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Merge branch 'for-4.4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...
[deliverable/linux.git] / include / linux / libata.h
CommitLineData
1da177e4 1/*
af36d7f0
JG		 2 * 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 *
1da177e4
LT		 24 */
25
26#ifndef __LINUX_LIBATA_H__
27#define __LINUX_LIBATA_H__
28
29#include <linux/delay.h>
341c2c95 30#include <linux/jiffies.h>
1da177e4 31#include <linux/interrupt.h>
1c72d8d9 32#include <linux/dma-mapping.h>
87260216 33#include <linux/scatterlist.h>
f0d36efd 34#include <linux/io.h>
1da177e4
LT		 35#include <linux/ata.h>
36#include <linux/workqueue.h>
35bb94b1 37#include <scsi/scsi_host.h>
11ef697b 38#include <linux/acpi.h>
ceb0c642 39#include <linux/cdrom.h>
c0c362b6 40#include <linux/sched.h>
1da177e4 41
a6d967a4
JG		 42/*
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
2ec7df04 47#include <asm/libata-portmap.h>
a6d967a4
JG		 48#else
49#include <asm-generic/libata-portmap.h>
50#endif
2ec7df04 51
1da177e4 52/*
bfd60579
RD		 53 * compile-time options: to be removed as soon as all the drivers are
54 * converted to the new debugging mechanism
1da177e4
LT		 55 */
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 */
1da177e4
LT		 60
61
62/* note: prints function name for you */
63#ifdef ATA_DEBUG
1f938d06 64#define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
1da177e4 65#ifdef ATA_VERBOSE_DEBUG
1f938d06 66#define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
1da177e4
LT		 67#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
1f938d06 75#define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args)
2c13b7ce 76
06296a1e
JP		 77#define ata_print_version_once(dev, version) \
78({ \
79 static bool __print_once; \
80 \
81 if (!__print_once) { \
82 __print_once = true; \
83 ata_print_version(dev, version); \
84 } \
85})
86
bfd60579
RD		 87/* NEW: debug levels */
88#define HAVE_LIBATA_MSG 1
89
90enum {
91 ATA_MSG_DRV = 0x0001,
92 ATA_MSG_INFO = 0x0002,
93 ATA_MSG_PROBE = 0x0004,
94 ATA_MSG_WARN = 0x0008,
95 ATA_MSG_MALLOC = 0x0010,
96 ATA_MSG_CTL = 0x0020,
97 ATA_MSG_INTR = 0x0040,
98 ATA_MSG_ERR = 0x0080,
99};
100
101#define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV)
102#define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO)
103#define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE)
104#define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN)
105#define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
106#define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL)
107#define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR)
108#define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR)
109
110static inline u32 ata_msg_init(int dval, int default_msg_enable_bits)
111{
112 if (dval < 0 || dval >= (sizeof(u32) * 8))
113 return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */
114 if (!dval)
115 return 0;
116 return (1 << dval) - 1;
117}
118
1da177e4
LT		 119/* defines only for the constants which don't work well as enums */
120#define ATA_TAG_POISON 0xfafbfcfdU
121
1da177e4
LT		 122enum {
123 /* various global constants */
124 LIBATA_MAX_PRD = ATA_MAX_PRD / 2,
d26fc955 125 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */
1da177e4 126 ATA_DEF_QUEUE = 1,
2ab7db1f 127 /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */
a6e6ce8e 128 ATA_MAX_QUEUE = 32,
2ab7db1f 129 ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1,
341c2c95 130 ATA_SHORT_PAUSE = 16,
1da177e4 131
140b5e59
TH		 132 ATAPI_MAX_DRAIN = 16 << 10,
133
b558eddd
TH		 134 ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1,
135
1da177e4 136 ATA_SHT_EMULATED = 1,
1da177e4 137 ATA_SHT_THIS_ID = -1,
cf482935 138 ATA_SHT_USE_CLUSTERING = 1,
1da177e4 139
dc34e7e1
SS		 140 /* struct ata_taskfile flags */
141 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
142 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
143 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
144 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
145 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */
146 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */
147 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */
148
149 /* protocol flags */
150 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */
151 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */
152 ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA,
153 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */
154 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */
155
1da177e4 156 /* struct ata_device stuff */
949b38af
TH		 157 ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */
158 ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */
029f5468 159 ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */
88e49034 160 ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */
6fc49adb 161 ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */
6746544c
TH		 162 ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */
163 ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */
7d77b247 164 ATA_DFLAG_AN = (1 << 7), /* AN configured */
91163006 165 ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */
2557164e 166 ATA_DFLAG_CFG_MASK = (1 << 12) - 1,
949b38af 167
2557164e
KCA		 168 ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */
169 ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */
054a5fba 170 ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */
00115e0f 171 ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */
45fabbb7 172 ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */
445d211b 173 ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */
ed36911c 174 ATA_DFLAG_NCQ_SEND_RECV = (1 << 19), /* device supports NCQ SEND and RECV */
f20ded38 175 ATA_DFLAG_INIT_MASK = (1 << 24) - 1,
1da177e4 176
f20ded38
TH		 177 ATA_DFLAG_DETACH = (1 << 24),
178 ATA_DFLAG_DETACHED = (1 << 25),
abdda733 179
b1354cbb 180 ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */
65fe1f0f 181 ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */
0d0cdb02 182 ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */
b1354cbb 183
1da177e4
LT		 184 ATA_DEV_UNKNOWN = 0, /* unknown device */
185 ATA_DEV_ATA = 1, /* ATA device */
186 ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */
187 ATA_DEV_ATAPI = 3, /* ATAPI device */
188 ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */
e0a71752
TH		 189 ATA_DEV_PMP = 5, /* SATA port multiplier */
190 ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */
191 ATA_DEV_SEMB = 7, /* SEMB */
192 ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */
9162c657
HR		 193 ATA_DEV_ZAC = 9, /* ZAC device */
194 ATA_DEV_NONE = 10, /* no device */
1da177e4 195
0c88758b 196 /* struct ata_link flags */
05944bdf 197 ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */
ae791c05
TH		 198 ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */
199 ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */
200 ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */
201 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB,
fd995f70 202 ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */
f9df58cb 203 ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */
18f7ba4c 204 ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */
6b7ae954 205 ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */
ca6d43b0 206 ATA_LFLAG_RST_ONCE = (1 << 9), /* limit recovery to one reset */
09c5b480 207 ATA_LFLAG_CHANGED = (1 << 10), /* LPM state changed on this link */
0c88758b 208
1da177e4 209 /* struct ata_port flags */
949b38af 210 ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */
1da177e4 211 /* (doesn't imply presence) */
949b38af 212 ATA_FLAG_SATA = (1 << 1),
ea013a9b 213 ATA_FLAG_NO_LOG_PAGE = (1 << 5), /* do not issue log page read */
949b38af
TH		 214 ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */
215 ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */
216 ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */
7395acb2
TH		 217 ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD
218 * doesn't handle PIO interrupts */
219 ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */
2a6e58d2
RW		 220 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */
221 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */
7395acb2 222 ATA_FLAG_DEBUGMSG = (1 << 13),
388539f3 223 ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */
b2a8bbe6 224 ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */
f834e49f 225 ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */
3cadbcc0 226 ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */
9f45cbd3 227 ATA_FLAG_AN = (1 << 18), /* controller supports AN */
e0a71752 228 ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */
40fb59e7 229 ATA_FLAG_FPDMA_AUX = (1 << 20), /* controller supports H2DFIS aux field */
18f7ba4c
KCA		 230 ATA_FLAG_EM = (1 << 21), /* driver supports enclosure
231 * management */
232 ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity
233 * led */
ae01b249 234 ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */
a1480a16 235 ATA_FLAG_SAS_HOST = (1 << 24), /* SAS host */
949b38af 236
b51e9e5d 237 /* bits 24:31 of ap->flags are reserved for LLD specific flags */
9ec957f2 238
e3cf95dd 239
b51e9e5d
TH		 240 /* struct ata_port pflags */
241 ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */
242 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */
243 ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */
244 ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */
245 ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */
b51e9e5d 246 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */
f4d6d004 247 ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */
afaa5c37 248 ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */
ece180d1
TH		 249 ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */
250 ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */
949b38af 251
b51e9e5d 252 ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */
500530f6 253 ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */
c05e6ff0 254 ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */
949b38af 255
e3cf95dd
AC		 256 ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */
257 ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */
8a3e33cf 258 ATA_PFLAG_EXTERNAL = (1 << 22), /* eSATA/external port */
e3cf95dd 259
949b38af
TH		 260 /* struct ata_queued_cmd flags */
261 ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */
001102d7 262 ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */
27197367 263 ATA_QCFLAG_IO = (1 << 3), /* standard IO command */
e61e0672 264 ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */
da917d69 265 ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */
e027bd36 266 ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */
03faab78 267 ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */
e61e0672 268
9ec957f2
TH		 269 ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */
270 ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */
271 ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */
1da177e4 272
4e5ec5db 273 /* host set flags */
cca3974e 274 ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */
ecef7253 275 ATA_HOST_STARTED = (1 << 1), /* Host started */
886ad09f 276 ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */
db63a4c8 277 ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */
9bec2e38 278
b8b275ef
TH		 279 /* bits 24:31 of host->flags are reserved for LLD specific flags */
280
1da177e4 281 /* various lengths of time */
341c2c95
TH		 282 ATA_TMOUT_BOOT = 30000, /* heuristic */
283 ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */
341c2c95 284 ATA_TMOUT_INTERNAL_QUICK = 5000,
45fabbb7 285 ATA_TMOUT_MAX_PARK = 30000,
1da177e4 286
b48d58f5
TH		 287 /*
288 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s
289 * is too much without parallel probing. Use 2s if parallel
290 * probing is available, 800ms otherwise.
