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 | |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 36 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include <linux/kernel.h> |
| 38 | #include <linux/blkdev.h> |
| 39 | #include <linux/spinlock.h> |
Paul Gortmaker | 38789fd | 2011-07-17 15:33:58 -0400 | [diff] [blame] | 40 | #include <linux/export.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include <scsi/scsi.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include <scsi/scsi_host.h> |
Christoph Hellwig | beb4048 | 2006-06-10 18:01:03 +0200 | [diff] [blame] | 43 | #include <scsi/scsi_cmnd.h> |
Mike Christie | 85837eb | 2005-11-11 16:38:53 -0600 | [diff] [blame] | 44 | #include <scsi/scsi_eh.h> |
Jeff Garzik | 005a5a0 | 2005-10-30 23:31:48 -0500 | [diff] [blame] | 45 | #include <scsi/scsi_device.h> |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 46 | #include <scsi/scsi_tcq.h> |
Tejun Heo | 30afc84 | 2006-03-18 18:40:14 +0900 | [diff] [blame] | 47 | #include <scsi/scsi_transport.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #include <linux/libata.h> |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 49 | #include <linux/hdreg.h> |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 50 | #include <linux/uaccess.h> |
Rafael J. Wysocki | 2a6e58d | 2009-01-19 20:56:43 +0100 | [diff] [blame] | 51 | #include <linux/suspend.h> |
Christoph Hellwig | 18f0f97 | 2009-11-17 10:00:47 -0500 | [diff] [blame] | 52 | #include <asm/unaligned.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | |
| 54 | #include "libata.h" |
Gwendal Grignou | d902747 | 2010-05-25 12:31:38 -0700 | [diff] [blame] | 55 | #include "libata-transport.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 57 | #define ATA_SCSI_RBUF_SIZE 4096 |
| 58 | |
| 59 | static DEFINE_SPINLOCK(ata_scsi_rbuf_lock); |
| 60 | static u8 ata_scsi_rbuf[ATA_SCSI_RBUF_SIZE]; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 61 | |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 62 | typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc); |
Tejun Heo | ab5b3a5 | 2006-05-31 18:27:34 +0900 | [diff] [blame] | 63 | |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 64 | static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap, |
Tejun Heo | ab5b3a5 | 2006-05-31 18:27:34 +0900 | [diff] [blame] | 65 | const struct scsi_device *scsidev); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 66 | static struct ata_device *ata_scsi_find_dev(struct ata_port *ap, |
Tejun Heo | ab5b3a5 | 2006-05-31 18:27:34 +0900 | [diff] [blame] | 67 | const struct scsi_device *scsidev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 69 | #define RW_RECOVERY_MPAGE 0x1 |
| 70 | #define RW_RECOVERY_MPAGE_LEN 12 |
| 71 | #define CACHE_MPAGE 0x8 |
| 72 | #define CACHE_MPAGE_LEN 20 |
| 73 | #define CONTROL_MPAGE 0xa |
| 74 | #define CONTROL_MPAGE_LEN 12 |
| 75 | #define ALL_MPAGES 0x3f |
| 76 | #define ALL_SUB_MPAGES 0xff |
| 77 | |
| 78 | |
Jeff Garzik | 24f7568 | 2007-09-21 07:54:49 -0400 | [diff] [blame] | 79 | static const u8 def_rw_recovery_mpage[RW_RECOVERY_MPAGE_LEN] = { |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 80 | RW_RECOVERY_MPAGE, |
| 81 | RW_RECOVERY_MPAGE_LEN - 2, |
Jeff Garzik | 24f7568 | 2007-09-21 07:54:49 -0400 | [diff] [blame] | 82 | (1 << 7), /* AWRE */ |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 83 | 0, /* read retry count */ |
| 84 | 0, 0, 0, 0, |
| 85 | 0, /* write retry count */ |
| 86 | 0, 0, 0 |
| 87 | }; |
| 88 | |
| 89 | static const u8 def_cache_mpage[CACHE_MPAGE_LEN] = { |
| 90 | CACHE_MPAGE, |
| 91 | CACHE_MPAGE_LEN - 2, |
| 92 | 0, /* contains WCE, needs to be 0 for logic */ |
| 93 | 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 94 | 0, /* contains DRA, needs to be 0 for logic */ |
| 95 | 0, 0, 0, 0, 0, 0, 0 |
| 96 | }; |
| 97 | |
| 98 | static const u8 def_control_mpage[CONTROL_MPAGE_LEN] = { |
| 99 | CONTROL_MPAGE, |
| 100 | CONTROL_MPAGE_LEN - 2, |
| 101 | 2, /* DSENSE=0, GLTSD=1 */ |
| 102 | 0, /* [QAM+QERR may be 1, see 05-359r1] */ |
| 103 | 0, 0, 0, 0, 0xff, 0xff, |
| 104 | 0, 30 /* extended self test time, see 05-359r1 */ |
| 105 | }; |
| 106 | |
Tejun Heo | c93b263 | 2010-09-01 17:50:04 +0200 | [diff] [blame] | 107 | static const char *ata_lpm_policy_names[] = { |
| 108 | [ATA_LPM_UNKNOWN] = "max_performance", |
| 109 | [ATA_LPM_MAX_POWER] = "max_performance", |
| 110 | [ATA_LPM_MED_POWER] = "medium_power", |
| 111 | [ATA_LPM_MIN_POWER] = "min_power", |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 112 | }; |
| 113 | |
Tejun Heo | c93b263 | 2010-09-01 17:50:04 +0200 | [diff] [blame] | 114 | static ssize_t ata_scsi_lpm_store(struct device *dev, |
| 115 | struct device_attribute *attr, |
| 116 | const char *buf, size_t count) |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 117 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 118 | struct Scsi_Host *shost = class_to_shost(dev); |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 119 | struct ata_port *ap = ata_shost_to_port(shost); |
Tejun Heo | c93b263 | 2010-09-01 17:50:04 +0200 | [diff] [blame] | 120 | enum ata_lpm_policy policy; |
Tejun Heo | 6b7ae95 | 2010-09-01 17:50:06 +0200 | [diff] [blame] | 121 | unsigned long flags; |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 122 | |
Tejun Heo | c93b263 | 2010-09-01 17:50:04 +0200 | [diff] [blame] | 123 | /* UNKNOWN is internal state, iterate from MAX_POWER */ |
| 124 | for (policy = ATA_LPM_MAX_POWER; |
| 125 | policy < ARRAY_SIZE(ata_lpm_policy_names); policy++) { |
| 126 | const char *name = ata_lpm_policy_names[policy]; |
| 127 | |
| 128 | if (strncmp(name, buf, strlen(name)) == 0) |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 129 | break; |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 130 | } |
Tejun Heo | c93b263 | 2010-09-01 17:50:04 +0200 | [diff] [blame] | 131 | if (policy == ARRAY_SIZE(ata_lpm_policy_names)) |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 132 | return -EINVAL; |
| 133 | |
Tejun Heo | 6b7ae95 | 2010-09-01 17:50:06 +0200 | [diff] [blame] | 134 | spin_lock_irqsave(ap->lock, flags); |
| 135 | ap->target_lpm_policy = policy; |
| 136 | ata_port_schedule_eh(ap); |
| 137 | spin_unlock_irqrestore(ap->lock, flags); |
| 138 | |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 139 | return count; |
| 140 | } |
| 141 | |
Tejun Heo | c93b263 | 2010-09-01 17:50:04 +0200 | [diff] [blame] | 142 | static ssize_t ata_scsi_lpm_show(struct device *dev, |
| 143 | struct device_attribute *attr, char *buf) |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 144 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 145 | struct Scsi_Host *shost = class_to_shost(dev); |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 146 | struct ata_port *ap = ata_shost_to_port(shost); |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 147 | |
Tejun Heo | 6b7ae95 | 2010-09-01 17:50:06 +0200 | [diff] [blame] | 148 | if (ap->target_lpm_policy >= ARRAY_SIZE(ata_lpm_policy_names)) |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 149 | return -EINVAL; |
| 150 | |
Tejun Heo | c93b263 | 2010-09-01 17:50:04 +0200 | [diff] [blame] | 151 | return snprintf(buf, PAGE_SIZE, "%s\n", |
Tejun Heo | 6b7ae95 | 2010-09-01 17:50:06 +0200 | [diff] [blame] | 152 | ata_lpm_policy_names[ap->target_lpm_policy]); |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 153 | } |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 154 | DEVICE_ATTR(link_power_management_policy, S_IRUGO | S_IWUSR, |
Tejun Heo | c93b263 | 2010-09-01 17:50:04 +0200 | [diff] [blame] | 155 | ata_scsi_lpm_show, ata_scsi_lpm_store); |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 156 | EXPORT_SYMBOL_GPL(dev_attr_link_power_management_policy); |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 157 | |
Elias Oltmanns | 45fabbb | 2008-09-21 11:54:08 +0200 | [diff] [blame] | 158 | static ssize_t ata_scsi_park_show(struct device *device, |
| 159 | struct device_attribute *attr, char *buf) |
| 160 | { |
| 161 | struct scsi_device *sdev = to_scsi_device(device); |
| 162 | struct ata_port *ap; |
| 163 | struct ata_link *link; |
| 164 | struct ata_device *dev; |
Elias Oltmanns | a464189 | 2008-11-03 19:01:08 +0900 | [diff] [blame] | 165 | unsigned long flags, now; |
Elias Oltmanns | 45fabbb | 2008-09-21 11:54:08 +0200 | [diff] [blame] | 166 | unsigned int uninitialized_var(msecs); |
| 167 | int rc = 0; |
| 168 | |
| 169 | ap = ata_shost_to_port(sdev->host); |
| 170 | |
| 171 | spin_lock_irqsave(ap->lock, flags); |
| 172 | dev = ata_scsi_find_dev(ap, sdev); |
| 173 | if (!dev) { |
| 174 | rc = -ENODEV; |
| 175 | goto unlock; |
| 176 | } |
| 177 | if (dev->flags & ATA_DFLAG_NO_UNLOAD) { |
| 178 | rc = -EOPNOTSUPP; |
| 179 | goto unlock; |
| 180 | } |
| 181 | |
| 182 | link = dev->link; |
Elias Oltmanns | a464189 | 2008-11-03 19:01:08 +0900 | [diff] [blame] | 183 | now = jiffies; |
Elias Oltmanns | 45fabbb | 2008-09-21 11:54:08 +0200 | [diff] [blame] | 184 | if (ap->pflags & ATA_PFLAG_EH_IN_PROGRESS && |
| 185 | link->eh_context.unloaded_mask & (1 << dev->devno) && |
Elias Oltmanns | a464189 | 2008-11-03 19:01:08 +0900 | [diff] [blame] | 186 | time_after(dev->unpark_deadline, now)) |
| 187 | msecs = jiffies_to_msecs(dev->unpark_deadline - now); |
Elias Oltmanns | 45fabbb | 2008-09-21 11:54:08 +0200 | [diff] [blame] | 188 | else |
| 189 | msecs = 0; |
| 190 | |
| 191 | unlock: |
| 192 | spin_unlock_irq(ap->lock); |
| 193 | |
| 194 | return rc ? rc : snprintf(buf, 20, "%u\n", msecs); |
| 195 | } |
| 196 | |
| 197 | static ssize_t ata_scsi_park_store(struct device *device, |
| 198 | struct device_attribute *attr, |
| 199 | const char *buf, size_t len) |
| 200 | { |
| 201 | struct scsi_device *sdev = to_scsi_device(device); |
| 202 | struct ata_port *ap; |
| 203 | struct ata_device *dev; |
| 204 | long int input; |
| 205 | unsigned long flags; |
| 206 | int rc; |
| 207 | |
| 208 | rc = strict_strtol(buf, 10, &input); |
| 209 | if (rc || input < -2) |
| 210 | return -EINVAL; |
| 211 | if (input > ATA_TMOUT_MAX_PARK) { |
| 212 | rc = -EOVERFLOW; |
| 213 | input = ATA_TMOUT_MAX_PARK; |
| 214 | } |
| 215 | |
| 216 | ap = ata_shost_to_port(sdev->host); |
| 217 | |
| 218 | spin_lock_irqsave(ap->lock, flags); |
| 219 | dev = ata_scsi_find_dev(ap, sdev); |
| 220 | if (unlikely(!dev)) { |
| 221 | rc = -ENODEV; |
| 222 | goto unlock; |
| 223 | } |
| 224 | if (dev->class != ATA_DEV_ATA) { |
| 225 | rc = -EOPNOTSUPP; |
| 226 | goto unlock; |
| 227 | } |
| 228 | |
| 229 | if (input >= 0) { |
| 230 | if (dev->flags & ATA_DFLAG_NO_UNLOAD) { |
| 231 | rc = -EOPNOTSUPP; |
| 232 | goto unlock; |
| 233 | } |
| 234 | |
| 235 | dev->unpark_deadline = ata_deadline(jiffies, input); |
| 236 | dev->link->eh_info.dev_action[dev->devno] |= ATA_EH_PARK; |
| 237 | ata_port_schedule_eh(ap); |
| 238 | complete(&ap->park_req_pending); |
| 239 | } else { |
| 240 | switch (input) { |
| 241 | case -1: |
| 242 | dev->flags &= ~ATA_DFLAG_NO_UNLOAD; |
| 243 | break; |
| 244 | case -2: |
| 245 | dev->flags |= ATA_DFLAG_NO_UNLOAD; |
| 246 | break; |
| 247 | } |
| 248 | } |
| 249 | unlock: |
| 250 | spin_unlock_irqrestore(ap->lock, flags); |
| 251 | |
| 252 | return rc ? rc : len; |
| 253 | } |
| 254 | DEVICE_ATTR(unload_heads, S_IRUGO | S_IWUSR, |
| 255 | ata_scsi_park_show, ata_scsi_park_store); |
| 256 | EXPORT_SYMBOL_GPL(dev_attr_unload_heads); |
| 257 | |
Tejun Heo | f0761be | 2008-04-28 17:16:52 +0900 | [diff] [blame] | 258 | static void ata_scsi_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq) |
| 259 | { |
| 260 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
| 261 | |
| 262 | scsi_build_sense_buffer(0, cmd->sense_buffer, sk, asc, ascq); |
| 263 | } |
| 264 | |
Kristen Carlson Accardi | 18f7ba4 | 2008-06-03 10:33:55 -0700 | [diff] [blame] | 265 | static ssize_t |
| 266 | ata_scsi_em_message_store(struct device *dev, struct device_attribute *attr, |
| 267 | const char *buf, size_t count) |
| 268 | { |
| 269 | struct Scsi_Host *shost = class_to_shost(dev); |
| 270 | struct ata_port *ap = ata_shost_to_port(shost); |
| 271 | if (ap->ops->em_store && (ap->flags & ATA_FLAG_EM)) |
| 272 | return ap->ops->em_store(ap, buf, count); |
| 273 | return -EINVAL; |
| 274 | } |
| 275 | |
| 276 | static ssize_t |
| 277 | ata_scsi_em_message_show(struct device *dev, struct device_attribute *attr, |
| 278 | char *buf) |
| 279 | { |
| 280 | struct Scsi_Host *shost = class_to_shost(dev); |
| 281 | struct ata_port *ap = ata_shost_to_port(shost); |
| 282 | |
| 283 | if (ap->ops->em_show && (ap->flags & ATA_FLAG_EM)) |
| 284 | return ap->ops->em_show(ap, buf); |
| 285 | return -EINVAL; |
| 286 | } |
Vitaly Mayatskikh | ea7a5ed | 2009-05-04 15:48:45 +0200 | [diff] [blame] | 287 | DEVICE_ATTR(em_message, S_IRUGO | S_IWUSR, |
Kristen Carlson Accardi | 18f7ba4 | 2008-06-03 10:33:55 -0700 | [diff] [blame] | 288 | ata_scsi_em_message_show, ata_scsi_em_message_store); |
| 289 | EXPORT_SYMBOL_GPL(dev_attr_em_message); |
| 290 | |
| 291 | static ssize_t |
| 292 | ata_scsi_em_message_type_show(struct device *dev, struct device_attribute *attr, |
| 293 | char *buf) |
| 294 | { |
| 295 | struct Scsi_Host *shost = class_to_shost(dev); |
| 296 | struct ata_port *ap = ata_shost_to_port(shost); |
| 297 | |
| 298 | return snprintf(buf, 23, "%d\n", ap->em_message_type); |
| 299 | } |
| 300 | DEVICE_ATTR(em_message_type, S_IRUGO, |
| 301 | ata_scsi_em_message_type_show, NULL); |
| 302 | EXPORT_SYMBOL_GPL(dev_attr_em_message_type); |
| 303 | |
| 304 | static ssize_t |
| 305 | ata_scsi_activity_show(struct device *dev, struct device_attribute *attr, |
| 306 | char *buf) |
| 307 | { |
| 308 | struct scsi_device *sdev = to_scsi_device(dev); |
| 309 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
| 310 | struct ata_device *atadev = ata_scsi_find_dev(ap, sdev); |
| 311 | |
| 312 | if (ap->ops->sw_activity_show && (ap->flags & ATA_FLAG_SW_ACTIVITY)) |
| 313 | return ap->ops->sw_activity_show(atadev, buf); |
| 314 | return -EINVAL; |
| 315 | } |
| 316 | |
| 317 | static ssize_t |
| 318 | ata_scsi_activity_store(struct device *dev, struct device_attribute *attr, |
| 319 | const char *buf, size_t count) |
| 320 | { |
| 321 | struct scsi_device *sdev = to_scsi_device(dev); |
| 322 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
| 323 | struct ata_device *atadev = ata_scsi_find_dev(ap, sdev); |
| 324 | enum sw_activity val; |
| 325 | int rc; |
| 326 | |
| 327 | if (ap->ops->sw_activity_store && (ap->flags & ATA_FLAG_SW_ACTIVITY)) { |
| 328 | val = simple_strtoul(buf, NULL, 0); |
| 329 | switch (val) { |
| 330 | case OFF: case BLINK_ON: case BLINK_OFF: |
| 331 | rc = ap->ops->sw_activity_store(atadev, val); |
| 332 | if (!rc) |
| 333 | return count; |
| 334 | else |
| 335 | return rc; |
| 336 | } |
| 337 | } |
| 338 | return -EINVAL; |
| 339 | } |
Vitaly Mayatskikh | ea7a5ed | 2009-05-04 15:48:45 +0200 | [diff] [blame] | 340 | DEVICE_ATTR(sw_activity, S_IWUSR | S_IRUGO, ata_scsi_activity_show, |
Kristen Carlson Accardi | 18f7ba4 | 2008-06-03 10:33:55 -0700 | [diff] [blame] | 341 | ata_scsi_activity_store); |
| 342 | EXPORT_SYMBOL_GPL(dev_attr_sw_activity); |
| 343 | |
Elias Oltmanns | 45fabbb | 2008-09-21 11:54:08 +0200 | [diff] [blame] | 344 | struct device_attribute *ata_common_sdev_attrs[] = { |
| 345 | &dev_attr_unload_heads, |
| 346 | NULL |
| 347 | }; |
| 348 | EXPORT_SYMBOL_GPL(ata_common_sdev_attrs); |
| 349 | |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 350 | static void ata_scsi_invalid_field(struct scsi_cmnd *cmd) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 351 | { |
| 352 | ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x24, 0x0); |
| 353 | /* "Invalid field in cbd" */ |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 354 | cmd->scsi_done(cmd); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 355 | } |
| 356 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | /** |
| 358 | * ata_std_bios_param - generic bios head/sector/cylinder calculator used by sd. |
| 359 | * @sdev: SCSI device for which BIOS geometry is to be determined |
| 360 | * @bdev: block device associated with @sdev |
| 361 | * @capacity: capacity of SCSI device |
| 362 | * @geom: location to which geometry will be output |
| 363 | * |
| 364 | * Generic bios head/sector/cylinder calculator |
| 365 | * used by sd. Most BIOSes nowadays expect a XXX/255/16 (CHS) |
| 366 | * mapping. Some situations may arise where the disk is not |
| 367 | * bootable if this is not used. |
| 368 | * |
| 369 | * LOCKING: |
| 370 | * Defined by the SCSI layer. We don't really care. |
| 371 | * |
| 372 | * RETURNS: |
| 373 | * Zero. |
| 374 | */ |
| 375 | int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev, |
| 376 | sector_t capacity, int geom[]) |
| 377 | { |
| 378 | geom[0] = 255; |
| 379 | geom[1] = 63; |
| 380 | sector_div(capacity, 255*63); |
| 381 | geom[2] = capacity; |
| 382 | |
| 383 | return 0; |
| 384 | } |
| 385 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 386 | /** |
Tejun Heo | d8d9129 | 2010-05-15 20:09:34 +0200 | [diff] [blame] | 387 | * ata_scsi_unlock_native_capacity - unlock native capacity |
| 388 | * @sdev: SCSI device to adjust device capacity for |
| 389 | * |
| 390 | * This function is called if a partition on @sdev extends beyond |
| 391 | * the end of the device. It requests EH to unlock HPA. |
| 392 | * |
| 393 | * LOCKING: |
| 394 | * Defined by the SCSI layer. Might sleep. |
| 395 | */ |
| 396 | void ata_scsi_unlock_native_capacity(struct scsi_device *sdev) |
| 397 | { |
| 398 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
| 399 | struct ata_device *dev; |
| 400 | unsigned long flags; |
| 401 | |
| 402 | spin_lock_irqsave(ap->lock, flags); |
| 403 | |
| 404 | dev = ata_scsi_find_dev(ap, sdev); |
| 405 | if (dev && dev->n_sectors < dev->n_native_sectors) { |
| 406 | dev->flags |= ATA_DFLAG_UNLOCK_HPA; |
| 407 | dev->link->eh_info.action |= ATA_EH_RESET; |
| 408 | ata_port_schedule_eh(ap); |
| 409 | } |
| 410 | |
| 411 | spin_unlock_irqrestore(ap->lock, flags); |
| 412 | ata_port_wait_eh(ap); |
| 413 | } |
| 414 | |
| 415 | /** |
Tejun Heo | 5924b74 | 2007-01-02 20:20:07 +0900 | [diff] [blame] | 416 | * ata_get_identity - Handler for HDIO_GET_IDENTITY ioctl |
Randy Dunlap | 5eb66fe | 2009-01-20 16:28:59 -0800 | [diff] [blame] | 417 | * @ap: target port |
Tejun Heo | 5924b74 | 2007-01-02 20:20:07 +0900 | [diff] [blame] | 418 | * @sdev: SCSI device to get identify data for |
| 419 | * @arg: User buffer area for identify data |
| 420 | * |
| 421 | * LOCKING: |
| 422 | * Defined by the SCSI layer. We don't really care. |
| 423 | * |
| 424 | * RETURNS: |
| 425 | * Zero on success, negative errno on error. |
| 426 | */ |
Jeff Garzik | 94be9a5 | 2009-01-16 10:17:09 -0500 | [diff] [blame] | 427 | static int ata_get_identity(struct ata_port *ap, struct scsi_device *sdev, |
| 428 | void __user *arg) |
Tejun Heo | 5924b74 | 2007-01-02 20:20:07 +0900 | [diff] [blame] | 429 | { |
Tejun Heo | 5924b74 | 2007-01-02 20:20:07 +0900 | [diff] [blame] | 430 | struct ata_device *dev = ata_scsi_find_dev(ap, sdev); |
| 431 | u16 __user *dst = arg; |
| 432 | char buf[40]; |
| 433 | |
| 434 | if (!dev) |
| 435 | return -ENOMSG; |
| 436 | |
| 437 | if (copy_to_user(dst, dev->id, ATA_ID_WORDS * sizeof(u16))) |
| 438 | return -EFAULT; |
| 439 | |
| 440 | ata_id_string(dev->id, buf, ATA_ID_PROD, ATA_ID_PROD_LEN); |
| 441 | if (copy_to_user(dst + ATA_ID_PROD, buf, ATA_ID_PROD_LEN)) |
| 442 | return -EFAULT; |
| 443 | |
| 444 | ata_id_string(dev->id, buf, ATA_ID_FW_REV, ATA_ID_FW_REV_LEN); |
| 445 | if (copy_to_user(dst + ATA_ID_FW_REV, buf, ATA_ID_FW_REV_LEN)) |
| 446 | return -EFAULT; |
| 447 | |
| 448 | ata_id_string(dev->id, buf, ATA_ID_SERNO, ATA_ID_SERNO_LEN); |
| 449 | if (copy_to_user(dst + ATA_ID_SERNO, buf, ATA_ID_SERNO_LEN)) |
| 450 | return -EFAULT; |
| 451 | |
| 452 | return 0; |
| 453 | } |
| 454 | |
| 455 | /** |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 456 | * ata_cmd_ioctl - Handler for HDIO_DRIVE_CMD ioctl |
Randy Dunlap | 8e8b77d | 2005-11-01 21:29:27 -0800 | [diff] [blame] | 457 | * @scsidev: Device to which we are issuing command |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 458 | * @arg: User provided data for issuing command |
| 459 | * |
| 460 | * LOCKING: |
| 461 | * Defined by the SCSI layer. We don't really care. |
| 462 | * |
| 463 | * RETURNS: |
| 464 | * Zero on success, negative errno on error. |
| 465 | */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 466 | int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg) |
| 467 | { |
| 468 | int rc = 0; |
| 469 | u8 scsi_cmd[MAX_COMMAND_SIZE]; |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 470 | u8 args[4], *argbuf = NULL, *sensebuf = NULL; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 471 | int argsize = 0; |
Mike Christie | 85837eb | 2005-11-11 16:38:53 -0600 | [diff] [blame] | 472 | enum dma_data_direction data_dir; |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 473 | int cmd_result; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 474 | |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 475 | if (arg == NULL) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 476 | return -EINVAL; |
| 477 | |
| 478 | if (copy_from_user(args, arg, sizeof(args))) |
| 479 | return -EFAULT; |
| 480 | |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 481 | sensebuf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO); |
| 482 | if (!sensebuf) |
| 483 | return -ENOMEM; |
| 484 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 485 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
| 486 | |
| 487 | if (args[3]) { |
Grant Grundler | 295124d | 2010-08-17 10:56:53 -0700 | [diff] [blame] | 488 | argsize = ATA_SECT_SIZE * args[3]; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 489 | argbuf = kmalloc(argsize, GFP_KERNEL); |
Jeff Raubitschek | 54dac83 | 2005-10-04 10:21:19 -0400 | [diff] [blame] | 490 | if (argbuf == NULL) { |
| 491 | rc = -ENOMEM; |
| 492 | goto error; |
| 493 | } |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 494 | |
| 495 | scsi_cmd[1] = (4 << 1); /* PIO Data-in */ |
| 496 | scsi_cmd[2] = 0x0e; /* no off.line or cc, read from dev, |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 497 | block count in sector count field */ |
Mike Christie | 85837eb | 2005-11-11 16:38:53 -0600 | [diff] [blame] | 498 | data_dir = DMA_FROM_DEVICE; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 499 | } else { |
| 500 | scsi_cmd[1] = (3 << 1); /* Non-data */ |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 501 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ |
Mike Christie | 85837eb | 2005-11-11 16:38:53 -0600 | [diff] [blame] | 502 | data_dir = DMA_NONE; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 503 | } |
| 504 | |
| 505 | scsi_cmd[0] = ATA_16; |
| 506 | |
| 507 | scsi_cmd[4] = args[2]; |
Bartlomiej Zolnierkiewicz | a4f1904 | 2008-10-10 22:39:20 +0200 | [diff] [blame] | 508 | if (args[0] == ATA_CMD_SMART) { /* hack -- ide driver does this too */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 509 | scsi_cmd[6] = args[3]; |
| 510 | scsi_cmd[8] = args[1]; |
| 511 | scsi_cmd[10] = 0x4f; |
| 512 | scsi_cmd[12] = 0xc2; |
| 513 | } else { |
| 514 | scsi_cmd[6] = args[1]; |
| 515 | } |
| 516 | scsi_cmd[14] = args[0]; |
| 517 | |
| 518 | /* Good values for timeout and retries? Values below |
| 519 | from scsi_ioctl_send_command() for default case... */ |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 520 | cmd_result = scsi_execute(scsidev, scsi_cmd, data_dir, argbuf, argsize, |
FUJITA Tomonori | f4f4e47 | 2008-12-04 14:24:39 +0900 | [diff] [blame] | 521 | sensebuf, (10*HZ), 5, 0, NULL); |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 522 | |
| 523 | if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */ |
| 524 | u8 *desc = sensebuf + 8; |
| 525 | cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ |
| 526 | |
| 527 | /* If we set cc then ATA pass-through will cause a |
| 528 | * check condition even if no error. Filter that. */ |
| 529 | if (cmd_result & SAM_STAT_CHECK_CONDITION) { |
| 530 | struct scsi_sense_hdr sshdr; |
| 531 | scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE, |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 532 | &sshdr); |
| 533 | if (sshdr.sense_key == 0 && |
| 534 | sshdr.asc == 0 && sshdr.ascq == 0) |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 535 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; |
| 536 | } |
| 537 | |
| 538 | /* Send userspace a few ATA registers (same as drivers/ide) */ |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 539 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ |
| 540 | desc[0] == 0x09) { /* code is "ATA Descriptor" */ |
| 541 | args[0] = desc[13]; /* status */ |
| 542 | args[1] = desc[3]; /* error */ |
| 543 | args[2] = desc[5]; /* sector count (0:7) */ |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 544 | if (copy_to_user(arg, args, sizeof(args))) |
| 545 | rc = -EFAULT; |
| 546 | } |
| 547 | } |
| 548 | |
| 549 | |
| 550 | if (cmd_result) { |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 551 | rc = -EIO; |
| 552 | goto error; |
| 553 | } |
| 554 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 555 | if ((argbuf) |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 556 | && copy_to_user(arg + sizeof(args), argbuf, argsize)) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 557 | rc = -EFAULT; |
| 558 | error: |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 559 | kfree(sensebuf); |
Jesper Juhl | 8f76078 | 2006-06-27 02:55:06 -0700 | [diff] [blame] | 560 | kfree(argbuf); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 561 | return rc; |
| 562 | } |
| 563 | |
