239 | if (input > ATA_TMOUT_MAX_PARK) { |
| 240 | rc = -EOVERFLOW; |
| 241 | input = ATA_TMOUT_MAX_PARK; |
| 242 | } |
| 243 | |
| 244 | ap = ata_shost_to_port(sdev->host); |
| 245 | |
| 246 | spin_lock_irqsave(ap->lock, flags); |
| 247 | dev = ata_scsi_find_dev(ap, sdev); |
| 248 | if (unlikely(!dev)) { |
| 249 | rc = -ENODEV; |
| 250 | goto unlock; |
| 251 | } |
| 252 | if (dev->class != ATA_DEV_ATA) { |
| 253 | rc = -EOPNOTSUPP; |
| 254 | goto unlock; |
| 255 | } |
| 256 | |
| 257 | if (input >= 0) { |
| 258 | if (dev->flags & ATA_DFLAG_NO_UNLOAD) { |
| 259 | rc = -EOPNOTSUPP; |
| 260 | goto unlock; |
| 261 | } |
| 262 | |
| 263 | dev->unpark_deadline = ata_deadline(jiffies, input); |
| 264 | dev->link->eh_info.dev_action[dev->devno] |= ATA_EH_PARK; |
| 265 | ata_port_schedule_eh(ap); |
| 266 | complete(&ap->park_req_pending); |
| 267 | } else { |
| 268 | switch (input) { |
| 269 | case -1: |
| 270 | dev->flags &= ~ATA_DFLAG_NO_UNLOAD; |
| 271 | break; |
| 272 | case -2: |
| 273 | dev->flags |= ATA_DFLAG_NO_UNLOAD; |
| 274 | break; |
| 275 | } |
| 276 | } |
| 277 | unlock: |
| 278 | spin_unlock_irqrestore(ap->lock, flags); |
| 279 | |
| 280 | return rc ? rc : len; |
| 281 | } |
| 282 | DEVICE_ATTR(unload_heads, S_IRUGO | S_IWUSR, |
| 283 | ata_scsi_park_show, ata_scsi_park_store); |
| 284 | EXPORT_SYMBOL_GPL(dev_attr_unload_heads); |
| 285 | |
Tejun Heo | f0761be | 2008-04-28 17:16:52 +0900 | [diff] [blame] | 286 | static void ata_scsi_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq) |
| 287 | { |
| 288 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
| 289 | |
| 290 | scsi_build_sense_buffer(0, cmd->sense_buffer, sk, asc, ascq); |
| 291 | } |
| 292 | |
Kristen Carlson Accardi | 18f7ba4 | 2008-06-03 10:33:55 -0700 | [diff] [blame] | 293 | static ssize_t |
| 294 | ata_scsi_em_message_store(struct device *dev, struct device_attribute *attr, |
| 295 | const char *buf, size_t count) |
| 296 | { |
| 297 | struct Scsi_Host *shost = class_to_shost(dev); |
| 298 | struct ata_port *ap = ata_shost_to_port(shost); |
| 299 | if (ap->ops->em_store && (ap->flags & ATA_FLAG_EM)) |
| 300 | return ap->ops->em_store(ap, buf, count); |
| 301 | return -EINVAL; |
| 302 | } |
| 303 | |
| 304 | static ssize_t |
| 305 | ata_scsi_em_message_show(struct device *dev, struct device_attribute *attr, |
| 306 | char *buf) |
| 307 | { |
| 308 | struct Scsi_Host *shost = class_to_shost(dev); |
| 309 | struct ata_port *ap = ata_shost_to_port(shost); |
| 310 | |
| 311 | if (ap->ops->em_show && (ap->flags & ATA_FLAG_EM)) |
| 312 | return ap->ops->em_show(ap, buf); |
| 313 | return -EINVAL; |
| 314 | } |
| 315 | DEVICE_ATTR(em_message, S_IRUGO | S_IWUGO, |
| 316 | ata_scsi_em_message_show, ata_scsi_em_message_store); |
| 317 | EXPORT_SYMBOL_GPL(dev_attr_em_message); |
| 318 | |
| 319 | static ssize_t |
| 320 | ata_scsi_em_message_type_show(struct device *dev, struct device_attribute *attr, |
| 321 | char *buf) |
| 322 | { |
| 323 | struct Scsi_Host *shost = class_to_shost(dev); |
| 324 | struct ata_port *ap = ata_shost_to_port(shost); |
| 325 | |
| 326 | return snprintf(buf, 23, "%d\n", ap->em_message_type); |
| 327 | } |
| 328 | DEVICE_ATTR(em_message_type, S_IRUGO, |
| 329 | ata_scsi_em_message_type_show, NULL); |
| 330 | EXPORT_SYMBOL_GPL(dev_attr_em_message_type); |
| 331 | |
| 332 | static ssize_t |
| 333 | ata_scsi_activity_show(struct device *dev, struct device_attribute *attr, |
| 334 | char *buf) |
| 335 | { |
| 336 | struct scsi_device *sdev = to_scsi_device(dev); |
| 337 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
| 338 | struct ata_device *atadev = ata_scsi_find_dev(ap, sdev); |
| 339 | |
| 340 | if (ap->ops->sw_activity_show && (ap->flags & ATA_FLAG_SW_ACTIVITY)) |
| 341 | return ap->ops->sw_activity_show(atadev, buf); |
| 342 | return -EINVAL; |
| 343 | } |
| 344 | |
| 345 | static ssize_t |
| 346 | ata_scsi_activity_store(struct device *dev, struct device_attribute *attr, |
| 347 | const char *buf, size_t count) |
| 348 | { |
| 349 | struct scsi_device *sdev = to_scsi_device(dev); |
| 350 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
| 351 | struct ata_device *atadev = ata_scsi_find_dev(ap, sdev); |
| 352 | enum sw_activity val; |
| 353 | int rc; |
| 354 | |
| 355 | if (ap->ops->sw_activity_store && (ap->flags & ATA_FLAG_SW_ACTIVITY)) { |
| 356 | val = simple_strtoul(buf, NULL, 0); |
| 357 | switch (val) { |
| 358 | case OFF: case BLINK_ON: case BLINK_OFF: |
| 359 | rc = ap->ops->sw_activity_store(atadev, val); |
| 360 | if (!rc) |
| 361 | return count; |
| 362 | else |
| 363 | return rc; |
| 364 | } |
| 365 | } |
| 366 | return -EINVAL; |
| 367 | } |
| 368 | DEVICE_ATTR(sw_activity, S_IWUGO | S_IRUGO, ata_scsi_activity_show, |
| 369 | ata_scsi_activity_store); |
| 370 | EXPORT_SYMBOL_GPL(dev_attr_sw_activity); |
| 371 | |
Elias Oltmanns | 45fabbb | 2008-09-21 11:54:08 +0200 | [diff] [blame] | 372 | struct device_attribute *ata_common_sdev_attrs[] = { |
| 373 | &dev_attr_unload_heads, |
| 374 | NULL |
| 375 | }; |
| 376 | EXPORT_SYMBOL_GPL(ata_common_sdev_attrs); |
| 377 | |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 378 | static void ata_scsi_invalid_field(struct scsi_cmnd *cmd, |
| 379 | void (*done)(struct scsi_cmnd *)) |
| 380 | { |
| 381 | ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x24, 0x0); |
| 382 | /* "Invalid field in cbd" */ |
| 383 | done(cmd); |
| 384 | } |
| 385 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | /** |
| 387 | * ata_std_bios_param - generic bios head/sector/cylinder calculator used by sd. |
| 388 | * @sdev: SCSI device for which BIOS geometry is to be determined |
| 389 | * @bdev: block device associated with @sdev |
| 390 | * @capacity: capacity of SCSI device |
| 391 | * @geom: location to which geometry will be output |
| 392 | * |
| 393 | * Generic bios head/sector/cylinder calculator |
| 394 | * used by sd. Most BIOSes nowadays expect a XXX/255/16 (CHS) |
| 395 | * mapping. Some situations may arise where the disk is not |
| 396 | * bootable if this is not used. |
| 397 | * |
| 398 | * LOCKING: |
| 399 | * Defined by the SCSI layer. We don't really care. |
| 400 | * |
| 401 | * RETURNS: |
| 402 | * Zero. |
| 403 | */ |
| 404 | int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev, |
| 405 | sector_t capacity, int geom[]) |
| 406 | { |
| 407 | geom[0] = 255; |
| 408 | geom[1] = 63; |
| 409 | sector_div(capacity, 255*63); |
| 410 | geom[2] = capacity; |
| 411 | |
| 412 | return 0; |
| 413 | } |
| 414 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 415 | /** |
Tejun Heo | 5924b74 | 2007-01-02 20:20:07 +0900 | [diff] [blame] | 416 | * ata_get_identity - Handler for HDIO_GET_IDENTITY ioctl |
| 417 | * @sdev: SCSI device to get identify data for |
| 418 | * @arg: User buffer area for identify data |
| 419 | * |
| 420 | * LOCKING: |
| 421 | * Defined by the SCSI layer. We don't really care. |
| 422 | * |
| 423 | * RETURNS: |
| 424 | * Zero on success, negative errno on error. |
| 425 | */ |
| 426 | static int ata_get_identity(struct scsi_device *sdev, void __user *arg) |
| 427 | { |
| 428 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
| 429 | struct ata_device *dev = ata_scsi_find_dev(ap, sdev); |
| 430 | u16 __user *dst = arg; |
| 431 | char buf[40]; |
| 432 | |
| 433 | if (!dev) |
| 434 | return -ENOMSG; |
| 435 | |
| 436 | if (copy_to_user(dst, dev->id, ATA_ID_WORDS * sizeof(u16))) |
| 437 | return -EFAULT; |
| 438 | |
| 439 | ata_id_string(dev->id, buf, ATA_ID_PROD, ATA_ID_PROD_LEN); |
| 440 | if (copy_to_user(dst + ATA_ID_PROD, buf, ATA_ID_PROD_LEN)) |
| 441 | return -EFAULT; |
| 442 | |
| 443 | ata_id_string(dev->id, buf, ATA_ID_FW_REV, ATA_ID_FW_REV_LEN); |
| 444 | if (copy_to_user(dst + ATA_ID_FW_REV, buf, ATA_ID_FW_REV_LEN)) |
| 445 | return -EFAULT; |
| 446 | |
| 447 | ata_id_string(dev->id, buf, ATA_ID_SERNO, ATA_ID_SERNO_LEN); |
| 448 | if (copy_to_user(dst + ATA_ID_SERNO, buf, ATA_ID_SERNO_LEN)) |
| 449 | return -EFAULT; |
| 450 | |
| 451 | return 0; |
| 452 | } |
| 453 | |
| 454 | /** |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 455 | * ata_cmd_ioctl - Handler for HDIO_DRIVE_CMD ioctl |
Randy Dunlap | 8e8b77d | 2005-11-01 21:29:27 -0800 | [diff] [blame] | 456 | * @scsidev: Device to which we are issuing command |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 457 | * @arg: User provided data for issuing command |
| 458 | * |
| 459 | * LOCKING: |
| 460 | * Defined by the SCSI layer. We don't really care. |
| 461 | * |
| 462 | * RETURNS: |
| 463 | * Zero on success, negative errno on error. |
| 464 | */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 465 | int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg) |
| 466 | { |
| 467 | int rc = 0; |
| 468 | u8 scsi_cmd[MAX_COMMAND_SIZE]; |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 469 | u8 args[4], *argbuf = NULL, *sensebuf = NULL; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 470 | int argsize = 0; |
Mike Christie | 85837eb | 2005-11-11 16:38:53 -0600 | [diff] [blame] | 471 | enum dma_data_direction data_dir; |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 472 | int cmd_result; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 473 | |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 474 | if (arg == NULL) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 475 | return -EINVAL; |
| 476 | |
| 477 | if (copy_from_user(args, arg, sizeof(args))) |
| 478 | return -EFAULT; |
| 479 | |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 480 | sensebuf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO); |
| 481 | if (!sensebuf) |
| 482 | return -ENOMEM; |
| 483 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 484 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
| 485 | |
| 486 | if (args[3]) { |
| 487 | argsize = SECTOR_SIZE * args[3]; |
| 488 | argbuf = kmalloc(argsize, GFP_KERNEL); |
Jeff Raubitschek | 54dac83 | 2005-10-04 10:21:19 -0400 | [diff] [blame] | 489 | if (argbuf == NULL) { |
| 490 | rc = -ENOMEM; |
| 491 | goto error; |
| 492 | } |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 493 | |
| 494 | scsi_cmd[1] = (4 << 1); /* PIO Data-in */ |
| 495 | scsi_cmd[2] = 0x0e; /* no off.line or cc, read from dev, |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 496 | block count in sector count field */ |
Mike Christie | 85837eb | 2005-11-11 16:38:53 -0600 | [diff] [blame] | 497 | data_dir = DMA_FROM_DEVICE; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 498 | } else { |
| 499 | scsi_cmd[1] = (3 << 1); /* Non-data */ |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 500 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ |
Mike Christie | 85837eb | 2005-11-11 16:38:53 -0600 | [diff] [blame] | 501 | data_dir = DMA_NONE; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 502 | } |
| 503 | |
| 504 | scsi_cmd[0] = ATA_16; |
| 505 | |
| 506 | scsi_cmd[4] = args[2]; |
Bartlomiej Zolnierkiewicz | a4f1904 | 2008-10-10 22:39:20 +0200 | [diff] [blame] | 507 | if (args[0] == ATA_CMD_SMART) { /* hack -- ide driver does this too */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 508 | scsi_cmd[6] = args[3]; |
| 509 | scsi_cmd[8] = args[1]; |
| 510 | scsi_cmd[10] = 0x4f; |
| 511 | scsi_cmd[12] = 0xc2; |
| 512 | } else { |
| 513 | scsi_cmd[6] = args[1]; |
| 514 | } |
| 515 | scsi_cmd[14] = args[0]; |
| 516 | |
| 517 | /* Good values for timeout and retries? Values below |
| 518 | from scsi_ioctl_send_command() for default case... */ |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 519 | cmd_result = scsi_execute(scsidev, scsi_cmd, data_dir, argbuf, argsize, |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 520 | sensebuf, (10*HZ), 5, 0); |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 521 | |
| 522 | if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */ |
| 523 | u8 *desc = sensebuf + 8; |
| 524 | cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ |
| 525 | |
| 526 | /* If we set cc then ATA pass-through will cause a |
| 527 | * check condition even if no error. Filter that. */ |
| 528 | if (cmd_result & SAM_STAT_CHECK_CONDITION) { |
| 529 | struct scsi_sense_hdr sshdr; |
| 530 | scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE, |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 531 | &sshdr); |
| 532 | if (sshdr.sense_key == 0 && |
| 533 | sshdr.asc == 0 && sshdr.ascq == 0) |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 534 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; |
| 535 | } |
| 536 | |
| 537 | /* Send userspace a few ATA registers (same as drivers/ide) */ |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 538 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ |
| 539 | desc[0] == 0x09) { /* code is "ATA Descriptor" */ |
| 540 | args[0] = desc[13]; /* status */ |
| 541 | args[1] = desc[3]; /* error */ |
| 542 | args[2] = desc[5]; /* sector count (0:7) */ |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 543 | if (copy_to_user(arg, args, sizeof(args))) |
| 544 | rc = -EFAULT; |
| 545 | } |
| 546 | } |
| 547 | |
| 548 | |
| 549 | if (cmd_result) { |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 550 | rc = -EIO; |
| 551 | goto error; |
| 552 | } |
| 553 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 554 | if ((argbuf) |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 555 | && copy_to_user(arg + sizeof(args), argbuf, argsize)) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 556 | rc = -EFAULT; |
| 557 | error: |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 558 | kfree(sensebuf); |
Jesper Juhl | 8f76078 | 2006-06-27 02:55:06 -0700 | [diff] [blame] | 559 | kfree(argbuf); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 560 | return rc; |
| 561 | } |
| 562 | |
| 563 | /** |
| 564 | * ata_task_ioctl - Handler for HDIO_DRIVE_TASK ioctl |
Randy Dunlap | 8e8b77d | 2005-11-01 21:29:27 -0800 | [diff] [blame] | 565 | * @scsidev: Device to which we are issuing command |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 566 | * @arg: User provided data for issuing command |
| 567 | * |
| 568 | * LOCKING: |
| 569 | * Defined by the SCSI layer. We don't really care. |
| 570 | * |
| 571 | * RETURNS: |
| 572 | * Zero on success, negative errno on error. |
| 573 | */ |
| 574 | int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg) |
| 575 | { |
| 576 | int rc = 0; |
| 577 | u8 scsi_cmd[MAX_COMMAND_SIZE]; |
David Milburn | af068bd | 2007-01-30 00:59:15 -0800 | [diff] [blame] | 578 | u8 args[7], *sensebuf = NULL; |
| 579 | int cmd_result; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 580 | |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 581 | if (arg == NULL) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 582 | return -EINVAL; |
| 583 | |
| 584 | if (copy_from_user(args, arg, sizeof(args))) |
| 585 | return -EFAULT; |
| 586 | |
David Milburn | af068bd | 2007-01-30 00:59:15 -0800 | [diff] [blame] | 587 | sensebuf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO); |
| 588 | if (!sensebuf) |
| 589 | return -ENOMEM; |
| 590 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 591 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
| 592 | scsi_cmd[0] = ATA_16; |
| 593 | scsi_cmd[1] = (3 << 1); /* Non-data */ |
David Milburn | af068bd | 2007-01-30 00:59:15 -0800 | [diff] [blame] | 594 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 595 | scsi_cmd[4] = args[1]; |
| 596 | scsi_cmd[6] = args[2]; |
| 597 | scsi_cmd[8] = args[3]; |
| 598 | scsi_cmd[10] = args[4]; |
| 599 | scsi_cmd[12] = args[5]; |
Mark Lord | 277239f | 2007-03-30 17:45:52 -0400 | [diff] [blame] | 600 | scsi_cmd[13] = args[6] & 0x4f; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 601 | scsi_cmd[14] = args[0]; |
| 602 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 603 | /* Good values for timeout and retries? Values below |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 604 | from scsi_ioctl_send_command() for default case... */ |
David Milburn | af068bd | 2007-01-30 00:59:15 -0800 | [diff] [blame] | 605 | cmd_result = scsi_execute(scsidev, scsi_cmd, DMA_NONE, NULL, 0, |
| 606 | sensebuf, (10*HZ), 5, 0); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 607 | |
David Milburn | af068bd | 2007-01-30 00:59:15 -0800 | [diff] [blame] | 608 | if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */ |
| 609 | u8 *desc = sensebuf + 8; |
| 610 | cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ |
| 611 | |
| 612 | /* If we set cc then ATA pass-through will cause a |
| 613 | * check condition even if no error. Filter that. */ |
| 614 | if (cmd_result & SAM_STAT_CHECK_CONDITION) { |
| 615 | struct scsi_sense_hdr sshdr; |
| 616 | scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE, |
| 617 | &sshdr); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 618 | if (sshdr.sense_key == 0 && |
| 619 | sshdr.asc == 0 && sshdr.ascq == 0) |
David Milburn | af068bd | 2007-01-30 00:59:15 -0800 | [diff] [blame] | 620 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; |
| 621 | } |
| 622 | |
| 623 | /* Send userspace ATA registers */ |
| 624 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ |
| 625 | desc[0] == 0x09) {/* code is "ATA Descriptor" */ |
| 626 | args[0] = desc[13]; /* status */ |
| 627 | args[1] = desc[3]; /* error */ |
| 628 | args[2] = desc[5]; /* sector count (0:7) */ |
| 629 | args[3] = desc[7]; /* lbal */ |
| 630 | args[4] = desc[9]; /* lbam */ |
| 631 | args[5] = desc[11]; /* lbah */ |
| 632 | args[6] = desc[12]; /* select */ |
| 633 | if (copy_to_user(arg, args, sizeof(args))) |
| 634 | rc = -EFAULT; |
| 635 | } |
| 636 | } |
| 637 | |
| 638 | if (cmd_result) { |
| 639 | rc = -EIO; |
| 640 | goto error; |
| 641 | } |
| 642 | |
| 643 | error: |
| 644 | kfree(sensebuf); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 645 | return rc; |
| 646 | } |
| 647 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | int ata_scsi_ioctl(struct scsi_device *scsidev, int cmd, void __user *arg) |
| 649 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | int val = -EINVAL, rc = -EINVAL; |
| 651 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | switch (cmd) { |
| 653 | case ATA_IOC_GET_IO32: |
| 654 | val = 0; |
| 655 | if (copy_to_user(arg, &val, 1)) |
| 656 | return -EFAULT; |
| 657 | return 0; |
| 658 | |
| 659 | case ATA_IOC_SET_IO32: |
| 660 | val = (unsigned long) arg; |
| 661 | if (val != 0) |
| 662 | return -EINVAL; |
| 663 | return 0; |
| 664 | |
Tejun Heo | 5924b74 | 2007-01-02 20:20:07 +0900 | [diff] [blame] | 665 | case HDIO_GET_IDENTITY: |
| 666 | return ata_get_identity(scsidev, arg); |
| 667 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 668 | case HDIO_DRIVE_CMD: |
| 669 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
| 670 | return -EACCES; |
| 671 | return ata_cmd_ioctl(scsidev, arg); |
| 672 | |
| 673 | case HDIO_DRIVE_TASK: |
| 674 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
| 675 | return -EACCES; |
| 676 | return ata_task_ioctl(scsidev, arg); |
| 677 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | default: |
| 679 | rc = -ENOTTY; |
| 680 | break; |
| 681 | } |
| 682 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | return rc; |
| 684 | } |
| 685 | |
| 686 | /** |
| 687 | * ata_scsi_qc_new - acquire new ata_queued_cmd reference |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | * @dev: ATA device to which the new command is attached |
| 689 | * @cmd: SCSI command that originated this ATA command |
| 690 | * @done: SCSI command completion function |
| 691 | * |
| 692 | * Obtain a reference to an unused ata_queued_cmd structure, |
| 693 | * which is the basic libata structure representing a single |
| 694 | * ATA command sent to the hardware. |
| 695 | * |
| 696 | * If a command was available, fill in the SCSI-specific |
| 697 | * portions of the structure with information on the |
| 698 | * current command. |
| 699 | * |
| 700 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 701 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 702 | * |
| 703 | * RETURNS: |
| 704 | * Command allocated, or %NULL if none available. |
| 705 | */ |
Adrian Bunk | 7102d23 | 2007-01-04 00:09:36 +0100 | [diff] [blame] | 706 | static struct ata_queued_cmd *ata_scsi_qc_new(struct ata_device *dev, |
| 707 | struct scsi_cmnd *cmd, |
| 708 | void (*done)(struct scsi_cmnd *)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | { |
| 710 | struct ata_queued_cmd *qc; |
| 711 | |
Jens Axboe | e013e13 | 2008-10-24 09:22:42 +0200 | [diff] [blame] | 712 | if (cmd->request->tag != -1) |
| 713 | qc = ata_qc_new_init(dev, cmd->request->tag); |
| 714 | else |
| 715 | qc = ata_qc_new_init(dev, 0); |
| 716 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | if (qc) { |
| 718 | qc->scsicmd = cmd; |
| 719 | qc->scsidone = done; |
| 720 | |
Tejun Heo | ff2aeb1 | 2007-12-05 16:43:11 +0900 | [diff] [blame] | 721 | qc->sg = scsi_sglist(cmd); |
Boaz Harrosh | 7120165 | 2007-09-18 17:48:50 +0200 | [diff] [blame] | 722 | qc->n_elem = scsi_sg_count(cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | } else { |
| 724 | cmd->result = (DID_OK << 16) | (QUEUE_FULL << 1); |
| 725 | done(cmd); |
| 726 | } |
| 727 | |
| 728 | return qc; |
| 729 | } |
| 730 | |
Tejun Heo | aacda37 | 2008-03-18 17:47:43 +0900 | [diff] [blame] | 731 | static void ata_qc_set_pc_nbytes(struct ata_queued_cmd *qc) |
| 732 | { |
| 733 | struct scsi_cmnd *scmd = qc->scsicmd; |
| 734 | |
| 735 | qc->extrabytes = scmd->request->extra_len; |
| 736 | qc->nbytes = scsi_bufflen(scmd) + qc->extrabytes; |
| 737 | } |
| 738 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | /** |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 740 | * ata_dump_status - user friendly display of error info |
| 741 | * @id: id of the port in question |
| 742 | * @tf: ptr to filled out taskfile |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | * |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 744 | * Decode and dump the ATA error/status registers for the user so |
| 745 | * that they have some idea what really happened at the non |
| 746 | * make-believe layer. |
| 747 | * |
| 748 | * LOCKING: |
| 749 | * inherited from caller |
| 750 | */ |
Adrian Bunk | 7102d23 | 2007-01-04 00:09:36 +0100 | [diff] [blame] | 751 | static void ata_dump_status(unsigned id, struct ata_taskfile *tf) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 752 | { |
| 753 | u8 stat = tf->command, err = tf->feature; |
| 754 | |
