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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',
9bb9a39c 22 * as Documentation/driver-api/libata.rst
af36d7f0 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 48#else
dcd3ea81
CH		 49#define ATA_PRIMARY_IRQ(dev) 14
50#define ATA_SECONDARY_IRQ(dev) 15
a6d967a4 51#endif
2ec7df04 52
1da177e4 53/*
bfd60579
RD		 54 * compile-time options: to be removed as soon as all the drivers are
55 * converted to the new debugging mechanism
1da177e4
LT		 56 */
57#undef ATA_DEBUG /* debugging output */
58#undef ATA_VERBOSE_DEBUG /* yet more debugging output */
59#undef ATA_IRQ_TRAP /* define to ack screaming irqs */
60#undef ATA_NDEBUG /* define to disable quick runtime checks */
1da177e4
LT		 61
62
63/* note: prints function name for you */
64#ifdef ATA_DEBUG
1f938d06 65#define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
1da177e4 66#ifdef ATA_VERBOSE_DEBUG
1f938d06 67#define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
1da177e4
LT		 68#else
69#define VPRINTK(fmt, args...)
70#endif /* ATA_VERBOSE_DEBUG */
71#else
72#define DPRINTK(fmt, args...)
73#define VPRINTK(fmt, args...)
74#endif /* ATA_DEBUG */
75
1f938d06 76#define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args)
2c13b7ce 77
06296a1e
JP		 78#define ata_print_version_once(dev, version) \
79({ \
80 static bool __print_once; \
81 \
82 if (!__print_once) { \
83 __print_once = true; \
84 ata_print_version(dev, version); \
85 } \
86})
87
bfd60579
RD		 88/* NEW: debug levels */
89#define HAVE_LIBATA_MSG 1
90
91enum {
92 ATA_MSG_DRV = 0x0001,
93 ATA_MSG_INFO = 0x0002,
94 ATA_MSG_PROBE = 0x0004,
95 ATA_MSG_WARN = 0x0008,
96 ATA_MSG_MALLOC = 0x0010,
97 ATA_MSG_CTL = 0x0020,
98 ATA_MSG_INTR = 0x0040,
99 ATA_MSG_ERR = 0x0080,
100};
101
102#define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV)
103#define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO)
104#define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE)
105#define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN)
106#define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
107#define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL)
108#define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR)
109#define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR)
110
111static inline u32 ata_msg_init(int dval, int default_msg_enable_bits)
112{
113 if (dval < 0 || dval >= (sizeof(u32) * 8))
114 return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */
115 if (!dval)
116 return 0;
117 return (1 << dval) - 1;
118}
119
1da177e4
LT		 120/* defines only for the constants which don't work well as enums */
121#define ATA_TAG_POISON 0xfafbfcfdU
122
1da177e4
LT		 123enum {
124 /* various global constants */
125 LIBATA_MAX_PRD = ATA_MAX_PRD / 2,
d26fc955 126 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */
1da177e4 127 ATA_DEF_QUEUE = 1,
2ab7db1f 128 /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */
a6e6ce8e 129 ATA_MAX_QUEUE = 32,
2ab7db1f 130 ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1,
341c2c95 131 ATA_SHORT_PAUSE = 16,
1da177e4 132
140b5e59
TH		 133 ATAPI_MAX_DRAIN = 16 << 10,
134
b558eddd
TH		 135 ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1,
136
1da177e4 137 ATA_SHT_EMULATED = 1,
1da177e4 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
1da177e4 150 /* struct ata_device stuff */
949b38af
TH		 151 ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */
152 ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */
029f5468 153 ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */
88e49034 154 ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */
6fc49adb 155 ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */
6746544c
TH		 156 ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */
157 ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */
7d77b247 158 ATA_DFLAG_AN = (1 << 7), /* AN configured */
818831c8 159 ATA_DFLAG_TRUSTED = (1 << 8), /* device supports trusted send/recv */
91163006 160 ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */
2557164e 161 ATA_DFLAG_CFG_MASK = (1 << 12) - 1,
949b38af 162
2557164e
KCA		 163 ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */
164 ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */
054a5fba 165 ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */
00115e0f 166 ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */
45fabbb7 167 ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */
445d211b 168 ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */
ed36911c 169 ATA_DFLAG_NCQ_SEND_RECV = (1 << 19), /* device supports NCQ SEND and RECV */
8e061784 170 ATA_DFLAG_NCQ_PRIO = (1 << 20), /* device supports NCQ priority */
84f95243 171 ATA_DFLAG_NCQ_PRIO_ENABLE = (1 << 21), /* Priority cmds sent to dev */
f20ded38 172 ATA_DFLAG_INIT_MASK = (1 << 24) - 1,
1da177e4 173
f20ded38
TH		 174 ATA_DFLAG_DETACH = (1 << 24),
175 ATA_DFLAG_DETACHED = (1 << 25),
abdda733 176
b1354cbb 177 ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */
65fe1f0f 178 ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */
0d0cdb02 179 ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */
06dbde5f 180 ATA_DFLAG_D_SENSE = (1 << 29), /* Descriptor sense requested */
6d1003ae 181 ATA_DFLAG_ZAC = (1 << 30), /* ZAC device */
b1354cbb 182
1da177e4
LT		 183 ATA_DEV_UNKNOWN = 0, /* unknown device */
184 ATA_DEV_ATA = 1, /* ATA device */
185 ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */
186 ATA_DEV_ATAPI = 3, /* ATAPI device */
187 ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */
e0a71752
TH		 188 ATA_DEV_PMP = 5, /* SATA port multiplier */
189 ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */
190 ATA_DEV_SEMB = 7, /* SEMB */
191 ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */
9162c657 192 ATA_DEV_ZAC = 9, /* ZAC device */
3a92945b
HR		 193 ATA_DEV_ZAC_UNSUP = 10, /* ZAC device (unsupported) */
194 ATA_DEV_NONE = 11, /* 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),
069f8827 214 ATA_FLAG_NO_LPM = (1 << 2), /* host not happy with LPM */
ea013a9b 215 ATA_FLAG_NO_LOG_PAGE = (1 << 5), /* do not issue log page read */
949b38af
TH		 216 ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */
217 ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */
218 ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */
7395acb2
TH		 219 ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD
220 * doesn't handle PIO interrupts */
221 ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */
2a6e58d2
RW		 222 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */
223 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */
7395acb2 224 ATA_FLAG_DEBUGMSG = (1 << 13),
388539f3 225 ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */
b2a8bbe6 226 ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */
f834e49f 227 ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */
3cadbcc0 228 ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */
9f45cbd3 229 ATA_FLAG_AN = (1 << 18), /* controller supports AN */
e0a71752 230 ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */
40fb59e7 231 ATA_FLAG_FPDMA_AUX = (1 << 20), /* controller supports H2DFIS aux field */
18f7ba4c
KCA		 232 ATA_FLAG_EM = (1 << 21), /* driver supports enclosure
233 * management */
234 ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity
235 * led */
ae01b249 236 ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */
a1480a16 237 ATA_FLAG_SAS_HOST = (1 << 24), /* SAS host */
949b38af 238
b51e9e5d 239 /* bits 24:31 of ap->flags are reserved for LLD specific flags */
9ec957f2 240
e3cf95dd 241
b51e9e5d
TH		 242 /* struct ata_port pflags */
243 ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */
244 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */
245 ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */
246 ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */
247 ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */
b51e9e5d 248 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */
f4d6d004 249 ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */
afaa5c37 250 ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */
ece180d1
TH		 251 ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */
252 ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */
949b38af 253
b51e9e5d 254 ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */
500530f6 255 ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */
c05e6ff0 256 ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */
949b38af 257
e3cf95dd
AC		 258 ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */
259 ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */
8a3e33cf 260 ATA_PFLAG_EXTERNAL = (1 << 22), /* eSATA/external port */
e3cf95dd 261
949b38af
TH		 262 /* struct ata_queued_cmd flags */
263 ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */
001102d7 264 ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */
27197367 265 ATA_QCFLAG_IO = (1 << 3), /* standard IO command */
e61e0672 266 ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */
da917d69 267 ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */
e027bd36 268 ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */
03faab78 269 ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */
e61e0672 270
9ec957f2
TH		 271 ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */
272 ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */
273 ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */
1da177e4 274
4e5ec5db 275 /* host set flags */
cca3974e 276 ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */
ecef7253 277 ATA_HOST_STARTED = (1 << 1), /* Host started */
886ad09f 278 ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */
db63a4c8 279 ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */
9bec2e38 280
b8b275ef
TH		 281 /* bits 24:31 of host->flags are reserved for LLD specific flags */
282
1da177e4 283 /* various lengths of time */
341c2c95
TH		 284 ATA_TMOUT_BOOT = 30000, /* heuristic */
285 ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */
341c2c95 286 ATA_TMOUT_INTERNAL_QUICK = 5000,
45fabbb7 287 ATA_TMOUT_MAX_PARK = 30000,
1da177e4 288
b48d58f5
TH		 289 /*
290 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s
291 * is too much without parallel probing. Use 2s if parallel
292 * probing is available, 800ms otherwise.
88ff6eaf 293 */
b48d58f5
TH		 294 ATA_TMOUT_FF_WAIT_LONG = 2000,
295 ATA_TMOUT_FF_WAIT = 800,
88ff6eaf 296
705e76be
TH		 297 /* Spec mandates to wait for ">= 2ms" before checking status
298 * after reset. We wait 150ms, because that was the magic
299 * delay used for ATAPI devices in Hale Landis's ATADRVR, for
300 * the period of time between when the ATA command register is
301 * written, and then status is checked. Because waiting for
302 * "a while" before checking status is fine, post SRST, we
303 * perform this magic delay here as well.
304 *
305 * Old drivers/ide uses the 2mS rule and then waits for ready.
306 */
341c2c95 307 ATA_WAIT_AFTER_RESET = 150,
705e76be 308
9dadd45b
TH		 309 /* If PMP is supported, we have to do follow-up SRST. As some
310 * PMPs don't send D2H Reg FIS after hardreset, LLDs are
311 * advised to wait only for the following duration before
312 * doing SRST.
