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libata: Use integer return value for atapi_command_packet_set
[mirror_ubuntu-artful-kernel.git] / include / linux / libata.h
CommitLineData
1da177e4 1/*
af36d7f0
JG		 2 * Copyright 2003-2005 Red Hat, Inc. All rights reserved.
3 * Copyright 2003-2005 Jeff Garzik
4 *
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2, or (at your option)
9 * any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; see the file COPYING. If not, write to
18 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
19 *
20 *
21 * libata documentation is available via 'make {ps|pdf}docs',
22 * as Documentation/DocBook/libata.*
23 *
1da177e4
LT		 24 */
25
26#ifndef __LINUX_LIBATA_H__
27#define __LINUX_LIBATA_H__
28
29#include <linux/delay.h>
341c2c95 30#include <linux/jiffies.h>
1da177e4 31#include <linux/interrupt.h>
1c72d8d9 32#include <linux/dma-mapping.h>
87260216 33#include <linux/scatterlist.h>
f0d36efd 34#include <linux/io.h>
1da177e4
LT		 35#include <linux/ata.h>
36#include <linux/workqueue.h>
35bb94b1 37#include <scsi/scsi_host.h>
11ef697b 38#include <linux/acpi.h>
ceb0c642 39#include <linux/cdrom.h>
c0c362b6 40#include <linux/sched.h>
1da177e4 41
a6d967a4
JG		 42/*
43 * Define if arch has non-standard setup. This is a _PCI_ standard
44 * not a legacy or ISA standard.
45 */
46#ifdef CONFIG_ATA_NONSTANDARD
2ec7df04 47#include <asm/libata-portmap.h>
a6d967a4
JG		 48#else
49#include <asm-generic/libata-portmap.h>
50#endif
2ec7df04 51
1da177e4 52/*
bfd60579
RD		 53 * compile-time options: to be removed as soon as all the drivers are
54 * converted to the new debugging mechanism
1da177e4
LT		 55 */
56#undef ATA_DEBUG /* debugging output */
57#undef ATA_VERBOSE_DEBUG /* yet more debugging output */
58#undef ATA_IRQ_TRAP /* define to ack screaming irqs */
59#undef ATA_NDEBUG /* define to disable quick runtime checks */
1da177e4
LT		 60
61
62/* note: prints function name for you */
63#ifdef ATA_DEBUG
1f938d06 64#define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
1da177e4 65#ifdef ATA_VERBOSE_DEBUG
1f938d06 66#define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
1da177e4
LT		 67#else
68#define VPRINTK(fmt, args...)
69#endif /* ATA_VERBOSE_DEBUG */
70#else
71#define DPRINTK(fmt, args...)
72#define VPRINTK(fmt, args...)
73#endif /* ATA_DEBUG */
74
1f938d06 75#define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args)
2c13b7ce 76
06296a1e
JP		 77#define ata_print_version_once(dev, version) \
78({ \
79 static bool __print_once; \
80 \
81 if (!__print_once) { \
82 __print_once = true; \
83 ata_print_version(dev, version); \
84 } \
85})
86
bfd60579
RD		 87/* NEW: debug levels */
88#define HAVE_LIBATA_MSG 1
89
90enum {
91 ATA_MSG_DRV = 0x0001,
92 ATA_MSG_INFO = 0x0002,
93 ATA_MSG_PROBE = 0x0004,
94 ATA_MSG_WARN = 0x0008,
95 ATA_MSG_MALLOC = 0x0010,
96 ATA_MSG_CTL = 0x0020,
97 ATA_MSG_INTR = 0x0040,
98 ATA_MSG_ERR = 0x0080,
99};
100
101#define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV)
102#define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO)
103#define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE)
104#define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN)
105#define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
106#define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL)
107#define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR)
108#define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR)
109
110static inline u32 ata_msg_init(int dval, int default_msg_enable_bits)
111{
112 if (dval < 0 || dval >= (sizeof(u32) * 8))
113 return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */
114 if (!dval)
115 return 0;
116 return (1 << dval) - 1;
117}
118
1da177e4
LT		 119/* defines only for the constants which don't work well as enums */
120#define ATA_TAG_POISON 0xfafbfcfdU
121
1da177e4
LT		 122enum {
123 /* various global constants */
124 LIBATA_MAX_PRD = ATA_MAX_PRD / 2,
d26fc955 125 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */
1da177e4 126 ATA_DEF_QUEUE = 1,
2ab7db1f 127 /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */
a6e6ce8e 128 ATA_MAX_QUEUE = 32,
2ab7db1f 129 ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1,
341c2c95 130 ATA_SHORT_PAUSE = 16,
1da177e4 131
140b5e59
TH		 132 ATAPI_MAX_DRAIN = 16 << 10,
133
b558eddd
TH		 134 ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1,
135
1da177e4
LT		 136 ATA_SHT_EMULATED = 1,
137 ATA_SHT_CMD_PER_LUN = 1,
138 ATA_SHT_THIS_ID = -1,
cf482935 139 ATA_SHT_USE_CLUSTERING = 1,
1da177e4
LT		 140
141 /* struct ata_device stuff */
949b38af
TH		 142 ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */
143 ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */
029f5468 144 ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */
88e49034 145 ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */
6fc49adb 146 ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */
6746544c
TH		 147 ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */
148 ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */
7d77b247 149 ATA_DFLAG_AN = (1 << 7), /* AN configured */
91163006 150 ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */
2557164e 151 ATA_DFLAG_CFG_MASK = (1 << 12) - 1,
949b38af 152
2557164e
KCA		 153 ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */
154 ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */
054a5fba 155 ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */
00115e0f 156 ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */
45fabbb7 157 ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */
445d211b 158 ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */
f20ded38 159 ATA_DFLAG_INIT_MASK = (1 << 24) - 1,
1da177e4 160
f20ded38
TH		 161 ATA_DFLAG_DETACH = (1 << 24),
162 ATA_DFLAG_DETACHED = (1 << 25),
abdda733 163
b1354cbb 164 ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */
65fe1f0f 165 ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */
0d0cdb02 166 ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */
b1354cbb 167
1da177e4
LT		 168 ATA_DEV_UNKNOWN = 0, /* unknown device */
169 ATA_DEV_ATA = 1, /* ATA device */
170 ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */
171 ATA_DEV_ATAPI = 3, /* ATAPI device */
172 ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */
e0a71752
TH		 173 ATA_DEV_PMP = 5, /* SATA port multiplier */
174 ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */
175 ATA_DEV_SEMB = 7, /* SEMB */
176 ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */
177 ATA_DEV_NONE = 9, /* no device */
1da177e4 178
0c88758b 179 /* struct ata_link flags */
05944bdf 180 ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */
ae791c05
TH		 181 ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */
182 ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */
183 ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */
184 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB,
fd995f70 185 ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */
f9df58cb 186 ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */
18f7ba4c 187 ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */
6b7ae954 188 ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */
ca6d43b0 189 ATA_LFLAG_RST_ONCE = (1 << 9), /* limit recovery to one reset */
0c88758b 190
1da177e4 191 /* struct ata_port flags */
949b38af 192 ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */
1da177e4 193 /* (doesn't imply presence) */
949b38af 194 ATA_FLAG_SATA = (1 << 1),
949b38af
TH		 195 ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */
196 ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */
197 ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */
7395acb2
TH		 198 ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD
199 * doesn't handle PIO interrupts */
200 ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */
2a6e58d2
RW		 201 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */
202 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */
7395acb2 203 ATA_FLAG_DEBUGMSG = (1 << 13),
388539f3 204 ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */
b2a8bbe6 205 ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */
f834e49f 206 ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */
3cadbcc0 207 ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */
9f45cbd3 208 ATA_FLAG_AN = (1 << 18), /* controller supports AN */
e0a71752 209 ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */
18f7ba4c
KCA		 210 ATA_FLAG_EM = (1 << 21), /* driver supports enclosure
211 * management */
212 ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity
213 * led */
ae01b249 214 ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */
949b38af 215
b51e9e5d 216 /* bits 24:31 of ap->flags are reserved for LLD specific flags */
9ec957f2 217
e3cf95dd 218
b51e9e5d
TH		 219 /* struct ata_port pflags */
220 ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */
221 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */
222 ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */
223 ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */
224 ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */
b51e9e5d 225 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */
f4d6d004 226 ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */
afaa5c37 227 ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */
ece180d1
TH		 228 ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */
229 ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */
949b38af 230
b51e9e5d 231 ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */
500530f6 232 ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */
c05e6ff0 233 ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */
949b38af 234
e3cf95dd
AC		 235 ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */
236 ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */
237
949b38af
TH		 238 /* struct ata_queued_cmd flags */
239 ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */
001102d7 240 ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */
27197367 241 ATA_QCFLAG_IO = (1 << 3), /* standard IO command */
e61e0672 242 ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */
da917d69 243 ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */
e027bd36 244 ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */
03faab78 245 ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */
e61e0672 246
9ec957f2
TH		 247 ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */
248 ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */
249 ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */
1da177e4 250
4e5ec5db 251 /* host set flags */
cca3974e 252 ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */
ecef7253 253 ATA_HOST_STARTED = (1 << 1), /* Host started */
886ad09f 254 ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */
db63a4c8 255 ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */
9bec2e38 256
b8b275ef
TH		 257 /* bits 24:31 of host->flags are reserved for LLD specific flags */
258
1da177e4 259 /* various lengths of time */
341c2c95
TH		 260 ATA_TMOUT_BOOT = 30000, /* heuristic */
261 ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */
341c2c95 262 ATA_TMOUT_INTERNAL_QUICK = 5000,
45fabbb7 263 ATA_TMOUT_MAX_PARK = 30000,
1da177e4 264
b48d58f5
TH		 265 /*
266 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s
267 * is too much without parallel probing. Use 2s if parallel
268 * probing is available, 800ms otherwise.
