Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Jeff Garzik | af36d7f | 2005-08-28 20:18:39 -0400 | [diff] [blame] | 2 | * libata-scsi.c - helper library for ATA |
| 3 | * |
| 4 | * Maintained by: Jeff Garzik <jgarzik@pobox.com> |
| 5 | * Please ALWAYS copy linux-ide@vger.kernel.org |
| 6 | * on emails. |
| 7 | * |
| 8 | * Copyright 2003-2004 Red Hat, Inc. All rights reserved. |
| 9 | * Copyright 2003-2004 Jeff Garzik |
| 10 | * |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of the GNU General Public License as published by |
| 14 | * the Free Software Foundation; either version 2, or (at your option) |
| 15 | * any later version. |
| 16 | * |
| 17 | * This program is distributed in the hope that it will be useful, |
| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | * GNU General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License |
| 23 | * along with this program; see the file COPYING. If not, write to |
| 24 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
| 25 | * |
| 26 | * |
| 27 | * libata documentation is available via 'make {ps|pdf}docs', |
| 28 | * as Documentation/DocBook/libata.* |
| 29 | * |
| 30 | * Hardware documentation available from |
| 31 | * - http://www.t10.org/ |
| 32 | * - http://www.t13.org/ |
| 33 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | */ |
| 35 | |
| 36 | #include <linux/kernel.h> |
| 37 | #include <linux/blkdev.h> |
| 38 | #include <linux/spinlock.h> |
| 39 | #include <scsi/scsi.h> |
| 40 | #include "scsi.h" |
| 41 | #include <scsi/scsi_host.h> |
Jeff Garzik | 005a5a0 | 2005-10-30 23:31:48 -0500 | [diff] [blame^] | 42 | #include <scsi/scsi_device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | #include <linux/libata.h> |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 44 | #include <linux/hdreg.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include <asm/uaccess.h> |
| 46 | |
| 47 | #include "libata.h" |
| 48 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 49 | #define SECTOR_SIZE 512 |
| 50 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 51 | typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc, const u8 *scsicmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | static struct ata_device * |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 53 | 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] | 54 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 55 | #define RW_RECOVERY_MPAGE 0x1 |
| 56 | #define RW_RECOVERY_MPAGE_LEN 12 |
| 57 | #define CACHE_MPAGE 0x8 |
| 58 | #define CACHE_MPAGE_LEN 20 |
| 59 | #define CONTROL_MPAGE 0xa |
| 60 | #define CONTROL_MPAGE_LEN 12 |
| 61 | #define ALL_MPAGES 0x3f |
| 62 | #define ALL_SUB_MPAGES 0xff |
| 63 | |
| 64 | |
| 65 | static const u8 def_rw_recovery_mpage[] = { |
| 66 | RW_RECOVERY_MPAGE, |
| 67 | RW_RECOVERY_MPAGE_LEN - 2, |
| 68 | (1 << 7) | /* AWRE, sat-r06 say it shall be 0 */ |
| 69 | (1 << 6), /* ARRE (auto read reallocation) */ |
| 70 | 0, /* read retry count */ |
| 71 | 0, 0, 0, 0, |
| 72 | 0, /* write retry count */ |
| 73 | 0, 0, 0 |
| 74 | }; |
| 75 | |
| 76 | static const u8 def_cache_mpage[CACHE_MPAGE_LEN] = { |
| 77 | CACHE_MPAGE, |
| 78 | CACHE_MPAGE_LEN - 2, |
| 79 | 0, /* contains WCE, needs to be 0 for logic */ |
| 80 | 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 81 | 0, /* contains DRA, needs to be 0 for logic */ |
| 82 | 0, 0, 0, 0, 0, 0, 0 |
| 83 | }; |
| 84 | |
| 85 | static const u8 def_control_mpage[CONTROL_MPAGE_LEN] = { |
| 86 | CONTROL_MPAGE, |
| 87 | CONTROL_MPAGE_LEN - 2, |
| 88 | 2, /* DSENSE=0, GLTSD=1 */ |
| 89 | 0, /* [QAM+QERR may be 1, see 05-359r1] */ |
| 90 | 0, 0, 0, 0, 0xff, 0xff, |
| 91 | 0, 30 /* extended self test time, see 05-359r1 */ |
| 92 | }; |
| 93 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 95 | static void ata_scsi_invalid_field(struct scsi_cmnd *cmd, |
| 96 | void (*done)(struct scsi_cmnd *)) |
| 97 | { |
| 98 | ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x24, 0x0); |
| 99 | /* "Invalid field in cbd" */ |
| 100 | done(cmd); |
| 101 | } |
| 102 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | /** |
| 104 | * ata_std_bios_param - generic bios head/sector/cylinder calculator used by sd. |
| 105 | * @sdev: SCSI device for which BIOS geometry is to be determined |
| 106 | * @bdev: block device associated with @sdev |
| 107 | * @capacity: capacity of SCSI device |
| 108 | * @geom: location to which geometry will be output |
| 109 | * |
| 110 | * Generic bios head/sector/cylinder calculator |
| 111 | * used by sd. Most BIOSes nowadays expect a XXX/255/16 (CHS) |
| 112 | * mapping. Some situations may arise where the disk is not |
| 113 | * bootable if this is not used. |
| 114 | * |
| 115 | * LOCKING: |
| 116 | * Defined by the SCSI layer. We don't really care. |
| 117 | * |
| 118 | * RETURNS: |
| 119 | * Zero. |
| 120 | */ |
| 121 | int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev, |
| 122 | sector_t capacity, int geom[]) |
| 123 | { |
| 124 | geom[0] = 255; |
| 125 | geom[1] = 63; |
| 126 | sector_div(capacity, 255*63); |
| 127 | geom[2] = capacity; |
| 128 | |
| 129 | return 0; |
| 130 | } |
| 131 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 132 | /** |
| 133 | * ata_cmd_ioctl - Handler for HDIO_DRIVE_CMD ioctl |
| 134 | * @dev: Device to whom we are issuing command |
| 135 | * @arg: User provided data for issuing command |
| 136 | * |
| 137 | * LOCKING: |
| 138 | * Defined by the SCSI layer. We don't really care. |
| 139 | * |
| 140 | * RETURNS: |
| 141 | * Zero on success, negative errno on error. |
| 142 | */ |
| 143 | |
| 144 | int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg) |
| 145 | { |
| 146 | int rc = 0; |
| 147 | u8 scsi_cmd[MAX_COMMAND_SIZE]; |
| 148 | u8 args[4], *argbuf = NULL; |
| 149 | int argsize = 0; |
| 150 | struct scsi_request *sreq; |
| 151 | |
| 152 | if (NULL == (void *)arg) |
| 153 | return -EINVAL; |
| 154 | |
| 155 | if (copy_from_user(args, arg, sizeof(args))) |
| 156 | return -EFAULT; |
| 157 | |
| 158 | sreq = scsi_allocate_request(scsidev, GFP_KERNEL); |
| 159 | if (!sreq) |
| 160 | return -EINTR; |
| 161 | |
| 162 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
| 163 | |
| 164 | if (args[3]) { |
| 165 | argsize = SECTOR_SIZE * args[3]; |
| 166 | argbuf = kmalloc(argsize, GFP_KERNEL); |
Jeff Raubitschek | 54dac83 | 2005-10-04 10:21:19 -0400 | [diff] [blame] | 167 | if (argbuf == NULL) { |
| 168 | rc = -ENOMEM; |
| 169 | goto error; |
| 170 | } |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 171 | |
| 172 | scsi_cmd[1] = (4 << 1); /* PIO Data-in */ |
| 173 | scsi_cmd[2] = 0x0e; /* no off.line or cc, read from dev, |
| 174 | block count in sector count field */ |
| 175 | sreq->sr_data_direction = DMA_FROM_DEVICE; |
| 176 | } else { |
| 177 | scsi_cmd[1] = (3 << 1); /* Non-data */ |
| 178 | /* scsi_cmd[2] is already 0 -- no off.line, cc, or data xfer */ |
| 179 | sreq->sr_data_direction = DMA_NONE; |
| 180 | } |
| 181 | |
| 182 | scsi_cmd[0] = ATA_16; |
| 183 | |
| 184 | scsi_cmd[4] = args[2]; |
| 185 | if (args[0] == WIN_SMART) { /* hack -- ide driver does this too... */ |
| 186 | scsi_cmd[6] = args[3]; |
| 187 | scsi_cmd[8] = args[1]; |
| 188 | scsi_cmd[10] = 0x4f; |
| 189 | scsi_cmd[12] = 0xc2; |
| 190 | } else { |
| 191 | scsi_cmd[6] = args[1]; |
| 192 | } |
| 193 | scsi_cmd[14] = args[0]; |
| 194 | |
| 195 | /* Good values for timeout and retries? Values below |
| 196 | from scsi_ioctl_send_command() for default case... */ |
| 197 | scsi_wait_req(sreq, scsi_cmd, argbuf, argsize, (10*HZ), 5); |
| 198 | |
| 199 | if (sreq->sr_result) { |
| 200 | rc = -EIO; |
| 201 | goto error; |
| 202 | } |
| 203 | |
| 204 | /* Need code to retrieve data from check condition? */ |
| 205 | |
| 206 | if ((argbuf) |
| 207 | && copy_to_user((void *)(arg + sizeof(args)), argbuf, argsize)) |
| 208 | rc = -EFAULT; |
| 209 | error: |
| 210 | scsi_release_request(sreq); |
| 211 | |
| 212 | if (argbuf) |
| 213 | kfree(argbuf); |
| 214 | |
| 215 | return rc; |
| 216 | } |
| 217 | |
| 218 | /** |
| 219 | * ata_task_ioctl - Handler for HDIO_DRIVE_TASK ioctl |
| 220 | * @dev: Device to whom we are issuing command |
| 221 | * @arg: User provided data for issuing command |
| 222 | * |
| 223 | * LOCKING: |
| 224 | * Defined by the SCSI layer. We don't really care. |
| 225 | * |
| 226 | * RETURNS: |
| 227 | * Zero on success, negative errno on error. |
| 228 | */ |
| 229 | int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg) |
| 230 | { |
| 231 | int rc = 0; |
| 232 | u8 scsi_cmd[MAX_COMMAND_SIZE]; |
| 233 | u8 args[7]; |
| 234 | struct scsi_request *sreq; |
| 235 | |
| 236 | if (NULL == (void *)arg) |
| 237 | return -EINVAL; |
| 238 | |
| 239 | if (copy_from_user(args, arg, sizeof(args))) |
| 240 | return -EFAULT; |
| 241 | |
| 242 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
| 243 | scsi_cmd[0] = ATA_16; |
| 244 | scsi_cmd[1] = (3 << 1); /* Non-data */ |
| 245 | /* scsi_cmd[2] is already 0 -- no off.line, cc, or data xfer */ |
| 246 | scsi_cmd[4] = args[1]; |
| 247 | scsi_cmd[6] = args[2]; |
| 248 | scsi_cmd[8] = args[3]; |
| 249 | scsi_cmd[10] = args[4]; |
| 250 | scsi_cmd[12] = args[5]; |
| 251 | scsi_cmd[14] = args[0]; |
| 252 | |
| 253 | sreq = scsi_allocate_request(scsidev, GFP_KERNEL); |
| 254 | if (!sreq) { |
| 255 | rc = -EINTR; |
| 256 | goto error; |
| 257 | } |
| 258 | |
| 259 | sreq->sr_data_direction = DMA_NONE; |
| 260 | /* Good values for timeout and retries? Values below |
| 261 | from scsi_ioctl_send_command() for default case... */ |
| 262 | scsi_wait_req(sreq, scsi_cmd, NULL, 0, (10*HZ), 5); |
| 263 | |
| 264 | if (sreq->sr_result) { |
| 265 | rc = -EIO; |
| 266 | goto error; |
| 267 | } |
| 268 | |
| 269 | /* Need code to retrieve data from check condition? */ |
| 270 | |
| 271 | error: |
| 272 | scsi_release_request(sreq); |
| 273 | return rc; |
| 274 | } |
| 275 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | int ata_scsi_ioctl(struct scsi_device *scsidev, int cmd, void __user *arg) |
| 277 | { |
| 278 | struct ata_port *ap; |
| 279 | struct ata_device *dev; |
| 280 | int val = -EINVAL, rc = -EINVAL; |
| 281 | |
| 282 | ap = (struct ata_port *) &scsidev->host->hostdata[0]; |
| 283 | if (!ap) |
| 284 | goto out; |
| 285 | |
| 286 | dev = ata_scsi_find_dev(ap, scsidev); |
| 287 | if (!dev) { |
| 288 | rc = -ENODEV; |
| 289 | goto out; |
| 290 | } |
| 291 | |
| 292 | switch (cmd) { |
| 293 | case ATA_IOC_GET_IO32: |
| 294 | val = 0; |
| 295 | if (copy_to_user(arg, &val, 1)) |
| 296 | return -EFAULT; |
| 297 | return 0; |
| 298 | |
| 299 | case ATA_IOC_SET_IO32: |
| 300 | val = (unsigned long) arg; |
| 301 | if (val != 0) |
| 302 | return -EINVAL; |
| 303 | return 0; |
| 304 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 305 | case HDIO_DRIVE_CMD: |
| 306 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
| 307 | return -EACCES; |
| 308 | return ata_cmd_ioctl(scsidev, arg); |
| 309 | |
| 310 | case HDIO_DRIVE_TASK: |
| 311 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
| 312 | return -EACCES; |
| 313 | return ata_task_ioctl(scsidev, arg); |
| 314 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | default: |
| 316 | rc = -ENOTTY; |
| 317 | break; |
| 318 | } |
| 319 | |
| 320 | out: |
| 321 | return rc; |
| 322 | } |
| 323 | |
| 324 | /** |
| 325 | * ata_scsi_qc_new - acquire new ata_queued_cmd reference |
| 326 | * @ap: ATA port to which the new command is attached |
| 327 | * @dev: ATA device to which the new command is attached |
| 328 | * @cmd: SCSI command that originated this ATA command |
| 329 | * @done: SCSI command completion function |
| 330 | * |
| 331 | * Obtain a reference to an unused ata_queued_cmd structure, |
| 332 | * which is the basic libata structure representing a single |
| 333 | * ATA command sent to the hardware. |
| 334 | * |
| 335 | * If a command was available, fill in the SCSI-specific |
| 336 | * portions of the structure with information on the |
| 337 | * current command. |
| 338 | * |
| 339 | * LOCKING: |
| 340 | * spin_lock_irqsave(host_set lock) |
| 341 | * |
| 342 | * RETURNS: |
| 343 | * Command allocated, or %NULL if none available. |
| 344 | */ |
| 345 | struct ata_queued_cmd *ata_scsi_qc_new(struct ata_port *ap, |
| 346 | struct ata_device *dev, |
| 347 | struct scsi_cmnd *cmd, |
| 348 | void (*done)(struct scsi_cmnd *)) |
| 349 | { |
| 350 | struct ata_queued_cmd *qc; |
| 351 | |
| 352 | qc = ata_qc_new_init(ap, dev); |
| 353 | if (qc) { |
| 354 | qc->scsicmd = cmd; |
| 355 | qc->scsidone = done; |
| 356 | |
| 357 | if (cmd->use_sg) { |
| 358 | qc->sg = (struct scatterlist *) cmd->request_buffer; |
| 359 | qc->n_elem = cmd->use_sg; |
| 360 | } else { |
| 361 | qc->sg = &qc->sgent; |