| 755 | printk(KERN_WARNING "ata%u: status=0x%02x { ", id, stat); |
| 756 | if (stat & ATA_BUSY) { |
| 757 | printk("Busy }\n"); /* Data is not valid in this case */ |
| 758 | } else { |
| 759 | if (stat & 0x40) printk("DriveReady "); |
| 760 | if (stat & 0x20) printk("DeviceFault "); |
| 761 | if (stat & 0x10) printk("SeekComplete "); |
| 762 | if (stat & 0x08) printk("DataRequest "); |
| 763 | if (stat & 0x04) printk("CorrectedError "); |
| 764 | if (stat & 0x02) printk("Index "); |
| 765 | if (stat & 0x01) printk("Error "); |
| 766 | printk("}\n"); |
| 767 | |
| 768 | if (err) { |
| 769 | printk(KERN_WARNING "ata%u: error=0x%02x { ", id, err); |
| 770 | if (err & 0x04) printk("DriveStatusError "); |
| 771 | if (err & 0x80) { |
| 772 | if (err & 0x04) printk("BadCRC "); |
| 773 | else printk("Sector "); |
| 774 | } |
| 775 | if (err & 0x40) printk("UncorrectableError "); |
| 776 | if (err & 0x10) printk("SectorIdNotFound "); |
| 777 | if (err & 0x02) printk("TrackZeroNotFound "); |
| 778 | if (err & 0x01) printk("AddrMarkNotFound "); |
| 779 | printk("}\n"); |
| 780 | } |
| 781 | } |
| 782 | } |
| 783 | |
| 784 | /** |
| 785 | * ata_to_sense_error - convert ATA error to SCSI error |
Randy Dunlap | 8e8b77d | 2005-11-01 21:29:27 -0800 | [diff] [blame] | 786 | * @id: ATA device number |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 787 | * @drv_stat: value contained in ATA status register |
| 788 | * @drv_err: value contained in ATA error register |
| 789 | * @sk: the sense key we'll fill out |
| 790 | * @asc: the additional sense code we'll fill out |
| 791 | * @ascq: the additional sense code qualifier we'll fill out |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 792 | * @verbose: be verbose |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 793 | * |
| 794 | * Converts an ATA error into a SCSI error. Fill out pointers to |
| 795 | * SK, ASC, and ASCQ bytes for later use in fixed or descriptor |
| 796 | * format sense blocks. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | * |
| 798 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 799 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | */ |
Adrian Bunk | 7102d23 | 2007-01-04 00:09:36 +0100 | [diff] [blame] | 801 | static void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, |
| 802 | u8 *asc, u8 *ascq, int verbose) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | { |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 804 | int i; |
Jeff Garzik | ffe75ef | 2005-10-09 10:40:44 -0400 | [diff] [blame] | 805 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | /* Based on the 3ware driver translation table */ |
Arjan van de Ven | 98ac62d | 2005-11-28 10:06:23 +0100 | [diff] [blame] | 807 | static const unsigned char sense_table[][4] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | /* BBD|ECC|ID|MAR */ |
| 809 | {0xd1, ABORTED_COMMAND, 0x00, 0x00}, // Device busy Aborted command |
| 810 | /* BBD|ECC|ID */ |
| 811 | {0xd0, ABORTED_COMMAND, 0x00, 0x00}, // Device busy Aborted command |
| 812 | /* ECC|MC|MARK */ |
| 813 | {0x61, HARDWARE_ERROR, 0x00, 0x00}, // Device fault Hardware error |
| 814 | /* ICRC|ABRT */ /* NB: ICRC & !ABRT is BBD */ |
| 815 | {0x84, ABORTED_COMMAND, 0x47, 0x00}, // Data CRC error SCSI parity error |
| 816 | /* MC|ID|ABRT|TRK0|MARK */ |
| 817 | {0x37, NOT_READY, 0x04, 0x00}, // Unit offline Not ready |
| 818 | /* MCR|MARK */ |
| 819 | {0x09, NOT_READY, 0x04, 0x00}, // Unrecovered disk error Not ready |
| 820 | /* Bad address mark */ |
| 821 | {0x01, MEDIUM_ERROR, 0x13, 0x00}, // Address mark not found Address mark not found for data field |
| 822 | /* TRK0 */ |
| 823 | {0x02, HARDWARE_ERROR, 0x00, 0x00}, // Track 0 not found Hardware error |
| 824 | /* Abort & !ICRC */ |
| 825 | {0x04, ABORTED_COMMAND, 0x00, 0x00}, // Aborted command Aborted command |
| 826 | /* Media change request */ |
| 827 | {0x08, NOT_READY, 0x04, 0x00}, // Media change request FIXME: faking offline |
| 828 | /* SRV */ |
| 829 | {0x10, ABORTED_COMMAND, 0x14, 0x00}, // ID not found Recorded entity not found |
| 830 | /* Media change */ |
| 831 | {0x08, NOT_READY, 0x04, 0x00}, // Media change FIXME: faking offline |
| 832 | /* ECC */ |
| 833 | {0x40, MEDIUM_ERROR, 0x11, 0x04}, // Uncorrectable ECC error Unrecovered read error |
| 834 | /* BBD - block marked bad */ |
| 835 | {0x80, MEDIUM_ERROR, 0x11, 0x04}, // Block marked bad Medium error, unrecovered read error |
| 836 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
| 837 | }; |
Arjan van de Ven | 98ac62d | 2005-11-28 10:06:23 +0100 | [diff] [blame] | 838 | static const unsigned char stat_table[][4] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | /* Must be first because BUSY means no other bits valid */ |
| 840 | {0x80, ABORTED_COMMAND, 0x47, 0x00}, // Busy, fake parity for now |
| 841 | {0x20, HARDWARE_ERROR, 0x00, 0x00}, // Device fault |
| 842 | {0x08, ABORTED_COMMAND, 0x47, 0x00}, // Timed out in xfer, fake parity for now |
| 843 | {0x04, RECOVERED_ERROR, 0x11, 0x00}, // Recovered ECC error Medium error, recovered |
| 844 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
| 845 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | /* |
| 848 | * Is this an error we can process/parse |
| 849 | */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 850 | if (drv_stat & ATA_BUSY) { |
| 851 | drv_err = 0; /* Ignore the err bits, they're invalid */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 854 | if (drv_err) { |
| 855 | /* Look for drv_err */ |
| 856 | for (i = 0; sense_table[i][0] != 0xFF; i++) { |
| 857 | /* Look for best matches first */ |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 858 | if ((sense_table[i][0] & drv_err) == |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 859 | sense_table[i][0]) { |
| 860 | *sk = sense_table[i][1]; |
| 861 | *asc = sense_table[i][2]; |
| 862 | *ascq = sense_table[i][3]; |
| 863 | goto translate_done; |
| 864 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 865 | } |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 866 | /* No immediate match */ |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 867 | if (verbose) |
| 868 | printk(KERN_WARNING "ata%u: no sense translation for " |
| 869 | "error 0x%02x\n", id, drv_err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | } |
| 871 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | /* Fall back to interpreting status bits */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 873 | for (i = 0; stat_table[i][0] != 0xFF; i++) { |
| 874 | if (stat_table[i][0] & drv_stat) { |
| 875 | *sk = stat_table[i][1]; |
| 876 | *asc = stat_table[i][2]; |
| 877 | *ascq = stat_table[i][3]; |
| 878 | goto translate_done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | } |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 881 | /* No error? Undecoded? */ |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 882 | if (verbose) |
| 883 | printk(KERN_WARNING "ata%u: no sense translation for " |
| 884 | "status: 0x%02x\n", id, drv_stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | |
Alan Cox | 2d20202 | 2006-03-21 15:53:46 +0000 | [diff] [blame] | 886 | /* We need a sensible error return here, which is tricky, and one |
| 887 | that won't cause people to do things like return a disk wrongly */ |
| 888 | *sk = ABORTED_COMMAND; |
| 889 | *asc = 0x00; |
| 890 | *ascq = 0x00; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 891 | |
| 892 | translate_done: |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 893 | if (verbose) |
| 894 | printk(KERN_ERR "ata%u: translated ATA stat/err 0x%02x/%02x " |
| 895 | "to SCSI SK/ASC/ASCQ 0x%x/%02x/%02x\n", |
| 896 | id, drv_stat, drv_err, *sk, *asc, *ascq); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 897 | return; |
| 898 | } |
| 899 | |
| 900 | /* |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 901 | * ata_gen_passthru_sense - Generate check condition sense block. |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 902 | * @qc: Command that completed. |
| 903 | * |
| 904 | * This function is specific to the ATA descriptor format sense |
| 905 | * block specified for the ATA pass through commands. Regardless |
| 906 | * of whether the command errored or not, return a sense |
| 907 | * block. Copy all controller registers into the sense |
| 908 | * block. Clear sense key, ASC & ASCQ if there is no error. |
| 909 | * |
| 910 | * LOCKING: |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 911 | * None. |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 912 | */ |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 913 | static void ata_gen_passthru_sense(struct ata_queued_cmd *qc) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 914 | { |
| 915 | struct scsi_cmnd *cmd = qc->scsicmd; |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 916 | struct ata_taskfile *tf = &qc->result_tf; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 917 | unsigned char *sb = cmd->sense_buffer; |
| 918 | unsigned char *desc = sb + 8; |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 919 | int verbose = qc->ap->ops->error_handler == NULL; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 920 | |
| 921 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); |
| 922 | |
Jeff Garzik | 0e5dec4 | 2005-10-06 09:40:20 -0400 | [diff] [blame] | 923 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 924 | |
| 925 | /* |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 926 | * Use ata_to_sense_error() to map status register bits |
| 927 | * onto sense key, asc & ascq. |
| 928 | */ |
Tejun Heo | 058e55e | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 929 | if (qc->err_mask || |
| 930 | tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 931 | ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature, |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 932 | &sb[1], &sb[2], &sb[3], verbose); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 933 | sb[1] &= 0x0f; |
| 934 | } |
| 935 | |
| 936 | /* |
| 937 | * Sense data is current and format is descriptor. |
| 938 | */ |
| 939 | sb[0] = 0x72; |
| 940 | |
| 941 | desc[0] = 0x09; |
| 942 | |
Tejun Heo | f38621b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 943 | /* set length of additional sense data */ |
| 944 | sb[7] = 14; |
| 945 | desc[1] = 12; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 946 | |
| 947 | /* |
| 948 | * Copy registers into sense buffer. |
| 949 | */ |
| 950 | desc[2] = 0x00; |
| 951 | desc[3] = tf->feature; /* == error reg */ |
| 952 | desc[5] = tf->nsect; |
| 953 | desc[7] = tf->lbal; |
| 954 | desc[9] = tf->lbam; |
| 955 | desc[11] = tf->lbah; |
| 956 | desc[12] = tf->device; |
| 957 | desc[13] = tf->command; /* == status reg */ |
| 958 | |
| 959 | /* |
| 960 | * Fill in Extend bit, and the high order bytes |
| 961 | * if applicable. |
| 962 | */ |
| 963 | if (tf->flags & ATA_TFLAG_LBA48) { |
| 964 | desc[2] |= 0x01; |
| 965 | desc[4] = tf->hob_nsect; |
| 966 | desc[6] = tf->hob_lbal; |
| 967 | desc[8] = tf->hob_lbam; |
| 968 | desc[10] = tf->hob_lbah; |
| 969 | } |
| 970 | } |
| 971 | |
| 972 | /** |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 973 | * ata_gen_ata_sense - generate a SCSI fixed sense block |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 974 | * @qc: Command that we are erroring out |
| 975 | * |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 976 | * Generate sense block for a failed ATA command @qc. Descriptor |
| 977 | * format is used to accomodate LBA48 block address. |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 978 | * |
| 979 | * LOCKING: |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 980 | * None. |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 981 | */ |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 982 | static void ata_gen_ata_sense(struct ata_queued_cmd *qc) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 983 | { |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 984 | struct ata_device *dev = qc->dev; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 985 | struct scsi_cmnd *cmd = qc->scsicmd; |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 986 | struct ata_taskfile *tf = &qc->result_tf; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 987 | unsigned char *sb = cmd->sense_buffer; |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 988 | unsigned char *desc = sb + 8; |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 989 | int verbose = qc->ap->ops->error_handler == NULL; |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 990 | u64 block; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 991 | |
| 992 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); |
| 993 | |
Jeff Garzik | 0e5dec4 | 2005-10-06 09:40:20 -0400 | [diff] [blame] | 994 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 995 | |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 996 | /* sense data is current and format is descriptor */ |
| 997 | sb[0] = 0x72; |
| 998 | |
| 999 | /* Use ata_to_sense_error() to map status register bits |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1000 | * onto sense key, asc & ascq. |
| 1001 | */ |
Tejun Heo | 058e55e | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 1002 | if (qc->err_mask || |
| 1003 | tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 1004 | ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature, |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 1005 | &sb[1], &sb[2], &sb[3], verbose); |
| 1006 | sb[1] &= 0x0f; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1007 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1008 | |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 1009 | block = ata_tf_read_block(&qc->result_tf, dev); |
Jeff Garzik | 0274aa2 | 2005-06-22 13:50:56 -0400 | [diff] [blame] | 1010 | |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 1011 | /* information sense data descriptor */ |
| 1012 | sb[7] = 12; |
| 1013 | desc[0] = 0x00; |
| 1014 | desc[1] = 10; |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 1015 | |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 1016 | desc[2] |= 0x80; /* valid */ |
| 1017 | desc[6] = block >> 40; |
| 1018 | desc[7] = block >> 32; |
| 1019 | desc[8] = block >> 24; |
| 1020 | desc[9] = block >> 16; |
| 1021 | desc[10] = block >> 8; |
| 1022 | desc[11] = block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1023 | } |
| 1024 | |
Brian King | a6cce2a | 2006-03-17 17:04:15 -0600 | [diff] [blame] | 1025 | static void ata_scsi_sdev_config(struct scsi_device *sdev) |
| 1026 | { |
| 1027 | sdev->use_10_for_rw = 1; |
| 1028 | sdev->use_10_for_ms = 1; |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1029 | |
| 1030 | /* Schedule policy is determined by ->qc_defer() callback and |
| 1031 | * it needs to see every deferred qc. Set dev_blocked to 1 to |
| 1032 | * prevent SCSI midlayer from automatically deferring |
| 1033 | * requests. |
| 1034 | */ |
| 1035 | sdev->max_device_blocked = 1; |
Brian King | a6cce2a | 2006-03-17 17:04:15 -0600 | [diff] [blame] | 1036 | } |
| 1037 | |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1038 | /** |
| 1039 | * atapi_drain_needed - Check whether data transfer may overflow |
Randy Dunlap | 73fd8b6 | 2008-02-19 13:43:21 -0800 | [diff] [blame] | 1040 | * @rq: request to be checked |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1041 | * |
| 1042 | * ATAPI commands which transfer variable length data to host |
| 1043 | * might overflow due to application error or hardare bug. This |
| 1044 | * function checks whether overflow should be drained and ignored |
| 1045 | * for @request. |
| 1046 | * |
| 1047 | * LOCKING: |
| 1048 | * None. |
| 1049 | * |
| 1050 | * RETURNS: |
| 1051 | * 1 if ; otherwise, 0. |
| 1052 | */ |
| 1053 | static int atapi_drain_needed(struct request *rq) |
| 1054 | { |
| 1055 | if (likely(!blk_pc_request(rq))) |
| 1056 | return 0; |
| 1057 | |
| 1058 | if (!rq->data_len || (rq->cmd_flags & REQ_RW)) |
| 1059 | return 0; |
| 1060 | |
| 1061 | return atapi_cmd_type(rq->cmd[0]) == ATAPI_MISC; |
| 1062 | } |
| 1063 | |
| 1064 | static int ata_scsi_dev_config(struct scsi_device *sdev, |
| 1065 | struct ata_device *dev) |
Brian King | a6cce2a | 2006-03-17 17:04:15 -0600 | [diff] [blame] | 1066 | { |
Elias Oltmanns | 45fabbb | 2008-09-21 11:54:08 +0200 | [diff] [blame] | 1067 | if (!ata_id_has_unload(dev->id)) |
| 1068 | dev->flags |= ATA_DFLAG_NO_UNLOAD; |
| 1069 | |
Tejun Heo | 914ed35 | 2006-11-01 18:39:55 +0900 | [diff] [blame] | 1070 | /* configure max sectors */ |
| 1071 | blk_queue_max_sectors(sdev->request_queue, dev->max_sectors); |
Brian King | a6cce2a | 2006-03-17 17:04:15 -0600 | [diff] [blame] | 1072 | |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1073 | if (dev->class == ATA_DEV_ATAPI) { |
| 1074 | struct request_queue *q = sdev->request_queue; |
| 1075 | void *buf; |
| 1076 | |
Tejun Heo | e3790c7 | 2008-03-04 11:18:17 +0100 | [diff] [blame] | 1077 | /* set the min alignment and padding */ |
James Bottomley | d0ad3bc | 2008-01-22 13:43:48 -0600 | [diff] [blame] | 1078 | blk_queue_update_dma_alignment(sdev->request_queue, |
| 1079 | ATA_DMA_PAD_SZ - 1); |
FUJITA Tomonori | 27f8221 | 2008-07-04 09:30:03 +0200 | [diff] [blame] | 1080 | blk_queue_update_dma_pad(sdev->request_queue, |
| 1081 | ATA_DMA_PAD_SZ - 1); |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1082 | |
| 1083 | /* configure draining */ |
| 1084 | buf = kmalloc(ATAPI_MAX_DRAIN, q->bounce_gfp | GFP_KERNEL); |
| 1085 | if (!buf) { |
| 1086 | ata_dev_printk(dev, KERN_ERR, |
| 1087 | "drain buffer allocation failed\n"); |
| 1088 | return -ENOMEM; |
| 1089 | } |
| 1090 | |
| 1091 | blk_queue_dma_drain(q, atapi_drain_needed, buf, ATAPI_MAX_DRAIN); |
| 1092 | } else { |
Jens Axboe | 8bff7c6 | 2008-09-24 13:05:10 +0200 | [diff] [blame] | 1093 | if (ata_id_is_ssd(dev->id)) |
| 1094 | queue_flag_set_unlocked(QUEUE_FLAG_NONROT, |
| 1095 | sdev->request_queue); |
| 1096 | |
James Bottomley | d0ad3bc | 2008-01-22 13:43:48 -0600 | [diff] [blame] | 1097 | /* ATA devices must be sector aligned */ |
| 1098 | blk_queue_update_dma_alignment(sdev->request_queue, |
| 1099 | ATA_SECT_SIZE - 1); |
Tejun Heo | d8cf538 | 2008-01-15 08:46:59 +0900 | [diff] [blame] | 1100 | sdev->manage_start_stop = 1; |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 1101 | } |
Tejun Heo | d8cf538 | 2008-01-15 08:46:59 +0900 | [diff] [blame] | 1102 | |
Jeff Garzik | f26792d | 2007-10-29 17:18:39 -0400 | [diff] [blame] | 1103 | if (dev->flags & ATA_DFLAG_AN) |
| 1104 | set_bit(SDEV_EVT_MEDIA_CHANGE, sdev->supported_events); |
| 1105 | |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 1106 | if (dev->flags & ATA_DFLAG_NCQ) { |
| 1107 | int depth; |
| 1108 | |
| 1109 | depth = min(sdev->host->can_queue, ata_id_queue_depth(dev->id)); |
| 1110 | depth = min(ATA_MAX_QUEUE - 1, depth); |
Jens Axboe | 43a49cb | 2008-10-27 19:23:06 +0100 | [diff] [blame] | 1111 | |
| 1112 | /* |
| 1113 | * If this device is behind a port multiplier, we have |
| 1114 | * to share the tag map between all devices on that PMP. |
| 1115 | * Set up the shared tag map here and we get automatic. |
| 1116 | */ |
| 1117 | if (dev->link->ap->pmp_link) |
| 1118 | scsi_init_shared_tag_map(sdev->host, ATA_MAX_QUEUE - 1); |
| 1119 | |
Jens Axboe | 2fca5cc | 2008-10-22 09:34:49 +0200 | [diff] [blame] | 1120 | scsi_set_tag_type(sdev, MSG_SIMPLE_TAG); |
| 1121 | scsi_activate_tcq(sdev, depth); |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 1122 | } |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1123 | |
| 1124 | return 0; |
Brian King | a6cce2a | 2006-03-17 17:04:15 -0600 | [diff] [blame] | 1125 | } |
| 1126 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | /** |
| 1128 | * ata_scsi_slave_config - Set SCSI device attributes |
| 1129 | * @sdev: SCSI device to examine |
| 1130 | * |
| 1131 | * This is called before we actually start reading |
| 1132 | * and writing to the device, to configure certain |
| 1133 | * SCSI mid-layer behaviors. |
| 1134 | * |
| 1135 | * LOCKING: |
| 1136 | * Defined by SCSI layer. We don't really care. |
| 1137 | */ |
| 1138 | |
| 1139 | int ata_scsi_slave_config(struct scsi_device *sdev) |
| 1140 | { |
Tejun Heo | 3153436 | 2006-05-31 18:27:36 +0900 | [diff] [blame] | 1141 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
| 1142 | struct ata_device *dev = __ata_scsi_find_dev(ap, sdev); |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1143 | int rc = 0; |
Tejun Heo | 3153436 | 2006-05-31 18:27:36 +0900 | [diff] [blame] | 1144 | |
Brian King | a6cce2a | 2006-03-17 17:04:15 -0600 | [diff] [blame] | 1145 | ata_scsi_sdev_config(sdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1146 | |
Tejun Heo | 3153436 | 2006-05-31 18:27:36 +0900 | [diff] [blame] | 1147 | if (dev) |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1148 | rc = ata_scsi_dev_config(sdev, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1150 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1151 | } |
| 1152 | |
| 1153 | /** |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 1154 | * ata_scsi_slave_destroy - SCSI device is about to be destroyed |
| 1155 | * @sdev: SCSI device to be destroyed |
| 1156 | * |
| 1157 | * @sdev is about to be destroyed for hot/warm unplugging. If |
| 1158 | * this unplugging was initiated by libata as indicated by NULL |
| 1159 | * dev->sdev, this function doesn't have to do anything. |
| 1160 | * Otherwise, SCSI layer initiated warm-unplug is in progress. |
| 1161 | * Clear dev->sdev, schedule the device for ATA detach and invoke |
| 1162 | * EH. |
| 1163 | * |
| 1164 | * LOCKING: |
| 1165 | * Defined by SCSI layer. We don't really care. |
| 1166 | */ |
| 1167 | void ata_scsi_slave_destroy(struct scsi_device *sdev) |
| 1168 | { |
| 1169 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1170 | struct request_queue *q = sdev->request_queue; |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 1171 | unsigned long flags; |
| 1172 | struct ata_device *dev; |
| 1173 | |
| 1174 | if (!ap->ops->error_handler) |
| 1175 | return; |
| 1176 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1177 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 1178 | dev = __ata_scsi_find_dev(ap, sdev); |
| 1179 | if (dev && dev->sdev) { |
| 1180 | /* SCSI device already in CANCEL state, no need to offline it */ |
| 1181 | dev->sdev = NULL; |
| 1182 | dev->flags |= ATA_DFLAG_DETACH; |
