Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Jeff Garzik | af36d7f | 2005-08-28 20:18:39 -0400 | [diff] [blame] | 2 | * libata-scsi.c - helper library for ATA |
| 3 | * |
| 4 | * Maintained by: Jeff Garzik <jgarzik@pobox.com> |
| 5 | * Please ALWAYS copy linux-ide@vger.kernel.org |
| 6 | * on emails. |
| 7 | * |
| 8 | * Copyright 2003-2004 Red Hat, Inc. All rights reserved. |
| 9 | * Copyright 2003-2004 Jeff Garzik |
| 10 | * |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of the GNU General Public License as published by |
| 14 | * the Free Software Foundation; either version 2, or (at your option) |
| 15 | * any later version. |
| 16 | * |
| 17 | * This program is distributed in the hope that it will be useful, |
| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | * GNU General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License |
| 23 | * along with this program; see the file COPYING. If not, write to |
| 24 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
| 25 | * |
| 26 | * |
| 27 | * libata documentation is available via 'make {ps|pdf}docs', |
| 28 | * as Documentation/DocBook/libata.* |
| 29 | * |
| 30 | * Hardware documentation available from |
| 31 | * - http://www.t10.org/ |
| 32 | * - http://www.t13.org/ |
| 33 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | */ |
| 35 | |
| 36 | #include <linux/kernel.h> |
| 37 | #include <linux/blkdev.h> |
| 38 | #include <linux/spinlock.h> |
| 39 | #include <scsi/scsi.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include <scsi/scsi_host.h> |
Mike Christie | 85837eb | 2005-11-11 16:38:53 -0600 | [diff] [blame] | 41 | #include <scsi/scsi_eh.h> |
Jeff Garzik | 005a5a0 | 2005-10-30 23:31:48 -0500 | [diff] [blame] | 42 | #include <scsi/scsi_device.h> |
Jeff Garzik | 193515d | 2005-11-07 00:59:37 -0500 | [diff] [blame] | 43 | #include <scsi/scsi_request.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <linux/libata.h> |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 45 | #include <linux/hdreg.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #include <asm/uaccess.h> |
| 47 | |
| 48 | #include "libata.h" |
| 49 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 50 | #define SECTOR_SIZE 512 |
| 51 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 52 | 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] | 53 | static struct ata_device * |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 54 | 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] | 55 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 56 | #define RW_RECOVERY_MPAGE 0x1 |
| 57 | #define RW_RECOVERY_MPAGE_LEN 12 |
| 58 | #define CACHE_MPAGE 0x8 |
| 59 | #define CACHE_MPAGE_LEN 20 |
| 60 | #define CONTROL_MPAGE 0xa |
| 61 | #define CONTROL_MPAGE_LEN 12 |
| 62 | #define ALL_MPAGES 0x3f |
| 63 | #define ALL_SUB_MPAGES 0xff |
| 64 | |
| 65 | |
| 66 | static const u8 def_rw_recovery_mpage[] = { |
| 67 | RW_RECOVERY_MPAGE, |
| 68 | RW_RECOVERY_MPAGE_LEN - 2, |
| 69 | (1 << 7) | /* AWRE, sat-r06 say it shall be 0 */ |
| 70 | (1 << 6), /* ARRE (auto read reallocation) */ |
| 71 | 0, /* read retry count */ |
| 72 | 0, 0, 0, 0, |
| 73 | 0, /* write retry count */ |
| 74 | 0, 0, 0 |
| 75 | }; |
| 76 | |
| 77 | static const u8 def_cache_mpage[CACHE_MPAGE_LEN] = { |
| 78 | CACHE_MPAGE, |
| 79 | CACHE_MPAGE_LEN - 2, |
| 80 | 0, /* contains WCE, needs to be 0 for logic */ |
| 81 | 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 82 | 0, /* contains DRA, needs to be 0 for logic */ |
| 83 | 0, 0, 0, 0, 0, 0, 0 |
| 84 | }; |
| 85 | |
| 86 | static const u8 def_control_mpage[CONTROL_MPAGE_LEN] = { |
| 87 | CONTROL_MPAGE, |
| 88 | CONTROL_MPAGE_LEN - 2, |
| 89 | 2, /* DSENSE=0, GLTSD=1 */ |
| 90 | 0, /* [QAM+QERR may be 1, see 05-359r1] */ |
| 91 | 0, 0, 0, 0, 0xff, 0xff, |
| 92 | 0, 30 /* extended self test time, see 05-359r1 */ |
| 93 | }; |
| 94 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 96 | static void ata_scsi_invalid_field(struct scsi_cmnd *cmd, |
| 97 | void (*done)(struct scsi_cmnd *)) |
| 98 | { |
| 99 | ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x24, 0x0); |
| 100 | /* "Invalid field in cbd" */ |
| 101 | done(cmd); |
| 102 | } |
| 103 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | /** |
| 105 | * ata_std_bios_param - generic bios head/sector/cylinder calculator used by sd. |
| 106 | * @sdev: SCSI device for which BIOS geometry is to be determined |
| 107 | * @bdev: block device associated with @sdev |
| 108 | * @capacity: capacity of SCSI device |
| 109 | * @geom: location to which geometry will be output |
| 110 | * |
| 111 | * Generic bios head/sector/cylinder calculator |
| 112 | * used by sd. Most BIOSes nowadays expect a XXX/255/16 (CHS) |
| 113 | * mapping. Some situations may arise where the disk is not |
| 114 | * bootable if this is not used. |
| 115 | * |
| 116 | * LOCKING: |
| 117 | * Defined by the SCSI layer. We don't really care. |
| 118 | * |
| 119 | * RETURNS: |
| 120 | * Zero. |
| 121 | */ |
| 122 | int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev, |
| 123 | sector_t capacity, int geom[]) |
| 124 | { |
| 125 | geom[0] = 255; |
| 126 | geom[1] = 63; |
| 127 | sector_div(capacity, 255*63); |
| 128 | geom[2] = capacity; |
| 129 | |
| 130 | return 0; |
| 131 | } |
| 132 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 133 | /** |
| 134 | * ata_cmd_ioctl - Handler for HDIO_DRIVE_CMD ioctl |
Randy Dunlap | 8e8b77d | 2005-11-01 21:29:27 -0800 | [diff] [blame] | 135 | * @scsidev: Device to which we are issuing command |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 136 | * @arg: User provided data for issuing command |
| 137 | * |
| 138 | * LOCKING: |
| 139 | * Defined by the SCSI layer. We don't really care. |
| 140 | * |
| 141 | * RETURNS: |
| 142 | * Zero on success, negative errno on error. |
| 143 | */ |
| 144 | |
| 145 | int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg) |
| 146 | { |
| 147 | int rc = 0; |
| 148 | u8 scsi_cmd[MAX_COMMAND_SIZE]; |
| 149 | u8 args[4], *argbuf = NULL; |
| 150 | int argsize = 0; |
Mike Christie | 85837eb | 2005-11-11 16:38:53 -0600 | [diff] [blame] | 151 | struct scsi_sense_hdr sshdr; |
| 152 | enum dma_data_direction data_dir; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 153 | |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 154 | if (arg == NULL) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 155 | return -EINVAL; |
| 156 | |
| 157 | if (copy_from_user(args, arg, sizeof(args))) |
| 158 | return -EFAULT; |
| 159 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 160 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
| 161 | |
| 162 | if (args[3]) { |
| 163 | argsize = SECTOR_SIZE * args[3]; |
| 164 | argbuf = kmalloc(argsize, GFP_KERNEL); |
Jeff Raubitschek | 54dac83 | 2005-10-04 10:21:19 -0400 | [diff] [blame] | 165 | if (argbuf == NULL) { |
| 166 | rc = -ENOMEM; |
| 167 | goto error; |
| 168 | } |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 169 | |
| 170 | scsi_cmd[1] = (4 << 1); /* PIO Data-in */ |
| 171 | scsi_cmd[2] = 0x0e; /* no off.line or cc, read from dev, |
| 172 | block count in sector count field */ |
Mike Christie | 85837eb | 2005-11-11 16:38:53 -0600 | [diff] [blame] | 173 | data_dir = DMA_FROM_DEVICE; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 174 | } else { |
| 175 | scsi_cmd[1] = (3 << 1); /* Non-data */ |
| 176 | /* scsi_cmd[2] is already 0 -- no off.line, cc, or data xfer */ |
Mike Christie | 85837eb | 2005-11-11 16:38:53 -0600 | [diff] [blame] | 177 | data_dir = DMA_NONE; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 178 | } |
| 179 | |
| 180 | scsi_cmd[0] = ATA_16; |
| 181 | |
| 182 | scsi_cmd[4] = args[2]; |
| 183 | if (args[0] == WIN_SMART) { /* hack -- ide driver does this too... */ |
| 184 | scsi_cmd[6] = args[3]; |
| 185 | scsi_cmd[8] = args[1]; |
| 186 | scsi_cmd[10] = 0x4f; |
| 187 | scsi_cmd[12] = 0xc2; |
| 188 | } else { |
| 189 | scsi_cmd[6] = args[1]; |
| 190 | } |
| 191 | scsi_cmd[14] = args[0]; |
| 192 | |
| 193 | /* Good values for timeout and retries? Values below |
| 194 | from scsi_ioctl_send_command() for default case... */ |
Mike Christie | 85837eb | 2005-11-11 16:38:53 -0600 | [diff] [blame] | 195 | if (scsi_execute_req(scsidev, scsi_cmd, data_dir, argbuf, argsize, |
| 196 | &sshdr, (10*HZ), 5)) { |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 197 | rc = -EIO; |
| 198 | goto error; |
| 199 | } |
| 200 | |
| 201 | /* Need code to retrieve data from check condition? */ |
| 202 | |
| 203 | if ((argbuf) |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 204 | && copy_to_user(arg + sizeof(args), argbuf, argsize)) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 205 | rc = -EFAULT; |
| 206 | error: |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 207 | if (argbuf) |
| 208 | kfree(argbuf); |
| 209 | |
| 210 | return rc; |
| 211 | } |
| 212 | |
| 213 | /** |
| 214 | * ata_task_ioctl - Handler for HDIO_DRIVE_TASK ioctl |
Randy Dunlap | 8e8b77d | 2005-11-01 21:29:27 -0800 | [diff] [blame] | 215 | * @scsidev: Device to which we are issuing command |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 216 | * @arg: User provided data for issuing command |
| 217 | * |
| 218 | * LOCKING: |
| 219 | * Defined by the SCSI layer. We don't really care. |
| 220 | * |
| 221 | * RETURNS: |
| 222 | * Zero on success, negative errno on error. |
| 223 | */ |
| 224 | int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg) |
| 225 | { |
| 226 | int rc = 0; |
| 227 | u8 scsi_cmd[MAX_COMMAND_SIZE]; |
| 228 | u8 args[7]; |
Mike Christie | 85837eb | 2005-11-11 16:38:53 -0600 | [diff] [blame] | 229 | struct scsi_sense_hdr sshdr; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 230 | |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 231 | if (arg == NULL) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 232 | return -EINVAL; |
| 233 | |
| 234 | if (copy_from_user(args, arg, sizeof(args))) |
| 235 | return -EFAULT; |
| 236 | |
| 237 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
| 238 | scsi_cmd[0] = ATA_16; |
| 239 | scsi_cmd[1] = (3 << 1); /* Non-data */ |
| 240 | /* scsi_cmd[2] is already 0 -- no off.line, cc, or data xfer */ |
| 241 | scsi_cmd[4] = args[1]; |
| 242 | scsi_cmd[6] = args[2]; |
| 243 | scsi_cmd[8] = args[3]; |
| 244 | scsi_cmd[10] = args[4]; |
| 245 | scsi_cmd[12] = args[5]; |
| 246 | scsi_cmd[14] = args[0]; |
| 247 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 248 | /* Good values for timeout and retries? Values below |
Mike Christie | 85837eb | 2005-11-11 16:38:53 -0600 | [diff] [blame] | 249 | from scsi_ioctl_send_command() for default case... */ |
| 250 | if (scsi_execute_req(scsidev, scsi_cmd, DMA_NONE, NULL, 0, &sshdr, |
| 251 | (10*HZ), 5)) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 252 | rc = -EIO; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 253 | |
| 254 | /* Need code to retrieve data from check condition? */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 255 | return rc; |
| 256 | } |
| 257 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | int ata_scsi_ioctl(struct scsi_device *scsidev, int cmd, void __user *arg) |
| 259 | { |
| 260 | struct ata_port *ap; |
| 261 | struct ata_device *dev; |
| 262 | int val = -EINVAL, rc = -EINVAL; |
| 263 | |
| 264 | ap = (struct ata_port *) &scsidev->host->hostdata[0]; |
| 265 | if (!ap) |
| 266 | goto out; |
| 267 | |
| 268 | dev = ata_scsi_find_dev(ap, scsidev); |
| 269 | if (!dev) { |
| 270 | rc = -ENODEV; |
| 271 | goto out; |
| 272 | } |
| 273 | |
| 274 | switch (cmd) { |
| 275 | case ATA_IOC_GET_IO32: |
| 276 | val = 0; |
| 277 | if (copy_to_user(arg, &val, 1)) |
| 278 | return -EFAULT; |
| 279 | return 0; |
| 280 | |
| 281 | case ATA_IOC_SET_IO32: |
| 282 | val = (unsigned long) arg; |
| 283 | if (val != 0) |
| 284 | return -EINVAL; |
| 285 | return 0; |
| 286 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 287 | case HDIO_DRIVE_CMD: |
| 288 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
| 289 | return -EACCES; |
| 290 | return ata_cmd_ioctl(scsidev, arg); |
| 291 | |
| 292 | case HDIO_DRIVE_TASK: |
| 293 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
| 294 | return -EACCES; |
| 295 | return ata_task_ioctl(scsidev, arg); |
| 296 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | default: |
| 298 | rc = -ENOTTY; |
| 299 | break; |
| 300 | } |
| 301 | |
| 302 | out: |
| 303 | return rc; |
| 304 | } |
| 305 | |
| 306 | /** |
| 307 | * ata_scsi_qc_new - acquire new ata_queued_cmd reference |
| 308 | * @ap: ATA port to which the new command is attached |
| 309 | * @dev: ATA device to which the new command is attached |
| 310 | * @cmd: SCSI command that originated this ATA command |
| 311 | * @done: SCSI command completion function |
| 312 | * |
| 313 | * Obtain a reference to an unused ata_queued_cmd structure, |
| 314 | * which is the basic libata structure representing a single |
| 315 | * ATA command sent to the hardware. |
| 316 | * |
| 317 | * If a command was available, fill in the SCSI-specific |
| 318 | * portions of the structure with information on the |
| 319 | * current command. |
| 320 | * |
| 321 | * LOCKING: |
| 322 | * spin_lock_irqsave(host_set lock) |
| 323 | * |
| 324 | * RETURNS: |
| 325 | * Command allocated, or %NULL if none available. |
| 326 | */ |
| 327 | struct ata_queued_cmd *ata_scsi_qc_new(struct ata_port *ap, |
| 328 | struct ata_device *dev, |
| 329 | struct scsi_cmnd *cmd, |
| 330 | void (*done)(struct scsi_cmnd *)) |
| 331 | { |
| 332 | struct ata_queued_cmd *qc; |
| 333 | |
| 334 | qc = ata_qc_new_init(ap, dev); |
| 335 | if (qc) { |
| 336 | qc->scsicmd = cmd; |
| 337 | qc->scsidone = done; |
| 338 | |
| 339 | if (cmd->use_sg) { |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 340 | qc->__sg = (struct scatterlist *) cmd->request_buffer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | qc->n_elem = cmd->use_sg; |
| 342 | } else { |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 343 | qc->__sg = &qc->sgent; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | qc->n_elem = 1; |
| 345 | } |
| 346 | } else { |
| 347 | cmd->result = (DID_OK << 16) | (QUEUE_FULL << 1); |
| 348 | done(cmd); |
| 349 | } |
| 350 | |
| 351 | return qc; |
| 352 | } |
| 353 | |
| 354 | /** |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 355 | * ata_dump_status - user friendly display of error info |
| 356 | * @id: id of the port in question |
| 357 | * @tf: ptr to filled out taskfile |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | * |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 359 | * Decode and dump the ATA error/status registers for the user so |
| 360 | * that they have some idea what really happened at the non |
| 361 | * make-believe layer. |
| 362 | * |
| 363 | * LOCKING: |
| 364 | * inherited from caller |
| 365 | */ |
| 366 | void ata_dump_status(unsigned id, struct ata_taskfile *tf) |
