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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Jeff Garzikaf36d7f2005-08-28 20:18:39 -04002 * Copyright 2003-2005 Red Hat, Inc. All rights reserved.
3 * Copyright 2003-2005 Jeff Garzik
4 *
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2, or (at your option)
9 * any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; see the file COPYING. If not, write to
18 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
19 *
20 *
21 * libata documentation is available via 'make {ps|pdf}docs',
22 * as Documentation/DocBook/libata.*
23 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070024 */
25
26#ifndef __LINUX_LIBATA_H__
27#define __LINUX_LIBATA_H__
28
29#include <linux/delay.h>
Tejun Heo341c2c92008-05-20 02:17:51 +090030#include <linux/jiffies.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#include <linux/interrupt.h>
Andrew Morton1c72d8d2005-11-10 16:21:38 -080032#include <linux/dma-mapping.h>
Jens Axboe87260212007-10-16 11:14:12 +020033#include <linux/scatterlist.h>
Tejun Heof0d36ef2007-01-20 16:00:28 +090034#include <linux/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070035#include <linux/ata.h>
36#include <linux/workqueue.h>
Jeff Garzik35bb94b2006-04-11 13:12:34 -040037#include <scsi/scsi_host.h>
Kristen Carlson Accardi11ef6972006-09-28 11:29:01 -070038#include <linux/acpi.h>
Tejun Heoceb0c642007-12-05 16:43:06 +090039#include <linux/cdrom.h>
Tejun Heoc0c362b2010-09-06 17:57:14 +020040#include <linux/sched.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070041
Jeff Garzika6d967a2006-09-25 15:33:09 -040042/*
43 * Define if arch has non-standard setup. This is a _PCI_ standard
44 * not a legacy or ISA standard.
45 */
46#ifdef CONFIG_ATA_NONSTANDARD
Alan Cox2ec7df02006-08-10 16:59:10 +090047#include <asm/libata-portmap.h>
Jeff Garzika6d967a2006-09-25 15:33:09 -040048#else
49#include <asm-generic/libata-portmap.h>
50#endif
Alan Cox2ec7df02006-08-10 16:59:10 +090051
Linus Torvalds1da177e2005-04-16 15:20:36 -070052/*
Randy Dunlapbfd60572006-01-17 19:34:42 -050053 * compile-time options: to be removed as soon as all the drivers are
54 * converted to the new debugging mechanism
Linus Torvalds1da177e2005-04-16 15:20:36 -070055 */
56#undef ATA_DEBUG /* debugging output */
57#undef ATA_VERBOSE_DEBUG /* yet more debugging output */
58#undef ATA_IRQ_TRAP /* define to ack screaming irqs */
59#undef ATA_NDEBUG /* define to disable quick runtime checks */
Linus Torvalds1da177e2005-04-16 15:20:36 -070060
61
62/* note: prints function name for you */
63#ifdef ATA_DEBUG
Alexander Beregalov1f938d02008-07-21 00:06:19 +040064#define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
Linus Torvalds1da177e2005-04-16 15:20:36 -070065#ifdef ATA_VERBOSE_DEBUG
Alexander Beregalov1f938d02008-07-21 00:06:19 +040066#define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
Linus Torvalds1da177e2005-04-16 15:20:36 -070067#else
68#define VPRINTK(fmt, args...)
69#endif /* ATA_VERBOSE_DEBUG */
70#else
71#define DPRINTK(fmt, args...)
72#define VPRINTK(fmt, args...)
73#endif /* ATA_DEBUG */
74
Alexander Beregalov1f938d02008-07-21 00:06:19 +040075#define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args)
Jeff Garzik2c13b7c2005-11-14 14:14:16 -050076
Randy Dunlapbfd60572006-01-17 19:34:42 -050077/* NEW: debug levels */
78#define HAVE_LIBATA_MSG 1
79
80enum {
81 ATA_MSG_DRV = 0x0001,
82 ATA_MSG_INFO = 0x0002,
83 ATA_MSG_PROBE = 0x0004,
84 ATA_MSG_WARN = 0x0008,
85 ATA_MSG_MALLOC = 0x0010,
86 ATA_MSG_CTL = 0x0020,
87 ATA_MSG_INTR = 0x0040,
88 ATA_MSG_ERR = 0x0080,
89};
90
91#define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV)
92#define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO)
93#define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE)
94#define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN)
95#define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
96#define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL)
97#define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR)
98#define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR)
99
100static inline u32 ata_msg_init(int dval, int default_msg_enable_bits)
101{
102 if (dval < 0 || dval >= (sizeof(u32) * 8))
103 return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */
104 if (!dval)
105 return 0;
106 return (1 << dval) - 1;
107}
108
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109/* defines only for the constants which don't work well as enums */
110#define ATA_TAG_POISON 0xfafbfcfdU
111
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112enum {
113 /* various global constants */
114 LIBATA_MAX_PRD = ATA_MAX_PRD / 2,
Alan Coxd26fc952007-07-06 19:13:52 -0400115 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116 ATA_DEF_QUEUE = 1,
Tejun Heo2ab7db12006-05-15 20:58:02 +0900117 /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */
Tejun Heoa6e6ce82006-05-15 21:03:48 +0900118 ATA_MAX_QUEUE = 32,
Tejun Heo2ab7db12006-05-15 20:58:02 +0900119 ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1,
Tejun Heo341c2c92008-05-20 02:17:51 +0900120 ATA_SHORT_PAUSE = 16,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121
Tejun Heo140b5e52007-12-12 12:21:52 +0900122 ATAPI_MAX_DRAIN = 16 << 10,
123
Tejun Heob558edd2008-01-24 00:05:14 +0900124 ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1,
125
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 ATA_SHT_EMULATED = 1,
127 ATA_SHT_CMD_PER_LUN = 1,
128 ATA_SHT_THIS_ID = -1,
Jeff Garzikcf482932005-10-22 00:19:33 -0400129 ATA_SHT_USE_CLUSTERING = 1,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130
131 /* struct ata_device stuff */
Tejun Heo949b38a2006-04-02 18:51:52 +0900132 ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */
133 ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */
Jeff Garzik029f5462006-04-02 10:30:40 -0400134 ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */
Tejun Heo88e49032006-05-15 21:03:38 +0900135 ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */
Tejun Heo6fc49ad2006-11-11 20:10:45 +0900136 ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */
Tejun Heo67465442007-05-15 03:28:16 +0900137 ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */
138 ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */
Tejun Heo7d77b242007-09-23 13:14:13 +0900139 ATA_DFLAG_AN = (1 << 7), /* AN configured */
Kristen Carlson Accardica773292007-10-25 00:58:59 -0400140 ATA_DFLAG_HIPM = (1 << 8), /* device supports HIPM */
141 ATA_DFLAG_DIPM = (1 << 9), /* device supports DIPM */
Tejun Heo91163002008-02-21 13:25:50 +0900142 ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */
Kristen Carlson Accardi25571642007-09-11 11:41:59 -0700143 ATA_DFLAG_CFG_MASK = (1 << 12) - 1,
Tejun Heo949b38a2006-04-02 18:51:52 +0900144
Kristen Carlson Accardi25571642007-09-11 11:41:59 -0700145 ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */
146 ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */
Tejun Heo054a5fb2007-10-25 18:30:36 +0900147 ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */
Tejun Heo00115e02007-11-27 19:28:58 +0900148 ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200149 ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */
Tejun Heo445d2112010-04-05 10:33:13 +0900150 ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */
Tejun Heof20ded32007-11-27 19:28:52 +0900151 ATA_DFLAG_INIT_MASK = (1 << 24) - 1,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152
Tejun Heof20ded32007-11-27 19:28:52 +0900153 ATA_DFLAG_DETACH = (1 << 24),
154 ATA_DFLAG_DETACHED = (1 << 25),
Tejun Heoabdda732006-05-31 18:27:29 +0900155
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156 ATA_DEV_UNKNOWN = 0, /* unknown device */
157 ATA_DEV_ATA = 1, /* ATA device */
158 ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */
159 ATA_DEV_ATAPI = 3, /* ATAPI device */
160 ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */
Tejun Heoe0a71752007-09-23 13:14:12 +0900161 ATA_DEV_PMP = 5, /* SATA port multiplier */
162 ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */
163 ATA_DEV_SEMB = 7, /* SEMB */
164 ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */
165 ATA_DEV_NONE = 9, /* no device */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166
Tejun Heo0c887582007-08-06 18:36:23 +0900167 /* struct ata_link flags */
Tejun Heo05944bd2008-08-13 20:19:09 +0900168 ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */
Tejun Heoae791c02007-09-23 13:14:12 +0900169 ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */
170 ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */
171 ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */
172 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB,
Tejun Heofd995f72007-09-23 13:14:12 +0900173 ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */
Tejun Heof9df58c2007-09-23 13:14:13 +0900174 ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */
Kristen Carlson Accardi18f7ba42008-06-03 10:33:55 -0700175 ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */
Tejun Heo6b7ae952010-09-01 17:50:06 +0200176 ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */
Tejun Heo0c887582007-08-06 18:36:23 +0900177
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178 /* struct ata_port flags */
Tejun Heo949b38a2006-04-02 18:51:52 +0900179 ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180 /* (doesn't imply presence) */
Tejun Heo949b38a2006-04-02 18:51:52 +0900181 ATA_FLAG_SATA = (1 << 1),
182 ATA_FLAG_NO_LEGACY = (1 << 2), /* no legacy mode check */
183 ATA_FLAG_MMIO = (1 << 3), /* use MMIO, not PIO */
184 ATA_FLAG_SRST = (1 << 4), /* (obsolete) use ATA SRST, not E.D.D. */
185 ATA_FLAG_SATA_RESET = (1 << 5), /* (obsolete) use COMRESET */
186 ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */
187 ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */
188 ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */
Tejun Heo7395acb2006-05-31 18:27:25 +0900189 ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD
190 * doesn't handle PIO interrupts */
191 ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */
Rafael J. Wysocki2a6e58d2009-01-19 20:56:43 +0100192 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */
193 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */
Tejun Heo7395acb2006-05-31 18:27:25 +0900194 ATA_FLAG_DEBUGMSG = (1 << 13),
Shaohua Li388539f2009-07-27 09:24:35 +0800195 ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */
Tejun Heob2a8bbe2007-01-25 19:40:05 +0900196 ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */
Alan Coxf834e492007-02-07 13:46:00 -0800197 ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */
Tejun Heo3cadbcc2007-05-15 03:28:15 +0900198 ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */
Kristen Carlson Accardi9f45cbd2007-08-15 03:57:11 -0400199 ATA_FLAG_AN = (1 << 18), /* controller supports AN */
Tejun Heoe0a71752007-09-23 13:14:12 +0900200 ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */
Tejun Heoc93b2632010-09-01 17:50:04 +0200201 ATA_FLAG_LPM = (1 << 20), /* driver can handle LPM */
Kristen Carlson Accardi18f7ba42008-06-03 10:33:55 -0700202 ATA_FLAG_EM = (1 << 21), /* driver supports enclosure
203 * management */
204 ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity
205 * led */
Jens Axboe9b847542006-01-06 09:28:07 +0100206
Tejun Heob51e9e52006-06-29 01:29:30 +0900207 /* bits 24:31 of ap->flags are reserved for LLD specific flags */
Alan Cox8d238e02006-01-17 20:50:31 +0000208
Alan Coxe3cf95d2009-04-09 17:31:17 +0100209
Tejun Heob51e9e52006-06-29 01:29:30 +0900210 /* struct ata_port pflags */
211 ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */
212 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */
213 ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */
214 ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */
215 ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */
Tejun Heob51e9e52006-06-29 01:29:30 +0900216 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */
Tejun Heof4d6d002007-05-01 11:50:15 +0200217 ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */
Tejun Heoafaa5c32007-10-09 15:06:10 +0900218 ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */
Tejun Heoece180d2008-11-03 20:04:37 +0900219 ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */
220 ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */
Tejun Heob51e9e52006-06-29 01:29:30 +0900221
Tejun Heob51e9e52006-06-29 01:29:30 +0900222 ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */
Tejun Heo500530f2006-07-03 16:07:27 +0900223 ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */
Tejun Heoc05e6ff2007-12-15 15:05:02 +0900224 ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */
Tejun Heodde44582006-02-02 00:56:10 +0900225
Alan Coxe3cf95d2009-04-09 17:31:17 +0100226 ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */
227 ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */
228
Tejun Heo949b38a2006-04-02 18:51:52 +0900229 /* struct ata_queued_cmd flags */
230 ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */
Tejun Heo001102d2007-12-05 16:43:09 +0900231 ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */
Tejun Heo27197362006-04-02 18:51:53 +0900232 ATA_QCFLAG_IO = (1 << 3), /* standard IO command */
Tejun Heoe61e0672006-05-15 20:57:40 +0900233 ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */
Tejun Heoda917d62007-09-23 13:14:12 +0900234 ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */
Tejun Heoe027bd32007-10-26 16:19:26 +0900235 ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */
Tejun Heo03faab72008-03-27 19:14:24 +0900236 ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */
Tejun Heoe61e0672006-05-15 20:57:40 +0900237
Tejun Heo9ec957f2006-05-15 20:57:58 +0900238 ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */
239 ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */
240 ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241
Alan Cox4e5ec5d2006-03-27 18:42:40 +0100242 /* host set flags */
Jeff Garzikcca39742006-08-24 03:19:22 -0400243 ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */
Tejun Heoecef7252007-04-17 23:44:06 +0900244 ATA_HOST_STARTED = (1 << 1), /* Host started */
Arjan van de Ven886ad092009-01-09 15:54:07 -0800245 ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */
Jeff Garzik9bec2e32006-08-31 00:02:15 -0400246
Tejun Heob8b275e2007-07-10 15:55:43 +0900247 /* bits 24:31 of host->flags are reserved for LLD specific flags */
248
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 /* various lengths of time */
Tejun Heo341c2c92008-05-20 02:17:51 +0900250 ATA_TMOUT_BOOT = 30000, /* heuristic */
251 ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */
Tejun Heo341c2c92008-05-20 02:17:51 +0900252 ATA_TMOUT_INTERNAL_QUICK = 5000,
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200253 ATA_TMOUT_MAX_PARK = 30000,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254
Tejun Heob48d58f2010-04-09 19:46:38 +0900255 /*
256 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s
257 * is too much without parallel probing. Use 2s if parallel
258 * probing is available, 800ms otherwise.
