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_DEBUG /* debugging output */ 43 #undef ATA_VERBOSE_DEBUG /* yet more debugging output */ 44 #undef ATA_IRQ_TRAP /* define to ack screaming irqs */ 45 #undef ATA_NDEBUG /* define to disable quick runtime checks */ 46 47 48 /* note: prints function name for you */ 49 #ifdef ATA_DEBUG 50 #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) 51 #ifdef ATA_VERBOSE_DEBUG 52 #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) 53 #else 54 #define VPRINTK(fmt, args...) 55 #endif /* ATA_VERBOSE_DEBUG */ 56 #else 57 #define DPRINTK(fmt, args...) 58 #define VPRINTK(fmt, args...) 59 #endif /* ATA_DEBUG */ 60 61 #define ata_print_version_once(dev, version) \ 62 ({ \ 63 static bool __print_once; \ 64 \ 65 if (!__print_once) { \ 66 __print_once = true; \ 67 ata_print_version(dev, version); \ 68 } \ 69 }) 70 71 /* NEW: debug levels */ 72 #define HAVE_LIBATA_MSG 1 73 74 enum { 75 ATA_MSG_DRV = 0x0001, 76 ATA_MSG_INFO = 0x0002, 77 ATA_MSG_PROBE = 0x0004, 78 ATA_MSG_WARN = 0x0008, 79 ATA_MSG_MALLOC = 0x0010, 80 ATA_MSG_CTL = 0x0020, 81 ATA_MSG_INTR = 0x0040, 82 ATA_MSG_ERR = 0x0080, 83 }; 84 85 #define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV) 86 #define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO) 87 #define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE) 88 #define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN) 89 #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC) 90 #define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL) 91 #define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR) 92 #define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR) 93 94 static inline u32 ata_msg_init(int dval, int default_msg_enable_bits) 95 { 96 if (dval < 0 || dval >= (sizeof(u32) * 8)) 97 return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */ 98 if (!dval) 99 return 0; 100 return (1 << dval) - 1; 101 } 102 103 /* defines only for the constants which don't work well as enums */ 104 #define ATA_TAG_POISON 0xfafbfcfdU 105 106 enum { 107 /* various global constants */ 108 LIBATA_MAX_PRD = ATA_MAX_PRD / 2, 109 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */ 110 ATA_DEF_QUEUE = 1, 111 ATA_MAX_QUEUE = 32, 112 ATA_TAG_INTERNAL = ATA_MAX_QUEUE, 113 ATA_SHORT_PAUSE = 16, 114 115 ATAPI_MAX_DRAIN = 16 << 10, 116 117 ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1, 118 119 ATA_SHT_EMULATED = 1, 120 ATA_SHT_THIS_ID = -1, 121 122 /* struct ata_taskfile flags */ 123 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */ 124 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */ 125 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */ 126 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */ 127 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */ 128 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */ 129 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */ 130 131 /* struct ata_device stuff */ 132 ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */ 133 ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */ 134 ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */ 135 ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */ 136 ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */ 137 ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ 138 ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ 139 ATA_DFLAG_AN = (1 << 7), /* AN configured */ 140 ATA_DFLAG_TRUSTED = (1 << 8), /* device supports trusted send/recv */ 141 ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */ 142 ATA_DFLAG_CFG_MASK = (1 << 12) - 1, 143 144 ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */ 145 ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */ 146 ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */ 147 ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */ 148 ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */ 149 ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */ 150 ATA_DFLAG_NCQ_SEND_RECV = (1 << 19), /* device supports NCQ SEND and RECV */ 151 ATA_DFLAG_NCQ_PRIO = (1 << 20), /* device supports NCQ priority */ 152 ATA_DFLAG_NCQ_PRIO_ENABLE = (1 << 21), /* Priority cmds sent to dev */ 153 ATA_DFLAG_INIT_MASK = (1 << 24) - 1, 154 155 ATA_DFLAG_DETACH = (1 << 24), 156 ATA_DFLAG_DETACHED = (1 << 25), 157 158 ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */ 159 ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */ 160 ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */ 161 ATA_DFLAG_D_SENSE = (1 << 29), /* Descriptor sense requested */ 162 ATA_DFLAG_ZAC = (1 << 30), /* ZAC device */ 163 164 ATA_DEV_UNKNOWN = 0, /* unknown device */ 165 ATA_DEV_ATA = 1, /* ATA device */ 166 ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ 167 ATA_DEV_ATAPI = 3, /* ATAPI device */ 168 ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ 169 ATA_DEV_PMP = 5, /* SATA port multiplier */ 170 ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ 171 ATA_DEV_SEMB = 7, /* SEMB */ 172 ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ 173 ATA_DEV_ZAC = 9, /* ZAC device */ 174 ATA_DEV_ZAC_UNSUP = 10, /* ZAC device (unsupported) */ 175 ATA_DEV_NONE = 11, /* no device */ 176 177 /* struct ata_link flags */ 178 /* NOTE: struct ata_force_param currently stores lflags in u16 */ 179 ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */ 180 ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ 181 ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ 182 ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ 183 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, 184 ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ 185 ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ 186 ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */ 187 ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */ 188 ATA_LFLAG_RST_ONCE = (1 << 9), /* limit recovery to one reset */ 189 ATA_LFLAG_CHANGED = (1 << 10), /* LPM state changed on this link */ 190 ATA_LFLAG_NO_DB_DELAY = (1 << 11), /* no debounce delay on link resume */ 191 192 /* struct ata_port flags */ 193 ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ 194 /* (doesn't imply presence) */ 195 ATA_FLAG_SATA = (1 << 1), 196 ATA_FLAG_NO_LPM = (1 << 2), /* host not happy with LPM */ 197 ATA_FLAG_NO_LOG_PAGE = (1 << 5), /* do not issue log page read */ 198 ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ 199 ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ 200 ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ 201 ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD 202 * doesn't handle PIO interrupts */ 203 ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ 204 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */ 205 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */ 206 ATA_FLAG_DEBUGMSG = (1 << 13), 207 ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */ 208 ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ 209 ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ 210 ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ 211 ATA_FLAG_AN = (1 << 18), /* controller supports AN */ 212 ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ 213 ATA_FLAG_FPDMA_AUX = (1 << 20), /* controller supports H2DFIS aux field */ 214 ATA_FLAG_EM = (1 << 21), /* driver supports enclosure 215 * management */ 216 ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity 217 * led */ 218 ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */ 219 ATA_FLAG_SAS_HOST = (1 << 24), /* SAS host */ 220 221 /* bits 24:31 of ap->flags are reserved for LLD specific flags */ 222 223 224 /* struct ata_port pflags */ 225 ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ 226 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ 227 ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ 228 ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ 229 ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ 230 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ 231 ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ 232 ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ 233 ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */ 234 ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */ 235 236 ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ 237 ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ 238 ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */ 239 240 ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */ 241 ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */ 242 ATA_PFLAG_EXTERNAL = (1 << 22), /* eSATA/external port */ 243 244 /* struct ata_queued_cmd flags */ 245 ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ 246 ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */ 247 ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ 248 ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ 249 ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ 250 ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */ 251 ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */ 252 253 ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */ 254 ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ 255 ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ 256 257 /* host set flags */ 258 ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ 259 ATA_HOST_STARTED = (1 << 1), /* Host started */ 260 ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */ 261 ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */ 262 263 /* bits 24:31 of host->flags are reserved for LLD specific flags */ 264 265 /* various lengths of time */ 266 ATA_TMOUT_BOOT = 30000, /* heuristic */ 267 ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */ 268 ATA_TMOUT_INTERNAL_QUICK = 5000, 269 ATA_TMOUT_MAX_PARK = 30000, 270 271 /* 272 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s 273 * is too much without parallel probing. Use 2s if parallel 274 * probing is available, 800ms otherwise. 