| 367 | { |
| 368 | u8 stat = tf->command, err = tf->feature; |
| 369 | |
| 370 | printk(KERN_WARNING "ata%u: status=0x%02x { ", id, stat); |
| 371 | if (stat & ATA_BUSY) { |
| 372 | printk("Busy }\n"); /* Data is not valid in this case */ |
| 373 | } else { |
| 374 | if (stat & 0x40) printk("DriveReady "); |
| 375 | if (stat & 0x20) printk("DeviceFault "); |
| 376 | if (stat & 0x10) printk("SeekComplete "); |
| 377 | if (stat & 0x08) printk("DataRequest "); |
| 378 | if (stat & 0x04) printk("CorrectedError "); |
| 379 | if (stat & 0x02) printk("Index "); |
| 380 | if (stat & 0x01) printk("Error "); |
| 381 | printk("}\n"); |
| 382 | |
| 383 | if (err) { |
| 384 | printk(KERN_WARNING "ata%u: error=0x%02x { ", id, err); |
| 385 | if (err & 0x04) printk("DriveStatusError "); |
| 386 | if (err & 0x80) { |
| 387 | if (err & 0x04) printk("BadCRC "); |
| 388 | else printk("Sector "); |
| 389 | } |
| 390 | if (err & 0x40) printk("UncorrectableError "); |
| 391 | if (err & 0x10) printk("SectorIdNotFound "); |
| 392 | if (err & 0x02) printk("TrackZeroNotFound "); |
| 393 | if (err & 0x01) printk("AddrMarkNotFound "); |
| 394 | printk("}\n"); |
| 395 | } |
| 396 | } |
| 397 | } |
| 398 | |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 399 | int ata_scsi_device_resume(struct scsi_device *sdev) |
| 400 | { |
| 401 | struct ata_port *ap = (struct ata_port *) &sdev->host->hostdata[0]; |
| 402 | struct ata_device *dev = &ap->device[sdev->id]; |
| 403 | |
| 404 | return ata_device_resume(ap, dev); |
| 405 | } |
| 406 | |
| 407 | int ata_scsi_device_suspend(struct scsi_device *sdev) |
| 408 | { |
| 409 | struct ata_port *ap = (struct ata_port *) &sdev->host->hostdata[0]; |
| 410 | struct ata_device *dev = &ap->device[sdev->id]; |
| 411 | |
| 412 | return ata_device_suspend(ap, dev); |
| 413 | } |
| 414 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 415 | /** |
| 416 | * ata_to_sense_error - convert ATA error to SCSI error |
Randy Dunlap | 8e8b77d | 2005-11-01 21:29:27 -0800 | [diff] [blame] | 417 | * @id: ATA device number |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 418 | * @drv_stat: value contained in ATA status register |
| 419 | * @drv_err: value contained in ATA error register |
| 420 | * @sk: the sense key we'll fill out |
| 421 | * @asc: the additional sense code we'll fill out |
| 422 | * @ascq: the additional sense code qualifier we'll fill out |
| 423 | * |
| 424 | * Converts an ATA error into a SCSI error. Fill out pointers to |
| 425 | * SK, ASC, and ASCQ bytes for later use in fixed or descriptor |
| 426 | * format sense blocks. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | * |
| 428 | * LOCKING: |
| 429 | * spin_lock_irqsave(host_set lock) |
| 430 | */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 431 | void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, u8 *asc, |
| 432 | u8 *ascq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | { |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 434 | int i; |
Jeff Garzik | ffe75ef | 2005-10-09 10:40:44 -0400 | [diff] [blame] | 435 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | /* Based on the 3ware driver translation table */ |
Arjan van de Ven | 98ac62d | 2005-11-28 10:06:23 +0100 | [diff] [blame] | 437 | static const unsigned char sense_table[][4] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | /* BBD|ECC|ID|MAR */ |
| 439 | {0xd1, ABORTED_COMMAND, 0x00, 0x00}, // Device busy Aborted command |
| 440 | /* BBD|ECC|ID */ |
| 441 | {0xd0, ABORTED_COMMAND, 0x00, 0x00}, // Device busy Aborted command |
| 442 | /* ECC|MC|MARK */ |
| 443 | {0x61, HARDWARE_ERROR, 0x00, 0x00}, // Device fault Hardware error |
| 444 | /* ICRC|ABRT */ /* NB: ICRC & !ABRT is BBD */ |
| 445 | {0x84, ABORTED_COMMAND, 0x47, 0x00}, // Data CRC error SCSI parity error |
| 446 | /* MC|ID|ABRT|TRK0|MARK */ |
| 447 | {0x37, NOT_READY, 0x04, 0x00}, // Unit offline Not ready |
| 448 | /* MCR|MARK */ |
| 449 | {0x09, NOT_READY, 0x04, 0x00}, // Unrecovered disk error Not ready |
| 450 | /* Bad address mark */ |
| 451 | {0x01, MEDIUM_ERROR, 0x13, 0x00}, // Address mark not found Address mark not found for data field |
| 452 | /* TRK0 */ |
| 453 | {0x02, HARDWARE_ERROR, 0x00, 0x00}, // Track 0 not found Hardware error |
| 454 | /* Abort & !ICRC */ |
| 455 | {0x04, ABORTED_COMMAND, 0x00, 0x00}, // Aborted command Aborted command |
| 456 | /* Media change request */ |
| 457 | {0x08, NOT_READY, 0x04, 0x00}, // Media change request FIXME: faking offline |
| 458 | /* SRV */ |
| 459 | {0x10, ABORTED_COMMAND, 0x14, 0x00}, // ID not found Recorded entity not found |
| 460 | /* Media change */ |
| 461 | {0x08, NOT_READY, 0x04, 0x00}, // Media change FIXME: faking offline |
| 462 | /* ECC */ |
| 463 | {0x40, MEDIUM_ERROR, 0x11, 0x04}, // Uncorrectable ECC error Unrecovered read error |
| 464 | /* BBD - block marked bad */ |
| 465 | {0x80, MEDIUM_ERROR, 0x11, 0x04}, // Block marked bad Medium error, unrecovered read error |
| 466 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
| 467 | }; |
Arjan van de Ven | 98ac62d | 2005-11-28 10:06:23 +0100 | [diff] [blame] | 468 | static const unsigned char stat_table[][4] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | /* Must be first because BUSY means no other bits valid */ |
| 470 | {0x80, ABORTED_COMMAND, 0x47, 0x00}, // Busy, fake parity for now |
| 471 | {0x20, HARDWARE_ERROR, 0x00, 0x00}, // Device fault |
| 472 | {0x08, ABORTED_COMMAND, 0x47, 0x00}, // Timed out in xfer, fake parity for now |
| 473 | {0x04, RECOVERED_ERROR, 0x11, 0x00}, // Recovered ECC error Medium error, recovered |
| 474 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
| 475 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | /* |
| 478 | * Is this an error we can process/parse |
| 479 | */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 480 | if (drv_stat & ATA_BUSY) { |
| 481 | drv_err = 0; /* Ignore the err bits, they're invalid */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 484 | if (drv_err) { |
| 485 | /* Look for drv_err */ |
| 486 | for (i = 0; sense_table[i][0] != 0xFF; i++) { |
| 487 | /* Look for best matches first */ |
| 488 | if ((sense_table[i][0] & drv_err) == |
| 489 | sense_table[i][0]) { |
| 490 | *sk = sense_table[i][1]; |
| 491 | *asc = sense_table[i][2]; |
| 492 | *ascq = sense_table[i][3]; |
| 493 | goto translate_done; |
| 494 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | } |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 496 | /* No immediate match */ |
| 497 | printk(KERN_WARNING "ata%u: no sense translation for " |
| 498 | "error 0x%02x\n", id, drv_err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | } |
| 500 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | /* Fall back to interpreting status bits */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 502 | for (i = 0; stat_table[i][0] != 0xFF; i++) { |
| 503 | if (stat_table[i][0] & drv_stat) { |
| 504 | *sk = stat_table[i][1]; |
| 505 | *asc = stat_table[i][2]; |
| 506 | *ascq = stat_table[i][3]; |
| 507 | goto translate_done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | } |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 510 | /* No error? Undecoded? */ |
| 511 | printk(KERN_WARNING "ata%u: no sense translation for status: 0x%02x\n", |
| 512 | id, drv_stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | |
Alan Cox | 2d20202 | 2006-03-21 15:53:46 +0000 | [diff] [blame] | 514 | /* We need a sensible error return here, which is tricky, and one |
| 515 | that won't cause people to do things like return a disk wrongly */ |
| 516 | *sk = ABORTED_COMMAND; |
| 517 | *asc = 0x00; |
| 518 | *ascq = 0x00; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 519 | |
| 520 | translate_done: |
| 521 | printk(KERN_ERR "ata%u: translated ATA stat/err 0x%02x/%02x to " |
| 522 | "SCSI SK/ASC/ASCQ 0x%x/%02x/%02x\n", id, drv_stat, drv_err, |
| 523 | *sk, *asc, *ascq); |
| 524 | return; |
| 525 | } |
| 526 | |
| 527 | /* |
| 528 | * ata_gen_ata_desc_sense - Generate check condition sense block. |
| 529 | * @qc: Command that completed. |
| 530 | * |
| 531 | * This function is specific to the ATA descriptor format sense |
| 532 | * block specified for the ATA pass through commands. Regardless |
| 533 | * of whether the command errored or not, return a sense |
| 534 | * block. Copy all controller registers into the sense |
| 535 | * block. Clear sense key, ASC & ASCQ if there is no error. |
| 536 | * |
| 537 | * LOCKING: |
| 538 | * spin_lock_irqsave(host_set lock) |
| 539 | */ |
| 540 | void ata_gen_ata_desc_sense(struct ata_queued_cmd *qc) |
| 541 | { |
| 542 | struct scsi_cmnd *cmd = qc->scsicmd; |
| 543 | struct ata_taskfile *tf = &qc->tf; |
| 544 | unsigned char *sb = cmd->sense_buffer; |
| 545 | unsigned char *desc = sb + 8; |
| 546 | |
| 547 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); |
| 548 | |
Jeff Garzik | 0e5dec4 | 2005-10-06 09:40:20 -0400 | [diff] [blame] | 549 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 550 | |
| 551 | /* |
| 552 | * Read the controller registers. |
| 553 | */ |
Tejun Heo | a4631474 | 2006-02-11 19:11:13 +0900 | [diff] [blame] | 554 | WARN_ON(qc->ap->ops->tf_read == NULL); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 555 | qc->ap->ops->tf_read(qc->ap, tf); |
| 556 | |
| 557 | /* |
| 558 | * Use ata_to_sense_error() to map status register bits |
| 559 | * onto sense key, asc & ascq. |
| 560 | */ |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 561 | if (tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 562 | ata_to_sense_error(qc->ap->id, tf->command, tf->feature, |
| 563 | &sb[1], &sb[2], &sb[3]); |
| 564 | sb[1] &= 0x0f; |
| 565 | } |
| 566 | |
| 567 | /* |
| 568 | * Sense data is current and format is descriptor. |
| 569 | */ |
| 570 | sb[0] = 0x72; |
| 571 | |
| 572 | desc[0] = 0x09; |
| 573 | |
| 574 | /* |
| 575 | * Set length of additional sense data. |
| 576 | * Since we only populate descriptor 0, the total |
| 577 | * length is the same (fixed) length as descriptor 0. |
| 578 | */ |
| 579 | desc[1] = sb[7] = 14; |
| 580 | |
| 581 | /* |
| 582 | * Copy registers into sense buffer. |
| 583 | */ |
| 584 | desc[2] = 0x00; |
| 585 | desc[3] = tf->feature; /* == error reg */ |
| 586 | desc[5] = tf->nsect; |
| 587 | desc[7] = tf->lbal; |
| 588 | desc[9] = tf->lbam; |
| 589 | desc[11] = tf->lbah; |
| 590 | desc[12] = tf->device; |
| 591 | desc[13] = tf->command; /* == status reg */ |
| 592 | |
| 593 | /* |
| 594 | * Fill in Extend bit, and the high order bytes |
| 595 | * if applicable. |
| 596 | */ |
| 597 | if (tf->flags & ATA_TFLAG_LBA48) { |
| 598 | desc[2] |= 0x01; |
| 599 | desc[4] = tf->hob_nsect; |
| 600 | desc[6] = tf->hob_lbal; |
| 601 | desc[8] = tf->hob_lbam; |
| 602 | desc[10] = tf->hob_lbah; |
| 603 | } |
| 604 | } |
| 605 | |
| 606 | /** |
| 607 | * ata_gen_fixed_sense - generate a SCSI fixed sense block |
| 608 | * @qc: Command that we are erroring out |
| 609 | * |
| 610 | * Leverage ata_to_sense_error() to give us the codes. Fit our |
| 611 | * LBA in here if there's room. |
| 612 | * |
| 613 | * LOCKING: |
| 614 | * inherited from caller |
| 615 | */ |
| 616 | void ata_gen_fixed_sense(struct ata_queued_cmd *qc) |
| 617 | { |
| 618 | struct scsi_cmnd *cmd = qc->scsicmd; |
| 619 | struct ata_taskfile *tf = &qc->tf; |
| 620 | unsigned char *sb = cmd->sense_buffer; |
| 621 | |
| 622 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); |
| 623 | |
Jeff Garzik | 0e5dec4 | 2005-10-06 09:40:20 -0400 | [diff] [blame] | 624 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 625 | |
| 626 | /* |
| 627 | * Read the controller registers. |
| 628 | */ |
Tejun Heo | a4631474 | 2006-02-11 19:11:13 +0900 | [diff] [blame] | 629 | WARN_ON(qc->ap->ops->tf_read == NULL); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 630 | qc->ap->ops->tf_read(qc->ap, tf); |
| 631 | |
| 632 | /* |
| 633 | * Use ata_to_sense_error() to map status register bits |
| 634 | * onto sense key, asc & ascq. |
| 635 | */ |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 636 | if (tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 637 | ata_to_sense_error(qc->ap->id, tf->command, tf->feature, |
| 638 | &sb[2], &sb[12], &sb[13]); |
| 639 | sb[2] &= 0x0f; |
| 640 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | |
| 642 | sb[0] = 0x70; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 643 | sb[7] = 0x0a; |
Jeff Garzik | 0274aa2 | 2005-06-22 13:50:56 -0400 | [diff] [blame] | 644 | |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 645 | if (tf->flags & ATA_TFLAG_LBA48) { |
| 646 | /* TODO: find solution for LBA48 descriptors */ |
| 647 | } |
| 648 | |
| 649 | else if (tf->flags & ATA_TFLAG_LBA) { |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 650 | /* A small (28b) LBA will fit in the 32b info field */ |
| 651 | sb[0] |= 0x80; /* set valid bit */ |
| 652 | sb[3] = tf->device & 0x0f; |
| 653 | sb[4] = tf->lbah; |
| 654 | sb[5] = tf->lbam; |
| 655 | sb[6] = tf->lbal; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | } |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 657 | |
| 658 | else { |
| 659 | /* TODO: C/H/S */ |
| 660 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | } |
| 662 | |
Brian King | a6cce2a | 2006-03-17 17:04:15 -0600 | [diff] [blame] | 663 | static void ata_scsi_sdev_config(struct scsi_device *sdev) |
| 664 | { |
| 665 | sdev->use_10_for_rw = 1; |
| 666 | sdev->use_10_for_ms = 1; |
| 667 | } |
| 668 | |
| 669 | static void ata_scsi_dev_config(struct scsi_device *sdev, |
| 670 | struct ata_device *dev) |
| 671 | { |
| 672 | unsigned int max_sectors; |
| 673 | |
| 674 | /* TODO: 2048 is an arbitrary number, not the |
| 675 | * hardware maximum. This should be increased to |
| 676 | * 65534 when Jens Axboe's patch for dynamically |
| 677 | * determining max_sectors is merged. |
| 678 | */ |
| 679 | max_sectors = ATA_MAX_SECTORS; |
| 680 | if (dev->flags & ATA_DFLAG_LBA48) |
Tejun Heo | 200d5a76 | 2006-02-15 16:24:49 +0900 | [diff] [blame^] | 681 | max_sectors = ATA_MAX_SECTORS_LBA48; |
Brian King | a6cce2a | 2006-03-17 17:04:15 -0600 | [diff] [blame] | 682 | if (dev->max_sectors) |
| 683 | max_sectors = dev->max_sectors; |
| 684 | |
| 685 | blk_queue_max_sectors(sdev->request_queue, max_sectors); |
| 686 | |
| 687 | /* |
| 688 | * SATA DMA transfers must be multiples of 4 byte, so |
| 689 | * we need to pad ATAPI transfers using an extra sg. |
| 690 | * Decrement max hw segments accordingly. |
| 691 | */ |
| 692 | if (dev->class == ATA_DEV_ATAPI) { |
| 693 | request_queue_t *q = sdev->request_queue; |
| 694 | blk_queue_max_hw_segments(q, q->max_hw_segments - 1); |
| 695 | } |
| 696 | } |
| 697 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | /** |
| 699 | * ata_scsi_slave_config - Set SCSI device attributes |
| 700 | * @sdev: SCSI device to examine |
| 701 | * |
| 702 | * This is called before we actually start reading |