Tejun Heo88ff6ea2007-10-16 14:21:24 -0700259 */
Tejun Heob48d58f2010-04-09 19:46:38 +0900260 ATA_TMOUT_FF_WAIT_LONG = 2000,
261 ATA_TMOUT_FF_WAIT = 800,
Tejun Heo88ff6ea2007-10-16 14:21:24 -0700262
Tejun Heo705e76b2008-04-07 22:47:19 +0900263 /* Spec mandates to wait for ">= 2ms" before checking status
264 * after reset. We wait 150ms, because that was the magic
265 * delay used for ATAPI devices in Hale Landis's ATADRVR, for
266 * the period of time between when the ATA command register is
267 * written, and then status is checked. Because waiting for
268 * "a while" before checking status is fine, post SRST, we
269 * perform this magic delay here as well.
270 *
271 * Old drivers/ide uses the 2mS rule and then waits for ready.
272 */
Tejun Heo341c2c92008-05-20 02:17:51 +0900273 ATA_WAIT_AFTER_RESET = 150,
Tejun Heo705e76b2008-04-07 22:47:19 +0900274
Tejun Heo9dadd452008-04-07 22:47:19 +0900275 /* If PMP is supported, we have to do follow-up SRST. As some
276 * PMPs don't send D2H Reg FIS after hardreset, LLDs are
277 * advised to wait only for the following duration before
278 * doing SRST.
279 */
Stuart Hayese7d3ef12009-03-04 11:59:46 -0800280 ATA_TMOUT_PMP_SRST_WAIT = 5000,
Tejun Heo9dadd452008-04-07 22:47:19 +0900281
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282 /* ATA bus states */
283 BUS_UNKNOWN = 0,
284 BUS_DMA = 1,
285 BUS_IDLE = 2,
286 BUS_NOINTR = 3,
287 BUS_NODATA = 4,
288 BUS_TIMER = 5,
289 BUS_PIO = 6,
290 BUS_EDD = 7,
291 BUS_IDENTIFY = 8,
292 BUS_PACKET = 9,
293
294 /* SATA port states */
295 PORT_UNKNOWN = 0,
296 PORT_ENABLED = 1,
297 PORT_DISABLED = 2,
298
299 /* encoding various smaller bitmaps into a single
Tejun Heo7dc951a2007-11-27 19:43:42 +0900300 * unsigned long bitmap
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301 */
Tejun Heo70cd0712007-11-27 19:43:40 +0900302 ATA_NR_PIO_MODES = 7,
303 ATA_NR_MWDMA_MODES = 5,
304 ATA_NR_UDMA_MODES = 8,
Tejun Heo1da7b0d2006-03-06 04:31:56 +0900305
306 ATA_SHIFT_PIO = 0,
Tejun Heo70cd0712007-11-27 19:43:40 +0900307 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES,
308 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES,
Tejun Heo1da7b0d2006-03-06 04:31:56 +0900309
Jeff Garzikcedc9a42005-10-05 07:13:30 -0400310 /* size of buffer to pad xfers ending on unaligned boundaries */
311 ATA_DMA_PAD_SZ = 4,
Tejun Heo949b38a2006-04-02 18:51:52 +0900312
Tejun Heo0c247c52006-05-15 20:58:19 +0900313 /* ering size */
314 ATA_ERING_SIZE = 32,
315
Tejun Heo31cc23b2007-09-23 13:14:12 +0900316 /* return values for ->qc_defer */
317 ATA_DEFER_LINK = 1,
318 ATA_DEFER_PORT = 2,
319
Tejun Heof3e81b12006-05-15 20:58:21 +0900320 /* desc_len for ata_eh_info and context */
321 ATA_EH_DESC_LEN = 80,
322
Tejun Heo9be1e972006-05-15 20:58:17 +0900323 /* reset / recovery action types */
324 ATA_EH_REVALIDATE = (1 << 0),
Tejun Heocf480622008-01-24 00:05:14 +0900325 ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */
326 ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */
327 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
Tejun Heof9df58c2007-09-23 13:14:13 +0900328 ATA_EH_ENABLE_LINK = (1 << 3),
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200329 ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */
Tejun Heo9be1e972006-05-15 20:58:17 +0900330
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200331 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK,
Tejun Heob5b3fa32008-07-31 17:02:42 +0900332 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET |
Tejun Heo6b7ae952010-09-01 17:50:06 +0200333 ATA_EH_ENABLE_LINK,
Tejun Heo9be1e972006-05-15 20:58:17 +0900334
Tejun Heof3e81b12006-05-15 20:58:21 +0900335 /* ata_eh_info->flags */
Tejun Heoabdda732006-05-31 18:27:29 +0900336 ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */
Tejun Heo1cdaf532006-07-03 16:07:26 +0900337 ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */
338 ATA_EHI_QUIET = (1 << 3), /* be quiet */
Tejun Heoe2f3d752010-09-07 14:05:31 +0200339 ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */
Tejun Heoabdda732006-05-31 18:27:29 +0900340
Tejun Heo0d64a232007-04-23 02:41:05 +0900341 ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */
342 ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */
343 ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */
344 ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */
Andrea Gelmini89692c02010-10-16 15:19:18 +0200345 ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */
Tejun Heof3e81b12006-05-15 20:58:21 +0900346
Tejun Heo0d64a232007-04-23 02:41:05 +0900347 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
Tejun Heo13abf502006-07-10 23:18:46 +0900348
Tejun Heo848e4c62008-10-21 14:26:39 +0900349 /* mask of flags to transfer *to* the slave link */
350 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET,
351
Tejun Heoa1e10f72007-08-18 13:28:49 +0900352 /* max tries if error condition is still set after ->error_handler */
353 ATA_EH_MAX_TRIES = 5,
Tejun Heoad9e2762006-05-15 20:58:12 +0900354
Tejun Heo5040ab62010-01-11 11:14:44 +0900355 /* sometimes resuming a link requires several retries */
356 ATA_LINK_RESUME_TRIES = 5,
357
Tejun Heo14d2bac2006-04-02 17:54:46 +0900358 /* how hard are we gonna try to probe/recover devices */
359 ATA_PROBE_MAX_TRIES = 3,
Tejun Heo022bdb02006-05-15 20:58:22 +0900360 ATA_EH_DEV_TRIES = 3,
Tejun Heoe0a71752007-09-23 13:14:12 +0900361 ATA_EH_PMP_TRIES = 5,
362 ATA_EH_PMP_LINK_TRIES = 3,
363
Tejun Heobf1bff62008-05-19 01:15:10 +0900364 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */
Tejun Heof5914a42006-05-31 18:27:48 +0900365
Tejun Heo87fbc5a2008-05-20 02:17:54 +0900366 /* This should match the actual table size of
367 * ata_eh_cmd_timeout_table in libata-eh.c.