313 */
e7d3ef13 314 ATA_TMOUT_PMP_SRST_WAIT = 5000,
9dadd45b 315
09c5b480
GM		 316 /* When the LPM policy is set to ATA_LPM_MAX_POWER, there might
317 * be a spurious PHY event, so ignore the first PHY event that
318 * occurs within 10s after the policy change.
319 */
320 ATA_TMOUT_SPURIOUS_PHY = 10000,
321
1da177e4
LT		 322 /* ATA bus states */
323 BUS_UNKNOWN = 0,
324 BUS_DMA = 1,
325 BUS_IDLE = 2,
326 BUS_NOINTR = 3,
327 BUS_NODATA = 4,
328 BUS_TIMER = 5,
329 BUS_PIO = 6,
330 BUS_EDD = 7,
331 BUS_IDENTIFY = 8,
332 BUS_PACKET = 9,
333
334 /* SATA port states */
335 PORT_UNKNOWN = 0,
336 PORT_ENABLED = 1,
337 PORT_DISABLED = 2,
338
339 /* encoding various smaller bitmaps into a single
7dc951ae 340 * unsigned long bitmap
1da177e4 341 */
70cd071e
TH		 342 ATA_NR_PIO_MODES = 7,
343 ATA_NR_MWDMA_MODES = 5,
344 ATA_NR_UDMA_MODES = 8,
1da7b0d0
TH		 345
346 ATA_SHIFT_PIO = 0,
70cd071e
TH		 347 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES,
348 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES,
8e061784 349 ATA_SHIFT_PRIO = 6,
70cd071e 350
8e061784 351 ATA_PRIO_HIGH = 2,
cedc9a47
JG		 352 /* size of buffer to pad xfers ending on unaligned boundaries */
353 ATA_DMA_PAD_SZ = 4,
949b38af 354
0c247c55
TH		 355 /* ering size */
356 ATA_ERING_SIZE = 32,
357
31cc23b3
TH		 358 /* return values for ->qc_defer */
359 ATA_DEFER_LINK = 1,
360 ATA_DEFER_PORT = 2,
361
f3e81b19
TH		 362 /* desc_len for ata_eh_info and context */
363 ATA_EH_DESC_LEN = 80,
364
9be1e979
TH		 365 /* reset / recovery action types */
366 ATA_EH_REVALIDATE = (1 << 0),
cf480626
TH		 367 ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */
368 ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */
369 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
f9df58cb 370 ATA_EH_ENABLE_LINK = (1 << 3),
45fabbb7 371 ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */
9be1e979 372
45fabbb7 373 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK,
b5b3fa38 374 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET |
6b7ae954 375 ATA_EH_ENABLE_LINK,
9be1e979 376
f3e81b19 377 /* ata_eh_info->flags */
abdda733 378 ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */
1cdaf534
TH		 379 ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */
380 ATA_EHI_QUIET = (1 << 3), /* be quiet */
e2f3d75f 381 ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */
abdda733 382
0d64a233
TH		 383 ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */
384 ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */
385 ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */
386 ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */
89692c03 387 ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */
f3e81b19 388
0d64a233 389 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
13abf50d 390
848e4c68
TH		 391 /* mask of flags to transfer *to* the slave link */
392 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET,
393
a1e10f7e
TH		 394 /* max tries if error condition is still set after ->error_handler */
395 ATA_EH_MAX_TRIES = 5,
ad9e2762 396
5040ab67
TH		 397 /* sometimes resuming a link requires several retries */
398 ATA_LINK_RESUME_TRIES = 5,
399
14d2bac1
TH		 400 /* how hard are we gonna try to probe/recover devices */
401 ATA_PROBE_MAX_TRIES = 3,
022bdb07 402 ATA_EH_DEV_TRIES = 3,
e0a71752
TH		 403 ATA_EH_PMP_TRIES = 5,
404 ATA_EH_PMP_LINK_TRIES = 3,
405
bf1bff6f 406 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */
f5914a46 407
87fbc5a0
TH		 408 /* This should match the actual table size of
409 * ata_eh_cmd_timeout_table in libata-eh.c.
410 */
6013efd8 411 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6,
87fbc5a0 412
93590859 413 /* Horkage types. May be set by libata or controller on drives
25985edc 414 (some horkage may be drive/controller pair dependent */
93590859
AC		 415
416 ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */
6919a0a6
AC		 417 ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */
418 ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */
18d6e9d5 419 ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */
16c55b03 420 ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */
50af2fa1 421 ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */
93328e11 422 ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */
6bbfd53d 423 ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */
2d3b8eea 424 ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */
9ce8e307 425 ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */
6a87e42e
TH		 426 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands
427 not multiple of 16 bytes */
877d0310 428 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */
9062712f 429 ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */
d0cb43b3 430 ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */
388539f3 431 ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */
43c9c591 432 ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */
a32450e1 433 ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17), /* Set max sects to 65535 */
966fbe19 434 ATA_HORKAGE_ATAPI_DMADIR = (1 << 18), /* device requires dmadir */
f78dea06 435 ATA_HORKAGE_NO_NCQ_TRIM = (1 << 19), /* don't use queued TRIM */
ecd75ad5
TH		 436 ATA_HORKAGE_NOLPM = (1 << 20), /* don't use LPM */
437 ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21), /* some WDs have broken LPM */
e61f7d1c 438 ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),/* guarantees zero after trim */
7cfdfdc8 439 ATA_HORKAGE_NO_DMA_LOG = (1 << 23), /* don't use DMA for log read */
71d126fd 440 ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */
af34d637 441 ATA_HORKAGE_MAX_SEC_1024 = (1 << 25), /* Limit max sects to 1024 */
b3a70601 442
2dcb407e 443 /* DMA mask for user DMA control: User visible values; DO NOT
b3a70601
AC		 444 renumber */
445 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */
446 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */
447 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */
ceb0c642
TH		 448
449 /* ATAPI command types */
450 ATAPI_READ = 0, /* READs */
451 ATAPI_WRITE = 1, /* WRITEs */
452 ATAPI_READ_CD = 2, /* READ CD [MSF] */
e52dcc48
TH		 453 ATAPI_PASS_THRU = 3, /* SAT pass-thru */
454 ATAPI_MISC = 4, /* the rest */
624d5c51
TH		 455
456 /* Timing constants */
457 ATA_TIMING_SETUP = (1 << 0),
458 ATA_TIMING_ACT8B = (1 << 1),
459 ATA_TIMING_REC8B = (1 << 2),
460 ATA_TIMING_CYC8B = (1 << 3),
461 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
462 ATA_TIMING_CYC8B,
463 ATA_TIMING_ACTIVE = (1 << 4),
464 ATA_TIMING_RECOVER = (1 << 5),
3ada9c12
DD		 465 ATA_TIMING_DMACK_HOLD = (1 << 6),
466 ATA_TIMING_CYCLE = (1 << 7),
467 ATA_TIMING_UDMA = (1 << 8),
624d5c51
TH		 468 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
469 ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
470 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
3ada9c12
DD		 471 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE |
472 ATA_TIMING_UDMA,
f1bce7f8
TH		 473
474 /* ACPI constants */
475 ATA_ACPI_FILTER_SETXFER = 1 << 0,
476 ATA_ACPI_FILTER_LOCK = 1 << 1,
477 ATA_ACPI_FILTER_DIPM = 1 << 2,
fa5b561c
TH		 478 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */
479 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */
f1bce7f8
TH		 480
481 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER |
482 ATA_ACPI_FILTER_LOCK |
483 ATA_ACPI_FILTER_DIPM,
1da177e4
LT		 484};
485
7dc951ae
TH		 486enum ata_xfer_mask {
487 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1)
488 << ATA_SHIFT_PIO,
489 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1)
490 << ATA_SHIFT_MWDMA,
491 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1)
492 << ATA_SHIFT_UDMA,
493};
494
14be71f4 495enum hsm_task_states {
c56b14d2 496 HSM_ST_IDLE, /* no command on going */
71527647
AL		 497 HSM_ST_FIRST, /* (waiting the device to)
498 write CDB or first data block */
c56b14d2
AL		 499 HSM_ST, /* (waiting the device to) transfer data */
500 HSM_ST_LAST, /* (waiting the device to) complete command */
c56b14d2 501 HSM_ST_ERR, /* error */
1da177e4
LT		 502};
503
a7dac447 504enum ata_completion_errors {
