1 /* 2 * Copyright 2003-2005 Red Hat, Inc. All rights reserved. 3 * Copyright 2003-2005 Jeff Garzik 4 * 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2, or (at your option) 9 * any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; see the file COPYING. If not, write to 18 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 19 * 20 * 21 * libata documentation is available via 'make {ps|pdf}docs', 22 * as Documentation/DocBook/libata.* 23 * 24 */ 25 26 #ifndef __LINUX_LIBATA_H__ 27 #define __LINUX_LIBATA_H__ 28 29 #include <linux/delay.h> 30 #include <linux/jiffies.h> 31 #include <linux/interrupt.h> 32 #include <linux/dma-mapping.h> 33 #include <linux/scatterlist.h> 34 #include <linux/io.h> 35 #include <linux/ata.h> 36 #include <linux/workqueue.h> 37 #include <scsi/scsi_host.h> 38 #include <linux/acpi.h> 39 #include <linux/cdrom.h> 40 41 /* 42 * Define if arch has non-standard setup. This is a _PCI_ standard 43 * not a legacy or ISA standard. 44 */ 45 #ifdef CONFIG_ATA_NONSTANDARD 46 #include <asm/libata-portmap.h> 47 #else 48 #include <asm-generic/libata-portmap.h> 49 #endif 50 51 /* 52 * compile-time options: to be removed as soon as all the drivers are 53 * converted to the new debugging mechanism 54 */ 55 #undef ATA_DEBUG /* debugging output */ 56 #undef ATA_VERBOSE_DEBUG /* yet more debugging output */ 57 #undef ATA_IRQ_TRAP /* define to ack screaming irqs */ 58 #undef ATA_NDEBUG /* define to disable quick runtime checks */ 59 60 61 /* note: prints function name for you */ 62 #ifdef ATA_DEBUG 63 #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) 64 #ifdef ATA_VERBOSE_DEBUG 65 #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) 66 #else 67 #define VPRINTK(fmt, args...) 68 #endif /* ATA_VERBOSE_DEBUG */ 69 #else 70 #define DPRINTK(fmt, args...) 71 #define VPRINTK(fmt, args...) 72 #endif /* ATA_DEBUG */ 73 74 #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args) 75 76 /* NEW: debug levels */ 77 #define HAVE_LIBATA_MSG 1 78 79 enum { 80 ATA_MSG_DRV = 0x0001, 81 ATA_MSG_INFO = 0x0002, 82 ATA_MSG_PROBE = 0x0004, 83 ATA_MSG_WARN = 0x0008, 84 ATA_MSG_MALLOC = 0x0010, 85 ATA_MSG_CTL = 0x0020, 86 ATA_MSG_INTR = 0x0040, 87 ATA_MSG_ERR = 0x0080, 88 }; 89 90 #define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV) 91 #define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO) 92 #define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE) 93 #define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN) 94 #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC) 95 #define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL) 96 #define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR) 97 #define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR) 98 99 static inline u32 ata_msg_init(int dval, int default_msg_enable_bits) 100 { 101 if (dval < 0 || dval >= (sizeof(u32) * 8)) 102 return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */ 103 if (!dval) 104 return 0; 105 return (1 << dval) - 1; 106 } 107 108 /* defines only for the constants which don't work well as enums */ 109 #define ATA_TAG_POISON 0xfafbfcfdU 110 111 enum { 112 /* various global constants */ 113 LIBATA_MAX_PRD = ATA_MAX_PRD / 2, 114 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */ 115 ATA_DEF_QUEUE = 1, 116 /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */ 117 ATA_MAX_QUEUE = 32, 118 ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1, 119 ATA_SHORT_PAUSE = 16, 120 121 ATAPI_MAX_DRAIN = 16 << 10, 122 123 ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1, 124 125 ATA_SHT_EMULATED = 1, 126 ATA_SHT_CMD_PER_LUN = 1, 127 ATA_SHT_THIS_ID = -1, 128 ATA_SHT_USE_CLUSTERING = 1, 129 130 /* struct ata_device stuff */ 131 ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */ 132 ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */ 133 ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */ 134 ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */ 135 ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */ 136 ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ 137 ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ 138 ATA_DFLAG_AN = (1 << 7), /* AN configured */ 139 ATA_DFLAG_HIPM = (1 << 8), /* device supports HIPM */ 140 ATA_DFLAG_DIPM = (1 << 9), /* device supports DIPM */ 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_SPUNDOWN = (1 << 14), /* XXX: for spindown_compat */ 147 ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */ 148 ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */ 149 ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */ 150 ATA_DFLAG_INIT_MASK = (1 << 24) - 1, 151 152 ATA_DFLAG_DETACH = (1 << 24), 153 ATA_DFLAG_DETACHED = (1 << 25), 154 155 ATA_DEV_UNKNOWN = 0, /* unknown device */ 156 ATA_DEV_ATA = 1, /* ATA device */ 157 ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ 158 ATA_DEV_ATAPI = 3, /* ATAPI device */ 159 ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ 160 ATA_DEV_PMP = 5, /* SATA port multiplier */ 161 ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ 162 ATA_DEV_SEMB = 7, /* SEMB */ 163 ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ 164 ATA_DEV_NONE = 9, /* no device */ 165 166 /* struct ata_link flags */ 167 ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */ 168 ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ 169 ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ 170 ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ 171 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, 172 ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ 173 ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ 174 ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */ 175 176 /* struct ata_port flags */ 177 ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ 178 /* (doesn't imply presence) */ 179 ATA_FLAG_SATA = (1 << 1), 180 ATA_FLAG_NO_LEGACY = (1 << 2), /* no legacy mode check */ 181 ATA_FLAG_MMIO = (1 << 3), /* use MMIO, not PIO */ 182 ATA_FLAG_SRST = (1 << 4), /* (obsolete) use ATA SRST, not E.D.D. */ 183 ATA_FLAG_SATA_RESET = (1 << 5), /* (obsolete) use COMRESET */ 184 ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ 185 ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ 186 ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ 187 ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD 188 * doesn't handle PIO interrupts */ 189 ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ 190 ATA_FLAG_DEBUGMSG = (1 << 13), 191 ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ 192 ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ 193 ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ 194 ATA_FLAG_AN = (1 << 18), /* controller supports AN */ 195 ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ 196 ATA_FLAG_IPM = (1 << 20), /* driver can handle IPM */ 197 ATA_FLAG_EM = (1 << 21), /* driver supports enclosure 198 * management */ 199 ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity 200 * led */ 201 202 /* The following flag belongs to ap->pflags but is kept in 203 * ap->flags because it's referenced in many LLDs and will be 204 * removed in not-too-distant future. 205 */ 206 ATA_FLAG_DISABLED = (1 << 23), /* port is disabled, ignore it */ 207 208 /* bits 24:31 of ap->flags are reserved for LLD specific flags */ 209 210 /* struct ata_port pflags */ 211 ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ 212 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ 213 ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ 214 ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ 215 ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ 216 ATA_PFLAG_UNLOADING = (1 << 5), /* module is unloading */ 217 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ 218 ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ 219 ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ 220 221 ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ 222 ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ 223 ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */ 224 225 /* struct ata_queued_cmd flags */ 226 ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ 227 ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */ 228 ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ 229 ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ 230 ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ 231 ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */ 232 ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */ 233 234 ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */ 235 ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ 236 ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ 237 238 /* host set flags */ 239 ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ 240 ATA_HOST_STARTED = (1 << 1), /* Host started */ 241 242 /* bits 24:31 of host->flags are reserved for LLD specific flags */ 243 244 /* various lengths of time */ 245 ATA_TMOUT_BOOT = 30000, /* heuristic */ 246 ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */ 247 ATA_TMOUT_INTERNAL_QUICK = 5000, 248 ATA_TMOUT_MAX_PARK = 30000, 249 250 /* FIXME: GoVault needs 2s but we can't afford that without 251 * parallel probing. 800ms is enough for iVDR disk 252 * HHD424020F7SV00. Increase to 2secs when parallel probing 253 * is in place. 254 */ 255 ATA_TMOUT_FF_WAIT = 800, 256 257 /* Spec mandates to wait for ">= 2ms" before checking status 258 * after reset. We wait 150ms, because that was the magic 259 * delay used for ATAPI devices in Hale Landis's ATADRVR, for 260 * the period of time between when the ATA command register is 261 * written, and then status is checked. Because waiting for 262 * "a while" before checking status is fine, post SRST, we 263 * perform this magic delay here as well. 264 * 265 * Old drivers/ide uses the 2mS rule and then waits for ready. 266 */ 267 ATA_WAIT_AFTER_RESET = 150, 268 269 /* If PMP is supported, we have to do follow-up SRST. As some 270 * PMPs don't send D2H Reg FIS after hardreset, LLDs are 271 * advised to wait only for the following duration before 272 * doing SRST. 273 */ 274 ATA_TMOUT_PMP_SRST_WAIT = 1000, 275 276 /* ATA bus states */ 277 BUS_UNKNOWN = 0, 278 BUS_DMA = 1, 279 BUS_IDLE = 2, 280 BUS_NOINTR = 3, 281 BUS_NODATA = 4, 282 BUS_TIMER = 5, 283 BUS_PIO = 6, 284 BUS_EDD = 7, 285 BUS_IDENTIFY = 8, 286 BUS_PACKET = 9, 287 288 /* SATA port states */ 289 PORT_UNKNOWN = 0, 290 PORT_ENABLED = 1, 291 PORT_DISABLED = 2, 292 293 /* encoding various smaller bitmaps into a single 294 * unsigned long bitmap 295 */ 296 ATA_NR_PIO_MODES = 7, 297 ATA_NR_MWDMA_MODES = 5, 298 ATA_NR_UDMA_MODES = 8, 299 300 ATA_SHIFT_PIO = 0, 301 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES, 302 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES, 303 304 /* size of buffer to pad xfers ending on unaligned boundaries */ 305 ATA_DMA_PAD_SZ = 4, 306 307 /* ering size */ 308 ATA_ERING_SIZE = 32, 309 310 /* return values for ->qc_defer */ 311 ATA_DEFER_LINK = 1, 312 ATA_DEFER_PORT = 2, 313 314 /* desc_len for ata_eh_info and context */ 315 ATA_EH_DESC_LEN = 80, 316 317 /* reset / recovery action types */ 318 ATA_EH_REVALIDATE = (1 << 0), 319 ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */ 320 ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */ 321 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, 322 ATA_EH_ENABLE_LINK = (1 << 3), 323 ATA_EH_LPM = (1 << 4), /* link power management action */ 324 ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */ 325 326 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK, 327 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET | 328 ATA_EH_ENABLE_LINK | ATA_EH_LPM, 329 330 /* ata_eh_info->flags */ 331 ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ 332 ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ 333 ATA_EHI_QUIET = (1 << 3), /* be quiet */ 334 335 ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ 336 ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ 337 ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ 338 ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ 339 ATA_EHI_POST_SETMODE = (1 << 20), /* revaildating after setmode */ 340 341 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, 342 343 /* mask of flags to transfer *to* the slave link */ 344 