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 58enum { 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 /* Horkage types. May be set by libata or controller on drives 366 (some horkage may be drive/controller pair dependent */ 367 368 ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ 369 ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ 370 ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ 371 ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ 372 ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ 373 ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */ 374 ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ 375 ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */ 376 ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */ 377 ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */ 378 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands 379 not multiple of 16 bytes */ 380 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */ 381 ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */ 382 ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */ 383 ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */ 384 ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */ 385 ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17), /* Set max sects to 65535 */ 386 ATA_HORKAGE_ATAPI_DMADIR = (1 << 18), /* device requires dmadir */ 387 ATA_HORKAGE_NO_NCQ_TRIM = (1 << 19), /* don't use queued TRIM */ 388 ATA_HORKAGE_NOLPM = (1 << 20), /* don't use LPM */ 389 ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21), /* some WDs have broken LPM */ 390 ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),/* guarantees zero after trim */ 391 ATA_HORKAGE_NO_DMA_LOG = (1 << 23), /* don't use DMA for log read */ 392 ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */ 393 ATA_HORKAGE_MAX_SEC_1024 = (1 << 25), /* Limit max sects to 1024 */ 394 ATA_HORKAGE_MAX_TRIM_128M = (1 << 26), /* Limit max trim size to 128M */ 395 ATA_HORKAGE_NO_NCQ_ON_ATI = (1 << 27), /* Disable NCQ on ATI chipset */ 396 ATA_HORKAGE_NO_ID_DEV_LOG = (1 << 28), /* Identify device log missing */ 397 ATA_HORKAGE_NO_LOG_DIR = (1 << 29), /* Do not read log directory */ 398 ATA_HORKAGE_NO_FUA = (1 << 30), /* Do not use FUA */ 399 400 /* DMA mask for user DMA control: User visible values; DO NOT 401 renumber */ 402 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ 403 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ 404 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ 405 406 /* ATAPI command types */ 407 ATAPI_READ = 0, /* READs */ 408 ATAPI_WRITE = 1, /* WRITEs */ 409 ATAPI_READ_CD = 2, /* READ CD [MSF] */ 410 ATAPI_PASS_THRU = 3, /* SAT pass-thru */ 411 ATAPI_MISC = 4, /* the rest */ 412 413 /* Timing constants */ 414 ATA_TIMING_SETUP = (1 << 0), 415 ATA_TIMING_ACT8B = (1 << 1), 416 ATA_TIMING_REC8B = (1 << 2), 417 ATA_TIMING_CYC8B = (1 << 3), 418 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | 419 ATA_TIMING_CYC8B, 420 ATA_TIMING_ACTIVE = (1 << 4), 421 ATA_TIMING_RECOVER = (1 << 5), 422 ATA_TIMING_DMACK_HOLD = (1 << 6), 423 ATA_TIMING_CYCLE = (1 << 7), 424 ATA_TIMING_UDMA = (1 << 8), 425 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | 426 ATA_TIMING_REC8B | ATA_TIMING_CYC8B | 427 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | 428 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE | 429 ATA_TIMING_UDMA, 430 431 /* ACPI constants */ 432 ATA_ACPI_FILTER_SETXFER = 1 << 0, 433 ATA_ACPI_FILTER_LOCK = 1 << 1, 434 ATA_ACPI_FILTER_DIPM = 1 << 2, 435 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */ 436 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */ 437 438 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER | 439 ATA_ACPI_FILTER_LOCK | 440 ATA_ACPI_FILTER_DIPM, 441}; 442 443enum ata_xfer_mask { 444 ATA_MASK_PIO = ((1U << ATA_NR_PIO_MODES) - 1) << ATA_SHIFT_PIO, 445 ATA_MASK_MWDMA = ((1U << ATA_NR_MWDMA_MODES) - 1) << ATA_SHIFT_MWDMA, 446 ATA_MASK_UDMA = ((1U << ATA_NR_UDMA_MODES) - 1) << ATA_SHIFT_UDMA, 447}; 448 449enum hsm_task_states { 450 HSM_ST_IDLE, /* no command on going */ 451 HSM_ST_FIRST, /* (waiting the device to) 452 write CDB or first data block */ 453 HSM_ST, /* (waiting the device to) transfer data */ 454 HSM_ST_LAST, /* (waiting the device to) complete command */ 455 HSM_ST_ERR, /* error */ 456}; 457 458enum ata_completion_errors { 459 AC_ERR_OK = 0, /* no error */ 460 AC_ERR_DEV = (1 << 0), /* device reported error */ 461 AC_ERR_HSM = (1 << 1), /* host state machine violation */ 462 AC_ERR_TIMEOUT = (1 << 2), /* timeout */ 463 AC_ERR_MEDIA = (1 << 3), /* media error */ 464 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ 465 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ 466 AC_ERR_SYSTEM = (1 << 6), /* system error */ 467 AC_ERR_INVALID = (1 << 7), /* invalid argument */ 468 AC_ERR_OTHER = (1 << 8), /* unknown */ 469 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ 470 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ 471}; 472 473/* 474 * Link power management policy: If you alter this, you also need to 475 * alter libata-sata.c (for the ascii descriptions) 476 */ 477enum ata_lpm_policy { 478 ATA_LPM_UNKNOWN, 479 ATA_LPM_MAX_POWER, 480 ATA_LPM_MED_POWER, 481 ATA_LPM_MED_POWER_WITH_DIPM, /* Med power + DIPM as win IRST does */ 482 ATA_LPM_MIN_POWER_WITH_PARTIAL, /* Min Power + partial and slumber */ 483 ATA_LPM_MIN_POWER, /* Min power + no partial (slumber only) */ 484}; 485 486enum ata_lpm_hints { 487 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */ 488 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */ 489 ATA_LPM_WAKE_ONLY = (1 << 2), /* only wake up link */ 490}; 491 492/* forward declarations */ 493struct scsi_device; 494struct ata_port_operations; 495struct ata_port; 496struct ata_link; 497struct ata_queued_cmd; 498 499/* typedefs */ 500typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); 501typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); 502typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, 503 unsigned long deadline); 504typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); 505 506extern struct device_attribute dev_attr_unload_heads; 507#ifdef CONFIG_SATA_HOST 508extern struct device_attribute dev_attr_link_power_management_policy; 509extern struct device_attribute dev_attr_ncq_prio_supported; 510extern struct device_attribute dev_attr_ncq_prio_enable; 511extern struct device_attribute dev_attr_em_message_type; 512extern struct device_attribute dev_attr_em_message; 