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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Jeff Garzikaf36d7f2005-08-28 20:18:39 -04002 * Copyright 2003-2005 Red Hat, Inc. All rights reserved.
3 * Copyright 2003-2005 Jeff Garzik
4 *
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2, or (at your option)
9 * any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; see the file COPYING. If not, write to
18 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
19 *
20 *
21 * libata documentation is available via 'make {ps|pdf}docs',
22 * as Documentation/DocBook/libata.*
23 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070024 */
25
26#ifndef __LINUX_LIBATA_H__
27#define __LINUX_LIBATA_H__
28
29#include <linux/delay.h>
Tejun Heo341c2c92008-05-20 02:17:51 +090030#include <linux/jiffies.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#include <linux/interrupt.h>
Andrew Morton1c72d8d2005-11-10 16:21:38 -080032#include <linux/dma-mapping.h>
Jens Axboe87260212007-10-16 11:14:12 +020033#include <linux/scatterlist.h>
Tejun Heof0d36ef2007-01-20 16:00:28 +090034#include <linux/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070035#include <linux/ata.h>
36#include <linux/workqueue.h>
Jeff Garzik35bb94b2006-04-11 13:12:34 -040037#include <scsi/scsi_host.h>
Kristen Carlson Accardi11ef6972006-09-28 11:29:01 -070038#include <linux/acpi.h>
Tejun Heoceb0c642007-12-05 16:43:06 +090039#include <linux/cdrom.h>
Tejun Heoc0c362b2010-09-06 17:57:14 +020040#include <linux/sched.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070041
Jeff Garzika6d967a2006-09-25 15:33:09 -040042/*
43 * Define if arch has non-standard setup. This is a _PCI_ standard
44 * not a legacy or ISA standard.
45 */
46#ifdef CONFIG_ATA_NONSTANDARD
Alan Cox2ec7df02006-08-10 16:59:10 +090047#include <asm/libata-portmap.h>
Jeff Garzika6d967a2006-09-25 15:33:09 -040048#else
49#include <asm-generic/libata-portmap.h>
50#endif
Alan Cox2ec7df02006-08-10 16:59:10 +090051
Linus Torvalds1da177e2005-04-16 15:20:36 -070052/*
Randy Dunlapbfd60572006-01-17 19:34:42 -050053 * compile-time options: to be removed as soon as all the drivers are
54 * converted to the new debugging mechanism
Linus Torvalds1da177e2005-04-16 15:20:36 -070055 */
56#undef ATA_DEBUG /* debugging output */
57#undef ATA_VERBOSE_DEBUG /* yet more debugging output */
58#undef ATA_IRQ_TRAP /* define to ack screaming irqs */
59#undef ATA_NDEBUG /* define to disable quick runtime checks */
Linus Torvalds1da177e2005-04-16 15:20:36 -070060
61
62/* note: prints function name for you */
63#ifdef ATA_DEBUG
Alexander Beregalov1f938d02008-07-21 00:06:19 +040064#define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
Linus Torvalds1da177e2005-04-16 15:20:36 -070065#ifdef ATA_VERBOSE_DEBUG
Alexander Beregalov1f938d02008-07-21 00:06:19 +040066#define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
Linus Torvalds1da177e2005-04-16 15:20:36 -070067#else
68#define VPRINTK(fmt, args...)
69#endif /* ATA_VERBOSE_DEBUG */
70#else
71#define DPRINTK(fmt, args...)
72#define VPRINTK(fmt, args...)
73#endif /* ATA_DEBUG */
74
Alexander Beregalov1f938d02008-07-21 00:06:19 +040075#define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args)
Jeff Garzik2c13b7c2005-11-14 14:14:16 -050076
Randy Dunlapbfd60572006-01-17 19:34:42 -050077/* NEW: debug levels */
78#define HAVE_LIBATA_MSG 1
79
80enum {
81 ATA_MSG_DRV = 0x0001,
82 ATA_MSG_INFO = 0x0002,
83 ATA_MSG_PROBE = 0x0004,
84 ATA_MSG_WARN = 0x0008,
85 ATA_MSG_MALLOC = 0x0010,
86 ATA_MSG_CTL = 0x0020,
87 ATA_MSG_INTR = 0x0040,
88 ATA_MSG_ERR = 0x0080,
89};
90
91#define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV)
92#define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO)
93#define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE)
94#define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN)
95#define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
96#define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL)
97#define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR)
98#define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR)
99
100static inline u32 ata_msg_init(int dval, int default_msg_enable_bits)
101{
102 if (dval < 0 || dval >= (sizeof(u32) * 8))
103 return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */
104 if (!dval)
105 return 0;
106 return (1 << dval) - 1;
107}
108
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109/* defines only for the constants which don't work well as enums */
110#define ATA_TAG_POISON 0xfafbfcfdU
111
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112enum {
113 /* various global constants */
114 LIBATA_MAX_PRD = ATA_MAX_PRD / 2,
Alan Coxd26fc952007-07-06 19:13:52 -0400115 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116 ATA_DEF_QUEUE = 1,
Tejun Heo2ab7db12006-05-15 20:58:02 +0900117 /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */
Tejun Heoa6e6ce82006-05-15 21:03:48 +0900118 ATA_MAX_QUEUE = 32,
Tejun Heo2ab7db12006-05-15 20:58:02 +0900119 ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1,
Tejun Heo341c2c92008-05-20 02:17:51 +0900120 ATA_SHORT_PAUSE = 16,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121
Tejun Heo140b5e52007-12-12 12:21:52 +0900122 ATAPI_MAX_DRAIN = 16 << 10,
123
Tejun Heob558edd2008-01-24 00:05:14 +0900124 ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1,
125
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 ATA_SHT_EMULATED = 1,
127 ATA_SHT_CMD_PER_LUN = 1,
128 ATA_SHT_THIS_ID = -1,
Jeff Garzikcf482932005-10-22 00:19:33 -0400129 ATA_SHT_USE_CLUSTERING = 1,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130
131 /* struct ata_device stuff */
Tejun Heo949b38a2006-04-02 18:51:52 +0900132 ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */
133 ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */
Jeff Garzik029f5462006-04-02 10:30:40 -0400134 ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */
Tejun Heo88e49032006-05-15 21:03:38 +0900135 ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */
Tejun Heo6fc49ad2006-11-11 20:10:45 +0900136 ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */
Tejun Heo67465442007-05-15 03:28:16 +0900137 ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */
138 ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */
Tejun Heo7d77b242007-09-23 13:14:13 +0900139 ATA_DFLAG_AN = (1 << 7), /* AN configured */
Tejun Heo91163002008-02-21 13:25:50 +0900140 ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */
Kristen Carlson Accardi25571642007-09-11 11:41:59 -0700141 ATA_DFLAG_CFG_MASK = (1 << 12) - 1,
Tejun Heo949b38a2006-04-02 18:51:52 +0900142
Kristen Carlson Accardi25571642007-09-11 11:41:59 -0700143 ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */
144 ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */
Tejun Heo054a5fb2007-10-25 18:30:36 +0900145 ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */
Tejun Heo00115e02007-11-27 19:28:58 +0900146 ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200147 ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */
Tejun Heo445d2112010-04-05 10:33:13 +0900148 ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */
Tejun Heof20ded32007-11-27 19:28:52 +0900149 ATA_DFLAG_INIT_MASK = (1 << 24) - 1,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150
Tejun Heof20ded32007-11-27 19:28:52 +0900151 ATA_DFLAG_DETACH = (1 << 24),
152 ATA_DFLAG_DETACHED = (1 << 25),
Tejun Heoabdda732006-05-31 18:27:29 +0900153
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154 ATA_DEV_UNKNOWN = 0, /* unknown device */
155 ATA_DEV_ATA = 1, /* ATA device */
156 ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */
157 ATA_DEV_ATAPI = 3, /* ATAPI device */
158 ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */
Tejun Heoe0a71752007-09-23 13:14:12 +0900159 ATA_DEV_PMP = 5, /* SATA port multiplier */
160 ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */
161 ATA_DEV_SEMB = 7, /* SEMB */
162 ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */
163 ATA_DEV_NONE = 9, /* no device */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164
Tejun Heo0c887582007-08-06 18:36:23 +0900165 /* struct ata_link flags */
Tejun Heo05944bd2008-08-13 20:19:09 +0900166 ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */
Tejun Heoae791c02007-09-23 13:14:12 +0900167 ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */
168 ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */
169 ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */
170 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB,
Tejun Heofd995f72007-09-23 13:14:12 +0900171 ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */
Tejun Heof9df58c2007-09-23 13:14:13 +0900172 ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */
Kristen Carlson Accardi18f7ba42008-06-03 10:33:55 -0700173 ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */
Tejun Heo6b7ae952010-09-01 17:50:06 +0200174 ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */
Tejun Heo0c887582007-08-06 18:36:23 +0900175
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176 /* struct ata_port flags */
Tejun Heo949b38a2006-04-02 18:51:52 +0900177 ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178 /* (doesn't imply presence) */
Tejun Heo949b38a2006-04-02 18:51:52 +0900179 ATA_FLAG_SATA = (1 << 1),
Tejun Heo949b38a2006-04-02 18:51:52 +0900180 ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */
181 ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */
182 ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */
Tejun Heo7395acb2006-05-31 18:27:25 +0900183 ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD
184 * doesn't handle PIO interrupts */
185 ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */
Rafael J. Wysocki2a6e58d2009-01-19 20:56:43 +0100186 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */
187 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */
Tejun Heo7395acb2006-05-31 18:27:25 +0900188 ATA_FLAG_DEBUGMSG = (1 << 13),
Shaohua Li388539f2009-07-27 09:24:35 +0800189 ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */
Tejun Heob2a8bbe2007-01-25 19:40:05 +0900190 ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */
Alan Coxf834e492007-02-07 13:46:00 -0800191 ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */
Tejun Heo3cadbcc2007-05-15 03:28:15 +0900192 ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */
Kristen Carlson Accardi9f45cbd2007-08-15 03:57:11 -0400193 ATA_FLAG_AN = (1 << 18), /* controller supports AN */
Tejun Heoe0a71752007-09-23 13:14:12 +0900194 ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */
Kristen Carlson Accardi18f7ba42008-06-03 10:33:55 -0700195 ATA_FLAG_EM = (1 << 21), /* driver supports enclosure
196 * management */
197 ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity
198 * led */
Tejun Heoae01b242011-03-16 11:14:55 +0100199 ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */
Jens Axboe9b847542006-01-06 09:28:07 +0100200
Tejun Heob51e9e52006-06-29 01:29:30 +0900201 /* bits 24:31 of ap->flags are reserved for LLD specific flags */
Alan Cox8d238e02006-01-17 20:50:31 +0000202
Alan Coxe3cf95d2009-04-09 17:31:17 +0100203
Tejun Heob51e9e52006-06-29 01:29:30 +0900204 /* struct ata_port pflags */
205 ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */
206 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */
207 ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */
208 ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */
209 ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */
Tejun Heob51e9e52006-06-29 01:29:30 +0900210 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */
Tejun Heof4d6d002007-05-01 11:50:15 +0200211 ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */
Tejun Heoafaa5c32007-10-09 15:06:10 +0900212 ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */
Tejun Heoece180d2008-11-03 20:04:37 +0900213 ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */
214 ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */
Tejun Heob51e9e52006-06-29 01:29:30 +0900215
Tejun Heob51e9e52006-06-29 01:29:30 +0900216 ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */
Tejun Heo500530f2006-07-03 16:07:27 +0900217 ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */
Tejun Heoc05e6ff2007-12-15 15:05:02 +0900218 ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */
Tejun Heodde44582006-02-02 00:56:10 +0900219
Alan Coxe3cf95d2009-04-09 17:31:17 +0100220 ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */
221 ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */
222
Tejun Heo949b38a2006-04-02 18:51:52 +0900223 /* struct ata_queued_cmd flags */
224 ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */
Tejun Heo001102d2007-12-05 16:43:09 +0900225 ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */
Tejun Heo27197362006-04-02 18:51:53 +0900226 ATA_QCFLAG_IO = (1 << 3), /* standard IO command */
Tejun Heoe61e0672006-05-15 20:57:40 +0900227 ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */
Tejun Heoda917d62007-09-23 13:14:12 +0900228 ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */
Tejun Heoe027bd32007-10-26 16:19:26 +0900229 ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */
Tejun Heo03faab72008-03-27 19:14:24 +0900230 ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */
Tejun Heoe61e0672006-05-15 20:57:40 +0900231
Tejun Heo9ec957f2006-05-15 20:57:58 +0900232 ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */
233 ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */
234 ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235
Alan Cox4e5ec5d2006-03-27 18:42:40 +0100236 /* host set flags */
Jeff Garzikcca39742006-08-24 03:19:22 -0400237 ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */
Tejun Heoecef7252007-04-17 23:44:06 +0900238 ATA_HOST_STARTED = (1 << 1), /* Host started */
Arjan van de Ven886ad092009-01-09 15:54:07 -0800239 ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */
Jeff Garzik9bec2e32006-08-31 00:02:15 -0400240
Tejun Heob8b275e2007-07-10 15:55:43 +0900241 /* bits 24:31 of host->flags are reserved for LLD specific flags */
242
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243 /* various lengths of time */
Tejun Heo341c2c92008-05-20 02:17:51 +0900244 ATA_TMOUT_BOOT = 30000, /* heuristic */
245 ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */
Tejun Heo341c2c92008-05-20 02:17:51 +0900246 ATA_TMOUT_INTERNAL_QUICK = 5000,
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200247 ATA_TMOUT_MAX_PARK = 30000,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248
Tejun Heob48d58f2010-04-09 19:46:38 +0900249 /*
250 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s
251 * is too much without parallel probing. Use 2s if parallel
252 * probing is available, 800ms otherwise.
