libata.h revision b2024459252a9d2d312ee562f86f332a1498f412
1/* 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 * 24 */ 25 26#ifndef __LINUX_LIBATA_H__ 27#define __LINUX_LIBATA_H__ 28 29#include <linux/delay.h> 30#include <linux/jiffies.h> 31#include <linux/interrupt.h> 32#include <linux/dma-mapping.h> 33#include <linux/scatterlist.h> 34#include <linux/io.h> 35#include <linux/ata.h> 36#include <linux/workqueue.h> 37#include <scsi/scsi_host.h> 38#include <linux/acpi.h> 39#include <linux/cdrom.h> 40#include <linux/sched.h> 41 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 47#include <asm/libata-portmap.h> 48#else 49#include <asm-generic/libata-portmap.h> 50#endif 51 52/* 53 * compile-time options: to be removed as soon as all the drivers are 54 * converted to the new debugging mechanism 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 */ 60 61 62/* note: prints function name for you */ 63#ifdef ATA_DEBUG 64#define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) 65#ifdef ATA_VERBOSE_DEBUG 66#define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) 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 75#define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args) 76 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 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} 118 119/* defines only for the constants which don't work well as enums */ 120#define ATA_TAG_POISON 0xfafbfcfdU 121 122enum { 123 /* various global constants */ 124 LIBATA_MAX_PRD = ATA_MAX_PRD / 2, 125 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */ 126 ATA_DEF_QUEUE = 1, 127 /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */ 128 ATA_MAX_QUEUE = 32, 129 ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1, 130 ATA_SHORT_PAUSE = 16, 131 132 ATAPI_MAX_DRAIN = 16 << 10, 133 134 ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1, 135 136 ATA_SHT_EMULATED = 1, 137 ATA_SHT_CMD_PER_LUN = 1, 138 ATA_SHT_THIS_ID = -1, 139 ATA_SHT_USE_CLUSTERING = 1, 140 141 /* struct ata_device stuff */ 142 ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */ 143 ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */ 144 ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */ 145 ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */ 146 ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */ 147 ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ 148 ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ 149 ATA_DFLAG_AN = (1 << 7), /* AN configured */ 150 ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */ 151 ATA_DFLAG_CFG_MASK = (1 << 12) - 1, 152 153 ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */ 154 ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */ 155 ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */ 156 ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */ 157 ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */ 158 ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */ 159 ATA_DFLAG_INIT_MASK = (1 << 24) - 1, 160 161 ATA_DFLAG_DETACH = (1 << 24), 162 ATA_DFLAG_DETACHED = (1 << 25), 163 164 ATA_DEV_UNKNOWN = 0, /* unknown device */ 165 ATA_DEV_ATA = 1, /* ATA device */ 166 ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ 167 ATA_DEV_ATAPI = 3, /* ATAPI device */ 168 ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ 169 ATA_DEV_PMP = 5, /* SATA port multiplier */ 170 ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ 171 ATA_DEV_SEMB = 7, /* SEMB */ 172 ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ 173 ATA_DEV_NONE = 9, /* no device */ 174 175 /* struct ata_link flags */ 176 ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */ 177 ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ 178 ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ 179 ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ 180 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, 181 ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ 182 ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ 183 ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */ 184 ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */ 185 186 /* struct ata_port flags */ 187 ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ 188 /* (doesn't imply presence) */ 189 ATA_FLAG_SATA = (1 << 1), 190 ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ 191 ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ 192 ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ 193 ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD 194 * doesn't handle PIO interrupts */ 195 ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ 196 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */ 197 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */ 198 ATA_FLAG_DEBUGMSG = (1 << 13), 199 ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */ 200 ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ 201 ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ 202 ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ 203 ATA_FLAG_AN = (1 << 18), /* controller supports AN */ 204 ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ 205 ATA_FLAG_EM = (1 << 21), /* driver supports enclosure 206 * management */ 207 ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity 208 * led */ 209 ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */ 210 211 /* bits 24:31 of ap->flags are reserved for LLD specific flags */ 212 213 214 /* struct ata_port pflags */ 215 ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ 216 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ 217 ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ 218 ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ 219 ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ 220 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ 221 ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ 222 ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ 223 ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */ 224 ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */ 225 226 ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ 227 ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ 228 ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */ 229 230 ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */ 231 ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */ 232 233 /* struct ata_queued_cmd flags */ 234 ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ 235 ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */ 236 ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ 237 ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ 238 ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ 239 ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */ 240 ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */ 241 242 ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */ 243 ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ 244 ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ 245 246 /* host set flags */ 247 ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ 248 ATA_HOST_STARTED = (1 << 1), /* Host started */ 249 ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */ 250 251 /* bits 24:31 of host->flags are reserved for LLD specific flags */ 252 253 /* various lengths of time */ 254 ATA_TMOUT_BOOT = 30000, /* heuristic */ 255 ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */ 256 ATA_TMOUT_INTERNAL_QUICK = 5000, 257 ATA_TMOUT_MAX_PARK = 30000, 258 259 /* 260 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s 261 * is too much without parallel probing. Use 2s if parallel 262 * probing is available, 800ms otherwise. 