275 */ 276 ATA_TMOUT_FF_WAIT_LONG = 2000, 277 ATA_TMOUT_FF_WAIT = 800, 278 279 /* Spec mandates to wait for ">= 2ms" before checking status 280 * after reset. We wait 150ms, because that was the magic 281 * delay used for ATAPI devices in Hale Landis's ATADRVR, for 282 * the period of time between when the ATA command register is 283 * written, and then status is checked. Because waiting for 284 * "a while" before checking status is fine, post SRST, we 285 * perform this magic delay here as well. 286 * 287 * Old drivers/ide uses the 2mS rule and then waits for ready. 288 */ 289 ATA_WAIT_AFTER_RESET = 150, 290 291 /* If PMP is supported, we have to do follow-up SRST. As some 292 * PMPs don't send D2H Reg FIS after hardreset, LLDs are 293 * advised to wait only for the following duration before 294 * doing SRST. 295 */ 296 ATA_TMOUT_PMP_SRST_WAIT = 5000, 297 298 /* When the LPM policy is set to ATA_LPM_MAX_POWER, there might 299 * be a spurious PHY event, so ignore the first PHY event that 300 * occurs within 10s after the policy change. 301 */ 302 ATA_TMOUT_SPURIOUS_PHY = 10000, 303 304 /* ATA bus states */ 305 BUS_UNKNOWN = 0, 306 BUS_DMA = 1, 307 BUS_IDLE = 2, 308 BUS_NOINTR = 3, 309 BUS_NODATA = 4, 310 BUS_TIMER = 5, 311 BUS_PIO = 6, 312 BUS_EDD = 7, 313 BUS_IDENTIFY = 8, 314 BUS_PACKET = 9, 315 316 /* SATA port states */ 317 PORT_UNKNOWN = 0, 318 PORT_ENABLED = 1, 319 PORT_DISABLED = 2, 320 321 /* encoding various smaller bitmaps into a single 322 * unsigned long bitmap 323 */ 324 ATA_NR_PIO_MODES = 7, 325 ATA_NR_MWDMA_MODES = 5, 326 ATA_NR_UDMA_MODES = 8, 327 328 ATA_SHIFT_PIO = 0, 329 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES, 330 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES, 331 ATA_SHIFT_PRIO = 6, 332 333 ATA_PRIO_HIGH = 2, 334 /* size of buffer to pad xfers ending on unaligned boundaries */ 335 ATA_DMA_PAD_SZ = 4, 336 337 /* ering size */ 338 ATA_ERING_SIZE = 32, 339 340 /* return values for ->qc_defer */ 341 ATA_DEFER_LINK = 1, 342 ATA_DEFER_PORT = 2, 343 344 /* desc_len for ata_eh_info and context */ 345 ATA_EH_DESC_LEN = 80, 346 347 /* reset / recovery action types */ 348 ATA_EH_REVALIDATE = (1 << 0), 349 ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */ 350 ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */ 351 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, 352 ATA_EH_ENABLE_LINK = (1 << 3), 353 ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */ 354 355 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK, 356 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET | 357 ATA_EH_ENABLE_LINK, 358 359 /* ata_eh_info->flags */ 360 ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ 361 ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ 362 ATA_EHI_QUIET = (1 << 3), /* be quiet */ 363 ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */ 364 365 ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ 366 ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ 367 ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ 368 ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ 369 ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */ 370 371 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, 372 373 /* mask of flags to transfer *to* the slave link */ 374 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, 375 376 /* max tries if error condition is still set after ->error_handler */ 377 ATA_EH_MAX_TRIES = 5, 378 379 /* sometimes resuming a link requires several retries */ 380 ATA_LINK_RESUME_TRIES = 5, 381 382 /* how hard are we gonna try to probe/recover devices */ 383 ATA_PROBE_MAX_TRIES = 3, 384 ATA_EH_DEV_TRIES = 3, 385 ATA_EH_PMP_TRIES = 5, 386 ATA_EH_PMP_LINK_TRIES = 3, 387 388 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */ 389 390 /* This should match the actual table size of 391 * ata_eh_cmd_timeout_table in libata-eh.c. 392 */ 393 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6, 394 395 /* Horkage types. May be set by libata or controller on drives 396 (some horkage may be drive/controller pair dependent */ 397 398 ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ 399 ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ 400 ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ 401 ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ 402 ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ 403 ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */ 404 ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ 405 ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */ 406 ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */ 407 ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */ 408 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands 409 not multiple of 16 bytes */ 410 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */ 411 ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */ 412 ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */ 413 ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */ 414 ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */ 415 ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17), /* Set max sects to 65535 */ 416 ATA_HORKAGE_ATAPI_DMADIR = (1 << 18), /* device requires dmadir */ 417 ATA_HORKAGE_NO_NCQ_TRIM = (1 << 19), /* don't use queued TRIM */ 418 ATA_HORKAGE_NOLPM = (1 << 20), /* don't use LPM */ 419 ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21), /* some WDs have broken LPM */ 420 ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),/* guarantees zero after trim */ 421 ATA_HORKAGE_NO_DMA_LOG = (1 << 23), /* don't use DMA for log read */ 422 ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */ 423 ATA_HORKAGE_MAX_SEC_1024 = (1 << 25), /* Limit max sects to 1024 */ 424 ATA_HORKAGE_MAX_TRIM_128M = (1 << 26), /* Limit max trim size to 128M */ 425 426 /* DMA mask for user DMA control: User visible values; DO NOT 427 renumber */ 428 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ 429 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ 430 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ 431 432 /* ATAPI command types */ 433 ATAPI_READ = 0, /* READs */ 434 ATAPI_WRITE = 1, /* WRITEs */ 435 ATAPI_READ_CD = 2, /* READ CD [MSF] */ 436 ATAPI_PASS_THRU = 3, /* SAT pass-thru */ 437 ATAPI_MISC = 4, /* the rest */ 438 439 /* Timing constants */ 440 ATA_TIMING_SETUP = (1 << 0), 441 ATA_TIMING_ACT8B = (1 << 1), 442 ATA_TIMING_REC8B = (1 << 2), 443 ATA_TIMING_CYC8B = (1 << 3), 444 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | 445 ATA_TIMING_CYC8B, 446 ATA_TIMING_ACTIVE = (1 << 4), 447 ATA_TIMING_RECOVER = (1 << 5), 448 ATA_TIMING_DMACK_HOLD = (1 << 6), 449 ATA_TIMING_CYCLE = (1 << 7), 450 ATA_TIMING_UDMA = (1 << 8), 451 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | 452 ATA_TIMING_REC8B | ATA_TIMING_CYC8B | 453 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | 454 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE | 455 ATA_TIMING_UDMA, 456 457 /* ACPI constants */ 458 ATA_ACPI_FILTER_SETXFER = 1 << 0, 459 ATA_ACPI_FILTER_LOCK = 1 << 1, 460 ATA_ACPI_FILTER_DIPM = 1 << 2, 461 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */ 462 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */ 463 464 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER | 465 ATA_ACPI_FILTER_LOCK | 466 ATA_ACPI_FILTER_DIPM, 467 }; 468 469 enum ata_xfer_mask { 470 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1) 471 << ATA_SHIFT_PIO, 472 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1) 