Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Jeff Garzik | af36d7f | 2005-08-28 20:18:39 -0400 | [diff] [blame] | 2 | * libata-scsi.c - helper library for ATA |
| 3 | * |
| 4 | * Maintained by: Jeff Garzik <jgarzik@pobox.com> |
| 5 | * Please ALWAYS copy linux-ide@vger.kernel.org |
| 6 | * on emails. |
| 7 | * |
| 8 | * Copyright 2003-2004 Red Hat, Inc. All rights reserved. |
| 9 | * Copyright 2003-2004 Jeff Garzik |
| 10 | * |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of the GNU General Public License as published by |
| 14 | * the Free Software Foundation; either version 2, or (at your option) |
| 15 | * any later version. |
| 16 | * |
| 17 | * This program is distributed in the hope that it will be useful, |
| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | * GNU General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License |
| 23 | * along with this program; see the file COPYING. If not, write to |
| 24 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
| 25 | * |
| 26 | * |
| 27 | * libata documentation is available via 'make {ps|pdf}docs', |
| 28 | * as Documentation/DocBook/libata.* |
| 29 | * |
| 30 | * Hardware documentation available from |
| 31 | * - http://www.t10.org/ |
| 32 | * - http://www.t13.org/ |
| 33 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | */ |
| 35 | |
| 36 | #include <linux/kernel.h> |
| 37 | #include <linux/blkdev.h> |
| 38 | #include <linux/spinlock.h> |
| 39 | #include <scsi/scsi.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include <scsi/scsi_host.h> |
Christoph Hellwig | beb4048 | 2006-06-10 18:01:03 +0200 | [diff] [blame] | 41 | #include <scsi/scsi_cmnd.h> |
Mike Christie | 85837eb | 2005-11-11 16:38:53 -0600 | [diff] [blame] | 42 | #include <scsi/scsi_eh.h> |
Jeff Garzik | 005a5a0 | 2005-10-30 23:31:48 -0500 | [diff] [blame] | 43 | #include <scsi/scsi_device.h> |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 44 | #include <scsi/scsi_tcq.h> |
Tejun Heo | 30afc84 | 2006-03-18 18:40:14 +0900 | [diff] [blame] | 45 | #include <scsi/scsi_transport.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #include <linux/libata.h> |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 47 | #include <linux/hdreg.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #include <asm/uaccess.h> |
| 49 | |
| 50 | #include "libata.h" |
| 51 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 52 | #define SECTOR_SIZE 512 |
| 53 | |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 54 | typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc); |
Tejun Heo | ab5b3a5 | 2006-05-31 18:27:34 +0900 | [diff] [blame] | 55 | |
| 56 | static struct ata_device * __ata_scsi_find_dev(struct ata_port *ap, |
| 57 | const struct scsi_device *scsidev); |
| 58 | static struct ata_device * ata_scsi_find_dev(struct ata_port *ap, |
| 59 | const struct scsi_device *scsidev); |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 60 | static int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel, |
| 61 | unsigned int id, unsigned int lun); |
Tejun Heo | ab5b3a5 | 2006-05-31 18:27:34 +0900 | [diff] [blame] | 62 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 64 | #define RW_RECOVERY_MPAGE 0x1 |
| 65 | #define RW_RECOVERY_MPAGE_LEN 12 |
| 66 | #define CACHE_MPAGE 0x8 |
| 67 | #define CACHE_MPAGE_LEN 20 |
| 68 | #define CONTROL_MPAGE 0xa |
| 69 | #define CONTROL_MPAGE_LEN 12 |
| 70 | #define ALL_MPAGES 0x3f |
| 71 | #define ALL_SUB_MPAGES 0xff |
| 72 | |
| 73 | |
| 74 | static const u8 def_rw_recovery_mpage[] = { |
| 75 | RW_RECOVERY_MPAGE, |
| 76 | RW_RECOVERY_MPAGE_LEN - 2, |
| 77 | (1 << 7) | /* AWRE, sat-r06 say it shall be 0 */ |
| 78 | (1 << 6), /* ARRE (auto read reallocation) */ |
| 79 | 0, /* read retry count */ |
| 80 | 0, 0, 0, 0, |
| 81 | 0, /* write retry count */ |
| 82 | 0, 0, 0 |
| 83 | }; |
| 84 | |
| 85 | static const u8 def_cache_mpage[CACHE_MPAGE_LEN] = { |
| 86 | CACHE_MPAGE, |
| 87 | CACHE_MPAGE_LEN - 2, |
| 88 | 0, /* contains WCE, needs to be 0 for logic */ |
| 89 | 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 90 | 0, /* contains DRA, needs to be 0 for logic */ |
| 91 | 0, 0, 0, 0, 0, 0, 0 |
| 92 | }; |
| 93 | |
| 94 | static const u8 def_control_mpage[CONTROL_MPAGE_LEN] = { |
| 95 | CONTROL_MPAGE, |
| 96 | CONTROL_MPAGE_LEN - 2, |
| 97 | 2, /* DSENSE=0, GLTSD=1 */ |
| 98 | 0, /* [QAM+QERR may be 1, see 05-359r1] */ |
| 99 | 0, 0, 0, 0, 0xff, 0xff, |
| 100 | 0, 30 /* extended self test time, see 05-359r1 */ |
| 101 | }; |
| 102 | |
Tejun Heo | 30afc84 | 2006-03-18 18:40:14 +0900 | [diff] [blame] | 103 | /* |
| 104 | * libata transport template. libata doesn't do real transport stuff. |
| 105 | * It just needs the eh_timed_out hook. |
| 106 | */ |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 107 | static struct scsi_transport_template ata_scsi_transport_template = { |
Christoph Hellwig | 9227c33 | 2006-04-01 19:21:04 +0200 | [diff] [blame] | 108 | .eh_strategy_handler = ata_scsi_error, |
Tejun Heo | 30afc84 | 2006-03-18 18:40:14 +0900 | [diff] [blame] | 109 | .eh_timed_out = ata_scsi_timed_out, |
Tejun Heo | ccf68c3 | 2006-05-31 18:28:09 +0900 | [diff] [blame] | 110 | .user_scan = ata_scsi_user_scan, |
Tejun Heo | 30afc84 | 2006-03-18 18:40:14 +0900 | [diff] [blame] | 111 | }; |
| 112 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 114 | static void ata_scsi_invalid_field(struct scsi_cmnd *cmd, |
| 115 | void (*done)(struct scsi_cmnd *)) |
| 116 | { |
| 117 | ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x24, 0x0); |
| 118 | /* "Invalid field in cbd" */ |
| 119 | done(cmd); |
| 120 | } |
| 121 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | /** |
| 123 | * ata_std_bios_param - generic bios head/sector/cylinder calculator used by sd. |
| 124 | * @sdev: SCSI device for which BIOS geometry is to be determined |
| 125 | * @bdev: block device associated with @sdev |
| 126 | * @capacity: capacity of SCSI device |
| 127 | * @geom: location to which geometry will be output |
| 128 | * |
| 129 | * Generic bios head/sector/cylinder calculator |
| 130 | * used by sd. Most BIOSes nowadays expect a XXX/255/16 (CHS) |
| 131 | * mapping. Some situations may arise where the disk is not |
| 132 | * bootable if this is not used. |
| 133 | * |
| 134 | * LOCKING: |
| 135 | * Defined by the SCSI layer. We don't really care. |
| 136 | * |
| 137 | * RETURNS: |
| 138 | * Zero. |
| 139 | */ |
| 140 | int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev, |
| 141 | sector_t capacity, int geom[]) |
| 142 | { |
| 143 | geom[0] = 255; |
| 144 | geom[1] = 63; |
| 145 | sector_div(capacity, 255*63); |
| 146 | geom[2] = capacity; |
| 147 | |
| 148 | return 0; |
| 149 | } |
| 150 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 151 | /** |
Tejun Heo | 5924b74 | 2007-01-02 20:20:07 +0900 | [diff] [blame] | 152 | * ata_get_identity - Handler for HDIO_GET_IDENTITY ioctl |
| 153 | * @sdev: SCSI device to get identify data for |
| 154 | * @arg: User buffer area for identify data |
| 155 | * |
| 156 | * LOCKING: |
| 157 | * Defined by the SCSI layer. We don't really care. |
| 158 | * |
| 159 | * RETURNS: |
| 160 | * Zero on success, negative errno on error. |
| 161 | */ |
| 162 | static int ata_get_identity(struct scsi_device *sdev, void __user *arg) |
| 163 | { |
| 164 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
| 165 | struct ata_device *dev = ata_scsi_find_dev(ap, sdev); |
| 166 | u16 __user *dst = arg; |
| 167 | char buf[40]; |
| 168 | |
| 169 | if (!dev) |
| 170 | return -ENOMSG; |
| 171 | |
| 172 | if (copy_to_user(dst, dev->id, ATA_ID_WORDS * sizeof(u16))) |
| 173 | return -EFAULT; |
| 174 | |
| 175 | ata_id_string(dev->id, buf, ATA_ID_PROD, ATA_ID_PROD_LEN); |
| 176 | if (copy_to_user(dst + ATA_ID_PROD, buf, ATA_ID_PROD_LEN)) |
| 177 | return -EFAULT; |
| 178 | |
| 179 | ata_id_string(dev->id, buf, ATA_ID_FW_REV, ATA_ID_FW_REV_LEN); |
| 180 | if (copy_to_user(dst + ATA_ID_FW_REV, buf, ATA_ID_FW_REV_LEN)) |
| 181 | return -EFAULT; |
| 182 | |
| 183 | ata_id_string(dev->id, buf, ATA_ID_SERNO, ATA_ID_SERNO_LEN); |
| 184 | if (copy_to_user(dst + ATA_ID_SERNO, buf, ATA_ID_SERNO_LEN)) |
| 185 | return -EFAULT; |
| 186 | |
| 187 | return 0; |
| 188 | } |
| 189 | |
| 190 | /** |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 191 | * ata_cmd_ioctl - Handler for HDIO_DRIVE_CMD ioctl |
Randy Dunlap | 8e8b77d | 2005-11-01 21:29:27 -0800 | [diff] [blame] | 192 | * @scsidev: Device to which we are issuing command |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 193 | * @arg: User provided data for issuing command |
| 194 | * |
| 195 | * LOCKING: |
| 196 | * Defined by the SCSI layer. We don't really care. |
| 197 | * |
| 198 | * RETURNS: |
| 199 | * Zero on success, negative errno on error. |
| 200 | */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 201 | int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg) |
| 202 | { |
| 203 | int rc = 0; |
| 204 | u8 scsi_cmd[MAX_COMMAND_SIZE]; |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 205 | u8 args[4], *argbuf = NULL, *sensebuf = NULL; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 206 | int argsize = 0; |
Mike Christie | 85837eb | 2005-11-11 16:38:53 -0600 | [diff] [blame] | 207 | enum dma_data_direction data_dir; |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 208 | int cmd_result; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 209 | |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 210 | if (arg == NULL) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 211 | return -EINVAL; |
| 212 | |
| 213 | if (copy_from_user(args, arg, sizeof(args))) |
| 214 | return -EFAULT; |
| 215 | |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 216 | sensebuf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO); |
| 217 | if (!sensebuf) |
| 218 | return -ENOMEM; |
| 219 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 220 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
| 221 | |
| 222 | if (args[3]) { |
| 223 | argsize = SECTOR_SIZE * args[3]; |
| 224 | argbuf = kmalloc(argsize, GFP_KERNEL); |
Jeff Raubitschek | 54dac83 | 2005-10-04 10:21:19 -0400 | [diff] [blame] | 225 | if (argbuf == NULL) { |
| 226 | rc = -ENOMEM; |
| 227 | goto error; |
| 228 | } |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 229 | |
| 230 | scsi_cmd[1] = (4 << 1); /* PIO Data-in */ |
| 231 | scsi_cmd[2] = 0x0e; /* no off.line or cc, read from dev, |
| 232 | block count in sector count field */ |
Mike Christie | 85837eb | 2005-11-11 16:38:53 -0600 | [diff] [blame] | 233 | data_dir = DMA_FROM_DEVICE; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 234 | } else { |
| 235 | scsi_cmd[1] = (3 << 1); /* Non-data */ |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 236 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ |
Mike Christie | 85837eb | 2005-11-11 16:38:53 -0600 | [diff] [blame] | 237 | data_dir = DMA_NONE; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 238 | } |
| 239 | |
| 240 | scsi_cmd[0] = ATA_16; |
| 241 | |
| 242 | scsi_cmd[4] = args[2]; |
| 243 | if (args[0] == WIN_SMART) { /* hack -- ide driver does this too... */ |
| 244 | scsi_cmd[6] = args[3]; |
| 245 | scsi_cmd[8] = args[1]; |
| 246 | scsi_cmd[10] = 0x4f; |
| 247 | scsi_cmd[12] = 0xc2; |
| 248 | } else { |
| 249 | scsi_cmd[6] = args[1]; |
| 250 | } |
| 251 | scsi_cmd[14] = args[0]; |
| 252 | |
| 253 | /* Good values for timeout and retries? Values below |
| 254 | from scsi_ioctl_send_command() for default case... */ |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 255 | cmd_result = scsi_execute(scsidev, scsi_cmd, data_dir, argbuf, argsize, |
| 256 | sensebuf, (10*HZ), 5, 0); |
| 257 | |
| 258 | if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */ |
| 259 | u8 *desc = sensebuf + 8; |
| 260 | cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ |
| 261 | |
| 262 | /* If we set cc then ATA pass-through will cause a |
| 263 | * check condition even if no error. Filter that. */ |
| 264 | if (cmd_result & SAM_STAT_CHECK_CONDITION) { |
| 265 | struct scsi_sense_hdr sshdr; |
| 266 | scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE, |
| 267 | &sshdr); |
| 268 | if (sshdr.sense_key==0 && |
| 269 | sshdr.asc==0 && sshdr.ascq==0) |
| 270 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; |
| 271 | } |
| 272 | |
| 273 | /* Send userspace a few ATA registers (same as drivers/ide) */ |
| 274 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ |
| 275 | desc[0] == 0x09 ) { /* code is "ATA Descriptor" */ |
| 276 | args[0] = desc[13]; /* status */ |
| 277 | args[1] = desc[3]; /* error */ |
| 278 | args[2] = desc[5]; /* sector count (0:7) */ |
| 279 | if (copy_to_user(arg, args, sizeof(args))) |
| 280 | rc = -EFAULT; |
| 281 | } |
| 282 | } |
| 283 | |
| 284 | |
| 285 | if (cmd_result) { |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 286 | rc = -EIO; |
| 287 | goto error; |
| 288 | } |
| 289 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 290 | if ((argbuf) |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 291 | && copy_to_user(arg + sizeof(args), argbuf, argsize)) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 292 | rc = -EFAULT; |
| 293 | error: |
Eran Tromer | bbe1fe7 | 2006-10-10 14:29:25 -0700 | [diff] [blame] | 294 | kfree(sensebuf); |
Jesper Juhl | 8f76078 | 2006-06-27 02:55:06 -0700 | [diff] [blame] | 295 | kfree(argbuf); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 296 | return rc; |
| 297 | } |
| 298 | |
| 299 | /** |
| 300 | * ata_task_ioctl - Handler for HDIO_DRIVE_TASK ioctl |
Randy Dunlap | 8e8b77d | 2005-11-01 21:29:27 -0800 | [diff] [blame] | 301 | * @scsidev: Device to which we are issuing command |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 302 | * @arg: User provided data for issuing command |
| 303 | * |
| 304 | * LOCKING: |
| 305 | * Defined by the SCSI layer. We don't really care. |
| 306 | * |
| 307 | * RETURNS: |
| 308 | * Zero on success, negative errno on error. |
| 309 | */ |
| 310 | int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg) |
| 311 | { |
| 312 | int rc = 0; |
| 313 | u8 scsi_cmd[MAX_COMMAND_SIZE]; |
David Milburn | af068bd | 2007-01-30 00:59:15 -0800 | [diff] [blame] | 314 | u8 args[7], *sensebuf = NULL; |
| 315 | int cmd_result; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 316 | |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 317 | if (arg == NULL) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 318 | return -EINVAL; |
| 319 | |
| 320 | if (copy_from_user(args, arg, sizeof(args))) |
| 321 | return -EFAULT; |
| 322 | |
David Milburn | af068bd | 2007-01-30 00:59:15 -0800 | [diff] [blame] | 323 | sensebuf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO); |
| 324 | if (!sensebuf) |
| 325 | return -ENOMEM; |
| 326 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 327 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
| 328 | scsi_cmd[0] = ATA_16; |
| 329 | scsi_cmd[1] = (3 << 1); /* Non-data */ |
David Milburn | af068bd | 2007-01-30 00:59:15 -0800 | [diff] [blame] | 330 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 331 | scsi_cmd[4] = args[1]; |
| 332 | scsi_cmd[6] = args[2]; |
| 333 | scsi_cmd[8] = args[3]; |
| 334 | scsi_cmd[10] = args[4]; |
| 335 | scsi_cmd[12] = args[5]; |
Mark Lord | 277239f | 2007-03-30 17:45:52 -0400 | [diff] [blame] | 336 | scsi_cmd[13] = args[6] & 0x4f; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 337 | scsi_cmd[14] = args[0]; |
| 338 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 339 | /* Good values for timeout and retries? Values below |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 340 | from scsi_ioctl_send_command() for default case... */ |
David Milburn | af068bd | 2007-01-30 00:59:15 -0800 | [diff] [blame] | 341 | cmd_result = scsi_execute(scsidev, scsi_cmd, DMA_NONE, NULL, 0, |
| 342 | sensebuf, (10*HZ), 5, 0); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 343 | |
David Milburn | af068bd | 2007-01-30 00:59:15 -0800 | [diff] [blame] | 344 | if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */ |
| 345 | u8 *desc = sensebuf + 8; |
| 346 | cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ |
| 347 | |
| 348 | /* If we set cc then ATA pass-through will cause a |
| 349 | * check condition even if no error. Filter that. */ |
| 350 | if (cmd_result & SAM_STAT_CHECK_CONDITION) { |
| 351 | struct scsi_sense_hdr sshdr; |
| 352 | scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE, |
| 353 | &sshdr); |
| 354 | if (sshdr.sense_key==0 && |
| 355 | sshdr.asc==0 && sshdr.ascq==0) |
| 356 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; |
| 357 | } |
| 358 | |
| 359 | /* Send userspace ATA registers */ |
| 360 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ |
| 361 | desc[0] == 0x09) {/* code is "ATA Descriptor" */ |
| 362 | args[0] = desc[13]; /* status */ |
| 363 | args[1] = desc[3]; /* error */ |
| 364 | args[2] = desc[5]; /* sector count (0:7) */ |
| 365 | args[3] = desc[7]; /* lbal */ |
| 366 | args[4] = desc[9]; /* lbam */ |
| 367 | args[5] = desc[11]; /* lbah */ |
| 368 | args[6] = desc[12]; /* select */ |
| 369 | if (copy_to_user(arg, args, sizeof(args))) |
| 370 | rc = -EFAULT; |
| 371 | } |
| 372 | } |
| 373 | |
| 374 | if (cmd_result) { |
| 375 | rc = -EIO; |
| 376 | goto error; |
| 377 | } |
| 378 | |
| 379 | error: |
| 380 | kfree(sensebuf); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 381 | return rc; |
| 382 | } |
| 383 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | int ata_scsi_ioctl(struct scsi_device *scsidev, int cmd, void __user *arg) |
| 385 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | int val = -EINVAL, rc = -EINVAL; |
| 387 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | switch (cmd) { |
| 389 | case ATA_IOC_GET_IO32: |
| 390 | val = 0; |
| 391 | if (copy_to_user(arg, &val, 1)) |
| 392 | return -EFAULT; |
| 393 | return 0; |
| 394 | |
| 395 | case ATA_IOC_SET_IO32: |
| 396 | val = (unsigned long) arg; |
| 397 | if (val != 0) |
| 398 | return -EINVAL; |
| 399 | return 0; |
| 400 | |
Tejun Heo | 5924b74 | 2007-01-02 20:20:07 +0900 | [diff] [blame] | 401 | case HDIO_GET_IDENTITY: |
| 402 | return ata_get_identity(scsidev, arg); |
| 403 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 404 | case HDIO_DRIVE_CMD: |
| 405 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
| 406 | return -EACCES; |
| 407 | return ata_cmd_ioctl(scsidev, arg); |
| 408 | |
| 409 | case HDIO_DRIVE_TASK: |
| 410 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
| 411 | return -EACCES; |
| 412 | return ata_task_ioctl(scsidev, arg); |
| 413 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | default: |
| 415 | rc = -ENOTTY; |
| 416 | break; |
| 417 | } |
| 418 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | return rc; |
| 420 | } |
| 421 | |
| 422 | /** |
| 423 | * ata_scsi_qc_new - acquire new ata_queued_cmd reference |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | * @dev: ATA device to which the new command is attached |
| 425 | * @cmd: SCSI command that originated this ATA command |
| 426 | * @done: SCSI command completion function |
| 427 | * |
| 428 | * Obtain a reference to an unused ata_queued_cmd structure, |
| 429 | * which is the basic libata structure representing a single |
| 430 | * ATA command sent to the hardware. |
| 431 | * |
| 432 | * If a command was available, fill in the SCSI-specific |
| 433 | * portions of the structure with information on the |
| 434 | * current command. |
| 435 | * |
| 436 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 437 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | * |
| 439 | * RETURNS: |
| 440 | * Command allocated, or %NULL if none available. |
| 441 | */ |
Adrian Bunk | 7102d23 | 2007-01-04 00:09:36 +0100 | [diff] [blame] | 442 | static struct ata_queued_cmd *ata_scsi_qc_new(struct ata_device *dev, |
| 443 | struct scsi_cmnd *cmd, |
| 444 | void (*done)(struct scsi_cmnd *)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | { |
| 446 | struct ata_queued_cmd *qc; |
| 447 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 448 | qc = ata_qc_new_init(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | if (qc) { |
| 450 | qc->scsicmd = cmd; |
| 451 | qc->scsidone = done; |
| 452 | |
| 453 | if (cmd->use_sg) { |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 454 | qc->__sg = (struct scatterlist *) cmd->request_buffer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | qc->n_elem = cmd->use_sg; |
Brian King | 7a80118 | 2007-01-17 12:32:12 -0600 | [diff] [blame] | 456 | } else if (cmd->request_bufflen) { |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 457 | qc->__sg = &qc->sgent; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | qc->n_elem = 1; |
| 459 | } |
| 460 | } else { |
| 461 | cmd->result = (DID_OK << 16) | (QUEUE_FULL << 1); |
| 462 | done(cmd); |
| 463 | } |
| 464 | |
| 465 | return qc; |
| 466 | } |
