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 */ 424 425 /* DMA mask for user DMA control: User visible values; DO NOT 426 renumber */ 427 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ 428 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ 429 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ 430 431 /* ATAPI command types */ 432 ATAPI_READ = 0, /* READs */ 433 ATAPI_WRITE = 1, /* WRITEs */ 434 ATAPI_READ_CD = 2, /* READ CD [MSF] */ 435 ATAPI_PASS_THRU = 3, /* SAT pass-thru */ 436 ATAPI_MISC = 4, /* the rest */ 437 438 /* Timing constants */ 439 ATA_TIMING_SETUP = (1 << 0), 440 ATA_TIMING_ACT8B = (1 << 1), 441 ATA_TIMING_REC8B = (1 << 2), 442 ATA_TIMING_CYC8B = (1 << 3), 443 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | 444 ATA_TIMING_CYC8B, 445 ATA_TIMING_ACTIVE = (1 << 4), 446 ATA_TIMING_RECOVER = (1 << 5), 447 ATA_TIMING_DMACK_HOLD = (1 << 6), 448 ATA_TIMING_CYCLE = (1 << 7), 449 ATA_TIMING_UDMA = (1 << 8), 450 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | 451 ATA_TIMING_REC8B | ATA_TIMING_CYC8B | 452 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | 453 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE | 454 ATA_TIMING_UDMA, 455 456 /* ACPI constants */ 457 ATA_ACPI_FILTER_SETXFER = 1 << 0, 458 ATA_ACPI_FILTER_LOCK = 1 << 1, 459 ATA_ACPI_FILTER_DIPM = 1 << 2, 460 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */ 461 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */ 462 463 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER | 464 ATA_ACPI_FILTER_LOCK | 465 ATA_ACPI_FILTER_DIPM, 466 }; 467 468 enum ata_xfer_mask { 469 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1) 470 << ATA_SHIFT_PIO, 471 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1) 472 << ATA_SHIFT_MWDMA, 473 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1) 474 << ATA_SHIFT_UDMA, 475 }; 476 477 enum hsm_task_states { 478 HSM_ST_IDLE, /* no command on going */ 479 HSM_ST_FIRST, /* (waiting the device to) 480 write CDB or first data block */ 481 HSM_ST, /* (waiting the device to) transfer data */ 482 HSM_ST_LAST, /* (waiting the device to) complete command */ 483 HSM_ST_ERR, /* error */ 484 }; 485 486 enum ata_completion_errors { 487 AC_ERR_OK = 0, /* no error */ 488 AC_ERR_DEV = (1 << 0), /* device reported error */ 489 AC_ERR_HSM = (1 << 1), /* host state machine violation */ 490 AC_ERR_TIMEOUT = (1 << 2), /* timeout */ 491 AC_ERR_MEDIA = (1 << 3), /* media error */ 492 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ 493 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ 494 AC_ERR_SYSTEM = (1 << 6), /* system error */ 495 AC_ERR_INVALID = (1 << 7), /* invalid argument */ 496 AC_ERR_OTHER = (1 << 8), /* unknown */ 497 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ 498 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ 499 }; 500 501 /* 502 * Link power management policy: If you alter this, you also need to 503 * alter libata-scsi.c (for the ascii descriptions) 504 */ 505 enum ata_lpm_policy { 506 ATA_LPM_UNKNOWN, 507 ATA_LPM_MAX_POWER, 508 ATA_LPM_MED_POWER, 509 ATA_LPM_MED_POWER_WITH_DIPM, /* Med power + DIPM as win IRST does */ 510 ATA_LPM_MIN_POWER_WITH_PARTIAL, /* Min Power + partial and slumber */ 511 ATA_LPM_MIN_POWER, /* Min power + no partial (slumber only) */ 512 }; 513 514 enum ata_lpm_hints { 515 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */ 516 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */ 517 ATA_LPM_WAKE_ONLY = (1 << 2), /* only wake up link */ 518 }; 519 520 /* forward declarations */ 521 struct scsi_device; 522 struct ata_port_operations; 523 struct ata_port; 524 struct ata_link; 525 struct ata_queued_cmd; 526 527 /* typedefs */ 528 typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); 529 typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); 530 typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, 531 unsigned long deadline); 532 typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); 533 534 extern struct device_attribute dev_attr_unload_heads; 535 #ifdef CONFIG_SATA_HOST 536 extern struct device_attribute dev_attr_link_power_management_policy; 537 extern struct device_attribute dev_attr_ncq_prio_enable; 538 extern struct device_attribute dev_attr_em_message_type; 539 extern struct device_attribute dev_attr_em_message; 540 extern struct device_attribute dev_attr_sw_activity; 541 #endif 542 543 enum sw_activity { 544 OFF, 545 BLINK_ON, 546 BLINK_OFF, 547 }; 548 549 struct ata_taskfile { 550 unsigned long flags; /* ATA_TFLAG_xxx */ 551 u8 protocol; /* ATA_PROT_xxx */ 552 553 u8 ctl; /* control reg */ 554 555 u8 hob_feature; /* additional data */ 556 u8 hob_nsect; /* to support LBA48 */ 557 u8 hob_lbal; 558 u8 hob_lbam; 559 u8 hob_lbah; 560 561 u8 feature; 562 u8 nsect; 563 u8 lbal; 564 u8 lbam; 565 u8 lbah; 566 567 u8 device; 568 569 u8 command; /* IO operation */ 570 571 u32 auxiliary; /* auxiliary field */ 572 /* from SATA 3.1 and */ 573 /* ATA-8 ACS-3 */ 574 }; 575 576 #ifdef CONFIG_ATA_SFF 577 struct ata_ioports { 578 void __iomem *cmd_addr; 579 void __iomem *data_addr; 580 void __iomem *error_addr; 581 void __iomem *feature_addr; 582 void __iomem *nsect_addr; 583 void __iomem *lbal_addr; 584 void __iomem *lbam_addr; 585 void __iomem *lbah_addr; 586 void __iomem *device_addr; 587 void __iomem *status_addr; 588 void __iomem *command_addr; 589 void __iomem *altstatus_addr; 590 void __iomem *ctl_addr; 591 #ifdef CONFIG_ATA_BMDMA 592 void __iomem *bmdma_addr; 593 #endif /* CONFIG_ATA_BMDMA */ 594 void __iomem *scr_addr; 595 }; 596 #endif /* CONFIG_ATA_SFF */ 597 598 struct ata_host { 599 spinlock_t lock; 600 struct device *dev; 601 void __iomem * const *iomap; 602 unsigned int n_ports; 603 unsigned int n_tags; /* nr of NCQ tags */ 604 void *private_data; 605 struct ata_port_operations *ops; 606 unsigned long flags; 607 struct kref kref; 608 609 struct mutex eh_mutex; 610 struct task_struct *eh_owner; 611 612 struct ata_port *simplex_claimed; /* channel owning the DMA */ 613 struct ata_port *ports[]; 614 }; 615 616 struct ata_queued_cmd { 617 struct ata_port *ap; 618 struct ata_device *dev; 619 620 struct scsi_cmnd *scsicmd; 621 void (*scsidone)(struct scsi_cmnd *); 622 623 struct ata_taskfile tf; 624 u8 cdb[ATAPI_CDB_LEN]; 625 626 unsigned long flags; /* ATA_QCFLAG_xxx */ 627 unsigned int tag; /* libata core tag */ 628 unsigned int hw_tag; /* driver tag */ 629 unsigned int n_elem; 630 unsigned int orig_n_elem; 631 632 int dma_dir; 633 634 unsigned int sect_size; 635 636 unsigned int nbytes; 637 unsigned int extrabytes; 638 unsigned int curbytes; 639 640 struct scatterlist sgent; 641 642 struct scatterlist *sg; 643 644 struct scatterlist *cursg; 645 unsigned int cursg_ofs; 646 647 unsigned int err_mask; 648 struct ata_taskfile result_tf; 649 ata_qc_cb_t complete_fn; 650 651 void *private_data; 652 void *lldd_task; 653 }; 654 655 struct ata_port_stats { 656 unsigned long unhandled_irq; 657 unsigned long idle_irq; 658 unsigned long rw_reqbuf; 659 }; 660 661 struct ata_ering_entry { 662 unsigned int eflags; 663 unsigned int err_mask; 664 u64 timestamp; 665 }; 666 667 struct ata_ering { 668 int cursor; 669 struct ata_ering_entry ring[ATA_ERING_SIZE]; 670 }; 671 672 struct ata_device { 673 struct ata_link *link; 674 unsigned int devno; /* 0 or 1 */ 675 unsigned int horkage; /* List of broken features */ 676 unsigned long flags; /* ATA_DFLAG_xxx */ 677 struct scsi_device *sdev; /* attached SCSI device */ 678 void *private_data; 679 #ifdef CONFIG_ATA_ACPI 680 union acpi_object *gtf_cache; 681 unsigned int gtf_filter; 682 #endif 683 #ifdef CONFIG_SATA_ZPODD 684 void *zpodd; 685 #endif 686 struct device tdev; 687 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */ 688 u64 n_sectors; /* size of device, if ATA */ 689 u64 n_native_sectors; /* native size, if ATA */ 690 unsigned int class; /* ATA_DEV_xxx */ 691 unsigned long unpark_deadline; 692 693 u8 pio_mode; 694 u8 dma_mode; 695 u8 xfer_mode; 696 unsigned int xfer_shift; /* ATA_SHIFT_xxx */ 697 698 unsigned int multi_count; /* sectors count for 699 READ/WRITE MULTIPLE */ 700 unsigned int max_sectors; /* per-device max sectors */ 701 unsigned int cdb_len; 702 703 /* per-dev xfer mask */ 704 unsigned long pio_mask; 705 unsigned long mwdma_mask; 706 unsigned long udma_mask; 707 708 /* for CHS addressing */ 709 u16 cylinders; /* Number of cylinders */ 710 u16 heads; /* Number of heads */ 711 u16 sectors; /* Number of sectors per track */ 712 713 union { 714 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ 715 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ 716 } ____cacheline_aligned; 717 718 /* DEVSLP Timing Variables from Identify Device Data Log */ 719 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE]; 720 721 /* NCQ send and receive log subcommand support */ 722 u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE]; 723 u8 ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_SIZE]; 724 725 /* ZAC zone configuration */ 726 u32 zac_zoned_cap; 727 u32 zac_zones_optimal_open; 728 u32 zac_zones_optimal_nonseq; 729 u32 zac_zones_max_open; 730 731 /* error history */ 732 int spdn_cnt; 733 /* ering is CLEAR_END, read comment above CLEAR_END */ 734 struct ata_ering ering; 735 }; 736 737 /* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are 738 * cleared to zero on ata_dev_init(). 739 */ 740 #define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors) 741 #define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering) 742 743 struct ata_eh_info { 744 struct ata_device *dev; /* offending device */ 745 u32 serror; /* SError from LLDD */ 746 unsigned int err_mask; /* port-wide err_mask */ 747 unsigned int action; /* ATA_EH_* action mask */ 748 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ 749 unsigned int flags; /* ATA_EHI_* flags */ 750 751 unsigned int probe_mask; 752 753 char desc[ATA_EH_DESC_LEN]; 754 int desc_len; 755 }; 756 757 struct ata_eh_context { 758 struct ata_eh_info i; 759 int tries[ATA_MAX_DEVICES]; 760 int cmd_timeout_idx[ATA_MAX_DEVICES] 761 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE]; 762 unsigned int classes[ATA_MAX_DEVICES]; 763 unsigned int did_probe_mask; 764 unsigned int unloaded_mask; 765 unsigned int saved_ncq_enabled; 766 u8 saved_xfer_mode[ATA_MAX_DEVICES]; 767 /* timestamp for the last reset attempt or success */ 768 unsigned long last_reset; 769 }; 770 771 struct ata_acpi_drive 772 { 773 u32 pio; 774 u32 dma; 775 } __packed; 776 777 struct ata_acpi_gtm { 778 struct ata_acpi_drive drive[2]; 779 u32 flags; 780 } __packed; 781 782 struct ata_link { 783 struct ata_port *ap; 784 int pmp; /* port multiplier port # */ 785 786 struct device tdev; 787 unsigned int active_tag; /* active tag on this link */ 788 u32 sactive; /* active NCQ commands */ 789 790 unsigned int flags; /* ATA_LFLAG_xxx */ 791 792 u32 saved_scontrol; /* SControl on probe */ 793 unsigned int hw_sata_spd_limit; 794 unsigned int sata_spd_limit; 795 unsigned int sata_spd; /* current SATA PHY speed */ 796 enum ata_lpm_policy lpm_policy; 797 798 /* record runtime error info, protected by host_set lock */ 799 struct ata_eh_info eh_info; 800 /* EH context */ 801 struct ata_eh_context eh_context; 802 803 struct ata_device device[ATA_MAX_DEVICES]; 804 805 unsigned long last_lpm_change; /* when last LPM change happened */ 806 }; 807 #define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag) 808 #define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0]) 809 810 struct ata_port { 811 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ 812 struct ata_port_operations *ops; 813 spinlock_t *lock; 814 /* Flags owned by the EH context. Only EH should touch these once the 815 port is active */ 816 unsigned long flags; /* ATA_FLAG_xxx */ 817 /* Flags that change dynamically, protected by ap->lock */ 818 unsigned int pflags; /* ATA_PFLAG_xxx */ 819 unsigned int print_id; /* user visible unique port ID */ 820 unsigned int local_port_no; /* host local port num */ 821 unsigned int port_no; /* 0 based port no. inside the host */ 822 823 #ifdef CONFIG_ATA_SFF 824 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ 825 u8 ctl; /* cache of ATA control register */ 826 u8 last_ctl; /* Cache last written value */ 827 struct ata_link* sff_pio_task_link; /* link currently used */ 828 struct delayed_work sff_pio_task; 829 #ifdef CONFIG_ATA_BMDMA 830 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */ 831 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */ 832 #endif /* CONFIG_ATA_BMDMA */ 833 #endif /* CONFIG_ATA_SFF */ 834 835 unsigned int pio_mask; 836 unsigned int mwdma_mask; 837 unsigned int udma_mask; 838 unsigned int cbl; /* cable type; ATA_CBL_xxx */ 839 840 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE + 1]; 841 unsigned long sas_tag_allocated; /* for sas tag allocation only */ 842 u64 qc_active; 843 int nr_active_links; /* #links with active qcs */ 844 unsigned int sas_last_tag; /* track next tag hw expects */ 845 846 struct ata_link link; /* host default link */ 847 struct ata_link *slave_link; /* see ata_slave_link_init() */ 848 849 int nr_pmp_links; /* nr of available PMP links */ 850 struct ata_link *pmp_link; /* array of PMP links */ 851 struct ata_link *excl_link; /* for PMP qc exclusion */ 852 853 struct ata_port_stats stats; 854 struct ata_host *host; 855 struct device *dev; 856 struct device tdev; 857 858 struct mutex scsi_scan_mutex; 859 struct delayed_work hotplug_task; 860 struct work_struct scsi_rescan_task; 861 862 unsigned int hsm_task_state; 863 864 u32 msg_enable; 865 struct list_head eh_done_q; 866 wait_queue_head_t eh_wait_q; 867 int eh_tries; 868 struct completion park_req_pending; 869 870 pm_message_t pm_mesg; 871 enum ata_lpm_policy target_lpm_policy; 872 873 struct timer_list fastdrain_timer; 874 unsigned long fastdrain_cnt; 875 876 async_cookie_t cookie; 877 878 int em_message_type; 879 void *private_data; 880 881 #ifdef CONFIG_ATA_ACPI 882 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */ 883 #endif 884 /* owned by EH */ 885 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned; 886 }; 887 888 /* The following initializer overrides a method to NULL whether one of 889 * its parent has the method defined or not. This is equivalent to 890 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant 891 * expression and thus can't be used as an initializer. 