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Merge branch 'mailbox-devel' of git://git.linaro.org/landing-teams/working/fujitsu...
[deliverable/linux.git] / include / linux / libata.h
CommitLineData
1da177e4 1/*
af36d7f0
JG		 2 * Copyright 2003-2005 Red Hat, Inc. All rights reserved.
3 * Copyright 2003-2005 Jeff Garzik
4 *
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2, or (at your option)
9 * any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; see the file COPYING. If not, write to
18 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
19 *
20 *
21 * libata documentation is available via 'make {ps|pdf}docs',
22 * as Documentation/DocBook/libata.*
23 *
1da177e4
LT		 24 */
25
26#ifndef __LINUX_LIBATA_H__
27#define __LINUX_LIBATA_H__
28
29#include <linux/delay.h>
341c2c95 30#include <linux/jiffies.h>
1da177e4 31#include <linux/interrupt.h>
1c72d8d9 32#include <linux/dma-mapping.h>
87260216 33#include <linux/scatterlist.h>
f0d36efd 34#include <linux/io.h>
1da177e4
LT		 35#include <linux/ata.h>
36#include <linux/workqueue.h>
35bb94b1 37#include <scsi/scsi_host.h>
11ef697b 38#include <linux/acpi.h>
ceb0c642 39#include <linux/cdrom.h>
c0c362b6 40#include <linux/sched.h>
1da177e4 41
a6d967a4
JG		 42/*
43 * Define if arch has non-standard setup. This is a _PCI_ standard
44 * not a legacy or ISA standard.
45 */
46#ifdef CONFIG_ATA_NONSTANDARD
2ec7df04 47#include <asm/libata-portmap.h>
a6d967a4
JG		 48#else
49#include <asm-generic/libata-portmap.h>
50#endif
2ec7df04 51
1da177e4 52/*
bfd60579
RD		 53 * compile-time options: to be removed as soon as all the drivers are
54 * converted to the new debugging mechanism
1da177e4
LT		 55 */
56#undef ATA_DEBUG /* debugging output */
57#undef ATA_VERBOSE_DEBUG /* yet more debugging output */
58#undef ATA_IRQ_TRAP /* define to ack screaming irqs */
59#undef ATA_NDEBUG /* define to disable quick runtime checks */
1da177e4
LT		 60
61
62/* note: prints function name for you */
63#ifdef ATA_DEBUG
1f938d06 64#define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
1da177e4 65#ifdef ATA_VERBOSE_DEBUG
1f938d06 66#define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
1da177e4
LT		 67#else
68#define VPRINTK(fmt, args...)
69#endif /* ATA_VERBOSE_DEBUG */
70#else
71#define DPRINTK(fmt, args...)
72#define VPRINTK(fmt, args...)
73#endif /* ATA_DEBUG */
74
1f938d06 75#define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args)
2c13b7ce 76
06296a1e
JP		 77#define ata_print_version_once(dev, version) \
78({ \
79 static bool __print_once; \
80 \
81 if (!__print_once) { \
82 __print_once = true; \
83 ata_print_version(dev, version); \
84 } \
85})
86
bfd60579
RD		 87/* NEW: debug levels */
88#define HAVE_LIBATA_MSG 1
89
90enum {
91 ATA_MSG_DRV = 0x0001,
92 ATA_MSG_INFO = 0x0002,
93 ATA_MSG_PROBE = 0x0004,
94 ATA_MSG_WARN = 0x0008,
95 ATA_MSG_MALLOC = 0x0010,
96 ATA_MSG_CTL = 0x0020,
97 ATA_MSG_INTR = 0x0040,
98 ATA_MSG_ERR = 0x0080,
99};
100
101#define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV)
102#define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO)
103#define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE)
104#define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN)
105#define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
106#define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL)
107#define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR)
108#define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR)
109
110static inline u32 ata_msg_init(int dval, int default_msg_enable_bits)
111{
112 if (dval < 0 || dval >= (sizeof(u32) * 8))
113 return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */
114 if (!dval)
115 return 0;
116 return (1 << dval) - 1;
117}
118
1da177e4
LT		 119/* defines only for the constants which don't work well as enums */
120#define ATA_TAG_POISON 0xfafbfcfdU
121
1da177e4
LT		 122enum {
123 /* various global constants */
124 LIBATA_MAX_PRD = ATA_MAX_PRD / 2,
d26fc955 125 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */
1da177e4 126 ATA_DEF_QUEUE = 1,
2ab7db1f 127 /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */
a6e6ce8e 128 ATA_MAX_QUEUE = 32,
2ab7db1f 129 ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1,
341c2c95 130 ATA_SHORT_PAUSE = 16,
1da177e4 131
140b5e59
TH		 132 ATAPI_MAX_DRAIN = 16 << 10,
133
b558eddd
TH		 134 ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1,
135
1da177e4 136 ATA_SHT_EMULATED = 1,
1da177e4 137 ATA_SHT_THIS_ID = -1,
cf482935 138 ATA_SHT_USE_CLUSTERING = 1,
1da177e4 139
dc34e7e1
SS		 140 /* struct ata_taskfile flags */
141 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
142 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
143 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
144 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
145 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */
146 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */
147 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */
148
149 /* protocol flags */
150 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */
151 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */
152 ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA,
153 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */
154 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */
155
1da177e4 156 /* struct ata_device stuff */
949b38af
TH		 157 ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */
158 ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */
029f5468 159 ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */
88e49034 160 ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */
6fc49adb 161 ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */
6746544c
TH		 162 ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */
163 ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */
7d77b247 164 ATA_DFLAG_AN = (1 << 7), /* AN configured */
91163006 165 ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */
2557164e 166 ATA_DFLAG_CFG_MASK = (1 << 12) - 1,
949b38af 167
2557164e
KCA		 168 ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */
169 ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */
054a5fba 170 ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */
00115e0f 171 ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */
45fabbb7 172 ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */
445d211b 173 ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */
ed36911c 174 ATA_DFLAG_NCQ_SEND_RECV = (1 << 19), /* device supports NCQ SEND and RECV */
f20ded38 175 ATA_DFLAG_INIT_MASK = (1 << 24) - 1,
1da177e4 176
f20ded38
TH		 177 ATA_DFLAG_DETACH = (1 << 24),
178 ATA_DFLAG_DETACHED = (1 << 25),
abdda733 179
b1354cbb 180 ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */
65fe1f0f 181 ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */
0d0cdb02 182 ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */
b1354cbb 183
1da177e4
LT		 184 ATA_DEV_UNKNOWN = 0, /* unknown device */
185 ATA_DEV_ATA = 1, /* ATA device */
186 ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */
187 ATA_DEV_ATAPI = 3, /* ATAPI device */
188 ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */
e0a71752
TH		 189 ATA_DEV_PMP = 5, /* SATA port multiplier */
190 ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */
191 ATA_DEV_SEMB = 7, /* SEMB */
192 ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */
9162c657
HR		 193 ATA_DEV_ZAC = 9, /* ZAC device */
194 ATA_DEV_NONE = 10, /* no device */
1da177e4 195
0c88758b 196 /* struct ata_link flags */
05944bdf 197 ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */
ae791c05
TH		 198 ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */
199 ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */
200 ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */
201 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB,
fd995f70 202 ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */
f9df58cb 203 ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */
18f7ba4c 204 ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */
6b7ae954 205 ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */
ca6d43b0 206 ATA_LFLAG_RST_ONCE = (1 << 9), /* limit recovery to one reset */
09c5b480 207 ATA_LFLAG_CHANGED = (1 << 10), /* LPM state changed on this link */
e39b2bb3 208 ATA_LFLAG_NO_DB_DELAY = (1 << 11), /* no debounce delay on link resume */
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),
ea013a9b 214 ATA_FLAG_NO_LOG_PAGE = (1 << 5), /* do not issue log page read */
949b38af
TH		 215 ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */
216 ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */
217 ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */
7395acb2
TH		 218 ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD
219 * doesn't handle PIO interrupts */
220 ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */
2a6e58d2
RW		 221 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */
222 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */
7395acb2 223 ATA_FLAG_DEBUGMSG = (1 << 13),
388539f3 224 ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */
b2a8bbe6 225 ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */
f834e49f 226 ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */
3cadbcc0 227 ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */
9f45cbd3 228 ATA_FLAG_AN = (1 << 18), /* controller supports AN */
e0a71752 229 ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */
40fb59e7 230 ATA_FLAG_FPDMA_AUX = (1 << 20), /* controller supports H2DFIS aux field */
18f7ba4c
KCA		 231 ATA_FLAG_EM = (1 << 21), /* driver supports enclosure
232 * management */
233 ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity
234 * led */
ae01b249 235 ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */
a1480a16 236 ATA_FLAG_SAS_HOST = (1 << 24), /* SAS host */
949b38af 237
b51e9e5d 238 /* bits 24:31 of ap->flags are reserved for LLD specific flags */
9ec957f2 239
e3cf95dd 240
b51e9e5d
TH		 241 /* struct ata_port pflags */
242 ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */
243 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */
244 ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */
245 ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */
246 ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */
b51e9e5d 247 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */
f4d6d004 248 ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */
afaa5c37 249 ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */
ece180d1
TH		 250 ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */
251 ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */
949b38af 252
b51e9e5d 253 ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */
500530f6 254 ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */
c05e6ff0 255 ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */
949b38af 256
e3cf95dd
AC		 257 ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */
258 ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */
8a3e33cf 259 ATA_PFLAG_EXTERNAL = (1 << 22), /* eSATA/external port */
e3cf95dd 260
949b38af
TH		 261 /* struct ata_queued_cmd flags */
262 ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */
001102d7 263 ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */
27197367 264 ATA_QCFLAG_IO = (1 << 3), /* standard IO command */
e61e0672 265 ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */
da917d69 266 ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */
e027bd36 267 ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */
03faab78 268 ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */
e61e0672 269
9ec957f2
TH		 270 ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */
271 ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */
272 ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */
1da177e4 273
4e5ec5db 274 /* host set flags */
cca3974e 275 ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */
ecef7253 276 ATA_HOST_STARTED = (1 << 1), /* Host started */
886ad09f 277 ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */
db63a4c8 278 ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */
9bec2e38 279
b8b275ef
TH		 280 /* bits 24:31 of host->flags are reserved for LLD specific flags */
281
1da177e4 282 /* various lengths of time */
341c2c95
TH		 283 ATA_TMOUT_BOOT = 30000, /* heuristic */
284 ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */
341c2c95 285 ATA_TMOUT_INTERNAL_QUICK = 5000,
45fabbb7 286 ATA_TMOUT_MAX_PARK = 30000,
1da177e4 287
b48d58f5
TH		 288 /*
289 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s
290 * is too much without parallel probing. Use 2s if parallel
291 * probing is available, 800ms otherwise.