| 703 | * and writing to the device, to configure certain |
| 704 | * SCSI mid-layer behaviors. |
| 705 | * |
| 706 | * LOCKING: |
| 707 | * Defined by SCSI layer. We don't really care. |
| 708 | */ |
| 709 | |
| 710 | int ata_scsi_slave_config(struct scsi_device *sdev) |
| 711 | { |
Brian King | a6cce2a | 2006-03-17 17:04:15 -0600 | [diff] [blame] | 712 | ata_scsi_sdev_config(sdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | |
| 714 | blk_queue_max_phys_segments(sdev->request_queue, LIBATA_MAX_PRD); |
| 715 | |
| 716 | if (sdev->id < ATA_MAX_DEVICES) { |
| 717 | struct ata_port *ap; |
| 718 | struct ata_device *dev; |
| 719 | |
| 720 | ap = (struct ata_port *) &sdev->host->hostdata[0]; |
| 721 | dev = &ap->device[sdev->id]; |
| 722 | |
Brian King | a6cce2a | 2006-03-17 17:04:15 -0600 | [diff] [blame] | 723 | ata_scsi_dev_config(sdev, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | } |
| 725 | |
| 726 | return 0; /* scsi layer doesn't check return value, sigh */ |
| 727 | } |
| 728 | |
| 729 | /** |
Tejun Heo | f29841e | 2006-02-10 15:10:48 +0900 | [diff] [blame] | 730 | * ata_scsi_timed_out - SCSI layer time out callback |
| 731 | * @cmd: timed out SCSI command |
| 732 | * |
| 733 | * Handles SCSI layer timeout. We race with normal completion of |
| 734 | * the qc for @cmd. If the qc is already gone, we lose and let |
| 735 | * the scsi command finish (EH_HANDLED). Otherwise, the qc has |
| 736 | * timed out and EH should be invoked. Prevent ata_qc_complete() |
| 737 | * from finishing it by setting EH_SCHEDULED and return |
| 738 | * EH_NOT_HANDLED. |
| 739 | * |
| 740 | * LOCKING: |
| 741 | * Called from timer context |
| 742 | * |
| 743 | * RETURNS: |
| 744 | * EH_HANDLED or EH_NOT_HANDLED |
| 745 | */ |
| 746 | enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd) |
| 747 | { |
| 748 | struct Scsi_Host *host = cmd->device->host; |
| 749 | struct ata_port *ap = (struct ata_port *) &host->hostdata[0]; |
| 750 | unsigned long flags; |
| 751 | struct ata_queued_cmd *qc; |
| 752 | enum scsi_eh_timer_return ret = EH_HANDLED; |
| 753 | |
| 754 | DPRINTK("ENTER\n"); |
| 755 | |
| 756 | spin_lock_irqsave(&ap->host_set->lock, flags); |
| 757 | qc = ata_qc_from_tag(ap, ap->active_tag); |
| 758 | if (qc) { |
Tejun Heo | a4631474 | 2006-02-11 19:11:13 +0900 | [diff] [blame] | 759 | WARN_ON(qc->scsicmd != cmd); |
Tejun Heo | f29841e | 2006-02-10 15:10:48 +0900 | [diff] [blame] | 760 | qc->flags |= ATA_QCFLAG_EH_SCHEDULED; |
| 761 | qc->err_mask |= AC_ERR_TIMEOUT; |
| 762 | ret = EH_NOT_HANDLED; |
| 763 | } |
| 764 | spin_unlock_irqrestore(&ap->host_set->lock, flags); |
| 765 | |
| 766 | DPRINTK("EXIT, ret=%d\n", ret); |
| 767 | return ret; |
| 768 | } |
| 769 | |
| 770 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 771 | * ata_scsi_error - SCSI layer error handler callback |
| 772 | * @host: SCSI host on which error occurred |
| 773 | * |
| 774 | * Handles SCSI-layer-thrown error events. |
| 775 | * |
| 776 | * LOCKING: |
| 777 | * Inherited from SCSI layer (none, can sleep) |
| 778 | * |
| 779 | * RETURNS: |
| 780 | * Zero. |
| 781 | */ |
| 782 | |
| 783 | int ata_scsi_error(struct Scsi_Host *host) |
| 784 | { |
| 785 | struct ata_port *ap; |
Jeff Garzik | 5140788 | 2006-02-09 01:56:05 -0500 | [diff] [blame] | 786 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | |
| 788 | DPRINTK("ENTER\n"); |
| 789 | |
Jeff Garzik | 5140788 | 2006-02-09 01:56:05 -0500 | [diff] [blame] | 790 | ap = (struct ata_port *) &host->hostdata[0]; |
| 791 | |
Tejun Heo | dde4458 | 2006-02-02 00:56:10 +0900 | [diff] [blame] | 792 | spin_lock_irqsave(&ap->host_set->lock, flags); |
Tejun Heo | a4631474 | 2006-02-11 19:11:13 +0900 | [diff] [blame] | 793 | WARN_ON(ap->flags & ATA_FLAG_IN_EH); |
Tejun Heo | dde4458 | 2006-02-02 00:56:10 +0900 | [diff] [blame] | 794 | ap->flags |= ATA_FLAG_IN_EH; |
Tejun Heo | a4631474 | 2006-02-11 19:11:13 +0900 | [diff] [blame] | 795 | WARN_ON(ata_qc_from_tag(ap, ap->active_tag) == NULL); |
Tejun Heo | dde4458 | 2006-02-02 00:56:10 +0900 | [diff] [blame] | 796 | spin_unlock_irqrestore(&ap->host_set->lock, flags); |
| 797 | |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 798 | ata_port_flush_task(ap); |
| 799 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | ap->ops->eng_timeout(ap); |
| 801 | |
Tejun Heo | a4631474 | 2006-02-11 19:11:13 +0900 | [diff] [blame] | 802 | WARN_ON(host->host_failed || !list_empty(&host->eh_cmd_q)); |
Tejun Heo | a72ec4c | 2006-01-23 13:09:37 +0900 | [diff] [blame] | 803 | |
| 804 | scsi_eh_flush_done_q(&ap->eh_done_q); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | |
Tejun Heo | dde4458 | 2006-02-02 00:56:10 +0900 | [diff] [blame] | 806 | spin_lock_irqsave(&ap->host_set->lock, flags); |
| 807 | ap->flags &= ~ATA_FLAG_IN_EH; |
| 808 | spin_unlock_irqrestore(&ap->host_set->lock, flags); |
| 809 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | DPRINTK("EXIT\n"); |
| 811 | return 0; |
| 812 | } |
| 813 | |
Tejun Heo | a72ec4c | 2006-01-23 13:09:37 +0900 | [diff] [blame] | 814 | static void ata_eh_scsidone(struct scsi_cmnd *scmd) |
| 815 | { |
| 816 | /* nada */ |
| 817 | } |
| 818 | |
| 819 | static void __ata_eh_qc_complete(struct ata_queued_cmd *qc) |
| 820 | { |
| 821 | struct ata_port *ap = qc->ap; |
| 822 | struct scsi_cmnd *scmd = qc->scsicmd; |
| 823 | unsigned long flags; |
| 824 | |
| 825 | spin_lock_irqsave(&ap->host_set->lock, flags); |
| 826 | qc->scsidone = ata_eh_scsidone; |
Tejun Heo | 341963b | 2006-02-10 15:10:48 +0900 | [diff] [blame] | 827 | __ata_qc_complete(qc); |
Tejun Heo | a4631474 | 2006-02-11 19:11:13 +0900 | [diff] [blame] | 828 | WARN_ON(ata_tag_valid(qc->tag)); |
Tejun Heo | a72ec4c | 2006-01-23 13:09:37 +0900 | [diff] [blame] | 829 | spin_unlock_irqrestore(&ap->host_set->lock, flags); |
| 830 | |
| 831 | scsi_eh_finish_cmd(scmd, &ap->eh_done_q); |
| 832 | } |
| 833 | |
| 834 | /** |
| 835 | * ata_eh_qc_complete - Complete an active ATA command from EH |
| 836 | * @qc: Command to complete |
| 837 | * |
| 838 | * Indicate to the mid and upper layers that an ATA command has |
| 839 | * completed. To be used from EH. |
| 840 | */ |
| 841 | void ata_eh_qc_complete(struct ata_queued_cmd *qc) |
| 842 | { |
| 843 | struct scsi_cmnd *scmd = qc->scsicmd; |
| 844 | scmd->retries = scmd->allowed; |
| 845 | __ata_eh_qc_complete(qc); |
| 846 | } |
| 847 | |
| 848 | /** |
| 849 | * ata_eh_qc_retry - Tell midlayer to retry an ATA command after EH |
| 850 | * @qc: Command to retry |
| 851 | * |
| 852 | * Indicate to the mid and upper layers that an ATA command |
| 853 | * should be retried. To be used from EH. |
| 854 | * |
| 855 | * SCSI midlayer limits the number of retries to scmd->allowed. |
| 856 | * This function might need to adjust scmd->retries for commands |
| 857 | * which get retried due to unrelated NCQ failures. |
| 858 | */ |
| 859 | void ata_eh_qc_retry(struct ata_queued_cmd *qc) |
| 860 | { |
| 861 | __ata_eh_qc_complete(qc); |
| 862 | } |
| 863 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | /** |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 865 | * ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command |
| 866 | * @qc: Storage for translated ATA taskfile |
| 867 | * @scsicmd: SCSI command to translate |
| 868 | * |
| 869 | * Sets up an ATA taskfile to issue STANDBY (to stop) or READ VERIFY |
| 870 | * (to start). Perhaps these commands should be preceded by |
| 871 | * CHECK POWER MODE to see what power mode the device is already in. |
| 872 | * [See SAT revision 5 at www.t10.org] |
| 873 | * |
| 874 | * LOCKING: |
| 875 | * spin_lock_irqsave(host_set lock) |
| 876 | * |
| 877 | * RETURNS: |
| 878 | * Zero on success, non-zero on error. |
| 879 | */ |
| 880 | |
| 881 | 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] | 882 | const u8 *scsicmd) |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 883 | { |
| 884 | struct ata_taskfile *tf = &qc->tf; |
| 885 | |
| 886 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; |
| 887 | tf->protocol = ATA_PROT_NODATA; |
| 888 | if (scsicmd[1] & 0x1) { |
| 889 | ; /* ignore IMMED bit, violates sat-r05 */ |
| 890 | } |
| 891 | if (scsicmd[4] & 0x2) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 892 | goto invalid_fld; /* LOEJ bit set not supported */ |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 893 | if (((scsicmd[4] >> 4) & 0xf) != 0) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 894 | goto invalid_fld; /* power conditions not supported */ |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 895 | if (scsicmd[4] & 0x1) { |
| 896 | tf->nsect = 1; /* 1 sector, lba=0 */ |
Albert Lee | 9d5b130 | 2005-10-04 08:48:17 -0400 | [diff] [blame] | 897 | |
| 898 | if (qc->dev->flags & ATA_DFLAG_LBA) { |
| 899 | qc->tf.flags |= ATA_TFLAG_LBA; |
| 900 | |
| 901 | tf->lbah = 0x0; |
| 902 | tf->lbam = 0x0; |
| 903 | tf->lbal = 0x0; |
| 904 | tf->device |= ATA_LBA; |
| 905 | } else { |
| 906 | /* CHS */ |
| 907 | tf->lbal = 0x1; /* sect */ |
| 908 | tf->lbam = 0x0; /* cyl low */ |
| 909 | tf->lbah = 0x0; /* cyl high */ |
| 910 | } |
| 911 | |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 912 | tf->command = ATA_CMD_VERIFY; /* READ VERIFY */ |
| 913 | } else { |
| 914 | tf->nsect = 0; /* time period value (0 implies now) */ |
| 915 | tf->command = ATA_CMD_STANDBY; |
| 916 | /* Consider: ATA STANDBY IMMEDIATE command */ |
| 917 | } |
| 918 | /* |
| 919 | * Standby and Idle condition timers could be implemented but that |
| 920 | * would require libata to implement the Power condition mode page |
| 921 | * and allow the user to change it. Changing mode pages requires |
| 922 | * MODE SELECT to be implemented. |
| 923 | */ |
| 924 | |
| 925 | return 0; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 926 | |
| 927 | invalid_fld: |
| 928 | ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x24, 0x0); |
| 929 | /* "Invalid field in cbd" */ |
| 930 | return 1; |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 931 | } |
| 932 | |
| 933 | |
| 934 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 935 | * ata_scsi_flush_xlat - Translate SCSI SYNCHRONIZE CACHE command |
| 936 | * @qc: Storage for translated ATA taskfile |
| 937 | * @scsicmd: SCSI command to translate (ignored) |
| 938 | * |
| 939 | * Sets up an ATA taskfile to issue FLUSH CACHE or |
| 940 | * FLUSH CACHE EXT. |
| 941 | * |
| 942 | * LOCKING: |
| 943 | * spin_lock_irqsave(host_set lock) |
| 944 | * |
| 945 | * RETURNS: |
| 946 | * Zero on success, non-zero on error. |
| 947 | */ |
| 948 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 949 | 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] | 950 | { |
| 951 | struct ata_taskfile *tf = &qc->tf; |
| 952 | |
| 953 | tf->flags |= ATA_TFLAG_DEVICE; |
| 954 | tf->protocol = ATA_PROT_NODATA; |
| 955 | |
Albert Lee | 0750669 | 2005-10-12 15:04:18 +0800 | [diff] [blame] | 956 | if ((qc->dev->flags & ATA_DFLAG_LBA48) && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | (ata_id_has_flush_ext(qc->dev->id))) |
| 958 | tf->command = ATA_CMD_FLUSH_EXT; |
| 959 | else |
| 960 | tf->command = ATA_CMD_FLUSH; |
| 961 | |
| 962 | return 0; |
| 963 | } |
| 964 | |
| 965 | /** |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 966 | * scsi_6_lba_len - Get LBA and transfer length |
| 967 | * @scsicmd: SCSI command to translate |
| 968 | * |
| 969 | * Calculate LBA and transfer length for 6-byte commands. |
| 970 | * |
| 971 | * RETURNS: |
| 972 | * @plba: the LBA |
| 973 | * @plen: the transfer length |
| 974 | */ |
| 975 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 976 | 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] | 977 | { |
| 978 | u64 lba = 0; |
| 979 | u32 len = 0; |
| 980 | |
| 981 | VPRINTK("six-byte command\n"); |
| 982 | |
| 983 | lba |= ((u64)scsicmd[2]) << 8; |
| 984 | lba |= ((u64)scsicmd[3]); |
| 985 | |
| 986 | len |= ((u32)scsicmd[4]); |
| 987 | |
| 988 | *plba = lba; |
| 989 | *plen = len; |
| 990 | } |
| 991 | |
| 992 | /** |
| 993 | * scsi_10_lba_len - Get LBA and transfer length |
| 994 | * @scsicmd: SCSI command to translate |
| 995 | * |
| 996 | * Calculate LBA and transfer length for 10-byte commands. |
| 997 | * |
| 998 | * RETURNS: |
| 999 | * @plba: the LBA |
| 1000 | * @plen: the transfer length |
| 1001 | */ |
| 1002 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 1003 | 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] | 1004 | { |
| 1005 | u64 lba = 0; |
| 1006 | u32 len = 0; |
| 1007 | |
| 1008 | VPRINTK("ten-byte command\n"); |
| 1009 | |
| 1010 | lba |= ((u64)scsicmd[2]) << 24; |
| 1011 | lba |= ((u64)scsicmd[3]) << 16; |
| 1012 | lba |= ((u64)scsicmd[4]) << 8; |
| 1013 | lba |= ((u64)scsicmd[5]); |
| 1014 | |
| 1015 | len |= ((u32)scsicmd[7]) << 8; |
| 1016 | len |= ((u32)scsicmd[8]); |
| 1017 | |
| 1018 | *plba = lba; |
| 1019 | *plen = len; |
| 1020 | } |
| 1021 | |
| 1022 | /** |
| 1023 | * scsi_16_lba_len - Get LBA and transfer length |
| 1024 | * @scsicmd: SCSI command to translate |
| 1025 | * |
| 1026 | * Calculate LBA and transfer length for 16-byte commands. |
| 1027 | * |
| 1028 | * RETURNS: |
| 1029 | * @plba: the LBA |
| 1030 | * @plen: the transfer length |
| 1031 | */ |
| 1032 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 1033 | 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] | 1034 | { |
| 1035 | u64 lba = 0; |
| 1036 | u32 len = 0; |
| 1037 | |
| 1038 | VPRINTK("sixteen-byte command\n"); |
| 1039 | |
| 1040 | lba |= ((u64)scsicmd[2]) << 56; |
| 1041 | lba |= ((u64)scsicmd[3]) << 48; |
| 1042 | lba |= ((u64)scsicmd[4]) << 40; |
| 1043 | lba |= ((u64)scsicmd[5]) << 32; |
| 1044 | lba |= ((u64)scsicmd[6]) << 24; |
| 1045 | lba |= ((u64)scsicmd[7]) << 16; |
| 1046 | lba |= ((u64)scsicmd[8]) << 8; |
| 1047 | lba |= ((u64)scsicmd[9]); |
| 1048 | |
| 1049 | len |= ((u32)scsicmd[10]) << 24; |
| 1050 | len |= ((u32)scsicmd[11]) << 16; |
| 1051 | len |= ((u32)scsicmd[12]) << 8; |
| 1052 | len |= ((u32)scsicmd[13]); |
| 1053 | |
| 1054 | *plba = lba; |
| 1055 | *plen = len; |
| 1056 | } |
| 1057 | |
| 1058 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | * ata_scsi_verify_xlat - Translate SCSI VERIFY command into an ATA one |
| 1060 | * @qc: Storage for translated ATA taskfile |
| 1061 | * @scsicmd: SCSI command to translate |
| 1062 | * |
| 1063 | * Converts SCSI VERIFY command to an ATA READ VERIFY command. |
| 1064 | * |
| 1065 | * LOCKING: |
| 1066 | * spin_lock_irqsave(host_set lock) |
| 1067 | * |
| 1068 | * RETURNS: |
| 1069 | * Zero on success, non-zero on error. |
| 1070 | */ |
| 1071 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 1072 | 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] | 1073 | { |
| 1074 | struct ata_taskfile *tf = &qc->tf; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1075 | struct ata_device *dev = qc->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1076 | u64 dev_sectors = qc->dev->n_sectors; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1077 | u64 block; |