473 << ATA_SHIFT_MWDMA, 474 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1) 475 << ATA_SHIFT_UDMA, 476 }; 477 478 enum hsm_task_states { 479 HSM_ST_IDLE, /* no command on going */ 480 HSM_ST_FIRST, /* (waiting the device to) 481 write CDB or first data block */ 482 HSM_ST, /* (waiting the device to) transfer data */ 483 HSM_ST_LAST, /* (waiting the device to) complete command */ 484 HSM_ST_ERR, /* error */ 485 }; 486 487 enum ata_completion_errors { 488 AC_ERR_OK = 0, /* no error */ 489 AC_ERR_DEV = (1 << 0), /* device reported error */ 490 AC_ERR_HSM = (1 << 1), /* host state machine violation */ 491 AC_ERR_TIMEOUT = (1 << 2), /* timeout */ 492 AC_ERR_MEDIA = (1 << 3), /* media error */ 493 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ 494 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ 495 AC_ERR_SYSTEM = (1 << 6), /* system error */ 496 AC_ERR_INVALID = (1 << 7), /* invalid argument */ 497 AC_ERR_OTHER = (1 << 8), /* unknown */ 498 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ 499 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ 500 }; 501 502 /* 503 * Link power management policy: If you alter this, you also need to 504 * alter libata-scsi.c (for the ascii descriptions) 505 */ 506 enum ata_lpm_policy { 507 ATA_LPM_UNKNOWN, 508 ATA_LPM_MAX_POWER, 509 ATA_LPM_MED_POWER, 510 ATA_LPM_MED_POWER_WITH_DIPM, /* Med power + DIPM as win IRST does */ 511 ATA_LPM_MIN_POWER_WITH_PARTIAL, /* Min Power + partial and slumber */ 512 ATA_LPM_MIN_POWER, /* Min power + no partial (slumber only) */ 513 }; 514 515 enum ata_lpm_hints { 516 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */ 517 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */ 518 ATA_LPM_WAKE_ONLY = (1 << 2), /* only wake up link */ 519 }; 520 521 /* forward declarations */ 522 struct scsi_device; 523 struct ata_port_operations; 524 struct ata_port; 525 struct ata_link; 526 struct ata_queued_cmd; 527 528 /* typedefs */ 529 typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); 530 typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); 531 typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, 532 unsigned long deadline); 533 typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); 534 535 extern struct device_attribute dev_attr_unload_heads; 536 #ifdef CONFIG_SATA_HOST 537 extern struct device_attribute dev_attr_link_power_management_policy; 538 extern struct device_attribute dev_attr_ncq_prio_enable; 539 extern struct device_attribute dev_attr_em_message_type; 540 extern struct device_attribute dev_attr_em_message; 541 extern struct device_attribute dev_attr_sw_activity; 542 #endif 543 544 enum sw_activity { 545 OFF, 546 BLINK_ON, 547 BLINK_OFF, 548 }; 549 550 struct ata_taskfile { 551 unsigned long flags; /* ATA_TFLAG_xxx */ 552 u8 protocol; /* ATA_PROT_xxx */ 553 554 u8 ctl; /* control reg */ 555 556 u8 hob_feature; /* additional data */ 557 u8 hob_nsect; /* to support LBA48 */ 558 u8 hob_lbal; 559 u8 hob_lbam; 560 u8 hob_lbah; 561 562 u8 feature; 563 u8 nsect; 564 u8 lbal; 565 u8 lbam; 566 u8 lbah; 567 568 u8 device; 569 570 u8 command; /* IO operation */ 571 572 u32 auxiliary; /* auxiliary field */ 573 /* from SATA 3.1 and */ 574 /* ATA-8 ACS-3 */ 575 }; 576 577 #ifdef CONFIG_ATA_SFF 578 struct ata_ioports { 579 void __iomem *cmd_addr; 580 void __iomem *data_addr; 581 void __iomem *error_addr; 582 void __iomem *feature_addr; 583 void __iomem *nsect_addr; 584 void __iomem *lbal_addr; 585 void __iomem *lbam_addr; 586 void __iomem *lbah_addr; 587 void __iomem *device_addr; 588 void __iomem *status_addr; 589 void __iomem *command_addr; 590 void __iomem *altstatus_addr; 591 void __iomem *ctl_addr; 592 #ifdef CONFIG_ATA_BMDMA 593 void __iomem *bmdma_addr; 594 #endif /* CONFIG_ATA_BMDMA */ 595 void __iomem *scr_addr; 596 }; 597 #endif /* CONFIG_ATA_SFF */ 598 599 struct ata_host { 600 spinlock_t lock; 601 struct device *dev; 602 void __iomem * const *iomap; 603 unsigned int n_ports; 604 unsigned int n_tags; /* nr of NCQ tags */ 605 void *private_data; 606 struct ata_port_operations *ops; 607 unsigned long flags; 608 struct kref kref; 609 610 struct mutex eh_mutex; 611 struct task_struct *eh_owner; 612 613 struct ata_port *simplex_claimed; /* channel owning the DMA */ 614 struct ata_port *ports[]; 615 }; 616 617 struct ata_queued_cmd { 618 struct ata_port *ap; 619 struct ata_device *dev; 620 621 struct scsi_cmnd *scsicmd; 622 void (*scsidone)(struct scsi_cmnd *); 623 624 struct ata_taskfile tf; 625 u8 cdb[ATAPI_CDB_LEN]; 626 627 unsigned long flags; /* ATA_QCFLAG_xxx */ 628 unsigned int tag; /* libata core tag */ 629 unsigned int hw_tag; /* driver tag */ 630 unsigned int n_elem; 631 unsigned int orig_n_elem; 632 633 int dma_dir; 634 635 unsigned int sect_size; 636 637 unsigned int nbytes; 638 unsigned int extrabytes; 639 unsigned int curbytes; 640 641 struct scatterlist sgent; 642 643 struct scatterlist *sg; 644 645 struct scatterlist *cursg; 646 unsigned int cursg_ofs; 647 648 unsigned int err_mask; 649 struct ata_taskfile result_tf; 650 ata_qc_cb_t complete_fn; 651 652 void *private_data; 653 void *lldd_task; 654 }; 655 656 struct ata_port_stats { 657 unsigned long unhandled_irq; 658 unsigned long idle_irq; 659 unsigned long rw_reqbuf; 660 }; 661 662 struct ata_ering_entry { 663 unsigned int eflags; 664 unsigned int err_mask; 665 u64 timestamp; 666 }; 667 668 struct ata_ering { 669 int cursor; 670 struct ata_ering_entry ring[ATA_ERING_SIZE]; 671 }; 672 673 struct ata_device { 674 struct ata_link *link; 675 unsigned int devno; /* 0 or 1 */ 676 unsigned int horkage; /* List of broken features */ 677 unsigned long flags; /* ATA_DFLAG_xxx */ 678 struct scsi_device *sdev; /* attached SCSI device */ 679 void *private_data; 680 #ifdef CONFIG_ATA_ACPI 681 union acpi_object *gtf_cache; 682 unsigned int gtf_filter; 683 #endif 684 #ifdef CONFIG_SATA_ZPODD 685 void *zpodd; 686 #endif 687 struct device tdev; 688 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */ 689 u64 n_sectors; /* size of device, if ATA */ 690 u64 n_native_sectors; /* native size, if ATA */ 691 unsigned int class; /* ATA_DEV_xxx */ 692 unsigned long unpark_deadline; 693 694 u8 pio_mode; 695 u8 dma_mode; 696 u8 xfer_mode; 697 unsigned int xfer_shift; /* ATA_SHIFT_xxx */ 698 699 unsigned int multi_count; /* sectors count for 700 READ/WRITE MULTIPLE */ 701 unsigned int max_sectors; /* per-device max sectors */ 702 unsigned int cdb_len; 703 704 /* per-dev xfer mask */ 705 unsigned long pio_mask; 706 unsigned long mwdma_mask; 707 unsigned long udma_mask; 708 709 /* for CHS addressing */ 710 u16 cylinders; /* Number of cylinders */ 711 u16 heads; /* Number of heads */ 712 u16 sectors; /* Number of sectors per track */ 713 714 union { 715 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ 716 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ 717 } ____cacheline_aligned; 718 719 /* DEVSLP Timing Variables from Identify Device Data Log */ 720 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE]; 721 722 /* NCQ send and receive log subcommand support */ 723 u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE]; 724 u8 ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_SIZE]; 725 726 /* ZAC zone configuration */ 727 u32 zac_zoned_cap; 728 u32 zac_zones_optimal_open; 729 u32 zac_zones_optimal_nonseq; 730 u32 zac_zones_max_open; 731 732 /* error history */ 733 int spdn_cnt; 734 /* ering is CLEAR_END, read comment above CLEAR_END */ 735 struct ata_ering ering; 736 }; 737 738 /* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are 739 * cleared to zero on ata_dev_init(). 