| 564 | /** |
| 565 | * ata_task_ioctl - Handler for HDIO_DRIVE_TASK ioctl |
Randy Dunlap | 8e8b77d | 2005-11-01 21:29:27 -0800 | [diff] [blame] | 566 | * @scsidev: Device to which we are issuing command |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 567 | * @arg: User provided data for issuing command |
| 568 | * |
| 569 | * LOCKING: |
| 570 | * Defined by the SCSI layer. We don't really care. |
| 571 | * |
| 572 | * RETURNS: |
| 573 | * Zero on success, negative errno on error. |
| 574 | */ |
| 575 | int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg) |
| 576 | { |
| 577 | int rc = 0; |
| 578 | u8 scsi_cmd[MAX_COMMAND_SIZE]; |
David Milburn | af068bd | 2007-01-30 00:59:15 -0800 | [diff] [blame] | 579 | u8 args[7], *sensebuf = NULL; |
| 580 | int cmd_result; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 581 | |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 582 | if (arg == NULL) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 583 | return -EINVAL; |
| 584 | |
| 585 | if (copy_from_user(args, arg, sizeof(args))) |
| 586 | return -EFAULT; |
| 587 | |
David Milburn | af068bd | 2007-01-30 00:59:15 -0800 | [diff] [blame] | 588 | sensebuf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO); |
| 589 | if (!sensebuf) |
| 590 | return -ENOMEM; |
| 591 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 592 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
| 593 | scsi_cmd[0] = ATA_16; |
| 594 | scsi_cmd[1] = (3 << 1); /* Non-data */ |
David Milburn | af068bd | 2007-01-30 00:59:15 -0800 | [diff] [blame] | 595 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 596 | scsi_cmd[4] = args[1]; |
| 597 | scsi_cmd[6] = args[2]; |
| 598 | scsi_cmd[8] = args[3]; |
| 599 | scsi_cmd[10] = args[4]; |
| 600 | scsi_cmd[12] = args[5]; |
Mark Lord | 277239f | 2007-03-30 17:45:52 -0400 | [diff] [blame] | 601 | scsi_cmd[13] = args[6] & 0x4f; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 602 | scsi_cmd[14] = args[0]; |
| 603 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 604 | /* Good values for timeout and retries? Values below |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 605 | from scsi_ioctl_send_command() for default case... */ |
David Milburn | af068bd | 2007-01-30 00:59:15 -0800 | [diff] [blame] | 606 | cmd_result = scsi_execute(scsidev, scsi_cmd, DMA_NONE, NULL, 0, |
FUJITA Tomonori | f4f4e47 | 2008-12-04 14:24:39 +0900 | [diff] [blame] | 607 | sensebuf, (10*HZ), 5, 0, NULL); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 608 | |
David Milburn | af068bd | 2007-01-30 00:59:15 -0800 | [diff] [blame] | 609 | if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */ |
| 610 | u8 *desc = sensebuf + 8; |
| 611 | cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ |
| 612 | |
| 613 | /* If we set cc then ATA pass-through will cause a |
| 614 | * check condition even if no error. Filter that. */ |
| 615 | if (cmd_result & SAM_STAT_CHECK_CONDITION) { |
| 616 | struct scsi_sense_hdr sshdr; |
| 617 | scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE, |
| 618 | &sshdr); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 619 | if (sshdr.sense_key == 0 && |
| 620 | sshdr.asc == 0 && sshdr.ascq == 0) |
David Milburn | af068bd | 2007-01-30 00:59:15 -0800 | [diff] [blame] | 621 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; |
| 622 | } |
| 623 | |
| 624 | /* Send userspace ATA registers */ |
| 625 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ |
| 626 | desc[0] == 0x09) {/* code is "ATA Descriptor" */ |
| 627 | args[0] = desc[13]; /* status */ |
| 628 | args[1] = desc[3]; /* error */ |
| 629 | args[2] = desc[5]; /* sector count (0:7) */ |
| 630 | args[3] = desc[7]; /* lbal */ |
| 631 | args[4] = desc[9]; /* lbam */ |
| 632 | args[5] = desc[11]; /* lbah */ |
| 633 | args[6] = desc[12]; /* select */ |
| 634 | if (copy_to_user(arg, args, sizeof(args))) |
| 635 | rc = -EFAULT; |
| 636 | } |
| 637 | } |
| 638 | |
| 639 | if (cmd_result) { |
| 640 | rc = -EIO; |
| 641 | goto error; |
| 642 | } |
| 643 | |
| 644 | error: |
| 645 | kfree(sensebuf); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 646 | return rc; |
| 647 | } |
| 648 | |
Alan Cox | e3cf95d | 2009-04-09 17:31:17 +0100 | [diff] [blame] | 649 | static int ata_ioc32(struct ata_port *ap) |
| 650 | { |
| 651 | if (ap->flags & ATA_FLAG_PIO_DMA) |
| 652 | return 1; |
| 653 | if (ap->pflags & ATA_PFLAG_PIO32) |
| 654 | return 1; |
| 655 | return 0; |
| 656 | } |
| 657 | |
Jeff Garzik | 94be9a5 | 2009-01-16 10:17:09 -0500 | [diff] [blame] | 658 | int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *scsidev, |
| 659 | int cmd, void __user *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | int val = -EINVAL, rc = -EINVAL; |
Alan Cox | e3cf95d | 2009-04-09 17:31:17 +0100 | [diff] [blame] | 662 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | switch (cmd) { |
| 665 | case ATA_IOC_GET_IO32: |
Alan Cox | e3cf95d | 2009-04-09 17:31:17 +0100 | [diff] [blame] | 666 | spin_lock_irqsave(ap->lock, flags); |
| 667 | val = ata_ioc32(ap); |
| 668 | spin_unlock_irqrestore(ap->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | if (copy_to_user(arg, &val, 1)) |
| 670 | return -EFAULT; |
| 671 | return 0; |
| 672 | |
| 673 | case ATA_IOC_SET_IO32: |
| 674 | val = (unsigned long) arg; |
Alan Cox | e3cf95d | 2009-04-09 17:31:17 +0100 | [diff] [blame] | 675 | rc = 0; |
| 676 | spin_lock_irqsave(ap->lock, flags); |
| 677 | if (ap->pflags & ATA_PFLAG_PIO32CHANGE) { |
| 678 | if (val) |
| 679 | ap->pflags |= ATA_PFLAG_PIO32; |
| 680 | else |
| 681 | ap->pflags &= ~ATA_PFLAG_PIO32; |
| 682 | } else { |
| 683 | if (val != ata_ioc32(ap)) |
| 684 | rc = -EINVAL; |
| 685 | } |
| 686 | spin_unlock_irqrestore(ap->lock, flags); |
| 687 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | |
Tejun Heo | 5924b74 | 2007-01-02 20:20:07 +0900 | [diff] [blame] | 689 | case HDIO_GET_IDENTITY: |
Jeff Garzik | 94be9a5 | 2009-01-16 10:17:09 -0500 | [diff] [blame] | 690 | return ata_get_identity(ap, scsidev, arg); |
Tejun Heo | 5924b74 | 2007-01-02 20:20:07 +0900 | [diff] [blame] | 691 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 692 | case HDIO_DRIVE_CMD: |
| 693 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
| 694 | return -EACCES; |
| 695 | return ata_cmd_ioctl(scsidev, arg); |
| 696 | |
| 697 | case HDIO_DRIVE_TASK: |
| 698 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
| 699 | return -EACCES; |
| 700 | return ata_task_ioctl(scsidev, arg); |
| 701 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 702 | default: |
| 703 | rc = -ENOTTY; |
| 704 | break; |
| 705 | } |
| 706 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | return rc; |
| 708 | } |
Jeff Garzik | 94be9a5 | 2009-01-16 10:17:09 -0500 | [diff] [blame] | 709 | EXPORT_SYMBOL_GPL(ata_sas_scsi_ioctl); |
| 710 | |
| 711 | int ata_scsi_ioctl(struct scsi_device *scsidev, int cmd, void __user *arg) |
| 712 | { |
| 713 | return ata_sas_scsi_ioctl(ata_shost_to_port(scsidev->host), |
| 714 | scsidev, cmd, arg); |
| 715 | } |
| 716 | EXPORT_SYMBOL_GPL(ata_scsi_ioctl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | |
| 718 | /** |
| 719 | * ata_scsi_qc_new - acquire new ata_queued_cmd reference |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | * @dev: ATA device to which the new command is attached |
| 721 | * @cmd: SCSI command that originated this ATA command |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | * |
| 723 | * Obtain a reference to an unused ata_queued_cmd structure, |
| 724 | * which is the basic libata structure representing a single |
| 725 | * ATA command sent to the hardware. |
| 726 | * |
| 727 | * If a command was available, fill in the SCSI-specific |
| 728 | * portions of the structure with information on the |
| 729 | * current command. |
| 730 | * |
| 731 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 732 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | * |
| 734 | * RETURNS: |
| 735 | * Command allocated, or %NULL if none available. |
| 736 | */ |
Adrian Bunk | 7102d23 | 2007-01-04 00:09:36 +0100 | [diff] [blame] | 737 | static struct ata_queued_cmd *ata_scsi_qc_new(struct ata_device *dev, |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 738 | struct scsi_cmnd *cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | { |
| 740 | struct ata_queued_cmd *qc; |
| 741 | |
Tejun Heo | 8a8bc22 | 2008-11-10 14:48:21 +0900 | [diff] [blame] | 742 | qc = ata_qc_new_init(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | if (qc) { |
| 744 | qc->scsicmd = cmd; |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 745 | qc->scsidone = cmd->scsi_done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | |
Tejun Heo | ff2aeb1 | 2007-12-05 16:43:11 +0900 | [diff] [blame] | 747 | qc->sg = scsi_sglist(cmd); |
Boaz Harrosh | 7120165 | 2007-09-18 17:48:50 +0200 | [diff] [blame] | 748 | qc->n_elem = scsi_sg_count(cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | } else { |
| 750 | cmd->result = (DID_OK << 16) | (QUEUE_FULL << 1); |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 751 | cmd->scsi_done(cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | } |
| 753 | |
| 754 | return qc; |
| 755 | } |
| 756 | |
Tejun Heo | aacda37 | 2008-03-18 17:47:43 +0900 | [diff] [blame] | 757 | static void ata_qc_set_pc_nbytes(struct ata_queued_cmd *qc) |
| 758 | { |
| 759 | struct scsi_cmnd *scmd = qc->scsicmd; |
| 760 | |
| 761 | qc->extrabytes = scmd->request->extra_len; |
| 762 | qc->nbytes = scsi_bufflen(scmd) + qc->extrabytes; |
| 763 | } |
| 764 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | /** |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 766 | * ata_dump_status - user friendly display of error info |
| 767 | * @id: id of the port in question |
| 768 | * @tf: ptr to filled out taskfile |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | * |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 770 | * Decode and dump the ATA error/status registers for the user so |
| 771 | * that they have some idea what really happened at the non |
| 772 | * make-believe layer. |
| 773 | * |
| 774 | * LOCKING: |
| 775 | * inherited from caller |
| 776 | */ |
Adrian Bunk | 7102d23 | 2007-01-04 00:09:36 +0100 | [diff] [blame] | 777 | static void ata_dump_status(unsigned id, struct ata_taskfile *tf) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 778 | { |
| 779 | u8 stat = tf->command, err = tf->feature; |
| 780 | |
| 781 | printk(KERN_WARNING "ata%u: status=0x%02x { ", id, stat); |
| 782 | if (stat & ATA_BUSY) { |
| 783 | printk("Busy }\n"); /* Data is not valid in this case */ |
| 784 | } else { |
| 785 | if (stat & 0x40) printk("DriveReady "); |
| 786 | if (stat & 0x20) printk("DeviceFault "); |
| 787 | if (stat & 0x10) printk("SeekComplete "); |
| 788 | if (stat & 0x08) printk("DataRequest "); |
| 789 | if (stat & 0x04) printk("CorrectedError "); |
| 790 | if (stat & 0x02) printk("Index "); |
| 791 | if (stat & 0x01) printk("Error "); |
| 792 | printk("}\n"); |
| 793 | |
| 794 | if (err) { |
| 795 | printk(KERN_WARNING "ata%u: error=0x%02x { ", id, err); |
| 796 | if (err & 0x04) printk("DriveStatusError "); |
| 797 | if (err & 0x80) { |
| 798 | if (err & 0x04) printk("BadCRC "); |
| 799 | else printk("Sector "); |
| 800 | } |
| 801 | if (err & 0x40) printk("UncorrectableError "); |
| 802 | if (err & 0x10) printk("SectorIdNotFound "); |
| 803 | if (err & 0x02) printk("TrackZeroNotFound "); |
| 804 | if (err & 0x01) printk("AddrMarkNotFound "); |
| 805 | printk("}\n"); |
| 806 | } |
| 807 | } |
| 808 | } |
| 809 | |
| 810 | /** |
| 811 | * ata_to_sense_error - convert ATA error to SCSI error |
Randy Dunlap | 8e8b77d | 2005-11-01 21:29:27 -0800 | [diff] [blame] | 812 | * @id: ATA device number |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 813 | * @drv_stat: value contained in ATA status register |
| 814 | * @drv_err: value contained in ATA error register |
| 815 | * @sk: the sense key we'll fill out |
| 816 | * @asc: the additional sense code we'll fill out |
| 817 | * @ascq: the additional sense code qualifier we'll fill out |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 818 | * @verbose: be verbose |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 819 | * |
| 820 | * Converts an ATA error into a SCSI error. Fill out pointers to |
| 821 | * SK, ASC, and ASCQ bytes for later use in fixed or descriptor |
| 822 | * format sense blocks. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | * |
| 824 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 825 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | */ |
Adrian Bunk | 7102d23 | 2007-01-04 00:09:36 +0100 | [diff] [blame] | 827 | static void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, |
| 828 | u8 *asc, u8 *ascq, int verbose) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | { |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 830 | int i; |
Jeff Garzik | ffe75ef | 2005-10-09 10:40:44 -0400 | [diff] [blame] | 831 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | /* Based on the 3ware driver translation table */ |
Arjan van de Ven | 98ac62d | 2005-11-28 10:06:23 +0100 | [diff] [blame] | 833 | static const unsigned char sense_table[][4] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | /* BBD|ECC|ID|MAR */ |
| 835 | {0xd1, ABORTED_COMMAND, 0x00, 0x00}, // Device busy Aborted command |
| 836 | /* BBD|ECC|ID */ |
| 837 | {0xd0, ABORTED_COMMAND, 0x00, 0x00}, // Device busy Aborted command |
| 838 | /* ECC|MC|MARK */ |
| 839 | {0x61, HARDWARE_ERROR, 0x00, 0x00}, // Device fault Hardware error |
| 840 | /* ICRC|ABRT */ /* NB: ICRC & !ABRT is BBD */ |
| 841 | {0x84, ABORTED_COMMAND, 0x47, 0x00}, // Data CRC error SCSI parity error |
| 842 | /* MC|ID|ABRT|TRK0|MARK */ |
| 843 | {0x37, NOT_READY, 0x04, 0x00}, // Unit offline Not ready |
| 844 | /* MCR|MARK */ |
| 845 | {0x09, NOT_READY, 0x04, 0x00}, // Unrecovered disk error Not ready |
| 846 | /* Bad address mark */ |
| 847 | {0x01, MEDIUM_ERROR, 0x13, 0x00}, // Address mark not found Address mark not found for data field |
| 848 | /* TRK0 */ |
| 849 | {0x02, HARDWARE_ERROR, 0x00, 0x00}, // Track 0 not found Hardware error |
| 850 | /* Abort & !ICRC */ |
| 851 | {0x04, ABORTED_COMMAND, 0x00, 0x00}, // Aborted command Aborted command |
| 852 | /* Media change request */ |
| 853 | {0x08, NOT_READY, 0x04, 0x00}, // Media change request FIXME: faking offline |
| 854 | /* SRV */ |
| 855 | {0x10, ABORTED_COMMAND, 0x14, 0x00}, // ID not found Recorded entity not found |
| 856 | /* Media change */ |
| 857 | {0x08, NOT_READY, 0x04, 0x00}, // Media change FIXME: faking offline |
| 858 | /* ECC */ |
| 859 | {0x40, MEDIUM_ERROR, 0x11, 0x04}, // Uncorrectable ECC error Unrecovered read error |
| 860 | /* BBD - block marked bad */ |
| 861 | {0x80, MEDIUM_ERROR, 0x11, 0x04}, // Block marked bad Medium error, unrecovered read error |
| 862 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
| 863 | }; |
Arjan van de Ven | 98ac62d | 2005-11-28 10:06:23 +0100 | [diff] [blame] | 864 | static const unsigned char stat_table[][4] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 865 | /* Must be first because BUSY means no other bits valid */ |
| 866 | {0x80, ABORTED_COMMAND, 0x47, 0x00}, // Busy, fake parity for now |
| 867 | {0x20, HARDWARE_ERROR, 0x00, 0x00}, // Device fault |
| 868 | {0x08, ABORTED_COMMAND, 0x47, 0x00}, // Timed out in xfer, fake parity for now |
| 869 | {0x04, RECOVERED_ERROR, 0x11, 0x00}, // Recovered ECC error Medium error, recovered |
| 870 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
| 871 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 873 | /* |
| 874 | * Is this an error we can process/parse |
| 875 | */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 876 | if (drv_stat & ATA_BUSY) { |
| 877 | drv_err = 0; /* Ignore the err bits, they're invalid */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 878 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 880 | if (drv_err) { |
| 881 | /* Look for drv_err */ |
| 882 | for (i = 0; sense_table[i][0] != 0xFF; i++) { |
| 883 | /* Look for best matches first */ |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 884 | if ((sense_table[i][0] & drv_err) == |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 885 | sense_table[i][0]) { |
| 886 | *sk = sense_table[i][1]; |
| 887 | *asc = sense_table[i][2]; |
| 888 | *ascq = sense_table[i][3]; |
| 889 | goto translate_done; |
| 890 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 891 | } |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 892 | /* No immediate match */ |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 893 | if (verbose) |
| 894 | printk(KERN_WARNING "ata%u: no sense translation for " |
| 895 | "error 0x%02x\n", id, drv_err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | } |
| 897 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 898 | /* Fall back to interpreting status bits */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 899 | for (i = 0; stat_table[i][0] != 0xFF; i++) { |
| 900 | if (stat_table[i][0] & drv_stat) { |
| 901 | *sk = stat_table[i][1]; |
| 902 | *asc = stat_table[i][2]; |
| 903 | *ascq = stat_table[i][3]; |
| 904 | goto translate_done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | } |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 907 | /* No error? Undecoded? */ |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 908 | if (verbose) |
| 909 | printk(KERN_WARNING "ata%u: no sense translation for " |
| 910 | "status: 0x%02x\n", id, drv_stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | |
Alan Cox | 2d20202 | 2006-03-21 15:53:46 +0000 | [diff] [blame] | 912 | /* We need a sensible error return here, which is tricky, and one |
| 913 | that won't cause people to do things like return a disk wrongly */ |
| 914 | *sk = ABORTED_COMMAND; |
| 915 | *asc = 0x00; |
| 916 | *ascq = 0x00; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 917 | |
| 918 | translate_done: |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 919 | if (verbose) |
| 920 | printk(KERN_ERR "ata%u: translated ATA stat/err 0x%02x/%02x " |
| 921 | "to SCSI SK/ASC/ASCQ 0x%x/%02x/%02x\n", |
| 922 | id, drv_stat, drv_err, *sk, *asc, *ascq); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 923 | return; |
| 924 | } |
| 925 | |
| 926 | /* |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 927 | * ata_gen_passthru_sense - Generate check condition sense block. |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 928 | * @qc: Command that completed. |
| 929 | * |
| 930 | * This function is specific to the ATA descriptor format sense |
| 931 | * block specified for the ATA pass through commands. Regardless |
| 932 | * of whether the command errored or not, return a sense |
| 933 | * block. Copy all controller registers into the sense |
| 934 | * block. Clear sense key, ASC & ASCQ if there is no error. |
| 935 | * |
| 936 | * LOCKING: |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 937 | * None. |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 938 | */ |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 939 | static void ata_gen_passthru_sense(struct ata_queued_cmd *qc) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 940 | { |
| 941 | struct scsi_cmnd *cmd = qc->scsicmd; |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 942 | struct ata_taskfile *tf = &qc->result_tf; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 943 | unsigned char *sb = cmd->sense_buffer; |
| 944 | unsigned char *desc = sb + 8; |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 945 | int verbose = qc->ap->ops->error_handler == NULL; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 946 | |
| 947 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); |
| 948 | |
Jeff Garzik | 0e5dec4 | 2005-10-06 09:40:20 -0400 | [diff] [blame] | 949 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 950 | |
| 951 | /* |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 952 | * Use ata_to_sense_error() to map status register bits |
| 953 | * onto sense key, asc & ascq. |
| 954 | */ |
Tejun Heo | 058e55e | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 955 | if (qc->err_mask || |
| 956 | tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 957 | ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature, |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 958 | &sb[1], &sb[2], &sb[3], verbose); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 959 | sb[1] &= 0x0f; |
| 960 | } |
| 961 | |
| 962 | /* |
| 963 | * Sense data is current and format is descriptor. |
| 964 | */ |
| 965 | sb[0] = 0x72; |
| 966 | |
| 967 | desc[0] = 0x09; |
| 968 | |
Tejun Heo | f38621b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 969 | /* set length of additional sense data */ |
| 970 | sb[7] = 14; |
| 971 | desc[1] = 12; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 972 | |
| 973 | /* |
| 974 | * Copy registers into sense buffer. |
| 975 | */ |
| 976 | desc[2] = 0x00; |
| 977 | desc[3] = tf->feature; /* == error reg */ |
| 978 | desc[5] = tf->nsect; |
| 979 | desc[7] = tf->lbal; |
| 980 | desc[9] = tf->lbam; |
| 981 | desc[11] = tf->lbah; |
| 982 | desc[12] = tf->device; |
| 983 | desc[13] = tf->command; /* == status reg */ |
| 984 | |
| 985 | /* |
| 986 | * Fill in Extend bit, and the high order bytes |
| 987 | * if applicable. |
| 988 | */ |
| 989 | if (tf->flags & ATA_TFLAG_LBA48) { |
| 990 | desc[2] |= 0x01; |
| 991 | desc[4] = tf->hob_nsect; |
| 992 | desc[6] = tf->hob_lbal; |
| 993 | desc[8] = tf->hob_lbam; |
| 994 | desc[10] = tf->hob_lbah; |
| 995 | } |
| 996 | } |
| 997 | |
| 998 | /** |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 999 | * ata_gen_ata_sense - generate a SCSI fixed sense block |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1000 | * @qc: Command that we are erroring out |
| 1001 | * |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 1002 | * Generate sense block for a failed ATA command @qc. Descriptor |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 1003 | * format is used to accommodate LBA48 block address. |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1004 | * |
| 1005 | * LOCKING: |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 1006 | * None. |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1007 | */ |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 1008 | static void ata_gen_ata_sense(struct ata_queued_cmd *qc) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1009 | { |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 1010 | struct ata_device *dev = qc->dev; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1011 | struct scsi_cmnd *cmd = qc->scsicmd; |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 1012 | struct ata_taskfile *tf = &qc->result_tf; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1013 | unsigned char *sb = cmd->sense_buffer; |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 1014 | unsigned char *desc = sb + 8; |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 1015 | int verbose = qc->ap->ops->error_handler == NULL; |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 1016 | u64 block; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1017 | |
| 1018 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); |
| 1019 | |
Jeff Garzik | 0e5dec4 | 2005-10-06 09:40:20 -0400 | [diff] [blame] | 1020 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1021 | |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 1022 | /* sense data is current and format is descriptor */ |
| 1023 | sb[0] = 0x72; |
| 1024 | |
| 1025 | /* Use ata_to_sense_error() to map status register bits |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1026 | * onto sense key, asc & ascq. |
| 1027 | */ |
Tejun Heo | 058e55e | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 1028 | if (qc->err_mask || |
| 1029 | tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 1030 | ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature, |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 1031 | &sb[1], &sb[2], &sb[3], verbose); |
| 1032 | sb[1] &= 0x0f; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1033 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 1035 | block = ata_tf_read_block(&qc->result_tf, dev); |
Jeff Garzik | 0274aa2 | 2005-06-22 13:50:56 -0400 | [diff] [blame] | 1036 | |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 1037 | /* information sense data descriptor */ |
| 1038 | sb[7] = 12; |
| 1039 | desc[0] = 0x00; |
| 1040 | desc[1] = 10; |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 1041 | |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 1042 | desc[2] |= 0x80; /* valid */ |
| 1043 | desc[6] = block >> 40; |
| 1044 | desc[7] = block >> 32; |
| 1045 | desc[8] = block >> 24; |
| 1046 | desc[9] = block >> 16; |
| 1047 | desc[10] = block >> 8; |
| 1048 | desc[11] = block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1049 | } |
| 1050 | |
Brian King | a6cce2a | 2006-03-17 17:04:15 -0600 | [diff] [blame] | 1051 | static void ata_scsi_sdev_config(struct scsi_device *sdev) |
| 1052 | { |
| 1053 | sdev->use_10_for_rw = 1; |
| 1054 | sdev->use_10_for_ms = 1; |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1055 | |
| 1056 | /* Schedule policy is determined by ->qc_defer() callback and |
| 1057 | * it needs to see every deferred qc. Set dev_blocked to 1 to |
| 1058 | * prevent SCSI midlayer from automatically deferring |
| 1059 | * requests. |
| 1060 | */ |
| 1061 | sdev->max_device_blocked = 1; |
Brian King | a6cce2a | 2006-03-17 17:04:15 -0600 | [diff] [blame] | 1062 | } |
| 1063 | |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1064 | /** |
| 1065 | * atapi_drain_needed - Check whether data transfer may overflow |