| 362 | qc->n_elem = 1; |
| 363 | } |
| 364 | } else { |
| 365 | cmd->result = (DID_OK << 16) | (QUEUE_FULL << 1); |
| 366 | done(cmd); |
| 367 | } |
| 368 | |
| 369 | return qc; |
| 370 | } |
| 371 | |
| 372 | /** |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 373 | * ata_dump_status - user friendly display of error info |
| 374 | * @id: id of the port in question |
| 375 | * @tf: ptr to filled out taskfile |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | * |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 377 | * Decode and dump the ATA error/status registers for the user so |
| 378 | * that they have some idea what really happened at the non |
| 379 | * make-believe layer. |
| 380 | * |
| 381 | * LOCKING: |
| 382 | * inherited from caller |
| 383 | */ |
| 384 | void ata_dump_status(unsigned id, struct ata_taskfile *tf) |
| 385 | { |
| 386 | u8 stat = tf->command, err = tf->feature; |
| 387 | |
| 388 | printk(KERN_WARNING "ata%u: status=0x%02x { ", id, stat); |
| 389 | if (stat & ATA_BUSY) { |
| 390 | printk("Busy }\n"); /* Data is not valid in this case */ |
| 391 | } else { |
| 392 | if (stat & 0x40) printk("DriveReady "); |
| 393 | if (stat & 0x20) printk("DeviceFault "); |
| 394 | if (stat & 0x10) printk("SeekComplete "); |
| 395 | if (stat & 0x08) printk("DataRequest "); |
| 396 | if (stat & 0x04) printk("CorrectedError "); |
| 397 | if (stat & 0x02) printk("Index "); |
| 398 | if (stat & 0x01) printk("Error "); |
| 399 | printk("}\n"); |
| 400 | |
| 401 | if (err) { |
| 402 | printk(KERN_WARNING "ata%u: error=0x%02x { ", id, err); |
| 403 | if (err & 0x04) printk("DriveStatusError "); |
| 404 | if (err & 0x80) { |
| 405 | if (err & 0x04) printk("BadCRC "); |
| 406 | else printk("Sector "); |
| 407 | } |
| 408 | if (err & 0x40) printk("UncorrectableError "); |
| 409 | if (err & 0x10) printk("SectorIdNotFound "); |
| 410 | if (err & 0x02) printk("TrackZeroNotFound "); |
| 411 | if (err & 0x01) printk("AddrMarkNotFound "); |
| 412 | printk("}\n"); |
| 413 | } |
| 414 | } |
| 415 | } |
| 416 | |
| 417 | /** |
| 418 | * ata_to_sense_error - convert ATA error to SCSI error |
| 419 | * @drv_stat: value contained in ATA status register |
| 420 | * @drv_err: value contained in ATA error register |
| 421 | * @sk: the sense key we'll fill out |
| 422 | * @asc: the additional sense code we'll fill out |
| 423 | * @ascq: the additional sense code qualifier we'll fill out |
| 424 | * |
| 425 | * Converts an ATA error into a SCSI error. Fill out pointers to |
| 426 | * SK, ASC, and ASCQ bytes for later use in fixed or descriptor |
| 427 | * format sense blocks. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | * |
| 429 | * LOCKING: |
| 430 | * spin_lock_irqsave(host_set lock) |
| 431 | */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 432 | void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, u8 *asc, |
| 433 | u8 *ascq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | { |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 435 | int i; |
Jeff Garzik | ffe75ef | 2005-10-09 10:40:44 -0400 | [diff] [blame] | 436 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | /* Based on the 3ware driver translation table */ |
| 438 | static unsigned char sense_table[][4] = { |
| 439 | /* BBD|ECC|ID|MAR */ |
| 440 | {0xd1, ABORTED_COMMAND, 0x00, 0x00}, // Device busy Aborted command |
| 441 | /* BBD|ECC|ID */ |
| 442 | {0xd0, ABORTED_COMMAND, 0x00, 0x00}, // Device busy Aborted command |
| 443 | /* ECC|MC|MARK */ |
| 444 | {0x61, HARDWARE_ERROR, 0x00, 0x00}, // Device fault Hardware error |
| 445 | /* ICRC|ABRT */ /* NB: ICRC & !ABRT is BBD */ |
| 446 | {0x84, ABORTED_COMMAND, 0x47, 0x00}, // Data CRC error SCSI parity error |
| 447 | /* MC|ID|ABRT|TRK0|MARK */ |
| 448 | {0x37, NOT_READY, 0x04, 0x00}, // Unit offline Not ready |
| 449 | /* MCR|MARK */ |
| 450 | {0x09, NOT_READY, 0x04, 0x00}, // Unrecovered disk error Not ready |
| 451 | /* Bad address mark */ |
| 452 | {0x01, MEDIUM_ERROR, 0x13, 0x00}, // Address mark not found Address mark not found for data field |
| 453 | /* TRK0 */ |
| 454 | {0x02, HARDWARE_ERROR, 0x00, 0x00}, // Track 0 not found Hardware error |
| 455 | /* Abort & !ICRC */ |
| 456 | {0x04, ABORTED_COMMAND, 0x00, 0x00}, // Aborted command Aborted command |
| 457 | /* Media change request */ |
| 458 | {0x08, NOT_READY, 0x04, 0x00}, // Media change request FIXME: faking offline |
| 459 | /* SRV */ |
| 460 | {0x10, ABORTED_COMMAND, 0x14, 0x00}, // ID not found Recorded entity not found |
| 461 | /* Media change */ |
| 462 | {0x08, NOT_READY, 0x04, 0x00}, // Media change FIXME: faking offline |
| 463 | /* ECC */ |
| 464 | {0x40, MEDIUM_ERROR, 0x11, 0x04}, // Uncorrectable ECC error Unrecovered read error |
| 465 | /* BBD - block marked bad */ |
| 466 | {0x80, MEDIUM_ERROR, 0x11, 0x04}, // Block marked bad Medium error, unrecovered read error |
| 467 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
| 468 | }; |
| 469 | static unsigned char stat_table[][4] = { |
| 470 | /* Must be first because BUSY means no other bits valid */ |
| 471 | {0x80, ABORTED_COMMAND, 0x47, 0x00}, // Busy, fake parity for now |
| 472 | {0x20, HARDWARE_ERROR, 0x00, 0x00}, // Device fault |
| 473 | {0x08, ABORTED_COMMAND, 0x47, 0x00}, // Timed out in xfer, fake parity for now |
| 474 | {0x04, RECOVERED_ERROR, 0x11, 0x00}, // Recovered ECC error Medium error, recovered |
| 475 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
| 476 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | |
| 478 | /* |
| 479 | * Is this an error we can process/parse |
| 480 | */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 481 | if (drv_stat & ATA_BUSY) { |
| 482 | drv_err = 0; /* Ignore the err bits, they're invalid */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 485 | if (drv_err) { |
| 486 | /* Look for drv_err */ |
| 487 | for (i = 0; sense_table[i][0] != 0xFF; i++) { |
| 488 | /* Look for best matches first */ |
| 489 | if ((sense_table[i][0] & drv_err) == |
| 490 | sense_table[i][0]) { |
| 491 | *sk = sense_table[i][1]; |
| 492 | *asc = sense_table[i][2]; |
| 493 | *ascq = sense_table[i][3]; |
| 494 | goto translate_done; |
| 495 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | } |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 497 | /* No immediate match */ |
| 498 | printk(KERN_WARNING "ata%u: no sense translation for " |
| 499 | "error 0x%02x\n", id, drv_err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | } |
| 501 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | /* Fall back to interpreting status bits */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 503 | for (i = 0; stat_table[i][0] != 0xFF; i++) { |
| 504 | if (stat_table[i][0] & drv_stat) { |
| 505 | *sk = stat_table[i][1]; |
| 506 | *asc = stat_table[i][2]; |
| 507 | *ascq = stat_table[i][3]; |
| 508 | goto translate_done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | } |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 511 | /* No error? Undecoded? */ |
| 512 | printk(KERN_WARNING "ata%u: no sense translation for status: 0x%02x\n", |
| 513 | id, drv_stat); |
| 514 | |
| 515 | /* For our last chance pick, use medium read error because |
| 516 | * it's much more common than an ATA drive telling you a write |
| 517 | * has failed. |
| 518 | */ |
| 519 | *sk = MEDIUM_ERROR; |
| 520 | *asc = 0x11; /* "unrecovered read error" */ |
| 521 | *ascq = 0x04; /* "auto-reallocation failed" */ |
| 522 | |
| 523 | translate_done: |
| 524 | printk(KERN_ERR "ata%u: translated ATA stat/err 0x%02x/%02x to " |
| 525 | "SCSI SK/ASC/ASCQ 0x%x/%02x/%02x\n", id, drv_stat, drv_err, |
| 526 | *sk, *asc, *ascq); |
| 527 | return; |
| 528 | } |
| 529 | |
| 530 | /* |
| 531 | * ata_gen_ata_desc_sense - Generate check condition sense block. |
| 532 | * @qc: Command that completed. |
| 533 | * |
| 534 | * This function is specific to the ATA descriptor format sense |
| 535 | * block specified for the ATA pass through commands. Regardless |
| 536 | * of whether the command errored or not, return a sense |
| 537 | * block. Copy all controller registers into the sense |
| 538 | * block. Clear sense key, ASC & ASCQ if there is no error. |
| 539 | * |
| 540 | * LOCKING: |
| 541 | * spin_lock_irqsave(host_set lock) |
| 542 | */ |
| 543 | void ata_gen_ata_desc_sense(struct ata_queued_cmd *qc) |
| 544 | { |
| 545 | struct scsi_cmnd *cmd = qc->scsicmd; |
| 546 | struct ata_taskfile *tf = &qc->tf; |
| 547 | unsigned char *sb = cmd->sense_buffer; |
| 548 | unsigned char *desc = sb + 8; |
| 549 | |
| 550 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); |
| 551 | |
Jeff Garzik | 0e5dec4 | 2005-10-06 09:40:20 -0400 | [diff] [blame] | 552 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 553 | |
| 554 | /* |
| 555 | * Read the controller registers. |
| 556 | */ |
| 557 | assert(NULL != qc->ap->ops->tf_read); |
| 558 | qc->ap->ops->tf_read(qc->ap, tf); |
| 559 | |
| 560 | /* |
| 561 | * Use ata_to_sense_error() to map status register bits |
| 562 | * onto sense key, asc & ascq. |
| 563 | */ |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 564 | if (tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 565 | ata_to_sense_error(qc->ap->id, tf->command, tf->feature, |
| 566 | &sb[1], &sb[2], &sb[3]); |
| 567 | sb[1] &= 0x0f; |
| 568 | } |
| 569 | |
| 570 | /* |
| 571 | * Sense data is current and format is descriptor. |
| 572 | */ |
| 573 | sb[0] = 0x72; |
| 574 | |
| 575 | desc[0] = 0x09; |
| 576 | |
| 577 | /* |
| 578 | * Set length of additional sense data. |
| 579 | * Since we only populate descriptor 0, the total |
| 580 | * length is the same (fixed) length as descriptor 0. |
| 581 | */ |
| 582 | desc[1] = sb[7] = 14; |
| 583 | |
| 584 | /* |
| 585 | * Copy registers into sense buffer. |
| 586 | */ |
| 587 | desc[2] = 0x00; |
| 588 | desc[3] = tf->feature; /* == error reg */ |
| 589 | desc[5] = tf->nsect; |
| 590 | desc[7] = tf->lbal; |
| 591 | desc[9] = tf->lbam; |
| 592 | desc[11] = tf->lbah; |
| 593 | desc[12] = tf->device; |
| 594 | desc[13] = tf->command; /* == status reg */ |
| 595 | |
| 596 | /* |
| 597 | * Fill in Extend bit, and the high order bytes |
| 598 | * if applicable. |
| 599 | */ |
| 600 | if (tf->flags & ATA_TFLAG_LBA48) { |
| 601 | desc[2] |= 0x01; |
| 602 | desc[4] = tf->hob_nsect; |
| 603 | desc[6] = tf->hob_lbal; |
| 604 | desc[8] = tf->hob_lbam; |
| 605 | desc[10] = tf->hob_lbah; |
| 606 | } |
| 607 | } |
| 608 | |
| 609 | /** |
| 610 | * ata_gen_fixed_sense - generate a SCSI fixed sense block |
| 611 | * @qc: Command that we are erroring out |
| 612 | * |
| 613 | * Leverage ata_to_sense_error() to give us the codes. Fit our |
| 614 | * LBA in here if there's room. |
| 615 | * |
| 616 | * LOCKING: |
| 617 | * inherited from caller |
| 618 | */ |
| 619 | void ata_gen_fixed_sense(struct ata_queued_cmd *qc) |
| 620 | { |
| 621 | struct scsi_cmnd *cmd = qc->scsicmd; |
| 622 | struct ata_taskfile *tf = &qc->tf; |
| 623 | unsigned char *sb = cmd->sense_buffer; |
| 624 | |
| 625 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); |
| 626 | |
Jeff Garzik | 0e5dec4 | 2005-10-06 09:40:20 -0400 | [diff] [blame] | 627 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 628 | |
| 629 | /* |
| 630 | * Read the controller registers. |
| 631 | */ |
| 632 | assert(NULL != qc->ap->ops->tf_read); |
| 633 | qc->ap->ops->tf_read(qc->ap, tf); |
| 634 | |
| 635 | /* |
| 636 | * Use ata_to_sense_error() to map status register bits |
| 637 | * onto sense key, asc & ascq. |
| 638 | */ |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 639 | if (tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 640 | ata_to_sense_error(qc->ap->id, tf->command, tf->feature, |
| 641 | &sb[2], &sb[12], &sb[13]); |
| 642 | sb[2] &= 0x0f; |
| 643 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | |
| 645 | sb[0] = 0x70; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 646 | sb[7] = 0x0a; |
Jeff Garzik | 0274aa2 | 2005-06-22 13:50:56 -0400 | [diff] [blame] | 647 | |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 648 | if (tf->flags & ATA_TFLAG_LBA48) { |
| 649 | /* TODO: find solution for LBA48 descriptors */ |
| 650 | } |
| 651 | |
| 652 | else if (tf->flags & ATA_TFLAG_LBA) { |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 653 | /* A small (28b) LBA will fit in the 32b info field */ |
| 654 | sb[0] |= 0x80; /* set valid bit */ |
| 655 | sb[3] = tf->device & 0x0f; |
| 656 | sb[4] = tf->lbah; |
| 657 | sb[5] = tf->lbam; |
| 658 | sb[6] = tf->lbal; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | } |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 660 | |
| 661 | else { |
| 662 | /* TODO: C/H/S */ |
| 663 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | } |
| 665 | |
| 666 | /** |
| 667 | * ata_scsi_slave_config - Set SCSI device attributes |
| 668 | * @sdev: SCSI device to examine |
| 669 | * |
| 670 | * This is called before we actually start reading |
| 671 | * and writing to the device, to configure certain |
| 672 | * SCSI mid-layer behaviors. |
| 673 | * |
| 674 | * LOCKING: |
| 675 | * Defined by SCSI layer. We don't really care. |
| 676 | */ |
| 677 | |
| 678 | int ata_scsi_slave_config(struct scsi_device *sdev) |
| 679 | { |
| 680 | sdev->use_10_for_rw = 1; |
| 681 | sdev->use_10_for_ms = 1; |
| 682 | |
| 683 | blk_queue_max_phys_segments(sdev->request_queue, LIBATA_MAX_PRD); |
| 684 | |
| 685 | if (sdev->id < ATA_MAX_DEVICES) { |
| 686 | struct ata_port *ap; |
| 687 | struct ata_device *dev; |
| 688 | |
| 689 | ap = (struct ata_port *) &sdev->host->hostdata[0]; |
| 690 | dev = &ap->device[sdev->id]; |
| 691 | |
| 692 | /* TODO: 1024 is an arbitrary number, not the |
| 693 | * hardware maximum. This should be increased to |
| 694 | * 65534 when Jens Axboe's patch for dynamically |
| 695 | * determining max_sectors is merged. |
| 696 | */ |
| 697 | if ((dev->flags & ATA_DFLAG_LBA48) && |
| 698 | ((dev->flags & ATA_DFLAG_LOCK_SECTORS) == 0)) { |
John W. Linville | f85bdb9 | 2005-05-12 15:49:54 -0400 | [diff] [blame] | 699 | /* |
| 700 | * do not overwrite sdev->host->max_sectors, since |
| 701 | * other drives on this host may not support LBA48 |
| 702 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | blk_queue_max_sectors(sdev->request_queue, 2048); |
| 704 | } |
| 705 | } |
| 706 | |
| 707 | return 0; /* scsi layer doesn't check return value, sigh */ |
| 708 | } |
| 709 | |
| 710 | /** |
| 711 | * ata_scsi_error - SCSI layer error handler callback |
| 712 | * @host: SCSI host on which error occurred |
| 713 | * |
| 714 | * Handles SCSI-layer-thrown error events. |
| 715 | * |
| 716 | * LOCKING: |
| 717 | * Inherited from SCSI layer (none, can sleep) |
| 718 | * |
| 719 | * RETURNS: |
| 720 | * Zero. |
| 721 | */ |
| 722 | |
| 723 | int ata_scsi_error(struct Scsi_Host *host) |
| 724 | { |
| 725 | struct ata_port *ap; |
| 726 | |
| 727 | DPRINTK("ENTER\n"); |
| 728 | |
| 729 | ap = (struct ata_port *) &host->hostdata[0]; |
| 730 | ap->ops->eng_timeout(ap); |
| 731 | |
| 732 | /* TODO: this is per-command; when queueing is supported |
| 733 | * this code will either change or move to a more |
| 734 | * appropriate place |
| 735 | */ |
| 736 | host->host_failed--; |
Tejun Heo | 42517438 | 2005-08-10 13:38:27 -0400 | [diff] [blame] | 737 | INIT_LIST_HEAD(&host->eh_cmd_q); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | |
| 739 | DPRINTK("EXIT\n"); |
| 740 | return 0; |
| 741 | } |
| 742 | |
| 743 | /** |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 744 | * ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command |
| 745 | * @qc: Storage for translated ATA taskfile |
| 746 | * @scsicmd: SCSI command to translate |
| 747 | * |
| 748 | * Sets up an ATA taskfile to issue STANDBY (to stop) or READ VERIFY |
| 749 | * (to start). Perhaps these commands should be preceded by |
| 750 | * CHECK POWER MODE to see what power mode the device is already in. |
| 751 | * [See SAT revision 5 at www.t10.org] |
| 752 | * |
| 753 | * LOCKING: |
| 754 | * spin_lock_irqsave(host_set lock) |
| 755 | * |
| 756 | * RETURNS: |
| 757 | * Zero on success, non-zero on error. |
| 758 | */ |
| 759 | |
| 760 | static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc, |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 761 | const u8 *scsicmd) |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 762 | { |
| 763 | struct ata_taskfile *tf = &qc->tf; |
| 764 | |
| 765 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; |
| 766 | tf->protocol = ATA_PROT_NODATA; |
| 767 | if (scsicmd[1] & 0x1) { |
| 768 | ; /* ignore IMMED bit, violates sat-r05 */ |
| 769 | } |
| 770 | if (scsicmd[4] & 0x2) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 771 | goto invalid_fld; /* LOEJ bit set not supported */ |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 772 | if (((scsicmd[4] >> 4) & 0xf) != 0) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 773 | goto invalid_fld; /* power conditions not supported */ |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 774 | if (scsicmd[4] & 0x1) { |
| 775 | tf->nsect = 1; /* 1 sector, lba=0 */ |
Albert Lee | 9d5b130 | 2005-10-04 08:48:17 -0400 | [diff] [blame] | 776 | |
| 777 | if (qc->dev->flags & ATA_DFLAG_LBA) { |
| 778 | qc->tf.flags |= ATA_TFLAG_LBA; |
| 779 | |
| 780 | tf->lbah = 0x0; |
| 781 | tf->lbam = 0x0; |
| 782 | tf->lbal = 0x0; |
| 783 | tf->device |= ATA_LBA; |
| 784 | } else { |
| 785 | /* CHS */ |
| 786 | tf->lbal = 0x1; /* sect */ |
| 787 | tf->lbam = 0x0; /* cyl low */ |
| 788 | tf->lbah = 0x0; /* cyl high */ |
| 789 | } |
| 790 | |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 791 | tf->command = ATA_CMD_VERIFY; /* READ VERIFY */ |
| 792 | } else { |
| 793 | tf->nsect = 0; /* time period value (0 implies now) */ |
| 794 | tf->command = ATA_CMD_STANDBY; |
| 795 | /* Consider: ATA STANDBY IMMEDIATE command */ |
| 796 | } |
| 797 | /* |
| 798 | * Standby and Idle condition timers could be implemented but that |
| 799 | * would require libata to implement the Power condition mode page |
| 800 | * and allow the user to change it. Changing mode pages requires |
| 801 | * MODE SELECT to be implemented. |
| 802 | */ |
| 803 | |
| 804 | return 0; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 805 | |
| 806 | invalid_fld: |
| 807 | ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x24, 0x0); |
| 808 | /* "Invalid field in cbd" */ |
| 809 | return 1; |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 810 | } |
| 811 | |
| 812 | |
| 813 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | * ata_scsi_flush_xlat - Translate SCSI SYNCHRONIZE CACHE command |
| 815 | * @qc: Storage for translated ATA taskfile |
| 816 | * @scsicmd: SCSI command to translate (ignored) |
| 817 | * |
| 818 | * Sets up an ATA taskfile to issue FLUSH CACHE or |
| 819 | * FLUSH CACHE EXT. |
| 820 | * |
| 821 | * LOCKING: |
| 822 | * spin_lock_irqsave(host_set lock) |
| 823 | * |
| 824 | * RETURNS: |
| 825 | * Zero on success, non-zero on error. |
| 826 | */ |
| 827 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 828 | static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc, const u8 *scsicmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | { |
| 830 | struct ata_taskfile *tf = &qc->tf; |
| 831 | |
| 832 | tf->flags |= ATA_TFLAG_DEVICE; |
| 833 | tf->protocol = ATA_PROT_NODATA; |
| 834 | |
Albert Lee | 0750669 | 2005-10-12 15:04:18 +0800 | [diff] [blame] | 835 | if ((qc->dev->flags & ATA_DFLAG_LBA48) && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | (ata_id_has_flush_ext(qc->dev->id))) |
| 837 | tf->command = ATA_CMD_FLUSH_EXT; |
| 838 | else |
| 839 | tf->command = ATA_CMD_FLUSH; |
| 840 | |
| 841 | return 0; |
| 842 | } |
| 843 | |
| 844 | /** |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 845 | * scsi_6_lba_len - Get LBA and transfer length |
| 846 | * @scsicmd: SCSI command to translate |
| 847 | * |
| 848 | * Calculate LBA and transfer length for 6-byte commands. |
| 849 | * |
| 850 | * RETURNS: |
| 851 | * @plba: the LBA |
| 852 | * @plen: the transfer length |
| 853 | */ |
| 854 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 855 | static void scsi_6_lba_len(const u8 *scsicmd, u64 *plba, u32 *plen) |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 856 | { |
| 857 | u64 lba = 0; |
| 858 | u32 len = 0; |
| 859 | |
| 860 | VPRINTK("six-byte command\n"); |
| 861 | |
| 862 | lba |= ((u64)scsicmd[2]) << 8; |
| 863 | lba |= ((u64)scsicmd[3]); |
| 864 | |
| 865 | len |= ((u32)scsicmd[4]); |
| 866 | |
| 867 | *plba = lba; |
| 868 | *plen = len; |
| 869 | } |
| 870 | |
| 871 | /** |
| 872 | * scsi_10_lba_len - Get LBA and transfer length |
| 873 | * @scsicmd: SCSI command to translate |
| 874 | * |
| 875 | * Calculate LBA and transfer length for 10-byte commands. |
| 876 | * |
| 877 | * RETURNS: |
| 878 | * @plba: the LBA |
| 879 | * @plen: the transfer length |
| 880 | */ |
| 881 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 882 | static void scsi_10_lba_len(const u8 *scsicmd, u64 *plba, u32 *plen) |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 883 | { |
| 884 | u64 lba = 0; |
| 885 | u32 len = 0; |
| 886 | |
| 887 | VPRINTK("ten-byte command\n"); |
| 888 | |
| 889 | lba |= ((u64)scsicmd[2]) << 24; |
| 890 | lba |= ((u64)scsicmd[3]) << 16; |
| 891 | lba |= ((u64)scsicmd[4]) << 8; |
| 892 | lba |= ((u64)scsicmd[5]); |
| 893 | |
| 894 | len |= ((u32)scsicmd[7]) << 8; |
| 895 | len |= ((u32)scsicmd[8]); |
| 896 | |
| 897 | *plba = lba; |
| 898 | *plen = len; |
| 899 | } |
| 900 | |
| 901 | /** |
| 902 | * scsi_16_lba_len - Get LBA and transfer length |
| 903 | * @scsicmd: SCSI command to translate |
| 904 | * |
| 905 | * Calculate LBA and transfer length for 16-byte commands. |
| 906 | * |
| 907 | * RETURNS: |
| 908 | * @plba: the LBA |
| 909 | * @plen: the transfer length |
| 910 | */ |
| 911 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 912 | static void scsi_16_lba_len(const u8 *scsicmd, u64 *plba, u32 *plen) |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 913 | { |
| 914 | u64 lba = 0; |
| 915 | u32 len = 0; |
| 916 | |
| 917 | VPRINTK("sixteen-byte command\n"); |
| 918 | |
| 919 | lba |= ((u64)scsicmd[2]) << 56; |
| 920 | lba |= ((u64)scsicmd[3]) << 48; |
| 921 | lba |= ((u64)scsicmd[4]) << 40; |
| 922 | lba |= ((u64)scsicmd[5]) << 32; |
| 923 | lba |= ((u64)scsicmd[6]) << 24; |
| 924 | lba |= ((u64)scsicmd[7]) << 16; |
| 925 | lba |= ((u64)scsicmd[8]) << 8; |
| 926 | lba |= ((u64)scsicmd[9]); |
| 927 | |
| 928 | len |= ((u32)scsicmd[10]) << 24; |
| 929 | len |= ((u32)scsicmd[11]) << 16; |
| 930 | len |= ((u32)scsicmd[12]) << 8; |
| 931 | len |= ((u32)scsicmd[13]); |
| 932 | |
| 933 | *plba = lba; |
| 934 | *plen = len; |
| 935 | } |
| 936 | |
| 937 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | * ata_scsi_verify_xlat - Translate SCSI VERIFY command into an ATA one |
| 939 | * @qc: Storage for translated ATA taskfile |
| 940 | * @scsicmd: SCSI command to translate |
| 941 | * |
| 942 | * Converts SCSI VERIFY command to an ATA READ VERIFY command. |
| 943 | * |
| 944 | * LOCKING: |
| 945 | * spin_lock_irqsave(host_set lock) |
| 946 | * |
| 947 | * RETURNS: |
| 948 | * Zero on success, non-zero on error. |
| 949 | */ |
| 950 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 951 | static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc, const u8 *scsicmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | { |
| 953 | struct ata_taskfile *tf = &qc->tf; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 954 | struct ata_device *dev = qc->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | u64 dev_sectors = qc->dev->n_sectors; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 956 | u64 block; |
| 957 | u32 n_block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | |
| 959 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 960 | tf->protocol = ATA_PROT_NODATA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 961 | |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 962 | if (scsicmd[0] == VERIFY) |
| 963 | scsi_10_lba_len(scsicmd, &block, &n_block); |
| 964 | else if (scsicmd[0] == VERIFY_16) |
| 965 | scsi_16_lba_len(scsicmd, &block, &n_block); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 966 | else |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 967 | goto invalid_fld; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 969 | if (!n_block) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 970 | goto nothing_to_do; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 971 | if (block >= dev_sectors) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 972 | goto out_of_range; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 973 | if ((block + n_block) > dev_sectors) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 974 | goto out_of_range; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | |
Albert Lee | 0750669 | 2005-10-12 15:04:18 +0800 | [diff] [blame] | 976 | if (dev->flags & ATA_DFLAG_LBA) { |
| 977 | tf->flags |= ATA_TFLAG_LBA; |
| 978 | |
| 979 | if (dev->flags & ATA_DFLAG_LBA48) { |
| 980 | if (n_block > (64 * 1024)) |
| 981 | goto invalid_fld; |
| 982 | |
| 983 | /* use LBA48 */ |
| 984 | tf->flags |= ATA_TFLAG_LBA48; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 985 | tf->command = ATA_CMD_VERIFY_EXT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 987 | tf->hob_nsect = (n_block >> 8) & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 989 | tf->hob_lbah = (block >> 40) & 0xff; |