| 1183 | ata_port_schedule_eh(ap); |
| 1184 | } |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1185 | spin_unlock_irqrestore(ap->lock, flags); |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1186 | |
| 1187 | kfree(q->dma_drain_buffer); |
| 1188 | q->dma_drain_buffer = NULL; |
| 1189 | q->dma_drain_size = 0; |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 1190 | } |
| 1191 | |
| 1192 | /** |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 1193 | * ata_scsi_change_queue_depth - SCSI callback for queue depth config |
| 1194 | * @sdev: SCSI device to configure queue depth for |
| 1195 | * @queue_depth: new queue depth |
| 1196 | * |
| 1197 | * This is libata standard hostt->change_queue_depth callback. |
| 1198 | * SCSI will call into this callback when user tries to set queue |
| 1199 | * depth via sysfs. |
| 1200 | * |
| 1201 | * LOCKING: |
| 1202 | * SCSI layer (we don't care) |
| 1203 | * |
| 1204 | * RETURNS: |
| 1205 | * Newly configured queue depth. |
| 1206 | */ |
| 1207 | int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth) |
| 1208 | { |
| 1209 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
| 1210 | struct ata_device *dev; |
Tejun Heo | 360f654 | 2006-09-30 19:45:00 +0900 | [diff] [blame] | 1211 | unsigned long flags; |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 1212 | |
Tejun Heo | c3c70c4 | 2007-02-20 23:31:22 +0900 | [diff] [blame] | 1213 | if (queue_depth < 1 || queue_depth == sdev->queue_depth) |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 1214 | return sdev->queue_depth; |
| 1215 | |
| 1216 | dev = ata_scsi_find_dev(ap, sdev); |
| 1217 | if (!dev || !ata_dev_enabled(dev)) |
| 1218 | return sdev->queue_depth; |
| 1219 | |
Tejun Heo | c3c70c4 | 2007-02-20 23:31:22 +0900 | [diff] [blame] | 1220 | /* NCQ enabled? */ |
Tejun Heo | 360f654 | 2006-09-30 19:45:00 +0900 | [diff] [blame] | 1221 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | c3c70c4 | 2007-02-20 23:31:22 +0900 | [diff] [blame] | 1222 | dev->flags &= ~ATA_DFLAG_NCQ_OFF; |
| 1223 | if (queue_depth == 1 || !ata_ncq_enabled(dev)) { |
Tejun Heo | 360f654 | 2006-09-30 19:45:00 +0900 | [diff] [blame] | 1224 | dev->flags |= ATA_DFLAG_NCQ_OFF; |
Tejun Heo | c3c70c4 | 2007-02-20 23:31:22 +0900 | [diff] [blame] | 1225 | queue_depth = 1; |
| 1226 | } |
Tejun Heo | 360f654 | 2006-09-30 19:45:00 +0900 | [diff] [blame] | 1227 | spin_unlock_irqrestore(ap->lock, flags); |
| 1228 | |
Tejun Heo | c3c70c4 | 2007-02-20 23:31:22 +0900 | [diff] [blame] | 1229 | /* limit and apply queue depth */ |
| 1230 | queue_depth = min(queue_depth, sdev->host->can_queue); |
| 1231 | queue_depth = min(queue_depth, ata_id_queue_depth(dev->id)); |
| 1232 | queue_depth = min(queue_depth, ATA_MAX_QUEUE - 1); |
| 1233 | |
| 1234 | if (sdev->queue_depth == queue_depth) |
| 1235 | return -EINVAL; |
| 1236 | |
| 1237 | scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, queue_depth); |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 1238 | return queue_depth; |
| 1239 | } |
| 1240 | |
Tejun Heo | d9aca22 | 2007-05-17 16:43:26 +0200 | [diff] [blame] | 1241 | /* XXX: for spindown warning */ |
Tejun Heo | da071b4 | 2007-05-14 17:26:18 +0200 | [diff] [blame] | 1242 | static void ata_delayed_done_timerfn(unsigned long arg) |
| 1243 | { |
| 1244 | struct scsi_cmnd *scmd = (void *)arg; |
| 1245 | |
| 1246 | scmd->scsi_done(scmd); |
| 1247 | } |
| 1248 | |
Tejun Heo | d9aca22 | 2007-05-17 16:43:26 +0200 | [diff] [blame] | 1249 | /* XXX: for spindown warning */ |
Tejun Heo | da071b4 | 2007-05-14 17:26:18 +0200 | [diff] [blame] | 1250 | static void ata_delayed_done(struct scsi_cmnd *scmd) |
| 1251 | { |
| 1252 | static struct timer_list timer; |
| 1253 | |
| 1254 | setup_timer(&timer, ata_delayed_done_timerfn, (unsigned long)scmd); |
| 1255 | mod_timer(&timer, jiffies + 5 * HZ); |
| 1256 | } |
| 1257 | |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 1258 | /** |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1259 | * ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command |
| 1260 | * @qc: Storage for translated ATA taskfile |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1261 | * |
| 1262 | * Sets up an ATA taskfile to issue STANDBY (to stop) or READ VERIFY |
| 1263 | * (to start). Perhaps these commands should be preceded by |
| 1264 | * CHECK POWER MODE to see what power mode the device is already in. |
| 1265 | * [See SAT revision 5 at www.t10.org] |
| 1266 | * |
| 1267 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1268 | * spin_lock_irqsave(host lock) |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1269 | * |
| 1270 | * RETURNS: |
| 1271 | * Zero on success, non-zero on error. |
| 1272 | */ |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 1273 | static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc) |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1274 | { |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1275 | struct scsi_cmnd *scmd = qc->scsicmd; |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1276 | struct ata_taskfile *tf = &qc->tf; |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 1277 | const u8 *cdb = scmd->cmnd; |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1278 | |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 1279 | if (scmd->cmd_len < 5) |
| 1280 | goto invalid_fld; |
| 1281 | |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1282 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; |
| 1283 | tf->protocol = ATA_PROT_NODATA; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1284 | if (cdb[1] & 0x1) { |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1285 | ; /* ignore IMMED bit, violates sat-r05 */ |
| 1286 | } |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1287 | if (cdb[4] & 0x2) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1288 | goto invalid_fld; /* LOEJ bit set not supported */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1289 | if (((cdb[4] >> 4) & 0xf) != 0) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1290 | goto invalid_fld; /* power conditions not supported */ |
Tejun Heo | e31e853 | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 1291 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1292 | if (cdb[4] & 0x1) { |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1293 | tf->nsect = 1; /* 1 sector, lba=0 */ |
Albert Lee | 9d5b130 | 2005-10-04 08:48:17 -0400 | [diff] [blame] | 1294 | |
| 1295 | if (qc->dev->flags & ATA_DFLAG_LBA) { |
Tejun Heo | c44078c | 2006-05-15 20:57:21 +0900 | [diff] [blame] | 1296 | tf->flags |= ATA_TFLAG_LBA; |
Albert Lee | 9d5b130 | 2005-10-04 08:48:17 -0400 | [diff] [blame] | 1297 | |
| 1298 | tf->lbah = 0x0; |
| 1299 | tf->lbam = 0x0; |
| 1300 | tf->lbal = 0x0; |
| 1301 | tf->device |= ATA_LBA; |
| 1302 | } else { |
| 1303 | /* CHS */ |
| 1304 | tf->lbal = 0x1; /* sect */ |
| 1305 | tf->lbam = 0x0; /* cyl low */ |
| 1306 | tf->lbah = 0x0; /* cyl high */ |
| 1307 | } |
| 1308 | |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1309 | tf->command = ATA_CMD_VERIFY; /* READ VERIFY */ |
Tejun Heo | 920a4b1 | 2007-05-04 21:28:48 +0200 | [diff] [blame] | 1310 | } else { |
| 1311 | /* XXX: This is for backward compatibility, will be |
| 1312 | * removed. Read Documentation/feature-removal-schedule.txt |
| 1313 | * for more info. |
| 1314 | */ |
Tejun Heo | d9aca22 | 2007-05-17 16:43:26 +0200 | [diff] [blame] | 1315 | if ((qc->dev->flags & ATA_DFLAG_SPUNDOWN) && |
Tejun Heo | 920a4b1 | 2007-05-04 21:28:48 +0200 | [diff] [blame] | 1316 | (system_state == SYSTEM_HALT || |
| 1317 | system_state == SYSTEM_POWER_OFF)) { |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1318 | static unsigned long warned; |
Tejun Heo | 920a4b1 | 2007-05-04 21:28:48 +0200 | [diff] [blame] | 1319 | |
Tejun Heo | da071b4 | 2007-05-14 17:26:18 +0200 | [diff] [blame] | 1320 | if (!test_and_set_bit(0, &warned)) { |
Tejun Heo | 920a4b1 | 2007-05-04 21:28:48 +0200 | [diff] [blame] | 1321 | ata_dev_printk(qc->dev, KERN_WARNING, |
| 1322 | "DISK MIGHT NOT BE SPUN DOWN PROPERLY. " |
| 1323 | "UPDATE SHUTDOWN UTILITY\n"); |
| 1324 | ata_dev_printk(qc->dev, KERN_WARNING, |
| 1325 | "For more info, visit " |
| 1326 | "http://linux-ata.org/shutdown.html\n"); |
Tejun Heo | da071b4 | 2007-05-14 17:26:18 +0200 | [diff] [blame] | 1327 | |
| 1328 | /* ->scsi_done is not used, use it for |
| 1329 | * delayed completion. |
| 1330 | */ |
| 1331 | scmd->scsi_done = qc->scsidone; |
| 1332 | qc->scsidone = ata_delayed_done; |
Tejun Heo | 920a4b1 | 2007-05-04 21:28:48 +0200 | [diff] [blame] | 1333 | } |
| 1334 | scmd->result = SAM_STAT_GOOD; |
| 1335 | return 1; |
| 1336 | } |
| 1337 | |
Robert Hancock | 78981a7 | 2007-01-30 00:59:18 -0800 | [diff] [blame] | 1338 | /* Issue ATA STANDBY IMMEDIATE command */ |
| 1339 | tf->command = ATA_CMD_STANDBYNOW1; |
Tejun Heo | 920a4b1 | 2007-05-04 21:28:48 +0200 | [diff] [blame] | 1340 | } |
Robert Hancock | 78981a7 | 2007-01-30 00:59:18 -0800 | [diff] [blame] | 1341 | |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1342 | /* |
| 1343 | * Standby and Idle condition timers could be implemented but that |
| 1344 | * would require libata to implement the Power condition mode page |
| 1345 | * and allow the user to change it. Changing mode pages requires |
| 1346 | * MODE SELECT to be implemented. |
| 1347 | */ |
| 1348 | |
| 1349 | return 0; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1350 | |
| 1351 | invalid_fld: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1352 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1353 | /* "Invalid field in cbd" */ |
| 1354 | return 1; |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1355 | } |
| 1356 | |
| 1357 | |
| 1358 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1359 | * ata_scsi_flush_xlat - Translate SCSI SYNCHRONIZE CACHE command |
| 1360 | * @qc: Storage for translated ATA taskfile |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | * |
| 1362 | * Sets up an ATA taskfile to issue FLUSH CACHE or |
| 1363 | * FLUSH CACHE EXT. |
| 1364 | * |
| 1365 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1366 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1367 | * |
| 1368 | * RETURNS: |
| 1369 | * Zero on success, non-zero on error. |
| 1370 | */ |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 1371 | static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1372 | { |
| 1373 | struct ata_taskfile *tf = &qc->tf; |
| 1374 | |
| 1375 | tf->flags |= ATA_TFLAG_DEVICE; |
| 1376 | tf->protocol = ATA_PROT_NODATA; |
| 1377 | |
Tejun Heo | 6fc49ad | 2006-11-11 20:10:45 +0900 | [diff] [blame] | 1378 | if (qc->dev->flags & ATA_DFLAG_FLUSH_EXT) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1379 | tf->command = ATA_CMD_FLUSH_EXT; |
| 1380 | else |
| 1381 | tf->command = ATA_CMD_FLUSH; |
| 1382 | |
Tejun Heo | b666da3 | 2007-10-26 15:53:59 +0900 | [diff] [blame] | 1383 | /* flush is critical for IO integrity, consider it an IO command */ |
| 1384 | qc->flags |= ATA_QCFLAG_IO; |
| 1385 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1386 | return 0; |
| 1387 | } |
| 1388 | |
| 1389 | /** |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1390 | * scsi_6_lba_len - Get LBA and transfer length |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1391 | * @cdb: SCSI command to translate |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1392 | * |
| 1393 | * Calculate LBA and transfer length for 6-byte commands. |
| 1394 | * |
| 1395 | * RETURNS: |
| 1396 | * @plba: the LBA |
| 1397 | * @plen: the transfer length |
| 1398 | */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1399 | static void scsi_6_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1400 | { |
| 1401 | u64 lba = 0; |
Jeff Garzik | 6c7b7d2 | 2007-05-25 04:39:39 -0400 | [diff] [blame] | 1402 | u32 len; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1403 | |
| 1404 | VPRINTK("six-byte command\n"); |
| 1405 | |
Jeff Garzik | 6c7b7d2 | 2007-05-25 04:39:39 -0400 | [diff] [blame] | 1406 | lba |= ((u64)(cdb[1] & 0x1f)) << 16; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1407 | lba |= ((u64)cdb[2]) << 8; |
| 1408 | lba |= ((u64)cdb[3]); |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1409 | |
Jeff Garzik | 6c7b7d2 | 2007-05-25 04:39:39 -0400 | [diff] [blame] | 1410 | len = cdb[4]; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1411 | |
| 1412 | *plba = lba; |
| 1413 | *plen = len; |
| 1414 | } |
| 1415 | |
| 1416 | /** |
| 1417 | * scsi_10_lba_len - Get LBA and transfer length |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1418 | * @cdb: SCSI command to translate |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1419 | * |
| 1420 | * Calculate LBA and transfer length for 10-byte commands. |
| 1421 | * |
| 1422 | * RETURNS: |
| 1423 | * @plba: the LBA |
| 1424 | * @plen: the transfer length |
| 1425 | */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1426 | static void scsi_10_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1427 | { |
| 1428 | u64 lba = 0; |
| 1429 | u32 len = 0; |
| 1430 | |
| 1431 | VPRINTK("ten-byte command\n"); |
| 1432 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1433 | lba |= ((u64)cdb[2]) << 24; |
| 1434 | lba |= ((u64)cdb[3]) << 16; |
| 1435 | lba |= ((u64)cdb[4]) << 8; |
| 1436 | lba |= ((u64)cdb[5]); |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1437 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1438 | len |= ((u32)cdb[7]) << 8; |
| 1439 | len |= ((u32)cdb[8]); |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1440 | |
| 1441 | *plba = lba; |
| 1442 | *plen = len; |
| 1443 | } |
| 1444 | |
| 1445 | /** |
| 1446 | * scsi_16_lba_len - Get LBA and transfer length |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1447 | * @cdb: SCSI command to translate |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1448 | * |
| 1449 | * Calculate LBA and transfer length for 16-byte commands. |
| 1450 | * |
| 1451 | * RETURNS: |
| 1452 | * @plba: the LBA |
| 1453 | * @plen: the transfer length |
| 1454 | */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1455 | static void scsi_16_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1456 | { |
| 1457 | u64 lba = 0; |
| 1458 | u32 len = 0; |
| 1459 | |
| 1460 | VPRINTK("sixteen-byte command\n"); |
| 1461 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1462 | lba |= ((u64)cdb[2]) << 56; |
| 1463 | lba |= ((u64)cdb[3]) << 48; |
| 1464 | lba |= ((u64)cdb[4]) << 40; |
| 1465 | lba |= ((u64)cdb[5]) << 32; |
| 1466 | lba |= ((u64)cdb[6]) << 24; |
| 1467 | lba |= ((u64)cdb[7]) << 16; |
| 1468 | lba |= ((u64)cdb[8]) << 8; |
| 1469 | lba |= ((u64)cdb[9]); |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1470 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1471 | len |= ((u32)cdb[10]) << 24; |
| 1472 | len |= ((u32)cdb[11]) << 16; |
| 1473 | len |= ((u32)cdb[12]) << 8; |
| 1474 | len |= ((u32)cdb[13]); |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1475 | |
| 1476 | *plba = lba; |
| 1477 | *plen = len; |
| 1478 | } |
| 1479 | |
| 1480 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1481 | * ata_scsi_verify_xlat - Translate SCSI VERIFY command into an ATA one |
| 1482 | * @qc: Storage for translated ATA taskfile |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1483 | * |
| 1484 | * Converts SCSI VERIFY command to an ATA READ VERIFY command. |
| 1485 | * |
| 1486 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1487 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1488 | * |
| 1489 | * RETURNS: |
| 1490 | * Zero on success, non-zero on error. |
| 1491 | */ |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 1492 | static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1493 | { |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1494 | struct scsi_cmnd *scmd = qc->scsicmd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1495 | struct ata_taskfile *tf = &qc->tf; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1496 | struct ata_device *dev = qc->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1497 | u64 dev_sectors = qc->dev->n_sectors; |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 1498 | const u8 *cdb = scmd->cmnd; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1499 | u64 block; |
| 1500 | u32 n_block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1501 | |
| 1502 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 1503 | tf->protocol = ATA_PROT_NODATA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1504 | |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 1505 | if (cdb[0] == VERIFY) { |
| 1506 | if (scmd->cmd_len < 10) |
| 1507 | goto invalid_fld; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1508 | scsi_10_lba_len(cdb, &block, &n_block); |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 1509 | } else if (cdb[0] == VERIFY_16) { |
| 1510 | if (scmd->cmd_len < 16) |
| 1511 | goto invalid_fld; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1512 | scsi_16_lba_len(cdb, &block, &n_block); |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 1513 | } else |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1514 | goto invalid_fld; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1515 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1516 | if (!n_block) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1517 | goto nothing_to_do; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1518 | if (block >= dev_sectors) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1519 | goto out_of_range; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1520 | if ((block + n_block) > dev_sectors) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1521 | goto out_of_range; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1522 | |
Albert Lee | 0750669 | 2005-10-12 15:04:18 +0800 | [diff] [blame] | 1523 | if (dev->flags & ATA_DFLAG_LBA) { |
| 1524 | tf->flags |= ATA_TFLAG_LBA; |
| 1525 | |
Albert Lee | c6a33e2 | 2005-10-12 15:12:26 +0800 | [diff] [blame] | 1526 | if (lba_28_ok(block, n_block)) { |
| 1527 | /* use LBA28 */ |
| 1528 | tf->command = ATA_CMD_VERIFY; |
| 1529 | tf->device |= (block >> 24) & 0xf; |
| 1530 | } else if (lba_48_ok(block, n_block)) { |
| 1531 | if (!(dev->flags & ATA_DFLAG_LBA48)) |
| 1532 | goto out_of_range; |
Albert Lee | 0750669 | 2005-10-12 15:04:18 +0800 | [diff] [blame] | 1533 | |
| 1534 | /* use LBA48 */ |
| 1535 | tf->flags |= ATA_TFLAG_LBA48; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1536 | tf->command = ATA_CMD_VERIFY_EXT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1537 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1538 | tf->hob_nsect = (n_block >> 8) & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1539 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1540 | tf->hob_lbah = (block >> 40) & 0xff; |
| 1541 | tf->hob_lbam = (block >> 32) & 0xff; |
| 1542 | tf->hob_lbal = (block >> 24) & 0xff; |
Albert Lee | c6a33e2 | 2005-10-12 15:12:26 +0800 | [diff] [blame] | 1543 | } else |
| 1544 | /* request too large even for LBA48 */ |
| 1545 | goto out_of_range; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1546 | |
| 1547 | tf->nsect = n_block & 0xff; |
| 1548 | |
| 1549 | tf->lbah = (block >> 16) & 0xff; |
| 1550 | tf->lbam = (block >> 8) & 0xff; |
| 1551 | tf->lbal = block & 0xff; |
| 1552 | |
| 1553 | tf->device |= ATA_LBA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1554 | } else { |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1555 | /* CHS */ |
| 1556 | u32 sect, head, cyl, track; |
| 1557 | |
Albert Lee | c6a33e2 | 2005-10-12 15:12:26 +0800 | [diff] [blame] | 1558 | if (!lba_28_ok(block, n_block)) |
| 1559 | goto out_of_range; |
Albert Lee | 0750669 | 2005-10-12 15:04:18 +0800 | [diff] [blame] | 1560 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1561 | /* Convert LBA to CHS */ |
| 1562 | track = (u32)block / dev->sectors; |
| 1563 | cyl = track / dev->heads; |
| 1564 | head = track % dev->heads; |
| 1565 | sect = (u32)block % dev->sectors + 1; |
| 1566 | |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1567 | DPRINTK("block %u track %u cyl %u head %u sect %u\n", |
| 1568 | (u32)block, track, cyl, head, sect); |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 1569 | |
| 1570 | /* Check whether the converted CHS can fit. |
| 1571 | Cylinder: 0-65535 |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1572 | Head: 0-15 |
| 1573 | Sector: 1-255*/ |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 1574 | if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect)) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1575 | goto out_of_range; |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 1576 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1577 | tf->command = ATA_CMD_VERIFY; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1578 | tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */ |
| 1579 | tf->lbal = sect; |
| 1580 | tf->lbam = cyl; |
| 1581 | tf->lbah = cyl >> 8; |
| 1582 | tf->device |= head; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1583 | } |
| 1584 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1585 | return 0; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1586 | |
| 1587 | invalid_fld: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1588 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1589 | /* "Invalid field in cbd" */ |
| 1590 | return 1; |
| 1591 | |
| 1592 | out_of_range: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1593 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1594 | /* "Logical Block Address out of range" */ |
| 1595 | return 1; |
| 1596 | |
| 1597 | nothing_to_do: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1598 | scmd->result = SAM_STAT_GOOD; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1599 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1600 | } |
| 1601 | |
| 1602 | /** |
| 1603 | * ata_scsi_rw_xlat - Translate SCSI r/w command into an ATA one |
| 1604 | * @qc: Storage for translated ATA taskfile |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1605 | * |
| 1606 | * Converts any of six SCSI read/write commands into the |
| 1607 | * ATA counterpart, including starting sector (LBA), |
| 1608 | * sector count, and taking into account the device's LBA48 |
| 1609 | * support. |
| 1610 | * |
| 1611 | * Commands %READ_6, %READ_10, %READ_16, %WRITE_6, %WRITE_10, and |
| 1612 | * %WRITE_16 are currently supported. |
