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_ENABLED = (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 int 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 = ((1U << ATA_NR_PIO_MODES) - 1) << ATA_SHIFT_PIO, 430 ATA_MASK_MWDMA = ((1U << ATA_NR_MWDMA_MODES) - 1) << ATA_SHIFT_MWDMA, 431 ATA_MASK_UDMA = ((1U << ATA_NR_UDMA_MODES) - 1) << ATA_SHIFT_UDMA, 432 }; 433 434 enum hsm_task_states { 435 HSM_ST_IDLE, /* no command on going */ 436 HSM_ST_FIRST, /* (waiting the device to) 437 write CDB or first data block */ 438 HSM_ST, /* (waiting the device to) transfer data */ 439 HSM_ST_LAST, /* (waiting the device to) complete command */ 440 HSM_ST_ERR, /* error */ 441 }; 442 443 enum ata_completion_errors { 444 AC_ERR_OK = 0, /* no error */ 445 AC_ERR_DEV = (1 << 0), /* device reported error */ 446 AC_ERR_HSM = (1 << 1), /* host state machine violation */ 447 AC_ERR_TIMEOUT = (1 << 2), /* timeout */ 448 AC_ERR_MEDIA = (1 << 3), /* media error */ 449 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ 450 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ 451 AC_ERR_SYSTEM = (1 << 6), /* system error */ 452 AC_ERR_INVALID = (1 << 7), /* invalid argument */ 453 AC_ERR_OTHER = (1 << 8), /* unknown */ 454 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ 455 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ 456 }; 457 458 /* 459 * Link power management policy: If you alter this, you also need to 460 * alter libata-scsi.c (for the ascii descriptions) 461 */ 462 enum ata_lpm_policy { 463 ATA_LPM_UNKNOWN, 464 ATA_LPM_MAX_POWER, 465 ATA_LPM_MED_POWER, 466 ATA_LPM_MED_POWER_WITH_DIPM, /* Med power + DIPM as win IRST does */ 467 ATA_LPM_MIN_POWER_WITH_PARTIAL, /* Min Power + partial and slumber */ 468 ATA_LPM_MIN_POWER, /* Min power + no partial (slumber only) */ 469 }; 470 471 enum ata_lpm_hints { 472 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */ 473 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */ 474 ATA_LPM_WAKE_ONLY = (1 << 2), /* only wake up link */ 475 }; 476 477 /* forward declarations */ 478 struct scsi_device; 479 struct ata_port_operations; 480 struct ata_port; 481 struct ata_link; 482 struct ata_queued_cmd; 483 484 /* typedefs */ 485 typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); 486 typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); 487 typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, 488 unsigned long deadline); 489 typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); 490 491 extern struct device_attribute dev_attr_unload_heads; 492 #ifdef CONFIG_SATA_HOST 493 extern struct device_attribute dev_attr_link_power_management_policy; 494 extern struct device_attribute dev_attr_ncq_prio_supported; 495 extern struct device_attribute dev_attr_ncq_prio_enable; 496 extern struct device_attribute dev_attr_em_message_type; 497 extern struct device_attribute dev_attr_em_message; 498 extern struct device_attribute dev_attr_sw_activity; 499 #endif 500 501 enum sw_activity { 502 OFF, 503 BLINK_ON, 504 BLINK_OFF, 505 }; 506 507 struct ata_taskfile { 508 unsigned long flags; /* ATA_TFLAG_xxx */ 509 u8 protocol; /* ATA_PROT_xxx */ 510 511 u8 ctl; /* control reg */ 512 513 u8 hob_feature; /* additional data */ 514 u8 hob_nsect; /* to support LBA48 */ 515 u8 hob_lbal; 516 u8 hob_lbam; 517 u8 hob_lbah; 518 519 union { 520 u8 error; 521 u8 feature; 522 }; 523 u8 nsect; 524 u8 lbal; 525 u8 lbam; 526 u8 lbah; 527 528 u8 device; 529 530 union { 531 u8 status; 532 u8 command; 533 }; 534 535 u32 auxiliary; /* auxiliary field */ 536 /* from SATA 3.1 and */ 537 /* ATA-8 ACS-3 */ 538 }; 539 540 #ifdef CONFIG_ATA_SFF 541 struct ata_ioports { 542 void __iomem *cmd_addr; 543 void __iomem *data_addr; 544 void __iomem *error_addr; 545 void __iomem *feature_addr; 546 void __iomem *nsect_addr; 547 void __iomem *lbal_addr; 548 void __iomem *lbam_addr; 549 void __iomem *lbah_addr; 550 void __iomem *device_addr; 551 void __iomem *status_addr; 552 void __iomem *command_addr; 553 void __iomem *altstatus_addr; 554 void __iomem *ctl_addr; 555 #ifdef CONFIG_ATA_BMDMA 556 void __iomem *bmdma_addr; 557 #endif /* CONFIG_ATA_BMDMA */ 558 void __iomem *scr_addr; 559 }; 560 #endif /* CONFIG_ATA_SFF */ 561 562 struct ata_host { 563 spinlock_t lock; 564 struct device *dev; 565 void __iomem * const *iomap; 566 unsigned int n_ports; 567 unsigned int n_tags; /* nr of NCQ tags */ 568 void *private_data; 569 struct ata_port_operations *ops; 570 unsigned long flags; 571 struct kref kref; 572 573 struct mutex eh_mutex; 574 struct task_struct *eh_owner; 575 576 struct ata_port *simplex_claimed; /* channel owning the DMA */ 577 struct ata_port *ports[]; 578 }; 579 580 struct ata_queued_cmd { 581 struct ata_port *ap; 582 struct ata_device *dev; 583 584 struct scsi_cmnd *scsicmd; 585 void (*scsidone)(struct scsi_cmnd *); 586 587 struct ata_taskfile tf; 588 u8 cdb[ATAPI_CDB_LEN]; 589 590 unsigned long flags; /* ATA_QCFLAG_xxx */ 591 unsigned int tag; /* libata core tag */ 592 unsigned int hw_tag; /* driver tag */ 593 unsigned int n_elem; 594 unsigned int orig_n_elem; 595 596 int dma_dir; 597 598 unsigned int sect_size; 599 600 unsigned int nbytes; 601 unsigned int extrabytes; 602 unsigned int curbytes; 603 604 struct scatterlist sgent; 605 606 struct scatterlist *sg; 607 608 struct scatterlist *cursg; 609 unsigned int cursg_ofs; 610 611 unsigned int err_mask; 612 struct ata_taskfile result_tf; 613 ata_qc_cb_t complete_fn; 614 615 void *private_data; 616 void *lldd_task; 617 }; 618 619 struct ata_port_stats { 620 unsigned long unhandled_irq; 621 unsigned long idle_irq; 622 unsigned long rw_reqbuf; 623 }; 624 625 struct ata_ering_entry { 626 unsigned int eflags; 627 unsigned int err_mask; 628 u64 timestamp; 629 }; 630 631 struct ata_ering { 632 int cursor; 633 struct ata_ering_entry ring[ATA_ERING_SIZE]; 634 }; 635 636 struct ata_cpr { 637 u8 num; 638 u8 num_storage_elements; 639 u64 start_lba; 640 u64 num_lbas; 641 }; 642 643 struct ata_cpr_log { 644 u8 nr_cpr; 645 struct ata_cpr cpr[]; 646 }; 647 648 struct ata_device { 649 struct ata_link *link; 650 unsigned int devno; /* 0 or 1 */ 651 unsigned int horkage; /* List of broken features */ 652 unsigned long flags; /* ATA_DFLAG_xxx */ 653 struct scsi_device *sdev; /* attached SCSI device */ 654 void *private_data; 655 #ifdef CONFIG_ATA_ACPI 656 union acpi_object *gtf_cache; 657 unsigned int gtf_filter; 658 #endif 659 #ifdef CONFIG_SATA_ZPODD 660 void *zpodd; 661 #endif 662 struct device tdev; 663 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */ 664 u64 n_sectors; /* size of device, if ATA */ 665 u64 n_native_sectors; /* native size, if ATA */ 666 unsigned