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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
Joe Perches06296a12011-04-15 15:52:00 -070077#define ata_print_version_once(dev, version) \
78({ \
79 static bool __print_once; \
80 \
81 if (!__print_once) { \
82 __print_once = true; \
83 ata_print_version(dev, version); \
84 } \
85})
86
Randy Dunlapbfd60572006-01-17 19:34:42 -050087/* NEW: debug levels */
88#define HAVE_LIBATA_MSG 1
89
90enum {
91 ATA_MSG_DRV = 0x0001,
92 ATA_MSG_INFO = 0x0002,
93 ATA_MSG_PROBE = 0x0004,
94 ATA_MSG_WARN = 0x0008,
95 ATA_MSG_MALLOC = 0x0010,
96 ATA_MSG_CTL = 0x0020,
97 ATA_MSG_INTR = 0x0040,
98 ATA_MSG_ERR = 0x0080,
99};
100
101#define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV)
102#define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO)
103#define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE)
104#define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN)
105#define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
106#define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL)
107#define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR)
108#define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR)
109
110static inline u32 ata_msg_init(int dval, int default_msg_enable_bits)
111{
112 if (dval < 0 || dval >= (sizeof(u32) * 8))
113 return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */
114 if (!dval)
115 return 0;
116 return (1 << dval) - 1;
117}
118
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119/* defines only for the constants which don't work well as enums */
120#define ATA_TAG_POISON 0xfafbfcfdU
121
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122enum {
123 /* various global constants */
124 LIBATA_MAX_PRD = ATA_MAX_PRD / 2,
Alan Coxd26fc952007-07-06 19:13:52 -0400125 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 ATA_DEF_QUEUE = 1,
Tejun Heo2ab7db12006-05-15 20:58:02 +0900127 /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */
Tejun Heoa6e6ce82006-05-15 21:03:48 +0900128 ATA_MAX_QUEUE = 32,
Tejun Heo2ab7db12006-05-15 20:58:02 +0900129 ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1,
Tejun Heo341c2c92008-05-20 02:17:51 +0900130 ATA_SHORT_PAUSE = 16,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131
Tejun Heo140b5e52007-12-12 12:21:52 +0900132 ATAPI_MAX_DRAIN = 16 << 10,
133
Tejun Heob558edd2008-01-24 00:05:14 +0900134 ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1,
135
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136 ATA_SHT_EMULATED = 1,
137 ATA_SHT_CMD_PER_LUN = 1,
138 ATA_SHT_THIS_ID = -1,
Jeff Garzikcf482932005-10-22 00:19:33 -0400139 ATA_SHT_USE_CLUSTERING = 1,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140
141 /* struct ata_device stuff */
Tejun Heo949b38a2006-04-02 18:51:52 +0900142 ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */
143 ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */
Jeff Garzik029f5462006-04-02 10:30:40 -0400144 ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */
Tejun Heo88e49032006-05-15 21:03:38 +0900145 ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */
Tejun Heo6fc49ad2006-11-11 20:10:45 +0900146 ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */
Tejun Heo67465442007-05-15 03:28:16 +0900147 ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */
148 ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */
Tejun Heo7d77b242007-09-23 13:14:13 +0900149 ATA_DFLAG_AN = (1 << 7), /* AN configured */
Tejun Heo91163002008-02-21 13:25:50 +0900150 ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */
Kristen Carlson Accardi25571642007-09-11 11:41:59 -0700151 ATA_DFLAG_CFG_MASK = (1 << 12) - 1,
Tejun Heo949b38a2006-04-02 18:51:52 +0900152
Kristen Carlson Accardi25571642007-09-11 11:41:59 -0700153 ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */
154 ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */
Tejun Heo054a5fb2007-10-25 18:30:36 +0900155 ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */
Tejun Heo00115e02007-11-27 19:28:58 +0900156 ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200157 ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */
Tejun Heo445d2112010-04-05 10:33:13 +0900158 ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */
Tejun Heof20ded32007-11-27 19:28:52 +0900159 ATA_DFLAG_INIT_MASK = (1 << 24) - 1,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160
Tejun Heof20ded32007-11-27 19:28:52 +0900161 ATA_DFLAG_DETACH = (1 << 24),
162 ATA_DFLAG_DETACHED = (1 << 25),
Tejun Heoabdda732006-05-31 18:27:29 +0900163
Lin Mingb1354cb2012-06-25 16:13:08 +0800164 ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */
Shane Huang65fe1f02012-09-07 22:40:01 +0800165 ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */
Aaron Lu0d0cdb02012-11-26 13:55:25 +0800166 ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */
Lin Mingb1354cb2012-06-25 16:13:08 +0800167
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168 ATA_DEV_UNKNOWN = 0, /* unknown device */
169 ATA_DEV_ATA = 1, /* ATA device */
170 ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */
171 ATA_DEV_ATAPI = 3, /* ATAPI device */
172 ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */
Tejun Heoe0a71752007-09-23 13:14:12 +0900173 ATA_DEV_PMP = 5, /* SATA port multiplier */
174 ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */
175 ATA_DEV_SEMB = 7, /* SEMB */
176 ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */
177 ATA_DEV_NONE = 9, /* no device */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178
Tejun Heo0c887582007-08-06 18:36:23 +0900179 /* struct ata_link flags */
Tejun Heo05944bd2008-08-13 20:19:09 +0900180 ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */
Tejun Heoae791c02007-09-23 13:14:12 +0900181 ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */
182 ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */
183 ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */
184 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB,
Tejun Heofd995f72007-09-23 13:14:12 +0900185 ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */
Tejun Heof9df58c2007-09-23 13:14:13 +0900186 ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */
Kristen Carlson Accardi18f7ba42008-06-03 10:33:55 -0700187 ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */
Tejun Heo6b7ae952010-09-01 17:50:06 +0200188 ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */
Dan Williamsca6d43b2012-06-21 23:41:41 -0700189 ATA_LFLAG_RST_ONCE = (1 << 9), /* limit recovery to one reset */
Tejun Heo0c887582007-08-06 18:36:23 +0900190
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191 /* struct ata_port flags */
Tejun Heo949b38a2006-04-02 18:51:52 +0900192 ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193 /* (doesn't imply presence) */
Tejun Heo949b38a2006-04-02 18:51:52 +0900194 ATA_FLAG_SATA = (1 << 1),
Tejun Heo949b38a2006-04-02 18:51:52 +0900195 ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */
196 ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */
197 ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */
Tejun Heo7395acb2006-05-31 18:27:25 +0900198 ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD
199 * doesn't handle PIO interrupts */
200 ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */
Rafael J. Wysocki2a6e58d2009-01-19 20:56:43 +0100201 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */
202 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */
Tejun Heo7395acb2006-05-31 18:27:25 +0900203 ATA_FLAG_DEBUGMSG = (1 << 13),
Shaohua Li388539f2009-07-27 09:24:35 +0800204 ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */
Tejun Heob2a8bbe2007-01-25 19:40:05 +0900205 ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */
Alan Coxf834e492007-02-07 13:46:00 -0800206 ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */
Tejun Heo3cadbcc2007-05-15 03:28:15 +0900207 ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */
Kristen Carlson Accardi9f45cbd2007-08-15 03:57:11 -0400208 ATA_FLAG_AN = (1 << 18), /* controller supports AN */
Tejun Heoe0a71752007-09-23 13:14:12 +0900209 ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */
Kristen Carlson Accardi18f7ba42008-06-03 10:33:55 -0700210 ATA_FLAG_EM = (1 << 21), /* driver supports enclosure
211 * management */
212 ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity
213 * led */
Tejun Heoae01b242011-03-16 11:14:55 +0100214 ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */
Jens Axboe9b847542006-01-06 09:28:07 +0100215
Tejun Heob51e9e52006-06-29 01:29:30 +0900216 /* bits 24:31 of ap->flags are reserved for LLD specific flags */
Alan Cox8d238e02006-01-17 20:50:31 +0000217
Alan Coxe3cf95d2009-04-09 17:31:17 +0100218
Tejun Heob51e9e52006-06-29 01:29:30 +0900219 /* struct ata_port pflags */
220 ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */
221 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */
222 ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */
223 ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */
224 ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */
Tejun Heob51e9e52006-06-29 01:29:30 +0900225 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */
Tejun Heof4d6d002007-05-01 11:50:15 +0200226 ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */
Tejun Heoafaa5c32007-10-09 15:06:10 +0900227 ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */
Tejun Heoece180d2008-11-03 20:04:37 +0900228 ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */
229 ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */
Tejun Heob51e9e52006-06-29 01:29:30 +0900230
Tejun Heob51e9e52006-06-29 01:29:30 +0900231 ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */
Tejun Heo500530f2006-07-03 16:07:27 +0900232 ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */
Tejun Heoc05e6ff2007-12-15 15:05:02 +0900233 ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */
Tejun Heodde44582006-02-02 00:56:10 +0900234
Alan Coxe3cf95d2009-04-09 17:31:17 +0100235 ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */
236 ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */
237
Tejun Heo949b38a2006-04-02 18:51:52 +0900238 /* struct ata_queued_cmd flags */
239 ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */
Tejun Heo001102d2007-12-05 16:43:09 +0900240 ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */
Tejun Heo27197362006-04-02 18:51:53 +0900241 ATA_QCFLAG_IO = (1 << 3), /* standard IO command */
Tejun Heoe61e0672006-05-15 20:57:40 +0900242 ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */
Tejun Heoda917d62007-09-23 13:14:12 +0900243 ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */
Tejun Heoe027bd32007-10-26 16:19:26 +0900244 ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */
Tejun Heo03faab72008-03-27 19:14:24 +0900245 ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */
Tejun Heoe61e0672006-05-15 20:57:40 +0900246
Tejun Heo9ec957f2006-05-15 20:57:58 +0900247 ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */
248 ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */
249 ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250
Alan Cox4e5ec5d2006-03-27 18:42:40 +0100251 /* host set flags */
Jeff Garzikcca39742006-08-24 03:19:22 -0400252 ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */
Tejun Heoecef7252007-04-17 23:44:06 +0900253 ATA_HOST_STARTED = (1 << 1), /* Host started */
Arjan van de Ven886ad092009-01-09 15:54:07 -0800254 ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */
Andy Whitcroftdb63a4c2012-05-04 22:15:10 +0100255 ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */
Jeff Garzik9bec2e32006-08-31 00:02:15 -0400256
Tejun Heob8b275e2007-07-10 15:55:43 +0900257 /* bits 24:31 of host->flags are reserved for LLD specific flags */
258
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259 /* various lengths of time */
Tejun Heo341c2c92008-05-20 02:17:51 +0900260 ATA_TMOUT_BOOT = 30000, /* heuristic */
261 ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */
Tejun Heo341c2c92008-05-20 02:17:51 +0900262 ATA_TMOUT_INTERNAL_QUICK = 5000,
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200263 ATA_TMOUT_MAX_PARK = 30000,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264
Tejun Heob48d58f2010-04-09 19:46:38 +0900265 /*
266 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s
267 * is too much without parallel probing. Use 2s if parallel
268 * probing is available, 800ms otherwise.
Tejun Heo88ff6ea2007-10-16 14:21:24 -0700269 */
Tejun Heob48d58f2010-04-09 19:46:38 +0900270 ATA_TMOUT_FF_WAIT_LONG = 2000,
271 ATA_TMOUT_FF_WAIT = 800,
Tejun Heo88ff6ea2007-10-16 14:21:24 -0700272
Tejun Heo705e76b2008-04-07 22:47:19 +0900273 /* Spec mandates to wait for ">= 2ms" before checking status
274 * after reset. We wait 150ms, because that was the magic
275 * delay used for ATAPI devices in Hale Landis's ATADRVR, for
276 * the period of time between when the ATA command register is
277 * written, and then status is checked. Because waiting for
278 * "a while" before checking status is fine, post SRST, we
279 * perform this magic delay here as well.
280 *
281 * Old drivers/ide uses the 2mS rule and then waits for ready.
282 */
Tejun Heo341c2c92008-05-20 02:17:51 +0900283 ATA_WAIT_AFTER_RESET = 150,
Tejun Heo705e76b2008-04-07 22:47:19 +0900284
Tejun Heo9dadd452008-04-07 22:47:19 +0900285 /* If PMP is supported, we have to do follow-up SRST. As some
286 * PMPs don't send D2H Reg FIS after hardreset, LLDs are
287 * advised to wait only for the following duration before
288 * doing SRST.