11a56d24
TH		 505 AC_ERR_DEV = (1 << 0), /* device reported error */
506 AC_ERR_HSM = (1 << 1), /* host state machine violation */
507 AC_ERR_TIMEOUT = (1 << 2), /* timeout */
508 AC_ERR_MEDIA = (1 << 3), /* media error */
509 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */
510 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */
511 AC_ERR_SYSTEM = (1 << 6), /* system error */
512 AC_ERR_INVALID = (1 << 7), /* invalid argument */
513 AC_ERR_OTHER = (1 << 8), /* unknown */
55a8e2c8 514 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */
5335b729 515 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */
a7dac447
JG		 516};
517
c93b263e
TH		 518/*
519 * Link power management policy: If you alter this, you also need to
520 * alter libata-scsi.c (for the ascii descriptions)
521 */
522enum ata_lpm_policy {
523 ATA_LPM_UNKNOWN,
524 ATA_LPM_MAX_POWER,
525 ATA_LPM_MED_POWER,
f4ac6476 526 ATA_LPM_MED_POWER_WITH_DIPM, /* Med power + DIPM as win IRST does */
82544793
SP		 527 ATA_LPM_MIN_POWER_WITH_PARTIAL, /* Min Power + partial and slumber */
528 ATA_LPM_MIN_POWER, /* Min power + no partial (slumber only) */
c93b263e
TH		 529};
530
6b7ae954
TH		 531enum ata_lpm_hints {
532 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */
533 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */
fb329633 534 ATA_LPM_WAKE_ONLY = (1 << 2), /* only wake up link */
6b7ae954
TH		 535};
536
1da177e4
LT		 537/* forward declarations */
538struct scsi_device;
539struct ata_port_operations;
540struct ata_port;
cc0680a5 541struct ata_link;
1da177e4
LT		 542struct ata_queued_cmd;
543
544/* typedefs */
77853bf2 545typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
cc0680a5
TH		 546typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
547typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
d4b2bab4 548 unsigned long deadline);
cc0680a5 549typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
1da177e4 550
ee959b00 551extern struct device_attribute dev_attr_link_power_management_policy;
45fabbb7 552extern struct device_attribute dev_attr_unload_heads;
84f95243 553extern struct device_attribute dev_attr_ncq_prio_enable;
18f7ba4c
KCA		 554extern struct device_attribute dev_attr_em_message_type;
555extern struct device_attribute dev_attr_em_message;
556extern struct device_attribute dev_attr_sw_activity;
557
558enum sw_activity {
559 OFF,
560 BLINK_ON,
561 BLINK_OFF,
562};
ca77329f 563
dc34e7e1
SS		 564struct ata_taskfile {
565 unsigned long flags; /* ATA_TFLAG_xxx */
566 u8 protocol; /* ATA_PROT_xxx */
567
568 u8 ctl; /* control reg */
569
570 u8 hob_feature; /* additional data */
571 u8 hob_nsect; /* to support LBA48 */
572 u8 hob_lbal;
573 u8 hob_lbam;
574 u8 hob_lbah;
575
576 u8 feature;
577 u8 nsect;
578 u8 lbal;
579 u8 lbam;
580 u8 lbah;
581
582 u8 device;
583
584 u8 command; /* IO operation */
8be5ad9a
MC		 585
586 u32 auxiliary; /* auxiliary field */
587 /* from SATA 3.1 and */
588 /* ATA-8 ACS-3 */
dc34e7e1
SS		 589};
590
127102ae 591#ifdef CONFIG_ATA_SFF
1da177e4 592struct ata_ioports {
0d5ff566
TH		 593 void __iomem *cmd_addr;
594 void __iomem *data_addr;
595 void __iomem *error_addr;
596 void __iomem *feature_addr;
597 void __iomem *nsect_addr;
598 void __iomem *lbal_addr;
599 void __iomem *lbam_addr;
600 void __iomem *lbah_addr;
601 void __iomem *device_addr;
602 void __iomem *status_addr;
603 void __iomem *command_addr;
604 void __iomem *altstatus_addr;
605 void __iomem *ctl_addr;
9a7780c9 606#ifdef CONFIG_ATA_BMDMA
0d5ff566 607 void __iomem *bmdma_addr;
9a7780c9 608#endif /* CONFIG_ATA_BMDMA */
0d5ff566 609 void __iomem *scr_addr;
1da177e4 610};
127102ae 611#endif /* CONFIG_ATA_SFF */
1da177e4 612
cca3974e 613struct ata_host {
1da177e4
LT		 614 spinlock_t lock;
615 struct device *dev;
0d5ff566 616 void __iomem * const *iomap;
1da177e4 617 unsigned int n_ports;
1a112d10 618 unsigned int n_tags; /* nr of NCQ tags */
1da177e4 619 void *private_data;
029cfd6b 620 struct ata_port_operations *ops;
5444a6f4 621 unsigned long flags;
c0c362b6
TH		 622
623 struct mutex eh_mutex;
624 struct task_struct *eh_owner;
625
032af1ce 626 struct ata_port *simplex_claimed; /* channel owning the DMA */
f0eb62b8 627 struct ata_port *ports[0];
1da177e4
LT		 628};
629
630struct ata_queued_cmd {
631 struct ata_port *ap;
632 struct ata_device *dev;
633
634 struct scsi_cmnd *scsicmd;
635 void (*scsidone)(struct scsi_cmnd *);
636
637 struct ata_taskfile tf;
638 u8 cdb[ATAPI_CDB_LEN];
639
640 unsigned long flags; /* ATA_QCFLAG_xxx */
641 unsigned int tag;
642 unsigned int n_elem;
5825627c 643 unsigned int orig_n_elem;
1da177e4
LT		 644
645 int dma_dir;
646
5a5dbd18 647 unsigned int sect_size;
cedc9a47 648
1da177e4 649 unsigned int nbytes;
aacda375 650 unsigned int extrabytes;
1da177e4
LT		 651 unsigned int curbytes;
652
1da177e4 653 struct scatterlist sgent;
1da177e4 654
ff2aeb1e 655 struct scatterlist *sg;
1da177e4 656
b34e9042
RK		 657 struct scatterlist *cursg;
658 unsigned int cursg_ofs;
659
a22e2eb0 660 unsigned int err_mask;
e61e0672 661 struct ata_taskfile result_tf;
1da177e4
LT		 662 ata_qc_cb_t complete_fn;
663
1da177e4 664 void *private_data;
1c50dc83 665 void *lldd_task;
1da177e4
LT		 666};
667
cca3974e 668struct ata_port_stats {
1da177e4
LT		 669 unsigned long unhandled_irq;
670 unsigned long idle_irq;
671 unsigned long rw_reqbuf;
672};
673
0c247c55 674struct ata_ering_entry {
3884f7b0 675 unsigned int eflags;
0c247c55
TH		 676 unsigned int err_mask;
677 u64 timestamp;
678};
679
680struct ata_ering {
681 int cursor;
682 struct ata_ering_entry ring[ATA_ERING_SIZE];
683};
684
1da177e4 685struct ata_device {
9af5c9c9 686 struct ata_link *link;
72fa4b74 687 unsigned int devno; /* 0 or 1 */
75683fe7 688 unsigned int horkage; /* List of broken features */
6866e7bc 689 unsigned long flags; /* ATA_DFLAG_xxx */
3edebac4 690 struct scsi_device *sdev; /* attached SCSI device */
95514fd8 691 void *private_data;
fafbae87 692#ifdef CONFIG_ATA_ACPI
398e0782 693 union acpi_object *gtf_cache;
110f66d2 694 unsigned int gtf_filter;
afe75951
AL		 695#endif
696#ifdef CONFIG_SATA_ZPODD
697 void *zpodd;
fafbae87 698#endif
d9027470 699 struct device tdev;
99cf610a 700 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */
72fa4b74 701 u64 n_sectors; /* size of device, if ATA */
5920dadf 702 u64 n_native_sectors; /* native size, if ATA */
1da177e4 703 unsigned int class; /* ATA_DEV_xxx */
45fabbb7 704 unsigned long unpark_deadline;
e0a71752 705
1da177e4
LT		 706 u8 pio_mode;
707 u8 dma_mode;
708 u8 xfer_mode;
709 unsigned int xfer_shift; /* ATA_SHIFT_xxx */
710
8cbd6df1
AL		 711 unsigned int multi_count; /* sectors count for
712 READ/WRITE MULTIPLE */
b00eec1d 713 unsigned int max_sectors; /* per-device max sectors */
6e7846e9 714 unsigned int cdb_len;
8bf62ece 715
acf356b1 716 /* per-dev xfer mask */
7dc951ae
TH		 717 unsigned long pio_mask;
718 unsigned long mwdma_mask;
719 unsigned long udma_mask;
acf356b1 720
8bf62ece
AL		 721 /* for CHS addressing */
722 u16 cylinders; /* Number of cylinders */
723 u16 heads; /* Number of heads */
724 u16 sectors; /* Number of sectors per track */
0c247c55 725
f7e98930
JG		 726 union {
727 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
728 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
4ee34ea3 729 } ____cacheline_aligned;
99cf610a 730
803739d2
SH		 731 /* DEVSLP Timing Variables from Identify Device Data Log */
732 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE];
65fe1f0f 733
ed36911c
MC		 734 /* NCQ send and receive log subcommand support */
735 u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE];
284b3b77 736 u8 ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_SIZE];
ed36911c 737
6d1003ae
HR		 738 /* ZAC zone configuration */
739 u32 zac_zoned_cap;
740 u32 zac_zones_optimal_open;
741 u32 zac_zones_optimal_nonseq;
742 u32 zac_zones_max_open;
743
99cf610a
TH		 744 /* error history */
745 int spdn_cnt;
746 /* ering is CLEAR_END, read comment above CLEAR_END */
747 struct ata_ering ering;
1da177e4
LT		 748};
749
99cf610a
TH		 750/* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are
751 * cleared to zero on ata_dev_init().