Tejun Heo88ff6ea2007-10-16 14:21:24 -0700253 */
Tejun Heob48d58f2010-04-09 19:46:38 +0900254 ATA_TMOUT_FF_WAIT_LONG = 2000,
255 ATA_TMOUT_FF_WAIT = 800,
Tejun Heo88ff6ea2007-10-16 14:21:24 -0700256
Tejun Heo705e76b2008-04-07 22:47:19 +0900257 /* Spec mandates to wait for ">= 2ms" before checking status
258 * after reset. We wait 150ms, because that was the magic
259 * delay used for ATAPI devices in Hale Landis's ATADRVR, for
260 * the period of time between when the ATA command register is
261 * written, and then status is checked. Because waiting for
262 * "a while" before checking status is fine, post SRST, we
263 * perform this magic delay here as well.
264 *
265 * Old drivers/ide uses the 2mS rule and then waits for ready.
266 */
Tejun Heo341c2c92008-05-20 02:17:51 +0900267 ATA_WAIT_AFTER_RESET = 150,
Tejun Heo705e76b2008-04-07 22:47:19 +0900268
Tejun Heo9dadd452008-04-07 22:47:19 +0900269 /* If PMP is supported, we have to do follow-up SRST. As some
270 * PMPs don't send D2H Reg FIS after hardreset, LLDs are
271 * advised to wait only for the following duration before
272 * doing SRST.
273 */
Stuart Hayese7d3ef12009-03-04 11:59:46 -0800274 ATA_TMOUT_PMP_SRST_WAIT = 5000,
Tejun Heo9dadd452008-04-07 22:47:19 +0900275
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276 /* ATA bus states */
277 BUS_UNKNOWN = 0,
278 BUS_DMA = 1,
279 BUS_IDLE = 2,
280 BUS_NOINTR = 3,
281 BUS_NODATA = 4,
282 BUS_TIMER = 5,
283 BUS_PIO = 6,
284 BUS_EDD = 7,
285 BUS_IDENTIFY = 8,
286 BUS_PACKET = 9,
287
288 /* SATA port states */
289 PORT_UNKNOWN = 0,
290 PORT_ENABLED = 1,
291 PORT_DISABLED = 2,
292
293 /* encoding various smaller bitmaps into a single
Tejun Heo7dc951a2007-11-27 19:43:42 +0900294 * unsigned long bitmap
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295 */
Tejun Heo70cd0712007-11-27 19:43:40 +0900296 ATA_NR_PIO_MODES = 7,
297 ATA_NR_MWDMA_MODES = 5,
298 ATA_NR_UDMA_MODES = 8,
Tejun Heo1da7b0d2006-03-06 04:31:56 +0900299
300 ATA_SHIFT_PIO = 0,
Tejun Heo70cd0712007-11-27 19:43:40 +0900301 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES,
302 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES,
Tejun Heo1da7b0d2006-03-06 04:31:56 +0900303
Jeff Garzikcedc9a42005-10-05 07:13:30 -0400304 /* size of buffer to pad xfers ending on unaligned boundaries */
305 ATA_DMA_PAD_SZ = 4,
Tejun Heo949b38a2006-04-02 18:51:52 +0900306
Tejun Heo0c247c52006-05-15 20:58:19 +0900307 /* ering size */
308 ATA_ERING_SIZE = 32,
309
Tejun Heo31cc23b2007-09-23 13:14:12 +0900310 /* return values for ->qc_defer */
311 ATA_DEFER_LINK = 1,
312 ATA_DEFER_PORT = 2,
313
Tejun Heof3e81b12006-05-15 20:58:21 +0900314 /* desc_len for ata_eh_info and context */
315 ATA_EH_DESC_LEN = 80,
316
Tejun Heo9be1e972006-05-15 20:58:17 +0900317 /* reset / recovery action types */
318 ATA_EH_REVALIDATE = (1 << 0),
Tejun Heocf480622008-01-24 00:05:14 +0900319 ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */
320 ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */
321 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
Tejun Heof9df58c2007-09-23 13:14:13 +0900322 ATA_EH_ENABLE_LINK = (1 << 3),
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200323 ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */
Tejun Heo9be1e972006-05-15 20:58:17 +0900324
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200325 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK,
Tejun Heob5b3fa32008-07-31 17:02:42 +0900326 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET |
Tejun Heo6b7ae952010-09-01 17:50:06 +0200327 ATA_EH_ENABLE_LINK,
Tejun Heo9be1e972006-05-15 20:58:17 +0900328
Tejun Heof3e81b12006-05-15 20:58:21 +0900329 /* ata_eh_info->flags */
Tejun Heoabdda732006-05-31 18:27:29 +0900330 ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */
Tejun Heo1cdaf532006-07-03 16:07:26 +0900331 ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */
332 ATA_EHI_QUIET = (1 << 3), /* be quiet */
Tejun Heoe2f3d752010-09-07 14:05:31 +0200333 ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */
Tejun Heoabdda732006-05-31 18:27:29 +0900334
Tejun Heo0d64a232007-04-23 02:41:05 +0900335 ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */
336 ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */
337 ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */
338 ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */
Andrea Gelmini89692c02010-10-16 15:19:18 +0200339 ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */
Tejun Heof3e81b12006-05-15 20:58:21 +0900340
Tejun Heo0d64a232007-04-23 02:41:05 +0900341 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
Tejun Heo13abf502006-07-10 23:18:46 +0900342
Tejun Heo848e4c62008-10-21 14:26:39 +0900343 /* mask of flags to transfer *to* the slave link */
344 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET,
345
Tejun Heoa1e10f72007-08-18 13:28:49 +0900346 /* max tries if error condition is still set after ->error_handler */
347 ATA_EH_MAX_TRIES = 5,
Tejun Heoad9e2762006-05-15 20:58:12 +0900348
Tejun Heo5040ab62010-01-11 11:14:44 +0900349 /* sometimes resuming a link requires several retries */
350 ATA_LINK_RESUME_TRIES = 5,
351
Tejun Heo14d2bac2006-04-02 17:54:46 +0900352 /* how hard are we gonna try to probe/recover devices */
353 ATA_PROBE_MAX_TRIES = 3,
Tejun Heo022bdb02006-05-15 20:58:22 +0900354 ATA_EH_DEV_TRIES = 3,
Tejun Heoe0a71752007-09-23 13:14:12 +0900355 ATA_EH_PMP_TRIES = 5,
356 ATA_EH_PMP_LINK_TRIES = 3,
357
Tejun Heobf1bff62008-05-19 01:15:10 +0900358 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */
Tejun Heof5914a42006-05-31 18:27:48 +0900359
Tejun Heo87fbc5a2008-05-20 02:17:54 +0900360 /* This should match the actual table size of
361 * ata_eh_cmd_timeout_table in libata-eh.c.
362 */
Tejun Heo6013efd2009-11-19 15:36:45 +0900363 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6,
Tejun Heo87fbc5a2008-05-20 02:17:54 +0900364
Alan Cox93590852006-09-12 16:55:12 +0100365 /* Horkage types. May be set by libata or controller on drives
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300366 (some horkage may be drive/controller pair dependent */
Alan Cox93590852006-09-12 16:55:12 +0100367
368 ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */
Alan Cox6919a0a2006-10-27 19:08:46 -0700369 ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */
370 ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */
Albert Lee18d6e9d2007-04-02 11:34:15 +0800371 ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */
Tejun Heo16c55b02007-08-29 11:58:33 +0900372 ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */
Tejun Heo50af2fa2008-05-19 01:15:14 +0900373 ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */
Alan Cox93328e12007-09-29 04:06:48 -0400374 ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */
Alan Cox6bbfd532007-11-05 22:58:58 +0000375 ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */
Albert Lee2d3b8ee2007-11-15 10:35:46 +0900376 ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */
Jens Axboe9ce8e302008-08-27 15:23:18 +0200377 ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */
Tejun Heo6a87e422008-11-03 19:01:09 +0900378 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands
379 not multiple of 16 bytes */
Nick Andrew877d0312009-01-26 11:06:57 +0100380 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */
Tejun Heo90627122009-01-29 20:31:36 +0900381 ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */
Tejun Heod0cb43b2009-07-09 09:27:50 +0900382 ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */
Shaohua Li388539f2009-07-27 09:24:35 +0800383 ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */
Tejun Heo43c9c592010-05-23 12:59:11 +0200384 ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */
Alan Coxb3a70602007-10-02 12:38:26 -0400385
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400386 /* DMA mask for user DMA control: User visible values; DO NOT
Alan Coxb3a70602007-10-02 12:38:26 -0400387 renumber */
388 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */
389 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */
390 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */
Tejun Heoceb0c642007-12-05 16:43:06 +0900391
392 /* ATAPI command types */
393 ATAPI_READ = 0, /* READs */
394 ATAPI_WRITE = 1, /* WRITEs */
395 ATAPI_READ_CD = 2, /* READ CD [MSF] */
Tejun Heoe52dcc42008-04-02 17:35:19 +0900396 ATAPI_PASS_THRU = 3, /* SAT pass-thru */
397 ATAPI_MISC = 4, /* the rest */
Tejun Heo624d5c52008-03-25 22:16:41 +0900398
399 /* Timing constants */
400 ATA_TIMING_SETUP = (1 << 0),
401 ATA_TIMING_ACT8B = (1 << 1),
402 ATA_TIMING_REC8B = (1 << 2),
403 ATA_TIMING_CYC8B = (1 << 3),
404 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
405 ATA_TIMING_CYC8B,
406 ATA_TIMING_ACTIVE = (1 << 4),
407 ATA_TIMING_RECOVER = (1 << 5),
David Daney3ada9c12009-01-15 17:45:31 -0800408 ATA_TIMING_DMACK_HOLD = (1 << 6),
409 ATA_TIMING_CYCLE = (1 << 7),
410 ATA_TIMING_UDMA = (1 << 8),
Tejun Heo624d5c52008-03-25 22:16:41 +0900411 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
412 ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
413 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
David Daney3ada9c12009-01-15 17:45:31 -0800414 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE |
415 ATA_TIMING_UDMA,
Tejun Heof1bce7f2009-09-16 04:16:04 +0900416
417 /* ACPI constants */
418 ATA_ACPI_FILTER_SETXFER = 1 << 0,
419 ATA_ACPI_FILTER_LOCK = 1 << 1,
420 ATA_ACPI_FILTER_DIPM = 1 << 2,
Tejun Heofa5b5612009-09-16 04:17:02 +0900421 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */
422 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */
Tejun Heof1bce7f2009-09-16 04:16:04 +0900423
424 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER |
425 ATA_ACPI_FILTER_LOCK |
426 ATA_ACPI_FILTER_DIPM,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427};
428
Tejun Heo7dc951a2007-11-27 19:43:42 +0900429enum ata_xfer_mask {
430 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1)
431 << ATA_SHIFT_PIO,
432 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1)
433 << ATA_SHIFT_MWDMA,
434 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1)
435 << ATA_SHIFT_UDMA,
436};
437
Albert Lee14be71f2005-09-27 17:36:35 +0800438enum hsm_task_states {
Albert Leec56b14d2005-09-30 19:07:39 +0800439 HSM_ST_IDLE, /* no command on going */
