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-core.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 http://www.t13.org/ and |
| 31 | * http://www.sata-io.org/ |
| 32 | * |
Alan Cox | 92c52c5 | 2007-11-19 14:30:16 +0000 | [diff] [blame] | 33 | * Standards documents from: |
| 34 | * http://www.t13.org (ATA standards, PCI DMA IDE spec) |
| 35 | * http://www.t10.org (SCSI MMC - for ATAPI MMC) |
| 36 | * http://www.sata-io.org (SATA) |
| 37 | * http://www.compactflash.org (CF) |
| 38 | * http://www.qic.org (QIC157 - Tape and DSC) |
| 39 | * http://www.ce-ata.org (CE-ATA: not supported) |
| 40 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | */ |
| 42 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | #include <linux/kernel.h> |
| 44 | #include <linux/module.h> |
| 45 | #include <linux/pci.h> |
| 46 | #include <linux/init.h> |
| 47 | #include <linux/list.h> |
| 48 | #include <linux/mm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | #include <linux/spinlock.h> |
| 50 | #include <linux/blkdev.h> |
| 51 | #include <linux/delay.h> |
| 52 | #include <linux/timer.h> |
| 53 | #include <linux/interrupt.h> |
| 54 | #include <linux/completion.h> |
| 55 | #include <linux/suspend.h> |
| 56 | #include <linux/workqueue.h> |
David Hardeman | 378f058 | 2005-09-17 17:55:31 +1000 | [diff] [blame] | 57 | #include <linux/scatterlist.h> |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 58 | #include <linux/io.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | #include <scsi/scsi.h> |
Jeff Garzik | 193515d | 2005-11-07 00:59:37 -0500 | [diff] [blame] | 60 | #include <scsi/scsi_cmnd.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | #include <scsi/scsi_host.h> |
| 62 | #include <linux/libata.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | #include <asm/byteorder.h> |
Tejun Heo | 140b5e5 | 2007-12-12 12:21:52 +0900 | [diff] [blame] | 64 | #include <linux/cdrom.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | |
| 66 | #include "libata.h" |
| 67 | |
Jeff Garzik | fda0efc | 2007-01-31 07:43:15 -0500 | [diff] [blame] | 68 | |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 69 | /* debounce timing parameters in msecs { interval, duration, timeout } */ |
Tejun Heo | e9c8391 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 70 | const unsigned long sata_deb_timing_normal[] = { 5, 100, 2000 }; |
| 71 | const unsigned long sata_deb_timing_hotplug[] = { 25, 500, 2000 }; |
| 72 | const unsigned long sata_deb_timing_long[] = { 100, 2000, 5000 }; |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 73 | |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 74 | const struct ata_port_operations ata_base_port_ops = { |
Tejun Heo | 0aa1113 | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 75 | .prereset = ata_std_prereset, |
Tejun Heo | 203c75b | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 76 | .postreset = ata_std_postreset, |
Tejun Heo | a1efdab | 2008-03-25 12:22:50 +0900 | [diff] [blame] | 77 | .error_handler = ata_std_error_handler, |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 78 | }; |
| 79 | |
| 80 | const struct ata_port_operations sata_port_ops = { |
| 81 | .inherits = &ata_base_port_ops, |
| 82 | |
| 83 | .qc_defer = ata_std_qc_defer, |
Tejun Heo | 57c9efd | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 84 | .hardreset = sata_std_hardreset, |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 85 | }; |
| 86 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 87 | static unsigned int ata_dev_init_params(struct ata_device *dev, |
| 88 | u16 heads, u16 sectors); |
| 89 | static unsigned int ata_dev_set_xfermode(struct ata_device *dev); |
Jeff Garzik | 218f3d3 | 2007-10-25 00:33:27 -0400 | [diff] [blame] | 90 | static unsigned int ata_dev_set_feature(struct ata_device *dev, |
| 91 | u8 enable, u8 feature); |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 92 | static void ata_dev_xfermask(struct ata_device *dev); |
Tejun Heo | 75683fe | 2007-07-05 13:31:27 +0900 | [diff] [blame] | 93 | static unsigned long ata_dev_blacklisted(const struct ata_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 95 | unsigned int ata_print_id = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | static struct workqueue_struct *ata_wq; |
| 97 | |
Tejun Heo | 453b07a | 2006-05-31 18:27:42 +0900 | [diff] [blame] | 98 | struct workqueue_struct *ata_aux_wq; |
| 99 | |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 100 | struct ata_force_param { |
| 101 | const char *name; |
| 102 | unsigned int cbl; |
| 103 | int spd_limit; |
| 104 | unsigned long xfer_mask; |
| 105 | unsigned int horkage_on; |
| 106 | unsigned int horkage_off; |
| 107 | }; |
| 108 | |
| 109 | struct ata_force_ent { |
| 110 | int port; |
| 111 | int device; |
| 112 | struct ata_force_param param; |
| 113 | }; |
| 114 | |
| 115 | static struct ata_force_ent *ata_force_tbl; |
| 116 | static int ata_force_tbl_size; |
| 117 | |
| 118 | static char ata_force_param_buf[PAGE_SIZE] __initdata; |
Tejun Heo | 7afb422 | 2008-03-09 20:21:53 +0900 | [diff] [blame] | 119 | /* param_buf is thrown away after initialization, disallow read */ |
| 120 | module_param_string(force, ata_force_param_buf, sizeof(ata_force_param_buf), 0); |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 121 | MODULE_PARM_DESC(force, "Force ATA configurations including cable type, link speed and transfer mode (see Documentation/kernel-parameters.txt for details)"); |
| 122 | |
Tejun Heo | 2486fa5 | 2008-07-31 07:52:40 +0900 | [diff] [blame] | 123 | static int atapi_enabled = 1; |
Jeff Garzik | 1623c81 | 2005-08-30 03:37:42 -0400 | [diff] [blame] | 124 | module_param(atapi_enabled, int, 0444); |
| 125 | MODULE_PARM_DESC(atapi_enabled, "Enable discovery of ATAPI devices (0=off, 1=on)"); |
| 126 | |
Adrian Bunk | c5c61bd | 2008-02-25 02:07:25 +0200 | [diff] [blame] | 127 | static int atapi_dmadir = 0; |
Albert Lee | 95de719 | 2006-04-04 10:57:18 +0800 | [diff] [blame] | 128 | module_param(atapi_dmadir, int, 0444); |
| 129 | MODULE_PARM_DESC(atapi_dmadir, "Enable ATAPI DMADIR bridge support (0=off, 1=on)"); |
| 130 | |
Mark Lord | baf4fdf | 2007-08-08 01:08:45 +0900 | [diff] [blame] | 131 | int atapi_passthru16 = 1; |
| 132 | module_param(atapi_passthru16, int, 0444); |
| 133 | MODULE_PARM_DESC(atapi_passthru16, "Enable ATA_16 passthru for ATAPI devices; on by default (0=off, 1=on)"); |
| 134 | |
Jeff Garzik | c3c013a | 2006-02-27 22:31:19 -0500 | [diff] [blame] | 135 | int libata_fua = 0; |
| 136 | module_param_named(fua, libata_fua, int, 0444); |
| 137 | MODULE_PARM_DESC(fua, "FUA support (0=off, 1=on)"); |
| 138 | |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 139 | static int ata_ignore_hpa; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 140 | module_param_named(ignore_hpa, ata_ignore_hpa, int, 0644); |
| 141 | MODULE_PARM_DESC(ignore_hpa, "Ignore HPA limit (0=keep BIOS limits, 1=ignore limits, using full disk)"); |
| 142 | |
Alan Cox | b3a7060 | 2007-10-02 12:38:26 -0400 | [diff] [blame] | 143 | static int libata_dma_mask = ATA_DMA_MASK_ATA|ATA_DMA_MASK_ATAPI|ATA_DMA_MASK_CFA; |
| 144 | module_param_named(dma, libata_dma_mask, int, 0444); |
| 145 | MODULE_PARM_DESC(dma, "DMA enable/disable (0x1==ATA, 0x2==ATAPI, 0x4==CF)"); |
| 146 | |
Tejun Heo | 87fbc5a | 2008-05-20 02:17:54 +0900 | [diff] [blame] | 147 | static int ata_probe_timeout; |
Andrew Morton | a8601e5 | 2006-06-25 01:36:52 -0700 | [diff] [blame] | 148 | module_param(ata_probe_timeout, int, 0444); |
| 149 | MODULE_PARM_DESC(ata_probe_timeout, "Set ATA probing timeout (seconds)"); |
| 150 | |
Jeff Garzik | 6ebe9d8 | 2007-10-05 16:28:36 -0400 | [diff] [blame] | 151 | int libata_noacpi = 0; |
Jeff Garzik | d7d0dad | 2007-03-28 01:57:37 -0400 | [diff] [blame] | 152 | module_param_named(noacpi, libata_noacpi, int, 0444); |
Jeff Garzik | 6ebe9d8 | 2007-10-05 16:28:36 -0400 | [diff] [blame] | 153 | MODULE_PARM_DESC(noacpi, "Disables the use of ACPI in probe/suspend/resume when set"); |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 154 | |
Alan Cox | ae8d4ee | 2007-11-04 22:05:49 -0500 | [diff] [blame] | 155 | int libata_allow_tpm = 0; |
| 156 | module_param_named(allow_tpm, libata_allow_tpm, int, 0444); |
| 157 | MODULE_PARM_DESC(allow_tpm, "Permit the use of TPM commands"); |
| 158 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | MODULE_AUTHOR("Jeff Garzik"); |
| 160 | MODULE_DESCRIPTION("Library module for ATA devices"); |
| 161 | MODULE_LICENSE("GPL"); |
| 162 | MODULE_VERSION(DRV_VERSION); |
| 163 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 164 | |
| 165 | /** |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 166 | * ata_force_cbl - force cable type according to libata.force |
Randy Dunlap | 4cdfa1b | 2008-02-22 12:21:37 -0800 | [diff] [blame] | 167 | * @ap: ATA port of interest |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 168 | * |
| 169 | * Force cable type according to libata.force and whine about it. |
| 170 | * The last entry which has matching port number is used, so it |
| 171 | * can be specified as part of device force parameters. For |
| 172 | * example, both "a:40c,1.00:udma4" and "1.00:40c,udma4" have the |
| 173 | * same effect. |
| 174 | * |
| 175 | * LOCKING: |
| 176 | * EH context. |
| 177 | */ |
| 178 | void ata_force_cbl(struct ata_port *ap) |
| 179 | { |
| 180 | int i; |
| 181 | |
| 182 | for (i = ata_force_tbl_size - 1; i >= 0; i--) { |
| 183 | const struct ata_force_ent *fe = &ata_force_tbl[i]; |
| 184 | |
| 185 | if (fe->port != -1 && fe->port != ap->print_id) |
| 186 | continue; |
| 187 | |
| 188 | if (fe->param.cbl == ATA_CBL_NONE) |
| 189 | continue; |
| 190 | |
| 191 | ap->cbl = fe->param.cbl; |
| 192 | ata_port_printk(ap, KERN_NOTICE, |
| 193 | "FORCE: cable set to %s\n", fe->param.name); |
| 194 | return; |
| 195 | } |
| 196 | } |
| 197 | |
| 198 | /** |
| 199 | * ata_force_spd_limit - force SATA spd limit according to libata.force |
| 200 | * @link: ATA link of interest |
| 201 | * |
| 202 | * Force SATA spd limit according to libata.force and whine about |
| 203 | * it. When only the port part is specified (e.g. 1:), the limit |
| 204 | * applies to all links connected to both the host link and all |
| 205 | * fan-out ports connected via PMP. If the device part is |
| 206 | * specified as 0 (e.g. 1.00:), it specifies the first fan-out |
| 207 | * link not the host link. Device number 15 always points to the |
| 208 | * host link whether PMP is attached or not. |
| 209 | * |
| 210 | * LOCKING: |
| 211 | * EH context. |
| 212 | */ |
| 213 | static void ata_force_spd_limit(struct ata_link *link) |
| 214 | { |
| 215 | int linkno, i; |
| 216 | |
| 217 | if (ata_is_host_link(link)) |
| 218 | linkno = 15; |
| 219 | else |
| 220 | linkno = link->pmp; |
| 221 | |
| 222 | for (i = ata_force_tbl_size - 1; i >= 0; i--) { |
| 223 | const struct ata_force_ent *fe = &ata_force_tbl[i]; |
| 224 | |
| 225 | if (fe->port != -1 && fe->port != link->ap->print_id) |
| 226 | continue; |
| 227 | |
| 228 | if (fe->device != -1 && fe->device != linkno) |
| 229 | continue; |
| 230 | |
| 231 | if (!fe->param.spd_limit) |
| 232 | continue; |
| 233 | |
| 234 | link->hw_sata_spd_limit = (1 << fe->param.spd_limit) - 1; |
| 235 | ata_link_printk(link, KERN_NOTICE, |
| 236 | "FORCE: PHY spd limit set to %s\n", fe->param.name); |
| 237 | return; |
| 238 | } |
| 239 | } |
| 240 | |
| 241 | /** |
| 242 | * ata_force_xfermask - force xfermask according to libata.force |
| 243 | * @dev: ATA device of interest |
| 244 | * |
| 245 | * Force xfer_mask according to libata.force and whine about it. |
| 246 | * For consistency with link selection, device number 15 selects |
| 247 | * the first device connected to the host link. |
| 248 | * |
| 249 | * LOCKING: |
| 250 | * EH context. |
| 251 | */ |
| 252 | static void ata_force_xfermask(struct ata_device *dev) |
| 253 | { |
| 254 | int devno = dev->link->pmp + dev->devno; |
| 255 | int alt_devno = devno; |
| 256 | int i; |
| 257 | |
| 258 | /* allow n.15 for the first device attached to host port */ |
| 259 | if (ata_is_host_link(dev->link) && devno == 0) |
| 260 | alt_devno = 15; |
| 261 | |
| 262 | for (i = ata_force_tbl_size - 1; i >= 0; i--) { |
| 263 | const struct ata_force_ent *fe = &ata_force_tbl[i]; |
| 264 | unsigned long pio_mask, mwdma_mask, udma_mask; |
| 265 | |
| 266 | if (fe->port != -1 && fe->port != dev->link->ap->print_id) |
| 267 | continue; |
| 268 | |
| 269 | if (fe->device != -1 && fe->device != devno && |
| 270 | fe->device != alt_devno) |
| 271 | continue; |
| 272 | |
| 273 | if (!fe->param.xfer_mask) |
| 274 | continue; |
| 275 | |
| 276 | ata_unpack_xfermask(fe->param.xfer_mask, |
| 277 | &pio_mask, &mwdma_mask, &udma_mask); |
| 278 | if (udma_mask) |
| 279 | dev->udma_mask = udma_mask; |
| 280 | else if (mwdma_mask) { |
| 281 | dev->udma_mask = 0; |
| 282 | dev->mwdma_mask = mwdma_mask; |
| 283 | } else { |
| 284 | dev->udma_mask = 0; |
| 285 | dev->mwdma_mask = 0; |
| 286 | dev->pio_mask = pio_mask; |
| 287 | } |
| 288 | |
| 289 | ata_dev_printk(dev, KERN_NOTICE, |
| 290 | "FORCE: xfer_mask set to %s\n", fe->param.name); |
| 291 | return; |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | /** |
| 296 | * ata_force_horkage - force horkage according to libata.force |
| 297 | * @dev: ATA device of interest |
| 298 | * |
| 299 | * Force horkage according to libata.force and whine about it. |
| 300 | * For consistency with link selection, device number 15 selects |
| 301 | * the first device connected to the host link. |
| 302 | * |
| 303 | * LOCKING: |
| 304 | * EH context. |
| 305 | */ |
| 306 | static void ata_force_horkage(struct ata_device *dev) |
| 307 | { |
| 308 | int devno = dev->link->pmp + dev->devno; |
| 309 | int alt_devno = devno; |
| 310 | int i; |
| 311 | |
| 312 | /* allow n.15 for the first device attached to host port */ |
| 313 | if (ata_is_host_link(dev->link) && devno == 0) |
| 314 | alt_devno = 15; |
| 315 | |
| 316 | for (i = 0; i < ata_force_tbl_size; i++) { |
| 317 | const struct ata_force_ent *fe = &ata_force_tbl[i]; |
| 318 | |
| 319 | if (fe->port != -1 && fe->port != dev->link->ap->print_id) |
| 320 | continue; |
| 321 | |
| 322 | if (fe->device != -1 && fe->device != devno && |
| 323 | fe->device != alt_devno) |
| 324 | continue; |
| 325 | |
| 326 | if (!(~dev->horkage & fe->param.horkage_on) && |
| 327 | !(dev->horkage & fe->param.horkage_off)) |
| 328 | continue; |
| 329 | |
| 330 | dev->horkage |= fe->param.horkage_on; |
| 331 | dev->horkage &= ~fe->param.horkage_off; |
| 332 | |
| 333 | ata_dev_printk(dev, KERN_NOTICE, |
| 334 | "FORCE: horkage modified (%s)\n", fe->param.name); |
| 335 | } |
| 336 | } |
| 337 | |
| 338 | /** |
Tejun Heo | 436d34b | 2008-04-02 17:28:46 +0900 | [diff] [blame] | 339 | * atapi_cmd_type - Determine ATAPI command type from SCSI opcode |
| 340 | * @opcode: SCSI opcode |
| 341 | * |
| 342 | * Determine ATAPI command type from @opcode. |
| 343 | * |
| 344 | * LOCKING: |
| 345 | * None. |
| 346 | * |
| 347 | * RETURNS: |
| 348 | * ATAPI_{READ|WRITE|READ_CD|PASS_THRU|MISC} |
| 349 | */ |
| 350 | int atapi_cmd_type(u8 opcode) |
| 351 | { |
| 352 | switch (opcode) { |
| 353 | case GPCMD_READ_10: |
| 354 | case GPCMD_READ_12: |
| 355 | return ATAPI_READ; |
| 356 | |
| 357 | case GPCMD_WRITE_10: |
| 358 | case GPCMD_WRITE_12: |
| 359 | case GPCMD_WRITE_AND_VERIFY_10: |
| 360 | return ATAPI_WRITE; |
| 361 | |
| 362 | case GPCMD_READ_CD: |
| 363 | case GPCMD_READ_CD_MSF: |
| 364 | return ATAPI_READ_CD; |
| 365 | |
Tejun Heo | e52dcc4 | 2008-04-02 17:35:19 +0900 | [diff] [blame] | 366 | case ATA_16: |
| 367 | case ATA_12: |
| 368 | if (atapi_passthru16) |
| 369 | return ATAPI_PASS_THRU; |
| 370 | /* fall thru */ |
Tejun Heo | 436d34b | 2008-04-02 17:28:46 +0900 | [diff] [blame] | 371 | default: |
| 372 | return ATAPI_MISC; |
| 373 | } |
| 374 | } |
| 375 | |
| 376 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | * ata_tf_to_fis - Convert ATA taskfile to SATA FIS structure |
| 378 | * @tf: Taskfile to convert |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | * @pmp: Port multiplier port |
Tejun Heo | 9977126 | 2007-07-16 14:29:38 +0900 | [diff] [blame] | 380 | * @is_cmd: This FIS is for command |
| 381 | * @fis: Buffer into which data will output |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | * |
| 383 | * Converts a standard ATA taskfile to a Serial ATA |
| 384 | * FIS structure (Register - Host to Device). |
| 385 | * |
| 386 | * LOCKING: |
| 387 | * Inherited from caller. |
| 388 | */ |
Tejun Heo | 9977126 | 2007-07-16 14:29:38 +0900 | [diff] [blame] | 389 | void ata_tf_to_fis(const struct ata_taskfile *tf, u8 pmp, int is_cmd, u8 *fis) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | { |
Tejun Heo | 9977126 | 2007-07-16 14:29:38 +0900 | [diff] [blame] | 391 | fis[0] = 0x27; /* Register - Host to Device FIS */ |
| 392 | fis[1] = pmp & 0xf; /* Port multiplier number*/ |
| 393 | if (is_cmd) |
| 394 | fis[1] |= (1 << 7); /* bit 7 indicates Command FIS */ |
| 395 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | fis[2] = tf->command; |
| 397 | fis[3] = tf->feature; |
| 398 | |
| 399 | fis[4] = tf->lbal; |
| 400 | fis[5] = tf->lbam; |
| 401 | fis[6] = tf->lbah; |
| 402 | fis[7] = tf->device; |
| 403 | |
| 404 | fis[8] = tf->hob_lbal; |
| 405 | fis[9] = tf->hob_lbam; |
| 406 | fis[10] = tf->hob_lbah; |
| 407 | fis[11] = tf->hob_feature; |
| 408 | |
| 409 | fis[12] = tf->nsect; |
| 410 | fis[13] = tf->hob_nsect; |
| 411 | fis[14] = 0; |
| 412 | fis[15] = tf->ctl; |
| 413 | |
| 414 | fis[16] = 0; |
| 415 | fis[17] = 0; |
| 416 | fis[18] = 0; |
| 417 | fis[19] = 0; |
| 418 | } |
| 419 | |
| 420 | /** |
| 421 | * ata_tf_from_fis - Convert SATA FIS to ATA taskfile |
| 422 | * @fis: Buffer from which data will be input |
| 423 | * @tf: Taskfile to output |
| 424 | * |
Mark Lord | e12a1be | 2005-11-12 18:55:45 -0500 | [diff] [blame] | 425 | * Converts a serial ATA FIS structure to a standard ATA taskfile. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | * |
| 427 | * LOCKING: |
| 428 | * Inherited from caller. |
| 429 | */ |
| 430 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 431 | void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | { |
| 433 | tf->command = fis[2]; /* status */ |
| 434 | tf->feature = fis[3]; /* error */ |
| 435 | |
| 436 | tf->lbal = fis[4]; |
| 437 | tf->lbam = fis[5]; |
| 438 | tf->lbah = fis[6]; |
| 439 | tf->device = fis[7]; |
| 440 | |
| 441 | tf->hob_lbal = fis[8]; |
| 442 | tf->hob_lbam = fis[9]; |
| 443 | tf->hob_lbah = fis[10]; |
| 444 | |
| 445 | tf->nsect = fis[12]; |
| 446 | tf->hob_nsect = fis[13]; |
| 447 | } |
| 448 | |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 449 | static const u8 ata_rw_cmds[] = { |
| 450 | /* pio multi */ |
| 451 | ATA_CMD_READ_MULTI, |
| 452 | ATA_CMD_WRITE_MULTI, |
| 453 | ATA_CMD_READ_MULTI_EXT, |
| 454 | ATA_CMD_WRITE_MULTI_EXT, |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 455 | 0, |
| 456 | 0, |
| 457 | 0, |
| 458 | ATA_CMD_WRITE_MULTI_FUA_EXT, |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 459 | /* pio */ |
| 460 | ATA_CMD_PIO_READ, |
| 461 | ATA_CMD_PIO_WRITE, |
| 462 | ATA_CMD_PIO_READ_EXT, |
| 463 | ATA_CMD_PIO_WRITE_EXT, |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 464 | 0, |
| 465 | 0, |
| 466 | 0, |
| 467 | 0, |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 468 | /* dma */ |
| 469 | ATA_CMD_READ, |
| 470 | ATA_CMD_WRITE, |
| 471 | ATA_CMD_READ_EXT, |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 472 | ATA_CMD_WRITE_EXT, |
| 473 | 0, |
| 474 | 0, |
| 475 | 0, |
| 476 | ATA_CMD_WRITE_FUA_EXT |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 477 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | |
| 479 | /** |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 480 | * ata_rwcmd_protocol - set taskfile r/w commands and protocol |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 481 | * @tf: command to examine and configure |
| 482 | * @dev: device tf belongs to |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | * |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 484 | * Examine the device configuration and tf->flags to calculate |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 485 | * the proper read/write commands and protocol to use. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | * |
| 487 | * LOCKING: |
| 488 | * caller. |
| 489 | */ |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 490 | static int ata_rwcmd_protocol(struct ata_taskfile *tf, struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | { |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 492 | u8 cmd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 494 | int index, fua, lba48, write; |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 495 | |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 496 | fua = (tf->flags & ATA_TFLAG_FUA) ? 4 : 0; |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 497 | lba48 = (tf->flags & ATA_TFLAG_LBA48) ? 2 : 0; |
| 498 | write = (tf->flags & ATA_TFLAG_WRITE) ? 1 : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 500 | if (dev->flags & ATA_DFLAG_PIO) { |
| 501 | tf->protocol = ATA_PROT_PIO; |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 502 | index = dev->multi_count ? 0 : 8; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 503 | } else if (lba48 && (dev->link->ap->flags & ATA_FLAG_PIO_LBA48)) { |
Alan Cox | 8d238e0 | 2006-01-17 20:50:31 +0000 | [diff] [blame] | 504 | /* Unable to use DMA due to host limitation */ |
| 505 | tf->protocol = ATA_PROT_PIO; |
Albert Lee | 0565c26 | 2006-02-13 18:55:25 +0800 | [diff] [blame] | 506 | index = dev->multi_count ? 0 : 8; |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 507 | } else { |
| 508 | tf->protocol = ATA_PROT_DMA; |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 509 | index = 16; |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 510 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 512 | cmd = ata_rw_cmds[index + fua + lba48 + write]; |
| 513 | if (cmd) { |
| 514 | tf->command = cmd; |
| 515 | return 0; |
| 516 | } |
| 517 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | } |
| 519 | |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 520 | /** |
Tejun Heo | 35b649f | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 521 | * ata_tf_read_block - Read block address from ATA taskfile |
| 522 | * @tf: ATA taskfile of interest |
| 523 | * @dev: ATA device @tf belongs to |
| 524 | * |
| 525 | * LOCKING: |
| 526 | * None. |
| 527 | * |
| 528 | * Read block address from @tf. This function can handle all |
| 529 | * three address formats - LBA, LBA48 and CHS. tf->protocol and |
| 530 | * flags select the address format to use. |
| 531 | * |
| 532 | * RETURNS: |
| 533 | * Block address read from @tf. |
| 534 | */ |
| 535 | u64 ata_tf_read_block(struct ata_taskfile *tf, struct ata_device *dev) |
| 536 | { |
| 537 | u64 block = 0; |
| 538 | |
| 539 | if (tf->flags & ATA_TFLAG_LBA) { |
| 540 | if (tf->flags & ATA_TFLAG_LBA48) { |
| 541 | block |= (u64)tf->hob_lbah << 40; |
| 542 | block |= (u64)tf->hob_lbam << 32; |
| 543 | block |= tf->hob_lbal << 24; |
| 544 | } else |
| 545 | block |= (tf->device & 0xf) << 24; |
| 546 | |
| 547 | block |= tf->lbah << 16; |
| 548 | block |= tf->lbam << 8; |
| 549 | block |= tf->lbal; |
| 550 | } else { |
| 551 | u32 cyl, head, sect; |
| 552 | |
| 553 | cyl = tf->lbam | (tf->lbah << 8); |
| 554 | head = tf->device & 0xf; |
| 555 | sect = tf->lbal; |
| 556 | |
| 557 | block = (cyl * dev->heads + head) * dev->sectors + sect; |
| 558 | } |
| 559 | |
| 560 | return block; |
| 561 | } |
| 562 | |
| 563 | /** |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 564 | * ata_build_rw_tf - Build ATA taskfile for given read/write request |
| 565 | * @tf: Target ATA taskfile |
| 566 | * @dev: ATA device @tf belongs to |
| 567 | * @block: Block address |
| 568 | * @n_block: Number of blocks |
| 569 | * @tf_flags: RW/FUA etc... |
| 570 | * @tag: tag |
| 571 | * |
| 572 | * LOCKING: |
| 573 | * None. |
| 574 | * |
| 575 | * Build ATA taskfile @tf for read/write request described by |
| 576 | * @block, @n_block, @tf_flags and @tag on @dev. |
| 577 | * |
| 578 | * RETURNS: |
| 579 | * |
| 580 | * 0 on success, -ERANGE if the request is too large for @dev, |
| 581 | * -EINVAL if the request is invalid. |
| 582 | */ |
| 583 | int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev, |
| 584 | u64 block, u32 n_block, unsigned int tf_flags, |
| 585 | unsigned int tag) |
| 586 | { |
| 587 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 588 | tf->flags |= tf_flags; |
| 589 | |
Tejun Heo | 6d1245b | 2007-02-20 23:20:27 +0900 | [diff] [blame] | 590 | if (ata_ncq_enabled(dev) && likely(tag != ATA_TAG_INTERNAL)) { |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 591 | /* yay, NCQ */ |
| 592 | if (!lba_48_ok(block, n_block)) |
| 593 | return -ERANGE; |
| 594 | |
| 595 | tf->protocol = ATA_PROT_NCQ; |
| 596 | tf->flags |= ATA_TFLAG_LBA | ATA_TFLAG_LBA48; |
| 597 | |
| 598 | if (tf->flags & ATA_TFLAG_WRITE) |
| 599 | tf->command = ATA_CMD_FPDMA_WRITE; |
| 600 | else |
| 601 | tf->command = ATA_CMD_FPDMA_READ; |
| 602 | |
| 603 | tf->nsect = tag << 3; |
| 604 | tf->hob_feature = (n_block >> 8) & 0xff; |
| 605 | tf->feature = n_block & 0xff; |
| 606 | |
| 607 | tf->hob_lbah = (block >> 40) & 0xff; |
| 608 | tf->hob_lbam = (block >> 32) & 0xff; |
| 609 | tf->hob_lbal = (block >> 24) & 0xff; |
| 610 | tf->lbah = (block >> 16) & 0xff; |
| 611 | tf->lbam = (block >> 8) & 0xff; |
| 612 | tf->lbal = block & 0xff; |
| 613 | |
| 614 | tf->device = 1 << 6; |
| 615 | if (tf->flags & ATA_TFLAG_FUA) |
| 616 | tf->device |= 1 << 7; |
| 617 | } else if (dev->flags & ATA_DFLAG_LBA) { |
| 618 | tf->flags |= ATA_TFLAG_LBA; |
| 619 | |
| 620 | if (lba_28_ok(block, n_block)) { |
| 621 | /* use LBA28 */ |
| 622 | tf->device |= (block >> 24) & 0xf; |
| 623 | } else if (lba_48_ok(block, n_block)) { |
| 624 | if (!(dev->flags & ATA_DFLAG_LBA48)) |
| 625 | return -ERANGE; |
| 626 | |
| 627 | /* use LBA48 */ |
| 628 | tf->flags |= ATA_TFLAG_LBA48; |
| 629 | |
| 630 | tf->hob_nsect = (n_block >> 8) & 0xff; |
| 631 | |
| 632 | tf->hob_lbah = (block >> 40) & 0xff; |
| 633 | tf->hob_lbam = (block >> 32) & 0xff; |
| 634 | tf->hob_lbal = (block >> 24) & 0xff; |
| 635 | } else |
| 636 | /* request too large even for LBA48 */ |
| 637 | return -ERANGE; |
| 638 | |
| 639 | if (unlikely(ata_rwcmd_protocol(tf, dev) < 0)) |
| 640 | return -EINVAL; |
| 641 | |
| 642 | tf->nsect = n_block & 0xff; |
| 643 | |
| 644 | tf->lbah = (block >> 16) & 0xff; |
| 645 | tf->lbam = (block >> 8) & 0xff; |
| 646 | tf->lbal = block & 0xff; |
| 647 | |
| 648 | tf->device |= ATA_LBA; |
| 649 | } else { |
| 650 | /* CHS */ |
| 651 | u32 sect, head, cyl, track; |
| 652 | |
| 653 | /* The request -may- be too large for CHS addressing. */ |
| 654 | if (!lba_28_ok(block, n_block)) |
| 655 | return -ERANGE; |
| 656 | |
| 657 | if (unlikely(ata_rwcmd_protocol(tf, dev) < 0)) |
| 658 | return -EINVAL; |
| 659 | |
| 660 | /* Convert LBA to CHS */ |
| 661 | track = (u32)block / dev->sectors; |
| 662 | cyl = track / dev->heads; |
| 663 | head = track % dev->heads; |
| 664 | sect = (u32)block % dev->sectors + 1; |
| 665 | |
| 666 | DPRINTK("block %u track %u cyl %u head %u sect %u\n", |
| 667 | (u32)block, track, cyl, head, sect); |
| 668 | |
| 669 | /* Check whether the converted CHS can fit. |
| 670 | Cylinder: 0-65535 |
| 671 | Head: 0-15 |
| 672 | Sector: 1-255*/ |
| 673 | if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect)) |
| 674 | return -ERANGE; |
| 675 | |
| 676 | tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */ |
| 677 | tf->lbal = sect; |
| 678 | tf->lbam = cyl; |
| 679 | tf->lbah = cyl >> 8; |
| 680 | tf->device |= head; |
| 681 | } |
| 682 | |
| 683 | return 0; |
| 684 | } |
| 685 | |
| 686 | /** |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 687 | * ata_pack_xfermask - Pack pio, mwdma and udma masks into xfer_mask |
| 688 | * @pio_mask: pio_mask |
| 689 | * @mwdma_mask: mwdma_mask |
| 690 | * @udma_mask: udma_mask |
| 691 | * |
| 692 | * Pack @pio_mask, @mwdma_mask and @udma_mask into a single |
| 693 | * unsigned int xfer_mask. |
| 694 | * |
| 695 | * LOCKING: |
| 696 | * None. |
| 697 | * |
| 698 | * RETURNS: |
| 699 | * Packed xfer_mask. |
| 700 | */ |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 701 | unsigned long ata_pack_xfermask(unsigned long pio_mask, |
| 702 | unsigned long mwdma_mask, |
| 703 | unsigned long udma_mask) |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 704 | { |
| 705 | return ((pio_mask << ATA_SHIFT_PIO) & ATA_MASK_PIO) | |
| 706 | ((mwdma_mask << ATA_SHIFT_MWDMA) & ATA_MASK_MWDMA) | |
| 707 | ((udma_mask << ATA_SHIFT_UDMA) & ATA_MASK_UDMA); |
| 708 | } |
| 709 | |
Tejun Heo | c0489e4 | 2006-03-24 14:07:49 +0900 | [diff] [blame] | 710 | /** |
| 711 | * ata_unpack_xfermask - Unpack xfer_mask into pio, mwdma and udma masks |
| 712 | * @xfer_mask: xfer_mask to unpack |
| 713 | * @pio_mask: resulting pio_mask |
| 714 | * @mwdma_mask: resulting mwdma_mask |
| 715 | * @udma_mask: resulting udma_mask |
| 716 | * |
| 717 | * Unpack @xfer_mask into @pio_mask, @mwdma_mask and @udma_mask. |
| 718 | * Any NULL distination masks will be ignored. |
| 719 | */ |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 720 | void ata_unpack_xfermask(unsigned long xfer_mask, unsigned long *pio_mask, |
| 721 | unsigned long *mwdma_mask, unsigned long *udma_mask) |
Tejun Heo | c0489e4 | 2006-03-24 14:07:49 +0900 | [diff] [blame] | 722 | { |
| 723 | if (pio_mask) |
| 724 | *pio_mask = (xfer_mask & ATA_MASK_PIO) >> ATA_SHIFT_PIO; |
| 725 | if (mwdma_mask) |
| 726 | *mwdma_mask = (xfer_mask & ATA_MASK_MWDMA) >> ATA_SHIFT_MWDMA; |
| 727 | if (udma_mask) |
| 728 | *udma_mask = (xfer_mask & ATA_MASK_UDMA) >> ATA_SHIFT_UDMA; |
| 729 | } |
| 730 | |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 731 | static const struct ata_xfer_ent { |
Tejun Heo | be9a50c | 2006-03-31 22:48:52 +0900 | [diff] [blame] | 732 | int shift, bits; |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 733 | u8 base; |
| 734 | } ata_xfer_tbl[] = { |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 735 | { ATA_SHIFT_PIO, ATA_NR_PIO_MODES, XFER_PIO_0 }, |
| 736 | { ATA_SHIFT_MWDMA, ATA_NR_MWDMA_MODES, XFER_MW_DMA_0 }, |
| 737 | { ATA_SHIFT_UDMA, ATA_NR_UDMA_MODES, XFER_UDMA_0 }, |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 738 | { -1, }, |
| 739 | }; |
| 740 | |
| 741 | /** |
| 742 | * ata_xfer_mask2mode - Find matching XFER_* for the given xfer_mask |
| 743 | * @xfer_mask: xfer_mask of interest |
| 744 | * |
| 745 | * Return matching XFER_* value for @xfer_mask. Only the highest |
| 746 | * bit of @xfer_mask is considered. |
| 747 | * |
| 748 | * LOCKING: |
| 749 | * None. |
| 750 | * |
| 751 | * RETURNS: |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 752 | * Matching XFER_* value, 0xff if no match found. |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 753 | */ |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 754 | u8 ata_xfer_mask2mode(unsigned long xfer_mask) |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 755 | { |
| 756 | int highbit = fls(xfer_mask) - 1; |
| 757 | const struct ata_xfer_ent *ent; |
| 758 | |
| 759 | for (ent = ata_xfer_tbl; ent->shift >= 0; ent++) |
| 760 | if (highbit >= ent->shift && highbit < ent->shift + ent->bits) |
| 761 | return ent->base + highbit - ent->shift; |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 762 | return 0xff; |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 763 | } |
| 764 | |
| 765 | /** |
| 766 | * ata_xfer_mode2mask - Find matching xfer_mask for XFER_* |
| 767 | * @xfer_mode: XFER_* of interest |
| 768 | * |
| 769 | * Return matching xfer_mask for @xfer_mode. |
| 770 | * |
| 771 | * LOCKING: |
| 772 | * None. |
| 773 | * |
| 774 | * RETURNS: |
| 775 | * Matching xfer_mask, 0 if no match found. |
| 776 | */ |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 777 | unsigned long ata_xfer_mode2mask(u8 xfer_mode) |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 778 | { |
| 779 | const struct ata_xfer_ent *ent; |
| 780 | |
| 781 | for (ent = ata_xfer_tbl; ent->shift >= 0; ent++) |
| 782 | if (xfer_mode >= ent->base && xfer_mode < ent->base + ent->bits) |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 783 | return ((2 << (ent->shift + xfer_mode - ent->base)) - 1) |
| 784 | & ~((1 << ent->shift) - 1); |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 785 | return 0; |
| 786 | } |
| 787 | |
| 788 | /** |
| 789 | * ata_xfer_mode2shift - Find matching xfer_shift for XFER_* |
| 790 | * @xfer_mode: XFER_* of interest |
| 791 | * |
| 792 | * Return matching xfer_shift for @xfer_mode. |
| 793 | * |
| 794 | * LOCKING: |
| 795 | * None. |
| 796 | * |
| 797 | * RETURNS: |
| 798 | * Matching xfer_shift, -1 if no match found. |
| 799 | */ |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 800 | int ata_xfer_mode2shift(unsigned long xfer_mode) |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 801 | { |
| 802 | const struct ata_xfer_ent *ent; |
| 803 | |
| 804 | for (ent = ata_xfer_tbl; ent->shift >= 0; ent++) |
| 805 | if (xfer_mode >= ent->base && xfer_mode < ent->base + ent->bits) |
| 806 | return ent->shift; |
| 807 | return -1; |
| 808 | } |
| 809 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | /** |
Tejun Heo | 1da7b0d | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 811 | * ata_mode_string - convert xfer_mask to string |
| 812 | * @xfer_mask: mask of bits supported; only highest bit counts. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | * |
| 814 | * Determine string which represents the highest speed |
Tejun Heo | 1da7b0d | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 815 | * (highest bit in @modemask). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | * |
| 817 | * LOCKING: |
| 818 | * None. |
| 819 | * |
| 820 | * RETURNS: |
| 821 | * Constant C string representing highest speed listed in |
Tejun Heo | 1da7b0d | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 822 | * @mode_mask, or the constant C string "<n/a>". |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | */ |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 824 | const char *ata_mode_string(unsigned long xfer_mask) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | { |
Tejun Heo | 75f554b | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 826 | static const char * const xfer_mode_str[] = { |
| 827 | "PIO0", |
| 828 | "PIO1", |
| 829 | "PIO2", |
| 830 | "PIO3", |
| 831 | "PIO4", |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 832 | "PIO5", |
| 833 | "PIO6", |
Tejun Heo | 75f554b | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 834 | "MWDMA0", |
| 835 | "MWDMA1", |
| 836 | "MWDMA2", |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 837 | "MWDMA3", |
| 838 | "MWDMA4", |
Tejun Heo | 75f554b | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 839 | "UDMA/16", |
| 840 | "UDMA/25", |
| 841 | "UDMA/33", |
| 842 | "UDMA/44", |
| 843 | "UDMA/66", |
| 844 | "UDMA/100", |
| 845 | "UDMA/133", |
| 846 | "UDMA7", |
| 847 | }; |
Tejun Heo | 1da7b0d | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 848 | int highbit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | |
Tejun Heo | 1da7b0d | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 850 | highbit = fls(xfer_mask) - 1; |
| 851 | if (highbit >= 0 && highbit < ARRAY_SIZE(xfer_mode_str)) |
| 852 | return xfer_mode_str[highbit]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | return "<n/a>"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | } |
| 855 | |
Tejun Heo | 4c360c8 | 2006-04-01 01:38:17 +0900 | [diff] [blame] | 856 | static const char *sata_spd_string(unsigned int spd) |
| 857 | { |
| 858 | static const char * const spd_str[] = { |
| 859 | "1.5 Gbps", |
| 860 | "3.0 Gbps", |
| 861 | }; |
| 862 | |
| 863 | if (spd == 0 || (spd - 1) >= ARRAY_SIZE(spd_str)) |
| 864 | return "<unknown>"; |
| 865 | return spd_str[spd - 1]; |
| 866 | } |
| 867 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 868 | void ata_dev_disable(struct ata_device *dev) |
Tejun Heo | 0b8efb0 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 869 | { |
Tejun Heo | 09d7f9b | 2007-06-25 23:34:02 +0900 | [diff] [blame] | 870 | if (ata_dev_enabled(dev)) { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 871 | if (ata_msg_drv(dev->link->ap)) |
Tejun Heo | 09d7f9b | 2007-06-25 23:34:02 +0900 | [diff] [blame] | 872 | ata_dev_printk(dev, KERN_WARNING, "disabled\n"); |
Tejun Heo | 562f0c2 | 2007-12-15 15:05:01 +0900 | [diff] [blame] | 873 | ata_acpi_on_disable(dev); |
Tejun Heo | 4ae72a1 | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 874 | ata_down_xfermask_limit(dev, ATA_DNXFER_FORCE_PIO0 | |
| 875 | ATA_DNXFER_QUIET); |
Tejun Heo | 0b8efb0 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 876 | dev->class++; |
| 877 | } |
| 878 | } |
| 879 | |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 880 | static int ata_dev_set_dipm(struct ata_device *dev, enum link_pm policy) |
| 881 | { |
| 882 | struct ata_link *link = dev->link; |
| 883 | struct ata_port *ap = link->ap; |
| 884 | u32 scontrol; |
| 885 | unsigned int err_mask; |
| 886 | int rc; |
| 887 | |
| 888 | /* |
| 889 | * disallow DIPM for drivers which haven't set |
| 890 | * ATA_FLAG_IPM. This is because when DIPM is enabled, |
| 891 | * phy ready will be set in the interrupt status on |
| 892 | * state changes, which will cause some drivers to |
| 893 | * think there are errors - additionally drivers will |
| 894 | * need to disable hot plug. |
| 895 | */ |
| 896 | if (!(ap->flags & ATA_FLAG_IPM) || !ata_dev_enabled(dev)) { |
| 897 | ap->pm_policy = NOT_AVAILABLE; |
| 898 | return -EINVAL; |
| 899 | } |
| 900 | |
| 901 | /* |
| 902 | * For DIPM, we will only enable it for the |
| 903 | * min_power setting. |
| 904 | * |
| 905 | * Why? Because Disks are too stupid to know that |
| 906 | * If the host rejects a request to go to SLUMBER |
| 907 | * they should retry at PARTIAL, and instead it |
| 908 | * just would give up. So, for medium_power to |
| 909 | * work at all, we need to only allow HIPM. |
| 910 | */ |
| 911 | rc = sata_scr_read(link, SCR_CONTROL, &scontrol); |
| 912 | if (rc) |
| 913 | return rc; |
| 914 | |
| 915 | switch (policy) { |
| 916 | case MIN_POWER: |
| 917 | /* no restrictions on IPM transitions */ |
| 918 | scontrol &= ~(0x3 << 8); |
| 919 | rc = sata_scr_write(link, SCR_CONTROL, scontrol); |
| 920 | if (rc) |
| 921 | return rc; |
| 922 | |
| 923 | /* enable DIPM */ |
| 924 | if (dev->flags & ATA_DFLAG_DIPM) |
| 925 | err_mask = ata_dev_set_feature(dev, |
| 926 | SETFEATURES_SATA_ENABLE, SATA_DIPM); |
| 927 | break; |
| 928 | case MEDIUM_POWER: |
| 929 | /* allow IPM to PARTIAL */ |
| 930 | scontrol &= ~(0x1 << 8); |
| 931 | scontrol |= (0x2 << 8); |
| 932 | rc = sata_scr_write(link, SCR_CONTROL, scontrol); |
| 933 | if (rc) |
| 934 | return rc; |
| 935 | |
Kristen Carlson Accardi | f5456b6 | 2007-11-02 16:37:08 -0700 | [diff] [blame] | 936 | /* |
| 937 | * we don't have to disable DIPM since IPM flags |
| 938 | * disallow transitions to SLUMBER, which effectively |
| 939 | * disable DIPM if it does not support PARTIAL |
| 940 | */ |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 941 | break; |
| 942 | case NOT_AVAILABLE: |
| 943 | case MAX_PERFORMANCE: |
| 944 | /* disable all IPM transitions */ |
| 945 | scontrol |= (0x3 << 8); |
| 946 | rc = sata_scr_write(link, SCR_CONTROL, scontrol); |
| 947 | if (rc) |
| 948 | return rc; |
| 949 | |
Kristen Carlson Accardi | f5456b6 | 2007-11-02 16:37:08 -0700 | [diff] [blame] | 950 | /* |
| 951 | * we don't have to disable DIPM since IPM flags |
| 952 | * disallow all transitions which effectively |
| 953 | * disable DIPM anyway. |
| 954 | */ |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 955 | break; |
| 956 | } |
| 957 | |
| 958 | /* FIXME: handle SET FEATURES failure */ |
| 959 | (void) err_mask; |
| 960 | |
| 961 | return 0; |
| 962 | } |
| 963 | |
| 964 | /** |
| 965 | * ata_dev_enable_pm - enable SATA interface power management |
Stephen Hemminger | 48166fd | 2007-10-31 10:00:27 -0700 | [diff] [blame] | 966 | * @dev: device to enable power management |
| 967 | * @policy: the link power management policy |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 968 | * |
| 969 | * Enable SATA Interface power management. This will enable |
| 970 | * Device Interface Power Management (DIPM) for min_power |
| 971 | * policy, and then call driver specific callbacks for |
| 972 | * enabling Host Initiated Power management. |
| 973 | * |
| 974 | * Locking: Caller. |
| 975 | * Returns: -EINVAL if IPM is not supported, 0 otherwise. |
| 976 | */ |
| 977 | void ata_dev_enable_pm(struct ata_device *dev, enum link_pm policy) |
| 978 | { |
| 979 | int rc = 0; |
| 980 | struct ata_port *ap = dev->link->ap; |
| 981 | |
| 982 | /* set HIPM first, then DIPM */ |
| 983 | if (ap->ops->enable_pm) |
| 984 | rc = ap->ops->enable_pm(ap, policy); |
| 985 | if (rc) |
| 986 | goto enable_pm_out; |
| 987 | rc = ata_dev_set_dipm(dev, policy); |
| 988 | |
| 989 | enable_pm_out: |
| 990 | if (rc) |
| 991 | ap->pm_policy = MAX_PERFORMANCE; |
| 992 | else |
| 993 | ap->pm_policy = policy; |
| 994 | return /* rc */; /* hopefully we can use 'rc' eventually */ |
| 995 | } |
| 996 | |
Stephen Rothwell | 1992a5e | 2007-10-31 14:53:32 +1100 | [diff] [blame] | 997 | #ifdef CONFIG_PM |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 998 | /** |
| 999 | * ata_dev_disable_pm - disable SATA interface power management |
Stephen Hemminger | 48166fd | 2007-10-31 10:00:27 -0700 | [diff] [blame] | 1000 | * @dev: device to disable power management |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1001 | * |
| 1002 | * Disable SATA Interface power management. This will disable |
| 1003 | * Device Interface Power Management (DIPM) without changing |
| 1004 | * policy, call driver specific callbacks for disabling Host |
| 1005 | * Initiated Power management. |
| 1006 | * |