72fa4b74 752 */
99cf610a
TH		 753#define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
754#define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
72fa4b74 755
f3e81b19
TH		 756struct ata_eh_info {
757 struct ata_device *dev; /* offending device */
758 u32 serror; /* SError from LLDD */
759 unsigned int err_mask; /* port-wide err_mask */
760 unsigned int action; /* ATA_EH_* action mask */
47005f25 761 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */
f3e81b19 762 unsigned int flags; /* ATA_EHI_* flags */
abdda733 763
abdda733
TH		 764 unsigned int probe_mask;
765
f3e81b19
TH		 766 char desc[ATA_EH_DESC_LEN];
767 int desc_len;
768};
769
770struct ata_eh_context {
771 struct ata_eh_info i;
772 int tries[ATA_MAX_DEVICES];
87fbc5a0
TH		 773 int cmd_timeout_idx[ATA_MAX_DEVICES]
774 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE];
abdda733
TH		 775 unsigned int classes[ATA_MAX_DEVICES];
776 unsigned int did_probe_mask;
45fabbb7 777 unsigned int unloaded_mask;
00115e0f
TH		 778 unsigned int saved_ncq_enabled;
779 u8 saved_xfer_mode[ATA_MAX_DEVICES];
0a2c0f56
TH		 780 /* timestamp for the last reset attempt or success */
781 unsigned long last_reset;
f3e81b19
TH		 782};
783
64578a3d
TH		 784struct ata_acpi_drive
785{
786 u32 pio;
787 u32 dma;
788} __packed;
789
790struct ata_acpi_gtm {
791 struct ata_acpi_drive drive[2];
792 u32 flags;
793} __packed;
794
9af5c9c9
TH		 795struct ata_link {
796 struct ata_port *ap;
8989805d 797 int pmp; /* port multiplier port # */
9af5c9c9 798
d9027470 799 struct device tdev;
9af5c9c9
TH		 800 unsigned int active_tag; /* active tag on this link */
801 u32 sactive; /* active NCQ commands */
802
0c88758b
TH		 803 unsigned int flags; /* ATA_LFLAG_xxx */
804
d127ea7b 805 u32 saved_scontrol; /* SControl on probe */
9af5c9c9
TH		 806 unsigned int hw_sata_spd_limit;
807 unsigned int sata_spd_limit;
808 unsigned int sata_spd; /* current SATA PHY speed */
6b7ae954 809 enum ata_lpm_policy lpm_policy;
9af5c9c9
TH		 810
811 /* record runtime error info, protected by host_set lock */
812 struct ata_eh_info eh_info;
813 /* EH context */
814 struct ata_eh_context eh_context;
815
816 struct ata_device device[ATA_MAX_DEVICES];
09c5b480
GM		 817
818 unsigned long last_lpm_change; /* when last LPM change happened */
9af5c9c9 819};
d9027470
GG		 820#define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
821#define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
9af5c9c9 822
1da177e4 823struct ata_port {
cca3974e 824 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */
029cfd6b 825 struct ata_port_operations *ops;
ba6a1308 826 spinlock_t *lock;
e3cf95dd
AC		 827 /* Flags owned by the EH context. Only EH should touch these once the
828 port is active */
1da177e4 829 unsigned long flags; /* ATA_FLAG_xxx */
e3cf95dd 830 /* Flags that change dynamically, protected by ap->lock */
b51e9e5d 831 unsigned int pflags; /* ATA_PFLAG_xxx */
44877b4e 832 unsigned int print_id; /* user visible unique port ID */
e628dc99 833 unsigned int local_port_no; /* host local port num */
44877b4e 834 unsigned int port_no; /* 0 based port no. inside the host */
1da177e4 835
127102ae 836#ifdef CONFIG_ATA_SFF
1da177e4 837 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */
1da177e4
LT		 838 u8 ctl; /* cache of ATA control register */
839 u8 last_ctl; /* Cache last written value */
ea3c6450 840 struct ata_link* sff_pio_task_link; /* link currently used */
c429137a 841 struct delayed_work sff_pio_task;
9a7780c9 842#ifdef CONFIG_ATA_BMDMA
f60d7011
TH		 843 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */
844 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */
9a7780c9 845#endif /* CONFIG_ATA_BMDMA */
5fe7454a
TH		 846#endif /* CONFIG_ATA_SFF */
847
1da177e4
LT		 848 unsigned int pio_mask;
849 unsigned int mwdma_mask;
850 unsigned int udma_mask;
851 unsigned int cbl; /* cable type; ATA_CBL_xxx */
1da177e4
LT		 852
853 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE];
12cb5ce1 854 unsigned long sas_tag_allocated; /* for sas tag allocation only */
dedaf2b0 855 unsigned int qc_active;
da917d69 856 int nr_active_links; /* #links with active qcs */
12cb5ce1 857 unsigned int sas_last_tag; /* track next tag hw expects */
dedaf2b0 858
b1c72916
TH		 859 struct ata_link link; /* host default link */
860 struct ata_link *slave_link; /* see ata_slave_link_init() */
1da177e4 861
8989805d
TH		 862 int nr_pmp_links; /* nr of available PMP links */
863 struct ata_link *pmp_link; /* array of PMP links */
da917d69 864 struct ata_link *excl_link; /* for PMP qc exclusion */
8989805d 865
cca3974e
JG		 866 struct ata_port_stats stats;
867 struct ata_host *host;
2f1f610b 868 struct device *dev;
d9027470 869 struct device tdev;
1da177e4 870
ad72cf98 871 struct mutex scsi_scan_mutex;
52bad64d 872 struct delayed_work hotplug_task;
3b01b8af 873 struct work_struct scsi_rescan_task;
86e45b6b 874
14be71f4 875 unsigned int hsm_task_state;
1da177e4 876
bfd60579 877 u32 msg_enable;
a72ec4ce 878 struct list_head eh_done_q;
c6cf9e99 879 wait_queue_head_t eh_wait_q;
a1e10f7e 880 int eh_tries;
45fabbb7 881 struct completion park_req_pending;
bfd60579 882
500530f6 883 pm_message_t pm_mesg;
6b7ae954 884 enum ata_lpm_policy target_lpm_policy;
500530f6 885
5ddf24c5
TH		 886 struct timer_list fastdrain_timer;
887 unsigned long fastdrain_cnt;
888
18f7ba4c 889 int em_message_type;
1da177e4 890 void *private_data;
fe635c7e 891
fafbae87 892#ifdef CONFIG_ATA_ACPI
c05e6ff0 893 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */
fafbae87 894#endif
84bda12a
TH		 895 /* owned by EH */
896 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
1da177e4
LT		 897};
898
029cfd6b
TH		 899/* The following initializer overrides a method to NULL whether one of
900 * its parent has the method defined or not. This is equivalent to
901 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant
902 * expression and thus can't be used as an initializer.
903 */
904#define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
905
1da177e4 906struct ata_port_operations {
c1bc899f
TH		 907 /*
908 * Command execution
909 */
910 int (*qc_defer)(struct ata_queued_cmd *qc);
911 int (*check_atapi_dma)(struct ata_queued_cmd *qc);
912 void (*qc_prep)(struct ata_queued_cmd *qc);
913 unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
22183bf5 914 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc);
1da177e4 915
c1bc899f
TH		 916 /*
917 * Configuration and exception handling
918 */
919 int (*cable_detect)(struct ata_port *ap);
920 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask);
921 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
922 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
923 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
963e4975 924 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id);
1da177e4 925
c1bc899f 926 void (*dev_config)(struct ata_device *dev);
1da177e4 927
c1bc899f
TH		 928 void (*freeze)(struct ata_port *ap);
929 void (*thaw)(struct ata_port *ap);
a1efdaba
TH		 930 ata_prereset_fn_t prereset;
931 ata_reset_fn_t softreset;
932 ata_reset_fn_t hardreset;
933 ata_postreset_fn_t postreset;
934 ata_prereset_fn_t pmp_prereset;
935 ata_reset_fn_t pmp_softreset;
936 ata_reset_fn_t pmp_hardreset;
937 ata_postreset_fn_t pmp_postreset;
c1bc899f 938 void (*error_handler)(struct ata_port *ap);
c96f1732 939 void (*lost_interrupt)(struct ata_port *ap);
c1bc899f 940 void (*post_internal_cmd)(struct ata_queued_cmd *qc);
e4a9c373
DW		 941 void (*sched_eh)(struct ata_port *ap);
942 void (*end_eh)(struct ata_port *ap);
c1bc899f
TH		 943
944 /*
945 * Optional features
946 */
82ef04fb
TH		 947 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val);
948 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val);
c1bc899f
TH		 949 void (*pmp_attach)(struct ata_port *ap);
950 void (*pmp_detach)(struct ata_port *ap);
6b7ae954
TH		 951 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy,
952 unsigned hints);
c1bc899f
TH		 953
954 /*
955 * Start, stop, suspend and resume
956 */
957 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg);
958 int (*port_resume)(struct ata_port *ap);
959 int (*port_start)(struct ata_port *ap);
960 void (*port_stop)(struct ata_port *ap);
961 void (*host_stop)(struct ata_host *host);
962
127102ae 963#ifdef CONFIG_ATA_SFF
c1bc899f
TH		 964 /*
965 * SFF / taskfile oriented ops
966 */
5682ed33 967 void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
41dec29b 968 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl);
5682ed33
TH		 969 u8 (*sff_check_status)(struct ata_port *ap);
970 u8 (*sff_check_altstatus)(struct ata_port *ap);
971 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
972 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
973 void (*sff_exec_command)(struct ata_port *ap,
974 const struct ata_taskfile *tf);
989e0aac 975 unsigned int (*sff_data_xfer)(struct ata_queued_cmd *qc,
5682ed33 976 unsigned char *buf, unsigned int buflen, int rw);
e42a542b 977 void (*sff_irq_on)(struct ata_port *);
27943620 978 bool (*sff_irq_check)(struct ata_port *);
5682ed33 979 void (*sff_irq_clear)(struct ata_port *);
8244cd05 980 void (*sff_drain_fifo)(struct ata_queued_cmd *qc);
5682ed33 981
9a7780c9 982#ifdef CONFIG_ATA_BMDMA
c1bc899f
TH		 983 void (*bmdma_setup)(struct ata_queued_cmd *qc);
984 void (*bmdma_start)(struct ata_queued_cmd *qc);
985 void (*bmdma_stop)(struct ata_queued_cmd *qc);
986 u8 (*bmdma_status)(struct ata_port *ap);
9a7780c9 987#endif /* CONFIG_ATA_BMDMA */
127102ae 988#endif /* CONFIG_ATA_SFF */
c1bc899f 989
18f7ba4c
KCA		 990 ssize_t (*em_show)(struct ata_port *ap, char *buf);
991 ssize_t (*em_store)(struct ata_port *ap, const char *message,
992 size_t size);
993 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf);
994 ssize_t (*sw_activity_store)(struct ata_device *dev,
995 enum sw_activity val);
439d7a35
ML		 996 ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state,
997 ssize_t size);
998
c1bc899f
TH		 999 /*
1000 * Obsolete
9ec957f2 1001 */
c1bc899f
TH		 1002 void (*phy_reset)(struct ata_port *ap);
1003 void (*eng_timeout)(struct ata_port *ap);
029cfd6b
TH		 1004
1005 /*
1006 * ->inherits must be the last field and all the preceding
1007 * fields must be pointers.