289 */
Stuart Hayese7d3ef12009-03-04 11:59:46 -0800290 ATA_TMOUT_PMP_SRST_WAIT = 5000,
Tejun Heo9dadd452008-04-07 22:47:19 +0900291
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292 /* ATA bus states */
293 BUS_UNKNOWN = 0,
294 BUS_DMA = 1,
295 BUS_IDLE = 2,
296 BUS_NOINTR = 3,
297 BUS_NODATA = 4,
298 BUS_TIMER = 5,
299 BUS_PIO = 6,
300 BUS_EDD = 7,
301 BUS_IDENTIFY = 8,
302 BUS_PACKET = 9,
303
304 /* SATA port states */
305 PORT_UNKNOWN = 0,
306 PORT_ENABLED = 1,
307 PORT_DISABLED = 2,
308
309 /* encoding various smaller bitmaps into a single
Tejun Heo7dc951a2007-11-27 19:43:42 +0900310 * unsigned long bitmap
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311 */
Tejun Heo70cd0712007-11-27 19:43:40 +0900312 ATA_NR_PIO_MODES = 7,
313 ATA_NR_MWDMA_MODES = 5,
314 ATA_NR_UDMA_MODES = 8,
Tejun Heo1da7b0d2006-03-06 04:31:56 +0900315
316 ATA_SHIFT_PIO = 0,
Tejun Heo70cd0712007-11-27 19:43:40 +0900317 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES,
318 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES,
Tejun Heo1da7b0d2006-03-06 04:31:56 +0900319
Jeff Garzikcedc9a42005-10-05 07:13:30 -0400320 /* size of buffer to pad xfers ending on unaligned boundaries */
321 ATA_DMA_PAD_SZ = 4,
Tejun Heo949b38a2006-04-02 18:51:52 +0900322
Tejun Heo0c247c52006-05-15 20:58:19 +0900323 /* ering size */
324 ATA_ERING_SIZE = 32,
325
Tejun Heo31cc23b2007-09-23 13:14:12 +0900326 /* return values for ->qc_defer */
327 ATA_DEFER_LINK = 1,
328 ATA_DEFER_PORT = 2,
329
Tejun Heof3e81b12006-05-15 20:58:21 +0900330 /* desc_len for ata_eh_info and context */
331 ATA_EH_DESC_LEN = 80,
332
Tejun Heo9be1e972006-05-15 20:58:17 +0900333 /* reset / recovery action types */
334 ATA_EH_REVALIDATE = (1 << 0),
Tejun Heocf480622008-01-24 00:05:14 +0900335 ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */
336 ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */
337 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
Tejun Heof9df58c2007-09-23 13:14:13 +0900338 ATA_EH_ENABLE_LINK = (1 << 3),
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200339 ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */
Tejun Heo9be1e972006-05-15 20:58:17 +0900340
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200341 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK,
Tejun Heob5b3fa32008-07-31 17:02:42 +0900342 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET |
Tejun Heo6b7ae952010-09-01 17:50:06 +0200343 ATA_EH_ENABLE_LINK,
Tejun Heo9be1e972006-05-15 20:58:17 +0900344
Tejun Heof3e81b12006-05-15 20:58:21 +0900345 /* ata_eh_info->flags */
Tejun Heoabdda732006-05-31 18:27:29 +0900346 ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */
Tejun Heo1cdaf532006-07-03 16:07:26 +0900347 ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */
348 ATA_EHI_QUIET = (1 << 3), /* be quiet */
Tejun Heoe2f3d752010-09-07 14:05:31 +0200349 ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */
Tejun Heoabdda732006-05-31 18:27:29 +0900350
Tejun Heo0d64a232007-04-23 02:41:05 +0900351 ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */
352 ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */
353 ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */
354 ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */
Andrea Gelmini89692c02010-10-16 15:19:18 +0200355 ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */
Tejun Heof3e81b12006-05-15 20:58:21 +0900356
Tejun Heo0d64a232007-04-23 02:41:05 +0900357 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
Tejun Heo13abf502006-07-10 23:18:46 +0900358
Tejun Heo848e4c62008-10-21 14:26:39 +0900359 /* mask of flags to transfer *to* the slave link */
360 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET,
361
Tejun Heoa1e10f72007-08-18 13:28:49 +0900362 /* max tries if error condition is still set after ->error_handler */
363 ATA_EH_MAX_TRIES = 5,
Tejun Heoad9e2762006-05-15 20:58:12 +0900364
Tejun Heo5040ab62010-01-11 11:14:44 +0900365 /* sometimes resuming a link requires several retries */
366 ATA_LINK_RESUME_TRIES = 5,
367
Tejun Heo14d2bac2006-04-02 17:54:46 +0900368 /* how hard are we gonna try to probe/recover devices */
369 ATA_PROBE_MAX_TRIES = 3,
Tejun Heo022bdb02006-05-15 20:58:22 +0900370 ATA_EH_DEV_TRIES = 3,
Tejun Heoe0a71752007-09-23 13:14:12 +0900371 ATA_EH_PMP_TRIES = 5,
372 ATA_EH_PMP_LINK_TRIES = 3,
373
Tejun Heobf1bff62008-05-19 01:15:10 +0900374 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */
Tejun Heof5914a42006-05-31 18:27:48 +0900375
Tejun Heo87fbc5a2008-05-20 02:17:54 +0900376 /* This should match the actual table size of
377 * ata_eh_cmd_timeout_table in libata-eh.c.
378 */
Tejun Heo6013efd2009-11-19 15:36:45 +0900379 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6,
Tejun Heo87fbc5a2008-05-20 02:17:54 +0900380
Alan Cox93590852006-09-12 16:55:12 +0100381 /* Horkage types. May be set by libata or controller on drives
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300382 (some horkage may be drive/controller pair dependent */
Alan Cox93590852006-09-12 16:55:12 +0100383
384 ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */
Alan Cox6919a0a2006-10-27 19:08:46 -0700385 ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */
386 ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */
Albert Lee18d6e9d2007-04-02 11:34:15 +0800387 ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */
Tejun Heo16c55b02007-08-29 11:58:33 +0900388 ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */
Tejun Heo50af2fa2008-05-19 01:15:14 +0900389 ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */
Alan Cox93328e12007-09-29 04:06:48 -0400390 ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */
Alan Cox6bbfd532007-11-05 22:58:58 +0000391 ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */
Albert Lee2d3b8ee2007-11-15 10:35:46 +0900392 ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */
Jens Axboe9ce8e302008-08-27 15:23:18 +0200393 ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */
Tejun Heo6a87e422008-11-03 19:01:09 +0900394 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands
395 not multiple of 16 bytes */
Nick Andrew877d0312009-01-26 11:06:57 +0100396 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */
Tejun Heo90627122009-01-29 20:31:36 +0900397 ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */
Tejun Heod0cb43b2009-07-09 09:27:50 +0900398 ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */
Shaohua Li388539f2009-07-27 09:24:35 +0800399 ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */
Tejun Heo43c9c592010-05-23 12:59:11 +0200400 ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */
Shan Haia32450e2013-03-18 10:30:44 +0800401 ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17), /* Set max sects to 65535 */
Alan Coxb3a70602007-10-02 12:38:26 -0400402
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400403 /* DMA mask for user DMA control: User visible values; DO NOT
Alan Coxb3a70602007-10-02 12:38:26 -0400404 renumber */
405 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */
406 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */
407 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */
Tejun Heoceb0c642007-12-05 16:43:06 +0900408
409 /* ATAPI command types */
410 ATAPI_READ = 0, /* READs */
411 ATAPI_WRITE = 1, /* WRITEs */
412 ATAPI_READ_CD = 2, /* READ CD [MSF] */
Tejun Heoe52dcc42008-04-02 17:35:19 +0900413 ATAPI_PASS_THRU = 3, /* SAT pass-thru */
414 ATAPI_MISC = 4, /* the rest */
Tejun Heo624d5c52008-03-25 22:16:41 +0900415
416 /* Timing constants */
417 ATA_TIMING_SETUP = (1 << 0),
418 ATA_TIMING_ACT8B = (1 << 1),
419 ATA_TIMING_REC8B = (1 << 2),
420 ATA_TIMING_CYC8B = (1 << 3),
421 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
422 ATA_TIMING_CYC8B,
423 ATA_TIMING_ACTIVE = (1 << 4),
424 ATA_TIMING_RECOVER = (1 << 5),
David Daney3ada9c12009-01-15 17:45:31 -0800425 ATA_TIMING_DMACK_HOLD = (1 << 6),
426 ATA_TIMING_CYCLE = (1 << 7),
427 ATA_TIMING_UDMA = (1 << 8),
Tejun Heo624d5c52008-03-25 22:16:41 +0900428 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
429 ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
430 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
David Daney3ada9c12009-01-15 17:45:31 -0800431 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE |
432 ATA_TIMING_UDMA,
Tejun Heof1bce7f2009-09-16 04:16:04 +0900433
434 /* ACPI constants */
435 ATA_ACPI_FILTER_SETXFER = 1 << 0,
436 ATA_ACPI_FILTER_LOCK = 1 << 1,
437 ATA_ACPI_FILTER_DIPM = 1 << 2,
Tejun Heofa5b5612009-09-16 04:17:02 +0900438 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */
439 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */
Tejun Heof1bce7f2009-09-16 04:16:04 +0900440
441 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER |
442 ATA_ACPI_FILTER_LOCK |
443 ATA_ACPI_FILTER_DIPM,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444};
445
Tejun Heo7dc951a2007-11-27 19:43:42 +0900446enum ata_xfer_mask {
447 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1)
448 << ATA_SHIFT_PIO,
449 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1)
450 << ATA_SHIFT_MWDMA,
451 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1)
452 << ATA_SHIFT_UDMA,
453};
454
Albert Lee14be71f2005-09-27 17:36:35 +0800455enum hsm_task_states {
Albert Leec56b14d22005-09-30 19:07:39 +0800456 HSM_ST_IDLE, /* no command on going */
Albert Lee71527642007-04-02 11:28:52 +0800457 HSM_ST_FIRST, /* (waiting the device to)
458 write CDB or first data block */
Albert Leec56b14d22005-09-30 19:07:39 +0800459 HSM_ST, /* (waiting the device to) transfer data */
460 HSM_ST_LAST, /* (waiting the device to) complete command */
Albert Leec56b14d22005-09-30 19:07:39 +0800461 HSM_ST_ERR, /* error */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462};
463
Jeff Garzika7dac442005-10-30 04:44:42 -0500464enum ata_completion_errors {
Tejun Heo11a56d22006-01-23 13:09:36 +0900465 AC_ERR_DEV = (1 << 0), /* device reported error */