| 467 | |
| 468 | /** |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 469 | * ata_dump_status - user friendly display of error info |
| 470 | * @id: id of the port in question |
| 471 | * @tf: ptr to filled out taskfile |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | * |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 473 | * Decode and dump the ATA error/status registers for the user so |
| 474 | * that they have some idea what really happened at the non |
| 475 | * make-believe layer. |
| 476 | * |
| 477 | * LOCKING: |
| 478 | * inherited from caller |
| 479 | */ |
Adrian Bunk | 7102d23 | 2007-01-04 00:09:36 +0100 | [diff] [blame] | 480 | static void ata_dump_status(unsigned id, struct ata_taskfile *tf) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 481 | { |
| 482 | u8 stat = tf->command, err = tf->feature; |
| 483 | |
| 484 | printk(KERN_WARNING "ata%u: status=0x%02x { ", id, stat); |
| 485 | if (stat & ATA_BUSY) { |
| 486 | printk("Busy }\n"); /* Data is not valid in this case */ |
| 487 | } else { |
| 488 | if (stat & 0x40) printk("DriveReady "); |
| 489 | if (stat & 0x20) printk("DeviceFault "); |
| 490 | if (stat & 0x10) printk("SeekComplete "); |
| 491 | if (stat & 0x08) printk("DataRequest "); |
| 492 | if (stat & 0x04) printk("CorrectedError "); |
| 493 | if (stat & 0x02) printk("Index "); |
| 494 | if (stat & 0x01) printk("Error "); |
| 495 | printk("}\n"); |
| 496 | |
| 497 | if (err) { |
| 498 | printk(KERN_WARNING "ata%u: error=0x%02x { ", id, err); |
| 499 | if (err & 0x04) printk("DriveStatusError "); |
| 500 | if (err & 0x80) { |
| 501 | if (err & 0x04) printk("BadCRC "); |
| 502 | else printk("Sector "); |
| 503 | } |
| 504 | if (err & 0x40) printk("UncorrectableError "); |
| 505 | if (err & 0x10) printk("SectorIdNotFound "); |
| 506 | if (err & 0x02) printk("TrackZeroNotFound "); |
| 507 | if (err & 0x01) printk("AddrMarkNotFound "); |
| 508 | printk("}\n"); |
| 509 | } |
| 510 | } |
| 511 | } |
| 512 | |
| 513 | /** |
| 514 | * ata_to_sense_error - convert ATA error to SCSI error |
Randy Dunlap | 8e8b77d | 2005-11-01 21:29:27 -0800 | [diff] [blame] | 515 | * @id: ATA device number |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 516 | * @drv_stat: value contained in ATA status register |
| 517 | * @drv_err: value contained in ATA error register |
| 518 | * @sk: the sense key we'll fill out |
| 519 | * @asc: the additional sense code we'll fill out |
| 520 | * @ascq: the additional sense code qualifier we'll fill out |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 521 | * @verbose: be verbose |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 522 | * |
| 523 | * Converts an ATA error into a SCSI error. Fill out pointers to |
| 524 | * SK, ASC, and ASCQ bytes for later use in fixed or descriptor |
| 525 | * format sense blocks. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | * |
| 527 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 528 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | */ |
Adrian Bunk | 7102d23 | 2007-01-04 00:09:36 +0100 | [diff] [blame] | 530 | static void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, |
| 531 | u8 *asc, u8 *ascq, int verbose) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | { |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 533 | int i; |
Jeff Garzik | ffe75ef | 2005-10-09 10:40:44 -0400 | [diff] [blame] | 534 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | /* Based on the 3ware driver translation table */ |
Arjan van de Ven | 98ac62d | 2005-11-28 10:06:23 +0100 | [diff] [blame] | 536 | static const unsigned char sense_table[][4] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | /* BBD|ECC|ID|MAR */ |
| 538 | {0xd1, ABORTED_COMMAND, 0x00, 0x00}, // Device busy Aborted command |
| 539 | /* BBD|ECC|ID */ |
| 540 | {0xd0, ABORTED_COMMAND, 0x00, 0x00}, // Device busy Aborted command |
| 541 | /* ECC|MC|MARK */ |
| 542 | {0x61, HARDWARE_ERROR, 0x00, 0x00}, // Device fault Hardware error |
| 543 | /* ICRC|ABRT */ /* NB: ICRC & !ABRT is BBD */ |
| 544 | {0x84, ABORTED_COMMAND, 0x47, 0x00}, // Data CRC error SCSI parity error |
| 545 | /* MC|ID|ABRT|TRK0|MARK */ |
| 546 | {0x37, NOT_READY, 0x04, 0x00}, // Unit offline Not ready |
| 547 | /* MCR|MARK */ |
| 548 | {0x09, NOT_READY, 0x04, 0x00}, // Unrecovered disk error Not ready |
| 549 | /* Bad address mark */ |
| 550 | {0x01, MEDIUM_ERROR, 0x13, 0x00}, // Address mark not found Address mark not found for data field |
| 551 | /* TRK0 */ |
| 552 | {0x02, HARDWARE_ERROR, 0x00, 0x00}, // Track 0 not found Hardware error |
| 553 | /* Abort & !ICRC */ |
| 554 | {0x04, ABORTED_COMMAND, 0x00, 0x00}, // Aborted command Aborted command |
| 555 | /* Media change request */ |
| 556 | {0x08, NOT_READY, 0x04, 0x00}, // Media change request FIXME: faking offline |
| 557 | /* SRV */ |
| 558 | {0x10, ABORTED_COMMAND, 0x14, 0x00}, // ID not found Recorded entity not found |
| 559 | /* Media change */ |
| 560 | {0x08, NOT_READY, 0x04, 0x00}, // Media change FIXME: faking offline |
| 561 | /* ECC */ |
| 562 | {0x40, MEDIUM_ERROR, 0x11, 0x04}, // Uncorrectable ECC error Unrecovered read error |
| 563 | /* BBD - block marked bad */ |
| 564 | {0x80, MEDIUM_ERROR, 0x11, 0x04}, // Block marked bad Medium error, unrecovered read error |
| 565 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
| 566 | }; |
Arjan van de Ven | 98ac62d | 2005-11-28 10:06:23 +0100 | [diff] [blame] | 567 | static const unsigned char stat_table[][4] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | /* Must be first because BUSY means no other bits valid */ |
| 569 | {0x80, ABORTED_COMMAND, 0x47, 0x00}, // Busy, fake parity for now |
| 570 | {0x20, HARDWARE_ERROR, 0x00, 0x00}, // Device fault |
| 571 | {0x08, ABORTED_COMMAND, 0x47, 0x00}, // Timed out in xfer, fake parity for now |
| 572 | {0x04, RECOVERED_ERROR, 0x11, 0x00}, // Recovered ECC error Medium error, recovered |
| 573 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
| 574 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | /* |
| 577 | * Is this an error we can process/parse |
| 578 | */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 579 | if (drv_stat & ATA_BUSY) { |
| 580 | drv_err = 0; /* Ignore the err bits, they're invalid */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 583 | if (drv_err) { |
| 584 | /* Look for drv_err */ |
| 585 | for (i = 0; sense_table[i][0] != 0xFF; i++) { |
| 586 | /* Look for best matches first */ |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 587 | if ((sense_table[i][0] & drv_err) == |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 588 | sense_table[i][0]) { |
| 589 | *sk = sense_table[i][1]; |
| 590 | *asc = sense_table[i][2]; |
| 591 | *ascq = sense_table[i][3]; |
| 592 | goto translate_done; |
| 593 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | } |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 595 | /* No immediate match */ |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 596 | if (verbose) |
| 597 | printk(KERN_WARNING "ata%u: no sense translation for " |
| 598 | "error 0x%02x\n", id, drv_err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | } |
| 600 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | /* Fall back to interpreting status bits */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 602 | for (i = 0; stat_table[i][0] != 0xFF; i++) { |
| 603 | if (stat_table[i][0] & drv_stat) { |
| 604 | *sk = stat_table[i][1]; |
| 605 | *asc = stat_table[i][2]; |
| 606 | *ascq = stat_table[i][3]; |
| 607 | goto translate_done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | } |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 610 | /* No error? Undecoded? */ |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 611 | if (verbose) |
| 612 | printk(KERN_WARNING "ata%u: no sense translation for " |
| 613 | "status: 0x%02x\n", id, drv_stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | |
Alan Cox | 2d20202 | 2006-03-21 15:53:46 +0000 | [diff] [blame] | 615 | /* We need a sensible error return here, which is tricky, and one |
| 616 | that won't cause people to do things like return a disk wrongly */ |
| 617 | *sk = ABORTED_COMMAND; |
| 618 | *asc = 0x00; |
| 619 | *ascq = 0x00; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 620 | |
| 621 | translate_done: |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 622 | if (verbose) |
| 623 | printk(KERN_ERR "ata%u: translated ATA stat/err 0x%02x/%02x " |
| 624 | "to SCSI SK/ASC/ASCQ 0x%x/%02x/%02x\n", |
| 625 | id, drv_stat, drv_err, *sk, *asc, *ascq); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 626 | return; |
| 627 | } |
| 628 | |
| 629 | /* |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 630 | * ata_gen_passthru_sense - Generate check condition sense block. |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 631 | * @qc: Command that completed. |
| 632 | * |
| 633 | * This function is specific to the ATA descriptor format sense |
| 634 | * block specified for the ATA pass through commands. Regardless |
| 635 | * of whether the command errored or not, return a sense |
| 636 | * block. Copy all controller registers into the sense |
| 637 | * block. Clear sense key, ASC & ASCQ if there is no error. |
| 638 | * |
| 639 | * LOCKING: |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 640 | * None. |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 641 | */ |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 642 | static void ata_gen_passthru_sense(struct ata_queued_cmd *qc) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 643 | { |
| 644 | struct scsi_cmnd *cmd = qc->scsicmd; |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 645 | struct ata_taskfile *tf = &qc->result_tf; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 646 | unsigned char *sb = cmd->sense_buffer; |
| 647 | unsigned char *desc = sb + 8; |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 648 | int verbose = qc->ap->ops->error_handler == NULL; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 649 | |
| 650 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); |
| 651 | |
Jeff Garzik | 0e5dec4 | 2005-10-06 09:40:20 -0400 | [diff] [blame] | 652 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 653 | |
| 654 | /* |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 655 | * Use ata_to_sense_error() to map status register bits |
| 656 | * onto sense key, asc & ascq. |
| 657 | */ |
Tejun Heo | 058e55e | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 658 | if (qc->err_mask || |
| 659 | tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 660 | ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature, |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 661 | &sb[1], &sb[2], &sb[3], verbose); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 662 | sb[1] &= 0x0f; |
| 663 | } |
| 664 | |
| 665 | /* |
| 666 | * Sense data is current and format is descriptor. |
| 667 | */ |
| 668 | sb[0] = 0x72; |
| 669 | |
| 670 | desc[0] = 0x09; |
| 671 | |
Tejun Heo | f38621b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 672 | /* set length of additional sense data */ |
| 673 | sb[7] = 14; |
| 674 | desc[1] = 12; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 675 | |
| 676 | /* |
| 677 | * Copy registers into sense buffer. |
| 678 | */ |
| 679 | desc[2] = 0x00; |
| 680 | desc[3] = tf->feature; /* == error reg */ |
| 681 | desc[5] = tf->nsect; |
| 682 | desc[7] = tf->lbal; |
| 683 | desc[9] = tf->lbam; |
| 684 | desc[11] = tf->lbah; |
| 685 | desc[12] = tf->device; |
| 686 | desc[13] = tf->command; /* == status reg */ |
| 687 | |
| 688 | /* |
| 689 | * Fill in Extend bit, and the high order bytes |
| 690 | * if applicable. |
| 691 | */ |
| 692 | if (tf->flags & ATA_TFLAG_LBA48) { |
| 693 | desc[2] |= 0x01; |
| 694 | desc[4] = tf->hob_nsect; |
| 695 | desc[6] = tf->hob_lbal; |
| 696 | desc[8] = tf->hob_lbam; |
| 697 | desc[10] = tf->hob_lbah; |
| 698 | } |
| 699 | } |
| 700 | |
| 701 | /** |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 702 | * ata_gen_ata_sense - generate a SCSI fixed sense block |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 703 | * @qc: Command that we are erroring out |
| 704 | * |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 705 | * Generate sense block for a failed ATA command @qc. Descriptor |
| 706 | * format is used to accomodate LBA48 block address. |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 707 | * |
| 708 | * LOCKING: |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 709 | * None. |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 710 | */ |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 711 | static void ata_gen_ata_sense(struct ata_queued_cmd *qc) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 712 | { |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 713 | struct ata_device *dev = qc->dev; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 714 | struct scsi_cmnd *cmd = qc->scsicmd; |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 715 | struct ata_taskfile *tf = &qc->result_tf; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 716 | unsigned char *sb = cmd->sense_buffer; |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 717 | unsigned char *desc = sb + 8; |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 718 | int verbose = qc->ap->ops->error_handler == NULL; |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 719 | u64 block; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 720 | |
| 721 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); |
| 722 | |
Jeff Garzik | 0e5dec4 | 2005-10-06 09:40:20 -0400 | [diff] [blame] | 723 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 724 | |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 725 | /* sense data is current and format is descriptor */ |
| 726 | sb[0] = 0x72; |
| 727 | |
| 728 | /* Use ata_to_sense_error() to map status register bits |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 729 | * onto sense key, asc & ascq. |
| 730 | */ |
Tejun Heo | 058e55e | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 731 | if (qc->err_mask || |
| 732 | tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 733 | ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature, |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 734 | &sb[1], &sb[2], &sb[3], verbose); |
| 735 | sb[1] &= 0x0f; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 736 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 738 | block = ata_tf_read_block(&qc->result_tf, dev); |
Jeff Garzik | 0274aa2 | 2005-06-22 13:50:56 -0400 | [diff] [blame] | 739 | |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 740 | /* information sense data descriptor */ |
| 741 | sb[7] = 12; |
| 742 | desc[0] = 0x00; |
| 743 | desc[1] = 10; |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 744 | |
Tejun Heo | d25614b | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 745 | desc[2] |= 0x80; /* valid */ |
| 746 | desc[6] = block >> 40; |
| 747 | desc[7] = block >> 32; |
| 748 | desc[8] = block >> 24; |
| 749 | desc[9] = block >> 16; |
| 750 | desc[10] = block >> 8; |
| 751 | desc[11] = block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | } |
| 753 | |
Brian King | a6cce2a | 2006-03-17 17:04:15 -0600 | [diff] [blame] | 754 | static void ata_scsi_sdev_config(struct scsi_device *sdev) |
| 755 | { |
| 756 | sdev->use_10_for_rw = 1; |
| 757 | sdev->use_10_for_ms = 1; |
| 758 | } |
| 759 | |
| 760 | static void ata_scsi_dev_config(struct scsi_device *sdev, |
| 761 | struct ata_device *dev) |
| 762 | { |
Tejun Heo | 914ed35 | 2006-11-01 18:39:55 +0900 | [diff] [blame] | 763 | /* configure max sectors */ |
| 764 | blk_queue_max_sectors(sdev->request_queue, dev->max_sectors); |
Brian King | a6cce2a | 2006-03-17 17:04:15 -0600 | [diff] [blame] | 765 | |
Tejun Heo | 914ed35 | 2006-11-01 18:39:55 +0900 | [diff] [blame] | 766 | /* SATA DMA transfers must be multiples of 4 byte, so |
Brian King | a6cce2a | 2006-03-17 17:04:15 -0600 | [diff] [blame] | 767 | * we need to pad ATAPI transfers using an extra sg. |
| 768 | * Decrement max hw segments accordingly. |
| 769 | */ |
| 770 | if (dev->class == ATA_DEV_ATAPI) { |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 771 | struct request_queue *q = sdev->request_queue; |
Brian King | a6cce2a | 2006-03-17 17:04:15 -0600 | [diff] [blame] | 772 | blk_queue_max_hw_segments(q, q->max_hw_segments - 1); |
| 773 | } |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 774 | |
| 775 | if (dev->flags & ATA_DFLAG_NCQ) { |
| 776 | int depth; |
| 777 | |
| 778 | depth = min(sdev->host->can_queue, ata_id_queue_depth(dev->id)); |
| 779 | depth = min(ATA_MAX_QUEUE - 1, depth); |
| 780 | scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, depth); |
| 781 | } |
Brian King | a6cce2a | 2006-03-17 17:04:15 -0600 | [diff] [blame] | 782 | } |
| 783 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | /** |
| 785 | * ata_scsi_slave_config - Set SCSI device attributes |
| 786 | * @sdev: SCSI device to examine |
| 787 | * |
| 788 | * This is called before we actually start reading |
| 789 | * and writing to the device, to configure certain |
| 790 | * SCSI mid-layer behaviors. |
| 791 | * |
| 792 | * LOCKING: |
| 793 | * Defined by SCSI layer. We don't really care. |
| 794 | */ |
| 795 | |
| 796 | int ata_scsi_slave_config(struct scsi_device *sdev) |
| 797 | { |
Tejun Heo | 3153436 | 2006-05-31 18:27:36 +0900 | [diff] [blame] | 798 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
| 799 | struct ata_device *dev = __ata_scsi_find_dev(ap, sdev); |
| 800 | |
Brian King | a6cce2a | 2006-03-17 17:04:15 -0600 | [diff] [blame] | 801 | ata_scsi_sdev_config(sdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | |
| 803 | blk_queue_max_phys_segments(sdev->request_queue, LIBATA_MAX_PRD); |
| 804 | |
Tejun Heo | 9666f40 | 2007-05-04 21:27:47 +0200 | [diff] [blame] | 805 | sdev->manage_start_stop = 1; |
| 806 | |
Tejun Heo | 3153436 | 2006-05-31 18:27:36 +0900 | [diff] [blame] | 807 | if (dev) |
Brian King | a6cce2a | 2006-03-17 17:04:15 -0600 | [diff] [blame] | 808 | ata_scsi_dev_config(sdev, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | |
| 810 | return 0; /* scsi layer doesn't check return value, sigh */ |
| 811 | } |
| 812 | |
| 813 | /** |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 814 | * ata_scsi_slave_destroy - SCSI device is about to be destroyed |
| 815 | * @sdev: SCSI device to be destroyed |
| 816 | * |
| 817 | * @sdev is about to be destroyed for hot/warm unplugging. If |
| 818 | * this unplugging was initiated by libata as indicated by NULL |
| 819 | * dev->sdev, this function doesn't have to do anything. |
| 820 | * Otherwise, SCSI layer initiated warm-unplug is in progress. |
| 821 | * Clear dev->sdev, schedule the device for ATA detach and invoke |
| 822 | * EH. |
| 823 | * |
| 824 | * LOCKING: |
| 825 | * Defined by SCSI layer. We don't really care. |
| 826 | */ |
| 827 | void ata_scsi_slave_destroy(struct scsi_device *sdev) |
| 828 | { |
| 829 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
| 830 | unsigned long flags; |
| 831 | struct ata_device *dev; |
| 832 | |
| 833 | if (!ap->ops->error_handler) |
| 834 | return; |
| 835 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 836 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 837 | dev = __ata_scsi_find_dev(ap, sdev); |
| 838 | if (dev && dev->sdev) { |
| 839 | /* SCSI device already in CANCEL state, no need to offline it */ |
| 840 | dev->sdev = NULL; |
| 841 | dev->flags |= ATA_DFLAG_DETACH; |
| 842 | ata_port_schedule_eh(ap); |
| 843 | } |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 844 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 845 | } |
| 846 | |
| 847 | /** |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 848 | * ata_scsi_change_queue_depth - SCSI callback for queue depth config |
| 849 | * @sdev: SCSI device to configure queue depth for |
| 850 | * @queue_depth: new queue depth |
| 851 | * |
| 852 | * This is libata standard hostt->change_queue_depth callback. |
| 853 | * SCSI will call into this callback when user tries to set queue |
| 854 | * depth via sysfs. |
| 855 | * |
| 856 | * LOCKING: |
| 857 | * SCSI layer (we don't care) |
| 858 | * |
| 859 | * RETURNS: |
| 860 | * Newly configured queue depth. |
| 861 | */ |
| 862 | int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth) |
| 863 | { |
| 864 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
| 865 | struct ata_device *dev; |
Tejun Heo | 360f654 | 2006-09-30 19:45:00 +0900 | [diff] [blame] | 866 | unsigned long flags; |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 867 | |
Tejun Heo | c3c70c4 | 2007-02-20 23:31:22 +0900 | [diff] [blame] | 868 | if (queue_depth < 1 || queue_depth == sdev->queue_depth) |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 869 | return sdev->queue_depth; |
