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_FUA = (1 << 9), /* device supports FUA */ 94 ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */ 95 ATA_DFLAG_NCQ_SEND_RECV = (1 << 11), /* device supports NCQ SEND and RECV */ 96 ATA_DFLAG_NCQ_PRIO = (1 << 12), /* device supports NCQ priority */ 97 ATA_DFLAG_CDL = (1 << 13), /* supports cmd duration limits */ 98 ATA_DFLAG_CFG_MASK = (1 << 14) - 1, 99 100 ATA_DFLAG_PIO = (1 << 14), /* device limited to PIO mode */ 101 ATA_DFLAG_NCQ_OFF = (1 << 15), /* device limited to non-NCQ mode */ 102 ATA_DFLAG_SLEEPING = (1 << 16), /* device is sleeping */ 103 ATA_DFLAG_DUBIOUS_XFER = (1 << 17), /* data transfer not verified */ 104 ATA_DFLAG_NO_UNLOAD = (1 << 18), /* device doesn't support unload */ 105 ATA_DFLAG_UNLOCK_HPA = (1 << 19), /* unlock HPA */ 106 ATA_DFLAG_INIT_MASK = (1 << 20) - 1, 107 108 ATA_DFLAG_NCQ_PRIO_ENABLED = (1 << 20), /* Priority cmds sent to dev */ 109 ATA_DFLAG_CDL_ENABLED = (1 << 21), /* cmd duration limits is enabled */ 110 ATA_DFLAG_RESUMING = (1 << 22), /* Device is resuming */ 111 ATA_DFLAG_DETACH = (1 << 24), 112 ATA_DFLAG_DETACHED = (1 << 25), 113 ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */ 114 ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */ 115 ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */ 116 ATA_DFLAG_D_SENSE = (1 << 29), /* Descriptor sense requested */ 117 ATA_DFLAG_ZAC = (1 << 30), /* ZAC device */ 118 119 ATA_DFLAG_FEATURES_MASK = (ATA_DFLAG_TRUSTED | ATA_DFLAG_DA | \ 120 ATA_DFLAG_DEVSLP | ATA_DFLAG_NCQ_SEND_RECV | \ 121 ATA_DFLAG_NCQ_PRIO | ATA_DFLAG_FUA | \ 122 ATA_DFLAG_CDL), 123 124 ATA_DEV_UNKNOWN = 0, /* unknown device */ 125 ATA_DEV_ATA = 1, /* ATA device */ 126 ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ 127 ATA_DEV_ATAPI = 3, /* ATAPI device */ 128 ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ 129 ATA_DEV_PMP = 5, /* SATA port multiplier */ 130 ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ 131 ATA_DEV_SEMB = 7, /* SEMB */ 132 ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ 133 ATA_DEV_ZAC = 9, /* ZAC device */ 134 ATA_DEV_ZAC_UNSUP = 10, /* ZAC device (unsupported) */ 135 ATA_DEV_NONE = 11, /* no device */ 136 137 /* struct ata_link flags */ 138 /* NOTE: struct ata_force_param currently stores lflags in u16 */ 139 ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */ 140 ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ 141 ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ 142 ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ 143 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, 144 ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ 145 ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ 146 ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */ 147 ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */ 148 ATA_LFLAG_RST_ONCE = (1 << 9), /* limit recovery to one reset */ 149 ATA_LFLAG_CHANGED = (1 << 10), /* LPM state changed on this link */ 150 ATA_LFLAG_NO_DEBOUNCE_DELAY = (1 << 11), /* no debounce delay on link resume */ 151 152 /* struct ata_port flags */ 153 ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ 154 /* (doesn't imply presence) */ 155 ATA_FLAG_SATA = (1 << 1), 156 ATA_FLAG_NO_LPM = (1 << 2), /* host not happy with LPM */ 157 ATA_FLAG_NO_LOG_PAGE = (1 << 5), /* do not issue log page read */ 158 ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ 159 ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ 160 ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ 161 ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD 162 * doesn't handle PIO interrupts */ 163 ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ 164 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */ 165 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */ 166 ATA_FLAG_DEBUGMSG = (1 << 13), 167 ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */ 168 ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ 169 ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ 170 ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ 171 ATA_FLAG_AN = (1 << 18), /* controller supports AN */ 172 ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ 173 ATA_FLAG_FPDMA_AUX = (1 << 20), /* controller supports H2DFIS aux field */ 174 ATA_FLAG_EM = (1 << 21), /* driver supports enclosure 175 * management */ 176 ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity 177 * led */ 178 ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */ 179 ATA_FLAG_SAS_HOST = (1 << 24), /* SAS host */ 180 181 /* bits 24:31 of ap->flags are reserved for LLD specific flags */ 182 183 184 /* struct ata_port pflags */ 185 ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ 186 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ 187 ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ 188 ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ 189 ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ 190 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ 191 ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ 192 ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ 193 ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */ 194 ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */ 195 196 ATA_PFLAG_RESUMING = (1 << 16), /* port is being resumed */ 197 ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ 198 ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ 199 ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */ 200 201 ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */ 202 ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */ 203 ATA_PFLAG_EXTERNAL = (1 << 22), /* eSATA/external port */ 204 205 /* struct ata_queued_cmd flags */ 206 ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ 207 ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */ 208 ATA_QCFLAG_RTF_FILLED = (1 << 2), /* result TF has been filled */ 209 ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ 210 ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ 211 ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ 212 ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */ 213 ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */ 214 ATA_QCFLAG_HAS_CDL = (1 << 8), /* qc has CDL a descriptor set */ 215 216 ATA_QCFLAG_EH = (1 << 16), /* cmd aborted and owned by EH */ 217 ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ 218 ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ 219 ATA_QCFLAG_EH_SUCCESS_CMD = (1 << 19), /* EH should fetch sense for this successful cmd */ 220 221 /* host set flags */ 222 ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ 223 ATA_HOST_STARTED = (1 << 1), /* Host started */ 224 ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */ 225 ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */ 226 227 ATA_HOST_NO_PART = (1 << 4), /* Host does not support partial */ 228 ATA_HOST_NO_SSC = (1 << 5), /* Host does not support slumber */ 229 ATA_HOST_NO_DEVSLP = (1 << 6), /* Host does not support devslp */ 230 231 /* bits 24:31 of host->flags are reserved for LLD specific flags */ 232 233 /* various lengths of time */ 234 ATA_TMOUT_BOOT = 30000, /* heuristic */ 235 ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */ 236 ATA_TMOUT_INTERNAL_QUICK = 5000, 237 ATA_TMOUT_MAX_PARK = 30000, 238 239 /* 240 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s 241 * is too much without parallel probing. Use 2s if parallel 242 * probing is available, 800ms otherwise. 243 */ 244 ATA_TMOUT_FF_WAIT_LONG = 2000, 245 ATA_TMOUT_FF_WAIT = 800, 246 247 /* Spec mandates to wait for ">= 2ms" before checking status 248 * after reset. We wait 150ms, because that was the magic 249 * delay used for ATAPI devices in Hale Landis's ATADRVR, for 250 * the period of time between when the ATA command register is 251 * written, and then status is checked. Because waiting for 252 * "a while" before checking status is fine, post SRST, we 253 * perform this magic delay here as well. 254 * 255 * Old drivers/ide uses the 2mS rule and then waits for ready. 256 */ 257 ATA_WAIT_AFTER_RESET = 150, 258 259 /* If PMP is supported, we have to do follow-up SRST. As some 260 * PMPs don't send D2H Reg FIS after hardreset, LLDs are 261 * advised to wait only for the following duration before 262 * doing SRST. 263 */ 264 ATA_TMOUT_PMP_SRST_WAIT = 10000, 265 266 /* When the LPM policy is set to ATA_LPM_MAX_POWER, there might 267 * be a spurious PHY event, so ignore the first PHY event that 268 * occurs within 10s after the policy change. 