88ff6eaf 292 */
b48d58f5
TH		 293 ATA_TMOUT_FF_WAIT_LONG = 2000,
294 ATA_TMOUT_FF_WAIT = 800,
88ff6eaf 295
705e76be
TH		 296 /* Spec mandates to wait for ">= 2ms" before checking status
297 * after reset. We wait 150ms, because that was the magic
298 * delay used for ATAPI devices in Hale Landis's ATADRVR, for
299 * the period of time between when the ATA command register is
300 * written, and then status is checked. Because waiting for
301 * "a while" before checking status is fine, post SRST, we
302 * perform this magic delay here as well.
303 *
304 * Old drivers/ide uses the 2mS rule and then waits for ready.
305 */
341c2c95 306 ATA_WAIT_AFTER_RESET = 150,
705e76be 307
9dadd45b
TH		 308 /* If PMP is supported, we have to do follow-up SRST. As some
309 * PMPs don't send D2H Reg FIS after hardreset, LLDs are
310 * advised to wait only for the following duration before
311 * doing SRST.
312 */
e7d3ef13 313 ATA_TMOUT_PMP_SRST_WAIT = 5000,
9dadd45b 314
09c5b480
GM		 315 /* When the LPM policy is set to ATA_LPM_MAX_POWER, there might
316 * be a spurious PHY event, so ignore the first PHY event that
317 * occurs within 10s after the policy change.
318 */
319 ATA_TMOUT_SPURIOUS_PHY = 10000,
320
1da177e4
LT		 321 /* ATA bus states */
322 BUS_UNKNOWN = 0,
323 BUS_DMA = 1,
324 BUS_IDLE = 2,
325 BUS_NOINTR = 3,
326 BUS_NODATA = 4,
327 BUS_TIMER = 5,
328 BUS_PIO = 6,
329 BUS_EDD = 7,
330 BUS_IDENTIFY = 8,
331 BUS_PACKET = 9,
332
333 /* SATA port states */
334 PORT_UNKNOWN = 0,
335 PORT_ENABLED = 1,
336 PORT_DISABLED = 2,
337
338 /* encoding various smaller bitmaps into a single
7dc951ae 339 * unsigned long bitmap
1da177e4 340 */
70cd071e
TH		 341 ATA_NR_PIO_MODES = 7,
342 ATA_NR_MWDMA_MODES = 5,
343 ATA_NR_UDMA_MODES = 8,
1da7b0d0
TH		 344
345 ATA_SHIFT_PIO = 0,
70cd071e
TH		 346 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES,
347 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES,
348
cedc9a47
JG		 349 /* size of buffer to pad xfers ending on unaligned boundaries */
350 ATA_DMA_PAD_SZ = 4,
949b38af 351
0c247c55
TH		 352 /* ering size */
353 ATA_ERING_SIZE = 32,
354
31cc23b3
TH		 355 /* return values for ->qc_defer */
356 ATA_DEFER_LINK = 1,
357 ATA_DEFER_PORT = 2,
358
f3e81b19
TH		 359 /* desc_len for ata_eh_info and context */
360 ATA_EH_DESC_LEN = 80,
361
9be1e979
TH		 362 /* reset / recovery action types */
363 ATA_EH_REVALIDATE = (1 << 0),
cf480626
TH		 364 ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */
365 ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */
366 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
f9df58cb 367 ATA_EH_ENABLE_LINK = (1 << 3),
45fabbb7 368 ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */
9be1e979 369
45fabbb7 370 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK,
b5b3fa38 371 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET |
6b7ae954 372 ATA_EH_ENABLE_LINK,
9be1e979 373
f3e81b19 374 /* ata_eh_info->flags */
abdda733 375 ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */
1cdaf534
TH		 376 ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */
377 ATA_EHI_QUIET = (1 << 3), /* be quiet */
e2f3d75f 378 ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */
abdda733 379
0d64a233
TH		 380 ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */
381 ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */
382 ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */
383 ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */
89692c03 384 ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */
f3e81b19 385
0d64a233 386 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
13abf50d 387
848e4c68
TH		 388 /* mask of flags to transfer *to* the slave link */
389 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET,
390
a1e10f7e
TH		 391 /* max tries if error condition is still set after ->error_handler */
392 ATA_EH_MAX_TRIES = 5,
ad9e2762 393
5040ab67
TH		 394 /* sometimes resuming a link requires several retries */
395 ATA_LINK_RESUME_TRIES = 5,
396
14d2bac1
TH		 397 /* how hard are we gonna try to probe/recover devices */
398 ATA_PROBE_MAX_TRIES = 3,
022bdb07 399 ATA_EH_DEV_TRIES = 3,
e0a71752
TH		 400 ATA_EH_PMP_TRIES = 5,
401 ATA_EH_PMP_LINK_TRIES = 3,
402
bf1bff6f 403 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */
f5914a46 404
87fbc5a0
TH		 405 /* This should match the actual table size of
406 * ata_eh_cmd_timeout_table in libata-eh.c.
407 */
6013efd8 408 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6,
87fbc5a0 409
93590859 410 /* Horkage types. May be set by libata or controller on drives
25985edc 411 (some horkage may be drive/controller pair dependent */
93590859
AC		 412
413 ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */
6919a0a6
AC		 414 ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */
415 ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */
18d6e9d5 416 ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */
16c55b03 417 ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */
50af2fa1 418 ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */
93328e11 419 ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */
6bbfd53d 420 ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */
2d3b8eea 421 ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */
9ce8e307 422 ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */
6a87e42e
TH		 423 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands
424 not multiple of 16 bytes */
877d0310 425 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */
9062712f 426 ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */
d0cb43b3 427 ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */
388539f3 428 ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */
43c9c591 429 ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */
a32450e1 430 ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17), /* Set max sects to 65535 */
966fbe19 431 ATA_HORKAGE_ATAPI_DMADIR = (1 << 18), /* device requires dmadir */
f78dea06 432 ATA_HORKAGE_NO_NCQ_TRIM = (1 << 19), /* don't use queued TRIM */
ecd75ad5
TH		 433 ATA_HORKAGE_NOLPM = (1 << 20), /* don't use LPM */
434 ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21), /* some WDs have broken LPM */
e61f7d1c 435 ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),/* guarantees zero after trim */
5d3abf8f 436 ATA_HORKAGE_NO_NCQ_LOG = (1 << 23), /* don't use NCQ for log read */
71d126fd 437 ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */
af34d637 438 ATA_HORKAGE_MAX_SEC_1024 = (1 << 25), /* Limit max sects to 1024 */
b3a70601 439
2dcb407e 440 /* DMA mask for user DMA control: User visible values; DO NOT
b3a70601
AC		 441 renumber */
442 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */
443 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */
444 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */
ceb0c642
TH		 445
446 /* ATAPI command types */
447 ATAPI_READ = 0, /* READs */
448 ATAPI_WRITE = 1, /* WRITEs */
449 ATAPI_READ_CD = 2, /* READ CD [MSF] */
e52dcc48
TH		 450 ATAPI_PASS_THRU = 3, /* SAT pass-thru */
451 ATAPI_MISC = 4, /* the rest */
624d5c51
TH		 452
453 /* Timing constants */
454 ATA_TIMING_SETUP = (1 << 0),
455 ATA_TIMING_ACT8B = (1 << 1),
456 ATA_TIMING_REC8B = (1 << 2),
457 ATA_TIMING_CYC8B = (1 << 3),
458 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
459 ATA_TIMING_CYC8B,
460 ATA_TIMING_ACTIVE = (1 << 4),
461 ATA_TIMING_RECOVER = (1 << 5),
3ada9c12
DD		 462 ATA_TIMING_DMACK_HOLD = (1 << 6),
463 ATA_TIMING_CYCLE = (1 << 7),
464 ATA_TIMING_UDMA = (1 << 8),
624d5c51
TH		 465 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
466 ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
467 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
3ada9c12
DD		 468 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE |
469 ATA_TIMING_UDMA,
f1bce7f8
TH		 470
471 /* ACPI constants */
472 ATA_ACPI_FILTER_SETXFER = 1 << 0,
473 ATA_ACPI_FILTER_LOCK = 1 << 1,
474 ATA_ACPI_FILTER_DIPM = 1 << 2,
fa5b561c
TH		 475 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */
476 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */
f1bce7f8
TH		 477
478 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER |
479 ATA_ACPI_FILTER_LOCK |
