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lcd: add devm_lcd_device_{register,unregister}()
[linux-2.6-block.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 */
a32450e1 401 ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17), /* Set max sects to 65535 */
b3a70601 402
2dcb407e 403 /* DMA mask for user DMA control: User visible values; DO NOT
b3a70601
AC		 404 renumber */
405 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */
406 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */
407 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */
ceb0c642
TH		 408
409 /* ATAPI command types */
410 ATAPI_READ = 0, /* READs */
411 ATAPI_WRITE = 1, /* WRITEs */
412 ATAPI_READ_CD = 2, /* READ CD [MSF] */
e52dcc48
TH		 413 ATAPI_PASS_THRU = 3, /* SAT pass-thru */
414 ATAPI_MISC = 4, /* the rest */
624d5c51
TH		 415
416 /* Timing constants */
417 ATA_TIMING_SETUP = (1 << 0),
418 ATA_TIMING_ACT8B = (1 << 1),
419 ATA_TIMING_REC8B = (1 << 2),
420 ATA_TIMING_CYC8B = (1 << 3),
421 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
422 ATA_TIMING_CYC8B,
423 ATA_TIMING_ACTIVE = (1 << 4),
424 ATA_TIMING_RECOVER = (1 << 5),
3ada9c12
DD		 425 ATA_TIMING_DMACK_HOLD = (1 << 6),
426 ATA_TIMING_CYCLE = (1 << 7),
427 ATA_TIMING_UDMA = (1 << 8),
624d5c51
TH		 428 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
429 ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
430 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
3ada9c12
DD		 431 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE |
432 ATA_TIMING_UDMA,
f1bce7f8
TH		 433
434 /* ACPI constants */
435 ATA_ACPI_FILTER_SETXFER = 1 << 0,
436 ATA_ACPI_FILTER_LOCK = 1 << 1,
437 ATA_ACPI_FILTER_DIPM = 1 << 2,
fa5b561c
TH		 438 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */
439 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */
f1bce7f8
TH		 440
441 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER |
442 ATA_ACPI_FILTER_LOCK |
443 ATA_ACPI_FILTER_DIPM,
1da177e4
LT		 444};
445
7dc951ae
TH		 446enum ata_xfer_mask {
447 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1)
448 << ATA_SHIFT_PIO,
449 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1)
450 << ATA_SHIFT_MWDMA,
451 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1)
452 << ATA_SHIFT_UDMA,
453};
454
14be71f4 455enum hsm_task_states {
c56b14d2 456 HSM_ST_IDLE, /* no command on going */
71527647
AL		 457 HSM_ST_FIRST, /* (waiting the device to)
458 write CDB or first data block */
c56b14d2
AL		 459 HSM_ST, /* (waiting the device to) transfer data */
460 HSM_ST_LAST, /* (waiting the device to) complete command */
c56b14d2 461 HSM_ST_ERR, /* error */
1da177e4
LT		 462};
463
a7dac447 464enum ata_completion_errors {
11a56d24
TH		 465 AC_ERR_DEV = (1 << 0), /* device reported error */
466 AC_ERR_HSM = (1 << 1), /* host state machine violation */
467 AC_ERR_TIMEOUT = (1 << 2), /* timeout */
468 AC_ERR_MEDIA = (1 << 3), /* media error */
469 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */
470 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */
471 AC_ERR_SYSTEM = (1 << 6), /* system error */
472 AC_ERR_INVALID = (1 << 7), /* invalid argument */
473 AC_ERR_OTHER = (1 << 8), /* unknown */
55a8e2c8 474 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */
5335b729 475 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */
a7dac447
JG		 476};
477
c93b263e
TH		 478/*
479 * Link power management policy: If you alter this, you also need to
480 * alter libata-scsi.c (for the ascii descriptions)
481 */
482enum ata_lpm_policy {
483 ATA_LPM_UNKNOWN,
484 ATA_LPM_MAX_POWER,
485 ATA_LPM_MED_POWER,
486 ATA_LPM_MIN_POWER,
487};
488
6b7ae954
TH		 489enum ata_lpm_hints {
490 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */
491 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */
492};
493
1da177e4
LT		 494/* forward declarations */
495struct scsi_device;
496struct ata_port_operations;
497struct ata_port;
cc0680a5 498struct ata_link;
1da177e4
LT		 499struct ata_queued_cmd;
500
501/* typedefs */
77853bf2 502typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
cc0680a5
TH		 503typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
504typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
d4b2bab4 505 unsigned long deadline);
cc0680a5 506typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
1da177e4 507
ee959b00 508extern struct device_attribute dev_attr_link_power_management_policy;
45fabbb7 509extern struct device_attribute dev_attr_unload_heads;
18f7ba4c
KCA		 510extern struct device_attribute dev_attr_em_message_type;
511extern struct device_attribute dev_attr_em_message;
512extern struct device_attribute dev_attr_sw_activity;
513
514enum sw_activity {
515 OFF,
516 BLINK_ON,
517 BLINK_OFF,
518};
ca77329f 519
127102ae 520#ifdef CONFIG_ATA_SFF
1da177e4 521struct ata_ioports {
0d5ff566
TH		 522 void __iomem *cmd_addr;
523 void __iomem *data_addr;
524 void __iomem *error_addr;
525 void __iomem *feature_addr;
526 void __iomem *nsect_addr;
527 void __iomem *lbal_addr;
528 void __iomem *lbam_addr;
529 void __iomem *lbah_addr;
530 void __iomem *device_addr;
531 void __iomem *status_addr;
532 void __iomem *command_addr;
533 void __iomem *altstatus_addr;
534 void __iomem *ctl_addr;
9a7780c9 535#ifdef CONFIG_ATA_BMDMA
0d5ff566 536 void __iomem *bmdma_addr;
9a7780c9 537#endif /* CONFIG_ATA_BMDMA */
0d5ff566 538 void __iomem *scr_addr;
1da177e4 539};
127102ae 540#endif /* CONFIG_ATA_SFF */
1da177e4 541
cca3974e 542struct ata_host {
1da177e4
LT		 543 spinlock_t lock;
544 struct device *dev;
0d5ff566 545 void __iomem * const *iomap;
1da177e4
LT		 546 unsigned int n_ports;
547 void *private_data;
029cfd6b 548 struct ata_port_operations *ops;
5444a6f4 549 unsigned long flags;
c0c362b6
TH		 550
551 struct mutex eh_mutex;
552 struct task_struct *eh_owner;
553
032af1ce 554 struct ata_port *simplex_claimed; /* channel owning the DMA */
f0eb62b8 555 struct ata_port *ports[0];
1da177e4
LT		 556};
557
558struct ata_queued_cmd {
559 struct ata_port *ap;
560 struct ata_device *dev;
561
562 struct scsi_cmnd *scsicmd;
563 void (*scsidone)(struct scsi_cmnd *);
564
565 struct ata_taskfile tf;
566 u8 cdb[ATAPI_CDB_LEN];
567
568 unsigned long flags; /* ATA_QCFLAG_xxx */
569 unsigned int tag;
570 unsigned int n_elem;
5825627c 571 unsigned int orig_n_elem;
1da177e4
LT		 572
573 int dma_dir;
574
5a5dbd18 575 unsigned int sect_size;
cedc9a47 576
1da177e4 577 unsigned int nbytes;