269 */ 270 ATA_TMOUT_SPURIOUS_PHY = 10000, 271 272 /* ATA bus states */ 273 BUS_UNKNOWN = 0, 274 BUS_DMA = 1, 275 BUS_IDLE = 2, 276 BUS_NOINTR = 3, 277 BUS_NODATA = 4, 278 BUS_TIMER = 5, 279 BUS_PIO = 6, 280 BUS_EDD = 7, 281 BUS_IDENTIFY = 8, 282 BUS_PACKET = 9, 283 284 /* SATA port states */ 285 PORT_UNKNOWN = 0, 286 PORT_ENABLED = 1, 287 PORT_DISABLED = 2, 288 289 /* encoding various smaller bitmaps into a single 290 * unsigned int bitmap 291 */ 292 ATA_NR_PIO_MODES = 7, 293 ATA_NR_MWDMA_MODES = 5, 294 ATA_NR_UDMA_MODES = 8, 295 296 ATA_SHIFT_PIO = 0, 297 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES, 298 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES, 299 ATA_SHIFT_PRIO = 6, 300 301 ATA_PRIO_HIGH = 2, 302 /* size of buffer to pad xfers ending on unaligned boundaries */ 303 ATA_DMA_PAD_SZ = 4, 304 305 /* ering size */ 306 ATA_ERING_SIZE = 32, 307 308 /* return values for ->qc_defer */ 309 ATA_DEFER_LINK = 1, 310 ATA_DEFER_PORT = 2, 311 312 /* desc_len for ata_eh_info and context */ 313 ATA_EH_DESC_LEN = 80, 314 315 /* reset / recovery action types */ 316 ATA_EH_REVALIDATE = (1 << 0), 317 ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */ 318 ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */ 319 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, 320 ATA_EH_ENABLE_LINK = (1 << 3), 321 ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */ 322 ATA_EH_GET_SUCCESS_SENSE = (1 << 6), /* Get sense data for successful cmd */ 323 ATA_EH_SET_ACTIVE = (1 << 7), /* Set a device to active power mode */ 324 325 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK | 326 ATA_EH_GET_SUCCESS_SENSE | ATA_EH_SET_ACTIVE, 327 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET | 328 ATA_EH_ENABLE_LINK, 329 330 /* ata_eh_info->flags */ 331 ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ 332 ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ 333 ATA_EHI_QUIET = (1 << 3), /* be quiet */ 334 ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */ 335 336 ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ 337 ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ 338 ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ 339 ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ 340 ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */ 341 342 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, 343 344 /* mask of flags to transfer *to* the slave link */ 345 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, 346 347 /* max tries if error condition is still set after ->error_handler */ 348 ATA_EH_MAX_TRIES = 5, 349 350 /* sometimes resuming a link requires several retries */ 351 ATA_LINK_RESUME_TRIES = 5, 352 353 /* how hard are we gonna try to probe/recover devices */ 354 ATA_EH_DEV_TRIES = 3, 355 ATA_EH_PMP_TRIES = 5, 356 ATA_EH_PMP_LINK_TRIES = 3, 357 358 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */ 359 360 /* This should match the actual table size of 361 * ata_eh_cmd_timeout_table in libata-eh.c. 362 */ 363 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 8, 364 365 /* 366 * Quirk flags: may be set by libata or controller drivers on drives. 367 * Some quirks may be drive/controller pair dependent. 368 */ 369 ATA_QUIRK_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ 370 ATA_QUIRK_NODMA = (1 << 1), /* DMA problems */ 371 ATA_QUIRK_NONCQ = (1 << 2), /* Do not use NCQ */ 372 ATA_QUIRK_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ 373 ATA_QUIRK_BROKEN_HPA = (1 << 4), /* Broken HPA */ 374 ATA_QUIRK_DISABLE = (1 << 5), /* Disable it */ 375 ATA_QUIRK_HPA_SIZE = (1 << 6), /* Native size off by one */ 376 ATA_QUIRK_IVB = (1 << 8), /* CBL det validity bit bugs */ 377 ATA_QUIRK_STUCK_ERR = (1 << 9), /* Stuck ERR on next PACKET */ 378 ATA_QUIRK_BRIDGE_OK = (1 << 10), /* No bridge limits */ 379 ATA_QUIRK_ATAPI_MOD16_DMA = (1 << 11), /* Use ATAPI DMA for commands */ 380 /* not multiple of 16 bytes */ 381 ATA_QUIRK_FIRMWARE_WARN = (1 << 12), /* Firmware update warning */ 382 ATA_QUIRK_1_5_GBPS = (1 << 13), /* Force 1.5 Gbps */ 383 ATA_QUIRK_NOSETXFER = (1 << 14), /* Skip SETXFER, SATA only */ 384 ATA_QUIRK_BROKEN_FPDMA_AA = (1 << 15), /* Skip AA */ 385 ATA_QUIRK_DUMP_ID = (1 << 16), /* Dump IDENTIFY data */ 386 ATA_QUIRK_MAX_SEC_LBA48 = (1 << 17), /* Set max sects to 65535 */ 387 ATA_QUIRK_ATAPI_DMADIR = (1 << 18), /* Device requires dmadir */ 388 ATA_QUIRK_NO_NCQ_TRIM = (1 << 19), /* Do not use queued TRIM */ 389 ATA_QUIRK_NOLPM = (1 << 20), /* Do not use LPM */ 390 ATA_QUIRK_WD_BROKEN_LPM = (1 << 21), /* Some WDs have broken LPM */ 391 ATA_QUIRK_ZERO_AFTER_TRIM = (1 << 22), /* Guarantees zero after trim */ 392 ATA_QUIRK_NO_DMA_LOG = (1 << 23), /* Do not use DMA for log read */ 393 ATA_QUIRK_NOTRIM = (1 << 24), /* Do not use TRIM */ 394 ATA_QUIRK_MAX_SEC_1024 = (1 << 25), /* Limit max sects to 1024 */ 395 ATA_QUIRK_MAX_TRIM_128M = (1 << 26), /* Limit max trim size to 128M */ 396 ATA_QUIRK_NO_NCQ_ON_ATI = (1 << 27), /* Disable NCQ on ATI chipset */ 397 ATA_QUIRK_NO_ID_DEV_LOG = (1 << 28), /* Identify device log missing */ 398 ATA_QUIRK_NO_LOG_DIR = (1 << 29), /* Do not read log directory */ 399 ATA_QUIRK_NO_FUA = (1 << 30), /* Do not use FUA */ 400 401 /* DMA mask for user DMA control: User visible values; DO NOT 402 renumber */ 403 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ 404 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ 405 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ 406 407 /* ATAPI command types */ 408 ATAPI_READ = 0, /* READs */ 409 ATAPI_WRITE = 1, /* WRITEs */ 410 ATAPI_READ_CD = 2, /* READ CD [MSF] */ 411 ATAPI_PASS_THRU = 3, /* SAT pass-thru */ 412 ATAPI_MISC = 4, /* the rest */ 413 414 /* Timing constants */ 415 ATA_TIMING_SETUP = (1 << 0), 416 ATA_TIMING_ACT8B = (1 << 1), 417 ATA_TIMING_REC8B = (1 << 2), 418 ATA_TIMING_CYC8B = (1 << 3), 419 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | 420 ATA_TIMING_CYC8B, 421 ATA_TIMING_ACTIVE = (1 << 4), 422 ATA_TIMING_RECOVER = (1 << 5), 423 ATA_TIMING_DMACK_HOLD = (1 << 6), 424 ATA_TIMING_CYCLE = (1 << 7), 425 ATA_TIMING_UDMA = (1 << 8), 426 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | 427 ATA_TIMING_REC8B | ATA_TIMING_CYC8B | 428 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | 429 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE | 430 ATA_TIMING_UDMA, 431 432 /* ACPI constants */ 433 ATA_ACPI_FILTER_SETXFER = 1 << 0, 434 ATA_ACPI_FILTER_LOCK = 1 << 1, 435 ATA_ACPI_FILTER_DIPM = 1 << 2, 436 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */ 437 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */ 438 439 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER | 440 ATA_ACPI_FILTER_LOCK | 441 ATA_ACPI_FILTER_DIPM, 442 }; 443 444 enum ata_xfer_mask { 445 ATA_MASK_PIO = ((1U << ATA_NR_PIO_MODES) - 1) << ATA_SHIFT_PIO, 446 ATA_MASK_MWDMA = ((1U << ATA_NR_MWDMA_MODES) - 1) << ATA_SHIFT_MWDMA, 447 ATA_MASK_UDMA = ((1U << ATA_NR_UDMA_MODES) - 1) << ATA_SHIFT_UDMA, 448 }; 449 450 enum hsm_task_states { 451 HSM_ST_IDLE, /* no command on going */ 452 HSM_ST_FIRST, /* (waiting the device to) 453 write CDB or first data block */ 454 HSM_ST, /* (waiting the device to) transfer data */ 455 HSM_ST_LAST, /* (waiting the device to) complete command */ 456 HSM_ST_ERR, /* error */ 457 }; 458 459 enum ata_completion_errors { 460 AC_ERR_OK = 0, /* no error */ 461 AC_ERR_DEV = (1 << 0), /* device reported error */ 462 AC_ERR_HSM = (1 << 1), /* host state machine violation */ 463 AC_ERR_TIMEOUT = (1 << 2), /* timeout */ 464 AC_ERR_MEDIA = (1 << 3), /* media error */ 465 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ 466 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ 467 AC_ERR_SYSTEM = (1 << 6), /* system error */ 468 AC_ERR_INVALID = (1 << 7), /* invalid argument */ 469 AC_ERR_OTHER = (1 << 8), /* unknown */ 470 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ 471 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ 472 }; 473 474 /* 475 * Link power management policy: If you alter this, you also need to 476 * alter libata-sata.c (for the ascii descriptions) 477 */ 478 enum ata_lpm_policy { 479 ATA_LPM_UNKNOWN, 480 ATA_LPM_MAX_POWER, 481 ATA_LPM_MED_POWER, 482 ATA_LPM_MED_POWER_WITH_DIPM, /* Med power + DIPM as win IRST does */ 483 ATA_LPM_MIN_POWER_WITH_PARTIAL, /* Min Power + partial and slumber */ 484 ATA_LPM_MIN_POWER, /* Min power + no partial (slumber only) */ 485 }; 486 487 enum ata_lpm_hints { 488 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */ 489 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */ 490 ATA_LPM_WAKE_ONLY = (1 << 2), /* only wake up link */ 491 }; 492 493 /* forward declarations */ 494 struct scsi_device; 495 struct ata_port_operations; 496 struct ata_port; 497 struct ata_link; 498 struct ata_queued_cmd; 499 500 /* typedefs */ 501 typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); 502 typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); 503 typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, 504 unsigned long deadline); 505 typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); 506 507 extern struct device_attribute dev_attr_unload_heads; 508 #ifdef CONFIG_SATA_HOST 509 extern struct device_attribute dev_attr_link_power_management_policy; 510 extern struct device_attribute dev_attr_ncq_prio_supported; 511 extern struct device_attribute dev_attr_ncq_prio_enable; 512 extern struct device_attribute