1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Copyright 2003-2005 Red Hat, Inc. All rights reserved. 4 * Copyright 2003-2005 Jeff Garzik 5 * 6 * libata documentation is available via 'make {ps|pdf}docs', 7 * as Documentation/driver-api/libata.rst 8 */ 9 10 #ifndef __LINUX_LIBATA_H__ 11 #define __LINUX_LIBATA_H__ 12 13 #include <linux/delay.h> 14 #include <linux/jiffies.h> 15 #include <linux/interrupt.h> 16 #include <linux/dma-mapping.h> 17 #include <linux/scatterlist.h> 18 #include <linux/io.h> 19 #include <linux/ata.h> 20 #include <linux/workqueue.h> 21 #include <scsi/scsi_host.h> 22 #include <linux/acpi.h> 23 #include <linux/cdrom.h> 24 #include <linux/sched.h> 25 #include <linux/async.h> 26 27 /* 28 * Define if arch has non-standard setup. This is a _PCI_ standard 29 * not a legacy or ISA standard. 30 */ 31 #ifdef CONFIG_ATA_NONSTANDARD 32 #include <asm/libata-portmap.h> 33 #else 34 #define ATA_PRIMARY_IRQ(dev) 14 35 #define ATA_SECONDARY_IRQ(dev) 15 36 #endif 37 38 /* 39 * compile-time options: to be removed as soon as all the drivers are 40 * converted to the new debugging mechanism 41 */ 42 #undef ATA_IRQ_TRAP /* define to ack screaming irqs */ 43 44 45 #define ata_print_version_once(dev, version) \ 46 ({ \ 47 static bool __print_once; \ 48 \ 49 if (!__print_once) { \ 50 __print_once = true; \ 51 ata_print_version(dev, version); \ 52 } \ 53 }) 54 55 /* defines only for the constants which don't work well as enums */ 56 #define ATA_TAG_POISON 0xfafbfcfdU 57 58 enum { 59 /* various global constants */ 60 LIBATA_MAX_PRD = ATA_MAX_PRD / 2, 61 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */ 62 ATA_DEF_QUEUE = 1, 63 ATA_MAX_QUEUE = 32, 64 ATA_TAG_INTERNAL = ATA_MAX_QUEUE, 65 ATA_SHORT_PAUSE = 16, 66 67 ATAPI_MAX_DRAIN = 16 << 10, 68 69 ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1, 70 71 ATA_SHT_EMULATED = 1, 72 ATA_SHT_THIS_ID = -1, 73 74 /* struct ata_taskfile flags */ 75 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */ 76 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */ 77 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */ 78 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */ 79 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */ 80 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */ 81 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */ 82 83 /* struct ata_device stuff */ 84 ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */ 85 ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */ 86 ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */ 87 ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */ 88 ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */ 89 ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ 90 ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ 91 ATA_DFLAG_AN = (1 << 7), /* AN configured */ 92 ATA_DFLAG_TRUSTED = (1 << 8), /* device supports trusted send/recv */ 93 ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */ 94 ATA_DFLAG_CFG_MASK = (1 << 12) - 1, 95 96 ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */ 97 ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */ 98 ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */ 99 ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */ 100 ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */ 101 ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */ 102 ATA_DFLAG_NCQ_SEND_RECV = (1 << 19), /* device supports NCQ SEND and RECV */ 103 ATA_DFLAG_NCQ_PRIO = (1 << 20), /* device supports NCQ priority */ 104 ATA_DFLAG_NCQ_PRIO_ENABLE = (1 << 21), /* Priority cmds sent to dev */ 105 ATA_DFLAG_INIT_MASK = (1 << 24) - 1, 106 107 ATA_DFLAG_DETACH = (1 << 24), 108 ATA_DFLAG_DETACHED = (1 << 25), 109 110 ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */ 111 ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */ 112 ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */ 113 ATA_DFLAG_D_SENSE = (1 << 29), /* Descriptor sense requested */ 114 ATA_DFLAG_ZAC = (1 << 30), /* ZAC device */ 115 116 ATA_DFLAG_FEATURES_MASK = ATA_DFLAG_TRUSTED | ATA_DFLAG_DA | \ 117 ATA_DFLAG_DEVSLP | ATA_DFLAG_NCQ_SEND_RECV | \ 118 ATA_DFLAG_NCQ_PRIO, 119 120 ATA_DEV_UNKNOWN = 0, /* unknown device */ 121 ATA_DEV_ATA = 1, /* ATA device */ 122 ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ 123 ATA_DEV_ATAPI = 3, /* ATAPI device */ 124 ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ 125 ATA_DEV_PMP = 5, /* SATA port multiplier */ 126 ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ 127 ATA_DEV_SEMB = 7, /* SEMB */ 128 ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ 129 ATA_DEV_ZAC = 9, /* ZAC device */ 130 ATA_DEV_ZAC_UNSUP = 10, /* ZAC device (unsupported) */ 131 ATA_DEV_NONE = 11, /* no device */ 132 133 /* struct ata_link flags */ 134 /* NOTE: struct ata_force_param currently stores lflags in u16 */ 135 ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */ 136 ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ 137 ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ 138 ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ 139 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, 140 ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ 141 ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ 142 ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */ 143 ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */ 144 ATA_LFLAG_RST_ONCE = (1 << 9), /* limit recovery to one reset */ 145 ATA_LFLAG_CHANGED = (1 << 10), /* LPM state changed on this link */ 146 ATA_LFLAG_NO_DEBOUNCE_DELAY = (1 << 11), /* no debounce delay on link resume */ 147 148 /* struct ata_port flags */ 149 ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ 150 /* (doesn't imply presence) */ 151 ATA_FLAG_SATA = (1 << 1), 152 ATA_FLAG_NO_LPM = (1 << 2), /* host not happy with LPM */ 153 ATA_FLAG_NO_LOG_PAGE = (1 << 5), /* do not issue log page read */ 154 ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ 155 ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ 156 ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ 157 ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD 158 * doesn't handle PIO interrupts */ 159 ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ 160 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */ 161 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */ 162 ATA_FLAG_DEBUGMSG = (1 << 13), 163 ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */ 164 ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ 165 ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ 166 ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ 167 ATA_FLAG_AN = (1 << 18), /* controller supports AN */ 168 ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ 169 ATA_FLAG_FPDMA_AUX = (1 << 20), /* controller supports H2DFIS aux field */ 170 ATA_FLAG_EM = (1 << 21), /* driver supports enclosure 171 * management */ 172 ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity 173 * led */ 174 ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */ 175 ATA_FLAG_SAS_HOST = (1 << 24), /* SAS host */ 176 177 /* bits 24:31 of ap->flags are reserved for LLD specific flags */ 178 179 180 /* struct ata_port pflags */ 181 ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ 182 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ 183 ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ 184 ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ 185 ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ 186 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ 187 ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ 188 ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ 189 ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */ 190 ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */ 191 192 ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ 193 ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ 194 ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */ 195 196 ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */ 197 ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */ 198 ATA_PFLAG_EXTERNAL = (1 << 22), /* eSATA/external port */ 199 200 /* struct ata_queued_cmd flags */ 201 ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ 202 ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */ 203 ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ 204 ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ 205 ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ 206 ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */ 207 ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */ 208 209 ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */ 210 ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ 211 ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ 212 213 /* host set flags */ 214 ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ 215 ATA_HOST_STARTED = (1 << 1), /* Host started */ 216 ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */ 217 ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */ 218 219 /* bits 24:31 of host->flags are reserved for LLD specific flags */ 220 221 /* various lengths of time */ 222 ATA_TMOUT_BOOT = 30000, /* heuristic */ 223 ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */ 224 ATA_TMOUT_INTERNAL_QUICK = 5000, 225 ATA_TMOUT_MAX_PARK = 30000, 226 227 /* 228 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s 229 * is too much without parallel probing. Use 2s if parallel 230 * probing is available, 800ms otherwise. 