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; |
Tejun Heo | 05944bd | 2008-08-13 20:19:09 +0900 | [diff] [blame] | 107 | unsigned int lflags; |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 108 | }; |
| 109 | |
| 110 | struct ata_force_ent { |
| 111 | int port; |
| 112 | int device; |
| 113 | struct ata_force_param param; |
| 114 | }; |
| 115 | |
| 116 | static struct ata_force_ent *ata_force_tbl; |
| 117 | static int ata_force_tbl_size; |
| 118 | |
| 119 | static char ata_force_param_buf[PAGE_SIZE] __initdata; |
Tejun Heo | 7afb422 | 2008-03-09 20:21:53 +0900 | [diff] [blame] | 120 | /* param_buf is thrown away after initialization, disallow read */ |
| 121 | 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] | 122 | MODULE_PARM_DESC(force, "Force ATA configurations including cable type, link speed and transfer mode (see Documentation/kernel-parameters.txt for details)"); |
| 123 | |
Tejun Heo | 2486fa5 | 2008-07-31 07:52:40 +0900 | [diff] [blame] | 124 | static int atapi_enabled = 1; |
Jeff Garzik | 1623c81 | 2005-08-30 03:37:42 -0400 | [diff] [blame] | 125 | module_param(atapi_enabled, int, 0444); |
| 126 | MODULE_PARM_DESC(atapi_enabled, "Enable discovery of ATAPI devices (0=off, 1=on)"); |
| 127 | |
Adrian Bunk | c5c61bd | 2008-02-25 02:07:25 +0200 | [diff] [blame] | 128 | static int atapi_dmadir = 0; |
Albert Lee | 95de719 | 2006-04-04 10:57:18 +0800 | [diff] [blame] | 129 | module_param(atapi_dmadir, int, 0444); |
| 130 | MODULE_PARM_DESC(atapi_dmadir, "Enable ATAPI DMADIR bridge support (0=off, 1=on)"); |
| 131 | |
Mark Lord | baf4fdf | 2007-08-08 01:08:45 +0900 | [diff] [blame] | 132 | int atapi_passthru16 = 1; |
| 133 | module_param(atapi_passthru16, int, 0444); |
| 134 | MODULE_PARM_DESC(atapi_passthru16, "Enable ATA_16 passthru for ATAPI devices; on by default (0=off, 1=on)"); |
| 135 | |
Jeff Garzik | c3c013a | 2006-02-27 22:31:19 -0500 | [diff] [blame] | 136 | int libata_fua = 0; |
| 137 | module_param_named(fua, libata_fua, int, 0444); |
| 138 | MODULE_PARM_DESC(fua, "FUA support (0=off, 1=on)"); |
| 139 | |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 140 | static int ata_ignore_hpa; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 141 | module_param_named(ignore_hpa, ata_ignore_hpa, int, 0644); |
| 142 | MODULE_PARM_DESC(ignore_hpa, "Ignore HPA limit (0=keep BIOS limits, 1=ignore limits, using full disk)"); |
| 143 | |
Alan Cox | b3a7060 | 2007-10-02 12:38:26 -0400 | [diff] [blame] | 144 | static int libata_dma_mask = ATA_DMA_MASK_ATA|ATA_DMA_MASK_ATAPI|ATA_DMA_MASK_CFA; |
| 145 | module_param_named(dma, libata_dma_mask, int, 0444); |
| 146 | MODULE_PARM_DESC(dma, "DMA enable/disable (0x1==ATA, 0x2==ATAPI, 0x4==CF)"); |
| 147 | |
Tejun Heo | 87fbc5a | 2008-05-20 02:17:54 +0900 | [diff] [blame] | 148 | static int ata_probe_timeout; |
Andrew Morton | a8601e5 | 2006-06-25 01:36:52 -0700 | [diff] [blame] | 149 | module_param(ata_probe_timeout, int, 0444); |
| 150 | MODULE_PARM_DESC(ata_probe_timeout, "Set ATA probing timeout (seconds)"); |
| 151 | |
Jeff Garzik | 6ebe9d8 | 2007-10-05 16:28:36 -0400 | [diff] [blame] | 152 | int libata_noacpi = 0; |
Jeff Garzik | d7d0dad | 2007-03-28 01:57:37 -0400 | [diff] [blame] | 153 | module_param_named(noacpi, libata_noacpi, int, 0444); |
Jeff Garzik | 6ebe9d8 | 2007-10-05 16:28:36 -0400 | [diff] [blame] | 154 | 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] | 155 | |
Alan Cox | ae8d4ee | 2007-11-04 22:05:49 -0500 | [diff] [blame] | 156 | int libata_allow_tpm = 0; |
| 157 | module_param_named(allow_tpm, libata_allow_tpm, int, 0444); |
| 158 | MODULE_PARM_DESC(allow_tpm, "Permit the use of TPM commands"); |
| 159 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | MODULE_AUTHOR("Jeff Garzik"); |
| 161 | MODULE_DESCRIPTION("Library module for ATA devices"); |
| 162 | MODULE_LICENSE("GPL"); |
| 163 | MODULE_VERSION(DRV_VERSION); |
| 164 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 165 | |
Tejun Heo | aadffb6 | 2008-07-31 17:02:41 +0900 | [diff] [blame] | 166 | /* |
| 167 | * Iterator helpers. Don't use directly. |
| 168 | * |
| 169 | * LOCKING: |
| 170 | * Host lock or EH context. |
| 171 | */ |
| 172 | struct ata_link *__ata_port_next_link(struct ata_port *ap, |
| 173 | struct ata_link *link, bool dev_only) |
| 174 | { |
| 175 | /* NULL link indicates start of iteration */ |
| 176 | if (!link) { |
| 177 | if (dev_only && sata_pmp_attached(ap)) |
| 178 | return ap->pmp_link; |
| 179 | return &ap->link; |
| 180 | } |
| 181 | |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 182 | /* we just iterated over the host master link, what's next? */ |
| 183 | if (link == &ap->link) { |
| 184 | if (!sata_pmp_attached(ap)) { |
| 185 | if (unlikely(ap->slave_link) && !dev_only) |
| 186 | return ap->slave_link; |
Tejun Heo | aadffb6 | 2008-07-31 17:02:41 +0900 | [diff] [blame] | 187 | return NULL; |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 188 | } |
Tejun Heo | aadffb6 | 2008-07-31 17:02:41 +0900 | [diff] [blame] | 189 | return ap->pmp_link; |
| 190 | } |
| 191 | |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 192 | /* slave_link excludes PMP */ |
| 193 | if (unlikely(link == ap->slave_link)) |
| 194 | return NULL; |
| 195 | |
Tejun Heo | aadffb6 | 2008-07-31 17:02:41 +0900 | [diff] [blame] | 196 | /* iterate to the next PMP link */ |
| 197 | if (++link < ap->pmp_link + ap->nr_pmp_links) |
| 198 | return link; |
| 199 | return NULL; |
| 200 | } |
| 201 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 202 | /** |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 203 | * ata_dev_phys_link - find physical link for a device |
| 204 | * @dev: ATA device to look up physical link for |
| 205 | * |
| 206 | * Look up physical link which @dev is attached to. Note that |
| 207 | * this is different from @dev->link only when @dev is on slave |
| 208 | * link. For all other cases, it's the same as @dev->link. |
| 209 | * |
| 210 | * LOCKING: |
| 211 | * Don't care. |
| 212 | * |
| 213 | * RETURNS: |
| 214 | * Pointer to the found physical link. |
| 215 | */ |
| 216 | struct ata_link *ata_dev_phys_link(struct ata_device *dev) |
| 217 | { |
| 218 | struct ata_port *ap = dev->link->ap; |
| 219 | |
| 220 | if (!ap->slave_link) |
| 221 | return dev->link; |
| 222 | if (!dev->devno) |
| 223 | return &ap->link; |
| 224 | return ap->slave_link; |
| 225 | } |
| 226 | |
| 227 | /** |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 228 | * ata_force_cbl - force cable type according to libata.force |
Randy Dunlap | 4cdfa1b | 2008-02-22 12:21:37 -0800 | [diff] [blame] | 229 | * @ap: ATA port of interest |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 230 | * |
| 231 | * Force cable type according to libata.force and whine about it. |
| 232 | * The last entry which has matching port number is used, so it |
| 233 | * can be specified as part of device force parameters. For |
| 234 | * example, both "a:40c,1.00:udma4" and "1.00:40c,udma4" have the |
| 235 | * same effect. |
| 236 | * |
| 237 | * LOCKING: |
| 238 | * EH context. |
| 239 | */ |
| 240 | void ata_force_cbl(struct ata_port *ap) |
| 241 | { |
| 242 | int i; |
| 243 | |
| 244 | for (i = ata_force_tbl_size - 1; i >= 0; i--) { |
| 245 | const struct ata_force_ent *fe = &ata_force_tbl[i]; |
| 246 | |
| 247 | if (fe->port != -1 && fe->port != ap->print_id) |
| 248 | continue; |
| 249 | |
| 250 | if (fe->param.cbl == ATA_CBL_NONE) |
| 251 | continue; |
| 252 | |
| 253 | ap->cbl = fe->param.cbl; |
| 254 | ata_port_printk(ap, KERN_NOTICE, |
| 255 | "FORCE: cable set to %s\n", fe->param.name); |
| 256 | return; |
| 257 | } |
| 258 | } |
| 259 | |
| 260 | /** |
Tejun Heo | 05944bd | 2008-08-13 20:19:09 +0900 | [diff] [blame] | 261 | * ata_force_link_limits - force link limits according to libata.force |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 262 | * @link: ATA link of interest |
| 263 | * |
Tejun Heo | 05944bd | 2008-08-13 20:19:09 +0900 | [diff] [blame] | 264 | * Force link flags and SATA spd limit according to libata.force |
| 265 | * and whine about it. When only the port part is specified |
| 266 | * (e.g. 1:), the limit applies to all links connected to both |
| 267 | * the host link and all fan-out ports connected via PMP. If the |
| 268 | * device part is specified as 0 (e.g. 1.00:), it specifies the |
| 269 | * first fan-out link not the host link. Device number 15 always |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 270 | * points to the host link whether PMP is attached or not. If the |
| 271 | * controller has slave link, device number 16 points to it. |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 272 | * |
| 273 | * LOCKING: |
| 274 | * EH context. |
| 275 | */ |
Tejun Heo | 05944bd | 2008-08-13 20:19:09 +0900 | [diff] [blame] | 276 | static void ata_force_link_limits(struct ata_link *link) |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 277 | { |
Tejun Heo | 05944bd | 2008-08-13 20:19:09 +0900 | [diff] [blame] | 278 | bool did_spd = false; |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 279 | int linkno = link->pmp; |
| 280 | int i; |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 281 | |
| 282 | if (ata_is_host_link(link)) |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 283 | linkno += 15; |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 284 | |
| 285 | for (i = ata_force_tbl_size - 1; i >= 0; i--) { |
| 286 | const struct ata_force_ent *fe = &ata_force_tbl[i]; |
| 287 | |
| 288 | if (fe->port != -1 && fe->port != link->ap->print_id) |
| 289 | continue; |
| 290 | |
| 291 | if (fe->device != -1 && fe->device != linkno) |
| 292 | continue; |
| 293 | |
Tejun Heo | 05944bd | 2008-08-13 20:19:09 +0900 | [diff] [blame] | 294 | /* only honor the first spd limit */ |
| 295 | if (!did_spd && fe->param.spd_limit) { |
| 296 | link->hw_sata_spd_limit = (1 << fe->param.spd_limit) - 1; |
| 297 | ata_link_printk(link, KERN_NOTICE, |
| 298 | "FORCE: PHY spd limit set to %s\n", |
| 299 | fe->param.name); |
| 300 | did_spd = true; |
| 301 | } |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 302 | |
Tejun Heo | 05944bd | 2008-08-13 20:19:09 +0900 | [diff] [blame] | 303 | /* let lflags stack */ |
| 304 | if (fe->param.lflags) { |
| 305 | link->flags |= fe->param.lflags; |
| 306 | ata_link_printk(link, KERN_NOTICE, |
| 307 | "FORCE: link flag 0x%x forced -> 0x%x\n", |
| 308 | fe->param.lflags, link->flags); |
| 309 | } |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 310 | } |
| 311 | } |
| 312 | |
| 313 | /** |
| 314 | * ata_force_xfermask - force xfermask according to libata.force |
| 315 | * @dev: ATA device of interest |
| 316 | * |
| 317 | * Force xfer_mask according to libata.force and whine about it. |
| 318 | * For consistency with link selection, device number 15 selects |
| 319 | * the first device connected to the host link. |
| 320 | * |
| 321 | * LOCKING: |
| 322 | * EH context. |
| 323 | */ |
| 324 | static void ata_force_xfermask(struct ata_device *dev) |
| 325 | { |
| 326 | int devno = dev->link->pmp + dev->devno; |
| 327 | int alt_devno = devno; |
| 328 | int i; |
| 329 | |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 330 | /* allow n.15/16 for devices attached to host port */ |
| 331 | if (ata_is_host_link(dev->link)) |
| 332 | alt_devno += 15; |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 333 | |
| 334 | for (i = ata_force_tbl_size - 1; i >= 0; i--) { |
| 335 | const struct ata_force_ent *fe = &ata_force_tbl[i]; |
| 336 | unsigned long pio_mask, mwdma_mask, udma_mask; |
| 337 | |
| 338 | if (fe->port != -1 && fe->port != dev->link->ap->print_id) |
| 339 | continue; |
| 340 | |
| 341 | if (fe->device != -1 && fe->device != devno && |
| 342 | fe->device != alt_devno) |
| 343 | continue; |
| 344 | |
| 345 | if (!fe->param.xfer_mask) |
| 346 | continue; |
| 347 | |
| 348 | ata_unpack_xfermask(fe->param.xfer_mask, |
| 349 | &pio_mask, &mwdma_mask, &udma_mask); |
| 350 | if (udma_mask) |
| 351 | dev->udma_mask = udma_mask; |
| 352 | else if (mwdma_mask) { |
| 353 | dev->udma_mask = 0; |
| 354 | dev->mwdma_mask = mwdma_mask; |
| 355 | } else { |
| 356 | dev->udma_mask = 0; |
| 357 | dev->mwdma_mask = 0; |
| 358 | dev->pio_mask = pio_mask; |
| 359 | } |
| 360 | |
| 361 | ata_dev_printk(dev, KERN_NOTICE, |
| 362 | "FORCE: xfer_mask set to %s\n", fe->param.name); |
| 363 | return; |
| 364 | } |
| 365 | } |
| 366 | |
| 367 | /** |
| 368 | * ata_force_horkage - force horkage according to libata.force |
| 369 | * @dev: ATA device of interest |
| 370 | * |
| 371 | * Force horkage according to libata.force and whine about it. |
| 372 | * For consistency with link selection, device number 15 selects |
| 373 | * the first device connected to the host link. |
| 374 | * |
| 375 | * LOCKING: |
| 376 | * EH context. |
| 377 | */ |
| 378 | static void ata_force_horkage(struct ata_device *dev) |
| 379 | { |
| 380 | int devno = dev->link->pmp + dev->devno; |
| 381 | int alt_devno = devno; |
| 382 | int i; |
| 383 | |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 384 | /* allow n.15/16 for devices attached to host port */ |
| 385 | if (ata_is_host_link(dev->link)) |
| 386 | alt_devno += 15; |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 387 | |
| 388 | for (i = 0; i < ata_force_tbl_size; i++) { |
| 389 | const struct ata_force_ent *fe = &ata_force_tbl[i]; |
| 390 | |
| 391 | if (fe->port != -1 && fe->port != dev->link->ap->print_id) |
| 392 | continue; |
| 393 | |
| 394 | if (fe->device != -1 && fe->device != devno && |
| 395 | fe->device != alt_devno) |
| 396 | continue; |
| 397 | |
| 398 | if (!(~dev->horkage & fe->param.horkage_on) && |
| 399 | !(dev->horkage & fe->param.horkage_off)) |
| 400 | continue; |
| 401 | |
| 402 | dev->horkage |= fe->param.horkage_on; |
| 403 | dev->horkage &= ~fe->param.horkage_off; |
| 404 | |
| 405 | ata_dev_printk(dev, KERN_NOTICE, |
| 406 | "FORCE: horkage modified (%s)\n", fe->param.name); |
| 407 | } |
| 408 | } |
| 409 | |
| 410 | /** |
Tejun Heo | 436d34b | 2008-04-02 17:28:46 +0900 | [diff] [blame] | 411 | * atapi_cmd_type - Determine ATAPI command type from SCSI opcode |
| 412 | * @opcode: SCSI opcode |
| 413 | * |
| 414 | * Determine ATAPI command type from @opcode. |
| 415 | * |
| 416 | * LOCKING: |
| 417 | * None. |
| 418 | * |
| 419 | * RETURNS: |
| 420 | * ATAPI_{READ|WRITE|READ_CD|PASS_THRU|MISC} |
| 421 | */ |
| 422 | int atapi_cmd_type(u8 opcode) |
| 423 | { |
| 424 | switch (opcode) { |
| 425 | case GPCMD_READ_10: |
| 426 | case GPCMD_READ_12: |
| 427 | return ATAPI_READ; |
| 428 | |
| 429 | case GPCMD_WRITE_10: |
| 430 | case GPCMD_WRITE_12: |
| 431 | case GPCMD_WRITE_AND_VERIFY_10: |
| 432 | return ATAPI_WRITE; |
| 433 | |
| 434 | case GPCMD_READ_CD: |
| 435 | case GPCMD_READ_CD_MSF: |
| 436 | return ATAPI_READ_CD; |
| 437 | |
Tejun Heo | e52dcc4 | 2008-04-02 17:35:19 +0900 | [diff] [blame] | 438 | case ATA_16: |
| 439 | case ATA_12: |
| 440 | if (atapi_passthru16) |
| 441 | return ATAPI_PASS_THRU; |
| 442 | /* fall thru */ |
Tejun Heo | 436d34b | 2008-04-02 17:28:46 +0900 | [diff] [blame] | 443 | default: |
| 444 | return ATAPI_MISC; |
| 445 | } |
| 446 | } |
| 447 | |
| 448 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | * ata_tf_to_fis - Convert ATA taskfile to SATA FIS structure |
| 450 | * @tf: Taskfile to convert |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | * @pmp: Port multiplier port |
Tejun Heo | 9977126 | 2007-07-16 14:29:38 +0900 | [diff] [blame] | 452 | * @is_cmd: This FIS is for command |
| 453 | * @fis: Buffer into which data will output |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | * |
| 455 | * Converts a standard ATA taskfile to a Serial ATA |
| 456 | * FIS structure (Register - Host to Device). |
| 457 | * |
| 458 | * LOCKING: |
| 459 | * Inherited from caller. |
| 460 | */ |
Tejun Heo | 9977126 | 2007-07-16 14:29:38 +0900 | [diff] [blame] | 461 | 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] | 462 | { |
Tejun Heo | 9977126 | 2007-07-16 14:29:38 +0900 | [diff] [blame] | 463 | fis[0] = 0x27; /* Register - Host to Device FIS */ |
| 464 | fis[1] = pmp & 0xf; /* Port multiplier number*/ |
| 465 | if (is_cmd) |
| 466 | fis[1] |= (1 << 7); /* bit 7 indicates Command FIS */ |
| 467 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | fis[2] = tf->command; |
| 469 | fis[3] = tf->feature; |
| 470 | |
| 471 | fis[4] = tf->lbal; |
| 472 | fis[5] = tf->lbam; |
| 473 | fis[6] = tf->lbah; |
| 474 | fis[7] = tf->device; |
| 475 | |
| 476 | fis[8] = tf->hob_lbal; |
| 477 | fis[9] = tf->hob_lbam; |
| 478 | fis[10] = tf->hob_lbah; |
| 479 | fis[11] = tf->hob_feature; |
| 480 | |
| 481 | fis[12] = tf->nsect; |
| 482 | fis[13] = tf->hob_nsect; |
| 483 | fis[14] = 0; |
| 484 | fis[15] = tf->ctl; |
| 485 | |
| 486 | fis[16] = 0; |
| 487 | fis[17] = 0; |
| 488 | fis[18] = 0; |
| 489 | fis[19] = 0; |
| 490 | } |
| 491 | |
| 492 | /** |
| 493 | * ata_tf_from_fis - Convert SATA FIS to ATA taskfile |
| 494 | * @fis: Buffer from which data will be input |
| 495 | * @tf: Taskfile to output |
| 496 | * |
Mark Lord | e12a1be | 2005-11-12 18:55:45 -0500 | [diff] [blame] | 497 | * Converts a serial ATA FIS structure to a standard ATA taskfile. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | * |
| 499 | * LOCKING: |
| 500 | * Inherited from caller. |
| 501 | */ |
| 502 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 503 | void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | { |
| 505 | tf->command = fis[2]; /* status */ |
| 506 | tf->feature = fis[3]; /* error */ |
| 507 | |
| 508 | tf->lbal = fis[4]; |
| 509 | tf->lbam = fis[5]; |
| 510 | tf->lbah = fis[6]; |
| 511 | tf->device = fis[7]; |
| 512 | |
| 513 | tf->hob_lbal = fis[8]; |
| 514 | tf->hob_lbam = fis[9]; |
| 515 | tf->hob_lbah = fis[10]; |
| 516 | |
| 517 | tf->nsect = fis[12]; |
| 518 | tf->hob_nsect = fis[13]; |
| 519 | } |
| 520 | |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 521 | static const u8 ata_rw_cmds[] = { |
| 522 | /* pio multi */ |
| 523 | ATA_CMD_READ_MULTI, |
| 524 | ATA_CMD_WRITE_MULTI, |
| 525 | ATA_CMD_READ_MULTI_EXT, |
| 526 | ATA_CMD_WRITE_MULTI_EXT, |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 527 | 0, |
| 528 | 0, |
| 529 | 0, |
| 530 | ATA_CMD_WRITE_MULTI_FUA_EXT, |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 531 | /* pio */ |
| 532 | ATA_CMD_PIO_READ, |
| 533 | ATA_CMD_PIO_WRITE, |
| 534 | ATA_CMD_PIO_READ_EXT, |
| 535 | ATA_CMD_PIO_WRITE_EXT, |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 536 | 0, |
| 537 | 0, |
| 538 | 0, |
| 539 | 0, |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 540 | /* dma */ |
| 541 | ATA_CMD_READ, |
| 542 | ATA_CMD_WRITE, |
| 543 | ATA_CMD_READ_EXT, |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 544 | ATA_CMD_WRITE_EXT, |
| 545 | 0, |
| 546 | 0, |
| 547 | 0, |
| 548 | ATA_CMD_WRITE_FUA_EXT |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 549 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | |
| 551 | /** |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 552 | * ata_rwcmd_protocol - set taskfile r/w commands and protocol |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 553 | * @tf: command to examine and configure |
| 554 | * @dev: device tf belongs to |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | * |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 556 | * Examine the device configuration and tf->flags to calculate |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 557 | * the proper read/write commands and protocol to use. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | * |
| 559 | * LOCKING: |
| 560 | * caller. |
| 561 | */ |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 562 | 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] | 563 | { |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 564 | u8 cmd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 566 | int index, fua, lba48, write; |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 567 | |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 568 | fua = (tf->flags & ATA_TFLAG_FUA) ? 4 : 0; |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 569 | lba48 = (tf->flags & ATA_TFLAG_LBA48) ? 2 : 0; |
| 570 | write = (tf->flags & ATA_TFLAG_WRITE) ? 1 : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 572 | if (dev->flags & ATA_DFLAG_PIO) { |
| 573 | tf->protocol = ATA_PROT_PIO; |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 574 | index = dev->multi_count ? 0 : 8; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 575 | } else if (lba48 && (dev->link->ap->flags & ATA_FLAG_PIO_LBA48)) { |
Alan Cox | 8d238e0 | 2006-01-17 20:50:31 +0000 | [diff] [blame] | 576 | /* Unable to use DMA due to host limitation */ |
| 577 | tf->protocol = ATA_PROT_PIO; |
Albert Lee | 0565c26 | 2006-02-13 18:55:25 +0800 | [diff] [blame] | 578 | index = dev->multi_count ? 0 : 8; |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 579 | } else { |
| 580 | tf->protocol = ATA_PROT_DMA; |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 581 | index = 16; |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 582 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 584 | cmd = ata_rw_cmds[index + fua + lba48 + write]; |
| 585 | if (cmd) { |
| 586 | tf->command = cmd; |
| 587 | return 0; |
| 588 | } |
| 589 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | } |
| 591 | |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 592 | /** |
Tejun Heo | 35b649f | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 593 | * ata_tf_read_block - Read block address from ATA taskfile |
| 594 | * @tf: ATA taskfile of interest |
| 595 | * @dev: ATA device @tf belongs to |
| 596 | * |
| 597 | * LOCKING: |
| 598 | * None. |
| 599 | * |
| 600 | * Read block address from @tf. This function can handle all |
| 601 | * three address formats - LBA, LBA48 and CHS. tf->protocol and |
| 602 | * flags select the address format to use. |
| 603 | * |
| 604 | * RETURNS: |
| 605 | * Block address read from @tf. |
| 606 | */ |
| 607 | u64 ata_tf_read_block(struct ata_taskfile *tf, struct ata_device *dev) |
| 608 | { |
| 609 | u64 block = 0; |
| 610 | |
| 611 | if (tf->flags & ATA_TFLAG_LBA) { |
| 612 | if (tf->flags & ATA_TFLAG_LBA48) { |
| 613 | block |= (u64)tf->hob_lbah << 40; |
| 614 | block |= (u64)tf->hob_lbam << 32; |
Roland Dreier | 44901a9 | 2008-11-04 10:34:48 -0800 | [diff] [blame] | 615 | block |= (u64)tf->hob_lbal << 24; |
Tejun Heo | 35b649f | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 616 | } else |
| 617 | block |= (tf->device & 0xf) << 24; |
| 618 | |
| 619 | block |= tf->lbah << 16; |
| 620 | block |= tf->lbam << 8; |
| 621 | block |= tf->lbal; |
| 622 | } else { |
| 623 | u32 cyl, head, sect; |
| 624 | |
| 625 | cyl = tf->lbam | (tf->lbah << 8); |
| 626 | head = tf->device & 0xf; |
| 627 | sect = tf->lbal; |
| 628 | |
| 629 | block = (cyl * dev->heads + head) * dev->sectors + sect; |
| 630 | } |
| 631 | |
| 632 | return block; |
| 633 | } |
| 634 | |
| 635 | /** |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 636 | * ata_build_rw_tf - Build ATA taskfile for given read/write request |
| 637 | * @tf: Target ATA taskfile |
| 638 | * @dev: ATA device @tf belongs to |
| 639 | * @block: Block address |
| 640 | * @n_block: Number of blocks |
| 641 | * @tf_flags: RW/FUA etc... |
| 642 | * @tag: tag |
| 643 | * |
| 644 | * LOCKING: |
| 645 | * None. |
| 646 | * |
| 647 | * Build ATA taskfile @tf for read/write request described by |
| 648 | * @block, @n_block, @tf_flags and @tag on @dev. |
| 649 | * |
| 650 | * RETURNS: |
| 651 | * |
| 652 | * 0 on success, -ERANGE if the request is too large for @dev, |
| 653 | * -EINVAL if the request is invalid. |
| 654 | */ |
| 655 | int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev, |
| 656 | u64 block, u32 n_block, unsigned int tf_flags, |
| 657 | unsigned int tag) |
| 658 | { |
| 659 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 660 | tf->flags |= tf_flags; |
| 661 | |
Tejun Heo | 6d1245b | 2007-02-20 23:20:27 +0900 | [diff] [blame] | 662 | if (ata_ncq_enabled(dev) && likely(tag != ATA_TAG_INTERNAL)) { |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 663 | /* yay, NCQ */ |
| 664 | if (!lba_48_ok(block, n_block)) |
| 665 | return -ERANGE; |
| 666 | |
| 667 | tf->protocol = ATA_PROT_NCQ; |
| 668 | tf->flags |= ATA_TFLAG_LBA | ATA_TFLAG_LBA48; |
| 669 | |
| 670 | if (tf->flags & ATA_TFLAG_WRITE) |
| 671 | tf->command = ATA_CMD_FPDMA_WRITE; |
| 672 | else |
| 673 | tf->command = ATA_CMD_FPDMA_READ; |
| 674 | |
| 675 | tf->nsect = tag << 3; |
| 676 | tf->hob_feature = (n_block >> 8) & 0xff; |
| 677 | tf->feature = n_block & 0xff; |
| 678 | |
| 679 | tf->hob_lbah = (block >> 40) & 0xff; |
| 680 | tf->hob_lbam = (block >> 32) & 0xff; |
| 681 | tf->hob_lbal = (block >> 24) & 0xff; |
| 682 | tf->lbah = (block >> 16) & 0xff; |
| 683 | tf->lbam = (block >> 8) & 0xff; |
| 684 | tf->lbal = block & 0xff; |
| 685 | |
| 686 | tf->device = 1 << 6; |
| 687 | if (tf->flags & ATA_TFLAG_FUA) |
| 688 | tf->device |= 1 << 7; |
| 689 | } else if (dev->flags & ATA_DFLAG_LBA) { |
| 690 | tf->flags |= ATA_TFLAG_LBA; |
| 691 | |
| 692 | if (lba_28_ok(block, n_block)) { |
| 693 | /* use LBA28 */ |
| 694 | tf->device |= (block >> 24) & 0xf; |
| 695 | } else if (lba_48_ok(block, n_block)) { |
| 696 | if (!(dev->flags & ATA_DFLAG_LBA48)) |
| 697 | return -ERANGE; |
| 698 | |
| 699 | /* use LBA48 */ |
| 700 | tf->flags |= ATA_TFLAG_LBA48; |
| 701 | |
| 702 | tf->hob_nsect = (n_block >> 8) & 0xff; |
| 703 | |
| 704 | tf->hob_lbah = (block >> 40) & 0xff; |
| 705 | tf->hob_lbam = (block >> 32) & 0xff; |
| 706 | tf->hob_lbal = (block >> 24) & 0xff; |
| 707 | } else |
| 708 | /* request too large even for LBA48 */ |
| 709 | return -ERANGE; |
| 710 | |
| 711 | if (unlikely(ata_rwcmd_protocol(tf, dev) < 0)) |
| 712 | return -EINVAL; |
| 713 | |
| 714 | tf->nsect = n_block & 0xff; |
| 715 | |
| 716 | tf->lbah = (block >> 16) & 0xff; |
| 717 | tf->lbam = (block >> 8) & 0xff; |
| 718 | tf->lbal = block & 0xff; |
| 719 | |
| 720 | tf->device |= ATA_LBA; |
| 721 | } else { |
| 722 | /* CHS */ |
| 723 | u32 sect, head, cyl, track; |
| 724 | |
| 725 | /* The request -may- be too large for CHS addressing. */ |
| 726 | if (!lba_28_ok(block, n_block)) |
| 727 | return -ERANGE; |
| 728 | |
| 729 | if (unlikely(ata_rwcmd_protocol(tf, dev) < 0)) |
| 730 | return -EINVAL; |
| 731 | |
| 732 | /* Convert LBA to CHS */ |
| 733 | track = (u32)block / dev->sectors; |
| 734 | cyl = track / dev->heads; |
| 735 | head = track % dev->heads; |
| 736 | sect = (u32)block % dev->sectors + 1; |
| 737 | |
| 738 | DPRINTK("block %u track %u cyl %u head %u sect %u\n", |
| 739 | (u32)block, track, cyl, head, sect); |
| 740 | |
| 741 | /* Check whether the converted CHS can fit. |
| 742 | Cylinder: 0-65535 |
| 743 | Head: 0-15 |
| 744 | Sector: 1-255*/ |
| 745 | if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect)) |
| 746 | return -ERANGE; |
| 747 | |
| 748 | tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */ |
| 749 | tf->lbal = sect; |
| 750 | tf->lbam = cyl; |
| 751 | tf->lbah = cyl >> 8; |
| 752 | tf->device |= head; |
| 753 | } |
| 754 | |
| 755 | return 0; |
| 756 | } |
| 757 | |
| 758 | /** |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 759 | * ata_pack_xfermask - Pack pio, mwdma and udma masks into xfer_mask |
| 760 | * @pio_mask: pio_mask |
| 761 | * @mwdma_mask: mwdma_mask |
| 762 | * @udma_mask: udma_mask |
| 763 | * |
| 764 | * Pack @pio_mask, @mwdma_mask and @udma_mask into a single |
| 765 | * unsigned int xfer_mask. |
| 766 | * |
| 767 | * LOCKING: |
| 768 | * None. |
| 769 | * |
| 770 | * RETURNS: |
| 771 | * Packed xfer_mask. |
| 772 | */ |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 773 | unsigned long ata_pack_xfermask(unsigned long pio_mask, |
| 774 | unsigned long mwdma_mask, |
| 775 | unsigned long udma_mask) |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 776 | { |
| 777 | return ((pio_mask << ATA_SHIFT_PIO) & ATA_MASK_PIO) | |
| 778 | ((mwdma_mask << ATA_SHIFT_MWDMA) & ATA_MASK_MWDMA) | |
| 779 | ((udma_mask << ATA_SHIFT_UDMA) & ATA_MASK_UDMA); |
| 780 | } |
| 781 | |
Tejun Heo | c0489e4 | 2006-03-24 14:07:49 +0900 | [diff] [blame] | 782 | /** |
| 783 | * ata_unpack_xfermask - Unpack xfer_mask into pio, mwdma and udma masks |
| 784 | * @xfer_mask: xfer_mask to unpack |
| 785 | * @pio_mask: resulting pio_mask |
| 786 | * @mwdma_mask: resulting mwdma_mask |
| 787 | * @udma_mask: resulting udma_mask |
| 788 | * |
| 789 | * Unpack @xfer_mask into @pio_mask, @mwdma_mask and @udma_mask. |
| 790 | * Any NULL distination masks will be ignored. |
| 791 | */ |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 792 | void ata_unpack_xfermask(unsigned long xfer_mask, unsigned long *pio_mask, |
| 793 | unsigned long *mwdma_mask, unsigned long *udma_mask) |
Tejun Heo | c0489e4 | 2006-03-24 14:07:49 +0900 | [diff] [blame] | 794 | { |
| 795 | if (pio_mask) |
| 796 | *pio_mask = (xfer_mask & ATA_MASK_PIO) >> ATA_SHIFT_PIO; |
| 797 | if (mwdma_mask) |
| 798 | *mwdma_mask = (xfer_mask & ATA_MASK_MWDMA) >> ATA_SHIFT_MWDMA; |
| 799 | if (udma_mask) |
| 800 | *udma_mask = (xfer_mask & ATA_MASK_UDMA) >> ATA_SHIFT_UDMA; |
| 801 | } |
| 802 | |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 803 | static const struct ata_xfer_ent { |
Tejun Heo | be9a50c | 2006-03-31 22:48:52 +0900 | [diff] [blame] | 804 | int shift, bits; |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 805 | u8 base; |
| 806 | } ata_xfer_tbl[] = { |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 807 | { ATA_SHIFT_PIO, ATA_NR_PIO_MODES, XFER_PIO_0 }, |
| 808 | { ATA_SHIFT_MWDMA, ATA_NR_MWDMA_MODES, XFER_MW_DMA_0 }, |
| 809 | { ATA_SHIFT_UDMA, ATA_NR_UDMA_MODES, XFER_UDMA_0 }, |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 810 | { -1, }, |
| 811 | }; |
| 812 | |
| 813 | /** |
| 814 | * ata_xfer_mask2mode - Find matching XFER_* for the given xfer_mask |
| 815 | * @xfer_mask: xfer_mask of interest |
| 816 | * |
| 817 | * Return matching XFER_* value for @xfer_mask. Only the highest |
| 818 | * bit of @xfer_mask is considered. |
| 819 | * |
| 820 | * LOCKING: |
| 821 | * None. |
| 822 | * |
| 823 | * RETURNS: |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 824 | * Matching XFER_* value, 0xff if no match found. |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 825 | */ |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 826 | u8 ata_xfer_mask2mode(unsigned long xfer_mask) |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 827 | { |
| 828 | int highbit = fls(xfer_mask) - 1; |
| 829 | const struct ata_xfer_ent *ent; |
| 830 | |
| 831 | for (ent = ata_xfer_tbl; ent->shift >= 0; ent++) |
| 832 | if (highbit >= ent->shift && highbit < ent->shift + ent->bits) |
| 833 | return ent->base + highbit - ent->shift; |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 834 | return 0xff; |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 835 | } |
| 836 | |
| 837 | /** |
| 838 | * ata_xfer_mode2mask - Find matching xfer_mask for XFER_* |
| 839 | * @xfer_mode: XFER_* of interest |
| 840 | * |
| 841 | * Return matching xfer_mask for @xfer_mode. |
| 842 | * |
| 843 | * LOCKING: |
| 844 | * None. |
| 845 | * |
| 846 | * RETURNS: |
| 847 | * Matching xfer_mask, 0 if no match found. |
| 848 | */ |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 849 | unsigned long ata_xfer_mode2mask(u8 xfer_mode) |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 850 | { |
| 851 | const struct ata_xfer_ent *ent; |
| 852 | |
| 853 | for (ent = ata_xfer_tbl; ent->shift >= 0; ent++) |
| 854 | if (xfer_mode >= ent->base && xfer_mode < ent->base + ent->bits) |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 855 | return ((2 << (ent->shift + xfer_mode - ent->base)) - 1) |
| 856 | & ~((1 << ent->shift) - 1); |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 857 | return 0; |
| 858 | } |
| 859 | |
| 860 | /** |
| 861 | * ata_xfer_mode2shift - Find matching xfer_shift for XFER_* |
| 862 | * @xfer_mode: XFER_* of interest |
| 863 | * |
| 864 | * Return matching xfer_shift for @xfer_mode. |
| 865 | * |
| 866 | * LOCKING: |
| 867 | * None. |
| 868 | * |
| 869 | * RETURNS: |
| 870 | * Matching xfer_shift, -1 if no match found. |
| 871 | */ |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 872 | int ata_xfer_mode2shift(unsigned long xfer_mode) |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 873 | { |
| 874 | const struct ata_xfer_ent *ent; |
| 875 | |
| 876 | for (ent = ata_xfer_tbl; ent->shift >= 0; ent++) |
| 877 | if (xfer_mode >= ent->base && xfer_mode < ent->base + ent->bits) |
| 878 | return ent->shift; |
| 879 | return -1; |
| 880 | } |
| 881 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | /** |
Tejun Heo | 1da7b0d | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 883 | * ata_mode_string - convert xfer_mask to string |
| 884 | * @xfer_mask: mask of bits supported; only highest bit counts. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | * |
| 886 | * Determine string which represents the highest speed |
Tejun Heo | 1da7b0d | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 887 | * (highest bit in @modemask). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | * |
| 889 | * LOCKING: |
| 890 | * None. |
| 891 | * |
| 892 | * RETURNS: |
| 893 | * Constant C string representing highest speed listed in |
Tejun Heo | 1da7b0d | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 894 | * @mode_mask, or the constant C string "<n/a>". |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | */ |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 896 | const char *ata_mode_string(unsigned long xfer_mask) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | { |
Tejun Heo | 75f554b | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 898 | static const char * const xfer_mode_str[] = { |
| 899 | "PIO0", |
| 900 | "PIO1", |
| 901 | "PIO2", |
| 902 | "PIO3", |
| 903 | "PIO4", |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 904 | "PIO5", |
| 905 | "PIO6", |
Tejun Heo | 75f554b | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 906 | "MWDMA0", |
| 907 | "MWDMA1", |
| 908 | "MWDMA2", |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 909 | "MWDMA3", |
| 910 | "MWDMA4", |
Tejun Heo | 75f554b | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 911 | "UDMA/16", |
| 912 | "UDMA/25", |
| 913 | "UDMA/33", |
| 914 | "UDMA/44", |
| 915 | "UDMA/66", |
| 916 | "UDMA/100", |
| 917 | "UDMA/133", |
| 918 | "UDMA7", |
| 919 | }; |
Tejun Heo | 1da7b0d | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 920 | int highbit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | |
Tejun Heo | 1da7b0d | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 922 | highbit = fls(xfer_mask) - 1; |
| 923 | if (highbit >= 0 && highbit < ARRAY_SIZE(xfer_mode_str)) |
| 924 | return xfer_mode_str[highbit]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | return "<n/a>"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | } |
| 927 | |
Tejun Heo | 4c360c8 | 2006-04-01 01:38:17 +0900 | [diff] [blame] | 928 | static const char *sata_spd_string(unsigned int spd) |
| 929 | { |
| 930 | static const char * const spd_str[] = { |
| 931 | "1.5 Gbps", |
| 932 | "3.0 Gbps", |
| 933 | }; |
| 934 | |
| 935 | if (spd == 0 || (spd - 1) >= ARRAY_SIZE(spd_str)) |
| 936 | return "<unknown>"; |
| 937 | return spd_str[spd - 1]; |
| 938 | } |
| 939 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 940 | void ata_dev_disable(struct ata_device *dev) |
Tejun Heo | 0b8efb0 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 941 | { |
Tejun Heo | 09d7f9b | 2007-06-25 23:34:02 +0900 | [diff] [blame] | 942 | if (ata_dev_enabled(dev)) { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 943 | if (ata_msg_drv(dev->link->ap)) |
Tejun Heo | 09d7f9b | 2007-06-25 23:34:02 +0900 | [diff] [blame] | 944 | ata_dev_printk(dev, KERN_WARNING, "disabled\n"); |
Tejun Heo | 562f0c2 | 2007-12-15 15:05:01 +0900 | [diff] [blame] | 945 | ata_acpi_on_disable(dev); |
Tejun Heo | 4ae72a1 | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 946 | ata_down_xfermask_limit(dev, ATA_DNXFER_FORCE_PIO0 | |
| 947 | ATA_DNXFER_QUIET); |
Tejun Heo | 0b8efb0 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 948 | dev->class++; |
| 949 | } |
| 950 | } |
| 951 | |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 952 | static int ata_dev_set_dipm(struct ata_device *dev, enum link_pm policy) |
| 953 | { |
| 954 | struct ata_link *link = dev->link; |
| 955 | struct ata_port *ap = link->ap; |
| 956 | u32 scontrol; |
| 957 | unsigned int err_mask; |
| 958 | int rc; |
| 959 | |
| 960 | /* |
| 961 | * disallow DIPM for drivers which haven't set |
| 962 | * ATA_FLAG_IPM. This is because when DIPM is enabled, |
| 963 | * phy ready will be set in the interrupt status on |
| 964 | * state changes, which will cause some drivers to |
| 965 | * think there are errors - additionally drivers will |
| 966 | * need to disable hot plug. |
| 967 | */ |
| 968 | if (!(ap->flags & ATA_FLAG_IPM) || !ata_dev_enabled(dev)) { |
| 969 | ap->pm_policy = NOT_AVAILABLE; |
| 970 | return -EINVAL; |
| 971 | } |
| 972 | |
| 973 | /* |
| 974 | * For DIPM, we will only enable it for the |
| 975 | * min_power setting. |
| 976 | * |
| 977 | * Why? Because Disks are too stupid to know that |
| 978 | * If the host rejects a request to go to SLUMBER |
| 979 | * they should retry at PARTIAL, and instead it |
| 980 | * just would give up. So, for medium_power to |
| 981 | * work at all, we need to only allow HIPM. |
| 982 | */ |
| 983 | rc = sata_scr_read(link, SCR_CONTROL, &scontrol); |
| 984 | if (rc) |
| 985 | return rc; |
| 986 | |
| 987 | switch (policy) { |
| 988 | case MIN_POWER: |
| 989 | /* no restrictions on IPM transitions */ |
| 990 | scontrol &= ~(0x3 << 8); |
| 991 | rc = sata_scr_write(link, SCR_CONTROL, scontrol); |
| 992 | if (rc) |
| 993 | return rc; |
| 994 | |
| 995 | /* enable DIPM */ |
| 996 | if (dev->flags & ATA_DFLAG_DIPM) |
| 997 | err_mask = ata_dev_set_feature(dev, |
| 998 | SETFEATURES_SATA_ENABLE, SATA_DIPM); |
| 999 | break; |
| 1000 | case MEDIUM_POWER: |
| 1001 | /* allow IPM to PARTIAL */ |
| 1002 | scontrol &= ~(0x1 << 8); |
| 1003 | scontrol |= (0x2 << 8); |
| 1004 | rc = sata_scr_write(link, SCR_CONTROL, scontrol); |
| 1005 | if (rc) |
| 1006 | return rc; |
| 1007 | |
Kristen Carlson Accardi | f5456b6 | 2007-11-02 16:37:08 -0700 | [diff] [blame] | 1008 | /* |
| 1009 | * we don't have to disable DIPM since IPM flags |
| 1010 | * disallow transitions to SLUMBER, which effectively |
| 1011 | * disable DIPM if it does not support PARTIAL |
| 1012 | */ |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1013 | break; |
| 1014 | case NOT_AVAILABLE: |
| 1015 | case MAX_PERFORMANCE: |
| 1016 | /* disable all IPM transitions */ |
| 1017 | scontrol |= (0x3 << 8); |
| 1018 | rc = sata_scr_write(link, SCR_CONTROL, scontrol); |
| 1019 | if (rc) |
| 1020 | return rc; |
| 1021 | |
Kristen Carlson Accardi | f5456b6 | 2007-11-02 16:37:08 -0700 | [diff] [blame] | 1022 | /* |
| 1023 | * we don't have to disable DIPM since IPM flags |
| 1024 | * disallow all transitions which effectively |
| 1025 | * disable DIPM anyway. |
| 1026 | */ |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1027 | break; |
| 1028 | } |
| 1029 | |
| 1030 | /* FIXME: handle SET FEATURES failure */ |
| 1031 | (void) err_mask; |
| 1032 | |
| 1033 | return 0; |
| 1034 | } |
| 1035 | |
| 1036 | /** |
| 1037 | * ata_dev_enable_pm - enable SATA interface power management |
Stephen Hemminger | 48166fd | 2007-10-31 10:00:27 -0700 | [diff] [blame] | 1038 | * @dev: device to enable power management |
| 1039 | * @policy: the link power management policy |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1040 | * |
| 1041 | * Enable SATA Interface power management. This will enable |
| 1042 | * Device Interface Power Management (DIPM) for min_power |
| 1043 | * policy, and then call driver specific callbacks for |
| 1044 | * enabling Host Initiated Power management. |
| 1045 | * |
| 1046 | * Locking: Caller. |
| 1047 | * Returns: -EINVAL if IPM is not supported, 0 otherwise. |
| 1048 | */ |
| 1049 | void ata_dev_enable_pm(struct ata_device *dev, enum link_pm policy) |
| 1050 | { |
| 1051 | int rc = 0; |
| 1052 | struct ata_port *ap = dev->link->ap; |
| 1053 | |
| 1054 | /* set HIPM first, then DIPM */ |
| 1055 | if (ap->ops->enable_pm) |
| 1056 | rc = ap->ops->enable_pm(ap, policy); |
| 1057 | if (rc) |
| 1058 | goto enable_pm_out; |
| 1059 | rc = ata_dev_set_dipm(dev, policy); |
| 1060 | |
| 1061 | enable_pm_out: |
| 1062 | if (rc) |
| 1063 | ap->pm_policy = MAX_PERFORMANCE; |
| 1064 | else |
| 1065 | ap->pm_policy = policy; |
| 1066 | return /* rc */; /* hopefully we can use 'rc' eventually */ |
| 1067 | } |
| 1068 | |
Stephen Rothwell | 1992a5e | 2007-10-31 14:53:32 +1100 | [diff] [blame] | 1069 | #ifdef CONFIG_PM |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1070 | /** |
| 1071 | * ata_dev_disable_pm - disable SATA interface power management |
Stephen Hemminger | 48166fd | 2007-10-31 10:00:27 -0700 | [diff] [blame] | 1072 | * @dev: device to disable power management |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1073 | * |
| 1074 | * Disable SATA Interface power management. This will disable |
| 1075 | * Device Interface Power Management (DIPM) without changing |
| 1076 | * policy, call driver specific callbacks for disabling Host |
| 1077 | * Initiated Power management. |
| 1078 | * |
| 1079 | * Locking: Caller. |
| 1080 | * Returns: void |
| 1081 | */ |
| 1082 | static void ata_dev_disable_pm(struct ata_device *dev) |
| 1083 | { |
| 1084 | struct ata_port *ap = dev->link->ap; |
| 1085 | |
| 1086 | ata_dev_set_dipm(dev, MAX_PERFORMANCE); |
| 1087 | if (ap->ops->disable_pm) |
| 1088 | ap->ops->disable_pm(ap); |
| 1089 | } |
Stephen Rothwell | 1992a5e | 2007-10-31 14:53:32 +1100 | [diff] [blame] | 1090 | #endif /* CONFIG_PM */ |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1091 | |
| 1092 | void ata_lpm_schedule(struct ata_port *ap, enum link_pm policy) |
| 1093 | { |
| 1094 | ap->pm_policy = policy; |
Tejun Heo | 3ec25eb | 2008-03-27 18:37:14 +0900 | [diff] [blame] | 1095 | ap->link.eh_info.action |= ATA_EH_LPM; |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1096 | ap->link.eh_info.flags |= ATA_EHI_NO_AUTOPSY; |
| 1097 | ata_port_schedule_eh(ap); |
| 1098 | } |
| 1099 | |
Stephen Rothwell | 1992a5e | 2007-10-31 14:53:32 +1100 | [diff] [blame] | 1100 | #ifdef CONFIG_PM |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1101 | static void ata_lpm_enable(struct ata_host *host) |
| 1102 | { |
| 1103 | struct ata_link *link; |
| 1104 | struct ata_port *ap; |
| 1105 | struct ata_device *dev; |
| 1106 | int i; |
| 1107 | |
| 1108 | for (i = 0; i < host->n_ports; i++) { |
| 1109 | ap = host->ports[i]; |
| 1110 | ata_port_for_each_link(link, ap) { |
| 1111 | ata_link_for_each_dev(dev, link) |
| 1112 | ata_dev_disable_pm(dev); |
| 1113 | } |
| 1114 | } |
| 1115 | } |
| 1116 | |
| 1117 | static void ata_lpm_disable(struct ata_host *host) |
| 1118 | { |
| 1119 | int i; |
| 1120 | |
| 1121 | for (i = 0; i < host->n_ports; i++) { |
| 1122 | struct ata_port *ap = host->ports[i]; |
| 1123 | ata_lpm_schedule(ap, ap->pm_policy); |
| 1124 | } |
| 1125 | } |
Stephen Rothwell | 1992a5e | 2007-10-31 14:53:32 +1100 | [diff] [blame] | 1126 | #endif /* CONFIG_PM */ |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1127 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1128 | /** |
| 1129 | * ata_dev_classify - determine device type based on ATA-spec signature |
