libata.h revision 6b7ae9545ad9875a289f4191c0216b473e313cb9
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 41/* 42 * Define if arch has non-standard setup. This is a _PCI_ standard 43 * not a legacy or ISA standard. 44 */ 45#ifdef CONFIG_ATA_NONSTANDARD 46#include <asm/libata-portmap.h> 47#else 48#include <asm-generic/libata-portmap.h> 49#endif 50 51/* 52 * compile-time options: to be removed as soon as all the drivers are 53 * converted to the new debugging mechanism 54 */ 55#undef ATA_DEBUG /* debugging output */ 56#undef ATA_VERBOSE_DEBUG /* yet more debugging output */ 57#undef ATA_IRQ_TRAP /* define to ack screaming irqs */ 58#undef ATA_NDEBUG /* define to disable quick runtime checks */ 59 60 61/* note: prints function name for you */ 62#ifdef ATA_DEBUG 63#define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) 64#ifdef ATA_VERBOSE_DEBUG 65#define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) 66#else 67#define VPRINTK(fmt, args...) 68#endif /* ATA_VERBOSE_DEBUG */ 69#else 70#define DPRINTK(fmt, args...) 71#define VPRINTK(fmt, args...) 72#endif /* ATA_DEBUG */ 73 74#define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args) 75 76/* NEW: debug levels */ 77#define HAVE_LIBATA_MSG 1 78 79enum { 80 ATA_MSG_DRV = 0x0001, 81 ATA_MSG_INFO = 0x0002, 82 ATA_MSG_PROBE = 0x0004, 83 ATA_MSG_WARN = 0x0008, 84 ATA_MSG_MALLOC = 0x0010, 85 ATA_MSG_CTL = 0x0020, 86 ATA_MSG_INTR = 0x0040, 87 ATA_MSG_ERR = 0x0080, 88}; 89 90#define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV) 91#define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO) 92#define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE) 93#define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN) 94#define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC) 95#define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL) 96#define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR) 97#define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR) 98 99static inline u32 ata_msg_init(int dval, int default_msg_enable_bits) 100{ 101 if (dval < 0 || dval >= (sizeof(u32) * 8)) 102 return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */ 103 if (!dval) 104 return 0; 105 return (1 << dval) - 1; 106} 107 108/* defines only for the constants which don't work well as enums */ 109#define ATA_TAG_POISON 0xfafbfcfdU 110 111enum { 112 /* various global constants */ 113 LIBATA_MAX_PRD = ATA_MAX_PRD / 2, 114 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */ 115 ATA_DEF_QUEUE = 1, 116 /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */ 117 ATA_MAX_QUEUE = 32, 118 ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1, 119 ATA_SHORT_PAUSE = 16, 120 121 ATAPI_MAX_DRAIN = 16 << 10, 122 123 ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1, 124 125 ATA_SHT_EMULATED = 1, 126 ATA_SHT_CMD_PER_LUN = 1, 127 ATA_SHT_THIS_ID = -1, 128 ATA_SHT_USE_CLUSTERING = 1, 129 130 /* struct ata_device stuff */ 131 ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */ 132 ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */ 133 ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */ 134 ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */ 135 ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */ 136 ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ 137 ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ 138 ATA_DFLAG_AN = (1 << 7), /* AN configured */ 139 ATA_DFLAG_HIPM = (1 << 8), /* device supports HIPM */ 140 ATA_DFLAG_DIPM = (1 << 9), /* device supports DIPM */ 141 ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */ 142 ATA_DFLAG_CFG_MASK = (1 << 12) - 1, 143 144 ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */ 145 ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */ 146 ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */ 147 ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */ 148 ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */ 149 ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */ 150 ATA_DFLAG_INIT_MASK = (1 << 24) - 1, 151 152 ATA_DFLAG_DETACH = (1 << 24), 153 ATA_DFLAG_DETACHED = (1 << 25), 154 155 ATA_DEV_UNKNOWN = 0, /* unknown device */ 156 ATA_DEV_ATA = 1, /* ATA device */ 157 ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ 158 ATA_DEV_ATAPI = 3, /* ATAPI device */ 159 ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ 160 ATA_DEV_PMP = 5, /* SATA port multiplier */ 161 ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ 162 ATA_DEV_SEMB = 7, /* SEMB */ 163 ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ 164 ATA_DEV_NONE = 9, /* no device */ 165 166 /* struct ata_link flags */ 167 ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */ 168 ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ 169 ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ 170 ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ 171 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, 172 ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ 173 ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ 174 ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */ 175 ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */ 176 177 /* struct ata_port flags */ 178 ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ 179 /* (doesn't imply presence) */ 180 ATA_FLAG_SATA = (1 << 1), 181 ATA_FLAG_NO_LEGACY = (1 << 2), /* no legacy mode check */ 182 ATA_FLAG_MMIO = (1 << 3), /* use MMIO, not PIO */ 183 ATA_FLAG_SRST = (1 << 4), /* (obsolete) use ATA SRST, not E.D.D. */ 184 ATA_FLAG_SATA_RESET = (1 << 5), /* (obsolete) use COMRESET */ 185 ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ 186 ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ 187 ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ 188 ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD 189 * doesn't handle PIO interrupts */ 190 ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ 191 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */ 192 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */ 193 ATA_FLAG_DEBUGMSG = (1 << 13), 194 ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */ 195 ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ 196 ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ 197 ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ 198 ATA_FLAG_AN = (1 << 18), /* controller supports AN */ 199 ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ 200 ATA_FLAG_LPM = (1 << 20), /* driver can handle LPM */ 201 ATA_FLAG_EM = (1 << 21), /* driver supports enclosure 202 * management */ 203 ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity 204 * led */ 205 206 /* bits 24:31 of ap->flags are reserved for LLD specific flags */ 207 208 209 /* struct ata_port pflags */ 210 ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ 211 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ 212 ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ 213 ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ 214 ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ 215 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ 216 ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ 217 ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ 218 ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */ 219 ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */ 220 221 ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ 222 ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ 223 ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */ 224 225 ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */ 226 ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */ 227 228 /* struct ata_queued_cmd flags */ 229 ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ 230 ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */ 231 ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ 232 ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ 233 ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ 234 ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */ 235 ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */ 236 237 ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */ 238 ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ 239 ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ 240 241 /* host set flags */ 242 ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ 243 ATA_HOST_STARTED = (1 << 1), /* Host started */ 244 ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */ 245 246 /* bits 24:31 of host->flags are reserved for LLD specific flags */ 247 248 /* various lengths of time */ 249 ATA_TMOUT_BOOT = 30000, /* heuristic */ 250 ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */ 251 ATA_TMOUT_INTERNAL_QUICK = 5000, 252 ATA_TMOUT_MAX_PARK = 30000, 253 254 /* 255 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s 256 * is too much without parallel probing. Use 2s if parallel 257 * probing is available, 800ms otherwise. 258 */ 259 ATA_TMOUT_FF_WAIT_LONG = 2000, 260 ATA_TMOUT_FF_WAIT = 800, 261 262 /* Spec mandates to wait for ">= 2ms" before checking status 263 * after reset. We wait 150ms, because that was the magic 264 * delay used for ATAPI devices in Hale Landis's ATADRVR, for 265 * the period of time between when the ATA command register is 266 * written, and then status is checked. Because waiting for 267 * "a while" before checking status is fine, post SRST, we 268 * perform this magic delay here as well. 269 * 270 * Old drivers/ide uses the 2mS rule and then waits for ready. 271 */ 272 ATA_WAIT_AFTER_RESET = 150, 273 274 /* If PMP is supported, we have to do follow-up SRST. As some 275 * PMPs don't send D2H Reg FIS after hardreset, LLDs are 276 * advised to wait only for the following duration before 277 * doing SRST. 278 */ 279 ATA_TMOUT_PMP_SRST_WAIT = 5000, 280 281 /* ATA bus states */ 282 BUS_UNKNOWN = 0, 283 BUS_DMA = 1, 284 BUS_IDLE = 2, 285 BUS_NOINTR = 3, 286 BUS_NODATA = 4, 287 BUS_TIMER = 5, 288 BUS_PIO = 6, 289 BUS_EDD = 7, 290 BUS_IDENTIFY = 8, 291 BUS_PACKET = 9, 292 293 /* SATA port states */ 294 PORT_UNKNOWN = 0, 295 PORT_ENABLED = 1, 296 PORT_DISABLED = 2, 297 298 /* encoding various smaller bitmaps into a single 299 * unsigned long bitmap 300 */ 301 ATA_NR_PIO_MODES = 7, 302 ATA_NR_MWDMA_MODES = 5, 303 ATA_NR_UDMA_MODES = 8, 304 305 ATA_SHIFT_PIO = 0, 306 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES, 307 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES, 308 309 /* size of buffer to pad xfers ending on unaligned boundaries */ 310 ATA_DMA_PAD_SZ = 4, 311 312 /* ering size */ 313 ATA_ERING_SIZE = 32, 314 315 /* return values for ->qc_defer */ 316 ATA_DEFER_LINK = 1, 317 ATA_DEFER_PORT = 2, 318 319 /* desc_len for ata_eh_info and context */ 320 ATA_EH_DESC_LEN = 80, 321 322 /* reset / recovery action types */ 323 ATA_EH_REVALIDATE = (1 << 0), 324 ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */ 325 ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */ 326 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, 327 ATA_EH_ENABLE_LINK = (1 << 3), 328 ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */ 329 330 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK, 331 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET | 332 ATA_EH_ENABLE_LINK, 333 334 /* ata_eh_info->flags */ 335 ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ 336 ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ 337 ATA_EHI_QUIET = (1 << 3), /* be quiet */ 338 ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */ 339 340 ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ 341 ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ 342 ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ 343 ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ 344 ATA_EHI_POST_SETMODE = (1 << 20), /* revaildating after setmode */ 345 346 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, 347 348 /* mask of flags to transfer *to* the slave link */ 349 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, 350 351 /* max tries if error condition is still set after ->error_handler */ 352 ATA_EH_MAX_TRIES = 5, 353 354 /* sometimes resuming a link requires several retries */ 355 ATA_LINK_RESUME_TRIES = 5, 356 357 /* how hard are we gonna try to probe/recover devices */ 358 ATA_PROBE_MAX_TRIES = 3, 359 ATA_EH_DEV_TRIES = 3, 360 ATA_EH_PMP_TRIES = 5, 361 ATA_EH_PMP_LINK_TRIES = 3, 362 363 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */ 364 365 /* This should match the actual table size of 366 * ata_eh_cmd_timeout_table in libata-eh.c. 367 */ 368 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6, 369 370 /* Horkage types. May be set by libata or controller on drives 371 (some horkage may be drive/controller pair dependant */ 372 373 ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ 374 ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ 375 ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ 376 ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ 377 ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ 378 ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */ 379 ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ 380 ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */ 381 ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */ 382 ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */ 383 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands 384 not multiple of 16 bytes */ 385 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */ 386 ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */ 387 ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */ 388 ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */ 389 ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */ 390 391 /* DMA mask for user DMA control: User visible values; DO NOT 392 renumber */ 393 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ 394 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ 395 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ 396 397 /* ATAPI command types */ 398 ATAPI_READ = 0, /* READs */ 399 ATAPI_WRITE = 1, /* WRITEs */ 400 ATAPI_READ_CD = 2, /* READ CD [MSF] */ 401 ATAPI_PASS_THRU = 3, /* SAT pass-thru */ 402 ATAPI_MISC = 4, /* the rest */ 403 404 /* Timing constants */ 405 ATA_TIMING_SETUP = (1 << 0), 406 ATA_TIMING_ACT8B = (1 << 1), 407 ATA_TIMING_REC8B = (1 << 2), 408 ATA_TIMING_CYC8B = (1 << 3), 409 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | 410 ATA_TIMING_CYC8B, 411 ATA_TIMING_ACTIVE = (1 << 4), 412 ATA_TIMING_RECOVER = (1 << 5), 413 ATA_TIMING_DMACK_HOLD = (1 << 6), 414 ATA_TIMING_CYCLE = (1 << 7), 415 ATA_TIMING_UDMA = (1 << 8), 416 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | 417 ATA_TIMING_REC8B | ATA_TIMING_CYC8B | 418 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | 419 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE | 420 ATA_TIMING_UDMA, 421 422 /* ACPI constants */ 423 ATA_ACPI_FILTER_SETXFER = 1 << 0, 424 ATA_ACPI_FILTER_LOCK = 1 << 1, 425 ATA_ACPI_FILTER_DIPM = 1 << 2, 426 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */ 427 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */ 428 429 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER | 430 ATA_ACPI_FILTER_LOCK | 431 ATA_ACPI_FILTER_DIPM, 432}; 433 434enum ata_xfer_mask { 435 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1) 436 << ATA_SHIFT_PIO, 437 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1) 438 << ATA_SHIFT_MWDMA, 439 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1) 440 << ATA_SHIFT_UDMA, 441}; 442 443enum hsm_task_states { 444 HSM_ST_IDLE, /* no command on going */ 445 HSM_ST_FIRST, /* (waiting the device to) 446 write CDB or first data block */ 447 HSM_ST, /* (waiting the device to) transfer data */ 448 HSM_ST_LAST, /* (waiting the device to) complete command */ 449 HSM_ST_ERR, /* error */ 450}; 451 452enum ata_completion_errors { 453 AC_ERR_DEV = (1 << 0), /* device reported error */ 454 AC_ERR_HSM = (1 << 1), /* host state machine violation */ 455 AC_ERR_TIMEOUT = (1 << 2), /* timeout */ 456 AC_ERR_MEDIA = (1 << 3), /* media error */ 457 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ 458 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ 459 AC_ERR_SYSTEM = (1 << 6), /* system error */ 460 AC_ERR_INVALID = (1 << 7), /* invalid argument */ 461 AC_ERR_OTHER = (1 << 8), /* unknown */ 462 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ 463 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ 464}; 465 466/* 467 * Link power management policy: If you alter this, you also need to 468 * alter libata-scsi.c (for the ascii descriptions) 469 */ 470enum ata_lpm_policy { 471 ATA_LPM_UNKNOWN, 472 ATA_LPM_MAX_POWER, 473 ATA_LPM_MED_POWER, 474 ATA_LPM_MIN_POWER, 475}; 476 477enum ata_lpm_hints { 478 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */ 479 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */ 480}; 481 482/* forward declarations */ 483struct scsi_device; 484struct ata_port_operations; 485struct ata_port; 486struct ata_link; 487struct ata_queued_cmd; 488 489/* typedefs */ 490typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); 491typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); 492typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, 493 unsigned long deadline); 494typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); 495 496extern struct device_attribute dev_attr_link_power_management_policy; 497extern struct device_attribute dev_attr_unload_heads; 498extern struct device_attribute dev_attr_em_message_type; 499extern struct device_attribute dev_attr_em_message; 500extern struct device_attribute dev_attr_sw_activity; 501 502enum sw_activity { 503 OFF, 504 BLINK_ON, 505 BLINK_OFF, 506}; 507 508#ifdef CONFIG_ATA_SFF 509struct ata_ioports { 510 void __iomem *cmd_addr; 511 void __iomem *data_addr; 512 void __iomem *error_addr; 513 void __iomem *feature_addr; 514 void __iomem *nsect_addr; 515 void __iomem *lbal_addr; 516 void __iomem *lbam_addr; 517 void __iomem *lbah_addr; 518 void __iomem *device_addr; 519 void __iomem *status_addr; 520 void __iomem *command_addr; 521 void __iomem *altstatus_addr; 522 void __iomem *ctl_addr; 523#ifdef CONFIG_ATA_BMDMA 524 void __iomem *bmdma_addr; 525#endif /* CONFIG_ATA_BMDMA */ 526 void __iomem *scr_addr; 527}; 528#endif /* CONFIG_ATA_SFF */ 529 530struct ata_host { 531 spinlock_t lock; 532 struct device *dev; 533 void __iomem * const *iomap; 534 unsigned int n_ports; 535 void *private_data; 536 struct ata_port_operations *ops; 537 unsigned long flags; 538#ifdef CONFIG_ATA_ACPI 539 acpi_handle acpi_handle; 540#endif 541 struct ata_port *simplex_claimed; /* channel owning the DMA */ 542 struct ata_port *ports[0]; 543}; 544 545struct ata_queued_cmd { 546 struct ata_port *ap; 547 struct ata_device *dev; 548 549 struct scsi_cmnd *scsicmd; 550 void (*scsidone)(struct scsi_cmnd *); 551 552 struct ata_taskfile tf; 553 u8 cdb[ATAPI_CDB_LEN]; 554 555 unsigned long flags; /* ATA_QCFLAG_xxx */ 556 unsigned int tag; 557 unsigned int n_elem; 558 unsigned int orig_n_elem; 559 560 int dma_dir; 561 562 unsigned int sect_size; 563 564 unsigned int nbytes; 565 unsigned int extrabytes; 566 unsigned int curbytes; 567 568 struct scatterlist *cursg; 569 unsigned int cursg_ofs; 570 571 struct scatterlist sgent; 572 573 struct scatterlist *sg; 574 575 unsigned int err_mask; 576 struct ata_taskfile result_tf; 577 ata_qc_cb_t complete_fn; 578 579 void *private_data; 580 void *lldd_task; 581}; 582 583struct ata_port_stats { 584 unsigned long unhandled_irq; 585 unsigned long idle_irq; 586 unsigned long rw_reqbuf; 587}; 588 589struct ata_ering_entry { 590 unsigned int eflags; 591 unsigned int err_mask; 592 u64 timestamp; 593}; 594 595struct ata_ering { 596 int cursor; 597 struct ata_ering_entry ring[ATA_ERING_SIZE]; 598}; 599 600struct ata_device { 601 struct ata_link *link; 602 unsigned int devno; /* 0 or 1 */ 603 unsigned int horkage; /* List of broken features */ 604 unsigned long flags; /* ATA_DFLAG_xxx */ 605 struct scsi_device *sdev; /* attached SCSI device */ 606 void *private_data; 607#ifdef CONFIG_ATA_ACPI 608 acpi_handle acpi_handle; 609 union acpi_object *gtf_cache; 610 unsigned int gtf_filter; 611#endif 612 struct device tdev; 613 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */ 614 u64 n_sectors; /* size of device, if ATA */ 615 u64 n_native_sectors; /* native size, if ATA */ 616 unsigned int class; /* ATA_DEV_xxx */ 617 unsigned long unpark_deadline; 618 619 u8 pio_mode; 620 u8 dma_mode; 621 u8 xfer_mode; 622 unsigned int xfer_shift; /* ATA_SHIFT_xxx */ 623 624 unsigned int multi_count; /* sectors count for 625 READ/WRITE MULTIPLE */ 626 unsigned int max_sectors; /* per-device max sectors */ 627 unsigned int cdb_len; 628 629 /* per-dev xfer mask */ 630 unsigned long pio_mask; 631 unsigned long mwdma_mask; 632 unsigned long udma_mask; 633 634 /* for CHS addressing */ 635 u16 cylinders; /* Number of cylinders */ 636 u16 heads; /* Number of heads */ 637 u16 sectors; /* Number of sectors per track */ 638 639 union { 640 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ 641 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ 642 }; 643 644 /* error history */ 645 int spdn_cnt; 646 /* ering is CLEAR_END, read comment above CLEAR_END */ 647 struct ata_ering ering; 648}; 649 650/* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are 651 * cleared to zero on ata_dev_init(). 