513extern struct device_attribute dev_attr_sw_activity; 514#endif 515 516enum sw_activity { 517 OFF, 518 BLINK_ON, 519 BLINK_OFF, 520}; 521 522struct ata_taskfile { 523 unsigned long flags; /* ATA_TFLAG_xxx */ 524 u8 protocol; /* ATA_PROT_xxx */ 525 526 u8 ctl; /* control reg */ 527 528 u8 hob_feature; /* additional data */ 529 u8 hob_nsect; /* to support LBA48 */ 530 u8 hob_lbal; 531 u8 hob_lbam; 532 u8 hob_lbah; 533 534 union { 535 u8 error; 536 u8 feature; 537 }; 538 u8 nsect; 539 u8 lbal; 540 u8 lbam; 541 u8 lbah; 542 543 u8 device; 544 545 union { 546 u8 status; 547 u8 command; 548 }; 549 550 u32 auxiliary; /* auxiliary field */ 551 /* from SATA 3.1 and */ 552 /* ATA-8 ACS-3 */ 553}; 554 555#ifdef CONFIG_ATA_SFF 556struct ata_ioports { 557 void __iomem *cmd_addr; 558 void __iomem *data_addr; 559 void __iomem *error_addr; 560 void __iomem *feature_addr; 561 void __iomem *nsect_addr; 562 void __iomem *lbal_addr; 563 void __iomem *lbam_addr; 564 void __iomem *lbah_addr; 565 void __iomem *device_addr; 566 void __iomem *status_addr; 567 void __iomem *command_addr; 568 void __iomem *altstatus_addr; 569 void __iomem *ctl_addr; 570#ifdef CONFIG_ATA_BMDMA 571 void __iomem *bmdma_addr; 572#endif /* CONFIG_ATA_BMDMA */ 573 void __iomem *scr_addr; 574}; 575#endif /* CONFIG_ATA_SFF */ 576 577struct ata_host { 578 spinlock_t lock; 579 struct device *dev; 580 void __iomem * const *iomap; 581 unsigned int n_ports; 582 unsigned int n_tags; /* nr of NCQ tags */ 583 void *private_data; 584 struct ata_port_operations *ops; 585 unsigned long flags; 586 struct kref kref; 587 588 struct mutex eh_mutex; 589 struct task_struct *eh_owner; 590 591 struct ata_port *simplex_claimed; /* channel owning the DMA */ 592 struct ata_port *ports[]; 593}; 594 595struct ata_queued_cmd { 596 struct ata_port *ap; 597 struct ata_device *dev; 598 599 struct scsi_cmnd *scsicmd; 600 void (*scsidone)(struct scsi_cmnd *); 601 602 struct ata_taskfile tf; 603 u8 cdb[ATAPI_CDB_LEN]; 604 605 unsigned long flags; /* ATA_QCFLAG_xxx */ 606 unsigned int tag; /* libata core tag */ 607 unsigned int hw_tag; /* driver tag */ 608 unsigned int n_elem; 609 unsigned int orig_n_elem; 610 611 int dma_dir; 612 613 unsigned int sect_size; 614 615 unsigned int nbytes; 616 unsigned int extrabytes; 617 unsigned int curbytes; 618 619 struct scatterlist sgent; 620 621 struct scatterlist *sg; 622 623 struct scatterlist *cursg; 624 unsigned int cursg_ofs; 625 626 unsigned int err_mask; 627 struct ata_taskfile result_tf; 628 ata_qc_cb_t complete_fn; 629 630 void *private_data; 631 void *lldd_task; 632}; 633 634struct ata_port_stats { 635 unsigned long unhandled_irq; 636 unsigned long idle_irq; 637 unsigned long rw_reqbuf; 638}; 639 640struct ata_ering_entry { 641 unsigned int eflags; 642 unsigned int err_mask; 643 u64 timestamp; 644}; 645 646struct ata_ering { 647 int cursor; 648 struct ata_ering_entry ring[ATA_ERING_SIZE]; 649}; 650 651struct ata_cpr { 652 u8 num; 653 u8 num_storage_elements; 654 u64 start_lba; 655 u64 num_lbas; 656}; 657 658struct ata_cpr_log { 659 u8 nr_cpr; 660 struct ata_cpr cpr[] __counted_by(nr_cpr); 661}; 662 663struct ata_device { 664 struct ata_link *link; 665 unsigned int devno; /* 0 or 1 */ 666 unsigned int horkage; /* List of broken features */ 667 unsigned long flags; /* ATA_DFLAG_xxx */ 668 struct scsi_device *sdev; /* attached SCSI device */ 669 void *private_data; 670#ifdef CONFIG_ATA_ACPI 671 union acpi_object *gtf_cache; 672 unsigned int gtf_filter; 673#endif 674#ifdef CONFIG_SATA_ZPODD 675 void *zpodd; 676#endif 677 struct device tdev; 678 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */ 679 u64 n_sectors; /* size of device, if ATA */ 680 u64 n_native_sectors; /* native size, if ATA */ 681 unsigned int class; /* ATA_DEV_xxx */ 682 unsigned long unpark_deadline; 683 684 u8 pio_mode; 685 u8 dma_mode; 686 u8 xfer_mode; 687 unsigned int xfer_shift; /* ATA_SHIFT_xxx */ 688 689 unsigned int multi_count; /* sectors count for 690 READ/WRITE MULTIPLE */ 691 unsigned int max_sectors; /* per-device max sectors */ 692 unsigned int cdb_len; 693 694 /* per-dev xfer mask */ 695 unsigned int pio_mask; 696 unsigned int mwdma_mask; 697 unsigned int udma_mask; 698 699 /* for CHS addressing */ 700 u16 cylinders; /* Number of cylinders */ 701 u16 heads; /* Number of heads */ 702 u16 sectors; /* Number of sectors per track */ 703 704 union { 705 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ 706 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ 707 } ____cacheline_aligned; 708 709 /* DEVSLP Timing Variables from Identify Device Data Log */ 710 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE]; 711 712 /* NCQ send and receive log subcommand support */ 713 u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE]; 714 u8 ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_SIZE]; 715 716 /* ZAC zone configuration */ 717 u32 zac_zoned_cap; 718 u32 zac_zones_optimal_open; 719 u32 zac_zones_optimal_nonseq; 720 u32 zac_zones_max_open; 721 722 /* Concurrent positioning ranges */ 723 struct ata_cpr_log *cpr_log; 724 725 /* Command Duration Limits log support */ 726 u8 cdl[ATA_LOG_CDL_SIZE]; 727 728 /* error history */ 729 int spdn_cnt; 730 /* ering is CLEAR_END, read comment above CLEAR_END */ 731 struct ata_ering ering; 732}; 733 734/* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are 735 * cleared to zero on ata_dev_init(). 736 */ 737#define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors) 738#define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering) 739 740struct ata_eh_info { 741 struct ata_device *dev; /* offending device */ 742 u32 serror; /* SError from LLDD */ 743 unsigned int err_mask; /* port-wide err_mask */ 744 unsigned int action; /* ATA_EH_* action mask */ 745 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ 746 unsigned int flags; /* ATA_EHI_* flags */ 747 748 unsigned int probe_mask; 749 750 char desc[ATA_EH_DESC_LEN]; 751 int desc_len; 752}; 753 754struct ata_eh_context { 755 struct ata_eh_info i; 756 int tries[ATA_MAX_DEVICES]; 757 int cmd_timeout_idx[ATA_MAX_DEVICES] 758 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE]; 759 unsigned int classes[ATA_MAX_DEVICES]; 760 unsigned int did_probe_mask; 761 unsigned int unloaded_mask; 762 unsigned int saved_ncq_enabled; 763 u8 saved_xfer_mode[ATA_MAX_DEVICES]; 764 /* timestamp for the last reset attempt or success */ 765 unsigned long last_reset; 766}; 767 768struct ata_acpi_drive 769{ 770 u32 pio; 771 u32 dma; 772} __packed; 773 774struct