368 */
Tejun Heo6013efd2009-11-19 15:36:45 +0900369 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6,
Tejun Heo87fbc5a2008-05-20 02:17:54 +0900370
Alan Cox93590852006-09-12 16:55:12 +0100371 /* Horkage types. May be set by libata or controller on drives
372 (some horkage may be drive/controller pair dependant */
373
374 ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */
Alan Cox6919a0a2006-10-27 19:08:46 -0700375 ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */
376 ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */
Albert Lee18d6e9d2007-04-02 11:34:15 +0800377 ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */
Tejun Heo16c55b02007-08-29 11:58:33 +0900378 ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */
Tejun Heo50af2fa2008-05-19 01:15:14 +0900379 ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */
Alan Cox93328e12007-09-29 04:06:48 -0400380 ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */
Alan Cox6bbfd532007-11-05 22:58:58 +0000381 ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */
Albert Lee2d3b8ee2007-11-15 10:35:46 +0900382 ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */
Jens Axboe9ce8e302008-08-27 15:23:18 +0200383 ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */
Tejun Heo6a87e422008-11-03 19:01:09 +0900384 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands
385 not multiple of 16 bytes */
Nick Andrew877d0312009-01-26 11:06:57 +0100386 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */
Tejun Heo90627122009-01-29 20:31:36 +0900387 ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */
Tejun Heod0cb43b2009-07-09 09:27:50 +0900388 ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */
Shaohua Li388539f2009-07-27 09:24:35 +0800389 ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */
Tejun Heo43c9c592010-05-23 12:59:11 +0200390 ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */
Alan Coxb3a70602007-10-02 12:38:26 -0400391
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400392 /* DMA mask for user DMA control: User visible values; DO NOT
Alan Coxb3a70602007-10-02 12:38:26 -0400393 renumber */
394 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */
395 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */
396 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */
Tejun Heoceb0c642007-12-05 16:43:06 +0900397
398 /* ATAPI command types */
399 ATAPI_READ = 0, /* READs */
400 ATAPI_WRITE = 1, /* WRITEs */
401 ATAPI_READ_CD = 2, /* READ CD [MSF] */
Tejun Heoe52dcc42008-04-02 17:35:19 +0900402 ATAPI_PASS_THRU = 3, /* SAT pass-thru */
403 ATAPI_MISC = 4, /* the rest */
Tejun Heo624d5c52008-03-25 22:16:41 +0900404
405 /* Timing constants */
406 ATA_TIMING_SETUP = (1 << 0),
407 ATA_TIMING_ACT8B = (1 << 1),
408 ATA_TIMING_REC8B = (1 << 2),
409 ATA_TIMING_CYC8B = (1 << 3),
410 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
411 ATA_TIMING_CYC8B,
412 ATA_TIMING_ACTIVE = (1 << 4),
413 ATA_TIMING_RECOVER = (1 << 5),
David Daney3ada9c12009-01-15 17:45:31 -0800414 ATA_TIMING_DMACK_HOLD = (1 << 6),
415 ATA_TIMING_CYCLE = (1 << 7),
416 ATA_TIMING_UDMA = (1 << 8),
Tejun Heo624d5c52008-03-25 22:16:41 +0900417 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
418 ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
419 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
David Daney3ada9c12009-01-15 17:45:31 -0800420 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE |
421 ATA_TIMING_UDMA,
Tejun Heof1bce7f2009-09-16 04:16:04 +0900422
423 /* ACPI constants */
424 ATA_ACPI_FILTER_SETXFER = 1 << 0,
425 ATA_ACPI_FILTER_LOCK = 1 << 1,
426 ATA_ACPI_FILTER_DIPM = 1 << 2,
Tejun Heofa5b5612009-09-16 04:17:02 +0900427 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */
428 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */
Tejun Heof1bce7f2009-09-16 04:16:04 +0900429
430 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER |
431 ATA_ACPI_FILTER_LOCK |
432 ATA_ACPI_FILTER_DIPM,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433};
434
Tejun Heo7dc951a2007-11-27 19:43:42 +0900435enum ata_xfer_mask {
436 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1)
437 << ATA_SHIFT_PIO,
438 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1)
439 << ATA_SHIFT_MWDMA,
440 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1)
441 << ATA_SHIFT_UDMA,
442};
443
Albert Lee14be71f2005-09-27 17:36:35 +0800444enum hsm_task_states {
Albert Leec56b14d22005-09-30 19:07:39 +0800445 HSM_ST_IDLE, /* no command on going */
Albert Lee71527642007-04-02 11:28:52 +0800446 HSM_ST_FIRST, /* (waiting the device to)
447 write CDB or first data block */
Albert Leec56b14d22005-09-30 19:07:39 +0800448 HSM_ST, /* (waiting the device to) transfer data */
449 HSM_ST_LAST, /* (waiting the device to) complete command */
Albert Leec56b14d22005-09-30 19:07:39 +0800450 HSM_ST_ERR, /* error */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451};
452
Jeff Garzika7dac442005-10-30 04:44:42 -0500453enum ata_completion_errors {
Tejun Heo11a56d22006-01-23 13:09:36 +0900454 AC_ERR_DEV = (1 << 0), /* device reported error */
455 AC_ERR_HSM = (1 << 1), /* host state machine violation */
456 AC_ERR_TIMEOUT = (1 << 2), /* timeout */
457 AC_ERR_MEDIA = (1 << 3), /* media error */
458 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */
459 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */
460 AC_ERR_SYSTEM = (1 << 6), /* system error */
461 AC_ERR_INVALID = (1 << 7), /* invalid argument */
462 AC_ERR_OTHER = (1 << 8), /* unknown */
Tejun Heo55a8e2c2006-11-10 18:08:10 +0900463 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */
Tejun Heo5335b722007-07-16 14:29:40 +0900464 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */
Jeff Garzika7dac442005-10-30 04:44:42 -0500465};
466
Tejun Heoc93b2632010-09-01 17:50:04 +0200467/*
468 * Link power management policy: If you alter this, you also need to
469 * alter libata-scsi.c (for the ascii descriptions)
470 */
471enum ata_lpm_policy {
472 ATA_LPM_UNKNOWN,
473 ATA_LPM_MAX_POWER,
474 ATA_LPM_MED_POWER,
475 ATA_LPM_MIN_POWER,
476};
477
Tejun Heo6b7ae952010-09-01 17:50:06 +0200478enum ata_lpm_hints {
479 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */
480 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */
481};
482
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483/* forward declarations */
484struct scsi_device;
485struct ata_port_operations;
486struct ata_port;
Tejun Heocc0680a2007-08-06 18:36:23 +0900487struct ata_link;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488struct ata_queued_cmd;
489
490/* typedefs */
Tejun Heo77853bf2006-01-23 13:09:36 +0900491typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
Tejun Heocc0680a2007-08-06 18:36:23 +0900492typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
493typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
Tejun Heod4b2bab2007-02-02 16:50:52 +0900494 unsigned long deadline);
Tejun Heocc0680a2007-08-06 18:36:23 +0900495typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496
Tony Jonesee959b02008-02-22 00:13:36 +0100497extern struct device_attribute dev_attr_link_power_management_policy;
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200498extern struct device_attribute dev_attr_unload_heads;
Kristen Carlson Accardi18f7ba42008-06-03 10:33:55 -0700499extern struct device_attribute dev_attr_em_message_type;
500extern struct device_attribute dev_attr_em_message;
501extern struct device_attribute dev_attr_sw_activity;
502
503enum sw_activity {
504 OFF,
505 BLINK_ON,
506 BLINK_OFF,
507};
Kristen Carlson Accardica773292007-10-25 00:58:59 -0400508
Tejun Heo127102a2008-04-07 22:47:21 +0900509#ifdef CONFIG_ATA_SFF
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510struct ata_ioports {
Tejun Heo0d5ff562007-02-01 15:06:36 +0900511 void __iomem *cmd_addr;
512 void __iomem *data_addr;
513 void __iomem *error_addr;
514 void __iomem *feature_addr;
515 void __iomem *nsect_addr;
516 void __iomem *lbal_addr;
517 void __iomem *lbam_addr;
518 void __iomem *lbah_addr;
519 void __iomem *device_addr;
520 void __iomem *status_addr;
521 void __iomem *command_addr;
522 void __iomem *altstatus_addr;
523 void __iomem *ctl_addr;
Tejun Heo9a7780c2010-05-19 22:10:24 +0200524#ifdef CONFIG_ATA_BMDMA
Tejun Heo0d5ff562007-02-01 15:06:36 +0900525 void __iomem *bmdma_addr;
Tejun Heo9a7780c2010-05-19 22:10:24 +0200526#endif /* CONFIG_ATA_BMDMA */
Tejun Heo0d5ff562007-02-01 15:06:36 +0900527 void __iomem *scr_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528};
Tejun Heo127102a2008-04-07 22:47:21 +0900529#endif /* CONFIG_ATA_SFF */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530
Jeff Garzikcca39742006-08-24 03:19:22 -0400531struct ata_host {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700532 spinlock_t lock;
533 struct device *dev;
Tejun Heo0d5ff562007-02-01 15:06:36 +0900534 void __iomem * const *iomap;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535 unsigned int n_ports;
536 void *private_data;
Tejun Heo029cfd62008-03-25 12:22:49 +0900537 struct ata_port_operations *ops;
Alan Cox5444a6f2006-03-27 18:58:20 +0100538 unsigned long flags;
Tejun Heoc0c362b2010-09-06 17:57:14 +0200539
540 struct mutex eh_mutex;
541 struct task_struct *eh_owner;
542
Tejun Heofafbae82007-05-15 03:28:16 +0900543#ifdef CONFIG_ATA_ACPI
544 acpi_handle acpi_handle;
545#endif
Alan032af1c2007-03-01 17:36:46 +0000546 struct ata_port *simplex_claimed; /* channel owning the DMA */
Tejun Heof0eb62b2006-06-12 23:05:38 +0900547 struct ata_port *ports[0];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700548};
549
550struct ata_queued_cmd {
551 struct ata_port *ap;
552 struct ata_device *dev;
553
554 struct scsi_cmnd *scsicmd;
555 void (*scsidone)(struct scsi_cmnd *);
556
557 struct ata_taskfile tf;
558 u8 cdb[ATAPI_CDB_LEN];
559
560 unsigned long flags; /* ATA_QCFLAG_xxx */
561 unsigned int tag;
562 unsigned int n_elem;
FUJITA Tomonori58256272009-02-27 17:35:43 +0900563 unsigned int orig_n_elem;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564
565 int dma_dir;
566
Mark Lord5a5dbd12007-03-16 10:22:26 -0400567 unsigned int sect_size;
Jeff Garzikcedc9a42005-10-05 07:13:30 -0400568
Linus Torvalds1da177e2005-04-16 15:20:36 -0700569 unsigned int nbytes;
Tejun Heoaacda372008-03-18 17:47:43 +0900570 unsigned int extrabytes;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571 unsigned int curbytes;
572
Linus Torvalds1da177e2005-04-16 15:20:36 -0700573 struct scatterlist sgent;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574
Tejun Heoff2aeb12007-12-05 16:43:11 +0900575 struct scatterlist *sg;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576
Richard Kennedyb34e9042010-09-10 12:19:43 +0100577 struct scatterlist *cursg;
578 unsigned int cursg_ofs;
579
Albert Leea22e2eb2005-12-05 15:38:02 +0800580 unsigned int err_mask;
Tejun Heoe61e0672006-05-15 20:57:40 +0900581 struct ata_taskfile result_tf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700582 ata_qc_cb_t complete_fn;
583
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584 void *private_data;
Darrick J. Wong1c50dc82007-01-30 01:18:41 -0800585 void *lldd_task;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586};
587
Jeff Garzikcca39742006-08-24 03:19:22 -0400588struct ata_port_stats {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700589 unsigned long unhandled_irq;
590 unsigned long idle_irq;
591 unsigned long rw_reqbuf;
592};
593
Tejun Heo0c247c52006-05-15 20:58:19 +0900594struct ata_ering_entry {
Tejun Heo3884f7b2007-11-27 19:28:56 +0900595 unsigned int eflags;
Tejun Heo0c247c52006-05-15 20:58:19 +0900596 unsigned int err_mask;
597 u64 timestamp;
598};
599
600struct ata_ering {
601 int cursor;
602 struct ata_ering_entry ring[ATA_ERING_SIZE];
603};
604
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605struct ata_device {
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900606 struct ata_link *link;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700607 unsigned int devno; /* 0 or 1 */
Tejun Heo75683fe2007-07-05 13:31:27 +0900608 unsigned int horkage; /* List of broken features */
Richard Kennedy6866e7b2008-09-22 14:47:13 -0700609 unsigned long flags; /* ATA_DFLAG_xxx */
Tejun Heo3edebac2006-05-31 18:27:40 +0900610 struct scsi_device *sdev; /* attached SCSI device */
Bartlomiej Zolnierkiewicz95514fd2009-11-25 18:12:48 +0100611 void *private_data;
Tejun Heofafbae82007-05-15 03:28:16 +0900612#ifdef CONFIG_ATA_ACPI
613 acpi_handle acpi_handle;
Tejun Heo398e0782007-12-15 15:05:03 +0900614 union acpi_object *gtf_cache;
Tejun Heo110f66d2009-09-16 04:17:28 +0900615 unsigned int gtf_filter;
Tejun Heofafbae82007-05-15 03:28:16 +0900616#endif
Gwendal Grignoud9027472010-05-25 12:31:38 -0700617 struct device tdev;
Tejun Heo99cf6102009-01-29 20:31:32 +0900618 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */
Tejun Heo72fa4b72006-05-31 18:27:32 +0900619 u64 n_sectors; /* size of device, if ATA */
Tejun Heo5920dad2009-07-15 17:11:41 +0900620 u64 n_native_sectors; /* native size, if ATA */
Tejun Heo72fa4b72006-05-31 18:27:32 +0900621 unsigned int class; /* ATA_DEV_xxx */
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200622 unsigned long unpark_deadline;
Tejun Heoe0a71752007-09-23 13:14:12 +0900623
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624 u8 pio_mode;
625 u8 dma_mode;
626 u8 xfer_mode;
627 unsigned int xfer_shift; /* ATA_SHIFT_xxx */
628
Albert Lee8cbd6df2005-10-12 15:06:27 +0800629 unsigned int multi_count; /* sectors count for
630 READ/WRITE MULTIPLE */
Tejun Heob00eec12006-02-12 23:32:59 +0900631 unsigned int max_sectors; /* per-device max sectors */
Tejun Heo6e7846e2006-02-12 23:32:58 +0900632 unsigned int cdb_len;
Albert Lee8bf62ece2005-05-12 15:29:42 -0400633
Tejun Heoacf356b2006-03-24 14:07:50 +0900634 /* per-dev xfer mask */
Tejun Heo7dc951a2007-11-27 19:43:42 +0900635 unsigned long pio_mask;
636 unsigned long mwdma_mask;
637 unsigned long udma_mask;
Tejun Heoacf356b2006-03-24 14:07:50 +0900638
Albert Lee8bf62ece2005-05-12 15:29:42 -0400639 /* for CHS addressing */
640 u16 cylinders; /* Number of cylinders */
641 u16 heads; /* Number of heads */
642 u16 sectors; /* Number of sectors per track */
Tejun Heo0c247c52006-05-15 20:58:19 +0900643
Jeff Garzikf7e98932008-04-29 17:47:34 -0400644 union {
645 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
646 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
647 };
Tejun Heo99cf6102009-01-29 20:31:32 +0900648
649 /* error history */
650 int spdn_cnt;
651 /* ering is CLEAR_END, read comment above CLEAR_END */
652 struct ata_ering ering;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653};
654
Tejun Heo99cf6102009-01-29 20:31:32 +0900655/* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are
656 * cleared to zero on ata_dev_init().