892 */ 893 #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT) 894 895 struct ata_port_operations { 896 /* 897 * Command execution 898 */ 899 int (*qc_defer)(struct ata_queued_cmd *qc); 900 int (*check_atapi_dma)(struct ata_queued_cmd *qc); 901 enum ata_completion_errors (*qc_prep)(struct ata_queued_cmd *qc); 902 unsigned int (*qc_issue)(struct ata_queued_cmd *qc); 903 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc); 904 905 /* 906 * Configuration and exception handling 907 */ 908 int (*cable_detect)(struct ata_port *ap); 909 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask); 910 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev); 911 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev); 912 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev); 913 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id); 914 915 void (*dev_config)(struct ata_device *dev); 916 917 void (*freeze)(struct ata_port *ap); 918 void (*thaw)(struct ata_port *ap); 919 ata_prereset_fn_t prereset; 920 ata_reset_fn_t softreset; 921 ata_reset_fn_t hardreset; 922 ata_postreset_fn_t postreset; 923 ata_prereset_fn_t pmp_prereset; 924 ata_reset_fn_t pmp_softreset; 925 ata_reset_fn_t pmp_hardreset; 926 ata_postreset_fn_t pmp_postreset; 927 void (*error_handler)(struct ata_port *ap); 928 void (*lost_interrupt)(struct ata_port *ap); 929 void (*post_internal_cmd)(struct ata_queued_cmd *qc); 930 void (*sched_eh)(struct ata_port *ap); 931 void (*end_eh)(struct ata_port *ap); 932 933 /* 934 * Optional features 935 */ 936 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val); 937 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val); 938 void (*pmp_attach)(struct ata_port *ap); 939 void (*pmp_detach)(struct ata_port *ap); 940 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy, 941 unsigned hints); 942 943 /* 944 * Start, stop, suspend and resume 945 */ 946 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg); 947 int (*port_resume)(struct ata_port *ap); 948 int (*port_start)(struct ata_port *ap); 949 void (*port_stop)(struct ata_port *ap); 950 void (*host_stop)(struct ata_host *host); 951 952 #ifdef CONFIG_ATA_SFF 953 /* 954 * SFF / taskfile oriented ops 955 */ 956 void (*sff_dev_select)(struct ata_port *ap, unsigned int device); 957 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl); 958 u8 (*sff_check_status)(struct ata_port *ap); 959 u8 (*sff_check_altstatus)(struct ata_port *ap); 960 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf); 961 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf); 962 void (*sff_exec_command)(struct ata_port *ap, 963 const struct ata_taskfile *tf); 964 unsigned int (*sff_data_xfer)(struct ata_queued_cmd *qc, 965 unsigned char *buf, unsigned int buflen, int rw); 966 void (*sff_irq_on)(struct ata_port *); 967 bool (*sff_irq_check)(struct ata_port *); 968 void (*sff_irq_clear)(struct ata_port *); 969 void (*sff_drain_fifo)(struct ata_queued_cmd *qc); 970 971 #ifdef CONFIG_ATA_BMDMA 972 void (*bmdma_setup)(struct ata_queued_cmd *qc); 973 void (*bmdma_start)(struct ata_queued_cmd *qc); 974 void (*bmdma_stop)(struct ata_queued_cmd *qc); 975 u8 (*bmdma_status)(struct ata_port *ap); 976 #endif /* CONFIG_ATA_BMDMA */ 977 #endif /* CONFIG_ATA_SFF */ 978 979 ssize_t (*em_show)(struct ata_port *ap, char *buf); 980 ssize_t (*em_store)(struct ata_port *ap, const char *message, 981 size_t size); 982 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf); 983 ssize_t (*sw_activity_store)(struct ata_device *dev, 984 enum sw_activity val); 985 ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state, 986 ssize_t size); 987 988 /* 989 * Obsolete 990 */ 991 void (*phy_reset)(struct ata_port *ap); 992 void (*eng_timeout)(struct ata_port *ap); 993 994 /* 995 * ->inherits must be the last field and all the preceding 996 * fields must be pointers. 997 */ 998 const struct ata_port_operations *inherits; 999 }; 1000 1001 struct ata_port_info { 1002 unsigned long flags; 1003 unsigned long link_flags; 1004 unsigned long pio_mask; 1005 unsigned long mwdma_mask; 1006 unsigned long udma_mask; 1007 struct ata_port_operations *port_ops; 1008 void *private_data; 1009 }; 1010 1011 struct ata_timing { 1012 unsigned short mode; /* ATA mode */ 1013 unsigned short setup; /* t1 */ 1014 unsigned short act8b; /* t2 for 8-bit I/O */ 1015 unsigned short rec8b; /* t2i for 8-bit I/O */ 1016 unsigned short cyc8b; /* t0 for 8-bit I/O */ 1017 unsigned short active; /* t2 or tD */ 1018 unsigned short recover; /* t2i or tK */ 1019 unsigned short dmack_hold; /* tj */ 1020 unsigned short cycle; /* t0 */ 1021 unsigned short udma; /* t2CYCTYP/2 */ 1022 }; 1023 1024 /* 1025 * Core layer - drivers/ata/libata-core.c 1026 */ 1027 extern struct ata_port_operations ata_dummy_port_ops; 1028 extern const struct ata_port_info ata_dummy_port_info; 1029 1030 static inline bool ata_is_atapi(u8 prot) 1031 { 1032 return prot & ATA_PROT_FLAG_ATAPI; 1033 } 1034 1035 static inline bool ata_is_pio(u8 prot) 1036 { 1037 return prot & ATA_PROT_FLAG_PIO; 1038 } 1039 1040 static inline bool ata_is_dma(u8 prot) 1041 { 1042 return prot & ATA_PROT_FLAG_DMA; 1043 } 1044 1045 static inline bool ata_is_ncq(u8 prot) 1046 { 1047 return prot & ATA_PROT_FLAG_NCQ; 1048 } 1049 1050 static inline bool ata_is_data(u8 prot) 1051 { 1052 return prot & (ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA); 1053 } 1054 1055 static inline int is_multi_taskfile(struct ata_taskfile *tf) 1056 { 1057 return (tf->command == ATA_CMD_READ_MULTI) || 1058 (tf->command == ATA_CMD_WRITE_MULTI) || 1059 (tf->command == ATA_CMD_READ_MULTI_EXT) || 1060 (tf->command == ATA_CMD_WRITE_MULTI_EXT) || 1061 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); 1062 } 1063 1064 static inline int ata_port_is_dummy(struct ata_port *ap) 1065 { 1066 return ap->ops == &ata_dummy_port_ops; 1067 } 1068 1069 extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); 1070 extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, 1071 int (*check_ready)(struct ata_link *link)); 1072 extern int sata_std_hardreset(struct ata_link *link, unsigned int *class, 1073 unsigned long deadline); 1074 extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); 1075 1076 extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports); 1077 extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, 1078 const struct ata_port_info * const * ppi, int n_ports); 1079 extern void ata_host_get(struct ata_host *host); 1080 extern void ata_host_put(struct ata_host *host); 1081 extern int ata_host_start(struct ata_host *host); 1082 extern int ata_host_register(struct ata_host *host, 1083 struct scsi_host_template *sht); 1084 extern int ata_host_activate(struct ata_host *host, int