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, 345 346 /* max tries if error condition is still set after ->error_handler */ 347 ATA_EH_MAX_TRIES = 5, 348 349 /* how hard are we gonna try to probe/recover devices */ 350 ATA_PROBE_MAX_TRIES = 3, 351 ATA_EH_DEV_TRIES = 3, 352 ATA_EH_PMP_TRIES = 5, 353 ATA_EH_PMP_LINK_TRIES = 3, 354 355 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */ 356 357 /* This should match the actual table size of 358 * ata_eh_cmd_timeout_table in libata-eh.c. 359 */ 360 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 5, 361 362 /* Horkage types. May be set by libata or controller on drives 363 (some horkage may be drive/controller pair dependant */ 364 365 ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ 366 ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ 367 ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ 368 ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ 369 ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ 370 ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */ 371 ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ 372 ATA_HORKAGE_IPM = (1 << 7), /* Link PM problems */ 373 ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */ 374 ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */ 375 ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */ 376 377 /* DMA mask for user DMA control: User visible values; DO NOT 378 renumber */ 379 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ 380 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ 381 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ 382 383 /* ATAPI command types */ 384 ATAPI_READ = 0, /* READs */ 385 ATAPI_WRITE = 1, /* WRITEs */ 386 ATAPI_READ_CD = 2, /* READ CD [MSF] */ 387 ATAPI_PASS_THRU = 3, /* SAT pass-thru */ 388 ATAPI_MISC = 4, /* the rest */ 389 390 /* Timing constants */ 391 ATA_TIMING_SETUP = (1 << 0), 392 ATA_TIMING_ACT8B = (1 << 1), 393 ATA_TIMING_REC8B = (1 << 2), 394 ATA_TIMING_CYC8B = (1 << 3), 395 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | 396 ATA_TIMING_CYC8B, 397 ATA_TIMING_ACTIVE = (1 << 4), 398 ATA_TIMING_RECOVER = (1 << 5), 399 ATA_TIMING_CYCLE = (1 << 6), 400 ATA_TIMING_UDMA = (1 << 7), 401 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | 402 ATA_TIMING_REC8B | ATA_TIMING_CYC8B | 403 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | 404 ATA_TIMING_CYCLE | ATA_TIMING_UDMA, 405 }; 406 407 enum ata_xfer_mask { 408 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1) 409 << ATA_SHIFT_PIO, 410 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1) 411 << ATA_SHIFT_MWDMA, 412 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1) 413 << ATA_SHIFT_UDMA, 414 }; 415 416 enum hsm_task_states { 417 HSM_ST_IDLE, /* no command on going */ 418 HSM_ST_FIRST, /* (waiting the device to) 419 write CDB or first data block */ 420 HSM_ST, /* (waiting the device to) transfer data */ 421 HSM_ST_LAST, /* (waiting the device to) complete command */ 422 HSM_ST_ERR, /* error */ 423 }; 424 425 enum ata_completion_errors { 426 AC_ERR_DEV = (1 << 0), /* device reported error */ 427 AC_ERR_HSM = (1 << 1), /* host state machine violation */ 428 AC_ERR_TIMEOUT = (1 << 2), /* timeout */ 429 AC_ERR_MEDIA = (1 << 3), /* media error */ 430 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ 431 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ 432 AC_ERR_SYSTEM = (1 << 6), /* system error */ 433 AC_ERR_INVALID = (1 << 7), /* invalid argument */ 434 AC_ERR_OTHER = (1 << 8), /* unknown */ 435 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ 436 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ 437 }; 438 439 /* forward declarations */ 440 struct scsi_device; 441 struct ata_port_operations; 442 struct ata_port; 443 struct ata_link; 444 struct ata_queued_cmd; 445 446 /* typedefs */ 447 typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); 448 typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); 449 typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, 450 unsigned long deadline); 451 typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); 452 