| 1007 | * Locking: Caller. |
| 1008 | * Returns: void |
| 1009 | */ |
| 1010 | static void ata_dev_disable_pm(struct ata_device *dev) |
| 1011 | { |
| 1012 | struct ata_port *ap = dev->link->ap; |
| 1013 | |
| 1014 | ata_dev_set_dipm(dev, MAX_PERFORMANCE); |
| 1015 | if (ap->ops->disable_pm) |
| 1016 | ap->ops->disable_pm(ap); |
| 1017 | } |
Stephen Rothwell | 1992a5e | 2007-10-31 14:53:32 +1100 | [diff] [blame] | 1018 | #endif /* CONFIG_PM */ |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1019 | |
| 1020 | void ata_lpm_schedule(struct ata_port *ap, enum link_pm policy) |
| 1021 | { |
| 1022 | ap->pm_policy = policy; |
Tejun Heo | 3ec25eb | 2008-03-27 18:37:14 +0900 | [diff] [blame] | 1023 | ap->link.eh_info.action |= ATA_EH_LPM; |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1024 | ap->link.eh_info.flags |= ATA_EHI_NO_AUTOPSY; |
| 1025 | ata_port_schedule_eh(ap); |
| 1026 | } |
| 1027 | |
Stephen Rothwell | 1992a5e | 2007-10-31 14:53:32 +1100 | [diff] [blame] | 1028 | #ifdef CONFIG_PM |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1029 | static void ata_lpm_enable(struct ata_host *host) |
| 1030 | { |
| 1031 | struct ata_link *link; |
| 1032 | struct ata_port *ap; |
| 1033 | struct ata_device *dev; |
| 1034 | int i; |
| 1035 | |
| 1036 | for (i = 0; i < host->n_ports; i++) { |
| 1037 | ap = host->ports[i]; |
| 1038 | ata_port_for_each_link(link, ap) { |
| 1039 | ata_link_for_each_dev(dev, link) |
| 1040 | ata_dev_disable_pm(dev); |
| 1041 | } |
| 1042 | } |
| 1043 | } |
| 1044 | |
| 1045 | static void ata_lpm_disable(struct ata_host *host) |
| 1046 | { |
| 1047 | int i; |
| 1048 | |
| 1049 | for (i = 0; i < host->n_ports; i++) { |
| 1050 | struct ata_port *ap = host->ports[i]; |
| 1051 | ata_lpm_schedule(ap, ap->pm_policy); |
| 1052 | } |
| 1053 | } |
Stephen Rothwell | 1992a5e | 2007-10-31 14:53:32 +1100 | [diff] [blame] | 1054 | #endif /* CONFIG_PM */ |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1055 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | /** |
| 1057 | * ata_dev_classify - determine device type based on ATA-spec signature |
| 1058 | * @tf: ATA taskfile register set for device to be identified |
| 1059 | * |
| 1060 | * Determine from taskfile register contents whether a device is |
| 1061 | * ATA or ATAPI, as per "Signature and persistence" section |
| 1062 | * of ATA/PI spec (volume 1, sect 5.14). |
| 1063 | * |
| 1064 | * LOCKING: |
| 1065 | * None. |
| 1066 | * |
| 1067 | * RETURNS: |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 1068 | * Device type, %ATA_DEV_ATA, %ATA_DEV_ATAPI, %ATA_DEV_PMP or |
| 1069 | * %ATA_DEV_UNKNOWN the event of failure. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1070 | */ |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 1071 | unsigned int ata_dev_classify(const struct ata_taskfile *tf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1072 | { |
| 1073 | /* Apple's open source Darwin code hints that some devices only |
| 1074 | * put a proper signature into the LBA mid/high registers, |
| 1075 | * So, we only check those. It's sufficient for uniqueness. |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 1076 | * |
| 1077 | * ATA/ATAPI-7 (d1532v1r1: Feb. 19, 2003) specified separate |
| 1078 | * signatures for ATA and ATAPI devices attached on SerialATA, |
| 1079 | * 0x3c/0xc3 and 0x69/0x96 respectively. However, SerialATA |
| 1080 | * spec has never mentioned about using different signatures |
| 1081 | * for ATA/ATAPI devices. Then, Serial ATA II: Port |
| 1082 | * Multiplier specification began to use 0x69/0x96 to identify |
| 1083 | * port multpliers and 0x3c/0xc3 to identify SEMB device. |
| 1084 | * ATA/ATAPI-7 dropped descriptions about 0x3c/0xc3 and |
| 1085 | * 0x69/0x96 shortly and described them as reserved for |
| 1086 | * SerialATA. |
| 1087 | * |
| 1088 | * We follow the current spec and consider that 0x69/0x96 |
| 1089 | * identifies a port multiplier and 0x3c/0xc3 a SEMB device. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | */ |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 1091 | if ((tf->lbam == 0) && (tf->lbah == 0)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | DPRINTK("found ATA device by sig\n"); |
| 1093 | return ATA_DEV_ATA; |
| 1094 | } |
| 1095 | |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 1096 | if ((tf->lbam == 0x14) && (tf->lbah == 0xeb)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1097 | DPRINTK("found ATAPI device by sig\n"); |
| 1098 | return ATA_DEV_ATAPI; |
| 1099 | } |
| 1100 | |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 1101 | if ((tf->lbam == 0x69) && (tf->lbah == 0x96)) { |
| 1102 | DPRINTK("found PMP device by sig\n"); |
| 1103 | return ATA_DEV_PMP; |
| 1104 | } |
| 1105 | |
| 1106 | if ((tf->lbam == 0x3c) && (tf->lbah == 0xc3)) { |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1107 | printk(KERN_INFO "ata: SEMB device ignored\n"); |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 1108 | return ATA_DEV_SEMB_UNSUP; /* not yet */ |
| 1109 | } |
| 1110 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1111 | DPRINTK("unknown device\n"); |
| 1112 | return ATA_DEV_UNKNOWN; |
| 1113 | } |
| 1114 | |
| 1115 | /** |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 1116 | * ata_id_string - Convert IDENTIFY DEVICE page into string |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1117 | * @id: IDENTIFY DEVICE results we will examine |
| 1118 | * @s: string into which data is output |
| 1119 | * @ofs: offset into identify device page |
| 1120 | * @len: length of string to return. must be an even number. |
| 1121 | * |
| 1122 | * The strings in the IDENTIFY DEVICE page are broken up into |
| 1123 | * 16-bit chunks. Run through the string, and output each |
| 1124 | * 8-bit chunk linearly, regardless of platform. |
| 1125 | * |
| 1126 | * LOCKING: |
| 1127 | * caller. |
| 1128 | */ |
| 1129 | |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 1130 | void ata_id_string(const u16 *id, unsigned char *s, |
| 1131 | unsigned int ofs, unsigned int len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1132 | { |
| 1133 | unsigned int c; |
| 1134 | |
| 1135 | while (len > 0) { |
| 1136 | c = id[ofs] >> 8; |
| 1137 | *s = c; |
| 1138 | s++; |
| 1139 | |
| 1140 | c = id[ofs] & 0xff; |
| 1141 | *s = c; |
| 1142 | s++; |
| 1143 | |
| 1144 | ofs++; |
| 1145 | len -= 2; |
| 1146 | } |
| 1147 | } |
| 1148 | |
Tejun Heo | 0e949ff | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 1149 | /** |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 1150 | * ata_id_c_string - Convert IDENTIFY DEVICE page into C string |
Tejun Heo | 0e949ff | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 1151 | * @id: IDENTIFY DEVICE results we will examine |
| 1152 | * @s: string into which data is output |
| 1153 | * @ofs: offset into identify device page |
| 1154 | * @len: length of string to return. must be an odd number. |
| 1155 | * |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 1156 | * This function is identical to ata_id_string except that it |
Tejun Heo | 0e949ff | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 1157 | * trims trailing spaces and terminates the resulting string with |
| 1158 | * null. @len must be actual maximum length (even number) + 1. |
| 1159 | * |
| 1160 | * LOCKING: |
| 1161 | * caller. |
| 1162 | */ |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 1163 | void ata_id_c_string(const u16 *id, unsigned char *s, |
| 1164 | unsigned int ofs, unsigned int len) |
Tejun Heo | 0e949ff | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 1165 | { |
| 1166 | unsigned char *p; |
| 1167 | |
| 1168 | WARN_ON(!(len & 1)); |
| 1169 | |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 1170 | ata_id_string(id, s, ofs, len - 1); |
Tejun Heo | 0e949ff | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 1171 | |
| 1172 | p = s + strnlen(s, len - 1); |
| 1173 | while (p > s && p[-1] == ' ') |
| 1174 | p--; |
| 1175 | *p = '\0'; |
| 1176 | } |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 1177 | |
Tejun Heo | db6f875 | 2007-09-03 12:31:58 +0900 | [diff] [blame] | 1178 | static u64 ata_id_n_sectors(const u16 *id) |
| 1179 | { |
| 1180 | if (ata_id_has_lba(id)) { |
| 1181 | if (ata_id_has_lba48(id)) |
| 1182 | return ata_id_u64(id, 100); |
| 1183 | else |
| 1184 | return ata_id_u32(id, 60); |
| 1185 | } else { |
| 1186 | if (ata_id_current_chs_valid(id)) |
| 1187 | return ata_id_u32(id, 57); |
| 1188 | else |
| 1189 | return id[1] * id[3] * id[6]; |
| 1190 | } |
| 1191 | } |
| 1192 | |
Tejun Heo | a5987e0 | 2008-03-27 19:14:23 +0900 | [diff] [blame] | 1193 | u64 ata_tf_to_lba48(const struct ata_taskfile *tf) |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1194 | { |
| 1195 | u64 sectors = 0; |
| 1196 | |
| 1197 | sectors |= ((u64)(tf->hob_lbah & 0xff)) << 40; |
| 1198 | sectors |= ((u64)(tf->hob_lbam & 0xff)) << 32; |
| 1199 | sectors |= (tf->hob_lbal & 0xff) << 24; |
| 1200 | sectors |= (tf->lbah & 0xff) << 16; |
| 1201 | sectors |= (tf->lbam & 0xff) << 8; |
| 1202 | sectors |= (tf->lbal & 0xff); |
| 1203 | |
Tejun Heo | a5987e0 | 2008-03-27 19:14:23 +0900 | [diff] [blame] | 1204 | return sectors; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1205 | } |
| 1206 | |
Tejun Heo | a5987e0 | 2008-03-27 19:14:23 +0900 | [diff] [blame] | 1207 | u64 ata_tf_to_lba(const struct ata_taskfile *tf) |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1208 | { |
| 1209 | u64 sectors = 0; |
| 1210 | |
| 1211 | sectors |= (tf->device & 0x0f) << 24; |
| 1212 | sectors |= (tf->lbah & 0xff) << 16; |
| 1213 | sectors |= (tf->lbam & 0xff) << 8; |
| 1214 | sectors |= (tf->lbal & 0xff); |
| 1215 | |
Tejun Heo | a5987e0 | 2008-03-27 19:14:23 +0900 | [diff] [blame] | 1216 | return sectors; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1217 | } |
| 1218 | |
| 1219 | /** |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1220 | * ata_read_native_max_address - Read native max address |
| 1221 | * @dev: target device |
| 1222 | * @max_sectors: out parameter for the result native max address |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1223 | * |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1224 | * Perform an LBA48 or LBA28 native size query upon the device in |
| 1225 | * question. |
| 1226 | * |
| 1227 | * RETURNS: |
| 1228 | * 0 on success, -EACCES if command is aborted by the drive. |
| 1229 | * -EIO on other errors. |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1230 | */ |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1231 | static int ata_read_native_max_address(struct ata_device *dev, u64 *max_sectors) |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1232 | { |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1233 | unsigned int err_mask; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1234 | struct ata_taskfile tf; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1235 | int lba48 = ata_id_has_lba48(dev->id); |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1236 | |
| 1237 | ata_tf_init(dev, &tf); |
| 1238 | |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1239 | /* always clear all address registers */ |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1240 | tf.flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1241 | |
| 1242 | if (lba48) { |
| 1243 | tf.command = ATA_CMD_READ_NATIVE_MAX_EXT; |
| 1244 | tf.flags |= ATA_TFLAG_LBA48; |
| 1245 | } else |
| 1246 | tf.command = ATA_CMD_READ_NATIVE_MAX; |
| 1247 | |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1248 | tf.protocol |= ATA_PROT_NODATA; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1249 | tf.device |= ATA_LBA; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1250 | |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1251 | err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0); |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1252 | if (err_mask) { |
| 1253 | ata_dev_printk(dev, KERN_WARNING, "failed to read native " |
| 1254 | "max address (err_mask=0x%x)\n", err_mask); |
| 1255 | if (err_mask == AC_ERR_DEV && (tf.feature & ATA_ABORTED)) |
| 1256 | return -EACCES; |
| 1257 | return -EIO; |
| 1258 | } |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1259 | |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1260 | if (lba48) |
Tejun Heo | a5987e0 | 2008-03-27 19:14:23 +0900 | [diff] [blame] | 1261 | *max_sectors = ata_tf_to_lba48(&tf) + 1; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1262 | else |
Tejun Heo | a5987e0 | 2008-03-27 19:14:23 +0900 | [diff] [blame] | 1263 | *max_sectors = ata_tf_to_lba(&tf) + 1; |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1264 | if (dev->horkage & ATA_HORKAGE_HPA_SIZE) |
Alan Cox | 93328e1 | 2007-09-29 04:06:48 -0400 | [diff] [blame] | 1265 | (*max_sectors)--; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1266 | return 0; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1267 | } |
| 1268 | |
| 1269 | /** |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1270 | * ata_set_max_sectors - Set max sectors |
| 1271 | * @dev: target device |
Randy Dunlap | 6b38d1d | 2007-05-01 17:35:55 -0700 | [diff] [blame] | 1272 | * @new_sectors: new max sectors value to set for the device |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1273 | * |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1274 | * Set max sectors of @dev to @new_sectors. |
| 1275 | * |
| 1276 | * RETURNS: |
| 1277 | * 0 on success, -EACCES if command is aborted or denied (due to |
| 1278 | * previous non-volatile SET_MAX) by the drive. -EIO on other |
| 1279 | * errors. |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1280 | */ |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1281 | static int ata_set_max_sectors(struct ata_device *dev, u64 new_sectors) |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1282 | { |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1283 | unsigned int err_mask; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1284 | struct ata_taskfile tf; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1285 | int lba48 = ata_id_has_lba48(dev->id); |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1286 | |
| 1287 | new_sectors--; |
| 1288 | |
| 1289 | ata_tf_init(dev, &tf); |
| 1290 | |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1291 | tf.flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1292 | |
| 1293 | if (lba48) { |
| 1294 | tf.command = ATA_CMD_SET_MAX_EXT; |
| 1295 | tf.flags |= ATA_TFLAG_LBA48; |
| 1296 | |
| 1297 | tf.hob_lbal = (new_sectors >> 24) & 0xff; |
| 1298 | tf.hob_lbam = (new_sectors >> 32) & 0xff; |
| 1299 | tf.hob_lbah = (new_sectors >> 40) & 0xff; |
Tejun Heo | 1e582ba | 2007-09-21 20:07:14 +0900 | [diff] [blame] | 1300 | } else { |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1301 | tf.command = ATA_CMD_SET_MAX; |
| 1302 | |
Tejun Heo | 1e582ba | 2007-09-21 20:07:14 +0900 | [diff] [blame] | 1303 | tf.device |= (new_sectors >> 24) & 0xf; |
| 1304 | } |
| 1305 | |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1306 | tf.protocol |= ATA_PROT_NODATA; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1307 | tf.device |= ATA_LBA; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1308 | |
| 1309 | tf.lbal = (new_sectors >> 0) & 0xff; |
| 1310 | tf.lbam = (new_sectors >> 8) & 0xff; |
| 1311 | tf.lbah = (new_sectors >> 16) & 0xff; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1312 | |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1313 | err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0); |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1314 | if (err_mask) { |
| 1315 | ata_dev_printk(dev, KERN_WARNING, "failed to set " |
| 1316 | "max address (err_mask=0x%x)\n", err_mask); |
| 1317 | if (err_mask == AC_ERR_DEV && |
| 1318 | (tf.feature & (ATA_ABORTED | ATA_IDNF))) |
| 1319 | return -EACCES; |
| 1320 | return -EIO; |
| 1321 | } |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1322 | |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1323 | return 0; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1324 | } |
| 1325 | |
| 1326 | /** |
| 1327 | * ata_hpa_resize - Resize a device with an HPA set |
| 1328 | * @dev: Device to resize |
| 1329 | * |
| 1330 | * Read the size of an LBA28 or LBA48 disk with HPA features and resize |
| 1331 | * it if required to the full size of the media. The caller must check |
| 1332 | * the drive has the HPA feature set enabled. |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1333 | * |
| 1334 | * RETURNS: |
| 1335 | * 0 on success, -errno on failure. |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1336 | */ |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1337 | static int ata_hpa_resize(struct ata_device *dev) |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1338 | { |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1339 | struct ata_eh_context *ehc = &dev->link->eh_context; |
| 1340 | int print_info = ehc->i.flags & ATA_EHI_PRINTINFO; |
| 1341 | u64 sectors = ata_id_n_sectors(dev->id); |
| 1342 | u64 native_sectors; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1343 | int rc; |
Jeff Garzik | a617c09 | 2007-05-21 20:14:23 -0400 | [diff] [blame] | 1344 | |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1345 | /* do we need to do it? */ |
| 1346 | if (dev->class != ATA_DEV_ATA || |
| 1347 | !ata_id_has_lba(dev->id) || !ata_id_hpa_enabled(dev->id) || |
| 1348 | (dev->horkage & ATA_HORKAGE_BROKEN_HPA)) |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1349 | return 0; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1350 | |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1351 | /* read native max address */ |
| 1352 | rc = ata_read_native_max_address(dev, &native_sectors); |
| 1353 | if (rc) { |
Tejun Heo | dda7aba | 2008-03-23 21:05:15 +0900 | [diff] [blame] | 1354 | /* If device aborted the command or HPA isn't going to |
| 1355 | * be unlocked, skip HPA resizing. |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1356 | */ |
Tejun Heo | dda7aba | 2008-03-23 21:05:15 +0900 | [diff] [blame] | 1357 | if (rc == -EACCES || !ata_ignore_hpa) { |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1358 | ata_dev_printk(dev, KERN_WARNING, "HPA support seems " |
Tejun Heo | dda7aba | 2008-03-23 21:05:15 +0900 | [diff] [blame] | 1359 | "broken, skipping HPA handling\n"); |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1360 | dev->horkage |= ATA_HORKAGE_BROKEN_HPA; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1361 | |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1362 | /* we can continue if device aborted the command */ |
| 1363 | if (rc == -EACCES) |
| 1364 | rc = 0; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1365 | } |
Tejun Heo | 37301a5 | 2007-06-25 20:45:54 +0900 | [diff] [blame] | 1366 | |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1367 | return rc; |
| 1368 | } |
| 1369 | |
| 1370 | /* nothing to do? */ |
| 1371 | if (native_sectors <= sectors || !ata_ignore_hpa) { |
| 1372 | if (!print_info || native_sectors == sectors) |
| 1373 | return 0; |
| 1374 | |
| 1375 | if (native_sectors > sectors) |
| 1376 | ata_dev_printk(dev, KERN_INFO, |
| 1377 | "HPA detected: current %llu, native %llu\n", |
| 1378 | (unsigned long long)sectors, |
| 1379 | (unsigned long long)native_sectors); |
| 1380 | else if (native_sectors < sectors) |
| 1381 | ata_dev_printk(dev, KERN_WARNING, |
| 1382 | "native sectors (%llu) is smaller than " |
| 1383 | "sectors (%llu)\n", |
| 1384 | (unsigned long long)native_sectors, |
| 1385 | (unsigned long long)sectors); |
| 1386 | return 0; |
| 1387 | } |
| 1388 | |
| 1389 | /* let's unlock HPA */ |
| 1390 | rc = ata_set_max_sectors(dev, native_sectors); |
| 1391 | if (rc == -EACCES) { |
| 1392 | /* if device aborted the command, skip HPA resizing */ |
| 1393 | ata_dev_printk(dev, KERN_WARNING, "device aborted resize " |
| 1394 | "(%llu -> %llu), skipping HPA handling\n", |
| 1395 | (unsigned long long)sectors, |
| 1396 | (unsigned long long)native_sectors); |
| 1397 | dev->horkage |= ATA_HORKAGE_BROKEN_HPA; |
| 1398 | return 0; |
| 1399 | } else if (rc) |
| 1400 | return rc; |
| 1401 | |
| 1402 | /* re-read IDENTIFY data */ |
| 1403 | rc = ata_dev_reread_id(dev, 0); |
| 1404 | if (rc) { |
| 1405 | ata_dev_printk(dev, KERN_ERR, "failed to re-read IDENTIFY " |
| 1406 | "data after HPA resizing\n"); |
| 1407 | return rc; |
| 1408 | } |
| 1409 | |
| 1410 | if (print_info) { |
| 1411 | u64 new_sectors = ata_id_n_sectors(dev->id); |
| 1412 | ata_dev_printk(dev, KERN_INFO, |
| 1413 | "HPA unlocked: %llu -> %llu, native %llu\n", |
| 1414 | (unsigned long long)sectors, |
| 1415 | (unsigned long long)new_sectors, |
| 1416 | (unsigned long long)native_sectors); |
| 1417 | } |
| 1418 | |
| 1419 | return 0; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1420 | } |
| 1421 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 1422 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1423 | * ata_dump_id - IDENTIFY DEVICE info debugging output |
Tejun Heo | 0bd3300 | 2006-02-12 22:47:05 +0900 | [diff] [blame] | 1424 | * @id: IDENTIFY DEVICE page to dump |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1425 | * |
Tejun Heo | 0bd3300 | 2006-02-12 22:47:05 +0900 | [diff] [blame] | 1426 | * Dump selected 16-bit words from the given IDENTIFY DEVICE |
| 1427 | * page. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1428 | * |
| 1429 | * LOCKING: |
| 1430 | * caller. |
| 1431 | */ |
| 1432 | |
Tejun Heo | 0bd3300 | 2006-02-12 22:47:05 +0900 | [diff] [blame] | 1433 | static inline void ata_dump_id(const u16 *id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1434 | { |
| 1435 | DPRINTK("49==0x%04x " |
| 1436 | "53==0x%04x " |
| 1437 | "63==0x%04x " |
| 1438 | "64==0x%04x " |
| 1439 | "75==0x%04x \n", |
Tejun Heo | 0bd3300 | 2006-02-12 22:47:05 +0900 | [diff] [blame] | 1440 | id[49], |
| 1441 | id[53], |
| 1442 | id[63], |
| 1443 | id[64], |
| 1444 | id[75]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1445 | DPRINTK("80==0x%04x " |
| 1446 | "81==0x%04x " |
| 1447 | "82==0x%04x " |
| 1448 | "83==0x%04x " |
| 1449 | "84==0x%04x \n", |
Tejun Heo | 0bd3300 | 2006-02-12 22:47:05 +0900 | [diff] [blame] | 1450 | id[80], |
| 1451 | id[81], |
| 1452 | id[82], |
| 1453 | id[83], |
| 1454 | id[84]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1455 | DPRINTK("88==0x%04x " |
| 1456 | "93==0x%04x\n", |
Tejun Heo | 0bd3300 | 2006-02-12 22:47:05 +0900 | [diff] [blame] | 1457 | id[88], |
| 1458 | id[93]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1459 | } |
| 1460 | |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 1461 | /** |
| 1462 | * ata_id_xfermask - Compute xfermask from the given IDENTIFY data |
| 1463 | * @id: IDENTIFY data to compute xfer mask from |
| 1464 | * |
| 1465 | * Compute the xfermask for this device. This is not as trivial |
| 1466 | * as it seems if we must consider early devices correctly. |
| 1467 | * |
| 1468 | * FIXME: pre IDE drive timing (do we care ?). |
| 1469 | * |
| 1470 | * LOCKING: |
| 1471 | * None. |
| 1472 | * |
| 1473 | * RETURNS: |
| 1474 | * Computed xfermask |
| 1475 | */ |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 1476 | unsigned long ata_id_xfermask(const u16 *id) |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 1477 | { |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 1478 | unsigned long pio_mask, mwdma_mask, udma_mask; |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 1479 | |
| 1480 | /* Usual case. Word 53 indicates word 64 is valid */ |
| 1481 | if (id[ATA_ID_FIELD_VALID] & (1 << 1)) { |
| 1482 | pio_mask = id[ATA_ID_PIO_MODES] & 0x03; |
| 1483 | pio_mask <<= 3; |
| 1484 | pio_mask |= 0x7; |
| 1485 | } else { |
| 1486 | /* If word 64 isn't valid then Word 51 high byte holds |
| 1487 | * the PIO timing number for the maximum. Turn it into |
| 1488 | * a mask. |
| 1489 | */ |
Lennert Buytenhek | 7a0f1c8 | 2007-01-29 13:28:47 +0100 | [diff] [blame] | 1490 | u8 mode = (id[ATA_ID_OLD_PIO_MODES] >> 8) & 0xFF; |
Alan Cox | 46767aeb | 2006-09-29 18:26:47 +0100 | [diff] [blame] | 1491 | if (mode < 5) /* Valid PIO range */ |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1492 | pio_mask = (2 << mode) - 1; |
Alan Cox | 46767aeb | 2006-09-29 18:26:47 +0100 | [diff] [blame] | 1493 | else |
| 1494 | pio_mask = 1; |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 1495 | |
| 1496 | /* But wait.. there's more. Design your standards by |
| 1497 | * committee and you too can get a free iordy field to |
| 1498 | * process. However its the speeds not the modes that |
| 1499 | * are supported... Note drivers using the timing API |
| 1500 | * will get this right anyway |
| 1501 | */ |
| 1502 | } |
| 1503 | |
| 1504 | mwdma_mask = id[ATA_ID_MWDMA_MODES] & 0x07; |
Tejun Heo | fb21f0d | 2006-03-12 12:34:35 +0900 | [diff] [blame] | 1505 | |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 1506 | if (ata_id_is_cfa(id)) { |
| 1507 | /* |
| 1508 | * Process compact flash extended modes |
| 1509 | */ |
| 1510 | int pio = id[163] & 0x7; |
| 1511 | int dma = (id[163] >> 3) & 7; |
| 1512 | |
| 1513 | if (pio) |
| 1514 | pio_mask |= (1 << 5); |
| 1515 | if (pio > 1) |
| 1516 | pio_mask |= (1 << 6); |
| 1517 | if (dma) |
| 1518 | mwdma_mask |= (1 << 3); |
| 1519 | if (dma > 1) |
| 1520 | mwdma_mask |= (1 << 4); |
| 1521 | } |
| 1522 | |
Tejun Heo | fb21f0d | 2006-03-12 12:34:35 +0900 | [diff] [blame] | 1523 | udma_mask = 0; |
| 1524 | if (id[ATA_ID_FIELD_VALID] & (1 << 2)) |
| 1525 | udma_mask = id[ATA_ID_UDMA_MODES] & 0xff; |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 1526 | |
| 1527 | return ata_pack_xfermask(pio_mask, mwdma_mask, udma_mask); |
| 1528 | } |
| 1529 | |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 1530 | /** |
Jeff Garzik | 442eacc | 2007-12-19 04:25:10 -0500 | [diff] [blame] | 1531 | * ata_pio_queue_task - Queue port_task |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 1532 | * @ap: The ata_port to queue port_task for |
Randy Dunlap | e2a7f77 | 2006-05-18 10:50:18 -0700 | [diff] [blame] | 1533 | * @fn: workqueue function to be scheduled |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 1534 | * @data: data for @fn to use |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 1535 | * @delay: delay time in msecs for workqueue function |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 1536 | * |
| 1537 | * Schedule @fn(@data) for execution after @delay jiffies using |
| 1538 | * port_task. There is one port_task per port and it's the |
| 1539 | * user(low level driver)'s responsibility to make sure that only |
| 1540 | * one task is active at any given time. |
| 1541 | * |
| 1542 | * libata core layer takes care of synchronization between |
Jeff Garzik | 442eacc | 2007-12-19 04:25:10 -0500 | [diff] [blame] | 1543 | * port_task and EH. ata_pio_queue_task() may be ignored for EH |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 1544 | * synchronization. |
| 1545 | * |
| 1546 | * LOCKING: |
| 1547 | * Inherited from caller. |
| 1548 | */ |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 1549 | void ata_pio_queue_task(struct ata_port *ap, void *data, unsigned long delay) |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 1550 | { |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 1551 | ap->port_task_data = data; |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 1552 | |
Oleg Nesterov | 45a66c1 | 2007-07-09 11:46:13 -0700 | [diff] [blame] | 1553 | /* may fail if ata_port_flush_task() in progress */ |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 1554 | queue_delayed_work(ata_wq, &ap->port_task, msecs_to_jiffies(delay)); |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 1555 | } |
| 1556 | |
| 1557 | /** |
| 1558 | * ata_port_flush_task - Flush port_task |
| 1559 | * @ap: The ata_port to flush port_task for |
| 1560 | * |
| 1561 | * After this function completes, port_task is guranteed not to |
| 1562 | * be running or scheduled. |
| 1563 | * |
| 1564 | * LOCKING: |
| 1565 | * Kernel thread context (may sleep) |
| 1566 | */ |
| 1567 | void ata_port_flush_task(struct ata_port *ap) |
| 1568 | { |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 1569 | DPRINTK("ENTER\n"); |
| 1570 | |
Oleg Nesterov | 45a66c1 | 2007-07-09 11:46:13 -0700 | [diff] [blame] | 1571 | cancel_rearming_delayed_work(&ap->port_task); |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 1572 | |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 1573 | if (ata_msg_ctl(ap)) |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 1574 | ata_port_printk(ap, KERN_DEBUG, "%s: EXIT\n", __func__); |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 1575 | } |
| 1576 | |
Adrian Bunk | 7102d23 | 2007-01-04 00:09:36 +0100 | [diff] [blame] | 1577 | static void ata_qc_complete_internal(struct ata_queued_cmd *qc) |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1578 | { |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1579 | struct completion *waiting = qc->private_data; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1580 | |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1581 | complete(waiting); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1582 | } |
| 1583 | |
| 1584 | /** |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1585 | * ata_exec_internal_sg - execute libata internal command |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1586 | * @dev: Device to which the command is sent |
| 1587 | * @tf: Taskfile registers for the command and the result |
Tejun Heo | d69cf37 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 1588 | * @cdb: CDB for packet command |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1589 | * @dma_dir: Data tranfer direction of the command |
Randy Dunlap | 5c1ad8b | 2007-10-18 14:12:26 -0700 | [diff] [blame] | 1590 | * @sgl: sg list for the data buffer of the command |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1591 | * @n_elem: Number of sg entries |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1592 | * @timeout: Timeout in msecs (0 for default) |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1593 | * |
| 1594 | * Executes libata internal command with timeout. @tf contains |
| 1595 | * command on entry and result on return. Timeout and error |
| 1596 | * conditions are reported via return value. No recovery action |
| 1597 | * is taken after a command times out. It's caller's duty to |
| 1598 | * clean up after timeout. |
| 1599 | * |
| 1600 | * LOCKING: |
| 1601 | * None. Should be called with kernel context, might sleep. |
Tejun Heo | 551e888 | 2006-06-12 14:09:49 +0900 | [diff] [blame] | 1602 | * |
| 1603 | * RETURNS: |
| 1604 | * Zero on success, AC_ERR_* mask on failure |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1605 | */ |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1606 | unsigned ata_exec_internal_sg(struct ata_device *dev, |
| 1607 | struct ata_taskfile *tf, const u8 *cdb, |
Jens Axboe | 8726021 | 2007-10-16 11:14:12 +0200 | [diff] [blame] | 1608 | int dma_dir, struct scatterlist *sgl, |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1609 | unsigned int n_elem, unsigned long timeout) |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1610 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 1611 | struct ata_link *link = dev->link; |
| 1612 | struct ata_port *ap = link->ap; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1613 | u8 command = tf->command; |
Tejun Heo | 87fbc5a | 2008-05-20 02:17:54 +0900 | [diff] [blame] | 1614 | int auto_timeout = 0; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1615 | struct ata_queued_cmd *qc; |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 1616 | unsigned int tag, preempted_tag; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 1617 | u32 preempted_sactive, preempted_qc_active; |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1618 | int preempted_nr_active_links; |
Ingo Molnar | 60be6b9 | 2006-07-03 00:25:26 -0700 | [diff] [blame] | 1619 | DECLARE_COMPLETION_ONSTACK(wait); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1620 | unsigned long flags; |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1621 | unsigned int err_mask; |
Tejun Heo | d95a717 | 2006-05-15 20:58:14 +0900 | [diff] [blame] | 1622 | int rc; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1623 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1624 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1625 | |
Tejun Heo | e318049 | 2006-05-15 20:58:09 +0900 | [diff] [blame] | 1626 | /* no internal command while frozen */ |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 1627 | if (ap->pflags & ATA_PFLAG_FROZEN) { |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1628 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | e318049 | 2006-05-15 20:58:09 +0900 | [diff] [blame] | 1629 | return AC_ERR_SYSTEM; |
| 1630 | } |
| 1631 | |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 1632 | /* initialize internal qc */ |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1633 | |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 1634 | /* XXX: Tag 0 is used for drivers with legacy EH as some |
| 1635 | * drivers choke if any other tag is given. This breaks |
| 1636 | * ata_tag_internal() test for those drivers. Don't use new |
| 1637 | * EH stuff without converting to it. |
| 1638 | */ |
| 1639 | if (ap->ops->error_handler) |
| 1640 | tag = ATA_TAG_INTERNAL; |
| 1641 | else |
| 1642 | tag = 0; |
| 1643 | |
Tejun Heo | 6cec4a3 | 2006-05-15 21:03:41 +0900 | [diff] [blame] | 1644 | if (test_and_set_bit(tag, &ap->qc_allocated)) |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 1645 | BUG(); |
Tejun Heo | f69499f | 2006-05-15 20:58:03 +0900 | [diff] [blame] | 1646 | qc = __ata_qc_from_tag(ap, tag); |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 1647 | |
| 1648 | qc->tag = tag; |
| 1649 | qc->scsicmd = NULL; |
| 1650 | qc->ap = ap; |
| 1651 | qc->dev = dev; |
| 1652 | ata_qc_reinit(qc); |
| 1653 | |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 1654 | preempted_tag = link->active_tag; |
| 1655 | preempted_sactive = link->sactive; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 1656 | preempted_qc_active = ap->qc_active; |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1657 | preempted_nr_active_links = ap->nr_active_links; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 1658 | link->active_tag = ATA_TAG_POISON; |
| 1659 | link->sactive = 0; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 1660 | ap->qc_active = 0; |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1661 | ap->nr_active_links = 0; |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 1662 | |
| 1663 | /* prepare & issue qc */ |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1664 | qc->tf = *tf; |
Tejun Heo | d69cf37 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 1665 | if (cdb) |
| 1666 | memcpy(qc->cdb, cdb, ATAPI_CDB_LEN); |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 1667 | qc->flags |= ATA_QCFLAG_RESULT_TF; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1668 | qc->dma_dir = dma_dir; |
| 1669 | if (dma_dir != DMA_NONE) { |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1670 | unsigned int i, buflen = 0; |
Jens Axboe | 8726021 | 2007-10-16 11:14:12 +0200 | [diff] [blame] | 1671 | struct scatterlist *sg; |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1672 | |
Jens Axboe | 8726021 | 2007-10-16 11:14:12 +0200 | [diff] [blame] | 1673 | for_each_sg(sgl, sg, n_elem, i) |
| 1674 | buflen += sg->length; |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1675 | |
Jens Axboe | 8726021 | 2007-10-16 11:14:12 +0200 | [diff] [blame] | 1676 | ata_sg_init(qc, sgl, n_elem); |
Brian King | 49c8042 | 2007-01-30 11:32:26 -0600 | [diff] [blame] | 1677 | qc->nbytes = buflen; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1678 | } |
| 1679 | |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1680 | qc->private_data = &wait; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1681 | qc->complete_fn = ata_qc_complete_internal; |
| 1682 | |
Tejun Heo | 8e0e694 | 2006-03-31 20:41:11 +0900 | [diff] [blame] | 1683 | ata_qc_issue(qc); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1684 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1685 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1686 | |
Tejun Heo | 87fbc5a | 2008-05-20 02:17:54 +0900 | [diff] [blame] | 1687 | if (!timeout) { |
| 1688 | if (ata_probe_timeout) |
| 1689 | timeout = ata_probe_timeout * 1000; |
| 1690 | else { |
| 1691 | timeout = ata_internal_cmd_timeout(dev, command); |
| 1692 | auto_timeout = 1; |
| 1693 | } |
| 1694 | } |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1695 | |
| 1696 | rc = wait_for_completion_timeout(&wait, msecs_to_jiffies(timeout)); |
Albert Lee | 41ade50 | 2006-03-14 11:19:04 +0800 | [diff] [blame] | 1697 | |
Tejun Heo | d95a717 | 2006-05-15 20:58:14 +0900 | [diff] [blame] | 1698 | ata_port_flush_task(ap); |
| 1699 | |
| 1700 | if (!rc) { |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1701 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1702 | |
| 1703 | /* We're racing with irq here. If we lose, the |
| 1704 | * following test prevents us from completing the qc |
Tejun Heo | d95a717 | 2006-05-15 20:58:14 +0900 | [diff] [blame] | 1705 | * twice. If we win, the port is frozen and will be |
| 1706 | * cleaned up by ->post_internal_cmd(). |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1707 | */ |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1708 | if (qc->flags & ATA_QCFLAG_ACTIVE) { |
Tejun Heo | d95a717 | 2006-05-15 20:58:14 +0900 | [diff] [blame] | 1709 | qc->err_mask |= AC_ERR_TIMEOUT; |
| 1710 | |
| 1711 | if (ap->ops->error_handler) |
| 1712 | ata_port_freeze(ap); |
| 1713 | else |
| 1714 | ata_qc_complete(qc); |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 1715 | |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 1716 | if (ata_msg_warn(ap)) |
| 1717 | ata_dev_printk(dev, KERN_WARNING, |
Tejun Heo | 8857455 | 2006-06-25 20:00:35 +0900 | [diff] [blame] | 1718 | "qc timeout (cmd 0x%x)\n", command); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1719 | } |
| 1720 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1721 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1722 | } |
| 1723 | |
Tejun Heo | d95a717 | 2006-05-15 20:58:14 +0900 | [diff] [blame] | 1724 | /* do post_internal_cmd */ |
| 1725 | if (ap->ops->post_internal_cmd) |
| 1726 | ap->ops->post_internal_cmd(qc); |
| 1727 | |
Tejun Heo | a51d644 | 2007-03-20 15:24:11 +0900 | [diff] [blame] | 1728 | /* perform minimal error analysis */ |
| 1729 | if (qc->flags & ATA_QCFLAG_FAILED) { |
| 1730 | if (qc->result_tf.command & (ATA_ERR | ATA_DF)) |
| 1731 | qc->err_mask |= AC_ERR_DEV; |
| 1732 | |
| 1733 | if (!qc->err_mask) |
| 1734 | qc->err_mask |= AC_ERR_OTHER; |
| 1735 | |
| 1736 | if (qc->err_mask & ~AC_ERR_OTHER) |
| 1737 | qc->err_mask &= ~AC_ERR_OTHER; |
Tejun Heo | d95a717 | 2006-05-15 20:58:14 +0900 | [diff] [blame] | 1738 | } |
| 1739 | |
Tejun Heo | 1586930 | 2006-05-15 20:57:33 +0900 | [diff] [blame] | 1740 | /* finish up */ |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1741 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | 1586930 | 2006-05-15 20:57:33 +0900 | [diff] [blame] | 1742 | |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 1743 | *tf = qc->result_tf; |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1744 | err_mask = qc->err_mask; |
| 1745 | |
| 1746 | ata_qc_free(qc); |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 1747 | link->active_tag = preempted_tag; |
| 1748 | link->sactive = preempted_sactive; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 1749 | ap->qc_active = preempted_qc_active; |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1750 | ap->nr_active_links = preempted_nr_active_links; |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1751 | |
Tejun Heo | 1f7dd3e9 | 2006-03-24 15:25:30 +0900 | [diff] [blame] | 1752 | /* XXX - Some LLDDs (sata_mv) disable port on command failure. |
| 1753 | * Until those drivers are fixed, we detect the condition |
| 1754 | * here, fail the command with AC_ERR_SYSTEM and reenable the |
| 1755 | * port. |
| 1756 | * |
| 1757 | * Note that this doesn't change any behavior as internal |
| 1758 | * command failure results in disabling the device in the |
| 1759 | * higher layer for LLDDs without new reset/EH callbacks. |
| 1760 | * |
| 1761 | * Kill the following code as soon as those drivers are fixed. |
| 1762 | */ |
Tejun Heo | 198e0fe | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 1763 | if (ap->flags & ATA_FLAG_DISABLED) { |
Tejun Heo | 1f7dd3e9 | 2006-03-24 15:25:30 +0900 | [diff] [blame] | 1764 | err_mask |= AC_ERR_SYSTEM; |
| 1765 | ata_port_probe(ap); |
| 1766 | } |
| 1767 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1768 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | 1586930 | 2006-05-15 20:57:33 +0900 | [diff] [blame] | 1769 | |
Tejun Heo | 87fbc5a | 2008-05-20 02:17:54 +0900 | [diff] [blame] | 1770 | if ((err_mask & AC_ERR_TIMEOUT) && auto_timeout) |
| 1771 | ata_internal_cmd_timed_out(dev, command); |
| 1772 | |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1773 | return err_mask; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1774 | } |
| 1775 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1776 | /** |
Tejun Heo | 33480a0 | 2006-12-12 02:15:31 +0900 | [diff] [blame] | 1777 | * ata_exec_internal - execute libata internal command |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1778 | * @dev: Device to which the command is sent |
| 1779 | * @tf: Taskfile registers for the command and the result |
| 1780 | * @cdb: CDB for packet command |
| 1781 | * @dma_dir: Data tranfer direction of the command |
| 1782 | * @buf: Data buffer of the command |
| 1783 | * @buflen: Length of data buffer |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1784 | * @timeout: Timeout in msecs (0 for default) |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1785 | * |