aacda375 578 unsigned int extrabytes;
1da177e4
LT		 579 unsigned int curbytes;
580
1da177e4 581 struct scatterlist sgent;
1da177e4 582
ff2aeb1e 583 struct scatterlist *sg;
1da177e4 584
b34e9042
RK		 585 struct scatterlist *cursg;
586 unsigned int cursg_ofs;
587
a22e2eb0 588 unsigned int err_mask;
e61e0672 589 struct ata_taskfile result_tf;
1da177e4
LT		 590 ata_qc_cb_t complete_fn;
591
1da177e4 592 void *private_data;
1c50dc83 593 void *lldd_task;
1da177e4
LT		 594};
595
cca3974e 596struct ata_port_stats {
1da177e4
LT		 597 unsigned long unhandled_irq;
598 unsigned long idle_irq;
599 unsigned long rw_reqbuf;
600};
601
0c247c55 602struct ata_ering_entry {
3884f7b0 603 unsigned int eflags;
0c247c55
TH		 604 unsigned int err_mask;
605 u64 timestamp;
606};
607
608struct ata_ering {
609 int cursor;
610 struct ata_ering_entry ring[ATA_ERING_SIZE];
611};
612
1da177e4 613struct ata_device {
9af5c9c9 614 struct ata_link *link;
72fa4b74 615 unsigned int devno; /* 0 or 1 */
75683fe7 616 unsigned int horkage; /* List of broken features */
6866e7bc 617 unsigned long flags; /* ATA_DFLAG_xxx */
3edebac4 618 struct scsi_device *sdev; /* attached SCSI device */
95514fd8 619 void *private_data;
fafbae87 620#ifdef CONFIG_ATA_ACPI
398e0782 621 union acpi_object *gtf_cache;
110f66d2 622 unsigned int gtf_filter;
afe75951
AL		 623#endif
624#ifdef CONFIG_SATA_ZPODD
625 void *zpodd;
fafbae87 626#endif
d9027470 627 struct device tdev;
99cf610a 628 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */
72fa4b74 629 u64 n_sectors; /* size of device, if ATA */
5920dadf 630 u64 n_native_sectors; /* native size, if ATA */
1da177e4 631 unsigned int class; /* ATA_DEV_xxx */
45fabbb7 632 unsigned long unpark_deadline;
e0a71752 633
1da177e4
LT		 634 u8 pio_mode;
635 u8 dma_mode;
636 u8 xfer_mode;
637 unsigned int xfer_shift; /* ATA_SHIFT_xxx */
638
8cbd6df1
AL		 639 unsigned int multi_count; /* sectors count for
640 READ/WRITE MULTIPLE */
b00eec1d 641 unsigned int max_sectors; /* per-device max sectors */
6e7846e9 642 unsigned int cdb_len;
8bf62ece 643
acf356b1 644 /* per-dev xfer mask */
7dc951ae
TH		 645 unsigned long pio_mask;
646 unsigned long mwdma_mask;
647 unsigned long udma_mask;
acf356b1 648
8bf62ece
AL		 649 /* for CHS addressing */
650 u16 cylinders; /* Number of cylinders */
651 u16 heads; /* Number of heads */
652 u16 sectors; /* Number of sectors per track */
0c247c55 653
f7e98930
JG		 654 union {
655 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
656 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
657 };
99cf610a 658
803739d2
SH		 659 /* DEVSLP Timing Variables from Identify Device Data Log */
660 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE];
65fe1f0f 661
99cf610a
TH		 662 /* error history */
663 int spdn_cnt;
664 /* ering is CLEAR_END, read comment above CLEAR_END */
665 struct ata_ering ering;
1da177e4
LT		 666};
667
99cf610a
TH		 668/* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are
669 * cleared to zero on ata_dev_init().
72fa4b74 670 */
99cf610a
TH		 671#define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
672#define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
72fa4b74 673
f3e81b19
TH		 674struct ata_eh_info {
675 struct ata_device *dev; /* offending device */
676 u32 serror; /* SError from LLDD */
677 unsigned int err_mask; /* port-wide err_mask */
678 unsigned int action; /* ATA_EH_* action mask */
47005f25 679 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */
f3e81b19 680 unsigned int flags; /* ATA_EHI_* flags */
abdda733 681
abdda733
TH		 682 unsigned int probe_mask;
683
f3e81b19
TH		 684 char desc[ATA_EH_DESC_LEN];
685 int desc_len;
686};
687
688struct ata_eh_context {
689 struct ata_eh_info i;
690 int tries[ATA_MAX_DEVICES];
87fbc5a0
TH		 691 int cmd_timeout_idx[ATA_MAX_DEVICES]
692 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE];
abdda733
TH		 693 unsigned int classes[ATA_MAX_DEVICES];
694 unsigned int did_probe_mask;
45fabbb7 695 unsigned int unloaded_mask;
00115e0f
TH		 696 unsigned int saved_ncq_enabled;
697 u8 saved_xfer_mode[ATA_MAX_DEVICES];
0a2c0f56
TH		 698 /* timestamp for the last reset attempt or success */
699 unsigned long last_reset;
f3e81b19
TH		 700};
701
64578a3d
TH		 702struct ata_acpi_drive
703{
704 u32 pio;
705 u32 dma;
706} __packed;
707
708struct ata_acpi_gtm {
709 struct ata_acpi_drive drive[2];
710 u32 flags;
711} __packed;
712
9af5c9c9
TH		 713struct ata_link {
714 struct ata_port *ap;
8989805d 715 int pmp; /* port multiplier port # */
9af5c9c9 716
d9027470 717 struct device tdev;
9af5c9c9
TH		 718 unsigned int active_tag; /* active tag on this link */
719 u32 sactive; /* active NCQ commands */
720
0c88758b
TH		 721 unsigned int flags; /* ATA_LFLAG_xxx */
722
d127ea7b 723 u32 saved_scontrol; /* SControl on probe */
9af5c9c9
TH		 724 unsigned int hw_sata_spd_limit;
725 unsigned int sata_spd_limit;
726 unsigned int sata_spd; /* current SATA PHY speed */
6b7ae954 727 enum ata_lpm_policy lpm_policy;
9af5c9c9
TH		 728
729 /* record runtime error info, protected by host_set lock */
730 struct ata_eh_info eh_info;
731 /* EH context */
732 struct ata_eh_context eh_context;
733
734 struct ata_device device[ATA_MAX_DEVICES];
735};
d9027470
GG		 736#define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
737#define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
9af5c9c9 738
1da177e4 739struct ata_port {
cca3974e 740 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */
029cfd6b 741 struct ata_port_operations *ops;
ba6a1308 742 spinlock_t *lock;
e3cf95dd
AC		 743 /* Flags owned by the EH context. Only EH should touch these once the
744 port is active */
1da177e4 745 unsigned long flags; /* ATA_FLAG_xxx */
e3cf95dd 746 /* Flags that change dynamically, protected by ap->lock */
b51e9e5d 747 unsigned int pflags; /* ATA_PFLAG_xxx */
44877b4e
TH		 748 unsigned int print_id; /* user visible unique port ID */
749 unsigned int port_no; /* 0 based port no. inside the host */
1da177e4 750
127102ae 751#ifdef CONFIG_ATA_SFF
1da177e4 752 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */
1da177e4
LT		 753 u8 ctl; /* cache of ATA control register */
754 u8 last_ctl; /* Cache last written value */
ea3c6450 755 struct ata_link* sff_pio_task_link; /* link currently used */
c429137a 756 struct delayed_work sff_pio_task;
9a7780c9 757#ifdef CONFIG_ATA_BMDMA
f60d7011
TH		 758 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */
759 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */
9a7780c9 760#endif /* CONFIG_ATA_BMDMA */
5fe7454a
TH		 761#endif /* CONFIG_ATA_SFF */
762
1da177e4
LT		 763 unsigned int pio_mask;
764 unsigned int mwdma_mask;
765 unsigned int udma_mask;
766 unsigned int cbl; /* cable type; ATA_CBL_xxx */
1da177e4
LT		 767
768 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE];
8a8bc223 769 unsigned long qc_allocated;
dedaf2b0 770 unsigned int qc_active;
da917d69 771 int nr_active_links; /* #links with active qcs */
dedaf2b0 772
b1c72916
TH		 773 struct ata_link link; /* host default link */
774 struct ata_link *slave_link; /* see ata_slave_link_init() */
1da177e4 775
8989805d
TH		 776 int nr_pmp_links; /* nr of available PMP links */
777 struct ata_link *pmp_link; /* array of PMP links */
da917d69 778 struct ata_link *excl_link; /* for PMP qc exclusion */
8989805d 779
cca3974e
JG		 780 struct ata_port_stats stats;
781 struct ata_host *host;
2f1f610b 782 struct device *dev;
d9027470 783 struct device tdev;
1da177e4 784
ad72cf98 785 struct mutex scsi_scan_mutex;
52bad64d 786 struct delayed_work hotplug_task;
3b01b8af 787 struct work_struct scsi_rescan_task;
86e45b6b 788
14be71f4 789 unsigned int hsm_task_state;
1da177e4 790
bfd60579 791 u32 msg_enable;
a72ec4ce 792 struct list_head eh_done_q;
c6cf9e99 793 wait_queue_head_t eh_wait_q;
a1e10f7e 794 int eh_tries;
45fabbb7 795 struct completion park_req_pending;
bfd60579 796
500530f6
TH		 797 pm_message_t pm_mesg;
798 int *pm_result;
6b7ae954 799 enum ata_lpm_policy target_lpm_policy;
500530f6 800
5ddf24c5
TH		 801 struct timer_list fastdrain_timer;
802 unsigned long fastdrain_cnt;
803
18f7ba4c 804 int em_message_type;
1da177e4 805 void *private_data;
fe635c7e 806
fafbae87 807#ifdef CONFIG_ATA_ACPI
c05e6ff0 808 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */
fafbae87 809#endif
84bda12a
TH		 810 /* owned by EH */
811 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
1da177e4
LT		 812};
813
029cfd6b
TH		 814/* The following initializer overrides a method to NULL whether one of
815 * its parent has the method defined or not. This is equivalent to
816 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant
817 * expression and thus can't be used as an initializer.
818 */
819#define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
820
1da177e4 821struct ata_port_operations {
c1bc899f
TH		 822 /*
823 * Command execution
824 */
825 int (*qc_defer)(struct ata_queued_cmd *qc);
826 int (*check_atapi_dma)(struct ata_queued_cmd *qc);
827 void (*qc_prep)(struct ata_queued_cmd *qc);
828 unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
22183bf5 829 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc);
1da177e4 830
c1bc899f
TH		 831 /*
832 * Configuration and exception handling
833 */
834 int (*cable_detect)(struct ata_port *ap);
835 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask);
836 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
837 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
838 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
963e4975 839 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id);
1da177e4 840
c1bc899f 841 void (*dev_config)(struct ata_device *dev);
1da177e4 842
c1bc899f
TH		 843 void (*freeze)(struct ata_port *ap);
844 void (*thaw)(struct ata_port *ap);
a1efdaba
TH		 845 ata_prereset_fn_t prereset;
846 ata_reset_fn_t softreset;
847 ata_reset_fn_t hardreset;
848 ata_postreset_fn_t postreset;
849 ata_prereset_fn_t pmp_prereset;
850 ata_reset_fn_t pmp_softreset;
851 ata_reset_fn_t pmp_hardreset;
852 ata_postreset_fn_t pmp_postreset;
c1bc899f 853 void (*error_handler)(struct ata_port *ap);
c96f1732 854 void (*lost_interrupt)(struct ata_port *ap);
c1bc899f 855 void (*post_internal_cmd)(struct ata_queued_cmd *qc);
e4a9c373
DW		 856 void (*sched_eh)(struct ata_port *ap);
857 void (*end_eh)(struct ata_port *ap);
c1bc899f
TH		 858
859 /*
860 * Optional features
861 */
82ef04fb
TH		 862 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val);
863 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val);
c1bc899f
TH		 864 void (*pmp_attach)(struct ata_port *ap);
865 void (*pmp_detach)(struct ata_port *ap);
6b7ae954
TH		 866 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy,
867 unsigned hints);
c1bc899f
TH		 868
869 /*
870 * Start, stop, suspend and resume
871 */
872 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg);
873 int (*port_resume)(struct ata_port *ap);
874 int (*port_start)(struct ata_port *ap);
875 void (*port_stop)(struct ata_port *ap);
876 void (*host_stop)(struct ata_host *host);
877
127102ae 878#ifdef CONFIG_ATA_SFF
c1bc899f
TH		 879 /*
880 * SFF / taskfile oriented ops
881 */
5682ed33 882 void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
41dec29b 883 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl);
5682ed33
TH		 884 u8 (*sff_check_status)(struct ata_port *ap);
885 u8 (*sff_check_altstatus)(struct ata_port *ap);
886 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
887 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
888 void (*sff_exec_command)(struct ata_port *ap,
889 const struct ata_taskfile *tf);
890 unsigned int (*sff_data_xfer)(struct ata_device *dev,
891 unsigned char *buf, unsigned int buflen, int rw);
e42a542b 892 void (*sff_irq_on)(struct ata_port *);
27943620 893 bool (*sff_irq_check)(struct ata_port *);
5682ed33 894 void (*sff_irq_clear)(struct ata_port *);
8244cd05 895 void (*sff_drain_fifo)(struct ata_queued_cmd *qc);
5682ed33 896
9a7780c9 897#ifdef CONFIG_ATA_BMDMA
c1bc899f
TH		 898 void (*bmdma_setup)(struct ata_queued_cmd *qc);
899 void (*bmdma_start)(struct ata_queued_cmd *qc);
900 void (*bmdma_stop)(struct ata_queued_cmd *qc);
901 u8 (*bmdma_status)(struct ata_port *ap);
9a7780c9 902#endif /* CONFIG_ATA_BMDMA */
127102ae 903#endif /* CONFIG_ATA_SFF */
c1bc899f 904
18f7ba4c
KCA		 905 ssize_t (*em_show)(struct ata_port *ap, char *buf);
906 ssize_t (*em_store)(struct ata_port *ap, const char *message,
907 size_t size);
908 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf);
909 ssize_t (*sw_activity_store)(struct ata_device *dev,
910 enum sw_activity val);
c1bc899f
TH		 911 /*
912 * Obsolete
9ec957f2 913 */
c1bc899f
TH		 914 void (*phy_reset)(struct ata_port *ap);
915 void (*eng_timeout)(struct ata_port *ap);
029cfd6b
TH		 916
917 /*
918 * ->inherits must be the last field and all the preceding
919 * fields must be pointers.