231 */ 232 ATA_TMOUT_FF_WAIT_LONG = 2000, 233 ATA_TMOUT_FF_WAIT = 800, 234 235 /* Spec mandates to wait for ">= 2ms" before checking status 236 * after reset. We wait 150ms, because that was the magic 237 * delay used for ATAPI devices in Hale Landis's ATADRVR, for 238 * the period of time between when the ATA command register is 239 * written, and then status is checked. Because waiting for 240 * "a while" before checking status is fine, post SRST, we 241 * perform this magic delay here as well. 242 * 243 * Old drivers/ide uses the 2mS rule and then waits for ready. 244 */ 245 ATA_WAIT_AFTER_RESET = 150, 246 247 /* If PMP is supported, we have to do follow-up SRST. As some 248 * PMPs don't send D2H Reg FIS after hardreset, LLDs are 249 * advised to wait only for the following duration before 250 * doing SRST. 251 */ 252 ATA_TMOUT_PMP_SRST_WAIT = 5000, 253 254 /* When the LPM policy is set to ATA_LPM_MAX_POWER, there might 255 * be a spurious PHY event, so ignore the first PHY event that 256 * occurs within 10s after the policy change. 257 */ 258 ATA_TMOUT_SPURIOUS_PHY = 10000, 259 260 /* ATA bus states */ 261 BUS_UNKNOWN = 0, 262 BUS_DMA = 1, 263 BUS_IDLE = 2, 264 BUS_NOINTR = 3, 265 BUS_NODATA = 4, 266 BUS_TIMER = 5, 267 BUS_PIO = 6, 268 BUS_EDD = 7, 269 BUS_IDENTIFY = 8, 270 BUS_PACKET = 9, 271 272 /* SATA port states */ 273 PORT_UNKNOWN = 0, 274 PORT_ENABLED = 1, 275 PORT_DISABLED = 2, 276 277 /* encoding various smaller bitmaps into a single 278 * unsigned long bitmap 279 */ 280 ATA_NR_PIO_MODES = 7, 281 ATA_NR_MWDMA_MODES = 5, 282 ATA_NR_UDMA_MODES = 8, 283 284 ATA_SHIFT_PIO = 0, 285 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES, 286 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES, 287 ATA_SHIFT_PRIO = 6, 288 289 ATA_PRIO_HIGH = 2, 290 /* size of buffer to pad xfers ending on unaligned boundaries */ 291 ATA_DMA_PAD_SZ = 4, 292 293 /* ering size */ 294 ATA_ERING_SIZE = 32, 295 296 /* return values for ->qc_defer */ 297 ATA_DEFER_LINK = 1, 298 ATA_DEFER_PORT = 2, 299 300 /* desc_len for ata_eh_info and context */ 301 ATA_EH_DESC_LEN = 80, 302 303 /* reset / recovery action types */ 304 ATA_EH_REVALIDATE = (1 << 0), 305 ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */ 306 ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */ 307 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, 308 ATA_EH_ENABLE_LINK = (1 << 3), 309 ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */ 310 311 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK, 312 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET | 313 ATA_EH_ENABLE_LINK, 314 315 /* ata_eh_info->flags */ 316 ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ 317 ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ 318 ATA_EHI_QUIET = (1 << 3), /* be quiet */ 319 ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */ 320 321 ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ 322 ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ 323 ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ 324 ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ 325 ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */ 326 327 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, 328 329 /* mask of flags to transfer *to* the slave link */ 330 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, 331 332 /* max tries if error condition is still set after ->error_handler */ 333 ATA_EH_MAX_TRIES = 5, 334 335 /* sometimes resuming a link requires several retries */ 336 ATA_LINK_RESUME_TRIES = 5, 337 338 /* how hard are we gonna try to probe/recover devices */ 339 ATA_PROBE_MAX_TRIES = 3, 340 ATA_EH_DEV_TRIES = 3, 341 ATA_EH_PMP_TRIES = 5, 342 ATA_EH_PMP_LINK_TRIES = 3, 343 344 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */ 345 346 /* This should match the actual table size of 347 * ata_eh_cmd_timeout_table in libata-eh.c. 348 */ 349 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 7, 350 351 /* Horkage types. May be set by libata or controller on drives 352 (some horkage may be drive/controller pair dependent */ 353 354 ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ 355 ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ 356 ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ 357 ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ 358 ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ 359 ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */ 360 ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ 361 ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */ 362 ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */ 363 ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */ 364 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands 365 not multiple of 16 bytes */ 366 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */ 367 ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */ 368 ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */ 369 ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */ 370 ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */ 371 ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17), /* Set max sects to 65535 */ 372 ATA_HORKAGE_ATAPI_DMADIR = (1 << 18), /* device requires dmadir */ 373 ATA_HORKAGE_NO_NCQ_TRIM = (1 << 19), /* don't use queued TRIM */ 374 ATA_HORKAGE_NOLPM = (1 << 20), /* don't use LPM */ 375 ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21), /* some WDs have broken LPM */ 376 ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),/* guarantees zero after trim */ 377 ATA_HORKAGE_NO_DMA_LOG = (1 << 23), /* don't use DMA for log read */ 378 ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */ 379 ATA_HORKAGE_MAX_SEC_1024 = (1 << 25), /* Limit max sects to 1024 */ 380 ATA_HORKAGE_MAX_TRIM_128M = (1 << 26), /* Limit max trim size to 128M */ 381 ATA_HORKAGE_NO_NCQ_ON_ATI = (1 << 27), /* Disable NCQ on ATI chipset */ 382 ATA_HORKAGE_NO_ID_DEV_LOG = (1 << 28), /* Identify device log missing */ 383 ATA_HORKAGE_NO_LOG_DIR = (1 << 29), /* Do not read log directory */ 384 385 /* DMA mask for user DMA control: User visible values; DO NOT 386 renumber */ 387 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ 388 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ 389 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ 390 391 /* ATAPI command types */ 392 ATAPI_READ = 0, /* READs */ 393 ATAPI_WRITE = 1, /* WRITEs */ 394 ATAPI_READ_CD = 2, /* READ CD [MSF] */ 395 ATAPI_PASS_THRU = 3, /* SAT pass-thru */ 396 ATAPI_MISC = 4, /* the rest */ 397 398 /* Timing constants */ 399 ATA_TIMING_SETUP = (1 << 0), 400 ATA_TIMING_ACT8B = (1 << 1), 401 ATA_TIMING_REC8B = (1 << 2), 402 ATA_TIMING_CYC8B = (1 << 3), 403 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | 404 ATA_TIMING_CYC8B, 405 ATA_TIMING_ACTIVE = (1 << 4), 406 ATA_TIMING_RECOVER = (1 << 5), 407 ATA_TIMING_DMACK_HOLD = (1 << 6), 408 ATA_TIMING_CYCLE = (1 << 7), 409 ATA_TIMING_UDMA = (1 << 8), 410 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | 411 ATA_TIMING_REC8B | ATA_TIMING_CYC8B | 412 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | 413 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE | 414 ATA_TIMING_UDMA, 415 416 /* ACPI constants */ 417 ATA_ACPI_FILTER_SETXFER = 1 << 0, 418 ATA_ACPI_FILTER_LOCK = 1 << 1, 419 ATA_ACPI_FILTER_DIPM = 1 << 2, 420 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */ 421 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */ 422 423 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER | 424 ATA_ACPI_FILTER_LOCK | 425 ATA_ACPI_FILTER_DIPM, 426 }; 427 428 enum ata_xfer_mask { 429 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1) 430 << ATA_SHIFT_PIO, 431 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1) 432 << ATA_SHIFT_MWDMA, 433 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1) 434 << ATA_SHIFT_UDMA, 435 }; 436 437 enum hsm_task_states { 438 HSM_ST_IDLE, /* no command on going */ 439 HSM_ST_FIRST, /* (waiting the device to) 440 write CDB or first data block */ 441 HSM_ST, /* (waiting the device to) transfer data */ 442 HSM_ST_LAST, /* (waiting the device to) complete command */ 443 HSM_ST_ERR, /* error */ 444 }; 445 446 enum ata_completion_errors { 447 AC_ERR_OK = 0, /* no error */ 448 AC_ERR_DEV = (1 << 0), /* device reported error */ 449 AC_ERR_HSM = (1 << 1), /* host state machine violation */ 450 AC_ERR_TIMEOUT = (1 << 2), /* timeout */ 451 AC_ERR_MEDIA = (1 << 3), /* media error */ 452 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ 453 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ 454 AC_ERR_SYSTEM = (1 << 6), /* system error */ 455 AC_ERR_INVALID = (1 << 7), /* invalid argument */ 456 AC_ERR_OTHER = (1 << 8), /* unknown */ 