| 870 | |
| 871 | dev = ata_scsi_find_dev(ap, sdev); |
| 872 | if (!dev || !ata_dev_enabled(dev)) |
| 873 | return sdev->queue_depth; |
| 874 | |
Tejun Heo | c3c70c4 | 2007-02-20 23:31:22 +0900 | [diff] [blame] | 875 | /* NCQ enabled? */ |
Tejun Heo | 360f654 | 2006-09-30 19:45:00 +0900 | [diff] [blame] | 876 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | c3c70c4 | 2007-02-20 23:31:22 +0900 | [diff] [blame] | 877 | dev->flags &= ~ATA_DFLAG_NCQ_OFF; |
| 878 | if (queue_depth == 1 || !ata_ncq_enabled(dev)) { |
Tejun Heo | 360f654 | 2006-09-30 19:45:00 +0900 | [diff] [blame] | 879 | dev->flags |= ATA_DFLAG_NCQ_OFF; |
Tejun Heo | c3c70c4 | 2007-02-20 23:31:22 +0900 | [diff] [blame] | 880 | queue_depth = 1; |
| 881 | } |
Tejun Heo | 360f654 | 2006-09-30 19:45:00 +0900 | [diff] [blame] | 882 | spin_unlock_irqrestore(ap->lock, flags); |
| 883 | |
Tejun Heo | c3c70c4 | 2007-02-20 23:31:22 +0900 | [diff] [blame] | 884 | /* limit and apply queue depth */ |
| 885 | queue_depth = min(queue_depth, sdev->host->can_queue); |
| 886 | queue_depth = min(queue_depth, ata_id_queue_depth(dev->id)); |
| 887 | queue_depth = min(queue_depth, ATA_MAX_QUEUE - 1); |
| 888 | |
| 889 | if (sdev->queue_depth == queue_depth) |
| 890 | return -EINVAL; |
| 891 | |
| 892 | scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, queue_depth); |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 893 | return queue_depth; |
| 894 | } |
| 895 | |
Tejun Heo | d9aca22 | 2007-05-17 16:43:26 +0200 | [diff] [blame] | 896 | /* XXX: for spindown warning */ |
Tejun Heo | da071b4 | 2007-05-14 17:26:18 +0200 | [diff] [blame] | 897 | static void ata_delayed_done_timerfn(unsigned long arg) |
| 898 | { |
| 899 | struct scsi_cmnd *scmd = (void *)arg; |
| 900 | |
| 901 | scmd->scsi_done(scmd); |
| 902 | } |
| 903 | |
Tejun Heo | d9aca22 | 2007-05-17 16:43:26 +0200 | [diff] [blame] | 904 | /* XXX: for spindown warning */ |
Tejun Heo | da071b4 | 2007-05-14 17:26:18 +0200 | [diff] [blame] | 905 | static void ata_delayed_done(struct scsi_cmnd *scmd) |
| 906 | { |
| 907 | static struct timer_list timer; |
| 908 | |
| 909 | setup_timer(&timer, ata_delayed_done_timerfn, (unsigned long)scmd); |
| 910 | mod_timer(&timer, jiffies + 5 * HZ); |
| 911 | } |
| 912 | |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 913 | /** |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 914 | * ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command |
| 915 | * @qc: Storage for translated ATA taskfile |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 916 | * |
| 917 | * Sets up an ATA taskfile to issue STANDBY (to stop) or READ VERIFY |
| 918 | * (to start). Perhaps these commands should be preceded by |
| 919 | * CHECK POWER MODE to see what power mode the device is already in. |
| 920 | * [See SAT revision 5 at www.t10.org] |
| 921 | * |
| 922 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 923 | * spin_lock_irqsave(host lock) |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 924 | * |
| 925 | * RETURNS: |
| 926 | * Zero on success, non-zero on error. |
| 927 | */ |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 928 | static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc) |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 929 | { |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 930 | struct scsi_cmnd *scmd = qc->scsicmd; |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 931 | struct ata_taskfile *tf = &qc->tf; |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 932 | const u8 *cdb = scmd->cmnd; |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 933 | |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 934 | if (scmd->cmd_len < 5) |
| 935 | goto invalid_fld; |
| 936 | |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 937 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; |
| 938 | tf->protocol = ATA_PROT_NODATA; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 939 | if (cdb[1] & 0x1) { |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 940 | ; /* ignore IMMED bit, violates sat-r05 */ |
| 941 | } |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 942 | if (cdb[4] & 0x2) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 943 | goto invalid_fld; /* LOEJ bit set not supported */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 944 | if (((cdb[4] >> 4) & 0xf) != 0) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 945 | goto invalid_fld; /* power conditions not supported */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 946 | if (cdb[4] & 0x1) { |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 947 | tf->nsect = 1; /* 1 sector, lba=0 */ |
Albert Lee | 9d5b130 | 2005-10-04 08:48:17 -0400 | [diff] [blame] | 948 | |
| 949 | if (qc->dev->flags & ATA_DFLAG_LBA) { |
Tejun Heo | c44078c | 2006-05-15 20:57:21 +0900 | [diff] [blame] | 950 | tf->flags |= ATA_TFLAG_LBA; |
Albert Lee | 9d5b130 | 2005-10-04 08:48:17 -0400 | [diff] [blame] | 951 | |
| 952 | tf->lbah = 0x0; |
| 953 | tf->lbam = 0x0; |
| 954 | tf->lbal = 0x0; |
| 955 | tf->device |= ATA_LBA; |
| 956 | } else { |
| 957 | /* CHS */ |
| 958 | tf->lbal = 0x1; /* sect */ |
| 959 | tf->lbam = 0x0; /* cyl low */ |
| 960 | tf->lbah = 0x0; /* cyl high */ |
| 961 | } |
| 962 | |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 963 | tf->command = ATA_CMD_VERIFY; /* READ VERIFY */ |
Tejun Heo | 920a4b1 | 2007-05-04 21:28:48 +0200 | [diff] [blame] | 964 | } else { |
| 965 | /* XXX: This is for backward compatibility, will be |
| 966 | * removed. Read Documentation/feature-removal-schedule.txt |
| 967 | * for more info. |
| 968 | */ |
Tejun Heo | d9aca22 | 2007-05-17 16:43:26 +0200 | [diff] [blame] | 969 | if ((qc->dev->flags & ATA_DFLAG_SPUNDOWN) && |
Tejun Heo | 920a4b1 | 2007-05-04 21:28:48 +0200 | [diff] [blame] | 970 | (system_state == SYSTEM_HALT || |
| 971 | system_state == SYSTEM_POWER_OFF)) { |
Tejun Heo | da071b4 | 2007-05-14 17:26:18 +0200 | [diff] [blame] | 972 | static unsigned long warned = 0; |
Tejun Heo | 920a4b1 | 2007-05-04 21:28:48 +0200 | [diff] [blame] | 973 | |
Tejun Heo | da071b4 | 2007-05-14 17:26:18 +0200 | [diff] [blame] | 974 | if (!test_and_set_bit(0, &warned)) { |
Tejun Heo | 920a4b1 | 2007-05-04 21:28:48 +0200 | [diff] [blame] | 975 | ata_dev_printk(qc->dev, KERN_WARNING, |
| 976 | "DISK MIGHT NOT BE SPUN DOWN PROPERLY. " |
| 977 | "UPDATE SHUTDOWN UTILITY\n"); |
| 978 | ata_dev_printk(qc->dev, KERN_WARNING, |
| 979 | "For more info, visit " |
| 980 | "http://linux-ata.org/shutdown.html\n"); |
Tejun Heo | da071b4 | 2007-05-14 17:26:18 +0200 | [diff] [blame] | 981 | |
| 982 | /* ->scsi_done is not used, use it for |
| 983 | * delayed completion. |
| 984 | */ |
| 985 | scmd->scsi_done = qc->scsidone; |
| 986 | qc->scsidone = ata_delayed_done; |
Tejun Heo | 920a4b1 | 2007-05-04 21:28:48 +0200 | [diff] [blame] | 987 | } |
| 988 | scmd->result = SAM_STAT_GOOD; |
| 989 | return 1; |
| 990 | } |
| 991 | |
Robert Hancock | 78981a7 | 2007-01-30 00:59:18 -0800 | [diff] [blame] | 992 | /* Issue ATA STANDBY IMMEDIATE command */ |
| 993 | tf->command = ATA_CMD_STANDBYNOW1; |
Tejun Heo | 920a4b1 | 2007-05-04 21:28:48 +0200 | [diff] [blame] | 994 | } |
Robert Hancock | 78981a7 | 2007-01-30 00:59:18 -0800 | [diff] [blame] | 995 | |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 996 | /* |
| 997 | * Standby and Idle condition timers could be implemented but that |
| 998 | * would require libata to implement the Power condition mode page |
| 999 | * and allow the user to change it. Changing mode pages requires |
| 1000 | * MODE SELECT to be implemented. |
| 1001 | */ |
| 1002 | |
| 1003 | return 0; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1004 | |
| 1005 | invalid_fld: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1006 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1007 | /* "Invalid field in cbd" */ |
| 1008 | return 1; |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 1009 | } |
| 1010 | |
| 1011 | |
| 1012 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1013 | * ata_scsi_flush_xlat - Translate SCSI SYNCHRONIZE CACHE command |
| 1014 | * @qc: Storage for translated ATA taskfile |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1015 | * |
| 1016 | * Sets up an ATA taskfile to issue FLUSH CACHE or |
| 1017 | * FLUSH CACHE EXT. |
| 1018 | * |
| 1019 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1020 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | * |
| 1022 | * RETURNS: |
| 1023 | * Zero on success, non-zero on error. |
| 1024 | */ |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 1025 | static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1026 | { |
| 1027 | struct ata_taskfile *tf = &qc->tf; |
| 1028 | |
| 1029 | tf->flags |= ATA_TFLAG_DEVICE; |
| 1030 | tf->protocol = ATA_PROT_NODATA; |
| 1031 | |
Tejun Heo | 6fc49ad | 2006-11-11 20:10:45 +0900 | [diff] [blame] | 1032 | if (qc->dev->flags & ATA_DFLAG_FLUSH_EXT) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1033 | tf->command = ATA_CMD_FLUSH_EXT; |
| 1034 | else |
| 1035 | tf->command = ATA_CMD_FLUSH; |
| 1036 | |
| 1037 | return 0; |
| 1038 | } |
| 1039 | |
| 1040 | /** |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1041 | * scsi_6_lba_len - Get LBA and transfer length |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1042 | * @cdb: SCSI command to translate |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1043 | * |
| 1044 | * Calculate LBA and transfer length for 6-byte commands. |
| 1045 | * |
| 1046 | * RETURNS: |
| 1047 | * @plba: the LBA |
| 1048 | * @plen: the transfer length |
| 1049 | */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1050 | static void scsi_6_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1051 | { |
| 1052 | u64 lba = 0; |
Jeff Garzik | 6c7b7d2 | 2007-05-25 04:39:39 -0400 | [diff] [blame] | 1053 | u32 len; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1054 | |
| 1055 | VPRINTK("six-byte command\n"); |
| 1056 | |
Jeff Garzik | 6c7b7d2 | 2007-05-25 04:39:39 -0400 | [diff] [blame] | 1057 | lba |= ((u64)(cdb[1] & 0x1f)) << 16; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1058 | lba |= ((u64)cdb[2]) << 8; |
| 1059 | lba |= ((u64)cdb[3]); |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1060 | |
Jeff Garzik | 6c7b7d2 | 2007-05-25 04:39:39 -0400 | [diff] [blame] | 1061 | len = cdb[4]; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1062 | |
| 1063 | *plba = lba; |
| 1064 | *plen = len; |
| 1065 | } |
| 1066 | |
| 1067 | /** |
| 1068 | * scsi_10_lba_len - Get LBA and transfer length |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1069 | * @cdb: SCSI command to translate |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1070 | * |
| 1071 | * Calculate LBA and transfer length for 10-byte commands. |
| 1072 | * |
| 1073 | * RETURNS: |
| 1074 | * @plba: the LBA |
| 1075 | * @plen: the transfer length |
| 1076 | */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1077 | static void scsi_10_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1078 | { |
| 1079 | u64 lba = 0; |
| 1080 | u32 len = 0; |
| 1081 | |
| 1082 | VPRINTK("ten-byte command\n"); |
| 1083 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1084 | lba |= ((u64)cdb[2]) << 24; |
| 1085 | lba |= ((u64)cdb[3]) << 16; |
| 1086 | lba |= ((u64)cdb[4]) << 8; |
| 1087 | lba |= ((u64)cdb[5]); |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1088 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1089 | len |= ((u32)cdb[7]) << 8; |
| 1090 | len |= ((u32)cdb[8]); |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1091 | |
| 1092 | *plba = lba; |
| 1093 | *plen = len; |
| 1094 | } |
| 1095 | |
| 1096 | /** |
| 1097 | * scsi_16_lba_len - Get LBA and transfer length |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1098 | * @cdb: SCSI command to translate |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1099 | * |
| 1100 | * Calculate LBA and transfer length for 16-byte commands. |
| 1101 | * |
| 1102 | * RETURNS: |
| 1103 | * @plba: the LBA |
| 1104 | * @plen: the transfer length |
| 1105 | */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1106 | static void scsi_16_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1107 | { |
| 1108 | u64 lba = 0; |
| 1109 | u32 len = 0; |
| 1110 | |
| 1111 | VPRINTK("sixteen-byte command\n"); |
| 1112 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1113 | lba |= ((u64)cdb[2]) << 56; |
| 1114 | lba |= ((u64)cdb[3]) << 48; |
| 1115 | lba |= ((u64)cdb[4]) << 40; |
| 1116 | lba |= ((u64)cdb[5]) << 32; |
| 1117 | lba |= ((u64)cdb[6]) << 24; |
| 1118 | lba |= ((u64)cdb[7]) << 16; |
| 1119 | lba |= ((u64)cdb[8]) << 8; |
| 1120 | lba |= ((u64)cdb[9]); |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1121 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1122 | len |= ((u32)cdb[10]) << 24; |
| 1123 | len |= ((u32)cdb[11]) << 16; |
| 1124 | len |= ((u32)cdb[12]) << 8; |
| 1125 | len |= ((u32)cdb[13]); |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1126 | |
| 1127 | *plba = lba; |
| 1128 | *plen = len; |
| 1129 | } |
| 1130 | |
| 1131 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1132 | * ata_scsi_verify_xlat - Translate SCSI VERIFY command into an ATA one |
| 1133 | * @qc: Storage for translated ATA taskfile |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | * |
| 1135 | * Converts SCSI VERIFY command to an ATA READ VERIFY command. |
| 1136 | * |
| 1137 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1138 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1139 | * |
| 1140 | * RETURNS: |
| 1141 | * Zero on success, non-zero on error. |
| 1142 | */ |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 1143 | static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1144 | { |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1145 | struct scsi_cmnd *scmd = qc->scsicmd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1146 | struct ata_taskfile *tf = &qc->tf; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1147 | struct ata_device *dev = qc->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1148 | u64 dev_sectors = qc->dev->n_sectors; |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 1149 | const u8 *cdb = scmd->cmnd; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1150 | u64 block; |
| 1151 | u32 n_block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1152 | |
| 1153 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 1154 | tf->protocol = ATA_PROT_NODATA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 1156 | if (cdb[0] == VERIFY) { |
| 1157 | if (scmd->cmd_len < 10) |
| 1158 | goto invalid_fld; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1159 | scsi_10_lba_len(cdb, &block, &n_block); |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 1160 | } else if (cdb[0] == VERIFY_16) { |
| 1161 | if (scmd->cmd_len < 16) |
| 1162 | goto invalid_fld; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1163 | scsi_16_lba_len(cdb, &block, &n_block); |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 1164 | } else |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1165 | goto invalid_fld; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1166 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1167 | if (!n_block) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1168 | goto nothing_to_do; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1169 | if (block >= dev_sectors) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1170 | goto out_of_range; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1171 | if ((block + n_block) > dev_sectors) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1172 | goto out_of_range; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | |
Albert Lee | 0750669 | 2005-10-12 15:04:18 +0800 | [diff] [blame] | 1174 | if (dev->flags & ATA_DFLAG_LBA) { |
| 1175 | tf->flags |= ATA_TFLAG_LBA; |
| 1176 | |
Albert Lee | c6a33e2 | 2005-10-12 15:12:26 +0800 | [diff] [blame] | 1177 | if (lba_28_ok(block, n_block)) { |
| 1178 | /* use LBA28 */ |
| 1179 | tf->command = ATA_CMD_VERIFY; |
| 1180 | tf->device |= (block >> 24) & 0xf; |
| 1181 | } else if (lba_48_ok(block, n_block)) { |
| 1182 | if (!(dev->flags & ATA_DFLAG_LBA48)) |
| 1183 | goto out_of_range; |
Albert Lee | 0750669 | 2005-10-12 15:04:18 +0800 | [diff] [blame] | 1184 | |
| 1185 | /* use LBA48 */ |
| 1186 | tf->flags |= ATA_TFLAG_LBA48; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1187 | tf->command = ATA_CMD_VERIFY_EXT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1188 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1189 | tf->hob_nsect = (n_block >> 8) & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1190 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1191 | tf->hob_lbah = (block >> 40) & 0xff; |
| 1192 | tf->hob_lbam = (block >> 32) & 0xff; |
| 1193 | tf->hob_lbal = (block >> 24) & 0xff; |
Albert Lee | c6a33e2 | 2005-10-12 15:12:26 +0800 | [diff] [blame] | 1194 | } else |
| 1195 | /* request too large even for LBA48 */ |
| 1196 | goto out_of_range; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1197 | |
| 1198 | tf->nsect = n_block & 0xff; |
| 1199 | |
| 1200 | tf->lbah = (block >> 16) & 0xff; |
| 1201 | tf->lbam = (block >> 8) & 0xff; |
| 1202 | tf->lbal = block & 0xff; |
| 1203 | |
| 1204 | tf->device |= ATA_LBA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1205 | } else { |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1206 | /* CHS */ |
| 1207 | u32 sect, head, cyl, track; |
| 1208 | |
Albert Lee | c6a33e2 | 2005-10-12 15:12:26 +0800 | [diff] [blame] | 1209 | if (!lba_28_ok(block, n_block)) |
| 1210 | goto out_of_range; |
Albert Lee | 0750669 | 2005-10-12 15:04:18 +0800 | [diff] [blame] | 1211 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1212 | /* Convert LBA to CHS */ |
| 1213 | track = (u32)block / dev->sectors; |
| 1214 | cyl = track / dev->heads; |
| 1215 | head = track % dev->heads; |
| 1216 | sect = (u32)block % dev->sectors + 1; |
| 1217 | |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1218 | DPRINTK("block %u track %u cyl %u head %u sect %u\n", |
| 1219 | (u32)block, track, cyl, head, sect); |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 1220 | |
| 1221 | /* Check whether the converted CHS can fit. |
| 1222 | Cylinder: 0-65535 |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1223 | Head: 0-15 |
| 1224 | Sector: 1-255*/ |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 1225 | if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect)) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1226 | goto out_of_range; |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 1227 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1228 | tf->command = ATA_CMD_VERIFY; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1229 | tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */ |
| 1230 | tf->lbal = sect; |
| 1231 | tf->lbam = cyl; |
| 1232 | tf->lbah = cyl >> 8; |
| 1233 | tf->device |= head; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1234 | } |
| 1235 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1236 | return 0; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1237 | |
| 1238 | invalid_fld: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1239 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1240 | /* "Invalid field in cbd" */ |
| 1241 | return 1; |
| 1242 | |
| 1243 | out_of_range: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1244 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1245 | /* "Logical Block Address out of range" */ |
| 1246 | return 1; |
| 1247 | |
| 1248 | nothing_to_do: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1249 | scmd->result = SAM_STAT_GOOD; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1250 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1251 | } |
| 1252 | |
| 1253 | /** |
| 1254 | * ata_scsi_rw_xlat - Translate SCSI r/w command into an ATA one |
| 1255 | * @qc: Storage for translated ATA taskfile |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1256 | * |
| 1257 | * Converts any of six SCSI read/write commands into the |
| 1258 | * ATA counterpart, including starting sector (LBA), |
| 1259 | * sector count, and taking into account the device's LBA48 |
| 1260 | * support. |
| 1261 | * |
| 1262 | * Commands %READ_6, %READ_10, %READ_16, %WRITE_6, %WRITE_10, and |
| 1263 | * %WRITE_16 are currently supported. |
| 1264 | * |
| 1265 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1266 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1267 | * |
| 1268 | * RETURNS: |
| 1269 | * Zero on success, non-zero on error. |