88ff6eaf 291 */
b48d58f5
TH		 292 ATA_TMOUT_FF_WAIT_LONG = 2000,
293 ATA_TMOUT_FF_WAIT = 800,
88ff6eaf 294
705e76be
TH		 295 /* Spec mandates to wait for ">= 2ms" before checking status
296 * after reset. We wait 150ms, because that was the magic
297 * delay used for ATAPI devices in Hale Landis's ATADRVR, for
298 * the period of time between when the ATA command register is
299 * written, and then status is checked. Because waiting for
300 * "a while" before checking status is fine, post SRST, we
301 * perform this magic delay here as well.
302 *
303 * Old drivers/ide uses the 2mS rule and then waits for ready.
304 */
341c2c95 305 ATA_WAIT_AFTER_RESET = 150,
705e76be 306
9dadd45b
TH		 307 /* If PMP is supported, we have to do follow-up SRST. As some
308 * PMPs don't send D2H Reg FIS after hardreset, LLDs are
309 * advised to wait only for the following duration before
310 * doing SRST.
311 */
e7d3ef13 312 ATA_TMOUT_PMP_SRST_WAIT = 5000,
9dadd45b 313
09c5b480
GM		 314 /* When the LPM policy is set to ATA_LPM_MAX_POWER, there might
315 * be a spurious PHY event, so ignore the first PHY event that
316 * occurs within 10s after the policy change.
317 */
318 ATA_TMOUT_SPURIOUS_PHY = 10000,
319
1da177e4
LT		 320 /* ATA bus states */
321 BUS_UNKNOWN = 0,
322 BUS_DMA = 1,
323 BUS_IDLE = 2,
324 BUS_NOINTR = 3,
325 BUS_NODATA = 4,
326 BUS_TIMER = 5,
327 BUS_PIO = 6,
328 BUS_EDD = 7,
329 BUS_IDENTIFY = 8,
330 BUS_PACKET = 9,
331
332 /* SATA port states */
333 PORT_UNKNOWN = 0,
334 PORT_ENABLED = 1,
335 PORT_DISABLED = 2,
336
337 /* encoding various smaller bitmaps into a single
7dc951ae 338 * unsigned long bitmap
1da177e4 339 */
70cd071e
TH		 340 ATA_NR_PIO_MODES = 7,
341 ATA_NR_MWDMA_MODES = 5,
342 ATA_NR_UDMA_MODES = 8,
1da7b0d0
TH		 343
344 ATA_SHIFT_PIO = 0,
70cd071e
TH		 345 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES,
346 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES,
347
cedc9a47
JG		 348 /* size of buffer to pad xfers ending on unaligned boundaries */
349 ATA_DMA_PAD_SZ = 4,
949b38af 350
0c247c55
TH		 351 /* ering size */
352 ATA_ERING_SIZE = 32,
353
31cc23b3
TH		 354 /* return values for ->qc_defer */
355 ATA_DEFER_LINK = 1,
356 ATA_DEFER_PORT = 2,
357
f3e81b19
TH		 358 /* desc_len for ata_eh_info and context */
359 ATA_EH_DESC_LEN = 80,
360
9be1e979
TH		 361 /* reset / recovery action types */
362 ATA_EH_REVALIDATE = (1 << 0),
cf480626
TH		 363 ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */
364 ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */
365 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
f9df58cb 366 ATA_EH_ENABLE_LINK = (1 << 3),
45fabbb7 367 ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */
9be1e979 368
45fabbb7 369 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK,
b5b3fa38 370 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET |
6b7ae954 371 ATA_EH_ENABLE_LINK,
9be1e979 372
f3e81b19 373 /* ata_eh_info->flags */
abdda733 374 ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */
1cdaf534
TH		 375 ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */
376 ATA_EHI_QUIET = (1 << 3), /* be quiet */
e2f3d75f 377 ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */
abdda733 378
0d64a233
TH		 379 ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */
380 ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */
381 ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */
382 ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */
89692c03 383 ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */
f3e81b19 384
0d64a233 385 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
13abf50d 386
848e4c68
TH		 387 /* mask of flags to transfer *to* the slave link */
388 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET,
389
a1e10f7e
TH		 390 /* max tries if error condition is still set after ->error_handler */
391 ATA_EH_MAX_TRIES = 5,
ad9e2762 392
5040ab67
TH		 393 /* sometimes resuming a link requires several retries */
394 ATA_LINK_RESUME_TRIES = 5,
395
14d2bac1
TH		 396 /* how hard are we gonna try to probe/recover devices */
397 ATA_PROBE_MAX_TRIES = 3,
022bdb07 398 ATA_EH_DEV_TRIES = 3,
e0a71752
TH		 399 ATA_EH_PMP_TRIES = 5,
400 ATA_EH_PMP_LINK_TRIES = 3,
401
bf1bff6f 402 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */
f5914a46 403
87fbc5a0
TH		 404 /* This should match the actual table size of
405 * ata_eh_cmd_timeout_table in libata-eh.c.
406 */
6013efd8 407 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6,
87fbc5a0 408
93590859 409 /* Horkage types. May be set by libata or controller on drives
25985edc 410 (some horkage may be drive/controller pair dependent */
93590859
AC		 411
412 ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */
6919a0a6
AC		 413 ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */
414 ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */
18d6e9d5 415 ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */
16c55b03 416 ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */
50af2fa1 417 ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */
93328e11 418 ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */
6bbfd53d 419 ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */
2d3b8eea 420 ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */
9ce8e307 421 ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */
6a87e42e
TH		 422 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands
423 not multiple of 16 bytes */
877d0310 424 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */
9062712f 425 ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */
d0cb43b3 426 ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */
388539f3 427 ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */
43c9c591 428 ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */
a32450e1 429 ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17), /* Set max sects to 65535 */
966fbe19 430 ATA_HORKAGE_ATAPI_DMADIR = (1 << 18), /* device requires dmadir */
f78dea06 431 ATA_HORKAGE_NO_NCQ_TRIM = (1 << 19), /* don't use queued TRIM */
ecd75ad5
TH		 432 ATA_HORKAGE_NOLPM = (1 << 20), /* don't use LPM */
433 ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21), /* some WDs have broken LPM */
e61f7d1c 434 ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),/* guarantees zero after trim */
5d3abf8f 435 ATA_HORKAGE_NO_NCQ_LOG = (1 << 23), /* don't use NCQ for log read */
71d126fd 436 ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */
af34d637 437 ATA_HORKAGE_MAX_SEC_1024 = (1 << 25), /* Limit max sects to 1024 */
b3a70601 438
2dcb407e 439 /* DMA mask for user DMA control: User visible values; DO NOT
b3a70601
AC		 440 renumber */
441 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */
442 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */
443 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */
ceb0c642
TH		 444
445 /* ATAPI command types */
446 ATAPI_READ = 0, /* READs */
447 ATAPI_WRITE = 1, /* WRITEs */
448 ATAPI_READ_CD = 2, /* READ CD [MSF] */
e52dcc48
TH		 449 ATAPI_PASS_THRU = 3, /* SAT pass-thru */
450 ATAPI_MISC = 4, /* the rest */
624d5c51
TH		 451
452 /* Timing constants */
453 ATA_TIMING_SETUP = (1 << 0),
454 ATA_TIMING_ACT8B = (1 << 1),
455 ATA_TIMING_REC8B = (1 << 2),
456 ATA_TIMING_CYC8B = (1 << 3),
457 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
458 ATA_TIMING_CYC8B,
459 ATA_TIMING_ACTIVE = (1 << 4),
460 ATA_TIMING_RECOVER = (1 << 5),
3ada9c12
DD		 461 ATA_TIMING_DMACK_HOLD = (1 << 6),
462 ATA_TIMING_CYCLE = (1 << 7),
463 ATA_TIMING_UDMA = (1 << 8),
624d5c51
TH		 464 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
465 ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
466 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
3ada9c12
DD		 467 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE |
468 ATA_TIMING_UDMA,
f1bce7f8
TH		 469
470 /* ACPI constants */
471 ATA_ACPI_FILTER_SETXFER = 1 << 0,
472 ATA_ACPI_FILTER_LOCK = 1 << 1,
473 ATA_ACPI_FILTER_DIPM = 1 << 2,
fa5b561c
TH		 474 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */
475 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */
f1bce7f8
TH		 476
477 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER |
478 ATA_ACPI_FILTER_LOCK |