ata_acpi_gtm { 775 struct ata_acpi_drive drive[2]; 776 u32 flags; 777} __packed; 778 779struct ata_link { 780 struct ata_port *ap; 781 int pmp; /* port multiplier port # */ 782 783 struct device tdev; 784 unsigned int active_tag; /* active tag on this link */ 785 u32 sactive; /* active NCQ commands */ 786 787 unsigned int flags; /* ATA_LFLAG_xxx */ 788 789 u32 saved_scontrol; /* SControl on probe */ 790 unsigned int hw_sata_spd_limit; 791 unsigned int sata_spd_limit; 792 unsigned int sata_spd; /* current SATA PHY speed */ 793 enum ata_lpm_policy lpm_policy; 794 795 /* record runtime error info, protected by host_set lock */ 796 struct ata_eh_info eh_info; 797 /* EH context */ 798 struct ata_eh_context eh_context; 799 800 struct ata_device device[ATA_MAX_DEVICES]; 801 802 unsigned long last_lpm_change; /* when last LPM change happened */ 803}; 804#define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag) 805#define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0]) 806 807struct ata_port { 808 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ 809 struct ata_port_operations *ops; 810 spinlock_t *lock; 811 /* Flags owned by the EH context. Only EH should touch these once the 812 port is active */ 813 unsigned long flags; /* ATA_FLAG_xxx */ 814 /* Flags that change dynamically, protected by ap->lock */ 815 unsigned int pflags; /* ATA_PFLAG_xxx */ 816 unsigned int print_id; /* user visible unique port ID */ 817 unsigned int local_port_no; /* host local port num */ 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 890struct 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 992struct 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 1002struct 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 */ 1018extern struct ata_port_operations ata_dummy_port_ops; 1019extern const struct ata_port_info ata_dummy_port_info; 1020 1021static inline bool ata_is_atapi(u8 prot) 1022{ 1023 return prot & ATA_PROT_FLAG_ATAPI; 1024} 1025 1026static inline bool ata_is_pio(u8 prot) 1027{ 1028 return prot & ATA_PROT_FLAG_PIO; 1029} 1030 1031static inline bool ata_is_dma(u8 prot) 1032{ 1033 return prot & ATA_PROT_FLAG_DMA; 1034} 1035 1036static inline bool ata_is_ncq(u8 prot) 1037{ 1038 return prot & ATA_PROT_FLAG_NCQ; 1039} 1040 1041static inline bool ata_is_data(u8 prot) 1042{ 1043 return prot & (ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA); 1044} 1045 1046static 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 1055static inline int ata_port_is_dummy(struct ata_port *ap) 1056{ 1057 return ap->ops == &ata_dummy_port_ops; 1058} 1059 1060static inline bool ata_port_is_frozen(const struct ata_port *ap) 1061{ 1062 return ap->pflags & ATA_PFLAG_FROZEN; 1063} 1064 1065extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); 1066extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, 1067 int (*check_ready)(struct ata_link *link)); 1068extern int sata_std_hardreset(struct ata_link *link, unsigned int *class, 1069 unsigned long deadline); 1070extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); 1071 1072extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports); 1073extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, 1074 const struct ata_port_info * const * ppi, int n_ports); 1075extern void ata_host_get(struct ata_host *host); 1076extern void ata_host_put(struct ata_host *host); 1077extern int ata_host_start(struct ata_host *host); 1078extern int ata_host_register(struct ata_host *host, 1079 const struct scsi_host_template *sht); 1080extern 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); 1083extern void ata_host_detach(struct ata_host *host); 1084extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *); 1085extern int ata_scsi_detect(struct scsi_host_template *sht); 1086extern int ata_scsi_ioctl(struct scsi_device *dev, unsigned int cmd, 1087 void __user *arg); 1088#ifdef CONFIG_COMPAT 1089#define ATA_SCSI_COMPAT_IOCTL .compat_ioctl = ata_scsi_ioctl, 1090#else 1091#define ATA_SCSI_COMPAT_IOCTL /* empty */ 1092#endif 1093extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd); 1094#if IS_REACHABLE(CONFIG_ATA) 1095bool ata_scsi_dma_need_drain(struct request *rq); 1096#else 1097#define ata_scsi_dma_need_drain NULL 1098#endif 1099extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev, 1100 unsigned int cmd, void __user *arg); 1101extern bool ata_link_online(struct ata_link *link); 1102extern bool ata_link_offline(struct ata_link *link); 1103#ifdef CONFIG_PM 1104extern void ata_host_suspend(struct ata_host *host, pm_message_t mesg); 1105extern void ata_host_resume(struct ata_host *host); 1106extern void ata_sas_port_suspend(struct ata_port *ap); 1107extern void ata_sas_port_resume(struct ata_port *ap); 1108#else 1109static inline void ata_sas_port_suspend(struct ata_port *ap) 1110{ 1111} 1112static inline void ata_sas_port_resume(struct ata_port *ap) 1113{ 1114} 1115#endif 1116extern int ata_ratelimit(void); 1117extern void ata_msleep(struct ata_port *ap, unsigned int msecs); 1118extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask, 1119 u32 val, unsigned int interval, unsigned int timeout); 1120extern int atapi_cmd_type(u8 opcode); 1121extern unsigned int ata_pack_xfermask(unsigned int pio_mask, 1122 unsigned int mwdma_mask, 1123 unsigned int udma_mask); 1124extern void ata_unpack_xfermask(unsigned int xfer_mask, 1125 unsigned int *pio_mask, 1126 unsigned int *mwdma_mask, 1127 unsigned int *udma_mask); 1128extern u8 ata_xfer_mask2mode(unsigned int xfer_mask); 1129extern unsigned int ata_xfer_mode2mask(u8 xfer_mode); 1130extern int ata_xfer_mode2shift(u8 xfer_mode); 1131extern const char *ata_mode_string(unsigned int xfer_mask); 1132extern unsigned int ata_id_xfermask(const u16 *id); 1133extern int ata_std_qc_defer(struct ata_queued_cmd *qc); 1134extern enum ata_completion_errors ata_noop_qc_prep(struct ata_queued_cmd *qc); 1135extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, 1136 unsigned int n_elem); 1137extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); 1138extern unsigned int ata_port_classify(struct ata_port *ap, 1139 const struct ata_taskfile *tf); 1140extern void ata_dev_disable(struct ata_device *adev); 1141extern void ata_id_string(const u16 *id, unsigned char *s, 1142 unsigned int ofs, unsigned int len); 1143extern void ata_id_c_string(const u16 *id, unsigned char *s, 1144 unsigned int ofs, unsigned int len); 1145extern unsigned int ata_do_dev_read_id(struct ata_device *dev, 1146 struct ata_taskfile *tf, __le16 *id); 