| 1786 | * Wrapper around ata_exec_internal_sg() which takes simple |
| 1787 | * buffer instead of sg list. |
| 1788 | * |
| 1789 | * LOCKING: |
| 1790 | * None. Should be called with kernel context, might sleep. |
| 1791 | * |
| 1792 | * RETURNS: |
| 1793 | * Zero on success, AC_ERR_* mask on failure |
| 1794 | */ |
| 1795 | unsigned ata_exec_internal(struct ata_device *dev, |
| 1796 | struct ata_taskfile *tf, const u8 *cdb, |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1797 | int dma_dir, void *buf, unsigned int buflen, |
| 1798 | unsigned long timeout) |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1799 | { |
Tejun Heo | 33480a0 | 2006-12-12 02:15:31 +0900 | [diff] [blame] | 1800 | struct scatterlist *psg = NULL, sg; |
| 1801 | unsigned int n_elem = 0; |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1802 | |
Tejun Heo | 33480a0 | 2006-12-12 02:15:31 +0900 | [diff] [blame] | 1803 | if (dma_dir != DMA_NONE) { |
| 1804 | WARN_ON(!buf); |
| 1805 | sg_init_one(&sg, buf, buflen); |
| 1806 | psg = &sg; |
| 1807 | n_elem++; |
| 1808 | } |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1809 | |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1810 | return ata_exec_internal_sg(dev, tf, cdb, dma_dir, psg, n_elem, |
| 1811 | timeout); |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1812 | } |
| 1813 | |
| 1814 | /** |
Tejun Heo | 977e6b9 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1815 | * ata_do_simple_cmd - execute simple internal command |
| 1816 | * @dev: Device to which the command is sent |
| 1817 | * @cmd: Opcode to execute |
| 1818 | * |
| 1819 | * Execute a 'simple' command, that only consists of the opcode |
| 1820 | * 'cmd' itself, without filling any other registers |
| 1821 | * |
| 1822 | * LOCKING: |
| 1823 | * Kernel thread context (may sleep). |
| 1824 | * |
| 1825 | * RETURNS: |
| 1826 | * Zero on success, AC_ERR_* mask on failure |
Tejun Heo | e58eb58 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1827 | */ |
Tejun Heo | 77b08fb | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1828 | unsigned int ata_do_simple_cmd(struct ata_device *dev, u8 cmd) |
Tejun Heo | e58eb58 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1829 | { |
| 1830 | struct ata_taskfile tf; |
Tejun Heo | e58eb58 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1831 | |
| 1832 | ata_tf_init(dev, &tf); |
| 1833 | |
| 1834 | tf.command = cmd; |
| 1835 | tf.flags |= ATA_TFLAG_DEVICE; |
| 1836 | tf.protocol = ATA_PROT_NODATA; |
| 1837 | |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1838 | return ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0); |
Tejun Heo | e58eb58 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1839 | } |
| 1840 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1841 | /** |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1842 | * ata_pio_need_iordy - check if iordy needed |
| 1843 | * @adev: ATA device |
| 1844 | * |
| 1845 | * Check if the current speed of the device requires IORDY. Used |
| 1846 | * by various controllers for chip configuration. |
| 1847 | */ |
Jeff Garzik | a617c09 | 2007-05-21 20:14:23 -0400 | [diff] [blame] | 1848 | |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1849 | unsigned int ata_pio_need_iordy(const struct ata_device *adev) |
| 1850 | { |
Alan Cox | 432729f | 2007-03-08 23:22:59 +0000 | [diff] [blame] | 1851 | /* Controller doesn't support IORDY. Probably a pointless check |
| 1852 | as the caller should know this */ |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 1853 | if (adev->link->ap->flags & ATA_FLAG_NO_IORDY) |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1854 | return 0; |
Alan Cox | 432729f | 2007-03-08 23:22:59 +0000 | [diff] [blame] | 1855 | /* PIO3 and higher it is mandatory */ |
| 1856 | if (adev->pio_mode > XFER_PIO_2) |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1857 | return 1; |
Alan Cox | 432729f | 2007-03-08 23:22:59 +0000 | [diff] [blame] | 1858 | /* We turn it on when possible */ |
| 1859 | if (ata_id_has_iordy(adev->id)) |
| 1860 | return 1; |
| 1861 | return 0; |
| 1862 | } |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 1863 | |
Alan Cox | 432729f | 2007-03-08 23:22:59 +0000 | [diff] [blame] | 1864 | /** |
| 1865 | * ata_pio_mask_no_iordy - Return the non IORDY mask |
| 1866 | * @adev: ATA device |
| 1867 | * |
| 1868 | * Compute the highest mode possible if we are not using iordy. Return |
| 1869 | * -1 if no iordy mode is available. |
| 1870 | */ |
Jeff Garzik | a617c09 | 2007-05-21 20:14:23 -0400 | [diff] [blame] | 1871 | |
Alan Cox | 432729f | 2007-03-08 23:22:59 +0000 | [diff] [blame] | 1872 | static u32 ata_pio_mask_no_iordy(const struct ata_device *adev) |
| 1873 | { |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1874 | /* If we have no drive specific rule, then PIO 2 is non IORDY */ |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1875 | if (adev->id[ATA_ID_FIELD_VALID] & 2) { /* EIDE */ |
Alan Cox | 432729f | 2007-03-08 23:22:59 +0000 | [diff] [blame] | 1876 | u16 pio = adev->id[ATA_ID_EIDE_PIO]; |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1877 | /* Is the speed faster than the drive allows non IORDY ? */ |
| 1878 | if (pio) { |
| 1879 | /* This is cycle times not frequency - watch the logic! */ |
| 1880 | if (pio > 240) /* PIO2 is 240nS per cycle */ |
Alan Cox | 432729f | 2007-03-08 23:22:59 +0000 | [diff] [blame] | 1881 | return 3 << ATA_SHIFT_PIO; |
| 1882 | return 7 << ATA_SHIFT_PIO; |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1883 | } |
| 1884 | } |
Alan Cox | 432729f | 2007-03-08 23:22:59 +0000 | [diff] [blame] | 1885 | return 3 << ATA_SHIFT_PIO; |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1886 | } |
| 1887 | |
| 1888 | /** |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1889 | * ata_dev_read_id - Read ID data from the specified device |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1890 | * @dev: target device |
| 1891 | * @p_class: pointer to class of the target device (may be changed) |
Tejun Heo | bff0464 | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 1892 | * @flags: ATA_READID_* flags |
Tejun Heo | fe635c7 | 2006-05-15 20:57:35 +0900 | [diff] [blame] | 1893 | * @id: buffer to read IDENTIFY data into |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1894 | * |
| 1895 | * Read ID data from the specified device. ATA_CMD_ID_ATA is |
| 1896 | * performed on ATA devices and ATA_CMD_ID_ATAPI on ATAPI |
Tejun Heo | aec5c3c | 2006-03-25 01:33:34 +0900 | [diff] [blame] | 1897 | * devices. This function also issues ATA_CMD_INIT_DEV_PARAMS |
| 1898 | * for pre-ATA4 drives. |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1899 | * |
Alan Cox | 50a9901 | 2007-08-08 14:27:00 +0100 | [diff] [blame] | 1900 | * FIXME: ATA_CMD_ID_ATA is optional for early drives and right |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1901 | * now we abort if we hit that case. |
Alan Cox | 50a9901 | 2007-08-08 14:27:00 +0100 | [diff] [blame] | 1902 | * |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1903 | * LOCKING: |
| 1904 | * Kernel thread context (may sleep) |
| 1905 | * |
| 1906 | * RETURNS: |
| 1907 | * 0 on success, -errno otherwise. |
| 1908 | */ |
Tejun Heo | a9beec9 | 2006-05-31 18:27:44 +0900 | [diff] [blame] | 1909 | int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class, |
Tejun Heo | bff0464 | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 1910 | unsigned int flags, u16 *id) |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1911 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 1912 | struct ata_port *ap = dev->link->ap; |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1913 | unsigned int class = *p_class; |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1914 | struct ata_taskfile tf; |
| 1915 | unsigned int err_mask = 0; |
| 1916 | const char *reason; |
Tejun Heo | 54936f8 | 2007-05-11 14:35:29 +0200 | [diff] [blame] | 1917 | int may_fallback = 1, tried_spinup = 0; |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1918 | int rc; |
| 1919 | |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 1920 | if (ata_msg_ctl(ap)) |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 1921 | ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER\n", __func__); |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1922 | |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1923 | retry: |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 1924 | ata_tf_init(dev, &tf); |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1925 | |
| 1926 | switch (class) { |
| 1927 | case ATA_DEV_ATA: |
| 1928 | tf.command = ATA_CMD_ID_ATA; |
| 1929 | break; |
| 1930 | case ATA_DEV_ATAPI: |
| 1931 | tf.command = ATA_CMD_ID_ATAPI; |
| 1932 | break; |
| 1933 | default: |
| 1934 | rc = -ENODEV; |
| 1935 | reason = "unsupported class"; |
| 1936 | goto err_out; |
| 1937 | } |
| 1938 | |
| 1939 | tf.protocol = ATA_PROT_PIO; |
Tejun Heo | 81afe89 | 2007-02-07 12:37:41 -0800 | [diff] [blame] | 1940 | |
| 1941 | /* Some devices choke if TF registers contain garbage. Make |
| 1942 | * sure those are properly initialized. |
| 1943 | */ |
| 1944 | tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 1945 | |
| 1946 | /* Device presence detection is unreliable on some |
| 1947 | * controllers. Always poll IDENTIFY if available. |
| 1948 | */ |
| 1949 | tf.flags |= ATA_TFLAG_POLLING; |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1950 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 1951 | err_mask = ata_exec_internal(dev, &tf, NULL, DMA_FROM_DEVICE, |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1952 | id, sizeof(id[0]) * ATA_ID_WORDS, 0); |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1953 | if (err_mask) { |
Tejun Heo | 800b399 | 2006-12-03 21:34:13 +0900 | [diff] [blame] | 1954 | if (err_mask & AC_ERR_NODEV_HINT) { |
Tejun Heo | 1ffc151 | 2008-03-23 15:16:53 +0900 | [diff] [blame] | 1955 | ata_dev_printk(dev, KERN_DEBUG, |
| 1956 | "NODEV after polling detection\n"); |
Tejun Heo | 55a8e2c | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 1957 | return -ENOENT; |
| 1958 | } |
| 1959 | |
Tejun Heo | 1ffc151 | 2008-03-23 15:16:53 +0900 | [diff] [blame] | 1960 | if ((err_mask == AC_ERR_DEV) && (tf.feature & ATA_ABORTED)) { |
| 1961 | /* Device or controller might have reported |
| 1962 | * the wrong device class. Give a shot at the |
| 1963 | * other IDENTIFY if the current one is |
| 1964 | * aborted by the device. |
| 1965 | */ |
| 1966 | if (may_fallback) { |
| 1967 | may_fallback = 0; |
Tejun Heo | 54936f8 | 2007-05-11 14:35:29 +0200 | [diff] [blame] | 1968 | |
Tejun Heo | 1ffc151 | 2008-03-23 15:16:53 +0900 | [diff] [blame] | 1969 | if (class == ATA_DEV_ATA) |
| 1970 | class = ATA_DEV_ATAPI; |
| 1971 | else |
| 1972 | class = ATA_DEV_ATA; |
| 1973 | goto retry; |
| 1974 | } |
| 1975 | |
| 1976 | /* Control reaches here iff the device aborted |
| 1977 | * both flavors of IDENTIFYs which happens |
| 1978 | * sometimes with phantom devices. |
| 1979 | */ |
| 1980 | ata_dev_printk(dev, KERN_DEBUG, |
| 1981 | "both IDENTIFYs aborted, assuming NODEV\n"); |
| 1982 | return -ENOENT; |
Tejun Heo | 54936f8 | 2007-05-11 14:35:29 +0200 | [diff] [blame] | 1983 | } |
| 1984 | |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1985 | rc = -EIO; |
| 1986 | reason = "I/O error"; |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1987 | goto err_out; |
| 1988 | } |
| 1989 | |
Tejun Heo | 54936f8 | 2007-05-11 14:35:29 +0200 | [diff] [blame] | 1990 | /* Falling back doesn't make sense if ID data was read |
| 1991 | * successfully at least once. |
| 1992 | */ |
| 1993 | may_fallback = 0; |
| 1994 | |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1995 | swap_buf_le16(id, ATA_ID_WORDS); |
| 1996 | |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1997 | /* sanity check */ |
Tejun Heo | a4f5749 | 2006-09-12 20:35:49 -0700 | [diff] [blame] | 1998 | rc = -EINVAL; |
Alan Cox | 6070068 | 2007-06-07 16:13:55 +0100 | [diff] [blame] | 1999 | reason = "device reports invalid type"; |
Tejun Heo | a4f5749 | 2006-09-12 20:35:49 -0700 | [diff] [blame] | 2000 | |
| 2001 | if (class == ATA_DEV_ATA) { |
| 2002 | if (!ata_id_is_ata(id) && !ata_id_is_cfa(id)) |
| 2003 | goto err_out; |
| 2004 | } else { |
| 2005 | if (ata_id_is_ata(id)) |
| 2006 | goto err_out; |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2007 | } |
| 2008 | |
Mark Lord | 169439c | 2007-04-17 18:26:07 -0400 | [diff] [blame] | 2009 | if (!tried_spinup && (id[2] == 0x37c8 || id[2] == 0x738c)) { |
| 2010 | tried_spinup = 1; |
| 2011 | /* |
| 2012 | * Drive powered-up in standby mode, and requires a specific |
| 2013 | * SET_FEATURES spin-up subcommand before it will accept |
| 2014 | * anything other than the original IDENTIFY command. |
| 2015 | */ |
Jeff Garzik | 218f3d3 | 2007-10-25 00:33:27 -0400 | [diff] [blame] | 2016 | err_mask = ata_dev_set_feature(dev, SETFEATURES_SPINUP, 0); |
Ryan Power | fb0582f9 | 2007-08-10 13:59:35 -0700 | [diff] [blame] | 2017 | if (err_mask && id[2] != 0x738c) { |
Mark Lord | 169439c | 2007-04-17 18:26:07 -0400 | [diff] [blame] | 2018 | rc = -EIO; |
| 2019 | reason = "SPINUP failed"; |
| 2020 | goto err_out; |
| 2021 | } |
| 2022 | /* |
| 2023 | * If the drive initially returned incomplete IDENTIFY info, |
| 2024 | * we now must reissue the IDENTIFY command. |
| 2025 | */ |
| 2026 | if (id[2] == 0x37c8) |
| 2027 | goto retry; |
| 2028 | } |
| 2029 | |
Tejun Heo | bff0464 | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 2030 | if ((flags & ATA_READID_POSTRESET) && class == ATA_DEV_ATA) { |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2031 | /* |
| 2032 | * The exact sequence expected by certain pre-ATA4 drives is: |
| 2033 | * SRST RESET |
Alan Cox | 50a9901 | 2007-08-08 14:27:00 +0100 | [diff] [blame] | 2034 | * IDENTIFY (optional in early ATA) |
| 2035 | * INITIALIZE DEVICE PARAMETERS (later IDE and ATA) |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2036 | * anything else.. |
| 2037 | * Some drives were very specific about that exact sequence. |
Alan Cox | 50a9901 | 2007-08-08 14:27:00 +0100 | [diff] [blame] | 2038 | * |
| 2039 | * Note that ATA4 says lba is mandatory so the second check |
| 2040 | * shoud never trigger. |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2041 | */ |
| 2042 | if (ata_id_major_version(id) < 4 || !ata_id_has_lba(id)) { |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 2043 | err_mask = ata_dev_init_params(dev, id[3], id[6]); |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2044 | if (err_mask) { |
| 2045 | rc = -EIO; |
| 2046 | reason = "INIT_DEV_PARAMS failed"; |
| 2047 | goto err_out; |
| 2048 | } |
| 2049 | |
| 2050 | /* current CHS translation info (id[53-58]) might be |
| 2051 | * changed. reread the identify device info. |
| 2052 | */ |
Tejun Heo | bff0464 | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 2053 | flags &= ~ATA_READID_POSTRESET; |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2054 | goto retry; |
| 2055 | } |
| 2056 | } |
| 2057 | |
| 2058 | *p_class = class; |
Tejun Heo | fe635c7 | 2006-05-15 20:57:35 +0900 | [diff] [blame] | 2059 | |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2060 | return 0; |
| 2061 | |
| 2062 | err_out: |
Tejun Heo | 8857455 | 2006-06-25 20:00:35 +0900 | [diff] [blame] | 2063 | if (ata_msg_warn(ap)) |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 2064 | ata_dev_printk(dev, KERN_WARNING, "failed to IDENTIFY " |
Tejun Heo | 8857455 | 2006-06-25 20:00:35 +0900 | [diff] [blame] | 2065 | "(%s, err_mask=0x%x)\n", reason, err_mask); |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2066 | return rc; |
| 2067 | } |
| 2068 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 2069 | static inline u8 ata_dev_knobble(struct ata_device *dev) |
Tejun Heo | 4b2f3ed | 2006-03-01 16:09:36 +0900 | [diff] [blame] | 2070 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2071 | struct ata_port *ap = dev->link->ap; |
| 2072 | return ((ap->cbl == ATA_CBL_SATA) && (!ata_id_is_sata(dev->id))); |
Tejun Heo | 4b2f3ed | 2006-03-01 16:09:36 +0900 | [diff] [blame] | 2073 | } |
| 2074 | |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 2075 | static void ata_dev_config_ncq(struct ata_device *dev, |
| 2076 | char *desc, size_t desc_sz) |
| 2077 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2078 | struct ata_port *ap = dev->link->ap; |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 2079 | int hdepth = 0, ddepth = ata_id_queue_depth(dev->id); |
| 2080 | |
| 2081 | if (!ata_id_has_ncq(dev->id)) { |
| 2082 | desc[0] = '\0'; |
| 2083 | return; |
| 2084 | } |
Tejun Heo | 75683fe | 2007-07-05 13:31:27 +0900 | [diff] [blame] | 2085 | if (dev->horkage & ATA_HORKAGE_NONCQ) { |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 2086 | snprintf(desc, desc_sz, "NCQ (not used)"); |
| 2087 | return; |
| 2088 | } |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 2089 | if (ap->flags & ATA_FLAG_NCQ) { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2090 | hdepth = min(ap->scsi_host->can_queue, ATA_MAX_QUEUE - 1); |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 2091 | dev->flags |= ATA_DFLAG_NCQ; |
| 2092 | } |
| 2093 | |
| 2094 | if (hdepth >= ddepth) |
| 2095 | snprintf(desc, desc_sz, "NCQ (depth %d)", ddepth); |
| 2096 | else |
| 2097 | snprintf(desc, desc_sz, "NCQ (depth %d/%d)", hdepth, ddepth); |
| 2098 | } |
| 2099 | |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2100 | /** |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2101 | * ata_dev_configure - Configure the specified ATA/ATAPI device |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2102 | * @dev: Target device to configure |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2103 | * |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2104 | * Configure @dev according to @dev->id. Generic and low-level |
| 2105 | * driver specific fixups are also applied. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2106 | * |
| 2107 | * LOCKING: |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2108 | * Kernel thread context (may sleep) |
| 2109 | * |
| 2110 | * RETURNS: |
| 2111 | * 0 on success, -errno otherwise |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2112 | */ |
Tejun Heo | efdaedc | 2006-11-01 18:38:52 +0900 | [diff] [blame] | 2113 | int ata_dev_configure(struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2114 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2115 | struct ata_port *ap = dev->link->ap; |
| 2116 | struct ata_eh_context *ehc = &dev->link->eh_context; |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 2117 | int print_info = ehc->i.flags & ATA_EHI_PRINTINFO; |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2118 | const u16 *id = dev->id; |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 2119 | unsigned long xfer_mask; |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 2120 | char revbuf[7]; /* XYZ-99\0 */ |
Eric D. Mudama | 3f64f56 | 2007-01-30 23:00:40 -0700 | [diff] [blame] | 2121 | char fwrevbuf[ATA_ID_FW_REV_LEN+1]; |
| 2122 | char modelbuf[ATA_ID_PROD_LEN+1]; |
Brian King | e6d902a | 2006-06-28 08:30:31 -0500 | [diff] [blame] | 2123 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2124 | |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 2125 | if (!ata_dev_enabled(dev) && ata_msg_info(ap)) { |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 2126 | ata_dev_printk(dev, KERN_INFO, "%s: ENTER/EXIT -- nodev\n", |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 2127 | __func__); |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2128 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2129 | } |
| 2130 | |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 2131 | if (ata_msg_probe(ap)) |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 2132 | ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2133 | |
Tejun Heo | 75683fe | 2007-07-05 13:31:27 +0900 | [diff] [blame] | 2134 | /* set horkage */ |
| 2135 | dev->horkage |= ata_dev_blacklisted(dev); |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 2136 | ata_force_horkage(dev); |
Tejun Heo | 75683fe | 2007-07-05 13:31:27 +0900 | [diff] [blame] | 2137 | |
Tejun Heo | 50af2fa | 2008-05-19 01:15:14 +0900 | [diff] [blame] | 2138 | if (dev->horkage & ATA_HORKAGE_DISABLE) { |
| 2139 | ata_dev_printk(dev, KERN_INFO, |
| 2140 | "unsupported device, disabling\n"); |
| 2141 | ata_dev_disable(dev); |
| 2142 | return 0; |
| 2143 | } |
| 2144 | |
Tejun Heo | 2486fa5 | 2008-07-31 07:52:40 +0900 | [diff] [blame] | 2145 | if ((!atapi_enabled || (ap->flags & ATA_FLAG_NO_ATAPI)) && |
| 2146 | dev->class == ATA_DEV_ATAPI) { |
| 2147 | ata_dev_printk(dev, KERN_WARNING, |
| 2148 | "WARNING: ATAPI is %s, device ignored.\n", |
| 2149 | atapi_enabled ? "not supported with this driver" |
| 2150 | : "disabled"); |
| 2151 | ata_dev_disable(dev); |
| 2152 | return 0; |
| 2153 | } |
| 2154 | |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 2155 | /* let ACPI work its magic */ |
| 2156 | rc = ata_acpi_on_devcfg(dev); |
| 2157 | if (rc) |
| 2158 | return rc; |
Kristen Carlson Accardi | 08573a8 | 2006-11-10 16:14:47 -0800 | [diff] [blame] | 2159 | |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 2160 | /* massage HPA, do it early as it might change IDENTIFY data */ |
| 2161 | rc = ata_hpa_resize(dev); |
| 2162 | if (rc) |
| 2163 | return rc; |
| 2164 | |
Tejun Heo | c39f5eb | 2006-03-13 19:51:19 +0900 | [diff] [blame] | 2165 | /* print device capabilities */ |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 2166 | if (ata_msg_probe(ap)) |
Tejun Heo | 8857455 | 2006-06-25 20:00:35 +0900 | [diff] [blame] | 2167 | ata_dev_printk(dev, KERN_DEBUG, |
| 2168 | "%s: cfg 49:%04x 82:%04x 83:%04x 84:%04x " |
| 2169 | "85:%04x 86:%04x 87:%04x 88:%04x\n", |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 2170 | __func__, |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 2171 | id[49], id[82], id[83], id[84], |
| 2172 | id[85], id[86], id[87], id[88]); |
Tejun Heo | c39f5eb | 2006-03-13 19:51:19 +0900 | [diff] [blame] | 2173 | |
Tejun Heo | 208a993 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 2174 | /* initialize to-be-configured parameters */ |
Tejun Heo | ea1dd4e | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 2175 | dev->flags &= ~ATA_DFLAG_CFG_MASK; |
Tejun Heo | 208a993 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 2176 | dev->max_sectors = 0; |
| 2177 | dev->cdb_len = 0; |
| 2178 | dev->n_sectors = 0; |
| 2179 | dev->cylinders = 0; |
| 2180 | dev->heads = 0; |
| 2181 | dev->sectors = 0; |
| 2182 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2183 | /* |
| 2184 | * common ATA, ATAPI feature tests |
| 2185 | */ |
| 2186 | |
Tejun Heo | ff8854b | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 2187 | /* find max transfer mode; for printk only */ |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2188 | xfer_mask = ata_id_xfermask(id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2189 | |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 2190 | if (ata_msg_probe(ap)) |
| 2191 | ata_dump_id(id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2192 | |
Albert Lee | ef143d5 | 2007-06-05 13:01:33 +0800 | [diff] [blame] | 2193 | /* SCSI only uses 4-char revisions, dump full 8 chars from ATA */ |
| 2194 | ata_id_c_string(dev->id, fwrevbuf, ATA_ID_FW_REV, |
| 2195 | sizeof(fwrevbuf)); |
| 2196 | |
| 2197 | ata_id_c_string(dev->id, modelbuf, ATA_ID_PROD, |
| 2198 | sizeof(modelbuf)); |
| 2199 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2200 | /* ATA-specific feature tests */ |
| 2201 | if (dev->class == ATA_DEV_ATA) { |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 2202 | if (ata_id_is_cfa(id)) { |
| 2203 | if (id[162] & 1) /* CPRM may make this media unusable */ |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 2204 | ata_dev_printk(dev, KERN_WARNING, |
| 2205 | "supports DRM functions and may " |
| 2206 | "not be fully accessable.\n"); |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 2207 | snprintf(revbuf, 7, "CFA"); |
Alan Cox | ae8d4ee | 2007-11-04 22:05:49 -0500 | [diff] [blame] | 2208 | } else { |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 2209 | snprintf(revbuf, 7, "ATA-%d", ata_id_major_version(id)); |
Alan Cox | ae8d4ee | 2007-11-04 22:05:49 -0500 | [diff] [blame] | 2210 | /* Warn the user if the device has TPM extensions */ |
| 2211 | if (ata_id_has_tpm(id)) |
| 2212 | ata_dev_printk(dev, KERN_WARNING, |
| 2213 | "supports DRM functions and may " |
| 2214 | "not be fully accessable.\n"); |
| 2215 | } |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 2216 | |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2217 | dev->n_sectors = ata_id_n_sectors(id); |
Tejun Heo | 2940740 | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 2218 | |
Eric D. Mudama | 3f64f56 | 2007-01-30 23:00:40 -0700 | [diff] [blame] | 2219 | if (dev->id[59] & 0x100) |
| 2220 | dev->multi_count = dev->id[59] & 0xff; |
| 2221 | |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2222 | if (ata_id_has_lba(id)) { |
Tejun Heo | 4c2d721 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 2223 | const char *lba_desc; |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 2224 | char ncq_desc[20]; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2225 | |
Tejun Heo | 4c2d721 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 2226 | lba_desc = "LBA"; |
| 2227 | dev->flags |= ATA_DFLAG_LBA; |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2228 | if (ata_id_has_lba48(id)) { |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2229 | dev->flags |= ATA_DFLAG_LBA48; |
Tejun Heo | 4c2d721 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 2230 | lba_desc = "LBA48"; |
Tejun Heo | 6fc49ad | 2006-11-11 20:10:45 +0900 | [diff] [blame] | 2231 | |
| 2232 | if (dev->n_sectors >= (1UL << 28) && |
| 2233 | ata_id_has_flush_ext(id)) |
| 2234 | dev->flags |= ATA_DFLAG_FLUSH_EXT; |
Tejun Heo | 4c2d721 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 2235 | } |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2236 | |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 2237 | /* config NCQ */ |
| 2238 | ata_dev_config_ncq(dev, ncq_desc, sizeof(ncq_desc)); |
| 2239 | |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2240 | /* print device info to dmesg */ |
Eric D. Mudama | 3f64f56 | 2007-01-30 23:00:40 -0700 | [diff] [blame] | 2241 | if (ata_msg_drv(ap) && print_info) { |
| 2242 | ata_dev_printk(dev, KERN_INFO, |
| 2243 | "%s: %s, %s, max %s\n", |
| 2244 | revbuf, modelbuf, fwrevbuf, |
| 2245 | ata_mode_string(xfer_mask)); |
| 2246 | ata_dev_printk(dev, KERN_INFO, |
| 2247 | "%Lu sectors, multi %u: %s %s\n", |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 2248 | (unsigned long long)dev->n_sectors, |
Eric D. Mudama | 3f64f56 | 2007-01-30 23:00:40 -0700 | [diff] [blame] | 2249 | dev->multi_count, lba_desc, ncq_desc); |
| 2250 | } |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2251 | } else { |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2252 | /* CHS */ |
| 2253 | |
| 2254 | /* Default translation */ |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2255 | dev->cylinders = id[1]; |
| 2256 | dev->heads = id[3]; |
| 2257 | dev->sectors = id[6]; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2258 | |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2259 | if (ata_id_current_chs_valid(id)) { |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2260 | /* Current CHS translation is valid. */ |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2261 | dev->cylinders = id[54]; |
| 2262 | dev->heads = id[55]; |
| 2263 | dev->sectors = id[56]; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2264 | } |
| 2265 | |
| 2266 | /* print device info to dmesg */ |
Eric D. Mudama | 3f64f56 | 2007-01-30 23:00:40 -0700 | [diff] [blame] | 2267 | if (ata_msg_drv(ap) && print_info) { |
Tejun Heo | 8857455 | 2006-06-25 20:00:35 +0900 | [diff] [blame] | 2268 | ata_dev_printk(dev, KERN_INFO, |
Eric D. Mudama | 3f64f56 | 2007-01-30 23:00:40 -0700 | [diff] [blame] | 2269 | "%s: %s, %s, max %s\n", |
| 2270 | revbuf, modelbuf, fwrevbuf, |
| 2271 | ata_mode_string(xfer_mask)); |
Jeff Garzik | a84471f | 2007-02-26 05:51:33 -0500 | [diff] [blame] | 2272 | ata_dev_printk(dev, KERN_INFO, |
Eric D. Mudama | 3f64f56 | 2007-01-30 23:00:40 -0700 | [diff] [blame] | 2273 | "%Lu sectors, multi %u, CHS %u/%u/%u\n", |
| 2274 | (unsigned long long)dev->n_sectors, |
| 2275 | dev->multi_count, dev->cylinders, |
| 2276 | dev->heads, dev->sectors); |
| 2277 | } |
Albert Lee | 07f6f7d | 2005-11-01 19:33:20 +0800 | [diff] [blame] | 2278 | } |
| 2279 | |
Tejun Heo | 6e7846e | 2006-02-12 23:32:58 +0900 | [diff] [blame] | 2280 | dev->cdb_len = 16; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2281 | } |
| 2282 | |
| 2283 | /* ATAPI-specific feature tests */ |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 2284 | else if (dev->class == ATA_DEV_ATAPI) { |
Tejun Heo | 854c73a | 2007-09-23 13:14:11 +0900 | [diff] [blame] | 2285 | const char *cdb_intr_string = ""; |
| 2286 | const char *atapi_an_string = ""; |
Tejun Heo | 9116300 | 2008-02-21 13:25:50 +0900 | [diff] [blame] | 2287 | const char *dma_dir_string = ""; |
Tejun Heo | 7d77b24 | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 2288 | u32 sntf; |
Albert Lee | 08a556d | 2006-03-31 13:29:04 +0800 | [diff] [blame] | 2289 | |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2290 | rc = atapi_cdb_len(id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2291 | if ((rc < 12) || (rc > ATAPI_CDB_LEN)) { |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 2292 | if (ata_msg_warn(ap)) |
Tejun Heo | 8857455 | 2006-06-25 20:00:35 +0900 | [diff] [blame] | 2293 | ata_dev_printk(dev, KERN_WARNING, |
| 2294 | "unsupported CDB len\n"); |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2295 | rc = -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2296 | goto err_out_nosup; |
| 2297 | } |
Tejun Heo | 6e7846e | 2006-02-12 23:32:58 +0900 | [diff] [blame] | 2298 | dev->cdb_len = (unsigned int) rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2299 | |
Tejun Heo | 7d77b24 | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 2300 | /* Enable ATAPI AN if both the host and device have |
| 2301 | * the support. If PMP is attached, SNTF is required |
| 2302 | * to enable ATAPI AN to discern between PHY status |
| 2303 | * changed notifications and ATAPI ANs. |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 2304 | */ |
Tejun Heo | 7d77b24 | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 2305 | if ((ap->flags & ATA_FLAG_AN) && ata_id_has_atapi_AN(id) && |
Tejun Heo | 071f44b | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 2306 | (!sata_pmp_attached(ap) || |
Tejun Heo | 7d77b24 | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 2307 | sata_scr_read(&ap->link, SCR_NOTIFICATION, &sntf) == 0)) { |
Tejun Heo | 854c73a | 2007-09-23 13:14:11 +0900 | [diff] [blame] | 2308 | unsigned int err_mask; |
| 2309 | |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 2310 | /* issue SET feature command to turn this on */ |
Jeff Garzik | 218f3d3 | 2007-10-25 00:33:27 -0400 | [diff] [blame] | 2311 | err_mask = ata_dev_set_feature(dev, |
| 2312 | SETFEATURES_SATA_ENABLE, SATA_AN); |
Tejun Heo | 854c73a | 2007-09-23 13:14:11 +0900 | [diff] [blame] | 2313 | if (err_mask) |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 2314 | ata_dev_printk(dev, KERN_ERR, |
Tejun Heo | 854c73a | 2007-09-23 13:14:11 +0900 | [diff] [blame] | 2315 | "failed to enable ATAPI AN " |
| 2316 | "(err_mask=0x%x)\n", err_mask); |
| 2317 | else { |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 2318 | dev->flags |= ATA_DFLAG_AN; |
Tejun Heo | 854c73a | 2007-09-23 13:14:11 +0900 | [diff] [blame] | 2319 | atapi_an_string = ", ATAPI AN"; |
| 2320 | } |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 2321 | } |
| 2322 | |
Albert Lee | 08a556d | 2006-03-31 13:29:04 +0800 | [diff] [blame] | 2323 | if (ata_id_cdb_intr(dev->id)) { |
Albert Lee | 312f7da | 2005-09-27 17:38:03 +0800 | [diff] [blame] | 2324 | dev->flags |= ATA_DFLAG_CDB_INTR; |
Albert Lee | 08a556d | 2006-03-31 13:29:04 +0800 | [diff] [blame] | 2325 | cdb_intr_string = ", CDB intr"; |
| 2326 | } |
Albert Lee | 312f7da | 2005-09-27 17:38:03 +0800 | [diff] [blame] | 2327 | |
Tejun Heo | 9116300 | 2008-02-21 13:25:50 +0900 | [diff] [blame] | 2328 | if (atapi_dmadir || atapi_id_dmadir(dev->id)) { |
| 2329 | dev->flags |= ATA_DFLAG_DMADIR; |
| 2330 | dma_dir_string = ", DMADIR"; |
| 2331 | } |
| 2332 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2333 | /* print device info to dmesg */ |
Borislav Petkov | 5afc814 | 2006-06-27 14:51:25 +0200 | [diff] [blame] | 2334 | if (ata_msg_drv(ap) && print_info) |
Albert Lee | ef143d5 | 2007-06-05 13:01:33 +0800 | [diff] [blame] | 2335 | ata_dev_printk(dev, KERN_INFO, |
Tejun Heo | 9116300 | 2008-02-21 13:25:50 +0900 | [diff] [blame] | 2336 | "ATAPI: %s, %s, max %s%s%s%s\n", |
Albert Lee | ef143d5 | 2007-06-05 13:01:33 +0800 | [diff] [blame] | 2337 | modelbuf, fwrevbuf, |
Tejun Heo | 12436c3 | 2006-05-15 20:59:15 +0900 | [diff] [blame] | 2338 | ata_mode_string(xfer_mask), |
Tejun Heo | 9116300 | 2008-02-21 13:25:50 +0900 | [diff] [blame] | 2339 | cdb_intr_string, atapi_an_string, |
| 2340 | dma_dir_string); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2341 | } |
| 2342 | |
Tejun Heo | 914ed35 | 2006-11-01 18:39:55 +0900 | [diff] [blame] | 2343 | /* determine max_sectors */ |
| 2344 | dev->max_sectors = ATA_MAX_SECTORS; |
| 2345 | if (dev->flags & ATA_DFLAG_LBA48) |
| 2346 | dev->max_sectors = ATA_MAX_SECTORS_LBA48; |
| 2347 | |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 2348 | if (!(dev->horkage & ATA_HORKAGE_IPM)) { |
| 2349 | if (ata_id_has_hipm(dev->id)) |
| 2350 | dev->flags |= ATA_DFLAG_HIPM; |
| 2351 | if (ata_id_has_dipm(dev->id)) |
| 2352 | dev->flags |= ATA_DFLAG_DIPM; |
| 2353 | } |
| 2354 | |
Alan Cox | c5038fc | 2007-10-25 14:21:16 +0100 | [diff] [blame] | 2355 | /* Limit PATA drive on SATA cable bridge transfers to udma5, |
| 2356 | 200 sectors */ |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 2357 | if (ata_dev_knobble(dev)) { |
Borislav Petkov | 5afc814 | 2006-06-27 14:51:25 +0200 | [diff] [blame] | 2358 | if (ata_msg_drv(ap) && print_info) |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 2359 | ata_dev_printk(dev, KERN_INFO, |
| 2360 | "applying bridge limits\n"); |
Tejun Heo | 5a52913 | 2006-03-24 14:07:50 +0900 | [diff] [blame] | 2361 | dev->udma_mask &= ATA_UDMA5; |
Tejun Heo | 4b2f3ed | 2006-03-01 16:09:36 +0900 | [diff] [blame] | 2362 | dev->max_sectors = ATA_MAX_SECTORS; |
| 2363 | } |
| 2364 | |
Tony Battersby | f8d8e57 | 2007-10-30 11:44:35 -0400 | [diff] [blame] | 2365 | if ((dev->class == ATA_DEV_ATAPI) && |
Albert Lee | f442cd8 | 2007-11-15 10:35:47 +0900 | [diff] [blame] | 2366 | (atapi_command_packet_set(id) == TYPE_TAPE)) { |
Tony Battersby | f8d8e57 | 2007-10-30 11:44:35 -0400 | [diff] [blame] | 2367 | dev->max_sectors = ATA_MAX_SECTORS_TAPE; |
Albert Lee | f442cd8 | 2007-11-15 10:35:47 +0900 | [diff] [blame] | 2368 | dev->horkage |= ATA_HORKAGE_STUCK_ERR; |
| 2369 | } |
Tony Battersby | f8d8e57 | 2007-10-30 11:44:35 -0400 | [diff] [blame] | 2370 | |
Tejun Heo | 75683fe | 2007-07-05 13:31:27 +0900 | [diff] [blame] | 2371 | if (dev->horkage & ATA_HORKAGE_MAX_SEC_128) |
Tejun Heo | 03ec52d | 2007-04-12 13:38:11 +0900 | [diff] [blame] | 2372 | dev->max_sectors = min_t(unsigned int, ATA_MAX_SECTORS_128, |
| 2373 | dev->max_sectors); |
Albert Lee | 18d6e9d | 2007-04-02 11:34:15 +0800 | [diff] [blame] | 2374 | |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 2375 | if (ata_dev_blacklisted(dev) & ATA_HORKAGE_IPM) { |
| 2376 | dev->horkage |= ATA_HORKAGE_IPM; |
| 2377 | |
| 2378 | /* reset link pm_policy for this port to no pm */ |
| 2379 | ap->pm_policy = MAX_PERFORMANCE; |
| 2380 | } |
| 2381 | |
Tejun Heo | 4b2f3ed | 2006-03-01 16:09:36 +0900 | [diff] [blame] | 2382 | if (ap->ops->dev_config) |
Alan | cd0d3bb | 2007-03-02 00:56:15 +0000 | [diff] [blame] | 2383 | ap->ops->dev_config(dev); |
Tejun Heo | 4b2f3ed | 2006-03-01 16:09:36 +0900 | [diff] [blame] | 2384 | |
Alan Cox | c5038fc | 2007-10-25 14:21:16 +0100 | [diff] [blame] | 2385 | if (dev->horkage & ATA_HORKAGE_DIAGNOSTIC) { |
| 2386 | /* Let the user know. We don't want to disallow opens for |
| 2387 | rescue purposes, or in case the vendor is just a blithering |
| 2388 | idiot. Do this after the dev_config call as some controllers |
| 2389 | with buggy firmware may want to avoid reporting false device |
| 2390 | bugs */ |
| 2391 | |
| 2392 | if (print_info) { |
| 2393 | ata_dev_printk(dev, KERN_WARNING, |
| 2394 | "Drive reports diagnostics failure. This may indicate a drive\n"); |
| 2395 | ata_dev_printk(dev, KERN_WARNING, |
| 2396 | "fault or invalid emulation. Contact drive vendor for information.\n"); |
| 2397 | } |
| 2398 | } |
| 2399 | |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2400 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2401 | |
| 2402 | err_out_nosup: |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 2403 | if (ata_msg_probe(ap)) |
Tejun Heo | 8857455 | 2006-06-25 20:00:35 +0900 | [diff] [blame] | 2404 | ata_dev_printk(dev, KERN_DEBUG, |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 2405 | "%s: EXIT, err\n", __func__); |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2406 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2407 | } |
| 2408 | |
| 2409 | /** |
Alan Cox | 2e41e8e | 2007-03-08 23:19:19 +0000 | [diff] [blame] | 2410 | * ata_cable_40wire - return 40 wire cable type |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 2411 | * @ap: port |
| 2412 | * |
Alan Cox | 2e41e8e | 2007-03-08 23:19:19 +0000 | [diff] [blame] | 2413 | * Helper method for drivers which want to hardwire 40 wire cable |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 2414 | * detection. |
| 2415 | */ |
| 2416 | |
| 2417 | int ata_cable_40wire(struct ata_port *ap) |
| 2418 | { |
| 2419 | return ATA_CBL_PATA40; |
| 2420 | } |
| 2421 | |
| 2422 | /** |
Alan Cox | 2e41e8e | 2007-03-08 23:19:19 +0000 | [diff] [blame] | 2423 | * ata_cable_80wire - return 80 wire cable type |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 2424 | * @ap: port |
| 2425 | * |
Alan Cox | 2e41e8e | 2007-03-08 23:19:19 +0000 | [diff] [blame] | 2426 | * Helper method for drivers which want to hardwire 80 wire cable |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 2427 | * detection. |
| 2428 | */ |
| 2429 | |
| 2430 | int ata_cable_80wire(struct ata_port *ap) |
| 2431 | { |
| 2432 | return ATA_CBL_PATA80; |
| 2433 | } |
| 2434 | |
| 2435 | /** |
| 2436 | * ata_cable_unknown - return unknown PATA cable. |
| 2437 | * @ap: port |
| 2438 | * |
| 2439 | * Helper method for drivers which have no PATA cable detection. |
| 2440 | */ |
| 2441 | |
| 2442 | int ata_cable_unknown(struct ata_port *ap) |
| 2443 | { |
| 2444 | return ATA_CBL_PATA_UNK; |
| 2445 | } |
| 2446 | |
| 2447 | /** |
Tejun Heo | c88f90c | 2007-11-27 19:43:48 +0900 | [diff] [blame] | 2448 | * ata_cable_ignore - return ignored PATA cable. |
| 2449 | * @ap: port |
| 2450 | * |
| 2451 | * Helper method for drivers which don't use cable type to limit |
| 2452 | * transfer mode. |
| 2453 | */ |
| 2454 | int ata_cable_ignore(struct ata_port *ap) |
| 2455 | { |
| 2456 | return ATA_CBL_PATA_IGN; |
| 2457 | } |
| 2458 | |
| 2459 | /** |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 2460 | * ata_cable_sata - return SATA cable type |
| 2461 | * @ap: port |
| 2462 | * |
| 2463 | * Helper method for drivers which have SATA cables |
| 2464 | */ |
| 2465 | |
| 2466 | int ata_cable_sata(struct ata_port *ap) |
| 2467 | { |
| 2468 | return ATA_CBL_SATA; |
| 2469 | } |
| 2470 | |
| 2471 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2472 | * ata_bus_probe - Reset and probe ATA bus |
| 2473 | * @ap: Bus to probe |
| 2474 | * |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 2475 | * Master ATA bus probing function. Initiates a hardware-dependent |
| 2476 | * bus reset, then attempts to identify any devices found on |
| 2477 | * the bus. |
| 2478 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2479 | * LOCKING: |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 2480 | * PCI/etc. bus probe sem. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2481 | * |
| 2482 | * RETURNS: |
Tejun Heo | 96072e6 | 2006-04-01 01:38:17 +0900 | [diff] [blame] | 2483 | * Zero on success, negative errno otherwise. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2484 | */ |
| 2485 | |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 2486 | int ata_bus_probe(struct ata_port *ap) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2487 | { |
Tejun Heo | 28ca5c5 | 2006-03-01 16:09:36 +0900 | [diff] [blame] | 2488 | unsigned int classes[ATA_MAX_DEVICES]; |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2489 | int tries[ATA_MAX_DEVICES]; |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2490 | int rc; |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 2491 | struct ata_device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2492 | |
Tejun Heo | 28ca5c5 | 2006-03-01 16:09:36 +0900 | [diff] [blame] | 2493 | ata_port_probe(ap); |
| 2494 | |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2495 | ata_link_for_each_dev(dev, &ap->link) |
| 2496 | tries[dev->devno] = ATA_PROBE_MAX_TRIES; |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2497 | |
| 2498 | retry: |
Tejun Heo | cdeab11 | 2007-10-29 16:41:09 +0900 | [diff] [blame] | 2499 | ata_link_for_each_dev(dev, &ap->link) { |
| 2500 | /* If we issue an SRST then an ATA drive (not ATAPI) |
| 2501 | * may change configuration and be in PIO0 timing. If |
| 2502 | * we do a hard reset (or are coming from power on) |
| 2503 | * this is true for ATA or ATAPI. Until we've set a |
| 2504 | * suitable controller mode we should not touch the |
| 2505 | * bus as we may be talking too fast. |
| 2506 | */ |