| 990 | tf->hob_lbam = (block >> 32) & 0xff; |
| 991 | tf->hob_lbal = (block >> 24) & 0xff; |
| 992 | } else { |
Albert Lee | 0750669 | 2005-10-12 15:04:18 +0800 | [diff] [blame] | 993 | if (n_block > 256) |
| 994 | goto invalid_fld; |
| 995 | |
| 996 | /* use LBA28 */ |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 997 | tf->command = ATA_CMD_VERIFY; |
| 998 | |
| 999 | tf->device |= (block >> 24) & 0xf; |
| 1000 | } |
| 1001 | |
| 1002 | tf->nsect = n_block & 0xff; |
| 1003 | |
| 1004 | tf->lbah = (block >> 16) & 0xff; |
| 1005 | tf->lbam = (block >> 8) & 0xff; |
| 1006 | tf->lbal = block & 0xff; |
| 1007 | |
| 1008 | tf->device |= ATA_LBA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1009 | } else { |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1010 | /* CHS */ |
| 1011 | u32 sect, head, cyl, track; |
| 1012 | |
Albert Lee | 0750669 | 2005-10-12 15:04:18 +0800 | [diff] [blame] | 1013 | if (n_block > 256) |
| 1014 | goto invalid_fld; |
| 1015 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1016 | /* Convert LBA to CHS */ |
| 1017 | track = (u32)block / dev->sectors; |
| 1018 | cyl = track / dev->heads; |
| 1019 | head = track % dev->heads; |
| 1020 | sect = (u32)block % dev->sectors + 1; |
| 1021 | |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1022 | DPRINTK("block %u track %u cyl %u head %u sect %u\n", |
| 1023 | (u32)block, track, cyl, head, sect); |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1024 | |
| 1025 | /* Check whether the converted CHS can fit. |
| 1026 | Cylinder: 0-65535 |
| 1027 | Head: 0-15 |
| 1028 | Sector: 1-255*/ |
| 1029 | if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect)) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1030 | goto out_of_range; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1031 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | tf->command = ATA_CMD_VERIFY; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1033 | tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */ |
| 1034 | tf->lbal = sect; |
| 1035 | tf->lbam = cyl; |
| 1036 | tf->lbah = cyl >> 8; |
| 1037 | tf->device |= head; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1038 | } |
| 1039 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1040 | return 0; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1041 | |
| 1042 | invalid_fld: |
| 1043 | ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x24, 0x0); |
| 1044 | /* "Invalid field in cbd" */ |
| 1045 | return 1; |
| 1046 | |
| 1047 | out_of_range: |
| 1048 | ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x21, 0x0); |
| 1049 | /* "Logical Block Address out of range" */ |
| 1050 | return 1; |
| 1051 | |
| 1052 | nothing_to_do: |
| 1053 | qc->scsicmd->result = SAM_STAT_GOOD; |
| 1054 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1055 | } |
| 1056 | |
| 1057 | /** |
| 1058 | * ata_scsi_rw_xlat - Translate SCSI r/w command into an ATA one |
| 1059 | * @qc: Storage for translated ATA taskfile |
| 1060 | * @scsicmd: SCSI command to translate |
| 1061 | * |
| 1062 | * Converts any of six SCSI read/write commands into the |
| 1063 | * ATA counterpart, including starting sector (LBA), |
| 1064 | * sector count, and taking into account the device's LBA48 |
| 1065 | * support. |
| 1066 | * |
| 1067 | * Commands %READ_6, %READ_10, %READ_16, %WRITE_6, %WRITE_10, and |
| 1068 | * %WRITE_16 are currently supported. |
| 1069 | * |
| 1070 | * LOCKING: |
| 1071 | * spin_lock_irqsave(host_set lock) |
| 1072 | * |
| 1073 | * RETURNS: |
| 1074 | * Zero on success, non-zero on error. |
| 1075 | */ |
| 1076 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 1077 | static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, const u8 *scsicmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1078 | { |
| 1079 | struct ata_taskfile *tf = &qc->tf; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1080 | struct ata_device *dev = qc->dev; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1081 | u64 block; |
| 1082 | u32 n_block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1083 | |
| 1084 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1085 | |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 1086 | if (scsicmd[0] == WRITE_10 || scsicmd[0] == WRITE_6 || |
| 1087 | scsicmd[0] == WRITE_16) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1088 | tf->flags |= ATA_TFLAG_WRITE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1090 | /* Calculate the SCSI LBA and transfer length. */ |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1091 | switch (scsicmd[0]) { |
| 1092 | case READ_10: |
| 1093 | case WRITE_10: |
| 1094 | scsi_10_lba_len(scsicmd, &block, &n_block); |
| 1095 | break; |
| 1096 | case READ_6: |
| 1097 | case WRITE_6: |
| 1098 | scsi_6_lba_len(scsicmd, &block, &n_block); |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1099 | |
| 1100 | /* for 6-byte r/w commands, transfer length 0 |
| 1101 | * means 256 blocks of data, not 0 block. |
| 1102 | */ |
Jeff Garzik | 76b2bf9 | 2005-08-29 19:24:43 -0400 | [diff] [blame] | 1103 | if (!n_block) |
| 1104 | n_block = 256; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1105 | break; |
| 1106 | case READ_16: |
| 1107 | case WRITE_16: |
| 1108 | scsi_16_lba_len(scsicmd, &block, &n_block); |
| 1109 | break; |
| 1110 | default: |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1111 | DPRINTK("no-byte command\n"); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1112 | goto invalid_fld; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1113 | } |
| 1114 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1115 | /* Check and compose ATA command */ |
| 1116 | if (!n_block) |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1117 | /* For 10-byte and 16-byte SCSI R/W commands, transfer |
| 1118 | * length 0 means transfer 0 block of data. |
| 1119 | * However, for ATA R/W commands, sector count 0 means |
| 1120 | * 256 or 65536 sectors, not 0 sectors as in SCSI. |
| 1121 | */ |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1122 | goto nothing_to_do; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1123 | |
Albert Lee | 0750669 | 2005-10-12 15:04:18 +0800 | [diff] [blame] | 1124 | if (dev->flags & ATA_DFLAG_LBA) { |
| 1125 | tf->flags |= ATA_TFLAG_LBA; |
| 1126 | |
| 1127 | if (dev->flags & ATA_DFLAG_LBA48) { |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1128 | /* The request -may- be too large for LBA48. */ |
| 1129 | if ((block >> 48) || (n_block > 65536)) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1130 | goto out_of_range; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1131 | |
Albert Lee | 0750669 | 2005-10-12 15:04:18 +0800 | [diff] [blame] | 1132 | /* use LBA48 */ |
| 1133 | tf->flags |= ATA_TFLAG_LBA48; |
| 1134 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1135 | tf->hob_nsect = (n_block >> 8) & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1137 | tf->hob_lbah = (block >> 40) & 0xff; |
| 1138 | tf->hob_lbam = (block >> 32) & 0xff; |
| 1139 | tf->hob_lbal = (block >> 24) & 0xff; |
| 1140 | } else { |
Albert Lee | 0750669 | 2005-10-12 15:04:18 +0800 | [diff] [blame] | 1141 | /* use LBA28 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1143 | /* The request -may- be too large for LBA28. */ |
| 1144 | if ((block >> 28) || (n_block > 256)) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1145 | goto out_of_range; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1146 | |
| 1147 | tf->device |= (block >> 24) & 0xf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1148 | } |
| 1149 | |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 1150 | ata_rwcmd_protocol(qc); |
| 1151 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1152 | qc->nsect = n_block; |
| 1153 | tf->nsect = n_block & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1154 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1155 | tf->lbah = (block >> 16) & 0xff; |
| 1156 | tf->lbam = (block >> 8) & 0xff; |
| 1157 | tf->lbal = block & 0xff; |
| 1158 | |
| 1159 | tf->device |= ATA_LBA; |
| 1160 | } else { |
| 1161 | /* CHS */ |
| 1162 | u32 sect, head, cyl, track; |
| 1163 | |
| 1164 | /* The request -may- be too large for CHS addressing. */ |
| 1165 | if ((block >> 28) || (n_block > 256)) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1166 | goto out_of_range; |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1167 | |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 1168 | ata_rwcmd_protocol(qc); |
| 1169 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1170 | /* Convert LBA to CHS */ |
| 1171 | track = (u32)block / dev->sectors; |
| 1172 | cyl = track / dev->heads; |
| 1173 | head = track % dev->heads; |
| 1174 | sect = (u32)block % dev->sectors + 1; |
| 1175 | |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1176 | DPRINTK("block %u track %u cyl %u head %u sect %u\n", |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1177 | (u32)block, track, cyl, head, sect); |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1178 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1179 | /* Check whether the converted CHS can fit. |
| 1180 | Cylinder: 0-65535 |
| 1181 | Head: 0-15 |
| 1182 | Sector: 1-255*/ |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1183 | if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect)) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1184 | goto out_of_range; |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1185 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1186 | qc->nsect = n_block; |
| 1187 | tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */ |
| 1188 | tf->lbal = sect; |
| 1189 | tf->lbam = cyl; |
| 1190 | tf->lbah = cyl >> 8; |
| 1191 | tf->device |= head; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1192 | } |
| 1193 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1194 | return 0; |
Jeff Garzik | 1359326 | 2005-08-27 04:20:12 -0400 | [diff] [blame] | 1195 | |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1196 | invalid_fld: |
| 1197 | ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x24, 0x0); |
| 1198 | /* "Invalid field in cbd" */ |
| 1199 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1200 | |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1201 | out_of_range: |
| 1202 | ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x21, 0x0); |
| 1203 | /* "Logical Block Address out of range" */ |
| 1204 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1205 | |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1206 | nothing_to_do: |
| 1207 | qc->scsicmd->result = SAM_STAT_GOOD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | return 1; |
| 1209 | } |
| 1210 | |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 1211 | static int ata_scsi_qc_complete(struct ata_queued_cmd *qc, |
| 1212 | unsigned int err_mask) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1213 | { |
| 1214 | struct scsi_cmnd *cmd = qc->scsicmd; |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 1215 | u8 *cdb = cmd->cmnd; |
| 1216 | int need_sense = (err_mask != 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1217 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1218 | /* For ATA pass thru (SAT) commands, generate a sense block if |
| 1219 | * user mandated it or if there's an error. Note that if we |
| 1220 | * generate because the user forced us to, a check condition |
| 1221 | * is generated and the ATA register values are returned |
| 1222 | * whether the command completed successfully or not. If there |
| 1223 | * was no error, SK, ASC and ASCQ will all be zero. |
| 1224 | */ |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 1225 | if (((cdb[0] == ATA_16) || (cdb[0] == ATA_12)) && |
| 1226 | ((cdb[2] & 0x20) || need_sense)) { |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1227 | ata_gen_ata_desc_sense(qc); |
| 1228 | } else { |
| 1229 | if (!need_sense) { |
| 1230 | cmd->result = SAM_STAT_GOOD; |
| 1231 | } else { |
| 1232 | /* TODO: decide which descriptor format to use |
| 1233 | * for 48b LBA devices and call that here |
| 1234 | * instead of the fixed desc, which is only |
| 1235 | * good for smaller LBA (and maybe CHS?) |
| 1236 | * devices. |
| 1237 | */ |
| 1238 | ata_gen_fixed_sense(qc); |
| 1239 | } |
| 1240 | } |
| 1241 | |
| 1242 | if (need_sense) { |
| 1243 | /* The ata_gen_..._sense routines fill in tf */ |
| 1244 | ata_dump_status(qc->ap->id, &qc->tf); |
| 1245 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1246 | |
| 1247 | qc->scsidone(cmd); |
| 1248 | |
| 1249 | return 0; |
| 1250 | } |
| 1251 | |
| 1252 | /** |