| 1270 | */ |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 1271 | static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1272 | { |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1273 | struct scsi_cmnd *scmd = qc->scsicmd; |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 1274 | const u8 *cdb = scmd->cmnd; |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 1275 | unsigned int tf_flags = 0; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1276 | u64 block; |
| 1277 | u32 n_block; |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 1278 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1279 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1280 | if (cdb[0] == WRITE_10 || cdb[0] == WRITE_6 || cdb[0] == WRITE_16) |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 1281 | tf_flags |= ATA_TFLAG_WRITE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1282 | |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 1283 | /* Calculate the SCSI LBA, transfer length and FUA. */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1284 | switch (cdb[0]) { |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1285 | case READ_10: |
| 1286 | case WRITE_10: |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 1287 | if (unlikely(scmd->cmd_len < 10)) |
| 1288 | goto invalid_fld; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1289 | scsi_10_lba_len(cdb, &block, &n_block); |
| 1290 | if (unlikely(cdb[1] & (1 << 3))) |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 1291 | tf_flags |= ATA_TFLAG_FUA; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1292 | break; |
| 1293 | case READ_6: |
| 1294 | case WRITE_6: |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 1295 | if (unlikely(scmd->cmd_len < 6)) |
| 1296 | goto invalid_fld; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1297 | scsi_6_lba_len(cdb, &block, &n_block); |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1298 | |
| 1299 | /* for 6-byte r/w commands, transfer length 0 |
| 1300 | * means 256 blocks of data, not 0 block. |
| 1301 | */ |
Jeff Garzik | 76b2bf9 | 2005-08-29 19:24:43 -0400 | [diff] [blame] | 1302 | if (!n_block) |
| 1303 | n_block = 256; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1304 | break; |
| 1305 | case READ_16: |
| 1306 | case WRITE_16: |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 1307 | if (unlikely(scmd->cmd_len < 16)) |
| 1308 | goto invalid_fld; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1309 | scsi_16_lba_len(cdb, &block, &n_block); |
| 1310 | if (unlikely(cdb[1] & (1 << 3))) |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 1311 | tf_flags |= ATA_TFLAG_FUA; |
Albert Lee | 3aef523 | 2005-10-04 08:47:43 -0400 | [diff] [blame] | 1312 | break; |
| 1313 | default: |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1314 | DPRINTK("no-byte command\n"); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1315 | goto invalid_fld; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1316 | } |
| 1317 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1318 | /* Check and compose ATA command */ |
| 1319 | if (!n_block) |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1320 | /* For 10-byte and 16-byte SCSI R/W commands, transfer |
| 1321 | * length 0 means transfer 0 block of data. |
| 1322 | * However, for ATA R/W commands, sector count 0 means |
| 1323 | * 256 or 65536 sectors, not 0 sectors as in SCSI. |
Alan Cox | f51750d | 2005-11-07 17:06:33 +0000 | [diff] [blame] | 1324 | * |
| 1325 | * WARNING: one or two older ATA drives treat 0 as 0... |
Albert Lee | c187c4b | 2005-10-04 08:46:51 -0400 | [diff] [blame] | 1326 | */ |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1327 | goto nothing_to_do; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 1328 | |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 1329 | qc->flags |= ATA_QCFLAG_IO; |
Tejun Heo | 726f078 | 2007-01-03 17:30:39 +0900 | [diff] [blame] | 1330 | qc->nbytes = n_block * ATA_SECT_SIZE; |
Tejun Heo | 3dc1d88 | 2006-05-15 21:03:45 +0900 | [diff] [blame] | 1331 | |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 1332 | rc = ata_build_rw_tf(&qc->tf, qc->dev, block, n_block, tf_flags, |
| 1333 | qc->tag); |
| 1334 | if (likely(rc == 0)) |
| 1335 | return 0; |
Tejun Heo | 3dc1d88 | 2006-05-15 21:03:45 +0900 | [diff] [blame] | 1336 | |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 1337 | if (rc == -ERANGE) |
| 1338 | goto out_of_range; |
| 1339 | /* treat all other errors as -EINVAL, fall through */ |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1340 | invalid_fld: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1341 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1342 | /* "Invalid field in cbd" */ |
| 1343 | return 1; |
| 1344 | |
| 1345 | out_of_range: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1346 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1347 | /* "Logical Block Address out of range" */ |
| 1348 | return 1; |
| 1349 | |
| 1350 | nothing_to_do: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 1351 | scmd->result = SAM_STAT_GOOD; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1352 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1353 | } |
| 1354 | |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1355 | static void ata_scsi_qc_complete(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1356 | { |
Tejun Heo | c31f571 | 2006-11-22 12:39:43 +0900 | [diff] [blame] | 1357 | struct ata_port *ap = qc->ap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1358 | struct scsi_cmnd *cmd = qc->scsicmd; |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 1359 | u8 *cdb = cmd->cmnd; |
Albert Lee | a22e2eb | 2005-12-05 15:38:02 +0800 | [diff] [blame] | 1360 | int need_sense = (qc->err_mask != 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 1362 | /* We snoop the SET_FEATURES - Write Cache ON/OFF command, and |
| 1363 | * schedule EH_REVALIDATE operation to update the IDENTIFY DEVICE |
| 1364 | * cache |
| 1365 | */ |
Albert Lee | 2c3d2a4 | 2007-06-07 16:01:17 +0800 | [diff] [blame] | 1366 | if (ap->ops->error_handler && !need_sense) { |
| 1367 | switch (qc->tf.command) { |
| 1368 | case ATA_CMD_SET_FEATURES: |
| 1369 | if ((qc->tf.feature == SETFEATURES_WC_ON) || |
| 1370 | (qc->tf.feature == SETFEATURES_WC_OFF)) { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame^] | 1371 | ap->link.eh_info.action |= ATA_EH_REVALIDATE; |
Albert Lee | 2c3d2a4 | 2007-06-07 16:01:17 +0800 | [diff] [blame] | 1372 | ata_port_schedule_eh(ap); |
| 1373 | } |
| 1374 | break; |
| 1375 | |
| 1376 | case ATA_CMD_INIT_DEV_PARAMS: /* CHS translation changed */ |
| 1377 | case ATA_CMD_SET_MULTI: /* multi_count changed */ |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame^] | 1378 | ap->link.eh_info.action |= ATA_EH_REVALIDATE; |
Albert Lee | 2c3d2a4 | 2007-06-07 16:01:17 +0800 | [diff] [blame] | 1379 | ata_port_schedule_eh(ap); |
| 1380 | break; |
| 1381 | } |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 1382 | } |
| 1383 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1384 | /* For ATA pass thru (SAT) commands, generate a sense block if |
| 1385 | * user mandated it or if there's an error. Note that if we |
| 1386 | * generate because the user forced us to, a check condition |
| 1387 | * is generated and the ATA register values are returned |
| 1388 | * whether the command completed successfully or not. If there |
| 1389 | * was no error, SK, ASC and ASCQ will all be zero. |
| 1390 | */ |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 1391 | if (((cdb[0] == ATA_16) || (cdb[0] == ATA_12)) && |
| 1392 | ((cdb[2] & 0x20) || need_sense)) { |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 1393 | ata_gen_passthru_sense(qc); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1394 | } else { |
| 1395 | if (!need_sense) { |
| 1396 | cmd->result = SAM_STAT_GOOD; |
| 1397 | } else { |
| 1398 | /* TODO: decide which descriptor format to use |
| 1399 | * for 48b LBA devices and call that here |
| 1400 | * instead of the fixed desc, which is only |
| 1401 | * good for smaller LBA (and maybe CHS?) |
| 1402 | * devices. |
| 1403 | */ |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 1404 | ata_gen_ata_sense(qc); |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 1405 | } |
| 1406 | } |
| 1407 | |
Tejun Heo | d9aca22 | 2007-05-17 16:43:26 +0200 | [diff] [blame] | 1408 | /* XXX: track spindown state for spindown skipping and warning */ |
Tejun Heo | 13b8d09 | 2007-05-15 12:29:22 +0200 | [diff] [blame] | 1409 | if (unlikely(qc->tf.command == ATA_CMD_STANDBY || |
| 1410 | qc->tf.command == ATA_CMD_STANDBYNOW1)) |
| 1411 | qc->dev->flags |= ATA_DFLAG_SPUNDOWN; |
| 1412 | else if (likely(system_state != SYSTEM_HALT && |
| 1413 | system_state != SYSTEM_POWER_OFF)) |
| 1414 | qc->dev->flags &= ~ATA_DFLAG_SPUNDOWN; |
| 1415 | |
Tejun Heo | c31f571 | 2006-11-22 12:39:43 +0900 | [diff] [blame] | 1416 | if (need_sense && !ap->ops->error_handler) |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 1417 | ata_dump_status(ap->print_id, &qc->result_tf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1418 | |
| 1419 | qc->scsidone(cmd); |
| 1420 | |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1421 | ata_qc_free(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1422 | } |
| 1423 | |
| 1424 | /** |
Tejun Heo | 3dc1d88 | 2006-05-15 21:03:45 +0900 | [diff] [blame] | 1425 | * ata_scmd_need_defer - Check whether we need to defer scmd |
| 1426 | * @dev: ATA device to which the command is addressed |
| 1427 | * @is_io: Is the command IO (and thus possibly NCQ)? |
| 1428 | * |
| 1429 | * NCQ and non-NCQ commands cannot run together. As upper layer |
| 1430 | * only knows the queue depth, we are responsible for maintaining |
| 1431 | * exclusion. This function checks whether a new command can be |
| 1432 | * issued to @dev. |
| 1433 | * |
| 1434 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1435 | * spin_lock_irqsave(host lock) |
Tejun Heo | 3dc1d88 | 2006-05-15 21:03:45 +0900 | [diff] [blame] | 1436 | * |
| 1437 | * RETURNS: |
| 1438 | * 1 if deferring is needed, 0 otherwise. |
| 1439 | */ |
| 1440 | static int ata_scmd_need_defer(struct ata_device *dev, int is_io) |
| 1441 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame^] | 1442 | struct ata_link *link = dev->link; |
Tejun Heo | fcf1bf1 | 2007-02-20 23:27:06 +0900 | [diff] [blame] | 1443 | int is_ncq = is_io && ata_ncq_enabled(dev); |
Tejun Heo | 3dc1d88 | 2006-05-15 21:03:45 +0900 | [diff] [blame] | 1444 | |
Tejun Heo | fcf1bf1 | 2007-02-20 23:27:06 +0900 | [diff] [blame] | 1445 | if (is_ncq) { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame^] | 1446 | if (!ata_tag_valid(link->active_tag)) |
Tejun Heo | 3dc1d88 | 2006-05-15 21:03:45 +0900 | [diff] [blame] | 1447 | return 0; |
| 1448 | } else { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame^] | 1449 | if (!ata_tag_valid(link->active_tag) && !link->sactive) |
Tejun Heo | 3dc1d88 | 2006-05-15 21:03:45 +0900 | [diff] [blame] | 1450 | return 0; |
| 1451 | } |
| 1452 | return 1; |
| 1453 | } |
| 1454 | |
| 1455 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1456 | * ata_scsi_translate - Translate then issue SCSI command to ATA device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1457 | * @dev: ATA device to which the command is addressed |
| 1458 | * @cmd: SCSI command to execute |
| 1459 | * @done: SCSI command completion function |
| 1460 | * @xlat_func: Actor which translates @cmd to an ATA taskfile |
| 1461 | * |
| 1462 | * Our ->queuecommand() function has decided that the SCSI |
| 1463 | * command issued can be directly translated into an ATA |
| 1464 | * command, rather than handled internally. |
| 1465 | * |
| 1466 | * This function sets up an ata_queued_cmd structure for the |
| 1467 | * SCSI command, and sends that ata_queued_cmd to the hardware. |
| 1468 | * |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1469 | * The xlat_func argument (actor) returns 0 if ready to execute |
| 1470 | * ATA command, else 1 to finish translation. If 1 is returned |
| 1471 | * then cmd->result (and possibly cmd->sense_buffer) are assumed |
| 1472 | * to be set reflecting an error condition or clean (early) |
| 1473 | * termination. |
| 1474 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1475 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1476 | * spin_lock_irqsave(host lock) |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 1477 | * |
| 1478 | * RETURNS: |
| 1479 | * 0 on success, SCSI_ML_QUEUE_DEVICE_BUSY if the command |
| 1480 | * needs to be deferred. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1481 | */ |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 1482 | static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd, |
| 1483 | void (*done)(struct scsi_cmnd *), |
| 1484 | ata_xlat_func_t xlat_func) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1485 | { |
| 1486 | struct ata_queued_cmd *qc; |
Tejun Heo | 3dc1d88 | 2006-05-15 21:03:45 +0900 | [diff] [blame] | 1487 | int is_io = xlat_func == ata_scsi_rw_xlat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1488 | |
| 1489 | VPRINTK("ENTER\n"); |
| 1490 | |
Tejun Heo | 3dc1d88 | 2006-05-15 21:03:45 +0900 | [diff] [blame] | 1491 | if (unlikely(ata_scmd_need_defer(dev, is_io))) |
| 1492 | goto defer; |
| 1493 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 1494 | qc = ata_scsi_qc_new(dev, cmd, done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1495 | if (!qc) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1496 | goto err_mem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1497 | |
| 1498 | /* data is present; dma-map it */ |
| be7db05 | 2005-04-17 15:26:13 -0500 | [diff] [blame] | 1499 | if (cmd->sc_data_direction == DMA_FROM_DEVICE || |
| 1500 | cmd->sc_data_direction == DMA_TO_DEVICE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1501 | if (unlikely(cmd->request_bufflen < 1)) { |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 1502 | ata_dev_printk(dev, KERN_WARNING, |
| 1503 | "WARNING: zero len r/w req\n"); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1504 | goto err_did; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1505 | } |
| 1506 | |
| 1507 | if (cmd->use_sg) |
| 1508 | ata_sg_init(qc, cmd->request_buffer, cmd->use_sg); |
| 1509 | else |
| 1510 | ata_sg_init_one(qc, cmd->request_buffer, |
| 1511 | cmd->request_bufflen); |
| 1512 | |
| 1513 | qc->dma_dir = cmd->sc_data_direction; |
| 1514 | } |
| 1515 | |
| 1516 | qc->complete_fn = ata_scsi_qc_complete; |
| 1517 | |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 1518 | if (xlat_func(qc)) |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1519 | goto early_finish; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1520 | |
| 1521 | /* select device, send command to hardware */ |
Tejun Heo | 8e0e694 | 2006-03-31 20:41:11 +0900 | [diff] [blame] | 1522 | ata_qc_issue(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1523 | |
| 1524 | VPRINTK("EXIT\n"); |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 1525 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1526 | |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1527 | early_finish: |
| 1528 | ata_qc_free(qc); |
Tejun Heo | da071b4 | 2007-05-14 17:26:18 +0200 | [diff] [blame] | 1529 | qc->scsidone(cmd); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1530 | DPRINTK("EXIT - early finish (good or error)\n"); |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 1531 | return 0; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1532 | |
| 1533 | err_did: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1534 | ata_qc_free(qc); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1535 | cmd->result = (DID_ERROR << 16); |
Tejun Heo | da071b4 | 2007-05-14 17:26:18 +0200 | [diff] [blame] | 1536 | qc->scsidone(cmd); |
Darrick J. Wong | 253b92e | 2006-11-14 09:55:41 -0500 | [diff] [blame] | 1537 | err_mem: |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1538 | DPRINTK("EXIT - internal\n"); |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 1539 | return 0; |
Tejun Heo | 3dc1d88 | 2006-05-15 21:03:45 +0900 | [diff] [blame] | 1540 | |
| 1541 | defer: |
| 1542 | DPRINTK("EXIT - defer\n"); |
| 1543 | return SCSI_MLQUEUE_DEVICE_BUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1544 | } |
| 1545 | |
| 1546 | /** |
| 1547 | * ata_scsi_rbuf_get - Map response buffer. |
| 1548 | * @cmd: SCSI command containing buffer to be mapped. |
| 1549 | * @buf_out: Pointer to mapped area. |
| 1550 | * |
| 1551 | * Maps buffer contained within SCSI command @cmd. |
| 1552 | * |
| 1553 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1554 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1555 | * |
| 1556 | * RETURNS: |
| 1557 | * Length of response buffer. |
| 1558 | */ |
| 1559 | |
| 1560 | static unsigned int ata_scsi_rbuf_get(struct scsi_cmnd *cmd, u8 **buf_out) |
| 1561 | { |
| 1562 | u8 *buf; |
| 1563 | unsigned int buflen; |
| 1564 | |
| 1565 | if (cmd->use_sg) { |
| 1566 | struct scatterlist *sg; |
| 1567 | |
| 1568 | sg = (struct scatterlist *) cmd->request_buffer; |
Jeff Garzik | da02d2a | 2006-12-11 11:05:53 -0500 | [diff] [blame] | 1569 | buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1570 | buflen = sg->length; |
| 1571 | } else { |
| 1572 | buf = cmd->request_buffer; |
| 1573 | buflen = cmd->request_bufflen; |
| 1574 | } |
| 1575 | |
| 1576 | *buf_out = buf; |
| 1577 | return buflen; |
| 1578 | } |
| 1579 | |
| 1580 | /** |
| 1581 | * ata_scsi_rbuf_put - Unmap response buffer. |
| 1582 | * @cmd: SCSI command containing buffer to be unmapped. |
| 1583 | * @buf: buffer to unmap |
| 1584 | * |
| 1585 | * Unmaps response buffer contained within @cmd. |
| 1586 | * |
| 1587 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1588 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1589 | */ |
| 1590 | |
| 1591 | static inline void ata_scsi_rbuf_put(struct scsi_cmnd *cmd, u8 *buf) |
| 1592 | { |
| 1593 | if (cmd->use_sg) { |
| 1594 | struct scatterlist *sg; |
| 1595 | |
| 1596 | sg = (struct scatterlist *) cmd->request_buffer; |
Jeff Garzik | da02d2a | 2006-12-11 11:05:53 -0500 | [diff] [blame] | 1597 | kunmap_atomic(buf - sg->offset, KM_IRQ0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1598 | } |
| 1599 | } |
| 1600 | |
| 1601 | /** |
| 1602 | * ata_scsi_rbuf_fill - wrapper for SCSI command simulators |
| 1603 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1604 | * @actor: Callback hook for desired SCSI command simulator |
| 1605 | * |
| 1606 | * Takes care of the hard work of simulating a SCSI command... |
| 1607 | * Mapping the response buffer, calling the command's handler, |
| 1608 | * and handling the handler's return value. This return value |
| 1609 | * indicates whether the handler wishes the SCSI command to be |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1610 | * completed successfully (0), or not (in which case cmd->result |
| 1611 | * and sense buffer are assumed to be set). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1612 | * |
| 1613 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1614 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1615 | */ |
| 1616 | |
| 1617 | void ata_scsi_rbuf_fill(struct ata_scsi_args *args, |
| 1618 | unsigned int (*actor) (struct ata_scsi_args *args, |
| 1619 | u8 *rbuf, unsigned int buflen)) |
| 1620 | { |
| 1621 | u8 *rbuf; |
| 1622 | unsigned int buflen, rc; |
| 1623 | struct scsi_cmnd *cmd = args->cmd; |
| 1624 | |
| 1625 | buflen = ata_scsi_rbuf_get(cmd, &rbuf); |
| 1626 | memset(rbuf, 0, buflen); |
| 1627 | rc = actor(args, rbuf, buflen); |
| 1628 | ata_scsi_rbuf_put(cmd, rbuf); |
| 1629 | |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1630 | if (rc == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1631 | cmd->result = SAM_STAT_GOOD; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1632 | args->done(cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1633 | } |
| 1634 | |
| 1635 | /** |
Tejun Heo | 6a36261 | 2006-11-20 11:15:47 +0900 | [diff] [blame] | 1636 | * ATA_SCSI_RBUF_SET - helper to set values in SCSI response buffer |
| 1637 | * @idx: byte index into SCSI response buffer |
| 1638 | * @val: value to set |
| 1639 | * |
| 1640 | * To be used by SCSI command simulator functions. This macros |
| 1641 | * expects two local variables, u8 *rbuf and unsigned int buflen, |
| 1642 | * are in scope. |
| 1643 | * |
| 1644 | * LOCKING: |
| 1645 | * None. |
| 1646 | */ |
| 1647 | #define ATA_SCSI_RBUF_SET(idx, val) do { \ |
| 1648 | if ((idx) < buflen) rbuf[(idx)] = (u8)(val); \ |
| 1649 | } while (0) |
| 1650 | |
| 1651 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1652 | * ata_scsiop_inq_std - Simulate INQUIRY command |
| 1653 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1654 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 1655 | * @buflen: Response buffer length. |
| 1656 | * |
| 1657 | * Returns standard device identification data associated |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1658 | * with non-VPD INQUIRY command output. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1659 | * |