920 */
921 const struct ata_port_operations *inherits;
1da177e4
LT		 922};
923
924struct ata_port_info {
cca3974e 925 unsigned long flags;
0c88758b 926 unsigned long link_flags;
1da177e4
LT		 927 unsigned long pio_mask;
928 unsigned long mwdma_mask;
929 unsigned long udma_mask;
029cfd6b 930 struct ata_port_operations *port_ops;
e99f8b5e 931 void *private_data;
1da177e4
LT		 932};
933
452503f9
AC		 934struct ata_timing {
935 unsigned short mode; /* ATA mode */
936 unsigned short setup; /* t1 */
937 unsigned short act8b; /* t2 for 8-bit I/O */
938 unsigned short rec8b; /* t2i for 8-bit I/O */
939 unsigned short cyc8b; /* t0 for 8-bit I/O */
940 unsigned short active; /* t2 or tD */
941 unsigned short recover; /* t2i or tK */
3ada9c12 942 unsigned short dmack_hold; /* tj */
452503f9
AC		 943 unsigned short cycle; /* t0 */
944 unsigned short udma; /* t2CYCTYP/2 */
945};
946
624d5c51
TH		 947/*
948 * Core layer - drivers/ata/libata-core.c
949 */
e9c83914
TH		 950extern const unsigned long sata_deb_timing_normal[];
951extern const unsigned long sata_deb_timing_hotplug[];
952extern const unsigned long sata_deb_timing_long[];
953
029cfd6b 954extern struct ata_port_operations ata_dummy_port_ops;
21b0ad4f 955extern const struct ata_port_info ata_dummy_port_info;
dd5b06c4 956
e9c83914
TH		 957static inline const unsigned long *
958sata_ehc_deb_timing(struct ata_eh_context *ehc)
959{
960 if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
961 return sata_deb_timing_hotplug;
962 else
963 return sata_deb_timing_normal;
964}
d7bb4cc7 965
dd5b06c4
TH		 966static inline int ata_port_is_dummy(struct ata_port *ap)
967{
968 return ap->ops == &ata_dummy_port_ops;
969}
970
936fd732 971extern int sata_set_spd(struct ata_link *link);
0aa1113d 972extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
aa2731ad
TH		 973extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
974 int (*check_ready)(struct ata_link *link));
936fd732
TH		 975extern int sata_link_debounce(struct ata_link *link,
976 const unsigned long *params, unsigned long deadline);
977extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
978 unsigned long deadline);
1152b261
TH		 979extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
980 bool spm_wakeup);
cc0680a5 981extern int sata_link_hardreset(struct ata_link *link,
9dadd45b
TH		 982 const unsigned long *timing, unsigned long deadline,
983 bool *online, int (*check_ready)(struct ata_link *));
57c9efdf
TH		 984extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
985 unsigned long deadline);
203c75b8 986extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
2855568b 987
f3187195 988extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
f5cda257
TH		 989extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
990 const struct ata_port_info * const * ppi, int n_ports);
b1c72916 991extern int ata_slave_link_init(struct ata_port *ap);
ecef7253 992extern int ata_host_start(struct ata_host *host);
f3187195
TH		 993extern int ata_host_register(struct ata_host *host,
994 struct scsi_host_template *sht);
f5cda257
TH		 995extern int ata_host_activate(struct ata_host *host, int irq,
996 irq_handler_t irq_handler, unsigned long irq_flags,
997 struct scsi_host_template *sht);
0529c159 998extern void ata_host_detach(struct ata_host *host);
8d8e7d13 999extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *);
193515d5 1000extern int ata_scsi_detect(struct scsi_host_template *sht);
1da177e4 1001extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
f281233d 1002extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd);
94be9a58
JG		 1003extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev,
1004 int cmd, void __user *arg);
80289167 1005extern void ata_sas_port_destroy(struct ata_port *);
cca3974e 1006extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
80289167 1007 struct ata_port_info *, struct Scsi_Host *);
b2024459
DW		 1008extern void ata_sas_async_probe(struct ata_port *ap);
1009extern int ata_sas_sync_probe(struct ata_port *ap);
80289167
BK		 1010extern int ata_sas_port_init(struct ata_port *);
1011extern int ata_sas_port_start(struct ata_port *ap);
1012extern void ata_sas_port_stop(struct ata_port *ap);
1013extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
b27dcfb0 1014extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap);
936fd732
TH		 1015extern int sata_scr_valid(struct ata_link *link);
1016extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
1017extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
1018extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
b5b3fa38
TH		 1019extern bool ata_link_online(struct ata_link *link);
1020extern bool ata_link_offline(struct ata_link *link);
6ffa01d8 1021#ifdef CONFIG_PM
cca3974e
JG		 1022extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
1023extern void ata_host_resume(struct ata_host *host);
2fcbdcb4
DW		 1024extern int ata_sas_port_async_suspend(struct ata_port *ap, int *async);
1025extern int ata_sas_port_async_resume(struct ata_port *ap, int *async);
1026#else
1027static inline int ata_sas_port_async_suspend(struct ata_port *ap, int *async)
1028{
1029 return 0;
1030}
1031static inline int ata_sas_port_async_resume(struct ata_port *ap, int *async)
1032{
1033 return 0;
1034}
6ffa01d8 1035#endif
67846b30 1036extern int ata_ratelimit(void);
97750ceb
TH		 1037extern void ata_msleep(struct ata_port *ap, unsigned int msecs);
1038extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask,
1039 u32 val, unsigned long interval, unsigned long timeout);
436d34b3 1040extern int atapi_cmd_type(u8 opcode);
9977126c
TH		 1041extern void ata_tf_to_fis(const struct ata_taskfile *tf,
1042 u8 pmp, int is_cmd, u8 *fis);
057ace5e 1043extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
7dc951ae
TH		 1044extern unsigned long ata_pack_xfermask(unsigned long pio_mask,
1045 unsigned long mwdma_mask, unsigned long udma_mask);
1046extern void ata_unpack_xfermask(unsigned long xfer_mask,
1047 unsigned long *pio_mask, unsigned long *mwdma_mask,
1048 unsigned long *udma_mask);
1049extern u8 ata_xfer_mask2mode(unsigned long xfer_mask);
1050extern unsigned long ata_xfer_mode2mask(u8 xfer_mode);
1051extern int ata_xfer_mode2shift(unsigned long xfer_mode);
1052extern const char *ata_mode_string(unsigned long xfer_mask);
1053extern unsigned long ata_id_xfermask(const u16 *id);
31cc23b3 1054extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
e46834cd 1055extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);
1da177e4
LT		 1056extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
1057 unsigned int n_elem);
057ace5e 1058extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
10305f0f 1059extern void ata_dev_disable(struct ata_device *adev);
