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> |
Arjan van de Ven | 7931805 | 2009-01-04 05:32:28 -0800 | [diff] [blame] | 59 | #include <linux/async.h> |
Mark Lord | e18086d | 2009-03-19 13:32:21 -0400 | [diff] [blame] | 60 | #include <linux/log2.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 61 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | #include <scsi/scsi.h> |
Jeff Garzik | 193515d | 2005-11-07 00:59:37 -0500 | [diff] [blame] | 63 | #include <scsi/scsi_cmnd.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | #include <scsi/scsi_host.h> |
| 65 | #include <linux/libata.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | #include <asm/byteorder.h> |
Tejun Heo | 140b5e5 | 2007-12-12 12:21:52 +0900 | [diff] [blame] | 67 | #include <linux/cdrom.h> |
Akinobu Mita | 9990b6f | 2010-04-12 21:11:41 +0900 | [diff] [blame] | 68 | #include <linux/ratelimit.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | |
| 70 | #include "libata.h" |
| 71 | |
Jeff Garzik | fda0efc | 2007-01-31 07:43:15 -0500 | [diff] [blame] | 72 | |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 73 | /* debounce timing parameters in msecs { interval, duration, timeout } */ |
Tejun Heo | e9c8391 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 74 | const unsigned long sata_deb_timing_normal[] = { 5, 100, 2000 }; |
| 75 | const unsigned long sata_deb_timing_hotplug[] = { 25, 500, 2000 }; |
| 76 | const unsigned long sata_deb_timing_long[] = { 100, 2000, 5000 }; |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 77 | |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 78 | const struct ata_port_operations ata_base_port_ops = { |
Tejun Heo | 0aa1113 | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 79 | .prereset = ata_std_prereset, |
Tejun Heo | 203c75b | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 80 | .postreset = ata_std_postreset, |
Tejun Heo | a1efdab | 2008-03-25 12:22:50 +0900 | [diff] [blame] | 81 | .error_handler = ata_std_error_handler, |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 82 | }; |
| 83 | |
| 84 | const struct ata_port_operations sata_port_ops = { |
| 85 | .inherits = &ata_base_port_ops, |
| 86 | |
| 87 | .qc_defer = ata_std_qc_defer, |
Tejun Heo | 57c9efd | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 88 | .hardreset = sata_std_hardreset, |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 89 | }; |
| 90 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 91 | static unsigned int ata_dev_init_params(struct ata_device *dev, |
| 92 | u16 heads, u16 sectors); |
| 93 | static unsigned int ata_dev_set_xfermode(struct ata_device *dev); |
Jeff Garzik | 218f3d3 | 2007-10-25 00:33:27 -0400 | [diff] [blame] | 94 | static unsigned int ata_dev_set_feature(struct ata_device *dev, |
| 95 | u8 enable, u8 feature); |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 96 | static void ata_dev_xfermask(struct ata_device *dev); |
Tejun Heo | 75683fe | 2007-07-05 13:31:27 +0900 | [diff] [blame] | 97 | static unsigned long ata_dev_blacklisted(const struct ata_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 99 | unsigned int ata_print_id = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | |
Tejun Heo | 453b07a | 2006-05-31 18:27:42 +0900 | [diff] [blame] | 101 | struct workqueue_struct *ata_aux_wq; |
| 102 | |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 103 | struct ata_force_param { |
| 104 | const char *name; |
| 105 | unsigned int cbl; |
| 106 | int spd_limit; |
| 107 | unsigned long xfer_mask; |
| 108 | unsigned int horkage_on; |
| 109 | unsigned int horkage_off; |
Tejun Heo | 05944bd | 2008-08-13 20:19:09 +0900 | [diff] [blame] | 110 | unsigned int lflags; |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 111 | }; |
| 112 | |
| 113 | struct ata_force_ent { |
| 114 | int port; |
| 115 | int device; |
| 116 | struct ata_force_param param; |
| 117 | }; |
| 118 | |
| 119 | static struct ata_force_ent *ata_force_tbl; |
| 120 | static int ata_force_tbl_size; |
| 121 | |
| 122 | static char ata_force_param_buf[PAGE_SIZE] __initdata; |
Tejun Heo | 7afb422 | 2008-03-09 20:21:53 +0900 | [diff] [blame] | 123 | /* param_buf is thrown away after initialization, disallow read */ |
| 124 | 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] | 125 | MODULE_PARM_DESC(force, "Force ATA configurations including cable type, link speed and transfer mode (see Documentation/kernel-parameters.txt for details)"); |
| 126 | |
Tejun Heo | 2486fa5 | 2008-07-31 07:52:40 +0900 | [diff] [blame] | 127 | static int atapi_enabled = 1; |
Jeff Garzik | 1623c81 | 2005-08-30 03:37:42 -0400 | [diff] [blame] | 128 | module_param(atapi_enabled, int, 0444); |
Evgeni Golov | ad5d8ea | 2009-06-22 09:46:20 +0200 | [diff] [blame] | 129 | MODULE_PARM_DESC(atapi_enabled, "Enable discovery of ATAPI devices (0=off, 1=on [default])"); |
Jeff Garzik | 1623c81 | 2005-08-30 03:37:42 -0400 | [diff] [blame] | 130 | |
Adrian Bunk | c5c61bd | 2008-02-25 02:07:25 +0200 | [diff] [blame] | 131 | static int atapi_dmadir = 0; |
Albert Lee | 95de719 | 2006-04-04 10:57:18 +0800 | [diff] [blame] | 132 | module_param(atapi_dmadir, int, 0444); |
Evgeni Golov | ad5d8ea | 2009-06-22 09:46:20 +0200 | [diff] [blame] | 133 | MODULE_PARM_DESC(atapi_dmadir, "Enable ATAPI DMADIR bridge support (0=off [default], 1=on)"); |
Albert Lee | 95de719 | 2006-04-04 10:57:18 +0800 | [diff] [blame] | 134 | |
Mark Lord | baf4fdf | 2007-08-08 01:08:45 +0900 | [diff] [blame] | 135 | int atapi_passthru16 = 1; |
| 136 | module_param(atapi_passthru16, int, 0444); |
Evgeni Golov | ad5d8ea | 2009-06-22 09:46:20 +0200 | [diff] [blame] | 137 | MODULE_PARM_DESC(atapi_passthru16, "Enable ATA_16 passthru for ATAPI devices (0=off, 1=on [default])"); |
Mark Lord | baf4fdf | 2007-08-08 01:08:45 +0900 | [diff] [blame] | 138 | |
Jeff Garzik | c3c013a | 2006-02-27 22:31:19 -0500 | [diff] [blame] | 139 | int libata_fua = 0; |
| 140 | module_param_named(fua, libata_fua, int, 0444); |
Evgeni Golov | ad5d8ea | 2009-06-22 09:46:20 +0200 | [diff] [blame] | 141 | MODULE_PARM_DESC(fua, "FUA support (0=off [default], 1=on)"); |
Jeff Garzik | c3c013a | 2006-02-27 22:31:19 -0500 | [diff] [blame] | 142 | |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 143 | static int ata_ignore_hpa; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 144 | module_param_named(ignore_hpa, ata_ignore_hpa, int, 0644); |
| 145 | MODULE_PARM_DESC(ignore_hpa, "Ignore HPA limit (0=keep BIOS limits, 1=ignore limits, using full disk)"); |
| 146 | |
Alan Cox | b3a7060 | 2007-10-02 12:38:26 -0400 | [diff] [blame] | 147 | static int libata_dma_mask = ATA_DMA_MASK_ATA|ATA_DMA_MASK_ATAPI|ATA_DMA_MASK_CFA; |
| 148 | module_param_named(dma, libata_dma_mask, int, 0444); |
| 149 | MODULE_PARM_DESC(dma, "DMA enable/disable (0x1==ATA, 0x2==ATAPI, 0x4==CF)"); |
| 150 | |
Tejun Heo | 87fbc5a | 2008-05-20 02:17:54 +0900 | [diff] [blame] | 151 | static int ata_probe_timeout; |
Andrew Morton | a8601e5 | 2006-06-25 01:36:52 -0700 | [diff] [blame] | 152 | module_param(ata_probe_timeout, int, 0444); |
| 153 | MODULE_PARM_DESC(ata_probe_timeout, "Set ATA probing timeout (seconds)"); |
| 154 | |
Jeff Garzik | 6ebe9d8 | 2007-10-05 16:28:36 -0400 | [diff] [blame] | 155 | int libata_noacpi = 0; |
Jeff Garzik | d7d0dad | 2007-03-28 01:57:37 -0400 | [diff] [blame] | 156 | module_param_named(noacpi, libata_noacpi, int, 0444); |
Evgeni Golov | ad5d8ea | 2009-06-22 09:46:20 +0200 | [diff] [blame] | 157 | MODULE_PARM_DESC(noacpi, "Disable the use of ACPI in probe/suspend/resume (0=off [default], 1=on)"); |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 158 | |
Alan Cox | ae8d4ee | 2007-11-04 22:05:49 -0500 | [diff] [blame] | 159 | int libata_allow_tpm = 0; |
| 160 | module_param_named(allow_tpm, libata_allow_tpm, int, 0444); |
Evgeni Golov | ad5d8ea | 2009-06-22 09:46:20 +0200 | [diff] [blame] | 161 | MODULE_PARM_DESC(allow_tpm, "Permit the use of TPM commands (0=off [default], 1=on)"); |
Alan Cox | ae8d4ee | 2007-11-04 22:05:49 -0500 | [diff] [blame] | 162 | |
Tejun Heo | e7ecd43 | 2010-05-19 15:38:58 +0200 | [diff] [blame] | 163 | static int atapi_an; |
| 164 | module_param(atapi_an, int, 0444); |
| 165 | MODULE_PARM_DESC(atapi_an, "Enable ATAPI AN media presence notification (0=0ff [default], 1=on)"); |
| 166 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | MODULE_AUTHOR("Jeff Garzik"); |
| 168 | MODULE_DESCRIPTION("Library module for ATA devices"); |
| 169 | MODULE_LICENSE("GPL"); |
| 170 | MODULE_VERSION(DRV_VERSION); |
| 171 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 172 | |
Tejun Heo | 9913ff8 | 2009-01-29 20:31:31 +0900 | [diff] [blame] | 173 | static bool ata_sstatus_online(u32 sstatus) |
| 174 | { |
| 175 | return (sstatus & 0xf) == 0x3; |
| 176 | } |
| 177 | |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 178 | /** |
| 179 | * ata_link_next - link iteration helper |
| 180 | * @link: the previous link, NULL to start |
| 181 | * @ap: ATA port containing links to iterate |
| 182 | * @mode: iteration mode, one of ATA_LITER_* |
Tejun Heo | aadffb6 | 2008-07-31 17:02:41 +0900 | [diff] [blame] | 183 | * |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 184 | * LOCKING: |
| 185 | * Host lock or EH context. |
| 186 | * |
| 187 | * RETURNS: |
| 188 | * Pointer to the next link. |
Tejun Heo | aadffb6 | 2008-07-31 17:02:41 +0900 | [diff] [blame] | 189 | */ |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 190 | struct ata_link *ata_link_next(struct ata_link *link, struct ata_port *ap, |
| 191 | enum ata_link_iter_mode mode) |
Tejun Heo | aadffb6 | 2008-07-31 17:02:41 +0900 | [diff] [blame] | 192 | { |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 193 | BUG_ON(mode != ATA_LITER_EDGE && |
| 194 | mode != ATA_LITER_PMP_FIRST && mode != ATA_LITER_HOST_FIRST); |
Tejun Heo | aadffb6 | 2008-07-31 17:02:41 +0900 | [diff] [blame] | 195 | |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 196 | /* NULL link indicates start of iteration */ |
| 197 | if (!link) |
| 198 | switch (mode) { |
| 199 | case ATA_LITER_EDGE: |
| 200 | case ATA_LITER_PMP_FIRST: |
| 201 | if (sata_pmp_attached(ap)) |
| 202 | return ap->pmp_link; |
| 203 | /* fall through */ |
| 204 | case ATA_LITER_HOST_FIRST: |
| 205 | return &ap->link; |
| 206 | } |
| 207 | |
| 208 | /* we just iterated over the host link, what's next? */ |
| 209 | if (link == &ap->link) |
| 210 | switch (mode) { |
| 211 | case ATA_LITER_HOST_FIRST: |
| 212 | if (sata_pmp_attached(ap)) |
| 213 | return ap->pmp_link; |
| 214 | /* fall through */ |
| 215 | case ATA_LITER_PMP_FIRST: |
| 216 | if (unlikely(ap->slave_link)) |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 217 | return ap->slave_link; |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 218 | /* fall through */ |
| 219 | case ATA_LITER_EDGE: |
Tejun Heo | aadffb6 | 2008-07-31 17:02:41 +0900 | [diff] [blame] | 220 | return NULL; |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 221 | } |
Tejun Heo | aadffb6 | 2008-07-31 17:02:41 +0900 | [diff] [blame] | 222 | |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 223 | /* slave_link excludes PMP */ |
| 224 | if (unlikely(link == ap->slave_link)) |
| 225 | return NULL; |
| 226 | |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 227 | /* we were over a PMP link */ |
Tejun Heo | aadffb6 | 2008-07-31 17:02:41 +0900 | [diff] [blame] | 228 | if (++link < ap->pmp_link + ap->nr_pmp_links) |
| 229 | return link; |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 230 | |
| 231 | if (mode == ATA_LITER_PMP_FIRST) |
| 232 | return &ap->link; |
| 233 | |
Tejun Heo | aadffb6 | 2008-07-31 17:02:41 +0900 | [diff] [blame] | 234 | return NULL; |
| 235 | } |
| 236 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 237 | /** |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 238 | * ata_dev_next - device iteration helper |
| 239 | * @dev: the previous device, NULL to start |
| 240 | * @link: ATA link containing devices to iterate |
| 241 | * @mode: iteration mode, one of ATA_DITER_* |
| 242 | * |
| 243 | * LOCKING: |
| 244 | * Host lock or EH context. |
| 245 | * |
| 246 | * RETURNS: |
| 247 | * Pointer to the next device. |
| 248 | */ |
| 249 | struct ata_device *ata_dev_next(struct ata_device *dev, struct ata_link *link, |
| 250 | enum ata_dev_iter_mode mode) |
| 251 | { |
| 252 | BUG_ON(mode != ATA_DITER_ENABLED && mode != ATA_DITER_ENABLED_REVERSE && |
| 253 | mode != ATA_DITER_ALL && mode != ATA_DITER_ALL_REVERSE); |
| 254 | |
| 255 | /* NULL dev indicates start of iteration */ |
| 256 | if (!dev) |
| 257 | switch (mode) { |
| 258 | case ATA_DITER_ENABLED: |
| 259 | case ATA_DITER_ALL: |
| 260 | dev = link->device; |
| 261 | goto check; |
| 262 | case ATA_DITER_ENABLED_REVERSE: |
| 263 | case ATA_DITER_ALL_REVERSE: |
| 264 | dev = link->device + ata_link_max_devices(link) - 1; |
| 265 | goto check; |
| 266 | } |
| 267 | |
| 268 | next: |
| 269 | /* move to the next one */ |
| 270 | switch (mode) { |
| 271 | case ATA_DITER_ENABLED: |
| 272 | case ATA_DITER_ALL: |
| 273 | if (++dev < link->device + ata_link_max_devices(link)) |
| 274 | goto check; |
| 275 | return NULL; |
| 276 | case ATA_DITER_ENABLED_REVERSE: |
| 277 | case ATA_DITER_ALL_REVERSE: |
| 278 | if (--dev >= link->device) |
| 279 | goto check; |
| 280 | return NULL; |
| 281 | } |
| 282 | |
| 283 | check: |
| 284 | if ((mode == ATA_DITER_ENABLED || mode == ATA_DITER_ENABLED_REVERSE) && |
| 285 | !ata_dev_enabled(dev)) |
| 286 | goto next; |
| 287 | return dev; |
| 288 | } |
| 289 | |
| 290 | /** |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 291 | * ata_dev_phys_link - find physical link for a device |
| 292 | * @dev: ATA device to look up physical link for |
| 293 | * |
| 294 | * Look up physical link which @dev is attached to. Note that |
| 295 | * this is different from @dev->link only when @dev is on slave |
| 296 | * link. For all other cases, it's the same as @dev->link. |
| 297 | * |
| 298 | * LOCKING: |
| 299 | * Don't care. |
| 300 | * |
| 301 | * RETURNS: |
| 302 | * Pointer to the found physical link. |
| 303 | */ |
| 304 | struct ata_link *ata_dev_phys_link(struct ata_device *dev) |
| 305 | { |
| 306 | struct ata_port *ap = dev->link->ap; |
| 307 | |
| 308 | if (!ap->slave_link) |
| 309 | return dev->link; |
| 310 | if (!dev->devno) |
| 311 | return &ap->link; |
| 312 | return ap->slave_link; |
| 313 | } |
| 314 | |
| 315 | /** |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 316 | * ata_force_cbl - force cable type according to libata.force |
Randy Dunlap | 4cdfa1b | 2008-02-22 12:21:37 -0800 | [diff] [blame] | 317 | * @ap: ATA port of interest |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 318 | * |
| 319 | * Force cable type according to libata.force and whine about it. |
| 320 | * The last entry which has matching port number is used, so it |
| 321 | * can be specified as part of device force parameters. For |
| 322 | * example, both "a:40c,1.00:udma4" and "1.00:40c,udma4" have the |
| 323 | * same effect. |
| 324 | * |
| 325 | * LOCKING: |
| 326 | * EH context. |
| 327 | */ |
| 328 | void ata_force_cbl(struct ata_port *ap) |
| 329 | { |
| 330 | int i; |
| 331 | |
| 332 | for (i = ata_force_tbl_size - 1; i >= 0; i--) { |
| 333 | const struct ata_force_ent *fe = &ata_force_tbl[i]; |
| 334 | |
| 335 | if (fe->port != -1 && fe->port != ap->print_id) |
| 336 | continue; |
| 337 | |
| 338 | if (fe->param.cbl == ATA_CBL_NONE) |
| 339 | continue; |
| 340 | |
| 341 | ap->cbl = fe->param.cbl; |
| 342 | ata_port_printk(ap, KERN_NOTICE, |
| 343 | "FORCE: cable set to %s\n", fe->param.name); |
| 344 | return; |
| 345 | } |
| 346 | } |
| 347 | |
| 348 | /** |
Tejun Heo | 05944bd | 2008-08-13 20:19:09 +0900 | [diff] [blame] | 349 | * ata_force_link_limits - force link limits according to libata.force |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 350 | * @link: ATA link of interest |
| 351 | * |
Tejun Heo | 05944bd | 2008-08-13 20:19:09 +0900 | [diff] [blame] | 352 | * Force link flags and SATA spd limit according to libata.force |
| 353 | * and whine about it. When only the port part is specified |
| 354 | * (e.g. 1:), the limit applies to all links connected to both |
| 355 | * the host link and all fan-out ports connected via PMP. If the |
| 356 | * device part is specified as 0 (e.g. 1.00:), it specifies the |
| 357 | * first fan-out link not the host link. Device number 15 always |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 358 | * points to the host link whether PMP is attached or not. If the |
| 359 | * controller has slave link, device number 16 points to it. |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 360 | * |
| 361 | * LOCKING: |
| 362 | * EH context. |
| 363 | */ |
Tejun Heo | 05944bd | 2008-08-13 20:19:09 +0900 | [diff] [blame] | 364 | static void ata_force_link_limits(struct ata_link *link) |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 365 | { |
Tejun Heo | 05944bd | 2008-08-13 20:19:09 +0900 | [diff] [blame] | 366 | bool did_spd = false; |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 367 | int linkno = link->pmp; |
| 368 | int i; |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 369 | |
| 370 | if (ata_is_host_link(link)) |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 371 | linkno += 15; |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 372 | |
| 373 | for (i = ata_force_tbl_size - 1; i >= 0; i--) { |
| 374 | const struct ata_force_ent *fe = &ata_force_tbl[i]; |
| 375 | |
| 376 | if (fe->port != -1 && fe->port != link->ap->print_id) |
| 377 | continue; |
| 378 | |
| 379 | if (fe->device != -1 && fe->device != linkno) |
| 380 | continue; |
| 381 | |
Tejun Heo | 05944bd | 2008-08-13 20:19:09 +0900 | [diff] [blame] | 382 | /* only honor the first spd limit */ |
| 383 | if (!did_spd && fe->param.spd_limit) { |
| 384 | link->hw_sata_spd_limit = (1 << fe->param.spd_limit) - 1; |
| 385 | ata_link_printk(link, KERN_NOTICE, |
| 386 | "FORCE: PHY spd limit set to %s\n", |
| 387 | fe->param.name); |
| 388 | did_spd = true; |
| 389 | } |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 390 | |
Tejun Heo | 05944bd | 2008-08-13 20:19:09 +0900 | [diff] [blame] | 391 | /* let lflags stack */ |
| 392 | if (fe->param.lflags) { |
| 393 | link->flags |= fe->param.lflags; |
| 394 | ata_link_printk(link, KERN_NOTICE, |
| 395 | "FORCE: link flag 0x%x forced -> 0x%x\n", |
| 396 | fe->param.lflags, link->flags); |
| 397 | } |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 398 | } |
| 399 | } |
| 400 | |
| 401 | /** |
| 402 | * ata_force_xfermask - force xfermask according to libata.force |
| 403 | * @dev: ATA device of interest |
| 404 | * |
| 405 | * Force xfer_mask according to libata.force and whine about it. |
| 406 | * For consistency with link selection, device number 15 selects |
| 407 | * the first device connected to the host link. |
| 408 | * |
| 409 | * LOCKING: |
| 410 | * EH context. |
| 411 | */ |
| 412 | static void ata_force_xfermask(struct ata_device *dev) |
| 413 | { |
| 414 | int devno = dev->link->pmp + dev->devno; |
| 415 | int alt_devno = devno; |
| 416 | int i; |
| 417 | |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 418 | /* allow n.15/16 for devices attached to host port */ |
| 419 | if (ata_is_host_link(dev->link)) |
| 420 | alt_devno += 15; |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 421 | |
| 422 | for (i = ata_force_tbl_size - 1; i >= 0; i--) { |
| 423 | const struct ata_force_ent *fe = &ata_force_tbl[i]; |
| 424 | unsigned long pio_mask, mwdma_mask, udma_mask; |
| 425 | |
| 426 | if (fe->port != -1 && fe->port != dev->link->ap->print_id) |
| 427 | continue; |
| 428 | |
| 429 | if (fe->device != -1 && fe->device != devno && |
| 430 | fe->device != alt_devno) |
| 431 | continue; |
| 432 | |
| 433 | if (!fe->param.xfer_mask) |
| 434 | continue; |
| 435 | |
| 436 | ata_unpack_xfermask(fe->param.xfer_mask, |
| 437 | &pio_mask, &mwdma_mask, &udma_mask); |
| 438 | if (udma_mask) |
| 439 | dev->udma_mask = udma_mask; |
| 440 | else if (mwdma_mask) { |
| 441 | dev->udma_mask = 0; |
| 442 | dev->mwdma_mask = mwdma_mask; |
| 443 | } else { |
| 444 | dev->udma_mask = 0; |
| 445 | dev->mwdma_mask = 0; |
| 446 | dev->pio_mask = pio_mask; |
| 447 | } |
| 448 | |
| 449 | ata_dev_printk(dev, KERN_NOTICE, |
| 450 | "FORCE: xfer_mask set to %s\n", fe->param.name); |
| 451 | return; |
| 452 | } |
| 453 | } |
| 454 | |
| 455 | /** |
| 456 | * ata_force_horkage - force horkage according to libata.force |
| 457 | * @dev: ATA device of interest |
| 458 | * |
| 459 | * Force horkage according to libata.force and whine about it. |
| 460 | * For consistency with link selection, device number 15 selects |
| 461 | * the first device connected to the host link. |
| 462 | * |
| 463 | * LOCKING: |
| 464 | * EH context. |
| 465 | */ |
| 466 | static void ata_force_horkage(struct ata_device *dev) |
| 467 | { |
| 468 | int devno = dev->link->pmp + dev->devno; |
| 469 | int alt_devno = devno; |
| 470 | int i; |
| 471 | |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 472 | /* allow n.15/16 for devices attached to host port */ |
| 473 | if (ata_is_host_link(dev->link)) |
| 474 | alt_devno += 15; |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 475 | |
| 476 | for (i = 0; i < ata_force_tbl_size; i++) { |
| 477 | const struct ata_force_ent *fe = &ata_force_tbl[i]; |
| 478 | |
| 479 | if (fe->port != -1 && fe->port != dev->link->ap->print_id) |
| 480 | continue; |
| 481 | |
| 482 | if (fe->device != -1 && fe->device != devno && |
| 483 | fe->device != alt_devno) |
| 484 | continue; |
| 485 | |
| 486 | if (!(~dev->horkage & fe->param.horkage_on) && |
| 487 | !(dev->horkage & fe->param.horkage_off)) |
| 488 | continue; |
| 489 | |
| 490 | dev->horkage |= fe->param.horkage_on; |
| 491 | dev->horkage &= ~fe->param.horkage_off; |
| 492 | |
| 493 | ata_dev_printk(dev, KERN_NOTICE, |
| 494 | "FORCE: horkage modified (%s)\n", fe->param.name); |
| 495 | } |
| 496 | } |
| 497 | |
| 498 | /** |
Tejun Heo | 436d34b | 2008-04-02 17:28:46 +0900 | [diff] [blame] | 499 | * atapi_cmd_type - Determine ATAPI command type from SCSI opcode |
| 500 | * @opcode: SCSI opcode |
| 501 | * |
| 502 | * Determine ATAPI command type from @opcode. |
| 503 | * |
| 504 | * LOCKING: |
| 505 | * None. |
| 506 | * |
| 507 | * RETURNS: |
| 508 | * ATAPI_{READ|WRITE|READ_CD|PASS_THRU|MISC} |
| 509 | */ |
| 510 | int atapi_cmd_type(u8 opcode) |
| 511 | { |
| 512 | switch (opcode) { |
| 513 | case GPCMD_READ_10: |
| 514 | case GPCMD_READ_12: |
| 515 | return ATAPI_READ; |
| 516 | |
| 517 | case GPCMD_WRITE_10: |
| 518 | case GPCMD_WRITE_12: |
| 519 | case GPCMD_WRITE_AND_VERIFY_10: |
| 520 | return ATAPI_WRITE; |
| 521 | |
| 522 | case GPCMD_READ_CD: |
| 523 | case GPCMD_READ_CD_MSF: |
| 524 | return ATAPI_READ_CD; |
| 525 | |
Tejun Heo | e52dcc4 | 2008-04-02 17:35:19 +0900 | [diff] [blame] | 526 | case ATA_16: |
| 527 | case ATA_12: |
| 528 | if (atapi_passthru16) |
| 529 | return ATAPI_PASS_THRU; |
| 530 | /* fall thru */ |
Tejun Heo | 436d34b | 2008-04-02 17:28:46 +0900 | [diff] [blame] | 531 | default: |
| 532 | return ATAPI_MISC; |
| 533 | } |
| 534 | } |
| 535 | |
| 536 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | * ata_tf_to_fis - Convert ATA taskfile to SATA FIS structure |
| 538 | * @tf: Taskfile to convert |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | * @pmp: Port multiplier port |
Tejun Heo | 9977126 | 2007-07-16 14:29:38 +0900 | [diff] [blame] | 540 | * @is_cmd: This FIS is for command |
| 541 | * @fis: Buffer into which data will output |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | * |
| 543 | * Converts a standard ATA taskfile to a Serial ATA |
| 544 | * FIS structure (Register - Host to Device). |
| 545 | * |
| 546 | * LOCKING: |
| 547 | * Inherited from caller. |
| 548 | */ |
Tejun Heo | 9977126 | 2007-07-16 14:29:38 +0900 | [diff] [blame] | 549 | 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] | 550 | { |
Tejun Heo | 9977126 | 2007-07-16 14:29:38 +0900 | [diff] [blame] | 551 | fis[0] = 0x27; /* Register - Host to Device FIS */ |
| 552 | fis[1] = pmp & 0xf; /* Port multiplier number*/ |
| 553 | if (is_cmd) |
| 554 | fis[1] |= (1 << 7); /* bit 7 indicates Command FIS */ |
| 555 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | fis[2] = tf->command; |
| 557 | fis[3] = tf->feature; |
| 558 | |
| 559 | fis[4] = tf->lbal; |
| 560 | fis[5] = tf->lbam; |
| 561 | fis[6] = tf->lbah; |
| 562 | fis[7] = tf->device; |
| 563 | |
| 564 | fis[8] = tf->hob_lbal; |
| 565 | fis[9] = tf->hob_lbam; |
| 566 | fis[10] = tf->hob_lbah; |
| 567 | fis[11] = tf->hob_feature; |
| 568 | |
| 569 | fis[12] = tf->nsect; |
| 570 | fis[13] = tf->hob_nsect; |
| 571 | fis[14] = 0; |
| 572 | fis[15] = tf->ctl; |
| 573 | |
| 574 | fis[16] = 0; |
| 575 | fis[17] = 0; |
| 576 | fis[18] = 0; |
| 577 | fis[19] = 0; |
| 578 | } |
| 579 | |
| 580 | /** |
| 581 | * ata_tf_from_fis - Convert SATA FIS to ATA taskfile |
| 582 | * @fis: Buffer from which data will be input |
| 583 | * @tf: Taskfile to output |
| 584 | * |
Mark Lord | e12a1be | 2005-11-12 18:55:45 -0500 | [diff] [blame] | 585 | * Converts a serial ATA FIS structure to a standard ATA taskfile. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | * |
| 587 | * LOCKING: |
| 588 | * Inherited from caller. |
| 589 | */ |
| 590 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 591 | void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | { |
| 593 | tf->command = fis[2]; /* status */ |
| 594 | tf->feature = fis[3]; /* error */ |
| 595 | |
| 596 | tf->lbal = fis[4]; |
| 597 | tf->lbam = fis[5]; |
| 598 | tf->lbah = fis[6]; |
| 599 | tf->device = fis[7]; |
| 600 | |
| 601 | tf->hob_lbal = fis[8]; |
| 602 | tf->hob_lbam = fis[9]; |
| 603 | tf->hob_lbah = fis[10]; |
| 604 | |
| 605 | tf->nsect = fis[12]; |
| 606 | tf->hob_nsect = fis[13]; |
| 607 | } |
| 608 | |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 609 | static const u8 ata_rw_cmds[] = { |
| 610 | /* pio multi */ |
| 611 | ATA_CMD_READ_MULTI, |
| 612 | ATA_CMD_WRITE_MULTI, |
| 613 | ATA_CMD_READ_MULTI_EXT, |
| 614 | ATA_CMD_WRITE_MULTI_EXT, |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 615 | 0, |
| 616 | 0, |
| 617 | 0, |
| 618 | ATA_CMD_WRITE_MULTI_FUA_EXT, |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 619 | /* pio */ |
| 620 | ATA_CMD_PIO_READ, |
| 621 | ATA_CMD_PIO_WRITE, |
| 622 | ATA_CMD_PIO_READ_EXT, |
| 623 | ATA_CMD_PIO_WRITE_EXT, |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 624 | 0, |
| 625 | 0, |
| 626 | 0, |
| 627 | 0, |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 628 | /* dma */ |
| 629 | ATA_CMD_READ, |
| 630 | ATA_CMD_WRITE, |
| 631 | ATA_CMD_READ_EXT, |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 632 | ATA_CMD_WRITE_EXT, |
| 633 | 0, |
| 634 | 0, |
| 635 | 0, |
| 636 | ATA_CMD_WRITE_FUA_EXT |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 637 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | |
| 639 | /** |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 640 | * ata_rwcmd_protocol - set taskfile r/w commands and protocol |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 641 | * @tf: command to examine and configure |
| 642 | * @dev: device tf belongs to |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | * |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 644 | * Examine the device configuration and tf->flags to calculate |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 645 | * the proper read/write commands and protocol to use. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | * |
| 647 | * LOCKING: |
| 648 | * caller. |
| 649 | */ |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 650 | 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] | 651 | { |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 652 | u8 cmd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 654 | int index, fua, lba48, write; |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 655 | |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 656 | fua = (tf->flags & ATA_TFLAG_FUA) ? 4 : 0; |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 657 | lba48 = (tf->flags & ATA_TFLAG_LBA48) ? 2 : 0; |
| 658 | write = (tf->flags & ATA_TFLAG_WRITE) ? 1 : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 660 | if (dev->flags & ATA_DFLAG_PIO) { |
| 661 | tf->protocol = ATA_PROT_PIO; |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 662 | index = dev->multi_count ? 0 : 8; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 663 | } else if (lba48 && (dev->link->ap->flags & ATA_FLAG_PIO_LBA48)) { |
Alan Cox | 8d238e0 | 2006-01-17 20:50:31 +0000 | [diff] [blame] | 664 | /* Unable to use DMA due to host limitation */ |
| 665 | tf->protocol = ATA_PROT_PIO; |
Albert Lee | 0565c26 | 2006-02-13 18:55:25 +0800 | [diff] [blame] | 666 | index = dev->multi_count ? 0 : 8; |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 667 | } else { |
| 668 | tf->protocol = ATA_PROT_DMA; |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 669 | index = 16; |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 670 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 672 | cmd = ata_rw_cmds[index + fua + lba48 + write]; |
| 673 | if (cmd) { |
| 674 | tf->command = cmd; |
| 675 | return 0; |
| 676 | } |
| 677 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | } |
| 679 | |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 680 | /** |
Tejun Heo | 35b649f | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 681 | * ata_tf_read_block - Read block address from ATA taskfile |
| 682 | * @tf: ATA taskfile of interest |
| 683 | * @dev: ATA device @tf belongs to |
| 684 | * |
| 685 | * LOCKING: |
| 686 | * None. |
| 687 | * |
| 688 | * Read block address from @tf. This function can handle all |
| 689 | * three address formats - LBA, LBA48 and CHS. tf->protocol and |
| 690 | * flags select the address format to use. |
| 691 | * |
| 692 | * RETURNS: |
| 693 | * Block address read from @tf. |
| 694 | */ |
| 695 | u64 ata_tf_read_block(struct ata_taskfile *tf, struct ata_device *dev) |
| 696 | { |
| 697 | u64 block = 0; |
| 698 | |
| 699 | if (tf->flags & ATA_TFLAG_LBA) { |
| 700 | if (tf->flags & ATA_TFLAG_LBA48) { |
| 701 | block |= (u64)tf->hob_lbah << 40; |
| 702 | block |= (u64)tf->hob_lbam << 32; |
Roland Dreier | 44901a9 | 2008-11-04 10:34:48 -0800 | [diff] [blame] | 703 | block |= (u64)tf->hob_lbal << 24; |
Tejun Heo | 35b649f | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 704 | } else |
| 705 | block |= (tf->device & 0xf) << 24; |
| 706 | |
| 707 | block |= tf->lbah << 16; |
| 708 | block |= tf->lbam << 8; |
| 709 | block |= tf->lbal; |
| 710 | } else { |
| 711 | u32 cyl, head, sect; |
| 712 | |
| 713 | cyl = tf->lbam | (tf->lbah << 8); |
| 714 | head = tf->device & 0xf; |
| 715 | sect = tf->lbal; |
| 716 | |
Tejun Heo | ac8672e | 2009-08-16 21:21:21 +0900 | [diff] [blame] | 717 | if (!sect) { |
| 718 | ata_dev_printk(dev, KERN_WARNING, "device reported " |
| 719 | "invalid CHS sector 0\n"); |
| 720 | sect = 1; /* oh well */ |
| 721 | } |
| 722 | |
| 723 | block = (cyl * dev->heads + head) * dev->sectors + sect - 1; |
Tejun Heo | 35b649f | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 724 | } |
| 725 | |
| 726 | return block; |
| 727 | } |
| 728 | |
| 729 | /** |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 730 | * ata_build_rw_tf - Build ATA taskfile for given read/write request |
| 731 | * @tf: Target ATA taskfile |
| 732 | * @dev: ATA device @tf belongs to |
| 733 | * @block: Block address |
| 734 | * @n_block: Number of blocks |
| 735 | * @tf_flags: RW/FUA etc... |
| 736 | * @tag: tag |
| 737 | * |
| 738 | * LOCKING: |
| 739 | * None. |
| 740 | * |
| 741 | * Build ATA taskfile @tf for read/write request described by |
| 742 | * @block, @n_block, @tf_flags and @tag on @dev. |
| 743 | * |
| 744 | * RETURNS: |
| 745 | * |
| 746 | * 0 on success, -ERANGE if the request is too large for @dev, |
| 747 | * -EINVAL if the request is invalid. |
| 748 | */ |
| 749 | int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev, |
| 750 | u64 block, u32 n_block, unsigned int tf_flags, |
| 751 | unsigned int tag) |
| 752 | { |
| 753 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 754 | tf->flags |= tf_flags; |
| 755 | |
Tejun Heo | 6d1245b | 2007-02-20 23:20:27 +0900 | [diff] [blame] | 756 | if (ata_ncq_enabled(dev) && likely(tag != ATA_TAG_INTERNAL)) { |
Tejun Heo | bd056d7 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 757 | /* yay, NCQ */ |
| 758 | if (!lba_48_ok(block, n_block)) |
| 759 | return -ERANGE; |
| 760 | |
| 761 | tf->protocol = ATA_PROT_NCQ; |
| 762 | tf->flags |= ATA_TFLAG_LBA | ATA_TFLAG_LBA48; |
| 763 | |
| 764 | if (tf->flags & ATA_TFLAG_WRITE) |
| 765 | tf->command = ATA_CMD_FPDMA_WRITE; |
| 766 | else |
| 767 | tf->command = ATA_CMD_FPDMA_READ; |
| 768 | |
| 769 | tf->nsect = tag << 3; |
| 770 | tf->hob_feature = (n_block >> 8) & 0xff; |
| 771 | tf->feature = n_block & 0xff; |
| 772 | |
| 773 | tf->hob_lbah = (block >> 40) & 0xff; |
| 774 | tf->hob_lbam = (block >> 32) & 0xff; |
| 775 | tf->hob_lbal = (block >> 24) & 0xff; |
| 776 | tf->lbah = (block >> 16) & 0xff; |
| 777 | tf->lbam = (block >> 8) & 0xff; |
| 778 | tf->lbal = block & 0xff; |
| 779 | |
| 780 | tf->device = 1 << 6; |
| 781 | if (tf->flags & ATA_TFLAG_FUA) |
| 782 | tf->device |= 1 << 7; |
| 783 | } else if (dev->flags & ATA_DFLAG_LBA) { |
| 784 | tf->flags |= ATA_TFLAG_LBA; |
| 785 | |
| 786 | if (lba_28_ok(block, n_block)) { |
| 787 | /* use LBA28 */ |
| 788 | tf->device |= (block >> 24) & 0xf; |
| 789 | } else if (lba_48_ok(block, n_block)) { |
| 790 | if (!(dev->flags & ATA_DFLAG_LBA48)) |
| 791 | return -ERANGE; |
| 792 | |
| 793 | /* use LBA48 */ |
| 794 | tf->flags |= ATA_TFLAG_LBA48; |
| 795 | |
| 796 | tf->hob_nsect = (n_block >> 8) & 0xff; |
| 797 | |
| 798 | tf->hob_lbah = (block >> 40) & 0xff; |
| 799 | tf->hob_lbam = (block >> 32) & 0xff; |
| 800 | tf->hob_lbal = (block >> 24) & 0xff; |
| 801 | } else |
| 802 | /* request too large even for LBA48 */ |
| 803 | return -ERANGE; |
| 804 | |
| 805 | if (unlikely(ata_rwcmd_protocol(tf, dev) < 0)) |
| 806 | return -EINVAL; |
| 807 | |
| 808 | tf->nsect = n_block & 0xff; |
| 809 | |
| 810 | tf->lbah = (block >> 16) & 0xff; |
| 811 | tf->lbam = (block >> 8) & 0xff; |
| 812 | tf->lbal = block & 0xff; |
| 813 | |
| 814 | tf->device |= ATA_LBA; |
| 815 | } else { |
| 816 | /* CHS */ |
| 817 | u32 sect, head, cyl, track; |
| 818 | |
| 819 | /* The request -may- be too large for CHS addressing. */ |
| 820 | if (!lba_28_ok(block, n_block)) |
| 821 | return -ERANGE; |
| 822 | |
| 823 | if (unlikely(ata_rwcmd_protocol(tf, dev) < 0)) |
| 824 | return -EINVAL; |
| 825 | |
| 826 | /* Convert LBA to CHS */ |
| 827 | track = (u32)block / dev->sectors; |
| 828 | cyl = track / dev->heads; |
| 829 | head = track % dev->heads; |
| 830 | sect = (u32)block % dev->sectors + 1; |
| 831 | |
| 832 | DPRINTK("block %u track %u cyl %u head %u sect %u\n", |
| 833 | (u32)block, track, cyl, head, sect); |
| 834 | |
| 835 | /* Check whether the converted CHS can fit. |
| 836 | Cylinder: 0-65535 |
| 837 | Head: 0-15 |
| 838 | Sector: 1-255*/ |
| 839 | if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect)) |
| 840 | return -ERANGE; |
| 841 | |
| 842 | tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */ |
| 843 | tf->lbal = sect; |
| 844 | tf->lbam = cyl; |
| 845 | tf->lbah = cyl >> 8; |
| 846 | tf->device |= head; |
| 847 | } |
| 848 | |
| 849 | return 0; |
| 850 | } |
| 851 | |
| 852 | /** |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 853 | * ata_pack_xfermask - Pack pio, mwdma and udma masks into xfer_mask |
| 854 | * @pio_mask: pio_mask |
| 855 | * @mwdma_mask: mwdma_mask |
| 856 | * @udma_mask: udma_mask |
| 857 | * |
| 858 | * Pack @pio_mask, @mwdma_mask and @udma_mask into a single |
| 859 | * unsigned int xfer_mask. |
| 860 | * |
| 861 | * LOCKING: |
| 862 | * None. |
| 863 | * |
| 864 | * RETURNS: |
| 865 | * Packed xfer_mask. |
| 866 | */ |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 867 | unsigned long ata_pack_xfermask(unsigned long pio_mask, |
| 868 | unsigned long mwdma_mask, |
| 869 | unsigned long udma_mask) |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 870 | { |
| 871 | return ((pio_mask << ATA_SHIFT_PIO) & ATA_MASK_PIO) | |
| 872 | ((mwdma_mask << ATA_SHIFT_MWDMA) & ATA_MASK_MWDMA) | |
| 873 | ((udma_mask << ATA_SHIFT_UDMA) & ATA_MASK_UDMA); |
| 874 | } |
| 875 | |
Tejun Heo | c0489e4 | 2006-03-24 14:07:49 +0900 | [diff] [blame] | 876 | /** |
| 877 | * ata_unpack_xfermask - Unpack xfer_mask into pio, mwdma and udma masks |
| 878 | * @xfer_mask: xfer_mask to unpack |
| 879 | * @pio_mask: resulting pio_mask |
| 880 | * @mwdma_mask: resulting mwdma_mask |
| 881 | * @udma_mask: resulting udma_mask |
| 882 | * |
| 883 | * Unpack @xfer_mask into @pio_mask, @mwdma_mask and @udma_mask. |
| 884 | * Any NULL distination masks will be ignored. |
| 885 | */ |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 886 | void ata_unpack_xfermask(unsigned long xfer_mask, unsigned long *pio_mask, |
| 887 | unsigned long *mwdma_mask, unsigned long *udma_mask) |
Tejun Heo | c0489e4 | 2006-03-24 14:07:49 +0900 | [diff] [blame] | 888 | { |
| 889 | if (pio_mask) |
| 890 | *pio_mask = (xfer_mask & ATA_MASK_PIO) >> ATA_SHIFT_PIO; |
| 891 | if (mwdma_mask) |
| 892 | *mwdma_mask = (xfer_mask & ATA_MASK_MWDMA) >> ATA_SHIFT_MWDMA; |
| 893 | if (udma_mask) |
| 894 | *udma_mask = (xfer_mask & ATA_MASK_UDMA) >> ATA_SHIFT_UDMA; |
| 895 | } |
| 896 | |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 897 | static const struct ata_xfer_ent { |
Tejun Heo | be9a50c | 2006-03-31 22:48:52 +0900 | [diff] [blame] | 898 | int shift, bits; |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 899 | u8 base; |
| 900 | } ata_xfer_tbl[] = { |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 901 | { ATA_SHIFT_PIO, ATA_NR_PIO_MODES, XFER_PIO_0 }, |
| 902 | { ATA_SHIFT_MWDMA, ATA_NR_MWDMA_MODES, XFER_MW_DMA_0 }, |
| 903 | { ATA_SHIFT_UDMA, ATA_NR_UDMA_MODES, XFER_UDMA_0 }, |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 904 | { -1, }, |
| 905 | }; |
| 906 | |
| 907 | /** |
| 908 | * ata_xfer_mask2mode - Find matching XFER_* for the given xfer_mask |
| 909 | * @xfer_mask: xfer_mask of interest |
| 910 | * |
| 911 | * Return matching XFER_* value for @xfer_mask. Only the highest |
| 912 | * bit of @xfer_mask is considered. |
| 913 | * |
| 914 | * LOCKING: |
| 915 | * None. |
| 916 | * |
| 917 | * RETURNS: |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 918 | * Matching XFER_* value, 0xff if no match found. |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 919 | */ |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 920 | u8 ata_xfer_mask2mode(unsigned long xfer_mask) |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 921 | { |
| 922 | int highbit = fls(xfer_mask) - 1; |
| 923 | const struct ata_xfer_ent *ent; |
| 924 | |
| 925 | for (ent = ata_xfer_tbl; ent->shift >= 0; ent++) |
| 926 | if (highbit >= ent->shift && highbit < ent->shift + ent->bits) |
| 927 | return ent->base + highbit - ent->shift; |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 928 | return 0xff; |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 929 | } |
| 930 | |
| 931 | /** |
| 932 | * ata_xfer_mode2mask - Find matching xfer_mask for XFER_* |
| 933 | * @xfer_mode: XFER_* of interest |
| 934 | * |
| 935 | * Return matching xfer_mask for @xfer_mode. |
| 936 | * |
| 937 | * LOCKING: |
| 938 | * None. |
| 939 | * |
| 940 | * RETURNS: |
| 941 | * Matching xfer_mask, 0 if no match found. |
| 942 | */ |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 943 | unsigned long ata_xfer_mode2mask(u8 xfer_mode) |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 944 | { |
| 945 | const struct ata_xfer_ent *ent; |
| 946 | |
| 947 | for (ent = ata_xfer_tbl; ent->shift >= 0; ent++) |
| 948 | if (xfer_mode >= ent->base && xfer_mode < ent->base + ent->bits) |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 949 | return ((2 << (ent->shift + xfer_mode - ent->base)) - 1) |
| 950 | & ~((1 << ent->shift) - 1); |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 951 | return 0; |
| 952 | } |
| 953 | |
| 954 | /** |
| 955 | * ata_xfer_mode2shift - Find matching xfer_shift for XFER_* |
| 956 | * @xfer_mode: XFER_* of interest |
| 957 | * |
| 958 | * Return matching xfer_shift for @xfer_mode. |
| 959 | * |
| 960 | * LOCKING: |
| 961 | * None. |
| 962 | * |
| 963 | * RETURNS: |
| 964 | * Matching xfer_shift, -1 if no match found. |
| 965 | */ |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 966 | int ata_xfer_mode2shift(unsigned long xfer_mode) |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 967 | { |
| 968 | const struct ata_xfer_ent *ent; |
| 969 | |
| 970 | for (ent = ata_xfer_tbl; ent->shift >= 0; ent++) |
| 971 | if (xfer_mode >= ent->base && xfer_mode < ent->base + ent->bits) |
| 972 | return ent->shift; |
| 973 | return -1; |
| 974 | } |
| 975 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | /** |
Tejun Heo | 1da7b0d | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 977 | * ata_mode_string - convert xfer_mask to string |
| 978 | * @xfer_mask: mask of bits supported; only highest bit counts. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | * |
| 980 | * Determine string which represents the highest speed |
Tejun Heo | 1da7b0d | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 981 | * (highest bit in @modemask). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | * |
| 983 | * LOCKING: |
| 984 | * None. |
| 985 | * |
| 986 | * RETURNS: |
| 987 | * Constant C string representing highest speed listed in |
Tejun Heo | 1da7b0d | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 988 | * @mode_mask, or the constant C string "<n/a>". |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | */ |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 990 | const char *ata_mode_string(unsigned long xfer_mask) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 991 | { |
Tejun Heo | 75f554b | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 992 | static const char * const xfer_mode_str[] = { |
| 993 | "PIO0", |
| 994 | "PIO1", |
| 995 | "PIO2", |
| 996 | "PIO3", |
| 997 | "PIO4", |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 998 | "PIO5", |
| 999 | "PIO6", |
Tejun Heo | 75f554b | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 1000 | "MWDMA0", |
| 1001 | "MWDMA1", |
| 1002 | "MWDMA2", |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 1003 | "MWDMA3", |
| 1004 | "MWDMA4", |
Tejun Heo | 75f554b | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 1005 | "UDMA/16", |
| 1006 | "UDMA/25", |
| 1007 | "UDMA/33", |
| 1008 | "UDMA/44", |
| 1009 | "UDMA/66", |
| 1010 | "UDMA/100", |
| 1011 | "UDMA/133", |
| 1012 | "UDMA7", |
| 1013 | }; |
Tejun Heo | 1da7b0d | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 1014 | int highbit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1015 | |
Tejun Heo | 1da7b0d | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 1016 | highbit = fls(xfer_mask) - 1; |
| 1017 | if (highbit >= 0 && highbit < ARRAY_SIZE(xfer_mode_str)) |
| 1018 | return xfer_mode_str[highbit]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | return "<n/a>"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | } |
| 1021 | |
Tejun Heo | 4c360c8 | 2006-04-01 01:38:17 +0900 | [diff] [blame] | 1022 | static const char *sata_spd_string(unsigned int spd) |
| 1023 | { |
| 1024 | static const char * const spd_str[] = { |
| 1025 | "1.5 Gbps", |
| 1026 | "3.0 Gbps", |
Shane Huang | 8522ee2 | 2008-12-30 11:00:37 +0800 | [diff] [blame] | 1027 | "6.0 Gbps", |
Tejun Heo | 4c360c8 | 2006-04-01 01:38:17 +0900 | [diff] [blame] | 1028 | }; |
| 1029 | |
| 1030 | if (spd == 0 || (spd - 1) >= ARRAY_SIZE(spd_str)) |
| 1031 | return "<unknown>"; |
| 1032 | return spd_str[spd - 1]; |
| 1033 | } |
| 1034 | |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1035 | static int ata_dev_set_dipm(struct ata_device *dev, enum link_pm policy) |
| 1036 | { |
| 1037 | struct ata_link *link = dev->link; |
| 1038 | struct ata_port *ap = link->ap; |
| 1039 | u32 scontrol; |
| 1040 | unsigned int err_mask; |
| 1041 | int rc; |
| 1042 | |
| 1043 | /* |
| 1044 | * disallow DIPM for drivers which haven't set |
| 1045 | * ATA_FLAG_IPM. This is because when DIPM is enabled, |
| 1046 | * phy ready will be set in the interrupt status on |
| 1047 | * state changes, which will cause some drivers to |
| 1048 | * think there are errors - additionally drivers will |
| 1049 | * need to disable hot plug. |
| 1050 | */ |
| 1051 | if (!(ap->flags & ATA_FLAG_IPM) || !ata_dev_enabled(dev)) { |
| 1052 | ap->pm_policy = NOT_AVAILABLE; |
| 1053 | return -EINVAL; |
| 1054 | } |
| 1055 | |
| 1056 | /* |
| 1057 | * For DIPM, we will only enable it for the |
| 1058 | * min_power setting. |
| 1059 | * |
| 1060 | * Why? Because Disks are too stupid to know that |
| 1061 | * If the host rejects a request to go to SLUMBER |
| 1062 | * they should retry at PARTIAL, and instead it |
| 1063 | * just would give up. So, for medium_power to |
| 1064 | * work at all, we need to only allow HIPM. |
| 1065 | */ |
| 1066 | rc = sata_scr_read(link, SCR_CONTROL, &scontrol); |
| 1067 | if (rc) |
| 1068 | return rc; |
| 1069 | |
| 1070 | switch (policy) { |