1008 */
1009 const struct ata_port_operations *inherits;
1da177e4
LT		 1010};
1011
1012struct ata_port_info {
cca3974e 1013 unsigned long flags;
0c88758b 1014 unsigned long link_flags;
1da177e4
LT		 1015 unsigned long pio_mask;
1016 unsigned long mwdma_mask;
1017 unsigned long udma_mask;
029cfd6b 1018 struct ata_port_operations *port_ops;
e99f8b5e 1019 void *private_data;
1da177e4
LT		 1020};
1021
452503f9
AC		 1022struct ata_timing {
1023 unsigned short mode; /* ATA mode */
1024 unsigned short setup; /* t1 */
1025 unsigned short act8b; /* t2 for 8-bit I/O */
1026 unsigned short rec8b; /* t2i for 8-bit I/O */
1027 unsigned short cyc8b; /* t0 for 8-bit I/O */
1028 unsigned short active; /* t2 or tD */
1029 unsigned short recover; /* t2i or tK */
3ada9c12 1030 unsigned short dmack_hold; /* tj */
452503f9
AC		 1031 unsigned short cycle; /* t0 */
1032 unsigned short udma; /* t2CYCTYP/2 */
1033};
1034
624d5c51
TH		 1035/*
1036 * Core layer - drivers/ata/libata-core.c
1037 */
e9c83914
TH		 1038extern const unsigned long sata_deb_timing_normal[];
1039extern const unsigned long sata_deb_timing_hotplug[];
1040extern const unsigned long sata_deb_timing_long[];
1041
029cfd6b 1042extern struct ata_port_operations ata_dummy_port_ops;
21b0ad4f 1043extern const struct ata_port_info ata_dummy_port_info;
dd5b06c4 1044
b1c04e80 1045static inline bool ata_is_atapi(u8 prot)
dc34e7e1 1046{
37f92d77 1047 return prot & ATA_PROT_FLAG_ATAPI;
dc34e7e1
SS		 1048}
1049
b1c04e80 1050static inline bool ata_is_pio(u8 prot)
dc34e7e1 1051{
37f92d77 1052 return prot & ATA_PROT_FLAG_PIO;
dc34e7e1
SS		 1053}
1054
b1c04e80 1055static inline bool ata_is_dma(u8 prot)
dc34e7e1 1056{
37f92d77 1057 return prot & ATA_PROT_FLAG_DMA;
dc34e7e1
SS		 1058}
1059
b1c04e80 1060static inline bool ata_is_ncq(u8 prot)
dc34e7e1 1061{
37f92d77 1062 return prot & ATA_PROT_FLAG_NCQ;
dc34e7e1
SS		 1063}
1064
b1c04e80 1065static inline bool ata_is_data(u8 prot)
dc34e7e1 1066{
37f92d77 1067 return prot & (ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA);
dc34e7e1
SS		 1068}
1069
1070static inline int is_multi_taskfile(struct ata_taskfile *tf)
1071{
1072 return (tf->command == ATA_CMD_READ_MULTI) ||
1073 (tf->command == ATA_CMD_WRITE_MULTI) ||
1074 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
1075 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
1076 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
1077}
1078
e9c83914
TH		 1079static inline const unsigned long *
1080sata_ehc_deb_timing(struct ata_eh_context *ehc)
1081{
1082 if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
1083 return sata_deb_timing_hotplug;
1084 else
1085 return sata_deb_timing_normal;
1086}
d7bb4cc7 1087
dd5b06c4
TH		 1088static inline int ata_port_is_dummy(struct ata_port *ap)
1089{
1090 return ap->ops == &ata_dummy_port_ops;
1091}
1092
936fd732 1093extern int sata_set_spd(struct ata_link *link);
0aa1113d 1094extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
aa2731ad
TH		 1095extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
1096 int (*check_ready)(struct ata_link *link));
936fd732
TH		 1097extern int sata_link_debounce(struct ata_link *link,
1098 const unsigned long *params, unsigned long deadline);
1099extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
1100 unsigned long deadline);
1152b261
TH		 1101extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
1102 bool spm_wakeup);
cc0680a5 1103extern int sata_link_hardreset(struct ata_link *link,
9dadd45b
TH		 1104 const unsigned long *timing, unsigned long deadline,
1105 bool *online, int (*check_ready)(struct ata_link *));
57c9efdf
TH		 1106extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
1107 unsigned long deadline);
203c75b8 1108extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
2855568b 1109
f3187195 1110extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
f5cda257
TH		 1111extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
1112 const struct ata_port_info * const * ppi, int n_ports);
b1c72916 1113extern int ata_slave_link_init(struct ata_port *ap);
ecef7253 1114extern int ata_host_start(struct ata_host *host);
f3187195
TH		 1115extern int ata_host_register(struct ata_host *host,
1116 struct scsi_host_template *sht);
f5cda257
TH		 1117extern int ata_host_activate(struct ata_host *host, int irq,
1118 irq_handler_t irq_handler, unsigned long irq_flags,
1119 struct scsi_host_template *sht);
0529c159 1120extern void ata_host_detach(struct ata_host *host);
8d8e7d13 1121extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *);
193515d5 1122extern int ata_scsi_detect(struct scsi_host_template *sht);
1da177e4 1123extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
f281233d 1124extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd);
94be9a58
JG		 1125extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev,
1126 int cmd, void __user *arg);
80289167 1127extern void ata_sas_port_destroy(struct ata_port *);
cca3974e 1128extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
80289167 1129 struct ata_port_info *, struct Scsi_Host *);
b2024459
DW		 1130extern void ata_sas_async_probe(struct ata_port *ap);
1131extern int ata_sas_sync_probe(struct ata_port *ap);
80289167
BK		 1132extern int ata_sas_port_init(struct ata_port *);
1133extern int ata_sas_port_start(struct ata_port *ap);
1134extern void ata_sas_port_stop(struct ata_port *ap);
1135extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
b27dcfb0 1136extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap);
b6a05c82 1137extern enum blk_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd);
936fd732
TH		 1138extern int sata_scr_valid(struct ata_link *link);
1139extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
1140extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
1141extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
b5b3fa38
TH		 1142extern bool ata_link_online(struct ata_link *link);
1143extern bool ata_link_offline(struct ata_link *link);
6ffa01d8 1144#ifdef CONFIG_PM
cca3974e
JG		 1145extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
1146extern void ata_host_resume(struct ata_host *host);
bc6e7c4b
DW		 1147extern void ata_sas_port_suspend(struct ata_port *ap);
1148extern void ata_sas_port_resume(struct ata_port *ap);
2fcbdcb4 1149#else
bc6e7c4b 1150static inline void ata_sas_port_suspend(struct ata_port *ap)
2fcbdcb4 1151{
2fcbdcb4 1152}
a5a65699
RD		 1153static inline void ata_sas_port_resume(struct ata_port *ap)
1154{
1155}
6ffa01d8 1156#endif
67846b30 1157extern int ata_ratelimit(void);
97750ceb
TH		 1158extern void ata_msleep(struct ata_port *ap, unsigned int msecs);
1159extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask,
1160 u32 val, unsigned long interval, unsigned long timeout);
436d34b3 1161extern int atapi_cmd_type(u8 opcode);
9977126c
TH		 1162extern void ata_tf_to_fis(const struct ata_taskfile *tf,
1163 u8 pmp, int is_cmd, u8 *fis);
057ace5e 1164extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
7dc951ae
TH		 1165extern unsigned long ata_pack_xfermask(unsigned long pio_mask,
1166 unsigned long mwdma_mask, unsigned long udma_mask);
1167extern void ata_unpack_xfermask(unsigned long xfer_mask,
1168 unsigned long *pio_mask, unsigned long *mwdma_mask,
1169 unsigned long *udma_mask);
1170extern u8 ata_xfer_mask2mode(unsigned long xfer_mask);
1171extern unsigned long ata_xfer_mode2mask(u8 xfer_mode);
1172extern int ata_xfer_mode2shift(unsigned long xfer_mode);
1173extern const char *ata_mode_string(unsigned long xfer_mask);
1174extern unsigned long ata_id_xfermask(const u16 *id);
31cc23b3 1175extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
e46834cd 1176extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);
1da177e4
LT		 1177extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
1178 unsigned int n_elem);
057ace5e 1179extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
10305f0f 1180extern void ata_dev_disable(struct ata_device *adev);
6a62a04d
TH		 1181extern void ata_id_string(const u16 *id, unsigned char *s,
1182 unsigned int ofs, unsigned int len);
1183extern void ata_id_c_string(const u16 *id, unsigned char *s,
1184 unsigned int ofs, unsigned int len);
963e4975
AC		 1185extern unsigned int ata_do_dev_read_id(struct ata_device *dev,
1186 struct ata_taskfile *tf, u16 *id);
f686bcb8 1187extern void ata_qc_complete(struct ata_queued_cmd *qc);
79f97dad 1188extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active);
b27dcfb0 1189extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd);
1da177e4
LT		 1190extern int ata_std_bios_param(struct scsi_device *sdev,
1191 struct block_device *bdev,
1192 sector_t capacity, int geom[]);
d8d9129e 1193extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
1da177e4 1194extern int ata_scsi_slave_config(struct scsi_device *sdev);
83c47bcb 1195extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
a6e6ce8e 1196extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
db5ed4df 1197 int queue_depth);
f6e67035 1198extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev,
db5ed4df 1199 int queue_depth);
3373efd8 1200extern struct ata_device *ata_dev_pair(struct ata_device *adev);
0260731f 1201extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
0e0b494c
JB		 1202extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap);
1203extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q);
8393b811 1204extern bool sata_lpm_ignore_phy_events(struct ata_link *link);
1da177e4 1205
be0d18df
AC		 1206extern int ata_cable_40wire(struct ata_port *ap);