6a62a04d
TH		 1060extern void ata_id_string(const u16 *id, unsigned char *s,
1061 unsigned int ofs, unsigned int len);
1062extern void ata_id_c_string(const u16 *id, unsigned char *s,
1063 unsigned int ofs, unsigned int len);
963e4975
AC		 1064extern unsigned int ata_do_dev_read_id(struct ata_device *dev,
1065 struct ata_taskfile *tf, u16 *id);
f686bcb8 1066extern void ata_qc_complete(struct ata_queued_cmd *qc);
79f97dad 1067extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active);
b27dcfb0 1068extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd);
1da177e4
LT		 1069extern int ata_std_bios_param(struct scsi_device *sdev,
1070 struct block_device *bdev,
1071 sector_t capacity, int geom[]);
d8d9129e 1072extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
1da177e4 1073extern int ata_scsi_slave_config(struct scsi_device *sdev);
83c47bcb 1074extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
a6e6ce8e 1075extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
e881a172 1076 int queue_depth, int reason);
f6e67035
DW		 1077extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev,
1078 int queue_depth, int reason);
3373efd8 1079extern struct ata_device *ata_dev_pair(struct ata_device *adev);
0260731f 1080extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
0e0b494c
JB		 1081extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap);
1082extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q);
1da177e4 1083
be0d18df
AC		 1084extern int ata_cable_40wire(struct ata_port *ap);
1085extern int ata_cable_80wire(struct ata_port *ap);
1086extern int ata_cable_sata(struct ata_port *ap);
c88f90c3 1087extern int ata_cable_ignore(struct ata_port *ap);
be0d18df
AC		 1088extern int ata_cable_unknown(struct ata_port *ap);
1089
624d5c51 1090/* Timing helpers */
1bc4ccff 1091extern unsigned int ata_pio_need_iordy(const struct ata_device *);
6357357c 1092extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
452503f9
AC		 1093extern int ata_timing_compute(struct ata_device *, unsigned short,
1094 struct ata_timing *, int, int);
1095extern void ata_timing_merge(const struct ata_timing *,
1096 const struct ata_timing *, struct ata_timing *,
1097 unsigned int);
a0f79b92 1098extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);
452503f9 1099
624d5c51
TH		 1100/* PCI */
1101#ifdef CONFIG_PCI
1102struct pci_dev;
1103
1104struct pci_bits {
1105 unsigned int reg; /* PCI config register to read */
1106 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
1107 unsigned long mask;
1108 unsigned long val;
452503f9
AC		 1109};
1110
624d5c51
TH		 1111extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
1112extern void ata_pci_remove_one(struct pci_dev *pdev);
1113
1114#ifdef CONFIG_PM
1115extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
1116extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
1117extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
1118extern int ata_pci_device_resume(struct pci_dev *pdev);
1119#endif /* CONFIG_PM */
1120#endif /* CONFIG_PCI */
1121
b7db04d9
BN		 1122struct platform_device;
1123
1124extern int ata_platform_remove_one(struct platform_device *pdev);
1125
624d5c51
TH		 1126/*
1127 * ACPI - drivers/ata/libata-acpi.c
1128 */
e1ddb4b6 1129#ifdef CONFIG_ATA_ACPI
c05e6ff0
TH		 1130static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1131{
1132 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
1133 return &ap->__acpi_init_gtm;
1134 return NULL;
1135}
0d02f0b2
TH		 1136int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
1137int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
7c77fa4d
TH		 1138unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev,
1139 const struct ata_acpi_gtm *gtm);
30dcf76a
MG		 1140acpi_handle ata_ap_acpi_handle(struct ata_port *ap);
1141acpi_handle ata_dev_acpi_handle(struct ata_device *dev);
021ee9a6 1142int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm);
e1ddb4b6 1143#else
c05e6ff0
TH		 1144static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1145{
1146 return NULL;
1147}
7c77fa4d
TH		 1148
1149static inline int ata_acpi_stm(const struct ata_port *ap,
1150 struct ata_acpi_gtm *stm)
1151{
1152 return -ENOSYS;
1153}
1154
1155static inline int ata_acpi_gtm(const struct ata_port *ap,
1156 struct ata_acpi_gtm *stm)
1157{
1158 return -ENOSYS;
1159}
1160
1161static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
1162 const struct ata_acpi_gtm *gtm)
1163{
1164 return 0;
1165}
021ee9a6
TH		 1166
1167static inline int ata_acpi_cbl_80wire(struct ata_port *ap,
1168 const struct ata_acpi_gtm *gtm)
1169{
1170 return 0;
1171}
e1ddb4b6 1172#endif
1da177e4 1173
ece1d636 1174/*
624d5c51 1175 * EH - drivers/ata/libata-eh.c
ece1d636 1176 */
7b70fc03 1177extern void ata_port_schedule_eh(struct ata_port *ap);
81c757bc 1178extern void ata_port_wait_eh(struct ata_port *ap);
dbd82616 1179extern int ata_link_abort(struct ata_link *link);
7b70fc03 1180extern int ata_port_abort(struct ata_port *ap);
e3180499 1181extern int ata_port_freeze(struct ata_port *ap);
7d77b247 1182extern int sata_async_notification(struct ata_port *ap);
e3180499
TH		 1183
1184extern void ata_eh_freeze_port(struct ata_port *ap);
1185extern void ata_eh_thaw_port(struct ata_port *ap);
7b70fc03 1186
ece1d636
TH		 1187extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
1188extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
10acf3b0 1189extern void ata_eh_analyze_ncq_error(struct ata_link *link);
ece1d636 1190
f5914a46
TH		 1191extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
1192 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
1193 ata_postreset_fn_t postreset);
a1efdaba 1194extern void ata_std_error_handler(struct ata_port *ap);
e4a9c373
DW		 1195extern void ata_std_sched_eh(struct ata_port *ap);
1196extern void ata_std_end_eh(struct ata_port *ap);
8a745f1f 1197extern int ata_link_nr_enabled(struct ata_link *link);
022bdb07 1198
68d1d07b
TH		 1199/*
1200 * Base operations to inherit from and initializers for sht
1201 *
1202 * Operations
1203 *
1204 * base : Common to all libata drivers.
1205 * sata : SATA controllers w/ native interface.
1206 * pmp : SATA controllers w/ PMP support.
1207 * sff : SFF ATA controllers w/o BMDMA support.
1208 * bmdma : SFF ATA controllers w/ BMDMA support.
1209 *
1210 * sht initializers
1211 *
1212 * BASE : Common to all libata drivers. The user must set
1213 * sg_tablesize and dma_boundary.
1214 * PIO : SFF ATA controllers w/ only PIO support.
1215 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and
1216 * dma_boundary are set to BMDMA limits.
1217 * NCQ : SATA controllers supporting NCQ. The user must set
1218 * sg_tablesize, dma_boundary and can_queue.