457 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ 458 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ 459 }; 460 461 /* 462 * Link power management policy: If you alter this, you also need to 463 * alter libata-scsi.c (for the ascii descriptions) 464 */ 465 enum ata_lpm_policy { 466 ATA_LPM_UNKNOWN, 467 ATA_LPM_MAX_POWER, 468 ATA_LPM_MED_POWER, 469 ATA_LPM_MED_POWER_WITH_DIPM, /* Med power + DIPM as win IRST does */ 470 ATA_LPM_MIN_POWER_WITH_PARTIAL, /* Min Power + partial and slumber */ 471 ATA_LPM_MIN_POWER, /* Min power + no partial (slumber only) */ 472 }; 473 474 enum ata_lpm_hints { 475 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */ 476 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */ 477 ATA_LPM_WAKE_ONLY = (1 << 2), /* only wake up link */ 478 }; 479 480 /* forward declarations */ 481 struct scsi_device; 482 struct ata_port_operations; 483 struct ata_port; 484 struct ata_link; 485 struct ata_queued_cmd; 486 487 /* typedefs */ 488 typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); 489 typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); 490 typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, 491 unsigned long deadline); 492 typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); 493 494 extern struct device_attribute dev_attr_unload_heads; 495 #ifdef CONFIG_SATA_HOST 496 extern struct device_attribute dev_attr_link_power_management_policy; 497 extern struct device_attribute dev_attr_ncq_prio_supported; 498 extern struct device_attribute dev_attr_ncq_prio_enable; 499 extern struct device_attribute dev_attr_em_message_type; 500 extern struct device_attribute dev_attr_em_message; 501 extern struct device_attribute dev_attr_sw_activity; 502 #endif 503 504 enum sw_activity { 505 OFF, 506 BLINK_ON, 507 BLINK_OFF, 508 }; 509 510 struct ata_taskfile { 511 unsigned long flags; /* ATA_TFLAG_xxx */ 512 u8 protocol; /* ATA_PROT_xxx */ 513 514 u8 ctl; /* control reg */ 515 516 u8 hob_feature; /* additional data */ 517 u8 hob_nsect; /* to support LBA48 */ 518 u8 hob_lbal; 519 u8 hob_lbam; 520 u8 hob_lbah; 521 522 union { 523 u8 error; 524 u8 feature; 525 }; 526 u8 nsect; 527 u8 lbal; 528 u8 lbam; 529 u8 lbah; 530 531 u8 device; 532 533 union { 534 u8 status; 535 u8 command; 536 }; 537 538 u32 auxiliary; /* auxiliary field */ 539 /* from SATA 3.1 and */ 540 /* ATA-8 ACS-3 */ 541 }; 542 543 #ifdef CONFIG_ATA_SFF 544 struct ata_ioports { 545 void __iomem *cmd_addr; 546 void __iomem *data_addr; 547 void __iomem *error_addr; 548 void __iomem *feature_addr; 549 void __iomem *nsect_addr; 550 void __iomem *lbal_addr; 551 void __iomem *lbam_addr; 552 void __iomem *lbah_addr; 553 void __iomem *device_addr; 554 void __iomem *status_addr; 555 void __iomem *command_addr; 556 void __iomem *altstatus_addr; 557 void __iomem *ctl_addr; 558 #ifdef CONFIG_ATA_BMDMA 559 void __iomem *bmdma_addr; 560 #endif /* CONFIG_ATA_BMDMA */ 561 void __iomem *scr_addr; 562 }; 563 #endif /* CONFIG_ATA_SFF */ 564 565 struct ata_host { 566 spinlock_t lock; 567 struct device *dev; 568 void __iomem * const *iomap; 569 unsigned int n_ports; 570 unsigned int n_tags; /* nr of NCQ tags */ 571 void *private_data; 572 struct ata_port_operations *ops; 573 unsigned long flags; 574 struct kref kref; 575 576 struct mutex eh_mutex; 577 struct task_struct *eh_owner; 578 579 struct ata_port *simplex_claimed; /* channel owning the DMA */ 580 struct ata_port *ports[]; 581 }; 582 583 struct ata_queued_cmd { 584 struct ata_port *ap; 585 struct ata_device *dev; 586 587 struct scsi_cmnd *scsicmd; 588 void (*scsidone)(struct scsi_cmnd *); 589 590 struct ata_taskfile tf; 591 u8 cdb[ATAPI_CDB_LEN]; 592 593 unsigned long flags; /* ATA_QCFLAG_xxx */ 594 unsigned int tag; /* libata core tag */ 595 unsigned int hw_tag; /* driver tag */ 596 unsigned int n_elem; 597 unsigned int orig_n_elem; 598 599 int dma_dir; 600 601 unsigned int sect_size; 602 603 unsigned int nbytes; 604 unsigned int extrabytes; 605 unsigned int curbytes; 606 607 struct scatterlist sgent; 608 609 struct scatterlist *sg; 610 611 struct scatterlist *cursg; 612 unsigned int cursg_ofs; 613 614 unsigned int err_mask; 615 struct ata_taskfile result_tf; 616 ata_qc_cb_t complete_fn; 617 618 void *private_data; 619 void *lldd_task; 620 }; 621 622 struct ata_port_stats { 623 unsigned long unhandled_irq; 624 unsigned long idle_irq; 625 unsigned long rw_reqbuf; 626 }; 627 628 struct ata_ering_entry { 629 unsigned int eflags; 630 unsigned int err_mask; 631 u64 timestamp; 632 }; 633 634 struct ata_ering { 635 int cursor; 636 struct ata_ering_entry ring[ATA_ERING_SIZE]; 637 }; 638 639 struct ata_cpr { 640 u8 num; 641 u8 num_storage_elements; 642 u64 start_lba; 643 u64 num_lbas; 644 }; 645 646 struct ata_cpr_log { 647 u8 nr_cpr; 648 struct ata_cpr cpr[]; 649 }; 650 651 struct ata_device { 652 struct ata_link *link; 653 unsigned int devno; /* 0 or 1 */ 654 unsigned int horkage; /* List of broken features */ 655 unsigned long flags; /* ATA_DFLAG_xxx */ 656 struct scsi_device *sdev; /* attached SCSI device */ 657 void *private_data; 658 #ifdef CONFIG_ATA_ACPI 659 union acpi_object *gtf_cache; 660 unsigned int gtf_filter; 661 #endif 662 #ifdef CONFIG_SATA_ZPODD 663 void *zpodd; 664 #endif 665 struct device tdev; 666 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */ 667 u64 n_sectors; /* size of device, if ATA */ 668 u64 n_native_sectors; /* native size, if ATA */ 669 unsigned int class; /* ATA_DEV_xxx */ 670 unsigned long unpark_deadline; 671 672 u8 pio_mode; 673 u8 dma_mode; 674 u8 xfer_mode; 675 unsigned int xfer_shift; /* ATA_SHIFT_xxx */ 676 677 unsigned int multi_count; /* sectors count for 678 READ/WRITE MULTIPLE */ 679 unsigned int max_sectors; /* per-device max sectors */ 680 unsigned int cdb_len; 681 682 /* per-dev xfer mask */ 683 unsigned long pio_mask; 684 unsigned long mwdma_mask; 685 unsigned long udma_mask; 686 687 /* for CHS addressing */ 688 u16 cylinders; /* Number of cylinders */ 689 u16 heads; /* Number of heads */ 690 u16 sectors; /* Number of sectors per track */ 691 692 union { 693 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ 694 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ 695 } ____cacheline_aligned; 696 697 /* DEVSLP Timing Variables from Identify Device Data Log */ 698 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE]; 699 700 /* NCQ send and receive log subcommand support */ 701 u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE]; 702 u8 ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_SIZE]; 703 704 /* ZAC zone configuration */ 705 u32 zac_zoned_cap; 706 u32 zac_zones_optimal_open; 707 u32 zac_zones_optimal_nonseq; 708 u32 zac_zones_max_open; 709 710 /* Concurrent positioning ranges */ 711 struct ata_cpr_log *cpr_log; 712 713 /* error history */ 714 int spdn_cnt; 715 /* ering is CLEAR_END, read comment above CLEAR_END */ 716 struct ata_ering ering; 717 }; 718 719 /* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are 720 * cleared to zero on ata_dev_init(). 721 */ 722 #define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors) 723 #define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering) 724 725 struct ata_eh_info { 726 struct ata_device *dev; /* offending device */ 727 u32 serror; /* SError from LLDD */ 728 unsigned int err_mask; /* port-wide err_mask */ 729 unsigned int action; /* ATA_EH_* action mask */ 730 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ 731 unsigned int flags; /* ATA_EHI_* flags */ 732 733 unsigned int probe_mask; 734 735 char desc[ATA_EH_DESC_LEN]; 736 int desc_len; 737 }; 738 739 struct ata_eh_context { 740 struct ata_eh_info i; 741 int tries[ATA_MAX_DEVICES]; 742 int cmd_timeout_idx[ATA_MAX_DEVICES] 743 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE]; 744 unsigned int classes[ATA_MAX_DEVICES]; 745 unsigned int did_probe_mask; 746 unsigned int unloaded_mask; 747 unsigned int saved_ncq_enabled; 748 u8 saved_xfer_mode[ATA_MAX_DEVICES]; 749 /* timestamp for the last reset attempt or success */ 750 unsigned long last_reset; 751 }; 752 753 struct ata_acpi_drive 754 { 755 u32 pio; 756 u32 dma; 757 } __packed; 758 759 struct ata_acpi_gtm { 760 struct ata_acpi_drive drive[2]; 761 u32 flags; 762 } __packed; 763 764 struct ata_link { 765 struct ata_port *ap; 766 int pmp; /* port multiplier port # */ 767 768 struct device tdev; 769 unsigned int active_tag; /* active tag on this link */ 770 u32 sactive; /* active NCQ commands */ 771 772 unsigned int flags; /* ATA_LFLAG_xxx */ 773 774 u32 saved_scontrol; /* SControl on probe */ 775 unsigned int hw_sata_spd_limit; 776 unsigned int sata_spd_limit; 777 unsigned int sata_spd; /* current SATA PHY speed */ 778 enum ata_lpm_policy lpm_policy; 779 780 /* record runtime error info, protected by host_set lock */ 781 struct ata_eh_info eh_info; 782 /* EH context */ 783 struct ata_eh_context eh_context; 784 785 struct ata_device device[ATA_MAX_DEVICES]; 786 787 unsigned long last_lpm_change; /* when last LPM change happened */ 788 }; 789 #define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag) 790 #define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0]) 791 792 struct ata_port { 793 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ 794 struct ata_port_operations *ops; 795 spinlock_t *lock; 796 /* Flags owned by the EH context. Only EH should touch these once the 797 port is active */ 798 unsigned long flags; /* ATA_FLAG_xxx */ 799 /* Flags that change dynamically, protected by ap->lock */ 800 unsigned int pflags; /* ATA_PFLAG_xxx */ 801 unsigned int print_id; /* user visible unique port ID */ 802 unsigned int local_port_no; /* host local port num */ 803 unsigned int port_no; /* 0 based port no. inside the host */ 804 805 #ifdef CONFIG_ATA_SFF 806 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ 807 u8 ctl; /* cache of ATA control register */ 808 u8 last_ctl; /* Cache last written value */ 809 struct ata_link* sff_pio_task_link; /* link currently used */ 810 struct delayed_work sff_pio_task; 811 #ifdef CONFIG_ATA_BMDMA 812 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */ 813 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */ 814 #endif /* CONFIG_ATA_BMDMA */ 815 #endif /* CONFIG_ATA_SFF */ 816 817 unsigned int pio_mask; 818 unsigned int mwdma_mask; 819 unsigned int udma_mask; 820 unsigned int cbl; /* cable type; ATA_CBL_xxx */ 821 822 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE + 1]; 823 unsigned long sas_tag_allocated; /* for sas tag allocation only */ 824 u64 qc_active; 825 int nr_active_links; /* #links with active qcs */ 826 unsigned int sas_last_tag; /* track next tag hw expects */ 827 828 struct ata_link link; /* host default link */ 829 struct ata_link *slave_link; /* see ata_slave_link_init() */ 830 831 int nr_pmp_links; /* nr of available PMP links */ 832 struct ata_link *pmp_link; /* array of PMP links */ 833 struct ata_link *excl_link; /* for PMP qc exclusion */ 834 835 struct ata_port_stats stats; 836 struct ata_host *host; 837 struct device *dev; 838 struct device tdev; 839 840 struct mutex scsi_scan_mutex; 841 struct delayed_work hotplug_task; 842 struct work_struct scsi_rescan_task; 843 844 unsigned int hsm_task_state; 845 846 struct list_head eh_done_q; 847 wait_queue_head_t eh_wait_q; 848 int eh_tries; 849 struct completion park_req_pending; 850 851 pm_message_t pm_mesg; 852 enum ata_lpm_policy target_lpm_policy; 853 854 struct timer_list fastdrain_timer; 855 unsigned long fastdrain_cnt; 856 857 async_cookie_t cookie; 858 859 int em_message_type; 860 void *private_data; 861 862 #ifdef CONFIG_ATA_ACPI 863 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */ 864 #endif 865 /* owned by EH */ 866 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned; 867 }; 868 869 /* The following initializer overrides a method to NULL whether one of 870 * its parent has the method defined or not. This is equivalent to 871 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant 872 * expression and thus can't be used as an initializer. 873 */ 874 #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT) 875 876 struct ata_port_operations { 877 /* 878 * Command execution 879 */ 880 int (*qc_defer)(struct ata_queued_cmd *qc); 881 int (*check_atapi_dma)(struct ata_queued_cmd *qc); 882 enum ata_completion_errors (*qc_prep)(struct ata_queued_cmd *qc); 883 unsigned int (*qc_issue)(struct ata_queued_cmd *qc); 884 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc); 885 886 /* 887 * Configuration and exception handling 888 */ 889 int (*cable_detect)(struct ata_port *ap); 890 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask); 891 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev); 892 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev); 893 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev); 894 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, 895 __le16 *id); 896 897 void (*dev_config)(struct ata_device *dev); 898 899 void (*freeze)(struct ata_port *ap); 900 void (*thaw)(struct ata_port *ap); 901 ata_prereset_fn_t prereset; 902 ata_reset_fn_t softreset; 903 ata_reset_fn_t hardreset; 904 ata_postreset_fn_t postreset; 905 ata_prereset_fn_t pmp_prereset; 906 ata_reset_fn_t pmp_softreset; 907 ata_reset_fn_t pmp_hardreset; 908 ata_postreset_fn_t pmp_postreset; 909 void (*error_handler)(struct ata_port *ap); 910 void (*lost_interrupt)(struct ata_port *ap); 911 void (*post_internal_cmd)(struct ata_queued_cmd *qc); 912 void (*sched_eh)(struct ata_port *ap); 913 void (*end_eh)(struct ata_port *ap); 914 915 /* 916 * Optional features 917 */ 918 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val); 919 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val); 920 void (*pmp_attach)(struct ata_port *ap); 921 void (*pmp_detach)(struct ata_port *ap); 922 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy, 923 unsigned hints); 924 925 /* 926 * Start, stop, suspend and resume 927 */ 928 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg); 929 int (*port_resume)(struct ata_port *ap); 930 int (*port_start)(struct ata_port *ap); 931 void (*port_stop)(struct ata_port *ap); 932 void (*host_stop)(struct ata_host *host); 933 934 #ifdef CONFIG_ATA_SFF 935 /* 936 * SFF / taskfile oriented ops 937 */ 938 void (*sff_dev_select)(struct ata_port *ap, unsigned int device); 939 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl); 940 u8 (*sff_check_status)(struct ata_port *ap); 941 u8 (*sff_check_altstatus)(struct ata_port *ap); 942 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf); 943 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf); 944 void (*sff_exec_command)(struct ata_port *ap, 945 const struct ata_taskfile *tf); 946 unsigned int (*sff_data_xfer)(struct ata_queued_cmd *qc, 947 unsigned char *buf, unsigned int buflen, int rw); 948 void (*sff_irq_on)(struct ata_port *); 949 bool (*sff_irq_check)(struct ata_port *); 950 void (*sff_irq_clear)(struct ata_port *); 951 void (*sff_drain_fifo)(struct ata_queued_cmd *qc); 952 953 #ifdef CONFIG_ATA_BMDMA 954 void (*bmdma_setup)(struct ata_queued_cmd *qc); 955 void (*bmdma_start)(struct ata_queued_cmd *qc); 956 void (*bmdma_stop)(struct ata_queued_cmd *qc); 957 u8 (*bmdma_status)(struct ata_port *ap); 958 #endif /* CONFIG_ATA_BMDMA */ 959 #endif /* CONFIG_ATA_SFF */ 960 961 ssize_t (*em_show)(struct ata_port *ap, char *buf); 962 ssize_t (*em_store)(struct ata_port *ap, const char *message, 963 size_t size); 964 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf); 965 ssize_t (*sw_activity_store)(struct ata_device *dev, 966 enum sw_activity val); 967 ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state, 968 ssize_t size); 969 970 /* 971 * Obsolete 972 */ 973 void (*phy_reset)(struct ata_port *ap); 974 void (*eng_timeout)(struct ata_port *ap); 975 976 /* 977 * ->inherits must be the last field and all the preceding 978 * fields must be pointers. 979 */ 980 const struct ata_port_operations *inherits; 981 }; 982 983 struct ata_port_info { 984 unsigned long flags; 985 unsigned long link_flags; 986 unsigned long pio_mask; 987 unsigned long mwdma_mask; 988 unsigned long udma_mask; 989 struct ata_port_operations *port_ops; 990 void *private_data; 991 }; 992 993 struct ata_timing { 994 unsigned short mode; /* ATA mode */ 995 unsigned short setup; /* t1 */ 996 unsigned short act8b; /* t2 for 8-bit I/O */ 997 unsigned short rec8b; /* t2i for 8-bit I/O */ 998 unsigned short cyc8b; /* t0 for 8-bit I/O */ 999 unsigned short active; /* t2 or tD */ 1000 unsigned short recover; /* t2i or tK */ 1001 unsigned short dmack_hold; /* tj */ 1002 unsigned short cycle; /* t0 */ 1003 unsigned short udma; /* t2CYCTYP/2 */ 1004 }; 1005 1006 /* 1007 * Core layer - drivers/ata/libata-core.c 1008 */ 1009 extern struct ata_port_operations ata_dummy_port_ops; 1010 extern const struct ata_port_info ata_dummy_port_info; 1011 1012 static inline bool ata_is_atapi(u8 prot) 1013 { 1014 return prot & ATA_PROT_FLAG_ATAPI; 1015 } 1016 1017 static inline bool ata_is_pio(u8 prot) 1018 { 1019 return prot & ATA_PROT_FLAG_PIO; 1020 } 1021 1022 static inline bool ata_is_dma(u8 prot) 1023 { 1024 return prot & ATA_PROT_FLAG_DMA; 1025 } 1026 1027 static inline bool ata_is_ncq(u8 prot) 1028 { 1029 return prot & ATA_PROT_FLAG_NCQ; 1030 } 1031 1032 static inline bool ata_is_data(u8 prot) 1033 { 1034 return prot & (ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA); 1035 } 1036 1037 static inline int is_multi_taskfile(struct ata_taskfile *tf) 1038 { 1039 return (tf->command == ATA_CMD_READ_MULTI) || 1040 (tf->command == ATA_CMD_WRITE_MULTI) || 1041 (tf->command == ATA_CMD_READ_MULTI_EXT) || 1042 (tf->command == ATA_CMD_WRITE_MULTI_EXT) || 1043 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); 1044 } 1045 1046 static inline int ata_port_is_dummy(struct ata_port *ap) 1047 { 1048 return ap->ops == &ata_dummy_port_ops; 1049 } 1050 1051 extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); 1052 extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, 1053 int (*check_ready)(struct ata_link *link)); 1054 extern int sata_std_hardreset(struct ata_link *link, unsigned int *class, 1055 unsigned long deadline); 1056 extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); 