dev_attr_em_message_type; 513 extern struct device_attribute dev_attr_em_message; 514 extern struct device_attribute dev_attr_sw_activity; 515 #endif 516 517 enum sw_activity { 518 OFF, 519 BLINK_ON, 520 BLINK_OFF, 521 }; 522 523 struct ata_taskfile { 524 unsigned long flags; /* ATA_TFLAG_xxx */ 525 u8 protocol; /* ATA_PROT_xxx */ 526 527 u8 ctl; /* control reg */ 528 529 u8 hob_feature; /* additional data */ 530 u8 hob_nsect; /* to support LBA48 */ 531 u8 hob_lbal; 532 u8 hob_lbam; 533 u8 hob_lbah; 534 535 union { 536 u8 error; 537 u8 feature; 538 }; 539 u8 nsect; 540 u8 lbal; 541 u8 lbam; 542 u8 lbah; 543 544 u8 device; 545 546 union { 547 u8 status; 548 u8 command; 549 }; 550 551 u32 auxiliary; /* auxiliary field */ 552 /* from SATA 3.1 and */ 553 /* ATA-8 ACS-3 */ 554 }; 555 556 #ifdef CONFIG_ATA_SFF 557 struct ata_ioports { 558 void __iomem *cmd_addr; 559 void __iomem *data_addr; 560 void __iomem *error_addr; 561 void __iomem *feature_addr; 562 void __iomem *nsect_addr; 563 void __iomem *lbal_addr; 564 void __iomem *lbam_addr; 565 void __iomem *lbah_addr; 566 void __iomem *device_addr; 567 void __iomem *status_addr; 568 void __iomem *command_addr; 569 void __iomem *altstatus_addr; 570 void __iomem *ctl_addr; 571 #ifdef CONFIG_ATA_BMDMA 572 void __iomem *bmdma_addr; 573 #endif /* CONFIG_ATA_BMDMA */ 574 void __iomem *scr_addr; 575 }; 576 #endif /* CONFIG_ATA_SFF */ 577 578 struct ata_host { 579 spinlock_t lock; 580 struct device *dev; 581 void __iomem * const *iomap; 582 unsigned int n_ports; 583 unsigned int n_tags; /* nr of NCQ tags */ 584 void *private_data; 585 struct ata_port_operations *ops; 586 unsigned long flags; 587 struct kref kref; 588 589 struct mutex eh_mutex; 590 struct task_struct *eh_owner; 591 592 struct ata_port *simplex_claimed; /* channel owning the DMA */ 593 struct ata_port *ports[]; 594 }; 595 596 struct ata_queued_cmd { 597 struct ata_port *ap; 598 struct ata_device *dev; 599 600 struct scsi_cmnd *scsicmd; 601 void (*scsidone)(struct scsi_cmnd *); 602 603 struct ata_taskfile tf; 604 u8 cdb[ATAPI_CDB_LEN]; 605 606 unsigned long flags; /* ATA_QCFLAG_xxx */ 607 unsigned int tag; /* libata core tag */ 608 unsigned int hw_tag; /* driver tag */ 609 unsigned int n_elem; 610 unsigned int orig_n_elem; 611 612 int dma_dir; 613 614 unsigned int sect_size; 615 616 unsigned int nbytes; 617 unsigned int extrabytes; 618 unsigned int curbytes; 619 620 struct scatterlist sgent; 621 622 struct scatterlist *sg; 623 624 struct scatterlist *cursg; 625 unsigned int cursg_ofs; 626 627 unsigned int err_mask; 628 struct ata_taskfile result_tf; 629 ata_qc_cb_t complete_fn; 630 631 void *private_data; 632 void *lldd_task; 633 }; 634 635 struct ata_port_stats { 636 unsigned long unhandled_irq; 637 unsigned long idle_irq; 638 unsigned long rw_reqbuf; 639 }; 640 641 struct ata_ering_entry { 642 unsigned int eflags; 643 unsigned int err_mask; 644 u64 timestamp; 645 }; 646 647 struct ata_ering { 648 int cursor; 649 struct ata_ering_entry ring[ATA_ERING_SIZE]; 650 }; 651 652 struct ata_cpr { 653 u8 num; 654 u8 num_storage_elements; 655 u64 start_lba; 656 u64 num_lbas; 657 }; 658 659 struct ata_cpr_log { 660 u8 nr_cpr; 661 struct ata_cpr cpr[] __counted_by(nr_cpr); 662 }; 663 664 struct ata_device { 665 struct ata_link *link; 666 unsigned int devno; /* 0 or 1 */ 667 unsigned int quirks; /* List of broken features */ 668 unsigned long flags; /* ATA_DFLAG_xxx */ 669 struct scsi_device *sdev; /* attached SCSI device */ 670 void *private_data; 671 #ifdef CONFIG_ATA_ACPI 672 union acpi_object *gtf_cache; 673 unsigned int gtf_filter; 674 #endif 675 #ifdef CONFIG_SATA_ZPODD 676 void *zpodd; 677 #endif 678 struct device tdev; 679 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */ 680 u64 n_sectors; /* size of device, if ATA */ 681 u64 n_native_sectors; /* native size, if ATA */ 682 unsigned int class; /* ATA_DEV_xxx */ 683 unsigned long unpark_deadline; 684 685 u8 pio_mode; 686 u8 dma_mode; 687 u8 xfer_mode; 688 unsigned int xfer_shift; /* ATA_SHIFT_xxx */ 689 690 unsigned int multi_count; /* sectors count for 691 READ/WRITE MULTIPLE */ 692 unsigned int max_sectors; /* per-device max sectors */ 693 unsigned int cdb_len; 694 695 /* per-dev xfer mask */ 696 unsigned int pio_mask; 697 unsigned int mwdma_mask; 698 unsigned int udma_mask; 699 700 /* for CHS addressing */ 701 u16 cylinders; /* Number of cylinders */ 702 u16 heads; /* Number of heads */ 703 u16 sectors; /* Number of sectors per track */ 704 705 union { 706 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ 707 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ 708 } ____cacheline_aligned; 709 710 /* DEVSLP Timing Variables from Identify Device Data Log */ 711 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE]; 712 713 /* NCQ send and receive log subcommand support */ 714 u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE]; 715 u8 ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_SIZE]; 716 717 /* ZAC zone configuration */ 718 u32 zac_zoned_cap; 719 u32 zac_zones_optimal_open; 720 u32 zac_zones_optimal_nonseq; 721 u32 zac_zones_max_open; 722 723 /* Concurrent positioning ranges */ 724 struct ata_cpr_log *cpr_log; 725 726 /* Command Duration Limits log support */ 727 u8 cdl[ATA_LOG_CDL_SIZE]; 728 729 /* error history */ 730 int spdn_cnt; 731 /* ering is CLEAR_END, read comment above CLEAR_END */ 732 struct ata_ering ering; 733 }; 734 735 /* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are 736 * cleared to zero on ata_dev_init(). 737 */ 738 #define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors) 739 #define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering) 740 741 struct ata_eh_info { 742 struct ata_device *dev; /* offending device */ 743 u32 serror; /* SError from LLDD */ 744 unsigned int err_mask; /* port-wide err_mask */ 745 unsigned int action; /* ATA_EH_* action mask */ 746 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ 747 unsigned int flags; /* ATA_EHI_* flags */ 748 749 unsigned int probe_mask; 750 751 char desc[ATA_EH_DESC_LEN]; 752 int desc_len; 753 }; 754 755 struct ata_eh_context { 756 struct ata_eh_info i; 757 int tries[ATA_MAX_DEVICES]; 758 int cmd_timeout_idx[ATA_MAX_DEVICES] 759 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE]; 760 unsigned int classes[ATA_MAX_DEVICES]; 761 unsigned int did_probe_mask; 762 unsigned int unloaded_mask; 763 unsigned int saved_ncq_enabled; 764 u8 saved_xfer_mode[ATA_MAX_DEVICES]; 765 /* timestamp for the last reset attempt or success */ 766 unsigned long last_reset; 767 }; 768 769 struct ata_acpi_drive 770 { 771 u32 pio; 772 u32 dma; 773 } __packed; 774 775 struct ata_acpi_gtm { 776 struct ata_acpi_drive drive[2]; 777 u32 flags; 778 } __packed; 779 780 struct ata_link { 781 struct ata_port *ap; 782 int pmp; /* port multiplier port # */ 783 784 struct device tdev; 785 unsigned int active_tag; /* active tag on this link */ 786 u32 sactive; /* active NCQ commands */ 787 788 unsigned int flags; /* ATA_LFLAG_xxx */ 789 790 u32 saved_scontrol; /* SControl on probe */ 791 unsigned int hw_sata_spd_limit; 792 unsigned int sata_spd_limit; 793 unsigned int sata_spd; /* current SATA PHY speed */ 794 enum ata_lpm_policy lpm_policy; 795 796 /* record runtime error info, protected by host_set lock */ 797 struct ata_eh_info eh_info; 798 /* EH context */ 799 struct ata_eh_context eh_context; 800 801 struct ata_device device[ATA_MAX_DEVICES]; 802 803 unsigned long last_lpm_change; /* when last LPM change happened */ 804 }; 805 #define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag) 806 #define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0]) 807 808 struct ata_port { 809 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ 810 struct ata_port_operations *ops; 811 spinlock_t *lock; 812 /* Flags owned by the EH context. Only EH should touch these once the 813 port is active */ 814 unsigned long flags; /* ATA_FLAG_xxx */ 815 /* Flags that change dynamically, protected by ap->lock */ 816 unsigned int pflags; /* ATA_PFLAG_xxx */ 817 unsigned int print_id; /* user visible unique port ID */ 818 unsigned int port_no; /* 0 based port no. inside the host */ 819 820 #ifdef CONFIG_ATA_SFF 821 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ 822 u8 ctl; /* cache of ATA control register */ 823 u8 last_ctl; /* Cache last written value */ 824 struct ata_link* sff_pio_task_link; /* link currently used */ 825 struct delayed_work sff_pio_task; 826 #ifdef CONFIG_ATA_BMDMA 827 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */ 828 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */ 829 #endif /* CONFIG_ATA_BMDMA */ 830 #endif /* CONFIG_ATA_SFF */ 831 832 unsigned int pio_mask; 833 unsigned int mwdma_mask; 834 unsigned int udma_mask; 835 unsigned int cbl; /* cable type; ATA_CBL_xxx */ 836 837 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE + 1]; 838 u64 qc_active; 839 int nr_active_links; /* #links with active qcs */ 840 841 struct ata_link