| 1071 | case MIN_POWER: |
| 1072 | /* no restrictions on IPM transitions */ |
| 1073 | scontrol &= ~(0x3 << 8); |
| 1074 | rc = sata_scr_write(link, SCR_CONTROL, scontrol); |
| 1075 | if (rc) |
| 1076 | return rc; |
| 1077 | |
| 1078 | /* enable DIPM */ |
| 1079 | if (dev->flags & ATA_DFLAG_DIPM) |
| 1080 | err_mask = ata_dev_set_feature(dev, |
| 1081 | SETFEATURES_SATA_ENABLE, SATA_DIPM); |
| 1082 | break; |
| 1083 | case MEDIUM_POWER: |
| 1084 | /* allow IPM to PARTIAL */ |
| 1085 | scontrol &= ~(0x1 << 8); |
| 1086 | scontrol |= (0x2 << 8); |
| 1087 | rc = sata_scr_write(link, SCR_CONTROL, scontrol); |
| 1088 | if (rc) |
| 1089 | return rc; |
| 1090 | |
Kristen Carlson Accardi | f5456b6 | 2007-11-02 16:37:08 -0700 | [diff] [blame] | 1091 | /* |
| 1092 | * we don't have to disable DIPM since IPM flags |
| 1093 | * disallow transitions to SLUMBER, which effectively |
| 1094 | * disable DIPM if it does not support PARTIAL |
| 1095 | */ |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1096 | break; |
| 1097 | case NOT_AVAILABLE: |
| 1098 | case MAX_PERFORMANCE: |
| 1099 | /* disable all IPM transitions */ |
| 1100 | scontrol |= (0x3 << 8); |
| 1101 | rc = sata_scr_write(link, SCR_CONTROL, scontrol); |
| 1102 | if (rc) |
| 1103 | return rc; |
| 1104 | |
Kristen Carlson Accardi | f5456b6 | 2007-11-02 16:37:08 -0700 | [diff] [blame] | 1105 | /* |
| 1106 | * we don't have to disable DIPM since IPM flags |
| 1107 | * disallow all transitions which effectively |
| 1108 | * disable DIPM anyway. |
| 1109 | */ |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1110 | break; |
| 1111 | } |
| 1112 | |
| 1113 | /* FIXME: handle SET FEATURES failure */ |
| 1114 | (void) err_mask; |
| 1115 | |
| 1116 | return 0; |
| 1117 | } |
| 1118 | |
| 1119 | /** |
| 1120 | * ata_dev_enable_pm - enable SATA interface power management |
Stephen Hemminger | 48166fd | 2007-10-31 10:00:27 -0700 | [diff] [blame] | 1121 | * @dev: device to enable power management |
| 1122 | * @policy: the link power management policy |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1123 | * |
| 1124 | * Enable SATA Interface power management. This will enable |
| 1125 | * Device Interface Power Management (DIPM) for min_power |
| 1126 | * policy, and then call driver specific callbacks for |
| 1127 | * enabling Host Initiated Power management. |
| 1128 | * |
| 1129 | * Locking: Caller. |
| 1130 | * Returns: -EINVAL if IPM is not supported, 0 otherwise. |
| 1131 | */ |
| 1132 | void ata_dev_enable_pm(struct ata_device *dev, enum link_pm policy) |
| 1133 | { |
| 1134 | int rc = 0; |
| 1135 | struct ata_port *ap = dev->link->ap; |
| 1136 | |
| 1137 | /* set HIPM first, then DIPM */ |
| 1138 | if (ap->ops->enable_pm) |
| 1139 | rc = ap->ops->enable_pm(ap, policy); |
| 1140 | if (rc) |
| 1141 | goto enable_pm_out; |
| 1142 | rc = ata_dev_set_dipm(dev, policy); |
| 1143 | |
| 1144 | enable_pm_out: |
| 1145 | if (rc) |
| 1146 | ap->pm_policy = MAX_PERFORMANCE; |
| 1147 | else |
| 1148 | ap->pm_policy = policy; |
| 1149 | return /* rc */; /* hopefully we can use 'rc' eventually */ |
| 1150 | } |
| 1151 | |
Stephen Rothwell | 1992a5e | 2007-10-31 14:53:32 +1100 | [diff] [blame] | 1152 | #ifdef CONFIG_PM |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1153 | /** |
| 1154 | * ata_dev_disable_pm - disable SATA interface power management |
Stephen Hemminger | 48166fd | 2007-10-31 10:00:27 -0700 | [diff] [blame] | 1155 | * @dev: device to disable power management |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1156 | * |
| 1157 | * Disable SATA Interface power management. This will disable |
| 1158 | * Device Interface Power Management (DIPM) without changing |
| 1159 | * policy, call driver specific callbacks for disabling Host |
| 1160 | * Initiated Power management. |
| 1161 | * |
| 1162 | * Locking: Caller. |
| 1163 | * Returns: void |
| 1164 | */ |
| 1165 | static void ata_dev_disable_pm(struct ata_device *dev) |
| 1166 | { |
| 1167 | struct ata_port *ap = dev->link->ap; |
| 1168 | |
| 1169 | ata_dev_set_dipm(dev, MAX_PERFORMANCE); |
| 1170 | if (ap->ops->disable_pm) |
| 1171 | ap->ops->disable_pm(ap); |
| 1172 | } |
Stephen Rothwell | 1992a5e | 2007-10-31 14:53:32 +1100 | [diff] [blame] | 1173 | #endif /* CONFIG_PM */ |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1174 | |
| 1175 | void ata_lpm_schedule(struct ata_port *ap, enum link_pm policy) |
| 1176 | { |
| 1177 | ap->pm_policy = policy; |
Tejun Heo | 3ec25eb | 2008-03-27 18:37:14 +0900 | [diff] [blame] | 1178 | ap->link.eh_info.action |= ATA_EH_LPM; |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1179 | ap->link.eh_info.flags |= ATA_EHI_NO_AUTOPSY; |
| 1180 | ata_port_schedule_eh(ap); |
| 1181 | } |
| 1182 | |
Stephen Rothwell | 1992a5e | 2007-10-31 14:53:32 +1100 | [diff] [blame] | 1183 | #ifdef CONFIG_PM |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1184 | static void ata_lpm_enable(struct ata_host *host) |
| 1185 | { |
| 1186 | struct ata_link *link; |
| 1187 | struct ata_port *ap; |
| 1188 | struct ata_device *dev; |
| 1189 | int i; |
| 1190 | |
| 1191 | for (i = 0; i < host->n_ports; i++) { |
| 1192 | ap = host->ports[i]; |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 1193 | ata_for_each_link(link, ap, EDGE) { |
| 1194 | ata_for_each_dev(dev, link, ALL) |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1195 | ata_dev_disable_pm(dev); |
| 1196 | } |
| 1197 | } |
| 1198 | } |
| 1199 | |
| 1200 | static void ata_lpm_disable(struct ata_host *host) |
| 1201 | { |
| 1202 | int i; |
| 1203 | |
| 1204 | for (i = 0; i < host->n_ports; i++) { |
| 1205 | struct ata_port *ap = host->ports[i]; |
| 1206 | ata_lpm_schedule(ap, ap->pm_policy); |
| 1207 | } |
| 1208 | } |
Stephen Rothwell | 1992a5e | 2007-10-31 14:53:32 +1100 | [diff] [blame] | 1209 | #endif /* CONFIG_PM */ |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 1210 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1211 | /** |
| 1212 | * ata_dev_classify - determine device type based on ATA-spec signature |
| 1213 | * @tf: ATA taskfile register set for device to be identified |
| 1214 | * |
| 1215 | * Determine from taskfile register contents whether a device is |
| 1216 | * ATA or ATAPI, as per "Signature and persistence" section |
| 1217 | * of ATA/PI spec (volume 1, sect 5.14). |
| 1218 | * |
| 1219 | * LOCKING: |
| 1220 | * None. |
| 1221 | * |
| 1222 | * RETURNS: |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 1223 | * Device type, %ATA_DEV_ATA, %ATA_DEV_ATAPI, %ATA_DEV_PMP or |
| 1224 | * %ATA_DEV_UNKNOWN the event of failure. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1225 | */ |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 1226 | unsigned int ata_dev_classify(const struct ata_taskfile *tf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1227 | { |
| 1228 | /* Apple's open source Darwin code hints that some devices only |
| 1229 | * put a proper signature into the LBA mid/high registers, |
| 1230 | * So, we only check those. It's sufficient for uniqueness. |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 1231 | * |
| 1232 | * ATA/ATAPI-7 (d1532v1r1: Feb. 19, 2003) specified separate |
| 1233 | * signatures for ATA and ATAPI devices attached on SerialATA, |
| 1234 | * 0x3c/0xc3 and 0x69/0x96 respectively. However, SerialATA |
| 1235 | * spec has never mentioned about using different signatures |
| 1236 | * for ATA/ATAPI devices. Then, Serial ATA II: Port |
| 1237 | * Multiplier specification began to use 0x69/0x96 to identify |
| 1238 | * port multpliers and 0x3c/0xc3 to identify SEMB device. |
| 1239 | * ATA/ATAPI-7 dropped descriptions about 0x3c/0xc3 and |
| 1240 | * 0x69/0x96 shortly and described them as reserved for |
| 1241 | * SerialATA. |
| 1242 | * |
| 1243 | * We follow the current spec and consider that 0x69/0x96 |
| 1244 | * identifies a port multiplier and 0x3c/0xc3 a SEMB device. |
Tejun Heo | 79b42ba | 2009-04-15 06:21:10 +0900 | [diff] [blame] | 1245 | * Unfortunately, WDC WD1600JS-62MHB5 (a hard drive) reports |
| 1246 | * SEMB signature. This is worked around in |
| 1247 | * ata_dev_read_id(). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1248 | */ |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 1249 | if ((tf->lbam == 0) && (tf->lbah == 0)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1250 | DPRINTK("found ATA device by sig\n"); |
| 1251 | return ATA_DEV_ATA; |
| 1252 | } |
| 1253 | |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 1254 | if ((tf->lbam == 0x14) && (tf->lbah == 0xeb)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1255 | DPRINTK("found ATAPI device by sig\n"); |
| 1256 | return ATA_DEV_ATAPI; |
| 1257 | } |
| 1258 | |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 1259 | if ((tf->lbam == 0x69) && (tf->lbah == 0x96)) { |
| 1260 | DPRINTK("found PMP device by sig\n"); |
| 1261 | return ATA_DEV_PMP; |
| 1262 | } |
| 1263 | |
| 1264 | if ((tf->lbam == 0x3c) && (tf->lbah == 0xc3)) { |
Tejun Heo | 79b42ba | 2009-04-15 06:21:10 +0900 | [diff] [blame] | 1265 | DPRINTK("found SEMB device by sig (could be ATA device)\n"); |
| 1266 | return ATA_DEV_SEMB; |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 1267 | } |
| 1268 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1269 | DPRINTK("unknown device\n"); |
| 1270 | return ATA_DEV_UNKNOWN; |
| 1271 | } |
| 1272 | |
| 1273 | /** |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 1274 | * ata_id_string - Convert IDENTIFY DEVICE page into string |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1275 | * @id: IDENTIFY DEVICE results we will examine |
| 1276 | * @s: string into which data is output |
| 1277 | * @ofs: offset into identify device page |
| 1278 | * @len: length of string to return. must be an even number. |
| 1279 | * |
| 1280 | * The strings in the IDENTIFY DEVICE page are broken up into |
| 1281 | * 16-bit chunks. Run through the string, and output each |
| 1282 | * 8-bit chunk linearly, regardless of platform. |
| 1283 | * |
| 1284 | * LOCKING: |
| 1285 | * caller. |
| 1286 | */ |
| 1287 | |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 1288 | void ata_id_string(const u16 *id, unsigned char *s, |
| 1289 | unsigned int ofs, unsigned int len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1290 | { |
| 1291 | unsigned int c; |
| 1292 | |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 1293 | BUG_ON(len & 1); |
| 1294 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1295 | while (len > 0) { |
| 1296 | c = id[ofs] >> 8; |
| 1297 | *s = c; |
| 1298 | s++; |
| 1299 | |
| 1300 | c = id[ofs] & 0xff; |
| 1301 | *s = c; |
| 1302 | s++; |
| 1303 | |
| 1304 | ofs++; |
| 1305 | len -= 2; |
| 1306 | } |
| 1307 | } |
| 1308 | |
Tejun Heo | 0e949ff | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 1309 | /** |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 1310 | * ata_id_c_string - Convert IDENTIFY DEVICE page into C string |
Tejun Heo | 0e949ff | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 1311 | * @id: IDENTIFY DEVICE results we will examine |
| 1312 | * @s: string into which data is output |
| 1313 | * @ofs: offset into identify device page |
| 1314 | * @len: length of string to return. must be an odd number. |
| 1315 | * |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 1316 | * This function is identical to ata_id_string except that it |
Tejun Heo | 0e949ff | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 1317 | * trims trailing spaces and terminates the resulting string with |
| 1318 | * null. @len must be actual maximum length (even number) + 1. |
| 1319 | * |
| 1320 | * LOCKING: |
| 1321 | * caller. |
| 1322 | */ |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 1323 | void ata_id_c_string(const u16 *id, unsigned char *s, |
| 1324 | unsigned int ofs, unsigned int len) |
Tejun Heo | 0e949ff | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 1325 | { |
| 1326 | unsigned char *p; |
| 1327 | |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 1328 | ata_id_string(id, s, ofs, len - 1); |
Tejun Heo | 0e949ff | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 1329 | |
| 1330 | p = s + strnlen(s, len - 1); |
| 1331 | while (p > s && p[-1] == ' ') |
| 1332 | p--; |
| 1333 | *p = '\0'; |
| 1334 | } |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 1335 | |
Tejun Heo | db6f875 | 2007-09-03 12:31:58 +0900 | [diff] [blame] | 1336 | static u64 ata_id_n_sectors(const u16 *id) |
| 1337 | { |
| 1338 | if (ata_id_has_lba(id)) { |
| 1339 | if (ata_id_has_lba48(id)) |
Robert Hancock | 968e594 | 2009-02-16 20:15:08 -0600 | [diff] [blame] | 1340 | return ata_id_u64(id, ATA_ID_LBA_CAPACITY_2); |
Tejun Heo | db6f875 | 2007-09-03 12:31:58 +0900 | [diff] [blame] | 1341 | else |
Robert Hancock | 968e594 | 2009-02-16 20:15:08 -0600 | [diff] [blame] | 1342 | return ata_id_u32(id, ATA_ID_LBA_CAPACITY); |
Tejun Heo | db6f875 | 2007-09-03 12:31:58 +0900 | [diff] [blame] | 1343 | } else { |
| 1344 | if (ata_id_current_chs_valid(id)) |
Robert Hancock | 968e594 | 2009-02-16 20:15:08 -0600 | [diff] [blame] | 1345 | return id[ATA_ID_CUR_CYLS] * id[ATA_ID_CUR_HEADS] * |
| 1346 | id[ATA_ID_CUR_SECTORS]; |
Tejun Heo | db6f875 | 2007-09-03 12:31:58 +0900 | [diff] [blame] | 1347 | else |
Robert Hancock | 968e594 | 2009-02-16 20:15:08 -0600 | [diff] [blame] | 1348 | return id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * |
| 1349 | id[ATA_ID_SECTORS]; |
Tejun Heo | db6f875 | 2007-09-03 12:31:58 +0900 | [diff] [blame] | 1350 | } |
| 1351 | } |
| 1352 | |
Tejun Heo | a5987e0 | 2008-03-27 19:14:23 +0900 | [diff] [blame] | 1353 | u64 ata_tf_to_lba48(const struct ata_taskfile *tf) |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1354 | { |
| 1355 | u64 sectors = 0; |
| 1356 | |
| 1357 | sectors |= ((u64)(tf->hob_lbah & 0xff)) << 40; |
| 1358 | sectors |= ((u64)(tf->hob_lbam & 0xff)) << 32; |
Roland Dreier | ba14a9c | 2008-10-28 16:52:20 -0700 | [diff] [blame] | 1359 | sectors |= ((u64)(tf->hob_lbal & 0xff)) << 24; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1360 | sectors |= (tf->lbah & 0xff) << 16; |
| 1361 | sectors |= (tf->lbam & 0xff) << 8; |
| 1362 | sectors |= (tf->lbal & 0xff); |
| 1363 | |
Tejun Heo | a5987e0 | 2008-03-27 19:14:23 +0900 | [diff] [blame] | 1364 | return sectors; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1365 | } |
| 1366 | |
Tejun Heo | a5987e0 | 2008-03-27 19:14:23 +0900 | [diff] [blame] | 1367 | u64 ata_tf_to_lba(const struct ata_taskfile *tf) |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1368 | { |
| 1369 | u64 sectors = 0; |
| 1370 | |
| 1371 | sectors |= (tf->device & 0x0f) << 24; |
| 1372 | sectors |= (tf->lbah & 0xff) << 16; |
| 1373 | sectors |= (tf->lbam & 0xff) << 8; |
| 1374 | sectors |= (tf->lbal & 0xff); |
| 1375 | |
Tejun Heo | a5987e0 | 2008-03-27 19:14:23 +0900 | [diff] [blame] | 1376 | return sectors; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1377 | } |
| 1378 | |
| 1379 | /** |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1380 | * ata_read_native_max_address - Read native max address |
| 1381 | * @dev: target device |
| 1382 | * @max_sectors: out parameter for the result native max address |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1383 | * |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1384 | * Perform an LBA48 or LBA28 native size query upon the device in |
| 1385 | * question. |
| 1386 | * |
| 1387 | * RETURNS: |
| 1388 | * 0 on success, -EACCES if command is aborted by the drive. |
| 1389 | * -EIO on other errors. |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1390 | */ |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1391 | 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] | 1392 | { |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1393 | unsigned int err_mask; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1394 | struct ata_taskfile tf; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1395 | int lba48 = ata_id_has_lba48(dev->id); |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1396 | |
| 1397 | ata_tf_init(dev, &tf); |
| 1398 | |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1399 | /* always clear all address registers */ |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1400 | tf.flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1401 | |
| 1402 | if (lba48) { |
| 1403 | tf.command = ATA_CMD_READ_NATIVE_MAX_EXT; |
| 1404 | tf.flags |= ATA_TFLAG_LBA48; |
| 1405 | } else |
| 1406 | tf.command = ATA_CMD_READ_NATIVE_MAX; |
| 1407 | |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1408 | tf.protocol |= ATA_PROT_NODATA; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1409 | tf.device |= ATA_LBA; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1410 | |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1411 | 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] | 1412 | if (err_mask) { |
| 1413 | ata_dev_printk(dev, KERN_WARNING, "failed to read native " |
| 1414 | "max address (err_mask=0x%x)\n", err_mask); |
| 1415 | if (err_mask == AC_ERR_DEV && (tf.feature & ATA_ABORTED)) |
| 1416 | return -EACCES; |
| 1417 | return -EIO; |
| 1418 | } |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1419 | |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1420 | if (lba48) |
Tejun Heo | a5987e0 | 2008-03-27 19:14:23 +0900 | [diff] [blame] | 1421 | *max_sectors = ata_tf_to_lba48(&tf) + 1; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1422 | else |
Tejun Heo | a5987e0 | 2008-03-27 19:14:23 +0900 | [diff] [blame] | 1423 | *max_sectors = ata_tf_to_lba(&tf) + 1; |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1424 | if (dev->horkage & ATA_HORKAGE_HPA_SIZE) |
Alan Cox | 93328e1 | 2007-09-29 04:06:48 -0400 | [diff] [blame] | 1425 | (*max_sectors)--; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1426 | return 0; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1427 | } |
| 1428 | |
| 1429 | /** |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1430 | * ata_set_max_sectors - Set max sectors |
| 1431 | * @dev: target device |
Randy Dunlap | 6b38d1d | 2007-05-01 17:35:55 -0700 | [diff] [blame] | 1432 | * @new_sectors: new max sectors value to set for the device |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1433 | * |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1434 | * Set max sectors of @dev to @new_sectors. |
| 1435 | * |
| 1436 | * RETURNS: |
| 1437 | * 0 on success, -EACCES if command is aborted or denied (due to |
| 1438 | * previous non-volatile SET_MAX) by the drive. -EIO on other |
| 1439 | * errors. |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1440 | */ |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1441 | 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] | 1442 | { |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1443 | unsigned int err_mask; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1444 | struct ata_taskfile tf; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1445 | int lba48 = ata_id_has_lba48(dev->id); |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1446 | |
| 1447 | new_sectors--; |
| 1448 | |
| 1449 | ata_tf_init(dev, &tf); |
| 1450 | |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1451 | tf.flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1452 | |
| 1453 | if (lba48) { |
| 1454 | tf.command = ATA_CMD_SET_MAX_EXT; |
| 1455 | tf.flags |= ATA_TFLAG_LBA48; |
| 1456 | |
| 1457 | tf.hob_lbal = (new_sectors >> 24) & 0xff; |
| 1458 | tf.hob_lbam = (new_sectors >> 32) & 0xff; |
| 1459 | tf.hob_lbah = (new_sectors >> 40) & 0xff; |
Tejun Heo | 1e582ba | 2007-09-21 20:07:14 +0900 | [diff] [blame] | 1460 | } else { |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1461 | tf.command = ATA_CMD_SET_MAX; |
| 1462 | |
Tejun Heo | 1e582ba | 2007-09-21 20:07:14 +0900 | [diff] [blame] | 1463 | tf.device |= (new_sectors >> 24) & 0xf; |
| 1464 | } |
| 1465 | |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1466 | tf.protocol |= ATA_PROT_NODATA; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1467 | tf.device |= ATA_LBA; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1468 | |
| 1469 | tf.lbal = (new_sectors >> 0) & 0xff; |
| 1470 | tf.lbam = (new_sectors >> 8) & 0xff; |
| 1471 | tf.lbah = (new_sectors >> 16) & 0xff; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1472 | |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1473 | 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] | 1474 | if (err_mask) { |
| 1475 | ata_dev_printk(dev, KERN_WARNING, "failed to set " |
| 1476 | "max address (err_mask=0x%x)\n", err_mask); |
| 1477 | if (err_mask == AC_ERR_DEV && |
| 1478 | (tf.feature & (ATA_ABORTED | ATA_IDNF))) |
| 1479 | return -EACCES; |
| 1480 | return -EIO; |
| 1481 | } |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1482 | |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1483 | return 0; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1484 | } |
| 1485 | |
| 1486 | /** |
| 1487 | * ata_hpa_resize - Resize a device with an HPA set |
| 1488 | * @dev: Device to resize |
| 1489 | * |
| 1490 | * Read the size of an LBA28 or LBA48 disk with HPA features and resize |
| 1491 | * it if required to the full size of the media. The caller must check |
| 1492 | * the drive has the HPA feature set enabled. |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1493 | * |
| 1494 | * RETURNS: |
| 1495 | * 0 on success, -errno on failure. |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1496 | */ |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1497 | static int ata_hpa_resize(struct ata_device *dev) |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1498 | { |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1499 | struct ata_eh_context *ehc = &dev->link->eh_context; |
| 1500 | int print_info = ehc->i.flags & ATA_EHI_PRINTINFO; |
Tejun Heo | 445d211 | 2010-04-05 10:33:13 +0900 | [diff] [blame] | 1501 | bool unlock_hpa = ata_ignore_hpa || dev->flags & ATA_DFLAG_UNLOCK_HPA; |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1502 | u64 sectors = ata_id_n_sectors(dev->id); |
| 1503 | u64 native_sectors; |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1504 | int rc; |
Jeff Garzik | a617c09 | 2007-05-21 20:14:23 -0400 | [diff] [blame] | 1505 | |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1506 | /* do we need to do it? */ |
| 1507 | if (dev->class != ATA_DEV_ATA || |
| 1508 | !ata_id_has_lba(dev->id) || !ata_id_hpa_enabled(dev->id) || |
| 1509 | (dev->horkage & ATA_HORKAGE_BROKEN_HPA)) |
Tejun Heo | c728a91 | 2007-09-03 12:32:30 +0900 | [diff] [blame] | 1510 | return 0; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1511 | |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1512 | /* read native max address */ |
| 1513 | rc = ata_read_native_max_address(dev, &native_sectors); |
| 1514 | if (rc) { |
Tejun Heo | dda7aba | 2008-03-23 21:05:15 +0900 | [diff] [blame] | 1515 | /* If device aborted the command or HPA isn't going to |
| 1516 | * be unlocked, skip HPA resizing. |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1517 | */ |
Tejun Heo | 445d211 | 2010-04-05 10:33:13 +0900 | [diff] [blame] | 1518 | if (rc == -EACCES || !unlock_hpa) { |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1519 | ata_dev_printk(dev, KERN_WARNING, "HPA support seems " |
Tejun Heo | dda7aba | 2008-03-23 21:05:15 +0900 | [diff] [blame] | 1520 | "broken, skipping HPA handling\n"); |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1521 | dev->horkage |= ATA_HORKAGE_BROKEN_HPA; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1522 | |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1523 | /* we can continue if device aborted the command */ |
| 1524 | if (rc == -EACCES) |
| 1525 | rc = 0; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1526 | } |
Tejun Heo | 37301a5 | 2007-06-25 20:45:54 +0900 | [diff] [blame] | 1527 | |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1528 | return rc; |
| 1529 | } |
Tejun Heo | 5920dad | 2009-07-15 17:11:41 +0900 | [diff] [blame] | 1530 | dev->n_native_sectors = native_sectors; |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1531 | |
| 1532 | /* nothing to do? */ |
Tejun Heo | 445d211 | 2010-04-05 10:33:13 +0900 | [diff] [blame] | 1533 | if (native_sectors <= sectors || !unlock_hpa) { |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 1534 | if (!print_info || native_sectors == sectors) |
| 1535 | return 0; |
| 1536 | |
| 1537 | if (native_sectors > sectors) |
| 1538 | ata_dev_printk(dev, KERN_INFO, |
| 1539 | "HPA detected: current %llu, native %llu\n", |
| 1540 | (unsigned long long)sectors, |
| 1541 | (unsigned long long)native_sectors); |
| 1542 | else if (native_sectors < sectors) |
| 1543 | ata_dev_printk(dev, KERN_WARNING, |
| 1544 | "native sectors (%llu) is smaller than " |
| 1545 | "sectors (%llu)\n", |
| 1546 | (unsigned long long)native_sectors, |
| 1547 | (unsigned long long)sectors); |
| 1548 | return 0; |
| 1549 | } |
| 1550 | |
| 1551 | /* let's unlock HPA */ |
| 1552 | rc = ata_set_max_sectors(dev, native_sectors); |
| 1553 | if (rc == -EACCES) { |
| 1554 | /* if device aborted the command, skip HPA resizing */ |
| 1555 | ata_dev_printk(dev, KERN_WARNING, "device aborted resize " |
| 1556 | "(%llu -> %llu), skipping HPA handling\n", |
| 1557 | (unsigned long long)sectors, |
| 1558 | (unsigned long long)native_sectors); |
| 1559 | dev->horkage |= ATA_HORKAGE_BROKEN_HPA; |
| 1560 | return 0; |
| 1561 | } else if (rc) |
| 1562 | return rc; |
| 1563 | |
| 1564 | /* re-read IDENTIFY data */ |
| 1565 | rc = ata_dev_reread_id(dev, 0); |
| 1566 | if (rc) { |
| 1567 | ata_dev_printk(dev, KERN_ERR, "failed to re-read IDENTIFY " |
| 1568 | "data after HPA resizing\n"); |
| 1569 | return rc; |
| 1570 | } |
| 1571 | |
| 1572 | if (print_info) { |
| 1573 | u64 new_sectors = ata_id_n_sectors(dev->id); |
| 1574 | ata_dev_printk(dev, KERN_INFO, |
| 1575 | "HPA unlocked: %llu -> %llu, native %llu\n", |
| 1576 | (unsigned long long)sectors, |
| 1577 | (unsigned long long)new_sectors, |
| 1578 | (unsigned long long)native_sectors); |
| 1579 | } |
| 1580 | |
| 1581 | return 0; |
Alan Cox | 1e99973 | 2007-04-11 00:23:13 +0100 | [diff] [blame] | 1582 | } |
| 1583 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 1584 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1585 | * ata_dump_id - IDENTIFY DEVICE info debugging output |
Tejun Heo | 0bd3300 | 2006-02-12 22:47:05 +0900 | [diff] [blame] | 1586 | * @id: IDENTIFY DEVICE page to dump |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1587 | * |
Tejun Heo | 0bd3300 | 2006-02-12 22:47:05 +0900 | [diff] [blame] | 1588 | * Dump selected 16-bit words from the given IDENTIFY DEVICE |
| 1589 | * page. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1590 | * |
| 1591 | * LOCKING: |
| 1592 | * caller. |
| 1593 | */ |
| 1594 | |
Tejun Heo | 0bd3300 | 2006-02-12 22:47:05 +0900 | [diff] [blame] | 1595 | static inline void ata_dump_id(const u16 *id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1596 | { |
| 1597 | DPRINTK("49==0x%04x " |
| 1598 | "53==0x%04x " |
| 1599 | "63==0x%04x " |
| 1600 | "64==0x%04x " |
| 1601 | "75==0x%04x \n", |
Tejun Heo | 0bd3300 | 2006-02-12 22:47:05 +0900 | [diff] [blame] | 1602 | id[49], |
| 1603 | id[53], |
| 1604 | id[63], |
| 1605 | id[64], |
| 1606 | id[75]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1607 | DPRINTK("80==0x%04x " |
| 1608 | "81==0x%04x " |
| 1609 | "82==0x%04x " |
| 1610 | "83==0x%04x " |
| 1611 | "84==0x%04x \n", |
Tejun Heo | 0bd3300 | 2006-02-12 22:47:05 +0900 | [diff] [blame] | 1612 | id[80], |
| 1613 | id[81], |
| 1614 | id[82], |
| 1615 | id[83], |
| 1616 | id[84]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1617 | DPRINTK("88==0x%04x " |
| 1618 | "93==0x%04x\n", |
Tejun Heo | 0bd3300 | 2006-02-12 22:47:05 +0900 | [diff] [blame] | 1619 | id[88], |
| 1620 | id[93]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1621 | } |
| 1622 | |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 1623 | /** |
| 1624 | * ata_id_xfermask - Compute xfermask from the given IDENTIFY data |
| 1625 | * @id: IDENTIFY data to compute xfer mask from |
| 1626 | * |
| 1627 | * Compute the xfermask for this device. This is not as trivial |
| 1628 | * as it seems if we must consider early devices correctly. |
| 1629 | * |
| 1630 | * FIXME: pre IDE drive timing (do we care ?). |
| 1631 | * |
| 1632 | * LOCKING: |
| 1633 | * None. |
| 1634 | * |
| 1635 | * RETURNS: |
| 1636 | * Computed xfermask |
| 1637 | */ |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 1638 | unsigned long ata_id_xfermask(const u16 *id) |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 1639 | { |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 1640 | unsigned long pio_mask, mwdma_mask, udma_mask; |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 1641 | |
| 1642 | /* Usual case. Word 53 indicates word 64 is valid */ |
| 1643 | if (id[ATA_ID_FIELD_VALID] & (1 << 1)) { |
| 1644 | pio_mask = id[ATA_ID_PIO_MODES] & 0x03; |
| 1645 | pio_mask <<= 3; |
| 1646 | pio_mask |= 0x7; |
| 1647 | } else { |
| 1648 | /* If word 64 isn't valid then Word 51 high byte holds |
| 1649 | * the PIO timing number for the maximum. Turn it into |
| 1650 | * a mask. |
| 1651 | */ |
Lennert Buytenhek | 7a0f1c8 | 2007-01-29 13:28:47 +0100 | [diff] [blame] | 1652 | u8 mode = (id[ATA_ID_OLD_PIO_MODES] >> 8) & 0xFF; |
Alan Cox | 46767aeb | 2006-09-29 18:26:47 +0100 | [diff] [blame] | 1653 | if (mode < 5) /* Valid PIO range */ |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1654 | pio_mask = (2 << mode) - 1; |
Alan Cox | 46767aeb | 2006-09-29 18:26:47 +0100 | [diff] [blame] | 1655 | else |
| 1656 | pio_mask = 1; |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 1657 | |
| 1658 | /* But wait.. there's more. Design your standards by |
| 1659 | * committee and you too can get a free iordy field to |
| 1660 | * process. However its the speeds not the modes that |
| 1661 | * are supported... Note drivers using the timing API |
| 1662 | * will get this right anyway |
| 1663 | */ |
| 1664 | } |
| 1665 | |
| 1666 | mwdma_mask = id[ATA_ID_MWDMA_MODES] & 0x07; |
Tejun Heo | fb21f0d | 2006-03-12 12:34:35 +0900 | [diff] [blame] | 1667 | |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 1668 | if (ata_id_is_cfa(id)) { |
| 1669 | /* |
| 1670 | * Process compact flash extended modes |
| 1671 | */ |
Sergei Shtylyov | 62afe5d | 2009-04-13 20:50:00 +0400 | [diff] [blame] | 1672 | int pio = (id[ATA_ID_CFA_MODES] >> 0) & 0x7; |
| 1673 | int dma = (id[ATA_ID_CFA_MODES] >> 3) & 0x7; |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 1674 | |
| 1675 | if (pio) |
| 1676 | pio_mask |= (1 << 5); |
| 1677 | if (pio > 1) |
| 1678 | pio_mask |= (1 << 6); |
| 1679 | if (dma) |
| 1680 | mwdma_mask |= (1 << 3); |
| 1681 | if (dma > 1) |
| 1682 | mwdma_mask |= (1 << 4); |
| 1683 | } |
| 1684 | |
Tejun Heo | fb21f0d | 2006-03-12 12:34:35 +0900 | [diff] [blame] | 1685 | udma_mask = 0; |
| 1686 | if (id[ATA_ID_FIELD_VALID] & (1 << 2)) |
| 1687 | udma_mask = id[ATA_ID_UDMA_MODES] & 0xff; |
Tejun Heo | cb95d56 | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 1688 | |
| 1689 | return ata_pack_xfermask(pio_mask, mwdma_mask, udma_mask); |
| 1690 | } |
| 1691 | |
Adrian Bunk | 7102d23 | 2007-01-04 00:09:36 +0100 | [diff] [blame] | 1692 | static void ata_qc_complete_internal(struct ata_queued_cmd *qc) |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1693 | { |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1694 | struct completion *waiting = qc->private_data; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1695 | |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1696 | complete(waiting); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1697 | } |
| 1698 | |
| 1699 | /** |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1700 | * ata_exec_internal_sg - execute libata internal command |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1701 | * @dev: Device to which the command is sent |
| 1702 | * @tf: Taskfile registers for the command and the result |
Tejun Heo | d69cf37 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 1703 | * @cdb: CDB for packet command |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1704 | * @dma_dir: Data tranfer direction of the command |
Randy Dunlap | 5c1ad8b | 2007-10-18 14:12:26 -0700 | [diff] [blame] | 1705 | * @sgl: sg list for the data buffer of the command |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1706 | * @n_elem: Number of sg entries |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1707 | * @timeout: Timeout in msecs (0 for default) |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1708 | * |
| 1709 | * Executes libata internal command with timeout. @tf contains |
| 1710 | * command on entry and result on return. Timeout and error |
| 1711 | * conditions are reported via return value. No recovery action |
| 1712 | * is taken after a command times out. It's caller's duty to |
| 1713 | * clean up after timeout. |
| 1714 | * |
| 1715 | * LOCKING: |
| 1716 | * None. Should be called with kernel context, might sleep. |
Tejun Heo | 551e888 | 2006-06-12 14:09:49 +0900 | [diff] [blame] | 1717 | * |
| 1718 | * RETURNS: |
| 1719 | * Zero on success, AC_ERR_* mask on failure |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1720 | */ |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1721 | unsigned ata_exec_internal_sg(struct ata_device *dev, |
| 1722 | struct ata_taskfile *tf, const u8 *cdb, |
Jens Axboe | 8726021 | 2007-10-16 11:14:12 +0200 | [diff] [blame] | 1723 | int dma_dir, struct scatterlist *sgl, |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1724 | unsigned int n_elem, unsigned long timeout) |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1725 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 1726 | struct ata_link *link = dev->link; |
| 1727 | struct ata_port *ap = link->ap; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1728 | u8 command = tf->command; |
Tejun Heo | 87fbc5a | 2008-05-20 02:17:54 +0900 | [diff] [blame] | 1729 | int auto_timeout = 0; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1730 | struct ata_queued_cmd *qc; |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 1731 | unsigned int tag, preempted_tag; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 1732 | u32 preempted_sactive, preempted_qc_active; |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1733 | int preempted_nr_active_links; |
Ingo Molnar | 60be6b9 | 2006-07-03 00:25:26 -0700 | [diff] [blame] | 1734 | DECLARE_COMPLETION_ONSTACK(wait); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1735 | unsigned long flags; |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1736 | unsigned int err_mask; |
Tejun Heo | d95a717 | 2006-05-15 20:58:14 +0900 | [diff] [blame] | 1737 | int rc; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1738 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1739 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1740 | |
Tejun Heo | e318049 | 2006-05-15 20:58:09 +0900 | [diff] [blame] | 1741 | /* no internal command while frozen */ |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 1742 | if (ap->pflags & ATA_PFLAG_FROZEN) { |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1743 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | e318049 | 2006-05-15 20:58:09 +0900 | [diff] [blame] | 1744 | return AC_ERR_SYSTEM; |
| 1745 | } |
| 1746 | |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 1747 | /* initialize internal qc */ |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1748 | |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 1749 | /* XXX: Tag 0 is used for drivers with legacy EH as some |
| 1750 | * drivers choke if any other tag is given. This breaks |
| 1751 | * ata_tag_internal() test for those drivers. Don't use new |
| 1752 | * EH stuff without converting to it. |
| 1753 | */ |
| 1754 | if (ap->ops->error_handler) |
| 1755 | tag = ATA_TAG_INTERNAL; |
| 1756 | else |
| 1757 | tag = 0; |
| 1758 | |
Tejun Heo | 8a8bc22 | 2008-11-10 14:48:21 +0900 | [diff] [blame] | 1759 | if (test_and_set_bit(tag, &ap->qc_allocated)) |
| 1760 | BUG(); |
Tejun Heo | f69499f | 2006-05-15 20:58:03 +0900 | [diff] [blame] | 1761 | qc = __ata_qc_from_tag(ap, tag); |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 1762 | |
| 1763 | qc->tag = tag; |
| 1764 | qc->scsicmd = NULL; |
| 1765 | qc->ap = ap; |
| 1766 | qc->dev = dev; |
| 1767 | ata_qc_reinit(qc); |
| 1768 | |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 1769 | preempted_tag = link->active_tag; |
| 1770 | preempted_sactive = link->sactive; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 1771 | preempted_qc_active = ap->qc_active; |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1772 | preempted_nr_active_links = ap->nr_active_links; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 1773 | link->active_tag = ATA_TAG_POISON; |
| 1774 | link->sactive = 0; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 1775 | ap->qc_active = 0; |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1776 | ap->nr_active_links = 0; |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 1777 | |
| 1778 | /* prepare & issue qc */ |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1779 | qc->tf = *tf; |
Tejun Heo | d69cf37 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 1780 | if (cdb) |
| 1781 | memcpy(qc->cdb, cdb, ATAPI_CDB_LEN); |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 1782 | qc->flags |= ATA_QCFLAG_RESULT_TF; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1783 | qc->dma_dir = dma_dir; |
| 1784 | if (dma_dir != DMA_NONE) { |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1785 | unsigned int i, buflen = 0; |
Jens Axboe | 8726021 | 2007-10-16 11:14:12 +0200 | [diff] [blame] | 1786 | struct scatterlist *sg; |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1787 | |
Jens Axboe | 8726021 | 2007-10-16 11:14:12 +0200 | [diff] [blame] | 1788 | for_each_sg(sgl, sg, n_elem, i) |
| 1789 | buflen += sg->length; |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1790 | |
Jens Axboe | 8726021 | 2007-10-16 11:14:12 +0200 | [diff] [blame] | 1791 | ata_sg_init(qc, sgl, n_elem); |
Brian King | 49c8042 | 2007-01-30 11:32:26 -0600 | [diff] [blame] | 1792 | qc->nbytes = buflen; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1793 | } |
| 1794 | |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1795 | qc->private_data = &wait; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1796 | qc->complete_fn = ata_qc_complete_internal; |
| 1797 | |
Tejun Heo | 8e0e694 | 2006-03-31 20:41:11 +0900 | [diff] [blame] | 1798 | ata_qc_issue(qc); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1799 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1800 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1801 | |
Tejun Heo | 87fbc5a | 2008-05-20 02:17:54 +0900 | [diff] [blame] | 1802 | if (!timeout) { |
| 1803 | if (ata_probe_timeout) |
| 1804 | timeout = ata_probe_timeout * 1000; |
| 1805 | else { |
| 1806 | timeout = ata_internal_cmd_timeout(dev, command); |
| 1807 | auto_timeout = 1; |
| 1808 | } |
| 1809 | } |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1810 | |
| 1811 | rc = wait_for_completion_timeout(&wait, msecs_to_jiffies(timeout)); |
Albert Lee | 41ade50 | 2006-03-14 11:19:04 +0800 | [diff] [blame] | 1812 | |
Tejun Heo | c429137 | 2010-05-10 21:41:38 +0200 | [diff] [blame] | 1813 | ata_sff_flush_pio_task(ap); |
Tejun Heo | d95a717 | 2006-05-15 20:58:14 +0900 | [diff] [blame] | 1814 | |
| 1815 | if (!rc) { |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1816 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1817 | |
| 1818 | /* We're racing with irq here. If we lose, the |
| 1819 | * following test prevents us from completing the qc |
Tejun Heo | d95a717 | 2006-05-15 20:58:14 +0900 | [diff] [blame] | 1820 | * twice. If we win, the port is frozen and will be |
| 1821 | * cleaned up by ->post_internal_cmd(). |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1822 | */ |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1823 | if (qc->flags & ATA_QCFLAG_ACTIVE) { |
Tejun Heo | d95a717 | 2006-05-15 20:58:14 +0900 | [diff] [blame] | 1824 | qc->err_mask |= AC_ERR_TIMEOUT; |
| 1825 | |
| 1826 | if (ap->ops->error_handler) |
| 1827 | ata_port_freeze(ap); |
| 1828 | else |
| 1829 | ata_qc_complete(qc); |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 1830 | |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 1831 | if (ata_msg_warn(ap)) |
| 1832 | ata_dev_printk(dev, KERN_WARNING, |
Tejun Heo | 8857455 | 2006-06-25 20:00:35 +0900 | [diff] [blame] | 1833 | "qc timeout (cmd 0x%x)\n", command); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1834 | } |
| 1835 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1836 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1837 | } |
| 1838 | |
Tejun Heo | d95a717 | 2006-05-15 20:58:14 +0900 | [diff] [blame] | 1839 | /* do post_internal_cmd */ |
| 1840 | if (ap->ops->post_internal_cmd) |
| 1841 | ap->ops->post_internal_cmd(qc); |
| 1842 | |
Tejun Heo | a51d644 | 2007-03-20 15:24:11 +0900 | [diff] [blame] | 1843 | /* perform minimal error analysis */ |
| 1844 | if (qc->flags & ATA_QCFLAG_FAILED) { |
| 1845 | if (qc->result_tf.command & (ATA_ERR | ATA_DF)) |
| 1846 | qc->err_mask |= AC_ERR_DEV; |
| 1847 | |
| 1848 | if (!qc->err_mask) |
| 1849 | qc->err_mask |= AC_ERR_OTHER; |
| 1850 | |
| 1851 | if (qc->err_mask & ~AC_ERR_OTHER) |
| 1852 | qc->err_mask &= ~AC_ERR_OTHER; |
Tejun Heo | d95a717 | 2006-05-15 20:58:14 +0900 | [diff] [blame] | 1853 | } |
| 1854 | |
Tejun Heo | 1586930 | 2006-05-15 20:57:33 +0900 | [diff] [blame] | 1855 | /* finish up */ |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1856 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | 1586930 | 2006-05-15 20:57:33 +0900 | [diff] [blame] | 1857 | |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 1858 | *tf = qc->result_tf; |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1859 | err_mask = qc->err_mask; |
| 1860 | |
| 1861 | ata_qc_free(qc); |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 1862 | link->active_tag = preempted_tag; |
| 1863 | link->sactive = preempted_sactive; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 1864 | ap->qc_active = preempted_qc_active; |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1865 | ap->nr_active_links = preempted_nr_active_links; |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1866 | |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 1867 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | 1586930 | 2006-05-15 20:57:33 +0900 | [diff] [blame] | 1868 | |
Tejun Heo | 87fbc5a | 2008-05-20 02:17:54 +0900 | [diff] [blame] | 1869 | if ((err_mask & AC_ERR_TIMEOUT) && auto_timeout) |
| 1870 | ata_internal_cmd_timed_out(dev, command); |
| 1871 | |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1872 | return err_mask; |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 1873 | } |
| 1874 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1875 | /** |
Tejun Heo | 33480a0 | 2006-12-12 02:15:31 +0900 | [diff] [blame] | 1876 | * ata_exec_internal - execute libata internal command |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1877 | * @dev: Device to which the command is sent |
| 1878 | * @tf: Taskfile registers for the command and the result |
| 1879 | * @cdb: CDB for packet command |
| 1880 | * @dma_dir: Data tranfer direction of the command |
| 1881 | * @buf: Data buffer of the command |
| 1882 | * @buflen: Length of data buffer |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1883 | * @timeout: Timeout in msecs (0 for default) |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1884 | * |
| 1885 | * Wrapper around ata_exec_internal_sg() which takes simple |
| 1886 | * buffer instead of sg list. |
| 1887 | * |
| 1888 | * LOCKING: |
| 1889 | * None. Should be called with kernel context, might sleep. |
| 1890 | * |
| 1891 | * RETURNS: |
| 1892 | * Zero on success, AC_ERR_* mask on failure |
| 1893 | */ |
| 1894 | unsigned ata_exec_internal(struct ata_device *dev, |
| 1895 | struct ata_taskfile *tf, const u8 *cdb, |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1896 | int dma_dir, void *buf, unsigned int buflen, |
| 1897 | unsigned long timeout) |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1898 | { |
Tejun Heo | 33480a0 | 2006-12-12 02:15:31 +0900 | [diff] [blame] | 1899 | struct scatterlist *psg = NULL, sg; |
| 1900 | unsigned int n_elem = 0; |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1901 | |
Tejun Heo | 33480a0 | 2006-12-12 02:15:31 +0900 | [diff] [blame] | 1902 | if (dma_dir != DMA_NONE) { |
| 1903 | WARN_ON(!buf); |
| 1904 | sg_init_one(&sg, buf, buflen); |
| 1905 | psg = &sg; |
| 1906 | n_elem++; |
| 1907 | } |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1908 | |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1909 | return ata_exec_internal_sg(dev, tf, cdb, dma_dir, psg, n_elem, |
| 1910 | timeout); |
Tejun Heo | 2432697 | 2006-11-14 22:47:09 +0900 | [diff] [blame] | 1911 | } |
| 1912 | |
| 1913 | /** |
Tejun Heo | 977e6b9 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1914 | * ata_do_simple_cmd - execute simple internal command |
| 1915 | * @dev: Device to which the command is sent |