1207extern int ata_cable_80wire(struct ata_port *ap);
1208extern int ata_cable_sata(struct ata_port *ap);
c88f90c3 1209extern int ata_cable_ignore(struct ata_port *ap);
be0d18df
AC		 1210extern int ata_cable_unknown(struct ata_port *ap);
1211
624d5c51 1212/* Timing helpers */
1bc4ccff 1213extern unsigned int ata_pio_need_iordy(const struct ata_device *);
6357357c 1214extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
452503f9
AC		 1215extern int ata_timing_compute(struct ata_device *, unsigned short,
1216 struct ata_timing *, int, int);
1217extern void ata_timing_merge(const struct ata_timing *,
1218 const struct ata_timing *, struct ata_timing *,
1219 unsigned int);
a0f79b92 1220extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);
452503f9 1221
624d5c51
TH		 1222/* PCI */
1223#ifdef CONFIG_PCI
1224struct pci_dev;
1225
1226struct pci_bits {
1227 unsigned int reg; /* PCI config register to read */
1228 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
1229 unsigned long mask;
1230 unsigned long val;
452503f9
AC		 1231};
1232
624d5c51
TH		 1233extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
1234extern void ata_pci_remove_one(struct pci_dev *pdev);
1235
1236#ifdef CONFIG_PM
1237extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
1238extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
1239extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
1240extern int ata_pci_device_resume(struct pci_dev *pdev);
1241#endif /* CONFIG_PM */
1242#endif /* CONFIG_PCI */
1243
b7db04d9
BN		 1244struct platform_device;
1245
1246extern int ata_platform_remove_one(struct platform_device *pdev);
1247
624d5c51
TH		 1248/*
1249 * ACPI - drivers/ata/libata-acpi.c
1250 */
e1ddb4b6 1251#ifdef CONFIG_ATA_ACPI
c05e6ff0
TH		 1252static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1253{
1254 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
1255 return &ap->__acpi_init_gtm;
1256 return NULL;
1257}
0d02f0b2
TH		 1258int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
1259int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
7c77fa4d
TH		 1260unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev,
1261 const struct ata_acpi_gtm *gtm);
021ee9a6 1262int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm);
e1ddb4b6 1263#else
c05e6ff0
TH		 1264static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1265{
1266 return NULL;
1267}
7c77fa4d
TH		 1268
1269static inline int ata_acpi_stm(const struct ata_port *ap,
1270 struct ata_acpi_gtm *stm)
1271{
1272 return -ENOSYS;
1273}
1274
1275static inline int ata_acpi_gtm(const struct ata_port *ap,
1276 struct ata_acpi_gtm *stm)
1277{
1278 return -ENOSYS;
1279}
1280
1281static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
1282 const struct ata_acpi_gtm *gtm)
1283{
1284 return 0;
1285}
021ee9a6
TH		 1286
1287static inline int ata_acpi_cbl_80wire(struct ata_port *ap,
1288 const struct ata_acpi_gtm *gtm)
1289{
1290 return 0;
1291}
e1ddb4b6 1292#endif
1da177e4 1293
ece1d636 1294/*
624d5c51 1295 * EH - drivers/ata/libata-eh.c
ece1d636 1296 */
7b70fc03 1297extern void ata_port_schedule_eh(struct ata_port *ap);
81c757bc 1298extern void ata_port_wait_eh(struct ata_port *ap);
dbd82616 1299extern int ata_link_abort(struct ata_link *link);
7b70fc03 1300extern int ata_port_abort(struct ata_port *ap);
e3180499 1301extern int ata_port_freeze(struct ata_port *ap);
7d77b247 1302extern int sata_async_notification(struct ata_port *ap);
e3180499
TH		 1303
1304extern void ata_eh_freeze_port(struct ata_port *ap);
1305extern void ata_eh_thaw_port(struct ata_port *ap);
7b70fc03 1306
ece1d636
TH		 1307extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
1308extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
10acf3b0 1309extern void ata_eh_analyze_ncq_error(struct ata_link *link);
ece1d636 1310
f5914a46
TH		 1311extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
1312 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
1313 ata_postreset_fn_t postreset);
a1efdaba 1314extern void ata_std_error_handler(struct ata_port *ap);
e4a9c373
DW		 1315extern void ata_std_sched_eh(struct ata_port *ap);
1316extern void ata_std_end_eh(struct ata_port *ap);
8a745f1f 1317extern int ata_link_nr_enabled(struct ata_link *link);
022bdb07 1318
68d1d07b
TH		 1319/*
1320 * Base operations to inherit from and initializers for sht
1321 *
1322 * Operations
1323 *
1324 * base : Common to all libata drivers.
1325 * sata : SATA controllers w/ native interface.
1326 * pmp : SATA controllers w/ PMP support.
1327 * sff : SFF ATA controllers w/o BMDMA support.
1328 * bmdma : SFF ATA controllers w/ BMDMA support.
1329 *
1330 * sht initializers
1331 *
1332 * BASE : Common to all libata drivers. The user must set
1333 * sg_tablesize and dma_boundary.
1334 * PIO : SFF ATA controllers w/ only PIO support.
1335 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and
1336 * dma_boundary are set to BMDMA limits.
1337 * NCQ : SATA controllers supporting NCQ. The user must set
1338 * sg_tablesize, dma_boundary and can_queue.
1339 */
1340extern const struct ata_port_operations ata_base_port_ops;
1341extern const struct ata_port_operations sata_port_ops;
45fabbb7 1342extern struct device_attribute *ata_common_sdev_attrs[];
68d1d07b 1343
018d5ef2
AM		 1344/*
1345 * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated
1346 * by the edge drivers. Because the 'module' field of sht must be the
1347 * edge driver's module reference, otherwise the driver can be unloaded
1348 * even if the scsi_device is being accessed.
1349 */
68d1d07b
TH		 1350#define ATA_BASE_SHT(drv_name) \
1351 .module = THIS_MODULE, \
1352 .name = drv_name, \
1353 .ioctl = ata_scsi_ioctl, \
1354 .queuecommand = ata_scsi_queuecmd, \
1355 .can_queue = ATA_DEF_QUEUE, \
12cb5ce1 1356 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \
68d1d07b 1357 .this_id = ATA_SHT_THIS_ID, \
68d1d07b
TH		 1358 .emulated = ATA_SHT_EMULATED, \
1359 .use_clustering = ATA_SHT_USE_CLUSTERING, \
1360 .proc_name = drv_name, \
1361 .slave_configure = ata_scsi_slave_config, \
1362 .slave_destroy = ata_scsi_slave_destroy, \
b6a05c82 1363 .eh_timed_out = ata_scsi_timed_out, \
45fabbb7 1364 .bios_param = ata_std_bios_param, \
d8d9129e 1365 .unlock_native_capacity = ata_scsi_unlock_native_capacity, \
45fabbb7 1366 .sdev_attrs = ata_common_sdev_attrs
68d1d07b 1367
68d1d07b
TH		 1368#define ATA_NCQ_SHT(drv_name) \
1369 ATA_BASE_SHT(drv_name), \
1370 .change_queue_depth = ata_scsi_change_queue_depth
1371
071f44b1
TH		 1372/*
1373 * PMP helpers
1374 */
88fcd562 1375#ifdef CONFIG_SATA_PMP
071f44b1
TH		 1376static inline bool sata_pmp_supported(struct ata_port *ap)
1377{
1378 return ap->flags & ATA_FLAG_PMP;
1379}
1380
1381static inline bool sata_pmp_attached(struct ata_port *ap)
1382{
1383 return ap->nr_pmp_links != 0;
1384}
1385
b1c04e80 1386static inline bool ata_is_host_link(const struct ata_link *link)
071f44b1 1387{
b1c72916 1388 return link == &link->ap->link || link == link->ap->slave_link;
071f44b1 1389}
88fcd562
TH		 1390#else /* CONFIG_SATA_PMP */
1391static inline bool sata_pmp_supported(struct ata_port *ap)
1392{
1393 return false;
1394}
1395
1396static inline bool sata_pmp_attached(struct ata_port *ap)
1397{
1398 return false;
1399}
1400
b1c04e80 1401static inline bool ata_is_host_link(const struct ata_link *link)
88fcd562
TH		 1402{
1403 return 1;
1404}
1405#endif /* CONFIG_SATA_PMP */
071f44b1
TH		 1406
1407static inline int sata_srst_pmp(struct ata_link *link)
1408{
1409 if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
1410 return SATA_PMP_CTRL_PORT;
1411 return link->pmp;
1412}
1413
61440db6
TH		 1414/*
1415 * printk helpers
1416 */
b9075fa9 1417__printf(3, 4)
d7bead1b
JP		 1418void ata_port_printk(const struct ata_port *ap, const char *level,
1419 const char *fmt, ...);
b9075fa9 1420__printf(3, 4)
d7bead1b
JP		 1421void ata_link_printk(const struct ata_link *link, const char *level,
1422 const char *fmt, ...);
b9075fa9 1423__printf(3, 4)
d7bead1b
JP		 1424void ata_dev_printk(const struct ata_device *dev, const char *level,
1425 const char *fmt, ...);
a9a79dfe
JP		 1426
1427#define ata_port_err(ap, fmt, ...) \
1428 ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__)
1429#define ata_port_warn(ap, fmt, ...) \
1430 ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__)
1431#define ata_port_notice(ap, fmt, ...) \
1432 ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__)
1433#define ata_port_info(ap, fmt, ...) \
1434 ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__)
1435#define ata_port_dbg(ap, fmt, ...) \
1436 ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__)
1437
1438#define ata_link_err(link, fmt, ...) \
1439 ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__)
1440#define ata_link_warn(link, fmt, ...) \
1441 ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__)
1442#define ata_link_notice(link, fmt, ...) \
1443 ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__)
1444#define ata_link_info(link, fmt, ...) \
1445 ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__)
1446#define ata_link_dbg(link, fmt, ...) \
1447 ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__)
1448
1449#define ata_dev_err(dev, fmt, ...) \
1450 ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__)
1451#define ata_dev_warn(dev, fmt, ...) \
1452 ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__)
1453#define ata_dev_notice(dev, fmt, ...) \
1454 ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__)
1455#define ata_dev_info(dev, fmt, ...) \
1456 ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__)