| 2507 | dev->pio_mode = XFER_PIO_0; |
| 2508 | |
| 2509 | /* If the controller has a pio mode setup function |
| 2510 | * then use it to set the chipset to rights. Don't |
| 2511 | * touch the DMA setup as that will be dealt with when |
| 2512 | * configuring devices. |
| 2513 | */ |
| 2514 | if (ap->ops->set_piomode) |
| 2515 | ap->ops->set_piomode(ap, dev); |
| 2516 | } |
| 2517 | |
Tejun Heo | 2044470 | 2006-03-13 01:57:01 +0900 | [diff] [blame] | 2518 | /* reset and determine device classes */ |
Tejun Heo | 52783c5 | 2006-05-31 18:28:22 +0900 | [diff] [blame] | 2519 | ap->ops->phy_reset(ap); |
Tejun Heo | 2061a47 | 2006-03-12 00:57:39 +0900 | [diff] [blame] | 2520 | |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2521 | ata_link_for_each_dev(dev, &ap->link) { |
Tejun Heo | 52783c5 | 2006-05-31 18:28:22 +0900 | [diff] [blame] | 2522 | if (!(ap->flags & ATA_FLAG_DISABLED) && |
| 2523 | dev->class != ATA_DEV_UNKNOWN) |
| 2524 | classes[dev->devno] = dev->class; |
| 2525 | else |
| 2526 | classes[dev->devno] = ATA_DEV_NONE; |
Tejun Heo | 2044470 | 2006-03-13 01:57:01 +0900 | [diff] [blame] | 2527 | |
Tejun Heo | 52783c5 | 2006-05-31 18:28:22 +0900 | [diff] [blame] | 2528 | dev->class = ATA_DEV_UNKNOWN; |
Tejun Heo | 28ca5c5 | 2006-03-01 16:09:36 +0900 | [diff] [blame] | 2529 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2530 | |
Tejun Heo | 52783c5 | 2006-05-31 18:28:22 +0900 | [diff] [blame] | 2531 | ata_port_probe(ap); |
Tejun Heo | 2044470 | 2006-03-13 01:57:01 +0900 | [diff] [blame] | 2532 | |
Jeff Garzik | f31f0cc | 2007-03-02 17:47:28 -0500 | [diff] [blame] | 2533 | /* read IDENTIFY page and configure devices. We have to do the identify |
| 2534 | specific sequence bass-ackwards so that PDIAG- is released by |
| 2535 | the slave device */ |
| 2536 | |
Bartlomiej Zolnierkiewicz | a4ba7fe | 2008-04-02 10:35:15 +0900 | [diff] [blame] | 2537 | ata_link_for_each_dev_reverse(dev, &ap->link) { |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2538 | if (tries[dev->devno]) |
| 2539 | dev->class = classes[dev->devno]; |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2540 | |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 2541 | if (!ata_dev_enabled(dev)) |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2542 | continue; |
| 2543 | |
Tejun Heo | bff0464 | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 2544 | rc = ata_dev_read_id(dev, &dev->class, ATA_READID_POSTRESET, |
| 2545 | dev->id); |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2546 | if (rc) |
| 2547 | goto fail; |
Jeff Garzik | f31f0cc | 2007-03-02 17:47:28 -0500 | [diff] [blame] | 2548 | } |
| 2549 | |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 2550 | /* Now ask for the cable type as PDIAG- should have been released */ |
| 2551 | if (ap->ops->cable_detect) |
| 2552 | ap->cbl = ap->ops->cable_detect(ap); |
| 2553 | |
Alan Cox | 614fe29 | 2007-08-22 23:22:45 +0100 | [diff] [blame] | 2554 | /* We may have SATA bridge glue hiding here irrespective of the |
| 2555 | reported cable types and sensed types */ |
| 2556 | ata_link_for_each_dev(dev, &ap->link) { |
| 2557 | if (!ata_dev_enabled(dev)) |
| 2558 | continue; |
| 2559 | /* SATA drives indicate we have a bridge. We don't know which |
| 2560 | end of the link the bridge is which is a problem */ |
| 2561 | if (ata_id_is_sata(dev->id)) |
| 2562 | ap->cbl = ATA_CBL_SATA; |
| 2563 | } |
| 2564 | |
Jeff Garzik | f31f0cc | 2007-03-02 17:47:28 -0500 | [diff] [blame] | 2565 | /* After the identify sequence we can now set up the devices. We do |
| 2566 | this in the normal order so that the user doesn't get confused */ |
| 2567 | |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2568 | ata_link_for_each_dev(dev, &ap->link) { |
Jeff Garzik | f31f0cc | 2007-03-02 17:47:28 -0500 | [diff] [blame] | 2569 | if (!ata_dev_enabled(dev)) |
| 2570 | continue; |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2571 | |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2572 | ap->link.eh_context.i.flags |= ATA_EHI_PRINTINFO; |
Tejun Heo | efdaedc | 2006-11-01 18:38:52 +0900 | [diff] [blame] | 2573 | rc = ata_dev_configure(dev); |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2574 | ap->link.eh_context.i.flags &= ~ATA_EHI_PRINTINFO; |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2575 | if (rc) |
| 2576 | goto fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2577 | } |
| 2578 | |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 2579 | /* configure transfer mode */ |
Tejun Heo | 0260731 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2580 | rc = ata_set_mode(&ap->link, &dev); |
Tejun Heo | 4ae72a1 | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 2581 | if (rc) |
Tejun Heo | 51713d3 | 2006-04-11 22:26:29 +0900 | [diff] [blame] | 2582 | goto fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2583 | |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2584 | ata_link_for_each_dev(dev, &ap->link) |
| 2585 | if (ata_dev_enabled(dev)) |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 2586 | return 0; |
Alan Cox | e35a9e0 | 2006-03-27 18:46:37 +0100 | [diff] [blame] | 2587 | |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 2588 | /* no device present, disable port */ |
| 2589 | ata_port_disable(ap); |
Tejun Heo | 96072e6 | 2006-04-01 01:38:17 +0900 | [diff] [blame] | 2590 | return -ENODEV; |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2591 | |
| 2592 | fail: |
Tejun Heo | 4ae72a1 | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 2593 | tries[dev->devno]--; |
| 2594 | |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2595 | switch (rc) { |
| 2596 | case -EINVAL: |
Tejun Heo | 4ae72a1 | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 2597 | /* eeek, something went very wrong, give up */ |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2598 | tries[dev->devno] = 0; |
| 2599 | break; |
Tejun Heo | 4ae72a1 | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 2600 | |
| 2601 | case -ENODEV: |
| 2602 | /* give it just one more chance */ |
| 2603 | tries[dev->devno] = min(tries[dev->devno], 1); |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2604 | case -EIO: |
Tejun Heo | 4ae72a1 | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 2605 | if (tries[dev->devno] == 1) { |
| 2606 | /* This is the last chance, better to slow |
| 2607 | * down than lose it. |
| 2608 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2609 | sata_down_spd_limit(&ap->link); |
Tejun Heo | 4ae72a1 | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 2610 | ata_down_xfermask_limit(dev, ATA_DNXFER_PIO); |
| 2611 | } |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2612 | } |
| 2613 | |
Tejun Heo | 4ae72a1 | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 2614 | if (!tries[dev->devno]) |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 2615 | ata_dev_disable(dev); |
Tejun Heo | ec57375 | 2006-04-11 22:26:29 +0900 | [diff] [blame] | 2616 | |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2617 | goto retry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2618 | } |
| 2619 | |
| 2620 | /** |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 2621 | * ata_port_probe - Mark port as enabled |
| 2622 | * @ap: Port for which we indicate enablement |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2623 | * |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 2624 | * Modify @ap data structure such that the system |
| 2625 | * thinks that the entire port is enabled. |
| 2626 | * |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2627 | * LOCKING: host lock, or some other form of |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 2628 | * serialization. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2629 | */ |
| 2630 | |
| 2631 | void ata_port_probe(struct ata_port *ap) |
| 2632 | { |
Tejun Heo | 198e0fe | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 2633 | ap->flags &= ~ATA_FLAG_DISABLED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2634 | } |
| 2635 | |
| 2636 | /** |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2637 | * sata_print_link_status - Print SATA link status |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2638 | * @link: SATA link to printk link status about |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2639 | * |
| 2640 | * This function prints link speed and status of a SATA link. |
| 2641 | * |
| 2642 | * LOCKING: |
| 2643 | * None. |
| 2644 | */ |
Adrian Bunk | 6bdb4fc | 2008-04-21 11:51:11 +0300 | [diff] [blame] | 2645 | static void sata_print_link_status(struct ata_link *link) |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2646 | { |
Tejun Heo | 6d5f973 | 2006-04-03 00:09:41 +0900 | [diff] [blame] | 2647 | u32 sstatus, scontrol, tmp; |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2648 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2649 | if (sata_scr_read(link, SCR_STATUS, &sstatus)) |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2650 | return; |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2651 | sata_scr_read(link, SCR_CONTROL, &scontrol); |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2652 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2653 | if (ata_link_online(link)) { |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2654 | tmp = (sstatus >> 4) & 0xf; |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2655 | ata_link_printk(link, KERN_INFO, |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 2656 | "SATA link up %s (SStatus %X SControl %X)\n", |
| 2657 | sata_spd_string(tmp), sstatus, scontrol); |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2658 | } else { |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2659 | ata_link_printk(link, KERN_INFO, |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 2660 | "SATA link down (SStatus %X SControl %X)\n", |
| 2661 | sstatus, scontrol); |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2662 | } |
| 2663 | } |
| 2664 | |
| 2665 | /** |
Alan Cox | ebdfca6 | 2006-03-23 15:38:34 +0000 | [diff] [blame] | 2666 | * ata_dev_pair - return other device on cable |
Alan Cox | ebdfca6 | 2006-03-23 15:38:34 +0000 | [diff] [blame] | 2667 | * @adev: device |
| 2668 | * |
| 2669 | * Obtain the other device on the same cable, or if none is |
| 2670 | * present NULL is returned |
| 2671 | */ |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 2672 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 2673 | struct ata_device *ata_dev_pair(struct ata_device *adev) |
Alan Cox | ebdfca6 | 2006-03-23 15:38:34 +0000 | [diff] [blame] | 2674 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2675 | struct ata_link *link = adev->link; |
| 2676 | struct ata_device *pair = &link->device[1 - adev->devno]; |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 2677 | if (!ata_dev_enabled(pair)) |
Alan Cox | ebdfca6 | 2006-03-23 15:38:34 +0000 | [diff] [blame] | 2678 | return NULL; |
| 2679 | return pair; |
| 2680 | } |
| 2681 | |
| 2682 | /** |
Jeff Garzik | 780a87f | 2005-05-30 15:41:05 -0400 | [diff] [blame] | 2683 | * ata_port_disable - Disable port. |
| 2684 | * @ap: Port to be disabled. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2685 | * |
Jeff Garzik | 780a87f | 2005-05-30 15:41:05 -0400 | [diff] [blame] | 2686 | * Modify @ap data structure such that the system |
| 2687 | * thinks that the entire port is disabled, and should |
| 2688 | * never attempt to probe or communicate with devices |
| 2689 | * on this port. |
| 2690 | * |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2691 | * LOCKING: host lock, or some other form of |
Jeff Garzik | 780a87f | 2005-05-30 15:41:05 -0400 | [diff] [blame] | 2692 | * serialization. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2693 | */ |
| 2694 | |
| 2695 | void ata_port_disable(struct ata_port *ap) |
| 2696 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2697 | ap->link.device[0].class = ATA_DEV_NONE; |
| 2698 | ap->link.device[1].class = ATA_DEV_NONE; |
Tejun Heo | 198e0fe | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 2699 | ap->flags |= ATA_FLAG_DISABLED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2700 | } |
| 2701 | |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2702 | /** |
Tejun Heo | 3c567b7 | 2006-05-15 20:57:23 +0900 | [diff] [blame] | 2703 | * sata_down_spd_limit - adjust SATA spd limit downward |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2704 | * @link: Link to adjust SATA spd limit for |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2705 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2706 | * Adjust SATA spd limit of @link downward. Note that this |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2707 | * function only adjusts the limit. The change must be applied |
Tejun Heo | 3c567b7 | 2006-05-15 20:57:23 +0900 | [diff] [blame] | 2708 | * using sata_set_spd(). |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2709 | * |
| 2710 | * LOCKING: |
| 2711 | * Inherited from caller. |
| 2712 | * |
| 2713 | * RETURNS: |
| 2714 | * 0 on success, negative errno on failure |
| 2715 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2716 | int sata_down_spd_limit(struct ata_link *link) |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2717 | { |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 2718 | u32 sstatus, spd, mask; |
| 2719 | int rc, highbit; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2720 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2721 | if (!sata_scr_valid(link)) |
Tejun Heo | 008a789 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2722 | return -EOPNOTSUPP; |
| 2723 | |
| 2724 | /* If SCR can be read, use it to determine the current SPD. |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2725 | * If not, use cached value in link->sata_spd. |
Tejun Heo | 008a789 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2726 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2727 | rc = sata_scr_read(link, SCR_STATUS, &sstatus); |
Tejun Heo | 008a789 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2728 | if (rc == 0) |
| 2729 | spd = (sstatus >> 4) & 0xf; |
| 2730 | else |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2731 | spd = link->sata_spd; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2732 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2733 | mask = link->sata_spd_limit; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2734 | if (mask <= 1) |
| 2735 | return -EINVAL; |
Tejun Heo | 008a789 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2736 | |
| 2737 | /* unconditionally mask off the highest bit */ |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2738 | highbit = fls(mask) - 1; |
| 2739 | mask &= ~(1 << highbit); |
| 2740 | |
Tejun Heo | 008a789 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2741 | /* Mask off all speeds higher than or equal to the current |
| 2742 | * one. Force 1.5Gbps if current SPD is not available. |
| 2743 | */ |
| 2744 | if (spd > 1) |
| 2745 | mask &= (1 << (spd - 1)) - 1; |
| 2746 | else |
| 2747 | mask &= 1; |
| 2748 | |
| 2749 | /* were we already at the bottom? */ |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2750 | if (!mask) |
| 2751 | return -EINVAL; |
| 2752 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2753 | link->sata_spd_limit = mask; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2754 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2755 | ata_link_printk(link, KERN_WARNING, "limiting SATA link speed to %s\n", |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 2756 | sata_spd_string(fls(mask))); |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2757 | |
| 2758 | return 0; |
| 2759 | } |
| 2760 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2761 | static int __sata_set_spd_needed(struct ata_link *link, u32 *scontrol) |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2762 | { |
Tejun Heo | 5270222 | 2007-10-31 10:17:07 +0900 | [diff] [blame] | 2763 | struct ata_link *host_link = &link->ap->link; |
| 2764 | u32 limit, target, spd; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2765 | |
Tejun Heo | 5270222 | 2007-10-31 10:17:07 +0900 | [diff] [blame] | 2766 | limit = link->sata_spd_limit; |
| 2767 | |
| 2768 | /* Don't configure downstream link faster than upstream link. |
| 2769 | * It doesn't speed up anything and some PMPs choke on such |
| 2770 | * configuration. |
| 2771 | */ |
| 2772 | if (!ata_is_host_link(link) && host_link->sata_spd) |
| 2773 | limit &= (1 << host_link->sata_spd) - 1; |
| 2774 | |
| 2775 | if (limit == UINT_MAX) |
| 2776 | target = 0; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2777 | else |
Tejun Heo | 5270222 | 2007-10-31 10:17:07 +0900 | [diff] [blame] | 2778 | target = fls(limit); |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2779 | |
| 2780 | spd = (*scontrol >> 4) & 0xf; |
Tejun Heo | 5270222 | 2007-10-31 10:17:07 +0900 | [diff] [blame] | 2781 | *scontrol = (*scontrol & ~0xf0) | ((target & 0xf) << 4); |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2782 | |
Tejun Heo | 5270222 | 2007-10-31 10:17:07 +0900 | [diff] [blame] | 2783 | return spd != target; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2784 | } |
| 2785 | |
| 2786 | /** |
Tejun Heo | 3c567b7 | 2006-05-15 20:57:23 +0900 | [diff] [blame] | 2787 | * sata_set_spd_needed - is SATA spd configuration needed |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2788 | * @link: Link in question |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2789 | * |
| 2790 | * Test whether the spd limit in SControl matches |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2791 | * @link->sata_spd_limit. This function is used to determine |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2792 | * whether hardreset is necessary to apply SATA spd |
| 2793 | * configuration. |
| 2794 | * |
| 2795 | * LOCKING: |
| 2796 | * Inherited from caller. |
| 2797 | * |
| 2798 | * RETURNS: |
| 2799 | * 1 if SATA spd configuration is needed, 0 otherwise. |
| 2800 | */ |
Adrian Bunk | 1dc55e8 | 2008-04-21 11:51:17 +0300 | [diff] [blame] | 2801 | static int sata_set_spd_needed(struct ata_link *link) |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2802 | { |
| 2803 | u32 scontrol; |
| 2804 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2805 | if (sata_scr_read(link, SCR_CONTROL, &scontrol)) |
Tejun Heo | db64bcf | 2007-10-31 10:17:06 +0900 | [diff] [blame] | 2806 | return 1; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2807 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2808 | return __sata_set_spd_needed(link, &scontrol); |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2809 | } |
| 2810 | |
| 2811 | /** |
Tejun Heo | 3c567b7 | 2006-05-15 20:57:23 +0900 | [diff] [blame] | 2812 | * sata_set_spd - set SATA spd according to spd limit |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2813 | * @link: Link to set SATA spd for |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2814 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2815 | * Set SATA spd of @link according to sata_spd_limit. |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2816 | * |
| 2817 | * LOCKING: |
| 2818 | * Inherited from caller. |
| 2819 | * |
| 2820 | * RETURNS: |
| 2821 | * 0 if spd doesn't need to be changed, 1 if spd has been |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 2822 | * changed. Negative errno if SCR registers are inaccessible. |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2823 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2824 | int sata_set_spd(struct ata_link *link) |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2825 | { |
| 2826 | u32 scontrol; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 2827 | int rc; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2828 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2829 | if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol))) |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 2830 | return rc; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2831 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2832 | if (!__sata_set_spd_needed(link, &scontrol)) |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2833 | return 0; |
| 2834 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2835 | if ((rc = sata_scr_write(link, SCR_CONTROL, scontrol))) |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 2836 | return rc; |
| 2837 | |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2838 | return 1; |
| 2839 | } |
| 2840 | |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2841 | /* |
| 2842 | * This mode timing computation functionality is ported over from |
| 2843 | * drivers/ide/ide-timing.h and was originally written by Vojtech Pavlik |
| 2844 | */ |
| 2845 | /* |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 2846 | * PIO 0-4, MWDMA 0-2 and UDMA 0-6 timings (in nanoseconds). |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2847 | * These were taken from ATA/ATAPI-6 standard, rev 0a, except |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 2848 | * for UDMA6, which is currently supported only by Maxtor drives. |
| 2849 | * |
| 2850 | * For PIO 5/6 MWDMA 3/4 see the CFA specification 3.0. |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2851 | */ |
| 2852 | |
| 2853 | static const struct ata_timing ata_timing[] = { |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 2854 | /* { XFER_PIO_SLOW, 120, 290, 240, 960, 290, 240, 960, 0 }, */ |
| 2855 | { XFER_PIO_0, 70, 290, 240, 600, 165, 150, 600, 0 }, |
| 2856 | { XFER_PIO_1, 50, 290, 93, 383, 125, 100, 383, 0 }, |
| 2857 | { XFER_PIO_2, 30, 290, 40, 330, 100, 90, 240, 0 }, |
| 2858 | { XFER_PIO_3, 30, 80, 70, 180, 80, 70, 180, 0 }, |
| 2859 | { XFER_PIO_4, 25, 70, 25, 120, 70, 25, 120, 0 }, |
| 2860 | { XFER_PIO_5, 15, 65, 25, 100, 65, 25, 100, 0 }, |
| 2861 | { XFER_PIO_6, 10, 55, 20, 80, 55, 20, 80, 0 }, |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2862 | |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 2863 | { XFER_SW_DMA_0, 120, 0, 0, 0, 480, 480, 960, 0 }, |
| 2864 | { XFER_SW_DMA_1, 90, 0, 0, 0, 240, 240, 480, 0 }, |
| 2865 | { XFER_SW_DMA_2, 60, 0, 0, 0, 120, 120, 240, 0 }, |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2866 | |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 2867 | { XFER_MW_DMA_0, 60, 0, 0, 0, 215, 215, 480, 0 }, |
| 2868 | { XFER_MW_DMA_1, 45, 0, 0, 0, 80, 50, 150, 0 }, |
| 2869 | { XFER_MW_DMA_2, 25, 0, 0, 0, 70, 25, 120, 0 }, |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 2870 | { XFER_MW_DMA_3, 25, 0, 0, 0, 65, 25, 100, 0 }, |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 2871 | { XFER_MW_DMA_4, 25, 0, 0, 0, 55, 20, 80, 0 }, |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2872 | |
| 2873 | /* { XFER_UDMA_SLOW, 0, 0, 0, 0, 0, 0, 0, 150 }, */ |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 2874 | { XFER_UDMA_0, 0, 0, 0, 0, 0, 0, 0, 120 }, |
| 2875 | { XFER_UDMA_1, 0, 0, 0, 0, 0, 0, 0, 80 }, |
| 2876 | { XFER_UDMA_2, 0, 0, 0, 0, 0, 0, 0, 60 }, |
| 2877 | { XFER_UDMA_3, 0, 0, 0, 0, 0, 0, 0, 45 }, |
| 2878 | { XFER_UDMA_4, 0, 0, 0, 0, 0, 0, 0, 30 }, |
| 2879 | { XFER_UDMA_5, 0, 0, 0, 0, 0, 0, 0, 20 }, |
| 2880 | { XFER_UDMA_6, 0, 0, 0, 0, 0, 0, 0, 15 }, |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2881 | |
| 2882 | { 0xFF } |
| 2883 | }; |
| 2884 | |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 2885 | #define ENOUGH(v, unit) (((v)-1)/(unit)+1) |
| 2886 | #define EZ(v, unit) ((v)?ENOUGH(v, unit):0) |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2887 | |
| 2888 | static void ata_timing_quantize(const struct ata_timing *t, struct ata_timing *q, int T, int UT) |
| 2889 | { |
| 2890 | q->setup = EZ(t->setup * 1000, T); |
| 2891 | q->act8b = EZ(t->act8b * 1000, T); |
| 2892 | q->rec8b = EZ(t->rec8b * 1000, T); |
| 2893 | q->cyc8b = EZ(t->cyc8b * 1000, T); |
| 2894 | q->active = EZ(t->active * 1000, T); |
| 2895 | q->recover = EZ(t->recover * 1000, T); |
| 2896 | q->cycle = EZ(t->cycle * 1000, T); |
| 2897 | q->udma = EZ(t->udma * 1000, UT); |
| 2898 | } |
| 2899 | |
| 2900 | void ata_timing_merge(const struct ata_timing *a, const struct ata_timing *b, |
| 2901 | struct ata_timing *m, unsigned int what) |
| 2902 | { |
| 2903 | if (what & ATA_TIMING_SETUP ) m->setup = max(a->setup, b->setup); |
| 2904 | if (what & ATA_TIMING_ACT8B ) m->act8b = max(a->act8b, b->act8b); |
| 2905 | if (what & ATA_TIMING_REC8B ) m->rec8b = max(a->rec8b, b->rec8b); |
| 2906 | if (what & ATA_TIMING_CYC8B ) m->cyc8b = max(a->cyc8b, b->cyc8b); |
| 2907 | if (what & ATA_TIMING_ACTIVE ) m->active = max(a->active, b->active); |
| 2908 | if (what & ATA_TIMING_RECOVER) m->recover = max(a->recover, b->recover); |
| 2909 | if (what & ATA_TIMING_CYCLE ) m->cycle = max(a->cycle, b->cycle); |
| 2910 | if (what & ATA_TIMING_UDMA ) m->udma = max(a->udma, b->udma); |
| 2911 | } |
| 2912 | |
Tejun Heo | 6357357 | 2007-11-27 19:43:39 +0900 | [diff] [blame] | 2913 | const struct ata_timing *ata_timing_find_mode(u8 xfer_mode) |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2914 | { |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 2915 | const struct ata_timing *t = ata_timing; |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2916 | |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 2917 | while (xfer_mode > t->mode) |
| 2918 | t++; |
| 2919 | |
| 2920 | if (xfer_mode == t->mode) |
| 2921 | return t; |
| 2922 | return NULL; |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2923 | } |
| 2924 | |
| 2925 | int ata_timing_compute(struct ata_device *adev, unsigned short speed, |
| 2926 | struct ata_timing *t, int T, int UT) |
| 2927 | { |
| 2928 | const struct ata_timing *s; |
| 2929 | struct ata_timing p; |
| 2930 | |
| 2931 | /* |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 2932 | * Find the mode. |
Albert Lee | 75b1f2f | 2005-11-16 17:06:18 +0800 | [diff] [blame] | 2933 | */ |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2934 | |
| 2935 | if (!(s = ata_timing_find_mode(speed))) |
| 2936 | return -EINVAL; |
| 2937 | |
Albert Lee | 75b1f2f | 2005-11-16 17:06:18 +0800 | [diff] [blame] | 2938 | memcpy(t, s, sizeof(*s)); |
| 2939 | |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2940 | /* |
| 2941 | * If the drive is an EIDE drive, it can tell us it needs extended |
| 2942 | * PIO/MW_DMA cycle timing. |
| 2943 | */ |
| 2944 | |
| 2945 | if (adev->id[ATA_ID_FIELD_VALID] & 2) { /* EIDE drive */ |
| 2946 | memset(&p, 0, sizeof(p)); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 2947 | if (speed >= XFER_PIO_0 && speed <= XFER_SW_DMA_0) { |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2948 | if (speed <= XFER_PIO_2) p.cycle = p.cyc8b = adev->id[ATA_ID_EIDE_PIO]; |
| 2949 | else p.cycle = p.cyc8b = adev->id[ATA_ID_EIDE_PIO_IORDY]; |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 2950 | } else if (speed >= XFER_MW_DMA_0 && speed <= XFER_MW_DMA_2) { |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2951 | p.cycle = adev->id[ATA_ID_EIDE_DMA_MIN]; |
| 2952 | } |
| 2953 | ata_timing_merge(&p, t, t, ATA_TIMING_CYCLE | ATA_TIMING_CYC8B); |
| 2954 | } |
| 2955 | |
| 2956 | /* |
| 2957 | * Convert the timing to bus clock counts. |
| 2958 | */ |
| 2959 | |
Albert Lee | 75b1f2f | 2005-11-16 17:06:18 +0800 | [diff] [blame] | 2960 | ata_timing_quantize(t, t, T, UT); |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2961 | |
| 2962 | /* |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 2963 | * Even in DMA/UDMA modes we still use PIO access for IDENTIFY, |
| 2964 | * S.M.A.R.T * and some other commands. We have to ensure that the |
| 2965 | * DMA cycle timing is slower/equal than the fastest PIO timing. |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2966 | */ |
| 2967 | |
Alan | fd3367af | 2006-12-07 12:41:18 +0000 | [diff] [blame] | 2968 | if (speed > XFER_PIO_6) { |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2969 | ata_timing_compute(adev, adev->pio_mode, &p, T, UT); |
| 2970 | ata_timing_merge(&p, t, t, ATA_TIMING_ALL); |
| 2971 | } |
| 2972 | |
| 2973 | /* |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 2974 | * Lengthen active & recovery time so that cycle time is correct. |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2975 | */ |
| 2976 | |
| 2977 | if (t->act8b + t->rec8b < t->cyc8b) { |
| 2978 | t->act8b += (t->cyc8b - (t->act8b + t->rec8b)) / 2; |
| 2979 | t->rec8b = t->cyc8b - t->act8b; |
| 2980 | } |
| 2981 | |
| 2982 | if (t->active + t->recover < t->cycle) { |
| 2983 | t->active += (t->cycle - (t->active + t->recover)) / 2; |
| 2984 | t->recover = t->cycle - t->active; |
| 2985 | } |
Jeff Garzik | a617c09 | 2007-05-21 20:14:23 -0400 | [diff] [blame] | 2986 | |
Alan Cox | 4f701d1 | 2007-04-23 11:55:36 +0100 | [diff] [blame] | 2987 | /* In a few cases quantisation may produce enough errors to |
| 2988 | leave t->cycle too low for the sum of active and recovery |
| 2989 | if so we must correct this */ |
| 2990 | if (t->active + t->recover > t->cycle) |
| 2991 | t->cycle = t->active + t->recover; |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2992 | |
| 2993 | return 0; |
| 2994 | } |
| 2995 | |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2996 | /** |
Tejun Heo | a0f79b9 | 2007-12-18 16:33:05 +0900 | [diff] [blame] | 2997 | * ata_timing_cycle2mode - find xfer mode for the specified cycle duration |
| 2998 | * @xfer_shift: ATA_SHIFT_* value for transfer type to examine. |
| 2999 | * @cycle: cycle duration in ns |
| 3000 | * |
| 3001 | * Return matching xfer mode for @cycle. The returned mode is of |
| 3002 | * the transfer type specified by @xfer_shift. If @cycle is too |
| 3003 | * slow for @xfer_shift, 0xff is returned. If @cycle is faster |
| 3004 | * than the fastest known mode, the fasted mode is returned. |
| 3005 | * |
| 3006 | * LOCKING: |
| 3007 | * None. |
| 3008 | * |
| 3009 | * RETURNS: |
| 3010 | * Matching xfer_mode, 0xff if no match found. |
| 3011 | */ |
| 3012 | u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle) |
| 3013 | { |
| 3014 | u8 base_mode = 0xff, last_mode = 0xff; |
| 3015 | const struct ata_xfer_ent *ent; |
| 3016 | const struct ata_timing *t; |
| 3017 | |
| 3018 | for (ent = ata_xfer_tbl; ent->shift >= 0; ent++) |
| 3019 | if (ent->shift == xfer_shift) |
| 3020 | base_mode = ent->base; |
| 3021 | |
| 3022 | for (t = ata_timing_find_mode(base_mode); |
| 3023 | t && ata_xfer_mode2shift(t->mode) == xfer_shift; t++) { |
| 3024 | unsigned short this_cycle; |
| 3025 | |
| 3026 | switch (xfer_shift) { |
| 3027 | case ATA_SHIFT_PIO: |
| 3028 | case ATA_SHIFT_MWDMA: |
| 3029 | this_cycle = t->cycle; |
| 3030 | break; |
| 3031 | case ATA_SHIFT_UDMA: |
| 3032 | this_cycle = t->udma; |
| 3033 | break; |
| 3034 | default: |
| 3035 | return 0xff; |
| 3036 | } |
| 3037 | |
| 3038 | if (cycle > this_cycle) |
| 3039 | break; |
| 3040 | |
| 3041 | last_mode = t->mode; |
| 3042 | } |
| 3043 | |
| 3044 | return last_mode; |
| 3045 | } |
| 3046 | |
| 3047 | /** |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3048 | * ata_down_xfermask_limit - adjust dev xfer masks downward |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3049 | * @dev: Device to adjust xfer masks |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3050 | * @sel: ATA_DNXFER_* selector |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3051 | * |
| 3052 | * Adjust xfer masks of @dev downward. Note that this function |
| 3053 | * does not apply the change. Invoking ata_set_mode() afterwards |
| 3054 | * will apply the limit. |
| 3055 | * |
| 3056 | * LOCKING: |
| 3057 | * Inherited from caller. |
| 3058 | * |
| 3059 | * RETURNS: |
| 3060 | * 0 on success, negative errno on failure |
| 3061 | */ |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3062 | int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel) |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3063 | { |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3064 | char buf[32]; |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 3065 | unsigned long orig_mask, xfer_mask; |
| 3066 | unsigned long pio_mask, mwdma_mask, udma_mask; |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3067 | int quiet, highbit; |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3068 | |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3069 | quiet = !!(sel & ATA_DNXFER_QUIET); |
| 3070 | sel &= ~ATA_DNXFER_QUIET; |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3071 | |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3072 | xfer_mask = orig_mask = ata_pack_xfermask(dev->pio_mask, |
| 3073 | dev->mwdma_mask, |
| 3074 | dev->udma_mask); |
| 3075 | ata_unpack_xfermask(xfer_mask, &pio_mask, &mwdma_mask, &udma_mask); |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3076 | |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3077 | switch (sel) { |
| 3078 | case ATA_DNXFER_PIO: |
| 3079 | highbit = fls(pio_mask) - 1; |
| 3080 | pio_mask &= ~(1 << highbit); |
| 3081 | break; |
| 3082 | |
| 3083 | case ATA_DNXFER_DMA: |
| 3084 | if (udma_mask) { |
| 3085 | highbit = fls(udma_mask) - 1; |
| 3086 | udma_mask &= ~(1 << highbit); |
| 3087 | if (!udma_mask) |
| 3088 | return -ENOENT; |
| 3089 | } else if (mwdma_mask) { |
| 3090 | highbit = fls(mwdma_mask) - 1; |
| 3091 | mwdma_mask &= ~(1 << highbit); |
| 3092 | if (!mwdma_mask) |
| 3093 | return -ENOENT; |
| 3094 | } |
| 3095 | break; |
| 3096 | |
| 3097 | case ATA_DNXFER_40C: |
| 3098 | udma_mask &= ATA_UDMA_MASK_40C; |
| 3099 | break; |
| 3100 | |
| 3101 | case ATA_DNXFER_FORCE_PIO0: |
| 3102 | pio_mask &= 1; |
| 3103 | case ATA_DNXFER_FORCE_PIO: |
| 3104 | mwdma_mask = 0; |
| 3105 | udma_mask = 0; |
| 3106 | break; |
| 3107 | |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3108 | default: |
| 3109 | BUG(); |
| 3110 | } |
| 3111 | |
| 3112 | xfer_mask &= ata_pack_xfermask(pio_mask, mwdma_mask, udma_mask); |
| 3113 | |
| 3114 | if (!(xfer_mask & ATA_MASK_PIO) || xfer_mask == orig_mask) |
| 3115 | return -ENOENT; |
| 3116 | |
| 3117 | if (!quiet) { |
| 3118 | if (xfer_mask & (ATA_MASK_MWDMA | ATA_MASK_UDMA)) |
| 3119 | snprintf(buf, sizeof(buf), "%s:%s", |
| 3120 | ata_mode_string(xfer_mask), |
| 3121 | ata_mode_string(xfer_mask & ATA_MASK_PIO)); |
| 3122 | else |
| 3123 | snprintf(buf, sizeof(buf), "%s", |
| 3124 | ata_mode_string(xfer_mask)); |
| 3125 | |
| 3126 | ata_dev_printk(dev, KERN_WARNING, |
| 3127 | "limiting speed to %s\n", buf); |
| 3128 | } |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3129 | |
| 3130 | ata_unpack_xfermask(xfer_mask, &dev->pio_mask, &dev->mwdma_mask, |
| 3131 | &dev->udma_mask); |
| 3132 | |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3133 | return 0; |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3134 | } |
| 3135 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 3136 | static int ata_dev_set_mode(struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3137 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 3138 | struct ata_eh_context *ehc = &dev->link->eh_context; |
Tejun Heo | 4055dee | 2008-02-07 10:34:08 +0900 | [diff] [blame] | 3139 | const char *dev_err_whine = ""; |
| 3140 | int ign_dev_err = 0; |
Tejun Heo | 83206a2 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 3141 | unsigned int err_mask; |
| 3142 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3143 | |
Tejun Heo | e838460 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 3144 | dev->flags &= ~ATA_DFLAG_PIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3145 | if (dev->xfer_shift == ATA_SHIFT_PIO) |
| 3146 | dev->flags |= ATA_DFLAG_PIO; |
| 3147 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 3148 | err_mask = ata_dev_set_xfermode(dev); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3149 | |
Tejun Heo | 4055dee | 2008-02-07 10:34:08 +0900 | [diff] [blame] | 3150 | if (err_mask & ~AC_ERR_DEV) |
| 3151 | goto fail; |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3152 | |
Tejun Heo | 4055dee | 2008-02-07 10:34:08 +0900 | [diff] [blame] | 3153 | /* revalidate */ |
Tejun Heo | baa1e78 | 2006-11-01 18:39:27 +0900 | [diff] [blame] | 3154 | ehc->i.flags |= ATA_EHI_POST_SETMODE; |
Tejun Heo | 422c9da | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 3155 | rc = ata_dev_revalidate(dev, ATA_DEV_UNKNOWN, 0); |
Tejun Heo | baa1e78 | 2006-11-01 18:39:27 +0900 | [diff] [blame] | 3156 | ehc->i.flags &= ~ATA_EHI_POST_SETMODE; |
Tejun Heo | 5eb45c0 | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 3157 | if (rc) |
Tejun Heo | 83206a2 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 3158 | return rc; |
Tejun Heo | 48a8a14 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3159 | |
Alan Cox | b93fda1 | 2008-04-08 16:36:44 +0100 | [diff] [blame] | 3160 | if (dev->xfer_shift == ATA_SHIFT_PIO) { |
| 3161 | /* Old CFA may refuse this command, which is just fine */ |
| 3162 | if (ata_id_is_cfa(dev->id)) |
| 3163 | ign_dev_err = 1; |
| 3164 | /* Catch several broken garbage emulations plus some pre |
| 3165 | ATA devices */ |
| 3166 | if (ata_id_major_version(dev->id) == 0 && |
| 3167 | dev->pio_mode <= XFER_PIO_2) |
| 3168 | ign_dev_err = 1; |
| 3169 | /* Some very old devices and some bad newer ones fail |
| 3170 | any kind of SET_XFERMODE request but support PIO0-2 |
| 3171 | timings and no IORDY */ |
| 3172 | if (!ata_id_has_iordy(dev->id) && dev->pio_mode <= XFER_PIO_2) |
| 3173 | ign_dev_err = 1; |
| 3174 | } |
Tejun Heo | 4055dee | 2008-02-07 10:34:08 +0900 | [diff] [blame] | 3175 | /* Early MWDMA devices do DMA but don't allow DMA mode setting. |
| 3176 | Don't fail an MWDMA0 set IFF the device indicates it is in MWDMA0 */ |
| 3177 | if (dev->xfer_shift == ATA_SHIFT_MWDMA && |
| 3178 | dev->dma_mode == XFER_MW_DMA_0 && |
| 3179 | (dev->id[63] >> 8) & 1) |
| 3180 | ign_dev_err = 1; |
| 3181 | |
| 3182 | /* if the device is actually configured correctly, ignore dev err */ |
| 3183 | if (dev->xfer_mode == ata_xfer_mask2mode(ata_id_xfermask(dev->id))) |
| 3184 | ign_dev_err = 1; |
| 3185 | |
| 3186 | if (err_mask & AC_ERR_DEV) { |
| 3187 | if (!ign_dev_err) |
| 3188 | goto fail; |
| 3189 | else |
| 3190 | dev_err_whine = " (device error ignored)"; |
| 3191 | } |
| 3192 | |
Tejun Heo | 23e71c3 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 3193 | DPRINTK("xfer_shift=%u, xfer_mode=0x%x\n", |
| 3194 | dev->xfer_shift, (int)dev->xfer_mode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3195 | |
Tejun Heo | 4055dee | 2008-02-07 10:34:08 +0900 | [diff] [blame] | 3196 | ata_dev_printk(dev, KERN_INFO, "configured for %s%s\n", |
| 3197 | ata_mode_string(ata_xfer_mode2mask(dev->xfer_mode)), |
| 3198 | dev_err_whine); |
| 3199 | |
Tejun Heo | 83206a2 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 3200 | return 0; |
Tejun Heo | 4055dee | 2008-02-07 10:34:08 +0900 | [diff] [blame] | 3201 | |
| 3202 | fail: |
| 3203 | ata_dev_printk(dev, KERN_ERR, "failed to set xfermode " |
| 3204 | "(err_mask=0x%x)\n", err_mask); |
| 3205 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3206 | } |
| 3207 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3208 | /** |
Alan | 0435182 | 2007-03-06 02:37:52 -0800 | [diff] [blame] | 3209 | * ata_do_set_mode - Program timings and issue SET FEATURES - XFER |
Tejun Heo | 0260731 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3210 | * @link: link on which timings will be programmed |
Joe Perches | 1967b7f | 2008-02-03 17:08:11 +0200 | [diff] [blame] | 3211 | * @r_failed_dev: out parameter for failed device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3212 | * |
Alan | 0435182 | 2007-03-06 02:37:52 -0800 | [diff] [blame] | 3213 | * Standard implementation of the function used to tune and set |
| 3214 | * ATA device disk transfer mode (PIO3, UDMA6, etc.). If |
| 3215 | * ata_dev_set_mode() fails, pointer to the failing device is |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3216 | * returned in @r_failed_dev. |
Jeff Garzik | 780a87f | 2005-05-30 15:41:05 -0400 | [diff] [blame] | 3217 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3218 | * LOCKING: |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 3219 | * PCI/etc. bus probe sem. |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3220 | * |
| 3221 | * RETURNS: |
| 3222 | * 0 on success, negative errno otherwise |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3223 | */ |
Alan | 0435182 | 2007-03-06 02:37:52 -0800 | [diff] [blame] | 3224 | |
Tejun Heo | 0260731 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3225 | int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3226 | { |
Tejun Heo | 0260731 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3227 | struct ata_port *ap = link->ap; |
Tejun Heo | e8e0619 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3228 | struct ata_device *dev; |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3229 | int rc = 0, used_dma = 0, found = 0; |
Tejun Heo | 3adcebb | 2006-05-15 20:57:37 +0900 | [diff] [blame] | 3230 | |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 3231 | /* step 1: calculate xfer_mask */ |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3232 | ata_link_for_each_dev(dev, link) { |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 3233 | unsigned long pio_mask, dma_mask; |
Alan Cox | b3a7060 | 2007-10-02 12:38:26 -0400 | [diff] [blame] | 3234 | unsigned int mode_mask; |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 3235 | |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3236 | if (!ata_dev_enabled(dev)) |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 3237 | continue; |
| 3238 | |
Alan Cox | b3a7060 | 2007-10-02 12:38:26 -0400 | [diff] [blame] | 3239 | mode_mask = ATA_DMA_MASK_ATA; |
| 3240 | if (dev->class == ATA_DEV_ATAPI) |
| 3241 | mode_mask = ATA_DMA_MASK_ATAPI; |
| 3242 | else if (ata_id_is_cfa(dev->id)) |
| 3243 | mode_mask = ATA_DMA_MASK_CFA; |
| 3244 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 3245 | ata_dev_xfermask(dev); |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 3246 | ata_force_xfermask(dev); |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 3247 | |