1147extern void ata_qc_complete(struct ata_queued_cmd *qc); 1148extern u64 ata_qc_get_active(struct ata_port *ap); 1149extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd); 1150extern int ata_std_bios_param(struct scsi_device *sdev, 1151 struct block_device *bdev, 1152 sector_t capacity, int geom[]); 1153extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev); 1154extern int ata_scsi_slave_alloc(struct scsi_device *sdev); 1155extern int ata_scsi_slave_config(struct scsi_device *sdev); 1156extern void ata_scsi_slave_destroy(struct scsi_device *sdev); 1157extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, 1158 int queue_depth); 1159extern int ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, 1160 int queue_depth); 1161extern struct ata_device *ata_dev_pair(struct ata_device *adev); 1162extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); 1163extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap); 1164extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q); 1165 1166/* 1167 * SATA specific code - drivers/ata/libata-sata.c 1168 */ 1169#ifdef CONFIG_SATA_HOST 1170extern const unsigned int sata_deb_timing_normal[]; 1171extern const unsigned int sata_deb_timing_hotplug[]; 1172extern const unsigned int sata_deb_timing_long[]; 1173 1174static inline const unsigned int * 1175sata_ehc_deb_timing(struct ata_eh_context *ehc) 1176{ 1177 if (ehc->i.flags & ATA_EHI_HOTPLUGGED) 1178 return sata_deb_timing_hotplug; 1179 else 1180 return sata_deb_timing_normal; 1181} 1182 1183extern int sata_scr_valid(struct ata_link *link); 1184extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); 1185extern int sata_scr_write(struct ata_link *link, int reg, u32 val); 1186extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); 1187extern int sata_set_spd(struct ata_link *link); 1188extern int sata_link_hardreset(struct ata_link *link, 1189 const unsigned int *timing, unsigned long deadline, 1190 bool *online, int (*check_ready)(struct ata_link *)); 1191extern int sata_link_resume(struct ata_link *link, const unsigned int *params, 1192 unsigned long deadline); 1193extern int ata_eh_read_sense_success_ncq_log(struct ata_link *link); 1194extern void ata_eh_analyze_ncq_error(struct ata_link *link); 1195#else 1196static inline const unsigned int * 1197sata_ehc_deb_timing(struct ata_eh_context *ehc) 1198{ 1199 return NULL; 1200} 1201static inline int sata_scr_valid(struct ata_link *link) { return 0; } 1202static inline int sata_scr_read(struct ata_link *link, int reg, u32 *val) 1203{ 1204 return -EOPNOTSUPP; 1205} 1206static inline int sata_scr_write(struct ata_link *link, int reg, u32 val) 1207{ 1208 return -EOPNOTSUPP; 1209} 1210static inline int sata_scr_write_flush(struct ata_link *link, int reg, u32 val) 1211{ 1212 return -EOPNOTSUPP; 1213} 1214static inline int sata_set_spd(struct ata_link *link) { return -EOPNOTSUPP; } 1215static inline int sata_link_hardreset(struct ata_link *link, 1216 const unsigned int *timing, 1217 unsigned long deadline, 1218 bool *online, 1219 int (*check_ready)(struct ata_link *)) 1220{ 1221 if (online) 1222 *online = false; 1223 return -EOPNOTSUPP; 1224} 1225static inline int sata_link_resume(struct ata_link *link, 1226 const unsigned int *params, 1227 unsigned long deadline) 1228{ 1229 return -EOPNOTSUPP; 1230} 1231static inline int ata_eh_read_sense_success_ncq_log(struct ata_link *link) 1232{ 1233 return -EOPNOTSUPP; 1234} 1235static inline void ata_eh_analyze_ncq_error(struct ata_link *link) { } 1236#endif 1237extern int sata_link_debounce(struct ata_link *link, 1238 const unsigned int *params, unsigned long deadline); 1239extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy, 1240 bool spm_wakeup); 1241extern int ata_slave_link_init(struct ata_port *ap); 1242extern struct ata_port *ata_sas_port_alloc(struct ata_host *, 1243 struct ata_port_info *, struct Scsi_Host *); 1244extern void ata_port_probe(struct ata_port *ap); 1245extern int ata_sas_tport_add(struct device *parent, struct ata_port *ap); 1246extern void ata_sas_tport_delete(struct ata_port *ap); 1247extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); 1248extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap); 1249extern void ata_tf_to_fis(const struct ata_taskfile *tf, 1250 u8 pmp, int is_cmd, u8 *fis); 1251extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); 1252extern int ata_qc_complete_multiple(struct ata_port *ap, u64 qc_active); 1253extern bool sata_lpm_ignore_phy_events(struct ata_link *link); 1254extern int sata_async_notification(struct ata_port *ap); 1255 1256extern int ata_cable_40wire(struct ata_port *ap); 1257extern int ata_cable_80wire(struct ata_port *ap); 1258extern int ata_cable_sata(struct ata_port *ap); 1259extern int ata_cable_ignore(struct ata_port *ap); 1260extern int ata_cable_unknown(struct ata_port *ap); 1261 1262/* Timing helpers */ 1263extern unsigned int ata_pio_need_iordy(const struct ata_device *); 1264extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); 1265 1266/* PCI */ 1267#ifdef CONFIG_PCI 1268struct pci_dev; 1269 1270struct pci_bits { 1271 unsigned int reg; /* PCI config register to read */ 1272 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ 1273 unsigned long mask; 1274 unsigned long val; 1275}; 1276 1277extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); 1278extern void ata_pci_shutdown_one(struct pci_dev *pdev); 1279extern void ata_pci_remove_one(struct pci_dev *pdev); 1280 1281#ifdef CONFIG_PM 1282extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); 1283extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); 1284extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); 1285extern int ata_pci_device_resume(struct pci_dev *pdev); 1286#endif /* CONFIG_PM */ 1287#endif /* CONFIG_PCI */ 1288 1289struct platform_device; 1290 1291extern void ata_platform_remove_one(struct platform_device *pdev); 1292 1293/* 1294 * ACPI - drivers/ata/libata-acpi.c 1295 */ 1296#ifdef CONFIG_ATA_ACPI 1297static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1298{ 1299 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) 1300 return &ap->__acpi_init_gtm; 1301 return NULL; 1302} 1303int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); 1304int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); 1305unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, 1306 const struct ata_acpi_gtm *gtm); 1307int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm); 1308#else 1309static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1310{ 