| 1253 | * ata_scsi_translate - Translate then issue SCSI command to ATA device |
| 1254 | * @ap: ATA port to which the command is addressed |
| 1255 | * @dev: ATA device to which the command is addressed |
| 1256 | * @cmd: SCSI command to execute |
| 1257 | * @done: SCSI command completion function |
| 1258 | * @xlat_func: Actor which translates @cmd to an ATA taskfile |
| 1259 | * |
| 1260 | * Our ->queuecommand() function has decided that the SCSI |
| 1261 | * command issued can be directly translated into an ATA |
| 1262 | * command, rather than handled internally. |
| 1263 | * |
| 1264 | * This function sets up an ata_queued_cmd structure for the |
| 1265 | * SCSI command, and sends that ata_queued_cmd to the hardware. |
| 1266 | * |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1267 | * The xlat_func argument (actor) returns 0 if ready to execute |
| 1268 | * ATA command, else 1 to finish translation. If 1 is returned |
| 1269 | * then cmd->result (and possibly cmd->sense_buffer) are assumed |
| 1270 | * to be set reflecting an error condition or clean (early) |
| 1271 | * termination. |
| 1272 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1273 | * LOCKING: |
| 1274 | * spin_lock_irqsave(host_set lock) |
| 1275 | */ |
| 1276 | |
| 1277 | static void ata_scsi_translate(struct ata_port *ap, struct ata_device *dev, |
| 1278 | struct scsi_cmnd *cmd, |
| 1279 | void (*done)(struct scsi_cmnd *), |
| 1280 | ata_xlat_func_t xlat_func) |
| 1281 | { |
| 1282 | struct ata_queued_cmd *qc; |
| 1283 | u8 *scsicmd = cmd->cmnd; |
| 1284 | |
| 1285 | VPRINTK("ENTER\n"); |
| 1286 | |
| 1287 | qc = ata_scsi_qc_new(ap, dev, cmd, done); |
| 1288 | if (!qc) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1289 | goto err_mem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1290 | |
| 1291 | /* data is present; dma-map it */ |
Jeff Garzik | 0274aa2 | 2005-06-22 13:50:56 -0400 | [diff] [blame] | 1292 | if (cmd->sc_data_direction == DMA_FROM_DEVICE || |
| 1293 | cmd->sc_data_direction == DMA_TO_DEVICE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1294 | if (unlikely(cmd->request_bufflen < 1)) { |
| 1295 | printk(KERN_WARNING "ata%u(%u): WARNING: zero len r/w req\n", |
| 1296 | ap->id, dev->devno); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1297 | goto err_did; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | } |
| 1299 | |
| 1300 | if (cmd->use_sg) |
| 1301 | ata_sg_init(qc, cmd->request_buffer, cmd->use_sg); |
| 1302 | else |
| 1303 | ata_sg_init_one(qc, cmd->request_buffer, |
| 1304 | cmd->request_bufflen); |
| 1305 | |
| 1306 | qc->dma_dir = cmd->sc_data_direction; |
| 1307 | } |
| 1308 | |
| 1309 | qc->complete_fn = ata_scsi_qc_complete; |
| 1310 | |
| 1311 | if (xlat_func(qc, scsicmd)) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1312 | goto early_finish; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1313 | |
| 1314 | /* select device, send command to hardware */ |
| 1315 | if (ata_qc_issue(qc)) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1316 | goto err_did; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1317 | |
| 1318 | VPRINTK("EXIT\n"); |
| 1319 | return; |
| 1320 | |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1321 | early_finish: |
| 1322 | ata_qc_free(qc); |
| 1323 | done(cmd); |
| 1324 | DPRINTK("EXIT - early finish (good or error)\n"); |
| 1325 | return; |
| 1326 | |
| 1327 | err_did: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1328 | ata_qc_free(qc); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1329 | err_mem: |
| 1330 | cmd->result = (DID_ERROR << 16); |
| 1331 | done(cmd); |
| 1332 | DPRINTK("EXIT - internal\n"); |
| 1333 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1334 | } |
| 1335 | |
| 1336 | /** |
| 1337 | * ata_scsi_rbuf_get - Map response buffer. |
| 1338 | * @cmd: SCSI command containing buffer to be mapped. |
| 1339 | * @buf_out: Pointer to mapped area. |
| 1340 | * |
| 1341 | * Maps buffer contained within SCSI command @cmd. |
| 1342 | * |
| 1343 | * LOCKING: |
| 1344 | * spin_lock_irqsave(host_set lock) |
| 1345 | * |
| 1346 | * RETURNS: |
| 1347 | * Length of response buffer. |
| 1348 | */ |
| 1349 | |
| 1350 | static unsigned int ata_scsi_rbuf_get(struct scsi_cmnd *cmd, u8 **buf_out) |
| 1351 | { |
| 1352 | u8 *buf; |
| 1353 | unsigned int buflen; |
| 1354 | |
| 1355 | if (cmd->use_sg) { |
| 1356 | struct scatterlist *sg; |
| 1357 | |
| 1358 | sg = (struct scatterlist *) cmd->request_buffer; |
| 1359 | buf = kmap_atomic(sg->page, KM_USER0) + sg->offset; |
| 1360 | buflen = sg->length; |
| 1361 | } else { |
| 1362 | buf = cmd->request_buffer; |
| 1363 | buflen = cmd->request_bufflen; |
| 1364 | } |
| 1365 | |
| 1366 | *buf_out = buf; |
| 1367 | return buflen; |
| 1368 | } |
| 1369 | |
| 1370 | /** |
| 1371 | * ata_scsi_rbuf_put - Unmap response buffer. |
| 1372 | * @cmd: SCSI command containing buffer to be unmapped. |
| 1373 | * @buf: buffer to unmap |
| 1374 | * |
| 1375 | * Unmaps response buffer contained within @cmd. |
| 1376 | * |
| 1377 | * LOCKING: |
| 1378 | * spin_lock_irqsave(host_set lock) |
| 1379 | */ |
| 1380 | |
| 1381 | static inline void ata_scsi_rbuf_put(struct scsi_cmnd *cmd, u8 *buf) |
| 1382 | { |
| 1383 | if (cmd->use_sg) { |
| 1384 | struct scatterlist *sg; |
| 1385 | |
| 1386 | sg = (struct scatterlist *) cmd->request_buffer; |
| 1387 | kunmap_atomic(buf - sg->offset, KM_USER0); |
| 1388 | } |
| 1389 | } |
| 1390 | |
| 1391 | /** |
| 1392 | * ata_scsi_rbuf_fill - wrapper for SCSI command simulators |
| 1393 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1394 | * @actor: Callback hook for desired SCSI command simulator |
| 1395 | * |
| 1396 | * Takes care of the hard work of simulating a SCSI command... |
| 1397 | * Mapping the response buffer, calling the command's handler, |
| 1398 | * and handling the handler's return value. This return value |
| 1399 | * indicates whether the handler wishes the SCSI command to be |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1400 | * completed successfully (0), or not (in which case cmd->result |
| 1401 | * and sense buffer are assumed to be set). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1402 | * |
| 1403 | * LOCKING: |
| 1404 | * spin_lock_irqsave(host_set lock) |
| 1405 | */ |
| 1406 | |
| 1407 | void ata_scsi_rbuf_fill(struct ata_scsi_args *args, |
| 1408 | unsigned int (*actor) (struct ata_scsi_args *args, |
| 1409 | u8 *rbuf, unsigned int buflen)) |
| 1410 | { |
| 1411 | u8 *rbuf; |
| 1412 | unsigned int buflen, rc; |
| 1413 | struct scsi_cmnd *cmd = args->cmd; |
| 1414 | |
| 1415 | buflen = ata_scsi_rbuf_get(cmd, &rbuf); |
| 1416 | memset(rbuf, 0, buflen); |
| 1417 | rc = actor(args, rbuf, buflen); |
| 1418 | ata_scsi_rbuf_put(cmd, rbuf); |
| 1419 | |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1420 | if (rc == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1421 | cmd->result = SAM_STAT_GOOD; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1422 | args->done(cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1423 | } |
| 1424 | |
| 1425 | /** |
| 1426 | * ata_scsiop_inq_std - Simulate INQUIRY command |
| 1427 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1428 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 1429 | * @buflen: Response buffer length. |
| 1430 | * |
| 1431 | * Returns standard device identification data associated |
| 1432 | * with non-EVPD INQUIRY command output. |
| 1433 | * |
| 1434 | * LOCKING: |
| 1435 | * spin_lock_irqsave(host_set lock) |
| 1436 | */ |
| 1437 | |
| 1438 | unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf, |
| 1439 | unsigned int buflen) |
| 1440 | { |
| 1441 | u8 hdr[] = { |
| 1442 | TYPE_DISK, |
| 1443 | 0, |
| 1444 | 0x5, /* claim SPC-3 version compatibility */ |
| 1445 | 2, |
| 1446 | 95 - 4 |
| 1447 | }; |
| 1448 | |
| 1449 | /* set scsi removeable (RMB) bit per ata bit */ |
| 1450 | if (ata_id_removeable(args->id)) |
| 1451 | hdr[1] |= (1 << 7); |
| 1452 | |
| 1453 | VPRINTK("ENTER\n"); |
| 1454 | |
| 1455 | memcpy(rbuf, hdr, sizeof(hdr)); |
| 1456 | |
| 1457 | if (buflen > 35) { |
| 1458 | memcpy(&rbuf[8], "ATA ", 8); |
| 1459 | ata_dev_id_string(args->id, &rbuf[16], ATA_ID_PROD_OFS, 16); |
| 1460 | ata_dev_id_string(args->id, &rbuf[32], ATA_ID_FW_REV_OFS, 4); |
| 1461 | if (rbuf[32] == 0 || rbuf[32] == ' ') |
| 1462 | memcpy(&rbuf[32], "n/a ", 4); |
| 1463 | } |
| 1464 | |
| 1465 | if (buflen > 63) { |
| 1466 | const u8 versions[] = { |
| 1467 | 0x60, /* SAM-3 (no version claimed) */ |
| 1468 | |
| 1469 | 0x03, |
| 1470 | 0x20, /* SBC-2 (no version claimed) */ |
| 1471 | |
| 1472 | 0x02, |
| 1473 | 0x60 /* SPC-3 (no version claimed) */ |
| 1474 | }; |
| 1475 | |
| 1476 | memcpy(rbuf + 59, versions, sizeof(versions)); |
| 1477 | } |
| 1478 | |
| 1479 | return 0; |
| 1480 | } |
| 1481 | |
| 1482 | /** |
| 1483 | * ata_scsiop_inq_00 - Simulate INQUIRY EVPD page 0, list of pages |
| 1484 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1485 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 1486 | * @buflen: Response buffer length. |
| 1487 | * |
| 1488 | * Returns list of inquiry EVPD pages available. |
| 1489 | * |
| 1490 | * LOCKING: |
| 1491 | * spin_lock_irqsave(host_set lock) |
| 1492 | */ |
| 1493 | |
| 1494 | unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf, |
| 1495 | unsigned int buflen) |
| 1496 | { |
| 1497 | const u8 pages[] = { |
| 1498 | 0x00, /* page 0x00, this page */ |
| 1499 | 0x80, /* page 0x80, unit serial no page */ |
| 1500 | 0x83 /* page 0x83, device ident page */ |
| 1501 | }; |
| 1502 | rbuf[3] = sizeof(pages); /* number of supported EVPD pages */ |
| 1503 | |
| 1504 | if (buflen > 6) |
| 1505 | memcpy(rbuf + 4, pages, sizeof(pages)); |
| 1506 | |
| 1507 | return 0; |
| 1508 | } |
| 1509 | |
| 1510 | /** |
| 1511 | * ata_scsiop_inq_80 - Simulate INQUIRY EVPD page 80, device serial number |
| 1512 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1513 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 1514 | * @buflen: Response buffer length. |
| 1515 | * |
| 1516 | * Returns ATA device serial number. |
| 1517 | * |
| 1518 | * LOCKING: |
| 1519 | * spin_lock_irqsave(host_set lock) |
| 1520 | */ |
| 1521 | |
| 1522 | unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf, |
| 1523 | unsigned int buflen) |
| 1524 | { |
| 1525 | const u8 hdr[] = { |
| 1526 | 0, |
| 1527 | 0x80, /* this page code */ |
| 1528 | 0, |
| 1529 | ATA_SERNO_LEN, /* page len */ |
| 1530 | }; |
| 1531 | memcpy(rbuf, hdr, sizeof(hdr)); |
| 1532 | |
| 1533 | if (buflen > (ATA_SERNO_LEN + 4 - 1)) |
| 1534 | ata_dev_id_string(args->id, (unsigned char *) &rbuf[4], |
| 1535 | ATA_ID_SERNO_OFS, ATA_SERNO_LEN); |
| 1536 | |
| 1537 | return 0; |
| 1538 | } |
| 1539 | |
| 1540 | static const char *inq_83_str = "Linux ATA-SCSI simulator"; |
| 1541 | |
| 1542 | /** |
| 1543 | * ata_scsiop_inq_83 - Simulate INQUIRY EVPD page 83, device identity |
| 1544 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1545 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 1546 | * @buflen: Response buffer length. |
| 1547 | * |
| 1548 | * Returns device identification. Currently hardcoded to |
| 1549 | * return "Linux ATA-SCSI simulator". |
| 1550 | * |
| 1551 | * LOCKING: |
| 1552 | * spin_lock_irqsave(host_set lock) |
| 1553 | */ |
| 1554 | |
| 1555 | unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf, |
| 1556 | unsigned int buflen) |
| 1557 | { |
| 1558 | rbuf[1] = 0x83; /* this page code */ |
| 1559 | rbuf[3] = 4 + strlen(inq_83_str); /* page len */ |
| 1560 | |
| 1561 | /* our one and only identification descriptor (vendor-specific) */ |
| 1562 | if (buflen > (strlen(inq_83_str) + 4 + 4 - 1)) { |
| 1563 | rbuf[4 + 0] = 2; /* code set: ASCII */ |
| 1564 | rbuf[4 + 3] = strlen(inq_83_str); |
| 1565 | memcpy(rbuf + 4 + 4, inq_83_str, strlen(inq_83_str)); |
| 1566 | } |
| 1567 | |
| 1568 | return 0; |
| 1569 | } |
| 1570 | |
| 1571 | /** |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 1572 | * ata_scsiop_noop - Command handler that simply returns success. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1573 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1574 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 1575 | * @buflen: Response buffer length. |
| 1576 | * |
| 1577 | * No operation. Simply returns success to caller, to indicate |
| 1578 | * that the caller should successfully complete this SCSI command. |
| 1579 | * |
| 1580 | * LOCKING: |
| 1581 | * spin_lock_irqsave(host_set lock) |
| 1582 | */ |
| 1583 | |
| 1584 | unsigned int ata_scsiop_noop(struct ata_scsi_args *args, u8 *rbuf, |
| 1585 | unsigned int buflen) |
| 1586 | { |
| 1587 | VPRINTK("ENTER\n"); |
| 1588 | return 0; |
| 1589 | } |