Randy Dunlap | 73fd8b6 | 2008-02-19 13:43:21 -0800 | [diff] [blame] | 1066 | * @rq: request to be checked |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1067 | * |
| 1068 | * ATAPI commands which transfer variable length data to host |
| 1069 | * might overflow due to application error or hardare bug. This |
| 1070 | * function checks whether overflow should be drained and ignored |
| 1071 | * for @request. |
| 1072 | * |
| 1073 | * LOCKING: |
| 1074 | * None. |
| 1075 | * |
| 1076 | * RETURNS: |
| 1077 | * 1 if ; otherwise, 0. |
| 1078 | */ |
| 1079 | static int atapi_drain_needed(struct request *rq) |
| 1080 | { |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 1081 | if (likely(rq->cmd_type != REQ_TYPE_BLOCK_PC)) |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1082 | return 0; |
| 1083 | |
Christoph Hellwig | 7b6d91d | 2010-08-07 18:20:39 +0200 | [diff] [blame] | 1084 | if (!blk_rq_bytes(rq) || (rq->cmd_flags & REQ_WRITE)) |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1085 | return 0; |
| 1086 | |
| 1087 | return atapi_cmd_type(rq->cmd[0]) == ATAPI_MISC; |
| 1088 | } |
| 1089 | |
| 1090 | static int ata_scsi_dev_config(struct scsi_device *sdev, |
| 1091 | struct ata_device *dev) |
Brian King | a6cce2a | 2006-03-17 17:04:15 -0600 | [diff] [blame] | 1092 | { |
shaohua.li@intel.com | 900e599 | 2011-05-06 11:35:31 -0600 | [diff] [blame] | 1093 | struct request_queue *q = sdev->request_queue; |
| 1094 | |
Elias Oltmanns | 45fabbb | 2008-09-21 11:54:08 +0200 | [diff] [blame] | 1095 | if (!ata_id_has_unload(dev->id)) |
| 1096 | dev->flags |= ATA_DFLAG_NO_UNLOAD; |
| 1097 | |
Tejun Heo | 914ed35 | 2006-11-01 18:39:55 +0900 | [diff] [blame] | 1098 | /* configure max sectors */ |
shaohua.li@intel.com | 900e599 | 2011-05-06 11:35:31 -0600 | [diff] [blame] | 1099 | blk_queue_max_hw_sectors(q, dev->max_sectors); |
Brian King | a6cce2a | 2006-03-17 17:04:15 -0600 | [diff] [blame] | 1100 | |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1101 | if (dev->class == ATA_DEV_ATAPI) { |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1102 | void *buf; |
| 1103 | |
Tejun Heo | 729a6a3 | 2011-01-20 13:59:06 +0100 | [diff] [blame] | 1104 | sdev->sector_size = ATA_SECT_SIZE; |
| 1105 | |
| 1106 | /* set DMA padding */ |
shaohua.li@intel.com | 900e599 | 2011-05-06 11:35:31 -0600 | [diff] [blame] | 1107 | blk_queue_update_dma_pad(q, ATA_DMA_PAD_SZ - 1); |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1108 | |
| 1109 | /* configure draining */ |
| 1110 | buf = kmalloc(ATAPI_MAX_DRAIN, q->bounce_gfp | GFP_KERNEL); |
| 1111 | if (!buf) { |
Joe Perches | a9a79df | 2011-04-15 15:51:59 -0700 | [diff] [blame] | 1112 | ata_dev_err(dev, "drain buffer allocation failed\n"); |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1113 | return -ENOMEM; |
| 1114 | } |
| 1115 | |
| 1116 | blk_queue_dma_drain(q, atapi_drain_needed, buf, ATAPI_MAX_DRAIN); |
| 1117 | } else { |
Grant Grundler | 295124d | 2010-08-17 10:56:53 -0700 | [diff] [blame] | 1118 | sdev->sector_size = ata_id_logical_sector_size(dev->id); |
Tejun Heo | d8cf538 | 2008-01-15 08:46:59 +0900 | [diff] [blame] | 1119 | sdev->manage_start_stop = 1; |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 1120 | } |
Tejun Heo | d8cf538 | 2008-01-15 08:46:59 +0900 | [diff] [blame] | 1121 | |
Tejun Heo | 729a6a3 | 2011-01-20 13:59:06 +0100 | [diff] [blame] | 1122 | /* |
| 1123 | * ata_pio_sectors() expects buffer for each sector to not cross |
| 1124 | * page boundary. Enforce it by requiring buffers to be sector |
| 1125 | * aligned, which works iff sector_size is not larger than |
| 1126 | * PAGE_SIZE. ATAPI devices also need the alignment as |
| 1127 | * IDENTIFY_PACKET is executed as ATA_PROT_PIO. |
| 1128 | */ |
| 1129 | if (sdev->sector_size > PAGE_SIZE) |
Joe Perches | a9a79df | 2011-04-15 15:51:59 -0700 | [diff] [blame] | 1130 | ata_dev_warn(dev, |
Tejun Heo | 729a6a3 | 2011-01-20 13:59:06 +0100 | [diff] [blame] | 1131 | "sector_size=%u > PAGE_SIZE, PIO may malfunction\n", |
| 1132 | sdev->sector_size); |
| 1133 | |
shaohua.li@intel.com | 900e599 | 2011-05-06 11:35:31 -0600 | [diff] [blame] | 1134 | blk_queue_update_dma_alignment(q, sdev->sector_size - 1); |
Tejun Heo | 729a6a3 | 2011-01-20 13:59:06 +0100 | [diff] [blame] | 1135 | |
Jeff Garzik | f26792d | 2007-10-29 17:18:39 -0400 | [diff] [blame] | 1136 | if (dev->flags & ATA_DFLAG_AN) |
| 1137 | set_bit(SDEV_EVT_MEDIA_CHANGE, sdev->supported_events); |
| 1138 | |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 1139 | if (dev->flags & ATA_DFLAG_NCQ) { |
| 1140 | int depth; |
| 1141 | |
| 1142 | depth = min(sdev->host->can_queue, ata_id_queue_depth(dev->id)); |
| 1143 | depth = min(ATA_MAX_QUEUE - 1, depth); |
Tejun Heo | 8a8bc22 | 2008-11-10 14:48:21 +0900 | [diff] [blame] | 1144 | scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, depth); |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 1145 | } |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1146 | |
shaohua.li@intel.com | 900e599 | 2011-05-06 11:35:31 -0600 | [diff] [blame] | 1147 | blk_queue_flush_queueable(q, false); |
| 1148 | |
Grant Grundler | 295124d | 2010-08-17 10:56:53 -0700 | [diff] [blame] | 1149 | dev->sdev = sdev; |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1150 | return 0; |
Brian King | a6cce2a | 2006-03-17 17:04:15 -0600 | [diff] [blame] | 1151 | } |
| 1152 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1153 | /** |
| 1154 | * ata_scsi_slave_config - Set SCSI device attributes |
| 1155 | * @sdev: SCSI device to examine |
| 1156 | * |
| 1157 | * This is called before we actually start reading |
| 1158 | * and writing to the device, to configure certain |
| 1159 | * SCSI mid-layer behaviors. |
| 1160 | * |
| 1161 | * LOCKING: |
| 1162 | * Defined by SCSI layer. We don't really care. |
| 1163 | */ |
| 1164 | |
| 1165 | int ata_scsi_slave_config(struct scsi_device *sdev) |
| 1166 | { |
Tejun Heo | 3153436 | 2006-05-31 18:27:36 +0900 | [diff] [blame] | 1167 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
| 1168 | struct ata_device *dev = __ata_scsi_find_dev(ap, sdev); |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1169 | int rc = 0; |
Tejun Heo | 3153436 | 2006-05-31 18:27:36 +0900 | [diff] [blame] | 1170 | |
Brian King | a6cce2a | 2006-03-17 17:04:15 -0600 | [diff] [blame] | 1171 | ata_scsi_sdev_config(sdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1172 | |
Tejun Heo | 3153436 | 2006-05-31 18:27:36 +0900 | [diff] [blame] | 1173 | if (dev) |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1174 | rc = ata_scsi_dev_config(sdev, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1175 | |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1176 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1177 | } |
| 1178 | |
| 1179 | /** |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 1180 | * ata_scsi_slave_destroy - SCSI device is about to be destroyed |
| 1181 | * @sdev: SCSI device to be destroyed |
| 1182 | * |
| 1183 | * @sdev is about to be destroyed for hot/warm unplugging. If |
| 1184 | * this unplugging was initiated by libata as indicated by NULL |
| 1185 | * dev->sdev, this function doesn't have to do anything. |
| 1186 | * Otherwise, SCSI layer initiated warm-unplug is in progress. |
| 1187 | * Clear dev->sdev, schedule the device for ATA detach and invoke |
| 1188 | * EH. |
| 1189 | * |
| 1190 | * LOCKING: |
| 1191 | * Defined by SCSI layer. We don't really care. |
| 1192 | */ |
| 1193 | void ata_scsi_slave_destroy(struct scsi_device *sdev) |
| 1194 | { |
| 1195 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1196 | struct request_queue *q = sdev->request_queue; |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 1197 | unsigned long flags; |
| 1198 | struct ata_device *dev; |
| 1199 | |
| 1200 | if (!ap->ops->error_handler) |
| 1201 | return; |
| 1202 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1203 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 1204 | dev = __ata_scsi_find_dev(ap, sdev); |
| 1205 | if (dev && dev->sdev) { |
| 1206 | /* SCSI device already in CANCEL state, no need to offline it */ |
| 1207 | dev->sdev = NULL; |
| 1208 | dev->flags |= ATA_DFLAG_DETACH; |
| 1209 | ata_port_schedule_eh(ap); |
| 1210 | } |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1211 | spin_unlock_irqrestore(ap->lock, flags); |
James Bottomley | fa2fc7f | 2008-02-19 11:36:57 +0100 | [diff] [blame] | 1212 | |
| 1213 | kfree(q->dma_drain_buffer); |
| 1214 | q->dma_drain_buffer = NULL; |
| 1215 | q->dma_drain_size = 0; |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 1216 | } |
| 1217 | |
| 1218 | /** |
Dan Williams | f6e6703 | 2011-09-20 15:10:33 -0700 | [diff] [blame] | 1219 | * __ata_change_queue_depth - helper for ata_scsi_change_queue_depth |
Marcos Paulo de Souza | 6d2dd05 | 2011-10-31 23:50:16 -0200 | [diff] [blame] | 1220 | * @ap: ATA port to which the device change the queue depth |
| 1221 | * @sdev: SCSI device to configure queue depth for |
| 1222 | * @queue_depth: new queue depth |
| 1223 | * @reason: calling context |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 1224 | * |
Dan Williams | f6e6703 | 2011-09-20 15:10:33 -0700 | [diff] [blame] | 1225 | * libsas and libata have different approaches for associating a sdev to |
| 1226 | * its ata_port. |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 1227 | * |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 1228 | */ |
Dan Williams | f6e6703 | 2011-09-20 15:10:33 -0700 | [diff] [blame] | 1229 | int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, |
| 1230 | int queue_depth, int reason) |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 1231 | { |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 1232 | struct ata_device *dev; |
Tejun Heo | 360f654 | 2006-09-30 19:45:00 +0900 | [diff] [blame] | 1233 | unsigned long flags; |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 1234 | |
Mike Christie | e881a17 | 2009-10-15 17:46:39 -0700 | [diff] [blame] | 1235 | if (reason != SCSI_QDEPTH_DEFAULT) |
| 1236 | return -EOPNOTSUPP; |
| 1237 | |
Tejun Heo | c3c70c4 | 2007-02-20 23:31:22 +0900 | [diff] [blame] | 1238 | if (queue_depth < 1 || queue_depth == sdev->queue_depth) |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 1239 | return sdev->queue_depth; |
| 1240 | |
| 1241 | dev = ata_scsi_find_dev(ap, sdev); |
| 1242 | if (!dev || !ata_dev_enabled(dev)) |
| 1243 | return sdev->queue_depth; |
| 1244 | |
Tejun Heo | c3c70c4 | 2007-02-20 23:31:22 +0900 | [diff] [blame] | 1245 | /* NCQ enabled? */ |
Tejun Heo | 360f654 | 2006-09-30 19:45:00 +0900 | [diff] [blame] | 1246 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | c3c70c4 | 2007-02-20 23:31:22 +0900 | [diff] [blame] | 1247 | dev->flags &= ~ATA_DFLAG_NCQ_OFF; |
| 1248 | if (queue_depth == 1 || !ata_ncq_enabled(dev)) { |
Tejun Heo | 360f654 | 2006-09-30 19:45:00 +0900 | [diff] [blame] | 1249 | dev->flags |= ATA_DFLAG_NCQ_OFF; |
Tejun Heo | c3c70c4 | 2007-02-20 23:31:22 +0900 | [diff] [blame] | 1250 | queue_depth = 1; |
| 1251 | } |
Tejun Heo | 360f654 | 2006-09-30 19:45:00 +0900 | [diff] [blame] | 1252 | spin_unlock_irqrestore(ap->lock, flags); |
| 1253 | |
Tejun Heo | c3c70c4 | 2007-02-20 23:31:22 +0900 | [diff] [blame] | 1254 | /* limit and apply queue depth */ |
| 1255 | queue_depth = min(queue_depth, sdev->host->can_queue); |
| 1256 | queue_depth = min(queue_depth, ata_id_queue_depth(dev->id)); |
| 1257 | queue_depth = min(queue_depth, ATA_MAX_QUEUE - 1); |
| 1258 | |
| 1259 | if (sdev->queue_depth == queue_depth) |
| 1260 | return -EINVAL; |
| 1261 | |
| 1262 | scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, queue_depth); |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 1263 | return queue_depth; |
| 1264 | } |
| 1265 | |
| 1266 | /** |
Dan Williams | f6e6703 | 2011-09-20 15:10:33 -0700 | [diff] [blame] | 1267 | * ata_scsi_change_queue_depth - SCSI callback for queue depth config |
| 1268 | * @sdev: SCSI device to configure queue depth for |
| 1269 | * @queue_depth: new queue depth |
| 1270 | * @reason: calling context |
| 1271 | * |
| 1272 | * This is libata standard hostt->change_queue_depth callback. |
| 1273 | * SCSI will call into this callback when user tries to set queue |
| 1274 | * depth via sysfs. |
| 1275 | * |
| 1276 | * LOCKING: |
| 1277 | * SCSI layer (we don't care) |
| 1278 | * |
| 1279 | * RETURNS: |
| 1280 | * Newly configured queue depth. |
| 1281 | */ |
| 1282 | int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth, |
| 1283 | int reason) |
| 1284 | { |
| 1285 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
| 1286 | |
| 1287 | return __ata_change_queue_depth(ap, sdev, queue_depth, reason); |
| 1288 | } |
| 1289 | |
| 1290 | /** |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1291 | * ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command |
| 1292 | * @qc: Storage for translated ATA taskfile |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1293 | * |
| 1294 | * Sets up an ATA taskfile to issue STANDBY (to stop) or READ VERIFY |
| 1295 | * (to start). Perhaps these commands should be preceded by |
| 1296 | * CHECK POWER MODE to see what power mode the device is already in. |
| 1297 | * [See SAT revision 5 at www.t10.org] |
| 1298 | * |
| 1299 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1300 | * spin_lock_irqsave(host lock) |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1301 | * |
| 1302 | * RETURNS: |
| 1303 | * Zero on success, non-zero on error. |
| 1304 | */ |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 1305 | 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] | 1306 | { |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1307 | struct scsi_cmnd *scmd = qc->scsicmd; |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1308 | struct ata_taskfile *tf = &qc->tf; |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 1309 | const u8 *cdb = scmd->cmnd; |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1310 | |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 1311 | if (scmd->cmd_len < 5) |
| 1312 | goto invalid_fld; |
| 1313 | |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1314 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; |
| 1315 | tf->protocol = ATA_PROT_NODATA; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1316 | if (cdb[1] & 0x1) { |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1317 | ; /* ignore IMMED bit, violates sat-r05 */ |
| 1318 | } |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1319 | if (cdb[4] & 0x2) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1320 | goto invalid_fld; /* LOEJ bit set not supported */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1321 | if (((cdb[4] >> 4) & 0xf) != 0) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1322 | goto invalid_fld; /* power conditions not supported */ |
Tejun Heo | e31e853 | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 1323 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1324 | if (cdb[4] & 0x1) { |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1325 | tf->nsect = 1; /* 1 sector, lba=0 */ |
Albert Lee | 9d5b130 | 2005-10-04 08:48:17 -0400 | [diff] [blame] | 1326 | |
| 1327 | if (qc->dev->flags & ATA_DFLAG_LBA) { |
Tejun Heo | c44078c | 2006-05-15 20:57:21 +0900 | [diff] [blame] | 1328 | tf->flags |= ATA_TFLAG_LBA; |
Albert Lee | 9d5b130 | 2005-10-04 08:48:17 -0400 | [diff] [blame] | 1329 | |
| 1330 | tf->lbah = 0x0; |
| 1331 | tf->lbam = 0x0; |
| 1332 | tf->lbal = 0x0; |
| 1333 | tf->device |= ATA_LBA; |
| 1334 | } else { |
| 1335 | /* CHS */ |
| 1336 | tf->lbal = 0x1; /* sect */ |
| 1337 | tf->lbam = 0x0; /* cyl low */ |
| 1338 | tf->lbah = 0x0; /* cyl high */ |
| 1339 | } |
| 1340 | |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1341 | tf->command = ATA_CMD_VERIFY; /* READ VERIFY */ |
Tejun Heo | 920a4b1 | 2007-05-04 21:28:48 +0200 | [diff] [blame] | 1342 | } else { |
Rafael J. Wysocki | 2a6e58d | 2009-01-19 20:56:43 +0100 | [diff] [blame] | 1343 | /* Some odd clown BIOSen issue spindown on power off (ACPI S4 |
| 1344 | * or S5) causing some drives to spin up and down again. |
| 1345 | */ |
| 1346 | if ((qc->ap->flags & ATA_FLAG_NO_POWEROFF_SPINDOWN) && |
| 1347 | system_state == SYSTEM_POWER_OFF) |
| 1348 | goto skip; |
| 1349 | |
| 1350 | if ((qc->ap->flags & ATA_FLAG_NO_HIBERNATE_SPINDOWN) && |
| 1351 | system_entering_hibernation()) |
| 1352 | goto skip; |
| 1353 | |
Robert Hancock | 78981a7 | 2007-01-30 00:59:18 -0800 | [diff] [blame] | 1354 | /* Issue ATA STANDBY IMMEDIATE command */ |
| 1355 | tf->command = ATA_CMD_STANDBYNOW1; |
Tejun Heo | 920a4b1 | 2007-05-04 21:28:48 +0200 | [diff] [blame] | 1356 | } |
Robert Hancock | 78981a7 | 2007-01-30 00:59:18 -0800 | [diff] [blame] | 1357 | |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1358 | /* |
| 1359 | * Standby and Idle condition timers could be implemented but that |
| 1360 | * would require libata to implement the Power condition mode page |
| 1361 | * and allow the user to change it. Changing mode pages requires |
| 1362 | * MODE SELECT to be implemented. |
| 1363 | */ |
| 1364 | |
| 1365 | return 0; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1366 | |
Rafael J. Wysocki | 2a6e58d | 2009-01-19 20:56:43 +0100 | [diff] [blame] | 1367 | invalid_fld: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1368 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1369 | /* "Invalid field in cbd" */ |
| 1370 | return 1; |
Rafael J. Wysocki | 2a6e58d | 2009-01-19 20:56:43 +0100 | [diff] [blame] | 1371 | skip: |
| 1372 | scmd->result = SAM_STAT_GOOD; |
| 1373 | return 1; |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1374 | } |
| 1375 | |
| 1376 | |
| 1377 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1378 | * ata_scsi_flush_xlat - Translate SCSI SYNCHRONIZE CACHE command |
| 1379 | * @qc: Storage for translated ATA taskfile |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1380 | * |
| 1381 | * Sets up an ATA taskfile to issue FLUSH CACHE or |
| 1382 | * FLUSH CACHE EXT. |
| 1383 | * |
| 1384 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1385 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1386 | * |
| 1387 | * RETURNS: |
| 1388 | * Zero on success, non-zero on error. |
| 1389 | */ |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 1390 | static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1391 | { |
| 1392 | struct ata_taskfile *tf = &qc->tf; |
| 1393 | |
| 1394 | tf->flags |= ATA_TFLAG_DEVICE; |
| 1395 | tf->protocol = ATA_PROT_NODATA; |
| 1396 | |
Tejun Heo | 6fc49ad | 2006-11-11 20:10:45 +0900 | [diff] [blame] | 1397 | if (qc->dev->flags & ATA_DFLAG_FLUSH_EXT) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1398 | tf->command = ATA_CMD_FLUSH_EXT; |
| 1399 | else |
| 1400 | tf->command = ATA_CMD_FLUSH; |
| 1401 | |
Tejun Heo | b666da3 | 2007-10-26 15:53:59 +0900 | [diff] [blame] | 1402 | /* flush is critical for IO integrity, consider it an IO command */ |
| 1403 | qc->flags |= ATA_QCFLAG_IO; |
| 1404 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1405 | return 0; |
| 1406 | } |
| 1407 | |
| 1408 | /** |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1409 | * scsi_6_lba_len - Get LBA and transfer length |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1410 | * @cdb: SCSI command to translate |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1411 | * |
| 1412 | * Calculate LBA and transfer length for 6-byte commands. |
| 1413 | * |
| 1414 | * RETURNS: |
| 1415 | * @plba: the LBA |
| 1416 | * @plen: the transfer length |
| 1417 | */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1418 | 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] | 1419 | { |
| 1420 | u64 lba = 0; |
Jeff Garzik | 6c7b7d2 | 2007-05-25 04:39:39 -0400 | [diff] [blame] | 1421 | u32 len; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1422 | |
| 1423 | VPRINTK("six-byte command\n"); |
| 1424 | |
Jeff Garzik | 6c7b7d2 | 2007-05-25 04:39:39 -0400 | [diff] [blame] | 1425 | lba |= ((u64)(cdb[1] & 0x1f)) << 16; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1426 | lba |= ((u64)cdb[2]) << 8; |
| 1427 | lba |= ((u64)cdb[3]); |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1428 | |
Jeff Garzik | 6c7b7d2 | 2007-05-25 04:39:39 -0400 | [diff] [blame] | 1429 | len = cdb[4]; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1430 | |
| 1431 | *plba = lba; |
| 1432 | *plen = len; |
| 1433 | } |
| 1434 | |
| 1435 | /** |
| 1436 | * scsi_10_lba_len - Get LBA and transfer length |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1437 | * @cdb: SCSI command to translate |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1438 | * |
| 1439 | * Calculate LBA and transfer length for 10-byte commands. |
| 1440 | * |
| 1441 | * RETURNS: |
| 1442 | * @plba: the LBA |
| 1443 | * @plen: the transfer length |
| 1444 | */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1445 | 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] | 1446 | { |
| 1447 | u64 lba = 0; |
| 1448 | u32 len = 0; |
| 1449 | |
| 1450 | VPRINTK("ten-byte command\n"); |
| 1451 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1452 | lba |= ((u64)cdb[2]) << 24; |
| 1453 | lba |= ((u64)cdb[3]) << 16; |
| 1454 | lba |= ((u64)cdb[4]) << 8; |
| 1455 | lba |= ((u64)cdb[5]); |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1456 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1457 | len |= ((u32)cdb[7]) << 8; |
| 1458 | len |= ((u32)cdb[8]); |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1459 | |
| 1460 | *plba = lba; |
| 1461 | *plen = len; |
| 1462 | } |
| 1463 | |
| 1464 | /** |
| 1465 | * scsi_16_lba_len - Get LBA and transfer length |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1466 | * @cdb: SCSI command to translate |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1467 | * |
| 1468 | * Calculate LBA and transfer length for 16-byte commands. |
| 1469 | * |
| 1470 | * RETURNS: |
| 1471 | * @plba: the LBA |
| 1472 | * @plen: the transfer length |
| 1473 | */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1474 | 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] | 1475 | { |
| 1476 | u64 lba = 0; |
| 1477 | u32 len = 0; |
| 1478 | |
| 1479 | VPRINTK("sixteen-byte command\n"); |
| 1480 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1481 | lba |= ((u64)cdb[2]) << 56; |
| 1482 | lba |= ((u64)cdb[3]) << 48; |
| 1483 | lba |= ((u64)cdb[4]) << 40; |
| 1484 | lba |= ((u64)cdb[5]) << 32; |
| 1485 | lba |= ((u64)cdb[6]) << 24; |
| 1486 | lba |= ((u64)cdb[7]) << 16; |
| 1487 | lba |= ((u64)cdb[8]) << 8; |
| 1488 | lba |= ((u64)cdb[9]); |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1489 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1490 | len |= ((u32)cdb[10]) << 24; |
| 1491 | len |= ((u32)cdb[11]) << 16; |
| 1492 | len |= ((u32)cdb[12]) << 8; |
| 1493 | len |= ((u32)cdb[13]); |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1494 | |
| 1495 | *plba = lba; |
| 1496 | *plen = len; |
| 1497 | } |
| 1498 | |
| 1499 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1500 | * ata_scsi_verify_xlat - Translate SCSI VERIFY command into an ATA one |
| 1501 | * @qc: Storage for translated ATA taskfile |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1502 | * |
| 1503 | * Converts SCSI VERIFY command to an ATA READ VERIFY command. |
| 1504 | * |
| 1505 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1506 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1507 | * |
| 1508 | * RETURNS: |
| 1509 | * Zero on success, non-zero on error. |
| 1510 | */ |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 1511 | static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1512 | { |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1513 | struct scsi_cmnd *scmd = qc->scsicmd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1514 | struct ata_taskfile *tf = &qc->tf; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1515 | struct ata_device *dev = qc->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1516 | u64 dev_sectors = qc->dev->n_sectors; |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 1517 | const u8 *cdb = scmd->cmnd; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1518 | u64 block; |
| 1519 | u32 n_block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1520 | |
| 1521 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 1522 | tf->protocol = ATA_PROT_NODATA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1523 | |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 1524 | if (cdb[0] == VERIFY) { |
| 1525 | if (scmd->cmd_len < 10) |
| 1526 | goto invalid_fld; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1527 | scsi_10_lba_len(cdb, &block, &n_block); |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 1528 | } else if (cdb[0] == VERIFY_16) { |
| 1529 | if (scmd->cmd_len < 16) |
| 1530 | goto invalid_fld; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1531 | scsi_16_lba_len(cdb, &block, &n_block); |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 1532 | } else |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1533 | goto invalid_fld; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1534 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1535 | if (!n_block) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1536 | goto nothing_to_do; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1537 | if (block >= dev_sectors) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1538 | goto out_of_range; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1539 | if ((block + n_block) > dev_sectors) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1540 | goto out_of_range; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1541 | |