88ff6eaf 269 */
b48d58f5
TH		 270 ATA_TMOUT_FF_WAIT_LONG = 2000,
271 ATA_TMOUT_FF_WAIT = 800,
88ff6eaf 272
705e76be
TH		 273 /* Spec mandates to wait for ">= 2ms" before checking status
274 * after reset. We wait 150ms, because that was the magic
275 * delay used for ATAPI devices in Hale Landis's ATADRVR, for
276 * the period of time between when the ATA command register is
277 * written, and then status is checked. Because waiting for
278 * "a while" before checking status is fine, post SRST, we
279 * perform this magic delay here as well.
280 *
281 * Old drivers/ide uses the 2mS rule and then waits for ready.
282 */
341c2c95 283 ATA_WAIT_AFTER_RESET = 150,
705e76be 284
9dadd45b
TH		 285 /* If PMP is supported, we have to do follow-up SRST. As some
286 * PMPs don't send D2H Reg FIS after hardreset, LLDs are
287 * advised to wait only for the following duration before
288 * doing SRST.
289 */
e7d3ef13 290 ATA_TMOUT_PMP_SRST_WAIT = 5000,
9dadd45b 291
1da177e4
LT		 292 /* ATA bus states */
293 BUS_UNKNOWN = 0,
294 BUS_DMA = 1,
295 BUS_IDLE = 2,
296 BUS_NOINTR = 3,
297 BUS_NODATA = 4,
298 BUS_TIMER = 5,
299 BUS_PIO = 6,
300 BUS_EDD = 7,
301 BUS_IDENTIFY = 8,
302 BUS_PACKET = 9,
303
304 /* SATA port states */
305 PORT_UNKNOWN = 0,
306 PORT_ENABLED = 1,
307 PORT_DISABLED = 2,
308
309 /* encoding various smaller bitmaps into a single
7dc951ae 310 * unsigned long bitmap
1da177e4 311 */
70cd071e
TH		 312 ATA_NR_PIO_MODES = 7,
313 ATA_NR_MWDMA_MODES = 5,
314 ATA_NR_UDMA_MODES = 8,
1da7b0d0
TH		 315
316 ATA_SHIFT_PIO = 0,
70cd071e
TH		 317 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES,
318 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES,
319
cedc9a47
JG		 320 /* size of buffer to pad xfers ending on unaligned boundaries */
321 ATA_DMA_PAD_SZ = 4,
949b38af 322
0c247c55
TH		 323 /* ering size */
324 ATA_ERING_SIZE = 32,
325
31cc23b3
TH		 326 /* return values for ->qc_defer */
327 ATA_DEFER_LINK = 1,
328 ATA_DEFER_PORT = 2,
329
f3e81b19
TH		 330 /* desc_len for ata_eh_info and context */
331 ATA_EH_DESC_LEN = 80,
332
9be1e979
TH		 333 /* reset / recovery action types */
334 ATA_EH_REVALIDATE = (1 << 0),
cf480626
TH		 335 ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */
336 ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */
337 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
f9df58cb 338 ATA_EH_ENABLE_LINK = (1 << 3),
45fabbb7 339 ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */
9be1e979 340
45fabbb7 341 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK,
b5b3fa38 342 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET |
6b7ae954 343 ATA_EH_ENABLE_LINK,
9be1e979 344
f3e81b19 345 /* ata_eh_info->flags */
abdda733 346 ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */
1cdaf534
TH		 347 ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */
348 ATA_EHI_QUIET = (1 << 3), /* be quiet */
e2f3d75f 349 ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */
abdda733 350
0d64a233
TH		 351 ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */
352 ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */
353 ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */
354 ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */
89692c03 355 ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */
f3e81b19 356
0d64a233 357 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
13abf50d 358
848e4c68
TH		 359 /* mask of flags to transfer *to* the slave link */
360 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET,
361
a1e10f7e
TH		 362 /* max tries if error condition is still set after ->error_handler */
363 ATA_EH_MAX_TRIES = 5,
ad9e2762 364
5040ab67
TH		 365 /* sometimes resuming a link requires several retries */
366 ATA_LINK_RESUME_TRIES = 5,
367
14d2bac1
TH		 368 /* how hard are we gonna try to probe/recover devices */
369 ATA_PROBE_MAX_TRIES = 3,
022bdb07 370 ATA_EH_DEV_TRIES = 3,
e0a71752
TH		 371 ATA_EH_PMP_TRIES = 5,
372 ATA_EH_PMP_LINK_TRIES = 3,
373
bf1bff6f 374 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */
f5914a46 375
87fbc5a0
TH		 376 /* This should match the actual table size of
377 * ata_eh_cmd_timeout_table in libata-eh.c.
378 */
6013efd8 379 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6,
87fbc5a0 380
93590859 381 /* Horkage types. May be set by libata or controller on drives
25985edc 382 (some horkage may be drive/controller pair dependent */
93590859
AC		 383
384 ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */
6919a0a6
AC		 385 ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */
386 ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */
18d6e9d5 387 ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */
16c55b03 388 ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */
50af2fa1 389 ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */
93328e11 390 ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */
6bbfd53d 391 ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */
2d3b8eea 392 ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */
9ce8e307 393 ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */
6a87e42e
TH		 394 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands
395 not multiple of 16 bytes */
877d0310 396 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */
9062712f 397 ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */
d0cb43b3 398 ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */
388539f3 399 ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */
43c9c591 400 ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */
b3a70601 401
2dcb407e 402 /* DMA mask for user DMA control: User visible values; DO NOT
b3a70601
AC		 403 renumber */
404 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */
405 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */
406 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */
ceb0c642
TH		 407
408 /* ATAPI command types */
409 ATAPI_READ = 0, /* READs */
410 ATAPI_WRITE = 1, /* WRITEs */
411 ATAPI_READ_CD = 2, /* READ CD [MSF] */
e52dcc48
TH		 412 ATAPI_PASS_THRU = 3, /* SAT pass-thru */
413 ATAPI_MISC = 4, /* the rest */
624d5c51
TH		 414
415 /* Timing constants */
416 ATA_TIMING_SETUP = (1 << 0),
417 ATA_TIMING_ACT8B = (1 << 1),
418 ATA_TIMING_REC8B = (1 << 2),
419 ATA_TIMING_CYC8B = (1 << 3),
420 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
421 ATA_TIMING_CYC8B,
422 ATA_TIMING_ACTIVE = (1 << 4),
423 ATA_TIMING_RECOVER = (1 << 5),
3ada9c12
DD		 424 ATA_TIMING_DMACK_HOLD = (1 << 6),
425 ATA_TIMING_CYCLE = (1 << 7),
426 ATA_TIMING_UDMA = (1 << 8),
624d5c51
TH		 427 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
428 ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
429 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
3ada9c12
DD		 430 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE |
431 ATA_TIMING_UDMA,
f1bce7f8
TH		 432
433 /* ACPI constants */
434 ATA_ACPI_FILTER_SETXFER = 1 << 0,
435 ATA_ACPI_FILTER_LOCK = 1 << 1,
436 ATA_ACPI_FILTER_DIPM = 1 << 2,
fa5b561c
TH		 437 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */
438 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */
f1bce7f8
TH		 439
440 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER |
441 ATA_ACPI_FILTER_LOCK |
442 ATA_ACPI_FILTER_DIPM,
1da177e4
LT		 443};
444
7dc951ae
TH		 445enum ata_xfer_mask {
446 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1)