466 AC_ERR_HSM = (1 << 1), /* host state machine violation */
467 AC_ERR_TIMEOUT = (1 << 2), /* timeout */
468 AC_ERR_MEDIA = (1 << 3), /* media error */
469 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */
470 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */
471 AC_ERR_SYSTEM = (1 << 6), /* system error */
472 AC_ERR_INVALID = (1 << 7), /* invalid argument */
473 AC_ERR_OTHER = (1 << 8), /* unknown */
Tejun Heo55a8e2c2006-11-10 18:08:10 +0900474 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */
Tejun Heo5335b722007-07-16 14:29:40 +0900475 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */
Jeff Garzika7dac442005-10-30 04:44:42 -0500476};
477
Tejun Heoc93b2632010-09-01 17:50:04 +0200478/*
479 * Link power management policy: If you alter this, you also need to
480 * alter libata-scsi.c (for the ascii descriptions)
481 */
482enum ata_lpm_policy {
483 ATA_LPM_UNKNOWN,
484 ATA_LPM_MAX_POWER,
485 ATA_LPM_MED_POWER,
486 ATA_LPM_MIN_POWER,
487};
488
Tejun Heo6b7ae952010-09-01 17:50:06 +0200489enum ata_lpm_hints {
490 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */
491 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */
492};
493
Linus Torvalds1da177e2005-04-16 15:20:36 -0700494/* forward declarations */
495struct scsi_device;
496struct ata_port_operations;
497struct ata_port;
Tejun Heocc0680a2007-08-06 18:36:23 +0900498struct ata_link;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499struct ata_queued_cmd;
500
501/* typedefs */
Tejun Heo77853bf2006-01-23 13:09:36 +0900502typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
Tejun Heocc0680a2007-08-06 18:36:23 +0900503typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
504typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
Tejun Heod4b2bab2007-02-02 16:50:52 +0900505 unsigned long deadline);
Tejun Heocc0680a2007-08-06 18:36:23 +0900506typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507
Tony Jonesee959b02008-02-22 00:13:36 +0100508extern struct device_attribute dev_attr_link_power_management_policy;
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200509extern struct device_attribute dev_attr_unload_heads;
Kristen Carlson Accardi18f7ba42008-06-03 10:33:55 -0700510extern struct device_attribute dev_attr_em_message_type;
511extern struct device_attribute dev_attr_em_message;
512extern struct device_attribute dev_attr_sw_activity;
513
514enum sw_activity {
515 OFF,
516 BLINK_ON,
517 BLINK_OFF,
518};
Kristen Carlson Accardica773292007-10-25 00:58:59 -0400519
Tejun Heo127102a2008-04-07 22:47:21 +0900520#ifdef CONFIG_ATA_SFF
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521struct ata_ioports {
Tejun Heo0d5ff562007-02-01 15:06:36 +0900522 void __iomem *cmd_addr;
523 void __iomem *data_addr;
524 void __iomem *error_addr;
525 void __iomem *feature_addr;
526 void __iomem *nsect_addr;
527 void __iomem *lbal_addr;
528 void __iomem *lbam_addr;
529 void __iomem *lbah_addr;
530 void __iomem *device_addr;
531 void __iomem *status_addr;
532 void __iomem *command_addr;
533 void __iomem *altstatus_addr;
534 void __iomem *ctl_addr;
Tejun Heo9a7780c2010-05-19 22:10:24 +0200535#ifdef CONFIG_ATA_BMDMA
Tejun Heo0d5ff562007-02-01 15:06:36 +0900536 void __iomem *bmdma_addr;
Tejun Heo9a7780c2010-05-19 22:10:24 +0200537#endif /* CONFIG_ATA_BMDMA */
Tejun Heo0d5ff562007-02-01 15:06:36 +0900538 void __iomem *scr_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700539};
Tejun Heo127102a2008-04-07 22:47:21 +0900540#endif /* CONFIG_ATA_SFF */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541
Jeff Garzikcca39742006-08-24 03:19:22 -0400542struct ata_host {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543 spinlock_t lock;
544 struct device *dev;
Tejun Heo0d5ff562007-02-01 15:06:36 +0900545 void __iomem * const *iomap;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546 unsigned int n_ports;
547 void *private_data;
Tejun Heo029cfd62008-03-25 12:22:49 +0900548 struct ata_port_operations *ops;
Alan Cox5444a6f2006-03-27 18:58:20 +0100549 unsigned long flags;
Tejun Heoc0c362b2010-09-06 17:57:14 +0200550
551 struct mutex eh_mutex;
552 struct task_struct *eh_owner;
553
Alan032af1c2007-03-01 17:36:46 +0000554 struct ata_port *simplex_claimed; /* channel owning the DMA */
Tejun Heof0eb62b2006-06-12 23:05:38 +0900555 struct ata_port *ports[0];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556};
557
558struct ata_queued_cmd {
559 struct ata_port *ap;
560 struct ata_device *dev;
561
562 struct scsi_cmnd *scsicmd;
563 void (*scsidone)(struct scsi_cmnd *);
564
565 struct ata_taskfile tf;
566 u8 cdb[ATAPI_CDB_LEN];
567
568 unsigned long flags; /* ATA_QCFLAG_xxx */
569 unsigned int tag;
570 unsigned int n_elem;
FUJITA Tomonori58256272009-02-27 17:35:43 +0900571 unsigned int orig_n_elem;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572
573 int dma_dir;
574
Mark Lord5a5dbd12007-03-16 10:22:26 -0400575 unsigned int sect_size;
Jeff Garzikcedc9a42005-10-05 07:13:30 -0400576
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577 unsigned int nbytes;
Tejun Heoaacda372008-03-18 17:47:43 +0900578 unsigned int extrabytes;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579 unsigned int curbytes;
580
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581 struct scatterlist sgent;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700582
Tejun Heoff2aeb12007-12-05 16:43:11 +0900583 struct scatterlist *sg;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584
Richard Kennedyb34e9042010-09-10 12:19:43 +0100585 struct scatterlist *cursg;
586 unsigned int cursg_ofs;
587
Albert Leea22e2eb2005-12-05 15:38:02 +0800588 unsigned int err_mask;
Tejun Heoe61e0672006-05-15 20:57:40 +0900589 struct ata_taskfile result_tf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700590 ata_qc_cb_t complete_fn;
591
Linus Torvalds1da177e2005-04-16 15:20:36 -0700592 void *private_data;
Darrick J. Wong1c50dc82007-01-30 01:18:41 -0800593 void *lldd_task;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700594};
595
Jeff Garzikcca39742006-08-24 03:19:22 -0400596struct ata_port_stats {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700597 unsigned long unhandled_irq;
598 unsigned long idle_irq;
599 unsigned long rw_reqbuf;
600};
601
Tejun Heo0c247c52006-05-15 20:58:19 +0900602struct ata_ering_entry {
Tejun Heo3884f7b2007-11-27 19:28:56 +0900603 unsigned int eflags;
Tejun Heo0c247c52006-05-15 20:58:19 +0900604 unsigned int err_mask;
605 u64 timestamp;
606};
607
608struct ata_ering {
609 int cursor;
610 struct ata_ering_entry ring[ATA_ERING_SIZE];
611};
612
Linus Torvalds1da177e2005-04-16 15:20:36 -0700613struct ata_device {
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900614 struct ata_link *link;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615 unsigned int devno; /* 0 or 1 */
Tejun Heo75683fe2007-07-05 13:31:27 +0900616 unsigned int horkage; /* List of broken features */
Richard Kennedy6866e7b2008-09-22 14:47:13 -0700617 unsigned long flags; /* ATA_DFLAG_xxx */
Tejun Heo3edebac2006-05-31 18:27:40 +0900618 struct scsi_device *sdev; /* attached SCSI device */
Bartlomiej Zolnierkiewicz95514fd2009-11-25 18:12:48 +0100619 void *private_data;
Tejun Heofafbae82007-05-15 03:28:16 +0900620#ifdef CONFIG_ATA_ACPI
Tejun Heo398e0782007-12-15 15:05:03 +0900621 union acpi_object *gtf_cache;
Tejun Heo110f66d2009-09-16 04:17:28 +0900622 unsigned int gtf_filter;
Tejun Heofafbae82007-05-15 03:28:16 +0900623#endif
Aaron Luafe75952013-01-15 17:20:58 +0800624#ifdef CONFIG_SATA_ZPODD
625 void *zpodd;
626#endif
Gwendal Grignoud9027472010-05-25 12:31:38 -0700627 struct device tdev;
Tejun Heo99cf6102009-01-29 20:31:32 +0900628 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */
Tejun Heo72fa4b72006-05-31 18:27:32 +0900629 u64 n_sectors; /* size of device, if ATA */
Tejun Heo5920dad2009-07-15 17:11:41 +0900630 u64 n_native_sectors; /* native size, if ATA */
Tejun Heo72fa4b72006-05-31 18:27:32 +0900631 unsigned int class; /* ATA_DEV_xxx */
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200632 unsigned long unpark_deadline;
Tejun Heoe0a71752007-09-23 13:14:12 +0900633
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634 u8 pio_mode;
635 u8 dma_mode;
636 u8 xfer_mode;
637 unsigned int xfer_shift; /* ATA_SHIFT_xxx */
638
Albert Lee8cbd6df2005-10-12 15:06:27 +0800639 unsigned int multi_count; /* sectors count for
640 READ/WRITE MULTIPLE */
Tejun Heob00eec12006-02-12 23:32:59 +0900641 unsigned int max_sectors; /* per-device max sectors */
Tejun Heo6e7846e2006-02-12 23:32:58 +0900642 unsigned int cdb_len;
Albert Lee8bf62ece2005-05-12 15:29:42 -0400643
Tejun Heoacf356b2006-03-24 14:07:50 +0900644 /* per-dev xfer mask */
Tejun Heo7dc951a2007-11-27 19:43:42 +0900645 unsigned long pio_mask;
646 unsigned long mwdma_mask;
647 unsigned long udma_mask;
Tejun Heoacf356b2006-03-24 14:07:50 +0900648
Albert Lee8bf62ece2005-05-12 15:29:42 -0400649 /* for CHS addressing */
650 u16 cylinders; /* Number of cylinders */
651 u16 heads; /* Number of heads */
652 u16 sectors; /* Number of sectors per track */
Tejun Heo0c247c52006-05-15 20:58:19 +0900653
Jeff Garzikf7e98932008-04-29 17:47:34 -0400654 union {
655 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
656 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
657 };
Tejun Heo99cf6102009-01-29 20:31:32 +0900658
Shane Huang803739d2012-12-17 23:18:59 +0800659 /* DEVSLP Timing Variables from Identify Device Data Log */
660 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE];
Shane Huang65fe1f02012-09-07 22:40:01 +0800661
Tejun Heo99cf6102009-01-29 20:31:32 +0900662 /* error history */
663 int spdn_cnt;
664 /* ering is CLEAR_END, read comment above CLEAR_END */
665 struct ata_ering ering;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700666};
667
Tejun Heo99cf6102009-01-29 20:31:32 +0900668/* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are
669 * cleared to zero on ata_dev_init().