Albert Lee | 0750669 | 2005-10-12 15:04:18 +0800 | [diff] [blame] | 1542 | if (dev->flags & ATA_DFLAG_LBA) { |
| 1543 | tf->flags |= ATA_TFLAG_LBA; |
| 1544 | |
Albert Lee | c6a33e2 | 2005-10-12 15:12:26 +0800 | [diff] [blame] | 1545 | if (lba_28_ok(block, n_block)) { |
| 1546 | /* use LBA28 */ |
| 1547 | tf->command = ATA_CMD_VERIFY; |
| 1548 | tf->device |= (block >> 24) & 0xf; |
| 1549 | } else if (lba_48_ok(block, n_block)) { |
| 1550 | if (!(dev->flags & ATA_DFLAG_LBA48)) |
| 1551 | goto out_of_range; |
Albert Lee | 0750669 | 2005-10-12 15:04:18 +0800 | [diff] [blame] | 1552 | |
| 1553 | /* use LBA48 */ |
| 1554 | tf->flags |= ATA_TFLAG_LBA48; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1555 | tf->command = ATA_CMD_VERIFY_EXT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1556 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1557 | tf->hob_nsect = (n_block >> 8) & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1558 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1559 | tf->hob_lbah = (block >> 40) & 0xff; |
| 1560 | tf->hob_lbam = (block >> 32) & 0xff; |
| 1561 | tf->hob_lbal = (block >> 24) & 0xff; |
Albert Lee | c6a33e2 | 2005-10-12 15:12:26 +0800 | [diff] [blame] | 1562 | } else |
| 1563 | /* request too large even for LBA48 */ |
| 1564 | goto out_of_range; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1565 | |
| 1566 | tf->nsect = n_block & 0xff; |
| 1567 | |
| 1568 | tf->lbah = (block >> 16) & 0xff; |
| 1569 | tf->lbam = (block >> 8) & 0xff; |
| 1570 | tf->lbal = block & 0xff; |
| 1571 | |
| 1572 | tf->device |= ATA_LBA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1573 | } else { |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1574 | /* CHS */ |
| 1575 | u32 sect, head, cyl, track; |
| 1576 | |
Albert Lee | c6a33e2 | 2005-10-12 15:12:26 +0800 | [diff] [blame] | 1577 | if (!lba_28_ok(block, n_block)) |
| 1578 | goto out_of_range; |
Albert Lee | 0750669 | 2005-10-12 15:04:18 +0800 | [diff] [blame] | 1579 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1580 | /* Convert LBA to CHS */ |
| 1581 | track = (u32)block / dev->sectors; |
| 1582 | cyl = track / dev->heads; |
| 1583 | head = track % dev->heads; |
| 1584 | sect = (u32)block % dev->sectors + 1; |
| 1585 | |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1586 | DPRINTK("block %u track %u cyl %u head %u sect %u\n", |
| 1587 | (u32)block, track, cyl, head, sect); |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 1588 | |
| 1589 | /* Check whether the converted CHS can fit. |
| 1590 | Cylinder: 0-65535 |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1591 | Head: 0-15 |
| 1592 | Sector: 1-255*/ |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 1593 | if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect)) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1594 | goto out_of_range; |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 1595 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1596 | tf->command = ATA_CMD_VERIFY; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1597 | tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */ |
| 1598 | tf->lbal = sect; |
| 1599 | tf->lbam = cyl; |
| 1600 | tf->lbah = cyl >> 8; |
| 1601 | tf->device |= head; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1602 | } |
| 1603 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1604 | return 0; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1605 | |
| 1606 | invalid_fld: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1607 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1608 | /* "Invalid field in cbd" */ |
| 1609 | return 1; |
| 1610 | |
| 1611 | out_of_range: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1612 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1613 | /* "Logical Block Address out of range" */ |
| 1614 | return 1; |
| 1615 | |
| 1616 | nothing_to_do: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1617 | scmd->result = SAM_STAT_GOOD; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1618 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1619 | } |
| 1620 | |
| 1621 | /** |
| 1622 | * ata_scsi_rw_xlat - Translate SCSI r/w command into an ATA one |
| 1623 | * @qc: Storage for translated ATA taskfile |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1624 | * |
| 1625 | * Converts any of six SCSI read/write commands into the |
| 1626 | * ATA counterpart, including starting sector (LBA), |
| 1627 | * sector count, and taking into account the device's LBA48 |
| 1628 | * support. |
| 1629 | * |
| 1630 | * Commands %READ_6, %READ_10, %READ_16, %WRITE_6, %WRITE_10, and |
| 1631 | * %WRITE_16 are currently supported. |
| 1632 | * |
| 1633 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1634 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1635 | * |
| 1636 | * RETURNS: |
| 1637 | * Zero on success, non-zero on error. |
| 1638 | */ |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 1639 | static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1640 | { |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1641 | struct scsi_cmnd *scmd = qc->scsicmd; |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 1642 | const u8 *cdb = scmd->cmnd; |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 1643 | unsigned int tf_flags = 0; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1644 | u64 block; |
| 1645 | u32 n_block; |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 1646 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1647 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1648 | 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] | 1649 | tf_flags |= ATA_TFLAG_WRITE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1650 | |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 1651 | /* Calculate the SCSI LBA, transfer length and FUA. */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1652 | switch (cdb[0]) { |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1653 | case READ_10: |
| 1654 | case WRITE_10: |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 1655 | if (unlikely(scmd->cmd_len < 10)) |
| 1656 | goto invalid_fld; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1657 | scsi_10_lba_len(cdb, &block, &n_block); |
| 1658 | if (unlikely(cdb[1] & (1 << 3))) |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 1659 | tf_flags |= ATA_TFLAG_FUA; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1660 | break; |
| 1661 | case READ_6: |
| 1662 | case WRITE_6: |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 1663 | if (unlikely(scmd->cmd_len < 6)) |
| 1664 | goto invalid_fld; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1665 | scsi_6_lba_len(cdb, &block, &n_block); |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1666 | |
| 1667 | /* for 6-byte r/w commands, transfer length 0 |
| 1668 | * means 256 blocks of data, not 0 block. |
| 1669 | */ |
Jeff Garzik | 76b2bf9 | 2005-08-29 19:24:43 -0400 | [diff] [blame] | 1670 | if (!n_block) |
| 1671 | n_block = 256; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1672 | break; |
| 1673 | case READ_16: |
| 1674 | case WRITE_16: |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 1675 | if (unlikely(scmd->cmd_len < 16)) |
| 1676 | goto invalid_fld; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1677 | scsi_16_lba_len(cdb, &block, &n_block); |
| 1678 | if (unlikely(cdb[1] & (1 << 3))) |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 1679 | tf_flags |= ATA_TFLAG_FUA; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1680 | break; |
| 1681 | default: |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1682 | DPRINTK("no-byte command\n"); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1683 | goto invalid_fld; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1684 | } |
| 1685 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1686 | /* Check and compose ATA command */ |
| 1687 | if (!n_block) |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1688 | /* For 10-byte and 16-byte SCSI R/W commands, transfer |
| 1689 | * length 0 means transfer 0 block of data. |
| 1690 | * However, for ATA R/W commands, sector count 0 means |
| 1691 | * 256 or 65536 sectors, not 0 sectors as in SCSI. |
Alan Cox | f51750d | 2005-11-07 17:06:33 +0000 | [diff] [blame] | 1692 | * |
| 1693 | * WARNING: one or two older ATA drives treat 0 as 0... |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1694 | */ |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1695 | goto nothing_to_do; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1696 | |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 1697 | qc->flags |= ATA_QCFLAG_IO; |
Grant Grundler | 295124d | 2010-08-17 10:56:53 -0700 | [diff] [blame] | 1698 | qc->nbytes = n_block * scmd->device->sector_size; |
Tejun Heo | 3dc1d88 | 2006-05-15 21:03:45 +0900 | [diff] [blame] | 1699 | |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 1700 | rc = ata_build_rw_tf(&qc->tf, qc->dev, block, n_block, tf_flags, |
| 1701 | qc->tag); |
| 1702 | if (likely(rc == 0)) |
| 1703 | return 0; |
Tejun Heo | 3dc1d88 | 2006-05-15 21:03:45 +0900 | [diff] [blame] | 1704 | |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 1705 | if (rc == -ERANGE) |
| 1706 | goto out_of_range; |
| 1707 | /* treat all other errors as -EINVAL, fall through */ |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1708 | invalid_fld: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1709 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1710 | /* "Invalid field in cbd" */ |
| 1711 | return 1; |
| 1712 | |
| 1713 | out_of_range: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1714 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1715 | /* "Logical Block Address out of range" */ |
| 1716 | return 1; |
| 1717 | |
| 1718 | nothing_to_do: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1719 | scmd->result = SAM_STAT_GOOD; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1720 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1721 | } |
| 1722 | |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1723 | static void ata_scsi_qc_complete(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1724 | { |
Tejun Heo | c31f571 | 2006-11-22 12:39:43 +0900 | [diff] [blame] | 1725 | struct ata_port *ap = qc->ap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1726 | struct scsi_cmnd *cmd = qc->scsicmd; |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 1727 | u8 *cdb = cmd->cmnd; |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1728 | int need_sense = (qc->err_mask != 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1729 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1730 | /* For ATA pass thru (SAT) commands, generate a sense block if |
| 1731 | * user mandated it or if there's an error. Note that if we |
| 1732 | * generate because the user forced us to, a check condition |
| 1733 | * is generated and the ATA register values are returned |
| 1734 | * whether the command completed successfully or not. If there |
| 1735 | * was no error, SK, ASC and ASCQ will all be zero. |
| 1736 | */ |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 1737 | if (((cdb[0] == ATA_16) || (cdb[0] == ATA_12)) && |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1738 | ((cdb[2] & 0x20) || need_sense)) { |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 1739 | ata_gen_passthru_sense(qc); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1740 | } else { |
| 1741 | if (!need_sense) { |
| 1742 | cmd->result = SAM_STAT_GOOD; |
| 1743 | } else { |
| 1744 | /* TODO: decide which descriptor format to use |
| 1745 | * for 48b LBA devices and call that here |
| 1746 | * instead of the fixed desc, which is only |
| 1747 | * good for smaller LBA (and maybe CHS?) |
| 1748 | * devices. |
| 1749 | */ |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 1750 | ata_gen_ata_sense(qc); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1751 | } |
| 1752 | } |
| 1753 | |
Tejun Heo | c31f571 | 2006-11-22 12:39:43 +0900 | [diff] [blame] | 1754 | if (need_sense && !ap->ops->error_handler) |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 1755 | ata_dump_status(ap->print_id, &qc->result_tf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1756 | |
| 1757 | qc->scsidone(cmd); |
| 1758 | |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1759 | ata_qc_free(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1760 | } |
| 1761 | |
| 1762 | /** |
| 1763 | * ata_scsi_translate - Translate then issue SCSI command to ATA device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1764 | * @dev: ATA device to which the command is addressed |
| 1765 | * @cmd: SCSI command to execute |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1766 | * @xlat_func: Actor which translates @cmd to an ATA taskfile |
| 1767 | * |
| 1768 | * Our ->queuecommand() function has decided that the SCSI |
| 1769 | * command issued can be directly translated into an ATA |
| 1770 | * command, rather than handled internally. |
| 1771 | * |
| 1772 | * This function sets up an ata_queued_cmd structure for the |
| 1773 | * SCSI command, and sends that ata_queued_cmd to the hardware. |
| 1774 | * |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1775 | * The xlat_func argument (actor) returns 0 if ready to execute |
| 1776 | * ATA command, else 1 to finish translation. If 1 is returned |
| 1777 | * then cmd->result (and possibly cmd->sense_buffer) are assumed |
| 1778 | * to be set reflecting an error condition or clean (early) |
| 1779 | * termination. |
| 1780 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1781 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1782 | * spin_lock_irqsave(host lock) |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 1783 | * |
| 1784 | * RETURNS: |
| 1785 | * 0 on success, SCSI_ML_QUEUE_DEVICE_BUSY if the command |
| 1786 | * needs to be deferred. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1787 | */ |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 1788 | static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd, |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 1789 | ata_xlat_func_t xlat_func) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1790 | { |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1791 | struct ata_port *ap = dev->link->ap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1792 | struct ata_queued_cmd *qc; |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1793 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1794 | |
| 1795 | VPRINTK("ENTER\n"); |
| 1796 | |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 1797 | qc = ata_scsi_qc_new(dev, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1798 | if (!qc) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1799 | goto err_mem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1800 | |
| 1801 | /* data is present; dma-map it */ |
| be7db05 | 2005-04-17 15:26:13 -0500 | [diff] [blame] | 1802 | if (cmd->sc_data_direction == DMA_FROM_DEVICE || |
| 1803 | cmd->sc_data_direction == DMA_TO_DEVICE) { |
Boaz Harrosh | 7120165 | 2007-09-18 17:48:50 +0200 | [diff] [blame] | 1804 | if (unlikely(scsi_bufflen(cmd) < 1)) { |
Joe Perches | a9a79df | 2011-04-15 15:51:59 -0700 | [diff] [blame] | 1805 | ata_dev_warn(dev, "WARNING: zero len r/w req\n"); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1806 | goto err_did; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1807 | } |
| 1808 | |
Boaz Harrosh | 7120165 | 2007-09-18 17:48:50 +0200 | [diff] [blame] | 1809 | ata_sg_init(qc, scsi_sglist(cmd), scsi_sg_count(cmd)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1810 | |
| 1811 | qc->dma_dir = cmd->sc_data_direction; |
| 1812 | } |
| 1813 | |
| 1814 | qc->complete_fn = ata_scsi_qc_complete; |
| 1815 | |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 1816 | if (xlat_func(qc)) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1817 | goto early_finish; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1818 | |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1819 | if (ap->ops->qc_defer) { |
| 1820 | if ((rc = ap->ops->qc_defer(qc))) |
| 1821 | goto defer; |
| 1822 | } |
| 1823 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1824 | /* select device, send command to hardware */ |
Tejun Heo | 8e0e694 | 2006-03-31 20:41:11 +0900 | [diff] [blame] | 1825 | ata_qc_issue(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1826 | |
| 1827 | VPRINTK("EXIT\n"); |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 1828 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1829 | |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1830 | early_finish: |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1831 | ata_qc_free(qc); |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 1832 | cmd->scsi_done(cmd); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1833 | DPRINTK("EXIT - early finish (good or error)\n"); |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 1834 | return 0; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1835 | |
| 1836 | err_did: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1837 | ata_qc_free(qc); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1838 | cmd->result = (DID_ERROR << 16); |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 1839 | cmd->scsi_done(cmd); |
Darrick J. Wong | 253b92e | 2006-11-14 09:55:41 -0500 | [diff] [blame] | 1840 | err_mem: |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1841 | DPRINTK("EXIT - internal\n"); |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 1842 | return 0; |
Tejun Heo | 3dc1d88 | 2006-05-15 21:03:45 +0900 | [diff] [blame] | 1843 | |
| 1844 | defer: |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1845 | ata_qc_free(qc); |
Tejun Heo | 3dc1d88 | 2006-05-15 21:03:45 +0900 | [diff] [blame] | 1846 | DPRINTK("EXIT - defer\n"); |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1847 | if (rc == ATA_DEFER_LINK) |
| 1848 | return SCSI_MLQUEUE_DEVICE_BUSY; |
| 1849 | else |
| 1850 | return SCSI_MLQUEUE_HOST_BUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1851 | } |
| 1852 | |
| 1853 | /** |
| 1854 | * ata_scsi_rbuf_get - Map response buffer. |
Randy Dunlap | ec2a20e | 2008-04-30 12:57:00 -0700 | [diff] [blame] | 1855 | * @cmd: SCSI command containing buffer to be mapped. |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1856 | * @flags: unsigned long variable to store irq enable status |
| 1857 | * @copy_in: copy in from user 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 | * Prepare buffer for simulated SCSI commands. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1860 | * |
| 1861 | * LOCKING: |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1862 | * spin_lock_irqsave(ata_scsi_rbuf_lock) on success |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1863 | * |
| 1864 | * RETURNS: |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1865 | * Pointer to response buffer. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1866 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1867 | static void *ata_scsi_rbuf_get(struct scsi_cmnd *cmd, bool copy_in, |
| 1868 | unsigned long *flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1869 | { |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1870 | spin_lock_irqsave(&ata_scsi_rbuf_lock, *flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1871 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1872 | memset(ata_scsi_rbuf, 0, ATA_SCSI_RBUF_SIZE); |
| 1873 | if (copy_in) |
| 1874 | sg_copy_to_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), |
| 1875 | ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE); |
| 1876 | return ata_scsi_rbuf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1877 | } |
| 1878 | |
| 1879 | /** |
| 1880 | * ata_scsi_rbuf_put - Unmap response buffer. |
| 1881 | * @cmd: SCSI command containing buffer to be unmapped. |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1882 | * @copy_out: copy out result |
| 1883 | * @flags: @flags passed to ata_scsi_rbuf_get() |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1884 | * |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1885 | * Returns rbuf buffer. The result is copied to @cmd's buffer if |
| 1886 | * @copy_back is true. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1887 | * |
| 1888 | * LOCKING: |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1889 | * Unlocks ata_scsi_rbuf_lock. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1890 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1891 | static inline void ata_scsi_rbuf_put(struct scsi_cmnd *cmd, bool copy_out, |
| 1892 | unsigned long *flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1893 | { |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1894 | if (copy_out) |
| 1895 | sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), |
| 1896 | ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE); |
| 1897 | spin_unlock_irqrestore(&ata_scsi_rbuf_lock, *flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1898 | } |
| 1899 | |
| 1900 | /** |
| 1901 | * ata_scsi_rbuf_fill - wrapper for SCSI command simulators |
| 1902 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1903 | * @actor: Callback hook for desired SCSI command simulator |
| 1904 | * |
| 1905 | * Takes care of the hard work of simulating a SCSI command... |
| 1906 | * Mapping the response buffer, calling the command's handler, |
| 1907 | * and handling the handler's return value. This return value |
| 1908 | * indicates whether the handler wishes the SCSI command to be |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1909 | * completed successfully (0), or not (in which case cmd->result |
| 1910 | * and sense buffer are assumed to be set). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1911 | * |
| 1912 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1913 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1914 | */ |
Tejun Heo | f0761be | 2008-04-28 17:16:52 +0900 | [diff] [blame] | 1915 | static void ata_scsi_rbuf_fill(struct ata_scsi_args *args, |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1916 | unsigned int (*actor)(struct ata_scsi_args *args, u8 *rbuf)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1917 | { |
| 1918 | u8 *rbuf; |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1919 | unsigned int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1920 | struct scsi_cmnd *cmd = args->cmd; |
Jeff Garzik | b445c56 | 2008-02-29 19:10:51 -0500 | [diff] [blame] | 1921 | unsigned long flags; |
| 1922 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1923 | rbuf = ata_scsi_rbuf_get(cmd, false, &flags); |
| 1924 | rc = actor(args, rbuf); |
| 1925 | ata_scsi_rbuf_put(cmd, rc == 0, &flags); |
Jeff Garzik | b445c56 | 2008-02-29 19:10:51 -0500 | [diff] [blame] | 1926 | |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1927 | if (rc == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1928 | cmd->result = SAM_STAT_GOOD; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1929 | args->done(cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1930 | } |
| 1931 | |
| 1932 | /** |
| 1933 | * ata_scsiop_inq_std - Simulate INQUIRY command |
| 1934 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1935 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1936 | * |
| 1937 | * Returns standard device identification data associated |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1938 | * with non-VPD INQUIRY command output. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1939 | * |
| 1940 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1941 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1942 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1943 | 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] | 1944 | { |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1945 | const u8 versions[] = { |
| 1946 | 0x60, /* SAM-3 (no version claimed) */ |
| 1947 | |
| 1948 | 0x03, |
| 1949 | 0x20, /* SBC-2 (no version claimed) */ |
| 1950 | |
| 1951 | 0x02, |
| 1952 | 0x60 /* SPC-3 (no version claimed) */ |
| 1953 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1954 | u8 hdr[] = { |
| 1955 | TYPE_DISK, |
| 1956 | 0, |
| 1957 | 0x5, /* claim SPC-3 version compatibility */ |
| 1958 | 2, |
| 1959 | 95 - 4 |
| 1960 | }; |
| 1961 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1962 | VPRINTK("ENTER\n"); |
| 1963 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1964 | /* set scsi removeable (RMB) bit per ata bit */ |
| 1965 | if (ata_id_removeable(args->id)) |
| 1966 | hdr[1] |= (1 << 7); |
| 1967 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1968 | memcpy(rbuf, hdr, sizeof(hdr)); |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1969 | memcpy(&rbuf[8], "ATA ", 8); |
| 1970 | ata_id_string(args->id, &rbuf[16], ATA_ID_PROD, 16); |
| 1971 | ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV, 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 | if (rbuf[32] == 0 || rbuf[32] == ' ') |
| 1974 | memcpy(&rbuf[32], "n/a ", 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1975 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1976 | memcpy(rbuf + 59, versions, sizeof(versions)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1977 | |
| 1978 | return 0; |
| 1979 | } |
| 1980 | |
| 1981 | /** |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1982 | * ata_scsiop_inq_00 - Simulate INQUIRY VPD page 0, list of pages |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1983 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1984 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1985 | * |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1986 | * Returns list of inquiry VPD pages available. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1987 | * |