irq, 1085 irq_handler_t irq_handler, unsigned long irq_flags, 1086 struct scsi_host_template *sht); 1087 extern void ata_host_detach(struct ata_host *host); 1088 extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *); 1089 extern int ata_scsi_detect(struct scsi_host_template *sht); 1090 extern int ata_scsi_ioctl(struct scsi_device *dev, unsigned int cmd, 1091 void __user *arg); 1092 #ifdef CONFIG_COMPAT 1093 #define ATA_SCSI_COMPAT_IOCTL .compat_ioctl = ata_scsi_ioctl, 1094 #else 1095 #define ATA_SCSI_COMPAT_IOCTL /* empty */ 1096 #endif 1097 extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd); 1098 #if IS_REACHABLE(CONFIG_ATA) 1099 bool ata_scsi_dma_need_drain(struct request *rq); 1100 #else 1101 #define ata_scsi_dma_need_drain NULL 1102 #endif 1103 extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev, 1104 unsigned int cmd, void __user *arg); 1105 extern bool ata_link_online(struct ata_link *link); 1106 extern bool ata_link_offline(struct ata_link *link); 1107 #ifdef CONFIG_PM 1108 extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg); 1109 extern void ata_host_resume(struct ata_host *host); 1110 extern void ata_sas_port_suspend(struct ata_port *ap); 1111 extern void ata_sas_port_resume(struct ata_port *ap); 1112 #else 1113 static inline void ata_sas_port_suspend(struct ata_port *ap) 1114 { 1115 } 1116 static inline void ata_sas_port_resume(struct ata_port *ap) 1117 { 1118 } 1119 #endif 1120 extern int ata_ratelimit(void); 1121 extern void ata_msleep(struct ata_port *ap, unsigned int msecs); 1122 extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask, 1123 u32 val, unsigned long interval, unsigned long timeout); 1124 extern int atapi_cmd_type(u8 opcode); 1125 extern unsigned long ata_pack_xfermask(unsigned long pio_mask, 1126 unsigned long mwdma_mask, unsigned long udma_mask); 1127 extern void ata_unpack_xfermask(unsigned long xfer_mask, 1128 unsigned long *pio_mask, unsigned long *mwdma_mask, 1129 unsigned long *udma_mask); 1130 extern u8 ata_xfer_mask2mode(unsigned long xfer_mask); 1131 extern unsigned long ata_xfer_mode2mask(u8 xfer_mode); 1132 extern int ata_xfer_mode2shift(unsigned long xfer_mode); 1133 extern const char *ata_mode_string(unsigned long xfer_mask); 1134 extern unsigned long ata_id_xfermask(const u16 *id); 1135 extern int ata_std_qc_defer(struct ata_queued_cmd *qc); 1136 extern enum ata_completion_errors ata_noop_qc_prep(struct ata_queued_cmd *qc); 1137 extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, 1138 unsigned int n_elem); 1139 extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); 1140 extern void ata_dev_disable(struct ata_device *adev); 1141 extern void ata_id_string(const u16 *id, unsigned char *s, 1142 unsigned int ofs, unsigned int len); 1143 extern void ata_id_c_string(const u16 *id, unsigned char *s, 1144 unsigned int ofs, unsigned int len); 1145 extern unsigned int ata_do_dev_read_id(struct ata_device *dev, 1146 struct ata_taskfile *tf, u16 *id); 1147 extern void ata_qc_complete(struct ata_queued_cmd *qc); 1148 extern u64 ata_qc_get_active(struct ata_port *ap); 1149 extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd); 1150 extern int ata_std_bios_param(struct scsi_device *sdev, 1151 struct block_device *bdev, 1152 sector_t capacity, int geom[]); 1153 extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev); 1154 extern int ata_scsi_slave_config(struct scsi_device *sdev); 1155 extern void ata_scsi_slave_destroy(struct scsi_device *sdev); 1156 extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, 1157 int queue_depth); 1158 extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, 1159 int queue_depth); 1160 extern struct ata_device *ata_dev_pair(struct ata_device *adev); 1161 extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); 1162 extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap); 1163 extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q); 1164 1165 /* 1166 * SATA specific code - drivers/ata/libata-sata.c 1167 */ 1168 #ifdef CONFIG_SATA_HOST 1169 extern const unsigned long sata_deb_timing_normal[]; 1170 extern const unsigned long sata_deb_timing_hotplug[]; 1171 extern const unsigned long sata_deb_timing_long[]; 1172 1173 static inline const unsigned long * 1174 sata_ehc_deb_timing(struct ata_eh_context *ehc) 1175 { 1176 if (ehc->i.flags & ATA_EHI_HOTPLUGGED) 1177 return sata_deb_timing_hotplug; 1178 else 1179 return sata_deb_timing_normal; 1180 } 1181 1182 extern int sata_scr_valid(struct ata_link *link); 1183 extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); 1184 extern int sata_scr_write(struct ata_link *link, int reg, u32 val); 1185 extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); 1186 extern int sata_set_spd(struct ata_link *link); 1187 extern int sata_link_hardreset(struct ata_link *link, 1188 const unsigned long *timing, unsigned long deadline, 1189 bool *online, int (*check_ready)(struct ata_link *)); 1190 extern int sata_link_resume(struct ata_link *link, const unsigned long *params, 1191 unsigned long deadline); 1192 extern void ata_eh_analyze_ncq_error(struct ata_link *link); 1193 #else 1194 static inline const unsigned long * 1195 sata_ehc_deb_timing(struct ata_eh_context *ehc) 1196 { 1197 return NULL; 1198 } 1199 static inline int sata_scr_valid(struct ata_link *link) { return 0; } 1200 static inline int sata_scr_read(struct ata_link *link, int reg, u32 *val) 1201 { 1202 return -EOPNOTSUPP; 1203 } 1204 static inline int sata_scr_write(struct ata_link *link, int reg, u32 val) 1205 { 1206 return -EOPNOTSUPP; 1207 } 1208 static inline int sata_scr_write_flush(struct ata_link *link, int reg, u32 val) 1209 { 1210 return -EOPNOTSUPP; 1211 } 1212 static inline int sata_set_spd(struct ata_link *link) { return -EOPNOTSUPP; } 1213 static inline int sata_link_hardreset(struct ata_link *link, 1214 const unsigned long *timing, 1215 unsigned long deadline, 1216 bool *online, 1217 int (*check_ready)(struct ata_link *)) 1218 { 1219 if (online) 1220 *online = false; 1221 return -EOPNOTSUPP; 1222 } 1223 static inline int sata_link_resume(struct ata_link *link, 1224 const unsigned long *params, 1225 unsigned long deadline) 1226 { 1227 return -EOPNOTSUPP; 1228 } 1229 static inline void ata_eh_analyze_ncq_error(struct ata_link *link) { } 1230 #endif 1231 extern int sata_link_debounce(struct ata_link *link, 1232 const unsigned long *params, unsigned long deadline); 1233 extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy, 1234 bool spm_wakeup); 1235 extern int ata_slave_link_init(struct ata_port *ap); 1236 extern void ata_sas_port_destroy(struct ata_port *); 1237 extern struct ata_port *ata_sas_port_alloc(struct ata_host *, 1238 struct ata_port_info *, struct Scsi_Host *); 1239 extern void ata_sas_async_probe(struct ata_port *ap); 1240 extern int ata_sas_sync_probe(struct ata_port *ap); 1241 extern int ata_sas_port_init(struct ata_port *); 1242 extern int ata_sas_port_start(struct ata_port *ap); 1243 extern int ata_sas_tport_add(struct device *parent, struct ata_port *ap); 1244 extern void ata_sas_tport_delete(struct ata_port *ap); 1245 extern void ata_sas_port_stop(struct ata_port *ap); 1246 extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); 1247 extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap); 1248 extern void ata_tf_to_fis(const struct ata_taskfile *tf, 1249 u8 pmp, int is_cmd, u8 *fis); 1250 extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); 1251 extern int ata_qc_complete_multiple(struct ata_port *ap, u64 qc_active); 1252 extern bool sata_lpm_ignore_phy_events(struct ata_link *link); 1253 extern int sata_async_notification(struct ata_port *ap); 1254 1255 extern int ata_cable_40wire(struct ata_port *ap); 1256 extern int ata_cable_80wire(struct ata_port *ap); 1257 extern int ata_cable_sata(struct ata_port *ap); 1258 extern int ata_cable_ignore(struct ata_port *ap); 1259 extern int ata_cable_unknown(struct ata_port *ap); 1260 1261 /* Timing helpers */ 1262 extern unsigned int ata_pio_need_iordy(const struct ata_device *); 1263 extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); 1264 1265 /* PCI */ 1266 #ifdef CONFIG_PCI 1267 struct pci_dev; 1268 1269 struct pci_bits { 1270 unsigned int reg; /* PCI config register to read */ 1271 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ 1272 unsigned long mask; 1273 unsigned long val; 1274 }; 1275 1276 extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); 1277 extern void ata_pci_shutdown_one(struct pci_dev *pdev); 1278 extern void ata_pci_remove_one(struct pci_dev *pdev); 1279 1280 #ifdef CONFIG_PM 1281 extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); 1282 extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); 1283 extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); 1284 extern int ata_pci_device_resume(struct pci_dev *pdev); 1285 #endif /* CONFIG_PM */ 1286 #endif /* CONFIG_PCI */ 1287 1288 struct platform_device; 1289 1290 extern int ata_platform_remove_one(struct platform_device *pdev); 1291 1292 /* 1293 * ACPI - drivers/ata/libata-acpi.c 1294 */ 1295 #ifdef CONFIG_ATA_ACPI 1296 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1297 { 1298 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) 1299 return &ap->__acpi_init_gtm; 1300 return NULL; 1301 } 1302 int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); 1303 int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); 1304 unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, 1305 const struct ata_acpi_gtm *gtm); 1306 int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm); 1307 #else 1308 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1309 { 1310 return NULL; 1311 } 1312 1313 static inline int ata_acpi_stm(const struct ata_port *ap, 1314 struct ata_acpi_gtm *stm) 1315 { 1316 return -ENOSYS; 1317 } 1318 1319 static inline int ata_acpi_gtm(const struct ata_port *ap, 1320 struct ata_acpi_gtm *stm) 1321 { 1322 return -ENOSYS; 1323 } 1324 1325 static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, 1326 const struct ata_acpi_gtm *gtm) 1327 { 1328 return 0; 1329 } 1330 1331 static inline int ata_acpi_cbl_80wire(struct ata_port *ap, 1332 const struct ata_acpi_gtm *gtm) 1333 { 1334 return 0; 1335 } 1336 #endif 1337 1338 /* 1339 * EH - drivers/ata/libata-eh.c 1340 */ 1341 extern void ata_port_schedule_eh(struct ata_port *ap); 1342 extern void ata_port_wait_eh(struct ata_port *ap); 1343 extern int ata_link_abort(struct ata_link *link); 1344 extern int ata_port_abort(struct ata_port *ap); 1345 extern int ata_port_freeze(struct ata_port *ap); 1346 1347 extern void ata_eh_freeze_port(struct ata_port *ap); 1348 extern void ata_eh_thaw_port(struct ata_port *ap); 1349 1350 extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); 1351 extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); 1352 1353 extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, 1354 ata_reset_fn_t softreset, ata_reset_fn_t hardreset, 1355 ata_postreset_fn_t postreset); 1356 extern void ata_std_error_handler(struct ata_port *ap); 1357 extern void ata_std_sched_eh(struct ata_port *ap); 1358 extern void ata_std_end_eh(struct ata_port *ap); 1359 extern int ata_link_nr_enabled(struct ata_link *link); 1360 1361 /* 1362 * Base operations to inherit from and initializers for sht 1363 * 1364 * Operations 1365 * 1366 * base : Common to all libata drivers. 1367 * sata : SATA controllers w/ native interface. 1368 * pmp : SATA controllers w/ PMP support. 1369 * sff : SFF ATA controllers w/o BMDMA support. 1370 * bmdma : SFF ATA controllers w/ BMDMA support. 1371 * 1372 * sht initializers 1373 * 1374 * BASE : Common to all libata drivers. The user must set 1375 * sg_tablesize and dma_boundary. 1376 * PIO : SFF ATA controllers w/ only PIO support. 1377 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and 1378 * dma_boundary are set to BMDMA limits. 1379 * NCQ : SATA controllers supporting NCQ. The user must set 1380 * sg_tablesize, dma_boundary and can_queue. 1381 */ 1382 extern const struct ata_port_operations ata_base_port_ops; 1383 extern const struct ata_port_operations sata_port_ops; 1384 extern struct device_attribute *ata_common_sdev_attrs[]; 1385 1386 /* 1387 * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated 1388 * by the edge drivers. Because the 'module' field of sht must be the 1389 * edge driver's module reference, otherwise the driver can be unloaded 1390 * even if the scsi_device is being accessed. 1391 */ 1392 #define __ATA_BASE_SHT(drv_name) \ 1393 .module = THIS_MODULE, \ 1394 .name = drv_name, \ 1395 .ioctl = ata_scsi_ioctl, \ 1396 ATA_SCSI_COMPAT_IOCTL \ 1397 .queuecommand = ata_scsi_queuecmd, \ 1398 .dma_need_drain = ata_scsi_dma_need_drain, \ 1399 .can_queue = ATA_DEF_QUEUE, \ 1400 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \ 1401 .this_id = ATA_SHT_THIS_ID, \ 1402 .emulated = ATA_SHT_EMULATED, \ 1403 .proc_name = drv_name, \ 1404 .slave_configure = ata_scsi_slave_config, \ 1405 .slave_destroy = ata_scsi_slave_destroy, \ 1406 .bios_param = ata_std_bios_param, \ 1407 .unlock_native_capacity = ata_scsi_unlock_native_capacity 1408 1409 #define ATA_BASE_SHT(drv_name) \ 1410 __ATA_BASE_SHT(drv_name), \ 1411 .sdev_attrs = ata_common_sdev_attrs 1412 1413 #ifdef CONFIG_SATA_HOST 1414 extern struct device_attribute *ata_ncq_sdev_attrs[]; 1415 1416 #define ATA_NCQ_SHT(drv_name) \ 1417 __ATA_BASE_SHT(drv_name), \ 1418 .sdev_attrs = ata_ncq_sdev_attrs, \ 1419 .change_queue_depth = ata_scsi_change_queue_depth 1420 #endif 1421 1422 /* 1423 * PMP helpers 1424 */ 1425 #ifdef CONFIG_SATA_PMP 1426 static inline bool sata_pmp_supported(struct ata_port *ap) 1427 { 1428 return ap->flags & ATA_FLAG_PMP; 1429 } 1430 1431 static inline bool sata_pmp_attached(struct ata_port *ap) 1432 { 1433 return ap->nr_pmp_links != 0; 1434 } 1435 1436 static inline bool ata_is_host_link(const struct ata_link *link) 1437 { 1438 return link == &link->ap->link || link == link->ap->slave_link; 1439 } 1440 #else /* CONFIG_SATA_PMP */ 1441 static inline bool sata_pmp_supported(struct ata_port *ap) 1442 { 1443 return