447 << ATA_SHIFT_PIO,
448 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1)
449 << ATA_SHIFT_MWDMA,
450 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1)
451 << ATA_SHIFT_UDMA,
452};
453
14be71f4 454enum hsm_task_states {
c56b14d2 455 HSM_ST_IDLE, /* no command on going */
71527647
AL		 456 HSM_ST_FIRST, /* (waiting the device to)
457 write CDB or first data block */
c56b14d2
AL		 458 HSM_ST, /* (waiting the device to) transfer data */
459 HSM_ST_LAST, /* (waiting the device to) complete command */
c56b14d2 460 HSM_ST_ERR, /* error */
1da177e4
LT		 461};
462
a7dac447 463enum ata_completion_errors {
11a56d24
TH		 464 AC_ERR_DEV = (1 << 0), /* device reported error */
465 AC_ERR_HSM = (1 << 1), /* host state machine violation */
466 AC_ERR_TIMEOUT = (1 << 2), /* timeout */
467 AC_ERR_MEDIA = (1 << 3), /* media error */
468 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */
469 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */
470 AC_ERR_SYSTEM = (1 << 6), /* system error */
471 AC_ERR_INVALID = (1 << 7), /* invalid argument */
472 AC_ERR_OTHER = (1 << 8), /* unknown */
55a8e2c8 473 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */
5335b729 474 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */
a7dac447
JG		 475};
476
c93b263e
TH		 477/*
478 * Link power management policy: If you alter this, you also need to
479 * alter libata-scsi.c (for the ascii descriptions)
480 */
481enum ata_lpm_policy {
482 ATA_LPM_UNKNOWN,
483 ATA_LPM_MAX_POWER,
484 ATA_LPM_MED_POWER,
485 ATA_LPM_MIN_POWER,
486};
487
6b7ae954
TH		 488enum ata_lpm_hints {
489 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */
490 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */
491};
492
1da177e4
LT		 493/* forward declarations */
494struct scsi_device;
495struct ata_port_operations;
496struct ata_port;
cc0680a5 497struct ata_link;
1da177e4
LT		 498struct ata_queued_cmd;
499
500/* typedefs */
77853bf2 501typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
cc0680a5
TH		 502typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
503typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
d4b2bab4 504 unsigned long deadline);
cc0680a5 505typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
1da177e4 506
ee959b00 507extern struct device_attribute dev_attr_link_power_management_policy;
45fabbb7 508extern struct device_attribute dev_attr_unload_heads;
18f7ba4c
KCA		 509extern struct device_attribute dev_attr_em_message_type;
510extern struct device_attribute dev_attr_em_message;
511extern struct device_attribute dev_attr_sw_activity;
512
513enum sw_activity {
514 OFF,
515 BLINK_ON,
516 BLINK_OFF,
517};
ca77329f 518
127102ae 519#ifdef CONFIG_ATA_SFF
1da177e4 520struct ata_ioports {
0d5ff566
TH		 521 void __iomem *cmd_addr;
522 void __iomem *data_addr;
523 void __iomem *error_addr;
524 void __iomem *feature_addr;
525 void __iomem *nsect_addr;
526 void __iomem *lbal_addr;
527 void __iomem *lbam_addr;
528 void __iomem *lbah_addr;
529 void __iomem *device_addr;
530 void __iomem *status_addr;
531 void __iomem *command_addr;
532 void __iomem *altstatus_addr;
533 void __iomem *ctl_addr;
9a7780c9 534#ifdef CONFIG_ATA_BMDMA
0d5ff566 535 void __iomem *bmdma_addr;
9a7780c9 536#endif /* CONFIG_ATA_BMDMA */
0d5ff566 537 void __iomem *scr_addr;
1da177e4 538};
127102ae 539#endif /* CONFIG_ATA_SFF */
1da177e4 540
cca3974e 541struct ata_host {
1da177e4
LT		 542 spinlock_t lock;
543 struct device *dev;
0d5ff566 544 void __iomem * const *iomap;
1da177e4
LT		 545 unsigned int n_ports;
546 void *private_data;
029cfd6b 547 struct ata_port_operations *ops;
5444a6f4 548 unsigned long flags;
c0c362b6
TH		 549
550 struct mutex eh_mutex;
551 struct task_struct *eh_owner;
552
032af1ce 553 struct ata_port *simplex_claimed; /* channel owning the DMA */
f0eb62b8 554 struct ata_port *ports[0];
1da177e4
LT		 555};
556
557struct ata_queued_cmd {
558 struct ata_port *ap;
559 struct ata_device *dev;
560
561 struct scsi_cmnd *scsicmd;
562 void (*scsidone)(struct scsi_cmnd *);
563
564 struct ata_taskfile tf;
565 u8 cdb[ATAPI_CDB_LEN];
566
567 unsigned long flags; /* ATA_QCFLAG_xxx */
568 unsigned int tag;
569 unsigned int n_elem;
5825627c 570 unsigned int orig_n_elem;
1da177e4
LT		 571
572 int dma_dir;
573
5a5dbd18 574 unsigned int sect_size;
cedc9a47 575
1da177e4 576 unsigned int nbytes;
aacda375 577 unsigned int extrabytes;
1da177e4
LT		 578 unsigned int curbytes;
579
1da177e4 580 struct scatterlist sgent;
1da177e4 581
ff2aeb1e 582 struct scatterlist *sg;
1da177e4 583
b34e9042
RK		 584 struct scatterlist *cursg;
585 unsigned int cursg_ofs;
586
a22e2eb0 587 unsigned int err_mask;
e61e0672 588 struct ata_taskfile result_tf;
1da177e4
LT		 589 ata_qc_cb_t complete_fn;
590
1da177e4 591 void *private_data;
1c50dc83 592 void *lldd_task;
1da177e4
LT		 593};
594
cca3974e 595struct ata_port_stats {
1da177e4
LT		 596 unsigned long unhandled_irq;
597 unsigned long idle_irq;
598 unsigned long rw_reqbuf;
599};
600
0c247c55 601struct ata_ering_entry {
3884f7b0 602 unsigned int eflags;
0c247c55
TH		 603 unsigned int err_mask;
604 u64 timestamp;
605};
606
607struct ata_ering {
608 int cursor;
609 struct ata_ering_entry ring[ATA_ERING_SIZE];
610};
611
1da177e4 612struct ata_device {
9af5c9c9 613 struct ata_link *link;
72fa4b74 614 unsigned int devno; /* 0 or 1 */
75683fe7 615 unsigned int horkage; /* List of broken features */
6866e7bc 616 unsigned long flags; /* ATA_DFLAG_xxx */
3edebac4 617 struct scsi_device *sdev; /* attached SCSI device */
95514fd8 618 void *private_data;
fafbae87 619#ifdef CONFIG_ATA_ACPI
398e0782 620 union acpi_object *gtf_cache;
110f66d2 621 unsigned int gtf_filter;
afe75951
AL		 622#endif
623#ifdef CONFIG_SATA_ZPODD
624 void *zpodd;
fafbae87 625#endif
d9027470 626 struct device tdev;
99cf610a 627 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */
72fa4b74 628 u64 n_sectors; /* size of device, if ATA */
5920dadf 629 u64 n_native_sectors; /* native size, if ATA */
1da177e4 630 unsigned int class; /* ATA_DEV_xxx */
45fabbb7 631 unsigned long unpark_deadline;
e0a71752 632
1da177e4
LT		 633 u8 pio_mode;
634 u8 dma_mode;
635 u8 xfer_mode;
636 unsigned int xfer_shift; /* ATA_SHIFT_xxx */
637
8cbd6df1
AL		 638 unsigned int multi_count; /* sectors count for
639 READ/WRITE MULTIPLE */
b00eec1d 640 unsigned int max_sectors; /* per-device max sectors */
6e7846e9 641 unsigned int cdb_len;
8bf62ece 642
acf356b1 643 /* per-dev xfer mask */
7dc951ae
TH		 644 unsigned long pio_mask;
645 unsigned long mwdma_mask;
646 unsigned long udma_mask;
acf356b1 647
8bf62ece
AL		 648 /* for CHS addressing */
649 u16 cylinders; /* Number of cylinders */
650 u16 heads; /* Number of heads */
651 u16 sectors; /* Number of sectors per track */
0c247c55 652
f7e98930
JG		 653 union {
654 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
655 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
656 };
99cf610a 657
803739d2
SH		 658 /* DEVSLP Timing Variables from Identify Device Data Log */
659 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE];
65fe1f0f 660
99cf610a
TH		 661 /* error history */
662 int spdn_cnt;
663 /* ering is CLEAR_END, read comment above CLEAR_END */
664 struct ata_ering ering;
1da177e4
LT		 665};
666
99cf610a
TH		 667/* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are
668 * cleared to zero on ata_dev_init().