| 1078 | u32 n_block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1079 | |
| 1080 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 1081 | tf->protocol = ATA_PROT_NODATA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1082 | |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1083 | if (scsicmd[0] == VERIFY) |
| 1084 | scsi_10_lba_len(scsicmd, &block, &n_block); |
| 1085 | else if (scsicmd[0] == VERIFY_16) |
| 1086 | scsi_16_lba_len(scsicmd, &block, &n_block); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | else |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1088 | goto invalid_fld; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1090 | if (!n_block) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1091 | goto nothing_to_do; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1092 | if (block >= dev_sectors) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1093 | goto out_of_range; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1094 | if ((block + n_block) > dev_sectors) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1095 | goto out_of_range; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1096 | |
Albert Lee | 0750669 | 2005-10-12 15:04:18 +0800 | [diff] [blame] | 1097 | if (dev->flags & ATA_DFLAG_LBA) { |
| 1098 | tf->flags |= ATA_TFLAG_LBA; |
| 1099 | |
Albert Lee | c6a33e2 | 2005-10-12 15:12:26 +0800 | [diff] [blame] | 1100 | if (lba_28_ok(block, n_block)) { |
| 1101 | /* use LBA28 */ |
| 1102 | tf->command = ATA_CMD_VERIFY; |
| 1103 | tf->device |= (block >> 24) & 0xf; |
| 1104 | } else if (lba_48_ok(block, n_block)) { |
| 1105 | if (!(dev->flags & ATA_DFLAG_LBA48)) |
| 1106 | goto out_of_range; |
Albert Lee | 0750669 | 2005-10-12 15:04:18 +0800 | [diff] [blame] | 1107 | |
| 1108 | /* use LBA48 */ |
| 1109 | tf->flags |= ATA_TFLAG_LBA48; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1110 | tf->command = ATA_CMD_VERIFY_EXT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1111 | |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1112 | tf->hob_nsect = (n_block >> 8) & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1113 | |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1114 | tf->hob_lbah = (block >> 40) & 0xff; |
| 1115 | tf->hob_lbam = (block >> 32) & 0xff; |
| 1116 | tf->hob_lbal = (block >> 24) & 0xff; |
Albert Lee | c6a33e2 | 2005-10-12 15:12:26 +0800 | [diff] [blame] | 1117 | } else |
| 1118 | /* request too large even for LBA48 */ |
| 1119 | goto out_of_range; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1120 | |
| 1121 | tf->nsect = n_block & 0xff; |
| 1122 | |
| 1123 | tf->lbah = (block >> 16) & 0xff; |
| 1124 | tf->lbam = (block >> 8) & 0xff; |
| 1125 | tf->lbal = block & 0xff; |
| 1126 | |
| 1127 | tf->device |= ATA_LBA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1128 | } else { |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1129 | /* CHS */ |
| 1130 | u32 sect, head, cyl, track; |
| 1131 | |
Albert Lee | c6a33e2 | 2005-10-12 15:12:26 +0800 | [diff] [blame] | 1132 | if (!lba_28_ok(block, n_block)) |
| 1133 | goto out_of_range; |
Albert Lee | 0750669 | 2005-10-12 15:04:18 +0800 | [diff] [blame] | 1134 | |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1135 | /* Convert LBA to CHS */ |
| 1136 | track = (u32)block / dev->sectors; |
| 1137 | cyl = track / dev->heads; |
| 1138 | head = track % dev->heads; |
| 1139 | sect = (u32)block % dev->sectors + 1; |
| 1140 | |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1141 | DPRINTK("block %u track %u cyl %u head %u sect %u\n", |
| 1142 | (u32)block, track, cyl, head, sect); |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1143 | |
| 1144 | /* Check whether the converted CHS can fit. |
| 1145 | Cylinder: 0-65535 |
| 1146 | Head: 0-15 |
| 1147 | Sector: 1-255*/ |
| 1148 | if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect)) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1149 | goto out_of_range; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1150 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1151 | tf->command = ATA_CMD_VERIFY; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1152 | tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */ |
| 1153 | tf->lbal = sect; |
| 1154 | tf->lbam = cyl; |
| 1155 | tf->lbah = cyl >> 8; |
| 1156 | tf->device |= head; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | } |
| 1158 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1159 | return 0; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1160 | |
| 1161 | invalid_fld: |
| 1162 | ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x24, 0x0); |
| 1163 | /* "Invalid field in cbd" */ |
| 1164 | return 1; |
| 1165 | |
| 1166 | out_of_range: |
| 1167 | ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x21, 0x0); |
| 1168 | /* "Logical Block Address out of range" */ |
| 1169 | return 1; |
| 1170 | |
| 1171 | nothing_to_do: |
| 1172 | qc->scsicmd->result = SAM_STAT_GOOD; |
| 1173 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1174 | } |
| 1175 | |
| 1176 | /** |
| 1177 | * ata_scsi_rw_xlat - Translate SCSI r/w command into an ATA one |
| 1178 | * @qc: Storage for translated ATA taskfile |
| 1179 | * @scsicmd: SCSI command to translate |
| 1180 | * |
| 1181 | * Converts any of six SCSI read/write commands into the |
| 1182 | * ATA counterpart, including starting sector (LBA), |
| 1183 | * sector count, and taking into account the device's LBA48 |
| 1184 | * support. |
| 1185 | * |
| 1186 | * Commands %READ_6, %READ_10, %READ_16, %WRITE_6, %WRITE_10, and |
| 1187 | * %WRITE_16 are currently supported. |
| 1188 | * |
| 1189 | * LOCKING: |
| 1190 | * spin_lock_irqsave(host_set lock) |
| 1191 | * |
| 1192 | * RETURNS: |
| 1193 | * Zero on success, non-zero on error. |
| 1194 | */ |
| 1195 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 1196 | 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] | 1197 | { |
| 1198 | struct ata_taskfile *tf = &qc->tf; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1199 | struct ata_device *dev = qc->dev; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1200 | u64 block; |
| 1201 | u32 n_block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1202 | |
| 1203 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1204 | |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 1205 | if (scsicmd[0] == WRITE_10 || scsicmd[0] == WRITE_6 || |
| 1206 | scsicmd[0] == WRITE_16) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1207 | tf->flags |= ATA_TFLAG_WRITE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 1209 | /* Calculate the SCSI LBA, transfer length and FUA. */ |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1210 | switch (scsicmd[0]) { |
| 1211 | case READ_10: |
| 1212 | case WRITE_10: |
| 1213 | scsi_10_lba_len(scsicmd, &block, &n_block); |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 1214 | if (unlikely(scsicmd[1] & (1 << 3))) |
| 1215 | tf->flags |= ATA_TFLAG_FUA; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1216 | break; |
| 1217 | case READ_6: |
| 1218 | case WRITE_6: |
| 1219 | scsi_6_lba_len(scsicmd, &block, &n_block); |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1220 | |
| 1221 | /* for 6-byte r/w commands, transfer length 0 |
| 1222 | * means 256 blocks of data, not 0 block. |
| 1223 | */ |
Jeff Garzik | 76b2bf9 | 2005-08-29 19:24:43 -0400 | [diff] [blame] | 1224 | if (!n_block) |
| 1225 | n_block = 256; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1226 | break; |
| 1227 | case READ_16: |
| 1228 | case WRITE_16: |
| 1229 | scsi_16_lba_len(scsicmd, &block, &n_block); |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 1230 | if (unlikely(scsicmd[1] & (1 << 3))) |
| 1231 | tf->flags |= ATA_TFLAG_FUA; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1232 | break; |
| 1233 | default: |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1234 | DPRINTK("no-byte command\n"); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1235 | goto invalid_fld; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1236 | } |
| 1237 | |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1238 | /* Check and compose ATA command */ |
| 1239 | if (!n_block) |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1240 | /* For 10-byte and 16-byte SCSI R/W commands, transfer |
| 1241 | * length 0 means transfer 0 block of data. |
| 1242 | * However, for ATA R/W commands, sector count 0 means |
| 1243 | * 256 or 65536 sectors, not 0 sectors as in SCSI. |
Alan Cox | f51750d | 2005-11-07 17:06:33 +0000 | [diff] [blame] | 1244 | * |
| 1245 | * WARNING: one or two older ATA drives treat 0 as 0... |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1246 | */ |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1247 | goto nothing_to_do; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1248 | |
Albert Lee | 0750669 | 2005-10-12 15:04:18 +0800 | [diff] [blame] | 1249 | if (dev->flags & ATA_DFLAG_LBA) { |
| 1250 | tf->flags |= ATA_TFLAG_LBA; |
| 1251 | |
Albert Lee | c6a33e2 | 2005-10-12 15:12:26 +0800 | [diff] [blame] | 1252 | if (lba_28_ok(block, n_block)) { |
| 1253 | /* use LBA28 */ |
| 1254 | tf->device |= (block >> 24) & 0xf; |
| 1255 | } else if (lba_48_ok(block, n_block)) { |
| 1256 | if (!(dev->flags & ATA_DFLAG_LBA48)) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1257 | goto out_of_range; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1258 | |
Albert Lee | 0750669 | 2005-10-12 15:04:18 +0800 | [diff] [blame] | 1259 | /* use LBA48 */ |
| 1260 | tf->flags |= ATA_TFLAG_LBA48; |
| 1261 | |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1262 | tf->hob_nsect = (n_block >> 8) & 0xff; |
| 1263 | |
| 1264 | tf->hob_lbah = (block >> 40) & 0xff; |
| 1265 | tf->hob_lbam = (block >> 32) & 0xff; |
| 1266 | tf->hob_lbal = (block >> 24) & 0xff; |
Albert Lee | c6a33e2 | 2005-10-12 15:12:26 +0800 | [diff] [blame] | 1267 | } else |
| 1268 | /* request too large even for LBA48 */ |
| 1269 | goto out_of_range; |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1270 | |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 1271 | if (unlikely(ata_rwcmd_protocol(qc) < 0)) |
| 1272 | goto invalid_fld; |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 1273 | |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1274 | qc->nsect = n_block; |
| 1275 | tf->nsect = n_block & 0xff; |
| 1276 | |
| 1277 | tf->lbah = (block >> 16) & 0xff; |
| 1278 | tf->lbam = (block >> 8) & 0xff; |
| 1279 | tf->lbal = block & 0xff; |
| 1280 | |
| 1281 | tf->device |= ATA_LBA; |
| 1282 | } else { |
| 1283 | /* CHS */ |
| 1284 | u32 sect, head, cyl, track; |
| 1285 | |
| 1286 | /* The request -may- be too large for CHS addressing. */ |
Albert Lee | c6a33e2 | 2005-10-12 15:12:26 +0800 | [diff] [blame] | 1287 | if (!lba_28_ok(block, n_block)) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1288 | goto out_of_range; |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1289 | |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 1290 | if (unlikely(ata_rwcmd_protocol(qc) < 0)) |
| 1291 | goto invalid_fld; |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 1292 | |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1293 | /* Convert LBA to CHS */ |
| 1294 | track = (u32)block / dev->sectors; |
| 1295 | cyl = track / dev->heads; |
| 1296 | head = track % dev->heads; |
| 1297 | sect = (u32)block % dev->sectors + 1; |
| 1298 | |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1299 | DPRINTK("block %u track %u cyl %u head %u sect %u\n", |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1300 | (u32)block, track, cyl, head, sect); |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1301 | |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1302 | /* Check whether the converted CHS can fit. |
| 1303 | Cylinder: 0-65535 |
| 1304 | Head: 0-15 |
| 1305 | Sector: 1-255*/ |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1306 | if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect)) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1307 | goto out_of_range; |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1308 | |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1309 | qc->nsect = n_block; |
| 1310 | tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */ |
| 1311 | tf->lbal = sect; |
| 1312 | tf->lbam = cyl; |
| 1313 | tf->lbah = cyl >> 8; |
| 1314 | tf->device |= head; |
| 1315 | } |
| 1316 | |
| 1317 | return 0; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1318 | |
| 1319 | invalid_fld: |
| 1320 | ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x24, 0x0); |
| 1321 | /* "Invalid field in cbd" */ |
| 1322 | return 1; |
| 1323 | |
| 1324 | out_of_range: |
| 1325 | ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x21, 0x0); |
| 1326 | /* "Logical Block Address out of range" */ |
| 1327 | return 1; |
| 1328 | |
| 1329 | nothing_to_do: |
| 1330 | qc->scsicmd->result = SAM_STAT_GOOD; |
| 1331 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1332 | } |
| 1333 | |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1334 | static void ata_scsi_qc_complete(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1335 | { |
| 1336 | struct scsi_cmnd *cmd = qc->scsicmd; |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 1337 | u8 *cdb = cmd->cmnd; |
Albert Lee | a22e2eb | 2005-12-05 15:38:02 +0800 | [diff] [blame] | 1338 | int need_sense = (qc->err_mask != 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1339 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1340 | /* For ATA pass thru (SAT) commands, generate a sense block if |
| 1341 | * user mandated it or if there's an error. Note that if we |
| 1342 | * generate because the user forced us to, a check condition |
| 1343 | * is generated and the ATA register values are returned |
| 1344 | * whether the command completed successfully or not. If there |
| 1345 | * was no error, SK, ASC and ASCQ will all be zero. |
| 1346 | */ |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 1347 | if (((cdb[0] == ATA_16) || (cdb[0] == ATA_12)) && |
| 1348 | ((cdb[2] & 0x20) || need_sense)) { |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1349 | ata_gen_ata_desc_sense(qc); |
| 1350 | } else { |
| 1351 | if (!need_sense) { |
| 1352 | cmd->result = SAM_STAT_GOOD; |
| 1353 | } else { |
| 1354 | /* TODO: decide which descriptor format to use |
| 1355 | * for 48b LBA devices and call that here |
| 1356 | * instead of the fixed desc, which is only |
| 1357 | * good for smaller LBA (and maybe CHS?) |
| 1358 | * devices. |
| 1359 | */ |
| 1360 | ata_gen_fixed_sense(qc); |
| 1361 | } |
| 1362 | } |
| 1363 | |
| 1364 | if (need_sense) { |
| 1365 | /* The ata_gen_..._sense routines fill in tf */ |
| 1366 | ata_dump_status(qc->ap->id, &qc->tf); |
| 1367 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1368 | |