479 ATA_ACPI_FILTER_DIPM,
1da177e4
LT		 480};
481
7dc951ae
TH		 482enum ata_xfer_mask {
483 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1)
484 << ATA_SHIFT_PIO,
485 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1)
486 << ATA_SHIFT_MWDMA,
487 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1)
488 << ATA_SHIFT_UDMA,
489};
490
14be71f4 491enum hsm_task_states {
c56b14d2 492 HSM_ST_IDLE, /* no command on going */
71527647
AL		 493 HSM_ST_FIRST, /* (waiting the device to)
494 write CDB or first data block */
c56b14d2
AL		 495 HSM_ST, /* (waiting the device to) transfer data */
496 HSM_ST_LAST, /* (waiting the device to) complete command */
c56b14d2 497 HSM_ST_ERR, /* error */
1da177e4
LT		 498};
499
a7dac447 500enum ata_completion_errors {
11a56d24
TH		 501 AC_ERR_DEV = (1 << 0), /* device reported error */
502 AC_ERR_HSM = (1 << 1), /* host state machine violation */
503 AC_ERR_TIMEOUT = (1 << 2), /* timeout */
504 AC_ERR_MEDIA = (1 << 3), /* media error */
505 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */
506 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */
507 AC_ERR_SYSTEM = (1 << 6), /* system error */
508 AC_ERR_INVALID = (1 << 7), /* invalid argument */
509 AC_ERR_OTHER = (1 << 8), /* unknown */
55a8e2c8 510 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */
5335b729 511 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */
a7dac447
JG		 512};
513
c93b263e
TH		 514/*
515 * Link power management policy: If you alter this, you also need to
516 * alter libata-scsi.c (for the ascii descriptions)
517 */
518enum ata_lpm_policy {
519 ATA_LPM_UNKNOWN,
520 ATA_LPM_MAX_POWER,
521 ATA_LPM_MED_POWER,
522 ATA_LPM_MIN_POWER,
523};
524
6b7ae954
TH		 525enum ata_lpm_hints {
526 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */
527 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */
528};
529
1da177e4
LT		 530/* forward declarations */
531struct scsi_device;
532struct ata_port_operations;
533struct ata_port;
cc0680a5 534struct ata_link;
1da177e4
LT		 535struct ata_queued_cmd;
536
537/* typedefs */
77853bf2 538typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
cc0680a5
TH		 539typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
540typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
d4b2bab4 541 unsigned long deadline);
cc0680a5 542typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
1da177e4 543
ee959b00 544extern struct device_attribute dev_attr_link_power_management_policy;
45fabbb7 545extern struct device_attribute dev_attr_unload_heads;
18f7ba4c
KCA		 546extern struct device_attribute dev_attr_em_message_type;
547extern struct device_attribute dev_attr_em_message;
548extern struct device_attribute dev_attr_sw_activity;
549
550enum sw_activity {
551 OFF,
552 BLINK_ON,
553 BLINK_OFF,
554};
ca77329f 555
dc34e7e1
SS		 556struct ata_taskfile {
557 unsigned long flags; /* ATA_TFLAG_xxx */
558 u8 protocol; /* ATA_PROT_xxx */
559
560 u8 ctl; /* control reg */
561
562 u8 hob_feature; /* additional data */
563 u8 hob_nsect; /* to support LBA48 */
564 u8 hob_lbal;
565 u8 hob_lbam;
566 u8 hob_lbah;
567
568 u8 feature;
569 u8 nsect;
570 u8 lbal;
571 u8 lbam;
572 u8 lbah;
573
574 u8 device;
575
576 u8 command; /* IO operation */
8be5ad9a
MC		 577
578 u32 auxiliary; /* auxiliary field */
579 /* from SATA 3.1 and */
580 /* ATA-8 ACS-3 */
dc34e7e1
SS		 581};
582
127102ae 583#ifdef CONFIG_ATA_SFF
1da177e4 584struct ata_ioports {
0d5ff566
TH		 585 void __iomem *cmd_addr;
586 void __iomem *data_addr;
587 void __iomem *error_addr;
588 void __iomem *feature_addr;
589 void __iomem *nsect_addr;
590 void __iomem *lbal_addr;
591 void __iomem *lbam_addr;
592 void __iomem *lbah_addr;
593 void __iomem *device_addr;
594 void __iomem *status_addr;
595 void __iomem *command_addr;
596 void __iomem *altstatus_addr;
597 void __iomem *ctl_addr;
9a7780c9 598#ifdef CONFIG_ATA_BMDMA
0d5ff566 599 void __iomem *bmdma_addr;
9a7780c9 600#endif /* CONFIG_ATA_BMDMA */
0d5ff566 601 void __iomem *scr_addr;
1da177e4 602};
127102ae 603#endif /* CONFIG_ATA_SFF */
1da177e4 604
cca3974e 605struct ata_host {
1da177e4
LT		 606 spinlock_t lock;
607 struct device *dev;
0d5ff566 608 void __iomem * const *iomap;
1da177e4 609 unsigned int n_ports;
1a112d10 610 unsigned int n_tags; /* nr of NCQ tags */
1da177e4 611 void *private_data;
029cfd6b 612 struct ata_port_operations *ops;
5444a6f4 613 unsigned long flags;
c0c362b6
TH		 614
615 struct mutex eh_mutex;
616 struct task_struct *eh_owner;
617
032af1ce 618 struct ata_port *simplex_claimed; /* channel owning the DMA */
f0eb62b8 619 struct ata_port *ports[0];
1da177e4
LT		 620};
621
622struct ata_queued_cmd {
623 struct ata_port *ap;
624 struct ata_device *dev;
625
626 struct scsi_cmnd *scsicmd;
627 void (*scsidone)(struct scsi_cmnd *);
628
629 struct ata_taskfile tf;
630 u8 cdb[ATAPI_CDB_LEN];
631
632 unsigned long flags; /* ATA_QCFLAG_xxx */
633 unsigned int tag;
634 unsigned int n_elem;
5825627c 635 unsigned int orig_n_elem;
1da177e4
LT		 636
637 int dma_dir;
638
5a5dbd18 639 unsigned int sect_size;
cedc9a47 640
1da177e4 641 unsigned int nbytes;
aacda375 642 unsigned int extrabytes;
1da177e4
LT		 643 unsigned int curbytes;
644
1da177e4 645 struct scatterlist sgent;
1da177e4 646
ff2aeb1e 647 struct scatterlist *sg;
1da177e4 648
b34e9042
RK		 649 struct scatterlist *cursg;
650 unsigned int cursg_ofs;
651
a22e2eb0 652 unsigned int err_mask;
e61e0672 653 struct ata_taskfile result_tf;
1da177e4
LT		 654 ata_qc_cb_t complete_fn;
655
1da177e4 656 void *private_data;
1c50dc83 657 void *lldd_task;
1da177e4
LT		 658};
659
cca3974e 660struct ata_port_stats {
1da177e4
LT		 661 unsigned long unhandled_irq;
662 unsigned long idle_irq;
663 unsigned long rw_reqbuf;
664};
665
0c247c55 666struct ata_ering_entry {
3884f7b0 667 unsigned int eflags;
0c247c55
TH		 668 unsigned int err_mask;
669 u64 timestamp;
670};
671
672struct ata_ering {
673 int cursor;
674 struct ata_ering_entry ring[ATA_ERING_SIZE];
675};
676
1da177e4 677struct ata_device {
9af5c9c9 678 struct ata_link *link;
72fa4b74 679 unsigned int devno; /* 0 or 1 */
75683fe7 680 unsigned int horkage; /* List of broken features */
6866e7bc 681 unsigned long flags; /* ATA_DFLAG_xxx */
3edebac4 682 struct scsi_device *sdev; /* attached SCSI device */
95514fd8 683 void *private_data;
fafbae87 684#ifdef CONFIG_ATA_ACPI
398e0782 685 union acpi_object *gtf_cache;
110f66d2 686 unsigned int gtf_filter;
afe75951
AL		 687#endif
688#ifdef CONFIG_SATA_ZPODD
689 void *zpodd;
fafbae87 690#endif
d9027470 691 struct device tdev;
99cf610a 692 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */
72fa4b74 693 u64 n_sectors; /* size of device, if ATA */
5920dadf 694 u64 n_native_sectors; /* native size, if ATA */
1da177e4 695 unsigned int class; /* ATA_DEV_xxx */
45fabbb7 696 unsigned long unpark_deadline;
e0a71752 697
1da177e4
LT		 698 u8 pio_mode;
699 u8 dma_mode;
700 u8 xfer_mode;
701 unsigned int xfer_shift; /* ATA_SHIFT_xxx */
702
8cbd6df1
AL		 703 unsigned int multi_count; /* sectors count for
704 READ/WRITE MULTIPLE */
b00eec1d 705 unsigned int max_sectors; /* per-device max sectors */
6e7846e9 706 unsigned int cdb_len;
8bf62ece 707
acf356b1 708 /* per-dev xfer mask */
7dc951ae
TH		 709 unsigned long pio_mask;
710 unsigned long mwdma_mask;
711 unsigned long udma_mask;
acf356b1 712
8bf62ece
AL		 713 /* for CHS addressing */
714 u16 cylinders; /* Number of cylinders */
715 u16 heads; /* Number of heads */
716 u16 sectors; /* Number of sectors per track */
0c247c55 717
f7e98930
JG		 718 union {
719 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
720 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
721 };
99cf610a 722
803739d2
SH		 723 /* DEVSLP Timing Variables from Identify Device Data Log */
724 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE];
65fe1f0f 725
ed36911c
MC		 726 /* NCQ send and receive log subcommand support */
727 u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE];
728
99cf610a
TH		 729 /* error history */
730 int spdn_cnt;
731 /* ering is CLEAR_END, read comment above CLEAR_END */
732 struct ata_ering ering;
1da177e4
LT		 733};
734
99cf610a
TH		 735/* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are
736 * cleared to zero on ata_dev_init().