740 */ 741 #define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors) 742 #define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering) 743 744 struct ata_eh_info { 745 struct ata_device *dev; /* offending device */ 746 u32 serror; /* SError from LLDD */ 747 unsigned int err_mask; /* port-wide err_mask */ 748 unsigned int action; /* ATA_EH_* action mask */ 749 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ 750 unsigned int flags; /* ATA_EHI_* flags */ 751 752 unsigned int probe_mask; 753 754 char desc[ATA_EH_DESC_LEN]; 755 int desc_len; 756 }; 757 758 struct ata_eh_context { 759 struct ata_eh_info i; 760 int tries[ATA_MAX_DEVICES]; 761 int cmd_timeout_idx[ATA_MAX_DEVICES] 762 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE]; 763 unsigned int classes[ATA_MAX_DEVICES]; 764 unsigned int did_probe_mask; 765 unsigned int unloaded_mask; 766 unsigned int saved_ncq_enabled; 767 u8 saved_xfer_mode[ATA_MAX_DEVICES]; 768 /* timestamp for the last reset attempt or success */ 769 unsigned long last_reset; 770 }; 771 772 struct ata_acpi_drive 773 { 774 u32 pio; 775 u32 dma; 776 } __packed; 777 778 struct ata_acpi_gtm { 779 struct ata_acpi_drive drive[2]; 780 u32 flags; 781 } __packed; 782 783 struct ata_link { 784 struct ata_port *ap; 785 int pmp; /* port multiplier port # */ 786 787 struct device tdev; 788 unsigned int active_tag; /* active tag on this link */ 789 u32 sactive; /* active NCQ commands */ 790 791 unsigned int flags; /* ATA_LFLAG_xxx */ 792 793 u32 saved_scontrol; /* SControl on probe */ 794 unsigned int hw_sata_spd_limit; 795 unsigned int sata_spd_limit; 796 unsigned int sata_spd; /* current SATA PHY speed */ 797 enum ata_lpm_policy lpm_policy; 798 799 /* record runtime error info, protected by host_set lock */ 800 struct ata_eh_info eh_info; 801 /* EH context */ 802 struct ata_eh_context eh_context; 803 804 struct ata_device device[ATA_MAX_DEVICES]; 805 806 unsigned long last_lpm_change; /* when last LPM change happened */ 807 }; 808 #define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag) 809 #define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0]) 810 811 struct ata_port { 812 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ 813 struct ata_port_operations *ops; 814 spinlock_t *lock; 815 /* Flags owned by the EH context. Only EH should touch these once the 816 port is active */ 817 unsigned long flags; /* ATA_FLAG_xxx */ 818 /* Flags that change dynamically, protected by ap->lock */ 819 unsigned int pflags; /* ATA_PFLAG_xxx */ 820 unsigned int print_id; /* user visible unique port ID */ 821 unsigned int local_port_no; /* host local port num */ 822 unsigned int port_no; /* 0 based port no. inside the host */ 823 824 #ifdef CONFIG_ATA_SFF 825 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ 826 u8 ctl; /* cache of ATA control register */ 827 u8 last_ctl; /* Cache last written value */ 828 struct ata_link* sff_pio_task_link; /* link currently used */ 829 struct delayed_work sff_pio_task; 830 #ifdef CONFIG_ATA_BMDMA 831 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */ 832 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */ 833 #endif /* CONFIG_ATA_BMDMA */ 834 #endif /* CONFIG_ATA_SFF */ 835 836 unsigned int pio_mask; 837 unsigned int mwdma_mask; 838 unsigned int udma_mask; 839 unsigned int cbl; /* cable type; ATA_CBL_xxx */ 840 841 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE + 1]; 842 unsigned long sas_tag_allocated; /* for sas tag allocation only */ 843 u64 qc_active; 844 int nr_active_links; /* #links with active qcs */ 845 unsigned int sas_last_tag; /* track next tag hw expects */ 846 847 struct ata_link link; /* host default link */ 848 struct ata_link *slave_link; /* see ata_slave_link_init() */ 849 850 int nr_pmp_links; /* nr of available PMP links */ 851 struct ata_link *pmp_link; /* array of PMP links */ 852 struct ata_link *excl_link; /* for PMP qc exclusion */ 853 854 struct ata_port_stats stats; 855 struct ata_host *host; 856 struct device *dev; 857 struct device tdev; 858 859 struct mutex scsi_scan_mutex; 860 struct delayed_work hotplug_task; 861 struct work_struct scsi_rescan_task; 862 863 unsigned int hsm_task_state; 864 865 u32 msg_enable; 866 struct list_head eh_done_q; 867 wait_queue_head_t eh_wait_q; 868 int eh_tries; 869 struct completion park_req_pending; 870 871 pm_message_t pm_mesg; 872 enum ata_lpm_policy target_lpm_policy; 873 874 struct timer_list fastdrain_timer; 875 unsigned long fastdrain_cnt; 876 877 async_cookie_t cookie; 878 879 int em_message_type; 880 void *private_data; 881 882 #ifdef CONFIG_ATA_ACPI 883 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */ 884 #endif 885 /* owned by EH */ 886 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned; 887 }; 888 889 /* The following initializer overrides a method to NULL whether one of 890 * its parent has the method defined or not. This is equivalent to 891 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant 892 * expression and thus can't be used as an initializer. 893 */ 894 #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT) 895 896 struct ata_port_operations { 897 /* 898 * Command execution 899 */ 900 int (*qc_defer)(struct ata_queued_cmd *qc); 901 int (*check_atapi_dma)(struct ata_queued_cmd *qc); 902 enum ata_completion_errors (*qc_prep)(struct ata_queued_cmd *qc); 903 unsigned int (*qc_issue)(struct ata_queued_cmd *qc); 904 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc); 905 906 /* 907 * Configuration and exception handling 908 */ 909 int (*cable_detect)(struct ata_port *ap); 910 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask); 911 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev); 912 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev); 913 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev); 914 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id); 915 916 void (*dev_config)(struct ata_device *dev); 917 918 void (*freeze)(struct ata_port *ap); 919 void (*thaw)(struct ata_port *ap); 920 ata_prereset_fn_t prereset; 921 ata_reset_fn_t softreset; 922 ata_reset_fn_t hardreset; 923 ata_postreset_fn_t postreset; 924 ata_prereset_fn_t pmp_prereset; 925 ata_reset_fn_t pmp_softreset; 926 ata_reset_fn_t pmp_hardreset; 927 ata_postreset_fn_t pmp_postreset; 928 void (*error_handler)(struct ata_port *ap); 929 void (*lost_interrupt)(struct ata_port *ap); 930 void (*post_internal_cmd)(struct ata_queued_cmd *qc); 931 void (*sched_eh)(struct ata_port *ap); 932 void (*end_eh)(struct ata_port *ap); 933 934 /* 935 * Optional features 936 */ 937 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val); 938 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val); 939 void (*pmp_attach)(struct ata_port *ap); 940 void (*pmp_detach)(struct ata_port *ap); 941 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy, 942 unsigned hints); 943 944 /* 945 * Start, stop, suspend and resume 946 */ 947 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg); 948 int (*port_resume)(struct ata_port *ap); 949 int (*port_start)(struct ata_port *ap); 950 void (*port_stop)(struct ata_port *ap); 951 void (*host_stop)(struct ata_host *host); 952 953 #ifdef CONFIG_ATA_SFF 954 /* 955 * SFF / taskfile oriented ops 956 */ 957 void (*sff_dev_select)(struct ata_port *ap, unsigned int device); 958 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl); 959 u8 (*sff_check_status)(struct ata_port *ap); 960 u8 (*sff_check_altstatus)(struct ata_port *ap); 961 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf); 962 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf); 963 void (*sff_exec_command)(struct ata_port *ap, 964 const struct ata_taskfile *tf); 965 unsigned int (*sff_data_xfer)(struct ata_queued_cmd *qc, 966 unsigned char *buf, unsigned int buflen, int rw); 967 void (*sff_irq_on)(struct ata_port *); 968 bool (*sff_irq_check)(struct ata_port *); 969 void (*sff_irq_clear)(struct ata_port *); 970 void (*sff_drain_fifo)(struct ata_queued_cmd *qc); 971 972 #ifdef CONFIG_ATA_BMDMA 973 void (*bmdma_setup)(struct ata_queued_cmd *qc); 974 void (*bmdma_start)(struct ata_queued_cmd *qc); 975 void (*bmdma_stop)(struct ata_queued_cmd *qc); 976 u8 (*bmdma_status)(struct ata_port *ap); 977 #endif /* CONFIG_ATA_BMDMA */ 978 #endif /* CONFIG_ATA_SFF */ 979 980 ssize_t (*em_show)(struct ata_port *ap, char *buf); 981 ssize_t (*em_store)(struct ata_port *ap, const char *message, 982 size_t size); 983 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf); 984 ssize_t (*sw_activity_store)(struct ata_device *dev, 985 enum sw_activity val); 986 ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state, 987 ssize_t size); 988 989 /* 990 * Obsolete 991 */ 992 void (*phy_reset)(struct ata_port *ap); 993 void (*eng_timeout)(struct ata_port *ap); 994 995 /* 996 * ->inherits must be the last field and all the preceding 997 * fields must be pointers. 