| 1130 | * @tf: ATA taskfile register set for device to be identified |
| 1131 | * |
| 1132 | * Determine from taskfile register contents whether a device is |
| 1133 | * ATA or ATAPI, as per "Signature and persistence" section |
| 1134 | * of ATA/PI spec (volume 1, sect 5.14). |
| 1135 | * |
| 1136 | * LOCKING: |
| 1137 | * None. |
| 1138 | * |
| 1139 | * RETURNS: |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 1140 | * Device type, %ATA_DEV_ATA, %ATA_DEV_ATAPI, %ATA_DEV_PMP or |
| 1141 | * %ATA_DEV_UNKNOWN the event of failure. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | */ |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 1143 | unsigned int ata_dev_classify(const struct ata_taskfile *tf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1144 | { |
| 1145 | /* Apple's open source Darwin code hints that some devices only |
| 1146 | * put a proper signature into the LBA mid/high registers, |
| 1147 | * So, we only check those. It's sufficient for uniqueness. |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 1148 | * |
| 1149 | * ATA/ATAPI-7 (d1532v1r1: Feb. 19, 2003) specified separate |
| 1150 | * signatures for ATA and ATAPI devices attached on SerialATA, |
| 1151 | * 0x3c/0xc3 and 0x69/0x96 respectively. However, SerialATA |
| 1152 | * spec has never mentioned about using different signatures |
| 1153 | * for ATA/ATAPI devices. Then, Serial ATA II: Port |
| 1154 | * Multiplier specification began to use 0x69/0x96 to identify |
| 1155 | * port multpliers and 0x3c/0xc3 to identify SEMB device. |
| 1156 | * ATA/ATAPI-7 dropped descriptions about 0x3c/0xc3 and |
| 1157 | * 0x69/0x96 shortly and described them as reserved for |
| 1158 | * SerialATA. |
| 1159 | * |
| 1160 | * We follow the current spec and consider that 0x69/0x96 |
| 1161 | * identifies a port multiplier and 0x3c/0xc3 a SEMB device. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1162 | */ |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 1163 | if ((tf->lbam == 0) && (tf->lbah == 0)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | DPRINTK("found ATA device by sig\n"); |
| 1165 | return ATA_DEV_ATA; |
| 1166 | } |
| 1167 | |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 1168 | if ((tf->lbam == 0x14) && (tf->lbah == 0xeb)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | DPRINTK("found ATAPI device by sig\n"); |
| 1170 | return ATA_DEV_ATAPI; |
| 1171 | } |
| 1172 | |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 1173 | if ((tf->lbam == 0x69) && (tf->lbah == 0x96)) { |
| 1174 | DPRINTK("found PMP device by sig\n"); |
| 1175 | return ATA_DEV_PMP; |
| 1176 | } |
| 1177 | |
| 1178 | if ((tf->lbam == 0x3c) && (tf->lbah == 0xc3)) { |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1179 | printk(KERN_INFO "ata: SEMB device ignored\n"); |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 1180 | return ATA_DEV_SEMB_UNSUP; /* not yet */ |
| 1181 | } |
| 1182 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1183 | DPRINTK("unknown device\n"); |
| 1184 | return ATA_DEV_UNKNOWN; |
| 1185 | } |
| 1186 | |
| 1187 | /** |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 1188 | * ata_id_string - Convert IDENTIFY DEVICE page into string |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1189 | * @id: IDENTIFY DEVICE results we will examine |
| 1190 | * @s: string into which data is output |
| 1191 | * @ofs: offset into identify device page |
| 1192 | * @len: length of string to return. must be an even number. |
| 1193 | * |
| 1194 | * The strings in the IDENTIFY DEVICE page are broken up into |
| 1195 | * 16-bit chunks. Run through the string, and output each |
| 1196 | * 8-bit chunk linearly, regardless of platform. |
| 1197 | * |
| 1198 | * LOCKING: |
| 1199 | * caller. |
| 1200 | */ |
| 1201 | |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 1202 | void ata_id_string(const u16 *id, unsigned char *s, |
| 1203 | unsigned int ofs, unsigned int len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1204 | { |
| 1205 | unsigned int c; |
| 1206 | |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 1207 | BUG_ON(len & 1); |
| 1208 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1209 | while (len > 0) { |
| 1210 | c = id[ofs] >> 8; |
| 1211 | *s = c; |
| 1212 | s++; |
| 1213 | |
| 1214 | c = id[ofs] & 0xff; |
| 1215 | *s = c; |
| 1216 | s++; |
| 1217 | |
| 1218 | ofs++; |
| 1219 | len -= 2; |
| 1220 | } |
| 1221 | } |
| 1222 | |
Tejun Heo | 0e949ff | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 1223 | /** |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 1224 | * ata_id_c_string - Convert IDENTIFY DEVICE page into C string |
Tejun Heo | 0e949ff | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 1225 | * @id: IDENTIFY DEVICE results we will examine |
| 1226 | * @s: string into which data is output |
| 1227 | * @ofs: offset into identify device page |
| 1228 | * @len: length of string to return. must be an odd number. |
| 1229 | * |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 1230 | * This function is identical to ata_id_string except that it |
Tejun Heo | 0e949ff | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 1231 | * trims trailing spaces and terminates the resulting string with |
| 1232 | * null. @len must be actual maximum length (even number) + 1. |
| 1233 | * |
| 1234 | * LOCKING: |
| 1235 | * caller. |
| 1236 | */ |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 1237 | void ata_id_c_string(const u16 *id, unsigned char *s, |
| 1238 | unsigned int ofs, unsigned int len) |
Tejun Heo | 0e949ff | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 1239 | { |
| 1240 | unsigned char *p; |
| 1241 | |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 1242 | ata_id_string(id, s, ofs, len - 1); |
Tejun Heo | 0e949ff | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 1243 | |
| 1244 | p = s + strnlen(s, len - 1); |
| 1245 | while (p > s && p[-1] == ' ') |
| 1246 | p--; |
| 1247 | *p = '\0'; |
| 1248 | } |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 1249 | |
Tejun Heo | db6f875 | 2007-09-03 12:31:58 +0900 | [diff] [blame] | 1250 | static u64 ata_id_n_sectors(const u16 *id) |
| 1251 | { |
| 1252 | if (ata_id_has_lba(id)) { |
| 1253 | if (ata_id_has_lba48(id)) |
| 1254 | return ata_id_u64(id, 100); |
| 1255 | else |
| 1256 | return ata_id_u32(id, 60); |
| 1257 | } else { |
| 1258 | if (ata_id_current_chs_valid(id)) |
| 1259 | return ata_id_u32(id, 57); |
| 1260 | else |
| 1261 | return id[1] * id[3] * id[6]; |
| 1262 | } |
| 1263 | } |
| 1264 | |
Tejun Heo | a5987e0 | 2008-03-27 19:14:23 +0900 | [diff] [blame] | 1265 | u64 ata_tf_to_lba48(const struct ata_taskfile *tf) |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1266 | { |
| 1267 | u64 sectors = 0; |
| 1268 | |
| 1269 | sectors |= ((u64)(tf->hob_lbah & 0xff)) << 40; |
| 1270 | sectors |= ((u64)(tf->hob_lbam & 0xff)) << 32; |
Roland Dreier | ba14a9c | 2008-10-28 16:52:20 -0700 | [diff] [blame] | 1271 | sectors |= ((u64)(tf->hob_lbal & 0xff)) << 24; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1272 | sectors |= (tf->lbah & 0xff) << 16; |
| 1273 | sectors |= (tf->lbam & 0xff) << 8; |
| 1274 | sectors |= (tf->lbal & 0xff); |
| 1275 | |
Tejun Heo | a5987e0 | 2008-03-27 19:14:23 +0900 | [diff] [blame] | 1276 | return sectors; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1277 | } |
| 1278 | |
Tejun Heo | a5987e0 | 2008-03-27 19:14:23 +0900 | [diff] [blame] | 1279 | u64 ata_tf_to_lba(const struct ata_taskfile *tf) |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1280 | { |
| 1281 | u64 sectors = 0; |
| 1282 | |
| 1283 | sectors |= (tf->device & 0x0f) << 24; |
| 1284 | sectors |= (tf->lbah & 0xff) << 16; |
| 1285 | sectors |= (tf->lbam & 0xff) << 8; |
| 1286 | sectors |= (tf->lbal & 0xff); |
| 1287 | |
Tejun Heo | a5987e0 | 2008-03-27 19:14:23 +0900 | [diff] [blame] | 1288 | return sectors; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1289 | } |
| 1290 | |
| 1291 | /** |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1292 | * ata_read_native_max_address - Read native max address |
| 1293 | * @dev: target device |
| 1294 | * @max_sectors: out parameter for the result native max address |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1295 | * |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1296 | * Perform an LBA48 or LBA28 native size query upon the device in |
| 1297 | * question. |
| 1298 | * |
| 1299 | * RETURNS: |
| 1300 | * 0 on success, -EACCES if command is aborted by the drive. |
| 1301 | * -EIO on other errors. |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1302 | */ |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1303 | 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] | 1304 | { |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1305 | unsigned int err_mask; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1306 | struct ata_taskfile tf; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1307 | int lba48 = ata_id_has_lba48(dev->id); |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1308 | |
| 1309 | ata_tf_init(dev, &tf); |
| 1310 | |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1311 | /* always clear all address registers */ |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1312 | tf.flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1313 | |
| 1314 | if (lba48) { |
| 1315 | tf.command = ATA_CMD_READ_NATIVE_MAX_EXT; |
| 1316 | tf.flags |= ATA_TFLAG_LBA48; |
| 1317 | } else |
| 1318 | tf.command = ATA_CMD_READ_NATIVE_MAX; |
| 1319 | |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1320 | tf.protocol |= ATA_PROT_NODATA; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1321 | tf.device |= ATA_LBA; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1322 | |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1323 | 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] | 1324 | if (err_mask) { |
| 1325 | ata_dev_printk(dev, KERN_WARNING, "failed to read native " |
| 1326 | "max address (err_mask=0x%x)\n", err_mask); |
| 1327 | if (err_mask == AC_ERR_DEV && (tf.feature & ATA_ABORTED)) |
| 1328 | return -EACCES; |
| 1329 | return -EIO; |
| 1330 | } |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1331 | |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1332 | if (lba48) |
Tejun Heo | a5987e0 | 2008-03-27 19:14:23 +0900 | [diff] [blame] | 1333 | *max_sectors = ata_tf_to_lba48(&tf) + 1; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1334 | else |
Tejun Heo | a5987e0 | 2008-03-27 19:14:23 +0900 | [diff] [blame] | 1335 | *max_sectors = ata_tf_to_lba(&tf) + 1; |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1336 | if (dev->horkage & ATA_HORKAGE_HPA_SIZE) |
Alan Cox | 93328e1 | 2007-09-29 04:06:48 -0400 | [diff] [blame] | 1337 | (*max_sectors)--; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1338 | return 0; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1339 | } |
| 1340 | |
| 1341 | /** |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1342 | * ata_set_max_sectors - Set max sectors |
| 1343 | * @dev: target device |
Randy Dunlap | 6b38d1d | 2007-05-01 17:35:55 -0700 | [diff] [blame] | 1344 | * @new_sectors: new max sectors value to set for the device |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1345 | * |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1346 | * Set max sectors of @dev to @new_sectors. |
| 1347 | * |
| 1348 | * RETURNS: |
| 1349 | * 0 on success, -EACCES if command is aborted or denied (due to |
| 1350 | * previous non-volatile SET_MAX) by the drive. -EIO on other |
| 1351 | * errors. |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1352 | */ |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1353 | 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] | 1354 | { |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1355 | unsigned int err_mask; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1356 | struct ata_taskfile tf; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1357 | int lba48 = ata_id_has_lba48(dev->id); |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1358 | |
| 1359 | new_sectors--; |
| 1360 | |
| 1361 | ata_tf_init(dev, &tf); |
| 1362 | |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1363 | tf.flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1364 | |
| 1365 | if (lba48) { |
| 1366 | tf.command = ATA_CMD_SET_MAX_EXT; |
| 1367 | tf.flags |= ATA_TFLAG_LBA48; |
| 1368 | |
| 1369 | tf.hob_lbal = (new_sectors >> 24) & 0xff; |
| 1370 | tf.hob_lbam = (new_sectors >> 32) & 0xff; |
| 1371 | tf.hob_lbah = (new_sectors >> 40) & 0xff; |
Tejun Heo | 1e582ba | 2007-09-21 20:07:14 +0900 | [diff] [blame] | 1372 | } else { |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1373 | tf.command = ATA_CMD_SET_MAX; |
| 1374 | |
Tejun Heo | 1e582ba | 2007-09-21 20:07:14 +0900 | [diff] [blame] | 1375 | tf.device |= (new_sectors >> 24) & 0xf; |
| 1376 | } |
| 1377 | |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1378 | tf.protocol |= ATA_PROT_NODATA; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1379 | tf.device |= ATA_LBA; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1380 | |
| 1381 | tf.lbal = (new_sectors >> 0) & 0xff; |
| 1382 | tf.lbam = (new_sectors >> 8) & 0xff; |
| 1383 | tf.lbah = (new_sectors >> 16) & 0xff; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1384 | |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1385 | 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] | 1386 | if (err_mask) { |
| 1387 | ata_dev_printk(dev, KERN_WARNING, "failed to set " |
| 1388 | "max address (err_mask=0x%x)\n", err_mask); |
| 1389 | if (err_mask == AC_ERR_DEV && |
| 1390 | (tf.feature & (ATA_ABORTED | ATA_IDNF))) |
| 1391 | return -EACCES; |
| 1392 | return -EIO; |
| 1393 | } |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1394 | |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1395 | return 0; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1396 | } |
| 1397 | |
| 1398 | /** |
| 1399 | * ata_hpa_resize - Resize a device with an HPA set |
| 1400 | * @dev: Device to resize |
| 1401 | * |
| 1402 | * Read the size of an LBA28 or LBA48 disk with HPA features and resize |
| 1403 | * it if required to the full size of the media. The caller must check |
| 1404 | * the drive has the HPA feature set enabled. |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1405 | * |
| 1406 | * RETURNS: |
| 1407 | * 0 on success, -errno on failure. |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1408 | */ |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1409 | static int ata_hpa_resize(struct ata_device *dev) |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1410 | { |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1411 | struct ata_eh_context *ehc = &dev->link->eh_context; |
| 1412 | int print_info = ehc->i.flags & ATA_EHI_PRINTINFO; |
| 1413 | u64 sectors = ata_id_n_sectors(dev->id); |
| 1414 | u64 native_sectors; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1415 | int rc; |
Jeff Garzik | a617c09 | 2007-05-21 20:14:23 -0400 | [diff] [blame] | 1416 | |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1417 | /* do we need to do it? */ |
| 1418 | if (dev->class != ATA_DEV_ATA || |
| 1419 | !ata_id_has_lba(dev->id) || !ata_id_hpa_enabled(dev->id) || |
| 1420 | (dev->horkage & ATA_HORKAGE_BROKEN_HPA)) |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1421 | return 0; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1422 | |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1423 | /* read native max address */ |
| 1424 | rc = ata_read_native_max_address(dev, &native_sectors); |
| 1425 | if (rc) { |
Tejun Heo | dda7aba | 2008-03-23 21:05:15 +0900 | [diff] [blame] | 1426 | /* If device aborted the command or HPA isn't going to |
| 1427 | * be unlocked, skip HPA resizing. |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1428 | */ |
Tejun Heo | dda7aba | 2008-03-23 21:05:15 +0900 | [diff] [blame] | 1429 | if (rc == -EACCES || !ata_ignore_hpa) { |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1430 | ata_dev_printk(dev, KERN_WARNING, "HPA support seems " |
Tejun Heo | dda7aba | 2008-03-23 21:05:15 +0900 | [diff] [blame] | 1431 | "broken, skipping HPA handling\n"); |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1432 | dev->horkage |= ATA_HORKAGE_BROKEN_HPA; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1433 | |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1434 | /* we can continue if device aborted the command */ |
| 1435 | if (rc == -EACCES) |
| 1436 | rc = 0; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1437 | } |
Tejun Heo | 37301a5 | 2007-06-25 20:45:54 +0900 | [diff] [blame] | 1438 | |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1439 | return rc; |
| 1440 | } |
| 1441 | |
| 1442 | /* nothing to do? */ |
| 1443 | if (native_sectors <= sectors || !ata_ignore_hpa) { |
| 1444 | if (!print_info || native_sectors == sectors) |
| 1445 | return 0; |
| 1446 | |
| 1447 | if (native_sectors > sectors) |
| 1448 | ata_dev_printk(dev, KERN_INFO, |
| 1449 | "HPA detected: current %llu, native %llu\n", |
| 1450 | (unsigned long long)sectors, |
| 1451 | (unsigned long long)native_sectors); |
| 1452 | else if (native_sectors < sectors) |
| 1453 | ata_dev_printk(dev, KERN_WARNING, |
| 1454 | "native sectors (%llu) is smaller than " |
| 1455 | "sectors (%llu)\n", |
| 1456 | (unsigned long long)native_sectors, |
| 1457 | (unsigned long long)sectors); |
| 1458 | return 0; |
| 1459 | } |
| 1460 | |
| 1461 | /* let's unlock HPA */ |
| 1462 | rc = ata_set_max_sectors(dev, native_sectors); |
| 1463 | if (rc == -EACCES) { |
| 1464 | /* if device aborted the command, skip HPA resizing */ |
| 1465 | ata_dev_printk(dev, KERN_WARNING, "device aborted resize " |
| 1466 | "(%llu -> %llu), skipping HPA handling\n", |
| 1467 | (unsigned long long)sectors, |
| 1468 | (unsigned long long)native_sectors); |
| 1469 | dev->horkage |= ATA_HORKAGE_BROKEN_HPA; |
| 1470 | return 0; |
| 1471 | } else if (rc) |
| 1472 | return rc; |
| 1473 | |
| 1474 | /* re-read IDENTIFY data */ |
| 1475 | rc = ata_dev_reread_id(dev, 0); |
| 1476 | if (rc) { |
| 1477 | ata_dev_printk(dev, KERN_ERR, "failed to re-read IDENTIFY " |
| 1478 | "data after HPA resizing\n"); |
| 1479 | return rc; |
| 1480 | } |
| 1481 | |
| 1482 | if (print_info) { |
| 1483 | u64 new_sectors = ata_id_n_sectors(dev->id); |
| 1484 | ata_dev_printk(dev, KERN_INFO, |
| 1485 | "HPA unlocked: %llu -> %llu, native %llu\n", |
| 1486 | (unsigned long long)sectors, |
| 1487 | (unsigned long long)new_sectors, |
| 1488 | (unsigned long long)native_sectors); |
| 1489 | } |
| 1490 | |
| 1491 | return 0; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1492 | } |
| 1493 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 1494 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1495 | * ata_dump_id - IDENTIFY DEVICE info debugging output |
Tejun Heo | 0bd3300 | 2006-02-12 22:47:05 +0900 | [diff] [blame] | 1496 | * @id: IDENTIFY DEVICE page to dump |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1497 | * |
Tejun Heo | 0bd3300 | 2006-02-12 22:47:05 +0900 | [diff] [blame] | 1498 | * Dump selected 16-bit words from the given IDENTIFY DEVICE |
| 1499 | * page. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1500 | * |
| 1501 | * LOCKING: |
| 1502 | * caller. |
| 1503 | */ |
| 1504 | |
Tejun Heo | 0bd3300 | 2006-02-12 22:47:05 +0900 | [diff] [blame] | 1505 | static inline void ata_dump_id(const u16 *id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1506 | { |
| 1507 | DPRINTK("49==0x%04x " |
| 1508 | "53==0x%04x " |
| 1509 | "63==0x%04x " |
| 1510 | "64==0x%04x " |
| 1511 | "75==0x%04x \n", |
Tejun Heo | 0bd3300 | 2006-02-12 22:47:05 +0900 | [diff] [blame] | 1512 | id[49], |
| 1513 | id[53], |
| 1514 | id[63], |
| 1515 | id[64], |
| 1516 | id[75]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1517 | DPRINTK("80==0x%04x " |
| 1518 | "81==0x%04x " |
| 1519 | "82==0x%04x " |
| 1520 | "83==0x%04x " |
| 1521 | "84==0x%04x \n", |
Tejun Heo | 0bd3300 | 2006-02-12 22:47:05 +0900 | [diff] [blame] | 1522 | id[80], |
| 1523 | id[81], |
| 1524 | id[82], |
| 1525 | id[83], |
| 1526 | id[84]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1527 | DPRINTK("88==0x%04x " |
| 1528 | "93==0x%04x\n", |
Tejun Heo | 0bd3300 | 2006-02-12 22:47:05 +0900 | [diff] [blame] | 1529 | id[88], |
| 1530 | id[93]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1531 | } |
| 1532 | |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 1533 | /** |
| 1534 | * ata_id_xfermask - Compute xfermask from the given IDENTIFY data |
| 1535 | * @id: IDENTIFY data to compute xfer mask from |
| 1536 | * |
| 1537 | * Compute the xfermask for this device. This is not as trivial |
| 1538 | * as it seems if we must consider early devices correctly. |
| 1539 | * |
| 1540 | * FIXME: pre IDE drive timing (do we care ?). |
| 1541 | * |
| 1542 | * LOCKING: |
| 1543 | * None. |
| 1544 | * |
| 1545 | * RETURNS: |
| 1546 | * Computed xfermask |
| 1547 | */ |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 1548 | unsigned long ata_id_xfermask(const u16 *id) |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 1549 | { |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 1550 | unsigned long pio_mask, mwdma_mask, udma_mask; |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 1551 | |
| 1552 | /* Usual case. Word 53 indicates word 64 is valid */ |
| 1553 | if (id[ATA_ID_FIELD_VALID] & (1 << 1)) { |
| 1554 | pio_mask = id[ATA_ID_PIO_MODES] & 0x03; |
| 1555 | pio_mask <<= 3; |
| 1556 | pio_mask |= 0x7; |
| 1557 | } else { |
| 1558 | /* If word 64 isn't valid then Word 51 high byte holds |
| 1559 | * the PIO timing number for the maximum. Turn it into |
| 1560 | * a mask. |
| 1561 | */ |
Lennert Buytenhek | 7a0f1c8 | 2007-01-29 13:28:47 +0100 | [diff] [blame] | 1562 | u8 mode = (id[ATA_ID_OLD_PIO_MODES] >> 8) & 0xFF; |
Alan Cox | 46767aeb | 2006-09-29 18:26:47 +0100 | [diff] [blame] | 1563 | if (mode < 5) /* Valid PIO range */ |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1564 | pio_mask = (2 << mode) - 1; |
Alan Cox | 46767aeb | 2006-09-29 18:26:47 +0100 | [diff] [blame] | 1565 | else |
| 1566 | pio_mask = 1; |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 1567 | |
| 1568 | /* But wait.. there's more. Design your standards by |
| 1569 | * committee and you too can get a free iordy field to |
| 1570 | * process. However its the speeds not the modes that |
| 1571 | * are supported... Note drivers using the timing API |
| 1572 | * will get this right anyway |
| 1573 | */ |
| 1574 | } |
| 1575 | |
| 1576 | mwdma_mask = id[ATA_ID_MWDMA_MODES] & 0x07; |
Tejun Heo | fb21f0d | 2006-03-12 12:34:35 +0900 | [diff] [blame] | 1577 | |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 1578 | if (ata_id_is_cfa(id)) { |
| 1579 | /* |
| 1580 | * Process compact flash extended modes |
| 1581 | */ |
| 1582 | int pio = id[163] & 0x7; |
| 1583 | int dma = (id[163] >> 3) & 7; |
| 1584 | |
| 1585 | if (pio) |
| 1586 | pio_mask |= (1 << 5); |
| 1587 | if (pio > 1) |
| 1588 | pio_mask |= (1 << 6); |
| 1589 | if (dma) |
| 1590 | mwdma_mask |= (1 << 3); |
| 1591 | if (dma > 1) |
| 1592 | mwdma_mask |= (1 << 4); |
| 1593 | } |
| 1594 | |
Tejun Heo | fb21f0d | 2006-03-12 12:34:35 +0900 | [diff] [blame] | 1595 | udma_mask = 0; |
| 1596 | if (id[ATA_ID_FIELD_VALID] & (1 << 2)) |
| 1597 | udma_mask = id[ATA_ID_UDMA_MODES] & 0xff; |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 1598 | |
| 1599 | return ata_pack_xfermask(pio_mask, mwdma_mask, udma_mask); |
| 1600 | } |
| 1601 | |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 1602 | /** |
Jeff Garzik | 442eacc | 2007-12-19 04:25:10 -0500 | [diff] [blame] | 1603 | * ata_pio_queue_task - Queue port_task |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 1604 | * @ap: The ata_port to queue port_task for |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 1605 | * @data: data for @fn to use |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 1606 | * @delay: delay time in msecs for workqueue function |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 1607 | * |
| 1608 | * Schedule @fn(@data) for execution after @delay jiffies using |
| 1609 | * port_task. There is one port_task per port and it's the |
| 1610 | * user(low level driver)'s responsibility to make sure that only |
| 1611 | * one task is active at any given time. |
| 1612 | * |
| 1613 | * libata core layer takes care of synchronization between |
Jeff Garzik | 442eacc | 2007-12-19 04:25:10 -0500 | [diff] [blame] | 1614 | * 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] | 1615 | * synchronization. |
| 1616 | * |
| 1617 | * LOCKING: |
| 1618 | * Inherited from caller. |
| 1619 | */ |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 1620 | 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] | 1621 | { |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 1622 | ap->port_task_data = data; |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 1623 | |
Oleg Nesterov | 45a66c1 | 2007-07-09 11:46:13 -0700 | [diff] [blame] | 1624 | /* may fail if ata_port_flush_task() in progress */ |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 1625 | queue_delayed_work(ata_wq, &ap->port_task, msecs_to_jiffies(delay)); |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 1626 | } |
| 1627 | |
| 1628 | /** |
| 1629 | * ata_port_flush_task - Flush port_task |
| 1630 | * @ap: The ata_port to flush port_task for |
| 1631 | * |
| 1632 | * After this function completes, port_task is guranteed not to |
| 1633 | * be running or scheduled. |
| 1634 | * |
| 1635 | * LOCKING: |
| 1636 | * Kernel thread context (may sleep) |
| 1637 | */ |
| 1638 | void ata_port_flush_task(struct ata_port *ap) |
| 1639 | { |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 1640 | DPRINTK("ENTER\n"); |
| 1641 | |
Oleg Nesterov | 45a66c1 | 2007-07-09 11:46:13 -0700 | [diff] [blame] | 1642 | cancel_rearming_delayed_work(&ap->port_task); |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 1643 | |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 1644 | if (ata_msg_ctl(ap)) |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 1645 | ata_port_printk(ap, KERN_DEBUG, "%s: EXIT\n", __func__); |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 1646 | } |
| 1647 | |
Adrian Bunk | 7102d23 | 2007-01-04 00:09:36 +0100 | [diff] [blame] | 1648 | static void ata_qc_complete_internal(struct ata_queued_cmd *qc) |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1649 | { |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1650 | struct completion *waiting = qc->private_data; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1651 | |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1652 | complete(waiting); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1653 | } |
| 1654 | |
| 1655 | /** |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1656 | * ata_exec_internal_sg - execute libata internal command |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1657 | * @dev: Device to which the command is sent |
| 1658 | * @tf: Taskfile registers for the command and the result |
Tejun Heo | d69cf37 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 1659 | * @cdb: CDB for packet command |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1660 | * @dma_dir: Data tranfer direction of the command |
Randy Dunlap | 5c1ad8b | 2007-10-18 14:12:26 -0700 | [diff] [blame] | 1661 | * @sgl: sg list for the data buffer of the command |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1662 | * @n_elem: Number of sg entries |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1663 | * @timeout: Timeout in msecs (0 for default) |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1664 | * |
| 1665 | * Executes libata internal command with timeout. @tf contains |
| 1666 | * command on entry and result on return. Timeout and error |
| 1667 | * conditions are reported via return value. No recovery action |
| 1668 | * is taken after a command times out. It's caller's duty to |
| 1669 | * clean up after timeout. |
| 1670 | * |
| 1671 | * LOCKING: |
| 1672 | * None. Should be called with kernel context, might sleep. |
Tejun Heo | 551e888 | 2006-06-12 14:09:49 +0900 | [diff] [blame] | 1673 | * |
| 1674 | * RETURNS: |
| 1675 | * Zero on success, AC_ERR_* mask on failure |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1676 | */ |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1677 | unsigned ata_exec_internal_sg(struct ata_device *dev, |
| 1678 | struct ata_taskfile *tf, const u8 *cdb, |
Jens Axboe | 8726021 | 2007-10-16 11:14:12 +0200 | [diff] [blame] | 1679 | int dma_dir, struct scatterlist *sgl, |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1680 | unsigned int n_elem, unsigned long timeout) |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1681 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 1682 | struct ata_link *link = dev->link; |
| 1683 | struct ata_port *ap = link->ap; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1684 | u8 command = tf->command; |
Tejun Heo | 87fbc5a | 2008-05-20 02:17:54 +0900 | [diff] [blame] | 1685 | int auto_timeout = 0; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1686 | struct ata_queued_cmd *qc; |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 1687 | unsigned int tag, preempted_tag; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 1688 | u32 preempted_sactive, preempted_qc_active; |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1689 | int preempted_nr_active_links; |
Ingo Molnar | 60be6b9 | 2006-07-03 00:25:26 -0700 | [diff] [blame] | 1690 | DECLARE_COMPLETION_ONSTACK(wait); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1691 | unsigned long flags; |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1692 | unsigned int err_mask; |
Tejun Heo | d95a717 | 2006-05-15 20:58:14 +0900 | [diff] [blame] | 1693 | int rc; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1694 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1695 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1696 | |
Tejun Heo | e318049 | 2006-05-15 20:58:09 +0900 | [diff] [blame] | 1697 | /* no internal command while frozen */ |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 1698 | if (ap->pflags & ATA_PFLAG_FROZEN) { |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1699 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | e318049 | 2006-05-15 20:58:09 +0900 | [diff] [blame] | 1700 | return AC_ERR_SYSTEM; |
| 1701 | } |
| 1702 | |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 1703 | /* initialize internal qc */ |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1704 | |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 1705 | /* XXX: Tag 0 is used for drivers with legacy EH as some |
| 1706 | * drivers choke if any other tag is given. This breaks |
| 1707 | * ata_tag_internal() test for those drivers. Don't use new |
| 1708 | * EH stuff without converting to it. |
| 1709 | */ |
| 1710 | if (ap->ops->error_handler) |
| 1711 | tag = ATA_TAG_INTERNAL; |
| 1712 | else |
| 1713 | tag = 0; |
| 1714 | |
Tejun Heo | 8a8bc22 | 2008-11-10 14:48:21 +0900 | [diff] [blame] | 1715 | if (test_and_set_bit(tag, &ap->qc_allocated)) |
| 1716 | BUG(); |
Tejun Heo | f69499f | 2006-05-15 20:58:03 +0900 | [diff] [blame] | 1717 | qc = __ata_qc_from_tag(ap, tag); |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 1718 | |
| 1719 | qc->tag = tag; |
| 1720 | qc->scsicmd = NULL; |
| 1721 | qc->ap = ap; |
| 1722 | qc->dev = dev; |
| 1723 | ata_qc_reinit(qc); |
| 1724 | |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 1725 | preempted_tag = link->active_tag; |
| 1726 | preempted_sactive = link->sactive; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 1727 | preempted_qc_active = ap->qc_active; |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1728 | preempted_nr_active_links = ap->nr_active_links; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 1729 | link->active_tag = ATA_TAG_POISON; |
| 1730 | link->sactive = 0; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 1731 | ap->qc_active = 0; |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1732 | ap->nr_active_links = 0; |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 1733 | |
| 1734 | /* prepare & issue qc */ |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1735 | qc->tf = *tf; |
Tejun Heo | d69cf37 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 1736 | if (cdb) |
| 1737 | memcpy(qc->cdb, cdb, ATAPI_CDB_LEN); |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 1738 | qc->flags |= ATA_QCFLAG_RESULT_TF; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1739 | qc->dma_dir = dma_dir; |
| 1740 | if (dma_dir != DMA_NONE) { |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1741 | unsigned int i, buflen = 0; |
Jens Axboe | 8726021 | 2007-10-16 11:14:12 +0200 | [diff] [blame] | 1742 | struct scatterlist *sg; |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1743 | |
Jens Axboe | 8726021 | 2007-10-16 11:14:12 +0200 | [diff] [blame] | 1744 | for_each_sg(sgl, sg, n_elem, i) |
| 1745 | buflen += sg->length; |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1746 | |
Jens Axboe | 8726021 | 2007-10-16 11:14:12 +0200 | [diff] [blame] | 1747 | ata_sg_init(qc, sgl, n_elem); |
Brian King | 49c8042 | 2007-01-30 11:32:26 -0600 | [diff] [blame] | 1748 | qc->nbytes = buflen; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1749 | } |
| 1750 | |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1751 | qc->private_data = &wait; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1752 | qc->complete_fn = ata_qc_complete_internal; |
| 1753 | |
Tejun Heo | 8e0e694 | 2006-03-31 20:41:11 +0900 | [diff] [blame] | 1754 | ata_qc_issue(qc); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1755 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1756 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1757 | |
Tejun Heo | 87fbc5a | 2008-05-20 02:17:54 +0900 | [diff] [blame] | 1758 | if (!timeout) { |
| 1759 | if (ata_probe_timeout) |
| 1760 | timeout = ata_probe_timeout * 1000; |
| 1761 | else { |
| 1762 | timeout = ata_internal_cmd_timeout(dev, command); |
| 1763 | auto_timeout = 1; |
| 1764 | } |
| 1765 | } |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1766 | |
| 1767 | rc = wait_for_completion_timeout(&wait, msecs_to_jiffies(timeout)); |
Albert Lee | 41ade50 | 2006-03-14 11:19:04 +0800 | [diff] [blame] | 1768 | |
Tejun Heo | d95a717 | 2006-05-15 20:58:14 +0900 | [diff] [blame] | 1769 | ata_port_flush_task(ap); |
| 1770 | |
| 1771 | if (!rc) { |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1772 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1773 | |
| 1774 | /* We're racing with irq here. If we lose, the |
| 1775 | * following test prevents us from completing the qc |
Tejun Heo | d95a717 | 2006-05-15 20:58:14 +0900 | [diff] [blame] | 1776 | * twice. If we win, the port is frozen and will be |
| 1777 | * cleaned up by ->post_internal_cmd(). |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1778 | */ |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1779 | if (qc->flags & ATA_QCFLAG_ACTIVE) { |
Tejun Heo | d95a717 | 2006-05-15 20:58:14 +0900 | [diff] [blame] | 1780 | qc->err_mask |= AC_ERR_TIMEOUT; |
| 1781 | |
| 1782 | if (ap->ops->error_handler) |
| 1783 | ata_port_freeze(ap); |
| 1784 | else |
| 1785 | ata_qc_complete(qc); |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 1786 | |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 1787 | if (ata_msg_warn(ap)) |
| 1788 | ata_dev_printk(dev, KERN_WARNING, |
Tejun Heo | 8857455 | 2006-06-25 20:00:35 +0900 | [diff] [blame] | 1789 | "qc timeout (cmd 0x%x)\n", command); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1790 | } |
| 1791 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1792 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1793 | } |
| 1794 | |
Tejun Heo | d95a717 | 2006-05-15 20:58:14 +0900 | [diff] [blame] | 1795 | /* do post_internal_cmd */ |
| 1796 | if (ap->ops->post_internal_cmd) |
| 1797 | ap->ops->post_internal_cmd(qc); |
| 1798 | |
Tejun Heo | a51d644 | 2007-03-20 15:24:11 +0900 | [diff] [blame] | 1799 | /* perform minimal error analysis */ |
| 1800 | if (qc->flags & ATA_QCFLAG_FAILED) { |
| 1801 | if (qc->result_tf.command & (ATA_ERR | ATA_DF)) |
| 1802 | qc->err_mask |= AC_ERR_DEV; |
| 1803 | |
| 1804 | if (!qc->err_mask) |
| 1805 | qc->err_mask |= AC_ERR_OTHER; |
| 1806 | |
| 1807 | if (qc->err_mask & ~AC_ERR_OTHER) |
| 1808 | qc->err_mask &= ~AC_ERR_OTHER; |
Tejun Heo | d95a717 | 2006-05-15 20:58:14 +0900 | [diff] [blame] | 1809 | } |
| 1810 | |
Tejun Heo | 1586930 | 2006-05-15 20:57:33 +0900 | [diff] [blame] | 1811 | /* finish up */ |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1812 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | 1586930 | 2006-05-15 20:57:33 +0900 | [diff] [blame] | 1813 | |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 1814 | *tf = qc->result_tf; |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1815 | err_mask = qc->err_mask; |
| 1816 | |
| 1817 | ata_qc_free(qc); |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 1818 | link->active_tag = preempted_tag; |
| 1819 | link->sactive = preempted_sactive; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 1820 | ap->qc_active = preempted_qc_active; |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1821 | ap->nr_active_links = preempted_nr_active_links; |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1822 | |
Tejun Heo | 1f7dd3e9 | 2006-03-24 15:25:30 +0900 | [diff] [blame] | 1823 | /* XXX - Some LLDDs (sata_mv) disable port on command failure. |
| 1824 | * Until those drivers are fixed, we detect the condition |
| 1825 | * here, fail the command with AC_ERR_SYSTEM and reenable the |
| 1826 | * port. |
| 1827 | * |
| 1828 | * Note that this doesn't change any behavior as internal |
| 1829 | * command failure results in disabling the device in the |
| 1830 | * higher layer for LLDDs without new reset/EH callbacks. |
| 1831 | * |
| 1832 | * Kill the following code as soon as those drivers are fixed. |
| 1833 | */ |
Tejun Heo | 198e0fe | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 1834 | if (ap->flags & ATA_FLAG_DISABLED) { |
Tejun Heo | 1f7dd3e9 | 2006-03-24 15:25:30 +0900 | [diff] [blame] | 1835 | err_mask |= AC_ERR_SYSTEM; |
| 1836 | ata_port_probe(ap); |
| 1837 | } |
| 1838 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1839 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | 1586930 | 2006-05-15 20:57:33 +0900 | [diff] [blame] | 1840 | |
Tejun Heo | 87fbc5a | 2008-05-20 02:17:54 +0900 | [diff] [blame] | 1841 | if ((err_mask & AC_ERR_TIMEOUT) && auto_timeout) |
| 1842 | ata_internal_cmd_timed_out(dev, command); |
| 1843 | |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1844 | return err_mask; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1845 | } |
| 1846 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1847 | /** |
Tejun Heo | 33480a0 | 2006-12-12 02:15:31 +0900 | [diff] [blame] | 1848 | * ata_exec_internal - execute libata internal command |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1849 | * @dev: Device to which the command is sent |
| 1850 | * @tf: Taskfile registers for the command and the result |
| 1851 | * @cdb: CDB for packet command |
| 1852 | * @dma_dir: Data tranfer direction of the command |
| 1853 | * @buf: Data buffer of the command |
| 1854 | * @buflen: Length of data buffer |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1855 | * @timeout: Timeout in msecs (0 for default) |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1856 | * |
| 1857 | * Wrapper around ata_exec_internal_sg() which takes simple |
| 1858 | * buffer instead of sg list. |
| 1859 | * |
| 1860 | * LOCKING: |
| 1861 | * None. Should be called with kernel context, might sleep. |
| 1862 | * |
| 1863 | * RETURNS: |
| 1864 | * Zero on success, AC_ERR_* mask on failure |
| 1865 | */ |
| 1866 | unsigned ata_exec_internal(struct ata_device *dev, |
| 1867 | struct ata_taskfile *tf, const u8 *cdb, |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1868 | int dma_dir, void *buf, unsigned int buflen, |
| 1869 | unsigned long timeout) |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1870 | { |
Tejun Heo | 33480a0 | 2006-12-12 02:15:31 +0900 | [diff] [blame] | 1871 | struct scatterlist *psg = NULL, sg; |
| 1872 | unsigned int n_elem = 0; |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1873 | |
Tejun Heo | 33480a0 | 2006-12-12 02:15:31 +0900 | [diff] [blame] | 1874 | if (dma_dir != DMA_NONE) { |
| 1875 | WARN_ON(!buf); |
| 1876 | sg_init_one(&sg, buf, buflen); |
| 1877 | psg = &sg; |
| 1878 | n_elem++; |
| 1879 | } |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1880 | |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1881 | return ata_exec_internal_sg(dev, tf, cdb, dma_dir, psg, n_elem, |
| 1882 | timeout); |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1883 | } |
| 1884 | |
| 1885 | /** |
Tejun Heo | 977e6b9 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1886 | * ata_do_simple_cmd - execute simple internal command |
| 1887 | * @dev: Device to which the command is sent |
| 1888 | * @cmd: Opcode to execute |
| 1889 | * |
| 1890 | * Execute a 'simple' command, that only consists of the opcode |
| 1891 | * 'cmd' itself, without filling any other registers |
| 1892 | * |
| 1893 | * LOCKING: |
| 1894 | * Kernel thread context (may sleep). |
| 1895 | * |
| 1896 | * RETURNS: |
| 1897 | * Zero on success, AC_ERR_* mask on failure |
Tejun Heo | e58eb58 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1898 | */ |
Tejun Heo | 77b08fb | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1899 | unsigned int ata_do_simple_cmd(struct ata_device *dev, u8 cmd) |
Tejun Heo | e58eb58 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1900 | { |
| 1901 | struct ata_taskfile tf; |
Tejun Heo | e58eb58 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1902 | |
| 1903 | ata_tf_init(dev, &tf); |
| 1904 | |
| 1905 | tf.command = cmd; |
| 1906 | tf.flags |= ATA_TFLAG_DEVICE; |
| 1907 | tf.protocol = ATA_PROT_NODATA; |
| 1908 | |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1909 | return ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0); |
Tejun Heo | e58eb58 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1910 | } |
| 1911 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1912 | /** |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1913 | * ata_pio_need_iordy - check if iordy needed |
| 1914 | * @adev: ATA device |
| 1915 | * |
| 1916 | * Check if the current speed of the device requires IORDY. Used |
| 1917 | * by various controllers for chip configuration. |
| 1918 | */ |
Jeff Garzik | a617c09 | 2007-05-21 20:14:23 -0400 | [diff] [blame] | 1919 | |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1920 | unsigned int ata_pio_need_iordy(const struct ata_device *adev) |
| 1921 | { |
Alan Cox | 432729f | 2007-03-08 23:22:59 +0000 | [diff] [blame] | 1922 | /* Controller doesn't support IORDY. Probably a pointless check |
| 1923 | as the caller should know this */ |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 1924 | if (adev->link->ap->flags & ATA_FLAG_NO_IORDY) |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1925 | return 0; |
Alan Cox | 432729f | 2007-03-08 23:22:59 +0000 | [diff] [blame] | 1926 | /* PIO3 and higher it is mandatory */ |
| 1927 | if (adev->pio_mode > XFER_PIO_2) |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1928 | return 1; |