| 1916 | * @cmd: Opcode to execute |
| 1917 | * |
| 1918 | * Execute a 'simple' command, that only consists of the opcode |
| 1919 | * 'cmd' itself, without filling any other registers |
| 1920 | * |
| 1921 | * LOCKING: |
| 1922 | * Kernel thread context (may sleep). |
| 1923 | * |
| 1924 | * RETURNS: |
| 1925 | * Zero on success, AC_ERR_* mask on failure |
Tejun Heo | e58eb58 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1926 | */ |
Tejun Heo | 77b08fb | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1927 | unsigned int ata_do_simple_cmd(struct ata_device *dev, u8 cmd) |
Tejun Heo | e58eb58 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1928 | { |
| 1929 | struct ata_taskfile tf; |
Tejun Heo | e58eb58 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1930 | |
| 1931 | ata_tf_init(dev, &tf); |
| 1932 | |
| 1933 | tf.command = cmd; |
| 1934 | tf.flags |= ATA_TFLAG_DEVICE; |
| 1935 | tf.protocol = ATA_PROT_NODATA; |
| 1936 | |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 1937 | return ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0); |
Tejun Heo | e58eb58 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1938 | } |
| 1939 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1940 | /** |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1941 | * ata_pio_need_iordy - check if iordy needed |
| 1942 | * @adev: ATA device |
| 1943 | * |
| 1944 | * Check if the current speed of the device requires IORDY. Used |
| 1945 | * by various controllers for chip configuration. |
| 1946 | */ |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1947 | unsigned int ata_pio_need_iordy(const struct ata_device *adev) |
| 1948 | { |
Tejun Heo | 0d9e665 | 2009-06-11 11:04:45 +0900 | [diff] [blame] | 1949 | /* Don't set IORDY if we're preparing for reset. IORDY may |
| 1950 | * lead to controller lock up on certain controllers if the |
| 1951 | * port is not occupied. See bko#11703 for details. |
| 1952 | */ |
| 1953 | if (adev->link->ap->pflags & ATA_PFLAG_RESETTING) |
| 1954 | return 0; |
| 1955 | /* Controller doesn't support IORDY. Probably a pointless |
| 1956 | * check as the caller should know this. |
| 1957 | */ |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 1958 | if (adev->link->ap->flags & ATA_FLAG_NO_IORDY) |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1959 | return 0; |
David Daney | 5c18c4d | 2008-12-10 15:39:12 -0800 | [diff] [blame] | 1960 | /* CF spec. r4.1 Table 22 says no iordy on PIO5 and PIO6. */ |
| 1961 | if (ata_id_is_cfa(adev->id) |
| 1962 | && (adev->pio_mode == XFER_PIO_5 || adev->pio_mode == XFER_PIO_6)) |
| 1963 | return 0; |
Alan Cox | 432729f | 2007-03-08 23:22:59 +0000 | [diff] [blame] | 1964 | /* PIO3 and higher it is mandatory */ |
| 1965 | if (adev->pio_mode > XFER_PIO_2) |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1966 | return 1; |
Alan Cox | 432729f | 2007-03-08 23:22:59 +0000 | [diff] [blame] | 1967 | /* We turn it on when possible */ |
| 1968 | if (ata_id_has_iordy(adev->id)) |
| 1969 | return 1; |
| 1970 | return 0; |
| 1971 | } |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 1972 | |
Alan Cox | 432729f | 2007-03-08 23:22:59 +0000 | [diff] [blame] | 1973 | /** |
| 1974 | * ata_pio_mask_no_iordy - Return the non IORDY mask |
| 1975 | * @adev: ATA device |
| 1976 | * |
| 1977 | * Compute the highest mode possible if we are not using iordy. Return |
| 1978 | * -1 if no iordy mode is available. |
| 1979 | */ |
Alan Cox | 432729f | 2007-03-08 23:22:59 +0000 | [diff] [blame] | 1980 | static u32 ata_pio_mask_no_iordy(const struct ata_device *adev) |
| 1981 | { |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1982 | /* 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] | 1983 | if (adev->id[ATA_ID_FIELD_VALID] & 2) { /* EIDE */ |
Alan Cox | 432729f | 2007-03-08 23:22:59 +0000 | [diff] [blame] | 1984 | u16 pio = adev->id[ATA_ID_EIDE_PIO]; |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1985 | /* Is the speed faster than the drive allows non IORDY ? */ |
| 1986 | if (pio) { |
| 1987 | /* This is cycle times not frequency - watch the logic! */ |
| 1988 | if (pio > 240) /* PIO2 is 240nS per cycle */ |
Alan Cox | 432729f | 2007-03-08 23:22:59 +0000 | [diff] [blame] | 1989 | return 3 << ATA_SHIFT_PIO; |
| 1990 | return 7 << ATA_SHIFT_PIO; |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1991 | } |
| 1992 | } |
Alan Cox | 432729f | 2007-03-08 23:22:59 +0000 | [diff] [blame] | 1993 | return 3 << ATA_SHIFT_PIO; |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 1994 | } |
| 1995 | |
| 1996 | /** |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 1997 | * ata_do_dev_read_id - default ID read method |
| 1998 | * @dev: device |
| 1999 | * @tf: proposed taskfile |
| 2000 | * @id: data buffer |
| 2001 | * |
| 2002 | * Issue the identify taskfile and hand back the buffer containing |
| 2003 | * identify data. For some RAID controllers and for pre ATA devices |
| 2004 | * this function is wrapped or replaced by the driver |
| 2005 | */ |
| 2006 | unsigned int ata_do_dev_read_id(struct ata_device *dev, |
| 2007 | struct ata_taskfile *tf, u16 *id) |
| 2008 | { |
| 2009 | return ata_exec_internal(dev, tf, NULL, DMA_FROM_DEVICE, |
| 2010 | id, sizeof(id[0]) * ATA_ID_WORDS, 0); |
| 2011 | } |
| 2012 | |
| 2013 | /** |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2014 | * ata_dev_read_id - Read ID data from the specified device |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2015 | * @dev: target device |
| 2016 | * @p_class: pointer to class of the target device (may be changed) |
Tejun Heo | bff0464 | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 2017 | * @flags: ATA_READID_* flags |
Tejun Heo | fe635c7 | 2006-05-15 20:57:35 +0900 | [diff] [blame] | 2018 | * @id: buffer to read IDENTIFY data into |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2019 | * |
| 2020 | * Read ID data from the specified device. ATA_CMD_ID_ATA is |
| 2021 | * performed on ATA devices and ATA_CMD_ID_ATAPI on ATAPI |
Tejun Heo | aec5c3c | 2006-03-25 01:33:34 +0900 | [diff] [blame] | 2022 | * devices. This function also issues ATA_CMD_INIT_DEV_PARAMS |
| 2023 | * for pre-ATA4 drives. |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2024 | * |
Alan Cox | 50a9901 | 2007-08-08 14:27:00 +0100 | [diff] [blame] | 2025 | * FIXME: ATA_CMD_ID_ATA is optional for early drives and right |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 2026 | * now we abort if we hit that case. |
Alan Cox | 50a9901 | 2007-08-08 14:27:00 +0100 | [diff] [blame] | 2027 | * |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2028 | * LOCKING: |
| 2029 | * Kernel thread context (may sleep) |
| 2030 | * |
| 2031 | * RETURNS: |
| 2032 | * 0 on success, -errno otherwise. |
| 2033 | */ |
Tejun Heo | a9beec9 | 2006-05-31 18:27:44 +0900 | [diff] [blame] | 2034 | 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] | 2035 | unsigned int flags, u16 *id) |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2036 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2037 | struct ata_port *ap = dev->link->ap; |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2038 | unsigned int class = *p_class; |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2039 | struct ata_taskfile tf; |
| 2040 | unsigned int err_mask = 0; |
| 2041 | const char *reason; |
Tejun Heo | 79b42ba | 2009-04-15 06:21:10 +0900 | [diff] [blame] | 2042 | bool is_semb = class == ATA_DEV_SEMB; |
Tejun Heo | 54936f8 | 2007-05-11 14:35:29 +0200 | [diff] [blame] | 2043 | int may_fallback = 1, tried_spinup = 0; |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2044 | int rc; |
| 2045 | |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 2046 | if (ata_msg_ctl(ap)) |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 2047 | ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER\n", __func__); |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2048 | |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 2049 | retry: |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 2050 | ata_tf_init(dev, &tf); |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2051 | |
| 2052 | switch (class) { |
Tejun Heo | 79b42ba | 2009-04-15 06:21:10 +0900 | [diff] [blame] | 2053 | case ATA_DEV_SEMB: |
| 2054 | class = ATA_DEV_ATA; /* some hard drives report SEMB sig */ |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2055 | case ATA_DEV_ATA: |
| 2056 | tf.command = ATA_CMD_ID_ATA; |
| 2057 | break; |
| 2058 | case ATA_DEV_ATAPI: |
| 2059 | tf.command = ATA_CMD_ID_ATAPI; |
| 2060 | break; |
| 2061 | default: |
| 2062 | rc = -ENODEV; |
| 2063 | reason = "unsupported class"; |
| 2064 | goto err_out; |
| 2065 | } |
| 2066 | |
| 2067 | tf.protocol = ATA_PROT_PIO; |
Tejun Heo | 81afe89 | 2007-02-07 12:37:41 -0800 | [diff] [blame] | 2068 | |
| 2069 | /* Some devices choke if TF registers contain garbage. Make |
| 2070 | * sure those are properly initialized. |
| 2071 | */ |
| 2072 | tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 2073 | |
| 2074 | /* Device presence detection is unreliable on some |
| 2075 | * controllers. Always poll IDENTIFY if available. |
| 2076 | */ |
| 2077 | tf.flags |= ATA_TFLAG_POLLING; |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2078 | |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 2079 | if (ap->ops->read_id) |
| 2080 | err_mask = ap->ops->read_id(dev, &tf, id); |
| 2081 | else |
| 2082 | err_mask = ata_do_dev_read_id(dev, &tf, id); |
| 2083 | |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2084 | if (err_mask) { |
Tejun Heo | 800b399 | 2006-12-03 21:34:13 +0900 | [diff] [blame] | 2085 | if (err_mask & AC_ERR_NODEV_HINT) { |
Tejun Heo | 1ffc151 | 2008-03-23 15:16:53 +0900 | [diff] [blame] | 2086 | ata_dev_printk(dev, KERN_DEBUG, |
| 2087 | "NODEV after polling detection\n"); |
Tejun Heo | 55a8e2c | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 2088 | return -ENOENT; |
| 2089 | } |
| 2090 | |
Tejun Heo | 79b42ba | 2009-04-15 06:21:10 +0900 | [diff] [blame] | 2091 | if (is_semb) { |
| 2092 | ata_dev_printk(dev, KERN_INFO, "IDENTIFY failed on " |
| 2093 | "device w/ SEMB sig, disabled\n"); |
| 2094 | /* SEMB is not supported yet */ |
| 2095 | *p_class = ATA_DEV_SEMB_UNSUP; |
| 2096 | return 0; |
| 2097 | } |
| 2098 | |
Tejun Heo | 1ffc151 | 2008-03-23 15:16:53 +0900 | [diff] [blame] | 2099 | if ((err_mask == AC_ERR_DEV) && (tf.feature & ATA_ABORTED)) { |
| 2100 | /* Device or controller might have reported |
| 2101 | * the wrong device class. Give a shot at the |
| 2102 | * other IDENTIFY if the current one is |
| 2103 | * aborted by the device. |
| 2104 | */ |
| 2105 | if (may_fallback) { |
| 2106 | may_fallback = 0; |
Tejun Heo | 54936f8 | 2007-05-11 14:35:29 +0200 | [diff] [blame] | 2107 | |
Tejun Heo | 1ffc151 | 2008-03-23 15:16:53 +0900 | [diff] [blame] | 2108 | if (class == ATA_DEV_ATA) |
| 2109 | class = ATA_DEV_ATAPI; |
| 2110 | else |
| 2111 | class = ATA_DEV_ATA; |
| 2112 | goto retry; |
| 2113 | } |
| 2114 | |
| 2115 | /* Control reaches here iff the device aborted |
| 2116 | * both flavors of IDENTIFYs which happens |
| 2117 | * sometimes with phantom devices. |
| 2118 | */ |
| 2119 | ata_dev_printk(dev, KERN_DEBUG, |
| 2120 | "both IDENTIFYs aborted, assuming NODEV\n"); |
| 2121 | return -ENOENT; |
Tejun Heo | 54936f8 | 2007-05-11 14:35:29 +0200 | [diff] [blame] | 2122 | } |
| 2123 | |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2124 | rc = -EIO; |
| 2125 | reason = "I/O error"; |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2126 | goto err_out; |
| 2127 | } |
| 2128 | |
Tejun Heo | 43c9c59 | 2010-05-23 12:59:11 +0200 | [diff] [blame] | 2129 | if (dev->horkage & ATA_HORKAGE_DUMP_ID) { |
| 2130 | ata_dev_printk(dev, KERN_DEBUG, "dumping IDENTIFY data, " |
| 2131 | "class=%d may_fallback=%d tried_spinup=%d\n", |
| 2132 | class, may_fallback, tried_spinup); |
| 2133 | print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, |
| 2134 | 16, 2, id, ATA_ID_WORDS * sizeof(*id), true); |
| 2135 | } |
| 2136 | |
Tejun Heo | 54936f8 | 2007-05-11 14:35:29 +0200 | [diff] [blame] | 2137 | /* Falling back doesn't make sense if ID data was read |
| 2138 | * successfully at least once. |
| 2139 | */ |
| 2140 | may_fallback = 0; |
| 2141 | |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2142 | swap_buf_le16(id, ATA_ID_WORDS); |
| 2143 | |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2144 | /* sanity check */ |
Tejun Heo | a4f5749 | 2006-09-12 20:35:49 -0700 | [diff] [blame] | 2145 | rc = -EINVAL; |
Alan Cox | 6070068 | 2007-06-07 16:13:55 +0100 | [diff] [blame] | 2146 | reason = "device reports invalid type"; |
Tejun Heo | a4f5749 | 2006-09-12 20:35:49 -0700 | [diff] [blame] | 2147 | |
| 2148 | if (class == ATA_DEV_ATA) { |
| 2149 | if (!ata_id_is_ata(id) && !ata_id_is_cfa(id)) |
| 2150 | goto err_out; |
| 2151 | } else { |
| 2152 | if (ata_id_is_ata(id)) |
| 2153 | goto err_out; |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2154 | } |
| 2155 | |
Mark Lord | 169439c | 2007-04-17 18:26:07 -0400 | [diff] [blame] | 2156 | if (!tried_spinup && (id[2] == 0x37c8 || id[2] == 0x738c)) { |
| 2157 | tried_spinup = 1; |
| 2158 | /* |
| 2159 | * Drive powered-up in standby mode, and requires a specific |
| 2160 | * SET_FEATURES spin-up subcommand before it will accept |
| 2161 | * anything other than the original IDENTIFY command. |
| 2162 | */ |
Jeff Garzik | 218f3d3 | 2007-10-25 00:33:27 -0400 | [diff] [blame] | 2163 | err_mask = ata_dev_set_feature(dev, SETFEATURES_SPINUP, 0); |
Ryan Power | fb0582f9 | 2007-08-10 13:59:35 -0700 | [diff] [blame] | 2164 | if (err_mask && id[2] != 0x738c) { |
Mark Lord | 169439c | 2007-04-17 18:26:07 -0400 | [diff] [blame] | 2165 | rc = -EIO; |
| 2166 | reason = "SPINUP failed"; |
| 2167 | goto err_out; |
| 2168 | } |
| 2169 | /* |
| 2170 | * If the drive initially returned incomplete IDENTIFY info, |
| 2171 | * we now must reissue the IDENTIFY command. |
| 2172 | */ |
| 2173 | if (id[2] == 0x37c8) |
| 2174 | goto retry; |
| 2175 | } |
| 2176 | |
Tejun Heo | bff0464 | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 2177 | if ((flags & ATA_READID_POSTRESET) && class == ATA_DEV_ATA) { |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2178 | /* |
| 2179 | * The exact sequence expected by certain pre-ATA4 drives is: |
| 2180 | * SRST RESET |
Alan Cox | 50a9901 | 2007-08-08 14:27:00 +0100 | [diff] [blame] | 2181 | * IDENTIFY (optional in early ATA) |
| 2182 | * INITIALIZE DEVICE PARAMETERS (later IDE and ATA) |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2183 | * anything else.. |
| 2184 | * Some drives were very specific about that exact sequence. |
Alan Cox | 50a9901 | 2007-08-08 14:27:00 +0100 | [diff] [blame] | 2185 | * |
| 2186 | * Note that ATA4 says lba is mandatory so the second check |
Adam Buchbinder | c9404c9 | 2009-12-18 15:40:42 -0500 | [diff] [blame] | 2187 | * should never trigger. |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2188 | */ |
| 2189 | if (ata_id_major_version(id) < 4 || !ata_id_has_lba(id)) { |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 2190 | err_mask = ata_dev_init_params(dev, id[3], id[6]); |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2191 | if (err_mask) { |
| 2192 | rc = -EIO; |
| 2193 | reason = "INIT_DEV_PARAMS failed"; |
| 2194 | goto err_out; |
| 2195 | } |
| 2196 | |
| 2197 | /* current CHS translation info (id[53-58]) might be |
| 2198 | * changed. reread the identify device info. |
| 2199 | */ |
Tejun Heo | bff0464 | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 2200 | flags &= ~ATA_READID_POSTRESET; |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2201 | goto retry; |
| 2202 | } |
| 2203 | } |
| 2204 | |
| 2205 | *p_class = class; |
Tejun Heo | fe635c7 | 2006-05-15 20:57:35 +0900 | [diff] [blame] | 2206 | |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2207 | return 0; |
| 2208 | |
| 2209 | err_out: |
Tejun Heo | 8857455 | 2006-06-25 20:00:35 +0900 | [diff] [blame] | 2210 | if (ata_msg_warn(ap)) |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 2211 | ata_dev_printk(dev, KERN_WARNING, "failed to IDENTIFY " |
Tejun Heo | 8857455 | 2006-06-25 20:00:35 +0900 | [diff] [blame] | 2212 | "(%s, err_mask=0x%x)\n", reason, err_mask); |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2213 | return rc; |
| 2214 | } |
| 2215 | |
Tejun Heo | 9062712 | 2009-01-29 20:31:36 +0900 | [diff] [blame] | 2216 | static int ata_do_link_spd_horkage(struct ata_device *dev) |
| 2217 | { |
| 2218 | struct ata_link *plink = ata_dev_phys_link(dev); |
| 2219 | u32 target, target_limit; |
| 2220 | |
| 2221 | if (!sata_scr_valid(plink)) |
| 2222 | return 0; |
| 2223 | |
| 2224 | if (dev->horkage & ATA_HORKAGE_1_5_GBPS) |
| 2225 | target = 1; |
| 2226 | else |
| 2227 | return 0; |
| 2228 | |
| 2229 | target_limit = (1 << target) - 1; |
| 2230 | |
| 2231 | /* if already on stricter limit, no need to push further */ |
| 2232 | if (plink->sata_spd_limit <= target_limit) |
| 2233 | return 0; |
| 2234 | |
| 2235 | plink->sata_spd_limit = target_limit; |
| 2236 | |
| 2237 | /* Request another EH round by returning -EAGAIN if link is |
| 2238 | * going faster than the target speed. Forward progress is |
| 2239 | * guaranteed by setting sata_spd_limit to target_limit above. |
| 2240 | */ |
| 2241 | if (plink->sata_spd > target) { |
| 2242 | ata_dev_printk(dev, KERN_INFO, |
| 2243 | "applying link speed limit horkage to %s\n", |
| 2244 | sata_spd_string(target)); |
| 2245 | return -EAGAIN; |
| 2246 | } |
| 2247 | return 0; |
| 2248 | } |
| 2249 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 2250 | static inline u8 ata_dev_knobble(struct ata_device *dev) |
Tejun Heo | 4b2f3ed | 2006-03-01 16:09:36 +0900 | [diff] [blame] | 2251 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2252 | struct ata_port *ap = dev->link->ap; |
Jens Axboe | 9ce8e30 | 2008-08-27 15:23:18 +0200 | [diff] [blame] | 2253 | |
| 2254 | if (ata_dev_blacklisted(dev) & ATA_HORKAGE_BRIDGE_OK) |
| 2255 | return 0; |
| 2256 | |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2257 | return ((ap->cbl == ATA_CBL_SATA) && (!ata_id_is_sata(dev->id))); |
Tejun Heo | 4b2f3ed | 2006-03-01 16:09:36 +0900 | [diff] [blame] | 2258 | } |
| 2259 | |
Shaohua Li | 388539f | 2009-07-27 09:24:35 +0800 | [diff] [blame] | 2260 | static int ata_dev_config_ncq(struct ata_device *dev, |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 2261 | char *desc, size_t desc_sz) |
| 2262 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2263 | struct ata_port *ap = dev->link->ap; |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 2264 | int hdepth = 0, ddepth = ata_id_queue_depth(dev->id); |
Shaohua Li | 388539f | 2009-07-27 09:24:35 +0800 | [diff] [blame] | 2265 | unsigned int err_mask; |
| 2266 | char *aa_desc = ""; |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 2267 | |
| 2268 | if (!ata_id_has_ncq(dev->id)) { |
| 2269 | desc[0] = '\0'; |
Shaohua Li | 388539f | 2009-07-27 09:24:35 +0800 | [diff] [blame] | 2270 | return 0; |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 2271 | } |
Tejun Heo | 75683fe | 2007-07-05 13:31:27 +0900 | [diff] [blame] | 2272 | if (dev->horkage & ATA_HORKAGE_NONCQ) { |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 2273 | snprintf(desc, desc_sz, "NCQ (not used)"); |
Shaohua Li | 388539f | 2009-07-27 09:24:35 +0800 | [diff] [blame] | 2274 | return 0; |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 2275 | } |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 2276 | if (ap->flags & ATA_FLAG_NCQ) { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2277 | hdepth = min(ap->scsi_host->can_queue, ATA_MAX_QUEUE - 1); |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 2278 | dev->flags |= ATA_DFLAG_NCQ; |
| 2279 | } |
| 2280 | |
Shaohua Li | 388539f | 2009-07-27 09:24:35 +0800 | [diff] [blame] | 2281 | if (!(dev->horkage & ATA_HORKAGE_BROKEN_FPDMA_AA) && |
| 2282 | (ap->flags & ATA_FLAG_FPDMA_AA) && |
| 2283 | ata_id_has_fpdma_aa(dev->id)) { |
| 2284 | err_mask = ata_dev_set_feature(dev, SETFEATURES_SATA_ENABLE, |
| 2285 | SATA_FPDMA_AA); |
| 2286 | if (err_mask) { |
| 2287 | ata_dev_printk(dev, KERN_ERR, "failed to enable AA" |
| 2288 | "(error_mask=0x%x)\n", err_mask); |
| 2289 | if (err_mask != AC_ERR_DEV) { |
| 2290 | dev->horkage |= ATA_HORKAGE_BROKEN_FPDMA_AA; |
| 2291 | return -EIO; |
| 2292 | } |
| 2293 | } else |
| 2294 | aa_desc = ", AA"; |
| 2295 | } |
| 2296 | |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 2297 | if (hdepth >= ddepth) |
Shaohua Li | 388539f | 2009-07-27 09:24:35 +0800 | [diff] [blame] | 2298 | snprintf(desc, desc_sz, "NCQ (depth %d)%s", ddepth, aa_desc); |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 2299 | else |
Shaohua Li | 388539f | 2009-07-27 09:24:35 +0800 | [diff] [blame] | 2300 | snprintf(desc, desc_sz, "NCQ (depth %d/%d)%s", hdepth, |
| 2301 | ddepth, aa_desc); |
| 2302 | return 0; |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 2303 | } |
| 2304 | |
Tejun Heo | 49016ac | 2006-02-21 02:12:11 +0900 | [diff] [blame] | 2305 | /** |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2306 | * ata_dev_configure - Configure the specified ATA/ATAPI device |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2307 | * @dev: Target device to configure |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2308 | * |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2309 | * Configure @dev according to @dev->id. Generic and low-level |
| 2310 | * driver specific fixups are also applied. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2311 | * |
| 2312 | * LOCKING: |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2313 | * Kernel thread context (may sleep) |
| 2314 | * |
| 2315 | * RETURNS: |
| 2316 | * 0 on success, -errno otherwise |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2317 | */ |
Tejun Heo | efdaedc | 2006-11-01 18:38:52 +0900 | [diff] [blame] | 2318 | int ata_dev_configure(struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2319 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2320 | struct ata_port *ap = dev->link->ap; |
| 2321 | struct ata_eh_context *ehc = &dev->link->eh_context; |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 2322 | int print_info = ehc->i.flags & ATA_EHI_PRINTINFO; |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2323 | const u16 *id = dev->id; |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 2324 | unsigned long xfer_mask; |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 2325 | char revbuf[7]; /* XYZ-99\0 */ |
Eric D. Mudama | 3f64f56 | 2007-01-30 23:00:40 -0700 | [diff] [blame] | 2326 | char fwrevbuf[ATA_ID_FW_REV_LEN+1]; |
| 2327 | char modelbuf[ATA_ID_PROD_LEN+1]; |
Brian King | e6d902a | 2006-06-28 08:30:31 -0500 | [diff] [blame] | 2328 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2329 | |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 2330 | if (!ata_dev_enabled(dev) && ata_msg_info(ap)) { |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 2331 | ata_dev_printk(dev, KERN_INFO, "%s: ENTER/EXIT -- nodev\n", |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 2332 | __func__); |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2333 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2334 | } |
| 2335 | |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 2336 | if (ata_msg_probe(ap)) |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 2337 | ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2338 | |
Tejun Heo | 75683fe | 2007-07-05 13:31:27 +0900 | [diff] [blame] | 2339 | /* set horkage */ |
| 2340 | dev->horkage |= ata_dev_blacklisted(dev); |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 2341 | ata_force_horkage(dev); |
Tejun Heo | 75683fe | 2007-07-05 13:31:27 +0900 | [diff] [blame] | 2342 | |
Tejun Heo | 50af2fa | 2008-05-19 01:15:14 +0900 | [diff] [blame] | 2343 | if (dev->horkage & ATA_HORKAGE_DISABLE) { |
| 2344 | ata_dev_printk(dev, KERN_INFO, |
| 2345 | "unsupported device, disabling\n"); |
| 2346 | ata_dev_disable(dev); |
| 2347 | return 0; |
| 2348 | } |
| 2349 | |
Tejun Heo | 2486fa5 | 2008-07-31 07:52:40 +0900 | [diff] [blame] | 2350 | if ((!atapi_enabled || (ap->flags & ATA_FLAG_NO_ATAPI)) && |
| 2351 | dev->class == ATA_DEV_ATAPI) { |
| 2352 | ata_dev_printk(dev, KERN_WARNING, |
| 2353 | "WARNING: ATAPI is %s, device ignored.\n", |
| 2354 | atapi_enabled ? "not supported with this driver" |
| 2355 | : "disabled"); |
| 2356 | ata_dev_disable(dev); |
| 2357 | return 0; |
| 2358 | } |
| 2359 | |
Tejun Heo | 9062712 | 2009-01-29 20:31:36 +0900 | [diff] [blame] | 2360 | rc = ata_do_link_spd_horkage(dev); |
| 2361 | if (rc) |
| 2362 | return rc; |
| 2363 | |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 2364 | /* let ACPI work its magic */ |
| 2365 | rc = ata_acpi_on_devcfg(dev); |
| 2366 | if (rc) |
| 2367 | return rc; |
Kristen Carlson Accardi | 08573a8 | 2006-11-10 16:14:47 -0800 | [diff] [blame] | 2368 | |
Tejun Heo | 05027ad | 2007-09-03 12:32:57 +0900 | [diff] [blame] | 2369 | /* massage HPA, do it early as it might change IDENTIFY data */ |
| 2370 | rc = ata_hpa_resize(dev); |
| 2371 | if (rc) |
| 2372 | return rc; |
| 2373 | |
Tejun Heo | c39f5eb | 2006-03-13 19:51:19 +0900 | [diff] [blame] | 2374 | /* print device capabilities */ |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 2375 | if (ata_msg_probe(ap)) |
Tejun Heo | 8857455 | 2006-06-25 20:00:35 +0900 | [diff] [blame] | 2376 | ata_dev_printk(dev, KERN_DEBUG, |
| 2377 | "%s: cfg 49:%04x 82:%04x 83:%04x 84:%04x " |
| 2378 | "85:%04x 86:%04x 87:%04x 88:%04x\n", |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 2379 | __func__, |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 2380 | id[49], id[82], id[83], id[84], |
| 2381 | id[85], id[86], id[87], id[88]); |
Tejun Heo | c39f5eb | 2006-03-13 19:51:19 +0900 | [diff] [blame] | 2382 | |
Tejun Heo | 208a993 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 2383 | /* initialize to-be-configured parameters */ |
Tejun Heo | ea1dd4e | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 2384 | dev->flags &= ~ATA_DFLAG_CFG_MASK; |
Tejun Heo | 208a993 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 2385 | dev->max_sectors = 0; |
| 2386 | dev->cdb_len = 0; |
| 2387 | dev->n_sectors = 0; |
| 2388 | dev->cylinders = 0; |
| 2389 | dev->heads = 0; |
| 2390 | dev->sectors = 0; |
Mark Lord | e18086d | 2009-03-19 13:32:21 -0400 | [diff] [blame] | 2391 | dev->multi_count = 0; |
Tejun Heo | 208a993 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 2392 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2393 | /* |
| 2394 | * common ATA, ATAPI feature tests |
| 2395 | */ |
| 2396 | |
Tejun Heo | ff8854b | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 2397 | /* find max transfer mode; for printk only */ |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2398 | xfer_mask = ata_id_xfermask(id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2399 | |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 2400 | if (ata_msg_probe(ap)) |
| 2401 | ata_dump_id(id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2402 | |
Albert Lee | ef143d5 | 2007-06-05 13:01:33 +0800 | [diff] [blame] | 2403 | /* SCSI only uses 4-char revisions, dump full 8 chars from ATA */ |
| 2404 | ata_id_c_string(dev->id, fwrevbuf, ATA_ID_FW_REV, |
| 2405 | sizeof(fwrevbuf)); |
| 2406 | |
| 2407 | ata_id_c_string(dev->id, modelbuf, ATA_ID_PROD, |
| 2408 | sizeof(modelbuf)); |
| 2409 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2410 | /* ATA-specific feature tests */ |
| 2411 | if (dev->class == ATA_DEV_ATA) { |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 2412 | if (ata_id_is_cfa(id)) { |
Sergei Shtylyov | 62afe5d | 2009-04-13 20:50:00 +0400 | [diff] [blame] | 2413 | /* CPRM may make this media unusable */ |
| 2414 | if (id[ATA_ID_CFA_KEY_MGMT] & 1) |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 2415 | ata_dev_printk(dev, KERN_WARNING, |
| 2416 | "supports DRM functions and may " |
| 2417 | "not be fully accessable.\n"); |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 2418 | snprintf(revbuf, 7, "CFA"); |
Alan Cox | ae8d4ee | 2007-11-04 22:05:49 -0500 | [diff] [blame] | 2419 | } else { |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 2420 | snprintf(revbuf, 7, "ATA-%d", ata_id_major_version(id)); |
Alan Cox | ae8d4ee | 2007-11-04 22:05:49 -0500 | [diff] [blame] | 2421 | /* Warn the user if the device has TPM extensions */ |
| 2422 | if (ata_id_has_tpm(id)) |
| 2423 | ata_dev_printk(dev, KERN_WARNING, |
| 2424 | "supports DRM functions and may " |
| 2425 | "not be fully accessable.\n"); |
| 2426 | } |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 2427 | |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2428 | dev->n_sectors = ata_id_n_sectors(id); |
Tejun Heo | 2940740 | 2006-02-12 22:47:04 +0900 | [diff] [blame] | 2429 | |
Mark Lord | e18086d | 2009-03-19 13:32:21 -0400 | [diff] [blame] | 2430 | /* get current R/W Multiple count setting */ |
| 2431 | if ((dev->id[47] >> 8) == 0x80 && (dev->id[59] & 0x100)) { |
| 2432 | unsigned int max = dev->id[47] & 0xff; |
| 2433 | unsigned int cnt = dev->id[59] & 0xff; |
| 2434 | /* only recognize/allow powers of two here */ |
| 2435 | if (is_power_of_2(max) && is_power_of_2(cnt)) |
| 2436 | if (cnt <= max) |
| 2437 | dev->multi_count = cnt; |
| 2438 | } |
Eric D. Mudama | 3f64f56 | 2007-01-30 23:00:40 -0700 | [diff] [blame] | 2439 | |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2440 | if (ata_id_has_lba(id)) { |
Tejun Heo | 4c2d721 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 2441 | const char *lba_desc; |
Shaohua Li | 388539f | 2009-07-27 09:24:35 +0800 | [diff] [blame] | 2442 | char ncq_desc[24]; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2443 | |
Tejun Heo | 4c2d721 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 2444 | lba_desc = "LBA"; |
| 2445 | dev->flags |= ATA_DFLAG_LBA; |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2446 | if (ata_id_has_lba48(id)) { |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2447 | dev->flags |= ATA_DFLAG_LBA48; |
Tejun Heo | 4c2d721 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 2448 | lba_desc = "LBA48"; |
Tejun Heo | 6fc49ad | 2006-11-11 20:10:45 +0900 | [diff] [blame] | 2449 | |
| 2450 | if (dev->n_sectors >= (1UL << 28) && |
| 2451 | ata_id_has_flush_ext(id)) |
| 2452 | dev->flags |= ATA_DFLAG_FLUSH_EXT; |
Tejun Heo | 4c2d721 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 2453 | } |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2454 | |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 2455 | /* config NCQ */ |
Shaohua Li | 388539f | 2009-07-27 09:24:35 +0800 | [diff] [blame] | 2456 | rc = ata_dev_config_ncq(dev, ncq_desc, sizeof(ncq_desc)); |
| 2457 | if (rc) |
| 2458 | return rc; |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 2459 | |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2460 | /* print device info to dmesg */ |
Eric D. Mudama | 3f64f56 | 2007-01-30 23:00:40 -0700 | [diff] [blame] | 2461 | if (ata_msg_drv(ap) && print_info) { |
| 2462 | ata_dev_printk(dev, KERN_INFO, |
| 2463 | "%s: %s, %s, max %s\n", |
| 2464 | revbuf, modelbuf, fwrevbuf, |
| 2465 | ata_mode_string(xfer_mask)); |
| 2466 | ata_dev_printk(dev, KERN_INFO, |
| 2467 | "%Lu sectors, multi %u: %s %s\n", |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 2468 | (unsigned long long)dev->n_sectors, |
Eric D. Mudama | 3f64f56 | 2007-01-30 23:00:40 -0700 | [diff] [blame] | 2469 | dev->multi_count, lba_desc, ncq_desc); |
| 2470 | } |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2471 | } else { |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2472 | /* CHS */ |
| 2473 | |
| 2474 | /* Default translation */ |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2475 | dev->cylinders = id[1]; |
| 2476 | dev->heads = id[3]; |
| 2477 | dev->sectors = id[6]; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2478 | |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2479 | if (ata_id_current_chs_valid(id)) { |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2480 | /* Current CHS translation is valid. */ |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2481 | dev->cylinders = id[54]; |
| 2482 | dev->heads = id[55]; |
| 2483 | dev->sectors = id[56]; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 2484 | } |
| 2485 | |
| 2486 | /* print device info to dmesg */ |
Eric D. Mudama | 3f64f56 | 2007-01-30 23:00:40 -0700 | [diff] [blame] | 2487 | if (ata_msg_drv(ap) && print_info) { |
Tejun Heo | 8857455 | 2006-06-25 20:00:35 +0900 | [diff] [blame] | 2488 | ata_dev_printk(dev, KERN_INFO, |
Eric D. Mudama | 3f64f56 | 2007-01-30 23:00:40 -0700 | [diff] [blame] | 2489 | "%s: %s, %s, max %s\n", |
| 2490 | revbuf, modelbuf, fwrevbuf, |
| 2491 | ata_mode_string(xfer_mask)); |
Jeff Garzik | a84471f | 2007-02-26 05:51:33 -0500 | [diff] [blame] | 2492 | ata_dev_printk(dev, KERN_INFO, |
Eric D. Mudama | 3f64f56 | 2007-01-30 23:00:40 -0700 | [diff] [blame] | 2493 | "%Lu sectors, multi %u, CHS %u/%u/%u\n", |
| 2494 | (unsigned long long)dev->n_sectors, |
| 2495 | dev->multi_count, dev->cylinders, |
| 2496 | dev->heads, dev->sectors); |
| 2497 | } |
Albert Lee | 07f6f7d | 2005-11-01 19:33:20 +0800 | [diff] [blame] | 2498 | } |
| 2499 | |
Tejun Heo | 6e7846e | 2006-02-12 23:32:58 +0900 | [diff] [blame] | 2500 | dev->cdb_len = 16; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2501 | } |
| 2502 | |
| 2503 | /* ATAPI-specific feature tests */ |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 2504 | else if (dev->class == ATA_DEV_ATAPI) { |
Tejun Heo | 854c73a | 2007-09-23 13:14:11 +0900 | [diff] [blame] | 2505 | const char *cdb_intr_string = ""; |
| 2506 | const char *atapi_an_string = ""; |
Tejun Heo | 9116300 | 2008-02-21 13:25:50 +0900 | [diff] [blame] | 2507 | const char *dma_dir_string = ""; |
Tejun Heo | 7d77b24 | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 2508 | u32 sntf; |
Albert Lee | 08a556d | 2006-03-31 13:29:04 +0800 | [diff] [blame] | 2509 | |
Tejun Heo | 1148c3a | 2006-03-13 19:48:04 +0900 | [diff] [blame] | 2510 | rc = atapi_cdb_len(id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2511 | if ((rc < 12) || (rc > ATAPI_CDB_LEN)) { |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 2512 | if (ata_msg_warn(ap)) |
Tejun Heo | 8857455 | 2006-06-25 20:00:35 +0900 | [diff] [blame] | 2513 | ata_dev_printk(dev, KERN_WARNING, |
| 2514 | "unsupported CDB len\n"); |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2515 | rc = -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2516 | goto err_out_nosup; |
| 2517 | } |
Tejun Heo | 6e7846e | 2006-02-12 23:32:58 +0900 | [diff] [blame] | 2518 | dev->cdb_len = (unsigned int) rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2519 | |
Tejun Heo | 7d77b24 | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 2520 | /* Enable ATAPI AN if both the host and device have |
| 2521 | * the support. If PMP is attached, SNTF is required |
| 2522 | * to enable ATAPI AN to discern between PHY status |
| 2523 | * changed notifications and ATAPI ANs. |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 2524 | */ |
Tejun Heo | e7ecd43 | 2010-05-19 15:38:58 +0200 | [diff] [blame] | 2525 | if (atapi_an && |
| 2526 | (ap->flags & ATA_FLAG_AN) && ata_id_has_atapi_AN(id) && |
Tejun Heo | 071f44b | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 2527 | (!sata_pmp_attached(ap) || |
Tejun Heo | 7d77b24 | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 2528 | sata_scr_read(&ap->link, SCR_NOTIFICATION, &sntf) == 0)) { |
Tejun Heo | 854c73a | 2007-09-23 13:14:11 +0900 | [diff] [blame] | 2529 | unsigned int err_mask; |
| 2530 | |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 2531 | /* issue SET feature command to turn this on */ |
Jeff Garzik | 218f3d3 | 2007-10-25 00:33:27 -0400 | [diff] [blame] | 2532 | err_mask = ata_dev_set_feature(dev, |
| 2533 | SETFEATURES_SATA_ENABLE, SATA_AN); |
Tejun Heo | 854c73a | 2007-09-23 13:14:11 +0900 | [diff] [blame] | 2534 | if (err_mask) |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 2535 | ata_dev_printk(dev, KERN_ERR, |
Tejun Heo | 854c73a | 2007-09-23 13:14:11 +0900 | [diff] [blame] | 2536 | "failed to enable ATAPI AN " |
| 2537 | "(err_mask=0x%x)\n", err_mask); |
| 2538 | else { |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 2539 | dev->flags |= ATA_DFLAG_AN; |
Tejun Heo | 854c73a | 2007-09-23 13:14:11 +0900 | [diff] [blame] | 2540 | atapi_an_string = ", ATAPI AN"; |
| 2541 | } |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 2542 | } |
| 2543 | |
Albert Lee | 08a556d | 2006-03-31 13:29:04 +0800 | [diff] [blame] | 2544 | if (ata_id_cdb_intr(dev->id)) { |
Albert Lee | 312f7da | 2005-09-27 17:38:03 +0800 | [diff] [blame] | 2545 | dev->flags |= ATA_DFLAG_CDB_INTR; |
Albert Lee | 08a556d | 2006-03-31 13:29:04 +0800 | [diff] [blame] | 2546 | cdb_intr_string = ", CDB intr"; |
| 2547 | } |
Albert Lee | 312f7da | 2005-09-27 17:38:03 +0800 | [diff] [blame] | 2548 | |
Tejun Heo | 9116300 | 2008-02-21 13:25:50 +0900 | [diff] [blame] | 2549 | if (atapi_dmadir || atapi_id_dmadir(dev->id)) { |
| 2550 | dev->flags |= ATA_DFLAG_DMADIR; |
| 2551 | dma_dir_string = ", DMADIR"; |
| 2552 | } |
| 2553 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2554 | /* print device info to dmesg */ |
Borislav Petkov | 5afc814 | 2006-06-27 14:51:25 +0200 | [diff] [blame] | 2555 | if (ata_msg_drv(ap) && print_info) |
Albert Lee | ef143d5 | 2007-06-05 13:01:33 +0800 | [diff] [blame] | 2556 | ata_dev_printk(dev, KERN_INFO, |
Tejun Heo | 9116300 | 2008-02-21 13:25:50 +0900 | [diff] [blame] | 2557 | "ATAPI: %s, %s, max %s%s%s%s\n", |
Albert Lee | ef143d5 | 2007-06-05 13:01:33 +0800 | [diff] [blame] | 2558 | modelbuf, fwrevbuf, |
Tejun Heo | 12436c3 | 2006-05-15 20:59:15 +0900 | [diff] [blame] | 2559 | ata_mode_string(xfer_mask), |
Tejun Heo | 9116300 | 2008-02-21 13:25:50 +0900 | [diff] [blame] | 2560 | cdb_intr_string, atapi_an_string, |
| 2561 | dma_dir_string); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2562 | } |
| 2563 | |
Tejun Heo | 914ed35 | 2006-11-01 18:39:55 +0900 | [diff] [blame] | 2564 | /* determine max_sectors */ |
| 2565 | dev->max_sectors = ATA_MAX_SECTORS; |
| 2566 | if (dev->flags & ATA_DFLAG_LBA48) |
| 2567 | dev->max_sectors = ATA_MAX_SECTORS_LBA48; |
| 2568 | |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 2569 | if (!(dev->horkage & ATA_HORKAGE_IPM)) { |
| 2570 | if (ata_id_has_hipm(dev->id)) |
| 2571 | dev->flags |= ATA_DFLAG_HIPM; |
| 2572 | if (ata_id_has_dipm(dev->id)) |
| 2573 | dev->flags |= ATA_DFLAG_DIPM; |
| 2574 | } |
| 2575 | |
Alan Cox | c5038fc | 2007-10-25 14:21:16 +0100 | [diff] [blame] | 2576 | /* Limit PATA drive on SATA cable bridge transfers to udma5, |
| 2577 | 200 sectors */ |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 2578 | if (ata_dev_knobble(dev)) { |
Borislav Petkov | 5afc814 | 2006-06-27 14:51:25 +0200 | [diff] [blame] | 2579 | if (ata_msg_drv(ap) && print_info) |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 2580 | ata_dev_printk(dev, KERN_INFO, |
| 2581 | "applying bridge limits\n"); |
Tejun Heo | 5a52913 | 2006-03-24 14:07:50 +0900 | [diff] [blame] | 2582 | dev->udma_mask &= ATA_UDMA5; |
Tejun Heo | 4b2f3ed | 2006-03-01 16:09:36 +0900 | [diff] [blame] | 2583 | dev->max_sectors = ATA_MAX_SECTORS; |
| 2584 | } |
| 2585 | |
Tony Battersby | f8d8e57 | 2007-10-30 11:44:35 -0400 | [diff] [blame] | 2586 | if ((dev->class == ATA_DEV_ATAPI) && |
Albert Lee | f442cd8 | 2007-11-15 10:35:47 +0900 | [diff] [blame] | 2587 | (atapi_command_packet_set(id) == TYPE_TAPE)) { |
Tony Battersby | f8d8e57 | 2007-10-30 11:44:35 -0400 | [diff] [blame] | 2588 | dev->max_sectors = ATA_MAX_SECTORS_TAPE; |
Albert Lee | f442cd8 | 2007-11-15 10:35:47 +0900 | [diff] [blame] | 2589 | dev->horkage |= ATA_HORKAGE_STUCK_ERR; |
| 2590 | } |
Tony Battersby | f8d8e57 | 2007-10-30 11:44:35 -0400 | [diff] [blame] | 2591 | |
Tejun Heo | 75683fe | 2007-07-05 13:31:27 +0900 | [diff] [blame] | 2592 | if (dev->horkage & ATA_HORKAGE_MAX_SEC_128) |
Tejun Heo | 03ec52d | 2007-04-12 13:38:11 +0900 | [diff] [blame] | 2593 | dev->max_sectors = min_t(unsigned int, ATA_MAX_SECTORS_128, |
| 2594 | dev->max_sectors); |
Albert Lee | 18d6e9d | 2007-04-02 11:34:15 +0800 | [diff] [blame] | 2595 | |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 2596 | if (ata_dev_blacklisted(dev) & ATA_HORKAGE_IPM) { |
| 2597 | dev->horkage |= ATA_HORKAGE_IPM; |
| 2598 | |
| 2599 | /* reset link pm_policy for this port to no pm */ |
| 2600 | ap->pm_policy = MAX_PERFORMANCE; |
| 2601 | } |
| 2602 | |
Tejun Heo | 4b2f3ed | 2006-03-01 16:09:36 +0900 | [diff] [blame] | 2603 | if (ap->ops->dev_config) |
Alan | cd0d3bb | 2007-03-02 00:56:15 +0000 | [diff] [blame] | 2604 | ap->ops->dev_config(dev); |
Tejun Heo | 4b2f3ed | 2006-03-01 16:09:36 +0900 | [diff] [blame] | 2605 | |
Alan Cox | c5038fc | 2007-10-25 14:21:16 +0100 | [diff] [blame] | 2606 | if (dev->horkage & ATA_HORKAGE_DIAGNOSTIC) { |
| 2607 | /* Let the user know. We don't want to disallow opens for |
| 2608 | rescue purposes, or in case the vendor is just a blithering |
| 2609 | idiot. Do this after the dev_config call as some controllers |
| 2610 | with buggy firmware may want to avoid reporting false device |
| 2611 | bugs */ |
| 2612 | |
| 2613 | if (print_info) { |
| 2614 | ata_dev_printk(dev, KERN_WARNING, |
| 2615 | "Drive reports diagnostics failure. This may indicate a drive\n"); |
| 2616 | ata_dev_printk(dev, KERN_WARNING, |
| 2617 | "fault or invalid emulation. Contact drive vendor for information.\n"); |
| 2618 | } |
| 2619 | } |
| 2620 | |
Tejun Heo | ac70a96 | 2008-11-27 13:36:48 +0900 | [diff] [blame] | 2621 | if ((dev->horkage & ATA_HORKAGE_FIRMWARE_WARN) && print_info) { |
| 2622 | ata_dev_printk(dev, KERN_WARNING, "WARNING: device requires " |
| 2623 | "firmware update to be fully functional.\n"); |
| 2624 | ata_dev_printk(dev, KERN_WARNING, " contact the vendor " |
| 2625 | "or visit http://ata.wiki.kernel.org.\n"); |
| 2626 | } |
| 2627 | |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2628 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2629 | |
| 2630 | err_out_nosup: |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 2631 | if (ata_msg_probe(ap)) |
Tejun Heo | 8857455 | 2006-06-25 20:00:35 +0900 | [diff] [blame] | 2632 | ata_dev_printk(dev, KERN_DEBUG, |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 2633 | "%s: EXIT, err\n", __func__); |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2634 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2635 | } |
| 2636 | |
| 2637 | /** |
Alan Cox | 2e41e8e | 2007-03-08 23:19:19 +0000 | [diff] [blame] | 2638 | * ata_cable_40wire - return 40 wire cable type |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 2639 | * @ap: port |
| 2640 | * |
Alan Cox | 2e41e8e | 2007-03-08 23:19:19 +0000 | [diff] [blame] | 2641 | * Helper method for drivers which want to hardwire 40 wire cable |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 2642 | * detection. |
| 2643 | */ |
| 2644 | |
| 2645 | int ata_cable_40wire(struct ata_port *ap) |
| 2646 | { |
| 2647 | return ATA_CBL_PATA40; |
| 2648 | } |
| 2649 | |
| 2650 | /** |
Alan Cox | 2e41e8e | 2007-03-08 23:19:19 +0000 | [diff] [blame] | 2651 | * ata_cable_80wire - return 80 wire cable type |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 2652 | * @ap: port |
| 2653 | * |
Alan Cox | 2e41e8e | 2007-03-08 23:19:19 +0000 | [diff] [blame] | 2654 | * Helper method for drivers which want to hardwire 80 wire cable |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 2655 | * detection. |
| 2656 | */ |
| 2657 | |
| 2658 | int ata_cable_80wire(struct ata_port *ap) |
| 2659 | { |
| 2660 | return ATA_CBL_PATA80; |
| 2661 | } |
| 2662 | |
| 2663 | /** |
| 2664 | * ata_cable_unknown - return unknown PATA cable. |
| 2665 | * @ap: port |
| 2666 | * |
| 2667 | * Helper method for drivers which have no PATA cable detection. |
| 2668 | */ |
| 2669 | |
| 2670 | int ata_cable_unknown(struct ata_port *ap) |
| 2671 | { |
| 2672 | return ATA_CBL_PATA_UNK; |
| 2673 | } |
| 2674 | |
| 2675 | /** |
Tejun Heo | c88f90c | 2007-11-27 19:43:48 +0900 | [diff] [blame] | 2676 | * ata_cable_ignore - return ignored PATA cable. |
| 2677 | * @ap: port |
| 2678 | * |
| 2679 | * Helper method for drivers which don't use cable type to limit |
| 2680 | * transfer mode. |
| 2681 | */ |
| 2682 | int ata_cable_ignore(struct ata_port *ap) |
| 2683 | { |
| 2684 | return ATA_CBL_PATA_IGN; |
| 2685 | } |
| 2686 | |
| 2687 | /** |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 2688 | * ata_cable_sata - return SATA cable type |
| 2689 | * @ap: port |
| 2690 | * |
| 2691 | * Helper method for drivers which have SATA cables |
| 2692 | */ |
| 2693 | |
| 2694 | int ata_cable_sata(struct ata_port *ap) |
| 2695 | { |
| 2696 | return ATA_CBL_SATA; |
| 2697 | } |
| 2698 | |
| 2699 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2700 | * ata_bus_probe - Reset and probe ATA bus |
| 2701 | * @ap: Bus to probe |
| 2702 | * |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 2703 | * Master ATA bus probing function. Initiates a hardware-dependent |
| 2704 | * bus reset, then attempts to identify any devices found on |
| 2705 | * the bus. |