Tejun Heo72fa4b72006-05-31 18:27:32 +0900670 */
Tejun Heo99cf6102009-01-29 20:31:32 +0900671#define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
672#define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
Tejun Heo72fa4b72006-05-31 18:27:32 +0900673
Tejun Heof3e81b12006-05-15 20:58:21 +0900674struct ata_eh_info {
675 struct ata_device *dev; /* offending device */
676 u32 serror; /* SError from LLDD */
677 unsigned int err_mask; /* port-wide err_mask */
678 unsigned int action; /* ATA_EH_* action mask */
Tejun Heo47005f22006-06-19 18:27:23 +0900679 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */
Tejun Heof3e81b12006-05-15 20:58:21 +0900680 unsigned int flags; /* ATA_EHI_* flags */
Tejun Heoabdda732006-05-31 18:27:29 +0900681
Tejun Heoabdda732006-05-31 18:27:29 +0900682 unsigned int probe_mask;
683
Tejun Heof3e81b12006-05-15 20:58:21 +0900684 char desc[ATA_EH_DESC_LEN];
685 int desc_len;
686};
687
688struct ata_eh_context {
689 struct ata_eh_info i;
690 int tries[ATA_MAX_DEVICES];
Tejun Heo87fbc5a2008-05-20 02:17:54 +0900691 int cmd_timeout_idx[ATA_MAX_DEVICES]
692 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE];
Tejun Heoabdda732006-05-31 18:27:29 +0900693 unsigned int classes[ATA_MAX_DEVICES];
694 unsigned int did_probe_mask;
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200695 unsigned int unloaded_mask;
Tejun Heo00115e02007-11-27 19:28:58 +0900696 unsigned int saved_ncq_enabled;
697 u8 saved_xfer_mode[ATA_MAX_DEVICES];
Tejun Heo0a2c0f52008-05-20 02:17:52 +0900698 /* timestamp for the last reset attempt or success */
699 unsigned long last_reset;
Tejun Heof3e81b12006-05-15 20:58:21 +0900700};
701
Tejun Heo64578a32007-05-15 03:28:16 +0900702struct ata_acpi_drive
703{
704 u32 pio;
705 u32 dma;
706} __packed;
707
708struct ata_acpi_gtm {
709 struct ata_acpi_drive drive[2];
710 u32 flags;
711} __packed;
712
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900713struct ata_link {
714 struct ata_port *ap;
Tejun Heo89898052007-08-06 18:36:23 +0900715 int pmp; /* port multiplier port # */
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900716
Gwendal Grignoud9027472010-05-25 12:31:38 -0700717 struct device tdev;
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900718 unsigned int active_tag; /* active tag on this link */
719 u32 sactive; /* active NCQ commands */
720
Tejun Heo0c887582007-08-06 18:36:23 +0900721 unsigned int flags; /* ATA_LFLAG_xxx */
722
Tejun Heod127ea72008-07-31 16:09:34 +0900723 u32 saved_scontrol; /* SControl on probe */
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900724 unsigned int hw_sata_spd_limit;
725 unsigned int sata_spd_limit;
726 unsigned int sata_spd; /* current SATA PHY speed */
Tejun Heo6b7ae952010-09-01 17:50:06 +0200727 enum ata_lpm_policy lpm_policy;
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900728
729 /* record runtime error info, protected by host_set lock */
730 struct ata_eh_info eh_info;
731 /* EH context */
732 struct ata_eh_context eh_context;
733
734 struct ata_device device[ATA_MAX_DEVICES];
735};
Gwendal Grignoud9027472010-05-25 12:31:38 -0700736#define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
737#define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900738
Linus Torvalds1da177e2005-04-16 15:20:36 -0700739struct ata_port {
Jeff Garzikcca39742006-08-24 03:19:22 -0400740 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */
Tejun Heo029cfd62008-03-25 12:22:49 +0900741 struct ata_port_operations *ops;
Jeff Garzikba6a1302006-06-22 23:46:10 -0400742 spinlock_t *lock;
Alan Coxe3cf95d2009-04-09 17:31:17 +0100743 /* Flags owned by the EH context. Only EH should touch these once the
744 port is active */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700745 unsigned long flags; /* ATA_FLAG_xxx */
Alan Coxe3cf95d2009-04-09 17:31:17 +0100746 /* Flags that change dynamically, protected by ap->lock */
Tejun Heob51e9e52006-06-29 01:29:30 +0900747 unsigned int pflags; /* ATA_PFLAG_xxx */
Tejun Heo44877b42007-02-21 01:06:51 +0900748 unsigned int print_id; /* user visible unique port ID */
749 unsigned int port_no; /* 0 based port no. inside the host */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700750
Tejun Heo127102a2008-04-07 22:47:21 +0900751#ifdef CONFIG_ATA_SFF
Linus Torvalds1da177e2005-04-16 15:20:36 -0700752 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700753 u8 ctl; /* cache of ATA control register */
754 u8 last_ctl; /* Cache last written value */
Gwendal Grignouea3c6452010-08-31 16:20:36 -0700755 struct ata_link* sff_pio_task_link; /* link currently used */
Tejun Heoc4291372010-05-10 21:41:38 +0200756 struct delayed_work sff_pio_task;
Tejun Heo9a7780c2010-05-19 22:10:24 +0200757#ifdef CONFIG_ATA_BMDMA
Tejun Heof60d7012010-05-10 21:41:41 +0200758 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */
759 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */
Tejun Heo9a7780c2010-05-19 22:10:24 +0200760#endif /* CONFIG_ATA_BMDMA */
Tejun Heo5fe74542010-05-10 21:41:37 +0200761#endif /* CONFIG_ATA_SFF */
762
Linus Torvalds1da177e2005-04-16 15:20:36 -0700763 unsigned int pio_mask;
764 unsigned int mwdma_mask;
765 unsigned int udma_mask;
766 unsigned int cbl; /* cable type; ATA_CBL_xxx */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700767
768 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE];
Tejun Heo8a8bc222008-11-10 14:48:21 +0900769 unsigned long qc_allocated;
Tejun Heodedaf2b2006-05-15 21:03:43 +0900770 unsigned int qc_active;
Tejun Heoda917d62007-09-23 13:14:12 +0900771 int nr_active_links; /* #links with active qcs */
Tejun Heodedaf2b2006-05-15 21:03:43 +0900772
Tejun Heob1c72912008-07-31 17:02:43 +0900773 struct ata_link link; /* host default link */
774 struct ata_link *slave_link; /* see ata_slave_link_init() */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700775
Tejun Heo89898052007-08-06 18:36:23 +0900776 int nr_pmp_links; /* nr of available PMP links */
777 struct ata_link *pmp_link; /* array of PMP links */
Tejun Heoda917d62007-09-23 13:14:12 +0900778 struct ata_link *excl_link; /* for PMP qc exclusion */
Tejun Heo89898052007-08-06 18:36:23 +0900779
Jeff Garzikcca39742006-08-24 03:19:22 -0400780 struct ata_port_stats stats;
781 struct ata_host *host;
Brian King2f1f6102006-03-23 17:30:15 -0600782 struct device *dev;
Gwendal Grignoud9027472010-05-25 12:31:38 -0700783 struct device tdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700784
Tejun Heoad72cf92010-07-02 10:03:52 +0200785 struct mutex scsi_scan_mutex;
David Howells52bad642006-11-22 14:54:01 +0000786 struct delayed_work hotplug_task;
Jeff Garzik3b01b8a2006-06-12 00:22:04 -0400787 struct work_struct scsi_rescan_task;
Tejun Heo86e45b62006-03-05 15:29:09 +0900788
Albert Lee14be71f2005-09-27 17:36:35 +0800789 unsigned int hsm_task_state;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700790
Randy Dunlapbfd60572006-01-17 19:34:42 -0500791 u32 msg_enable;
Tejun Heoa72ec4c2006-01-23 13:09:37 +0900792 struct list_head eh_done_q;
Tejun Heoc6cf9e92006-05-31 18:27:27 +0900793 wait_queue_head_t eh_wait_q;
Tejun Heoa1e10f72007-08-18 13:28:49 +0900794 int eh_tries;
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200795 struct completion park_req_pending;
Randy Dunlapbfd60572006-01-17 19:34:42 -0500796
Tejun Heo500530f2006-07-03 16:07:27 +0900797 pm_message_t pm_mesg;
798 int *pm_result;
Tejun Heo6b7ae952010-09-01 17:50:06 +0200799 enum ata_lpm_policy target_lpm_policy;
Tejun Heo500530f2006-07-03 16:07:27 +0900800
Tejun Heo5ddf24c2007-07-16 14:29:41 +0900801 struct timer_list fastdrain_timer;
802 unsigned long fastdrain_cnt;
803
Kristen Carlson Accardi18f7ba42008-06-03 10:33:55 -0700804 int em_message_type;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700805 void *private_data;
Tejun Heofe635c72006-05-15 20:57:35 +0900806
Tejun Heofafbae82007-05-15 03:28:16 +0900807#ifdef CONFIG_ATA_ACPI
Tejun Heoc05e6ff2007-12-15 15:05:02 +0900808 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */
Tejun Heofafbae82007-05-15 03:28:16 +0900809#endif
Tejun Heo84bda122009-03-02 18:53:26 +0900810 /* owned by EH */
811 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700812};
813
Tejun Heo029cfd62008-03-25 12:22:49 +0900814/* The following initializer overrides a method to NULL whether one of
815 * its parent has the method defined or not. This is equivalent to
816 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant
817 * expression and thus can't be used as an initializer.
818 */
819#define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
820
Linus Torvalds1da177e2005-04-16 15:20:36 -0700821struct ata_port_operations {
Tejun Heoc1bc8992008-03-25 12:22:47 +0900822 /*
823 * Command execution
824 */
825 int (*qc_defer)(struct ata_queued_cmd *qc);
826 int (*check_atapi_dma)(struct ata_queued_cmd *qc);
827 void (*qc_prep)(struct ata_queued_cmd *qc);
828 unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
Tejun Heo22183bf2008-04-07 22:47:20 +0900829 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700830
Tejun Heoc1bc8992008-03-25 12:22:47 +0900831 /*
832 * Configuration and exception handling
833 */
834 int (*cable_detect)(struct ata_port *ap);
835 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask);
836 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
837 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
838 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
Alan Cox963e4972008-07-24 17:16:06 +0100839 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700840
Tejun Heoc1bc8992008-03-25 12:22:47 +0900841 void (*dev_config)(struct ata_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700842
Tejun Heoc1bc8992008-03-25 12:22:47 +0900843 void (*freeze)(struct ata_port *ap);
844 void (*thaw)(struct ata_port *ap);
Tejun Heoa1efdab2008-03-25 12:22:50 +0900845 ata_prereset_fn_t prereset;
846 ata_reset_fn_t softreset;
847 ata_reset_fn_t hardreset;
848 ata_postreset_fn_t postreset;
849 ata_prereset_fn_t pmp_prereset;
850 ata_reset_fn_t pmp_softreset;
851 ata_reset_fn_t pmp_hardreset;
852 ata_postreset_fn_t pmp_postreset;
Tejun Heoc1bc8992008-03-25 12:22:47 +0900853 void (*error_handler)(struct ata_port *ap);
Alan Coxc96f1732009-03-24 10:23:46 +0000854 void (*lost_interrupt)(struct ata_port *ap);
Tejun Heoc1bc8992008-03-25 12:22:47 +0900855 void (*post_internal_cmd)(struct ata_queued_cmd *qc);
Dan Williamse4a9c372012-06-21 23:25:27 -0700856 void (*sched_eh)(struct ata_port *ap);
857 void (*end_eh)(struct ata_port *ap);
Tejun Heoc1bc8992008-03-25 12:22:47 +0900858
859 /*
860 * Optional features
861 */
Tejun Heo82ef04f2008-07-31 17:02:40 +0900862 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val);
863 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val);
Tejun Heoc1bc8992008-03-25 12:22:47 +0900864 void (*pmp_attach)(struct ata_port *ap);
865 void (*pmp_detach)(struct ata_port *ap);
Tejun Heo6b7ae952010-09-01 17:50:06 +0200866 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy,
867 unsigned hints);
Tejun Heoc1bc8992008-03-25 12:22:47 +0900868
869 /*
870 * Start, stop, suspend and resume
871 */
872 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg);
873 int (*port_resume)(struct ata_port *ap);
874 int (*port_start)(struct ata_port *ap);
875 void (*port_stop)(struct ata_port *ap);
876 void (*host_stop)(struct ata_host *host);
877
Tejun Heo127102a2008-04-07 22:47:21 +0900878#ifdef CONFIG_ATA_SFF
Tejun Heoc1bc8992008-03-25 12:22:47 +0900879 /*
880 * SFF / taskfile oriented ops
881 */
Tejun Heo5682ed32008-04-07 22:47:16 +0900882 void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
Sergei Shtylyov41dec292010-05-07 22:47:50 +0400883 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl);
Tejun Heo5682ed32008-04-07 22:47:16 +0900884 u8 (*sff_check_status)(struct ata_port *ap);
885 u8 (*sff_check_altstatus)(struct ata_port *ap);
886 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
887 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
888 void (*sff_exec_command)(struct ata_port *ap,
889 const struct ata_taskfile *tf);
890 unsigned int (*sff_data_xfer)(struct ata_device *dev,
891 unsigned char *buf, unsigned int buflen, int rw);
Sergei Shtylyove42a5422010-05-07 22:49:02 +0400892 void (*sff_irq_on)(struct ata_port *);
Tejun Heo27943622010-01-19 10:49:19 +0900893 bool (*sff_irq_check)(struct ata_port *);
Tejun Heo5682ed32008-04-07 22:47:16 +0900894 void (*sff_irq_clear)(struct ata_port *);
Tejun Heo8244cd02010-05-10 21:41:36 +0200895 void (*sff_drain_fifo)(struct ata_queued_cmd *qc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896
Tejun Heo9a7780c2010-05-19 22:10:24 +0200897#ifdef CONFIG_ATA_BMDMA
Tejun Heoc1bc8992008-03-25 12:22:47 +0900898 void (*bmdma_setup)(struct ata_queued_cmd *qc);
899 void (*bmdma_start)(struct ata_queued_cmd *qc);
900 void (*bmdma_stop)(struct ata_queued_cmd *qc);
901 u8 (*bmdma_status)(struct ata_port *ap);
Tejun Heo9a7780c2010-05-19 22:10:24 +0200902#endif /* CONFIG_ATA_BMDMA */
Tejun Heo127102a2008-04-07 22:47:21 +0900903#endif /* CONFIG_ATA_SFF */
Tejun Heoc19ba8a2006-01-24 17:05:22 +0900904
Kristen Carlson Accardi18f7ba42008-06-03 10:33:55 -0700905 ssize_t (*em_show)(struct ata_port *ap, char *buf);
906 ssize_t (*em_store)(struct ata_port *ap, const char *message,
907 size_t size);
908 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf);
909 ssize_t (*sw_activity_store)(struct ata_device *dev,
910 enum sw_activity val);
Tejun Heoc1bc8992008-03-25 12:22:47 +0900911 /*
912 * Obsolete
Tejun Heo9ec957f2006-05-15 20:57:58 +0900913 */
Tejun Heoc1bc8992008-03-25 12:22:47 +0900914 void (*phy_reset)(struct ata_port *ap);
915 void (*eng_timeout)(struct ata_port *ap);
Tejun Heo029cfd62008-03-25 12:22:49 +0900916
917 /*
918 * ->inherits must be the last field and all the preceding
919 * fields must be pointers.