Alan Cox | 432729f | 2007-03-08 23:22:59 +0000 | [diff] [blame] | 1929 | /* We turn it on when possible */ |
| 1930 | if (ata_id_has_iordy(adev->id)) |
| 1931 | return 1; |
| 1932 | return 0; |
| 1933 | } |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 1934 | |
Alan Cox | 432729f | 2007-03-08 23:22:59 +0000 | [diff] [blame] | 1935 | /** |
| 1936 | * ata_pio_mask_no_iordy - Return the non IORDY mask |
| 1937 | * @adev: ATA device |
| 1938 | * |
| 1939 | * Compute the highest mode possible if we are not using iordy. Return |
| 1940 | * -1 if no iordy mode is available. |
| 1941 | */ |
Jeff Garzik | a617c09 | 2007-05-21 20:14:23 -0400 | [diff] [blame] | 1942 | |
Alan Cox | 432729f | 2007-03-08 23:22:59 +0000 | [diff] [blame] | 1943 | static u32 ata_pio_mask_no_iordy(const struct ata_device *adev) |
| 1944 | { |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1945 | /* 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] | 1946 | if (adev->id[ATA_ID_FIELD_VALID] & 2) { /* EIDE */ |
Alan Cox | 432729f | 2007-03-08 23:22:59 +0000 | [diff] [blame] | 1947 | u16 pio = adev->id[ATA_ID_EIDE_PIO]; |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1948 | /* Is the speed faster than the drive allows non IORDY ? */ |
| 1949 | if (pio) { |
| 1950 | /* This is cycle times not frequency - watch the logic! */ |
| 1951 | if (pio > 240) /* PIO2 is 240nS per cycle */ |
Alan Cox | 432729f | 2007-03-08 23:22:59 +0000 | [diff] [blame] | 1952 | return 3 << ATA_SHIFT_PIO; |
| 1953 | return 7 << ATA_SHIFT_PIO; |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1954 | } |
| 1955 | } |
Alan Cox | 432729f | 2007-03-08 23:22:59 +0000 | [diff] [blame] | 1956 | return 3 << ATA_SHIFT_PIO; |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1957 | } |
| 1958 | |
| 1959 | /** |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 1960 | * ata_do_dev_read_id - default ID read method |
| 1961 | * @dev: device |
| 1962 | * @tf: proposed taskfile |
| 1963 | * @id: data buffer |
| 1964 | * |
| 1965 | * Issue the identify taskfile and hand back the buffer containing |
| 1966 | * identify data. For some RAID controllers and for pre ATA devices |
| 1967 | * this function is wrapped or replaced by the driver |
| 1968 | */ |
| 1969 | unsigned int ata_do_dev_read_id(struct ata_device *dev, |
| 1970 | struct ata_taskfile *tf, u16 *id) |
| 1971 | { |
| 1972 | return ata_exec_internal(dev, tf, NULL, DMA_FROM_DEVICE, |
| 1973 | id, sizeof(id[0]) * ATA_ID_WORDS, 0); |
| 1974 | } |
| 1975 | |
| 1976 | /** |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1977 | * ata_dev_read_id - Read ID data from the specified device |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1978 | * @dev: target device |
| 1979 | * @p_class: pointer to class of the target device (may be changed) |
Tejun Heo | bff0464 | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 1980 | * @flags: ATA_READID_* flags |
Tejun Heo | fe635c7 | 2006-05-15 20:57:35 +0900 | [diff] [blame] | 1981 | * @id: buffer to read IDENTIFY data into |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1982 | * |
| 1983 | * Read ID data from the specified device. ATA_CMD_ID_ATA is |
| 1984 | * performed on ATA devices and ATA_CMD_ID_ATAPI on ATAPI |
Tejun Heo | aec5c3c | 2006-03-25 01:33:34 +0900 | [diff] [blame] | 1985 | * devices. This function also issues ATA_CMD_INIT_DEV_PARAMS |
| 1986 | * for pre-ATA4 drives. |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1987 | * |
Alan Cox | 50a9901 | 2007-08-08 14:27:00 +0100 | [diff] [blame] | 1988 | * FIXME: ATA_CMD_ID_ATA is optional for early drives and right |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1989 | * now we abort if we hit that case. |
Alan Cox | 50a9901 | 2007-08-08 14:27:00 +0100 | [diff] [blame] | 1990 | * |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1991 | * LOCKING: |
| 1992 | * Kernel thread context (may sleep) |
| 1993 | * |
| 1994 | * RETURNS: |
| 1995 | * 0 on success, -errno otherwise. |
| 1996 | */ |
Tejun Heo | a9beec9 | 2006-05-31 18:27:44 +0900 | [diff] [blame] | 1997 | 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] | 1998 | unsigned int flags, u16 *id) |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 1999 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2000 | struct ata_port *ap = dev->link->ap; |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2001 | unsigned int class = *p_class; |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2002 | struct ata_taskfile tf; |
| 2003 | unsigned int err_mask = 0; |
| 2004 | const char *reason; |
Tejun Heo | 54936f8 | 2007-05-11 14:35:29 +0200 | [diff] [blame] | 2005 | int may_fallback = 1, tried_spinup = 0; |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2006 | int rc; |
| 2007 | |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 2008 | if (ata_msg_ctl(ap)) |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 2009 | ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER\n", __func__); |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2010 | |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 2011 | retry: |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 2012 | ata_tf_init(dev, &tf); |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2013 | |
| 2014 | switch (class) { |
| 2015 | case ATA_DEV_ATA: |
| 2016 | tf.command = ATA_CMD_ID_ATA; |
| 2017 | break; |
| 2018 | case ATA_DEV_ATAPI: |
| 2019 | tf.command = ATA_CMD_ID_ATAPI; |
| 2020 | break; |
| 2021 | default: |
| 2022 | rc = -ENODEV; |
| 2023 | reason = "unsupported class"; |
| 2024 | goto err_out; |
| 2025 | } |
| 2026 | |
| 2027 | tf.protocol = ATA_PROT_PIO; |
Tejun Heo | 81afe89 | 2007-02-07 12:37:41 -0800 | [diff] [blame] | 2028 | |
| 2029 | /* Some devices choke if TF registers contain garbage. Make |
| 2030 | * sure those are properly initialized. |
| 2031 | */ |
| 2032 | tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 2033 | |
| 2034 | /* Device presence detection is unreliable on some |
| 2035 | * controllers. Always poll IDENTIFY if available. |
| 2036 | */ |
| 2037 | tf.flags |= ATA_TFLAG_POLLING; |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2038 | |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 2039 | if (ap->ops->read_id) |
| 2040 | err_mask = ap->ops->read_id(dev, &tf, id); |
| 2041 | else |
| 2042 | err_mask = ata_do_dev_read_id(dev, &tf, id); |
| 2043 | |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2044 | if (err_mask) { |
Tejun Heo | 800b399 | 2006-12-03 21:34:13 +0900 | [diff] [blame] | 2045 | if (err_mask & AC_ERR_NODEV_HINT) { |
Tejun Heo | 1ffc151 | 2008-03-23 15:16:53 +0900 | [diff] [blame] | 2046 | ata_dev_printk(dev, KERN_DEBUG, |
| 2047 | "NODEV after polling detection\n"); |
Tejun Heo | 55a8e2c | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 2048 | return -ENOENT; |
| 2049 | } |
| 2050 | |
Tejun Heo | 1ffc151 | 2008-03-23 15:16:53 +0900 | [diff] [blame] | 2051 | if ((err_mask == AC_ERR_DEV) && (tf.feature & ATA_ABORTED)) { |
| 2052 | /* Device or controller might have reported |
| 2053 | * the wrong device class. Give a shot at the |
| 2054 | * other IDENTIFY if the current one is |
| 2055 | * aborted by the device. |
| 2056 | */ |
| 2057 | if (may_fallback) { |
| 2058 | may_fallback = 0; |
Tejun Heo | 54936f8 | 2007-05-11 14:35:29 +0200 | [diff] [blame] | 2059 | |
Tejun Heo | 1ffc151 | 2008-03-23 15:16:53 +0900 | [diff] [blame] | 2060 | if (class == ATA_DEV_ATA) |
| 2061 | class = ATA_DEV_ATAPI; |
| 2062 | else |
| 2063 | class = ATA_DEV_ATA; |
| 2064 | goto retry; |
| 2065 | } |
| 2066 | |
| 2067 | /* Control reaches here iff the device aborted |
| 2068 | * both flavors of IDENTIFYs which happens |
| 2069 | * sometimes with phantom devices. |
| 2070 | */ |
| 2071 | ata_dev_printk(dev, KERN_DEBUG, |
| 2072 | "both IDENTIFYs aborted, assuming NODEV\n"); |
| 2073 | return -ENOENT; |
Tejun Heo | 54936f8 | 2007-05-11 14:35:29 +0200 | [diff] [blame] | 2074 | } |
| 2075 | |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2076 | rc = -EIO; |
| 2077 | reason = "I/O error"; |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2078 | goto err_out; |
| 2079 | } |
| 2080 | |
Tejun Heo | 54936f8 | 2007-05-11 14:35:29 +0200 | [diff] [blame] | 2081 | /* Falling back doesn't make sense if ID data was read |
| 2082 | * successfully at least once. |
| 2083 | */ |
| 2084 | may_fallback = 0; |
| 2085 | |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2086 | swap_buf_le16(id, ATA_ID_WORDS); |
| 2087 | |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2088 | /* sanity check */ |
Tejun Heo | a4f5749 | 2006-09-12 20:35:49 -0700 | [diff] [blame] | 2089 | rc = -EINVAL; |
Alan Cox | 6070068 | 2007-06-07 16:13:55 +0100 | [diff] [blame] | 2090 | reason = "device reports invalid type"; |
Tejun Heo | a4f5749 | 2006-09-12 20:35:49 -0700 | [diff] [blame] | 2091 | |
| 2092 | if (class == ATA_DEV_ATA) { |
| 2093 | if (!ata_id_is_ata(id) && !ata_id_is_cfa(id)) |
| 2094 | goto err_out; |
| 2095 | } else { |
| 2096 | if (ata_id_is_ata(id)) |
| 2097 | goto err_out; |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2098 | } |
| 2099 | |
Mark Lord | 169439c | 2007-04-17 18:26:07 -0400 | [diff] [blame] | 2100 | if (!tried_spinup && (id[2] == 0x37c8 || id[2] == 0x738c)) { |
| 2101 | tried_spinup = 1; |
| 2102 | /* |
| 2103 | * Drive powered-up in standby mode, and requires a specific |
| 2104 | * SET_FEATURES spin-up subcommand before it will accept |
| 2105 | * anything other than the original IDENTIFY command. |
| 2106 | */ |
Jeff Garzik | 218f3d3 | 2007-10-25 00:33:27 -0400 | [diff] [blame] | 2107 | err_mask = ata_dev_set_feature(dev, SETFEATURES_SPINUP, 0); |
Ryan Power | fb0582f9 | 2007-08-10 13:59:35 -0700 | [diff] [blame] | 2108 | if (err_mask && id[2] != 0x738c) { |
Mark Lord | 169439c | 2007-04-17 18:26:07 -0400 | [diff] [blame] | 2109 | rc = -EIO; |
| 2110 | reason = "SPINUP failed"; |
| 2111 | goto err_out; |
| 2112 | } |
| 2113 | /* |
| 2114 | * If the drive initially returned incomplete IDENTIFY info, |
| 2115 | * we now must reissue the IDENTIFY command. |
| 2116 | */ |
| 2117 | if (id[2] == 0x37c8) |
| 2118 | goto retry; |
| 2119 | } |
| 2120 | |
Tejun Heo | bff0464 | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 2121 | if ((flags & ATA_READID_POSTRESET) && class == ATA_DEV_ATA) { |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2122 | /* |
| 2123 | * The exact sequence expected by certain pre-ATA4 drives is: |
| 2124 | * SRST RESET |
Alan Cox | 50a9901 | 2007-08-08 14:27:00 +0100 | [diff] [blame] | 2125 | * IDENTIFY (optional in early ATA) |
| 2126 | * INITIALIZE DEVICE PARAMETERS (later IDE and ATA) |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2127 | * anything else.. |
| 2128 | * Some drives were very specific about that exact sequence. |
Alan Cox | 50a9901 | 2007-08-08 14:27:00 +0100 | [diff] [blame] | 2129 | * |
| 2130 | * Note that ATA4 says lba is mandatory so the second check |
| 2131 | * shoud never trigger. |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2132 | */ |
| 2133 | if (ata_id_major_version(id) < 4 || !ata_id_has_lba(id)) { |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 2134 | err_mask = ata_dev_init_params(dev, id[3], id[6]); |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2135 | if (err_mask) { |
| 2136 | rc = -EIO; |
| 2137 | reason = "INIT_DEV_PARAMS failed"; |
| 2138 | goto err_out; |
| 2139 | } |
| 2140 | |
| 2141 | /* current CHS translation info (id[53-58]) might be |
| 2142 | * changed. reread the identify device info. |
| 2143 | */ |
Tejun Heo | bff0464 | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 2144 | flags &= ~ATA_READID_POSTRESET; |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2145 | goto retry; |
| 2146 | } |
| 2147 | } |
| 2148 | |
| 2149 | *p_class = class; |
Tejun Heo | fe635c7 | 2006-05-15 20:57:35 +0900 | [diff] [blame] | 2150 | |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2151 | return 0; |
| 2152 | |
| 2153 | err_out: |
Tejun Heo | 8857455 | 2006-06-25 20:00:35 +0900 | [diff] [blame] | 2154 | if (ata_msg_warn(ap)) |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 2155 | ata_dev_printk(dev, KERN_WARNING, "failed to IDENTIFY " |
Tejun Heo | 8857455 | 2006-06-25 20:00:35 +0900 | [diff] [blame] | 2156 | "(%s, err_mask=0x%x)\n", reason, err_mask); |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2157 | return rc; |
| 2158 | } |
| 2159 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 2160 | static inline u8 ata_dev_knobble(struct ata_device *dev) |
Tejun Heo | 4b2f3ed | 2006-03-01 16:09:36 +0900 | [diff] [blame] | 2161 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2162 | struct ata_port *ap = dev->link->ap; |
Jens Axboe | 9ce8e30 | 2008-08-27 15:23:18 +0200 | [diff] [blame] | 2163 | |
| 2164 | if (ata_dev_blacklisted(dev) & ATA_HORKAGE_BRIDGE_OK) |
| 2165 | return 0; |
| 2166 | |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2167 | return ((ap->cbl == ATA_CBL_SATA) && (!ata_id_is_sata(dev->id))); |
Tejun Heo | 4b2f3ed | 2006-03-01 16:09:36 +0900 | [diff] [blame] | 2168 | } |
| 2169 | |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 2170 | static void ata_dev_config_ncq(struct ata_device *dev, |
| 2171 | char *desc, size_t desc_sz) |
| 2172 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2173 | struct ata_port *ap = dev->link->ap; |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 2174 | int hdepth = 0, ddepth = ata_id_queue_depth(dev->id); |
| 2175 | |
| 2176 | if (!ata_id_has_ncq(dev->id)) { |
| 2177 | desc[0] = '\0'; |
| 2178 | return; |
| 2179 | } |
Tejun Heo | 75683fe | 2007-07-05 13:31:27 +0900 | [diff] [blame] | 2180 | if (dev->horkage & ATA_HORKAGE_NONCQ) { |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 2181 | snprintf(desc, desc_sz, "NCQ (not used)"); |
| 2182 | return; |
| 2183 | } |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 2184 | if (ap->flags & ATA_FLAG_NCQ) { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2185 | hdepth = min(ap->scsi_host->can_queue, ATA_MAX_QUEUE - 1); |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 2186 | dev->flags |= ATA_DFLAG_NCQ; |
| 2187 | } |
| 2188 | |
| 2189 | if (hdepth >= ddepth) |
| 2190 | snprintf(desc, desc_sz, "NCQ (depth %d)", ddepth); |
| 2191 | else |
| 2192 | snprintf(desc, desc_sz, "NCQ (depth %d/%d)", hdepth, ddepth); |
| 2193 | } |
| 2194 | |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2195 | /** |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2196 | * ata_dev_configure - Configure the specified ATA/ATAPI device |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2197 | * @dev: Target device to configure |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2198 | * |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2199 | * Configure @dev according to @dev->id. Generic and low-level |
| 2200 | * driver specific fixups are also applied. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2201 | * |
| 2202 | * LOCKING: |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2203 | * Kernel thread context (may sleep) |
| 2204 | * |
| 2205 | * RETURNS: |
| 2206 | * 0 on success, -errno otherwise |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2207 | */ |
Tejun Heo | efdaedc | 2006-11-01 18:38:52 +0900 | [diff] [blame] | 2208 | int ata_dev_configure(struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2209 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2210 | struct ata_port *ap = dev->link->ap; |
| 2211 | struct ata_eh_context *ehc = &dev->link->eh_context; |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 2212 | int print_info = ehc->i.flags & ATA_EHI_PRINTINFO; |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2213 | const u16 *id = dev->id; |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 2214 | unsigned long xfer_mask; |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 2215 | char revbuf[7]; /* XYZ-99\0 */ |
Eric D. Mudama | 3f64f56 | 2007-01-30 23:00:40 -0700 | [diff] [blame] | 2216 | char fwrevbuf[ATA_ID_FW_REV_LEN+1]; |
| 2217 | char modelbuf[ATA_ID_PROD_LEN+1]; |
Brian King | e6d902a | 2006-06-28 08:30:31 -0500 | [diff] [blame] | 2218 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2219 | |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 2220 | if (!ata_dev_enabled(dev) && ata_msg_info(ap)) { |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 2221 | ata_dev_printk(dev, KERN_INFO, "%s: ENTER/EXIT -- nodev\n", |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 2222 | __func__); |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2223 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2224 | } |
| 2225 | |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 2226 | if (ata_msg_probe(ap)) |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 2227 | ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2228 | |
Tejun Heo | 75683fe | 2007-07-05 13:31:27 +0900 | [diff] [blame] | 2229 | /* set horkage */ |
| 2230 | dev->horkage |= ata_dev_blacklisted(dev); |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 2231 | ata_force_horkage(dev); |
Tejun Heo | 75683fe | 2007-07-05 13:31:27 +0900 | [diff] [blame] | 2232 | |
Tejun Heo | 50af2fa | 2008-05-19 01:15:14 +0900 | [diff] [blame] | 2233 | if (dev->horkage & ATA_HORKAGE_DISABLE) { |
| 2234 | ata_dev_printk(dev, KERN_INFO, |
| 2235 | "unsupported device, disabling\n"); |
| 2236 | ata_dev_disable(dev); |
| 2237 | return 0; |
| 2238 | } |
| 2239 | |
Tejun Heo | 2486fa5 | 2008-07-31 07:52:40 +0900 | [diff] [blame] | 2240 | if ((!atapi_enabled || (ap->flags & ATA_FLAG_NO_ATAPI)) && |
| 2241 | dev->class == ATA_DEV_ATAPI) { |
| 2242 | ata_dev_printk(dev, KERN_WARNING, |
| 2243 | "WARNING: ATAPI is %s, device ignored.\n", |
| 2244 | atapi_enabled ? "not supported with this driver" |
| 2245 | : "disabled"); |
| 2246 | ata_dev_disable(dev); |
| 2247 | return 0; |
| 2248 | } |
| 2249 | |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 2250 | /* let ACPI work its magic */ |
| 2251 | rc = ata_acpi_on_devcfg(dev); |
| 2252 | if (rc) |
| 2253 | return rc; |
Kristen Carlson Accardi | 08573a8 | 2006-11-10 16:14:47 -0800 | [diff] [blame] | 2254 | |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 2255 | /* massage HPA, do it early as it might change IDENTIFY data */ |
| 2256 | rc = ata_hpa_resize(dev); |
| 2257 | if (rc) |
| 2258 | return rc; |
| 2259 | |
Tejun Heo | c39f5eb | 2006-03-13 19:51:19 +0900 | [diff] [blame] | 2260 | /* print device capabilities */ |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 2261 | if (ata_msg_probe(ap)) |
Tejun Heo | 8857455 | 2006-06-25 20:00:35 +0900 | [diff] [blame] | 2262 | ata_dev_printk(dev, KERN_DEBUG, |
| 2263 | "%s: cfg 49:%04x 82:%04x 83:%04x 84:%04x " |
| 2264 | "85:%04x 86:%04x 87:%04x 88:%04x\n", |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 2265 | __func__, |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 2266 | id[49], id[82], id[83], id[84], |
| 2267 | id[85], id[86], id[87], id[88]); |
Tejun Heo | c39f5eb | 2006-03-13 19:51:19 +0900 | [diff] [blame] | 2268 | |
Tejun Heo | 208a993 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 2269 | /* initialize to-be-configured parameters */ |
Tejun Heo | ea1dd4e | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 2270 | dev->flags &= ~ATA_DFLAG_CFG_MASK; |
Tejun Heo | 208a993 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 2271 | dev->max_sectors = 0; |
| 2272 | dev->cdb_len = 0; |
| 2273 | dev->n_sectors = 0; |
| 2274 | dev->cylinders = 0; |
| 2275 | dev->heads = 0; |
| 2276 | dev->sectors = 0; |
| 2277 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2278 | /* |
| 2279 | * common ATA, ATAPI feature tests |
| 2280 | */ |
| 2281 | |
Tejun Heo | ff8854b | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 2282 | /* find max transfer mode; for printk only */ |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2283 | xfer_mask = ata_id_xfermask(id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2284 | |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 2285 | if (ata_msg_probe(ap)) |
| 2286 | ata_dump_id(id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2287 | |
Albert Lee | ef143d5 | 2007-06-05 13:01:33 +0800 | [diff] [blame] | 2288 | /* SCSI only uses 4-char revisions, dump full 8 chars from ATA */ |
| 2289 | ata_id_c_string(dev->id, fwrevbuf, ATA_ID_FW_REV, |
| 2290 | sizeof(fwrevbuf)); |
| 2291 | |
| 2292 | ata_id_c_string(dev->id, modelbuf, ATA_ID_PROD, |
| 2293 | sizeof(modelbuf)); |
| 2294 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2295 | /* ATA-specific feature tests */ |
| 2296 | if (dev->class == ATA_DEV_ATA) { |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 2297 | if (ata_id_is_cfa(id)) { |
| 2298 | if (id[162] & 1) /* CPRM may make this media unusable */ |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 2299 | ata_dev_printk(dev, KERN_WARNING, |
| 2300 | "supports DRM functions and may " |
| 2301 | "not be fully accessable.\n"); |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 2302 | snprintf(revbuf, 7, "CFA"); |
Alan Cox | ae8d4ee | 2007-11-04 22:05:49 -0500 | [diff] [blame] | 2303 | } else { |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 2304 | snprintf(revbuf, 7, "ATA-%d", ata_id_major_version(id)); |
Alan Cox | ae8d4ee | 2007-11-04 22:05:49 -0500 | [diff] [blame] | 2305 | /* Warn the user if the device has TPM extensions */ |
| 2306 | if (ata_id_has_tpm(id)) |
| 2307 | ata_dev_printk(dev, KERN_WARNING, |
| 2308 | "supports DRM functions and may " |
| 2309 | "not be fully accessable.\n"); |
| 2310 | } |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 2311 | |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2312 | dev->n_sectors = ata_id_n_sectors(id); |
Tejun Heo | 2940740 | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 2313 | |
Eric D. Mudama | 3f64f56 | 2007-01-30 23:00:40 -0700 | [diff] [blame] | 2314 | if (dev->id[59] & 0x100) |
| 2315 | dev->multi_count = dev->id[59] & 0xff; |
| 2316 | |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2317 | if (ata_id_has_lba(id)) { |
Tejun Heo | 4c2d721 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 2318 | const char *lba_desc; |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 2319 | char ncq_desc[20]; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2320 | |
Tejun Heo | 4c2d721 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 2321 | lba_desc = "LBA"; |
| 2322 | dev->flags |= ATA_DFLAG_LBA; |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2323 | if (ata_id_has_lba48(id)) { |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2324 | dev->flags |= ATA_DFLAG_LBA48; |
Tejun Heo | 4c2d721 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 2325 | lba_desc = "LBA48"; |
Tejun Heo | 6fc49ad | 2006-11-11 20:10:45 +0900 | [diff] [blame] | 2326 | |
| 2327 | if (dev->n_sectors >= (1UL << 28) && |
| 2328 | ata_id_has_flush_ext(id)) |
| 2329 | dev->flags |= ATA_DFLAG_FLUSH_EXT; |
Tejun Heo | 4c2d721 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 2330 | } |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2331 | |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 2332 | /* config NCQ */ |
| 2333 | ata_dev_config_ncq(dev, ncq_desc, sizeof(ncq_desc)); |
| 2334 | |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2335 | /* print device info to dmesg */ |
Eric D. Mudama | 3f64f56 | 2007-01-30 23:00:40 -0700 | [diff] [blame] | 2336 | if (ata_msg_drv(ap) && print_info) { |
| 2337 | ata_dev_printk(dev, KERN_INFO, |
| 2338 | "%s: %s, %s, max %s\n", |
| 2339 | revbuf, modelbuf, fwrevbuf, |
| 2340 | ata_mode_string(xfer_mask)); |
| 2341 | ata_dev_printk(dev, KERN_INFO, |
| 2342 | "%Lu sectors, multi %u: %s %s\n", |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 2343 | (unsigned long long)dev->n_sectors, |
Eric D. Mudama | 3f64f56 | 2007-01-30 23:00:40 -0700 | [diff] [blame] | 2344 | dev->multi_count, lba_desc, ncq_desc); |
| 2345 | } |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2346 | } else { |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2347 | /* CHS */ |
| 2348 | |
| 2349 | /* Default translation */ |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2350 | dev->cylinders = id[1]; |
| 2351 | dev->heads = id[3]; |
| 2352 | dev->sectors = id[6]; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2353 | |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2354 | if (ata_id_current_chs_valid(id)) { |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2355 | /* Current CHS translation is valid. */ |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2356 | dev->cylinders = id[54]; |
| 2357 | dev->heads = id[55]; |
| 2358 | dev->sectors = id[56]; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2359 | } |
| 2360 | |
| 2361 | /* print device info to dmesg */ |
Eric D. Mudama | 3f64f56 | 2007-01-30 23:00:40 -0700 | [diff] [blame] | 2362 | if (ata_msg_drv(ap) && print_info) { |
Tejun Heo | 8857455 | 2006-06-25 20:00:35 +0900 | [diff] [blame] | 2363 | ata_dev_printk(dev, KERN_INFO, |
Eric D. Mudama | 3f64f56 | 2007-01-30 23:00:40 -0700 | [diff] [blame] | 2364 | "%s: %s, %s, max %s\n", |
| 2365 | revbuf, modelbuf, fwrevbuf, |
| 2366 | ata_mode_string(xfer_mask)); |
Jeff Garzik | a84471f | 2007-02-26 05:51:33 -0500 | [diff] [blame] | 2367 | ata_dev_printk(dev, KERN_INFO, |
Eric D. Mudama | 3f64f56 | 2007-01-30 23:00:40 -0700 | [diff] [blame] | 2368 | "%Lu sectors, multi %u, CHS %u/%u/%u\n", |
| 2369 | (unsigned long long)dev->n_sectors, |
| 2370 | dev->multi_count, dev->cylinders, |
| 2371 | dev->heads, dev->sectors); |
| 2372 | } |
Albert Lee | 07f6f7d | 2005-11-01 19:33:20 +0800 | [diff] [blame] | 2373 | } |
| 2374 | |
Tejun Heo | 6e7846e | 2006-02-12 23:32:58 +0900 | [diff] [blame] | 2375 | dev->cdb_len = 16; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2376 | } |
| 2377 | |
| 2378 | /* ATAPI-specific feature tests */ |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 2379 | else if (dev->class == ATA_DEV_ATAPI) { |
Tejun Heo | 854c73a | 2007-09-23 13:14:11 +0900 | [diff] [blame] | 2380 | const char *cdb_intr_string = ""; |
| 2381 | const char *atapi_an_string = ""; |
Tejun Heo | 9116300 | 2008-02-21 13:25:50 +0900 | [diff] [blame] | 2382 | const char *dma_dir_string = ""; |
Tejun Heo | 7d77b24 | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 2383 | u32 sntf; |
Albert Lee | 08a556d | 2006-03-31 13:29:04 +0800 | [diff] [blame] | 2384 | |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2385 | rc = atapi_cdb_len(id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2386 | if ((rc < 12) || (rc > ATAPI_CDB_LEN)) { |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 2387 | if (ata_msg_warn(ap)) |
Tejun Heo | 8857455 | 2006-06-25 20:00:35 +0900 | [diff] [blame] | 2388 | ata_dev_printk(dev, KERN_WARNING, |
| 2389 | "unsupported CDB len\n"); |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2390 | rc = -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2391 | goto err_out_nosup; |
| 2392 | } |
Tejun Heo | 6e7846e | 2006-02-12 23:32:58 +0900 | [diff] [blame] | 2393 | dev->cdb_len = (unsigned int) rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2394 | |
Tejun Heo | 7d77b24 | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 2395 | /* Enable ATAPI AN if both the host and device have |
| 2396 | * the support. If PMP is attached, SNTF is required |
| 2397 | * to enable ATAPI AN to discern between PHY status |
| 2398 | * changed notifications and ATAPI ANs. |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 2399 | */ |
Tejun Heo | 7d77b24 | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 2400 | if ((ap->flags & ATA_FLAG_AN) && ata_id_has_atapi_AN(id) && |
Tejun Heo | 071f44b | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 2401 | (!sata_pmp_attached(ap) || |
Tejun Heo | 7d77b24 | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 2402 | sata_scr_read(&ap->link, SCR_NOTIFICATION, &sntf) == 0)) { |
Tejun Heo | 854c73a | 2007-09-23 13:14:11 +0900 | [diff] [blame] | 2403 | unsigned int err_mask; |
| 2404 | |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 2405 | /* issue SET feature command to turn this on */ |
Jeff Garzik | 218f3d3 | 2007-10-25 00:33:27 -0400 | [diff] [blame] | 2406 | err_mask = ata_dev_set_feature(dev, |
| 2407 | SETFEATURES_SATA_ENABLE, SATA_AN); |
Tejun Heo | 854c73a | 2007-09-23 13:14:11 +0900 | [diff] [blame] | 2408 | if (err_mask) |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 2409 | ata_dev_printk(dev, KERN_ERR, |
Tejun Heo | 854c73a | 2007-09-23 13:14:11 +0900 | [diff] [blame] | 2410 | "failed to enable ATAPI AN " |
| 2411 | "(err_mask=0x%x)\n", err_mask); |
| 2412 | else { |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 2413 | dev->flags |= ATA_DFLAG_AN; |
Tejun Heo | 854c73a | 2007-09-23 13:14:11 +0900 | [diff] [blame] | 2414 | atapi_an_string = ", ATAPI AN"; |
| 2415 | } |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 2416 | } |
| 2417 | |
Albert Lee | 08a556d | 2006-03-31 13:29:04 +0800 | [diff] [blame] | 2418 | if (ata_id_cdb_intr(dev->id)) { |
Albert Lee | 312f7da | 2005-09-27 17:38:03 +0800 | [diff] [blame] | 2419 | dev->flags |= ATA_DFLAG_CDB_INTR; |
Albert Lee | 08a556d | 2006-03-31 13:29:04 +0800 | [diff] [blame] | 2420 | cdb_intr_string = ", CDB intr"; |
| 2421 | } |
Albert Lee | 312f7da | 2005-09-27 17:38:03 +0800 | [diff] [blame] | 2422 | |
Tejun Heo | 9116300 | 2008-02-21 13:25:50 +0900 | [diff] [blame] | 2423 | if (atapi_dmadir || atapi_id_dmadir(dev->id)) { |
| 2424 | dev->flags |= ATA_DFLAG_DMADIR; |
| 2425 | dma_dir_string = ", DMADIR"; |
| 2426 | } |
| 2427 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2428 | /* print device info to dmesg */ |
Borislav Petkov | 5afc814 | 2006-06-27 14:51:25 +0200 | [diff] [blame] | 2429 | if (ata_msg_drv(ap) && print_info) |
Albert Lee | ef143d5 | 2007-06-05 13:01:33 +0800 | [diff] [blame] | 2430 | ata_dev_printk(dev, KERN_INFO, |
Tejun Heo | 9116300 | 2008-02-21 13:25:50 +0900 | [diff] [blame] | 2431 | "ATAPI: %s, %s, max %s%s%s%s\n", |
Albert Lee | ef143d5 | 2007-06-05 13:01:33 +0800 | [diff] [blame] | 2432 | modelbuf, fwrevbuf, |
Tejun Heo | 12436c3 | 2006-05-15 20:59:15 +0900 | [diff] [blame] | 2433 | ata_mode_string(xfer_mask), |
Tejun Heo | 9116300 | 2008-02-21 13:25:50 +0900 | [diff] [blame] | 2434 | cdb_intr_string, atapi_an_string, |
| 2435 | dma_dir_string); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2436 | } |
| 2437 | |
Tejun Heo | 914ed35 | 2006-11-01 18:39:55 +0900 | [diff] [blame] | 2438 | /* determine max_sectors */ |
| 2439 | dev->max_sectors = ATA_MAX_SECTORS; |
| 2440 | if (dev->flags & ATA_DFLAG_LBA48) |
| 2441 | dev->max_sectors = ATA_MAX_SECTORS_LBA48; |
| 2442 | |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 2443 | if (!(dev->horkage & ATA_HORKAGE_IPM)) { |
| 2444 | if (ata_id_has_hipm(dev->id)) |
| 2445 | dev->flags |= ATA_DFLAG_HIPM; |
| 2446 | if (ata_id_has_dipm(dev->id)) |
| 2447 | dev->flags |= ATA_DFLAG_DIPM; |
| 2448 | } |
| 2449 | |
Alan Cox | c5038fc | 2007-10-25 14:21:16 +0100 | [diff] [blame] | 2450 | /* Limit PATA drive on SATA cable bridge transfers to udma5, |
| 2451 | 200 sectors */ |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 2452 | if (ata_dev_knobble(dev)) { |
Borislav Petkov | 5afc814 | 2006-06-27 14:51:25 +0200 | [diff] [blame] | 2453 | if (ata_msg_drv(ap) && print_info) |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 2454 | ata_dev_printk(dev, KERN_INFO, |
| 2455 | "applying bridge limits\n"); |
Tejun Heo | 5a52913 | 2006-03-24 14:07:50 +0900 | [diff] [blame] | 2456 | dev->udma_mask &= ATA_UDMA5; |
Tejun Heo | 4b2f3ed | 2006-03-01 16:09:36 +0900 | [diff] [blame] | 2457 | dev->max_sectors = ATA_MAX_SECTORS; |
| 2458 | } |
| 2459 | |
Tony Battersby | f8d8e57 | 2007-10-30 11:44:35 -0400 | [diff] [blame] | 2460 | if ((dev->class == ATA_DEV_ATAPI) && |
Albert Lee | f442cd8 | 2007-11-15 10:35:47 +0900 | [diff] [blame] | 2461 | (atapi_command_packet_set(id) == TYPE_TAPE)) { |
Tony Battersby | f8d8e57 | 2007-10-30 11:44:35 -0400 | [diff] [blame] | 2462 | dev->max_sectors = ATA_MAX_SECTORS_TAPE; |
Albert Lee | f442cd8 | 2007-11-15 10:35:47 +0900 | [diff] [blame] | 2463 | dev->horkage |= ATA_HORKAGE_STUCK_ERR; |
| 2464 | } |
Tony Battersby | f8d8e57 | 2007-10-30 11:44:35 -0400 | [diff] [blame] | 2465 | |
Tejun Heo | 75683fe | 2007-07-05 13:31:27 +0900 | [diff] [blame] | 2466 | if (dev->horkage & ATA_HORKAGE_MAX_SEC_128) |
Tejun Heo | 03ec52d | 2007-04-12 13:38:11 +0900 | [diff] [blame] | 2467 | dev->max_sectors = min_t(unsigned int, ATA_MAX_SECTORS_128, |
| 2468 | dev->max_sectors); |
Albert Lee | 18d6e9d | 2007-04-02 11:34:15 +0800 | [diff] [blame] | 2469 | |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 2470 | if (ata_dev_blacklisted(dev) & ATA_HORKAGE_IPM) { |
| 2471 | dev->horkage |= ATA_HORKAGE_IPM; |
| 2472 | |
| 2473 | /* reset link pm_policy for this port to no pm */ |
| 2474 | ap->pm_policy = MAX_PERFORMANCE; |
| 2475 | } |
| 2476 | |
Tejun Heo | 4b2f3ed | 2006-03-01 16:09:36 +0900 | [diff] [blame] | 2477 | if (ap->ops->dev_config) |
Alan | cd0d3bb | 2007-03-02 00:56:15 +0000 | [diff] [blame] | 2478 | ap->ops->dev_config(dev); |
Tejun Heo | 4b2f3ed | 2006-03-01 16:09:36 +0900 | [diff] [blame] | 2479 | |
Alan Cox | c5038fc | 2007-10-25 14:21:16 +0100 | [diff] [blame] | 2480 | if (dev->horkage & ATA_HORKAGE_DIAGNOSTIC) { |
| 2481 | /* Let the user know. We don't want to disallow opens for |
| 2482 | rescue purposes, or in case the vendor is just a blithering |
| 2483 | idiot. Do this after the dev_config call as some controllers |
| 2484 | with buggy firmware may want to avoid reporting false device |
| 2485 | bugs */ |
| 2486 | |
| 2487 | if (print_info) { |
| 2488 | ata_dev_printk(dev, KERN_WARNING, |
| 2489 | "Drive reports diagnostics failure. This may indicate a drive\n"); |
| 2490 | ata_dev_printk(dev, KERN_WARNING, |
| 2491 | "fault or invalid emulation. Contact drive vendor for information.\n"); |
| 2492 | } |
| 2493 | } |
| 2494 | |
Tejun Heo | ac70a96 | 2008-11-27 13:36:48 +0900 | [diff] [blame] | 2495 | if ((dev->horkage & ATA_HORKAGE_FIRMWARE_WARN) && print_info) { |
| 2496 | ata_dev_printk(dev, KERN_WARNING, "WARNING: device requires " |
| 2497 | "firmware update to be fully functional.\n"); |
| 2498 | ata_dev_printk(dev, KERN_WARNING, " contact the vendor " |
| 2499 | "or visit http://ata.wiki.kernel.org.\n"); |
| 2500 | } |
| 2501 | |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2502 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2503 | |
| 2504 | err_out_nosup: |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 2505 | if (ata_msg_probe(ap)) |
Tejun Heo | 8857455 | 2006-06-25 20:00:35 +0900 | [diff] [blame] | 2506 | ata_dev_printk(dev, KERN_DEBUG, |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 2507 | "%s: EXIT, err\n", __func__); |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2508 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2509 | } |
| 2510 | |
| 2511 | /** |
Alan Cox | 2e41e8e | 2007-03-08 23:19:19 +0000 | [diff] [blame] | 2512 | * ata_cable_40wire - return 40 wire cable type |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 2513 | * @ap: port |
| 2514 | * |
Alan Cox | 2e41e8e | 2007-03-08 23:19:19 +0000 | [diff] [blame] | 2515 | * Helper method for drivers which want to hardwire 40 wire cable |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 2516 | * detection. |
| 2517 | */ |
| 2518 | |
| 2519 | int ata_cable_40wire(struct ata_port *ap) |
| 2520 | { |
| 2521 | return ATA_CBL_PATA40; |
| 2522 | } |
| 2523 | |
| 2524 | /** |
Alan Cox | 2e41e8e | 2007-03-08 23:19:19 +0000 | [diff] [blame] | 2525 | * ata_cable_80wire - return 80 wire cable type |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 2526 | * @ap: port |
| 2527 | * |
Alan Cox | 2e41e8e | 2007-03-08 23:19:19 +0000 | [diff] [blame] | 2528 | * Helper method for drivers which want to hardwire 80 wire cable |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 2529 | * detection. |
| 2530 | */ |
| 2531 | |
| 2532 | int ata_cable_80wire(struct ata_port *ap) |
| 2533 | { |
| 2534 | return ATA_CBL_PATA80; |
| 2535 | } |
| 2536 | |
| 2537 | /** |
| 2538 | * ata_cable_unknown - return unknown PATA cable. |
| 2539 | * @ap: port |
| 2540 | * |
| 2541 | * Helper method for drivers which have no PATA cable detection. |
| 2542 | */ |
| 2543 | |
| 2544 | int ata_cable_unknown(struct ata_port *ap) |
| 2545 | { |
| 2546 | return ATA_CBL_PATA_UNK; |
| 2547 | } |
| 2548 | |
| 2549 | /** |
Tejun Heo | c88f90c | 2007-11-27 19:43:48 +0900 | [diff] [blame] | 2550 | * ata_cable_ignore - return ignored PATA cable. |
| 2551 | * @ap: port |
| 2552 | * |
| 2553 | * Helper method for drivers which don't use cable type to limit |
| 2554 | * transfer mode. |
| 2555 | */ |
| 2556 | int ata_cable_ignore(struct ata_port *ap) |
| 2557 | { |
| 2558 | return ATA_CBL_PATA_IGN; |
| 2559 | } |
| 2560 | |
| 2561 | /** |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 2562 | * ata_cable_sata - return SATA cable type |
| 2563 | * @ap: port |
| 2564 | * |
| 2565 | * Helper method for drivers which have SATA cables |
| 2566 | */ |
| 2567 | |
| 2568 | int ata_cable_sata(struct ata_port *ap) |
| 2569 | { |
| 2570 | return ATA_CBL_SATA; |
| 2571 | } |
| 2572 | |
| 2573 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2574 | * ata_bus_probe - Reset and probe ATA bus |
| 2575 | * @ap: Bus to probe |
| 2576 | * |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 2577 | * Master ATA bus probing function. Initiates a hardware-dependent |
| 2578 | * bus reset, then attempts to identify any devices found on |
| 2579 | * the bus. |
| 2580 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2581 | * LOCKING: |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 2582 | * PCI/etc. bus probe sem. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2583 | * |
| 2584 | * RETURNS: |
Tejun Heo | 96072e6 | 2006-04-01 01:38:17 +0900 | [diff] [blame] | 2585 | * Zero on success, negative errno otherwise. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2586 | */ |
| 2587 | |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 2588 | int ata_bus_probe(struct ata_port *ap) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2589 | { |
Tejun Heo | 28ca5c5 | 2006-03-01 16:09:36 +0900 | [diff] [blame] | 2590 | unsigned int classes[ATA_MAX_DEVICES]; |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2591 | int tries[ATA_MAX_DEVICES]; |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2592 | int rc; |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 2593 | struct ata_device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2594 | |
Tejun Heo | 28ca5c5 | 2006-03-01 16:09:36 +0900 | [diff] [blame] | 2595 | ata_port_probe(ap); |
| 2596 | |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2597 | ata_link_for_each_dev(dev, &ap->link) |
| 2598 | tries[dev->devno] = ATA_PROBE_MAX_TRIES; |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2599 | |
| 2600 | retry: |
Tejun Heo | cdeab11 | 2007-10-29 16:41:09 +0900 | [diff] [blame] | 2601 | ata_link_for_each_dev(dev, &ap->link) { |
| 2602 | /* If we issue an SRST then an ATA drive (not ATAPI) |
| 2603 | * may change configuration and be in PIO0 timing. If |
| 2604 | * we do a hard reset (or are coming from power on) |
| 2605 | * this is true for ATA or ATAPI. Until we've set a |
| 2606 | * suitable controller mode we should not touch the |
| 2607 | * bus as we may be talking too fast. |
| 2608 | */ |
| 2609 | dev->pio_mode = XFER_PIO_0; |
| 2610 | |
| 2611 | /* If the controller has a pio mode setup function |
| 2612 | * then use it to set the chipset to rights. Don't |
| 2613 | * touch the DMA setup as that will be dealt with when |
| 2614 | * configuring devices. |
| 2615 | */ |
| 2616 | if (ap->ops->set_piomode) |
| 2617 | ap->ops->set_piomode(ap, dev); |
| 2618 | } |
| 2619 | |
Tejun Heo | 2044470 | 2006-03-13 01:57:01 +0900 | [diff] [blame] | 2620 | /* reset and determine device classes */ |
Tejun Heo | 52783c5 | 2006-05-31 18:28:22 +0900 | [diff] [blame] | 2621 | ap->ops->phy_reset(ap); |
Tejun Heo | 2061a47 | 2006-03-12 00:57:39 +0900 | [diff] [blame] | 2622 | |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2623 | ata_link_for_each_dev(dev, &ap->link) { |
Tejun Heo | 52783c5 | 2006-05-31 18:28:22 +0900 | [diff] [blame] | 2624 | if (!(ap->flags & ATA_FLAG_DISABLED) && |
| 2625 | dev->class != ATA_DEV_UNKNOWN) |
| 2626 | classes[dev->devno] = dev->class; |
| 2627 | else |
| 2628 | classes[dev->devno] = ATA_DEV_NONE; |
Tejun Heo | 2044470 | 2006-03-13 01:57:01 +0900 | [diff] [blame] | 2629 | |
Tejun Heo | 52783c5 | 2006-05-31 18:28:22 +0900 | [diff] [blame] | 2630 | dev->class = ATA_DEV_UNKNOWN; |
Tejun Heo | 28ca5c5 | 2006-03-01 16:09:36 +0900 | [diff] [blame] | 2631 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2632 | |
Tejun Heo | 52783c5 | 2006-05-31 18:28:22 +0900 | [diff] [blame] | 2633 | ata_port_probe(ap); |
Tejun Heo | 2044470 | 2006-03-13 01:57:01 +0900 | [diff] [blame] | 2634 | |
Jeff Garzik | f31f0cc | 2007-03-02 17:47:28 -0500 | [diff] [blame] | 2635 | /* read IDENTIFY page and configure devices. We have to do the identify |
| 2636 | specific sequence bass-ackwards so that PDIAG- is released by |
| 2637 | the slave device */ |
| 2638 | |
Bartlomiej Zolnierkiewicz | a4ba7fe | 2008-04-02 10:35:15 +0900 | [diff] [blame] | 2639 | ata_link_for_each_dev_reverse(dev, &ap->link) { |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2640 | if (tries[dev->devno]) |
| 2641 | dev->class = classes[dev->devno]; |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2642 | |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 2643 | if (!ata_dev_enabled(dev)) |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2644 | continue; |
| 2645 | |
Tejun Heo | bff0464 | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 2646 | rc = ata_dev_read_id(dev, &dev->class, ATA_READID_POSTRESET, |
| 2647 | dev->id); |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2648 | if (rc) |
| 2649 | goto fail; |
Jeff Garzik | f31f0cc | 2007-03-02 17:47:28 -0500 | [diff] [blame] | 2650 | } |
| 2651 | |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 2652 | /* Now ask for the cable type as PDIAG- should have been released */ |
| 2653 | if (ap->ops->cable_detect) |
| 2654 | ap->cbl = ap->ops->cable_detect(ap); |
| 2655 | |
Alan Cox | 614fe29 | 2007-08-22 23:22:45 +0100 | [diff] [blame] | 2656 | /* We may have SATA bridge glue hiding here irrespective of the |
| 2657 | reported cable types and sensed types */ |
| 2658 | ata_link_for_each_dev(dev, &ap->link) { |
| 2659 | if (!ata_dev_enabled(dev)) |
| 2660 | continue; |
| 2661 | /* SATA drives indicate we have a bridge. We don't know which |
| 2662 | end of the link the bridge is which is a problem */ |
| 2663 | if (ata_id_is_sata(dev->id)) |
| 2664 | ap->cbl = ATA_CBL_SATA; |
| 2665 | } |
| 2666 | |
Jeff Garzik | f31f0cc | 2007-03-02 17:47:28 -0500 | [diff] [blame] | 2667 | /* After the identify sequence we can now set up the devices. We do |
| 2668 | this in the normal order so that the user doesn't get confused */ |
| 2669 | |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2670 | ata_link_for_each_dev(dev, &ap->link) { |
Jeff Garzik | f31f0cc | 2007-03-02 17:47:28 -0500 | [diff] [blame] | 2671 | if (!ata_dev_enabled(dev)) |
| 2672 | continue; |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2673 | |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2674 | ap->link.eh_context.i.flags |= ATA_EHI_PRINTINFO; |
Tejun Heo | efdaedc | 2006-11-01 18:38:52 +0900 | [diff] [blame] | 2675 | rc = ata_dev_configure(dev); |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2676 | ap->link.eh_context.i.flags &= ~ATA_EHI_PRINTINFO; |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2677 | if (rc) |