Tejun Heo | acf356b | 2006-03-24 14:07:50 +0900 | [diff] [blame] | 3248 | pio_mask = ata_pack_xfermask(dev->pio_mask, 0, 0); |
| 3249 | dma_mask = ata_pack_xfermask(0, dev->mwdma_mask, dev->udma_mask); |
Alan Cox | b3a7060 | 2007-10-02 12:38:26 -0400 | [diff] [blame] | 3250 | |
| 3251 | if (libata_dma_mask & mode_mask) |
| 3252 | dma_mask = ata_pack_xfermask(0, dev->mwdma_mask, dev->udma_mask); |
| 3253 | else |
| 3254 | dma_mask = 0; |
| 3255 | |
Tejun Heo | acf356b | 2006-03-24 14:07:50 +0900 | [diff] [blame] | 3256 | dev->pio_mode = ata_xfer_mask2mode(pio_mask); |
| 3257 | dev->dma_mode = ata_xfer_mask2mode(dma_mask); |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 3258 | |
Tejun Heo | 4f65977 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3259 | found = 1; |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 3260 | if (dev->dma_mode != 0xff) |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 3261 | used_dma = 1; |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 3262 | } |
Tejun Heo | 4f65977 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3263 | if (!found) |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3264 | goto out; |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 3265 | |
| 3266 | /* step 2: always set host PIO timings */ |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3267 | ata_link_for_each_dev(dev, link) { |
Tejun Heo | e8e0619 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3268 | if (!ata_dev_enabled(dev)) |
| 3269 | continue; |
| 3270 | |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 3271 | if (dev->pio_mode == 0xff) { |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 3272 | ata_dev_printk(dev, KERN_WARNING, "no PIO support\n"); |
Tejun Heo | e8e0619 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3273 | rc = -EINVAL; |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3274 | goto out; |
Tejun Heo | e8e0619 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3275 | } |
| 3276 | |
| 3277 | dev->xfer_mode = dev->pio_mode; |
| 3278 | dev->xfer_shift = ATA_SHIFT_PIO; |
| 3279 | if (ap->ops->set_piomode) |
| 3280 | ap->ops->set_piomode(ap, dev); |
| 3281 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3282 | |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 3283 | /* step 3: set host DMA timings */ |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3284 | ata_link_for_each_dev(dev, link) { |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 3285 | if (!ata_dev_enabled(dev) || dev->dma_mode == 0xff) |
Tejun Heo | e8e0619 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3286 | continue; |
| 3287 | |
| 3288 | dev->xfer_mode = dev->dma_mode; |
| 3289 | dev->xfer_shift = ata_xfer_mode2shift(dev->dma_mode); |
| 3290 | if (ap->ops->set_dmamode) |
| 3291 | ap->ops->set_dmamode(ap, dev); |
| 3292 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3293 | |
| 3294 | /* step 4: update devices' xfer mode */ |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3295 | ata_link_for_each_dev(dev, link) { |
Alan | 18d90de | 2007-01-24 11:42:38 +0000 | [diff] [blame] | 3296 | /* don't update suspended devices' xfer mode */ |
Tejun Heo | 9666f40 | 2007-05-04 21:27:47 +0200 | [diff] [blame] | 3297 | if (!ata_dev_enabled(dev)) |
Tejun Heo | 83206a2 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 3298 | continue; |
| 3299 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 3300 | rc = ata_dev_set_mode(dev); |
Tejun Heo | 5bbc53f | 2006-04-01 01:38:17 +0900 | [diff] [blame] | 3301 | if (rc) |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3302 | goto out; |
Tejun Heo | 83206a2 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 3303 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3304 | |
Tejun Heo | e8e0619 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3305 | /* Record simplex status. If we selected DMA then the other |
| 3306 | * host channels are not permitted to do so. |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 3307 | */ |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3308 | if (used_dma && (ap->host->flags & ATA_HOST_SIMPLEX)) |
Alan | 032af1c | 2007-03-01 17:36:46 +0000 | [diff] [blame] | 3309 | ap->host->simplex_claimed = ap; |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 3310 | |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3311 | out: |
| 3312 | if (rc) |
| 3313 | *r_failed_dev = dev; |
| 3314 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3315 | } |
| 3316 | |
| 3317 | /** |
Tejun Heo | aa2731a | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3318 | * ata_wait_ready - wait for link to become ready |
| 3319 | * @link: link to be waited on |
| 3320 | * @deadline: deadline jiffies for the operation |
| 3321 | * @check_ready: callback to check link readiness |
| 3322 | * |
| 3323 | * Wait for @link to become ready. @check_ready should return |
| 3324 | * positive number if @link is ready, 0 if it isn't, -ENODEV if |
| 3325 | * link doesn't seem to be occupied, other errno for other error |
| 3326 | * conditions. |
| 3327 | * |
| 3328 | * Transient -ENODEV conditions are allowed for |
| 3329 | * ATA_TMOUT_FF_WAIT. |
| 3330 | * |
| 3331 | * LOCKING: |
| 3332 | * EH context. |
| 3333 | * |
| 3334 | * RETURNS: |
| 3335 | * 0 if @linke is ready before @deadline; otherwise, -errno. |
| 3336 | */ |
| 3337 | int ata_wait_ready(struct ata_link *link, unsigned long deadline, |
| 3338 | int (*check_ready)(struct ata_link *link)) |
| 3339 | { |
| 3340 | unsigned long start = jiffies; |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 3341 | unsigned long nodev_deadline = ata_deadline(start, ATA_TMOUT_FF_WAIT); |
Tejun Heo | aa2731a | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3342 | int warned = 0; |
| 3343 | |
| 3344 | if (time_after(nodev_deadline, deadline)) |
| 3345 | nodev_deadline = deadline; |
| 3346 | |
| 3347 | while (1) { |
| 3348 | unsigned long now = jiffies; |
| 3349 | int ready, tmp; |
| 3350 | |
| 3351 | ready = tmp = check_ready(link); |
| 3352 | if (ready > 0) |
| 3353 | return 0; |
| 3354 | |
| 3355 | /* -ENODEV could be transient. Ignore -ENODEV if link |
| 3356 | * is online. Also, some SATA devices take a long |
| 3357 | * time to clear 0xff after reset. For example, |
| 3358 | * HHD424020F7SV00 iVDR needs >= 800ms while Quantum |
| 3359 | * GoVault needs even more than that. Wait for |
| 3360 | * ATA_TMOUT_FF_WAIT on -ENODEV if link isn't offline. |
| 3361 | * |
| 3362 | * Note that some PATA controllers (pata_ali) explode |
| 3363 | * if status register is read more than once when |
| 3364 | * there's no device attached. |
| 3365 | */ |
| 3366 | if (ready == -ENODEV) { |
| 3367 | if (ata_link_online(link)) |
| 3368 | ready = 0; |
| 3369 | else if ((link->ap->flags & ATA_FLAG_SATA) && |
| 3370 | !ata_link_offline(link) && |
| 3371 | time_before(now, nodev_deadline)) |
| 3372 | ready = 0; |
| 3373 | } |
| 3374 | |
| 3375 | if (ready) |
| 3376 | return ready; |
| 3377 | if (time_after(now, deadline)) |
| 3378 | return -EBUSY; |
| 3379 | |
| 3380 | if (!warned && time_after(now, start + 5 * HZ) && |
| 3381 | (deadline - now > 3 * HZ)) { |
| 3382 | ata_link_printk(link, KERN_WARNING, |
| 3383 | "link is slow to respond, please be patient " |
| 3384 | "(ready=%d)\n", tmp); |
| 3385 | warned = 1; |
| 3386 | } |
| 3387 | |
| 3388 | msleep(50); |
| 3389 | } |
| 3390 | } |
| 3391 | |
| 3392 | /** |
| 3393 | * ata_wait_after_reset - wait for link to become ready after reset |
| 3394 | * @link: link to be waited on |
| 3395 | * @deadline: deadline jiffies for the operation |
| 3396 | * @check_ready: callback to check link readiness |
| 3397 | * |
| 3398 | * Wait for @link to become ready after reset. |
| 3399 | * |
| 3400 | * LOCKING: |
| 3401 | * EH context. |
| 3402 | * |
| 3403 | * RETURNS: |
| 3404 | * 0 if @linke is ready before @deadline; otherwise, -errno. |
| 3405 | */ |
Harvey Harrison | 2b4221b | 2008-04-24 18:37:34 -0700 | [diff] [blame] | 3406 | int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, |
Tejun Heo | aa2731a | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3407 | int (*check_ready)(struct ata_link *link)) |
| 3408 | { |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 3409 | msleep(ATA_WAIT_AFTER_RESET); |
Tejun Heo | aa2731a | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3410 | |
| 3411 | return ata_wait_ready(link, deadline, check_ready); |
| 3412 | } |
| 3413 | |
| 3414 | /** |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3415 | * sata_link_debounce - debounce SATA phy status |
| 3416 | * @link: ATA link to debounce SATA phy status for |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3417 | * @params: timing parameters { interval, duratinon, timeout } in msec |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3418 | * @deadline: deadline jiffies for the operation |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3419 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3420 | * Make sure SStatus of @link reaches stable state, determined by |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3421 | * holding the same value where DET is not 1 for @duration polled |
| 3422 | * every @interval, before @timeout. Timeout constraints the |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3423 | * beginning of the stable state. Because DET gets stuck at 1 on |
| 3424 | * some controllers after hot unplugging, this functions waits |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3425 | * until timeout then returns 0 if DET is stable at 1. |
| 3426 | * |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3427 | * @timeout is further limited by @deadline. The sooner of the |
| 3428 | * two is used. |
| 3429 | * |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3430 | * LOCKING: |
| 3431 | * Kernel thread context (may sleep) |
| 3432 | * |
| 3433 | * RETURNS: |
| 3434 | * 0 on success, -errno on failure. |
| 3435 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3436 | int sata_link_debounce(struct ata_link *link, const unsigned long *params, |
| 3437 | unsigned long deadline) |
Tejun Heo | 7a7921e | 2006-02-02 18:20:00 +0900 | [diff] [blame] | 3438 | { |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 3439 | unsigned long interval = params[0]; |
| 3440 | unsigned long duration = params[1]; |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3441 | unsigned long last_jiffies, t; |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3442 | u32 last, cur; |
| 3443 | int rc; |
| 3444 | |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 3445 | t = ata_deadline(jiffies, params[2]); |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3446 | if (time_before(t, deadline)) |
| 3447 | deadline = t; |
| 3448 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3449 | if ((rc = sata_scr_read(link, SCR_STATUS, &cur))) |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3450 | return rc; |
| 3451 | cur &= 0xf; |
| 3452 | |
| 3453 | last = cur; |
| 3454 | last_jiffies = jiffies; |
| 3455 | |
| 3456 | while (1) { |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 3457 | msleep(interval); |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3458 | if ((rc = sata_scr_read(link, SCR_STATUS, &cur))) |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3459 | return rc; |
| 3460 | cur &= 0xf; |
| 3461 | |
| 3462 | /* DET stable? */ |
| 3463 | if (cur == last) { |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3464 | if (cur == 1 && time_before(jiffies, deadline)) |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3465 | continue; |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 3466 | if (time_after(jiffies, |
| 3467 | ata_deadline(last_jiffies, duration))) |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3468 | return 0; |
| 3469 | continue; |
| 3470 | } |
| 3471 | |
| 3472 | /* unstable, start over */ |
| 3473 | last = cur; |
| 3474 | last_jiffies = jiffies; |
| 3475 | |
Tejun Heo | f154515 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3476 | /* Check deadline. If debouncing failed, return |
| 3477 | * -EPIPE to tell upper layer to lower link speed. |
| 3478 | */ |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3479 | if (time_after(jiffies, deadline)) |
Tejun Heo | f154515 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3480 | return -EPIPE; |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3481 | } |
| 3482 | } |
| 3483 | |
| 3484 | /** |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3485 | * sata_link_resume - resume SATA link |
| 3486 | * @link: ATA link to resume SATA |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3487 | * @params: timing parameters { interval, duratinon, timeout } in msec |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3488 | * @deadline: deadline jiffies for the operation |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3489 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3490 | * Resume SATA phy @link and debounce it. |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3491 | * |
| 3492 | * LOCKING: |
| 3493 | * Kernel thread context (may sleep) |
| 3494 | * |
| 3495 | * RETURNS: |
| 3496 | * 0 on success, -errno on failure. |
| 3497 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3498 | int sata_link_resume(struct ata_link *link, const unsigned long *params, |
| 3499 | unsigned long deadline) |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3500 | { |
Tejun Heo | ac37198 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3501 | u32 scontrol, serror; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3502 | int rc; |
Tejun Heo | 7a7921e | 2006-02-02 18:20:00 +0900 | [diff] [blame] | 3503 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3504 | if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol))) |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3505 | return rc; |
| 3506 | |
Tejun Heo | 852ee16 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3507 | scontrol = (scontrol & 0x0f0) | 0x300; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3508 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3509 | if ((rc = sata_scr_write(link, SCR_CONTROL, scontrol))) |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3510 | return rc; |
Tejun Heo | 7a7921e | 2006-02-02 18:20:00 +0900 | [diff] [blame] | 3511 | |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3512 | /* Some PHYs react badly if SStatus is pounded immediately |
| 3513 | * after resuming. Delay 200ms before debouncing. |
| 3514 | */ |
| 3515 | msleep(200); |
Tejun Heo | 7a7921e | 2006-02-02 18:20:00 +0900 | [diff] [blame] | 3516 | |
Tejun Heo | ac37198 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3517 | if ((rc = sata_link_debounce(link, params, deadline))) |
| 3518 | return rc; |
| 3519 | |
Tejun Heo | f046519 | 2008-05-19 01:15:08 +0900 | [diff] [blame] | 3520 | /* clear SError, some PHYs require this even for SRST to work */ |
Tejun Heo | ac37198 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3521 | if (!(rc = sata_scr_read(link, SCR_ERROR, &serror))) |
| 3522 | rc = sata_scr_write(link, SCR_ERROR, serror); |
Tejun Heo | ac37198 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3523 | |
Tejun Heo | f046519 | 2008-05-19 01:15:08 +0900 | [diff] [blame] | 3524 | return rc != -EINVAL ? rc : 0; |
Tejun Heo | 7a7921e | 2006-02-02 18:20:00 +0900 | [diff] [blame] | 3525 | } |
| 3526 | |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3527 | /** |
Tejun Heo | 0aa1113 | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 3528 | * ata_std_prereset - prepare for reset |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3529 | * @link: ATA link to be reset |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3530 | * @deadline: deadline jiffies for the operation |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3531 | * |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3532 | * @link is about to be reset. Initialize it. Failure from |
Tejun Heo | b8cffc6 | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3533 | * prereset makes libata abort whole reset sequence and give up |
| 3534 | * that port, so prereset should be best-effort. It does its |
| 3535 | * best to prepare for reset sequence but if things go wrong, it |
| 3536 | * should just whine, not fail. |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3537 | * |
| 3538 | * LOCKING: |
| 3539 | * Kernel thread context (may sleep) |
| 3540 | * |
| 3541 | * RETURNS: |
| 3542 | * 0 on success, -errno otherwise. |
| 3543 | */ |
Tejun Heo | 0aa1113 | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 3544 | int ata_std_prereset(struct ata_link *link, unsigned long deadline) |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3545 | { |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3546 | struct ata_port *ap = link->ap; |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3547 | struct ata_eh_context *ehc = &link->eh_context; |
Tejun Heo | e9c8391 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 3548 | const unsigned long *timing = sata_ehc_deb_timing(ehc); |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3549 | int rc; |
| 3550 | |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3551 | /* if we're about to do hardreset, nothing more to do */ |
| 3552 | if (ehc->i.action & ATA_EH_HARDRESET) |
| 3553 | return 0; |
| 3554 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3555 | /* if SATA, resume link */ |
Tejun Heo | a16abc0 | 2007-05-21 18:33:47 +0200 | [diff] [blame] | 3556 | if (ap->flags & ATA_FLAG_SATA) { |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3557 | rc = sata_link_resume(link, timing, deadline); |
Tejun Heo | b8cffc6 | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3558 | /* whine about phy resume failure but proceed */ |
| 3559 | if (rc && rc != -EOPNOTSUPP) |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3560 | ata_link_printk(link, KERN_WARNING, "failed to resume " |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3561 | "link for reset (errno=%d)\n", rc); |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3562 | } |
| 3563 | |
Tejun Heo | 45db2f6 | 2008-04-08 01:46:56 +0900 | [diff] [blame] | 3564 | /* no point in trying softreset on offline link */ |
| 3565 | if (ata_link_offline(link)) |
| 3566 | ehc->i.action &= ~ATA_EH_SOFTRESET; |
| 3567 | |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3568 | return 0; |
| 3569 | } |
| 3570 | |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3571 | /** |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3572 | * sata_link_hardreset - reset link via SATA phy reset |
| 3573 | * @link: link to reset |
Tejun Heo | b6103f6 | 2006-11-01 17:59:53 +0900 | [diff] [blame] | 3574 | * @timing: timing parameters { interval, duratinon, timeout } in msec |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3575 | * @deadline: deadline jiffies for the operation |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3576 | * @online: optional out parameter indicating link onlineness |
| 3577 | * @check_ready: optional callback to check link readiness |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3578 | * |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3579 | * SATA phy-reset @link using DET bits of SControl register. |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3580 | * After hardreset, link readiness is waited upon using |
| 3581 | * ata_wait_ready() if @check_ready is specified. LLDs are |
| 3582 | * allowed to not specify @check_ready and wait itself after this |
| 3583 | * function returns. Device classification is LLD's |
| 3584 | * responsibility. |
| 3585 | * |
| 3586 | * *@online is set to one iff reset succeeded and @link is online |
| 3587 | * after reset. |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3588 | * |
| 3589 | * LOCKING: |
| 3590 | * Kernel thread context (may sleep) |
| 3591 | * |
| 3592 | * RETURNS: |
| 3593 | * 0 on success, -errno otherwise. |
| 3594 | */ |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3595 | int sata_link_hardreset(struct ata_link *link, const unsigned long *timing, |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3596 | unsigned long deadline, |
| 3597 | bool *online, int (*check_ready)(struct ata_link *)) |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3598 | { |
Tejun Heo | 852ee16 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3599 | u32 scontrol; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3600 | int rc; |
Tejun Heo | 852ee16 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3601 | |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3602 | DPRINTK("ENTER\n"); |
| 3603 | |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3604 | if (online) |
| 3605 | *online = false; |
| 3606 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3607 | if (sata_set_spd_needed(link)) { |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 3608 | /* SATA spec says nothing about how to reconfigure |
| 3609 | * spd. To be on the safe side, turn off phy during |
| 3610 | * reconfiguration. This works for at least ICH7 AHCI |
| 3611 | * and Sil3124. |
| 3612 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3613 | if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol))) |
Tejun Heo | b6103f6 | 2006-11-01 17:59:53 +0900 | [diff] [blame] | 3614 | goto out; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3615 | |
Martin Hicks | a34b6fc | 2006-07-05 15:06:13 -0400 | [diff] [blame] | 3616 | scontrol = (scontrol & 0x0f0) | 0x304; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3617 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3618 | if ((rc = sata_scr_write(link, SCR_CONTROL, scontrol))) |
Tejun Heo | b6103f6 | 2006-11-01 17:59:53 +0900 | [diff] [blame] | 3619 | goto out; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 3620 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3621 | sata_set_spd(link); |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 3622 | } |
| 3623 | |
| 3624 | /* issue phy wake/reset */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3625 | if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol))) |
Tejun Heo | b6103f6 | 2006-11-01 17:59:53 +0900 | [diff] [blame] | 3626 | goto out; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3627 | |
Tejun Heo | 852ee16 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3628 | scontrol = (scontrol & 0x0f0) | 0x301; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3629 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3630 | if ((rc = sata_scr_write_flush(link, SCR_CONTROL, scontrol))) |
Tejun Heo | b6103f6 | 2006-11-01 17:59:53 +0900 | [diff] [blame] | 3631 | goto out; |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3632 | |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 3633 | /* Couldn't find anything in SATA I/II specs, but AHCI-1.1 |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3634 | * 10.4.2 says at least 1 ms. |
| 3635 | */ |
| 3636 | msleep(1); |
| 3637 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3638 | /* bring link back */ |
| 3639 | rc = sata_link_resume(link, timing, deadline); |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3640 | if (rc) |
| 3641 | goto out; |
| 3642 | /* if link is offline nothing more to do */ |
| 3643 | if (ata_link_offline(link)) |
| 3644 | goto out; |
| 3645 | |
| 3646 | /* Link is online. From this point, -ENODEV too is an error. */ |
| 3647 | if (online) |
| 3648 | *online = true; |
| 3649 | |
Tejun Heo | 071f44b | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 3650 | if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) { |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3651 | /* If PMP is supported, we have to do follow-up SRST. |
| 3652 | * Some PMPs don't send D2H Reg FIS after hardreset if |
| 3653 | * the first port is empty. Wait only for |
| 3654 | * ATA_TMOUT_PMP_SRST_WAIT. |
| 3655 | */ |
| 3656 | if (check_ready) { |
| 3657 | unsigned long pmp_deadline; |
| 3658 | |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 3659 | pmp_deadline = ata_deadline(jiffies, |
| 3660 | ATA_TMOUT_PMP_SRST_WAIT); |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3661 | if (time_after(pmp_deadline, deadline)) |
| 3662 | pmp_deadline = deadline; |
| 3663 | ata_wait_ready(link, pmp_deadline, check_ready); |
| 3664 | } |
| 3665 | rc = -EAGAIN; |
| 3666 | goto out; |
| 3667 | } |
| 3668 | |
| 3669 | rc = 0; |
| 3670 | if (check_ready) |
| 3671 | rc = ata_wait_ready(link, deadline, check_ready); |
Tejun Heo | b6103f6 | 2006-11-01 17:59:53 +0900 | [diff] [blame] | 3672 | out: |
Tejun Heo | 0cbf071 | 2008-05-19 01:15:05 +0900 | [diff] [blame] | 3673 | if (rc && rc != -EAGAIN) { |
| 3674 | /* online is set iff link is online && reset succeeded */ |
| 3675 | if (online) |
| 3676 | *online = false; |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3677 | ata_link_printk(link, KERN_ERR, |
| 3678 | "COMRESET failed (errno=%d)\n", rc); |
Tejun Heo | 0cbf071 | 2008-05-19 01:15:05 +0900 | [diff] [blame] | 3679 | } |
Tejun Heo | b6103f6 | 2006-11-01 17:59:53 +0900 | [diff] [blame] | 3680 | DPRINTK("EXIT, rc=%d\n", rc); |
| 3681 | return rc; |
| 3682 | } |
| 3683 | |
| 3684 | /** |
Tejun Heo | 57c9efd | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3685 | * sata_std_hardreset - COMRESET w/o waiting or classification |
| 3686 | * @link: link to reset |
| 3687 | * @class: resulting class of attached device |
| 3688 | * @deadline: deadline jiffies for the operation |
| 3689 | * |
| 3690 | * Standard SATA COMRESET w/o waiting or classification. |
| 3691 | * |
| 3692 | * LOCKING: |
| 3693 | * Kernel thread context (may sleep) |
| 3694 | * |
| 3695 | * RETURNS: |
| 3696 | * 0 if link offline, -EAGAIN if link online, -errno on errors. |
| 3697 | */ |
| 3698 | int sata_std_hardreset(struct ata_link *link, unsigned int *class, |
| 3699 | unsigned long deadline) |
| 3700 | { |
| 3701 | const unsigned long *timing = sata_ehc_deb_timing(&link->eh_context); |
| 3702 | bool online; |
| 3703 | int rc; |
| 3704 | |
| 3705 | /* do hardreset */ |
| 3706 | rc = sata_link_hardreset(link, timing, deadline, &online, NULL); |
Tejun Heo | 57c9efd | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3707 | return online ? -EAGAIN : rc; |
| 3708 | } |
| 3709 | |
| 3710 | /** |
Tejun Heo | 203c75b | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 3711 | * ata_std_postreset - standard postreset callback |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3712 | * @link: the target ata_link |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3713 | * @classes: classes of attached devices |
| 3714 | * |
| 3715 | * This function is invoked after a successful reset. Note that |
| 3716 | * the device might have been reset more than once using |
| 3717 | * different reset methods before postreset is invoked. |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3718 | * |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3719 | * LOCKING: |
| 3720 | * Kernel thread context (may sleep) |
| 3721 | */ |
Tejun Heo | 203c75b | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 3722 | void ata_std_postreset(struct ata_link *link, unsigned int *classes) |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3723 | { |
Tejun Heo | f046519 | 2008-05-19 01:15:08 +0900 | [diff] [blame] | 3724 | u32 serror; |
| 3725 | |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3726 | DPRINTK("ENTER\n"); |
| 3727 | |
Tejun Heo | f046519 | 2008-05-19 01:15:08 +0900 | [diff] [blame] | 3728 | /* reset complete, clear SError */ |
| 3729 | if (!sata_scr_read(link, SCR_ERROR, &serror)) |
| 3730 | sata_scr_write(link, SCR_ERROR, serror); |
| 3731 | |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3732 | /* print link status */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3733 | sata_print_link_status(link); |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3734 | |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3735 | DPRINTK("EXIT\n"); |
| 3736 | } |
| 3737 | |
Tejun Heo | a62c0fc | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3738 | /** |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3739 | * ata_dev_same_device - Determine whether new ID matches configured device |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3740 | * @dev: device to compare against |
| 3741 | * @new_class: class of the new device |
| 3742 | * @new_id: IDENTIFY page of the new device |
| 3743 | * |
| 3744 | * Compare @new_class and @new_id against @dev and determine |
| 3745 | * whether @dev is the device indicated by @new_class and |
| 3746 | * @new_id. |
| 3747 | * |
| 3748 | * LOCKING: |
| 3749 | * None. |
| 3750 | * |
| 3751 | * RETURNS: |
| 3752 | * 1 if @dev matches @new_class and @new_id, 0 otherwise. |
| 3753 | */ |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 3754 | static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class, |
| 3755 | const u16 *new_id) |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3756 | { |
| 3757 | const u16 *old_id = dev->id; |
Tejun Heo | a0cf733 | 2007-01-02 20:18:49 +0900 | [diff] [blame] | 3758 | unsigned char model[2][ATA_ID_PROD_LEN + 1]; |
| 3759 | unsigned char serial[2][ATA_ID_SERNO_LEN + 1]; |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3760 | |
| 3761 | if (dev->class != new_class) { |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 3762 | ata_dev_printk(dev, KERN_INFO, "class mismatch %d != %d\n", |
| 3763 | dev->class, new_class); |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3764 | return 0; |
| 3765 | } |
| 3766 | |
Tejun Heo | a0cf733 | 2007-01-02 20:18:49 +0900 | [diff] [blame] | 3767 | ata_id_c_string(old_id, model[0], ATA_ID_PROD, sizeof(model[0])); |
| 3768 | ata_id_c_string(new_id, model[1], ATA_ID_PROD, sizeof(model[1])); |
| 3769 | ata_id_c_string(old_id, serial[0], ATA_ID_SERNO, sizeof(serial[0])); |
| 3770 | ata_id_c_string(new_id, serial[1], ATA_ID_SERNO, sizeof(serial[1])); |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3771 | |
| 3772 | if (strcmp(model[0], model[1])) { |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 3773 | ata_dev_printk(dev, KERN_INFO, "model number mismatch " |
| 3774 | "'%s' != '%s'\n", model[0], model[1]); |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3775 | return 0; |
| 3776 | } |
| 3777 | |
| 3778 | if (strcmp(serial[0], serial[1])) { |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 3779 | ata_dev_printk(dev, KERN_INFO, "serial number mismatch " |
| 3780 | "'%s' != '%s'\n", serial[0], serial[1]); |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3781 | return 0; |
| 3782 | } |
| 3783 | |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3784 | return 1; |
| 3785 | } |
| 3786 | |
| 3787 | /** |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3788 | * ata_dev_reread_id - Re-read IDENTIFY data |
Henrik Kretzschmar | 3fae450 | 2007-06-19 10:10:50 +0200 | [diff] [blame] | 3789 | * @dev: target ATA device |
Tejun Heo | bff0464 | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 3790 | * @readid_flags: read ID flags |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3791 | * |
| 3792 | * Re-read IDENTIFY page and make sure @dev is still attached to |
| 3793 | * the port. |
| 3794 | * |
| 3795 | * LOCKING: |
| 3796 | * Kernel thread context (may sleep) |
| 3797 | * |
| 3798 | * RETURNS: |
| 3799 | * 0 on success, negative errno otherwise |
| 3800 | */ |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3801 | int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags) |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3802 | { |
Tejun Heo | 5eb45c0 | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 3803 | unsigned int class = dev->class; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 3804 | u16 *id = (void *)dev->link->ap->sector_buf; |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3805 | int rc; |
| 3806 | |
Tejun Heo | fe635c7 | 2006-05-15 20:57:35 +0900 | [diff] [blame] | 3807 | /* read ID data */ |
Tejun Heo | bff0464 | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 3808 | rc = ata_dev_read_id(dev, &class, readid_flags, id); |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3809 | if (rc) |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3810 | return rc; |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3811 | |
| 3812 | /* is the device still there? */ |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3813 | if (!ata_dev_same_device(dev, class, id)) |
| 3814 | return -ENODEV; |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3815 | |
Tejun Heo | fe635c7 | 2006-05-15 20:57:35 +0900 | [diff] [blame] | 3816 | memcpy(dev->id, id, sizeof(id[0]) * ATA_ID_WORDS); |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3817 | return 0; |
| 3818 | } |
| 3819 | |
| 3820 | /** |
| 3821 | * ata_dev_revalidate - Revalidate ATA device |
| 3822 | * @dev: device to revalidate |
Tejun Heo | 422c9da | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 3823 | * @new_class: new class code |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3824 | * @readid_flags: read ID flags |
| 3825 | * |
| 3826 | * Re-read IDENTIFY page, make sure @dev is still attached to the |
| 3827 | * port and reconfigure it according to the new IDENTIFY page. |
| 3828 | * |
| 3829 | * LOCKING: |
| 3830 | * Kernel thread context (may sleep) |
| 3831 | * |
| 3832 | * RETURNS: |
| 3833 | * 0 on success, negative errno otherwise |
| 3834 | */ |
Tejun Heo | 422c9da | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 3835 | int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class, |
| 3836 | unsigned int readid_flags) |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3837 | { |
Tejun Heo | 6ddcd3b | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3838 | u64 n_sectors = dev->n_sectors; |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3839 | int rc; |
| 3840 | |
| 3841 | if (!ata_dev_enabled(dev)) |
| 3842 | return -ENODEV; |
| 3843 | |
Tejun Heo | 422c9da | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 3844 | /* fail early if !ATA && !ATAPI to avoid issuing [P]IDENTIFY to PMP */ |
| 3845 | if (ata_class_enabled(new_class) && |
| 3846 | new_class != ATA_DEV_ATA && new_class != ATA_DEV_ATAPI) { |
| 3847 | ata_dev_printk(dev, KERN_INFO, "class mismatch %u != %u\n", |
| 3848 | dev->class, new_class); |
| 3849 | rc = -ENODEV; |
| 3850 | goto fail; |
| 3851 | } |
| 3852 | |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3853 | /* re-read ID */ |
| 3854 | rc = ata_dev_reread_id(dev, readid_flags); |
| 3855 | if (rc) |
| 3856 | goto fail; |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3857 | |
| 3858 | /* configure device according to the new ID */ |
Tejun Heo | efdaedc | 2006-11-01 18:38:52 +0900 | [diff] [blame] | 3859 | rc = ata_dev_configure(dev); |
Tejun Heo | 6ddcd3b | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3860 | if (rc) |
| 3861 | goto fail; |
| 3862 | |
| 3863 | /* verify n_sectors hasn't changed */ |
Tejun Heo | b54eebd | 2007-08-17 18:46:51 +0900 | [diff] [blame] | 3864 | if (dev->class == ATA_DEV_ATA && n_sectors && |
| 3865 | dev->n_sectors != n_sectors) { |
Tejun Heo | 6ddcd3b | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3866 | ata_dev_printk(dev, KERN_INFO, "n_sectors mismatch " |
| 3867 | "%llu != %llu\n", |
| 3868 | (unsigned long long)n_sectors, |
| 3869 | (unsigned long long)dev->n_sectors); |
Tejun Heo | 8270bec | 2007-08-16 03:02:22 +0900 | [diff] [blame] | 3870 | |
| 3871 | /* restore original n_sectors */ |
| 3872 | dev->n_sectors = n_sectors; |
| 3873 | |
Tejun Heo | 6ddcd3b | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3874 | rc = -ENODEV; |
| 3875 | goto fail; |
| 3876 | } |
| 3877 | |
| 3878 | return 0; |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3879 | |
| 3880 | fail: |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 3881 | ata_dev_printk(dev, KERN_ERR, "revalidation failed (errno=%d)\n", rc); |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3882 | return rc; |
| 3883 | } |
| 3884 | |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 3885 | struct ata_blacklist_entry { |
| 3886 | const char *model_num; |
| 3887 | const char *model_rev; |
| 3888 | unsigned long horkage; |
| 3889 | }; |
| 3890 | |
| 3891 | static const struct ata_blacklist_entry ata_device_blacklist [] = { |
| 3892 | /* Devices with DMA related problems under Linux */ |
| 3893 | { "WDC AC11000H", NULL, ATA_HORKAGE_NODMA }, |
| 3894 | { "WDC AC22100H", NULL, ATA_HORKAGE_NODMA }, |
| 3895 | { "WDC AC32500H", NULL, ATA_HORKAGE_NODMA }, |
| 3896 | { "WDC AC33100H", NULL, ATA_HORKAGE_NODMA }, |
| 3897 | { "WDC AC31600H", NULL, ATA_HORKAGE_NODMA }, |
| 3898 | { "WDC AC32100H", "24.09P07", ATA_HORKAGE_NODMA }, |
| 3899 | { "WDC AC23200L", "21.10N21", ATA_HORKAGE_NODMA }, |
| 3900 | { "Compaq CRD-8241B", NULL, ATA_HORKAGE_NODMA }, |
| 3901 | { "CRD-8400B", NULL, ATA_HORKAGE_NODMA }, |
| 3902 | { "CRD-8480B", NULL, ATA_HORKAGE_NODMA }, |
| 3903 | { "CRD-8482B", NULL, ATA_HORKAGE_NODMA }, |
| 3904 | { "CRD-84", NULL, ATA_HORKAGE_NODMA }, |
| 3905 | { "SanDisk SDP3B", NULL, ATA_HORKAGE_NODMA }, |
| 3906 | { "SanDisk SDP3B-64", NULL, ATA_HORKAGE_NODMA }, |
| 3907 | { "SANYO CD-ROM CRD", NULL, ATA_HORKAGE_NODMA }, |
| 3908 | { "HITACHI CDR-8", NULL, ATA_HORKAGE_NODMA }, |
| 3909 | { "HITACHI CDR-8335", NULL, ATA_HORKAGE_NODMA }, |
| 3910 | { "HITACHI CDR-8435", NULL, ATA_HORKAGE_NODMA }, |
| 3911 | { "Toshiba CD-ROM XM-6202B", NULL, ATA_HORKAGE_NODMA }, |
| 3912 | { "TOSHIBA CD-ROM XM-1702BC", NULL, ATA_HORKAGE_NODMA }, |
| 3913 | { "CD-532E-A", NULL, ATA_HORKAGE_NODMA }, |
| 3914 | { "E-IDE CD-ROM CR-840",NULL, ATA_HORKAGE_NODMA }, |
| 3915 | { "CD-ROM Drive/F5A", NULL, ATA_HORKAGE_NODMA }, |
| 3916 | { "WPI CDD-820", NULL, ATA_HORKAGE_NODMA }, |
| 3917 | { "SAMSUNG CD-ROM SC-148C", NULL, ATA_HORKAGE_NODMA }, |
| 3918 | { "SAMSUNG CD-ROM SC", NULL, ATA_HORKAGE_NODMA }, |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 3919 | { "ATAPI CD-ROM DRIVE 40X MAXIMUM",NULL,ATA_HORKAGE_NODMA }, |
| 3920 | { "_NEC DV5800A", NULL, ATA_HORKAGE_NODMA }, |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3921 | { "SAMSUNG CD-ROM SN-124", "N001", ATA_HORKAGE_NODMA }, |
Dave Jones | 39f1988 | 2007-05-21 14:31:03 -0400 | [diff] [blame] | 3922 | { "Seagate STT20000A", NULL, ATA_HORKAGE_NODMA }, |
Tejun Heo | 3af9a77 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 3923 | /* Odd clown on sil3726/4726 PMPs */ |
Tejun Heo | 50af2fa | 2008-05-19 01:15:14 +0900 | [diff] [blame] | 3924 | { "Config Disk", NULL, ATA_HORKAGE_DISABLE }, |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 3925 | |
Albert Lee | 18d6e9d | 2007-04-02 11:34:15 +0800 | [diff] [blame] | 3926 | /* Weird ATAPI devices */ |
Tejun Heo | 40a1d53 | 2007-06-27 02:49:38 +0900 | [diff] [blame] | 3927 | { "TORiSAN DVD-ROM DRD-N216", NULL, ATA_HORKAGE_MAX_SEC_128 }, |
Albert Lee | 18d6e9d | 2007-04-02 11:34:15 +0800 | [diff] [blame] | 3928 | |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 3929 | /* Devices we expect to fail diagnostics */ |
| 3930 | |
| 3931 | /* Devices where NCQ should be avoided */ |
| 3932 | /* NCQ is slow */ |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3933 | { "WDC WD740ADFD-00", NULL, ATA_HORKAGE_NONCQ }, |
Tejun Heo | 459ad68 | 2007-12-07 12:46:23 +0900 | [diff] [blame] | 3934 | { "WDC WD740ADFD-00NLR1", NULL, ATA_HORKAGE_NONCQ, }, |
Tejun Heo | 09125ea | 2007-02-28 15:21:23 +0900 | [diff] [blame] | 3935 | /* http://thread.gmane.org/gmane.linux.ide/14907 */ |
| 3936 | { "FUJITSU MHT2060BH", NULL, ATA_HORKAGE_NONCQ }, |
Paul Rolland | 7acfaf3 | 2007-03-26 21:43:44 -0800 | [diff] [blame] | 3937 | /* NCQ is broken */ |
Jeff Garzik | 539cc7c | 2007-09-20 16:31:47 -0400 | [diff] [blame] | 3938 | { "Maxtor *", "BANC*", ATA_HORKAGE_NONCQ }, |
Alan Cox | 0e3dbc0 | 2007-09-20 15:22:47 +0100 | [diff] [blame] | 3939 | { "Maxtor 7V300F0", "VA111630", ATA_HORKAGE_NONCQ }, |
Paolo Ornati | da6f0ec | 2007-10-04 11:06:56 +0900 | [diff] [blame] | 3940 | { "ST380817AS", "3.42", ATA_HORKAGE_NONCQ }, |
Tejun Heo | e41bd3e | 2007-12-09 19:45:39 +0900 | [diff] [blame] | 3941 | { "ST3160023AS", "3.42", ATA_HORKAGE_NONCQ }, |
Jeff Garzik | 539cc7c | 2007-09-20 16:31:47 -0400 | [diff] [blame] | 3942 | |
Robert Hancock | 36e337d | 2007-04-02 22:05:29 -0600 | [diff] [blame] | 3943 | /* Blacklist entries taken from Silicon Image 3124/3132 |
| 3944 | Windows driver .inf file - also several Linux problem reports */ |
| 3945 | { "HTS541060G9SA00", "MB3OC60D", ATA_HORKAGE_NONCQ, }, |
| 3946 | { "HTS541080G9SA00", "MB4OC60D", ATA_HORKAGE_NONCQ, }, |
| 3947 | { "HTS541010G9SA00", "MBZOC60D", ATA_HORKAGE_NONCQ, }, |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 3948 | |
Tejun Heo | 16c55b0 | 2007-08-29 11:58:33 +0900 | [diff] [blame] | 3949 | /* devices which puke on READ_NATIVE_MAX */ |
| 3950 | { "HDS724040KLSA80", "KFAOA20N", ATA_HORKAGE_BROKEN_HPA, }, |
| 3951 | { "WDC WD3200JD-00KLB0", "WD-WCAMR1130137", ATA_HORKAGE_BROKEN_HPA }, |
| 3952 | { "WDC WD2500JD-00HBB0", "WD-WMAL71490727", ATA_HORKAGE_BROKEN_HPA }, |
| 3953 | { "MAXTOR 6L080L4", "A93.0500", ATA_HORKAGE_BROKEN_HPA }, |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 3954 | |
Alan Cox | 93328e1 | 2007-09-29 04:06:48 -0400 | [diff] [blame] | 3955 | /* Devices which report 1 sector over size HPA */ |
| 3956 | { "ST340823A", NULL, ATA_HORKAGE_HPA_SIZE, }, |
| 3957 | { "ST320413A", NULL, ATA_HORKAGE_HPA_SIZE, }, |
Mikko Rapeli | b152fcd | 2008-02-19 01:41:25 +0100 | [diff] [blame] | 3958 | { "ST310211A", NULL, ATA_HORKAGE_HPA_SIZE, }, |
Alan Cox | 93328e1 | 2007-09-29 04:06:48 -0400 | [diff] [blame] | 3959 | |
Alan Cox | 6bbfd53 | 2007-11-05 22:58:58 +0000 | [diff] [blame] | 3960 | /* Devices which get the IVB wrong */ |
| 3961 | { "QUANTUM FIREBALLlct10 05", "A03.0900", ATA_HORKAGE_IVB, }, |
Alan Cox | a79067e | 2008-04-29 14:08:36 +0100 | [diff] [blame] | 3962 | /* Maybe we should just blacklist TSSTcorp... */ |
| 3963 | { "TSSTcorp CDDVDW SH-S202H", "SB00", ATA_HORKAGE_IVB, }, |
| 3964 | { "TSSTcorp CDDVDW SH-S202H", "SB01", ATA_HORKAGE_IVB, }, |