| 1369 | qc->scsidone(cmd); |
| 1370 | |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1371 | ata_qc_free(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1372 | } |
| 1373 | |
| 1374 | /** |
| 1375 | * ata_scsi_translate - Translate then issue SCSI command to ATA device |
| 1376 | * @ap: ATA port to which the command is addressed |
| 1377 | * @dev: ATA device to which the command is addressed |
| 1378 | * @cmd: SCSI command to execute |
| 1379 | * @done: SCSI command completion function |
| 1380 | * @xlat_func: Actor which translates @cmd to an ATA taskfile |
| 1381 | * |
| 1382 | * Our ->queuecommand() function has decided that the SCSI |
| 1383 | * command issued can be directly translated into an ATA |
| 1384 | * command, rather than handled internally. |
| 1385 | * |
| 1386 | * This function sets up an ata_queued_cmd structure for the |
| 1387 | * SCSI command, and sends that ata_queued_cmd to the hardware. |
| 1388 | * |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1389 | * The xlat_func argument (actor) returns 0 if ready to execute |
| 1390 | * ATA command, else 1 to finish translation. If 1 is returned |
| 1391 | * then cmd->result (and possibly cmd->sense_buffer) are assumed |
| 1392 | * to be set reflecting an error condition or clean (early) |
| 1393 | * termination. |
| 1394 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1395 | * LOCKING: |
| 1396 | * spin_lock_irqsave(host_set lock) |
| 1397 | */ |
| 1398 | |
| 1399 | static void ata_scsi_translate(struct ata_port *ap, struct ata_device *dev, |
| 1400 | struct scsi_cmnd *cmd, |
| 1401 | void (*done)(struct scsi_cmnd *), |
| 1402 | ata_xlat_func_t xlat_func) |
| 1403 | { |
| 1404 | struct ata_queued_cmd *qc; |
| 1405 | u8 *scsicmd = cmd->cmnd; |
| 1406 | |
| 1407 | VPRINTK("ENTER\n"); |
| 1408 | |
| 1409 | qc = ata_scsi_qc_new(ap, dev, cmd, done); |
| 1410 | if (!qc) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1411 | goto err_mem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1412 | |
| 1413 | /* data is present; dma-map it */ |
| be7db05 | 2005-04-17 15:26:13 -0500 | [diff] [blame] | 1414 | if (cmd->sc_data_direction == DMA_FROM_DEVICE || |
| 1415 | cmd->sc_data_direction == DMA_TO_DEVICE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1416 | if (unlikely(cmd->request_bufflen < 1)) { |
| 1417 | printk(KERN_WARNING "ata%u(%u): WARNING: zero len r/w req\n", |
| 1418 | ap->id, dev->devno); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1419 | goto err_did; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1420 | } |
| 1421 | |
| 1422 | if (cmd->use_sg) |
| 1423 | ata_sg_init(qc, cmd->request_buffer, cmd->use_sg); |
| 1424 | else |
| 1425 | ata_sg_init_one(qc, cmd->request_buffer, |
| 1426 | cmd->request_bufflen); |
| 1427 | |
| 1428 | qc->dma_dir = cmd->sc_data_direction; |
| 1429 | } |
| 1430 | |
| 1431 | qc->complete_fn = ata_scsi_qc_complete; |
| 1432 | |
| 1433 | if (xlat_func(qc, scsicmd)) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1434 | goto early_finish; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1435 | |
| 1436 | /* select device, send command to hardware */ |
Tejun Heo | 9a3d9eb | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1437 | qc->err_mask = ata_qc_issue(qc); |
| 1438 | if (qc->err_mask) |
Tejun Heo | 8e436af | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1439 | ata_qc_complete(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1440 | |
| 1441 | VPRINTK("EXIT\n"); |
| 1442 | return; |
| 1443 | |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1444 | early_finish: |
| 1445 | ata_qc_free(qc); |
| 1446 | done(cmd); |
| 1447 | DPRINTK("EXIT - early finish (good or error)\n"); |
| 1448 | return; |
| 1449 | |
| 1450 | err_did: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1451 | ata_qc_free(qc); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1452 | err_mem: |
| 1453 | cmd->result = (DID_ERROR << 16); |
| 1454 | done(cmd); |
| 1455 | DPRINTK("EXIT - internal\n"); |
| 1456 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1457 | } |
| 1458 | |
| 1459 | /** |
| 1460 | * ata_scsi_rbuf_get - Map response buffer. |
| 1461 | * @cmd: SCSI command containing buffer to be mapped. |
| 1462 | * @buf_out: Pointer to mapped area. |
| 1463 | * |
| 1464 | * Maps buffer contained within SCSI command @cmd. |
| 1465 | * |
| 1466 | * LOCKING: |
| 1467 | * spin_lock_irqsave(host_set lock) |
| 1468 | * |
| 1469 | * RETURNS: |
| 1470 | * Length of response buffer. |
| 1471 | */ |
| 1472 | |
| 1473 | static unsigned int ata_scsi_rbuf_get(struct scsi_cmnd *cmd, u8 **buf_out) |
| 1474 | { |
| 1475 | u8 *buf; |
| 1476 | unsigned int buflen; |
| 1477 | |
| 1478 | if (cmd->use_sg) { |
| 1479 | struct scatterlist *sg; |
| 1480 | |
| 1481 | sg = (struct scatterlist *) cmd->request_buffer; |
| 1482 | buf = kmap_atomic(sg->page, KM_USER0) + sg->offset; |
| 1483 | buflen = sg->length; |
| 1484 | } else { |
| 1485 | buf = cmd->request_buffer; |
| 1486 | buflen = cmd->request_bufflen; |
| 1487 | } |
| 1488 | |
| 1489 | *buf_out = buf; |
| 1490 | return buflen; |
| 1491 | } |
| 1492 | |
| 1493 | /** |
| 1494 | * ata_scsi_rbuf_put - Unmap response buffer. |
| 1495 | * @cmd: SCSI command containing buffer to be unmapped. |
| 1496 | * @buf: buffer to unmap |
| 1497 | * |
| 1498 | * Unmaps response buffer contained within @cmd. |
| 1499 | * |
| 1500 | * LOCKING: |
| 1501 | * spin_lock_irqsave(host_set lock) |
| 1502 | */ |
| 1503 | |
| 1504 | static inline void ata_scsi_rbuf_put(struct scsi_cmnd *cmd, u8 *buf) |
| 1505 | { |
| 1506 | if (cmd->use_sg) { |
| 1507 | struct scatterlist *sg; |
| 1508 | |
| 1509 | sg = (struct scatterlist *) cmd->request_buffer; |
| 1510 | kunmap_atomic(buf - sg->offset, KM_USER0); |
| 1511 | } |
| 1512 | } |
| 1513 | |
| 1514 | /** |
| 1515 | * ata_scsi_rbuf_fill - wrapper for SCSI command simulators |
| 1516 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1517 | * @actor: Callback hook for desired SCSI command simulator |
| 1518 | * |
| 1519 | * Takes care of the hard work of simulating a SCSI command... |
| 1520 | * Mapping the response buffer, calling the command's handler, |
| 1521 | * and handling the handler's return value. This return value |
| 1522 | * indicates whether the handler wishes the SCSI command to be |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1523 | * completed successfully (0), or not (in which case cmd->result |
| 1524 | * and sense buffer are assumed to be set). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1525 | * |
| 1526 | * LOCKING: |
| 1527 | * spin_lock_irqsave(host_set lock) |
| 1528 | */ |
| 1529 | |
| 1530 | void ata_scsi_rbuf_fill(struct ata_scsi_args *args, |
| 1531 | unsigned int (*actor) (struct ata_scsi_args *args, |
| 1532 | u8 *rbuf, unsigned int buflen)) |
| 1533 | { |
| 1534 | u8 *rbuf; |
| 1535 | unsigned int buflen, rc; |
| 1536 | struct scsi_cmnd *cmd = args->cmd; |
| 1537 | |
| 1538 | buflen = ata_scsi_rbuf_get(cmd, &rbuf); |
| 1539 | memset(rbuf, 0, buflen); |
| 1540 | rc = actor(args, rbuf, buflen); |
| 1541 | ata_scsi_rbuf_put(cmd, rbuf); |
| 1542 | |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1543 | if (rc == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1544 | cmd->result = SAM_STAT_GOOD; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1545 | args->done(cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1546 | } |
| 1547 | |
| 1548 | /** |
| 1549 | * ata_scsiop_inq_std - Simulate INQUIRY command |
| 1550 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1551 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 1552 | * @buflen: Response buffer length. |
| 1553 | * |
| 1554 | * Returns standard device identification data associated |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1555 | * with non-VPD INQUIRY command output. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1556 | * |
| 1557 | * LOCKING: |
| 1558 | * spin_lock_irqsave(host_set lock) |
| 1559 | */ |
| 1560 | |
| 1561 | unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf, |
| 1562 | unsigned int buflen) |
| 1563 | { |
| 1564 | u8 hdr[] = { |
| 1565 | TYPE_DISK, |
| 1566 | 0, |
| 1567 | 0x5, /* claim SPC-3 version compatibility */ |
| 1568 | 2, |
| 1569 | 95 - 4 |
| 1570 | }; |
| 1571 | |
| 1572 | /* set scsi removeable (RMB) bit per ata bit */ |
| 1573 | if (ata_id_removeable(args->id)) |
| 1574 | hdr[1] |= (1 << 7); |
| 1575 | |
| 1576 | VPRINTK("ENTER\n"); |
| 1577 | |
| 1578 | memcpy(rbuf, hdr, sizeof(hdr)); |
| 1579 | |
| 1580 | if (buflen > 35) { |
| 1581 | memcpy(&rbuf[8], "ATA ", 8); |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 1582 | ata_id_string(args->id, &rbuf[16], ATA_ID_PROD_OFS, 16); |
| 1583 | ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV_OFS, 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1584 | if (rbuf[32] == 0 || rbuf[32] == ' ') |
| 1585 | memcpy(&rbuf[32], "n/a ", 4); |
| 1586 | } |
| 1587 | |
| 1588 | if (buflen > 63) { |
| 1589 | const u8 versions[] = { |
| 1590 | 0x60, /* SAM-3 (no version claimed) */ |
| 1591 | |
| 1592 | 0x03, |
| 1593 | 0x20, /* SBC-2 (no version claimed) */ |
| 1594 | |
| 1595 | 0x02, |
| 1596 | 0x60 /* SPC-3 (no version claimed) */ |
| 1597 | }; |
| 1598 | |
| 1599 | memcpy(rbuf + 59, versions, sizeof(versions)); |
| 1600 | } |
| 1601 | |
| 1602 | return 0; |
| 1603 | } |
| 1604 | |
| 1605 | /** |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1606 | * ata_scsiop_inq_00 - Simulate INQUIRY VPD page 0, list of pages |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1607 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1608 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 1609 | * @buflen: Response buffer length. |
| 1610 | * |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1611 | * Returns list of inquiry VPD pages available. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1612 | * |
| 1613 | * LOCKING: |
| 1614 | * spin_lock_irqsave(host_set lock) |
| 1615 | */ |
| 1616 | |
| 1617 | unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf, |
| 1618 | unsigned int buflen) |
| 1619 | { |
| 1620 | const u8 pages[] = { |
| 1621 | 0x00, /* page 0x00, this page */ |
| 1622 | 0x80, /* page 0x80, unit serial no page */ |
| 1623 | 0x83 /* page 0x83, device ident page */ |
| 1624 | }; |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1625 | rbuf[3] = sizeof(pages); /* number of supported VPD pages */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1626 | |
| 1627 | if (buflen > 6) |
| 1628 | memcpy(rbuf + 4, pages, sizeof(pages)); |
| 1629 | |
| 1630 | return 0; |
| 1631 | } |
| 1632 | |
| 1633 | /** |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1634 | * ata_scsiop_inq_80 - Simulate INQUIRY VPD page 80, device serial number |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1635 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1636 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 1637 | * @buflen: Response buffer length. |
| 1638 | * |
| 1639 | * Returns ATA device serial number. |
| 1640 | * |
| 1641 | * LOCKING: |
| 1642 | * spin_lock_irqsave(host_set lock) |
| 1643 | */ |
| 1644 | |
| 1645 | unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf, |
| 1646 | unsigned int buflen) |
| 1647 | { |
| 1648 | const u8 hdr[] = { |
| 1649 | 0, |
| 1650 | 0x80, /* this page code */ |
| 1651 | 0, |
| 1652 | ATA_SERNO_LEN, /* page len */ |
| 1653 | }; |
| 1654 | memcpy(rbuf, hdr, sizeof(hdr)); |
| 1655 | |
| 1656 | if (buflen > (ATA_SERNO_LEN + 4 - 1)) |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 1657 | ata_id_string(args->id, (unsigned char *) &rbuf[4], |
| 1658 | ATA_ID_SERNO_OFS, ATA_SERNO_LEN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1659 | |
| 1660 | return 0; |
| 1661 | } |
| 1662 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1663 | /** |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1664 | * ata_scsiop_inq_83 - Simulate INQUIRY VPD page 83, device identity |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1666 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 1667 | * @buflen: Response buffer length. |
| 1668 | * |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1669 | * Yields two logical unit device identification designators: |
| 1670 | * - vendor specific ASCII containing the ATA serial number |
| 1671 | * - SAT defined "t10 vendor id based" containing ASCII vendor |
| 1672 | * name ("ATA "), model and serial numbers. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1673 | * |
| 1674 | * LOCKING: |
| 1675 | * spin_lock_irqsave(host_set lock) |
| 1676 | */ |
| 1677 | |
| 1678 | unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf, |
| 1679 | unsigned int buflen) |
| 1680 | { |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1681 | int num; |
| 1682 | const int sat_model_serial_desc_len = 68; |
| 1683 | const int ata_model_byte_len = 40; |
| 1684 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1685 | rbuf[1] = 0x83; /* this page code */ |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1686 | num = 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1687 | |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1688 | if (buflen > (ATA_SERNO_LEN + num + 3)) { |
| 1689 | /* piv=0, assoc=lu, code_set=ACSII, designator=vendor */ |
| 1690 | rbuf[num + 0] = 2; |
| 1691 | rbuf[num + 3] = ATA_SERNO_LEN; |
| 1692 | num += 4; |
| 1693 | ata_id_string(args->id, (unsigned char *) rbuf + num, |
| 1694 | ATA_ID_SERNO_OFS, ATA_SERNO_LEN); |
| 1695 | num += ATA_SERNO_LEN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1696 | } |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1697 | if (buflen > (sat_model_serial_desc_len + num + 3)) { |
| 1698 | /* SAT defined lu model and serial numbers descriptor */ |
| 1699 | /* piv=0, assoc=lu, code_set=ACSII, designator=t10 vendor id */ |
| 1700 | rbuf[num + 0] = 2; |
| 1701 | rbuf[num + 1] = 1; |
| 1702 | rbuf[num + 3] = sat_model_serial_desc_len; |
| 1703 | num += 4; |
| 1704 | memcpy(rbuf + num, "ATA ", 8); |
| 1705 | num += 8; |
| 1706 | ata_id_string(args->id, (unsigned char *) rbuf + num, |
| 1707 | ATA_ID_PROD_OFS, ata_model_byte_len); |
| 1708 | num += ata_model_byte_len; |
| 1709 | ata_id_string(args->id, (unsigned char *) rbuf + num, |
| 1710 | ATA_ID_SERNO_OFS, ATA_SERNO_LEN); |
| 1711 | num += ATA_SERNO_LEN; |
| 1712 | } |
| 1713 | rbuf[3] = num - 4; /* page len (assume less than 256 bytes) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1714 | return 0; |
| 1715 | } |
| 1716 | |
| 1717 | /** |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 1718 | * ata_scsiop_noop - Command handler that simply returns success. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1719 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1720 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 1721 | * @buflen: Response buffer length. |
| 1722 | * |