int class; /* ATA_DEV_xxx */ 667 unsigned long unpark_deadline; 668 669 u8 pio_mode; 670 u8 dma_mode; 671 u8 xfer_mode; 672 unsigned int xfer_shift; /* ATA_SHIFT_xxx */ 673 674 unsigned int multi_count; /* sectors count for 675 READ/WRITE MULTIPLE */ 676 unsigned int max_sectors; /* per-device max sectors */ 677 unsigned int cdb_len; 678 679 /* per-dev xfer mask */ 680 unsigned int pio_mask; 681 unsigned int mwdma_mask; 682 unsigned int udma_mask; 683 684 /* for CHS addressing */ 685 u16 cylinders; /* Number of cylinders */ 686 u16 heads; /* Number of heads */ 687 u16 sectors; /* Number of sectors per track */ 688 689 union { 690 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ 691 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ 692 } ____cacheline_aligned; 693 694 /* DEVSLP Timing Variables from Identify Device Data Log */ 695 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE]; 696 697 /* NCQ send and receive log subcommand support */ 698 u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE]; 699 u8 ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_SIZE]; 700 701 /* ZAC zone configuration */ 702 u32 zac_zoned_cap; 703 u32 zac_zones_optimal_open; 704 u32 zac_zones_optimal_nonseq; 705 u32 zac_zones_max_open; 706 707 /* Concurrent positioning ranges */ 708 struct ata_cpr_log *cpr_log; 709 710 /* error history */ 711 int spdn_cnt; 712 /* ering is CLEAR_END, read comment above CLEAR_END */ 713 struct ata_ering ering; 714 }; 715 716 /* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are 717 * cleared to zero on ata_dev_init(). 718 */ 719 #define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors) 720 #define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering) 721 722 struct ata_eh_info { 723 struct ata_device *dev; /* offending device */ 724 u32 serror; /* SError from LLDD */ 725 unsigned int err_mask; /* port-wide err_mask */ 726 unsigned int action; /* ATA_EH_* action mask */ 727 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ 728 unsigned int flags; /* ATA_EHI_* flags */ 729 730 unsigned int probe_mask; 731 732 char desc[ATA_EH_DESC_LEN]; 733 int desc_len; 734 }; 735 736 struct ata_eh_context { 737 struct ata_eh_info i; 738 int tries[ATA_MAX_DEVICES]; 739 int cmd_timeout_idx[ATA_MAX_DEVICES] 740 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE]; 741 unsigned int classes[ATA_MAX_DEVICES]; 742 unsigned int did_probe_mask; 743 unsigned int unloaded_mask; 744 unsigned int saved_ncq_enabled; 745 u8 saved_xfer_mode[ATA_MAX_DEVICES]; 746 /* timestamp for the last reset attempt or success */ 747 unsigned long last_reset; 748 }; 749 750 struct ata_acpi_drive 751 { 752 u32 pio; 753 u32 dma; 754 } __packed; 755 756 struct ata_acpi_gtm { 757 struct ata_acpi_drive drive[2]; 758 u32 flags; 759 } __packed; 760 761 struct ata_link { 762 struct ata_port *ap; 763 int pmp; /* port multiplier port # */ 764 765 struct device tdev; 766 unsigned int active_tag; /* active tag on this link */ 767 u32 sactive; /* active NCQ commands */ 768 769 unsigned int flags; /* ATA_LFLAG_xxx */ 770 771 u32 saved_scontrol; /* SControl on probe */ 772 unsigned int hw_sata_spd_limit; 773 unsigned int sata_spd_limit; 774 unsigned int sata_spd; /* current SATA PHY speed */ 775 enum ata_lpm_policy lpm_policy; 776 777 /* record runtime error info, protected by host_set lock */ 778 struct ata_eh_info eh_info; 779 /* EH context */ 780 struct ata_eh_context eh_context; 781 782 struct ata_device device[ATA_MAX_DEVICES]; 783 784 unsigned long last_lpm_change; /* when last LPM change happened */ 785 }; 786 #define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag) 787 #define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0]) 788 789 struct ata_port { 790 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ 791 struct ata_port_operations *ops; 792 spinlock_t *lock; 793 /* Flags owned by the EH context. Only EH should touch these once the 794 port is active */ 795 unsigned long flags; /* ATA_FLAG_xxx */ 796 /* Flags that change dynamically, protected by ap->lock */ 797 unsigned int pflags; /* ATA_PFLAG_xxx */ 798 unsigned int print_id; /* user visible unique port ID */ 799 unsigned int local_port_no; /* host local port num */ 800 unsigned int port_no; /* 0 based port no. inside the host */ 801 802 #ifdef CONFIG_ATA_SFF 803 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ 804 u8 ctl; /* cache of ATA control register */ 805 u8 last_ctl; /* Cache last written value */ 806 struct ata_link* sff_pio_task_link; /* link currently used */ 807 struct delayed_work sff_pio_task; 808 #ifdef CONFIG_ATA_BMDMA 809 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */ 810 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */ 811 #endif /* CONFIG_ATA_BMDMA */ 812 #endif /* CONFIG_ATA_SFF */ 813 814 unsigned int pio_mask; 815 unsigned int mwdma_mask; 816 unsigned int udma_mask; 817 unsigned int cbl; /* cable type; ATA_CBL_xxx */ 818 819 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE + 1]; 820 u64 qc_active; 821 int nr_active_links; /* #links with active qcs */ 822 823 struct ata_link link; /* host default link */ 824 struct ata_link *slave_link; /* see ata_slave_link_init() */ 825 826 int nr_pmp_links; /* nr of available PMP links */ 827 struct ata_link *pmp_link; /* array of PMP links */ 828 struct ata_link *excl_link; /* for PMP qc exclusion */ 829 830 struct ata_port_stats stats; 831 struct ata_host *host; 832 struct device *dev; 833 struct device tdev; 834 835 struct mutex scsi_scan_mutex; 836 struct delayed_work hotplug_task; 837 struct work_struct scsi_rescan_task; 838 839 unsigned int hsm_task_state; 840 841 struct list_head eh_done_q; 842 wait_queue_head_t eh_wait_q; 843 int eh_tries; 844 struct completion park_req_pending; 845 846 pm_message_t pm_mesg; 847 enum ata_lpm_policy target_lpm_policy; 848 849 struct timer_list fastdrain_timer; 850 unsigned int fastdrain_cnt; 851 852 async_cookie_t cookie; 853 854 int em_message_type; 855 void *private_data; 856 857 #ifdef CONFIG_ATA_ACPI 858 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */ 859 #endif 860 /* owned by EH */ 861 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned; 862 }; 863 864 /* The following initializer overrides a method to NULL whether one of 865 * its parent has the method defined or not. This is equivalent to 866 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant 867 * expression and thus can't be used as an initializer. 