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battery: sec_battery: export {CURRENT/VOLTAGE}_MAX to sysfs
[GitHub/LineageOS/android_kernel_samsung_universal7580.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
LT		 136 ATA_SHT_EMULATED = 1,
137 ATA_SHT_CMD_PER_LUN = 1,
138 ATA_SHT_THIS_ID = -1,
cf482935 139 ATA_SHT_USE_CLUSTERING = 1,
1da177e4
LT		 140
141 /* struct ata_device stuff */
949b38af
TH		 142 ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */
143 ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */
029f5468 144 ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */
88e49034 145 ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */
6fc49adb 146 ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */
6746544c
TH		 147 ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */
148 ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */
7d77b247 149 ATA_DFLAG_AN = (1 << 7), /* AN configured */
91163006 150 ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */
2557164e 151 ATA_DFLAG_CFG_MASK = (1 << 12) - 1,
949b38af 152
2557164e
KCA		 153 ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */
154 ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */
054a5fba 155 ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */
00115e0f 156 ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */
45fabbb7 157 ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */
445d211b 158 ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */
f20ded38 159 ATA_DFLAG_INIT_MASK = (1 << 24) - 1,
1da177e4 160
f20ded38
TH		 161 ATA_DFLAG_DETACH = (1 << 24),
162 ATA_DFLAG_DETACHED = (1 << 25),
abdda733 163
b1354cbb 164 ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */
65fe1f0f 165 ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */
0d0cdb02 166 ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */
b1354cbb 167
1da177e4
LT		 168 ATA_DEV_UNKNOWN = 0, /* unknown device */
169 ATA_DEV_ATA = 1, /* ATA device */
170 ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */
171 ATA_DEV_ATAPI = 3, /* ATAPI device */
172 ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */
e0a71752
TH		 173 ATA_DEV_PMP = 5, /* SATA port multiplier */
174 ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */
175 ATA_DEV_SEMB = 7, /* SEMB */
176 ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */
177 ATA_DEV_NONE = 9, /* no device */
1da177e4 178
0c88758b 179 /* struct ata_link flags */
05944bdf 180 ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */
ae791c05
TH		 181 ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */
182 ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */
183 ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */
184 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB,
fd995f70 185 ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */
f9df58cb 186 ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */
18f7ba4c 187 ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */
6b7ae954 188 ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */
ca6d43b0 189 ATA_LFLAG_RST_ONCE = (1 << 9), /* limit recovery to one reset */
b5e32654 190 ATA_LFLAG_CHANGED = (1 << 10), /* LPM state changed on this link */
0c88758b 191
1da177e4 192 /* struct ata_port flags */
949b38af 193 ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */
1da177e4 194 /* (doesn't imply presence) */
949b38af 195 ATA_FLAG_SATA = (1 << 1),
949b38af
TH		 196 ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */
197 ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */
198 ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */
7395acb2
TH		 199 ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD
200 * doesn't handle PIO interrupts */
201 ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */
2a6e58d2
RW		 202 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */
203 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */
7395acb2 204 ATA_FLAG_DEBUGMSG = (1 << 13),
388539f3 205 ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */
b2a8bbe6 206 ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */
f834e49f 207 ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */
3cadbcc0 208 ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */
9f45cbd3 209 ATA_FLAG_AN = (1 << 18), /* controller supports AN */
e0a71752 210 ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */
18f7ba4c
KCA		 211 ATA_FLAG_EM = (1 << 21), /* driver supports enclosure
212 * management */
213 ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity
214 * led */
ae01b249 215 ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */
949b38af 216
b51e9e5d 217 /* bits 24:31 of ap->flags are reserved for LLD specific flags */
9ec957f2 218
e3cf95dd 219
b51e9e5d
TH		 220 /* struct ata_port pflags */
221 ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */
222 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */
223 ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */
224 ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */
225 ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */
b51e9e5d 226 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */
f4d6d004 227 ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */
afaa5c37 228 ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */
ece180d1
TH		 229 ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */
230 ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */
949b38af 231
b51e9e5d 232 ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */
500530f6 233 ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */
c05e6ff0 234 ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */
949b38af 235
e3cf95dd
AC		 236 ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */
237 ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */
238
949b38af
TH		 239 /* struct ata_queued_cmd flags */
240 ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */
001102d7 241 ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */
27197367 242 ATA_QCFLAG_IO = (1 << 3), /* standard IO command */
e61e0672 243 ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */
da917d69 244 ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */
e027bd36 245 ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */
03faab78 246 ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */
e61e0672 247
9ec957f2
TH		 248 ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */
249 ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */
250 ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */
1da177e4 251
4e5ec5db 252 /* host set flags */
cca3974e 253 ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */
ecef7253 254 ATA_HOST_STARTED = (1 << 1), /* Host started */
886ad09f 255 ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */
db63a4c8 256 ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */
9bec2e38 257
b8b275ef
TH		 258 /* bits 24:31 of host->flags are reserved for LLD specific flags */
259
1da177e4 260 /* various lengths of time */
341c2c95
TH		 261 ATA_TMOUT_BOOT = 30000, /* heuristic */
262 ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */
341c2c95 263 ATA_TMOUT_INTERNAL_QUICK = 5000,
45fabbb7 264 ATA_TMOUT_MAX_PARK = 30000,
1da177e4 265
b48d58f5
TH		 266 /*
267 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s
268 * is too much without parallel probing. Use 2s if parallel
269 * probing is available, 800ms otherwise.
88ff6eaf 270 */
b48d58f5
TH		 271 ATA_TMOUT_FF_WAIT_LONG = 2000,
272 ATA_TMOUT_FF_WAIT = 800,
88ff6eaf 273
705e76be
TH		 274 /* Spec mandates to wait for ">= 2ms" before checking status
275 * after reset. We wait 150ms, because that was the magic
276 * delay used for ATAPI devices in Hale Landis's ATADRVR, for
277 * the period of time between when the ATA command register is
278 * written, and then status is checked. Because waiting for
279 * "a while" before checking status is fine, post SRST, we
280 * perform this magic delay here as well.
281 *
282 * Old drivers/ide uses the 2mS rule and then waits for ready.
283 */
341c2c95 284 ATA_WAIT_AFTER_RESET = 150,
705e76be 285
9dadd45b
TH		 286 /* If PMP is supported, we have to do follow-up SRST. As some
287 * PMPs don't send D2H Reg FIS after hardreset, LLDs are
288 * advised to wait only for the following duration before
289 * doing SRST.
290 */
e7d3ef13 291 ATA_TMOUT_PMP_SRST_WAIT = 5000,
9dadd45b 292
b5e32654
GM		 293 /* When the LPM policy is set to ATA_LPM_MAX_POWER, there might
294 * be a spurious PHY event, so ignore the first PHY event that
295 * occurs within 10s after the policy change.
296 */
297 ATA_TMOUT_SPURIOUS_PHY = 10000,
298
1da177e4
LT		 299 /* ATA bus states */
300 BUS_UNKNOWN = 0,
301 BUS_DMA = 1,
302 BUS_IDLE = 2,
303 BUS_NOINTR = 3,
304 BUS_NODATA = 4,
305 BUS_TIMER = 5,
306 BUS_PIO = 6,
307 BUS_EDD = 7,
308 BUS_IDENTIFY = 8,
309 BUS_PACKET = 9,
310
311 /* SATA port states */
312 PORT_UNKNOWN = 0,
313 PORT_ENABLED = 1,
314 PORT_DISABLED = 2,
315
316 /* encoding various smaller bitmaps into a single
7dc951ae 317 * unsigned long bitmap
1da177e4 318 */
70cd071e
TH		 319 ATA_NR_PIO_MODES = 7,
320 ATA_NR_MWDMA_MODES = 5,
321 ATA_NR_UDMA_MODES = 8,
1da7b0d0
TH		 322
323 ATA_SHIFT_PIO = 0,
70cd071e
TH		 324 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES,
325 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES,
326
cedc9a47
JG		 327 /* size of buffer to pad xfers ending on unaligned boundaries */
328 ATA_DMA_PAD_SZ = 4,
949b38af 329
0c247c55
TH		 330 /* ering size */
331 ATA_ERING_SIZE = 32,
332
31cc23b3
TH		 333 /* return values for ->qc_defer */
334 ATA_DEFER_LINK = 1,
335 ATA_DEFER_PORT = 2,
336
f3e81b19
TH		 337 /* desc_len for ata_eh_info and context */
338 ATA_EH_DESC_LEN = 80,
339
9be1e979
TH		 340 /* reset / recovery action types */
341 ATA_EH_REVALIDATE = (1 << 0),
cf480626
TH		 342 ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */
343 ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */
344 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
f9df58cb 345 ATA_EH_ENABLE_LINK = (1 << 3),
45fabbb7 346 ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */
9be1e979 347
45fabbb7 348 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK,
b5b3fa38 349 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET |
6b7ae954 350 ATA_EH_ENABLE_LINK,
9be1e979 351
f3e81b19 352 /* ata_eh_info->flags */
abdda733 353 ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */
1cdaf534
TH		 354 ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */
355 ATA_EHI_QUIET = (1 << 3), /* be quiet */
e2f3d75f 356 ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */
abdda733 357
0d64a233
TH		 358 ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */
359 ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */
360 ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */
361 ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */
89692c03 362 ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */
f3e81b19 363
0d64a233 364 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
13abf50d 365
848e4c68
TH		 366 /* mask of flags to transfer *to* the slave link */
367 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET,
368
a1e10f7e
TH		 369 /* max tries if error condition is still set after ->error_handler */
370 ATA_EH_MAX_TRIES = 5,
ad9e2762 371
5040ab67
TH		 372 /* sometimes resuming a link requires several retries */
373 ATA_LINK_RESUME_TRIES = 5,
374
14d2bac1
TH		 375 /* how hard are we gonna try to probe/recover devices */
376 ATA_PROBE_MAX_TRIES = 3,
022bdb07 377 ATA_EH_DEV_TRIES = 3,
e0a71752
TH		 378 ATA_EH_PMP_TRIES = 5,
379 ATA_EH_PMP_LINK_TRIES = 3,
380
bf1bff6f 381 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */
f5914a46 382
87fbc5a0
TH		 383 /* This should match the actual table size of
384 * ata_eh_cmd_timeout_table in libata-eh.c.