| 1660 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1661 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1662 | */ |
| 1663 | |
| 1664 | unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf, |
| 1665 | unsigned int buflen) |
| 1666 | { |
| 1667 | u8 hdr[] = { |
| 1668 | TYPE_DISK, |
| 1669 | 0, |
| 1670 | 0x5, /* claim SPC-3 version compatibility */ |
| 1671 | 2, |
| 1672 | 95 - 4 |
| 1673 | }; |
| 1674 | |
| 1675 | /* set scsi removeable (RMB) bit per ata bit */ |
| 1676 | if (ata_id_removeable(args->id)) |
| 1677 | hdr[1] |= (1 << 7); |
| 1678 | |
| 1679 | VPRINTK("ENTER\n"); |
| 1680 | |
| 1681 | memcpy(rbuf, hdr, sizeof(hdr)); |
| 1682 | |
| 1683 | if (buflen > 35) { |
| 1684 | memcpy(&rbuf[8], "ATA ", 8); |
Tejun Heo | a0cf733 | 2007-01-02 20:18:49 +0900 | [diff] [blame] | 1685 | ata_id_string(args->id, &rbuf[16], ATA_ID_PROD, 16); |
| 1686 | ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV, 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1687 | if (rbuf[32] == 0 || rbuf[32] == ' ') |
| 1688 | memcpy(&rbuf[32], "n/a ", 4); |
| 1689 | } |
| 1690 | |
| 1691 | if (buflen > 63) { |
| 1692 | const u8 versions[] = { |
| 1693 | 0x60, /* SAM-3 (no version claimed) */ |
| 1694 | |
| 1695 | 0x03, |
| 1696 | 0x20, /* SBC-2 (no version claimed) */ |
| 1697 | |
| 1698 | 0x02, |
| 1699 | 0x60 /* SPC-3 (no version claimed) */ |
| 1700 | }; |
| 1701 | |
| 1702 | memcpy(rbuf + 59, versions, sizeof(versions)); |
| 1703 | } |
| 1704 | |
| 1705 | return 0; |
| 1706 | } |
| 1707 | |
| 1708 | /** |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1709 | * ata_scsiop_inq_00 - Simulate INQUIRY VPD page 0, list of pages |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1710 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1711 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 1712 | * @buflen: Response buffer length. |
| 1713 | * |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1714 | * Returns list of inquiry VPD pages available. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1715 | * |
| 1716 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1717 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1718 | */ |
| 1719 | |
| 1720 | unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf, |
| 1721 | unsigned int buflen) |
| 1722 | { |
| 1723 | const u8 pages[] = { |
| 1724 | 0x00, /* page 0x00, this page */ |
| 1725 | 0x80, /* page 0x80, unit serial no page */ |
| 1726 | 0x83 /* page 0x83, device ident page */ |
| 1727 | }; |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1728 | rbuf[3] = sizeof(pages); /* number of supported VPD pages */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1729 | |
| 1730 | if (buflen > 6) |
| 1731 | memcpy(rbuf + 4, pages, sizeof(pages)); |
| 1732 | |
| 1733 | return 0; |
| 1734 | } |
| 1735 | |
| 1736 | /** |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1737 | * ata_scsiop_inq_80 - Simulate INQUIRY VPD page 80, device serial number |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1738 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1739 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 1740 | * @buflen: Response buffer length. |
| 1741 | * |
| 1742 | * Returns ATA device serial number. |
| 1743 | * |
| 1744 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1745 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1746 | */ |
| 1747 | |
| 1748 | unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf, |
| 1749 | unsigned int buflen) |
| 1750 | { |
| 1751 | const u8 hdr[] = { |
| 1752 | 0, |
| 1753 | 0x80, /* this page code */ |
| 1754 | 0, |
Tejun Heo | a0cf733 | 2007-01-02 20:18:49 +0900 | [diff] [blame] | 1755 | ATA_ID_SERNO_LEN, /* page len */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1756 | }; |
| 1757 | memcpy(rbuf, hdr, sizeof(hdr)); |
| 1758 | |
Tejun Heo | a0cf733 | 2007-01-02 20:18:49 +0900 | [diff] [blame] | 1759 | if (buflen > (ATA_ID_SERNO_LEN + 4 - 1)) |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 1760 | ata_id_string(args->id, (unsigned char *) &rbuf[4], |
Tejun Heo | a0cf733 | 2007-01-02 20:18:49 +0900 | [diff] [blame] | 1761 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1762 | |
| 1763 | return 0; |
| 1764 | } |
| 1765 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1766 | /** |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1767 | * ata_scsiop_inq_83 - Simulate INQUIRY VPD page 83, device identity |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1768 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1769 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 1770 | * @buflen: Response buffer length. |
| 1771 | * |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1772 | * Yields two logical unit device identification designators: |
| 1773 | * - vendor specific ASCII containing the ATA serial number |
| 1774 | * - SAT defined "t10 vendor id based" containing ASCII vendor |
| 1775 | * name ("ATA "), model and serial numbers. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1776 | * |
| 1777 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1778 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1779 | */ |
| 1780 | |
| 1781 | unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf, |
| 1782 | unsigned int buflen) |
| 1783 | { |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1784 | int num; |
| 1785 | const int sat_model_serial_desc_len = 68; |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1786 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1787 | rbuf[1] = 0x83; /* this page code */ |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1788 | num = 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1789 | |
Tejun Heo | a0cf733 | 2007-01-02 20:18:49 +0900 | [diff] [blame] | 1790 | if (buflen > (ATA_ID_SERNO_LEN + num + 3)) { |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1791 | /* piv=0, assoc=lu, code_set=ACSII, designator=vendor */ |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 1792 | rbuf[num + 0] = 2; |
Tejun Heo | a0cf733 | 2007-01-02 20:18:49 +0900 | [diff] [blame] | 1793 | rbuf[num + 3] = ATA_ID_SERNO_LEN; |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1794 | num += 4; |
| 1795 | ata_id_string(args->id, (unsigned char *) rbuf + num, |
Tejun Heo | a0cf733 | 2007-01-02 20:18:49 +0900 | [diff] [blame] | 1796 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); |
| 1797 | num += ATA_ID_SERNO_LEN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1798 | } |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1799 | if (buflen > (sat_model_serial_desc_len + num + 3)) { |
| 1800 | /* SAT defined lu model and serial numbers descriptor */ |
| 1801 | /* piv=0, assoc=lu, code_set=ACSII, designator=t10 vendor id */ |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 1802 | rbuf[num + 0] = 2; |
| 1803 | rbuf[num + 1] = 1; |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1804 | rbuf[num + 3] = sat_model_serial_desc_len; |
| 1805 | num += 4; |
| 1806 | memcpy(rbuf + num, "ATA ", 8); |
| 1807 | num += 8; |
| 1808 | ata_id_string(args->id, (unsigned char *) rbuf + num, |
Tejun Heo | a0cf733 | 2007-01-02 20:18:49 +0900 | [diff] [blame] | 1809 | ATA_ID_PROD, ATA_ID_PROD_LEN); |
| 1810 | num += ATA_ID_PROD_LEN; |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1811 | ata_id_string(args->id, (unsigned char *) rbuf + num, |
Tejun Heo | a0cf733 | 2007-01-02 20:18:49 +0900 | [diff] [blame] | 1812 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); |
| 1813 | num += ATA_ID_SERNO_LEN; |
Jeff Garzik | b142eb6 | 2006-03-21 20:37:47 -0500 | [diff] [blame] | 1814 | } |
| 1815 | rbuf[3] = num - 4; /* page len (assume less than 256 bytes) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1816 | return 0; |
| 1817 | } |
| 1818 | |
| 1819 | /** |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 1820 | * ata_scsiop_noop - Command handler that simply returns success. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1821 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1822 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 1823 | * @buflen: Response buffer length. |
| 1824 | * |
| 1825 | * No operation. Simply returns success to caller, to indicate |
| 1826 | * that the caller should successfully complete this SCSI command. |
| 1827 | * |
| 1828 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1829 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1830 | */ |
| 1831 | |
| 1832 | unsigned int ata_scsiop_noop(struct ata_scsi_args *args, u8 *rbuf, |
| 1833 | unsigned int buflen) |
| 1834 | { |
| 1835 | VPRINTK("ENTER\n"); |
| 1836 | return 0; |
| 1837 | } |
| 1838 | |
| 1839 | /** |
| 1840 | * ata_msense_push - Push data onto MODE SENSE data output buffer |
| 1841 | * @ptr_io: (input/output) Location to store more output data |
| 1842 | * @last: End of output data buffer |
| 1843 | * @buf: Pointer to BLOB being added to output buffer |
| 1844 | * @buflen: Length of BLOB |
| 1845 | * |
| 1846 | * Store MODE SENSE data on an output buffer. |
| 1847 | * |
| 1848 | * LOCKING: |
| 1849 | * None. |
| 1850 | */ |
| 1851 | |
| 1852 | static void ata_msense_push(u8 **ptr_io, const u8 *last, |
| 1853 | const u8 *buf, unsigned int buflen) |
| 1854 | { |
| 1855 | u8 *ptr = *ptr_io; |
| 1856 | |
| 1857 | if ((ptr + buflen - 1) > last) |
| 1858 | return; |
| 1859 | |
| 1860 | memcpy(ptr, buf, buflen); |
| 1861 | |
| 1862 | ptr += buflen; |
| 1863 | |
| 1864 | *ptr_io = ptr; |
| 1865 | } |
| 1866 | |
| 1867 | /** |
| 1868 | * ata_msense_caching - Simulate MODE SENSE caching info page |
| 1869 | * @id: device IDENTIFY data |
| 1870 | * @ptr_io: (input/output) Location to store more output data |
| 1871 | * @last: End of output data buffer |
| 1872 | * |
| 1873 | * Generate a caching info page, which conditionally indicates |
| 1874 | * write caching to the SCSI layer, depending on device |
| 1875 | * capabilities. |
| 1876 | * |
| 1877 | * LOCKING: |
| 1878 | * None. |
| 1879 | */ |
| 1880 | |
| 1881 | static unsigned int ata_msense_caching(u16 *id, u8 **ptr_io, |
| 1882 | const u8 *last) |
| 1883 | { |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1884 | u8 page[CACHE_MPAGE_LEN]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1885 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1886 | memcpy(page, def_cache_mpage, sizeof(page)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1887 | if (ata_id_wcache_enabled(id)) |
| 1888 | page[2] |= (1 << 2); /* write cache enable */ |
| 1889 | if (!ata_id_rahead_enabled(id)) |
| 1890 | page[12] |= (1 << 5); /* disable read ahead */ |
| 1891 | |
| 1892 | ata_msense_push(ptr_io, last, page, sizeof(page)); |
| 1893 | return sizeof(page); |
| 1894 | } |
| 1895 | |
| 1896 | /** |
| 1897 | * ata_msense_ctl_mode - Simulate MODE SENSE control mode page |
| 1898 | * @dev: Device associated with this MODE SENSE command |
| 1899 | * @ptr_io: (input/output) Location to store more output data |
| 1900 | * @last: End of output data buffer |
| 1901 | * |
| 1902 | * Generate a generic MODE SENSE control mode page. |
| 1903 | * |
| 1904 | * LOCKING: |
| 1905 | * None. |
| 1906 | */ |
| 1907 | |
| 1908 | static unsigned int ata_msense_ctl_mode(u8 **ptr_io, const u8 *last) |
| 1909 | { |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1910 | ata_msense_push(ptr_io, last, def_control_mpage, |
| 1911 | sizeof(def_control_mpage)); |
| 1912 | return sizeof(def_control_mpage); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1913 | } |
| 1914 | |
| 1915 | /** |
| 1916 | * ata_msense_rw_recovery - Simulate MODE SENSE r/w error recovery page |
| 1917 | * @dev: Device associated with this MODE SENSE command |
| 1918 | * @ptr_io: (input/output) Location to store more output data |
| 1919 | * @last: End of output data buffer |
| 1920 | * |
| 1921 | * Generate a generic MODE SENSE r/w error recovery page. |
| 1922 | * |
| 1923 | * LOCKING: |
| 1924 | * None. |
| 1925 | */ |
| 1926 | |
| 1927 | static unsigned int ata_msense_rw_recovery(u8 **ptr_io, const u8 *last) |
| 1928 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1929 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1930 | ata_msense_push(ptr_io, last, def_rw_recovery_mpage, |
| 1931 | sizeof(def_rw_recovery_mpage)); |
| 1932 | return sizeof(def_rw_recovery_mpage); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1933 | } |
| 1934 | |
Jens Axboe | 48bdc8e | 2006-01-30 16:09:35 +0100 | [diff] [blame] | 1935 | /* |
| 1936 | * We can turn this into a real blacklist if it's needed, for now just |
| 1937 | * blacklist any Maxtor BANC1G10 revision firmware |
| 1938 | */ |
| 1939 | static int ata_dev_supports_fua(u16 *id) |
| 1940 | { |
Tejun Heo | a0cf733 | 2007-01-02 20:18:49 +0900 | [diff] [blame] | 1941 | unsigned char model[ATA_ID_PROD_LEN + 1], fw[ATA_ID_FW_REV_LEN + 1]; |
Jens Axboe | 48bdc8e | 2006-01-30 16:09:35 +0100 | [diff] [blame] | 1942 | |
Jeff Garzik | c3c013a | 2006-02-27 22:31:19 -0500 | [diff] [blame] | 1943 | if (!libata_fua) |
| 1944 | return 0; |
Jens Axboe | 48bdc8e | 2006-01-30 16:09:35 +0100 | [diff] [blame] | 1945 | if (!ata_id_has_fua(id)) |
| 1946 | return 0; |
| 1947 | |
Tejun Heo | a0cf733 | 2007-01-02 20:18:49 +0900 | [diff] [blame] | 1948 | ata_id_c_string(id, model, ATA_ID_PROD, sizeof(model)); |
| 1949 | ata_id_c_string(id, fw, ATA_ID_FW_REV, sizeof(fw)); |
Jens Axboe | 48bdc8e | 2006-01-30 16:09:35 +0100 | [diff] [blame] | 1950 | |
Tejun Heo | 2e02671 | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 1951 | if (strcmp(model, "Maxtor")) |
Jens Axboe | 48bdc8e | 2006-01-30 16:09:35 +0100 | [diff] [blame] | 1952 | return 1; |
Tejun Heo | 2e02671 | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 1953 | if (strcmp(fw, "BANC1G10")) |
Jens Axboe | 48bdc8e | 2006-01-30 16:09:35 +0100 | [diff] [blame] | 1954 | return 1; |
| 1955 | |
| 1956 | return 0; /* blacklisted */ |
| 1957 | } |
| 1958 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1959 | /** |
| 1960 | * ata_scsiop_mode_sense - Simulate MODE SENSE 6, 10 commands |
| 1961 | * @args: device IDENTIFY data / SCSI command of interest. |
| 1962 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 1963 | * @buflen: Response buffer length. |
| 1964 | * |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1965 | * Simulate MODE SENSE commands. Assume this is invoked for direct |
| 1966 | * access devices (e.g. disks) only. There should be no block |
| 1967 | * descriptor for other device types. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1968 | * |
| 1969 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1970 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1971 | */ |
| 1972 | |
| 1973 | unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf, |
| 1974 | unsigned int buflen) |
| 1975 | { |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 1976 | struct ata_device *dev = args->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1977 | u8 *scsicmd = args->cmd->cmnd, *p, *last; |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1978 | const u8 sat_blk_desc[] = { |
| 1979 | 0, 0, 0, 0, /* number of blocks: sat unspecified */ |
| 1980 | 0, |
| 1981 | 0, 0x2, 0x0 /* block length: 512 bytes */ |
| 1982 | }; |
| 1983 | u8 pg, spg; |
| 1984 | unsigned int ebd, page_control, six_byte, output_len, alloc_len, minlen; |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 1985 | u8 dpofua; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1986 | |
| 1987 | VPRINTK("ENTER\n"); |
| 1988 | |
| 1989 | six_byte = (scsicmd[0] == MODE_SENSE); |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1990 | ebd = !(scsicmd[1] & 0x8); /* dbd bit inverted == edb */ |
| 1991 | /* |
| 1992 | * LLBA bit in msense(10) ignored (compliant) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1993 | */ |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 1994 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1995 | page_control = scsicmd[2] >> 6; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 1996 | switch (page_control) { |
| 1997 | case 0: /* current */ |
| 1998 | break; /* supported */ |
| 1999 | case 3: /* saved */ |
| 2000 | goto saving_not_supp; |
| 2001 | case 1: /* changeable */ |
| 2002 | case 2: /* defaults */ |
| 2003 | default: |
| 2004 | goto invalid_fld; |
| 2005 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2006 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2007 | if (six_byte) { |
| 2008 | output_len = 4 + (ebd ? 8 : 0); |
| 2009 | alloc_len = scsicmd[4]; |
| 2010 | } else { |
| 2011 | output_len = 8 + (ebd ? 8 : 0); |
| 2012 | alloc_len = (scsicmd[7] << 8) + scsicmd[8]; |
| 2013 | } |
| 2014 | minlen = (alloc_len < buflen) ? alloc_len : buflen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2015 | |
| 2016 | p = rbuf + output_len; |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2017 | last = rbuf + minlen - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2018 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2019 | pg = scsicmd[2] & 0x3f; |
| 2020 | spg = scsicmd[3]; |
| 2021 | /* |
| 2022 | * No mode subpages supported (yet) but asking for _all_ |
| 2023 | * subpages may be valid |
| 2024 | */ |
| 2025 | if (spg && (spg != ALL_SUB_MPAGES)) |
| 2026 | goto invalid_fld; |
| 2027 | |
| 2028 | switch(pg) { |
| 2029 | case RW_RECOVERY_MPAGE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2030 | output_len += ata_msense_rw_recovery(&p, last); |
| 2031 | break; |
| 2032 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2033 | case CACHE_MPAGE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2034 | output_len += ata_msense_caching(args->id, &p, last); |
| 2035 | break; |
| 2036 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2037 | case CONTROL_MPAGE: { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2038 | output_len += ata_msense_ctl_mode(&p, last); |
| 2039 | break; |
| 2040 | } |
| 2041 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2042 | case ALL_MPAGES: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2043 | output_len += ata_msense_rw_recovery(&p, last); |
| 2044 | output_len += ata_msense_caching(args->id, &p, last); |
| 2045 | output_len += ata_msense_ctl_mode(&p, last); |
| 2046 | break; |
| 2047 | |
| 2048 | default: /* invalid page code */ |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2049 | goto invalid_fld; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2050 | } |
| 2051 | |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2052 | if (minlen < 1) |
| 2053 | return 0; |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 2054 | |
| 2055 | dpofua = 0; |
Alan Cox | f79d409 | 2006-05-22 16:55:11 +0100 | [diff] [blame] | 2056 | if (ata_dev_supports_fua(args->id) && (dev->flags & ATA_DFLAG_LBA48) && |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 2057 | (!(dev->flags & ATA_DFLAG_PIO) || dev->multi_count)) |
| 2058 | dpofua = 1 << 4; |
| 2059 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2060 | if (six_byte) { |
| 2061 | output_len--; |
| 2062 | rbuf[0] = output_len; |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 2063 | if (minlen > 2) |
| 2064 | rbuf[2] |= dpofua; |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2065 | if (ebd) { |
| 2066 | if (minlen > 3) |
| 2067 | rbuf[3] = sizeof(sat_blk_desc); |
| 2068 | if (minlen > 11) |
| 2069 | memcpy(rbuf + 4, sat_blk_desc, |
| 2070 | sizeof(sat_blk_desc)); |
| 2071 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2072 | } else { |
| 2073 | output_len -= 2; |
| 2074 | rbuf[0] = output_len >> 8; |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2075 | if (minlen > 1) |
| 2076 | rbuf[1] = output_len; |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 2077 | if (minlen > 3) |
| 2078 | rbuf[3] |= dpofua; |
Douglas Gilbert | 00ac37f | 2005-10-28 15:58:28 -0400 | [diff] [blame] | 2079 | if (ebd) { |
| 2080 | if (minlen > 7) |
| 2081 | rbuf[7] = sizeof(sat_blk_desc); |
| 2082 | if (minlen > 15) |
| 2083 | memcpy(rbuf + 8, sat_blk_desc, |
| 2084 | sizeof(sat_blk_desc)); |
| 2085 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2086 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2087 | return 0; |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2088 | |
| 2089 | invalid_fld: |
| 2090 | ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x24, 0x0); |
| 2091 | /* "Invalid field in cbd" */ |
| 2092 | return 1; |
| 2093 | |
| 2094 | saving_not_supp: |
| 2095 | ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x39, 0x0); |
| 2096 | /* "Saving parameters not supported" */ |
| 2097 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2098 | } |
| 2099 | |
| 2100 | /** |
| 2101 | * ata_scsiop_read_cap - Simulate READ CAPACITY[ 16] commands |
| 2102 | * @args: device IDENTIFY data / SCSI command of interest. |
| 2103 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 2104 | * @buflen: Response buffer length. |