920 */
921 const struct ata_port_operations *inherits;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700922};
923
924struct ata_port_info {
Jeff Garzikcca39742006-08-24 03:19:22 -0400925 unsigned long flags;
Tejun Heo0c887582007-08-06 18:36:23 +0900926 unsigned long link_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700927 unsigned long pio_mask;
928 unsigned long mwdma_mask;
929 unsigned long udma_mask;
Tejun Heo029cfd62008-03-25 12:22:49 +0900930 struct ata_port_operations *port_ops;
Alan Coxe99f8b52005-11-08 14:09:44 +0000931 void *private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700932};
933
Alan Cox452503f2005-10-21 19:01:32 -0400934struct ata_timing {
935 unsigned short mode; /* ATA mode */
936 unsigned short setup; /* t1 */
937 unsigned short act8b; /* t2 for 8-bit I/O */
938 unsigned short rec8b; /* t2i for 8-bit I/O */
939 unsigned short cyc8b; /* t0 for 8-bit I/O */
940 unsigned short active; /* t2 or tD */
941 unsigned short recover; /* t2i or tK */
David Daney3ada9c12009-01-15 17:45:31 -0800942 unsigned short dmack_hold; /* tj */
Alan Cox452503f2005-10-21 19:01:32 -0400943 unsigned short cycle; /* t0 */
944 unsigned short udma; /* t2CYCTYP/2 */
945};
946
Tejun Heo624d5c52008-03-25 22:16:41 +0900947/*
948 * Core layer - drivers/ata/libata-core.c
949 */
Tejun Heoe9c83912006-07-03 16:07:26 +0900950extern const unsigned long sata_deb_timing_normal[];
951extern const unsigned long sata_deb_timing_hotplug[];
952extern const unsigned long sata_deb_timing_long[];
953
Tejun Heo029cfd62008-03-25 12:22:49 +0900954extern struct ata_port_operations ata_dummy_port_ops;
Tejun Heo21b0ad42007-04-17 23:44:07 +0900955extern const struct ata_port_info ata_dummy_port_info;
Tejun Heodd5b06c2006-08-10 16:59:12 +0900956
Tejun Heoe9c83912006-07-03 16:07:26 +0900957static inline const unsigned long *
958sata_ehc_deb_timing(struct ata_eh_context *ehc)
959{
960 if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
961 return sata_deb_timing_hotplug;
962 else
963 return sata_deb_timing_normal;
964}
Tejun Heod7bb4cc2006-05-31 18:27:46 +0900965
Tejun Heodd5b06c2006-08-10 16:59:12 +0900966static inline int ata_port_is_dummy(struct ata_port *ap)
967{
968 return ap->ops == &ata_dummy_port_ops;
969}
970
Tejun Heo936fd732007-08-06 18:36:23 +0900971extern int sata_set_spd(struct ata_link *link);
Tejun Heo0aa11132008-04-07 22:47:18 +0900972extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
Tejun Heoaa2731a2008-04-07 22:47:19 +0900973extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
974 int (*check_ready)(struct ata_link *link));
Tejun Heo936fd732007-08-06 18:36:23 +0900975extern int sata_link_debounce(struct ata_link *link,
976 const unsigned long *params, unsigned long deadline);
977extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
978 unsigned long deadline);
Tejun Heo1152b262010-09-01 17:50:05 +0200979extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
980 bool spm_wakeup);
Tejun Heocc0680a2007-08-06 18:36:23 +0900981extern int sata_link_hardreset(struct ata_link *link,
Tejun Heo9dadd452008-04-07 22:47:19 +0900982 const unsigned long *timing, unsigned long deadline,
983 bool *online, int (*check_ready)(struct ata_link *));
Tejun Heo57c9efd2008-04-07 22:47:19 +0900984extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
985 unsigned long deadline);
Tejun Heo203c75b2008-04-07 22:47:18 +0900986extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
Jeff Garzik28555682007-10-11 17:12:35 -0400987
Tejun Heof3187192007-04-17 23:44:07 +0900988extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
Tejun Heof5cda252007-04-17 23:44:07 +0900989extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
990 const struct ata_port_info * const * ppi, int n_ports);
Tejun Heob1c72912008-07-31 17:02:43 +0900991extern int ata_slave_link_init(struct ata_port *ap);
Tejun Heoecef7252007-04-17 23:44:06 +0900992extern int ata_host_start(struct ata_host *host);
Tejun Heof3187192007-04-17 23:44:07 +0900993extern int ata_host_register(struct ata_host *host,
994 struct scsi_host_template *sht);
Tejun Heof5cda252007-04-17 23:44:07 +0900995extern int ata_host_activate(struct ata_host *host, int irq,
996 irq_handler_t irq_handler, unsigned long irq_flags,
997 struct scsi_host_template *sht);
Tejun Heo0529c152007-01-20 16:00:26 +0900998extern void ata_host_detach(struct ata_host *host);
Dan Williams8d8e7d132012-07-09 21:06:08 -0700999extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *);
Jeff Garzik193515d2005-11-07 00:59:37 -05001000extern int ata_scsi_detect(struct scsi_host_template *sht);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001001extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
Jeff Garzikf2812332010-11-16 02:10:29 -05001002extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd);
Jeff Garzik94be9a52009-01-16 10:17:09 -05001003extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev,
1004 int cmd, void __user *arg);
Brian King80289162006-08-07 14:27:31 -05001005extern void ata_sas_port_destroy(struct ata_port *);
Jeff Garzikcca39742006-08-24 03:19:22 -04001006extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
Brian King80289162006-08-07 14:27:31 -05001007 struct ata_port_info *, struct Scsi_Host *);
Dan Williamsb2024452012-03-21 21:09:07 -07001008extern void ata_sas_async_probe(struct ata_port *ap);
1009extern int ata_sas_sync_probe(struct ata_port *ap);
Brian King80289162006-08-07 14:27:31 -05001010extern int ata_sas_port_init(struct ata_port *);
1011extern int ata_sas_port_start(struct ata_port *ap);
1012extern void ata_sas_port_stop(struct ata_port *ap);
1013extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
Jeff Garzikb27dcfb2010-11-17 22:56:48 -05001014extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap);
Tejun Heo936fd732007-08-06 18:36:23 +09001015extern int sata_scr_valid(struct ata_link *link);
1016extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
1017extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
1018extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
Tejun Heob5b3fa32008-07-31 17:02:42 +09001019extern bool ata_link_online(struct ata_link *link);
1020extern bool ata_link_offline(struct ata_link *link);
Tejun Heo6ffa01d2007-03-02 17:32:47 +09001021#ifdef CONFIG_PM
Jeff Garzikcca39742006-08-24 03:19:22 -04001022extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
1023extern void ata_host_resume(struct ata_host *host);
Dan Williams2fcbdcb2012-06-21 23:41:46 -07001024extern int ata_sas_port_async_suspend(struct ata_port *ap, int *async);
1025extern int ata_sas_port_async_resume(struct ata_port *ap, int *async);
1026#else
1027static inline int ata_sas_port_async_suspend(struct ata_port *ap, int *async)
1028{
1029 return 0;
1030}
1031static inline int ata_sas_port_async_resume(struct ata_port *ap, int *async)
1032{
1033 return 0;
1034}
Tejun Heo6ffa01d2007-03-02 17:32:47 +09001035#endif
Jeff Garzik67846b32005-10-05 02:58:32 -04001036extern int ata_ratelimit(void);
Tejun Heo97750ce2010-09-06 17:56:29 +02001037extern void ata_msleep(struct ata_port *ap, unsigned int msecs);
1038extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask,
1039 u32 val, unsigned long interval, unsigned long timeout);
Tejun Heo436d34b2008-04-02 17:28:46 +09001040extern int atapi_cmd_type(u8 opcode);
Tejun Heo99771262007-07-16 14:29:38 +09001041extern void ata_tf_to_fis(const struct ata_taskfile *tf,
1042 u8 pmp, int is_cmd, u8 *fis);
Jeff Garzik057ace52005-10-22 14:27:05 -04001043extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
Tejun Heo7dc951a2007-11-27 19:43:42 +09001044extern unsigned long ata_pack_xfermask(unsigned long pio_mask,
1045 unsigned long mwdma_mask, unsigned long udma_mask);
1046extern void ata_unpack_xfermask(unsigned long xfer_mask,
1047 unsigned long *pio_mask, unsigned long *mwdma_mask,
1048 unsigned long *udma_mask);
1049extern u8 ata_xfer_mask2mode(unsigned long xfer_mask);
1050extern unsigned long ata_xfer_mode2mask(u8 xfer_mode);
1051extern int ata_xfer_mode2shift(unsigned long xfer_mode);
1052extern const char *ata_mode_string(unsigned long xfer_mask);
1053extern unsigned long ata_id_xfermask(const u16 *id);
Tejun Heo31cc23b2007-09-23 13:14:12 +09001054extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
Brian Kinge46834c2006-03-17 17:04:03 -06001055extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001056extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
1057 unsigned int n_elem);
Jeff Garzik057ace52005-10-22 14:27:05 -04001058extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
Alan10305f02007-02-20 18:01:59 +00001059extern void ata_dev_disable(struct ata_device *adev);
Tejun Heo6a62a042006-02-13 10:02:46 +09001060extern void ata_id_string(const u16 *id, unsigned char *s,
1061 unsigned int ofs, unsigned int len);
1062extern void ata_id_c_string(const u16 *id, unsigned char *s,
1063 unsigned int ofs, unsigned int len);
Alan Cox963e4972008-07-24 17:16:06 +01001064extern unsigned int ata_do_dev_read_id(struct ata_device *dev,
1065 struct ata_taskfile *tf, u16 *id);
Tejun Heof686bcb2006-05-15 20:58:05 +09001066extern void ata_qc_complete(struct ata_queued_cmd *qc);
Tejun Heo79f97da2008-04-07 22:47:20 +09001067extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active);
Jeff Garzikb27dcfb2010-11-17 22:56:48 -05001068extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001069extern int ata_std_bios_param(struct scsi_device *sdev,
1070 struct block_device *bdev,
1071 sector_t capacity, int geom[]);
Tejun Heod8d91292010-05-15 20:09:34 +02001072extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001073extern int ata_scsi_slave_config(struct scsi_device *sdev);
Tejun Heo83c47bc2006-05-31 18:28:07 +09001074extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
Tejun Heoa6e6ce82006-05-15 21:03:48 +09001075extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
Mike Christiee881a172009-10-15 17:46:39 -07001076 int queue_depth, int reason);
Dan Williamsf6e67032011-09-20 15:10:33 -07001077extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev,
1078 int queue_depth, int reason);
Tejun Heo3373efd2006-05-15 20:57:53 +09001079extern struct ata_device *ata_dev_pair(struct ata_device *adev);
Tejun Heo02607312007-08-06 18:36:23 +09001080extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
James Bottomley0e0b494c2011-01-23 09:42:50 -06001081extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap);
1082extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001083
Alan Coxbe0d18d2007-03-06 02:37:56 -08001084extern int ata_cable_40wire(struct ata_port *ap);
1085extern int ata_cable_80wire(struct ata_port *ap);
1086extern int ata_cable_sata(struct ata_port *ap);
Tejun Heoc88f90c2007-11-27 19:43:48 +09001087extern int ata_cable_ignore(struct ata_port *ap);
Alan Coxbe0d18d2007-03-06 02:37:56 -08001088extern int ata_cable_unknown(struct ata_port *ap);
1089
Tejun Heo624d5c52008-03-25 22:16:41 +09001090/* Timing helpers */
Alan Cox1bc4ccf2006-01-09 17:18:14 +00001091extern unsigned int ata_pio_need_iordy(const struct ata_device *);
Tejun Heo63573572007-11-27 19:43:39 +09001092extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
Alan Cox452503f2005-10-21 19:01:32 -04001093extern int ata_timing_compute(struct ata_device *, unsigned short,