false; 1444 } 1445 1446 static inline bool sata_pmp_attached(struct ata_port *ap) 1447 { 1448 return false; 1449 } 1450 1451 static inline bool ata_is_host_link(const struct ata_link *link) 1452 { 1453 return 1; 1454 } 1455 #endif /* CONFIG_SATA_PMP */ 1456 1457 static inline int sata_srst_pmp(struct ata_link *link) 1458 { 1459 if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) 1460 return SATA_PMP_CTRL_PORT; 1461 return link->pmp; 1462 } 1463 1464 /* 1465 * printk helpers 1466 */ 1467 __printf(3, 4) 1468 void ata_port_printk(const struct ata_port *ap, const char *level, 1469 const char *fmt, ...); 1470 __printf(3, 4) 1471 void ata_link_printk(const struct ata_link *link, const char *level, 1472 const char *fmt, ...); 1473 __printf(3, 4) 1474 void ata_dev_printk(const struct ata_device *dev, const char *level, 1475 const char *fmt, ...); 1476 1477 #define ata_port_err(ap, fmt, ...) \ 1478 ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__) 1479 #define ata_port_warn(ap, fmt, ...) \ 1480 ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__) 1481 #define ata_port_notice(ap, fmt, ...) \ 1482 ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__) 1483 #define ata_port_info(ap, fmt, ...) \ 1484 ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__) 1485 #define ata_port_dbg(ap, fmt, ...) \ 1486 ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__) 1487 1488 #define ata_link_err(link, fmt, ...) \ 1489 ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__) 1490 #define ata_link_warn(link, fmt, ...) \ 1491 ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__) 1492 #define ata_link_notice(link, fmt, ...) \ 1493 ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__) 1494 #define ata_link_info(link, fmt, ...) \ 1495 ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__) 1496 #define ata_link_dbg(link, fmt, ...) \ 1497 ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__) 1498 1499 #define ata_dev_err(dev, fmt, ...) \ 1500 ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__) 1501 #define ata_dev_warn(dev, fmt, ...) \ 1502 ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__) 1503 #define ata_dev_notice(dev, fmt, ...) \ 1504 ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__) 1505 #define ata_dev_info(dev, fmt, ...) \ 1506 ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__) 1507 #define ata_dev_dbg(dev, fmt, ...) \ 1508 ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__) 1509 1510 void ata_print_version(const struct device *dev, const char *version); 1511 1512 /* 1513 * ata_eh_info helpers 1514 */ 1515 extern __printf(2, 3) 1516 void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); 1517 extern __printf(2, 3) 1518 void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); 1519 extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); 1520 1521 static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) 1522 { 1523 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; 1524 ehi->flags |= ATA_EHI_HOTPLUGGED; 1525 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK; 1526 ehi->err_mask |= AC_ERR_ATA_BUS; 1527 } 1528 1529 /* 1530 * port description helpers 1531 */ 1532 extern __printf(2, 3) 1533 void ata_port_desc(struct ata_port *ap, const char *fmt, ...); 1534 #ifdef CONFIG_PCI 1535 extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, 1536 const char *name); 1537 #endif 1538 1539 static inline bool ata_tag_internal(unsigned int tag) 1540 { 1541 return tag == ATA_TAG_INTERNAL; 1542 } 1543 1544 static inline bool ata_tag_valid(unsigned int tag) 1545 { 1546 return tag < ATA_MAX_QUEUE || ata_tag_internal(tag); 1547 } 1548 1549 #define __ata_qc_for_each(ap, qc, tag, max_tag, fn) \ 1550 for ((tag) = 0; (tag) < (max_tag) && \ 1551 ({ qc = fn((ap), (tag)); 1; }); (tag)++) \ 1552 1553 /* 1554 * Internal use only, iterate commands ignoring error handling and 1555 * status of 'qc'. 1556 */ 1557 #define ata_qc_for_each_raw(ap, qc, tag) \ 1558 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, __ata_qc_from_tag) 1559 1560 /* 1561 * Iterate all potential commands that can be queued 1562 */ 1563 #define ata_qc_for_each(ap, qc, tag) \ 1564 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, ata_qc_from_tag) 1565 1566 /* 1567 * Like ata_qc_for_each, but with the internal tag included 1568 */ 1569 #define ata_qc_for_each_with_internal(ap, qc, tag) \ 1570 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE + 1, ata_qc_from_tag) 1571 1572 /* 1573 * device helpers 1574 */ 1575 static inline unsigned int ata_class_enabled(unsigned int class) 1576 { 1577 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || 1578 class == ATA_DEV_PMP || class == ATA_DEV_SEMB || 1579 class == ATA_DEV_ZAC; 1580 } 1581 1582 static inline unsigned int ata_class_disabled(unsigned int class) 1583 { 1584 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || 1585 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP || 1586 class == ATA_DEV_ZAC_UNSUP; 1587 } 1588 1589 static inline unsigned int ata_class_absent(unsigned int class) 1590 { 1591 return !ata_class_enabled(class) && !ata_class_disabled(class); 1592 } 1593 1594 static inline unsigned int ata_dev_enabled(const struct ata_device *dev) 1595 { 1596 return ata_class_enabled(dev->class); 1597 } 1598 1599 static inline unsigned int ata_dev_disabled(const struct ata_device *dev) 1600 { 1601 return ata_class_disabled(dev->class); 1602 } 1603 1604 static inline unsigned int ata_dev_absent(const struct ata_device *dev) 1605 { 1606 return ata_class_absent(dev->class); 1607 } 1608 1609 /* 1610 * link helpers 1611 */ 1612 static inline int ata_link_max_devices(const struct ata_link *link) 1613 { 1614 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) 1615 return 2; 1616 return 1; 1617 } 1618 1619 static inline int ata_link_active(struct ata_link *link) 1620 { 1621 return ata_tag_valid(link->active_tag) || link->sactive; 1622 } 1623 1624 /* 1625 * Iterators 1626 * 1627 * ATA_LITER_* constants are used to select link iteration mode and 1628 * ATA_DITER_* device iteration mode. 1629 * 1630 * For a custom iteration directly using ata_{link|dev}_next(), if 1631 * @link or @dev, respectively, is NULL, the first element is 1632 * returned. @dev and @link can be any valid device or link and the 1633 * next element according to the iteration mode will be returned. 1634 * After the last element, NULL is returned. 