| 1723 | * No operation. Simply returns success to caller, to indicate |
| 1724 | * that the caller should successfully complete this SCSI command. |
| 1725 | * |
| 1726 | * LOCKING: |
| 1727 | * spin_lock_irqsave(host_set lock) |
| 1728 | */ |
| 1729 | |
| 1730 | unsigned int ata_scsiop_noop(struct ata_scsi_args *args, u8 *rbuf, |
| 1731 | unsigned int buflen) |
| 1732 | { |
| 1733 | VPRINTK("ENTER\n"); |
| 1734 | return 0; |
| 1735 | } |
| 1736 | |
| 1737 | /** |
| 1738 | * ata_msense_push - Push data onto MODE SENSE data output buffer |
| 1739 | * @ptr_io: (input/output) Location to store more output data |
| 1740 | * @last: End of output data buffer |
| 1741 | * @buf: Pointer to BLOB being added to output buffer |
| 1742 | * @buflen: Length of BLOB |
| 1743 | * |
| 1744 | * Store MODE SENSE data on an output buffer. |
| 1745 | * |
| 1746 | * LOCKING: |
| 1747 | * None. |
| 1748 | */ |
| 1749 | |
| 1750 | static void ata_msense_push(u8 **ptr_io, const u8 *last, |
| 1751 | const u8 *buf, unsigned int buflen) |
| 1752 | { |
| 1753 | u8 *ptr = *ptr_io; |
| 1754 | |
| 1755 | if ((ptr + buflen - 1) > last) |
| 1756 | return; |
| 1757 | |
| 1758 | memcpy(ptr, buf, buflen); |
| 1759 | |
| 1760 | ptr += buflen; |
| 1761 | |
| 1762 | *ptr_io = ptr; |
| 1763 | } |
| 1764 | |
| 1765 | /** |
| 1766 | * ata_msense_caching - Simulate MODE SENSE caching info page |
| 1767 | * @id: device IDENTIFY data |
| 1768 | * @ptr_io: (input/output) Location to store more output data |
| 1769 | * @last: End of output data buffer |
| 1770 | * |
| 1771 | * Generate a caching info page, which conditionally indicates |
| 1772 | * write caching to the SCSI layer, depending on device |
| 1773 | * capabilities. |
| 1774 | * |
| 1775 | * LOCKING: |
| 1776 | * None. |
| 1777 | */ |
| 1778 | |
| 1779 | static unsigned int ata_msense_caching(u16 *id, u8 **ptr_io, |
| 1780 | const u8 *last) |
| 1781 | { |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1782 | u8 page[CACHE_MPAGE_LEN]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1783 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1784 | memcpy(page, def_cache_mpage, sizeof(page)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1785 | if (ata_id_wcache_enabled(id)) |
| 1786 | page[2] |= (1 << 2); /* write cache enable */ |
| 1787 | if (!ata_id_rahead_enabled(id)) |
| 1788 | page[12] |= (1 << 5); /* disable read ahead */ |
| 1789 | |
| 1790 | ata_msense_push(ptr_io, last, page, sizeof(page)); |
| 1791 | return sizeof(page); |
| 1792 | } |
| 1793 | |
| 1794 | /** |
| 1795 | * ata_msense_ctl_mode - Simulate MODE SENSE control mode page |
| 1796 | * @dev: Device associated with this MODE SENSE command |
| 1797 | * @ptr_io: (input/output) Location to store more output data |
| 1798 | * @last: End of output data buffer |
| 1799 | * |
| 1800 | * Generate a generic MODE SENSE control mode page. |
| 1801 | * |
| 1802 | * LOCKING: |
| 1803 | * None. |
| 1804 | */ |
| 1805 | |
| 1806 | static unsigned int ata_msense_ctl_mode(u8 **ptr_io, const u8 *last) |
| 1807 | { |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1808 | ata_msense_push(ptr_io, last, def_control_mpage, |
| 1809 | sizeof(def_control_mpage)); |
| 1810 | return sizeof(def_control_mpage); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1811 | } |
| 1812 | |
| 1813 | /** |
| 1814 | * ata_msense_rw_recovery - Simulate MODE SENSE r/w error recovery page |
| 1815 | * @dev: Device associated with this MODE SENSE command |
| 1816 | * @ptr_io: (input/output) Location to store more output data |
| 1817 | * @last: End of output data buffer |
| 1818 | * |
| 1819 | * Generate a generic MODE SENSE r/w error recovery page. |
| 1820 | * |
| 1821 | * LOCKING: |
| 1822 | * None. |
| 1823 | */ |
| 1824 | |
| 1825 | static unsigned int ata_msense_rw_recovery(u8 **ptr_io, const u8 *last) |
| 1826 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1827 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1828 | ata_msense_push(ptr_io, last, def_rw_recovery_mpage, |
| 1829 | sizeof(def_rw_recovery_mpage)); |
| 1830 | return sizeof(def_rw_recovery_mpage); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1831 | } |
| 1832 | |
Jens Axboe | 48bdc8e | 2006-01-30 16:09:35 +0100 | [diff] [blame] | 1833 | /* |
| 1834 | * We can turn this into a real blacklist if it's needed, for now just |
| 1835 | * blacklist any Maxtor BANC1G10 revision firmware |
| 1836 | */ |
| 1837 | static int ata_dev_supports_fua(u16 *id) |
| 1838 | { |
| 1839 | unsigned char model[41], fw[9]; |
| 1840 | |
Jeff Garzik | c3c013a | 2006-02-27 22:31:19 -0500 | [diff] [blame] | 1841 | if (!libata_fua) |
| 1842 | return 0; |
Jens Axboe | 48bdc8e | 2006-01-30 16:09:35 +0100 | [diff] [blame] | 1843 | if (!ata_id_has_fua(id)) |
| 1844 | return 0; |
| 1845 | |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 1846 | ata_id_c_string(id, model, ATA_ID_PROD_OFS, sizeof(model)); |
| 1847 | ata_id_c_string(id, fw, ATA_ID_FW_REV_OFS, sizeof(fw)); |
Jens Axboe | 48bdc8e | 2006-01-30 16:09:35 +0100 | [diff] [blame] | 1848 | |
Tejun Heo | 2e02671 | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 1849 | if (strcmp(model, "Maxtor")) |
Jens Axboe | 48bdc8e | 2006-01-30 16:09:35 +0100 | [diff] [blame] | 1850 | return 1; |
Tejun Heo | 2e02671 | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 1851 | if (strcmp(fw, "BANC1G10")) |
Jens Axboe | 48bdc8e | 2006-01-30 16:09:35 +0100 | [diff] [blame] | 1852 | return 1; |
| 1853 | |
| 1854 | return 0; /* blacklisted */ |
| 1855 | } |
| 1856 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1857 | /** |
| 1858 | * ata_scsiop_mode_sense - Simulate MODE SENSE 6, 10 commands |
| 1859 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1860 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 1861 | * @buflen: Response buffer length. |
| 1862 | * |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1863 | * Simulate MODE SENSE commands. Assume this is invoked for direct |
| 1864 | * access devices (e.g. disks) only. There should be no block |
| 1865 | * descriptor for other device types. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1866 | * |
| 1867 | * LOCKING: |
| 1868 | * spin_lock_irqsave(host_set lock) |
| 1869 | */ |
| 1870 | |
| 1871 | unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf, |
| 1872 | unsigned int buflen) |
| 1873 | { |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 1874 | struct ata_device *dev = args->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1875 | u8 *scsicmd = args->cmd->cmnd, *p, *last; |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1876 | const u8 sat_blk_desc[] = { |
| 1877 | 0, 0, 0, 0, /* number of blocks: sat unspecified */ |
| 1878 | 0, |
| 1879 | 0, 0x2, 0x0 /* block length: 512 bytes */ |
| 1880 | }; |
| 1881 | u8 pg, spg; |
| 1882 | unsigned int ebd, page_control, six_byte, output_len, alloc_len, minlen; |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 1883 | u8 dpofua; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1884 | |
| 1885 | VPRINTK("ENTER\n"); |
| 1886 | |
| 1887 | six_byte = (scsicmd[0] == MODE_SENSE); |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1888 | ebd = !(scsicmd[1] & 0x8); /* dbd bit inverted == edb */ |
| 1889 | /* |
| 1890 | * LLBA bit in msense(10) ignored (compliant) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1891 | */ |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1892 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1893 | page_control = scsicmd[2] >> 6; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1894 | switch (page_control) { |
| 1895 | case 0: /* current */ |
| 1896 | break; /* supported */ |
| 1897 | case 3: /* saved */ |
| 1898 | goto saving_not_supp; |
| 1899 | case 1: /* changeable */ |
| 1900 | case 2: /* defaults */ |
| 1901 | default: |
| 1902 | goto invalid_fld; |
| 1903 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1904 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1905 | if (six_byte) { |
| 1906 | output_len = 4 + (ebd ? 8 : 0); |
| 1907 | alloc_len = scsicmd[4]; |
| 1908 | } else { |
| 1909 | output_len = 8 + (ebd ? 8 : 0); |
| 1910 | alloc_len = (scsicmd[7] << 8) + scsicmd[8]; |
| 1911 | } |
| 1912 | minlen = (alloc_len < buflen) ? alloc_len : buflen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1913 | |
| 1914 | p = rbuf + output_len; |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1915 | last = rbuf + minlen - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1916 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1917 | pg = scsicmd[2] & 0x3f; |
| 1918 | spg = scsicmd[3]; |
| 1919 | /* |
| 1920 | * No mode subpages supported (yet) but asking for _all_ |
| 1921 | * subpages may be valid |
| 1922 | */ |
| 1923 | if (spg && (spg != ALL_SUB_MPAGES)) |
| 1924 | goto invalid_fld; |
| 1925 | |
| 1926 | switch(pg) { |
| 1927 | case RW_RECOVERY_MPAGE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1928 | output_len += ata_msense_rw_recovery(&p, last); |
| 1929 | break; |
| 1930 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1931 | case CACHE_MPAGE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1932 | output_len += ata_msense_caching(args->id, &p, last); |
| 1933 | break; |
| 1934 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1935 | case CONTROL_MPAGE: { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1936 | output_len += ata_msense_ctl_mode(&p, last); |
| 1937 | break; |
| 1938 | } |
| 1939 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1940 | case ALL_MPAGES: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1941 | output_len += ata_msense_rw_recovery(&p, last); |
| 1942 | output_len += ata_msense_caching(args->id, &p, last); |
| 1943 | output_len += ata_msense_ctl_mode(&p, last); |
| 1944 | break; |
| 1945 | |
| 1946 | default: /* invalid page code */ |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1947 | goto invalid_fld; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1948 | } |
| 1949 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1950 | if (minlen < 1) |
| 1951 | return 0; |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 1952 | |
| 1953 | dpofua = 0; |
Jens Axboe | 48bdc8e | 2006-01-30 16:09:35 +0100 | [diff] [blame] | 1954 | if (ata_dev_supports_fua(args->id) && dev->flags & ATA_DFLAG_LBA48 && |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 1955 | (!(dev->flags & ATA_DFLAG_PIO) || dev->multi_count)) |
| 1956 | dpofua = 1 << 4; |
| 1957 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1958 | if (six_byte) { |
| 1959 | output_len--; |
| 1960 | rbuf[0] = output_len; |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 1961 | if (minlen > 2) |
| 1962 | rbuf[2] |= dpofua; |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1963 | if (ebd) { |
| 1964 | if (minlen > 3) |
| 1965 | rbuf[3] = sizeof(sat_blk_desc); |
| 1966 | if (minlen > 11) |
| 1967 | memcpy(rbuf + 4, sat_blk_desc, |
| 1968 | sizeof(sat_blk_desc)); |
| 1969 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1970 | } else { |
| 1971 | output_len -= 2; |
| 1972 | rbuf[0] = output_len >> 8; |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1973 | if (minlen > 1) |
| 1974 | rbuf[1] = output_len; |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 1975 | if (minlen > 3) |
| 1976 | rbuf[3] |= dpofua; |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1977 | if (ebd) { |
| 1978 | if (minlen > 7) |
| 1979 | rbuf[7] = sizeof(sat_blk_desc); |
| 1980 | if (minlen > 15) |
| 1981 | memcpy(rbuf + 8, sat_blk_desc, |
| 1982 | sizeof(sat_blk_desc)); |
| 1983 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1984 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1985 | return 0; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1986 | |
| 1987 | invalid_fld: |
| 1988 | ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x24, 0x0); |
| 1989 | /* "Invalid field in cbd" */ |
| 1990 | return 1; |
| 1991 | |
| 1992 | saving_not_supp: |
| 1993 | ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x39, 0x0); |
| 1994 | /* "Saving parameters not supported" */ |
| 1995 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1996 | } |
| 1997 | |
| 1998 | /** |
| 1999 | * ata_scsiop_read_cap - Simulate READ CAPACITY[ 16] commands |
| 2000 | * @args: device IDENTIFY data / SCSI command of interest. |
| 2001 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 2002 | * @buflen: Response buffer length. |
| 2003 | * |
| 2004 | * Simulate READ CAPACITY commands. |
| 2005 | * |
| 2006 | * LOCKING: |
| 2007 | * spin_lock_irqsave(host_set lock) |
| 2008 | */ |
| 2009 | |
| 2010 | unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf, |
| 2011 | unsigned int buflen) |
| 2012 | { |
| 2013 | u64 n_sectors; |
| 2014 | u32 tmp; |
| 2015 | |
| 2016 | VPRINTK("ENTER\n"); |
| 2017 | |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2018 | if (ata_id_has_lba(args->id)) { |
| 2019 | if (ata_id_has_lba48(args->id)) |
| 2020 | n_sectors = ata_id_u64(args->id, 100); |
| 2021 | else |
| 2022 | n_sectors = ata_id_u32(args->id, 60); |
| 2023 | } else { |
| 2024 | /* CHS default translation */ |
| 2025 | n_sectors = args->id[1] * args->id[3] * args->id[6]; |
| 2026 | |
| 2027 | if (ata_id_current_chs_valid(args->id)) |
| 2028 | /* CHS current translation */ |
| 2029 | n_sectors = ata_id_u32(args->id, 57); |
| 2030 | } |
| 2031 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2032 | n_sectors--; /* ATA TotalUserSectors - 1 */ |
| 2033 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2034 | if (args->cmd->cmnd[0] == READ_CAPACITY) { |
Philip Pokorny | 0c144d0 | 2005-05-28 01:24:47 -0700 | [diff] [blame] | 2035 | if( n_sectors >= 0xffffffffULL ) |
| 2036 | tmp = 0xffffffff ; /* Return max count on overflow */ |
| 2037 | else |
| 2038 | tmp = n_sectors ; |
| 2039 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2040 | /* sector count, 32-bit */ |
| 2041 | rbuf[0] = tmp >> (8 * 3); |
| 2042 | rbuf[1] = tmp >> (8 * 2); |
| 2043 | rbuf[2] = tmp >> (8 * 1); |
| 2044 | rbuf[3] = tmp; |
| 2045 | |
| 2046 | /* sector size */ |
| 2047 | tmp = ATA_SECT_SIZE; |
| 2048 | rbuf[6] = tmp >> 8; |
| 2049 | rbuf[7] = tmp; |
| 2050 | |
| 2051 | } else { |
| 2052 | /* sector count, 64-bit */ |
Philip Pokorny | 0c144d0 | 2005-05-28 01:24:47 -0700 | [diff] [blame] | 2053 | tmp = n_sectors >> (8 * 4); |
| 2054 | rbuf[2] = tmp >> (8 * 3); |
| 2055 | rbuf[3] = tmp >> (8 * 2); |
| 2056 | rbuf[4] = tmp >> (8 * 1); |
| 2057 | rbuf[5] = tmp; |
| 2058 | tmp = n_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2059 | rbuf[6] = tmp >> (8 * 3); |
| 2060 | rbuf[7] = tmp >> (8 * 2); |
| 2061 | rbuf[8] = tmp >> (8 * 1); |
| 2062 | rbuf[9] = tmp; |
| 2063 | |
| 2064 | /* sector size */ |
| 2065 | tmp = ATA_SECT_SIZE; |
| 2066 | rbuf[12] = tmp >> 8; |
| 2067 | rbuf[13] = tmp; |
| 2068 | } |
| 2069 | |
| 2070 | return 0; |
| 2071 | } |
| 2072 | |
| 2073 | /** |
| 2074 | * ata_scsiop_report_luns - Simulate REPORT LUNS command |