868 */ 869 #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT) 870 871 struct ata_port_operations { 872 /* 873 * Command execution 874 */ 875 int (*qc_defer)(struct ata_queued_cmd *qc); 876 int (*check_atapi_dma)(struct ata_queued_cmd *qc); 877 enum ata_completion_errors (*qc_prep)(struct ata_queued_cmd *qc); 878 unsigned int (*qc_issue)(struct ata_queued_cmd *qc); 879 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc); 880 881 /* 882 * Configuration and exception handling 883 */ 884 int (*cable_detect)(struct ata_port *ap); 885 unsigned int (*mode_filter)(struct ata_device *dev, unsigned int xfer_mask); 886 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev); 887 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev); 888 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev); 889 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, 890 __le16 *id); 891 892 void (*dev_config)(struct ata_device *dev); 893 894 void (*freeze)(struct ata_port *ap); 895 void (*thaw)(struct ata_port *ap); 896 ata_prereset_fn_t prereset; 897 ata_reset_fn_t softreset; 898 ata_reset_fn_t hardreset; 899 ata_postreset_fn_t postreset; 900 ata_prereset_fn_t pmp_prereset; 901 ata_reset_fn_t pmp_softreset; 902 ata_reset_fn_t pmp_hardreset; 903 ata_postreset_fn_t pmp_postreset; 904 void (*error_handler)(struct ata_port *ap); 905 void (*lost_interrupt)(struct ata_port *ap); 906 void (*post_internal_cmd)(struct ata_queued_cmd *qc); 907 void (*sched_eh)(struct ata_port *ap); 908 void (*end_eh)(struct ata_port *ap); 909 910 /* 911 * Optional features 912 */ 913 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val); 914 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val); 915 void (*pmp_attach)(struct ata_port *ap); 916 void (*pmp_detach)(struct ata_port *ap); 917 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy, 918 unsigned hints); 919 920 /* 921 * Start, stop, suspend and resume 922 */ 923 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg); 924 int (*port_resume)(struct ata_port *ap); 925 int (*port_start)(struct ata_port *ap); 926 void (*port_stop)(struct ata_port *ap); 927 void (*host_stop)(struct ata_host *host); 928 929 #ifdef CONFIG_ATA_SFF 930 /* 931 * SFF / taskfile oriented ops 932 */ 933 void (*sff_dev_select)(struct ata_port *ap, unsigned int device); 934 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl); 935 u8 (*sff_check_status)(struct ata_port *ap); 936 u8 (*sff_check_altstatus)(struct ata_port *ap); 937 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf); 938 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf); 939 void (*sff_exec_command)(struct ata_port *ap, 940 const struct ata_taskfile *tf); 941 unsigned int (*sff_data_xfer)(struct ata_queued_cmd *qc, 942 unsigned char *buf, unsigned int buflen, int rw); 943 void (*sff_irq_on)(struct ata_port *); 944 bool (*sff_irq_check)(struct ata_port *); 945 void (*sff_irq_clear)(struct ata_port *); 946 void (*sff_drain_fifo)(struct ata_queued_cmd *qc); 947 948 #ifdef CONFIG_ATA_BMDMA 949 void (*bmdma_setup)(struct ata_queued_cmd *qc); 950 void (*bmdma_start)(struct ata_queued_cmd *qc); 951 void (*bmdma_stop)(struct ata_queued_cmd *qc); 952 u8 (*bmdma_status)(struct ata_port *ap); 953 #endif /* CONFIG_ATA_BMDMA */ 954 #endif /* CONFIG_ATA_SFF */ 955 956 ssize_t (*em_show)(struct ata_port *ap, char *buf); 957 ssize_t (*em_store)(struct ata_port *ap, const char *message, 958 size_t size); 959 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf); 960 ssize_t (*sw_activity_store)(struct ata_device *dev, 961 enum sw_activity val); 962 ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state, 963 ssize_t size); 964 965 /* 966 * Obsolete 967 */ 968 void (*phy_reset)(struct ata_port *ap); 969 void (*eng_timeout)(struct ata_port *ap); 970 971 /* 972 * ->inherits must be the last field and all the preceding 973 * fields must be pointers. 974 */ 975 const struct ata_port_operations *inherits; 976 }; 977 978 struct ata_port_info { 979 unsigned long flags; 980 unsigned long link_flags; 981 unsigned int pio_mask; 982 unsigned int mwdma_mask; 983 unsigned int udma_mask; 984 struct ata_port_operations *port_ops; 985 void *private_data; 986 }; 987 988 struct ata_timing { 989 unsigned short mode; /* ATA mode */ 990 unsigned short setup; /* t1 */ 991 unsigned short act8b; /* t2 for 8-bit I/O */ 992 unsigned short rec8b; /* t2i for 8-bit I/O */ 993 unsigned short cyc8b; /* t0 for 8-bit I/O */ 994 unsigned short active; /* t2 or tD */ 995 unsigned short recover; /* t2i or tK */ 996 unsigned short dmack_hold; /* tj */ 997 unsigned short cycle; /* t0 */ 998 unsigned short udma; /* t2CYCTYP/2 */ 999 }; 1000 1001 /* 1002 * Core layer - drivers/ata/libata-core.c 1003 */ 1004 extern struct ata_port_operations ata_dummy_port_ops; 1005 extern const struct ata_port_info ata_dummy_port_info; 1006 1007 static inline bool ata_is_atapi(u8 prot) 1008 { 1009 return prot & ATA_PROT_FLAG_ATAPI; 1010 } 1011 1012 static inline bool ata_is_pio(u8 prot) 1013 { 1014 return prot & ATA_PROT_FLAG_PIO; 1015 } 1016 1017 static inline bool ata_is_dma(u8 prot) 1018 { 1019 return prot & ATA_PROT_FLAG_DMA; 1020 } 1021 1022 static inline bool ata_is_ncq(u8 prot) 1023 { 1024 return prot & ATA_PROT_FLAG_NCQ; 1025 } 1026 1027 static inline bool ata_is_data(u8 prot) 1028 { 1029 return prot & (ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA); 1030 } 1031 1032 static inline int is_multi_taskfile(struct ata_taskfile *tf) 1033 { 1034 return (tf->command == ATA_CMD_READ_MULTI) || 1035 (tf->command == ATA_CMD_WRITE_MULTI) || 1036 (tf->command == ATA_CMD_READ_MULTI_EXT) || 1037 (tf->command == ATA_CMD_WRITE_MULTI_EXT) || 1038 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); 1039 } 1040 1041 static inline int ata_port_is_dummy(struct ata_port *ap) 1042 { 1043 return ap->ops == &ata_dummy_port_ops; 1044 } 1045 1046 static inline bool ata_port_is_frozen(const struct ata_port *ap) 1047 { 1048 return ap->pflags & ATA_PFLAG_FROZEN; 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 int ata_pack_xfermask(unsigned int pio_mask, 1108 unsigned int mwdma_mask, 1109 unsigned int udma_mask); 1110 extern void ata_unpack_xfermask(unsigned int xfer_mask, 1111 unsigned int *pio_mask, 1112 unsigned int *mwdma_mask, 1113 unsigned int *udma_mask); 1114 extern u8 ata_xfer_mask2mode(unsigned int xfer_mask); 1115 extern unsigned int ata_xfer_mode2mask(u8 xfer_mode); 1116 extern int ata_xfer_mode2shift(u8 xfer_mode); 1117 extern const char *ata_mode_string(unsigned int xfer_mask); 1118 extern unsigned int ata_id_xfermask(const u16 *id); 1119 extern int ata_std_qc_defer(struct ata_queued_cmd *qc); 1120 extern enum ata_completion_errors ata_noop_qc_prep(struct ata_queued_cmd *qc); 1121 extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, 1122 unsigned int n_elem); 1123 extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); 