652 */ 653#define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors) 654#define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering) 655 656struct ata_eh_info { 657 struct ata_device *dev; /* offending device */ 658 u32 serror; /* SError from LLDD */ 659 unsigned int err_mask; /* port-wide err_mask */ 660 unsigned int action; /* ATA_EH_* action mask */ 661 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ 662 unsigned int flags; /* ATA_EHI_* flags */ 663 664 unsigned int probe_mask; 665 666 char desc[ATA_EH_DESC_LEN]; 667 int desc_len; 668}; 669 670struct ata_eh_context { 671 struct ata_eh_info i; 672 int tries[ATA_MAX_DEVICES]; 673 int cmd_timeout_idx[ATA_MAX_DEVICES] 674 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE]; 675 unsigned int classes[ATA_MAX_DEVICES]; 676 unsigned int did_probe_mask; 677 unsigned int unloaded_mask; 678 unsigned int saved_ncq_enabled; 679 u8 saved_xfer_mode[ATA_MAX_DEVICES]; 680 /* timestamp for the last reset attempt or success */ 681 unsigned long last_reset; 682}; 683 684struct ata_acpi_drive 685{ 686 u32 pio; 687 u32 dma; 688} __packed; 689 690struct ata_acpi_gtm { 691 struct ata_acpi_drive drive[2]; 692 u32 flags; 693} __packed; 694 695struct ata_link { 696 struct ata_port *ap; 697 int pmp; /* port multiplier port # */ 698 699 struct device tdev; 700 unsigned int active_tag; /* active tag on this link */ 701 u32 sactive; /* active NCQ commands */ 702 703 unsigned int flags; /* ATA_LFLAG_xxx */ 704 705 u32 saved_scontrol; /* SControl on probe */ 706 unsigned int hw_sata_spd_limit; 707 unsigned int sata_spd_limit; 708 unsigned int sata_spd; /* current SATA PHY speed */ 709 enum ata_lpm_policy lpm_policy; 710 711 /* record runtime error info, protected by host_set lock */ 712 struct ata_eh_info eh_info; 713 /* EH context */ 714 struct ata_eh_context eh_context; 715 716 struct ata_device device[ATA_MAX_DEVICES]; 717}; 718#define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag) 719#define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0]) 720 721struct ata_port { 722 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ 723 struct ata_port_operations *ops; 724 spinlock_t *lock; 725 /* Flags owned by the EH context. Only EH should touch these once the 726 port is active */ 727 unsigned long flags; /* ATA_FLAG_xxx */ 728 /* Flags that change dynamically, protected by ap->lock */ 729 unsigned int pflags; /* ATA_PFLAG_xxx */ 730 unsigned int print_id; /* user visible unique port ID */ 731 unsigned int port_no; /* 0 based port no. inside the host */ 732 733#ifdef CONFIG_ATA_SFF 734 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ 735 u8 ctl; /* cache of ATA control register */ 736 u8 last_ctl; /* Cache last written value */ 737 struct ata_link* sff_pio_task_link; /* link currently used */ 738 struct delayed_work sff_pio_task; 739#ifdef CONFIG_ATA_BMDMA 740 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */ 741 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */ 742#endif /* CONFIG_ATA_BMDMA */ 743#endif /* CONFIG_ATA_SFF */ 744 745 unsigned int pio_mask; 746 unsigned int mwdma_mask; 747 unsigned int udma_mask; 748 unsigned int cbl; /* cable type; ATA_CBL_xxx */ 749 750 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; 751 unsigned long qc_allocated; 752 unsigned int qc_active; 753 int nr_active_links; /* #links with active qcs */ 754 755 struct ata_link link; /* host default link */ 756 struct ata_link *slave_link; /* see ata_slave_link_init() */ 757 758 int nr_pmp_links; /* nr of available PMP links */ 759 struct ata_link *pmp_link; /* array of PMP links */ 760 struct ata_link *excl_link; /* for PMP qc exclusion */ 761 762 struct ata_port_stats stats; 763 struct ata_host *host; 764 struct device *dev; 765 struct device tdev; 766 767 struct mutex scsi_scan_mutex; 768 struct delayed_work hotplug_task; 769 struct work_struct scsi_rescan_task; 770 771 unsigned int hsm_task_state; 772 773 u32 msg_enable; 774 struct list_head eh_done_q; 775 wait_queue_head_t eh_wait_q; 776 int eh_tries; 777 struct completion park_req_pending; 778 779 pm_message_t pm_mesg; 780 int *pm_result; 781 enum ata_lpm_policy target_lpm_policy; 782 783 struct timer_list fastdrain_timer; 784 unsigned long fastdrain_cnt; 785 786 int em_message_type; 787 void *private_data; 788 789#ifdef CONFIG_ATA_ACPI 790 acpi_handle acpi_handle; 791 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */ 792#endif 793 /* owned by EH */ 794 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned; 795}; 796 797/* The following initializer overrides a method to NULL whether one of 798 * its parent has the method defined or not. This is equivalent to 799 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant 800 * expression and thus can't be used as an initializer. 801 */ 802#define ATA_OP_NULL (void *)(unsigned long)(-ENOENT) 803 804struct ata_port_operations { 805 /* 806 * Command execution 807 */ 808 int (*qc_defer)(struct ata_queued_cmd *qc); 809 int (*check_atapi_dma)(struct ata_queued_cmd *qc); 810 void (*qc_prep)(struct ata_queued_cmd *qc); 811 unsigned int (*qc_issue)(struct ata_queued_cmd *qc); 812 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc); 813 814 /* 815 * Configuration and exception handling 816 */ 817 int (*cable_detect)(struct ata_port *ap); 818 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask); 819 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev); 820 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev); 821 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev); 822 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id); 823 824 void (*dev_config)(struct ata_device *dev); 825 826 void (*freeze)(struct ata_port *ap); 827 void (*thaw)(struct ata_port *ap); 828 ata_prereset_fn_t prereset; 829 ata_reset_fn_t softreset; 830 ata_reset_fn_t hardreset; 831 ata_postreset_fn_t postreset; 832 ata_prereset_fn_t pmp_prereset; 833 ata_reset_fn_t pmp_softreset; 834 ata_reset_fn_t pmp_hardreset; 835 ata_postreset_fn_t pmp_postreset; 836 void (*error_handler)(struct ata_port *ap); 837 void (*lost_interrupt)(struct ata_port *ap); 838 void (*post_internal_cmd)(struct ata_queued_cmd *qc); 839 840 /* 841 * Optional features 842 */ 843 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val); 844 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val); 845 void (*pmp_attach)(struct ata_port *ap); 846 void (*pmp_detach)(struct ata_port *ap); 847 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy, 848 unsigned hints); 849 850 /* 851 * Start, stop, suspend and resume 852 */ 853 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg); 854 int (*port_resume)(struct ata_port *ap); 855 int (*port_start)(struct ata_port *ap); 856 void (*port_stop)(struct ata_port *ap); 857 void (*host_stop)(struct ata_host *host); 858 859#ifdef CONFIG_ATA_SFF 860 /* 861 * SFF / taskfile oriented ops 862 */ 863 void (*sff_dev_select)(struct ata_port *ap, unsigned int device); 864 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl); 865 u8 (*sff_check_status)(struct ata_port *ap); 866 u8 (*sff_check_altstatus)(struct ata_port *ap); 867 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf); 868 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf); 869 void (*sff_exec_command)(struct ata_port *ap, 870 const struct ata_taskfile *tf); 871 unsigned int (*sff_data_xfer)(struct ata_device *dev, 872 unsigned char *buf, unsigned int buflen, int rw); 873 void (*sff_irq_on)(struct ata_port *); 874 bool (*sff_irq_check)(struct ata_port *); 875 void (*sff_irq_clear)(struct ata_port *); 876 void (*sff_drain_fifo)(struct ata_queued_cmd *qc); 877 878#ifdef CONFIG_ATA_BMDMA 879 void (*bmdma_setup)(struct ata_queued_cmd *qc); 880 void (*bmdma_start)(struct ata_queued_cmd *qc); 881 void (*bmdma_stop)(struct ata_queued_cmd *qc); 882 u8 (*bmdma_status)(struct ata_port *ap); 883#endif /* CONFIG_ATA_BMDMA */ 884#endif /* CONFIG_ATA_SFF */ 885 886 ssize_t (*em_show)(struct ata_port *ap, char *buf); 887 ssize_t (*em_store)(struct ata_port *ap, const char *message, 888 size_t size); 889 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf); 890 ssize_t (*sw_activity_store)(struct ata_device *dev, 891 enum sw_activity val); 892 /* 893 * Obsolete 894 */ 895 void (*phy_reset)(struct ata_port *ap); 896 void (*eng_timeout)(struct ata_port *ap); 897 898 /* 899 * ->inherits must be the last field and all the preceding 900 * fields must be pointers. 