385 */
6013efd8 386 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6,
87fbc5a0 387
93590859 388 /* Horkage types. May be set by libata or controller on drives
25985edc 389 (some horkage may be drive/controller pair dependent */
93590859
AC		 390
391 ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */
6919a0a6
AC		 392 ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */
393 ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */
18d6e9d5 394 ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */
16c55b03 395 ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */
50af2fa1 396 ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */
93328e11 397 ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */
6bbfd53d 398 ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */
2d3b8eea 399 ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */
9ce8e307 400 ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */
6a87e42e
TH		 401 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands
402 not multiple of 16 bytes */
877d0310 403 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */
9062712f 404 ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */
d0cb43b3 405 ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */
388539f3 406 ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */
43c9c591 407 ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */
a32450e1 408 ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17), /* Set max sects to 65535 */
3d097b15 409 ATA_HORKAGE_ATAPI_DMADIR = (1 << 18), /* device requires dmadir */
f07b772d
TH		 410 ATA_HORKAGE_NOLPM = (1 << 20), /* don't use LPM */
411 ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21), /* some WDs have broken LPM */
84ea9b7a 412 ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */
b3a70601 413
2dcb407e 414 /* DMA mask for user DMA control: User visible values; DO NOT
b3a70601
AC		 415 renumber */
416 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */
417 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */
418 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */
ceb0c642
TH		 419
420 /* ATAPI command types */
421 ATAPI_READ = 0, /* READs */
422 ATAPI_WRITE = 1, /* WRITEs */
423 ATAPI_READ_CD = 2, /* READ CD [MSF] */
e52dcc48
TH		 424 ATAPI_PASS_THRU = 3, /* SAT pass-thru */
425 ATAPI_MISC = 4, /* the rest */
624d5c51
TH		 426
427 /* Timing constants */
428 ATA_TIMING_SETUP = (1 << 0),
429 ATA_TIMING_ACT8B = (1 << 1),
430 ATA_TIMING_REC8B = (1 << 2),
431 ATA_TIMING_CYC8B = (1 << 3),
432 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
433 ATA_TIMING_CYC8B,
434 ATA_TIMING_ACTIVE = (1 << 4),
435 ATA_TIMING_RECOVER = (1 << 5),
3ada9c12
DD		 436 ATA_TIMING_DMACK_HOLD = (1 << 6),
437 ATA_TIMING_CYCLE = (1 << 7),
438 ATA_TIMING_UDMA = (1 << 8),
624d5c51
TH		 439 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
440 ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
441 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
3ada9c12
DD		 442 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE |
443 ATA_TIMING_UDMA,
f1bce7f8
TH		 444
445 /* ACPI constants */
446 ATA_ACPI_FILTER_SETXFER = 1 << 0,
447 ATA_ACPI_FILTER_LOCK = 1 << 1,
448 ATA_ACPI_FILTER_DIPM = 1 << 2,
fa5b561c
TH		 449 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */
450 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */
f1bce7f8
TH		 451
452 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER |
453 ATA_ACPI_FILTER_LOCK |
454 ATA_ACPI_FILTER_DIPM,
1da177e4
LT		 455};
456
7dc951ae
TH		 457enum ata_xfer_mask {
458 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1)
459 << ATA_SHIFT_PIO,
460 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1)
461 << ATA_SHIFT_MWDMA,
462 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1)
463 << ATA_SHIFT_UDMA,
464};
465
14be71f4 466enum hsm_task_states {
c56b14d2 467 HSM_ST_IDLE, /* no command on going */
71527647
AL		 468 HSM_ST_FIRST, /* (waiting the device to)
469 write CDB or first data block */
c56b14d2
AL		 470 HSM_ST, /* (waiting the device to) transfer data */
471 HSM_ST_LAST, /* (waiting the device to) complete command */
c56b14d2 472 HSM_ST_ERR, /* error */
1da177e4
LT		 473};
474
a7dac447 475enum ata_completion_errors {
11a56d24
TH		 476 AC_ERR_DEV = (1 << 0), /* device reported error */
477 AC_ERR_HSM = (1 << 1), /* host state machine violation */
478 AC_ERR_TIMEOUT = (1 << 2), /* timeout */
479 AC_ERR_MEDIA = (1 << 3), /* media error */
480 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */
481 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */
482 AC_ERR_SYSTEM = (1 << 6), /* system error */
483 AC_ERR_INVALID = (1 << 7), /* invalid argument */
484 AC_ERR_OTHER = (1 << 8), /* unknown */
55a8e2c8 485 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */
5335b729 486 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */
a7dac447
JG		 487};
488
c93b263e
TH		 489/*
490 * Link power management policy: If you alter this, you also need to
491 * alter libata-scsi.c (for the ascii descriptions)
492 */
493enum ata_lpm_policy {
494 ATA_LPM_UNKNOWN,
495 ATA_LPM_MAX_POWER,
496 ATA_LPM_MED_POWER,
497 ATA_LPM_MIN_POWER,
498};
499
6b7ae954
TH		 500enum ata_lpm_hints {
501 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */
502 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */
503};
504
1da177e4
LT		 505/* forward declarations */
506struct scsi_device;
507struct ata_port_operations;
508struct ata_port;
cc0680a5 509struct ata_link;
1da177e4
LT		 510struct ata_queued_cmd;
511
512/* typedefs */
77853bf2 513typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
cc0680a5
TH		 514typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
515typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
d4b2bab4 516 unsigned long deadline);
cc0680a5 517typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
1da177e4 518
ee959b00 519extern struct device_attribute dev_attr_link_power_management_policy;
45fabbb7 520extern struct device_attribute dev_attr_unload_heads;
18f7ba4c
KCA		 521extern struct device_attribute dev_attr_em_message_type;
522extern struct device_attribute dev_attr_em_message;
523extern struct device_attribute dev_attr_sw_activity;
524
525enum sw_activity {
526 OFF,
527 BLINK_ON,
528 BLINK_OFF,
529};
ca77329f 530
127102ae 531#ifdef CONFIG_ATA_SFF
1da177e4 532struct ata_ioports {
0d5ff566
TH		 533 void __iomem *cmd_addr;
534 void __iomem *data_addr;
535 void __iomem *error_addr;
536 void __iomem *feature_addr;
537 void __iomem *nsect_addr;
538 void __iomem *lbal_addr;
539 void __iomem *lbam_addr;
540 void __iomem *lbah_addr;
541 void __iomem *device_addr;
542 void __iomem *status_addr;
543 void __iomem *command_addr;
544 void __iomem *altstatus_addr;
545 void __iomem *ctl_addr;
9a7780c9 546#ifdef CONFIG_ATA_BMDMA
0d5ff566 547 void __iomem *bmdma_addr;
9a7780c9 548#endif /* CONFIG_ATA_BMDMA */
0d5ff566 549 void __iomem *scr_addr;
1da177e4 550};
127102ae 551#endif /* CONFIG_ATA_SFF */
1da177e4 552
cca3974e 553struct ata_host {
1da177e4
LT		 554 spinlock_t lock;
555 struct device *dev;
0d5ff566 556 void __iomem * const *iomap;
1da177e4 557 unsigned int n_ports;
03cccb9c 558 unsigned int n_tags; /* nr of NCQ tags */
1da177e4 559 void *private_data;
029cfd6b 560 struct ata_port_operations *ops;
5444a6f4 561 unsigned long flags;
c0c362b6
TH		 562
563 struct mutex eh_mutex;
564 struct task_struct *eh_owner;
565
032af1ce 566 struct ata_port *simplex_claimed; /* channel owning the DMA */
f0eb62b8 567 struct ata_port *ports[0];
1da177e4
LT		 568};
569
570struct ata_queued_cmd {
571 struct ata_port *ap;
572 struct ata_device *dev;
573
574 struct scsi_cmnd *scsicmd;
575 void (*scsidone)(struct scsi_cmnd *);
576
577 struct ata_taskfile tf;
578 u8 cdb[ATAPI_CDB_LEN];
579
580 unsigned long flags; /* ATA_QCFLAG_xxx */
581 unsigned int tag;
582 unsigned int n_elem;
5825627c 583 unsigned int orig_n_elem;
1da177e4
LT		 584
585 int dma_dir;
586
5a5dbd18 587 unsigned int sect_size;
cedc9a47 588
1da177e4 589 unsigned int nbytes;
aacda375 590 unsigned int extrabytes;
1da177e4
LT		 591 unsigned int curbytes;
592
1da177e4 593 struct scatterlist sgent;
1da177e4 594
ff2aeb1e 595 struct scatterlist *sg;
1da177e4 596
b34e9042
RK		 597 struct scatterlist *cursg;
598 unsigned int cursg_ofs;
599
a22e2eb0 600 unsigned int err_mask;
e61e0672 601 struct ata_taskfile result_tf;
1da177e4
LT		 602 ata_qc_cb_t complete_fn;
603
1da177e4 604 void *private_data;