| 2706 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2707 | * LOCKING: |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 2708 | * PCI/etc. bus probe sem. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2709 | * |
| 2710 | * RETURNS: |
Tejun Heo | 96072e6 | 2006-04-01 01:38:17 +0900 | [diff] [blame] | 2711 | * Zero on success, negative errno otherwise. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2712 | */ |
| 2713 | |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 2714 | int ata_bus_probe(struct ata_port *ap) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2715 | { |
Tejun Heo | 28ca5c5 | 2006-03-01 16:09:36 +0900 | [diff] [blame] | 2716 | unsigned int classes[ATA_MAX_DEVICES]; |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2717 | int tries[ATA_MAX_DEVICES]; |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2718 | int rc; |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 2719 | struct ata_device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2720 | |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 2721 | ata_for_each_dev(dev, &ap->link, ALL) |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2722 | tries[dev->devno] = ATA_PROBE_MAX_TRIES; |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2723 | |
| 2724 | retry: |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 2725 | ata_for_each_dev(dev, &ap->link, ALL) { |
Tejun Heo | cdeab11 | 2007-10-29 16:41:09 +0900 | [diff] [blame] | 2726 | /* If we issue an SRST then an ATA drive (not ATAPI) |
| 2727 | * may change configuration and be in PIO0 timing. If |
| 2728 | * we do a hard reset (or are coming from power on) |
| 2729 | * this is true for ATA or ATAPI. Until we've set a |
| 2730 | * suitable controller mode we should not touch the |
| 2731 | * bus as we may be talking too fast. |
| 2732 | */ |
| 2733 | dev->pio_mode = XFER_PIO_0; |
| 2734 | |
| 2735 | /* If the controller has a pio mode setup function |
| 2736 | * then use it to set the chipset to rights. Don't |
| 2737 | * touch the DMA setup as that will be dealt with when |
| 2738 | * configuring devices. |
| 2739 | */ |
| 2740 | if (ap->ops->set_piomode) |
| 2741 | ap->ops->set_piomode(ap, dev); |
| 2742 | } |
| 2743 | |
Tejun Heo | 2044470 | 2006-03-13 01:57:01 +0900 | [diff] [blame] | 2744 | /* reset and determine device classes */ |
Tejun Heo | 52783c5 | 2006-05-31 18:28:22 +0900 | [diff] [blame] | 2745 | ap->ops->phy_reset(ap); |
Tejun Heo | 2061a47 | 2006-03-12 00:57:39 +0900 | [diff] [blame] | 2746 | |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 2747 | ata_for_each_dev(dev, &ap->link, ALL) { |
Tejun Heo | 3e4ec34 | 2010-05-10 21:41:30 +0200 | [diff] [blame] | 2748 | if (dev->class != ATA_DEV_UNKNOWN) |
Tejun Heo | 52783c5 | 2006-05-31 18:28:22 +0900 | [diff] [blame] | 2749 | classes[dev->devno] = dev->class; |
| 2750 | else |
| 2751 | classes[dev->devno] = ATA_DEV_NONE; |
Tejun Heo | 2044470 | 2006-03-13 01:57:01 +0900 | [diff] [blame] | 2752 | |
Tejun Heo | 52783c5 | 2006-05-31 18:28:22 +0900 | [diff] [blame] | 2753 | dev->class = ATA_DEV_UNKNOWN; |
Tejun Heo | 28ca5c5 | 2006-03-01 16:09:36 +0900 | [diff] [blame] | 2754 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2755 | |
Jeff Garzik | f31f0cc | 2007-03-02 17:47:28 -0500 | [diff] [blame] | 2756 | /* read IDENTIFY page and configure devices. We have to do the identify |
| 2757 | specific sequence bass-ackwards so that PDIAG- is released by |
| 2758 | the slave device */ |
| 2759 | |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 2760 | ata_for_each_dev(dev, &ap->link, ALL_REVERSE) { |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2761 | if (tries[dev->devno]) |
| 2762 | dev->class = classes[dev->devno]; |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2763 | |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 2764 | if (!ata_dev_enabled(dev)) |
Tejun Heo | ffeae41 | 2006-03-01 16:09:35 +0900 | [diff] [blame] | 2765 | continue; |
| 2766 | |
Tejun Heo | bff0464 | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 2767 | rc = ata_dev_read_id(dev, &dev->class, ATA_READID_POSTRESET, |
| 2768 | dev->id); |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2769 | if (rc) |
| 2770 | goto fail; |
Jeff Garzik | f31f0cc | 2007-03-02 17:47:28 -0500 | [diff] [blame] | 2771 | } |
| 2772 | |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 2773 | /* Now ask for the cable type as PDIAG- should have been released */ |
| 2774 | if (ap->ops->cable_detect) |
| 2775 | ap->cbl = ap->ops->cable_detect(ap); |
| 2776 | |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 2777 | /* We may have SATA bridge glue hiding here irrespective of |
| 2778 | * the reported cable types and sensed types. When SATA |
| 2779 | * drives indicate we have a bridge, we don't know which end |
| 2780 | * of the link the bridge is which is a problem. |
| 2781 | */ |
| 2782 | ata_for_each_dev(dev, &ap->link, ENABLED) |
Alan Cox | 614fe29 | 2007-08-22 23:22:45 +0100 | [diff] [blame] | 2783 | if (ata_id_is_sata(dev->id)) |
| 2784 | ap->cbl = ATA_CBL_SATA; |
Alan Cox | 614fe29 | 2007-08-22 23:22:45 +0100 | [diff] [blame] | 2785 | |
Jeff Garzik | f31f0cc | 2007-03-02 17:47:28 -0500 | [diff] [blame] | 2786 | /* After the identify sequence we can now set up the devices. We do |
| 2787 | this in the normal order so that the user doesn't get confused */ |
| 2788 | |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 2789 | ata_for_each_dev(dev, &ap->link, ENABLED) { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2790 | ap->link.eh_context.i.flags |= ATA_EHI_PRINTINFO; |
Tejun Heo | efdaedc | 2006-11-01 18:38:52 +0900 | [diff] [blame] | 2791 | rc = ata_dev_configure(dev); |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2792 | ap->link.eh_context.i.flags &= ~ATA_EHI_PRINTINFO; |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2793 | if (rc) |
| 2794 | goto fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2795 | } |
| 2796 | |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 2797 | /* configure transfer mode */ |
Tejun Heo | 0260731 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2798 | rc = ata_set_mode(&ap->link, &dev); |
Tejun Heo | 4ae72a1 | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 2799 | if (rc) |
Tejun Heo | 51713d3 | 2006-04-11 22:26:29 +0900 | [diff] [blame] | 2800 | goto fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2801 | |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 2802 | ata_for_each_dev(dev, &ap->link, ENABLED) |
| 2803 | return 0; |
Alan Cox | e35a9e0 | 2006-03-27 18:46:37 +0100 | [diff] [blame] | 2804 | |
Tejun Heo | 96072e6 | 2006-04-01 01:38:17 +0900 | [diff] [blame] | 2805 | return -ENODEV; |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2806 | |
| 2807 | fail: |
Tejun Heo | 4ae72a1 | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 2808 | tries[dev->devno]--; |
| 2809 | |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2810 | switch (rc) { |
| 2811 | case -EINVAL: |
Tejun Heo | 4ae72a1 | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 2812 | /* eeek, something went very wrong, give up */ |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2813 | tries[dev->devno] = 0; |
| 2814 | break; |
Tejun Heo | 4ae72a1 | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 2815 | |
| 2816 | case -ENODEV: |
| 2817 | /* give it just one more chance */ |
| 2818 | tries[dev->devno] = min(tries[dev->devno], 1); |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2819 | case -EIO: |
Tejun Heo | 4ae72a1 | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 2820 | if (tries[dev->devno] == 1) { |
| 2821 | /* This is the last chance, better to slow |
| 2822 | * down than lose it. |
| 2823 | */ |
Tejun Heo | a07d499 | 2009-01-29 20:31:33 +0900 | [diff] [blame] | 2824 | sata_down_spd_limit(&ap->link, 0); |
Tejun Heo | 4ae72a1 | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 2825 | ata_down_xfermask_limit(dev, ATA_DNXFER_PIO); |
| 2826 | } |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2827 | } |
| 2828 | |
Tejun Heo | 4ae72a1 | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 2829 | if (!tries[dev->devno]) |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 2830 | ata_dev_disable(dev); |
Tejun Heo | ec57375 | 2006-04-11 22:26:29 +0900 | [diff] [blame] | 2831 | |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 2832 | goto retry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2833 | } |
| 2834 | |
| 2835 | /** |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2836 | * sata_print_link_status - Print SATA link status |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2837 | * @link: SATA link to printk link status about |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2838 | * |
| 2839 | * This function prints link speed and status of a SATA link. |
| 2840 | * |
| 2841 | * LOCKING: |
| 2842 | * None. |
| 2843 | */ |
Adrian Bunk | 6bdb4fc | 2008-04-21 11:51:11 +0300 | [diff] [blame] | 2844 | static void sata_print_link_status(struct ata_link *link) |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2845 | { |
Tejun Heo | 6d5f973 | 2006-04-03 00:09:41 +0900 | [diff] [blame] | 2846 | u32 sstatus, scontrol, tmp; |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2847 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2848 | if (sata_scr_read(link, SCR_STATUS, &sstatus)) |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2849 | return; |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2850 | sata_scr_read(link, SCR_CONTROL, &scontrol); |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2851 | |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 2852 | if (ata_phys_link_online(link)) { |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2853 | tmp = (sstatus >> 4) & 0xf; |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2854 | ata_link_printk(link, KERN_INFO, |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 2855 | "SATA link up %s (SStatus %X SControl %X)\n", |
| 2856 | sata_spd_string(tmp), sstatus, scontrol); |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2857 | } else { |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2858 | ata_link_printk(link, KERN_INFO, |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 2859 | "SATA link down (SStatus %X SControl %X)\n", |
| 2860 | sstatus, scontrol); |
Tejun Heo | 3be680b | 2005-12-19 22:35:02 +0900 | [diff] [blame] | 2861 | } |
| 2862 | } |
| 2863 | |
| 2864 | /** |
Alan Cox | ebdfca6 | 2006-03-23 15:38:34 +0000 | [diff] [blame] | 2865 | * ata_dev_pair - return other device on cable |
Alan Cox | ebdfca6 | 2006-03-23 15:38:34 +0000 | [diff] [blame] | 2866 | * @adev: device |
| 2867 | * |
| 2868 | * Obtain the other device on the same cable, or if none is |
| 2869 | * present NULL is returned |
| 2870 | */ |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 2871 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 2872 | struct ata_device *ata_dev_pair(struct ata_device *adev) |
Alan Cox | ebdfca6 | 2006-03-23 15:38:34 +0000 | [diff] [blame] | 2873 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2874 | struct ata_link *link = adev->link; |
| 2875 | struct ata_device *pair = &link->device[1 - adev->devno]; |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 2876 | if (!ata_dev_enabled(pair)) |
Alan Cox | ebdfca6 | 2006-03-23 15:38:34 +0000 | [diff] [blame] | 2877 | return NULL; |
| 2878 | return pair; |
| 2879 | } |
| 2880 | |
| 2881 | /** |
Tejun Heo | 3c567b7 | 2006-05-15 20:57:23 +0900 | [diff] [blame] | 2882 | * sata_down_spd_limit - adjust SATA spd limit downward |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2883 | * @link: Link to adjust SATA spd limit for |
Tejun Heo | a07d499 | 2009-01-29 20:31:33 +0900 | [diff] [blame] | 2884 | * @spd_limit: Additional limit |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2885 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2886 | * Adjust SATA spd limit of @link downward. Note that this |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2887 | * function only adjusts the limit. The change must be applied |
Tejun Heo | 3c567b7 | 2006-05-15 20:57:23 +0900 | [diff] [blame] | 2888 | * using sata_set_spd(). |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2889 | * |
Tejun Heo | a07d499 | 2009-01-29 20:31:33 +0900 | [diff] [blame] | 2890 | * If @spd_limit is non-zero, the speed is limited to equal to or |
| 2891 | * lower than @spd_limit if such speed is supported. If |
| 2892 | * @spd_limit is slower than any supported speed, only the lowest |
| 2893 | * supported speed is allowed. |
| 2894 | * |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2895 | * LOCKING: |
| 2896 | * Inherited from caller. |
| 2897 | * |
| 2898 | * RETURNS: |
| 2899 | * 0 on success, negative errno on failure |
| 2900 | */ |
Tejun Heo | a07d499 | 2009-01-29 20:31:33 +0900 | [diff] [blame] | 2901 | int sata_down_spd_limit(struct ata_link *link, u32 spd_limit) |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2902 | { |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 2903 | u32 sstatus, spd, mask; |
Tejun Heo | a07d499 | 2009-01-29 20:31:33 +0900 | [diff] [blame] | 2904 | int rc, bit; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2905 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2906 | if (!sata_scr_valid(link)) |
Tejun Heo | 008a789 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2907 | return -EOPNOTSUPP; |
| 2908 | |
| 2909 | /* If SCR can be read, use it to determine the current SPD. |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2910 | * If not, use cached value in link->sata_spd. |
Tejun Heo | 008a789 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2911 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2912 | rc = sata_scr_read(link, SCR_STATUS, &sstatus); |
Tejun Heo | 9913ff8 | 2009-01-29 20:31:31 +0900 | [diff] [blame] | 2913 | if (rc == 0 && ata_sstatus_online(sstatus)) |
Tejun Heo | 008a789 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2914 | spd = (sstatus >> 4) & 0xf; |
| 2915 | else |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2916 | spd = link->sata_spd; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2917 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2918 | mask = link->sata_spd_limit; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2919 | if (mask <= 1) |
| 2920 | return -EINVAL; |
Tejun Heo | 008a789 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2921 | |
| 2922 | /* unconditionally mask off the highest bit */ |
Tejun Heo | a07d499 | 2009-01-29 20:31:33 +0900 | [diff] [blame] | 2923 | bit = fls(mask) - 1; |
| 2924 | mask &= ~(1 << bit); |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2925 | |
Tejun Heo | 008a789 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2926 | /* Mask off all speeds higher than or equal to the current |
| 2927 | * one. Force 1.5Gbps if current SPD is not available. |
| 2928 | */ |
| 2929 | if (spd > 1) |
| 2930 | mask &= (1 << (spd - 1)) - 1; |
| 2931 | else |
| 2932 | mask &= 1; |
| 2933 | |
| 2934 | /* were we already at the bottom? */ |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2935 | if (!mask) |
| 2936 | return -EINVAL; |
| 2937 | |
Tejun Heo | a07d499 | 2009-01-29 20:31:33 +0900 | [diff] [blame] | 2938 | if (spd_limit) { |
| 2939 | if (mask & ((1 << spd_limit) - 1)) |
| 2940 | mask &= (1 << spd_limit) - 1; |
| 2941 | else { |
| 2942 | bit = ffs(mask) - 1; |
| 2943 | mask = 1 << bit; |
| 2944 | } |
| 2945 | } |
| 2946 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2947 | link->sata_spd_limit = mask; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2948 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2949 | 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] | 2950 | sata_spd_string(fls(mask))); |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2951 | |
| 2952 | return 0; |
| 2953 | } |
| 2954 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2955 | static int __sata_set_spd_needed(struct ata_link *link, u32 *scontrol) |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2956 | { |
Tejun Heo | 5270222 | 2007-10-31 10:17:07 +0900 | [diff] [blame] | 2957 | struct ata_link *host_link = &link->ap->link; |
| 2958 | u32 limit, target, spd; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2959 | |
Tejun Heo | 5270222 | 2007-10-31 10:17:07 +0900 | [diff] [blame] | 2960 | limit = link->sata_spd_limit; |
| 2961 | |
| 2962 | /* Don't configure downstream link faster than upstream link. |
| 2963 | * It doesn't speed up anything and some PMPs choke on such |
| 2964 | * configuration. |
| 2965 | */ |
| 2966 | if (!ata_is_host_link(link) && host_link->sata_spd) |
| 2967 | limit &= (1 << host_link->sata_spd) - 1; |
| 2968 | |
| 2969 | if (limit == UINT_MAX) |
| 2970 | target = 0; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2971 | else |
Tejun Heo | 5270222 | 2007-10-31 10:17:07 +0900 | [diff] [blame] | 2972 | target = fls(limit); |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2973 | |
| 2974 | spd = (*scontrol >> 4) & 0xf; |
Tejun Heo | 5270222 | 2007-10-31 10:17:07 +0900 | [diff] [blame] | 2975 | *scontrol = (*scontrol & ~0xf0) | ((target & 0xf) << 4); |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2976 | |
Tejun Heo | 5270222 | 2007-10-31 10:17:07 +0900 | [diff] [blame] | 2977 | return spd != target; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2978 | } |
| 2979 | |
| 2980 | /** |
Tejun Heo | 3c567b7 | 2006-05-15 20:57:23 +0900 | [diff] [blame] | 2981 | * sata_set_spd_needed - is SATA spd configuration needed |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2982 | * @link: Link in question |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2983 | * |
| 2984 | * Test whether the spd limit in SControl matches |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2985 | * @link->sata_spd_limit. This function is used to determine |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2986 | * whether hardreset is necessary to apply SATA spd |
| 2987 | * configuration. |
| 2988 | * |
| 2989 | * LOCKING: |
| 2990 | * Inherited from caller. |
| 2991 | * |
| 2992 | * RETURNS: |
| 2993 | * 1 if SATA spd configuration is needed, 0 otherwise. |
| 2994 | */ |
Adrian Bunk | 1dc55e8 | 2008-04-21 11:51:17 +0300 | [diff] [blame] | 2995 | static int sata_set_spd_needed(struct ata_link *link) |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 2996 | { |
| 2997 | u32 scontrol; |
| 2998 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2999 | if (sata_scr_read(link, SCR_CONTROL, &scontrol)) |
Tejun Heo | db64bcf | 2007-10-31 10:17:06 +0900 | [diff] [blame] | 3000 | return 1; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 3001 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3002 | return __sata_set_spd_needed(link, &scontrol); |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 3003 | } |
| 3004 | |
| 3005 | /** |
Tejun Heo | 3c567b7 | 2006-05-15 20:57:23 +0900 | [diff] [blame] | 3006 | * sata_set_spd - set SATA spd according to spd limit |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3007 | * @link: Link to set SATA spd for |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 3008 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3009 | * Set SATA spd of @link according to sata_spd_limit. |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 3010 | * |
| 3011 | * LOCKING: |
| 3012 | * Inherited from caller. |
| 3013 | * |
| 3014 | * RETURNS: |
| 3015 | * 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] | 3016 | * changed. Negative errno if SCR registers are inaccessible. |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 3017 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3018 | int sata_set_spd(struct ata_link *link) |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 3019 | { |
| 3020 | u32 scontrol; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3021 | int rc; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 3022 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3023 | if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol))) |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3024 | return rc; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 3025 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3026 | if (!__sata_set_spd_needed(link, &scontrol)) |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 3027 | return 0; |
| 3028 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3029 | if ((rc = sata_scr_write(link, SCR_CONTROL, scontrol))) |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3030 | return rc; |
| 3031 | |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 3032 | return 1; |
| 3033 | } |
| 3034 | |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3035 | /* |
| 3036 | * This mode timing computation functionality is ported over from |
| 3037 | * drivers/ide/ide-timing.h and was originally written by Vojtech Pavlik |
| 3038 | */ |
| 3039 | /* |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 3040 | * 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] | 3041 | * These were taken from ATA/ATAPI-6 standard, rev 0a, except |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 3042 | * for UDMA6, which is currently supported only by Maxtor drives. |
| 3043 | * |
| 3044 | * 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] | 3045 | */ |
| 3046 | |
| 3047 | static const struct ata_timing ata_timing[] = { |
David Daney | 3ada9c1 | 2009-01-15 17:45:31 -0800 | [diff] [blame] | 3048 | /* { XFER_PIO_SLOW, 120, 290, 240, 960, 290, 240, 0, 960, 0 }, */ |
| 3049 | { XFER_PIO_0, 70, 290, 240, 600, 165, 150, 0, 600, 0 }, |
| 3050 | { XFER_PIO_1, 50, 290, 93, 383, 125, 100, 0, 383, 0 }, |
| 3051 | { XFER_PIO_2, 30, 290, 40, 330, 100, 90, 0, 240, 0 }, |
| 3052 | { XFER_PIO_3, 30, 80, 70, 180, 80, 70, 0, 180, 0 }, |
| 3053 | { XFER_PIO_4, 25, 70, 25, 120, 70, 25, 0, 120, 0 }, |
| 3054 | { XFER_PIO_5, 15, 65, 25, 100, 65, 25, 0, 100, 0 }, |
| 3055 | { XFER_PIO_6, 10, 55, 20, 80, 55, 20, 0, 80, 0 }, |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3056 | |
David Daney | 3ada9c1 | 2009-01-15 17:45:31 -0800 | [diff] [blame] | 3057 | { XFER_SW_DMA_0, 120, 0, 0, 0, 480, 480, 50, 960, 0 }, |
| 3058 | { XFER_SW_DMA_1, 90, 0, 0, 0, 240, 240, 30, 480, 0 }, |
| 3059 | { XFER_SW_DMA_2, 60, 0, 0, 0, 120, 120, 20, 240, 0 }, |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3060 | |
David Daney | 3ada9c1 | 2009-01-15 17:45:31 -0800 | [diff] [blame] | 3061 | { XFER_MW_DMA_0, 60, 0, 0, 0, 215, 215, 20, 480, 0 }, |
| 3062 | { XFER_MW_DMA_1, 45, 0, 0, 0, 80, 50, 5, 150, 0 }, |
| 3063 | { XFER_MW_DMA_2, 25, 0, 0, 0, 70, 25, 5, 120, 0 }, |
| 3064 | { XFER_MW_DMA_3, 25, 0, 0, 0, 65, 25, 5, 100, 0 }, |
| 3065 | { XFER_MW_DMA_4, 25, 0, 0, 0, 55, 20, 5, 80, 0 }, |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3066 | |
David Daney | 3ada9c1 | 2009-01-15 17:45:31 -0800 | [diff] [blame] | 3067 | /* { XFER_UDMA_SLOW, 0, 0, 0, 0, 0, 0, 0, 0, 150 }, */ |
| 3068 | { XFER_UDMA_0, 0, 0, 0, 0, 0, 0, 0, 0, 120 }, |
| 3069 | { XFER_UDMA_1, 0, 0, 0, 0, 0, 0, 0, 0, 80 }, |
| 3070 | { XFER_UDMA_2, 0, 0, 0, 0, 0, 0, 0, 0, 60 }, |
| 3071 | { XFER_UDMA_3, 0, 0, 0, 0, 0, 0, 0, 0, 45 }, |
| 3072 | { XFER_UDMA_4, 0, 0, 0, 0, 0, 0, 0, 0, 30 }, |
| 3073 | { XFER_UDMA_5, 0, 0, 0, 0, 0, 0, 0, 0, 20 }, |
| 3074 | { XFER_UDMA_6, 0, 0, 0, 0, 0, 0, 0, 0, 15 }, |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3075 | |
| 3076 | { 0xFF } |
| 3077 | }; |
| 3078 | |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3079 | #define ENOUGH(v, unit) (((v)-1)/(unit)+1) |
| 3080 | #define EZ(v, unit) ((v)?ENOUGH(v, unit):0) |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3081 | |
| 3082 | static void ata_timing_quantize(const struct ata_timing *t, struct ata_timing *q, int T, int UT) |
| 3083 | { |
David Daney | 3ada9c1 | 2009-01-15 17:45:31 -0800 | [diff] [blame] | 3084 | q->setup = EZ(t->setup * 1000, T); |
| 3085 | q->act8b = EZ(t->act8b * 1000, T); |
| 3086 | q->rec8b = EZ(t->rec8b * 1000, T); |
| 3087 | q->cyc8b = EZ(t->cyc8b * 1000, T); |
| 3088 | q->active = EZ(t->active * 1000, T); |
| 3089 | q->recover = EZ(t->recover * 1000, T); |
| 3090 | q->dmack_hold = EZ(t->dmack_hold * 1000, T); |
| 3091 | q->cycle = EZ(t->cycle * 1000, T); |
| 3092 | q->udma = EZ(t->udma * 1000, UT); |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3093 | } |
| 3094 | |
| 3095 | void ata_timing_merge(const struct ata_timing *a, const struct ata_timing *b, |
| 3096 | struct ata_timing *m, unsigned int what) |
| 3097 | { |
| 3098 | if (what & ATA_TIMING_SETUP ) m->setup = max(a->setup, b->setup); |
| 3099 | if (what & ATA_TIMING_ACT8B ) m->act8b = max(a->act8b, b->act8b); |
| 3100 | if (what & ATA_TIMING_REC8B ) m->rec8b = max(a->rec8b, b->rec8b); |
| 3101 | if (what & ATA_TIMING_CYC8B ) m->cyc8b = max(a->cyc8b, b->cyc8b); |
| 3102 | if (what & ATA_TIMING_ACTIVE ) m->active = max(a->active, b->active); |
| 3103 | if (what & ATA_TIMING_RECOVER) m->recover = max(a->recover, b->recover); |
David Daney | 3ada9c1 | 2009-01-15 17:45:31 -0800 | [diff] [blame] | 3104 | if (what & ATA_TIMING_DMACK_HOLD) m->dmack_hold = max(a->dmack_hold, b->dmack_hold); |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3105 | if (what & ATA_TIMING_CYCLE ) m->cycle = max(a->cycle, b->cycle); |
| 3106 | if (what & ATA_TIMING_UDMA ) m->udma = max(a->udma, b->udma); |
| 3107 | } |
| 3108 | |
Tejun Heo | 6357357 | 2007-11-27 19:43:39 +0900 | [diff] [blame] | 3109 | const struct ata_timing *ata_timing_find_mode(u8 xfer_mode) |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3110 | { |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 3111 | const struct ata_timing *t = ata_timing; |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3112 | |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 3113 | while (xfer_mode > t->mode) |
| 3114 | t++; |
| 3115 | |
| 3116 | if (xfer_mode == t->mode) |
| 3117 | return t; |
| 3118 | return NULL; |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3119 | } |
| 3120 | |
| 3121 | int ata_timing_compute(struct ata_device *adev, unsigned short speed, |
| 3122 | struct ata_timing *t, int T, int UT) |
| 3123 | { |
Bartlomiej Zolnierkiewicz | 9e8808a | 2010-01-18 18:13:57 +0100 | [diff] [blame] | 3124 | const u16 *id = adev->id; |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3125 | const struct ata_timing *s; |
| 3126 | struct ata_timing p; |
| 3127 | |
| 3128 | /* |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 3129 | * Find the mode. |
Albert Lee | 75b1f2f | 2005-11-16 17:06:18 +0800 | [diff] [blame] | 3130 | */ |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3131 | |
| 3132 | if (!(s = ata_timing_find_mode(speed))) |
| 3133 | return -EINVAL; |
| 3134 | |
Albert Lee | 75b1f2f | 2005-11-16 17:06:18 +0800 | [diff] [blame] | 3135 | memcpy(t, s, sizeof(*s)); |
| 3136 | |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3137 | /* |
| 3138 | * If the drive is an EIDE drive, it can tell us it needs extended |
| 3139 | * PIO/MW_DMA cycle timing. |
| 3140 | */ |
| 3141 | |
Bartlomiej Zolnierkiewicz | 9e8808a | 2010-01-18 18:13:57 +0100 | [diff] [blame] | 3142 | if (id[ATA_ID_FIELD_VALID] & 2) { /* EIDE drive */ |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3143 | memset(&p, 0, sizeof(p)); |
Bartlomiej Zolnierkiewicz | 9e8808a | 2010-01-18 18:13:57 +0100 | [diff] [blame] | 3144 | |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3145 | if (speed >= XFER_PIO_0 && speed <= XFER_SW_DMA_0) { |
Bartlomiej Zolnierkiewicz | 9e8808a | 2010-01-18 18:13:57 +0100 | [diff] [blame] | 3146 | if (speed <= XFER_PIO_2) |
| 3147 | p.cycle = p.cyc8b = id[ATA_ID_EIDE_PIO]; |
| 3148 | else if ((speed <= XFER_PIO_4) || |
| 3149 | (speed == XFER_PIO_5 && !ata_id_is_cfa(id))) |
| 3150 | p.cycle = p.cyc8b = id[ATA_ID_EIDE_PIO_IORDY]; |
| 3151 | } else if (speed >= XFER_MW_DMA_0 && speed <= XFER_MW_DMA_2) |
| 3152 | p.cycle = id[ATA_ID_EIDE_DMA_MIN]; |
| 3153 | |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3154 | ata_timing_merge(&p, t, t, ATA_TIMING_CYCLE | ATA_TIMING_CYC8B); |
| 3155 | } |
| 3156 | |
| 3157 | /* |
| 3158 | * Convert the timing to bus clock counts. |
| 3159 | */ |
| 3160 | |
Albert Lee | 75b1f2f | 2005-11-16 17:06:18 +0800 | [diff] [blame] | 3161 | ata_timing_quantize(t, t, T, UT); |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3162 | |
| 3163 | /* |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 3164 | * Even in DMA/UDMA modes we still use PIO access for IDENTIFY, |
| 3165 | * S.M.A.R.T * and some other commands. We have to ensure that the |
| 3166 | * DMA cycle timing is slower/equal than the fastest PIO timing. |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3167 | */ |
| 3168 | |
Alan | fd3367af | 2006-12-07 12:41:18 +0000 | [diff] [blame] | 3169 | if (speed > XFER_PIO_6) { |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3170 | ata_timing_compute(adev, adev->pio_mode, &p, T, UT); |
| 3171 | ata_timing_merge(&p, t, t, ATA_TIMING_ALL); |
| 3172 | } |
| 3173 | |
| 3174 | /* |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 3175 | * Lengthen active & recovery time so that cycle time is correct. |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3176 | */ |
| 3177 | |
| 3178 | if (t->act8b + t->rec8b < t->cyc8b) { |
| 3179 | t->act8b += (t->cyc8b - (t->act8b + t->rec8b)) / 2; |
| 3180 | t->rec8b = t->cyc8b - t->act8b; |
| 3181 | } |
| 3182 | |
| 3183 | if (t->active + t->recover < t->cycle) { |
| 3184 | t->active += (t->cycle - (t->active + t->recover)) / 2; |
| 3185 | t->recover = t->cycle - t->active; |
| 3186 | } |
Jeff Garzik | a617c09 | 2007-05-21 20:14:23 -0400 | [diff] [blame] | 3187 | |
Alan Cox | 4f701d1 | 2007-04-23 11:55:36 +0100 | [diff] [blame] | 3188 | /* In a few cases quantisation may produce enough errors to |
| 3189 | leave t->cycle too low for the sum of active and recovery |
| 3190 | if so we must correct this */ |
| 3191 | if (t->active + t->recover > t->cycle) |
| 3192 | t->cycle = t->active + t->recover; |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 3193 | |
| 3194 | return 0; |
| 3195 | } |
| 3196 | |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3197 | /** |
Tejun Heo | a0f79b9 | 2007-12-18 16:33:05 +0900 | [diff] [blame] | 3198 | * ata_timing_cycle2mode - find xfer mode for the specified cycle duration |
| 3199 | * @xfer_shift: ATA_SHIFT_* value for transfer type to examine. |
| 3200 | * @cycle: cycle duration in ns |
| 3201 | * |
| 3202 | * Return matching xfer mode for @cycle. The returned mode is of |
| 3203 | * the transfer type specified by @xfer_shift. If @cycle is too |
| 3204 | * slow for @xfer_shift, 0xff is returned. If @cycle is faster |
| 3205 | * than the fastest known mode, the fasted mode is returned. |
| 3206 | * |
| 3207 | * LOCKING: |
| 3208 | * None. |
| 3209 | * |
| 3210 | * RETURNS: |
| 3211 | * Matching xfer_mode, 0xff if no match found. |
| 3212 | */ |
| 3213 | u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle) |
| 3214 | { |
| 3215 | u8 base_mode = 0xff, last_mode = 0xff; |
| 3216 | const struct ata_xfer_ent *ent; |
| 3217 | const struct ata_timing *t; |
| 3218 | |
| 3219 | for (ent = ata_xfer_tbl; ent->shift >= 0; ent++) |
| 3220 | if (ent->shift == xfer_shift) |
| 3221 | base_mode = ent->base; |
| 3222 | |
| 3223 | for (t = ata_timing_find_mode(base_mode); |
| 3224 | t && ata_xfer_mode2shift(t->mode) == xfer_shift; t++) { |
| 3225 | unsigned short this_cycle; |
| 3226 | |
| 3227 | switch (xfer_shift) { |
| 3228 | case ATA_SHIFT_PIO: |
| 3229 | case ATA_SHIFT_MWDMA: |
| 3230 | this_cycle = t->cycle; |
| 3231 | break; |
| 3232 | case ATA_SHIFT_UDMA: |
| 3233 | this_cycle = t->udma; |
| 3234 | break; |
| 3235 | default: |
| 3236 | return 0xff; |
| 3237 | } |
| 3238 | |
| 3239 | if (cycle > this_cycle) |
| 3240 | break; |
| 3241 | |
| 3242 | last_mode = t->mode; |
| 3243 | } |
| 3244 | |
| 3245 | return last_mode; |
| 3246 | } |
| 3247 | |
| 3248 | /** |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3249 | * ata_down_xfermask_limit - adjust dev xfer masks downward |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3250 | * @dev: Device to adjust xfer masks |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3251 | * @sel: ATA_DNXFER_* selector |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3252 | * |
| 3253 | * Adjust xfer masks of @dev downward. Note that this function |
| 3254 | * does not apply the change. Invoking ata_set_mode() afterwards |
| 3255 | * will apply the limit. |
| 3256 | * |
| 3257 | * LOCKING: |
| 3258 | * Inherited from caller. |
| 3259 | * |
| 3260 | * RETURNS: |
| 3261 | * 0 on success, negative errno on failure |
| 3262 | */ |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3263 | int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel) |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3264 | { |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3265 | char buf[32]; |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 3266 | unsigned long orig_mask, xfer_mask; |
| 3267 | unsigned long pio_mask, mwdma_mask, udma_mask; |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3268 | int quiet, highbit; |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3269 | |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3270 | quiet = !!(sel & ATA_DNXFER_QUIET); |
| 3271 | sel &= ~ATA_DNXFER_QUIET; |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3272 | |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3273 | xfer_mask = orig_mask = ata_pack_xfermask(dev->pio_mask, |
| 3274 | dev->mwdma_mask, |
| 3275 | dev->udma_mask); |
| 3276 | ata_unpack_xfermask(xfer_mask, &pio_mask, &mwdma_mask, &udma_mask); |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3277 | |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3278 | switch (sel) { |
| 3279 | case ATA_DNXFER_PIO: |
| 3280 | highbit = fls(pio_mask) - 1; |
| 3281 | pio_mask &= ~(1 << highbit); |
| 3282 | break; |
| 3283 | |
| 3284 | case ATA_DNXFER_DMA: |
| 3285 | if (udma_mask) { |
| 3286 | highbit = fls(udma_mask) - 1; |
| 3287 | udma_mask &= ~(1 << highbit); |
| 3288 | if (!udma_mask) |
| 3289 | return -ENOENT; |
| 3290 | } else if (mwdma_mask) { |
| 3291 | highbit = fls(mwdma_mask) - 1; |
| 3292 | mwdma_mask &= ~(1 << highbit); |
| 3293 | if (!mwdma_mask) |
| 3294 | return -ENOENT; |
| 3295 | } |
| 3296 | break; |
| 3297 | |
| 3298 | case ATA_DNXFER_40C: |
| 3299 | udma_mask &= ATA_UDMA_MASK_40C; |
| 3300 | break; |
| 3301 | |
| 3302 | case ATA_DNXFER_FORCE_PIO0: |
| 3303 | pio_mask &= 1; |
| 3304 | case ATA_DNXFER_FORCE_PIO: |
| 3305 | mwdma_mask = 0; |
| 3306 | udma_mask = 0; |
| 3307 | break; |
| 3308 | |
Tejun Heo | 458337d | 2007-02-02 16:22:30 +0900 | [diff] [blame] | 3309 | default: |
| 3310 | BUG(); |
| 3311 | } |
| 3312 | |
| 3313 | xfer_mask &= ata_pack_xfermask(pio_mask, mwdma_mask, udma_mask); |
| 3314 | |
| 3315 | if (!(xfer_mask & ATA_MASK_PIO) || xfer_mask == orig_mask) |
| 3316 | return -ENOENT; |
| 3317 | |
| 3318 | if (!quiet) { |
| 3319 | if (xfer_mask & (ATA_MASK_MWDMA | ATA_MASK_UDMA)) |
| 3320 | snprintf(buf, sizeof(buf), "%s:%s", |
| 3321 | ata_mode_string(xfer_mask), |
| 3322 | ata_mode_string(xfer_mask & ATA_MASK_PIO)); |
| 3323 | else |
| 3324 | snprintf(buf, sizeof(buf), "%s", |
| 3325 | ata_mode_string(xfer_mask)); |
| 3326 | |
| 3327 | ata_dev_printk(dev, KERN_WARNING, |
| 3328 | "limiting speed to %s\n", buf); |
| 3329 | } |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3330 | |
| 3331 | ata_unpack_xfermask(xfer_mask, &dev->pio_mask, &dev->mwdma_mask, |
| 3332 | &dev->udma_mask); |
| 3333 | |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3334 | return 0; |
Tejun Heo | cf176e1 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 3335 | } |
| 3336 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 3337 | static int ata_dev_set_mode(struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3338 | { |
Tejun Heo | d0cb43b | 2009-07-09 09:27:50 +0900 | [diff] [blame] | 3339 | struct ata_port *ap = dev->link->ap; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 3340 | struct ata_eh_context *ehc = &dev->link->eh_context; |
Tejun Heo | d0cb43b | 2009-07-09 09:27:50 +0900 | [diff] [blame] | 3341 | const bool nosetxfer = dev->horkage & ATA_HORKAGE_NOSETXFER; |
Tejun Heo | 4055dee | 2008-02-07 10:34:08 +0900 | [diff] [blame] | 3342 | const char *dev_err_whine = ""; |
| 3343 | int ign_dev_err = 0; |
Tejun Heo | d0cb43b | 2009-07-09 09:27:50 +0900 | [diff] [blame] | 3344 | unsigned int err_mask = 0; |
Tejun Heo | 83206a2 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 3345 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3346 | |
Tejun Heo | e838460 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 3347 | dev->flags &= ~ATA_DFLAG_PIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3348 | if (dev->xfer_shift == ATA_SHIFT_PIO) |
| 3349 | dev->flags |= ATA_DFLAG_PIO; |
| 3350 | |
Tejun Heo | d0cb43b | 2009-07-09 09:27:50 +0900 | [diff] [blame] | 3351 | if (nosetxfer && ap->flags & ATA_FLAG_SATA && ata_id_is_sata(dev->id)) |
| 3352 | dev_err_whine = " (SET_XFERMODE skipped)"; |
| 3353 | else { |
| 3354 | if (nosetxfer) |
| 3355 | ata_dev_printk(dev, KERN_WARNING, |
| 3356 | "NOSETXFER but PATA detected - can't " |
| 3357 | "skip SETXFER, might malfunction\n"); |
| 3358 | err_mask = ata_dev_set_xfermode(dev); |
| 3359 | } |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3360 | |
Tejun Heo | 4055dee | 2008-02-07 10:34:08 +0900 | [diff] [blame] | 3361 | if (err_mask & ~AC_ERR_DEV) |
| 3362 | goto fail; |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3363 | |
Tejun Heo | 4055dee | 2008-02-07 10:34:08 +0900 | [diff] [blame] | 3364 | /* revalidate */ |
Tejun Heo | baa1e78 | 2006-11-01 18:39:27 +0900 | [diff] [blame] | 3365 | ehc->i.flags |= ATA_EHI_POST_SETMODE; |
Tejun Heo | 422c9da | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 3366 | rc = ata_dev_revalidate(dev, ATA_DEV_UNKNOWN, 0); |
Tejun Heo | baa1e78 | 2006-11-01 18:39:27 +0900 | [diff] [blame] | 3367 | ehc->i.flags &= ~ATA_EHI_POST_SETMODE; |
Tejun Heo | 5eb45c0 | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 3368 | if (rc) |
Tejun Heo | 83206a2 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 3369 | return rc; |
Tejun Heo | 48a8a14 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3370 | |
Alan Cox | b93fda1 | 2008-04-08 16:36:44 +0100 | [diff] [blame] | 3371 | if (dev->xfer_shift == ATA_SHIFT_PIO) { |
| 3372 | /* Old CFA may refuse this command, which is just fine */ |
| 3373 | if (ata_id_is_cfa(dev->id)) |
| 3374 | ign_dev_err = 1; |
| 3375 | /* Catch several broken garbage emulations plus some pre |
| 3376 | ATA devices */ |
| 3377 | if (ata_id_major_version(dev->id) == 0 && |
| 3378 | dev->pio_mode <= XFER_PIO_2) |
| 3379 | ign_dev_err = 1; |
| 3380 | /* Some very old devices and some bad newer ones fail |
| 3381 | any kind of SET_XFERMODE request but support PIO0-2 |
| 3382 | timings and no IORDY */ |
| 3383 | if (!ata_id_has_iordy(dev->id) && dev->pio_mode <= XFER_PIO_2) |
| 3384 | ign_dev_err = 1; |
| 3385 | } |
Tejun Heo | 4055dee | 2008-02-07 10:34:08 +0900 | [diff] [blame] | 3386 | /* Early MWDMA devices do DMA but don't allow DMA mode setting. |
| 3387 | Don't fail an MWDMA0 set IFF the device indicates it is in MWDMA0 */ |
| 3388 | if (dev->xfer_shift == ATA_SHIFT_MWDMA && |
| 3389 | dev->dma_mode == XFER_MW_DMA_0 && |
| 3390 | (dev->id[63] >> 8) & 1) |
| 3391 | ign_dev_err = 1; |
| 3392 | |
| 3393 | /* if the device is actually configured correctly, ignore dev err */ |
| 3394 | if (dev->xfer_mode == ata_xfer_mask2mode(ata_id_xfermask(dev->id))) |
| 3395 | ign_dev_err = 1; |
| 3396 | |
| 3397 | if (err_mask & AC_ERR_DEV) { |
| 3398 | if (!ign_dev_err) |
| 3399 | goto fail; |
| 3400 | else |
| 3401 | dev_err_whine = " (device error ignored)"; |
| 3402 | } |
| 3403 | |
Tejun Heo | 23e71c3 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 3404 | DPRINTK("xfer_shift=%u, xfer_mode=0x%x\n", |
| 3405 | dev->xfer_shift, (int)dev->xfer_mode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3406 | |
Tejun Heo | 4055dee | 2008-02-07 10:34:08 +0900 | [diff] [blame] | 3407 | ata_dev_printk(dev, KERN_INFO, "configured for %s%s\n", |
| 3408 | ata_mode_string(ata_xfer_mode2mask(dev->xfer_mode)), |
| 3409 | dev_err_whine); |
| 3410 | |
Tejun Heo | 83206a2 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 3411 | return 0; |
Tejun Heo | 4055dee | 2008-02-07 10:34:08 +0900 | [diff] [blame] | 3412 | |
| 3413 | fail: |
| 3414 | ata_dev_printk(dev, KERN_ERR, "failed to set xfermode " |
| 3415 | "(err_mask=0x%x)\n", err_mask); |
| 3416 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3417 | } |
| 3418 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3419 | /** |
Alan | 0435182 | 2007-03-06 02:37:52 -0800 | [diff] [blame] | 3420 | * ata_do_set_mode - Program timings and issue SET FEATURES - XFER |
Tejun Heo | 0260731 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3421 | * @link: link on which timings will be programmed |
Joe Perches | 1967b7f | 2008-02-03 17:08:11 +0200 | [diff] [blame] | 3422 | * @r_failed_dev: out parameter for failed device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3423 | * |
Alan | 0435182 | 2007-03-06 02:37:52 -0800 | [diff] [blame] | 3424 | * Standard implementation of the function used to tune and set |
| 3425 | * ATA device disk transfer mode (PIO3, UDMA6, etc.). If |
| 3426 | * ata_dev_set_mode() fails, pointer to the failing device is |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3427 | * returned in @r_failed_dev. |
Jeff Garzik | 780a87f | 2005-05-30 15:41:05 -0400 | [diff] [blame] | 3428 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3429 | * LOCKING: |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 3430 | * PCI/etc. bus probe sem. |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3431 | * |
| 3432 | * RETURNS: |
| 3433 | * 0 on success, negative errno otherwise |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3434 | */ |
Alan | 0435182 | 2007-03-06 02:37:52 -0800 | [diff] [blame] | 3435 | |
Tejun Heo | 0260731 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3436 | 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] | 3437 | { |
Tejun Heo | 0260731 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3438 | struct ata_port *ap = link->ap; |
Tejun Heo | e8e0619 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3439 | struct ata_device *dev; |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3440 | int rc = 0, used_dma = 0, found = 0; |
Tejun Heo | 3adcebb | 2006-05-15 20:57:37 +0900 | [diff] [blame] | 3441 | |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 3442 | /* step 1: calculate xfer_mask */ |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 3443 | ata_for_each_dev(dev, link, ENABLED) { |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 3444 | unsigned long pio_mask, dma_mask; |
Alan Cox | b3a7060 | 2007-10-02 12:38:26 -0400 | [diff] [blame] | 3445 | unsigned int mode_mask; |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 3446 | |
Alan Cox | b3a7060 | 2007-10-02 12:38:26 -0400 | [diff] [blame] | 3447 | mode_mask = ATA_DMA_MASK_ATA; |
| 3448 | if (dev->class == ATA_DEV_ATAPI) |
| 3449 | mode_mask = ATA_DMA_MASK_ATAPI; |
| 3450 | else if (ata_id_is_cfa(dev->id)) |
| 3451 | mode_mask = ATA_DMA_MASK_CFA; |
| 3452 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 3453 | ata_dev_xfermask(dev); |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 3454 | ata_force_xfermask(dev); |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 3455 | |
Tejun Heo | acf356b | 2006-03-24 14:07:50 +0900 | [diff] [blame] | 3456 | pio_mask = ata_pack_xfermask(dev->pio_mask, 0, 0); |
| 3457 | dma_mask = ata_pack_xfermask(0, dev->mwdma_mask, dev->udma_mask); |
Alan Cox | b3a7060 | 2007-10-02 12:38:26 -0400 | [diff] [blame] | 3458 | |
| 3459 | if (libata_dma_mask & mode_mask) |
| 3460 | dma_mask = ata_pack_xfermask(0, dev->mwdma_mask, dev->udma_mask); |
| 3461 | else |
| 3462 | dma_mask = 0; |
| 3463 | |
Tejun Heo | acf356b | 2006-03-24 14:07:50 +0900 | [diff] [blame] | 3464 | dev->pio_mode = ata_xfer_mask2mode(pio_mask); |
| 3465 | dev->dma_mode = ata_xfer_mask2mode(dma_mask); |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 3466 | |
Tejun Heo | 4f65977 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3467 | found = 1; |
Alan Cox | b15b3eb | 2008-08-01 09:18:34 +0100 | [diff] [blame] | 3468 | if (ata_dma_enabled(dev)) |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 3469 | used_dma = 1; |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 3470 | } |
Tejun Heo | 4f65977 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3471 | if (!found) |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3472 | goto out; |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 3473 | |
| 3474 | /* step 2: always set host PIO timings */ |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 3475 | ata_for_each_dev(dev, link, ENABLED) { |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 3476 | if (dev->pio_mode == 0xff) { |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 3477 | ata_dev_printk(dev, KERN_WARNING, "no PIO support\n"); |
Tejun Heo | e8e0619 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3478 | rc = -EINVAL; |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3479 | goto out; |