998 */ 999 const struct ata_port_operations *inherits; 1000 }; 1001 1002 struct ata_port_info { 1003 unsigned long flags; 1004 unsigned long link_flags; 1005 unsigned long pio_mask; 1006 unsigned long mwdma_mask; 1007 unsigned long udma_mask; 1008 struct ata_port_operations *port_ops; 1009 void *private_data; 1010 }; 1011 1012 struct ata_timing { 1013 unsigned short mode; /* ATA mode */ 1014 unsigned short setup; /* t1 */ 1015 unsigned short act8b; /* t2 for 8-bit I/O */ 1016 unsigned short rec8b; /* t2i for 8-bit I/O */ 1017 unsigned short cyc8b; /* t0 for 8-bit I/O */ 1018 unsigned short active; /* t2 or tD */ 1019 unsigned short recover; /* t2i or tK */ 1020 unsigned short dmack_hold; /* tj */ 1021 unsigned short cycle; /* t0 */ 1022 unsigned short udma; /* t2CYCTYP/2 */ 1023 }; 1024 1025 /* 1026 * Core layer - drivers/ata/libata-core.c 1027 */ 1028 extern struct ata_port_operations ata_dummy_port_ops; 1029 extern const struct ata_port_info ata_dummy_port_info; 1030 1031 static inline bool ata_is_atapi(u8 prot) 1032 { 1033 return prot & ATA_PROT_FLAG_ATAPI; 1034 } 1035 1036 static inline bool ata_is_pio(u8 prot) 1037 { 1038 return prot & ATA_PROT_FLAG_PIO; 1039 } 1040 1041 static inline bool ata_is_dma(u8 prot) 1042 { 1043 return prot & ATA_PROT_FLAG_DMA; 1044 } 1045 1046 static inline bool ata_is_ncq(u8 prot) 1047 { 1048 return prot & ATA_PROT_FLAG_NCQ; 1049 } 1050 1051 static inline bool ata_is_data(u8 prot) 1052 { 1053 return prot & (ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA); 1054 } 1055 1056 static inline int is_multi_taskfile(struct ata_taskfile *tf) 1057 { 1058 return (tf->command == ATA_CMD_READ_MULTI) || 1059 (tf->command == ATA_CMD_WRITE_MULTI) || 1060 (tf->command == ATA_CMD_READ_MULTI_EXT) || 1061 (tf->command == ATA_CMD_WRITE_MULTI_EXT) || 1062 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); 1063 } 1064 1065 static inline int ata_port_is_dummy(struct ata_port *ap) 1066 { 1067 return ap->ops == &ata_dummy_port_ops; 1068 } 1069 1070 extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); 1071 extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, 1072 int (*check_ready)(struct ata_link *link)); 1073 extern int sata_std_hardreset(struct ata_link *link, unsigned int *class, 1074 unsigned long deadline); 1075 extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); 1076 1077 extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports); 1078 extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, 1079 const struct ata_port_info * const * ppi, int n_ports); 1080 extern void ata_host_get(struct ata_host *host); 1081 extern void ata_host_put(struct ata_host *host); 1082 extern int ata_host_start(struct ata_host *host); 1083 extern int ata_host_register(struct ata_host *host, 1084 struct scsi_host_template *sht); 1085 extern int ata_host_activate(struct ata_host *host, int irq, 1086 irq_handler_t irq_handler, unsigned long irq_flags, 1087 struct scsi_host_template *sht); 1088 extern void ata_host_detach(struct ata_host *host); 1089 extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *); 1090 extern int ata_scsi_detect(struct scsi_host_template *sht); 1091 extern int ata_scsi_ioctl(struct scsi_device *dev, unsigned int cmd, 1092 void __user *arg); 1093 #ifdef CONFIG_COMPAT 1094 #define ATA_SCSI_COMPAT_IOCTL .compat_ioctl = ata_scsi_ioctl, 1095 #else 1096 #define ATA_SCSI_COMPAT_IOCTL /* empty */ 1097 #endif 1098 extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd); 1099 #if IS_REACHABLE(CONFIG_ATA) 1100 bool ata_scsi_dma_need_drain(struct request *rq); 1101 #else 1102 #define ata_scsi_dma_need_drain NULL 1103 #endif 1104 extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev, 1105 unsigned int cmd, void __user *arg); 1106 extern bool ata_link_online(struct ata_link *link); 1107 extern bool ata_link_offline(struct ata_link *link); 1108 #ifdef CONFIG_PM 1109 extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg); 1110 extern void ata_host_resume(struct ata_host *host); 1111 extern void ata_sas_port_suspend(struct ata_port *ap); 1112 extern void ata_sas_port_resume(struct ata_port *ap); 1113 #else 1114 static inline void ata_sas_port_suspend(struct ata_port *ap) 1115 { 1116 } 1117 static inline void ata_sas_port_resume(struct ata_port *ap) 1118 { 1119 } 1120 #endif 1121 extern int ata_ratelimit(void); 1122 extern void ata_msleep(struct ata_port *ap, unsigned int msecs); 1123 extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask, 1124 u32 val, unsigned long interval, unsigned long timeout); 1125 extern int atapi_cmd_type(u8 opcode); 1126 extern unsigned long ata_pack_xfermask(unsigned long pio_mask, 1127 unsigned long mwdma_mask, unsigned long udma_mask); 1128 extern void ata_unpack_xfermask(unsigned long xfer_mask, 1129 unsigned long *pio_mask, unsigned long *mwdma_mask, 1130 unsigned long *udma_mask); 1131 extern u8 ata_xfer_mask2mode(unsigned long xfer_mask); 1132 extern unsigned long ata_xfer_mode2mask(u8 xfer_mode); 1133 extern int ata_xfer_mode2shift(unsigned long xfer_mode); 1134 extern const char *ata_mode_string(unsigned long xfer_mask); 1135 extern unsigned long ata_id_xfermask(const u16 *id); 1136 extern int ata_std_qc_defer(struct ata_queued_cmd *qc); 1137 extern enum ata_completion_errors ata_noop_qc_prep(struct ata_queued_cmd *qc); 1138 extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, 1139 unsigned int n_elem); 1140 extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); 1141 extern void ata_dev_disable(struct ata_device *adev); 1142 extern void ata_id_string(const u16 *id, unsigned char *s, 1143 unsigned int ofs, unsigned int len); 1144 extern void ata_id_c_string(const u16 *id, unsigned char *s, 1145 unsigned int ofs, unsigned int len); 1146 extern unsigned int ata_do_dev_read_id(struct ata_device *dev, 1147 struct ata_taskfile *tf, u16 *id); 1148 extern void ata_qc_complete(struct ata_queued_cmd *qc); 1149 extern u64 ata_qc_get_active(struct ata_port *ap); 1150 extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd); 1151 extern int ata_std_bios_param(struct scsi_device *sdev, 1152 struct block_device *bdev, 1153 sector_t capacity, int geom[]); 1154 extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev); 1155 extern int ata_scsi_slave_config(struct scsi_device *sdev); 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 struct ata_device *ata_dev_pair(struct ata_device *adev); 1162 extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); 1163 extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap); 1164 extern 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 1170 extern const unsigned long sata_deb_timing_normal[]; 1171 extern const unsigned long sata_deb_timing_hotplug[]; 1172 extern const unsigned long sata_deb_timing_long[]; 1173 1174 static inline const unsigned long * 1175 sata_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 1183 extern int sata_scr_valid(struct ata_link *link); 1184 extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); 1185 extern int sata_scr_write(struct ata_link *link, int reg, u32 val); 1186 extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); 1187 extern int sata_set_spd(struct ata_link *link); 1188 extern int sata_link_hardreset(struct ata_link *link, 1189 const unsigned long *timing, unsigned long deadline, 1190 bool *online, int (*check_ready)(struct ata_link *)); 1191 extern int sata_link_resume(struct ata_link *link, const unsigned long *params, 1192 unsigned long deadline); 1193 extern void ata_eh_analyze_ncq_error(struct ata_link *link); 1194 #else 1195 static inline const unsigned long * 1196 sata_ehc_deb_timing(struct ata_eh_context *ehc) 1197 { 1198 return NULL; 1199 } 1200 static inline int sata_scr_valid(struct ata_link *link) { return 0; } 1201 static inline int sata_scr_read(struct ata_link *link, int reg, u32 *val) 1202 { 1203 return -EOPNOTSUPP; 1204 } 1205 static inline int sata_scr_write(struct ata_link *link, int reg, u32 val) 1206 { 1207 return -EOPNOTSUPP; 1208 } 1209 static inline int sata_scr_write_flush(struct ata_link *link, int reg, u32 val) 1210 { 1211 return -EOPNOTSUPP; 1212 } 1213 static inline int sata_set_spd(struct ata_link *link) { return -EOPNOTSUPP; } 1214 static inline int sata_link_hardreset(struct ata_link *link, 1215 const unsigned long *timing, 1216 unsigned long deadline, 1217 bool *online, 1218 int (*check_ready)(struct ata_link *)) 1219 { 1220 if (online) 1221 *online = false; 1222 return -EOPNOTSUPP; 1223 } 1224 static inline int sata_link_resume(struct ata_link *link, 1225 const unsigned long *params, 1226 unsigned long deadline) 1227 { 1228 return -EOPNOTSUPP; 1229 } 1230 static inline void ata_eh_analyze_ncq_error(struct ata_link *link) { } 1231 #endif 1232 extern int sata_link_debounce(struct ata_link *link, 1233 const unsigned long *params, unsigned long deadline); 1234 extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy, 1235 bool spm_wakeup); 1236 extern int ata_slave_link_init(struct ata_port *ap); 1237 extern void ata_sas_port_destroy(struct ata_port *); 1238 extern struct ata_port *ata_sas_port_alloc(struct ata_host *, 1239 struct ata_port_info *, struct Scsi_Host *); 1240 extern void ata_sas_async_probe(struct ata_port *ap); 1241 extern int ata_sas_sync_probe(struct ata_port *ap); 1242 extern int ata_sas_port_init(struct ata_port *); 1243 extern int ata_sas_port_start(struct ata_port *ap); 1244 extern int ata_sas_tport_add(struct device *parent, struct ata_port *ap); 1245 extern void ata_sas_tport_delete(struct ata_port *ap); 1246 extern void ata_sas_port_stop(struct ata_port *ap); 1247 extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); 1248 extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap); 1249 extern void ata_tf_to_fis(const struct ata_taskfile *tf, 1250 u8 pmp, int is_cmd, u8 *fis); 1251 extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); 1252 extern int ata_qc_complete_multiple(struct ata_port *ap, u64 qc_active); 1253 extern bool sata_lpm_ignore_phy_events(struct ata_link *link); 1254 extern int sata_async_notification(struct ata_port *ap); 1255 1256 extern int ata_cable_40wire(struct ata_port *ap); 1257 extern int ata_cable_80wire(struct ata_port *ap); 1258 extern int ata_cable_sata(struct ata_port *ap); 1259 extern int ata_cable_ignore(struct ata_port *ap); 1260 extern int ata_cable_unknown(struct ata_port *ap); 1261 1262 /* Timing helpers */ 1263 extern unsigned int ata_pio_need_iordy(const struct ata_device *); 1264 extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); 1265 1266 /* PCI */ 1267 #ifdef CONFIG_PCI 1268 struct pci_dev; 1269 1270 struct 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 1277 extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); 1278 extern void ata_pci_shutdown_one(struct pci_dev *pdev); 1279 extern void ata_pci_remove_one(struct pci_dev *pdev); 1280 1281 #ifdef CONFIG_PM 1282 extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); 1283 extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); 1284 extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); 1285 extern int ata_pci_device_resume(struct pci_dev *pdev); 1286 #endif /* CONFIG_PM */ 1287 #endif /* CONFIG_PCI */ 1288 1289 struct platform_device; 1290 1291 extern int ata_platform_remove_one(struct platform_device *pdev); 1292 1293 /* 1294 * ACPI - drivers/ata/libata-acpi.c 1295 */ 1296 #ifdef CONFIG_ATA_ACPI 1297 static 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 } 1303 int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); 1304 int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); 1305 unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, 1306 const struct ata_acpi_gtm *gtm); 1307 int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm); 1308 #else 1309 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1310 { 1311 return NULL; 1312 } 1313 1314 static inline int ata_acpi_stm(const struct ata_port *ap, 1315 struct ata_acpi_gtm *stm) 1316 { 1317 return -ENOSYS; 1318 } 1319 1320 static inline int ata_acpi_gtm(const struct ata_port *ap, 1321 struct ata_acpi_gtm *stm) 1322 { 1323 return -ENOSYS; 1324 } 1325 1326 static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, 1327 const struct ata_acpi_gtm *gtm) 1328 { 1329 return 0; 1330 } 1331 1332 static 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 */ 1342 extern void ata_port_schedule_eh(struct ata_port *ap); 1343 extern void ata_port_wait_eh(struct ata_port *ap); 1344 extern int ata_link_abort(struct ata_link *link); 1345 extern int ata_port_abort(struct ata_port *ap); 1346 extern int ata_port_freeze(struct ata_port *ap); 1347 1348 extern void ata_eh_freeze_port(struct ata_port *ap); 1349 extern void ata_eh_thaw_port(struct ata_port *ap); 1350 1351 extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); 1352 extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); 1353 1354 extern 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); 1357 extern void ata_std_error_handler(struct ata_port *ap); 1358 extern void ata_std_sched_eh(struct ata_port *ap); 1359 extern void ata_std_end_eh(struct ata_port *ap); 1360 extern 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 */ 1383 extern const struct ata_port_operations ata_base_port_ops; 1384 extern const struct ata_port_operations sata_port_ops; 1385 extern struct device_attribute *ata_common_sdev_attrs[]; 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_destroy = ata_scsi_slave_destroy, \ 1404 .bios_param = ata_std_bios_param, \ 1405 .unlock_native_capacity = ata_scsi_unlock_native_capacity 1406 1407 #define ATA_SUBBASE_SHT(drv_name) \ 1408 __ATA_BASE_SHT(drv_name), \ 1409 .can_queue = ATA_DEF_QUEUE, \ 1410 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \ 1411 .slave_configure = ata_scsi_slave_config 1412 1413 #define ATA_BASE_SHT(drv_name) \ 1414 ATA_SUBBASE_SHT(drv_name), \ 1415 .sdev_attrs = ata_common_sdev_attrs 1416 1417 #ifdef CONFIG_SATA_HOST 1418 extern struct device_attribute *ata_ncq_sdev_attrs[]; 1419 1420 #define ATA_NCQ_SHT(drv_name) \ 1421 ATA_SUBBASE_SHT(drv_name), \ 1422 .sdev_attrs = ata_ncq_sdev_attrs, \ 1423 .change_queue_depth = ata_scsi_change_queue_depth 1424 #endif 1425 1426 /* 1427 * PMP helpers 1428 */ 1429 #ifdef CONFIG_SATA_PMP 1430 static inline bool sata_pmp_supported(struct ata_port *ap) 1431 { 1432 return ap->flags & ATA_FLAG_PMP; 1433 } 1434 1435 static inline bool sata_pmp_attached(struct ata_port *ap) 1436 { 1437 return ap->nr_pmp_links != 0; 1438 } 1439 1440 static inline bool ata_is_host_link(const struct ata_link *link) 1441 { 1442 return link == &link->ap->link || link == link->ap->slave_link; 1443 } 1444 #else /* CONFIG_SATA_PMP */ 1445 static inline bool sata_pmp_supported(struct ata_port *ap) 1446 { 1447 return false; 1448 } 1449 1450 static inline bool sata_pmp_attached(struct ata_port *ap) 1451 { 1452 return false; 1453 } 1454 1455 static inline bool ata_is_host_link(const struct ata_link *link) 1456 { 1457 return 1; 1458 } 1459 #endif /* CONFIG_SATA_PMP */ 1460 1461 static inline int sata_srst_pmp(struct ata_link *link) 1462 { 1463 if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) 1464 return SATA_PMP_CTRL_PORT; 1465 return link->pmp; 1466 } 1467 1468 /* 1469 * printk helpers 1470 */ 1471 __printf(3, 4) 1472 void ata_port_printk(const struct ata_port *ap, const char *level, 1473 const char *fmt, ...); 1474 __printf(3, 4) 1475 void ata_link_printk(const struct ata_link *link, const char *level, 1476 const char *fmt, ...); 1477 __printf(3, 4) 1478 void ata_dev_printk(const struct ata_device *dev, const char *level, 1479 const char *fmt, ...); 1480 1481 #define ata_port_err(ap, fmt, ...) \ 1482 ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__) 1483 #define ata_port_warn(ap, fmt, ...) \ 1484 ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__) 1485 #define ata_port_notice(ap, fmt, ...) \ 1486 ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__) 1487 #define ata_port_info(ap, fmt, ...) \ 1488 ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__) 1489 #define ata_port_dbg(ap, fmt, ...) \ 1490 ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__) 1491 1492 #define ata_link_err(link, fmt, ...) \ 1493 ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__) 1494 #define ata_link_warn(link, fmt, ...) \ 1495 ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__) 1496 #define ata_link_notice(link, fmt, ...) \ 1497 ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__) 1498 #define ata_link_info(link, fmt, ...) \ 1499 ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__) 1500 #define ata_link_dbg(link, fmt, ...) \ 1501 ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__) 1502 1503 #define ata_dev_err(dev, fmt, ...) \ 1504 ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__) 1505 #define ata_dev_warn(dev, fmt, ...) \ 1506 ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__) 1507 #define ata_dev_notice(dev, fmt, ...) \ 1508 ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__) 1509 #define ata_dev_info(dev, fmt, ...) \ 1510 ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__) 1511 #define ata_dev_dbg(dev, fmt, ...) \ 1512 ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__) 1513 1514 void ata_print_version(const struct device *dev, const char *version); 1515 1516 /* 1517 * ata_eh_info helpers 1518 */ 1519 extern __printf(2, 3) 1520 void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); 1521 extern __printf(2, 3) 1522 void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); 1523 extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); 1524 1525 static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) 1526 { 1527 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; 1528 ehi->flags |= ATA_EHI_HOTPLUGGED; 1529 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK; 1530 ehi->err_mask |= AC_ERR_ATA_BUS; 1531 } 1532 1533 /* 1534 * port description helpers 1535 */ 1536 extern __printf(2, 3) 1537 void ata_port_desc(struct ata_port *ap, const char *fmt, ...); 1538 #ifdef CONFIG_PCI 1539 extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, 1540 const char *name); 1541 #endif 1542 1543 static inline bool ata_tag_internal(unsigned int tag) 1544 { 1545 return tag == ATA_TAG_INTERNAL; 1546 } 1547 1548 static inline bool ata_tag_valid(unsigned int tag) 1549 { 1550 return tag < ATA_MAX_QUEUE || ata_tag_internal(tag); 1551 } 1552 1553 #define __ata_qc_for_each(ap, qc, tag, max_tag, fn) \ 1554 for ((tag) = 0; (tag) < (max_tag) && \ 1555 ({ qc = fn((ap), (tag)); 1; }); (tag)++) \ 1556 1557 /* 1558 * Internal use only, iterate commands ignoring error handling and 1559 * status of 'qc'. 