Tejun Heo72fa4b72006-05-31 18:27:32 +0900657 */
Tejun Heo99cf6102009-01-29 20:31:32 +0900658#define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
659#define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
Tejun Heo72fa4b72006-05-31 18:27:32 +0900660
Tejun Heof3e81b12006-05-15 20:58:21 +0900661struct ata_eh_info {
662 struct ata_device *dev; /* offending device */
663 u32 serror; /* SError from LLDD */
664 unsigned int err_mask; /* port-wide err_mask */
665 unsigned int action; /* ATA_EH_* action mask */
Tejun Heo47005f22006-06-19 18:27:23 +0900666 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */
Tejun Heof3e81b12006-05-15 20:58:21 +0900667 unsigned int flags; /* ATA_EHI_* flags */
Tejun Heoabdda732006-05-31 18:27:29 +0900668
Tejun Heoabdda732006-05-31 18:27:29 +0900669 unsigned int probe_mask;
670
Tejun Heof3e81b12006-05-15 20:58:21 +0900671 char desc[ATA_EH_DESC_LEN];
672 int desc_len;
673};
674
675struct ata_eh_context {
676 struct ata_eh_info i;
677 int tries[ATA_MAX_DEVICES];
Tejun Heo87fbc5a2008-05-20 02:17:54 +0900678 int cmd_timeout_idx[ATA_MAX_DEVICES]
679 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE];
Tejun Heoabdda732006-05-31 18:27:29 +0900680 unsigned int classes[ATA_MAX_DEVICES];
681 unsigned int did_probe_mask;
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200682 unsigned int unloaded_mask;
Tejun Heo00115e02007-11-27 19:28:58 +0900683 unsigned int saved_ncq_enabled;
684 u8 saved_xfer_mode[ATA_MAX_DEVICES];
Tejun Heo0a2c0f52008-05-20 02:17:52 +0900685 /* timestamp for the last reset attempt or success */
686 unsigned long last_reset;
Tejun Heof3e81b12006-05-15 20:58:21 +0900687};
688
Tejun Heo64578a32007-05-15 03:28:16 +0900689struct ata_acpi_drive
690{
691 u32 pio;
692 u32 dma;
693} __packed;
694
695struct ata_acpi_gtm {
696 struct ata_acpi_drive drive[2];
697 u32 flags;
698} __packed;
699
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900700struct ata_link {
701 struct ata_port *ap;
Tejun Heo89898052007-08-06 18:36:23 +0900702 int pmp; /* port multiplier port # */
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900703
Gwendal Grignoud9027472010-05-25 12:31:38 -0700704 struct device tdev;
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900705 unsigned int active_tag; /* active tag on this link */
706 u32 sactive; /* active NCQ commands */
707
Tejun Heo0c887582007-08-06 18:36:23 +0900708 unsigned int flags; /* ATA_LFLAG_xxx */
709
Tejun Heod127ea72008-07-31 16:09:34 +0900710 u32 saved_scontrol; /* SControl on probe */
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900711 unsigned int hw_sata_spd_limit;
712 unsigned int sata_spd_limit;
713 unsigned int sata_spd; /* current SATA PHY speed */
Tejun Heo6b7ae952010-09-01 17:50:06 +0200714 enum ata_lpm_policy lpm_policy;
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900715
716 /* record runtime error info, protected by host_set lock */
717 struct ata_eh_info eh_info;
718 /* EH context */
719 struct ata_eh_context eh_context;
720
721 struct ata_device device[ATA_MAX_DEVICES];
722};
Gwendal Grignoud9027472010-05-25 12:31:38 -0700723#define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
724#define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900725
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726struct ata_port {
Jeff Garzikcca39742006-08-24 03:19:22 -0400727 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */
Tejun Heo029cfd62008-03-25 12:22:49 +0900728 struct ata_port_operations *ops;
Jeff Garzikba6a1302006-06-22 23:46:10 -0400729 spinlock_t *lock;
Alan Coxe3cf95d2009-04-09 17:31:17 +0100730 /* Flags owned by the EH context. Only EH should touch these once the
731 port is active */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732 unsigned long flags; /* ATA_FLAG_xxx */
Alan Coxe3cf95d2009-04-09 17:31:17 +0100733 /* Flags that change dynamically, protected by ap->lock */
Tejun Heob51e9e52006-06-29 01:29:30 +0900734 unsigned int pflags; /* ATA_PFLAG_xxx */
Tejun Heo44877b42007-02-21 01:06:51 +0900735 unsigned int print_id; /* user visible unique port ID */
736 unsigned int port_no; /* 0 based port no. inside the host */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700737
Tejun Heo127102a2008-04-07 22:47:21 +0900738#ifdef CONFIG_ATA_SFF
Linus Torvalds1da177e2005-04-16 15:20:36 -0700739 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700740 u8 ctl; /* cache of ATA control register */
741 u8 last_ctl; /* Cache last written value */
Gwendal Grignouea3c6452010-08-31 16:20:36 -0700742 struct ata_link* sff_pio_task_link; /* link currently used */
Tejun Heoc4291372010-05-10 21:41:38 +0200743 struct delayed_work sff_pio_task;
Tejun Heo9a7780c2010-05-19 22:10:24 +0200744#ifdef CONFIG_ATA_BMDMA
Tejun Heof60d7012010-05-10 21:41:41 +0200745 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */
746 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */
Tejun Heo9a7780c2010-05-19 22:10:24 +0200747#endif /* CONFIG_ATA_BMDMA */
Tejun Heo5fe74542010-05-10 21:41:37 +0200748#endif /* CONFIG_ATA_SFF */
749
Linus Torvalds1da177e2005-04-16 15:20:36 -0700750 unsigned int pio_mask;
751 unsigned int mwdma_mask;
752 unsigned int udma_mask;
753 unsigned int cbl; /* cable type; ATA_CBL_xxx */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700754
755 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE];
Tejun Heo8a8bc222008-11-10 14:48:21 +0900756 unsigned long qc_allocated;
Tejun Heodedaf2b2006-05-15 21:03:43 +0900757 unsigned int qc_active;
Tejun Heoda917d62007-09-23 13:14:12 +0900758 int nr_active_links; /* #links with active qcs */
Tejun Heodedaf2b2006-05-15 21:03:43 +0900759
Tejun Heob1c72912008-07-31 17:02:43 +0900760 struct ata_link link; /* host default link */
761 struct ata_link *slave_link; /* see ata_slave_link_init() */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700762
Tejun Heo89898052007-08-06 18:36:23 +0900763 int nr_pmp_links; /* nr of available PMP links */
764 struct ata_link *pmp_link; /* array of PMP links */
Tejun Heoda917d62007-09-23 13:14:12 +0900765 struct ata_link *excl_link; /* for PMP qc exclusion */
Tejun Heo89898052007-08-06 18:36:23 +0900766
Jeff Garzikcca39742006-08-24 03:19:22 -0400767 struct ata_port_stats stats;
768 struct ata_host *host;
Brian King2f1f6102006-03-23 17:30:15 -0600769 struct device *dev;
Gwendal Grignoud9027472010-05-25 12:31:38 -0700770 struct device tdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700771
Tejun Heoad72cf92010-07-02 10:03:52 +0200772 struct mutex scsi_scan_mutex;
David Howells52bad642006-11-22 14:54:01 +0000773 struct delayed_work hotplug_task;
Jeff Garzik3b01b8a2006-06-12 00:22:04 -0400774 struct work_struct scsi_rescan_task;
Tejun Heo86e45b62006-03-05 15:29:09 +0900775
Albert Lee14be71f2005-09-27 17:36:35 +0800776 unsigned int hsm_task_state;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700777
Randy Dunlapbfd60572006-01-17 19:34:42 -0500778 u32 msg_enable;
Tejun Heoa72ec4c2006-01-23 13:09:37 +0900779 struct list_head eh_done_q;
Tejun Heoc6cf9e92006-05-31 18:27:27 +0900780 wait_queue_head_t eh_wait_q;
Tejun Heoa1e10f72007-08-18 13:28:49 +0900781 int eh_tries;
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200782 struct completion park_req_pending;
Randy Dunlapbfd60572006-01-17 19:34:42 -0500783
Tejun Heo500530f2006-07-03 16:07:27 +0900784 pm_message_t pm_mesg;
785 int *pm_result;
Tejun Heo6b7ae952010-09-01 17:50:06 +0200786 enum ata_lpm_policy target_lpm_policy;
Tejun Heo500530f2006-07-03 16:07:27 +0900787
Tejun Heo5ddf24c2007-07-16 14:29:41 +0900788 struct timer_list fastdrain_timer;
789 unsigned long fastdrain_cnt;
790
Kristen Carlson Accardi18f7ba42008-06-03 10:33:55 -0700791 int em_message_type;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700792 void *private_data;
Tejun Heofe635c72006-05-15 20:57:35 +0900793
Tejun Heofafbae82007-05-15 03:28:16 +0900794#ifdef CONFIG_ATA_ACPI
795 acpi_handle acpi_handle;
Tejun Heoc05e6ff2007-12-15 15:05:02 +0900796 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */
Tejun Heofafbae82007-05-15 03:28:16 +0900797#endif
Tejun Heo84bda122009-03-02 18:53:26 +0900798 /* owned by EH */
799 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700800};
801
Tejun Heo029cfd62008-03-25 12:22:49 +0900802/* The following initializer overrides a method to NULL whether one of
803 * its parent has the method defined or not. This is equivalent to
804 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant
805 * expression and thus can't be used as an initializer.
806 */
807#define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
808
Linus Torvalds1da177e2005-04-16 15:20:36 -0700809struct ata_port_operations {
Tejun Heoc1bc8992008-03-25 12:22:47 +0900810 /*
811 * Command execution
812 */
813 int (*qc_defer)(struct ata_queued_cmd *qc);
814 int (*check_atapi_dma)(struct ata_queued_cmd *qc);
815 void (*qc_prep)(struct ata_queued_cmd *qc);
816 unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
Tejun Heo22183bf2008-04-07 22:47:20 +0900817 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700818
Tejun Heoc1bc8992008-03-25 12:22:47 +0900819 /*
820 * Configuration and exception handling
821 */
822 int (*cable_detect)(struct ata_port *ap);
823 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask);
824 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
825 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
826 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
Alan Cox963e4972008-07-24 17:16:06 +0100827 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700828
Tejun Heoc1bc8992008-03-25 12:22:47 +0900829 void (*dev_config)(struct ata_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700830
Tejun Heoc1bc8992008-03-25 12:22:47 +0900831 void (*freeze)(struct ata_port *ap);
832 void (*thaw)(struct ata_port *ap);
Tejun Heoa1efdab2008-03-25 12:22:50 +0900833 ata_prereset_fn_t prereset;
834 ata_reset_fn_t softreset;
835 ata_reset_fn_t hardreset;
836 ata_postreset_fn_t postreset;
837 ata_prereset_fn_t pmp_prereset;
838 ata_reset_fn_t pmp_softreset;
839 ata_reset_fn_t pmp_hardreset;
840 ata_postreset_fn_t pmp_postreset;
Tejun Heoc1bc8992008-03-25 12:22:47 +0900841 void (*error_handler)(struct ata_port *ap);
Alan Coxc96f1732009-03-24 10:23:46 +0000842 void (*lost_interrupt)(struct ata_port *ap);
Tejun Heoc1bc8992008-03-25 12:22:47 +0900843 void (*post_internal_cmd)(struct ata_queued_cmd *qc);
844
845 /*
846 * Optional features
847 */
Tejun Heo82ef04f2008-07-31 17:02:40 +0900848 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val);
849 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val);
Tejun Heoc1bc8992008-03-25 12:22:47 +0900850 void (*pmp_attach)(struct ata_port *ap);
851 void (*pmp_detach)(struct ata_port *ap);
Tejun Heo6b7ae952010-09-01 17:50:06 +0200852 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy,
853 unsigned hints);
Tejun Heoc1bc8992008-03-25 12:22:47 +0900854
855 /*
856 * Start, stop, suspend and resume
857 */
858 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg);
859 int (*port_resume)(struct ata_port *ap);
860 int (*port_start)(struct ata_port *ap);
861 void (*port_stop)(struct ata_port *ap);
862 void (*host_stop)(struct ata_host *host);
863
Tejun Heo127102a2008-04-07 22:47:21 +0900864#ifdef CONFIG_ATA_SFF
Tejun Heoc1bc8992008-03-25 12:22:47 +0900865 /*
866 * SFF / taskfile oriented ops
867 */
Tejun Heo5682ed32008-04-07 22:47:16 +0900868 void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
Sergei Shtylyov41dec292010-05-07 22:47:50 +0400869 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl);
Tejun Heo5682ed32008-04-07 22:47:16 +0900870 u8 (*sff_check_status)(struct ata_port *ap);
871 u8 (*sff_check_altstatus)(struct ata_port *ap);
872 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
873 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
874 void (*sff_exec_command)(struct ata_port *ap,
875 const struct ata_taskfile *tf);
876 unsigned int (*sff_data_xfer)(struct ata_device *dev,
877 unsigned char *buf, unsigned int buflen, int rw);
Sergei Shtylyove42a5422010-05-07 22:49:02 +0400878 void (*sff_irq_on)(struct ata_port *);
Tejun Heo27943622010-01-19 10:49:19 +0900879 bool (*sff_irq_check)(struct ata_port *);
Tejun Heo5682ed32008-04-07 22:47:16 +0900880 void (*sff_irq_clear)(struct ata_port *);
Tejun Heo8244cd02010-05-10 21:41:36 +0200881 void (*sff_drain_fifo)(struct ata_queued_cmd *qc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700882
Tejun Heo9a7780c2010-05-19 22:10:24 +0200883#ifdef CONFIG_ATA_BMDMA
Tejun Heoc1bc8992008-03-25 12:22:47 +0900884 void (*bmdma_setup)(struct ata_queued_cmd *qc);
885 void (*bmdma_start)(struct ata_queued_cmd *qc);
886 void (*bmdma_stop)(struct ata_queued_cmd *qc);
887 u8 (*bmdma_status)(struct ata_port *ap);
Tejun Heo9a7780c2010-05-19 22:10:24 +0200888#endif /* CONFIG_ATA_BMDMA */
Tejun Heo127102a2008-04-07 22:47:21 +0900889#endif /* CONFIG_ATA_SFF */
Tejun Heoc19ba8a2006-01-24 17:05:22 +0900890
Kristen Carlson Accardi18f7ba42008-06-03 10:33:55 -0700891 ssize_t (*em_show)(struct ata_port *ap, char *buf);
892 ssize_t (*em_store)(struct ata_port *ap, const char *message,
893 size_t size);
894 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf);
895 ssize_t (*sw_activity_store)(struct ata_device *dev,
896 enum sw_activity val);
Tejun Heoc1bc8992008-03-25 12:22:47 +0900897 /*
898 * Obsolete
Tejun Heo9ec957f2006-05-15 20:57:58 +0900899 */
Tejun Heoc1bc8992008-03-25 12:22:47 +0900900 void (*phy_reset)(struct ata_port *ap);
901 void (*eng_timeout)(struct ata_port *ap);
Tejun Heo029cfd62008-03-25 12:22:49 +0900902
903 /*
904 * ->inherits must be the last field and all the preceding
905 * fields must be pointers.