| 2678 | goto fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2679 | } |
| 2680 | |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 2681 | /* configure transfer mode */ |
Tejun Heo | 0260731 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2682 | rc = ata_set_mode(&ap->link, &dev); |
Tejun Heo | 4ae72a1 | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 2683 | if (rc) |
Tejun Heo | 51713d3 | 2006-04-11 22:26:29 +0900 | [diff] [blame] | 2684 | goto fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2685 | |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2686 | ata_link_for_each_dev(dev, &ap->link) |
| 2687 | if (ata_dev_enabled(dev)) |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 2688 | return 0; |
Alan Cox | e35a9e0 | 2006-03-27 18:46:37 +0100 | [diff] [blame] | 2689 | |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 2690 | /* no device present, disable port */ |
| 2691 | ata_port_disable(ap); |
Tejun Heo | 96072e6 | 2006-04-01 01:38:17 +0900 | [diff] [blame] | 2692 | return -ENODEV; |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2693 | |
| 2694 | fail: |
Tejun Heo | 4ae72a1 | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 2695 | tries[dev->devno]--; |
| 2696 | |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2697 | switch (rc) { |
| 2698 | case -EINVAL: |
Tejun Heo | 4ae72a1 | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 2699 | /* eeek, something went very wrong, give up */ |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2700 | tries[dev->devno] = 0; |
| 2701 | break; |
Tejun Heo | 4ae72a1 | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 2702 | |
| 2703 | case -ENODEV: |
| 2704 | /* give it just one more chance */ |
| 2705 | tries[dev->devno] = min(tries[dev->devno], 1); |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2706 | case -EIO: |
Tejun Heo | 4ae72a1 | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 2707 | if (tries[dev->devno] == 1) { |
| 2708 | /* This is the last chance, better to slow |
| 2709 | * down than lose it. |
| 2710 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2711 | sata_down_spd_limit(&ap->link); |
Tejun Heo | 4ae72a1 | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 2712 | ata_down_xfermask_limit(dev, ATA_DNXFER_PIO); |
| 2713 | } |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2714 | } |
| 2715 | |
Tejun Heo | 4ae72a1 | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 2716 | if (!tries[dev->devno]) |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 2717 | ata_dev_disable(dev); |
Tejun Heo | ec57375 | 2006-04-11 22:26:29 +0900 | [diff] [blame] | 2718 | |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2719 | goto retry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2720 | } |
| 2721 | |
| 2722 | /** |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 2723 | * ata_port_probe - Mark port as enabled |
| 2724 | * @ap: Port for which we indicate enablement |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2725 | * |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 2726 | * Modify @ap data structure such that the system |
| 2727 | * thinks that the entire port is enabled. |
| 2728 | * |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2729 | * LOCKING: host lock, or some other form of |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 2730 | * serialization. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2731 | */ |
| 2732 | |
| 2733 | void ata_port_probe(struct ata_port *ap) |
| 2734 | { |
Tejun Heo | 198e0fe | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 2735 | ap->flags &= ~ATA_FLAG_DISABLED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2736 | } |
| 2737 | |
| 2738 | /** |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2739 | * sata_print_link_status - Print SATA link status |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2740 | * @link: SATA link to printk link status about |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2741 | * |
| 2742 | * This function prints link speed and status of a SATA link. |
| 2743 | * |
| 2744 | * LOCKING: |
| 2745 | * None. |
| 2746 | */ |
Adrian Bunk | 6bdb4fc | 2008-04-21 11:51:11 +0300 | [diff] [blame] | 2747 | static void sata_print_link_status(struct ata_link *link) |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2748 | { |
Tejun Heo | 6d5f973 | 2006-04-03 00:09:41 +0900 | [diff] [blame] | 2749 | u32 sstatus, scontrol, tmp; |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2750 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2751 | if (sata_scr_read(link, SCR_STATUS, &sstatus)) |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2752 | return; |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2753 | sata_scr_read(link, SCR_CONTROL, &scontrol); |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2754 | |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 2755 | if (ata_phys_link_online(link)) { |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2756 | tmp = (sstatus >> 4) & 0xf; |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2757 | ata_link_printk(link, KERN_INFO, |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 2758 | "SATA link up %s (SStatus %X SControl %X)\n", |
| 2759 | sata_spd_string(tmp), sstatus, scontrol); |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2760 | } else { |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2761 | ata_link_printk(link, KERN_INFO, |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 2762 | "SATA link down (SStatus %X SControl %X)\n", |
| 2763 | sstatus, scontrol); |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2764 | } |
| 2765 | } |
| 2766 | |
| 2767 | /** |
Alan Cox | ebdfca6 | 2006-03-23 15:38:34 +0000 | [diff] [blame] | 2768 | * ata_dev_pair - return other device on cable |
Alan Cox | ebdfca6 | 2006-03-23 15:38:34 +0000 | [diff] [blame] | 2769 | * @adev: device |
| 2770 | * |
| 2771 | * Obtain the other device on the same cable, or if none is |
| 2772 | * present NULL is returned |
| 2773 | */ |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 2774 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 2775 | struct ata_device *ata_dev_pair(struct ata_device *adev) |
Alan Cox | ebdfca6 | 2006-03-23 15:38:34 +0000 | [diff] [blame] | 2776 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2777 | struct ata_link *link = adev->link; |
| 2778 | struct ata_device *pair = &link->device[1 - adev->devno]; |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 2779 | if (!ata_dev_enabled(pair)) |
Alan Cox | ebdfca6 | 2006-03-23 15:38:34 +0000 | [diff] [blame] | 2780 | return NULL; |
| 2781 | return pair; |
| 2782 | } |
| 2783 | |
| 2784 | /** |
Jeff Garzik | 780a87f | 2005-05-30 15:41:05 -0400 | [diff] [blame] | 2785 | * ata_port_disable - Disable port. |
| 2786 | * @ap: Port to be disabled. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2787 | * |
Jeff Garzik | 780a87f | 2005-05-30 15:41:05 -0400 | [diff] [blame] | 2788 | * Modify @ap data structure such that the system |
| 2789 | * thinks that the entire port is disabled, and should |
| 2790 | * never attempt to probe or communicate with devices |
| 2791 | * on this port. |
| 2792 | * |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2793 | * LOCKING: host lock, or some other form of |
Jeff Garzik | 780a87f | 2005-05-30 15:41:05 -0400 | [diff] [blame] | 2794 | * serialization. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2795 | */ |
| 2796 | |
| 2797 | void ata_port_disable(struct ata_port *ap) |
| 2798 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2799 | ap->link.device[0].class = ATA_DEV_NONE; |
| 2800 | ap->link.device[1].class = ATA_DEV_NONE; |
Tejun Heo | 198e0fe | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 2801 | ap->flags |= ATA_FLAG_DISABLED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2802 | } |
| 2803 | |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2804 | /** |
Tejun Heo | 3c567b7 | 2006-05-15 20:57:23 +0900 | [diff] [blame] | 2805 | * sata_down_spd_limit - adjust SATA spd limit downward |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2806 | * @link: Link to adjust SATA spd limit for |
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 | * Adjust SATA spd limit of @link downward. Note that this |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2809 | * function only adjusts the limit. The change must be applied |
Tejun Heo | 3c567b7 | 2006-05-15 20:57:23 +0900 | [diff] [blame] | 2810 | * using sata_set_spd(). |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2811 | * |
| 2812 | * LOCKING: |
| 2813 | * Inherited from caller. |
| 2814 | * |
| 2815 | * RETURNS: |
| 2816 | * 0 on success, negative errno on failure |
| 2817 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2818 | int sata_down_spd_limit(struct ata_link *link) |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2819 | { |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 2820 | u32 sstatus, spd, mask; |
| 2821 | int rc, highbit; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2822 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2823 | if (!sata_scr_valid(link)) |
Tejun Heo | 008a789 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2824 | return -EOPNOTSUPP; |
| 2825 | |
| 2826 | /* If SCR can be read, use it to determine the current SPD. |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2827 | * If not, use cached value in link->sata_spd. |
Tejun Heo | 008a789 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2828 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2829 | rc = sata_scr_read(link, SCR_STATUS, &sstatus); |
Tejun Heo | 008a789 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2830 | if (rc == 0) |
| 2831 | spd = (sstatus >> 4) & 0xf; |
| 2832 | else |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2833 | spd = link->sata_spd; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2834 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2835 | mask = link->sata_spd_limit; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2836 | if (mask <= 1) |
| 2837 | return -EINVAL; |
Tejun Heo | 008a789 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2838 | |
| 2839 | /* unconditionally mask off the highest bit */ |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2840 | highbit = fls(mask) - 1; |
| 2841 | mask &= ~(1 << highbit); |
| 2842 | |
Tejun Heo | 008a789 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2843 | /* Mask off all speeds higher than or equal to the current |
| 2844 | * one. Force 1.5Gbps if current SPD is not available. |
| 2845 | */ |
| 2846 | if (spd > 1) |
| 2847 | mask &= (1 << (spd - 1)) - 1; |
| 2848 | else |
| 2849 | mask &= 1; |
| 2850 | |
| 2851 | /* were we already at the bottom? */ |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2852 | if (!mask) |
| 2853 | return -EINVAL; |
| 2854 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2855 | link->sata_spd_limit = mask; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2856 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2857 | 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] | 2858 | sata_spd_string(fls(mask))); |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2859 | |
| 2860 | return 0; |
| 2861 | } |
| 2862 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2863 | static int __sata_set_spd_needed(struct ata_link *link, u32 *scontrol) |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2864 | { |
Tejun Heo | 5270222 | 2007-10-31 10:17:07 +0900 | [diff] [blame] | 2865 | struct ata_link *host_link = &link->ap->link; |
| 2866 | u32 limit, target, spd; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2867 | |
Tejun Heo | 5270222 | 2007-10-31 10:17:07 +0900 | [diff] [blame] | 2868 | limit = link->sata_spd_limit; |
| 2869 | |
| 2870 | /* Don't configure downstream link faster than upstream link. |
| 2871 | * It doesn't speed up anything and some PMPs choke on such |
| 2872 | * configuration. |
| 2873 | */ |
| 2874 | if (!ata_is_host_link(link) && host_link->sata_spd) |
| 2875 | limit &= (1 << host_link->sata_spd) - 1; |
| 2876 | |
| 2877 | if (limit == UINT_MAX) |
| 2878 | target = 0; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2879 | else |
Tejun Heo | 5270222 | 2007-10-31 10:17:07 +0900 | [diff] [blame] | 2880 | target = fls(limit); |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2881 | |
| 2882 | spd = (*scontrol >> 4) & 0xf; |
Tejun Heo | 5270222 | 2007-10-31 10:17:07 +0900 | [diff] [blame] | 2883 | *scontrol = (*scontrol & ~0xf0) | ((target & 0xf) << 4); |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2884 | |
Tejun Heo | 5270222 | 2007-10-31 10:17:07 +0900 | [diff] [blame] | 2885 | return spd != target; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2886 | } |
| 2887 | |
| 2888 | /** |
Tejun Heo | 3c567b7 | 2006-05-15 20:57:23 +0900 | [diff] [blame] | 2889 | * sata_set_spd_needed - is SATA spd configuration needed |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2890 | * @link: Link in question |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2891 | * |
| 2892 | * Test whether the spd limit in SControl matches |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2893 | * @link->sata_spd_limit. This function is used to determine |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2894 | * whether hardreset is necessary to apply SATA spd |
| 2895 | * configuration. |
| 2896 | * |
| 2897 | * LOCKING: |
| 2898 | * Inherited from caller. |
| 2899 | * |
| 2900 | * RETURNS: |
| 2901 | * 1 if SATA spd configuration is needed, 0 otherwise. |
| 2902 | */ |
Adrian Bunk | 1dc55e8 | 2008-04-21 11:51:17 +0300 | [diff] [blame] | 2903 | static int sata_set_spd_needed(struct ata_link *link) |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2904 | { |
| 2905 | u32 scontrol; |
| 2906 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2907 | if (sata_scr_read(link, SCR_CONTROL, &scontrol)) |
Tejun Heo | db64bcf | 2007-10-31 10:17:06 +0900 | [diff] [blame] | 2908 | return 1; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2909 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2910 | return __sata_set_spd_needed(link, &scontrol); |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2911 | } |
| 2912 | |
| 2913 | /** |
Tejun Heo | 3c567b7 | 2006-05-15 20:57:23 +0900 | [diff] [blame] | 2914 | * sata_set_spd - set SATA spd according to spd limit |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2915 | * @link: Link to set SATA spd for |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2916 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2917 | * Set SATA spd of @link according to sata_spd_limit. |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2918 | * |
| 2919 | * LOCKING: |
| 2920 | * Inherited from caller. |
| 2921 | * |
| 2922 | * RETURNS: |
| 2923 | * 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] | 2924 | * changed. Negative errno if SCR registers are inaccessible. |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2925 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2926 | int sata_set_spd(struct ata_link *link) |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2927 | { |
| 2928 | u32 scontrol; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 2929 | int rc; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2930 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2931 | if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol))) |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 2932 | return rc; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2933 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2934 | if (!__sata_set_spd_needed(link, &scontrol)) |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2935 | return 0; |
| 2936 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2937 | if ((rc = sata_scr_write(link, SCR_CONTROL, scontrol))) |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 2938 | return rc; |
| 2939 | |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2940 | return 1; |
| 2941 | } |
| 2942 | |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2943 | /* |
| 2944 | * This mode timing computation functionality is ported over from |
| 2945 | * drivers/ide/ide-timing.h and was originally written by Vojtech Pavlik |
| 2946 | */ |
| 2947 | /* |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 2948 | * 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] | 2949 | * These were taken from ATA/ATAPI-6 standard, rev 0a, except |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 2950 | * for UDMA6, which is currently supported only by Maxtor drives. |
| 2951 | * |
| 2952 | * 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] | 2953 | */ |
| 2954 | |
| 2955 | static const struct ata_timing ata_timing[] = { |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 2956 | /* { XFER_PIO_SLOW, 120, 290, 240, 960, 290, 240, 960, 0 }, */ |
| 2957 | { XFER_PIO_0, 70, 290, 240, 600, 165, 150, 600, 0 }, |
| 2958 | { XFER_PIO_1, 50, 290, 93, 383, 125, 100, 383, 0 }, |
| 2959 | { XFER_PIO_2, 30, 290, 40, 330, 100, 90, 240, 0 }, |
| 2960 | { XFER_PIO_3, 30, 80, 70, 180, 80, 70, 180, 0 }, |
| 2961 | { XFER_PIO_4, 25, 70, 25, 120, 70, 25, 120, 0 }, |
| 2962 | { XFER_PIO_5, 15, 65, 25, 100, 65, 25, 100, 0 }, |
| 2963 | { XFER_PIO_6, 10, 55, 20, 80, 55, 20, 80, 0 }, |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2964 | |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 2965 | { XFER_SW_DMA_0, 120, 0, 0, 0, 480, 480, 960, 0 }, |
| 2966 | { XFER_SW_DMA_1, 90, 0, 0, 0, 240, 240, 480, 0 }, |
| 2967 | { XFER_SW_DMA_2, 60, 0, 0, 0, 120, 120, 240, 0 }, |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2968 | |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 2969 | { XFER_MW_DMA_0, 60, 0, 0, 0, 215, 215, 480, 0 }, |
| 2970 | { XFER_MW_DMA_1, 45, 0, 0, 0, 80, 50, 150, 0 }, |
| 2971 | { XFER_MW_DMA_2, 25, 0, 0, 0, 70, 25, 120, 0 }, |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 2972 | { XFER_MW_DMA_3, 25, 0, 0, 0, 65, 25, 100, 0 }, |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 2973 | { XFER_MW_DMA_4, 25, 0, 0, 0, 55, 20, 80, 0 }, |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2974 | |
| 2975 | /* { XFER_UDMA_SLOW, 0, 0, 0, 0, 0, 0, 0, 150 }, */ |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 2976 | { XFER_UDMA_0, 0, 0, 0, 0, 0, 0, 0, 120 }, |
| 2977 | { XFER_UDMA_1, 0, 0, 0, 0, 0, 0, 0, 80 }, |
| 2978 | { XFER_UDMA_2, 0, 0, 0, 0, 0, 0, 0, 60 }, |
| 2979 | { XFER_UDMA_3, 0, 0, 0, 0, 0, 0, 0, 45 }, |
| 2980 | { XFER_UDMA_4, 0, 0, 0, 0, 0, 0, 0, 30 }, |
| 2981 | { XFER_UDMA_5, 0, 0, 0, 0, 0, 0, 0, 20 }, |
| 2982 | { XFER_UDMA_6, 0, 0, 0, 0, 0, 0, 0, 15 }, |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2983 | |
| 2984 | { 0xFF } |
| 2985 | }; |
| 2986 | |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 2987 | #define ENOUGH(v, unit) (((v)-1)/(unit)+1) |
| 2988 | #define EZ(v, unit) ((v)?ENOUGH(v, unit):0) |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 2989 | |
| 2990 | static void ata_timing_quantize(const struct ata_timing *t, struct ata_timing *q, int T, int UT) |
| 2991 | { |
| 2992 | q->setup = EZ(t->setup * 1000, T); |
| 2993 | q->act8b = EZ(t->act8b * 1000, T); |
| 2994 | q->rec8b = EZ(t->rec8b * 1000, T); |
| 2995 | q->cyc8b = EZ(t->cyc8b * 1000, T); |
| 2996 | q->active = EZ(t->active * 1000, T); |
| 2997 | q->recover = EZ(t->recover * 1000, T); |
| 2998 | q->cycle = EZ(t->cycle * 1000, T); |
| 2999 | q->udma = EZ(t->udma * 1000, UT); |
| 3000 | } |
| 3001 | |
| 3002 | void ata_timing_merge(const struct ata_timing *a, const struct ata_timing *b, |
| 3003 | struct ata_timing *m, unsigned int what) |
| 3004 | { |
| 3005 | if (what & ATA_TIMING_SETUP ) m->setup = max(a->setup, b->setup); |
| 3006 | if (what & ATA_TIMING_ACT8B ) m->act8b = max(a->act8b, b->act8b); |
| 3007 | if (what & ATA_TIMING_REC8B ) m->rec8b = max(a->rec8b, b->rec8b); |
| 3008 | if (what & ATA_TIMING_CYC8B ) m->cyc8b = max(a->cyc8b, b->cyc8b); |
| 3009 | if (what & ATA_TIMING_ACTIVE ) m->active = max(a->active, b->active); |
| 3010 | if (what & ATA_TIMING_RECOVER) m->recover = max(a->recover, b->recover); |
| 3011 | if (what & ATA_TIMING_CYCLE ) m->cycle = max(a->cycle, b->cycle); |
| 3012 | if (what & ATA_TIMING_UDMA ) m->udma = max(a->udma, b->udma); |
| 3013 | } |
| 3014 | |
Tejun Heo | 6357357 | 2007-11-27 19:43:39 +0900 | [diff] [blame] | 3015 | const struct ata_timing *ata_timing_find_mode(u8 xfer_mode) |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3016 | { |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 3017 | const struct ata_timing *t = ata_timing; |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3018 | |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 3019 | while (xfer_mode > t->mode) |
| 3020 | t++; |
| 3021 | |
| 3022 | if (xfer_mode == t->mode) |
| 3023 | return t; |
| 3024 | return NULL; |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3025 | } |
| 3026 | |
| 3027 | int ata_timing_compute(struct ata_device *adev, unsigned short speed, |
| 3028 | struct ata_timing *t, int T, int UT) |
| 3029 | { |
| 3030 | const struct ata_timing *s; |
| 3031 | struct ata_timing p; |
| 3032 | |
| 3033 | /* |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 3034 | * Find the mode. |
Albert Lee | 75b1f2f | 2005-11-16 17:06:18 +0800 | [diff] [blame] | 3035 | */ |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3036 | |
| 3037 | if (!(s = ata_timing_find_mode(speed))) |
| 3038 | return -EINVAL; |
| 3039 | |
Albert Lee | 75b1f2f | 2005-11-16 17:06:18 +0800 | [diff] [blame] | 3040 | memcpy(t, s, sizeof(*s)); |
| 3041 | |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3042 | /* |
| 3043 | * If the drive is an EIDE drive, it can tell us it needs extended |
| 3044 | * PIO/MW_DMA cycle timing. |
| 3045 | */ |
| 3046 | |
| 3047 | if (adev->id[ATA_ID_FIELD_VALID] & 2) { /* EIDE drive */ |
| 3048 | memset(&p, 0, sizeof(p)); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3049 | if (speed >= XFER_PIO_0 && speed <= XFER_SW_DMA_0) { |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3050 | if (speed <= XFER_PIO_2) p.cycle = p.cyc8b = adev->id[ATA_ID_EIDE_PIO]; |
| 3051 | else p.cycle = p.cyc8b = adev->id[ATA_ID_EIDE_PIO_IORDY]; |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3052 | } else if (speed >= XFER_MW_DMA_0 && speed <= XFER_MW_DMA_2) { |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3053 | p.cycle = adev->id[ATA_ID_EIDE_DMA_MIN]; |
| 3054 | } |
| 3055 | ata_timing_merge(&p, t, t, ATA_TIMING_CYCLE | ATA_TIMING_CYC8B); |
| 3056 | } |
| 3057 | |
| 3058 | /* |
| 3059 | * Convert the timing to bus clock counts. |
| 3060 | */ |
| 3061 | |
Albert Lee | 75b1f2f | 2005-11-16 17:06:18 +0800 | [diff] [blame] | 3062 | ata_timing_quantize(t, t, T, UT); |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3063 | |
| 3064 | /* |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 3065 | * Even in DMA/UDMA modes we still use PIO access for IDENTIFY, |
| 3066 | * S.M.A.R.T * and some other commands. We have to ensure that the |
| 3067 | * DMA cycle timing is slower/equal than the fastest PIO timing. |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3068 | */ |
| 3069 | |
Alan | fd3367af | 2006-12-07 12:41:18 +0000 | [diff] [blame] | 3070 | if (speed > XFER_PIO_6) { |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3071 | ata_timing_compute(adev, adev->pio_mode, &p, T, UT); |
| 3072 | ata_timing_merge(&p, t, t, ATA_TIMING_ALL); |
| 3073 | } |
| 3074 | |
| 3075 | /* |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 3076 | * Lengthen active & recovery time so that cycle time is correct. |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3077 | */ |
| 3078 | |
| 3079 | if (t->act8b + t->rec8b < t->cyc8b) { |
| 3080 | t->act8b += (t->cyc8b - (t->act8b + t->rec8b)) / 2; |
| 3081 | t->rec8b = t->cyc8b - t->act8b; |
| 3082 | } |
| 3083 | |
| 3084 | if (t->active + t->recover < t->cycle) { |
| 3085 | t->active += (t->cycle - (t->active + t->recover)) / 2; |
| 3086 | t->recover = t->cycle - t->active; |
| 3087 | } |
Jeff Garzik | a617c09 | 2007-05-21 20:14:23 -0400 | [diff] [blame] | 3088 | |
Alan Cox | 4f701d1 | 2007-04-23 11:55:36 +0100 | [diff] [blame] | 3089 | /* In a few cases quantisation may produce enough errors to |
| 3090 | leave t->cycle too low for the sum of active and recovery |
| 3091 | if so we must correct this */ |
| 3092 | if (t->active + t->recover > t->cycle) |
| 3093 | t->cycle = t->active + t->recover; |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3094 | |
| 3095 | return 0; |
| 3096 | } |
| 3097 | |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3098 | /** |
Tejun Heo | a0f79b9 | 2007-12-18 16:33:05 +0900 | [diff] [blame] | 3099 | * ata_timing_cycle2mode - find xfer mode for the specified cycle duration |
| 3100 | * @xfer_shift: ATA_SHIFT_* value for transfer type to examine. |
| 3101 | * @cycle: cycle duration in ns |
| 3102 | * |
| 3103 | * Return matching xfer mode for @cycle. The returned mode is of |
| 3104 | * the transfer type specified by @xfer_shift. If @cycle is too |
| 3105 | * slow for @xfer_shift, 0xff is returned. If @cycle is faster |
| 3106 | * than the fastest known mode, the fasted mode is returned. |
| 3107 | * |
| 3108 | * LOCKING: |
| 3109 | * None. |
| 3110 | * |
| 3111 | * RETURNS: |
| 3112 | * Matching xfer_mode, 0xff if no match found. |
| 3113 | */ |
| 3114 | u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle) |
| 3115 | { |
| 3116 | u8 base_mode = 0xff, last_mode = 0xff; |
| 3117 | const struct ata_xfer_ent *ent; |
| 3118 | const struct ata_timing *t; |
| 3119 | |
| 3120 | for (ent = ata_xfer_tbl; ent->shift >= 0; ent++) |
| 3121 | if (ent->shift == xfer_shift) |
| 3122 | base_mode = ent->base; |
| 3123 | |
| 3124 | for (t = ata_timing_find_mode(base_mode); |
| 3125 | t && ata_xfer_mode2shift(t->mode) == xfer_shift; t++) { |
| 3126 | unsigned short this_cycle; |
| 3127 | |
| 3128 | switch (xfer_shift) { |
| 3129 | case ATA_SHIFT_PIO: |
| 3130 | case ATA_SHIFT_MWDMA: |
| 3131 | this_cycle = t->cycle; |
| 3132 | break; |
| 3133 | case ATA_SHIFT_UDMA: |
| 3134 | this_cycle = t->udma; |
| 3135 | break; |
| 3136 | default: |
| 3137 | return 0xff; |
| 3138 | } |
| 3139 | |
| 3140 | if (cycle > this_cycle) |
| 3141 | break; |
| 3142 | |
| 3143 | last_mode = t->mode; |
| 3144 | } |
| 3145 | |
| 3146 | return last_mode; |
| 3147 | } |
| 3148 | |
| 3149 | /** |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3150 | * ata_down_xfermask_limit - adjust dev xfer masks downward |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3151 | * @dev: Device to adjust xfer masks |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3152 | * @sel: ATA_DNXFER_* selector |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3153 | * |
| 3154 | * Adjust xfer masks of @dev downward. Note that this function |
| 3155 | * does not apply the change. Invoking ata_set_mode() afterwards |
| 3156 | * will apply the limit. |
| 3157 | * |
| 3158 | * LOCKING: |
| 3159 | * Inherited from caller. |
| 3160 | * |
| 3161 | * RETURNS: |
| 3162 | * 0 on success, negative errno on failure |
| 3163 | */ |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3164 | int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel) |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3165 | { |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3166 | char buf[32]; |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 3167 | unsigned long orig_mask, xfer_mask; |
| 3168 | unsigned long pio_mask, mwdma_mask, udma_mask; |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3169 | int quiet, highbit; |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3170 | |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3171 | quiet = !!(sel & ATA_DNXFER_QUIET); |
| 3172 | sel &= ~ATA_DNXFER_QUIET; |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3173 | |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3174 | xfer_mask = orig_mask = ata_pack_xfermask(dev->pio_mask, |
| 3175 | dev->mwdma_mask, |
| 3176 | dev->udma_mask); |
| 3177 | ata_unpack_xfermask(xfer_mask, &pio_mask, &mwdma_mask, &udma_mask); |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3178 | |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3179 | switch (sel) { |
| 3180 | case ATA_DNXFER_PIO: |
| 3181 | highbit = fls(pio_mask) - 1; |
| 3182 | pio_mask &= ~(1 << highbit); |
| 3183 | break; |
| 3184 | |
| 3185 | case ATA_DNXFER_DMA: |
| 3186 | if (udma_mask) { |
| 3187 | highbit = fls(udma_mask) - 1; |
| 3188 | udma_mask &= ~(1 << highbit); |
| 3189 | if (!udma_mask) |
| 3190 | return -ENOENT; |
| 3191 | } else if (mwdma_mask) { |
| 3192 | highbit = fls(mwdma_mask) - 1; |
| 3193 | mwdma_mask &= ~(1 << highbit); |
| 3194 | if (!mwdma_mask) |
| 3195 | return -ENOENT; |
| 3196 | } |
| 3197 | break; |
| 3198 | |
| 3199 | case ATA_DNXFER_40C: |
| 3200 | udma_mask &= ATA_UDMA_MASK_40C; |
| 3201 | break; |
| 3202 | |
| 3203 | case ATA_DNXFER_FORCE_PIO0: |
| 3204 | pio_mask &= 1; |
| 3205 | case ATA_DNXFER_FORCE_PIO: |
| 3206 | mwdma_mask = 0; |
| 3207 | udma_mask = 0; |
| 3208 | break; |
| 3209 | |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3210 | default: |
| 3211 | BUG(); |
| 3212 | } |
| 3213 | |
| 3214 | xfer_mask &= ata_pack_xfermask(pio_mask, mwdma_mask, udma_mask); |
| 3215 | |
| 3216 | if (!(xfer_mask & ATA_MASK_PIO) || xfer_mask == orig_mask) |
| 3217 | return -ENOENT; |
| 3218 | |
| 3219 | if (!quiet) { |
| 3220 | if (xfer_mask & (ATA_MASK_MWDMA | ATA_MASK_UDMA)) |
| 3221 | snprintf(buf, sizeof(buf), "%s:%s", |
| 3222 | ata_mode_string(xfer_mask), |
| 3223 | ata_mode_string(xfer_mask & ATA_MASK_PIO)); |
| 3224 | else |
| 3225 | snprintf(buf, sizeof(buf), "%s", |
| 3226 | ata_mode_string(xfer_mask)); |
| 3227 | |
| 3228 | ata_dev_printk(dev, KERN_WARNING, |
| 3229 | "limiting speed to %s\n", buf); |
| 3230 | } |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3231 | |
| 3232 | ata_unpack_xfermask(xfer_mask, &dev->pio_mask, &dev->mwdma_mask, |
| 3233 | &dev->udma_mask); |
| 3234 | |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3235 | return 0; |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3236 | } |
| 3237 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 3238 | static int ata_dev_set_mode(struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3239 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 3240 | struct ata_eh_context *ehc = &dev->link->eh_context; |
Tejun Heo | 4055dee | 2008-02-07 10:34:08 +0900 | [diff] [blame] | 3241 | const char *dev_err_whine = ""; |
| 3242 | int ign_dev_err = 0; |
Tejun Heo | 83206a2 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 3243 | unsigned int err_mask; |
| 3244 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3245 | |
Tejun Heo | e838460 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 3246 | dev->flags &= ~ATA_DFLAG_PIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3247 | if (dev->xfer_shift == ATA_SHIFT_PIO) |
| 3248 | dev->flags |= ATA_DFLAG_PIO; |
| 3249 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 3250 | err_mask = ata_dev_set_xfermode(dev); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3251 | |
Tejun Heo | 4055dee | 2008-02-07 10:34:08 +0900 | [diff] [blame] | 3252 | if (err_mask & ~AC_ERR_DEV) |
| 3253 | goto fail; |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3254 | |
Tejun Heo | 4055dee | 2008-02-07 10:34:08 +0900 | [diff] [blame] | 3255 | /* revalidate */ |
Tejun Heo | baa1e78 | 2006-11-01 18:39:27 +0900 | [diff] [blame] | 3256 | ehc->i.flags |= ATA_EHI_POST_SETMODE; |
Tejun Heo | 422c9da | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 3257 | rc = ata_dev_revalidate(dev, ATA_DEV_UNKNOWN, 0); |
Tejun Heo | baa1e78 | 2006-11-01 18:39:27 +0900 | [diff] [blame] | 3258 | ehc->i.flags &= ~ATA_EHI_POST_SETMODE; |
Tejun Heo | 5eb45c0 | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 3259 | if (rc) |
Tejun Heo | 83206a2 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 3260 | return rc; |
Tejun Heo | 48a8a14 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3261 | |
Alan Cox | b93fda1 | 2008-04-08 16:36:44 +0100 | [diff] [blame] | 3262 | if (dev->xfer_shift == ATA_SHIFT_PIO) { |
| 3263 | /* Old CFA may refuse this command, which is just fine */ |
| 3264 | if (ata_id_is_cfa(dev->id)) |
| 3265 | ign_dev_err = 1; |
| 3266 | /* Catch several broken garbage emulations plus some pre |
| 3267 | ATA devices */ |
| 3268 | if (ata_id_major_version(dev->id) == 0 && |
| 3269 | dev->pio_mode <= XFER_PIO_2) |
| 3270 | ign_dev_err = 1; |
| 3271 | /* Some very old devices and some bad newer ones fail |
| 3272 | any kind of SET_XFERMODE request but support PIO0-2 |
| 3273 | timings and no IORDY */ |
| 3274 | if (!ata_id_has_iordy(dev->id) && dev->pio_mode <= XFER_PIO_2) |
| 3275 | ign_dev_err = 1; |
| 3276 | } |
Tejun Heo | 4055dee | 2008-02-07 10:34:08 +0900 | [diff] [blame] | 3277 | /* Early MWDMA devices do DMA but don't allow DMA mode setting. |
| 3278 | Don't fail an MWDMA0 set IFF the device indicates it is in MWDMA0 */ |
| 3279 | if (dev->xfer_shift == ATA_SHIFT_MWDMA && |
| 3280 | dev->dma_mode == XFER_MW_DMA_0 && |
| 3281 | (dev->id[63] >> 8) & 1) |
| 3282 | ign_dev_err = 1; |
| 3283 | |
| 3284 | /* if the device is actually configured correctly, ignore dev err */ |
| 3285 | if (dev->xfer_mode == ata_xfer_mask2mode(ata_id_xfermask(dev->id))) |
| 3286 | ign_dev_err = 1; |
| 3287 | |
| 3288 | if (err_mask & AC_ERR_DEV) { |
| 3289 | if (!ign_dev_err) |
| 3290 | goto fail; |
| 3291 | else |
| 3292 | dev_err_whine = " (device error ignored)"; |
| 3293 | } |
| 3294 | |
Tejun Heo | 23e71c3 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 3295 | DPRINTK("xfer_shift=%u, xfer_mode=0x%x\n", |
| 3296 | dev->xfer_shift, (int)dev->xfer_mode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3297 | |
Tejun Heo | 4055dee | 2008-02-07 10:34:08 +0900 | [diff] [blame] | 3298 | ata_dev_printk(dev, KERN_INFO, "configured for %s%s\n", |
| 3299 | ata_mode_string(ata_xfer_mode2mask(dev->xfer_mode)), |
| 3300 | dev_err_whine); |
| 3301 | |
Tejun Heo | 83206a2 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 3302 | return 0; |
Tejun Heo | 4055dee | 2008-02-07 10:34:08 +0900 | [diff] [blame] | 3303 | |
| 3304 | fail: |
| 3305 | ata_dev_printk(dev, KERN_ERR, "failed to set xfermode " |
| 3306 | "(err_mask=0x%x)\n", err_mask); |
| 3307 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3308 | } |
| 3309 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3310 | /** |
Alan | 0435182 | 2007-03-06 02:37:52 -0800 | [diff] [blame] | 3311 | * ata_do_set_mode - Program timings and issue SET FEATURES - XFER |
Tejun Heo | 0260731 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3312 | * @link: link on which timings will be programmed |
Joe Perches | 1967b7f | 2008-02-03 17:08:11 +0200 | [diff] [blame] | 3313 | * @r_failed_dev: out parameter for failed device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3314 | * |
Alan | 0435182 | 2007-03-06 02:37:52 -0800 | [diff] [blame] | 3315 | * Standard implementation of the function used to tune and set |
| 3316 | * ATA device disk transfer mode (PIO3, UDMA6, etc.). If |
| 3317 | * ata_dev_set_mode() fails, pointer to the failing device is |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3318 | * returned in @r_failed_dev. |
Jeff Garzik | 780a87f | 2005-05-30 15:41:05 -0400 | [diff] [blame] | 3319 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3320 | * LOCKING: |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 3321 | * PCI/etc. bus probe sem. |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3322 | * |
| 3323 | * RETURNS: |
| 3324 | * 0 on success, negative errno otherwise |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3325 | */ |
Alan | 0435182 | 2007-03-06 02:37:52 -0800 | [diff] [blame] | 3326 | |
Tejun Heo | 0260731 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3327 | 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] | 3328 | { |
Tejun Heo | 0260731 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3329 | struct ata_port *ap = link->ap; |
Tejun Heo | e8e0619 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3330 | struct ata_device *dev; |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3331 | int rc = 0, used_dma = 0, found = 0; |
Tejun Heo | 3adcebb | 2006-05-15 20:57:37 +0900 | [diff] [blame] | 3332 | |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 3333 | /* step 1: calculate xfer_mask */ |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3334 | ata_link_for_each_dev(dev, link) { |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 3335 | unsigned long pio_mask, dma_mask; |
Alan Cox | b3a7060 | 2007-10-02 12:38:26 -0400 | [diff] [blame] | 3336 | unsigned int mode_mask; |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 3337 | |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3338 | if (!ata_dev_enabled(dev)) |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 3339 | continue; |
| 3340 | |
Alan Cox | b3a7060 | 2007-10-02 12:38:26 -0400 | [diff] [blame] | 3341 | mode_mask = ATA_DMA_MASK_ATA; |
| 3342 | if (dev->class == ATA_DEV_ATAPI) |
| 3343 | mode_mask = ATA_DMA_MASK_ATAPI; |
| 3344 | else if (ata_id_is_cfa(dev->id)) |
| 3345 | mode_mask = ATA_DMA_MASK_CFA; |
| 3346 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 3347 | ata_dev_xfermask(dev); |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 3348 | ata_force_xfermask(dev); |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 3349 | |
Tejun Heo | acf356b | 2006-03-24 14:07:50 +0900 | [diff] [blame] | 3350 | pio_mask = ata_pack_xfermask(dev->pio_mask, 0, 0); |
| 3351 | dma_mask = ata_pack_xfermask(0, dev->mwdma_mask, dev->udma_mask); |
Alan Cox | b3a7060 | 2007-10-02 12:38:26 -0400 | [diff] [blame] | 3352 | |
| 3353 | if (libata_dma_mask & mode_mask) |
| 3354 | dma_mask = ata_pack_xfermask(0, dev->mwdma_mask, dev->udma_mask); |
| 3355 | else |
| 3356 | dma_mask = 0; |
| 3357 | |
Tejun Heo | acf356b | 2006-03-24 14:07:50 +0900 | [diff] [blame] | 3358 | dev->pio_mode = ata_xfer_mask2mode(pio_mask); |
| 3359 | dev->dma_mode = ata_xfer_mask2mode(dma_mask); |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 3360 | |
Tejun Heo | 4f65977 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3361 | found = 1; |
Alan Cox | b15b3eb | 2008-08-01 09:18:34 +0100 | [diff] [blame] | 3362 | if (ata_dma_enabled(dev)) |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 3363 | used_dma = 1; |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 3364 | } |
Tejun Heo | 4f65977 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3365 | if (!found) |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3366 | goto out; |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 3367 | |
| 3368 | /* step 2: always set host PIO timings */ |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3369 | ata_link_for_each_dev(dev, link) { |
Tejun Heo | e8e0619 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3370 | if (!ata_dev_enabled(dev)) |
| 3371 | continue; |
| 3372 | |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 3373 | if (dev->pio_mode == 0xff) { |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 3374 | ata_dev_printk(dev, KERN_WARNING, "no PIO support\n"); |
Tejun Heo | e8e0619 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3375 | rc = -EINVAL; |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3376 | goto out; |
Tejun Heo | e8e0619 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3377 | } |
| 3378 | |
| 3379 | dev->xfer_mode = dev->pio_mode; |
| 3380 | dev->xfer_shift = ATA_SHIFT_PIO; |
| 3381 | if (ap->ops->set_piomode) |
| 3382 | ap->ops->set_piomode(ap, dev); |
| 3383 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3384 | |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 3385 | /* step 3: set host DMA timings */ |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3386 | ata_link_for_each_dev(dev, link) { |
Alan Cox | b15b3eb | 2008-08-01 09:18:34 +0100 | [diff] [blame] | 3387 | if (!ata_dev_enabled(dev) || !ata_dma_enabled(dev)) |
Tejun Heo | e8e0619 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3388 | continue; |
| 3389 | |
| 3390 | dev->xfer_mode = dev->dma_mode; |
| 3391 | dev->xfer_shift = ata_xfer_mode2shift(dev->dma_mode); |
| 3392 | if (ap->ops->set_dmamode) |
| 3393 | ap->ops->set_dmamode(ap, dev); |
| 3394 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3395 | |
| 3396 | /* step 4: update devices' xfer mode */ |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3397 | ata_link_for_each_dev(dev, link) { |
Alan | 18d90de | 2007-01-24 11:42:38 +0000 | [diff] [blame] | 3398 | /* don't update suspended devices' xfer mode */ |
Tejun Heo | 9666f40 | 2007-05-04 21:27:47 +0200 | [diff] [blame] | 3399 | if (!ata_dev_enabled(dev)) |
Tejun Heo | 83206a2 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 3400 | continue; |
| 3401 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 3402 | rc = ata_dev_set_mode(dev); |
Tejun Heo | 5bbc53f | 2006-04-01 01:38:17 +0900 | [diff] [blame] | 3403 | if (rc) |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3404 | goto out; |
Tejun Heo | 83206a2 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 3405 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3406 | |
Tejun Heo | e8e0619 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3407 | /* Record simplex status. If we selected DMA then the other |
| 3408 | * host channels are not permitted to do so. |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 3409 | */ |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3410 | if (used_dma && (ap->host->flags & ATA_HOST_SIMPLEX)) |
Alan | 032af1c | 2007-03-01 17:36:46 +0000 | [diff] [blame] | 3411 | ap->host->simplex_claimed = ap; |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 3412 | |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3413 | out: |
| 3414 | if (rc) |
| 3415 | *r_failed_dev = dev; |
| 3416 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3417 | } |
| 3418 | |
| 3419 | /** |
Tejun Heo | aa2731a | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3420 | * ata_wait_ready - wait for link to become ready |
| 3421 | * @link: link to be waited on |
| 3422 | * @deadline: deadline jiffies for the operation |
| 3423 | * @check_ready: callback to check link readiness |
| 3424 | * |
| 3425 | * Wait for @link to become ready. @check_ready should return |
| 3426 | * positive number if @link is ready, 0 if it isn't, -ENODEV if |
| 3427 | * link doesn't seem to be occupied, other errno for other error |
| 3428 | * conditions. |
| 3429 | * |
| 3430 | * Transient -ENODEV conditions are allowed for |
| 3431 | * ATA_TMOUT_FF_WAIT. |
| 3432 | * |
| 3433 | * LOCKING: |
| 3434 | * EH context. |
| 3435 | * |
| 3436 | * RETURNS: |
| 3437 | * 0 if @linke is ready before @deadline; otherwise, -errno. |
| 3438 | */ |
| 3439 | int ata_wait_ready(struct ata_link *link, unsigned long deadline, |
| 3440 | int (*check_ready)(struct ata_link *link)) |
| 3441 | { |
| 3442 | unsigned long start = jiffies; |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 3443 | unsigned long nodev_deadline = ata_deadline(start, ATA_TMOUT_FF_WAIT); |
Tejun Heo | aa2731a | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3444 | int warned = 0; |
| 3445 | |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 3446 | /* Slave readiness can't be tested separately from master. On |