72fa4b74 669 */
99cf610a
TH		 670#define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
671#define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
72fa4b74 672
f3e81b19
TH		 673struct ata_eh_info {
674 struct ata_device *dev; /* offending device */
675 u32 serror; /* SError from LLDD */
676 unsigned int err_mask; /* port-wide err_mask */
677 unsigned int action; /* ATA_EH_* action mask */
47005f25 678 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */
f3e81b19 679 unsigned int flags; /* ATA_EHI_* flags */
abdda733 680
abdda733
TH		 681 unsigned int probe_mask;
682
f3e81b19
TH		 683 char desc[ATA_EH_DESC_LEN];
684 int desc_len;
685};
686
687struct ata_eh_context {
688 struct ata_eh_info i;
689 int tries[ATA_MAX_DEVICES];
87fbc5a0
TH		 690 int cmd_timeout_idx[ATA_MAX_DEVICES]
691 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE];
abdda733
TH		 692 unsigned int classes[ATA_MAX_DEVICES];
693 unsigned int did_probe_mask;
45fabbb7 694 unsigned int unloaded_mask;
00115e0f
TH		 695 unsigned int saved_ncq_enabled;
696 u8 saved_xfer_mode[ATA_MAX_DEVICES];
0a2c0f56
TH		 697 /* timestamp for the last reset attempt or success */
698 unsigned long last_reset;
f3e81b19
TH		 699};
700
64578a3d
TH		 701struct ata_acpi_drive
702{
703 u32 pio;
704 u32 dma;
705} __packed;
706
707struct ata_acpi_gtm {
708 struct ata_acpi_drive drive[2];
709 u32 flags;
710} __packed;
711
9af5c9c9
TH		 712struct ata_link {
713 struct ata_port *ap;
8989805d 714 int pmp; /* port multiplier port # */
9af5c9c9 715
d9027470 716 struct device tdev;
9af5c9c9
TH		 717 unsigned int active_tag; /* active tag on this link */
718 u32 sactive; /* active NCQ commands */
719
0c88758b
TH		 720 unsigned int flags; /* ATA_LFLAG_xxx */
721
d127ea7b 722 u32 saved_scontrol; /* SControl on probe */
9af5c9c9
TH		 723 unsigned int hw_sata_spd_limit;
724 unsigned int sata_spd_limit;
725 unsigned int sata_spd; /* current SATA PHY speed */
6b7ae954 726 enum ata_lpm_policy lpm_policy;
9af5c9c9
TH		 727
728 /* record runtime error info, protected by host_set lock */
729 struct ata_eh_info eh_info;
730 /* EH context */
731 struct ata_eh_context eh_context;
732
733 struct ata_device device[ATA_MAX_DEVICES];
734};
d9027470
GG		 735#define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
736#define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
9af5c9c9 737
1da177e4 738struct ata_port {
cca3974e 739 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */
029cfd6b 740 struct ata_port_operations *ops;
ba6a1308 741 spinlock_t *lock;
e3cf95dd
AC		 742 /* Flags owned by the EH context. Only EH should touch these once the
743 port is active */
1da177e4 744 unsigned long flags; /* ATA_FLAG_xxx */
e3cf95dd 745 /* Flags that change dynamically, protected by ap->lock */
b51e9e5d 746 unsigned int pflags; /* ATA_PFLAG_xxx */
44877b4e
TH		 747 unsigned int print_id; /* user visible unique port ID */
748 unsigned int port_no; /* 0 based port no. inside the host */
1da177e4 749
127102ae 750#ifdef CONFIG_ATA_SFF
1da177e4 751 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */
1da177e4
LT		 752 u8 ctl; /* cache of ATA control register */
753 u8 last_ctl; /* Cache last written value */
ea3c6450 754 struct ata_link* sff_pio_task_link; /* link currently used */
c429137a 755 struct delayed_work sff_pio_task;
9a7780c9 756#ifdef CONFIG_ATA_BMDMA
f60d7011
TH		 757 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */
758 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */
9a7780c9 759#endif /* CONFIG_ATA_BMDMA */
5fe7454a
TH		 760#endif /* CONFIG_ATA_SFF */
761
1da177e4
LT		 762 unsigned int pio_mask;
763 unsigned int mwdma_mask;
764 unsigned int udma_mask;
765 unsigned int cbl; /* cable type; ATA_CBL_xxx */
1da177e4
LT		 766
767 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE];
8a8bc223 768 unsigned long qc_allocated;
dedaf2b0 769 unsigned int qc_active;
da917d69 770 int nr_active_links; /* #links with active qcs */
dedaf2b0 771
b1c72916
TH		 772 struct ata_link link; /* host default link */
773 struct ata_link *slave_link; /* see ata_slave_link_init() */
1da177e4 774
8989805d
TH		 775 int nr_pmp_links; /* nr of available PMP links */
776 struct ata_link *pmp_link; /* array of PMP links */
da917d69 777 struct ata_link *excl_link; /* for PMP qc exclusion */
8989805d 778
cca3974e
JG		 779 struct ata_port_stats stats;
780 struct ata_host *host;
2f1f610b 781 struct device *dev;
d9027470 782 struct device tdev;
1da177e4 783
ad72cf98 784 struct mutex scsi_scan_mutex;
52bad64d 785 struct delayed_work hotplug_task;
3b01b8af 786 struct work_struct scsi_rescan_task;
86e45b6b 787
14be71f4 788 unsigned int hsm_task_state;
1da177e4 789
bfd60579 790 u32 msg_enable;
a72ec4ce 791 struct list_head eh_done_q;
c6cf9e99 792 wait_queue_head_t eh_wait_q;
a1e10f7e 793 int eh_tries;
45fabbb7 794 struct completion park_req_pending;
bfd60579 795
500530f6
TH		 796 pm_message_t pm_mesg;
797 int *pm_result;
6b7ae954 798 enum ata_lpm_policy target_lpm_policy;
500530f6 799
5ddf24c5
TH		 800 struct timer_list fastdrain_timer;
801 unsigned long fastdrain_cnt;
802
18f7ba4c 803 int em_message_type;
1da177e4 804 void *private_data;
fe635c7e 805
fafbae87 806#ifdef CONFIG_ATA_ACPI
c05e6ff0 807 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */
fafbae87 808#endif
84bda12a
TH		 809 /* owned by EH */
810 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
1da177e4
LT		 811};
812
029cfd6b
TH		 813/* The following initializer overrides a method to NULL whether one of
814 * its parent has the method defined or not. This is equivalent to
815 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant
816 * expression and thus can't be used as an initializer.
817 */
818#define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
819
1da177e4 820struct ata_port_operations {
c1bc899f
TH		 821 /*
822 * Command execution
823 */
824 int (*qc_defer)(struct ata_queued_cmd *qc);
825 int (*check_atapi_dma)(struct ata_queued_cmd *qc);
826 void (*qc_prep)(struct ata_queued_cmd *qc);
827 unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
22183bf5 828 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc);
1da177e4 829
c1bc899f
TH		 830 /*
831 * Configuration and exception handling
832 */
833 int (*cable_detect)(struct ata_port *ap);
834 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask);
835 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
836 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
837 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
963e4975 838 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id);
1da177e4 839
c1bc899f 840 void (*dev_config)(struct ata_device *dev);
1da177e4 841
c1bc899f
TH		 842 void (*freeze)(struct ata_port *ap);
843 void (*thaw)(struct ata_port *ap);
a1efdaba
TH		 844 ata_prereset_fn_t prereset;
845 ata_reset_fn_t softreset;
846 ata_reset_fn_t hardreset;
847 ata_postreset_fn_t postreset;
848 ata_prereset_fn_t pmp_prereset;
849 ata_reset_fn_t pmp_softreset;
850 ata_reset_fn_t pmp_hardreset;
851 ata_postreset_fn_t pmp_postreset;
c1bc899f 852 void (*error_handler)(struct ata_port *ap);
c96f1732 853 void (*lost_interrupt)(struct ata_port *ap);
c1bc899f 854 void (*post_internal_cmd)(struct ata_queued_cmd *qc);
e4a9c373
DW		 855 void (*sched_eh)(struct ata_port *ap);
856 void (*end_eh)(struct ata_port *ap);
c1bc899f
TH		 857
858 /*
859 * Optional features
860 */
82ef04fb
TH		 861 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val);
862 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val);
c1bc899f
TH		 863 void (*pmp_attach)(struct ata_port *ap);
864 void (*pmp_detach)(struct ata_port *ap);
6b7ae954
TH		 865 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy,
866 unsigned hints);
c1bc899f
TH		 867
868 /*
869 * Start, stop, suspend and resume
870 */
871 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg);
872 int (*port_resume)(struct ata_port *ap);
873 int (*port_start)(struct ata_port *ap);
874 void (*port_stop)(struct ata_port *ap);
875 void (*host_stop)(struct ata_host *host);
876
127102ae 877#ifdef CONFIG_ATA_SFF
c1bc899f
TH		 878 /*
879 * SFF / taskfile oriented ops
880 */
5682ed33 881 void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
41dec29b 882 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl);
5682ed33
TH		 883 u8 (*sff_check_status)(struct ata_port *ap);
884 u8 (*sff_check_altstatus)(struct ata_port *ap);
885 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
886 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
887 void (*sff_exec_command)(struct ata_port *ap,
888 const struct ata_taskfile *tf);
889 unsigned int (*sff_data_xfer)(struct ata_device *dev,
890 unsigned char *buf, unsigned int buflen, int rw);
e42a542b 891 void (*sff_irq_on)(struct ata_port *);
27943620 892 bool (*sff_irq_check)(struct ata_port *);
5682ed33 893 void (*sff_irq_clear)(struct ata_port *);
8244cd05 894 void (*sff_drain_fifo)(struct ata_queued_cmd *qc);
5682ed33 895
9a7780c9 896#ifdef CONFIG_ATA_BMDMA
c1bc899f
TH		 897 void (*bmdma_setup)(struct ata_queued_cmd *qc);
898 void (*bmdma_start)(struct ata_queued_cmd *qc);
899 void (*bmdma_stop)(struct ata_queued_cmd *qc);
900 u8 (*bmdma_status)(struct ata_port *ap);
9a7780c9 901#endif /* CONFIG_ATA_BMDMA */
127102ae 902#endif /* CONFIG_ATA_SFF */
c1bc899f 903
18f7ba4c
KCA		 904 ssize_t (*em_show)(struct ata_port *ap, char *buf);
905 ssize_t (*em_store)(struct ata_port *ap, const char *message,
906 size_t size);
907 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf);
908 ssize_t (*sw_activity_store)(struct ata_device *dev,
909 enum sw_activity val);
c1bc899f
TH		 910 /*
911 * Obsolete
9ec957f2 912 */
c1bc899f
TH		 913 void (*phy_reset)(struct ata_port *ap);
914 void (*eng_timeout)(struct ata_port *ap);
029cfd6b
TH		 915
916 /*
917 * ->inherits must be the last field and all the preceding
918 * fields must be pointers.