480 ATA_ACPI_FILTER_DIPM,
1da177e4
LT		 481};
482
7dc951ae
TH		 483enum ata_xfer_mask {
484 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1)
485 << ATA_SHIFT_PIO,
486 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1)
487 << ATA_SHIFT_MWDMA,
488 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1)
489 << ATA_SHIFT_UDMA,
490};
491
14be71f4 492enum hsm_task_states {
c56b14d2 493 HSM_ST_IDLE, /* no command on going */
71527647
AL		 494 HSM_ST_FIRST, /* (waiting the device to)
495 write CDB or first data block */
c56b14d2
AL		 496 HSM_ST, /* (waiting the device to) transfer data */
497 HSM_ST_LAST, /* (waiting the device to) complete command */
c56b14d2 498 HSM_ST_ERR, /* error */
1da177e4
LT		 499};
500
a7dac447 501enum ata_completion_errors {
11a56d24
TH		 502 AC_ERR_DEV = (1 << 0), /* device reported error */
503 AC_ERR_HSM = (1 << 1), /* host state machine violation */
504 AC_ERR_TIMEOUT = (1 << 2), /* timeout */
505 AC_ERR_MEDIA = (1 << 3), /* media error */
506 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */
507 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */
508 AC_ERR_SYSTEM = (1 << 6), /* system error */
509 AC_ERR_INVALID = (1 << 7), /* invalid argument */
510 AC_ERR_OTHER = (1 << 8), /* unknown */
55a8e2c8 511 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */
5335b729 512 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */
a7dac447
JG		 513};
514
c93b263e
TH		 515/*
516 * Link power management policy: If you alter this, you also need to
517 * alter libata-scsi.c (for the ascii descriptions)
518 */
519enum ata_lpm_policy {
520 ATA_LPM_UNKNOWN,
521 ATA_LPM_MAX_POWER,
522 ATA_LPM_MED_POWER,
523 ATA_LPM_MIN_POWER,
524};
525
6b7ae954
TH		 526enum ata_lpm_hints {
527 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */
528 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */
529};
530
1da177e4
LT		 531/* forward declarations */
532struct scsi_device;
533struct ata_port_operations;
534struct ata_port;
cc0680a5 535struct ata_link;
1da177e4
LT		 536struct ata_queued_cmd;
537
538/* typedefs */
77853bf2 539typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
cc0680a5
TH		 540typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
541typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
d4b2bab4 542 unsigned long deadline);
cc0680a5 543typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
1da177e4 544
ee959b00 545extern struct device_attribute dev_attr_link_power_management_policy;
45fabbb7 546extern struct device_attribute dev_attr_unload_heads;
18f7ba4c
KCA		 547extern struct device_attribute dev_attr_em_message_type;
548extern struct device_attribute dev_attr_em_message;
549extern struct device_attribute dev_attr_sw_activity;
550
551enum sw_activity {
552 OFF,
553 BLINK_ON,
554 BLINK_OFF,
555};
ca77329f 556
dc34e7e1
SS		 557struct ata_taskfile {
558 unsigned long flags; /* ATA_TFLAG_xxx */
559 u8 protocol; /* ATA_PROT_xxx */
560
561 u8 ctl; /* control reg */
562
563 u8 hob_feature; /* additional data */
564 u8 hob_nsect; /* to support LBA48 */
565 u8 hob_lbal;
566 u8 hob_lbam;
567 u8 hob_lbah;
568
569 u8 feature;
570 u8 nsect;
571 u8 lbal;
572 u8 lbam;
573 u8 lbah;
574
575 u8 device;
576
577 u8 command; /* IO operation */
8be5ad9a
MC		 578
579 u32 auxiliary; /* auxiliary field */
580 /* from SATA 3.1 and */
581 /* ATA-8 ACS-3 */
dc34e7e1
SS		 582};
583
127102ae 584#ifdef CONFIG_ATA_SFF
1da177e4 585struct ata_ioports {
0d5ff566
TH		 586 void __iomem *cmd_addr;
587 void __iomem *data_addr;
588 void __iomem *error_addr;
589 void __iomem *feature_addr;
590 void __iomem *nsect_addr;
591 void __iomem *lbal_addr;
592 void __iomem *lbam_addr;
593 void __iomem *lbah_addr;
594 void __iomem *device_addr;
595 void __iomem *status_addr;
596 void __iomem *command_addr;
597 void __iomem *altstatus_addr;
598 void __iomem *ctl_addr;
9a7780c9 599#ifdef CONFIG_ATA_BMDMA
0d5ff566 600 void __iomem *bmdma_addr;
9a7780c9 601#endif /* CONFIG_ATA_BMDMA */
0d5ff566 602 void __iomem *scr_addr;
1da177e4 603};
127102ae 604#endif /* CONFIG_ATA_SFF */
1da177e4 605
cca3974e 606struct ata_host {
1da177e4
LT		 607 spinlock_t lock;
608 struct device *dev;
0d5ff566 609 void __iomem * const *iomap;
1da177e4 610 unsigned int n_ports;
1a112d10 611 unsigned int n_tags; /* nr of NCQ tags */
1da177e4 612 void *private_data;
029cfd6b 613 struct ata_port_operations *ops;
5444a6f4 614 unsigned long flags;
c0c362b6
TH		 615
616 struct mutex eh_mutex;
617 struct task_struct *eh_owner;
618
032af1ce 619 struct ata_port *simplex_claimed; /* channel owning the DMA */
f0eb62b8 620 struct ata_port *ports[0];
1da177e4
LT		 621};
622
623struct ata_queued_cmd {
624 struct ata_port *ap;
625 struct ata_device *dev;
626
627 struct scsi_cmnd *scsicmd;
628 void (*scsidone)(struct scsi_cmnd *);
629
630 struct ata_taskfile tf;
631 u8 cdb[ATAPI_CDB_LEN];
632
633 unsigned long flags; /* ATA_QCFLAG_xxx */
634 unsigned int tag;
635 unsigned int n_elem;
5825627c 636 unsigned int orig_n_elem;
1da177e4
LT		 637
638 int dma_dir;
639
5a5dbd18 640 unsigned int sect_size;
cedc9a47 641
1da177e4 642 unsigned int nbytes;
aacda375 643 unsigned int extrabytes;
1da177e4
LT		 644 unsigned int curbytes;
645
1da177e4 646 struct scatterlist sgent;
1da177e4 647
ff2aeb1e 648 struct scatterlist *sg;
1da177e4 649
b34e9042
RK		 650 struct scatterlist *cursg;
651 unsigned int cursg_ofs;
652
a22e2eb0 653 unsigned int err_mask;
e61e0672 654 struct ata_taskfile result_tf;
1da177e4
LT		 655 ata_qc_cb_t complete_fn;
656
1da177e4 657 void *private_data;
1c50dc83 658 void *lldd_task;
1da177e4
LT		 659};
660
cca3974e 661struct ata_port_stats {
1da177e4
LT		 662 unsigned long unhandled_irq;
663 unsigned long idle_irq;
664 unsigned long rw_reqbuf;
665};
666
0c247c55 667struct ata_ering_entry {
3884f7b0 668 unsigned int eflags;
0c247c55
TH		 669 unsigned int err_mask;
670 u64 timestamp;
671};
672
673struct ata_ering {
674 int cursor;
675 struct ata_ering_entry ring[ATA_ERING_SIZE];
676};
677
1da177e4 678struct ata_device {
9af5c9c9 679 struct ata_link *link;
72fa4b74 680 unsigned int devno; /* 0 or 1 */
75683fe7 681 unsigned int horkage; /* List of broken features */
6866e7bc 682 unsigned long flags; /* ATA_DFLAG_xxx */
3edebac4 683 struct scsi_device *sdev; /* attached SCSI device */
95514fd8 684 void *private_data;
fafbae87 685#ifdef CONFIG_ATA_ACPI
398e0782 686 union acpi_object *gtf_cache;
110f66d2 687 unsigned int gtf_filter;
afe75951
AL		 688#endif
689#ifdef CONFIG_SATA_ZPODD
690 void *zpodd;
fafbae87 691#endif
d9027470 692 struct device tdev;
99cf610a 693 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */
72fa4b74 694 u64 n_sectors; /* size of device, if ATA */
5920dadf 695 u64 n_native_sectors; /* native size, if ATA */
1da177e4 696 unsigned int class; /* ATA_DEV_xxx */
45fabbb7 697 unsigned long unpark_deadline;
e0a71752 698
1da177e4
LT		 699 u8 pio_mode;
700 u8 dma_mode;
701 u8 xfer_mode;
702 unsigned int xfer_shift; /* ATA_SHIFT_xxx */
703
8cbd6df1
AL		 704 unsigned int multi_count; /* sectors count for
705 READ/WRITE MULTIPLE */
b00eec1d 706 unsigned int max_sectors; /* per-device max sectors */
6e7846e9 707 unsigned int cdb_len;
8bf62ece 708
acf356b1 709 /* per-dev xfer mask */
7dc951ae
TH		 710 unsigned long pio_mask;
711 unsigned long mwdma_mask;
712 unsigned long udma_mask;
acf356b1 713
8bf62ece
AL		 714 /* for CHS addressing */
715 u16 cylinders; /* Number of cylinders */
716 u16 heads; /* Number of heads */
717 u16 sectors; /* Number of sectors per track */
0c247c55 718
f7e98930
JG		 719 union {
720 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
721 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
722 };
99cf610a 723
803739d2
SH		 724 /* DEVSLP Timing Variables from Identify Device Data Log */
725 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE];
65fe1f0f 726
ed36911c
MC		 727 /* NCQ send and receive log subcommand support */
728 u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE];
729
99cf610a
TH		 730 /* error history */
731 int spdn_cnt;
732 /* ering is CLEAR_END, read comment above CLEAR_END */
733 struct ata_ering ering;
1da177e4
LT		 734};
735
99cf610a
TH		 736/* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are
737 * cleared to zero on ata_dev_init().