1c50dc83 605 void *lldd_task;
1da177e4
LT		 606};
607
cca3974e 608struct ata_port_stats {
1da177e4
LT		 609 unsigned long unhandled_irq;
610 unsigned long idle_irq;
611 unsigned long rw_reqbuf;
612};
613
0c247c55 614struct ata_ering_entry {
3884f7b0 615 unsigned int eflags;
0c247c55
TH		 616 unsigned int err_mask;
617 u64 timestamp;
618};
619
620struct ata_ering {
621 int cursor;
622 struct ata_ering_entry ring[ATA_ERING_SIZE];
623};
624
1da177e4 625struct ata_device {
9af5c9c9 626 struct ata_link *link;
72fa4b74 627 unsigned int devno; /* 0 or 1 */
75683fe7 628 unsigned int horkage; /* List of broken features */
6866e7bc 629 unsigned long flags; /* ATA_DFLAG_xxx */
3edebac4 630 struct scsi_device *sdev; /* attached SCSI device */
95514fd8 631 void *private_data;
fafbae87 632#ifdef CONFIG_ATA_ACPI
398e0782 633 union acpi_object *gtf_cache;
110f66d2 634 unsigned int gtf_filter;
afe75951
AL		 635#endif
636#ifdef CONFIG_SATA_ZPODD
637 void *zpodd;
fafbae87 638#endif
d9027470 639 struct device tdev;
99cf610a 640 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */
72fa4b74 641 u64 n_sectors; /* size of device, if ATA */
5920dadf 642 u64 n_native_sectors; /* native size, if ATA */
1da177e4 643 unsigned int class; /* ATA_DEV_xxx */
45fabbb7 644 unsigned long unpark_deadline;
e0a71752 645
1da177e4
LT		 646 u8 pio_mode;
647 u8 dma_mode;
648 u8 xfer_mode;
649 unsigned int xfer_shift; /* ATA_SHIFT_xxx */
650
8cbd6df1
AL		 651 unsigned int multi_count; /* sectors count for
652 READ/WRITE MULTIPLE */
b00eec1d 653 unsigned int max_sectors; /* per-device max sectors */
6e7846e9 654 unsigned int cdb_len;
8bf62ece 655
acf356b1 656 /* per-dev xfer mask */
7dc951ae
TH		 657 unsigned long pio_mask;
658 unsigned long mwdma_mask;
659 unsigned long udma_mask;
acf356b1 660
8bf62ece
AL		 661 /* for CHS addressing */
662 u16 cylinders; /* Number of cylinders */
663 u16 heads; /* Number of heads */
664 u16 sectors; /* Number of sectors per track */
0c247c55 665
f7e98930
JG		 666 union {
667 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
668 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
dbf1d150 669 } ____cacheline_aligned;
99cf610a 670
803739d2
SH		 671 /* DEVSLP Timing Variables from Identify Device Data Log */
672 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE];
65fe1f0f 673
99cf610a
TH		 674 /* error history */
675 int spdn_cnt;
676 /* ering is CLEAR_END, read comment above CLEAR_END */
677 struct ata_ering ering;
1da177e4
LT		 678};
679
99cf610a
TH		 680/* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are
681 * cleared to zero on ata_dev_init().
72fa4b74 682 */
99cf610a
TH		 683#define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
684#define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
72fa4b74 685
f3e81b19
TH		 686struct ata_eh_info {
687 struct ata_device *dev; /* offending device */
688 u32 serror; /* SError from LLDD */
689 unsigned int err_mask; /* port-wide err_mask */
690 unsigned int action; /* ATA_EH_* action mask */
47005f25 691 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */
f3e81b19 692 unsigned int flags; /* ATA_EHI_* flags */
abdda733 693
abdda733
TH		 694 unsigned int probe_mask;
695
f3e81b19
TH		 696 char desc[ATA_EH_DESC_LEN];
697 int desc_len;
698};
699
700struct ata_eh_context {
701 struct ata_eh_info i;
702 int tries[ATA_MAX_DEVICES];
87fbc5a0
TH		 703 int cmd_timeout_idx[ATA_MAX_DEVICES]
704 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE];
abdda733
TH		 705 unsigned int classes[ATA_MAX_DEVICES];
706 unsigned int did_probe_mask;
45fabbb7 707 unsigned int unloaded_mask;
00115e0f
TH		 708 unsigned int saved_ncq_enabled;
709 u8 saved_xfer_mode[ATA_MAX_DEVICES];
0a2c0f56
TH		 710 /* timestamp for the last reset attempt or success */
711 unsigned long last_reset;
f3e81b19
TH		 712};
713
64578a3d
TH		 714struct ata_acpi_drive
715{
716 u32 pio;
717 u32 dma;
718} __packed;
719
720struct ata_acpi_gtm {
721 struct ata_acpi_drive drive[2];
722 u32 flags;
723} __packed;
724
9af5c9c9
TH		 725struct ata_link {
726 struct ata_port *ap;
8989805d 727 int pmp; /* port multiplier port # */
9af5c9c9 728
d9027470 729 struct device tdev;
9af5c9c9
TH		 730 unsigned int active_tag; /* active tag on this link */
731 u32 sactive; /* active NCQ commands */
732
0c88758b
TH		 733 unsigned int flags; /* ATA_LFLAG_xxx */
734
d127ea7b 735 u32 saved_scontrol; /* SControl on probe */
9af5c9c9
TH		 736 unsigned int hw_sata_spd_limit;
737 unsigned int sata_spd_limit;
738 unsigned int sata_spd; /* current SATA PHY speed */
6b7ae954 739 enum ata_lpm_policy lpm_policy;
9af5c9c9
TH		 740
741 /* record runtime error info, protected by host_set lock */
742 struct ata_eh_info eh_info;
743 /* EH context */
744 struct ata_eh_context eh_context;
745
746 struct ata_device device[ATA_MAX_DEVICES];
b5e32654
GM		 747
748 unsigned long last_lpm_change; /* when last LPM change happened */
9af5c9c9 749};
d9027470
GG		 750#define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
751#define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
9af5c9c9 752
1da177e4 753struct ata_port {
cca3974e 754 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */
029cfd6b 755 struct ata_port_operations *ops;
ba6a1308 756 spinlock_t *lock;
e3cf95dd
AC		 757 /* Flags owned by the EH context. Only EH should touch these once the
758 port is active */
1da177e4 759 unsigned long flags; /* ATA_FLAG_xxx */
e3cf95dd 760 /* Flags that change dynamically, protected by ap->lock */
b51e9e5d 761 unsigned int pflags; /* ATA_PFLAG_xxx */
44877b4e
TH		 762 unsigned int print_id; /* user visible unique port ID */
763 unsigned int port_no; /* 0 based port no. inside the host */
1da177e4 764
127102ae 765#ifdef CONFIG_ATA_SFF
1da177e4 766 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */
1da177e4
LT		 767 u8 ctl; /* cache of ATA control register */
768 u8 last_ctl; /* Cache last written value */
ea3c6450 769 struct ata_link* sff_pio_task_link; /* link currently used */
c429137a 770 struct delayed_work sff_pio_task;
9a7780c9 771#ifdef CONFIG_ATA_BMDMA
f60d7011
TH		 772 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */
773 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */
9a7780c9 774#endif /* CONFIG_ATA_BMDMA */
5fe7454a
TH		 775#endif /* CONFIG_ATA_SFF */
776
1da177e4
LT		 777 unsigned int pio_mask;
778 unsigned int mwdma_mask;
779 unsigned int udma_mask;
780 unsigned int cbl; /* cable type; ATA_CBL_xxx */
1da177e4
LT		 781
782 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE];
8a8bc223 783 unsigned long qc_allocated;
dedaf2b0 784 unsigned int qc_active;
da917d69 785 int nr_active_links; /* #links with active qcs */
cfd192c9 786 unsigned int last_tag; /* track next tag hw expects */
dedaf2b0 787
b1c72916
TH		 788 struct ata_link link; /* host default link */
789 struct ata_link *slave_link; /* see ata_slave_link_init() */
1da177e4 790
8989805d
TH		 791 int nr_pmp_links; /* nr of available PMP links */
792 struct ata_link *pmp_link; /* array of PMP links */
da917d69 793 struct ata_link *excl_link; /* for PMP qc exclusion */
8989805d 794
cca3974e
JG		 795 struct ata_port_stats stats;
796 struct ata_host *host;
2f1f610b 797 struct device *dev;
d9027470 798 struct device tdev;
1da177e4 799
ad72cf98 800 struct mutex scsi_scan_mutex;
52bad64d 801 struct delayed_work hotplug_task;
3b01b8af 802 struct work_struct scsi_rescan_task;
86e45b6b 803
14be71f4 804 unsigned int hsm_task_state;
1da177e4 805
bfd60579 806 u32 msg_enable;
a72ec4ce 807 struct list_head eh_done_q;
c6cf9e99 808 wait_queue_head_t eh_wait_q;
a1e10f7e 809 int eh_tries;
45fabbb7 810 struct completion park_req_pending;
bfd60579 811
500530f6
TH		 812 pm_message_t pm_mesg;
813 int *pm_result;
6b7ae954 814 enum ata_lpm_policy target_lpm_policy;
500530f6 815
5ddf24c5
TH		 816 struct timer_list fastdrain_timer;
817 unsigned long fastdrain_cnt;
818
18f7ba4c 819 int em_message_type;
1da177e4 820 void *private_data;
fe635c7e 821
fafbae87 822#ifdef CONFIG_ATA_ACPI
c05e6ff0 823 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */
fafbae87 824#endif
84bda12a
TH		 825 /* owned by EH */
826 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
1da177e4
LT		 827};
828
029cfd6b
TH		 829/* The following initializer overrides a method to NULL whether one of
830 * its parent has the method defined or not. This is equivalent to
831 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant
832 * expression and thus can't be used as an initializer.