| 1613 | * |
| 1614 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1615 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1616 | * |
| 1617 | * RETURNS: |
| 1618 | * Zero on success, non-zero on error. |
| 1619 | */ |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 1620 | static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1621 | { |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1622 | struct scsi_cmnd *scmd = qc->scsicmd; |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 1623 | const u8 *cdb = scmd->cmnd; |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 1624 | unsigned int tf_flags = 0; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1625 | u64 block; |
| 1626 | u32 n_block; |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 1627 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1628 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1629 | if (cdb[0] == WRITE_10 || cdb[0] == WRITE_6 || cdb[0] == WRITE_16) |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 1630 | tf_flags |= ATA_TFLAG_WRITE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1631 | |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 1632 | /* Calculate the SCSI LBA, transfer length and FUA. */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1633 | switch (cdb[0]) { |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1634 | case READ_10: |
| 1635 | case WRITE_10: |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 1636 | if (unlikely(scmd->cmd_len < 10)) |
| 1637 | goto invalid_fld; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1638 | scsi_10_lba_len(cdb, &block, &n_block); |
| 1639 | if (unlikely(cdb[1] & (1 << 3))) |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 1640 | tf_flags |= ATA_TFLAG_FUA; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1641 | break; |
| 1642 | case READ_6: |
| 1643 | case WRITE_6: |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 1644 | if (unlikely(scmd->cmd_len < 6)) |
| 1645 | goto invalid_fld; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1646 | scsi_6_lba_len(cdb, &block, &n_block); |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1647 | |
| 1648 | /* for 6-byte r/w commands, transfer length 0 |
| 1649 | * means 256 blocks of data, not 0 block. |
| 1650 | */ |
Jeff Garzik | 76b2bf9 | 2005-08-29 19:24:43 -0400 | [diff] [blame] | 1651 | if (!n_block) |
| 1652 | n_block = 256; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1653 | break; |
| 1654 | case READ_16: |
| 1655 | case WRITE_16: |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 1656 | if (unlikely(scmd->cmd_len < 16)) |
| 1657 | goto invalid_fld; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1658 | scsi_16_lba_len(cdb, &block, &n_block); |
| 1659 | if (unlikely(cdb[1] & (1 << 3))) |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 1660 | tf_flags |= ATA_TFLAG_FUA; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1661 | break; |
| 1662 | default: |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1663 | DPRINTK("no-byte command\n"); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1664 | goto invalid_fld; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | } |
| 1666 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1667 | /* Check and compose ATA command */ |
| 1668 | if (!n_block) |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1669 | /* For 10-byte and 16-byte SCSI R/W commands, transfer |
| 1670 | * length 0 means transfer 0 block of data. |
| 1671 | * However, for ATA R/W commands, sector count 0 means |
| 1672 | * 256 or 65536 sectors, not 0 sectors as in SCSI. |
Alan Cox | f51750d | 2005-11-07 17:06:33 +0000 | [diff] [blame] | 1673 | * |
| 1674 | * WARNING: one or two older ATA drives treat 0 as 0... |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1675 | */ |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1676 | goto nothing_to_do; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1677 | |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 1678 | qc->flags |= ATA_QCFLAG_IO; |
Tejun Heo | 726f078 | 2007-01-03 17:30:39 +0900 | [diff] [blame] | 1679 | qc->nbytes = n_block * ATA_SECT_SIZE; |
Tejun Heo | 3dc1d88 | 2006-05-15 21:03:45 +0900 | [diff] [blame] | 1680 | |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 1681 | rc = ata_build_rw_tf(&qc->tf, qc->dev, block, n_block, tf_flags, |
| 1682 | qc->tag); |
| 1683 | if (likely(rc == 0)) |
| 1684 | return 0; |
Tejun Heo | 3dc1d88 | 2006-05-15 21:03:45 +0900 | [diff] [blame] | 1685 | |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 1686 | if (rc == -ERANGE) |
| 1687 | goto out_of_range; |
| 1688 | /* treat all other errors as -EINVAL, fall through */ |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1689 | invalid_fld: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1690 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1691 | /* "Invalid field in cbd" */ |
| 1692 | return 1; |
| 1693 | |
| 1694 | out_of_range: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1695 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1696 | /* "Logical Block Address out of range" */ |
| 1697 | return 1; |
| 1698 | |
| 1699 | nothing_to_do: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1700 | scmd->result = SAM_STAT_GOOD; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1701 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1702 | } |
| 1703 | |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1704 | static void ata_scsi_qc_complete(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1705 | { |
Tejun Heo | c31f571 | 2006-11-22 12:39:43 +0900 | [diff] [blame] | 1706 | struct ata_port *ap = qc->ap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1707 | struct scsi_cmnd *cmd = qc->scsicmd; |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 1708 | u8 *cdb = cmd->cmnd; |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1709 | int need_sense = (qc->err_mask != 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1710 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1711 | /* For ATA pass thru (SAT) commands, generate a sense block if |
| 1712 | * user mandated it or if there's an error. Note that if we |
| 1713 | * generate because the user forced us to, a check condition |
| 1714 | * is generated and the ATA register values are returned |
| 1715 | * whether the command completed successfully or not. If there |
| 1716 | * was no error, SK, ASC and ASCQ will all be zero. |
| 1717 | */ |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 1718 | if (((cdb[0] == ATA_16) || (cdb[0] == ATA_12)) && |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1719 | ((cdb[2] & 0x20) || need_sense)) { |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 1720 | ata_gen_passthru_sense(qc); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1721 | } else { |
| 1722 | if (!need_sense) { |
| 1723 | cmd->result = SAM_STAT_GOOD; |
| 1724 | } else { |
| 1725 | /* TODO: decide which descriptor format to use |
| 1726 | * for 48b LBA devices and call that here |
| 1727 | * instead of the fixed desc, which is only |
| 1728 | * good for smaller LBA (and maybe CHS?) |
| 1729 | * devices. |
| 1730 | */ |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 1731 | ata_gen_ata_sense(qc); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1732 | } |
| 1733 | } |
| 1734 | |
Tejun Heo | d9aca22 | 2007-05-17 16:43:26 +0200 | [diff] [blame] | 1735 | /* XXX: track spindown state for spindown skipping and warning */ |
Tejun Heo | 13b8d09 | 2007-05-15 12:29:22 +0200 | [diff] [blame] | 1736 | if (unlikely(qc->tf.command == ATA_CMD_STANDBY || |
| 1737 | qc->tf.command == ATA_CMD_STANDBYNOW1)) |
| 1738 | qc->dev->flags |= ATA_DFLAG_SPUNDOWN; |
| 1739 | else if (likely(system_state != SYSTEM_HALT && |
| 1740 | system_state != SYSTEM_POWER_OFF)) |
| 1741 | qc->dev->flags &= ~ATA_DFLAG_SPUNDOWN; |
| 1742 | |
Tejun Heo | c31f571 | 2006-11-22 12:39:43 +0900 | [diff] [blame] | 1743 | if (need_sense && !ap->ops->error_handler) |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 1744 | ata_dump_status(ap->print_id, &qc->result_tf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1745 | |
| 1746 | qc->scsidone(cmd); |
| 1747 | |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1748 | ata_qc_free(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1749 | } |
| 1750 | |
| 1751 | /** |
| 1752 | * ata_scsi_translate - Translate then issue SCSI command to ATA device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1753 | * @dev: ATA device to which the command is addressed |
| 1754 | * @cmd: SCSI command to execute |
| 1755 | * @done: SCSI command completion function |
| 1756 | * @xlat_func: Actor which translates @cmd to an ATA taskfile |
| 1757 | * |
| 1758 | * Our ->queuecommand() function has decided that the SCSI |
| 1759 | * command issued can be directly translated into an ATA |
| 1760 | * command, rather than handled internally. |
| 1761 | * |
| 1762 | * This function sets up an ata_queued_cmd structure for the |
| 1763 | * SCSI command, and sends that ata_queued_cmd to the hardware. |
| 1764 | * |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1765 | * The xlat_func argument (actor) returns 0 if ready to execute |
| 1766 | * ATA command, else 1 to finish translation. If 1 is returned |
| 1767 | * then cmd->result (and possibly cmd->sense_buffer) are assumed |
| 1768 | * to be set reflecting an error condition or clean (early) |
| 1769 | * termination. |
| 1770 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1771 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1772 | * spin_lock_irqsave(host lock) |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 1773 | * |
| 1774 | * RETURNS: |
| 1775 | * 0 on success, SCSI_ML_QUEUE_DEVICE_BUSY if the command |
| 1776 | * needs to be deferred. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1777 | */ |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 1778 | static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd, |
| 1779 | void (*done)(struct scsi_cmnd *), |
| 1780 | ata_xlat_func_t xlat_func) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1781 | { |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1782 | struct ata_port *ap = dev->link->ap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1783 | struct ata_queued_cmd *qc; |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1784 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1785 | |
| 1786 | VPRINTK("ENTER\n"); |
| 1787 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 1788 | qc = ata_scsi_qc_new(dev, cmd, done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1789 | if (!qc) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1790 | goto err_mem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1791 | |
| 1792 | /* data is present; dma-map it */ |
| be7db05 | 2005-04-17 15:26:13 -0500 | [diff] [blame] | 1793 | if (cmd->sc_data_direction == DMA_FROM_DEVICE || |
| 1794 | cmd->sc_data_direction == DMA_TO_DEVICE) { |
Boaz Harrosh | 7120165 | 2007-09-18 17:48:50 +0200 | [diff] [blame] | 1795 | if (unlikely(scsi_bufflen(cmd) < 1)) { |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 1796 | ata_dev_printk(dev, KERN_WARNING, |
| 1797 | "WARNING: zero len r/w req\n"); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1798 | goto err_did; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1799 | } |
| 1800 | |
Boaz Harrosh | 7120165 | 2007-09-18 17:48:50 +0200 | [diff] [blame] | 1801 | ata_sg_init(qc, scsi_sglist(cmd), scsi_sg_count(cmd)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1802 | |
| 1803 | qc->dma_dir = cmd->sc_data_direction; |
| 1804 | } |
| 1805 | |
| 1806 | qc->complete_fn = ata_scsi_qc_complete; |
| 1807 | |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 1808 | if (xlat_func(qc)) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1809 | goto early_finish; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1810 | |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1811 | if (ap->ops->qc_defer) { |
| 1812 | if ((rc = ap->ops->qc_defer(qc))) |
| 1813 | goto defer; |
| 1814 | } |
| 1815 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1816 | /* select device, send command to hardware */ |
Tejun Heo | 8e0e694 | 2006-03-31 20:41:11 +0900 | [diff] [blame] | 1817 | ata_qc_issue(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1818 | |
| 1819 | VPRINTK("EXIT\n"); |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 1820 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1821 | |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1822 | early_finish: |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1823 | ata_qc_free(qc); |
Tejun Heo | da071b4 | 2007-05-14 17:26:18 +0200 | [diff] [blame] | 1824 | qc->scsidone(cmd); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1825 | DPRINTK("EXIT - early finish (good or error)\n"); |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 1826 | return 0; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1827 | |
| 1828 | err_did: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1829 | ata_qc_free(qc); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1830 | cmd->result = (DID_ERROR << 16); |
Tejun Heo | da071b4 | 2007-05-14 17:26:18 +0200 | [diff] [blame] | 1831 | qc->scsidone(cmd); |
Darrick J. Wong | 253b92e | 2006-11-14 09:55:41 -0500 | [diff] [blame] | 1832 | err_mem: |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1833 | DPRINTK("EXIT - internal\n"); |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 1834 | return 0; |
Tejun Heo | 3dc1d88 | 2006-05-15 21:03:45 +0900 | [diff] [blame] | 1835 | |
| 1836 | defer: |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1837 | ata_qc_free(qc); |
Tejun Heo | 3dc1d88 | 2006-05-15 21:03:45 +0900 | [diff] [blame] | 1838 | DPRINTK("EXIT - defer\n"); |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1839 | if (rc == ATA_DEFER_LINK) |
| 1840 | return SCSI_MLQUEUE_DEVICE_BUSY; |
| 1841 | else |
| 1842 | return SCSI_MLQUEUE_HOST_BUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1843 | } |
| 1844 | |
| 1845 | /** |
| 1846 | * ata_scsi_rbuf_get - Map response buffer. |
Randy Dunlap | ec2a20e | 2008-04-30 12:57:00 -0700 | [diff] [blame] | 1847 | * @cmd: SCSI command containing buffer to be mapped. |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1848 | * @flags: unsigned long variable to store irq enable status |
| 1849 | * @copy_in: copy in from user buffer |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1850 | * |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1851 | * Prepare buffer for simulated SCSI commands. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1852 | * |
| 1853 | * LOCKING: |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1854 | * spin_lock_irqsave(ata_scsi_rbuf_lock) on success |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1855 | * |
| 1856 | * RETURNS: |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1857 | * Pointer to response buffer. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1858 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1859 | static void *ata_scsi_rbuf_get(struct scsi_cmnd *cmd, bool copy_in, |
| 1860 | unsigned long *flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1861 | { |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1862 | spin_lock_irqsave(&ata_scsi_rbuf_lock, *flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1863 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1864 | memset(ata_scsi_rbuf, 0, ATA_SCSI_RBUF_SIZE); |
| 1865 | if (copy_in) |
| 1866 | sg_copy_to_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), |
| 1867 | ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE); |
| 1868 | return ata_scsi_rbuf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1869 | } |
| 1870 | |
| 1871 | /** |
| 1872 | * ata_scsi_rbuf_put - Unmap response buffer. |
| 1873 | * @cmd: SCSI command containing buffer to be unmapped. |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1874 | * @copy_out: copy out result |
| 1875 | * @flags: @flags passed to ata_scsi_rbuf_get() |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1876 | * |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1877 | * Returns rbuf buffer. The result is copied to @cmd's buffer if |
| 1878 | * @copy_back is true. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1879 | * |
| 1880 | * LOCKING: |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1881 | * Unlocks ata_scsi_rbuf_lock. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1882 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1883 | static inline void ata_scsi_rbuf_put(struct scsi_cmnd *cmd, bool copy_out, |
| 1884 | unsigned long *flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1885 | { |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1886 | if (copy_out) |
| 1887 | sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), |
| 1888 | ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE); |
| 1889 | spin_unlock_irqrestore(&ata_scsi_rbuf_lock, *flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1890 | } |
| 1891 | |
| 1892 | /** |
| 1893 | * ata_scsi_rbuf_fill - wrapper for SCSI command simulators |
| 1894 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1895 | * @actor: Callback hook for desired SCSI command simulator |
| 1896 | * |
| 1897 | * Takes care of the hard work of simulating a SCSI command... |
| 1898 | * Mapping the response buffer, calling the command's handler, |
| 1899 | * and handling the handler's return value. This return value |
| 1900 | * indicates whether the handler wishes the SCSI command to be |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1901 | * completed successfully (0), or not (in which case cmd->result |
| 1902 | * and sense buffer are assumed to be set). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1903 | * |
| 1904 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1905 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1906 | */ |
Tejun Heo | f0761be | 2008-04-28 17:16:52 +0900 | [diff] [blame] | 1907 | static void ata_scsi_rbuf_fill(struct ata_scsi_args *args, |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1908 | unsigned int (*actor)(struct ata_scsi_args *args, u8 *rbuf)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1909 | { |
| 1910 | u8 *rbuf; |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1911 | unsigned int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1912 | struct scsi_cmnd *cmd = args->cmd; |
Jeff Garzik | b445c56 | 2008-02-29 19:10:51 -0500 | [diff] [blame] | 1913 | unsigned long flags; |
| 1914 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1915 | rbuf = ata_scsi_rbuf_get(cmd, false, &flags); |
| 1916 | rc = actor(args, rbuf); |
| 1917 | ata_scsi_rbuf_put(cmd, rc == 0, &flags); |
Jeff Garzik | b445c56 | 2008-02-29 19:10:51 -0500 | [diff] [blame] | 1918 | |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1919 | if (rc == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1920 | cmd->result = SAM_STAT_GOOD; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1921 | args->done(cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1922 | } |
| 1923 | |
| 1924 | /** |
| 1925 | * ata_scsiop_inq_std - Simulate INQUIRY command |
| 1926 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1927 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1928 | * |
| 1929 | * Returns standard device identification data associated |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1930 | * with non-VPD INQUIRY command output. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1931 | * |
| 1932 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1933 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1934 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1935 | static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1936 | { |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1937 | const u8 versions[] = { |
| 1938 | 0x60, /* SAM-3 (no version claimed) */ |
| 1939 | |
| 1940 | 0x03, |
| 1941 | 0x20, /* SBC-2 (no version claimed) */ |
| 1942 | |
| 1943 | 0x02, |
| 1944 | 0x60 /* SPC-3 (no version claimed) */ |
| 1945 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1946 | u8 hdr[] = { |
| 1947 | TYPE_DISK, |
| 1948 | 0, |
| 1949 | 0x5, /* claim SPC-3 version compatibility */ |
| 1950 | 2, |
| 1951 | 95 - 4 |
| 1952 | }; |
| 1953 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1954 | VPRINTK("ENTER\n"); |
| 1955 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1956 | /* set scsi removeable (RMB) bit per ata bit */ |
| 1957 | if (ata_id_removeable(args->id)) |
| 1958 | hdr[1] |= (1 << 7); |
| 1959 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1960 | memcpy(rbuf, hdr, sizeof(hdr)); |
Jens Axboe | 2fca5cc | 2008-10-22 09:34:49 +0200 | [diff] [blame] | 1961 | |
| 1962 | /* if ncq, set tags supported */ |
| 1963 | if (ata_id_has_ncq(args->id)) |
| 1964 | rbuf[7] |= (1 << 1); |
| 1965 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1966 | memcpy(&rbuf[8], "ATA ", 8); |
| 1967 | ata_id_string(args->id, &rbuf[16], ATA_ID_PROD, 16); |
| 1968 | ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV, 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1969 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1970 | if (rbuf[32] == 0 || rbuf[32] == ' ') |
| 1971 | memcpy(&rbuf[32], "n/a ", 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1972 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1973 | memcpy(rbuf + 59, versions, sizeof(versions)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1974 | |
| 1975 | return 0; |
| 1976 | } |
| 1977 | |
| 1978 | /** |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1979 | * ata_scsiop_inq_00 - Simulate INQUIRY VPD page 0, list of pages |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1980 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1981 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1982 | * |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1983 | * Returns list of inquiry VPD pages available. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1984 | * |
| 1985 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1986 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1987 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1988 | static unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1989 | { |
| 1990 | const u8 pages[] = { |