1457#define ata_dev_dbg(dev, fmt, ...) \
1458 ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__)
1da177e4 1459
06296a1e
JP		 1460void ata_print_version(const struct device *dev, const char *version);
1461
f3e81b19
TH		 1462/*
1463 * ata_eh_info helpers
1464 */
b9075fa9
JP		 1465extern __printf(2, 3)
1466void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1467extern __printf(2, 3)
1468void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
b64bbc39 1469extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
f3e81b19 1470
c0b6c037
TH		 1471static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
1472{
b558eddd 1473 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
f8f1e1cc 1474 ehi->flags |= ATA_EHI_HOTPLUGGED;
b558eddd 1475 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;
c0b6c037
TH		 1476 ehi->err_mask |= AC_ERR_ATA_BUS;
1477}
1478
cbcdd875
TH		 1479/*
1480 * port description helpers
1481 */
b9075fa9
JP		 1482extern __printf(2, 3)
1483void ata_port_desc(struct ata_port *ap, const char *fmt, ...);
cbcdd875
TH		 1484#ifdef CONFIG_PCI
1485extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
1486 const char *name);
1487#endif
1488
1da177e4
LT		 1489static inline unsigned int ata_tag_valid(unsigned int tag)
1490{
1491 return (tag < ATA_MAX_QUEUE) ? 1 : 0;
1492}
1493
2ab7db1f
TH		 1494static inline unsigned int ata_tag_internal(unsigned int tag)
1495{
83c063dd 1496 return tag == ATA_TAG_INTERNAL;
2ab7db1f
TH		 1497}
1498
5806db22
TH		 1499/*
1500 * device helpers
1501 */
e1211e3f 1502static inline unsigned int ata_class_enabled(unsigned int class)
597afd21 1503{
e0a71752 1504 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
9162c657
HR		 1505 class == ATA_DEV_PMP || class == ATA_DEV_SEMB ||
1506 class == ATA_DEV_ZAC;
597afd21
TH		 1507}
1508
e1211e3f 1509static inline unsigned int ata_class_disabled(unsigned int class)
1da177e4 1510{
e0a71752 1511 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
3a92945b
HR		 1512 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP ||
1513 class == ATA_DEV_ZAC_UNSUP;
e1211e3f
TH		 1514}
1515
002c8054
TH		 1516static inline unsigned int ata_class_absent(unsigned int class)
1517{
1518 return !ata_class_enabled(class) && !ata_class_disabled(class);
1519}
1520
e1211e3f
TH		 1521static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
1522{
1523 return ata_class_enabled(dev->class);
1524}
1525
1526static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
1527{
1528 return ata_class_disabled(dev->class);
1da177e4
LT		 1529}
1530
002c8054
TH		 1531static inline unsigned int ata_dev_absent(const struct ata_device *dev)
1532{
1533 return ata_class_absent(dev->class);
1534}
1535
5806db22 1536/*
f58229f8 1537 * link helpers
5806db22 1538 */
f58229f8 1539static inline int ata_link_max_devices(const struct ata_link *link)
5806db22 1540{
8989805d 1541 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS)
5806db22
TH		 1542 return 2;
1543 return 1;
1544}
1545
da917d69
TH		 1546static inline int ata_link_active(struct ata_link *link)
1547{
1548 return ata_tag_valid(link->active_tag) || link->sactive;
1549}
1550
1eca4365
TH		 1551/*
1552 * Iterators
1553 *
1554 * ATA_LITER_* constants are used to select link iteration mode and
1555 * ATA_DITER_* device iteration mode.
1556 *
1557 * For a custom iteration directly using ata_{link|dev}_next(), if
1558 * @link or @dev, respectively, is NULL, the first element is
1559 * returned. @dev and @link can be any valid device or link and the
1560 * next element according to the iteration mode will be returned.
1561 * After the last element, NULL is returned.
1562 */
1563enum ata_link_iter_mode {
1564 ATA_LITER_EDGE, /* if present, PMP links only; otherwise,
1565 * host link. no slave link */
1566 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */
1567 ATA_LITER_PMP_FIRST, /* PMP links followed by host link,
1568 * slave link still comes after host link */
1569};
1570
1571enum ata_dev_iter_mode {
1572 ATA_DITER_ENABLED,
1573 ATA_DITER_ENABLED_REVERSE,
1574 ATA_DITER_ALL,
1575 ATA_DITER_ALL_REVERSE,
1576};
1577
1578extern struct ata_link *ata_link_next(struct ata_link *link,
1579 struct ata_port *ap,
1580 enum ata_link_iter_mode mode);
1581
1582extern struct ata_device *ata_dev_next(struct ata_device *dev,
1583 struct ata_link *link,
1584 enum ata_dev_iter_mode mode);
1585
1586/*
1587 * Shortcut notation for iterations
1588 *
1589 * ata_for_each_link() iterates over each link of @ap according to
1590 * @mode. @link points to the current link in the loop. @link is
1591 * NULL after loop termination. ata_for_each_dev() works the same way
1592 * except that it iterates over each device of @link.
1593 *
1594 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be
1595 * specified when using the following shorthand notations. Only the
1596 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be
1597 * specified. This not only increases brevity but also makes it
1598 * impossible to use ATA_LITER_* for device iteration or vice-versa.
1599 */
1600#define ata_for_each_link(link, ap, mode) \
1601 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1602 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1603
1604#define ata_for_each_dev(dev, link, mode) \
1605 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1606 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
5806db22 1607
6d1245bf
TH		 1608/**
1609 * ata_ncq_enabled - Test whether NCQ is enabled
1610 * @dev: ATA device to test for
1611 *
1612 * LOCKING:
1613 * spin_lock_irqsave(host lock)
1614 *
1615 * RETURNS:
1616 * 1 if NCQ is enabled for @dev, 0 otherwise.
1617 */
1618static inline int ata_ncq_enabled(struct ata_device *dev)
1619{
1620 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF |
1621 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
1622}
0baab86b 1623
87fb6c31
MC		 1624static inline bool ata_fpdma_dsm_supported(struct ata_device *dev)
1625{
1626 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1627 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] &
1628 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM);
1629}
1630
5c65d8bb
HR		 1631static inline bool ata_fpdma_read_log_supported(struct ata_device *dev)
1632{
1633 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1634 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET] &
1635 ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED);
1636}
1637
28a3fc22
HR		 1638static inline bool ata_fpdma_zac_mgmt_in_supported(struct ata_device *dev)
1639{
1640 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1641 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET] &
1642 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED);
1643}
1644
284b3b77
HR		 1645static inline bool ata_fpdma_zac_mgmt_out_supported(struct ata_device *dev)
1646{
1647 return (dev->ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET] &
1648 ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT);
1649}
1650
1da177e4
LT		 1651static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
1652{
1653 qc->tf.ctl |= ATA_NIEN;
1654}
1655
f69499f4
TH		 1656static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
1657 unsigned int tag)
1da177e4
LT		 1658{
1659 if (likely(ata_tag_valid(tag)))
1660 return &ap->qcmd[tag];
1661 return NULL;
1662}
1663
f69499f4
TH		 1664static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
1665 unsigned int tag)
1666{
1667 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
1668
1669 if (unlikely(!qc) || !ap->ops->error_handler)
1670 return qc;
1671
1672 if ((qc->flags & (ATA_QCFLAG_ACTIVE |
1673 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE)
1674 return qc;
1675
1676 return NULL;
1677}
1678
aacda375
TH		 1679static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc)
1680{
1681 return qc->nbytes - min(qc->extrabytes, qc->nbytes);
1682}
1683
3373efd8 1684static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
1da177e4
LT		 1685{
1686 memset(tf, 0, sizeof(*tf));
1687
5fe7454a 1688#ifdef CONFIG_ATA_SFF
9af5c9c9 1689 tf->ctl = dev->link->ap->ctl;
5fe7454a
TH		 1690#else
1691 tf->ctl = ATA_DEVCTL_OBS;
1692#endif
3373efd8 1693 if (dev->devno == 0)
1da177e4
LT		 1694 tf->device = ATA_DEVICE_OBS;
1695 else
1696 tf->device = ATA_DEVICE_OBS | ATA_DEV1;
1697}
1698
2c13b7ce
JG		 1699static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
1700{
501e0c50 1701 qc->dma_dir = DMA_NONE;
ff2aeb1e 1702 qc->sg = NULL;
2c13b7ce 1703 qc->flags = 0;
87260216
JA		 1704 qc->cursg = NULL;
1705 qc->cursg_ofs = 0;
aacda375 1706 qc->nbytes = qc->extrabytes = qc->curbytes = 0;
7a801184 1707 qc->n_elem = 0;
a22e2eb0 1708 qc->err_mask = 0;
5a5dbd18 1709 qc->sect_size = ATA_SECT_SIZE;
2c13b7ce 1710
3373efd8 1711 ata_tf_init(qc->dev, &qc->tf);
e61e0672
TH		 1712
1713 /* init result_tf such that it indicates normal completion */
1714 qc->result_tf.command = ATA_DRDY;
1715 qc->result_tf.feature = 0;
2c13b7ce
JG		 1716}
1717
057ace5e 1718static inline int ata_try_flush_cache(const struct ata_device *dev)
1da177e4
LT		 1719{
1720 return ata_id_wcache_enabled(dev->id) ||
1721 ata_id_has_flush(dev->id) ||
1722 ata_id_has_flush_ext(dev->id);
1723}
1724
a7dac447
JG		 1725static inline unsigned int ac_err_mask(u8 status)
1726{
3655d1d3 1727 if (status & (ATA_BUSY | ATA_DRQ))
11a56d24 1728 return AC_ERR_HSM;
a7dac447
JG		 1729 if (status & (ATA_ERR | ATA_DF))
1730 return AC_ERR_DEV;
1731 return 0;
1732}
1733
1734static inline unsigned int __ac_err_mask(u8 status)
1735{
1736 unsigned int mask = ac_err_mask(status);
1737 if (mask == 0)