Albert Lee71527642007-04-02 11:28:52 +0800440 HSM_ST_FIRST, /* (waiting the device to)
441 write CDB or first data block */
Albert Leec56b14d2005-09-30 19:07:39 +0800442 HSM_ST, /* (waiting the device to) transfer data */
443 HSM_ST_LAST, /* (waiting the device to) complete command */
Albert Leec56b14d2005-09-30 19:07:39 +0800444 HSM_ST_ERR, /* error */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445};
446
Jeff Garzika7dac442005-10-30 04:44:42 -0500447enum ata_completion_errors {
Tejun Heo11a56d22006-01-23 13:09:36 +0900448 AC_ERR_DEV = (1 << 0), /* device reported error */
449 AC_ERR_HSM = (1 << 1), /* host state machine violation */
450 AC_ERR_TIMEOUT = (1 << 2), /* timeout */
451 AC_ERR_MEDIA = (1 << 3), /* media error */
452 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */
453 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */
454 AC_ERR_SYSTEM = (1 << 6), /* system error */
455 AC_ERR_INVALID = (1 << 7), /* invalid argument */
456 AC_ERR_OTHER = (1 << 8), /* unknown */
Tejun Heo55a8e2c2006-11-10 18:08:10 +0900457 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */
Tejun Heo5335b722007-07-16 14:29:40 +0900458 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */
Jeff Garzika7dac442005-10-30 04:44:42 -0500459};
460
Tejun Heoc93b2632010-09-01 17:50:04 +0200461/*
462 * Link power management policy: If you alter this, you also need to
463 * alter libata-scsi.c (for the ascii descriptions)
464 */
465enum ata_lpm_policy {
466 ATA_LPM_UNKNOWN,
467 ATA_LPM_MAX_POWER,
468 ATA_LPM_MED_POWER,
469 ATA_LPM_MIN_POWER,
470};
471
Tejun Heo6b7ae952010-09-01 17:50:06 +0200472enum ata_lpm_hints {
473 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */
474 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */
475};
476
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477/* forward declarations */
478struct scsi_device;
479struct ata_port_operations;
480struct ata_port;
Tejun Heocc0680a2007-08-06 18:36:23 +0900481struct ata_link;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482struct ata_queued_cmd;
483
484/* typedefs */
Tejun Heo77853bf2006-01-23 13:09:36 +0900485typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
Tejun Heocc0680a2007-08-06 18:36:23 +0900486typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
487typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
Tejun Heod4b2bab2007-02-02 16:50:52 +0900488 unsigned long deadline);
Tejun Heocc0680a2007-08-06 18:36:23 +0900489typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490
Tony Jonesee959b02008-02-22 00:13:36 +0100491extern struct device_attribute dev_attr_link_power_management_policy;
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200492extern struct device_attribute dev_attr_unload_heads;
Kristen Carlson Accardi18f7ba42008-06-03 10:33:55 -0700493extern struct device_attribute dev_attr_em_message_type;
494extern struct device_attribute dev_attr_em_message;
495extern struct device_attribute dev_attr_sw_activity;
496
497enum sw_activity {
498 OFF,
499 BLINK_ON,
500 BLINK_OFF,
501};
Kristen Carlson Accardica773292007-10-25 00:58:59 -0400502
Tejun Heo127102a2008-04-07 22:47:21 +0900503#ifdef CONFIG_ATA_SFF
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504struct ata_ioports {
Tejun Heo0d5ff562007-02-01 15:06:36 +0900505 void __iomem *cmd_addr;
506 void __iomem *data_addr;
507 void __iomem *error_addr;
508 void __iomem *feature_addr;
509 void __iomem *nsect_addr;
510 void __iomem *lbal_addr;
511 void __iomem *lbam_addr;
512 void __iomem *lbah_addr;
513 void __iomem *device_addr;
514 void __iomem *status_addr;
515 void __iomem *command_addr;
516 void __iomem *altstatus_addr;
517 void __iomem *ctl_addr;
Tejun Heo9a7780c2010-05-19 22:10:24 +0200518#ifdef CONFIG_ATA_BMDMA
Tejun Heo0d5ff562007-02-01 15:06:36 +0900519 void __iomem *bmdma_addr;
Tejun Heo9a7780c2010-05-19 22:10:24 +0200520#endif /* CONFIG_ATA_BMDMA */
Tejun Heo0d5ff562007-02-01 15:06:36 +0900521 void __iomem *scr_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700522};
Tejun Heo127102a2008-04-07 22:47:21 +0900523#endif /* CONFIG_ATA_SFF */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524
Jeff Garzikcca39742006-08-24 03:19:22 -0400525struct ata_host {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526 spinlock_t lock;
527 struct device *dev;
Tejun Heo0d5ff562007-02-01 15:06:36 +0900528 void __iomem * const *iomap;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529 unsigned int n_ports;
530 void *private_data;
Tejun Heo029cfd62008-03-25 12:22:49 +0900531 struct ata_port_operations *ops;
Alan Cox5444a6f2006-03-27 18:58:20 +0100532 unsigned long flags;
Tejun Heoc0c362b2010-09-06 17:57:14 +0200533
534 struct mutex eh_mutex;
535 struct task_struct *eh_owner;
536
Tejun Heofafbae82007-05-15 03:28:16 +0900537#ifdef CONFIG_ATA_ACPI
538 acpi_handle acpi_handle;
539#endif
Alan032af1c2007-03-01 17:36:46 +0000540 struct ata_port *simplex_claimed; /* channel owning the DMA */
Tejun Heof0eb62b2006-06-12 23:05:38 +0900541 struct ata_port *ports[0];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542};
543
544struct ata_queued_cmd {
545 struct ata_port *ap;
546 struct ata_device *dev;
547
548 struct scsi_cmnd *scsicmd;
549 void (*scsidone)(struct scsi_cmnd *);
550
551 struct ata_taskfile tf;
552 u8 cdb[ATAPI_CDB_LEN];
553
554 unsigned long flags; /* ATA_QCFLAG_xxx */
555 unsigned int tag;
556 unsigned int n_elem;
FUJITA Tomonori58256272009-02-27 17:35:43 +0900557 unsigned int orig_n_elem;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558
559 int dma_dir;
560
Mark Lord5a5dbd12007-03-16 10:22:26 -0400561 unsigned int sect_size;
Jeff Garzikcedc9a42005-10-05 07:13:30 -0400562
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563 unsigned int nbytes;
Tejun Heoaacda372008-03-18 17:47:43 +0900564 unsigned int extrabytes;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700565 unsigned int curbytes;
566
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567 struct scatterlist sgent;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568
Tejun Heoff2aeb12007-12-05 16:43:11 +0900569 struct scatterlist *sg;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570
Richard Kennedyb34e9042010-09-10 12:19:43 +0100571 struct scatterlist *cursg;
572 unsigned int cursg_ofs;
573
Albert Leea22e2eb2005-12-05 15:38:02 +0800574 unsigned int err_mask;
Tejun Heoe61e0672006-05-15 20:57:40 +0900575 struct ata_taskfile result_tf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576 ata_qc_cb_t complete_fn;
577
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578 void *private_data;
Darrick J. Wong1c50dc82007-01-30 01:18:41 -0800579 void *lldd_task;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700580};
581
Jeff Garzikcca39742006-08-24 03:19:22 -0400582struct ata_port_stats {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583 unsigned long unhandled_irq;
584 unsigned long idle_irq;
585 unsigned long rw_reqbuf;
586};
587
Tejun Heo0c247c52006-05-15 20:58:19 +0900588struct ata_ering_entry {
Tejun Heo3884f7b2007-11-27 19:28:56 +0900589 unsigned int eflags;
Tejun Heo0c247c52006-05-15 20:58:19 +0900590 unsigned int err_mask;
591 u64 timestamp;
592};
593
594struct ata_ering {
595 int cursor;
596 struct ata_ering_entry ring[ATA_ERING_SIZE];
597};
598
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599struct ata_device {
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900600 struct ata_link *link;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601 unsigned int devno; /* 0 or 1 */
Tejun Heo75683fe2007-07-05 13:31:27 +0900602 unsigned int horkage; /* List of broken features */
Richard Kennedy6866e7b2008-09-22 14:47:13 -0700603 unsigned long flags; /* ATA_DFLAG_xxx */
Tejun Heo3edebac2006-05-31 18:27:40 +0900604 struct scsi_device *sdev; /* attached SCSI device */
Bartlomiej Zolnierkiewicz95514fd2009-11-25 18:12:48 +0100605 void *private_data;
Tejun Heofafbae82007-05-15 03:28:16 +0900606#ifdef CONFIG_ATA_ACPI
607 acpi_handle acpi_handle;
Tejun Heo398e0782007-12-15 15:05:03 +0900608 union acpi_object *gtf_cache;
Tejun Heo110f66d2009-09-16 04:17:28 +0900609 unsigned int gtf_filter;
Tejun Heofafbae82007-05-15 03:28:16 +0900610#endif
Gwendal Grignoud9027472010-05-25 12:31:38 -0700611 struct device tdev;
Tejun Heo99cf6102009-01-29 20:31:32 +0900612 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */
Tejun Heo72fa4b72006-05-31 18:27:32 +0900613 u64 n_sectors; /* size of device, if ATA */
Tejun Heo5920dad2009-07-15 17:11:41 +0900614 u64 n_native_sectors; /* native size, if ATA */
Tejun Heo72fa4b72006-05-31 18:27:32 +0900615 unsigned int class; /* ATA_DEV_xxx */
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200616 unsigned long unpark_deadline;
Tejun Heoe0a71752007-09-23 13:14:12 +0900617
Linus Torvalds1da177e2005-04-16 15:20:36 -0700618 u8 pio_mode;
619 u8 dma_mode;
620 u8 xfer_mode;
621 unsigned int xfer_shift; /* ATA_SHIFT_xxx */
622
Albert Lee8cbd6df2005-10-12 15:06:27 +0800623 unsigned int multi_count; /* sectors count for
624 READ/WRITE MULTIPLE */
Tejun Heob00eec12006-02-12 23:32:59 +0900625 unsigned int max_sectors; /* per-device max sectors */
Tejun Heo6e7846e2006-02-12 23:32:58 +0900626 unsigned int cdb_len;
Albert Lee8bf62ec2005-05-12 15:29:42 -0400627
Tejun Heoacf356b2006-03-24 14:07:50 +0900628 /* per-dev xfer mask */
Tejun Heo7dc951a2007-11-27 19:43:42 +0900629 unsigned long pio_mask;
630 unsigned long mwdma_mask;
631 unsigned long udma_mask;
Tejun Heoacf356b2006-03-24 14:07:50 +0900632
Albert Lee8bf62ec2005-05-12 15:29:42 -0400633 /* for CHS addressing */
634 u16 cylinders; /* Number of cylinders */
635 u16 heads; /* Number of heads */
636 u16 sectors; /* Number of sectors per track */
Tejun Heo0c247c52006-05-15 20:58:19 +0900637
Jeff Garzikf7e98932008-04-29 17:47:34 -0400638 union {
639 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
640 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
641 };
Tejun Heo99cf6102009-01-29 20:31:32 +0900642
643 /* error history */
644 int spdn_cnt;
645 /* ering is CLEAR_END, read comment above CLEAR_END */
646 struct ata_ering ering;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700647};
648
Tejun Heo99cf6102009-01-29 20:31:32 +0900649/* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are
650 * cleared to zero on ata_dev_init().