| 2105 | * |
| 2106 | * Simulate READ CAPACITY commands. |
| 2107 | * |
| 2108 | * LOCKING: |
Tejun Heo | 6a36261 | 2006-11-20 11:15:47 +0900 | [diff] [blame] | 2109 | * None. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2110 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2111 | unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf, |
| 2112 | unsigned int buflen) |
| 2113 | { |
Tejun Heo | 6a36261 | 2006-11-20 11:15:47 +0900 | [diff] [blame] | 2114 | u64 last_lba = args->dev->n_sectors - 1; /* LBA of the last block */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2115 | |
| 2116 | VPRINTK("ENTER\n"); |
| 2117 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2118 | if (args->cmd->cmnd[0] == READ_CAPACITY) { |
Tejun Heo | 6a36261 | 2006-11-20 11:15:47 +0900 | [diff] [blame] | 2119 | if (last_lba >= 0xffffffffULL) |
| 2120 | last_lba = 0xffffffff; |
Philip Pokorny | 0c144d0 | 2005-05-28 01:24:47 -0700 | [diff] [blame] | 2121 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2122 | /* sector count, 32-bit */ |
Tejun Heo | 6a36261 | 2006-11-20 11:15:47 +0900 | [diff] [blame] | 2123 | ATA_SCSI_RBUF_SET(0, last_lba >> (8 * 3)); |
| 2124 | ATA_SCSI_RBUF_SET(1, last_lba >> (8 * 2)); |
| 2125 | ATA_SCSI_RBUF_SET(2, last_lba >> (8 * 1)); |
| 2126 | ATA_SCSI_RBUF_SET(3, last_lba); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2127 | |
| 2128 | /* sector size */ |
Tejun Heo | 6a36261 | 2006-11-20 11:15:47 +0900 | [diff] [blame] | 2129 | ATA_SCSI_RBUF_SET(6, ATA_SECT_SIZE >> 8); |
| 2130 | ATA_SCSI_RBUF_SET(7, ATA_SECT_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2131 | } else { |
| 2132 | /* sector count, 64-bit */ |
Tejun Heo | 6a36261 | 2006-11-20 11:15:47 +0900 | [diff] [blame] | 2133 | ATA_SCSI_RBUF_SET(0, last_lba >> (8 * 7)); |
| 2134 | ATA_SCSI_RBUF_SET(1, last_lba >> (8 * 6)); |
| 2135 | ATA_SCSI_RBUF_SET(2, last_lba >> (8 * 5)); |
| 2136 | ATA_SCSI_RBUF_SET(3, last_lba >> (8 * 4)); |
| 2137 | ATA_SCSI_RBUF_SET(4, last_lba >> (8 * 3)); |
| 2138 | ATA_SCSI_RBUF_SET(5, last_lba >> (8 * 2)); |
| 2139 | ATA_SCSI_RBUF_SET(6, last_lba >> (8 * 1)); |
| 2140 | ATA_SCSI_RBUF_SET(7, last_lba); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2141 | |
| 2142 | /* sector size */ |
Tejun Heo | 6a36261 | 2006-11-20 11:15:47 +0900 | [diff] [blame] | 2143 | ATA_SCSI_RBUF_SET(10, ATA_SECT_SIZE >> 8); |
| 2144 | ATA_SCSI_RBUF_SET(11, ATA_SECT_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2145 | } |
| 2146 | |
| 2147 | return 0; |
| 2148 | } |
| 2149 | |
| 2150 | /** |
| 2151 | * ata_scsiop_report_luns - Simulate REPORT LUNS command |
| 2152 | * @args: device IDENTIFY data / SCSI command of interest. |
| 2153 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. |
| 2154 | * @buflen: Response buffer length. |
| 2155 | * |
| 2156 | * Simulate REPORT LUNS command. |
| 2157 | * |
| 2158 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2159 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2160 | */ |
| 2161 | |
| 2162 | unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf, |
| 2163 | unsigned int buflen) |
| 2164 | { |
| 2165 | VPRINTK("ENTER\n"); |
| 2166 | rbuf[3] = 8; /* just one lun, LUN 0, size 8 bytes */ |
| 2167 | |
| 2168 | return 0; |
| 2169 | } |
| 2170 | |
| 2171 | /** |
Douglas Gilbert | 845c583 | 2005-10-09 08:55:41 -0400 | [diff] [blame] | 2172 | * ata_scsi_set_sense - Set SCSI sense data and status |
| 2173 | * @cmd: SCSI request to be handled |
| 2174 | * @sk: SCSI-defined sense key |
| 2175 | * @asc: SCSI-defined additional sense code |
| 2176 | * @ascq: SCSI-defined additional sense code qualifier |
| 2177 | * |
| 2178 | * Helper function that builds a valid fixed format, current |
| 2179 | * response code and the given sense key (sk), additional sense |
| 2180 | * code (asc) and additional sense code qualifier (ascq) with |
| 2181 | * a SCSI command status of %SAM_STAT_CHECK_CONDITION and |
| 2182 | * DRIVER_SENSE set in the upper bits of scsi_cmnd::result . |
| 2183 | * |
| 2184 | * LOCKING: |
| 2185 | * Not required |
| 2186 | */ |
| 2187 | |
| 2188 | void ata_scsi_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq) |
| 2189 | { |
| 2190 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
| 2191 | |
| 2192 | cmd->sense_buffer[0] = 0x70; /* fixed format, current */ |
| 2193 | cmd->sense_buffer[2] = sk; |
| 2194 | cmd->sense_buffer[7] = 18 - 8; /* additional sense length */ |
| 2195 | cmd->sense_buffer[12] = asc; |
| 2196 | cmd->sense_buffer[13] = ascq; |
| 2197 | } |
| 2198 | |
| 2199 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2200 | * ata_scsi_badcmd - End a SCSI request with an error |
| 2201 | * @cmd: SCSI request to be handled |
| 2202 | * @done: SCSI command completion function |
| 2203 | * @asc: SCSI-defined additional sense code |
| 2204 | * @ascq: SCSI-defined additional sense code qualifier |
| 2205 | * |
| 2206 | * Helper function that completes a SCSI command with |
| 2207 | * %SAM_STAT_CHECK_CONDITION, with a sense key %ILLEGAL_REQUEST |
| 2208 | * and the specified additional sense codes. |
| 2209 | * |
| 2210 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2211 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2212 | */ |
| 2213 | |
| 2214 | void ata_scsi_badcmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), u8 asc, u8 ascq) |
| 2215 | { |
| 2216 | DPRINTK("ENTER\n"); |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2217 | ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, asc, ascq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2218 | |
| 2219 | done(cmd); |
| 2220 | } |
| 2221 | |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 2222 | static void atapi_sense_complete(struct ata_queued_cmd *qc) |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2223 | { |
Tejun Heo | 74e6c8c | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 2224 | if (qc->err_mask && ((qc->err_mask & AC_ERR_DEV) == 0)) { |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2225 | /* FIXME: not quite right; we don't want the |
| 2226 | * translation of taskfile registers into |
| 2227 | * a sense descriptors, since that's only |
| 2228 | * correct for ATA, not ATAPI |
| 2229 | */ |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 2230 | ata_gen_passthru_sense(qc); |
Tejun Heo | 74e6c8c | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 2231 | } |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2232 | |
| 2233 | qc->scsidone(qc->scsicmd); |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 2234 | ata_qc_free(qc); |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2235 | } |
| 2236 | |
| 2237 | /* is it pointless to prefer PIO for "safety reasons"? */ |
| 2238 | static inline int ata_pio_use_silly(struct ata_port *ap) |
| 2239 | { |
| 2240 | return (ap->flags & ATA_FLAG_PIO_DMA); |
| 2241 | } |
| 2242 | |
| 2243 | static void atapi_request_sense(struct ata_queued_cmd *qc) |
| 2244 | { |
| 2245 | struct ata_port *ap = qc->ap; |
| 2246 | struct scsi_cmnd *cmd = qc->scsicmd; |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2247 | |
| 2248 | DPRINTK("ATAPI request sense\n"); |
| 2249 | |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2250 | /* FIXME: is this needed? */ |
| 2251 | memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer)); |
| 2252 | |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2253 | ap->ops->tf_read(ap, &qc->tf); |
| 2254 | |
| 2255 | /* fill these in, for the case where they are -not- overwritten */ |
| 2256 | cmd->sense_buffer[0] = 0x70; |
| 2257 | cmd->sense_buffer[2] = qc->tf.feature >> 4; |
| 2258 | |
| 2259 | ata_qc_reinit(qc); |
| 2260 | |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2261 | ata_sg_init_one(qc, cmd->sense_buffer, sizeof(cmd->sense_buffer)); |
| 2262 | qc->dma_dir = DMA_FROM_DEVICE; |
| 2263 | |
Tejun Heo | 6e7846e | 2006-02-12 23:32:58 +0900 | [diff] [blame] | 2264 | memset(&qc->cdb, 0, qc->dev->cdb_len); |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2265 | qc->cdb[0] = REQUEST_SENSE; |
| 2266 | qc->cdb[4] = SCSI_SENSE_BUFFERSIZE; |
| 2267 | |
| 2268 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 2269 | qc->tf.command = ATA_CMD_PACKET; |
| 2270 | |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2271 | if (ata_pio_use_silly(ap)) { |
| 2272 | qc->tf.protocol = ATA_PROT_ATAPI_DMA; |
| 2273 | qc->tf.feature |= ATAPI_PKT_DMA; |
| 2274 | } else { |
| 2275 | qc->tf.protocol = ATA_PROT_ATAPI; |
| 2276 | qc->tf.lbam = (8 * 1024) & 0xff; |
| 2277 | qc->tf.lbah = (8 * 1024) >> 8; |
| 2278 | } |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2279 | qc->nbytes = SCSI_SENSE_BUFFERSIZE; |
| 2280 | |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2281 | qc->complete_fn = atapi_sense_complete; |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2282 | |
Tejun Heo | 8e0e694 | 2006-03-31 20:41:11 +0900 | [diff] [blame] | 2283 | ata_qc_issue(qc); |
Jeff Garzik | a939c96 | 2005-10-05 17:09:16 -0400 | [diff] [blame] | 2284 | |
| 2285 | DPRINTK("EXIT\n"); |
| 2286 | } |
| 2287 | |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 2288 | static void atapi_qc_complete(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2289 | { |
| 2290 | struct scsi_cmnd *cmd = qc->scsicmd; |
Albert Lee | a22e2eb | 2005-12-05 15:38:02 +0800 | [diff] [blame] | 2291 | unsigned int err_mask = qc->err_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2292 | |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 2293 | VPRINTK("ENTER, err_mask 0x%X\n", err_mask); |
Jeff Garzik | e12669e | 2005-10-05 18:39:23 -0400 | [diff] [blame] | 2294 | |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 2295 | /* handle completion from new EH */ |
| 2296 | if (unlikely(qc->ap->ops->error_handler && |
| 2297 | (err_mask || qc->flags & ATA_QCFLAG_SENSE_VALID))) { |
| 2298 | |
| 2299 | if (!(qc->flags & ATA_QCFLAG_SENSE_VALID)) { |
| 2300 | /* FIXME: not quite right; we don't want the |
| 2301 | * translation of taskfile registers into a |
| 2302 | * sense descriptors, since that's only |
| 2303 | * correct for ATA, not ATAPI |
| 2304 | */ |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 2305 | ata_gen_passthru_sense(qc); |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 2306 | } |
| 2307 | |
Tejun Heo | 22aac08 | 2006-08-08 14:08:59 +0900 | [diff] [blame] | 2308 | /* SCSI EH automatically locks door if sdev->locked is |
| 2309 | * set. Sometimes door lock request continues to |
| 2310 | * fail, for example, when no media is present. This |
| 2311 | * creates a loop - SCSI EH issues door lock which |
| 2312 | * fails and gets invoked again to acquire sense data |
| 2313 | * for the failed command. |
| 2314 | * |
| 2315 | * If door lock fails, always clear sdev->locked to |
| 2316 | * avoid this infinite loop. |
| 2317 | */ |
| 2318 | if (qc->cdb[0] == ALLOW_MEDIUM_REMOVAL) |
| 2319 | qc->dev->sdev->locked = 0; |
| 2320 | |
Tejun Heo | 246619d | 2006-05-15 20:58:16 +0900 | [diff] [blame] | 2321 | qc->scsicmd->result = SAM_STAT_CHECK_CONDITION; |
| 2322 | qc->scsidone(cmd); |
| 2323 | ata_qc_free(qc); |
| 2324 | return; |
| 2325 | } |
| 2326 | |
| 2327 | /* successful completion or old EH failure path */ |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 2328 | if (unlikely(err_mask & AC_ERR_DEV)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2329 | cmd->result = SAM_STAT_CHECK_CONDITION; |
Jeff Garzik | c6e6e66 | 2005-11-14 14:50:05 -0500 | [diff] [blame] | 2330 | atapi_request_sense(qc); |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 2331 | return; |
Tejun Heo | 74e6c8c | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 2332 | } else if (unlikely(err_mask)) { |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 2333 | /* FIXME: not quite right; we don't want the |
| 2334 | * translation of taskfile registers into |
| 2335 | * a sense descriptors, since that's only |
| 2336 | * correct for ATA, not ATAPI |
| 2337 | */ |
Tejun Heo | 750426a | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 2338 | ata_gen_passthru_sense(qc); |
Tejun Heo | 74e6c8c | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 2339 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2340 | u8 *scsicmd = cmd->cmnd; |
| 2341 | |
Tony Battersby | fd71da4 | 2005-12-21 16:35:44 -0500 | [diff] [blame] | 2342 | if ((scsicmd[0] == INQUIRY) && ((scsicmd[1] & 0x03) == 0)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2343 | u8 *buf = NULL; |
| 2344 | unsigned int buflen; |
| 2345 | |
| 2346 | buflen = ata_scsi_rbuf_get(cmd, &buf); |
Jeff Garzik | a15dbeb | 2005-10-05 15:02:14 -0400 | [diff] [blame] | 2347 | |
| 2348 | /* ATAPI devices typically report zero for their SCSI version, |
| 2349 | * and sometimes deviate from the spec WRT response data |
| 2350 | * format. If SCSI version is reported as zero like normal, |
| 2351 | * then we make the following fixups: 1) Fake MMC-5 version, |
| 2352 | * to indicate to the Linux scsi midlayer this is a modern |
| 2353 | * device. 2) Ensure response data format / ATAPI information |
| 2354 | * are always correct. |
| 2355 | */ |
Jeff Garzik | a15dbeb | 2005-10-05 15:02:14 -0400 | [diff] [blame] | 2356 | if (buf[2] == 0) { |
| 2357 | buf[2] = 0x5; |
| 2358 | buf[3] = 0x32; |
| 2359 | } |
| 2360 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2361 | ata_scsi_rbuf_put(cmd, buf); |
| 2362 | } |
Jeff Garzik | a15dbeb | 2005-10-05 15:02:14 -0400 | [diff] [blame] | 2363 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2364 | cmd->result = SAM_STAT_GOOD; |
| 2365 | } |
| 2366 | |
| 2367 | qc->scsidone(cmd); |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 2368 | ata_qc_free(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2369 | } |
| 2370 | /** |
| 2371 | * atapi_xlat - Initialize PACKET taskfile |
| 2372 | * @qc: command structure to be initialized |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2373 | * |
| 2374 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2375 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2376 | * |
| 2377 | * RETURNS: |
| 2378 | * Zero on success, non-zero on failure. |
| 2379 | */ |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 2380 | static unsigned int atapi_xlat(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2381 | { |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2382 | struct scsi_cmnd *scmd = qc->scsicmd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2383 | struct ata_device *dev = qc->dev; |
| 2384 | int using_pio = (dev->flags & ATA_DFLAG_PIO); |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2385 | int nodata = (scmd->sc_data_direction == DMA_NONE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2386 | |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 2387 | memset(qc->cdb, 0, dev->cdb_len); |
| 2388 | memcpy(qc->cdb, scmd->cmnd, scmd->cmd_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2389 | |
| 2390 | qc->complete_fn = atapi_qc_complete; |
| 2391 | |
| 2392 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2393 | if (scmd->sc_data_direction == DMA_TO_DEVICE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2394 | qc->tf.flags |= ATA_TFLAG_WRITE; |
| 2395 | DPRINTK("direction: write\n"); |
| 2396 | } |
| 2397 | |
| 2398 | qc->tf.command = ATA_CMD_PACKET; |
Tejun Heo | e00f1ff | 2007-06-27 02:47:35 +0900 | [diff] [blame] | 2399 | qc->nbytes = scmd->request_bufflen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2400 | |
Tejun Heo | e00f1ff | 2007-06-27 02:47:35 +0900 | [diff] [blame] | 2401 | /* check whether ATAPI DMA is safe */ |
| 2402 | if (!using_pio && ata_check_atapi_dma(qc)) |
| 2403 | using_pio = 1; |
| 2404 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2405 | if (using_pio || nodata) { |
Tejun Heo | e00f1ff | 2007-06-27 02:47:35 +0900 | [diff] [blame] | 2406 | /* no data, or PIO data xfer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2407 | if (nodata) |
| 2408 | qc->tf.protocol = ATA_PROT_ATAPI_NODATA; |
| 2409 | else |
| 2410 | qc->tf.protocol = ATA_PROT_ATAPI; |
| 2411 | qc->tf.lbam = (8 * 1024) & 0xff; |
| 2412 | qc->tf.lbah = (8 * 1024) >> 8; |
Tejun Heo | e00f1ff | 2007-06-27 02:47:35 +0900 | [diff] [blame] | 2413 | } else { |
| 2414 | /* DMA data xfer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2415 | qc->tf.protocol = ATA_PROT_ATAPI_DMA; |
| 2416 | qc->tf.feature |= ATAPI_PKT_DMA; |
| 2417 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2418 | if (atapi_dmadir && (scmd->sc_data_direction != DMA_TO_DEVICE)) |
Albert Lee | 95de719 | 2006-04-04 10:57:18 +0800 | [diff] [blame] | 2419 | /* some SATA bridges need us to indicate data xfer direction */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2420 | qc->tf.feature |= ATAPI_DMADIR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2421 | } |
| 2422 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2423 | return 0; |
| 2424 | } |
| 2425 | |
Tejun Heo | ab5b3a5 | 2006-05-31 18:27:34 +0900 | [diff] [blame] | 2426 | static struct ata_device * ata_find_dev(struct ata_port *ap, int id) |
| 2427 | { |
| 2428 | if (likely(id < ATA_MAX_DEVICES)) |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame^] | 2429 | return &ap->link.device[id]; |
Tejun Heo | ab5b3a5 | 2006-05-31 18:27:34 +0900 | [diff] [blame] | 2430 | return NULL; |
| 2431 | } |
| 2432 | |
| 2433 | static struct ata_device * __ata_scsi_find_dev(struct ata_port *ap, |
| 2434 | const struct scsi_device *scsidev) |
| 2435 | { |
| 2436 | /* skip commands not addressed to targets we simulate */ |
| 2437 | if (unlikely(scsidev->channel || scsidev->lun)) |
| 2438 | return NULL; |
| 2439 | |
| 2440 | return ata_find_dev(ap, scsidev->id); |
| 2441 | } |
| 2442 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2443 | /** |
Brian King | 99ba9e0 | 2006-06-12 14:54:17 -0500 | [diff] [blame] | 2444 | * ata_scsi_dev_enabled - determine if device is enabled |
| 2445 | * @dev: ATA device |
| 2446 | * |
| 2447 | * Determine if commands should be sent to the specified device. |
| 2448 | * |
| 2449 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2450 | * spin_lock_irqsave(host lock) |
Brian King | 99ba9e0 | 2006-06-12 14:54:17 -0500 | [diff] [blame] | 2451 | * |
| 2452 | * RETURNS: |
| 2453 | * 0 if commands are not allowed / 1 if commands are allowed |
| 2454 | */ |
| 2455 | |
| 2456 | static int ata_scsi_dev_enabled(struct ata_device *dev) |
| 2457 | { |
| 2458 | if (unlikely(!ata_dev_enabled(dev))) |
| 2459 | return 0; |
| 2460 | |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame^] | 2461 | if (!atapi_enabled || (dev->link->ap->flags & ATA_FLAG_NO_ATAPI)) { |
Brian King | 99ba9e0 | 2006-06-12 14:54:17 -0500 | [diff] [blame] | 2462 | if (unlikely(dev->class == ATA_DEV_ATAPI)) { |
| 2463 | ata_dev_printk(dev, KERN_WARNING, |
| 2464 | "WARNING: ATAPI is %s, device ignored.\n", |
| 2465 | atapi_enabled ? "not supported with this driver" : "disabled"); |
| 2466 | return 0; |
| 2467 | } |
| 2468 | } |
| 2469 | |
| 2470 | return 1; |
| 2471 | } |
| 2472 | |
| 2473 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2474 | * ata_scsi_find_dev - lookup ata_device from scsi_cmnd |
| 2475 | * @ap: ATA port to which the device is attached |
| 2476 | * @scsidev: SCSI device from which we derive the ATA device |
| 2477 | * |
| 2478 | * Given various information provided in struct scsi_cmnd, |
| 2479 | * map that onto an ATA bus, and using that mapping |
| 2480 | * determine which ata_device is associated with the |
| 2481 | * SCSI command to be sent. |
| 2482 | * |
| 2483 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2484 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2485 | * |
| 2486 | * RETURNS: |
| 2487 | * Associated ATA device, or %NULL if not found. |
| 2488 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2489 | static struct ata_device * |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 2490 | 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] | 2491 | { |
Tejun Heo | ab5b3a5 | 2006-05-31 18:27:34 +0900 | [diff] [blame] | 2492 | struct ata_device *dev = __ata_scsi_find_dev(ap, scsidev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2493 | |
Brian King | 99ba9e0 | 2006-06-12 14:54:17 -0500 | [diff] [blame] | 2494 | if (unlikely(!dev || !ata_scsi_dev_enabled(dev))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2495 | return NULL; |
| 2496 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2497 | return dev; |
| 2498 | } |
| 2499 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2500 | /* |
| 2501 | * ata_scsi_map_proto - Map pass-thru protocol value to taskfile value. |
| 2502 | * @byte1: Byte 1 from pass-thru CDB. |
| 2503 | * |
| 2504 | * RETURNS: |
| 2505 | * ATA_PROT_UNKNOWN if mapping failed/unimplemented, protocol otherwise. |
| 2506 | */ |
| 2507 | static u8 |
| 2508 | ata_scsi_map_proto(u8 byte1) |
| 2509 | { |
| 2510 | switch((byte1 & 0x1e) >> 1) { |