263 */ 264 ATA_TMOUT_FF_WAIT_LONG = 2000, 265 ATA_TMOUT_FF_WAIT = 800, 266 267 /* Spec mandates to wait for ">= 2ms" before checking status 268 * after reset. We wait 150ms, because that was the magic 269 * delay used for ATAPI devices in Hale Landis's ATADRVR, for 270 * the period of time between when the ATA command register is 271 * written, and then status is checked. Because waiting for 272 * "a while" before checking status is fine, post SRST, we 273 * perform this magic delay here as well. 274 * 275 * Old drivers/ide uses the 2mS rule and then waits for ready. 276 */ 277 ATA_WAIT_AFTER_RESET = 150, 278 279 /* If PMP is supported, we have to do follow-up SRST. As some 280 * PMPs don't send D2H Reg FIS after hardreset, LLDs are 281 * advised to wait only for the following duration before 282 * doing SRST. 283 */ 284 ATA_TMOUT_PMP_SRST_WAIT = 5000, 285 286 /* ATA bus states */ 287 BUS_UNKNOWN = 0, 288 BUS_DMA = 1, 289 BUS_IDLE = 2, 290 BUS_NOINTR = 3, 291 BUS_NODATA = 4, 292 BUS_TIMER = 5, 293 BUS_PIO = 6, 294 BUS_EDD = 7, 295 BUS_IDENTIFY = 8, 296 BUS_PACKET = 9, 297 298 /* SATA port states */ 299 PORT_UNKNOWN = 0, 300 PORT_ENABLED = 1, 301 PORT_DISABLED = 2, 302 303 /* encoding various smaller bitmaps into a single 304 * unsigned long bitmap 305 */ 306 ATA_NR_PIO_MODES = 7, 307 ATA_NR_MWDMA_MODES = 5, 308 ATA_NR_UDMA_MODES = 8, 309 310 ATA_SHIFT_PIO = 0, 311 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES, 312 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES, 313 314 /* size of buffer to pad xfers ending on unaligned boundaries */ 315 ATA_DMA_PAD_SZ = 4, 316 317 /* ering size */ 318 ATA_ERING_SIZE = 32, 319 320 /* return values for ->qc_defer */ 321 ATA_DEFER_LINK = 1, 322 ATA_DEFER_PORT = 2, 323 324 /* desc_len for ata_eh_info and context */ 325 ATA_EH_DESC_LEN = 80, 326 327 /* reset / recovery action types */ 328 ATA_EH_REVALIDATE = (1 << 0), 329 ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */ 330 ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */ 331 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, 332 ATA_EH_ENABLE_LINK = (1 << 3), 333 ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */ 334 335 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK, 336 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET | 337 ATA_EH_ENABLE_LINK, 338 339 /* ata_eh_info->flags */ 340 ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ 341 ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ 342 ATA_EHI_QUIET = (1 << 3), /* be quiet */ 343 ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */ 344 345 ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ 346 ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ 347 ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ 348 ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ 349 ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */ 350 351 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, 352 353 /* mask of flags to transfer *to* the slave link */ 354 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, 355 356 /* max tries if error condition is still set after ->error_handler */ 357 ATA_EH_MAX_TRIES = 5, 358 359 /* sometimes resuming a link requires several retries */ 360 ATA_LINK_RESUME_TRIES = 5, 361 362 /* how hard are we gonna try to probe/recover devices */ 363 ATA_PROBE_MAX_TRIES = 3, 364 ATA_EH_DEV_TRIES = 3, 365 ATA_EH_PMP_TRIES = 5, 366 ATA_EH_PMP_LINK_TRIES = 3, 367 368 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */ 369 370 /* This should match the actual table size of 371 * ata_eh_cmd_timeout_table in libata-eh.c. 372 */ 373 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6, 374 375 /* Horkage types. May be set by libata or controller on drives 376 (some horkage may be drive/controller pair dependent */ 377 378 ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ 379 ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ 380 ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ 381 ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ 382 ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ 383 ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */ 384 ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ 385 ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */ 386 ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */ 387 ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */ 388 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands 389 not multiple of 16 bytes */ 390 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */ 391 ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */ 392 ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */ 393 ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */ 394 ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */ 395 396 /* DMA mask for user DMA control: User visible values; DO NOT 397 renumber */ 398 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ 399 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ 400 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ 401 402 /* ATAPI command types */ 403 ATAPI_READ = 0, /* READs */ 404 ATAPI_WRITE = 1, /* WRITEs */ 405 ATAPI_READ_CD = 2, /* READ CD [MSF] */ 406 ATAPI_PASS_THRU = 3, /* SAT pass-thru */ 407 ATAPI_MISC = 4, /* the rest */ 408 409 /* Timing constants */ 410 ATA_TIMING_SETUP = (1 << 0), 411 ATA_TIMING_ACT8B = (1 << 1), 412 ATA_TIMING_REC8B = (1 << 2), 413 ATA_TIMING_CYC8B = (1 << 3), 414 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | 415 ATA_TIMING_CYC8B, 416 ATA_TIMING_ACTIVE = (1 << 4), 417 ATA_TIMING_RECOVER = (1 << 5), 418 ATA_TIMING_DMACK_HOLD = (1 << 6), 419 ATA_TIMING_CYCLE = (1 << 7), 420 ATA_TIMING_UDMA = (1 << 8), 421 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | 422 ATA_TIMING_REC8B | ATA_TIMING_CYC8B | 423 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | 424 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE | 425 ATA_TIMING_UDMA, 426 427 /* ACPI constants */ 428 ATA_ACPI_FILTER_SETXFER = 1 << 0, 429 ATA_ACPI_FILTER_LOCK = 1 << 1, 430 ATA_ACPI_FILTER_DIPM = 1 << 2, 431 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */ 432 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */ 433 434 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER | 435 ATA_ACPI_FILTER_LOCK | 436 ATA_ACPI_FILTER_DIPM, 437}; 438 439enum ata_xfer_mask { 440 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1) 441 << ATA_SHIFT_PIO, 442 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1) 443 << ATA_SHIFT_MWDMA, 444 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1) 445 << ATA_SHIFT_UDMA, 446}; 447 448enum hsm_task_states { 449 HSM_ST_IDLE, /* no command on going */ 450 HSM_ST_FIRST, /* (waiting the device to) 451 write CDB or first data block */ 452 HSM_ST, /* (waiting the device to) transfer data */ 453 HSM_ST_LAST, /* (waiting the device to) complete command */ 454 HSM_ST_ERR, /* error */ 455}; 456 457enum ata_completion_errors { 458 AC_ERR_DEV = (1 << 0), /* device reported error */ 459 AC_ERR_HSM = (1 << 1), /* host state machine violation */ 460 AC_ERR_TIMEOUT = (1 << 2), /* timeout */ 461 AC_ERR_MEDIA = (1 << 3), /* media error */ 462 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ 463 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ 464 AC_ERR_SYSTEM = (1 << 6), /* system error */ 465 AC_ERR_INVALID = (1 << 7), /* invalid argument */ 466 AC_ERR_OTHER = (1 << 8), /* unknown */ 467 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ 468 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ 469}; 470 471/* 472 * Link power management policy: If you alter this, you also need to 473 * alter libata-scsi.c (for the ascii descriptions) 474 */ 475enum ata_lpm_policy { 476 ATA_LPM_UNKNOWN, 477 ATA_LPM_MAX_POWER, 478 ATA_LPM_MED_POWER, 479 ATA_LPM_MIN_POWER, 480}; 481 482enum ata_lpm_hints { 483 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */ 484 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */ 485}; 486 487/* forward declarations */ 488struct scsi_device; 489struct ata_port_operations; 490struct ata_port; 491struct ata_link; 492struct ata_queued_cmd; 493 494/* typedefs */ 495typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); 496typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); 497typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, 498 unsigned long deadline); 499typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); 500 501extern struct device_attribute dev_attr_link_power_management_policy; 502extern struct device_attribute dev_attr_unload_heads; 503extern struct device_attribute dev_attr_em_message_type; 504extern struct device_attribute dev_attr_em_message; 505extern struct device_attribute dev_attr_sw_activity; 506 507enum sw_activity { 508 OFF, 509 BLINK_ON, 510 BLINK_OFF, 511}; 512 513#ifdef CONFIG_ATA_SFF 514struct ata_ioports { 515 void __iomem *cmd_addr; 516 void __iomem *data_addr; 517 void __iomem *error_addr; 518 void __iomem *feature_addr; 519 void __iomem *nsect_addr; 520 void __iomem *lbal_addr; 521 void __iomem *lbam_addr; 522 void __iomem *lbah_addr; 523 void __iomem *device_addr; 524 void __iomem *status_addr; 525 void __iomem *command_addr; 526 void __iomem *altstatus_addr; 527 void __iomem *ctl_addr; 528#ifdef CONFIG_ATA_BMDMA 529 void __iomem *bmdma_addr; 530#endif /* CONFIG_ATA_BMDMA */ 531 void __iomem *scr_addr; 532}; 533#endif /* CONFIG_ATA_SFF */ 534 535struct ata_host { 536 spinlock_t lock; 537 struct device *dev; 538 void __iomem * const *iomap; 539 unsigned int n_ports; 540 void *private_data; 541 struct ata_port_operations *ops; 542 unsigned long flags; 543 544 struct mutex eh_mutex; 545 struct task_struct *eh_owner; 546 547#ifdef CONFIG_ATA_ACPI 548 acpi_handle acpi_handle; 549#endif 550 struct ata_port *simplex_claimed; /* channel owning the DMA */ 551 struct ata_port *ports[0]; 552}; 553 554struct ata_queued_cmd { 555 struct ata_port *ap; 556 struct ata_device *dev; 557 558 struct scsi_cmnd *scsicmd; 559 void (*scsidone)(struct scsi_cmnd *); 560 561 struct ata_taskfile tf; 562 u8 cdb[ATAPI_CDB_LEN]; 563 564 unsigned long flags; /* ATA_QCFLAG_xxx */ 565 unsigned int tag; 566 unsigned int n_elem; 567 unsigned int orig_n_elem; 568 569 int dma_dir; 570 571 unsigned int sect_size; 572 573 unsigned int nbytes; 574 unsigned int extrabytes; 575 unsigned int curbytes; 576 577 struct scatterlist sgent; 578 579 struct scatterlist *sg; 580 581 struct scatterlist *cursg; 582 unsigned int cursg_ofs; 583 584 unsigned int err_mask; 585 struct ata_taskfile result_tf; 586 ata_qc_cb_t complete_fn; 587 588 void *private_data; 589 void *lldd_task; 590}; 591 592struct ata_port_stats { 593 unsigned long unhandled_irq; 594 unsigned long idle_irq; 595 unsigned long rw_reqbuf; 596}; 597 598struct ata_ering_entry { 599 unsigned int eflags; 600 unsigned int err_mask; 601 u64 timestamp; 602}; 603 604struct ata_ering { 605 int cursor; 606 struct ata_ering_entry ring[ATA_ERING_SIZE]; 607}; 608 609struct ata_device { 610 struct ata_link *link; 611 unsigned int devno; /* 0 or 1 */ 612 unsigned int horkage; /* List of broken features */ 613 unsigned long flags; /* ATA_DFLAG_xxx */ 614 struct scsi_device *sdev; /* attached SCSI device */ 615 void *private_data; 616#ifdef CONFIG_ATA_ACPI 617 acpi_handle acpi_handle; 618 union acpi_object *gtf_cache; 619 unsigned int gtf_filter; 620#endif 621 struct device tdev; 622 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */ 623 u64 n_sectors; /* size of device, if ATA */ 624 u64 n_native_sectors; /* native size, if ATA */ 625 unsigned int class; /* ATA_DEV_xxx */ 626 unsigned long unpark_deadline; 627 628 u8 pio_mode; 629 u8 dma_mode; 630 u8 xfer_mode; 631 unsigned int xfer_shift; /* ATA_SHIFT_xxx */ 632 633 unsigned int multi_count; /* sectors count for 634 READ/WRITE MULTIPLE */ 635 unsigned int max_sectors; /* per-device max sectors */ 636 unsigned int cdb_len; 637 638 /* per-dev xfer mask */ 639 unsigned long pio_mask; 640 unsigned long mwdma_mask; 641 unsigned long udma_mask; 642 643 /* for CHS addressing */ 644 u16 cylinders; /* Number of cylinders */ 645 u16 heads; /* Number of heads */ 646 u16 sectors; /* Number of sectors per track */ 647 648 union { 649 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ 650 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ 651 }; 652 653 /* error history */ 654 int spdn_cnt; 655 /* ering is CLEAR_END, read comment above CLEAR_END */ 656 struct ata_ering ering; 657}; 658 659/* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are 660 * cleared to zero on ata_dev_init(). 661 */ 662#define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors) 663#define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering) 664 665struct ata_eh_info { 666 struct ata_device *dev; /* offending device */ 667 u32 serror; /* SError from LLDD */ 668 unsigned int err_mask; /* port-wide err_mask */ 669 unsigned int action; /* ATA_EH_* action mask */ 670 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ 671 unsigned int flags; /* ATA_EHI_* flags */ 672 673 unsigned int probe_mask; 674 675 char desc[ATA_EH_DESC_LEN]; 676 int desc_len; 677}; 678 679struct ata_eh_context { 680 struct ata_eh_info i; 681 int tries[ATA_MAX_DEVICES]; 682 int cmd_timeout_idx[ATA_MAX_DEVICES] 683 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE]; 684 unsigned int classes[ATA_MAX_DEVICES]; 685 unsigned int did_probe_mask; 686 unsigned int unloaded_mask; 687 unsigned int saved_ncq_enabled; 688 u8 saved_xfer_mode[ATA_MAX_DEVICES]; 689 /* timestamp for the last reset attempt or success */ 690 unsigned long last_reset; 691}; 692 693struct ata_acpi_drive 694{ 695 u32 pio; 696 u32 dma; 697} __packed; 698 699struct ata_acpi_gtm { 700 struct ata_acpi_drive drive[2]; 701 u32 flags; 702} __packed; 703 704struct ata_link { 705 struct ata_port *ap; 706 int pmp; /* port multiplier port # */ 707 708 struct device tdev; 709 unsigned int active_tag; /* active tag on this link */ 710 u32 sactive; /* active NCQ commands */ 711 712 unsigned int flags; /* ATA_LFLAG_xxx */ 713 714 u32 saved_scontrol; /* SControl on probe */ 715 unsigned int hw_sata_spd_limit; 716 unsigned int sata_spd_limit; 717 unsigned int sata_spd; /* current SATA PHY speed */ 718 enum ata_lpm_policy lpm_policy; 719 720 /* record runtime error info, protected by host_set lock */ 721 struct ata_eh_info eh_info; 722 /* EH context */ 723 struct ata_eh_context eh_context; 724 725 struct ata_device device[ATA_MAX_DEVICES]; 726}; 727#define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag) 728#define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0]) 729 730struct ata_port { 731 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ 732 struct ata_port_operations *ops; 733 spinlock_t *lock; 734 /* Flags owned by the EH context. Only EH should touch these once the 735 port is active */ 736 unsigned long flags; /* ATA_FLAG_xxx */ 737 /* Flags that change