1057 1058 extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports); 1059 extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, 1060 const struct ata_port_info * const * ppi, int n_ports); 1061 extern void ata_host_get(struct ata_host *host); 1062 extern void ata_host_put(struct ata_host *host); 1063 extern int ata_host_start(struct ata_host *host); 1064 extern int ata_host_register(struct ata_host *host, 1065 struct scsi_host_template *sht); 1066 extern int ata_host_activate(struct ata_host *host, int irq, 1067 irq_handler_t irq_handler, unsigned long irq_flags, 1068 struct scsi_host_template *sht); 1069 extern void ata_host_detach(struct ata_host *host); 1070 extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *); 1071 extern int ata_scsi_detect(struct scsi_host_template *sht); 1072 extern int ata_scsi_ioctl(struct scsi_device *dev, unsigned int cmd, 1073 void __user *arg); 1074 #ifdef CONFIG_COMPAT 1075 #define ATA_SCSI_COMPAT_IOCTL .compat_ioctl = ata_scsi_ioctl, 1076 #else 1077 #define ATA_SCSI_COMPAT_IOCTL /* empty */ 1078 #endif 1079 extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd); 1080 #if IS_REACHABLE(CONFIG_ATA) 1081 bool ata_scsi_dma_need_drain(struct request *rq); 1082 #else 1083 #define ata_scsi_dma_need_drain NULL 1084 #endif 1085 extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev, 1086 unsigned int cmd, void __user *arg); 1087 extern bool ata_link_online(struct ata_link *link); 1088 extern bool ata_link_offline(struct ata_link *link); 1089 #ifdef CONFIG_PM 1090 extern void ata_host_suspend(struct ata_host *host, pm_message_t mesg); 1091 extern void ata_host_resume(struct ata_host *host); 1092 extern void ata_sas_port_suspend(struct ata_port *ap); 1093 extern void ata_sas_port_resume(struct ata_port *ap); 1094 #else 1095 static inline void ata_sas_port_suspend(struct ata_port *ap) 1096 { 1097 } 1098 static inline void ata_sas_port_resume(struct ata_port *ap) 1099 { 1100 } 1101 #endif 1102 extern int ata_ratelimit(void); 1103 extern void ata_msleep(struct ata_port *ap, unsigned int msecs); 1104 extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask, 1105 u32 val, unsigned long interval, unsigned long timeout); 1106 extern int atapi_cmd_type(u8 opcode); 1107 extern unsigned long ata_pack_xfermask(unsigned long pio_mask, 1108 unsigned long mwdma_mask, unsigned long udma_mask); 1109 extern void ata_unpack_xfermask(unsigned long xfer_mask, 1110 unsigned long *pio_mask, unsigned long *mwdma_mask, 1111 unsigned long *udma_mask); 1112 extern u8 ata_xfer_mask2mode(unsigned long xfer_mask); 1113 extern unsigned long ata_xfer_mode2mask(u8 xfer_mode); 1114 extern int ata_xfer_mode2shift(unsigned long xfer_mode); 1115 extern const char *ata_mode_string(unsigned long xfer_mask); 1116 extern unsigned long ata_id_xfermask(const u16 *id); 1117 extern int ata_std_qc_defer(struct ata_queued_cmd *qc); 1118 extern enum ata_completion_errors ata_noop_qc_prep(struct ata_queued_cmd *qc); 1119 extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, 1120 unsigned int n_elem); 1121 extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); 1122 extern unsigned int ata_port_classify(struct ata_port *ap, 1123 const struct ata_taskfile *tf); 1124 extern void ata_dev_disable(struct ata_device *adev); 1125 extern void ata_id_string(const u16 *id, unsigned char *s, 1126 unsigned int ofs, unsigned int len); 1127 extern void ata_id_c_string(const u16 *id, unsigned char *s, 1128 unsigned int ofs, unsigned int len); 1129 extern unsigned int ata_do_dev_read_id(struct ata_device *dev, 1130 struct ata_taskfile *tf, __le16 *id); 1131 extern void ata_qc_complete(struct ata_queued_cmd *qc); 1132 extern u64 ata_qc_get_active(struct ata_port *ap); 1133 extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd); 1134 extern int ata_std_bios_param(struct scsi_device *sdev, 1135 struct block_device *bdev, 1136 sector_t capacity, int geom[]); 1137 extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev); 1138 extern int ata_scsi_slave_config(struct scsi_device *sdev); 1139 extern void ata_scsi_slave_destroy(struct scsi_device *sdev); 1140 extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, 1141 int queue_depth); 1142 extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, 1143 int queue_depth); 1144 extern struct ata_device *ata_dev_pair(struct ata_device *adev); 1145 extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); 1146 extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap); 1147 extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q); 1148 1149 /* 1150 * SATA specific code - drivers/ata/libata-sata.c 1151 */ 1152 #ifdef CONFIG_SATA_HOST 1153 extern const unsigned long sata_deb_timing_normal[]; 1154 extern const unsigned long sata_deb_timing_hotplug[]; 1155 extern const unsigned long sata_deb_timing_long[]; 1156 1157 static inline const unsigned long * 1158 sata_ehc_deb_timing(struct ata_eh_context *ehc) 1159 { 1160 if (ehc->i.flags & ATA_EHI_HOTPLUGGED) 1161 return sata_deb_timing_hotplug; 1162 else 1163 return sata_deb_timing_normal; 1164 } 1165 1166 extern int sata_scr_valid(struct ata_link *link); 1167 extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); 1168 extern int sata_scr_write(struct ata_link *link, int reg, u32 val); 1169 extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); 1170 extern int sata_set_spd(struct ata_link *link); 1171 extern int sata_link_hardreset(struct ata_link *link, 1172 const unsigned long *timing, unsigned long deadline, 1173 bool *online, int (*check_ready)(struct ata_link *)); 1174 extern int sata_link_resume(struct ata_link *link, const unsigned long *params, 1175 unsigned long deadline); 1176 extern void ata_eh_analyze_ncq_error(struct ata_link *link); 1177 #else 1178 static inline const unsigned long * 1179 sata_ehc_deb_timing(struct ata_eh_context *ehc) 1180 { 1181 return NULL; 1182 } 1183 static inline int sata_scr_valid(struct ata_link *link) { return 0; } 1184 static inline int sata_scr_read(struct ata_link *link, int reg, u32 *val) 1185 { 1186 return -EOPNOTSUPP; 1187 } 1188 static inline int sata_scr_write(struct ata_link *link, int reg, u32 val) 1189 { 1190 return -EOPNOTSUPP; 1191 } 1192 static inline int sata_scr_write_flush(struct ata_link *link, int reg, u32 val) 1193 { 1194 return -EOPNOTSUPP; 1195 } 1196 static inline int sata_set_spd(struct ata_link *link) { return -EOPNOTSUPP; } 1197 static inline int sata_link_hardreset(struct ata_link *link, 1198 const unsigned long *timing, 1199 unsigned long deadline, 1200 bool *online, 1201 int (*check_ready)(struct ata_link *)) 1202 { 1203 if (online) 1204 *online = false; 1205 return -EOPNOTSUPP; 1206 } 1207 static inline int sata_link_resume(struct ata_link *link, 1208 const unsigned long *params, 1209 unsigned long deadline) 1210 { 1211 return -EOPNOTSUPP; 1212 } 1213 static inline void ata_eh_analyze_ncq_error(struct ata_link *link) { } 1214 #endif 1215 extern int sata_link_debounce(struct ata_link *link, 1216 const unsigned long *params, unsigned long deadline); 1217 extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy, 1218 bool spm_wakeup); 1219 extern int ata_slave_link_init(struct ata_port *ap); 1220 extern void ata_sas_port_destroy(struct ata_port *); 1221 extern struct ata_port *ata_sas_port_alloc(struct ata_host *, 1222 struct ata_port_info *, struct Scsi_Host *); 1223 extern void ata_sas_async_probe(struct ata_port *ap); 1224 extern int ata_sas_sync_probe(struct ata_port *ap); 1225 extern int ata_sas_port_init(struct ata_port *); 1226 extern int ata_sas_port_start(struct ata_port *ap); 1227 extern int ata_sas_tport_add(struct device *parent, struct ata_port *ap); 1228 extern void ata_sas_tport_delete(struct ata_port *ap); 1229 extern void ata_sas_port_stop(struct ata_port *ap); 1230 extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); 1231 extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap); 1232 extern void ata_tf_to_fis(const struct ata_taskfile *tf, 1233 u8 pmp, int is_cmd, u8 *fis); 1234 extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); 1235 extern int ata_qc_complete_multiple(struct ata_port *ap, u64 qc_active); 1236 extern bool sata_lpm_ignore_phy_events(struct ata_link *link); 1237 extern int sata_async_notification(struct ata_port *ap); 1238 1239 extern int ata_cable_40wire(struct ata_port *ap); 1240 extern int ata_cable_80wire(struct ata_port *ap); 1241 extern int ata_cable_sata(struct ata_port *ap); 1242 extern int ata_cable_ignore(struct ata_port *ap); 1243 extern int ata_cable_unknown(struct ata_port *ap); 1244 1245 /* Timing helpers */ 1246 extern unsigned int ata_pio_need_iordy(const struct ata_device *); 1247 extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); 1248 1249 /* PCI */ 1250 #ifdef CONFIG_PCI 1251 struct pci_dev; 1252 1253 struct pci_bits { 1254 unsigned int reg; /* PCI config register to read */ 1255 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ 1256 unsigned long mask; 1257 unsigned long val; 1258 }; 1259 1260 extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); 1261 extern void