link; /* host default link */ 842 struct ata_link *slave_link; /* see ata_slave_link_init() */ 843 844 int nr_pmp_links; /* nr of available PMP links */ 845 struct ata_link *pmp_link; /* array of PMP links */ 846 struct ata_link *excl_link; /* for PMP qc exclusion */ 847 848 struct ata_port_stats stats; 849 struct ata_host *host; 850 struct device *dev; 851 struct device tdev; 852 853 struct mutex scsi_scan_mutex; 854 struct delayed_work hotplug_task; 855 struct delayed_work scsi_rescan_task; 856 857 unsigned int hsm_task_state; 858 859 struct list_head eh_done_q; 860 wait_queue_head_t eh_wait_q; 861 int eh_tries; 862 struct completion park_req_pending; 863 864 pm_message_t pm_mesg; 865 enum ata_lpm_policy target_lpm_policy; 866 867 struct timer_list fastdrain_timer; 868 unsigned int fastdrain_cnt; 869 870 async_cookie_t cookie; 871 872 int em_message_type; 873 void *private_data; 874 875 #ifdef CONFIG_ATA_ACPI 876 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */ 877 #endif 878 /* owned by EH */ 879 u8 *ncq_sense_buf; 880 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned; 881 }; 882 883 /* The following initializer overrides a method to NULL whether one of 884 * its parent has the method defined or not. This is equivalent to 885 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant 886 * expression and thus can't be used as an initializer. 887 */ 888 #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT) 889 890 struct ata_port_operations { 891 /* 892 * Command execution 893 */ 894 int (*qc_defer)(struct ata_queued_cmd *qc); 895 int (*check_atapi_dma)(struct ata_queued_cmd *qc); 896 enum ata_completion_errors (*qc_prep)(struct ata_queued_cmd *qc); 897 unsigned int (*qc_issue)(struct ata_queued_cmd *qc); 898 void (*qc_fill_rtf)(struct ata_queued_cmd *qc); 899 void (*qc_ncq_fill_rtf)(struct ata_port *ap, u64 done_mask); 900 901 /* 902 * Configuration and exception handling 903 */ 904 int (*cable_detect)(struct ata_port *ap); 905 unsigned int (*mode_filter)(struct ata_device *dev, unsigned int xfer_mask); 906 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev); 907 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev); 908 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev); 909 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, 910 __le16 *id); 911 912 void (*dev_config)(struct ata_device *dev); 913 914 void (*freeze)(struct ata_port *ap); 915 void (*thaw)(struct ata_port *ap); 916 ata_prereset_fn_t prereset; 917 ata_reset_fn_t softreset; 918 ata_reset_fn_t hardreset; 919 ata_postreset_fn_t postreset; 920 ata_prereset_fn_t pmp_prereset; 921 ata_reset_fn_t pmp_softreset; 922 ata_reset_fn_t pmp_hardreset; 923 ata_postreset_fn_t pmp_postreset; 924 void (*error_handler)(struct ata_port *ap); 925 void (*lost_interrupt)(struct ata_port *ap); 926 void (*post_internal_cmd)(struct ata_queued_cmd *qc); 927 void (*sched_eh)(struct ata_port *ap); 928 void (*end_eh)(struct ata_port *ap); 929 930 /* 931 * Optional features 932 */ 933 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val); 934 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val); 935 void (*pmp_attach)(struct ata_port *ap); 936 void (*pmp_detach)(struct ata_port *ap); 937 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy, 938 unsigned hints); 939 940 /* 941 * Start, stop, suspend and resume 942 */ 943 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg); 944 int (*port_resume)(struct ata_port *ap); 945 int (*port_start)(struct ata_port *ap); 946 void (*port_stop)(struct ata_port *ap); 947 void (*host_stop)(struct ata_host *host); 948 949 #ifdef CONFIG_ATA_SFF 950 /* 951 * SFF / taskfile oriented ops 952 */ 953 void (*sff_dev_select)(struct ata_port *ap, unsigned int device); 954 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl); 955 u8 (*sff_check_status)(struct ata_port *ap); 956 u8 (*sff_check_altstatus)(struct ata_port *ap); 957 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf); 958 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf); 959 void (*sff_exec_command)(struct ata_port *ap, 960 const struct ata_taskfile *tf); 961 unsigned int (*sff_data_xfer)(struct ata_queued_cmd *qc, 962 unsigned char *buf, unsigned int buflen, int rw); 963 void (*sff_irq_on)(struct ata_port *); 964 bool (*sff_irq_check)(struct ata_port *); 965 void (*sff_irq_clear)(struct ata_port *); 966 void (*sff_drain_fifo)(struct ata_queued_cmd *qc); 967 968 #ifdef CONFIG_ATA_BMDMA 969 void (*bmdma_setup)(struct ata_queued_cmd *qc); 970 void (*bmdma_start)(struct ata_queued_cmd *qc); 971 void (*bmdma_stop)(struct ata_queued_cmd *qc); 972 u8 (*bmdma_status)(struct ata_port *ap); 973 #endif /* CONFIG_ATA_BMDMA */ 974 #endif /* CONFIG_ATA_SFF */ 975 976 ssize_t (*em_show)(struct ata_port *ap, char *buf); 977 ssize_t (*em_store)(struct ata_port *ap, const char *message, 978 size_t size); 979 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf); 980 ssize_t (*sw_activity_store)(struct ata_device *dev, 981 enum sw_activity val); 982 ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state, 983 ssize_t size); 984 985 /* 986 * ->inherits must be the last field and all the preceding 987 * fields must be pointers. 988 */ 989 const struct ata_port_operations *inherits; 990 }; 991 992 struct ata_port_info { 993 unsigned long flags; 994 unsigned long link_flags; 995 unsigned int pio_mask; 996 unsigned int mwdma_mask; 997 unsigned int udma_mask; 998 struct ata_port_operations *port_ops; 999 void *private_data; 1000 }; 1001 1002 struct ata_timing { 1003 unsigned short mode; /* ATA mode */ 1004 unsigned short setup; /* t1 */ 1005 unsigned short act8b; /* t2 for 8-bit I/O */ 1006 unsigned short rec8b; /* t2i for 8-bit I/O */ 1007 unsigned short cyc8b; /* t0 for 8-bit I/O */ 1008 unsigned short active; /* t2 or tD */ 1009 unsigned short recover; /* t2i or tK */ 1010 unsigned short dmack_hold; /* tj */ 1011 unsigned short cycle; /* t0 */ 1012 unsigned short udma; /* t2CYCTYP/2 */ 1013 }; 1014 1015 /* 1016 * Core layer - drivers/ata/libata-core.c 1017 */ 1018 extern struct ata_port_operations ata_dummy_port_ops; 1019 extern const struct ata_port_info ata_dummy_port_info; 1020 1021 static inline bool ata_is_atapi(u8 prot) 1022 { 1023 return prot & ATA_PROT_FLAG_ATAPI; 1024 } 1025 1026 static inline bool ata_is_pio(u8 prot) 1027 { 1028 return prot & ATA_PROT_FLAG_PIO; 1029 } 1030 1031 static inline bool ata_is_dma(u8 prot) 1032 { 1033 return prot & ATA_PROT_FLAG_DMA; 1034 } 1035 1036 static inline bool ata_is_ncq(u8 prot) 1037 { 1038 return prot & ATA_PROT_FLAG_NCQ; 1039 } 1040 1041 static inline bool ata_is_data(u8 prot) 1042 { 1043 return prot & (ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA); 1044 } 1045 1046 static inline int is_multi_taskfile(struct ata_taskfile *tf) 1047 { 1048 return (tf->command == ATA_CMD_READ_MULTI) || 1049 (tf->command == ATA_CMD_WRITE_MULTI) || 1050 (tf->command == ATA_CMD_READ_MULTI_EXT) || 1051 (tf->command == ATA_CMD_WRITE_MULTI_EXT) || 1052 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); 1053 } 1054 1055 static inline int ata_port_is_dummy(struct ata_port *ap) 1056 { 1057 return ap->ops == &ata_dummy_port_ops; 1058 } 1059 1060 static inline bool ata_port_is_frozen(const struct ata_port *ap) 1061 { 1062 return ap->pflags & ATA_PFLAG_FROZEN; 1063 } 1064 1065 extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); 1066 extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, 1067 int (*check_ready)(struct ata_link *link)); 1068 extern int sata_std_hardreset(struct ata_link *link, unsigned int *class, 1069 unsigned long deadline); 1070 extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); 1071 1072 extern struct ata_host *ata_host_alloc(struct device *dev, int n_ports); 1073 extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, 1074 const struct ata_port_info * const * ppi, int n_ports); 1075 extern void ata_host_get(struct ata_host *host); 1076 extern void ata_host_put(struct ata_host *host); 1077 extern int ata_host_start(struct ata_host *host); 1078 extern int ata_host_register(struct ata_host *host, 1079 const struct scsi_host_template *sht); 1080 extern int ata_host_activate(struct ata_host *host, int irq, 1081 irq_handler_t irq_handler, unsigned long irq_flags, 1082 const struct scsi_host_template *sht); 1083 extern void ata_host_detach(struct ata_host *host); 1084 extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *); 1085 extern int ata_scsi_ioctl(struct scsi_device *dev, unsigned int cmd, 1086 void __user *arg); 1087 #ifdef CONFIG_COMPAT 1088 #define ATA_SCSI_COMPAT_IOCTL .compat_ioctl = ata_scsi_ioctl, 1089 #else 1090 #define ATA_SCSI_COMPAT_IOCTL /* empty */ 1091 #endif 1092 extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd); 1093 #if IS_REACHABLE(CONFIG_ATA) 1094 bool ata_scsi_dma_need_drain(struct request *rq); 1095 #else 1096 #define ata_scsi_dma_need_drain NULL 1097 #endif 1098 extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev, 