72fa4b74 738 */
99cf610a
TH		 739#define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
740#define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
72fa4b74 741
f3e81b19
TH		 742struct ata_eh_info {
743 struct ata_device *dev; /* offending device */
744 u32 serror; /* SError from LLDD */
745 unsigned int err_mask; /* port-wide err_mask */
746 unsigned int action; /* ATA_EH_* action mask */
47005f25 747 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */
f3e81b19 748 unsigned int flags; /* ATA_EHI_* flags */
abdda733 749
abdda733
TH		 750 unsigned int probe_mask;
751
f3e81b19
TH		 752 char desc[ATA_EH_DESC_LEN];
753 int desc_len;
754};
755
756struct ata_eh_context {
757 struct ata_eh_info i;
758 int tries[ATA_MAX_DEVICES];
87fbc5a0
TH		 759 int cmd_timeout_idx[ATA_MAX_DEVICES]
760 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE];
abdda733
TH		 761 unsigned int classes[ATA_MAX_DEVICES];
762 unsigned int did_probe_mask;
45fabbb7 763 unsigned int unloaded_mask;
00115e0f
TH		 764 unsigned int saved_ncq_enabled;
765 u8 saved_xfer_mode[ATA_MAX_DEVICES];
0a2c0f56
TH		 766 /* timestamp for the last reset attempt or success */
767 unsigned long last_reset;
f3e81b19
TH		 768};
769
64578a3d
TH		 770struct ata_acpi_drive
771{
772 u32 pio;
773 u32 dma;
774} __packed;
775
776struct ata_acpi_gtm {
777 struct ata_acpi_drive drive[2];
778 u32 flags;
779} __packed;
780
9af5c9c9
TH		 781struct ata_link {
782 struct ata_port *ap;
8989805d 783 int pmp; /* port multiplier port # */
9af5c9c9 784
d9027470 785 struct device tdev;
9af5c9c9
TH		 786 unsigned int active_tag; /* active tag on this link */
787 u32 sactive; /* active NCQ commands */
788
0c88758b
TH		 789 unsigned int flags; /* ATA_LFLAG_xxx */
790
d127ea7b 791 u32 saved_scontrol; /* SControl on probe */
9af5c9c9
TH		 792 unsigned int hw_sata_spd_limit;
793 unsigned int sata_spd_limit;
794 unsigned int sata_spd; /* current SATA PHY speed */
6b7ae954 795 enum ata_lpm_policy lpm_policy;
9af5c9c9
TH		 796
797 /* record runtime error info, protected by host_set lock */
798 struct ata_eh_info eh_info;
799 /* EH context */
800 struct ata_eh_context eh_context;
801
802 struct ata_device device[ATA_MAX_DEVICES];
09c5b480
GM		 803
804 unsigned long last_lpm_change; /* when last LPM change happened */
9af5c9c9 805};
d9027470
GG		 806#define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
807#define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
9af5c9c9 808
1da177e4 809struct ata_port {
cca3974e 810 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */
029cfd6b 811 struct ata_port_operations *ops;
ba6a1308 812 spinlock_t *lock;
e3cf95dd
AC		 813 /* Flags owned by the EH context. Only EH should touch these once the
814 port is active */
1da177e4 815 unsigned long flags; /* ATA_FLAG_xxx */
e3cf95dd 816 /* Flags that change dynamically, protected by ap->lock */
b51e9e5d 817 unsigned int pflags; /* ATA_PFLAG_xxx */
44877b4e 818 unsigned int print_id; /* user visible unique port ID */
e628dc99 819 unsigned int local_port_no; /* host local port num */
44877b4e 820 unsigned int port_no; /* 0 based port no. inside the host */
1da177e4 821
127102ae 822#ifdef CONFIG_ATA_SFF
1da177e4 823 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */
1da177e4
LT		 824 u8 ctl; /* cache of ATA control register */
825 u8 last_ctl; /* Cache last written value */
ea3c6450 826 struct ata_link* sff_pio_task_link; /* link currently used */
c429137a 827 struct delayed_work sff_pio_task;
9a7780c9 828#ifdef CONFIG_ATA_BMDMA
f60d7011
TH		 829 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */
830 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */
9a7780c9 831#endif /* CONFIG_ATA_BMDMA */
5fe7454a
TH		 832#endif /* CONFIG_ATA_SFF */
833
1da177e4
LT		 834 unsigned int pio_mask;
835 unsigned int mwdma_mask;
836 unsigned int udma_mask;
837 unsigned int cbl; /* cable type; ATA_CBL_xxx */
1da177e4
LT		 838
839 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE];
12cb5ce1 840 unsigned long sas_tag_allocated; /* for sas tag allocation only */
dedaf2b0 841 unsigned int qc_active;
da917d69 842 int nr_active_links; /* #links with active qcs */
12cb5ce1 843 unsigned int sas_last_tag; /* track next tag hw expects */
dedaf2b0 844
b1c72916
TH		 845 struct ata_link link; /* host default link */
846 struct ata_link *slave_link; /* see ata_slave_link_init() */
1da177e4 847
8989805d
TH		 848 int nr_pmp_links; /* nr of available PMP links */
849 struct ata_link *pmp_link; /* array of PMP links */
da917d69 850 struct ata_link *excl_link; /* for PMP qc exclusion */
8989805d 851
cca3974e
JG		 852 struct ata_port_stats stats;
853 struct ata_host *host;
2f1f610b 854 struct device *dev;
d9027470 855 struct device tdev;
1da177e4 856
ad72cf98 857 struct mutex scsi_scan_mutex;
52bad64d 858 struct delayed_work hotplug_task;
3b01b8af 859 struct work_struct scsi_rescan_task;
86e45b6b 860
14be71f4 861 unsigned int hsm_task_state;
1da177e4 862
bfd60579 863 u32 msg_enable;
a72ec4ce 864 struct list_head eh_done_q;
c6cf9e99 865 wait_queue_head_t eh_wait_q;
a1e10f7e 866 int eh_tries;
45fabbb7 867 struct completion park_req_pending;
bfd60579 868
500530f6 869 pm_message_t pm_mesg;
6b7ae954 870 enum ata_lpm_policy target_lpm_policy;
500530f6 871
5ddf24c5
TH		 872 struct timer_list fastdrain_timer;
873 unsigned long fastdrain_cnt;
874
18f7ba4c 875 int em_message_type;
1da177e4 876 void *private_data;
fe635c7e 877
fafbae87 878#ifdef CONFIG_ATA_ACPI
c05e6ff0 879 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */
fafbae87 880#endif
84bda12a
TH		 881 /* owned by EH */
882 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
1da177e4
LT		 883};
884
029cfd6b
TH		 885/* The following initializer overrides a method to NULL whether one of
886 * its parent has the method defined or not. This is equivalent to
887 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant
888 * expression and thus can't be used as an initializer.
889 */
890#define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
891
1da177e4 892struct ata_port_operations {
c1bc899f
TH		 893 /*
894 * Command execution
895 */
896 int (*qc_defer)(struct ata_queued_cmd *qc);
897 int (*check_atapi_dma)(struct ata_queued_cmd *qc);
898 void (*qc_prep)(struct ata_queued_cmd *qc);
899 unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
22183bf5 900 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc);
1da177e4 901
c1bc899f
TH		 902 /*
903 * Configuration and exception handling
904 */
905 int (*cable_detect)(struct ata_port *ap);
906 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask);
907 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
908 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
909 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
963e4975 910 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id);
1da177e4 911
c1bc899f 912 void (*dev_config)(struct ata_device *dev);
1da177e4 913
c1bc899f
TH		 914 void (*freeze)(struct ata_port *ap);
915 void (*thaw)(struct ata_port *ap);
a1efdaba
TH		 916 ata_prereset_fn_t prereset;
917 ata_reset_fn_t softreset;
918 ata_reset_fn_t hardreset;
919 ata_postreset_fn_t postreset;
920 ata_prereset_fn_t pmp_prereset;
921 ata_reset_fn_t pmp_softreset;
922 ata_reset_fn_t pmp_hardreset;
923 ata_postreset_fn_t pmp_postreset;
c1bc899f 924 void (*error_handler)(struct ata_port *ap);
c96f1732 925 void (*lost_interrupt)(struct ata_port *ap);
c1bc899f 926 void (*post_internal_cmd)(struct ata_queued_cmd *qc);
e4a9c373
DW		 927 void (*sched_eh)(struct ata_port *ap);
928 void (*end_eh)(struct ata_port *ap);
c1bc899f
TH		 929
930 /*
931 * Optional features
932 */
82ef04fb
TH		 933 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val);
934 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val);
c1bc899f
TH		 935 void (*pmp_attach)(struct ata_port *ap);
936 void (*pmp_detach)(struct ata_port *ap);
6b7ae954
TH		 937 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy,
938 unsigned hints);
c1bc899f
TH		 939
940 /*
941 * Start, stop, suspend and resume
942 */
943 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg);
944 int (*port_resume)(struct ata_port *ap);
945 int (*port_start)(struct ata_port *ap);
946 void (*port_stop)(struct ata_port *ap);
947 void (*host_stop)(struct ata_host *host);
948
127102ae 949#ifdef CONFIG_ATA_SFF
c1bc899f
TH		 950 /*
951 * SFF / taskfile oriented ops
952 */
5682ed33 953 void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
41dec29b 954 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl);
5682ed33
TH		 955 u8 (*sff_check_status)(struct ata_port *ap);
956 u8 (*sff_check_altstatus)(struct ata_port *ap);
957 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
958 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
959 void (*sff_exec_command)(struct ata_port *ap,
960 const struct ata_taskfile *tf);
961 unsigned int (*sff_data_xfer)(struct ata_device *dev,
962 unsigned char *buf, unsigned int buflen, int rw);
e42a542b 963 void (*sff_irq_on)(struct ata_port *);
27943620 964 bool (*sff_irq_check)(struct ata_port *);
5682ed33 965 void (*sff_irq_clear)(struct ata_port *);
8244cd05 966 void (*sff_drain_fifo)(struct ata_queued_cmd *qc);
5682ed33 967
9a7780c9 968#ifdef CONFIG_ATA_BMDMA
c1bc899f
TH		 969 void (*bmdma_setup)(struct ata_queued_cmd *qc);
970 void (*bmdma_start)(struct ata_queued_cmd *qc);
971 void (*bmdma_stop)(struct ata_queued_cmd *qc);
972 u8 (*bmdma_status)(struct ata_port *ap);
9a7780c9 973#endif /* CONFIG_ATA_BMDMA */
127102ae 974#endif /* CONFIG_ATA_SFF */
c1bc899f 975
18f7ba4c
KCA		 976 ssize_t (*em_show)(struct ata_port *ap, char *buf);
977 ssize_t (*em_store)(struct ata_port *ap, const char *message,
978 size_t size);
979 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf);
980 ssize_t (*sw_activity_store)(struct ata_device *dev,
981 enum sw_activity val);
439d7a35
ML		 982 ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state,
983 ssize_t size);
984
c1bc899f
TH		 985 /*
986 * Obsolete
9ec957f2 987 */
c1bc899f
TH		 988 void (*phy_reset)(struct ata_port *ap);
989 void (*eng_timeout)(struct ata_port *ap);
029cfd6b
TH		 990
991 /*
992 * ->inherits must be the last field and all the preceding
993 * fields must be pointers.