Tejun Heo | e8e0619 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3480 | } |
| 3481 | |
| 3482 | dev->xfer_mode = dev->pio_mode; |
| 3483 | dev->xfer_shift = ATA_SHIFT_PIO; |
| 3484 | if (ap->ops->set_piomode) |
| 3485 | ap->ops->set_piomode(ap, dev); |
| 3486 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3487 | |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 3488 | /* step 3: set host DMA timings */ |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 3489 | ata_for_each_dev(dev, link, ENABLED) { |
| 3490 | if (!ata_dma_enabled(dev)) |
Tejun Heo | e8e0619 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3491 | continue; |
| 3492 | |
| 3493 | dev->xfer_mode = dev->dma_mode; |
| 3494 | dev->xfer_shift = ata_xfer_mode2shift(dev->dma_mode); |
| 3495 | if (ap->ops->set_dmamode) |
| 3496 | ap->ops->set_dmamode(ap, dev); |
| 3497 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3498 | |
| 3499 | /* step 4: update devices' xfer mode */ |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 3500 | ata_for_each_dev(dev, link, ENABLED) { |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 3501 | rc = ata_dev_set_mode(dev); |
Tejun Heo | 5bbc53f | 2006-04-01 01:38:17 +0900 | [diff] [blame] | 3502 | if (rc) |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3503 | goto out; |
Tejun Heo | 83206a2 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 3504 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3505 | |
Tejun Heo | e8e0619 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3506 | /* Record simplex status. If we selected DMA then the other |
| 3507 | * host channels are not permitted to do so. |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 3508 | */ |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 3509 | if (used_dma && (ap->host->flags & ATA_HOST_SIMPLEX)) |
Alan | 032af1c | 2007-03-01 17:36:46 +0000 | [diff] [blame] | 3510 | ap->host->simplex_claimed = ap; |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 3511 | |
Tejun Heo | e82cbdb | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3512 | out: |
| 3513 | if (rc) |
| 3514 | *r_failed_dev = dev; |
| 3515 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3516 | } |
| 3517 | |
| 3518 | /** |
Tejun Heo | aa2731a | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3519 | * ata_wait_ready - wait for link to become ready |
| 3520 | * @link: link to be waited on |
| 3521 | * @deadline: deadline jiffies for the operation |
| 3522 | * @check_ready: callback to check link readiness |
| 3523 | * |
| 3524 | * Wait for @link to become ready. @check_ready should return |
| 3525 | * positive number if @link is ready, 0 if it isn't, -ENODEV if |
| 3526 | * link doesn't seem to be occupied, other errno for other error |
| 3527 | * conditions. |
| 3528 | * |
| 3529 | * Transient -ENODEV conditions are allowed for |
| 3530 | * ATA_TMOUT_FF_WAIT. |
| 3531 | * |
| 3532 | * LOCKING: |
| 3533 | * EH context. |
| 3534 | * |
| 3535 | * RETURNS: |
| 3536 | * 0 if @linke is ready before @deadline; otherwise, -errno. |
| 3537 | */ |
| 3538 | int ata_wait_ready(struct ata_link *link, unsigned long deadline, |
| 3539 | int (*check_ready)(struct ata_link *link)) |
| 3540 | { |
| 3541 | unsigned long start = jiffies; |
Tejun Heo | b48d58f | 2010-04-09 19:46:38 +0900 | [diff] [blame] | 3542 | unsigned long nodev_deadline; |
Tejun Heo | aa2731a | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3543 | int warned = 0; |
| 3544 | |
Tejun Heo | b48d58f | 2010-04-09 19:46:38 +0900 | [diff] [blame] | 3545 | /* choose which 0xff timeout to use, read comment in libata.h */ |
| 3546 | if (link->ap->host->flags & ATA_HOST_PARALLEL_SCAN) |
| 3547 | nodev_deadline = ata_deadline(start, ATA_TMOUT_FF_WAIT_LONG); |
| 3548 | else |
| 3549 | nodev_deadline = ata_deadline(start, ATA_TMOUT_FF_WAIT); |
| 3550 | |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 3551 | /* Slave readiness can't be tested separately from master. On |
| 3552 | * M/S emulation configuration, this function should be called |
| 3553 | * only on the master and it will handle both master and slave. |
| 3554 | */ |
| 3555 | WARN_ON(link == link->ap->slave_link); |
| 3556 | |
Tejun Heo | aa2731a | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3557 | if (time_after(nodev_deadline, deadline)) |
| 3558 | nodev_deadline = deadline; |
| 3559 | |
| 3560 | while (1) { |
| 3561 | unsigned long now = jiffies; |
| 3562 | int ready, tmp; |
| 3563 | |
| 3564 | ready = tmp = check_ready(link); |
| 3565 | if (ready > 0) |
| 3566 | return 0; |
| 3567 | |
Tejun Heo | b48d58f | 2010-04-09 19:46:38 +0900 | [diff] [blame] | 3568 | /* |
| 3569 | * -ENODEV could be transient. Ignore -ENODEV if link |
Tejun Heo | aa2731a | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3570 | * is online. Also, some SATA devices take a long |
Tejun Heo | b48d58f | 2010-04-09 19:46:38 +0900 | [diff] [blame] | 3571 | * time to clear 0xff after reset. Wait for |
| 3572 | * ATA_TMOUT_FF_WAIT[_LONG] on -ENODEV if link isn't |
| 3573 | * offline. |
Tejun Heo | aa2731a | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3574 | * |
| 3575 | * Note that some PATA controllers (pata_ali) explode |
| 3576 | * if status register is read more than once when |
| 3577 | * there's no device attached. |
| 3578 | */ |
| 3579 | if (ready == -ENODEV) { |
| 3580 | if (ata_link_online(link)) |
| 3581 | ready = 0; |
| 3582 | else if ((link->ap->flags & ATA_FLAG_SATA) && |
| 3583 | !ata_link_offline(link) && |
| 3584 | time_before(now, nodev_deadline)) |
| 3585 | ready = 0; |
| 3586 | } |
| 3587 | |
| 3588 | if (ready) |
| 3589 | return ready; |
| 3590 | if (time_after(now, deadline)) |
| 3591 | return -EBUSY; |
| 3592 | |
| 3593 | if (!warned && time_after(now, start + 5 * HZ) && |
| 3594 | (deadline - now > 3 * HZ)) { |
| 3595 | ata_link_printk(link, KERN_WARNING, |
| 3596 | "link is slow to respond, please be patient " |
| 3597 | "(ready=%d)\n", tmp); |
| 3598 | warned = 1; |
| 3599 | } |
| 3600 | |
| 3601 | msleep(50); |
| 3602 | } |
| 3603 | } |
| 3604 | |
| 3605 | /** |
| 3606 | * ata_wait_after_reset - wait for link to become ready after reset |
| 3607 | * @link: link to be waited on |
| 3608 | * @deadline: deadline jiffies for the operation |
| 3609 | * @check_ready: callback to check link readiness |
| 3610 | * |
| 3611 | * Wait for @link to become ready after reset. |
| 3612 | * |
| 3613 | * LOCKING: |
| 3614 | * EH context. |
| 3615 | * |
| 3616 | * RETURNS: |
| 3617 | * 0 if @linke is ready before @deadline; otherwise, -errno. |
| 3618 | */ |
Harvey Harrison | 2b4221b | 2008-04-24 18:37:34 -0700 | [diff] [blame] | 3619 | int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, |
Tejun Heo | aa2731a | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3620 | int (*check_ready)(struct ata_link *link)) |
| 3621 | { |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 3622 | msleep(ATA_WAIT_AFTER_RESET); |
Tejun Heo | aa2731a | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3623 | |
| 3624 | return ata_wait_ready(link, deadline, check_ready); |
| 3625 | } |
| 3626 | |
| 3627 | /** |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3628 | * sata_link_debounce - debounce SATA phy status |
| 3629 | * @link: ATA link to debounce SATA phy status for |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3630 | * @params: timing parameters { interval, duratinon, timeout } in msec |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3631 | * @deadline: deadline jiffies for the operation |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3632 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3633 | * Make sure SStatus of @link reaches stable state, determined by |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3634 | * holding the same value where DET is not 1 for @duration polled |
| 3635 | * every @interval, before @timeout. Timeout constraints the |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3636 | * beginning of the stable state. Because DET gets stuck at 1 on |
| 3637 | * some controllers after hot unplugging, this functions waits |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3638 | * until timeout then returns 0 if DET is stable at 1. |
| 3639 | * |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3640 | * @timeout is further limited by @deadline. The sooner of the |
| 3641 | * two is used. |
| 3642 | * |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3643 | * LOCKING: |
| 3644 | * Kernel thread context (may sleep) |
| 3645 | * |
| 3646 | * RETURNS: |
| 3647 | * 0 on success, -errno on failure. |
| 3648 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3649 | int sata_link_debounce(struct ata_link *link, const unsigned long *params, |
| 3650 | unsigned long deadline) |
Tejun Heo | 7a7921e | 2006-02-02 18:20:00 +0900 | [diff] [blame] | 3651 | { |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 3652 | unsigned long interval = params[0]; |
| 3653 | unsigned long duration = params[1]; |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3654 | unsigned long last_jiffies, t; |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3655 | u32 last, cur; |
| 3656 | int rc; |
| 3657 | |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 3658 | t = ata_deadline(jiffies, params[2]); |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3659 | if (time_before(t, deadline)) |
| 3660 | deadline = t; |
| 3661 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3662 | if ((rc = sata_scr_read(link, SCR_STATUS, &cur))) |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3663 | return rc; |
| 3664 | cur &= 0xf; |
| 3665 | |
| 3666 | last = cur; |
| 3667 | last_jiffies = jiffies; |
| 3668 | |
| 3669 | while (1) { |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 3670 | msleep(interval); |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3671 | if ((rc = sata_scr_read(link, SCR_STATUS, &cur))) |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3672 | return rc; |
| 3673 | cur &= 0xf; |
| 3674 | |
| 3675 | /* DET stable? */ |
| 3676 | if (cur == last) { |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3677 | if (cur == 1 && time_before(jiffies, deadline)) |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3678 | continue; |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 3679 | if (time_after(jiffies, |
| 3680 | ata_deadline(last_jiffies, duration))) |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3681 | return 0; |
| 3682 | continue; |
| 3683 | } |
| 3684 | |
| 3685 | /* unstable, start over */ |
| 3686 | last = cur; |
| 3687 | last_jiffies = jiffies; |
| 3688 | |
Tejun Heo | f154515 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3689 | /* Check deadline. If debouncing failed, return |
| 3690 | * -EPIPE to tell upper layer to lower link speed. |
| 3691 | */ |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3692 | if (time_after(jiffies, deadline)) |
Tejun Heo | f154515 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3693 | return -EPIPE; |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3694 | } |
| 3695 | } |
| 3696 | |
| 3697 | /** |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3698 | * sata_link_resume - resume SATA link |
| 3699 | * @link: ATA link to resume SATA |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3700 | * @params: timing parameters { interval, duratinon, timeout } in msec |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3701 | * @deadline: deadline jiffies for the operation |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3702 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3703 | * Resume SATA phy @link and debounce it. |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3704 | * |
| 3705 | * LOCKING: |
| 3706 | * Kernel thread context (may sleep) |
| 3707 | * |
| 3708 | * RETURNS: |
| 3709 | * 0 on success, -errno on failure. |
| 3710 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3711 | int sata_link_resume(struct ata_link *link, const unsigned long *params, |
| 3712 | unsigned long deadline) |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3713 | { |
Tejun Heo | 5040ab6 | 2010-01-11 11:14:44 +0900 | [diff] [blame] | 3714 | int tries = ATA_LINK_RESUME_TRIES; |
Tejun Heo | ac37198 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3715 | u32 scontrol, serror; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3716 | int rc; |
Tejun Heo | 7a7921e | 2006-02-02 18:20:00 +0900 | [diff] [blame] | 3717 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3718 | if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol))) |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3719 | return rc; |
| 3720 | |
Tejun Heo | 5040ab6 | 2010-01-11 11:14:44 +0900 | [diff] [blame] | 3721 | /* |
| 3722 | * Writes to SControl sometimes get ignored under certain |
| 3723 | * controllers (ata_piix SIDPR). Make sure DET actually is |
| 3724 | * cleared. |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 3725 | */ |
Tejun Heo | 5040ab6 | 2010-01-11 11:14:44 +0900 | [diff] [blame] | 3726 | do { |
| 3727 | scontrol = (scontrol & 0x0f0) | 0x300; |
| 3728 | if ((rc = sata_scr_write(link, SCR_CONTROL, scontrol))) |
| 3729 | return rc; |
| 3730 | /* |
| 3731 | * Some PHYs react badly if SStatus is pounded |
| 3732 | * immediately after resuming. Delay 200ms before |
| 3733 | * debouncing. |
| 3734 | */ |
| 3735 | msleep(200); |
| 3736 | |
| 3737 | /* is SControl restored correctly? */ |
| 3738 | if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol))) |
| 3739 | return rc; |
| 3740 | } while ((scontrol & 0xf0f) != 0x300 && --tries); |
| 3741 | |
| 3742 | if ((scontrol & 0xf0f) != 0x300) { |
| 3743 | ata_link_printk(link, KERN_ERR, |
| 3744 | "failed to resume link (SControl %X)\n", |
| 3745 | scontrol); |
| 3746 | return 0; |
| 3747 | } |
| 3748 | |
| 3749 | if (tries < ATA_LINK_RESUME_TRIES) |
| 3750 | ata_link_printk(link, KERN_WARNING, |
| 3751 | "link resume succeeded after %d retries\n", |
| 3752 | ATA_LINK_RESUME_TRIES - tries); |
Tejun Heo | 7a7921e | 2006-02-02 18:20:00 +0900 | [diff] [blame] | 3753 | |
Tejun Heo | ac37198 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3754 | if ((rc = sata_link_debounce(link, params, deadline))) |
| 3755 | return rc; |
| 3756 | |
Tejun Heo | f046519 | 2008-05-19 01:15:08 +0900 | [diff] [blame] | 3757 | /* clear SError, some PHYs require this even for SRST to work */ |
Tejun Heo | ac37198 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3758 | if (!(rc = sata_scr_read(link, SCR_ERROR, &serror))) |
| 3759 | rc = sata_scr_write(link, SCR_ERROR, serror); |
Tejun Heo | ac37198 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3760 | |
Tejun Heo | f046519 | 2008-05-19 01:15:08 +0900 | [diff] [blame] | 3761 | return rc != -EINVAL ? rc : 0; |
Tejun Heo | 7a7921e | 2006-02-02 18:20:00 +0900 | [diff] [blame] | 3762 | } |
| 3763 | |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3764 | /** |
Tejun Heo | 0aa1113 | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 3765 | * ata_std_prereset - prepare for reset |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3766 | * @link: ATA link to be reset |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3767 | * @deadline: deadline jiffies for the operation |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3768 | * |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3769 | * @link is about to be reset. Initialize it. Failure from |
Tejun Heo | b8cffc6 | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3770 | * prereset makes libata abort whole reset sequence and give up |
| 3771 | * that port, so prereset should be best-effort. It does its |
| 3772 | * best to prepare for reset sequence but if things go wrong, it |
| 3773 | * should just whine, not fail. |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3774 | * |
| 3775 | * LOCKING: |
| 3776 | * Kernel thread context (may sleep) |
| 3777 | * |
| 3778 | * RETURNS: |
| 3779 | * 0 on success, -errno otherwise. |
| 3780 | */ |
Tejun Heo | 0aa1113 | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 3781 | int ata_std_prereset(struct ata_link *link, unsigned long deadline) |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3782 | { |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3783 | struct ata_port *ap = link->ap; |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3784 | struct ata_eh_context *ehc = &link->eh_context; |
Tejun Heo | e9c8391 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 3785 | const unsigned long *timing = sata_ehc_deb_timing(ehc); |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3786 | int rc; |
| 3787 | |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3788 | /* if we're about to do hardreset, nothing more to do */ |
| 3789 | if (ehc->i.action & ATA_EH_HARDRESET) |
| 3790 | return 0; |
| 3791 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3792 | /* if SATA, resume link */ |
Tejun Heo | a16abc0 | 2007-05-21 18:33:47 +0200 | [diff] [blame] | 3793 | if (ap->flags & ATA_FLAG_SATA) { |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3794 | rc = sata_link_resume(link, timing, deadline); |
Tejun Heo | b8cffc6 | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3795 | /* whine about phy resume failure but proceed */ |
| 3796 | if (rc && rc != -EOPNOTSUPP) |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3797 | ata_link_printk(link, KERN_WARNING, "failed to resume " |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3798 | "link for reset (errno=%d)\n", rc); |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3799 | } |
| 3800 | |
Tejun Heo | 45db2f6 | 2008-04-08 01:46:56 +0900 | [diff] [blame] | 3801 | /* no point in trying softreset on offline link */ |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 3802 | if (ata_phys_link_offline(link)) |
Tejun Heo | 45db2f6 | 2008-04-08 01:46:56 +0900 | [diff] [blame] | 3803 | ehc->i.action &= ~ATA_EH_SOFTRESET; |
| 3804 | |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 3805 | return 0; |
| 3806 | } |
| 3807 | |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3808 | /** |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3809 | * sata_link_hardreset - reset link via SATA phy reset |
| 3810 | * @link: link to reset |
Tejun Heo | b6103f6 | 2006-11-01 17:59:53 +0900 | [diff] [blame] | 3811 | * @timing: timing parameters { interval, duratinon, timeout } in msec |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 3812 | * @deadline: deadline jiffies for the operation |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3813 | * @online: optional out parameter indicating link onlineness |
| 3814 | * @check_ready: optional callback to check link readiness |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3815 | * |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3816 | * SATA phy-reset @link using DET bits of SControl register. |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3817 | * After hardreset, link readiness is waited upon using |
| 3818 | * ata_wait_ready() if @check_ready is specified. LLDs are |
| 3819 | * allowed to not specify @check_ready and wait itself after this |
| 3820 | * function returns. Device classification is LLD's |
| 3821 | * responsibility. |
| 3822 | * |
| 3823 | * *@online is set to one iff reset succeeded and @link is online |
| 3824 | * after reset. |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3825 | * |
| 3826 | * LOCKING: |
| 3827 | * Kernel thread context (may sleep) |
| 3828 | * |
| 3829 | * RETURNS: |
| 3830 | * 0 on success, -errno otherwise. |
| 3831 | */ |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3832 | int sata_link_hardreset(struct ata_link *link, const unsigned long *timing, |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3833 | unsigned long deadline, |
| 3834 | bool *online, int (*check_ready)(struct ata_link *)) |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3835 | { |
Tejun Heo | 852ee16 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3836 | u32 scontrol; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3837 | int rc; |
Tejun Heo | 852ee16 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3838 | |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3839 | DPRINTK("ENTER\n"); |
| 3840 | |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3841 | if (online) |
| 3842 | *online = false; |
| 3843 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3844 | if (sata_set_spd_needed(link)) { |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 3845 | /* SATA spec says nothing about how to reconfigure |
| 3846 | * spd. To be on the safe side, turn off phy during |
| 3847 | * reconfiguration. This works for at least ICH7 AHCI |
| 3848 | * and Sil3124. |
| 3849 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3850 | if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol))) |
Tejun Heo | b6103f6 | 2006-11-01 17:59:53 +0900 | [diff] [blame] | 3851 | goto out; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3852 | |
Martin Hicks | a34b6fc | 2006-07-05 15:06:13 -0400 | [diff] [blame] | 3853 | scontrol = (scontrol & 0x0f0) | 0x304; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3854 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3855 | if ((rc = sata_scr_write(link, SCR_CONTROL, scontrol))) |
Tejun Heo | b6103f6 | 2006-11-01 17:59:53 +0900 | [diff] [blame] | 3856 | goto out; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 3857 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3858 | sata_set_spd(link); |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 3859 | } |
| 3860 | |
| 3861 | /* issue phy wake/reset */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3862 | if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol))) |
Tejun Heo | b6103f6 | 2006-11-01 17:59:53 +0900 | [diff] [blame] | 3863 | goto out; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3864 | |
Tejun Heo | 852ee16 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 3865 | scontrol = (scontrol & 0x0f0) | 0x301; |
Tejun Heo | 81952c5 | 2006-05-15 20:57:47 +0900 | [diff] [blame] | 3866 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3867 | if ((rc = sata_scr_write_flush(link, SCR_CONTROL, scontrol))) |
Tejun Heo | b6103f6 | 2006-11-01 17:59:53 +0900 | [diff] [blame] | 3868 | goto out; |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3869 | |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 3870 | /* 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] | 3871 | * 10.4.2 says at least 1 ms. |
| 3872 | */ |
| 3873 | msleep(1); |
| 3874 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3875 | /* bring link back */ |
| 3876 | rc = sata_link_resume(link, timing, deadline); |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3877 | if (rc) |
| 3878 | goto out; |
| 3879 | /* if link is offline nothing more to do */ |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 3880 | if (ata_phys_link_offline(link)) |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3881 | goto out; |
| 3882 | |
| 3883 | /* Link is online. From this point, -ENODEV too is an error. */ |
| 3884 | if (online) |
| 3885 | *online = true; |
| 3886 | |
Tejun Heo | 071f44b | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 3887 | if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) { |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3888 | /* If PMP is supported, we have to do follow-up SRST. |
| 3889 | * Some PMPs don't send D2H Reg FIS after hardreset if |
| 3890 | * the first port is empty. Wait only for |
| 3891 | * ATA_TMOUT_PMP_SRST_WAIT. |
| 3892 | */ |
| 3893 | if (check_ready) { |
| 3894 | unsigned long pmp_deadline; |
| 3895 | |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 3896 | pmp_deadline = ata_deadline(jiffies, |
| 3897 | ATA_TMOUT_PMP_SRST_WAIT); |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3898 | if (time_after(pmp_deadline, deadline)) |
| 3899 | pmp_deadline = deadline; |
| 3900 | ata_wait_ready(link, pmp_deadline, check_ready); |
| 3901 | } |
| 3902 | rc = -EAGAIN; |
| 3903 | goto out; |
| 3904 | } |
| 3905 | |
| 3906 | rc = 0; |
| 3907 | if (check_ready) |
| 3908 | rc = ata_wait_ready(link, deadline, check_ready); |
Tejun Heo | b6103f6 | 2006-11-01 17:59:53 +0900 | [diff] [blame] | 3909 | out: |
Tejun Heo | 0cbf071 | 2008-05-19 01:15:05 +0900 | [diff] [blame] | 3910 | if (rc && rc != -EAGAIN) { |
| 3911 | /* online is set iff link is online && reset succeeded */ |
| 3912 | if (online) |
| 3913 | *online = false; |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3914 | ata_link_printk(link, KERN_ERR, |
| 3915 | "COMRESET failed (errno=%d)\n", rc); |
Tejun Heo | 0cbf071 | 2008-05-19 01:15:05 +0900 | [diff] [blame] | 3916 | } |
Tejun Heo | b6103f6 | 2006-11-01 17:59:53 +0900 | [diff] [blame] | 3917 | DPRINTK("EXIT, rc=%d\n", rc); |
| 3918 | return rc; |
| 3919 | } |
| 3920 | |
| 3921 | /** |
Tejun Heo | 57c9efd | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3922 | * sata_std_hardreset - COMRESET w/o waiting or classification |
| 3923 | * @link: link to reset |
| 3924 | * @class: resulting class of attached device |
| 3925 | * @deadline: deadline jiffies for the operation |
| 3926 | * |
| 3927 | * Standard SATA COMRESET w/o waiting or classification. |
| 3928 | * |
| 3929 | * LOCKING: |
| 3930 | * Kernel thread context (may sleep) |
| 3931 | * |
| 3932 | * RETURNS: |
| 3933 | * 0 if link offline, -EAGAIN if link online, -errno on errors. |
| 3934 | */ |
| 3935 | int sata_std_hardreset(struct ata_link *link, unsigned int *class, |
| 3936 | unsigned long deadline) |
| 3937 | { |
| 3938 | const unsigned long *timing = sata_ehc_deb_timing(&link->eh_context); |
| 3939 | bool online; |
| 3940 | int rc; |
| 3941 | |
| 3942 | /* do hardreset */ |
| 3943 | rc = sata_link_hardreset(link, timing, deadline, &online, NULL); |
Tejun Heo | 57c9efd | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 3944 | return online ? -EAGAIN : rc; |
| 3945 | } |
| 3946 | |
| 3947 | /** |
Tejun Heo | 203c75b | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 3948 | * ata_std_postreset - standard postreset callback |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3949 | * @link: the target ata_link |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3950 | * @classes: classes of attached devices |
| 3951 | * |
| 3952 | * This function is invoked after a successful reset. Note that |
| 3953 | * the device might have been reset more than once using |
| 3954 | * different reset methods before postreset is invoked. |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3955 | * |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3956 | * LOCKING: |
| 3957 | * Kernel thread context (may sleep) |
| 3958 | */ |
Tejun Heo | 203c75b | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 3959 | void ata_std_postreset(struct ata_link *link, unsigned int *classes) |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3960 | { |
Tejun Heo | f046519 | 2008-05-19 01:15:08 +0900 | [diff] [blame] | 3961 | u32 serror; |
| 3962 | |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3963 | DPRINTK("ENTER\n"); |
| 3964 | |
Tejun Heo | f046519 | 2008-05-19 01:15:08 +0900 | [diff] [blame] | 3965 | /* reset complete, clear SError */ |
| 3966 | if (!sata_scr_read(link, SCR_ERROR, &serror)) |
| 3967 | sata_scr_write(link, SCR_ERROR, serror); |
| 3968 | |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3969 | /* print link status */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3970 | sata_print_link_status(link); |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3971 | |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3972 | DPRINTK("EXIT\n"); |
| 3973 | } |
| 3974 | |
Tejun Heo | a62c0fc | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 3975 | /** |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3976 | * ata_dev_same_device - Determine whether new ID matches configured device |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3977 | * @dev: device to compare against |
| 3978 | * @new_class: class of the new device |
| 3979 | * @new_id: IDENTIFY page of the new device |
| 3980 | * |
| 3981 | * Compare @new_class and @new_id against @dev and determine |
| 3982 | * whether @dev is the device indicated by @new_class and |
| 3983 | * @new_id. |
| 3984 | * |
| 3985 | * LOCKING: |
| 3986 | * None. |
| 3987 | * |
| 3988 | * RETURNS: |
| 3989 | * 1 if @dev matches @new_class and @new_id, 0 otherwise. |
| 3990 | */ |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 3991 | static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class, |
| 3992 | const u16 *new_id) |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3993 | { |
| 3994 | const u16 *old_id = dev->id; |
Tejun Heo | a0cf733 | 2007-01-02 20:18:49 +0900 | [diff] [blame] | 3995 | unsigned char model[2][ATA_ID_PROD_LEN + 1]; |
| 3996 | unsigned char serial[2][ATA_ID_SERNO_LEN + 1]; |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 3997 | |
| 3998 | if (dev->class != new_class) { |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 3999 | ata_dev_printk(dev, KERN_INFO, "class mismatch %d != %d\n", |
| 4000 | dev->class, new_class); |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 4001 | return 0; |
| 4002 | } |
| 4003 | |
Tejun Heo | a0cf733 | 2007-01-02 20:18:49 +0900 | [diff] [blame] | 4004 | ata_id_c_string(old_id, model[0], ATA_ID_PROD, sizeof(model[0])); |
| 4005 | ata_id_c_string(new_id, model[1], ATA_ID_PROD, sizeof(model[1])); |
| 4006 | ata_id_c_string(old_id, serial[0], ATA_ID_SERNO, sizeof(serial[0])); |
| 4007 | 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] | 4008 | |
| 4009 | if (strcmp(model[0], model[1])) { |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 4010 | ata_dev_printk(dev, KERN_INFO, "model number mismatch " |
| 4011 | "'%s' != '%s'\n", model[0], model[1]); |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 4012 | return 0; |
| 4013 | } |
| 4014 | |
| 4015 | if (strcmp(serial[0], serial[1])) { |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 4016 | ata_dev_printk(dev, KERN_INFO, "serial number mismatch " |
| 4017 | "'%s' != '%s'\n", serial[0], serial[1]); |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 4018 | return 0; |
| 4019 | } |
| 4020 | |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 4021 | return 1; |
| 4022 | } |
| 4023 | |
| 4024 | /** |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 4025 | * ata_dev_reread_id - Re-read IDENTIFY data |
Henrik Kretzschmar | 3fae450 | 2007-06-19 10:10:50 +0200 | [diff] [blame] | 4026 | * @dev: target ATA device |
Tejun Heo | bff0464 | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 4027 | * @readid_flags: read ID flags |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 4028 | * |
| 4029 | * Re-read IDENTIFY page and make sure @dev is still attached to |
| 4030 | * the port. |
| 4031 | * |
| 4032 | * LOCKING: |
| 4033 | * Kernel thread context (may sleep) |
| 4034 | * |
| 4035 | * RETURNS: |
| 4036 | * 0 on success, negative errno otherwise |
| 4037 | */ |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 4038 | 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] | 4039 | { |
Tejun Heo | 5eb45c0 | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 4040 | unsigned int class = dev->class; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4041 | u16 *id = (void *)dev->link->ap->sector_buf; |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 4042 | int rc; |
| 4043 | |
Tejun Heo | fe635c7 | 2006-05-15 20:57:35 +0900 | [diff] [blame] | 4044 | /* read ID data */ |
Tejun Heo | bff0464 | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 4045 | rc = ata_dev_read_id(dev, &class, readid_flags, id); |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 4046 | if (rc) |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 4047 | return rc; |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 4048 | |
| 4049 | /* is the device still there? */ |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 4050 | if (!ata_dev_same_device(dev, class, id)) |
| 4051 | return -ENODEV; |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 4052 | |
Tejun Heo | fe635c7 | 2006-05-15 20:57:35 +0900 | [diff] [blame] | 4053 | memcpy(dev->id, id, sizeof(id[0]) * ATA_ID_WORDS); |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 4054 | return 0; |
| 4055 | } |
| 4056 | |
| 4057 | /** |
| 4058 | * ata_dev_revalidate - Revalidate ATA device |
| 4059 | * @dev: device to revalidate |
Tejun Heo | 422c9da | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 4060 | * @new_class: new class code |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 4061 | * @readid_flags: read ID flags |
| 4062 | * |
| 4063 | * Re-read IDENTIFY page, make sure @dev is still attached to the |
| 4064 | * port and reconfigure it according to the new IDENTIFY page. |
| 4065 | * |
| 4066 | * LOCKING: |
| 4067 | * Kernel thread context (may sleep) |
| 4068 | * |
| 4069 | * RETURNS: |
| 4070 | * 0 on success, negative errno otherwise |
| 4071 | */ |
Tejun Heo | 422c9da | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 4072 | int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class, |
| 4073 | unsigned int readid_flags) |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 4074 | { |
Tejun Heo | 6ddcd3b | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 4075 | u64 n_sectors = dev->n_sectors; |
Tejun Heo | 5920dad | 2009-07-15 17:11:41 +0900 | [diff] [blame] | 4076 | u64 n_native_sectors = dev->n_native_sectors; |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 4077 | int rc; |
| 4078 | |
| 4079 | if (!ata_dev_enabled(dev)) |
| 4080 | return -ENODEV; |
| 4081 | |
Tejun Heo | 422c9da | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 4082 | /* fail early if !ATA && !ATAPI to avoid issuing [P]IDENTIFY to PMP */ |
| 4083 | if (ata_class_enabled(new_class) && |
Borislav Petkov | f0d0613 | 2009-04-26 16:33:34 +0200 | [diff] [blame] | 4084 | new_class != ATA_DEV_ATA && |
| 4085 | new_class != ATA_DEV_ATAPI && |
| 4086 | new_class != ATA_DEV_SEMB) { |
Tejun Heo | 422c9da | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 4087 | ata_dev_printk(dev, KERN_INFO, "class mismatch %u != %u\n", |
| 4088 | dev->class, new_class); |
| 4089 | rc = -ENODEV; |
| 4090 | goto fail; |
| 4091 | } |
| 4092 | |
Tejun Heo | fe30911 | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 4093 | /* re-read ID */ |
| 4094 | rc = ata_dev_reread_id(dev, readid_flags); |
| 4095 | if (rc) |
| 4096 | goto fail; |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 4097 | |
| 4098 | /* configure device according to the new ID */ |
Tejun Heo | efdaedc | 2006-11-01 18:38:52 +0900 | [diff] [blame] | 4099 | rc = ata_dev_configure(dev); |
Tejun Heo | 6ddcd3b | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 4100 | if (rc) |
| 4101 | goto fail; |
| 4102 | |
| 4103 | /* verify n_sectors hasn't changed */ |
Tejun Heo | 445d211 | 2010-04-05 10:33:13 +0900 | [diff] [blame] | 4104 | if (dev->class != ATA_DEV_ATA || !n_sectors || |
| 4105 | dev->n_sectors == n_sectors) |
| 4106 | return 0; |
| 4107 | |
| 4108 | /* n_sectors has changed */ |
| 4109 | ata_dev_printk(dev, KERN_WARNING, "n_sectors mismatch %llu != %llu\n", |
| 4110 | (unsigned long long)n_sectors, |
| 4111 | (unsigned long long)dev->n_sectors); |
| 4112 | |
| 4113 | /* |
| 4114 | * Something could have caused HPA to be unlocked |
| 4115 | * involuntarily. If n_native_sectors hasn't changed and the |
| 4116 | * new size matches it, keep the device. |
| 4117 | */ |
| 4118 | if (dev->n_native_sectors == n_native_sectors && |
| 4119 | dev->n_sectors > n_sectors && dev->n_sectors == n_native_sectors) { |
| 4120 | ata_dev_printk(dev, KERN_WARNING, |
| 4121 | "new n_sectors matches native, probably " |
Tejun Heo | 68939ce | 2010-05-15 20:09:33 +0200 | [diff] [blame] | 4122 | "late HPA unlock, n_sectors updated\n"); |
| 4123 | /* use the larger n_sectors */ |
Tejun Heo | 445d211 | 2010-04-05 10:33:13 +0900 | [diff] [blame] | 4124 | return 0; |
Tejun Heo | 6ddcd3b | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 4125 | } |
| 4126 | |
Tejun Heo | 445d211 | 2010-04-05 10:33:13 +0900 | [diff] [blame] | 4127 | /* |
| 4128 | * Some BIOSes boot w/o HPA but resume w/ HPA locked. Try |
| 4129 | * unlocking HPA in those cases. |
| 4130 | * |
| 4131 | * https://bugzilla.kernel.org/show_bug.cgi?id=15396 |
| 4132 | */ |
| 4133 | if (dev->n_native_sectors == n_native_sectors && |
| 4134 | dev->n_sectors < n_sectors && n_sectors == n_native_sectors && |
| 4135 | !(dev->horkage & ATA_HORKAGE_BROKEN_HPA)) { |
| 4136 | ata_dev_printk(dev, KERN_WARNING, |
| 4137 | "old n_sectors matches native, probably " |
| 4138 | "late HPA lock, will try to unlock HPA\n"); |
| 4139 | /* try unlocking HPA */ |
| 4140 | dev->flags |= ATA_DFLAG_UNLOCK_HPA; |
| 4141 | rc = -EIO; |
| 4142 | } else |
| 4143 | rc = -ENODEV; |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 4144 | |
Tejun Heo | 445d211 | 2010-04-05 10:33:13 +0900 | [diff] [blame] | 4145 | /* restore original n_[native_]sectors and fail */ |
| 4146 | dev->n_native_sectors = n_native_sectors; |
| 4147 | dev->n_sectors = n_sectors; |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 4148 | fail: |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 4149 | ata_dev_printk(dev, KERN_ERR, "revalidation failed (errno=%d)\n", rc); |
Tejun Heo | 623a312 | 2006-03-05 17:55:58 +0900 | [diff] [blame] | 4150 | return rc; |
| 4151 | } |
| 4152 | |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4153 | struct ata_blacklist_entry { |
| 4154 | const char *model_num; |
| 4155 | const char *model_rev; |
| 4156 | unsigned long horkage; |
| 4157 | }; |
| 4158 | |
| 4159 | static const struct ata_blacklist_entry ata_device_blacklist [] = { |
| 4160 | /* Devices with DMA related problems under Linux */ |
| 4161 | { "WDC AC11000H", NULL, ATA_HORKAGE_NODMA }, |
| 4162 | { "WDC AC22100H", NULL, ATA_HORKAGE_NODMA }, |
| 4163 | { "WDC AC32500H", NULL, ATA_HORKAGE_NODMA }, |
| 4164 | { "WDC AC33100H", NULL, ATA_HORKAGE_NODMA }, |
| 4165 | { "WDC AC31600H", NULL, ATA_HORKAGE_NODMA }, |
| 4166 | { "WDC AC32100H", "24.09P07", ATA_HORKAGE_NODMA }, |
| 4167 | { "WDC AC23200L", "21.10N21", ATA_HORKAGE_NODMA }, |
| 4168 | { "Compaq CRD-8241B", NULL, ATA_HORKAGE_NODMA }, |
| 4169 | { "CRD-8400B", NULL, ATA_HORKAGE_NODMA }, |
| 4170 | { "CRD-8480B", NULL, ATA_HORKAGE_NODMA }, |
| 4171 | { "CRD-8482B", NULL, ATA_HORKAGE_NODMA }, |
| 4172 | { "CRD-84", NULL, ATA_HORKAGE_NODMA }, |
| 4173 | { "SanDisk SDP3B", NULL, ATA_HORKAGE_NODMA }, |
| 4174 | { "SanDisk SDP3B-64", NULL, ATA_HORKAGE_NODMA }, |
| 4175 | { "SANYO CD-ROM CRD", NULL, ATA_HORKAGE_NODMA }, |
| 4176 | { "HITACHI CDR-8", NULL, ATA_HORKAGE_NODMA }, |
| 4177 | { "HITACHI CDR-8335", NULL, ATA_HORKAGE_NODMA }, |
| 4178 | { "HITACHI CDR-8435", NULL, ATA_HORKAGE_NODMA }, |
| 4179 | { "Toshiba CD-ROM XM-6202B", NULL, ATA_HORKAGE_NODMA }, |
| 4180 | { "TOSHIBA CD-ROM XM-1702BC", NULL, ATA_HORKAGE_NODMA }, |
| 4181 | { "CD-532E-A", NULL, ATA_HORKAGE_NODMA }, |
| 4182 | { "E-IDE CD-ROM CR-840",NULL, ATA_HORKAGE_NODMA }, |
| 4183 | { "CD-ROM Drive/F5A", NULL, ATA_HORKAGE_NODMA }, |
| 4184 | { "WPI CDD-820", NULL, ATA_HORKAGE_NODMA }, |
| 4185 | { "SAMSUNG CD-ROM SC-148C", NULL, ATA_HORKAGE_NODMA }, |
| 4186 | { "SAMSUNG CD-ROM SC", NULL, ATA_HORKAGE_NODMA }, |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4187 | { "ATAPI CD-ROM DRIVE 40X MAXIMUM",NULL,ATA_HORKAGE_NODMA }, |
| 4188 | { "_NEC DV5800A", NULL, ATA_HORKAGE_NODMA }, |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 4189 | { "SAMSUNG CD-ROM SN-124", "N001", ATA_HORKAGE_NODMA }, |
Dave Jones | 39f1988 | 2007-05-21 14:31:03 -0400 | [diff] [blame] | 4190 | { "Seagate STT20000A", NULL, ATA_HORKAGE_NODMA }, |
Tejun Heo | 3af9a77 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 4191 | /* Odd clown on sil3726/4726 PMPs */ |
Tejun Heo | 50af2fa | 2008-05-19 01:15:14 +0900 | [diff] [blame] | 4192 | { "Config Disk", NULL, ATA_HORKAGE_DISABLE }, |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4193 | |
Albert Lee | 18d6e9d | 2007-04-02 11:34:15 +0800 | [diff] [blame] | 4194 | /* Weird ATAPI devices */ |
Tejun Heo | 40a1d53 | 2007-06-27 02:49:38 +0900 | [diff] [blame] | 4195 | { "TORiSAN DVD-ROM DRD-N216", NULL, ATA_HORKAGE_MAX_SEC_128 }, |
Tejun Heo | 6a87e42 | 2008-11-03 19:01:09 +0900 | [diff] [blame] | 4196 | { "QUANTUM DAT DAT72-000", NULL, ATA_HORKAGE_ATAPI_MOD16_DMA }, |
Albert Lee | 18d6e9d | 2007-04-02 11:34:15 +0800 | [diff] [blame] | 4197 | |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4198 | /* Devices we expect to fail diagnostics */ |
| 4199 | |
| 4200 | /* Devices where NCQ should be avoided */ |
| 4201 | /* NCQ is slow */ |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 4202 | { "WDC WD740ADFD-00", NULL, ATA_HORKAGE_NONCQ }, |
Tejun Heo | 459ad68 | 2007-12-07 12:46:23 +0900 | [diff] [blame] | 4203 | { "WDC WD740ADFD-00NLR1", NULL, ATA_HORKAGE_NONCQ, }, |
Tejun Heo | 09125ea | 2007-02-28 15:21:23 +0900 | [diff] [blame] | 4204 | /* http://thread.gmane.org/gmane.linux.ide/14907 */ |
| 4205 | { "FUJITSU MHT2060BH", NULL, ATA_HORKAGE_NONCQ }, |
Paul Rolland | 7acfaf3 | 2007-03-26 21:43:44 -0800 | [diff] [blame] | 4206 | /* NCQ is broken */ |
Jeff Garzik | 539cc7c | 2007-09-20 16:31:47 -0400 | [diff] [blame] | 4207 | { "Maxtor *", "BANC*", ATA_HORKAGE_NONCQ }, |
Alan Cox | 0e3dbc0 | 2007-09-20 15:22:47 +0100 | [diff] [blame] | 4208 | { "Maxtor 7V300F0", "VA111630", ATA_HORKAGE_NONCQ }, |
Paolo Ornati | da6f0ec | 2007-10-04 11:06:56 +0900 | [diff] [blame] | 4209 | { "ST380817AS", "3.42", ATA_HORKAGE_NONCQ }, |
Tejun Heo | e41bd3e | 2007-12-09 19:45:39 +0900 | [diff] [blame] | 4210 | { "ST3160023AS", "3.42", ATA_HORKAGE_NONCQ }, |
Lubomir Bulej | 5ccfca9 | 2008-12-22 11:35:22 +0100 | [diff] [blame] | 4211 | { "OCZ CORE_SSD", "02.10104", ATA_HORKAGE_NONCQ }, |
Jeff Garzik | 539cc7c | 2007-09-20 16:31:47 -0400 | [diff] [blame] | 4212 | |
Tejun Heo | ac70a96 | 2008-11-27 13:36:48 +0900 | [diff] [blame] | 4213 | /* Seagate NCQ + FLUSH CACHE firmware bug */ |
Tejun Heo | d10d491 | 2008-12-11 13:42:42 +0900 | [diff] [blame] | 4214 | { "ST31500341AS", "SD15", ATA_HORKAGE_NONCQ | |
Tejun Heo | ac70a96 | 2008-11-27 13:36:48 +0900 | [diff] [blame] | 4215 | ATA_HORKAGE_FIRMWARE_WARN }, |
Tejun Heo | d10d491 | 2008-12-11 13:42:42 +0900 | [diff] [blame] | 4216 | { "ST31500341AS", "SD16", ATA_HORKAGE_NONCQ | |
Tejun Heo | ac70a96 | 2008-11-27 13:36:48 +0900 | [diff] [blame] | 4217 | ATA_HORKAGE_FIRMWARE_WARN }, |
Tejun Heo | d10d491 | 2008-12-11 13:42:42 +0900 | [diff] [blame] | 4218 | { "ST31500341AS", "SD17", ATA_HORKAGE_NONCQ | |
Tejun Heo | ac70a96 | 2008-11-27 13:36:48 +0900 | [diff] [blame] | 4219 | ATA_HORKAGE_FIRMWARE_WARN }, |
Tejun Heo | d10d491 | 2008-12-11 13:42:42 +0900 | [diff] [blame] | 4220 | { "ST31500341AS", "SD18", ATA_HORKAGE_NONCQ | |
Tejun Heo | ac70a96 | 2008-11-27 13:36:48 +0900 | [diff] [blame] | 4221 | ATA_HORKAGE_FIRMWARE_WARN }, |
Tejun Heo | d10d491 | 2008-12-11 13:42:42 +0900 | [diff] [blame] | 4222 | { "ST31500341AS", "SD19", ATA_HORKAGE_NONCQ | |
Tejun Heo | ac70a96 | 2008-11-27 13:36:48 +0900 | [diff] [blame] | 4223 | ATA_HORKAGE_FIRMWARE_WARN }, |
Tejun Heo | d10d491 | 2008-12-11 13:42:42 +0900 | [diff] [blame] | 4224 | |
| 4225 | { "ST31000333AS", "SD15", ATA_HORKAGE_NONCQ | |
| 4226 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4227 | { "ST31000333AS", "SD16", ATA_HORKAGE_NONCQ | |
| 4228 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4229 | { "ST31000333AS", "SD17", ATA_HORKAGE_NONCQ | |
| 4230 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4231 | { "ST31000333AS", "SD18", ATA_HORKAGE_NONCQ | |
| 4232 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4233 | { "ST31000333AS", "SD19", ATA_HORKAGE_NONCQ | |
| 4234 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4235 | |
| 4236 | { "ST3640623AS", "SD15", ATA_HORKAGE_NONCQ | |
| 4237 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4238 | { "ST3640623AS", "SD16", ATA_HORKAGE_NONCQ | |
| 4239 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4240 | { "ST3640623AS", "SD17", ATA_HORKAGE_NONCQ | |
| 4241 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4242 | { "ST3640623AS", "SD18", ATA_HORKAGE_NONCQ | |
| 4243 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4244 | { "ST3640623AS", "SD19", ATA_HORKAGE_NONCQ | |
| 4245 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4246 | |
| 4247 | { "ST3640323AS", "SD15", ATA_HORKAGE_NONCQ | |
| 4248 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4249 | { "ST3640323AS", "SD16", ATA_HORKAGE_NONCQ | |
| 4250 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4251 | { "ST3640323AS", "SD17", ATA_HORKAGE_NONCQ | |
| 4252 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4253 | { "ST3640323AS", "SD18", ATA_HORKAGE_NONCQ | |
| 4254 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4255 | { "ST3640323AS", "SD19", ATA_HORKAGE_NONCQ | |
| 4256 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4257 | |
| 4258 | { "ST3320813AS", "SD15", ATA_HORKAGE_NONCQ | |
| 4259 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4260 | { "ST3320813AS", "SD16", ATA_HORKAGE_NONCQ | |
| 4261 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4262 | { "ST3320813AS", "SD17", ATA_HORKAGE_NONCQ | |
| 4263 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4264 | { "ST3320813AS", "SD18", ATA_HORKAGE_NONCQ | |