1094 struct ata_timing *, int, int);
1095extern void ata_timing_merge(const struct ata_timing *,
1096 const struct ata_timing *, struct ata_timing *,
1097 unsigned int);
Tejun Heoa0f79b92007-12-18 16:33:05 +09001098extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);
Alan Cox452503f2005-10-21 19:01:32 -04001099
Tejun Heo624d5c52008-03-25 22:16:41 +09001100/* PCI */
1101#ifdef CONFIG_PCI
1102struct pci_dev;
1103
1104struct pci_bits {
1105 unsigned int reg; /* PCI config register to read */
1106 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
1107 unsigned long mask;
1108 unsigned long val;
Alan Cox452503f2005-10-21 19:01:32 -04001109};
1110
Tejun Heo624d5c52008-03-25 22:16:41 +09001111extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
1112extern void ata_pci_remove_one(struct pci_dev *pdev);
1113
1114#ifdef CONFIG_PM
1115extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
1116extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
1117extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
1118extern int ata_pci_device_resume(struct pci_dev *pdev);
1119#endif /* CONFIG_PM */
1120#endif /* CONFIG_PCI */
1121
Brian Norrisb7db04d2012-11-02 12:29:32 -07001122struct platform_device;
1123
1124extern int ata_platform_remove_one(struct platform_device *pdev);
1125
Tejun Heo624d5c52008-03-25 22:16:41 +09001126/*
1127 * ACPI - drivers/ata/libata-acpi.c
1128 */
Alan Coxe1ddb4b2007-08-16 02:33:36 -04001129#ifdef CONFIG_ATA_ACPI
Tejun Heoc05e6ff2007-12-15 15:05:02 +09001130static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1131{
1132 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
1133 return &ap->__acpi_init_gtm;
1134 return NULL;
1135}
Tejun Heo0d02f0b2007-12-15 15:04:57 +09001136int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
1137int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
Tejun Heo7c77fa42007-12-18 16:33:03 +09001138unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev,
1139 const struct ata_acpi_gtm *gtm);
Matthew Garrett30dcf762012-06-25 16:13:04 +08001140acpi_handle ata_ap_acpi_handle(struct ata_port *ap);
1141acpi_handle ata_dev_acpi_handle(struct ata_device *dev);
Tejun Heo021ee9a2007-12-18 16:33:06 +09001142int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm);
Alan Coxe1ddb4b2007-08-16 02:33:36 -04001143#else
Tejun Heoc05e6ff2007-12-15 15:05:02 +09001144static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1145{
1146 return NULL;
1147}
Tejun Heo7c77fa42007-12-18 16:33:03 +09001148
1149static inline int ata_acpi_stm(const struct ata_port *ap,
1150 struct ata_acpi_gtm *stm)
1151{
1152 return -ENOSYS;
1153}
1154
1155static inline int ata_acpi_gtm(const struct ata_port *ap,
1156 struct ata_acpi_gtm *stm)
1157{
1158 return -ENOSYS;
1159}
1160
1161static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
1162 const struct ata_acpi_gtm *gtm)
1163{
1164 return 0;
1165}
Tejun Heo021ee9a2007-12-18 16:33:06 +09001166
1167static inline int ata_acpi_cbl_80wire(struct ata_port *ap,
1168 const struct ata_acpi_gtm *gtm)
1169{
1170 return 0;
1171}
Alan Coxe1ddb4b2007-08-16 02:33:36 -04001172#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001173
Tejun Heoece1d632006-04-02 18:51:53 +09001174/*
Tejun Heo624d5c52008-03-25 22:16:41 +09001175 * EH - drivers/ata/libata-eh.c
Tejun Heoece1d632006-04-02 18:51:53 +09001176 */
Tejun Heo7b70fc02006-05-15 20:58:07 +09001177extern void ata_port_schedule_eh(struct ata_port *ap);
Dan Williams81c757b2011-12-02 16:07:01 -08001178extern void ata_port_wait_eh(struct ata_port *ap);
Tejun Heodbd82612007-08-06 18:36:23 +09001179extern int ata_link_abort(struct ata_link *link);
Tejun Heo7b70fc02006-05-15 20:58:07 +09001180extern int ata_port_abort(struct ata_port *ap);
Tejun Heoe3180492006-05-15 20:58:09 +09001181extern int ata_port_freeze(struct ata_port *ap);
Tejun Heo7d77b242007-09-23 13:14:13 +09001182extern int sata_async_notification(struct ata_port *ap);
Tejun Heoe3180492006-05-15 20:58:09 +09001183
1184extern void ata_eh_freeze_port(struct ata_port *ap);
1185extern void ata_eh_thaw_port(struct ata_port *ap);
Tejun Heo7b70fc02006-05-15 20:58:07 +09001186
Tejun Heoece1d632006-04-02 18:51:53 +09001187extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
1188extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
Mark Lord10acf3b2008-05-02 02:14:53 -04001189extern void ata_eh_analyze_ncq_error(struct ata_link *link);
Tejun Heoece1d632006-04-02 18:51:53 +09001190
Tejun Heof5914a42006-05-31 18:27:48 +09001191extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
1192 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
1193 ata_postreset_fn_t postreset);
Tejun Heoa1efdab2008-03-25 12:22:50 +09001194extern void ata_std_error_handler(struct ata_port *ap);
Dan Williamse4a9c372012-06-21 23:25:27 -07001195extern void ata_std_sched_eh(struct ata_port *ap);
1196extern void ata_std_end_eh(struct ata_port *ap);
Kristen Carlson Accardi8a745f12011-03-04 10:24:11 -08001197extern int ata_link_nr_enabled(struct ata_link *link);
Tejun Heo022bdb02006-05-15 20:58:22 +09001198
Tejun Heo61440db2006-05-15 20:57:55 +09001199/*
Tejun Heo68d1d072008-03-25 12:22:49 +09001200 * Base operations to inherit from and initializers for sht
1201 *
1202 * Operations
1203 *
1204 * base : Common to all libata drivers.
1205 * sata : SATA controllers w/ native interface.
1206 * pmp : SATA controllers w/ PMP support.
1207 * sff : SFF ATA controllers w/o BMDMA support.
1208 * bmdma : SFF ATA controllers w/ BMDMA support.
1209 *
1210 * sht initializers
1211 *
1212 * BASE : Common to all libata drivers. The user must set
1213 * sg_tablesize and dma_boundary.
1214 * PIO : SFF ATA controllers w/ only PIO support.
1215 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and
1216 * dma_boundary are set to BMDMA limits.
1217 * NCQ : SATA controllers supporting NCQ. The user must set
1218 * sg_tablesize, dma_boundary and can_queue.
1219 */
1220extern const struct ata_port_operations ata_base_port_ops;
1221extern const struct ata_port_operations sata_port_ops;
Elias Oltmanns45fabbb2008-09-21 11:54:08 +02001222extern struct device_attribute *ata_common_sdev_attrs[];
Tejun Heo68d1d072008-03-25 12:22:49 +09001223
1224#define ATA_BASE_SHT(drv_name) \
1225 .module = THIS_MODULE, \
1226 .name = drv_name, \
1227 .ioctl = ata_scsi_ioctl, \
1228 .queuecommand = ata_scsi_queuecmd, \
1229 .can_queue = ATA_DEF_QUEUE, \
1230 .this_id = ATA_SHT_THIS_ID, \
1231 .cmd_per_lun = ATA_SHT_CMD_PER_LUN, \
1232 .emulated = ATA_SHT_EMULATED, \
1233 .use_clustering = ATA_SHT_USE_CLUSTERING, \
1234 .proc_name = drv_name, \
1235 .slave_configure = ata_scsi_slave_config, \
1236 .slave_destroy = ata_scsi_slave_destroy, \
Elias Oltmanns45fabbb2008-09-21 11:54:08 +02001237 .bios_param = ata_std_bios_param, \
Tejun Heod8d91292010-05-15 20:09:34 +02001238 .unlock_native_capacity = ata_scsi_unlock_native_capacity, \
Elias Oltmanns45fabbb2008-09-21 11:54:08 +02001239 .sdev_attrs = ata_common_sdev_attrs
Tejun Heo68d1d072008-03-25 12:22:49 +09001240
Tejun Heo68d1d072008-03-25 12:22:49 +09001241#define ATA_NCQ_SHT(drv_name) \
1242 ATA_BASE_SHT(drv_name), \
1243 .change_queue_depth = ata_scsi_change_queue_depth
1244
1245/*
Tejun Heo071f44b2008-04-07 22:47:22 +09001246 * PMP helpers
1247 */
Tejun Heo88fcd562008-04-07 22:47:22 +09001248#ifdef CONFIG_SATA_PMP
Tejun Heo071f44b2008-04-07 22:47:22 +09001249static inline bool sata_pmp_supported(struct ata_port *ap)
1250{
1251 return ap->flags & ATA_FLAG_PMP;
1252}
1253
1254static inline bool sata_pmp_attached(struct ata_port *ap)
1255{
1256 return ap->nr_pmp_links != 0;
1257}
1258
1259static inline int ata_is_host_link(const struct ata_link *link)
1260{
Tejun Heob1c72912008-07-31 17:02:43 +09001261 return link == &link->ap->link || link == link->ap->slave_link;
Tejun Heo071f44b2008-04-07 22:47:22 +09001262}
Tejun Heo88fcd562008-04-07 22:47:22 +09001263#else /* CONFIG_SATA_PMP */
1264static inline bool sata_pmp_supported(struct ata_port *ap)
1265{
1266 return false;
1267}
1268
1269static inline bool sata_pmp_attached(struct ata_port *ap)
1270{
1271 return false;
1272}
1273
1274static inline int ata_is_host_link(const struct ata_link *link)
1275{
1276 return 1;
1277}
1278#endif /* CONFIG_SATA_PMP */
Tejun Heo071f44b2008-04-07 22:47:22 +09001279
1280static inline int sata_srst_pmp(struct ata_link *link)
1281{
1282 if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
1283 return SATA_PMP_CTRL_PORT;
1284 return link->pmp;
1285}
1286
1287/*
Tejun Heo61440db2006-05-15 20:57:55 +09001288 * printk helpers
1289 */
Joe Perchesb9075fa2011-10-31 17:11:33 -07001290__printf(3, 4)
Joe Perchesa9a79df2011-04-15 15:51:59 -07001291int ata_port_printk(const struct ata_port *ap, const char *level,
1292 const char *fmt, ...);
Joe Perchesb9075fa2011-10-31 17:11:33 -07001293__printf(3, 4)
Joe Perchesa9a79df2011-04-15 15:51:59 -07001294int ata_link_printk(const struct ata_link *link, const char *level,
1295 const char *fmt, ...);
Joe Perchesb9075fa2011-10-31 17:11:33 -07001296__printf(3, 4)
Joe Perchesa9a79df2011-04-15 15:51:59 -07001297int ata_dev_printk(const struct ata_device *dev, const char *level,
1298 const char *fmt, ...);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001299
Joe Perchesa9a79df2011-04-15 15:51:59 -07001300#define ata_port_err(ap, fmt, ...) \
1301 ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__)
1302#define ata_port_warn(ap, fmt, ...) \
1303 ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__)
1304#define ata_port_notice(ap, fmt, ...) \
1305 ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__)
1306#define ata_port_info(ap, fmt, ...) \
1307 ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__)
1308#define ata_port_dbg(ap, fmt, ...) \
1309 ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__)
Tejun Heo9af5c9c2007-08-06 18:36:22 +09001310
Joe Perchesa9a79df2011-04-15 15:51:59 -07001311#define ata_link_err(link, fmt, ...) \
1312 ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__)
1313#define ata_link_warn(link, fmt, ...) \
1314 ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__)
1315#define ata_link_notice(link, fmt, ...) \
1316 ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__)
1317#define ata_link_info(link, fmt, ...) \
1318 ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__)
1319#define ata_link_dbg(link, fmt, ...) \
1320 ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__)
1321
1322#define ata_dev_err(dev, fmt, ...) \
1323 ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__)
1324#define ata_dev_warn(dev, fmt, ...) \
1325 ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__)
1326#define ata_dev_notice(dev, fmt, ...) \
1327 ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__)
1328#define ata_dev_info(dev, fmt, ...) \
1329 ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__)
1330#define ata_dev_dbg(dev, fmt, ...) \
1331 ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__)
Tejun Heo61440db2006-05-15 20:57:55 +09001332
Joe Perches06296a12011-04-15 15:52:00 -07001333void ata_print_version(const struct device *dev, const char *version);
1334
Tejun Heo61440db2006-05-15 20:57:55 +09001335/*
Tejun Heof3e81b12006-05-15 20:58:21 +09001336 * ata_eh_info helpers