Alan Cox | 6bbfd53 | 2007-11-05 22:58:58 +0000 | [diff] [blame] | 3965 | { "TSSTcorp CDDVDW SH-S202J", "SB00", ATA_HORKAGE_IVB, }, |
Peter Missel | e9f3340 | 2007-11-27 18:04:42 +0100 | [diff] [blame] | 3966 | { "TSSTcorp CDDVDW SH-S202J", "SB01", ATA_HORKAGE_IVB, }, |
| 3967 | { "TSSTcorp CDDVDW SH-S202N", "SB00", ATA_HORKAGE_IVB, }, |
| 3968 | { "TSSTcorp CDDVDW SH-S202N", "SB01", ATA_HORKAGE_IVB, }, |
Alan Cox | 6bbfd53 | 2007-11-05 22:58:58 +0000 | [diff] [blame] | 3969 | |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 3970 | /* End Marker */ |
| 3971 | { } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3972 | }; |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 3973 | |
Adrian Bunk | 741b776 | 2007-10-24 18:23:06 +0200 | [diff] [blame] | 3974 | static int strn_pattern_cmp(const char *patt, const char *name, int wildchar) |
Jeff Garzik | 539cc7c | 2007-09-20 16:31:47 -0400 | [diff] [blame] | 3975 | { |
| 3976 | const char *p; |
| 3977 | int len; |
| 3978 | |
| 3979 | /* |
| 3980 | * check for trailing wildcard: *\0 |
| 3981 | */ |
| 3982 | p = strchr(patt, wildchar); |
| 3983 | if (p && ((*(p + 1)) == 0)) |
| 3984 | len = p - patt; |
Andrew Paprocki | 317b50b | 2007-10-15 15:43:12 -0400 | [diff] [blame] | 3985 | else { |
Jeff Garzik | 539cc7c | 2007-09-20 16:31:47 -0400 | [diff] [blame] | 3986 | len = strlen(name); |
Andrew Paprocki | 317b50b | 2007-10-15 15:43:12 -0400 | [diff] [blame] | 3987 | if (!len) { |
| 3988 | if (!*patt) |
| 3989 | return 0; |
| 3990 | return -1; |
| 3991 | } |
| 3992 | } |
Jeff Garzik | 539cc7c | 2007-09-20 16:31:47 -0400 | [diff] [blame] | 3993 | |
| 3994 | return strncmp(patt, name, len); |
| 3995 | } |
| 3996 | |
Tejun Heo | 75683fe | 2007-07-05 13:31:27 +0900 | [diff] [blame] | 3997 | static unsigned long ata_dev_blacklisted(const struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3998 | { |
Tejun Heo | 8bfa79f | 2007-01-02 20:19:40 +0900 | [diff] [blame] | 3999 | unsigned char model_num[ATA_ID_PROD_LEN + 1]; |
| 4000 | unsigned char model_rev[ATA_ID_FW_REV_LEN + 1]; |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4001 | const struct ata_blacklist_entry *ad = ata_device_blacklist; |
Albert Lee | 3a77827 | 2006-06-22 13:00:25 +0800 | [diff] [blame] | 4002 | |
Tejun Heo | 8bfa79f | 2007-01-02 20:19:40 +0900 | [diff] [blame] | 4003 | ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num)); |
| 4004 | ata_id_c_string(dev->id, model_rev, ATA_ID_FW_REV, sizeof(model_rev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4005 | |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4006 | while (ad->model_num) { |
Jeff Garzik | 539cc7c | 2007-09-20 16:31:47 -0400 | [diff] [blame] | 4007 | if (!strn_pattern_cmp(ad->model_num, model_num, '*')) { |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4008 | if (ad->model_rev == NULL) |
| 4009 | return ad->horkage; |
Jeff Garzik | 539cc7c | 2007-09-20 16:31:47 -0400 | [diff] [blame] | 4010 | if (!strn_pattern_cmp(ad->model_rev, model_rev, '*')) |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4011 | return ad->horkage; |
Alan Cox | f4b15fe | 2006-03-22 15:54:04 +0000 | [diff] [blame] | 4012 | } |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4013 | ad++; |
Alan Cox | f4b15fe | 2006-03-22 15:54:04 +0000 | [diff] [blame] | 4014 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4015 | return 0; |
| 4016 | } |
| 4017 | |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4018 | static int ata_dma_blacklisted(const struct ata_device *dev) |
| 4019 | { |
| 4020 | /* We don't support polling DMA. |
| 4021 | * DMA blacklist those ATAPI devices with CDB-intr (and use PIO) |
| 4022 | * if the LLDD handles only interrupts in the HSM_ST_LAST state. |
| 4023 | */ |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4024 | if ((dev->link->ap->flags & ATA_FLAG_PIO_POLLING) && |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4025 | (dev->flags & ATA_DFLAG_CDB_INTR)) |
| 4026 | return 1; |
Tejun Heo | 75683fe | 2007-07-05 13:31:27 +0900 | [diff] [blame] | 4027 | return (dev->horkage & ATA_HORKAGE_NODMA) ? 1 : 0; |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4028 | } |
| 4029 | |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 4030 | /** |
Alan Cox | 6bbfd53 | 2007-11-05 22:58:58 +0000 | [diff] [blame] | 4031 | * ata_is_40wire - check drive side detection |
| 4032 | * @dev: device |
| 4033 | * |
| 4034 | * Perform drive side detection decoding, allowing for device vendors |
| 4035 | * who can't follow the documentation. |
| 4036 | */ |
| 4037 | |
| 4038 | static int ata_is_40wire(struct ata_device *dev) |
| 4039 | { |
| 4040 | if (dev->horkage & ATA_HORKAGE_IVB) |
| 4041 | return ata_drive_40wire_relaxed(dev->id); |
| 4042 | return ata_drive_40wire(dev->id); |
| 4043 | } |
| 4044 | |
| 4045 | /** |
Alan Cox | 15a5551 | 2008-03-28 14:33:46 -0700 | [diff] [blame] | 4046 | * cable_is_40wire - 40/80/SATA decider |
| 4047 | * @ap: port to consider |
| 4048 | * |
| 4049 | * This function encapsulates the policy for speed management |
| 4050 | * in one place. At the moment we don't cache the result but |
| 4051 | * there is a good case for setting ap->cbl to the result when |
| 4052 | * we are called with unknown cables (and figuring out if it |
| 4053 | * impacts hotplug at all). |
| 4054 | * |
| 4055 | * Return 1 if the cable appears to be 40 wire. |
| 4056 | */ |
| 4057 | |
| 4058 | static int cable_is_40wire(struct ata_port *ap) |
| 4059 | { |
| 4060 | struct ata_link *link; |
| 4061 | struct ata_device *dev; |
| 4062 | |
| 4063 | /* If the controller thinks we are 40 wire, we are */ |
| 4064 | if (ap->cbl == ATA_CBL_PATA40) |
| 4065 | return 1; |
| 4066 | /* If the controller thinks we are 80 wire, we are */ |
| 4067 | if (ap->cbl == ATA_CBL_PATA80 || ap->cbl == ATA_CBL_SATA) |
| 4068 | return 0; |
Alan Cox | f792068 | 2008-04-08 16:37:50 +0100 | [diff] [blame] | 4069 | /* If the system is known to be 40 wire short cable (eg laptop), |
| 4070 | then we allow 80 wire modes even if the drive isn't sure */ |
| 4071 | if (ap->cbl == ATA_CBL_PATA40_SHORT) |
| 4072 | return 0; |
Alan Cox | 15a5551 | 2008-03-28 14:33:46 -0700 | [diff] [blame] | 4073 | /* If the controller doesn't know we scan |
| 4074 | |
| 4075 | - Note: We look for all 40 wire detects at this point. |
| 4076 | Any 80 wire detect is taken to be 80 wire cable |
| 4077 | because |
| 4078 | - In many setups only the one drive (slave if present) |
| 4079 | will give a valid detect |
| 4080 | - If you have a non detect capable drive you don't |
| 4081 | want it to colour the choice |
| 4082 | */ |
| 4083 | ata_port_for_each_link(link, ap) { |
| 4084 | ata_link_for_each_dev(dev, link) { |
| 4085 | if (!ata_is_40wire(dev)) |
| 4086 | return 0; |
| 4087 | } |
| 4088 | } |
| 4089 | return 1; |
| 4090 | } |
| 4091 | |
| 4092 | /** |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 4093 | * ata_dev_xfermask - Compute supported xfermask of the given device |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 4094 | * @dev: Device to compute xfermask for |
| 4095 | * |
Tejun Heo | acf356b | 2006-03-24 14:07:50 +0900 | [diff] [blame] | 4096 | * Compute supported xfermask of @dev and store it in |
| 4097 | * dev->*_mask. This function is responsible for applying all |
| 4098 | * known limits including host controller limits, device |
| 4099 | * blacklist, etc... |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 4100 | * |
| 4101 | * LOCKING: |
| 4102 | * None. |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 4103 | */ |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 4104 | static void ata_dev_xfermask(struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4105 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4106 | struct ata_link *link = dev->link; |
| 4107 | struct ata_port *ap = link->ap; |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4108 | struct ata_host *host = ap->host; |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 4109 | unsigned long xfer_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4110 | |
Tejun Heo | 37deecb | 2006-08-10 16:59:07 +0900 | [diff] [blame] | 4111 | /* controller modes available */ |
Tejun Heo | 565083e | 2006-04-02 17:54:47 +0900 | [diff] [blame] | 4112 | xfer_mask = ata_pack_xfermask(ap->pio_mask, |
| 4113 | ap->mwdma_mask, ap->udma_mask); |
| 4114 | |
Robert Hancock | 8343f88 | 2007-03-06 02:37:51 -0800 | [diff] [blame] | 4115 | /* drive modes available */ |
Tejun Heo | 37deecb | 2006-08-10 16:59:07 +0900 | [diff] [blame] | 4116 | xfer_mask &= ata_pack_xfermask(dev->pio_mask, |
| 4117 | dev->mwdma_mask, dev->udma_mask); |
| 4118 | xfer_mask &= ata_id_xfermask(dev->id); |
Tejun Heo | 565083e | 2006-04-02 17:54:47 +0900 | [diff] [blame] | 4119 | |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 4120 | /* |
| 4121 | * CFA Advanced TrueIDE timings are not allowed on a shared |
| 4122 | * cable |
| 4123 | */ |
| 4124 | if (ata_dev_pair(dev)) { |
| 4125 | /* No PIO5 or PIO6 */ |
| 4126 | xfer_mask &= ~(0x03 << (ATA_SHIFT_PIO + 5)); |
| 4127 | /* No MWDMA3 or MWDMA 4 */ |
| 4128 | xfer_mask &= ~(0x03 << (ATA_SHIFT_MWDMA + 3)); |
| 4129 | } |
| 4130 | |
Tejun Heo | 37deecb | 2006-08-10 16:59:07 +0900 | [diff] [blame] | 4131 | if (ata_dma_blacklisted(dev)) { |
| 4132 | xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA); |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 4133 | ata_dev_printk(dev, KERN_WARNING, |
| 4134 | "device is on DMA blacklist, disabling DMA\n"); |
Tejun Heo | 37deecb | 2006-08-10 16:59:07 +0900 | [diff] [blame] | 4135 | } |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 4136 | |
Petr Vandrovec | 14d66ab | 2007-03-08 10:12:12 +0100 | [diff] [blame] | 4137 | if ((host->flags & ATA_HOST_SIMPLEX) && |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 4138 | host->simplex_claimed && host->simplex_claimed != ap) { |
Tejun Heo | 37deecb | 2006-08-10 16:59:07 +0900 | [diff] [blame] | 4139 | xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA); |
| 4140 | ata_dev_printk(dev, KERN_WARNING, "simplex DMA is claimed by " |
| 4141 | "other device, disabling DMA\n"); |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 4142 | } |
Tejun Heo | 565083e | 2006-04-02 17:54:47 +0900 | [diff] [blame] | 4143 | |
Jeff Garzik | e424675 | 2007-03-09 09:56:46 -0500 | [diff] [blame] | 4144 | if (ap->flags & ATA_FLAG_NO_IORDY) |
| 4145 | xfer_mask &= ata_pio_mask_no_iordy(dev); |
| 4146 | |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 4147 | if (ap->ops->mode_filter) |
Alan Cox | a76b62c | 2007-03-09 09:34:07 -0500 | [diff] [blame] | 4148 | xfer_mask = ap->ops->mode_filter(dev, xfer_mask); |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 4149 | |
Robert Hancock | 8343f88 | 2007-03-06 02:37:51 -0800 | [diff] [blame] | 4150 | /* Apply cable rule here. Don't apply it early because when |
| 4151 | * we handle hot plug the cable type can itself change. |
| 4152 | * Check this last so that we know if the transfer rate was |
| 4153 | * solely limited by the cable. |
| 4154 | * Unknown or 80 wire cables reported host side are checked |
| 4155 | * drive side as well. Cases where we know a 40wire cable |
| 4156 | * is used safely for 80 are not checked here. |
| 4157 | */ |
| 4158 | if (xfer_mask & (0xF8 << ATA_SHIFT_UDMA)) |
| 4159 | /* UDMA/44 or higher would be available */ |
Alan Cox | 15a5551 | 2008-03-28 14:33:46 -0700 | [diff] [blame] | 4160 | if (cable_is_40wire(ap)) { |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 4161 | ata_dev_printk(dev, KERN_WARNING, |
Robert Hancock | 8343f88 | 2007-03-06 02:37:51 -0800 | [diff] [blame] | 4162 | "limited to UDMA/33 due to 40-wire cable\n"); |
| 4163 | xfer_mask &= ~(0xF8 << ATA_SHIFT_UDMA); |
| 4164 | } |
| 4165 | |
Tejun Heo | 565083e | 2006-04-02 17:54:47 +0900 | [diff] [blame] | 4166 | ata_unpack_xfermask(xfer_mask, &dev->pio_mask, |
| 4167 | &dev->mwdma_mask, &dev->udma_mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4168 | } |
| 4169 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4170 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4171 | * ata_dev_set_xfermode - Issue SET FEATURES - XFER MODE command |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4172 | * @dev: Device to which command will be sent |
| 4173 | * |
Jeff Garzik | 780a87f | 2005-05-30 15:41:05 -0400 | [diff] [blame] | 4174 | * Issue SET FEATURES - XFER MODE command to device @dev |
| 4175 | * on port @ap. |
| 4176 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4177 | * LOCKING: |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4178 | * PCI/etc. bus probe sem. |
Tejun Heo | 83206a2 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 4179 | * |
| 4180 | * RETURNS: |
| 4181 | * 0 on success, AC_ERR_* mask otherwise. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4182 | */ |
| 4183 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 4184 | static unsigned int ata_dev_set_xfermode(struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4185 | { |
Tejun Heo | a012370 | 2005-12-13 14:49:31 +0900 | [diff] [blame] | 4186 | struct ata_taskfile tf; |
Tejun Heo | 83206a2 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 4187 | unsigned int err_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4188 | |
| 4189 | /* set up set-features taskfile */ |
| 4190 | DPRINTK("set features - xfer mode\n"); |
| 4191 | |
Tejun Heo | 464cf17 | 2007-05-27 15:10:40 +0200 | [diff] [blame] | 4192 | /* Some controllers and ATAPI devices show flaky interrupt |
| 4193 | * behavior after setting xfer mode. Use polling instead. |
| 4194 | */ |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 4195 | ata_tf_init(dev, &tf); |
Tejun Heo | a012370 | 2005-12-13 14:49:31 +0900 | [diff] [blame] | 4196 | tf.command = ATA_CMD_SET_FEATURES; |
| 4197 | tf.feature = SETFEATURES_XFER; |
Tejun Heo | 464cf17 | 2007-05-27 15:10:40 +0200 | [diff] [blame] | 4198 | tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_POLLING; |
Tejun Heo | a012370 | 2005-12-13 14:49:31 +0900 | [diff] [blame] | 4199 | tf.protocol = ATA_PROT_NODATA; |
Alan Cox | b9f8ab2 | 2007-11-19 14:33:11 +0000 | [diff] [blame] | 4200 | /* If we are using IORDY we must send the mode setting command */ |
Jeff Garzik | 11b7bec | 2007-11-23 21:12:14 -0500 | [diff] [blame] | 4201 | if (ata_pio_need_iordy(dev)) |
| 4202 | tf.nsect = dev->xfer_mode; |
Alan Cox | b9f8ab2 | 2007-11-19 14:33:11 +0000 | [diff] [blame] | 4203 | /* If the device has IORDY and the controller does not - turn it off */ |
| 4204 | else if (ata_id_has_iordy(dev->id)) |
Jeff Garzik | 11b7bec | 2007-11-23 21:12:14 -0500 | [diff] [blame] | 4205 | tf.nsect = 0x01; |
Alan Cox | b9f8ab2 | 2007-11-19 14:33:11 +0000 | [diff] [blame] | 4206 | else /* In the ancient relic department - skip all of this */ |
| 4207 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4208 | |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 4209 | err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4210 | |
Tejun Heo | 83206a2 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 4211 | DPRINTK("EXIT, err_mask=%x\n", err_mask); |
| 4212 | return err_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4213 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4214 | /** |
Jeff Garzik | 218f3d3 | 2007-10-25 00:33:27 -0400 | [diff] [blame] | 4215 | * ata_dev_set_feature - Issue SET FEATURES - SATA FEATURES |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 4216 | * @dev: Device to which command will be sent |
| 4217 | * @enable: Whether to enable or disable the feature |
Jeff Garzik | 218f3d3 | 2007-10-25 00:33:27 -0400 | [diff] [blame] | 4218 | * @feature: The sector count represents the feature to set |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 4219 | * |
| 4220 | * Issue SET FEATURES - SATA FEATURES command to device @dev |
Jeff Garzik | 218f3d3 | 2007-10-25 00:33:27 -0400 | [diff] [blame] | 4221 | * on port @ap with sector count |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 4222 | * |
| 4223 | * LOCKING: |
| 4224 | * PCI/etc. bus probe sem. |
| 4225 | * |
| 4226 | * RETURNS: |
| 4227 | * 0 on success, AC_ERR_* mask otherwise. |
| 4228 | */ |
Jeff Garzik | 218f3d3 | 2007-10-25 00:33:27 -0400 | [diff] [blame] | 4229 | static unsigned int ata_dev_set_feature(struct ata_device *dev, u8 enable, |
| 4230 | u8 feature) |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 4231 | { |
| 4232 | struct ata_taskfile tf; |
| 4233 | unsigned int err_mask; |
| 4234 | |
| 4235 | /* set up set-features taskfile */ |
| 4236 | DPRINTK("set features - SATA features\n"); |
| 4237 | |
| 4238 | ata_tf_init(dev, &tf); |
| 4239 | tf.command = ATA_CMD_SET_FEATURES; |
| 4240 | tf.feature = enable; |
| 4241 | tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 4242 | tf.protocol = ATA_PROT_NODATA; |
Jeff Garzik | 218f3d3 | 2007-10-25 00:33:27 -0400 | [diff] [blame] | 4243 | tf.nsect = feature; |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 4244 | |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 4245 | err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0); |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 4246 | |
| 4247 | DPRINTK("EXIT, err_mask=%x\n", err_mask); |
| 4248 | return err_mask; |
| 4249 | } |
| 4250 | |
| 4251 | /** |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4252 | * ata_dev_init_params - Issue INIT DEV PARAMS command |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4253 | * @dev: Device to which command will be sent |
Randy Dunlap | e2a7f77 | 2006-05-18 10:50:18 -0700 | [diff] [blame] | 4254 | * @heads: Number of heads (taskfile parameter) |
| 4255 | * @sectors: Number of sectors (taskfile parameter) |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4256 | * |
| 4257 | * LOCKING: |
Tejun Heo | 6aff8f1 | 2006-02-15 18:24:09 +0900 | [diff] [blame] | 4258 | * Kernel thread context (may sleep) |
| 4259 | * |
| 4260 | * RETURNS: |
| 4261 | * 0 on success, AC_ERR_* mask otherwise. |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4262 | */ |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 4263 | static unsigned int ata_dev_init_params(struct ata_device *dev, |
| 4264 | u16 heads, u16 sectors) |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4265 | { |
Tejun Heo | a012370 | 2005-12-13 14:49:31 +0900 | [diff] [blame] | 4266 | struct ata_taskfile tf; |
Tejun Heo | 6aff8f1 | 2006-02-15 18:24:09 +0900 | [diff] [blame] | 4267 | unsigned int err_mask; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4268 | |
| 4269 | /* Number of sectors per track 1-255. Number of heads 1-16 */ |
| 4270 | if (sectors < 1 || sectors > 255 || heads < 1 || heads > 16) |
Albert Lee | 00b6f5e | 2006-03-27 16:39:18 +0800 | [diff] [blame] | 4271 | return AC_ERR_INVALID; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4272 | |
| 4273 | /* set up init dev params taskfile */ |
| 4274 | DPRINTK("init dev params \n"); |
| 4275 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 4276 | ata_tf_init(dev, &tf); |
Tejun Heo | a012370 | 2005-12-13 14:49:31 +0900 | [diff] [blame] | 4277 | tf.command = ATA_CMD_INIT_DEV_PARAMS; |
| 4278 | tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 4279 | tf.protocol = ATA_PROT_NODATA; |
| 4280 | tf.nsect = sectors; |
| 4281 | tf.device |= (heads - 1) & 0x0f; /* max head = num. of heads - 1 */ |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4282 | |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 4283 | err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0); |
Alan Cox | 18b2466 | 2007-08-08 14:28:49 +0100 | [diff] [blame] | 4284 | /* A clean abort indicates an original or just out of spec drive |
| 4285 | and we should continue as we issue the setup based on the |
| 4286 | drive reported working geometry */ |
| 4287 | if (err_mask == AC_ERR_DEV && (tf.feature & ATA_ABORTED)) |
| 4288 | err_mask = 0; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4289 | |
Tejun Heo | 6aff8f1 | 2006-02-15 18:24:09 +0900 | [diff] [blame] | 4290 | DPRINTK("EXIT, err_mask=%x\n", err_mask); |
| 4291 | return err_mask; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4292 | } |
| 4293 | |
| 4294 | /** |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4295 | * ata_sg_clean - Unmap DMA memory associated with command |
| 4296 | * @qc: Command containing DMA memory to be released |
| 4297 | * |
| 4298 | * Unmap all mapped DMA memory associated with this command. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4299 | * |
| 4300 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4301 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4302 | */ |
Tejun Heo | 70e6ad0 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 4303 | void ata_sg_clean(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4304 | { |
| 4305 | struct ata_port *ap = qc->ap; |
Tejun Heo | ff2aeb1 | 2007-12-05 16:43:11 +0900 | [diff] [blame] | 4306 | struct scatterlist *sg = qc->sg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4307 | int dir = qc->dma_dir; |
| 4308 | |
Tejun Heo | a4631474 | 2006-02-11 19:11:13 +0900 | [diff] [blame] | 4309 | WARN_ON(sg == NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4310 | |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 4311 | VPRINTK("unmapping %u sg elements\n", qc->n_elem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4312 | |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 4313 | if (qc->n_elem) |
| 4314 | dma_unmap_sg(ap->dev, sg, qc->n_elem, dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4315 | |
| 4316 | qc->flags &= ~ATA_QCFLAG_DMAMAP; |
Tejun Heo | ff2aeb1 | 2007-12-05 16:43:11 +0900 | [diff] [blame] | 4317 | qc->sg = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4318 | } |
| 4319 | |
| 4320 | /** |
Tejun Heo | 5895ef9 | 2008-06-17 12:36:26 +0900 | [diff] [blame] | 4321 | * atapi_check_dma - Check whether ATAPI DMA can be supported |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4322 | * @qc: Metadata associated with taskfile to check |
| 4323 | * |
Jeff Garzik | 780a87f | 2005-05-30 15:41:05 -0400 | [diff] [blame] | 4324 | * Allow low-level driver to filter ATA PACKET commands, returning |
| 4325 | * a status indicating whether or not it is OK to use DMA for the |
| 4326 | * supplied PACKET command. |
| 4327 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4328 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4329 | * spin_lock_irqsave(host lock) |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4330 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4331 | * RETURNS: 0 when ATAPI DMA can be used |
| 4332 | * nonzero otherwise |
| 4333 | */ |
Tejun Heo | 5895ef9 | 2008-06-17 12:36:26 +0900 | [diff] [blame] | 4334 | int atapi_check_dma(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4335 | { |
| 4336 | struct ata_port *ap = qc->ap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4337 | |
Tejun Heo | b9a4197 | 2007-06-27 02:48:43 +0900 | [diff] [blame] | 4338 | /* Don't allow DMA if it isn't multiple of 16 bytes. Quite a |
| 4339 | * few ATAPI devices choke on such DMA requests. |
| 4340 | */ |
| 4341 | if (unlikely(qc->nbytes & 15)) |
| 4342 | return 1; |
Albert Lee | 6f23a31 | 2007-04-02 11:39:25 +0800 | [diff] [blame] | 4343 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4344 | if (ap->ops->check_atapi_dma) |
Tejun Heo | b9a4197 | 2007-06-27 02:48:43 +0900 | [diff] [blame] | 4345 | return ap->ops->check_atapi_dma(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4346 | |
Tejun Heo | b9a4197 | 2007-06-27 02:48:43 +0900 | [diff] [blame] | 4347 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4348 | } |
Tejun Heo | b9a4197 | 2007-06-27 02:48:43 +0900 | [diff] [blame] | 4349 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4350 | /** |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 4351 | * ata_std_qc_defer - Check whether a qc needs to be deferred |
| 4352 | * @qc: ATA command in question |
| 4353 | * |
| 4354 | * Non-NCQ commands cannot run with any other command, NCQ or |
| 4355 | * not. As upper layer only knows the queue depth, we are |
| 4356 | * responsible for maintaining exclusion. This function checks |
| 4357 | * whether a new command @qc can be issued. |
| 4358 | * |
| 4359 | * LOCKING: |
| 4360 | * spin_lock_irqsave(host lock) |
| 4361 | * |
| 4362 | * RETURNS: |
| 4363 | * ATA_DEFER_* if deferring is needed, 0 otherwise. |
| 4364 | */ |
| 4365 | int ata_std_qc_defer(struct ata_queued_cmd *qc) |
| 4366 | { |
| 4367 | struct ata_link *link = qc->dev->link; |
| 4368 | |
| 4369 | if (qc->tf.protocol == ATA_PROT_NCQ) { |
| 4370 | if (!ata_tag_valid(link->active_tag)) |
| 4371 | return 0; |
| 4372 | } else { |
| 4373 | if (!ata_tag_valid(link->active_tag) && !link->sactive) |
| 4374 | return 0; |
| 4375 | } |
| 4376 | |
| 4377 | return ATA_DEFER_LINK; |
| 4378 | } |
| 4379 | |
Brian King | e46834c | 2006-03-17 17:04:03 -0600 | [diff] [blame] | 4380 | void ata_noop_qc_prep(struct ata_queued_cmd *qc) { } |
| 4381 | |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4382 | /** |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4383 | * ata_sg_init - Associate command with scatter-gather table. |
| 4384 | * @qc: Command to be associated |
| 4385 | * @sg: Scatter-gather table. |
| 4386 | * @n_elem: Number of elements in s/g table. |
| 4387 | * |
| 4388 | * Initialize the data-related elements of queued_cmd @qc |
| 4389 | * to point to a scatter-gather table @sg, containing @n_elem |
| 4390 | * elements. |
| 4391 | * |
| 4392 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4393 | * spin_lock_irqsave(host lock) |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4394 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4395 | void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, |
| 4396 | unsigned int n_elem) |
| 4397 | { |
Tejun Heo | ff2aeb1 | 2007-12-05 16:43:11 +0900 | [diff] [blame] | 4398 | qc->sg = sg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4399 | qc->n_elem = n_elem; |
Tejun Heo | ff2aeb1 | 2007-12-05 16:43:11 +0900 | [diff] [blame] | 4400 | qc->cursg = qc->sg; |
| 4401 | } |
| 4402 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4403 | /** |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4404 | * ata_sg_setup - DMA-map the scatter-gather table associated with a command. |
| 4405 | * @qc: Command with scatter-gather table to be mapped. |
| 4406 | * |
| 4407 | * DMA-map the scatter-gather table associated with queued_cmd @qc. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4408 | * |
| 4409 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4410 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4411 | * |
| 4412 | * RETURNS: |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4413 | * Zero on success, negative on error. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4414 | * |
| 4415 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4416 | static int ata_sg_setup(struct ata_queued_cmd *qc) |
| 4417 | { |
| 4418 | struct ata_port *ap = qc->ap; |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 4419 | unsigned int n_elem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4420 | |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 4421 | VPRINTK("ENTER, ata%u\n", ap->print_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4422 | |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 4423 | n_elem = dma_map_sg(ap->dev, qc->sg, qc->n_elem, qc->dma_dir); |
| 4424 | if (n_elem < 1) |
| 4425 | return -1; |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 4426 | |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 4427 | DPRINTK("%d sg elements mapped\n", n_elem); |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 4428 | |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 4429 | qc->n_elem = n_elem; |
Tejun Heo | f92a263 | 2007-12-05 16:43:10 +0900 | [diff] [blame] | 4430 | qc->flags |= ATA_QCFLAG_DMAMAP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4431 | |
| 4432 | return 0; |
| 4433 | } |
| 4434 | |
| 4435 | /** |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 4436 | * swap_buf_le16 - swap halves of 16-bit words in place |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 4437 | * @buf: Buffer to swap |
| 4438 | * @buf_words: Number of 16-bit words in buffer. |
| 4439 | * |
| 4440 | * Swap halves of 16-bit words if needed to convert from |
| 4441 | * little-endian byte order to native cpu byte order, or |
| 4442 | * vice-versa. |
| 4443 | * |
| 4444 | * LOCKING: |
Randy Dunlap | 6f0ef4f | 2005-10-25 01:44:30 -0400 | [diff] [blame] | 4445 | * Inherited from caller. |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 4446 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4447 | void swap_buf_le16(u16 *buf, unsigned int buf_words) |
| 4448 | { |
| 4449 | #ifdef __BIG_ENDIAN |
| 4450 | unsigned int i; |
| 4451 | |
| 4452 | for (i = 0; i < buf_words; i++) |
| 4453 | buf[i] = le16_to_cpu(buf[i]); |
| 4454 | #endif /* __BIG_ENDIAN */ |
| 4455 | } |
| 4456 | |
Albert Lee | 6ae4cfb | 2005-08-12 14:15:34 +0800 | [diff] [blame] | 4457 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4458 | * ata_qc_new - Request an available ATA command, for queueing |
| 4459 | * @ap: Port associated with device @dev |
| 4460 | * @dev: Device from whom we request an available command structure |
| 4461 | * |
| 4462 | * LOCKING: |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4463 | * None. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4464 | */ |
| 4465 | |
| 4466 | static struct ata_queued_cmd *ata_qc_new(struct ata_port *ap) |
| 4467 | { |
| 4468 | struct ata_queued_cmd *qc = NULL; |
| 4469 | unsigned int i; |
| 4470 | |
Tejun Heo | e318049 | 2006-05-15 20:58:09 +0900 | [diff] [blame] | 4471 | /* no command while frozen */ |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 4472 | if (unlikely(ap->pflags & ATA_PFLAG_FROZEN)) |
Tejun Heo | e318049 | 2006-05-15 20:58:09 +0900 | [diff] [blame] | 4473 | return NULL; |
| 4474 | |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 4475 | /* the last tag is reserved for internal command. */ |
| 4476 | for (i = 0; i < ATA_MAX_QUEUE - 1; i++) |
Tejun Heo | 6cec4a3 | 2006-05-15 21:03:41 +0900 | [diff] [blame] | 4477 | if (!test_and_set_bit(i, &ap->qc_allocated)) { |
Tejun Heo | f69499f | 2006-05-15 20:58:03 +0900 | [diff] [blame] | 4478 | qc = __ata_qc_from_tag(ap, i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4479 | break; |
| 4480 | } |
| 4481 | |
| 4482 | if (qc) |
| 4483 | qc->tag = i; |
| 4484 | |
| 4485 | return qc; |
| 4486 | } |
| 4487 | |
| 4488 | /** |
| 4489 | * ata_qc_new_init - Request an available ATA command, and initialize it |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4490 | * @dev: Device from whom we request an available command structure |
| 4491 | * |
| 4492 | * LOCKING: |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4493 | * None. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4494 | */ |
| 4495 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 4496 | struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4497 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4498 | struct ata_port *ap = dev->link->ap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4499 | struct ata_queued_cmd *qc; |
| 4500 | |
| 4501 | qc = ata_qc_new(ap); |
| 4502 | if (qc) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4503 | qc->scsicmd = NULL; |
| 4504 | qc->ap = ap; |
| 4505 | qc->dev = dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4506 | |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 4507 | ata_qc_reinit(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4508 | } |
| 4509 | |
| 4510 | return qc; |
| 4511 | } |
| 4512 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4513 | /** |
| 4514 | * ata_qc_free - free unused ata_queued_cmd |
| 4515 | * @qc: Command to complete |
| 4516 | * |
| 4517 | * Designed to free unused ata_queued_cmd object |
| 4518 | * in case something prevents using it. |
| 4519 | * |
| 4520 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4521 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4522 | */ |
| 4523 | void ata_qc_free(struct ata_queued_cmd *qc) |
| 4524 | { |
Tejun Heo | 4ba946e | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 4525 | struct ata_port *ap = qc->ap; |
| 4526 | unsigned int tag; |
| 4527 | |
Tejun Heo | a4631474 | 2006-02-11 19:11:13 +0900 | [diff] [blame] | 4528 | WARN_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4529 | |
Tejun Heo | 4ba946e | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 4530 | qc->flags = 0; |
| 4531 | tag = qc->tag; |
| 4532 | if (likely(ata_tag_valid(tag))) { |
Tejun Heo | 4ba946e | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 4533 | qc->tag = ATA_TAG_POISON; |
Tejun Heo | 6cec4a3 | 2006-05-15 21:03:41 +0900 | [diff] [blame] | 4534 | clear_bit(tag, &ap->qc_allocated); |
Tejun Heo | 4ba946e | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 4535 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4536 | } |
| 4537 | |
Tejun Heo | 7601442 | 2006-02-11 15:13:49 +0900 | [diff] [blame] | 4538 | void __ata_qc_complete(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4539 | { |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4540 | struct ata_port *ap = qc->ap; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4541 | struct ata_link *link = qc->dev->link; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4542 | |
Tejun Heo | a4631474 | 2006-02-11 19:11:13 +0900 | [diff] [blame] | 4543 | WARN_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ |
| 4544 | WARN_ON(!(qc->flags & ATA_QCFLAG_ACTIVE)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4545 | |
| 4546 | if (likely(qc->flags & ATA_QCFLAG_DMAMAP)) |
| 4547 | ata_sg_clean(qc); |
| 4548 | |
Tejun Heo | 7401abf | 2006-05-15 20:57:32 +0900 | [diff] [blame] | 4549 | /* command should be marked inactive atomically with qc completion */ |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 4550 | if (qc->tf.protocol == ATA_PROT_NCQ) { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4551 | link->sactive &= ~(1 << qc->tag); |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 4552 | if (!link->sactive) |
| 4553 | ap->nr_active_links--; |
| 4554 | } else { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4555 | link->active_tag = ATA_TAG_POISON; |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 4556 | ap->nr_active_links--; |
| 4557 | } |
| 4558 | |
| 4559 | /* clear exclusive status */ |
| 4560 | if (unlikely(qc->flags & ATA_QCFLAG_CLEAR_EXCL && |
| 4561 | ap->excl_link == link)) |
| 4562 | ap->excl_link = NULL; |
Tejun Heo | 7401abf | 2006-05-15 20:57:32 +0900 | [diff] [blame] | 4563 | |
Albert Lee | 3f3791d | 2005-08-16 14:25:38 +0800 | [diff] [blame] | 4564 | /* atapi: mark qc as inactive to prevent the interrupt handler |
| 4565 | * from completing the command twice later, before the error handler |
| 4566 | * is called. (when rc != 0 and atapi request sense is needed) |
| 4567 | */ |
| 4568 | qc->flags &= ~ATA_QCFLAG_ACTIVE; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4569 | ap->qc_active &= ~(1 << qc->tag); |
Albert Lee | 3f3791d | 2005-08-16 14:25:38 +0800 | [diff] [blame] | 4570 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4571 | /* call completion callback */ |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 4572 | qc->complete_fn(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4573 | } |
| 4574 | |
Tejun Heo | 39599a5 | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 4575 | static void fill_result_tf(struct ata_queued_cmd *qc) |
| 4576 | { |
| 4577 | struct ata_port *ap = qc->ap; |
| 4578 | |
Tejun Heo | 39599a5 | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 4579 | qc->result_tf.flags = qc->tf.flags; |
Tejun Heo | 22183bf | 2008-04-07 22:47:20 +0900 | [diff] [blame] | 4580 | ap->ops->qc_fill_rtf(qc); |
Tejun Heo | 39599a5 | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 4581 | } |
| 4582 | |
Tejun Heo | 00115e0 | 2007-11-27 19:28:58 +0900 | [diff] [blame] | 4583 | static void ata_verify_xfer(struct ata_queued_cmd *qc) |
| 4584 | { |
| 4585 | struct ata_device *dev = qc->dev; |
| 4586 | |
| 4587 | if (ata_tag_internal(qc->tag)) |
| 4588 | return; |
| 4589 | |
| 4590 | if (ata_is_nodata(qc->tf.protocol)) |
| 4591 | return; |
| 4592 | |
| 4593 | if ((dev->mwdma_mask || dev->udma_mask) && ata_is_pio(qc->tf.protocol)) |
| 4594 | return; |
| 4595 | |
| 4596 | dev->flags &= ~ATA_DFLAG_DUBIOUS_XFER; |
| 4597 | } |
| 4598 | |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 4599 | /** |
| 4600 | * ata_qc_complete - Complete an active ATA command |
| 4601 | * @qc: Command to complete |
| 4602 | * @err_mask: ATA Status register contents |
| 4603 | * |
| 4604 | * Indicate to the mid and upper layers that an ATA |
| 4605 | * command has completed, with either an ok or not-ok status. |
| 4606 | * |
| 4607 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4608 | * spin_lock_irqsave(host lock) |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 4609 | */ |
| 4610 | void ata_qc_complete(struct ata_queued_cmd *qc) |
| 4611 | { |
| 4612 | struct ata_port *ap = qc->ap; |
| 4613 | |
| 4614 | /* XXX: New EH and old EH use different mechanisms to |
| 4615 | * synchronize EH with regular execution path. |
| 4616 | * |
| 4617 | * In new EH, a failed qc is marked with ATA_QCFLAG_FAILED. |
| 4618 | * Normal execution path is responsible for not accessing a |
| 4619 | * failed qc. libata core enforces the rule by returning NULL |
| 4620 | * from ata_qc_from_tag() for failed qcs. |
| 4621 | * |
| 4622 | * Old EH depends on ata_qc_complete() nullifying completion |
| 4623 | * requests if ATA_QCFLAG_EH_SCHEDULED is set. Old EH does |
| 4624 | * not synchronize with interrupt handler. Only PIO task is |
| 4625 | * taken care of. |
| 4626 | */ |
| 4627 | if (ap->ops->error_handler) { |
Tejun Heo | 4dbfa39 | 2007-10-25 18:22:44 +0900 | [diff] [blame] | 4628 | struct ata_device *dev = qc->dev; |
| 4629 | struct ata_eh_info *ehi = &dev->link->eh_info; |
| 4630 | |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 4631 | WARN_ON(ap->pflags & ATA_PFLAG_FROZEN); |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 4632 | |
| 4633 | if (unlikely(qc->err_mask)) |
| 4634 | qc->flags |= ATA_QCFLAG_FAILED; |
| 4635 | |
| 4636 | if (unlikely(qc->flags & ATA_QCFLAG_FAILED)) { |
| 4637 | if (!ata_tag_internal(qc->tag)) { |
| 4638 | /* always fill result TF for failed qc */ |
Tejun Heo | 39599a5 | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 4639 | fill_result_tf(qc); |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 4640 | ata_qc_schedule_eh(qc); |
| 4641 | return; |
| 4642 | } |
| 4643 | } |
| 4644 | |
| 4645 | /* read result TF if requested */ |
| 4646 | if (qc->flags & ATA_QCFLAG_RESULT_TF) |
Tejun Heo | 39599a5 | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 4647 | fill_result_tf(qc); |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 4648 | |
Tejun Heo | 4dbfa39 | 2007-10-25 18:22:44 +0900 | [diff] [blame] | 4649 | /* Some commands need post-processing after successful |
| 4650 | * completion. |
| 4651 | */ |
| 4652 | switch (qc->tf.command) { |
| 4653 | case ATA_CMD_SET_FEATURES: |
| 4654 | if (qc->tf.feature != SETFEATURES_WC_ON && |
| 4655 | qc->tf.feature != SETFEATURES_WC_OFF) |
| 4656 | break; |
| 4657 | /* fall through */ |
| 4658 | case ATA_CMD_INIT_DEV_PARAMS: /* CHS translation changed */ |
| 4659 | case ATA_CMD_SET_MULTI: /* multi_count changed */ |
| 4660 | /* revalidate device */ |
| 4661 | ehi->dev_action[dev->devno] |= ATA_EH_REVALIDATE; |
| 4662 | ata_port_schedule_eh(ap); |
| 4663 | break; |
Tejun Heo | 054a5fb | 2007-10-25 18:30:36 +0900 | [diff] [blame] | 4664 | |
| 4665 | case ATA_CMD_SLEEP: |
| 4666 | dev->flags |= ATA_DFLAG_SLEEPING; |
| 4667 | break; |
Tejun Heo | 4dbfa39 | 2007-10-25 18:22:44 +0900 | [diff] [blame] | 4668 | } |
| 4669 | |
Tejun Heo | 00115e0 | 2007-11-27 19:28:58 +0900 | [diff] [blame] | 4670 | if (unlikely(dev->flags & ATA_DFLAG_DUBIOUS_XFER)) |
| 4671 | ata_verify_xfer(qc); |
| 4672 | |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 4673 | __ata_qc_complete(qc); |
| 4674 | } else { |
| 4675 | if (qc->flags & ATA_QCFLAG_EH_SCHEDULED) |
| 4676 | return; |
| 4677 | |
| 4678 | /* read result TF if failed or requested */ |
| 4679 | if (qc->err_mask || qc->flags & ATA_QCFLAG_RESULT_TF) |
Tejun Heo | 39599a5 | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 4680 | fill_result_tf(qc); |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 4681 | |
| 4682 | __ata_qc_complete(qc); |
| 4683 | } |
| 4684 | } |
| 4685 | |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4686 | /** |
| 4687 | * ata_qc_complete_multiple - Complete multiple qcs successfully |
| 4688 | * @ap: port in question |
| 4689 | * @qc_active: new qc_active mask |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4690 | * |
| 4691 | * Complete in-flight commands. This functions is meant to be |
| 4692 | * called from low-level driver's interrupt routine to complete |
| 4693 | * requests normally. ap->qc_active and @qc_active is compared |
| 4694 | * and commands are completed accordingly. |
| 4695 | * |
| 4696 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4697 | * spin_lock_irqsave(host lock) |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4698 | * |
| 4699 | * RETURNS: |
| 4700 | * Number of completed commands on success, -errno otherwise. |
| 4701 | */ |
Tejun Heo | 79f97da | 2008-04-07 22:47:20 +0900 | [diff] [blame] | 4702 | int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active) |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4703 | { |
| 4704 | int nr_done = 0; |
| 4705 | u32 done_mask; |
| 4706 | int i; |
| 4707 | |
| 4708 | done_mask = ap->qc_active ^ qc_active; |
| 4709 | |
| 4710 | if (unlikely(done_mask & qc_active)) { |
| 4711 | ata_port_printk(ap, KERN_ERR, "illegal qc_active transition " |
| 4712 | "(%08x->%08x)\n", ap->qc_active, qc_active); |
| 4713 | return -EINVAL; |
| 4714 | } |
| 4715 | |
| 4716 | for (i = 0; i < ATA_MAX_QUEUE; i++) { |
| 4717 | struct ata_queued_cmd *qc; |