901 */ 902 const struct ata_port_operations *inherits; 903}; 904 905struct ata_port_info { 906 unsigned long flags; 907 unsigned long link_flags; 908 unsigned long pio_mask; 909 unsigned long mwdma_mask; 910 unsigned long udma_mask; 911 struct ata_port_operations *port_ops; 912 void *private_data; 913}; 914 915struct ata_timing { 916 unsigned short mode; /* ATA mode */ 917 unsigned short setup; /* t1 */ 918 unsigned short act8b; /* t2 for 8-bit I/O */ 919 unsigned short rec8b; /* t2i for 8-bit I/O */ 920 unsigned short cyc8b; /* t0 for 8-bit I/O */ 921 unsigned short active; /* t2 or tD */ 922 unsigned short recover; /* t2i or tK */ 923 unsigned short dmack_hold; /* tj */ 924 unsigned short cycle; /* t0 */ 925 unsigned short udma; /* t2CYCTYP/2 */ 926}; 927 928/* 929 * Core layer - drivers/ata/libata-core.c 930 */ 931extern const unsigned long sata_deb_timing_normal[]; 932extern const unsigned long sata_deb_timing_hotplug[]; 933extern const unsigned long sata_deb_timing_long[]; 934 935extern struct ata_port_operations ata_dummy_port_ops; 936extern const struct ata_port_info ata_dummy_port_info; 937 938static inline const unsigned long * 939sata_ehc_deb_timing(struct ata_eh_context *ehc) 940{ 941 if (ehc->i.flags & ATA_EHI_HOTPLUGGED) 942 return sata_deb_timing_hotplug; 943 else 944 return sata_deb_timing_normal; 945} 946 947static inline int ata_port_is_dummy(struct ata_port *ap) 948{ 949 return ap->ops == &ata_dummy_port_ops; 950} 951 952extern int sata_set_spd(struct ata_link *link); 953extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); 954extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, 955 int (*check_ready)(struct ata_link *link)); 956extern int sata_link_debounce(struct ata_link *link, 957 const unsigned long *params, unsigned long deadline); 958extern int sata_link_resume(struct ata_link *link, const unsigned long *params, 959 unsigned long deadline); 960extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy, 961 bool spm_wakeup); 962extern int sata_link_hardreset(struct ata_link *link, 963 const unsigned long *timing, unsigned long deadline, 964 bool *online, int (*check_ready)(struct ata_link *)); 965extern int sata_std_hardreset(struct ata_link *link, unsigned int *class, 966 unsigned long deadline); 967extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); 968 969extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports); 970extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, 971 const struct ata_port_info * const * ppi, int n_ports); 972extern int ata_slave_link_init(struct ata_port *ap); 973extern int ata_host_start(struct ata_host *host); 974extern int ata_host_register(struct ata_host *host, 975 struct scsi_host_template *sht); 976extern int ata_host_activate(struct ata_host *host, int irq, 977 irq_handler_t irq_handler, unsigned long irq_flags, 978 struct scsi_host_template *sht); 979extern void ata_host_detach(struct ata_host *host); 980extern void ata_host_init(struct ata_host *, struct device *, 981 unsigned long, struct ata_port_operations *); 982extern int ata_scsi_detect(struct scsi_host_template *sht); 983extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); 984extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)); 985extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev, 986 int cmd, void __user *arg); 987extern void ata_sas_port_destroy(struct ata_port *); 988extern struct ata_port *ata_sas_port_alloc(struct ata_host *, 989 struct ata_port_info *, struct Scsi_Host *); 990extern int ata_sas_port_init(struct ata_port *); 991extern int ata_sas_port_start(struct ata_port *ap); 992extern void ata_sas_port_stop(struct ata_port *ap); 993extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); 994extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), 995 struct ata_port *ap); 996extern int sata_scr_valid(struct ata_link *link); 997extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); 998extern int sata_scr_write(struct ata_link *link, int reg, u32 val); 999extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); 1000extern bool ata_link_online(struct ata_link *link); 1001extern bool ata_link_offline(struct ata_link *link); 1002#ifdef CONFIG_PM 1003extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg); 1004extern void ata_host_resume(struct ata_host *host); 1005#endif 1006extern int ata_ratelimit(void); 1007extern u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val, 1008 unsigned long interval, unsigned long timeout); 1009extern int atapi_cmd_type(u8 opcode); 1010extern void ata_tf_to_fis(const struct ata_taskfile *tf, 1011 u8 pmp, int is_cmd, u8 *fis); 1012extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); 1013extern unsigned long ata_pack_xfermask(unsigned long pio_mask, 1014 unsigned long mwdma_mask, unsigned long udma_mask); 1015extern void ata_unpack_xfermask(unsigned long xfer_mask, 1016 unsigned long *pio_mask, unsigned long *mwdma_mask, 1017 unsigned long *udma_mask); 1018extern u8 ata_xfer_mask2mode(unsigned long xfer_mask); 1019extern unsigned long ata_xfer_mode2mask(u8 xfer_mode); 1020extern int ata_xfer_mode2shift(unsigned long xfer_mode); 1021extern const char *ata_mode_string(unsigned long xfer_mask); 1022extern unsigned long ata_id_xfermask(const u16 *id); 1023extern int ata_std_qc_defer(struct ata_queued_cmd *qc); 1024extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); 1025extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, 1026 unsigned int n_elem); 1027extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); 1028extern void ata_dev_disable(struct ata_device *adev); 1029extern void ata_id_string(const u16 *id, unsigned char *s, 1030 unsigned int ofs, unsigned int len); 1031extern void ata_id_c_string(const u16 *id, unsigned char *s, 1032 unsigned int ofs, unsigned int len); 1033extern unsigned int ata_do_dev_read_id(struct ata_device *dev, 1034 struct ata_taskfile *tf, u16 *id); 1035extern void ata_qc_complete(struct ata_queued_cmd *qc); 1036extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active); 1037extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd, 1038 void (*done)(struct scsi_cmnd *)); 1039extern int ata_std_bios_param(struct scsi_device *sdev, 1040 struct block_device *bdev, 1041 sector_t capacity, int geom[]); 1042extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev); 1043extern int ata_scsi_slave_config(struct scsi_device *sdev); 1044extern void ata_scsi_slave_destroy(struct scsi_device *sdev); 1045extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, 1046 int queue_depth, int reason); 1047extern struct ata_device *ata_dev_pair(struct ata_device *adev); 1048extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); 1049 1050extern int ata_cable_40wire(struct ata_port *ap); 1051extern int ata_cable_80wire(struct ata_port *ap); 1052extern int ata_cable_sata(struct ata_port *ap); 1053extern int ata_cable_ignore(struct ata_port *ap); 1054extern int ata_cable_unknown(struct ata_port *ap); 1055 1056/* Timing helpers */ 1057extern unsigned int ata_pio_need_iordy(const struct ata_device *); 1058extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); 1059extern int ata_timing_compute(struct ata_device *, unsigned short, 1060 struct ata_timing *, int, int); 1061extern void ata_timing_merge(const struct ata_timing *, 1062 const struct ata_timing *, struct ata_timing *, 1063 unsigned int); 1064extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); 1065 1066/* PCI */ 1067#ifdef CONFIG_PCI 1068struct pci_dev; 1069 1070struct pci_bits { 1071 unsigned int reg; /* PCI config register to read */ 1072 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ 1073 unsigned long mask; 1074 unsigned long val; 1075}; 1076 1077extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); 1078extern void ata_pci_remove_one(struct pci_dev *pdev); 1079 1080#ifdef CONFIG_PM 1081extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); 1082extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); 1083extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); 1084extern int ata_pci_device_resume(struct pci_dev *pdev); 1085#endif /* CONFIG_PM */ 1086#endif /* CONFIG_PCI */ 1087 1088/* 1089 * ACPI - drivers/ata/libata-acpi.c 1090 */ 1091#ifdef CONFIG_ATA_ACPI 1092static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1093{ 1094 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) 1095 return &ap->__acpi_init_gtm; 1096 return NULL; 1097} 1098int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); 1099int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); 1100unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, 1101 const struct ata_acpi_gtm *gtm); 1102int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm); 1103#else 1104static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1105{ 1106 return NULL; 1107} 1108 1109static inline int ata_acpi_stm(const struct ata_port *ap, 1110 struct ata_acpi_gtm *stm) 1111{ 1112 return -ENOSYS; 1113} 1114 1115static inline int ata_acpi_gtm(const struct ata_port *ap, 1116 struct ata_acpi_gtm *stm) 1117{ 1118 return -ENOSYS; 1119} 1120 1121static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, 1122 const struct ata_acpi_gtm *gtm) 1123{ 1124 return 0; 1125} 1126 1127static inline int ata_acpi_cbl_80wire(struct ata_port *ap, 1128 const struct ata_acpi_gtm *gtm) 1129{ 1130 return 0; 1131} 1132#endif 1133 1134/* 1135 * EH - drivers/ata/libata-eh.c 1136 */ 1137extern void ata_port_schedule_eh(struct ata_port *ap); 1138extern int ata_link_abort(struct ata_link *link); 1139extern int ata_port_abort(struct ata_port *ap); 1140extern int ata_port_freeze(struct ata_port *ap); 1141extern int sata_async_notification(struct ata_port *ap); 1142 1143extern void ata_eh_freeze_port(struct ata_port *ap); 1144extern void ata_eh_thaw_port(struct ata_port *ap); 1145 1146extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); 1147extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); 1148extern void ata_eh_analyze_ncq_error(struct ata_link *link); 1149 1150extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, 1151 ata_reset_fn_t softreset, ata_reset_fn_t hardreset, 1152 ata_postreset_fn_t postreset); 1153extern void ata_std_error_handler(struct ata_port *ap); 1154 1155/* 1156 * Base operations to inherit from and initializers for sht 1157 * 1158 * Operations 1159 * 1160 * base : Common to all libata drivers. 1161 * sata : SATA controllers w/ native interface. 1162 * pmp : SATA controllers w/ PMP support. 1163 * sff : SFF ATA controllers w/o BMDMA support. 1164 * bmdma : SFF ATA controllers w/ BMDMA support. 1165 * 1166 * sht initializers 1167 * 1168 * BASE : Common to all libata drivers. The user must set 1169 * sg_tablesize and dma_boundary. 1170 * PIO : SFF ATA controllers w/ only PIO support. 1171 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and 1172 * dma_boundary are set to BMDMA limits. 1173 * NCQ : SATA controllers supporting NCQ. The user must set 1174 * sg_tablesize, dma_boundary and can_queue. 1175 */ 1176extern const struct ata_port_operations ata_base_port_ops; 1177extern const struct ata_port_operations sata_port_ops; 1178extern struct device_attribute *ata_common_sdev_attrs[]; 1179 1180#define ATA_BASE_SHT(drv_name) \ 1181 .module = THIS_MODULE, \ 1182 .name = drv_name, \ 1183 .ioctl = ata_scsi_ioctl, \ 1184 .queuecommand = ata_scsi_queuecmd, \ 1185 .can_queue = ATA_DEF_QUEUE, \ 1186 .this_id = ATA_SHT_THIS_ID, \ 1187 .cmd_per_lun = ATA_SHT_CMD_PER_LUN, \ 1188 .emulated = ATA_SHT_EMULATED, \ 1189 .use_clustering = ATA_SHT_USE_CLUSTERING, \ 1190 .proc_name = drv_name, \ 1191 .slave_configure = ata_scsi_slave_config, \ 1192 .slave_destroy = ata_scsi_slave_destroy, \ 1193 .bios_param = ata_std_bios_param, \ 1194 .unlock_native_capacity = ata_scsi_unlock_native_capacity, \ 1195 .sdev_attrs = ata_common_sdev_attrs 1196 1197#define ATA_NCQ_SHT(drv_name) \ 1198 ATA_BASE_SHT(drv_name), \ 1199 .change_queue_depth = ata_scsi_change_queue_depth 1200 1201/* 1202 * PMP helpers 1203 */ 1204#ifdef CONFIG_SATA_PMP 1205static inline bool sata_pmp_supported(struct ata_port *ap) 1206{ 1207 return ap->flags & ATA_FLAG_PMP; 1208} 1209 1210static inline bool sata_pmp_attached(struct ata_port *ap) 1211{ 1212 return ap->nr_pmp_links != 0; 1213} 1214 1215static inline int ata_is_host_link(const struct ata_link *link) 1216{ 1217 return link == &link->ap->link || link == link->ap->slave_link; 1218} 1219#else /* CONFIG_SATA_PMP */ 1220static inline bool sata_pmp_supported(struct ata_port *ap) 1221{ 1222 return false; 1223} 1224 1225static inline bool sata_pmp_attached(struct ata_port *ap) 1226{ 1227 return false; 1228} 1229 1230static inline int ata_is_host_link(const struct ata_link *link) 1231{ 1232 return 1; 1233} 1234#endif /* CONFIG_SATA_PMP */ 1235 1236static inline int sata_srst_pmp(struct ata_link *link) 1237{ 1238 if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) 1239 return SATA_PMP_CTRL_PORT; 1240 return link->pmp; 1241} 1242 1243/* 1244 * printk helpers 1245 */ 1246#define ata_port_printk(ap, lv, fmt, args...) \ 1247 printk("%sata%u: "fmt, lv, (ap)->print_id , ##args) 1248 1249#define ata_link_printk(link, lv, fmt, args...) do { \ 1250 if (sata_pmp_attached((link)->ap) || (link)->ap->slave_link) \ 1251 printk("%sata%u.%02u: "fmt, lv, (link)->ap->print_id, \ 1252 (link)->pmp , ##args); \ 1253 else \ 1254 printk("%sata%u: "fmt, lv, (link)->ap->print_id , ##args); \ 1255 } while(0) 1256 1257#define ata_dev_printk(dev, lv, fmt, args...) \ 1258 printk("%sata%u.%02u: "fmt, lv, (dev)->link->ap->print_id, \ 1259 (dev)->link->pmp + (dev)->devno , ##args) 1260 1261/* 1262 * ata_eh_info helpers 1263 */ 1264extern void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) 1265 __attribute__ ((format (printf, 2, 3))); 1266extern void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) 1267 __attribute__ ((format (printf, 2, 3))); 1268extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); 1269 1270static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) 1271{ 1272 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; 1273 ehi->flags |= ATA_EHI_HOTPLUGGED; 1274 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK; 1275 ehi->err_mask |= AC_ERR_ATA_BUS; 1276} 1277 1278/* 1279 * port description helpers 1280 */ 1281extern void ata_port_desc(struct ata_port *ap, const char *fmt, ...) 1282 __attribute__ ((format (printf, 2, 3))); 1283#ifdef CONFIG_PCI 1284extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, 1285 const char *name); 1286#endif 1287 1288static inline unsigned int ata_tag_valid(unsigned int tag) 1289{ 1290 return (tag < ATA_MAX_QUEUE) ? 