ata_pci_shutdown_one(struct pci_dev *pdev); 1262 extern void ata_pci_remove_one(struct pci_dev *pdev); 1263 1264 #ifdef CONFIG_PM 1265 extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); 1266 extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); 1267 extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); 1268 extern int ata_pci_device_resume(struct pci_dev *pdev); 1269 #endif /* CONFIG_PM */ 1270 #endif /* CONFIG_PCI */ 1271 1272 struct platform_device; 1273 1274 extern int ata_platform_remove_one(struct platform_device *pdev); 1275 1276 /* 1277 * ACPI - drivers/ata/libata-acpi.c 1278 */ 1279 #ifdef CONFIG_ATA_ACPI 1280 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1281 { 1282 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) 1283 return &ap->__acpi_init_gtm; 1284 return NULL; 1285 } 1286 int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); 1287 int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); 1288 unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, 1289 const struct ata_acpi_gtm *gtm); 1290 int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm); 1291 #else 1292 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1293 { 1294 return NULL; 1295 } 1296 1297 static inline int ata_acpi_stm(const struct ata_port *ap, 1298 struct ata_acpi_gtm *stm) 1299 { 1300 return -ENOSYS; 1301 } 1302 1303 static inline int ata_acpi_gtm(const struct ata_port *ap, 1304 struct ata_acpi_gtm *stm) 1305 { 1306 return -ENOSYS; 1307 } 1308 1309 static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, 1310 const struct ata_acpi_gtm *gtm) 1311 { 1312 return 0; 1313 } 1314 1315 static inline int ata_acpi_cbl_80wire(struct ata_port *ap, 1316 const struct ata_acpi_gtm *gtm) 1317 { 1318 return 0; 1319 } 1320 #endif 1321 1322 /* 1323 * EH - drivers/ata/libata-eh.c 1324 */ 1325 extern void ata_port_schedule_eh(struct ata_port *ap); 1326 extern void ata_port_wait_eh(struct ata_port *ap); 1327 extern int ata_link_abort(struct ata_link *link); 1328 extern int ata_port_abort(struct ata_port *ap); 1329 extern int ata_port_freeze(struct ata_port *ap); 1330 1331 extern void ata_eh_freeze_port(struct ata_port *ap); 1332 extern void ata_eh_thaw_port(struct ata_port *ap); 1333 1334 extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); 1335 extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); 1336 1337 extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, 1338 ata_reset_fn_t softreset, ata_reset_fn_t hardreset, 1339 ata_postreset_fn_t postreset); 1340 extern void ata_std_error_handler(struct ata_port *ap); 1341 extern void ata_std_sched_eh(struct ata_port *ap); 1342 extern void ata_std_end_eh(struct ata_port *ap); 1343 extern int ata_link_nr_enabled(struct ata_link *link); 1344 1345 /* 1346 * Base operations to inherit from and initializers for sht 1347 * 1348 * Operations 1349 * 1350 * base : Common to all libata drivers. 1351 * sata : SATA controllers w/ native interface. 1352 * pmp : SATA controllers w/ PMP support. 1353 * sff : SFF ATA controllers w/o BMDMA support. 1354 * bmdma : SFF ATA controllers w/ BMDMA support. 1355 * 1356 * sht initializers 1357 * 1358 * BASE : Common to all libata drivers. The user must set 1359 * sg_tablesize and dma_boundary. 1360 * PIO : SFF ATA controllers w/ only PIO support. 1361 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and 1362 * dma_boundary are set to BMDMA limits. 1363 * NCQ : SATA controllers supporting NCQ. The user must set 1364 * sg_tablesize, dma_boundary and can_queue. 1365 */ 1366 extern const struct ata_port_operations ata_base_port_ops; 1367 extern const struct ata_port_operations sata_port_ops; 1368 extern const struct attribute_group *ata_common_sdev_groups[]; 1369 1370 /* 1371 * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated 1372 * by the edge drivers. Because the 'module' field of sht must be the 1373 * edge driver's module reference, otherwise the driver can be unloaded 1374 * even if the scsi_device is being accessed. 1375 */ 1376 #define __ATA_BASE_SHT(drv_name) \ 1377 .module = THIS_MODULE, \ 1378 .name = drv_name, \ 1379 .ioctl = ata_scsi_ioctl, \ 1380 ATA_SCSI_COMPAT_IOCTL \ 1381 .queuecommand = ata_scsi_queuecmd, \ 1382 .dma_need_drain = ata_scsi_dma_need_drain, \ 1383 .this_id = ATA_SHT_THIS_ID, \ 1384 .emulated = ATA_SHT_EMULATED, \ 1385 .proc_name = drv_name, \ 1386 .slave_destroy = ata_scsi_slave_destroy, \ 1387 .bios_param = ata_std_bios_param, \ 1388 .unlock_native_capacity = ata_scsi_unlock_native_capacity 1389 1390 #define ATA_SUBBASE_SHT(drv_name) \ 1391 __ATA_BASE_SHT(drv_name), \ 1392 .can_queue = ATA_DEF_QUEUE, \ 1393 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \ 1394 .slave_configure = ata_scsi_slave_config 1395 1396 #define ATA_SUBBASE_SHT_QD(drv_name, drv_qd) \ 1397 __ATA_BASE_SHT(drv_name), \ 1398 .can_queue = drv_qd, \ 1399 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \ 1400 .slave_configure = ata_scsi_slave_config 1401 1402 #define ATA_BASE_SHT(drv_name) \ 1403 ATA_SUBBASE_SHT(drv_name), \ 1404 .sdev_groups = ata_common_sdev_groups 1405 1406 #ifdef CONFIG_SATA_HOST 1407 extern const struct attribute_group *ata_ncq_sdev_groups[]; 1408 1409 #define ATA_NCQ_SHT(drv_name) \ 1410 ATA_SUBBASE_SHT(drv_name), \ 1411 .sdev_groups = ata_ncq_sdev_groups, \ 1412 .change_queue_depth = ata_scsi_change_queue_depth 1413 1414 #define ATA_NCQ_SHT_QD(drv_name, drv_qd) \ 1415 ATA_SUBBASE_SHT_QD(drv_name, drv_qd), \ 1416 .sdev_groups = ata_ncq_sdev_groups, \ 1417 .change_queue_depth = ata_scsi_change_queue_depth 1418 #endif 1419 1420 /* 1421 * PMP helpers 1422 */ 1423 #ifdef CONFIG_SATA_PMP 1424 static inline bool sata_pmp_supported(struct ata_port *ap) 1425 { 1426 return ap->flags & ATA_FLAG_PMP; 1427 } 1428 1429 static inline bool sata_pmp_attached(struct ata_port *ap) 1430 { 1431 return ap->nr_pmp_links != 0; 1432 } 1433 1434 static inline bool ata_is_host_link(const struct ata_link *link) 1435 { 1436 return link == &link->ap->link || link == link->ap->slave_link; 1437 } 1438 #else /* CONFIG_SATA_PMP */ 1439 static inline bool sata_pmp_supported(struct ata_port *ap) 1440 { 1441 return false; 1442 } 1443 1444 static inline bool sata_pmp_attached(struct ata_port *ap) 1445 { 1446 return false; 1447 } 1448 1449 static inline bool ata_is_host_link(const struct ata_link *link) 1450 { 1451 return true; 1452 } 1453 #endif /* CONFIG_SATA_PMP */ 1454 1455 static inline int sata_srst_pmp(struct ata_link *link) 1456 { 1457 if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) 1458 return SATA_PMP_CTRL_PORT; 1459 return link->pmp; 1460 } 1461 1462 #define ata_port_printk(level, ap, fmt, ...) \ 1463 pr_ ## level ("ata%u: " fmt, (ap)->print_id, ##__VA_ARGS__) 1464 1465 #define ata_port_err(ap, fmt, ...) \ 1466 ata_port_printk(err, ap, fmt, ##__VA_ARGS__) 1467 #define ata_port_warn(ap, fmt, ...) \ 1468 ata_port_printk(warn, ap, fmt, ##__VA_ARGS__) 1469 #define ata_port_notice(ap, fmt, ...) \ 1470 ata_port_printk(notice, ap, fmt, ##__VA_ARGS__) 1471 #define ata_port_info(ap, fmt, ...) \ 1472 ata_port_printk(info, ap, fmt, ##__VA_ARGS__) 1473 #define ata_port_dbg(ap, fmt, ...) \ 1474 ata_port_printk(debug, ap, fmt, ##__VA_ARGS__) 1475 1476 #define ata_link_printk(level, link, fmt, ...) \ 1477 do { \ 1478 if (sata_pmp_attached((link)->ap) || \ 1479 (link)->ap->slave_link) \ 1480 pr_ ## level ("ata%u.%02u: " fmt, \ 1481 (link)->ap->print_id, \ 1482 (link)->pmp, \ 1483 ##__VA_ARGS__); \ 1484 else \ 1485 pr_ ## level ("ata%u: " fmt, \ 1486 (link)->ap->print_id, \ 1487 ##__VA_ARGS__); \ 1488 } while (0) 1489 1490 #define ata_link_err(link, fmt, ...) \ 1491 ata_link_printk(err, link, fmt, ##__VA_ARGS__) 1492 #define ata_link_warn(link, fmt, ...) \ 1493 ata_link_printk(warn, link, fmt, ##__VA_ARGS__) 1494 #define ata_link_notice(link, fmt, ...) \ 1495 ata_link_printk(notice, link, fmt, ##__VA_ARGS__) 1496 #define ata_link_info(link, fmt, ...) \ 1497 ata_link_printk(info, link, fmt, ##__VA_ARGS__) 1498 #define ata_link_dbg(link, fmt, ...) \ 1499 ata_link_printk(debug, link, fmt, ##__VA_ARGS__) 1500 1501 #define ata_dev_printk(level, dev, fmt, ...) \ 1502 pr_ ## level("ata%u.