906 */
907 const struct ata_port_operations *inherits;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700908};
909
910struct ata_port_info {
Jeff Garzikcca39742006-08-24 03:19:22 -0400911 unsigned long flags;
Tejun Heo0c887582007-08-06 18:36:23 +0900912 unsigned long link_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700913 unsigned long pio_mask;
914 unsigned long mwdma_mask;
915 unsigned long udma_mask;
Tejun Heo029cfd62008-03-25 12:22:49 +0900916 struct ata_port_operations *port_ops;
Alan Coxe99f8b52005-11-08 14:09:44 +0000917 void *private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700918};
919
Alan Cox452503f2005-10-21 19:01:32 -0400920struct ata_timing {
921 unsigned short mode; /* ATA mode */
922 unsigned short setup; /* t1 */
923 unsigned short act8b; /* t2 for 8-bit I/O */
924 unsigned short rec8b; /* t2i for 8-bit I/O */
925 unsigned short cyc8b; /* t0 for 8-bit I/O */
926 unsigned short active; /* t2 or tD */
927 unsigned short recover; /* t2i or tK */
David Daney3ada9c12009-01-15 17:45:31 -0800928 unsigned short dmack_hold; /* tj */
Alan Cox452503f2005-10-21 19:01:32 -0400929 unsigned short cycle; /* t0 */
930 unsigned short udma; /* t2CYCTYP/2 */
931};
932
Tejun Heo624d5c52008-03-25 22:16:41 +0900933/*
934 * Core layer - drivers/ata/libata-core.c
935 */
Tejun Heoe9c83912006-07-03 16:07:26 +0900936extern const unsigned long sata_deb_timing_normal[];
937extern const unsigned long sata_deb_timing_hotplug[];
938extern const unsigned long sata_deb_timing_long[];
939
Tejun Heo029cfd62008-03-25 12:22:49 +0900940extern struct ata_port_operations ata_dummy_port_ops;
Tejun Heo21b0ad42007-04-17 23:44:07 +0900941extern const struct ata_port_info ata_dummy_port_info;
Tejun Heodd5b06c2006-08-10 16:59:12 +0900942
Tejun Heoe9c83912006-07-03 16:07:26 +0900943static inline const unsigned long *
944sata_ehc_deb_timing(struct ata_eh_context *ehc)
945{
946 if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
947 return sata_deb_timing_hotplug;
948 else
949 return sata_deb_timing_normal;
950}
Tejun Heod7bb4cc2006-05-31 18:27:46 +0900951
Tejun Heodd5b06c2006-08-10 16:59:12 +0900952static inline int ata_port_is_dummy(struct ata_port *ap)
953{
954 return ap->ops == &ata_dummy_port_ops;
955}
956
Tejun Heo936fd732007-08-06 18:36:23 +0900957extern int sata_set_spd(struct ata_link *link);
Tejun Heo0aa11132008-04-07 22:47:18 +0900958extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
Tejun Heoaa2731a2008-04-07 22:47:19 +0900959extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
960 int (*check_ready)(struct ata_link *link));
Tejun Heo936fd732007-08-06 18:36:23 +0900961extern int sata_link_debounce(struct ata_link *link,
962 const unsigned long *params, unsigned long deadline);
963extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
964 unsigned long deadline);
Tejun Heo1152b262010-09-01 17:50:05 +0200965extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
966 bool spm_wakeup);
Tejun Heocc0680a2007-08-06 18:36:23 +0900967extern int sata_link_hardreset(struct ata_link *link,
Tejun Heo9dadd452008-04-07 22:47:19 +0900968 const unsigned long *timing, unsigned long deadline,
969 bool *online, int (*check_ready)(struct ata_link *));
Tejun Heo57c9efd2008-04-07 22:47:19 +0900970extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
971 unsigned long deadline);
Tejun Heo203c75b2008-04-07 22:47:18 +0900972extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
Jeff Garzik28555682007-10-11 17:12:35 -0400973
Tejun Heof3187192007-04-17 23:44:07 +0900974extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
Tejun Heof5cda252007-04-17 23:44:07 +0900975extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
976 const struct ata_port_info * const * ppi, int n_ports);
Tejun Heob1c72912008-07-31 17:02:43 +0900977extern int ata_slave_link_init(struct ata_port *ap);
Tejun Heoecef7252007-04-17 23:44:06 +0900978extern int ata_host_start(struct ata_host *host);
Tejun Heof3187192007-04-17 23:44:07 +0900979extern int ata_host_register(struct ata_host *host,
980 struct scsi_host_template *sht);
Tejun Heof5cda252007-04-17 23:44:07 +0900981extern int ata_host_activate(struct ata_host *host, int irq,
982 irq_handler_t irq_handler, unsigned long irq_flags,
983 struct scsi_host_template *sht);
Tejun Heo0529c152007-01-20 16:00:26 +0900984extern void ata_host_detach(struct ata_host *host);
Jeff Garzikcca39742006-08-24 03:19:22 -0400985extern void ata_host_init(struct ata_host *, struct device *,
Tejun Heo029cfd62008-03-25 12:22:49 +0900986 unsigned long, struct ata_port_operations *);
Jeff Garzik193515d2005-11-07 00:59:37 -0500987extern int ata_scsi_detect(struct scsi_host_template *sht);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700988extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
Jeff Garzikf2812332010-11-16 02:10:29 -0500989extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd);
Jeff Garzik94be9a52009-01-16 10:17:09 -0500990extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev,
991 int cmd, void __user *arg);
Brian King80289162006-08-07 14:27:31 -0500992extern void ata_sas_port_destroy(struct ata_port *);
Jeff Garzikcca39742006-08-24 03:19:22 -0400993extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
Brian King80289162006-08-07 14:27:31 -0500994 struct ata_port_info *, struct Scsi_Host *);
995extern int ata_sas_port_init(struct ata_port *);
996extern int ata_sas_port_start(struct ata_port *ap);
997extern void ata_sas_port_stop(struct ata_port *ap);
998extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
999extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *),
1000 struct ata_port *ap);
Tejun Heo936fd732007-08-06 18:36:23 +09001001extern int sata_scr_valid(struct ata_link *link);
1002extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
1003extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
1004extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
Tejun Heob5b3fa32008-07-31 17:02:42 +09001005extern bool ata_link_online(struct ata_link *link);
1006extern bool ata_link_offline(struct ata_link *link);
Tejun Heo6ffa01d2007-03-02 17:32:47 +09001007#ifdef CONFIG_PM
Jeff Garzikcca39742006-08-24 03:19:22 -04001008extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
1009extern void ata_host_resume(struct ata_host *host);
Tejun Heo6ffa01d2007-03-02 17:32:47 +09001010#endif
Jeff Garzik67846b32005-10-05 02:58:32 -04001011extern int ata_ratelimit(void);
Tejun Heo97750ce2010-09-06 17:56:29 +02001012extern void ata_msleep(struct ata_port *ap, unsigned int msecs);
1013extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask,
1014 u32 val, unsigned long interval, unsigned long timeout);
Tejun Heo436d34b2008-04-02 17:28:46 +09001015extern int atapi_cmd_type(u8 opcode);
Tejun Heo99771262007-07-16 14:29:38 +09001016extern void ata_tf_to_fis(const struct ata_taskfile *tf,
1017 u8 pmp, int is_cmd, u8 *fis);
Jeff Garzik057ace52005-10-22 14:27:05 -04001018extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
Tejun Heo7dc951a2007-11-27 19:43:42 +09001019extern unsigned long ata_pack_xfermask(unsigned long pio_mask,
1020 unsigned long mwdma_mask, unsigned long udma_mask);
1021extern void ata_unpack_xfermask(unsigned long xfer_mask,
1022 unsigned long *pio_mask, unsigned long *mwdma_mask,
1023 unsigned long *udma_mask);
1024extern u8 ata_xfer_mask2mode(unsigned long xfer_mask);
1025extern unsigned long ata_xfer_mode2mask(u8 xfer_mode);
1026extern int ata_xfer_mode2shift(unsigned long xfer_mode);
1027extern const char *ata_mode_string(unsigned long xfer_mask);
1028extern unsigned long ata_id_xfermask(const u16 *id);
Tejun Heo31cc23b2007-09-23 13:14:12 +09001029extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
Brian Kinge46834c2006-03-17 17:04:03 -06001030extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001031extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
1032 unsigned int n_elem);
Jeff Garzik057ace52005-10-22 14:27:05 -04001033extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
Alan10305f02007-02-20 18:01:59 +00001034extern void ata_dev_disable(struct ata_device *adev);
Tejun Heo6a62a042006-02-13 10:02:46 +09001035extern void ata_id_string(const u16 *id, unsigned char *s,
1036 unsigned int ofs, unsigned int len);
1037extern void ata_id_c_string(const u16 *id, unsigned char *s,
1038 unsigned int ofs, unsigned int len);
Alan Cox963e4972008-07-24 17:16:06 +01001039extern unsigned int ata_do_dev_read_id(struct ata_device *dev,
1040 struct ata_taskfile *tf, u16 *id);
Tejun Heof686bcb2006-05-15 20:58:05 +09001041extern void ata_qc_complete(struct ata_queued_cmd *qc);
Tejun Heo79f97da2008-04-07 22:47:20 +09001042extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active);
Tejun Heo3373efd2006-05-15 20:57:53 +09001043extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001044 void (*done)(struct scsi_cmnd *));
1045extern int ata_std_bios_param(struct scsi_device *sdev,
1046 struct block_device *bdev,
1047 sector_t capacity, int geom[]);
Tejun Heod8d91292010-05-15 20:09:34 +02001048extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001049extern int ata_scsi_slave_config(struct scsi_device *sdev);
Tejun Heo83c47bc2006-05-31 18:28:07 +09001050extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
Tejun Heoa6e6ce82006-05-15 21:03:48 +09001051extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
Mike Christiee881a172009-10-15 17:46:39 -07001052 int queue_depth, int reason);
Tejun Heo3373efd2006-05-15 20:57:53 +09001053extern struct ata_device *ata_dev_pair(struct ata_device *adev);
Tejun Heo02607312007-08-06 18:36:23 +09001054extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001055
Alan Coxbe0d18d2007-03-06 02:37:56 -08001056extern int ata_cable_40wire(struct ata_port *ap);
1057extern int ata_cable_80wire(struct ata_port *ap);
1058extern int ata_cable_sata(struct ata_port *ap);