72fa4b74 737 */
99cf610a
TH		 738#define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
739#define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
72fa4b74 740
f3e81b19
TH		 741struct ata_eh_info {
742 struct ata_device *dev; /* offending device */
743 u32 serror; /* SError from LLDD */
744 unsigned int err_mask; /* port-wide err_mask */
745 unsigned int action; /* ATA_EH_* action mask */
47005f25 746 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */
f3e81b19 747 unsigned int flags; /* ATA_EHI_* flags */
abdda733 748
abdda733
TH		 749 unsigned int probe_mask;
750
f3e81b19
TH		 751 char desc[ATA_EH_DESC_LEN];
752 int desc_len;
753};
754
755struct ata_eh_context {
756 struct ata_eh_info i;
757 int tries[ATA_MAX_DEVICES];
87fbc5a0
TH		 758 int cmd_timeout_idx[ATA_MAX_DEVICES]
759 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE];
abdda733
TH		 760 unsigned int classes[ATA_MAX_DEVICES];
761 unsigned int did_probe_mask;
45fabbb7 762 unsigned int unloaded_mask;
00115e0f
TH		 763 unsigned int saved_ncq_enabled;
764 u8 saved_xfer_mode[ATA_MAX_DEVICES];
0a2c0f56
TH		 765 /* timestamp for the last reset attempt or success */
766 unsigned long last_reset;
f3e81b19
TH		 767};
768
64578a3d
TH		 769struct ata_acpi_drive
770{
771 u32 pio;
772 u32 dma;
773} __packed;
774
775struct ata_acpi_gtm {
776 struct ata_acpi_drive drive[2];
777 u32 flags;
778} __packed;
779
9af5c9c9
TH		 780struct ata_link {
781 struct ata_port *ap;
8989805d 782 int pmp; /* port multiplier port # */
9af5c9c9 783
d9027470 784 struct device tdev;
9af5c9c9
TH		 785 unsigned int active_tag; /* active tag on this link */
786 u32 sactive; /* active NCQ commands */
787
0c88758b
TH		 788 unsigned int flags; /* ATA_LFLAG_xxx */
789
d127ea7b 790 u32 saved_scontrol; /* SControl on probe */
9af5c9c9
TH		 791 unsigned int hw_sata_spd_limit;
792 unsigned int sata_spd_limit;
793 unsigned int sata_spd; /* current SATA PHY speed */
6b7ae954 794 enum ata_lpm_policy lpm_policy;
9af5c9c9
TH		 795
796 /* record runtime error info, protected by host_set lock */
797 struct ata_eh_info eh_info;
798 /* EH context */
799 struct ata_eh_context eh_context;
800
801 struct ata_device device[ATA_MAX_DEVICES];
09c5b480
GM		 802
803 unsigned long last_lpm_change; /* when last LPM change happened */
9af5c9c9 804};
d9027470
GG		 805#define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
806#define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
9af5c9c9 807
1da177e4 808struct ata_port {
cca3974e 809 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */
029cfd6b 810 struct ata_port_operations *ops;
ba6a1308 811 spinlock_t *lock;
e3cf95dd
AC		 812 /* Flags owned by the EH context. Only EH should touch these once the
813 port is active */
1da177e4 814 unsigned long flags; /* ATA_FLAG_xxx */
e3cf95dd 815 /* Flags that change dynamically, protected by ap->lock */
b51e9e5d 816 unsigned int pflags; /* ATA_PFLAG_xxx */
44877b4e 817 unsigned int print_id; /* user visible unique port ID */
e628dc99 818 unsigned int local_port_no; /* host local port num */
44877b4e 819 unsigned int port_no; /* 0 based port no. inside the host */
1da177e4 820
127102ae 821#ifdef CONFIG_ATA_SFF
1da177e4 822 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */
1da177e4
LT		 823 u8 ctl; /* cache of ATA control register */
824 u8 last_ctl; /* Cache last written value */
ea3c6450 825 struct ata_link* sff_pio_task_link; /* link currently used */
c429137a 826 struct delayed_work sff_pio_task;
9a7780c9 827#ifdef CONFIG_ATA_BMDMA
f60d7011
TH		 828 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */
829 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */
9a7780c9 830#endif /* CONFIG_ATA_BMDMA */
5fe7454a
TH		 831#endif /* CONFIG_ATA_SFF */
832
1da177e4
LT		 833 unsigned int pio_mask;
834 unsigned int mwdma_mask;
835 unsigned int udma_mask;
836 unsigned int cbl; /* cable type; ATA_CBL_xxx */
1da177e4
LT		 837
838 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE];
12cb5ce1 839 unsigned long sas_tag_allocated; /* for sas tag allocation only */
dedaf2b0 840 unsigned int qc_active;
da917d69 841 int nr_active_links; /* #links with active qcs */
12cb5ce1 842 unsigned int sas_last_tag; /* track next tag hw expects */
dedaf2b0 843
b1c72916
TH		 844 struct ata_link link; /* host default link */
845 struct ata_link *slave_link; /* see ata_slave_link_init() */
1da177e4 846
8989805d
TH		 847 int nr_pmp_links; /* nr of available PMP links */
848 struct ata_link *pmp_link; /* array of PMP links */
da917d69 849 struct ata_link *excl_link; /* for PMP qc exclusion */
8989805d 850
cca3974e
JG		 851 struct ata_port_stats stats;
852 struct ata_host *host;
2f1f610b 853 struct device *dev;
d9027470 854 struct device tdev;
1da177e4 855
ad72cf98 856 struct mutex scsi_scan_mutex;
52bad64d 857 struct delayed_work hotplug_task;
3b01b8af 858 struct work_struct scsi_rescan_task;
86e45b6b 859
14be71f4 860 unsigned int hsm_task_state;
1da177e4 861
bfd60579 862 u32 msg_enable;
a72ec4ce 863 struct list_head eh_done_q;
c6cf9e99 864 wait_queue_head_t eh_wait_q;
a1e10f7e 865 int eh_tries;
45fabbb7 866 struct completion park_req_pending;
bfd60579 867
500530f6 868 pm_message_t pm_mesg;
6b7ae954 869 enum ata_lpm_policy target_lpm_policy;
500530f6 870
5ddf24c5
TH		 871 struct timer_list fastdrain_timer;
872 unsigned long fastdrain_cnt;
873
18f7ba4c 874 int em_message_type;
1da177e4 875 void *private_data;
fe635c7e 876
fafbae87 877#ifdef CONFIG_ATA_ACPI
c05e6ff0 878 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */
fafbae87 879#endif
84bda12a
TH		 880 /* owned by EH */
881 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
1da177e4
LT		 882};
883
029cfd6b
TH		 884/* The following initializer overrides a method to NULL whether one of
885 * its parent has the method defined or not. This is equivalent to
886 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant
887 * expression and thus can't be used as an initializer.
888 */
889#define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
890
1da177e4 891struct ata_port_operations {
c1bc899f
TH		 892 /*
893 * Command execution
894 */
895 int (*qc_defer)(struct ata_queued_cmd *qc);
896 int (*check_atapi_dma)(struct ata_queued_cmd *qc);
897 void (*qc_prep)(struct ata_queued_cmd *qc);
898 unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
22183bf5 899 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc);
1da177e4 900
c1bc899f
TH		 901 /*
902 * Configuration and exception handling
903 */
904 int (*cable_detect)(struct ata_port *ap);
905 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask);
906 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
907 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
908 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
963e4975 909 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id);
1da177e4 910
c1bc899f 911 void (*dev_config)(struct ata_device *dev);
1da177e4 912
c1bc899f
TH		 913 void (*freeze)(struct ata_port *ap);
914 void (*thaw)(struct ata_port *ap);
a1efdaba
TH		 915 ata_prereset_fn_t prereset;
916 ata_reset_fn_t softreset;
917 ata_reset_fn_t hardreset;
918 ata_postreset_fn_t postreset;
919 ata_prereset_fn_t pmp_prereset;
920 ata_reset_fn_t pmp_softreset;
921 ata_reset_fn_t pmp_hardreset;
922 ata_postreset_fn_t pmp_postreset;
c1bc899f 923 void (*error_handler)(struct ata_port *ap);
c96f1732 924 void (*lost_interrupt)(struct ata_port *ap);
c1bc899f 925 void (*post_internal_cmd)(struct ata_queued_cmd *qc);
e4a9c373
DW		 926 void (*sched_eh)(struct ata_port *ap);
927 void (*end_eh)(struct ata_port *ap);
c1bc899f
TH		 928
929 /*
930 * Optional features
931 */
82ef04fb
TH		 932 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val);
933 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val);
c1bc899f
TH		 934 void (*pmp_attach)(struct ata_port *ap);
935 void (*pmp_detach)(struct ata_port *ap);
6b7ae954
TH		 936 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy,
937 unsigned hints);
c1bc899f
TH		 938
939 /*
940 * Start, stop, suspend and resume
941 */
942 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg);
943 int (*port_resume)(struct ata_port *ap);
944 int (*port_start)(struct ata_port *ap);
945 void (*port_stop)(struct ata_port *ap);
946 void (*host_stop)(struct ata_host *host);
947
127102ae 948#ifdef CONFIG_ATA_SFF
c1bc899f
TH		 949 /*
950 * SFF / taskfile oriented ops
951 */
5682ed33 952 void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
41dec29b 953 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl);
5682ed33
TH		 954 u8 (*sff_check_status)(struct ata_port *ap);
955 u8 (*sff_check_altstatus)(struct ata_port *ap);
956 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
957 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
958 void (*sff_exec_command)(struct ata_port *ap,
959 const struct ata_taskfile *tf);
960 unsigned int (*sff_data_xfer)(struct ata_device *dev,
961 unsigned char *buf, unsigned int buflen, int rw);
e42a542b 962 void (*sff_irq_on)(struct ata_port *);
27943620 963 bool (*sff_irq_check)(struct ata_port *);
5682ed33 964 void (*sff_irq_clear)(struct ata_port *);
8244cd05 965 void (*sff_drain_fifo)(struct ata_queued_cmd *qc);
5682ed33 966
9a7780c9 967#ifdef CONFIG_ATA_BMDMA
c1bc899f
TH		 968 void (*bmdma_setup)(struct ata_queued_cmd *qc);
969 void (*bmdma_start)(struct ata_queued_cmd *qc);
970 void (*bmdma_stop)(struct ata_queued_cmd *qc);
971 u8 (*bmdma_status)(struct ata_port *ap);
9a7780c9 972#endif /* CONFIG_ATA_BMDMA */
127102ae 973#endif /* CONFIG_ATA_SFF */
c1bc899f 974
18f7ba4c
KCA		 975 ssize_t (*em_show)(struct ata_port *ap, char *buf);
976 ssize_t (*em_store)(struct ata_port *ap, const char *message,
977 size_t size);
978 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf);
979 ssize_t (*sw_activity_store)(struct ata_device *dev,
980 enum sw_activity val);
439d7a35
ML		 981 ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state,
982 ssize_t size);
983
c1bc899f
TH		 984 /*
985 * Obsolete
9ec957f2 986 */
c1bc899f
TH		 987 void (*phy_reset)(struct ata_port *ap);
988 void (*eng_timeout)(struct ata_port *ap);
029cfd6b
TH		 989
990 /*
991 * ->inherits must be the last field and all the preceding
992 * fields must be pointers.