| 1590 | |
| 1591 | /** |
| 1592 | * ata_msense_push - Push data onto MODE SENSE data output buffer |
| 1593 | * @ptr_io: (input/output) Location to store more output data |
| 1594 | * @last: End of output data buffer |
| 1595 | * @buf: Pointer to BLOB being added to output buffer |
| 1596 | * @buflen: Length of BLOB |
| 1597 | * |
| 1598 | * Store MODE SENSE data on an output buffer. |
| 1599 | * |
| 1600 | * LOCKING: |
| 1601 | * None. |
| 1602 | */ |
| 1603 | |
| 1604 | static void ata_msense_push(u8 **ptr_io, const u8 *last, |
| 1605 | const u8 *buf, unsigned int buflen) |
| 1606 | { |
| 1607 | u8 *ptr = *ptr_io; |
| 1608 | |
| 1609 | if ((ptr + buflen - 1) > last) |
| 1610 | return; |
| 1611 | |
| 1612 | memcpy(ptr, buf, buflen); |
| 1613 | |
| 1614 | ptr += buflen; |
| 1615 | |
| 1616 | *ptr_io = ptr; |
| 1617 | } |
| 1618 | |
| 1619 | /** |
| 1620 | * ata_msense_caching - Simulate MODE SENSE caching info page |
| 1621 | * @id: device IDENTIFY data |
| 1622 | * @ptr_io: (input/output) Location to store more output data |
| 1623 | * @last: End of output data buffer |
| 1624 | * |
| 1625 | * Generate a caching info page, which conditionally indicates |
| 1626 | * write caching to the SCSI layer, depending on device |
| 1627 | * capabilities. |
| 1628 | * |
| 1629 | * LOCKING: |
| 1630 | * None. |
| 1631 | */ |
| 1632 | |
| 1633 | static unsigned int ata_msense_caching(u16 *id, u8 **ptr_io, |
| 1634 | const u8 *last) |
| 1635 | { |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1636 | u8 page[CACHE_MPAGE_LEN]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1637 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1638 | memcpy(page, def_cache_mpage, sizeof(page)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1639 | if (ata_id_wcache_enabled(id)) |
| 1640 | page[2] |= (1 << 2); /* write cache enable */ |
| 1641 | if (!ata_id_rahead_enabled(id)) |
| 1642 | page[12] |= (1 << 5); /* disable read ahead */ |
| 1643 | |
| 1644 | ata_msense_push(ptr_io, last, page, sizeof(page)); |
| 1645 | return sizeof(page); |
| 1646 | } |
| 1647 | |
| 1648 | /** |
| 1649 | * ata_msense_ctl_mode - Simulate MODE SENSE control mode page |
| 1650 | * @dev: Device associated with this MODE SENSE command |
| 1651 | * @ptr_io: (input/output) Location to store more output data |
| 1652 | * @last: End of output data buffer |
| 1653 | * |
| 1654 | * Generate a generic MODE SENSE control mode page. |
| 1655 | * |
| 1656 | * LOCKING: |
| 1657 | * None. |
| 1658 | */ |
| 1659 | |
| 1660 | static unsigned int ata_msense_ctl_mode(u8 **ptr_io, const u8 *last) |
| 1661 | { |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1662 | ata_msense_push(ptr_io, last, def_control_mpage, |
| 1663 | sizeof(def_control_mpage)); |
| 1664 | return sizeof(def_control_mpage); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | } |
| 1666 | |
| 1667 | /** |
| 1668 | * ata_msense_rw_recovery - Simulate MODE SENSE r/w error recovery page |
| 1669 | * @dev: Device associated with this MODE SENSE command |
| 1670 | * @ptr_io: (input/output) Location to store more output data |
| 1671 | * @last: End of output data buffer |
| 1672 | * |
| 1673 | * Generate a generic MODE SENSE r/w error recovery page. |
| 1674 | * |
| 1675 | * LOCKING: |
| 1676 | * None. |
| 1677 | */ |
| 1678 | |
| 1679 | static unsigned int ata_msense_rw_recovery(u8 **ptr_io, const u8 *last) |
| 1680 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1681 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1682 | ata_msense_push(ptr_io, last, def_rw_recovery_mpage, |
| 1683 | sizeof(def_rw_recovery_mpage)); |
| 1684 | return sizeof(def_rw_recovery_mpage); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1685 | } |
| 1686 | |
| 1687 | /** |
| 1688 | * ata_scsiop_mode_sense - Simulate MODE SENSE 6, 10 commands |
| 1689 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1690 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 1691 | * @buflen: Response buffer length. |
| 1692 | * |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1693 | * Simulate MODE SENSE commands. Assume this is invoked for direct |
| 1694 | * access devices (e.g. disks) only. There should be no block |
| 1695 | * descriptor for other device types. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1696 | * |
| 1697 | * LOCKING: |
| 1698 | * spin_lock_irqsave(host_set lock) |
| 1699 | */ |
| 1700 | |
| 1701 | unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf, |
| 1702 | unsigned int buflen) |
| 1703 | { |
| 1704 | u8 *scsicmd = args->cmd->cmnd, *p, *last; |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1705 | const u8 sat_blk_desc[] = { |
| 1706 | 0, 0, 0, 0, /* number of blocks: sat unspecified */ |
| 1707 | 0, |
| 1708 | 0, 0x2, 0x0 /* block length: 512 bytes */ |
| 1709 | }; |
| 1710 | u8 pg, spg; |
| 1711 | unsigned int ebd, page_control, six_byte, output_len, alloc_len, minlen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1712 | |
| 1713 | VPRINTK("ENTER\n"); |
| 1714 | |
| 1715 | six_byte = (scsicmd[0] == MODE_SENSE); |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1716 | ebd = !(scsicmd[1] & 0x8); /* dbd bit inverted == edb */ |
| 1717 | /* |
| 1718 | * LLBA bit in msense(10) ignored (compliant) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1719 | */ |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1720 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1721 | page_control = scsicmd[2] >> 6; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1722 | switch (page_control) { |
| 1723 | case 0: /* current */ |
| 1724 | break; /* supported */ |
| 1725 | case 3: /* saved */ |
| 1726 | goto saving_not_supp; |
| 1727 | case 1: /* changeable */ |
| 1728 | case 2: /* defaults */ |
| 1729 | default: |
| 1730 | goto invalid_fld; |
| 1731 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1732 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1733 | if (six_byte) { |
| 1734 | output_len = 4 + (ebd ? 8 : 0); |
| 1735 | alloc_len = scsicmd[4]; |
| 1736 | } else { |
| 1737 | output_len = 8 + (ebd ? 8 : 0); |
| 1738 | alloc_len = (scsicmd[7] << 8) + scsicmd[8]; |
| 1739 | } |
| 1740 | minlen = (alloc_len < buflen) ? alloc_len : buflen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1741 | |
| 1742 | p = rbuf + output_len; |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1743 | last = rbuf + minlen - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1744 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1745 | pg = scsicmd[2] & 0x3f; |
| 1746 | spg = scsicmd[3]; |
| 1747 | /* |
| 1748 | * No mode subpages supported (yet) but asking for _all_ |
| 1749 | * subpages may be valid |
| 1750 | */ |
| 1751 | if (spg && (spg != ALL_SUB_MPAGES)) |
| 1752 | goto invalid_fld; |
| 1753 | |
| 1754 | switch(pg) { |
| 1755 | case RW_RECOVERY_MPAGE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1756 | output_len += ata_msense_rw_recovery(&p, last); |
| 1757 | break; |
| 1758 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1759 | case CACHE_MPAGE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1760 | output_len += ata_msense_caching(args->id, &p, last); |
| 1761 | break; |
| 1762 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1763 | case CONTROL_MPAGE: { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1764 | output_len += ata_msense_ctl_mode(&p, last); |
| 1765 | break; |
| 1766 | } |
| 1767 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1768 | case ALL_MPAGES: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1769 | output_len += ata_msense_rw_recovery(&p, last); |
| 1770 | output_len += ata_msense_caching(args->id, &p, last); |
| 1771 | output_len += ata_msense_ctl_mode(&p, last); |
| 1772 | break; |
| 1773 | |
| 1774 | default: /* invalid page code */ |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1775 | goto invalid_fld; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1776 | } |
| 1777 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1778 | if (minlen < 1) |
| 1779 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1780 | if (six_byte) { |
| 1781 | output_len--; |
| 1782 | rbuf[0] = output_len; |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1783 | if (ebd) { |
| 1784 | if (minlen > 3) |
| 1785 | rbuf[3] = sizeof(sat_blk_desc); |
| 1786 | if (minlen > 11) |
| 1787 | memcpy(rbuf + 4, sat_blk_desc, |
| 1788 | sizeof(sat_blk_desc)); |
| 1789 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1790 | } else { |
| 1791 | output_len -= 2; |
| 1792 | rbuf[0] = output_len >> 8; |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1793 | if (minlen > 1) |
| 1794 | rbuf[1] = output_len; |
| 1795 | if (ebd) { |
| 1796 | if (minlen > 7) |
| 1797 | rbuf[7] = sizeof(sat_blk_desc); |
| 1798 | if (minlen > 15) |
| 1799 | memcpy(rbuf + 8, sat_blk_desc, |
| 1800 | sizeof(sat_blk_desc)); |
| 1801 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1802 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1803 | return 0; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1804 | |
| 1805 | invalid_fld: |
| 1806 | ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x24, 0x0); |
| 1807 | /* "Invalid field in cbd" */ |
| 1808 | return 1; |
| 1809 | |
| 1810 | saving_not_supp: |
| 1811 | ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x39, 0x0); |
| 1812 | /* "Saving parameters not supported" */ |
| 1813 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1814 | } |
| 1815 | |
| 1816 | /** |
| 1817 | * ata_scsiop_read_cap - Simulate READ CAPACITY[ 16] commands |
| 1818 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1819 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 1820 | * @buflen: Response buffer length. |
| 1821 | * |
| 1822 | * Simulate READ CAPACITY commands. |
| 1823 | * |
| 1824 | * LOCKING: |
| 1825 | * spin_lock_irqsave(host_set lock) |
| 1826 | */ |
| 1827 | |
| 1828 | unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf, |
| 1829 | unsigned int buflen) |
| 1830 | { |
| 1831 | u64 n_sectors; |
| 1832 | u32 tmp; |
| 1833 | |
| 1834 | VPRINTK("ENTER\n"); |
| 1835 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1836 | if (ata_id_has_lba(args->id)) { |
| 1837 | if (ata_id_has_lba48(args->id)) |
| 1838 | n_sectors = ata_id_u64(args->id, 100); |
| 1839 | else |
| 1840 | n_sectors = ata_id_u32(args->id, 60); |
| 1841 | } else { |
| 1842 | /* CHS default translation */ |
| 1843 | n_sectors = args->id[1] * args->id[3] * args->id[6]; |
| 1844 | |
| 1845 | if (ata_id_current_chs_valid(args->id)) |
| 1846 | /* CHS current translation */ |
| 1847 | n_sectors = ata_id_u32(args->id, 57); |
| 1848 | } |
| 1849 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1850 | n_sectors--; /* ATA TotalUserSectors - 1 */ |
| 1851 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1852 | if (args->cmd->cmnd[0] == READ_CAPACITY) { |
Philip Pokorny | 0c144d0 | 2005-05-28 01:24:47 -0700 | [diff] [blame] | 1853 | if( n_sectors >= 0xffffffffULL ) |
| 1854 | tmp = 0xffffffff ; /* Return max count on overflow */ |
| 1855 | else |
| 1856 | tmp = n_sectors ; |
| 1857 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1858 | /* sector count, 32-bit */ |
| 1859 | rbuf[0] = tmp >> (8 * 3); |
| 1860 | rbuf[1] = tmp >> (8 * 2); |
| 1861 | rbuf[2] = tmp >> (8 * 1); |
| 1862 | rbuf[3] = tmp; |
| 1863 | |
| 1864 | /* sector size */ |
| 1865 | tmp = ATA_SECT_SIZE; |
| 1866 | rbuf[6] = tmp >> 8; |
| 1867 | rbuf[7] = tmp; |
| 1868 | |
| 1869 | } else { |
| 1870 | /* sector count, 64-bit */ |
Philip Pokorny | 0c144d0 | 2005-05-28 01:24:47 -0700 | [diff] [blame] | 1871 | tmp = n_sectors >> (8 * 4); |
| 1872 | rbuf[2] = tmp >> (8 * 3); |
| 1873 | rbuf[3] = tmp >> (8 * 2); |
| 1874 | rbuf[4] = tmp >> (8 * 1); |
| 1875 | rbuf[5] = tmp; |
| 1876 | tmp = n_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1877 | rbuf[6] = tmp >> (8 * 3); |
| 1878 | rbuf[7] = tmp >> (8 * 2); |
| 1879 | rbuf[8] = tmp >> (8 * 1); |
| 1880 | rbuf[9] = tmp; |
| 1881 | |
| 1882 | /* sector size */ |
| 1883 | tmp = ATA_SECT_SIZE; |
| 1884 | rbuf[12] = tmp >> 8; |
| 1885 | rbuf[13] = tmp; |
| 1886 | } |
| 1887 | |
| 1888 | return 0; |
| 1889 | } |
| 1890 | |
| 1891 | /** |
| 1892 | * ata_scsiop_report_luns - Simulate REPORT LUNS command |
| 1893 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1894 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 1895 | * @buflen: Response buffer length. |
| 1896 | * |
| 1897 | * Simulate REPORT LUNS command. |
| 1898 | * |
| 1899 | * LOCKING: |
| 1900 | * spin_lock_irqsave(host_set lock) |
| 1901 | */ |
| 1902 | |
| 1903 | unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf, |
| 1904 | unsigned int buflen) |
| 1905 | { |
| 1906 | VPRINTK("ENTER\n"); |