%02u: " fmt, \ 1503 (dev)->link->ap->print_id, \ 1504 (dev)->link->pmp + (dev)->devno, \ 1505 ##__VA_ARGS__) 1506 1507 #define ata_dev_err(dev, fmt, ...) \ 1508 ata_dev_printk(err, dev, fmt, ##__VA_ARGS__) 1509 #define ata_dev_warn(dev, fmt, ...) \ 1510 ata_dev_printk(warn, dev, fmt, ##__VA_ARGS__) 1511 #define ata_dev_notice(dev, fmt, ...) \ 1512 ata_dev_printk(notice, dev, fmt, ##__VA_ARGS__) 1513 #define ata_dev_info(dev, fmt, ...) \ 1514 ata_dev_printk(info, dev, fmt, ##__VA_ARGS__) 1515 #define ata_dev_dbg(dev, fmt, ...) \ 1516 ata_dev_printk(debug, dev, fmt, ##__VA_ARGS__) 1517 1518 void ata_print_version(const struct device *dev, const char *version); 1519 1520 /* 1521 * ata_eh_info helpers 1522 */ 1523 extern __printf(2, 3) 1524 void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); 1525 extern __printf(2, 3) 1526 void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); 1527 extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); 1528 1529 static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) 1530 { 1531 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; 1532 ehi->flags |= ATA_EHI_HOTPLUGGED; 1533 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK; 1534 ehi->err_mask |= AC_ERR_ATA_BUS; 1535 } 1536 1537 /* 1538 * port description helpers 1539 */ 1540 extern __printf(2, 3) 1541 void ata_port_desc(struct ata_port *ap, const char *fmt, ...); 1542 #ifdef CONFIG_PCI 1543 extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, 1544 const char *name); 1545 #endif 1546 1547 static inline bool ata_tag_internal(unsigned int tag) 1548 { 1549 return tag == ATA_TAG_INTERNAL; 1550 } 1551 1552 static inline bool ata_tag_valid(unsigned int tag) 1553 { 1554 return tag < ATA_MAX_QUEUE || ata_tag_internal(tag); 1555 } 1556 1557 #define __ata_qc_for_each(ap, qc, tag, max_tag, fn) \ 1558 for ((tag) = 0; (tag) < (max_tag) && \ 1559 ({ qc = fn((ap), (tag)); 1; }); (tag)++) \ 1560 1561 /* 1562 * Internal use only, iterate commands ignoring error handling and 1563 * status of 'qc'. 1564 */ 1565 #define ata_qc_for_each_raw(ap, qc, tag) \ 1566 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, __ata_qc_from_tag) 1567 1568 /* 1569 * Iterate all potential commands that can be queued 1570 */ 1571 #define ata_qc_for_each(ap, qc, tag) \ 1572 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, ata_qc_from_tag) 1573 1574 /* 1575 * Like ata_qc_for_each, but with the internal tag included 1576 */ 1577 #define ata_qc_for_each_with_internal(ap, qc, tag) \ 1578 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE + 1, ata_qc_from_tag) 1579 1580 /* 1581 * device helpers 1582 */ 1583 static inline unsigned int ata_class_enabled(unsigned int class) 1584 { 1585 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || 1586 class == ATA_DEV_PMP || class == ATA_DEV_SEMB || 1587 class == ATA_DEV_ZAC; 1588 } 1589 1590 static inline unsigned int ata_class_disabled(unsigned int class) 1591 { 1592 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || 1593 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP || 1594 class == ATA_DEV_ZAC_UNSUP; 1595 } 1596 1597 static inline unsigned int ata_class_absent(unsigned int class) 1598 { 1599 return !ata_class_enabled(class) && !ata_class_disabled(class); 1600 } 1601 1602 static inline unsigned int ata_dev_enabled(const struct ata_device *dev) 1603 { 1604 return ata_class_enabled(dev->class); 1605 } 1606 1607 static inline unsigned int ata_dev_disabled(const struct ata_device *dev) 1608 { 1609 return ata_class_disabled(dev->class); 1610 } 1611 1612 static inline unsigned int ata_dev_absent(const struct ata_device *dev) 1613 { 1614 return ata_class_absent(dev->class); 1615 } 1616 1617 /* 1618 * link helpers 1619 */ 1620 static inline int ata_link_max_devices(const struct ata_link *link) 1621 { 1622 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) 1623 return 2; 1624 return 1; 1625 } 1626 1627 static inline int ata_link_active(struct ata_link *link) 1628 { 1629 return ata_tag_valid(link->active_tag) || link->sactive; 1630 } 1631 1632 /* 1633 * Iterators 1634 * 1635 * ATA_LITER_* constants are used to select link iteration mode and 1636 * ATA_DITER_* device iteration mode. 1637 * 1638 * For a custom iteration directly using ata_{link|dev}_next(), if 1639 * @link or @dev, respectively, is NULL, the first element is 1640 * returned. @dev and @link can be any valid device or link and the 1641 * next element according to the iteration mode will be returned. 1642 * After the last element, NULL is returned. 1643 */ 1644 enum ata_link_iter_mode { 1645 ATA_LITER_EDGE, /* if present, PMP links only; otherwise, 1646 * host link. no slave link */ 1647 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */ 1648 ATA_LITER_PMP_FIRST, /* PMP links followed by host link, 1649 * slave link still comes after host link */ 1650 }; 1651 1652 enum ata_dev_iter_mode { 1653 ATA_DITER_ENABLED, 1654 ATA_DITER_ENABLED_REVERSE, 1655 ATA_DITER_ALL, 1656 ATA_DITER_ALL_REVERSE, 1657 }; 1658 1659 extern struct ata_link *ata_link_next(struct ata_link *link, 1660 struct ata_port *ap, 1661 enum ata_link_iter_mode mode); 1662 1663 extern struct ata_device *ata_dev_next(struct ata_device *dev, 1664 struct ata_link *link, 1665 enum ata_dev_iter_mode mode); 1666 1667 /* 1668 * Shortcut notation for iterations 1669 * 1670 * ata_for_each_link() iterates over each link of @ap according to 1671 * @mode. @link points to the current link in the loop. @link is 1672 * NULL after loop termination. ata_for_each_dev() works the same way 1673 * except that it iterates over each device of @link. 1674 * 1675 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be 1676 * specified when using the following shorthand notations. Only the 1677 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be 1678 * specified. This not only increases brevity but also makes it 1679 * impossible to use ATA_LITER_* for device iteration or vice-versa. 1680 */ 1681 #define ata_for_each_link(link, ap, mode) \ 1682 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \ 1683 (link) = ata_link_next((link), (ap), ATA_LITER_##mode)) 1684 1685 #define ata_for_each_dev(dev, link, mode) \ 1686 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \ 1687 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode)) 1688 1689 /** 1690 * ata_ncq_enabled - Test whether NCQ is enabled 1691 * @dev: ATA device to test for 1692 * 1693 * LOCKING: 1694 * spin_lock_irqsave(host lock) 1695 * 1696 * RETURNS: 1697 * 1 if NCQ is enabled for @dev, 0 otherwise. 1698 */ 1699 static inline int ata_ncq_enabled(struct ata_device *dev) 1700 { 1701 if (!IS_ENABLED(CONFIG_SATA_HOST)) 1702 return 0; 1703 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | 1704 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; 1705 } 1706 1707 static inline bool ata_fpdma_dsm_supported(struct ata_device *dev) 1708 { 1709 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1710 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] & 1711 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM); 1712 } 1713 1714 static inline bool ata_fpdma_read_log_supported(struct ata_device *dev) 1715 { 1716 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1717 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET] & 1718 ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED); 1719 } 1720 1721 static inline bool ata_fpdma_zac_mgmt_in_supported(struct ata_device *dev) 1722 { 1723 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1724 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET] & 1725 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED); 1726 } 1727 1728 static inline bool ata_fpdma_zac_mgmt_out_supported(struct ata_device *dev) 1729 { 1730 return (dev->ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET] & 1731 ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT); 1732 } 1733 1734 static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) 1735 { 1736 qc->tf.ctl |= ATA_NIEN; 1737 } 1738 1739 static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, 1740 unsigned int tag) 1741 { 1742 if (ata_tag_valid(tag)) 1743 return &ap->qcmd[tag]; 1744 return NULL; 1745 } 1746 1747 static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, 1748 unsigned int tag) 1749 { 1750 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); 1751 1752 if (unlikely(!qc) || !ap->ops->error_handler) 1753 return qc; 1754 1755 if ((qc->flags & (ATA_QCFLAG_ACTIVE | 1756 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) 1757 return qc; 1758 1759 return NULL; 1760 } 1761 1762 static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc) 1763 { 1764 return qc->nbytes - min(qc->extrabytes, qc->nbytes); 1765 } 1766 1767 static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) 1768 { 1769 memset(tf, 0, sizeof(*tf)); 1770 1771 #ifdef CONFIG_ATA_SFF 1772 tf->ctl = dev->link->ap->ctl; 1773 #else 1774 tf->ctl = ATA_DEVCTL_OBS; 1775 #endif 1776 if (dev->devno == 0) 1777 tf->device = ATA_DEVICE_OBS; 1778 else 1779 tf->device = ATA_DEVICE_OBS | ATA_DEV1; 1780 } 1781 1782 static inline void ata_qc_reinit(struct ata_queued_cmd *qc) 1783 { 1784 qc->dma_dir = DMA_NONE; 1785 qc->sg = NULL; 1786 qc->flags = 0; 1787 qc->cursg = NULL; 1788 qc->cursg_ofs = 0; 1789 qc->nbytes = qc->extrabytes = qc->curbytes = 0; 1790 qc->n_elem = 0; 1791 qc->err_mask = 0; 1792 qc->sect_size = ATA_SECT_SIZE; 1793 1794 ata_tf_init(qc->dev, &qc->tf); 1795 1796 /* init result_tf such that it indicates normal completion */ 1797 qc->result_tf.command = ATA_DRDY; 1798 qc->result_tf.feature = 0; 1799 } 1800 1801 static inline int ata_try_flush_cache(const struct ata_device *dev) 1802 { 1803 return ata_id_wcache_enabled(dev->id) || 1804 ata_id_has_flush(dev->id) || 1805 ata_id_has_flush_ext(dev->id); 1806 } 1807 1808 static inline unsigned int ac_err_mask(u8 status) 1809 { 1810 if (status & (ATA_BUSY | ATA_DRQ)) 1811 return AC_ERR_HSM; 1812 if (status & (ATA_ERR | ATA_DF)) 1813 return AC_ERR_DEV; 1814 return 0; 1815 } 1816 1817 static inline unsigned int __ac_err_mask(u8 status) 1818 { 1819 unsigned int mask = ac_err_mask(status); 1820 if (mask == 0) 1821 return AC_ERR_OTHER; 1822 return mask; 1823 } 1824 1825 static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) 1826 { 1827 return *(struct ata_port **)&host->hostdata[0]; 1828 } 1829 1830 static inline int ata_check_ready(u8 status) 1831 { 1832 if (!