1635 */ 1636 enum ata_link_iter_mode { 1637 ATA_LITER_EDGE, /* if present, PMP links only; otherwise, 1638 * host link. no slave link */ 1639 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */ 1640 ATA_LITER_PMP_FIRST, /* PMP links followed by host link, 1641 * slave link still comes after host link */ 1642 }; 1643 1644 enum ata_dev_iter_mode { 1645 ATA_DITER_ENABLED, 1646 ATA_DITER_ENABLED_REVERSE, 1647 ATA_DITER_ALL, 1648 ATA_DITER_ALL_REVERSE, 1649 }; 1650 1651 extern struct ata_link *ata_link_next(struct ata_link *link, 1652 struct ata_port *ap, 1653 enum ata_link_iter_mode mode); 1654 1655 extern struct ata_device *ata_dev_next(struct ata_device *dev, 1656 struct ata_link *link, 1657 enum ata_dev_iter_mode mode); 1658 1659 /* 1660 * Shortcut notation for iterations 1661 * 1662 * ata_for_each_link() iterates over each link of @ap according to 1663 * @mode. @link points to the current link in the loop. @link is 1664 * NULL after loop termination. ata_for_each_dev() works the same way 1665 * except that it iterates over each device of @link. 1666 * 1667 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be 1668 * specified when using the following shorthand notations. Only the 1669 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be 1670 * specified. This not only increases brevity but also makes it 1671 * impossible to use ATA_LITER_* for device iteration or vice-versa. 1672 */ 1673 #define ata_for_each_link(link, ap, mode) \ 1674 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \ 1675 (link) = ata_link_next((link), (ap), ATA_LITER_##mode)) 1676 1677 #define ata_for_each_dev(dev, link, mode) \ 1678 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \ 1679 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode)) 1680 1681 /** 1682 * ata_ncq_enabled - Test whether NCQ is enabled 1683 * @dev: ATA device to test for 1684 * 1685 * LOCKING: 1686 * spin_lock_irqsave(host lock) 1687 * 1688 * RETURNS: 1689 * 1 if NCQ is enabled for @dev, 0 otherwise. 1690 */ 1691 static inline int ata_ncq_enabled(struct ata_device *dev) 1692 { 1693 if (!IS_ENABLED(CONFIG_SATA_HOST)) 1694 return 0; 1695 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | 1696 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; 1697 } 1698 1699 static inline bool ata_fpdma_dsm_supported(struct ata_device *dev) 1700 { 1701 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1702 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] & 1703 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM); 1704 } 1705 1706 static inline bool ata_fpdma_read_log_supported(struct ata_device *dev) 1707 { 1708 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1709 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET] & 1710 ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED); 1711 } 1712 1713 static inline bool ata_fpdma_zac_mgmt_in_supported(struct ata_device *dev) 1714 { 1715 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1716 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET] & 1717 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED); 1718 } 1719 1720 static inline bool ata_fpdma_zac_mgmt_out_supported(struct ata_device *dev) 1721 { 1722 return (dev->ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET] & 1723 ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT); 1724 } 1725 1726 static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) 1727 { 1728 qc->tf.ctl |= ATA_NIEN; 1729 } 1730 1731 static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, 1732 unsigned int tag) 1733 { 1734 if (ata_tag_valid(tag)) 1735 return &ap->qcmd[tag]; 1736 return NULL; 1737 } 1738 1739 static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, 1740 unsigned int tag) 1741 { 1742 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); 1743 1744 if (unlikely(!qc) || !ap->ops->error_handler) 1745 return qc; 1746 1747 if ((qc->flags & (ATA_QCFLAG_ACTIVE | 1748 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) 1749 return qc; 1750 1751 return NULL; 1752 } 1753 1754 static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc) 1755 { 1756 return qc->nbytes - min(qc->extrabytes, qc->nbytes); 1757 } 1758 1759 static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) 1760 { 1761 memset(tf, 0, sizeof(*tf)); 1762 1763 #ifdef CONFIG_ATA_SFF 1764 tf->ctl = dev->link->ap->ctl; 1765 #else 1766 tf->ctl = ATA_DEVCTL_OBS; 1767 #endif 1768 if (dev->devno == 0) 1769 tf->device = ATA_DEVICE_OBS; 1770 else 1771 tf->device = ATA_DEVICE_OBS | ATA_DEV1; 1772 } 1773 1774 static inline void ata_qc_reinit(struct ata_queued_cmd *qc) 1775 { 1776 qc->dma_dir = DMA_NONE; 1777 qc->sg = NULL; 1778 qc->flags = 0; 1779 qc->cursg = NULL; 1780 qc->cursg_ofs = 0; 1781 qc->nbytes = qc->extrabytes = qc->curbytes = 0; 1782 qc->n_elem = 0; 1783 qc->err_mask = 0; 1784 qc->sect_size = ATA_SECT_SIZE; 1785 1786 ata_tf_init(qc->dev, &qc->tf); 1787 1788 /* init result_tf such that it indicates normal completion */ 1789 qc->result_tf.command = ATA_DRDY; 1790 qc->result_tf.feature = 0; 1791 } 1792 1793 static inline int ata_try_flush_cache(const struct ata_device *dev) 1794 { 1795 return ata_id_wcache_enabled(dev->id) || 1796 ata_id_has_flush(dev->id) || 1797 ata_id_has_flush_ext(dev->id); 1798 } 1799 1800 static inline unsigned int ac_err_mask(u8 status) 1801 { 1802 if (status & (ATA_BUSY | ATA_DRQ)) 1803 return AC_ERR_HSM; 1804 if (status & (ATA_ERR | ATA_DF)) 1805 return AC_ERR_DEV; 1806 return 0; 1807 } 1808 1809 static inline unsigned int __ac_err_mask(u8 status) 1810 { 1811 unsigned int mask = ac_err_mask(status); 1812 if (mask == 0) 1813 return AC_ERR_OTHER; 1814 return mask; 1815 } 1816 1817 static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) 1818 { 1819 return *(struct ata_port **)&host->hostdata[0]; 1820 } 1821 1822 static inline int ata_check_ready(u8 status) 1823 { 1824 if (!(status & ATA_BUSY)) 1825 return 1; 1826 1827 /* 0xff indicates either no device or device not ready */ 1828 if (status == 0xff) 1829 return -ENODEV; 1830 1831 return 0; 1832 } 1833 1834 static inline unsigned long ata_deadline(unsigned long from_jiffies, 1835 unsigned long timeout_msecs) 1836 { 1837 return from_jiffies + msecs_to_jiffies(timeout_msecs); 1838 } 1839 1840 /* Don't open code these in drivers as there are traps. Firstly the range may 1841 change in future hardware and specs, secondly 0xFF means 'no DMA' but is 1842 > UDMA_0. Dyma ddreigiau */ 1843 1844 static inline int ata_using_mwdma(struct ata_device *adev) 1845 { 1846 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4) 1847 return 1; 1848 return 0; 1849 } 1850 1851 static inline int ata_using_udma(struct ata_device *adev) 1852 { 1853 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7) 1854 return 1; 1855 return 0; 1856 } 1857 1858 static inline int ata_dma_enabled(struct ata_device *adev) 1859 { 1860 return (adev->dma_mode == 0xFF ? 