| 1991 | 0x00, /* page 0x00, this page */ |
| 1992 | 0x80, /* page 0x80, unit serial no page */ |
Matthew Wilcox | 1e9dbc9 | 2008-06-19 13:13:38 -0600 | [diff] [blame] | 1993 | 0x83, /* page 0x83, device ident page */ |
| 1994 | 0x89, /* page 0x89, ata info page */ |
| 1995 | 0xb1, /* page 0xb1, block device characteristics page */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1996 | }; |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1997 | |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1998 | rbuf[3] = sizeof(pages); /* number of supported VPD pages */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1999 | memcpy(rbuf + 4, pages, sizeof(pages)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2000 | return 0; |
| 2001 | } |
| 2002 | |
| 2003 | /** |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 2004 | * ata_scsiop_inq_80 - Simulate INQUIRY VPD page 80, device serial number |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2005 | * @args: device IDENTIFY data / SCSI command of interest. |
| 2006 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2007 | * |
| 2008 | * Returns ATA device serial number. |
| 2009 | * |
| 2010 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2011 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2012 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2013 | static unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2014 | { |
| 2015 | const u8 hdr[] = { |
| 2016 | 0, |
| 2017 | 0x80, /* this page code */ |
| 2018 | 0, |
Tejun Heo | a0cf733 | 2007-01-02 20:18:49 +0900 | [diff] [blame] | 2019 | ATA_ID_SERNO_LEN, /* page len */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2020 | }; |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2021 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2022 | memcpy(rbuf, hdr, sizeof(hdr)); |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2023 | ata_id_string(args->id, (unsigned char *) &rbuf[4], |
| 2024 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2025 | return 0; |
| 2026 | } |
| 2027 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2028 | /** |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 2029 | * ata_scsiop_inq_83 - Simulate INQUIRY VPD page 83, device identity |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2030 | * @args: device IDENTIFY data / SCSI command of interest. |
| 2031 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2032 | * |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 2033 | * Yields two logical unit device identification designators: |
| 2034 | * - vendor specific ASCII containing the ATA serial number |
| 2035 | * - SAT defined "t10 vendor id based" containing ASCII vendor |
| 2036 | * name ("ATA "), model and serial numbers. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2037 | * |
| 2038 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2039 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2040 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2041 | static unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2042 | { |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 2043 | const int sat_model_serial_desc_len = 68; |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2044 | int num; |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 2045 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2046 | rbuf[1] = 0x83; /* this page code */ |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 2047 | num = 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2048 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2049 | /* piv=0, assoc=lu, code_set=ACSII, designator=vendor */ |
| 2050 | rbuf[num + 0] = 2; |
| 2051 | rbuf[num + 3] = ATA_ID_SERNO_LEN; |
| 2052 | num += 4; |
| 2053 | ata_id_string(args->id, (unsigned char *) rbuf + num, |
| 2054 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); |
| 2055 | num += ATA_ID_SERNO_LEN; |
| 2056 | |
| 2057 | /* SAT defined lu model and serial numbers descriptor */ |
| 2058 | /* piv=0, assoc=lu, code_set=ACSII, designator=t10 vendor id */ |
| 2059 | rbuf[num + 0] = 2; |
| 2060 | rbuf[num + 1] = 1; |
| 2061 | rbuf[num + 3] = sat_model_serial_desc_len; |
| 2062 | num += 4; |
| 2063 | memcpy(rbuf + num, "ATA ", 8); |
| 2064 | num += 8; |
| 2065 | ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_PROD, |
| 2066 | ATA_ID_PROD_LEN); |
| 2067 | num += ATA_ID_PROD_LEN; |
| 2068 | ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_SERNO, |
| 2069 | ATA_ID_SERNO_LEN); |
| 2070 | num += ATA_ID_SERNO_LEN; |
| 2071 | |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 2072 | rbuf[3] = num - 4; /* page len (assume less than 256 bytes) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2073 | return 0; |
| 2074 | } |
| 2075 | |
| 2076 | /** |
Jeff Garzik | ad355b4 | 2007-09-21 20:38:03 -0400 | [diff] [blame] | 2077 | * ata_scsiop_inq_89 - Simulate INQUIRY VPD page 89, ATA info |
| 2078 | * @args: device IDENTIFY data / SCSI command of interest. |
| 2079 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
Jeff Garzik | ad355b4 | 2007-09-21 20:38:03 -0400 | [diff] [blame] | 2080 | * |
| 2081 | * Yields SAT-specified ATA VPD page. |
| 2082 | * |
| 2083 | * LOCKING: |
| 2084 | * spin_lock_irqsave(host lock) |
| 2085 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2086 | static unsigned int ata_scsiop_inq_89(struct ata_scsi_args *args, u8 *rbuf) |
Jeff Garzik | ad355b4 | 2007-09-21 20:38:03 -0400 | [diff] [blame] | 2087 | { |
Jeff Garzik | ad355b4 | 2007-09-21 20:38:03 -0400 | [diff] [blame] | 2088 | struct ata_taskfile tf; |
Jeff Garzik | ad355b4 | 2007-09-21 20:38:03 -0400 | [diff] [blame] | 2089 | |
Jeff Garzik | ad355b4 | 2007-09-21 20:38:03 -0400 | [diff] [blame] | 2090 | memset(&tf, 0, sizeof(tf)); |
| 2091 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2092 | rbuf[1] = 0x89; /* our page code */ |
| 2093 | rbuf[2] = (0x238 >> 8); /* page size fixed at 238h */ |
| 2094 | rbuf[3] = (0x238 & 0xff); |
Jeff Garzik | ad355b4 | 2007-09-21 20:38:03 -0400 | [diff] [blame] | 2095 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2096 | memcpy(&rbuf[8], "linux ", 8); |
| 2097 | memcpy(&rbuf[16], "libata ", 16); |
| 2098 | memcpy(&rbuf[32], DRV_VERSION, 4); |
| 2099 | ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV, 4); |
Jeff Garzik | ad355b4 | 2007-09-21 20:38:03 -0400 | [diff] [blame] | 2100 | |
| 2101 | /* we don't store the ATA device signature, so we fake it */ |
| 2102 | |
| 2103 | tf.command = ATA_DRDY; /* really, this is Status reg */ |
| 2104 | tf.lbal = 0x1; |
| 2105 | tf.nsect = 0x1; |
| 2106 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2107 | ata_tf_to_fis(&tf, 0, 1, &rbuf[36]); /* TODO: PMP? */ |
| 2108 | rbuf[36] = 0x34; /* force D2H Reg FIS (34h) */ |
Jeff Garzik | ad355b4 | 2007-09-21 20:38:03 -0400 | [diff] [blame] | 2109 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2110 | rbuf[56] = ATA_CMD_ID_ATA; |
Jeff Garzik | ad355b4 | 2007-09-21 20:38:03 -0400 | [diff] [blame] | 2111 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2112 | memcpy(&rbuf[60], &args->id[0], 512); |
Jeff Garzik | ad355b4 | 2007-09-21 20:38:03 -0400 | [diff] [blame] | 2113 | return 0; |
| 2114 | } |
| 2115 | |
Matthew Wilcox | 1e9dbc9 | 2008-06-19 13:13:38 -0600 | [diff] [blame] | 2116 | static unsigned int ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf) |
| 2117 | { |
| 2118 | rbuf[1] = 0xb1; |
| 2119 | rbuf[3] = 0x3c; |
| 2120 | if (ata_id_major_version(args->id) > 7) { |
| 2121 | rbuf[4] = args->id[217] >> 8; |
| 2122 | rbuf[5] = args->id[217]; |
| 2123 | rbuf[7] = args->id[168] & 0xf; |
| 2124 | } |
| 2125 | |
| 2126 | return 0; |
| 2127 | } |
| 2128 | |
Jeff Garzik | ad355b4 | 2007-09-21 20:38:03 -0400 | [diff] [blame] | 2129 | /** |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 2130 | * ata_scsiop_noop - Command handler that simply returns success. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2131 | * @args: device IDENTIFY data / SCSI command of interest. |
| 2132 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2133 | * |
| 2134 | * No operation. Simply returns success to caller, to indicate |
| 2135 | * that the caller should successfully complete this SCSI command. |
| 2136 | * |
| 2137 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2138 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2139 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2140 | static unsigned int ata_scsiop_noop(struct ata_scsi_args *args, u8 *rbuf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2141 | { |
| 2142 | VPRINTK("ENTER\n"); |
| 2143 | return 0; |
| 2144 | } |
| 2145 | |
| 2146 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2147 | * ata_msense_caching - Simulate MODE SENSE caching info page |
| 2148 | * @id: device IDENTIFY data |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2149 | * @buf: output buffer |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2150 | * |
| 2151 | * Generate a caching info page, which conditionally indicates |
| 2152 | * write caching to the SCSI layer, depending on device |
| 2153 | * capabilities. |
| 2154 | * |
| 2155 | * LOCKING: |
| 2156 | * None. |
| 2157 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2158 | static unsigned int ata_msense_caching(u16 *id, u8 *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2159 | { |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2160 | memcpy(buf, def_cache_mpage, sizeof(def_cache_mpage)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2161 | if (ata_id_wcache_enabled(id)) |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2162 | buf[2] |= (1 << 2); /* write cache enable */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2163 | if (!ata_id_rahead_enabled(id)) |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2164 | buf[12] |= (1 << 5); /* disable read ahead */ |
| 2165 | return sizeof(def_cache_mpage); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2166 | } |
| 2167 | |
| 2168 | /** |
| 2169 | * ata_msense_ctl_mode - Simulate MODE SENSE control mode page |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2170 | * @buf: output buffer |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2171 | * |
| 2172 | * Generate a generic MODE SENSE control mode page. |
| 2173 | * |
| 2174 | * LOCKING: |
| 2175 | * None. |
| 2176 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2177 | static unsigned int ata_msense_ctl_mode(u8 *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2178 | { |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2179 | memcpy(buf, def_control_mpage, sizeof(def_control_mpage)); |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2180 | return sizeof(def_control_mpage); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2181 | } |
| 2182 | |
| 2183 | /** |
| 2184 | * ata_msense_rw_recovery - Simulate MODE SENSE r/w error recovery page |
Randy Dunlap | ec2a20e | 2008-04-30 12:57:00 -0700 | [diff] [blame] | 2185 | * @buf: output buffer |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2186 | * |
| 2187 | * Generate a generic MODE SENSE r/w error recovery page. |
| 2188 | * |
| 2189 | * LOCKING: |
| 2190 | * None. |
| 2191 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2192 | static unsigned int ata_msense_rw_recovery(u8 *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2193 | { |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2194 | memcpy(buf, def_rw_recovery_mpage, sizeof(def_rw_recovery_mpage)); |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2195 | return sizeof(def_rw_recovery_mpage); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2196 | } |
| 2197 | |
Jens Axboe | 48bdc8e | 2006-01-30 16:09:35 +0100 | [diff] [blame] | 2198 | /* |
| 2199 | * We can turn this into a real blacklist if it's needed, for now just |
| 2200 | * blacklist any Maxtor BANC1G10 revision firmware |
| 2201 | */ |
| 2202 | static int ata_dev_supports_fua(u16 *id) |
| 2203 | { |
Tejun Heo | a0cf733 | 2007-01-02 20:18:49 +0900 | [diff] [blame] | 2204 | unsigned char model[ATA_ID_PROD_LEN + 1], fw[ATA_ID_FW_REV_LEN + 1]; |
Jens Axboe | 48bdc8e | 2006-01-30 16:09:35 +0100 | [diff] [blame] | 2205 | |
Jeff Garzik | c3c013a | 2006-02-27 22:31:19 -0500 | [diff] [blame] | 2206 | if (!libata_fua) |
| 2207 | return 0; |
Jens Axboe | 48bdc8e | 2006-01-30 16:09:35 +0100 | [diff] [blame] | 2208 | if (!ata_id_has_fua(id)) |
| 2209 | return 0; |
| 2210 | |
Tejun Heo | a0cf733 | 2007-01-02 20:18:49 +0900 | [diff] [blame] | 2211 | ata_id_c_string(id, model, ATA_ID_PROD, sizeof(model)); |
| 2212 | ata_id_c_string(id, fw, ATA_ID_FW_REV, sizeof(fw)); |
Jens Axboe | 48bdc8e | 2006-01-30 16:09:35 +0100 | [diff] [blame] | 2213 | |
Tejun Heo | 2e02671 | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 2214 | if (strcmp(model, "Maxtor")) |
Jens Axboe | 48bdc8e | 2006-01-30 16:09:35 +0100 | [diff] [blame] | 2215 | return 1; |
Tejun Heo | 2e02671 | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 2216 | if (strcmp(fw, "BANC1G10")) |
Jens Axboe | 48bdc8e | 2006-01-30 16:09:35 +0100 | [diff] [blame] | 2217 | return 1; |
| 2218 | |
| 2219 | return 0; /* blacklisted */ |
| 2220 | } |
| 2221 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2222 | /** |
| 2223 | * ata_scsiop_mode_sense - Simulate MODE SENSE 6, 10 commands |
| 2224 | * @args: device IDENTIFY data / SCSI command of interest. |
| 2225 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2226 | * |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2227 | * Simulate MODE SENSE commands. Assume this is invoked for direct |
| 2228 | * access devices (e.g. disks) only. There should be no block |
| 2229 | * descriptor for other device types. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2230 | * |
| 2231 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2232 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2233 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2234 | static unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2235 | { |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 2236 | struct ata_device *dev = args->dev; |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2237 | u8 *scsicmd = args->cmd->cmnd, *p = rbuf; |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2238 | const u8 sat_blk_desc[] = { |
| 2239 | 0, 0, 0, 0, /* number of blocks: sat unspecified */ |
| 2240 | 0, |
| 2241 | 0, 0x2, 0x0 /* block length: 512 bytes */ |
| 2242 | }; |
| 2243 | u8 pg, spg; |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2244 | unsigned int ebd, page_control, six_byte; |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 2245 | u8 dpofua; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2246 | |
| 2247 | VPRINTK("ENTER\n"); |
| 2248 | |
| 2249 | six_byte = (scsicmd[0] == MODE_SENSE); |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2250 | ebd = !(scsicmd[1] & 0x8); /* dbd bit inverted == edb */ |
| 2251 | /* |
| 2252 | * LLBA bit in msense(10) ignored (compliant) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2253 | */ |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2254 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2255 | page_control = scsicmd[2] >> 6; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2256 | switch (page_control) { |
| 2257 | case 0: /* current */ |
| 2258 | break; /* supported */ |
| 2259 | case 3: /* saved */ |
| 2260 | goto saving_not_supp; |
| 2261 | case 1: /* changeable */ |
| 2262 | case 2: /* defaults */ |
| 2263 | default: |
| 2264 | goto invalid_fld; |
| 2265 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2266 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2267 | if (six_byte) |
| 2268 | p += 4 + (ebd ? 8 : 0); |
| 2269 | else |
| 2270 | p += 8 + (ebd ? 8 : 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2271 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2272 | pg = scsicmd[2] & 0x3f; |
| 2273 | spg = scsicmd[3]; |
| 2274 | /* |
| 2275 | * No mode subpages supported (yet) but asking for _all_ |
| 2276 | * subpages may be valid |
| 2277 | */ |
| 2278 | if (spg && (spg != ALL_SUB_MPAGES)) |
| 2279 | goto invalid_fld; |
| 2280 | |
| 2281 | switch(pg) { |
| 2282 | case RW_RECOVERY_MPAGE: |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2283 | p += ata_msense_rw_recovery(p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2284 | break; |
| 2285 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2286 | case CACHE_MPAGE: |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2287 | p += ata_msense_caching(args->id, p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2288 | break; |
| 2289 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2290 | case CONTROL_MPAGE: |
| 2291 | p += ata_msense_ctl_mode(p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2292 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2293 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2294 | case ALL_MPAGES: |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2295 | p += ata_msense_rw_recovery(p); |
| 2296 | p += ata_msense_caching(args->id, p); |
| 2297 | p += ata_msense_ctl_mode(p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2298 | break; |
| 2299 | |
| 2300 | default: /* invalid page code */ |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2301 | goto invalid_fld; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2302 | } |
| 2303 | |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 2304 | dpofua = 0; |
Alan Cox | f79d409 | 2006-05-22 16:55:11 +0100 | [diff] [blame] | 2305 | if (ata_dev_supports_fua(args->id) && (dev->flags & ATA_DFLAG_LBA48) && |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 2306 | (!(dev->flags & ATA_DFLAG_PIO) || dev->multi_count)) |
| 2307 | dpofua = 1 << 4; |
| 2308 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2309 | if (six_byte) { |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2310 | rbuf[0] = p - rbuf - 1; |
| 2311 | rbuf[2] |= dpofua; |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2312 | if (ebd) { |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2313 | rbuf[3] = sizeof(sat_blk_desc); |
| 2314 | memcpy(rbuf + 4, sat_blk_desc, sizeof(sat_blk_desc)); |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2315 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2316 | } else { |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2317 | unsigned int output_len = p - rbuf - 2; |
| 2318 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2319 | rbuf[0] = output_len >> 8; |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2320 | rbuf[1] = output_len; |
| 2321 | rbuf[3] |= dpofua; |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2322 | if (ebd) { |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2323 | rbuf[7] = sizeof(sat_blk_desc); |
| 2324 | memcpy(rbuf + 8, sat_blk_desc, sizeof(sat_blk_desc)); |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2325 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2326 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2327 | return 0; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2328 | |
| 2329 | invalid_fld: |
| 2330 | ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x24, 0x0); |
| 2331 | /* "Invalid field in cbd" */ |
| 2332 | return 1; |
| 2333 | |
| 2334 | saving_not_supp: |
| 2335 | ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x39, 0x0); |
| 2336 | /* "Saving parameters not supported" */ |
| 2337 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2338 | } |
| 2339 | |
| 2340 | /** |
| 2341 | * ata_scsiop_read_cap - Simulate READ CAPACITY[ 16] commands |
| 2342 | * @args: device IDENTIFY data / SCSI command of interest. |
| 2343 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2344 | * |
| 2345 | * Simulate READ CAPACITY commands. |
| 2346 | * |
| 2347 | * LOCKING: |
Tejun Heo | 6a36261 | 2006-11-20 11:15:47 +0900 | [diff] [blame] | 2348 | * None. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2349 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2350 | static unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2351 | { |
Tejun Heo | 6a36261 | 2006-11-20 11:15:47 +0900 | [diff] [blame] | 2352 | u64 last_lba = args->dev->n_sectors - 1; /* LBA of the last block */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2353 | |
| 2354 | VPRINTK("ENTER\n"); |
| 2355 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2356 | if (args->cmd->cmnd[0] == READ_CAPACITY) { |
Tejun Heo | 6a36261 | 2006-11-20 11:15:47 +0900 | [diff] [blame] | 2357 | if (last_lba >= 0xffffffffULL) |
| 2358 | last_lba = 0xffffffff; |
Philip Pokorny | 0c144d0 | 2005-05-28 01:24:47 -0700 | [diff] [blame] | 2359 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2360 | /* sector count, 32-bit */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2361 | rbuf[0] = last_lba >> (8 * 3); |
| 2362 | rbuf[1] = last_lba >> (8 * 2); |
| 2363 | rbuf[2] = last_lba >> (8 * 1); |
| 2364 | rbuf[3] = last_lba; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2365 | |
| 2366 | /* sector size */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2367 | rbuf[6] = ATA_SECT_SIZE >> 8; |
| 2368 | rbuf[7] = ATA_SECT_SIZE & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2369 | } else { |
| 2370 | /* sector count, 64-bit */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2371 | rbuf[0] = last_lba >> (8 * 7); |
| 2372 | rbuf[1] = last_lba >> (8 * 6); |
| 2373 | rbuf[2] = last_lba >> (8 * 5); |
| 2374 | rbuf[3] = last_lba >> (8 * 4); |
| 2375 | rbuf[4] = last_lba >> (8 * 3); |
| 2376 | rbuf[5] = last_lba >> (8 * 2); |
| 2377 | rbuf[6] = last_lba >> (8 * 1); |
| 2378 | rbuf[7] = last_lba; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2379 | |
| 2380 | /* sector size */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2381 | rbuf[10] = ATA_SECT_SIZE >> 8; |
| 2382 | rbuf[11] = ATA_SECT_SIZE & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2383 | } |
| 2384 | |
| 2385 | return 0; |
| 2386 | } |
| 2387 | |
| 2388 | /** |
| 2389 | * ata_scsiop_report_luns - Simulate REPORT LUNS command |
| 2390 | * @args: device IDENTIFY data / SCSI command of interest. |
| 2391 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2392 | * |
| 2393 | * Simulate REPORT LUNS command. |
| 2394 | * |
| 2395 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2396 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2397 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2398 | static unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2399 | { |