| 3447 | * M/S emulation configuration, this function should be called |
| 3448 | * only on the master and it will handle both master and slave. |
| 3449 | */ |
| 3450 | WARN_ON(link == link->ap->slave_link); |
| 3451 | |
Tejun Heo | aa2731a | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3452 | if (time_after(nodev_deadline, deadline)) |
| 3453 | nodev_deadline = deadline; |
| 3454 | |
| 3455 | while (1) { |
| 3456 | unsigned long now = jiffies; |
| 3457 | int ready, tmp; |
| 3458 | |
| 3459 | ready = tmp = check_ready(link); |
| 3460 | if (ready > 0) |
| 3461 | return 0; |
| 3462 | |
| 3463 | /* -ENODEV could be transient. Ignore -ENODEV if link |
| 3464 | * is online. Also, some SATA devices take a long |
| 3465 | * time to clear 0xff after reset. For example, |
| 3466 | * HHD424020F7SV00 iVDR needs >= 800ms while Quantum |
| 3467 | * GoVault needs even more than that. Wait for |
| 3468 | * ATA_TMOUT_FF_WAIT on -ENODEV if link isn't offline. |
| 3469 | * |
| 3470 | * Note that some PATA controllers (pata_ali) explode |
| 3471 | * if status register is read more than once when |
| 3472 | * there's no device attached. |
| 3473 | */ |
| 3474 | if (ready == -ENODEV) { |
| 3475 | if (ata_link_online(link)) |
| 3476 | ready = 0; |
| 3477 | else if ((link->ap->flags & ATA_FLAG_SATA) && |
| 3478 | !ata_link_offline(link) && |
| 3479 | time_before(now, nodev_deadline)) |
| 3480 | ready = 0; |
| 3481 | } |
| 3482 | |
| 3483 | if (ready) |
| 3484 | return ready; |
| 3485 | if (time_after(now, deadline)) |
| 3486 | return -EBUSY; |
| 3487 | |
| 3488 | if (!warned && time_after(now, start + 5 * HZ) && |
| 3489 | (deadline - now > 3 * HZ)) { |
| 3490 | ata_link_printk(link, KERN_WARNING, |
| 3491 | "link is slow to respond, please be patient " |
| 3492 | "(ready=%d)\n", tmp); |
| 3493 | warned = 1; |
| 3494 | } |
| 3495 | |
| 3496 | msleep(50); |
| 3497 | } |
| 3498 | } |
| 3499 | |
| 3500 | /** |
| 3501 | * ata_wait_after_reset - wait for link to become ready after reset |
| 3502 | * @link: link to be waited on |
| 3503 | * @deadline: deadline jiffies for the operation |
| 3504 | * @check_ready: callback to check link readiness |
| 3505 | * |
| 3506 | * Wait for @link to become ready after reset. |
| 3507 | * |
| 3508 | * LOCKING: |
| 3509 | * EH context. |
| 3510 | * |
| 3511 | * RETURNS: |
| 3512 | * 0 if @linke is ready before @deadline; otherwise, -errno. |
| 3513 | */ |
Harvey Harrison | 2b4221b | 2008-04-24 18:37:34 -0700 | [diff] [blame] | 3514 | int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, |
Tejun Heo | aa2731a | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3515 | int (*check_ready)(struct ata_link *link)) |
| 3516 | { |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 3517 | msleep(ATA_WAIT_AFTER_RESET); |
Tejun Heo | aa2731a | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3518 | |
| 3519 | return ata_wait_ready(link, deadline, check_ready); |
| 3520 | } |
| 3521 | |
| 3522 | /** |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3523 | * sata_link_debounce - debounce SATA phy status |
| 3524 | * @link: ATA link to debounce SATA phy status for |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3525 | * @params: timing parameters { interval, duratinon, timeout } in msec |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3526 | * @deadline: deadline jiffies for the operation |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3527 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3528 | * Make sure SStatus of @link reaches stable state, determined by |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3529 | * holding the same value where DET is not 1 for @duration polled |
| 3530 | * every @interval, before @timeout. Timeout constraints the |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3531 | * beginning of the stable state. Because DET gets stuck at 1 on |
| 3532 | * some controllers after hot unplugging, this functions waits |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3533 | * until timeout then returns 0 if DET is stable at 1. |
| 3534 | * |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3535 | * @timeout is further limited by @deadline. The sooner of the |
| 3536 | * two is used. |
| 3537 | * |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3538 | * LOCKING: |
| 3539 | * Kernel thread context (may sleep) |
| 3540 | * |
| 3541 | * RETURNS: |
| 3542 | * 0 on success, -errno on failure. |
| 3543 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3544 | int sata_link_debounce(struct ata_link *link, const unsigned long *params, |
| 3545 | unsigned long deadline) |
Tejun Heo | 7a7921e | 2006-02-02 18:20:00 +0900 | [diff] [blame] | 3546 | { |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 3547 | unsigned long interval = params[0]; |
| 3548 | unsigned long duration = params[1]; |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3549 | unsigned long last_jiffies, t; |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3550 | u32 last, cur; |
| 3551 | int rc; |
| 3552 | |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 3553 | t = ata_deadline(jiffies, params[2]); |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3554 | if (time_before(t, deadline)) |
| 3555 | deadline = t; |
| 3556 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3557 | if ((rc = sata_scr_read(link, SCR_STATUS, &cur))) |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3558 | return rc; |
| 3559 | cur &= 0xf; |
| 3560 | |
| 3561 | last = cur; |
| 3562 | last_jiffies = jiffies; |
| 3563 | |
| 3564 | while (1) { |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 3565 | msleep(interval); |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3566 | if ((rc = sata_scr_read(link, SCR_STATUS, &cur))) |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3567 | return rc; |
| 3568 | cur &= 0xf; |
| 3569 | |
| 3570 | /* DET stable? */ |
| 3571 | if (cur == last) { |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3572 | if (cur == 1 && time_before(jiffies, deadline)) |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3573 | continue; |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 3574 | if (time_after(jiffies, |
| 3575 | ata_deadline(last_jiffies, duration))) |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3576 | return 0; |
| 3577 | continue; |
| 3578 | } |
| 3579 | |
| 3580 | /* unstable, start over */ |
| 3581 | last = cur; |
| 3582 | last_jiffies = jiffies; |
| 3583 | |
Tejun Heo | f154515 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3584 | /* Check deadline. If debouncing failed, return |
| 3585 | * -EPIPE to tell upper layer to lower link speed. |
| 3586 | */ |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3587 | if (time_after(jiffies, deadline)) |
Tejun Heo | f154515 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3588 | return -EPIPE; |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3589 | } |
| 3590 | } |
| 3591 | |
| 3592 | /** |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3593 | * sata_link_resume - resume SATA link |
| 3594 | * @link: ATA link to resume SATA |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3595 | * @params: timing parameters { interval, duratinon, timeout } in msec |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3596 | * @deadline: deadline jiffies for the operation |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3597 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3598 | * Resume SATA phy @link and debounce it. |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3599 | * |
| 3600 | * LOCKING: |
| 3601 | * Kernel thread context (may sleep) |
| 3602 | * |
| 3603 | * RETURNS: |
| 3604 | * 0 on success, -errno on failure. |
| 3605 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3606 | int sata_link_resume(struct ata_link *link, const unsigned long *params, |
| 3607 | unsigned long deadline) |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3608 | { |
Tejun Heo | ac37198 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3609 | u32 scontrol, serror; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3610 | int rc; |
Tejun Heo | 7a7921e | 2006-02-02 18:20:00 +0900 | [diff] [blame] | 3611 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3612 | if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol))) |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3613 | return rc; |
| 3614 | |
Tejun Heo | 852ee16 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3615 | scontrol = (scontrol & 0x0f0) | 0x300; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3616 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3617 | if ((rc = sata_scr_write(link, SCR_CONTROL, scontrol))) |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3618 | return rc; |
Tejun Heo | 7a7921e | 2006-02-02 18:20:00 +0900 | [diff] [blame] | 3619 | |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3620 | /* Some PHYs react badly if SStatus is pounded immediately |
| 3621 | * after resuming. Delay 200ms before debouncing. |
| 3622 | */ |
| 3623 | msleep(200); |
Tejun Heo | 7a7921e | 2006-02-02 18:20:00 +0900 | [diff] [blame] | 3624 | |
Tejun Heo | ac37198 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3625 | if ((rc = sata_link_debounce(link, params, deadline))) |
| 3626 | return rc; |
| 3627 | |
Tejun Heo | f046519 | 2008-05-19 01:15:08 +0900 | [diff] [blame] | 3628 | /* clear SError, some PHYs require this even for SRST to work */ |
Tejun Heo | ac37198 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3629 | if (!(rc = sata_scr_read(link, SCR_ERROR, &serror))) |
| 3630 | rc = sata_scr_write(link, SCR_ERROR, serror); |
Tejun Heo | ac37198 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3631 | |
Tejun Heo | f046519 | 2008-05-19 01:15:08 +0900 | [diff] [blame] | 3632 | return rc != -EINVAL ? rc : 0; |
Tejun Heo | 7a7921e | 2006-02-02 18:20:00 +0900 | [diff] [blame] | 3633 | } |
| 3634 | |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3635 | /** |
Tejun Heo | 0aa1113 | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 3636 | * ata_std_prereset - prepare for reset |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3637 | * @link: ATA link to be reset |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3638 | * @deadline: deadline jiffies for the operation |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3639 | * |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3640 | * @link is about to be reset. Initialize it. Failure from |
Tejun Heo | b8cffc6 | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3641 | * prereset makes libata abort whole reset sequence and give up |
| 3642 | * that port, so prereset should be best-effort. It does its |
| 3643 | * best to prepare for reset sequence but if things go wrong, it |
| 3644 | * should just whine, not fail. |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3645 | * |
| 3646 | * LOCKING: |
| 3647 | * Kernel thread context (may sleep) |
| 3648 | * |
| 3649 | * RETURNS: |
| 3650 | * 0 on success, -errno otherwise. |
| 3651 | */ |
Tejun Heo | 0aa1113 | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 3652 | int ata_std_prereset(struct ata_link *link, unsigned long deadline) |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3653 | { |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3654 | struct ata_port *ap = link->ap; |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3655 | struct ata_eh_context *ehc = &link->eh_context; |
Tejun Heo | e9c8391 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 3656 | const unsigned long *timing = sata_ehc_deb_timing(ehc); |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3657 | int rc; |
| 3658 | |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3659 | /* if we're about to do hardreset, nothing more to do */ |
| 3660 | if (ehc->i.action & ATA_EH_HARDRESET) |
| 3661 | return 0; |
| 3662 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3663 | /* if SATA, resume link */ |
Tejun Heo | a16abc0 | 2007-05-21 18:33:47 +0200 | [diff] [blame] | 3664 | if (ap->flags & ATA_FLAG_SATA) { |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3665 | rc = sata_link_resume(link, timing, deadline); |
Tejun Heo | b8cffc6 | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3666 | /* whine about phy resume failure but proceed */ |
| 3667 | if (rc && rc != -EOPNOTSUPP) |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3668 | ata_link_printk(link, KERN_WARNING, "failed to resume " |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3669 | "link for reset (errno=%d)\n", rc); |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3670 | } |
| 3671 | |
Tejun Heo | 45db2f6 | 2008-04-08 01:46:56 +0900 | [diff] [blame] | 3672 | /* no point in trying softreset on offline link */ |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 3673 | if (ata_phys_link_offline(link)) |
Tejun Heo | 45db2f6 | 2008-04-08 01:46:56 +0900 | [diff] [blame] | 3674 | ehc->i.action &= ~ATA_EH_SOFTRESET; |
| 3675 | |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3676 | return 0; |
| 3677 | } |
| 3678 | |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3679 | /** |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3680 | * sata_link_hardreset - reset link via SATA phy reset |
| 3681 | * @link: link to reset |
Tejun Heo | b6103f6 | 2006-11-01 17:59:53 +0900 | [diff] [blame] | 3682 | * @timing: timing parameters { interval, duratinon, timeout } in msec |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3683 | * @deadline: deadline jiffies for the operation |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3684 | * @online: optional out parameter indicating link onlineness |
| 3685 | * @check_ready: optional callback to check link readiness |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3686 | * |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3687 | * SATA phy-reset @link using DET bits of SControl register. |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3688 | * After hardreset, link readiness is waited upon using |
| 3689 | * ata_wait_ready() if @check_ready is specified. LLDs are |
| 3690 | * allowed to not specify @check_ready and wait itself after this |
| 3691 | * function returns. Device classification is LLD's |
| 3692 | * responsibility. |
| 3693 | * |
| 3694 | * *@online is set to one iff reset succeeded and @link is online |
| 3695 | * after reset. |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3696 | * |
| 3697 | * LOCKING: |
| 3698 | * Kernel thread context (may sleep) |
| 3699 | * |
| 3700 | * RETURNS: |
| 3701 | * 0 on success, -errno otherwise. |
| 3702 | */ |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3703 | int sata_link_hardreset(struct ata_link *link, const unsigned long *timing, |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3704 | unsigned long deadline, |
| 3705 | bool *online, int (*check_ready)(struct ata_link *)) |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3706 | { |
Tejun Heo | 852ee16 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3707 | u32 scontrol; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3708 | int rc; |
Tejun Heo | 852ee16 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3709 | |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3710 | DPRINTK("ENTER\n"); |
| 3711 | |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3712 | if (online) |
| 3713 | *online = false; |
| 3714 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3715 | if (sata_set_spd_needed(link)) { |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 3716 | /* SATA spec says nothing about how to reconfigure |
| 3717 | * spd. To be on the safe side, turn off phy during |
| 3718 | * reconfiguration. This works for at least ICH7 AHCI |
| 3719 | * and Sil3124. |
| 3720 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3721 | if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol))) |
Tejun Heo | b6103f6 | 2006-11-01 17:59:53 +0900 | [diff] [blame] | 3722 | goto out; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3723 | |
Martin Hicks | a34b6fc | 2006-07-05 15:06:13 -0400 | [diff] [blame] | 3724 | scontrol = (scontrol & 0x0f0) | 0x304; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3725 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3726 | if ((rc = sata_scr_write(link, SCR_CONTROL, scontrol))) |
Tejun Heo | b6103f6 | 2006-11-01 17:59:53 +0900 | [diff] [blame] | 3727 | goto out; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 3728 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3729 | sata_set_spd(link); |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 3730 | } |
| 3731 | |
| 3732 | /* issue phy wake/reset */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3733 | if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol))) |
Tejun Heo | b6103f6 | 2006-11-01 17:59:53 +0900 | [diff] [blame] | 3734 | goto out; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3735 | |
Tejun Heo | 852ee16 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3736 | scontrol = (scontrol & 0x0f0) | 0x301; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3737 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3738 | if ((rc = sata_scr_write_flush(link, SCR_CONTROL, scontrol))) |
Tejun Heo | b6103f6 | 2006-11-01 17:59:53 +0900 | [diff] [blame] | 3739 | goto out; |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3740 | |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 3741 | /* 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] | 3742 | * 10.4.2 says at least 1 ms. |
| 3743 | */ |
| 3744 | msleep(1); |
| 3745 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3746 | /* bring link back */ |
| 3747 | rc = sata_link_resume(link, timing, deadline); |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3748 | if (rc) |
| 3749 | goto out; |
| 3750 | /* if link is offline nothing more to do */ |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 3751 | if (ata_phys_link_offline(link)) |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3752 | goto out; |
| 3753 | |
| 3754 | /* Link is online. From this point, -ENODEV too is an error. */ |
| 3755 | if (online) |
| 3756 | *online = true; |
| 3757 | |
Tejun Heo | 071f44b | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 3758 | if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) { |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3759 | /* If PMP is supported, we have to do follow-up SRST. |
| 3760 | * Some PMPs don't send D2H Reg FIS after hardreset if |
| 3761 | * the first port is empty. Wait only for |
| 3762 | * ATA_TMOUT_PMP_SRST_WAIT. |
| 3763 | */ |
| 3764 | if (check_ready) { |
| 3765 | unsigned long pmp_deadline; |
| 3766 | |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 3767 | pmp_deadline = ata_deadline(jiffies, |
| 3768 | ATA_TMOUT_PMP_SRST_WAIT); |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3769 | if (time_after(pmp_deadline, deadline)) |
| 3770 | pmp_deadline = deadline; |
| 3771 | ata_wait_ready(link, pmp_deadline, check_ready); |
| 3772 | } |
| 3773 | rc = -EAGAIN; |
| 3774 | goto out; |
| 3775 | } |
| 3776 | |
| 3777 | rc = 0; |
| 3778 | if (check_ready) |
| 3779 | rc = ata_wait_ready(link, deadline, check_ready); |
Tejun Heo | b6103f6 | 2006-11-01 17:59:53 +0900 | [diff] [blame] | 3780 | out: |
Tejun Heo | 0cbf071 | 2008-05-19 01:15:05 +0900 | [diff] [blame] | 3781 | if (rc && rc != -EAGAIN) { |
| 3782 | /* online is set iff link is online && reset succeeded */ |
| 3783 | if (online) |
| 3784 | *online = false; |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3785 | ata_link_printk(link, KERN_ERR, |
| 3786 | "COMRESET failed (errno=%d)\n", rc); |
Tejun Heo | 0cbf071 | 2008-05-19 01:15:05 +0900 | [diff] [blame] | 3787 | } |
Tejun Heo | b6103f6 | 2006-11-01 17:59:53 +0900 | [diff] [blame] | 3788 | DPRINTK("EXIT, rc=%d\n", rc); |
| 3789 | return rc; |
| 3790 | } |
| 3791 | |
| 3792 | /** |
Tejun Heo | 57c9efd | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3793 | * sata_std_hardreset - COMRESET w/o waiting or classification |
| 3794 | * @link: link to reset |
| 3795 | * @class: resulting class of attached device |
| 3796 | * @deadline: deadline jiffies for the operation |
| 3797 | * |
| 3798 | * Standard SATA COMRESET w/o waiting or classification. |
| 3799 | * |
| 3800 | * LOCKING: |
| 3801 | * Kernel thread context (may sleep) |
| 3802 | * |
| 3803 | * RETURNS: |
| 3804 | * 0 if link offline, -EAGAIN if link online, -errno on errors. |
| 3805 | */ |
| 3806 | int sata_std_hardreset(struct ata_link *link, unsigned int *class, |
| 3807 | unsigned long deadline) |
| 3808 | { |
| 3809 | const unsigned long *timing = sata_ehc_deb_timing(&link->eh_context); |
| 3810 | bool online; |
| 3811 | int rc; |
| 3812 | |
| 3813 | /* do hardreset */ |
| 3814 | rc = sata_link_hardreset(link, timing, deadline, &online, NULL); |
Tejun Heo | 57c9efd | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3815 | return online ? -EAGAIN : rc; |
| 3816 | } |
| 3817 | |
| 3818 | /** |
Tejun Heo | 203c75b | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 3819 | * ata_std_postreset - standard postreset callback |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3820 | * @link: the target ata_link |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3821 | * @classes: classes of attached devices |
| 3822 | * |
| 3823 | * This function is invoked after a successful reset. Note that |
| 3824 | * the device might have been reset more than once using |
| 3825 | * different reset methods before postreset is invoked. |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3826 | * |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3827 | * LOCKING: |
| 3828 | * Kernel thread context (may sleep) |
| 3829 | */ |
Tejun Heo | 203c75b | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 3830 | void ata_std_postreset(struct ata_link *link, unsigned int *classes) |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3831 | { |
Tejun Heo | f046519 | 2008-05-19 01:15:08 +0900 | [diff] [blame] | 3832 | u32 serror; |
| 3833 | |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3834 | DPRINTK("ENTER\n"); |
| 3835 | |
Tejun Heo | f046519 | 2008-05-19 01:15:08 +0900 | [diff] [blame] | 3836 | /* reset complete, clear SError */ |
| 3837 | if (!sata_scr_read(link, SCR_ERROR, &serror)) |
| 3838 | sata_scr_write(link, SCR_ERROR, serror); |
| 3839 | |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3840 | /* print link status */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3841 | sata_print_link_status(link); |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3842 | |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3843 | DPRINTK("EXIT\n"); |
| 3844 | } |
| 3845 | |
Tejun Heo | a62c0fc | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3846 | /** |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3847 | * ata_dev_same_device - Determine whether new ID matches configured device |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3848 | * @dev: device to compare against |
| 3849 | * @new_class: class of the new device |
| 3850 | * @new_id: IDENTIFY page of the new device |
| 3851 | * |
| 3852 | * Compare @new_class and @new_id against @dev and determine |
| 3853 | * whether @dev is the device indicated by @new_class and |
| 3854 | * @new_id. |
| 3855 | * |
| 3856 | * LOCKING: |
| 3857 | * None. |
| 3858 | * |
| 3859 | * RETURNS: |
| 3860 | * 1 if @dev matches @new_class and @new_id, 0 otherwise. |
| 3861 | */ |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 3862 | static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class, |
| 3863 | const u16 *new_id) |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3864 | { |
| 3865 | const u16 *old_id = dev->id; |
Tejun Heo | a0cf733 | 2007-01-02 20:18:49 +0900 | [diff] [blame] | 3866 | unsigned char model[2][ATA_ID_PROD_LEN + 1]; |
| 3867 | unsigned char serial[2][ATA_ID_SERNO_LEN + 1]; |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3868 | |
| 3869 | if (dev->class != new_class) { |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 3870 | ata_dev_printk(dev, KERN_INFO, "class mismatch %d != %d\n", |
| 3871 | dev->class, new_class); |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3872 | return 0; |
| 3873 | } |
| 3874 | |
Tejun Heo | a0cf733 | 2007-01-02 20:18:49 +0900 | [diff] [blame] | 3875 | ata_id_c_string(old_id, model[0], ATA_ID_PROD, sizeof(model[0])); |
| 3876 | ata_id_c_string(new_id, model[1], ATA_ID_PROD, sizeof(model[1])); |
| 3877 | ata_id_c_string(old_id, serial[0], ATA_ID_SERNO, sizeof(serial[0])); |
| 3878 | 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] | 3879 | |
| 3880 | if (strcmp(model[0], model[1])) { |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 3881 | ata_dev_printk(dev, KERN_INFO, "model number mismatch " |
| 3882 | "'%s' != '%s'\n", model[0], model[1]); |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3883 | return 0; |
| 3884 | } |
| 3885 | |
| 3886 | if (strcmp(serial[0], serial[1])) { |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 3887 | ata_dev_printk(dev, KERN_INFO, "serial number mismatch " |
| 3888 | "'%s' != '%s'\n", serial[0], serial[1]); |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3889 | return 0; |
| 3890 | } |
| 3891 | |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3892 | return 1; |
| 3893 | } |
| 3894 | |
| 3895 | /** |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3896 | * ata_dev_reread_id - Re-read IDENTIFY data |
Henrik Kretzschmar | 3fae450 | 2007-06-19 10:10:50 +0200 | [diff] [blame] | 3897 | * @dev: target ATA device |
Tejun Heo | bff0464 | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 3898 | * @readid_flags: read ID flags |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3899 | * |
| 3900 | * Re-read IDENTIFY page and make sure @dev is still attached to |
| 3901 | * the port. |
| 3902 | * |
| 3903 | * LOCKING: |
| 3904 | * Kernel thread context (may sleep) |
| 3905 | * |
| 3906 | * RETURNS: |
| 3907 | * 0 on success, negative errno otherwise |
| 3908 | */ |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3909 | 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] | 3910 | { |
Tejun Heo | 5eb45c0 | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 3911 | unsigned int class = dev->class; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 3912 | u16 *id = (void *)dev->link->ap->sector_buf; |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3913 | int rc; |
| 3914 | |
Tejun Heo | fe635c7 | 2006-05-15 20:57:35 +0900 | [diff] [blame] | 3915 | /* read ID data */ |
Tejun Heo | bff0464 | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 3916 | rc = ata_dev_read_id(dev, &class, readid_flags, id); |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3917 | if (rc) |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3918 | return rc; |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3919 | |
| 3920 | /* is the device still there? */ |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3921 | if (!ata_dev_same_device(dev, class, id)) |
| 3922 | return -ENODEV; |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3923 | |
Tejun Heo | fe635c7 | 2006-05-15 20:57:35 +0900 | [diff] [blame] | 3924 | memcpy(dev->id, id, sizeof(id[0]) * ATA_ID_WORDS); |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3925 | return 0; |
| 3926 | } |
| 3927 | |
| 3928 | /** |
| 3929 | * ata_dev_revalidate - Revalidate ATA device |
| 3930 | * @dev: device to revalidate |
Tejun Heo | 422c9da | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 3931 | * @new_class: new class code |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3932 | * @readid_flags: read ID flags |
| 3933 | * |
| 3934 | * Re-read IDENTIFY page, make sure @dev is still attached to the |
| 3935 | * port and reconfigure it according to the new IDENTIFY page. |
| 3936 | * |
| 3937 | * LOCKING: |
| 3938 | * Kernel thread context (may sleep) |
| 3939 | * |
| 3940 | * RETURNS: |
| 3941 | * 0 on success, negative errno otherwise |
| 3942 | */ |
Tejun Heo | 422c9da | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 3943 | int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class, |
| 3944 | unsigned int readid_flags) |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3945 | { |
Tejun Heo | 6ddcd3b | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3946 | u64 n_sectors = dev->n_sectors; |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3947 | int rc; |
| 3948 | |
| 3949 | if (!ata_dev_enabled(dev)) |
| 3950 | return -ENODEV; |
| 3951 | |
Tejun Heo | 422c9da | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 3952 | /* fail early if !ATA && !ATAPI to avoid issuing [P]IDENTIFY to PMP */ |
| 3953 | if (ata_class_enabled(new_class) && |
| 3954 | new_class != ATA_DEV_ATA && new_class != ATA_DEV_ATAPI) { |
| 3955 | ata_dev_printk(dev, KERN_INFO, "class mismatch %u != %u\n", |
| 3956 | dev->class, new_class); |
| 3957 | rc = -ENODEV; |
| 3958 | goto fail; |
| 3959 | } |
| 3960 | |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3961 | /* re-read ID */ |
| 3962 | rc = ata_dev_reread_id(dev, readid_flags); |
| 3963 | if (rc) |
| 3964 | goto fail; |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3965 | |
| 3966 | /* configure device according to the new ID */ |
Tejun Heo | efdaedc | 2006-11-01 18:38:52 +0900 | [diff] [blame] | 3967 | rc = ata_dev_configure(dev); |
Tejun Heo | 6ddcd3b | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3968 | if (rc) |
| 3969 | goto fail; |
| 3970 | |
| 3971 | /* verify n_sectors hasn't changed */ |
Tejun Heo | b54eebd | 2007-08-17 18:46:51 +0900 | [diff] [blame] | 3972 | if (dev->class == ATA_DEV_ATA && n_sectors && |
| 3973 | dev->n_sectors != n_sectors) { |
Tejun Heo | 6ddcd3b | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3974 | ata_dev_printk(dev, KERN_INFO, "n_sectors mismatch " |
| 3975 | "%llu != %llu\n", |
| 3976 | (unsigned long long)n_sectors, |
| 3977 | (unsigned long long)dev->n_sectors); |
Tejun Heo | 8270bec | 2007-08-16 03:02:22 +0900 | [diff] [blame] | 3978 | |
| 3979 | /* restore original n_sectors */ |
| 3980 | dev->n_sectors = n_sectors; |
| 3981 | |
Tejun Heo | 6ddcd3b | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 3982 | rc = -ENODEV; |
| 3983 | goto fail; |
| 3984 | } |
| 3985 | |
| 3986 | return 0; |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3987 | |
| 3988 | fail: |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 3989 | ata_dev_printk(dev, KERN_ERR, "revalidation failed (errno=%d)\n", rc); |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3990 | return rc; |
| 3991 | } |
| 3992 | |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 3993 | struct ata_blacklist_entry { |
| 3994 | const char *model_num; |
| 3995 | const char *model_rev; |
| 3996 | unsigned long horkage; |
| 3997 | }; |
| 3998 | |
| 3999 | static const struct ata_blacklist_entry ata_device_blacklist [] = { |
| 4000 | /* Devices with DMA related problems under Linux */ |
| 4001 | { "WDC AC11000H", NULL, ATA_HORKAGE_NODMA }, |
| 4002 | { "WDC AC22100H", NULL, ATA_HORKAGE_NODMA }, |
| 4003 | { "WDC AC32500H", NULL, ATA_HORKAGE_NODMA }, |
| 4004 | { "WDC AC33100H", NULL, ATA_HORKAGE_NODMA }, |
| 4005 | { "WDC AC31600H", NULL, ATA_HORKAGE_NODMA }, |
| 4006 | { "WDC AC32100H", "24.09P07", ATA_HORKAGE_NODMA }, |
| 4007 | { "WDC AC23200L", "21.10N21", ATA_HORKAGE_NODMA }, |
| 4008 | { "Compaq CRD-8241B", NULL, ATA_HORKAGE_NODMA }, |
| 4009 | { "CRD-8400B", NULL, ATA_HORKAGE_NODMA }, |
| 4010 | { "CRD-8480B", NULL, ATA_HORKAGE_NODMA }, |
| 4011 | { "CRD-8482B", NULL, ATA_HORKAGE_NODMA }, |
| 4012 | { "CRD-84", NULL, ATA_HORKAGE_NODMA }, |
| 4013 | { "SanDisk SDP3B", NULL, ATA_HORKAGE_NODMA }, |
| 4014 | { "SanDisk SDP3B-64", NULL, ATA_HORKAGE_NODMA }, |
| 4015 | { "SANYO CD-ROM CRD", NULL, ATA_HORKAGE_NODMA }, |
| 4016 | { "HITACHI CDR-8", NULL, ATA_HORKAGE_NODMA }, |
| 4017 | { "HITACHI CDR-8335", NULL, ATA_HORKAGE_NODMA }, |
| 4018 | { "HITACHI CDR-8435", NULL, ATA_HORKAGE_NODMA }, |
| 4019 | { "Toshiba CD-ROM XM-6202B", NULL, ATA_HORKAGE_NODMA }, |
| 4020 | { "TOSHIBA CD-ROM XM-1702BC", NULL, ATA_HORKAGE_NODMA }, |
| 4021 | { "CD-532E-A", NULL, ATA_HORKAGE_NODMA }, |
| 4022 | { "E-IDE CD-ROM CR-840",NULL, ATA_HORKAGE_NODMA }, |
| 4023 | { "CD-ROM Drive/F5A", NULL, ATA_HORKAGE_NODMA }, |
| 4024 | { "WPI CDD-820", NULL, ATA_HORKAGE_NODMA }, |
| 4025 | { "SAMSUNG CD-ROM SC-148C", NULL, ATA_HORKAGE_NODMA }, |
| 4026 | { "SAMSUNG CD-ROM SC", NULL, ATA_HORKAGE_NODMA }, |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4027 | { "ATAPI CD-ROM DRIVE 40X MAXIMUM",NULL,ATA_HORKAGE_NODMA }, |
| 4028 | { "_NEC DV5800A", NULL, ATA_HORKAGE_NODMA }, |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 4029 | { "SAMSUNG CD-ROM SN-124", "N001", ATA_HORKAGE_NODMA }, |
Dave Jones | 39f1988 | 2007-05-21 14:31:03 -0400 | [diff] [blame] | 4030 | { "Seagate STT20000A", NULL, ATA_HORKAGE_NODMA }, |
Tejun Heo | 3af9a77 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 4031 | /* Odd clown on sil3726/4726 PMPs */ |
Tejun Heo | 50af2fa | 2008-05-19 01:15:14 +0900 | [diff] [blame] | 4032 | { "Config Disk", NULL, ATA_HORKAGE_DISABLE }, |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4033 | |
Albert Lee | 18d6e9d | 2007-04-02 11:34:15 +0800 | [diff] [blame] | 4034 | /* Weird ATAPI devices */ |
Tejun Heo | 40a1d53 | 2007-06-27 02:49:38 +0900 | [diff] [blame] | 4035 | { "TORiSAN DVD-ROM DRD-N216", NULL, ATA_HORKAGE_MAX_SEC_128 }, |
Tejun Heo | 6a87e42 | 2008-11-03 19:01:09 +0900 | [diff] [blame] | 4036 | { "QUANTUM DAT DAT72-000", NULL, ATA_HORKAGE_ATAPI_MOD16_DMA }, |
Albert Lee | 18d6e9d | 2007-04-02 11:34:15 +0800 | [diff] [blame] | 4037 | |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4038 | /* Devices we expect to fail diagnostics */ |
| 4039 | |
| 4040 | /* Devices where NCQ should be avoided */ |
| 4041 | /* NCQ is slow */ |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 4042 | { "WDC WD740ADFD-00", NULL, ATA_HORKAGE_NONCQ }, |
Tejun Heo | 459ad68 | 2007-12-07 12:46:23 +0900 | [diff] [blame] | 4043 | { "WDC WD740ADFD-00NLR1", NULL, ATA_HORKAGE_NONCQ, }, |
Tejun Heo | 09125ea | 2007-02-28 15:21:23 +0900 | [diff] [blame] | 4044 | /* http://thread.gmane.org/gmane.linux.ide/14907 */ |
| 4045 | { "FUJITSU MHT2060BH", NULL, ATA_HORKAGE_NONCQ }, |
Paul Rolland | 7acfaf3 | 2007-03-26 21:43:44 -0800 | [diff] [blame] | 4046 | /* NCQ is broken */ |
Jeff Garzik | 539cc7c | 2007-09-20 16:31:47 -0400 | [diff] [blame] | 4047 | { "Maxtor *", "BANC*", ATA_HORKAGE_NONCQ }, |
Alan Cox | 0e3dbc0 | 2007-09-20 15:22:47 +0100 | [diff] [blame] | 4048 | { "Maxtor 7V300F0", "VA111630", ATA_HORKAGE_NONCQ }, |
Paolo Ornati | da6f0ec | 2007-10-04 11:06:56 +0900 | [diff] [blame] | 4049 | { "ST380817AS", "3.42", ATA_HORKAGE_NONCQ }, |
Tejun Heo | e41bd3e | 2007-12-09 19:45:39 +0900 | [diff] [blame] | 4050 | { "ST3160023AS", "3.42", ATA_HORKAGE_NONCQ }, |
Jeff Garzik | 539cc7c | 2007-09-20 16:31:47 -0400 | [diff] [blame] | 4051 | |
Tejun Heo | ac70a96 | 2008-11-27 13:36:48 +0900 | [diff] [blame] | 4052 | /* Seagate NCQ + FLUSH CACHE firmware bug */ |
Tejun Heo | d10d491 | 2008-12-11 13:42:42 +0900 | [diff] [blame] | 4053 | { "ST31500341AS", "SD15", ATA_HORKAGE_NONCQ | |
Tejun Heo | ac70a96 | 2008-11-27 13:36:48 +0900 | [diff] [blame] | 4054 | ATA_HORKAGE_FIRMWARE_WARN }, |
Tejun Heo | d10d491 | 2008-12-11 13:42:42 +0900 | [diff] [blame] | 4055 | { "ST31500341AS", "SD16", ATA_HORKAGE_NONCQ | |
Tejun Heo | ac70a96 | 2008-11-27 13:36:48 +0900 | [diff] [blame] | 4056 | ATA_HORKAGE_FIRMWARE_WARN }, |
Tejun Heo | d10d491 | 2008-12-11 13:42:42 +0900 | [diff] [blame] | 4057 | { "ST31500341AS", "SD17", ATA_HORKAGE_NONCQ | |
Tejun Heo | ac70a96 | 2008-11-27 13:36:48 +0900 | [diff] [blame] | 4058 | ATA_HORKAGE_FIRMWARE_WARN }, |
Tejun Heo | d10d491 | 2008-12-11 13:42:42 +0900 | [diff] [blame] | 4059 | { "ST31500341AS", "SD18", ATA_HORKAGE_NONCQ | |
Tejun Heo | ac70a96 | 2008-11-27 13:36:48 +0900 | [diff] [blame] | 4060 | ATA_HORKAGE_FIRMWARE_WARN }, |
Tejun Heo | d10d491 | 2008-12-11 13:42:42 +0900 | [diff] [blame] | 4061 | { "ST31500341AS", "SD19", ATA_HORKAGE_NONCQ | |
Tejun Heo | ac70a96 | 2008-11-27 13:36:48 +0900 | [diff] [blame] | 4062 | ATA_HORKAGE_FIRMWARE_WARN }, |
Tejun Heo | d10d491 | 2008-12-11 13:42:42 +0900 | [diff] [blame] | 4063 | |
| 4064 | { "ST31000333AS", "SD15", ATA_HORKAGE_NONCQ | |
| 4065 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4066 | { "ST31000333AS", "SD16", ATA_HORKAGE_NONCQ | |
| 4067 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4068 | { "ST31000333AS", "SD17", ATA_HORKAGE_NONCQ | |
| 4069 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4070 | { "ST31000333AS", "SD18", ATA_HORKAGE_NONCQ | |
| 4071 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4072 | { "ST31000333AS", "SD19", ATA_HORKAGE_NONCQ | |
| 4073 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4074 | |
| 4075 | { "ST3640623AS", "SD15", ATA_HORKAGE_NONCQ | |
| 4076 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4077 | { "ST3640623AS", "SD16", ATA_HORKAGE_NONCQ | |
| 4078 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4079 | { "ST3640623AS", "SD17", ATA_HORKAGE_NONCQ | |
| 4080 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4081 | { "ST3640623AS", "SD18", ATA_HORKAGE_NONCQ | |
| 4082 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4083 | { "ST3640623AS", "SD19", ATA_HORKAGE_NONCQ | |
| 4084 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4085 | |
| 4086 | { "ST3640323AS", "SD15", ATA_HORKAGE_NONCQ | |
| 4087 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4088 | { "ST3640323AS", "SD16", ATA_HORKAGE_NONCQ | |
| 4089 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4090 | { "ST3640323AS", "SD17", ATA_HORKAGE_NONCQ | |
| 4091 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4092 | { "ST3640323AS", "SD18", ATA_HORKAGE_NONCQ | |
| 4093 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4094 | { "ST3640323AS", "SD19", ATA_HORKAGE_NONCQ | |
| 4095 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4096 | |
| 4097 | { "ST3320813AS", "SD15", ATA_HORKAGE_NONCQ | |
| 4098 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4099 | { "ST3320813AS", "SD16", ATA_HORKAGE_NONCQ | |
| 4100 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4101 | { "ST3320813AS", "SD17", ATA_HORKAGE_NONCQ | |
| 4102 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4103 | { "ST3320813AS", "SD18", ATA_HORKAGE_NONCQ | |
| 4104 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4105 | { "ST3320813AS", "SD19", ATA_HORKAGE_NONCQ | |
| 4106 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4107 | |
| 4108 | { "ST3320613AS", "SD15", ATA_HORKAGE_NONCQ | |
| 4109 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4110 | { "ST3320613AS", "SD16", ATA_HORKAGE_NONCQ | |
| 4111 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4112 | { "ST3320613AS", "SD17", ATA_HORKAGE_NONCQ | |
| 4113 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4114 | { "ST3320613AS", "SD18", ATA_HORKAGE_NONCQ | |
| 4115 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4116 | { "ST3320613AS", "SD19", ATA_HORKAGE_NONCQ | |
Tejun Heo | ac70a96 | 2008-11-27 13:36:48 +0900 | [diff] [blame] | 4117 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4118 | |
Robert Hancock | 36e337d | 2007-04-02 22:05:29 -0600 | [diff] [blame] | 4119 | /* Blacklist entries taken from Silicon Image 3124/3132 |
| 4120 | Windows driver .inf file - also several Linux problem reports */ |
| 4121 | { "HTS541060G9SA00", "MB3OC60D", ATA_HORKAGE_NONCQ, }, |
| 4122 | { "HTS541080G9SA00", "MB4OC60D", ATA_HORKAGE_NONCQ, }, |
| 4123 | { "HTS541010G9SA00", "MBZOC60D", ATA_HORKAGE_NONCQ, }, |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4124 | |
Tejun Heo | 16c55b0 | 2007-08-29 11:58:33 +0900 | [diff] [blame] | 4125 | /* devices which puke on READ_NATIVE_MAX */ |
| 4126 | { "HDS724040KLSA80", "KFAOA20N", ATA_HORKAGE_BROKEN_HPA, }, |
| 4127 | { "WDC WD3200JD-00KLB0", "WD-WCAMR1130137", ATA_HORKAGE_BROKEN_HPA }, |
| 4128 | { "WDC WD2500JD-00HBB0", "WD-WMAL71490727", ATA_HORKAGE_BROKEN_HPA }, |
| 4129 | { "MAXTOR 6L080L4", "A93.0500", ATA_HORKAGE_BROKEN_HPA }, |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4130 | |
Alan Cox | 93328e1 | 2007-09-29 04:06:48 -0400 | [diff] [blame] | 4131 | /* Devices which report 1 sector over size HPA */ |
| 4132 | { "ST340823A", NULL, ATA_HORKAGE_HPA_SIZE, }, |
| 4133 | { "ST320413A", NULL, ATA_HORKAGE_HPA_SIZE, }, |
Mikko Rapeli | b152fcd | 2008-02-19 01:41:25 +0100 | [diff] [blame] | 4134 | { "ST310211A", NULL, ATA_HORKAGE_HPA_SIZE, }, |
Alan Cox | 93328e1 | 2007-09-29 04:06:48 -0400 | [diff] [blame] | 4135 | |
Alan Cox | 6bbfd53 | 2007-11-05 22:58:58 +0000 | [diff] [blame] | 4136 | /* Devices which get the IVB wrong */ |
| 4137 | { "QUANTUM FIREBALLlct10 05", "A03.0900", ATA_HORKAGE_IVB, }, |
Alan Cox | a79067e | 2008-04-29 14:08:36 +0100 | [diff] [blame] | 4138 | /* Maybe we should just blacklist TSSTcorp... */ |
| 4139 | { "TSSTcorp CDDVDW SH-S202H", "SB00", ATA_HORKAGE_IVB, }, |
| 4140 | { "TSSTcorp CDDVDW SH-S202H", "SB01", ATA_HORKAGE_IVB, }, |
Alan Cox | 6bbfd53 | 2007-11-05 22:58:58 +0000 | [diff] [blame] | 4141 | { "TSSTcorp CDDVDW SH-S202J", "SB00", ATA_HORKAGE_IVB, }, |
Peter Missel | e9f3340 | 2007-11-27 18:04:42 +0100 | [diff] [blame] | 4142 | { "TSSTcorp CDDVDW SH-S202J", "SB01", ATA_HORKAGE_IVB, }, |
| 4143 | { "TSSTcorp CDDVDW SH-S202N", "SB00", ATA_HORKAGE_IVB, }, |
| 4144 | { "TSSTcorp CDDVDW SH-S202N", "SB01", ATA_HORKAGE_IVB, }, |
Alan Cox | 6bbfd53 | 2007-11-05 22:58:58 +0000 | [diff] [blame] | 4145 | |
Jens Axboe | 9ce8e30 | 2008-08-27 15:23:18 +0200 | [diff] [blame] | 4146 | /* Devices that do not need bridging limits applied */ |
| 4147 | { "MTRON MSP-SATA*", NULL, ATA_HORKAGE_BRIDGE_OK, }, |
| 4148 | |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4149 | /* End Marker */ |
| 4150 | { } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4151 | }; |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 4152 | |
Adrian Bunk | 741b776 | 2007-10-24 18:23:06 +0200 | [diff] [blame] | 4153 | 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] | 4154 | { |
| 4155 | const char *p; |
| 4156 | int len; |
| 4157 | |
| 4158 | /* |
| 4159 | * check for trailing wildcard: *\0 |
| 4160 | */ |
| 4161 | p = strchr(patt, wildchar); |
| 4162 | if (p && ((*(p + 1)) == 0)) |
| 4163 | len = p - patt; |
Andrew Paprocki | 317b50b | 2007-10-15 15:43:12 -0400 | [diff] [blame] | 4164 | else { |
Jeff Garzik | 539cc7c | 2007-09-20 16:31:47 -0400 | [diff] [blame] | 4165 | len = strlen(name); |
Andrew Paprocki | 317b50b | 2007-10-15 15:43:12 -0400 | [diff] [blame] | 4166 | if (!len) { |
| 4167 | if (!*patt) |
| 4168 | return 0; |
| 4169 | return -1; |
| 4170 | } |
| 4171 | } |
Jeff Garzik | 539cc7c | 2007-09-20 16:31:47 -0400 | [diff] [blame] | 4172 | |
| 4173 | return strncmp(patt, name, len); |
| 4174 | } |
| 4175 | |
Tejun Heo | 75683fe | 2007-07-05 13:31:27 +0900 | [diff] [blame] | 4176 | static unsigned long ata_dev_blacklisted(const struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4177 | { |
Tejun Heo | 8bfa79f | 2007-01-02 20:19:40 +0900 | [diff] [blame] | 4178 | unsigned char model_num[ATA_ID_PROD_LEN + 1]; |
| 4179 | unsigned char model_rev[ATA_ID_FW_REV_LEN + 1]; |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4180 | const struct ata_blacklist_entry *ad = ata_device_blacklist; |
Albert Lee | 3a77827 | 2006-06-22 13:00:25 +0800 | [diff] [blame] | 4181 | |
Tejun Heo | 8bfa79f | 2007-01-02 20:19:40 +0900 | [diff] [blame] | 4182 | ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num)); |