Tejun Heo72fa4b72006-05-31 18:27:32 +0900651 */
Tejun Heo99cf6102009-01-29 20:31:32 +0900652#define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
653#define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
Tejun Heo72fa4b72006-05-31 18:27:32 +0900654
Tejun Heof3e81b12006-05-15 20:58:21 +0900655struct ata_eh_info {
656 struct ata_device *dev; /* offending device */
657 u32 serror; /* SError from LLDD */
658 unsigned int err_mask; /* port-wide err_mask */
659 unsigned int action; /* ATA_EH_* action mask */
Tejun Heo47005f22006-06-19 18:27:23 +0900660 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */
Tejun Heof3e81b12006-05-15 20:58:21 +0900661 unsigned int flags; /* ATA_EHI_* flags */
Tejun Heoabdda732006-05-31 18:27:29 +0900662
Tejun Heoabdda732006-05-31 18:27:29 +0900663 unsigned int probe_mask;
664
Tejun Heof3e81b12006-05-15 20:58:21 +0900665 char desc[ATA_EH_DESC_LEN];
666 int desc_len;
667};
668
669struct ata_eh_context {
670 struct ata_eh_info i;
671 int tries[ATA_MAX_DEVICES];
Tejun Heo87fbc5a2008-05-20 02:17:54 +0900672 int cmd_timeout_idx[ATA_MAX_DEVICES]
673 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE];
Tejun Heoabdda732006-05-31 18:27:29 +0900674 unsigned int classes[ATA_MAX_DEVICES];
675 unsigned int did_probe_mask;
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200676 unsigned int unloaded_mask;
Tejun Heo00115e02007-11-27 19:28:58 +0900677 unsigned int saved_ncq_enabled;
678 u8 saved_xfer_mode[ATA_MAX_DEVICES];
Tejun Heo0a2c0f52008-05-20 02:17:52 +0900679 /* timestamp for the last reset attempt or success */
680 unsigned long last_reset;
Tejun Heof3e81b12006-05-15 20:58:21 +0900681};
682
Tejun Heo64578a32007-05-15 03:28:16 +0900683struct ata_acpi_drive
684{
685 u32 pio;
686 u32 dma;
687} __packed;
688
689struct ata_acpi_gtm {
690 struct ata_acpi_drive drive[2];
691 u32 flags;
692} __packed;
693
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900694struct ata_link {
695 struct ata_port *ap;
Tejun Heo89898052007-08-06 18:36:23 +0900696 int pmp; /* port multiplier port # */
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900697
Gwendal Grignoud9027472010-05-25 12:31:38 -0700698 struct device tdev;
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900699 unsigned int active_tag; /* active tag on this link */
700 u32 sactive; /* active NCQ commands */
701
Tejun Heo0c887582007-08-06 18:36:23 +0900702 unsigned int flags; /* ATA_LFLAG_xxx */
703
Tejun Heod127ea72008-07-31 16:09:34 +0900704 u32 saved_scontrol; /* SControl on probe */
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900705 unsigned int hw_sata_spd_limit;
706 unsigned int sata_spd_limit;
707 unsigned int sata_spd; /* current SATA PHY speed */
Tejun Heo6b7ae952010-09-01 17:50:06 +0200708 enum ata_lpm_policy lpm_policy;
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900709
710 /* record runtime error info, protected by host_set lock */
711 struct ata_eh_info eh_info;
712 /* EH context */
713 struct ata_eh_context eh_context;
714
715 struct ata_device device[ATA_MAX_DEVICES];
716};
Gwendal Grignoud9027472010-05-25 12:31:38 -0700717#define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
718#define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900719
Linus Torvalds1da177e2005-04-16 15:20:36 -0700720struct ata_port {
Jeff Garzikcca39742006-08-24 03:19:22 -0400721 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */
Tejun Heo029cfd62008-03-25 12:22:49 +0900722 struct ata_port_operations *ops;
Jeff Garzikba6a1302006-06-22 23:46:10 -0400723 spinlock_t *lock;
Alan Coxe3cf95d2009-04-09 17:31:17 +0100724 /* Flags owned by the EH context. Only EH should touch these once the
725 port is active */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726 unsigned long flags; /* ATA_FLAG_xxx */
Alan Coxe3cf95d2009-04-09 17:31:17 +0100727 /* Flags that change dynamically, protected by ap->lock */
Tejun Heob51e9e52006-06-29 01:29:30 +0900728 unsigned int pflags; /* ATA_PFLAG_xxx */
Tejun Heo44877b42007-02-21 01:06:51 +0900729 unsigned int print_id; /* user visible unique port ID */
730 unsigned int port_no; /* 0 based port no. inside the host */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700731
Tejun Heo127102a2008-04-07 22:47:21 +0900732#ifdef CONFIG_ATA_SFF
Linus Torvalds1da177e2005-04-16 15:20:36 -0700733 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700734 u8 ctl; /* cache of ATA control register */
735 u8 last_ctl; /* Cache last written value */
Gwendal Grignouea3c6452010-08-31 16:20:36 -0700736 struct ata_link* sff_pio_task_link; /* link currently used */
Tejun Heoc4291372010-05-10 21:41:38 +0200737 struct delayed_work sff_pio_task;
Tejun Heo9a7780c2010-05-19 22:10:24 +0200738#ifdef CONFIG_ATA_BMDMA
Tejun Heof60d7012010-05-10 21:41:41 +0200739 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */
740 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */
Tejun Heo9a7780c2010-05-19 22:10:24 +0200741#endif /* CONFIG_ATA_BMDMA */
Tejun Heo5fe74542010-05-10 21:41:37 +0200742#endif /* CONFIG_ATA_SFF */
743
Linus Torvalds1da177e2005-04-16 15:20:36 -0700744 unsigned int pio_mask;
745 unsigned int mwdma_mask;
746 unsigned int udma_mask;
747 unsigned int cbl; /* cable type; ATA_CBL_xxx */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700748
749 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE];
Tejun Heo8a8bc222008-11-10 14:48:21 +0900750 unsigned long qc_allocated;
Tejun Heodedaf2b2006-05-15 21:03:43 +0900751 unsigned int qc_active;
Tejun Heoda917d62007-09-23 13:14:12 +0900752 int nr_active_links; /* #links with active qcs */
Tejun Heodedaf2b2006-05-15 21:03:43 +0900753
Tejun Heob1c72912008-07-31 17:02:43 +0900754 struct ata_link link; /* host default link */
755 struct ata_link *slave_link; /* see ata_slave_link_init() */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700756
Tejun Heo89898052007-08-06 18:36:23 +0900757 int nr_pmp_links; /* nr of available PMP links */
758 struct ata_link *pmp_link; /* array of PMP links */
Tejun Heoda917d62007-09-23 13:14:12 +0900759 struct ata_link *excl_link; /* for PMP qc exclusion */
Tejun Heo89898052007-08-06 18:36:23 +0900760
Jeff Garzikcca39742006-08-24 03:19:22 -0400761 struct ata_port_stats stats;
762 struct ata_host *host;
Brian King2f1f6102006-03-23 17:30:15 -0600763 struct device *dev;
Gwendal Grignoud9027472010-05-25 12:31:38 -0700764 struct device tdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700765
Tejun Heoad72cf92010-07-02 10:03:52 +0200766 struct mutex scsi_scan_mutex;
David Howells52bad642006-11-22 14:54:01 +0000767 struct delayed_work hotplug_task;
Jeff Garzik3b01b8a2006-06-12 00:22:04 -0400768 struct work_struct scsi_rescan_task;
Tejun Heo86e45b62006-03-05 15:29:09 +0900769
Albert Lee14be71f2005-09-27 17:36:35 +0800770 unsigned int hsm_task_state;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700771
Randy Dunlapbfd60572006-01-17 19:34:42 -0500772 u32 msg_enable;
Tejun Heoa72ec4c2006-01-23 13:09:37 +0900773 struct list_head eh_done_q;
Tejun Heoc6cf9e92006-05-31 18:27:27 +0900774 wait_queue_head_t eh_wait_q;
Tejun Heoa1e10f72007-08-18 13:28:49 +0900775 int eh_tries;
Elias Oltmanns45fabbb2008-09-21 11:54:08 +0200776 struct completion park_req_pending;
Randy Dunlapbfd60572006-01-17 19:34:42 -0500777
Tejun Heo500530f2006-07-03 16:07:27 +0900778 pm_message_t pm_mesg;
779 int *pm_result;
Tejun Heo6b7ae952010-09-01 17:50:06 +0200780 enum ata_lpm_policy target_lpm_policy;
Tejun Heo500530f2006-07-03 16:07:27 +0900781
Tejun Heo5ddf24c2007-07-16 14:29:41 +0900782 struct timer_list fastdrain_timer;
783 unsigned long fastdrain_cnt;
784
Kristen Carlson Accardi18f7ba42008-06-03 10:33:55 -0700785 int em_message_type;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700786 void *private_data;
Tejun Heofe635c72006-05-15 20:57:35 +0900787
Tejun Heofafbae82007-05-15 03:28:16 +0900788#ifdef CONFIG_ATA_ACPI
789 acpi_handle acpi_handle;
Tejun Heoc05e6ff2007-12-15 15:05:02 +0900790 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */
Tejun Heofafbae82007-05-15 03:28:16 +0900791#endif
Tejun Heo84bda122009-03-02 18:53:26 +0900792 /* owned by EH */
793 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700794};
795
Tejun Heo029cfd62008-03-25 12:22:49 +0900796/* The following initializer overrides a method to NULL whether one of
797 * its parent has the method defined or not. This is equivalent to
798 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant
799 * expression and thus can't be used as an initializer.
800 */
801#define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
802
Linus Torvalds1da177e2005-04-16 15:20:36 -0700803struct ata_port_operations {
Tejun Heoc1bc8992008-03-25 12:22:47 +0900804 /*
805 * Command execution
806 */
807 int (*qc_defer)(struct ata_queued_cmd *qc);
808 int (*check_atapi_dma)(struct ata_queued_cmd *qc);
809 void (*qc_prep)(struct ata_queued_cmd *qc);
810 unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
Tejun Heo22183bf2008-04-07 22:47:20 +0900811 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700812
Tejun Heoc1bc8992008-03-25 12:22:47 +0900813 /*
814 * Configuration and exception handling
815 */
816 int (*cable_detect)(struct ata_port *ap);
817 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask);
818 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
819 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
820 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
Alan Cox963e4972008-07-24 17:16:06 +0100821 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700822
Tejun Heoc1bc8992008-03-25 12:22:47 +0900823 void (*dev_config)(struct ata_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700824
Tejun Heoc1bc8992008-03-25 12:22:47 +0900825 void (*freeze)(struct ata_port *ap);
826 void (*thaw)(struct ata_port *ap);
Tejun Heoa1efdab2008-03-25 12:22:50 +0900827 ata_prereset_fn_t prereset;
828 ata_reset_fn_t softreset;
829 ata_reset_fn_t hardreset;
830 ata_postreset_fn_t postreset;
831 ata_prereset_fn_t pmp_prereset;
832 ata_reset_fn_t pmp_softreset;
833 ata_reset_fn_t pmp_hardreset;
834 ata_postreset_fn_t pmp_postreset;
Tejun Heoc1bc8992008-03-25 12:22:47 +0900835 void (*error_handler)(struct ata_port *ap);
Alan Coxc96f1732009-03-24 10:23:46 +0000836 void (*lost_interrupt)(struct ata_port *ap);
Tejun Heoc1bc8992008-03-25 12:22:47 +0900837 void (*post_internal_cmd)(struct ata_queued_cmd *qc);
838
839 /*
840 * Optional features
841 */
Tejun Heo82ef04f2008-07-31 17:02:40 +0900842 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val);
843 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val);
Tejun Heoc1bc8992008-03-25 12:22:47 +0900844 void (*pmp_attach)(struct ata_port *ap);
845 void (*pmp_detach)(struct ata_port *ap);
Tejun Heo6b7ae952010-09-01 17:50:06 +0200846 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy,
847 unsigned hints);
Tejun Heoc1bc8992008-03-25 12:22:47 +0900848
849 /*
850 * Start, stop, suspend and resume
851 */
852 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg);
853 int (*port_resume)(struct ata_port *ap);
854 int (*port_start)(struct ata_port *ap);
855 void (*port_stop)(struct ata_port *ap);
856 void (*host_stop)(struct ata_host *host);
857
Tejun Heo127102a2008-04-07 22:47:21 +0900858#ifdef CONFIG_ATA_SFF
Tejun Heoc1bc8992008-03-25 12:22:47 +0900859 /*
860 * SFF / taskfile oriented ops
861 */
Tejun Heo5682ed32008-04-07 22:47:16 +0900862 void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
Sergei Shtylyov41dec292010-05-07 22:47:50 +0400863 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl);
Tejun Heo5682ed32008-04-07 22:47:16 +0900864 u8 (*sff_check_status)(struct ata_port *ap);
865 u8 (*sff_check_altstatus)(struct ata_port *ap);
866 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
867 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
868 void (*sff_exec_command)(struct ata_port *ap,
869 const struct ata_taskfile *tf);
870 unsigned int (*sff_data_xfer)(struct ata_device *dev,
871 unsigned char *buf, unsigned int buflen, int rw);
Sergei Shtylyove42a5422010-05-07 22:49:02 +0400872 void (*sff_irq_on)(struct ata_port *);
Tejun Heo27943622010-01-19 10:49:19 +0900873 bool (*sff_irq_check)(struct ata_port *);
Tejun Heo5682ed32008-04-07 22:47:16 +0900874 void (*sff_irq_clear)(struct ata_port *);
Tejun Heo8244cd02010-05-10 21:41:36 +0200875 void (*sff_drain_fifo)(struct ata_queued_cmd *qc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700876
Tejun Heo9a7780c2010-05-19 22:10:24 +0200877#ifdef CONFIG_ATA_BMDMA
Tejun Heoc1bc8992008-03-25 12:22:47 +0900878 void (*bmdma_setup)(struct ata_queued_cmd *qc);
879 void (*bmdma_start)(struct ata_queued_cmd *qc);
880 void (*bmdma_stop)(struct ata_queued_cmd *qc);
881 u8 (*bmdma_status)(struct ata_port *ap);
Tejun Heo9a7780c2010-05-19 22:10:24 +0200882#endif /* CONFIG_ATA_BMDMA */
Tejun Heo127102a2008-04-07 22:47:21 +0900883#endif /* CONFIG_ATA_SFF */
Tejun Heoc19ba8a2006-01-24 17:05:22 +0900884
Kristen Carlson Accardi18f7ba42008-06-03 10:33:55 -0700885 ssize_t (*em_show)(struct ata_port *ap, char *buf);
886 ssize_t (*em_store)(struct ata_port *ap, const char *message,
887 size_t size);
888 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf);
889 ssize_t (*sw_activity_store)(struct ata_device *dev,
890 enum sw_activity val);
Tejun Heoc1bc8992008-03-25 12:22:47 +0900891 /*
892 * Obsolete
Tejun Heo9ec957f2006-05-15 20:57:58 +0900893 */
Tejun Heoc1bc8992008-03-25 12:22:47 +0900894 void (*phy_reset)(struct ata_port *ap);
895 void (*eng_timeout)(struct ata_port *ap);
Tejun Heo029cfd62008-03-25 12:22:49 +0900896
897 /*
898 * ->inherits must be the last field and all the preceding
899 * fields must be pointers.