| 4718 | |
| 4719 | if (!(done_mask & (1 << i))) |
| 4720 | continue; |
| 4721 | |
| 4722 | if ((qc = ata_qc_from_tag(ap, i))) { |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4723 | ata_qc_complete(qc); |
| 4724 | nr_done++; |
| 4725 | } |
| 4726 | } |
| 4727 | |
| 4728 | return nr_done; |
| 4729 | } |
| 4730 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4731 | /** |
| 4732 | * ata_qc_issue - issue taskfile to device |
| 4733 | * @qc: command to issue to device |
| 4734 | * |
| 4735 | * Prepare an ATA command to submission to device. |
| 4736 | * This includes mapping the data into a DMA-able |
| 4737 | * area, filling in the S/G table, and finally |
| 4738 | * writing the taskfile to hardware, starting the command. |
| 4739 | * |
| 4740 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4741 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4742 | */ |
Tejun Heo | 8e0e694 | 2006-03-31 20:41:11 +0900 | [diff] [blame] | 4743 | void ata_qc_issue(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4744 | { |
| 4745 | struct ata_port *ap = qc->ap; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4746 | struct ata_link *link = qc->dev->link; |
Tejun Heo | 405e66b | 2007-11-27 19:28:53 +0900 | [diff] [blame] | 4747 | u8 prot = qc->tf.protocol; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4748 | |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4749 | /* Make sure only one non-NCQ command is outstanding. The |
| 4750 | * check is skipped for old EH because it reuses active qc to |
| 4751 | * request ATAPI sense. |
| 4752 | */ |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4753 | WARN_ON(ap->ops->error_handler && ata_tag_valid(link->active_tag)); |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4754 | |
Tejun Heo | 1973a02 | 2007-12-05 10:36:13 +0900 | [diff] [blame] | 4755 | if (ata_is_ncq(prot)) { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4756 | WARN_ON(link->sactive & (1 << qc->tag)); |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 4757 | |
| 4758 | if (!link->sactive) |
| 4759 | ap->nr_active_links++; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4760 | link->sactive |= 1 << qc->tag; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4761 | } else { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4762 | WARN_ON(link->sactive); |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 4763 | |
| 4764 | ap->nr_active_links++; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4765 | link->active_tag = qc->tag; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4766 | } |
| 4767 | |
Tejun Heo | e4a70e7 | 2006-03-31 20:36:47 +0900 | [diff] [blame] | 4768 | qc->flags |= ATA_QCFLAG_ACTIVE; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4769 | ap->qc_active |= 1 << qc->tag; |
Tejun Heo | e4a70e7 | 2006-03-31 20:36:47 +0900 | [diff] [blame] | 4770 | |
Tejun Heo | f92a263 | 2007-12-05 16:43:10 +0900 | [diff] [blame] | 4771 | /* We guarantee to LLDs that they will have at least one |
| 4772 | * non-zero sg if the command is a data command. |
| 4773 | */ |
Tejun Heo | ff2aeb1 | 2007-12-05 16:43:11 +0900 | [diff] [blame] | 4774 | BUG_ON(ata_is_data(prot) && (!qc->sg || !qc->n_elem || !qc->nbytes)); |
Tejun Heo | f92a263 | 2007-12-05 16:43:10 +0900 | [diff] [blame] | 4775 | |
Tejun Heo | 405e66b | 2007-11-27 19:28:53 +0900 | [diff] [blame] | 4776 | if (ata_is_dma(prot) || (ata_is_pio(prot) && |
Tejun Heo | f92a263 | 2007-12-05 16:43:10 +0900 | [diff] [blame] | 4777 | (ap->flags & ATA_FLAG_PIO_DMA))) |
Tejun Heo | 001102d | 2007-12-05 16:43:09 +0900 | [diff] [blame] | 4778 | if (ata_sg_setup(qc)) |
| 4779 | goto sg_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4780 | |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 4781 | /* if device is sleeping, schedule reset and abort the link */ |
Tejun Heo | 054a5fb | 2007-10-25 18:30:36 +0900 | [diff] [blame] | 4782 | if (unlikely(qc->dev->flags & ATA_DFLAG_SLEEPING)) { |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 4783 | link->eh_info.action |= ATA_EH_RESET; |
Tejun Heo | 054a5fb | 2007-10-25 18:30:36 +0900 | [diff] [blame] | 4784 | ata_ehi_push_desc(&link->eh_info, "waking up from sleep"); |
| 4785 | ata_link_abort(link); |
| 4786 | return; |
| 4787 | } |
| 4788 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4789 | ap->ops->qc_prep(qc); |
| 4790 | |
Tejun Heo | 8e0e694 | 2006-03-31 20:41:11 +0900 | [diff] [blame] | 4791 | qc->err_mask |= ap->ops->qc_issue(qc); |
| 4792 | if (unlikely(qc->err_mask)) |
| 4793 | goto err; |
| 4794 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4795 | |
Tejun Heo | 8e436af | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 4796 | sg_err: |
Tejun Heo | 8e0e694 | 2006-03-31 20:41:11 +0900 | [diff] [blame] | 4797 | qc->err_mask |= AC_ERR_SYSTEM; |
| 4798 | err: |
| 4799 | ata_qc_complete(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4800 | } |
| 4801 | |
| 4802 | /** |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4803 | * sata_scr_valid - test whether SCRs are accessible |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4804 | * @link: ATA link to test SCR accessibility for |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4805 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4806 | * Test whether SCRs are accessible for @link. |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4807 | * |
| 4808 | * LOCKING: |
| 4809 | * None. |
| 4810 | * |
| 4811 | * RETURNS: |
| 4812 | * 1 if SCRs are accessible, 0 otherwise. |
| 4813 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4814 | int sata_scr_valid(struct ata_link *link) |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4815 | { |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4816 | struct ata_port *ap = link->ap; |
| 4817 | |
Tejun Heo | a16abc0 | 2007-05-21 18:33:47 +0200 | [diff] [blame] | 4818 | return (ap->flags & ATA_FLAG_SATA) && ap->ops->scr_read; |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4819 | } |
| 4820 | |
| 4821 | /** |
| 4822 | * sata_scr_read - read SCR register of the specified port |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4823 | * @link: ATA link to read SCR for |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4824 | * @reg: SCR to read |
| 4825 | * @val: Place to store read value |
| 4826 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4827 | * Read SCR register @reg of @link into *@val. This function is |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 4828 | * guaranteed to succeed if @link is ap->link, the cable type of |
| 4829 | * the port is SATA and the port implements ->scr_read. |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4830 | * |
| 4831 | * LOCKING: |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 4832 | * None if @link is ap->link. Kernel thread context otherwise. |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4833 | * |
| 4834 | * RETURNS: |
| 4835 | * 0 on success, negative errno on failure. |
| 4836 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4837 | int sata_scr_read(struct ata_link *link, int reg, u32 *val) |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4838 | { |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 4839 | if (ata_is_host_link(link)) { |
| 4840 | struct ata_port *ap = link->ap; |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4841 | |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 4842 | if (sata_scr_valid(link)) |
| 4843 | return ap->ops->scr_read(ap, reg, val); |
| 4844 | return -EOPNOTSUPP; |
| 4845 | } |
| 4846 | |
| 4847 | return sata_pmp_scr_read(link, reg, val); |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4848 | } |
| 4849 | |
| 4850 | /** |
| 4851 | * sata_scr_write - write SCR register of the specified port |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4852 | * @link: ATA link to write SCR for |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4853 | * @reg: SCR to write |
| 4854 | * @val: value to write |
| 4855 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4856 | * Write @val to SCR register @reg of @link. This function is |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 4857 | * guaranteed to succeed if @link is ap->link, the cable type of |
| 4858 | * the port is SATA and the port implements ->scr_read. |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4859 | * |
| 4860 | * LOCKING: |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 4861 | * None if @link is ap->link. Kernel thread context otherwise. |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4862 | * |
| 4863 | * RETURNS: |
| 4864 | * 0 on success, negative errno on failure. |
| 4865 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4866 | int sata_scr_write(struct ata_link *link, int reg, u32 val) |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4867 | { |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 4868 | if (ata_is_host_link(link)) { |
| 4869 | struct ata_port *ap = link->ap; |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4870 | |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 4871 | if (sata_scr_valid(link)) |
| 4872 | return ap->ops->scr_write(ap, reg, val); |
| 4873 | return -EOPNOTSUPP; |
| 4874 | } |
| 4875 | |
| 4876 | return sata_pmp_scr_write(link, reg, val); |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4877 | } |
| 4878 | |
| 4879 | /** |
| 4880 | * sata_scr_write_flush - write SCR register of the specified port and flush |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4881 | * @link: ATA link to write SCR for |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4882 | * @reg: SCR to write |
| 4883 | * @val: value to write |
| 4884 | * |
| 4885 | * This function is identical to sata_scr_write() except that this |
| 4886 | * function performs flush after writing to the register. |
| 4887 | * |
| 4888 | * LOCKING: |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 4889 | * None if @link is ap->link. Kernel thread context otherwise. |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4890 | * |
| 4891 | * RETURNS: |
| 4892 | * 0 on success, negative errno on failure. |
| 4893 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4894 | int sata_scr_write_flush(struct ata_link *link, int reg, u32 val) |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4895 | { |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 4896 | if (ata_is_host_link(link)) { |
| 4897 | struct ata_port *ap = link->ap; |
| 4898 | int rc; |
Tejun Heo | da3dbb1 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 4899 | |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 4900 | if (sata_scr_valid(link)) { |
| 4901 | rc = ap->ops->scr_write(ap, reg, val); |
| 4902 | if (rc == 0) |
| 4903 | rc = ap->ops->scr_read(ap, reg, &val); |
| 4904 | return rc; |
| 4905 | } |
| 4906 | return -EOPNOTSUPP; |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4907 | } |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 4908 | |
| 4909 | return sata_pmp_scr_write(link, reg, val); |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4910 | } |
| 4911 | |
| 4912 | /** |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4913 | * ata_link_online - test whether the given link is online |
| 4914 | * @link: ATA link to test |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4915 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4916 | * Test whether @link is online. Note that this function returns |
| 4917 | * 0 if online status of @link cannot be obtained, so |
| 4918 | * ata_link_online(link) != !ata_link_offline(link). |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4919 | * |
| 4920 | * LOCKING: |
| 4921 | * None. |
| 4922 | * |
| 4923 | * RETURNS: |
| 4924 | * 1 if the port online status is available and online. |
| 4925 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4926 | int ata_link_online(struct ata_link *link) |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4927 | { |
| 4928 | u32 sstatus; |
| 4929 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4930 | if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0 && |
| 4931 | (sstatus & 0xf) == 0x3) |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4932 | return 1; |
| 4933 | return 0; |
| 4934 | } |
| 4935 | |
| 4936 | /** |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4937 | * ata_link_offline - test whether the given link is offline |
| 4938 | * @link: ATA link to test |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4939 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4940 | * Test whether @link is offline. Note that this function |
| 4941 | * returns 0 if offline status of @link cannot be obtained, so |
| 4942 | * ata_link_online(link) != !ata_link_offline(link). |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4943 | * |
| 4944 | * LOCKING: |
| 4945 | * None. |
| 4946 | * |
| 4947 | * RETURNS: |
| 4948 | * 1 if the port offline status is available and offline. |
| 4949 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4950 | int ata_link_offline(struct ata_link *link) |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4951 | { |
| 4952 | u32 sstatus; |
| 4953 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4954 | if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0 && |
| 4955 | (sstatus & 0xf) != 0x3) |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4956 | return 1; |
| 4957 | return 0; |
| 4958 | } |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 4959 | |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 4960 | #ifdef CONFIG_PM |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4961 | static int ata_host_request_pm(struct ata_host *host, pm_message_t mesg, |
| 4962 | unsigned int action, unsigned int ehi_flags, |
| 4963 | int wait) |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 4964 | { |
| 4965 | unsigned long flags; |
| 4966 | int i, rc; |
| 4967 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4968 | for (i = 0; i < host->n_ports; i++) { |
| 4969 | struct ata_port *ap = host->ports[i]; |
Tejun Heo | e3667eb | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 4970 | struct ata_link *link; |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 4971 | |
| 4972 | /* Previous resume operation might still be in |
| 4973 | * progress. Wait for PM_PENDING to clear. |
| 4974 | */ |
| 4975 | if (ap->pflags & ATA_PFLAG_PM_PENDING) { |
| 4976 | ata_port_wait_eh(ap); |
| 4977 | WARN_ON(ap->pflags & ATA_PFLAG_PM_PENDING); |
| 4978 | } |
| 4979 | |
| 4980 | /* request PM ops to EH */ |
| 4981 | spin_lock_irqsave(ap->lock, flags); |
| 4982 | |
| 4983 | ap->pm_mesg = mesg; |
| 4984 | if (wait) { |
| 4985 | rc = 0; |
| 4986 | ap->pm_result = &rc; |
| 4987 | } |
| 4988 | |
| 4989 | ap->pflags |= ATA_PFLAG_PM_PENDING; |
Tejun Heo | e3667eb | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 4990 | __ata_port_for_each_link(link, ap) { |
| 4991 | link->eh_info.action |= action; |
| 4992 | link->eh_info.flags |= ehi_flags; |
| 4993 | } |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 4994 | |
| 4995 | ata_port_schedule_eh(ap); |
| 4996 | |
| 4997 | spin_unlock_irqrestore(ap->lock, flags); |
| 4998 | |
| 4999 | /* wait and check result */ |
| 5000 | if (wait) { |
| 5001 | ata_port_wait_eh(ap); |
| 5002 | WARN_ON(ap->pflags & ATA_PFLAG_PM_PENDING); |
| 5003 | if (rc) |
| 5004 | return rc; |
| 5005 | } |
| 5006 | } |
| 5007 | |
| 5008 | return 0; |
| 5009 | } |
| 5010 | |
| 5011 | /** |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5012 | * ata_host_suspend - suspend host |
| 5013 | * @host: host to suspend |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5014 | * @mesg: PM message |
| 5015 | * |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5016 | * Suspend @host. Actual operation is performed by EH. This |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5017 | * function requests EH to perform PM operations and waits for EH |
| 5018 | * to finish. |
| 5019 | * |
| 5020 | * LOCKING: |
| 5021 | * Kernel thread context (may sleep). |
| 5022 | * |
| 5023 | * RETURNS: |
| 5024 | * 0 on success, -errno on failure. |
| 5025 | */ |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5026 | int ata_host_suspend(struct ata_host *host, pm_message_t mesg) |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5027 | { |
Tejun Heo | 9666f40 | 2007-05-04 21:27:47 +0200 | [diff] [blame] | 5028 | int rc; |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5029 | |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 5030 | /* |
| 5031 | * disable link pm on all ports before requesting |
| 5032 | * any pm activity |
| 5033 | */ |
| 5034 | ata_lpm_enable(host); |
| 5035 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5036 | rc = ata_host_request_pm(host, mesg, 0, ATA_EHI_QUIET, 1); |
Jeff Garzik | 72ad6ec | 2008-02-25 17:31:10 -0500 | [diff] [blame] | 5037 | if (rc == 0) |
| 5038 | host->dev->power.power_state = mesg; |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5039 | return rc; |
| 5040 | } |
| 5041 | |
| 5042 | /** |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5043 | * ata_host_resume - resume host |
| 5044 | * @host: host to resume |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5045 | * |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5046 | * Resume @host. Actual operation is performed by EH. This |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5047 | * function requests EH to perform PM operations and returns. |
| 5048 | * Note that all resume operations are performed parallely. |
| 5049 | * |
| 5050 | * LOCKING: |
| 5051 | * Kernel thread context (may sleep). |
| 5052 | */ |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5053 | void ata_host_resume(struct ata_host *host) |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5054 | { |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 5055 | ata_host_request_pm(host, PMSG_ON, ATA_EH_RESET, |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5056 | ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, 0); |
Jeff Garzik | 72ad6ec | 2008-02-25 17:31:10 -0500 | [diff] [blame] | 5057 | host->dev->power.power_state = PMSG_ON; |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 5058 | |
| 5059 | /* reenable link pm */ |
| 5060 | ata_lpm_disable(host); |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5061 | } |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 5062 | #endif |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5063 | |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 5064 | /** |
| 5065 | * ata_port_start - Set port up for dma. |
| 5066 | * @ap: Port to initialize |
| 5067 | * |
| 5068 | * Called just after data structures for each port are |
| 5069 | * initialized. Allocates space for PRD table. |
| 5070 | * |
| 5071 | * May be used as the port_start() entry in ata_port_operations. |
| 5072 | * |
| 5073 | * LOCKING: |
| 5074 | * Inherited from caller. |
| 5075 | */ |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 5076 | int ata_port_start(struct ata_port *ap) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5077 | { |
Brian King | 2f1f610 | 2006-03-23 17:30:15 -0600 | [diff] [blame] | 5078 | struct device *dev = ap->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5079 | |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 5080 | ap->prd = dmam_alloc_coherent(dev, ATA_PRD_TBL_SZ, &ap->prd_dma, |
| 5081 | GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5082 | if (!ap->prd) |
| 5083 | return -ENOMEM; |
| 5084 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5085 | return 0; |
| 5086 | } |
| 5087 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 5088 | /** |
Tejun Heo | 3ef3b43 | 2006-05-31 18:27:30 +0900 | [diff] [blame] | 5089 | * ata_dev_init - Initialize an ata_device structure |
| 5090 | * @dev: Device structure to initialize |
| 5091 | * |
| 5092 | * Initialize @dev in preparation for probing. |
| 5093 | * |
| 5094 | * LOCKING: |
| 5095 | * Inherited from caller. |
| 5096 | */ |
| 5097 | void ata_dev_init(struct ata_device *dev) |
| 5098 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 5099 | struct ata_link *link = dev->link; |
| 5100 | struct ata_port *ap = link->ap; |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 5101 | unsigned long flags; |
Tejun Heo | 3ef3b43 | 2006-05-31 18:27:30 +0900 | [diff] [blame] | 5102 | |
Tejun Heo | 5a04bf4 | 2006-05-31 18:27:38 +0900 | [diff] [blame] | 5103 | /* SATA spd limit is bound to the first device */ |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 5104 | link->sata_spd_limit = link->hw_sata_spd_limit; |
| 5105 | link->sata_spd = 0; |
Tejun Heo | 5a04bf4 | 2006-05-31 18:27:38 +0900 | [diff] [blame] | 5106 | |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 5107 | /* High bits of dev->flags are used to record warm plug |
| 5108 | * requests which occur asynchronously. Synchronize using |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5109 | * host lock. |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 5110 | */ |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 5111 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 5112 | dev->flags &= ~ATA_DFLAG_INIT_MASK; |
Tejun Heo | 3dcc323 | 2007-09-03 12:20:11 +0900 | [diff] [blame] | 5113 | dev->horkage = 0; |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 5114 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 5115 | |
| 5116 | memset((void *)dev + ATA_DEVICE_CLEAR_OFFSET, 0, |
| 5117 | sizeof(*dev) - ATA_DEVICE_CLEAR_OFFSET); |
Tejun Heo | 3ef3b43 | 2006-05-31 18:27:30 +0900 | [diff] [blame] | 5118 | dev->pio_mask = UINT_MAX; |
| 5119 | dev->mwdma_mask = UINT_MAX; |
| 5120 | dev->udma_mask = UINT_MAX; |
| 5121 | } |
| 5122 | |
| 5123 | /** |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5124 | * ata_link_init - Initialize an ata_link structure |
| 5125 | * @ap: ATA port link is attached to |
| 5126 | * @link: Link structure to initialize |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5127 | * @pmp: Port multiplier port number |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5128 | * |
| 5129 | * Initialize @link. |
| 5130 | * |
| 5131 | * LOCKING: |
| 5132 | * Kernel thread context (may sleep) |
| 5133 | */ |
Tejun Heo | fb7fd61 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 5134 | void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp) |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5135 | { |
| 5136 | int i; |
| 5137 | |
| 5138 | /* clear everything except for devices */ |
| 5139 | memset(link, 0, offsetof(struct ata_link, device[0])); |
| 5140 | |
| 5141 | link->ap = ap; |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5142 | link->pmp = pmp; |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5143 | link->active_tag = ATA_TAG_POISON; |
| 5144 | link->hw_sata_spd_limit = UINT_MAX; |
| 5145 | |
| 5146 | /* can't use iterator, ap isn't initialized yet */ |
| 5147 | for (i = 0; i < ATA_MAX_DEVICES; i++) { |
| 5148 | struct ata_device *dev = &link->device[i]; |
| 5149 | |
| 5150 | dev->link = link; |
| 5151 | dev->devno = dev - link->device; |
| 5152 | ata_dev_init(dev); |
| 5153 | } |
| 5154 | } |
| 5155 | |
| 5156 | /** |
| 5157 | * sata_link_init_spd - Initialize link->sata_spd_limit |
| 5158 | * @link: Link to configure sata_spd_limit for |
| 5159 | * |
| 5160 | * Initialize @link->[hw_]sata_spd_limit to the currently |
| 5161 | * configured value. |
| 5162 | * |
| 5163 | * LOCKING: |
| 5164 | * Kernel thread context (may sleep). |
| 5165 | * |
| 5166 | * RETURNS: |
| 5167 | * 0 on success, -errno on failure. |
| 5168 | */ |
Tejun Heo | fb7fd61 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 5169 | int sata_link_init_spd(struct ata_link *link) |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5170 | { |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 5171 | u32 scontrol; |
| 5172 | u8 spd; |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5173 | int rc; |
| 5174 | |
| 5175 | rc = sata_scr_read(link, SCR_CONTROL, &scontrol); |
| 5176 | if (rc) |
| 5177 | return rc; |
| 5178 | |
| 5179 | spd = (scontrol >> 4) & 0xf; |
| 5180 | if (spd) |
| 5181 | link->hw_sata_spd_limit &= (1 << spd) - 1; |
| 5182 | |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 5183 | ata_force_spd_limit(link); |
| 5184 | |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5185 | link->sata_spd_limit = link->hw_sata_spd_limit; |
| 5186 | |
| 5187 | return 0; |
| 5188 | } |
| 5189 | |
| 5190 | /** |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5191 | * ata_port_alloc - allocate and initialize basic ATA port resources |
| 5192 | * @host: ATA host this allocated port belongs to |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5193 | * |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5194 | * Allocate and initialize basic ATA port resources. |
| 5195 | * |
| 5196 | * RETURNS: |
| 5197 | * Allocate ATA port on success, NULL on failure. |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 5198 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5199 | * LOCKING: |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5200 | * Inherited from calling layer (may sleep). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5201 | */ |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5202 | struct ata_port *ata_port_alloc(struct ata_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5203 | { |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5204 | struct ata_port *ap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5205 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5206 | DPRINTK("ENTER\n"); |
| 5207 | |
| 5208 | ap = kzalloc(sizeof(*ap), GFP_KERNEL); |
| 5209 | if (!ap) |
| 5210 | return NULL; |
| 5211 | |
Tejun Heo | f4d6d00 | 2007-05-01 11:50:15 +0200 | [diff] [blame] | 5212 | ap->pflags |= ATA_PFLAG_INITIALIZING; |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5213 | ap->lock = &host->lock; |
Tejun Heo | 198e0fe | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 5214 | ap->flags = ATA_FLAG_DISABLED; |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5215 | ap->print_id = -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5216 | ap->ctl = ATA_DEVCTL_OBS; |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5217 | ap->host = host; |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5218 | ap->dev = host->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5219 | ap->last_ctl = 0xFF; |
Borislav Petkov | bd5d825 | 2006-06-11 23:17:01 -0400 | [diff] [blame] | 5220 | |
| 5221 | #if defined(ATA_VERBOSE_DEBUG) |
| 5222 | /* turn on all debugging levels */ |
| 5223 | ap->msg_enable = 0x00FF; |
| 5224 | #elif defined(ATA_DEBUG) |
| 5225 | ap->msg_enable = ATA_MSG_DRV | ATA_MSG_INFO | ATA_MSG_CTL | ATA_MSG_WARN | ATA_MSG_ERR; |
Tejun Heo | 8857455 | 2006-06-25 20:00:35 +0900 | [diff] [blame] | 5226 | #else |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 5227 | ap->msg_enable = ATA_MSG_DRV | ATA_MSG_ERR | ATA_MSG_WARN; |
Borislav Petkov | bd5d825 | 2006-06-11 23:17:01 -0400 | [diff] [blame] | 5228 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5229 | |
Tejun Heo | 127102a | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 5230 | #ifdef CONFIG_ATA_SFF |
Jeff Garzik | 442eacc | 2007-12-19 04:25:10 -0500 | [diff] [blame] | 5231 | INIT_DELAYED_WORK(&ap->port_task, ata_pio_task); |
Tejun Heo | 127102a | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 5232 | #endif |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 5233 | INIT_DELAYED_WORK(&ap->hotplug_task, ata_scsi_hotplug); |
| 5234 | INIT_WORK(&ap->scsi_rescan_task, ata_scsi_dev_rescan); |
Tejun Heo | a72ec4c | 2006-01-23 13:09:37 +0900 | [diff] [blame] | 5235 | INIT_LIST_HEAD(&ap->eh_done_q); |
Tejun Heo | c6cf9e9 | 2006-05-31 18:27:27 +0900 | [diff] [blame] | 5236 | init_waitqueue_head(&ap->eh_wait_q); |
Tejun Heo | 5ddf24c | 2007-07-16 14:29:41 +0900 | [diff] [blame] | 5237 | init_timer_deferrable(&ap->fastdrain_timer); |
| 5238 | ap->fastdrain_timer.function = ata_eh_fastdrain_timerfn; |
| 5239 | ap->fastdrain_timer.data = (unsigned long)ap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5240 | |
Tejun Heo | 838df62 | 2006-05-15 20:57:44 +0900 | [diff] [blame] | 5241 | ap->cbl = ATA_CBL_NONE; |
Tejun Heo | 838df62 | 2006-05-15 20:57:44 +0900 | [diff] [blame] | 5242 | |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5243 | ata_link_init(ap, &ap->link, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5244 | |
| 5245 | #ifdef ATA_IRQ_TRAP |
| 5246 | ap->stats.unhandled_irq = 1; |
| 5247 | ap->stats.idle_irq = 1; |
| 5248 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5249 | return ap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5250 | } |
| 5251 | |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 5252 | static void ata_host_release(struct device *gendev, void *res) |
| 5253 | { |
| 5254 | struct ata_host *host = dev_get_drvdata(gendev); |
| 5255 | int i; |
| 5256 | |
| 5257 | for (i = 0; i < host->n_ports; i++) { |
| 5258 | struct ata_port *ap = host->ports[i]; |
| 5259 | |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5260 | if (!ap) |
| 5261 | continue; |
| 5262 | |
Tejun Heo | 4911487 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5263 | if (ap->scsi_host) |
Tejun Heo | 1aa506e | 2007-03-09 19:36:12 +0900 | [diff] [blame] | 5264 | scsi_host_put(ap->scsi_host); |
| 5265 | |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5266 | kfree(ap->pmp_link); |
Tejun Heo | 4911487 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5267 | kfree(ap); |
Tejun Heo | 1aa506e | 2007-03-09 19:36:12 +0900 | [diff] [blame] | 5268 | host->ports[i] = NULL; |
| 5269 | } |
| 5270 | |
Tejun Heo | 1aa56cc | 2007-02-27 22:33:21 +0900 | [diff] [blame] | 5271 | dev_set_drvdata(gendev, NULL); |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 5272 | } |
| 5273 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5274 | /** |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5275 | * ata_host_alloc - allocate and init basic ATA host resources |
| 5276 | * @dev: generic device this host is associated with |
| 5277 | * @max_ports: maximum number of ATA ports associated with this host |
| 5278 | * |
| 5279 | * Allocate and initialize basic ATA host resources. LLD calls |
| 5280 | * this function to allocate a host, initializes it fully and |
| 5281 | * attaches it using ata_host_register(). |
| 5282 | * |
| 5283 | * @max_ports ports are allocated and host->n_ports is |
| 5284 | * initialized to @max_ports. The caller is allowed to decrease |
| 5285 | * host->n_ports before calling ata_host_register(). The unused |
| 5286 | * ports will be automatically freed on registration. |
| 5287 | * |
| 5288 | * RETURNS: |
| 5289 | * Allocate ATA host on success, NULL on failure. |
| 5290 | * |
| 5291 | * LOCKING: |
| 5292 | * Inherited from calling layer (may sleep). |
| 5293 | */ |
| 5294 | struct ata_host *ata_host_alloc(struct device *dev, int max_ports) |
| 5295 | { |
| 5296 | struct ata_host *host; |
| 5297 | size_t sz; |
| 5298 | int i; |
| 5299 | |
| 5300 | DPRINTK("ENTER\n"); |
| 5301 | |
| 5302 | if (!devres_open_group(dev, NULL, GFP_KERNEL)) |
| 5303 | return NULL; |
| 5304 | |
| 5305 | /* alloc a container for our list of ATA ports (buses) */ |
| 5306 | sz = sizeof(struct ata_host) + (max_ports + 1) * sizeof(void *); |
| 5307 | /* alloc a container for our list of ATA ports (buses) */ |
| 5308 | host = devres_alloc(ata_host_release, sz, GFP_KERNEL); |
| 5309 | if (!host) |
| 5310 | goto err_out; |
| 5311 | |
| 5312 | devres_add(dev, host); |
| 5313 | dev_set_drvdata(dev, host); |
| 5314 | |
| 5315 | spin_lock_init(&host->lock); |
| 5316 | host->dev = dev; |
| 5317 | host->n_ports = max_ports; |
| 5318 | |
| 5319 | /* allocate ports bound to this host */ |
| 5320 | for (i = 0; i < max_ports; i++) { |
| 5321 | struct ata_port *ap; |
| 5322 | |
| 5323 | ap = ata_port_alloc(host); |
| 5324 | if (!ap) |
| 5325 | goto err_out; |
| 5326 | |
| 5327 | ap->port_no = i; |
| 5328 | host->ports[i] = ap; |
| 5329 | } |
| 5330 | |
| 5331 | devres_remove_group(dev, NULL); |
| 5332 | return host; |
| 5333 | |
| 5334 | err_out: |
| 5335 | devres_release_group(dev, NULL); |
| 5336 | return NULL; |
| 5337 | } |
| 5338 | |
| 5339 | /** |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5340 | * ata_host_alloc_pinfo - alloc host and init with port_info array |
| 5341 | * @dev: generic device this host is associated with |
| 5342 | * @ppi: array of ATA port_info to initialize host with |
| 5343 | * @n_ports: number of ATA ports attached to this host |
| 5344 | * |
| 5345 | * Allocate ATA host and initialize with info from @ppi. If NULL |
| 5346 | * terminated, @ppi may contain fewer entries than @n_ports. The |
| 5347 | * last entry will be used for the remaining ports. |
| 5348 | * |
| 5349 | * RETURNS: |
| 5350 | * Allocate ATA host on success, NULL on failure. |
| 5351 | * |
| 5352 | * LOCKING: |
| 5353 | * Inherited from calling layer (may sleep). |
| 5354 | */ |
| 5355 | struct ata_host *ata_host_alloc_pinfo(struct device *dev, |
| 5356 | const struct ata_port_info * const * ppi, |
| 5357 | int n_ports) |
| 5358 | { |
| 5359 | const struct ata_port_info *pi; |
| 5360 | struct ata_host *host; |
| 5361 | int i, j; |
| 5362 | |
| 5363 | host = ata_host_alloc(dev, n_ports); |
| 5364 | if (!host) |
| 5365 | return NULL; |
| 5366 | |
| 5367 | for (i = 0, j = 0, pi = NULL; i < host->n_ports; i++) { |
| 5368 | struct ata_port *ap = host->ports[i]; |
| 5369 | |
| 5370 | if (ppi[j]) |
| 5371 | pi = ppi[j++]; |
| 5372 | |
| 5373 | ap->pio_mask = pi->pio_mask; |
| 5374 | ap->mwdma_mask = pi->mwdma_mask; |
| 5375 | ap->udma_mask = pi->udma_mask; |
| 5376 | ap->flags |= pi->flags; |
Tejun Heo | 0c88758 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5377 | ap->link.flags |= pi->link_flags; |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5378 | ap->ops = pi->port_ops; |
| 5379 | |
| 5380 | if (!host->ops && (pi->port_ops != &ata_dummy_port_ops)) |
| 5381 | host->ops = pi->port_ops; |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5382 | } |
| 5383 | |
| 5384 | return host; |
| 5385 | } |
| 5386 | |
Tejun Heo | 32ebbc0 | 2007-11-08 13:09:00 +0900 | [diff] [blame] | 5387 | static void ata_host_stop(struct device *gendev, void *res) |
| 5388 | { |
| 5389 | struct ata_host *host = dev_get_drvdata(gendev); |
| 5390 | int i; |
| 5391 | |
| 5392 | WARN_ON(!(host->flags & ATA_HOST_STARTED)); |
| 5393 | |
| 5394 | for (i = 0; i < host->n_ports; i++) { |
| 5395 | struct ata_port *ap = host->ports[i]; |
| 5396 | |
| 5397 | if (ap->ops->port_stop) |
| 5398 | ap->ops->port_stop(ap); |
| 5399 | } |
| 5400 | |
| 5401 | if (host->ops->host_stop) |
| 5402 | host->ops->host_stop(host); |
| 5403 | } |
| 5404 | |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5405 | /** |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 5406 | * ata_finalize_port_ops - finalize ata_port_operations |
| 5407 | * @ops: ata_port_operations to finalize |
| 5408 | * |
| 5409 | * An ata_port_operations can inherit from another ops and that |
| 5410 | * ops can again inherit from another. This can go on as many |
| 5411 | * times as necessary as long as there is no loop in the |
| 5412 | * inheritance chain. |
| 5413 | * |
| 5414 | * Ops tables are finalized when the host is started. NULL or |
| 5415 | * unspecified entries are inherited from the closet ancestor |
| 5416 | * which has the method and the entry is populated with it. |
| 5417 | * After finalization, the ops table directly points to all the |
| 5418 | * methods and ->inherits is no longer necessary and cleared. |
| 5419 | * |
| 5420 | * Using ATA_OP_NULL, inheriting ops can force a method to NULL. |
| 5421 | * |
| 5422 | * LOCKING: |
| 5423 | * None. |
| 5424 | */ |
| 5425 | static void ata_finalize_port_ops(struct ata_port_operations *ops) |
| 5426 | { |
Pradeep Singh Rautela | 2da6765 | 2008-05-29 23:28:14 +0530 | [diff] [blame] | 5427 | static DEFINE_SPINLOCK(lock); |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 5428 | const struct ata_port_operations *cur; |
| 5429 | void **begin = (void **)ops; |
| 5430 | void **end = (void **)&ops->inherits; |
| 5431 | void **pp; |
| 5432 | |
| 5433 | if (!ops || !ops->inherits) |
| 5434 | return; |
| 5435 | |
| 5436 | spin_lock(&lock); |
| 5437 | |
| 5438 | for (cur = ops->inherits; cur; cur = cur->inherits) { |
| 5439 | void **inherit = (void **)cur; |
| 5440 | |
| 5441 | for (pp = begin; pp < end; pp++, inherit++) |
| 5442 | if (!*pp) |
| 5443 | *pp = *inherit; |
| 5444 | } |
| 5445 | |
| 5446 | for (pp = begin; pp < end; pp++) |
| 5447 | if (IS_ERR(*pp)) |
| 5448 | *pp = NULL; |
| 5449 | |
| 5450 | ops->inherits = NULL; |
| 5451 | |
| 5452 | spin_unlock(&lock); |
| 5453 | } |
| 5454 | |
| 5455 | /** |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5456 | * ata_host_start - start and freeze ports of an ATA host |
| 5457 | * @host: ATA host to start ports for |
| 5458 | * |
| 5459 | * Start and then freeze ports of @host. Started status is |
| 5460 | * recorded in host->flags, so this function can be called |
| 5461 | * multiple times. Ports are guaranteed to get started only |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5462 | * once. If host->ops isn't initialized yet, its set to the |
| 5463 | * first non-dummy port ops. |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5464 | * |
| 5465 | * LOCKING: |
| 5466 | * Inherited from calling layer (may sleep). |
| 5467 | * |
| 5468 | * RETURNS: |
| 5469 | * 0 if all ports are started successfully, -errno otherwise. |
| 5470 | */ |
| 5471 | int ata_host_start(struct ata_host *host) |
| 5472 | { |
Tejun Heo | 32ebbc0 | 2007-11-08 13:09:00 +0900 | [diff] [blame] | 5473 | int have_stop = 0; |
| 5474 | void *start_dr = NULL; |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5475 | int i, rc; |
| 5476 | |
| 5477 | if (host->flags & ATA_HOST_STARTED) |
| 5478 | return 0; |
| 5479 | |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 5480 | ata_finalize_port_ops(host->ops); |
| 5481 | |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5482 | for (i = 0; i < host->n_ports; i++) { |
| 5483 | struct ata_port *ap = host->ports[i]; |
| 5484 | |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 5485 | ata_finalize_port_ops(ap->ops); |
| 5486 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5487 | if (!host->ops && !ata_port_is_dummy(ap)) |
| 5488 | host->ops = ap->ops; |
| 5489 | |
Tejun Heo | 32ebbc0 | 2007-11-08 13:09:00 +0900 | [diff] [blame] | 5490 | if (ap->ops->port_stop) |
| 5491 | have_stop = 1; |
| 5492 | } |
| 5493 | |
| 5494 | if (host->ops->host_stop) |
| 5495 | have_stop = 1; |
| 5496 | |
| 5497 | if (have_stop) { |
| 5498 | start_dr = devres_alloc(ata_host_stop, 0, GFP_KERNEL); |
| 5499 | if (!start_dr) |
| 5500 | return -ENOMEM; |
| 5501 | } |
| 5502 | |
| 5503 | for (i = 0; i < host->n_ports; i++) { |
| 5504 | struct ata_port *ap = host->ports[i]; |
| 5505 | |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5506 | if (ap->ops->port_start) { |
| 5507 | rc = ap->ops->port_start(ap); |
| 5508 | if (rc) { |
Alan Cox | 0f9fe9b | 2007-11-30 15:23:16 +0000 | [diff] [blame] | 5509 | if (rc != -ENODEV) |
Andrew Morton | 0f75774 | 2008-01-10 14:33:09 -0800 | [diff] [blame] | 5510 | dev_printk(KERN_ERR, host->dev, |
| 5511 | "failed to start port %d " |
| 5512 | "(errno=%d)\n", i, rc); |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5513 | goto err_out; |
| 5514 | } |
| 5515 | } |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5516 | ata_eh_freeze_port(ap); |
| 5517 | } |
| 5518 | |
Tejun Heo | 32ebbc0 | 2007-11-08 13:09:00 +0900 | [diff] [blame] | 5519 | if (start_dr) |
| 5520 | devres_add(host->dev, start_dr); |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5521 | host->flags |= ATA_HOST_STARTED; |
| 5522 | return 0; |
| 5523 | |
| 5524 | err_out: |
| 5525 | while (--i >= 0) { |
| 5526 | struct ata_port *ap = host->ports[i]; |
| 5527 | |
| 5528 | if (ap->ops->port_stop) |
| 5529 | ap->ops->port_stop(ap); |
| 5530 | } |
Tejun Heo | 32ebbc0 | 2007-11-08 13:09:00 +0900 | [diff] [blame] | 5531 | devres_free(start_dr); |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5532 | return rc; |
| 5533 | } |
| 5534 | |
| 5535 | /** |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5536 | * ata_sas_host_init - Initialize a host struct |
| 5537 | * @host: host to initialize |
| 5538 | * @dev: device host is attached to |
| 5539 | * @flags: host flags |
| 5540 | * @ops: port_ops |
Brian King | b03732f | 2006-08-07 14:27:10 -0500 | [diff] [blame] | 5541 | * |
| 5542 | * LOCKING: |
| 5543 | * PCI/etc. bus probe sem. |
| 5544 | * |
| 5545 | */ |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5546 | /* KILLME - the only user left is ipr */ |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5547 | void ata_host_init(struct ata_host *host, struct device *dev, |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 5548 | unsigned long flags, struct ata_port_operations *ops) |
Brian King | b03732f | 2006-08-07 14:27:10 -0500 | [diff] [blame] | 5549 | { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5550 | spin_lock_init(&host->lock); |
| 5551 | host->dev = dev; |
| 5552 | host->flags = flags; |
| 5553 | host->ops = ops; |
Brian King | b03732f | 2006-08-07 14:27:10 -0500 | [diff] [blame] | 5554 | } |
| 5555 | |
| 5556 | /** |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5557 | * ata_host_register - register initialized ATA host |
| 5558 | * @host: ATA host to register |
| 5559 | * @sht: template for SCSI host |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 5560 | * |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5561 | * Register initialized ATA host. @host is allocated using |
| 5562 | * ata_host_alloc() and fully initialized by LLD. This function |
| 5563 | * starts ports, registers @host with ATA and SCSI layers and |
| 5564 | * probe registered devices. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5565 | * |
| 5566 | * LOCKING: |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5567 | * Inherited from calling layer (may sleep). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5568 | * |