dynamically, protected by ap->lock */ 738 unsigned int pflags; /* ATA_PFLAG_xxx */ 739 unsigned int print_id; /* user visible unique port ID */ 740 unsigned int port_no; /* 0 based port no. inside the host */ 741 742#ifdef CONFIG_ATA_SFF 743 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ 744 u8 ctl; /* cache of ATA control register */ 745 u8 last_ctl; /* Cache last written value */ 746 struct ata_link* sff_pio_task_link; /* link currently used */ 747 struct delayed_work sff_pio_task; 748#ifdef CONFIG_ATA_BMDMA 749 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */ 750 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */ 751#endif /* CONFIG_ATA_BMDMA */ 752#endif /* CONFIG_ATA_SFF */ 753 754 unsigned int pio_mask; 755 unsigned int mwdma_mask; 756 unsigned int udma_mask; 757 unsigned int cbl; /* cable type; ATA_CBL_xxx */ 758 759 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; 760 unsigned long qc_allocated; 761 unsigned int qc_active; 762 int nr_active_links; /* #links with active qcs */ 763 764 struct ata_link link; /* host default link */ 765 struct ata_link *slave_link; /* see ata_slave_link_init() */ 766 767 int nr_pmp_links; /* nr of available PMP links */ 768 struct ata_link *pmp_link; /* array of PMP links */ 769 struct ata_link *excl_link; /* for PMP qc exclusion */ 770 771 struct ata_port_stats stats; 772 struct ata_host *host; 773 struct device *dev; 774 struct device tdev; 775 776 struct mutex scsi_scan_mutex; 777 struct delayed_work hotplug_task; 778 struct work_struct scsi_rescan_task; 779 780 unsigned int hsm_task_state; 781 782 u32 msg_enable; 783 struct list_head eh_done_q; 784 wait_queue_head_t eh_wait_q; 785 int eh_tries; 786 struct completion park_req_pending; 787 788 pm_message_t pm_mesg; 789 int *pm_result; 790 enum ata_lpm_policy target_lpm_policy; 791 792 struct timer_list fastdrain_timer; 793 unsigned long fastdrain_cnt; 794 795 int em_message_type; 796 void *private_data; 797 798#ifdef CONFIG_ATA_ACPI 799 acpi_handle acpi_handle; 800 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */ 801#endif 802 /* owned by EH */ 803 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned; 804}; 805 806/* The following initializer overrides a method to NULL whether one of 807 * its parent has the method defined or not. This is equivalent to 808 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant 809 * expression and thus can't be used as an initializer. 810 */ 811#define ATA_OP_NULL (void *)(unsigned long)(-ENOENT) 812 813struct ata_port_operations { 814 /* 815 * Command execution 816 */ 817 int (*qc_defer)(struct ata_queued_cmd *qc); 818 int (*check_atapi_dma)(struct ata_queued_cmd *qc); 819 void (*qc_prep)(struct ata_queued_cmd *qc); 820 unsigned int (*qc_issue)(struct ata_queued_cmd *qc); 821 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc); 822 823 /* 824 * Configuration and exception handling 825 */ 826 int (*cable_detect)(struct ata_port *ap); 827 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask); 828 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev); 829 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev); 830 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev); 831 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id); 832 833 void (*dev_config)(struct ata_device *dev); 834 835 void (*freeze)(struct ata_port *ap); 836 void (*thaw)(struct ata_port *ap); 837 ata_prereset_fn_t prereset; 838 ata_reset_fn_t softreset; 839 ata_reset_fn_t hardreset; 840 ata_postreset_fn_t postreset; 841 ata_prereset_fn_t pmp_prereset; 842 ata_reset_fn_t pmp_softreset; 843 ata_reset_fn_t pmp_hardreset; 844 ata_postreset_fn_t pmp_postreset; 845 void (*error_handler)(struct ata_port *ap); 846 void (*lost_interrupt)(struct ata_port *ap); 847 void (*post_internal_cmd)(struct ata_queued_cmd *qc); 848 849 /* 850 * Optional features 851 */ 852 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val); 853 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val); 854 void (*pmp_attach)(struct ata_port *ap); 855 void (*pmp_detach)(struct ata_port *ap); 856 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy, 857 unsigned hints); 858 859 /* 860 * Start, stop, suspend and resume 861 */ 862 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg); 863 int (*port_resume)(struct ata_port *ap); 864 int (*port_start)(struct ata_port *ap); 865 void (*port_stop)(struct ata_port *ap); 866 void (*host_stop)(struct ata_host *host); 867 868#ifdef CONFIG_ATA_SFF 869 /* 870 * SFF / taskfile oriented ops 871 */ 872 void (*sff_dev_select)(struct ata_port *ap, unsigned int device); 873 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl); 874 u8 (*sff_check_status)(struct ata_port *ap); 875 u8 (*sff_check_altstatus)(struct ata_port *ap); 876 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf); 877 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf); 878 void (*sff_exec_command)(struct ata_port *ap, 879 const struct ata_taskfile *tf); 880 unsigned int (*sff_data_xfer)(struct ata_device *dev, 881 unsigned char *buf, unsigned int buflen, int rw); 882 void (*sff_irq_on)(struct ata_port *); 883 bool (*sff_irq_check)(struct ata_port *); 884 void (*sff_irq_clear)(struct ata_port *); 885 void (*sff_drain_fifo)(struct ata_queued_cmd *qc); 886 887#ifdef CONFIG_ATA_BMDMA 888 void (*bmdma_setup)(struct ata_queued_cmd *qc); 889 void (*bmdma_start)(struct ata_queued_cmd *qc); 890 void (*bmdma_stop)(struct ata_queued_cmd *qc); 891 u8 (*bmdma_status)(struct ata_port *ap); 892#endif /* CONFIG_ATA_BMDMA */ 893#endif /* CONFIG_ATA_SFF */ 894 895 ssize_t (*em_show)(struct ata_port *ap, char *buf); 896 ssize_t (*em_store)(struct ata_port *ap, const char *message, 897 size_t size); 898 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf); 899 ssize_t (*sw_activity_store)(struct ata_device *dev, 900 enum sw_activity val); 901 /* 902 * Obsolete 903 */ 904 void (*phy_reset)(struct ata_port *ap); 905 void (*eng_timeout)(struct ata_port *ap); 906 907 /* 908 * ->inherits must be the last field and all the preceding 909 * fields must be pointers. 910 */ 911 const struct ata_port_operations *inherits; 912}; 913 914struct ata_port_info { 915 unsigned long flags; 916 unsigned long link_flags; 917 unsigned long pio_mask; 918 unsigned long mwdma_mask; 919 unsigned long udma_mask; 920 struct ata_port_operations *port_ops; 921 void *private_data; 922}; 923 924struct ata_timing { 925 unsigned short mode; /* ATA mode */ 926 unsigned short setup; /* t1 */ 927 unsigned short act8b; /* t2 for 8-bit I/O */ 928 unsigned short rec8b; /* t2i for 8-bit I/O */ 929 unsigned short cyc8b; /* t0 for 8-bit I/O */ 930 unsigned short active; /* t2 or tD */ 931 unsigned short recover; /* t2i or tK */ 932 unsigned short dmack_hold; /* tj */ 933 unsigned short cycle; /* t0 */ 934 unsigned short udma; /* t2CYCTYP/2 */ 935}; 936 937/* 938 * Core layer - drivers/ata/libata-core.c 939 */ 940extern const unsigned long sata_deb_timing_normal[]; 941extern const unsigned long sata_deb_timing_hotplug[]; 942extern const unsigned long sata_deb_timing_long[]; 943 944extern struct ata_port_operations ata_dummy_port_ops; 945extern const struct ata_port_info ata_dummy_port_info; 946 947static inline const unsigned long * 948sata_ehc_deb_timing(struct ata_eh_context *ehc) 949{ 950 if (ehc->i.flags & ATA_EHI_HOTPLUGGED) 951 return sata_deb_timing_hotplug; 952 else 953 return sata_deb_timing_normal; 954} 955 956static inline int ata_port_is_dummy(struct ata_port *ap) 957{ 958 return ap->ops == &ata_dummy_port_ops; 959} 960 961extern int sata_set_spd(struct ata_link *link); 962extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); 963extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, 964 int (*check_ready)(struct ata_link *link)); 965extern int sata_link_debounce(struct ata_link *link, 966 const unsigned long *params, unsigned long deadline); 967extern int sata_link_resume(struct ata_link *link, const unsigned long *params, 968 unsigned long deadline); 969extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy, 970 bool spm_wakeup); 971extern int sata_link_hardreset(struct ata_link *link, 972 const unsigned long *timing, unsigned long deadline, 973 bool *online, int (*check_ready)(struct ata_link *)); 974extern int sata_std_hardreset(struct ata_link *link, unsigned int *class, 975 unsigned long deadline); 976extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); 977 978extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports); 979extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, 980 const struct ata_port_info * const * ppi, int n_ports); 981extern int ata_slave_link_init(struct ata_port *ap); 982extern int ata_host_start(struct ata_host *host); 983extern int ata_host_register(struct ata_host *host, 984 struct scsi_host_template *sht); 985extern int ata_host_activate(struct ata_host *host, int irq, 986 irq_handler_t irq_handler, unsigned long irq_flags, 987 struct scsi_host_template *sht); 988extern void ata_host_detach(struct ata_host *host); 989extern void ata_host_init(struct ata_host *, struct device *, 990 unsigned long, struct ata_port_operations *); 991extern int ata_scsi_detect(struct scsi_host_template *sht); 992extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); 993extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd); 994extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev, 995 int cmd, void __user *arg); 996extern void ata_sas_port_destroy(struct ata_port *); 997extern struct ata_port *ata_sas_port_alloc(struct ata_host *, 998 struct ata_port_info *, struct Scsi_Host *); 999extern void ata_sas_async_probe(struct ata_port *ap); 1000extern int ata_sas_sync_probe(struct ata_port *ap); 1001extern int ata_sas_port_init(struct ata_port *); 1002extern int ata_sas_port_start(struct ata_port *ap); 1003extern void ata_sas_port_stop(struct ata_port *ap); 1004extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); 1005extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap); 1006extern int sata_scr_valid(struct ata_link *link); 1007extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); 1008extern int sata_scr_write(struct ata_link *link, int reg, u32 val); 1009extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); 1010extern bool ata_link_online(struct ata_link *link); 1011extern bool ata_link_offline(struct ata_link *link); 1012#ifdef CONFIG_PM 1013extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg); 1014extern void ata_host_resume(struct ata_host *host); 1015#endif 1016extern int ata_ratelimit(void); 1017extern void ata_msleep(struct ata_port *ap, unsigned int msecs); 1018extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask, 1019 u32 val, unsigned long interval, unsigned long timeout); 1020extern int atapi_cmd_type(u8 opcode); 1021extern void ata_tf_to_fis(const struct ata_taskfile *tf, 1022 u8 pmp, int is_cmd, u8 *fis); 1023extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); 1024extern unsigned long ata_pack_xfermask(unsigned long pio_mask, 1025 unsigned long mwdma_mask, unsigned long udma_mask); 1026extern void ata_unpack_xfermask(unsigned long xfer_mask, 1027 unsigned long *pio_mask, unsigned long *mwdma_mask, 1028 unsigned long *udma_mask); 1029extern u8 ata_xfer_mask2mode(unsigned long xfer_mask); 1030extern unsigned long ata_xfer_mode2mask(u8 xfer_mode); 1031extern int ata_xfer_mode2shift(unsigned long xfer_mode); 1032extern const char *ata_mode_string(unsigned long xfer_mask); 1033extern unsigned long ata_id_xfermask(const u16 *id); 1034extern int ata_std_qc_defer(struct ata_queued_cmd *qc); 1035extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); 1036extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, 1037 unsigned int n_elem); 1038extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); 1039extern void ata_dev_disable(struct ata_device *adev); 1040extern void ata_id_string(const u16 *id, unsigned char *s, 1041 unsigned int ofs, unsigned int len); 1042extern void ata_id_c_string(const u16 *id, unsigned char *s, 1043 unsigned int ofs, unsigned int len); 1044extern unsigned int ata_do_dev_read_id(struct ata_device *dev, 1045 struct ata_taskfile *tf, u16 *id); 1046extern void ata_qc_complete(struct ata_queued_cmd *qc); 1047extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active); 1048extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd); 1049extern int ata_std_bios_param(struct scsi_device *sdev, 1050 struct block_device *bdev, 1051 sector_t capacity, int geom[]); 1052extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev); 1053extern int ata_scsi_slave_config(struct scsi_device *sdev); 1054extern void ata_scsi_slave_destroy(struct scsi_device *sdev); 1055extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, 1056 int queue_depth, int reason); 1057extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, 1058 int queue_depth, int reason); 1059extern struct ata_device *ata_dev_pair(struct ata_device *adev); 1060extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); 1061extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap); 1062extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q); 1063 1064extern int ata_cable_40wire(struct ata_port *ap); 1065extern int ata_cable_80wire(struct ata_port *ap); 1066extern int ata_cable_sata(struct ata_port *ap); 1067extern int ata_cable_ignore(struct ata_port *ap); 1068extern int ata_cable_unknown(struct ata_port *ap); 1069 1070/* Timing helpers */ 1071extern unsigned int ata_pio_need_iordy(const struct ata_device *); 1072extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); 1073extern int ata_timing_compute(struct ata_device *, unsigned short, 1074 struct ata_timing *, int, int); 1075extern void ata_timing_merge(const struct ata_timing *, 1076 const struct ata_timing *, struct ata_timing *, 1077 unsigned int); 1078extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); 1079 1080/* PCI */ 1081#ifdef CONFIG_PCI 1082struct pci_dev; 1083 1084struct pci_bits { 1085 unsigned int reg; /* PCI config register to read */ 1086 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ 1087 unsigned long mask; 1088 unsigned long val; 1089}; 1090 1091extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); 1092extern void ata_pci_remove_one(struct pci_dev *pdev); 1093 1094#ifdef CONFIG_PM 1095extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); 1096extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); 1097extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); 1098extern int ata_pci_device_resume(struct pci_dev *pdev); 1099#endif /* CONFIG_PM */ 1100#endif /* CONFIG_PCI */ 1101 1102/* 1103 * ACPI - drivers/ata/libata-acpi.c 1104 */ 1105#ifdef CONFIG_ATA_ACPI 1106static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1107{ 1108 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) 1109 return &ap->__acpi_init_gtm; 1110 return NULL; 1111} 1112int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); 1113int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); 