| 2075 | * @args: device IDENTIFY data / SCSI command of interest. |
| 2076 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 2077 | * @buflen: Response buffer length. |
| 2078 | * |
| 2079 | * Simulate REPORT LUNS command. |
| 2080 | * |
| 2081 | * LOCKING: |
| 2082 | * spin_lock_irqsave(host_set lock) |
| 2083 | */ |
| 2084 | |
| 2085 | unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf, |
| 2086 | unsigned int buflen) |
| 2087 | { |
| 2088 | VPRINTK("ENTER\n"); |
| 2089 | rbuf[3] = 8; /* just one lun, LUN 0, size 8 bytes */ |
| 2090 | |
| 2091 | return 0; |
| 2092 | } |
| 2093 | |
| 2094 | /** |
Douglas Gilbert | 845c583 | 2005-10-09 08:55:41 -0400 | [diff] [blame] | 2095 | * ata_scsi_set_sense - Set SCSI sense data and status |
| 2096 | * @cmd: SCSI request to be handled |
| 2097 | * @sk: SCSI-defined sense key |
| 2098 | * @asc: SCSI-defined additional sense code |
| 2099 | * @ascq: SCSI-defined additional sense code qualifier |
| 2100 | * |
| 2101 | * Helper function that builds a valid fixed format, current |
| 2102 | * response code and the given sense key (sk), additional sense |
| 2103 | * code (asc) and additional sense code qualifier (ascq) with |
| 2104 | * a SCSI command status of %SAM_STAT_CHECK_CONDITION and |
| 2105 | * DRIVER_SENSE set in the upper bits of scsi_cmnd::result . |
| 2106 | * |
| 2107 | * LOCKING: |
| 2108 | * Not required |
| 2109 | */ |
| 2110 | |
| 2111 | void ata_scsi_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq) |
| 2112 | { |
| 2113 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
| 2114 | |
| 2115 | cmd->sense_buffer[0] = 0x70; /* fixed format, current */ |
| 2116 | cmd->sense_buffer[2] = sk; |
| 2117 | cmd->sense_buffer[7] = 18 - 8; /* additional sense length */ |
| 2118 | cmd->sense_buffer[12] = asc; |
| 2119 | cmd->sense_buffer[13] = ascq; |
| 2120 | } |
| 2121 | |
| 2122 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2123 | * ata_scsi_badcmd - End a SCSI request with an error |
| 2124 | * @cmd: SCSI request to be handled |
| 2125 | * @done: SCSI command completion function |
| 2126 | * @asc: SCSI-defined additional sense code |
| 2127 | * @ascq: SCSI-defined additional sense code qualifier |
| 2128 | * |
| 2129 | * Helper function that completes a SCSI command with |
| 2130 | * %SAM_STAT_CHECK_CONDITION, with a sense key %ILLEGAL_REQUEST |
| 2131 | * and the specified additional sense codes. |
| 2132 | * |
| 2133 | * LOCKING: |
| 2134 | * spin_lock_irqsave(host_set lock) |
| 2135 | */ |
| 2136 | |
| 2137 | void ata_scsi_badcmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), u8 asc, u8 ascq) |
| 2138 | { |
| 2139 | DPRINTK("ENTER\n"); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2140 | ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, asc, ascq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2141 | |
| 2142 | done(cmd); |
| 2143 | } |
| 2144 | |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 2145 | static void atapi_sense_complete(struct ata_queued_cmd *qc) |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2146 | { |
Albert Lee | a22e2eb | 2005-12-05 15:38:02 +0800 | [diff] [blame] | 2147 | if (qc->err_mask && ((qc->err_mask & AC_ERR_DEV) == 0)) |
Jeff Garzik | c6e6e666 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2148 | /* FIXME: not quite right; we don't want the |
| 2149 | * translation of taskfile registers into |
| 2150 | * a sense descriptors, since that's only |
| 2151 | * correct for ATA, not ATAPI |
| 2152 | */ |
| 2153 | ata_gen_ata_desc_sense(qc); |
| 2154 | |
| 2155 | qc->scsidone(qc->scsicmd); |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 2156 | ata_qc_free(qc); |
Jeff Garzik | c6e6e666 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2157 | } |
| 2158 | |
| 2159 | /* is it pointless to prefer PIO for "safety reasons"? */ |
| 2160 | static inline int ata_pio_use_silly(struct ata_port *ap) |
| 2161 | { |
| 2162 | return (ap->flags & ATA_FLAG_PIO_DMA); |
| 2163 | } |
| 2164 | |
| 2165 | static void atapi_request_sense(struct ata_queued_cmd *qc) |
| 2166 | { |
| 2167 | struct ata_port *ap = qc->ap; |
| 2168 | struct scsi_cmnd *cmd = qc->scsicmd; |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2169 | |
| 2170 | DPRINTK("ATAPI request sense\n"); |
| 2171 | |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2172 | /* FIXME: is this needed? */ |
| 2173 | memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer)); |
| 2174 | |
Jeff Garzik | c6e6e666 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2175 | ap->ops->tf_read(ap, &qc->tf); |
| 2176 | |
| 2177 | /* fill these in, for the case where they are -not- overwritten */ |
| 2178 | cmd->sense_buffer[0] = 0x70; |
| 2179 | cmd->sense_buffer[2] = qc->tf.feature >> 4; |
| 2180 | |
| 2181 | ata_qc_reinit(qc); |
| 2182 | |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2183 | ata_sg_init_one(qc, cmd->sense_buffer, sizeof(cmd->sense_buffer)); |
| 2184 | qc->dma_dir = DMA_FROM_DEVICE; |
| 2185 | |
Tejun Heo | 6e7846e | 2006-02-12 23:32:58 +0900 | [diff] [blame] | 2186 | memset(&qc->cdb, 0, qc->dev->cdb_len); |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2187 | qc->cdb[0] = REQUEST_SENSE; |
| 2188 | qc->cdb[4] = SCSI_SENSE_BUFFERSIZE; |
| 2189 | |
| 2190 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 2191 | qc->tf.command = ATA_CMD_PACKET; |
| 2192 | |
Jeff Garzik | c6e6e666 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2193 | if (ata_pio_use_silly(ap)) { |
| 2194 | qc->tf.protocol = ATA_PROT_ATAPI_DMA; |
| 2195 | qc->tf.feature |= ATAPI_PKT_DMA; |
| 2196 | } else { |
| 2197 | qc->tf.protocol = ATA_PROT_ATAPI; |
| 2198 | qc->tf.lbam = (8 * 1024) & 0xff; |
| 2199 | qc->tf.lbah = (8 * 1024) >> 8; |
| 2200 | } |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2201 | qc->nbytes = SCSI_SENSE_BUFFERSIZE; |
| 2202 | |
Jeff Garzik | c6e6e666 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2203 | qc->complete_fn = atapi_sense_complete; |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2204 | |
Tejun Heo | 9a3d9eb | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 2205 | qc->err_mask = ata_qc_issue(qc); |
| 2206 | if (qc->err_mask) |
Albert Lee | a22e2eb | 2005-12-05 15:38:02 +0800 | [diff] [blame] | 2207 | ata_qc_complete(qc); |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2208 | |
| 2209 | DPRINTK("EXIT\n"); |
| 2210 | } |
| 2211 | |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 2212 | static void atapi_qc_complete(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2213 | { |
| 2214 | struct scsi_cmnd *cmd = qc->scsicmd; |
Albert Lee | a22e2eb | 2005-12-05 15:38:02 +0800 | [diff] [blame] | 2215 | unsigned int err_mask = qc->err_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2216 | |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 2217 | VPRINTK("ENTER, err_mask 0x%X\n", err_mask); |
Jeff Garzik | e12669e | 2005-10-05 18:39:23 -0400 | [diff] [blame] | 2218 | |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 2219 | if (unlikely(err_mask & AC_ERR_DEV)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2220 | cmd->result = SAM_STAT_CHECK_CONDITION; |
Jeff Garzik | c6e6e666 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2221 | atapi_request_sense(qc); |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 2222 | return; |
Jeff Garzik | e12669e | 2005-10-05 18:39:23 -0400 | [diff] [blame] | 2223 | } |
| 2224 | |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 2225 | else if (unlikely(err_mask)) |
| 2226 | /* FIXME: not quite right; we don't want the |
| 2227 | * translation of taskfile registers into |
| 2228 | * a sense descriptors, since that's only |
| 2229 | * correct for ATA, not ATAPI |
| 2230 | */ |
| 2231 | ata_gen_ata_desc_sense(qc); |
| 2232 | |
Jeff Garzik | e12669e | 2005-10-05 18:39:23 -0400 | [diff] [blame] | 2233 | else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2234 | u8 *scsicmd = cmd->cmnd; |
| 2235 | |
Tony Battersby | fd71da4 | 2005-12-21 16:35:44 -0500 | [diff] [blame] | 2236 | if ((scsicmd[0] == INQUIRY) && ((scsicmd[1] & 0x03) == 0)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2237 | u8 *buf = NULL; |
| 2238 | unsigned int buflen; |
| 2239 | |
| 2240 | buflen = ata_scsi_rbuf_get(cmd, &buf); |
Jeff Garzik | a15dbeb | 2005-10-05 15:02:14 -0400 | [diff] [blame] | 2241 | |
| 2242 | /* ATAPI devices typically report zero for their SCSI version, |
| 2243 | * and sometimes deviate from the spec WRT response data |
| 2244 | * format. If SCSI version is reported as zero like normal, |
| 2245 | * then we make the following fixups: 1) Fake MMC-5 version, |
| 2246 | * to indicate to the Linux scsi midlayer this is a modern |
| 2247 | * device. 2) Ensure response data format / ATAPI information |
| 2248 | * are always correct. |
| 2249 | */ |
Jeff Garzik | a15dbeb | 2005-10-05 15:02:14 -0400 | [diff] [blame] | 2250 | if (buf[2] == 0) { |
| 2251 | buf[2] = 0x5; |
| 2252 | buf[3] = 0x32; |
| 2253 | } |
| 2254 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2255 | ata_scsi_rbuf_put(cmd, buf); |
| 2256 | } |
Jeff Garzik | a15dbeb | 2005-10-05 15:02:14 -0400 | [diff] [blame] | 2257 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2258 | cmd->result = SAM_STAT_GOOD; |
| 2259 | } |
| 2260 | |
| 2261 | qc->scsidone(cmd); |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 2262 | ata_qc_free(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2263 | } |
| 2264 | /** |
| 2265 | * atapi_xlat - Initialize PACKET taskfile |
| 2266 | * @qc: command structure to be initialized |
| 2267 | * @scsicmd: SCSI CDB associated with this PACKET command |
| 2268 | * |
| 2269 | * LOCKING: |
| 2270 | * spin_lock_irqsave(host_set lock) |
| 2271 | * |
| 2272 | * RETURNS: |
| 2273 | * Zero on success, non-zero on failure. |
| 2274 | */ |
| 2275 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 2276 | 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] | 2277 | { |
| 2278 | struct scsi_cmnd *cmd = qc->scsicmd; |
| 2279 | struct ata_device *dev = qc->dev; |
| 2280 | int using_pio = (dev->flags & ATA_DFLAG_PIO); |
| be7db05 | 2005-04-17 15:26:13 -0500 | [diff] [blame] | 2281 | int nodata = (cmd->sc_data_direction == DMA_NONE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2282 | |
| 2283 | if (!using_pio) |
| 2284 | /* Check whether ATAPI DMA is safe */ |
| 2285 | if (ata_check_atapi_dma(qc)) |
| 2286 | using_pio = 1; |
| 2287 | |
Tejun Heo | 6e7846e | 2006-02-12 23:32:58 +0900 | [diff] [blame] | 2288 | memcpy(&qc->cdb, scsicmd, dev->cdb_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2289 | |
| 2290 | qc->complete_fn = atapi_qc_complete; |
| 2291 | |
| 2292 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| be7db05 | 2005-04-17 15:26:13 -0500 | [diff] [blame] | 2293 | if (cmd->sc_data_direction == DMA_TO_DEVICE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2294 | qc->tf.flags |= ATA_TFLAG_WRITE; |
| 2295 | DPRINTK("direction: write\n"); |
| 2296 | } |
| 2297 | |
| 2298 | qc->tf.command = ATA_CMD_PACKET; |
| 2299 | |
| 2300 | /* no data, or PIO data xfer */ |
| 2301 | if (using_pio || nodata) { |
| 2302 | if (nodata) |
| 2303 | qc->tf.protocol = ATA_PROT_ATAPI_NODATA; |
| 2304 | else |
| 2305 | qc->tf.protocol = ATA_PROT_ATAPI; |
| 2306 | qc->tf.lbam = (8 * 1024) & 0xff; |
| 2307 | qc->tf.lbah = (8 * 1024) >> 8; |
| 2308 | } |
| 2309 | |
| 2310 | /* DMA data xfer */ |
| 2311 | else { |
| 2312 | qc->tf.protocol = ATA_PROT_ATAPI_DMA; |
| 2313 | qc->tf.feature |= ATAPI_PKT_DMA; |
| 2314 | |
| 2315 | #ifdef ATAPI_ENABLE_DMADIR |
| 2316 | /* some SATA bridges need us to indicate data xfer direction */ |
| be7db05 | 2005-04-17 15:26:13 -0500 | [diff] [blame] | 2317 | if (cmd->sc_data_direction != DMA_TO_DEVICE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2318 | qc->tf.feature |= ATAPI_DMADIR; |
| 2319 | #endif |
| 2320 | } |
| 2321 | |
| 2322 | qc->nbytes = cmd->bufflen; |
| 2323 | |
| 2324 | return 0; |
| 2325 | } |
| 2326 | |
| 2327 | /** |
| 2328 | * ata_scsi_find_dev - lookup ata_device from scsi_cmnd |
| 2329 | * @ap: ATA port to which the device is attached |
| 2330 | * @scsidev: SCSI device from which we derive the ATA device |
| 2331 | * |
| 2332 | * Given various information provided in struct scsi_cmnd, |
| 2333 | * map that onto an ATA bus, and using that mapping |
| 2334 | * determine which ata_device is associated with the |
| 2335 | * SCSI command to be sent. |
| 2336 | * |
| 2337 | * LOCKING: |
| 2338 | * spin_lock_irqsave(host_set lock) |
| 2339 | * |
| 2340 | * RETURNS: |
| 2341 | * Associated ATA device, or %NULL if not found. |
| 2342 | */ |
| 2343 | |
| 2344 | static struct ata_device * |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 2345 | 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] | 2346 | { |
| 2347 | struct ata_device *dev; |
| 2348 | |
| 2349 | /* skip commands not addressed to targets we simulate */ |
| 2350 | if (likely(scsidev->id < ATA_MAX_DEVICES)) |
| 2351 | dev = &ap->device[scsidev->id]; |
| 2352 | else |
| 2353 | return NULL; |
| 2354 | |
| 2355 | if (unlikely((scsidev->channel != 0) || |
| 2356 | (scsidev->lun != 0))) |
| 2357 | return NULL; |
| 2358 | |
| 2359 | if (unlikely(!ata_dev_present(dev))) |
| 2360 | return NULL; |
| 2361 | |
Jeff Garzik | 5063019 | 2005-12-13 02:29:45 -0500 | [diff] [blame] | 2362 | if (!atapi_enabled || (ap->flags & ATA_FLAG_NO_ATAPI)) { |
| 2363 | if (unlikely(dev->class == ATA_DEV_ATAPI)) { |
| 2364 | printk(KERN_WARNING "ata%u(%u): WARNING: ATAPI is %s, device ignored.\n", |
| 2365 | ap->id, dev->devno, atapi_enabled ? "not supported with this driver" : "disabled"); |
Jeff Garzik | 1623c81 | 2005-08-30 03:37:42 -0400 | [diff] [blame] | 2366 | return NULL; |
Jeff Garzik | 5063019 | 2005-12-13 02:29:45 -0500 | [diff] [blame] | 2367 | } |
Jeff Garzik | 1623c81 | 2005-08-30 03:37:42 -0400 | [diff] [blame] | 2368 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2369 | |
| 2370 | return dev; |
| 2371 | } |
| 2372 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2373 | /* |
| 2374 | * ata_scsi_map_proto - Map pass-thru protocol value to taskfile value. |
| 2375 | * @byte1: Byte 1 from pass-thru CDB. |
| 2376 | * |
| 2377 | * RETURNS: |
| 2378 | * ATA_PROT_UNKNOWN if mapping failed/unimplemented, protocol otherwise. |
| 2379 | */ |
| 2380 | static u8 |
| 2381 | ata_scsi_map_proto(u8 byte1) |
| 2382 | { |
| 2383 | switch((byte1 & 0x1e) >> 1) { |
| 2384 | case 3: /* Non-data */ |
| 2385 | return ATA_PROT_NODATA; |
| 2386 | |
| 2387 | case 6: /* DMA */ |
| 2388 | return ATA_PROT_DMA; |
| 2389 | |
| 2390 | case 4: /* PIO Data-in */ |
| 2391 | case 5: /* PIO Data-out */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2392 | return ATA_PROT_PIO; |
| 2393 | |
| 2394 | case 10: /* Device Reset */ |
| 2395 | case 0: /* Hard Reset */ |
| 2396 | case 1: /* SRST */ |
| 2397 | case 2: /* Bus Idle */ |
| 2398 | case 7: /* Packet */ |