1124 extern unsigned int ata_port_classify(struct ata_port *ap, 1125 const struct ata_taskfile *tf); 1126 extern void ata_dev_disable(struct ata_device *adev); 1127 extern void ata_id_string(const u16 *id, unsigned char *s, 1128 unsigned int ofs, unsigned int len); 1129 extern void ata_id_c_string(const u16 *id, unsigned char *s, 1130 unsigned int ofs, unsigned int len); 1131 extern unsigned int ata_do_dev_read_id(struct ata_device *dev, 1132 struct ata_taskfile *tf, __le16 *id); 1133 extern void ata_qc_complete(struct ata_queued_cmd *qc); 1134 extern u64 ata_qc_get_active(struct ata_port *ap); 1135 extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd); 1136 extern int ata_std_bios_param(struct scsi_device *sdev, 1137 struct block_device *bdev, 1138 sector_t capacity, int geom[]); 1139 extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev); 1140 extern int ata_scsi_slave_config(struct scsi_device *sdev); 1141 extern void ata_scsi_slave_destroy(struct scsi_device *sdev); 1142 extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, 1143 int queue_depth); 1144 extern int ata_change_queue_depth(struct ata_port *ap, struct ata_device *dev, 1145 struct scsi_device *sdev, int queue_depth); 1146 extern struct ata_device *ata_dev_pair(struct ata_device *adev); 1147 extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); 1148 extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap); 1149 extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q); 1150 1151 /* 1152 * SATA specific code - drivers/ata/libata-sata.c 1153 */ 1154 #ifdef CONFIG_SATA_HOST 1155 extern const unsigned long sata_deb_timing_normal[]; 1156 extern const unsigned long sata_deb_timing_hotplug[]; 1157 extern const unsigned long sata_deb_timing_long[]; 1158 1159 static inline const unsigned long * 1160 sata_ehc_deb_timing(struct ata_eh_context *ehc) 1161 { 1162 if (ehc->i.flags & ATA_EHI_HOTPLUGGED) 1163 return sata_deb_timing_hotplug; 1164 else 1165 return sata_deb_timing_normal; 1166 } 1167 1168 extern int sata_scr_valid(struct ata_link *link); 1169 extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); 1170 extern int sata_scr_write(struct ata_link *link, int reg, u32 val); 1171 extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); 1172 extern int sata_set_spd(struct ata_link *link); 1173 extern int sata_link_hardreset(struct ata_link *link, 1174 const unsigned long *timing, unsigned long deadline, 1175 bool *online, int (*check_ready)(struct ata_link *)); 1176 extern int sata_link_resume(struct ata_link *link, const unsigned long *params, 1177 unsigned long deadline); 1178 extern void ata_eh_analyze_ncq_error(struct ata_link *link); 1179 #else 1180 static inline const unsigned long * 1181 sata_ehc_deb_timing(struct ata_eh_context *ehc) 1182 { 1183 return NULL; 1184 } 1185 static inline int sata_scr_valid(struct ata_link *link) { return 0; } 1186 static inline int sata_scr_read(struct ata_link *link, int reg, u32 *val) 1187 { 1188 return -EOPNOTSUPP; 1189 } 1190 static inline int sata_scr_write(struct ata_link *link, int reg, u32 val) 1191 { 1192 return -EOPNOTSUPP; 1193 } 1194 static inline int sata_scr_write_flush(struct ata_link *link, int reg, u32 val) 1195 { 1196 return -EOPNOTSUPP; 1197 } 1198 static inline int sata_set_spd(struct ata_link *link) { return -EOPNOTSUPP; } 1199 static inline int sata_link_hardreset(struct ata_link *link, 1200 const unsigned long *timing, 1201 unsigned long deadline, 1202 bool *online, 1203 int (*check_ready)(struct ata_link *)) 1204 { 1205 if (online) 1206 *online = false; 1207 return -EOPNOTSUPP; 1208 } 1209 static inline int sata_link_resume(struct ata_link *link, 1210 const unsigned long *params, 1211 unsigned long deadline) 1212 { 1213 return -EOPNOTSUPP; 1214 } 1215 static inline void ata_eh_analyze_ncq_error(struct ata_link *link) { } 1216 #endif 1217 extern int sata_link_debounce(struct ata_link *link, 1218 const unsigned long *params, unsigned long deadline); 1219 extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy, 1220 bool spm_wakeup); 1221 extern int ata_slave_link_init(struct ata_port *ap); 1222 extern void ata_sas_port_destroy(struct ata_port *); 1223 extern struct ata_port *ata_sas_port_alloc(struct ata_host *, 1224 struct ata_port_info *, struct Scsi_Host *); 1225 extern void ata_sas_async_probe(struct ata_port *ap); 1226 extern int ata_sas_sync_probe(struct ata_port *ap); 1227 extern int ata_sas_port_init(struct ata_port *); 1228 extern int ata_sas_port_start(struct ata_port *ap); 1229 extern int ata_sas_tport_add(struct device *parent, struct ata_port *ap); 1230 extern void ata_sas_tport_delete(struct ata_port *ap); 1231 extern void ata_sas_port_stop(struct ata_port *ap); 1232 extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); 1233 extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap); 1234 extern void ata_tf_to_fis(const struct ata_taskfile *tf, 1235 u8 pmp, int is_cmd, u8 *fis); 1236 extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); 1237 extern int ata_qc_complete_multiple(struct ata_port *ap, u64 qc_active); 1238 extern bool sata_lpm_ignore_phy_events(struct ata_link *link); 1239 extern int sata_async_notification(struct ata_port *ap); 1240 1241 extern int ata_cable_40wire(struct ata_port *ap); 1242 extern int ata_cable_80wire(struct ata_port *ap); 1243 extern int ata_cable_sata(struct ata_port *ap); 1244 extern int ata_cable_ignore(struct ata_port *ap); 1245 extern int ata_cable_unknown(struct ata_port *ap); 1246 1247 /* Timing helpers */ 1248 extern unsigned int ata_pio_need_iordy(const struct ata_device *); 1249 extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); 1250 1251 /* PCI */ 1252 #ifdef CONFIG_PCI 1253 struct pci_dev; 1254 1255 struct pci_bits { 1256 unsigned int reg; /* PCI config register to read */ 1257 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ 1258 unsigned long mask; 1259 unsigned long val; 1260 }; 1261 1262 extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); 1263 extern void ata_pci_shutdown_one(struct pci_dev *pdev); 1264 extern void ata_pci_remove_one(struct pci_dev *pdev); 1265 1266 #ifdef CONFIG_PM 1267 extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); 1268 extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); 1269 extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); 1270 extern int ata_pci_device_resume(struct pci_dev *pdev); 1271 #endif /* CONFIG_PM */ 1272 #endif /* CONFIG_PCI */ 1273 1274 struct platform_device; 1275 1276 extern int ata_platform_remove_one(struct platform_device *pdev); 1277 1278 /* 1279 * ACPI - drivers/ata/libata-acpi.c 1280 */ 1281 #ifdef