1337 */
Joe Perchesb9075fa2011-10-31 17:11:33 -07001338extern __printf(2, 3)
1339void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1340extern __printf(2, 3)
1341void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
Tejun Heob64bbc32007-07-16 14:29:39 +09001342extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
Tejun Heof3e81b12006-05-15 20:58:21 +09001343
Tejun Heoc0b6c032006-07-03 16:07:26 +09001344static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
1345{
Tejun Heob558edd2008-01-24 00:05:14 +09001346 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
Tejun Heof8f1e1c2007-07-16 14:29:40 +09001347 ehi->flags |= ATA_EHI_HOTPLUGGED;
Tejun Heob558edd2008-01-24 00:05:14 +09001348 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;
Tejun Heoc0b6c032006-07-03 16:07:26 +09001349 ehi->err_mask |= AC_ERR_ATA_BUS;
1350}
1351
Tejun Heof3e81b12006-05-15 20:58:21 +09001352/*
Tejun Heocbcdd872007-08-18 13:14:55 +09001353 * port description helpers
1354 */
Joe Perchesb9075fa2011-10-31 17:11:33 -07001355extern __printf(2, 3)
1356void ata_port_desc(struct ata_port *ap, const char *fmt, ...);
Tejun Heocbcdd872007-08-18 13:14:55 +09001357#ifdef CONFIG_PCI
1358extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
1359 const char *name);
1360#endif
1361
Linus Torvalds1da177e2005-04-16 15:20:36 -07001362static inline unsigned int ata_tag_valid(unsigned int tag)
1363{
1364 return (tag < ATA_MAX_QUEUE) ? 1 : 0;
1365}
1366
Tejun Heo2ab7db12006-05-15 20:58:02 +09001367static inline unsigned int ata_tag_internal(unsigned int tag)
1368{
Yoichi Yuasa83c063d2008-02-28 21:43:13 +09001369 return tag == ATA_TAG_INTERNAL;
Tejun Heo2ab7db12006-05-15 20:58:02 +09001370}
1371
Tejun Heo5806db22006-06-24 20:30:19 +09001372/*
1373 * device helpers
1374 */
Tejun Heoe1211e32006-04-01 01:38:18 +09001375static inline unsigned int ata_class_enabled(unsigned int class)
Tejun Heo597afd22006-03-01 01:25:38 +09001376{
Tejun Heoe0a71752007-09-23 13:14:12 +09001377 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
1378 class == ATA_DEV_PMP || class == ATA_DEV_SEMB;
Tejun Heo597afd22006-03-01 01:25:38 +09001379}
1380
Tejun Heoe1211e32006-04-01 01:38:18 +09001381static inline unsigned int ata_class_disabled(unsigned int class)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001382{
Tejun Heoe0a71752007-09-23 13:14:12 +09001383 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
1384 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP;
Tejun Heoe1211e32006-04-01 01:38:18 +09001385}
1386
Tejun Heo002c8052006-04-02 17:54:46 +09001387static inline unsigned int ata_class_absent(unsigned int class)
1388{
1389 return !ata_class_enabled(class) && !ata_class_disabled(class);
1390}
1391
Tejun Heoe1211e32006-04-01 01:38:18 +09001392static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
1393{
1394 return ata_class_enabled(dev->class);
1395}
1396
1397static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
1398{
1399 return ata_class_disabled(dev->class);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001400}
1401
Tejun Heo002c8052006-04-02 17:54:46 +09001402static inline unsigned int ata_dev_absent(const struct ata_device *dev)
1403{
1404 return ata_class_absent(dev->class);
1405}
1406
Tejun Heo5806db22006-06-24 20:30:19 +09001407/*
Tejun Heof58229f2007-08-06 18:36:23 +09001408 * link helpers
Tejun Heo5806db22006-06-24 20:30:19 +09001409 */
Tejun Heof58229f2007-08-06 18:36:23 +09001410static inline int ata_link_max_devices(const struct ata_link *link)
Tejun Heo5806db22006-06-24 20:30:19 +09001411{
Tejun Heo89898052007-08-06 18:36:23 +09001412 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS)
Tejun Heo5806db22006-06-24 20:30:19 +09001413 return 2;
1414 return 1;
1415}
1416
Tejun Heoda917d62007-09-23 13:14:12 +09001417static inline int ata_link_active(struct ata_link *link)
1418{
1419 return ata_tag_valid(link->active_tag) || link->sactive;
1420}
1421
Tejun Heo1eca4362008-11-03 20:03:17 +09001422/*
1423 * Iterators
1424 *
1425 * ATA_LITER_* constants are used to select link iteration mode and
1426 * ATA_DITER_* device iteration mode.
1427 *
1428 * For a custom iteration directly using ata_{link|dev}_next(), if
1429 * @link or @dev, respectively, is NULL, the first element is
1430 * returned. @dev and @link can be any valid device or link and the
1431 * next element according to the iteration mode will be returned.
1432 * After the last element, NULL is returned.
1433 */
1434enum ata_link_iter_mode {
1435 ATA_LITER_EDGE, /* if present, PMP links only; otherwise,
1436 * host link. no slave link */
1437 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */
1438 ATA_LITER_PMP_FIRST, /* PMP links followed by host link,
1439 * slave link still comes after host link */
1440};
Tejun Heo89898052007-08-06 18:36:23 +09001441
Tejun Heo1eca4362008-11-03 20:03:17 +09001442enum ata_dev_iter_mode {
1443 ATA_DITER_ENABLED,
1444 ATA_DITER_ENABLED_REVERSE,
1445 ATA_DITER_ALL,
1446 ATA_DITER_ALL_REVERSE,
1447};
Tejun Heo89898052007-08-06 18:36:23 +09001448
Tejun Heo1eca4362008-11-03 20:03:17 +09001449extern struct ata_link *ata_link_next(struct ata_link *link,
1450 struct ata_port *ap,
1451 enum ata_link_iter_mode mode);
Tejun Heof58229f2007-08-06 18:36:23 +09001452
Tejun Heo1eca4362008-11-03 20:03:17 +09001453extern struct ata_device *ata_dev_next(struct ata_device *dev,
1454 struct ata_link *link,
1455 enum ata_dev_iter_mode mode);
Tejun Heof58229f2007-08-06 18:36:23 +09001456
Tejun Heo1eca4362008-11-03 20:03:17 +09001457/*
1458 * Shortcut notation for iterations
1459 *
1460 * ata_for_each_link() iterates over each link of @ap according to
1461 * @mode. @link points to the current link in the loop. @link is
1462 * NULL after loop termination. ata_for_each_dev() works the same way
1463 * except that it iterates over each device of @link.
1464 *
1465 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be
1466 * specified when using the following shorthand notations. Only the
1467 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be
1468 * specified. This not only increases brevity but also makes it
1469 * impossible to use ATA_LITER_* for device iteration or vice-versa.
1470 */
1471#define ata_for_each_link(link, ap, mode) \
1472 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1473 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1474
1475#define ata_for_each_dev(dev, link, mode) \
1476 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1477 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
Tejun Heo5806db22006-06-24 20:30:19 +09001478
Tejun Heo6d1245b2007-02-20 23:20:27 +09001479/**
1480 * ata_ncq_enabled - Test whether NCQ is enabled
1481 * @dev: ATA device to test for
1482 *
1483 * LOCKING:
1484 * spin_lock_irqsave(host lock)
1485 *
1486 * RETURNS:
1487 * 1 if NCQ is enabled for @dev, 0 otherwise.
1488 */
1489static inline int ata_ncq_enabled(struct ata_device *dev)
1490{
1491 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF |
1492 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
1493}
Edward Falk0baab862005-06-02 18:17:13 -04001494
Linus Torvalds1da177e2005-04-16 15:20:36 -07001495static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
1496{
1497 qc->tf.ctl |= ATA_NIEN;
1498}
1499
Tejun Heof69499f2006-05-15 20:58:03 +09001500static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
1501 unsigned int tag)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001502{
1503 if (likely(ata_tag_valid(tag)))
1504 return &ap->qcmd[tag];
1505 return NULL;
1506}
1507
Tejun Heof69499f2006-05-15 20:58:03 +09001508static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
1509 unsigned int tag)
1510{
1511 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
1512
1513 if (unlikely(!qc) || !ap->ops->error_handler)
1514 return qc;
1515
1516 if ((qc->flags & (ATA_QCFLAG_ACTIVE |
1517 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE)
1518 return qc;
1519
1520 return NULL;
1521}
1522
Tejun Heoaacda372008-03-18 17:47:43 +09001523static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc)
1524{
1525 return qc->nbytes - min(qc->extrabytes, qc->nbytes);
1526}
1527
Tejun Heo3373efd2006-05-15 20:57:53 +09001528static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001529{
1530 memset(tf, 0, sizeof(*tf));
1531
Tejun Heo5fe74542010-05-10 21:41:37 +02001532#ifdef CONFIG_ATA_SFF
Tejun Heo9af5c9c2007-08-06 18:36:22 +09001533 tf->ctl = dev->link->ap->ctl;
Tejun Heo5fe74542010-05-10 21:41:37 +02001534#else
1535 tf->ctl = ATA_DEVCTL_OBS;
1536#endif
Tejun Heo3373efd2006-05-15 20:57:53 +09001537 if (dev->devno == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001538 tf->device = ATA_DEVICE_OBS;
1539 else
1540 tf->device = ATA_DEVICE_OBS | ATA_DEV1;
1541}
1542
Jeff Garzik2c13b7c2005-11-14 14:14:16 -05001543static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
1544{
Tejun Heo501e0c502007-01-17 11:34:02 +09001545 qc->dma_dir = DMA_NONE;
Tejun Heoff2aeb12007-12-05 16:43:11 +09001546 qc->sg = NULL;
Jeff Garzik2c13b7c2005-11-14 14:14:16 -05001547 qc->flags = 0;
Jens Axboe87260212007-10-16 11:14:12 +02001548 qc->cursg = NULL;
1549 qc->cursg_ofs = 0;
Tejun Heoaacda372008-03-18 17:47:43 +09001550 qc->nbytes = qc->extrabytes = qc->curbytes = 0;
Brian King7a801182007-01-17 12:32:12 -06001551 qc->n_elem = 0;
Albert Leea22e2eb2005-12-05 15:38:02 +08001552 qc->err_mask = 0;
Mark Lord5a5dbd12007-03-16 10:22:26 -04001553 qc->sect_size = ATA_SECT_SIZE;
Jeff Garzik2c13b7c2005-11-14 14:14:16 -05001554
Tejun Heo3373efd2006-05-15 20:57:53 +09001555 ata_tf_init(qc->dev, &qc->tf);
Tejun Heoe61e0672006-05-15 20:57:40 +09001556
1557 /* init result_tf such that it indicates normal completion */
1558 qc->result_tf.command = ATA_DRDY;
1559 qc->result_tf.feature = 0;
Jeff Garzik2c13b7c2005-11-14 14:14:16 -05001560}
1561
Jeff Garzik057ace52005-10-22 14:27:05 -04001562static inline int ata_try_flush_cache(const struct ata_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001563{
1564 return ata_id_wcache_enabled(dev->id) ||
1565 ata_id_has_flush(dev->id) ||
1566 ata_id_has_flush_ext(dev->id);
1567}
1568
Jeff Garzika7dac442005-10-30 04:44:42 -05001569static inline unsigned int ac_err_mask(u8 status)
1570{
Albert Lee3655d1d2006-05-19 11:43:04 +08001571 if (status & (ATA_BUSY | ATA_DRQ))
Tejun Heo11a56d22006-01-23 13:09:36 +09001572 return AC_ERR_HSM;
Jeff Garzika7dac442005-10-30 04:44:42 -05001573 if (status & (ATA_ERR | ATA_DF))
1574 return AC_ERR_DEV;
1575 return 0;
1576}
1577
1578static inline unsigned int __ac_err_mask(u8 status)
1579{
1580 unsigned int mask = ac_err_mask(status);
1581 if (mask == 0)
1582 return AC_ERR_OTHER;
1583 return mask;
1584}
1585
Jeff Garzik35bb94b2006-04-11 13:12:34 -04001586static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
1587{
Tejun Heo49114872007-04-17 23:44:06 +09001588 return *(struct ata_port **)&host->hostdata[0];
Jeff Garzik35bb94b2006-04-11 13:12:34 -04001589}
1590
Tejun Heo78ab88f2008-05-01 23:41:41 +09001591static inline int ata_check_ready(u8 status)
1592{
Jeff Garzik005b1f72008-05-09 15:00:55 -04001593 if (!(status & ATA_BUSY))
1594 return 1;
Tejun Heo78ab88f2008-05-01 23:41:41 +09001595
1596 /* 0xff indicates either no device or device not ready */
1597 if (status == 0xff)