1 : 0; 1291} 1292 1293static inline unsigned int ata_tag_internal(unsigned int tag) 1294{ 1295 return tag == ATA_TAG_INTERNAL; 1296} 1297 1298/* 1299 * device helpers 1300 */ 1301static inline unsigned int ata_class_enabled(unsigned int class) 1302{ 1303 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || 1304 class == ATA_DEV_PMP || class == ATA_DEV_SEMB; 1305} 1306 1307static inline unsigned int ata_class_disabled(unsigned int class) 1308{ 1309 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || 1310 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP; 1311} 1312 1313static inline unsigned int ata_class_absent(unsigned int class) 1314{ 1315 return !ata_class_enabled(class) && !ata_class_disabled(class); 1316} 1317 1318static inline unsigned int ata_dev_enabled(const struct ata_device *dev) 1319{ 1320 return ata_class_enabled(dev->class); 1321} 1322 1323static inline unsigned int ata_dev_disabled(const struct ata_device *dev) 1324{ 1325 return ata_class_disabled(dev->class); 1326} 1327 1328static inline unsigned int ata_dev_absent(const struct ata_device *dev) 1329{ 1330 return ata_class_absent(dev->class); 1331} 1332 1333/* 1334 * link helpers 1335 */ 1336static inline int ata_link_max_devices(const struct ata_link *link) 1337{ 1338 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) 1339 return 2; 1340 return 1; 1341} 1342 1343static inline int ata_link_active(struct ata_link *link) 1344{ 1345 return ata_tag_valid(link->active_tag) || link->sactive; 1346} 1347 1348/* 1349 * Iterators 1350 * 1351 * ATA_LITER_* constants are used to select link iteration mode and 1352 * ATA_DITER_* device iteration mode. 1353 * 1354 * For a custom iteration directly using ata_{link|dev}_next(), if 1355 * @link or @dev, respectively, is NULL, the first element is 1356 * returned. @dev and @link can be any valid device or link and the 1357 * next element according to the iteration mode will be returned. 1358 * After the last element, NULL is returned. 1359 */ 1360enum ata_link_iter_mode { 1361 ATA_LITER_EDGE, /* if present, PMP links only; otherwise, 1362 * host link. no slave link */ 1363 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */ 1364 ATA_LITER_PMP_FIRST, /* PMP links followed by host link, 1365 * slave link still comes after host link */ 1366}; 1367 1368enum ata_dev_iter_mode { 1369 ATA_DITER_ENABLED, 1370 ATA_DITER_ENABLED_REVERSE, 1371 ATA_DITER_ALL, 1372 ATA_DITER_ALL_REVERSE, 1373}; 1374 1375extern struct ata_link *ata_link_next(struct ata_link *link, 1376 struct ata_port *ap, 1377 enum ata_link_iter_mode mode); 1378 1379extern struct ata_device *ata_dev_next(struct ata_device *dev, 1380 struct ata_link *link, 1381 enum ata_dev_iter_mode mode); 1382 1383/* 1384 * Shortcut notation for iterations 1385 * 1386 * ata_for_each_link() iterates over each link of @ap according to 1387 * @mode. @link points to the current link in the loop. @link is 1388 * NULL after loop termination. ata_for_each_dev() works the same way 1389 * except that it iterates over each device of @link. 1390 * 1391 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be 1392 * specified when using the following shorthand notations. Only the 1393 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be 1394 * specified. This not only increases brevity but also makes it 1395 * impossible to use ATA_LITER_* for device iteration or vice-versa. 1396 */ 1397#define ata_for_each_link(link, ap, mode) \ 1398 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \ 1399 (link) = ata_link_next((link), (ap), ATA_LITER_##mode)) 1400 1401#define ata_for_each_dev(dev, link, mode) \ 1402 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \ 1403 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode)) 1404 1405/** 1406 * ata_ncq_enabled - Test whether NCQ is enabled 1407 * @dev: ATA device to test for 1408 * 1409 * LOCKING: 1410 * spin_lock_irqsave(host lock) 1411 * 1412 * RETURNS: 1413 * 1 if NCQ is enabled for @dev, 0 otherwise. 1414 */ 1415static inline int ata_ncq_enabled(struct ata_device *dev) 1416{ 1417 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | 1418 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; 1419} 1420 1421static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) 1422{ 1423 qc->tf.ctl |= ATA_NIEN; 1424} 1425 1426static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, 1427 unsigned int tag) 1428{ 1429 if (likely(ata_tag_valid(tag))) 1430 return &ap->qcmd[tag]; 1431 return NULL; 1432} 1433 1434static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, 1435 unsigned int tag) 1436{ 1437 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); 1438 1439 if (unlikely(!qc) || !ap->ops->error_handler) 1440 return qc; 1441 1442 if ((qc->flags & (ATA_QCFLAG_ACTIVE | 1443 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) 1444 return qc; 1445 1446 return NULL; 1447} 1448 1449static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc) 1450{ 1451 return qc->nbytes - min(qc->extrabytes, qc->nbytes); 1452} 1453 1454static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) 1455{ 1456 memset(tf, 0, sizeof(*tf)); 1457 1458#ifdef CONFIG_ATA_SFF 1459 tf->ctl = dev->link->ap->ctl; 1460#else 1461 tf->ctl = ATA_DEVCTL_OBS; 1462#endif 1463 if (dev->devno == 0) 1464 tf->device = ATA_DEVICE_OBS; 1465 else 1466 tf->device = ATA_DEVICE_OBS | ATA_DEV1; 1467} 1468 1469static inline void ata_qc_reinit(struct ata_queued_cmd *qc) 1470{ 1471 qc->dma_dir = DMA_NONE; 1472 qc->sg = NULL; 1473 qc->flags = 0; 1474 qc->cursg = NULL; 1475 qc->cursg_ofs = 0; 1476 qc->nbytes = qc->extrabytes = qc->curbytes = 0; 1477 qc->n_elem = 0; 1478 qc->err_mask = 0; 1479 qc->sect_size = ATA_SECT_SIZE; 1480 1481 ata_tf_init(qc->dev, &qc->tf); 1482 1483 /* init result_tf such that it indicates normal completion */ 1484 qc->result_tf.command = ATA_DRDY; 1485 qc->result_tf.feature = 0; 1486} 1487 1488static inline int ata_try_flush_cache(const struct ata_device *dev) 1489{ 1490 return ata_id_wcache_enabled(dev->id) || 1491 ata_id_has_flush(dev->id) || 1492 ata_id_has_flush_ext(dev->id); 1493} 1494 1495static inline unsigned int ac_err_mask(u8 status) 1496{ 1497 if (status & (ATA_BUSY | ATA_DRQ)) 1498 return AC_ERR_HSM; 1499 if (status & (ATA_ERR | ATA_DF)) 1500 return AC_ERR_DEV; 1501 return 0; 1502} 1503 1504static inline unsigned int __ac_err_mask(u8 status) 1505{ 1506 unsigned int mask = ac_err_mask(status); 1507 if (mask == 0) 1508 return AC_ERR_OTHER; 1509 return mask; 1510} 1511 1512static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) 1513{ 1514 return *(struct ata_port **)&host->hostdata[0]; 1515} 1516 1517static inline int ata_check_ready(u8 status) 1518{ 1519 if (!(status & ATA_BUSY)) 1520 return 1; 1521 1522 /* 0xff indicates either no device or device not ready */ 1523 if (status == 0xff) 1524 return -ENODEV; 1525 1526 return 0; 1527} 1528 1529static inline unsigned long ata_deadline(unsigned long from_jiffies, 1530 unsigned long timeout_msecs) 1531{ 1532 return from_jiffies + msecs_to_jiffies(timeout_msecs); 1533} 1534 1535/* Don't open code these in drivers as there are traps. Firstly the range may 1536 change in future hardware and specs, secondly 0xFF means 'no DMA' but is 1537 > UDMA_0. Dyma ddreigiau */ 1538 1539static inline int ata_using_mwdma(struct ata_device *adev) 1540{ 1541 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4) 1542 return 1; 1543 return 0; 1544} 1545 1546static inline int ata_using_udma(struct ata_device *adev) 1547{ 1548 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7) 1549 return 1; 1550 return 0; 1551} 1552 1553static inline int ata_dma_enabled(struct ata_device *adev) 1554{ 1555 return (adev->dma_mode == 0xFF ? 