453 /* 454 * host pm policy: If you alter this, you also need to alter libata-scsi.c 455 * (for the ascii descriptions) 456 */ 457 enum link_pm { 458 NOT_AVAILABLE, 459 MIN_POWER, 460 MAX_PERFORMANCE, 461 MEDIUM_POWER, 462 }; 463 extern struct device_attribute dev_attr_link_power_management_policy; 464 extern struct device_attribute dev_attr_unload_heads; 465 extern struct device_attribute dev_attr_em_message_type; 466 extern struct device_attribute dev_attr_em_message; 467 extern struct device_attribute dev_attr_sw_activity; 468 469 enum sw_activity { 470 OFF, 471 BLINK_ON, 472 BLINK_OFF, 473 }; 474 475 #ifdef CONFIG_ATA_SFF 476 struct ata_ioports { 477 void __iomem *cmd_addr; 478 void __iomem *data_addr; 479 void __iomem *error_addr; 480 void __iomem *feature_addr; 481 void __iomem *nsect_addr; 482 void __iomem *lbal_addr; 483 void __iomem *lbam_addr; 484 void __iomem *lbah_addr; 485 void __iomem *device_addr; 486 void __iomem *status_addr; 487 void __iomem *command_addr; 488 void __iomem *altstatus_addr; 489 void __iomem *ctl_addr; 490 void __iomem *bmdma_addr; 491 void __iomem *scr_addr; 492 }; 493 #endif /* CONFIG_ATA_SFF */ 494 495 struct ata_host { 496 spinlock_t lock; 497 struct device *dev; 498 void __iomem * const *iomap; 499 unsigned int n_ports; 500 void *private_data; 501 struct ata_port_operations *ops; 502 unsigned long flags; 503 #ifdef CONFIG_ATA_ACPI 504 acpi_handle acpi_handle; 505 #endif 506 struct ata_port *simplex_claimed; /* channel owning the DMA */ 507 struct ata_port *ports[0]; 508 }; 509 510 struct ata_queued_cmd { 511 struct ata_port *ap; 512 struct ata_device *dev; 513 514 struct scsi_cmnd *scsicmd; 515 void (*scsidone)(struct scsi_cmnd *); 516 517 struct ata_taskfile tf; 518 u8 cdb[ATAPI_CDB_LEN]; 519 520 unsigned long flags; /* ATA_QCFLAG_xxx */ 521 unsigned int tag; 522 unsigned int n_elem; 523 524 int dma_dir; 525 526 unsigned int sect_size; 527 528 unsigned int nbytes; 529 unsigned int extrabytes; 530 unsigned int curbytes; 531 532 struct scatterlist *cursg; 533 unsigned int cursg_ofs; 534 535 struct scatterlist sgent; 536 537 struct scatterlist *sg; 538 539 unsigned int err_mask; 540 struct ata_taskfile result_tf; 541 ata_qc_cb_t complete_fn; 542 543 void *private_data; 544 void *lldd_task; 545 }; 546 547 struct ata_port_stats { 548 unsigned long unhandled_irq; 549 unsigned long idle_irq; 550 unsigned long rw_reqbuf; 551 }; 552 553 struct ata_ering_entry { 554 unsigned int eflags; 555 unsigned int err_mask; 556 u64 timestamp; 557 }; 558 559 struct ata_ering { 560 int cursor; 561 struct ata_ering_entry ring[ATA_ERING_SIZE]; 562 }; 563 564 struct ata_device { 565 struct ata_link *link; 566 unsigned int devno; /* 0 or 1 */ 567 unsigned int horkage; /* List of broken features */ 568 unsigned long flags; /* ATA_DFLAG_xxx */ 569 struct scsi_device *sdev; /* attached SCSI device */ 570 #ifdef CONFIG_ATA_ACPI 571 acpi_handle acpi_handle; 572 union acpi_object *gtf_cache; 573 #endif 574 /* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */ 575 u64 n_sectors; /* size of device, if ATA */ 576 unsigned int class; /* ATA_DEV_xxx */ 577 unsigned long unpark_deadline; 578 579 u8 pio_mode; 580 u8 dma_mode; 581 u8 xfer_mode; 582 unsigned int xfer_shift; /* ATA_SHIFT_xxx */ 583 584 unsigned int multi_count; /* sectors count for 585 READ/WRITE MULTIPLE */ 586 unsigned int max_sectors; /* per-device max sectors */ 587 unsigned int cdb_len; 588 589 /* per-dev xfer mask */ 590 unsigned long pio_mask; 591 unsigned long mwdma_mask; 592 unsigned long udma_mask; 593 594 /* for CHS addressing */ 595 u16 cylinders; /* Number of cylinders */ 596 u16 heads; /* Number of heads */ 597 u16 sectors; /* Number of sectors per track */ 598 599 /* error history */ 600 int spdn_cnt; 601 struct ata_ering ering; 602 603 union { 604 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ 605 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ 606 }; 607 }; 608 609 /* Offset into struct ata_device. Fields above it are maintained 610 * acress device init. Fields below are zeroed. 