1598 return -ENODEV;
1599
Jeff Garzik005b1f72008-05-09 15:00:55 -04001600 return 0;
Tejun Heo78ab88f2008-05-01 23:41:41 +09001601}
1602
Tejun Heo341c2c92008-05-20 02:17:51 +09001603static inline unsigned long ata_deadline(unsigned long from_jiffies,
1604 unsigned long timeout_msecs)
1605{
1606 return from_jiffies + msecs_to_jiffies(timeout_msecs);
1607}
1608
Alan Coxb15b3eb2008-08-01 09:18:34 +01001609/* Don't open code these in drivers as there are traps. Firstly the range may
1610 change in future hardware and specs, secondly 0xFF means 'no DMA' but is
1611 > UDMA_0. Dyma ddreigiau */
1612
1613static inline int ata_using_mwdma(struct ata_device *adev)
1614{
1615 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4)
1616 return 1;
1617 return 0;
1618}
1619
1620static inline int ata_using_udma(struct ata_device *adev)
1621{
1622 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7)
1623 return 1;
1624 return 0;
1625}
1626
1627static inline int ata_dma_enabled(struct ata_device *adev)
1628{
1629 return (adev->dma_mode == 0xFF ? 0 : 1);
1630}
Tejun Heo48515f62008-04-07 22:47:21 +09001631
1632/**************************************************************************
1633 * PMP - drivers/ata/libata-pmp.c
1634 */
Tejun Heo88fcd562008-04-07 22:47:22 +09001635#ifdef CONFIG_SATA_PMP
1636
Tejun Heo48515f62008-04-07 22:47:21 +09001637extern const struct ata_port_operations sata_pmp_port_ops;
1638
1639extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
1640extern void sata_pmp_error_handler(struct ata_port *ap);
1641
Tejun Heo88fcd562008-04-07 22:47:22 +09001642#else /* CONFIG_SATA_PMP */
1643
1644#define sata_pmp_port_ops sata_port_ops
1645#define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1646#define sata_pmp_error_handler ata_std_error_handler
1647
1648#endif /* CONFIG_SATA_PMP */
1649
Tejun Heo48515f62008-04-07 22:47:21 +09001650
Tejun Heo624d5c52008-03-25 22:16:41 +09001651/**************************************************************************
1652 * SFF - drivers/ata/libata-sff.c
1653 */
Tejun Heo127102a2008-04-07 22:47:21 +09001654#ifdef CONFIG_ATA_SFF
1655
Tejun Heo624d5c52008-03-25 22:16:41 +09001656extern const struct ata_port_operations ata_sff_port_ops;
Alan Cox871af122009-01-05 14:16:39 +00001657extern const struct ata_port_operations ata_bmdma32_port_ops;
Tejun Heo624d5c52008-03-25 22:16:41 +09001658
1659/* PIO only, sg_tablesize and dma_boundary limits can be removed */
1660#define ATA_PIO_SHT(drv_name) \
1661 ATA_BASE_SHT(drv_name), \
1662 .sg_tablesize = LIBATA_MAX_PRD, \
1663 .dma_boundary = ATA_DMA_BOUNDARY
1664
Tejun Heo9363c382008-04-07 22:47:16 +09001665extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
1666extern u8 ata_sff_check_status(struct ata_port *ap);
Alan Coxa57c1ba2008-05-29 22:10:58 +01001667extern void ata_sff_pause(struct ata_port *ap);
1668extern void ata_sff_dma_pause(struct ata_port *ap);
Tejun Heo9363c382008-04-07 22:47:16 +09001669extern int ata_sff_busy_sleep(struct ata_port *ap,
1670 unsigned long timeout_pat, unsigned long timeout);
Tejun Heo705e76b2008-04-07 22:47:19 +09001671extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline);
Tejun Heo9363c382008-04-07 22:47:16 +09001672extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
1673extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
1674extern void ata_sff_exec_command(struct ata_port *ap,
1675 const struct ata_taskfile *tf);
1676extern unsigned int ata_sff_data_xfer(struct ata_device *dev,
Tejun Heo624d5c52008-03-25 22:16:41 +09001677 unsigned char *buf, unsigned int buflen, int rw);
Alan Cox871af122009-01-05 14:16:39 +00001678extern unsigned int ata_sff_data_xfer32(struct ata_device *dev,
1679 unsigned char *buf, unsigned int buflen, int rw);
Tejun Heo9363c382008-04-07 22:47:16 +09001680extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev,
Tejun Heo624d5c52008-03-25 22:16:41 +09001681 unsigned char *buf, unsigned int buflen, int rw);
Sergei Shtylyove42a5422010-05-07 22:49:02 +04001682extern void ata_sff_irq_on(struct ata_port *ap);
Tejun Heo9363c382008-04-07 22:47:16 +09001683extern void ata_sff_irq_clear(struct ata_port *ap);
1684extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
1685 u8 status, int in_wq);
Viresh Kumar64b97592011-02-22 14:32:38 +05301686extern void ata_sff_queue_work(struct work_struct *work);
1687extern void ata_sff_queue_delayed_work(struct delayed_work *dwork,
1688 unsigned long delay);
Gwendal Grignouea3c6452010-08-31 16:20:36 -07001689extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay);
Tejun Heo9363c382008-04-07 22:47:16 +09001690extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
Tejun Heo22183bf2008-04-07 22:47:20 +09001691extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
Tejun Heoc3b28892010-05-19 22:10:21 +02001692extern unsigned int ata_sff_port_intr(struct ata_port *ap,
Tejun Heo9363c382008-04-07 22:47:16 +09001693 struct ata_queued_cmd *qc);
1694extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
Alan Coxc96f1732009-03-24 10:23:46 +00001695extern void ata_sff_lost_interrupt(struct ata_port *ap);
Tejun Heo9363c382008-04-07 22:47:16 +09001696extern void ata_sff_freeze(struct ata_port *ap);
1697extern void ata_sff_thaw(struct ata_port *ap);
1698extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
1699extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
1700 u8 *r_err);
Tejun Heo705e76b2008-04-07 22:47:19 +09001701extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
1702 unsigned long deadline);
Tejun Heo9363c382008-04-07 22:47:16 +09001703extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
Tejun Heo624d5c52008-03-25 22:16:41 +09001704 unsigned long deadline);
Tejun Heo9363c382008-04-07 22:47:16 +09001705extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
1706 unsigned long deadline);
1707extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
Alan Cox3d47aa82009-03-24 10:23:19 +00001708extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
Tejun Heo9363c382008-04-07 22:47:16 +09001709extern void ata_sff_error_handler(struct ata_port *ap);
Tejun Heo9363c382008-04-07 22:47:16 +09001710extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
Tejun Heo624d5c52008-03-25 22:16:41 +09001711#ifdef CONFIG_PCI
Tejun Heo9363c382008-04-07 22:47:16 +09001712extern int ata_pci_sff_init_host(struct ata_host *host);
1713extern int ata_pci_sff_prepare_host(struct pci_dev *pdev,
Tejun Heo624d5c52008-03-25 22:16:41 +09001714 const struct ata_port_info * const * ppi,
1715 struct ata_host **r_host);
Tejun Heo9363c382008-04-07 22:47:16 +09001716extern int ata_pci_sff_activate_host(struct ata_host *host,
Tejun Heo624d5c52008-03-25 22:16:41 +09001717 irq_handler_t irq_handler,
1718 struct scsi_host_template *sht);
Tejun Heo9363c382008-04-07 22:47:16 +09001719extern int ata_pci_sff_init_one(struct pci_dev *pdev,
Alan Cox16ea0fc2010-02-23 02:26:06 -05001720 const struct ata_port_info * const * ppi,
1721 struct scsi_host_template *sht, void *host_priv, int hflags);
Tejun Heo624d5c52008-03-25 22:16:41 +09001722#endif /* CONFIG_PCI */
1723
Tejun Heo9a7780c2010-05-19 22:10:24 +02001724#ifdef CONFIG_ATA_BMDMA
1725
1726extern const struct ata_port_operations ata_bmdma_port_ops;
1727
1728#define ATA_BMDMA_SHT(drv_name) \
1729 ATA_BASE_SHT(drv_name), \
1730 .sg_tablesize = LIBATA_MAX_PRD, \
1731 .dma_boundary = ATA_DMA_BOUNDARY
1732
Tejun Heof47451c2010-05-10 21:41:40 +02001733extern void ata_bmdma_qc_prep(struct ata_queued_cmd *qc);
Tejun Heo360ff782010-05-10 21:41:42 +02001734extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc);
Tejun Heof47451c2010-05-10 21:41:40 +02001735extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc);
Tejun Heoc3b28892010-05-19 22:10:21 +02001736extern unsigned int ata_bmdma_port_intr(struct ata_port *ap,
1737 struct ata_queued_cmd *qc);
1738extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance);
Tejun Heofe06e5f2010-05-10 21:41:39 +02001739extern void ata_bmdma_error_handler(struct ata_port *ap);
1740extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
Tejun Heo37f65b82010-05-19 22:10:20 +02001741extern void ata_bmdma_irq_clear(struct ata_port *ap);
Tejun Heo9f2f7212010-05-10 21:41:32 +02001742extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
1743extern void ata_bmdma_start(struct ata_queued_cmd *qc);
1744extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
1745extern u8 ata_bmdma_status(struct ata_port *ap);
Tejun Heoc7087652010-05-10 21:41:34 +02001746extern int ata_bmdma_port_start(struct ata_port *ap);
1747extern int ata_bmdma_port_start32(struct ata_port *ap);
Tejun Heo9f2f7212010-05-10 21:41:32 +02001748
1749#ifdef CONFIG_PCI
1750extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
Tejun Heoc7087652010-05-10 21:41:34 +02001751extern void ata_pci_bmdma_init(struct ata_host *host);
Tejun Heo1c5afdf2010-05-19 22:10:22 +02001752extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev,
1753 const struct ata_port_info * const * ppi,
1754 struct ata_host **r_host);
1755extern int ata_pci_bmdma_init_one(struct pci_dev *pdev,
1756 const struct ata_port_info * const * ppi,
1757 struct scsi_host_template *sht,
1758 void *host_priv, int hflags);
Tejun Heo9f2f7212010-05-10 21:41:32 +02001759#endif /* CONFIG_PCI */
Tejun Heo9a7780c2010-05-19 22:10:24 +02001760#endif /* CONFIG_ATA_BMDMA */
Tejun Heo9f2f7212010-05-10 21:41:32 +02001761
Tejun Heo624d5c52008-03-25 22:16:41 +09001762/**
Tejun Heo9363c382008-04-07 22:47:16 +09001763 * ata_sff_busy_wait - Wait for a port status register
Tejun Heo624d5c52008-03-25 22:16:41 +09001764 * @ap: Port to wait for.
1765 * @bits: bits that must be clear
1766 * @max: number of 10uS waits to perform
1767 *
1768 * Waits up to max*10 microseconds for the selected bits in the port's
1769 * status register to be cleared.
1770 * Returns final value of status register.
1771 *
1772 * LOCKING:
1773 * Inherited from caller.
1774 */
Tejun Heo9363c382008-04-07 22:47:16 +09001775static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits,
1776 unsigned int max)
Tejun Heo624d5c52008-03-25 22:16:41 +09001777{
1778 u8 status;
1779
1780 do {
1781 udelay(10);
Tejun Heo5682ed32008-04-07 22:47:16 +09001782 status = ap->ops->sff_check_status(ap);
Tejun Heo624d5c52008-03-25 22:16:41 +09001783 max--;
1784 } while (status != 0xff && (status & bits) && (max > 0));
1785
1786 return status;
1787}
1788
1789/**
1790 * ata_wait_idle - Wait for a port to be idle.
1791 * @ap: Port to wait for.
1792 *
1793 * Waits up to 10ms for port's BUSY and DRQ signals to clear.
1794 * Returns final value of status register.
1795 *
1796 * LOCKING:
1797 * Inherited from caller.
1798 */
1799static inline u8 ata_wait_idle(struct ata_port *ap)
1800{
Tejun Heo9363c382008-04-07 22:47:16 +09001801 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
Tejun Heo624d5c52008-03-25 22:16:41 +09001802
1803#ifdef ATA_DEBUG
1804 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
1805 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n",
1806 status);
1807#endif
1808
1809 return status;
1810}
Tejun Heo127102a2008-04-07 22:47:21 +09001811#endif /* CONFIG_ATA_SFF */
Tejun Heo624d5c52008-03-25 22:16:41 +09001812
Linus Torvalds1da177e2005-04-16 15:20:36 -07001813#endif /* __LINUX_LIBATA_H__ */