0 : 1); 1556} 1557 1558/************************************************************************** 1559 * PMP - drivers/ata/libata-pmp.c 1560 */ 1561#ifdef CONFIG_SATA_PMP 1562 1563extern const struct ata_port_operations sata_pmp_port_ops; 1564 1565extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); 1566extern void sata_pmp_error_handler(struct ata_port *ap); 1567 1568#else /* CONFIG_SATA_PMP */ 1569 1570#define sata_pmp_port_ops sata_port_ops 1571#define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer 1572#define sata_pmp_error_handler ata_std_error_handler 1573 1574#endif /* CONFIG_SATA_PMP */ 1575 1576 1577/************************************************************************** 1578 * SFF - drivers/ata/libata-sff.c 1579 */ 1580#ifdef CONFIG_ATA_SFF 1581 1582extern const struct ata_port_operations ata_sff_port_ops; 1583extern const struct ata_port_operations ata_bmdma32_port_ops; 1584 1585/* PIO only, sg_tablesize and dma_boundary limits can be removed */ 1586#define ATA_PIO_SHT(drv_name) \ 1587 ATA_BASE_SHT(drv_name), \ 1588 .sg_tablesize = LIBATA_MAX_PRD, \ 1589 .dma_boundary = ATA_DMA_BOUNDARY 1590 1591extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); 1592extern u8 ata_sff_check_status(struct ata_port *ap); 1593extern void ata_sff_pause(struct ata_port *ap); 1594extern void ata_sff_dma_pause(struct ata_port *ap); 1595extern int ata_sff_busy_sleep(struct ata_port *ap, 1596 unsigned long timeout_pat, unsigned long timeout); 1597extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline); 1598extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); 1599extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf); 1600extern void ata_sff_exec_command(struct ata_port *ap, 1601 const struct ata_taskfile *tf); 1602extern unsigned int ata_sff_data_xfer(struct ata_device *dev, 1603 unsigned char *buf, unsigned int buflen, int rw); 1604extern unsigned int ata_sff_data_xfer32(struct ata_device *dev, 1605 unsigned char *buf, unsigned int buflen, int rw); 1606extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev, 1607 unsigned char *buf, unsigned int buflen, int rw); 1608extern void ata_sff_irq_on(struct ata_port *ap); 1609extern void ata_sff_irq_clear(struct ata_port *ap); 1610extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, 1611 u8 status, int in_wq); 1612extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay); 1613extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); 1614extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); 1615extern unsigned int ata_sff_port_intr(struct ata_port *ap, 1616 struct ata_queued_cmd *qc); 1617extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); 1618extern void ata_sff_lost_interrupt(struct ata_port *ap); 1619extern void ata_sff_freeze(struct ata_port *ap); 1620extern void ata_sff_thaw(struct ata_port *ap); 1621extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline); 1622extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, 1623 u8 *r_err); 1624extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask, 1625 unsigned long deadline); 1626extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes, 1627 unsigned long deadline); 1628extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class, 1629 unsigned long deadline); 1630extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes); 1631extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc); 1632extern void ata_sff_error_handler(struct ata_port *ap); 1633extern void ata_sff_std_ports(struct ata_ioports *ioaddr); 1634#ifdef CONFIG_PCI 1635extern int ata_pci_sff_init_host(struct ata_host *host); 1636extern int ata_pci_sff_prepare_host(struct pci_dev *pdev, 1637 const struct ata_port_info * const * ppi, 1638 struct ata_host **r_host); 1639extern int ata_pci_sff_activate_host(struct ata_host *host, 1640 irq_handler_t irq_handler, 1641 struct scsi_host_template *sht); 1642extern int ata_pci_sff_init_one(struct pci_dev *pdev, 1643 const struct ata_port_info * const * ppi, 1644 struct scsi_host_template *sht, void *host_priv, int hflags); 1645#endif /* CONFIG_PCI */ 1646 1647#ifdef CONFIG_ATA_BMDMA 1648 1649extern const struct ata_port_operations ata_bmdma_port_ops; 1650 1651#define ATA_BMDMA_SHT(drv_name) \ 1652 ATA_BASE_SHT(drv_name), \ 1653 .sg_tablesize = LIBATA_MAX_PRD, \ 1654 .dma_boundary = ATA_DMA_BOUNDARY 1655 1656extern void ata_bmdma_qc_prep(struct ata_queued_cmd *qc); 1657extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc); 1658extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc); 1659extern unsigned int ata_bmdma_port_intr(struct ata_port *ap, 1660 struct ata_queued_cmd *qc); 1661extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance); 1662extern void ata_bmdma_error_handler(struct ata_port *ap); 1663extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc); 1664extern void ata_bmdma_irq_clear(struct ata_port *ap); 1665extern void ata_bmdma_setup(struct ata_queued_cmd *qc); 1666extern void ata_bmdma_start(struct ata_queued_cmd *qc); 1667extern void ata_bmdma_stop(struct ata_queued_cmd *qc); 1668extern u8 ata_bmdma_status(struct ata_port *ap); 1669extern int ata_bmdma_port_start(struct ata_port *ap); 1670extern int ata_bmdma_port_start32(struct ata_port *ap); 1671 1672#ifdef CONFIG_PCI 1673extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); 1674extern void ata_pci_bmdma_init(struct ata_host *host); 1675extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev, 1676 const struct ata_port_info * const * ppi, 1677 struct ata_host **r_host); 1678extern int ata_pci_bmdma_init_one(struct pci_dev *pdev, 1679 const struct ata_port_info * const * ppi, 1680 struct scsi_host_template *sht, 1681 void *host_priv, int hflags); 1682#endif /* CONFIG_PCI */ 1683#endif /* CONFIG_ATA_BMDMA */ 1684 1685/** 1686 * ata_sff_busy_wait - Wait for a port status register 1687 * @ap: Port to wait for. 1688 * @bits: bits that must be clear 1689 * @max: number of 10uS waits to perform 1690 * 1691 * Waits up to max*10 microseconds for the selected bits in the port's 1692 * status register to be cleared. 1693 * Returns final value of status register. 1694 * 1695 * LOCKING: 1696 * Inherited from caller. 1697 */ 1698static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits, 1699 unsigned int max) 1700{ 1701 u8 status; 1702 1703 do { 1704 udelay(10); 1705 status = ap->ops->sff_check_status(ap); 1706 max--; 1707 } while (status != 0xff && (status & bits) && (max > 0)); 1708 1709 return status; 1710} 1711 1712/** 1713 * ata_wait_idle - Wait for a port to be idle. 1714 * @ap: Port to wait for. 1715 * 1716 * Waits up to 10ms for port's BUSY and DRQ signals to clear. 1717 * Returns final value of status register. 1718 * 1719 * LOCKING: 1720 * Inherited from caller. 1721 */ 1722static inline u8 ata_wait_idle(struct ata_port *ap) 1723{ 1724 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); 1725 1726#ifdef ATA_DEBUG 1727 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) 1728 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n", 1729 status); 1730#endif 1731 1732 return status; 1733} 1734#endif /* CONFIG_ATA_SFF */ 1735 1736#endif /* __LINUX_LIBATA_H__ */ 1737