CONFIG_ATA_ACPI 1282 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1283 { 1284 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) 1285 return &ap->__acpi_init_gtm; 1286 return NULL; 1287 } 1288 int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); 1289 int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); 1290 unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, 1291 const struct ata_acpi_gtm *gtm); 1292 int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm); 1293 #else 1294 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1295 { 1296 return NULL; 1297 } 1298 1299 static inline int ata_acpi_stm(const struct ata_port *ap, 1300 struct ata_acpi_gtm *stm) 1301 { 1302 return -ENOSYS; 1303 } 1304 1305 static inline int ata_acpi_gtm(const struct ata_port *ap, 1306 struct ata_acpi_gtm *stm) 1307 { 1308 return -ENOSYS; 1309 } 1310 1311 static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, 1312 const struct ata_acpi_gtm *gtm) 1313 { 1314 return 0; 1315 } 1316 1317 static inline int ata_acpi_cbl_80wire(struct ata_port *ap, 1318 const struct ata_acpi_gtm *gtm) 1319 { 1320 return 0; 1321 } 1322 #endif 1323 1324 /* 1325 * EH - drivers/ata/libata-eh.c 1326 */ 1327 extern void ata_port_schedule_eh(struct ata_port *ap); 1328 extern void ata_port_wait_eh(struct ata_port *ap); 1329 extern int ata_link_abort(struct ata_link *link); 1330 extern int ata_port_abort(struct ata_port *ap); 1331 extern int ata_port_freeze(struct ata_port *ap); 1332 1333 extern void ata_eh_freeze_port(struct ata_port *ap); 1334 extern void ata_eh_thaw_port(struct ata_port *ap); 1335 1336 extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); 1337 extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); 1338 1339 extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, 1340 ata_reset_fn_t softreset, ata_reset_fn_t hardreset, 1341 ata_postreset_fn_t postreset); 1342 extern void ata_std_error_handler(struct ata_port *ap); 1343 extern void ata_std_sched_eh(struct ata_port *ap); 1344 extern void ata_std_end_eh(struct ata_port *ap); 1345 extern int ata_link_nr_enabled(struct ata_link *link); 1346 1347 /* 1348 * Base operations to inherit from and initializers for sht 1349 * 1350 * Operations 1351 * 1352 * base : Common to all libata drivers. 1353 * sata : SATA controllers w/ native interface. 1354 * pmp : SATA controllers w/ PMP support. 1355 * sff : SFF ATA controllers w/o BMDMA support. 1356 * bmdma : SFF ATA controllers w/ BMDMA support. 1357 * 1358 * sht initializers 1359 * 1360 * BASE : Common to all libata drivers. The user must set 1361 * sg_tablesize and dma_boundary. 1362 * PIO : SFF ATA controllers w/ only PIO support. 1363 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and 1364 * dma_boundary are set to BMDMA limits. 1365 * NCQ : SATA controllers supporting NCQ. The user must set 1366 * sg_tablesize, dma_boundary and can_queue. 1367 */ 1368 extern const struct ata_port_operations ata_base_port_ops; 1369 extern const struct ata_port_operations sata_port_ops; 1370 extern const struct attribute_group *ata_common_sdev_groups[]; 1371 1372 /* 1373 * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated 1374 * by the edge drivers. Because the 'module' field of sht must be the 1375 * edge driver's module reference, otherwise the driver can be unloaded 1376 * even if the scsi_device is being accessed. 1377 */ 1378 #define __ATA_BASE_SHT(drv_name) \ 1379 .module = THIS_MODULE, \ 1380 .name = drv_name, \ 1381 .ioctl = ata_scsi_ioctl, \ 1382 ATA_SCSI_COMPAT_IOCTL \ 1383 .queuecommand = ata_scsi_queuecmd, \ 1384 .dma_need_drain = ata_scsi_dma_need_drain, \ 1385 .this_id = ATA_SHT_THIS_ID, \ 1386 .emulated = ATA_SHT_EMULATED, \ 1387 .proc_name = drv_name, \ 1388 .slave_destroy = ata_scsi_slave_destroy, \ 1389 .bios_param = ata_std_bios_param, \ 1390 .unlock_native_capacity = ata_scsi_unlock_native_capacity,\ 1391 .max_sectors = ATA_MAX_SECTORS_LBA48 1392 1393 #define ATA_SUBBASE_SHT(drv_name) \ 1394 __ATA_BASE_SHT(drv_name), \ 1395 .can_queue = ATA_DEF_QUEUE, \ 1396 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \ 1397 .slave_configure = ata_scsi_slave_config 1398 1399 #define ATA_SUBBASE_SHT_QD(drv_name, drv_qd) \ 1400 __ATA_BASE_SHT(drv_name), \ 1401 .can_queue = drv_qd, \ 1402 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \ 1403 .slave_configure = ata_scsi_slave_config 1404 1405 #define ATA_BASE_SHT(drv_name) \ 1406 ATA_SUBBASE_SHT(drv_name), \ 1407 .sdev_groups = ata_common_sdev_groups 1408 1409 #ifdef CONFIG_SATA_HOST 1410 extern const struct attribute_group *ata_ncq_sdev_groups[]; 1411 1412 #define ATA_NCQ_SHT(drv_name) \ 1413 ATA_SUBBASE_SHT(drv_name), \ 1414 .sdev_groups = ata_ncq_sdev_groups, \ 1415 .change_queue_depth = ata_scsi_change_queue_depth 1416 1417 #define ATA_NCQ_SHT_QD(drv_name, drv_qd) \ 1418 ATA_SUBBASE_SHT_QD(drv_name, drv_qd), \ 1419 .sdev_groups = ata_ncq_sdev_groups, \ 1420 .change_queue_depth = ata_scsi_change_queue_depth 1421 #endif 1422 1423 /* 1424 * PMP helpers 1425 */ 1426 #ifdef CONFIG_SATA_PMP 1427 static inline bool sata_pmp_supported(struct ata_port *ap) 1428 { 1429 return ap->flags & ATA_FLAG_PMP; 1430 } 1431 1432 static inline bool sata_pmp_attached(struct ata_port *ap) 1433 { 1434 return ap->nr_pmp_links != 0; 1435 } 1436 1437 static inline bool ata_is_host_link(const struct ata_link *link) 1438 { 1439 return link == &link->ap->link || link == link->ap->slave_link; 1440 } 1441 #else /* CONFIG_SATA_PMP */ 1442 static inline bool sata_pmp_supported(struct ata_port *ap) 1443 { 1444 return false; 1445 } 1446 1447 static inline bool sata_pmp_attached(struct ata_port *ap) 1448 { 1449 return false; 1450 } 1451 1452 static inline bool ata_is_host_link(const struct ata_link *link) 1453 { 1454 return true; 1455 } 1456 #endif /* CONFIG_SATA_PMP */ 1457 1458 static inline int sata_srst_pmp(struct ata_link *link) 1459 { 1460 if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) 1461 return SATA_PMP_CTRL_PORT; 1462 return link->pmp; 1463 } 1464 1465 #define ata_port_printk(level, ap, fmt, ...) \ 1466 pr_ ## level ("ata%u: " fmt, (ap)->print_id, ##__VA_ARGS__) 1467 1468 #define ata_port_err(ap, fmt, ...) \ 1469 ata_port_printk(err, ap, fmt, ##__VA_ARGS__) 1470 #define ata_port_warn(ap, fmt, ...) \ 1471 ata_port_printk(warn, ap, fmt, ##__VA_ARGS__) 1472 #define ata_port_notice(ap, fmt, ...) \ 1473 ata_port_printk(notice, ap, fmt, ##__VA_ARGS__) 1474 #define ata_port_info(ap, fmt, ...) \ 1475 ata_port_printk(info, ap, fmt, ##__VA_ARGS__) 1476 #define ata_port_dbg(ap, fmt, ...) \ 1477 ata_port_printk(debug, ap, fmt, ##__VA_ARGS__) 1478 1479 #define ata_link_printk(level, link, fmt, ...) \ 1480 do { \ 1481 if (sata_pmp_attached((link)->ap) || \ 1482 (link)->ap->slave_link) \ 1483 pr_ ## level ("ata%u.