611 */ 612 #define ATA_DEVICE_CLEAR_OFFSET offsetof(struct ata_device, n_sectors) 613 614 struct ata_eh_info { 615 struct ata_device *dev; /* offending device */ 616 u32 serror; /* SError from LLDD */ 617 unsigned int err_mask; /* port-wide err_mask */ 618 unsigned int action; /* ATA_EH_* action mask */ 619 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ 620 unsigned int flags; /* ATA_EHI_* flags */ 621 622 unsigned int probe_mask; 623 624 char desc[ATA_EH_DESC_LEN]; 625 int desc_len; 626 }; 627 628 struct ata_eh_context { 629 struct ata_eh_info i; 630 int tries[ATA_MAX_DEVICES]; 631 int cmd_timeout_idx[ATA_MAX_DEVICES] 632 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE]; 633 unsigned int classes[ATA_MAX_DEVICES]; 634 unsigned int did_probe_mask; 635 unsigned int unloaded_mask; 636 unsigned int saved_ncq_enabled; 637 u8 saved_xfer_mode[ATA_MAX_DEVICES]; 638 /* timestamp for the last reset attempt or success */ 639 unsigned long last_reset; 640 }; 641 642 struct ata_acpi_drive 643 { 644 u32 pio; 645 u32 dma; 646 } __packed; 647 648 struct ata_acpi_gtm { 649 struct ata_acpi_drive drive[2]; 650 u32 flags; 651 } __packed; 652 653 struct ata_link { 654 struct ata_port *ap; 655 int pmp; /* port multiplier port # */ 656 657 unsigned int active_tag; /* active tag on this link */ 658 u32 sactive; /* active NCQ commands */ 659 660 unsigned int flags; /* ATA_LFLAG_xxx */ 661 662 u32 saved_scontrol; /* SControl on probe */ 663 unsigned int hw_sata_spd_limit; 664 unsigned int sata_spd_limit; 665 unsigned int sata_spd; /* current SATA PHY speed */ 666 667 /* record runtime error info, protected by host_set lock */ 668 struct ata_eh_info eh_info; 669 /* EH context */ 670 struct ata_eh_context eh_context; 671 672 struct ata_device device[ATA_MAX_DEVICES]; 673 }; 674 675 struct ata_port { 676 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ 677 struct ata_port_operations *ops; 678 spinlock_t *lock; 679 unsigned long flags; /* ATA_FLAG_xxx */ 680 unsigned int pflags; /* ATA_PFLAG_xxx */ 681 unsigned int print_id; /* user visible unique port ID */ 682 unsigned int port_no; /* 0 based port no. inside the host */ 683 684 struct ata_prd *prd; /* our SG list */ 685 dma_addr_t prd_dma; /* and its DMA mapping */ 686 687 #ifdef CONFIG_ATA_SFF 688 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ 689 #endif /* CONFIG_ATA_SFF */ 690 691 u8 ctl; /* cache of ATA control register */ 692 u8 last_ctl; /* Cache last written value */ 693 unsigned int pio_mask; 694 unsigned int mwdma_mask; 695 unsigned int udma_mask; 696 unsigned int cbl; /* cable type; ATA_CBL_xxx */ 697 698 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; 699 unsigned int qc_active; 700 int nr_active_links; /* #links with active qcs */ 701 702 struct ata_link link; /* host default link */ 703 struct ata_link *slave_link; /* see ata_slave_link_init() */ 704 705 int nr_pmp_links; /* nr of available PMP links */ 706 struct ata_link *pmp_link; /* array of PMP links */ 707 struct ata_link *excl_link; /* for PMP qc exclusion */ 708 709 struct ata_port_stats stats; 710 struct ata_host *host; 711 struct device *dev; 712 713 void *port_task_data; 714 struct delayed_work port_task; 715 struct delayed_work hotplug_task; 716 struct work_struct scsi_rescan_task; 717 718 unsigned int hsm_task_state; 719 720 u32 msg_enable; 721 struct list_head eh_done_q; 722 wait_queue_head_t eh_wait_q; 723 int eh_tries; 724 struct completion park_req_pending; 725 726 pm_message_t pm_mesg; 727 int *pm_result; 728 enum link_pm pm_policy; 729 730 struct timer_list fastdrain_timer; 731 unsigned long fastdrain_cnt; 732 733 int em_message_type; 734 void *private_data; 735 736 #ifdef CONFIG_ATA_ACPI 737 acpi_handle acpi_handle; 738 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */ 739 #endif 740 u8 sector_buf[ATA_SECT_SIZE]; /* owned by EH */ 741 }; 742 743 /* The following initializer overrides a method to NULL whether one of 744 * its parent has the method defined or not. This is equivalent to 745 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant 746 * expression and thus can't be used as an initializer. 