994 */
995 const struct ata_port_operations *inherits;
1da177e4
LT		 996};
997
998struct ata_port_info {
cca3974e 999 unsigned long flags;
0c88758b 1000 unsigned long link_flags;
1da177e4
LT		 1001 unsigned long pio_mask;
1002 unsigned long mwdma_mask;
1003 unsigned long udma_mask;
029cfd6b 1004 struct ata_port_operations *port_ops;
e99f8b5e 1005 void *private_data;
1da177e4
LT		 1006};
1007
452503f9
AC		 1008struct ata_timing {
1009 unsigned short mode; /* ATA mode */
1010 unsigned short setup; /* t1 */
1011 unsigned short act8b; /* t2 for 8-bit I/O */
1012 unsigned short rec8b; /* t2i for 8-bit I/O */
1013 unsigned short cyc8b; /* t0 for 8-bit I/O */
1014 unsigned short active; /* t2 or tD */
1015 unsigned short recover; /* t2i or tK */
3ada9c12 1016 unsigned short dmack_hold; /* tj */
452503f9
AC		 1017 unsigned short cycle; /* t0 */
1018 unsigned short udma; /* t2CYCTYP/2 */
1019};
1020
624d5c51
TH		 1021/*
1022 * Core layer - drivers/ata/libata-core.c
1023 */
e9c83914
TH		 1024extern const unsigned long sata_deb_timing_normal[];
1025extern const unsigned long sata_deb_timing_hotplug[];
1026extern const unsigned long sata_deb_timing_long[];
1027
029cfd6b 1028extern struct ata_port_operations ata_dummy_port_ops;
21b0ad4f 1029extern const struct ata_port_info ata_dummy_port_info;
dd5b06c4 1030
dc34e7e1
SS		 1031/*
1032 * protocol tests
1033 */
1034static inline unsigned int ata_prot_flags(u8 prot)
1035{
1036 switch (prot) {
1037 case ATA_PROT_NODATA:
1038 return 0;
1039 case ATA_PROT_PIO:
1040 return ATA_PROT_FLAG_PIO;
1041 case ATA_PROT_DMA:
1042 return ATA_PROT_FLAG_DMA;
1043 case ATA_PROT_NCQ:
1044 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
1045 case ATAPI_PROT_NODATA:
1046 return ATA_PROT_FLAG_ATAPI;
1047 case ATAPI_PROT_PIO:
1048 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO;
1049 case ATAPI_PROT_DMA:
1050 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA;
1051 }
1052 return 0;
1053}
1054
1055static inline int ata_is_atapi(u8 prot)
1056{
1057 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI;
1058}
1059
1060static inline int ata_is_nodata(u8 prot)
1061{
1062 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA);
1063}
1064
1065static inline int ata_is_pio(u8 prot)
1066{
1067 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;
1068}
1069
1070static inline int ata_is_dma(u8 prot)
1071{
1072 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA;
1073}
1074
1075static inline int ata_is_ncq(u8 prot)
1076{
1077 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ;
1078}
1079
1080static inline int ata_is_data(u8 prot)
1081{
1082 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA;
1083}
1084
1085static inline int is_multi_taskfile(struct ata_taskfile *tf)
1086{
1087 return (tf->command == ATA_CMD_READ_MULTI) ||
1088 (tf->command == ATA_CMD_WRITE_MULTI) ||
1089 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
1090 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
1091 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
1092}
1093
e9c83914
TH		 1094static inline const unsigned long *
1095sata_ehc_deb_timing(struct ata_eh_context *ehc)
1096{
1097 if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
1098 return sata_deb_timing_hotplug;
1099 else
1100 return sata_deb_timing_normal;
1101}
d7bb4cc7 1102
dd5b06c4
TH		 1103static inline int ata_port_is_dummy(struct ata_port *ap)
1104{
1105 return ap->ops == &ata_dummy_port_ops;
1106}
1107
936fd732 1108extern int sata_set_spd(struct ata_link *link);
0aa1113d 1109extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
aa2731ad
TH		 1110extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
1111 int (*check_ready)(struct ata_link *link));
936fd732
TH		 1112extern int sata_link_debounce(struct ata_link *link,
1113 const unsigned long *params, unsigned long deadline);
1114extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
1115 unsigned long deadline);
1152b261
TH		 1116extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
1117 bool spm_wakeup);
cc0680a5 1118extern int sata_link_hardreset(struct ata_link *link,
9dadd45b
TH		 1119 const unsigned long *timing, unsigned long deadline,
1120 bool *online, int (*check_ready)(struct ata_link *));
57c9efdf
TH		 1121extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
1122 unsigned long deadline);
203c75b8 1123extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
2855568b 1124
f3187195 1125extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
f5cda257
TH		 1126extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
1127 const struct ata_port_info * const * ppi, int n_ports);
b1c72916 1128extern int ata_slave_link_init(struct ata_port *ap);
ecef7253 1129extern int ata_host_start(struct ata_host *host);
f3187195
TH		 1130extern int ata_host_register(struct ata_host *host,
1131 struct scsi_host_template *sht);
f5cda257
TH		 1132extern int ata_host_activate(struct ata_host *host, int irq,
1133 irq_handler_t irq_handler, unsigned long irq_flags,
1134 struct scsi_host_template *sht);
0529c159 1135extern void ata_host_detach(struct ata_host *host);
8d8e7d13 1136extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *);
193515d5 1137extern int ata_scsi_detect(struct scsi_host_template *sht);
1da177e4 1138extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
f281233d 1139extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd);
94be9a58
JG		 1140extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev,
1141 int cmd, void __user *arg);
80289167 1142extern void ata_sas_port_destroy(struct ata_port *);
cca3974e 1143extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
80289167 1144 struct ata_port_info *, struct Scsi_Host *);
b2024459
DW		 1145extern void ata_sas_async_probe(struct ata_port *ap);
1146extern int ata_sas_sync_probe(struct ata_port *ap);
80289167
BK		 1147extern int ata_sas_port_init(struct ata_port *);
1148extern int ata_sas_port_start(struct ata_port *ap);
1149extern void ata_sas_port_stop(struct ata_port *ap);
1150extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
b27dcfb0 1151extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap);
936fd732
TH		 1152extern int sata_scr_valid(struct ata_link *link);
1153extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
1154extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
1155extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
b5b3fa38
TH		 1156extern bool ata_link_online(struct ata_link *link);
1157extern bool ata_link_offline(struct ata_link *link);
6ffa01d8 1158#ifdef CONFIG_PM
cca3974e
JG		 1159extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
1160extern void ata_host_resume(struct ata_host *host);
bc6e7c4b
DW		 1161extern void ata_sas_port_suspend(struct ata_port *ap);
1162extern void ata_sas_port_resume(struct ata_port *ap);
2fcbdcb4 1163#else
bc6e7c4b 1164static inline void ata_sas_port_suspend(struct ata_port *ap)
2fcbdcb4 1165{
2fcbdcb4 1166}
a5a65699
RD		 1167static inline void ata_sas_port_resume(struct ata_port *ap)
1168{
1169}
6ffa01d8 1170#endif
67846b30 1171extern int ata_ratelimit(void);
97750ceb
TH		 1172extern void ata_msleep(struct ata_port *ap, unsigned int msecs);
1173extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask,
1174 u32 val, unsigned long interval, unsigned long timeout);
436d34b3 1175extern int atapi_cmd_type(u8 opcode);
9977126c
TH		 1176extern void ata_tf_to_fis(const struct ata_taskfile *tf,
1177 u8 pmp, int is_cmd, u8 *fis);
057ace5e 1178extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
7dc951ae
TH		 1179extern unsigned long ata_pack_xfermask(unsigned long pio_mask,
1180 unsigned long mwdma_mask, unsigned long udma_mask);
1181extern void ata_unpack_xfermask(unsigned long xfer_mask,
1182 unsigned long *pio_mask, unsigned long *mwdma_mask,
1183 unsigned long *udma_mask);
1184extern u8 ata_xfer_mask2mode(unsigned long xfer_mask);
1185extern unsigned long ata_xfer_mode2mask(u8 xfer_mode);
1186extern int ata_xfer_mode2shift(unsigned long xfer_mode);
1187extern const char *ata_mode_string(unsigned long xfer_mask);
1188extern unsigned long ata_id_xfermask(const u16 *id);
31cc23b3 1189extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
e46834cd 1190extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);
1da177e4
LT		 1191extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
1192 unsigned int n_elem);
057ace5e 1193extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
10305f0f 1194extern void ata_dev_disable(struct ata_device *adev);
6a62a04d
TH		 1195extern void ata_id_string(const u16 *id, unsigned char *s,
1196 unsigned int ofs, unsigned int len);
1197extern void ata_id_c_string(const u16 *id, unsigned char *s,
1198 unsigned int ofs, unsigned int len);
963e4975
AC		 1199extern unsigned int ata_do_dev_read_id(struct ata_device *dev,
1200 struct ata_taskfile *tf, u16 *id);
f686bcb8 1201extern void ata_qc_complete(struct ata_queued_cmd *qc);
79f97dad 1202extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active);
b27dcfb0 1203extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd);
1da177e4
LT		 1204extern int ata_std_bios_param(struct scsi_device *sdev,
1205 struct block_device *bdev,
1206 sector_t capacity, int geom[]);
d8d9129e 1207extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
1da177e4 1208extern int ata_scsi_slave_config(struct scsi_device *sdev);
83c47bcb 1209extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