%02u: " fmt, \ 1484 (link)->ap->print_id, \ 1485 (link)->pmp, \ 1486 ##__VA_ARGS__); \ 1487 else \ 1488 pr_ ## level ("ata%u: " fmt, \ 1489 (link)->ap->print_id, \ 1490 ##__VA_ARGS__); \ 1491 } while (0) 1492 1493 #define ata_link_err(link, fmt, ...) \ 1494 ata_link_printk(err, link, fmt, ##__VA_ARGS__) 1495 #define ata_link_warn(link, fmt, ...) \ 1496 ata_link_printk(warn, link, fmt, ##__VA_ARGS__) 1497 #define ata_link_notice(link, fmt, ...) \ 1498 ata_link_printk(notice, link, fmt, ##__VA_ARGS__) 1499 #define ata_link_info(link, fmt, ...) \ 1500 ata_link_printk(info, link, fmt, ##__VA_ARGS__) 1501 #define ata_link_dbg(link, fmt, ...) \ 1502 ata_link_printk(debug, link, fmt, ##__VA_ARGS__) 1503 1504 #define ata_dev_printk(level, dev, fmt, ...) \ 1505 pr_ ## level("ata%u.%02u: " fmt, \ 1506 (dev)->link->ap->print_id, \ 1507 (dev)->link->pmp + (dev)->devno, \ 1508 ##__VA_ARGS__) 1509 1510 #define ata_dev_err(dev, fmt, ...) \ 1511 ata_dev_printk(err, dev, fmt, ##__VA_ARGS__) 1512 #define ata_dev_warn(dev, fmt, ...) \ 1513 ata_dev_printk(warn, dev, fmt, ##__VA_ARGS__) 1514 #define ata_dev_notice(dev, fmt, ...) \ 1515 ata_dev_printk(notice, dev, fmt, ##__VA_ARGS__) 1516 #define ata_dev_info(dev, fmt, ...) \ 1517 ata_dev_printk(info, dev, fmt, ##__VA_ARGS__) 1518 #define ata_dev_dbg(dev, fmt, ...) \ 1519 ata_dev_printk(debug, dev, fmt, ##__VA_ARGS__) 1520 1521 void ata_print_version(const struct device *dev, const char *version); 1522 1523 /* 1524 * ata_eh_info helpers 1525 */ 1526 extern __printf(2, 3) 1527 void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); 1528 extern __printf(2, 3) 1529 void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); 1530 extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); 1531 1532 static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) 1533 { 1534 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; 1535 ehi->flags |= ATA_EHI_HOTPLUGGED; 1536 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK; 1537 ehi->err_mask |= AC_ERR_ATA_BUS; 1538 } 1539 1540 /* 1541 * port description helpers 1542 */ 1543 extern __printf(2, 3) 1544 void ata_port_desc(struct ata_port *ap, const char *fmt, ...); 1545 #ifdef CONFIG_PCI 1546 extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, 1547 const char *name); 1548 #endif 1549 1550 static inline bool ata_tag_internal(unsigned int tag) 1551 { 1552 return tag == ATA_TAG_INTERNAL; 1553 } 1554 1555 static inline bool ata_tag_valid(unsigned int tag) 1556 { 1557 return tag < ATA_MAX_QUEUE || ata_tag_internal(tag); 1558 } 1559 1560 #define __ata_qc_for_each(ap, qc, tag, max_tag, fn) \ 1561 for ((tag) = 0; (tag) < (max_tag) && \ 1562 ({ qc = fn((ap), (tag)); 1; }); (tag)++) \ 1563 1564 /* 1565 * Internal use only, iterate commands ignoring error handling and 1566 * status of 'qc'. 1567 */ 1568 #define ata_qc_for_each_raw(ap, qc, tag) \ 1569 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, __ata_qc_from_tag) 1570 1571 /* 1572 * Iterate all potential commands that can be queued 1573 */ 1574 #define ata_qc_for_each(ap, qc, tag) \ 1575 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, ata_qc_from_tag) 1576 1577 /* 1578 * Like ata_qc_for_each, but with the internal tag included 1579 */ 1580 #define ata_qc_for_each_with_internal(ap, qc, tag) \ 1581 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE + 1, ata_qc_from_tag) 1582 1583 /* 1584 * device helpers 1585 */ 1586 static inline unsigned int ata_class_enabled(unsigned int class) 1587 { 1588 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || 1589 class == ATA_DEV_PMP || class == ATA_DEV_SEMB || 1590 class == ATA_DEV_ZAC; 1591 } 1592 1593 static inline unsigned int ata_class_disabled(unsigned int class) 1594 { 1595 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || 1596 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP || 1597 class == ATA_DEV_ZAC_UNSUP; 1598 } 1599 1600 static inline unsigned int ata_class_absent(unsigned int class) 1601 { 1602 return !ata_class_enabled(class) && !ata_class_disabled(class); 1603 } 1604 1605 static inline unsigned int ata_dev_enabled(const struct ata_device *dev) 1606 { 1607 return ata_class_enabled(dev->class); 1608 } 1609 1610 static inline unsigned int ata_dev_disabled(const struct ata_device *dev) 1611 { 1612 return ata_class_disabled(dev->class); 1613 } 1614 1615 static inline unsigned int ata_dev_absent(const struct ata_device *dev) 1616 { 1617 return ata_class_absent(dev->class); 1618 } 1619 1620 /* 1621 * link helpers 1622 */ 1623 static inline int ata_link_max_devices(const struct ata_link *link) 1624 { 1625 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) 1626 return 2; 1627 return 1; 1628 } 1629 1630 static inline int ata_link_active(struct ata_link *link) 1631 { 1632 return ata_tag_valid(link->active_tag) || link->sactive; 1633 } 1634 1635 /* 1636 * Iterators 1637 * 1638 * ATA_LITER_* constants are used to select link iteration mode and 1639 * ATA_DITER_* device iteration mode. 1640 * 1641 * For a custom iteration directly using ata_{link|dev}_next(), if 1642 * @link or @dev, respectively, is NULL, the first element is 1643 * returned. @dev and @link can be any valid device or link and the 1644 * next element according to the iteration mode will be returned. 1645 * After the last element, NULL is returned. 1646 */ 1647 enum ata_link_iter_mode { 1648 ATA_LITER_EDGE, /* if present, PMP links only; otherwise, 1649 * host link. no slave link */ 1650 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */ 1651 ATA_LITER_PMP_FIRST, /* PMP links followed by host link, 1652 * slave link still comes after host link */ 1653 }; 1654 1655 enum ata_dev_iter_mode { 1656 ATA_DITER_ENABLED, 1657 ATA_DITER_ENABLED_REVERSE, 1658 ATA_DITER_ALL, 1659 ATA_DITER_ALL_REVERSE, 1660 }; 1661 1662 extern struct ata_link *ata_link_next(struct ata_link *link, 1663 struct ata_port *ap, 1664 enum ata_link_iter_mode mode); 1665 1666 extern struct ata_device *ata_dev_next(struct ata_device *dev, 1667 struct ata_link *link, 1668 enum ata_dev_iter_mode mode); 1669 1670 /* 1671 * Shortcut notation for iterations 1672 * 1673 * ata_for_each_link() iterates over each link of @ap according to 1674 * @mode. @link points to the current link in the loop. @link is 1675 * NULL after loop termination. ata_for_each_dev() works the same way 1676 * except that it iterates over each device of @link. 1677 * 1678 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be 1679 * specified when using the following shorthand notations. Only the 1680 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be 1681 * specified. This not only increases brevity but also makes it 1682 * impossible to use ATA_LITER_* for device iteration or vice-versa. 