Tejun Heoc88f90c2007-11-27 19:43:48 +09001059extern int ata_cable_ignore(struct ata_port *ap);
Alan Coxbe0d18d2007-03-06 02:37:56 -08001060extern int ata_cable_unknown(struct ata_port *ap);
1061
Tejun Heo624d5c52008-03-25 22:16:41 +09001062/* Timing helpers */
Alan Cox1bc4ccf2006-01-09 17:18:14 +00001063extern unsigned int ata_pio_need_iordy(const struct ata_device *);
Tejun Heo63573572007-11-27 19:43:39 +09001064extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
Alan Cox452503f2005-10-21 19:01:32 -04001065extern int ata_timing_compute(struct ata_device *, unsigned short,
1066 struct ata_timing *, int, int);
1067extern void ata_timing_merge(const struct ata_timing *,
1068 const struct ata_timing *, struct ata_timing *,
1069 unsigned int);
Tejun Heoa0f79b92007-12-18 16:33:05 +09001070extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);
Alan Cox452503f2005-10-21 19:01:32 -04001071
Tejun Heo624d5c52008-03-25 22:16:41 +09001072/* PCI */
1073#ifdef CONFIG_PCI
1074struct pci_dev;
1075
1076struct pci_bits {
1077 unsigned int reg; /* PCI config register to read */
1078 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
1079 unsigned long mask;
1080 unsigned long val;
Alan Cox452503f2005-10-21 19:01:32 -04001081};
1082
Tejun Heo624d5c52008-03-25 22:16:41 +09001083extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
1084extern void ata_pci_remove_one(struct pci_dev *pdev);
1085
1086#ifdef CONFIG_PM
1087extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
1088extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
1089extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
1090extern int ata_pci_device_resume(struct pci_dev *pdev);
1091#endif /* CONFIG_PM */
1092#endif /* CONFIG_PCI */
1093
1094/*
1095 * ACPI - drivers/ata/libata-acpi.c
1096 */
Alan Coxe1ddb4b2007-08-16 02:33:36 -04001097#ifdef CONFIG_ATA_ACPI
Tejun Heoc05e6ff2007-12-15 15:05:02 +09001098static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1099{
1100 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
1101 return &ap->__acpi_init_gtm;
1102 return NULL;
1103}
Tejun Heo0d02f0b2007-12-15 15:04:57 +09001104int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
1105int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
Tejun Heo7c77fa42007-12-18 16:33:03 +09001106unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev,
1107 const struct ata_acpi_gtm *gtm);
Tejun Heo021ee9a2007-12-18 16:33:06 +09001108int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm);
Alan Coxe1ddb4b2007-08-16 02:33:36 -04001109#else
Tejun Heoc05e6ff2007-12-15 15:05:02 +09001110static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1111{
1112 return NULL;
1113}
Tejun Heo7c77fa42007-12-18 16:33:03 +09001114
1115static inline int ata_acpi_stm(const struct ata_port *ap,
1116 struct ata_acpi_gtm *stm)
1117{
1118 return -ENOSYS;
1119}
1120
1121static inline int ata_acpi_gtm(const struct ata_port *ap,
1122 struct ata_acpi_gtm *stm)
1123{
1124 return -ENOSYS;
1125}
1126
1127static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
1128 const struct ata_acpi_gtm *gtm)
1129{
1130 return 0;
1131}
Tejun Heo021ee9a2007-12-18 16:33:06 +09001132
1133static inline int ata_acpi_cbl_80wire(struct ata_port *ap,
1134 const struct ata_acpi_gtm *gtm)
1135{
1136 return 0;
1137}
Alan Coxe1ddb4b2007-08-16 02:33:36 -04001138#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001139
Tejun Heoece1d632006-04-02 18:51:53 +09001140/*
Tejun Heo624d5c52008-03-25 22:16:41 +09001141 * EH - drivers/ata/libata-eh.c
Tejun Heoece1d632006-04-02 18:51:53 +09001142 */
Tejun Heo7b70fc02006-05-15 20:58:07 +09001143extern void ata_port_schedule_eh(struct ata_port *ap);
Tejun Heodbd82612007-08-06 18:36:23 +09001144extern int ata_link_abort(struct ata_link *link);
Tejun Heo7b70fc02006-05-15 20:58:07 +09001145extern int ata_port_abort(struct ata_port *ap);
Tejun Heoe3180492006-05-15 20:58:09 +09001146extern int ata_port_freeze(struct ata_port *ap);
Tejun Heo7d77b242007-09-23 13:14:13 +09001147extern int sata_async_notification(struct ata_port *ap);
Tejun Heoe3180492006-05-15 20:58:09 +09001148
1149extern void ata_eh_freeze_port(struct ata_port *ap);
1150extern void ata_eh_thaw_port(struct ata_port *ap);
Tejun Heo7b70fc02006-05-15 20:58:07 +09001151
Tejun Heoece1d632006-04-02 18:51:53 +09001152extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
1153extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
Mark Lord10acf3b2008-05-02 02:14:53 -04001154extern void ata_eh_analyze_ncq_error(struct ata_link *link);
Tejun Heoece1d632006-04-02 18:51:53 +09001155
Tejun Heof5914a42006-05-31 18:27:48 +09001156extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
1157 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
1158 ata_postreset_fn_t postreset);
Tejun Heoa1efdab2008-03-25 12:22:50 +09001159extern void ata_std_error_handler(struct ata_port *ap);
Tejun Heo022bdb02006-05-15 20:58:22 +09001160
Tejun Heo61440db2006-05-15 20:57:55 +09001161/*
Tejun Heo68d1d072008-03-25 12:22:49 +09001162 * Base operations to inherit from and initializers for sht
1163 *
1164 * Operations
1165 *
1166 * base : Common to all libata drivers.
1167 * sata : SATA controllers w/ native interface.
1168 * pmp : SATA controllers w/ PMP support.
1169 * sff : SFF ATA controllers w/o BMDMA support.
1170 * bmdma : SFF ATA controllers w/ BMDMA support.
1171 *
1172 * sht initializers
1173 *
1174 * BASE : Common to all libata drivers. The user must set
1175 * sg_tablesize and dma_boundary.
1176 * PIO : SFF ATA controllers w/ only PIO support.
1177 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and
1178 * dma_boundary are set to BMDMA limits.
1179 * NCQ : SATA controllers supporting NCQ. The user must set
1180 * sg_tablesize, dma_boundary and can_queue.
1181 */
1182extern const struct ata_port_operations ata_base_port_ops;
1183extern const struct ata_port_operations sata_port_ops;
Elias Oltmanns45fabbb2008-09-21 11:54:08 +02001184extern struct device_attribute *ata_common_sdev_attrs[];
Tejun Heo68d1d072008-03-25 12:22:49 +09001185
1186#define ATA_BASE_SHT(drv_name) \
1187 .module = THIS_MODULE, \
1188 .name = drv_name, \
1189 .ioctl = ata_scsi_ioctl, \
1190 .queuecommand = ata_scsi_queuecmd, \
1191 .can_queue = ATA_DEF_QUEUE, \
1192 .this_id = ATA_SHT_THIS_ID, \
1193 .cmd_per_lun = ATA_SHT_CMD_PER_LUN, \
1194 .emulated = ATA_SHT_EMULATED, \
1195 .use_clustering = ATA_SHT_USE_CLUSTERING, \
1196 .proc_name = drv_name, \
1197 .slave_configure = ata_scsi_slave_config, \
1198 .slave_destroy = ata_scsi_slave_destroy, \
Elias Oltmanns45fabbb2008-09-21 11:54:08 +02001199 .bios_param = ata_std_bios_param, \
Tejun Heod8d91292010-05-15 20:09:34 +02001200 .unlock_native_capacity = ata_scsi_unlock_native_capacity, \
Elias Oltmanns45fabbb2008-09-21 11:54:08 +02001201 .sdev_attrs = ata_common_sdev_attrs
Tejun Heo68d1d072008-03-25 12:22:49 +09001202
Tejun Heo68d1d072008-03-25 12:22:49 +09001203#define ATA_NCQ_SHT(drv_name) \
1204 ATA_BASE_SHT(drv_name), \
1205 .change_queue_depth = ata_scsi_change_queue_depth
1206
1207/*
Tejun Heo071f44b2008-04-07 22:47:22 +09001208 * PMP helpers
1209 */
Tejun Heo88fcd562008-04-07 22:47:22 +09001210#ifdef CONFIG_SATA_PMP
Tejun Heo071f44b2008-04-07 22:47:22 +09001211static inline bool sata_pmp_supported(struct ata_port *ap)
1212{
1213 return ap->flags & ATA_FLAG_PMP;
1214}
1215
1216static inline bool sata_pmp_attached(struct ata_port *ap)
1217{
1218 return ap->nr_pmp_links != 0;
1219}
1220
1221static inline int ata_is_host_link(const struct ata_link *link)
1222{
Tejun Heob1c72912008-07-31 17:02:43 +09001223 return link == &link->ap->link || link == link->ap->slave_link;
Tejun Heo071f44b2008-04-07 22:47:22 +09001224}
Tejun Heo88fcd562008-04-07 22:47:22 +09001225#else /* CONFIG_SATA_PMP */
1226static inline bool sata_pmp_supported(struct ata_port *ap)
1227{
1228 return false;
1229}
1230
1231static inline bool sata_pmp_attached(struct ata_port *ap)
1232{
1233 return false;
1234}
1235
1236static inline int ata_is_host_link(const struct ata_link *link)
1237{
1238 return 1;
1239}
1240#endif /* CONFIG_SATA_PMP */
Tejun Heo071f44b2008-04-07 22:47:22 +09001241
1242static inline int sata_srst_pmp(struct ata_link *link)
1243{
1244 if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
1245 return SATA_PMP_CTRL_PORT;
1246 return link->pmp;
1247}
1248
1249/*
Tejun Heo61440db2006-05-15 20:57:55 +09001250 * printk helpers
1251 */
1252#define ata_port_printk(ap, lv, fmt, args...) \
Tejun Heoc2e366a2007-12-15 15:04:58 +09001253 printk("%sata%u: "fmt, lv, (ap)->print_id , ##args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001254
Tejun Heo89898052007-08-06 18:36:23 +09001255#define ata_link_printk(link, lv, fmt, args...) do { \
Tejun Heob1c72912008-07-31 17:02:43 +09001256 if (sata_pmp_attached((link)->ap) || (link)->ap->slave_link) \
Tejun Heoc2e366a2007-12-15 15:04:58 +09001257 printk("%sata%u.%02u: "fmt, lv, (link)->ap->print_id, \
Tejun Heo89898052007-08-06 18:36:23 +09001258 (link)->pmp , ##args); \
1259 else \
Tejun Heoc2e366a2007-12-15 15:04:58 +09001260 printk("%sata%u: "fmt, lv, (link)->ap->print_id , ##args); \
Tejun Heo89898052007-08-06 18:36:23 +09001261 } while(0)
Tejun Heo9af5c9c2007-08-06 18:36:22 +09001262
Tejun Heo61440db2006-05-15 20:57:55 +09001263#define ata_dev_printk(dev, lv, fmt, args...) \
Tejun Heoc2e366a2007-12-15 15:04:58 +09001264 printk("%sata%u.%02u: "fmt, lv, (dev)->link->ap->print_id, \
Tejun Heo89898052007-08-06 18:36:23 +09001265 (dev)->link->pmp + (dev)->devno , ##args)
Tejun Heo61440db2006-05-15 20:57:55 +09001266
1267/*
Tejun Heof3e81b12006-05-15 20:58:21 +09001268 * ata_eh_info helpers
1269 */
Tejun Heocb94c1c2007-07-30 14:24:15 +09001270extern void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...)
1271 __attribute__ ((format (printf, 2, 3)));
1272extern void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...)