833 */
834#define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
835
1da177e4 836struct ata_port_operations {
c1bc899f
TH		 837 /*
838 * Command execution
839 */
840 int (*qc_defer)(struct ata_queued_cmd *qc);
841 int (*check_atapi_dma)(struct ata_queued_cmd *qc);
842 void (*qc_prep)(struct ata_queued_cmd *qc);
843 unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
22183bf5 844 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc);
1da177e4 845
c1bc899f
TH		 846 /*
847 * Configuration and exception handling
848 */
849 int (*cable_detect)(struct ata_port *ap);
850 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask);
851 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
852 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
853 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
963e4975 854 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id);
1da177e4 855
c1bc899f 856 void (*dev_config)(struct ata_device *dev);
1da177e4 857
c1bc899f
TH		 858 void (*freeze)(struct ata_port *ap);
859 void (*thaw)(struct ata_port *ap);
a1efdaba
TH		 860 ata_prereset_fn_t prereset;
861 ata_reset_fn_t softreset;
862 ata_reset_fn_t hardreset;
863 ata_postreset_fn_t postreset;
864 ata_prereset_fn_t pmp_prereset;
865 ata_reset_fn_t pmp_softreset;
866 ata_reset_fn_t pmp_hardreset;
867 ata_postreset_fn_t pmp_postreset;
c1bc899f 868 void (*error_handler)(struct ata_port *ap);
c96f1732 869 void (*lost_interrupt)(struct ata_port *ap);
c1bc899f 870 void (*post_internal_cmd)(struct ata_queued_cmd *qc);
e4a9c373
DW		 871 void (*sched_eh)(struct ata_port *ap);
872 void (*end_eh)(struct ata_port *ap);
c1bc899f
TH		 873
874 /*
875 * Optional features
876 */
82ef04fb
TH		 877 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val);
878 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val);
c1bc899f
TH		 879 void (*pmp_attach)(struct ata_port *ap);
880 void (*pmp_detach)(struct ata_port *ap);
6b7ae954
TH		 881 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy,
882 unsigned hints);
c1bc899f
TH		 883
884 /*
885 * Start, stop, suspend and resume
886 */
887 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg);
888 int (*port_resume)(struct ata_port *ap);
889 int (*port_start)(struct ata_port *ap);
890 void (*port_stop)(struct ata_port *ap);
891 void (*host_stop)(struct ata_host *host);
892
127102ae 893#ifdef CONFIG_ATA_SFF
c1bc899f
TH		 894 /*
895 * SFF / taskfile oriented ops
896 */
5682ed33 897 void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
41dec29b 898 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl);
5682ed33
TH		 899 u8 (*sff_check_status)(struct ata_port *ap);
900 u8 (*sff_check_altstatus)(struct ata_port *ap);
901 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
902 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
903 void (*sff_exec_command)(struct ata_port *ap,
904 const struct ata_taskfile *tf);
905 unsigned int (*sff_data_xfer)(struct ata_device *dev,
906 unsigned char *buf, unsigned int buflen, int rw);
e42a542b 907 void (*sff_irq_on)(struct ata_port *);
27943620 908 bool (*sff_irq_check)(struct ata_port *);
5682ed33 909 void (*sff_irq_clear)(struct ata_port *);
8244cd05 910 void (*sff_drain_fifo)(struct ata_queued_cmd *qc);
5682ed33 911
9a7780c9 912#ifdef CONFIG_ATA_BMDMA
c1bc899f
TH		 913 void (*bmdma_setup)(struct ata_queued_cmd *qc);
914 void (*bmdma_start)(struct ata_queued_cmd *qc);
915 void (*bmdma_stop)(struct ata_queued_cmd *qc);
916 u8 (*bmdma_status)(struct ata_port *ap);
9a7780c9 917#endif /* CONFIG_ATA_BMDMA */
127102ae 918#endif /* CONFIG_ATA_SFF */
c1bc899f 919
18f7ba4c
KCA		 920 ssize_t (*em_show)(struct ata_port *ap, char *buf);
921 ssize_t (*em_store)(struct ata_port *ap, const char *message,
922 size_t size);
923 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf);
924 ssize_t (*sw_activity_store)(struct ata_device *dev,
925 enum sw_activity val);
c1bc899f
TH		 926 /*
927 * Obsolete
9ec957f2 928 */
c1bc899f
TH		 929 void (*phy_reset)(struct ata_port *ap);
930 void (*eng_timeout)(struct ata_port *ap);
029cfd6b
TH		 931
932 /*
933 * ->inherits must be the last field and all the preceding
934 * fields must be pointers.