| 4183 | 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] | 4184 | |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4185 | while (ad->model_num) { |
Jeff Garzik | 539cc7c | 2007-09-20 16:31:47 -0400 | [diff] [blame] | 4186 | if (!strn_pattern_cmp(ad->model_num, model_num, '*')) { |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4187 | if (ad->model_rev == NULL) |
| 4188 | return ad->horkage; |
Jeff Garzik | 539cc7c | 2007-09-20 16:31:47 -0400 | [diff] [blame] | 4189 | if (!strn_pattern_cmp(ad->model_rev, model_rev, '*')) |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4190 | return ad->horkage; |
Alan Cox | f4b15fe | 2006-03-22 15:54:04 +0000 | [diff] [blame] | 4191 | } |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4192 | ad++; |
Alan Cox | f4b15fe | 2006-03-22 15:54:04 +0000 | [diff] [blame] | 4193 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4194 | return 0; |
| 4195 | } |
| 4196 | |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4197 | static int ata_dma_blacklisted(const struct ata_device *dev) |
| 4198 | { |
| 4199 | /* We don't support polling DMA. |
| 4200 | * DMA blacklist those ATAPI devices with CDB-intr (and use PIO) |
| 4201 | * if the LLDD handles only interrupts in the HSM_ST_LAST state. |
| 4202 | */ |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4203 | if ((dev->link->ap->flags & ATA_FLAG_PIO_POLLING) && |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4204 | (dev->flags & ATA_DFLAG_CDB_INTR)) |
| 4205 | return 1; |
Tejun Heo | 75683fe | 2007-07-05 13:31:27 +0900 | [diff] [blame] | 4206 | return (dev->horkage & ATA_HORKAGE_NODMA) ? 1 : 0; |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4207 | } |
| 4208 | |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 4209 | /** |
Alan Cox | 6bbfd53 | 2007-11-05 22:58:58 +0000 | [diff] [blame] | 4210 | * ata_is_40wire - check drive side detection |
| 4211 | * @dev: device |
| 4212 | * |
| 4213 | * Perform drive side detection decoding, allowing for device vendors |
| 4214 | * who can't follow the documentation. |
| 4215 | */ |
| 4216 | |
| 4217 | static int ata_is_40wire(struct ata_device *dev) |
| 4218 | { |
| 4219 | if (dev->horkage & ATA_HORKAGE_IVB) |
| 4220 | return ata_drive_40wire_relaxed(dev->id); |
| 4221 | return ata_drive_40wire(dev->id); |
| 4222 | } |
| 4223 | |
| 4224 | /** |
Alan Cox | 15a5551 | 2008-03-28 14:33:46 -0700 | [diff] [blame] | 4225 | * cable_is_40wire - 40/80/SATA decider |
| 4226 | * @ap: port to consider |
| 4227 | * |
| 4228 | * This function encapsulates the policy for speed management |
| 4229 | * in one place. At the moment we don't cache the result but |
| 4230 | * there is a good case for setting ap->cbl to the result when |
| 4231 | * we are called with unknown cables (and figuring out if it |
| 4232 | * impacts hotplug at all). |
| 4233 | * |
| 4234 | * Return 1 if the cable appears to be 40 wire. |
| 4235 | */ |
| 4236 | |
| 4237 | static int cable_is_40wire(struct ata_port *ap) |
| 4238 | { |
| 4239 | struct ata_link *link; |
| 4240 | struct ata_device *dev; |
| 4241 | |
Tejun Heo | 4a9c7b3 | 2008-10-27 19:59:23 +0900 | [diff] [blame] | 4242 | /* If the controller thinks we are 40 wire, we are. */ |
Alan Cox | 15a5551 | 2008-03-28 14:33:46 -0700 | [diff] [blame] | 4243 | if (ap->cbl == ATA_CBL_PATA40) |
| 4244 | return 1; |
Tejun Heo | 4a9c7b3 | 2008-10-27 19:59:23 +0900 | [diff] [blame] | 4245 | |
| 4246 | /* If the controller thinks we are 80 wire, we are. */ |
Alan Cox | 15a5551 | 2008-03-28 14:33:46 -0700 | [diff] [blame] | 4247 | if (ap->cbl == ATA_CBL_PATA80 || ap->cbl == ATA_CBL_SATA) |
| 4248 | return 0; |
Tejun Heo | 4a9c7b3 | 2008-10-27 19:59:23 +0900 | [diff] [blame] | 4249 | |
| 4250 | /* If the system is known to be 40 wire short cable (eg |
| 4251 | * laptop), then we allow 80 wire modes even if the drive |
| 4252 | * isn't sure. |
| 4253 | */ |
Alan Cox | f792068 | 2008-04-08 16:37:50 +0100 | [diff] [blame] | 4254 | if (ap->cbl == ATA_CBL_PATA40_SHORT) |
| 4255 | return 0; |
Alan Cox | 15a5551 | 2008-03-28 14:33:46 -0700 | [diff] [blame] | 4256 | |
Tejun Heo | 4a9c7b3 | 2008-10-27 19:59:23 +0900 | [diff] [blame] | 4257 | /* If the controller doesn't know, we scan. |
| 4258 | * |
| 4259 | * Note: We look for all 40 wire detects at this point. Any |
| 4260 | * 80 wire detect is taken to be 80 wire cable because |
| 4261 | * - in many setups only the one drive (slave if present) will |
| 4262 | * give a valid detect |
| 4263 | * - if you have a non detect capable drive you don't want it |
| 4264 | * to colour the choice |
| 4265 | */ |
Alan Cox | 15a5551 | 2008-03-28 14:33:46 -0700 | [diff] [blame] | 4266 | ata_port_for_each_link(link, ap) { |
| 4267 | ata_link_for_each_dev(dev, link) { |
Tejun Heo | 4a9c7b3 | 2008-10-27 19:59:23 +0900 | [diff] [blame] | 4268 | if (ata_dev_enabled(dev) && !ata_is_40wire(dev)) |
Alan Cox | 15a5551 | 2008-03-28 14:33:46 -0700 | [diff] [blame] | 4269 | return 0; |
| 4270 | } |
| 4271 | } |
| 4272 | return 1; |
| 4273 | } |
| 4274 | |
| 4275 | /** |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 4276 | * ata_dev_xfermask - Compute supported xfermask of the given device |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 4277 | * @dev: Device to compute xfermask for |
| 4278 | * |
Tejun Heo | acf356b | 2006-03-24 14:07:50 +0900 | [diff] [blame] | 4279 | * Compute supported xfermask of @dev and store it in |
| 4280 | * dev->*_mask. This function is responsible for applying all |
| 4281 | * known limits including host controller limits, device |
| 4282 | * blacklist, etc... |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 4283 | * |
| 4284 | * LOCKING: |
| 4285 | * None. |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 4286 | */ |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 4287 | static void ata_dev_xfermask(struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4288 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4289 | struct ata_link *link = dev->link; |
| 4290 | struct ata_port *ap = link->ap; |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4291 | struct ata_host *host = ap->host; |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 4292 | unsigned long xfer_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4293 | |
Tejun Heo | 37deecb | 2006-08-10 16:59:07 +0900 | [diff] [blame] | 4294 | /* controller modes available */ |
Tejun Heo | 565083e | 2006-04-02 17:54:47 +0900 | [diff] [blame] | 4295 | xfer_mask = ata_pack_xfermask(ap->pio_mask, |
| 4296 | ap->mwdma_mask, ap->udma_mask); |
| 4297 | |
Robert Hancock | 8343f88 | 2007-03-06 02:37:51 -0800 | [diff] [blame] | 4298 | /* drive modes available */ |
Tejun Heo | 37deecb | 2006-08-10 16:59:07 +0900 | [diff] [blame] | 4299 | xfer_mask &= ata_pack_xfermask(dev->pio_mask, |
| 4300 | dev->mwdma_mask, dev->udma_mask); |
| 4301 | xfer_mask &= ata_id_xfermask(dev->id); |
Tejun Heo | 565083e | 2006-04-02 17:54:47 +0900 | [diff] [blame] | 4302 | |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 4303 | /* |
| 4304 | * CFA Advanced TrueIDE timings are not allowed on a shared |
| 4305 | * cable |
| 4306 | */ |
| 4307 | if (ata_dev_pair(dev)) { |
| 4308 | /* No PIO5 or PIO6 */ |
| 4309 | xfer_mask &= ~(0x03 << (ATA_SHIFT_PIO + 5)); |
| 4310 | /* No MWDMA3 or MWDMA 4 */ |
| 4311 | xfer_mask &= ~(0x03 << (ATA_SHIFT_MWDMA + 3)); |
| 4312 | } |
| 4313 | |
Tejun Heo | 37deecb | 2006-08-10 16:59:07 +0900 | [diff] [blame] | 4314 | if (ata_dma_blacklisted(dev)) { |
| 4315 | xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA); |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 4316 | ata_dev_printk(dev, KERN_WARNING, |
| 4317 | "device is on DMA blacklist, disabling DMA\n"); |
Tejun Heo | 37deecb | 2006-08-10 16:59:07 +0900 | [diff] [blame] | 4318 | } |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 4319 | |
Petr Vandrovec | 14d66ab | 2007-03-08 10:12:12 +0100 | [diff] [blame] | 4320 | if ((host->flags & ATA_HOST_SIMPLEX) && |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 4321 | host->simplex_claimed && host->simplex_claimed != ap) { |
Tejun Heo | 37deecb | 2006-08-10 16:59:07 +0900 | [diff] [blame] | 4322 | xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA); |
| 4323 | ata_dev_printk(dev, KERN_WARNING, "simplex DMA is claimed by " |
| 4324 | "other device, disabling DMA\n"); |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 4325 | } |
Tejun Heo | 565083e | 2006-04-02 17:54:47 +0900 | [diff] [blame] | 4326 | |
Jeff Garzik | e424675 | 2007-03-09 09:56:46 -0500 | [diff] [blame] | 4327 | if (ap->flags & ATA_FLAG_NO_IORDY) |
| 4328 | xfer_mask &= ata_pio_mask_no_iordy(dev); |
| 4329 | |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 4330 | if (ap->ops->mode_filter) |
Alan Cox | a76b62c | 2007-03-09 09:34:07 -0500 | [diff] [blame] | 4331 | xfer_mask = ap->ops->mode_filter(dev, xfer_mask); |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 4332 | |
Robert Hancock | 8343f88 | 2007-03-06 02:37:51 -0800 | [diff] [blame] | 4333 | /* Apply cable rule here. Don't apply it early because when |
| 4334 | * we handle hot plug the cable type can itself change. |
| 4335 | * Check this last so that we know if the transfer rate was |
| 4336 | * solely limited by the cable. |
| 4337 | * Unknown or 80 wire cables reported host side are checked |
| 4338 | * drive side as well. Cases where we know a 40wire cable |
| 4339 | * is used safely for 80 are not checked here. |
| 4340 | */ |
| 4341 | if (xfer_mask & (0xF8 << ATA_SHIFT_UDMA)) |
| 4342 | /* UDMA/44 or higher would be available */ |
Alan Cox | 15a5551 | 2008-03-28 14:33:46 -0700 | [diff] [blame] | 4343 | if (cable_is_40wire(ap)) { |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 4344 | ata_dev_printk(dev, KERN_WARNING, |
Robert Hancock | 8343f88 | 2007-03-06 02:37:51 -0800 | [diff] [blame] | 4345 | "limited to UDMA/33 due to 40-wire cable\n"); |
| 4346 | xfer_mask &= ~(0xF8 << ATA_SHIFT_UDMA); |
| 4347 | } |
| 4348 | |
Tejun Heo | 565083e | 2006-04-02 17:54:47 +0900 | [diff] [blame] | 4349 | ata_unpack_xfermask(xfer_mask, &dev->pio_mask, |
| 4350 | &dev->mwdma_mask, &dev->udma_mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4351 | } |
| 4352 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4353 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4354 | * ata_dev_set_xfermode - Issue SET FEATURES - XFER MODE command |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4355 | * @dev: Device to which command will be sent |
| 4356 | * |
Jeff Garzik | 780a87f | 2005-05-30 15:41:05 -0400 | [diff] [blame] | 4357 | * Issue SET FEATURES - XFER MODE command to device @dev |
| 4358 | * on port @ap. |
| 4359 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4360 | * LOCKING: |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4361 | * PCI/etc. bus probe sem. |
Tejun Heo | 83206a2 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 4362 | * |
| 4363 | * RETURNS: |
| 4364 | * 0 on success, AC_ERR_* mask otherwise. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4365 | */ |
| 4366 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 4367 | static unsigned int ata_dev_set_xfermode(struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4368 | { |
Tejun Heo | a012370 | 2005-12-13 14:49:31 +0900 | [diff] [blame] | 4369 | struct ata_taskfile tf; |
Tejun Heo | 83206a2 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 4370 | unsigned int err_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4371 | |
| 4372 | /* set up set-features taskfile */ |
| 4373 | DPRINTK("set features - xfer mode\n"); |
| 4374 | |
Tejun Heo | 464cf17 | 2007-05-27 15:10:40 +0200 | [diff] [blame] | 4375 | /* Some controllers and ATAPI devices show flaky interrupt |
| 4376 | * behavior after setting xfer mode. Use polling instead. |
| 4377 | */ |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 4378 | ata_tf_init(dev, &tf); |
Tejun Heo | a012370 | 2005-12-13 14:49:31 +0900 | [diff] [blame] | 4379 | tf.command = ATA_CMD_SET_FEATURES; |
| 4380 | tf.feature = SETFEATURES_XFER; |
Tejun Heo | 464cf17 | 2007-05-27 15:10:40 +0200 | [diff] [blame] | 4381 | tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_POLLING; |
Tejun Heo | a012370 | 2005-12-13 14:49:31 +0900 | [diff] [blame] | 4382 | tf.protocol = ATA_PROT_NODATA; |
Alan Cox | b9f8ab2 | 2007-11-19 14:33:11 +0000 | [diff] [blame] | 4383 | /* If we are using IORDY we must send the mode setting command */ |
Jeff Garzik | 11b7bec | 2007-11-23 21:12:14 -0500 | [diff] [blame] | 4384 | if (ata_pio_need_iordy(dev)) |
| 4385 | tf.nsect = dev->xfer_mode; |
Alan Cox | b9f8ab2 | 2007-11-19 14:33:11 +0000 | [diff] [blame] | 4386 | /* If the device has IORDY and the controller does not - turn it off */ |
| 4387 | else if (ata_id_has_iordy(dev->id)) |
Jeff Garzik | 11b7bec | 2007-11-23 21:12:14 -0500 | [diff] [blame] | 4388 | tf.nsect = 0x01; |
Alan Cox | b9f8ab2 | 2007-11-19 14:33:11 +0000 | [diff] [blame] | 4389 | else /* In the ancient relic department - skip all of this */ |
| 4390 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4391 | |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 4392 | 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] | 4393 | |
Tejun Heo | 83206a2 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 4394 | DPRINTK("EXIT, err_mask=%x\n", err_mask); |
| 4395 | return err_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4396 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4397 | /** |
Jeff Garzik | 218f3d3 | 2007-10-25 00:33:27 -0400 | [diff] [blame] | 4398 | * ata_dev_set_feature - Issue SET FEATURES - SATA FEATURES |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 4399 | * @dev: Device to which command will be sent |
| 4400 | * @enable: Whether to enable or disable the feature |
Jeff Garzik | 218f3d3 | 2007-10-25 00:33:27 -0400 | [diff] [blame] | 4401 | * @feature: The sector count represents the feature to set |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 4402 | * |
| 4403 | * Issue SET FEATURES - SATA FEATURES command to device @dev |
Jeff Garzik | 218f3d3 | 2007-10-25 00:33:27 -0400 | [diff] [blame] | 4404 | * on port @ap with sector count |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 4405 | * |
| 4406 | * LOCKING: |
| 4407 | * PCI/etc. bus probe sem. |
| 4408 | * |
| 4409 | * RETURNS: |
| 4410 | * 0 on success, AC_ERR_* mask otherwise. |
| 4411 | */ |
Jeff Garzik | 218f3d3 | 2007-10-25 00:33:27 -0400 | [diff] [blame] | 4412 | static unsigned int ata_dev_set_feature(struct ata_device *dev, u8 enable, |
| 4413 | u8 feature) |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 4414 | { |
| 4415 | struct ata_taskfile tf; |
| 4416 | unsigned int err_mask; |
| 4417 | |
| 4418 | /* set up set-features taskfile */ |
| 4419 | DPRINTK("set features - SATA features\n"); |
| 4420 | |
| 4421 | ata_tf_init(dev, &tf); |
| 4422 | tf.command = ATA_CMD_SET_FEATURES; |
| 4423 | tf.feature = enable; |
| 4424 | tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 4425 | tf.protocol = ATA_PROT_NODATA; |
Jeff Garzik | 218f3d3 | 2007-10-25 00:33:27 -0400 | [diff] [blame] | 4426 | tf.nsect = feature; |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 4427 | |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 4428 | 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] | 4429 | |
| 4430 | DPRINTK("EXIT, err_mask=%x\n", err_mask); |
| 4431 | return err_mask; |
| 4432 | } |
| 4433 | |
| 4434 | /** |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4435 | * ata_dev_init_params - Issue INIT DEV PARAMS command |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4436 | * @dev: Device to which command will be sent |
Randy Dunlap | e2a7f77 | 2006-05-18 10:50:18 -0700 | [diff] [blame] | 4437 | * @heads: Number of heads (taskfile parameter) |
| 4438 | * @sectors: Number of sectors (taskfile parameter) |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4439 | * |
| 4440 | * LOCKING: |
Tejun Heo | 6aff8f1 | 2006-02-15 18:24:09 +0900 | [diff] [blame] | 4441 | * Kernel thread context (may sleep) |
| 4442 | * |
| 4443 | * RETURNS: |
| 4444 | * 0 on success, AC_ERR_* mask otherwise. |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4445 | */ |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 4446 | static unsigned int ata_dev_init_params(struct ata_device *dev, |
| 4447 | u16 heads, u16 sectors) |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4448 | { |
Tejun Heo | a012370 | 2005-12-13 14:49:31 +0900 | [diff] [blame] | 4449 | struct ata_taskfile tf; |
Tejun Heo | 6aff8f1 | 2006-02-15 18:24:09 +0900 | [diff] [blame] | 4450 | unsigned int err_mask; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4451 | |
| 4452 | /* Number of sectors per track 1-255. Number of heads 1-16 */ |
| 4453 | if (sectors < 1 || sectors > 255 || heads < 1 || heads > 16) |
Albert Lee | 00b6f5e | 2006-03-27 16:39:18 +0800 | [diff] [blame] | 4454 | return AC_ERR_INVALID; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4455 | |
| 4456 | /* set up init dev params taskfile */ |
| 4457 | DPRINTK("init dev params \n"); |
| 4458 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 4459 | ata_tf_init(dev, &tf); |
Tejun Heo | a012370 | 2005-12-13 14:49:31 +0900 | [diff] [blame] | 4460 | tf.command = ATA_CMD_INIT_DEV_PARAMS; |
| 4461 | tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 4462 | tf.protocol = ATA_PROT_NODATA; |
| 4463 | tf.nsect = sectors; |
| 4464 | tf.device |= (heads - 1) & 0x0f; /* max head = num. of heads - 1 */ |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4465 | |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 4466 | 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] | 4467 | /* A clean abort indicates an original or just out of spec drive |
| 4468 | and we should continue as we issue the setup based on the |
| 4469 | drive reported working geometry */ |
| 4470 | if (err_mask == AC_ERR_DEV && (tf.feature & ATA_ABORTED)) |
| 4471 | err_mask = 0; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4472 | |
Tejun Heo | 6aff8f1 | 2006-02-15 18:24:09 +0900 | [diff] [blame] | 4473 | DPRINTK("EXIT, err_mask=%x\n", err_mask); |
| 4474 | return err_mask; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4475 | } |
| 4476 | |
| 4477 | /** |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4478 | * ata_sg_clean - Unmap DMA memory associated with command |
| 4479 | * @qc: Command containing DMA memory to be released |
| 4480 | * |
| 4481 | * Unmap all mapped DMA memory associated with this command. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4482 | * |
| 4483 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4484 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4485 | */ |
Tejun Heo | 70e6ad0 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 4486 | void ata_sg_clean(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4487 | { |
| 4488 | struct ata_port *ap = qc->ap; |
Tejun Heo | ff2aeb1 | 2007-12-05 16:43:11 +0900 | [diff] [blame] | 4489 | struct scatterlist *sg = qc->sg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4490 | int dir = qc->dma_dir; |
| 4491 | |
Tejun Heo | a4631474 | 2006-02-11 19:11:13 +0900 | [diff] [blame] | 4492 | WARN_ON(sg == NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4493 | |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 4494 | VPRINTK("unmapping %u sg elements\n", qc->n_elem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4495 | |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 4496 | if (qc->n_elem) |
| 4497 | dma_unmap_sg(ap->dev, sg, qc->n_elem, dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4498 | |
| 4499 | qc->flags &= ~ATA_QCFLAG_DMAMAP; |
Tejun Heo | ff2aeb1 | 2007-12-05 16:43:11 +0900 | [diff] [blame] | 4500 | qc->sg = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4501 | } |
| 4502 | |
| 4503 | /** |
Tejun Heo | 5895ef9 | 2008-06-17 12:36:26 +0900 | [diff] [blame] | 4504 | * atapi_check_dma - Check whether ATAPI DMA can be supported |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4505 | * @qc: Metadata associated with taskfile to check |
| 4506 | * |
Jeff Garzik | 780a87f | 2005-05-30 15:41:05 -0400 | [diff] [blame] | 4507 | * Allow low-level driver to filter ATA PACKET commands, returning |
| 4508 | * a status indicating whether or not it is OK to use DMA for the |
| 4509 | * supplied PACKET command. |
| 4510 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4511 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4512 | * spin_lock_irqsave(host lock) |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4513 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4514 | * RETURNS: 0 when ATAPI DMA can be used |
| 4515 | * nonzero otherwise |
| 4516 | */ |
Tejun Heo | 5895ef9 | 2008-06-17 12:36:26 +0900 | [diff] [blame] | 4517 | int atapi_check_dma(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4518 | { |
| 4519 | struct ata_port *ap = qc->ap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4520 | |
Tejun Heo | b9a4197 | 2007-06-27 02:48:43 +0900 | [diff] [blame] | 4521 | /* Don't allow DMA if it isn't multiple of 16 bytes. Quite a |
| 4522 | * few ATAPI devices choke on such DMA requests. |
| 4523 | */ |
Tejun Heo | 6a87e42 | 2008-11-03 19:01:09 +0900 | [diff] [blame] | 4524 | if (!(qc->dev->horkage & ATA_HORKAGE_ATAPI_MOD16_DMA) && |
| 4525 | unlikely(qc->nbytes & 15)) |
Tejun Heo | b9a4197 | 2007-06-27 02:48:43 +0900 | [diff] [blame] | 4526 | return 1; |
Albert Lee | 6f23a31 | 2007-04-02 11:39:25 +0800 | [diff] [blame] | 4527 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4528 | if (ap->ops->check_atapi_dma) |
Tejun Heo | b9a4197 | 2007-06-27 02:48:43 +0900 | [diff] [blame] | 4529 | return ap->ops->check_atapi_dma(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4530 | |
Tejun Heo | b9a4197 | 2007-06-27 02:48:43 +0900 | [diff] [blame] | 4531 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4532 | } |
Tejun Heo | b9a4197 | 2007-06-27 02:48:43 +0900 | [diff] [blame] | 4533 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4534 | /** |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 4535 | * ata_std_qc_defer - Check whether a qc needs to be deferred |
| 4536 | * @qc: ATA command in question |
| 4537 | * |
| 4538 | * Non-NCQ commands cannot run with any other command, NCQ or |
| 4539 | * not. As upper layer only knows the queue depth, we are |
| 4540 | * responsible for maintaining exclusion. This function checks |
| 4541 | * whether a new command @qc can be issued. |
| 4542 | * |
| 4543 | * LOCKING: |
| 4544 | * spin_lock_irqsave(host lock) |
| 4545 | * |
| 4546 | * RETURNS: |
| 4547 | * ATA_DEFER_* if deferring is needed, 0 otherwise. |
| 4548 | */ |
| 4549 | int ata_std_qc_defer(struct ata_queued_cmd *qc) |
| 4550 | { |
| 4551 | struct ata_link *link = qc->dev->link; |
| 4552 | |
| 4553 | if (qc->tf.protocol == ATA_PROT_NCQ) { |
| 4554 | if (!ata_tag_valid(link->active_tag)) |
| 4555 | return 0; |
| 4556 | } else { |
| 4557 | if (!ata_tag_valid(link->active_tag) && !link->sactive) |
| 4558 | return 0; |
| 4559 | } |
| 4560 | |
| 4561 | return ATA_DEFER_LINK; |
| 4562 | } |
| 4563 | |
Brian King | e46834c | 2006-03-17 17:04:03 -0600 | [diff] [blame] | 4564 | void ata_noop_qc_prep(struct ata_queued_cmd *qc) { } |
| 4565 | |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4566 | /** |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4567 | * ata_sg_init - Associate command with scatter-gather table. |
| 4568 | * @qc: Command to be associated |
| 4569 | * @sg: Scatter-gather table. |
| 4570 | * @n_elem: Number of elements in s/g table. |
| 4571 | * |
| 4572 | * Initialize the data-related elements of queued_cmd @qc |
| 4573 | * to point to a scatter-gather table @sg, containing @n_elem |
| 4574 | * elements. |
| 4575 | * |
| 4576 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4577 | * spin_lock_irqsave(host lock) |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4578 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4579 | void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, |
| 4580 | unsigned int n_elem) |
| 4581 | { |
Tejun Heo | ff2aeb1 | 2007-12-05 16:43:11 +0900 | [diff] [blame] | 4582 | qc->sg = sg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4583 | qc->n_elem = n_elem; |
Tejun Heo | ff2aeb1 | 2007-12-05 16:43:11 +0900 | [diff] [blame] | 4584 | qc->cursg = qc->sg; |
| 4585 | } |
| 4586 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4587 | /** |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4588 | * ata_sg_setup - DMA-map the scatter-gather table associated with a command. |
| 4589 | * @qc: Command with scatter-gather table to be mapped. |
| 4590 | * |
| 4591 | * DMA-map the scatter-gather table associated with queued_cmd @qc. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4592 | * |
| 4593 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4594 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4595 | * |
| 4596 | * RETURNS: |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4597 | * Zero on success, negative on error. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4598 | * |
| 4599 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4600 | static int ata_sg_setup(struct ata_queued_cmd *qc) |
| 4601 | { |
| 4602 | struct ata_port *ap = qc->ap; |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 4603 | unsigned int n_elem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4604 | |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 4605 | VPRINTK("ENTER, ata%u\n", ap->print_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4606 | |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 4607 | n_elem = dma_map_sg(ap->dev, qc->sg, qc->n_elem, qc->dma_dir); |
| 4608 | if (n_elem < 1) |
| 4609 | return -1; |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 4610 | |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 4611 | DPRINTK("%d sg elements mapped\n", n_elem); |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 4612 | |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 4613 | qc->n_elem = n_elem; |
Tejun Heo | f92a263 | 2007-12-05 16:43:10 +0900 | [diff] [blame] | 4614 | qc->flags |= ATA_QCFLAG_DMAMAP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4615 | |
| 4616 | return 0; |
| 4617 | } |
| 4618 | |
| 4619 | /** |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 4620 | * swap_buf_le16 - swap halves of 16-bit words in place |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 4621 | * @buf: Buffer to swap |
| 4622 | * @buf_words: Number of 16-bit words in buffer. |
| 4623 | * |
| 4624 | * Swap halves of 16-bit words if needed to convert from |
| 4625 | * little-endian byte order to native cpu byte order, or |
| 4626 | * vice-versa. |
| 4627 | * |
| 4628 | * LOCKING: |
Randy Dunlap | 6f0ef4f | 2005-10-25 01:44:30 -0400 | [diff] [blame] | 4629 | * Inherited from caller. |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 4630 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4631 | void swap_buf_le16(u16 *buf, unsigned int buf_words) |
| 4632 | { |
| 4633 | #ifdef __BIG_ENDIAN |
| 4634 | unsigned int i; |
| 4635 | |
| 4636 | for (i = 0; i < buf_words; i++) |
| 4637 | buf[i] = le16_to_cpu(buf[i]); |
| 4638 | #endif /* __BIG_ENDIAN */ |
| 4639 | } |
| 4640 | |
Albert Lee | 6ae4cfb | 2005-08-12 14:15:34 +0800 | [diff] [blame] | 4641 | /** |
Tejun Heo | 8a8bc22 | 2008-11-10 14:48:21 +0900 | [diff] [blame] | 4642 | * ata_qc_new - Request an available ATA command, for queueing |
| 4643 | * @ap: Port associated with device @dev |
| 4644 | * @dev: Device from whom we request an available command structure |
| 4645 | * |
| 4646 | * LOCKING: |
| 4647 | * None. |
| 4648 | */ |
| 4649 | |
| 4650 | static struct ata_queued_cmd *ata_qc_new(struct ata_port *ap) |
| 4651 | { |
| 4652 | struct ata_queued_cmd *qc = NULL; |
| 4653 | unsigned int i; |
| 4654 | |
| 4655 | /* no command while frozen */ |
| 4656 | if (unlikely(ap->pflags & ATA_PFLAG_FROZEN)) |
| 4657 | return NULL; |
| 4658 | |
| 4659 | /* the last tag is reserved for internal command. */ |
| 4660 | for (i = 0; i < ATA_MAX_QUEUE - 1; i++) |
| 4661 | if (!test_and_set_bit(i, &ap->qc_allocated)) { |
| 4662 | qc = __ata_qc_from_tag(ap, i); |
| 4663 | break; |
| 4664 | } |
| 4665 | |
| 4666 | if (qc) |
| 4667 | qc->tag = i; |
| 4668 | |
| 4669 | return qc; |
| 4670 | } |
| 4671 | |
| 4672 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4673 | * ata_qc_new_init - Request an available ATA command, and initialize it |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4674 | * @dev: Device from whom we request an available command structure |
Randy Dunlap | 3cd8ddb | 2008-10-26 20:19:32 -0700 | [diff] [blame] | 4675 | * @tag: command tag |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4676 | * |
| 4677 | * LOCKING: |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4678 | * None. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4679 | */ |
| 4680 | |
Tejun Heo | 8a8bc22 | 2008-11-10 14:48:21 +0900 | [diff] [blame] | 4681 | struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4682 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4683 | struct ata_port *ap = dev->link->ap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4684 | struct ata_queued_cmd *qc; |
| 4685 | |
Tejun Heo | 8a8bc22 | 2008-11-10 14:48:21 +0900 | [diff] [blame] | 4686 | qc = ata_qc_new(ap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4687 | if (qc) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4688 | qc->scsicmd = NULL; |
| 4689 | qc->ap = ap; |
| 4690 | qc->dev = dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4691 | |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 4692 | ata_qc_reinit(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4693 | } |
| 4694 | |
| 4695 | return qc; |
| 4696 | } |
| 4697 | |
Tejun Heo | 8a8bc22 | 2008-11-10 14:48:21 +0900 | [diff] [blame] | 4698 | /** |
| 4699 | * ata_qc_free - free unused ata_queued_cmd |
| 4700 | * @qc: Command to complete |
| 4701 | * |
| 4702 | * Designed to free unused ata_queued_cmd object |
| 4703 | * in case something prevents using it. |
| 4704 | * |
| 4705 | * LOCKING: |
| 4706 | * spin_lock_irqsave(host lock) |
| 4707 | */ |
| 4708 | void ata_qc_free(struct ata_queued_cmd *qc) |
| 4709 | { |
| 4710 | struct ata_port *ap = qc->ap; |
| 4711 | unsigned int tag; |
| 4712 | |
| 4713 | WARN_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ |
| 4714 | |
| 4715 | qc->flags = 0; |
| 4716 | tag = qc->tag; |
| 4717 | if (likely(ata_tag_valid(tag))) { |
| 4718 | qc->tag = ATA_TAG_POISON; |
| 4719 | clear_bit(tag, &ap->qc_allocated); |
| 4720 | } |
| 4721 | } |
| 4722 | |
Tejun Heo | 7601442 | 2006-02-11 15:13:49 +0900 | [diff] [blame] | 4723 | void __ata_qc_complete(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4724 | { |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4725 | struct ata_port *ap = qc->ap; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4726 | struct ata_link *link = qc->dev->link; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4727 | |
Tejun Heo | a4631474 | 2006-02-11 19:11:13 +0900 | [diff] [blame] | 4728 | WARN_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ |
| 4729 | WARN_ON(!(qc->flags & ATA_QCFLAG_ACTIVE)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4730 | |
| 4731 | if (likely(qc->flags & ATA_QCFLAG_DMAMAP)) |
| 4732 | ata_sg_clean(qc); |
| 4733 | |
Tejun Heo | 7401abf | 2006-05-15 20:57:32 +0900 | [diff] [blame] | 4734 | /* command should be marked inactive atomically with qc completion */ |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 4735 | if (qc->tf.protocol == ATA_PROT_NCQ) { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4736 | link->sactive &= ~(1 << qc->tag); |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 4737 | if (!link->sactive) |
| 4738 | ap->nr_active_links--; |
| 4739 | } else { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4740 | link->active_tag = ATA_TAG_POISON; |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 4741 | ap->nr_active_links--; |
| 4742 | } |
| 4743 | |
| 4744 | /* clear exclusive status */ |
| 4745 | if (unlikely(qc->flags & ATA_QCFLAG_CLEAR_EXCL && |
| 4746 | ap->excl_link == link)) |
| 4747 | ap->excl_link = NULL; |
Tejun Heo | 7401abf | 2006-05-15 20:57:32 +0900 | [diff] [blame] | 4748 | |
Albert Lee | 3f3791d | 2005-08-16 14:25:38 +0800 | [diff] [blame] | 4749 | /* atapi: mark qc as inactive to prevent the interrupt handler |
| 4750 | * from completing the command twice later, before the error handler |
| 4751 | * is called. (when rc != 0 and atapi request sense is needed) |
| 4752 | */ |
| 4753 | qc->flags &= ~ATA_QCFLAG_ACTIVE; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4754 | ap->qc_active &= ~(1 << qc->tag); |
Albert Lee | 3f3791d | 2005-08-16 14:25:38 +0800 | [diff] [blame] | 4755 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4756 | /* call completion callback */ |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 4757 | qc->complete_fn(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4758 | } |
| 4759 | |
Tejun Heo | 39599a5 | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 4760 | static void fill_result_tf(struct ata_queued_cmd *qc) |
| 4761 | { |
| 4762 | struct ata_port *ap = qc->ap; |
| 4763 | |
Tejun Heo | 39599a5 | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 4764 | qc->result_tf.flags = qc->tf.flags; |
Tejun Heo | 22183bf | 2008-04-07 22:47:20 +0900 | [diff] [blame] | 4765 | ap->ops->qc_fill_rtf(qc); |
Tejun Heo | 39599a5 | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 4766 | } |
| 4767 | |
Tejun Heo | 00115e0 | 2007-11-27 19:28:58 +0900 | [diff] [blame] | 4768 | static void ata_verify_xfer(struct ata_queued_cmd *qc) |
| 4769 | { |
| 4770 | struct ata_device *dev = qc->dev; |
| 4771 | |
| 4772 | if (ata_tag_internal(qc->tag)) |
| 4773 | return; |
| 4774 | |
| 4775 | if (ata_is_nodata(qc->tf.protocol)) |
| 4776 | return; |
| 4777 | |
| 4778 | if ((dev->mwdma_mask || dev->udma_mask) && ata_is_pio(qc->tf.protocol)) |
| 4779 | return; |
| 4780 | |
| 4781 | dev->flags &= ~ATA_DFLAG_DUBIOUS_XFER; |
| 4782 | } |
| 4783 | |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 4784 | /** |
| 4785 | * ata_qc_complete - Complete an active ATA command |
| 4786 | * @qc: Command to complete |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 4787 | * |
| 4788 | * Indicate to the mid and upper layers that an ATA |
| 4789 | * command has completed, with either an ok or not-ok status. |
| 4790 | * |
| 4791 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4792 | * spin_lock_irqsave(host lock) |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 4793 | */ |
| 4794 | void ata_qc_complete(struct ata_queued_cmd *qc) |
| 4795 | { |
| 4796 | struct ata_port *ap = qc->ap; |
| 4797 | |
| 4798 | /* XXX: New EH and old EH use different mechanisms to |
| 4799 | * synchronize EH with regular execution path. |
| 4800 | * |
| 4801 | * In new EH, a failed qc is marked with ATA_QCFLAG_FAILED. |
| 4802 | * Normal execution path is responsible for not accessing a |
| 4803 | * failed qc. libata core enforces the rule by returning NULL |
| 4804 | * from ata_qc_from_tag() for failed qcs. |
| 4805 | * |
| 4806 | * Old EH depends on ata_qc_complete() nullifying completion |
| 4807 | * requests if ATA_QCFLAG_EH_SCHEDULED is set. Old EH does |
| 4808 | * not synchronize with interrupt handler. Only PIO task is |
| 4809 | * taken care of. |
| 4810 | */ |
| 4811 | if (ap->ops->error_handler) { |
Tejun Heo | 4dbfa39 | 2007-10-25 18:22:44 +0900 | [diff] [blame] | 4812 | struct ata_device *dev = qc->dev; |
| 4813 | struct ata_eh_info *ehi = &dev->link->eh_info; |
| 4814 | |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 4815 | WARN_ON(ap->pflags & ATA_PFLAG_FROZEN); |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 4816 | |
| 4817 | if (unlikely(qc->err_mask)) |
| 4818 | qc->flags |= ATA_QCFLAG_FAILED; |
| 4819 | |
| 4820 | if (unlikely(qc->flags & ATA_QCFLAG_FAILED)) { |
| 4821 | if (!ata_tag_internal(qc->tag)) { |
| 4822 | /* always fill result TF for failed qc */ |
Tejun Heo | 39599a5 | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 4823 | fill_result_tf(qc); |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 4824 | ata_qc_schedule_eh(qc); |
| 4825 | return; |
| 4826 | } |
| 4827 | } |
| 4828 | |
| 4829 | /* read result TF if requested */ |
| 4830 | if (qc->flags & ATA_QCFLAG_RESULT_TF) |
Tejun Heo | 39599a5 | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 4831 | fill_result_tf(qc); |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 4832 | |
Tejun Heo | 4dbfa39 | 2007-10-25 18:22:44 +0900 | [diff] [blame] | 4833 | /* Some commands need post-processing after successful |
| 4834 | * completion. |
| 4835 | */ |
| 4836 | switch (qc->tf.command) { |
| 4837 | case ATA_CMD_SET_FEATURES: |
| 4838 | if (qc->tf.feature != SETFEATURES_WC_ON && |
| 4839 | qc->tf.feature != SETFEATURES_WC_OFF) |
| 4840 | break; |
| 4841 | /* fall through */ |
| 4842 | case ATA_CMD_INIT_DEV_PARAMS: /* CHS translation changed */ |
| 4843 | case ATA_CMD_SET_MULTI: /* multi_count changed */ |
| 4844 | /* revalidate device */ |
| 4845 | ehi->dev_action[dev->devno] |= ATA_EH_REVALIDATE; |
| 4846 | ata_port_schedule_eh(ap); |
| 4847 | break; |
Tejun Heo | 054a5fb | 2007-10-25 18:30:36 +0900 | [diff] [blame] | 4848 | |
| 4849 | case ATA_CMD_SLEEP: |
| 4850 | dev->flags |= ATA_DFLAG_SLEEPING; |
| 4851 | break; |
Tejun Heo | 4dbfa39 | 2007-10-25 18:22:44 +0900 | [diff] [blame] | 4852 | } |
| 4853 | |
Tejun Heo | 00115e0 | 2007-11-27 19:28:58 +0900 | [diff] [blame] | 4854 | if (unlikely(dev->flags & ATA_DFLAG_DUBIOUS_XFER)) |
| 4855 | ata_verify_xfer(qc); |
| 4856 | |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 4857 | __ata_qc_complete(qc); |
| 4858 | } else { |
| 4859 | if (qc->flags & ATA_QCFLAG_EH_SCHEDULED) |
| 4860 | return; |
| 4861 | |
| 4862 | /* read result TF if failed or requested */ |
| 4863 | if (qc->err_mask || qc->flags & ATA_QCFLAG_RESULT_TF) |
Tejun Heo | 39599a5 | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 4864 | fill_result_tf(qc); |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 4865 | |
| 4866 | __ata_qc_complete(qc); |
| 4867 | } |
| 4868 | } |
| 4869 | |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4870 | /** |
| 4871 | * ata_qc_complete_multiple - Complete multiple qcs successfully |
| 4872 | * @ap: port in question |
| 4873 | * @qc_active: new qc_active mask |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4874 | * |
| 4875 | * Complete in-flight commands. This functions is meant to be |
| 4876 | * called from low-level driver's interrupt routine to complete |
| 4877 | * requests normally. ap->qc_active and @qc_active is compared |
| 4878 | * and commands are completed accordingly. |
| 4879 | * |
| 4880 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4881 | * spin_lock_irqsave(host lock) |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4882 | * |
| 4883 | * RETURNS: |
| 4884 | * Number of completed commands on success, -errno otherwise. |
| 4885 | */ |
Tejun Heo | 79f97da | 2008-04-07 22:47:20 +0900 | [diff] [blame] | 4886 | int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active) |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4887 | { |
| 4888 | int nr_done = 0; |
| 4889 | u32 done_mask; |
| 4890 | int i; |
| 4891 | |
| 4892 | done_mask = ap->qc_active ^ qc_active; |
| 4893 | |
| 4894 | if (unlikely(done_mask & qc_active)) { |
| 4895 | ata_port_printk(ap, KERN_ERR, "illegal qc_active transition " |
| 4896 | "(%08x->%08x)\n", ap->qc_active, qc_active); |
| 4897 | return -EINVAL; |
| 4898 | } |
| 4899 | |
| 4900 | for (i = 0; i < ATA_MAX_QUEUE; i++) { |
| 4901 | struct ata_queued_cmd *qc; |
| 4902 | |
| 4903 | if (!(done_mask & (1 << i))) |
| 4904 | continue; |
| 4905 | |
| 4906 | if ((qc = ata_qc_from_tag(ap, i))) { |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4907 | ata_qc_complete(qc); |
| 4908 | nr_done++; |
| 4909 | } |
| 4910 | } |
| 4911 | |
| 4912 | return nr_done; |
| 4913 | } |
| 4914 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4915 | /** |
| 4916 | * ata_qc_issue - issue taskfile to device |
| 4917 | * @qc: command to issue to device |
| 4918 | * |
| 4919 | * Prepare an ATA command to submission to device. |
| 4920 | * This includes mapping the data into a DMA-able |
| 4921 | * area, filling in the S/G table, and finally |
| 4922 | * writing the taskfile to hardware, starting the command. |
| 4923 | * |
| 4924 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4925 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4926 | */ |
Tejun Heo | 8e0e694 | 2006-03-31 20:41:11 +0900 | [diff] [blame] | 4927 | void ata_qc_issue(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4928 | { |
| 4929 | struct ata_port *ap = qc->ap; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4930 | struct ata_link *link = qc->dev->link; |
Tejun Heo | 405e66b | 2007-11-27 19:28:53 +0900 | [diff] [blame] | 4931 | u8 prot = qc->tf.protocol; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4932 | |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4933 | /* Make sure only one non-NCQ command is outstanding. The |
| 4934 | * check is skipped for old EH because it reuses active qc to |
| 4935 | * request ATAPI sense. |
| 4936 | */ |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4937 | WARN_ON(ap->ops->error_handler && ata_tag_valid(link->active_tag)); |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4938 | |
Tejun Heo | 1973a02 | 2007-12-05 10:36:13 +0900 | [diff] [blame] | 4939 | if (ata_is_ncq(prot)) { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4940 | WARN_ON(link->sactive & (1 << qc->tag)); |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 4941 | |
| 4942 | if (!link->sactive) |
| 4943 | ap->nr_active_links++; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4944 | link->sactive |= 1 << qc->tag; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4945 | } else { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4946 | WARN_ON(link->sactive); |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 4947 | |
| 4948 | ap->nr_active_links++; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4949 | link->active_tag = qc->tag; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4950 | } |
| 4951 | |
Tejun Heo | e4a70e7 | 2006-03-31 20:36:47 +0900 | [diff] [blame] | 4952 | qc->flags |= ATA_QCFLAG_ACTIVE; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4953 | ap->qc_active |= 1 << qc->tag; |
Tejun Heo | e4a70e7 | 2006-03-31 20:36:47 +0900 | [diff] [blame] | 4954 | |
Tejun Heo | f92a263 | 2007-12-05 16:43:10 +0900 | [diff] [blame] | 4955 | /* We guarantee to LLDs that they will have at least one |
| 4956 | * non-zero sg if the command is a data command. |
| 4957 | */ |
Tejun Heo | ff2aeb1 | 2007-12-05 16:43:11 +0900 | [diff] [blame] | 4958 | 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] | 4959 | |
Tejun Heo | 405e66b | 2007-11-27 19:28:53 +0900 | [diff] [blame] | 4960 | if (ata_is_dma(prot) || (ata_is_pio(prot) && |
Tejun Heo | f92a263 | 2007-12-05 16:43:10 +0900 | [diff] [blame] | 4961 | (ap->flags & ATA_FLAG_PIO_DMA))) |
Tejun Heo | 001102d | 2007-12-05 16:43:09 +0900 | [diff] [blame] | 4962 | if (ata_sg_setup(qc)) |
| 4963 | goto sg_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4964 | |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 4965 | /* if device is sleeping, schedule reset and abort the link */ |