1273 __attribute__ ((format (printf, 2, 3)));
Tejun Heob64bbc32007-07-16 14:29:39 +09001274extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
Tejun Heof3e81b12006-05-15 20:58:21 +09001275
Tejun Heoc0b6c032006-07-03 16:07:26 +09001276static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
1277{
Tejun Heob558edd2008-01-24 00:05:14 +09001278 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
Tejun Heof8f1e1c2007-07-16 14:29:40 +09001279 ehi->flags |= ATA_EHI_HOTPLUGGED;
Tejun Heob558edd2008-01-24 00:05:14 +09001280 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;
Tejun Heoc0b6c032006-07-03 16:07:26 +09001281 ehi->err_mask |= AC_ERR_ATA_BUS;
1282}
1283
Tejun Heof3e81b12006-05-15 20:58:21 +09001284/*
Tejun Heocbcdd872007-08-18 13:14:55 +09001285 * port description helpers
1286 */
1287extern void ata_port_desc(struct ata_port *ap, const char *fmt, ...)
1288 __attribute__ ((format (printf, 2, 3)));
1289#ifdef CONFIG_PCI
1290extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
1291 const char *name);
1292#endif
1293
Linus Torvalds1da177e2005-04-16 15:20:36 -07001294static inline unsigned int ata_tag_valid(unsigned int tag)
1295{
1296 return (tag < ATA_MAX_QUEUE) ? 1 : 0;
1297}
1298
Tejun Heo2ab7db12006-05-15 20:58:02 +09001299static inline unsigned int ata_tag_internal(unsigned int tag)
1300{
Yoichi Yuasa83c063d2008-02-28 21:43:13 +09001301 return tag == ATA_TAG_INTERNAL;
Tejun Heo2ab7db12006-05-15 20:58:02 +09001302}
1303
Tejun Heo5806db22006-06-24 20:30:19 +09001304/*
1305 * device helpers
1306 */
Tejun Heoe1211e32006-04-01 01:38:18 +09001307static inline unsigned int ata_class_enabled(unsigned int class)
Tejun Heo597afd22006-03-01 01:25:38 +09001308{
Tejun Heoe0a71752007-09-23 13:14:12 +09001309 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
1310 class == ATA_DEV_PMP || class == ATA_DEV_SEMB;
Tejun Heo597afd22006-03-01 01:25:38 +09001311}
1312
Tejun Heoe1211e32006-04-01 01:38:18 +09001313static inline unsigned int ata_class_disabled(unsigned int class)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001314{
Tejun Heoe0a71752007-09-23 13:14:12 +09001315 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
1316 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP;
Tejun Heoe1211e32006-04-01 01:38:18 +09001317}
1318
Tejun Heo002c8052006-04-02 17:54:46 +09001319static inline unsigned int ata_class_absent(unsigned int class)
1320{
1321 return !ata_class_enabled(class) && !ata_class_disabled(class);
1322}
1323
Tejun Heoe1211e32006-04-01 01:38:18 +09001324static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
1325{
1326 return ata_class_enabled(dev->class);
1327}
1328
1329static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
1330{
1331 return ata_class_disabled(dev->class);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001332}
1333
Tejun Heo002c8052006-04-02 17:54:46 +09001334static inline unsigned int ata_dev_absent(const struct ata_device *dev)
1335{
1336 return ata_class_absent(dev->class);
1337}
1338
Tejun Heo5806db22006-06-24 20:30:19 +09001339/*
Tejun Heof58229f2007-08-06 18:36:23 +09001340 * link helpers
Tejun Heo5806db22006-06-24 20:30:19 +09001341 */
Tejun Heof58229f2007-08-06 18:36:23 +09001342static inline int ata_link_max_devices(const struct ata_link *link)
Tejun Heo5806db22006-06-24 20:30:19 +09001343{
Tejun Heo89898052007-08-06 18:36:23 +09001344 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS)
Tejun Heo5806db22006-06-24 20:30:19 +09001345 return 2;
1346 return 1;
1347}
1348
Tejun Heoda917d62007-09-23 13:14:12 +09001349static inline int ata_link_active(struct ata_link *link)
1350{
1351 return ata_tag_valid(link->active_tag) || link->sactive;
1352}
1353
Tejun Heo1eca4362008-11-03 20:03:17 +09001354/*
1355 * Iterators
1356 *
1357 * ATA_LITER_* constants are used to select link iteration mode and
1358 * ATA_DITER_* device iteration mode.
1359 *
1360 * For a custom iteration directly using ata_{link|dev}_next(), if
1361 * @link or @dev, respectively, is NULL, the first element is
1362 * returned. @dev and @link can be any valid device or link and the
1363 * next element according to the iteration mode will be returned.
1364 * After the last element, NULL is returned.
1365 */
1366enum ata_link_iter_mode {
1367 ATA_LITER_EDGE, /* if present, PMP links only; otherwise,
1368 * host link. no slave link */
1369 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */
1370 ATA_LITER_PMP_FIRST, /* PMP links followed by host link,
1371 * slave link still comes after host link */
1372};
Tejun Heo89898052007-08-06 18:36:23 +09001373
Tejun Heo1eca4362008-11-03 20:03:17 +09001374enum ata_dev_iter_mode {
1375 ATA_DITER_ENABLED,
1376 ATA_DITER_ENABLED_REVERSE,
1377 ATA_DITER_ALL,
1378 ATA_DITER_ALL_REVERSE,
1379};
Tejun Heo89898052007-08-06 18:36:23 +09001380
Tejun Heo1eca4362008-11-03 20:03:17 +09001381extern struct ata_link *ata_link_next(struct ata_link *link,
1382 struct ata_port *ap,
1383 enum ata_link_iter_mode mode);
Tejun Heof58229f2007-08-06 18:36:23 +09001384
Tejun Heo1eca4362008-11-03 20:03:17 +09001385extern struct ata_device *ata_dev_next(struct ata_device *dev,
1386 struct ata_link *link,
1387 enum ata_dev_iter_mode mode);
Tejun Heof58229f2007-08-06 18:36:23 +09001388
Tejun Heo1eca4362008-11-03 20:03:17 +09001389/*
1390 * Shortcut notation for iterations
1391 *
1392 * ata_for_each_link() iterates over each link of @ap according to
1393 * @mode. @link points to the current link in the loop. @link is
1394 * NULL after loop termination. ata_for_each_dev() works the same way
1395 * except that it iterates over each device of @link.
1396 *
1397 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be
1398 * specified when using the following shorthand notations. Only the
1399 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be
1400 * specified. This not only increases brevity but also makes it
1401 * impossible to use ATA_LITER_* for device iteration or vice-versa.
1402 */
1403#define ata_for_each_link(link, ap, mode) \
1404 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1405 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1406
1407#define ata_for_each_dev(dev, link, mode) \
1408 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1409 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
Tejun Heo5806db22006-06-24 20:30:19 +09001410
Tejun Heo6d1245b2007-02-20 23:20:27 +09001411/**
1412 * ata_ncq_enabled - Test whether NCQ is enabled
1413 * @dev: ATA device to test for
1414 *
1415 * LOCKING:
1416 * spin_lock_irqsave(host lock)
1417 *
1418 * RETURNS:
1419 * 1 if NCQ is enabled for @dev, 0 otherwise.
1420 */
1421static inline int ata_ncq_enabled(struct ata_device *dev)
1422{
1423 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF |
1424 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
1425}
Edward Falk0baab862005-06-02 18:17:13 -04001426
Linus Torvalds1da177e2005-04-16 15:20:36 -07001427static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
1428{
1429 qc->tf.ctl |= ATA_NIEN;
1430}
1431
Tejun Heof69499f2006-05-15 20:58:03 +09001432static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
1433 unsigned int tag)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001434{
1435 if (likely(ata_tag_valid(tag)))
1436 return &ap->qcmd[tag];
1437 return NULL;
1438}
1439
Tejun Heof69499f2006-05-15 20:58:03 +09001440static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
1441 unsigned int tag)
1442{
1443 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
1444
1445 if (unlikely(!qc) || !ap->ops->error_handler)
1446 return qc;
1447
1448 if ((qc->flags & (ATA_QCFLAG_ACTIVE |
1449 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE)
1450 return qc;
1451
1452 return NULL;
1453}
1454
Tejun Heoaacda372008-03-18 17:47:43 +09001455static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc)
1456{
1457 return qc->nbytes - min(qc->extrabytes, qc->nbytes);
1458}
1459
Tejun Heo3373efd2006-05-15 20:57:53 +09001460static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001461{
1462 memset(tf, 0, sizeof(*tf));
1463
Tejun Heo5fe74542010-05-10 21:41:37 +02001464#ifdef CONFIG_ATA_SFF
Tejun Heo9af5c9c2007-08-06 18:36:22 +09001465 tf->ctl = dev->link->ap->ctl;
Tejun Heo5fe74542010-05-10 21:41:37 +02001466#else
1467 tf->ctl = ATA_DEVCTL_OBS;
1468#endif
Tejun Heo3373efd2006-05-15 20:57:53 +09001469 if (dev->devno == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001470 tf->device = ATA_DEVICE_OBS;
1471 else
1472 tf->device = ATA_DEVICE_OBS | ATA_DEV1;
1473}
1474
Jeff Garzik2c13b7c2005-11-14 14:14:16 -05001475static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
1476{
Tejun Heo501e0c502007-01-17 11:34:02 +09001477 qc->dma_dir = DMA_NONE;
Tejun Heoff2aeb12007-12-05 16:43:11 +09001478 qc->sg = NULL;
Jeff Garzik2c13b7c2005-11-14 14:14:16 -05001479 qc->flags = 0;
Jens Axboe87260212007-10-16 11:14:12 +02001480 qc->cursg = NULL;
1481 qc->cursg_ofs = 0;
Tejun Heoaacda372008-03-18 17:47:43 +09001482 qc->nbytes = qc->extrabytes = qc->curbytes = 0;
Brian King7a801182007-01-17 12:32:12 -06001483 qc->n_elem = 0;
Albert Leea22e2eb2005-12-05 15:38:02 +08001484 qc->err_mask = 0;
Mark Lord5a5dbd12007-03-16 10:22:26 -04001485 qc->sect_size = ATA_SECT_SIZE;
Jeff Garzik2c13b7c2005-11-14 14:14:16 -05001486
Tejun Heo3373efd2006-05-15 20:57:53 +09001487 ata_tf_init(qc->dev, &qc->tf);
Tejun Heoe61e0672006-05-15 20:57:40 +09001488
1489 /* init result_tf such that it indicates normal completion */
1490 qc->result_tf.command = ATA_DRDY;
1491 qc->result_tf.feature = 0;
Jeff Garzik2c13b7c2005-11-14 14:14:16 -05001492}
1493
Jeff Garzik057ace52005-10-22 14:27:05 -04001494static inline int ata_try_flush_cache(const struct ata_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001495{
1496 return ata_id_wcache_enabled(dev->id) ||
1497 ata_id_has_flush(dev->id) ||
1498 ata_id_has_flush_ext(dev->id);
1499}
1500
Jeff Garzika7dac442005-10-30 04:44:42 -05001501static inline unsigned int ac_err_mask(u8 status)
1502{
Albert Lee3655d1d2006-05-19 11:43:04 +08001503 if (status & (ATA_BUSY | ATA_DRQ))
Tejun Heo11a56d22006-01-23 13:09:36 +09001504 return AC_ERR_HSM;
Jeff Garzika7dac442005-10-30 04:44:42 -05001505 if (status & (ATA_ERR | ATA_DF))
1506 return AC_ERR_DEV;
1507 return 0;
1508}
1509
1510static inline unsigned int __ac_err_mask(u8 status)
1511{
1512 unsigned int mask = ac_err_mask(status);
1513 if (mask == 0)
1514 return AC_ERR_OTHER;
1515 return mask;
1516}
1517
Jeff Garzik35bb94b2006-04-11 13:12:34 -04001518static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
1519{
Tejun Heo49114872007-04-17 23:44:06 +09001520 return *(struct ata_port **)&host->hostdata[0];
Jeff Garzik35bb94b2006-04-11 13:12:34 -04001521}
1522
Tejun Heo78ab88f2008-05-01 23:41:41 +09001523static inline int ata_check_ready(u8 status)
1524{
Jeff Garzik005b1f72008-05-09 15:00:55 -04001525 if (!(status & ATA_BUSY))
1526 return 1;
Tejun Heo78ab88f2008-05-01 23:41:41 +09001527
1528 /* 0xff indicates either no device or device not ready */
1529 if (status == 0xff)
1530 return -ENODEV;