0 : 1); 1861 } 1862 1863 /************************************************************************** 1864 * PATA timings - drivers/ata/libata-pata-timings.c 1865 */ 1866 extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); 1867 extern int ata_timing_compute(struct ata_device *, unsigned short, 1868 struct ata_timing *, int, int); 1869 extern void ata_timing_merge(const struct ata_timing *, 1870 const struct ata_timing *, struct ata_timing *, 1871 unsigned int); 1872 1873 /************************************************************************** 1874 * PMP - drivers/ata/libata-pmp.c 1875 */ 1876 #ifdef CONFIG_SATA_PMP 1877 1878 extern const struct ata_port_operations sata_pmp_port_ops; 1879 1880 extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); 1881 extern void sata_pmp_error_handler(struct ata_port *ap); 1882 1883 #else /* CONFIG_SATA_PMP */ 1884 1885 #define sata_pmp_port_ops sata_port_ops 1886 #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer 1887 #define sata_pmp_error_handler ata_std_error_handler 1888 1889 #endif /* CONFIG_SATA_PMP */ 1890 1891 1892 /************************************************************************** 1893 * SFF - drivers/ata/libata-sff.c 1894 */ 1895 #ifdef CONFIG_ATA_SFF 1896 1897 extern const struct ata_port_operations ata_sff_port_ops; 1898 extern const struct ata_port_operations ata_bmdma32_port_ops; 1899 1900 /* PIO only, sg_tablesize and dma_boundary limits can be removed */ 1901 #define ATA_PIO_SHT(drv_name) \ 1902 ATA_BASE_SHT(drv_name), \ 1903 .sg_tablesize = LIBATA_MAX_PRD, \ 1904 .dma_boundary = ATA_DMA_BOUNDARY 1905 1906 extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); 1907 extern u8 ata_sff_check_status(struct ata_port *ap); 1908 extern void ata_sff_pause(struct ata_port *ap); 1909 extern void ata_sff_dma_pause(struct ata_port *ap); 1910 extern int ata_sff_busy_sleep(struct ata_port *ap, 1911 unsigned long timeout_pat, unsigned long timeout); 1912 extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline); 1913 extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); 1914 extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf); 1915 extern void ata_sff_exec_command(struct ata_port *ap, 1916 const struct ata_taskfile *tf); 1917 extern unsigned int ata_sff_data_xfer(struct ata_queued_cmd *qc, 1918 unsigned char *buf, unsigned int buflen, int rw); 1919 extern unsigned int ata_sff_data_xfer32(struct ata_queued_cmd *qc, 1920 unsigned char *buf, unsigned int buflen, int rw); 1921 extern void ata_sff_irq_on(struct ata_port *ap); 1922 extern void ata_sff_irq_clear(struct ata_port *ap); 1923 extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, 1924 u8 status, int in_wq); 1925 extern void ata_sff_queue_work(struct work_struct *work); 1926 extern void ata_sff_queue_delayed_work(struct delayed_work *dwork, 1927 unsigned long delay); 1928 extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay); 1929 extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); 1930 extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); 1931 extern unsigned int ata_sff_port_intr(struct ata_port *ap, 1932 struct ata_queued_cmd *qc); 1933 extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); 1934 extern void ata_sff_lost_interrupt(struct ata_port *ap); 1935 extern void ata_sff_freeze(struct ata_port *ap); 1936 extern void ata_sff_thaw(struct ata_port *ap); 1937 extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline); 1938 extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, 1939 u8 *r_err); 1940 extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask, 1941 unsigned long deadline); 1942 extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes, 1943 unsigned long deadline); 1944 extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class, 1945 unsigned long deadline); 1946 extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes); 1947 extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc); 1948 extern void ata_sff_error_handler(struct ata_port *ap); 1949 extern void ata_sff_std_ports(struct ata_ioports *ioaddr); 1950 #ifdef CONFIG_PCI 1951 extern int ata_pci_sff_init_host(struct ata_host *host); 1952 extern int ata_pci_sff_prepare_host(struct pci_dev *pdev, 1953 const struct ata_port_info * const * ppi, 1954 struct ata_host **r_host); 1955 extern int ata_pci_sff_activate_host(struct ata_host *host, 1956 irq_handler_t irq_handler, 1957 struct scsi_host_template *sht); 1958 extern int ata_pci_sff_init_one(struct pci_dev *pdev, 1959 const struct ata_port_info * const * ppi, 1960 struct scsi_host_template *sht, void *host_priv, int hflags); 1961 #endif /* CONFIG_PCI */ 1962 1963 #ifdef CONFIG_ATA_BMDMA 1964 1965 extern const struct ata_port_operations ata_bmdma_port_ops; 1966 1967 #define ATA_BMDMA_SHT(drv_name) \ 1968 ATA_BASE_SHT(drv_name), \ 1969 .sg_tablesize = LIBATA_MAX_PRD, \ 1970 .dma_boundary = ATA_DMA_BOUNDARY 1971 1972 extern enum ata_completion_errors ata_bmdma_qc_prep(struct ata_queued_cmd *qc); 1973 extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc); 1974 extern enum ata_completion_errors ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc); 1975 extern unsigned int ata_bmdma_port_intr(struct ata_port *ap, 1976 struct ata_queued_cmd *qc); 1977 extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance); 1978 extern void ata_bmdma_error_handler(struct ata_port *ap); 1979 extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc); 1980 extern void ata_bmdma_irq_clear(struct ata_port *ap); 1981 extern void ata_bmdma_setup(struct ata_queued_cmd *qc); 1982 extern void ata_bmdma_start(struct ata_queued_cmd *qc); 1983 extern void ata_bmdma_stop(struct ata_queued_cmd *qc); 1984 extern u8 ata_bmdma_status(struct ata_port *ap); 1985 extern int ata_bmdma_port_start(struct ata_port *ap); 1986 extern int ata_bmdma_port_start32(struct ata_port *ap); 1987 1988 #ifdef CONFIG_PCI 1989 extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); 1990 extern void ata_pci_bmdma_init(struct ata_host *host); 1991 extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev, 1992 const struct ata_port_info * const * ppi, 1993 struct ata_host **r_host); 1994 extern int ata_pci_bmdma_init_one(struct pci_dev *pdev, 1995 const struct ata_port_info * const * ppi, 1996 struct scsi_host_template *sht, 1997 void *host_priv, int hflags); 1998 #endif /* CONFIG_PCI */ 1999 #endif /* CONFIG_ATA_BMDMA */ 2000 2001 /** 2002 * ata_sff_busy_wait - Wait for a port status register 2003 * @ap: Port to wait for. 2004 * @bits: bits that must be clear 2005 * @max: number of 10uS waits to perform 2006 * 2007 * Waits up to max*10 microseconds for the selected bits in the port's 2008 * status register to be cleared. 2009 * Returns final value of status register. 2010 * 2011 * LOCKING: 2012 * Inherited from caller. 2013 */ 2014 static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits, 2015 unsigned int max) 2016 { 2017 u8 status; 2018 2019 do { 2020 udelay(10); 2021 status = ap->ops->sff_check_status(ap); 2022 max--; 2023 } while (status != 0xff && (status & bits) && (max > 0)); 2024 2025 return status; 2026 } 2027 2028 /** 2029 * ata_wait_idle - Wait for a port to be idle. 2030 * @ap: Port to wait for. 2031 * 2032 * Waits up to 10ms for port's BUSY and DRQ signals to clear. 2033 * Returns final value of status register. 2034 * 2035 * LOCKING: 2036 * Inherited from caller. 2037 */ 2038 static inline u8 ata_wait_idle(struct ata_port *ap) 2039 { 2040 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); 2041 2042 #ifdef ATA_DEBUG 2043 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) 2044 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n", 2045 status); 2046 #endif 2047 2048 return status; 2049 } 2050 #endif /* CONFIG_ATA_SFF */ 2051 2052 #endif /* __LINUX_LIBATA_H__ */ 2053