Tejun Heo | 054a5fb | 2007-10-25 18:30:36 +0900 | [diff] [blame] | 4966 | if (unlikely(qc->dev->flags & ATA_DFLAG_SLEEPING)) { |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 4967 | link->eh_info.action |= ATA_EH_RESET; |
Tejun Heo | 054a5fb | 2007-10-25 18:30:36 +0900 | [diff] [blame] | 4968 | ata_ehi_push_desc(&link->eh_info, "waking up from sleep"); |
| 4969 | ata_link_abort(link); |
| 4970 | return; |
| 4971 | } |
| 4972 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4973 | ap->ops->qc_prep(qc); |
| 4974 | |
Tejun Heo | 8e0e694 | 2006-03-31 20:41:11 +0900 | [diff] [blame] | 4975 | qc->err_mask |= ap->ops->qc_issue(qc); |
| 4976 | if (unlikely(qc->err_mask)) |
| 4977 | goto err; |
| 4978 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4979 | |
Tejun Heo | 8e436af | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 4980 | sg_err: |
Tejun Heo | 8e0e694 | 2006-03-31 20:41:11 +0900 | [diff] [blame] | 4981 | qc->err_mask |= AC_ERR_SYSTEM; |
| 4982 | err: |
| 4983 | ata_qc_complete(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4984 | } |
| 4985 | |
| 4986 | /** |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4987 | * sata_scr_valid - test whether SCRs are accessible |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4988 | * @link: ATA link to test SCR accessibility for |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4989 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4990 | * Test whether SCRs are accessible for @link. |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4991 | * |
| 4992 | * LOCKING: |
| 4993 | * None. |
| 4994 | * |
| 4995 | * RETURNS: |
| 4996 | * 1 if SCRs are accessible, 0 otherwise. |
| 4997 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 4998 | int sata_scr_valid(struct ata_link *link) |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 4999 | { |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5000 | struct ata_port *ap = link->ap; |
| 5001 | |
Tejun Heo | a16abc0 | 2007-05-21 18:33:47 +0200 | [diff] [blame] | 5002 | return (ap->flags & ATA_FLAG_SATA) && ap->ops->scr_read; |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5003 | } |
| 5004 | |
| 5005 | /** |
| 5006 | * sata_scr_read - read SCR register of the specified port |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5007 | * @link: ATA link to read SCR for |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5008 | * @reg: SCR to read |
| 5009 | * @val: Place to store read value |
| 5010 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5011 | * Read SCR register @reg of @link into *@val. This function is |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5012 | * guaranteed to succeed if @link is ap->link, the cable type of |
| 5013 | * the port is SATA and the port implements ->scr_read. |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5014 | * |
| 5015 | * LOCKING: |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5016 | * None if @link is ap->link. Kernel thread context otherwise. |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5017 | * |
| 5018 | * RETURNS: |
| 5019 | * 0 on success, negative errno on failure. |
| 5020 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5021 | int sata_scr_read(struct ata_link *link, int reg, u32 *val) |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5022 | { |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5023 | if (ata_is_host_link(link)) { |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5024 | if (sata_scr_valid(link)) |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 5025 | return link->ap->ops->scr_read(link, reg, val); |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5026 | return -EOPNOTSUPP; |
| 5027 | } |
| 5028 | |
| 5029 | return sata_pmp_scr_read(link, reg, val); |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5030 | } |
| 5031 | |
| 5032 | /** |
| 5033 | * sata_scr_write - write SCR register of the specified port |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5034 | * @link: ATA link to write SCR for |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5035 | * @reg: SCR to write |
| 5036 | * @val: value to write |
| 5037 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5038 | * Write @val to SCR register @reg of @link. This function is |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5039 | * guaranteed to succeed if @link is ap->link, the cable type of |
| 5040 | * the port is SATA and the port implements ->scr_read. |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5041 | * |
| 5042 | * LOCKING: |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5043 | * None if @link is ap->link. Kernel thread context otherwise. |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5044 | * |
| 5045 | * RETURNS: |
| 5046 | * 0 on success, negative errno on failure. |
| 5047 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5048 | int sata_scr_write(struct ata_link *link, int reg, u32 val) |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5049 | { |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5050 | if (ata_is_host_link(link)) { |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5051 | if (sata_scr_valid(link)) |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 5052 | return link->ap->ops->scr_write(link, reg, val); |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5053 | return -EOPNOTSUPP; |
| 5054 | } |
| 5055 | |
| 5056 | return sata_pmp_scr_write(link, reg, val); |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5057 | } |
| 5058 | |
| 5059 | /** |
| 5060 | * 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] | 5061 | * @link: ATA link to write SCR for |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5062 | * @reg: SCR to write |
| 5063 | * @val: value to write |
| 5064 | * |
| 5065 | * This function is identical to sata_scr_write() except that this |
| 5066 | * function performs flush after writing to the register. |
| 5067 | * |
| 5068 | * LOCKING: |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5069 | * None if @link is ap->link. Kernel thread context otherwise. |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5070 | * |
| 5071 | * RETURNS: |
| 5072 | * 0 on success, negative errno on failure. |
| 5073 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5074 | 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] | 5075 | { |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5076 | if (ata_is_host_link(link)) { |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5077 | int rc; |
Tejun Heo | da3dbb1 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 5078 | |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5079 | if (sata_scr_valid(link)) { |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 5080 | rc = link->ap->ops->scr_write(link, reg, val); |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5081 | if (rc == 0) |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 5082 | rc = link->ap->ops->scr_read(link, reg, &val); |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5083 | return rc; |
| 5084 | } |
| 5085 | return -EOPNOTSUPP; |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5086 | } |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5087 | |
| 5088 | return sata_pmp_scr_write(link, reg, val); |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5089 | } |
| 5090 | |
| 5091 | /** |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 5092 | * ata_phys_link_online - test whether the given link is online |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5093 | * @link: ATA link to test |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5094 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5095 | * Test whether @link is online. Note that this function returns |
| 5096 | * 0 if online status of @link cannot be obtained, so |
| 5097 | * ata_link_online(link) != !ata_link_offline(link). |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5098 | * |
| 5099 | * LOCKING: |
| 5100 | * None. |
| 5101 | * |
| 5102 | * RETURNS: |
Tejun Heo | b5b3fa3 | 2008-07-31 17:02:42 +0900 | [diff] [blame] | 5103 | * True if the port online status is available and online. |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5104 | */ |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 5105 | bool ata_phys_link_online(struct ata_link *link) |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5106 | { |
| 5107 | u32 sstatus; |
| 5108 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5109 | if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0 && |
| 5110 | (sstatus & 0xf) == 0x3) |
Tejun Heo | b5b3fa3 | 2008-07-31 17:02:42 +0900 | [diff] [blame] | 5111 | return true; |
| 5112 | return false; |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5113 | } |
| 5114 | |
| 5115 | /** |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 5116 | * ata_phys_link_offline - test whether the given link is offline |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5117 | * @link: ATA link to test |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5118 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5119 | * Test whether @link is offline. Note that this function |
| 5120 | * returns 0 if offline status of @link cannot be obtained, so |
| 5121 | * ata_link_online(link) != !ata_link_offline(link). |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5122 | * |
| 5123 | * LOCKING: |
| 5124 | * None. |
| 5125 | * |
| 5126 | * RETURNS: |
Tejun Heo | b5b3fa3 | 2008-07-31 17:02:42 +0900 | [diff] [blame] | 5127 | * True if the port offline status is available and offline. |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5128 | */ |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 5129 | bool ata_phys_link_offline(struct ata_link *link) |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5130 | { |
| 5131 | u32 sstatus; |
| 5132 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5133 | if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0 && |
| 5134 | (sstatus & 0xf) != 0x3) |
Tejun Heo | b5b3fa3 | 2008-07-31 17:02:42 +0900 | [diff] [blame] | 5135 | return true; |
| 5136 | return false; |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5137 | } |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 5138 | |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 5139 | /** |
| 5140 | * ata_link_online - test whether the given link is online |
| 5141 | * @link: ATA link to test |
| 5142 | * |
| 5143 | * Test whether @link is online. This is identical to |
| 5144 | * ata_phys_link_online() when there's no slave link. When |
| 5145 | * there's a slave link, this function should only be called on |
| 5146 | * the master link and will return true if any of M/S links is |
| 5147 | * online. |
| 5148 | * |
| 5149 | * LOCKING: |
| 5150 | * None. |
| 5151 | * |
| 5152 | * RETURNS: |
| 5153 | * True if the port online status is available and online. |
| 5154 | */ |
| 5155 | bool ata_link_online(struct ata_link *link) |
| 5156 | { |
| 5157 | struct ata_link *slave = link->ap->slave_link; |
| 5158 | |
| 5159 | WARN_ON(link == slave); /* shouldn't be called on slave link */ |
| 5160 | |
| 5161 | return ata_phys_link_online(link) || |
| 5162 | (slave && ata_phys_link_online(slave)); |
| 5163 | } |
| 5164 | |
| 5165 | /** |
| 5166 | * ata_link_offline - test whether the given link is offline |
| 5167 | * @link: ATA link to test |
| 5168 | * |
| 5169 | * Test whether @link is offline. This is identical to |
| 5170 | * ata_phys_link_offline() when there's no slave link. When |
| 5171 | * there's a slave link, this function should only be called on |
| 5172 | * the master link and will return true if both M/S links are |
| 5173 | * offline. |
| 5174 | * |
| 5175 | * LOCKING: |
| 5176 | * None. |
| 5177 | * |
| 5178 | * RETURNS: |
| 5179 | * True if the port offline status is available and offline. |
| 5180 | */ |
| 5181 | bool ata_link_offline(struct ata_link *link) |
| 5182 | { |
| 5183 | struct ata_link *slave = link->ap->slave_link; |
| 5184 | |
| 5185 | WARN_ON(link == slave); /* shouldn't be called on slave link */ |
| 5186 | |
| 5187 | return ata_phys_link_offline(link) && |
| 5188 | (!slave || ata_phys_link_offline(slave)); |
| 5189 | } |
| 5190 | |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 5191 | #ifdef CONFIG_PM |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5192 | static int ata_host_request_pm(struct ata_host *host, pm_message_t mesg, |
| 5193 | unsigned int action, unsigned int ehi_flags, |
| 5194 | int wait) |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5195 | { |
| 5196 | unsigned long flags; |
| 5197 | int i, rc; |
| 5198 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5199 | for (i = 0; i < host->n_ports; i++) { |
| 5200 | struct ata_port *ap = host->ports[i]; |
Tejun Heo | e3667eb | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 5201 | struct ata_link *link; |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5202 | |
| 5203 | /* Previous resume operation might still be in |
| 5204 | * progress. Wait for PM_PENDING to clear. |
| 5205 | */ |
| 5206 | if (ap->pflags & ATA_PFLAG_PM_PENDING) { |
| 5207 | ata_port_wait_eh(ap); |
| 5208 | WARN_ON(ap->pflags & ATA_PFLAG_PM_PENDING); |
| 5209 | } |
| 5210 | |
| 5211 | /* request PM ops to EH */ |
| 5212 | spin_lock_irqsave(ap->lock, flags); |
| 5213 | |
| 5214 | ap->pm_mesg = mesg; |
| 5215 | if (wait) { |
| 5216 | rc = 0; |
| 5217 | ap->pm_result = &rc; |
| 5218 | } |
| 5219 | |
| 5220 | ap->pflags |= ATA_PFLAG_PM_PENDING; |
Tejun Heo | e3667eb | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 5221 | __ata_port_for_each_link(link, ap) { |
| 5222 | link->eh_info.action |= action; |
| 5223 | link->eh_info.flags |= ehi_flags; |
| 5224 | } |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5225 | |
| 5226 | ata_port_schedule_eh(ap); |
| 5227 | |
| 5228 | spin_unlock_irqrestore(ap->lock, flags); |
| 5229 | |
| 5230 | /* wait and check result */ |
| 5231 | if (wait) { |
| 5232 | ata_port_wait_eh(ap); |
| 5233 | WARN_ON(ap->pflags & ATA_PFLAG_PM_PENDING); |
| 5234 | if (rc) |
| 5235 | return rc; |
| 5236 | } |
| 5237 | } |
| 5238 | |
| 5239 | return 0; |
| 5240 | } |
| 5241 | |
| 5242 | /** |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5243 | * ata_host_suspend - suspend host |
| 5244 | * @host: host to suspend |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5245 | * @mesg: PM message |
| 5246 | * |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5247 | * Suspend @host. Actual operation is performed by EH. This |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5248 | * function requests EH to perform PM operations and waits for EH |
| 5249 | * to finish. |
| 5250 | * |
| 5251 | * LOCKING: |
| 5252 | * Kernel thread context (may sleep). |
| 5253 | * |
| 5254 | * RETURNS: |
| 5255 | * 0 on success, -errno on failure. |
| 5256 | */ |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5257 | int ata_host_suspend(struct ata_host *host, pm_message_t mesg) |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5258 | { |
Tejun Heo | 9666f40 | 2007-05-04 21:27:47 +0200 | [diff] [blame] | 5259 | int rc; |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5260 | |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 5261 | /* |
| 5262 | * disable link pm on all ports before requesting |
| 5263 | * any pm activity |
| 5264 | */ |
| 5265 | ata_lpm_enable(host); |
| 5266 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5267 | rc = ata_host_request_pm(host, mesg, 0, ATA_EHI_QUIET, 1); |
Jeff Garzik | 72ad6ec | 2008-02-25 17:31:10 -0500 | [diff] [blame] | 5268 | if (rc == 0) |
| 5269 | host->dev->power.power_state = mesg; |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5270 | return rc; |
| 5271 | } |
| 5272 | |
| 5273 | /** |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5274 | * ata_host_resume - resume host |
| 5275 | * @host: host to resume |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5276 | * |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5277 | * Resume @host. Actual operation is performed by EH. This |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5278 | * function requests EH to perform PM operations and returns. |
| 5279 | * Note that all resume operations are performed parallely. |
| 5280 | * |
| 5281 | * LOCKING: |
| 5282 | * Kernel thread context (may sleep). |
| 5283 | */ |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5284 | void ata_host_resume(struct ata_host *host) |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5285 | { |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 5286 | ata_host_request_pm(host, PMSG_ON, ATA_EH_RESET, |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5287 | ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, 0); |
Jeff Garzik | 72ad6ec | 2008-02-25 17:31:10 -0500 | [diff] [blame] | 5288 | host->dev->power.power_state = PMSG_ON; |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 5289 | |
| 5290 | /* reenable link pm */ |
| 5291 | ata_lpm_disable(host); |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5292 | } |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 5293 | #endif |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5294 | |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 5295 | /** |
| 5296 | * ata_port_start - Set port up for dma. |
| 5297 | * @ap: Port to initialize |
| 5298 | * |
| 5299 | * Called just after data structures for each port are |
| 5300 | * initialized. Allocates space for PRD table. |
| 5301 | * |
| 5302 | * May be used as the port_start() entry in ata_port_operations. |
| 5303 | * |
| 5304 | * LOCKING: |
| 5305 | * Inherited from caller. |
| 5306 | */ |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 5307 | int ata_port_start(struct ata_port *ap) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5308 | { |
Brian King | 2f1f610 | 2006-03-23 17:30:15 -0600 | [diff] [blame] | 5309 | struct device *dev = ap->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5310 | |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 5311 | ap->prd = dmam_alloc_coherent(dev, ATA_PRD_TBL_SZ, &ap->prd_dma, |
| 5312 | GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5313 | if (!ap->prd) |
| 5314 | return -ENOMEM; |
| 5315 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5316 | return 0; |
| 5317 | } |
| 5318 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 5319 | /** |
Tejun Heo | 3ef3b43 | 2006-05-31 18:27:30 +0900 | [diff] [blame] | 5320 | * ata_dev_init - Initialize an ata_device structure |
| 5321 | * @dev: Device structure to initialize |
| 5322 | * |
| 5323 | * Initialize @dev in preparation for probing. |
| 5324 | * |
| 5325 | * LOCKING: |
| 5326 | * Inherited from caller. |
| 5327 | */ |
| 5328 | void ata_dev_init(struct ata_device *dev) |
| 5329 | { |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 5330 | struct ata_link *link = ata_dev_phys_link(dev); |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 5331 | struct ata_port *ap = link->ap; |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 5332 | unsigned long flags; |
Tejun Heo | 3ef3b43 | 2006-05-31 18:27:30 +0900 | [diff] [blame] | 5333 | |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 5334 | /* SATA spd limit is bound to the attached device, reset together */ |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 5335 | link->sata_spd_limit = link->hw_sata_spd_limit; |
| 5336 | link->sata_spd = 0; |
Tejun Heo | 5a04bf4 | 2006-05-31 18:27:38 +0900 | [diff] [blame] | 5337 | |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 5338 | /* High bits of dev->flags are used to record warm plug |
| 5339 | * requests which occur asynchronously. Synchronize using |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5340 | * host lock. |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 5341 | */ |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 5342 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 5343 | dev->flags &= ~ATA_DFLAG_INIT_MASK; |
Tejun Heo | 3dcc323 | 2007-09-03 12:20:11 +0900 | [diff] [blame] | 5344 | dev->horkage = 0; |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 5345 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 5346 | |
| 5347 | memset((void *)dev + ATA_DEVICE_CLEAR_OFFSET, 0, |
| 5348 | sizeof(*dev) - ATA_DEVICE_CLEAR_OFFSET); |
Tejun Heo | 3ef3b43 | 2006-05-31 18:27:30 +0900 | [diff] [blame] | 5349 | dev->pio_mask = UINT_MAX; |
| 5350 | dev->mwdma_mask = UINT_MAX; |
| 5351 | dev->udma_mask = UINT_MAX; |
| 5352 | } |
| 5353 | |
| 5354 | /** |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5355 | * ata_link_init - Initialize an ata_link structure |
| 5356 | * @ap: ATA port link is attached to |
| 5357 | * @link: Link structure to initialize |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5358 | * @pmp: Port multiplier port number |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5359 | * |
| 5360 | * Initialize @link. |
| 5361 | * |
| 5362 | * LOCKING: |
| 5363 | * Kernel thread context (may sleep) |
| 5364 | */ |
Tejun Heo | fb7fd61 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 5365 | 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] | 5366 | { |
| 5367 | int i; |
| 5368 | |
| 5369 | /* clear everything except for devices */ |
| 5370 | memset(link, 0, offsetof(struct ata_link, device[0])); |
| 5371 | |
| 5372 | link->ap = ap; |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5373 | link->pmp = pmp; |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5374 | link->active_tag = ATA_TAG_POISON; |
| 5375 | link->hw_sata_spd_limit = UINT_MAX; |
| 5376 | |
| 5377 | /* can't use iterator, ap isn't initialized yet */ |
| 5378 | for (i = 0; i < ATA_MAX_DEVICES; i++) { |
| 5379 | struct ata_device *dev = &link->device[i]; |
| 5380 | |
| 5381 | dev->link = link; |
| 5382 | dev->devno = dev - link->device; |
| 5383 | ata_dev_init(dev); |
| 5384 | } |
| 5385 | } |
| 5386 | |
| 5387 | /** |
| 5388 | * sata_link_init_spd - Initialize link->sata_spd_limit |
| 5389 | * @link: Link to configure sata_spd_limit for |
| 5390 | * |
| 5391 | * Initialize @link->[hw_]sata_spd_limit to the currently |
| 5392 | * configured value. |
| 5393 | * |
| 5394 | * LOCKING: |
| 5395 | * Kernel thread context (may sleep). |
| 5396 | * |
| 5397 | * RETURNS: |
| 5398 | * 0 on success, -errno on failure. |
| 5399 | */ |
Tejun Heo | fb7fd61 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 5400 | int sata_link_init_spd(struct ata_link *link) |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5401 | { |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 5402 | u8 spd; |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5403 | int rc; |
| 5404 | |
Tejun Heo | d127ea7 | 2008-07-31 16:09:34 +0900 | [diff] [blame] | 5405 | rc = sata_scr_read(link, SCR_CONTROL, &link->saved_scontrol); |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5406 | if (rc) |
| 5407 | return rc; |
| 5408 | |
Tejun Heo | d127ea7 | 2008-07-31 16:09:34 +0900 | [diff] [blame] | 5409 | spd = (link->saved_scontrol >> 4) & 0xf; |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5410 | if (spd) |
| 5411 | link->hw_sata_spd_limit &= (1 << spd) - 1; |
| 5412 | |
Tejun Heo | 05944bd | 2008-08-13 20:19:09 +0900 | [diff] [blame] | 5413 | ata_force_link_limits(link); |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 5414 | |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5415 | link->sata_spd_limit = link->hw_sata_spd_limit; |
| 5416 | |
| 5417 | return 0; |
| 5418 | } |
| 5419 | |
| 5420 | /** |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5421 | * ata_port_alloc - allocate and initialize basic ATA port resources |
| 5422 | * @host: ATA host this allocated port belongs to |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5423 | * |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5424 | * Allocate and initialize basic ATA port resources. |
| 5425 | * |
| 5426 | * RETURNS: |
| 5427 | * Allocate ATA port on success, NULL on failure. |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 5428 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5429 | * LOCKING: |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5430 | * Inherited from calling layer (may sleep). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5431 | */ |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5432 | struct ata_port *ata_port_alloc(struct ata_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5433 | { |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5434 | struct ata_port *ap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5435 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5436 | DPRINTK("ENTER\n"); |
| 5437 | |
| 5438 | ap = kzalloc(sizeof(*ap), GFP_KERNEL); |
| 5439 | if (!ap) |
| 5440 | return NULL; |
| 5441 | |
Tejun Heo | f4d6d00 | 2007-05-01 11:50:15 +0200 | [diff] [blame] | 5442 | ap->pflags |= ATA_PFLAG_INITIALIZING; |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5443 | ap->lock = &host->lock; |
Tejun Heo | 198e0fe | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 5444 | ap->flags = ATA_FLAG_DISABLED; |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5445 | ap->print_id = -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5446 | ap->ctl = ATA_DEVCTL_OBS; |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5447 | ap->host = host; |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5448 | ap->dev = host->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5449 | ap->last_ctl = 0xFF; |
Borislav Petkov | bd5d825 | 2006-06-11 23:17:01 -0400 | [diff] [blame] | 5450 | |
| 5451 | #if defined(ATA_VERBOSE_DEBUG) |
| 5452 | /* turn on all debugging levels */ |
| 5453 | ap->msg_enable = 0x00FF; |
| 5454 | #elif defined(ATA_DEBUG) |
| 5455 | 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] | 5456 | #else |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 5457 | ap->msg_enable = ATA_MSG_DRV | ATA_MSG_ERR | ATA_MSG_WARN; |
Borislav Petkov | bd5d825 | 2006-06-11 23:17:01 -0400 | [diff] [blame] | 5458 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5459 | |
Tejun Heo | 127102a | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 5460 | #ifdef CONFIG_ATA_SFF |
Jeff Garzik | 442eacc | 2007-12-19 04:25:10 -0500 | [diff] [blame] | 5461 | INIT_DELAYED_WORK(&ap->port_task, ata_pio_task); |
Tejun Heo | f667fdb | 2008-10-20 13:11:56 +0900 | [diff] [blame] | 5462 | #else |
| 5463 | INIT_DELAYED_WORK(&ap->port_task, NULL); |
Tejun Heo | 127102a | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 5464 | #endif |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 5465 | INIT_DELAYED_WORK(&ap->hotplug_task, ata_scsi_hotplug); |
| 5466 | INIT_WORK(&ap->scsi_rescan_task, ata_scsi_dev_rescan); |
Tejun Heo | a72ec4c | 2006-01-23 13:09:37 +0900 | [diff] [blame] | 5467 | INIT_LIST_HEAD(&ap->eh_done_q); |
Tejun Heo | c6cf9e9 | 2006-05-31 18:27:27 +0900 | [diff] [blame] | 5468 | init_waitqueue_head(&ap->eh_wait_q); |
Elias Oltmanns | 45fabbb | 2008-09-21 11:54:08 +0200 | [diff] [blame] | 5469 | init_completion(&ap->park_req_pending); |
Tejun Heo | 5ddf24c | 2007-07-16 14:29:41 +0900 | [diff] [blame] | 5470 | init_timer_deferrable(&ap->fastdrain_timer); |
| 5471 | ap->fastdrain_timer.function = ata_eh_fastdrain_timerfn; |
| 5472 | ap->fastdrain_timer.data = (unsigned long)ap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5473 | |
Tejun Heo | 838df62 | 2006-05-15 20:57:44 +0900 | [diff] [blame] | 5474 | ap->cbl = ATA_CBL_NONE; |
Tejun Heo | 838df62 | 2006-05-15 20:57:44 +0900 | [diff] [blame] | 5475 | |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5476 | ata_link_init(ap, &ap->link, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5477 | |
| 5478 | #ifdef ATA_IRQ_TRAP |
| 5479 | ap->stats.unhandled_irq = 1; |
| 5480 | ap->stats.idle_irq = 1; |
| 5481 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5482 | return ap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5483 | } |
| 5484 | |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 5485 | static void ata_host_release(struct device *gendev, void *res) |
| 5486 | { |
| 5487 | struct ata_host *host = dev_get_drvdata(gendev); |
| 5488 | int i; |
| 5489 | |
| 5490 | for (i = 0; i < host->n_ports; i++) { |
| 5491 | struct ata_port *ap = host->ports[i]; |
| 5492 | |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5493 | if (!ap) |
| 5494 | continue; |
| 5495 | |
Tejun Heo | 4911487 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5496 | if (ap->scsi_host) |
Tejun Heo | 1aa506e | 2007-03-09 19:36:12 +0900 | [diff] [blame] | 5497 | scsi_host_put(ap->scsi_host); |
| 5498 | |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5499 | kfree(ap->pmp_link); |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 5500 | kfree(ap->slave_link); |
Tejun Heo | 4911487 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5501 | kfree(ap); |
Tejun Heo | 1aa506e | 2007-03-09 19:36:12 +0900 | [diff] [blame] | 5502 | host->ports[i] = NULL; |
| 5503 | } |
| 5504 | |
Tejun Heo | 1aa56cc | 2007-02-27 22:33:21 +0900 | [diff] [blame] | 5505 | dev_set_drvdata(gendev, NULL); |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 5506 | } |
| 5507 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5508 | /** |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5509 | * ata_host_alloc - allocate and init basic ATA host resources |
| 5510 | * @dev: generic device this host is associated with |
| 5511 | * @max_ports: maximum number of ATA ports associated with this host |
| 5512 | * |
| 5513 | * Allocate and initialize basic ATA host resources. LLD calls |
| 5514 | * this function to allocate a host, initializes it fully and |
| 5515 | * attaches it using ata_host_register(). |
| 5516 | * |
| 5517 | * @max_ports ports are allocated and host->n_ports is |
| 5518 | * initialized to @max_ports. The caller is allowed to decrease |
| 5519 | * host->n_ports before calling ata_host_register(). The unused |
| 5520 | * ports will be automatically freed on registration. |
| 5521 | * |
| 5522 | * RETURNS: |
| 5523 | * Allocate ATA host on success, NULL on failure. |
| 5524 | * |
| 5525 | * LOCKING: |
| 5526 | * Inherited from calling layer (may sleep). |
| 5527 | */ |
| 5528 | struct ata_host *ata_host_alloc(struct device *dev, int max_ports) |
| 5529 | { |
| 5530 | struct ata_host *host; |
| 5531 | size_t sz; |
| 5532 | int i; |
| 5533 | |
| 5534 | DPRINTK("ENTER\n"); |
| 5535 | |
| 5536 | if (!devres_open_group(dev, NULL, GFP_KERNEL)) |
| 5537 | return NULL; |
| 5538 | |
| 5539 | /* alloc a container for our list of ATA ports (buses) */ |
| 5540 | sz = sizeof(struct ata_host) + (max_ports + 1) * sizeof(void *); |
| 5541 | /* alloc a container for our list of ATA ports (buses) */ |
| 5542 | host = devres_alloc(ata_host_release, sz, GFP_KERNEL); |
| 5543 | if (!host) |
| 5544 | goto err_out; |
| 5545 | |
| 5546 | devres_add(dev, host); |
| 5547 | dev_set_drvdata(dev, host); |
| 5548 | |
| 5549 | spin_lock_init(&host->lock); |
| 5550 | host->dev = dev; |
| 5551 | host->n_ports = max_ports; |
| 5552 | |
| 5553 | /* allocate ports bound to this host */ |
| 5554 | for (i = 0; i < max_ports; i++) { |
| 5555 | struct ata_port *ap; |
| 5556 | |
| 5557 | ap = ata_port_alloc(host); |
| 5558 | if (!ap) |
| 5559 | goto err_out; |
| 5560 | |
| 5561 | ap->port_no = i; |
| 5562 | host->ports[i] = ap; |
| 5563 | } |
| 5564 | |
| 5565 | devres_remove_group(dev, NULL); |
| 5566 | return host; |
| 5567 | |
| 5568 | err_out: |
| 5569 | devres_release_group(dev, NULL); |
| 5570 | return NULL; |
| 5571 | } |
| 5572 | |
| 5573 | /** |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5574 | * ata_host_alloc_pinfo - alloc host and init with port_info array |
| 5575 | * @dev: generic device this host is associated with |
| 5576 | * @ppi: array of ATA port_info to initialize host with |
| 5577 | * @n_ports: number of ATA ports attached to this host |
| 5578 | * |
| 5579 | * Allocate ATA host and initialize with info from @ppi. If NULL |
| 5580 | * terminated, @ppi may contain fewer entries than @n_ports. The |
| 5581 | * last entry will be used for the remaining ports. |
| 5582 | * |
| 5583 | * RETURNS: |
| 5584 | * Allocate ATA host on success, NULL on failure. |
| 5585 | * |
| 5586 | * LOCKING: |
| 5587 | * Inherited from calling layer (may sleep). |
| 5588 | */ |
| 5589 | struct ata_host *ata_host_alloc_pinfo(struct device *dev, |
| 5590 | const struct ata_port_info * const * ppi, |
| 5591 | int n_ports) |
| 5592 | { |
| 5593 | const struct ata_port_info *pi; |
| 5594 | struct ata_host *host; |
| 5595 | int i, j; |
| 5596 | |
| 5597 | host = ata_host_alloc(dev, n_ports); |
| 5598 | if (!host) |
| 5599 | return NULL; |
| 5600 | |
| 5601 | for (i = 0, j = 0, pi = NULL; i < host->n_ports; i++) { |
| 5602 | struct ata_port *ap = host->ports[i]; |
| 5603 | |
| 5604 | if (ppi[j]) |
| 5605 | pi = ppi[j++]; |
| 5606 | |
| 5607 | ap->pio_mask = pi->pio_mask; |
| 5608 | ap->mwdma_mask = pi->mwdma_mask; |
| 5609 | ap->udma_mask = pi->udma_mask; |
| 5610 | ap->flags |= pi->flags; |
Tejun Heo | 0c88758 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5611 | ap->link.flags |= pi->link_flags; |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5612 | ap->ops = pi->port_ops; |
| 5613 | |
| 5614 | if (!host->ops && (pi->port_ops != &ata_dummy_port_ops)) |
| 5615 | host->ops = pi->port_ops; |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5616 | } |
| 5617 | |
| 5618 | return host; |
| 5619 | } |
| 5620 | |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 5621 | /** |
| 5622 | * ata_slave_link_init - initialize slave link |
| 5623 | * @ap: port to initialize slave link for |
| 5624 | * |
| 5625 | * Create and initialize slave link for @ap. This enables slave |
| 5626 | * link handling on the port. |
| 5627 | * |
| 5628 | * In libata, a port contains links and a link contains devices. |
| 5629 | * There is single host link but if a PMP is attached to it, |
| 5630 | * there can be multiple fan-out links. On SATA, there's usually |
| 5631 | * a single device connected to a link but PATA and SATA |
| 5632 | * controllers emulating TF based interface can have two - master |
| 5633 | * and slave. |
| 5634 | * |
| 5635 | * However, there are a few controllers which don't fit into this |
| 5636 | * abstraction too well - SATA controllers which emulate TF |
| 5637 | * interface with both master and slave devices but also have |
| 5638 | * separate SCR register sets for each device. These controllers |
| 5639 | * need separate links for physical link handling |
| 5640 | * (e.g. onlineness, link speed) but should be treated like a |
| 5641 | * traditional M/S controller for everything else (e.g. command |
| 5642 | * issue, softreset). |
| 5643 | * |
| 5644 | * slave_link is libata's way of handling this class of |
| 5645 | * controllers without impacting core layer too much. For |
| 5646 | * anything other than physical link handling, the default host |
| 5647 | * link is used for both master and slave. For physical link |
| 5648 | * handling, separate @ap->slave_link is used. All dirty details |
| 5649 | * are implemented inside libata core layer. From LLD's POV, the |
| 5650 | * only difference is that prereset, hardreset and postreset are |
| 5651 | * called once more for the slave link, so the reset sequence |
| 5652 | * looks like the following. |
| 5653 | * |
| 5654 | * prereset(M) -> prereset(S) -> hardreset(M) -> hardreset(S) -> |
| 5655 | * softreset(M) -> postreset(M) -> postreset(S) |
| 5656 | * |
| 5657 | * Note that softreset is called only for the master. Softreset |
| 5658 | * resets both M/S by definition, so SRST on master should handle |
| 5659 | * both (the standard method will work just fine). |
| 5660 | * |
| 5661 | * LOCKING: |
| 5662 | * Should be called before host is registered. |
| 5663 | * |
| 5664 | * RETURNS: |
| 5665 | * 0 on success, -errno on failure. |
| 5666 | */ |
| 5667 | int ata_slave_link_init(struct ata_port *ap) |
| 5668 | { |
| 5669 | struct ata_link *link; |
| 5670 | |
| 5671 | WARN_ON(ap->slave_link); |
| 5672 | WARN_ON(ap->flags & ATA_FLAG_PMP); |
| 5673 | |
| 5674 | link = kzalloc(sizeof(*link), GFP_KERNEL); |
| 5675 | if (!link) |
| 5676 | return -ENOMEM; |
| 5677 | |
| 5678 | ata_link_init(ap, link, 1); |
| 5679 | ap->slave_link = link; |
| 5680 | return 0; |
| 5681 | } |
| 5682 | |
Tejun Heo | 32ebbc0 | 2007-11-08 13:09:00 +0900 | [diff] [blame] | 5683 | static void ata_host_stop(struct device *gendev, void *res) |
| 5684 | { |
| 5685 | struct ata_host *host = dev_get_drvdata(gendev); |
| 5686 | int i; |
| 5687 | |
| 5688 | WARN_ON(!(host->flags & ATA_HOST_STARTED)); |
| 5689 | |
| 5690 | for (i = 0; i < host->n_ports; i++) { |
| 5691 | struct ata_port *ap = host->ports[i]; |
| 5692 | |
| 5693 | if (ap->ops->port_stop) |
| 5694 | ap->ops->port_stop(ap); |
| 5695 | } |
| 5696 | |
| 5697 | if (host->ops->host_stop) |
| 5698 | host->ops->host_stop(host); |
| 5699 | } |
| 5700 | |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5701 | /** |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 5702 | * ata_finalize_port_ops - finalize ata_port_operations |
| 5703 | * @ops: ata_port_operations to finalize |
| 5704 | * |
| 5705 | * An ata_port_operations can inherit from another ops and that |
| 5706 | * ops can again inherit from another. This can go on as many |
| 5707 | * times as necessary as long as there is no loop in the |
| 5708 | * inheritance chain. |
| 5709 | * |
| 5710 | * Ops tables are finalized when the host is started. NULL or |
| 5711 | * unspecified entries are inherited from the closet ancestor |
| 5712 | * which has the method and the entry is populated with it. |
| 5713 | * After finalization, the ops table directly points to all the |
| 5714 | * methods and ->inherits is no longer necessary and cleared. |
| 5715 | * |
| 5716 | * Using ATA_OP_NULL, inheriting ops can force a method to NULL. |
| 5717 | * |
| 5718 | * LOCKING: |
| 5719 | * None. |
| 5720 | */ |
| 5721 | static void ata_finalize_port_ops(struct ata_port_operations *ops) |
| 5722 | { |
Pradeep Singh Rautela | 2da6765 | 2008-05-29 23:28:14 +0530 | [diff] [blame] | 5723 | static DEFINE_SPINLOCK(lock); |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 5724 | const struct ata_port_operations *cur; |
| 5725 | void **begin = (void **)ops; |
| 5726 | void **end = (void **)&ops->inherits; |
| 5727 | void **pp; |
| 5728 | |
| 5729 | if (!ops || !ops->inherits) |
| 5730 | return; |
| 5731 | |
| 5732 | spin_lock(&lock); |
| 5733 | |
| 5734 | for (cur = ops->inherits; cur; cur = cur->inherits) { |
| 5735 | void **inherit = (void **)cur; |
| 5736 | |
| 5737 | for (pp = begin; pp < end; pp++, inherit++) |
| 5738 | if (!*pp) |
| 5739 | *pp = *inherit; |
| 5740 | } |
| 5741 | |
| 5742 | for (pp = begin; pp < end; pp++) |
| 5743 | if (IS_ERR(*pp)) |
| 5744 | *pp = NULL; |
| 5745 | |
| 5746 | ops->inherits = NULL; |
| 5747 | |
| 5748 | spin_unlock(&lock); |
| 5749 | } |
| 5750 | |
| 5751 | /** |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5752 | * ata_host_start - start and freeze ports of an ATA host |
| 5753 | * @host: ATA host to start ports for |
| 5754 | * |
| 5755 | * Start and then freeze ports of @host. Started status is |
| 5756 | * recorded in host->flags, so this function can be called |
| 5757 | * multiple times. Ports are guaranteed to get started only |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5758 | * once. If host->ops isn't initialized yet, its set to the |
| 5759 | * first non-dummy port ops. |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5760 | * |
| 5761 | * LOCKING: |
| 5762 | * Inherited from calling layer (may sleep). |
| 5763 | * |
| 5764 | * RETURNS: |
| 5765 | * 0 if all ports are started successfully, -errno otherwise. |
| 5766 | */ |
| 5767 | int ata_host_start(struct ata_host *host) |
| 5768 | { |
Tejun Heo | 32ebbc0 | 2007-11-08 13:09:00 +0900 | [diff] [blame] | 5769 | int have_stop = 0; |
| 5770 | void *start_dr = NULL; |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5771 | int i, rc; |
| 5772 | |
| 5773 | if (host->flags & ATA_HOST_STARTED) |
| 5774 | return 0; |
| 5775 | |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 5776 | ata_finalize_port_ops(host->ops); |
| 5777 | |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5778 | for (i = 0; i < host->n_ports; i++) { |
| 5779 | struct ata_port *ap = host->ports[i]; |
| 5780 | |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 5781 | ata_finalize_port_ops(ap->ops); |
| 5782 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5783 | if (!host->ops && !ata_port_is_dummy(ap)) |
| 5784 | host->ops = ap->ops; |
| 5785 | |
Tejun Heo | 32ebbc0 | 2007-11-08 13:09:00 +0900 | [diff] [blame] | 5786 | if (ap->ops->port_stop) |
| 5787 | have_stop = 1; |
| 5788 | } |
| 5789 | |
| 5790 | if (host->ops->host_stop) |
| 5791 | have_stop = 1; |
| 5792 | |
| 5793 | if (have_stop) { |
| 5794 | start_dr = devres_alloc(ata_host_stop, 0, GFP_KERNEL); |
| 5795 | if (!start_dr) |
| 5796 | return -ENOMEM; |
| 5797 | } |
| 5798 | |
| 5799 | for (i = 0; i < host->n_ports; i++) { |
| 5800 | struct ata_port *ap = host->ports[i]; |
| 5801 | |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5802 | if (ap->ops->port_start) { |
| 5803 | rc = ap->ops->port_start(ap); |
| 5804 | if (rc) { |
Alan Cox | 0f9fe9b | 2007-11-30 15:23:16 +0000 | [diff] [blame] | 5805 | if (rc != -ENODEV) |
Andrew Morton | 0f75774 | 2008-01-10 14:33:09 -0800 | [diff] [blame] | 5806 | dev_printk(KERN_ERR, host->dev, |
| 5807 | "failed to start port %d " |
| 5808 | "(errno=%d)\n", i, rc); |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5809 | goto err_out; |
| 5810 | } |
| 5811 | } |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5812 | ata_eh_freeze_port(ap); |
| 5813 | } |
| 5814 | |
Tejun Heo | 32ebbc0 | 2007-11-08 13:09:00 +0900 | [diff] [blame] | 5815 | if (start_dr) |
| 5816 | devres_add(host->dev, start_dr); |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5817 | host->flags |= ATA_HOST_STARTED; |
| 5818 | return 0; |
| 5819 | |
| 5820 | err_out: |
| 5821 | while (--i >= 0) { |
| 5822 | struct ata_port *ap = host->ports[i]; |
| 5823 | |
| 5824 | if (ap->ops->port_stop) |
| 5825 | ap->ops->port_stop(ap); |
| 5826 | } |
Tejun Heo | 32ebbc0 | 2007-11-08 13:09:00 +0900 | [diff] [blame] | 5827 | devres_free(start_dr); |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5828 | return rc; |
| 5829 | } |
| 5830 | |
| 5831 | /** |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5832 | * ata_sas_host_init - Initialize a host struct |
| 5833 | * @host: host to initialize |
| 5834 | * @dev: device host is attached to |
| 5835 | * @flags: host flags |
| 5836 | * @ops: port_ops |
Brian King | b03732f | 2006-08-07 14:27:10 -0500 | [diff] [blame] | 5837 | * |
| 5838 | * LOCKING: |
| 5839 | * PCI/etc. bus probe sem. |
| 5840 | * |
| 5841 | */ |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5842 | /* KILLME - the only user left is ipr */ |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5843 | void ata_host_init(struct ata_host *host, struct device *dev, |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 5844 | unsigned long flags, struct ata_port_operations *ops) |
Brian King | b03732f | 2006-08-07 14:27:10 -0500 | [diff] [blame] | 5845 | { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5846 | spin_lock_init(&host->lock); |
| 5847 | host->dev = dev; |
| 5848 | host->flags = flags; |
| 5849 | host->ops = ops; |
Brian King | b03732f | 2006-08-07 14:27:10 -0500 | [diff] [blame] | 5850 | } |
| 5851 | |
| 5852 | /** |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5853 | * ata_host_register - register initialized ATA host |
| 5854 | * @host: ATA host to register |