935 */
936 const struct ata_port_operations *inherits;
1da177e4
LT		 937};
938
939struct ata_port_info {
cca3974e 940 unsigned long flags;
0c88758b 941 unsigned long link_flags;
1da177e4
LT		 942 unsigned long pio_mask;
943 unsigned long mwdma_mask;
944 unsigned long udma_mask;
029cfd6b 945 struct ata_port_operations *port_ops;
e99f8b5e 946 void *private_data;
1da177e4
LT		 947};
948
452503f9
AC		 949struct ata_timing {
950 unsigned short mode; /* ATA mode */
951 unsigned short setup; /* t1 */
952 unsigned short act8b; /* t2 for 8-bit I/O */
953 unsigned short rec8b; /* t2i for 8-bit I/O */
954 unsigned short cyc8b; /* t0 for 8-bit I/O */
955 unsigned short active; /* t2 or tD */
956 unsigned short recover; /* t2i or tK */
3ada9c12 957 unsigned short dmack_hold; /* tj */
452503f9
AC		 958 unsigned short cycle; /* t0 */
959 unsigned short udma; /* t2CYCTYP/2 */
960};
961
624d5c51
TH		 962/*
963 * Core layer - drivers/ata/libata-core.c
964 */
e9c83914
TH		 965extern const unsigned long sata_deb_timing_normal[];
966extern const unsigned long sata_deb_timing_hotplug[];
967extern const unsigned long sata_deb_timing_long[];
968
029cfd6b 969extern struct ata_port_operations ata_dummy_port_ops;
21b0ad4f 970extern const struct ata_port_info ata_dummy_port_info;
dd5b06c4 971
e9c83914
TH		 972static inline const unsigned long *
973sata_ehc_deb_timing(struct ata_eh_context *ehc)
974{
975 if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
976 return sata_deb_timing_hotplug;
977 else
978 return sata_deb_timing_normal;
979}
d7bb4cc7 980
dd5b06c4
TH		 981static inline int ata_port_is_dummy(struct ata_port *ap)
982{
983 return ap->ops == &ata_dummy_port_ops;
984}
985
936fd732 986extern int sata_set_spd(struct ata_link *link);
0aa1113d 987extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
aa2731ad
TH		 988extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
989 int (*check_ready)(struct ata_link *link));
936fd732
TH		 990extern int sata_link_debounce(struct ata_link *link,
991 const unsigned long *params, unsigned long deadline);
992extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
993 unsigned long deadline);
1152b261
TH		 994extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
995 bool spm_wakeup);
cc0680a5 996extern int sata_link_hardreset(struct ata_link *link,
9dadd45b
TH		 997 const unsigned long *timing, unsigned long deadline,
998 bool *online, int (*check_ready)(struct ata_link *));
57c9efdf
TH		 999extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
1000 unsigned long deadline);
203c75b8 1001extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
2855568b 1002
f3187195 1003extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
f5cda257
TH		 1004extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
1005 const struct ata_port_info * const * ppi, int n_ports);
b1c72916 1006extern int ata_slave_link_init(struct ata_port *ap);
ecef7253 1007extern int ata_host_start(struct ata_host *host);
f3187195
TH		 1008extern int ata_host_register(struct ata_host *host,
1009 struct scsi_host_template *sht);
f5cda257
TH		 1010extern int ata_host_activate(struct ata_host *host, int irq,
1011 irq_handler_t irq_handler, unsigned long irq_flags,
1012 struct scsi_host_template *sht);
0529c159 1013extern void ata_host_detach(struct ata_host *host);
8d8e7d13 1014extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *);
193515d5 1015extern int ata_scsi_detect(struct scsi_host_template *sht);
1da177e4 1016extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
f281233d 1017extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd);
94be9a58
JG		 1018extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev,
1019 int cmd, void __user *arg);
80289167 1020extern void ata_sas_port_destroy(struct ata_port *);
cca3974e 1021extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
80289167 1022 struct ata_port_info *, struct Scsi_Host *);
b2024459
DW		 1023extern void ata_sas_async_probe(struct ata_port *ap);
1024extern int ata_sas_sync_probe(struct ata_port *ap);
80289167
BK		 1025extern int ata_sas_port_init(struct ata_port *);
1026extern int ata_sas_port_start(struct ata_port *ap);
1027extern void ata_sas_port_stop(struct ata_port *ap);
1028extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
b27dcfb0 1029extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap);
936fd732
TH		 1030extern int sata_scr_valid(struct ata_link *link);
1031extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
1032extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
1033extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
b5b3fa38
TH		 1034extern bool ata_link_online(struct ata_link *link);
1035extern bool ata_link_offline(struct ata_link *link);
6ffa01d8 1036#ifdef CONFIG_PM
cca3974e
JG		 1037extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
1038extern void ata_host_resume(struct ata_host *host);
2fcbdcb4
DW		 1039extern int ata_sas_port_async_suspend(struct ata_port *ap, int *async);
1040extern int ata_sas_port_async_resume(struct ata_port *ap, int *async);
1041#else
1042static inline int ata_sas_port_async_suspend(struct ata_port *ap, int *async)
1043{
1044 return 0;
1045}
1046static inline int ata_sas_port_async_resume(struct ata_port *ap, int *async)
1047{
1048 return 0;
1049}
6ffa01d8 1050#endif
67846b30 1051extern int ata_ratelimit(void);
97750ceb
TH		 1052extern void ata_msleep(struct ata_port *ap, unsigned int msecs);
1053extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask,
1054 u32 val, unsigned long interval, unsigned long timeout);
436d34b3 1055extern int atapi_cmd_type(u8 opcode);
9977126c
TH		 1056extern void ata_tf_to_fis(const struct ata_taskfile *tf,
1057 u8 pmp, int is_cmd, u8 *fis);
057ace5e 1058extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
7dc951ae
TH		 1059extern unsigned long ata_pack_xfermask(unsigned long pio_mask,
1060 unsigned long mwdma_mask, unsigned long udma_mask);
1061extern void ata_unpack_xfermask(unsigned long xfer_mask,
1062 unsigned long *pio_mask, unsigned long *mwdma_mask,
1063 unsigned long *udma_mask);
1064extern u8 ata_xfer_mask2mode(unsigned long xfer_mask);
1065extern unsigned long ata_xfer_mode2mask(u8 xfer_mode);
1066extern int ata_xfer_mode2shift(unsigned long xfer_mode);
1067extern const char *ata_mode_string(unsigned long xfer_mask);
1068extern unsigned long ata_id_xfermask(const u16 *id);
31cc23b3 1069extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
e46834cd 1070extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);
1da177e4
LT		 1071extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
1072 unsigned int n_elem);
057ace5e 1073extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
10305f0f 1074extern void ata_dev_disable(struct ata_device *adev);
6a62a04d
TH		 1075extern void ata_id_string(const u16 *id, unsigned char *s,
1076 unsigned int ofs, unsigned int len);
1077extern void ata_id_c_string(const u16 *id, unsigned char *s,
1078 unsigned int ofs, unsigned int len);
963e4975
AC		 1079extern unsigned int ata_do_dev_read_id(struct ata_device *dev,
1080 struct ata_taskfile *tf, u16 *id);
f686bcb8 1081extern void ata_qc_complete(struct ata_queued_cmd *qc);
79f97dad 1082extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active);
b27dcfb0 1083extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd);
1da177e4
LT		 1084extern int ata_std_bios_param(struct scsi_device *sdev,
1085 struct block_device *bdev,
1086 sector_t capacity, int geom[]);
d8d9129e 1087extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
1da177e4 1088extern int ata_scsi_slave_config(struct scsi_device *sdev);
83c47bcb 1089extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
a6e6ce8e 1090extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
e881a172 1091 int queue_depth, int reason);
f6e67035
DW		 1092extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev,
1093 int queue_depth, int reason);
3373efd8 1094extern struct ata_device *ata_dev_pair(struct ata_device *adev);
0260731f 1095extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
0e0b494c
JB		 1096extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap);
1097extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q);
ef1805d3 1098extern bool sata_lpm_ignore_phy_events(struct ata_link *link);
1da177e4 1099
be0d18df
AC		 1100extern int ata_cable_40wire(struct ata_port *ap);
1101extern int ata_cable_80wire(struct ata_port *ap);
1102extern int ata_cable_sata(struct ata_port *ap);
c88f90c3 1103extern int ata_cable_ignore(struct ata_port *ap);
be0d18df
AC		 1104extern int ata_cable_unknown(struct ata_port *ap);
1105
624d5c51 1106/* Timing helpers */
1bc4ccff 1107extern unsigned int ata_pio_need_iordy(const struct ata_device *);
6357357c 1108extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
452503f9
AC		 1109extern int ata_timing_compute(struct ata_device *, unsigned short,
1110 struct ata_timing *, int, int);
1111extern void ata_timing_merge(const struct ata_timing *,
1112 const struct ata_timing *, struct ata_timing *,
1113 unsigned int);
a0f79b92 1114extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);
452503f9 1115
624d5c51
TH		 1116/* PCI */
1117#ifdef CONFIG_PCI
1118struct pci_dev;
1119
1120struct pci_bits {
1121 unsigned int reg; /* PCI config register to read */
1122 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
1123 unsigned long mask;
1124 unsigned long val;
452503f9
AC		 1125};
1126
624d5c51
TH		 1127extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
1128extern void ata_pci_remove_one(struct pci_dev *pdev);
1129
1130#ifdef CONFIG_PM
1131extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
1132extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
1133extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
1134extern int ata_pci_device_resume(struct pci_dev *pdev);
1135#endif /* CONFIG_PM */
1136#endif /* CONFIG_PCI */
1137
b7db04d9
BN		 1138struct platform_device;
1139
1140extern int ata_platform_remove_one(struct platform_device *pdev);
1141
624d5c51
TH		 1142/*
1143 * ACPI - drivers/ata/libata-acpi.c
1144 */
e1ddb4b6 1145#ifdef CONFIG_ATA_ACPI
c05e6ff0
TH		 1146static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1147{
1148 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
1149 return &ap->__acpi_init_gtm;
1150 return NULL;
1151}
0d02f0b2
TH		 1152int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
1153int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
7c77fa4d
TH		 1154unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev,
1155 const struct ata_acpi_gtm *gtm);
30dcf76a
MG		 1156acpi_handle ata_ap_acpi_handle(struct ata_port *ap);
1157acpi_handle ata_dev_acpi_handle(struct ata_device *dev);
021ee9a6 1158int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm);
e1ddb4b6 1159#else
c05e6ff0
TH		 1160static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1161{
1162 return NULL;
1163}
7c77fa4d
TH		 1164
1165static inline int ata_acpi_stm(const struct ata_port *ap,
1166 struct ata_acpi_gtm *stm)
1167{
1168 return -ENOSYS;
1169}
1170
1171static inline int ata_acpi_gtm(const struct ata_port *ap,
1172 struct ata_acpi_gtm *stm)
1173{
1174 return -ENOSYS;
1175}
1176
1177static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
1178 const struct ata_acpi_gtm *gtm)
1179{
1180 return 0;
1181}
021ee9a6
TH		 1182
1183static inline int ata_acpi_cbl_80wire(struct ata_port *ap,
1184 const struct ata_acpi_gtm *gtm)
1185{
1186 return 0;
1187}
e1ddb4b6 1188#endif
1da177e4 1189
ece1d636 1190/*
624d5c51 1191 * EH - drivers/ata/libata-eh.c
ece1d636 1192 */
7b70fc03 1193extern void ata_port_schedule_eh(struct ata_port *ap);
81c757bc 1194extern void ata_port_wait_eh(struct ata_port *ap);
dbd82616 1195extern int ata_link_abort(struct ata_link *link);
7b70fc03 1196extern int ata_port_abort(struct ata_port *ap);
e3180499 1197extern int ata_port_freeze(struct ata_port *ap);
7d77b247 1198extern int sata_async_notification(struct ata_port *ap);
e3180499
TH		 1199
1200extern void ata_eh_freeze_port(struct ata_port *ap);
1201extern void ata_eh_thaw_port(struct ata_port *ap);
7b70fc03 1202
ece1d636
TH		 1203extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
1204extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
10acf3b0 1205extern void ata_eh_analyze_ncq_error(struct ata_link *link);
ece1d636 1206
f5914a46
TH		 1207extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
1208 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
1209 ata_postreset_fn_t postreset);
a1efdaba 1210extern void ata_std_error_handler(struct ata_port *ap);
e4a9c373
DW		 1211extern void ata_std_sched_eh(struct ata_port *ap);
1212extern void ata_std_end_eh(struct ata_port *ap);
8a745f1f 1213extern int ata_link_nr_enabled(struct ata_link *link);
022bdb07 1214
68d1d07b
TH		 1215/*
1216 * Base operations to inherit from and initializers for sht
1217 *
1218 * Operations
1219 *
1220 * base : Common to all libata drivers.