| 1988 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1989 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1990 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 1991 | 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] | 1992 | { |
| 1993 | const u8 pages[] = { |
| 1994 | 0x00, /* page 0x00, this page */ |
| 1995 | 0x80, /* page 0x80, unit serial no page */ |
Matthew Wilcox | 1e9dbc9 | 2008-06-19 13:13:38 -0600 | [diff] [blame] | 1996 | 0x83, /* page 0x83, device ident page */ |
| 1997 | 0x89, /* page 0x89, ata info page */ |
Christoph Hellwig | 18f0f97 | 2009-11-17 10:00:47 -0500 | [diff] [blame] | 1998 | 0xb0, /* page 0xb0, block limits page */ |
Matthew Wilcox | 1e9dbc9 | 2008-06-19 13:13:38 -0600 | [diff] [blame] | 1999 | 0xb1, /* page 0xb1, block device characteristics page */ |
Martin K. Petersen | 02e0a60 | 2010-09-10 01:23:18 -0400 | [diff] [blame] | 2000 | 0xb2, /* page 0xb2, thin provisioning page */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2001 | }; |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2002 | |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 2003 | rbuf[3] = sizeof(pages); /* number of supported VPD pages */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2004 | memcpy(rbuf + 4, pages, sizeof(pages)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2005 | return 0; |
| 2006 | } |
| 2007 | |
| 2008 | /** |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 2009 | * ata_scsiop_inq_80 - Simulate INQUIRY VPD page 80, device serial number |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2010 | * @args: device IDENTIFY data / SCSI command of interest. |
| 2011 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2012 | * |
| 2013 | * Returns ATA device serial number. |
| 2014 | * |
| 2015 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2016 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2017 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2018 | 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] | 2019 | { |
| 2020 | const u8 hdr[] = { |
| 2021 | 0, |
| 2022 | 0x80, /* this page code */ |
| 2023 | 0, |
Tejun Heo | a0cf733 | 2007-01-02 20:18:49 +0900 | [diff] [blame] | 2024 | ATA_ID_SERNO_LEN, /* page len */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2025 | }; |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2026 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2027 | memcpy(rbuf, hdr, sizeof(hdr)); |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2028 | ata_id_string(args->id, (unsigned char *) &rbuf[4], |
| 2029 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2030 | return 0; |
| 2031 | } |
| 2032 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2033 | /** |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 2034 | * ata_scsiop_inq_83 - Simulate INQUIRY VPD page 83, device identity |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2035 | * @args: device IDENTIFY data / SCSI command of interest. |
| 2036 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2037 | * |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 2038 | * Yields two logical unit device identification designators: |
| 2039 | * - vendor specific ASCII containing the ATA serial number |
| 2040 | * - SAT defined "t10 vendor id based" containing ASCII vendor |
| 2041 | * name ("ATA "), model and serial numbers. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2042 | * |
| 2043 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2044 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2045 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2046 | 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] | 2047 | { |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 2048 | const int sat_model_serial_desc_len = 68; |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2049 | int num; |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 2050 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2051 | rbuf[1] = 0x83; /* this page code */ |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 2052 | num = 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2053 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2054 | /* piv=0, assoc=lu, code_set=ACSII, designator=vendor */ |
| 2055 | rbuf[num + 0] = 2; |
| 2056 | rbuf[num + 3] = ATA_ID_SERNO_LEN; |
| 2057 | num += 4; |
| 2058 | ata_id_string(args->id, (unsigned char *) rbuf + num, |
| 2059 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); |
| 2060 | num += ATA_ID_SERNO_LEN; |
| 2061 | |
| 2062 | /* SAT defined lu model and serial numbers descriptor */ |
| 2063 | /* piv=0, assoc=lu, code_set=ACSII, designator=t10 vendor id */ |
| 2064 | rbuf[num + 0] = 2; |
| 2065 | rbuf[num + 1] = 1; |
| 2066 | rbuf[num + 3] = sat_model_serial_desc_len; |
| 2067 | num += 4; |
| 2068 | memcpy(rbuf + num, "ATA ", 8); |
| 2069 | num += 8; |
| 2070 | ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_PROD, |
| 2071 | ATA_ID_PROD_LEN); |
| 2072 | num += ATA_ID_PROD_LEN; |
| 2073 | ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_SERNO, |
| 2074 | ATA_ID_SERNO_LEN); |
| 2075 | num += ATA_ID_SERNO_LEN; |
| 2076 | |
Hannes Reinecke | 6b3b9d7 | 2011-03-07 08:56:44 +0100 | [diff] [blame] | 2077 | if (ata_id_has_wwn(args->id)) { |
| 2078 | /* SAT defined lu world wide name */ |
| 2079 | /* piv=0, assoc=lu, code_set=binary, designator=NAA */ |
| 2080 | rbuf[num + 0] = 1; |
| 2081 | rbuf[num + 1] = 3; |
| 2082 | rbuf[num + 3] = ATA_ID_WWN_LEN; |
| 2083 | num += 4; |
| 2084 | ata_id_string(args->id, (unsigned char *) rbuf + num, |
| 2085 | ATA_ID_WWN, ATA_ID_WWN_LEN); |
| 2086 | num += ATA_ID_WWN_LEN; |
| 2087 | } |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 2088 | rbuf[3] = num - 4; /* page len (assume less than 256 bytes) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2089 | return 0; |
| 2090 | } |
| 2091 | |
| 2092 | /** |
Jeff Garzik | ad355b4 | 2007-09-21 20:38:03 -0400 | [diff] [blame] | 2093 | * ata_scsiop_inq_89 - Simulate INQUIRY VPD page 89, ATA info |
| 2094 | * @args: device IDENTIFY data / SCSI command of interest. |
| 2095 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
Jeff Garzik | ad355b4 | 2007-09-21 20:38:03 -0400 | [diff] [blame] | 2096 | * |
| 2097 | * Yields SAT-specified ATA VPD page. |
| 2098 | * |
| 2099 | * LOCKING: |
| 2100 | * spin_lock_irqsave(host lock) |
| 2101 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2102 | 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] | 2103 | { |
Jeff Garzik | ad355b4 | 2007-09-21 20:38:03 -0400 | [diff] [blame] | 2104 | struct ata_taskfile tf; |
Jeff Garzik | ad355b4 | 2007-09-21 20:38:03 -0400 | [diff] [blame] | 2105 | |
Jeff Garzik | ad355b4 | 2007-09-21 20:38:03 -0400 | [diff] [blame] | 2106 | memset(&tf, 0, sizeof(tf)); |
| 2107 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2108 | rbuf[1] = 0x89; /* our page code */ |
| 2109 | rbuf[2] = (0x238 >> 8); /* page size fixed at 238h */ |
| 2110 | rbuf[3] = (0x238 & 0xff); |
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[8], "linux ", 8); |
| 2113 | memcpy(&rbuf[16], "libata ", 16); |
| 2114 | memcpy(&rbuf[32], DRV_VERSION, 4); |
| 2115 | ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV, 4); |
Jeff Garzik | ad355b4 | 2007-09-21 20:38:03 -0400 | [diff] [blame] | 2116 | |
| 2117 | /* we don't store the ATA device signature, so we fake it */ |
| 2118 | |
| 2119 | tf.command = ATA_DRDY; /* really, this is Status reg */ |
| 2120 | tf.lbal = 0x1; |
| 2121 | tf.nsect = 0x1; |
| 2122 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2123 | ata_tf_to_fis(&tf, 0, 1, &rbuf[36]); /* TODO: PMP? */ |
| 2124 | rbuf[36] = 0x34; /* force D2H Reg FIS (34h) */ |
Jeff Garzik | ad355b4 | 2007-09-21 20:38:03 -0400 | [diff] [blame] | 2125 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2126 | rbuf[56] = ATA_CMD_ID_ATA; |
Jeff Garzik | ad355b4 | 2007-09-21 20:38:03 -0400 | [diff] [blame] | 2127 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2128 | memcpy(&rbuf[60], &args->id[0], 512); |
Jeff Garzik | ad355b4 | 2007-09-21 20:38:03 -0400 | [diff] [blame] | 2129 | return 0; |
| 2130 | } |
| 2131 | |
Christoph Hellwig | 18f0f97 | 2009-11-17 10:00:47 -0500 | [diff] [blame] | 2132 | static unsigned int ata_scsiop_inq_b0(struct ata_scsi_args *args, u8 *rbuf) |
| 2133 | { |
Grant Grundler | 295124d | 2010-08-17 10:56:53 -0700 | [diff] [blame] | 2134 | u16 min_io_sectors; |
Christoph Hellwig | 18f0f97 | 2009-11-17 10:00:47 -0500 | [diff] [blame] | 2135 | |
| 2136 | rbuf[1] = 0xb0; |
| 2137 | rbuf[3] = 0x3c; /* required VPD size with unmap support */ |
| 2138 | |
| 2139 | /* |
| 2140 | * Optimal transfer length granularity. |
| 2141 | * |
| 2142 | * This is always one physical block, but for disks with a smaller |
| 2143 | * logical than physical sector size we need to figure out what the |
| 2144 | * latter is. |
| 2145 | */ |
Grant Grundler | 295124d | 2010-08-17 10:56:53 -0700 | [diff] [blame] | 2146 | min_io_sectors = 1 << ata_id_log2_per_physical_sector(args->id); |
Christoph Hellwig | 18f0f97 | 2009-11-17 10:00:47 -0500 | [diff] [blame] | 2147 | put_unaligned_be16(min_io_sectors, &rbuf[6]); |
| 2148 | |
| 2149 | /* |
| 2150 | * Optimal unmap granularity. |
| 2151 | * |
| 2152 | * The ATA spec doesn't even know about a granularity or alignment |
| 2153 | * for the TRIM command. We can leave away most of the unmap related |
| 2154 | * VPD page entries, but we have specifify a granularity to signal |
| 2155 | * that we support some form of unmap - in thise case via WRITE SAME |
| 2156 | * with the unmap bit set. |
| 2157 | */ |
Martin K. Petersen | e78db4d | 2009-11-26 22:46:03 -0500 | [diff] [blame] | 2158 | if (ata_id_has_trim(args->id)) { |
Martin K. Petersen | 5f4e206 | 2011-05-17 22:13:23 -0400 | [diff] [blame] | 2159 | put_unaligned_be64(65535 * 512 / 8, &rbuf[36]); |
Christoph Hellwig | 18f0f97 | 2009-11-17 10:00:47 -0500 | [diff] [blame] | 2160 | put_unaligned_be32(1, &rbuf[28]); |
Martin K. Petersen | e78db4d | 2009-11-26 22:46:03 -0500 | [diff] [blame] | 2161 | } |
Christoph Hellwig | 18f0f97 | 2009-11-17 10:00:47 -0500 | [diff] [blame] | 2162 | |
| 2163 | return 0; |
| 2164 | } |
| 2165 | |
Matthew Wilcox | 1e9dbc9 | 2008-06-19 13:13:38 -0600 | [diff] [blame] | 2166 | static unsigned int ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf) |
| 2167 | { |
Martin K. Petersen | 4bca328 | 2009-05-15 00:40:35 -0400 | [diff] [blame] | 2168 | int form_factor = ata_id_form_factor(args->id); |
| 2169 | int media_rotation_rate = ata_id_rotation_rate(args->id); |
| 2170 | |
Matthew Wilcox | 1e9dbc9 | 2008-06-19 13:13:38 -0600 | [diff] [blame] | 2171 | rbuf[1] = 0xb1; |
| 2172 | rbuf[3] = 0x3c; |
Martin K. Petersen | 4bca328 | 2009-05-15 00:40:35 -0400 | [diff] [blame] | 2173 | rbuf[4] = media_rotation_rate >> 8; |
| 2174 | rbuf[5] = media_rotation_rate; |
| 2175 | rbuf[7] = form_factor; |
Matthew Wilcox | 1e9dbc9 | 2008-06-19 13:13:38 -0600 | [diff] [blame] | 2176 | |
| 2177 | return 0; |
| 2178 | } |
| 2179 | |
Martin K. Petersen | 02e0a60 | 2010-09-10 01:23:18 -0400 | [diff] [blame] | 2180 | static unsigned int ata_scsiop_inq_b2(struct ata_scsi_args *args, u8 *rbuf) |
| 2181 | { |
| 2182 | /* SCSI Thin Provisioning VPD page: SBC-3 rev 22 or later */ |
| 2183 | rbuf[1] = 0xb2; |
| 2184 | rbuf[3] = 0x4; |
| 2185 | rbuf[5] = 1 << 6; /* TPWS */ |
| 2186 | |
| 2187 | return 0; |
| 2188 | } |
| 2189 | |
Jeff Garzik | ad355b4 | 2007-09-21 20:38:03 -0400 | [diff] [blame] | 2190 | /** |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 2191 | * ata_scsiop_noop - Command handler that simply returns success. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2192 | * @args: device IDENTIFY data / SCSI command of interest. |
| 2193 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2194 | * |
| 2195 | * No operation. Simply returns success to caller, to indicate |
| 2196 | * that the caller should successfully complete this SCSI command. |
| 2197 | * |
| 2198 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2199 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2200 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2201 | 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] | 2202 | { |
| 2203 | VPRINTK("ENTER\n"); |
| 2204 | return 0; |
| 2205 | } |
| 2206 | |
| 2207 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2208 | * ata_msense_caching - Simulate MODE SENSE caching info page |
| 2209 | * @id: device IDENTIFY data |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2210 | * @buf: output buffer |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2211 | * |
| 2212 | * Generate a caching info page, which conditionally indicates |
| 2213 | * write caching to the SCSI layer, depending on device |
| 2214 | * capabilities. |
| 2215 | * |
| 2216 | * LOCKING: |
| 2217 | * None. |
| 2218 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2219 | static unsigned int ata_msense_caching(u16 *id, u8 *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2220 | { |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2221 | memcpy(buf, def_cache_mpage, sizeof(def_cache_mpage)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2222 | if (ata_id_wcache_enabled(id)) |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2223 | buf[2] |= (1 << 2); /* write cache enable */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2224 | if (!ata_id_rahead_enabled(id)) |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2225 | buf[12] |= (1 << 5); /* disable read ahead */ |
| 2226 | return sizeof(def_cache_mpage); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2227 | } |
| 2228 | |
| 2229 | /** |
| 2230 | * ata_msense_ctl_mode - Simulate MODE SENSE control mode page |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2231 | * @buf: output buffer |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2232 | * |
| 2233 | * Generate a generic MODE SENSE control mode page. |
| 2234 | * |
| 2235 | * LOCKING: |
| 2236 | * None. |
| 2237 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2238 | static unsigned int ata_msense_ctl_mode(u8 *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2239 | { |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2240 | memcpy(buf, def_control_mpage, sizeof(def_control_mpage)); |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2241 | return sizeof(def_control_mpage); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2242 | } |
| 2243 | |
| 2244 | /** |
| 2245 | * ata_msense_rw_recovery - Simulate MODE SENSE r/w error recovery page |
Randy Dunlap | ec2a20e | 2008-04-30 12:57:00 -0700 | [diff] [blame] | 2246 | * @buf: output buffer |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2247 | * |
| 2248 | * Generate a generic MODE SENSE r/w error recovery page. |
| 2249 | * |
| 2250 | * LOCKING: |
| 2251 | * None. |
| 2252 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2253 | static unsigned int ata_msense_rw_recovery(u8 *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2254 | { |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2255 | memcpy(buf, def_rw_recovery_mpage, sizeof(def_rw_recovery_mpage)); |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2256 | return sizeof(def_rw_recovery_mpage); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2257 | } |
| 2258 | |
Jens Axboe | 48bdc8e | 2006-01-30 16:09:35 +0100 | [diff] [blame] | 2259 | /* |
| 2260 | * We can turn this into a real blacklist if it's needed, for now just |
| 2261 | * blacklist any Maxtor BANC1G10 revision firmware |
| 2262 | */ |
| 2263 | static int ata_dev_supports_fua(u16 *id) |
| 2264 | { |
Tejun Heo | a0cf733 | 2007-01-02 20:18:49 +0900 | [diff] [blame] | 2265 | 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] | 2266 | |
Jeff Garzik | c3c013a | 2006-02-27 22:31:19 -0500 | [diff] [blame] | 2267 | if (!libata_fua) |
| 2268 | return 0; |
Jens Axboe | 48bdc8e | 2006-01-30 16:09:35 +0100 | [diff] [blame] | 2269 | if (!ata_id_has_fua(id)) |
| 2270 | return 0; |
| 2271 | |
Tejun Heo | a0cf733 | 2007-01-02 20:18:49 +0900 | [diff] [blame] | 2272 | ata_id_c_string(id, model, ATA_ID_PROD, sizeof(model)); |
| 2273 | ata_id_c_string(id, fw, ATA_ID_FW_REV, sizeof(fw)); |
Jens Axboe | 48bdc8e | 2006-01-30 16:09:35 +0100 | [diff] [blame] | 2274 | |
Tejun Heo | 2e02671 | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 2275 | if (strcmp(model, "Maxtor")) |
Jens Axboe | 48bdc8e | 2006-01-30 16:09:35 +0100 | [diff] [blame] | 2276 | return 1; |
Tejun Heo | 2e02671 | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 2277 | if (strcmp(fw, "BANC1G10")) |
Jens Axboe | 48bdc8e | 2006-01-30 16:09:35 +0100 | [diff] [blame] | 2278 | return 1; |
| 2279 | |
| 2280 | return 0; /* blacklisted */ |
| 2281 | } |
| 2282 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2283 | /** |
| 2284 | * ata_scsiop_mode_sense - Simulate MODE SENSE 6, 10 commands |
| 2285 | * @args: device IDENTIFY data / SCSI command of interest. |
| 2286 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2287 | * |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2288 | * Simulate MODE SENSE commands. Assume this is invoked for direct |
| 2289 | * access devices (e.g. disks) only. There should be no block |
| 2290 | * descriptor for other device types. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2291 | * |
| 2292 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2293 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2294 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2295 | 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] | 2296 | { |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 2297 | struct ata_device *dev = args->dev; |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2298 | u8 *scsicmd = args->cmd->cmnd, *p = rbuf; |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2299 | const u8 sat_blk_desc[] = { |
| 2300 | 0, 0, 0, 0, /* number of blocks: sat unspecified */ |
| 2301 | 0, |
| 2302 | 0, 0x2, 0x0 /* block length: 512 bytes */ |
| 2303 | }; |
| 2304 | u8 pg, spg; |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2305 | unsigned int ebd, page_control, six_byte; |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 2306 | u8 dpofua; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2307 | |
| 2308 | VPRINTK("ENTER\n"); |
| 2309 | |
| 2310 | six_byte = (scsicmd[0] == MODE_SENSE); |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2311 | ebd = !(scsicmd[1] & 0x8); /* dbd bit inverted == edb */ |
| 2312 | /* |
| 2313 | * LLBA bit in msense(10) ignored (compliant) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2314 | */ |
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 | page_control = scsicmd[2] >> 6; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2317 | switch (page_control) { |
| 2318 | case 0: /* current */ |
| 2319 | break; /* supported */ |
| 2320 | case 3: /* saved */ |
| 2321 | goto saving_not_supp; |
| 2322 | case 1: /* changeable */ |
| 2323 | case 2: /* defaults */ |
| 2324 | default: |
| 2325 | goto invalid_fld; |
| 2326 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2327 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2328 | if (six_byte) |
| 2329 | p += 4 + (ebd ? 8 : 0); |
| 2330 | else |
| 2331 | p += 8 + (ebd ? 8 : 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2332 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2333 | pg = scsicmd[2] & 0x3f; |
| 2334 | spg = scsicmd[3]; |
| 2335 | /* |
| 2336 | * No mode subpages supported (yet) but asking for _all_ |
| 2337 | * subpages may be valid |
| 2338 | */ |
| 2339 | if (spg && (spg != ALL_SUB_MPAGES)) |
| 2340 | goto invalid_fld; |
| 2341 | |
| 2342 | switch(pg) { |
| 2343 | case RW_RECOVERY_MPAGE: |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2344 | p += ata_msense_rw_recovery(p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2345 | break; |
| 2346 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2347 | case CACHE_MPAGE: |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2348 | p += ata_msense_caching(args->id, p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2349 | break; |
| 2350 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2351 | case CONTROL_MPAGE: |
| 2352 | p += ata_msense_ctl_mode(p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2353 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2354 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2355 | case ALL_MPAGES: |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2356 | p += ata_msense_rw_recovery(p); |
| 2357 | p += ata_msense_caching(args->id, p); |
| 2358 | p += ata_msense_ctl_mode(p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2359 | break; |
| 2360 | |
| 2361 | default: /* invalid page code */ |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2362 | goto invalid_fld; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2363 | } |
| 2364 | |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 2365 | dpofua = 0; |
Alan Cox | f79d409 | 2006-05-22 16:55:11 +0100 | [diff] [blame] | 2366 | if (ata_dev_supports_fua(args->id) && (dev->flags & ATA_DFLAG_LBA48) && |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 2367 | (!(dev->flags & ATA_DFLAG_PIO) || dev->multi_count)) |
| 2368 | dpofua = 1 << 4; |
| 2369 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2370 | if (six_byte) { |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2371 | rbuf[0] = p - rbuf - 1; |
| 2372 | rbuf[2] |= dpofua; |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2373 | if (ebd) { |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2374 | rbuf[3] = sizeof(sat_blk_desc); |
| 2375 | memcpy(rbuf + 4, sat_blk_desc, sizeof(sat_blk_desc)); |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2376 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2377 | } else { |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2378 | unsigned int output_len = p - rbuf - 2; |
| 2379 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2380 | rbuf[0] = output_len >> 8; |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2381 | rbuf[1] = output_len; |
| 2382 | rbuf[3] |= dpofua; |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2383 | if (ebd) { |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2384 | rbuf[7] = sizeof(sat_blk_desc); |
| 2385 | memcpy(rbuf + 8, sat_blk_desc, sizeof(sat_blk_desc)); |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2386 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2387 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2388 | return 0; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2389 | |
| 2390 | invalid_fld: |
| 2391 | ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x24, 0x0); |
| 2392 | /* "Invalid field in cbd" */ |
| 2393 | return 1; |
| 2394 | |
| 2395 | saving_not_supp: |
| 2396 | ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x39, 0x0); |
| 2397 | /* "Saving parameters not supported" */ |
| 2398 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2399 | } |
| 2400 | |
| 2401 | /** |
| 2402 | * ata_scsiop_read_cap - Simulate READ CAPACITY[ 16] commands |
| 2403 | * @args: device IDENTIFY data / SCSI command of interest. |
| 2404 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2405 | * |
| 2406 | * Simulate READ CAPACITY commands. |
| 2407 | * |
| 2408 | * LOCKING: |
Tejun Heo | 6a36261 | 2006-11-20 11:15:47 +0900 | [diff] [blame] | 2409 | * None. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2410 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2411 | 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] | 2412 | { |
Martin K. Petersen | 61d79a8 | 2009-05-15 00:40:34 -0400 | [diff] [blame] | 2413 | struct ata_device *dev = args->dev; |
| 2414 | u64 last_lba = dev->n_sectors - 1; /* LBA of the last block */ |
Grant Grundler | 295124d | 2010-08-17 10:56:53 -0700 | [diff] [blame] | 2415 | u32 sector_size; /* physical sector size in bytes */ |
| 2416 | u8 log2_per_phys; |
| 2417 | u16 lowest_aligned; |
Martin K. Petersen | 61d79a8 | 2009-05-15 00:40:34 -0400 | [diff] [blame] | 2418 | |
Grant Grundler | 295124d | 2010-08-17 10:56:53 -0700 | [diff] [blame] | 2419 | sector_size = ata_id_logical_sector_size(dev->id); |
| 2420 | log2_per_phys = ata_id_log2_per_physical_sector(dev->id); |
| 2421 | lowest_aligned = ata_id_logical_sector_offset(dev->id, log2_per_phys); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2422 | |
| 2423 | VPRINTK("ENTER\n"); |
| 2424 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2425 | if (args->cmd->cmnd[0] == READ_CAPACITY) { |
Tejun Heo | 6a36261 | 2006-11-20 11:15:47 +0900 | [diff] [blame] | 2426 | if (last_lba >= 0xffffffffULL) |
| 2427 | last_lba = 0xffffffff; |
Philip Pokorny | 0c144d0 | 2005-05-28 01:24:47 -0700 | [diff] [blame] | 2428 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2429 | /* sector count, 32-bit */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2430 | rbuf[0] = last_lba >> (8 * 3); |
| 2431 | rbuf[1] = last_lba >> (8 * 2); |
| 2432 | rbuf[2] = last_lba >> (8 * 1); |
| 2433 | rbuf[3] = last_lba; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2434 | |
| 2435 | /* sector size */ |
Grant Grundler | 295124d | 2010-08-17 10:56:53 -0700 | [diff] [blame] | 2436 | rbuf[4] = sector_size >> (8 * 3); |
| 2437 | rbuf[5] = sector_size >> (8 * 2); |
| 2438 | rbuf[6] = sector_size >> (8 * 1); |
| 2439 | rbuf[7] = sector_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2440 | } else { |
| 2441 | /* sector count, 64-bit */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2442 | rbuf[0] = last_lba >> (8 * 7); |
| 2443 | rbuf[1] = last_lba >> (8 * 6); |