919 */
920 const struct ata_port_operations *inherits;
1da177e4
LT		 921};
922
923struct ata_port_info {
cca3974e 924 unsigned long flags;
0c88758b 925 unsigned long link_flags;
1da177e4
LT		 926 unsigned long pio_mask;
927 unsigned long mwdma_mask;
928 unsigned long udma_mask;
029cfd6b 929 struct ata_port_operations *port_ops;
e99f8b5e 930 void *private_data;
1da177e4
LT		 931};
932
452503f9
AC		 933struct ata_timing {
934 unsigned short mode; /* ATA mode */
935 unsigned short setup; /* t1 */
936 unsigned short act8b; /* t2 for 8-bit I/O */
937 unsigned short rec8b; /* t2i for 8-bit I/O */
938 unsigned short cyc8b; /* t0 for 8-bit I/O */
939 unsigned short active; /* t2 or tD */
940 unsigned short recover; /* t2i or tK */
3ada9c12 941 unsigned short dmack_hold; /* tj */
452503f9
AC		 942 unsigned short cycle; /* t0 */
943 unsigned short udma; /* t2CYCTYP/2 */
944};
945
624d5c51
TH		 946/*
947 * Core layer - drivers/ata/libata-core.c
948 */
e9c83914
TH		 949extern const unsigned long sata_deb_timing_normal[];
950extern const unsigned long sata_deb_timing_hotplug[];
951extern const unsigned long sata_deb_timing_long[];
952
029cfd6b 953extern struct ata_port_operations ata_dummy_port_ops;
21b0ad4f 954extern const struct ata_port_info ata_dummy_port_info;
dd5b06c4 955
e9c83914
TH		 956static inline const unsigned long *
957sata_ehc_deb_timing(struct ata_eh_context *ehc)
958{
959 if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
960 return sata_deb_timing_hotplug;
961 else
962 return sata_deb_timing_normal;
963}
d7bb4cc7 964
dd5b06c4
TH		 965static inline int ata_port_is_dummy(struct ata_port *ap)
966{
967 return ap->ops == &ata_dummy_port_ops;
968}
969
936fd732 970extern int sata_set_spd(struct ata_link *link);
0aa1113d 971extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
aa2731ad
TH		 972extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
973 int (*check_ready)(struct ata_link *link));
936fd732
TH		 974extern int sata_link_debounce(struct ata_link *link,
975 const unsigned long *params, unsigned long deadline);
976extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
977 unsigned long deadline);
1152b261
TH		 978extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
979 bool spm_wakeup);
cc0680a5 980extern int sata_link_hardreset(struct ata_link *link,
9dadd45b
TH		 981 const unsigned long *timing, unsigned long deadline,
982 bool *online, int (*check_ready)(struct ata_link *));
57c9efdf
TH		 983extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
984 unsigned long deadline);
203c75b8 985extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
2855568b 986
f3187195 987extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
f5cda257
TH		 988extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
989 const struct ata_port_info * const * ppi, int n_ports);
b1c72916 990extern int ata_slave_link_init(struct ata_port *ap);
ecef7253 991extern int ata_host_start(struct ata_host *host);
f3187195
TH		 992extern int ata_host_register(struct ata_host *host,
993 struct scsi_host_template *sht);
f5cda257
TH		 994extern int ata_host_activate(struct ata_host *host, int irq,
995 irq_handler_t irq_handler, unsigned long irq_flags,
996 struct scsi_host_template *sht);
0529c159 997extern void ata_host_detach(struct ata_host *host);
8d8e7d13 998extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *);
193515d5 999extern int ata_scsi_detect(struct scsi_host_template *sht);
1da177e4 1000extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
f281233d 1001extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd);
94be9a58
JG		 1002extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev,
1003 int cmd, void __user *arg);
80289167 1004extern void ata_sas_port_destroy(struct ata_port *);
cca3974e 1005extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
80289167 1006 struct ata_port_info *, struct Scsi_Host *);
b2024459
DW		 1007extern void ata_sas_async_probe(struct ata_port *ap);
1008extern int ata_sas_sync_probe(struct ata_port *ap);
80289167
BK		 1009extern int ata_sas_port_init(struct ata_port *);
1010extern int ata_sas_port_start(struct ata_port *ap);
1011extern void ata_sas_port_stop(struct ata_port *ap);
1012extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
b27dcfb0 1013extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap);
936fd732
TH		 1014extern int sata_scr_valid(struct ata_link *link);
1015extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
1016extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
1017extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
b5b3fa38
TH		 1018extern bool ata_link_online(struct ata_link *link);
1019extern bool ata_link_offline(struct ata_link *link);
6ffa01d8 1020#ifdef CONFIG_PM
cca3974e
JG		 1021extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
1022extern void ata_host_resume(struct ata_host *host);
2fcbdcb4
DW		 1023extern int ata_sas_port_async_suspend(struct ata_port *ap, int *async);
1024extern int ata_sas_port_async_resume(struct ata_port *ap, int *async);
1025#else
1026static inline int ata_sas_port_async_suspend(struct ata_port *ap, int *async)
1027{
1028 return 0;
1029}
1030static inline int ata_sas_port_async_resume(struct ata_port *ap, int *async)
1031{
1032 return 0;
1033}
6ffa01d8 1034#endif
67846b30 1035extern int ata_ratelimit(void);
97750ceb
TH		 1036extern void ata_msleep(struct ata_port *ap, unsigned int msecs);
1037extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask,
1038 u32 val, unsigned long interval, unsigned long timeout);
436d34b3 1039extern int atapi_cmd_type(u8 opcode);
9977126c
TH		 1040extern void ata_tf_to_fis(const struct ata_taskfile *tf,
1041 u8 pmp, int is_cmd, u8 *fis);
057ace5e 1042extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
7dc951ae
TH		 1043extern unsigned long ata_pack_xfermask(unsigned long pio_mask,
1044 unsigned long mwdma_mask, unsigned long udma_mask);
1045extern void ata_unpack_xfermask(unsigned long xfer_mask,
1046 unsigned long *pio_mask, unsigned long *mwdma_mask,
1047 unsigned long *udma_mask);
1048extern u8 ata_xfer_mask2mode(unsigned long xfer_mask);
1049extern unsigned long ata_xfer_mode2mask(u8 xfer_mode);
1050extern int ata_xfer_mode2shift(unsigned long xfer_mode);
1051extern const char *ata_mode_string(unsigned long xfer_mask);
1052extern unsigned long ata_id_xfermask(const u16 *id);
31cc23b3 1053extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
e46834cd 1054extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);
1da177e4
LT		 1055extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
1056 unsigned int n_elem);
057ace5e 1057extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
10305f0f 1058extern void ata_dev_disable(struct ata_device *adev);
6a62a04d
TH		 1059extern void ata_id_string(const u16 *id, unsigned char *s,
1060 unsigned int ofs, unsigned int len);
1061extern void ata_id_c_string(const u16 *id, unsigned char *s,
1062 unsigned int ofs, unsigned int len);
963e4975
AC		 1063extern unsigned int ata_do_dev_read_id(struct ata_device *dev,
1064 struct ata_taskfile *tf, u16 *id);
f686bcb8 1065extern void ata_qc_complete(struct ata_queued_cmd *qc);
79f97dad 1066extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active);
b27dcfb0 1067extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd);
1da177e4
LT		 1068extern int ata_std_bios_param(struct scsi_device *sdev,
1069 struct block_device *bdev,
1070 sector_t capacity, int geom[]);
d8d9129e 1071extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
1da177e4 1072extern int ata_scsi_slave_config(struct scsi_device *sdev);
83c47bcb 1073extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
a6e6ce8e 1074extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
e881a172 1075 int queue_depth, int reason);
f6e67035
DW		 1076extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev,
1077 int queue_depth, int reason);
3373efd8 1078extern struct ata_device *ata_dev_pair(struct ata_device *adev);
0260731f 1079extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
0e0b494c
JB		 1080extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap);
1081extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q);
1da177e4 1082
be0d18df
AC		 1083extern int ata_cable_40wire(struct ata_port *ap);
1084extern int ata_cable_80wire(struct ata_port *ap);
1085extern int ata_cable_sata(struct ata_port *ap);
c88f90c3 1086extern int ata_cable_ignore(struct ata_port *ap);
be0d18df
AC		 1087extern int ata_cable_unknown(struct ata_port *ap);
1088
624d5c51 1089/* Timing helpers */
1bc4ccff 1090extern unsigned int ata_pio_need_iordy(const struct ata_device *);
6357357c 1091extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
452503f9
AC		 1092extern int ata_timing_compute(struct ata_device *, unsigned short,
1093 struct ata_timing *, int, int);