| 2400 | VPRINTK("ENTER\n"); |
| 2401 | rbuf[3] = 8; /* just one lun, LUN 0, size 8 bytes */ |
| 2402 | |
| 2403 | return 0; |
| 2404 | } |
| 2405 | |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 2406 | static void atapi_sense_complete(struct ata_queued_cmd *qc) |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2407 | { |
Tejun Heo | 74e6c8c | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 2408 | if (qc->err_mask && ((qc->err_mask & AC_ERR_DEV) == 0)) { |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2409 | /* FIXME: not quite right; we don't want the |
| 2410 | * translation of taskfile registers into |
| 2411 | * a sense descriptors, since that's only |
| 2412 | * correct for ATA, not ATAPI |
| 2413 | */ |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 2414 | ata_gen_passthru_sense(qc); |
Tejun Heo | 74e6c8c | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 2415 | } |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2416 | |
| 2417 | qc->scsidone(qc->scsicmd); |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 2418 | ata_qc_free(qc); |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2419 | } |
| 2420 | |
| 2421 | /* is it pointless to prefer PIO for "safety reasons"? */ |
| 2422 | static inline int ata_pio_use_silly(struct ata_port *ap) |
| 2423 | { |
| 2424 | return (ap->flags & ATA_FLAG_PIO_DMA); |
| 2425 | } |
| 2426 | |
| 2427 | static void atapi_request_sense(struct ata_queued_cmd *qc) |
| 2428 | { |
| 2429 | struct ata_port *ap = qc->ap; |
| 2430 | struct scsi_cmnd *cmd = qc->scsicmd; |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2431 | |
| 2432 | DPRINTK("ATAPI request sense\n"); |
| 2433 | |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2434 | /* FIXME: is this needed? */ |
James Bottomley | 7ccd720 | 2008-01-17 11:56:24 -0600 | [diff] [blame] | 2435 | memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2436 | |
Tejun Heo | 127102a | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 2437 | #ifdef CONFIG_ATA_SFF |
James Bottomley | 855d854 | 2008-04-18 13:18:48 -0500 | [diff] [blame] | 2438 | if (ap->ops->sff_tf_read) |
| 2439 | ap->ops->sff_tf_read(ap, &qc->tf); |
Tejun Heo | 127102a | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 2440 | #endif |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2441 | |
| 2442 | /* fill these in, for the case where they are -not- overwritten */ |
| 2443 | cmd->sense_buffer[0] = 0x70; |
| 2444 | cmd->sense_buffer[2] = qc->tf.feature >> 4; |
| 2445 | |
| 2446 | ata_qc_reinit(qc); |
| 2447 | |
Tejun Heo | 93f8fec | 2007-12-05 16:43:01 +0900 | [diff] [blame] | 2448 | /* setup sg table and init transfer direction */ |
akpm@linux-foundation.org | cadb734 | 2008-01-15 16:01:52 -0800 | [diff] [blame] | 2449 | sg_init_one(&qc->sgent, cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE); |
Tejun Heo | 93f8fec | 2007-12-05 16:43:01 +0900 | [diff] [blame] | 2450 | ata_sg_init(qc, &qc->sgent, 1); |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2451 | qc->dma_dir = DMA_FROM_DEVICE; |
| 2452 | |
Tejun Heo | 6e7846e | 2006-02-12 23:32:58 +0900 | [diff] [blame] | 2453 | memset(&qc->cdb, 0, qc->dev->cdb_len); |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2454 | qc->cdb[0] = REQUEST_SENSE; |
| 2455 | qc->cdb[4] = SCSI_SENSE_BUFFERSIZE; |
| 2456 | |
| 2457 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 2458 | qc->tf.command = ATA_CMD_PACKET; |
| 2459 | |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2460 | if (ata_pio_use_silly(ap)) { |
Tejun Heo | 0dc3688 | 2007-12-18 16:34:43 -0500 | [diff] [blame] | 2461 | qc->tf.protocol = ATAPI_PROT_DMA; |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2462 | qc->tf.feature |= ATAPI_PKT_DMA; |
| 2463 | } else { |
Tejun Heo | 0dc3688 | 2007-12-18 16:34:43 -0500 | [diff] [blame] | 2464 | qc->tf.protocol = ATAPI_PROT_PIO; |
Alan Cox | 2db78dd | 2007-10-02 13:53:04 -0700 | [diff] [blame] | 2465 | qc->tf.lbam = SCSI_SENSE_BUFFERSIZE; |
| 2466 | qc->tf.lbah = 0; |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2467 | } |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2468 | qc->nbytes = SCSI_SENSE_BUFFERSIZE; |
| 2469 | |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2470 | qc->complete_fn = atapi_sense_complete; |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2471 | |
Tejun Heo | 8e0e694 | 2006-03-31 20:41:11 +0900 | [diff] [blame] | 2472 | ata_qc_issue(qc); |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2473 | |
| 2474 | DPRINTK("EXIT\n"); |
| 2475 | } |
| 2476 | |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 2477 | static void atapi_qc_complete(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2478 | { |
| 2479 | struct scsi_cmnd *cmd = qc->scsicmd; |
Albert Lee | a22e2eb | 2005-12-05 15:38:02 +0800 | [diff] [blame] | 2480 | unsigned int err_mask = qc->err_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2481 | |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 2482 | VPRINTK("ENTER, err_mask 0x%X\n", err_mask); |
Jeff Garzik | e12669e | 2005-10-05 18:39:23 -0400 | [diff] [blame] | 2483 | |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 2484 | /* handle completion from new EH */ |
| 2485 | if (unlikely(qc->ap->ops->error_handler && |
| 2486 | (err_mask || qc->flags & ATA_QCFLAG_SENSE_VALID))) { |
| 2487 | |
| 2488 | if (!(qc->flags & ATA_QCFLAG_SENSE_VALID)) { |
| 2489 | /* FIXME: not quite right; we don't want the |
| 2490 | * translation of taskfile registers into a |
| 2491 | * sense descriptors, since that's only |
| 2492 | * correct for ATA, not ATAPI |
| 2493 | */ |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 2494 | ata_gen_passthru_sense(qc); |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 2495 | } |
| 2496 | |
Tejun Heo | 22aac08 | 2006-08-08 14:08:59 +0900 | [diff] [blame] | 2497 | /* SCSI EH automatically locks door if sdev->locked is |
| 2498 | * set. Sometimes door lock request continues to |
| 2499 | * fail, for example, when no media is present. This |
| 2500 | * creates a loop - SCSI EH issues door lock which |
| 2501 | * fails and gets invoked again to acquire sense data |
| 2502 | * for the failed command. |
| 2503 | * |
| 2504 | * If door lock fails, always clear sdev->locked to |
| 2505 | * avoid this infinite loop. |
| 2506 | */ |
| 2507 | if (qc->cdb[0] == ALLOW_MEDIUM_REMOVAL) |
| 2508 | qc->dev->sdev->locked = 0; |
| 2509 | |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 2510 | qc->scsicmd->result = SAM_STAT_CHECK_CONDITION; |
| 2511 | qc->scsidone(cmd); |
| 2512 | ata_qc_free(qc); |
| 2513 | return; |
| 2514 | } |
| 2515 | |
| 2516 | /* successful completion or old EH failure path */ |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 2517 | if (unlikely(err_mask & AC_ERR_DEV)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2518 | cmd->result = SAM_STAT_CHECK_CONDITION; |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2519 | atapi_request_sense(qc); |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 2520 | return; |
Tejun Heo | 74e6c8c | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 2521 | } else if (unlikely(err_mask)) { |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 2522 | /* FIXME: not quite right; we don't want the |
| 2523 | * translation of taskfile registers into |
| 2524 | * a sense descriptors, since that's only |
| 2525 | * correct for ATA, not ATAPI |
| 2526 | */ |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 2527 | ata_gen_passthru_sense(qc); |
Tejun Heo | 74e6c8c | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 2528 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2529 | u8 *scsicmd = cmd->cmnd; |
| 2530 | |
Tony Battersby | fd71da4 | 2005-12-21 16:35:44 -0500 | [diff] [blame] | 2531 | if ((scsicmd[0] == INQUIRY) && ((scsicmd[1] & 0x03) == 0)) { |
Jeff Garzik | b445c56 | 2008-02-29 19:10:51 -0500 | [diff] [blame] | 2532 | unsigned long flags; |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2533 | u8 *buf; |
Jeff Garzik | b445c56 | 2008-02-29 19:10:51 -0500 | [diff] [blame] | 2534 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2535 | buf = ata_scsi_rbuf_get(cmd, true, &flags); |
Jeff Garzik | a15dbeb | 2005-10-05 15:02:14 -0400 | [diff] [blame] | 2536 | |
| 2537 | /* ATAPI devices typically report zero for their SCSI version, |
| 2538 | * and sometimes deviate from the spec WRT response data |
| 2539 | * format. If SCSI version is reported as zero like normal, |
| 2540 | * then we make the following fixups: 1) Fake MMC-5 version, |
| 2541 | * to indicate to the Linux scsi midlayer this is a modern |
| 2542 | * device. 2) Ensure response data format / ATAPI information |
| 2543 | * are always correct. |
| 2544 | */ |
Jeff Garzik | a15dbeb | 2005-10-05 15:02:14 -0400 | [diff] [blame] | 2545 | if (buf[2] == 0) { |
| 2546 | buf[2] = 0x5; |
| 2547 | buf[3] = 0x32; |
| 2548 | } |
| 2549 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2550 | ata_scsi_rbuf_put(cmd, true, &flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2551 | } |
Jeff Garzik | a15dbeb | 2005-10-05 15:02:14 -0400 | [diff] [blame] | 2552 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2553 | cmd->result = SAM_STAT_GOOD; |
| 2554 | } |
| 2555 | |
| 2556 | qc->scsidone(cmd); |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 2557 | ata_qc_free(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2558 | } |
| 2559 | /** |
| 2560 | * atapi_xlat - Initialize PACKET taskfile |
| 2561 | * @qc: command structure to be initialized |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2562 | * |
| 2563 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2564 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2565 | * |
| 2566 | * RETURNS: |
| 2567 | * Zero on success, non-zero on failure. |
| 2568 | */ |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 2569 | static unsigned int atapi_xlat(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2570 | { |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2571 | struct scsi_cmnd *scmd = qc->scsicmd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2572 | struct ata_device *dev = qc->dev; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2573 | int nodata = (scmd->sc_data_direction == DMA_NONE); |
Tejun Heo | 5895ef9 | 2008-06-17 12:36:26 +0900 | [diff] [blame] | 2574 | int using_pio = !nodata && (dev->flags & ATA_DFLAG_PIO); |
Alan Cox | 2db78dd | 2007-10-02 13:53:04 -0700 | [diff] [blame] | 2575 | unsigned int nbytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2576 | |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 2577 | memset(qc->cdb, 0, dev->cdb_len); |
| 2578 | memcpy(qc->cdb, scmd->cmnd, scmd->cmd_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2579 | |
| 2580 | qc->complete_fn = atapi_qc_complete; |
| 2581 | |
| 2582 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2583 | if (scmd->sc_data_direction == DMA_TO_DEVICE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2584 | qc->tf.flags |= ATA_TFLAG_WRITE; |
| 2585 | DPRINTK("direction: write\n"); |
| 2586 | } |
| 2587 | |
| 2588 | qc->tf.command = ATA_CMD_PACKET; |
Tejun Heo | aacda37 | 2008-03-18 17:47:43 +0900 | [diff] [blame] | 2589 | ata_qc_set_pc_nbytes(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2590 | |
Tejun Heo | e00f1ff | 2007-06-27 02:47:35 +0900 | [diff] [blame] | 2591 | /* check whether ATAPI DMA is safe */ |
Tejun Heo | 5895ef9 | 2008-06-17 12:36:26 +0900 | [diff] [blame] | 2592 | if (!nodata && !using_pio && atapi_check_dma(qc)) |
Tejun Heo | e00f1ff | 2007-06-27 02:47:35 +0900 | [diff] [blame] | 2593 | using_pio = 1; |
| 2594 | |
Tejun Heo | e190222 | 2007-11-26 20:58:02 +0900 | [diff] [blame] | 2595 | /* Some controller variants snoop this value for Packet |
| 2596 | * transfers to do state machine and FIFO management. Thus we |
| 2597 | * want to set it properly, and for DMA where it is |
| 2598 | * effectively meaningless. |
| 2599 | */ |
Tejun Heo | aacda37 | 2008-03-18 17:47:43 +0900 | [diff] [blame] | 2600 | nbytes = min(ata_qc_raw_nbytes(qc), (unsigned int)63 * 1024); |
Alan Cox | 2db78dd | 2007-10-02 13:53:04 -0700 | [diff] [blame] | 2601 | |
Tejun Heo | e190222 | 2007-11-26 20:58:02 +0900 | [diff] [blame] | 2602 | /* Most ATAPI devices which honor transfer chunk size don't |
| 2603 | * behave according to the spec when odd chunk size which |
| 2604 | * matches the transfer length is specified. If the number of |
| 2605 | * bytes to transfer is 2n+1. According to the spec, what |
| 2606 | * should happen is to indicate that 2n+1 is going to be |
| 2607 | * transferred and transfer 2n+2 bytes where the last byte is |
| 2608 | * padding. |
| 2609 | * |
| 2610 | * In practice, this doesn't happen. ATAPI devices first |
| 2611 | * indicate and transfer 2n bytes and then indicate and |
| 2612 | * transfer 2 bytes where the last byte is padding. |
| 2613 | * |
| 2614 | * This inconsistency confuses several controllers which |
| 2615 | * perform PIO using DMA such as Intel AHCIs and sil3124/32. |
| 2616 | * These controllers use actual number of transferred bytes to |
| 2617 | * update DMA poitner and transfer of 4n+2 bytes make those |
| 2618 | * controller push DMA pointer by 4n+4 bytes because SATA data |
| 2619 | * FISes are aligned to 4 bytes. This causes data corruption |
| 2620 | * and buffer overrun. |
| 2621 | * |
| 2622 | * Always setting nbytes to even number solves this problem |
| 2623 | * because then ATAPI devices don't have to split data at 2n |
| 2624 | * boundaries. |
| 2625 | */ |
| 2626 | if (nbytes & 0x1) |
| 2627 | nbytes++; |
| 2628 | |
Alan Cox | 2db78dd | 2007-10-02 13:53:04 -0700 | [diff] [blame] | 2629 | qc->tf.lbam = (nbytes & 0xFF); |
| 2630 | qc->tf.lbah = (nbytes >> 8); |
| 2631 | |
Tejun Heo | 5895ef9 | 2008-06-17 12:36:26 +0900 | [diff] [blame] | 2632 | if (nodata) |
| 2633 | qc->tf.protocol = ATAPI_PROT_NODATA; |
| 2634 | else if (using_pio) |
| 2635 | qc->tf.protocol = ATAPI_PROT_PIO; |
| 2636 | else { |
Tejun Heo | e00f1ff | 2007-06-27 02:47:35 +0900 | [diff] [blame] | 2637 | /* DMA data xfer */ |
Tejun Heo | 0dc3688 | 2007-12-18 16:34:43 -0500 | [diff] [blame] | 2638 | qc->tf.protocol = ATAPI_PROT_DMA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2639 | qc->tf.feature |= ATAPI_PKT_DMA; |
| 2640 | |
Tejun Heo | 9116300 | 2008-02-21 13:25:50 +0900 | [diff] [blame] | 2641 | if ((dev->flags & ATA_DFLAG_DMADIR) && |
| 2642 | (scmd->sc_data_direction != DMA_TO_DEVICE)) |
Albert Lee | 95de719 | 2006-04-04 10:57:18 +0800 | [diff] [blame] | 2643 | /* some SATA bridges need us to indicate data xfer direction */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2644 | qc->tf.feature |= ATAPI_DMADIR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2645 | } |
| 2646 | |
Alan Cox | 2db78dd | 2007-10-02 13:53:04 -0700 | [diff] [blame] | 2647 | |
| 2648 | /* FIXME: We need to translate 0x05 READ_BLOCK_LIMITS to a MODE_SENSE |
| 2649 | as ATAPI tape drives don't get this right otherwise */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2650 | return 0; |
| 2651 | } |
| 2652 | |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 2653 | static struct ata_device *ata_find_dev(struct ata_port *ap, int devno) |
Tejun Heo | ab5b3a5 | 2006-05-31 18:27:34 +0900 | [diff] [blame] | 2654 | { |
Tejun Heo | 071f44b | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 2655 | if (!sata_pmp_attached(ap)) { |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 2656 | if (likely(devno < ata_link_max_devices(&ap->link))) |
| 2657 | return &ap->link.device[devno]; |
| 2658 | } else { |
| 2659 | if (likely(devno < ap->nr_pmp_links)) |
| 2660 | return &ap->pmp_link[devno].device[0]; |
| 2661 | } |
| 2662 | |
Tejun Heo | ab5b3a5 | 2006-05-31 18:27:34 +0900 | [diff] [blame] | 2663 | return NULL; |
| 2664 | } |
| 2665 | |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 2666 | static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap, |
| 2667 | const struct scsi_device *scsidev) |
Tejun Heo | ab5b3a5 | 2006-05-31 18:27:34 +0900 | [diff] [blame] | 2668 | { |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 2669 | int devno; |
Tejun Heo | ab5b3a5 | 2006-05-31 18:27:34 +0900 | [diff] [blame] | 2670 | |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 2671 | /* skip commands not addressed to targets we simulate */ |
Tejun Heo | 071f44b | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 2672 | if (!sata_pmp_attached(ap)) { |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 2673 | if (unlikely(scsidev->channel || scsidev->lun)) |
| 2674 | return NULL; |
| 2675 | devno = scsidev->id; |
| 2676 | } else { |
| 2677 | if (unlikely(scsidev->id || scsidev->lun)) |
| 2678 | return NULL; |
| 2679 | devno = scsidev->channel; |
| 2680 | } |
| 2681 | |
| 2682 | return ata_find_dev(ap, devno); |
Tejun Heo | ab5b3a5 | 2006-05-31 18:27:34 +0900 | [diff] [blame] | 2683 | } |
| 2684 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2685 | /** |
| 2686 | * ata_scsi_find_dev - lookup ata_device from scsi_cmnd |
| 2687 | * @ap: ATA port to which the device is attached |
| 2688 | * @scsidev: SCSI device from which we derive the ATA device |
| 2689 | * |
| 2690 | * Given various information provided in struct scsi_cmnd, |
| 2691 | * map that onto an ATA bus, and using that mapping |
| 2692 | * determine which ata_device is associated with the |
| 2693 | * SCSI command to be sent. |
| 2694 | * |
| 2695 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2696 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2697 | * |
| 2698 | * RETURNS: |
| 2699 | * Associated ATA device, or %NULL if not found. |
| 2700 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2701 | static struct ata_device * |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 2702 | ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2703 | { |
Tejun Heo | ab5b3a5 | 2006-05-31 18:27:34 +0900 | [diff] [blame] | 2704 | struct ata_device *dev = __ata_scsi_find_dev(ap, scsidev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2705 | |
Tejun Heo | 2486fa5 | 2008-07-31 07:52:40 +0900 | [diff] [blame] | 2706 | if (unlikely(!dev || !ata_dev_enabled(dev))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2707 | return NULL; |
| 2708 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2709 | return dev; |
| 2710 | } |
| 2711 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2712 | /* |
| 2713 | * ata_scsi_map_proto - Map pass-thru protocol value to taskfile value. |
| 2714 | * @byte1: Byte 1 from pass-thru CDB. |
| 2715 | * |
| 2716 | * RETURNS: |
| 2717 | * ATA_PROT_UNKNOWN if mapping failed/unimplemented, protocol otherwise. |
| 2718 | */ |
| 2719 | static u8 |
| 2720 | ata_scsi_map_proto(u8 byte1) |
| 2721 | { |
| 2722 | switch((byte1 & 0x1e) >> 1) { |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 2723 | case 3: /* Non-data */ |
| 2724 | return ATA_PROT_NODATA; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2725 | |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 2726 | case 6: /* DMA */ |
| 2727 | case 10: /* UDMA Data-in */ |
| 2728 | case 11: /* UDMA Data-Out */ |
| 2729 | return ATA_PROT_DMA; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2730 | |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 2731 | case 4: /* PIO Data-in */ |
| 2732 | case 5: /* PIO Data-out */ |
| 2733 | return ATA_PROT_PIO; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2734 | |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 2735 | case 0: /* Hard Reset */ |
| 2736 | case 1: /* SRST */ |
| 2737 | case 8: /* Device Diagnostic */ |
| 2738 | case 9: /* Device Reset */ |
| 2739 | case 7: /* DMA Queued */ |
| 2740 | case 12: /* FPDMA */ |
| 2741 | case 15: /* Return Response Info */ |
| 2742 | default: /* Reserved */ |
| 2743 | break; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2744 | } |
| 2745 | |
| 2746 | return ATA_PROT_UNKNOWN; |
| 2747 | } |
| 2748 | |
| 2749 | /** |
| 2750 | * ata_scsi_pass_thru - convert ATA pass-thru CDB to taskfile |
| 2751 | * @qc: command structure to be initialized |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2752 | * |
| 2753 | * Handles either 12 or 16-byte versions of the CDB. |
| 2754 | * |
| 2755 | * RETURNS: |
| 2756 | * Zero on success, non-zero on failure. |
| 2757 | */ |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 2758 | static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2759 | { |
| 2760 | struct ata_taskfile *tf = &(qc->tf); |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2761 | struct scsi_cmnd *scmd = qc->scsicmd; |
Alan Cox | f79d409 | 2006-05-22 16:55:11 +0100 | [diff] [blame] | 2762 | struct ata_device *dev = qc->dev; |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 2763 | const u8 *cdb = scmd->cmnd; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2764 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2765 | if ((tf->protocol = ata_scsi_map_proto(cdb[1])) == ATA_PROT_UNKNOWN) |
Tejun Heo | 9a40525 | 2005-12-02 11:49:11 +0900 | [diff] [blame] | 2766 | goto invalid_fld; |
Jeff Garzik | 8190bdb | 2006-05-24 01:53:39 -0400 | [diff] [blame] | 2767 | |
Alan Cox | ae8d4ee | 2007-11-04 22:05:49 -0500 | [diff] [blame] | 2768 | /* |
| 2769 | * Filter TPM commands by default. These provide an |
| 2770 | * essentially uncontrolled encrypted "back door" between |
| 2771 | * applications and the disk. Set libata.allow_tpm=1 if you |
| 2772 | * have a real reason for wanting to use them. This ensures |
| 2773 | * that installed software cannot easily mess stuff up without |
| 2774 | * user intent. DVR type users will probably ship with this enabled |
| 2775 | * for movie content management. |
| 2776 | * |
| 2777 | * Note that for ATA8 we can issue a DCS change and DCS freeze lock |
| 2778 | * for this and should do in future but that it is not sufficient as |
| 2779 | * DCS is an optional feature set. Thus we also do the software filter |
| 2780 | * so that we comply with the TC consortium stated goal that the user |
| 2781 | * can turn off TC features of their system. |
| 2782 | */ |
| 2783 | if (tf->command >= 0x5C && tf->command <= 0x5F && !libata_allow_tpm) |
| 2784 | goto invalid_fld; |
| 2785 | |
Alan Cox | f79d409 | 2006-05-22 16:55:11 +0100 | [diff] [blame] | 2786 | /* We may not issue DMA commands if no DMA mode is set */ |
| 2787 | if (tf->protocol == ATA_PROT_DMA && dev->dma_mode == 0) |
| 2788 | goto invalid_fld; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2789 | |
| 2790 | /* |