993 */
994 const struct ata_port_operations *inherits;
1da177e4
LT		 995};
996
997struct ata_port_info {
cca3974e 998 unsigned long flags;
0c88758b 999 unsigned long link_flags;
1da177e4
LT		 1000 unsigned long pio_mask;
1001 unsigned long mwdma_mask;
1002 unsigned long udma_mask;
029cfd6b 1003 struct ata_port_operations *port_ops;
e99f8b5e 1004 void *private_data;
1da177e4
LT		 1005};
1006
452503f9
AC		 1007struct ata_timing {
1008 unsigned short mode; /* ATA mode */
1009 unsigned short setup; /* t1 */
1010 unsigned short act8b; /* t2 for 8-bit I/O */
1011 unsigned short rec8b; /* t2i for 8-bit I/O */
1012 unsigned short cyc8b; /* t0 for 8-bit I/O */
1013 unsigned short active; /* t2 or tD */
1014 unsigned short recover; /* t2i or tK */
3ada9c12 1015 unsigned short dmack_hold; /* tj */
452503f9
AC		 1016 unsigned short cycle; /* t0 */
1017 unsigned short udma; /* t2CYCTYP/2 */
1018};
1019
624d5c51
TH		 1020/*
1021 * Core layer - drivers/ata/libata-core.c
1022 */
e9c83914
TH		 1023extern const unsigned long sata_deb_timing_normal[];
1024extern const unsigned long sata_deb_timing_hotplug[];
1025extern const unsigned long sata_deb_timing_long[];
1026
029cfd6b 1027extern struct ata_port_operations ata_dummy_port_ops;
21b0ad4f 1028extern const struct ata_port_info ata_dummy_port_info;
dd5b06c4 1029
dc34e7e1
SS		 1030/*
1031 * protocol tests
1032 */
1033static inline unsigned int ata_prot_flags(u8 prot)
1034{
1035 switch (prot) {
1036 case ATA_PROT_NODATA:
1037 return 0;
1038 case ATA_PROT_PIO:
1039 return ATA_PROT_FLAG_PIO;
1040 case ATA_PROT_DMA:
1041 return ATA_PROT_FLAG_DMA;
1042 case ATA_PROT_NCQ:
1043 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
1044 case ATAPI_PROT_NODATA:
1045 return ATA_PROT_FLAG_ATAPI;
1046 case ATAPI_PROT_PIO:
1047 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO;
1048 case ATAPI_PROT_DMA:
1049 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA;
1050 }
1051 return 0;
1052}
1053
1054static inline int ata_is_atapi(u8 prot)
1055{
1056 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI;
1057}
1058
1059static inline int ata_is_nodata(u8 prot)
1060{
1061 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA);
1062}
1063
1064static inline int ata_is_pio(u8 prot)
1065{
1066 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;
1067}
1068
1069static inline int ata_is_dma(u8 prot)
1070{
1071 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA;
1072}
1073
1074static inline int ata_is_ncq(u8 prot)
1075{
1076 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ;
1077}
1078
1079static inline int ata_is_data(u8 prot)
1080{
1081 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA;
1082}
1083
1084static inline int is_multi_taskfile(struct ata_taskfile *tf)
1085{
1086 return (tf->command == ATA_CMD_READ_MULTI) ||
1087 (tf->command == ATA_CMD_WRITE_MULTI) ||
1088 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
1089 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
1090 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
1091}
1092
e9c83914
TH		 1093static inline const unsigned long *
1094sata_ehc_deb_timing(struct ata_eh_context *ehc)
1095{
1096 if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
1097 return sata_deb_timing_hotplug;
1098 else
1099 return sata_deb_timing_normal;
1100}
d7bb4cc7 1101
dd5b06c4
TH		 1102static inline int ata_port_is_dummy(struct ata_port *ap)
1103{
1104 return ap->ops == &ata_dummy_port_ops;
1105}
1106
936fd732 1107extern int sata_set_spd(struct ata_link *link);
0aa1113d 1108extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
aa2731ad
TH		 1109extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
1110 int (*check_ready)(struct ata_link *link));
936fd732
TH		 1111extern int sata_link_debounce(struct ata_link *link,
1112 const unsigned long *params, unsigned long deadline);
1113extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
1114 unsigned long deadline);
1152b261
TH		 1115extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
1116 bool spm_wakeup);
cc0680a5 1117extern int sata_link_hardreset(struct ata_link *link,
9dadd45b
TH		 1118 const unsigned long *timing, unsigned long deadline,
1119 bool *online, int (*check_ready)(struct ata_link *));
57c9efdf
TH		 1120extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
1121 unsigned long deadline);
203c75b8 1122extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
2855568b 1123
f3187195 1124extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
f5cda257
TH		 1125extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
1126 const struct ata_port_info * const * ppi, int n_ports);
b1c72916 1127extern int ata_slave_link_init(struct ata_port *ap);
ecef7253 1128extern int ata_host_start(struct ata_host *host);
f3187195
TH		 1129extern int ata_host_register(struct ata_host *host,
1130 struct scsi_host_template *sht);
f5cda257
TH		 1131extern int ata_host_activate(struct ata_host *host, int irq,
1132 irq_handler_t irq_handler, unsigned long irq_flags,
1133 struct scsi_host_template *sht);
0529c159 1134extern void ata_host_detach(struct ata_host *host);
8d8e7d13 1135extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *);
193515d5 1136extern int ata_scsi_detect(struct scsi_host_template *sht);
1da177e4 1137extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
f281233d 1138extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd);
94be9a58
JG		 1139extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev,
1140 int cmd, void __user *arg);
80289167 1141extern void ata_sas_port_destroy(struct ata_port *);
cca3974e 1142extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
80289167 1143 struct ata_port_info *, struct Scsi_Host *);
b2024459
DW		 1144extern void ata_sas_async_probe(struct ata_port *ap);
1145extern int ata_sas_sync_probe(struct ata_port *ap);
80289167
BK		 1146extern int ata_sas_port_init(struct ata_port *);
1147extern int ata_sas_port_start(struct ata_port *ap);
1148extern void ata_sas_port_stop(struct ata_port *ap);
1149extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
b27dcfb0 1150extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap);
936fd732
TH		 1151extern int sata_scr_valid(struct ata_link *link);
1152extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
1153extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
1154extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
b5b3fa38
TH		 1155extern bool ata_link_online(struct ata_link *link);
1156extern bool ata_link_offline(struct ata_link *link);
6ffa01d8 1157#ifdef CONFIG_PM
cca3974e
JG		 1158extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
1159extern void ata_host_resume(struct ata_host *host);
bc6e7c4b
DW		 1160extern void ata_sas_port_suspend(struct ata_port *ap);
1161extern void ata_sas_port_resume(struct ata_port *ap);
2fcbdcb4 1162#else
bc6e7c4b 1163static inline void ata_sas_port_suspend(struct ata_port *ap)
2fcbdcb4 1164{
2fcbdcb4 1165}
a5a65699
RD		 1166static inline void ata_sas_port_resume(struct ata_port *ap)
1167{
1168}
6ffa01d8 1169#endif
67846b30 1170extern int ata_ratelimit(void);
97750ceb
TH		 1171extern void ata_msleep(struct ata_port *ap, unsigned int msecs);
1172extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask,
1173 u32 val, unsigned long interval, unsigned long timeout);
436d34b3 1174extern int atapi_cmd_type(u8 opcode);
9977126c
TH		 1175extern void ata_tf_to_fis(const struct ata_taskfile *tf,
1176 u8 pmp, int is_cmd, u8 *fis);
057ace5e 1177extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
7dc951ae
TH		 1178extern unsigned long ata_pack_xfermask(unsigned long pio_mask,
1179 unsigned long mwdma_mask, unsigned long udma_mask);
1180extern void ata_unpack_xfermask(unsigned long xfer_mask,
1181 unsigned long *pio_mask, unsigned long *mwdma_mask,
1182 unsigned long *udma_mask);
1183extern u8 ata_xfer_mask2mode(unsigned long xfer_mask);
1184extern unsigned long ata_xfer_mode2mask(u8 xfer_mode);
1185extern int ata_xfer_mode2shift(unsigned long xfer_mode);
1186extern const char *ata_mode_string(unsigned long xfer_mask);
1187extern unsigned long ata_id_xfermask(const u16 *id);
31cc23b3 1188extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
e46834cd 1189extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);
1da177e4
LT		 1190extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
1191 unsigned int n_elem);
057ace5e 1192extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
10305f0f 1193extern void ata_dev_disable(struct ata_device *adev);
6a62a04d
TH		 1194extern void ata_id_string(const u16 *id, unsigned char *s,
1195 unsigned int ofs, unsigned int len);
1196extern void ata_id_c_string(const u16 *id, unsigned char *s,
1197 unsigned int ofs, unsigned int len);
963e4975
AC		 1198extern unsigned int ata_do_dev_read_id(struct ata_device *dev,
1199 struct ata_taskfile *tf, u16 *id);
f686bcb8 1200extern void ata_qc_complete(struct ata_queued_cmd *qc);
79f97dad 1201extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active);
b27dcfb0 1202extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd);
1da177e4
LT		 1203extern int ata_std_bios_param(struct scsi_device *sdev,
1204 struct block_device *bdev,
1205 sector_t capacity, int geom[]);
d8d9129e 1206extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
1da177e4 1207extern int ata_scsi_slave_config(struct scsi_device *sdev);
83c47bcb 1208extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