1221 * sata : SATA controllers w/ native interface.
1222 * pmp : SATA controllers w/ PMP support.
1223 * sff : SFF ATA controllers w/o BMDMA support.
1224 * bmdma : SFF ATA controllers w/ BMDMA support.
1225 *
1226 * sht initializers
1227 *
1228 * BASE : Common to all libata drivers. The user must set
1229 * sg_tablesize and dma_boundary.
1230 * PIO : SFF ATA controllers w/ only PIO support.
1231 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and
1232 * dma_boundary are set to BMDMA limits.
1233 * NCQ : SATA controllers supporting NCQ. The user must set
1234 * sg_tablesize, dma_boundary and can_queue.
1235 */
1236extern const struct ata_port_operations ata_base_port_ops;
1237extern const struct ata_port_operations sata_port_ops;
45fabbb7 1238extern struct device_attribute *ata_common_sdev_attrs[];
68d1d07b
TH		 1239
1240#define ATA_BASE_SHT(drv_name) \
1241 .module = THIS_MODULE, \
1242 .name = drv_name, \
1243 .ioctl = ata_scsi_ioctl, \
1244 .queuecommand = ata_scsi_queuecmd, \
1245 .can_queue = ATA_DEF_QUEUE, \
1246 .this_id = ATA_SHT_THIS_ID, \
1247 .cmd_per_lun = ATA_SHT_CMD_PER_LUN, \
1248 .emulated = ATA_SHT_EMULATED, \
1249 .use_clustering = ATA_SHT_USE_CLUSTERING, \
1250 .proc_name = drv_name, \
1251 .slave_configure = ata_scsi_slave_config, \
1252 .slave_destroy = ata_scsi_slave_destroy, \
45fabbb7 1253 .bios_param = ata_std_bios_param, \
d8d9129e 1254 .unlock_native_capacity = ata_scsi_unlock_native_capacity, \
45fabbb7 1255 .sdev_attrs = ata_common_sdev_attrs
68d1d07b 1256
68d1d07b
TH		 1257#define ATA_NCQ_SHT(drv_name) \
1258 ATA_BASE_SHT(drv_name), \
1259 .change_queue_depth = ata_scsi_change_queue_depth
1260
071f44b1
TH		 1261/*
1262 * PMP helpers
1263 */
88fcd562 1264#ifdef CONFIG_SATA_PMP
071f44b1
TH		 1265static inline bool sata_pmp_supported(struct ata_port *ap)
1266{
1267 return ap->flags & ATA_FLAG_PMP;
1268}
1269
1270static inline bool sata_pmp_attached(struct ata_port *ap)
1271{
1272 return ap->nr_pmp_links != 0;
1273}
1274
1275static inline int ata_is_host_link(const struct ata_link *link)
1276{
b1c72916 1277 return link == &link->ap->link || link == link->ap->slave_link;
071f44b1 1278}
88fcd562
TH		 1279#else /* CONFIG_SATA_PMP */
1280static inline bool sata_pmp_supported(struct ata_port *ap)
1281{
1282 return false;
1283}
1284
1285static inline bool sata_pmp_attached(struct ata_port *ap)
1286{
1287 return false;
1288}
1289
1290static inline int ata_is_host_link(const struct ata_link *link)
1291{
1292 return 1;
1293}
1294#endif /* CONFIG_SATA_PMP */
071f44b1
TH		 1295
1296static inline int sata_srst_pmp(struct ata_link *link)
1297{
1298 if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
1299 return SATA_PMP_CTRL_PORT;
1300 return link->pmp;
1301}
1302
61440db6
TH		 1303/*
1304 * printk helpers
1305 */
b9075fa9 1306__printf(3, 4)
a9a79dfe
JP		 1307int ata_port_printk(const struct ata_port *ap, const char *level,
1308 const char *fmt, ...);
b9075fa9 1309__printf(3, 4)
a9a79dfe
JP		 1310int ata_link_printk(const struct ata_link *link, const char *level,
1311 const char *fmt, ...);
b9075fa9 1312__printf(3, 4)
a9a79dfe
JP		 1313int ata_dev_printk(const struct ata_device *dev, const char *level,
1314 const char *fmt, ...);
1315
1316#define ata_port_err(ap, fmt, ...) \
1317 ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__)
1318#define ata_port_warn(ap, fmt, ...) \
1319 ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__)
1320#define ata_port_notice(ap, fmt, ...) \
1321 ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__)
1322#define ata_port_info(ap, fmt, ...) \
1323 ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__)
1324#define ata_port_dbg(ap, fmt, ...) \
1325 ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__)
1326
1327#define ata_link_err(link, fmt, ...) \
1328 ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__)
1329#define ata_link_warn(link, fmt, ...) \
1330 ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__)
1331#define ata_link_notice(link, fmt, ...) \
1332 ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__)
1333#define ata_link_info(link, fmt, ...) \
1334 ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__)
1335#define ata_link_dbg(link, fmt, ...) \
1336 ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__)
1337
1338#define ata_dev_err(dev, fmt, ...) \
1339 ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__)
1340#define ata_dev_warn(dev, fmt, ...) \
1341 ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__)
1342#define ata_dev_notice(dev, fmt, ...) \
1343 ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__)
1344#define ata_dev_info(dev, fmt, ...) \
1345 ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__)
1346#define ata_dev_dbg(dev, fmt, ...) \
1347 ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__)
1da177e4 1348
06296a1e
JP		 1349void ata_print_version(const struct device *dev, const char *version);
1350
f3e81b19
TH		 1351/*
1352 * ata_eh_info helpers
1353 */
b9075fa9
JP		 1354extern __printf(2, 3)
1355void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1356extern __printf(2, 3)
1357void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
b64bbc39 1358extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
f3e81b19 1359
c0b6c037
TH		 1360static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
1361{
b558eddd 1362 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
f8f1e1cc 1363 ehi->flags |= ATA_EHI_HOTPLUGGED;
b558eddd 1364 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;
c0b6c037
TH		 1365 ehi->err_mask |= AC_ERR_ATA_BUS;
1366}
1367
cbcdd875
TH		 1368/*
1369 * port description helpers
1370 */
b9075fa9
JP		 1371extern __printf(2, 3)
1372void ata_port_desc(struct ata_port *ap, const char *fmt, ...);
cbcdd875
TH		 1373#ifdef CONFIG_PCI
1374extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
1375 const char *name);
1376#endif
1377
1da177e4
LT		 1378static inline unsigned int ata_tag_valid(unsigned int tag)
1379{
1380 return (tag < ATA_MAX_QUEUE) ? 1 : 0;
1381}
1382
2ab7db1f
TH		 1383static inline unsigned int ata_tag_internal(unsigned int tag)
1384{
83c063dd 1385 return tag == ATA_TAG_INTERNAL;
2ab7db1f
TH		 1386}
1387
5806db22
TH		 1388/*
1389 * device helpers
1390 */
e1211e3f 1391static inline unsigned int ata_class_enabled(unsigned int class)
597afd21 1392{
e0a71752
TH		 1393 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
1394 class == ATA_DEV_PMP || class == ATA_DEV_SEMB;
597afd21
TH		 1395}
1396
e1211e3f 1397static inline unsigned int ata_class_disabled(unsigned int class)
1da177e4 1398{
e0a71752
TH		 1399 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
1400 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP;
e1211e3f
TH		 1401}
1402
002c8054
TH		 1403static inline unsigned int ata_class_absent(unsigned int class)
1404{
1405 return !ata_class_enabled(class) && !ata_class_disabled(class);
1406}
1407
e1211e3f
TH		 1408static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
1409{
1410 return ata_class_enabled(dev->class);
1411}
1412
1413static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
1414{
1415 return ata_class_disabled(dev->class);
1da177e4
LT		 1416}
1417
002c8054
TH		 1418static inline unsigned int ata_dev_absent(const struct ata_device *dev)
1419{
1420 return ata_class_absent(dev->class);
1421}
1422
5806db22 1423/*
f58229f8 1424 * link helpers
5806db22 1425 */
f58229f8 1426static inline int ata_link_max_devices(const struct ata_link *link)
5806db22 1427{
8989805d 1428 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS)
5806db22
TH		 1429 return 2;
1430 return 1;
1431}
1432
da917d69
TH		 1433static inline int ata_link_active(struct ata_link *link)
1434{
1435 return ata_tag_valid(link->active_tag) || link->sactive;
1436}
1437
1eca4365
TH		 1438/*
1439 * Iterators
1440 *
1441 * ATA_LITER_* constants are used to select link iteration mode and
1442 * ATA_DITER_* device iteration mode.