900 */
901 const struct ata_port_operations *inherits;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902};
903
904struct ata_port_info {
Jeff Garzikcca39742006-08-24 03:19:22 -0400905 unsigned long flags;
Tejun Heo0c887582007-08-06 18:36:23 +0900906 unsigned long link_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700907 unsigned long pio_mask;
908 unsigned long mwdma_mask;
909 unsigned long udma_mask;
Tejun Heo029cfd62008-03-25 12:22:49 +0900910 struct ata_port_operations *port_ops;
Alan Coxe99f8b52005-11-08 14:09:44 +0000911 void *private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700912};
913
Alan Cox452503f2005-10-21 19:01:32 -0400914struct ata_timing {
915 unsigned short mode; /* ATA mode */
916 unsigned short setup; /* t1 */
917 unsigned short act8b; /* t2 for 8-bit I/O */
918 unsigned short rec8b; /* t2i for 8-bit I/O */
919 unsigned short cyc8b; /* t0 for 8-bit I/O */
920 unsigned short active; /* t2 or tD */
921 unsigned short recover; /* t2i or tK */
David Daney3ada9c12009-01-15 17:45:31 -0800922 unsigned short dmack_hold; /* tj */
Alan Cox452503f2005-10-21 19:01:32 -0400923 unsigned short cycle; /* t0 */
924 unsigned short udma; /* t2CYCTYP/2 */
925};
926
Tejun Heo624d5c52008-03-25 22:16:41 +0900927/*
928 * Core layer - drivers/ata/libata-core.c
929 */
Tejun Heoe9c83912006-07-03 16:07:26 +0900930extern const unsigned long sata_deb_timing_normal[];
931extern const unsigned long sata_deb_timing_hotplug[];
932extern const unsigned long sata_deb_timing_long[];
933
Tejun Heo029cfd62008-03-25 12:22:49 +0900934extern struct ata_port_operations ata_dummy_port_ops;
Tejun Heo21b0ad42007-04-17 23:44:07 +0900935extern const struct ata_port_info ata_dummy_port_info;
Tejun Heodd5b06c2006-08-10 16:59:12 +0900936
Tejun Heoe9c83912006-07-03 16:07:26 +0900937static inline const unsigned long *
938sata_ehc_deb_timing(struct ata_eh_context *ehc)
939{
940 if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
941 return sata_deb_timing_hotplug;
942 else
943 return sata_deb_timing_normal;
944}
Tejun Heod7bb4cc2006-05-31 18:27:46 +0900945
Tejun Heodd5b06c2006-08-10 16:59:12 +0900946static inline int ata_port_is_dummy(struct ata_port *ap)
947{
948 return ap->ops == &ata_dummy_port_ops;
949}
950
Tejun Heo936fd732007-08-06 18:36:23 +0900951extern int sata_set_spd(struct ata_link *link);
Tejun Heo0aa11132008-04-07 22:47:18 +0900952extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
Tejun Heoaa2731a2008-04-07 22:47:19 +0900953extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
954 int (*check_ready)(struct ata_link *link));
Tejun Heo936fd732007-08-06 18:36:23 +0900955extern int sata_link_debounce(struct ata_link *link,
956 const unsigned long *params, unsigned long deadline);
957extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
958 unsigned long deadline);
Tejun Heo1152b262010-09-01 17:50:05 +0200959extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
960 bool spm_wakeup);
Tejun Heocc0680a2007-08-06 18:36:23 +0900961extern int sata_link_hardreset(struct ata_link *link,
Tejun Heo9dadd452008-04-07 22:47:19 +0900962 const unsigned long *timing, unsigned long deadline,
963 bool *online, int (*check_ready)(struct ata_link *));
Tejun Heo57c9efd2008-04-07 22:47:19 +0900964extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
965 unsigned long deadline);
Tejun Heo203c75b2008-04-07 22:47:18 +0900966extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
Jeff Garzik28555682007-10-11 17:12:35 -0400967
Tejun Heof3187192007-04-17 23:44:07 +0900968extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
Tejun Heof5cda252007-04-17 23:44:07 +0900969extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
970 const struct ata_port_info * const * ppi, int n_ports);
Tejun Heob1c72912008-07-31 17:02:43 +0900971extern int ata_slave_link_init(struct ata_port *ap);
Tejun Heoecef7252007-04-17 23:44:06 +0900972extern int ata_host_start(struct ata_host *host);
Tejun Heof3187192007-04-17 23:44:07 +0900973extern int ata_host_register(struct ata_host *host,
974 struct scsi_host_template *sht);
Tejun Heof5cda252007-04-17 23:44:07 +0900975extern int ata_host_activate(struct ata_host *host, int irq,
976 irq_handler_t irq_handler, unsigned long irq_flags,
977 struct scsi_host_template *sht);
Tejun Heo0529c152007-01-20 16:00:26 +0900978extern void ata_host_detach(struct ata_host *host);
Jeff Garzikcca39742006-08-24 03:19:22 -0400979extern void ata_host_init(struct ata_host *, struct device *,
Tejun Heo029cfd62008-03-25 12:22:49 +0900980 unsigned long, struct ata_port_operations *);
Jeff Garzik193515d2005-11-07 00:59:37 -0500981extern int ata_scsi_detect(struct scsi_host_template *sht);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700982extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
Jeff Garzikf2812332010-11-16 02:10:29 -0500983extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd);
Jeff Garzik94be9a52009-01-16 10:17:09 -0500984extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev,
985 int cmd, void __user *arg);
Brian King80289162006-08-07 14:27:31 -0500986extern void ata_sas_port_destroy(struct ata_port *);
Jeff Garzikcca39742006-08-24 03:19:22 -0400987extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
Brian King80289162006-08-07 14:27:31 -0500988 struct ata_port_info *, struct Scsi_Host *);
989extern int ata_sas_port_init(struct ata_port *);
990extern int ata_sas_port_start(struct ata_port *ap);
991extern void ata_sas_port_stop(struct ata_port *ap);
992extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
Jeff Garzikb27dcfb2010-11-17 22:56:48 -0500993extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap);
Tejun Heo936fd732007-08-06 18:36:23 +0900994extern int sata_scr_valid(struct ata_link *link);
995extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
996extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
997extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
Tejun Heob5b3fa32008-07-31 17:02:42 +0900998extern bool ata_link_online(struct ata_link *link);
999extern bool ata_link_offline(struct ata_link *link);
Tejun Heo6ffa01d2007-03-02 17:32:47 +09001000#ifdef CONFIG_PM
Jeff Garzikcca39742006-08-24 03:19:22 -04001001extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
1002extern void ata_host_resume(struct ata_host *host);
Tejun Heo6ffa01d2007-03-02 17:32:47 +09001003#endif
Jeff Garzik67846b32005-10-05 02:58:32 -04001004extern int ata_ratelimit(void);
Tejun Heo97750ce2010-09-06 17:56:29 +02001005extern void ata_msleep(struct ata_port *ap, unsigned int msecs);
1006extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask,
1007 u32 val, unsigned long interval, unsigned long timeout);
Tejun Heo436d34b2008-04-02 17:28:46 +09001008extern int atapi_cmd_type(u8 opcode);
Tejun Heo99771262007-07-16 14:29:38 +09001009extern void ata_tf_to_fis(const struct ata_taskfile *tf,
1010 u8 pmp, int is_cmd, u8 *fis);
Jeff Garzik057ace52005-10-22 14:27:05 -04001011extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
Tejun Heo7dc951a2007-11-27 19:43:42 +09001012extern unsigned long ata_pack_xfermask(unsigned long pio_mask,
1013 unsigned long mwdma_mask, unsigned long udma_mask);
1014extern void ata_unpack_xfermask(unsigned long xfer_mask,
1015 unsigned long *pio_mask, unsigned long *mwdma_mask,
1016 unsigned long *udma_mask);
1017extern u8 ata_xfer_mask2mode(unsigned long xfer_mask);
1018extern unsigned long ata_xfer_mode2mask(u8 xfer_mode);
1019extern int ata_xfer_mode2shift(unsigned long xfer_mode);
1020extern const char *ata_mode_string(unsigned long xfer_mask);
1021extern unsigned long ata_id_xfermask(const u16 *id);
Tejun Heo31cc23b2007-09-23 13:14:12 +09001022extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
Brian Kinge46834c2006-03-17 17:04:03 -06001023extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001024extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
1025 unsigned int n_elem);
Jeff Garzik057ace52005-10-22 14:27:05 -04001026extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
Alan10305f02007-02-20 18:01:59 +00001027extern void ata_dev_disable(struct ata_device *adev);
Tejun Heo6a62a042006-02-13 10:02:46 +09001028extern void ata_id_string(const u16 *id, unsigned char *s,
1029 unsigned int ofs, unsigned int len);
1030extern void ata_id_c_string(const u16 *id, unsigned char *s,
1031 unsigned int ofs, unsigned int len);
Alan Cox963e4972008-07-24 17:16:06 +01001032extern unsigned int ata_do_dev_read_id(struct ata_device *dev,
1033 struct ata_taskfile *tf, u16 *id);
Tejun Heof686bcb2006-05-15 20:58:05 +09001034extern void ata_qc_complete(struct ata_queued_cmd *qc);
Tejun Heo79f97da2008-04-07 22:47:20 +09001035extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active);
Jeff Garzikb27dcfb2010-11-17 22:56:48 -05001036extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001037extern int ata_std_bios_param(struct scsi_device *sdev,
1038 struct block_device *bdev,
1039 sector_t capacity, int geom[]);
Tejun Heod8d91292010-05-15 20:09:34 +02001040extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001041extern int ata_scsi_slave_config(struct scsi_device *sdev);
Tejun Heo83c47bc2006-05-31 18:28:07 +09001042extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
Tejun Heoa6e6ce82006-05-15 21:03:48 +09001043extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
Mike Christiee881a172009-10-15 17:46:39 -07001044 int queue_depth, int reason);
Tejun Heo3373efd2006-05-15 20:57:53 +09001045extern struct ata_device *ata_dev_pair(struct ata_device *adev);
Tejun Heo02607312007-08-06 18:36:23 +09001046extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
James Bottomley0e0b494c2011-01-23 09:42:50 -06001047extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap);
1048extern 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 -07001049
Alan Coxbe0d18d2007-03-06 02:37:56 -08001050extern int ata_cable_40wire(struct ata_port *ap);
1051extern int ata_cable_80wire(struct ata_port *ap);
1052extern int ata_cable_sata(struct ata_port *ap);