1099 unsigned int cmd, void __user *arg); 1100 extern bool ata_link_online(struct ata_link *link); 1101 extern bool ata_link_offline(struct ata_link *link); 1102 #ifdef CONFIG_PM 1103 extern void ata_host_suspend(struct ata_host *host, pm_message_t mesg); 1104 extern void ata_host_resume(struct ata_host *host); 1105 extern void ata_sas_port_suspend(struct ata_port *ap); 1106 extern void ata_sas_port_resume(struct ata_port *ap); 1107 #else 1108 static inline void ata_sas_port_suspend(struct ata_port *ap) 1109 { 1110 } 1111 static inline void ata_sas_port_resume(struct ata_port *ap) 1112 { 1113 } 1114 #endif 1115 extern int ata_ratelimit(void); 1116 extern void ata_msleep(struct ata_port *ap, unsigned int msecs); 1117 extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask, 1118 u32 val, unsigned int interval, unsigned int timeout); 1119 extern int atapi_cmd_type(u8 opcode); 1120 extern unsigned int ata_pack_xfermask(unsigned int pio_mask, 1121 unsigned int mwdma_mask, 1122 unsigned int udma_mask); 1123 extern void ata_unpack_xfermask(unsigned int xfer_mask, 1124 unsigned int *pio_mask, 1125 unsigned int *mwdma_mask, 1126 unsigned int *udma_mask); 1127 extern u8 ata_xfer_mask2mode(unsigned int xfer_mask); 1128 extern unsigned int ata_xfer_mode2mask(u8 xfer_mode); 1129 extern int ata_xfer_mode2shift(u8 xfer_mode); 1130 extern const char *ata_mode_string(unsigned int xfer_mask); 1131 extern unsigned int ata_id_xfermask(const u16 *id); 1132 extern int ata_std_qc_defer(struct ata_queued_cmd *qc); 1133 extern enum ata_completion_errors ata_noop_qc_prep(struct ata_queued_cmd *qc); 1134 extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, 1135 unsigned int n_elem); 1136 extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); 1137 extern unsigned int ata_port_classify(struct ata_port *ap, 1138 const struct ata_taskfile *tf); 1139 extern void ata_dev_disable(struct ata_device *adev); 1140 extern void ata_id_string(const u16 *id, unsigned char *s, 1141 unsigned int ofs, unsigned int len); 1142 extern void ata_id_c_string(const u16 *id, unsigned char *s, 1143 unsigned int ofs, unsigned int len); 1144 extern unsigned int ata_do_dev_read_id(struct ata_device *dev, 1145 struct ata_taskfile *tf, __le16 *id); 1146 extern void ata_qc_complete(struct ata_queued_cmd *qc); 1147 extern u64 ata_qc_get_active(struct ata_port *ap); 1148 extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd); 1149 extern int ata_std_bios_param(struct scsi_device *sdev, 1150 struct block_device *bdev, 1151 sector_t capacity, int geom[]); 1152 extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev); 1153 extern int ata_scsi_slave_alloc(struct scsi_device *sdev); 1154 int ata_scsi_device_configure(struct scsi_device *sdev, 1155 struct queue_limits *lim); 1156 extern void ata_scsi_slave_destroy(struct scsi_device *sdev); 1157 extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, 1158 int queue_depth); 1159 extern int ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, 1160 int queue_depth); 1161 extern int ata_ncq_prio_supported(struct ata_port *ap, struct scsi_device *sdev, 1162 bool *supported); 1163 extern int ata_ncq_prio_enabled(struct ata_port *ap, struct scsi_device *sdev, 1164 bool *enabled); 1165 extern int ata_ncq_prio_enable(struct ata_port *ap, struct scsi_device *sdev, 1166 bool enable); 1167 extern struct ata_device *ata_dev_pair(struct ata_device *adev); 1168 extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); 1169 extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap); 1170 extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q); 1171 1172 /* 1173 * SATA specific code - drivers/ata/libata-sata.c 1174 */ 1175 #ifdef CONFIG_SATA_HOST 1176 extern const unsigned int sata_deb_timing_normal[]; 1177 extern const unsigned int sata_deb_timing_hotplug[]; 1178 extern const unsigned int sata_deb_timing_long[]; 1179 1180 static inline const unsigned int * 1181 sata_ehc_deb_timing(struct ata_eh_context *ehc) 1182 { 1183 if (ehc->i.flags & ATA_EHI_HOTPLUGGED) 1184 return sata_deb_timing_hotplug; 1185 else 1186 return sata_deb_timing_normal; 1187 } 1188 1189 extern int sata_scr_valid(struct ata_link *link); 1190 extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); 1191 extern int sata_scr_write(struct ata_link *link, int reg, u32 val); 1192 extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); 1193 extern int sata_set_spd(struct ata_link *link); 1194 extern int sata_link_hardreset(struct ata_link *link, 1195 const unsigned int *timing, unsigned long deadline, 1196 bool *online, int (*check_ready)(struct ata_link *)); 1197 extern int sata_link_resume(struct ata_link *link, const unsigned int *params, 1198 unsigned long deadline); 1199 extern int ata_eh_read_sense_success_ncq_log(struct ata_link *link); 1200 extern void ata_eh_analyze_ncq_error(struct ata_link *link); 1201 #else 1202 static inline const unsigned int * 1203 sata_ehc_deb_timing(struct ata_eh_context *ehc) 1204 { 1205 return NULL; 1206 } 1207 static inline int sata_scr_valid(struct ata_link *link) { return 0; } 1208 static inline int sata_scr_read(struct ata_link *link, int reg, u32 *val) 1209 { 1210 return -EOPNOTSUPP; 1211 } 1212 static inline int sata_scr_write(struct ata_link *link, int reg, u32 val) 1213 { 1214 return -EOPNOTSUPP; 1215 } 1216 static inline int sata_scr_write_flush(struct ata_link *link, int reg, u32 val) 1217 { 1218 return -EOPNOTSUPP; 1219 } 1220 static inline int sata_set_spd(struct ata_link *link) { return -EOPNOTSUPP; } 1221 static inline int sata_link_hardreset(struct ata_link *link, 1222 const unsigned int *timing, 1223 unsigned long deadline, 1224 bool *online, 1225 int (*check_ready)(struct ata_link *)) 1226 { 1227 if (online) 1228 *online = false; 1229 return -EOPNOTSUPP; 1230 } 1231 static inline int sata_link_resume(struct ata_link *link, 1232 const unsigned int *params, 1233 unsigned long deadline) 1234 { 1235 return -EOPNOTSUPP; 1236 } 1237 static inline int ata_eh_read_sense_success_ncq_log(struct ata_link *link) 1238 { 1239 return -EOPNOTSUPP; 1240 } 1241 static inline void ata_eh_analyze_ncq_error(struct ata_link *link) { } 1242 #endif 1243 extern int sata_link_debounce(struct ata_link *link, 1244 const unsigned int *params, unsigned long deadline); 1245 extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy, 1246 bool spm_wakeup); 1247 extern int ata_slave_link_init(struct ata_port *ap); 1248 extern void ata_port_probe(struct ata_port *ap); 1249 extern struct ata_port *ata_port_alloc(struct ata_host *host); 1250 extern void ata_port_free(struct ata_port *ap); 1251 extern int ata_tport_add(struct device *parent, struct ata_port *ap); 1252 extern void ata_tport_delete(struct ata_port *ap); 1253 int ata_sas_device_configure(struct scsi_device *sdev, struct queue_limits *lim, 1254 struct ata_port *ap); 1255 extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap); 1256 extern void ata_tf_to_fis(const struct ata_taskfile *tf, 1257 u8 pmp, int is_cmd, u8 *fis); 1258 extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); 1259 extern int ata_qc_complete_multiple(struct ata_port *ap, u64 qc_active); 1260 extern bool sata_lpm_ignore_phy_events(struct ata_link *link); 1261 extern int sata_async_notification(struct ata_port *ap); 1262 1263 extern int ata_cable_40wire(struct ata_port *ap); 1264 extern int ata_cable_80wire(struct ata_port *ap); 1265 extern int ata_cable_sata(struct ata_port *ap); 1266 extern int ata_cable_ignore(struct ata_port *ap); 1267 extern int ata_cable_unknown(struct ata_port *ap); 1268 1269 /* Timing helpers */ 1270 extern unsigned int ata_pio_need_iordy(const struct ata_device *); 1271 extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); 1272 1273 /* PCI */ 1274 #ifdef CONFIG_PCI 1275 struct pci_dev; 1276 1277 struct pci_bits { 1278 unsigned int reg; /* PCI config register to read */ 1279 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ 1280 unsigned long mask; 1281 unsigned long val; 1282 }; 1283 1284 extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); 1285 extern void ata_pci_shutdown_one(struct pci_dev *pdev); 1286 extern void ata_pci_remove_one(struct pci_dev *pdev); 1287 1288 #ifdef CONFIG_PM 1289 extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); 1290 extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); 1291 extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); 1292 extern int ata_pci_device_resume(struct pci_dev *pdev); 1293 #endif /* CONFIG_PM */ 1294 #endif /* CONFIG_PCI */ 1295 1296 struct platform_device; 1297 1298 extern void ata_platform_remove_one(struct platform_device *pdev); 1299 1300 /* 1301 * ACPI - drivers/ata/libata-acpi.c 1302 */ 1303 #ifdef CONFIG_ATA_ACPI 1304 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1305 { 1306 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) 1307 return &ap->__acpi_init_gtm; 1308 return NULL; 1309 } 1310 int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); 