| 2444 | rbuf[2] = last_lba >> (8 * 5); |
| 2445 | rbuf[3] = last_lba >> (8 * 4); |
| 2446 | rbuf[4] = last_lba >> (8 * 3); |
| 2447 | rbuf[5] = last_lba >> (8 * 2); |
| 2448 | rbuf[6] = last_lba >> (8 * 1); |
| 2449 | rbuf[7] = last_lba; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2450 | |
| 2451 | /* sector size */ |
Grant Grundler | 295124d | 2010-08-17 10:56:53 -0700 | [diff] [blame] | 2452 | rbuf[ 8] = sector_size >> (8 * 3); |
| 2453 | rbuf[ 9] = sector_size >> (8 * 2); |
| 2454 | rbuf[10] = sector_size >> (8 * 1); |
| 2455 | rbuf[11] = sector_size; |
Martin K. Petersen | 61d79a8 | 2009-05-15 00:40:34 -0400 | [diff] [blame] | 2456 | |
| 2457 | rbuf[12] = 0; |
Grant Grundler | 295124d | 2010-08-17 10:56:53 -0700 | [diff] [blame] | 2458 | rbuf[13] = log2_per_phys; |
Martin K. Petersen | 61d79a8 | 2009-05-15 00:40:34 -0400 | [diff] [blame] | 2459 | rbuf[14] = (lowest_aligned >> 8) & 0x3f; |
| 2460 | rbuf[15] = lowest_aligned; |
Christoph Hellwig | 18f0f97 | 2009-11-17 10:00:47 -0500 | [diff] [blame] | 2461 | |
Martin K. Petersen | e78db4d | 2009-11-26 22:46:03 -0500 | [diff] [blame] | 2462 | if (ata_id_has_trim(args->id)) { |
| 2463 | rbuf[14] |= 0x80; /* TPE */ |
| 2464 | |
| 2465 | if (ata_id_has_zero_after_trim(args->id)) |
| 2466 | rbuf[14] |= 0x40; /* TPRZ */ |
| 2467 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2468 | } |
| 2469 | |
| 2470 | return 0; |
| 2471 | } |
| 2472 | |
| 2473 | /** |
| 2474 | * ata_scsiop_report_luns - Simulate REPORT LUNS command |
| 2475 | * @args: device IDENTIFY data / SCSI command of interest. |
| 2476 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2477 | * |
| 2478 | * Simulate REPORT LUNS command. |
| 2479 | * |
| 2480 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2481 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2482 | */ |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2483 | 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] | 2484 | { |
| 2485 | VPRINTK("ENTER\n"); |
| 2486 | rbuf[3] = 8; /* just one lun, LUN 0, size 8 bytes */ |
| 2487 | |
| 2488 | return 0; |
| 2489 | } |
| 2490 | |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 2491 | static void atapi_sense_complete(struct ata_queued_cmd *qc) |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2492 | { |
Tejun Heo | 74e6c8c | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 2493 | if (qc->err_mask && ((qc->err_mask & AC_ERR_DEV) == 0)) { |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2494 | /* FIXME: not quite right; we don't want the |
| 2495 | * translation of taskfile registers into |
| 2496 | * a sense descriptors, since that's only |
| 2497 | * correct for ATA, not ATAPI |
| 2498 | */ |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 2499 | ata_gen_passthru_sense(qc); |
Tejun Heo | 74e6c8c | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 2500 | } |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2501 | |
| 2502 | qc->scsidone(qc->scsicmd); |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 2503 | ata_qc_free(qc); |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2504 | } |
| 2505 | |
| 2506 | /* is it pointless to prefer PIO for "safety reasons"? */ |
| 2507 | static inline int ata_pio_use_silly(struct ata_port *ap) |
| 2508 | { |
| 2509 | return (ap->flags & ATA_FLAG_PIO_DMA); |
| 2510 | } |
| 2511 | |
| 2512 | static void atapi_request_sense(struct ata_queued_cmd *qc) |
| 2513 | { |
| 2514 | struct ata_port *ap = qc->ap; |
| 2515 | struct scsi_cmnd *cmd = qc->scsicmd; |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2516 | |
| 2517 | DPRINTK("ATAPI request sense\n"); |
| 2518 | |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2519 | /* FIXME: is this needed? */ |
James Bottomley | 7ccd720 | 2008-01-17 11:56:24 -0600 | [diff] [blame] | 2520 | memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2521 | |
Tejun Heo | 127102a | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 2522 | #ifdef CONFIG_ATA_SFF |
James Bottomley | 855d854 | 2008-04-18 13:18:48 -0500 | [diff] [blame] | 2523 | if (ap->ops->sff_tf_read) |
| 2524 | ap->ops->sff_tf_read(ap, &qc->tf); |
Tejun Heo | 127102a | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 2525 | #endif |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2526 | |
| 2527 | /* fill these in, for the case where they are -not- overwritten */ |
| 2528 | cmd->sense_buffer[0] = 0x70; |
| 2529 | cmd->sense_buffer[2] = qc->tf.feature >> 4; |
| 2530 | |
| 2531 | ata_qc_reinit(qc); |
| 2532 | |
Tejun Heo | 93f8fec | 2007-12-05 16:43:01 +0900 | [diff] [blame] | 2533 | /* setup sg table and init transfer direction */ |
akpm@linux-foundation.org | cadb734 | 2008-01-15 16:01:52 -0800 | [diff] [blame] | 2534 | sg_init_one(&qc->sgent, cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE); |
Tejun Heo | 93f8fec | 2007-12-05 16:43:01 +0900 | [diff] [blame] | 2535 | ata_sg_init(qc, &qc->sgent, 1); |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2536 | qc->dma_dir = DMA_FROM_DEVICE; |
| 2537 | |
Tejun Heo | 6e7846e | 2006-02-12 23:32:58 +0900 | [diff] [blame] | 2538 | memset(&qc->cdb, 0, qc->dev->cdb_len); |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2539 | qc->cdb[0] = REQUEST_SENSE; |
| 2540 | qc->cdb[4] = SCSI_SENSE_BUFFERSIZE; |
| 2541 | |
| 2542 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 2543 | qc->tf.command = ATA_CMD_PACKET; |
| 2544 | |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2545 | if (ata_pio_use_silly(ap)) { |
Tejun Heo | 0dc3688 | 2007-12-18 16:34:43 -0500 | [diff] [blame] | 2546 | qc->tf.protocol = ATAPI_PROT_DMA; |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2547 | qc->tf.feature |= ATAPI_PKT_DMA; |
| 2548 | } else { |
Tejun Heo | 0dc3688 | 2007-12-18 16:34:43 -0500 | [diff] [blame] | 2549 | qc->tf.protocol = ATAPI_PROT_PIO; |
Alan Cox | 2db78dd | 2007-10-02 13:53:04 -0700 | [diff] [blame] | 2550 | qc->tf.lbam = SCSI_SENSE_BUFFERSIZE; |
| 2551 | qc->tf.lbah = 0; |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2552 | } |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2553 | qc->nbytes = SCSI_SENSE_BUFFERSIZE; |
| 2554 | |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2555 | qc->complete_fn = atapi_sense_complete; |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2556 | |
Tejun Heo | 8e0e694 | 2006-03-31 20:41:11 +0900 | [diff] [blame] | 2557 | ata_qc_issue(qc); |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2558 | |
| 2559 | DPRINTK("EXIT\n"); |
| 2560 | } |
| 2561 | |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 2562 | static void atapi_qc_complete(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2563 | { |
| 2564 | struct scsi_cmnd *cmd = qc->scsicmd; |
Albert Lee | a22e2eb | 2005-12-05 15:38:02 +0800 | [diff] [blame] | 2565 | unsigned int err_mask = qc->err_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2566 | |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 2567 | VPRINTK("ENTER, err_mask 0x%X\n", err_mask); |
Jeff Garzik | e12669e | 2005-10-05 18:39:23 -0400 | [diff] [blame] | 2568 | |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 2569 | /* handle completion from new EH */ |
| 2570 | if (unlikely(qc->ap->ops->error_handler && |
| 2571 | (err_mask || qc->flags & ATA_QCFLAG_SENSE_VALID))) { |
| 2572 | |
| 2573 | if (!(qc->flags & ATA_QCFLAG_SENSE_VALID)) { |
| 2574 | /* FIXME: not quite right; we don't want the |
| 2575 | * translation of taskfile registers into a |
| 2576 | * sense descriptors, since that's only |
| 2577 | * correct for ATA, not ATAPI |
| 2578 | */ |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 2579 | ata_gen_passthru_sense(qc); |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 2580 | } |
| 2581 | |
Tejun Heo | 22aac08 | 2006-08-08 14:08:59 +0900 | [diff] [blame] | 2582 | /* SCSI EH automatically locks door if sdev->locked is |
| 2583 | * set. Sometimes door lock request continues to |
| 2584 | * fail, for example, when no media is present. This |
| 2585 | * creates a loop - SCSI EH issues door lock which |
| 2586 | * fails and gets invoked again to acquire sense data |
| 2587 | * for the failed command. |
| 2588 | * |
| 2589 | * If door lock fails, always clear sdev->locked to |
| 2590 | * avoid this infinite loop. |
Tejun Heo | 2a5f07b | 2010-11-01 11:39:19 +0100 | [diff] [blame] | 2591 | * |
| 2592 | * This may happen before SCSI scan is complete. Make |
| 2593 | * sure qc->dev->sdev isn't NULL before dereferencing. |
Tejun Heo | 22aac08 | 2006-08-08 14:08:59 +0900 | [diff] [blame] | 2594 | */ |
Tejun Heo | 2a5f07b | 2010-11-01 11:39:19 +0100 | [diff] [blame] | 2595 | if (qc->cdb[0] == ALLOW_MEDIUM_REMOVAL && qc->dev->sdev) |
Tejun Heo | 22aac08 | 2006-08-08 14:08:59 +0900 | [diff] [blame] | 2596 | qc->dev->sdev->locked = 0; |
| 2597 | |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 2598 | qc->scsicmd->result = SAM_STAT_CHECK_CONDITION; |
| 2599 | qc->scsidone(cmd); |
| 2600 | ata_qc_free(qc); |
| 2601 | return; |
| 2602 | } |
| 2603 | |
| 2604 | /* successful completion or old EH failure path */ |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 2605 | if (unlikely(err_mask & AC_ERR_DEV)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2606 | cmd->result = SAM_STAT_CHECK_CONDITION; |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2607 | atapi_request_sense(qc); |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 2608 | return; |
Tejun Heo | 74e6c8c | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 2609 | } else if (unlikely(err_mask)) { |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 2610 | /* FIXME: not quite right; we don't want the |
| 2611 | * translation of taskfile registers into |
| 2612 | * a sense descriptors, since that's only |
| 2613 | * correct for ATA, not ATAPI |
| 2614 | */ |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 2615 | ata_gen_passthru_sense(qc); |
Tejun Heo | 74e6c8c | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 2616 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2617 | u8 *scsicmd = cmd->cmnd; |
| 2618 | |
Tony Battersby | fd71da4 | 2005-12-21 16:35:44 -0500 | [diff] [blame] | 2619 | if ((scsicmd[0] == INQUIRY) && ((scsicmd[1] & 0x03) == 0)) { |
Jeff Garzik | b445c56 | 2008-02-29 19:10:51 -0500 | [diff] [blame] | 2620 | unsigned long flags; |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2621 | u8 *buf; |
Jeff Garzik | b445c56 | 2008-02-29 19:10:51 -0500 | [diff] [blame] | 2622 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2623 | buf = ata_scsi_rbuf_get(cmd, true, &flags); |
Jeff Garzik | a15dbeb | 2005-10-05 15:02:14 -0400 | [diff] [blame] | 2624 | |
| 2625 | /* ATAPI devices typically report zero for their SCSI version, |
| 2626 | * and sometimes deviate from the spec WRT response data |
| 2627 | * format. If SCSI version is reported as zero like normal, |
| 2628 | * then we make the following fixups: 1) Fake MMC-5 version, |
| 2629 | * to indicate to the Linux scsi midlayer this is a modern |
| 2630 | * device. 2) Ensure response data format / ATAPI information |
| 2631 | * are always correct. |
| 2632 | */ |
Jeff Garzik | a15dbeb | 2005-10-05 15:02:14 -0400 | [diff] [blame] | 2633 | if (buf[2] == 0) { |
| 2634 | buf[2] = 0x5; |
| 2635 | buf[3] = 0x32; |
| 2636 | } |
| 2637 | |
Tejun Heo | 87340e9 | 2008-04-28 17:48:51 +0900 | [diff] [blame] | 2638 | ata_scsi_rbuf_put(cmd, true, &flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2639 | } |
Jeff Garzik | a15dbeb | 2005-10-05 15:02:14 -0400 | [diff] [blame] | 2640 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2641 | cmd->result = SAM_STAT_GOOD; |
| 2642 | } |
| 2643 | |
| 2644 | qc->scsidone(cmd); |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 2645 | ata_qc_free(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2646 | } |
| 2647 | /** |
| 2648 | * atapi_xlat - Initialize PACKET taskfile |
| 2649 | * @qc: command structure to be initialized |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2650 | * |
| 2651 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2652 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2653 | * |
| 2654 | * RETURNS: |
| 2655 | * Zero on success, non-zero on failure. |
| 2656 | */ |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 2657 | static unsigned int atapi_xlat(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2658 | { |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2659 | struct scsi_cmnd *scmd = qc->scsicmd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2660 | struct ata_device *dev = qc->dev; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2661 | int nodata = (scmd->sc_data_direction == DMA_NONE); |
Tejun Heo | 5895ef9 | 2008-06-17 12:36:26 +0900 | [diff] [blame] | 2662 | int using_pio = !nodata && (dev->flags & ATA_DFLAG_PIO); |
Alan Cox | 2db78dd | 2007-10-02 13:53:04 -0700 | [diff] [blame] | 2663 | unsigned int nbytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2664 | |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 2665 | memset(qc->cdb, 0, dev->cdb_len); |
| 2666 | memcpy(qc->cdb, scmd->cmnd, scmd->cmd_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2667 | |
| 2668 | qc->complete_fn = atapi_qc_complete; |
| 2669 | |
| 2670 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2671 | if (scmd->sc_data_direction == DMA_TO_DEVICE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2672 | qc->tf.flags |= ATA_TFLAG_WRITE; |
| 2673 | DPRINTK("direction: write\n"); |
| 2674 | } |
| 2675 | |
| 2676 | qc->tf.command = ATA_CMD_PACKET; |
Tejun Heo | aacda37 | 2008-03-18 17:47:43 +0900 | [diff] [blame] | 2677 | ata_qc_set_pc_nbytes(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2678 | |
Tejun Heo | e00f1ff | 2007-06-27 02:47:35 +0900 | [diff] [blame] | 2679 | /* check whether ATAPI DMA is safe */ |
Tejun Heo | 5895ef9 | 2008-06-17 12:36:26 +0900 | [diff] [blame] | 2680 | if (!nodata && !using_pio && atapi_check_dma(qc)) |
Tejun Heo | e00f1ff | 2007-06-27 02:47:35 +0900 | [diff] [blame] | 2681 | using_pio = 1; |
| 2682 | |
Tejun Heo | e190222 | 2007-11-26 20:58:02 +0900 | [diff] [blame] | 2683 | /* Some controller variants snoop this value for Packet |
| 2684 | * transfers to do state machine and FIFO management. Thus we |
| 2685 | * want to set it properly, and for DMA where it is |
| 2686 | * effectively meaningless. |
| 2687 | */ |
Tejun Heo | aacda37 | 2008-03-18 17:47:43 +0900 | [diff] [blame] | 2688 | nbytes = min(ata_qc_raw_nbytes(qc), (unsigned int)63 * 1024); |
Alan Cox | 2db78dd | 2007-10-02 13:53:04 -0700 | [diff] [blame] | 2689 | |
Tejun Heo | e190222 | 2007-11-26 20:58:02 +0900 | [diff] [blame] | 2690 | /* Most ATAPI devices which honor transfer chunk size don't |
| 2691 | * behave according to the spec when odd chunk size which |
| 2692 | * matches the transfer length is specified. If the number of |
| 2693 | * bytes to transfer is 2n+1. According to the spec, what |
| 2694 | * should happen is to indicate that 2n+1 is going to be |
| 2695 | * transferred and transfer 2n+2 bytes where the last byte is |
| 2696 | * padding. |
| 2697 | * |
| 2698 | * In practice, this doesn't happen. ATAPI devices first |
| 2699 | * indicate and transfer 2n bytes and then indicate and |
| 2700 | * transfer 2 bytes where the last byte is padding. |
| 2701 | * |
| 2702 | * This inconsistency confuses several controllers which |
| 2703 | * perform PIO using DMA such as Intel AHCIs and sil3124/32. |
| 2704 | * These controllers use actual number of transferred bytes to |
| 2705 | * update DMA poitner and transfer of 4n+2 bytes make those |
| 2706 | * controller push DMA pointer by 4n+4 bytes because SATA data |
| 2707 | * FISes are aligned to 4 bytes. This causes data corruption |
| 2708 | * and buffer overrun. |
| 2709 | * |
| 2710 | * Always setting nbytes to even number solves this problem |
| 2711 | * because then ATAPI devices don't have to split data at 2n |
| 2712 | * boundaries. |
| 2713 | */ |
| 2714 | if (nbytes & 0x1) |
| 2715 | nbytes++; |
| 2716 | |
Alan Cox | 2db78dd | 2007-10-02 13:53:04 -0700 | [diff] [blame] | 2717 | qc->tf.lbam = (nbytes & 0xFF); |
| 2718 | qc->tf.lbah = (nbytes >> 8); |
| 2719 | |
Tejun Heo | 5895ef9 | 2008-06-17 12:36:26 +0900 | [diff] [blame] | 2720 | if (nodata) |
| 2721 | qc->tf.protocol = ATAPI_PROT_NODATA; |
| 2722 | else if (using_pio) |
| 2723 | qc->tf.protocol = ATAPI_PROT_PIO; |
| 2724 | else { |
Tejun Heo | e00f1ff | 2007-06-27 02:47:35 +0900 | [diff] [blame] | 2725 | /* DMA data xfer */ |
Tejun Heo | 0dc3688 | 2007-12-18 16:34:43 -0500 | [diff] [blame] | 2726 | qc->tf.protocol = ATAPI_PROT_DMA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2727 | qc->tf.feature |= ATAPI_PKT_DMA; |
| 2728 | |
Tejun Heo | 9116300 | 2008-02-21 13:25:50 +0900 | [diff] [blame] | 2729 | if ((dev->flags & ATA_DFLAG_DMADIR) && |
| 2730 | (scmd->sc_data_direction != DMA_TO_DEVICE)) |
Albert Lee | 95de719 | 2006-04-04 10:57:18 +0800 | [diff] [blame] | 2731 | /* some SATA bridges need us to indicate data xfer direction */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2732 | qc->tf.feature |= ATAPI_DMADIR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2733 | } |
| 2734 | |
Alan Cox | 2db78dd | 2007-10-02 13:53:04 -0700 | [diff] [blame] | 2735 | |
| 2736 | /* FIXME: We need to translate 0x05 READ_BLOCK_LIMITS to a MODE_SENSE |
| 2737 | as ATAPI tape drives don't get this right otherwise */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2738 | return 0; |
| 2739 | } |
| 2740 | |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 2741 | 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] | 2742 | { |
Tejun Heo | 071f44b | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 2743 | if (!sata_pmp_attached(ap)) { |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 2744 | if (likely(devno < ata_link_max_devices(&ap->link))) |
| 2745 | return &ap->link.device[devno]; |
| 2746 | } else { |
| 2747 | if (likely(devno < ap->nr_pmp_links)) |
| 2748 | return &ap->pmp_link[devno].device[0]; |
| 2749 | } |
| 2750 | |
Tejun Heo | ab5b3a5 | 2006-05-31 18:27:34 +0900 | [diff] [blame] | 2751 | return NULL; |
| 2752 | } |
| 2753 | |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 2754 | static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap, |
| 2755 | const struct scsi_device *scsidev) |
Tejun Heo | ab5b3a5 | 2006-05-31 18:27:34 +0900 | [diff] [blame] | 2756 | { |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 2757 | int devno; |
Tejun Heo | ab5b3a5 | 2006-05-31 18:27:34 +0900 | [diff] [blame] | 2758 | |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 2759 | /* skip commands not addressed to targets we simulate */ |
Tejun Heo | 071f44b | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 2760 | if (!sata_pmp_attached(ap)) { |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 2761 | if (unlikely(scsidev->channel || scsidev->lun)) |
| 2762 | return NULL; |
| 2763 | devno = scsidev->id; |
| 2764 | } else { |
| 2765 | if (unlikely(scsidev->id || scsidev->lun)) |
| 2766 | return NULL; |
| 2767 | devno = scsidev->channel; |
| 2768 | } |
| 2769 | |
| 2770 | return ata_find_dev(ap, devno); |
Tejun Heo | ab5b3a5 | 2006-05-31 18:27:34 +0900 | [diff] [blame] | 2771 | } |
| 2772 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2773 | /** |
| 2774 | * ata_scsi_find_dev - lookup ata_device from scsi_cmnd |
| 2775 | * @ap: ATA port to which the device is attached |
| 2776 | * @scsidev: SCSI device from which we derive the ATA device |
| 2777 | * |
| 2778 | * Given various information provided in struct scsi_cmnd, |
| 2779 | * map that onto an ATA bus, and using that mapping |
| 2780 | * determine which ata_device is associated with the |
| 2781 | * SCSI command to be sent. |
| 2782 | * |
| 2783 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2784 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2785 | * |
| 2786 | * RETURNS: |
| 2787 | * Associated ATA device, or %NULL if not found. |
| 2788 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2789 | static struct ata_device * |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 2790 | 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] | 2791 | { |
Tejun Heo | ab5b3a5 | 2006-05-31 18:27:34 +0900 | [diff] [blame] | 2792 | struct ata_device *dev = __ata_scsi_find_dev(ap, scsidev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2793 | |
Tejun Heo | 2486fa5 | 2008-07-31 07:52:40 +0900 | [diff] [blame] | 2794 | if (unlikely(!dev || !ata_dev_enabled(dev))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2795 | return NULL; |
| 2796 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2797 | return dev; |
| 2798 | } |
| 2799 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2800 | /* |
| 2801 | * ata_scsi_map_proto - Map pass-thru protocol value to taskfile value. |
| 2802 | * @byte1: Byte 1 from pass-thru CDB. |
| 2803 | * |
| 2804 | * RETURNS: |
| 2805 | * ATA_PROT_UNKNOWN if mapping failed/unimplemented, protocol otherwise. |
| 2806 | */ |
| 2807 | static u8 |
| 2808 | ata_scsi_map_proto(u8 byte1) |
| 2809 | { |
| 2810 | switch((byte1 & 0x1e) >> 1) { |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 2811 | case 3: /* Non-data */ |
| 2812 | return ATA_PROT_NODATA; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2813 | |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 2814 | case 6: /* DMA */ |
| 2815 | case 10: /* UDMA Data-in */ |
| 2816 | case 11: /* UDMA Data-Out */ |
| 2817 | return ATA_PROT_DMA; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2818 | |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 2819 | case 4: /* PIO Data-in */ |
| 2820 | case 5: /* PIO Data-out */ |
| 2821 | return ATA_PROT_PIO; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2822 | |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 2823 | case 0: /* Hard Reset */ |
| 2824 | case 1: /* SRST */ |
| 2825 | case 8: /* Device Diagnostic */ |
| 2826 | case 9: /* Device Reset */ |
| 2827 | case 7: /* DMA Queued */ |
| 2828 | case 12: /* FPDMA */ |
| 2829 | case 15: /* Return Response Info */ |
| 2830 | default: /* Reserved */ |
| 2831 | break; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2832 | } |
| 2833 | |
| 2834 | return ATA_PROT_UNKNOWN; |
| 2835 | } |
| 2836 | |
| 2837 | /** |
| 2838 | * ata_scsi_pass_thru - convert ATA pass-thru CDB to taskfile |
| 2839 | * @qc: command structure to be initialized |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2840 | * |
| 2841 | * Handles either 12 or 16-byte versions of the CDB. |
| 2842 | * |
| 2843 | * RETURNS: |
| 2844 | * Zero on success, non-zero on failure. |
| 2845 | */ |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 2846 | static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2847 | { |
| 2848 | struct ata_taskfile *tf = &(qc->tf); |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2849 | struct scsi_cmnd *scmd = qc->scsicmd; |
Alan Cox | f79d409 | 2006-05-22 16:55:11 +0100 | [diff] [blame] | 2850 | struct ata_device *dev = qc->dev; |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 2851 | const u8 *cdb = scmd->cmnd; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2852 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2853 | if ((tf->protocol = ata_scsi_map_proto(cdb[1])) == ATA_PROT_UNKNOWN) |
Tejun Heo | 9a40525 | 2005-12-02 11:49:11 +0900 | [diff] [blame] | 2854 | goto invalid_fld; |
Jeff Garzik | 8190bdb | 2006-05-24 01:53:39 -0400 | [diff] [blame] | 2855 | |
Alan Cox | ae8d4ee | 2007-11-04 22:05:49 -0500 | [diff] [blame] | 2856 | /* |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2857 | * 12 and 16 byte CDBs use different offsets to |
| 2858 | * provide the various register values. |
| 2859 | */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2860 | if (cdb[0] == ATA_16) { |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2861 | /* |
| 2862 | * 16-byte CDB - may contain extended commands. |
| 2863 | * |
| 2864 | * If that is the case, copy the upper byte register values. |
| 2865 | */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2866 | if (cdb[1] & 0x01) { |
| 2867 | tf->hob_feature = cdb[3]; |
| 2868 | tf->hob_nsect = cdb[5]; |
| 2869 | tf->hob_lbal = cdb[7]; |
| 2870 | tf->hob_lbam = cdb[9]; |
| 2871 | tf->hob_lbah = cdb[11]; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2872 | tf->flags |= ATA_TFLAG_LBA48; |
| 2873 | } else |
| 2874 | tf->flags &= ~ATA_TFLAG_LBA48; |
| 2875 | |
| 2876 | /* |
| 2877 | * Always copy low byte, device and command registers. |
| 2878 | */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2879 | tf->feature = cdb[4]; |
| 2880 | tf->nsect = cdb[6]; |
| 2881 | tf->lbal = cdb[8]; |
| 2882 | tf->lbam = cdb[10]; |
| 2883 | tf->lbah = cdb[12]; |
| 2884 | tf->device = cdb[13]; |
| 2885 | tf->command = cdb[14]; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2886 | } else { |
| 2887 | /* |
| 2888 | * 12-byte CDB - incapable of extended commands. |
| 2889 | */ |
| 2890 | tf->flags &= ~ATA_TFLAG_LBA48; |
| 2891 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2892 | tf->feature = cdb[3]; |
| 2893 | tf->nsect = cdb[4]; |
| 2894 | tf->lbal = cdb[5]; |
| 2895 | tf->lbam = cdb[6]; |
| 2896 | tf->lbah = cdb[7]; |
| 2897 | tf->device = cdb[8]; |
| 2898 | tf->command = cdb[9]; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2899 | } |
Albert Lee | fa4453c | 2007-06-07 15:52:07 +0800 | [diff] [blame] | 2900 | |
| 2901 | /* enforce correct master/slave bit */ |
| 2902 | tf->device = dev->devno ? |
| 2903 | tf->device | ATA_DEV1 : tf->device & ~ATA_DEV1; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2904 | |
Tejun Heo | bd30add | 2009-09-03 16:08:11 +0900 | [diff] [blame] | 2905 | switch (tf->command) { |
Grant Grundler | 295124d | 2010-08-17 10:56:53 -0700 | [diff] [blame] | 2906 | /* READ/WRITE LONG use a non-standard sect_size */ |