| 2511 | case 3: /* Non-data */ |
| 2512 | return ATA_PROT_NODATA; |
| 2513 | |
| 2514 | case 6: /* DMA */ |
Albert Lee | 23cb1d7 | 2007-06-07 15:50:44 +0800 | [diff] [blame] | 2515 | case 10: /* UDMA Data-in */ |
| 2516 | case 11: /* UDMA Data-Out */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2517 | return ATA_PROT_DMA; |
| 2518 | |
| 2519 | case 4: /* PIO Data-in */ |
| 2520 | case 5: /* PIO Data-out */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2521 | return ATA_PROT_PIO; |
| 2522 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2523 | case 0: /* Hard Reset */ |
| 2524 | case 1: /* SRST */ |
Albert Lee | f93f107 | 2007-06-07 15:47:13 +0800 | [diff] [blame] | 2525 | case 8: /* Device Diagnostic */ |
| 2526 | case 9: /* Device Reset */ |
| 2527 | case 7: /* DMA Queued */ |
Albert Lee | f93f107 | 2007-06-07 15:47:13 +0800 | [diff] [blame] | 2528 | case 12: /* FPDMA */ |
| 2529 | case 15: /* Return Response Info */ |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2530 | default: /* Reserved */ |
| 2531 | break; |
| 2532 | } |
| 2533 | |
| 2534 | return ATA_PROT_UNKNOWN; |
| 2535 | } |
| 2536 | |
| 2537 | /** |
| 2538 | * ata_scsi_pass_thru - convert ATA pass-thru CDB to taskfile |
| 2539 | * @qc: command structure to be initialized |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2540 | * |
| 2541 | * Handles either 12 or 16-byte versions of the CDB. |
| 2542 | * |
| 2543 | * RETURNS: |
| 2544 | * Zero on success, non-zero on failure. |
| 2545 | */ |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 2546 | static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2547 | { |
| 2548 | struct ata_taskfile *tf = &(qc->tf); |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2549 | struct scsi_cmnd *scmd = qc->scsicmd; |
Alan Cox | f79d409 | 2006-05-22 16:55:11 +0100 | [diff] [blame] | 2550 | struct ata_device *dev = qc->dev; |
Tejun Heo | ad70699 | 2006-12-17 10:45:57 +0900 | [diff] [blame] | 2551 | const u8 *cdb = scmd->cmnd; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2552 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2553 | if ((tf->protocol = ata_scsi_map_proto(cdb[1])) == ATA_PROT_UNKNOWN) |
Tejun Heo | 9a40525 | 2005-12-02 11:49:11 +0900 | [diff] [blame] | 2554 | goto invalid_fld; |
Jeff Garzik | 8190bdb | 2006-05-24 01:53:39 -0400 | [diff] [blame] | 2555 | |
Alan Cox | f79d409 | 2006-05-22 16:55:11 +0100 | [diff] [blame] | 2556 | /* We may not issue DMA commands if no DMA mode is set */ |
| 2557 | if (tf->protocol == ATA_PROT_DMA && dev->dma_mode == 0) |
| 2558 | goto invalid_fld; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2559 | |
| 2560 | /* |
| 2561 | * 12 and 16 byte CDBs use different offsets to |
| 2562 | * provide the various register values. |
| 2563 | */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2564 | if (cdb[0] == ATA_16) { |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2565 | /* |
| 2566 | * 16-byte CDB - may contain extended commands. |
| 2567 | * |
| 2568 | * If that is the case, copy the upper byte register values. |
| 2569 | */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2570 | if (cdb[1] & 0x01) { |
| 2571 | tf->hob_feature = cdb[3]; |
| 2572 | tf->hob_nsect = cdb[5]; |
| 2573 | tf->hob_lbal = cdb[7]; |
| 2574 | tf->hob_lbam = cdb[9]; |
| 2575 | tf->hob_lbah = cdb[11]; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2576 | tf->flags |= ATA_TFLAG_LBA48; |
| 2577 | } else |
| 2578 | tf->flags &= ~ATA_TFLAG_LBA48; |
| 2579 | |
| 2580 | /* |
| 2581 | * Always copy low byte, device and command registers. |
| 2582 | */ |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2583 | tf->feature = cdb[4]; |
| 2584 | tf->nsect = cdb[6]; |
| 2585 | tf->lbal = cdb[8]; |
| 2586 | tf->lbam = cdb[10]; |
| 2587 | tf->lbah = cdb[12]; |
| 2588 | tf->device = cdb[13]; |
| 2589 | tf->command = cdb[14]; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2590 | } else { |
| 2591 | /* |
| 2592 | * 12-byte CDB - incapable of extended commands. |
| 2593 | */ |
| 2594 | tf->flags &= ~ATA_TFLAG_LBA48; |
| 2595 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2596 | tf->feature = cdb[3]; |
| 2597 | tf->nsect = cdb[4]; |
| 2598 | tf->lbal = cdb[5]; |
| 2599 | tf->lbam = cdb[6]; |
| 2600 | tf->lbah = cdb[7]; |
| 2601 | tf->device = cdb[8]; |
| 2602 | tf->command = cdb[9]; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2603 | } |
Albert Lee | fa4453c | 2007-06-07 15:52:07 +0800 | [diff] [blame] | 2604 | |
| 2605 | /* enforce correct master/slave bit */ |
| 2606 | tf->device = dev->devno ? |
| 2607 | tf->device | ATA_DEV1 : tf->device & ~ATA_DEV1; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2608 | |
Albert Lee | 1dce589 | 2007-06-07 15:49:22 +0800 | [diff] [blame] | 2609 | /* sanity check for pio multi commands */ |
| 2610 | if ((cdb[1] & 0xe0) && !is_multi_taskfile(tf)) |
| 2611 | goto invalid_fld; |
| 2612 | |
| 2613 | if (is_multi_taskfile(tf)) { |
| 2614 | unsigned int multi_count = 1 << (cdb[1] >> 5); |
| 2615 | |
| 2616 | /* compare the passed through multi_count |
| 2617 | * with the cached multi_count of libata |
| 2618 | */ |
| 2619 | if (multi_count != dev->multi_count) |
| 2620 | ata_dev_printk(dev, KERN_WARNING, |
| 2621 | "invalid multi_count %u ignored\n", |
| 2622 | multi_count); |
Alan Cox | d26fc95 | 2007-07-06 19:13:52 -0400 | [diff] [blame] | 2623 | } |
Albert Lee | 1dce589 | 2007-06-07 15:49:22 +0800 | [diff] [blame] | 2624 | |
Mark Lord | 5a5dbd1 | 2007-03-16 10:22:26 -0400 | [diff] [blame] | 2625 | /* READ/WRITE LONG use a non-standard sect_size */ |
| 2626 | qc->sect_size = ATA_SECT_SIZE; |
| 2627 | switch (tf->command) { |
| 2628 | case ATA_CMD_READ_LONG: |
| 2629 | case ATA_CMD_READ_LONG_ONCE: |
| 2630 | case ATA_CMD_WRITE_LONG: |
| 2631 | case ATA_CMD_WRITE_LONG_ONCE: |
| 2632 | if (tf->protocol != ATA_PROT_PIO || tf->nsect != 1) |
| 2633 | goto invalid_fld; |
| 2634 | qc->sect_size = scmd->request_bufflen; |
| 2635 | } |
| 2636 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2637 | /* |
| 2638 | * Filter SET_FEATURES - XFER MODE command -- otherwise, |
| 2639 | * SET_FEATURES - XFER MODE must be preceded/succeeded |
| 2640 | * by an update to hardware-specific registers for each |
| 2641 | * controller (i.e. the reason for ->set_piomode(), |
| 2642 | * ->set_dmamode(), and ->post_set_mode() hooks). |
| 2643 | */ |
| 2644 | if ((tf->command == ATA_CMD_SET_FEATURES) |
| 2645 | && (tf->feature == SETFEATURES_XFER)) |
Tejun Heo | 9a40525 | 2005-12-02 11:49:11 +0900 | [diff] [blame] | 2646 | goto invalid_fld; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2647 | |
| 2648 | /* |
| 2649 | * Set flags so that all registers will be written, |
| 2650 | * and pass on write indication (used for PIO/DMA |
| 2651 | * setup.) |
| 2652 | */ |
| 2653 | tf->flags |= (ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE); |
| 2654 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2655 | if (scmd->sc_data_direction == DMA_TO_DEVICE) |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2656 | tf->flags |= ATA_TFLAG_WRITE; |
| 2657 | |
| 2658 | /* |
| 2659 | * Set transfer length. |
| 2660 | * |
| 2661 | * TODO: find out if we need to do more here to |
| 2662 | * cover scatter/gather case. |
| 2663 | */ |
Tejun Heo | 726f078 | 2007-01-03 17:30:39 +0900 | [diff] [blame] | 2664 | qc->nbytes = scmd->request_bufflen; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2665 | |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 2666 | /* request result TF */ |
| 2667 | qc->flags |= ATA_QCFLAG_RESULT_TF; |
| 2668 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2669 | return 0; |
Tejun Heo | 9a40525 | 2005-12-02 11:49:11 +0900 | [diff] [blame] | 2670 | |
| 2671 | invalid_fld: |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2672 | ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x00); |
Tejun Heo | 9a40525 | 2005-12-02 11:49:11 +0900 | [diff] [blame] | 2673 | /* "Invalid field in cdb" */ |
| 2674 | return 1; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2675 | } |
| 2676 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2677 | /** |
| 2678 | * ata_get_xlat_func - check if SCSI to ATA translation is possible |
| 2679 | * @dev: ATA device |
| 2680 | * @cmd: SCSI command opcode to consider |
| 2681 | * |
| 2682 | * Look up the SCSI command given, and determine whether the |
| 2683 | * SCSI command is to be translated or simulated. |
| 2684 | * |
| 2685 | * RETURNS: |
| 2686 | * Pointer to translation function if possible, %NULL if not. |
| 2687 | */ |
| 2688 | |
| 2689 | static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd) |
| 2690 | { |
| 2691 | switch (cmd) { |
| 2692 | case READ_6: |
| 2693 | case READ_10: |
| 2694 | case READ_16: |
| 2695 | |
| 2696 | case WRITE_6: |
| 2697 | case WRITE_10: |
| 2698 | case WRITE_16: |
| 2699 | return ata_scsi_rw_xlat; |
| 2700 | |
| 2701 | case SYNCHRONIZE_CACHE: |
| 2702 | if (ata_try_flush_cache(dev)) |
| 2703 | return ata_scsi_flush_xlat; |
| 2704 | break; |
| 2705 | |
| 2706 | case VERIFY: |
| 2707 | case VERIFY_16: |
| 2708 | return ata_scsi_verify_xlat; |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2709 | |
| 2710 | case ATA_12: |
| 2711 | case ATA_16: |
| 2712 | return ata_scsi_pass_thru; |
Jeff Garzik | da61396 | 2005-08-29 19:01:43 -0400 | [diff] [blame] | 2713 | |
Douglas Gilbert | 972dcaf | 2005-08-11 03:35:53 -0400 | [diff] [blame] | 2714 | case START_STOP: |
| 2715 | return ata_scsi_start_stop_xlat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2716 | } |
| 2717 | |
| 2718 | return NULL; |
| 2719 | } |
| 2720 | |
| 2721 | /** |
| 2722 | * ata_scsi_dump_cdb - dump SCSI command contents to dmesg |
| 2723 | * @ap: ATA port to which the command was being sent |
| 2724 | * @cmd: SCSI command to dump |
| 2725 | * |
| 2726 | * Prints the contents of a SCSI command via printk(). |
| 2727 | */ |
| 2728 | |
| 2729 | static inline void ata_scsi_dump_cdb(struct ata_port *ap, |
| 2730 | struct scsi_cmnd *cmd) |
| 2731 | { |
| 2732 | #ifdef ATA_DEBUG |
| 2733 | struct scsi_device *scsidev = cmd->device; |
| 2734 | u8 *scsicmd = cmd->cmnd; |
| 2735 | |
| 2736 | DPRINTK("CDB (%u:%d,%d,%d) %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 2737 | ap->print_id, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2738 | scsidev->channel, scsidev->id, scsidev->lun, |
| 2739 | scsicmd[0], scsicmd[1], scsicmd[2], scsicmd[3], |
| 2740 | scsicmd[4], scsicmd[5], scsicmd[6], scsicmd[7], |
| 2741 | scsicmd[8]); |
| 2742 | #endif |
| 2743 | } |
| 2744 | |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2745 | static inline int __ata_scsi_queuecmd(struct scsi_cmnd *scmd, |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 2746 | void (*done)(struct scsi_cmnd *), |
| 2747 | struct ata_device *dev) |
Brian King | eb3f0f9 | 2006-03-23 17:30:02 -0600 | [diff] [blame] | 2748 | { |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 2749 | int rc = 0; |
| 2750 | |
Mark Lord | f0ef88e | 2007-02-02 12:36:25 -0500 | [diff] [blame] | 2751 | if (unlikely(!scmd->cmd_len || scmd->cmd_len > dev->cdb_len)) { |
| 2752 | DPRINTK("bad CDB len=%u, max=%u\n", |
| 2753 | scmd->cmd_len, dev->cdb_len); |
Tejun Heo | 2e5704f | 2006-12-17 10:46:33 +0900 | [diff] [blame] | 2754 | scmd->result = DID_ERROR << 16; |
| 2755 | done(scmd); |
| 2756 | return 0; |
| 2757 | } |
| 2758 | |
Brian King | eb3f0f9 | 2006-03-23 17:30:02 -0600 | [diff] [blame] | 2759 | if (dev->class == ATA_DEV_ATA) { |
| 2760 | ata_xlat_func_t xlat_func = ata_get_xlat_func(dev, |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2761 | scmd->cmnd[0]); |
Brian King | eb3f0f9 | 2006-03-23 17:30:02 -0600 | [diff] [blame] | 2762 | |
| 2763 | if (xlat_func) |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2764 | rc = ata_scsi_translate(dev, scmd, done, xlat_func); |
Brian King | eb3f0f9 | 2006-03-23 17:30:02 -0600 | [diff] [blame] | 2765 | else |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2766 | ata_scsi_simulate(dev, scmd, done); |
Brian King | eb3f0f9 | 2006-03-23 17:30:02 -0600 | [diff] [blame] | 2767 | } else |
Tejun Heo | 542b144 | 2006-12-17 10:45:08 +0900 | [diff] [blame] | 2768 | rc = ata_scsi_translate(dev, scmd, done, atapi_xlat); |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 2769 | |
| 2770 | return rc; |
Brian King | eb3f0f9 | 2006-03-23 17:30:02 -0600 | [diff] [blame] | 2771 | } |
| 2772 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2773 | /** |
| 2774 | * ata_scsi_queuecmd - Issue SCSI cdb to libata-managed device |
| 2775 | * @cmd: SCSI command to be sent |
| 2776 | * @done: Completion function, called when command is complete |
| 2777 | * |
| 2778 | * In some cases, this function translates SCSI commands into |
| 2779 | * ATA taskfiles, and queues the taskfiles to be sent to |
| 2780 | * hardware. In other cases, this function simulates a |
| 2781 | * SCSI device by evaluating and responding to certain |
| 2782 | * SCSI commands. This creates the overall effect of |
| 2783 | * ATA and ATAPI devices appearing as SCSI devices. |
| 2784 | * |
| 2785 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2786 | * Releases scsi-layer-held lock, and obtains host lock. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2787 | * |
| 2788 | * RETURNS: |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 2789 | * Return value from __ata_scsi_queuecmd() if @cmd can be queued, |
| 2790 | * 0 otherwise. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2791 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2792 | int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)) |
| 2793 | { |
| 2794 | struct ata_port *ap; |
| 2795 | struct ata_device *dev; |
| 2796 | struct scsi_device *scsidev = cmd->device; |
Jeff Garzik | 005a5a0 | 2005-10-30 23:31:48 -0500 | [diff] [blame] | 2797 | struct Scsi_Host *shost = scsidev->host; |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 2798 | int rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2799 | |
Jeff Garzik | 35bb94b | 2006-04-11 13:12:34 -0400 | [diff] [blame] | 2800 | ap = ata_shost_to_port(shost); |
Jeff Garzik | 005a5a0 | 2005-10-30 23:31:48 -0500 | [diff] [blame] | 2801 | |
| 2802 | spin_unlock(shost->host_lock); |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 2803 | spin_lock(ap->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2804 | |
| 2805 | ata_scsi_dump_cdb(ap, cmd); |
| 2806 | |
| 2807 | dev = ata_scsi_find_dev(ap, scsidev); |
Brian King | eb3f0f9 | 2006-03-23 17:30:02 -0600 | [diff] [blame] | 2808 | if (likely(dev)) |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 2809 | rc = __ata_scsi_queuecmd(cmd, done, dev); |
Brian King | eb3f0f9 | 2006-03-23 17:30:02 -0600 | [diff] [blame] | 2810 | else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2811 | cmd->result = (DID_BAD_TARGET << 16); |
| 2812 | done(cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2813 | } |
| 2814 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 2815 | spin_unlock(ap->lock); |
Jeff Garzik | 005a5a0 | 2005-10-30 23:31:48 -0500 | [diff] [blame] | 2816 | spin_lock(shost->host_lock); |
Tejun Heo | 2115ea9 | 2006-05-15 21:03:39 +0900 | [diff] [blame] | 2817 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2818 | } |
| 2819 | |
| 2820 | /** |
| 2821 | * ata_scsi_simulate - simulate SCSI command on ATA device |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 2822 | * @dev: the target device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2823 | * @cmd: SCSI command being sent to device. |
| 2824 | * @done: SCSI command completion function. |
| 2825 | * |
| 2826 | * Interprets and directly executes a select list of SCSI commands |
| 2827 | * that can be handled internally. |
| 2828 | * |
| 2829 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2830 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2831 | */ |
| 2832 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 2833 | void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2834 | void (*done)(struct scsi_cmnd *)) |
| 2835 | { |
| 2836 | struct ata_scsi_args args; |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 2837 | const u8 *scsicmd = cmd->cmnd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2838 | |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 2839 | args.dev = dev; |
| 2840 | args.id = dev->id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2841 | args.cmd = cmd; |
| 2842 | args.done = done; |
| 2843 | |
| 2844 | switch(scsicmd[0]) { |
| 2845 | /* no-op's, complete with success */ |
| 2846 | case SYNCHRONIZE_CACHE: |
| 2847 | case REZERO_UNIT: |
| 2848 | case SEEK_6: |
| 2849 | case SEEK_10: |
| 2850 | case TEST_UNIT_READY: |
| 2851 | case FORMAT_UNIT: /* FIXME: correct? */ |
| 2852 | case SEND_DIAGNOSTIC: /* FIXME: correct? */ |
| 2853 | ata_scsi_rbuf_fill(&args, ata_scsiop_noop); |
| 2854 | break; |
| 2855 | |
| 2856 | case INQUIRY: |
| 2857 | if (scsicmd[1] & 2) /* is CmdDt set? */ |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2858 | ata_scsi_invalid_field(cmd, done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2859 | else if ((scsicmd[1] & 1) == 0) /* is EVPD clear? */ |
| 2860 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_std); |
| 2861 | else if (scsicmd[2] == 0x00) |
| 2862 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_00); |
| 2863 | else if (scsicmd[2] == 0x80) |
| 2864 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_80); |
| 2865 | else if (scsicmd[2] == 0x83) |
| 2866 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_83); |
| 2867 | else |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2868 | ata_scsi_invalid_field(cmd, done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2869 | break; |
| 2870 | |
| 2871 | case MODE_SENSE: |
| 2872 | case MODE_SENSE_10: |
| 2873 | ata_scsi_rbuf_fill(&args, ata_scsiop_mode_sense); |
| 2874 | break; |
| 2875 | |
| 2876 | case MODE_SELECT: /* unconditionally return */ |
| 2877 | case MODE_SELECT_10: /* bad-field-in-cdb */ |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2878 | ata_scsi_invalid_field(cmd, done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2879 | break; |
| 2880 | |
| 2881 | case READ_CAPACITY: |
| 2882 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); |
| 2883 | break; |
| 2884 | |
| 2885 | case SERVICE_ACTION_IN: |
| 2886 | if ((scsicmd[1] & 0x1f) == SAI_READ_CAPACITY_16) |
| 2887 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); |
| 2888 | else |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2889 | ata_scsi_invalid_field(cmd, done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2890 | break; |
| 2891 | |
| 2892 | case REPORT_LUNS: |
| 2893 | ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns); |
| 2894 | break; |
| 2895 | |
Jeff Garzik | b095518 | 2005-05-12 15:45:22 -0400 | [diff] [blame] | 2896 | /* mandatory commands we haven't implemented yet */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2897 | case REQUEST_SENSE: |
| 2898 | |
| 2899 | /* all other commands */ |
| 2900 | default: |
Douglas Gilbert | ae00651 | 2005-10-09 09:09:35 -0400 | [diff] [blame] | 2901 | ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x20, 0x0); |
| 2902 | /* "Invalid command operation code" */ |
| 2903 | done(cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2904 | break; |
| 2905 | } |
| 2906 | } |
| 2907 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 2908 | int ata_scsi_add_hosts(struct ata_host *host, struct scsi_host_template *sht) |
| 2909 | { |
| 2910 | int i, rc; |
| 2911 | |
| 2912 | for (i = 0; i < host->n_ports; i++) { |
| 2913 | struct ata_port *ap = host->ports[i]; |
| 2914 | struct Scsi_Host *shost; |
| 2915 | |
| 2916 | rc = -ENOMEM; |
| 2917 | shost = scsi_host_alloc(sht, sizeof(struct ata_port *)); |
| 2918 | if (!shost) |
| 2919 | goto err_alloc; |
| 2920 | |
| 2921 | *(struct ata_port **)&shost->hostdata[0] = ap; |
| 2922 | ap->scsi_host = shost; |
| 2923 | |
| 2924 | shost->transportt = &ata_scsi_transport_template; |
| 2925 | shost->unique_id = ap->print_id; |
| 2926 | shost->max_id = 16; |
| 2927 | shost->max_lun = 1; |
| 2928 | shost->max_channel = 1; |
| 2929 | shost->max_cmd_len = 16; |
| 2930 | |
| 2931 | rc = scsi_add_host(ap->scsi_host, ap->host->dev); |
| 2932 | if (rc) |
| 2933 | goto err_add; |
| 2934 | } |
| 2935 | |
| 2936 | return 0; |
| 2937 | |
| 2938 | err_add: |
| 2939 | scsi_host_put(host->ports[i]->scsi_host); |
| 2940 | err_alloc: |
| 2941 | while (--i >= 0) { |
| 2942 | struct Scsi_Host *shost = host->ports[i]->scsi_host; |
| 2943 | |
| 2944 | scsi_remove_host(shost); |
| 2945 | scsi_host_put(shost); |
| 2946 | } |
| 2947 | return rc; |
| 2948 | } |
| 2949 | |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2950 | void ata_scsi_scan_host(struct ata_port *ap, int sync) |
Jeff Garzik | 644dd0c | 2005-10-03 15:55:19 -0400 | [diff] [blame] | 2951 | { |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2952 | int tries = 5; |