1219 */
1220extern const struct ata_port_operations ata_base_port_ops;
1221extern const struct ata_port_operations sata_port_ops;
45fabbb7 1222extern struct device_attribute *ata_common_sdev_attrs[];
68d1d07b
TH		 1223
1224#define ATA_BASE_SHT(drv_name) \
1225 .module = THIS_MODULE, \
1226 .name = drv_name, \
1227 .ioctl = ata_scsi_ioctl, \
1228 .queuecommand = ata_scsi_queuecmd, \
1229 .can_queue = ATA_DEF_QUEUE, \
1230 .this_id = ATA_SHT_THIS_ID, \
1231 .cmd_per_lun = ATA_SHT_CMD_PER_LUN, \
1232 .emulated = ATA_SHT_EMULATED, \
1233 .use_clustering = ATA_SHT_USE_CLUSTERING, \
1234 .proc_name = drv_name, \
1235 .slave_configure = ata_scsi_slave_config, \
1236 .slave_destroy = ata_scsi_slave_destroy, \
45fabbb7 1237 .bios_param = ata_std_bios_param, \
d8d9129e 1238 .unlock_native_capacity = ata_scsi_unlock_native_capacity, \
45fabbb7 1239 .sdev_attrs = ata_common_sdev_attrs
68d1d07b 1240
68d1d07b
TH		 1241#define ATA_NCQ_SHT(drv_name) \
1242 ATA_BASE_SHT(drv_name), \
1243 .change_queue_depth = ata_scsi_change_queue_depth
1244
071f44b1
TH		 1245/*
1246 * PMP helpers
1247 */
88fcd562 1248#ifdef CONFIG_SATA_PMP
071f44b1
TH		 1249static inline bool sata_pmp_supported(struct ata_port *ap)
1250{
1251 return ap->flags & ATA_FLAG_PMP;
1252}
1253
1254static inline bool sata_pmp_attached(struct ata_port *ap)
1255{
1256 return ap->nr_pmp_links != 0;
1257}
1258
1259static inline int ata_is_host_link(const struct ata_link *link)
1260{
b1c72916 1261 return link == &link->ap->link || link == link->ap->slave_link;
071f44b1 1262}
88fcd562
TH		 1263#else /* CONFIG_SATA_PMP */
1264static inline bool sata_pmp_supported(struct ata_port *ap)
1265{
1266 return false;
1267}
1268
1269static inline bool sata_pmp_attached(struct ata_port *ap)
1270{
1271 return false;
1272}
1273
1274static inline int ata_is_host_link(const struct ata_link *link)
1275{
1276 return 1;
1277}
1278#endif /* CONFIG_SATA_PMP */
071f44b1
TH		 1279
1280static inline int sata_srst_pmp(struct ata_link *link)
1281{
1282 if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
1283 return SATA_PMP_CTRL_PORT;
1284 return link->pmp;
1285}
1286
61440db6
TH		 1287/*
1288 * printk helpers
1289 */
b9075fa9 1290__printf(3, 4)
a9a79dfe
JP		 1291int ata_port_printk(const struct ata_port *ap, const char *level,
1292 const char *fmt, ...);
b9075fa9 1293__printf(3, 4)
a9a79dfe
JP		 1294int ata_link_printk(const struct ata_link *link, const char *level,
1295 const char *fmt, ...);
b9075fa9 1296__printf(3, 4)
a9a79dfe
JP		 1297int ata_dev_printk(const struct ata_device *dev, const char *level,
1298 const char *fmt, ...);
1299
1300#define ata_port_err(ap, fmt, ...) \
1301 ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__)
1302#define ata_port_warn(ap, fmt, ...) \
1303 ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__)
1304#define ata_port_notice(ap, fmt, ...) \
1305 ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__)
1306#define ata_port_info(ap, fmt, ...) \
1307 ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__)
1308#define ata_port_dbg(ap, fmt, ...) \
1309 ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__)
1310
1311#define ata_link_err(link, fmt, ...) \
1312 ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__)
1313#define ata_link_warn(link, fmt, ...) \
1314 ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__)
1315#define ata_link_notice(link, fmt, ...) \
1316 ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__)
1317#define ata_link_info(link, fmt, ...) \
1318 ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__)
1319#define ata_link_dbg(link, fmt, ...) \
1320 ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__)
1321
1322#define ata_dev_err(dev, fmt, ...) \
1323 ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__)
1324#define ata_dev_warn(dev, fmt, ...) \
1325 ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__)
1326#define ata_dev_notice(dev, fmt, ...) \
1327 ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__)
1328#define ata_dev_info(dev, fmt, ...) \
1329 ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__)
1330#define ata_dev_dbg(dev, fmt, ...) \
1331 ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__)
1da177e4 1332
06296a1e
JP		 1333void ata_print_version(const struct device *dev, const char *version);
1334
f3e81b19
TH		 1335/*
1336 * ata_eh_info helpers
1337 */
b9075fa9
JP		 1338extern __printf(2, 3)
1339void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1340extern __printf(2, 3)
1341void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
b64bbc39 1342extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
f3e81b19 1343
c0b6c037
TH		 1344static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
1345{
b558eddd 1346 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
f8f1e1cc 1347 ehi->flags |= ATA_EHI_HOTPLUGGED;
b558eddd 1348 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;
c0b6c037
TH		 1349 ehi->err_mask |= AC_ERR_ATA_BUS;
1350}
1351
cbcdd875
TH		 1352/*
1353 * port description helpers
1354 */
b9075fa9
JP		 1355extern __printf(2, 3)
1356void ata_port_desc(struct ata_port *ap, const char *fmt, ...);
cbcdd875
TH		 1357#ifdef CONFIG_PCI
1358extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
1359 const char *name);
1360#endif
1361
1da177e4
LT		 1362static inline unsigned int ata_tag_valid(unsigned int tag)
1363{
1364 return (tag < ATA_MAX_QUEUE) ? 1 : 0;
1365}
1366
2ab7db1f
TH		 1367static inline unsigned int ata_tag_internal(unsigned int tag)
1368{
83c063dd 1369 return tag == ATA_TAG_INTERNAL;
2ab7db1f
TH		 1370}
1371
5806db22
TH		 1372/*
1373 * device helpers
1374 */
e1211e3f 1375static inline unsigned int ata_class_enabled(unsigned int class)
597afd21 1376{
e0a71752
TH		 1377 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
1378 class == ATA_DEV_PMP || class == ATA_DEV_SEMB;
597afd21
TH		 1379}
1380
e1211e3f 1381static inline unsigned int ata_class_disabled(unsigned int class)
1da177e4 1382{
e0a71752
TH		 1383 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
1384 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP;
e1211e3f
TH		 1385}
1386
002c8054
TH		 1387static inline unsigned int ata_class_absent(unsigned int class)
1388{
1389 return !ata_class_enabled(class) && !ata_class_disabled(class);
1390}
1391
e1211e3f
TH		 1392static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
1393{
1394 return ata_class_enabled(dev->class);
1395}
1396
1397static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
1398{
1399 return ata_class_disabled(dev->class);
1da177e4
LT		 1400}
1401
002c8054
TH		 1402static inline unsigned int ata_dev_absent(const struct ata_device *dev)
1403{
1404 return ata_class_absent(dev->class);
1405}
1406
5806db22 1407/*
f58229f8 1408 * link helpers
5806db22 1409 */
f58229f8 1410static inline int ata_link_max_devices(const struct ata_link *link)
5806db22 1411{
8989805d 1412 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS)
5806db22
TH		 1413 return 2;
1414 return 1;
1415}
1416
da917d69
TH		 1417static inline int ata_link_active(struct ata_link *link)
1418{
1419 return ata_tag_valid(link->active_tag) || link->sactive;
1420}
1421
1eca4365
TH		 1422/*
1423 * Iterators
1424 *
1425 * ATA_LITER_* constants are used to select link iteration mode and
1426 * ATA_DITER_* device iteration mode.
1427 *
1428 * For a custom iteration directly using ata_{link|dev}_next(), if
1429 * @link or @dev, respectively, is NULL, the first element is
1430 * returned. @dev and @link can be any valid device or link and the
1431 * next element according to the iteration mode will be returned.
1432 * After the last element, NULL is returned.
1433 */
1434enum ata_link_iter_mode {
1435 ATA_LITER_EDGE, /* if present, PMP links only; otherwise,
1436 * host link. no slave link */
1437 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */
1438 ATA_LITER_PMP_FIRST, /* PMP links followed by host link,
1439 * slave link still comes after host link */
1440};
1441
1442enum ata_dev_iter_mode {
1443 ATA_DITER_ENABLED,
1444 ATA_DITER_ENABLED_REVERSE,
1445 ATA_DITER_ALL,
1446 ATA_DITER_ALL_REVERSE,
1447};
1448
1449extern struct ata_link *ata_link_next(struct ata_link *link,
1450 struct ata_port *ap,
1451 enum ata_link_iter_mode mode);
1452
1453extern struct ata_device *ata_dev_next(struct ata_device *dev,
1454 struct ata_link *link,
1455 enum ata_dev_iter_mode mode);
1456
1457/*
1458 * Shortcut notation for iterations
1459 *
1460 * ata_for_each_link() iterates over each link of @ap according to
1461 * @mode. @link points to the current link in the loop. @link is
1462 * NULL after loop termination. ata_for_each_dev() works the same way
1463 * except that it iterates over each device of @link.