Tejun Heoc88f90c2007-11-27 19:43:48 +09001053extern int ata_cable_ignore(struct ata_port *ap);
Alan Coxbe0d18d2007-03-06 02:37:56 -08001054extern int ata_cable_unknown(struct ata_port *ap);
1055
Tejun Heo624d5c52008-03-25 22:16:41 +09001056/* Timing helpers */
Alan Cox1bc4ccf2006-01-09 17:18:14 +00001057extern unsigned int ata_pio_need_iordy(const struct ata_device *);
Tejun Heo63573572007-11-27 19:43:39 +09001058extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
Alan Cox452503f2005-10-21 19:01:32 -04001059extern int ata_timing_compute(struct ata_device *, unsigned short,
1060 struct ata_timing *, int, int);
1061extern void ata_timing_merge(const struct ata_timing *,
1062 const struct ata_timing *, struct ata_timing *,
1063 unsigned int);
Tejun Heoa0f79b92007-12-18 16:33:05 +09001064extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);
Alan Cox452503f2005-10-21 19:01:32 -04001065
Tejun Heo624d5c52008-03-25 22:16:41 +09001066/* PCI */
1067#ifdef CONFIG_PCI
1068struct pci_dev;
1069
1070struct pci_bits {
1071 unsigned int reg; /* PCI config register to read */
1072 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
1073 unsigned long mask;
1074 unsigned long val;
Alan Cox452503f2005-10-21 19:01:32 -04001075};
1076
Tejun Heo624d5c52008-03-25 22:16:41 +09001077extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
1078extern void ata_pci_remove_one(struct pci_dev *pdev);
1079
1080#ifdef CONFIG_PM
1081extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
1082extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
1083extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
1084extern int ata_pci_device_resume(struct pci_dev *pdev);
1085#endif /* CONFIG_PM */
1086#endif /* CONFIG_PCI */
1087
1088/*
1089 * ACPI - drivers/ata/libata-acpi.c
1090 */
Alan Coxe1ddb4b2007-08-16 02:33:36 -04001091#ifdef CONFIG_ATA_ACPI
Tejun Heoc05e6ff2007-12-15 15:05:02 +09001092static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1093{
1094 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
1095 return &ap->__acpi_init_gtm;
1096 return NULL;
1097}
Tejun Heo0d02f0b2007-12-15 15:04:57 +09001098int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
1099int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
Tejun Heo7c77fa42007-12-18 16:33:03 +09001100unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev,
1101 const struct ata_acpi_gtm *gtm);
Tejun Heo021ee9a2007-12-18 16:33:06 +09001102int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm);
Alan Coxe1ddb4b2007-08-16 02:33:36 -04001103#else
Tejun Heoc05e6ff2007-12-15 15:05:02 +09001104static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1105{
1106 return NULL;
1107}
Tejun Heo7c77fa42007-12-18 16:33:03 +09001108
1109static inline int ata_acpi_stm(const struct ata_port *ap,
1110 struct ata_acpi_gtm *stm)
1111{
1112 return -ENOSYS;
1113}
1114
1115static inline int ata_acpi_gtm(const struct ata_port *ap,
1116 struct ata_acpi_gtm *stm)
1117{
1118 return -ENOSYS;
1119}
1120
1121static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
1122 const struct ata_acpi_gtm *gtm)
1123{
1124 return 0;
1125}
Tejun Heo021ee9a2007-12-18 16:33:06 +09001126
1127static inline int ata_acpi_cbl_80wire(struct ata_port *ap,
1128 const struct ata_acpi_gtm *gtm)
1129{
1130 return 0;
1131}
Alan Coxe1ddb4b2007-08-16 02:33:36 -04001132#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133
Tejun Heoece1d632006-04-02 18:51:53 +09001134/*
Tejun Heo624d5c52008-03-25 22:16:41 +09001135 * EH - drivers/ata/libata-eh.c
Tejun Heoece1d632006-04-02 18:51:53 +09001136 */
Tejun Heo7b70fc02006-05-15 20:58:07 +09001137extern void ata_port_schedule_eh(struct ata_port *ap);
Tejun Heodbd82612007-08-06 18:36:23 +09001138extern int ata_link_abort(struct ata_link *link);
Tejun Heo7b70fc02006-05-15 20:58:07 +09001139extern int ata_port_abort(struct ata_port *ap);
Tejun Heoe3180492006-05-15 20:58:09 +09001140extern int ata_port_freeze(struct ata_port *ap);
Tejun Heo7d77b242007-09-23 13:14:13 +09001141extern int sata_async_notification(struct ata_port *ap);
Tejun Heoe3180492006-05-15 20:58:09 +09001142
1143extern void ata_eh_freeze_port(struct ata_port *ap);
1144extern void ata_eh_thaw_port(struct ata_port *ap);
Tejun Heo7b70fc02006-05-15 20:58:07 +09001145
Tejun Heoece1d632006-04-02 18:51:53 +09001146extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
1147extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
Mark Lord10acf3b2008-05-02 02:14:53 -04001148extern void ata_eh_analyze_ncq_error(struct ata_link *link);
Tejun Heoece1d632006-04-02 18:51:53 +09001149
Tejun Heof5914a42006-05-31 18:27:48 +09001150extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
1151 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
1152 ata_postreset_fn_t postreset);
Tejun Heoa1efdab2008-03-25 12:22:50 +09001153extern void ata_std_error_handler(struct ata_port *ap);
Kristen Carlson Accardi8a745f12011-03-04 10:24:11 -08001154extern int ata_link_nr_enabled(struct ata_link *link);
Tejun Heo022bdb02006-05-15 20:58:22 +09001155
Tejun Heo61440db2006-05-15 20:57:55 +09001156/*
Tejun Heo68d1d072008-03-25 12:22:49 +09001157 * Base operations to inherit from and initializers for sht
1158 *
1159 * Operations
1160 *
1161 * base : Common to all libata drivers.
1162 * sata : SATA controllers w/ native interface.
1163 * pmp : SATA controllers w/ PMP support.
1164 * sff : SFF ATA controllers w/o BMDMA support.
1165 * bmdma : SFF ATA controllers w/ BMDMA support.
1166 *
1167 * sht initializers
1168 *
1169 * BASE : Common to all libata drivers. The user must set
1170 * sg_tablesize and dma_boundary.
1171 * PIO : SFF ATA controllers w/ only PIO support.
1172 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and
1173 * dma_boundary are set to BMDMA limits.
1174 * NCQ : SATA controllers supporting NCQ. The user must set
1175 * sg_tablesize, dma_boundary and can_queue.
1176 */
1177extern const struct ata_port_operations ata_base_port_ops;
1178extern const struct ata_port_operations sata_port_ops;
Elias Oltmanns45fabbb2008-09-21 11:54:08 +02001179extern struct device_attribute *ata_common_sdev_attrs[];
Tejun Heo68d1d072008-03-25 12:22:49 +09001180
1181#define ATA_BASE_SHT(drv_name) \
1182 .module = THIS_MODULE, \
1183 .name = drv_name, \
1184 .ioctl = ata_scsi_ioctl, \
1185 .queuecommand = ata_scsi_queuecmd, \
1186 .can_queue = ATA_DEF_QUEUE, \
1187 .this_id = ATA_SHT_THIS_ID, \
1188 .cmd_per_lun = ATA_SHT_CMD_PER_LUN, \
1189 .emulated = ATA_SHT_EMULATED, \
1190 .use_clustering = ATA_SHT_USE_CLUSTERING, \
1191 .proc_name = drv_name, \
1192 .slave_configure = ata_scsi_slave_config, \
1193 .slave_destroy = ata_scsi_slave_destroy, \
Elias Oltmanns45fabbb2008-09-21 11:54:08 +02001194 .bios_param = ata_std_bios_param, \
Tejun Heod8d91292010-05-15 20:09:34 +02001195 .unlock_native_capacity = ata_scsi_unlock_native_capacity, \
Elias Oltmanns45fabbb2008-09-21 11:54:08 +02001196 .sdev_attrs = ata_common_sdev_attrs
Tejun Heo68d1d072008-03-25 12:22:49 +09001197
Tejun Heo68d1d072008-03-25 12:22:49 +09001198#define ATA_NCQ_SHT(drv_name) \
1199 ATA_BASE_SHT(drv_name), \
1200 .change_queue_depth = ata_scsi_change_queue_depth
1201
1202/*
Tejun Heo071f44b2008-04-07 22:47:22 +09001203 * PMP helpers
1204 */
Tejun Heo88fcd562008-04-07 22:47:22 +09001205#ifdef CONFIG_SATA_PMP
Tejun Heo071f44b2008-04-07 22:47:22 +09001206static inline bool sata_pmp_supported(struct ata_port *ap)
1207{
1208 return ap->flags & ATA_FLAG_PMP;
1209}
1210
1211static inline bool sata_pmp_attached(struct ata_port *ap)
1212{
1213 return ap->nr_pmp_links != 0;
1214}
1215
1216static inline int ata_is_host_link(const struct ata_link *link)
1217{
Tejun Heob1c72912008-07-31 17:02:43 +09001218 return link == &link->ap->link || link == link->ap->slave_link;
Tejun Heo071f44b2008-04-07 22:47:22 +09001219}
Tejun Heo88fcd562008-04-07 22:47:22 +09001220#else /* CONFIG_SATA_PMP */
1221static inline bool sata_pmp_supported(struct ata_port *ap)
1222{
1223 return false;
1224}
1225
1226static inline bool sata_pmp_attached(struct ata_port *ap)
1227{
1228 return false;
1229}
1230
1231static inline int ata_is_host_link(const struct ata_link *link)
1232{
1233 return 1;
1234}
1235#endif /* CONFIG_SATA_PMP */
Tejun Heo071f44b2008-04-07 22:47:22 +09001236
1237static inline int sata_srst_pmp(struct ata_link *link)
1238{
1239 if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
1240 return SATA_PMP_CTRL_PORT;
1241 return link->pmp;
1242}
1243
1244/*
Tejun Heo61440db2006-05-15 20:57:55 +09001245 * printk helpers
1246 */
1247#define ata_port_printk(ap, lv, fmt, args...) \
Tejun Heoc2e366a2007-12-15 15:04:58 +09001248 printk("%sata%u: "fmt, lv, (ap)->print_id , ##args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001249
Tejun Heo89898052007-08-06 18:36:23 +09001250#define ata_link_printk(link, lv, fmt, args...) do { \
Tejun Heob1c72912008-07-31 17:02:43 +09001251 if (sata_pmp_attached((link)->ap) || (link)->ap->slave_link) \
Tejun Heoc2e366a2007-12-15 15:04:58 +09001252 printk("%sata%u.%02u: "fmt, lv, (link)->ap->print_id, \
Tejun Heo89898052007-08-06 18:36:23 +09001253 (link)->pmp , ##args); \
1254 else \
Tejun Heoc2e366a2007-12-15 15:04:58 +09001255 printk("%sata%u: "fmt, lv, (link)->ap->print_id , ##args); \
Tejun Heo89898052007-08-06 18:36:23 +09001256 } while(0)
Tejun Heo9af5c9c2007-08-06 18:36:22 +09001257
Tejun Heo61440db2006-05-15 20:57:55 +09001258#define ata_dev_printk(dev, lv, fmt, args...) \
Tejun Heoc2e366a2007-12-15 15:04:58 +09001259 printk("%sata%u.%02u: "fmt, lv, (dev)->link->ap->print_id, \
Tejun Heo89898052007-08-06 18:36:23 +09001260 (dev)->link->pmp + (dev)->devno , ##args)
Tejun Heo61440db2006-05-15 20:57:55 +09001261
1262/*
Tejun Heof3e81b12006-05-15 20:58:21 +09001263 * ata_eh_info helpers
1264 */
Tejun Heocb94c1c2007-07-30 14:24:15 +09001265extern void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...)
1266 __attribute__ ((format (printf, 2, 3)));
1267extern void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...)