1311 return NULL; 1312} 1313 1314static inline int ata_acpi_stm(const struct ata_port *ap, 1315 struct ata_acpi_gtm *stm) 1316{ 1317 return -ENOSYS; 1318} 1319 1320static inline int ata_acpi_gtm(const struct ata_port *ap, 1321 struct ata_acpi_gtm *stm) 1322{ 1323 return -ENOSYS; 1324} 1325 1326static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, 1327 const struct ata_acpi_gtm *gtm) 1328{ 1329 return 0; 1330} 1331 1332static inline int ata_acpi_cbl_80wire(struct ata_port *ap, 1333 const struct ata_acpi_gtm *gtm) 1334{ 1335 return 0; 1336} 1337#endif 1338 1339/* 1340 * EH - drivers/ata/libata-eh.c 1341 */ 1342extern void ata_port_schedule_eh(struct ata_port *ap); 1343extern void ata_port_wait_eh(struct ata_port *ap); 1344extern int ata_link_abort(struct ata_link *link); 1345extern int ata_port_abort(struct ata_port *ap); 1346extern int ata_port_freeze(struct ata_port *ap); 1347 1348extern void ata_eh_freeze_port(struct ata_port *ap); 1349extern void ata_eh_thaw_port(struct ata_port *ap); 1350 1351extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); 1352extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); 1353 1354extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, 1355 ata_reset_fn_t softreset, ata_reset_fn_t hardreset, 1356 ata_postreset_fn_t postreset); 1357extern void ata_std_error_handler(struct ata_port *ap); 1358extern void ata_std_sched_eh(struct ata_port *ap); 1359extern void ata_std_end_eh(struct ata_port *ap); 1360extern int ata_link_nr_enabled(struct ata_link *link); 1361 1362/* 1363 * Base operations to inherit from and initializers for sht 1364 * 1365 * Operations 1366 * 1367 * base : Common to all libata drivers. 1368 * sata : SATA controllers w/ native interface. 1369 * pmp : SATA controllers w/ PMP support. 1370 * sff : SFF ATA controllers w/o BMDMA support. 1371 * bmdma : SFF ATA controllers w/ BMDMA support. 1372 * 1373 * sht initializers 1374 * 1375 * BASE : Common to all libata drivers. The user must set 1376 * sg_tablesize and dma_boundary. 1377 * PIO : SFF ATA controllers w/ only PIO support. 1378 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and 1379 * dma_boundary are set to BMDMA limits. 1380 * NCQ : SATA controllers supporting NCQ. The user must set 1381 * sg_tablesize, dma_boundary and can_queue. 1382 */ 1383extern const struct ata_port_operations ata_base_port_ops; 1384extern const struct ata_port_operations sata_port_ops; 1385extern const struct attribute_group *ata_common_sdev_groups[]; 1386 1387/* 1388 * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated 1389 * by the edge drivers. Because the 'module' field of sht must be the 1390 * edge driver's module reference, otherwise the driver can be unloaded 1391 * even if the scsi_device is being accessed. 1392 */ 1393#define __ATA_BASE_SHT(drv_name) \ 1394 .module = THIS_MODULE, \ 1395 .name = drv_name, \ 1396 .ioctl = ata_scsi_ioctl, \ 1397 ATA_SCSI_COMPAT_IOCTL \ 1398 .queuecommand = ata_scsi_queuecmd, \ 1399 .dma_need_drain = ata_scsi_dma_need_drain, \ 1400 .this_id = ATA_SHT_THIS_ID, \ 1401 .emulated = ATA_SHT_EMULATED, \ 1402 .proc_name = drv_name, \ 1403 .slave_alloc = ata_scsi_slave_alloc, \ 1404 .slave_destroy = ata_scsi_slave_destroy, \ 1405 .bios_param = ata_std_bios_param, \ 1406 .unlock_native_capacity = ata_scsi_unlock_native_capacity,\ 1407 .max_sectors = ATA_MAX_SECTORS_LBA48 1408 1409#define ATA_SUBBASE_SHT(drv_name) \ 1410 __ATA_BASE_SHT(drv_name), \ 1411 .can_queue = ATA_DEF_QUEUE, \ 1412 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \ 1413 .slave_configure = ata_scsi_slave_config 1414 1415#define ATA_SUBBASE_SHT_QD(drv_name, drv_qd) \ 1416 __ATA_BASE_SHT(drv_name), \ 1417 .can_queue = drv_qd, \ 1418 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \ 1419 .slave_configure = ata_scsi_slave_config 1420 1421#define ATA_BASE_SHT(drv_name) \ 1422 ATA_SUBBASE_SHT(drv_name), \ 1423 .sdev_groups = ata_common_sdev_groups 1424 1425#ifdef CONFIG_SATA_HOST 1426extern const struct attribute_group *ata_ncq_sdev_groups[]; 1427 1428#define ATA_NCQ_SHT(drv_name) \ 1429 ATA_SUBBASE_SHT(drv_name), \ 1430 .sdev_groups = ata_ncq_sdev_groups, \ 1431 .change_queue_depth = ata_scsi_change_queue_depth 1432 1433#define ATA_NCQ_SHT_QD(drv_name, drv_qd) \ 1434 ATA_SUBBASE_SHT_QD(drv_name, drv_qd), \ 1435 .sdev_groups = ata_ncq_sdev_groups, \ 1436 .change_queue_depth = ata_scsi_change_queue_depth 1437#endif 1438 1439/* 1440 * PMP helpers 1441 */ 1442#ifdef CONFIG_SATA_PMP 1443static inline bool sata_pmp_supported(struct ata_port *ap) 1444{ 1445 return ap->flags & ATA_FLAG_PMP; 1446} 1447 1448static inline bool sata_pmp_attached(struct ata_port *ap) 1449{ 1450 return ap->nr_pmp_links != 0; 1451} 1452 1453static inline bool ata_is_host_link(const struct ata_link *link) 1454{ 1455 return link == &link->ap->link || link == link->ap->slave_link; 1456} 1457#else /* CONFIG_SATA_PMP */ 1458static inline bool sata_pmp_supported(struct ata_port *ap) 1459{ 1460 return false; 1461} 1462 1463static inline bool sata_pmp_attached(struct ata_port *ap) 1464{ 1465 return false; 1466} 1467 1468static inline bool ata_is_host_link(const struct ata_link *link) 1469{ 1470 return true; 1471} 1472#endif /* CONFIG_SATA_PMP */ 1473 1474static inline int sata_srst_pmp(struct ata_link *link) 1475{ 1476 if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) 1477 return SATA_PMP_CTRL_PORT; 1478 return link->pmp; 1479} 1480 1481#define ata_port_printk(level, ap, fmt, ...) \ 1482 pr_ ## level ("ata%u: " fmt, (ap)->print_id, ##__VA_ARGS__) 1483 1484#define ata_port_err(ap, fmt, ...) \ 1485 ata_port_printk(err, ap, fmt, ##__VA_ARGS__) 1486#define ata_port_warn(ap, fmt, ...) \ 1487 ata_port_printk(warn, ap, fmt, ##__VA_ARGS__) 1488#define ata_port_notice(ap, fmt, ...) \ 1489 ata_port_printk(notice, ap, fmt, ##__VA_ARGS__) 1490#define ata_port_info(ap, fmt, ...) \ 1491 ata_port_printk(info, ap, fmt, ##__VA_ARGS__) 1492#define ata_port_dbg(ap, fmt, ...) \ 1493 ata_port_printk(debug, ap, fmt, ##__VA_ARGS__) 1494 1495#define ata_link_printk(level, link, fmt, ...) \ 1496do { \ 1497 if (sata_pmp_attached((link)->ap) || \ 1498 (link)->ap->slave_link) \ 1499 pr_ ## level ("ata%u.