1464 *
1465 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be
1466 * specified when using the following shorthand notations. Only the
1467 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be
1468 * specified. This not only increases brevity but also makes it
1469 * impossible to use ATA_LITER_* for device iteration or vice-versa.
1470 */
1471#define ata_for_each_link(link, ap, mode) \
1472 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1473 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1474
1475#define ata_for_each_dev(dev, link, mode) \
1476 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1477 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
5806db22 1478
6d1245bf
TH		 1479/**
1480 * ata_ncq_enabled - Test whether NCQ is enabled
1481 * @dev: ATA device to test for
1482 *
1483 * LOCKING:
1484 * spin_lock_irqsave(host lock)
1485 *
1486 * RETURNS:
1487 * 1 if NCQ is enabled for @dev, 0 otherwise.
1488 */
1489static inline int ata_ncq_enabled(struct ata_device *dev)
1490{
1491 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF |
1492 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
1493}
0baab86b 1494
1da177e4
LT		 1495static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
1496{
1497 qc->tf.ctl |= ATA_NIEN;
1498}
1499
f69499f4
TH		 1500static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
1501 unsigned int tag)
1da177e4
LT		 1502{
1503 if (likely(ata_tag_valid(tag)))
1504 return &ap->qcmd[tag];
1505 return NULL;
1506}
1507
f69499f4
TH		 1508static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
1509 unsigned int tag)
1510{
1511 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
1512
1513 if (unlikely(!qc) || !ap->ops->error_handler)
1514 return qc;
1515
1516 if ((qc->flags & (ATA_QCFLAG_ACTIVE |
1517 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE)
1518 return qc;
1519
1520 return NULL;
1521}
1522
aacda375
TH		 1523static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc)
1524{
1525 return qc->nbytes - min(qc->extrabytes, qc->nbytes);
1526}
1527
3373efd8 1528static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
1da177e4
LT		 1529{
1530 memset(tf, 0, sizeof(*tf));
1531
5fe7454a 1532#ifdef CONFIG_ATA_SFF
9af5c9c9 1533 tf->ctl = dev->link->ap->ctl;
5fe7454a
TH		 1534#else
1535 tf->ctl = ATA_DEVCTL_OBS;
1536#endif
3373efd8 1537 if (dev->devno == 0)
1da177e4
LT		 1538 tf->device = ATA_DEVICE_OBS;
1539 else
1540 tf->device = ATA_DEVICE_OBS | ATA_DEV1;
1541}
1542
2c13b7ce
JG		 1543static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
1544{
501e0c50 1545 qc->dma_dir = DMA_NONE;
ff2aeb1e 1546 qc->sg = NULL;
2c13b7ce 1547 qc->flags = 0;
87260216
JA		 1548 qc->cursg = NULL;
1549 qc->cursg_ofs = 0;
aacda375 1550 qc->nbytes = qc->extrabytes = qc->curbytes = 0;
7a801184 1551 qc->n_elem = 0;
a22e2eb0 1552 qc->err_mask = 0;
5a5dbd18 1553 qc->sect_size = ATA_SECT_SIZE;
2c13b7ce 1554
3373efd8 1555 ata_tf_init(qc->dev, &qc->tf);
e61e0672
TH		 1556
1557 /* init result_tf such that it indicates normal completion */
1558 qc->result_tf.command = ATA_DRDY;
1559 qc->result_tf.feature = 0;
2c13b7ce
JG		 1560}
1561
057ace5e 1562static inline int ata_try_flush_cache(const struct ata_device *dev)
1da177e4
LT		 1563{
1564 return ata_id_wcache_enabled(dev->id) ||
1565 ata_id_has_flush(dev->id) ||
1566 ata_id_has_flush_ext(dev->id);
1567}
1568
a7dac447
JG		 1569static inline unsigned int ac_err_mask(u8 status)
1570{
3655d1d3 1571 if (status & (ATA_BUSY | ATA_DRQ))
11a56d24 1572 return AC_ERR_HSM;
a7dac447
JG		 1573 if (status & (ATA_ERR | ATA_DF))
1574 return AC_ERR_DEV;
1575 return 0;
1576}
1577
1578static inline unsigned int __ac_err_mask(u8 status)
1579{
1580 unsigned int mask = ac_err_mask(status);
1581 if (mask == 0)
1582 return AC_ERR_OTHER;
1583 return mask;
1584}
1585
35bb94b1
JG		 1586static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
1587{
4911487a 1588 return *(struct ata_port **)&host->hostdata[0];
35bb94b1
JG		 1589}
1590
78ab88f0
TH		 1591static inline int ata_check_ready(u8 status)
1592{
005b1f74
JG		 1593 if (!(status & ATA_BUSY))
1594 return 1;
78ab88f0
TH		 1595
1596 /* 0xff indicates either no device or device not ready */
1597 if (status == 0xff)
1598 return -ENODEV;
1599
005b1f74 1600 return 0;
78ab88f0
TH		 1601}
1602
341c2c95
TH		 1603static inline unsigned long ata_deadline(unsigned long from_jiffies,
1604 unsigned long timeout_msecs)
1605{
1606 return from_jiffies + msecs_to_jiffies(timeout_msecs);
1607}
1608
b15b3eba
AC		 1609/* Don't open code these in drivers as there are traps. Firstly the range may
1610 change in future hardware and specs, secondly 0xFF means 'no DMA' but is
1611 > UDMA_0. Dyma ddreigiau */
1612
1613static inline int ata_using_mwdma(struct ata_device *adev)
1614{
1615 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4)
1616 return 1;
1617 return 0;
1618}
1619
1620static inline int ata_using_udma(struct ata_device *adev)
1621{
1622 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7)
1623 return 1;
1624 return 0;
1625}
1626
1627static inline int ata_dma_enabled(struct ata_device *adev)
1628{
1629 return (adev->dma_mode == 0xFF ? 0 : 1);
1630}
48515f6c
TH		 1631
1632/**************************************************************************
1633 * PMP - drivers/ata/libata-pmp.c
1634 */
88fcd562
TH		 1635#ifdef CONFIG_SATA_PMP
1636
48515f6c
TH		 1637extern const struct ata_port_operations sata_pmp_port_ops;
1638
1639extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
1640extern void sata_pmp_error_handler(struct ata_port *ap);
1641
88fcd562
TH		 1642#else /* CONFIG_SATA_PMP */
1643
1644#define sata_pmp_port_ops sata_port_ops
1645#define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1646#define sata_pmp_error_handler ata_std_error_handler
1647
1648#endif /* CONFIG_SATA_PMP */
1649
48515f6c 1650
624d5c51
TH		 1651/**************************************************************************
1652 * SFF - drivers/ata/libata-sff.c
1653 */
127102ae
TH		 1654#ifdef CONFIG_ATA_SFF
1655
624d5c51 1656extern const struct ata_port_operations ata_sff_port_ops;
871af121 1657extern const struct ata_port_operations ata_bmdma32_port_ops;
624d5c51
TH		 1658
1659/* PIO only, sg_tablesize and dma_boundary limits can be removed */
1660#define ATA_PIO_SHT(drv_name) \
1661 ATA_BASE_SHT(drv_name), \
1662 .sg_tablesize = LIBATA_MAX_PRD, \
1663 .dma_boundary = ATA_DMA_BOUNDARY
1664
9363c382
TH		 1665extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
1666extern u8 ata_sff_check_status(struct ata_port *ap);
a57c1bad
AC		 1667extern void ata_sff_pause(struct ata_port *ap);
1668extern void ata_sff_dma_pause(struct ata_port *ap);