| 2399 | case 8: /* DMA Queued */ |
| 2400 | case 9: /* Device Diagnostic */ |
| 2401 | case 11: /* UDMA Data-in */ |
| 2402 | case 12: /* UDMA Data-Out */ |
| 2403 | case 13: /* FPDMA */ |
| 2404 | default: /* Reserved */ |
| 2405 | break; |
| 2406 | } |
| 2407 | |
| 2408 | return ATA_PROT_UNKNOWN; |
| 2409 | } |
| 2410 | |
| 2411 | /** |
| 2412 | * ata_scsi_pass_thru - convert ATA pass-thru CDB to taskfile |
| 2413 | * @qc: command structure to be initialized |
Randy Dunlap | 8e8b77d | 2005-11-01 21:29:27 -0800 | [diff] [blame] | 2414 | * @scsicmd: SCSI command to convert |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2415 | * |
| 2416 | * Handles either 12 or 16-byte versions of the CDB. |
| 2417 | * |
| 2418 | * RETURNS: |
| 2419 | * Zero on success, non-zero on failure. |
| 2420 | */ |
| 2421 | static unsigned int |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2422 | ata_scsi_pass_thru(struct ata_queued_cmd *qc, const u8 *scsicmd) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2423 | { |
| 2424 | struct ata_taskfile *tf = &(qc->tf); |
| 2425 | struct scsi_cmnd *cmd = qc->scsicmd; |
| 2426 | |
| 2427 | if ((tf->protocol = ata_scsi_map_proto(scsicmd[1])) == ATA_PROT_UNKNOWN) |
Tejun Heo | 9a40525 | 2005-12-02 11:49:11 +0900 | [diff] [blame] | 2428 | goto invalid_fld; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2429 | |
Albert Lee | f59b0cf | 2006-03-16 17:59:22 +0800 | [diff] [blame] | 2430 | if (scsicmd[1] & 0xe0) |
| 2431 | /* PIO multi not supported yet */ |
| 2432 | goto invalid_fld; |
| 2433 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2434 | /* |
| 2435 | * 12 and 16 byte CDBs use different offsets to |
| 2436 | * provide the various register values. |
| 2437 | */ |
| 2438 | if (scsicmd[0] == ATA_16) { |
| 2439 | /* |
| 2440 | * 16-byte CDB - may contain extended commands. |
| 2441 | * |
| 2442 | * If that is the case, copy the upper byte register values. |
| 2443 | */ |
| 2444 | if (scsicmd[1] & 0x01) { |
| 2445 | tf->hob_feature = scsicmd[3]; |
| 2446 | tf->hob_nsect = scsicmd[5]; |
| 2447 | tf->hob_lbal = scsicmd[7]; |
| 2448 | tf->hob_lbam = scsicmd[9]; |
| 2449 | tf->hob_lbah = scsicmd[11]; |
| 2450 | tf->flags |= ATA_TFLAG_LBA48; |
| 2451 | } else |
| 2452 | tf->flags &= ~ATA_TFLAG_LBA48; |
| 2453 | |
| 2454 | /* |
| 2455 | * Always copy low byte, device and command registers. |
| 2456 | */ |
| 2457 | tf->feature = scsicmd[4]; |
| 2458 | tf->nsect = scsicmd[6]; |
| 2459 | tf->lbal = scsicmd[8]; |
| 2460 | tf->lbam = scsicmd[10]; |
| 2461 | tf->lbah = scsicmd[12]; |
| 2462 | tf->device = scsicmd[13]; |
| 2463 | tf->command = scsicmd[14]; |
| 2464 | } else { |
| 2465 | /* |
| 2466 | * 12-byte CDB - incapable of extended commands. |
| 2467 | */ |
| 2468 | tf->flags &= ~ATA_TFLAG_LBA48; |
| 2469 | |
| 2470 | tf->feature = scsicmd[3]; |
| 2471 | tf->nsect = scsicmd[4]; |
| 2472 | tf->lbal = scsicmd[5]; |
| 2473 | tf->lbam = scsicmd[6]; |
| 2474 | tf->lbah = scsicmd[7]; |
| 2475 | tf->device = scsicmd[8]; |
| 2476 | tf->command = scsicmd[9]; |
| 2477 | } |
Mark Lord | dcc2d1e | 2005-11-13 16:22:06 -0500 | [diff] [blame] | 2478 | /* |
| 2479 | * If slave is possible, enforce correct master/slave bit |
| 2480 | */ |
| 2481 | if (qc->ap->flags & ATA_FLAG_SLAVE_POSS) |
| 2482 | tf->device = qc->dev->devno ? |
| 2483 | tf->device | ATA_DEV1 : tf->device & ~ATA_DEV1; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2484 | |
| 2485 | /* |
| 2486 | * Filter SET_FEATURES - XFER MODE command -- otherwise, |
| 2487 | * SET_FEATURES - XFER MODE must be preceded/succeeded |
| 2488 | * by an update to hardware-specific registers for each |
| 2489 | * controller (i.e. the reason for ->set_piomode(), |
| 2490 | * ->set_dmamode(), and ->post_set_mode() hooks). |
| 2491 | */ |
| 2492 | if ((tf->command == ATA_CMD_SET_FEATURES) |
| 2493 | && (tf->feature == SETFEATURES_XFER)) |
Tejun Heo | 9a40525 | 2005-12-02 11:49:11 +0900 | [diff] [blame] | 2494 | goto invalid_fld; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2495 | |
| 2496 | /* |
| 2497 | * Set flags so that all registers will be written, |
| 2498 | * and pass on write indication (used for PIO/DMA |
| 2499 | * setup.) |
| 2500 | */ |
| 2501 | tf->flags |= (ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE); |
| 2502 | |
Jeff Garzik | 0274aa2 | 2005-06-22 13:50:56 -0400 | [diff] [blame] | 2503 | if (cmd->sc_data_direction == DMA_TO_DEVICE) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2504 | tf->flags |= ATA_TFLAG_WRITE; |
| 2505 | |
| 2506 | /* |
| 2507 | * Set transfer length. |
| 2508 | * |
| 2509 | * TODO: find out if we need to do more here to |
| 2510 | * cover scatter/gather case. |
| 2511 | */ |
| 2512 | qc->nsect = cmd->bufflen / ATA_SECT_SIZE; |
| 2513 | |
| 2514 | return 0; |
Tejun Heo | 9a40525 | 2005-12-02 11:49:11 +0900 | [diff] [blame] | 2515 | |
| 2516 | invalid_fld: |
| 2517 | ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x24, 0x00); |
| 2518 | /* "Invalid field in cdb" */ |
| 2519 | return 1; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2520 | } |
| 2521 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2522 | /** |
| 2523 | * ata_get_xlat_func - check if SCSI to ATA translation is possible |
| 2524 | * @dev: ATA device |
| 2525 | * @cmd: SCSI command opcode to consider |
| 2526 | * |
| 2527 | * Look up the SCSI command given, and determine whether the |
| 2528 | * SCSI command is to be translated or simulated. |
| 2529 | * |
| 2530 | * RETURNS: |
| 2531 | * Pointer to translation function if possible, %NULL if not. |
| 2532 | */ |
| 2533 | |
| 2534 | static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd) |
| 2535 | { |
| 2536 | switch (cmd) { |
| 2537 | case READ_6: |
| 2538 | case READ_10: |
| 2539 | case READ_16: |
| 2540 | |
| 2541 | case WRITE_6: |
| 2542 | case WRITE_10: |
| 2543 | case WRITE_16: |
| 2544 | return ata_scsi_rw_xlat; |
| 2545 | |
| 2546 | case SYNCHRONIZE_CACHE: |
| 2547 | if (ata_try_flush_cache(dev)) |
| 2548 | return ata_scsi_flush_xlat; |
| 2549 | break; |
| 2550 | |
| 2551 | case VERIFY: |
| 2552 | case VERIFY_16: |
| 2553 | return ata_scsi_verify_xlat; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2554 | |
| 2555 | case ATA_12: |
| 2556 | case ATA_16: |
| 2557 | return ata_scsi_pass_thru; |
Jeff Garzik | da61396 | 2005-08-29 19:01:43 -0400 | [diff] [blame] | 2558 | |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 2559 | case START_STOP: |
| 2560 | return ata_scsi_start_stop_xlat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2561 | } |
| 2562 | |
| 2563 | return NULL; |
| 2564 | } |
| 2565 | |
| 2566 | /** |
| 2567 | * ata_scsi_dump_cdb - dump SCSI command contents to dmesg |
| 2568 | * @ap: ATA port to which the command was being sent |
| 2569 | * @cmd: SCSI command to dump |
| 2570 | * |
| 2571 | * Prints the contents of a SCSI command via printk(). |
| 2572 | */ |
| 2573 | |
| 2574 | static inline void ata_scsi_dump_cdb(struct ata_port *ap, |
| 2575 | struct scsi_cmnd *cmd) |
| 2576 | { |
| 2577 | #ifdef ATA_DEBUG |
| 2578 | struct scsi_device *scsidev = cmd->device; |
| 2579 | u8 *scsicmd = cmd->cmnd; |
| 2580 | |
| 2581 | DPRINTK("CDB (%u:%d,%d,%d) %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", |
| 2582 | ap->id, |
| 2583 | scsidev->channel, scsidev->id, scsidev->lun, |
| 2584 | scsicmd[0], scsicmd[1], scsicmd[2], scsicmd[3], |
| 2585 | scsicmd[4], scsicmd[5], scsicmd[6], scsicmd[7], |
| 2586 | scsicmd[8]); |
| 2587 | #endif |
| 2588 | } |
| 2589 | |
| 2590 | /** |
| 2591 | * ata_scsi_queuecmd - Issue SCSI cdb to libata-managed device |
| 2592 | * @cmd: SCSI command to be sent |
| 2593 | * @done: Completion function, called when command is complete |
| 2594 | * |
| 2595 | * In some cases, this function translates SCSI commands into |
| 2596 | * ATA taskfiles, and queues the taskfiles to be sent to |
| 2597 | * hardware. In other cases, this function simulates a |
| 2598 | * SCSI device by evaluating and responding to certain |
| 2599 | * SCSI commands. This creates the overall effect of |
| 2600 | * ATA and ATAPI devices appearing as SCSI devices. |
| 2601 | * |
| 2602 | * LOCKING: |
| 2603 | * Releases scsi-layer-held lock, and obtains host_set lock. |
| 2604 | * |
| 2605 | * RETURNS: |
| 2606 | * Zero. |
| 2607 | */ |
| 2608 | |
| 2609 | int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)) |
| 2610 | { |
| 2611 | struct ata_port *ap; |
| 2612 | struct ata_device *dev; |
| 2613 | struct scsi_device *scsidev = cmd->device; |
Jeff Garzik | 005a5a0 | 2005-10-30 23:31:48 -0500 | [diff] [blame] | 2614 | struct Scsi_Host *shost = scsidev->host; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2615 | |
Jeff Garzik | 005a5a0 | 2005-10-30 23:31:48 -0500 | [diff] [blame] | 2616 | ap = (struct ata_port *) &shost->hostdata[0]; |
| 2617 | |
| 2618 | spin_unlock(shost->host_lock); |
| 2619 | spin_lock(&ap->host_set->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2620 | |
| 2621 | ata_scsi_dump_cdb(ap, cmd); |
| 2622 | |
| 2623 | dev = ata_scsi_find_dev(ap, scsidev); |
| 2624 | if (unlikely(!dev)) { |
| 2625 | cmd->result = (DID_BAD_TARGET << 16); |
| 2626 | done(cmd); |
| 2627 | goto out_unlock; |
| 2628 | } |
| 2629 | |
| 2630 | if (dev->class == ATA_DEV_ATA) { |
| 2631 | ata_xlat_func_t xlat_func = ata_get_xlat_func(dev, |
| 2632 | cmd->cmnd[0]); |
| 2633 | |
| 2634 | if (xlat_func) |
| 2635 | ata_scsi_translate(ap, dev, cmd, done, xlat_func); |
| 2636 | else |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 2637 | ata_scsi_simulate(ap, dev, cmd, done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2638 | } else |
| 2639 | ata_scsi_translate(ap, dev, cmd, done, atapi_xlat); |
| 2640 | |
| 2641 | out_unlock: |
Jeff Garzik | 005a5a0 | 2005-10-30 23:31:48 -0500 | [diff] [blame] | 2642 | spin_unlock(&ap->host_set->lock); |
| 2643 | spin_lock(shost->host_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2644 | return 0; |
| 2645 | } |
| 2646 | |
| 2647 | /** |
| 2648 | * ata_scsi_simulate - simulate SCSI command on ATA device |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 2649 | * @ap: port the device is connected to |
| 2650 | * @dev: the target device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2651 | * @cmd: SCSI command being sent to device. |
| 2652 | * @done: SCSI command completion function. |
| 2653 | * |
| 2654 | * Interprets and directly executes a select list of SCSI commands |
| 2655 | * that can be handled internally. |
| 2656 | * |
| 2657 | * LOCKING: |
| 2658 | * spin_lock_irqsave(host_set lock) |
| 2659 | */ |
| 2660 | |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 2661 | void ata_scsi_simulate(struct ata_port *ap, struct ata_device *dev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2662 | struct scsi_cmnd *cmd, |
| 2663 | void (*done)(struct scsi_cmnd *)) |
| 2664 | { |
| 2665 | struct ata_scsi_args args; |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 2666 | const u8 *scsicmd = cmd->cmnd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2667 | |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 2668 | args.ap = ap; |
| 2669 | args.dev = dev; |
| 2670 | args.id = dev->id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2671 | args.cmd = cmd; |
| 2672 | args.done = done; |
| 2673 | |
| 2674 | switch(scsicmd[0]) { |
| 2675 | /* no-op's, complete with success */ |
| 2676 | case SYNCHRONIZE_CACHE: |
| 2677 | case REZERO_UNIT: |
| 2678 | case SEEK_6: |
| 2679 | case SEEK_10: |
| 2680 | case TEST_UNIT_READY: |
| 2681 | case FORMAT_UNIT: /* FIXME: correct? */ |
| 2682 | case SEND_DIAGNOSTIC: /* FIXME: correct? */ |
| 2683 | ata_scsi_rbuf_fill(&args, ata_scsiop_noop); |
| 2684 | break; |
| 2685 | |
| 2686 | case INQUIRY: |
| 2687 | if (scsicmd[1] & 2) /* is CmdDt set? */ |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2688 | ata_scsi_invalid_field(cmd, done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2689 | else if ((scsicmd[1] & 1) == 0) /* is EVPD clear? */ |
| 2690 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_std); |
| 2691 | else if (scsicmd[2] == 0x00) |
| 2692 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_00); |
| 2693 | else if (scsicmd[2] == 0x80) |
| 2694 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_80); |
| 2695 | else if (scsicmd[2] == 0x83) |
| 2696 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_83); |
| 2697 | else |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2698 | ata_scsi_invalid_field(cmd, done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2699 | break; |
| 2700 | |
| 2701 | case MODE_SENSE: |
| 2702 | case MODE_SENSE_10: |
| 2703 | ata_scsi_rbuf_fill(&args, ata_scsiop_mode_sense); |
| 2704 | break; |
| 2705 | |
| 2706 | case MODE_SELECT: /* unconditionally return */ |
| 2707 | case MODE_SELECT_10: /* bad-field-in-cdb */ |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2708 | ata_scsi_invalid_field(cmd, done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2709 | break; |
| 2710 | |
| 2711 | case READ_CAPACITY: |
| 2712 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); |
| 2713 | break; |
| 2714 | |
| 2715 | case SERVICE_ACTION_IN: |
| 2716 | if ((scsicmd[1] & 0x1f) == SAI_READ_CAPACITY_16) |
| 2717 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); |
| 2718 | else |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2719 | ata_scsi_invalid_field(cmd, done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2720 | break; |
| 2721 | |
| 2722 | case REPORT_LUNS: |
| 2723 | ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns); |
| 2724 | break; |
| 2725 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2726 | /* mandatory commands we haven't implemented yet */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2727 | case REQUEST_SENSE: |
| 2728 | |
| 2729 | /* all other commands */ |
| 2730 | default: |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2731 | ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x20, 0x0); |
| 2732 | /* "Invalid command operation code" */ |
| 2733 | done(cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2734 | break; |
| 2735 | } |
| 2736 | } |
| 2737 | |
Jeff Garzik | 644dd0c | 2005-10-03 15:55:19 -0400 | [diff] [blame] | 2738 | void ata_scsi_scan_host(struct ata_port *ap) |
| 2739 | { |
Jeff Garzik | 3f19ee8 | 2005-10-03 21:36:41 -0400 | [diff] [blame] | 2740 | struct ata_device *dev; |
Jeff Garzik | 644dd0c | 2005-10-03 15:55:19 -0400 | [diff] [blame] | 2741 | unsigned int i; |
| 2742 | |
| 2743 | if (ap->flags & ATA_FLAG_PORT_DISABLED) |
| 2744 | return; |
| 2745 | |
Jeff Garzik | 3f19ee8 | 2005-10-03 21:36:41 -0400 | [diff] [blame] | 2746 | for (i = 0; i < ATA_MAX_DEVICES; i++) { |
| 2747 | dev = &ap->device[i]; |
| 2748 | |
| 2749 | if (ata_dev_present(dev)) |
| 2750 | scsi_scan_target(&ap->host->shost_gendev, 0, i, 0, 0); |
| 2751 | } |
Jeff Garzik | 644dd0c | 2005-10-03 15:55:19 -0400 | [diff] [blame] | 2752 | } |
| 2753 | |