%02u: " fmt, \ 1500 (link)->ap->print_id, \ 1501 (link)->pmp, \ 1502 ##__VA_ARGS__); \ 1503 else \ 1504 pr_ ## level ("ata%u: " fmt, \ 1505 (link)->ap->print_id, \ 1506 ##__VA_ARGS__); \ 1507} while (0) 1508 1509#define ata_link_err(link, fmt, ...) \ 1510 ata_link_printk(err, link, fmt, ##__VA_ARGS__) 1511#define ata_link_warn(link, fmt, ...) \ 1512 ata_link_printk(warn, link, fmt, ##__VA_ARGS__) 1513#define ata_link_notice(link, fmt, ...) \ 1514 ata_link_printk(notice, link, fmt, ##__VA_ARGS__) 1515#define ata_link_info(link, fmt, ...) \ 1516 ata_link_printk(info, link, fmt, ##__VA_ARGS__) 1517#define ata_link_dbg(link, fmt, ...) \ 1518 ata_link_printk(debug, link, fmt, ##__VA_ARGS__) 1519 1520#define ata_dev_printk(level, dev, fmt, ...) \ 1521 pr_ ## level("ata%u.%02u: " fmt, \ 1522 (dev)->link->ap->print_id, \ 1523 (dev)->link->pmp + (dev)->devno, \ 1524 ##__VA_ARGS__) 1525 1526#define ata_dev_err(dev, fmt, ...) \ 1527 ata_dev_printk(err, dev, fmt, ##__VA_ARGS__) 1528#define ata_dev_warn(dev, fmt, ...) \ 1529 ata_dev_printk(warn, dev, fmt, ##__VA_ARGS__) 1530#define ata_dev_notice(dev, fmt, ...) \ 1531 ata_dev_printk(notice, dev, fmt, ##__VA_ARGS__) 1532#define ata_dev_info(dev, fmt, ...) \ 1533 ata_dev_printk(info, dev, fmt, ##__VA_ARGS__) 1534#define ata_dev_dbg(dev, fmt, ...) \ 1535 ata_dev_printk(debug, dev, fmt, ##__VA_ARGS__) 1536 1537void ata_print_version(const struct device *dev, const char *version); 1538 1539/* 1540 * ata_eh_info helpers 1541 */ 1542extern __printf(2, 3) 1543void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); 1544extern __printf(2, 3) 1545void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); 1546extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); 1547 1548static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) 1549{ 1550 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; 1551 ehi->flags |= ATA_EHI_HOTPLUGGED; 1552 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK; 1553 ehi->err_mask |= AC_ERR_ATA_BUS; 1554} 1555 1556/* 1557 * port description helpers 1558 */ 1559extern __printf(2, 3) 1560void ata_port_desc(struct ata_port *ap, const char *fmt, ...); 1561#ifdef CONFIG_PCI 1562extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, 1563 const char *name); 1564#endif 1565static inline void ata_port_desc_misc(struct ata_port *ap, int irq) 1566{ 1567 ata_port_desc(ap, "irq %d", irq); 1568 ata_port_desc(ap, "lpm-pol %d", ap->target_lpm_policy); 1569} 1570 1571static inline bool ata_tag_internal(unsigned int tag) 1572{ 1573 return tag == ATA_TAG_INTERNAL; 1574} 1575 1576static inline bool ata_tag_valid(unsigned int tag) 1577{ 1578 return tag < ATA_MAX_QUEUE || ata_tag_internal(tag); 1579} 1580 1581#define __ata_qc_for_each(ap, qc, tag, max_tag, fn) \ 1582 for ((tag) = 0; (tag) < (max_tag) && \ 1583 ({ qc = fn((ap), (tag)); 1; }); (tag)++) \ 1584 1585/* 1586 * Internal use only, iterate commands ignoring error handling and 1587 * status of 'qc'. 1588 */ 1589#define ata_qc_for_each_raw(ap, qc, tag) \ 1590 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, __ata_qc_from_tag) 1591 1592/* 1593 * Iterate all potential commands that can be queued 1594 */ 1595#define ata_qc_for_each(ap, qc, tag) \ 1596 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, ata_qc_from_tag) 1597 1598/* 1599 * Like ata_qc_for_each, but with the internal tag included 1600 */ 1601#define ata_qc_for_each_with_internal(ap, qc, tag) \ 1602 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE + 1, ata_qc_from_tag) 1603 1604/* 1605 * device helpers 1606 */ 1607static inline unsigned int ata_class_enabled(unsigned int class) 1608{ 1609 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || 1610 class == ATA_DEV_PMP || class == ATA_DEV_SEMB || 1611 class == ATA_DEV_ZAC; 1612} 1613 1614static inline unsigned int ata_class_disabled(unsigned int class) 1615{ 1616 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || 1617 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP || 1618 class == ATA_DEV_ZAC_UNSUP; 1619} 1620 1621static inline unsigned int ata_class_absent(unsigned int class) 1622{ 1623 return !ata_class_enabled(class) && !ata_class_disabled(class); 1624} 1625 1626static inline unsigned int ata_dev_enabled(const struct ata_device *dev) 1627{ 1628 return ata_class_enabled(dev->class); 1629} 1630 1631static inline unsigned int ata_dev_disabled(const struct ata_device *dev) 1632{ 1633 return ata_class_disabled(dev->class); 1634} 1635 1636static inline unsigned int ata_dev_absent(const struct ata_device *dev) 1637{ 1638 return ata_class_absent(dev->class); 1639} 1640 1641/* 1642 * link helpers 1643 */ 1644static inline int ata_link_max_devices(const struct ata_link *link) 1645{ 1646 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) 1647 return 2; 1648 return 1; 1649} 1650 1651static inline int ata_link_active(struct ata_link *link) 1652{ 1653 return ata_tag_valid(link->active_tag) || link->sactive; 1654} 1655 1656/* 1657 * Iterators 1658 * 1659 * ATA_LITER_* constants are used to select link iteration mode and 1660 * ATA_DITER_* device iteration mode. 1661 * 1662 * For a custom iteration directly using ata_{link|dev}_next(), if 1663 * @link or @dev, respectively, is NULL, the first element is 1664 * returned. @dev and @link can be any valid device or link and the 1665 * next element according to the iteration mode will be returned. 1666 * After the last element, NULL is returned. 1667 */ 1668enum ata_link_iter_mode { 1669 ATA_LITER_EDGE, /* if present, PMP links only; otherwise, 1670 * host link. no slave link */ 1671 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */ 1672 ATA_LITER_PMP_FIRST, /* PMP links followed by host link, 1673 * slave link still comes after host link */ 1674}; 1675 1676enum ata_dev_iter_mode { 1677 ATA_DITER_ENABLED, 1678 ATA_DITER_ENABLED_REVERSE, 1679 ATA_DITER_ALL, 1680 ATA_DITER_ALL_REVERSE, 1681}; 1682 1683extern struct ata_link *ata_link_next(struct ata_link *link, 1684 struct ata_port *ap, 1685 enum ata_link_iter_mode mode); 1686 1687extern struct ata_device *ata_dev_next(struct ata_device *dev, 1688 struct ata_link *link, 1689 enum ata_dev_iter_mode mode); 1690 1691/* 1692 * Shortcut notation for iterations 1693 * 1694 * ata_for_each_link() iterates over each link of @ap according to 1695 * @mode. @link points to the current link in the loop. @link is 1696 * NULL after loop termination. ata_for_each_dev() works the same way 1697 * except that it iterates over each device of @link. 1698 * 1699 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be 1700 * specified when using the following shorthand notations. Only the 1701 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be 1702 * specified. This not only increases brevity but also makes it 1703 * impossible to use ATA_LITER_* for device iteration or vice-versa. 