1443 *
1444 * For a custom iteration directly using ata_{link|dev}_next(), if
1445 * @link or @dev, respectively, is NULL, the first element is
1446 * returned. @dev and @link can be any valid device or link and the
1447 * next element according to the iteration mode will be returned.
1448 * After the last element, NULL is returned.
1449 */
1450enum ata_link_iter_mode {
1451 ATA_LITER_EDGE, /* if present, PMP links only; otherwise,
1452 * host link. no slave link */
1453 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */
1454 ATA_LITER_PMP_FIRST, /* PMP links followed by host link,
1455 * slave link still comes after host link */
1456};
1457
1458enum ata_dev_iter_mode {
1459 ATA_DITER_ENABLED,
1460 ATA_DITER_ENABLED_REVERSE,
1461 ATA_DITER_ALL,
1462 ATA_DITER_ALL_REVERSE,
1463};
1464
1465extern struct ata_link *ata_link_next(struct ata_link *link,
1466 struct ata_port *ap,
1467 enum ata_link_iter_mode mode);
1468
1469extern struct ata_device *ata_dev_next(struct ata_device *dev,
1470 struct ata_link *link,
1471 enum ata_dev_iter_mode mode);
1472
1473/*
1474 * Shortcut notation for iterations
1475 *
1476 * ata_for_each_link() iterates over each link of @ap according to
1477 * @mode. @link points to the current link in the loop. @link is
1478 * NULL after loop termination. ata_for_each_dev() works the same way
1479 * except that it iterates over each device of @link.
1480 *
1481 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be
1482 * specified when using the following shorthand notations. Only the
1483 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be
1484 * specified. This not only increases brevity but also makes it
1485 * impossible to use ATA_LITER_* for device iteration or vice-versa.
1486 */
1487#define ata_for_each_link(link, ap, mode) \
1488 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1489 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1490
1491#define ata_for_each_dev(dev, link, mode) \
1492 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1493 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
5806db22 1494
6d1245bf
TH		 1495/**
1496 * ata_ncq_enabled - Test whether NCQ is enabled
1497 * @dev: ATA device to test for
1498 *
1499 * LOCKING:
1500 * spin_lock_irqsave(host lock)
1501 *
1502 * RETURNS:
1503 * 1 if NCQ is enabled for @dev, 0 otherwise.
1504 */
1505static inline int ata_ncq_enabled(struct ata_device *dev)
1506{
1507 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF |
1508 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
1509}
0baab86b 1510
1da177e4
LT		 1511static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
1512{
1513 qc->tf.ctl |= ATA_NIEN;
1514}
1515
f69499f4
TH		 1516static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
1517 unsigned int tag)
1da177e4
LT		 1518{
1519 if (likely(ata_tag_valid(tag)))
1520 return &ap->qcmd[tag];
1521 return NULL;
1522}
1523
f69499f4
TH		 1524static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
1525 unsigned int tag)
1526{
1527 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
1528
1529 if (unlikely(!qc) || !ap->ops->error_handler)
1530 return qc;
1531
1532 if ((qc->flags & (ATA_QCFLAG_ACTIVE |
1533 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE)
1534 return qc;
1535
1536 return NULL;
1537}
1538
aacda375
TH		 1539static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc)
1540{
1541 return qc->nbytes - min(qc->extrabytes, qc->nbytes);
1542}
1543
3373efd8 1544static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
1da177e4
LT		 1545{
1546 memset(tf, 0, sizeof(*tf));
1547
5fe7454a 1548#ifdef CONFIG_ATA_SFF
9af5c9c9 1549 tf->ctl = dev->link->ap->ctl;
5fe7454a
TH		 1550#else
1551 tf->ctl = ATA_DEVCTL_OBS;
1552#endif
3373efd8 1553 if (dev->devno == 0)
1da177e4
LT		 1554 tf->device = ATA_DEVICE_OBS;
1555 else
1556 tf->device = ATA_DEVICE_OBS | ATA_DEV1;
1557}
1558
2c13b7ce
JG		 1559static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
1560{
501e0c50 1561 qc->dma_dir = DMA_NONE;
ff2aeb1e 1562 qc->sg = NULL;
2c13b7ce 1563 qc->flags = 0;
87260216
JA		 1564 qc->cursg = NULL;
1565 qc->cursg_ofs = 0;
aacda375 1566 qc->nbytes = qc->extrabytes = qc->curbytes = 0;
7a801184 1567 qc->n_elem = 0;
a22e2eb0 1568 qc->err_mask = 0;
5a5dbd18 1569 qc->sect_size = ATA_SECT_SIZE;
2c13b7ce 1570
3373efd8 1571 ata_tf_init(qc->dev, &qc->tf);
e61e0672
TH		 1572
1573 /* init result_tf such that it indicates normal completion */
1574 qc->result_tf.command = ATA_DRDY;
1575 qc->result_tf.feature = 0;
2c13b7ce
JG		 1576}
1577
057ace5e 1578static inline int ata_try_flush_cache(const struct ata_device *dev)
1da177e4
LT		 1579{
1580 return ata_id_wcache_enabled(dev->id) ||
1581 ata_id_has_flush(dev->id) ||
1582 ata_id_has_flush_ext(dev->id);
1583}
1584
a7dac447
JG		 1585static inline unsigned int ac_err_mask(u8 status)
1586{
3655d1d3 1587 if (status & (ATA_BUSY | ATA_DRQ))
11a56d24 1588 return AC_ERR_HSM;
a7dac447
JG		 1589 if (status & (ATA_ERR | ATA_DF))
1590 return AC_ERR_DEV;
1591 return 0;
1592}
1593
1594static inline unsigned int __ac_err_mask(u8 status)
1595{
1596 unsigned int mask = ac_err_mask(status);
1597 if (mask == 0)
1598 return AC_ERR_OTHER;
1599 return mask;
1600}
1601
35bb94b1
JG		 1602static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
1603{
4911487a 1604 return *(struct ata_port **)&host->hostdata[0];
35bb94b1
JG		 1605}
1606
78ab88f0
TH		 1607static inline int ata_check_ready(u8 status)
1608{
005b1f74
JG		 1609 if (!(status & ATA_BUSY))
1610 return 1;
78ab88f0
TH		 1611
1612 /* 0xff indicates either no device or device not ready */
1613 if (status == 0xff)
1614 return -ENODEV;
1615
005b1f74 1616 return 0;
78ab88f0
TH		 1617}
1618
341c2c95
TH		 1619static inline unsigned long ata_deadline(unsigned long from_jiffies,
1620 unsigned long timeout_msecs)
1621{
1622 return from_jiffies + msecs_to_jiffies(timeout_msecs);
1623}
1624
b15b3eba
AC		 1625/* Don't open code these in drivers as there are traps. Firstly the range may
1626 change in future hardware and specs, secondly 0xFF means 'no DMA' but is
1627 > UDMA_0. Dyma ddreigiau */
1628
1629static inline int ata_using_mwdma(struct ata_device *adev)
1630{
1631 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4)
1632 return 1;
1633 return 0;
1634}
1635
1636static inline int ata_using_udma(struct ata_device *adev)
1637{
1638 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7)
1639 return 1;
1640 return 0;
1641}
1642
1643static inline int ata_dma_enabled(struct ata_device *adev)
1644{
1645 return (adev->dma_mode == 0xFF ? 0 : 1);
1646}
48515f6c
TH		 1647
1648/**************************************************************************
1649 * PMP - drivers/ata/libata-pmp.c
1650 */
88fcd562
TH		 1651#ifdef CONFIG_SATA_PMP
1652
48515f6c
TH		 1653extern const struct ata_port_operations sata_pmp_port_ops;
1654
1655extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
1656extern void sata_pmp_error_handler(struct ata_port *ap);
1657
88fcd562
TH		 1658#else /* CONFIG_SATA_PMP */
1659
1660#define sata_pmp_port_ops sata_port_ops
1661#define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1662#define sata_pmp_error_handler ata_std_error_handler
1663
1664#endif /* CONFIG_SATA_PMP */
1665
48515f6c 1666
624d5c51
TH		 1667/**************************************************************************