1683 */ 1684 #define ata_for_each_link(link, ap, mode) \ 1685 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \ 1686 (link) = ata_link_next((link), (ap), ATA_LITER_##mode)) 1687 1688 #define ata_for_each_dev(dev, link, mode) \ 1689 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \ 1690 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode)) 1691 1692 /** 1693 * ata_ncq_enabled - Test whether NCQ is enabled 1694 * @dev: ATA device to test for 1695 * 1696 * LOCKING: 1697 * spin_lock_irqsave(host lock) 1698 * 1699 * RETURNS: 1700 * 1 if NCQ is enabled for @dev, 0 otherwise. 1701 */ 1702 static inline int ata_ncq_enabled(struct ata_device *dev) 1703 { 1704 if (!IS_ENABLED(CONFIG_SATA_HOST)) 1705 return 0; 1706 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | 1707 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; 1708 } 1709 1710 static inline bool ata_fpdma_dsm_supported(struct ata_device *dev) 1711 { 1712 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1713 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] & 1714 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM); 1715 } 1716 1717 static inline bool ata_fpdma_read_log_supported(struct ata_device *dev) 1718 { 1719 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1720 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET] & 1721 ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED); 1722 } 1723 1724 static inline bool ata_fpdma_zac_mgmt_in_supported(struct ata_device *dev) 1725 { 1726 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1727 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET] & 1728 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED); 1729 } 1730 1731 static inline bool ata_fpdma_zac_mgmt_out_supported(struct ata_device *dev) 1732 { 1733 return (dev->ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET] & 1734 ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT); 1735 } 1736 1737 static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) 1738 { 1739 qc->tf.ctl |= ATA_NIEN; 1740 } 1741 1742 static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, 1743 unsigned int tag) 1744 { 1745 if (ata_tag_valid(tag)) 1746 return &ap->qcmd[tag]; 1747 return NULL; 1748 } 1749 1750 static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, 1751 unsigned int tag) 1752 { 1753 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); 1754 1755 if (unlikely(!qc) || !ap->ops->error_handler) 1756 return qc; 1757 1758 if ((qc->flags & (ATA_QCFLAG_ACTIVE | 1759 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) 1760 return qc; 1761 1762 return NULL; 1763 } 1764 1765 static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc) 1766 { 1767 return qc->nbytes - min(qc->extrabytes, qc->nbytes); 1768 } 1769 1770 static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) 1771 { 1772 memset(tf, 0, sizeof(*tf)); 1773 1774 #ifdef CONFIG_ATA_SFF 1775 tf->ctl = dev->link->ap->ctl; 1776 #else 1777 tf->ctl = ATA_DEVCTL_OBS; 1778 #endif 1779 if (dev->devno == 0) 1780 tf->device = ATA_DEVICE_OBS; 1781 else 1782 tf->device = ATA_DEVICE_OBS | ATA_DEV1; 1783 } 1784 1785 static inline void ata_qc_reinit(struct ata_queued_cmd *qc) 1786 { 1787 qc->dma_dir = DMA_NONE; 1788 qc->sg = NULL; 1789 qc->flags = 0; 1790 qc->cursg = NULL; 1791 qc->cursg_ofs = 0; 1792 qc->nbytes = qc->extrabytes = qc->curbytes = 0; 1793 qc->n_elem = 0; 1794 qc->err_mask = 0; 1795 qc->sect_size = ATA_SECT_SIZE; 1796 1797 ata_tf_init(qc->dev, &qc->tf); 1798 1799 /* init result_tf such that it indicates normal completion */ 1800 qc->result_tf.command = ATA_DRDY; 1801 qc->result_tf.feature = 0; 1802 } 1803 1804 static inline int ata_try_flush_cache(const struct ata_device *dev) 1805 { 1806 return ata_id_wcache_enabled(dev->id) || 1807 ata_id_has_flush(dev->id) || 1808 ata_id_has_flush_ext(dev->id); 1809 } 1810 1811 static inline unsigned int ac_err_mask(u8 status) 1812 { 1813 if (status & (ATA_BUSY | ATA_DRQ)) 1814 return AC_ERR_HSM; 1815 if (status & (ATA_ERR | ATA_DF)) 1816 return AC_ERR_DEV; 1817 return 0; 1818 } 1819 1820 static inline unsigned int __ac_err_mask(u8 status) 1821 { 1822 unsigned int mask = ac_err_mask(status); 1823 if (mask == 0) 1824 return AC_ERR_OTHER; 1825 return mask; 1826 } 1827 1828 static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) 1829 { 1830 return *(struct ata_port **)&host->hostdata[0]; 1831 } 1832 1833 static inline int ata_check_ready(u8 status) 1834 { 1835 if (!(status & ATA_BUSY)) 1836 return 1; 1837 1838 /* 0xff indicates either no device or device not ready */ 1839 if (status == 0xff) 1840 return -ENODEV; 1841 1842 return 0; 1843 } 1844 1845 static inline unsigned long ata_deadline(unsigned long from_jiffies, 1846 unsigned long timeout_msecs) 1847 { 1848 return from_jiffies + msecs_to_jiffies(timeout_msecs); 1849 } 1850 1851 /* Don't open code these in drivers as there are traps. Firstly the range may 1852 change in future hardware and specs, secondly 0xFF means 'no DMA' but is 1853 > UDMA_0. Dyma ddreigiau */ 1854 1855 static inline int ata_using_mwdma(struct ata_device *adev) 1856 { 1857 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4) 1858 return 1; 1859 return 0; 1860 } 1861 1862 static inline int ata_using_udma(struct ata_device *adev) 1863 { 1864 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7) 1865 return 1; 1866 return 0; 1867 } 1868 1869 static inline int ata_dma_enabled(struct ata_device *adev) 1870 { 1871 return (adev->dma_mode == 0xFF ? 