1094extern void ata_timing_merge(const struct ata_timing *,
1095 const struct ata_timing *, struct ata_timing *,
1096 unsigned int);
a0f79b92 1097extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);
452503f9 1098
624d5c51
TH		 1099/* PCI */
1100#ifdef CONFIG_PCI
1101struct pci_dev;
1102
1103struct pci_bits {
1104 unsigned int reg; /* PCI config register to read */
1105 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
1106 unsigned long mask;
1107 unsigned long val;
452503f9
AC		 1108};
1109
624d5c51
TH		 1110extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
1111extern void ata_pci_remove_one(struct pci_dev *pdev);
1112
1113#ifdef CONFIG_PM
1114extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
1115extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
1116extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
1117extern int ata_pci_device_resume(struct pci_dev *pdev);
1118#endif /* CONFIG_PM */
1119#endif /* CONFIG_PCI */
1120
b7db04d9
BN		 1121struct platform_device;
1122
1123extern int ata_platform_remove_one(struct platform_device *pdev);
1124
624d5c51
TH		 1125/*
1126 * ACPI - drivers/ata/libata-acpi.c
1127 */
e1ddb4b6 1128#ifdef CONFIG_ATA_ACPI
c05e6ff0
TH		 1129static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1130{
1131 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
1132 return &ap->__acpi_init_gtm;
1133 return NULL;
1134}
0d02f0b2
TH		 1135int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
1136int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
7c77fa4d
TH		 1137unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev,
1138 const struct ata_acpi_gtm *gtm);
30dcf76a
MG		 1139acpi_handle ata_ap_acpi_handle(struct ata_port *ap);
1140acpi_handle ata_dev_acpi_handle(struct ata_device *dev);
021ee9a6 1141int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm);
e1ddb4b6 1142#else
c05e6ff0
TH		 1143static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1144{
1145 return NULL;
1146}
7c77fa4d
TH		 1147
1148static inline int ata_acpi_stm(const struct ata_port *ap,
1149 struct ata_acpi_gtm *stm)
1150{
1151 return -ENOSYS;
1152}
1153
1154static inline int ata_acpi_gtm(const struct ata_port *ap,
1155 struct ata_acpi_gtm *stm)
1156{
1157 return -ENOSYS;
1158}
1159
1160static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
1161 const struct ata_acpi_gtm *gtm)
1162{
1163 return 0;
1164}
021ee9a6
TH		 1165
1166static inline int ata_acpi_cbl_80wire(struct ata_port *ap,
1167 const struct ata_acpi_gtm *gtm)
1168{
1169 return 0;
1170}
e1ddb4b6 1171#endif
1da177e4 1172
ece1d636 1173/*
624d5c51 1174 * EH - drivers/ata/libata-eh.c
ece1d636 1175 */
7b70fc03 1176extern void ata_port_schedule_eh(struct ata_port *ap);
81c757bc 1177extern void ata_port_wait_eh(struct ata_port *ap);
dbd82616 1178extern int ata_link_abort(struct ata_link *link);
7b70fc03 1179extern int ata_port_abort(struct ata_port *ap);
e3180499 1180extern int ata_port_freeze(struct ata_port *ap);
7d77b247 1181extern int sata_async_notification(struct ata_port *ap);
e3180499
TH		 1182
1183extern void ata_eh_freeze_port(struct ata_port *ap);
1184extern void ata_eh_thaw_port(struct ata_port *ap);
7b70fc03 1185
ece1d636
TH		 1186extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
1187extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
10acf3b0 1188extern void ata_eh_analyze_ncq_error(struct ata_link *link);
ece1d636 1189
f5914a46
TH		 1190extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
1191 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
1192 ata_postreset_fn_t postreset);
a1efdaba 1193extern void ata_std_error_handler(struct ata_port *ap);
e4a9c373
DW		 1194extern void ata_std_sched_eh(struct ata_port *ap);
1195extern void ata_std_end_eh(struct ata_port *ap);
8a745f1f 1196extern int ata_link_nr_enabled(struct ata_link *link);
022bdb07 1197
68d1d07b
TH		 1198/*
1199 * Base operations to inherit from and initializers for sht
1200 *
1201 * Operations
1202 *
1203 * base : Common to all libata drivers.
1204 * sata : SATA controllers w/ native interface.
1205 * pmp : SATA controllers w/ PMP support.
1206 * sff : SFF ATA controllers w/o BMDMA support.
1207 * bmdma : SFF ATA controllers w/ BMDMA support.
1208 *
1209 * sht initializers
1210 *
1211 * BASE : Common to all libata drivers. The user must set
1212 * sg_tablesize and dma_boundary.
1213 * PIO : SFF ATA controllers w/ only PIO support.
1214 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and
1215 * dma_boundary are set to BMDMA limits.
1216 * NCQ : SATA controllers supporting NCQ. The user must set
1217 * sg_tablesize, dma_boundary and can_queue.
1218 */
1219extern const struct ata_port_operations ata_base_port_ops;
1220extern const struct ata_port_operations sata_port_ops;
45fabbb7 1221extern struct device_attribute *ata_common_sdev_attrs[];
68d1d07b
TH		 1222
1223#define ATA_BASE_SHT(drv_name) \
1224 .module = THIS_MODULE, \
1225 .name = drv_name, \
1226 .ioctl = ata_scsi_ioctl, \
1227 .queuecommand = ata_scsi_queuecmd, \
1228 .can_queue = ATA_DEF_QUEUE, \
1229 .this_id = ATA_SHT_THIS_ID, \
1230 .cmd_per_lun = ATA_SHT_CMD_PER_LUN, \
1231 .emulated = ATA_SHT_EMULATED, \
1232 .use_clustering = ATA_SHT_USE_CLUSTERING, \
1233 .proc_name = drv_name, \
1234 .slave_configure = ata_scsi_slave_config, \
1235 .slave_destroy = ata_scsi_slave_destroy, \
45fabbb7 1236 .bios_param = ata_std_bios_param, \
d8d9129e 1237 .unlock_native_capacity = ata_scsi_unlock_native_capacity, \
45fabbb7 1238 .sdev_attrs = ata_common_sdev_attrs
68d1d07b 1239
68d1d07b
TH		 1240#define ATA_NCQ_SHT(drv_name) \
1241 ATA_BASE_SHT(drv_name), \
1242 .change_queue_depth = ata_scsi_change_queue_depth
1243
071f44b1
TH		 1244/*
1245 * PMP helpers
1246 */
88fcd562 1247#ifdef CONFIG_SATA_PMP
071f44b1
TH		 1248static inline bool sata_pmp_supported(struct ata_port *ap)
1249{
1250 return ap->flags & ATA_FLAG_PMP;
1251}
1252
1253static inline bool sata_pmp_attached(struct ata_port *ap)
1254{
1255 return ap->nr_pmp_links != 0;
1256}
1257
1258static inline int ata_is_host_link(const struct ata_link *link)
1259{
b1c72916 1260 return link == &link->ap->link || link == link->ap->slave_link;
071f44b1 1261}
88fcd562
TH		 1262#else /* CONFIG_SATA_PMP */
1263static inline bool sata_pmp_supported(struct ata_port *ap)
1264{
1265 return false;
1266}
1267
1268static inline bool sata_pmp_attached(struct ata_port *ap)
1269{
1270 return false;
1271}
1272
1273static inline int ata_is_host_link(const struct ata_link *link)
1274{
1275 return 1;
1276}
1277#endif /* CONFIG_SATA_PMP */
071f44b1
TH		 1278
1279static inline int sata_srst_pmp(struct ata_link *link)
1280{
1281 if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
1282 return SATA_PMP_CTRL_PORT;
1283 return link->pmp;
1284}
1285
61440db6
TH		 1286/*
1287 * printk helpers
1288 */
b9075fa9 1289__printf(3, 4)
a9a79dfe
JP		 1290int ata_port_printk(const struct ata_port *ap, const char *level,
1291 const char *fmt, ...);
b9075fa9 1292__printf(3, 4)
a9a79dfe
JP		 1293int ata_link_printk(const struct ata_link *link, const char *level,
1294 const char *fmt, ...);
b9075fa9 1295__printf(3, 4)
a9a79dfe
JP		 1296int ata_dev_printk(const struct ata_device *dev, const char *level,
1297 const char *fmt, ...);
1298
1299#define ata_port_err(ap, fmt, ...) \
1300 ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__)
1301#define ata_port_warn(ap, fmt, ...) \
1302 ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__)
1303#define ata_port_notice(ap, fmt, ...) \
1304 ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__)
1305#define ata_port_info(ap, fmt, ...) \
1306 ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__)
1307#define ata_port_dbg(ap, fmt, ...) \
1308 ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__)
1309
1310#define ata_link_err(link, fmt, ...) \
1311 ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__)
1312#define ata_link_warn(link, fmt, ...) \
1313 ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__)
1314#define ata_link_notice(link, fmt, ...) \
1315 ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__)
1316#define ata_link_info(link, fmt, ...) \
1317 ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__)
1318#define ata_link_dbg(link, fmt, ...) \
1319 ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__)
1320
1321#define ata_dev_err(dev, fmt, ...) \
1322 ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__)
1323#define ata_dev_warn(dev, fmt, ...) \
1324 ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__)
1325#define ata_dev_notice(dev, fmt, ...) \
1326 ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__)
1327#define ata_dev_info(dev, fmt, ...) \
1328 ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__)
1329#define ata_dev_dbg(dev, fmt, ...) \
1330 ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__)
1da177e4 1331
06296a1e
JP		 1332void ata_print_version(const struct device *dev, const char *version);