1268 __attribute__ ((format (printf, 2, 3)));
Tejun Heob64bbc32007-07-16 14:29:39 +09001269extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
Tejun Heof3e81b12006-05-15 20:58:21 +09001270
Tejun Heoc0b6c032006-07-03 16:07:26 +09001271static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
1272{
Tejun Heob558edd2008-01-24 00:05:14 +09001273 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
Tejun Heof8f1e1c2007-07-16 14:29:40 +09001274 ehi->flags |= ATA_EHI_HOTPLUGGED;
Tejun Heob558edd2008-01-24 00:05:14 +09001275 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;
Tejun Heoc0b6c032006-07-03 16:07:26 +09001276 ehi->err_mask |= AC_ERR_ATA_BUS;
1277}
1278
Tejun Heof3e81b12006-05-15 20:58:21 +09001279/*
Tejun Heocbcdd872007-08-18 13:14:55 +09001280 * port description helpers
1281 */
1282extern void ata_port_desc(struct ata_port *ap, const char *fmt, ...)
1283 __attribute__ ((format (printf, 2, 3)));
1284#ifdef CONFIG_PCI
1285extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
1286 const char *name);
1287#endif
1288
Linus Torvalds1da177e2005-04-16 15:20:36 -07001289static inline unsigned int ata_tag_valid(unsigned int tag)
1290{
1291 return (tag < ATA_MAX_QUEUE) ? 1 : 0;
1292}
1293
Tejun Heo2ab7db12006-05-15 20:58:02 +09001294static inline unsigned int ata_tag_internal(unsigned int tag)
1295{
Yoichi Yuasa83c063d2008-02-28 21:43:13 +09001296 return tag == ATA_TAG_INTERNAL;
Tejun Heo2ab7db12006-05-15 20:58:02 +09001297}
1298
Tejun Heo5806db22006-06-24 20:30:19 +09001299/*
1300 * device helpers
1301 */
Tejun Heoe1211e32006-04-01 01:38:18 +09001302static inline unsigned int ata_class_enabled(unsigned int class)
Tejun Heo597afd22006-03-01 01:25:38 +09001303{
Tejun Heoe0a71752007-09-23 13:14:12 +09001304 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
1305 class == ATA_DEV_PMP || class == ATA_DEV_SEMB;
Tejun Heo597afd22006-03-01 01:25:38 +09001306}
1307
Tejun Heoe1211e32006-04-01 01:38:18 +09001308static inline unsigned int ata_class_disabled(unsigned int class)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001309{
Tejun Heoe0a71752007-09-23 13:14:12 +09001310 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
1311 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP;
Tejun Heoe1211e32006-04-01 01:38:18 +09001312}
1313
Tejun Heo002c8052006-04-02 17:54:46 +09001314static inline unsigned int ata_class_absent(unsigned int class)
1315{
1316 return !ata_class_enabled(class) && !ata_class_disabled(class);
1317}
1318
Tejun Heoe1211e32006-04-01 01:38:18 +09001319static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
1320{
1321 return ata_class_enabled(dev->class);
1322}
1323
1324static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
1325{
1326 return ata_class_disabled(dev->class);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001327}
1328
Tejun Heo002c8052006-04-02 17:54:46 +09001329static inline unsigned int ata_dev_absent(const struct ata_device *dev)
1330{
1331 return ata_class_absent(dev->class);
1332}
1333
Tejun Heo5806db22006-06-24 20:30:19 +09001334/*
Tejun Heof58229f2007-08-06 18:36:23 +09001335 * link helpers
Tejun Heo5806db22006-06-24 20:30:19 +09001336 */
Tejun Heof58229f2007-08-06 18:36:23 +09001337static inline int ata_link_max_devices(const struct ata_link *link)
Tejun Heo5806db22006-06-24 20:30:19 +09001338{
Tejun Heo89898052007-08-06 18:36:23 +09001339 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS)
Tejun Heo5806db22006-06-24 20:30:19 +09001340 return 2;
1341 return 1;
1342}
1343
Tejun Heoda917d62007-09-23 13:14:12 +09001344static inline int ata_link_active(struct ata_link *link)
1345{
1346 return ata_tag_valid(link->active_tag) || link->sactive;
1347}
1348
Tejun Heo1eca4362008-11-03 20:03:17 +09001349/*
1350 * Iterators
1351 *
1352 * ATA_LITER_* constants are used to select link iteration mode and
1353 * ATA_DITER_* device iteration mode.
1354 *
1355 * For a custom iteration directly using ata_{link|dev}_next(), if
1356 * @link or @dev, respectively, is NULL, the first element is
1357 * returned. @dev and @link can be any valid device or link and the
1358 * next element according to the iteration mode will be returned.
1359 * After the last element, NULL is returned.
1360 */
1361enum ata_link_iter_mode {
1362 ATA_LITER_EDGE, /* if present, PMP links only; otherwise,
1363 * host link. no slave link */
1364 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */
1365 ATA_LITER_PMP_FIRST, /* PMP links followed by host link,
1366 * slave link still comes after host link */
1367};
Tejun Heo89898052007-08-06 18:36:23 +09001368
Tejun Heo1eca4362008-11-03 20:03:17 +09001369enum ata_dev_iter_mode {
1370 ATA_DITER_ENABLED,
1371 ATA_DITER_ENABLED_REVERSE,
1372 ATA_DITER_ALL,
1373 ATA_DITER_ALL_REVERSE,
1374};
Tejun Heo89898052007-08-06 18:36:23 +09001375
Tejun Heo1eca4362008-11-03 20:03:17 +09001376extern struct ata_link *ata_link_next(struct ata_link *link,
1377 struct ata_port *ap,
1378 enum ata_link_iter_mode mode);
Tejun Heof58229f2007-08-06 18:36:23 +09001379
Tejun Heo1eca4362008-11-03 20:03:17 +09001380extern struct ata_device *ata_dev_next(struct ata_device *dev,
1381 struct ata_link *link,
1382 enum ata_dev_iter_mode mode);
Tejun Heof58229f2007-08-06 18:36:23 +09001383
Tejun Heo1eca4362008-11-03 20:03:17 +09001384/*
1385 * Shortcut notation for iterations
1386 *
1387 * ata_for_each_link() iterates over each link of @ap according to
1388 * @mode. @link points to the current link in the loop. @link is
1389 * NULL after loop termination. ata_for_each_dev() works the same way
1390 * except that it iterates over each device of @link.
1391 *
1392 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be
1393 * specified when using the following shorthand notations. Only the
1394 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be
1395 * specified. This not only increases brevity but also makes it
1396 * impossible to use ATA_LITER_* for device iteration or vice-versa.
1397 */
1398#define ata_for_each_link(link, ap, mode) \
1399 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1400 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1401
1402#define ata_for_each_dev(dev, link, mode) \
1403 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1404 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
Tejun Heo5806db22006-06-24 20:30:19 +09001405
Tejun Heo6d1245b2007-02-20 23:20:27 +09001406/**
1407 * ata_ncq_enabled - Test whether NCQ is enabled
1408 * @dev: ATA device to test for
1409 *
1410 * LOCKING:
1411 * spin_lock_irqsave(host lock)
1412 *
1413 * RETURNS:
1414 * 1 if NCQ is enabled for @dev, 0 otherwise.
1415 */
1416static inline int ata_ncq_enabled(struct ata_device *dev)
1417{
1418 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF |
1419 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
1420}
Edward Falk0baab862005-06-02 18:17:13 -04001421
Linus Torvalds1da177e2005-04-16 15:20:36 -07001422static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
1423{
1424 qc->tf.ctl |= ATA_NIEN;
1425}
1426
Tejun Heof69499f2006-05-15 20:58:03 +09001427static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
1428 unsigned int tag)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001429{
1430 if (likely(ata_tag_valid(tag)))
1431 return &ap->qcmd[tag];
1432 return NULL;
1433}
1434
Tejun Heof69499f2006-05-15 20:58:03 +09001435static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
1436 unsigned int tag)
1437{
1438 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
1439
1440 if (unlikely(!qc) || !ap->ops->error_handler)
1441 return qc;
1442
1443 if ((qc->flags & (ATA_QCFLAG_ACTIVE |
1444 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE)
1445 return qc;
1446
1447 return NULL;
1448}
1449
Tejun Heoaacda372008-03-18 17:47:43 +09001450static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc)
1451{
1452 return qc->nbytes - min(qc->extrabytes, qc->nbytes);
1453}
1454
Tejun Heo3373efd2006-05-15 20:57:53 +09001455static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001456{
1457 memset(tf, 0, sizeof(*tf));
1458
Tejun Heo5fe74542010-05-10 21:41:37 +02001459#ifdef CONFIG_ATA_SFF
Tejun Heo9af5c9c2007-08-06 18:36:22 +09001460 tf->ctl = dev->link->ap->ctl;
Tejun Heo5fe74542010-05-10 21:41:37 +02001461#else
1462 tf->ctl = ATA_DEVCTL_OBS;
1463#endif
Tejun Heo3373efd2006-05-15 20:57:53 +09001464 if (dev->devno == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001465 tf->device = ATA_DEVICE_OBS;
1466 else
1467 tf->device = ATA_DEVICE_OBS | ATA_DEV1;
1468}
1469
Jeff Garzik2c13b7c2005-11-14 14:14:16 -05001470static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
1471{
Tejun Heo501e0c52007-01-17 11:34:02 +09001472 qc->dma_dir = DMA_NONE;
Tejun Heoff2aeb12007-12-05 16:43:11 +09001473 qc->sg = NULL;
Jeff Garzik2c13b7c2005-11-14 14:14:16 -05001474 qc->flags = 0;
Jens Axboe87260212007-10-16 11:14:12 +02001475 qc->cursg = NULL;
1476 qc->cursg_ofs = 0;
Tejun Heoaacda372008-03-18 17:47:43 +09001477 qc->nbytes = qc->extrabytes = qc->curbytes = 0;
Brian King7a801182007-01-17 12:32:12 -06001478 qc->n_elem = 0;
Albert Leea22e2eb2005-12-05 15:38:02 +08001479 qc->err_mask = 0;
Mark Lord5a5dbd12007-03-16 10:22:26 -04001480 qc->sect_size = ATA_SECT_SIZE;
Jeff Garzik2c13b7c2005-11-14 14:14:16 -05001481
Tejun Heo3373efd2006-05-15 20:57:53 +09001482 ata_tf_init(qc->dev, &qc->tf);
Tejun Heoe61e0672006-05-15 20:57:40 +09001483
1484 /* init result_tf such that it indicates normal completion */
1485 qc->result_tf.command = ATA_DRDY;
1486 qc->result_tf.feature = 0;
Jeff Garzik2c13b7c2005-11-14 14:14:16 -05001487}
1488
Jeff Garzik057ace52005-10-22 14:27:05 -04001489static inline int ata_try_flush_cache(const struct ata_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001490{
1491 return ata_id_wcache_enabled(dev->id) ||
1492 ata_id_has_flush(dev->id) ||
1493 ata_id_has_flush_ext(dev->id);
1494}
1495
Jeff Garzika7dac442005-10-30 04:44:42 -05001496static inline unsigned int ac_err_mask(u8 status)
1497{
Albert Lee3655d1d2006-05-19 11:43:04 +08001498 if (status & (ATA_BUSY | ATA_DRQ))
Tejun Heo11a56d22006-01-23 13:09:36 +09001499 return AC_ERR_HSM;
Jeff Garzika7dac442005-10-30 04:44:42 -05001500 if (status & (ATA_ERR | ATA_DF))
1501 return AC_ERR_DEV;
1502 return 0;
1503}
1504
1505static inline unsigned int __ac_err_mask(u8 status)
1506{
1507 unsigned int mask = ac_err_mask(status);
1508 if (mask == 0)
1509 return AC_ERR_OTHER;
1510 return mask;
1511}
1512
Jeff Garzik35bb94b2006-04-11 13:12:34 -04001513static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
1514{
Tejun Heo49114872007-04-17 23:44:06 +09001515 return *(struct ata_port **)&host->hostdata[0];
Jeff Garzik35bb94b2006-04-11 13:12:34 -04001516}
1517
Tejun Heo78ab88f2008-05-01 23:41:41 +09001518static inline int ata_check_ready(u8 status)
1519{
Jeff Garzik005b1f72008-05-09 15:00:55 -04001520 if (!(status & ATA_BUSY))
1521 return 1;
Tejun Heo78ab88f2008-05-01 23:41:41 +09001522
1523 /* 0xff indicates either no device or device not ready */
1524 if (status == 0xff)
1525 return -ENODEV;
1526
Jeff Garzik005b1f72008-05-09 15:00:55 -04001527 return 0;
Tejun Heo78ab88f2008-05-01 23:41:41 +09001528}