1114unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, 1115 const struct ata_acpi_gtm *gtm); 1116int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm); 1117#else 1118static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1119{ 1120 return NULL; 1121} 1122 1123static inline int ata_acpi_stm(const struct ata_port *ap, 1124 struct ata_acpi_gtm *stm) 1125{ 1126 return -ENOSYS; 1127} 1128 1129static inline int ata_acpi_gtm(const struct ata_port *ap, 1130 struct ata_acpi_gtm *stm) 1131{ 1132 return -ENOSYS; 1133} 1134 1135static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, 1136 const struct ata_acpi_gtm *gtm) 1137{ 1138 return 0; 1139} 1140 1141static inline int ata_acpi_cbl_80wire(struct ata_port *ap, 1142 const struct ata_acpi_gtm *gtm) 1143{ 1144 return 0; 1145} 1146#endif 1147 1148/* 1149 * EH - drivers/ata/libata-eh.c 1150 */ 1151extern void ata_port_schedule_eh(struct ata_port *ap); 1152extern void ata_port_wait_eh(struct ata_port *ap); 1153extern int ata_link_abort(struct ata_link *link); 1154extern int ata_port_abort(struct ata_port *ap); 1155extern int ata_port_freeze(struct ata_port *ap); 1156extern int sata_async_notification(struct ata_port *ap); 1157 1158extern void ata_eh_freeze_port(struct ata_port *ap); 1159extern void ata_eh_thaw_port(struct ata_port *ap); 1160 1161extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); 1162extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); 1163extern void ata_eh_analyze_ncq_error(struct ata_link *link); 1164 1165extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, 1166 ata_reset_fn_t softreset, ata_reset_fn_t hardreset, 1167 ata_postreset_fn_t postreset); 1168extern void ata_std_error_handler(struct ata_port *ap); 1169extern int ata_link_nr_enabled(struct ata_link *link); 1170 1171/* 1172 * Base operations to inherit from and initializers for sht 1173 * 1174 * Operations 1175 * 1176 * base : Common to all libata drivers. 1177 * sata : SATA controllers w/ native interface. 1178 * pmp : SATA controllers w/ PMP support. 1179 * sff : SFF ATA controllers w/o BMDMA support. 1180 * bmdma : SFF ATA controllers w/ BMDMA support. 1181 * 1182 * sht initializers 1183 * 1184 * BASE : Common to all libata drivers. The user must set 1185 * sg_tablesize and dma_boundary. 1186 * PIO : SFF ATA controllers w/ only PIO support. 1187 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and 1188 * dma_boundary are set to BMDMA limits. 1189 * NCQ : SATA controllers supporting NCQ. The user must set 1190 * sg_tablesize, dma_boundary and can_queue. 1191 */ 1192extern const struct ata_port_operations ata_base_port_ops; 1193extern const struct ata_port_operations sata_port_ops; 1194extern struct device_attribute *ata_common_sdev_attrs[]; 1195 1196#define ATA_BASE_SHT(drv_name) \ 1197 .module = THIS_MODULE, \ 1198 .name = drv_name, \ 1199 .ioctl = ata_scsi_ioctl, \ 1200 .queuecommand = ata_scsi_queuecmd, \ 1201 .can_queue = ATA_DEF_QUEUE, \ 1202 .this_id = ATA_SHT_THIS_ID, \ 1203 .cmd_per_lun = ATA_SHT_CMD_PER_LUN, \ 1204 .emulated = ATA_SHT_EMULATED, \ 1205 .use_clustering = ATA_SHT_USE_CLUSTERING, \ 1206 .proc_name = drv_name, \ 1207 .slave_configure = ata_scsi_slave_config, \ 1208 .slave_destroy = ata_scsi_slave_destroy, \ 1209 .bios_param = ata_std_bios_param, \ 1210 .unlock_native_capacity = ata_scsi_unlock_native_capacity, \ 1211 .sdev_attrs = ata_common_sdev_attrs 1212 1213#define ATA_NCQ_SHT(drv_name) \ 1214 ATA_BASE_SHT(drv_name), \ 1215 .change_queue_depth = ata_scsi_change_queue_depth 1216 1217/* 1218 * PMP helpers 1219 */ 1220#ifdef CONFIG_SATA_PMP 1221static inline bool sata_pmp_supported(struct ata_port *ap) 1222{ 1223 return ap->flags & ATA_FLAG_PMP; 1224} 1225 1226static inline bool sata_pmp_attached(struct ata_port *ap) 1227{ 1228 return ap->nr_pmp_links != 0; 1229} 1230 1231static inline int ata_is_host_link(const struct ata_link *link) 1232{ 1233 return link == &link->ap->link || link == link->ap->slave_link; 1234} 1235#else /* CONFIG_SATA_PMP */ 1236static inline bool sata_pmp_supported(struct ata_port *ap) 1237{ 1238 return false; 1239} 1240 1241static inline bool sata_pmp_attached(struct ata_port *ap) 1242{ 1243 return false; 1244} 1245 1246static inline int ata_is_host_link(const struct ata_link *link) 1247{ 1248 return 1; 1249} 1250#endif /* CONFIG_SATA_PMP */ 1251 1252static inline int sata_srst_pmp(struct ata_link *link) 1253{ 1254 if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) 1255 return SATA_PMP_CTRL_PORT; 1256 return link->pmp; 1257} 1258 1259/* 1260 * printk helpers 1261 */ 1262__printf(3, 4) 1263int ata_port_printk(const struct ata_port *ap, const char *level, 1264 const char *fmt, ...); 1265__printf(3, 4) 1266int ata_link_printk(const struct ata_link *link, const char *level, 1267 const char *fmt, ...); 1268__printf(3, 4) 1269int ata_dev_printk(const struct ata_device *dev, const char *level, 1270 const char *fmt, ...); 1271 1272#define ata_port_err(ap, fmt, ...) \ 1273 ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__) 1274#define ata_port_warn(ap, fmt, ...) \ 1275 ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__) 1276#define ata_port_notice(ap, fmt, ...) \ 1277 ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__) 1278#define ata_port_info(ap, fmt, ...) \ 1279 ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__) 1280#define ata_port_dbg(ap, fmt, ...) \ 1281 ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__) 1282 1283#define ata_link_err(link, fmt, ...) \ 1284 ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__) 1285#define ata_link_warn(link, fmt, ...) \ 1286 ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__) 1287#define ata_link_notice(link, fmt, ...) \ 1288 ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__) 1289#define ata_link_info(link, fmt, ...) \ 1290 ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__) 1291#define ata_link_dbg(link, fmt, ...) \ 1292 ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__) 1293 1294#define ata_dev_err(dev, fmt, ...) \ 1295 ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__) 1296#define ata_dev_warn(dev, fmt, ...) \ 1297 ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__) 1298#define ata_dev_notice(dev, fmt, ...) \ 1299 ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__) 1300#define ata_dev_info(dev, fmt, ...) \ 1301 ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__) 1302#define ata_dev_dbg(dev, fmt, ...) \ 1303 ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__) 1304 1305void ata_print_version(const struct device *dev, const char *version); 1306 1307/* 1308 * ata_eh_info helpers 1309 */ 1310extern __printf(2, 3) 1311void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); 1312extern __printf(2, 3) 1313void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); 1314extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); 1315 1316static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) 1317{ 1318 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; 1319 ehi->flags |= ATA_EHI_HOTPLUGGED; 1320 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK; 1321 ehi->err_mask |= AC_ERR_ATA_BUS; 1322} 1323 1324/* 1325 * port description helpers 1326 */ 1327extern __printf(2, 3) 1328void ata_port_desc(struct ata_port *ap, const char *fmt, ...); 1329#ifdef CONFIG_PCI 1330extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, 1331 const char *name); 1332#endif 1333 1334static inline unsigned int ata_tag_valid(unsigned int tag) 1335{ 1336 return (tag < ATA_MAX_QUEUE) ? 