1333
f3e81b19
TH		 1334/*
1335 * ata_eh_info helpers
1336 */
b9075fa9
JP		 1337extern __printf(2, 3)
1338void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1339extern __printf(2, 3)
1340void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
b64bbc39 1341extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
f3e81b19 1342
c0b6c037
TH		 1343static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
1344{
b558eddd 1345 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
f8f1e1cc 1346 ehi->flags |= ATA_EHI_HOTPLUGGED;
b558eddd 1347 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;
c0b6c037
TH		 1348 ehi->err_mask |= AC_ERR_ATA_BUS;
1349}
1350
cbcdd875
TH		 1351/*
1352 * port description helpers
1353 */
b9075fa9
JP		 1354extern __printf(2, 3)
1355void ata_port_desc(struct ata_port *ap, const char *fmt, ...);
cbcdd875
TH		 1356#ifdef CONFIG_PCI
1357extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
1358 const char *name);
1359#endif
1360
1da177e4
LT		 1361static inline unsigned int ata_tag_valid(unsigned int tag)
1362{
1363 return (tag < ATA_MAX_QUEUE) ? 1 : 0;
1364}
1365
2ab7db1f
TH		 1366static inline unsigned int ata_tag_internal(unsigned int tag)
1367{
83c063dd 1368 return tag == ATA_TAG_INTERNAL;
2ab7db1f
TH		 1369}
1370
5806db22
TH		 1371/*
1372 * device helpers
1373 */
e1211e3f 1374static inline unsigned int ata_class_enabled(unsigned int class)
597afd21 1375{
e0a71752
TH		 1376 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
1377 class == ATA_DEV_PMP || class == ATA_DEV_SEMB;
597afd21
TH		 1378}
1379
e1211e3f 1380static inline unsigned int ata_class_disabled(unsigned int class)
1da177e4 1381{
e0a71752
TH		 1382 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
1383 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP;
e1211e3f
TH		 1384}
1385
002c8054
TH		 1386static inline unsigned int ata_class_absent(unsigned int class)
1387{
1388 return !ata_class_enabled(class) && !ata_class_disabled(class);
1389}
1390
e1211e3f
TH		 1391static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
1392{
1393 return ata_class_enabled(dev->class);
1394}
1395
1396static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
1397{
1398 return ata_class_disabled(dev->class);
1da177e4
LT		 1399}
1400
002c8054
TH		 1401static inline unsigned int ata_dev_absent(const struct ata_device *dev)
1402{
1403 return ata_class_absent(dev->class);
1404}
1405
5806db22 1406/*
f58229f8 1407 * link helpers
5806db22 1408 */
f58229f8 1409static inline int ata_link_max_devices(const struct ata_link *link)
5806db22 1410{
8989805d 1411 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS)
5806db22
TH		 1412 return 2;
1413 return 1;
1414}
1415
da917d69
TH		 1416static inline int ata_link_active(struct ata_link *link)
1417{
1418 return ata_tag_valid(link->active_tag) || link->sactive;
1419}
1420
1eca4365
TH		 1421/*
1422 * Iterators
1423 *
1424 * ATA_LITER_* constants are used to select link iteration mode and
1425 * ATA_DITER_* device iteration mode.
1426 *
1427 * For a custom iteration directly using ata_{link|dev}_next(), if
1428 * @link or @dev, respectively, is NULL, the first element is
1429 * returned. @dev and @link can be any valid device or link and the
1430 * next element according to the iteration mode will be returned.
1431 * After the last element, NULL is returned.
1432 */
1433enum ata_link_iter_mode {
1434 ATA_LITER_EDGE, /* if present, PMP links only; otherwise,
1435 * host link. no slave link */
1436 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */
1437 ATA_LITER_PMP_FIRST, /* PMP links followed by host link,
1438 * slave link still comes after host link */
1439};
1440
1441enum ata_dev_iter_mode {
1442 ATA_DITER_ENABLED,
1443 ATA_DITER_ENABLED_REVERSE,
1444 ATA_DITER_ALL,
1445 ATA_DITER_ALL_REVERSE,
1446};
1447
1448extern struct ata_link *ata_link_next(struct ata_link *link,
1449 struct ata_port *ap,
1450 enum ata_link_iter_mode mode);
1451
1452extern struct ata_device *ata_dev_next(struct ata_device *dev,
1453 struct ata_link *link,
1454 enum ata_dev_iter_mode mode);
1455
1456/*
1457 * Shortcut notation for iterations
1458 *
1459 * ata_for_each_link() iterates over each link of @ap according to
1460 * @mode. @link points to the current link in the loop. @link is
1461 * NULL after loop termination. ata_for_each_dev() works the same way
1462 * except that it iterates over each device of @link.
1463 *
1464 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be
1465 * specified when using the following shorthand notations. Only the
1466 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be
1467 * specified. This not only increases brevity but also makes it
1468 * impossible to use ATA_LITER_* for device iteration or vice-versa.
1469 */
1470#define ata_for_each_link(link, ap, mode) \
1471 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1472 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1473
1474#define ata_for_each_dev(dev, link, mode) \
1475 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1476 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
5806db22 1477
6d1245bf
TH		 1478/**
1479 * ata_ncq_enabled - Test whether NCQ is enabled
1480 * @dev: ATA device to test for
1481 *
1482 * LOCKING:
1483 * spin_lock_irqsave(host lock)
1484 *
1485 * RETURNS:
1486 * 1 if NCQ is enabled for @dev, 0 otherwise.
1487 */
1488static inline int ata_ncq_enabled(struct ata_device *dev)
1489{
1490 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF |
1491 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
1492}
0baab86b 1493
1da177e4
LT		 1494static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
1495{
1496 qc->tf.ctl |= ATA_NIEN;
1497}
1498
f69499f4
TH		 1499static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
1500 unsigned int tag)
1da177e4
LT		 1501{
1502 if (likely(ata_tag_valid(tag)))
1503 return &ap->qcmd[tag];
1504 return NULL;
1505}
1506
f69499f4
TH		 1507static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
1508 unsigned int tag)
1509{
1510 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
1511
1512 if (unlikely(!qc) || !ap->ops->error_handler)
1513 return qc;
1514
1515 if ((qc->flags & (ATA_QCFLAG_ACTIVE |
1516 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE)
1517 return qc;
1518
1519 return NULL;
1520}
1521
aacda375
TH		 1522static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc)
1523{
1524 return qc->nbytes - min(qc->extrabytes, qc->nbytes);
1525}
1526
3373efd8 1527static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
1da177e4
LT		 1528{
1529 memset(tf, 0, sizeof(*tf));
1530
5fe7454a 1531#ifdef CONFIG_ATA_SFF
9af5c9c9 1532 tf->ctl = dev->link->ap->ctl;
5fe7454a
TH		 1533#else
1534 tf->ctl = ATA_DEVCTL_OBS;
1535#endif
3373efd8 1536 if (dev->devno == 0)
1da177e4
LT		 1537 tf->device = ATA_DEVICE_OBS;
1538 else
1539 tf->device = ATA_DEVICE_OBS | ATA_DEV1;
1540}
1541
2c13b7ce
JG		 1542static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
1543{
501e0c50 1544 qc->dma_dir = DMA_NONE;
ff2aeb1e 1545 qc->sg = NULL;
2c13b7ce 1546 qc->flags = 0;
87260216
JA		 1547 qc->cursg = NULL;
1548 qc->cursg_ofs = 0;
aacda375 1549 qc->nbytes = qc->extrabytes = qc->curbytes = 0;
7a801184 1550 qc->n_elem = 0;
a22e2eb0 1551 qc->err_mask = 0;
5a5dbd18 1552 qc->sect_size = ATA_SECT_SIZE;
2c13b7ce 1553
3373efd8 1554 ata_tf_init(qc->dev, &qc->tf);
e61e0672
TH		 1555
1556 /* init result_tf such that it indicates normal completion */
1557 qc->result_tf.command = ATA_DRDY;
1558 qc->result_tf.feature = 0;
2c13b7ce
JG		 1559}
1560
057ace5e 1561static inline int ata_try_flush_cache(const struct ata_device *dev)
1da177e4
LT		 1562{
1563 return ata_id_wcache_enabled(dev->id) ||
1564 ata_id_has_flush(dev->id) ||
1565 ata_id_has_flush_ext(dev->id);
1566}
1567
a7dac447
JG		 1568static inline unsigned int ac_err_mask(u8 status)
1569{
3655d1d3 1570 if (status & (ATA_BUSY | ATA_DRQ))
11a56d24 1571 return AC_ERR_HSM;
a7dac447
JG		 1572 if (status & (ATA_ERR | ATA_DF))
1573 return AC_ERR_DEV;
1574 return 0;
1575}
1576
1577static inline unsigned int __ac_err_mask(u8 status)
1578{
1579 unsigned int mask = ac_err_mask(status);
1580 if (mask == 0)
1581 return AC_ERR_OTHER;
1582 return mask;
1583}
1584
35bb94b1
JG		 1585static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
1586{
4911487a 1587 return *(struct ata_port **)&host->hostdata[0];
35bb94b1
JG		 1588}
1589
78ab88f0
TH		 1590static inline int ata_check_ready(u8 status)
1591{
005b1f74
JG		 1592 if (!(status & ATA_BUSY))
1593 return 1;
78ab88f0
TH		 1594
1595 /* 0xff indicates either no device or device not ready */
1596 if (status == 0xff)
1597 return -ENODEV;
1598
005b1f74 1599 return 0;
78ab88f0
TH		 1600}
1601
341c2c95
TH		 1602static inline unsigned long ata_deadline(unsigned long from_jiffies,
1603 unsigned long timeout_msecs)
1604{