(status & ATA_BUSY)) 1833 return 1; 1834 1835 /* 0xff indicates either no device or device not ready */ 1836 if (status == 0xff) 1837 return -ENODEV; 1838 1839 return 0; 1840 } 1841 1842 static inline unsigned long ata_deadline(unsigned long from_jiffies, 1843 unsigned long timeout_msecs) 1844 { 1845 return from_jiffies + msecs_to_jiffies(timeout_msecs); 1846 } 1847 1848 /* Don't open code these in drivers as there are traps. Firstly the range may 1849 change in future hardware and specs, secondly 0xFF means 'no DMA' but is 1850 > UDMA_0. Dyma ddreigiau */ 1851 1852 static inline int ata_using_mwdma(struct ata_device *adev) 1853 { 1854 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4) 1855 return 1; 1856 return 0; 1857 } 1858 1859 static inline int ata_using_udma(struct ata_device *adev) 1860 { 1861 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7) 1862 return 1; 1863 return 0; 1864 } 1865 1866 static inline int ata_dma_enabled(struct ata_device *adev) 1867 { 1868 return (adev->dma_mode == 0xFF ? 0 : 1); 1869 } 1870 1871 /************************************************************************** 1872 * PATA timings - drivers/ata/libata-pata-timings.c 1873 */ 1874 extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); 1875 extern int ata_timing_compute(struct ata_device *, unsigned short, 1876 struct ata_timing *, int, int); 1877 extern void ata_timing_merge(const struct ata_timing *, 1878 const struct ata_timing *, struct ata_timing *, 1879 unsigned int); 1880 1881 /************************************************************************** 1882 * PMP - drivers/ata/libata-pmp.c 1883 */ 1884 #ifdef CONFIG_SATA_PMP 1885 1886 extern const struct ata_port_operations sata_pmp_port_ops; 1887 1888 extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); 1889 extern void sata_pmp_error_handler(struct ata_port *ap); 1890 1891 #else /* CONFIG_SATA_PMP */ 1892 1893 #define sata_pmp_port_ops sata_port_ops 1894 #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer 1895 #define sata_pmp_error_handler ata_std_error_handler 1896 1897 #endif /* CONFIG_SATA_PMP */ 1898 1899 1900 /************************************************************************** 1901 * SFF - drivers/ata/libata-sff.c 1902 */ 1903 #ifdef CONFIG_ATA_SFF 1904 1905 extern const struct ata_port_operations ata_sff_port_ops; 1906 extern const struct ata_port_operations ata_bmdma32_port_ops; 1907 1908 /* PIO only, sg_tablesize and dma_boundary limits can be removed */ 1909 #define ATA_PIO_SHT(drv_name) \ 1910 ATA_BASE_SHT(drv_name), \ 1911 .sg_tablesize = LIBATA_MAX_PRD, \ 1912 .dma_boundary = ATA_DMA_BOUNDARY 1913 1914 extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); 1915 extern u8 ata_sff_check_status(struct ata_port *ap); 1916 extern void ata_sff_pause(struct ata_port *ap); 1917 extern void ata_sff_dma_pause(struct ata_port *ap); 1918 extern int ata_sff_busy_sleep(struct ata_port *ap, 1919 unsigned long timeout_pat, unsigned long timeout); 1920 extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline); 1921 extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); 1922 extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf); 1923 extern void ata_sff_exec_command(struct ata_port *ap, 1924 const struct ata_taskfile *tf); 1925 extern unsigned int ata_sff_data_xfer(struct ata_queued_cmd *qc, 1926 unsigned char *buf, unsigned int buflen, int rw); 1927 extern unsigned int ata_sff_data_xfer32(struct ata_queued_cmd *qc, 1928 unsigned char *buf, unsigned int buflen, int rw); 1929 extern void ata_sff_irq_on(struct ata_port *ap); 1930 extern void ata_sff_irq_clear(struct ata_port *ap); 1931 extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, 1932 u8 status, int in_wq); 1933 extern void ata_sff_queue_work(struct work_struct *work); 1934 extern void ata_sff_queue_delayed_work(struct delayed_work *dwork, 1935 unsigned long delay); 1936 extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay); 1937 extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); 1938 extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); 1939 extern unsigned int ata_sff_port_intr(struct ata_port *ap, 1940 struct ata_queued_cmd *qc); 1941 extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); 1942 extern void ata_sff_lost_interrupt(struct ata_port *ap); 1943 extern void ata_sff_freeze(struct ata_port *ap); 1944 extern void ata_sff_thaw(struct ata_port *ap); 1945 extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline); 1946 extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, 1947 u8 *r_err); 1948 extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask, 1949 unsigned long deadline); 1950 extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes, 1951 unsigned long deadline); 1952 extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class, 1953 unsigned long deadline); 1954 extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes); 1955 extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc); 1956 extern void ata_sff_error_handler(struct ata_port *ap); 1957 extern void ata_sff_std_ports(struct ata_ioports *ioaddr); 1958 #ifdef CONFIG_PCI 1959 extern int ata_pci_sff_init_host(struct ata_host *host); 1960 extern int ata_pci_sff_prepare_host(struct pci_dev *pdev, 1961 const struct ata_port_info * const * ppi, 1962 struct ata_host **r_host); 1963 extern int ata_pci_sff_activate_host(struct ata_host *host, 1964 irq_handler_t irq_handler, 1965 struct scsi_host_template *sht); 1966 extern int ata_pci_sff_init_one(struct pci_dev *pdev, 1967 const struct ata_port_info * const * ppi, 1968 struct scsi_host_template *sht, void *host_priv, int hflags); 1969 #endif /* CONFIG_PCI */ 1970 1971 #ifdef CONFIG_ATA_BMDMA 1972 1973 extern const struct ata_port_operations ata_bmdma_port_ops; 1974 1975 #define ATA_BMDMA_SHT(drv_name) \ 1976 ATA_BASE_SHT(drv_name), \ 1977 .sg_tablesize = LIBATA_MAX_PRD, \ 1978 .dma_boundary = ATA_DMA_BOUNDARY 1979 1980 extern enum ata_completion_errors ata_bmdma_qc_prep(struct ata_queued_cmd *qc); 1981 extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc); 1982 extern enum ata_completion_errors ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc); 1983 extern unsigned int ata_bmdma_port_intr(struct ata_port *ap, 1984 struct ata_queued_cmd *qc); 1985 extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance); 1986 extern void ata_bmdma_error_handler(struct ata_port *ap); 1987 extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc); 1988 extern void ata_bmdma_irq_clear(struct ata_port *ap); 1989 extern void ata_bmdma_setup(struct ata_queued_cmd *qc); 1990 extern void ata_bmdma_start(struct ata_queued_cmd *qc); 1991 extern void ata_bmdma_stop(struct ata_queued_cmd *qc); 1992 extern u8 ata_bmdma_status(struct ata_port *ap); 1993 extern int ata_bmdma_port_start(struct ata_port *ap); 1994 extern int ata_bmdma_port_start32(struct ata_port *ap); 1995 1996 #ifdef CONFIG_PCI 1997 extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); 1998 extern void ata_pci_bmdma_init(struct ata_host *host); 1999 extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev, 2000 const struct ata_port_info * const * ppi, 2001 struct ata_host **r_host); 2002 extern int ata_pci_bmdma_init_one(struct pci_dev *pdev, 2003 const struct ata_port_info * const * ppi, 2004 struct scsi_host_template *sht, 2005 void *host_priv, int hflags); 2006 #endif /* CONFIG_PCI */ 2007 #endif /* CONFIG_ATA_BMDMA */ 2008 2009 /** 2010 * ata_sff_busy_wait - Wait for a port status register 2011 * @ap: Port to wait for. 2012 * @bits: bits that must be clear 2013 * @max: number of 10uS waits to perform 2014 * 2015 * Waits up to max*10 microseconds for the selected bits in the port's 2016 * status register to be cleared. 2017 * Returns final value of status register. 2018 * 2019 * LOCKING: 2020 * Inherited from caller. 2021 */ 2022 static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits, 2023 unsigned int max) 2024 { 2025 u8 status; 2026 2027 do { 2028 udelay(10); 2029 status = ap->ops->sff_check_status(ap); 2030 max--; 2031 } while (status != 0xff && (status & bits) && (max > 0)); 2032 2033 return status; 2034 } 2035 2036 /** 2037 * ata_wait_idle - Wait for a port to be idle. 2038 * @ap: Port to wait for. 2039 * 2040 * Waits up to 10ms for port's BUSY and DRQ signals to clear. 2041 * Returns final value of status register. 2042 * 2043 * LOCKING: 2044 * Inherited from caller. 2045 */ 2046 static inline u8 ata_wait_idle(struct ata_port *ap) 2047 { 2048 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); 2049 2050 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) 2051 ata_port_dbg(ap, "abnormal Status 0x%X\n", status); 2052 2053 return status; 2054 } 2055 #endif /* CONFIG_ATA_SFF */ 2056 2057 #endif /* __LINUX_LIBATA_H__ */ 2058