| 2953 | struct ata_device *last_failed_dev = NULL; |
| 2954 | struct ata_device *dev; |
Jeff Garzik | 644dd0c | 2005-10-03 15:55:19 -0400 | [diff] [blame] | 2955 | unsigned int i; |
| 2956 | |
Tejun Heo | 198e0fe | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 2957 | if (ap->flags & ATA_FLAG_DISABLED) |
Jeff Garzik | 644dd0c | 2005-10-03 15:55:19 -0400 | [diff] [blame] | 2958 | return; |
| 2959 | |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2960 | repeat: |
Jeff Garzik | 3f19ee8 | 2005-10-03 21:36:41 -0400 | [diff] [blame] | 2961 | for (i = 0; i < ATA_MAX_DEVICES; i++) { |
Tejun Heo | 3edebac | 2006-05-31 18:27:40 +0900 | [diff] [blame] | 2962 | struct scsi_device *sdev; |
Jeff Garzik | 3f19ee8 | 2005-10-03 21:36:41 -0400 | [diff] [blame] | 2963 | |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame^] | 2964 | dev = &ap->link.device[i]; |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2965 | |
Tejun Heo | 3edebac | 2006-05-31 18:27:40 +0900 | [diff] [blame] | 2966 | if (!ata_dev_enabled(dev) || dev->sdev) |
| 2967 | continue; |
| 2968 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2969 | sdev = __scsi_add_device(ap->scsi_host, 0, i, 0, NULL); |
Tejun Heo | 3edebac | 2006-05-31 18:27:40 +0900 | [diff] [blame] | 2970 | if (!IS_ERR(sdev)) { |
| 2971 | dev->sdev = sdev; |
| 2972 | scsi_device_put(sdev); |
| 2973 | } |
Jeff Garzik | 3f19ee8 | 2005-10-03 21:36:41 -0400 | [diff] [blame] | 2974 | } |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2975 | |
| 2976 | /* If we scanned while EH was in progress or allocation |
| 2977 | * failure occurred, scan would have failed silently. Check |
| 2978 | * whether all devices are attached. |
| 2979 | */ |
| 2980 | for (i = 0; i < ATA_MAX_DEVICES; i++) { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame^] | 2981 | dev = &ap->link.device[i]; |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2982 | if (ata_dev_enabled(dev) && !dev->sdev) |
| 2983 | break; |
| 2984 | } |
| 2985 | if (i == ATA_MAX_DEVICES) |
| 2986 | return; |
| 2987 | |
| 2988 | /* we're missing some SCSI devices */ |
| 2989 | if (sync) { |
| 2990 | /* If caller requested synchrnous scan && we've made |
| 2991 | * any progress, sleep briefly and repeat. |
| 2992 | */ |
| 2993 | if (dev != last_failed_dev) { |
| 2994 | msleep(100); |
| 2995 | last_failed_dev = dev; |
| 2996 | goto repeat; |
| 2997 | } |
| 2998 | |
| 2999 | /* We might be failing to detect boot device, give it |
| 3000 | * a few more chances. |
| 3001 | */ |
| 3002 | if (--tries) { |
| 3003 | msleep(100); |
| 3004 | goto repeat; |
| 3005 | } |
| 3006 | |
| 3007 | ata_port_printk(ap, KERN_ERR, "WARNING: synchronous SCSI scan " |
| 3008 | "failed without making any progress,\n" |
| 3009 | " switching to async\n"); |
| 3010 | } |
| 3011 | |
| 3012 | queue_delayed_work(ata_aux_wq, &ap->hotplug_task, |
| 3013 | round_jiffies_relative(HZ)); |
Jeff Garzik | 644dd0c | 2005-10-03 15:55:19 -0400 | [diff] [blame] | 3014 | } |
Tejun Heo | 0ea035a | 2006-05-31 18:28:01 +0900 | [diff] [blame] | 3015 | |
| 3016 | /** |
| 3017 | * ata_scsi_offline_dev - offline attached SCSI device |
| 3018 | * @dev: ATA device to offline attached SCSI device for |
| 3019 | * |
| 3020 | * This function is called from ata_eh_hotplug() and responsible |
| 3021 | * for taking the SCSI device attached to @dev offline. This |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3022 | * function is called with host lock which protects dev->sdev |
Tejun Heo | 0ea035a | 2006-05-31 18:28:01 +0900 | [diff] [blame] | 3023 | * against clearing. |
| 3024 | * |
| 3025 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3026 | * spin_lock_irqsave(host lock) |
Tejun Heo | 0ea035a | 2006-05-31 18:28:01 +0900 | [diff] [blame] | 3027 | * |
| 3028 | * RETURNS: |
| 3029 | * 1 if attached SCSI device exists, 0 otherwise. |
| 3030 | */ |
| 3031 | int ata_scsi_offline_dev(struct ata_device *dev) |
| 3032 | { |
| 3033 | if (dev->sdev) { |
| 3034 | scsi_device_set_state(dev->sdev, SDEV_OFFLINE); |
| 3035 | return 1; |
| 3036 | } |
| 3037 | return 0; |
| 3038 | } |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3039 | |
| 3040 | /** |
| 3041 | * ata_scsi_remove_dev - remove attached SCSI device |
| 3042 | * @dev: ATA device to remove attached SCSI device for |
| 3043 | * |
| 3044 | * This function is called from ata_eh_scsi_hotplug() and |
| 3045 | * responsible for removing the SCSI device attached to @dev. |
| 3046 | * |
| 3047 | * LOCKING: |
| 3048 | * Kernel thread context (may sleep). |
| 3049 | */ |
| 3050 | static void ata_scsi_remove_dev(struct ata_device *dev) |
| 3051 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame^] | 3052 | struct ata_port *ap = dev->link->ap; |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3053 | struct scsi_device *sdev; |
| 3054 | unsigned long flags; |
| 3055 | |
| 3056 | /* Alas, we need to grab scan_mutex to ensure SCSI device |
| 3057 | * state doesn't change underneath us and thus |
| 3058 | * scsi_device_get() always succeeds. The mutex locking can |
| 3059 | * be removed if there is __scsi_device_get() interface which |
| 3060 | * increments reference counts regardless of device state. |
| 3061 | */ |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3062 | mutex_lock(&ap->scsi_host->scan_mutex); |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 3063 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3064 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3065 | /* clearing dev->sdev is protected by host lock */ |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3066 | sdev = dev->sdev; |
| 3067 | dev->sdev = NULL; |
| 3068 | |
| 3069 | if (sdev) { |
| 3070 | /* If user initiated unplug races with us, sdev can go |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3071 | * away underneath us after the host lock and |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3072 | * scan_mutex are released. Hold onto it. |
| 3073 | */ |
| 3074 | if (scsi_device_get(sdev) == 0) { |
| 3075 | /* The following ensures the attached sdev is |
| 3076 | * offline on return from ata_scsi_offline_dev() |
| 3077 | * regardless it wins or loses the race |
| 3078 | * against this function. |
| 3079 | */ |
| 3080 | scsi_device_set_state(sdev, SDEV_OFFLINE); |
| 3081 | } else { |
| 3082 | WARN_ON(1); |
| 3083 | sdev = NULL; |
| 3084 | } |
| 3085 | } |
| 3086 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 3087 | spin_unlock_irqrestore(ap->lock, flags); |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3088 | mutex_unlock(&ap->scsi_host->scan_mutex); |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3089 | |
| 3090 | if (sdev) { |
| 3091 | ata_dev_printk(dev, KERN_INFO, "detaching (SCSI %s)\n", |
| 3092 | sdev->sdev_gendev.bus_id); |
| 3093 | |
| 3094 | scsi_remove_device(sdev); |
| 3095 | scsi_device_put(sdev); |
| 3096 | } |
| 3097 | } |
| 3098 | |
| 3099 | /** |
| 3100 | * ata_scsi_hotplug - SCSI part of hotplug |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 3101 | * @work: Pointer to ATA port to perform SCSI hotplug on |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3102 | * |
| 3103 | * Perform SCSI part of hotplug. It's executed from a separate |
| 3104 | * workqueue after EH completes. This is necessary because SCSI |
| 3105 | * hot plugging requires working EH and hot unplugging is |
| 3106 | * synchronized with hot plugging with a mutex. |
| 3107 | * |
| 3108 | * LOCKING: |
| 3109 | * Kernel thread context (may sleep). |
| 3110 | */ |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 3111 | void ata_scsi_hotplug(struct work_struct *work) |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3112 | { |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 3113 | struct ata_port *ap = |
| 3114 | container_of(work, struct ata_port, hotplug_task.work); |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3115 | int i; |
| 3116 | |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 3117 | if (ap->pflags & ATA_PFLAG_UNLOADING) { |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3118 | DPRINTK("ENTER/EXIT - unloading\n"); |
| 3119 | return; |
| 3120 | } |
| 3121 | |
| 3122 | DPRINTK("ENTER\n"); |
| 3123 | |
| 3124 | /* unplug detached devices */ |
| 3125 | for (i = 0; i < ATA_MAX_DEVICES; i++) { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame^] | 3126 | struct ata_device *dev = &ap->link.device[i]; |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3127 | unsigned long flags; |
| 3128 | |
| 3129 | if (!(dev->flags & ATA_DFLAG_DETACHED)) |
| 3130 | continue; |
| 3131 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 3132 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3133 | dev->flags &= ~ATA_DFLAG_DETACHED; |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 3134 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3135 | |
| 3136 | ata_scsi_remove_dev(dev); |
| 3137 | } |
| 3138 | |
| 3139 | /* scan for new ones */ |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3140 | ata_scsi_scan_host(ap, 0); |
Tejun Heo | 580b210 | 2006-05-31 18:28:05 +0900 | [diff] [blame] | 3141 | |
| 3142 | DPRINTK("EXIT\n"); |
| 3143 | } |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3144 | |
| 3145 | /** |
| 3146 | * ata_scsi_user_scan - indication for user-initiated bus scan |
| 3147 | * @shost: SCSI host to scan |
| 3148 | * @channel: Channel to scan |
| 3149 | * @id: ID to scan |
| 3150 | * @lun: LUN to scan |
| 3151 | * |
| 3152 | * This function is called when user explicitly requests bus |
| 3153 | * scan. Set probe pending flag and invoke EH. |
| 3154 | * |
| 3155 | * LOCKING: |
| 3156 | * SCSI layer (we don't care) |
| 3157 | * |
| 3158 | * RETURNS: |
| 3159 | * Zero. |
| 3160 | */ |
| 3161 | static int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel, |
| 3162 | unsigned int id, unsigned int lun) |
| 3163 | { |
| 3164 | struct ata_port *ap = ata_shost_to_port(shost); |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame^] | 3165 | struct ata_eh_info *ehi = &ap->link.eh_info; |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3166 | unsigned long flags; |
| 3167 | int rc = 0; |
| 3168 | |
| 3169 | if (!ap->ops->error_handler) |
| 3170 | return -EOPNOTSUPP; |
| 3171 | |
| 3172 | if ((channel != SCAN_WILD_CARD && channel != 0) || |
| 3173 | (lun != SCAN_WILD_CARD && lun != 0)) |
| 3174 | return -EINVAL; |
| 3175 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 3176 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3177 | |
| 3178 | if (id == SCAN_WILD_CARD) { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame^] | 3179 | ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; |
| 3180 | ehi->action |= ATA_EH_SOFTRESET; |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3181 | } else { |
| 3182 | struct ata_device *dev = ata_find_dev(ap, id); |
| 3183 | |
| 3184 | if (dev) { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame^] | 3185 | ehi->probe_mask |= 1 << dev->devno; |
| 3186 | ehi->action |= ATA_EH_SOFTRESET; |
| 3187 | ehi->flags |= ATA_EHI_RESUME_LINK; |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3188 | } else |
| 3189 | rc = -EINVAL; |
| 3190 | } |
| 3191 | |
Tejun Heo | 309afcb | 2006-09-30 18:07:17 +0900 | [diff] [blame] | 3192 | if (rc == 0) { |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3193 | ata_port_schedule_eh(ap); |
Tejun Heo | 309afcb | 2006-09-30 18:07:17 +0900 | [diff] [blame] | 3194 | spin_unlock_irqrestore(ap->lock, flags); |
| 3195 | ata_port_wait_eh(ap); |
| 3196 | } else |
| 3197 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 3198 | |
| 3199 | return rc; |
| 3200 | } |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3201 | |
| 3202 | /** |
Tejun Heo | d017126 | 2006-06-12 22:51:14 +0900 | [diff] [blame] | 3203 | * ata_scsi_dev_rescan - initiate scsi_rescan_device() |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 3204 | * @work: Pointer to ATA port to perform scsi_rescan_device() |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3205 | * |
Tejun Heo | d017126 | 2006-06-12 22:51:14 +0900 | [diff] [blame] | 3206 | * After ATA pass thru (SAT) commands are executed successfully, |
| 3207 | * libata need to propagate the changes to SCSI layer. This |
| 3208 | * function must be executed from ata_aux_wq such that sdev |
| 3209 | * attach/detach don't race with rescan. |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3210 | * |
Tejun Heo | d017126 | 2006-06-12 22:51:14 +0900 | [diff] [blame] | 3211 | * LOCKING: |
| 3212 | * Kernel thread context (may sleep). |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3213 | */ |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 3214 | void ata_scsi_dev_rescan(struct work_struct *work) |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3215 | { |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 3216 | struct ata_port *ap = |
| 3217 | container_of(work, struct ata_port, scsi_rescan_task); |
Tejun Heo | f84e7e4 | 2006-11-22 11:21:31 +0900 | [diff] [blame] | 3218 | unsigned long flags; |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3219 | unsigned int i; |
| 3220 | |
Tejun Heo | f84e7e4 | 2006-11-22 11:21:31 +0900 | [diff] [blame] | 3221 | spin_lock_irqsave(ap->lock, flags); |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3222 | |
Tejun Heo | f84e7e4 | 2006-11-22 11:21:31 +0900 | [diff] [blame] | 3223 | for (i = 0; i < ATA_MAX_DEVICES; i++) { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame^] | 3224 | struct ata_device *dev = &ap->link.device[i]; |
Tejun Heo | f84e7e4 | 2006-11-22 11:21:31 +0900 | [diff] [blame] | 3225 | struct scsi_device *sdev = dev->sdev; |
| 3226 | |
| 3227 | if (!ata_dev_enabled(dev) || !sdev) |
| 3228 | continue; |
| 3229 | if (scsi_device_get(sdev)) |
| 3230 | continue; |
| 3231 | |
| 3232 | spin_unlock_irqrestore(ap->lock, flags); |
| 3233 | scsi_rescan_device(&(sdev->sdev_gendev)); |
| 3234 | scsi_device_put(sdev); |
| 3235 | spin_lock_irqsave(ap->lock, flags); |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3236 | } |
Tejun Heo | f84e7e4 | 2006-11-22 11:21:31 +0900 | [diff] [blame] | 3237 | |
| 3238 | spin_unlock_irqrestore(ap->lock, flags); |
zhao, forrest | 3057ac3 | 2006-06-12 12:01:34 +0800 | [diff] [blame] | 3239 | } |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3240 | |
| 3241 | /** |
| 3242 | * ata_sas_port_alloc - Allocate port for a SAS attached SATA device |
Jeff Garzik | 4f93137 | 2006-09-29 05:07:25 -0400 | [diff] [blame] | 3243 | * @host: ATA host container for all SAS ports |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3244 | * @port_info: Information from low-level host driver |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3245 | * @shost: SCSI host that the scsi device is attached to |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3246 | * |
| 3247 | * LOCKING: |
| 3248 | * PCI/etc. bus probe sem. |
| 3249 | * |
| 3250 | * RETURNS: |
| 3251 | * ata_port pointer on success / NULL on failure. |
| 3252 | */ |
| 3253 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3254 | struct ata_port *ata_sas_port_alloc(struct ata_host *host, |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3255 | struct ata_port_info *port_info, |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3256 | struct Scsi_Host *shost) |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3257 | { |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3258 | struct ata_port *ap; |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3259 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3260 | ap = ata_port_alloc(host); |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3261 | if (!ap) |
| 3262 | return NULL; |
| 3263 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3264 | ap->port_no = 0; |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3265 | ap->lock = shost->host_lock; |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3266 | ap->pio_mask = port_info->pio_mask; |
| 3267 | ap->mwdma_mask = port_info->mwdma_mask; |
| 3268 | ap->udma_mask = port_info->udma_mask; |
| 3269 | ap->flags |= port_info->flags; |
| 3270 | ap->ops = port_info->port_ops; |
| 3271 | ap->cbl = ATA_CBL_SATA; |
| 3272 | |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3273 | return ap; |
| 3274 | } |
| 3275 | EXPORT_SYMBOL_GPL(ata_sas_port_alloc); |
| 3276 | |
| 3277 | /** |
| 3278 | * ata_sas_port_start - Set port up for dma. |
| 3279 | * @ap: Port to initialize |
| 3280 | * |
| 3281 | * Called just after data structures for each port are |
| 3282 | * initialized. Allocates DMA pad. |
| 3283 | * |
| 3284 | * May be used as the port_start() entry in ata_port_operations. |
| 3285 | * |
| 3286 | * LOCKING: |
| 3287 | * Inherited from caller. |
| 3288 | */ |
| 3289 | int ata_sas_port_start(struct ata_port *ap) |
| 3290 | { |
| 3291 | return ata_pad_alloc(ap, ap->dev); |
| 3292 | } |
| 3293 | EXPORT_SYMBOL_GPL(ata_sas_port_start); |
| 3294 | |
| 3295 | /** |
| 3296 | * ata_port_stop - Undo ata_sas_port_start() |
| 3297 | * @ap: Port to shut down |
| 3298 | * |
| 3299 | * Frees the DMA pad. |
| 3300 | * |
| 3301 | * May be used as the port_stop() entry in ata_port_operations. |
| 3302 | * |
| 3303 | * LOCKING: |
| 3304 | * Inherited from caller. |
| 3305 | */ |
| 3306 | |
| 3307 | void ata_sas_port_stop(struct ata_port *ap) |
| 3308 | { |
| 3309 | ata_pad_free(ap, ap->dev); |
| 3310 | } |
| 3311 | EXPORT_SYMBOL_GPL(ata_sas_port_stop); |
| 3312 | |
| 3313 | /** |
| 3314 | * ata_sas_port_init - Initialize a SATA device |
| 3315 | * @ap: SATA port to initialize |
| 3316 | * |
| 3317 | * LOCKING: |
| 3318 | * PCI/etc. bus probe sem. |
| 3319 | * |
| 3320 | * RETURNS: |
| 3321 | * Zero on success, non-zero on error. |
| 3322 | */ |
| 3323 | |
| 3324 | int ata_sas_port_init(struct ata_port *ap) |
| 3325 | { |
| 3326 | int rc = ap->ops->port_start(ap); |
| 3327 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3328 | if (!rc) { |
| 3329 | ap->print_id = ata_print_id++; |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3330 | rc = ata_bus_probe(ap); |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 3331 | } |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3332 | |
| 3333 | return rc; |
| 3334 | } |
| 3335 | EXPORT_SYMBOL_GPL(ata_sas_port_init); |
| 3336 | |
| 3337 | /** |
| 3338 | * ata_sas_port_destroy - Destroy a SATA port allocated by ata_sas_port_alloc |
| 3339 | * @ap: SATA port to destroy |
| 3340 | * |
| 3341 | */ |
| 3342 | |
| 3343 | void ata_sas_port_destroy(struct ata_port *ap) |
| 3344 | { |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 3345 | if (ap->ops->port_stop) |
| 3346 | ap->ops->port_stop(ap); |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3347 | kfree(ap); |
| 3348 | } |
| 3349 | EXPORT_SYMBOL_GPL(ata_sas_port_destroy); |
| 3350 | |
| 3351 | /** |
| 3352 | * ata_sas_slave_configure - Default slave_config routine for libata devices |
| 3353 | * @sdev: SCSI device to configure |
| 3354 | * @ap: ATA port to which SCSI device is attached |
| 3355 | * |
| 3356 | * RETURNS: |
| 3357 | * Zero. |
| 3358 | */ |
| 3359 | |
| 3360 | int ata_sas_slave_configure(struct scsi_device *sdev, struct ata_port *ap) |
| 3361 | { |
| 3362 | ata_scsi_sdev_config(sdev); |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame^] | 3363 | ata_scsi_dev_config(sdev, ap->link.device); |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3364 | return 0; |
| 3365 | } |
| 3366 | EXPORT_SYMBOL_GPL(ata_sas_slave_configure); |
| 3367 | |
| 3368 | /** |
| 3369 | * ata_sas_queuecmd - Issue SCSI cdb to libata-managed device |
| 3370 | * @cmd: SCSI command to be sent |
| 3371 | * @done: Completion function, called when command is complete |
| 3372 | * @ap: ATA port to which the command is being sent |
| 3373 | * |
| 3374 | * RETURNS: |
Brian King | 08475a1 | 2006-11-20 13:51:56 -0600 | [diff] [blame] | 3375 | * Return value from __ata_scsi_queuecmd() if @cmd can be queued, |
| 3376 | * 0 otherwise. |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3377 | */ |
| 3378 | |
| 3379 | int ata_sas_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), |
| 3380 | struct ata_port *ap) |
| 3381 | { |
Brian King | 08475a1 | 2006-11-20 13:51:56 -0600 | [diff] [blame] | 3382 | int rc = 0; |
| 3383 | |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3384 | ata_scsi_dump_cdb(ap, cmd); |
| 3385 | |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame^] | 3386 | if (likely(ata_scsi_dev_enabled(ap->link.device))) |
| 3387 | rc = __ata_scsi_queuecmd(cmd, done, ap->link.device); |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3388 | else { |
| 3389 | cmd->result = (DID_BAD_TARGET << 16); |
| 3390 | done(cmd); |
| 3391 | } |
Brian King | 08475a1 | 2006-11-20 13:51:56 -0600 | [diff] [blame] | 3392 | return rc; |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 3393 | } |
| 3394 | EXPORT_SYMBOL_GPL(ata_sas_queuecmd); |