1311 int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); 1312 unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, 1313 const struct ata_acpi_gtm *gtm); 1314 int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm); 1315 #else 1316 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1317 { 1318 return NULL; 1319 } 1320 1321 static inline int ata_acpi_stm(const struct ata_port *ap, 1322 struct ata_acpi_gtm *stm) 1323 { 1324 return -ENOSYS; 1325 } 1326 1327 static inline int ata_acpi_gtm(const struct ata_port *ap, 1328 struct ata_acpi_gtm *stm) 1329 { 1330 return -ENOSYS; 1331 } 1332 1333 static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, 1334 const struct ata_acpi_gtm *gtm) 1335 { 1336 return 0; 1337 } 1338 1339 static inline int ata_acpi_cbl_80wire(struct ata_port *ap, 1340 const struct ata_acpi_gtm *gtm) 1341 { 1342 return 0; 1343 } 1344 #endif 1345 1346 /* 1347 * EH - drivers/ata/libata-eh.c 1348 */ 1349 extern void ata_port_schedule_eh(struct ata_port *ap); 1350 extern void ata_port_wait_eh(struct ata_port *ap); 1351 extern int ata_link_abort(struct ata_link *link); 1352 extern int ata_port_abort(struct ata_port *ap); 1353 extern int ata_port_freeze(struct ata_port *ap); 1354 1355 extern void ata_eh_freeze_port(struct ata_port *ap); 1356 extern void ata_eh_thaw_port(struct ata_port *ap); 1357 1358 extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); 1359 extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); 1360 1361 extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, 1362 ata_reset_fn_t softreset, ata_reset_fn_t hardreset, 1363 ata_postreset_fn_t postreset); 1364 extern void ata_std_error_handler(struct ata_port *ap); 1365 extern void ata_std_sched_eh(struct ata_port *ap); 1366 extern void ata_std_end_eh(struct ata_port *ap); 1367 extern int ata_link_nr_enabled(struct ata_link *link); 1368 1369 /* 1370 * Base operations to inherit from and initializers for sht 1371 * 1372 * Operations 1373 * 1374 * base : Common to all libata drivers. 1375 * sata : SATA controllers w/ native interface. 1376 * pmp : SATA controllers w/ PMP support. 1377 * sff : SFF ATA controllers w/o BMDMA support. 1378 * bmdma : SFF ATA controllers w/ BMDMA support. 1379 * 1380 * sht initializers 1381 * 1382 * BASE : Common to all libata drivers. The user must set 1383 * sg_tablesize and dma_boundary. 1384 * PIO : SFF ATA controllers w/ only PIO support. 1385 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and 1386 * dma_boundary are set to BMDMA limits. 1387 * NCQ : SATA controllers supporting NCQ. The user must set 1388 * sg_tablesize, dma_boundary and can_queue. 1389 */ 1390 extern const struct ata_port_operations ata_base_port_ops; 1391 extern const struct ata_port_operations sata_port_ops; 1392 extern const struct attribute_group *ata_common_sdev_groups[]; 1393 1394 /* 1395 * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated 1396 * by the edge drivers. Because the 'module' field of sht must be the 1397 * edge driver's module reference, otherwise the driver can be unloaded 1398 * even if the scsi_device is being accessed. 1399 */ 1400 #define __ATA_BASE_SHT(drv_name) \ 1401 .module = THIS_MODULE, \ 1402 .name = drv_name, \ 1403 .ioctl = ata_scsi_ioctl, \ 1404 ATA_SCSI_COMPAT_IOCTL \ 1405 .queuecommand = ata_scsi_queuecmd, \ 1406 .dma_need_drain = ata_scsi_dma_need_drain, \ 1407 .this_id = ATA_SHT_THIS_ID, \ 1408 .emulated = ATA_SHT_EMULATED, \ 1409 .proc_name = drv_name, \ 1410 .slave_alloc = ata_scsi_slave_alloc, \ 1411 .slave_destroy = ata_scsi_slave_destroy, \ 1412 .bios_param = ata_std_bios_param, \ 1413 .unlock_native_capacity = ata_scsi_unlock_native_capacity,\ 1414 .max_sectors = ATA_MAX_SECTORS_LBA48 1415 1416 #define ATA_SUBBASE_SHT(drv_name) \ 1417 __ATA_BASE_SHT(drv_name), \ 1418 .can_queue = ATA_DEF_QUEUE, \ 1419 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \ 1420 .device_configure = ata_scsi_device_configure 1421 1422 #define ATA_SUBBASE_SHT_QD(drv_name, drv_qd) \ 1423 __ATA_BASE_SHT(drv_name), \ 1424 .can_queue = drv_qd, \ 1425 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \ 1426 .device_configure = ata_scsi_device_configure 1427 1428 #define ATA_BASE_SHT(drv_name) \ 1429 ATA_SUBBASE_SHT(drv_name), \ 1430 .sdev_groups = ata_common_sdev_groups 1431 1432 #ifdef CONFIG_SATA_HOST 1433 extern const struct attribute_group *ata_ncq_sdev_groups[]; 1434 1435 #define ATA_NCQ_SHT(drv_name) \ 1436 ATA_SUBBASE_SHT(drv_name), \ 1437 .sdev_groups = ata_ncq_sdev_groups, \ 1438 .change_queue_depth = ata_scsi_change_queue_depth 1439 1440 #define ATA_NCQ_SHT_QD(drv_name, drv_qd) \ 1441 ATA_SUBBASE_SHT_QD(drv_name, drv_qd), \ 1442 .sdev_groups = ata_ncq_sdev_groups, \ 1443 .change_queue_depth = ata_scsi_change_queue_depth 1444 #endif 1445 1446 /* 1447 * PMP helpers 1448 */ 1449 #ifdef CONFIG_SATA_PMP 1450 static inline bool sata_pmp_supported(struct ata_port *ap) 1451 { 1452 return ap->flags & ATA_FLAG_PMP; 1453 } 1454 1455 static inline bool sata_pmp_attached(struct ata_port *ap) 1456 { 1457 return ap->nr_pmp_links != 0; 1458 } 1459 1460 static inline bool ata_is_host_link(const struct ata_link *link) 1461 { 1462 return link == &link->ap->link || link == link->ap->slave_link; 1463 } 1464 #else /* CONFIG_SATA_PMP */ 1465 static inline bool sata_pmp_supported(struct ata_port *ap) 1466 { 1467 return false; 1468 } 1469 1470 static inline bool sata_pmp_attached(struct ata_port *ap) 1471 { 1472 return false; 1473 } 1474 1475 static inline bool ata_is_host_link(const struct ata_link *link) 1476 { 1477 return true; 1478 } 1479 #endif /* CONFIG_SATA_PMP */ 1480 1481 static inline int sata_srst_pmp(struct ata_link *link) 1482 { 1483 if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) 1484 return SATA_PMP_CTRL_PORT; 1485 return link->pmp; 1486 } 1487 1488 #define ata_port_printk(level, ap, fmt, ...) \ 1489 pr_ ## level ("ata%u: " fmt, (ap)->print_id, ##__VA_ARGS__) 1490 1491 #define ata_port_err(ap, fmt, ...) \ 1492 ata_port_printk(err, ap, fmt, ##__VA_ARGS__) 1493 #define ata_port_warn(ap, fmt, ...) \ 1494 ata_port_printk(warn, ap, fmt, ##__VA_ARGS__) 1495 #define ata_port_notice(ap, fmt, ...) \ 1496 ata_port_printk(notice, ap, fmt, ##__VA_ARGS__) 1497 #define ata_port_info(ap, fmt, ...) \ 1498 ata_port_printk(info, ap, fmt, ##__VA_ARGS__) 1499 #define ata_port_dbg(ap, fmt, ...) \ 1500 ata_port_printk(debug, ap, fmt, ##__VA_ARGS__) 1501 1502 #define ata_link_printk(level, link, fmt, ...) \ 1503 do { \ 1504 if (sata_pmp_attached((link)->ap) || \ 1505 (link)->ap->slave_link) \ 1506 pr_ ## level ("ata%u.%02u: " fmt, \ 1507 (link)->ap->print_id, \ 1508 (link)->pmp, \ 1509 ##__VA_ARGS__); \ 1510 else \ 1511 pr_ ## level ("ata%u: " fmt, \ 1512 (link)->ap->print_id, \ 1513 ##__VA_ARGS__); \ 1514 } while (0) 1515 1516 #define ata_link_err(link, fmt, ...) \ 1517 ata_link_printk(err, link, fmt, ##__VA_ARGS__) 1518 #define ata_link_warn(link, fmt, ...) \ 1519 ata_link_printk(warn, link, fmt, ##__VA_ARGS__) 1520 #define ata_link_notice(link, fmt, ...) \ 1521 ata_link_printk(notice, link, fmt, ##__VA_ARGS__) 1522 #define ata_link_info(link, fmt, ...) \ 1523 ata_link_printk(info, link, fmt, ##__VA_ARGS__) 1524 #define ata_link_dbg(link, fmt, ...) \ 1525 ata_link_printk(debug, link, fmt, ##__VA_ARGS__) 1526 1527 #define ata_dev_printk(level, dev, fmt, ...) \ 1528 pr_ ## level("ata%u.%02u: " fmt, \ 1529 (dev)->link->ap->print_id, \ 1530 (dev)->link->pmp + (dev)->devno, \ 1531 ##__VA_ARGS__) 1532 1533 #define ata_dev_err(dev, fmt, ...) \ 1534 ata_dev_printk(err, dev, fmt, ##__VA_ARGS__) 1535 #define ata_dev_warn(dev, fmt, ...) \ 1536 ata_dev_printk(warn, dev, fmt, ##__VA_ARGS__) 1537 #define ata_dev_notice(dev, fmt, ...) \ 1538 ata_dev_printk(notice, dev, fmt, ##__VA_ARGS__) 1539 #define ata_dev_info(dev, fmt, ...) \ 1540 ata_dev_printk(info, dev, fmt, ##__VA_ARGS__) 1541 #define ata_dev_dbg(dev, fmt, ...) \ 1542 ata_dev_printk(debug, dev, fmt, ##__VA_ARGS__) 1543 1544 void ata_print_version(const struct device *dev, const char *version); 1545 1546 /* 1547 * ata_eh_info helpers 1548 */ 1549 extern __printf(2, 3) 1550 void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); 1551 extern __printf(2, 3) 1552 void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); 1553 extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); 1554 1555 static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) 1556 { 1557 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; 1558 ehi->flags |= ATA_EHI_HOTPLUGGED; 1559 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK; 1560 ehi->err_mask |= AC_ERR_ATA_BUS; 1561 } 1562 1563 /* 1564 * port description helpers 1565 */ 1566 extern __printf(2, 3) 1567 void ata_port_desc(struct ata_port *ap, const char *fmt, ...); 1568 #ifdef CONFIG_PCI 1569 extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, 1570 const char *name); 1571 #endif 1572 static inline void ata_port_desc_misc(struct ata_port *ap, int irq) 1573 { 1574 ata_port_desc(ap, "irq %d", irq); 1575 ata_port_desc(ap, "lpm-pol %d", ap->target_lpm_policy); 1576 } 1577 1578 static inline bool ata_tag_internal(unsigned int tag) 1579 { 1580 return tag == ATA_TAG_INTERNAL; 1581 } 1582 1583 static inline bool ata_tag_valid(unsigned int tag) 1584 { 1585 return tag < ATA_MAX_QUEUE || ata_tag_internal(tag); 1586 } 1587 1588 #define __ata_qc_for_each(ap, qc, tag, max_tag, fn) \ 1589 for ((tag) = 0; (tag) < (max_tag) && \ 1590 ({ qc = fn((ap), (tag)); 1; }); (tag)++) \ 1591 1592 /* 1593 * Internal use only, iterate commands ignoring error handling and 1594 * status of 'qc'. 