| 2791 | * 12 and 16 byte CDBs use different offsets to |
| 2792 | * provide the various register values. |
| 2793 | */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2794 | if (cdb[0] == ATA_16) { |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2795 | /* |
| 2796 | * 16-byte CDB - may contain extended commands. |
| 2797 | * |
| 2798 | * If that is the case, copy the upper byte register values. |
| 2799 | */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2800 | if (cdb[1] & 0x01) { |
| 2801 | tf->hob_feature = cdb[3]; |
| 2802 | tf->hob_nsect = cdb[5]; |
| 2803 | tf->hob_lbal = cdb[7]; |
| 2804 | tf->hob_lbam = cdb[9]; |
| 2805 | tf->hob_lbah = cdb[11]; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2806 | tf->flags |= ATA_TFLAG_LBA48; |
| 2807 | } else |
| 2808 | tf->flags &= ~ATA_TFLAG_LBA48; |
| 2809 | |
| 2810 | /* |
| 2811 | * Always copy low byte, device and command registers. |
| 2812 | */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2813 | tf->feature = cdb[4]; |
| 2814 | tf->nsect = cdb[6]; |
| 2815 | tf->lbal = cdb[8]; |
| 2816 | tf->lbam = cdb[10]; |
| 2817 | tf->lbah = cdb[12]; |
| 2818 | tf->device = cdb[13]; |
| 2819 | tf->command = cdb[14]; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2820 | } else { |
| 2821 | /* |
| 2822 | * 12-byte CDB - incapable of extended commands. |
| 2823 | */ |
| 2824 | tf->flags &= ~ATA_TFLAG_LBA48; |
| 2825 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2826 | tf->feature = cdb[3]; |
| 2827 | tf->nsect = cdb[4]; |
| 2828 | tf->lbal = cdb[5]; |
| 2829 | tf->lbam = cdb[6]; |
| 2830 | tf->lbah = cdb[7]; |
| 2831 | tf->device = cdb[8]; |
| 2832 | tf->command = cdb[9]; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2833 | } |
Albert Lee | fa4453c | 2007-06-07 15:52:07 +0800 | [diff] [blame] | 2834 | |
| 2835 | /* enforce correct master/slave bit */ |
| 2836 | tf->device = dev->devno ? |
| 2837 | tf->device | ATA_DEV1 : tf->device & ~ATA_DEV1; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2838 | |
Albert Lee | 1dce589 | 2007-06-07 15:49:22 +0800 | [diff] [blame] | 2839 | /* sanity check for pio multi commands */ |
| 2840 | if ((cdb[1] & 0xe0) && !is_multi_taskfile(tf)) |
| 2841 | goto invalid_fld; |
| 2842 | |
| 2843 | if (is_multi_taskfile(tf)) { |
| 2844 | unsigned int multi_count = 1 << (cdb[1] >> 5); |
| 2845 | |
| 2846 | /* compare the passed through multi_count |
| 2847 | * with the cached multi_count of libata |
| 2848 | */ |
| 2849 | if (multi_count != dev->multi_count) |
| 2850 | ata_dev_printk(dev, KERN_WARNING, |
| 2851 | "invalid multi_count %u ignored\n", |
| 2852 | multi_count); |
Alan Cox | d26fc95 | 2007-07-06 19:13:52 -0400 | [diff] [blame] | 2853 | } |
Albert Lee | 1dce589 | 2007-06-07 15:49:22 +0800 | [diff] [blame] | 2854 | |
Mark Lord | 5a5dbd1 | 2007-03-16 10:22:26 -0400 | [diff] [blame] | 2855 | /* READ/WRITE LONG use a non-standard sect_size */ |
| 2856 | qc->sect_size = ATA_SECT_SIZE; |
| 2857 | switch (tf->command) { |
| 2858 | case ATA_CMD_READ_LONG: |
| 2859 | case ATA_CMD_READ_LONG_ONCE: |
| 2860 | case ATA_CMD_WRITE_LONG: |
| 2861 | case ATA_CMD_WRITE_LONG_ONCE: |
| 2862 | if (tf->protocol != ATA_PROT_PIO || tf->nsect != 1) |
| 2863 | goto invalid_fld; |
Boaz Harrosh | 7120165 | 2007-09-18 17:48:50 +0200 | [diff] [blame] | 2864 | qc->sect_size = scsi_bufflen(scmd); |
Mark Lord | 5a5dbd1 | 2007-03-16 10:22:26 -0400 | [diff] [blame] | 2865 | } |
| 2866 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2867 | /* |
| 2868 | * Filter SET_FEATURES - XFER MODE command -- otherwise, |
| 2869 | * SET_FEATURES - XFER MODE must be preceded/succeeded |
| 2870 | * by an update to hardware-specific registers for each |
| 2871 | * controller (i.e. the reason for ->set_piomode(), |
| 2872 | * ->set_dmamode(), and ->post_set_mode() hooks). |
| 2873 | */ |
| 2874 | if ((tf->command == ATA_CMD_SET_FEATURES) |
| 2875 | && (tf->feature == SETFEATURES_XFER)) |
Tejun Heo | 9a40525 | 2005-12-02 11:49:11 +0900 | [diff] [blame] | 2876 | goto invalid_fld; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2877 | |
| 2878 | /* |
| 2879 | * Set flags so that all registers will be written, |
| 2880 | * and pass on write indication (used for PIO/DMA |
| 2881 | * setup.) |
| 2882 | */ |
| 2883 | tf->flags |= (ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE); |
| 2884 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2885 | if (scmd->sc_data_direction == DMA_TO_DEVICE) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2886 | tf->flags |= ATA_TFLAG_WRITE; |
| 2887 | |
| 2888 | /* |
| 2889 | * Set transfer length. |
| 2890 | * |
| 2891 | * TODO: find out if we need to do more here to |
| 2892 | * cover scatter/gather case. |
| 2893 | */ |
Tejun Heo | aacda37 | 2008-03-18 17:47:43 +0900 | [diff] [blame] | 2894 | ata_qc_set_pc_nbytes(qc); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2895 | |
Tejun Heo | e027bd3 | 2007-10-26 16:19:26 +0900 | [diff] [blame] | 2896 | /* request result TF and be quiet about device error */ |
| 2897 | qc->flags |= ATA_QCFLAG_RESULT_TF | ATA_QCFLAG_QUIET; |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 2898 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2899 | return 0; |
Tejun Heo | 9a40525 | 2005-12-02 11:49:11 +0900 | [diff] [blame] | 2900 | |
| 2901 | invalid_fld: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2902 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x00); |
Tejun Heo | 9a40525 | 2005-12-02 11:49:11 +0900 | [diff] [blame] | 2903 | /* "Invalid field in cdb" */ |
| 2904 | return 1; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2905 | } |
| 2906 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2907 | /** |
| 2908 | * ata_get_xlat_func - check if SCSI to ATA translation is possible |
| 2909 | * @dev: ATA device |
| 2910 | * @cmd: SCSI command opcode to consider |
| 2911 | * |
| 2912 | * Look up the SCSI command given, and determine whether the |
| 2913 | * SCSI command is to be translated or simulated. |
| 2914 | * |
| 2915 | * RETURNS: |
| 2916 | * Pointer to translation function if possible, %NULL if not. |
| 2917 | */ |
| 2918 | |
| 2919 | static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd) |
| 2920 | { |
| 2921 | switch (cmd) { |
| 2922 | case READ_6: |
| 2923 | case READ_10: |
| 2924 | case READ_16: |
| 2925 | |
| 2926 | case WRITE_6: |
| 2927 | case WRITE_10: |
| 2928 | case WRITE_16: |
| 2929 | return ata_scsi_rw_xlat; |
| 2930 | |
| 2931 | case SYNCHRONIZE_CACHE: |
| 2932 | if (ata_try_flush_cache(dev)) |
| 2933 | return ata_scsi_flush_xlat; |
| 2934 | break; |
| 2935 | |
| 2936 | case VERIFY: |
| 2937 | case VERIFY_16: |
| 2938 | return ata_scsi_verify_xlat; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2939 | |
| 2940 | case ATA_12: |
| 2941 | case ATA_16: |
| 2942 | return ata_scsi_pass_thru; |
Jeff Garzik | da61396 | 2005-08-29 19:01:43 -0400 | [diff] [blame] | 2943 | |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 2944 | case START_STOP: |
| 2945 | return ata_scsi_start_stop_xlat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2946 | } |
| 2947 | |
| 2948 | return NULL; |
| 2949 | } |
| 2950 | |
| 2951 | /** |
| 2952 | * ata_scsi_dump_cdb - dump SCSI command contents to dmesg |
| 2953 | * @ap: ATA port to which the command was being sent |
| 2954 | * @cmd: SCSI command to dump |
| 2955 | * |
| 2956 | * Prints the contents of a SCSI command via printk(). |
| 2957 | */ |
| 2958 | |
| 2959 | static inline void ata_scsi_dump_cdb(struct ata_port *ap, |
| 2960 | struct scsi_cmnd *cmd) |
| 2961 | { |
| 2962 | #ifdef ATA_DEBUG |
| 2963 | struct scsi_device *scsidev = cmd->device; |
| 2964 | u8 *scsicmd = cmd->cmnd; |
| 2965 | |
| 2966 | DPRINTK("CDB (%u:%d,%d,%d) %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 2967 | ap->print_id, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2968 | scsidev->channel, scsidev->id, scsidev->lun, |
| 2969 | scsicmd[0], scsicmd[1], scsicmd[2], scsicmd[3], |
| 2970 | scsicmd[4], scsicmd[5], scsicmd[6], scsicmd[7], |
| 2971 | scsicmd[8]); |
| 2972 | #endif |
| 2973 | } |
| 2974 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2975 | static inline int __ata_scsi_queuecmd(struct scsi_cmnd *scmd, |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 2976 | void (*done)(struct scsi_cmnd *), |
| 2977 | struct ata_device *dev) |
Brian King | eb3f0f9 | 2006-03-23 17:30:02 -0600 | [diff] [blame] | 2978 | { |
Mark Lord | baf4fdf | 2007-08-08 01:08:45 +0900 | [diff] [blame] | 2979 | u8 scsi_op = scmd->cmnd[0]; |
| 2980 | ata_xlat_func_t xlat_func; |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 2981 | int rc = 0; |
| 2982 | |
Mark Lord | baf4fdf | 2007-08-08 01:08:45 +0900 | [diff] [blame] | 2983 | if (dev->class == ATA_DEV_ATA) { |
| 2984 | if (unlikely(!scmd->cmd_len || scmd->cmd_len > dev->cdb_len)) |
| 2985 | goto bad_cdb_len; |
| 2986 | |
| 2987 | xlat_func = ata_get_xlat_func(dev, scsi_op); |
| 2988 | } else { |
| 2989 | if (unlikely(!scmd->cmd_len)) |
| 2990 | goto bad_cdb_len; |
| 2991 | |
| 2992 | xlat_func = NULL; |
| 2993 | if (likely((scsi_op != ATA_16) || !atapi_passthru16)) { |
| 2994 | /* relay SCSI command to ATAPI device */ |
Mark Lord | 607126c | 2007-11-15 13:13:59 +0900 | [diff] [blame] | 2995 | int len = COMMAND_SIZE(scsi_op); |
| 2996 | if (unlikely(len > scmd->cmd_len || len > dev->cdb_len)) |
Mark Lord | baf4fdf | 2007-08-08 01:08:45 +0900 | [diff] [blame] | 2997 | goto bad_cdb_len; |
| 2998 | |
| 2999 | xlat_func = atapi_xlat; |
| 3000 | } else { |
| 3001 | /* ATA_16 passthru, treat as an ATA command */ |
| 3002 | if (unlikely(scmd->cmd_len > 16)) |
| 3003 | goto bad_cdb_len; |
| 3004 | |
| 3005 | xlat_func = ata_get_xlat_func(dev, scsi_op); |
| 3006 | } |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 3007 | } |
| 3008 | |
Mark Lord | baf4fdf | 2007-08-08 01:08:45 +0900 | [diff] [blame] | 3009 | if (xlat_func) |
| 3010 | rc = ata_scsi_translate(dev, scmd, done, xlat_func); |
| 3011 | else |
| 3012 | ata_scsi_simulate(dev, scmd, done); |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 3013 | |
| 3014 | return rc; |
Mark Lord | baf4fdf | 2007-08-08 01:08:45 +0900 | [diff] [blame] | 3015 | |
| 3016 | bad_cdb_len: |
| 3017 | DPRINTK("bad CDB len=%u, scsi_op=0x%02x, max=%u\n", |
| 3018 | scmd->cmd_len, scsi_op, dev->cdb_len); |
| 3019 | scmd->result = DID_ERROR << 16; |
| 3020 | done(scmd); |
| 3021 | return 0; |
Brian King | eb3f0f9 | 2006-03-23 17:30:02 -0600 | [diff] [blame] | 3022 | } |
| 3023 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3024 | /** |
| 3025 | * ata_scsi_queuecmd - Issue SCSI cdb to libata-managed device |
| 3026 | * @cmd: SCSI command to be sent |
| 3027 | * @done: Completion function, called when command is complete |
| 3028 | * |
| 3029 | * In some cases, this function translates SCSI commands into |
| 3030 | * ATA taskfiles, and queues the taskfiles to be sent to |
| 3031 | * hardware. In other cases, this function simulates a |
| 3032 | * SCSI device by evaluating and responding to certain |
| 3033 | * SCSI commands. This creates the overall effect of |
| 3034 | * ATA and ATAPI devices appearing as SCSI devices. |
| 3035 | * |
| 3036 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3037 | * Releases scsi-layer-held lock, and obtains host lock. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3038 | * |
| 3039 | * RETURNS: |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 3040 | * Return value from __ata_scsi_queuecmd() if @cmd can be queued, |
| 3041 | * 0 otherwise. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3042 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3043 | int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)) |
| 3044 | { |
| 3045 | struct ata_port *ap; |
| 3046 | struct ata_device *dev; |
| 3047 | struct scsi_device *scsidev = cmd->device; |
Jeff Garzik | 005a5a0 | 2005-10-30 23:31:48 -0500 | [diff] [blame] | 3048 | struct Scsi_Host *shost = scsidev->host; |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 3049 | int rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3050 | |
Jeff Garzik | 35bb94b | 2006-04-11 13:12:34 -0400 | [diff] [blame] | 3051 | ap = ata_shost_to_port(shost); |
Jeff Garzik | 005a5a0 | 2005-10-30 23:31:48 -0500 | [diff] [blame] | 3052 | |
| 3053 | spin_unlock(shost->host_lock); |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 3054 | spin_lock(ap->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3055 | |
| 3056 | ata_scsi_dump_cdb(ap, cmd); |
| 3057 | |
| 3058 | dev = ata_scsi_find_dev(ap, scsidev); |
Brian King | eb3f0f9 | 2006-03-23 17:30:02 -0600 | [diff] [blame] | 3059 | if (likely(dev)) |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 3060 | rc = __ata_scsi_queuecmd(cmd, done, dev); |
Brian King | eb3f0f9 | 2006-03-23 17:30:02 -0600 | [diff] [blame] | 3061 | else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3062 | cmd->result = (DID_BAD_TARGET << 16); |
| 3063 | done(cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3064 | } |
| 3065 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 3066 | spin_unlock(ap->lock); |
Jeff Garzik | 005a5a0 | 2005-10-30 23:31:48 -0500 | [diff] [blame] | 3067 | spin_lock(shost->host_lock); |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 3068 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3069 | } |
| 3070 | |
| 3071 | /** |
| 3072 | * ata_scsi_simulate - simulate SCSI command on ATA device |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 3073 | * @dev: the target device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3074 | * @cmd: SCSI command being sent to device. |
| 3075 | * @done: SCSI command completion function. |
| 3076 | * |
| 3077 | * Interprets and directly executes a select list of SCSI commands |
| 3078 | * that can be handled internally. |
| 3079 | * |
| 3080 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3081 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3082 | */ |
| 3083 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 3084 | void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3085 | void (*done)(struct scsi_cmnd *)) |
| 3086 | { |
| 3087 | struct ata_scsi_args args; |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 3088 | const u8 *scsicmd = cmd->cmnd; |
Jeff Garzik | 4539414 | 2007-09-21 06:23:42 -0400 | [diff] [blame] | 3089 | u8 tmp8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3090 | |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 3091 | args.dev = dev; |
| 3092 | args.id = dev->id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3093 | args.cmd = cmd; |
| 3094 | args.done = done; |
| 3095 | |
| 3096 | switch(scsicmd[0]) { |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3097 | /* TODO: worth improving? */ |
| 3098 | case FORMAT_UNIT: |
| 3099 | ata_scsi_invalid_field(cmd, done); |
| 3100 | break; |
| 3101 | |
| 3102 | case INQUIRY: |
| 3103 | if (scsicmd[1] & 2) /* is CmdDt set? */ |
Jeff Garzik | 00bd020 | 2007-09-21 07:26:08 -0400 | [diff] [blame] | 3104 | ata_scsi_invalid_field(cmd, done); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3105 | else if ((scsicmd[1] & 1) == 0) /* is EVPD clear? */ |
| 3106 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_std); |
| 3107 | else switch (scsicmd[2]) { |
| 3108 | case 0x00: |
| 3109 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_00); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3110 | break; |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3111 | case 0x80: |
| 3112 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_80); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3113 | break; |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3114 | case 0x83: |
| 3115 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_83); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3116 | break; |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3117 | case 0x89: |
| 3118 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_89); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3119 | break; |
Matthew Wilcox | 1e9dbc9 | 2008-06-19 13:13:38 -0600 | [diff] [blame] | 3120 | case 0xb1: |
| 3121 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b1); |
| 3122 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3123 | default: |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3124 | ata_scsi_invalid_field(cmd, done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3125 | break; |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3126 | } |
| 3127 | break; |
| 3128 | |
| 3129 | case MODE_SENSE: |
| 3130 | case MODE_SENSE_10: |
| 3131 | ata_scsi_rbuf_fill(&args, ata_scsiop_mode_sense); |
| 3132 | break; |
| 3133 | |
| 3134 | case MODE_SELECT: /* unconditionally return */ |
| 3135 | case MODE_SELECT_10: /* bad-field-in-cdb */ |
| 3136 | ata_scsi_invalid_field(cmd, done); |
| 3137 | break; |
| 3138 | |
| 3139 | case READ_CAPACITY: |
| 3140 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); |
| 3141 | break; |
| 3142 | |
| 3143 | case SERVICE_ACTION_IN: |
| 3144 | if ((scsicmd[1] & 0x1f) == SAI_READ_CAPACITY_16) |
| 3145 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); |
| 3146 | else |
| 3147 | ata_scsi_invalid_field(cmd, done); |
| 3148 | break; |
| 3149 | |
| 3150 | case REPORT_LUNS: |
| 3151 | ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns); |
| 3152 | break; |
| 3153 | |
| 3154 | case REQUEST_SENSE: |
| 3155 | ata_scsi_set_sense(cmd, 0, 0, 0); |
| 3156 | cmd->result = (DRIVER_SENSE << 24); |
| 3157 | done(cmd); |
| 3158 | break; |
| 3159 | |
| 3160 | /* if we reach this, then writeback caching is disabled, |
| 3161 | * turning this into a no-op. |
| 3162 | */ |
| 3163 | case SYNCHRONIZE_CACHE: |
| 3164 | /* fall through */ |
| 3165 | |
| 3166 | /* no-op's, complete with success */ |
| 3167 | case REZERO_UNIT: |
| 3168 | case SEEK_6: |
| 3169 | case SEEK_10: |
| 3170 | case TEST_UNIT_READY: |
| 3171 | ata_scsi_rbuf_fill(&args, ata_scsiop_noop); |
| 3172 | break; |
| 3173 | |
| 3174 | case SEND_DIAGNOSTIC: |
| 3175 | tmp8 = scsicmd[1] & ~(1 << 3); |
| 3176 | if ((tmp8 == 0x4) && (!scsicmd[3]) && (!scsicmd[4])) |
| 3177 | ata_scsi_rbuf_fill(&args, ata_scsiop_noop); |
| 3178 | else |
| 3179 | ata_scsi_invalid_field(cmd, done); |
| 3180 | break; |
| 3181 | |
| 3182 | /* all other commands */ |
| 3183 | default: |
| 3184 | ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x20, 0x0); |
| 3185 | /* "Invalid command operation code" */ |
| 3186 | done(cmd); |
| 3187 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3188 | } |
| 3189 | } |
| 3190 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3191 | int ata_scsi_add_hosts(struct ata_host *host, struct scsi_host_template *sht) |
| 3192 | { |
| 3193 | int i, rc; |
| 3194 | |
| 3195 | for (i = 0; i < host->n_ports; i++) { |
| 3196 | struct ata_port *ap = host->ports[i]; |
| 3197 | struct Scsi_Host *shost; |
| 3198 | |
| 3199 | rc = -ENOMEM; |
| 3200 | shost = scsi_host_alloc(sht, sizeof(struct ata_port *)); |
| 3201 | if (!shost) |
| 3202 | goto err_alloc; |
| 3203 | |
| 3204 | *(struct ata_port **)&shost->hostdata[0] = ap; |
| 3205 | ap->scsi_host = shost; |
| 3206 | |
| 3207 | shost->transportt = &ata_scsi_transport_template; |
| 3208 | shost->unique_id = ap->print_id; |
| 3209 | shost->max_id = 16; |
| 3210 | shost->max_lun = 1; |
| 3211 | shost->max_channel = 1; |
| 3212 | shost->max_cmd_len = 16; |
| 3213 | |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 3214 | /* Schedule policy is determined by ->qc_defer() |
| 3215 | * callback and it needs to see every deferred qc. |
| 3216 | * Set host_blocked to 1 to prevent SCSI midlayer from |
| 3217 | * automatically deferring requests. |
| 3218 | */ |
| 3219 | shost->max_host_blocked = 1; |
| 3220 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3221 | rc = scsi_add_host(ap->scsi_host, ap->host->dev); |
| 3222 | if (rc) |
| 3223 | goto err_add; |
| 3224 | } |
| 3225 | |
| 3226 | return 0; |
| 3227 | |
| 3228 | err_add: |
| 3229 | scsi_host_put(host->ports[i]->scsi_host); |
| 3230 | err_alloc: |
| 3231 | while (--i >= 0) { |
| 3232 | struct Scsi_Host *shost = host->ports[i]->scsi_host; |
| 3233 | |
| 3234 | scsi_remove_host(shost); |
| 3235 | scsi_host_put(shost); |
| 3236 | } |
| 3237 | return rc; |
| 3238 | } |
| 3239 | |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3240 | void ata_scsi_scan_host(struct ata_port *ap, int sync) |
Jeff Garzik | 644dd0c | 2005-10-03 15:55:19 -0400 | [diff] [blame] | 3241 | { |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3242 | int tries = 5; |
| 3243 | struct ata_device *last_failed_dev = NULL; |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3244 | struct ata_link *link; |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3245 | struct ata_device *dev; |
Jeff Garzik | 644dd0c | 2005-10-03 15:55:19 -0400 | [diff] [blame] | 3246 | |
Tejun Heo | 198e0fe | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 3247 | if (ap->flags & ATA_FLAG_DISABLED) |
Jeff Garzik | 644dd0c | 2005-10-03 15:55:19 -0400 | [diff] [blame] | 3248 | return; |
| 3249 | |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3250 | repeat: |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3251 | ata_port_for_each_link(link, ap) { |
| 3252 | ata_link_for_each_dev(dev, link) { |
| 3253 | struct scsi_device *sdev; |
| 3254 | int channel = 0, id = 0; |
Jeff Garzik | 3f19ee8 | 2005-10-03 21:36:41 -0400 | [diff] [blame] | 3255 | |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3256 | if (!ata_dev_enabled(dev) || dev->sdev) |
| 3257 | continue; |
Tejun Heo | 3edebac | 2006-05-31 18:27:40 +0900 | [diff] [blame] | 3258 | |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3259 | if (ata_is_host_link(link)) |
| 3260 | id = dev->devno; |
| 3261 | else |
| 3262 | channel = link->pmp; |
| 3263 | |
| 3264 | sdev = __scsi_add_device(ap->scsi_host, channel, id, 0, |
| 3265 | NULL); |
| 3266 | if (!IS_ERR(sdev)) { |
| 3267 | dev->sdev = sdev; |
| 3268 | scsi_device_put(sdev); |
| 3269 | } |
Tejun Heo | 3edebac | 2006-05-31 18:27:40 +0900 | [diff] [blame] | 3270 | } |
Jeff Garzik | 3f19ee8 | 2005-10-03 21:36:41 -0400 | [diff] [blame] | 3271 | } |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3272 | |
| 3273 | /* If we scanned while EH was in progress or allocation |
| 3274 | * failure occurred, scan would have failed silently. Check |
| 3275 | * whether all devices are attached. |
| 3276 | */ |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3277 | ata_port_for_each_link(link, ap) { |