| 4265 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4266 | { "ST3320813AS", "SD19", ATA_HORKAGE_NONCQ | |
| 4267 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4268 | |
| 4269 | { "ST3320613AS", "SD15", ATA_HORKAGE_NONCQ | |
| 4270 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4271 | { "ST3320613AS", "SD16", ATA_HORKAGE_NONCQ | |
| 4272 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4273 | { "ST3320613AS", "SD17", ATA_HORKAGE_NONCQ | |
| 4274 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4275 | { "ST3320613AS", "SD18", ATA_HORKAGE_NONCQ | |
| 4276 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4277 | { "ST3320613AS", "SD19", ATA_HORKAGE_NONCQ | |
Tejun Heo | ac70a96 | 2008-11-27 13:36:48 +0900 | [diff] [blame] | 4278 | ATA_HORKAGE_FIRMWARE_WARN }, |
| 4279 | |
Robert Hancock | 36e337d | 2007-04-02 22:05:29 -0600 | [diff] [blame] | 4280 | /* Blacklist entries taken from Silicon Image 3124/3132 |
| 4281 | Windows driver .inf file - also several Linux problem reports */ |
| 4282 | { "HTS541060G9SA00", "MB3OC60D", ATA_HORKAGE_NONCQ, }, |
| 4283 | { "HTS541080G9SA00", "MB4OC60D", ATA_HORKAGE_NONCQ, }, |
| 4284 | { "HTS541010G9SA00", "MBZOC60D", ATA_HORKAGE_NONCQ, }, |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4285 | |
Tejun Heo | 68b0ddb | 2010-04-05 10:51:26 +0900 | [diff] [blame] | 4286 | /* https://bugzilla.kernel.org/show_bug.cgi?id=15573 */ |
| 4287 | { "C300-CTFDDAC128MAG", "0001", ATA_HORKAGE_NONCQ, }, |
| 4288 | |
Tejun Heo | 16c55b0 | 2007-08-29 11:58:33 +0900 | [diff] [blame] | 4289 | /* devices which puke on READ_NATIVE_MAX */ |
| 4290 | { "HDS724040KLSA80", "KFAOA20N", ATA_HORKAGE_BROKEN_HPA, }, |
| 4291 | { "WDC WD3200JD-00KLB0", "WD-WCAMR1130137", ATA_HORKAGE_BROKEN_HPA }, |
| 4292 | { "WDC WD2500JD-00HBB0", "WD-WMAL71490727", ATA_HORKAGE_BROKEN_HPA }, |
| 4293 | { "MAXTOR 6L080L4", "A93.0500", ATA_HORKAGE_BROKEN_HPA }, |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4294 | |
Tejun Heo | 7831387 | 2009-08-07 01:59:15 +0900 | [diff] [blame] | 4295 | /* this one allows HPA unlocking but fails IOs on the area */ |
| 4296 | { "OCZ-VERTEX", "1.30", ATA_HORKAGE_BROKEN_HPA }, |
| 4297 | |
Alan Cox | 93328e1 | 2007-09-29 04:06:48 -0400 | [diff] [blame] | 4298 | /* Devices which report 1 sector over size HPA */ |
| 4299 | { "ST340823A", NULL, ATA_HORKAGE_HPA_SIZE, }, |
| 4300 | { "ST320413A", NULL, ATA_HORKAGE_HPA_SIZE, }, |
Mikko Rapeli | b152fcd | 2008-02-19 01:41:25 +0100 | [diff] [blame] | 4301 | { "ST310211A", NULL, ATA_HORKAGE_HPA_SIZE, }, |
Alan Cox | 93328e1 | 2007-09-29 04:06:48 -0400 | [diff] [blame] | 4302 | |
Alan Cox | 6bbfd53 | 2007-11-05 22:58:58 +0000 | [diff] [blame] | 4303 | /* Devices which get the IVB wrong */ |
| 4304 | { "QUANTUM FIREBALLlct10 05", "A03.0900", ATA_HORKAGE_IVB, }, |
Alan Cox | a79067e | 2008-04-29 14:08:36 +0100 | [diff] [blame] | 4305 | /* Maybe we should just blacklist TSSTcorp... */ |
| 4306 | { "TSSTcorp CDDVDW SH-S202H", "SB00", ATA_HORKAGE_IVB, }, |
| 4307 | { "TSSTcorp CDDVDW SH-S202H", "SB01", ATA_HORKAGE_IVB, }, |
Alan Cox | 6bbfd53 | 2007-11-05 22:58:58 +0000 | [diff] [blame] | 4308 | { "TSSTcorp CDDVDW SH-S202J", "SB00", ATA_HORKAGE_IVB, }, |
Peter Missel | e9f3340 | 2007-11-27 18:04:42 +0100 | [diff] [blame] | 4309 | { "TSSTcorp CDDVDW SH-S202J", "SB01", ATA_HORKAGE_IVB, }, |
| 4310 | { "TSSTcorp CDDVDW SH-S202N", "SB00", ATA_HORKAGE_IVB, }, |
| 4311 | { "TSSTcorp CDDVDW SH-S202N", "SB01", ATA_HORKAGE_IVB, }, |
Alan Cox | 6bbfd53 | 2007-11-05 22:58:58 +0000 | [diff] [blame] | 4312 | |
Jens Axboe | 9ce8e30 | 2008-08-27 15:23:18 +0200 | [diff] [blame] | 4313 | /* Devices that do not need bridging limits applied */ |
| 4314 | { "MTRON MSP-SATA*", NULL, ATA_HORKAGE_BRIDGE_OK, }, |
| 4315 | |
Tejun Heo | 9062712 | 2009-01-29 20:31:36 +0900 | [diff] [blame] | 4316 | /* Devices which aren't very happy with higher link speeds */ |
| 4317 | { "WD My Book", NULL, ATA_HORKAGE_1_5_GBPS, }, |
| 4318 | |
Tejun Heo | d0cb43b | 2009-07-09 09:27:50 +0900 | [diff] [blame] | 4319 | /* |
| 4320 | * Devices which choke on SETXFER. Applies only if both the |
| 4321 | * device and controller are SATA. |
| 4322 | */ |
| 4323 | { "PIONEER DVD-RW DVRTD08", "1.00", ATA_HORKAGE_NOSETXFER }, |
| 4324 | |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4325 | /* End Marker */ |
| 4326 | { } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4327 | }; |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 4328 | |
Adrian Bunk | 741b776 | 2007-10-24 18:23:06 +0200 | [diff] [blame] | 4329 | 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] | 4330 | { |
| 4331 | const char *p; |
| 4332 | int len; |
| 4333 | |
| 4334 | /* |
| 4335 | * check for trailing wildcard: *\0 |
| 4336 | */ |
| 4337 | p = strchr(patt, wildchar); |
| 4338 | if (p && ((*(p + 1)) == 0)) |
| 4339 | len = p - patt; |
Andrew Paprocki | 317b50b | 2007-10-15 15:43:12 -0400 | [diff] [blame] | 4340 | else { |
Jeff Garzik | 539cc7c | 2007-09-20 16:31:47 -0400 | [diff] [blame] | 4341 | len = strlen(name); |
Andrew Paprocki | 317b50b | 2007-10-15 15:43:12 -0400 | [diff] [blame] | 4342 | if (!len) { |
| 4343 | if (!*patt) |
| 4344 | return 0; |
| 4345 | return -1; |
| 4346 | } |
| 4347 | } |
Jeff Garzik | 539cc7c | 2007-09-20 16:31:47 -0400 | [diff] [blame] | 4348 | |
| 4349 | return strncmp(patt, name, len); |
| 4350 | } |
| 4351 | |
Tejun Heo | 75683fe | 2007-07-05 13:31:27 +0900 | [diff] [blame] | 4352 | static unsigned long ata_dev_blacklisted(const struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4353 | { |
Tejun Heo | 8bfa79f | 2007-01-02 20:19:40 +0900 | [diff] [blame] | 4354 | unsigned char model_num[ATA_ID_PROD_LEN + 1]; |
| 4355 | unsigned char model_rev[ATA_ID_FW_REV_LEN + 1]; |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4356 | const struct ata_blacklist_entry *ad = ata_device_blacklist; |
Albert Lee | 3a77827 | 2006-06-22 13:00:25 +0800 | [diff] [blame] | 4357 | |
Tejun Heo | 8bfa79f | 2007-01-02 20:19:40 +0900 | [diff] [blame] | 4358 | ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num)); |
| 4359 | 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] | 4360 | |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4361 | while (ad->model_num) { |
Jeff Garzik | 539cc7c | 2007-09-20 16:31:47 -0400 | [diff] [blame] | 4362 | if (!strn_pattern_cmp(ad->model_num, model_num, '*')) { |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4363 | if (ad->model_rev == NULL) |
| 4364 | return ad->horkage; |
Jeff Garzik | 539cc7c | 2007-09-20 16:31:47 -0400 | [diff] [blame] | 4365 | if (!strn_pattern_cmp(ad->model_rev, model_rev, '*')) |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4366 | return ad->horkage; |
Alan Cox | f4b15fe | 2006-03-22 15:54:04 +0000 | [diff] [blame] | 4367 | } |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4368 | ad++; |
Alan Cox | f4b15fe | 2006-03-22 15:54:04 +0000 | [diff] [blame] | 4369 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4370 | return 0; |
| 4371 | } |
| 4372 | |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4373 | static int ata_dma_blacklisted(const struct ata_device *dev) |
| 4374 | { |
| 4375 | /* We don't support polling DMA. |
| 4376 | * DMA blacklist those ATAPI devices with CDB-intr (and use PIO) |
| 4377 | * if the LLDD handles only interrupts in the HSM_ST_LAST state. |
| 4378 | */ |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4379 | if ((dev->link->ap->flags & ATA_FLAG_PIO_POLLING) && |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4380 | (dev->flags & ATA_DFLAG_CDB_INTR)) |
| 4381 | return 1; |
Tejun Heo | 75683fe | 2007-07-05 13:31:27 +0900 | [diff] [blame] | 4382 | return (dev->horkage & ATA_HORKAGE_NODMA) ? 1 : 0; |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 4383 | } |
| 4384 | |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 4385 | /** |
Alan Cox | 6bbfd53 | 2007-11-05 22:58:58 +0000 | [diff] [blame] | 4386 | * ata_is_40wire - check drive side detection |
| 4387 | * @dev: device |
| 4388 | * |
| 4389 | * Perform drive side detection decoding, allowing for device vendors |
| 4390 | * who can't follow the documentation. |
| 4391 | */ |
| 4392 | |
| 4393 | static int ata_is_40wire(struct ata_device *dev) |
| 4394 | { |
| 4395 | if (dev->horkage & ATA_HORKAGE_IVB) |
| 4396 | return ata_drive_40wire_relaxed(dev->id); |
| 4397 | return ata_drive_40wire(dev->id); |
| 4398 | } |
| 4399 | |
| 4400 | /** |
Alan Cox | 15a5551 | 2008-03-28 14:33:46 -0700 | [diff] [blame] | 4401 | * cable_is_40wire - 40/80/SATA decider |
| 4402 | * @ap: port to consider |
| 4403 | * |
| 4404 | * This function encapsulates the policy for speed management |
| 4405 | * in one place. At the moment we don't cache the result but |
| 4406 | * there is a good case for setting ap->cbl to the result when |
| 4407 | * we are called with unknown cables (and figuring out if it |
| 4408 | * impacts hotplug at all). |
| 4409 | * |
| 4410 | * Return 1 if the cable appears to be 40 wire. |
| 4411 | */ |
| 4412 | |
| 4413 | static int cable_is_40wire(struct ata_port *ap) |
| 4414 | { |
| 4415 | struct ata_link *link; |
| 4416 | struct ata_device *dev; |
| 4417 | |
Tejun Heo | 4a9c7b3 | 2008-10-27 19:59:23 +0900 | [diff] [blame] | 4418 | /* If the controller thinks we are 40 wire, we are. */ |
Alan Cox | 15a5551 | 2008-03-28 14:33:46 -0700 | [diff] [blame] | 4419 | if (ap->cbl == ATA_CBL_PATA40) |
| 4420 | return 1; |
Tejun Heo | 4a9c7b3 | 2008-10-27 19:59:23 +0900 | [diff] [blame] | 4421 | |
| 4422 | /* If the controller thinks we are 80 wire, we are. */ |
Alan Cox | 15a5551 | 2008-03-28 14:33:46 -0700 | [diff] [blame] | 4423 | if (ap->cbl == ATA_CBL_PATA80 || ap->cbl == ATA_CBL_SATA) |
| 4424 | return 0; |
Tejun Heo | 4a9c7b3 | 2008-10-27 19:59:23 +0900 | [diff] [blame] | 4425 | |
| 4426 | /* If the system is known to be 40 wire short cable (eg |
| 4427 | * laptop), then we allow 80 wire modes even if the drive |
| 4428 | * isn't sure. |
| 4429 | */ |
Alan Cox | f792068 | 2008-04-08 16:37:50 +0100 | [diff] [blame] | 4430 | if (ap->cbl == ATA_CBL_PATA40_SHORT) |
| 4431 | return 0; |
Alan Cox | 15a5551 | 2008-03-28 14:33:46 -0700 | [diff] [blame] | 4432 | |
Tejun Heo | 4a9c7b3 | 2008-10-27 19:59:23 +0900 | [diff] [blame] | 4433 | /* If the controller doesn't know, we scan. |
| 4434 | * |
| 4435 | * Note: We look for all 40 wire detects at this point. Any |
| 4436 | * 80 wire detect is taken to be 80 wire cable because |
| 4437 | * - in many setups only the one drive (slave if present) will |
| 4438 | * give a valid detect |
| 4439 | * - if you have a non detect capable drive you don't want it |
| 4440 | * to colour the choice |
| 4441 | */ |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 4442 | ata_for_each_link(link, ap, EDGE) { |
| 4443 | ata_for_each_dev(dev, link, ENABLED) { |
| 4444 | if (!ata_is_40wire(dev)) |
Alan Cox | 15a5551 | 2008-03-28 14:33:46 -0700 | [diff] [blame] | 4445 | return 0; |
| 4446 | } |
| 4447 | } |
| 4448 | return 1; |
| 4449 | } |
| 4450 | |
| 4451 | /** |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 4452 | * ata_dev_xfermask - Compute supported xfermask of the given device |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 4453 | * @dev: Device to compute xfermask for |
| 4454 | * |
Tejun Heo | acf356b | 2006-03-24 14:07:50 +0900 | [diff] [blame] | 4455 | * Compute supported xfermask of @dev and store it in |
| 4456 | * dev->*_mask. This function is responsible for applying all |
| 4457 | * known limits including host controller limits, device |
| 4458 | * blacklist, etc... |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 4459 | * |
| 4460 | * LOCKING: |
| 4461 | * None. |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 4462 | */ |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 4463 | static void ata_dev_xfermask(struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4464 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4465 | struct ata_link *link = dev->link; |
| 4466 | struct ata_port *ap = link->ap; |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4467 | struct ata_host *host = ap->host; |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 4468 | unsigned long xfer_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4469 | |
Tejun Heo | 37deecb | 2006-08-10 16:59:07 +0900 | [diff] [blame] | 4470 | /* controller modes available */ |
Tejun Heo | 565083e | 2006-04-02 17:54:47 +0900 | [diff] [blame] | 4471 | xfer_mask = ata_pack_xfermask(ap->pio_mask, |
| 4472 | ap->mwdma_mask, ap->udma_mask); |
| 4473 | |
Robert Hancock | 8343f88 | 2007-03-06 02:37:51 -0800 | [diff] [blame] | 4474 | /* drive modes available */ |
Tejun Heo | 37deecb | 2006-08-10 16:59:07 +0900 | [diff] [blame] | 4475 | xfer_mask &= ata_pack_xfermask(dev->pio_mask, |
| 4476 | dev->mwdma_mask, dev->udma_mask); |
| 4477 | xfer_mask &= ata_id_xfermask(dev->id); |
Tejun Heo | 565083e | 2006-04-02 17:54:47 +0900 | [diff] [blame] | 4478 | |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 4479 | /* |
| 4480 | * CFA Advanced TrueIDE timings are not allowed on a shared |
| 4481 | * cable |
| 4482 | */ |
| 4483 | if (ata_dev_pair(dev)) { |
| 4484 | /* No PIO5 or PIO6 */ |
| 4485 | xfer_mask &= ~(0x03 << (ATA_SHIFT_PIO + 5)); |
| 4486 | /* No MWDMA3 or MWDMA 4 */ |
| 4487 | xfer_mask &= ~(0x03 << (ATA_SHIFT_MWDMA + 3)); |
| 4488 | } |
| 4489 | |
Tejun Heo | 37deecb | 2006-08-10 16:59:07 +0900 | [diff] [blame] | 4490 | if (ata_dma_blacklisted(dev)) { |
| 4491 | xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA); |
Tejun Heo | f15a1da | 2006-05-15 20:57:56 +0900 | [diff] [blame] | 4492 | ata_dev_printk(dev, KERN_WARNING, |
| 4493 | "device is on DMA blacklist, disabling DMA\n"); |
Tejun Heo | 37deecb | 2006-08-10 16:59:07 +0900 | [diff] [blame] | 4494 | } |
Tejun Heo | a6d5a51 | 2006-03-06 04:31:57 +0900 | [diff] [blame] | 4495 | |
Petr Vandrovec | 14d66ab | 2007-03-08 10:12:12 +0100 | [diff] [blame] | 4496 | if ((host->flags & ATA_HOST_SIMPLEX) && |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 4497 | host->simplex_claimed && host->simplex_claimed != ap) { |
Tejun Heo | 37deecb | 2006-08-10 16:59:07 +0900 | [diff] [blame] | 4498 | xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA); |
| 4499 | ata_dev_printk(dev, KERN_WARNING, "simplex DMA is claimed by " |
| 4500 | "other device, disabling DMA\n"); |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 4501 | } |
Tejun Heo | 565083e | 2006-04-02 17:54:47 +0900 | [diff] [blame] | 4502 | |
Jeff Garzik | e424675 | 2007-03-09 09:56:46 -0500 | [diff] [blame] | 4503 | if (ap->flags & ATA_FLAG_NO_IORDY) |
| 4504 | xfer_mask &= ata_pio_mask_no_iordy(dev); |
| 4505 | |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 4506 | if (ap->ops->mode_filter) |
Alan Cox | a76b62c | 2007-03-09 09:34:07 -0500 | [diff] [blame] | 4507 | xfer_mask = ap->ops->mode_filter(dev, xfer_mask); |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 4508 | |
Robert Hancock | 8343f88 | 2007-03-06 02:37:51 -0800 | [diff] [blame] | 4509 | /* Apply cable rule here. Don't apply it early because when |
| 4510 | * we handle hot plug the cable type can itself change. |
| 4511 | * Check this last so that we know if the transfer rate was |
| 4512 | * solely limited by the cable. |
| 4513 | * Unknown or 80 wire cables reported host side are checked |
| 4514 | * drive side as well. Cases where we know a 40wire cable |
| 4515 | * is used safely for 80 are not checked here. |
| 4516 | */ |
| 4517 | if (xfer_mask & (0xF8 << ATA_SHIFT_UDMA)) |
| 4518 | /* UDMA/44 or higher would be available */ |
Alan Cox | 15a5551 | 2008-03-28 14:33:46 -0700 | [diff] [blame] | 4519 | if (cable_is_40wire(ap)) { |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 4520 | ata_dev_printk(dev, KERN_WARNING, |
Robert Hancock | 8343f88 | 2007-03-06 02:37:51 -0800 | [diff] [blame] | 4521 | "limited to UDMA/33 due to 40-wire cable\n"); |
| 4522 | xfer_mask &= ~(0xF8 << ATA_SHIFT_UDMA); |
| 4523 | } |
| 4524 | |
Tejun Heo | 565083e | 2006-04-02 17:54:47 +0900 | [diff] [blame] | 4525 | ata_unpack_xfermask(xfer_mask, &dev->pio_mask, |
| 4526 | &dev->mwdma_mask, &dev->udma_mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4527 | } |
| 4528 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4529 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4530 | * ata_dev_set_xfermode - Issue SET FEATURES - XFER MODE command |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4531 | * @dev: Device to which command will be sent |
| 4532 | * |
Jeff Garzik | 780a87f | 2005-05-30 15:41:05 -0400 | [diff] [blame] | 4533 | * Issue SET FEATURES - XFER MODE command to device @dev |
| 4534 | * on port @ap. |
| 4535 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4536 | * LOCKING: |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4537 | * PCI/etc. bus probe sem. |
Tejun Heo | 83206a2 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 4538 | * |
| 4539 | * RETURNS: |
| 4540 | * 0 on success, AC_ERR_* mask otherwise. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4541 | */ |
| 4542 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 4543 | static unsigned int ata_dev_set_xfermode(struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4544 | { |
Tejun Heo | a012370 | 2005-12-13 14:49:31 +0900 | [diff] [blame] | 4545 | struct ata_taskfile tf; |
Tejun Heo | 83206a2 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 4546 | unsigned int err_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4547 | |
| 4548 | /* set up set-features taskfile */ |
| 4549 | DPRINTK("set features - xfer mode\n"); |
| 4550 | |
Tejun Heo | 464cf17 | 2007-05-27 15:10:40 +0200 | [diff] [blame] | 4551 | /* Some controllers and ATAPI devices show flaky interrupt |
| 4552 | * behavior after setting xfer mode. Use polling instead. |
| 4553 | */ |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 4554 | ata_tf_init(dev, &tf); |
Tejun Heo | a012370 | 2005-12-13 14:49:31 +0900 | [diff] [blame] | 4555 | tf.command = ATA_CMD_SET_FEATURES; |
| 4556 | tf.feature = SETFEATURES_XFER; |
Tejun Heo | 464cf17 | 2007-05-27 15:10:40 +0200 | [diff] [blame] | 4557 | tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_POLLING; |
Tejun Heo | a012370 | 2005-12-13 14:49:31 +0900 | [diff] [blame] | 4558 | tf.protocol = ATA_PROT_NODATA; |
Alan Cox | b9f8ab2 | 2007-11-19 14:33:11 +0000 | [diff] [blame] | 4559 | /* If we are using IORDY we must send the mode setting command */ |
Jeff Garzik | 11b7bec | 2007-11-23 21:12:14 -0500 | [diff] [blame] | 4560 | if (ata_pio_need_iordy(dev)) |
| 4561 | tf.nsect = dev->xfer_mode; |
Alan Cox | b9f8ab2 | 2007-11-19 14:33:11 +0000 | [diff] [blame] | 4562 | /* If the device has IORDY and the controller does not - turn it off */ |
| 4563 | else if (ata_id_has_iordy(dev->id)) |
Jeff Garzik | 11b7bec | 2007-11-23 21:12:14 -0500 | [diff] [blame] | 4564 | tf.nsect = 0x01; |
Alan Cox | b9f8ab2 | 2007-11-19 14:33:11 +0000 | [diff] [blame] | 4565 | else /* In the ancient relic department - skip all of this */ |
| 4566 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4567 | |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 4568 | 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] | 4569 | |
Tejun Heo | 83206a2 | 2006-03-24 15:25:31 +0900 | [diff] [blame] | 4570 | DPRINTK("EXIT, err_mask=%x\n", err_mask); |
| 4571 | return err_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4572 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4573 | /** |
Jeff Garzik | 218f3d3 | 2007-10-25 00:33:27 -0400 | [diff] [blame] | 4574 | * ata_dev_set_feature - Issue SET FEATURES - SATA FEATURES |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 4575 | * @dev: Device to which command will be sent |
| 4576 | * @enable: Whether to enable or disable the feature |
Jeff Garzik | 218f3d3 | 2007-10-25 00:33:27 -0400 | [diff] [blame] | 4577 | * @feature: The sector count represents the feature to set |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 4578 | * |
| 4579 | * Issue SET FEATURES - SATA FEATURES command to device @dev |
Jeff Garzik | 218f3d3 | 2007-10-25 00:33:27 -0400 | [diff] [blame] | 4580 | * on port @ap with sector count |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 4581 | * |
| 4582 | * LOCKING: |
| 4583 | * PCI/etc. bus probe sem. |
| 4584 | * |
| 4585 | * RETURNS: |
| 4586 | * 0 on success, AC_ERR_* mask otherwise. |
| 4587 | */ |
Jeff Garzik | 218f3d3 | 2007-10-25 00:33:27 -0400 | [diff] [blame] | 4588 | static unsigned int ata_dev_set_feature(struct ata_device *dev, u8 enable, |
| 4589 | u8 feature) |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 4590 | { |
| 4591 | struct ata_taskfile tf; |
| 4592 | unsigned int err_mask; |
| 4593 | |
| 4594 | /* set up set-features taskfile */ |
| 4595 | DPRINTK("set features - SATA features\n"); |
| 4596 | |
| 4597 | ata_tf_init(dev, &tf); |
| 4598 | tf.command = ATA_CMD_SET_FEATURES; |
| 4599 | tf.feature = enable; |
| 4600 | tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 4601 | tf.protocol = ATA_PROT_NODATA; |
Jeff Garzik | 218f3d3 | 2007-10-25 00:33:27 -0400 | [diff] [blame] | 4602 | tf.nsect = feature; |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 4603 | |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 4604 | 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] | 4605 | |
| 4606 | DPRINTK("EXIT, err_mask=%x\n", err_mask); |
| 4607 | return err_mask; |
| 4608 | } |
| 4609 | |
| 4610 | /** |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4611 | * ata_dev_init_params - Issue INIT DEV PARAMS command |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4612 | * @dev: Device to which command will be sent |
Randy Dunlap | e2a7f77 | 2006-05-18 10:50:18 -0700 | [diff] [blame] | 4613 | * @heads: Number of heads (taskfile parameter) |
| 4614 | * @sectors: Number of sectors (taskfile parameter) |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4615 | * |
| 4616 | * LOCKING: |
Tejun Heo | 6aff8f1 | 2006-02-15 18:24:09 +0900 | [diff] [blame] | 4617 | * Kernel thread context (may sleep) |
| 4618 | * |
| 4619 | * RETURNS: |
| 4620 | * 0 on success, AC_ERR_* mask otherwise. |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4621 | */ |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 4622 | static unsigned int ata_dev_init_params(struct ata_device *dev, |
| 4623 | u16 heads, u16 sectors) |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4624 | { |
Tejun Heo | a012370 | 2005-12-13 14:49:31 +0900 | [diff] [blame] | 4625 | struct ata_taskfile tf; |
Tejun Heo | 6aff8f1 | 2006-02-15 18:24:09 +0900 | [diff] [blame] | 4626 | unsigned int err_mask; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4627 | |
| 4628 | /* Number of sectors per track 1-255. Number of heads 1-16 */ |
| 4629 | if (sectors < 1 || sectors > 255 || heads < 1 || heads > 16) |
Albert Lee | 00b6f5e | 2006-03-27 16:39:18 +0800 | [diff] [blame] | 4630 | return AC_ERR_INVALID; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4631 | |
| 4632 | /* set up init dev params taskfile */ |
| 4633 | DPRINTK("init dev params \n"); |
| 4634 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 4635 | ata_tf_init(dev, &tf); |
Tejun Heo | a012370 | 2005-12-13 14:49:31 +0900 | [diff] [blame] | 4636 | tf.command = ATA_CMD_INIT_DEV_PARAMS; |
| 4637 | tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 4638 | tf.protocol = ATA_PROT_NODATA; |
| 4639 | tf.nsect = sectors; |
| 4640 | tf.device |= (heads - 1) & 0x0f; /* max head = num. of heads - 1 */ |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4641 | |
Tejun Heo | 2b78910 | 2007-10-09 15:05:44 +0900 | [diff] [blame] | 4642 | 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] | 4643 | /* A clean abort indicates an original or just out of spec drive |
| 4644 | and we should continue as we issue the setup based on the |
| 4645 | drive reported working geometry */ |
| 4646 | if (err_mask == AC_ERR_DEV && (tf.feature & ATA_ABORTED)) |
| 4647 | err_mask = 0; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4648 | |
Tejun Heo | 6aff8f1 | 2006-02-15 18:24:09 +0900 | [diff] [blame] | 4649 | DPRINTK("EXIT, err_mask=%x\n", err_mask); |
| 4650 | return err_mask; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 4651 | } |
| 4652 | |
| 4653 | /** |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4654 | * ata_sg_clean - Unmap DMA memory associated with command |
| 4655 | * @qc: Command containing DMA memory to be released |
| 4656 | * |
| 4657 | * Unmap all mapped DMA memory associated with this command. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4658 | * |
| 4659 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4660 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4661 | */ |
Tejun Heo | 70e6ad0 | 2006-11-14 22:47:10 +0900 | [diff] [blame] | 4662 | void ata_sg_clean(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4663 | { |
| 4664 | struct ata_port *ap = qc->ap; |
Tejun Heo | ff2aeb1 | 2007-12-05 16:43:11 +0900 | [diff] [blame] | 4665 | struct scatterlist *sg = qc->sg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4666 | int dir = qc->dma_dir; |
| 4667 | |
Tejun Heo | efcb3cf | 2009-01-09 19:19:14 +0900 | [diff] [blame] | 4668 | WARN_ON_ONCE(sg == NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4669 | |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 4670 | VPRINTK("unmapping %u sg elements\n", qc->n_elem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4671 | |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 4672 | if (qc->n_elem) |
FUJITA Tomonori | 5825627 | 2009-02-27 17:35:43 +0900 | [diff] [blame] | 4673 | dma_unmap_sg(ap->dev, sg, qc->orig_n_elem, dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4674 | |
| 4675 | qc->flags &= ~ATA_QCFLAG_DMAMAP; |
Tejun Heo | ff2aeb1 | 2007-12-05 16:43:11 +0900 | [diff] [blame] | 4676 | qc->sg = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4677 | } |
| 4678 | |
| 4679 | /** |
Tejun Heo | 5895ef9 | 2008-06-17 12:36:26 +0900 | [diff] [blame] | 4680 | * atapi_check_dma - Check whether ATAPI DMA can be supported |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4681 | * @qc: Metadata associated with taskfile to check |
| 4682 | * |
Jeff Garzik | 780a87f | 2005-05-30 15:41:05 -0400 | [diff] [blame] | 4683 | * Allow low-level driver to filter ATA PACKET commands, returning |
| 4684 | * a status indicating whether or not it is OK to use DMA for the |
| 4685 | * supplied PACKET command. |
| 4686 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4687 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4688 | * spin_lock_irqsave(host lock) |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4689 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4690 | * RETURNS: 0 when ATAPI DMA can be used |
| 4691 | * nonzero otherwise |
| 4692 | */ |
Tejun Heo | 5895ef9 | 2008-06-17 12:36:26 +0900 | [diff] [blame] | 4693 | int atapi_check_dma(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4694 | { |
| 4695 | struct ata_port *ap = qc->ap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4696 | |
Tejun Heo | b9a4197 | 2007-06-27 02:48:43 +0900 | [diff] [blame] | 4697 | /* Don't allow DMA if it isn't multiple of 16 bytes. Quite a |
| 4698 | * few ATAPI devices choke on such DMA requests. |
| 4699 | */ |
Tejun Heo | 6a87e42 | 2008-11-03 19:01:09 +0900 | [diff] [blame] | 4700 | if (!(qc->dev->horkage & ATA_HORKAGE_ATAPI_MOD16_DMA) && |
| 4701 | unlikely(qc->nbytes & 15)) |
Tejun Heo | b9a4197 | 2007-06-27 02:48:43 +0900 | [diff] [blame] | 4702 | return 1; |
Albert Lee | 6f23a31 | 2007-04-02 11:39:25 +0800 | [diff] [blame] | 4703 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4704 | if (ap->ops->check_atapi_dma) |
Tejun Heo | b9a4197 | 2007-06-27 02:48:43 +0900 | [diff] [blame] | 4705 | return ap->ops->check_atapi_dma(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4706 | |
Tejun Heo | b9a4197 | 2007-06-27 02:48:43 +0900 | [diff] [blame] | 4707 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4708 | } |
Tejun Heo | b9a4197 | 2007-06-27 02:48:43 +0900 | [diff] [blame] | 4709 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4710 | /** |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 4711 | * ata_std_qc_defer - Check whether a qc needs to be deferred |
| 4712 | * @qc: ATA command in question |
| 4713 | * |
| 4714 | * Non-NCQ commands cannot run with any other command, NCQ or |
| 4715 | * not. As upper layer only knows the queue depth, we are |
| 4716 | * responsible for maintaining exclusion. This function checks |
| 4717 | * whether a new command @qc can be issued. |
| 4718 | * |
| 4719 | * LOCKING: |
| 4720 | * spin_lock_irqsave(host lock) |
| 4721 | * |
| 4722 | * RETURNS: |
| 4723 | * ATA_DEFER_* if deferring is needed, 0 otherwise. |
| 4724 | */ |
| 4725 | int ata_std_qc_defer(struct ata_queued_cmd *qc) |
| 4726 | { |
| 4727 | struct ata_link *link = qc->dev->link; |
| 4728 | |
| 4729 | if (qc->tf.protocol == ATA_PROT_NCQ) { |
| 4730 | if (!ata_tag_valid(link->active_tag)) |
| 4731 | return 0; |
| 4732 | } else { |
| 4733 | if (!ata_tag_valid(link->active_tag) && !link->sactive) |
| 4734 | return 0; |
| 4735 | } |
| 4736 | |
| 4737 | return ATA_DEFER_LINK; |
| 4738 | } |
| 4739 | |
Brian King | e46834c | 2006-03-17 17:04:03 -0600 | [diff] [blame] | 4740 | void ata_noop_qc_prep(struct ata_queued_cmd *qc) { } |
| 4741 | |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4742 | /** |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4743 | * ata_sg_init - Associate command with scatter-gather table. |
| 4744 | * @qc: Command to be associated |
| 4745 | * @sg: Scatter-gather table. |
| 4746 | * @n_elem: Number of elements in s/g table. |
| 4747 | * |
| 4748 | * Initialize the data-related elements of queued_cmd @qc |
| 4749 | * to point to a scatter-gather table @sg, containing @n_elem |
| 4750 | * elements. |
| 4751 | * |
| 4752 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4753 | * spin_lock_irqsave(host lock) |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4754 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4755 | void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, |
| 4756 | unsigned int n_elem) |
| 4757 | { |
Tejun Heo | ff2aeb1 | 2007-12-05 16:43:11 +0900 | [diff] [blame] | 4758 | qc->sg = sg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4759 | qc->n_elem = n_elem; |
Tejun Heo | ff2aeb1 | 2007-12-05 16:43:11 +0900 | [diff] [blame] | 4760 | qc->cursg = qc->sg; |
| 4761 | } |
| 4762 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4763 | /** |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4764 | * ata_sg_setup - DMA-map the scatter-gather table associated with a command. |
| 4765 | * @qc: Command with scatter-gather table to be mapped. |
| 4766 | * |
| 4767 | * DMA-map the scatter-gather table associated with queued_cmd @qc. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4768 | * |
| 4769 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4770 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4771 | * |
| 4772 | * RETURNS: |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4773 | * Zero on success, negative on error. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4774 | * |
| 4775 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4776 | static int ata_sg_setup(struct ata_queued_cmd *qc) |
| 4777 | { |
| 4778 | struct ata_port *ap = qc->ap; |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 4779 | unsigned int n_elem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4780 | |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 4781 | VPRINTK("ENTER, ata%u\n", ap->print_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4782 | |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 4783 | n_elem = dma_map_sg(ap->dev, qc->sg, qc->n_elem, qc->dma_dir); |
| 4784 | if (n_elem < 1) |
| 4785 | return -1; |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 4786 | |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 4787 | DPRINTK("%d sg elements mapped\n", n_elem); |
FUJITA Tomonori | 5825627 | 2009-02-27 17:35:43 +0900 | [diff] [blame] | 4788 | qc->orig_n_elem = qc->n_elem; |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 4789 | qc->n_elem = n_elem; |
Tejun Heo | f92a263 | 2007-12-05 16:43:10 +0900 | [diff] [blame] | 4790 | qc->flags |= ATA_QCFLAG_DMAMAP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4791 | |
| 4792 | return 0; |
| 4793 | } |
| 4794 | |
| 4795 | /** |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 4796 | * swap_buf_le16 - swap halves of 16-bit words in place |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 4797 | * @buf: Buffer to swap |
| 4798 | * @buf_words: Number of 16-bit words in buffer. |
| 4799 | * |
| 4800 | * Swap halves of 16-bit words if needed to convert from |
| 4801 | * little-endian byte order to native cpu byte order, or |
| 4802 | * vice-versa. |
| 4803 | * |
| 4804 | * LOCKING: |
Randy Dunlap | 6f0ef4f | 2005-10-25 01:44:30 -0400 | [diff] [blame] | 4805 | * Inherited from caller. |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 4806 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4807 | void swap_buf_le16(u16 *buf, unsigned int buf_words) |
| 4808 | { |
| 4809 | #ifdef __BIG_ENDIAN |
| 4810 | unsigned int i; |
| 4811 | |
| 4812 | for (i = 0; i < buf_words; i++) |
| 4813 | buf[i] = le16_to_cpu(buf[i]); |
| 4814 | #endif /* __BIG_ENDIAN */ |
| 4815 | } |
| 4816 | |
Albert Lee | 6ae4cfb | 2005-08-12 14:15:34 +0800 | [diff] [blame] | 4817 | /** |
Tejun Heo | 8a8bc22 | 2008-11-10 14:48:21 +0900 | [diff] [blame] | 4818 | * ata_qc_new - Request an available ATA command, for queueing |
Randy Dunlap | 5eb66fe | 2009-01-20 16:28:59 -0800 | [diff] [blame] | 4819 | * @ap: target port |
Tejun Heo | 8a8bc22 | 2008-11-10 14:48:21 +0900 | [diff] [blame] | 4820 | * |
| 4821 | * LOCKING: |
| 4822 | * None. |
| 4823 | */ |
| 4824 | |
| 4825 | static struct ata_queued_cmd *ata_qc_new(struct ata_port *ap) |
| 4826 | { |
| 4827 | struct ata_queued_cmd *qc = NULL; |
| 4828 | unsigned int i; |
| 4829 | |
| 4830 | /* no command while frozen */ |
| 4831 | if (unlikely(ap->pflags & ATA_PFLAG_FROZEN)) |
| 4832 | return NULL; |
| 4833 | |
| 4834 | /* the last tag is reserved for internal command. */ |
| 4835 | for (i = 0; i < ATA_MAX_QUEUE - 1; i++) |
| 4836 | if (!test_and_set_bit(i, &ap->qc_allocated)) { |
| 4837 | qc = __ata_qc_from_tag(ap, i); |
| 4838 | break; |
| 4839 | } |
| 4840 | |
| 4841 | if (qc) |
| 4842 | qc->tag = i; |
| 4843 | |
| 4844 | return qc; |
| 4845 | } |
| 4846 | |
| 4847 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4848 | * ata_qc_new_init - Request an available ATA command, and initialize it |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4849 | * @dev: Device from whom we request an available command structure |
| 4850 | * |
| 4851 | * LOCKING: |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 4852 | * None. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4853 | */ |
| 4854 | |
Tejun Heo | 8a8bc22 | 2008-11-10 14:48:21 +0900 | [diff] [blame] | 4855 | struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4856 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4857 | struct ata_port *ap = dev->link->ap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4858 | struct ata_queued_cmd *qc; |
| 4859 | |
Tejun Heo | 8a8bc22 | 2008-11-10 14:48:21 +0900 | [diff] [blame] | 4860 | qc = ata_qc_new(ap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4861 | if (qc) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4862 | qc->scsicmd = NULL; |
| 4863 | qc->ap = ap; |
| 4864 | qc->dev = dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4865 | |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 4866 | ata_qc_reinit(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4867 | } |
| 4868 | |
| 4869 | return qc; |
| 4870 | } |
| 4871 | |
Tejun Heo | 8a8bc22 | 2008-11-10 14:48:21 +0900 | [diff] [blame] | 4872 | /** |
| 4873 | * ata_qc_free - free unused ata_queued_cmd |
| 4874 | * @qc: Command to complete |
| 4875 | * |
| 4876 | * Designed to free unused ata_queued_cmd object |
| 4877 | * in case something prevents using it. |
| 4878 | * |
| 4879 | * LOCKING: |
| 4880 | * spin_lock_irqsave(host lock) |
| 4881 | */ |
| 4882 | void ata_qc_free(struct ata_queued_cmd *qc) |
| 4883 | { |
Julia Lawall | a110401 | 2009-10-17 08:41:47 +0200 | [diff] [blame] | 4884 | struct ata_port *ap; |
Tejun Heo | 8a8bc22 | 2008-11-10 14:48:21 +0900 | [diff] [blame] | 4885 | unsigned int tag; |
| 4886 | |
Tejun Heo | efcb3cf | 2009-01-09 19:19:14 +0900 | [diff] [blame] | 4887 | WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ |
Julia Lawall | a110401 | 2009-10-17 08:41:47 +0200 | [diff] [blame] | 4888 | ap = qc->ap; |
Tejun Heo | 8a8bc22 | 2008-11-10 14:48:21 +0900 | [diff] [blame] | 4889 | |
| 4890 | qc->flags = 0; |
| 4891 | tag = qc->tag; |
| 4892 | if (likely(ata_tag_valid(tag))) { |
| 4893 | qc->tag = ATA_TAG_POISON; |
| 4894 | clear_bit(tag, &ap->qc_allocated); |
| 4895 | } |
| 4896 | } |
| 4897 | |
Tejun Heo | 7601442 | 2006-02-11 15:13:49 +0900 | [diff] [blame] | 4898 | void __ata_qc_complete(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4899 | { |
Julia Lawall | a110401 | 2009-10-17 08:41:47 +0200 | [diff] [blame] | 4900 | struct ata_port *ap; |
| 4901 | struct ata_link *link; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4902 | |
Tejun Heo | efcb3cf | 2009-01-09 19:19:14 +0900 | [diff] [blame] | 4903 | WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ |
| 4904 | WARN_ON_ONCE(!(qc->flags & ATA_QCFLAG_ACTIVE)); |
Julia Lawall | a110401 | 2009-10-17 08:41:47 +0200 | [diff] [blame] | 4905 | ap = qc->ap; |
| 4906 | link = qc->dev->link; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4907 | |
| 4908 | if (likely(qc->flags & ATA_QCFLAG_DMAMAP)) |
| 4909 | ata_sg_clean(qc); |
| 4910 | |
Tejun Heo | 7401abf | 2006-05-15 20:57:32 +0900 | [diff] [blame] | 4911 | /* command should be marked inactive atomically with qc completion */ |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 4912 | if (qc->tf.protocol == ATA_PROT_NCQ) { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4913 | link->sactive &= ~(1 << qc->tag); |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 4914 | if (!link->sactive) |
| 4915 | ap->nr_active_links--; |
| 4916 | } else { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 4917 | link->active_tag = ATA_TAG_POISON; |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 4918 | ap->nr_active_links--; |
| 4919 | } |
| 4920 | |
| 4921 | /* clear exclusive status */ |
| 4922 | if (unlikely(qc->flags & ATA_QCFLAG_CLEAR_EXCL && |
| 4923 | ap->excl_link == link)) |
| 4924 | ap->excl_link = NULL; |
Tejun Heo | 7401abf | 2006-05-15 20:57:32 +0900 | [diff] [blame] | 4925 | |
Albert Lee | 3f3791d | 2005-08-16 14:25:38 +0800 | [diff] [blame] | 4926 | /* atapi: mark qc as inactive to prevent the interrupt handler |
| 4927 | * from completing the command twice later, before the error handler |
| 4928 | * is called. (when rc != 0 and atapi request sense is needed) |
| 4929 | */ |
| 4930 | qc->flags &= ~ATA_QCFLAG_ACTIVE; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 4931 | ap->qc_active &= ~(1 << qc->tag); |
Albert Lee | 3f3791d | 2005-08-16 14:25:38 +0800 | [diff] [blame] | 4932 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4933 | /* call completion callback */ |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 4934 | qc->complete_fn(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4935 | } |
| 4936 | |
Tejun Heo | 39599a5 | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 4937 | static void fill_result_tf(struct ata_queued_cmd *qc) |
| 4938 | { |
| 4939 | struct ata_port *ap = qc->ap; |
| 4940 | |
Tejun Heo | 39599a5 | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 4941 | qc->result_tf.flags = qc->tf.flags; |
Tejun Heo | 22183bf | 2008-04-07 22:47:20 +0900 | [diff] [blame] | 4942 | ap->ops->qc_fill_rtf(qc); |
Tejun Heo | 39599a5 | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 4943 | } |
| 4944 | |
Tejun Heo | 00115e0 | 2007-11-27 19:28:58 +0900 | [diff] [blame] | 4945 | static void ata_verify_xfer(struct ata_queued_cmd *qc) |
| 4946 | { |
| 4947 | struct ata_device *dev = qc->dev; |
| 4948 | |
| 4949 | if (ata_tag_internal(qc->tag)) |
| 4950 | return; |
| 4951 | |
| 4952 | if (ata_is_nodata(qc->tf.protocol)) |
| 4953 | return; |
| 4954 | |
| 4955 | if ((dev->mwdma_mask || dev->udma_mask) && ata_is_pio(qc->tf.protocol)) |
| 4956 | return; |
| 4957 | |
| 4958 | dev->flags &= ~ATA_DFLAG_DUBIOUS_XFER; |
| 4959 | } |
| 4960 | |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 4961 | /** |
| 4962 | * ata_qc_complete - Complete an active ATA command |
| 4963 | * @qc: Command to complete |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 4964 | * |
| 4965 | * Indicate to the mid and upper layers that an ATA |
| 4966 | * command has completed, with either an ok or not-ok status. |
| 4967 | * |
| 4968 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 4969 | * spin_lock_irqsave(host lock) |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 4970 | */ |
| 4971 | void ata_qc_complete(struct ata_queued_cmd *qc) |
| 4972 | { |
| 4973 | struct ata_port *ap = qc->ap; |
| 4974 | |
| 4975 | /* XXX: New EH and old EH use different mechanisms to |
| 4976 | * synchronize EH with regular execution path. |
| 4977 | * |
| 4978 | * In new EH, a failed qc is marked with ATA_QCFLAG_FAILED. |
| 4979 | * Normal execution path is responsible for not accessing a |
| 4980 | * failed qc. libata core enforces the rule by returning NULL |
| 4981 | * from ata_qc_from_tag() for failed qcs. |
| 4982 | * |
| 4983 | * Old EH depends on ata_qc_complete() nullifying completion |
| 4984 | * requests if ATA_QCFLAG_EH_SCHEDULED is set. Old EH does |
| 4985 | * not synchronize with interrupt handler. Only PIO task is |
| 4986 | * taken care of. |
| 4987 | */ |
| 4988 | if (ap->ops->error_handler) { |
Tejun Heo | 4dbfa39 | 2007-10-25 18:22:44 +0900 | [diff] [blame] | 4989 | struct ata_device *dev = qc->dev; |
| 4990 | struct ata_eh_info *ehi = &dev->link->eh_info; |
| 4991 | |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 4992 | if (unlikely(qc->err_mask)) |
| 4993 | qc->flags |= ATA_QCFLAG_FAILED; |
| 4994 | |
| 4995 | if (unlikely(qc->flags & ATA_QCFLAG_FAILED)) { |
Tejun Heo | f4b31db9 | 2009-10-16 13:00:51 +0900 | [diff] [blame] | 4996 | /* always fill result TF for failed qc */ |
| 4997 | fill_result_tf(qc); |
| 4998 | |
| 4999 | if (!ata_tag_internal(qc->tag)) |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 5000 | ata_qc_schedule_eh(qc); |
Tejun Heo | f4b31db9 | 2009-10-16 13:00:51 +0900 | [diff] [blame] | 5001 | else |
| 5002 | __ata_qc_complete(qc); |
| 5003 | return; |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 5004 | } |
| 5005 | |
Tejun Heo | 4dc738e | 2009-09-17 18:45:27 +0900 | [diff] [blame] | 5006 | WARN_ON_ONCE(ap->pflags & ATA_PFLAG_FROZEN); |
| 5007 | |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 5008 | /* read result TF if requested */ |
| 5009 | if (qc->flags & ATA_QCFLAG_RESULT_TF) |
Tejun Heo | 39599a5 | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 5010 | fill_result_tf(qc); |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 5011 | |
Tejun Heo | 4dbfa39 | 2007-10-25 18:22:44 +0900 | [diff] [blame] | 5012 | /* Some commands need post-processing after successful |
| 5013 | * completion. |
| 5014 | */ |
| 5015 | switch (qc->tf.command) { |
| 5016 | case ATA_CMD_SET_FEATURES: |
| 5017 | if (qc->tf.feature != SETFEATURES_WC_ON && |
| 5018 | qc->tf.feature != SETFEATURES_WC_OFF) |
| 5019 | break; |
| 5020 | /* fall through */ |
| 5021 | case ATA_CMD_INIT_DEV_PARAMS: /* CHS translation changed */ |
| 5022 | case ATA_CMD_SET_MULTI: /* multi_count changed */ |
| 5023 | /* revalidate device */ |
| 5024 | ehi->dev_action[dev->devno] |= ATA_EH_REVALIDATE; |
| 5025 | ata_port_schedule_eh(ap); |
| 5026 | break; |
Tejun Heo | 054a5fb | 2007-10-25 18:30:36 +0900 | [diff] [blame] | 5027 | |
| 5028 | case ATA_CMD_SLEEP: |
| 5029 | dev->flags |= ATA_DFLAG_SLEEPING; |
| 5030 | break; |
Tejun Heo | 4dbfa39 | 2007-10-25 18:22:44 +0900 | [diff] [blame] | 5031 | } |
| 5032 | |
Tejun Heo | 00115e0 | 2007-11-27 19:28:58 +0900 | [diff] [blame] | 5033 | if (unlikely(dev->flags & ATA_DFLAG_DUBIOUS_XFER)) |
| 5034 | ata_verify_xfer(qc); |
| 5035 | |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 5036 | __ata_qc_complete(qc); |
| 5037 | } else { |
| 5038 | if (qc->flags & ATA_QCFLAG_EH_SCHEDULED) |
| 5039 | return; |
| 5040 | |
| 5041 | /* read result TF if failed or requested */ |
| 5042 | if (qc->err_mask || qc->flags & ATA_QCFLAG_RESULT_TF) |
Tejun Heo | 39599a5 | 2006-11-14 22:37:35 +0900 | [diff] [blame] | 5043 | fill_result_tf(qc); |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 5044 | |
| 5045 | __ata_qc_complete(qc); |
| 5046 | } |
| 5047 | } |
| 5048 | |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 5049 | /** |
| 5050 | * ata_qc_complete_multiple - Complete multiple qcs successfully |
| 5051 | * @ap: port in question |
| 5052 | * @qc_active: new qc_active mask |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 5053 | * |
| 5054 | * Complete in-flight commands. This functions is meant to be |
| 5055 | * called from low-level driver's interrupt routine to complete |