Tejun Heo | bd30add | 2009-09-03 16:08:11 +0900 | [diff] [blame] | 2907 | case ATA_CMD_READ_LONG: |
| 2908 | case ATA_CMD_READ_LONG_ONCE: |
| 2909 | case ATA_CMD_WRITE_LONG: |
| 2910 | case ATA_CMD_WRITE_LONG_ONCE: |
| 2911 | if (tf->protocol != ATA_PROT_PIO || tf->nsect != 1) |
| 2912 | goto invalid_fld; |
| 2913 | qc->sect_size = scsi_bufflen(scmd); |
Grant Grundler | 295124d | 2010-08-17 10:56:53 -0700 | [diff] [blame] | 2914 | break; |
| 2915 | |
| 2916 | /* commands using reported Logical Block size (e.g. 512 or 4K) */ |
| 2917 | case ATA_CMD_CFA_WRITE_NE: |
| 2918 | case ATA_CMD_CFA_TRANS_SECT: |
| 2919 | case ATA_CMD_CFA_WRITE_MULT_NE: |
| 2920 | /* XXX: case ATA_CMD_CFA_WRITE_SECTORS_WITHOUT_ERASE: */ |
| 2921 | case ATA_CMD_READ: |
| 2922 | case ATA_CMD_READ_EXT: |
| 2923 | case ATA_CMD_READ_QUEUED: |
| 2924 | /* XXX: case ATA_CMD_READ_QUEUED_EXT: */ |
| 2925 | case ATA_CMD_FPDMA_READ: |
| 2926 | case ATA_CMD_READ_MULTI: |
| 2927 | case ATA_CMD_READ_MULTI_EXT: |
| 2928 | case ATA_CMD_PIO_READ: |
| 2929 | case ATA_CMD_PIO_READ_EXT: |
| 2930 | case ATA_CMD_READ_STREAM_DMA_EXT: |
| 2931 | case ATA_CMD_READ_STREAM_EXT: |
| 2932 | case ATA_CMD_VERIFY: |
| 2933 | case ATA_CMD_VERIFY_EXT: |
| 2934 | case ATA_CMD_WRITE: |
| 2935 | case ATA_CMD_WRITE_EXT: |
| 2936 | case ATA_CMD_WRITE_FUA_EXT: |
| 2937 | case ATA_CMD_WRITE_QUEUED: |
| 2938 | case ATA_CMD_WRITE_QUEUED_FUA_EXT: |
| 2939 | case ATA_CMD_FPDMA_WRITE: |
| 2940 | case ATA_CMD_WRITE_MULTI: |
| 2941 | case ATA_CMD_WRITE_MULTI_EXT: |
| 2942 | case ATA_CMD_WRITE_MULTI_FUA_EXT: |
| 2943 | case ATA_CMD_PIO_WRITE: |
| 2944 | case ATA_CMD_PIO_WRITE_EXT: |
| 2945 | case ATA_CMD_WRITE_STREAM_DMA_EXT: |
| 2946 | case ATA_CMD_WRITE_STREAM_EXT: |
| 2947 | qc->sect_size = scmd->device->sector_size; |
| 2948 | break; |
| 2949 | |
| 2950 | /* Everything else uses 512 byte "sectors" */ |
| 2951 | default: |
| 2952 | qc->sect_size = ATA_SECT_SIZE; |
Tejun Heo | bd30add | 2009-09-03 16:08:11 +0900 | [diff] [blame] | 2953 | } |
| 2954 | |
| 2955 | /* |
| 2956 | * Set flags so that all registers will be written, pass on |
| 2957 | * write indication (used for PIO/DMA setup), result TF is |
| 2958 | * copied back and we don't whine too much about its failure. |
| 2959 | */ |
Douglas Gilbert | bc496ed | 2010-02-01 13:11:38 -0500 | [diff] [blame] | 2960 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
Tejun Heo | bd30add | 2009-09-03 16:08:11 +0900 | [diff] [blame] | 2961 | if (scmd->sc_data_direction == DMA_TO_DEVICE) |
| 2962 | tf->flags |= ATA_TFLAG_WRITE; |
| 2963 | |
| 2964 | qc->flags |= ATA_QCFLAG_RESULT_TF | ATA_QCFLAG_QUIET; |
| 2965 | |
| 2966 | /* |
| 2967 | * Set transfer length. |
| 2968 | * |
| 2969 | * TODO: find out if we need to do more here to |
| 2970 | * cover scatter/gather case. |
| 2971 | */ |
| 2972 | ata_qc_set_pc_nbytes(qc); |
| 2973 | |
| 2974 | /* We may not issue DMA commands if no DMA mode is set */ |
| 2975 | if (tf->protocol == ATA_PROT_DMA && dev->dma_mode == 0) |
| 2976 | goto invalid_fld; |
| 2977 | |
Albert Lee | 1dce589 | 2007-06-07 15:49:22 +0800 | [diff] [blame] | 2978 | /* sanity check for pio multi commands */ |
| 2979 | if ((cdb[1] & 0xe0) && !is_multi_taskfile(tf)) |
| 2980 | goto invalid_fld; |
| 2981 | |
| 2982 | if (is_multi_taskfile(tf)) { |
| 2983 | unsigned int multi_count = 1 << (cdb[1] >> 5); |
| 2984 | |
| 2985 | /* compare the passed through multi_count |
| 2986 | * with the cached multi_count of libata |
| 2987 | */ |
| 2988 | if (multi_count != dev->multi_count) |
Joe Perches | a9a79df | 2011-04-15 15:51:59 -0700 | [diff] [blame] | 2989 | ata_dev_warn(dev, "invalid multi_count %u ignored\n", |
| 2990 | multi_count); |
Alan Cox | d26fc95 | 2007-07-06 19:13:52 -0400 | [diff] [blame] | 2991 | } |
Albert Lee | 1dce589 | 2007-06-07 15:49:22 +0800 | [diff] [blame] | 2992 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2993 | /* |
| 2994 | * Filter SET_FEATURES - XFER MODE command -- otherwise, |
| 2995 | * SET_FEATURES - XFER MODE must be preceded/succeeded |
| 2996 | * by an update to hardware-specific registers for each |
| 2997 | * controller (i.e. the reason for ->set_piomode(), |
| 2998 | * ->set_dmamode(), and ->post_set_mode() hooks). |
| 2999 | */ |
Tejun Heo | bd30add | 2009-09-03 16:08:11 +0900 | [diff] [blame] | 3000 | if (tf->command == ATA_CMD_SET_FEATURES && |
| 3001 | tf->feature == SETFEATURES_XFER) |
Tejun Heo | 9a40525 | 2005-12-02 11:49:11 +0900 | [diff] [blame] | 3002 | goto invalid_fld; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 3003 | |
| 3004 | /* |
Tejun Heo | bd30add | 2009-09-03 16:08:11 +0900 | [diff] [blame] | 3005 | * Filter TPM commands by default. These provide an |
| 3006 | * essentially uncontrolled encrypted "back door" between |
| 3007 | * applications and the disk. Set libata.allow_tpm=1 if you |
| 3008 | * have a real reason for wanting to use them. This ensures |
| 3009 | * that installed software cannot easily mess stuff up without |
| 3010 | * user intent. DVR type users will probably ship with this enabled |
| 3011 | * for movie content management. |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 3012 | * |
Tejun Heo | bd30add | 2009-09-03 16:08:11 +0900 | [diff] [blame] | 3013 | * Note that for ATA8 we can issue a DCS change and DCS freeze lock |
| 3014 | * for this and should do in future but that it is not sufficient as |
| 3015 | * DCS is an optional feature set. Thus we also do the software filter |
| 3016 | * so that we comply with the TC consortium stated goal that the user |
| 3017 | * can turn off TC features of their system. |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 3018 | */ |
Tejun Heo | bd30add | 2009-09-03 16:08:11 +0900 | [diff] [blame] | 3019 | if (tf->command >= 0x5C && tf->command <= 0x5F && !libata_allow_tpm) |
| 3020 | goto invalid_fld; |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 3021 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 3022 | return 0; |
Tejun Heo | 9a40525 | 2005-12-02 11:49:11 +0900 | [diff] [blame] | 3023 | |
| 3024 | invalid_fld: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 3025 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x00); |
Tejun Heo | 9a40525 | 2005-12-02 11:49:11 +0900 | [diff] [blame] | 3026 | /* "Invalid field in cdb" */ |
| 3027 | return 1; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 3028 | } |
| 3029 | |
Christoph Hellwig | 18f0f97 | 2009-11-17 10:00:47 -0500 | [diff] [blame] | 3030 | static unsigned int ata_scsi_write_same_xlat(struct ata_queued_cmd *qc) |
| 3031 | { |
| 3032 | struct ata_taskfile *tf = &qc->tf; |
| 3033 | struct scsi_cmnd *scmd = qc->scsicmd; |
| 3034 | struct ata_device *dev = qc->dev; |
| 3035 | const u8 *cdb = scmd->cmnd; |
| 3036 | u64 block; |
| 3037 | u32 n_block; |
| 3038 | u32 size; |
| 3039 | void *buf; |
| 3040 | |
| 3041 | /* we may not issue DMA commands if no DMA mode is set */ |
| 3042 | if (unlikely(!dev->dma_mode)) |
| 3043 | goto invalid_fld; |
| 3044 | |
| 3045 | if (unlikely(scmd->cmd_len < 16)) |
| 3046 | goto invalid_fld; |
| 3047 | scsi_16_lba_len(cdb, &block, &n_block); |
| 3048 | |
| 3049 | /* for now we only support WRITE SAME with the unmap bit set */ |
| 3050 | if (unlikely(!(cdb[1] & 0x8))) |
| 3051 | goto invalid_fld; |
| 3052 | |
| 3053 | /* |
| 3054 | * WRITE SAME always has a sector sized buffer as payload, this |
| 3055 | * should never be a multiple entry S/G list. |
| 3056 | */ |
| 3057 | if (!scsi_sg_count(scmd)) |
| 3058 | goto invalid_fld; |
| 3059 | |
| 3060 | buf = page_address(sg_page(scsi_sglist(scmd))); |
Martin K. Petersen | d0634c4 | 2009-11-26 12:00:43 -0500 | [diff] [blame] | 3061 | size = ata_set_lba_range_entries(buf, 512, block, n_block); |
Christoph Hellwig | 18f0f97 | 2009-11-17 10:00:47 -0500 | [diff] [blame] | 3062 | |
| 3063 | tf->protocol = ATA_PROT_DMA; |
| 3064 | tf->hob_feature = 0; |
| 3065 | tf->feature = ATA_DSM_TRIM; |
| 3066 | tf->hob_nsect = (size / 512) >> 8; |
| 3067 | tf->nsect = size / 512; |
| 3068 | tf->command = ATA_CMD_DSM; |
| 3069 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48 | |
| 3070 | ATA_TFLAG_WRITE; |
| 3071 | |
| 3072 | ata_qc_set_pc_nbytes(qc); |
| 3073 | |
| 3074 | return 0; |
| 3075 | |
| 3076 | invalid_fld: |
| 3077 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x00); |
| 3078 | /* "Invalid field in cdb" */ |
| 3079 | return 1; |
| 3080 | } |
| 3081 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3082 | /** |
| 3083 | * ata_get_xlat_func - check if SCSI to ATA translation is possible |
| 3084 | * @dev: ATA device |
| 3085 | * @cmd: SCSI command opcode to consider |
| 3086 | * |
| 3087 | * Look up the SCSI command given, and determine whether the |
| 3088 | * SCSI command is to be translated or simulated. |
| 3089 | * |
| 3090 | * RETURNS: |
| 3091 | * Pointer to translation function if possible, %NULL if not. |
| 3092 | */ |
| 3093 | |
| 3094 | static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd) |
| 3095 | { |
| 3096 | switch (cmd) { |
| 3097 | case READ_6: |
| 3098 | case READ_10: |
| 3099 | case READ_16: |
| 3100 | |
| 3101 | case WRITE_6: |
| 3102 | case WRITE_10: |
| 3103 | case WRITE_16: |
| 3104 | return ata_scsi_rw_xlat; |
| 3105 | |
Christoph Hellwig | 0cdd6eb | 2009-12-10 10:36:01 +0100 | [diff] [blame] | 3106 | case WRITE_SAME_16: |
Christoph Hellwig | 18f0f97 | 2009-11-17 10:00:47 -0500 | [diff] [blame] | 3107 | return ata_scsi_write_same_xlat; |
| 3108 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3109 | case SYNCHRONIZE_CACHE: |
| 3110 | if (ata_try_flush_cache(dev)) |
| 3111 | return ata_scsi_flush_xlat; |
| 3112 | break; |
| 3113 | |
| 3114 | case VERIFY: |
| 3115 | case VERIFY_16: |
| 3116 | return ata_scsi_verify_xlat; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 3117 | |
| 3118 | case ATA_12: |
| 3119 | case ATA_16: |
| 3120 | return ata_scsi_pass_thru; |
Jeff Garzik | da61396 | 2005-08-29 19:01:43 -0400 | [diff] [blame] | 3121 | |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 3122 | case START_STOP: |
| 3123 | return ata_scsi_start_stop_xlat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3124 | } |
| 3125 | |
| 3126 | return NULL; |
| 3127 | } |
| 3128 | |
| 3129 | /** |
| 3130 | * ata_scsi_dump_cdb - dump SCSI command contents to dmesg |
| 3131 | * @ap: ATA port to which the command was being sent |
| 3132 | * @cmd: SCSI command to dump |
| 3133 | * |
| 3134 | * Prints the contents of a SCSI command via printk(). |
| 3135 | */ |
| 3136 | |
| 3137 | static inline void ata_scsi_dump_cdb(struct ata_port *ap, |
| 3138 | struct scsi_cmnd *cmd) |
| 3139 | { |
| 3140 | #ifdef ATA_DEBUG |
| 3141 | struct scsi_device *scsidev = cmd->device; |
| 3142 | u8 *scsicmd = cmd->cmnd; |
| 3143 | |
| 3144 | 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] | 3145 | ap->print_id, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3146 | scsidev->channel, scsidev->id, scsidev->lun, |
| 3147 | scsicmd[0], scsicmd[1], scsicmd[2], scsicmd[3], |
| 3148 | scsicmd[4], scsicmd[5], scsicmd[6], scsicmd[7], |
| 3149 | scsicmd[8]); |
| 3150 | #endif |
| 3151 | } |
| 3152 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 3153 | static inline int __ata_scsi_queuecmd(struct scsi_cmnd *scmd, |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 3154 | struct ata_device *dev) |
Brian King | eb3f0f9 | 2006-03-23 17:30:02 -0600 | [diff] [blame] | 3155 | { |
Mark Lord | baf4fdf | 2007-08-08 01:08:45 +0900 | [diff] [blame] | 3156 | u8 scsi_op = scmd->cmnd[0]; |
| 3157 | ata_xlat_func_t xlat_func; |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 3158 | int rc = 0; |
| 3159 | |
Mark Lord | baf4fdf | 2007-08-08 01:08:45 +0900 | [diff] [blame] | 3160 | if (dev->class == ATA_DEV_ATA) { |
| 3161 | if (unlikely(!scmd->cmd_len || scmd->cmd_len > dev->cdb_len)) |
| 3162 | goto bad_cdb_len; |
| 3163 | |
| 3164 | xlat_func = ata_get_xlat_func(dev, scsi_op); |
| 3165 | } else { |
| 3166 | if (unlikely(!scmd->cmd_len)) |
| 3167 | goto bad_cdb_len; |
| 3168 | |
| 3169 | xlat_func = NULL; |
| 3170 | if (likely((scsi_op != ATA_16) || !atapi_passthru16)) { |
| 3171 | /* relay SCSI command to ATAPI device */ |
Mark Lord | 607126c | 2007-11-15 13:13:59 +0900 | [diff] [blame] | 3172 | int len = COMMAND_SIZE(scsi_op); |
| 3173 | if (unlikely(len > scmd->cmd_len || len > dev->cdb_len)) |
Mark Lord | baf4fdf | 2007-08-08 01:08:45 +0900 | [diff] [blame] | 3174 | goto bad_cdb_len; |
| 3175 | |
| 3176 | xlat_func = atapi_xlat; |
| 3177 | } else { |
| 3178 | /* ATA_16 passthru, treat as an ATA command */ |
| 3179 | if (unlikely(scmd->cmd_len > 16)) |
| 3180 | goto bad_cdb_len; |
| 3181 | |
| 3182 | xlat_func = ata_get_xlat_func(dev, scsi_op); |
| 3183 | } |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 3184 | } |
| 3185 | |
Mark Lord | baf4fdf | 2007-08-08 01:08:45 +0900 | [diff] [blame] | 3186 | if (xlat_func) |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 3187 | rc = ata_scsi_translate(dev, scmd, xlat_func); |
Mark Lord | baf4fdf | 2007-08-08 01:08:45 +0900 | [diff] [blame] | 3188 | else |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 3189 | ata_scsi_simulate(dev, scmd); |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 3190 | |
| 3191 | return rc; |
Mark Lord | baf4fdf | 2007-08-08 01:08:45 +0900 | [diff] [blame] | 3192 | |
| 3193 | bad_cdb_len: |
| 3194 | DPRINTK("bad CDB len=%u, scsi_op=0x%02x, max=%u\n", |
| 3195 | scmd->cmd_len, scsi_op, dev->cdb_len); |
| 3196 | scmd->result = DID_ERROR << 16; |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 3197 | scmd->scsi_done(scmd); |
Mark Lord | baf4fdf | 2007-08-08 01:08:45 +0900 | [diff] [blame] | 3198 | return 0; |
Brian King | eb3f0f9 | 2006-03-23 17:30:02 -0600 | [diff] [blame] | 3199 | } |
| 3200 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3201 | /** |
| 3202 | * ata_scsi_queuecmd - Issue SCSI cdb to libata-managed device |
Jeff Garzik | 23e701e | 2010-11-17 12:03:58 -0500 | [diff] [blame] | 3203 | * @shost: SCSI host of command to be sent |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3204 | * @cmd: SCSI command to be sent |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3205 | * |
| 3206 | * In some cases, this function translates SCSI commands into |
| 3207 | * ATA taskfiles, and queues the taskfiles to be sent to |
| 3208 | * hardware. In other cases, this function simulates a |
| 3209 | * SCSI device by evaluating and responding to certain |
| 3210 | * SCSI commands. This creates the overall effect of |
| 3211 | * ATA and ATAPI devices appearing as SCSI devices. |
| 3212 | * |
| 3213 | * LOCKING: |
Jeff Garzik | 23e701e | 2010-11-17 12:03:58 -0500 | [diff] [blame] | 3214 | * ATA host lock |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3215 | * |
| 3216 | * RETURNS: |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 3217 | * Return value from __ata_scsi_queuecmd() if @cmd can be queued, |
| 3218 | * 0 otherwise. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3219 | */ |
Jeff Garzik | 23e701e | 2010-11-17 12:03:58 -0500 | [diff] [blame] | 3220 | int ata_scsi_queuecmd(struct Scsi_Host *shost, struct scsi_cmnd *cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3221 | { |
| 3222 | struct ata_port *ap; |
| 3223 | struct ata_device *dev; |
| 3224 | struct scsi_device *scsidev = cmd->device; |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 3225 | int rc = 0; |
Jeff Garzik | 23e701e | 2010-11-17 12:03:58 -0500 | [diff] [blame] | 3226 | unsigned long irq_flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3227 | |
Jeff Garzik | 35bb94b | 2006-04-11 13:12:34 -0400 | [diff] [blame] | 3228 | ap = ata_shost_to_port(shost); |
Jeff Garzik | 005a5a0 | 2005-10-30 23:31:48 -0500 | [diff] [blame] | 3229 | |
Jeff Garzik | 23e701e | 2010-11-17 12:03:58 -0500 | [diff] [blame] | 3230 | spin_lock_irqsave(ap->lock, irq_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3231 | |
| 3232 | ata_scsi_dump_cdb(ap, cmd); |
| 3233 | |
| 3234 | dev = ata_scsi_find_dev(ap, scsidev); |
Brian King | eb3f0f9 | 2006-03-23 17:30:02 -0600 | [diff] [blame] | 3235 | if (likely(dev)) |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 3236 | rc = __ata_scsi_queuecmd(cmd, dev); |
Brian King | eb3f0f9 | 2006-03-23 17:30:02 -0600 | [diff] [blame] | 3237 | else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3238 | cmd->result = (DID_BAD_TARGET << 16); |
Jeff Garzik | 23e701e | 2010-11-17 12:03:58 -0500 | [diff] [blame] | 3239 | cmd->scsi_done(cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3240 | } |
| 3241 | |
Jeff Garzik | 23e701e | 2010-11-17 12:03:58 -0500 | [diff] [blame] | 3242 | spin_unlock_irqrestore(ap->lock, irq_flags); |
| 3243 | |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 3244 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3245 | } |
| 3246 | |
| 3247 | /** |
| 3248 | * ata_scsi_simulate - simulate SCSI command on ATA device |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 3249 | * @dev: the target device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3250 | * @cmd: SCSI command being sent to device. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3251 | * |
| 3252 | * Interprets and directly executes a select list of SCSI commands |
| 3253 | * that can be handled internally. |
| 3254 | * |
| 3255 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3256 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3257 | */ |
| 3258 | |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 3259 | void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3260 | { |
| 3261 | struct ata_scsi_args args; |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 3262 | const u8 *scsicmd = cmd->cmnd; |
Jeff Garzik | 4539414 | 2007-09-21 06:23:42 -0400 | [diff] [blame] | 3263 | u8 tmp8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3264 | |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 3265 | args.dev = dev; |
| 3266 | args.id = dev->id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3267 | args.cmd = cmd; |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 3268 | args.done = cmd->scsi_done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3269 | |
| 3270 | switch(scsicmd[0]) { |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3271 | /* TODO: worth improving? */ |
| 3272 | case FORMAT_UNIT: |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 3273 | ata_scsi_invalid_field(cmd); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3274 | break; |
| 3275 | |
| 3276 | case INQUIRY: |
| 3277 | if (scsicmd[1] & 2) /* is CmdDt set? */ |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 3278 | ata_scsi_invalid_field(cmd); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3279 | else if ((scsicmd[1] & 1) == 0) /* is EVPD clear? */ |
| 3280 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_std); |
| 3281 | else switch (scsicmd[2]) { |
| 3282 | case 0x00: |
| 3283 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_00); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3284 | break; |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3285 | case 0x80: |
| 3286 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_80); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3287 | break; |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3288 | case 0x83: |
| 3289 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_83); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3290 | break; |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3291 | case 0x89: |
| 3292 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_89); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3293 | break; |
Christoph Hellwig | 18f0f97 | 2009-11-17 10:00:47 -0500 | [diff] [blame] | 3294 | case 0xb0: |
| 3295 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b0); |
| 3296 | break; |
Matthew Wilcox | 1e9dbc9 | 2008-06-19 13:13:38 -0600 | [diff] [blame] | 3297 | case 0xb1: |
| 3298 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b1); |
| 3299 | break; |
Martin K. Petersen | 02e0a60 | 2010-09-10 01:23:18 -0400 | [diff] [blame] | 3300 | case 0xb2: |
| 3301 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b2); |
| 3302 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3303 | default: |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 3304 | ata_scsi_invalid_field(cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3305 | break; |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3306 | } |
| 3307 | break; |
| 3308 | |
| 3309 | case MODE_SENSE: |
| 3310 | case MODE_SENSE_10: |
| 3311 | ata_scsi_rbuf_fill(&args, ata_scsiop_mode_sense); |
| 3312 | break; |
| 3313 | |
| 3314 | case MODE_SELECT: /* unconditionally return */ |
| 3315 | case MODE_SELECT_10: /* bad-field-in-cdb */ |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 3316 | ata_scsi_invalid_field(cmd); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3317 | break; |
| 3318 | |
| 3319 | case READ_CAPACITY: |
| 3320 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); |
| 3321 | break; |
| 3322 | |
| 3323 | case SERVICE_ACTION_IN: |
| 3324 | if ((scsicmd[1] & 0x1f) == SAI_READ_CAPACITY_16) |
| 3325 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); |
| 3326 | else |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 3327 | ata_scsi_invalid_field(cmd); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3328 | break; |
| 3329 | |
| 3330 | case REPORT_LUNS: |
| 3331 | ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns); |
| 3332 | break; |
| 3333 | |
| 3334 | case REQUEST_SENSE: |
| 3335 | ata_scsi_set_sense(cmd, 0, 0, 0); |
| 3336 | cmd->result = (DRIVER_SENSE << 24); |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 3337 | cmd->scsi_done(cmd); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3338 | break; |
| 3339 | |
| 3340 | /* if we reach this, then writeback caching is disabled, |
| 3341 | * turning this into a no-op. |
| 3342 | */ |
| 3343 | case SYNCHRONIZE_CACHE: |
| 3344 | /* fall through */ |
| 3345 | |
| 3346 | /* no-op's, complete with success */ |
| 3347 | case REZERO_UNIT: |
| 3348 | case SEEK_6: |
| 3349 | case SEEK_10: |
| 3350 | case TEST_UNIT_READY: |
| 3351 | ata_scsi_rbuf_fill(&args, ata_scsiop_noop); |
| 3352 | break; |
| 3353 | |
| 3354 | case SEND_DIAGNOSTIC: |
| 3355 | tmp8 = scsicmd[1] & ~(1 << 3); |
| 3356 | if ((tmp8 == 0x4) && (!scsicmd[3]) && (!scsicmd[4])) |
| 3357 | ata_scsi_rbuf_fill(&args, ata_scsiop_noop); |
| 3358 | else |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 3359 | ata_scsi_invalid_field(cmd); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3360 | break; |
| 3361 | |
| 3362 | /* all other commands */ |
| 3363 | default: |
| 3364 | ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x20, 0x0); |
| 3365 | /* "Invalid command operation code" */ |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 3366 | cmd->scsi_done(cmd); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3367 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3368 | } |
| 3369 | } |
| 3370 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3371 | int ata_scsi_add_hosts(struct ata_host *host, struct scsi_host_template *sht) |
| 3372 | { |
| 3373 | int i, rc; |
| 3374 | |
| 3375 | for (i = 0; i < host->n_ports; i++) { |
| 3376 | struct ata_port *ap = host->ports[i]; |
| 3377 | struct Scsi_Host *shost; |
| 3378 | |
| 3379 | rc = -ENOMEM; |
| 3380 | shost = scsi_host_alloc(sht, sizeof(struct ata_port *)); |
| 3381 | if (!shost) |
| 3382 | goto err_alloc; |
| 3383 | |
Lin Ming | 9ee4f39 | 2011-12-05 09:20:28 +0800 | [diff] [blame] | 3384 | shost->eh_noresume = 1; |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3385 | *(struct ata_port **)&shost->hostdata[0] = ap; |
| 3386 | ap->scsi_host = shost; |
| 3387 | |
Gwendal Grignou | d902747 | 2010-05-25 12:31:38 -0700 | [diff] [blame] | 3388 | shost->transportt = ata_scsi_transport_template; |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3389 | shost->unique_id = ap->print_id; |
| 3390 | shost->max_id = 16; |
| 3391 | shost->max_lun = 1; |
| 3392 | shost->max_channel = 1; |
| 3393 | shost->max_cmd_len = 16; |
| 3394 | |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 3395 | /* Schedule policy is determined by ->qc_defer() |
| 3396 | * callback and it needs to see every deferred qc. |
| 3397 | * Set host_blocked to 1 to prevent SCSI midlayer from |
| 3398 | * automatically deferring requests. |
| 3399 | */ |
| 3400 | shost->max_host_blocked = 1; |
| 3401 | |
Lin Ming | 9a6d6a2 | 2011-12-05 09:20:23 +0800 | [diff] [blame] | 3402 | rc = scsi_add_host(ap->scsi_host, &ap->tdev); |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3403 | if (rc) |
| 3404 | goto err_add; |
| 3405 | } |
| 3406 | |
| 3407 | return 0; |
| 3408 | |
| 3409 | err_add: |
| 3410 | scsi_host_put(host->ports[i]->scsi_host); |
| 3411 | err_alloc: |
| 3412 | while (--i >= 0) { |
| 3413 | struct Scsi_Host *shost = host->ports[i]->scsi_host; |
| 3414 | |
| 3415 | scsi_remove_host(shost); |
| 3416 | scsi_host_put(shost); |
| 3417 | } |
| 3418 | return rc; |
| 3419 | } |
| 3420 | |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3421 | void ata_scsi_scan_host(struct ata_port *ap, int sync) |
Jeff Garzik | 644dd0c | 2005-10-03 15:55:19 -0400 | [diff] [blame] | 3422 | { |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3423 | int tries = 5; |
| 3424 | struct ata_device *last_failed_dev = NULL; |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3425 | struct ata_link *link; |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3426 | struct ata_device *dev; |
Jeff Garzik | 644dd0c | 2005-10-03 15:55:19 -0400 | [diff] [blame] | 3427 | |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3428 | repeat: |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 3429 | ata_for_each_link(link, ap, EDGE) { |