0 : 1); 1872 } 1873 1874 /************************************************************************** 1875 * PATA timings - drivers/ata/libata-pata-timings.c 1876 */ 1877 extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); 1878 extern int ata_timing_compute(struct ata_device *, unsigned short, 1879 struct ata_timing *, int, int); 1880 extern void ata_timing_merge(const struct ata_timing *, 1881 const struct ata_timing *, struct ata_timing *, 1882 unsigned int); 1883 1884 /************************************************************************** 1885 * PMP - drivers/ata/libata-pmp.c 1886 */ 1887 #ifdef CONFIG_SATA_PMP 1888 1889 extern const struct ata_port_operations sata_pmp_port_ops; 1890 1891 extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); 1892 extern void sata_pmp_error_handler(struct ata_port *ap); 1893 1894 #else /* CONFIG_SATA_PMP */ 1895 1896 #define sata_pmp_port_ops sata_port_ops 1897 #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer 1898 #define sata_pmp_error_handler ata_std_error_handler 1899 1900 #endif /* CONFIG_SATA_PMP */ 1901 1902 1903 /************************************************************************** 1904 * SFF - drivers/ata/libata-sff.c 1905 */ 1906 #ifdef CONFIG_ATA_SFF 1907 1908 extern const struct ata_port_operations ata_sff_port_ops; 1909 extern const struct ata_port_operations ata_bmdma32_port_ops; 1910 1911 /* PIO only, sg_tablesize and dma_boundary limits can be removed */ 1912 #define ATA_PIO_SHT(drv_name) \ 1913 ATA_BASE_SHT(drv_name), \ 1914 .sg_tablesize = LIBATA_MAX_PRD, \ 1915 .dma_boundary = ATA_DMA_BOUNDARY 1916 1917 extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); 1918 extern u8 ata_sff_check_status(struct ata_port *ap); 1919 extern void ata_sff_pause(struct ata_port *ap); 1920 extern void ata_sff_dma_pause(struct ata_port *ap); 1921 extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline); 1922 extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); 1923 extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf); 1924 extern void ata_sff_exec_command(struct ata_port *ap, 1925 const struct ata_taskfile *tf); 1926 extern unsigned int ata_sff_data_xfer(struct ata_queued_cmd *qc, 1927 unsigned char *buf, unsigned int buflen, int rw); 1928 extern unsigned int ata_sff_data_xfer32(struct ata_queued_cmd *qc, 1929 unsigned char *buf, unsigned int buflen, int rw); 1930 extern void ata_sff_irq_on(struct ata_port *ap); 1931 extern void ata_sff_irq_clear(struct ata_port *ap); 1932 extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, 1933 u8 status, int in_wq); 1934 extern void ata_sff_queue_work(struct work_struct *work); 1935 extern void ata_sff_queue_delayed_work(struct delayed_work *dwork, 1936 unsigned long delay); 1937 extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay); 1938 extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); 1939 extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); 1940 extern unsigned int ata_sff_port_intr(struct ata_port *ap, 1941 struct ata_queued_cmd *qc); 1942 extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); 1943 extern void ata_sff_lost_interrupt(struct ata_port *ap); 1944 extern void ata_sff_freeze(struct ata_port *ap); 1945 extern void ata_sff_thaw(struct ata_port *ap); 1946 extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline); 1947 extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, 1948 u8 *r_err); 1949 extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask, 1950 unsigned long deadline); 1951 extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes, 1952 unsigned long deadline); 1953 extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class, 1954 unsigned long deadline); 1955 extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes); 1956 extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc); 1957 extern void ata_sff_error_handler(struct ata_port *ap); 1958 extern void ata_sff_std_ports(struct ata_ioports *ioaddr); 1959 #ifdef CONFIG_PCI 1960 extern int ata_pci_sff_init_host(struct ata_host *host); 1961 extern int ata_pci_sff_prepare_host(struct pci_dev *pdev, 1962 const struct ata_port_info * const * ppi, 1963 struct ata_host **r_host); 1964 extern int ata_pci_sff_activate_host(struct ata_host *host, 1965 irq_handler_t irq_handler, 1966 struct scsi_host_template *sht); 1967 extern int ata_pci_sff_init_one(struct pci_dev *pdev, 1968 const struct ata_port_info * const * ppi, 1969 struct scsi_host_template *sht, void *host_priv, int hflags); 1970 #endif /* CONFIG_PCI */ 1971 1972 #ifdef CONFIG_ATA_BMDMA 1973 1974 extern const struct ata_port_operations ata_bmdma_port_ops; 1975 1976 #define ATA_BMDMA_SHT(drv_name) \ 1977 ATA_BASE_SHT(drv_name), \ 1978 .sg_tablesize = LIBATA_MAX_PRD, \ 1979 .dma_boundary = ATA_DMA_BOUNDARY 1980 1981 extern enum ata_completion_errors ata_bmdma_qc_prep(struct ata_queued_cmd *qc); 1982 extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc); 1983 extern enum ata_completion_errors ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc); 1984 extern unsigned int ata_bmdma_port_intr(struct ata_port *ap, 1985 struct ata_queued_cmd *qc); 1986 extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance); 1987 extern void ata_bmdma_error_handler(struct ata_port *ap); 1988 extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc); 1989 extern void ata_bmdma_irq_clear(struct ata_port *ap); 1990 extern void ata_bmdma_setup(struct ata_queued_cmd *qc); 1991 extern void ata_bmdma_start(struct ata_queued_cmd *qc); 1992 extern void ata_bmdma_stop(struct ata_queued_cmd *qc); 1993 extern u8 ata_bmdma_status(struct ata_port *ap); 1994 extern int ata_bmdma_port_start(struct ata_port *ap); 1995 extern int ata_bmdma_port_start32(struct ata_port *ap); 1996 1997 #ifdef CONFIG_PCI 1998 extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); 1999 extern void ata_pci_bmdma_init(struct ata_host *host); 2000 extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev, 2001 const struct ata_port_info * const * ppi, 2002 struct ata_host **r_host); 2003 extern int ata_pci_bmdma_init_one(struct pci_dev *pdev, 2004 const struct ata_port_info * const * ppi, 2005 struct scsi_host_template *sht, 2006 void *host_priv, int hflags); 2007 #endif /* CONFIG_PCI */ 2008 #endif /* CONFIG_ATA_BMDMA */ 2009 2010 /** 2011 * ata_sff_busy_wait - Wait for a port status register 2012 * @ap: Port to wait for. 2013 * @bits: bits that must be clear 2014 * @max: number of 10uS waits to perform 2015 * 2016 * Waits up to max*10 microseconds for the selected bits in the port's 2017 * status register to be cleared. 2018 * Returns final value of status register. 2019 * 2020 * LOCKING: 2021 * Inherited from caller. 2022 */ 2023 static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits, 2024 unsigned int max) 2025 { 2026 u8 status; 2027 2028 do { 2029 udelay(10); 2030 status = ap->ops->sff_check_status(ap); 2031 max--; 2032 } while (status != 0xff && (status & bits) && (max > 0)); 2033 2034 return status; 2035 } 2036 2037 /** 2038 * ata_wait_idle - Wait for a port to be idle. 2039 * @ap: Port to wait for. 2040 * 2041 * Waits up to 10ms for port's BUSY and DRQ signals to clear. 2042 * Returns final value of status register. 2043 * 2044 * LOCKING: 2045 * Inherited from caller. 2046 */ 2047 static inline u8 ata_wait_idle(struct ata_port *ap) 2048 { 2049 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); 2050 2051 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) 2052 ata_port_dbg(ap, "abnormal Status 0x%X\n", status); 2053 2054 return status; 2055 } 2056 #endif /* CONFIG_ATA_SFF */ 2057 2058 #endif /* __LINUX_LIBATA_H__ */ 2059