1704 */ 1705#define ata_for_each_link(link, ap, mode) \ 1706 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \ 1707 (link) = ata_link_next((link), (ap), ATA_LITER_##mode)) 1708 1709#define ata_for_each_dev(dev, link, mode) \ 1710 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \ 1711 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode)) 1712 1713/** 1714 * ata_ncq_supported - Test whether NCQ is supported 1715 * @dev: ATA device to test 1716 * 1717 * LOCKING: 1718 * spin_lock_irqsave(host lock) 1719 * 1720 * RETURNS: 1721 * true if @dev supports NCQ, false otherwise. 1722 */ 1723static inline bool ata_ncq_supported(struct ata_device *dev) 1724{ 1725 if (!IS_ENABLED(CONFIG_SATA_HOST)) 1726 return false; 1727 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; 1728} 1729 1730/** 1731 * ata_ncq_enabled - Test whether NCQ is enabled 1732 * @dev: ATA device to test 1733 * 1734 * LOCKING: 1735 * spin_lock_irqsave(host lock) 1736 * 1737 * RETURNS: 1738 * true if NCQ is enabled for @dev, false otherwise. 1739 */ 1740static inline bool ata_ncq_enabled(struct ata_device *dev) 1741{ 1742 return ata_ncq_supported(dev) && !(dev->flags & ATA_DFLAG_NCQ_OFF); 1743} 1744 1745static inline bool ata_fpdma_dsm_supported(struct ata_device *dev) 1746{ 1747 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1748 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] & 1749 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM); 1750} 1751 1752static inline bool ata_fpdma_read_log_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_RD_LOG_OFFSET] & 1756 ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED); 1757} 1758 1759static inline bool ata_fpdma_zac_mgmt_in_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_ZAC_MGMT_OFFSET] & 1763 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED); 1764} 1765 1766static inline bool ata_fpdma_zac_mgmt_out_supported(struct ata_device *dev) 1767{ 1768 return (dev->ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET] & 1769 ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT); 1770} 1771 1772static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) 1773{ 1774 qc->tf.ctl |= ATA_NIEN; 1775} 1776 1777static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, 1778 unsigned int tag) 1779{ 1780 if (ata_tag_valid(tag)) 1781 return &ap->qcmd[tag]; 1782 return NULL; 1783} 1784 1785static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, 1786 unsigned int tag) 1787{ 1788 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); 1789 1790 if (unlikely(!qc)) 1791 return qc; 1792 1793 if ((qc->flags & (ATA_QCFLAG_ACTIVE | 1794 ATA_QCFLAG_EH)) == ATA_QCFLAG_ACTIVE) 1795 return qc; 1796 1797 return NULL; 1798} 1799 1800static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc) 1801{ 1802 return qc->nbytes - min(qc->extrabytes, qc->nbytes); 1803} 1804 1805static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) 1806{ 1807 memset(tf, 0, sizeof(*tf)); 1808 1809#ifdef CONFIG_ATA_SFF 1810 tf->ctl = dev->link->ap->ctl; 1811#else 1812 tf->ctl = ATA_DEVCTL_OBS; 1813#endif 1814 if (dev->devno == 0) 1815 tf->device = ATA_DEVICE_OBS; 1816 else 1817 tf->device = ATA_DEVICE_OBS | ATA_DEV1; 1818} 1819 1820static inline void ata_qc_reinit(struct ata_queued_cmd *qc) 1821{ 1822 qc->dma_dir = DMA_NONE; 1823 qc->sg = NULL; 1824 qc->flags = 0; 1825 qc->cursg = NULL; 1826 qc->cursg_ofs = 0; 1827 qc->nbytes = qc->extrabytes = qc->curbytes = 0; 1828 qc->n_elem = 0; 1829 qc->err_mask = 0; 1830 qc->sect_size = ATA_SECT_SIZE; 1831 1832 ata_tf_init(qc->dev, &qc->tf); 1833 1834 /* init result_tf such that it indicates normal completion */ 1835 qc->result_tf.command = ATA_DRDY; 1836 qc->result_tf.feature = 0; 1837} 1838 1839static inline int ata_try_flush_cache(const struct ata_device *dev) 1840{ 1841 return ata_id_wcache_enabled(dev->id) || 1842 ata_id_has_flush(dev->id) || 1843 ata_id_has_flush_ext(dev->id); 1844} 1845 1846static inline unsigned int ac_err_mask(u8 status) 1847{ 1848 if (status & (ATA_BUSY | ATA_DRQ)) 1849 return AC_ERR_HSM; 1850 if (status & (ATA_ERR | ATA_DF)) 1851 return AC_ERR_DEV; 1852 return 0; 1853} 1854 1855static inline unsigned int __ac_err_mask(u8 status) 1856{ 1857 unsigned int mask = ac_err_mask(status); 1858 if (mask == 0) 1859 return AC_ERR_OTHER; 1860 return mask; 1861} 1862 1863static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) 1864{ 1865 return *(struct ata_port **)&host->hostdata[0]; 1866} 1867 1868static inline int ata_check_ready(u8 status) 1869{ 1870 if (!(status & ATA_BUSY)) 1871 return 1; 1872 1873 /* 0xff indicates either no device or device not ready */ 1874 if (status == 0xff) 1875 return -ENODEV; 1876 1877 return 0; 1878} 1879 1880static inline unsigned long ata_deadline(unsigned long from_jiffies, 1881 unsigned int timeout_msecs) 1882{ 1883 return from_jiffies + msecs_to_jiffies(timeout_msecs); 1884} 1885 1886/* Don't open code these in drivers as there are traps. Firstly the range may 1887 change in future hardware and specs, secondly 0xFF means 'no DMA' but is 1888 > UDMA_0. Dyma ddreigiau */ 1889 1890static inline bool ata_using_mwdma(struct ata_device *adev) 1891{ 1892 return adev->dma_mode >= XFER_MW_DMA_0 && 1893 adev->dma_mode <= XFER_MW_DMA_4; 1894} 1895 1896static inline bool ata_using_udma(struct ata_device *adev) 1897{ 1898 return adev->dma_mode >= XFER_UDMA_0 && 1899 adev->dma_mode <= XFER_UDMA_7; 1900} 1901 1902static inline bool ata_dma_enabled(struct ata_device *adev) 1903{ 1904 return adev->dma_mode != 0xFF; 1905} 1906 1907/************************************************************************** 1908 * PATA timings - drivers/ata/libata-pata-timings.c 1909 */ 1910extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); 1911extern int ata_timing_compute(struct ata_device *, unsigned short, 1912 struct ata_timing *, int, int); 1913extern void ata_timing_merge(const struct ata_timing *, 1914 const struct ata_timing *, struct ata_timing *, 1915 unsigned int); 1916 1917/************************************************************************** 1918 * PMP - drivers/ata/libata-pmp.c 1919 */ 1920#ifdef CONFIG_SATA_PMP 1921 1922extern const struct ata_port_operations sata_pmp_port_ops; 1923 1924extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); 1925extern void sata_pmp_error_handler(struct ata_port *ap); 1926 1927#else /* CONFIG_SATA_PMP */ 1928 1929#define sata_pmp_port_ops sata_port_ops 1930#define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer 1931#define sata_pmp_error_handler ata_std_error_handler 1932 1933#endif /* CONFIG_SATA_PMP */ 1934 1935 1936/************************************************************************** 1937 * SFF - drivers/ata/libata-sff.c 1938 */ 1939#ifdef CONFIG_ATA_SFF 1940 1941extern const struct ata_port_operations ata_sff_port_ops; 1942extern const struct ata_port_operations ata_bmdma32_port_ops; 1943 1944/* PIO only, sg_tablesize and dma_boundary limits can be removed */ 1945#define ATA_PIO_SHT(drv_name) \ 1946 ATA_BASE_SHT(drv_name), \ 1947 .sg_tablesize = LIBATA_MAX_PRD, \ 1948 .dma_boundary = ATA_DMA_BOUNDARY 1949 1950extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); 1951extern u8 ata_sff_check_status(struct ata_port *ap); 1952extern void ata_sff_pause(struct ata_port *ap); 1953extern void ata_sff_dma_pause(struct ata_port *ap); 1954extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline); 1955extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); 1956extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf); 1957extern void ata_sff_exec_command(struct ata_port *ap, 1958 const struct ata_taskfile *tf); 1959extern unsigned int ata_sff_data_xfer(struct ata_queued_cmd *qc, 1960 unsigned char *buf, unsigned int buflen, int rw); 1961extern unsigned int ata_sff_data_xfer32(struct ata_queued_cmd *qc, 1962 unsigned char *buf, unsigned int buflen, int rw); 1963extern void ata_sff_irq_on(struct ata_port *ap); 1964extern void ata_sff_irq_clear(struct ata_port *ap); 1965extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, 1966 u8 status, int in_wq); 1967extern void ata_sff_queue_work(struct work_struct *work); 1968extern void ata_sff_queue_delayed_work(struct delayed_work *dwork, 1969 unsigned long delay); 1970extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay); 1971extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); 1972extern void ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); 1973extern unsigned int ata_sff_port_intr(struct ata_port *ap, 1974 struct ata_queued_cmd *qc); 1975extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); 1976extern void ata_sff_lost_interrupt(struct ata_port *ap); 1977extern void ata_sff_freeze(struct ata_port *ap); 1978extern void ata_sff_thaw(struct ata_port *ap); 1979extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline); 1980extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, 1981 u8 *r_err); 1982extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask, 1983 unsigned long deadline); 1984extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes, 1985 unsigned long deadline); 1986extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class, 1987 unsigned long deadline); 1988extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes); 1989extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc); 1990extern void ata_sff_error_handler(struct ata_port *ap); 1991extern void ata_sff_std_ports(struct ata_ioports *ioaddr); 1992#ifdef CONFIG_PCI 1993extern int ata_pci_sff_init_host(struct ata_host *host); 1994extern int ata_pci_sff_prepare_host(struct pci_dev *pdev, 1995 const struct ata_port_info * const * ppi, 1996 struct ata_host **r_host); 1997extern int ata_pci_sff_activate_host(struct ata_host *host, 1998 irq_handler_t irq_handler, 1999 const struct scsi_host_template *sht); 2000extern int ata_pci_sff_init_one(struct pci_dev *pdev, 2001 const struct ata_port_info * const * ppi, 2002 const struct scsi_host_template *sht, void *host_priv, int hflags); 2003#endif /* CONFIG_PCI */ 2004 2005#ifdef CONFIG_ATA_BMDMA 2006 2007extern const struct ata_port_operations ata_bmdma_port_ops; 2008 2009#define ATA_BMDMA_SHT(drv_name) \ 2010 ATA_BASE_SHT(drv_name), \ 2011 .sg_tablesize = LIBATA_MAX_PRD, \ 2012 .dma_boundary = ATA_DMA_BOUNDARY 2013 2014extern enum ata_completion_errors ata_bmdma_qc_prep(struct ata_queued_cmd *qc); 2015extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc); 2016extern enum ata_completion_errors ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc); 2017extern unsigned int ata_bmdma_port_intr(struct ata_port *ap, 2018 struct ata_queued_cmd *qc); 2019extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance); 2020extern void ata_bmdma_error_handler(struct ata_port *ap); 2021extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc); 2022extern void ata_bmdma_irq_clear(struct ata_port *ap); 2023extern void ata_bmdma_setup(struct ata_queued_cmd *qc); 2024extern void ata_bmdma_start(struct ata_queued_cmd *qc); 2025extern void ata_bmdma_stop(struct ata_queued_cmd *qc); 2026extern u8 ata_bmdma_status(struct ata_port *ap); 2027extern int ata_bmdma_port_start(struct ata_port *ap); 2028extern int ata_bmdma_port_start32(struct ata_port *ap); 2029 2030#ifdef CONFIG_PCI 2031extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); 2032extern void ata_pci_bmdma_init(struct ata_host *host); 2033extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev, 2034 const struct ata_port_info * const * ppi, 2035 struct ata_host **r_host); 2036extern int ata_pci_bmdma_init_one(struct pci_dev *pdev, 2037 const struct ata_port_info * const * ppi, 2038 const struct scsi_host_template *sht, 2039 void *host_priv, int hflags); 2040#endif /* CONFIG_PCI */ 2041#endif /* CONFIG_ATA_BMDMA */ 2042 2043/** 2044 * ata_sff_busy_wait - Wait for a port status register 2045 * @ap: Port to wait for. 2046 * @bits: bits that must be clear 2047 * @max: number of 10uS waits to perform 2048 * 2049 * Waits up to max*10 microseconds for the selected bits in the port's 2050 * status register to be cleared. 2051 * Returns final value of status register. 2052 * 2053 * LOCKING: 2054 * Inherited from caller. 2055 */ 2056static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits, 2057 unsigned int max) 2058{ 2059 u8 status; 2060 2061 do { 2062 udelay(10); 2063 status = ap->ops->sff_check_status(ap); 2064 max--; 2065 } while (status != 0xff && (status & bits) && (max > 0)); 2066 2067 return status; 2068} 2069 2070/** 2071 * ata_wait_idle - Wait for a port to be idle. 2072 * @ap: Port to wait for. 2073 * 2074 * Waits up to 10ms for port's BUSY and DRQ signals to clear. 2075 * Returns final value of status register. 2076 * 2077 * LOCKING: 2078 * Inherited from caller. 2079 */ 2080static inline u8 ata_wait_idle(struct ata_port *ap) 2081{ 2082 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); 2083 2084 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) 2085 ata_port_dbg(ap, "abnormal Status 0x%X\n", status); 2086 2087 return status; 2088} 2089#endif /* CONFIG_ATA_SFF */ 2090 2091#endif /* __LINUX_LIBATA_H__ */ 2092