a6e6ce8e 1210extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
db5ed4df 1211 int queue_depth);
f6e67035 1212extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev,
db5ed4df 1213 int queue_depth);
3373efd8 1214extern struct ata_device *ata_dev_pair(struct ata_device *adev);
0260731f 1215extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
0e0b494c
JB		 1216extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap);
1217extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q);
8393b811 1218extern bool sata_lpm_ignore_phy_events(struct ata_link *link);
1da177e4 1219
be0d18df
AC		 1220extern int ata_cable_40wire(struct ata_port *ap);
1221extern int ata_cable_80wire(struct ata_port *ap);
1222extern int ata_cable_sata(struct ata_port *ap);
c88f90c3 1223extern int ata_cable_ignore(struct ata_port *ap);
be0d18df
AC		 1224extern int ata_cable_unknown(struct ata_port *ap);
1225
624d5c51 1226/* Timing helpers */
1bc4ccff 1227extern unsigned int ata_pio_need_iordy(const struct ata_device *);
6357357c 1228extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
452503f9
AC		 1229extern int ata_timing_compute(struct ata_device *, unsigned short,
1230 struct ata_timing *, int, int);
1231extern void ata_timing_merge(const struct ata_timing *,
1232 const struct ata_timing *, struct ata_timing *,
1233 unsigned int);
a0f79b92 1234extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);
452503f9 1235
624d5c51
TH		 1236/* PCI */
1237#ifdef CONFIG_PCI
1238struct pci_dev;
1239
1240struct pci_bits {
1241 unsigned int reg; /* PCI config register to read */
1242 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
1243 unsigned long mask;
1244 unsigned long val;
452503f9
AC		 1245};
1246
624d5c51
TH		 1247extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
1248extern void ata_pci_remove_one(struct pci_dev *pdev);
1249
1250#ifdef CONFIG_PM
1251extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
1252extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
1253extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
1254extern int ata_pci_device_resume(struct pci_dev *pdev);
1255#endif /* CONFIG_PM */
1256#endif /* CONFIG_PCI */
1257
b7db04d9
BN		 1258struct platform_device;
1259
1260extern int ata_platform_remove_one(struct platform_device *pdev);
1261
624d5c51
TH		 1262/*
1263 * ACPI - drivers/ata/libata-acpi.c
1264 */
e1ddb4b6 1265#ifdef CONFIG_ATA_ACPI
c05e6ff0
TH		 1266static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1267{
1268 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
1269 return &ap->__acpi_init_gtm;
1270 return NULL;
1271}
0d02f0b2
TH		 1272int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
1273int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
7c77fa4d
TH		 1274unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev,
1275 const struct ata_acpi_gtm *gtm);
021ee9a6 1276int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm);
e1ddb4b6 1277#else
c05e6ff0
TH		 1278static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1279{
1280 return NULL;
1281}
7c77fa4d
TH		 1282
1283static inline int ata_acpi_stm(const struct ata_port *ap,
1284 struct ata_acpi_gtm *stm)
1285{
1286 return -ENOSYS;
1287}
1288
1289static inline int ata_acpi_gtm(const struct ata_port *ap,
1290 struct ata_acpi_gtm *stm)
1291{
1292 return -ENOSYS;
1293}
1294
1295static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
1296 const struct ata_acpi_gtm *gtm)
1297{
1298 return 0;
1299}
021ee9a6
TH		 1300
1301static inline int ata_acpi_cbl_80wire(struct ata_port *ap,
1302 const struct ata_acpi_gtm *gtm)
1303{
1304 return 0;
1305}
e1ddb4b6 1306#endif
1da177e4 1307
ece1d636 1308/*
624d5c51 1309 * EH - drivers/ata/libata-eh.c
ece1d636 1310 */
7b70fc03 1311extern void ata_port_schedule_eh(struct ata_port *ap);
81c757bc 1312extern void ata_port_wait_eh(struct ata_port *ap);
dbd82616 1313extern int ata_link_abort(struct ata_link *link);
7b70fc03 1314extern int ata_port_abort(struct ata_port *ap);
e3180499 1315extern int ata_port_freeze(struct ata_port *ap);
7d77b247 1316extern int sata_async_notification(struct ata_port *ap);
e3180499
TH		 1317
1318extern void ata_eh_freeze_port(struct ata_port *ap);
1319extern void ata_eh_thaw_port(struct ata_port *ap);
7b70fc03 1320
ece1d636
TH		 1321extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
1322extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
10acf3b0 1323extern void ata_eh_analyze_ncq_error(struct ata_link *link);
ece1d636 1324
f5914a46
TH		 1325extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
1326 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
1327 ata_postreset_fn_t postreset);
a1efdaba 1328extern void ata_std_error_handler(struct ata_port *ap);
e4a9c373
DW		 1329extern void ata_std_sched_eh(struct ata_port *ap);
1330extern void ata_std_end_eh(struct ata_port *ap);
8a745f1f 1331extern int ata_link_nr_enabled(struct ata_link *link);
022bdb07 1332
68d1d07b
TH		 1333/*
1334 * Base operations to inherit from and initializers for sht
1335 *
1336 * Operations
1337 *
1338 * base : Common to all libata drivers.
1339 * sata : SATA controllers w/ native interface.
1340 * pmp : SATA controllers w/ PMP support.
1341 * sff : SFF ATA controllers w/o BMDMA support.
1342 * bmdma : SFF ATA controllers w/ BMDMA support.
1343 *
1344 * sht initializers
1345 *
1346 * BASE : Common to all libata drivers. The user must set
1347 * sg_tablesize and dma_boundary.
1348 * PIO : SFF ATA controllers w/ only PIO support.
1349 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and
1350 * dma_boundary are set to BMDMA limits.
1351 * NCQ : SATA controllers supporting NCQ. The user must set
1352 * sg_tablesize, dma_boundary and can_queue.
1353 */
1354extern const struct ata_port_operations ata_base_port_ops;
1355extern const struct ata_port_operations sata_port_ops;
45fabbb7 1356extern struct device_attribute *ata_common_sdev_attrs[];
68d1d07b 1357
018d5ef2
AM		 1358/*
1359 * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated
1360 * by the edge drivers. Because the 'module' field of sht must be the
1361 * edge driver's module reference, otherwise the driver can be unloaded
1362 * even if the scsi_device is being accessed.
1363 */
68d1d07b
TH		 1364#define ATA_BASE_SHT(drv_name) \
1365 .module = THIS_MODULE, \
1366 .name = drv_name, \
1367 .ioctl = ata_scsi_ioctl, \
1368 .queuecommand = ata_scsi_queuecmd, \
1369 .can_queue = ATA_DEF_QUEUE, \
12cb5ce1 1370 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \
68d1d07b 1371 .this_id = ATA_SHT_THIS_ID, \
68d1d07b
TH		 1372 .emulated = ATA_SHT_EMULATED, \
1373 .use_clustering = ATA_SHT_USE_CLUSTERING, \
1374 .proc_name = drv_name, \
1375 .slave_configure = ata_scsi_slave_config, \
1376 .slave_destroy = ata_scsi_slave_destroy, \
45fabbb7 1377 .bios_param = ata_std_bios_param, \
d8d9129e 1378 .unlock_native_capacity = ata_scsi_unlock_native_capacity, \
45fabbb7 1379 .sdev_attrs = ata_common_sdev_attrs
68d1d07b 1380
68d1d07b
TH		 1381#define ATA_NCQ_SHT(drv_name) \
1382 ATA_BASE_SHT(drv_name), \
1383 .change_queue_depth = ata_scsi_change_queue_depth
1384
071f44b1
TH		 1385/*
1386 * PMP helpers
1387 */
88fcd562 1388#ifdef CONFIG_SATA_PMP
071f44b1
TH		 1389static inline bool sata_pmp_supported(struct ata_port *ap)
1390{
1391 return ap->flags & ATA_FLAG_PMP;
1392}
1393
1394static inline bool sata_pmp_attached(struct ata_port *ap)
1395{
1396 return ap->nr_pmp_links != 0;
1397}
1398
1399static inline int ata_is_host_link(const struct ata_link *link)
1400{
b1c72916 1401 return link == &link->ap->link || link == link->ap->slave_link;
071f44b1 1402}
88fcd562
TH		 1403#else /* CONFIG_SATA_PMP */
1404static inline bool sata_pmp_supported(struct ata_port *ap)
1405{
1406 return false;
1407}
1408
1409static inline bool sata_pmp_attached(struct ata_port *ap)
1410{
1411 return false;
1412}
1413
1414static inline int ata_is_host_link(const struct ata_link *link)
1415{
1416 return 1;
1417}
1418#endif /* CONFIG_SATA_PMP */
071f44b1
TH		 1419
1420static inline int sata_srst_pmp(struct ata_link *link)
1421{
1422 if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
1423 return SATA_PMP_CTRL_PORT;
1424 return link->pmp;
1425}
1426
61440db6
TH		 1427/*
1428 * printk helpers
1429 */
b9075fa9 1430__printf(3, 4)
d7bead1b
JP		 1431void ata_port_printk(const struct ata_port *ap, const char *level,
1432 const char *fmt, ...);
b9075fa9 1433__printf(3, 4)
d7bead1b
JP		 1434void ata_link_printk(const struct ata_link *link, const char *level,
1435 const char *fmt, ...);
b9075fa9 1436__printf(3, 4)
d7bead1b
JP		 1437void ata_dev_printk(const struct ata_device *dev, const char *level,
1438 const char *fmt, ...);
a9a79dfe
JP		 1439
1440#define ata_port_err(ap, fmt, ...) \
1441 ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__)
1442#define ata_port_warn(ap, fmt, ...) \
1443 ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__)
1444#define ata_port_notice(ap, fmt, ...) \
1445 ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__)
1446#define ata_port_info(ap, fmt, ...) \
1447 ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__)
1448#define ata_port_dbg(ap, fmt, ...) \
1449 ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__)
1450
1451#define ata_link_err(link, fmt, ...) \
1452 ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__)
1453#define ata_link_warn(link, fmt, ...) \
1454 ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__)
1455#define ata_link_notice(link, fmt, ...) \