| 1907 | rbuf[3] = 8; /* just one lun, LUN 0, size 8 bytes */ |
| 1908 | |
| 1909 | return 0; |
| 1910 | } |
| 1911 | |
| 1912 | /** |
Douglas Gilbert | 845c583 | 2005-10-09 08:55:41 -0400 | [diff] [blame] | 1913 | * ata_scsi_set_sense - Set SCSI sense data and status |
| 1914 | * @cmd: SCSI request to be handled |
| 1915 | * @sk: SCSI-defined sense key |
| 1916 | * @asc: SCSI-defined additional sense code |
| 1917 | * @ascq: SCSI-defined additional sense code qualifier |
| 1918 | * |
| 1919 | * Helper function that builds a valid fixed format, current |
| 1920 | * response code and the given sense key (sk), additional sense |
| 1921 | * code (asc) and additional sense code qualifier (ascq) with |
| 1922 | * a SCSI command status of %SAM_STAT_CHECK_CONDITION and |
| 1923 | * DRIVER_SENSE set in the upper bits of scsi_cmnd::result . |
| 1924 | * |
| 1925 | * LOCKING: |
| 1926 | * Not required |
| 1927 | */ |
| 1928 | |
| 1929 | void ata_scsi_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq) |
| 1930 | { |
| 1931 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
| 1932 | |
| 1933 | cmd->sense_buffer[0] = 0x70; /* fixed format, current */ |
| 1934 | cmd->sense_buffer[2] = sk; |
| 1935 | cmd->sense_buffer[7] = 18 - 8; /* additional sense length */ |
| 1936 | cmd->sense_buffer[12] = asc; |
| 1937 | cmd->sense_buffer[13] = ascq; |
| 1938 | } |
| 1939 | |
| 1940 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1941 | * ata_scsi_badcmd - End a SCSI request with an error |
| 1942 | * @cmd: SCSI request to be handled |
| 1943 | * @done: SCSI command completion function |
| 1944 | * @asc: SCSI-defined additional sense code |
| 1945 | * @ascq: SCSI-defined additional sense code qualifier |
| 1946 | * |
| 1947 | * Helper function that completes a SCSI command with |
| 1948 | * %SAM_STAT_CHECK_CONDITION, with a sense key %ILLEGAL_REQUEST |
| 1949 | * and the specified additional sense codes. |
| 1950 | * |
| 1951 | * LOCKING: |
| 1952 | * spin_lock_irqsave(host_set lock) |
| 1953 | */ |
| 1954 | |
| 1955 | void ata_scsi_badcmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), u8 asc, u8 ascq) |
| 1956 | { |
| 1957 | DPRINTK("ENTER\n"); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1958 | ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, asc, ascq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1959 | |
| 1960 | done(cmd); |
| 1961 | } |
| 1962 | |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 1963 | void atapi_request_sense(struct ata_port *ap, struct ata_device *dev, |
| 1964 | struct scsi_cmnd *cmd) |
| 1965 | { |
| 1966 | DECLARE_COMPLETION(wait); |
| 1967 | struct ata_queued_cmd *qc; |
| 1968 | unsigned long flags; |
| 1969 | int rc; |
| 1970 | |
| 1971 | DPRINTK("ATAPI request sense\n"); |
| 1972 | |
| 1973 | qc = ata_qc_new_init(ap, dev); |
| 1974 | BUG_ON(qc == NULL); |
| 1975 | |
| 1976 | /* FIXME: is this needed? */ |
| 1977 | memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer)); |
| 1978 | |
| 1979 | ata_sg_init_one(qc, cmd->sense_buffer, sizeof(cmd->sense_buffer)); |
| 1980 | qc->dma_dir = DMA_FROM_DEVICE; |
| 1981 | |
| 1982 | memset(&qc->cdb, 0, ap->cdb_len); |
| 1983 | qc->cdb[0] = REQUEST_SENSE; |
| 1984 | qc->cdb[4] = SCSI_SENSE_BUFFERSIZE; |
| 1985 | |
| 1986 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 1987 | qc->tf.command = ATA_CMD_PACKET; |
| 1988 | |
| 1989 | qc->tf.protocol = ATA_PROT_ATAPI; |
| 1990 | qc->tf.lbam = (8 * 1024) & 0xff; |
| 1991 | qc->tf.lbah = (8 * 1024) >> 8; |
| 1992 | qc->nbytes = SCSI_SENSE_BUFFERSIZE; |
| 1993 | |
| 1994 | qc->waiting = &wait; |
| 1995 | qc->complete_fn = ata_qc_complete_noop; |
| 1996 | |
| 1997 | spin_lock_irqsave(&ap->host_set->lock, flags); |
| 1998 | rc = ata_qc_issue(qc); |
| 1999 | spin_unlock_irqrestore(&ap->host_set->lock, flags); |
| 2000 | |
| 2001 | if (rc) |
| 2002 | ata_port_disable(ap); |
| 2003 | else |
| 2004 | wait_for_completion(&wait); |
| 2005 | |
| 2006 | DPRINTK("EXIT\n"); |
| 2007 | } |
| 2008 | |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 2009 | static int atapi_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2010 | { |
| 2011 | struct scsi_cmnd *cmd = qc->scsicmd; |
| 2012 | |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 2013 | VPRINTK("ENTER, err_mask 0x%X\n", err_mask); |
Jeff Garzik | e12669e | 2005-10-05 18:39:23 -0400 | [diff] [blame] | 2014 | |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 2015 | if (unlikely(err_mask & AC_ERR_DEV)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2016 | DPRINTK("request check condition\n"); |
| 2017 | |
Jeff Garzik | a15dbeb | 2005-10-05 15:02:14 -0400 | [diff] [blame] | 2018 | /* FIXME: command completion with check condition |
| 2019 | * but no sense causes the error handler to run, |
| 2020 | * which then issues REQUEST SENSE, fills in the sense |
| 2021 | * buffer, and completes the command (for the second |
| 2022 | * time). We need to issue REQUEST SENSE some other |
| 2023 | * way, to avoid completing the command twice. |
| 2024 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2025 | cmd->result = SAM_STAT_CHECK_CONDITION; |
| 2026 | |
| 2027 | qc->scsidone(cmd); |
| 2028 | |
| 2029 | return 1; |
Jeff Garzik | e12669e | 2005-10-05 18:39:23 -0400 | [diff] [blame] | 2030 | } |
| 2031 | |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 2032 | else if (unlikely(err_mask)) |
| 2033 | /* FIXME: not quite right; we don't want the |
| 2034 | * translation of taskfile registers into |
| 2035 | * a sense descriptors, since that's only |
| 2036 | * correct for ATA, not ATAPI |
| 2037 | */ |
| 2038 | ata_gen_ata_desc_sense(qc); |
| 2039 | |
Jeff Garzik | e12669e | 2005-10-05 18:39:23 -0400 | [diff] [blame] | 2040 | else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2041 | u8 *scsicmd = cmd->cmnd; |
| 2042 | |
| 2043 | if (scsicmd[0] == INQUIRY) { |
| 2044 | u8 *buf = NULL; |
| 2045 | unsigned int buflen; |
| 2046 | |
| 2047 | buflen = ata_scsi_rbuf_get(cmd, &buf); |
Jeff Garzik | a15dbeb | 2005-10-05 15:02:14 -0400 | [diff] [blame] | 2048 | |
| 2049 | /* ATAPI devices typically report zero for their SCSI version, |
| 2050 | * and sometimes deviate from the spec WRT response data |
| 2051 | * format. If SCSI version is reported as zero like normal, |
| 2052 | * then we make the following fixups: 1) Fake MMC-5 version, |
| 2053 | * to indicate to the Linux scsi midlayer this is a modern |
| 2054 | * device. 2) Ensure response data format / ATAPI information |
| 2055 | * are always correct. |
| 2056 | */ |
| 2057 | /* FIXME: do we ever override EVPD pages and the like, with |
| 2058 | * this code? |
| 2059 | */ |
| 2060 | if (buf[2] == 0) { |
| 2061 | buf[2] = 0x5; |
| 2062 | buf[3] = 0x32; |
| 2063 | } |
| 2064 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2065 | ata_scsi_rbuf_put(cmd, buf); |
| 2066 | } |
Jeff Garzik | a15dbeb | 2005-10-05 15:02:14 -0400 | [diff] [blame] | 2067 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2068 | cmd->result = SAM_STAT_GOOD; |
| 2069 | } |
| 2070 | |
| 2071 | qc->scsidone(cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2072 | return 0; |
| 2073 | } |
| 2074 | /** |
| 2075 | * atapi_xlat - Initialize PACKET taskfile |
| 2076 | * @qc: command structure to be initialized |
| 2077 | * @scsicmd: SCSI CDB associated with this PACKET command |
| 2078 | * |
| 2079 | * LOCKING: |
| 2080 | * spin_lock_irqsave(host_set lock) |
| 2081 | * |
| 2082 | * RETURNS: |
| 2083 | * Zero on success, non-zero on failure. |
| 2084 | */ |
| 2085 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 2086 | static unsigned int atapi_xlat(struct ata_queued_cmd *qc, const u8 *scsicmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2087 | { |
| 2088 | struct scsi_cmnd *cmd = qc->scsicmd; |
| 2089 | struct ata_device *dev = qc->dev; |
| 2090 | int using_pio = (dev->flags & ATA_DFLAG_PIO); |
Jeff Garzik | 0274aa2 | 2005-06-22 13:50:56 -0400 | [diff] [blame] | 2091 | int nodata = (cmd->sc_data_direction == DMA_NONE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2092 | |
| 2093 | if (!using_pio) |
| 2094 | /* Check whether ATAPI DMA is safe */ |
| 2095 | if (ata_check_atapi_dma(qc)) |
| 2096 | using_pio = 1; |
| 2097 | |
| 2098 | memcpy(&qc->cdb, scsicmd, qc->ap->cdb_len); |
| 2099 | |
| 2100 | qc->complete_fn = atapi_qc_complete; |
| 2101 | |
| 2102 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
Jeff Garzik | 0274aa2 | 2005-06-22 13:50:56 -0400 | [diff] [blame] | 2103 | if (cmd->sc_data_direction == DMA_TO_DEVICE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2104 | qc->tf.flags |= ATA_TFLAG_WRITE; |
| 2105 | DPRINTK("direction: write\n"); |
| 2106 | } |
| 2107 | |
| 2108 | qc->tf.command = ATA_CMD_PACKET; |
| 2109 | |
| 2110 | /* no data, or PIO data xfer */ |
| 2111 | if (using_pio || nodata) { |
| 2112 | if (nodata) |
| 2113 | qc->tf.protocol = ATA_PROT_ATAPI_NODATA; |
| 2114 | else |
| 2115 | qc->tf.protocol = ATA_PROT_ATAPI; |
| 2116 | qc->tf.lbam = (8 * 1024) & 0xff; |
| 2117 | qc->tf.lbah = (8 * 1024) >> 8; |
| 2118 | } |
| 2119 | |
| 2120 | /* DMA data xfer */ |
| 2121 | else { |
| 2122 | qc->tf.protocol = ATA_PROT_ATAPI_DMA; |
| 2123 | qc->tf.feature |= ATAPI_PKT_DMA; |
| 2124 | |
| 2125 | #ifdef ATAPI_ENABLE_DMADIR |
| 2126 | /* some SATA bridges need us to indicate data xfer direction */ |
Jeff Garzik | 0274aa2 | 2005-06-22 13:50:56 -0400 | [diff] [blame] | 2127 | if (cmd->sc_data_direction != DMA_TO_DEVICE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2128 | qc->tf.feature |= ATAPI_DMADIR; |
| 2129 | #endif |
| 2130 | } |
| 2131 | |
| 2132 | qc->nbytes = cmd->bufflen; |
| 2133 | |
| 2134 | return 0; |
| 2135 | } |
| 2136 | |
| 2137 | /** |
| 2138 | * ata_scsi_find_dev - lookup ata_device from scsi_cmnd |
| 2139 | * @ap: ATA port to which the device is attached |
| 2140 | * @scsidev: SCSI device from which we derive the ATA device |
| 2141 | * |
| 2142 | * Given various information provided in struct scsi_cmnd, |
| 2143 | * map that onto an ATA bus, and using that mapping |
| 2144 | * determine which ata_device is associated with the |
| 2145 | * SCSI command to be sent. |
| 2146 | * |
| 2147 | * LOCKING: |
| 2148 | * spin_lock_irqsave(host_set lock) |
| 2149 | * |
| 2150 | * RETURNS: |
| 2151 | * Associated ATA device, or %NULL if not found. |
| 2152 | */ |
| 2153 | |
| 2154 | static struct ata_device * |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 2155 | 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] | 2156 | { |
| 2157 | struct ata_device *dev; |
| 2158 | |
| 2159 | /* skip commands not addressed to targets we simulate */ |
| 2160 | if (likely(scsidev->id < ATA_MAX_DEVICES)) |
| 2161 | dev = &ap->device[scsidev->id]; |
| 2162 | else |
| 2163 | return NULL; |
| 2164 | |
| 2165 | if (unlikely((scsidev->channel != 0) || |
| 2166 | (scsidev->lun != 0))) |
| 2167 | return NULL; |
| 2168 | |
| 2169 | if (unlikely(!ata_dev_present(dev))) |
| 2170 | return NULL; |
| 2171 | |
Jeff Garzik | 6f10623 | 2005-08-30 21:52:18 -0400 | [diff] [blame] | 2172 | if (!atapi_enabled) { |
Jeff Garzik | 1623c81 | 2005-08-30 03:37:42 -0400 | [diff] [blame] | 2173 | if (unlikely(dev->class == ATA_DEV_ATAPI)) |
| 2174 | return NULL; |
| 2175 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2176 | |
| 2177 | return dev; |
| 2178 | } |
| 2179 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2180 | /* |
| 2181 | * ata_scsi_map_proto - Map pass-thru protocol value to taskfile value. |
| 2182 | * @byte1: Byte 1 from pass-thru CDB. |
| 2183 | * |
| 2184 | * RETURNS: |
| 2185 | * ATA_PROT_UNKNOWN if mapping failed/unimplemented, protocol otherwise. |
| 2186 | */ |
| 2187 | static u8 |
| 2188 | ata_scsi_map_proto(u8 byte1) |
| 2189 | { |
| 2190 | switch((byte1 & 0x1e) >> 1) { |
| 2191 | case 3: /* Non-data */ |
| 2192 | return ATA_PROT_NODATA; |
| 2193 | |
| 2194 | case 6: /* DMA */ |
| 2195 | return ATA_PROT_DMA; |
| 2196 | |
| 2197 | case 4: /* PIO Data-in */ |
| 2198 | case 5: /* PIO Data-out */ |
| 2199 | if (byte1 & 0xe0) { |
| 2200 | return ATA_PROT_PIO_MULT; |
| 2201 | } |
| 2202 | return ATA_PROT_PIO; |
| 2203 | |
| 2204 | case 10: /* Device Reset */ |
| 2205 | case 0: /* Hard Reset */ |
| 2206 | case 1: /* SRST */ |
| 2207 | case 2: /* Bus Idle */ |
| 2208 | case 7: /* Packet */ |
| 2209 | case 8: /* DMA Queued */ |
| 2210 | case 9: /* Device Diagnostic */ |
| 2211 | case 11: /* UDMA Data-in */ |
| 2212 | case 12: /* UDMA Data-Out */ |
| 2213 | case 13: /* FPDMA */ |
| 2214 | default: /* Reserved */ |
| 2215 | break; |
| 2216 | } |
| 2217 | |
| 2218 | return ATA_PROT_UNKNOWN; |
| 2219 | } |
| 2220 | |
| 2221 | /** |
| 2222 | * ata_scsi_pass_thru - convert ATA pass-thru CDB to taskfile |
| 2223 | * @qc: command structure to be initialized |