1531
Jeff Garzik005b1f72008-05-09 15:00:55 -04001532 return 0;
Tejun Heo78ab88f2008-05-01 23:41:41 +09001533}
1534
Tejun Heo341c2c92008-05-20 02:17:51 +09001535static inline unsigned long ata_deadline(unsigned long from_jiffies,
1536 unsigned long timeout_msecs)
1537{
1538 return from_jiffies + msecs_to_jiffies(timeout_msecs);
1539}
1540
Alan Coxb15b3eb2008-08-01 09:18:34 +01001541/* Don't open code these in drivers as there are traps. Firstly the range may
1542 change in future hardware and specs, secondly 0xFF means 'no DMA' but is
1543 > UDMA_0. Dyma ddreigiau */
1544
1545static inline int ata_using_mwdma(struct ata_device *adev)
1546{
1547 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4)
1548 return 1;
1549 return 0;
1550}
1551
1552static inline int ata_using_udma(struct ata_device *adev)
1553{
1554 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7)
1555 return 1;
1556 return 0;
1557}
1558
1559static inline int ata_dma_enabled(struct ata_device *adev)
1560{
1561 return (adev->dma_mode == 0xFF ? 0 : 1);
1562}
Tejun Heo48515f62008-04-07 22:47:21 +09001563
1564/**************************************************************************
1565 * PMP - drivers/ata/libata-pmp.c
1566 */
Tejun Heo88fcd562008-04-07 22:47:22 +09001567#ifdef CONFIG_SATA_PMP
1568
Tejun Heo48515f62008-04-07 22:47:21 +09001569extern const struct ata_port_operations sata_pmp_port_ops;
1570
1571extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
1572extern void sata_pmp_error_handler(struct ata_port *ap);
1573
Tejun Heo88fcd562008-04-07 22:47:22 +09001574#else /* CONFIG_SATA_PMP */
1575
1576#define sata_pmp_port_ops sata_port_ops
1577#define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1578#define sata_pmp_error_handler ata_std_error_handler
1579
1580#endif /* CONFIG_SATA_PMP */
1581
Tejun Heo48515f62008-04-07 22:47:21 +09001582
Tejun Heo624d5c52008-03-25 22:16:41 +09001583/**************************************************************************
1584 * SFF - drivers/ata/libata-sff.c
1585 */
Tejun Heo127102a2008-04-07 22:47:21 +09001586#ifdef CONFIG_ATA_SFF
1587
Tejun Heo624d5c52008-03-25 22:16:41 +09001588extern const struct ata_port_operations ata_sff_port_ops;
Alan Cox871af122009-01-05 14:16:39 +00001589extern const struct ata_port_operations ata_bmdma32_port_ops;
Tejun Heo624d5c52008-03-25 22:16:41 +09001590
1591/* PIO only, sg_tablesize and dma_boundary limits can be removed */
1592#define ATA_PIO_SHT(drv_name) \
1593 ATA_BASE_SHT(drv_name), \
1594 .sg_tablesize = LIBATA_MAX_PRD, \
1595 .dma_boundary = ATA_DMA_BOUNDARY
1596
Tejun Heo9363c382008-04-07 22:47:16 +09001597extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
1598extern u8 ata_sff_check_status(struct ata_port *ap);
Alan Coxa57c1ba2008-05-29 22:10:58 +01001599extern void ata_sff_pause(struct ata_port *ap);
1600extern void ata_sff_dma_pause(struct ata_port *ap);
Tejun Heo9363c382008-04-07 22:47:16 +09001601extern int ata_sff_busy_sleep(struct ata_port *ap,
1602 unsigned long timeout_pat, unsigned long timeout);
Tejun Heo705e76b2008-04-07 22:47:19 +09001603extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline);
Tejun Heo9363c382008-04-07 22:47:16 +09001604extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
1605extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
1606extern void ata_sff_exec_command(struct ata_port *ap,
1607 const struct ata_taskfile *tf);
1608extern unsigned int ata_sff_data_xfer(struct ata_device *dev,
Tejun Heo624d5c52008-03-25 22:16:41 +09001609 unsigned char *buf, unsigned int buflen, int rw);
Alan Cox871af122009-01-05 14:16:39 +00001610extern unsigned int ata_sff_data_xfer32(struct ata_device *dev,
1611 unsigned char *buf, unsigned int buflen, int rw);
Tejun Heo9363c382008-04-07 22:47:16 +09001612extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev,
Tejun Heo624d5c52008-03-25 22:16:41 +09001613 unsigned char *buf, unsigned int buflen, int rw);
Sergei Shtylyove42a5422010-05-07 22:49:02 +04001614extern void ata_sff_irq_on(struct ata_port *ap);
Tejun Heo9363c382008-04-07 22:47:16 +09001615extern void ata_sff_irq_clear(struct ata_port *ap);
1616extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
1617 u8 status, int in_wq);
Gwendal Grignouea3c6452010-08-31 16:20:36 -07001618extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay);
Tejun Heo9363c382008-04-07 22:47:16 +09001619extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
Tejun Heo22183bf2008-04-07 22:47:20 +09001620extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
Tejun Heoc3b28892010-05-19 22:10:21 +02001621extern unsigned int ata_sff_port_intr(struct ata_port *ap,
Tejun Heo9363c382008-04-07 22:47:16 +09001622 struct ata_queued_cmd *qc);
1623extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
Alan Coxc96f1732009-03-24 10:23:46 +00001624extern void ata_sff_lost_interrupt(struct ata_port *ap);
Tejun Heo9363c382008-04-07 22:47:16 +09001625extern void ata_sff_freeze(struct ata_port *ap);
1626extern void ata_sff_thaw(struct ata_port *ap);
1627extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
1628extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
1629 u8 *r_err);
Tejun Heo705e76b2008-04-07 22:47:19 +09001630extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
1631 unsigned long deadline);
Tejun Heo9363c382008-04-07 22:47:16 +09001632extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
Tejun Heo624d5c52008-03-25 22:16:41 +09001633 unsigned long deadline);
Tejun Heo9363c382008-04-07 22:47:16 +09001634extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
1635 unsigned long deadline);
1636extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
Alan Cox3d47aa82009-03-24 10:23:19 +00001637extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
Tejun Heo9363c382008-04-07 22:47:16 +09001638extern void ata_sff_error_handler(struct ata_port *ap);
Tejun Heo9363c382008-04-07 22:47:16 +09001639extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
Tejun Heo624d5c52008-03-25 22:16:41 +09001640#ifdef CONFIG_PCI
Tejun Heo9363c382008-04-07 22:47:16 +09001641extern int ata_pci_sff_init_host(struct ata_host *host);
1642extern int ata_pci_sff_prepare_host(struct pci_dev *pdev,
Tejun Heo624d5c52008-03-25 22:16:41 +09001643 const struct ata_port_info * const * ppi,
1644 struct ata_host **r_host);
Tejun Heo9363c382008-04-07 22:47:16 +09001645extern int ata_pci_sff_activate_host(struct ata_host *host,
Tejun Heo624d5c52008-03-25 22:16:41 +09001646 irq_handler_t irq_handler,
1647 struct scsi_host_template *sht);
Tejun Heo9363c382008-04-07 22:47:16 +09001648extern int ata_pci_sff_init_one(struct pci_dev *pdev,
Alan Cox16ea0fc2010-02-23 02:26:06 -05001649 const struct ata_port_info * const * ppi,
1650 struct scsi_host_template *sht, void *host_priv, int hflags);
Tejun Heo624d5c52008-03-25 22:16:41 +09001651#endif /* CONFIG_PCI */
1652
Tejun Heo9a7780c2010-05-19 22:10:24 +02001653#ifdef CONFIG_ATA_BMDMA
1654
1655extern const struct ata_port_operations ata_bmdma_port_ops;
1656
1657#define ATA_BMDMA_SHT(drv_name) \
1658 ATA_BASE_SHT(drv_name), \
1659 .sg_tablesize = LIBATA_MAX_PRD, \
1660 .dma_boundary = ATA_DMA_BOUNDARY
1661
Tejun Heof47451c2010-05-10 21:41:40 +02001662extern void ata_bmdma_qc_prep(struct ata_queued_cmd *qc);
Tejun Heo360ff782010-05-10 21:41:42 +02001663extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc);
Tejun Heof47451c2010-05-10 21:41:40 +02001664extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc);
Tejun Heoc3b28892010-05-19 22:10:21 +02001665extern unsigned int ata_bmdma_port_intr(struct ata_port *ap,
1666 struct ata_queued_cmd *qc);
1667extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance);
Tejun Heofe06e5f2010-05-10 21:41:39 +02001668extern void ata_bmdma_error_handler(struct ata_port *ap);
1669extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
Tejun Heo37f65b82010-05-19 22:10:20 +02001670extern void ata_bmdma_irq_clear(struct ata_port *ap);
Tejun Heo9f2f7212010-05-10 21:41:32 +02001671extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
1672extern void ata_bmdma_start(struct ata_queued_cmd *qc);
1673extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
1674extern u8 ata_bmdma_status(struct ata_port *ap);
Tejun Heoc7087652010-05-10 21:41:34 +02001675extern int ata_bmdma_port_start(struct ata_port *ap);
1676extern int ata_bmdma_port_start32(struct ata_port *ap);
Tejun Heo9f2f7212010-05-10 21:41:32 +02001677
1678#ifdef CONFIG_PCI
1679extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
Tejun Heoc7087652010-05-10 21:41:34 +02001680extern void ata_pci_bmdma_init(struct ata_host *host);
Tejun Heo1c5afdf2010-05-19 22:10:22 +02001681extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev,
1682 const struct ata_port_info * const * ppi,
1683 struct ata_host **r_host);
1684extern int ata_pci_bmdma_init_one(struct pci_dev *pdev,
1685 const struct ata_port_info * const * ppi,
1686 struct scsi_host_template *sht,
1687 void *host_priv, int hflags);
Tejun Heo9f2f7212010-05-10 21:41:32 +02001688#endif /* CONFIG_PCI */
Tejun Heo9a7780c2010-05-19 22:10:24 +02001689#endif /* CONFIG_ATA_BMDMA */
Tejun Heo9f2f7212010-05-10 21:41:32 +02001690
Tejun Heo624d5c52008-03-25 22:16:41 +09001691/**
Tejun Heo9363c382008-04-07 22:47:16 +09001692 * ata_sff_busy_wait - Wait for a port status register
Tejun Heo624d5c52008-03-25 22:16:41 +09001693 * @ap: Port to wait for.
1694 * @bits: bits that must be clear
1695 * @max: number of 10uS waits to perform
1696 *
1697 * Waits up to max*10 microseconds for the selected bits in the port's
1698 * status register to be cleared.
1699 * Returns final value of status register.
1700 *
1701 * LOCKING:
1702 * Inherited from caller.
1703 */
Tejun Heo9363c382008-04-07 22:47:16 +09001704static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits,
1705 unsigned int max)
Tejun Heo624d5c52008-03-25 22:16:41 +09001706{
1707 u8 status;
1708
1709 do {
1710 udelay(10);
Tejun Heo5682ed32008-04-07 22:47:16 +09001711 status = ap->ops->sff_check_status(ap);
Tejun Heo624d5c52008-03-25 22:16:41 +09001712 max--;
1713 } while (status != 0xff && (status & bits) && (max > 0));
1714
1715 return status;
1716}
1717
1718/**
1719 * ata_wait_idle - Wait for a port to be idle.
1720 * @ap: Port to wait for.
1721 *
1722 * Waits up to 10ms for port's BUSY and DRQ signals to clear.
1723 * Returns final value of status register.
1724 *
1725 * LOCKING:
1726 * Inherited from caller.
1727 */
1728static inline u8 ata_wait_idle(struct ata_port *ap)
1729{
Tejun Heo9363c382008-04-07 22:47:16 +09001730 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
Tejun Heo624d5c52008-03-25 22:16:41 +09001731
1732#ifdef ATA_DEBUG
1733 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
1734 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n",
1735 status);
1736#endif
1737
1738 return status;
1739}
Tejun Heo127102a2008-04-07 22:47:21 +09001740#endif /* CONFIG_ATA_SFF */
Tejun Heo624d5c52008-03-25 22:16:41 +09001741
Linus Torvalds1da177e2005-04-16 15:20:36 -07001742#endif /* __LINUX_LIBATA_H__ */