1560 */ 1561 #define ata_qc_for_each_raw(ap, qc, tag) \ 1562 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, __ata_qc_from_tag) 1563 1564 /* 1565 * Iterate all potential commands that can be queued 1566 */ 1567 #define ata_qc_for_each(ap, qc, tag) \ 1568 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, ata_qc_from_tag) 1569 1570 /* 1571 * Like ata_qc_for_each, but with the internal tag included 1572 */ 1573 #define ata_qc_for_each_with_internal(ap, qc, tag) \ 1574 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE + 1, ata_qc_from_tag) 1575 1576 /* 1577 * device helpers 1578 */ 1579 static inline unsigned int ata_class_enabled(unsigned int class) 1580 { 1581 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || 1582 class == ATA_DEV_PMP || class == ATA_DEV_SEMB || 1583 class == ATA_DEV_ZAC; 1584 } 1585 1586 static inline unsigned int ata_class_disabled(unsigned int class) 1587 { 1588 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || 1589 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP || 1590 class == ATA_DEV_ZAC_UNSUP; 1591 } 1592 1593 static inline unsigned int ata_class_absent(unsigned int class) 1594 { 1595 return !ata_class_enabled(class) && !ata_class_disabled(class); 1596 } 1597 1598 static inline unsigned int ata_dev_enabled(const struct ata_device *dev) 1599 { 1600 return ata_class_enabled(dev->class); 1601 } 1602 1603 static inline unsigned int ata_dev_disabled(const struct ata_device *dev) 1604 { 1605 return ata_class_disabled(dev->class); 1606 } 1607 1608 static inline unsigned int ata_dev_absent(const struct ata_device *dev) 1609 { 1610 return ata_class_absent(dev->class); 1611 } 1612 1613 /* 1614 * link helpers 1615 */ 1616 static inline int ata_link_max_devices(const struct ata_link *link) 1617 { 1618 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) 1619 return 2; 1620 return 1; 1621 } 1622 1623 static inline int ata_link_active(struct ata_link *link) 1624 { 1625 return ata_tag_valid(link->active_tag) || link->sactive; 1626 } 1627 1628 /* 1629 * Iterators 1630 * 1631 * ATA_LITER_* constants are used to select link iteration mode and 1632 * ATA_DITER_* device iteration mode. 1633 * 1634 * For a custom iteration directly using ata_{link|dev}_next(), if 1635 * @link or @dev, respectively, is NULL, the first element is 1636 * returned. @dev and @link can be any valid device or link and the 1637 * next element according to the iteration mode will be returned. 1638 * After the last element, NULL is returned. 1639 */ 1640 enum ata_link_iter_mode { 1641 ATA_LITER_EDGE, /* if present, PMP links only; otherwise, 1642 * host link. no slave link */ 1643 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */ 1644 ATA_LITER_PMP_FIRST, /* PMP links followed by host link, 1645 * slave link still comes after host link */ 1646 }; 1647 1648 enum ata_dev_iter_mode { 1649 ATA_DITER_ENABLED, 1650 ATA_DITER_ENABLED_REVERSE, 1651 ATA_DITER_ALL, 1652 ATA_DITER_ALL_REVERSE, 1653 }; 1654 1655 extern struct ata_link *ata_link_next(struct ata_link *link, 1656 struct ata_port *ap, 1657 enum ata_link_iter_mode mode); 1658 1659 extern struct ata_device *ata_dev_next(struct ata_device *dev, 1660 struct ata_link *link, 1661 enum ata_dev_iter_mode mode); 1662 1663 /* 1664 * Shortcut notation for iterations 1665 * 1666 * ata_for_each_link() iterates over each link of @ap according to 1667 * @mode. @link points to the current link in the loop. @link is 1668 * NULL after loop termination. ata_for_each_dev() works the same way 1669 * except that it iterates over each device of @link. 1670 * 1671 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be 1672 * specified when using the following shorthand notations. Only the 1673 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be 1674 * specified. This not only increases brevity but also makes it 1675 * impossible to use ATA_LITER_* for device iteration or vice-versa. 1676 */ 1677 #define ata_for_each_link(link, ap, mode) \ 1678 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \ 1679 (link) = ata_link_next((link), (ap), ATA_LITER_##mode)) 1680 1681 #define ata_for_each_dev(dev, link, mode) \ 1682 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \ 1683 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode)) 1684 1685 /** 1686 * ata_ncq_enabled - Test whether NCQ is enabled 1687 * @dev: ATA device to test for 1688 * 1689 * LOCKING: 1690 * spin_lock_irqsave(host lock) 1691 * 1692 * RETURNS: 1693 * 1 if NCQ is enabled for @dev, 0 otherwise. 1694 */ 1695 static inline int ata_ncq_enabled(struct ata_device *dev) 1696 { 1697 if (!IS_ENABLED(CONFIG_SATA_HOST)) 1698 return 0; 1699 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | 1700 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; 1701 } 1702 1703 static inline bool ata_fpdma_dsm_supported(struct ata_device *dev) 1704 { 1705 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1706 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] & 1707 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM); 1708 } 1709 1710 static inline bool ata_fpdma_read_log_supported(struct ata_device *dev) 1711 { 1712 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1713 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET] & 1714 ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED); 1715 } 1716 1717 static inline bool ata_fpdma_zac_mgmt_in_supported(struct ata_device *dev) 1718 { 1719 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1720 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET] & 1721 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED); 1722 } 1723 1724 static inline bool ata_fpdma_zac_mgmt_out_supported(struct ata_device *dev) 1725 { 1726 return (dev->ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET] & 1727 ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT); 1728 } 1729 1730 static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) 1731 { 1732 qc->tf.ctl |= ATA_NIEN; 1733 } 1734 1735 static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, 1736 unsigned int tag) 1737 { 1738 if (ata_tag_valid(tag)) 1739 return &ap->qcmd[tag]; 1740 return NULL; 1741 } 1742 1743 static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, 1744 unsigned int tag) 1745 { 1746 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); 1747 1748 if (unlikely(!qc) || !ap->ops->error_handler) 1749 return qc; 1750 1751 if ((qc->flags & (ATA_QCFLAG_ACTIVE | 1752 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) 1753 return qc; 1754 1755 return NULL; 1756 } 1757 1758 static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc) 1759 { 1760 return qc->nbytes - min(qc->extrabytes, qc->nbytes); 1761 } 1762 1763 static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) 1764 { 1765 memset(tf, 0, sizeof(*tf)); 1766 1767 #ifdef CONFIG_ATA_SFF 1768 tf->ctl = dev->link->ap->ctl; 1769 #else 1770 tf->ctl = ATA_DEVCTL_OBS; 1771 #endif 1772 if (dev->devno == 0) 1773 tf->device = ATA_DEVICE_OBS; 1774 else 1775 tf->device = ATA_DEVICE_OBS | ATA_DEV1; 1776 } 1777 1778 static inline void ata_qc_reinit(struct ata_queued_cmd *qc) 1779 { 1780 qc->dma_dir = DMA_NONE; 1781 qc->sg = NULL; 1782 qc->flags = 0; 1783 qc->cursg = NULL; 1784 qc->cursg_ofs = 0; 1785 qc->nbytes = qc->extrabytes = qc->curbytes = 0; 1786 qc->n_elem = 0; 1787 qc->err_mask = 0; 1788 qc->sect_size = ATA_SECT_SIZE; 1789 1790 ata_tf_init(qc->dev, &qc->tf); 1791 1792 /* init result_tf such that it indicates normal completion */ 1793 qc->result_tf.command = ATA_DRDY; 1794 qc->result_tf.feature = 0; 1795 } 1796 1797 static inline int ata_try_flush_cache(const struct ata_device *dev) 1798 { 1799 return ata_id_wcache_enabled(dev->id) || 1800 ata_id_has_flush(dev->id) || 1801 ata_id_has_flush_ext(dev->id); 1802 } 1803 1804 static inline unsigned int ac_err_mask(u8 status) 1805 { 1806 if (status & (ATA_BUSY | ATA_DRQ)) 1807 return AC_ERR_HSM; 1808 if (status & (ATA_ERR | ATA_DF)) 1809 return AC_ERR_DEV; 1810 return 0; 1811 } 1812 1813 static inline unsigned int __ac_err_mask(u8 status) 1814 { 1815 unsigned int mask = ac_err_mask(status); 1816 if (mask == 0) 1817 return AC_ERR_OTHER; 1818 return mask; 1819 } 1820 1821 static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) 1822 { 1823 return *(struct ata_port **)&host->hostdata[0]; 1824 } 1825 1826 static inline int ata_check_ready(u8 status) 1827 { 1828 if (!