| 3278 | ata_link_for_each_dev(dev, link) { |
| 3279 | if (ata_dev_enabled(dev) && !dev->sdev) |
| 3280 | goto exit_loop; |
| 3281 | } |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3282 | } |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3283 | exit_loop: |
| 3284 | if (!link) |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3285 | return; |
| 3286 | |
| 3287 | /* we're missing some SCSI devices */ |
| 3288 | if (sync) { |
| 3289 | /* If caller requested synchrnous scan && we've made |
| 3290 | * any progress, sleep briefly and repeat. |
| 3291 | */ |
| 3292 | if (dev != last_failed_dev) { |
| 3293 | msleep(100); |
| 3294 | last_failed_dev = dev; |
| 3295 | goto repeat; |
| 3296 | } |
| 3297 | |
| 3298 | /* We might be failing to detect boot device, give it |
| 3299 | * a few more chances. |
| 3300 | */ |
| 3301 | if (--tries) { |
| 3302 | msleep(100); |
| 3303 | goto repeat; |
| 3304 | } |
| 3305 | |
| 3306 | ata_port_printk(ap, KERN_ERR, "WARNING: synchronous SCSI scan " |
| 3307 | "failed without making any progress,\n" |
| 3308 | " switching to async\n"); |
| 3309 | } |
| 3310 | |
| 3311 | queue_delayed_work(ata_aux_wq, &ap->hotplug_task, |
| 3312 | round_jiffies_relative(HZ)); |
Jeff Garzik | 644dd0c | 2005-10-03 15:55:19 -0400 | [diff] [blame] | 3313 | } |
Tejun Heo | 0ea035a | 2006-05-31 18:28:01 +0900 | [diff] [blame] | 3314 | |
| 3315 | /** |
| 3316 | * ata_scsi_offline_dev - offline attached SCSI device |
| 3317 | * @dev: ATA device to offline attached SCSI device for |
| 3318 | * |
| 3319 | * This function is called from ata_eh_hotplug() and responsible |
| 3320 | * for taking the SCSI device attached to @dev offline. This |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3321 | * function is called with host lock which protects dev->sdev |
Tejun Heo | 0ea035a | 2006-05-31 18:28:01 +0900 | [diff] [blame] | 3322 | * against clearing. |
| 3323 | * |
| 3324 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3325 | * spin_lock_irqsave(host lock) |
Tejun Heo | 0ea035a | 2006-05-31 18:28:01 +0900 | [diff] [blame] | 3326 | * |
| 3327 | * RETURNS: |
| 3328 | * 1 if attached SCSI device exists, 0 otherwise. |
| 3329 | */ |
| 3330 | int ata_scsi_offline_dev(struct ata_device *dev) |
| 3331 | { |
| 3332 | if (dev->sdev) { |
| 3333 | scsi_device_set_state(dev->sdev, SDEV_OFFLINE); |
| 3334 | return 1; |
| 3335 | } |
| 3336 | return 0; |
| 3337 | } |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3338 | |
| 3339 | /** |
| 3340 | * ata_scsi_remove_dev - remove attached SCSI device |
| 3341 | * @dev: ATA device to remove attached SCSI device for |
| 3342 | * |
| 3343 | * This function is called from ata_eh_scsi_hotplug() and |
| 3344 | * responsible for removing the SCSI device attached to @dev. |
| 3345 | * |
| 3346 | * LOCKING: |
| 3347 | * Kernel thread context (may sleep). |
| 3348 | */ |
| 3349 | static void ata_scsi_remove_dev(struct ata_device *dev) |
| 3350 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 3351 | struct ata_port *ap = dev->link->ap; |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3352 | struct scsi_device *sdev; |
| 3353 | unsigned long flags; |
| 3354 | |
| 3355 | /* Alas, we need to grab scan_mutex to ensure SCSI device |
| 3356 | * state doesn't change underneath us and thus |
| 3357 | * scsi_device_get() always succeeds. The mutex locking can |
| 3358 | * be removed if there is __scsi_device_get() interface which |
| 3359 | * increments reference counts regardless of device state. |
| 3360 | */ |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3361 | mutex_lock(&ap->scsi_host->scan_mutex); |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 3362 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3363 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3364 | /* clearing dev->sdev is protected by host lock */ |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3365 | sdev = dev->sdev; |
| 3366 | dev->sdev = NULL; |
| 3367 | |
| 3368 | if (sdev) { |
| 3369 | /* If user initiated unplug races with us, sdev can go |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3370 | * away underneath us after the host lock and |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3371 | * scan_mutex are released. Hold onto it. |
| 3372 | */ |
| 3373 | if (scsi_device_get(sdev) == 0) { |
| 3374 | /* The following ensures the attached sdev is |
| 3375 | * offline on return from ata_scsi_offline_dev() |
| 3376 | * regardless it wins or loses the race |
| 3377 | * against this function. |
| 3378 | */ |
| 3379 | scsi_device_set_state(sdev, SDEV_OFFLINE); |
| 3380 | } else { |
| 3381 | WARN_ON(1); |
| 3382 | sdev = NULL; |
| 3383 | } |
| 3384 | } |
| 3385 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 3386 | spin_unlock_irqrestore(ap->lock, flags); |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3387 | mutex_unlock(&ap->scsi_host->scan_mutex); |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3388 | |
| 3389 | if (sdev) { |
| 3390 | ata_dev_printk(dev, KERN_INFO, "detaching (SCSI %s)\n", |
| 3391 | sdev->sdev_gendev.bus_id); |
| 3392 | |
| 3393 | scsi_remove_device(sdev); |
| 3394 | scsi_device_put(sdev); |
| 3395 | } |
| 3396 | } |
| 3397 | |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3398 | static void ata_scsi_handle_link_detach(struct ata_link *link) |
| 3399 | { |
| 3400 | struct ata_port *ap = link->ap; |
| 3401 | struct ata_device *dev; |
| 3402 | |
| 3403 | ata_link_for_each_dev(dev, link) { |
| 3404 | unsigned long flags; |
| 3405 | |
| 3406 | if (!(dev->flags & ATA_DFLAG_DETACHED)) |
| 3407 | continue; |
| 3408 | |
| 3409 | spin_lock_irqsave(ap->lock, flags); |
| 3410 | dev->flags &= ~ATA_DFLAG_DETACHED; |
| 3411 | spin_unlock_irqrestore(ap->lock, flags); |
| 3412 | |
| 3413 | ata_scsi_remove_dev(dev); |
| 3414 | } |
| 3415 | } |
| 3416 | |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3417 | /** |
Kristen Carlson Accardi | 2f29496 | 2007-08-15 04:11:25 -0400 | [diff] [blame] | 3418 | * ata_scsi_media_change_notify - send media change event |
Randy Dunlap | c5d0e6a | 2007-10-15 17:29:46 -0700 | [diff] [blame] | 3419 | * @dev: Pointer to the disk device with media change event |
Kristen Carlson Accardi | 2f29496 | 2007-08-15 04:11:25 -0400 | [diff] [blame] | 3420 | * |
| 3421 | * Tell the block layer to send a media change notification |
| 3422 | * event. |
| 3423 | * |
| 3424 | * LOCKING: |
Tejun Heo | 854c73a | 2007-09-23 13:14:11 +0900 | [diff] [blame] | 3425 | * spin_lock_irqsave(host lock) |
Kristen Carlson Accardi | 2f29496 | 2007-08-15 04:11:25 -0400 | [diff] [blame] | 3426 | */ |
Tejun Heo | 854c73a | 2007-09-23 13:14:11 +0900 | [diff] [blame] | 3427 | void ata_scsi_media_change_notify(struct ata_device *dev) |
Kristen Carlson Accardi | 2f29496 | 2007-08-15 04:11:25 -0400 | [diff] [blame] | 3428 | { |
Tejun Heo | 854c73a | 2007-09-23 13:14:11 +0900 | [diff] [blame] | 3429 | if (dev->sdev) |
Jeff Garzik | f26792d | 2007-10-29 17:18:39 -0400 | [diff] [blame] | 3430 | sdev_evt_send_simple(dev->sdev, SDEV_EVT_MEDIA_CHANGE, |
| 3431 | GFP_ATOMIC); |
Kristen Carlson Accardi | 2f29496 | 2007-08-15 04:11:25 -0400 | [diff] [blame] | 3432 | } |
Kristen Carlson Accardi | 2f29496 | 2007-08-15 04:11:25 -0400 | [diff] [blame] | 3433 | |
| 3434 | /** |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3435 | * ata_scsi_hotplug - SCSI part of hotplug |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 3436 | * @work: Pointer to ATA port to perform SCSI hotplug on |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3437 | * |
| 3438 | * Perform SCSI part of hotplug. It's executed from a separate |
| 3439 | * workqueue after EH completes. This is necessary because SCSI |
| 3440 | * hot plugging requires working EH and hot unplugging is |
| 3441 | * synchronized with hot plugging with a mutex. |
| 3442 | * |
| 3443 | * LOCKING: |
| 3444 | * Kernel thread context (may sleep). |
| 3445 | */ |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 3446 | void ata_scsi_hotplug(struct work_struct *work) |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3447 | { |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 3448 | struct ata_port *ap = |
| 3449 | container_of(work, struct ata_port, hotplug_task.work); |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3450 | int i; |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3451 | |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 3452 | if (ap->pflags & ATA_PFLAG_UNLOADING) { |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3453 | DPRINTK("ENTER/EXIT - unloading\n"); |
| 3454 | return; |
| 3455 | } |
| 3456 | |
| 3457 | DPRINTK("ENTER\n"); |
| 3458 | |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3459 | /* Unplug detached devices. We cannot use link iterator here |
| 3460 | * because PMP links have to be scanned even if PMP is |
| 3461 | * currently not attached. Iterate manually. |
| 3462 | */ |
| 3463 | ata_scsi_handle_link_detach(&ap->link); |
| 3464 | if (ap->pmp_link) |
| 3465 | for (i = 0; i < SATA_PMP_MAX_PORTS; i++) |
| 3466 | ata_scsi_handle_link_detach(&ap->pmp_link[i]); |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3467 | |
| 3468 | /* scan for new ones */ |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3469 | ata_scsi_scan_host(ap, 0); |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3470 | |
| 3471 | DPRINTK("EXIT\n"); |
| 3472 | } |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3473 | |
| 3474 | /** |
| 3475 | * ata_scsi_user_scan - indication for user-initiated bus scan |
| 3476 | * @shost: SCSI host to scan |
| 3477 | * @channel: Channel to scan |
| 3478 | * @id: ID to scan |
| 3479 | * @lun: LUN to scan |
| 3480 | * |
| 3481 | * This function is called when user explicitly requests bus |
| 3482 | * scan. Set probe pending flag and invoke EH. |
| 3483 | * |
| 3484 | * LOCKING: |
| 3485 | * SCSI layer (we don't care) |
| 3486 | * |
| 3487 | * RETURNS: |
| 3488 | * Zero. |
| 3489 | */ |
| 3490 | static int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel, |
| 3491 | unsigned int id, unsigned int lun) |
| 3492 | { |
| 3493 | struct ata_port *ap = ata_shost_to_port(shost); |
| 3494 | unsigned long flags; |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3495 | int devno, rc = 0; |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3496 | |
| 3497 | if (!ap->ops->error_handler) |
| 3498 | return -EOPNOTSUPP; |
| 3499 | |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3500 | if (lun != SCAN_WILD_CARD && lun) |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3501 | return -EINVAL; |
| 3502 | |
Tejun Heo | 071f44b | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 3503 | if (!sata_pmp_attached(ap)) { |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3504 | if (channel != SCAN_WILD_CARD && channel) |
| 3505 | return -EINVAL; |
| 3506 | devno = id; |
| 3507 | } else { |
| 3508 | if (id != SCAN_WILD_CARD && id) |
| 3509 | return -EINVAL; |
| 3510 | devno = channel; |
| 3511 | } |
| 3512 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 3513 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3514 | |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3515 | if (devno == SCAN_WILD_CARD) { |
| 3516 | struct ata_link *link; |
| 3517 | |
| 3518 | ata_port_for_each_link(link, ap) { |
| 3519 | struct ata_eh_info *ehi = &link->eh_info; |
Tejun Heo | b558edd | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 3520 | ehi->probe_mask |= ATA_ALL_DEVICES; |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 3521 | ehi->action |= ATA_EH_RESET; |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3522 | } |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3523 | } else { |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3524 | struct ata_device *dev = ata_find_dev(ap, devno); |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3525 | |
| 3526 | if (dev) { |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3527 | struct ata_eh_info *ehi = &dev->link->eh_info; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 3528 | ehi->probe_mask |= 1 << dev->devno; |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 3529 | ehi->action |= ATA_EH_RESET; |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3530 | } else |
| 3531 | rc = -EINVAL; |
| 3532 | } |
| 3533 | |
Tejun Heo | 309afcb | 2006-09-30 18:07:17 +0900 | [diff] [blame] | 3534 | if (rc == 0) { |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3535 | ata_port_schedule_eh(ap); |
Tejun Heo | 309afcb | 2006-09-30 18:07:17 +0900 | [diff] [blame] | 3536 | spin_unlock_irqrestore(ap->lock, flags); |
| 3537 | ata_port_wait_eh(ap); |
| 3538 | } else |
| 3539 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3540 | |
| 3541 | return rc; |
| 3542 | } |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3543 | |
| 3544 | /** |
Tejun Heo | d017126 | 2006-06-12 22:51:14 +0900 | [diff] [blame] | 3545 | * ata_scsi_dev_rescan - initiate scsi_rescan_device() |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 3546 | * @work: Pointer to ATA port to perform scsi_rescan_device() |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3547 | * |
Tejun Heo | d017126 | 2006-06-12 22:51:14 +0900 | [diff] [blame] | 3548 | * After ATA pass thru (SAT) commands are executed successfully, |
| 3549 | * libata need to propagate the changes to SCSI layer. This |
| 3550 | * function must be executed from ata_aux_wq such that sdev |
| 3551 | * attach/detach don't race with rescan. |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3552 | * |
Tejun Heo | d017126 | 2006-06-12 22:51:14 +0900 | [diff] [blame] | 3553 | * LOCKING: |
| 3554 | * Kernel thread context (may sleep). |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3555 | */ |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 3556 | void ata_scsi_dev_rescan(struct work_struct *work) |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3557 | { |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 3558 | struct ata_port *ap = |
| 3559 | container_of(work, struct ata_port, scsi_rescan_task); |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3560 | struct ata_link *link; |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3561 | struct ata_device *dev; |
Tejun Heo | f84e7e4 | 2006-11-22 11:21:31 +0900 | [diff] [blame] | 3562 | unsigned long flags; |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3563 | |
Tejun Heo | f84e7e4 | 2006-11-22 11:21:31 +0900 | [diff] [blame] | 3564 | spin_lock_irqsave(ap->lock, flags); |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3565 | |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3566 | ata_port_for_each_link(link, ap) { |
| 3567 | ata_link_for_each_dev(dev, link) { |
| 3568 | struct scsi_device *sdev = dev->sdev; |
Tejun Heo | f84e7e4 | 2006-11-22 11:21:31 +0900 | [diff] [blame] | 3569 | |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3570 | if (!ata_dev_enabled(dev) || !sdev) |
| 3571 | continue; |
| 3572 | if (scsi_device_get(sdev)) |
| 3573 | continue; |
Tejun Heo | f84e7e4 | 2006-11-22 11:21:31 +0900 | [diff] [blame] | 3574 | |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3575 | spin_unlock_irqrestore(ap->lock, flags); |
| 3576 | scsi_rescan_device(&(sdev->sdev_gendev)); |
| 3577 | scsi_device_put(sdev); |
| 3578 | spin_lock_irqsave(ap->lock, flags); |
| 3579 | } |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3580 | } |
Tejun Heo | f84e7e4 | 2006-11-22 11:21:31 +0900 | [diff] [blame] | 3581 | |
| 3582 | spin_unlock_irqrestore(ap->lock, flags); |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3583 | } |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3584 | |
| 3585 | /** |
| 3586 | * ata_sas_port_alloc - Allocate port for a SAS attached SATA device |
Jeff Garzik | 4f93137 | 2006-09-29 05:07:25 -0400 | [diff] [blame] | 3587 | * @host: ATA host container for all SAS ports |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3588 | * @port_info: Information from low-level host driver |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3589 | * @shost: SCSI host that the scsi device is attached to |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3590 | * |
| 3591 | * LOCKING: |
| 3592 | * PCI/etc. bus probe sem. |
| 3593 | * |
| 3594 | * RETURNS: |
| 3595 | * ata_port pointer on success / NULL on failure. |
| 3596 | */ |
| 3597 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3598 | struct ata_port *ata_sas_port_alloc(struct ata_host *host, |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3599 | struct ata_port_info *port_info, |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3600 | struct Scsi_Host *shost) |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3601 | { |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3602 | struct ata_port *ap; |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3603 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3604 | ap = ata_port_alloc(host); |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3605 | if (!ap) |
| 3606 | return NULL; |
| 3607 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3608 | ap->port_no = 0; |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3609 | ap->lock = shost->host_lock; |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3610 | ap->pio_mask = port_info->pio_mask; |
| 3611 | ap->mwdma_mask = port_info->mwdma_mask; |
| 3612 | ap->udma_mask = port_info->udma_mask; |
| 3613 | ap->flags |= port_info->flags; |
| 3614 | ap->ops = port_info->port_ops; |
| 3615 | ap->cbl = ATA_CBL_SATA; |
| 3616 | |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3617 | return ap; |
| 3618 | } |
| 3619 | EXPORT_SYMBOL_GPL(ata_sas_port_alloc); |
| 3620 | |
| 3621 | /** |
| 3622 | * ata_sas_port_start - Set port up for dma. |
| 3623 | * @ap: Port to initialize |
| 3624 | * |
| 3625 | * Called just after data structures for each port are |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 3626 | * initialized. |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3627 | * |
| 3628 | * May be used as the port_start() entry in ata_port_operations. |
| 3629 | * |
| 3630 | * LOCKING: |
| 3631 | * Inherited from caller. |
| 3632 | */ |
| 3633 | int ata_sas_port_start(struct ata_port *ap) |
| 3634 | { |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 3635 | return 0; |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3636 | } |
| 3637 | EXPORT_SYMBOL_GPL(ata_sas_port_start); |
| 3638 | |
| 3639 | /** |
| 3640 | * ata_port_stop - Undo ata_sas_port_start() |
| 3641 | * @ap: Port to shut down |
| 3642 | * |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3643 | * May be used as the port_stop() entry in ata_port_operations. |
| 3644 | * |
| 3645 | * LOCKING: |
| 3646 | * Inherited from caller. |
| 3647 | */ |
| 3648 | |
| 3649 | void ata_sas_port_stop(struct ata_port *ap) |
| 3650 | { |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3651 | } |
| 3652 | EXPORT_SYMBOL_GPL(ata_sas_port_stop); |
| 3653 | |
| 3654 | /** |
| 3655 | * ata_sas_port_init - Initialize a SATA device |
| 3656 | * @ap: SATA port to initialize |
| 3657 | * |
| 3658 | * LOCKING: |
| 3659 | * PCI/etc. bus probe sem. |
| 3660 | * |
| 3661 | * RETURNS: |
| 3662 | * Zero on success, non-zero on error. |
| 3663 | */ |
| 3664 | |
| 3665 | int ata_sas_port_init(struct ata_port *ap) |
| 3666 | { |
| 3667 | int rc = ap->ops->port_start(ap); |
| 3668 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3669 | if (!rc) { |
| 3670 | ap->print_id = ata_print_id++; |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3671 | rc = ata_bus_probe(ap); |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3672 | } |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3673 | |
| 3674 | return rc; |
| 3675 | } |
| 3676 | EXPORT_SYMBOL_GPL(ata_sas_port_init); |
| 3677 | |
| 3678 | /** |
| 3679 | * ata_sas_port_destroy - Destroy a SATA port allocated by ata_sas_port_alloc |
| 3680 | * @ap: SATA port to destroy |
| 3681 | * |
| 3682 | */ |
| 3683 | |
| 3684 | void ata_sas_port_destroy(struct ata_port *ap) |
| 3685 | { |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 3686 | if (ap->ops->port_stop) |
| 3687 | ap->ops->port_stop(ap); |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3688 | kfree(ap); |
| 3689 | } |
| 3690 | EXPORT_SYMBOL_GPL(ata_sas_port_destroy); |
| 3691 | |
| 3692 | /** |
| 3693 | * ata_sas_slave_configure - Default slave_config routine for libata devices |
| 3694 | * @sdev: SCSI device to configure |
| 3695 | * @ap: ATA port to which SCSI device is attached |
| 3696 | * |
| 3697 | * RETURNS: |
| 3698 | * Zero. |
| 3699 | */ |
| 3700 | |
| 3701 | int ata_sas_slave_configure(struct scsi_device *sdev, struct ata_port *ap) |
| 3702 | { |
| 3703 | ata_scsi_sdev_config(sdev); |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 3704 | ata_scsi_dev_config(sdev, ap->link.device); |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3705 | return 0; |
| 3706 | } |
| 3707 | EXPORT_SYMBOL_GPL(ata_sas_slave_configure); |
| 3708 | |
| 3709 | /** |
| 3710 | * ata_sas_queuecmd - Issue SCSI cdb to libata-managed device |
| 3711 | * @cmd: SCSI command to be sent |
| 3712 | * @done: Completion function, called when command is complete |
| 3713 | * @ap: ATA port to which the command is being sent |
| 3714 | * |
| 3715 | * RETURNS: |
Brian King | 08475a1 | 2006-11-20 13:51:56 -0600 | [diff] [blame] | 3716 | * Return value from __ata_scsi_queuecmd() if @cmd can be queued, |
| 3717 | * 0 otherwise. |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3718 | */ |
| 3719 | |
| 3720 | int ata_sas_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), |
| 3721 | struct ata_port *ap) |
| 3722 | { |
Brian King | 08475a1 | 2006-11-20 13:51:56 -0600 | [diff] [blame] | 3723 | int rc = 0; |
| 3724 | |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3725 | ata_scsi_dump_cdb(ap, cmd); |
| 3726 | |
Tejun Heo | 2486fa5 | 2008-07-31 07:52:40 +0900 | [diff] [blame] | 3727 | if (likely(ata_dev_enabled(ap->link.device))) |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 3728 | rc = __ata_scsi_queuecmd(cmd, done, ap->link.device); |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3729 | else { |
| 3730 | cmd->result = (DID_BAD_TARGET << 16); |
| 3731 | done(cmd); |
| 3732 | } |
Brian King | 08475a1 | 2006-11-20 13:51:56 -0600 | [diff] [blame] | 3733 | return rc; |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3734 | } |
| 3735 | EXPORT_SYMBOL_GPL(ata_sas_queuecmd); |