1 : 0; 1337} 1338 1339static inline unsigned int ata_tag_internal(unsigned int tag) 1340{ 1341 return tag == ATA_TAG_INTERNAL; 1342} 1343 1344/* 1345 * device helpers 1346 */ 1347static inline unsigned int ata_class_enabled(unsigned int class) 1348{ 1349 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || 1350 class == ATA_DEV_PMP || class == ATA_DEV_SEMB; 1351} 1352 1353static inline unsigned int ata_class_disabled(unsigned int class) 1354{ 1355 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || 1356 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP; 1357} 1358 1359static inline unsigned int ata_class_absent(unsigned int class) 1360{ 1361 return !ata_class_enabled(class) && !ata_class_disabled(class); 1362} 1363 1364static inline unsigned int ata_dev_enabled(const struct ata_device *dev) 1365{ 1366 return ata_class_enabled(dev->class); 1367} 1368 1369static inline unsigned int ata_dev_disabled(const struct ata_device *dev) 1370{ 1371 return ata_class_disabled(dev->class); 1372} 1373 1374static inline unsigned int ata_dev_absent(const struct ata_device *dev) 1375{ 1376 return ata_class_absent(dev->class); 1377} 1378 1379/* 1380 * link helpers 1381 */ 1382static inline int ata_link_max_devices(const struct ata_link *link) 1383{ 1384 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) 1385 return 2; 1386 return 1; 1387} 1388 1389static inline int ata_link_active(struct ata_link *link) 1390{ 1391 return ata_tag_valid(link->active_tag) || link->sactive; 1392} 1393 1394/* 1395 * Iterators 1396 * 1397 * ATA_LITER_* constants are used to select link iteration mode and 1398 * ATA_DITER_* device iteration mode. 1399 * 1400 * For a custom iteration directly using ata_{link|dev}_next(), if 1401 * @link or @dev, respectively, is NULL, the first element is 1402 * returned. @dev and @link can be any valid device or link and the 1403 * next element according to the iteration mode will be returned. 1404 * After the last element, NULL is returned. 1405 */ 1406enum ata_link_iter_mode { 1407 ATA_LITER_EDGE, /* if present, PMP links only; otherwise, 1408 * host link. no slave link */ 1409 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */ 1410 ATA_LITER_PMP_FIRST, /* PMP links followed by host link, 1411 * slave link still comes after host link */ 1412}; 1413 1414enum ata_dev_iter_mode { 1415 ATA_DITER_ENABLED, 1416 ATA_DITER_ENABLED_REVERSE, 1417 ATA_DITER_ALL, 1418 ATA_DITER_ALL_REVERSE, 1419}; 1420 1421extern struct ata_link *ata_link_next(struct ata_link *link, 1422 struct ata_port *ap, 1423 enum ata_link_iter_mode mode); 1424 1425extern struct ata_device *ata_dev_next(struct ata_device *dev, 1426 struct ata_link *link, 1427 enum ata_dev_iter_mode mode); 1428 1429/* 1430 * Shortcut notation for iterations 1431 * 1432 * ata_for_each_link() iterates over each link of @ap according to 1433 * @mode. @link points to the current link in the loop. @link is 1434 * NULL after loop termination. ata_for_each_dev() works the same way 1435 * except that it iterates over each device of @link. 1436 * 1437 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be 1438 * specified when using the following shorthand notations. Only the 1439 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be 1440 * specified. This not only increases brevity but also makes it 1441 * impossible to use ATA_LITER_* for device iteration or vice-versa. 1442 */ 1443#define ata_for_each_link(link, ap, mode) \ 1444 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \ 1445 (link) = ata_link_next((link), (ap), ATA_LITER_##mode)) 1446 1447#define ata_for_each_dev(dev, link, mode) \ 1448 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \ 1449 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode)) 1450 1451/** 1452 * ata_ncq_enabled - Test whether NCQ is enabled 1453 * @dev: ATA device to test for 1454 * 1455 * LOCKING: 1456 * spin_lock_irqsave(host lock) 1457 * 1458 * RETURNS: 1459 * 1 if NCQ is enabled for @dev, 0 otherwise. 1460 */ 1461static inline int ata_ncq_enabled(struct ata_device *dev) 1462{ 1463 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | 1464 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; 1465} 1466 1467static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) 1468{ 1469 qc->tf.ctl |= ATA_NIEN; 1470} 1471 1472static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, 1473 unsigned int tag) 1474{ 1475 if (likely(ata_tag_valid(tag))) 1476 return &ap->qcmd[tag]; 1477 return NULL; 1478} 1479 1480static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, 1481 unsigned int tag) 1482{ 1483 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); 1484 1485 if (unlikely(!qc) || !ap->ops->error_handler) 1486 return qc; 1487 1488 if ((qc->flags & (ATA_QCFLAG_ACTIVE | 1489 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) 1490 return qc; 1491 1492 return NULL; 1493} 1494 1495static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc) 1496{ 1497 return qc->nbytes - min(qc->extrabytes, qc->nbytes); 1498} 1499 1500static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) 1501{ 1502 memset(tf, 0, sizeof(*tf)); 1503 1504#ifdef CONFIG_ATA_SFF 1505 tf->ctl = dev->link->ap->ctl; 1506#else 1507 tf->ctl = ATA_DEVCTL_OBS; 1508#endif 1509 if (dev->devno == 0) 1510 tf->device = ATA_DEVICE_OBS; 1511 else 1512 tf->device = ATA_DEVICE_OBS | ATA_DEV1; 1513} 1514 1515static inline void ata_qc_reinit(struct ata_queued_cmd *qc) 1516{ 1517 qc->dma_dir = DMA_NONE; 1518 qc->sg = NULL; 1519 qc->flags = 0; 1520 qc->cursg = NULL; 1521 qc->cursg_ofs = 0; 1522 qc->nbytes = qc->extrabytes = qc->curbytes = 0; 1523 qc->n_elem = 0; 1524 qc->err_mask = 0; 1525 qc->sect_size = ATA_SECT_SIZE; 1526 1527 ata_tf_init(qc->dev, &qc->tf); 1528 1529 /* init result_tf such that it indicates normal completion */ 1530 qc->result_tf.command = ATA_DRDY; 1531 qc->result_tf.feature = 0; 1532} 1533 1534static inline int ata_try_flush_cache(const struct ata_device *dev) 1535{ 1536 return ata_id_wcache_enabled(dev->id) || 1537 ata_id_has_flush(dev->id) || 1538 ata_id_has_flush_ext(dev->id); 1539} 1540 1541static inline unsigned int ac_err_mask(u8 status) 1542{ 1543 if (status & (ATA_BUSY | ATA_DRQ)) 1544 return AC_ERR_HSM; 1545 if (status & (ATA_ERR | ATA_DF)) 1546 return AC_ERR_DEV; 1547 return 0; 1548} 1549 1550static inline unsigned int __ac_err_mask(u8 status) 1551{ 1552 unsigned int mask = ac_err_mask(status); 1553 if (mask == 0) 1554 return AC_ERR_OTHER; 1555 return mask; 1556} 1557 1558static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) 1559{ 1560 return *(struct ata_port **)&host->hostdata[0]; 1561} 1562 1563static inline int ata_check_ready(u8 status) 1564{ 1565 if (!(status & ATA_BUSY)) 1566 return 1; 1567 1568 /* 0xff indicates either no device or device not ready */ 1569 if (status == 0xff) 1570 return -ENODEV; 1571 1572 return 0; 1573} 1574 1575static inline unsigned long ata_deadline(unsigned long from_jiffies, 1576 unsigned long timeout_msecs) 1577{ 1578 return from_jiffies + msecs_to_jiffies(timeout_msecs); 1579} 1580 1581/* Don't open code these in drivers as there are traps. Firstly the range may 1582 change in future hardware and specs, secondly 0xFF means 'no DMA' but is 1583 > UDMA_0. Dyma ddreigiau */ 1584 1585static inline int ata_using_mwdma(struct ata_device *adev) 1586{ 1587 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4) 1588 return 1; 1589 return 0; 1590} 1591 1592static inline int ata_using_udma(struct ata_device *adev) 1593{ 1594 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7) 1595 return 1; 1596 return 0; 1597} 1598 1599static inline int ata_dma_enabled(struct ata_device *adev) 1600{ 1601 return (adev->dma_mode == 0xFF ? 