a6e6ce8e 1209extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
db5ed4df 1210 int queue_depth);
f6e67035 1211extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev,
db5ed4df 1212 int queue_depth);
3373efd8 1213extern struct ata_device *ata_dev_pair(struct ata_device *adev);
0260731f 1214extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
0e0b494c
JB		 1215extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap);
1216extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q);
8393b811 1217extern bool sata_lpm_ignore_phy_events(struct ata_link *link);
1da177e4 1218
be0d18df
AC		 1219extern int ata_cable_40wire(struct ata_port *ap);
1220extern int ata_cable_80wire(struct ata_port *ap);
1221extern int ata_cable_sata(struct ata_port *ap);
c88f90c3 1222extern int ata_cable_ignore(struct ata_port *ap);
be0d18df
AC		 1223extern int ata_cable_unknown(struct ata_port *ap);
1224
624d5c51 1225/* Timing helpers */
1bc4ccff 1226extern unsigned int ata_pio_need_iordy(const struct ata_device *);
6357357c 1227extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
452503f9
AC		 1228extern int ata_timing_compute(struct ata_device *, unsigned short,
1229 struct ata_timing *, int, int);
1230extern void ata_timing_merge(const struct ata_timing *,
1231 const struct ata_timing *, struct ata_timing *,
1232 unsigned int);
a0f79b92 1233extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);
452503f9 1234
624d5c51
TH		 1235/* PCI */
1236#ifdef CONFIG_PCI
1237struct pci_dev;
1238
1239struct pci_bits {
1240 unsigned int reg; /* PCI config register to read */
1241 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
1242 unsigned long mask;
1243 unsigned long val;
452503f9
AC		 1244};
1245
624d5c51
TH		 1246extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
1247extern void ata_pci_remove_one(struct pci_dev *pdev);
1248
1249#ifdef CONFIG_PM
1250extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
1251extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
1252extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
1253extern int ata_pci_device_resume(struct pci_dev *pdev);
1254#endif /* CONFIG_PM */
1255#endif /* CONFIG_PCI */
1256
b7db04d9
BN		 1257struct platform_device;
1258
1259extern int ata_platform_remove_one(struct platform_device *pdev);
1260
624d5c51
TH		 1261/*
1262 * ACPI - drivers/ata/libata-acpi.c
1263 */
e1ddb4b6 1264#ifdef CONFIG_ATA_ACPI
c05e6ff0
TH		 1265static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1266{
1267 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
1268 return &ap->__acpi_init_gtm;
1269 return NULL;
1270}
0d02f0b2
TH		 1271int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
1272int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
7c77fa4d
TH		 1273unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev,
1274 const struct ata_acpi_gtm *gtm);
021ee9a6 1275int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm);
e1ddb4b6 1276#else
c05e6ff0
TH		 1277static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1278{
1279 return NULL;
1280}
7c77fa4d
TH		 1281
1282static inline int ata_acpi_stm(const struct ata_port *ap,
1283 struct ata_acpi_gtm *stm)
1284{
1285 return -ENOSYS;
1286}
1287
1288static inline int ata_acpi_gtm(const struct ata_port *ap,
1289 struct ata_acpi_gtm *stm)
1290{
1291 return -ENOSYS;
1292}
1293
1294static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
1295 const struct ata_acpi_gtm *gtm)
1296{
1297 return 0;
1298}
021ee9a6
TH		 1299
1300static inline int ata_acpi_cbl_80wire(struct ata_port *ap,
1301 const struct ata_acpi_gtm *gtm)
1302{
1303 return 0;
1304}
e1ddb4b6 1305#endif
1da177e4 1306
ece1d636 1307/*
624d5c51 1308 * EH - drivers/ata/libata-eh.c
ece1d636 1309 */
7b70fc03 1310extern void ata_port_schedule_eh(struct ata_port *ap);
81c757bc 1311extern void ata_port_wait_eh(struct ata_port *ap);
dbd82616 1312extern int ata_link_abort(struct ata_link *link);
7b70fc03 1313extern int ata_port_abort(struct ata_port *ap);
e3180499 1314extern int ata_port_freeze(struct ata_port *ap);
7d77b247 1315extern int sata_async_notification(struct ata_port *ap);
e3180499
TH		 1316
1317extern void ata_eh_freeze_port(struct ata_port *ap);
1318extern void ata_eh_thaw_port(struct ata_port *ap);
7b70fc03 1319
ece1d636
TH		 1320extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
1321extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
10acf3b0 1322extern void ata_eh_analyze_ncq_error(struct ata_link *link);
ece1d636 1323
f5914a46
TH		 1324extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
1325 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
1326 ata_postreset_fn_t postreset);
a1efdaba 1327extern void ata_std_error_handler(struct ata_port *ap);
e4a9c373
DW		 1328extern void ata_std_sched_eh(struct ata_port *ap);
1329extern void ata_std_end_eh(struct ata_port *ap);
8a745f1f 1330extern int ata_link_nr_enabled(struct ata_link *link);
022bdb07 1331
68d1d07b
TH		 1332/*
1333 * Base operations to inherit from and initializers for sht
1334 *
1335 * Operations
1336 *
1337 * base : Common to all libata drivers.
1338 * sata : SATA controllers w/ native interface.
1339 * pmp : SATA controllers w/ PMP support.
1340 * sff : SFF ATA controllers w/o BMDMA support.
1341 * bmdma : SFF ATA controllers w/ BMDMA support.
1342 *
1343 * sht initializers
1344 *
1345 * BASE : Common to all libata drivers. The user must set
1346 * sg_tablesize and dma_boundary.
1347 * PIO : SFF ATA controllers w/ only PIO support.
1348 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and
1349 * dma_boundary are set to BMDMA limits.
1350 * NCQ : SATA controllers supporting NCQ. The user must set
1351 * sg_tablesize, dma_boundary and can_queue.
1352 */
1353extern const struct ata_port_operations ata_base_port_ops;
1354extern const struct ata_port_operations sata_port_ops;
45fabbb7 1355extern struct device_attribute *ata_common_sdev_attrs[];
68d1d07b 1356
018d5ef2
AM		 1357/*
1358 * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated
1359 * by the edge drivers. Because the 'module' field of sht must be the
1360 * edge driver's module reference, otherwise the driver can be unloaded
1361 * even if the scsi_device is being accessed.
1362 */
68d1d07b
TH		 1363#define ATA_BASE_SHT(drv_name) \
1364 .module = THIS_MODULE, \
1365 .name = drv_name, \
1366 .ioctl = ata_scsi_ioctl, \
1367 .queuecommand = ata_scsi_queuecmd, \
1368 .can_queue = ATA_DEF_QUEUE, \
12cb5ce1 1369 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \
68d1d07b 1370 .this_id = ATA_SHT_THIS_ID, \
68d1d07b
TH		 1371 .emulated = ATA_SHT_EMULATED, \
1372 .use_clustering = ATA_SHT_USE_CLUSTERING, \
1373 .proc_name = drv_name, \
1374 .slave_configure = ata_scsi_slave_config, \
1375 .slave_destroy = ata_scsi_slave_destroy, \
45fabbb7 1376 .bios_param = ata_std_bios_param, \
d8d9129e 1377 .unlock_native_capacity = ata_scsi_unlock_native_capacity, \
45fabbb7 1378 .sdev_attrs = ata_common_sdev_attrs
68d1d07b 1379
68d1d07b
TH		 1380#define ATA_NCQ_SHT(drv_name) \
1381 ATA_BASE_SHT(drv_name), \
1382 .change_queue_depth = ata_scsi_change_queue_depth
1383
071f44b1
TH		 1384/*
1385 * PMP helpers
1386 */
88fcd562 1387#ifdef CONFIG_SATA_PMP
071f44b1
TH		 1388static inline bool sata_pmp_supported(struct ata_port *ap)
1389{
1390 return ap->flags & ATA_FLAG_PMP;
1391}
1392
1393static inline bool sata_pmp_attached(struct ata_port *ap)
1394{
1395 return ap->nr_pmp_links != 0;
1396}
1397
1398static inline int ata_is_host_link(const struct ata_link *link)
1399{
b1c72916 1400 return link == &link->ap->link || link == link->ap->slave_link;
071f44b1 1401}
88fcd562
TH		 1402#else /* CONFIG_SATA_PMP */
1403static inline bool sata_pmp_supported(struct ata_port *ap)
1404{
1405 return false;
1406}
1407
1408static inline bool sata_pmp_attached(struct ata_port *ap)
1409{
1410 return false;
1411}
1412
1413static inline int ata_is_host_link(const struct ata_link *link)
1414{
1415 return 1;
1416}
1417#endif /* CONFIG_SATA_PMP */
071f44b1
TH		 1418
1419static inline int sata_srst_pmp(struct ata_link *link)
1420{
1421 if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
1422 return SATA_PMP_CTRL_PORT;
1423 return link->pmp;
1424}
1425
61440db6
TH		 1426/*
1427 * printk helpers
1428 */
b9075fa9 1429__printf(3, 4)
d7bead1b
JP		 1430void ata_port_printk(const struct ata_port *ap, const char *level,
1431 const char *fmt, ...);
b9075fa9 1432__printf(3, 4)
d7bead1b
JP		 1433void ata_link_printk(const struct ata_link *link, const char *level,
1434 const char *fmt, ...);
b9075fa9 1435__printf(3, 4)
d7bead1b
JP		 1436void ata_dev_printk(const struct ata_device *dev, const char *level,
1437 const char *fmt, ...);
a9a79dfe
JP		 1438
1439#define ata_port_err(ap, fmt, ...) \
1440 ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__)
1441#define ata_port_warn(ap, fmt, ...) \
1442 ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__)
1443#define ata_port_notice(ap, fmt, ...) \
1444 ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__)
1445#define ata_port_info(ap, fmt, ...) \
1446 ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__)
1447#define ata_port_dbg(ap, fmt, ...) \
1448 ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__)
1449
1450#define ata_link_err(link, fmt, ...) \
1451 ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__)
1452#define ata_link_warn(link, fmt, ...) \
1453 ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__)
1454#define ata_link_notice(link, fmt, ...) \
