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