0 : 1); 1602} 1603 1604/************************************************************************** 1605 * PMP - drivers/ata/libata-pmp.c 1606 */ 1607#ifdef CONFIG_SATA_PMP 1608 1609extern const struct ata_port_operations sata_pmp_port_ops; 1610 1611extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); 1612extern void sata_pmp_error_handler(struct ata_port *ap); 1613 1614#else /* CONFIG_SATA_PMP */ 1615 1616#define sata_pmp_port_ops sata_port_ops 1617#define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer 1618#define sata_pmp_error_handler ata_std_error_handler 1619 1620#endif /* CONFIG_SATA_PMP */ 1621 1622 1623/************************************************************************** 1624 * SFF - drivers/ata/libata-sff.c 1625 */ 1626#ifdef CONFIG_ATA_SFF 1627 1628extern const struct ata_port_operations ata_sff_port_ops; 1629extern const struct ata_port_operations ata_bmdma32_port_ops; 1630 1631/* PIO only, sg_tablesize and dma_boundary limits can be removed */ 1632#define ATA_PIO_SHT(drv_name) \ 1633 ATA_BASE_SHT(drv_name), \ 1634 .sg_tablesize = LIBATA_MAX_PRD, \ 1635 .dma_boundary = ATA_DMA_BOUNDARY 1636 1637extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); 1638extern u8 ata_sff_check_status(struct ata_port *ap); 1639extern void ata_sff_pause(struct ata_port *ap); 1640extern void ata_sff_dma_pause(struct ata_port *ap); 1641extern int ata_sff_busy_sleep(struct ata_port *ap, 1642 unsigned long timeout_pat, unsigned long timeout); 1643extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline); 1644extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); 1645extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf); 1646extern void ata_sff_exec_command(struct ata_port *ap, 1647 const struct ata_taskfile *tf); 1648extern unsigned int ata_sff_data_xfer(struct ata_device *dev, 1649 unsigned char *buf, unsigned int buflen, int rw); 1650extern unsigned int ata_sff_data_xfer32(struct ata_device *dev, 1651 unsigned char *buf, unsigned int buflen, int rw); 1652extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev, 1653 unsigned char *buf, unsigned int buflen, int rw); 1654extern void ata_sff_irq_on(struct ata_port *ap); 1655extern void ata_sff_irq_clear(struct ata_port *ap); 1656extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, 1657 u8 status, int in_wq); 1658extern void ata_sff_queue_work(struct work_struct *work); 1659extern void ata_sff_queue_delayed_work(struct delayed_work *dwork, 1660 unsigned long delay); 1661extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay); 1662extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); 1663extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); 1664extern unsigned int ata_sff_port_intr(struct ata_port *ap, 1665 struct ata_queued_cmd *qc); 1666extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); 1667extern void ata_sff_lost_interrupt(struct ata_port *ap); 1668extern void ata_sff_freeze(struct ata_port *ap); 1669extern void ata_sff_thaw(struct ata_port *ap); 1670extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline); 1671extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, 1672 u8 *r_err); 1673extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask, 1674 unsigned long deadline); 1675extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes, 1676 unsigned long deadline); 1677extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class, 1678 unsigned long deadline); 1679extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes); 1680extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc); 1681extern void ata_sff_error_handler(struct ata_port *ap); 1682extern void ata_sff_std_ports(struct ata_ioports *ioaddr); 1683#ifdef CONFIG_PCI 1684extern int ata_pci_sff_init_host(struct ata_host *host); 1685extern int ata_pci_sff_prepare_host(struct pci_dev *pdev, 1686 const struct ata_port_info * const * ppi, 1687 struct ata_host **r_host); 1688extern int ata_pci_sff_activate_host(struct ata_host *host, 1689 irq_handler_t irq_handler, 1690 struct scsi_host_template *sht); 1691extern int ata_pci_sff_init_one(struct pci_dev *pdev, 1692 const struct ata_port_info * const * ppi, 1693 struct scsi_host_template *sht, void *host_priv, int hflags); 1694#endif /* CONFIG_PCI */ 1695 1696#ifdef CONFIG_ATA_BMDMA 1697 1698extern const struct ata_port_operations ata_bmdma_port_ops; 1699 1700#define ATA_BMDMA_SHT(drv_name) \ 1701 ATA_BASE_SHT(drv_name), \ 1702 .sg_tablesize = LIBATA_MAX_PRD, \ 1703 .dma_boundary = ATA_DMA_BOUNDARY 1704 1705extern void ata_bmdma_qc_prep(struct ata_queued_cmd *qc); 1706extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc); 1707extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc); 1708extern unsigned int ata_bmdma_port_intr(struct ata_port *ap, 1709 struct ata_queued_cmd *qc); 1710extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance); 1711extern void ata_bmdma_error_handler(struct ata_port *ap); 1712extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc); 1713extern void ata_bmdma_irq_clear(struct ata_port *ap); 1714extern void ata_bmdma_setup(struct ata_queued_cmd *qc); 1715extern void ata_bmdma_start(struct ata_queued_cmd *qc); 1716extern void ata_bmdma_stop(struct ata_queued_cmd *qc); 1717extern u8 ata_bmdma_status(struct ata_port *ap); 1718extern int ata_bmdma_port_start(struct ata_port *ap); 1719extern int ata_bmdma_port_start32(struct ata_port *ap); 1720 1721#ifdef CONFIG_PCI 1722extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); 1723extern void ata_pci_bmdma_init(struct ata_host *host); 1724extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev, 1725 const struct ata_port_info * const * ppi, 1726 struct ata_host **r_host); 1727extern int ata_pci_bmdma_init_one(struct pci_dev *pdev, 1728 const struct ata_port_info * const * ppi, 1729 struct scsi_host_template *sht, 1730 void *host_priv, int hflags); 1731#endif /* CONFIG_PCI */ 1732#endif /* CONFIG_ATA_BMDMA */ 1733 1734/** 1735 * ata_sff_busy_wait - Wait for a port status register 1736 * @ap: Port to wait for. 1737 * @bits: bits that must be clear 1738 * @max: number of 10uS waits to perform 1739 * 1740 * Waits up to max*10 microseconds for the selected bits in the port's 1741 * status register to be cleared. 1742 * Returns final value of status register. 1743 * 1744 * LOCKING: 1745 * Inherited from caller. 1746 */ 1747static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits, 1748 unsigned int max) 1749{ 1750 u8 status; 1751 1752 do { 1753 udelay(10); 1754 status = ap->ops->sff_check_status(ap); 1755 max--; 1756 } while (status != 0xff && (status & bits) && (max > 0)); 1757 1758 return status; 1759} 1760 1761/** 1762 * ata_wait_idle - Wait for a port to be idle. 1763 * @ap: Port to wait for. 1764 * 1765 * Waits up to 10ms for port's BUSY and DRQ signals to clear. 1766 * Returns final value of status register. 1767 * 1768 * LOCKING: 1769 * Inherited from caller. 1770 */ 1771static inline u8 ata_wait_idle(struct ata_port *ap) 1772{ 1773 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); 1774 1775#ifdef ATA_DEBUG 1776 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) 1777 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n", 1778 status); 1779#endif 1780 1781 return status; 1782} 1783#endif /* CONFIG_ATA_SFF */ 1784 1785#endif /* __LINUX_LIBATA_H__ */ 1786