1595 */ 1596 #define ata_qc_for_each_raw(ap, qc, tag) \ 1597 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, __ata_qc_from_tag) 1598 1599 /* 1600 * Iterate all potential commands that can be queued 1601 */ 1602 #define ata_qc_for_each(ap, qc, tag) \ 1603 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, ata_qc_from_tag) 1604 1605 /* 1606 * Like ata_qc_for_each, but with the internal tag included 1607 */ 1608 #define ata_qc_for_each_with_internal(ap, qc, tag) \ 1609 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE + 1, ata_qc_from_tag) 1610 1611 /* 1612 * device helpers 1613 */ 1614 static inline unsigned int ata_class_enabled(unsigned int class) 1615 { 1616 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || 1617 class == ATA_DEV_PMP || class == ATA_DEV_SEMB || 1618 class == ATA_DEV_ZAC; 1619 } 1620 1621 static inline unsigned int ata_class_disabled(unsigned int class) 1622 { 1623 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || 1624 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP || 1625 class == ATA_DEV_ZAC_UNSUP; 1626 } 1627 1628 static inline unsigned int ata_class_absent(unsigned int class) 1629 { 1630 return !ata_class_enabled(class) && !ata_class_disabled(class); 1631 } 1632 1633 static inline unsigned int ata_dev_enabled(const struct ata_device *dev) 1634 { 1635 return ata_class_enabled(dev->class); 1636 } 1637 1638 static inline unsigned int ata_dev_disabled(const struct ata_device *dev) 1639 { 1640 return ata_class_disabled(dev->class); 1641 } 1642 1643 static inline unsigned int ata_dev_absent(const struct ata_device *dev) 1644 { 1645 return ata_class_absent(dev->class); 1646 } 1647 1648 /* 1649 * link helpers 1650 */ 1651 static inline int ata_link_max_devices(const struct ata_link *link) 1652 { 1653 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) 1654 return 2; 1655 return 1; 1656 } 1657 1658 static inline int ata_link_active(struct ata_link *link) 1659 { 1660 return ata_tag_valid(link->active_tag) || link->sactive; 1661 } 1662 1663 /* 1664 * Iterators 1665 * 1666 * ATA_LITER_* constants are used to select link iteration mode and 1667 * ATA_DITER_* device iteration mode. 1668 * 1669 * For a custom iteration directly using ata_{link|dev}_next(), if 1670 * @link or @dev, respectively, is NULL, the first element is 1671 * returned. @dev and @link can be any valid device or link and the 1672 * next element according to the iteration mode will be returned. 1673 * After the last element, NULL is returned. 1674 */ 1675 enum ata_link_iter_mode { 1676 ATA_LITER_EDGE, /* if present, PMP links only; otherwise, 1677 * host link. no slave link */ 1678 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */ 1679 ATA_LITER_PMP_FIRST, /* PMP links followed by host link, 1680 * slave link still comes after host link */ 1681 }; 1682 1683 enum ata_dev_iter_mode { 1684 ATA_DITER_ENABLED, 1685 ATA_DITER_ENABLED_REVERSE, 1686 ATA_DITER_ALL, 1687 ATA_DITER_ALL_REVERSE, 1688 }; 1689 1690 extern struct ata_link *ata_link_next(struct ata_link *link, 1691 struct ata_port *ap, 1692 enum ata_link_iter_mode mode); 1693 1694 extern struct ata_device *ata_dev_next(struct ata_device *dev, 1695 struct ata_link *link, 1696 enum ata_dev_iter_mode mode); 1697 1698 /* 1699 * Shortcut notation for iterations 1700 * 1701 * ata_for_each_link() iterates over each link of @ap according to 1702 * @mode. @link points to the current link in the loop. @link is 1703 * NULL after loop termination. ata_for_each_dev() works the same way 1704 * except that it iterates over each device of @link. 1705 * 1706 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be 1707 * specified when using the following shorthand notations. Only the 1708 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be 1709 * specified. This not only increases brevity but also makes it 1710 * impossible to use ATA_LITER_* for device iteration or vice-versa. 1711 */ 1712 #define ata_for_each_link(link, ap, mode) \ 1713 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \ 1714 (link) = ata_link_next((link), (ap), ATA_LITER_##mode)) 1715 1716 #define ata_for_each_dev(dev, link, mode) \ 1717 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \ 1718 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode)) 1719 1720 /** 1721 * ata_ncq_supported - Test whether NCQ is supported 1722 * @dev: ATA device to test 1723 * 1724 * LOCKING: 1725 * spin_lock_irqsave(host lock) 1726 * 1727 * RETURNS: 1728 * true if @dev supports NCQ, false otherwise. 1729 */ 1730 static inline bool ata_ncq_supported(struct ata_device *dev) 1731 { 1732 if (!IS_ENABLED(CONFIG_SATA_HOST)) 1733 return false; 1734 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; 1735 } 1736 1737 /** 1738 * ata_ncq_enabled - Test whether NCQ is enabled 1739 * @dev: ATA device to test 1740 * 1741 * LOCKING: 1742 * spin_lock_irqsave(host lock) 1743 * 1744 * RETURNS: 1745 * true if NCQ is enabled for @dev, false otherwise. 1746 */ 1747 static inline bool ata_ncq_enabled(struct ata_device *dev) 1748 { 1749 return ata_ncq_supported(dev) && !(dev->flags & ATA_DFLAG_NCQ_OFF); 1750 } 1751 1752 static inline bool ata_fpdma_dsm_supported(struct ata_device *dev) 1753 { 1754 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1755 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] & 1756 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM); 1757 } 1758 1759 static inline bool ata_fpdma_read_log_supported(struct ata_device *dev) 1760 { 1761 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1762 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET] & 1763 ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED); 1764 } 1765 1766 static inline bool ata_fpdma_zac_mgmt_in_supported(struct ata_device *dev) 1767 { 1768 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1769 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET] & 1770 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED); 1771 } 1772 1773 static inline bool ata_fpdma_zac_mgmt_out_supported(struct ata_device *dev) 1774 { 1775 return (dev->ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET] & 1776 ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT); 1777 } 1778 1779 static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) 1780 { 1781 qc->tf.ctl |= ATA_NIEN; 1782 } 1783 1784 static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, 1785 unsigned int tag) 1786 { 1787 if (ata_tag_valid(tag)) 1788 return &ap->qcmd[tag]; 1789 return NULL; 1790 } 1791 1792 static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, 1793 unsigned int tag) 1794 { 1795 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); 1796 1797 if (unlikely(!qc)) 1798 return qc; 1799 1800 if ((qc->flags & (ATA_QCFLAG_ACTIVE | 1801 ATA_QCFLAG_EH)) == ATA_QCFLAG_ACTIVE) 1802 return qc; 1803 1804 return NULL; 1805 } 1806 1807 static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc) 1808 { 1809 return qc->nbytes - min(qc->extrabytes, qc->nbytes); 1810 } 1811 1812 static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) 1813 { 1814 memset(tf, 0, sizeof(*tf)); 1815 1816 #ifdef CONFIG_ATA_SFF 1817 tf->ctl = dev->link->ap->ctl; 1818 #else 1819 tf->ctl = ATA_DEVCTL_OBS; 1820 #endif 1821 if (dev->devno == 0) 1822 tf->device = ATA_DEVICE_OBS; 1823 else 1824 tf->device = ATA_DEVICE_OBS | ATA_DEV1; 1825 } 1826 1827 static inline void ata_qc_reinit(struct ata_queued_cmd *qc) 1828 { 1829 qc->dma_dir = DMA_NONE; 1830 qc->sg = NULL; 1831 qc->flags = 0; 1832 qc->cursg = NULL; 1833 qc->cursg_ofs = 0; 1834 qc->nbytes = qc->extrabytes = qc->curbytes = 0; 1835 qc->n_elem = 0; 1836 qc->err_mask = 0; 1837 qc->sect_size = ATA_SECT_SIZE; 1838 1839 ata_tf_init(qc->dev, &qc->tf); 1840 1841 /* init result_tf such that it indicates normal completion */ 1842 qc->result_tf.command = ATA_DRDY; 1843 qc->result_tf.feature = 0; 1844 } 1845 1846 static inline int ata_try_flush_cache(const struct ata_device *dev) 1847 { 1848 return ata_id_wcache_enabled(dev->id) || 1849 ata_id_has_flush(dev->id) || 1850 ata_id_has_flush_ext(dev->id); 1851 } 1852 1853 static inline unsigned int ac_err_mask(u8 status) 1854 { 1855 if (status & (ATA_BUSY | ATA_DRQ)) 1856 return AC_ERR_HSM; 1857 if (status & (ATA_ERR | ATA_DF)) 1858 return AC_ERR_DEV; 1859 return 0; 1860 } 1861 1862 static inline unsigned int __ac_err_mask(u8 status) 1863 { 1864 unsigned int mask = ac_err_mask(status); 1865 if (mask == 0) 1866 return AC_ERR_OTHER; 1867 return mask; 1868 } 1869 1870 static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) 1871 { 1872 return *(struct ata_port **)&host->hostdata[0]; 1873 } 1874 1875 static inline int ata_check_ready(u8 status) 1876 { 1877 if (!