1455 ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__)
1456#define ata_link_info(link, fmt, ...) \
1457 ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__)
1458#define ata_link_dbg(link, fmt, ...) \
1459 ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__)
1460
1461#define ata_dev_err(dev, fmt, ...) \
1462 ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__)
1463#define ata_dev_warn(dev, fmt, ...) \
1464 ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__)
1465#define ata_dev_notice(dev, fmt, ...) \
1466 ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__)
1467#define ata_dev_info(dev, fmt, ...) \
1468 ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__)
1469#define ata_dev_dbg(dev, fmt, ...) \
1470 ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__)
1da177e4 1471
06296a1e
JP		 1472void ata_print_version(const struct device *dev, const char *version);
1473
f3e81b19
TH		 1474/*
1475 * ata_eh_info helpers
1476 */
b9075fa9
JP		 1477extern __printf(2, 3)
1478void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1479extern __printf(2, 3)
1480void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
b64bbc39 1481extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
f3e81b19 1482
c0b6c037
TH		 1483static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
1484{
b558eddd 1485 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
f8f1e1cc 1486 ehi->flags |= ATA_EHI_HOTPLUGGED;
b558eddd 1487 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;
c0b6c037
TH		 1488 ehi->err_mask |= AC_ERR_ATA_BUS;
1489}
1490
cbcdd875
TH		 1491/*
1492 * port description helpers
1493 */
b9075fa9
JP		 1494extern __printf(2, 3)
1495void ata_port_desc(struct ata_port *ap, const char *fmt, ...);
cbcdd875
TH		 1496#ifdef CONFIG_PCI
1497extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
1498 const char *name);
1499#endif
1500
1da177e4
LT		 1501static inline unsigned int ata_tag_valid(unsigned int tag)
1502{
1503 return (tag < ATA_MAX_QUEUE) ? 1 : 0;
1504}
1505
2ab7db1f
TH		 1506static inline unsigned int ata_tag_internal(unsigned int tag)
1507{
83c063dd 1508 return tag == ATA_TAG_INTERNAL;
2ab7db1f
TH		 1509}
1510
5806db22
TH		 1511/*
1512 * device helpers
1513 */
e1211e3f 1514static inline unsigned int ata_class_enabled(unsigned int class)
597afd21 1515{
e0a71752 1516 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
9162c657
HR		 1517 class == ATA_DEV_PMP || class == ATA_DEV_SEMB ||
1518 class == ATA_DEV_ZAC;
597afd21
TH		 1519}
1520
e1211e3f 1521static inline unsigned int ata_class_disabled(unsigned int class)
1da177e4 1522{
e0a71752
TH		 1523 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
1524 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP;
e1211e3f
TH		 1525}
1526
002c8054
TH		 1527static inline unsigned int ata_class_absent(unsigned int class)
1528{
1529 return !ata_class_enabled(class) && !ata_class_disabled(class);
1530}
1531
e1211e3f
TH		 1532static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
1533{
1534 return ata_class_enabled(dev->class);
1535}
1536
1537static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
1538{
1539 return ata_class_disabled(dev->class);
1da177e4
LT		 1540}
1541
002c8054
TH		 1542static inline unsigned int ata_dev_absent(const struct ata_device *dev)
1543{
1544 return ata_class_absent(dev->class);
1545}
1546
5806db22 1547/*
f58229f8 1548 * link helpers
5806db22 1549 */
f58229f8 1550static inline int ata_link_max_devices(const struct ata_link *link)
5806db22 1551{
8989805d 1552 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS)
5806db22
TH		 1553 return 2;
1554 return 1;
1555}
1556
da917d69
TH		 1557static inline int ata_link_active(struct ata_link *link)
1558{
1559 return ata_tag_valid(link->active_tag) || link->sactive;
1560}
1561
1eca4365
TH		 1562/*
1563 * Iterators
1564 *
1565 * ATA_LITER_* constants are used to select link iteration mode and
1566 * ATA_DITER_* device iteration mode.
1567 *
1568 * For a custom iteration directly using ata_{link|dev}_next(), if
1569 * @link or @dev, respectively, is NULL, the first element is
1570 * returned. @dev and @link can be any valid device or link and the
1571 * next element according to the iteration mode will be returned.
1572 * After the last element, NULL is returned.
1573 */
1574enum ata_link_iter_mode {
1575 ATA_LITER_EDGE, /* if present, PMP links only; otherwise,
1576 * host link. no slave link */
1577 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */
1578 ATA_LITER_PMP_FIRST, /* PMP links followed by host link,
1579 * slave link still comes after host link */
1580};
1581
1582enum ata_dev_iter_mode {
1583 ATA_DITER_ENABLED,
1584 ATA_DITER_ENABLED_REVERSE,
1585 ATA_DITER_ALL,
1586 ATA_DITER_ALL_REVERSE,
1587};
1588
1589extern struct ata_link *ata_link_next(struct ata_link *link,
1590 struct ata_port *ap,
1591 enum ata_link_iter_mode mode);
1592
1593extern struct ata_device *ata_dev_next(struct ata_device *dev,
1594 struct ata_link *link,
1595 enum ata_dev_iter_mode mode);
1596
1597/*
1598 * Shortcut notation for iterations
1599 *
1600 * ata_for_each_link() iterates over each link of @ap according to
1601 * @mode. @link points to the current link in the loop. @link is
1602 * NULL after loop termination. ata_for_each_dev() works the same way
1603 * except that it iterates over each device of @link.
1604 *
1605 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be
1606 * specified when using the following shorthand notations. Only the
1607 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be
1608 * specified. This not only increases brevity but also makes it
1609 * impossible to use ATA_LITER_* for device iteration or vice-versa.
1610 */
1611#define ata_for_each_link(link, ap, mode) \
1612 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1613 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1614
1615#define ata_for_each_dev(dev, link, mode) \
1616 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1617 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
5806db22 1618
6d1245bf
TH		 1619/**
1620 * ata_ncq_enabled - Test whether NCQ is enabled
1621 * @dev: ATA device to test for
1622 *
1623 * LOCKING:
1624 * spin_lock_irqsave(host lock)
1625 *
1626 * RETURNS:
1627 * 1 if NCQ is enabled for @dev, 0 otherwise.
1628 */
1629static inline int ata_ncq_enabled(struct ata_device *dev)
1630{
1631 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF |
1632 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
1633}
0baab86b 1634
87fb6c31
MC		 1635static inline bool ata_fpdma_dsm_supported(struct ata_device *dev)
1636{
1637 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1638 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] &
1639 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM);
1640}
1641
1da177e4
LT		 1642static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
1643{
1644 qc->tf.ctl |= ATA_NIEN;
1645}
1646
f69499f4
TH		 1647static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
1648 unsigned int tag)
1da177e4
LT		 1649{
1650 if (likely(ata_tag_valid(tag)))
1651 return &ap->qcmd[tag];
1652 return NULL;
1653}
1654
f69499f4
TH		 1655static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
1656 unsigned int tag)
1657{
1658 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
1659
1660 if (unlikely(!qc) || !ap->ops->error_handler)
1661 return qc;
1662
1663 if ((qc->flags & (ATA_QCFLAG_ACTIVE |
1664 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE)
1665 return qc;
1666
1667 return NULL;
1668}
1669
aacda375
TH		 1670static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc)
1671{
1672 return qc->nbytes - min(qc->extrabytes, qc->nbytes);
1673}
1674
3373efd8 1675static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
1da177e4
LT		 1676{
1677 memset(tf, 0, sizeof(*tf));
1678
5fe7454a 1679#ifdef CONFIG_ATA_SFF
9af5c9c9 1680 tf->ctl = dev->link->ap->ctl;
5fe7454a
TH		 1681#else
1682 tf->ctl = ATA_DEVCTL_OBS;
1683#endif
3373efd8 1684 if (dev->devno == 0)
1da177e4
LT		 1685 tf->device = ATA_DEVICE_OBS;
1686 else
1687 tf->device = ATA_DEVICE_OBS | ATA_DEV1;
1688}
1689
2c13b7ce
JG		 1690static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
1691{
501e0c50 1692 qc->dma_dir = DMA_NONE;
ff2aeb1e 1693 qc->sg = NULL;
2c13b7ce 1694 qc->flags = 0;
87260216
JA		 1695 qc->cursg = NULL;
1696 qc->cursg_ofs = 0;
aacda375 1697 qc->nbytes = qc->extrabytes = qc->curbytes = 0;
7a801184 1698 qc->n_elem = 0;
a22e2eb0 1699 qc->err_mask = 0;
5a5dbd18 1700 qc->sect_size = ATA_SECT_SIZE;
2c13b7ce 1701
3373efd8 1702 ata_tf_init(qc->dev, &qc->tf);
e61e0672
TH		 1703
1704 /* init result_tf such that it indicates normal completion */
1705 qc->result_tf.command = ATA_DRDY;
1706 qc->result_tf.feature = 0;
2c13b7ce
JG		 1707}
1708
057ace5e 1709static inline int ata_try_flush_cache(const struct ata_device *dev)
1da177e4
LT		 1710{
1711 return ata_id_wcache_enabled(dev->id) ||
1712 ata_id_has_flush(dev->id) ||
1713 ata_id_has_flush_ext(dev->id);
1714}
1715
a7dac447
JG		 1716static inline unsigned int ac_err_mask(u8 status)
1717{
3655d1d3 1718 if (status & (ATA_BUSY | ATA_DRQ))
11a56d24 1719 return AC_ERR_HSM;
a7dac447
JG		 1720 if (status & (ATA_ERR | ATA_DF))
1721 return AC_ERR_DEV;
1722 return 0;
1723}
1724
1725static inline unsigned int __ac_err_mask(u8 status)
1726{
1727 unsigned int mask = ac_err_mask(status);
1728 if (mask == 0)
1729 return AC_ERR_OTHER;
1730 return mask;
1731}
1732
35bb94b1
JG		 1733static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