9363c382
TH		 1669extern int ata_sff_busy_sleep(struct ata_port *ap,
1670 unsigned long timeout_pat, unsigned long timeout);
705e76be 1671extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline);
9363c382
TH		 1672extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
1673extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
1674extern void ata_sff_exec_command(struct ata_port *ap,
1675 const struct ata_taskfile *tf);
1676extern unsigned int ata_sff_data_xfer(struct ata_device *dev,
624d5c51 1677 unsigned char *buf, unsigned int buflen, int rw);
871af121
AC		 1678extern unsigned int ata_sff_data_xfer32(struct ata_device *dev,
1679 unsigned char *buf, unsigned int buflen, int rw);
9363c382 1680extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev,
624d5c51 1681 unsigned char *buf, unsigned int buflen, int rw);
e42a542b 1682extern void ata_sff_irq_on(struct ata_port *ap);
9363c382
TH		 1683extern void ata_sff_irq_clear(struct ata_port *ap);
1684extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
1685 u8 status, int in_wq);
64b97594
VK		 1686extern void ata_sff_queue_work(struct work_struct *work);
1687extern void ata_sff_queue_delayed_work(struct delayed_work *dwork,
1688 unsigned long delay);
ea3c6450 1689extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay);
9363c382 1690extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
22183bf5 1691extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
c3b28894 1692extern unsigned int ata_sff_port_intr(struct ata_port *ap,
9363c382
TH		 1693 struct ata_queued_cmd *qc);
1694extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
c96f1732 1695extern void ata_sff_lost_interrupt(struct ata_port *ap);
9363c382
TH		 1696extern void ata_sff_freeze(struct ata_port *ap);
1697extern void ata_sff_thaw(struct ata_port *ap);
1698extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
1699extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
1700 u8 *r_err);
705e76be
TH		 1701extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
1702 unsigned long deadline);
9363c382 1703extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
624d5c51 1704 unsigned long deadline);
9363c382
TH		 1705extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
1706 unsigned long deadline);
1707extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
3d47aa8e 1708extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
9363c382 1709extern void ata_sff_error_handler(struct ata_port *ap);
9363c382 1710extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
624d5c51 1711#ifdef CONFIG_PCI
9363c382
TH		 1712extern int ata_pci_sff_init_host(struct ata_host *host);
1713extern int ata_pci_sff_prepare_host(struct pci_dev *pdev,
624d5c51
TH		 1714 const struct ata_port_info * const * ppi,
1715 struct ata_host **r_host);
9363c382 1716extern int ata_pci_sff_activate_host(struct ata_host *host,
624d5c51
TH		 1717 irq_handler_t irq_handler,
1718 struct scsi_host_template *sht);
9363c382 1719extern int ata_pci_sff_init_one(struct pci_dev *pdev,
16ea0fc9
AC		 1720 const struct ata_port_info * const * ppi,
1721 struct scsi_host_template *sht, void *host_priv, int hflags);
624d5c51
TH		 1722#endif /* CONFIG_PCI */
1723
9a7780c9
TH		 1724#ifdef CONFIG_ATA_BMDMA
1725
1726extern const struct ata_port_operations ata_bmdma_port_ops;
1727
1728#define ATA_BMDMA_SHT(drv_name) \
1729 ATA_BASE_SHT(drv_name), \
1730 .sg_tablesize = LIBATA_MAX_PRD, \
1731 .dma_boundary = ATA_DMA_BOUNDARY
1732
f47451c4 1733extern void ata_bmdma_qc_prep(struct ata_queued_cmd *qc);
360ff783 1734extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc);
f47451c4 1735extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc);
c3b28894
TH		 1736extern unsigned int ata_bmdma_port_intr(struct ata_port *ap,
1737 struct ata_queued_cmd *qc);
1738extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance);
fe06e5f9
TH		 1739extern void ata_bmdma_error_handler(struct ata_port *ap);
1740extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
37f65b8b 1741extern void ata_bmdma_irq_clear(struct ata_port *ap);
9f2f7210
TH		 1742extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
1743extern void ata_bmdma_start(struct ata_queued_cmd *qc);
1744extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
1745extern u8 ata_bmdma_status(struct ata_port *ap);
c7087652
TH		 1746extern int ata_bmdma_port_start(struct ata_port *ap);
1747extern int ata_bmdma_port_start32(struct ata_port *ap);
9f2f7210
TH		 1748
1749#ifdef CONFIG_PCI
1750extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
c7087652 1751extern void ata_pci_bmdma_init(struct ata_host *host);
1c5afdf7
TH		 1752extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev,
1753 const struct ata_port_info * const * ppi,
1754 struct ata_host **r_host);
1755extern int ata_pci_bmdma_init_one(struct pci_dev *pdev,
1756 const struct ata_port_info * const * ppi,
1757 struct scsi_host_template *sht,
1758 void *host_priv, int hflags);
9f2f7210 1759#endif /* CONFIG_PCI */
9a7780c9 1760#endif /* CONFIG_ATA_BMDMA */
9f2f7210 1761
624d5c51 1762/**
9363c382 1763 * ata_sff_busy_wait - Wait for a port status register
624d5c51
TH		 1764 * @ap: Port to wait for.
1765 * @bits: bits that must be clear
1766 * @max: number of 10uS waits to perform
1767 *
1768 * Waits up to max*10 microseconds for the selected bits in the port's
1769 * status register to be cleared.
1770 * Returns final value of status register.
1771 *
1772 * LOCKING:
1773 * Inherited from caller.
1774 */
9363c382
TH		 1775static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits,
1776 unsigned int max)
624d5c51
TH		 1777{
1778 u8 status;
1779
1780 do {
1781 udelay(10);
5682ed33 1782 status = ap->ops->sff_check_status(ap);
624d5c51
TH		 1783 max--;
1784 } while (status != 0xff && (status & bits) && (max > 0));
1785
1786 return status;
1787}
1788
1789/**
1790 * ata_wait_idle - Wait for a port to be idle.
1791 * @ap: Port to wait for.
1792 *
1793 * Waits up to 10ms for port's BUSY and DRQ signals to clear.
1794 * Returns final value of status register.
1795 *
1796 * LOCKING:
1797 * Inherited from caller.
1798 */
1799static inline u8 ata_wait_idle(struct ata_port *ap)
1800{
9363c382 1801 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
624d5c51
TH		 1802
1803#ifdef ATA_DEBUG
1804 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
1805 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n",
1806 status);
1807#endif
1808
1809 return status;
1810}
127102ae 1811#endif /* CONFIG_ATA_SFF */
624d5c51 1812
1da177e4 1813#endif /* __LINUX_LIBATA_H__ */
Linux 6.x block layer and io_uring tree(s)