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