1734{
4911487a 1735 return *(struct ata_port **)&host->hostdata[0];
35bb94b1
JG		 1736}
1737
78ab88f0
TH		 1738static inline int ata_check_ready(u8 status)
1739{
005b1f74
JG		 1740 if (!(status & ATA_BUSY))
1741 return 1;
78ab88f0
TH		 1742
1743 /* 0xff indicates either no device or device not ready */
1744 if (status == 0xff)
1745 return -ENODEV;
1746
005b1f74 1747 return 0;
78ab88f0
TH		 1748}
1749
341c2c95
TH		 1750static inline unsigned long ata_deadline(unsigned long from_jiffies,
1751 unsigned long timeout_msecs)
1752{
1753 return from_jiffies + msecs_to_jiffies(timeout_msecs);
1754}
1755
b15b3eba
AC		 1756/* Don't open code these in drivers as there are traps. Firstly the range may
1757 change in future hardware and specs, secondly 0xFF means 'no DMA' but is
1758 > UDMA_0. Dyma ddreigiau */
1759
1760static inline int ata_using_mwdma(struct ata_device *adev)
1761{
1762 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4)
1763 return 1;
1764 return 0;
1765}
1766
1767static inline int ata_using_udma(struct ata_device *adev)
1768{
1769 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7)
1770 return 1;
1771 return 0;
1772}
1773
1774static inline int ata_dma_enabled(struct ata_device *adev)
1775{
1776 return (adev->dma_mode == 0xFF ? 0 : 1);
1777}
48515f6c
TH		 1778
1779/**************************************************************************
1780 * PMP - drivers/ata/libata-pmp.c
1781 */
88fcd562
TH		 1782#ifdef CONFIG_SATA_PMP
1783
48515f6c
TH		 1784extern const struct ata_port_operations sata_pmp_port_ops;
1785
1786extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
1787extern void sata_pmp_error_handler(struct ata_port *ap);
1788
88fcd562
TH		 1789#else /* CONFIG_SATA_PMP */
1790
1791#define sata_pmp_port_ops sata_port_ops
1792#define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1793#define sata_pmp_error_handler ata_std_error_handler
1794
1795#endif /* CONFIG_SATA_PMP */
1796
48515f6c 1797
624d5c51
TH		 1798/**************************************************************************
1799 * SFF - drivers/ata/libata-sff.c
1800 */
127102ae
TH		 1801#ifdef CONFIG_ATA_SFF
1802
624d5c51 1803extern const struct ata_port_operations ata_sff_port_ops;
871af121 1804extern const struct ata_port_operations ata_bmdma32_port_ops;
624d5c51
TH		 1805
1806/* PIO only, sg_tablesize and dma_boundary limits can be removed */
1807#define ATA_PIO_SHT(drv_name) \
1808 ATA_BASE_SHT(drv_name), \
1809 .sg_tablesize = LIBATA_MAX_PRD, \
1810 .dma_boundary = ATA_DMA_BOUNDARY
1811
9363c382
TH		 1812extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
1813extern u8 ata_sff_check_status(struct ata_port *ap);
a57c1bad
AC		 1814extern void ata_sff_pause(struct ata_port *ap);
1815extern void ata_sff_dma_pause(struct ata_port *ap);
9363c382
TH		 1816extern int ata_sff_busy_sleep(struct ata_port *ap,
1817 unsigned long timeout_pat, unsigned long timeout);
705e76be 1818extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline);
9363c382
TH		 1819extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
1820extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
1821extern void ata_sff_exec_command(struct ata_port *ap,
1822 const struct ata_taskfile *tf);
1823extern unsigned int ata_sff_data_xfer(struct ata_device *dev,
624d5c51 1824 unsigned char *buf, unsigned int buflen, int rw);
871af121
AC		 1825extern unsigned int ata_sff_data_xfer32(struct ata_device *dev,
1826 unsigned char *buf, unsigned int buflen, int rw);
9363c382 1827extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev,
624d5c51 1828 unsigned char *buf, unsigned int buflen, int rw);
e42a542b 1829extern void ata_sff_irq_on(struct ata_port *ap);
9363c382
TH		 1830extern void ata_sff_irq_clear(struct ata_port *ap);
1831extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
1832 u8 status, int in_wq);
64b97594
VK		 1833extern void ata_sff_queue_work(struct work_struct *work);
1834extern void ata_sff_queue_delayed_work(struct delayed_work *dwork,
1835 unsigned long delay);
ea3c6450 1836extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay);
9363c382 1837extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
22183bf5 1838extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
c3b28894 1839extern unsigned int ata_sff_port_intr(struct ata_port *ap,
9363c382
TH		 1840 struct ata_queued_cmd *qc);
1841extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
c96f1732 1842extern void ata_sff_lost_interrupt(struct ata_port *ap);
9363c382
TH		 1843extern void ata_sff_freeze(struct ata_port *ap);
1844extern void ata_sff_thaw(struct ata_port *ap);
1845extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
1846extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
1847 u8 *r_err);
705e76be
TH		 1848extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
1849 unsigned long deadline);
9363c382 1850extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
624d5c51 1851 unsigned long deadline);
9363c382
TH		 1852extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
1853 unsigned long deadline);
1854extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
3d47aa8e 1855extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
9363c382 1856extern void ata_sff_error_handler(struct ata_port *ap);
9363c382 1857extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
624d5c51 1858#ifdef CONFIG_PCI
9363c382
TH		 1859extern int ata_pci_sff_init_host(struct ata_host *host);
1860extern int ata_pci_sff_prepare_host(struct pci_dev *pdev,
624d5c51
TH		 1861 const struct ata_port_info * const * ppi,
1862 struct ata_host **r_host);
9363c382 1863extern int ata_pci_sff_activate_host(struct ata_host *host,
624d5c51
TH		 1864 irq_handler_t irq_handler,
1865 struct scsi_host_template *sht);
9363c382 1866extern int ata_pci_sff_init_one(struct pci_dev *pdev,
16ea0fc9
AC		 1867 const struct ata_port_info * const * ppi,
1868 struct scsi_host_template *sht, void *host_priv, int hflags);
624d5c51
TH		 1869#endif /* CONFIG_PCI */
1870
9a7780c9
TH		 1871#ifdef CONFIG_ATA_BMDMA
1872
1873extern const struct ata_port_operations ata_bmdma_port_ops;
1874
1875#define ATA_BMDMA_SHT(drv_name) \
1876 ATA_BASE_SHT(drv_name), \
1877 .sg_tablesize = LIBATA_MAX_PRD, \
1878 .dma_boundary = ATA_DMA_BOUNDARY
1879
f47451c4 1880extern void ata_bmdma_qc_prep(struct ata_queued_cmd *qc);
360ff783 1881extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc);
f47451c4 1882extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc);
c3b28894
TH		 1883extern unsigned int ata_bmdma_port_intr(struct ata_port *ap,
1884 struct ata_queued_cmd *qc);
1885extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance);
fe06e5f9
TH		 1886extern void ata_bmdma_error_handler(struct ata_port *ap);
1887extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
37f65b8b 1888extern void ata_bmdma_irq_clear(struct ata_port *ap);
9f2f7210
TH		 1889extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
1890extern void ata_bmdma_start(struct ata_queued_cmd *qc);
1891extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
1892extern u8 ata_bmdma_status(struct ata_port *ap);
c7087652
TH		 1893extern int ata_bmdma_port_start(struct ata_port *ap);
1894extern int ata_bmdma_port_start32(struct ata_port *ap);
9f2f7210
TH		 1895
1896#ifdef CONFIG_PCI
1897extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
c7087652 1898extern void ata_pci_bmdma_init(struct ata_host *host);
1c5afdf7
TH		 1899extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev,
1900 const struct ata_port_info * const * ppi,
1901 struct ata_host **r_host);
1902extern int ata_pci_bmdma_init_one(struct pci_dev *pdev,
1903 const struct ata_port_info * const * ppi,
1904 struct scsi_host_template *sht,
1905 void *host_priv, int hflags);
9f2f7210 1906#endif /* CONFIG_PCI */
9a7780c9 1907#endif /* CONFIG_ATA_BMDMA */
9f2f7210 1908
624d5c51 1909/**
9363c382 1910 * ata_sff_busy_wait - Wait for a port status register
624d5c51
TH		 1911 * @ap: Port to wait for.
1912 * @bits: bits that must be clear
1913 * @max: number of 10uS waits to perform
1914 *
1915 * Waits up to max*10 microseconds for the selected bits in the port's
1916 * status register to be cleared.
1917 * Returns final value of status register.
1918 *
1919 * LOCKING:
1920 * Inherited from caller.
1921 */
9363c382
TH		 1922static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits,
1923 unsigned int max)
624d5c51
TH		 1924{
1925 u8 status;
1926
1927 do {
1928 udelay(10);
5682ed33 1929 status = ap->ops->sff_check_status(ap);
624d5c51
TH		 1930 max--;
1931 } while (status != 0xff && (status & bits) && (max > 0));
1932
1933 return status;
1934}
1935
1936/**
1937 * ata_wait_idle - Wait for a port to be idle.
1938 * @ap: Port to wait for.
1939 *
1940 * Waits up to 10ms for port's BUSY and DRQ signals to clear.
1941 * Returns final value of status register.
1942 *
1943 * LOCKING:
1944 * Inherited from caller.
1945 */
1946static inline u8 ata_wait_idle(struct ata_port *ap)
1947{
9363c382 1948 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
624d5c51
TH		 1949
1950#ifdef ATA_DEBUG
1951 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
1952 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n",
1953 status);
1954#endif
1955
1956 return status;
1957}
127102ae 1958#endif /* CONFIG_ATA_SFF */
624d5c51 1959
1da177e4 1960#endif /* __LINUX_LIBATA_H__ */
Linux kernel - Deliverables
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