1529
Tejun Heo341c2c92008-05-20 02:17:51 +09001530static inline unsigned long ata_deadline(unsigned long from_jiffies,
1531 unsigned long timeout_msecs)
1532{
1533 return from_jiffies + msecs_to_jiffies(timeout_msecs);
1534}
1535
Alan Coxb15b3eb2008-08-01 09:18:34 +01001536/* Don't open code these in drivers as there are traps. Firstly the range may
1537 change in future hardware and specs, secondly 0xFF means 'no DMA' but is
1538 > UDMA_0. Dyma ddreigiau */
1539
1540static inline int ata_using_mwdma(struct ata_device *adev)
1541{
1542 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4)
1543 return 1;
1544 return 0;
1545}
1546
1547static inline int ata_using_udma(struct ata_device *adev)
1548{
1549 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7)
1550 return 1;
1551 return 0;
1552}
1553
1554static inline int ata_dma_enabled(struct ata_device *adev)
1555{
1556 return (adev->dma_mode == 0xFF ? 0 : 1);
1557}
Tejun Heo48515f62008-04-07 22:47:21 +09001558
1559/**************************************************************************
1560 * PMP - drivers/ata/libata-pmp.c
1561 */
Tejun Heo88fcd562008-04-07 22:47:22 +09001562#ifdef CONFIG_SATA_PMP
1563
Tejun Heo48515f62008-04-07 22:47:21 +09001564extern const struct ata_port_operations sata_pmp_port_ops;
1565
1566extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
1567extern void sata_pmp_error_handler(struct ata_port *ap);
1568
Tejun Heo88fcd562008-04-07 22:47:22 +09001569#else /* CONFIG_SATA_PMP */
1570
1571#define sata_pmp_port_ops sata_port_ops
1572#define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1573#define sata_pmp_error_handler ata_std_error_handler
1574
1575#endif /* CONFIG_SATA_PMP */
1576
Tejun Heo48515f62008-04-07 22:47:21 +09001577
Tejun Heo624d5c52008-03-25 22:16:41 +09001578/**************************************************************************
1579 * SFF - drivers/ata/libata-sff.c
1580 */
Tejun Heo127102a2008-04-07 22:47:21 +09001581#ifdef CONFIG_ATA_SFF
1582
Tejun Heo624d5c52008-03-25 22:16:41 +09001583extern const struct ata_port_operations ata_sff_port_ops;
Alan Cox871af122009-01-05 14:16:39 +00001584extern const struct ata_port_operations ata_bmdma32_port_ops;
Tejun Heo624d5c52008-03-25 22:16:41 +09001585
1586/* PIO only, sg_tablesize and dma_boundary limits can be removed */
1587#define ATA_PIO_SHT(drv_name) \
1588 ATA_BASE_SHT(drv_name), \
1589 .sg_tablesize = LIBATA_MAX_PRD, \
1590 .dma_boundary = ATA_DMA_BOUNDARY
1591
Tejun Heo9363c382008-04-07 22:47:16 +09001592extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
1593extern u8 ata_sff_check_status(struct ata_port *ap);
Alan Coxa57c1ba2008-05-29 22:10:58 +01001594extern void ata_sff_pause(struct ata_port *ap);
1595extern void ata_sff_dma_pause(struct ata_port *ap);
Tejun Heo9363c382008-04-07 22:47:16 +09001596extern int ata_sff_busy_sleep(struct ata_port *ap,
1597 unsigned long timeout_pat, unsigned long timeout);
Tejun Heo705e76b2008-04-07 22:47:19 +09001598extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline);
Tejun Heo9363c382008-04-07 22:47:16 +09001599extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
1600extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
1601extern void ata_sff_exec_command(struct ata_port *ap,
1602 const struct ata_taskfile *tf);
1603extern unsigned int ata_sff_data_xfer(struct ata_device *dev,
Tejun Heo624d5c52008-03-25 22:16:41 +09001604 unsigned char *buf, unsigned int buflen, int rw);
Alan Cox871af122009-01-05 14:16:39 +00001605extern unsigned int ata_sff_data_xfer32(struct ata_device *dev,
1606 unsigned char *buf, unsigned int buflen, int rw);
Tejun Heo9363c382008-04-07 22:47:16 +09001607extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev,
Tejun Heo624d5c52008-03-25 22:16:41 +09001608 unsigned char *buf, unsigned int buflen, int rw);
Sergei Shtylyove42a5422010-05-07 22:49:02 +04001609extern void ata_sff_irq_on(struct ata_port *ap);
Tejun Heo9363c382008-04-07 22:47:16 +09001610extern void ata_sff_irq_clear(struct ata_port *ap);
1611extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
1612 u8 status, int in_wq);
Viresh Kumar64b97592011-02-22 14:32:38 +05301613extern void ata_sff_queue_work(struct work_struct *work);
1614extern void ata_sff_queue_delayed_work(struct delayed_work *dwork,
1615 unsigned long delay);
Gwendal Grignouea3c6452010-08-31 16:20:36 -07001616extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay);
Tejun Heo9363c382008-04-07 22:47:16 +09001617extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
Tejun Heo22183bf2008-04-07 22:47:20 +09001618extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
Tejun Heoc3b28892010-05-19 22:10:21 +02001619extern unsigned int ata_sff_port_intr(struct ata_port *ap,
Tejun Heo9363c382008-04-07 22:47:16 +09001620 struct ata_queued_cmd *qc);
1621extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
Alan Coxc96f1732009-03-24 10:23:46 +00001622extern void ata_sff_lost_interrupt(struct ata_port *ap);
Tejun Heo9363c382008-04-07 22:47:16 +09001623extern void ata_sff_freeze(struct ata_port *ap);
1624extern void ata_sff_thaw(struct ata_port *ap);
1625extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
1626extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
1627 u8 *r_err);
Tejun Heo705e76b2008-04-07 22:47:19 +09001628extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
1629 unsigned long deadline);
Tejun Heo9363c382008-04-07 22:47:16 +09001630extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
Tejun Heo624d5c52008-03-25 22:16:41 +09001631 unsigned long deadline);
Tejun Heo9363c382008-04-07 22:47:16 +09001632extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
1633 unsigned long deadline);
1634extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
Alan Cox3d47aa82009-03-24 10:23:19 +00001635extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
Tejun Heo9363c382008-04-07 22:47:16 +09001636extern void ata_sff_error_handler(struct ata_port *ap);
Tejun Heo9363c382008-04-07 22:47:16 +09001637extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
Tejun Heo624d5c52008-03-25 22:16:41 +09001638#ifdef CONFIG_PCI
Tejun Heo9363c382008-04-07 22:47:16 +09001639extern int ata_pci_sff_init_host(struct ata_host *host);
1640extern int ata_pci_sff_prepare_host(struct pci_dev *pdev,
Tejun Heo624d5c52008-03-25 22:16:41 +09001641 const struct ata_port_info * const * ppi,
1642 struct ata_host **r_host);
Tejun Heo9363c382008-04-07 22:47:16 +09001643extern int ata_pci_sff_activate_host(struct ata_host *host,
Tejun Heo624d5c52008-03-25 22:16:41 +09001644 irq_handler_t irq_handler,
1645 struct scsi_host_template *sht);
Tejun Heo9363c382008-04-07 22:47:16 +09001646extern int ata_pci_sff_init_one(struct pci_dev *pdev,
Alan Cox16ea0fc2010-02-23 02:26:06 -05001647 const struct ata_port_info * const * ppi,
1648 struct scsi_host_template *sht, void *host_priv, int hflags);
Tejun Heo624d5c52008-03-25 22:16:41 +09001649#endif /* CONFIG_PCI */
1650
Tejun Heo9a7780c2010-05-19 22:10:24 +02001651#ifdef CONFIG_ATA_BMDMA
1652
1653extern const struct ata_port_operations ata_bmdma_port_ops;
1654
1655#define ATA_BMDMA_SHT(drv_name) \
1656 ATA_BASE_SHT(drv_name), \
1657 .sg_tablesize = LIBATA_MAX_PRD, \
1658 .dma_boundary = ATA_DMA_BOUNDARY
1659
Tejun Heof47451c2010-05-10 21:41:40 +02001660extern void ata_bmdma_qc_prep(struct ata_queued_cmd *qc);
Tejun Heo360ff782010-05-10 21:41:42 +02001661extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc);
Tejun Heof47451c2010-05-10 21:41:40 +02001662extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc);
Tejun Heoc3b28892010-05-19 22:10:21 +02001663extern unsigned int ata_bmdma_port_intr(struct ata_port *ap,
1664 struct ata_queued_cmd *qc);
1665extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance);
Tejun Heofe06e5f2010-05-10 21:41:39 +02001666extern void ata_bmdma_error_handler(struct ata_port *ap);
1667extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
Tejun Heo37f65b82010-05-19 22:10:20 +02001668extern void ata_bmdma_irq_clear(struct ata_port *ap);
Tejun Heo9f2f7212010-05-10 21:41:32 +02001669extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
1670extern void ata_bmdma_start(struct ata_queued_cmd *qc);
1671extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
1672extern u8 ata_bmdma_status(struct ata_port *ap);
Tejun Heoc7087652010-05-10 21:41:34 +02001673extern int ata_bmdma_port_start(struct ata_port *ap);
1674extern int ata_bmdma_port_start32(struct ata_port *ap);
Tejun Heo9f2f7212010-05-10 21:41:32 +02001675
1676#ifdef CONFIG_PCI
1677extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
Tejun Heoc7087652010-05-10 21:41:34 +02001678extern void ata_pci_bmdma_init(struct ata_host *host);
Tejun Heo1c5afdf2010-05-19 22:10:22 +02001679extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev,
1680 const struct ata_port_info * const * ppi,
1681 struct ata_host **r_host);
1682extern int ata_pci_bmdma_init_one(struct pci_dev *pdev,
1683 const struct ata_port_info * const * ppi,
1684 struct scsi_host_template *sht,
1685 void *host_priv, int hflags);
Tejun Heo9f2f7212010-05-10 21:41:32 +02001686#endif /* CONFIG_PCI */
Tejun Heo9a7780c2010-05-19 22:10:24 +02001687#endif /* CONFIG_ATA_BMDMA */
Tejun Heo9f2f7212010-05-10 21:41:32 +02001688
Tejun Heo624d5c52008-03-25 22:16:41 +09001689/**
Tejun Heo9363c382008-04-07 22:47:16 +09001690 * ata_sff_busy_wait - Wait for a port status register
Tejun Heo624d5c52008-03-25 22:16:41 +09001691 * @ap: Port to wait for.
1692 * @bits: bits that must be clear
1693 * @max: number of 10uS waits to perform
1694 *
1695 * Waits up to max*10 microseconds for the selected bits in the port's
1696 * status register to be cleared.
1697 * Returns final value of status register.
1698 *
1699 * LOCKING:
1700 * Inherited from caller.
1701 */
Tejun Heo9363c382008-04-07 22:47:16 +09001702static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits,
1703 unsigned int max)
Tejun Heo624d5c52008-03-25 22:16:41 +09001704{
1705 u8 status;
1706
1707 do {
1708 udelay(10);
Tejun Heo5682ed32008-04-07 22:47:16 +09001709 status = ap->ops->sff_check_status(ap);
Tejun Heo624d5c52008-03-25 22:16:41 +09001710 max--;
1711 } while (status != 0xff && (status & bits) && (max > 0));
1712
1713 return status;
1714}
1715
1716/**
1717 * ata_wait_idle - Wait for a port to be idle.
1718 * @ap: Port to wait for.
1719 *
1720 * Waits up to 10ms for port's BUSY and DRQ signals to clear.
1721 * Returns final value of status register.
1722 *
1723 * LOCKING:
1724 * Inherited from caller.
1725 */
1726static inline u8 ata_wait_idle(struct ata_port *ap)
1727{
Tejun Heo9363c382008-04-07 22:47:16 +09001728 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
Tejun Heo624d5c52008-03-25 22:16:41 +09001729
1730#ifdef ATA_DEBUG
1731 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
1732 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n",
1733 status);
1734#endif
1735
1736 return status;
1737}
Tejun Heo127102a2008-04-07 22:47:21 +09001738#endif /* CONFIG_ATA_SFF */
Tejun Heo624d5c52008-03-25 22:16:41 +09001739
Linus Torvalds1da177e2005-04-16 15:20:36 -07001740#endif /* __LINUX_LIBATA_H__ */