(status & ATA_BUSY)) 1829 return 1; 1830 1831 /* 0xff indicates either no device or device not ready */ 1832 if (status == 0xff) 1833 return -ENODEV; 1834 1835 return 0; 1836 } 1837 1838 static inline unsigned long ata_deadline(unsigned long from_jiffies, 1839 unsigned long timeout_msecs) 1840 { 1841 return from_jiffies + msecs_to_jiffies(timeout_msecs); 1842 } 1843 1844 /* Don't open code these in drivers as there are traps. Firstly the range may 1845 change in future hardware and specs, secondly 0xFF means 'no DMA' but is 1846 > UDMA_0. Dyma ddreigiau */ 1847 1848 static inline int ata_using_mwdma(struct ata_device *adev) 1849 { 1850 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4) 1851 return 1; 1852 return 0; 1853 } 1854 1855 static inline int ata_using_udma(struct ata_device *adev) 1856 { 1857 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7) 1858 return 1; 1859 return 0; 1860 } 1861 1862 static inline int ata_dma_enabled(struct ata_device *adev) 1863 { 1864 return (adev->dma_mode == 0xFF ? 0 : 1); 1865 } 1866 1867 /************************************************************************** 1868 * PATA timings - drivers/ata/libata-pata-timings.c 1869 */ 1870 extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); 1871 extern int ata_timing_compute(struct ata_device *, unsigned short, 1872 struct ata_timing *, int, int); 1873 extern void ata_timing_merge(const struct ata_timing *, 1874 const struct ata_timing *, struct ata_timing *, 1875 unsigned int); 1876 1877 /************************************************************************** 1878 * PMP - drivers/ata/libata-pmp.c 1879 */ 1880 #ifdef CONFIG_SATA_PMP 1881 1882 extern const struct ata_port_operations sata_pmp_port_ops; 1883 1884 extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); 1885 extern void sata_pmp_error_handler(struct ata_port *ap); 1886 1887 #else /* CONFIG_SATA_PMP */ 1888 1889 #define sata_pmp_port_ops sata_port_ops 1890 #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer 1891 #define sata_pmp_error_handler ata_std_error_handler 1892 1893 #endif /* CONFIG_SATA_PMP */ 1894 1895 1896 /************************************************************************** 1897 * SFF - drivers/ata/libata-sff.c 1898 */ 1899 #ifdef CONFIG_ATA_SFF 1900 1901 extern const struct ata_port_operations ata_sff_port_ops; 1902 extern const struct ata_port_operations ata_bmdma32_port_ops; 1903 1904 /* PIO only, sg_tablesize and dma_boundary limits can be removed */ 1905 #define ATA_PIO_SHT(drv_name) \ 1906 ATA_BASE_SHT(drv_name), \ 1907 .sg_tablesize = LIBATA_MAX_PRD, \ 1908 .dma_boundary = ATA_DMA_BOUNDARY 1909 1910 extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); 1911 extern u8 ata_sff_check_status(struct ata_port *ap); 1912 extern void ata_sff_pause(struct ata_port *ap); 1913 extern void ata_sff_dma_pause(struct ata_port *ap); 1914 extern int ata_sff_busy_sleep(struct ata_port *ap, 1915 unsigned long timeout_pat, unsigned long timeout); 1916 extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline); 1917 extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); 1918 extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf); 1919 extern void ata_sff_exec_command(struct ata_port *ap, 1920 const struct ata_taskfile *tf); 1921 extern unsigned int ata_sff_data_xfer(struct ata_queued_cmd *qc, 1922 unsigned char *buf, unsigned int buflen, int rw); 1923 extern unsigned int ata_sff_data_xfer32(struct ata_queued_cmd *qc, 1924 unsigned char *buf, unsigned int buflen, int rw); 1925 extern void ata_sff_irq_on(struct ata_port *ap); 1926 extern void ata_sff_irq_clear(struct ata_port *ap); 1927 extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, 1928 u8 status, int in_wq); 1929 extern void ata_sff_queue_work(struct work_struct *work); 1930 extern void ata_sff_queue_delayed_work(struct delayed_work *dwork, 1931 unsigned long delay); 1932 extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay); 1933 extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); 1934 extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); 1935 extern unsigned int ata_sff_port_intr(struct ata_port *ap, 1936 struct ata_queued_cmd *qc); 1937 extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); 1938 extern void ata_sff_lost_interrupt(struct ata_port *ap); 1939 extern void ata_sff_freeze(struct ata_port *ap); 1940 extern void ata_sff_thaw(struct ata_port *ap); 1941 extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline); 1942 extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, 1943 u8 *r_err); 1944 extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask, 1945 unsigned long deadline); 1946 extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes, 1947 unsigned long deadline); 1948 extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class, 1949 unsigned long deadline); 1950 extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes); 1951 extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc); 1952 extern void ata_sff_error_handler(struct ata_port *ap); 1953 extern void ata_sff_std_ports(struct ata_ioports *ioaddr); 1954 #ifdef CONFIG_PCI 1955 extern int ata_pci_sff_init_host(struct ata_host *host); 1956 extern int ata_pci_sff_prepare_host(struct pci_dev *pdev, 1957 const struct ata_port_info * const * ppi, 1958 struct ata_host **r_host); 1959 extern int ata_pci_sff_activate_host(struct ata_host *host, 1960 irq_handler_t irq_handler, 1961 struct scsi_host_template *sht); 1962 extern int ata_pci_sff_init_one(struct pci_dev *pdev, 1963 const struct ata_port_info * const * ppi, 1964 struct scsi_host_template *sht, void *host_priv, int hflags); 1965 #endif /* CONFIG_PCI */ 1966 1967 #ifdef CONFIG_ATA_BMDMA 1968 1969 extern const struct ata_port_operations ata_bmdma_port_ops; 1970 1971 #define ATA_BMDMA_SHT(drv_name) \ 1972 ATA_BASE_SHT(drv_name), \ 1973 .sg_tablesize = LIBATA_MAX_PRD, \ 1974 .dma_boundary = ATA_DMA_BOUNDARY 1975 1976 extern enum ata_completion_errors ata_bmdma_qc_prep(struct ata_queued_cmd *qc); 1977 extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc); 1978 extern enum ata_completion_errors ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc); 1979 extern unsigned int ata_bmdma_port_intr(struct ata_port *ap, 1980 struct ata_queued_cmd *qc); 1981 extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance); 1982 extern void ata_bmdma_error_handler(struct ata_port *ap); 1983 extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc); 1984 extern void ata_bmdma_irq_clear(struct ata_port *ap); 1985 extern void ata_bmdma_setup(struct ata_queued_cmd *qc); 1986 extern void ata_bmdma_start(struct ata_queued_cmd *qc); 1987 extern void ata_bmdma_stop(struct ata_queued_cmd *qc); 1988 extern u8 ata_bmdma_status(struct ata_port *ap); 1989 extern int ata_bmdma_port_start(struct ata_port *ap); 1990 extern int ata_bmdma_port_start32(struct ata_port *ap); 1991 1992 #ifdef CONFIG_PCI 1993 extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); 1994 extern void ata_pci_bmdma_init(struct ata_host *host); 1995 extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev, 1996 const struct ata_port_info * const * ppi, 1997 struct ata_host **r_host); 1998 extern int ata_pci_bmdma_init_one(struct pci_dev *pdev, 1999 const struct ata_port_info * const * ppi, 2000 struct scsi_host_template *sht, 2001 void *host_priv, int hflags); 2002 #endif /* CONFIG_PCI */ 2003 #endif /* CONFIG_ATA_BMDMA */ 2004 2005 /** 2006 * ata_sff_busy_wait - Wait for a port status register 2007 * @ap: Port to wait for. 2008 * @bits: bits that must be clear 2009 * @max: number of 10uS waits to perform 2010 * 2011 * Waits up to max*10 microseconds for the selected bits in the port's 2012 * status register to be cleared. 2013 * Returns final value of status register. 2014 * 2015 * LOCKING: 2016 * Inherited from caller. 2017 */ 2018 static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits, 2019 unsigned int max) 2020 { 2021 u8 status; 2022 2023 do { 2024 udelay(10); 2025 status = ap->ops->sff_check_status(ap); 2026 max--; 2027 } while (status != 0xff && (status & bits) && (max > 0)); 2028 2029 return status; 2030 } 2031 2032 /** 2033 * ata_wait_idle - Wait for a port to be idle. 2034 * @ap: Port to wait for. 2035 * 2036 * Waits up to 10ms for port's BUSY and DRQ signals to clear. 2037 * Returns final value of status register. 2038 * 2039 * LOCKING: 2040 * Inherited from caller. 2041 */ 2042 static inline u8 ata_wait_idle(struct ata_port *ap) 2043 { 2044 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); 2045 2046 #ifdef ATA_DEBUG 2047 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) 2048 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n", 2049 status); 2050 #endif 2051 2052 return status; 2053 } 2054 #endif /* CONFIG_ATA_SFF */ 2055 2056 #endif /* __LINUX_LIBATA_H__ */ 2057