| 5569 | * RETURNS: |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5570 | * 0 on success, -errno otherwise. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5571 | */ |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5572 | int ata_host_register(struct ata_host *host, struct scsi_host_template *sht) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5573 | { |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5574 | int i, rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5575 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5576 | /* host must have been started */ |
| 5577 | if (!(host->flags & ATA_HOST_STARTED)) { |
| 5578 | dev_printk(KERN_ERR, host->dev, |
| 5579 | "BUG: trying to register unstarted host\n"); |
| 5580 | WARN_ON(1); |
| 5581 | return -EINVAL; |
Alan Cox | 02f076a | 2006-09-26 17:35:32 +0100 | [diff] [blame] | 5582 | } |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 5583 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5584 | /* Blow away unused ports. This happens when LLD can't |
| 5585 | * determine the exact number of ports to allocate at |
| 5586 | * allocation time. |
| 5587 | */ |
| 5588 | for (i = host->n_ports; host->ports[i]; i++) |
| 5589 | kfree(host->ports[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5590 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5591 | /* give ports names and add SCSI hosts */ |
| 5592 | for (i = 0; i < host->n_ports; i++) |
| 5593 | host->ports[i]->print_id = ata_print_id++; |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 5594 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5595 | rc = ata_scsi_add_hosts(host, sht); |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5596 | if (rc) |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5597 | return rc; |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5598 | |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 5599 | /* associate with ACPI nodes */ |
| 5600 | ata_acpi_associate(host); |
| 5601 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5602 | /* set cable, sata_spd_limit and report */ |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5603 | for (i = 0; i < host->n_ports; i++) { |
| 5604 | struct ata_port *ap = host->ports[i]; |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5605 | unsigned long xfer_mask; |
| 5606 | |
| 5607 | /* set SATA cable type if still unset */ |
| 5608 | if (ap->cbl == ATA_CBL_NONE && (ap->flags & ATA_FLAG_SATA)) |
| 5609 | ap->cbl = ATA_CBL_SATA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5610 | |
Tejun Heo | 5a04bf4 | 2006-05-31 18:27:38 +0900 | [diff] [blame] | 5611 | /* init sata_spd_limit to the current value */ |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5612 | sata_link_init_spd(&ap->link); |
Tejun Heo | 5a04bf4 | 2006-05-31 18:27:38 +0900 | [diff] [blame] | 5613 | |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 5614 | /* print per-port info to dmesg */ |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5615 | xfer_mask = ata_pack_xfermask(ap->pio_mask, ap->mwdma_mask, |
| 5616 | ap->udma_mask); |
| 5617 | |
Tejun Heo | abf6e8e | 2007-10-09 14:57:25 +0900 | [diff] [blame] | 5618 | if (!ata_port_is_dummy(ap)) { |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 5619 | ata_port_printk(ap, KERN_INFO, |
| 5620 | "%cATA max %s %s\n", |
Tejun Heo | a16abc0 | 2007-05-21 18:33:47 +0200 | [diff] [blame] | 5621 | (ap->flags & ATA_FLAG_SATA) ? 'S' : 'P', |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5622 | ata_mode_string(xfer_mask), |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 5623 | ap->link.eh_info.desc); |
Tejun Heo | abf6e8e | 2007-10-09 14:57:25 +0900 | [diff] [blame] | 5624 | ata_ehi_clear_desc(&ap->link.eh_info); |
| 5625 | } else |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5626 | ata_port_printk(ap, KERN_INFO, "DUMMY\n"); |
| 5627 | } |
| 5628 | |
| 5629 | /* perform each probe synchronously */ |
| 5630 | DPRINTK("probe begin\n"); |
| 5631 | for (i = 0; i < host->n_ports; i++) { |
| 5632 | struct ata_port *ap = host->ports[i]; |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5633 | |
| 5634 | /* probe */ |
Tejun Heo | 52783c5 | 2006-05-31 18:28:22 +0900 | [diff] [blame] | 5635 | if (ap->ops->error_handler) { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 5636 | struct ata_eh_info *ehi = &ap->link.eh_info; |
Tejun Heo | 3e70639 | 2006-05-31 18:28:11 +0900 | [diff] [blame] | 5637 | unsigned long flags; |
| 5638 | |
| 5639 | ata_port_probe(ap); |
| 5640 | |
| 5641 | /* kick EH for boot probing */ |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 5642 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | 3e70639 | 2006-05-31 18:28:11 +0900 | [diff] [blame] | 5643 | |
Tejun Heo | b558edd | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 5644 | ehi->probe_mask |= ATA_ALL_DEVICES; |
Tejun Heo | 391191c | 2008-05-19 01:15:12 +0900 | [diff] [blame] | 5645 | ehi->action |= ATA_EH_RESET | ATA_EH_LPM; |
Tejun Heo | 1cdaf53 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 5646 | ehi->flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET; |
Tejun Heo | 3e70639 | 2006-05-31 18:28:11 +0900 | [diff] [blame] | 5647 | |
Tejun Heo | f4d6d00 | 2007-05-01 11:50:15 +0200 | [diff] [blame] | 5648 | ap->pflags &= ~ATA_PFLAG_INITIALIZING; |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 5649 | ap->pflags |= ATA_PFLAG_LOADING; |
Tejun Heo | 3e70639 | 2006-05-31 18:28:11 +0900 | [diff] [blame] | 5650 | ata_port_schedule_eh(ap); |
| 5651 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 5652 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | 3e70639 | 2006-05-31 18:28:11 +0900 | [diff] [blame] | 5653 | |
| 5654 | /* wait for EH to finish */ |
| 5655 | ata_port_wait_eh(ap); |
| 5656 | } else { |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 5657 | DPRINTK("ata%u: bus probe begin\n", ap->print_id); |
Tejun Heo | 3e70639 | 2006-05-31 18:28:11 +0900 | [diff] [blame] | 5658 | rc = ata_bus_probe(ap); |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 5659 | DPRINTK("ata%u: bus probe end\n", ap->print_id); |
Tejun Heo | 3e70639 | 2006-05-31 18:28:11 +0900 | [diff] [blame] | 5660 | |
| 5661 | if (rc) { |
| 5662 | /* FIXME: do something useful here? |
| 5663 | * Current libata behavior will |
| 5664 | * tear down everything when |
| 5665 | * the module is removed |
| 5666 | * or the h/w is unplugged. |
| 5667 | */ |
| 5668 | } |
| 5669 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5670 | } |
| 5671 | |
| 5672 | /* probes are done, now scan each port's disk(s) */ |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 5673 | DPRINTK("host probe begin\n"); |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5674 | for (i = 0; i < host->n_ports; i++) { |
| 5675 | struct ata_port *ap = host->ports[i]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5676 | |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 5677 | ata_scsi_scan_host(ap, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5678 | } |
| 5679 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5680 | return 0; |
| 5681 | } |
| 5682 | |
| 5683 | /** |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5684 | * ata_host_activate - start host, request IRQ and register it |
| 5685 | * @host: target ATA host |
| 5686 | * @irq: IRQ to request |
| 5687 | * @irq_handler: irq_handler used when requesting IRQ |
| 5688 | * @irq_flags: irq_flags used when requesting IRQ |
| 5689 | * @sht: scsi_host_template to use when registering the host |
| 5690 | * |
| 5691 | * After allocating an ATA host and initializing it, most libata |
| 5692 | * LLDs perform three steps to activate the host - start host, |
| 5693 | * request IRQ and register it. This helper takes necessasry |
| 5694 | * arguments and performs the three steps in one go. |
| 5695 | * |
Paul Mundt | 3d46b2e | 2007-11-08 11:14:56 +0900 | [diff] [blame] | 5696 | * An invalid IRQ skips the IRQ registration and expects the host to |
| 5697 | * have set polling mode on the port. In this case, @irq_handler |
| 5698 | * should be NULL. |
| 5699 | * |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5700 | * LOCKING: |
| 5701 | * Inherited from calling layer (may sleep). |
| 5702 | * |
| 5703 | * RETURNS: |
| 5704 | * 0 on success, -errno otherwise. |
| 5705 | */ |
| 5706 | int ata_host_activate(struct ata_host *host, int irq, |
| 5707 | irq_handler_t irq_handler, unsigned long irq_flags, |
| 5708 | struct scsi_host_template *sht) |
| 5709 | { |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 5710 | int i, rc; |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5711 | |
| 5712 | rc = ata_host_start(host); |
| 5713 | if (rc) |
| 5714 | return rc; |
| 5715 | |
Paul Mundt | 3d46b2e | 2007-11-08 11:14:56 +0900 | [diff] [blame] | 5716 | /* Special case for polling mode */ |
| 5717 | if (!irq) { |
| 5718 | WARN_ON(irq_handler); |
| 5719 | return ata_host_register(host, sht); |
| 5720 | } |
| 5721 | |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5722 | rc = devm_request_irq(host->dev, irq, irq_handler, irq_flags, |
| 5723 | dev_driver_string(host->dev), host); |
| 5724 | if (rc) |
| 5725 | return rc; |
| 5726 | |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 5727 | for (i = 0; i < host->n_ports; i++) |
| 5728 | ata_port_desc(host->ports[i], "irq %d", irq); |
Tejun Heo | 4031826 | 2007-07-03 01:38:47 +0900 | [diff] [blame] | 5729 | |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5730 | rc = ata_host_register(host, sht); |
| 5731 | /* if failed, just free the IRQ and leave ports alone */ |
| 5732 | if (rc) |
| 5733 | devm_free_irq(host->dev, irq, host); |
| 5734 | |
| 5735 | return rc; |
| 5736 | } |
| 5737 | |
| 5738 | /** |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 5739 | * ata_port_detach - Detach ATA port in prepration of device removal |
| 5740 | * @ap: ATA port to be detached |
| 5741 | * |
| 5742 | * Detach all ATA devices and the associated SCSI devices of @ap; |
| 5743 | * then, remove the associated SCSI host. @ap is guaranteed to |
| 5744 | * be quiescent on return from this function. |
| 5745 | * |
| 5746 | * LOCKING: |
| 5747 | * Kernel thread context (may sleep). |
| 5748 | */ |
Adrian Bunk | 741b776 | 2007-10-24 18:23:06 +0200 | [diff] [blame] | 5749 | static void ata_port_detach(struct ata_port *ap) |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 5750 | { |
| 5751 | unsigned long flags; |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 5752 | struct ata_link *link; |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5753 | struct ata_device *dev; |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 5754 | |
| 5755 | if (!ap->ops->error_handler) |
Tejun Heo | c3cf30a | 2006-08-05 03:59:11 +0900 | [diff] [blame] | 5756 | goto skip_eh; |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 5757 | |
| 5758 | /* tell EH we're leaving & flush EH */ |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 5759 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 5760 | ap->pflags |= ATA_PFLAG_UNLOADING; |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 5761 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 5762 | |
| 5763 | ata_port_wait_eh(ap); |
| 5764 | |
Tejun Heo | 7f9ad9b | 2007-12-15 15:05:00 +0900 | [diff] [blame] | 5765 | /* EH is now guaranteed to see UNLOADING - EH context belongs |
| 5766 | * to us. Disable all existing devices. |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 5767 | */ |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 5768 | ata_port_for_each_link(link, ap) { |
| 5769 | ata_link_for_each_dev(dev, link) |
| 5770 | ata_dev_disable(dev); |
| 5771 | } |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 5772 | |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 5773 | /* Final freeze & EH. All in-flight commands are aborted. EH |
| 5774 | * will be skipped and retrials will be terminated with bad |
| 5775 | * target. |
| 5776 | */ |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 5777 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 5778 | ata_port_freeze(ap); /* won't be thawed */ |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 5779 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 5780 | |
| 5781 | ata_port_wait_eh(ap); |
Oleg Nesterov | 45a66c1 | 2007-07-09 11:46:13 -0700 | [diff] [blame] | 5782 | cancel_rearming_delayed_work(&ap->hotplug_task); |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 5783 | |
Tejun Heo | c3cf30a | 2006-08-05 03:59:11 +0900 | [diff] [blame] | 5784 | skip_eh: |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 5785 | /* remove the associated SCSI host */ |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5786 | scsi_remove_host(ap->scsi_host); |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 5787 | } |
| 5788 | |
| 5789 | /** |
Tejun Heo | 0529c15 | 2007-01-20 16:00:26 +0900 | [diff] [blame] | 5790 | * ata_host_detach - Detach all ports of an ATA host |
| 5791 | * @host: Host to detach |
| 5792 | * |
| 5793 | * Detach all ports of @host. |
| 5794 | * |
| 5795 | * LOCKING: |
| 5796 | * Kernel thread context (may sleep). |
| 5797 | */ |
| 5798 | void ata_host_detach(struct ata_host *host) |
| 5799 | { |
| 5800 | int i; |
| 5801 | |
| 5802 | for (i = 0; i < host->n_ports; i++) |
| 5803 | ata_port_detach(host->ports[i]); |
Tejun Heo | 562f0c2 | 2007-12-15 15:05:01 +0900 | [diff] [blame] | 5804 | |
| 5805 | /* the host is dead now, dissociate ACPI */ |
| 5806 | ata_acpi_dissociate(host); |
Tejun Heo | 0529c15 | 2007-01-20 16:00:26 +0900 | [diff] [blame] | 5807 | } |
| 5808 | |
Jeff Garzik | 374b187 | 2005-08-30 05:42:52 -0400 | [diff] [blame] | 5809 | #ifdef CONFIG_PCI |
| 5810 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 5811 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5812 | * ata_pci_remove_one - PCI layer callback for device removal |
| 5813 | * @pdev: PCI device that was removed |
| 5814 | * |
Tejun Heo | b878ca5 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 5815 | * PCI layer indicates to libata via this hook that hot-unplug or |
| 5816 | * module unload event has occurred. Detach all ports. Resource |
| 5817 | * release is handled via devres. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5818 | * |
| 5819 | * LOCKING: |
| 5820 | * Inherited from PCI layer (may sleep). |
| 5821 | */ |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 5822 | void ata_pci_remove_one(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5823 | { |
Jeff Garzik | 2855568 | 2007-10-11 17:12:35 -0400 | [diff] [blame] | 5824 | struct device *dev = &pdev->dev; |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5825 | struct ata_host *host = dev_get_drvdata(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5826 | |
Tejun Heo | b878ca5 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 5827 | ata_host_detach(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5828 | } |
| 5829 | |
| 5830 | /* move to PCI subsystem */ |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 5831 | int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5832 | { |
| 5833 | unsigned long tmp = 0; |
| 5834 | |
| 5835 | switch (bits->width) { |
| 5836 | case 1: { |
| 5837 | u8 tmp8 = 0; |
| 5838 | pci_read_config_byte(pdev, bits->reg, &tmp8); |
| 5839 | tmp = tmp8; |
| 5840 | break; |
| 5841 | } |
| 5842 | case 2: { |
| 5843 | u16 tmp16 = 0; |
| 5844 | pci_read_config_word(pdev, bits->reg, &tmp16); |
| 5845 | tmp = tmp16; |
| 5846 | break; |
| 5847 | } |
| 5848 | case 4: { |
| 5849 | u32 tmp32 = 0; |
| 5850 | pci_read_config_dword(pdev, bits->reg, &tmp32); |
| 5851 | tmp = tmp32; |
| 5852 | break; |
| 5853 | } |
| 5854 | |
| 5855 | default: |
| 5856 | return -EINVAL; |
| 5857 | } |
| 5858 | |
| 5859 | tmp &= bits->mask; |
| 5860 | |
| 5861 | return (tmp == bits->val) ? 1 : 0; |
| 5862 | } |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 5863 | |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 5864 | #ifdef CONFIG_PM |
Tejun Heo | 3c5100c | 2006-07-26 16:58:33 +0900 | [diff] [blame] | 5865 | void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg) |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 5866 | { |
| 5867 | pci_save_state(pdev); |
Tejun Heo | 4c90d97 | 2007-02-20 18:14:48 +0900 | [diff] [blame] | 5868 | pci_disable_device(pdev); |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5869 | |
Rafael J. Wysocki | 3a2d5b7 | 2008-02-23 19:13:25 +0100 | [diff] [blame] | 5870 | if (mesg.event & PM_EVENT_SLEEP) |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5871 | pci_set_power_state(pdev, PCI_D3hot); |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 5872 | } |
| 5873 | |
Tejun Heo | 553c4aa | 2006-12-26 19:39:50 +0900 | [diff] [blame] | 5874 | int ata_pci_device_do_resume(struct pci_dev *pdev) |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 5875 | { |
Tejun Heo | 553c4aa | 2006-12-26 19:39:50 +0900 | [diff] [blame] | 5876 | int rc; |
| 5877 | |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 5878 | pci_set_power_state(pdev, PCI_D0); |
| 5879 | pci_restore_state(pdev); |
Tejun Heo | 553c4aa | 2006-12-26 19:39:50 +0900 | [diff] [blame] | 5880 | |
Tejun Heo | b878ca5 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 5881 | rc = pcim_enable_device(pdev); |
Tejun Heo | 553c4aa | 2006-12-26 19:39:50 +0900 | [diff] [blame] | 5882 | if (rc) { |
| 5883 | dev_printk(KERN_ERR, &pdev->dev, |
| 5884 | "failed to enable device after resume (%d)\n", rc); |
| 5885 | return rc; |
| 5886 | } |
| 5887 | |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 5888 | pci_set_master(pdev); |
Tejun Heo | 553c4aa | 2006-12-26 19:39:50 +0900 | [diff] [blame] | 5889 | return 0; |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5890 | } |
| 5891 | |
Tejun Heo | 3c5100c | 2006-07-26 16:58:33 +0900 | [diff] [blame] | 5892 | int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg) |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5893 | { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5894 | struct ata_host *host = dev_get_drvdata(&pdev->dev); |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5895 | int rc = 0; |
| 5896 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5897 | rc = ata_host_suspend(host, mesg); |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5898 | if (rc) |
| 5899 | return rc; |
| 5900 | |
Tejun Heo | 3c5100c | 2006-07-26 16:58:33 +0900 | [diff] [blame] | 5901 | ata_pci_device_do_suspend(pdev, mesg); |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5902 | |
| 5903 | return 0; |
| 5904 | } |
| 5905 | |
| 5906 | int ata_pci_device_resume(struct pci_dev *pdev) |
| 5907 | { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5908 | struct ata_host *host = dev_get_drvdata(&pdev->dev); |
Tejun Heo | 553c4aa | 2006-12-26 19:39:50 +0900 | [diff] [blame] | 5909 | int rc; |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5910 | |
Tejun Heo | 553c4aa | 2006-12-26 19:39:50 +0900 | [diff] [blame] | 5911 | rc = ata_pci_device_do_resume(pdev); |
| 5912 | if (rc == 0) |
| 5913 | ata_host_resume(host); |
| 5914 | return rc; |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 5915 | } |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 5916 | #endif /* CONFIG_PM */ |
| 5917 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5918 | #endif /* CONFIG_PCI */ |
| 5919 | |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 5920 | static int __init ata_parse_force_one(char **cur, |
| 5921 | struct ata_force_ent *force_ent, |
| 5922 | const char **reason) |
| 5923 | { |
| 5924 | /* FIXME: Currently, there's no way to tag init const data and |
| 5925 | * using __initdata causes build failure on some versions of |
| 5926 | * gcc. Once __initdataconst is implemented, add const to the |
| 5927 | * following structure. |
| 5928 | */ |
| 5929 | static struct ata_force_param force_tbl[] __initdata = { |
| 5930 | { "40c", .cbl = ATA_CBL_PATA40 }, |
| 5931 | { "80c", .cbl = ATA_CBL_PATA80 }, |
| 5932 | { "short40c", .cbl = ATA_CBL_PATA40_SHORT }, |
| 5933 | { "unk", .cbl = ATA_CBL_PATA_UNK }, |
| 5934 | { "ign", .cbl = ATA_CBL_PATA_IGN }, |
| 5935 | { "sata", .cbl = ATA_CBL_SATA }, |
| 5936 | { "1.5Gbps", .spd_limit = 1 }, |
| 5937 | { "3.0Gbps", .spd_limit = 2 }, |
| 5938 | { "noncq", .horkage_on = ATA_HORKAGE_NONCQ }, |
| 5939 | { "ncq", .horkage_off = ATA_HORKAGE_NONCQ }, |
| 5940 | { "pio0", .xfer_mask = 1 << (ATA_SHIFT_PIO + 0) }, |
| 5941 | { "pio1", .xfer_mask = 1 << (ATA_SHIFT_PIO + 1) }, |
| 5942 | { "pio2", .xfer_mask = 1 << (ATA_SHIFT_PIO + 2) }, |
| 5943 | { "pio3", .xfer_mask = 1 << (ATA_SHIFT_PIO + 3) }, |
| 5944 | { "pio4", .xfer_mask = 1 << (ATA_SHIFT_PIO + 4) }, |
| 5945 | { "pio5", .xfer_mask = 1 << (ATA_SHIFT_PIO + 5) }, |
| 5946 | { "pio6", .xfer_mask = 1 << (ATA_SHIFT_PIO + 6) }, |
| 5947 | { "mwdma0", .xfer_mask = 1 << (ATA_SHIFT_MWDMA + 0) }, |
| 5948 | { "mwdma1", .xfer_mask = 1 << (ATA_SHIFT_MWDMA + 1) }, |
| 5949 | { "mwdma2", .xfer_mask = 1 << (ATA_SHIFT_MWDMA + 2) }, |
| 5950 | { "mwdma3", .xfer_mask = 1 << (ATA_SHIFT_MWDMA + 3) }, |
| 5951 | { "mwdma4", .xfer_mask = 1 << (ATA_SHIFT_MWDMA + 4) }, |
| 5952 | { "udma0", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 0) }, |
| 5953 | { "udma16", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 0) }, |
| 5954 | { "udma/16", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 0) }, |
| 5955 | { "udma1", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 1) }, |
| 5956 | { "udma25", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 1) }, |
| 5957 | { "udma/25", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 1) }, |
| 5958 | { "udma2", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 2) }, |
| 5959 | { "udma33", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 2) }, |
| 5960 | { "udma/33", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 2) }, |
| 5961 | { "udma3", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 3) }, |
| 5962 | { "udma44", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 3) }, |
| 5963 | { "udma/44", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 3) }, |
| 5964 | { "udma4", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 4) }, |
| 5965 | { "udma66", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 4) }, |
| 5966 | { "udma/66", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 4) }, |
| 5967 | { "udma5", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 5) }, |
| 5968 | { "udma100", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 5) }, |
| 5969 | { "udma/100", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 5) }, |
| 5970 | { "udma6", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 6) }, |
| 5971 | { "udma133", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 6) }, |
| 5972 | { "udma/133", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 6) }, |
| 5973 | { "udma7", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 7) }, |
| 5974 | }; |
| 5975 | char *start = *cur, *p = *cur; |
| 5976 | char *id, *val, *endp; |
| 5977 | const struct ata_force_param *match_fp = NULL; |
| 5978 | int nr_matches = 0, i; |
| 5979 | |
| 5980 | /* find where this param ends and update *cur */ |
| 5981 | while (*p != '\0' && *p != ',') |
| 5982 | p++; |
| 5983 | |
| 5984 | if (*p == '\0') |
| 5985 | *cur = p; |
| 5986 | else |
| 5987 | *cur = p + 1; |
| 5988 | |
| 5989 | *p = '\0'; |
| 5990 | |
| 5991 | /* parse */ |
| 5992 | p = strchr(start, ':'); |
| 5993 | if (!p) { |
| 5994 | val = strstrip(start); |
| 5995 | goto parse_val; |
| 5996 | } |
| 5997 | *p = '\0'; |
| 5998 | |
| 5999 | id = strstrip(start); |
| 6000 | val = strstrip(p + 1); |
| 6001 | |
| 6002 | /* parse id */ |
| 6003 | p = strchr(id, '.'); |
| 6004 | if (p) { |
| 6005 | *p++ = '\0'; |
| 6006 | force_ent->device = simple_strtoul(p, &endp, 10); |
| 6007 | if (p == endp || *endp != '\0') { |
| 6008 | *reason = "invalid device"; |
| 6009 | return -EINVAL; |
| 6010 | } |
| 6011 | } |
| 6012 | |
| 6013 | force_ent->port = simple_strtoul(id, &endp, 10); |
| 6014 | if (p == endp || *endp != '\0') { |
| 6015 | *reason = "invalid port/link"; |
| 6016 | return -EINVAL; |
| 6017 | } |
| 6018 | |
| 6019 | parse_val: |
| 6020 | /* parse val, allow shortcuts so that both 1.5 and 1.5Gbps work */ |
| 6021 | for (i = 0; i < ARRAY_SIZE(force_tbl); i++) { |
| 6022 | const struct ata_force_param *fp = &force_tbl[i]; |
| 6023 | |
| 6024 | if (strncasecmp(val, fp->name, strlen(val))) |
| 6025 | continue; |
| 6026 | |
| 6027 | nr_matches++; |
| 6028 | match_fp = fp; |
| 6029 | |
| 6030 | if (strcasecmp(val, fp->name) == 0) { |
| 6031 | nr_matches = 1; |
| 6032 | break; |
| 6033 | } |
| 6034 | } |
| 6035 | |
| 6036 | if (!nr_matches) { |
| 6037 | *reason = "unknown value"; |
| 6038 | return -EINVAL; |
| 6039 | } |
| 6040 | if (nr_matches > 1) { |
| 6041 | *reason = "ambigious value"; |
| 6042 | return -EINVAL; |
| 6043 | } |
| 6044 | |
| 6045 | force_ent->param = *match_fp; |
| 6046 | |
| 6047 | return 0; |
| 6048 | } |
| 6049 | |
| 6050 | static void __init ata_parse_force_param(void) |
| 6051 | { |
| 6052 | int idx = 0, size = 1; |
| 6053 | int last_port = -1, last_device = -1; |
| 6054 | char *p, *cur, *next; |
| 6055 | |
| 6056 | /* calculate maximum number of params and allocate force_tbl */ |
| 6057 | for (p = ata_force_param_buf; *p; p++) |
| 6058 | if (*p == ',') |
| 6059 | size++; |
| 6060 | |
| 6061 | ata_force_tbl = kzalloc(sizeof(ata_force_tbl[0]) * size, GFP_KERNEL); |
| 6062 | if (!ata_force_tbl) { |
| 6063 | printk(KERN_WARNING "ata: failed to extend force table, " |
| 6064 | "libata.force ignored\n"); |
| 6065 | return; |
| 6066 | } |
| 6067 | |
| 6068 | /* parse and populate the table */ |
| 6069 | for (cur = ata_force_param_buf; *cur != '\0'; cur = next) { |
| 6070 | const char *reason = ""; |
| 6071 | struct ata_force_ent te = { .port = -1, .device = -1 }; |
| 6072 | |
| 6073 | next = cur; |
| 6074 | if (ata_parse_force_one(&next, &te, &reason)) { |
| 6075 | printk(KERN_WARNING "ata: failed to parse force " |
| 6076 | "parameter \"%s\" (%s)\n", |
| 6077 | cur, reason); |
| 6078 | continue; |
| 6079 | } |
| 6080 | |
| 6081 | if (te.port == -1) { |
| 6082 | te.port = last_port; |
| 6083 | te.device = last_device; |
| 6084 | } |
| 6085 | |
| 6086 | ata_force_tbl[idx++] = te; |
| 6087 | |
| 6088 | last_port = te.port; |
| 6089 | last_device = te.device; |
| 6090 | } |
| 6091 | |
| 6092 | ata_force_tbl_size = idx; |
| 6093 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6094 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6095 | static int __init ata_init(void) |
| 6096 | { |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 6097 | ata_parse_force_param(); |
| 6098 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6099 | ata_wq = create_workqueue("ata"); |
| 6100 | if (!ata_wq) |
Elias Oltmanns | 49ea3b0 | 2008-07-30 12:32:39 -0700 | [diff] [blame^] | 6101 | goto free_force_tbl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6102 | |
Tejun Heo | 453b07a | 2006-05-31 18:27:42 +0900 | [diff] [blame] | 6103 | ata_aux_wq = create_singlethread_workqueue("ata_aux"); |
Elias Oltmanns | 49ea3b0 | 2008-07-30 12:32:39 -0700 | [diff] [blame^] | 6104 | if (!ata_aux_wq) |
| 6105 | goto free_wq; |
Tejun Heo | 453b07a | 2006-05-31 18:27:42 +0900 | [diff] [blame] | 6106 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6107 | printk(KERN_DEBUG "libata version " DRV_VERSION " loaded.\n"); |
| 6108 | return 0; |
Elias Oltmanns | 49ea3b0 | 2008-07-30 12:32:39 -0700 | [diff] [blame^] | 6109 | |
| 6110 | free_wq: |
| 6111 | destroy_workqueue(ata_wq); |
| 6112 | free_force_tbl: |
| 6113 | kfree(ata_force_tbl); |
| 6114 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6115 | } |
| 6116 | |
| 6117 | static void __exit ata_exit(void) |
| 6118 | { |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 6119 | kfree(ata_force_tbl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6120 | destroy_workqueue(ata_wq); |
Tejun Heo | 453b07a | 2006-05-31 18:27:42 +0900 | [diff] [blame] | 6121 | destroy_workqueue(ata_aux_wq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6122 | } |
| 6123 | |
Brian King | a462508 | 2006-11-13 16:32:36 -0600 | [diff] [blame] | 6124 | subsys_initcall(ata_init); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6125 | module_exit(ata_exit); |
| 6126 | |
Jeff Garzik | 67846b3 | 2005-10-05 02:58:32 -0400 | [diff] [blame] | 6127 | static unsigned long ratelimit_time; |
Ingo Molnar | 34af946 | 2006-06-27 02:53:55 -0700 | [diff] [blame] | 6128 | static DEFINE_SPINLOCK(ata_ratelimit_lock); |
Jeff Garzik | 67846b3 | 2005-10-05 02:58:32 -0400 | [diff] [blame] | 6129 | |
| 6130 | int ata_ratelimit(void) |
| 6131 | { |
| 6132 | int rc; |
| 6133 | unsigned long flags; |
| 6134 | |
| 6135 | spin_lock_irqsave(&ata_ratelimit_lock, flags); |
| 6136 | |
| 6137 | if (time_after(jiffies, ratelimit_time)) { |
| 6138 | rc = 1; |
| 6139 | ratelimit_time = jiffies + (HZ/5); |
| 6140 | } else |
| 6141 | rc = 0; |
| 6142 | |
| 6143 | spin_unlock_irqrestore(&ata_ratelimit_lock, flags); |
| 6144 | |
| 6145 | return rc; |
| 6146 | } |
| 6147 | |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 6148 | /** |
| 6149 | * ata_wait_register - wait until register value changes |
| 6150 | * @reg: IO-mapped register |
| 6151 | * @mask: Mask to apply to read register value |
| 6152 | * @val: Wait condition |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 6153 | * @interval: polling interval in milliseconds |
| 6154 | * @timeout: timeout in milliseconds |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 6155 | * |
| 6156 | * Waiting for some bits of register to change is a common |
| 6157 | * operation for ATA controllers. This function reads 32bit LE |
| 6158 | * IO-mapped register @reg and tests for the following condition. |
| 6159 | * |
| 6160 | * (*@reg & mask) != val |
| 6161 | * |
| 6162 | * If the condition is met, it returns; otherwise, the process is |
| 6163 | * repeated after @interval_msec until timeout. |
| 6164 | * |
| 6165 | * LOCKING: |
| 6166 | * Kernel thread context (may sleep) |
| 6167 | * |
| 6168 | * RETURNS: |
| 6169 | * The final register value. |
| 6170 | */ |
| 6171 | u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val, |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 6172 | unsigned long interval, unsigned long timeout) |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 6173 | { |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 6174 | unsigned long deadline; |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 6175 | u32 tmp; |
| 6176 | |
| 6177 | tmp = ioread32(reg); |
| 6178 | |
| 6179 | /* Calculate timeout _after_ the first read to make sure |
| 6180 | * preceding writes reach the controller before starting to |
| 6181 | * eat away the timeout. |
| 6182 | */ |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 6183 | deadline = ata_deadline(jiffies, timeout); |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 6184 | |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 6185 | while ((tmp & mask) == val && time_before(jiffies, deadline)) { |
| 6186 | msleep(interval); |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 6187 | tmp = ioread32(reg); |
| 6188 | } |
| 6189 | |
| 6190 | return tmp; |
| 6191 | } |
| 6192 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6193 | /* |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 6194 | * Dummy port_ops |
| 6195 | */ |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 6196 | static unsigned int ata_dummy_qc_issue(struct ata_queued_cmd *qc) |
| 6197 | { |
| 6198 | return AC_ERR_SYSTEM; |
| 6199 | } |
| 6200 | |
Tejun Heo | 182d7bb | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 6201 | static void ata_dummy_error_handler(struct ata_port *ap) |
| 6202 | { |
| 6203 | /* truly dummy */ |
| 6204 | } |
| 6205 | |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 6206 | struct ata_port_operations ata_dummy_port_ops = { |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 6207 | .qc_prep = ata_noop_qc_prep, |
| 6208 | .qc_issue = ata_dummy_qc_issue, |
Tejun Heo | 182d7bb | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 6209 | .error_handler = ata_dummy_error_handler, |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 6210 | }; |
| 6211 | |
Tejun Heo | 21b0ad4 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6212 | const struct ata_port_info ata_dummy_port_info = { |
| 6213 | .port_ops = &ata_dummy_port_ops, |
| 6214 | }; |
| 6215 | |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 6216 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6217 | * libata is essentially a library of internal helper functions for |
| 6218 | * low-level ATA host controller drivers. As such, the API/ABI is |
| 6219 | * likely to change as new drivers are added and updated. |
| 6220 | * Do not depend on ABI/API stability. |
| 6221 | */ |
Tejun Heo | e9c8391 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 6222 | EXPORT_SYMBOL_GPL(sata_deb_timing_normal); |
| 6223 | EXPORT_SYMBOL_GPL(sata_deb_timing_hotplug); |
| 6224 | EXPORT_SYMBOL_GPL(sata_deb_timing_long); |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 6225 | EXPORT_SYMBOL_GPL(ata_base_port_ops); |
| 6226 | EXPORT_SYMBOL_GPL(sata_port_ops); |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 6227 | EXPORT_SYMBOL_GPL(ata_dummy_port_ops); |
Tejun Heo | 21b0ad4 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6228 | EXPORT_SYMBOL_GPL(ata_dummy_port_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6229 | EXPORT_SYMBOL_GPL(ata_std_bios_param); |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 6230 | EXPORT_SYMBOL_GPL(ata_host_init); |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6231 | EXPORT_SYMBOL_GPL(ata_host_alloc); |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6232 | EXPORT_SYMBOL_GPL(ata_host_alloc_pinfo); |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 6233 | EXPORT_SYMBOL_GPL(ata_host_start); |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6234 | EXPORT_SYMBOL_GPL(ata_host_register); |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6235 | EXPORT_SYMBOL_GPL(ata_host_activate); |
Tejun Heo | 0529c15 | 2007-01-20 16:00:26 +0900 | [diff] [blame] | 6236 | EXPORT_SYMBOL_GPL(ata_host_detach); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6237 | EXPORT_SYMBOL_GPL(ata_sg_init); |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 6238 | EXPORT_SYMBOL_GPL(ata_qc_complete); |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 6239 | EXPORT_SYMBOL_GPL(ata_qc_complete_multiple); |
Tejun Heo | 436d34b | 2008-04-02 17:28:46 +0900 | [diff] [blame] | 6240 | EXPORT_SYMBOL_GPL(atapi_cmd_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6241 | EXPORT_SYMBOL_GPL(ata_tf_to_fis); |
| 6242 | EXPORT_SYMBOL_GPL(ata_tf_from_fis); |
Tejun Heo | 6357357 | 2007-11-27 19:43:39 +0900 | [diff] [blame] | 6243 | EXPORT_SYMBOL_GPL(ata_pack_xfermask); |
| 6244 | EXPORT_SYMBOL_GPL(ata_unpack_xfermask); |
| 6245 | EXPORT_SYMBOL_GPL(ata_xfer_mask2mode); |
| 6246 | EXPORT_SYMBOL_GPL(ata_xfer_mode2mask); |
| 6247 | EXPORT_SYMBOL_GPL(ata_xfer_mode2shift); |
| 6248 | EXPORT_SYMBOL_GPL(ata_mode_string); |
| 6249 | EXPORT_SYMBOL_GPL(ata_id_xfermask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6250 | EXPORT_SYMBOL_GPL(ata_port_start); |
Alan | 0435182 | 2007-03-06 02:37:52 -0800 | [diff] [blame] | 6251 | EXPORT_SYMBOL_GPL(ata_do_set_mode); |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 6252 | EXPORT_SYMBOL_GPL(ata_std_qc_defer); |
Brian King | e46834c | 2006-03-17 17:04:03 -0600 | [diff] [blame] | 6253 | EXPORT_SYMBOL_GPL(ata_noop_qc_prep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6254 | EXPORT_SYMBOL_GPL(ata_port_probe); |
Alan | 10305f0 | 2007-02-20 18:01:59 +0000 | [diff] [blame] | 6255 | EXPORT_SYMBOL_GPL(ata_dev_disable); |
Tejun Heo | 3c567b7 | 2006-05-15 20:57:23 +0900 | [diff] [blame] | 6256 | EXPORT_SYMBOL_GPL(sata_set_spd); |
Tejun Heo | aa2731a | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 6257 | EXPORT_SYMBOL_GPL(ata_wait_after_reset); |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 6258 | EXPORT_SYMBOL_GPL(sata_link_debounce); |
| 6259 | EXPORT_SYMBOL_GPL(sata_link_resume); |
Tejun Heo | 0aa1113 | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 6260 | EXPORT_SYMBOL_GPL(ata_std_prereset); |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 6261 | EXPORT_SYMBOL_GPL(sata_link_hardreset); |
Tejun Heo | 57c9efd | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 6262 | EXPORT_SYMBOL_GPL(sata_std_hardreset); |
Tejun Heo | 203c75b | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 6263 | EXPORT_SYMBOL_GPL(ata_std_postreset); |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 6264 | EXPORT_SYMBOL_GPL(ata_dev_classify); |
| 6265 | EXPORT_SYMBOL_GPL(ata_dev_pair); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6266 | EXPORT_SYMBOL_GPL(ata_port_disable); |
Jeff Garzik | 67846b3 | 2005-10-05 02:58:32 -0400 | [diff] [blame] | 6267 | EXPORT_SYMBOL_GPL(ata_ratelimit); |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 6268 | EXPORT_SYMBOL_GPL(ata_wait_register); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6269 | EXPORT_SYMBOL_GPL(ata_scsi_ioctl); |
| 6270 | EXPORT_SYMBOL_GPL(ata_scsi_queuecmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6271 | EXPORT_SYMBOL_GPL(ata_scsi_slave_config); |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 6272 | EXPORT_SYMBOL_GPL(ata_scsi_slave_destroy); |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 6273 | EXPORT_SYMBOL_GPL(ata_scsi_change_queue_depth); |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 6274 | EXPORT_SYMBOL_GPL(sata_scr_valid); |
| 6275 | EXPORT_SYMBOL_GPL(sata_scr_read); |
| 6276 | EXPORT_SYMBOL_GPL(sata_scr_write); |
| 6277 | EXPORT_SYMBOL_GPL(sata_scr_write_flush); |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 6278 | EXPORT_SYMBOL_GPL(ata_link_online); |
| 6279 | EXPORT_SYMBOL_GPL(ata_link_offline); |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 6280 | #ifdef CONFIG_PM |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 6281 | EXPORT_SYMBOL_GPL(ata_host_suspend); |
| 6282 | EXPORT_SYMBOL_GPL(ata_host_resume); |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 6283 | #endif /* CONFIG_PM */ |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 6284 | EXPORT_SYMBOL_GPL(ata_id_string); |
| 6285 | EXPORT_SYMBOL_GPL(ata_id_c_string); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6286 | EXPORT_SYMBOL_GPL(ata_scsi_simulate); |
| 6287 | |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 6288 | EXPORT_SYMBOL_GPL(ata_pio_need_iordy); |
Tejun Heo | 6357357 | 2007-11-27 19:43:39 +0900 | [diff] [blame] | 6289 | EXPORT_SYMBOL_GPL(ata_timing_find_mode); |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 6290 | EXPORT_SYMBOL_GPL(ata_timing_compute); |
| 6291 | EXPORT_SYMBOL_GPL(ata_timing_merge); |
Tejun Heo | a0f79b9 | 2007-12-18 16:33:05 +0900 | [diff] [blame] | 6292 | EXPORT_SYMBOL_GPL(ata_timing_cycle2mode); |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 6293 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6294 | #ifdef CONFIG_PCI |
| 6295 | EXPORT_SYMBOL_GPL(pci_test_config_bits); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6296 | EXPORT_SYMBOL_GPL(ata_pci_remove_one); |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 6297 | #ifdef CONFIG_PM |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 6298 | EXPORT_SYMBOL_GPL(ata_pci_device_do_suspend); |
| 6299 | EXPORT_SYMBOL_GPL(ata_pci_device_do_resume); |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 6300 | EXPORT_SYMBOL_GPL(ata_pci_device_suspend); |
| 6301 | EXPORT_SYMBOL_GPL(ata_pci_device_resume); |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 6302 | #endif /* CONFIG_PM */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6303 | #endif /* CONFIG_PCI */ |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 6304 | |
Tejun Heo | b64bbc3 | 2007-07-16 14:29:39 +0900 | [diff] [blame] | 6305 | EXPORT_SYMBOL_GPL(__ata_ehi_push_desc); |
| 6306 | EXPORT_SYMBOL_GPL(ata_ehi_push_desc); |
| 6307 | EXPORT_SYMBOL_GPL(ata_ehi_clear_desc); |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 6308 | EXPORT_SYMBOL_GPL(ata_port_desc); |
| 6309 | #ifdef CONFIG_PCI |
| 6310 | EXPORT_SYMBOL_GPL(ata_port_pbar_desc); |
| 6311 | #endif /* CONFIG_PCI */ |
Tejun Heo | 7b70fc0 | 2006-05-15 20:58:07 +0900 | [diff] [blame] | 6312 | EXPORT_SYMBOL_GPL(ata_port_schedule_eh); |
Tejun Heo | dbd8261 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 6313 | EXPORT_SYMBOL_GPL(ata_link_abort); |
Tejun Heo | 7b70fc0 | 2006-05-15 20:58:07 +0900 | [diff] [blame] | 6314 | EXPORT_SYMBOL_GPL(ata_port_abort); |
Tejun Heo | e318049 | 2006-05-15 20:58:09 +0900 | [diff] [blame] | 6315 | EXPORT_SYMBOL_GPL(ata_port_freeze); |
Tejun Heo | 7d77b24 | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 6316 | EXPORT_SYMBOL_GPL(sata_async_notification); |
Tejun Heo | e318049 | 2006-05-15 20:58:09 +0900 | [diff] [blame] | 6317 | EXPORT_SYMBOL_GPL(ata_eh_freeze_port); |
| 6318 | EXPORT_SYMBOL_GPL(ata_eh_thaw_port); |
Tejun Heo | ece1d63 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 6319 | EXPORT_SYMBOL_GPL(ata_eh_qc_complete); |
| 6320 | EXPORT_SYMBOL_GPL(ata_eh_qc_retry); |
Mark Lord | 10acf3b | 2008-05-02 02:14:53 -0400 | [diff] [blame] | 6321 | EXPORT_SYMBOL_GPL(ata_eh_analyze_ncq_error); |
Tejun Heo | 022bdb0 | 2006-05-15 20:58:22 +0900 | [diff] [blame] | 6322 | EXPORT_SYMBOL_GPL(ata_do_eh); |
Tejun Heo | a1efdab | 2008-03-25 12:22:50 +0900 | [diff] [blame] | 6323 | EXPORT_SYMBOL_GPL(ata_std_error_handler); |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 6324 | |
| 6325 | EXPORT_SYMBOL_GPL(ata_cable_40wire); |
| 6326 | EXPORT_SYMBOL_GPL(ata_cable_80wire); |
| 6327 | EXPORT_SYMBOL_GPL(ata_cable_unknown); |
Tejun Heo | c88f90c | 2007-11-27 19:43:48 +0900 | [diff] [blame] | 6328 | EXPORT_SYMBOL_GPL(ata_cable_ignore); |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 6329 | EXPORT_SYMBOL_GPL(ata_cable_sata); |