| 5056 | * requests normally. ap->qc_active and @qc_active is compared |
| 5057 | * and commands are completed accordingly. |
| 5058 | * |
| 5059 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5060 | * spin_lock_irqsave(host lock) |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 5061 | * |
| 5062 | * RETURNS: |
| 5063 | * Number of completed commands on success, -errno otherwise. |
| 5064 | */ |
Tejun Heo | 79f97da | 2008-04-07 22:47:20 +0900 | [diff] [blame] | 5065 | int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active) |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 5066 | { |
| 5067 | int nr_done = 0; |
| 5068 | u32 done_mask; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 5069 | |
| 5070 | done_mask = ap->qc_active ^ qc_active; |
| 5071 | |
| 5072 | if (unlikely(done_mask & qc_active)) { |
| 5073 | ata_port_printk(ap, KERN_ERR, "illegal qc_active transition " |
| 5074 | "(%08x->%08x)\n", ap->qc_active, qc_active); |
| 5075 | return -EINVAL; |
| 5076 | } |
| 5077 | |
Jens Axboe | 4376818 | 2009-05-20 09:44:39 +0200 | [diff] [blame] | 5078 | while (done_mask) { |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 5079 | struct ata_queued_cmd *qc; |
Jens Axboe | 4376818 | 2009-05-20 09:44:39 +0200 | [diff] [blame] | 5080 | unsigned int tag = __ffs(done_mask); |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 5081 | |
Jens Axboe | 4376818 | 2009-05-20 09:44:39 +0200 | [diff] [blame] | 5082 | qc = ata_qc_from_tag(ap, tag); |
| 5083 | if (qc) { |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 5084 | ata_qc_complete(qc); |
| 5085 | nr_done++; |
| 5086 | } |
Jens Axboe | 4376818 | 2009-05-20 09:44:39 +0200 | [diff] [blame] | 5087 | done_mask &= ~(1 << tag); |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 5088 | } |
| 5089 | |
| 5090 | return nr_done; |
| 5091 | } |
| 5092 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5093 | /** |
| 5094 | * ata_qc_issue - issue taskfile to device |
| 5095 | * @qc: command to issue to device |
| 5096 | * |
| 5097 | * Prepare an ATA command to submission to device. |
| 5098 | * This includes mapping the data into a DMA-able |
| 5099 | * area, filling in the S/G table, and finally |
| 5100 | * writing the taskfile to hardware, starting the command. |
| 5101 | * |
| 5102 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5103 | * spin_lock_irqsave(host lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5104 | */ |
Tejun Heo | 8e0e694 | 2006-03-31 20:41:11 +0900 | [diff] [blame] | 5105 | void ata_qc_issue(struct ata_queued_cmd *qc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5106 | { |
| 5107 | struct ata_port *ap = qc->ap; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 5108 | struct ata_link *link = qc->dev->link; |
Tejun Heo | 405e66b | 2007-11-27 19:28:53 +0900 | [diff] [blame] | 5109 | u8 prot = qc->tf.protocol; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5110 | |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 5111 | /* Make sure only one non-NCQ command is outstanding. The |
| 5112 | * check is skipped for old EH because it reuses active qc to |
| 5113 | * request ATAPI sense. |
| 5114 | */ |
Tejun Heo | efcb3cf | 2009-01-09 19:19:14 +0900 | [diff] [blame] | 5115 | WARN_ON_ONCE(ap->ops->error_handler && ata_tag_valid(link->active_tag)); |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 5116 | |
Tejun Heo | 1973a02 | 2007-12-05 10:36:13 +0900 | [diff] [blame] | 5117 | if (ata_is_ncq(prot)) { |
Tejun Heo | efcb3cf | 2009-01-09 19:19:14 +0900 | [diff] [blame] | 5118 | WARN_ON_ONCE(link->sactive & (1 << qc->tag)); |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 5119 | |
| 5120 | if (!link->sactive) |
| 5121 | ap->nr_active_links++; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 5122 | link->sactive |= 1 << qc->tag; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 5123 | } else { |
Tejun Heo | efcb3cf | 2009-01-09 19:19:14 +0900 | [diff] [blame] | 5124 | WARN_ON_ONCE(link->sactive); |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 5125 | |
| 5126 | ap->nr_active_links++; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 5127 | link->active_tag = qc->tag; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 5128 | } |
| 5129 | |
Tejun Heo | e4a70e7 | 2006-03-31 20:36:47 +0900 | [diff] [blame] | 5130 | qc->flags |= ATA_QCFLAG_ACTIVE; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 5131 | ap->qc_active |= 1 << qc->tag; |
Tejun Heo | e4a70e7 | 2006-03-31 20:36:47 +0900 | [diff] [blame] | 5132 | |
Tejun Heo | f92a263 | 2007-12-05 16:43:10 +0900 | [diff] [blame] | 5133 | /* We guarantee to LLDs that they will have at least one |
| 5134 | * non-zero sg if the command is a data command. |
| 5135 | */ |
Tejun Heo | ff2aeb1 | 2007-12-05 16:43:11 +0900 | [diff] [blame] | 5136 | 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] | 5137 | |
Tejun Heo | 405e66b | 2007-11-27 19:28:53 +0900 | [diff] [blame] | 5138 | if (ata_is_dma(prot) || (ata_is_pio(prot) && |
Tejun Heo | f92a263 | 2007-12-05 16:43:10 +0900 | [diff] [blame] | 5139 | (ap->flags & ATA_FLAG_PIO_DMA))) |
Tejun Heo | 001102d | 2007-12-05 16:43:09 +0900 | [diff] [blame] | 5140 | if (ata_sg_setup(qc)) |
| 5141 | goto sg_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5142 | |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 5143 | /* if device is sleeping, schedule reset and abort the link */ |
Tejun Heo | 054a5fb | 2007-10-25 18:30:36 +0900 | [diff] [blame] | 5144 | if (unlikely(qc->dev->flags & ATA_DFLAG_SLEEPING)) { |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 5145 | link->eh_info.action |= ATA_EH_RESET; |
Tejun Heo | 054a5fb | 2007-10-25 18:30:36 +0900 | [diff] [blame] | 5146 | ata_ehi_push_desc(&link->eh_info, "waking up from sleep"); |
| 5147 | ata_link_abort(link); |
| 5148 | return; |
| 5149 | } |
| 5150 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5151 | ap->ops->qc_prep(qc); |
| 5152 | |
Tejun Heo | 8e0e694 | 2006-03-31 20:41:11 +0900 | [diff] [blame] | 5153 | qc->err_mask |= ap->ops->qc_issue(qc); |
| 5154 | if (unlikely(qc->err_mask)) |
| 5155 | goto err; |
| 5156 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5157 | |
Tejun Heo | 8e436af | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 5158 | sg_err: |
Tejun Heo | 8e0e694 | 2006-03-31 20:41:11 +0900 | [diff] [blame] | 5159 | qc->err_mask |= AC_ERR_SYSTEM; |
| 5160 | err: |
| 5161 | ata_qc_complete(qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5162 | } |
| 5163 | |
| 5164 | /** |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5165 | * sata_scr_valid - test whether SCRs are accessible |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5166 | * @link: ATA link to test SCR accessibility for |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5167 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5168 | * Test whether SCRs are accessible for @link. |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5169 | * |
| 5170 | * LOCKING: |
| 5171 | * None. |
| 5172 | * |
| 5173 | * RETURNS: |
| 5174 | * 1 if SCRs are accessible, 0 otherwise. |
| 5175 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5176 | int sata_scr_valid(struct ata_link *link) |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5177 | { |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5178 | struct ata_port *ap = link->ap; |
| 5179 | |
Tejun Heo | a16abc0 | 2007-05-21 18:33:47 +0200 | [diff] [blame] | 5180 | return (ap->flags & ATA_FLAG_SATA) && ap->ops->scr_read; |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5181 | } |
| 5182 | |
| 5183 | /** |
| 5184 | * sata_scr_read - read SCR register of the specified port |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5185 | * @link: ATA link to read SCR for |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5186 | * @reg: SCR to read |
| 5187 | * @val: Place to store read value |
| 5188 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5189 | * Read SCR register @reg of @link into *@val. This function is |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5190 | * guaranteed to succeed if @link is ap->link, the cable type of |
| 5191 | * the port is SATA and the port implements ->scr_read. |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5192 | * |
| 5193 | * LOCKING: |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5194 | * None if @link is ap->link. Kernel thread context otherwise. |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5195 | * |
| 5196 | * RETURNS: |
| 5197 | * 0 on success, negative errno on failure. |
| 5198 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5199 | int sata_scr_read(struct ata_link *link, int reg, u32 *val) |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5200 | { |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5201 | if (ata_is_host_link(link)) { |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5202 | if (sata_scr_valid(link)) |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 5203 | return link->ap->ops->scr_read(link, reg, val); |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5204 | return -EOPNOTSUPP; |
| 5205 | } |
| 5206 | |
| 5207 | return sata_pmp_scr_read(link, reg, val); |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5208 | } |
| 5209 | |
| 5210 | /** |
| 5211 | * sata_scr_write - write SCR register of the specified port |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5212 | * @link: ATA link to write SCR for |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5213 | * @reg: SCR to write |
| 5214 | * @val: value to write |
| 5215 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5216 | * Write @val to SCR register @reg of @link. This function is |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5217 | * guaranteed to succeed if @link is ap->link, the cable type of |
| 5218 | * the port is SATA and the port implements ->scr_read. |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5219 | * |
| 5220 | * LOCKING: |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5221 | * None if @link is ap->link. Kernel thread context otherwise. |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5222 | * |
| 5223 | * RETURNS: |
| 5224 | * 0 on success, negative errno on failure. |
| 5225 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5226 | int sata_scr_write(struct ata_link *link, int reg, u32 val) |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5227 | { |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5228 | if (ata_is_host_link(link)) { |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5229 | if (sata_scr_valid(link)) |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 5230 | return link->ap->ops->scr_write(link, reg, val); |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5231 | return -EOPNOTSUPP; |
| 5232 | } |
| 5233 | |
| 5234 | return sata_pmp_scr_write(link, reg, val); |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5235 | } |
| 5236 | |
| 5237 | /** |
| 5238 | * 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] | 5239 | * @link: ATA link to write SCR for |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5240 | * @reg: SCR to write |
| 5241 | * @val: value to write |
| 5242 | * |
| 5243 | * This function is identical to sata_scr_write() except that this |
| 5244 | * function performs flush after writing to the register. |
| 5245 | * |
| 5246 | * LOCKING: |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5247 | * None if @link is ap->link. Kernel thread context otherwise. |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5248 | * |
| 5249 | * RETURNS: |
| 5250 | * 0 on success, negative errno on failure. |
| 5251 | */ |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5252 | 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] | 5253 | { |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5254 | if (ata_is_host_link(link)) { |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5255 | int rc; |
Tejun Heo | da3dbb1 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 5256 | |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5257 | if (sata_scr_valid(link)) { |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 5258 | rc = link->ap->ops->scr_write(link, reg, val); |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5259 | if (rc == 0) |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 5260 | rc = link->ap->ops->scr_read(link, reg, &val); |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5261 | return rc; |
| 5262 | } |
| 5263 | return -EOPNOTSUPP; |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5264 | } |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5265 | |
| 5266 | return sata_pmp_scr_write(link, reg, val); |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5267 | } |
| 5268 | |
| 5269 | /** |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 5270 | * ata_phys_link_online - test whether the given link is online |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5271 | * @link: ATA link to test |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5272 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5273 | * Test whether @link is online. Note that this function returns |
| 5274 | * 0 if online status of @link cannot be obtained, so |
| 5275 | * ata_link_online(link) != !ata_link_offline(link). |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5276 | * |
| 5277 | * LOCKING: |
| 5278 | * None. |
| 5279 | * |
| 5280 | * RETURNS: |
Tejun Heo | b5b3fa3 | 2008-07-31 17:02:42 +0900 | [diff] [blame] | 5281 | * True if the port online status is available and online. |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5282 | */ |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 5283 | bool ata_phys_link_online(struct ata_link *link) |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5284 | { |
| 5285 | u32 sstatus; |
| 5286 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5287 | if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0 && |
Tejun Heo | 9913ff8 | 2009-01-29 20:31:31 +0900 | [diff] [blame] | 5288 | ata_sstatus_online(sstatus)) |
Tejun Heo | b5b3fa3 | 2008-07-31 17:02:42 +0900 | [diff] [blame] | 5289 | return true; |
| 5290 | return false; |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5291 | } |
| 5292 | |
| 5293 | /** |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 5294 | * ata_phys_link_offline - test whether the given link is offline |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5295 | * @link: ATA link to test |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5296 | * |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5297 | * Test whether @link is offline. Note that this function |
| 5298 | * returns 0 if offline status of @link cannot be obtained, so |
| 5299 | * ata_link_online(link) != !ata_link_offline(link). |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5300 | * |
| 5301 | * LOCKING: |
| 5302 | * None. |
| 5303 | * |
| 5304 | * RETURNS: |
Tejun Heo | b5b3fa3 | 2008-07-31 17:02:42 +0900 | [diff] [blame] | 5305 | * True if the port offline status is available and offline. |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5306 | */ |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 5307 | bool ata_phys_link_offline(struct ata_link *link) |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5308 | { |
| 5309 | u32 sstatus; |
| 5310 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5311 | if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0 && |
Tejun Heo | 9913ff8 | 2009-01-29 20:31:31 +0900 | [diff] [blame] | 5312 | !ata_sstatus_online(sstatus)) |
Tejun Heo | b5b3fa3 | 2008-07-31 17:02:42 +0900 | [diff] [blame] | 5313 | return true; |
| 5314 | return false; |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 5315 | } |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 5316 | |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 5317 | /** |
| 5318 | * ata_link_online - test whether the given link is online |
| 5319 | * @link: ATA link to test |
| 5320 | * |
| 5321 | * Test whether @link is online. This is identical to |
| 5322 | * ata_phys_link_online() when there's no slave link. When |
| 5323 | * there's a slave link, this function should only be called on |
| 5324 | * the master link and will return true if any of M/S links is |
| 5325 | * online. |
| 5326 | * |
| 5327 | * LOCKING: |
| 5328 | * None. |
| 5329 | * |
| 5330 | * RETURNS: |
| 5331 | * True if the port online status is available and online. |
| 5332 | */ |
| 5333 | bool ata_link_online(struct ata_link *link) |
| 5334 | { |
| 5335 | struct ata_link *slave = link->ap->slave_link; |
| 5336 | |
| 5337 | WARN_ON(link == slave); /* shouldn't be called on slave link */ |
| 5338 | |
| 5339 | return ata_phys_link_online(link) || |
| 5340 | (slave && ata_phys_link_online(slave)); |
| 5341 | } |
| 5342 | |
| 5343 | /** |
| 5344 | * ata_link_offline - test whether the given link is offline |
| 5345 | * @link: ATA link to test |
| 5346 | * |
| 5347 | * Test whether @link is offline. This is identical to |
| 5348 | * ata_phys_link_offline() when there's no slave link. When |
| 5349 | * there's a slave link, this function should only be called on |
| 5350 | * the master link and will return true if both M/S links are |
| 5351 | * offline. |
| 5352 | * |
| 5353 | * LOCKING: |
| 5354 | * None. |
| 5355 | * |
| 5356 | * RETURNS: |
| 5357 | * True if the port offline status is available and offline. |
| 5358 | */ |
| 5359 | bool ata_link_offline(struct ata_link *link) |
| 5360 | { |
| 5361 | struct ata_link *slave = link->ap->slave_link; |
| 5362 | |
| 5363 | WARN_ON(link == slave); /* shouldn't be called on slave link */ |
| 5364 | |
| 5365 | return ata_phys_link_offline(link) && |
| 5366 | (!slave || ata_phys_link_offline(slave)); |
| 5367 | } |
| 5368 | |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 5369 | #ifdef CONFIG_PM |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5370 | static int ata_host_request_pm(struct ata_host *host, pm_message_t mesg, |
| 5371 | unsigned int action, unsigned int ehi_flags, |
| 5372 | int wait) |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5373 | { |
| 5374 | unsigned long flags; |
| 5375 | int i, rc; |
| 5376 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5377 | for (i = 0; i < host->n_ports; i++) { |
| 5378 | struct ata_port *ap = host->ports[i]; |
Tejun Heo | e3667eb | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 5379 | struct ata_link *link; |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5380 | |
| 5381 | /* Previous resume operation might still be in |
| 5382 | * progress. Wait for PM_PENDING to clear. |
| 5383 | */ |
| 5384 | if (ap->pflags & ATA_PFLAG_PM_PENDING) { |
| 5385 | ata_port_wait_eh(ap); |
| 5386 | WARN_ON(ap->pflags & ATA_PFLAG_PM_PENDING); |
| 5387 | } |
| 5388 | |
| 5389 | /* request PM ops to EH */ |
| 5390 | spin_lock_irqsave(ap->lock, flags); |
| 5391 | |
| 5392 | ap->pm_mesg = mesg; |
| 5393 | if (wait) { |
| 5394 | rc = 0; |
| 5395 | ap->pm_result = &rc; |
| 5396 | } |
| 5397 | |
| 5398 | ap->pflags |= ATA_PFLAG_PM_PENDING; |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 5399 | ata_for_each_link(link, ap, HOST_FIRST) { |
Tejun Heo | e3667eb | 2007-08-06 18:36:24 +0900 | [diff] [blame] | 5400 | link->eh_info.action |= action; |
| 5401 | link->eh_info.flags |= ehi_flags; |
| 5402 | } |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5403 | |
| 5404 | ata_port_schedule_eh(ap); |
| 5405 | |
| 5406 | spin_unlock_irqrestore(ap->lock, flags); |
| 5407 | |
| 5408 | /* wait and check result */ |
| 5409 | if (wait) { |
| 5410 | ata_port_wait_eh(ap); |
| 5411 | WARN_ON(ap->pflags & ATA_PFLAG_PM_PENDING); |
| 5412 | if (rc) |
| 5413 | return rc; |
| 5414 | } |
| 5415 | } |
| 5416 | |
| 5417 | return 0; |
| 5418 | } |
| 5419 | |
| 5420 | /** |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5421 | * ata_host_suspend - suspend host |
| 5422 | * @host: host to suspend |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5423 | * @mesg: PM message |
| 5424 | * |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5425 | * Suspend @host. Actual operation is performed by EH. This |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5426 | * function requests EH to perform PM operations and waits for EH |
| 5427 | * to finish. |
| 5428 | * |
| 5429 | * LOCKING: |
| 5430 | * Kernel thread context (may sleep). |
| 5431 | * |
| 5432 | * RETURNS: |
| 5433 | * 0 on success, -errno on failure. |
| 5434 | */ |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5435 | int ata_host_suspend(struct ata_host *host, pm_message_t mesg) |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5436 | { |
Tejun Heo | 9666f40 | 2007-05-04 21:27:47 +0200 | [diff] [blame] | 5437 | int rc; |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5438 | |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 5439 | /* |
| 5440 | * disable link pm on all ports before requesting |
| 5441 | * any pm activity |
| 5442 | */ |
| 5443 | ata_lpm_enable(host); |
| 5444 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5445 | rc = ata_host_request_pm(host, mesg, 0, ATA_EHI_QUIET, 1); |
Jeff Garzik | 72ad6ec | 2008-02-25 17:31:10 -0500 | [diff] [blame] | 5446 | if (rc == 0) |
| 5447 | host->dev->power.power_state = mesg; |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5448 | return rc; |
| 5449 | } |
| 5450 | |
| 5451 | /** |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5452 | * ata_host_resume - resume host |
| 5453 | * @host: host to resume |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5454 | * |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5455 | * Resume @host. Actual operation is performed by EH. This |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5456 | * function requests EH to perform PM operations and returns. |
| 5457 | * Note that all resume operations are performed parallely. |
| 5458 | * |
| 5459 | * LOCKING: |
| 5460 | * Kernel thread context (may sleep). |
| 5461 | */ |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5462 | void ata_host_resume(struct ata_host *host) |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5463 | { |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 5464 | ata_host_request_pm(host, PMSG_ON, ATA_EH_RESET, |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5465 | ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, 0); |
Jeff Garzik | 72ad6ec | 2008-02-25 17:31:10 -0500 | [diff] [blame] | 5466 | host->dev->power.power_state = PMSG_ON; |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 5467 | |
| 5468 | /* reenable link pm */ |
| 5469 | ata_lpm_disable(host); |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5470 | } |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 5471 | #endif |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 5472 | |
Randy Dunlap | c893a3a | 2006-01-28 13:15:32 -0500 | [diff] [blame] | 5473 | /** |
Tejun Heo | 3ef3b43 | 2006-05-31 18:27:30 +0900 | [diff] [blame] | 5474 | * ata_dev_init - Initialize an ata_device structure |
| 5475 | * @dev: Device structure to initialize |
| 5476 | * |
| 5477 | * Initialize @dev in preparation for probing. |
| 5478 | * |
| 5479 | * LOCKING: |
| 5480 | * Inherited from caller. |
| 5481 | */ |
| 5482 | void ata_dev_init(struct ata_device *dev) |
| 5483 | { |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 5484 | struct ata_link *link = ata_dev_phys_link(dev); |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 5485 | struct ata_port *ap = link->ap; |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 5486 | unsigned long flags; |
Tejun Heo | 3ef3b43 | 2006-05-31 18:27:30 +0900 | [diff] [blame] | 5487 | |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 5488 | /* SATA spd limit is bound to the attached device, reset together */ |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 5489 | link->sata_spd_limit = link->hw_sata_spd_limit; |
| 5490 | link->sata_spd = 0; |
Tejun Heo | 5a04bf4 | 2006-05-31 18:27:38 +0900 | [diff] [blame] | 5491 | |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 5492 | /* High bits of dev->flags are used to record warm plug |
| 5493 | * requests which occur asynchronously. Synchronize using |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5494 | * host lock. |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 5495 | */ |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 5496 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 5497 | dev->flags &= ~ATA_DFLAG_INIT_MASK; |
Tejun Heo | 3dcc323 | 2007-09-03 12:20:11 +0900 | [diff] [blame] | 5498 | dev->horkage = 0; |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 5499 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 5500 | |
Tejun Heo | 99cf610 | 2009-01-29 20:31:32 +0900 | [diff] [blame] | 5501 | memset((void *)dev + ATA_DEVICE_CLEAR_BEGIN, 0, |
| 5502 | ATA_DEVICE_CLEAR_END - ATA_DEVICE_CLEAR_BEGIN); |
Tejun Heo | 3ef3b43 | 2006-05-31 18:27:30 +0900 | [diff] [blame] | 5503 | dev->pio_mask = UINT_MAX; |
| 5504 | dev->mwdma_mask = UINT_MAX; |
| 5505 | dev->udma_mask = UINT_MAX; |
| 5506 | } |
| 5507 | |
| 5508 | /** |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5509 | * ata_link_init - Initialize an ata_link structure |
| 5510 | * @ap: ATA port link is attached to |
| 5511 | * @link: Link structure to initialize |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5512 | * @pmp: Port multiplier port number |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5513 | * |
| 5514 | * Initialize @link. |
| 5515 | * |
| 5516 | * LOCKING: |
| 5517 | * Kernel thread context (may sleep) |
| 5518 | */ |
Tejun Heo | fb7fd61 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 5519 | 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] | 5520 | { |
| 5521 | int i; |
| 5522 | |
| 5523 | /* clear everything except for devices */ |
| 5524 | memset(link, 0, offsetof(struct ata_link, device[0])); |
| 5525 | |
| 5526 | link->ap = ap; |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5527 | link->pmp = pmp; |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5528 | link->active_tag = ATA_TAG_POISON; |
| 5529 | link->hw_sata_spd_limit = UINT_MAX; |
| 5530 | |
| 5531 | /* can't use iterator, ap isn't initialized yet */ |
| 5532 | for (i = 0; i < ATA_MAX_DEVICES; i++) { |
| 5533 | struct ata_device *dev = &link->device[i]; |
| 5534 | |
| 5535 | dev->link = link; |
| 5536 | dev->devno = dev - link->device; |
Tejun Heo | 110f66d | 2009-09-16 04:17:28 +0900 | [diff] [blame] | 5537 | #ifdef CONFIG_ATA_ACPI |
| 5538 | dev->gtf_filter = ata_acpi_gtf_filter; |
| 5539 | #endif |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5540 | ata_dev_init(dev); |
| 5541 | } |
| 5542 | } |
| 5543 | |
| 5544 | /** |
| 5545 | * sata_link_init_spd - Initialize link->sata_spd_limit |
| 5546 | * @link: Link to configure sata_spd_limit for |
| 5547 | * |
| 5548 | * Initialize @link->[hw_]sata_spd_limit to the currently |
| 5549 | * configured value. |
| 5550 | * |
| 5551 | * LOCKING: |
| 5552 | * Kernel thread context (may sleep). |
| 5553 | * |
| 5554 | * RETURNS: |
| 5555 | * 0 on success, -errno on failure. |
| 5556 | */ |
Tejun Heo | fb7fd61 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 5557 | int sata_link_init_spd(struct ata_link *link) |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5558 | { |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 5559 | u8 spd; |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5560 | int rc; |
| 5561 | |
Tejun Heo | d127ea7 | 2008-07-31 16:09:34 +0900 | [diff] [blame] | 5562 | rc = sata_scr_read(link, SCR_CONTROL, &link->saved_scontrol); |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5563 | if (rc) |
| 5564 | return rc; |
| 5565 | |
Tejun Heo | d127ea7 | 2008-07-31 16:09:34 +0900 | [diff] [blame] | 5566 | spd = (link->saved_scontrol >> 4) & 0xf; |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5567 | if (spd) |
| 5568 | link->hw_sata_spd_limit &= (1 << spd) - 1; |
| 5569 | |
Tejun Heo | 05944bd | 2008-08-13 20:19:09 +0900 | [diff] [blame] | 5570 | ata_force_link_limits(link); |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 5571 | |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5572 | link->sata_spd_limit = link->hw_sata_spd_limit; |
| 5573 | |
| 5574 | return 0; |
| 5575 | } |
| 5576 | |
| 5577 | /** |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5578 | * ata_port_alloc - allocate and initialize basic ATA port resources |
| 5579 | * @host: ATA host this allocated port belongs to |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5580 | * |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5581 | * Allocate and initialize basic ATA port resources. |
| 5582 | * |
| 5583 | * RETURNS: |
| 5584 | * Allocate ATA port on success, NULL on failure. |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 5585 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5586 | * LOCKING: |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5587 | * Inherited from calling layer (may sleep). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5588 | */ |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5589 | struct ata_port *ata_port_alloc(struct ata_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5590 | { |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5591 | struct ata_port *ap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5592 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5593 | DPRINTK("ENTER\n"); |
| 5594 | |
| 5595 | ap = kzalloc(sizeof(*ap), GFP_KERNEL); |
| 5596 | if (!ap) |
| 5597 | return NULL; |
| 5598 | |
Tejun Heo | f4d6d00 | 2007-05-01 11:50:15 +0200 | [diff] [blame] | 5599 | ap->pflags |= ATA_PFLAG_INITIALIZING; |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5600 | ap->lock = &host->lock; |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5601 | ap->print_id = -1; |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5602 | ap->host = host; |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5603 | ap->dev = host->dev; |
Borislav Petkov | bd5d825 | 2006-06-11 23:17:01 -0400 | [diff] [blame] | 5604 | |
| 5605 | #if defined(ATA_VERBOSE_DEBUG) |
| 5606 | /* turn on all debugging levels */ |
| 5607 | ap->msg_enable = 0x00FF; |
| 5608 | #elif defined(ATA_DEBUG) |
| 5609 | 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] | 5610 | #else |
Borislav Petkov | 0dd4b21 | 2006-06-23 02:29:08 -0400 | [diff] [blame] | 5611 | ap->msg_enable = ATA_MSG_DRV | ATA_MSG_ERR | ATA_MSG_WARN; |
Borislav Petkov | bd5d825 | 2006-06-11 23:17:01 -0400 | [diff] [blame] | 5612 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5613 | |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 5614 | INIT_DELAYED_WORK(&ap->hotplug_task, ata_scsi_hotplug); |
| 5615 | INIT_WORK(&ap->scsi_rescan_task, ata_scsi_dev_rescan); |
Tejun Heo | a72ec4c | 2006-01-23 13:09:37 +0900 | [diff] [blame] | 5616 | INIT_LIST_HEAD(&ap->eh_done_q); |
Tejun Heo | c6cf9e9 | 2006-05-31 18:27:27 +0900 | [diff] [blame] | 5617 | init_waitqueue_head(&ap->eh_wait_q); |
Elias Oltmanns | 45fabbb | 2008-09-21 11:54:08 +0200 | [diff] [blame] | 5618 | init_completion(&ap->park_req_pending); |
Tejun Heo | 5ddf24c | 2007-07-16 14:29:41 +0900 | [diff] [blame] | 5619 | init_timer_deferrable(&ap->fastdrain_timer); |
| 5620 | ap->fastdrain_timer.function = ata_eh_fastdrain_timerfn; |
| 5621 | ap->fastdrain_timer.data = (unsigned long)ap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5622 | |
Tejun Heo | 838df62 | 2006-05-15 20:57:44 +0900 | [diff] [blame] | 5623 | ap->cbl = ATA_CBL_NONE; |
Tejun Heo | 838df62 | 2006-05-15 20:57:44 +0900 | [diff] [blame] | 5624 | |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5625 | ata_link_init(ap, &ap->link, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5626 | |
| 5627 | #ifdef ATA_IRQ_TRAP |
| 5628 | ap->stats.unhandled_irq = 1; |
| 5629 | ap->stats.idle_irq = 1; |
| 5630 | #endif |
Tejun Heo | 270390e | 2010-05-10 21:41:35 +0200 | [diff] [blame] | 5631 | ata_sff_port_init(ap); |
| 5632 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5633 | return ap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5634 | } |
| 5635 | |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 5636 | static void ata_host_release(struct device *gendev, void *res) |
| 5637 | { |
| 5638 | struct ata_host *host = dev_get_drvdata(gendev); |
| 5639 | int i; |
| 5640 | |
| 5641 | for (i = 0; i < host->n_ports; i++) { |
| 5642 | struct ata_port *ap = host->ports[i]; |
| 5643 | |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5644 | if (!ap) |
| 5645 | continue; |
| 5646 | |
Tejun Heo | 4911487 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5647 | if (ap->scsi_host) |
Tejun Heo | 1aa506e | 2007-03-09 19:36:12 +0900 | [diff] [blame] | 5648 | scsi_host_put(ap->scsi_host); |
| 5649 | |
Tejun Heo | 633273a3 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 5650 | kfree(ap->pmp_link); |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 5651 | kfree(ap->slave_link); |
Tejun Heo | 4911487 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5652 | kfree(ap); |
Tejun Heo | 1aa506e | 2007-03-09 19:36:12 +0900 | [diff] [blame] | 5653 | host->ports[i] = NULL; |
| 5654 | } |
| 5655 | |
Tejun Heo | 1aa56cc | 2007-02-27 22:33:21 +0900 | [diff] [blame] | 5656 | dev_set_drvdata(gendev, NULL); |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 5657 | } |
| 5658 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5659 | /** |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5660 | * ata_host_alloc - allocate and init basic ATA host resources |
| 5661 | * @dev: generic device this host is associated with |
| 5662 | * @max_ports: maximum number of ATA ports associated with this host |
| 5663 | * |
| 5664 | * Allocate and initialize basic ATA host resources. LLD calls |
| 5665 | * this function to allocate a host, initializes it fully and |
| 5666 | * attaches it using ata_host_register(). |
| 5667 | * |
| 5668 | * @max_ports ports are allocated and host->n_ports is |
| 5669 | * initialized to @max_ports. The caller is allowed to decrease |
| 5670 | * host->n_ports before calling ata_host_register(). The unused |
| 5671 | * ports will be automatically freed on registration. |
| 5672 | * |
| 5673 | * RETURNS: |
| 5674 | * Allocate ATA host on success, NULL on failure. |
| 5675 | * |
| 5676 | * LOCKING: |
| 5677 | * Inherited from calling layer (may sleep). |
| 5678 | */ |
| 5679 | struct ata_host *ata_host_alloc(struct device *dev, int max_ports) |
| 5680 | { |
| 5681 | struct ata_host *host; |
| 5682 | size_t sz; |
| 5683 | int i; |
| 5684 | |
| 5685 | DPRINTK("ENTER\n"); |
| 5686 | |
| 5687 | if (!devres_open_group(dev, NULL, GFP_KERNEL)) |
| 5688 | return NULL; |
| 5689 | |
| 5690 | /* alloc a container for our list of ATA ports (buses) */ |
| 5691 | sz = sizeof(struct ata_host) + (max_ports + 1) * sizeof(void *); |
| 5692 | /* alloc a container for our list of ATA ports (buses) */ |
| 5693 | host = devres_alloc(ata_host_release, sz, GFP_KERNEL); |
| 5694 | if (!host) |
| 5695 | goto err_out; |
| 5696 | |
| 5697 | devres_add(dev, host); |
| 5698 | dev_set_drvdata(dev, host); |
| 5699 | |
| 5700 | spin_lock_init(&host->lock); |
| 5701 | host->dev = dev; |
| 5702 | host->n_ports = max_ports; |
| 5703 | |
| 5704 | /* allocate ports bound to this host */ |
| 5705 | for (i = 0; i < max_ports; i++) { |
| 5706 | struct ata_port *ap; |
| 5707 | |
| 5708 | ap = ata_port_alloc(host); |
| 5709 | if (!ap) |
| 5710 | goto err_out; |
| 5711 | |
| 5712 | ap->port_no = i; |
| 5713 | host->ports[i] = ap; |
| 5714 | } |
| 5715 | |
| 5716 | devres_remove_group(dev, NULL); |
| 5717 | return host; |
| 5718 | |
| 5719 | err_out: |
| 5720 | devres_release_group(dev, NULL); |
| 5721 | return NULL; |
| 5722 | } |
| 5723 | |
| 5724 | /** |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5725 | * ata_host_alloc_pinfo - alloc host and init with port_info array |
| 5726 | * @dev: generic device this host is associated with |
| 5727 | * @ppi: array of ATA port_info to initialize host with |
| 5728 | * @n_ports: number of ATA ports attached to this host |
| 5729 | * |
| 5730 | * Allocate ATA host and initialize with info from @ppi. If NULL |
| 5731 | * terminated, @ppi may contain fewer entries than @n_ports. The |
| 5732 | * last entry will be used for the remaining ports. |
| 5733 | * |
| 5734 | * RETURNS: |
| 5735 | * Allocate ATA host on success, NULL on failure. |
| 5736 | * |
| 5737 | * LOCKING: |
| 5738 | * Inherited from calling layer (may sleep). |
| 5739 | */ |
| 5740 | struct ata_host *ata_host_alloc_pinfo(struct device *dev, |
| 5741 | const struct ata_port_info * const * ppi, |
| 5742 | int n_ports) |
| 5743 | { |
| 5744 | const struct ata_port_info *pi; |
| 5745 | struct ata_host *host; |
| 5746 | int i, j; |
| 5747 | |
| 5748 | host = ata_host_alloc(dev, n_ports); |
| 5749 | if (!host) |
| 5750 | return NULL; |
| 5751 | |
| 5752 | for (i = 0, j = 0, pi = NULL; i < host->n_ports; i++) { |
| 5753 | struct ata_port *ap = host->ports[i]; |
| 5754 | |
| 5755 | if (ppi[j]) |
| 5756 | pi = ppi[j++]; |
| 5757 | |
| 5758 | ap->pio_mask = pi->pio_mask; |
| 5759 | ap->mwdma_mask = pi->mwdma_mask; |
| 5760 | ap->udma_mask = pi->udma_mask; |
| 5761 | ap->flags |= pi->flags; |
Tejun Heo | 0c88758 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 5762 | ap->link.flags |= pi->link_flags; |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5763 | ap->ops = pi->port_ops; |
| 5764 | |
| 5765 | if (!host->ops && (pi->port_ops != &ata_dummy_port_ops)) |
| 5766 | host->ops = pi->port_ops; |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5767 | } |
| 5768 | |
| 5769 | return host; |
| 5770 | } |
| 5771 | |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 5772 | /** |
| 5773 | * ata_slave_link_init - initialize slave link |
| 5774 | * @ap: port to initialize slave link for |
| 5775 | * |
| 5776 | * Create and initialize slave link for @ap. This enables slave |
| 5777 | * link handling on the port. |
| 5778 | * |
| 5779 | * In libata, a port contains links and a link contains devices. |
| 5780 | * There is single host link but if a PMP is attached to it, |
| 5781 | * there can be multiple fan-out links. On SATA, there's usually |
| 5782 | * a single device connected to a link but PATA and SATA |
| 5783 | * controllers emulating TF based interface can have two - master |
| 5784 | * and slave. |
| 5785 | * |
| 5786 | * However, there are a few controllers which don't fit into this |
| 5787 | * abstraction too well - SATA controllers which emulate TF |
| 5788 | * interface with both master and slave devices but also have |
| 5789 | * separate SCR register sets for each device. These controllers |
| 5790 | * need separate links for physical link handling |
| 5791 | * (e.g. onlineness, link speed) but should be treated like a |
| 5792 | * traditional M/S controller for everything else (e.g. command |
| 5793 | * issue, softreset). |
| 5794 | * |
| 5795 | * slave_link is libata's way of handling this class of |
| 5796 | * controllers without impacting core layer too much. For |
| 5797 | * anything other than physical link handling, the default host |
| 5798 | * link is used for both master and slave. For physical link |
| 5799 | * handling, separate @ap->slave_link is used. All dirty details |
| 5800 | * are implemented inside libata core layer. From LLD's POV, the |
| 5801 | * only difference is that prereset, hardreset and postreset are |
| 5802 | * called once more for the slave link, so the reset sequence |
| 5803 | * looks like the following. |
| 5804 | * |
| 5805 | * prereset(M) -> prereset(S) -> hardreset(M) -> hardreset(S) -> |
| 5806 | * softreset(M) -> postreset(M) -> postreset(S) |
| 5807 | * |
| 5808 | * Note that softreset is called only for the master. Softreset |
| 5809 | * resets both M/S by definition, so SRST on master should handle |
| 5810 | * both (the standard method will work just fine). |
| 5811 | * |
| 5812 | * LOCKING: |
| 5813 | * Should be called before host is registered. |
| 5814 | * |
| 5815 | * RETURNS: |
| 5816 | * 0 on success, -errno on failure. |
| 5817 | */ |
| 5818 | int ata_slave_link_init(struct ata_port *ap) |
| 5819 | { |
| 5820 | struct ata_link *link; |
| 5821 | |
| 5822 | WARN_ON(ap->slave_link); |
| 5823 | WARN_ON(ap->flags & ATA_FLAG_PMP); |
| 5824 | |
| 5825 | link = kzalloc(sizeof(*link), GFP_KERNEL); |
| 5826 | if (!link) |
| 5827 | return -ENOMEM; |
| 5828 | |
| 5829 | ata_link_init(ap, link, 1); |
| 5830 | ap->slave_link = link; |
| 5831 | return 0; |
| 5832 | } |
| 5833 | |
Tejun Heo | 32ebbc0 | 2007-11-08 13:09:00 +0900 | [diff] [blame] | 5834 | static void ata_host_stop(struct device *gendev, void *res) |
| 5835 | { |
| 5836 | struct ata_host *host = dev_get_drvdata(gendev); |
| 5837 | int i; |
| 5838 | |
| 5839 | WARN_ON(!(host->flags & ATA_HOST_STARTED)); |
| 5840 | |
| 5841 | for (i = 0; i < host->n_ports; i++) { |
| 5842 | struct ata_port *ap = host->ports[i]; |
| 5843 | |
| 5844 | if (ap->ops->port_stop) |
| 5845 | ap->ops->port_stop(ap); |
| 5846 | } |
| 5847 | |
| 5848 | if (host->ops->host_stop) |
| 5849 | host->ops->host_stop(host); |
| 5850 | } |
| 5851 | |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5852 | /** |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 5853 | * ata_finalize_port_ops - finalize ata_port_operations |
| 5854 | * @ops: ata_port_operations to finalize |
| 5855 | * |
| 5856 | * An ata_port_operations can inherit from another ops and that |
| 5857 | * ops can again inherit from another. This can go on as many |
| 5858 | * times as necessary as long as there is no loop in the |
| 5859 | * inheritance chain. |
| 5860 | * |
| 5861 | * Ops tables are finalized when the host is started. NULL or |
| 5862 | * unspecified entries are inherited from the closet ancestor |
| 5863 | * which has the method and the entry is populated with it. |
| 5864 | * After finalization, the ops table directly points to all the |
| 5865 | * methods and ->inherits is no longer necessary and cleared. |
| 5866 | * |
| 5867 | * Using ATA_OP_NULL, inheriting ops can force a method to NULL. |
| 5868 | * |
| 5869 | * LOCKING: |
| 5870 | * None. |
| 5871 | */ |
| 5872 | static void ata_finalize_port_ops(struct ata_port_operations *ops) |
| 5873 | { |
Pradeep Singh Rautela | 2da6765 | 2008-05-29 23:28:14 +0530 | [diff] [blame] | 5874 | static DEFINE_SPINLOCK(lock); |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 5875 | const struct ata_port_operations *cur; |
| 5876 | void **begin = (void **)ops; |
| 5877 | void **end = (void **)&ops->inherits; |
| 5878 | void **pp; |
| 5879 | |
| 5880 | if (!ops || !ops->inherits) |
| 5881 | return; |
| 5882 | |
| 5883 | spin_lock(&lock); |
| 5884 | |
| 5885 | for (cur = ops->inherits; cur; cur = cur->inherits) { |
| 5886 | void **inherit = (void **)cur; |
| 5887 | |
| 5888 | for (pp = begin; pp < end; pp++, inherit++) |
| 5889 | if (!*pp) |
| 5890 | *pp = *inherit; |
| 5891 | } |
| 5892 | |
| 5893 | for (pp = begin; pp < end; pp++) |
| 5894 | if (IS_ERR(*pp)) |
| 5895 | *pp = NULL; |
| 5896 | |
| 5897 | ops->inherits = NULL; |
| 5898 | |
| 5899 | spin_unlock(&lock); |
| 5900 | } |
| 5901 | |
| 5902 | /** |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5903 | * ata_host_start - start and freeze ports of an ATA host |
| 5904 | * @host: ATA host to start ports for |
| 5905 | * |
| 5906 | * Start and then freeze ports of @host. Started status is |
| 5907 | * recorded in host->flags, so this function can be called |
| 5908 | * multiple times. Ports are guaranteed to get started only |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5909 | * once. If host->ops isn't initialized yet, its set to the |
| 5910 | * first non-dummy port ops. |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5911 | * |
| 5912 | * LOCKING: |
| 5913 | * Inherited from calling layer (may sleep). |
| 5914 | * |
| 5915 | * RETURNS: |
| 5916 | * 0 if all ports are started successfully, -errno otherwise. |
| 5917 | */ |
| 5918 | int ata_host_start(struct ata_host *host) |
| 5919 | { |
Tejun Heo | 32ebbc0 | 2007-11-08 13:09:00 +0900 | [diff] [blame] | 5920 | int have_stop = 0; |
| 5921 | void *start_dr = NULL; |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5922 | int i, rc; |
| 5923 | |
| 5924 | if (host->flags & ATA_HOST_STARTED) |
| 5925 | return 0; |
| 5926 | |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 5927 | ata_finalize_port_ops(host->ops); |
| 5928 | |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5929 | for (i = 0; i < host->n_ports; i++) { |
| 5930 | struct ata_port *ap = host->ports[i]; |
| 5931 | |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 5932 | ata_finalize_port_ops(ap->ops); |
| 5933 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5934 | if (!host->ops && !ata_port_is_dummy(ap)) |
| 5935 | host->ops = ap->ops; |
| 5936 | |
Tejun Heo | 32ebbc0 | 2007-11-08 13:09:00 +0900 | [diff] [blame] | 5937 | if (ap->ops->port_stop) |
| 5938 | have_stop = 1; |
| 5939 | } |
| 5940 | |
| 5941 | if (host->ops->host_stop) |
| 5942 | have_stop = 1; |
| 5943 | |
| 5944 | if (have_stop) { |
| 5945 | start_dr = devres_alloc(ata_host_stop, 0, GFP_KERNEL); |
| 5946 | if (!start_dr) |
| 5947 | return -ENOMEM; |
| 5948 | } |
| 5949 | |
| 5950 | for (i = 0; i < host->n_ports; i++) { |
| 5951 | struct ata_port *ap = host->ports[i]; |