1668 * SFF - drivers/ata/libata-sff.c
1669 */
127102ae
TH		 1670#ifdef CONFIG_ATA_SFF
1671
624d5c51 1672extern const struct ata_port_operations ata_sff_port_ops;
871af121 1673extern const struct ata_port_operations ata_bmdma32_port_ops;
624d5c51
TH		 1674
1675/* PIO only, sg_tablesize and dma_boundary limits can be removed */
1676#define ATA_PIO_SHT(drv_name) \
1677 ATA_BASE_SHT(drv_name), \
1678 .sg_tablesize = LIBATA_MAX_PRD, \
1679 .dma_boundary = ATA_DMA_BOUNDARY
1680
9363c382
TH		 1681extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
1682extern u8 ata_sff_check_status(struct ata_port *ap);
a57c1bad
AC		 1683extern void ata_sff_pause(struct ata_port *ap);
1684extern void ata_sff_dma_pause(struct ata_port *ap);
9363c382
TH		 1685extern int ata_sff_busy_sleep(struct ata_port *ap,
1686 unsigned long timeout_pat, unsigned long timeout);
705e76be 1687extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline);
9363c382
TH		 1688extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
1689extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
1690extern void ata_sff_exec_command(struct ata_port *ap,
1691 const struct ata_taskfile *tf);
1692extern unsigned int ata_sff_data_xfer(struct ata_device *dev,
624d5c51 1693 unsigned char *buf, unsigned int buflen, int rw);
871af121
AC		 1694extern unsigned int ata_sff_data_xfer32(struct ata_device *dev,
1695 unsigned char *buf, unsigned int buflen, int rw);
9363c382 1696extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev,
624d5c51 1697 unsigned char *buf, unsigned int buflen, int rw);
e42a542b 1698extern void ata_sff_irq_on(struct ata_port *ap);
9363c382
TH		 1699extern void ata_sff_irq_clear(struct ata_port *ap);
1700extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
1701 u8 status, int in_wq);
64b97594
VK		 1702extern void ata_sff_queue_work(struct work_struct *work);
1703extern void ata_sff_queue_delayed_work(struct delayed_work *dwork,
1704 unsigned long delay);
ea3c6450 1705extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay);
9363c382 1706extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
22183bf5 1707extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
c3b28894 1708extern unsigned int ata_sff_port_intr(struct ata_port *ap,
9363c382
TH		 1709 struct ata_queued_cmd *qc);
1710extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
c96f1732 1711extern void ata_sff_lost_interrupt(struct ata_port *ap);
9363c382
TH		 1712extern void ata_sff_freeze(struct ata_port *ap);
1713extern void ata_sff_thaw(struct ata_port *ap);
1714extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
1715extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
1716 u8 *r_err);
705e76be
TH		 1717extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
1718 unsigned long deadline);
9363c382 1719extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
624d5c51 1720 unsigned long deadline);
9363c382
TH		 1721extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
1722 unsigned long deadline);
1723extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
3d47aa8e 1724extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
9363c382 1725extern void ata_sff_error_handler(struct ata_port *ap);
9363c382 1726extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
624d5c51 1727#ifdef CONFIG_PCI
9363c382
TH		 1728extern int ata_pci_sff_init_host(struct ata_host *host);
1729extern int ata_pci_sff_prepare_host(struct pci_dev *pdev,
624d5c51
TH		 1730 const struct ata_port_info * const * ppi,
1731 struct ata_host **r_host);
9363c382 1732extern int ata_pci_sff_activate_host(struct ata_host *host,
624d5c51
TH		 1733 irq_handler_t irq_handler,
1734 struct scsi_host_template *sht);
9363c382 1735extern int ata_pci_sff_init_one(struct pci_dev *pdev,
16ea0fc9
AC		 1736 const struct ata_port_info * const * ppi,
1737 struct scsi_host_template *sht, void *host_priv, int hflags);
624d5c51
TH		 1738#endif /* CONFIG_PCI */
1739
9a7780c9
TH		 1740#ifdef CONFIG_ATA_BMDMA
1741
1742extern const struct ata_port_operations ata_bmdma_port_ops;
1743
1744#define ATA_BMDMA_SHT(drv_name) \
1745 ATA_BASE_SHT(drv_name), \
1746 .sg_tablesize = LIBATA_MAX_PRD, \
1747 .dma_boundary = ATA_DMA_BOUNDARY
1748
f47451c4 1749extern void ata_bmdma_qc_prep(struct ata_queued_cmd *qc);
360ff783 1750extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc);
f47451c4 1751extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc);
c3b28894
TH		 1752extern unsigned int ata_bmdma_port_intr(struct ata_port *ap,
1753 struct ata_queued_cmd *qc);
1754extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance);
fe06e5f9
TH		 1755extern void ata_bmdma_error_handler(struct ata_port *ap);
1756extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
37f65b8b 1757extern void ata_bmdma_irq_clear(struct ata_port *ap);
9f2f7210
TH		 1758extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
1759extern void ata_bmdma_start(struct ata_queued_cmd *qc);
1760extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
1761extern u8 ata_bmdma_status(struct ata_port *ap);
c7087652
TH		 1762extern int ata_bmdma_port_start(struct ata_port *ap);
1763extern int ata_bmdma_port_start32(struct ata_port *ap);
9f2f7210
TH		 1764
1765#ifdef CONFIG_PCI
1766extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
c7087652 1767extern void ata_pci_bmdma_init(struct ata_host *host);
1c5afdf7
TH		 1768extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev,
1769 const struct ata_port_info * const * ppi,
1770 struct ata_host **r_host);
1771extern int ata_pci_bmdma_init_one(struct pci_dev *pdev,
1772 const struct ata_port_info * const * ppi,
1773 struct scsi_host_template *sht,
1774 void *host_priv, int hflags);
9f2f7210 1775#endif /* CONFIG_PCI */
9a7780c9 1776#endif /* CONFIG_ATA_BMDMA */
9f2f7210 1777
624d5c51 1778/**
9363c382 1779 * ata_sff_busy_wait - Wait for a port status register
624d5c51
TH		 1780 * @ap: Port to wait for.
1781 * @bits: bits that must be clear
1782 * @max: number of 10uS waits to perform
1783 *
1784 * Waits up to max*10 microseconds for the selected bits in the port's
1785 * status register to be cleared.
1786 * Returns final value of status register.
1787 *
1788 * LOCKING:
1789 * Inherited from caller.
1790 */
9363c382
TH		 1791static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits,
1792 unsigned int max)
624d5c51
TH		 1793{
1794 u8 status;
1795
1796 do {
1797 udelay(10);
5682ed33 1798 status = ap->ops->sff_check_status(ap);
624d5c51
TH		 1799 max--;
1800 } while (status != 0xff && (status & bits) && (max > 0));
1801
1802 return status;
1803}
1804
1805/**
1806 * ata_wait_idle - Wait for a port to be idle.
1807 * @ap: Port to wait for.
1808 *
1809 * Waits up to 10ms for port's BUSY and DRQ signals to clear.
1810 * Returns final value of status register.
1811 *
1812 * LOCKING:
1813 * Inherited from caller.
1814 */
1815static inline u8 ata_wait_idle(struct ata_port *ap)
1816{
9363c382 1817 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
624d5c51
TH		 1818
1819#ifdef ATA_DEBUG
1820 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
1821 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n",
1822 status);
1823#endif
1824
1825 return status;
1826}
127102ae 1827#endif /* CONFIG_ATA_SFF */
624d5c51 1828
1da177e4 1829#endif /* __LINUX_LIBATA_H__ */