1456 ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__)
1457#define ata_link_info(link, fmt, ...) \
1458 ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__)
1459#define ata_link_dbg(link, fmt, ...) \
1460 ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__)
1461
1462#define ata_dev_err(dev, fmt, ...) \
1463 ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__)
1464#define ata_dev_warn(dev, fmt, ...) \
1465 ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__)
1466#define ata_dev_notice(dev, fmt, ...) \
1467 ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__)
1468#define ata_dev_info(dev, fmt, ...) \
1469 ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__)
1470#define ata_dev_dbg(dev, fmt, ...) \
1471 ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__)
1da177e4 1472
06296a1e
JP		 1473void ata_print_version(const struct device *dev, const char *version);
1474
f3e81b19
TH		 1475/*
1476 * ata_eh_info helpers
1477 */
b9075fa9
JP		 1478extern __printf(2, 3)
1479void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1480extern __printf(2, 3)
1481void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
b64bbc39 1482extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
f3e81b19 1483
c0b6c037
TH		 1484static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
1485{
b558eddd 1486 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
f8f1e1cc 1487 ehi->flags |= ATA_EHI_HOTPLUGGED;
b558eddd 1488 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;
c0b6c037
TH		 1489 ehi->err_mask |= AC_ERR_ATA_BUS;
1490}
1491
cbcdd875
TH		 1492/*
1493 * port description helpers
1494 */
b9075fa9
JP		 1495extern __printf(2, 3)
1496void ata_port_desc(struct ata_port *ap, const char *fmt, ...);
cbcdd875
TH		 1497#ifdef CONFIG_PCI
1498extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
1499 const char *name);
1500#endif
1501
1da177e4
LT		 1502static inline unsigned int ata_tag_valid(unsigned int tag)
1503{
1504 return (tag < ATA_MAX_QUEUE) ? 1 : 0;
1505}
1506
2ab7db1f
TH		 1507static inline unsigned int ata_tag_internal(unsigned int tag)
1508{
83c063dd 1509 return tag == ATA_TAG_INTERNAL;
2ab7db1f
TH		 1510}
1511
5806db22
TH		 1512/*
1513 * device helpers
1514 */
e1211e3f 1515static inline unsigned int ata_class_enabled(unsigned int class)
597afd21 1516{
e0a71752 1517 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
9162c657
HR		 1518 class == ATA_DEV_PMP || class == ATA_DEV_SEMB ||
1519 class == ATA_DEV_ZAC;
597afd21
TH		 1520}
1521
e1211e3f 1522static inline unsigned int ata_class_disabled(unsigned int class)
1da177e4 1523{
e0a71752
TH		 1524 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
1525 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP;
e1211e3f
TH		 1526}
1527
002c8054
TH		 1528static inline unsigned int ata_class_absent(unsigned int class)
1529{
1530 return !ata_class_enabled(class) && !ata_class_disabled(class);
1531}
1532
e1211e3f
TH		 1533static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
1534{
1535 return ata_class_enabled(dev->class);
1536}
1537
1538static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
1539{
1540 return ata_class_disabled(dev->class);
1da177e4
LT		 1541}
1542
002c8054
TH		 1543static inline unsigned int ata_dev_absent(const struct ata_device *dev)
1544{
1545 return ata_class_absent(dev->class);
1546}
1547
5806db22 1548/*
f58229f8 1549 * link helpers
5806db22 1550 */
f58229f8 1551static inline int ata_link_max_devices(const struct ata_link *link)
5806db22 1552{
8989805d 1553 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS)
5806db22
TH		 1554 return 2;
1555 return 1;
1556}
1557
da917d69
TH		 1558static inline int ata_link_active(struct ata_link *link)
1559{
1560 return ata_tag_valid(link->active_tag) || link->sactive;
1561}
1562
1eca4365
TH		 1563/*
1564 * Iterators
1565 *
1566 * ATA_LITER_* constants are used to select link iteration mode and
1567 * ATA_DITER_* device iteration mode.
1568 *
1569 * For a custom iteration directly using ata_{link|dev}_next(), if
1570 * @link or @dev, respectively, is NULL, the first element is
1571 * returned. @dev and @link can be any valid device or link and the
1572 * next element according to the iteration mode will be returned.
1573 * After the last element, NULL is returned.
1574 */
1575enum ata_link_iter_mode {
1576 ATA_LITER_EDGE, /* if present, PMP links only; otherwise,
1577 * host link. no slave link */
1578 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */
1579 ATA_LITER_PMP_FIRST, /* PMP links followed by host link,
1580 * slave link still comes after host link */
1581};
1582
1583enum ata_dev_iter_mode {
1584 ATA_DITER_ENABLED,
1585 ATA_DITER_ENABLED_REVERSE,
1586 ATA_DITER_ALL,
1587 ATA_DITER_ALL_REVERSE,
1588};
1589
1590extern struct ata_link *ata_link_next(struct ata_link *link,
1591 struct ata_port *ap,
1592 enum ata_link_iter_mode mode);
1593
1594extern struct ata_device *ata_dev_next(struct ata_device *dev,
1595 struct ata_link *link,
1596 enum ata_dev_iter_mode mode);
1597
1598/*
1599 * Shortcut notation for iterations
1600 *
1601 * ata_for_each_link() iterates over each link of @ap according to
1602 * @mode. @link points to the current link in the loop. @link is
1603 * NULL after loop termination. ata_for_each_dev() works the same way
1604 * except that it iterates over each device of @link.
1605 *
1606 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be
1607 * specified when using the following shorthand notations. Only the
1608 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be
1609 * specified. This not only increases brevity but also makes it
1610 * impossible to use ATA_LITER_* for device iteration or vice-versa.
1611 */
1612#define ata_for_each_link(link, ap, mode) \
1613 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1614 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1615
1616#define ata_for_each_dev(dev, link, mode) \
1617 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1618 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
5806db22 1619
6d1245bf
TH		 1620/**
1621 * ata_ncq_enabled - Test whether NCQ is enabled
1622 * @dev: ATA device to test for
1623 *
1624 * LOCKING:
1625 * spin_lock_irqsave(host lock)
1626 *
1627 * RETURNS:
1628 * 1 if NCQ is enabled for @dev, 0 otherwise.
1629 */
1630static inline int ata_ncq_enabled(struct ata_device *dev)
1631{
1632 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF |
1633 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
1634}
0baab86b 1635
87fb6c31
MC		 1636static inline bool ata_fpdma_dsm_supported(struct ata_device *dev)
1637{
1638 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1639 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] &
1640 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM);
1641}
1642
1da177e4
LT		 1643static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
1644{
1645 qc->tf.ctl |= ATA_NIEN;
1646}
1647
f69499f4
TH		 1648static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
1649 unsigned int tag)
1da177e4
LT		 1650{
1651 if (likely(ata_tag_valid(tag)))
1652 return &ap->qcmd[tag];
1653 return NULL;
1654}
1655
f69499f4
TH		 1656static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
1657 unsigned int tag)
1658{
1659 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
1660
1661 if (unlikely(!qc) || !ap->ops->error_handler)
1662 return qc;
1663
1664 if ((qc->flags & (ATA_QCFLAG_ACTIVE |
1665 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE)
1666 return qc;
1667
1668 return NULL;
1669}
1670
aacda375
TH		 1671static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc)
1672{
1673 return qc->nbytes - min(qc->extrabytes, qc->nbytes);
1674}
1675
3373efd8 1676static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
1da177e4
LT		 1677{
1678 memset(tf, 0, sizeof(*tf));
1679
5fe7454a 1680#ifdef CONFIG_ATA_SFF
9af5c9c9 1681 tf->ctl = dev->link->ap->ctl;
5fe7454a
TH		 1682#else
1683 tf->ctl = ATA_DEVCTL_OBS;
1684#endif
3373efd8 1685 if (dev->devno == 0)
1da177e4
LT		 1686 tf->device = ATA_DEVICE_OBS;
1687 else
1688 tf->device = ATA_DEVICE_OBS | ATA_DEV1;
1689}
1690
2c13b7ce
JG		 1691static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
1692{
501e0c50 1693 qc->dma_dir = DMA_NONE;
ff2aeb1e 1694 qc->sg = NULL;
2c13b7ce 1695 qc->flags = 0;
87260216
JA		 1696 qc->cursg = NULL;
1697 qc->cursg_ofs = 0;
aacda375 1698 qc->nbytes = qc->extrabytes = qc->curbytes = 0;
7a801184 1699 qc->n_elem = 0;
a22e2eb0 1700 qc->err_mask = 0;
5a5dbd18 1701 qc->sect_size = ATA_SECT_SIZE;
2c13b7ce 1702
3373efd8 1703 ata_tf_init(qc->dev, &qc->tf);
e61e0672
TH		 1704
1705 /* init result_tf such that it indicates normal completion */
1706 qc->result_tf.command = ATA_DRDY;
1707 qc->result_tf.feature = 0;
2c13b7ce
JG		 1708}
1709
057ace5e 1710static inline int ata_try_flush_cache(const struct ata_device *dev)
1da177e4
LT		 1711{
1712 return ata_id_wcache_enabled(dev->id) ||
1713 ata_id_has_flush(dev->id) ||
1714 ata_id_has_flush_ext(dev->id);
1715}
1716
a7dac447
JG		 1717static inline unsigned int ac_err_mask(u8 status)
1718{
3655d1d3 1719 if (status & (ATA_BUSY | ATA_DRQ))
11a56d24 1720 return AC_ERR_HSM;
a7dac447
JG		 1721 if (status & (ATA_ERR | ATA_DF))
1722 return AC_ERR_DEV;
1723 return 0;
1724}
1725
1726static inline unsigned int __ac_err_mask(u8 status)
1727{
1728 unsigned int mask = ac_err_mask(status);
1729 if (mask == 0)
1730 return AC_ERR_OTHER;
1731 return mask;
1732}
1733
35bb94b1
JG		 1734static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