| 5952 | |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5953 | if (ap->ops->port_start) { |
| 5954 | rc = ap->ops->port_start(ap); |
| 5955 | if (rc) { |
Alan Cox | 0f9fe9b | 2007-11-30 15:23:16 +0000 | [diff] [blame] | 5956 | if (rc != -ENODEV) |
Andrew Morton | 0f75774 | 2008-01-10 14:33:09 -0800 | [diff] [blame] | 5957 | dev_printk(KERN_ERR, host->dev, |
| 5958 | "failed to start port %d " |
| 5959 | "(errno=%d)\n", i, rc); |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5960 | goto err_out; |
| 5961 | } |
| 5962 | } |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5963 | ata_eh_freeze_port(ap); |
| 5964 | } |
| 5965 | |
Tejun Heo | 32ebbc0 | 2007-11-08 13:09:00 +0900 | [diff] [blame] | 5966 | if (start_dr) |
| 5967 | devres_add(host->dev, start_dr); |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5968 | host->flags |= ATA_HOST_STARTED; |
| 5969 | return 0; |
| 5970 | |
| 5971 | err_out: |
| 5972 | while (--i >= 0) { |
| 5973 | struct ata_port *ap = host->ports[i]; |
| 5974 | |
| 5975 | if (ap->ops->port_stop) |
| 5976 | ap->ops->port_stop(ap); |
| 5977 | } |
Tejun Heo | 32ebbc0 | 2007-11-08 13:09:00 +0900 | [diff] [blame] | 5978 | devres_free(start_dr); |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 5979 | return rc; |
| 5980 | } |
| 5981 | |
| 5982 | /** |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5983 | * ata_sas_host_init - Initialize a host struct |
| 5984 | * @host: host to initialize |
| 5985 | * @dev: device host is attached to |
| 5986 | * @flags: host flags |
| 5987 | * @ops: port_ops |
Brian King | b03732f | 2006-08-07 14:27:10 -0500 | [diff] [blame] | 5988 | * |
| 5989 | * LOCKING: |
| 5990 | * PCI/etc. bus probe sem. |
| 5991 | * |
| 5992 | */ |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 5993 | /* KILLME - the only user left is ipr */ |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5994 | void ata_host_init(struct ata_host *host, struct device *dev, |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 5995 | unsigned long flags, struct ata_port_operations *ops) |
Brian King | b03732f | 2006-08-07 14:27:10 -0500 | [diff] [blame] | 5996 | { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 5997 | spin_lock_init(&host->lock); |
| 5998 | host->dev = dev; |
| 5999 | host->flags = flags; |
| 6000 | host->ops = ops; |
Brian King | b03732f | 2006-08-07 14:27:10 -0500 | [diff] [blame] | 6001 | } |
| 6002 | |
Arjan van de Ven | 7931805 | 2009-01-04 05:32:28 -0800 | [diff] [blame] | 6003 | |
| 6004 | static void async_port_probe(void *data, async_cookie_t cookie) |
| 6005 | { |
| 6006 | int rc; |
| 6007 | struct ata_port *ap = data; |
Arjan van de Ven | 886ad09 | 2009-01-09 15:54:07 -0800 | [diff] [blame] | 6008 | |
| 6009 | /* |
| 6010 | * If we're not allowed to scan this host in parallel, |
| 6011 | * we need to wait until all previous scans have completed |
| 6012 | * before going further. |
Arjan van de Ven | fa853a4 | 2009-01-10 10:18:44 -0800 | [diff] [blame] | 6013 | * Jeff Garzik says this is only within a controller, so we |
| 6014 | * don't need to wait for port 0, only for later ports. |
Arjan van de Ven | 886ad09 | 2009-01-09 15:54:07 -0800 | [diff] [blame] | 6015 | */ |
Arjan van de Ven | fa853a4 | 2009-01-10 10:18:44 -0800 | [diff] [blame] | 6016 | if (!(ap->host->flags & ATA_HOST_PARALLEL_SCAN) && ap->port_no != 0) |
Arjan van de Ven | 886ad09 | 2009-01-09 15:54:07 -0800 | [diff] [blame] | 6017 | async_synchronize_cookie(cookie); |
| 6018 | |
Arjan van de Ven | 7931805 | 2009-01-04 05:32:28 -0800 | [diff] [blame] | 6019 | /* probe */ |
| 6020 | if (ap->ops->error_handler) { |
| 6021 | struct ata_eh_info *ehi = &ap->link.eh_info; |
| 6022 | unsigned long flags; |
| 6023 | |
Arjan van de Ven | 7931805 | 2009-01-04 05:32:28 -0800 | [diff] [blame] | 6024 | /* kick EH for boot probing */ |
| 6025 | spin_lock_irqsave(ap->lock, flags); |
| 6026 | |
| 6027 | ehi->probe_mask |= ATA_ALL_DEVICES; |
| 6028 | ehi->action |= ATA_EH_RESET | ATA_EH_LPM; |
| 6029 | ehi->flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET; |
| 6030 | |
| 6031 | ap->pflags &= ~ATA_PFLAG_INITIALIZING; |
| 6032 | ap->pflags |= ATA_PFLAG_LOADING; |
| 6033 | ata_port_schedule_eh(ap); |
| 6034 | |
| 6035 | spin_unlock_irqrestore(ap->lock, flags); |
| 6036 | |
| 6037 | /* wait for EH to finish */ |
| 6038 | ata_port_wait_eh(ap); |
| 6039 | } else { |
| 6040 | DPRINTK("ata%u: bus probe begin\n", ap->print_id); |
| 6041 | rc = ata_bus_probe(ap); |
| 6042 | DPRINTK("ata%u: bus probe end\n", ap->print_id); |
| 6043 | |
| 6044 | if (rc) { |
| 6045 | /* FIXME: do something useful here? |
| 6046 | * Current libata behavior will |
| 6047 | * tear down everything when |
| 6048 | * the module is removed |
| 6049 | * or the h/w is unplugged. |
| 6050 | */ |
| 6051 | } |
| 6052 | } |
Arjan van de Ven | f29d3b2 | 2009-01-05 15:07:07 -0800 | [diff] [blame] | 6053 | |
| 6054 | /* in order to keep device order, we need to synchronize at this point */ |
| 6055 | async_synchronize_cookie(cookie); |
| 6056 | |
| 6057 | ata_scsi_scan_host(ap, 1); |
| 6058 | |
Arjan van de Ven | 7931805 | 2009-01-04 05:32:28 -0800 | [diff] [blame] | 6059 | } |
Brian King | b03732f | 2006-08-07 14:27:10 -0500 | [diff] [blame] | 6060 | /** |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6061 | * ata_host_register - register initialized ATA host |
| 6062 | * @host: ATA host to register |
| 6063 | * @sht: template for SCSI host |
Jeff Garzik | 0cba632 | 2005-05-30 19:49:12 -0400 | [diff] [blame] | 6064 | * |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6065 | * Register initialized ATA host. @host is allocated using |
| 6066 | * ata_host_alloc() and fully initialized by LLD. This function |
| 6067 | * starts ports, registers @host with ATA and SCSI layers and |
| 6068 | * probe registered devices. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6069 | * |
| 6070 | * LOCKING: |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6071 | * Inherited from calling layer (may sleep). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6072 | * |
| 6073 | * RETURNS: |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6074 | * 0 on success, -errno otherwise. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6075 | */ |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6076 | 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] | 6077 | { |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6078 | int i, rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6079 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6080 | /* host must have been started */ |
| 6081 | if (!(host->flags & ATA_HOST_STARTED)) { |
| 6082 | dev_printk(KERN_ERR, host->dev, |
| 6083 | "BUG: trying to register unstarted host\n"); |
| 6084 | WARN_ON(1); |
| 6085 | return -EINVAL; |
Alan Cox | 02f076a | 2006-09-26 17:35:32 +0100 | [diff] [blame] | 6086 | } |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 6087 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6088 | /* Blow away unused ports. This happens when LLD can't |
| 6089 | * determine the exact number of ports to allocate at |
| 6090 | * allocation time. |
| 6091 | */ |
| 6092 | for (i = host->n_ports; host->ports[i]; i++) |
| 6093 | kfree(host->ports[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6094 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6095 | /* give ports names and add SCSI hosts */ |
| 6096 | for (i = 0; i < host->n_ports; i++) |
| 6097 | host->ports[i]->print_id = ata_print_id++; |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 6098 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6099 | rc = ata_scsi_add_hosts(host, sht); |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 6100 | if (rc) |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6101 | return rc; |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 6102 | |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 6103 | /* associate with ACPI nodes */ |
| 6104 | ata_acpi_associate(host); |
| 6105 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6106 | /* set cable, sata_spd_limit and report */ |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 6107 | for (i = 0; i < host->n_ports; i++) { |
| 6108 | struct ata_port *ap = host->ports[i]; |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6109 | unsigned long xfer_mask; |
| 6110 | |
| 6111 | /* set SATA cable type if still unset */ |
| 6112 | if (ap->cbl == ATA_CBL_NONE && (ap->flags & ATA_FLAG_SATA)) |
| 6113 | ap->cbl = ATA_CBL_SATA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6114 | |
Tejun Heo | 5a04bf4 | 2006-05-31 18:27:38 +0900 | [diff] [blame] | 6115 | /* init sata_spd_limit to the current value */ |
Tejun Heo | 4fb37a2 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 6116 | sata_link_init_spd(&ap->link); |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 6117 | if (ap->slave_link) |
| 6118 | sata_link_init_spd(ap->slave_link); |
Tejun Heo | 5a04bf4 | 2006-05-31 18:27:38 +0900 | [diff] [blame] | 6119 | |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 6120 | /* print per-port info to dmesg */ |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6121 | xfer_mask = ata_pack_xfermask(ap->pio_mask, ap->mwdma_mask, |
| 6122 | ap->udma_mask); |
| 6123 | |
Tejun Heo | abf6e8e | 2007-10-09 14:57:25 +0900 | [diff] [blame] | 6124 | if (!ata_port_is_dummy(ap)) { |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 6125 | ata_port_printk(ap, KERN_INFO, |
| 6126 | "%cATA max %s %s\n", |
Tejun Heo | a16abc0 | 2007-05-21 18:33:47 +0200 | [diff] [blame] | 6127 | (ap->flags & ATA_FLAG_SATA) ? 'S' : 'P', |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6128 | ata_mode_string(xfer_mask), |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 6129 | ap->link.eh_info.desc); |
Tejun Heo | abf6e8e | 2007-10-09 14:57:25 +0900 | [diff] [blame] | 6130 | ata_ehi_clear_desc(&ap->link.eh_info); |
| 6131 | } else |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6132 | ata_port_printk(ap, KERN_INFO, "DUMMY\n"); |
| 6133 | } |
| 6134 | |
Vegard Nossum | f600535 | 2009-04-08 18:19:39 +0200 | [diff] [blame] | 6135 | /* perform each probe asynchronously */ |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6136 | for (i = 0; i < host->n_ports; i++) { |
| 6137 | struct ata_port *ap = host->ports[i]; |
Arjan van de Ven | 7931805 | 2009-01-04 05:32:28 -0800 | [diff] [blame] | 6138 | async_schedule(async_port_probe, ap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6139 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6140 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6141 | return 0; |
| 6142 | } |
| 6143 | |
| 6144 | /** |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6145 | * ata_host_activate - start host, request IRQ and register it |
| 6146 | * @host: target ATA host |
| 6147 | * @irq: IRQ to request |
| 6148 | * @irq_handler: irq_handler used when requesting IRQ |
| 6149 | * @irq_flags: irq_flags used when requesting IRQ |
| 6150 | * @sht: scsi_host_template to use when registering the host |
| 6151 | * |
| 6152 | * After allocating an ATA host and initializing it, most libata |
| 6153 | * LLDs perform three steps to activate the host - start host, |
| 6154 | * request IRQ and register it. This helper takes necessasry |
| 6155 | * arguments and performs the three steps in one go. |
| 6156 | * |
Paul Mundt | 3d46b2e | 2007-11-08 11:14:56 +0900 | [diff] [blame] | 6157 | * An invalid IRQ skips the IRQ registration and expects the host to |
| 6158 | * have set polling mode on the port. In this case, @irq_handler |
| 6159 | * should be NULL. |
| 6160 | * |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6161 | * LOCKING: |
| 6162 | * Inherited from calling layer (may sleep). |
| 6163 | * |
| 6164 | * RETURNS: |
| 6165 | * 0 on success, -errno otherwise. |
| 6166 | */ |
| 6167 | int ata_host_activate(struct ata_host *host, int irq, |
| 6168 | irq_handler_t irq_handler, unsigned long irq_flags, |
| 6169 | struct scsi_host_template *sht) |
| 6170 | { |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 6171 | int i, rc; |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6172 | |
| 6173 | rc = ata_host_start(host); |
| 6174 | if (rc) |
| 6175 | return rc; |
| 6176 | |
Paul Mundt | 3d46b2e | 2007-11-08 11:14:56 +0900 | [diff] [blame] | 6177 | /* Special case for polling mode */ |
| 6178 | if (!irq) { |
| 6179 | WARN_ON(irq_handler); |
| 6180 | return ata_host_register(host, sht); |
| 6181 | } |
| 6182 | |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6183 | rc = devm_request_irq(host->dev, irq, irq_handler, irq_flags, |
| 6184 | dev_driver_string(host->dev), host); |
| 6185 | if (rc) |
| 6186 | return rc; |
| 6187 | |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 6188 | for (i = 0; i < host->n_ports; i++) |
| 6189 | ata_port_desc(host->ports[i], "irq %d", irq); |
Tejun Heo | 4031826 | 2007-07-03 01:38:47 +0900 | [diff] [blame] | 6190 | |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6191 | rc = ata_host_register(host, sht); |
| 6192 | /* if failed, just free the IRQ and leave ports alone */ |
| 6193 | if (rc) |
| 6194 | devm_free_irq(host->dev, irq, host); |
| 6195 | |
| 6196 | return rc; |
| 6197 | } |
| 6198 | |
| 6199 | /** |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 6200 | * ata_port_detach - Detach ATA port in prepration of device removal |
| 6201 | * @ap: ATA port to be detached |
| 6202 | * |
| 6203 | * Detach all ATA devices and the associated SCSI devices of @ap; |
| 6204 | * then, remove the associated SCSI host. @ap is guaranteed to |
| 6205 | * be quiescent on return from this function. |
| 6206 | * |
| 6207 | * LOCKING: |
| 6208 | * Kernel thread context (may sleep). |
| 6209 | */ |
Adrian Bunk | 741b776 | 2007-10-24 18:23:06 +0200 | [diff] [blame] | 6210 | static void ata_port_detach(struct ata_port *ap) |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 6211 | { |
| 6212 | unsigned long flags; |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 6213 | |
| 6214 | if (!ap->ops->error_handler) |
Tejun Heo | c3cf30a | 2006-08-05 03:59:11 +0900 | [diff] [blame] | 6215 | goto skip_eh; |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 6216 | |
| 6217 | /* tell EH we're leaving & flush EH */ |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 6218 | spin_lock_irqsave(ap->lock, flags); |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 6219 | ap->pflags |= ATA_PFLAG_UNLOADING; |
Tejun Heo | ece180d | 2008-11-03 20:04:37 +0900 | [diff] [blame] | 6220 | ata_port_schedule_eh(ap); |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 6221 | spin_unlock_irqrestore(ap->lock, flags); |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 6222 | |
Tejun Heo | ece180d | 2008-11-03 20:04:37 +0900 | [diff] [blame] | 6223 | /* wait till EH commits suicide */ |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 6224 | ata_port_wait_eh(ap); |
| 6225 | |
Tejun Heo | ece180d | 2008-11-03 20:04:37 +0900 | [diff] [blame] | 6226 | /* it better be dead now */ |
| 6227 | WARN_ON(!(ap->pflags & ATA_PFLAG_UNLOADED)); |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 6228 | |
Oleg Nesterov | 45a66c1 | 2007-07-09 11:46:13 -0700 | [diff] [blame] | 6229 | cancel_rearming_delayed_work(&ap->hotplug_task); |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 6230 | |
Tejun Heo | c3cf30a | 2006-08-05 03:59:11 +0900 | [diff] [blame] | 6231 | skip_eh: |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 6232 | /* remove the associated SCSI host */ |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 6233 | scsi_remove_host(ap->scsi_host); |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 6234 | } |
| 6235 | |
| 6236 | /** |
Tejun Heo | 0529c15 | 2007-01-20 16:00:26 +0900 | [diff] [blame] | 6237 | * ata_host_detach - Detach all ports of an ATA host |
| 6238 | * @host: Host to detach |
| 6239 | * |
| 6240 | * Detach all ports of @host. |
| 6241 | * |
| 6242 | * LOCKING: |
| 6243 | * Kernel thread context (may sleep). |
| 6244 | */ |
| 6245 | void ata_host_detach(struct ata_host *host) |
| 6246 | { |
| 6247 | int i; |
| 6248 | |
| 6249 | for (i = 0; i < host->n_ports; i++) |
| 6250 | ata_port_detach(host->ports[i]); |
Tejun Heo | 562f0c2 | 2007-12-15 15:05:01 +0900 | [diff] [blame] | 6251 | |
| 6252 | /* the host is dead now, dissociate ACPI */ |
| 6253 | ata_acpi_dissociate(host); |
Tejun Heo | 0529c15 | 2007-01-20 16:00:26 +0900 | [diff] [blame] | 6254 | } |
| 6255 | |
Jeff Garzik | 374b187 | 2005-08-30 05:42:52 -0400 | [diff] [blame] | 6256 | #ifdef CONFIG_PCI |
| 6257 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 6258 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6259 | * ata_pci_remove_one - PCI layer callback for device removal |
| 6260 | * @pdev: PCI device that was removed |
| 6261 | * |
Tejun Heo | b878ca5 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 6262 | * PCI layer indicates to libata via this hook that hot-unplug or |
| 6263 | * module unload event has occurred. Detach all ports. Resource |
| 6264 | * release is handled via devres. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6265 | * |
| 6266 | * LOCKING: |
| 6267 | * Inherited from PCI layer (may sleep). |
| 6268 | */ |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 6269 | void ata_pci_remove_one(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6270 | { |
Jeff Garzik | 2855568 | 2007-10-11 17:12:35 -0400 | [diff] [blame] | 6271 | struct device *dev = &pdev->dev; |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 6272 | struct ata_host *host = dev_get_drvdata(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6273 | |
Tejun Heo | b878ca5 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 6274 | ata_host_detach(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6275 | } |
| 6276 | |
| 6277 | /* move to PCI subsystem */ |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 6278 | 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] | 6279 | { |
| 6280 | unsigned long tmp = 0; |
| 6281 | |
| 6282 | switch (bits->width) { |
| 6283 | case 1: { |
| 6284 | u8 tmp8 = 0; |
| 6285 | pci_read_config_byte(pdev, bits->reg, &tmp8); |
| 6286 | tmp = tmp8; |
| 6287 | break; |
| 6288 | } |
| 6289 | case 2: { |
| 6290 | u16 tmp16 = 0; |
| 6291 | pci_read_config_word(pdev, bits->reg, &tmp16); |
| 6292 | tmp = tmp16; |
| 6293 | break; |
| 6294 | } |
| 6295 | case 4: { |
| 6296 | u32 tmp32 = 0; |
| 6297 | pci_read_config_dword(pdev, bits->reg, &tmp32); |
| 6298 | tmp = tmp32; |
| 6299 | break; |
| 6300 | } |
| 6301 | |
| 6302 | default: |
| 6303 | return -EINVAL; |
| 6304 | } |
| 6305 | |
| 6306 | tmp &= bits->mask; |
| 6307 | |
| 6308 | return (tmp == bits->val) ? 1 : 0; |
| 6309 | } |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 6310 | |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 6311 | #ifdef CONFIG_PM |
Tejun Heo | 3c5100c | 2006-07-26 16:58:33 +0900 | [diff] [blame] | 6312 | 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] | 6313 | { |
| 6314 | pci_save_state(pdev); |
Tejun Heo | 4c90d97 | 2007-02-20 18:14:48 +0900 | [diff] [blame] | 6315 | pci_disable_device(pdev); |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 6316 | |
Rafael J. Wysocki | 3a2d5b7 | 2008-02-23 19:13:25 +0100 | [diff] [blame] | 6317 | if (mesg.event & PM_EVENT_SLEEP) |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 6318 | pci_set_power_state(pdev, PCI_D3hot); |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 6319 | } |
| 6320 | |
Tejun Heo | 553c4aa | 2006-12-26 19:39:50 +0900 | [diff] [blame] | 6321 | int ata_pci_device_do_resume(struct pci_dev *pdev) |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 6322 | { |
Tejun Heo | 553c4aa | 2006-12-26 19:39:50 +0900 | [diff] [blame] | 6323 | int rc; |
| 6324 | |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 6325 | pci_set_power_state(pdev, PCI_D0); |
| 6326 | pci_restore_state(pdev); |
Tejun Heo | 553c4aa | 2006-12-26 19:39:50 +0900 | [diff] [blame] | 6327 | |
Tejun Heo | b878ca5 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 6328 | rc = pcim_enable_device(pdev); |
Tejun Heo | 553c4aa | 2006-12-26 19:39:50 +0900 | [diff] [blame] | 6329 | if (rc) { |
| 6330 | dev_printk(KERN_ERR, &pdev->dev, |
| 6331 | "failed to enable device after resume (%d)\n", rc); |
| 6332 | return rc; |
| 6333 | } |
| 6334 | |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 6335 | pci_set_master(pdev); |
Tejun Heo | 553c4aa | 2006-12-26 19:39:50 +0900 | [diff] [blame] | 6336 | return 0; |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 6337 | } |
| 6338 | |
Tejun Heo | 3c5100c | 2006-07-26 16:58:33 +0900 | [diff] [blame] | 6339 | 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] | 6340 | { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 6341 | struct ata_host *host = dev_get_drvdata(&pdev->dev); |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 6342 | int rc = 0; |
| 6343 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 6344 | rc = ata_host_suspend(host, mesg); |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 6345 | if (rc) |
| 6346 | return rc; |
| 6347 | |
Tejun Heo | 3c5100c | 2006-07-26 16:58:33 +0900 | [diff] [blame] | 6348 | ata_pci_device_do_suspend(pdev, mesg); |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 6349 | |
| 6350 | return 0; |
| 6351 | } |
| 6352 | |
| 6353 | int ata_pci_device_resume(struct pci_dev *pdev) |
| 6354 | { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 6355 | struct ata_host *host = dev_get_drvdata(&pdev->dev); |
Tejun Heo | 553c4aa | 2006-12-26 19:39:50 +0900 | [diff] [blame] | 6356 | int rc; |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 6357 | |
Tejun Heo | 553c4aa | 2006-12-26 19:39:50 +0900 | [diff] [blame] | 6358 | rc = ata_pci_device_do_resume(pdev); |
| 6359 | if (rc == 0) |
| 6360 | ata_host_resume(host); |
| 6361 | return rc; |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 6362 | } |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 6363 | #endif /* CONFIG_PM */ |
| 6364 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6365 | #endif /* CONFIG_PCI */ |
| 6366 | |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 6367 | static int __init ata_parse_force_one(char **cur, |
| 6368 | struct ata_force_ent *force_ent, |
| 6369 | const char **reason) |
| 6370 | { |
| 6371 | /* FIXME: Currently, there's no way to tag init const data and |
| 6372 | * using __initdata causes build failure on some versions of |
| 6373 | * gcc. Once __initdataconst is implemented, add const to the |
| 6374 | * following structure. |
| 6375 | */ |
| 6376 | static struct ata_force_param force_tbl[] __initdata = { |
| 6377 | { "40c", .cbl = ATA_CBL_PATA40 }, |
| 6378 | { "80c", .cbl = ATA_CBL_PATA80 }, |
| 6379 | { "short40c", .cbl = ATA_CBL_PATA40_SHORT }, |
| 6380 | { "unk", .cbl = ATA_CBL_PATA_UNK }, |
| 6381 | { "ign", .cbl = ATA_CBL_PATA_IGN }, |
| 6382 | { "sata", .cbl = ATA_CBL_SATA }, |
| 6383 | { "1.5Gbps", .spd_limit = 1 }, |
| 6384 | { "3.0Gbps", .spd_limit = 2 }, |
| 6385 | { "noncq", .horkage_on = ATA_HORKAGE_NONCQ }, |
| 6386 | { "ncq", .horkage_off = ATA_HORKAGE_NONCQ }, |
Tejun Heo | 43c9c59 | 2010-05-23 12:59:11 +0200 | [diff] [blame] | 6387 | { "dump_id", .horkage_on = ATA_HORKAGE_DUMP_ID }, |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 6388 | { "pio0", .xfer_mask = 1 << (ATA_SHIFT_PIO + 0) }, |
| 6389 | { "pio1", .xfer_mask = 1 << (ATA_SHIFT_PIO + 1) }, |
| 6390 | { "pio2", .xfer_mask = 1 << (ATA_SHIFT_PIO + 2) }, |
| 6391 | { "pio3", .xfer_mask = 1 << (ATA_SHIFT_PIO + 3) }, |
| 6392 | { "pio4", .xfer_mask = 1 << (ATA_SHIFT_PIO + 4) }, |
| 6393 | { "pio5", .xfer_mask = 1 << (ATA_SHIFT_PIO + 5) }, |
| 6394 | { "pio6", .xfer_mask = 1 << (ATA_SHIFT_PIO + 6) }, |
| 6395 | { "mwdma0", .xfer_mask = 1 << (ATA_SHIFT_MWDMA + 0) }, |
| 6396 | { "mwdma1", .xfer_mask = 1 << (ATA_SHIFT_MWDMA + 1) }, |
| 6397 | { "mwdma2", .xfer_mask = 1 << (ATA_SHIFT_MWDMA + 2) }, |
| 6398 | { "mwdma3", .xfer_mask = 1 << (ATA_SHIFT_MWDMA + 3) }, |
| 6399 | { "mwdma4", .xfer_mask = 1 << (ATA_SHIFT_MWDMA + 4) }, |
| 6400 | { "udma0", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 0) }, |
| 6401 | { "udma16", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 0) }, |
| 6402 | { "udma/16", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 0) }, |
| 6403 | { "udma1", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 1) }, |
| 6404 | { "udma25", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 1) }, |
| 6405 | { "udma/25", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 1) }, |
| 6406 | { "udma2", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 2) }, |
| 6407 | { "udma33", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 2) }, |
| 6408 | { "udma/33", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 2) }, |
| 6409 | { "udma3", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 3) }, |
| 6410 | { "udma44", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 3) }, |
| 6411 | { "udma/44", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 3) }, |
| 6412 | { "udma4", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 4) }, |
| 6413 | { "udma66", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 4) }, |
| 6414 | { "udma/66", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 4) }, |
| 6415 | { "udma5", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 5) }, |
| 6416 | { "udma100", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 5) }, |
| 6417 | { "udma/100", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 5) }, |
| 6418 | { "udma6", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 6) }, |
| 6419 | { "udma133", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 6) }, |
| 6420 | { "udma/133", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 6) }, |
| 6421 | { "udma7", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 7) }, |
Tejun Heo | 05944bd | 2008-08-13 20:19:09 +0900 | [diff] [blame] | 6422 | { "nohrst", .lflags = ATA_LFLAG_NO_HRST }, |
| 6423 | { "nosrst", .lflags = ATA_LFLAG_NO_SRST }, |
| 6424 | { "norst", .lflags = ATA_LFLAG_NO_HRST | ATA_LFLAG_NO_SRST }, |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 6425 | }; |
| 6426 | char *start = *cur, *p = *cur; |
| 6427 | char *id, *val, *endp; |
| 6428 | const struct ata_force_param *match_fp = NULL; |
| 6429 | int nr_matches = 0, i; |
| 6430 | |
| 6431 | /* find where this param ends and update *cur */ |
| 6432 | while (*p != '\0' && *p != ',') |
| 6433 | p++; |
| 6434 | |
| 6435 | if (*p == '\0') |
| 6436 | *cur = p; |
| 6437 | else |
| 6438 | *cur = p + 1; |
| 6439 | |
| 6440 | *p = '\0'; |
| 6441 | |
| 6442 | /* parse */ |
| 6443 | p = strchr(start, ':'); |
| 6444 | if (!p) { |
| 6445 | val = strstrip(start); |
| 6446 | goto parse_val; |
| 6447 | } |
| 6448 | *p = '\0'; |
| 6449 | |
| 6450 | id = strstrip(start); |
| 6451 | val = strstrip(p + 1); |
| 6452 | |
| 6453 | /* parse id */ |
| 6454 | p = strchr(id, '.'); |
| 6455 | if (p) { |
| 6456 | *p++ = '\0'; |
| 6457 | force_ent->device = simple_strtoul(p, &endp, 10); |
| 6458 | if (p == endp || *endp != '\0') { |
| 6459 | *reason = "invalid device"; |
| 6460 | return -EINVAL; |
| 6461 | } |
| 6462 | } |
| 6463 | |
| 6464 | force_ent->port = simple_strtoul(id, &endp, 10); |
| 6465 | if (p == endp || *endp != '\0') { |
| 6466 | *reason = "invalid port/link"; |
| 6467 | return -EINVAL; |
| 6468 | } |
| 6469 | |
| 6470 | parse_val: |
| 6471 | /* parse val, allow shortcuts so that both 1.5 and 1.5Gbps work */ |
| 6472 | for (i = 0; i < ARRAY_SIZE(force_tbl); i++) { |
| 6473 | const struct ata_force_param *fp = &force_tbl[i]; |
| 6474 | |
| 6475 | if (strncasecmp(val, fp->name, strlen(val))) |
| 6476 | continue; |
| 6477 | |
| 6478 | nr_matches++; |
| 6479 | match_fp = fp; |
| 6480 | |
| 6481 | if (strcasecmp(val, fp->name) == 0) { |
| 6482 | nr_matches = 1; |
| 6483 | break; |
| 6484 | } |
| 6485 | } |
| 6486 | |
| 6487 | if (!nr_matches) { |
| 6488 | *reason = "unknown value"; |
| 6489 | return -EINVAL; |
| 6490 | } |
| 6491 | if (nr_matches > 1) { |
| 6492 | *reason = "ambigious value"; |
| 6493 | return -EINVAL; |
| 6494 | } |
| 6495 | |
| 6496 | force_ent->param = *match_fp; |
| 6497 | |
| 6498 | return 0; |
| 6499 | } |
| 6500 | |
| 6501 | static void __init ata_parse_force_param(void) |
| 6502 | { |
| 6503 | int idx = 0, size = 1; |
| 6504 | int last_port = -1, last_device = -1; |
| 6505 | char *p, *cur, *next; |
| 6506 | |
| 6507 | /* calculate maximum number of params and allocate force_tbl */ |
| 6508 | for (p = ata_force_param_buf; *p; p++) |
| 6509 | if (*p == ',') |
| 6510 | size++; |
| 6511 | |
| 6512 | ata_force_tbl = kzalloc(sizeof(ata_force_tbl[0]) * size, GFP_KERNEL); |
| 6513 | if (!ata_force_tbl) { |
| 6514 | printk(KERN_WARNING "ata: failed to extend force table, " |
| 6515 | "libata.force ignored\n"); |
| 6516 | return; |
| 6517 | } |
| 6518 | |
| 6519 | /* parse and populate the table */ |
| 6520 | for (cur = ata_force_param_buf; *cur != '\0'; cur = next) { |
| 6521 | const char *reason = ""; |
| 6522 | struct ata_force_ent te = { .port = -1, .device = -1 }; |
| 6523 | |
| 6524 | next = cur; |
| 6525 | if (ata_parse_force_one(&next, &te, &reason)) { |
| 6526 | printk(KERN_WARNING "ata: failed to parse force " |
| 6527 | "parameter \"%s\" (%s)\n", |
| 6528 | cur, reason); |
| 6529 | continue; |
| 6530 | } |
| 6531 | |
| 6532 | if (te.port == -1) { |
| 6533 | te.port = last_port; |
| 6534 | te.device = last_device; |
| 6535 | } |
| 6536 | |
| 6537 | ata_force_tbl[idx++] = te; |
| 6538 | |
| 6539 | last_port = te.port; |
| 6540 | last_device = te.device; |
| 6541 | } |
| 6542 | |
| 6543 | ata_force_tbl_size = idx; |
| 6544 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6545 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6546 | static int __init ata_init(void) |
| 6547 | { |
Tejun Heo | 270390e | 2010-05-10 21:41:35 +0200 | [diff] [blame] | 6548 | int rc = -ENOMEM; |
| 6549 | |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 6550 | ata_parse_force_param(); |
| 6551 | |
Tejun Heo | 453b07a | 2006-05-31 18:27:42 +0900 | [diff] [blame] | 6552 | ata_aux_wq = create_singlethread_workqueue("ata_aux"); |
Elias Oltmanns | 49ea3b0 | 2008-07-30 12:32:39 -0700 | [diff] [blame] | 6553 | if (!ata_aux_wq) |
Tejun Heo | 270390e | 2010-05-10 21:41:35 +0200 | [diff] [blame] | 6554 | goto fail; |
| 6555 | |
| 6556 | rc = ata_sff_init(); |
| 6557 | if (rc) |
| 6558 | goto fail; |
Tejun Heo | 453b07a | 2006-05-31 18:27:42 +0900 | [diff] [blame] | 6559 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6560 | printk(KERN_DEBUG "libata version " DRV_VERSION " loaded.\n"); |
| 6561 | return 0; |
Elias Oltmanns | 49ea3b0 | 2008-07-30 12:32:39 -0700 | [diff] [blame] | 6562 | |
Tejun Heo | 270390e | 2010-05-10 21:41:35 +0200 | [diff] [blame] | 6563 | fail: |
Elias Oltmanns | 49ea3b0 | 2008-07-30 12:32:39 -0700 | [diff] [blame] | 6564 | kfree(ata_force_tbl); |
Tejun Heo | 270390e | 2010-05-10 21:41:35 +0200 | [diff] [blame] | 6565 | if (ata_aux_wq) |
| 6566 | destroy_workqueue(ata_aux_wq); |
| 6567 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6568 | } |
| 6569 | |
| 6570 | static void __exit ata_exit(void) |
| 6571 | { |
Tejun Heo | 270390e | 2010-05-10 21:41:35 +0200 | [diff] [blame] | 6572 | ata_sff_exit(); |
Tejun Heo | 3326732 | 2008-02-13 09:15:09 +0900 | [diff] [blame] | 6573 | kfree(ata_force_tbl); |
Tejun Heo | 453b07a | 2006-05-31 18:27:42 +0900 | [diff] [blame] | 6574 | destroy_workqueue(ata_aux_wq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6575 | } |
| 6576 | |
Brian King | a462508 | 2006-11-13 16:32:36 -0600 | [diff] [blame] | 6577 | subsys_initcall(ata_init); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6578 | module_exit(ata_exit); |
| 6579 | |
Akinobu Mita | 9990b6f | 2010-04-12 21:11:41 +0900 | [diff] [blame] | 6580 | static DEFINE_RATELIMIT_STATE(ratelimit, HZ / 5, 1); |
Jeff Garzik | 67846b3 | 2005-10-05 02:58:32 -0400 | [diff] [blame] | 6581 | |
| 6582 | int ata_ratelimit(void) |
| 6583 | { |
Akinobu Mita | 9990b6f | 2010-04-12 21:11:41 +0900 | [diff] [blame] | 6584 | return __ratelimit(&ratelimit); |
Jeff Garzik | 67846b3 | 2005-10-05 02:58:32 -0400 | [diff] [blame] | 6585 | } |
| 6586 | |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 6587 | /** |
| 6588 | * ata_wait_register - wait until register value changes |
| 6589 | * @reg: IO-mapped register |
| 6590 | * @mask: Mask to apply to read register value |
| 6591 | * @val: Wait condition |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 6592 | * @interval: polling interval in milliseconds |
| 6593 | * @timeout: timeout in milliseconds |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 6594 | * |
| 6595 | * Waiting for some bits of register to change is a common |
| 6596 | * operation for ATA controllers. This function reads 32bit LE |
| 6597 | * IO-mapped register @reg and tests for the following condition. |
| 6598 | * |
| 6599 | * (*@reg & mask) != val |
| 6600 | * |
| 6601 | * If the condition is met, it returns; otherwise, the process is |
| 6602 | * repeated after @interval_msec until timeout. |
| 6603 | * |
| 6604 | * LOCKING: |
| 6605 | * Kernel thread context (may sleep) |
| 6606 | * |
| 6607 | * RETURNS: |
| 6608 | * The final register value. |
| 6609 | */ |
| 6610 | u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val, |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 6611 | unsigned long interval, unsigned long timeout) |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 6612 | { |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 6613 | unsigned long deadline; |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 6614 | u32 tmp; |
| 6615 | |
| 6616 | tmp = ioread32(reg); |
| 6617 | |
| 6618 | /* Calculate timeout _after_ the first read to make sure |
| 6619 | * preceding writes reach the controller before starting to |
| 6620 | * eat away the timeout. |
| 6621 | */ |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 6622 | deadline = ata_deadline(jiffies, timeout); |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 6623 | |
Tejun Heo | 341c2c9 | 2008-05-20 02:17:51 +0900 | [diff] [blame] | 6624 | while ((tmp & mask) == val && time_before(jiffies, deadline)) { |
| 6625 | msleep(interval); |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 6626 | tmp = ioread32(reg); |
| 6627 | } |
| 6628 | |
| 6629 | return tmp; |
| 6630 | } |
| 6631 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6632 | /* |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 6633 | * Dummy port_ops |
| 6634 | */ |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 6635 | static unsigned int ata_dummy_qc_issue(struct ata_queued_cmd *qc) |
| 6636 | { |
| 6637 | return AC_ERR_SYSTEM; |
| 6638 | } |
| 6639 | |
Tejun Heo | 182d7bb | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 6640 | static void ata_dummy_error_handler(struct ata_port *ap) |
| 6641 | { |
| 6642 | /* truly dummy */ |
| 6643 | } |
| 6644 | |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 6645 | struct ata_port_operations ata_dummy_port_ops = { |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 6646 | .qc_prep = ata_noop_qc_prep, |
| 6647 | .qc_issue = ata_dummy_qc_issue, |
Tejun Heo | 182d7bb | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 6648 | .error_handler = ata_dummy_error_handler, |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 6649 | }; |
| 6650 | |
Tejun Heo | 21b0ad4 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6651 | const struct ata_port_info ata_dummy_port_info = { |
| 6652 | .port_ops = &ata_dummy_port_ops, |
| 6653 | }; |
| 6654 | |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 6655 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6656 | * libata is essentially a library of internal helper functions for |
| 6657 | * low-level ATA host controller drivers. As such, the API/ABI is |
| 6658 | * likely to change as new drivers are added and updated. |
| 6659 | * Do not depend on ABI/API stability. |
| 6660 | */ |
Tejun Heo | e9c8391 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 6661 | EXPORT_SYMBOL_GPL(sata_deb_timing_normal); |
| 6662 | EXPORT_SYMBOL_GPL(sata_deb_timing_hotplug); |
| 6663 | EXPORT_SYMBOL_GPL(sata_deb_timing_long); |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 6664 | EXPORT_SYMBOL_GPL(ata_base_port_ops); |
| 6665 | EXPORT_SYMBOL_GPL(sata_port_ops); |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 6666 | EXPORT_SYMBOL_GPL(ata_dummy_port_ops); |
Tejun Heo | 21b0ad4 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6667 | EXPORT_SYMBOL_GPL(ata_dummy_port_info); |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 6668 | EXPORT_SYMBOL_GPL(ata_link_next); |
| 6669 | EXPORT_SYMBOL_GPL(ata_dev_next); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6670 | EXPORT_SYMBOL_GPL(ata_std_bios_param); |
Tejun Heo | d8d9129 | 2010-05-15 20:09:34 +0200 | [diff] [blame] | 6671 | EXPORT_SYMBOL_GPL(ata_scsi_unlock_native_capacity); |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 6672 | EXPORT_SYMBOL_GPL(ata_host_init); |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6673 | EXPORT_SYMBOL_GPL(ata_host_alloc); |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6674 | EXPORT_SYMBOL_GPL(ata_host_alloc_pinfo); |
Tejun Heo | b1c7291 | 2008-07-31 17:02:43 +0900 | [diff] [blame] | 6675 | EXPORT_SYMBOL_GPL(ata_slave_link_init); |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 6676 | EXPORT_SYMBOL_GPL(ata_host_start); |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6677 | EXPORT_SYMBOL_GPL(ata_host_register); |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 6678 | EXPORT_SYMBOL_GPL(ata_host_activate); |
Tejun Heo | 0529c15 | 2007-01-20 16:00:26 +0900 | [diff] [blame] | 6679 | EXPORT_SYMBOL_GPL(ata_host_detach); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6680 | EXPORT_SYMBOL_GPL(ata_sg_init); |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 6681 | EXPORT_SYMBOL_GPL(ata_qc_complete); |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 6682 | EXPORT_SYMBOL_GPL(ata_qc_complete_multiple); |
Tejun Heo | 436d34b | 2008-04-02 17:28:46 +0900 | [diff] [blame] | 6683 | EXPORT_SYMBOL_GPL(atapi_cmd_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6684 | EXPORT_SYMBOL_GPL(ata_tf_to_fis); |
| 6685 | EXPORT_SYMBOL_GPL(ata_tf_from_fis); |
Tejun Heo | 6357357 | 2007-11-27 19:43:39 +0900 | [diff] [blame] | 6686 | EXPORT_SYMBOL_GPL(ata_pack_xfermask); |
| 6687 | EXPORT_SYMBOL_GPL(ata_unpack_xfermask); |
| 6688 | EXPORT_SYMBOL_GPL(ata_xfer_mask2mode); |
| 6689 | EXPORT_SYMBOL_GPL(ata_xfer_mode2mask); |
| 6690 | EXPORT_SYMBOL_GPL(ata_xfer_mode2shift); |
| 6691 | EXPORT_SYMBOL_GPL(ata_mode_string); |
| 6692 | EXPORT_SYMBOL_GPL(ata_id_xfermask); |
Alan | 0435182 | 2007-03-06 02:37:52 -0800 | [diff] [blame] | 6693 | EXPORT_SYMBOL_GPL(ata_do_set_mode); |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 6694 | EXPORT_SYMBOL_GPL(ata_std_qc_defer); |
Brian King | e46834c | 2006-03-17 17:04:03 -0600 | [diff] [blame] | 6695 | EXPORT_SYMBOL_GPL(ata_noop_qc_prep); |
Alan | 10305f0 | 2007-02-20 18:01:59 +0000 | [diff] [blame] | 6696 | EXPORT_SYMBOL_GPL(ata_dev_disable); |
Tejun Heo | 3c567b7 | 2006-05-15 20:57:23 +0900 | [diff] [blame] | 6697 | EXPORT_SYMBOL_GPL(sata_set_spd); |
Tejun Heo | aa2731a | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 6698 | EXPORT_SYMBOL_GPL(ata_wait_after_reset); |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 6699 | EXPORT_SYMBOL_GPL(sata_link_debounce); |
| 6700 | EXPORT_SYMBOL_GPL(sata_link_resume); |
Tejun Heo | 0aa1113 | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 6701 | EXPORT_SYMBOL_GPL(ata_std_prereset); |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 6702 | EXPORT_SYMBOL_GPL(sata_link_hardreset); |
Tejun Heo | 57c9efd | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 6703 | EXPORT_SYMBOL_GPL(sata_std_hardreset); |
Tejun Heo | 203c75b | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 6704 | EXPORT_SYMBOL_GPL(ata_std_postreset); |
Jeff Garzik | 2e9edbf | 2006-03-24 09:56:57 -0500 | [diff] [blame] | 6705 | EXPORT_SYMBOL_GPL(ata_dev_classify); |
| 6706 | EXPORT_SYMBOL_GPL(ata_dev_pair); |
Jeff Garzik | 67846b3 | 2005-10-05 02:58:32 -0400 | [diff] [blame] | 6707 | EXPORT_SYMBOL_GPL(ata_ratelimit); |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 6708 | EXPORT_SYMBOL_GPL(ata_wait_register); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6709 | EXPORT_SYMBOL_GPL(ata_scsi_queuecmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6710 | EXPORT_SYMBOL_GPL(ata_scsi_slave_config); |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 6711 | EXPORT_SYMBOL_GPL(ata_scsi_slave_destroy); |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 6712 | EXPORT_SYMBOL_GPL(ata_scsi_change_queue_depth); |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 6713 | EXPORT_SYMBOL_GPL(sata_scr_valid); |
| 6714 | EXPORT_SYMBOL_GPL(sata_scr_read); |
| 6715 | EXPORT_SYMBOL_GPL(sata_scr_write); |
| 6716 | EXPORT_SYMBOL_GPL(sata_scr_write_flush); |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 6717 | EXPORT_SYMBOL_GPL(ata_link_online); |
| 6718 | EXPORT_SYMBOL_GPL(ata_link_offline); |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 6719 | #ifdef CONFIG_PM |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 6720 | EXPORT_SYMBOL_GPL(ata_host_suspend); |
| 6721 | EXPORT_SYMBOL_GPL(ata_host_resume); |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 6722 | #endif /* CONFIG_PM */ |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 6723 | EXPORT_SYMBOL_GPL(ata_id_string); |
| 6724 | EXPORT_SYMBOL_GPL(ata_id_c_string); |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 6725 | EXPORT_SYMBOL_GPL(ata_do_dev_read_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6726 | EXPORT_SYMBOL_GPL(ata_scsi_simulate); |
| 6727 | |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 6728 | EXPORT_SYMBOL_GPL(ata_pio_need_iordy); |
Tejun Heo | 6357357 | 2007-11-27 19:43:39 +0900 | [diff] [blame] | 6729 | EXPORT_SYMBOL_GPL(ata_timing_find_mode); |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 6730 | EXPORT_SYMBOL_GPL(ata_timing_compute); |
| 6731 | EXPORT_SYMBOL_GPL(ata_timing_merge); |
Tejun Heo | a0f79b9 | 2007-12-18 16:33:05 +0900 | [diff] [blame] | 6732 | EXPORT_SYMBOL_GPL(ata_timing_cycle2mode); |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 6733 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6734 | #ifdef CONFIG_PCI |
| 6735 | EXPORT_SYMBOL_GPL(pci_test_config_bits); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6736 | EXPORT_SYMBOL_GPL(ata_pci_remove_one); |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 6737 | #ifdef CONFIG_PM |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 6738 | EXPORT_SYMBOL_GPL(ata_pci_device_do_suspend); |
| 6739 | EXPORT_SYMBOL_GPL(ata_pci_device_do_resume); |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 6740 | EXPORT_SYMBOL_GPL(ata_pci_device_suspend); |
| 6741 | EXPORT_SYMBOL_GPL(ata_pci_device_resume); |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 6742 | #endif /* CONFIG_PM */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6743 | #endif /* CONFIG_PCI */ |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 6744 | |
Tejun Heo | b64bbc3 | 2007-07-16 14:29:39 +0900 | [diff] [blame] | 6745 | EXPORT_SYMBOL_GPL(__ata_ehi_push_desc); |
| 6746 | EXPORT_SYMBOL_GPL(ata_ehi_push_desc); |
| 6747 | EXPORT_SYMBOL_GPL(ata_ehi_clear_desc); |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 6748 | EXPORT_SYMBOL_GPL(ata_port_desc); |
| 6749 | #ifdef CONFIG_PCI |
| 6750 | EXPORT_SYMBOL_GPL(ata_port_pbar_desc); |
| 6751 | #endif /* CONFIG_PCI */ |
Tejun Heo | 7b70fc0 | 2006-05-15 20:58:07 +0900 | [diff] [blame] | 6752 | EXPORT_SYMBOL_GPL(ata_port_schedule_eh); |
Tejun Heo | dbd8261 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 6753 | EXPORT_SYMBOL_GPL(ata_link_abort); |
Tejun Heo | 7b70fc0 | 2006-05-15 20:58:07 +0900 | [diff] [blame] | 6754 | EXPORT_SYMBOL_GPL(ata_port_abort); |
Tejun Heo | e318049 | 2006-05-15 20:58:09 +0900 | [diff] [blame] | 6755 | EXPORT_SYMBOL_GPL(ata_port_freeze); |
Tejun Heo | 7d77b24 | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 6756 | EXPORT_SYMBOL_GPL(sata_async_notification); |
Tejun Heo | e318049 | 2006-05-15 20:58:09 +0900 | [diff] [blame] | 6757 | EXPORT_SYMBOL_GPL(ata_eh_freeze_port); |
| 6758 | EXPORT_SYMBOL_GPL(ata_eh_thaw_port); |
Tejun Heo | ece1d63 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 6759 | EXPORT_SYMBOL_GPL(ata_eh_qc_complete); |
| 6760 | EXPORT_SYMBOL_GPL(ata_eh_qc_retry); |
Mark Lord | 10acf3b | 2008-05-02 02:14:53 -0400 | [diff] [blame] | 6761 | EXPORT_SYMBOL_GPL(ata_eh_analyze_ncq_error); |
Tejun Heo | 022bdb0 | 2006-05-15 20:58:22 +0900 | [diff] [blame] | 6762 | EXPORT_SYMBOL_GPL(ata_do_eh); |
Tejun Heo | a1efdab | 2008-03-25 12:22:50 +0900 | [diff] [blame] | 6763 | EXPORT_SYMBOL_GPL(ata_std_error_handler); |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 6764 | |
| 6765 | EXPORT_SYMBOL_GPL(ata_cable_40wire); |
| 6766 | EXPORT_SYMBOL_GPL(ata_cable_80wire); |
| 6767 | EXPORT_SYMBOL_GPL(ata_cable_unknown); |
Tejun Heo | c88f90c | 2007-11-27 19:43:48 +0900 | [diff] [blame] | 6768 | EXPORT_SYMBOL_GPL(ata_cable_ignore); |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 6769 | EXPORT_SYMBOL_GPL(ata_cable_sata); |