| 5855 | * @sht: template for SCSI host |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 5856 | * |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5857 | * Register initialized ATA host. @host is allocated using |
| 5858 | * ata_host_alloc() and fully initialized by LLD. This function |
| 5859 | * starts ports, registers @host with ATA and SCSI layers and |
| 5860 | * probe registered devices. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5861 | * |
| 5862 | * LOCKING: |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5863 | * Inherited from calling layer (may sleep). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5864 | * |
| 5865 | * RETURNS: |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5866 | * 0 on success, -errno otherwise. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5867 | */ |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5868 | 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] | 5869 | { |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5870 | int i, rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5871 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5872 | /* host must have been started */ |
| 5873 | if (!(host->flags & ATA_HOST_STARTED)) { |
| 5874 | dev_printk(KERN_ERR, host->dev, |
| 5875 | "BUG: trying to register unstarted host\n"); |
| 5876 | WARN_ON(1); |
| 5877 | return -EINVAL; |
Alan Cox | 02f076a | 2006-09-26 17:35:32 +0100 | [diff] [blame] | 5878 | } |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 5879 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5880 | /* Blow away unused ports. This happens when LLD can't |
| 5881 | * determine the exact number of ports to allocate at |
| 5882 | * allocation time. |
| 5883 | */ |
| 5884 | for (i = host->n_ports; host->ports[i]; i++) |
| 5885 | kfree(host->ports[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5886 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5887 | /* give ports names and add SCSI hosts */ |
| 5888 | for (i = 0; i < host->n_ports; i++) |
| 5889 | host->ports[i]->print_id = ata_print_id++; |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 5890 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5891 | rc = ata_scsi_add_hosts(host, sht); |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5892 | if (rc) |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5893 | return rc; |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5894 | |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 5895 | /* associate with ACPI nodes */ |
| 5896 | ata_acpi_associate(host); |
| 5897 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5898 | /* set cable, sata_spd_limit and report */ |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5899 | for (i = 0; i < host->n_ports; i++) { |
| 5900 | struct ata_port *ap = host->ports[i]; |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5901 | unsigned long xfer_mask; |
| 5902 | |
| 5903 | /* set SATA cable type if still unset */ |
| 5904 | if (ap->cbl == ATA_CBL_NONE && (ap->flags & ATA_FLAG_SATA)) |
| 5905 | ap->cbl = ATA_CBL_SATA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5906 | |
Tejun Heo | 5a04bf4 | 2006-05-31 18:27:38 +0900 | [diff] [blame] | 5907 | /* init sata_spd_limit to the current value */ |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5908 | sata_link_init_spd(&ap->link); |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 5909 | if (ap->slave_link) |
| 5910 | sata_link_init_spd(ap->slave_link); |
Tejun Heo | 5a04bf4 | 2006-05-31 18:27:38 +0900 | [diff] [blame] | 5911 | |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 5912 | /* print per-port info to dmesg */ |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5913 | xfer_mask = ata_pack_xfermask(ap->pio_mask, ap->mwdma_mask, |
| 5914 | ap->udma_mask); |
| 5915 | |
Tejun Heo | abf6e8e | 2007-10-09 14:57:25 +0900 | [diff] [blame] | 5916 | if (!ata_port_is_dummy(ap)) { |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 5917 | ata_port_printk(ap, KERN_INFO, |
| 5918 | "%cATA max %s %s\n", |
Tejun Heo | a16abc0 | 2007-05-21 18:33:47 +0200 | [diff] [blame] | 5919 | (ap->flags & ATA_FLAG_SATA) ? 'S' : 'P', |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5920 | ata_mode_string(xfer_mask), |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 5921 | ap->link.eh_info.desc); |
Tejun Heo | abf6e8e | 2007-10-09 14:57:25 +0900 | [diff] [blame] | 5922 | ata_ehi_clear_desc(&ap->link.eh_info); |
| 5923 | } else |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5924 | ata_port_printk(ap, KERN_INFO, "DUMMY\n"); |
| 5925 | } |
| 5926 | |
| 5927 | /* perform each probe synchronously */ |
| 5928 | DPRINTK("probe begin\n"); |
| 5929 | for (i = 0; i < host->n_ports; i++) { |
| 5930 | struct ata_port *ap = host->ports[i]; |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5931 | |
| 5932 | /* probe */ |
Tejun Heo | 52783c5 | 2006-05-31 18:28:22 +0900 | [diff] [blame] | 5933 | if (ap->ops->error_handler) { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 5934 | struct ata_eh_info *ehi = &ap->link.eh_info; |
Tejun Heo | 3e70639 | 2006-05-31 18:28:11 +0900 | [diff] [blame] | 5935 | unsigned long flags; |
| 5936 | |
| 5937 | ata_port_probe(ap); |
| 5938 | |
| 5939 | /* kick EH for boot probing */ |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 5940 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | 3e70639 | 2006-05-31 18:28:11 +0900 | [diff] [blame] | 5941 | |
Tejun Heo | b558edd | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 5942 | ehi->probe_mask |= ATA_ALL_DEVICES; |
Tejun Heo | 391191c | 2008-05-19 01:15:12 +0900 | [diff] [blame] | 5943 | ehi->action |= ATA_EH_RESET | ATA_EH_LPM; |
Tejun Heo | 1cdaf53 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 5944 | ehi->flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET; |
Tejun Heo | 3e70639 | 2006-05-31 18:28:11 +0900 | [diff] [blame] | 5945 | |
Tejun Heo | f4d6d00 | 2007-05-01 11:50:15 +0200 | [diff] [blame] | 5946 | ap->pflags &= ~ATA_PFLAG_INITIALIZING; |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 5947 | ap->pflags |= ATA_PFLAG_LOADING; |
Tejun Heo | 3e70639 | 2006-05-31 18:28:11 +0900 | [diff] [blame] | 5948 | ata_port_schedule_eh(ap); |
| 5949 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 5950 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | 3e70639 | 2006-05-31 18:28:11 +0900 | [diff] [blame] | 5951 | |
| 5952 | /* wait for EH to finish */ |
| 5953 | ata_port_wait_eh(ap); |
| 5954 | } else { |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 5955 | DPRINTK("ata%u: bus probe begin\n", ap->print_id); |
Tejun Heo | 3e70639 | 2006-05-31 18:28:11 +0900 | [diff] [blame] | 5956 | rc = ata_bus_probe(ap); |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 5957 | DPRINTK("ata%u: bus probe end\n", ap->print_id); |
Tejun Heo | 3e70639 | 2006-05-31 18:28:11 +0900 | [diff] [blame] | 5958 | |
| 5959 | if (rc) { |
| 5960 | /* FIXME: do something useful here? |
| 5961 | * Current libata behavior will |
| 5962 | * tear down everything when |
| 5963 | * the module is removed |
| 5964 | * or the h/w is unplugged. |
| 5965 | */ |
| 5966 | } |
| 5967 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5968 | } |
| 5969 | |
| 5970 | /* probes are done, now scan each port's disk(s) */ |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 5971 | DPRINTK("host probe begin\n"); |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5972 | for (i = 0; i < host->n_ports; i++) { |
| 5973 | struct ata_port *ap = host->ports[i]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5974 | |
Tejun Heo | 1ae4631 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 5975 | ata_scsi_scan_host(ap, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5976 | } |
| 5977 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5978 | return 0; |
| 5979 | } |
| 5980 | |
| 5981 | /** |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5982 | * ata_host_activate - start host, request IRQ and register it |
| 5983 | * @host: target ATA host |
| 5984 | * @irq: IRQ to request |
| 5985 | * @irq_handler: irq_handler used when requesting IRQ |
| 5986 | * @irq_flags: irq_flags used when requesting IRQ |
| 5987 | * @sht: scsi_host_template to use when registering the host |
| 5988 | * |
| 5989 | * After allocating an ATA host and initializing it, most libata |
| 5990 | * LLDs perform three steps to activate the host - start host, |
| 5991 | * request IRQ and register it. This helper takes necessasry |
| 5992 | * arguments and performs the three steps in one go. |
| 5993 | * |
Paul Mundt | 3d46b2e | 2007-11-08 11:14:56 +0900 | [diff] [blame] | 5994 | * An invalid IRQ skips the IRQ registration and expects the host to |
| 5995 | * have set polling mode on the port. In this case, @irq_handler |
| 5996 | * should be NULL. |
| 5997 | * |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5998 | * LOCKING: |
| 5999 | * Inherited from calling layer (may sleep). |
| 6000 | * |
| 6001 | * RETURNS: |
| 6002 | * 0 on success, -errno otherwise. |
| 6003 | */ |
| 6004 | int ata_host_activate(struct ata_host *host, int irq, |
| 6005 | irq_handler_t irq_handler, unsigned long irq_flags, |
| 6006 | struct scsi_host_template *sht) |
| 6007 | { |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 6008 | int i, rc; |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6009 | |
| 6010 | rc = ata_host_start(host); |
| 6011 | if (rc) |
| 6012 | return rc; |
| 6013 | |
Paul Mundt | 3d46b2e | 2007-11-08 11:14:56 +0900 | [diff] [blame] | 6014 | /* Special case for polling mode */ |
| 6015 | if (!irq) { |
| 6016 | WARN_ON(irq_handler); |
| 6017 | return ata_host_register(host, sht); |
| 6018 | } |
| 6019 | |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6020 | rc = devm_request_irq(host->dev, irq, irq_handler, irq_flags, |
| 6021 | dev_driver_string(host->dev), host); |
| 6022 | if (rc) |
| 6023 | return rc; |
| 6024 | |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 6025 | for (i = 0; i < host->n_ports; i++) |
| 6026 | ata_port_desc(host->ports[i], "irq %d", irq); |
Tejun Heo | 4031826 | 2007-07-03 01:38:47 +0900 | [diff] [blame] | 6027 | |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6028 | rc = ata_host_register(host, sht); |
| 6029 | /* if failed, just free the IRQ and leave ports alone */ |
| 6030 | if (rc) |
| 6031 | devm_free_irq(host->dev, irq, host); |
| 6032 | |
| 6033 | return rc; |
| 6034 | } |
| 6035 | |
| 6036 | /** |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 6037 | * ata_port_detach - Detach ATA port in prepration of device removal |
| 6038 | * @ap: ATA port to be detached |
| 6039 | * |
| 6040 | * Detach all ATA devices and the associated SCSI devices of @ap; |
| 6041 | * then, remove the associated SCSI host. @ap is guaranteed to |
| 6042 | * be quiescent on return from this function. |
| 6043 | * |
| 6044 | * LOCKING: |
| 6045 | * Kernel thread context (may sleep). |
| 6046 | */ |
Adrian Bunk | 741b776 | 2007-10-24 18:23:06 +0200 | [diff] [blame] | 6047 | static void ata_port_detach(struct ata_port *ap) |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 6048 | { |
| 6049 | unsigned long flags; |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 6050 | struct ata_link *link; |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 6051 | struct ata_device *dev; |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 6052 | |
| 6053 | if (!ap->ops->error_handler) |
Tejun Heo | c3cf30a | 2006-08-05 03:59:11 +0900 | [diff] [blame] | 6054 | goto skip_eh; |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 6055 | |
| 6056 | /* tell EH we're leaving & flush EH */ |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 6057 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 6058 | ap->pflags |= ATA_PFLAG_UNLOADING; |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 6059 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 6060 | |
| 6061 | ata_port_wait_eh(ap); |
| 6062 | |
Tejun Heo | 7f9ad9b | 2007-12-15 15:05:00 +0900 | [diff] [blame] | 6063 | /* EH is now guaranteed to see UNLOADING - EH context belongs |
Tejun Heo | d127ea7 | 2008-07-31 16:09:34 +0900 | [diff] [blame] | 6064 | * to us. Restore SControl and disable all existing devices. |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 6065 | */ |
Tejun Heo | d127ea7 | 2008-07-31 16:09:34 +0900 | [diff] [blame] | 6066 | __ata_port_for_each_link(link, ap) { |
Tejun Heo | 299246f | 2008-11-03 19:27:07 +0900 | [diff] [blame] | 6067 | sata_scr_write(link, SCR_CONTROL, link->saved_scontrol & 0xff0); |
Tejun Heo | 41bda9c | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 6068 | ata_link_for_each_dev(dev, link) |
| 6069 | ata_dev_disable(dev); |
| 6070 | } |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 6071 | |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 6072 | /* Final freeze & EH. All in-flight commands are aborted. EH |
| 6073 | * will be skipped and retrials will be terminated with bad |
| 6074 | * target. |
| 6075 | */ |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 6076 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 6077 | ata_port_freeze(ap); /* won't be thawed */ |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 6078 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 6079 | |
| 6080 | ata_port_wait_eh(ap); |
Oleg Nesterov | 45a66c1 | 2007-07-09 11:46:13 -0700 | [diff] [blame] | 6081 | cancel_rearming_delayed_work(&ap->hotplug_task); |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 6082 | |
Tejun Heo | c3cf30a | 2006-08-05 03:59:11 +0900 | [diff] [blame] | 6083 | skip_eh: |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 6084 | /* remove the associated SCSI host */ |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 6085 | scsi_remove_host(ap->scsi_host); |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 6086 | } |
| 6087 | |
| 6088 | /** |
Tejun Heo | 0529c15 | 2007-01-20 16:00:26 +0900 | [diff] [blame] | 6089 | * ata_host_detach - Detach all ports of an ATA host |
| 6090 | * @host: Host to detach |
| 6091 | * |
| 6092 | * Detach all ports of @host. |
| 6093 | * |
| 6094 | * LOCKING: |
| 6095 | * Kernel thread context (may sleep). |
| 6096 | */ |
| 6097 | void ata_host_detach(struct ata_host *host) |
| 6098 | { |
| 6099 | int i; |
| 6100 | |
| 6101 | for (i = 0; i < host->n_ports; i++) |
| 6102 | ata_port_detach(host->ports[i]); |
Tejun Heo | 562f0c2 | 2007-12-15 15:05:01 +0900 | [diff] [blame] | 6103 | |
| 6104 | /* the host is dead now, dissociate ACPI */ |
| 6105 | ata_acpi_dissociate(host); |
Tejun Heo | 0529c15 | 2007-01-20 16:00:26 +0900 | [diff] [blame] | 6106 | } |
| 6107 | |
Jeff Garzik | 374b187 | 2005-08-30 05:42:52 -0400 | [diff] [blame] | 6108 | #ifdef CONFIG_PCI |
| 6109 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 6110 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6111 | * ata_pci_remove_one - PCI layer callback for device removal |
| 6112 | * @pdev: PCI device that was removed |
| 6113 | * |
Tejun Heo | b878ca5 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 6114 | * PCI layer indicates to libata via this hook that hot-unplug or |
| 6115 | * module unload event has occurred. Detach all ports. Resource |
| 6116 | * release is handled via devres. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6117 | * |
| 6118 | * LOCKING: |
| 6119 | * Inherited from PCI layer (may sleep). |
| 6120 | */ |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 6121 | void ata_pci_remove_one(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6122 | { |
Jeff Garzik | 2855568 | 2007-10-11 17:12:35 -0400 | [diff] [blame] | 6123 | struct device *dev = &pdev->dev; |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 6124 | struct ata_host *host = dev_get_drvdata(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6125 | |
Tejun Heo | b878ca5 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 6126 | ata_host_detach(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6127 | } |
| 6128 | |
| 6129 | /* move to PCI subsystem */ |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 6130 | 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] | 6131 | { |
| 6132 | unsigned long tmp = 0; |
| 6133 | |
| 6134 | switch (bits->width) { |
| 6135 | case 1: { |
| 6136 | u8 tmp8 = 0; |
| 6137 | pci_read_config_byte(pdev, bits->reg, &tmp8); |
| 6138 | tmp = tmp8; |
| 6139 | break; |
| 6140 | } |
| 6141 | case 2: { |
| 6142 | u16 tmp16 = 0; |
| 6143 | pci_read_config_word(pdev, bits->reg, &tmp16); |
| 6144 | tmp = tmp16; |
| 6145 | break; |
| 6146 | } |
| 6147 | case 4: { |
| 6148 | u32 tmp32 = 0; |
| 6149 | pci_read_config_dword(pdev, bits->reg, &tmp32); |
| 6150 | tmp = tmp32; |
| 6151 | break; |
| 6152 | } |
| 6153 | |
| 6154 | default: |
| 6155 | return -EINVAL; |
| 6156 | } |
| 6157 | |
| 6158 | tmp &= bits->mask; |
| 6159 | |
| 6160 | return (tmp == bits->val) ? 1 : 0; |
| 6161 | } |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 6162 | |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 6163 | #ifdef CONFIG_PM |
Tejun Heo | 3c5100c | 2006-07-26 16:58:33 +0900 | [diff] [blame] | 6164 | 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] | 6165 | { |
| 6166 | pci_save_state(pdev); |
Tejun Heo | 4c90d97 | 2007-02-20 18:14:48 +0900 | [diff] [blame] | 6167 | pci_disable_device(pdev); |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 6168 | |
Rafael J. Wysocki | 3a2d5b7 | 2008-02-23 19:13:25 +0100 | [diff] [blame] | 6169 | if (mesg.event & PM_EVENT_SLEEP) |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 6170 | pci_set_power_state(pdev, PCI_D3hot); |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 6171 | } |
| 6172 | |
Tejun Heo | 553c4aa | 2006-12-26 19:39:50 +0900 | [diff] [blame] | 6173 | int ata_pci_device_do_resume(struct pci_dev *pdev) |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 6174 | { |
Tejun Heo | 553c4aa | 2006-12-26 19:39:50 +0900 | [diff] [blame] | 6175 | int rc; |
| 6176 | |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 6177 | pci_set_power_state(pdev, PCI_D0); |
| 6178 | pci_restore_state(pdev); |
Tejun Heo | 553c4aa | 2006-12-26 19:39:50 +0900 | [diff] [blame] | 6179 | |
Tejun Heo | b878ca5 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 6180 | rc = pcim_enable_device(pdev); |
Tejun Heo | 553c4aa | 2006-12-26 19:39:50 +0900 | [diff] [blame] | 6181 | if (rc) { |
| 6182 | dev_printk(KERN_ERR, &pdev->dev, |
| 6183 | "failed to enable device after resume (%d)\n", rc); |
| 6184 | return rc; |
| 6185 | } |
| 6186 | |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 6187 | pci_set_master(pdev); |
Tejun Heo | 553c4aa | 2006-12-26 19:39:50 +0900 | [diff] [blame] | 6188 | return 0; |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 6189 | } |
| 6190 | |
Tejun Heo | 3c5100c | 2006-07-26 16:58:33 +0900 | [diff] [blame] | 6191 | 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] | 6192 | { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 6193 | struct ata_host *host = dev_get_drvdata(&pdev->dev); |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 6194 | int rc = 0; |
| 6195 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 6196 | rc = ata_host_suspend(host, mesg); |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 6197 | if (rc) |
| 6198 | return rc; |
| 6199 | |
Tejun Heo | 3c5100c | 2006-07-26 16:58:33 +0900 | [diff] [blame] | 6200 | ata_pci_device_do_suspend(pdev, mesg); |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 6201 | |
| 6202 | return 0; |
| 6203 | } |
| 6204 | |
| 6205 | int ata_pci_device_resume(struct pci_dev *pdev) |
| 6206 | { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 6207 | struct ata_host *host = dev_get_drvdata(&pdev->dev); |
Tejun Heo | 553c4aa | 2006-12-26 19:39:50 +0900 | [diff] [blame] | 6208 | int rc; |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 6209 | |
Tejun Heo | 553c4aa | 2006-12-26 19:39:50 +0900 | [diff] [blame] | 6210 | rc = ata_pci_device_do_resume(pdev); |
| 6211 | if (rc == 0) |
| 6212 | ata_host_resume(host); |
| 6213 | return rc; |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 6214 | } |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 6215 | #endif /* CONFIG_PM */ |
| 6216 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6217 | #endif /* CONFIG_PCI */ |
| 6218 | |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 6219 | static int __init ata_parse_force_one(char **cur, |
| 6220 | struct ata_force_ent *force_ent, |
| 6221 | const char **reason) |
| 6222 | { |
| 6223 | /* FIXME: Currently, there's no way to tag init const data and |
| 6224 | * using __initdata causes build failure on some versions of |
| 6225 | * gcc. Once __initdataconst is implemented, add const to the |
| 6226 | * following structure. |
| 6227 | */ |
| 6228 | static struct ata_force_param force_tbl[] __initdata = { |
| 6229 | { "40c", .cbl = ATA_CBL_PATA40 }, |
| 6230 | { "80c", .cbl = ATA_CBL_PATA80 }, |
| 6231 | { "short40c", .cbl = ATA_CBL_PATA40_SHORT }, |
| 6232 | { "unk", .cbl = ATA_CBL_PATA_UNK }, |
| 6233 | { "ign", .cbl = ATA_CBL_PATA_IGN }, |
| 6234 | { "sata", .cbl = ATA_CBL_SATA }, |
| 6235 | { "1.5Gbps", .spd_limit = 1 }, |
| 6236 | { "3.0Gbps", .spd_limit = 2 }, |
| 6237 | { "noncq", .horkage_on = ATA_HORKAGE_NONCQ }, |
| 6238 | { "ncq", .horkage_off = ATA_HORKAGE_NONCQ }, |
| 6239 | { "pio0", .xfer_mask = 1 << (ATA_SHIFT_PIO + 0) }, |
| 6240 | { "pio1", .xfer_mask = 1 << (ATA_SHIFT_PIO + 1) }, |
| 6241 | { "pio2", .xfer_mask = 1 << (ATA_SHIFT_PIO + 2) }, |
| 6242 | { "pio3", .xfer_mask = 1 << (ATA_SHIFT_PIO + 3) }, |
| 6243 | { "pio4", .xfer_mask = 1 << (ATA_SHIFT_PIO + 4) }, |
| 6244 | { "pio5", .xfer_mask = 1 << (ATA_SHIFT_PIO + 5) }, |
| 6245 | { "pio6", .xfer_mask = 1 << (ATA_SHIFT_PIO + 6) }, |
| 6246 | { "mwdma0", .xfer_mask = 1 << (ATA_SHIFT_MWDMA + 0) }, |
| 6247 | { "mwdma1", .xfer_mask = 1 << (ATA_SHIFT_MWDMA + 1) }, |
| 6248 | { "mwdma2", .xfer_mask = 1 << (ATA_SHIFT_MWDMA + 2) }, |
| 6249 | { "mwdma3", .xfer_mask = 1 << (ATA_SHIFT_MWDMA + 3) }, |
| 6250 | { "mwdma4", .xfer_mask = 1 << (ATA_SHIFT_MWDMA + 4) }, |
| 6251 | { "udma0", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 0) }, |
| 6252 | { "udma16", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 0) }, |
| 6253 | { "udma/16", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 0) }, |
| 6254 | { "udma1", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 1) }, |
| 6255 | { "udma25", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 1) }, |
| 6256 | { "udma/25", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 1) }, |
| 6257 | { "udma2", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 2) }, |
| 6258 | { "udma33", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 2) }, |
| 6259 | { "udma/33", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 2) }, |
| 6260 | { "udma3", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 3) }, |
| 6261 | { "udma44", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 3) }, |
| 6262 | { "udma/44", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 3) }, |
| 6263 | { "udma4", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 4) }, |
| 6264 | { "udma66", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 4) }, |
| 6265 | { "udma/66", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 4) }, |
| 6266 | { "udma5", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 5) }, |
| 6267 | { "udma100", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 5) }, |
| 6268 | { "udma/100", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 5) }, |
| 6269 | { "udma6", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 6) }, |
| 6270 | { "udma133", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 6) }, |
| 6271 | { "udma/133", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 6) }, |
| 6272 | { "udma7", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 7) }, |
Tejun Heo | 05944bd | 2008-08-13 20:19:09 +0900 | [diff] [blame] | 6273 | { "nohrst", .lflags = ATA_LFLAG_NO_HRST }, |
| 6274 | { "nosrst", .lflags = ATA_LFLAG_NO_SRST }, |
| 6275 | { "norst", .lflags = ATA_LFLAG_NO_HRST | ATA_LFLAG_NO_SRST }, |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 6276 | }; |
| 6277 | char *start = *cur, *p = *cur; |
| 6278 | char *id, *val, *endp; |
| 6279 | const struct ata_force_param *match_fp = NULL; |
| 6280 | int nr_matches = 0, i; |
| 6281 | |
| 6282 | /* find where this param ends and update *cur */ |
| 6283 | while (*p != '\0' && *p != ',') |
| 6284 | p++; |
| 6285 | |
| 6286 | if (*p == '\0') |
| 6287 | *cur = p; |
| 6288 | else |
| 6289 | *cur = p + 1; |
| 6290 | |
| 6291 | *p = '\0'; |
| 6292 | |
| 6293 | /* parse */ |
| 6294 | p = strchr(start, ':'); |
| 6295 | if (!p) { |
| 6296 | val = strstrip(start); |
| 6297 | goto parse_val; |
| 6298 | } |
| 6299 | *p = '\0'; |
| 6300 | |
| 6301 | id = strstrip(start); |
| 6302 | val = strstrip(p + 1); |
| 6303 | |
| 6304 | /* parse id */ |
| 6305 | p = strchr(id, '.'); |
| 6306 | if (p) { |
| 6307 | *p++ = '\0'; |
| 6308 | force_ent->device = simple_strtoul(p, &endp, 10); |
| 6309 | if (p == endp || *endp != '\0') { |
| 6310 | *reason = "invalid device"; |
| 6311 | return -EINVAL; |
| 6312 | } |
| 6313 | } |
| 6314 | |
| 6315 | force_ent->port = simple_strtoul(id, &endp, 10); |
| 6316 | if (p == endp || *endp != '\0') { |
| 6317 | *reason = "invalid port/link"; |
| 6318 | return -EINVAL; |
| 6319 | } |
| 6320 | |
| 6321 | parse_val: |
| 6322 | /* parse val, allow shortcuts so that both 1.5 and 1.5Gbps work */ |
| 6323 | for (i = 0; i < ARRAY_SIZE(force_tbl); i++) { |
| 6324 | const struct ata_force_param *fp = &force_tbl[i]; |
| 6325 | |
| 6326 | if (strncasecmp(val, fp->name, strlen(val))) |
| 6327 | continue; |
| 6328 | |
| 6329 | nr_matches++; |
| 6330 | match_fp = fp; |
| 6331 | |
| 6332 | if (strcasecmp(val, fp->name) == 0) { |
| 6333 | nr_matches = 1; |
| 6334 | break; |
| 6335 | } |
| 6336 | } |
| 6337 | |
| 6338 | if (!nr_matches) { |
| 6339 | *reason = "unknown value"; |
| 6340 | return -EINVAL; |
| 6341 | } |
| 6342 | if (nr_matches > 1) { |
| 6343 | *reason = "ambigious value"; |
| 6344 | return -EINVAL; |
| 6345 | } |
| 6346 | |
| 6347 | force_ent->param = *match_fp; |
| 6348 | |
| 6349 | return 0; |
| 6350 | } |
| 6351 | |
| 6352 | static void __init ata_parse_force_param(void) |
| 6353 | { |
| 6354 | int idx = 0, size = 1; |
| 6355 | int last_port = -1, last_device = -1; |
| 6356 | char *p, *cur, *next; |
| 6357 | |
| 6358 | /* calculate maximum number of params and allocate force_tbl */ |
| 6359 | for (p = ata_force_param_buf; *p; p++) |
| 6360 | if (*p == ',') |
| 6361 | size++; |
| 6362 | |
| 6363 | ata_force_tbl = kzalloc(sizeof(ata_force_tbl[0]) * size, GFP_KERNEL); |
| 6364 | if (!ata_force_tbl) { |
| 6365 | printk(KERN_WARNING "ata: failed to extend force table, " |
| 6366 | "libata.force ignored\n"); |
| 6367 | return; |
| 6368 | } |
| 6369 | |
| 6370 | /* parse and populate the table */ |
| 6371 | for (cur = ata_force_param_buf; *cur != '\0'; cur = next) { |
| 6372 | const char *reason = ""; |
| 6373 | struct ata_force_ent te = { .port = -1, .device = -1 }; |
| 6374 | |
| 6375 | next = cur; |
| 6376 | if (ata_parse_force_one(&next, &te, &reason)) { |
| 6377 | printk(KERN_WARNING "ata: failed to parse force " |
| 6378 | "parameter \"%s\" (%s)\n", |
| 6379 | cur, reason); |
| 6380 | continue; |
| 6381 | } |
| 6382 | |
| 6383 | if (te.port == -1) { |
| 6384 | te.port = last_port; |
| 6385 | te.device = last_device; |
| 6386 | } |
| 6387 | |
| 6388 | ata_force_tbl[idx++] = te; |
| 6389 | |
| 6390 | last_port = te.port; |
| 6391 | last_device = te.device; |
| 6392 | } |
| 6393 | |
| 6394 | ata_force_tbl_size = idx; |
| 6395 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6396 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6397 | static int __init ata_init(void) |
| 6398 | { |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 6399 | ata_parse_force_param(); |
| 6400 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6401 | ata_wq = create_workqueue("ata"); |
| 6402 | if (!ata_wq) |
Elias Oltmanns | 49ea3b0 | 2008-07-30 12:32:39 -0700 | [diff] [blame] | 6403 | goto free_force_tbl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6404 | |
Tejun Heo | 453b07a | 2006-05-31 18:27:42 +0900 | [diff] [blame] | 6405 | ata_aux_wq = create_singlethread_workqueue("ata_aux"); |
Elias Oltmanns | 49ea3b0 | 2008-07-30 12:32:39 -0700 | [diff] [blame] | 6406 | if (!ata_aux_wq) |
| 6407 | goto free_wq; |
Tejun Heo | 453b07a | 2006-05-31 18:27:42 +0900 | [diff] [blame] | 6408 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6409 | printk(KERN_DEBUG "libata version " DRV_VERSION " loaded.\n"); |
| 6410 | return 0; |
Elias Oltmanns | 49ea3b0 | 2008-07-30 12:32:39 -0700 | [diff] [blame] | 6411 | |
| 6412 | free_wq: |
| 6413 | destroy_workqueue(ata_wq); |
| 6414 | free_force_tbl: |
| 6415 | kfree(ata_force_tbl); |
| 6416 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6417 | } |
| 6418 | |
| 6419 | static void __exit ata_exit(void) |
| 6420 | { |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 6421 | kfree(ata_force_tbl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6422 | destroy_workqueue(ata_wq); |
Tejun Heo | 453b07a | 2006-05-31 18:27:42 +0900 | [diff] [blame] | 6423 | destroy_workqueue(ata_aux_wq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6424 | } |
| 6425 | |
Brian King | a462508 | 2006-11-13 16:32:36 -0600 | [diff] [blame] | 6426 | subsys_initcall(ata_init); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6427 | module_exit(ata_exit); |
| 6428 | |
Jeff Garzik | 67846b3 | 2005-10-05 02:58:32 -0400 | [diff] [blame] | 6429 | static unsigned long ratelimit_time; |
Ingo Molnar | 34af946 | 2006-06-27 02:53:55 -0700 | [diff] [blame] | 6430 | static DEFINE_SPINLOCK(ata_ratelimit_lock); |
Jeff Garzik | 67846b3 | 2005-10-05 02:58:32 -0400 | [diff] [blame] | 6431 | |
| 6432 | int ata_ratelimit(void) |
| 6433 | { |
| 6434 | int rc; |
| 6435 | unsigned long flags; |
| 6436 | |
| 6437 | spin_lock_irqsave(&ata_ratelimit_lock, flags); |
| 6438 | |
| 6439 | if (time_after(jiffies, ratelimit_time)) { |
| 6440 | rc = 1; |
| 6441 | ratelimit_time = jiffies + (HZ/5); |
| 6442 | } else |
| 6443 | rc = 0; |
| 6444 | |
| 6445 | spin_unlock_irqrestore(&ata_ratelimit_lock, flags); |
| 6446 | |
| 6447 | return rc; |
| 6448 | } |
| 6449 | |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 6450 | /** |
| 6451 | * ata_wait_register - wait until register value changes |
| 6452 | * @reg: IO-mapped register |
| 6453 | * @mask: Mask to apply to read register value |
| 6454 | * @val: Wait condition |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 6455 | * @interval: polling interval in milliseconds |
| 6456 | * @timeout: timeout in milliseconds |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 6457 | * |
| 6458 | * Waiting for some bits of register to change is a common |
| 6459 | * operation for ATA controllers. This function reads 32bit LE |
| 6460 | * IO-mapped register @reg and tests for the following condition. |
| 6461 | * |
| 6462 | * (*@reg & mask) != val |
| 6463 | * |
| 6464 | * If the condition is met, it returns; otherwise, the process is |
| 6465 | * repeated after @interval_msec until timeout. |
| 6466 | * |
| 6467 | * LOCKING: |
| 6468 | * Kernel thread context (may sleep) |
| 6469 | * |
| 6470 | * RETURNS: |
| 6471 | * The final register value. |
| 6472 | */ |
| 6473 | u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val, |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 6474 | unsigned long interval, unsigned long timeout) |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 6475 | { |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 6476 | unsigned long deadline; |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 6477 | u32 tmp; |
| 6478 | |
| 6479 | tmp = ioread32(reg); |
| 6480 | |
| 6481 | /* Calculate timeout _after_ the first read to make sure |
| 6482 | * preceding writes reach the controller before starting to |
| 6483 | * eat away the timeout. |
| 6484 | */ |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 6485 | deadline = ata_deadline(jiffies, timeout); |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 6486 | |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 6487 | while ((tmp & mask) == val && time_before(jiffies, deadline)) { |
| 6488 | msleep(interval); |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 6489 | tmp = ioread32(reg); |
| 6490 | } |
| 6491 | |
| 6492 | return tmp; |
| 6493 | } |
| 6494 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6495 | /* |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 6496 | * Dummy port_ops |
| 6497 | */ |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 6498 | static unsigned int ata_dummy_qc_issue(struct ata_queued_cmd *qc) |
| 6499 | { |
| 6500 | return AC_ERR_SYSTEM; |
| 6501 | } |
| 6502 | |
Tejun Heo | 182d7bb | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 6503 | static void ata_dummy_error_handler(struct ata_port *ap) |
| 6504 | { |
| 6505 | /* truly dummy */ |
| 6506 | } |
| 6507 | |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 6508 | struct ata_port_operations ata_dummy_port_ops = { |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 6509 | .qc_prep = ata_noop_qc_prep, |
| 6510 | .qc_issue = ata_dummy_qc_issue, |
Tejun Heo | 182d7bb | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 6511 | .error_handler = ata_dummy_error_handler, |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 6512 | }; |
| 6513 | |
Tejun Heo | 21b0ad4 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6514 | const struct ata_port_info ata_dummy_port_info = { |
| 6515 | .port_ops = &ata_dummy_port_ops, |
| 6516 | }; |
| 6517 | |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 6518 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6519 | * libata is essentially a library of internal helper functions for |
| 6520 | * low-level ATA host controller drivers. As such, the API/ABI is |
| 6521 | * likely to change as new drivers are added and updated. |
| 6522 | * Do not depend on ABI/API stability. |
| 6523 | */ |
Tejun Heo | e9c8391 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 6524 | EXPORT_SYMBOL_GPL(sata_deb_timing_normal); |
| 6525 | EXPORT_SYMBOL_GPL(sata_deb_timing_hotplug); |
| 6526 | EXPORT_SYMBOL_GPL(sata_deb_timing_long); |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 6527 | EXPORT_SYMBOL_GPL(ata_base_port_ops); |
| 6528 | EXPORT_SYMBOL_GPL(sata_port_ops); |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 6529 | EXPORT_SYMBOL_GPL(ata_dummy_port_ops); |
Tejun Heo | 21b0ad4 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6530 | EXPORT_SYMBOL_GPL(ata_dummy_port_info); |
Tejun Heo | aadffb6 | 2008-07-31 17:02:41 +0900 | [diff] [blame] | 6531 | EXPORT_SYMBOL_GPL(__ata_port_next_link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6532 | EXPORT_SYMBOL_GPL(ata_std_bios_param); |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 6533 | EXPORT_SYMBOL_GPL(ata_host_init); |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6534 | EXPORT_SYMBOL_GPL(ata_host_alloc); |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6535 | EXPORT_SYMBOL_GPL(ata_host_alloc_pinfo); |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 6536 | EXPORT_SYMBOL_GPL(ata_slave_link_init); |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 6537 | EXPORT_SYMBOL_GPL(ata_host_start); |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6538 | EXPORT_SYMBOL_GPL(ata_host_register); |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6539 | EXPORT_SYMBOL_GPL(ata_host_activate); |
Tejun Heo | 0529c15 | 2007-01-20 16:00:26 +0900 | [diff] [blame] | 6540 | EXPORT_SYMBOL_GPL(ata_host_detach); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6541 | EXPORT_SYMBOL_GPL(ata_sg_init); |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 6542 | EXPORT_SYMBOL_GPL(ata_qc_complete); |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 6543 | EXPORT_SYMBOL_GPL(ata_qc_complete_multiple); |
Tejun Heo | 436d34b | 2008-04-02 17:28:46 +0900 | [diff] [blame] | 6544 | EXPORT_SYMBOL_GPL(atapi_cmd_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6545 | EXPORT_SYMBOL_GPL(ata_tf_to_fis); |
| 6546 | EXPORT_SYMBOL_GPL(ata_tf_from_fis); |
Tejun Heo | 6357357 | 2007-11-27 19:43:39 +0900 | [diff] [blame] | 6547 | EXPORT_SYMBOL_GPL(ata_pack_xfermask); |
| 6548 | EXPORT_SYMBOL_GPL(ata_unpack_xfermask); |
| 6549 | EXPORT_SYMBOL_GPL(ata_xfer_mask2mode); |
| 6550 | EXPORT_SYMBOL_GPL(ata_xfer_mode2mask); |
| 6551 | EXPORT_SYMBOL_GPL(ata_xfer_mode2shift); |
| 6552 | EXPORT_SYMBOL_GPL(ata_mode_string); |
| 6553 | EXPORT_SYMBOL_GPL(ata_id_xfermask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6554 | EXPORT_SYMBOL_GPL(ata_port_start); |
Alan | 0435182 | 2007-03-06 02:37:52 -0800 | [diff] [blame] | 6555 | EXPORT_SYMBOL_GPL(ata_do_set_mode); |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 6556 | EXPORT_SYMBOL_GPL(ata_std_qc_defer); |
Brian King | e46834c | 2006-03-17 17:04:03 -0600 | [diff] [blame] | 6557 | EXPORT_SYMBOL_GPL(ata_noop_qc_prep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6558 | EXPORT_SYMBOL_GPL(ata_port_probe); |
Alan | 10305f0 | 2007-02-20 18:01:59 +0000 | [diff] [blame] | 6559 | EXPORT_SYMBOL_GPL(ata_dev_disable); |
Tejun Heo | 3c567b7 | 2006-05-15 20:57:23 +0900 | [diff] [blame] | 6560 | EXPORT_SYMBOL_GPL(sata_set_spd); |
Tejun Heo | aa2731a | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 6561 | EXPORT_SYMBOL_GPL(ata_wait_after_reset); |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 6562 | EXPORT_SYMBOL_GPL(sata_link_debounce); |
| 6563 | EXPORT_SYMBOL_GPL(sata_link_resume); |
Tejun Heo | 0aa1113 | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 6564 | EXPORT_SYMBOL_GPL(ata_std_prereset); |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 6565 | EXPORT_SYMBOL_GPL(sata_link_hardreset); |
Tejun Heo | 57c9efd | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 6566 | EXPORT_SYMBOL_GPL(sata_std_hardreset); |
Tejun Heo | 203c75b | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 6567 | EXPORT_SYMBOL_GPL(ata_std_postreset); |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 6568 | EXPORT_SYMBOL_GPL(ata_dev_classify); |
| 6569 | EXPORT_SYMBOL_GPL(ata_dev_pair); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6570 | EXPORT_SYMBOL_GPL(ata_port_disable); |
Jeff Garzik | 67846b3 | 2005-10-05 02:58:32 -0400 | [diff] [blame] | 6571 | EXPORT_SYMBOL_GPL(ata_ratelimit); |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 6572 | EXPORT_SYMBOL_GPL(ata_wait_register); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6573 | EXPORT_SYMBOL_GPL(ata_scsi_ioctl); |
| 6574 | EXPORT_SYMBOL_GPL(ata_scsi_queuecmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6575 | EXPORT_SYMBOL_GPL(ata_scsi_slave_config); |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 6576 | EXPORT_SYMBOL_GPL(ata_scsi_slave_destroy); |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 6577 | EXPORT_SYMBOL_GPL(ata_scsi_change_queue_depth); |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 6578 | EXPORT_SYMBOL_GPL(sata_scr_valid); |
| 6579 | EXPORT_SYMBOL_GPL(sata_scr_read); |
| 6580 | EXPORT_SYMBOL_GPL(sata_scr_write); |
| 6581 | EXPORT_SYMBOL_GPL(sata_scr_write_flush); |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 6582 | EXPORT_SYMBOL_GPL(ata_link_online); |
| 6583 | EXPORT_SYMBOL_GPL(ata_link_offline); |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 6584 | #ifdef CONFIG_PM |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 6585 | EXPORT_SYMBOL_GPL(ata_host_suspend); |
| 6586 | EXPORT_SYMBOL_GPL(ata_host_resume); |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 6587 | #endif /* CONFIG_PM */ |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 6588 | EXPORT_SYMBOL_GPL(ata_id_string); |
| 6589 | EXPORT_SYMBOL_GPL(ata_id_c_string); |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 6590 | EXPORT_SYMBOL_GPL(ata_do_dev_read_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6591 | EXPORT_SYMBOL_GPL(ata_scsi_simulate); |
| 6592 | |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 6593 | EXPORT_SYMBOL_GPL(ata_pio_need_iordy); |
Tejun Heo | 6357357 | 2007-11-27 19:43:39 +0900 | [diff] [blame] | 6594 | EXPORT_SYMBOL_GPL(ata_timing_find_mode); |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 6595 | EXPORT_SYMBOL_GPL(ata_timing_compute); |
| 6596 | EXPORT_SYMBOL_GPL(ata_timing_merge); |
Tejun Heo | a0f79b9 | 2007-12-18 16:33:05 +0900 | [diff] [blame] | 6597 | EXPORT_SYMBOL_GPL(ata_timing_cycle2mode); |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 6598 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6599 | #ifdef CONFIG_PCI |
| 6600 | EXPORT_SYMBOL_GPL(pci_test_config_bits); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6601 | EXPORT_SYMBOL_GPL(ata_pci_remove_one); |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 6602 | #ifdef CONFIG_PM |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 6603 | EXPORT_SYMBOL_GPL(ata_pci_device_do_suspend); |
| 6604 | EXPORT_SYMBOL_GPL(ata_pci_device_do_resume); |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 6605 | EXPORT_SYMBOL_GPL(ata_pci_device_suspend); |
| 6606 | EXPORT_SYMBOL_GPL(ata_pci_device_resume); |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 6607 | #endif /* CONFIG_PM */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6608 | #endif /* CONFIG_PCI */ |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 6609 | |
Tejun Heo | b64bbc3 | 2007-07-16 14:29:39 +0900 | [diff] [blame] | 6610 | EXPORT_SYMBOL_GPL(__ata_ehi_push_desc); |
| 6611 | EXPORT_SYMBOL_GPL(ata_ehi_push_desc); |
| 6612 | EXPORT_SYMBOL_GPL(ata_ehi_clear_desc); |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 6613 | EXPORT_SYMBOL_GPL(ata_port_desc); |
| 6614 | #ifdef CONFIG_PCI |
| 6615 | EXPORT_SYMBOL_GPL(ata_port_pbar_desc); |
| 6616 | #endif /* CONFIG_PCI */ |
Tejun Heo | 7b70fc0 | 2006-05-15 20:58:07 +0900 | [diff] [blame] | 6617 | EXPORT_SYMBOL_GPL(ata_port_schedule_eh); |
Tejun Heo | dbd8261 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 6618 | EXPORT_SYMBOL_GPL(ata_link_abort); |
Tejun Heo | 7b70fc0 | 2006-05-15 20:58:07 +0900 | [diff] [blame] | 6619 | EXPORT_SYMBOL_GPL(ata_port_abort); |
Tejun Heo | e318049 | 2006-05-15 20:58:09 +0900 | [diff] [blame] | 6620 | EXPORT_SYMBOL_GPL(ata_port_freeze); |
Tejun Heo | 7d77b24 | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 6621 | EXPORT_SYMBOL_GPL(sata_async_notification); |
Tejun Heo | e318049 | 2006-05-15 20:58:09 +0900 | [diff] [blame] | 6622 | EXPORT_SYMBOL_GPL(ata_eh_freeze_port); |
| 6623 | EXPORT_SYMBOL_GPL(ata_eh_thaw_port); |
Tejun Heo | ece1d63 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 6624 | EXPORT_SYMBOL_GPL(ata_eh_qc_complete); |
| 6625 | EXPORT_SYMBOL_GPL(ata_eh_qc_retry); |
Mark Lord | 10acf3b | 2008-05-02 02:14:53 -0400 | [diff] [blame] | 6626 | EXPORT_SYMBOL_GPL(ata_eh_analyze_ncq_error); |
Tejun Heo | 022bdb0 | 2006-05-15 20:58:22 +0900 | [diff] [blame] | 6627 | EXPORT_SYMBOL_GPL(ata_do_eh); |
Tejun Heo | a1efdab | 2008-03-25 12:22:50 +0900 | [diff] [blame] | 6628 | EXPORT_SYMBOL_GPL(ata_std_error_handler); |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 6629 | |
| 6630 | EXPORT_SYMBOL_GPL(ata_cable_40wire); |
| 6631 | EXPORT_SYMBOL_GPL(ata_cable_80wire); |
| 6632 | EXPORT_SYMBOL_GPL(ata_cable_unknown); |
Tejun Heo | c88f90c | 2007-11-27 19:43:48 +0900 | [diff] [blame] | 6633 | EXPORT_SYMBOL_GPL(ata_cable_ignore); |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 6634 | EXPORT_SYMBOL_GPL(ata_cable_sata); |