1738 return AC_ERR_OTHER;
1739 return mask;
1740}
1741
35bb94b1
JG		 1742static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
1743{
4911487a 1744 return *(struct ata_port **)&host->hostdata[0];
35bb94b1
JG		 1745}
1746
78ab88f0
TH		 1747static inline int ata_check_ready(u8 status)
1748{
005b1f74
JG		 1749 if (!(status & ATA_BUSY))
1750 return 1;
78ab88f0
TH		 1751
1752 /* 0xff indicates either no device or device not ready */
1753 if (status == 0xff)
1754 return -ENODEV;
1755
005b1f74 1756 return 0;
78ab88f0
TH		 1757}
1758
341c2c95
TH		 1759static inline unsigned long ata_deadline(unsigned long from_jiffies,
1760 unsigned long timeout_msecs)
1761{
1762 return from_jiffies + msecs_to_jiffies(timeout_msecs);
1763}
1764
b15b3eba
AC		 1765/* Don't open code these in drivers as there are traps. Firstly the range may
1766 change in future hardware and specs, secondly 0xFF means 'no DMA' but is
1767 > UDMA_0. Dyma ddreigiau */
1768
1769static inline int ata_using_mwdma(struct ata_device *adev)
1770{
1771 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4)
1772 return 1;
1773 return 0;
1774}
1775
1776static inline int ata_using_udma(struct ata_device *adev)
1777{
1778 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7)
1779 return 1;
1780 return 0;
1781}
1782
1783static inline int ata_dma_enabled(struct ata_device *adev)
1784{
1785 return (adev->dma_mode == 0xFF ? 0 : 1);
1786}
48515f6c
TH		 1787
1788/**************************************************************************
1789 * PMP - drivers/ata/libata-pmp.c
1790 */
88fcd562
TH		 1791#ifdef CONFIG_SATA_PMP
1792
48515f6c
TH		 1793extern const struct ata_port_operations sata_pmp_port_ops;
1794
1795extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
1796extern void sata_pmp_error_handler(struct ata_port *ap);
1797
88fcd562
TH		 1798#else /* CONFIG_SATA_PMP */
1799
1800#define sata_pmp_port_ops sata_port_ops
1801#define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1802#define sata_pmp_error_handler ata_std_error_handler
1803
1804#endif /* CONFIG_SATA_PMP */
1805
48515f6c 1806
624d5c51
TH		 1807/**************************************************************************
1808 * SFF - drivers/ata/libata-sff.c
1809 */
127102ae
TH		 1810#ifdef CONFIG_ATA_SFF
1811
624d5c51 1812extern const struct ata_port_operations ata_sff_port_ops;
871af121 1813extern const struct ata_port_operations ata_bmdma32_port_ops;
624d5c51
TH		 1814
1815/* PIO only, sg_tablesize and dma_boundary limits can be removed */
1816#define ATA_PIO_SHT(drv_name) \
1817 ATA_BASE_SHT(drv_name), \
1818 .sg_tablesize = LIBATA_MAX_PRD, \
1819 .dma_boundary = ATA_DMA_BOUNDARY
1820
9363c382
TH		 1821extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
1822extern u8 ata_sff_check_status(struct ata_port *ap);
a57c1bad
AC		 1823extern void ata_sff_pause(struct ata_port *ap);
1824extern void ata_sff_dma_pause(struct ata_port *ap);
9363c382
TH		 1825extern int ata_sff_busy_sleep(struct ata_port *ap,
1826 unsigned long timeout_pat, unsigned long timeout);
705e76be 1827extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline);
9363c382
TH		 1828extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
1829extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
1830extern void ata_sff_exec_command(struct ata_port *ap,
1831 const struct ata_taskfile *tf);
989e0aac 1832extern unsigned int ata_sff_data_xfer(struct ata_queued_cmd *qc,
624d5c51 1833 unsigned char *buf, unsigned int buflen, int rw);
989e0aac 1834extern unsigned int ata_sff_data_xfer32(struct ata_queued_cmd *qc,
871af121 1835 unsigned char *buf, unsigned int buflen, int rw);
989e0aac 1836extern unsigned int ata_sff_data_xfer_noirq(struct ata_queued_cmd *qc,
624d5c51 1837 unsigned char *buf, unsigned int buflen, int rw);
e42a542b 1838extern void ata_sff_irq_on(struct ata_port *ap);
9363c382
TH		 1839extern void ata_sff_irq_clear(struct ata_port *ap);
1840extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
1841 u8 status, int in_wq);
64b97594
VK		 1842extern void ata_sff_queue_work(struct work_struct *work);
1843extern void ata_sff_queue_delayed_work(struct delayed_work *dwork,
1844 unsigned long delay);
ea3c6450 1845extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay);
9363c382 1846extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
22183bf5 1847extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
c3b28894 1848extern unsigned int ata_sff_port_intr(struct ata_port *ap,
9363c382
TH		 1849 struct ata_queued_cmd *qc);
1850extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
c96f1732 1851extern void ata_sff_lost_interrupt(struct ata_port *ap);
9363c382
TH		 1852extern void ata_sff_freeze(struct ata_port *ap);
1853extern void ata_sff_thaw(struct ata_port *ap);
1854extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
1855extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
1856 u8 *r_err);
705e76be
TH		 1857extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
1858 unsigned long deadline);
9363c382 1859extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
624d5c51 1860 unsigned long deadline);
9363c382
TH		 1861extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
1862 unsigned long deadline);
1863extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
3d47aa8e 1864extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
9363c382 1865extern void ata_sff_error_handler(struct ata_port *ap);
9363c382 1866extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
624d5c51 1867#ifdef CONFIG_PCI
9363c382
TH		 1868extern int ata_pci_sff_init_host(struct ata_host *host);
1869extern int ata_pci_sff_prepare_host(struct pci_dev *pdev,
624d5c51
TH		 1870 const struct ata_port_info * const * ppi,
1871 struct ata_host **r_host);
9363c382 1872extern int ata_pci_sff_activate_host(struct ata_host *host,
624d5c51
TH		 1873 irq_handler_t irq_handler,
1874 struct scsi_host_template *sht);
9363c382 1875extern int ata_pci_sff_init_one(struct pci_dev *pdev,
16ea0fc9
AC		 1876 const struct ata_port_info * const * ppi,
1877 struct scsi_host_template *sht, void *host_priv, int hflags);
624d5c51
TH		 1878#endif /* CONFIG_PCI */
1879
9a7780c9
TH		 1880#ifdef CONFIG_ATA_BMDMA
1881
1882extern const struct ata_port_operations ata_bmdma_port_ops;
1883
1884#define ATA_BMDMA_SHT(drv_name) \
1885 ATA_BASE_SHT(drv_name), \
1886 .sg_tablesize = LIBATA_MAX_PRD, \
1887 .dma_boundary = ATA_DMA_BOUNDARY
1888
f47451c4 1889extern void ata_bmdma_qc_prep(struct ata_queued_cmd *qc);
360ff783 1890extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc);
f47451c4 1891extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc);
c3b28894
TH		 1892extern unsigned int ata_bmdma_port_intr(struct ata_port *ap,
1893 struct ata_queued_cmd *qc);
1894extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance);
fe06e5f9
TH		 1895extern void ata_bmdma_error_handler(struct ata_port *ap);
1896extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
37f65b8b 1897extern void ata_bmdma_irq_clear(struct ata_port *ap);
9f2f7210
TH		 1898extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
1899extern void ata_bmdma_start(struct ata_queued_cmd *qc);
1900extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
1901extern u8 ata_bmdma_status(struct ata_port *ap);
c7087652
TH		 1902extern int ata_bmdma_port_start(struct ata_port *ap);
1903extern int ata_bmdma_port_start32(struct ata_port *ap);
9f2f7210
TH		 1904
1905#ifdef CONFIG_PCI
1906extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
c7087652 1907extern void ata_pci_bmdma_init(struct ata_host *host);
1c5afdf7
TH		 1908extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev,
1909 const struct ata_port_info * const * ppi,
1910 struct ata_host **r_host);
1911extern int ata_pci_bmdma_init_one(struct pci_dev *pdev,
1912 const struct ata_port_info * const * ppi,
1913 struct scsi_host_template *sht,
1914 void *host_priv, int hflags);
9f2f7210 1915#endif /* CONFIG_PCI */
9a7780c9 1916#endif /* CONFIG_ATA_BMDMA */
9f2f7210 1917
624d5c51 1918/**
9363c382 1919 * ata_sff_busy_wait - Wait for a port status register
624d5c51
TH		 1920 * @ap: Port to wait for.
1921 * @bits: bits that must be clear
1922 * @max: number of 10uS waits to perform
1923 *
1924 * Waits up to max*10 microseconds for the selected bits in the port's
1925 * status register to be cleared.
1926 * Returns final value of status register.
1927 *
1928 * LOCKING:
1929 * Inherited from caller.
1930 */
9363c382
TH		 1931static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits,
1932 unsigned int max)
624d5c51
TH		 1933{
1934 u8 status;
1935
1936 do {
1937 udelay(10);
5682ed33 1938 status = ap->ops->sff_check_status(ap);
624d5c51
TH		 1939 max--;
1940 } while (status != 0xff && (status & bits) && (max > 0));
1941
1942 return status;
1943}
1944
1945/**
1946 * ata_wait_idle - Wait for a port to be idle.
1947 * @ap: Port to wait for.
1948 *
1949 * Waits up to 10ms for port's BUSY and DRQ signals to clear.
1950 * Returns final value of status register.
1951 *
1952 * LOCKING:
1953 * Inherited from caller.
1954 */
1955static inline u8 ata_wait_idle(struct ata_port *ap)
1956{
9363c382 1957 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
624d5c51
TH		 1958
1959#ifdef ATA_DEBUG
1960 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
1961 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n",
1962 status);
1963#endif
1964
1965 return status;
1966}
127102ae 1967#endif /* CONFIG_ATA_SFF */
624d5c51 1968
1da177e4 1969#endif /* __LINUX_LIBATA_H__ */
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