| 3430 | ata_for_each_dev(dev, link, ENABLED) { |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3431 | struct scsi_device *sdev; |
| 3432 | int channel = 0, id = 0; |
Jeff Garzik | 3f19ee8 | 2005-10-03 21:36:41 -0400 | [diff] [blame] | 3433 | |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 3434 | if (dev->sdev) |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3435 | continue; |
Tejun Heo | 3edebac | 2006-05-31 18:27:40 +0900 | [diff] [blame] | 3436 | |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3437 | if (ata_is_host_link(link)) |
| 3438 | id = dev->devno; |
| 3439 | else |
| 3440 | channel = link->pmp; |
| 3441 | |
| 3442 | sdev = __scsi_add_device(ap->scsi_host, channel, id, 0, |
| 3443 | NULL); |
| 3444 | if (!IS_ERR(sdev)) { |
| 3445 | dev->sdev = sdev; |
| 3446 | scsi_device_put(sdev); |
Grant Grundler | 295124d | 2010-08-17 10:56:53 -0700 | [diff] [blame] | 3447 | } else { |
| 3448 | dev->sdev = NULL; |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3449 | } |
Tejun Heo | 3edebac | 2006-05-31 18:27:40 +0900 | [diff] [blame] | 3450 | } |
Jeff Garzik | 3f19ee8 | 2005-10-03 21:36:41 -0400 | [diff] [blame] | 3451 | } |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3452 | |
| 3453 | /* If we scanned while EH was in progress or allocation |
| 3454 | * failure occurred, scan would have failed silently. Check |
| 3455 | * whether all devices are attached. |
| 3456 | */ |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 3457 | ata_for_each_link(link, ap, EDGE) { |
| 3458 | ata_for_each_dev(dev, link, ENABLED) { |
| 3459 | if (!dev->sdev) |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3460 | goto exit_loop; |
| 3461 | } |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3462 | } |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3463 | exit_loop: |
| 3464 | if (!link) |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3465 | return; |
| 3466 | |
| 3467 | /* we're missing some SCSI devices */ |
| 3468 | if (sync) { |
| 3469 | /* If caller requested synchrnous scan && we've made |
| 3470 | * any progress, sleep briefly and repeat. |
| 3471 | */ |
| 3472 | if (dev != last_failed_dev) { |
| 3473 | msleep(100); |
| 3474 | last_failed_dev = dev; |
| 3475 | goto repeat; |
| 3476 | } |
| 3477 | |
| 3478 | /* We might be failing to detect boot device, give it |
| 3479 | * a few more chances. |
| 3480 | */ |
| 3481 | if (--tries) { |
| 3482 | msleep(100); |
| 3483 | goto repeat; |
| 3484 | } |
| 3485 | |
Joe Perches | a9a79df | 2011-04-15 15:51:59 -0700 | [diff] [blame] | 3486 | ata_port_err(ap, |
| 3487 | "WARNING: synchronous SCSI scan failed without making any progress, switching to async\n"); |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3488 | } |
| 3489 | |
Tejun Heo | ad72cf9 | 2010-07-02 10:03:52 +0200 | [diff] [blame] | 3490 | queue_delayed_work(system_long_wq, &ap->hotplug_task, |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3491 | round_jiffies_relative(HZ)); |
Jeff Garzik | 644dd0c | 2005-10-03 15:55:19 -0400 | [diff] [blame] | 3492 | } |
Tejun Heo | 0ea035a | 2006-05-31 18:28:01 +0900 | [diff] [blame] | 3493 | |
| 3494 | /** |
| 3495 | * ata_scsi_offline_dev - offline attached SCSI device |
| 3496 | * @dev: ATA device to offline attached SCSI device for |
| 3497 | * |
| 3498 | * This function is called from ata_eh_hotplug() and responsible |
| 3499 | * for taking the SCSI device attached to @dev offline. This |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3500 | * function is called with host lock which protects dev->sdev |
Tejun Heo | 0ea035a | 2006-05-31 18:28:01 +0900 | [diff] [blame] | 3501 | * against clearing. |
| 3502 | * |
| 3503 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3504 | * spin_lock_irqsave(host lock) |
Tejun Heo | 0ea035a | 2006-05-31 18:28:01 +0900 | [diff] [blame] | 3505 | * |
| 3506 | * RETURNS: |
| 3507 | * 1 if attached SCSI device exists, 0 otherwise. |
| 3508 | */ |
| 3509 | int ata_scsi_offline_dev(struct ata_device *dev) |
| 3510 | { |
| 3511 | if (dev->sdev) { |
| 3512 | scsi_device_set_state(dev->sdev, SDEV_OFFLINE); |
| 3513 | return 1; |
| 3514 | } |
| 3515 | return 0; |
| 3516 | } |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3517 | |
| 3518 | /** |
| 3519 | * ata_scsi_remove_dev - remove attached SCSI device |
| 3520 | * @dev: ATA device to remove attached SCSI device for |
| 3521 | * |
| 3522 | * This function is called from ata_eh_scsi_hotplug() and |
| 3523 | * responsible for removing the SCSI device attached to @dev. |
| 3524 | * |
| 3525 | * LOCKING: |
| 3526 | * Kernel thread context (may sleep). |
| 3527 | */ |
| 3528 | static void ata_scsi_remove_dev(struct ata_device *dev) |
| 3529 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 3530 | struct ata_port *ap = dev->link->ap; |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3531 | struct scsi_device *sdev; |
| 3532 | unsigned long flags; |
| 3533 | |
| 3534 | /* Alas, we need to grab scan_mutex to ensure SCSI device |
| 3535 | * state doesn't change underneath us and thus |
| 3536 | * scsi_device_get() always succeeds. The mutex locking can |
| 3537 | * be removed if there is __scsi_device_get() interface which |
| 3538 | * increments reference counts regardless of device state. |
| 3539 | */ |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3540 | mutex_lock(&ap->scsi_host->scan_mutex); |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 3541 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3542 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3543 | /* clearing dev->sdev is protected by host lock */ |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3544 | sdev = dev->sdev; |
| 3545 | dev->sdev = NULL; |
| 3546 | |
| 3547 | if (sdev) { |
| 3548 | /* If user initiated unplug races with us, sdev can go |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3549 | * away underneath us after the host lock and |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3550 | * scan_mutex are released. Hold onto it. |
| 3551 | */ |
| 3552 | if (scsi_device_get(sdev) == 0) { |
| 3553 | /* The following ensures the attached sdev is |
| 3554 | * offline on return from ata_scsi_offline_dev() |
| 3555 | * regardless it wins or loses the race |
| 3556 | * against this function. |
| 3557 | */ |
| 3558 | scsi_device_set_state(sdev, SDEV_OFFLINE); |
| 3559 | } else { |
| 3560 | WARN_ON(1); |
| 3561 | sdev = NULL; |
| 3562 | } |
| 3563 | } |
| 3564 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 3565 | spin_unlock_irqrestore(ap->lock, flags); |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3566 | mutex_unlock(&ap->scsi_host->scan_mutex); |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3567 | |
| 3568 | if (sdev) { |
Joe Perches | a9a79df | 2011-04-15 15:51:59 -0700 | [diff] [blame] | 3569 | ata_dev_info(dev, "detaching (SCSI %s)\n", |
| 3570 | dev_name(&sdev->sdev_gendev)); |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3571 | |
| 3572 | scsi_remove_device(sdev); |
| 3573 | scsi_device_put(sdev); |
| 3574 | } |
| 3575 | } |
| 3576 | |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3577 | static void ata_scsi_handle_link_detach(struct ata_link *link) |
| 3578 | { |
| 3579 | struct ata_port *ap = link->ap; |
| 3580 | struct ata_device *dev; |
| 3581 | |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 3582 | ata_for_each_dev(dev, link, ALL) { |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3583 | unsigned long flags; |
| 3584 | |
| 3585 | if (!(dev->flags & ATA_DFLAG_DETACHED)) |
| 3586 | continue; |
| 3587 | |
| 3588 | spin_lock_irqsave(ap->lock, flags); |
| 3589 | dev->flags &= ~ATA_DFLAG_DETACHED; |
| 3590 | spin_unlock_irqrestore(ap->lock, flags); |
| 3591 | |
| 3592 | ata_scsi_remove_dev(dev); |
| 3593 | } |
| 3594 | } |
| 3595 | |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3596 | /** |
Kristen Carlson Accardi | 2f29496 | 2007-08-15 04:11:25 -0400 | [diff] [blame] | 3597 | * ata_scsi_media_change_notify - send media change event |
Randy Dunlap | c5d0e6a | 2007-10-15 17:29:46 -0700 | [diff] [blame] | 3598 | * @dev: Pointer to the disk device with media change event |
Kristen Carlson Accardi | 2f29496 | 2007-08-15 04:11:25 -0400 | [diff] [blame] | 3599 | * |
| 3600 | * Tell the block layer to send a media change notification |
| 3601 | * event. |
| 3602 | * |
| 3603 | * LOCKING: |
Tejun Heo | 854c73a | 2007-09-23 13:14:11 +0900 | [diff] [blame] | 3604 | * spin_lock_irqsave(host lock) |
Kristen Carlson Accardi | 2f29496 | 2007-08-15 04:11:25 -0400 | [diff] [blame] | 3605 | */ |
Tejun Heo | 854c73a | 2007-09-23 13:14:11 +0900 | [diff] [blame] | 3606 | void ata_scsi_media_change_notify(struct ata_device *dev) |
Kristen Carlson Accardi | 2f29496 | 2007-08-15 04:11:25 -0400 | [diff] [blame] | 3607 | { |
Tejun Heo | 854c73a | 2007-09-23 13:14:11 +0900 | [diff] [blame] | 3608 | if (dev->sdev) |
Jeff Garzik | f26792d | 2007-10-29 17:18:39 -0400 | [diff] [blame] | 3609 | sdev_evt_send_simple(dev->sdev, SDEV_EVT_MEDIA_CHANGE, |
| 3610 | GFP_ATOMIC); |
Kristen Carlson Accardi | 2f29496 | 2007-08-15 04:11:25 -0400 | [diff] [blame] | 3611 | } |
Kristen Carlson Accardi | 2f29496 | 2007-08-15 04:11:25 -0400 | [diff] [blame] | 3612 | |
| 3613 | /** |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3614 | * ata_scsi_hotplug - SCSI part of hotplug |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 3615 | * @work: Pointer to ATA port to perform SCSI hotplug on |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3616 | * |
| 3617 | * Perform SCSI part of hotplug. It's executed from a separate |
| 3618 | * workqueue after EH completes. This is necessary because SCSI |
| 3619 | * hot plugging requires working EH and hot unplugging is |
| 3620 | * synchronized with hot plugging with a mutex. |
| 3621 | * |
| 3622 | * LOCKING: |
| 3623 | * Kernel thread context (may sleep). |
| 3624 | */ |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 3625 | void ata_scsi_hotplug(struct work_struct *work) |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3626 | { |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 3627 | struct ata_port *ap = |
| 3628 | container_of(work, struct ata_port, hotplug_task.work); |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3629 | int i; |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3630 | |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 3631 | if (ap->pflags & ATA_PFLAG_UNLOADING) { |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3632 | DPRINTK("ENTER/EXIT - unloading\n"); |
| 3633 | return; |
| 3634 | } |
| 3635 | |
| 3636 | DPRINTK("ENTER\n"); |
Tejun Heo | ad72cf9 | 2010-07-02 10:03:52 +0200 | [diff] [blame] | 3637 | mutex_lock(&ap->scsi_scan_mutex); |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3638 | |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3639 | /* Unplug detached devices. We cannot use link iterator here |
| 3640 | * because PMP links have to be scanned even if PMP is |
| 3641 | * currently not attached. Iterate manually. |
| 3642 | */ |
| 3643 | ata_scsi_handle_link_detach(&ap->link); |
| 3644 | if (ap->pmp_link) |
| 3645 | for (i = 0; i < SATA_PMP_MAX_PORTS; i++) |
| 3646 | ata_scsi_handle_link_detach(&ap->pmp_link[i]); |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3647 | |
| 3648 | /* scan for new ones */ |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3649 | ata_scsi_scan_host(ap, 0); |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3650 | |
Tejun Heo | ad72cf9 | 2010-07-02 10:03:52 +0200 | [diff] [blame] | 3651 | mutex_unlock(&ap->scsi_scan_mutex); |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3652 | DPRINTK("EXIT\n"); |
| 3653 | } |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3654 | |
| 3655 | /** |
| 3656 | * ata_scsi_user_scan - indication for user-initiated bus scan |
| 3657 | * @shost: SCSI host to scan |
| 3658 | * @channel: Channel to scan |
| 3659 | * @id: ID to scan |
| 3660 | * @lun: LUN to scan |
| 3661 | * |
| 3662 | * This function is called when user explicitly requests bus |
| 3663 | * scan. Set probe pending flag and invoke EH. |
| 3664 | * |
| 3665 | * LOCKING: |
| 3666 | * SCSI layer (we don't care) |
| 3667 | * |
| 3668 | * RETURNS: |
| 3669 | * Zero. |
| 3670 | */ |
Gwendal Grignou | d902747 | 2010-05-25 12:31:38 -0700 | [diff] [blame] | 3671 | int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel, |
| 3672 | unsigned int id, unsigned int lun) |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3673 | { |
| 3674 | struct ata_port *ap = ata_shost_to_port(shost); |
| 3675 | unsigned long flags; |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3676 | int devno, rc = 0; |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3677 | |
| 3678 | if (!ap->ops->error_handler) |
| 3679 | return -EOPNOTSUPP; |
| 3680 | |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3681 | if (lun != SCAN_WILD_CARD && lun) |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3682 | return -EINVAL; |
| 3683 | |
Tejun Heo | 071f44b | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 3684 | if (!sata_pmp_attached(ap)) { |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3685 | if (channel != SCAN_WILD_CARD && channel) |
| 3686 | return -EINVAL; |
| 3687 | devno = id; |
| 3688 | } else { |
| 3689 | if (id != SCAN_WILD_CARD && id) |
| 3690 | return -EINVAL; |
| 3691 | devno = channel; |
| 3692 | } |
| 3693 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 3694 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3695 | |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3696 | if (devno == SCAN_WILD_CARD) { |
| 3697 | struct ata_link *link; |
| 3698 | |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 3699 | ata_for_each_link(link, ap, EDGE) { |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3700 | struct ata_eh_info *ehi = &link->eh_info; |
Tejun Heo | b558edd | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 3701 | ehi->probe_mask |= ATA_ALL_DEVICES; |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 3702 | ehi->action |= ATA_EH_RESET; |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3703 | } |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3704 | } else { |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3705 | struct ata_device *dev = ata_find_dev(ap, devno); |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3706 | |
| 3707 | if (dev) { |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3708 | struct ata_eh_info *ehi = &dev->link->eh_info; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 3709 | ehi->probe_mask |= 1 << dev->devno; |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 3710 | ehi->action |= ATA_EH_RESET; |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3711 | } else |
| 3712 | rc = -EINVAL; |
| 3713 | } |
| 3714 | |
Tejun Heo | 309afcb | 2006-09-30 18:07:17 +0900 | [diff] [blame] | 3715 | if (rc == 0) { |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3716 | ata_port_schedule_eh(ap); |
Tejun Heo | 309afcb | 2006-09-30 18:07:17 +0900 | [diff] [blame] | 3717 | spin_unlock_irqrestore(ap->lock, flags); |
| 3718 | ata_port_wait_eh(ap); |
| 3719 | } else |
| 3720 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3721 | |
| 3722 | return rc; |
| 3723 | } |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3724 | |
| 3725 | /** |
Tejun Heo | d017126 | 2006-06-12 22:51:14 +0900 | [diff] [blame] | 3726 | * ata_scsi_dev_rescan - initiate scsi_rescan_device() |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 3727 | * @work: Pointer to ATA port to perform scsi_rescan_device() |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3728 | * |
Tejun Heo | d017126 | 2006-06-12 22:51:14 +0900 | [diff] [blame] | 3729 | * After ATA pass thru (SAT) commands are executed successfully, |
Tejun Heo | ad72cf9 | 2010-07-02 10:03:52 +0200 | [diff] [blame] | 3730 | * libata need to propagate the changes to SCSI layer. |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3731 | * |
Tejun Heo | d017126 | 2006-06-12 22:51:14 +0900 | [diff] [blame] | 3732 | * LOCKING: |
| 3733 | * Kernel thread context (may sleep). |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3734 | */ |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 3735 | void ata_scsi_dev_rescan(struct work_struct *work) |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3736 | { |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 3737 | struct ata_port *ap = |
| 3738 | container_of(work, struct ata_port, scsi_rescan_task); |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3739 | struct ata_link *link; |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3740 | struct ata_device *dev; |
Tejun Heo | f84e7e4 | 2006-11-22 11:21:31 +0900 | [diff] [blame] | 3741 | unsigned long flags; |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3742 | |
Tejun Heo | ad72cf9 | 2010-07-02 10:03:52 +0200 | [diff] [blame] | 3743 | mutex_lock(&ap->scsi_scan_mutex); |
Tejun Heo | f84e7e4 | 2006-11-22 11:21:31 +0900 | [diff] [blame] | 3744 | spin_lock_irqsave(ap->lock, flags); |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3745 | |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 3746 | ata_for_each_link(link, ap, EDGE) { |
| 3747 | ata_for_each_dev(dev, link, ENABLED) { |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3748 | struct scsi_device *sdev = dev->sdev; |
Tejun Heo | f84e7e4 | 2006-11-22 11:21:31 +0900 | [diff] [blame] | 3749 | |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 3750 | if (!sdev) |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3751 | continue; |
| 3752 | if (scsi_device_get(sdev)) |
| 3753 | continue; |
Tejun Heo | f84e7e4 | 2006-11-22 11:21:31 +0900 | [diff] [blame] | 3754 | |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 3755 | spin_unlock_irqrestore(ap->lock, flags); |
| 3756 | scsi_rescan_device(&(sdev->sdev_gendev)); |
| 3757 | scsi_device_put(sdev); |
| 3758 | spin_lock_irqsave(ap->lock, flags); |
| 3759 | } |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3760 | } |
Tejun Heo | f84e7e4 | 2006-11-22 11:21:31 +0900 | [diff] [blame] | 3761 | |
| 3762 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | ad72cf9 | 2010-07-02 10:03:52 +0200 | [diff] [blame] | 3763 | mutex_unlock(&ap->scsi_scan_mutex); |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3764 | } |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3765 | |
| 3766 | /** |
| 3767 | * ata_sas_port_alloc - Allocate port for a SAS attached SATA device |
Jeff Garzik | 4f93137 | 2006-09-29 05:07:25 -0400 | [diff] [blame] | 3768 | * @host: ATA host container for all SAS ports |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3769 | * @port_info: Information from low-level host driver |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3770 | * @shost: SCSI host that the scsi device is attached to |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3771 | * |
| 3772 | * LOCKING: |
| 3773 | * PCI/etc. bus probe sem. |
| 3774 | * |
| 3775 | * RETURNS: |
| 3776 | * ata_port pointer on success / NULL on failure. |
| 3777 | */ |
| 3778 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3779 | struct ata_port *ata_sas_port_alloc(struct ata_host *host, |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3780 | struct ata_port_info *port_info, |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3781 | struct Scsi_Host *shost) |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3782 | { |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3783 | struct ata_port *ap; |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3784 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3785 | ap = ata_port_alloc(host); |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3786 | if (!ap) |
| 3787 | return NULL; |
| 3788 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3789 | ap->port_no = 0; |
James Bottomley | a29b5da | 2011-01-23 08:30:00 -0600 | [diff] [blame] | 3790 | ap->lock = &host->lock; |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3791 | ap->pio_mask = port_info->pio_mask; |
| 3792 | ap->mwdma_mask = port_info->mwdma_mask; |
| 3793 | ap->udma_mask = port_info->udma_mask; |
| 3794 | ap->flags |= port_info->flags; |
| 3795 | ap->ops = port_info->port_ops; |
| 3796 | ap->cbl = ATA_CBL_SATA; |
| 3797 | |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3798 | return ap; |
| 3799 | } |
| 3800 | EXPORT_SYMBOL_GPL(ata_sas_port_alloc); |
| 3801 | |
| 3802 | /** |
| 3803 | * ata_sas_port_start - Set port up for dma. |
| 3804 | * @ap: Port to initialize |
| 3805 | * |
| 3806 | * Called just after data structures for each port are |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 3807 | * initialized. |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3808 | * |
| 3809 | * May be used as the port_start() entry in ata_port_operations. |
| 3810 | * |
| 3811 | * LOCKING: |
| 3812 | * Inherited from caller. |
| 3813 | */ |
| 3814 | int ata_sas_port_start(struct ata_port *ap) |
| 3815 | { |
Nishanth Aravamudan | 3f1e046 | 2011-06-16 08:28:36 -0700 | [diff] [blame] | 3816 | /* |
| 3817 | * the port is marked as frozen at allocation time, but if we don't |
| 3818 | * have new eh, we won't thaw it |
| 3819 | */ |
| 3820 | if (!ap->ops->error_handler) |
| 3821 | ap->pflags &= ~ATA_PFLAG_FROZEN; |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 3822 | return 0; |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3823 | } |
| 3824 | EXPORT_SYMBOL_GPL(ata_sas_port_start); |
| 3825 | |
| 3826 | /** |
| 3827 | * ata_port_stop - Undo ata_sas_port_start() |
| 3828 | * @ap: Port to shut down |
| 3829 | * |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3830 | * May be used as the port_stop() entry in ata_port_operations. |
| 3831 | * |
| 3832 | * LOCKING: |
| 3833 | * Inherited from caller. |
| 3834 | */ |
| 3835 | |
| 3836 | void ata_sas_port_stop(struct ata_port *ap) |
| 3837 | { |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3838 | } |
| 3839 | EXPORT_SYMBOL_GPL(ata_sas_port_stop); |
| 3840 | |
| 3841 | /** |
| 3842 | * ata_sas_port_init - Initialize a SATA device |
| 3843 | * @ap: SATA port to initialize |
| 3844 | * |
| 3845 | * LOCKING: |
| 3846 | * PCI/etc. bus probe sem. |
| 3847 | * |
| 3848 | * RETURNS: |
| 3849 | * Zero on success, non-zero on error. |
| 3850 | */ |
| 3851 | |
| 3852 | int ata_sas_port_init(struct ata_port *ap) |
| 3853 | { |
| 3854 | int rc = ap->ops->port_start(ap); |
| 3855 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3856 | if (!rc) { |
| 3857 | ap->print_id = ata_print_id++; |
James Bottomley | 238c9cf | 2011-01-23 08:28:33 -0600 | [diff] [blame] | 3858 | rc = ata_port_probe(ap); |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3859 | } |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3860 | |
| 3861 | return rc; |
| 3862 | } |
| 3863 | EXPORT_SYMBOL_GPL(ata_sas_port_init); |
| 3864 | |
| 3865 | /** |
| 3866 | * ata_sas_port_destroy - Destroy a SATA port allocated by ata_sas_port_alloc |
| 3867 | * @ap: SATA port to destroy |
| 3868 | * |
| 3869 | */ |
| 3870 | |
| 3871 | void ata_sas_port_destroy(struct ata_port *ap) |
| 3872 | { |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 3873 | if (ap->ops->port_stop) |
| 3874 | ap->ops->port_stop(ap); |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3875 | kfree(ap); |
| 3876 | } |
| 3877 | EXPORT_SYMBOL_GPL(ata_sas_port_destroy); |
| 3878 | |
| 3879 | /** |
| 3880 | * ata_sas_slave_configure - Default slave_config routine for libata devices |
| 3881 | * @sdev: SCSI device to configure |
| 3882 | * @ap: ATA port to which SCSI device is attached |
| 3883 | * |
| 3884 | * RETURNS: |
| 3885 | * Zero. |
| 3886 | */ |
| 3887 | |
| 3888 | int ata_sas_slave_configure(struct scsi_device *sdev, struct ata_port *ap) |
| 3889 | { |
| 3890 | ata_scsi_sdev_config(sdev); |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 3891 | ata_scsi_dev_config(sdev, ap->link.device); |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3892 | return 0; |
| 3893 | } |
| 3894 | EXPORT_SYMBOL_GPL(ata_sas_slave_configure); |
| 3895 | |
| 3896 | /** |
| 3897 | * ata_sas_queuecmd - Issue SCSI cdb to libata-managed device |
| 3898 | * @cmd: SCSI command to be sent |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3899 | * @ap: ATA port to which the command is being sent |
| 3900 | * |
| 3901 | * RETURNS: |
Brian King | 08475a1 | 2006-11-20 13:51:56 -0600 | [diff] [blame] | 3902 | * Return value from __ata_scsi_queuecmd() if @cmd can be queued, |
| 3903 | * 0 otherwise. |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3904 | */ |
| 3905 | |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 3906 | int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap) |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3907 | { |
Brian King | 08475a1 | 2006-11-20 13:51:56 -0600 | [diff] [blame] | 3908 | int rc = 0; |
| 3909 | |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3910 | ata_scsi_dump_cdb(ap, cmd); |
| 3911 | |
Tejun Heo | 2486fa5 | 2008-07-31 07:52:40 +0900 | [diff] [blame] | 3912 | if (likely(ata_dev_enabled(ap->link.device))) |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 3913 | rc = __ata_scsi_queuecmd(cmd, ap->link.device); |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3914 | else { |
| 3915 | cmd->result = (DID_BAD_TARGET << 16); |
Jeff Garzik | b27dcfb | 2010-11-17 22:56:48 -0500 | [diff] [blame] | 3916 | cmd->scsi_done(cmd); |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3917 | } |
Brian King | 08475a1 | 2006-11-20 13:51:56 -0600 | [diff] [blame] | 3918 | return rc; |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3919 | } |
| 3920 | EXPORT_SYMBOL_GPL(ata_sas_queuecmd); |