| 2224 | * @cmd: SCSI command to convert |
| 2225 | * |
| 2226 | * Handles either 12 or 16-byte versions of the CDB. |
| 2227 | * |
| 2228 | * RETURNS: |
| 2229 | * Zero on success, non-zero on failure. |
| 2230 | */ |
| 2231 | static unsigned int |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2232 | ata_scsi_pass_thru(struct ata_queued_cmd *qc, const u8 *scsicmd) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2233 | { |
| 2234 | struct ata_taskfile *tf = &(qc->tf); |
| 2235 | struct scsi_cmnd *cmd = qc->scsicmd; |
| 2236 | |
| 2237 | if ((tf->protocol = ata_scsi_map_proto(scsicmd[1])) == ATA_PROT_UNKNOWN) |
| 2238 | return 1; |
| 2239 | |
| 2240 | /* |
| 2241 | * 12 and 16 byte CDBs use different offsets to |
| 2242 | * provide the various register values. |
| 2243 | */ |
| 2244 | if (scsicmd[0] == ATA_16) { |
| 2245 | /* |
| 2246 | * 16-byte CDB - may contain extended commands. |
| 2247 | * |
| 2248 | * If that is the case, copy the upper byte register values. |
| 2249 | */ |
| 2250 | if (scsicmd[1] & 0x01) { |
| 2251 | tf->hob_feature = scsicmd[3]; |
| 2252 | tf->hob_nsect = scsicmd[5]; |
| 2253 | tf->hob_lbal = scsicmd[7]; |
| 2254 | tf->hob_lbam = scsicmd[9]; |
| 2255 | tf->hob_lbah = scsicmd[11]; |
| 2256 | tf->flags |= ATA_TFLAG_LBA48; |
| 2257 | } else |
| 2258 | tf->flags &= ~ATA_TFLAG_LBA48; |
| 2259 | |
| 2260 | /* |
| 2261 | * Always copy low byte, device and command registers. |
| 2262 | */ |
| 2263 | tf->feature = scsicmd[4]; |
| 2264 | tf->nsect = scsicmd[6]; |
| 2265 | tf->lbal = scsicmd[8]; |
| 2266 | tf->lbam = scsicmd[10]; |
| 2267 | tf->lbah = scsicmd[12]; |
| 2268 | tf->device = scsicmd[13]; |
| 2269 | tf->command = scsicmd[14]; |
| 2270 | } else { |
| 2271 | /* |
| 2272 | * 12-byte CDB - incapable of extended commands. |
| 2273 | */ |
| 2274 | tf->flags &= ~ATA_TFLAG_LBA48; |
| 2275 | |
| 2276 | tf->feature = scsicmd[3]; |
| 2277 | tf->nsect = scsicmd[4]; |
| 2278 | tf->lbal = scsicmd[5]; |
| 2279 | tf->lbam = scsicmd[6]; |
| 2280 | tf->lbah = scsicmd[7]; |
| 2281 | tf->device = scsicmd[8]; |
| 2282 | tf->command = scsicmd[9]; |
| 2283 | } |
| 2284 | |
| 2285 | /* |
| 2286 | * Filter SET_FEATURES - XFER MODE command -- otherwise, |
| 2287 | * SET_FEATURES - XFER MODE must be preceded/succeeded |
| 2288 | * by an update to hardware-specific registers for each |
| 2289 | * controller (i.e. the reason for ->set_piomode(), |
| 2290 | * ->set_dmamode(), and ->post_set_mode() hooks). |
| 2291 | */ |
| 2292 | if ((tf->command == ATA_CMD_SET_FEATURES) |
| 2293 | && (tf->feature == SETFEATURES_XFER)) |
| 2294 | return 1; |
| 2295 | |
| 2296 | /* |
| 2297 | * Set flags so that all registers will be written, |
| 2298 | * and pass on write indication (used for PIO/DMA |
| 2299 | * setup.) |
| 2300 | */ |
| 2301 | tf->flags |= (ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE); |
| 2302 | |
Jeff Garzik | 0274aa2 | 2005-06-22 13:50:56 -0400 | [diff] [blame] | 2303 | if (cmd->sc_data_direction == DMA_TO_DEVICE) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2304 | tf->flags |= ATA_TFLAG_WRITE; |
| 2305 | |
| 2306 | /* |
| 2307 | * Set transfer length. |
| 2308 | * |
| 2309 | * TODO: find out if we need to do more here to |
| 2310 | * cover scatter/gather case. |
| 2311 | */ |
| 2312 | qc->nsect = cmd->bufflen / ATA_SECT_SIZE; |
| 2313 | |
| 2314 | return 0; |
| 2315 | } |
| 2316 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2317 | /** |
| 2318 | * ata_get_xlat_func - check if SCSI to ATA translation is possible |
| 2319 | * @dev: ATA device |
| 2320 | * @cmd: SCSI command opcode to consider |
| 2321 | * |
| 2322 | * Look up the SCSI command given, and determine whether the |
| 2323 | * SCSI command is to be translated or simulated. |
| 2324 | * |
| 2325 | * RETURNS: |
| 2326 | * Pointer to translation function if possible, %NULL if not. |
| 2327 | */ |
| 2328 | |
| 2329 | static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd) |
| 2330 | { |
| 2331 | switch (cmd) { |
| 2332 | case READ_6: |
| 2333 | case READ_10: |
| 2334 | case READ_16: |
| 2335 | |
| 2336 | case WRITE_6: |
| 2337 | case WRITE_10: |
| 2338 | case WRITE_16: |
| 2339 | return ata_scsi_rw_xlat; |
| 2340 | |
| 2341 | case SYNCHRONIZE_CACHE: |
| 2342 | if (ata_try_flush_cache(dev)) |
| 2343 | return ata_scsi_flush_xlat; |
| 2344 | break; |
| 2345 | |
| 2346 | case VERIFY: |
| 2347 | case VERIFY_16: |
| 2348 | return ata_scsi_verify_xlat; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2349 | |
| 2350 | case ATA_12: |
| 2351 | case ATA_16: |
| 2352 | return ata_scsi_pass_thru; |
Jeff Garzik | da61396 | 2005-08-29 19:01:43 -0400 | [diff] [blame] | 2353 | |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 2354 | case START_STOP: |
| 2355 | return ata_scsi_start_stop_xlat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2356 | } |
| 2357 | |
| 2358 | return NULL; |
| 2359 | } |
| 2360 | |
| 2361 | /** |
| 2362 | * ata_scsi_dump_cdb - dump SCSI command contents to dmesg |
| 2363 | * @ap: ATA port to which the command was being sent |
| 2364 | * @cmd: SCSI command to dump |
| 2365 | * |
| 2366 | * Prints the contents of a SCSI command via printk(). |
| 2367 | */ |
| 2368 | |
| 2369 | static inline void ata_scsi_dump_cdb(struct ata_port *ap, |
| 2370 | struct scsi_cmnd *cmd) |
| 2371 | { |
| 2372 | #ifdef ATA_DEBUG |
| 2373 | struct scsi_device *scsidev = cmd->device; |
| 2374 | u8 *scsicmd = cmd->cmnd; |
| 2375 | |
| 2376 | DPRINTK("CDB (%u:%d,%d,%d) %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", |
| 2377 | ap->id, |
| 2378 | scsidev->channel, scsidev->id, scsidev->lun, |
| 2379 | scsicmd[0], scsicmd[1], scsicmd[2], scsicmd[3], |
| 2380 | scsicmd[4], scsicmd[5], scsicmd[6], scsicmd[7], |
| 2381 | scsicmd[8]); |
| 2382 | #endif |
| 2383 | } |
| 2384 | |
| 2385 | /** |
| 2386 | * ata_scsi_queuecmd - Issue SCSI cdb to libata-managed device |
| 2387 | * @cmd: SCSI command to be sent |
| 2388 | * @done: Completion function, called when command is complete |
| 2389 | * |
| 2390 | * In some cases, this function translates SCSI commands into |
| 2391 | * ATA taskfiles, and queues the taskfiles to be sent to |
| 2392 | * hardware. In other cases, this function simulates a |
| 2393 | * SCSI device by evaluating and responding to certain |
| 2394 | * SCSI commands. This creates the overall effect of |
| 2395 | * ATA and ATAPI devices appearing as SCSI devices. |
| 2396 | * |
| 2397 | * LOCKING: |
| 2398 | * Releases scsi-layer-held lock, and obtains host_set lock. |
| 2399 | * |
| 2400 | * RETURNS: |
| 2401 | * Zero. |
| 2402 | */ |
| 2403 | |
| 2404 | int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)) |
| 2405 | { |
| 2406 | struct ata_port *ap; |
| 2407 | struct ata_device *dev; |
| 2408 | struct scsi_device *scsidev = cmd->device; |
Jeff Garzik | 005a5a0 | 2005-10-30 23:31:48 -0500 | [diff] [blame^] | 2409 | struct Scsi_Host *shost = scsidev->host; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2410 | |
Jeff Garzik | 005a5a0 | 2005-10-30 23:31:48 -0500 | [diff] [blame^] | 2411 | ap = (struct ata_port *) &shost->hostdata[0]; |
| 2412 | |
| 2413 | spin_unlock(shost->host_lock); |
| 2414 | spin_lock(&ap->host_set->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2415 | |
| 2416 | ata_scsi_dump_cdb(ap, cmd); |
| 2417 | |
| 2418 | dev = ata_scsi_find_dev(ap, scsidev); |
| 2419 | if (unlikely(!dev)) { |
| 2420 | cmd->result = (DID_BAD_TARGET << 16); |
| 2421 | done(cmd); |
| 2422 | goto out_unlock; |
| 2423 | } |
| 2424 | |
| 2425 | if (dev->class == ATA_DEV_ATA) { |
| 2426 | ata_xlat_func_t xlat_func = ata_get_xlat_func(dev, |
| 2427 | cmd->cmnd[0]); |
| 2428 | |
| 2429 | if (xlat_func) |
| 2430 | ata_scsi_translate(ap, dev, cmd, done, xlat_func); |
| 2431 | else |
| 2432 | ata_scsi_simulate(dev->id, cmd, done); |
| 2433 | } else |
| 2434 | ata_scsi_translate(ap, dev, cmd, done, atapi_xlat); |
| 2435 | |
| 2436 | out_unlock: |
Jeff Garzik | 005a5a0 | 2005-10-30 23:31:48 -0500 | [diff] [blame^] | 2437 | spin_unlock(&ap->host_set->lock); |
| 2438 | spin_lock(shost->host_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2439 | return 0; |
| 2440 | } |
| 2441 | |
| 2442 | /** |
| 2443 | * ata_scsi_simulate - simulate SCSI command on ATA device |
| 2444 | * @id: current IDENTIFY data for target device. |
| 2445 | * @cmd: SCSI command being sent to device. |
| 2446 | * @done: SCSI command completion function. |
| 2447 | * |
| 2448 | * Interprets and directly executes a select list of SCSI commands |
| 2449 | * that can be handled internally. |
| 2450 | * |
| 2451 | * LOCKING: |
| 2452 | * spin_lock_irqsave(host_set lock) |
| 2453 | */ |
| 2454 | |
| 2455 | void ata_scsi_simulate(u16 *id, |
| 2456 | struct scsi_cmnd *cmd, |
| 2457 | void (*done)(struct scsi_cmnd *)) |
| 2458 | { |
| 2459 | struct ata_scsi_args args; |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 2460 | const u8 *scsicmd = cmd->cmnd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2461 | |
| 2462 | args.id = id; |
| 2463 | args.cmd = cmd; |
| 2464 | args.done = done; |
| 2465 | |
| 2466 | switch(scsicmd[0]) { |
| 2467 | /* no-op's, complete with success */ |
| 2468 | case SYNCHRONIZE_CACHE: |
| 2469 | case REZERO_UNIT: |
| 2470 | case SEEK_6: |
| 2471 | case SEEK_10: |
| 2472 | case TEST_UNIT_READY: |
| 2473 | case FORMAT_UNIT: /* FIXME: correct? */ |
| 2474 | case SEND_DIAGNOSTIC: /* FIXME: correct? */ |
| 2475 | ata_scsi_rbuf_fill(&args, ata_scsiop_noop); |
| 2476 | break; |
| 2477 | |
| 2478 | case INQUIRY: |
| 2479 | if (scsicmd[1] & 2) /* is CmdDt set? */ |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2480 | ata_scsi_invalid_field(cmd, done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2481 | else if ((scsicmd[1] & 1) == 0) /* is EVPD clear? */ |
| 2482 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_std); |
| 2483 | else if (scsicmd[2] == 0x00) |
| 2484 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_00); |
| 2485 | else if (scsicmd[2] == 0x80) |
| 2486 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_80); |
| 2487 | else if (scsicmd[2] == 0x83) |
| 2488 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_83); |
| 2489 | else |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2490 | ata_scsi_invalid_field(cmd, done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2491 | break; |
| 2492 | |
| 2493 | case MODE_SENSE: |
| 2494 | case MODE_SENSE_10: |
| 2495 | ata_scsi_rbuf_fill(&args, ata_scsiop_mode_sense); |
| 2496 | break; |
| 2497 | |
| 2498 | case MODE_SELECT: /* unconditionally return */ |
| 2499 | case MODE_SELECT_10: /* bad-field-in-cdb */ |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2500 | ata_scsi_invalid_field(cmd, done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2501 | break; |
| 2502 | |
| 2503 | case READ_CAPACITY: |
| 2504 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); |
| 2505 | break; |
| 2506 | |
| 2507 | case SERVICE_ACTION_IN: |
| 2508 | if ((scsicmd[1] & 0x1f) == SAI_READ_CAPACITY_16) |
| 2509 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); |
| 2510 | else |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2511 | ata_scsi_invalid_field(cmd, done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2512 | break; |
| 2513 | |
| 2514 | case REPORT_LUNS: |
| 2515 | ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns); |
| 2516 | break; |
| 2517 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2518 | /* mandatory commands we haven't implemented yet */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2519 | case REQUEST_SENSE: |
| 2520 | |
| 2521 | /* all other commands */ |
| 2522 | default: |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2523 | ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x20, 0x0); |
| 2524 | /* "Invalid command operation code" */ |
| 2525 | done(cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2526 | break; |
| 2527 | } |
| 2528 | } |
| 2529 | |
Jeff Garzik | 644dd0c | 2005-10-03 15:55:19 -0400 | [diff] [blame] | 2530 | void ata_scsi_scan_host(struct ata_port *ap) |
| 2531 | { |
Jeff Garzik | 3f19ee8 | 2005-10-03 21:36:41 -0400 | [diff] [blame] | 2532 | struct ata_device *dev; |
Jeff Garzik | 644dd0c | 2005-10-03 15:55:19 -0400 | [diff] [blame] | 2533 | unsigned int i; |
| 2534 | |
| 2535 | if (ap->flags & ATA_FLAG_PORT_DISABLED) |
| 2536 | return; |
| 2537 | |
Jeff Garzik | 3f19ee8 | 2005-10-03 21:36:41 -0400 | [diff] [blame] | 2538 | for (i = 0; i < ATA_MAX_DEVICES; i++) { |
| 2539 | dev = &ap->device[i]; |
| 2540 | |
| 2541 | if (ata_dev_present(dev)) |
| 2542 | scsi_scan_target(&ap->host->shost_gendev, 0, i, 0, 0); |
| 2543 | } |
Jeff Garzik | 644dd0c | 2005-10-03 15:55:19 -0400 | [diff] [blame] | 2544 | } |
| 2545 | |