1735{
4911487a 1736 return *(struct ata_port **)&host->hostdata[0];
35bb94b1
JG		 1737}
1738
78ab88f0
TH		 1739static inline int ata_check_ready(u8 status)
1740{
005b1f74
JG		 1741 if (!(status & ATA_BUSY))
1742 return 1;
78ab88f0
TH		 1743
1744 /* 0xff indicates either no device or device not ready */
1745 if (status == 0xff)
1746 return -ENODEV;
1747
005b1f74 1748 return 0;
78ab88f0
TH		 1749}
1750
341c2c95
TH		 1751static inline unsigned long ata_deadline(unsigned long from_jiffies,
1752 unsigned long timeout_msecs)
1753{
1754 return from_jiffies + msecs_to_jiffies(timeout_msecs);
1755}
1756
b15b3eba
AC		 1757/* Don't open code these in drivers as there are traps. Firstly the range may
1758 change in future hardware and specs, secondly 0xFF means 'no DMA' but is
1759 > UDMA_0. Dyma ddreigiau */
1760
1761static inline int ata_using_mwdma(struct ata_device *adev)
1762{
1763 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4)
1764 return 1;
1765 return 0;
1766}
1767
1768static inline int ata_using_udma(struct ata_device *adev)
1769{
1770 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7)
1771 return 1;
1772 return 0;
1773}
1774
1775static inline int ata_dma_enabled(struct ata_device *adev)
1776{
1777 return (adev->dma_mode == 0xFF ? 0 : 1);
1778}
48515f6c
TH		 1779
1780/**************************************************************************
1781 * PMP - drivers/ata/libata-pmp.c
1782 */
88fcd562
TH		 1783#ifdef CONFIG_SATA_PMP
1784
48515f6c
TH		 1785extern const struct ata_port_operations sata_pmp_port_ops;
1786
1787extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
1788extern void sata_pmp_error_handler(struct ata_port *ap);
1789
88fcd562
TH		 1790#else /* CONFIG_SATA_PMP */
1791
1792#define sata_pmp_port_ops sata_port_ops
1793#define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1794#define sata_pmp_error_handler ata_std_error_handler
1795
1796#endif /* CONFIG_SATA_PMP */
1797
48515f6c 1798
624d5c51
TH		 1799/**************************************************************************
1800 * SFF - drivers/ata/libata-sff.c
1801 */
127102ae
TH		 1802#ifdef CONFIG_ATA_SFF
1803
624d5c51 1804extern const struct ata_port_operations ata_sff_port_ops;
871af121 1805extern const struct ata_port_operations ata_bmdma32_port_ops;
624d5c51
TH		 1806
1807/* PIO only, sg_tablesize and dma_boundary limits can be removed */
1808#define ATA_PIO_SHT(drv_name) \
1809 ATA_BASE_SHT(drv_name), \
1810 .sg_tablesize = LIBATA_MAX_PRD, \
1811 .dma_boundary = ATA_DMA_BOUNDARY
1812
9363c382
TH		 1813extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
1814extern u8 ata_sff_check_status(struct ata_port *ap);
a57c1bad
AC		 1815extern void ata_sff_pause(struct ata_port *ap);
1816extern void ata_sff_dma_pause(struct ata_port *ap);
9363c382
TH		 1817extern int ata_sff_busy_sleep(struct ata_port *ap,
1818 unsigned long timeout_pat, unsigned long timeout);
705e76be 1819extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline);
9363c382
TH		 1820extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
1821extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
1822extern void ata_sff_exec_command(struct ata_port *ap,
1823 const struct ata_taskfile *tf);
1824extern unsigned int ata_sff_data_xfer(struct ata_device *dev,
624d5c51 1825 unsigned char *buf, unsigned int buflen, int rw);
871af121
AC		 1826extern unsigned int ata_sff_data_xfer32(struct ata_device *dev,
1827 unsigned char *buf, unsigned int buflen, int rw);
9363c382 1828extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev,
624d5c51 1829 unsigned char *buf, unsigned int buflen, int rw);
e42a542b 1830extern void ata_sff_irq_on(struct ata_port *ap);
9363c382
TH		 1831extern void ata_sff_irq_clear(struct ata_port *ap);
1832extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
1833 u8 status, int in_wq);
64b97594
VK		 1834extern void ata_sff_queue_work(struct work_struct *work);
1835extern void ata_sff_queue_delayed_work(struct delayed_work *dwork,
1836 unsigned long delay);
ea3c6450 1837extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay);
9363c382 1838extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
22183bf5 1839extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
c3b28894 1840extern unsigned int ata_sff_port_intr(struct ata_port *ap,
9363c382
TH		 1841 struct ata_queued_cmd *qc);
1842extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
c96f1732 1843extern void ata_sff_lost_interrupt(struct ata_port *ap);
9363c382
TH		 1844extern void ata_sff_freeze(struct ata_port *ap);
1845extern void ata_sff_thaw(struct ata_port *ap);
1846extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
1847extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
1848 u8 *r_err);
705e76be
TH		 1849extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
1850 unsigned long deadline);
9363c382 1851extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
624d5c51 1852 unsigned long deadline);
9363c382
TH		 1853extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
1854 unsigned long deadline);
1855extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
3d47aa8e 1856extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
9363c382 1857extern void ata_sff_error_handler(struct ata_port *ap);
9363c382 1858extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
624d5c51 1859#ifdef CONFIG_PCI
9363c382
TH		 1860extern int ata_pci_sff_init_host(struct ata_host *host);
1861extern int ata_pci_sff_prepare_host(struct pci_dev *pdev,
624d5c51
TH		 1862 const struct ata_port_info * const * ppi,
1863 struct ata_host **r_host);
9363c382 1864extern int ata_pci_sff_activate_host(struct ata_host *host,
624d5c51
TH		 1865 irq_handler_t irq_handler,
1866 struct scsi_host_template *sht);
9363c382 1867extern int ata_pci_sff_init_one(struct pci_dev *pdev,
16ea0fc9
AC		 1868 const struct ata_port_info * const * ppi,
1869 struct scsi_host_template *sht, void *host_priv, int hflags);
624d5c51
TH		 1870#endif /* CONFIG_PCI */
1871
9a7780c9
TH		 1872#ifdef CONFIG_ATA_BMDMA
1873
1874extern const struct ata_port_operations ata_bmdma_port_ops;
1875
1876#define ATA_BMDMA_SHT(drv_name) \
1877 ATA_BASE_SHT(drv_name), \
1878 .sg_tablesize = LIBATA_MAX_PRD, \
1879 .dma_boundary = ATA_DMA_BOUNDARY
1880
f47451c4 1881extern void ata_bmdma_qc_prep(struct ata_queued_cmd *qc);
360ff783 1882extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc);
f47451c4 1883extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc);
c3b28894
TH		 1884extern unsigned int ata_bmdma_port_intr(struct ata_port *ap,
1885 struct ata_queued_cmd *qc);
1886extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance);
fe06e5f9
TH		 1887extern void ata_bmdma_error_handler(struct ata_port *ap);
1888extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
37f65b8b 1889extern void ata_bmdma_irq_clear(struct ata_port *ap);
9f2f7210
TH		 1890extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
1891extern void ata_bmdma_start(struct ata_queued_cmd *qc);
1892extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
1893extern u8 ata_bmdma_status(struct ata_port *ap);
c7087652
TH		 1894extern int ata_bmdma_port_start(struct ata_port *ap);
1895extern int ata_bmdma_port_start32(struct ata_port *ap);
9f2f7210
TH		 1896
1897#ifdef CONFIG_PCI
1898extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
c7087652 1899extern void ata_pci_bmdma_init(struct ata_host *host);
1c5afdf7
TH		 1900extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev,
1901 const struct ata_port_info * const * ppi,
1902 struct ata_host **r_host);
1903extern int ata_pci_bmdma_init_one(struct pci_dev *pdev,
1904 const struct ata_port_info * const * ppi,
1905 struct scsi_host_template *sht,
1906 void *host_priv, int hflags);
9f2f7210 1907#endif /* CONFIG_PCI */
9a7780c9 1908#endif /* CONFIG_ATA_BMDMA */
9f2f7210 1909
624d5c51 1910/**
9363c382 1911 * ata_sff_busy_wait - Wait for a port status register
624d5c51
TH		 1912 * @ap: Port to wait for.
1913 * @bits: bits that must be clear
1914 * @max: number of 10uS waits to perform
1915 *
1916 * Waits up to max*10 microseconds for the selected bits in the port's
1917 * status register to be cleared.
1918 * Returns final value of status register.
1919 *
1920 * LOCKING:
1921 * Inherited from caller.
1922 */
9363c382
TH		 1923static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits,
1924 unsigned int max)
624d5c51
TH		 1925{
1926 u8 status;
1927
1928 do {
1929 udelay(10);
5682ed33 1930 status = ap->ops->sff_check_status(ap);
624d5c51
TH		 1931 max--;
1932 } while (status != 0xff && (status & bits) && (max > 0));
1933
1934 return status;
1935}
1936
1937/**
1938 * ata_wait_idle - Wait for a port to be idle.
1939 * @ap: Port to wait for.
1940 *
1941 * Waits up to 10ms for port's BUSY and DRQ signals to clear.
1942 * Returns final value of status register.
1943 *
1944 * LOCKING:
1945 * Inherited from caller.
1946 */
1947static inline u8 ata_wait_idle(struct ata_port *ap)
1948{
9363c382 1949 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
624d5c51
TH		 1950
1951#ifdef ATA_DEBUG
1952 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
1953 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n",
1954 status);
1955#endif
1956
1957 return status;
1958}
127102ae 1959#endif /* CONFIG_ATA_SFF */
624d5c51 1960
1da177e4 1961#endif /* __LINUX_LIBATA_H__ */
Linux kernel - Deliverables
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