(status & ATA_BUSY)) 1878 return 1; 1879 1880 /* 0xff indicates either no device or device not ready */ 1881 if (status == 0xff) 1882 return -ENODEV; 1883 1884 return 0; 1885 } 1886 1887 static inline unsigned long ata_deadline(unsigned long from_jiffies, 1888 unsigned int timeout_msecs) 1889 { 1890 return from_jiffies + msecs_to_jiffies(timeout_msecs); 1891 } 1892 1893 /* Don't open code these in drivers as there are traps. Firstly the range may 1894 change in future hardware and specs, secondly 0xFF means 'no DMA' but is 1895 > UDMA_0. Dyma ddreigiau */ 1896 1897 static inline bool ata_using_mwdma(struct ata_device *adev) 1898 { 1899 return adev->dma_mode >= XFER_MW_DMA_0 && 1900 adev->dma_mode <= XFER_MW_DMA_4; 1901 } 1902 1903 static inline bool ata_using_udma(struct ata_device *adev) 1904 { 1905 return adev->dma_mode >= XFER_UDMA_0 && 1906 adev->dma_mode <= XFER_UDMA_7; 1907 } 1908 1909 static inline bool ata_dma_enabled(struct ata_device *adev) 1910 { 1911 return adev->dma_mode != 0xFF; 1912 } 1913 1914 /************************************************************************** 1915 * PATA timings - drivers/ata/libata-pata-timings.c 1916 */ 1917 extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); 1918 extern int ata_timing_compute(struct ata_device *, unsigned short, 1919 struct ata_timing *, int, int); 1920 extern void ata_timing_merge(const struct ata_timing *, 1921 const struct ata_timing *, struct ata_timing *, 1922 unsigned int); 1923 1924 /************************************************************************** 1925 * PMP - drivers/ata/libata-pmp.c 1926 */ 1927 #ifdef CONFIG_SATA_PMP 1928 1929 extern const struct ata_port_operations sata_pmp_port_ops; 1930 1931 extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); 1932 extern void sata_pmp_error_handler(struct ata_port *ap); 1933 1934 #else /* CONFIG_SATA_PMP */ 1935 1936 #define sata_pmp_port_ops sata_port_ops 1937 #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer 1938 #define sata_pmp_error_handler ata_std_error_handler 1939 1940 #endif /* CONFIG_SATA_PMP */ 1941 1942 1943 /************************************************************************** 1944 * SFF - drivers/ata/libata-sff.c 1945 */ 1946 #ifdef CONFIG_ATA_SFF 1947 1948 extern const struct ata_port_operations ata_sff_port_ops; 1949 extern const struct ata_port_operations ata_bmdma32_port_ops; 1950 1951 /* PIO only, sg_tablesize and dma_boundary limits can be removed */ 1952 #define ATA_PIO_SHT(drv_name) \ 1953 ATA_BASE_SHT(drv_name), \ 1954 .sg_tablesize = LIBATA_MAX_PRD, \ 1955 .dma_boundary = ATA_DMA_BOUNDARY 1956 1957 extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); 1958 extern u8 ata_sff_check_status(struct ata_port *ap); 1959 extern void ata_sff_pause(struct ata_port *ap); 1960 extern void ata_sff_dma_pause(struct ata_port *ap); 1961 extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline); 1962 extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); 1963 extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf); 1964 extern void ata_sff_exec_command(struct ata_port *ap, 1965 const struct ata_taskfile *tf); 1966 extern unsigned int ata_sff_data_xfer(struct ata_queued_cmd *qc, 1967 unsigned char *buf, unsigned int buflen, int rw); 1968 extern unsigned int ata_sff_data_xfer32(struct ata_queued_cmd *qc, 1969 unsigned char *buf, unsigned int buflen, int rw); 1970 extern void ata_sff_irq_on(struct ata_port *ap); 1971 extern void ata_sff_irq_clear(struct ata_port *ap); 1972 extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, 1973 u8 status, int in_wq); 1974 extern void ata_sff_queue_work(struct work_struct *work); 1975 extern void ata_sff_queue_delayed_work(struct delayed_work *dwork, 1976 unsigned long delay); 1977 extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay); 1978 extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); 1979 extern void ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); 1980 extern unsigned int ata_sff_port_intr(struct ata_port *ap, 1981 struct ata_queued_cmd *qc); 1982 extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); 1983 extern void ata_sff_lost_interrupt(struct ata_port *ap); 1984 extern void ata_sff_freeze(struct ata_port *ap); 1985 extern void ata_sff_thaw(struct ata_port *ap); 1986 extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline); 1987 extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, 1988 u8 *r_err); 1989 extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask, 1990 unsigned long deadline); 1991 extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes, 1992 unsigned long deadline); 1993 extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class, 1994 unsigned long deadline); 1995 extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes); 1996 extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc); 1997 extern void ata_sff_error_handler(struct ata_port *ap); 1998 extern void ata_sff_std_ports(struct ata_ioports *ioaddr); 1999 #ifdef CONFIG_PCI 2000 extern int ata_pci_sff_init_host(struct ata_host *host); 2001 extern int ata_pci_sff_prepare_host(struct pci_dev *pdev, 2002 const struct ata_port_info * const * ppi, 2003 struct ata_host **r_host); 2004 extern int ata_pci_sff_activate_host(struct ata_host *host, 2005 irq_handler_t irq_handler, 2006 const struct scsi_host_template *sht); 2007 extern int ata_pci_sff_init_one(struct pci_dev *pdev, 2008 const struct ata_port_info * const * ppi, 2009 const struct scsi_host_template *sht, void *host_priv, int hflags); 2010 #endif /* CONFIG_PCI */ 2011 2012 #ifdef CONFIG_ATA_BMDMA 2013 2014 extern const struct ata_port_operations ata_bmdma_port_ops; 2015 2016 #define ATA_BMDMA_SHT(drv_name) \ 2017 ATA_BASE_SHT(drv_name), \ 2018 .sg_tablesize = LIBATA_MAX_PRD, \ 2019 .dma_boundary = ATA_DMA_BOUNDARY 2020 2021 extern enum ata_completion_errors ata_bmdma_qc_prep(struct ata_queued_cmd *qc); 2022 extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc); 2023 extern enum ata_completion_errors ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc); 2024 extern unsigned int ata_bmdma_port_intr(struct ata_port *ap, 2025 struct ata_queued_cmd *qc); 2026 extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance); 2027 extern void ata_bmdma_error_handler(struct ata_port *ap); 2028 extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc); 2029 extern void ata_bmdma_irq_clear(struct ata_port *ap); 2030 extern void ata_bmdma_setup(struct ata_queued_cmd *qc); 2031 extern void ata_bmdma_start(struct ata_queued_cmd *qc); 2032 extern void ata_bmdma_stop(struct ata_queued_cmd *qc); 2033 extern u8 ata_bmdma_status(struct ata_port *ap); 2034 extern int ata_bmdma_port_start(struct ata_port *ap); 2035 extern int ata_bmdma_port_start32(struct ata_port *ap); 2036 2037 #ifdef CONFIG_PCI 2038 extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); 2039 extern void ata_pci_bmdma_init(struct ata_host *host); 2040 extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev, 2041 const struct ata_port_info * const * ppi, 2042 struct ata_host **r_host); 2043 extern int ata_pci_bmdma_init_one(struct pci_dev *pdev, 2044 const struct ata_port_info * const * ppi, 2045 const struct scsi_host_template *sht, 2046 void *host_priv, int hflags); 2047 #endif /* CONFIG_PCI */ 2048 #endif /* CONFIG_ATA_BMDMA */ 2049 2050 /** 2051 * ata_sff_busy_wait - Wait for a port status register 2052 * @ap: Port to wait for. 2053 * @bits: bits that must be clear 2054 * @max: number of 10uS waits to perform 2055 * 2056 * Waits up to max*10 microseconds for the selected bits in the port's 2057 * status register to be cleared. 2058 * Returns final value of status register. 2059 * 2060 * LOCKING: 2061 * Inherited from caller. 2062 */ 2063 static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits, 2064 unsigned int max) 2065 { 2066 u8 status; 2067 2068 do { 2069 udelay(10); 2070 status = ap->ops->sff_check_status(ap); 2071 max--; 2072 } while (status != 0xff && (status & bits) && (max > 0)); 2073 2074 return status; 2075 } 2076 2077 /** 2078 * ata_wait_idle - Wait for a port to be idle. 2079 * @ap: Port to wait for. 2080 * 2081 * Waits up to 10ms for port's BUSY and DRQ signals to clear. 2082 * Returns final value of status register. 2083 * 2084 * LOCKING: 2085 * Inherited from caller. 2086 */ 2087 static inline u8 ata_wait_idle(struct ata_port *ap) 2088 { 2089 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); 2090 2091 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) 2092 ata_port_dbg(ap, "abnormal Status 0x%X\n", status); 2093 2094 return status; 2095 } 2096 #endif /* CONFIG_ATA_SFF */ 2097 2098 #endif /* __LINUX_LIBATA_H__ */ 2099