1605 return from_jiffies + msecs_to_jiffies(timeout_msecs);
1606}
1607
b15b3eba
AC		 1608/* Don't open code these in drivers as there are traps. Firstly the range may
1609 change in future hardware and specs, secondly 0xFF means 'no DMA' but is
1610 > UDMA_0. Dyma ddreigiau */
1611
1612static inline int ata_using_mwdma(struct ata_device *adev)
1613{
1614 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4)
1615 return 1;
1616 return 0;
1617}
1618
1619static inline int ata_using_udma(struct ata_device *adev)
1620{
1621 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7)
1622 return 1;
1623 return 0;
1624}
1625
1626static inline int ata_dma_enabled(struct ata_device *adev)
1627{
1628 return (adev->dma_mode == 0xFF ? 0 : 1);
1629}
48515f6c
TH		 1630
1631/**************************************************************************
1632 * PMP - drivers/ata/libata-pmp.c
1633 */
88fcd562
TH		 1634#ifdef CONFIG_SATA_PMP
1635
48515f6c
TH		 1636extern const struct ata_port_operations sata_pmp_port_ops;
1637
1638extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
1639extern void sata_pmp_error_handler(struct ata_port *ap);
1640
88fcd562
TH		 1641#else /* CONFIG_SATA_PMP */
1642
1643#define sata_pmp_port_ops sata_port_ops
1644#define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1645#define sata_pmp_error_handler ata_std_error_handler
1646
1647#endif /* CONFIG_SATA_PMP */
1648
48515f6c 1649
624d5c51
TH		 1650/**************************************************************************
1651 * SFF - drivers/ata/libata-sff.c
1652 */
127102ae
TH		 1653#ifdef CONFIG_ATA_SFF
1654
624d5c51 1655extern const struct ata_port_operations ata_sff_port_ops;
871af121 1656extern const struct ata_port_operations ata_bmdma32_port_ops;
624d5c51
TH		 1657
1658/* PIO only, sg_tablesize and dma_boundary limits can be removed */
1659#define ATA_PIO_SHT(drv_name) \
1660 ATA_BASE_SHT(drv_name), \
1661 .sg_tablesize = LIBATA_MAX_PRD, \
1662 .dma_boundary = ATA_DMA_BOUNDARY
1663
9363c382
TH		 1664extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
1665extern u8 ata_sff_check_status(struct ata_port *ap);
a57c1bad
AC		 1666extern void ata_sff_pause(struct ata_port *ap);
1667extern void ata_sff_dma_pause(struct ata_port *ap);
9363c382
TH		 1668extern int ata_sff_busy_sleep(struct ata_port *ap,
1669 unsigned long timeout_pat, unsigned long timeout);
705e76be 1670extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline);
9363c382
TH		 1671extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
1672extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
1673extern void ata_sff_exec_command(struct ata_port *ap,
1674 const struct ata_taskfile *tf);
1675extern unsigned int ata_sff_data_xfer(struct ata_device *dev,
624d5c51 1676 unsigned char *buf, unsigned int buflen, int rw);
871af121
AC		 1677extern unsigned int ata_sff_data_xfer32(struct ata_device *dev,
1678 unsigned char *buf, unsigned int buflen, int rw);
9363c382 1679extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev,
624d5c51 1680 unsigned char *buf, unsigned int buflen, int rw);
e42a542b 1681extern void ata_sff_irq_on(struct ata_port *ap);
9363c382
TH		 1682extern void ata_sff_irq_clear(struct ata_port *ap);
1683extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
1684 u8 status, int in_wq);
64b97594
VK		 1685extern void ata_sff_queue_work(struct work_struct *work);
1686extern void ata_sff_queue_delayed_work(struct delayed_work *dwork,
1687 unsigned long delay);
ea3c6450 1688extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay);
9363c382 1689extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
22183bf5 1690extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
c3b28894 1691extern unsigned int ata_sff_port_intr(struct ata_port *ap,
9363c382
TH		 1692 struct ata_queued_cmd *qc);
1693extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
c96f1732 1694extern void ata_sff_lost_interrupt(struct ata_port *ap);
9363c382
TH		 1695extern void ata_sff_freeze(struct ata_port *ap);
1696extern void ata_sff_thaw(struct ata_port *ap);
1697extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
1698extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
1699 u8 *r_err);
705e76be
TH		 1700extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
1701 unsigned long deadline);
9363c382 1702extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
624d5c51 1703 unsigned long deadline);
9363c382
TH		 1704extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
1705 unsigned long deadline);
1706extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
3d47aa8e 1707extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
9363c382 1708extern void ata_sff_error_handler(struct ata_port *ap);
9363c382 1709extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
624d5c51 1710#ifdef CONFIG_PCI
9363c382
TH		 1711extern int ata_pci_sff_init_host(struct ata_host *host);
1712extern int ata_pci_sff_prepare_host(struct pci_dev *pdev,
624d5c51
TH		 1713 const struct ata_port_info * const * ppi,
1714 struct ata_host **r_host);
9363c382 1715extern int ata_pci_sff_activate_host(struct ata_host *host,
624d5c51
TH		 1716 irq_handler_t irq_handler,
1717 struct scsi_host_template *sht);
9363c382 1718extern int ata_pci_sff_init_one(struct pci_dev *pdev,
16ea0fc9
AC		 1719 const struct ata_port_info * const * ppi,
1720 struct scsi_host_template *sht, void *host_priv, int hflags);
624d5c51
TH		 1721#endif /* CONFIG_PCI */
1722
9a7780c9
TH		 1723#ifdef CONFIG_ATA_BMDMA
1724
1725extern const struct ata_port_operations ata_bmdma_port_ops;
1726
1727#define ATA_BMDMA_SHT(drv_name) \
1728 ATA_BASE_SHT(drv_name), \
1729 .sg_tablesize = LIBATA_MAX_PRD, \
1730 .dma_boundary = ATA_DMA_BOUNDARY
1731
f47451c4 1732extern void ata_bmdma_qc_prep(struct ata_queued_cmd *qc);
360ff783 1733extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc);
f47451c4 1734extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc);
c3b28894
TH		 1735extern unsigned int ata_bmdma_port_intr(struct ata_port *ap,
1736 struct ata_queued_cmd *qc);
1737extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance);
fe06e5f9
TH		 1738extern void ata_bmdma_error_handler(struct ata_port *ap);
1739extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
37f65b8b 1740extern void ata_bmdma_irq_clear(struct ata_port *ap);
9f2f7210
TH		 1741extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
1742extern void ata_bmdma_start(struct ata_queued_cmd *qc);
1743extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
1744extern u8 ata_bmdma_status(struct ata_port *ap);
c7087652
TH		 1745extern int ata_bmdma_port_start(struct ata_port *ap);
1746extern int ata_bmdma_port_start32(struct ata_port *ap);
9f2f7210
TH		 1747
1748#ifdef CONFIG_PCI
1749extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
c7087652 1750extern void ata_pci_bmdma_init(struct ata_host *host);
1c5afdf7
TH		 1751extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev,
1752 const struct ata_port_info * const * ppi,
1753 struct ata_host **r_host);
1754extern int ata_pci_bmdma_init_one(struct pci_dev *pdev,
1755 const struct ata_port_info * const * ppi,
1756 struct scsi_host_template *sht,
1757 void *host_priv, int hflags);
9f2f7210 1758#endif /* CONFIG_PCI */
9a7780c9 1759#endif /* CONFIG_ATA_BMDMA */
9f2f7210 1760
624d5c51 1761/**
9363c382 1762 * ata_sff_busy_wait - Wait for a port status register
624d5c51
TH		 1763 * @ap: Port to wait for.
1764 * @bits: bits that must be clear
1765 * @max: number of 10uS waits to perform
1766 *
1767 * Waits up to max*10 microseconds for the selected bits in the port's
1768 * status register to be cleared.
1769 * Returns final value of status register.
1770 *
1771 * LOCKING:
1772 * Inherited from caller.
1773 */
9363c382
TH		 1774static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits,
1775 unsigned int max)
624d5c51
TH		 1776{
1777 u8 status;
1778
1779 do {
1780 udelay(10);
5682ed33 1781 status = ap->ops->sff_check_status(ap);
624d5c51
TH		 1782 max--;
1783 } while (status != 0xff && (status & bits) && (max > 0));
1784
1785 return status;
1786}
1787
1788/**
1789 * ata_wait_idle - Wait for a port to be idle.
1790 * @ap: Port to wait for.
1791 *
1792 * Waits up to 10ms for port's BUSY and DRQ signals to clear.
1793 * Returns final value of status register.
1794 *
1795 * LOCKING:
1796 * Inherited from caller.
1797 */
1798static inline u8 ata_wait_idle(struct ata_port *ap)
1799{
9363c382 1800 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
624d5c51
TH		 1801
1802#ifdef ATA_DEBUG
1803 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
1804 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n",
1805 status);
1806#endif
1807
1808 return status;
1809}
127102ae 1810#endif /* CONFIG_ATA_SFF */
624d5c51 1811
1da177e4 1812#endif /* __LINUX_LIBATA_H__ */
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