747 */ 748 #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT) 749 750 struct ata_port_operations { 751 /* 752 * Command execution 753 */ 754 int (*qc_defer)(struct ata_queued_cmd *qc); 755 int (*check_atapi_dma)(struct ata_queued_cmd *qc); 756 void (*qc_prep)(struct ata_queued_cmd *qc); 757 unsigned int (*qc_issue)(struct ata_queued_cmd *qc); 758 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc); 759 760 /* 761 * Configuration and exception handling 762 */ 763 int (*cable_detect)(struct ata_port *ap); 764 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask); 765 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev); 766 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev); 767 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev); 768 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id); 769 770 void (*dev_config)(struct ata_device *dev); 771 772 void (*freeze)(struct ata_port *ap); 773 void (*thaw)(struct ata_port *ap); 774 ata_prereset_fn_t prereset; 775 ata_reset_fn_t softreset; 776 ata_reset_fn_t hardreset; 777 ata_postreset_fn_t postreset; 778 ata_prereset_fn_t pmp_prereset; 779 ata_reset_fn_t pmp_softreset; 780 ata_reset_fn_t pmp_hardreset; 781 ata_postreset_fn_t pmp_postreset; 782 void (*error_handler)(struct ata_port *ap); 783 void (*post_internal_cmd)(struct ata_queued_cmd *qc); 784 785 /* 786 * Optional features 787 */ 788 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val); 789 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val); 790 void (*pmp_attach)(struct ata_port *ap); 791 void (*pmp_detach)(struct ata_port *ap); 792 int (*enable_pm)(struct ata_port *ap, enum link_pm policy); 793 void (*disable_pm)(struct ata_port *ap); 794 795 /* 796 * Start, stop, suspend and resume 797 */ 798 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg); 799 int (*port_resume)(struct ata_port *ap); 800 int (*port_start)(struct ata_port *ap); 801 void (*port_stop)(struct ata_port *ap); 802 void (*host_stop)(struct ata_host *host); 803 804 #ifdef CONFIG_ATA_SFF 805 /* 806 * SFF / taskfile oriented ops 807 */ 808 void (*sff_dev_select)(struct ata_port *ap, unsigned int device); 809 u8 (*sff_check_status)(struct ata_port *ap); 810 u8 (*sff_check_altstatus)(struct ata_port *ap); 811 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf); 812 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf); 813 void (*sff_exec_command)(struct ata_port *ap, 814 const struct ata_taskfile *tf); 815 unsigned int (*sff_data_xfer)(struct ata_device *dev, 816 unsigned char *buf, unsigned int buflen, int rw); 817 u8 (*sff_irq_on)(struct ata_port *); 818 void (*sff_irq_clear)(struct ata_port *); 819 820 void (*bmdma_setup)(struct ata_queued_cmd *qc); 821 void (*bmdma_start)(struct ata_queued_cmd *qc); 822 void (*bmdma_stop)(struct ata_queued_cmd *qc); 823 u8 (*bmdma_status)(struct ata_port *ap); 824 #endif /* CONFIG_ATA_SFF */ 825 826 ssize_t (*em_show)(struct ata_port *ap, char *buf); 827 ssize_t (*em_store)(struct ata_port *ap, const char *message, 828 size_t size); 829 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf); 830 ssize_t (*sw_activity_store)(struct ata_device *dev, 831 enum sw_activity val); 832 /* 833 * Obsolete 834 */ 835 void (*phy_reset)(struct ata_port *ap); 836 void (*eng_timeout)(struct ata_port *ap); 837 838 /* 839 * ->inherits must be the last field and all the preceding 840 * fields must be pointers. 841 */ 842 const struct ata_port_operations *inherits; 843 }; 844 845 struct ata_port_info { 846 unsigned long flags; 847 unsigned long link_flags; 848 unsigned long pio_mask; 849 unsigned long mwdma_mask; 850 unsigned long udma_mask; 851 struct ata_port_operations *port_ops; 852 void *private_data; 853 }; 854 855 struct ata_timing { 856 unsigned short mode; /* ATA mode */ 857 unsigned short setup; /* t1 */ 858 unsigned short act8b; /* t2 for 8-bit I/O */ 859 unsigned short rec8b; /* t2i for 8-bit I/O */ 860 unsigned short cyc8b; /* t0 for 8-bit I/O */ 861 unsigned short active; /* t2 or tD */ 862 unsigned short recover; /* t2i or tK */ 863 unsigned short cycle; /* t0 */ 864 unsigned short udma; /* t2CYCTYP/2 */ 865 }; 866 867 /* 868 * Core layer - drivers/ata/libata-core.c 869 */ 870 extern const unsigned long sata_deb_timing_normal[]; 871 extern const unsigned long sata_deb_timing_hotplug[]; 872 extern const unsigned long sata_deb_timing_long[]; 873 874 extern struct ata_port_operations ata_dummy_port_ops; 875 extern const struct ata_port_info ata_dummy_port_info; 876 877 static inline const unsigned long * 878 sata_ehc_deb_timing(struct ata_eh_context *ehc) 879 { 880 if (ehc->i.flags & ATA_EHI_HOTPLUGGED) 881 return sata_deb_timing_hotplug; 882 else 883 return sata_deb_timing_normal; 884 } 885 886 static inline int ata_port_is_dummy(struct ata_port *ap) 887 { 888 return ap->ops == &ata_dummy_port_ops; 889 } 890 891 extern void ata_port_probe(struct ata_port *); 892 extern int sata_set_spd(struct ata_link *link); 893 extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); 894 extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, 895 int (*check_ready)(struct ata_link *link)); 896 extern int sata_link_debounce(struct ata_link *link, 897 const unsigned long *params, unsigned long deadline); 898 extern int sata_link_resume(struct ata_link *link, const unsigned long *params, 899 unsigned long deadline); 900 extern int sata_link_hardreset(struct ata_link *link, 901 const unsigned long *timing, unsigned long deadline, 902 bool *online, int (*check_ready)(struct ata_link *)); 903 extern int sata_std_hardreset(struct ata_link *link, unsigned int *class, 904 unsigned long deadline); 905 extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); 906 extern void ata_port_disable(struct ata_port *); 907 908 extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports); 909 extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, 910 const struct ata_port_info * const * ppi, int n_ports); 911 extern int ata_slave_link_init(struct ata_port *ap); 912 extern int ata_host_start(struct ata_host *host); 913 extern int ata_host_register(struct ata_host *host, 914 struct scsi_host_template *sht); 915 extern int ata_host_activate(struct ata_host *host, int irq, 916 irq_handler_t irq_handler, unsigned long irq_flags, 917 struct scsi_host_template *sht); 918 extern void ata_host_detach(struct ata_host *host); 919 extern void ata_host_init(struct ata_host *, struct device *, 920 unsigned long, struct ata_port_operations *); 921 extern int ata_scsi_detect(struct scsi_host_template *sht); 922 extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); 923 extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)); 924 extern void ata_sas_port_destroy(struct ata_port *); 925 extern struct ata_port *ata_sas_port_alloc(struct ata_host *, 926 struct ata_port_info *, struct Scsi_Host *); 927 extern int ata_sas_port_init(struct ata_port *); 928 extern int ata_sas_port_start(struct ata_port *ap); 929 extern void ata_sas_port_stop(struct ata_port *ap); 930 extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); 931 extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), 932 struct ata_port *ap); 933 extern int sata_scr_valid(struct ata_link *link); 934 extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); 935 extern int sata_scr_write(struct ata_link *link, int reg, u32 val); 936 extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); 937 extern bool ata_link_online(struct ata_link *link); 938 extern bool ata_link_offline(struct ata_link *link); 939 #ifdef CONFIG_PM 940 extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg); 941 extern void ata_host_resume(struct ata_host *host); 942 #endif 943 extern int ata_ratelimit(void); 944 extern u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val, 945 unsigned long interval, unsigned long timeout); 946 extern int atapi_cmd_type(u8 opcode); 947 extern void ata_tf_to_fis(const struct ata_taskfile *tf, 948 u8 pmp, int is_cmd, u8 *fis); 949 extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); 950 extern unsigned long ata_pack_xfermask(unsigned long pio_mask, 951 unsigned long mwdma_mask, unsigned long udma_mask); 952 extern void ata_unpack_xfermask(unsigned long xfer_mask, 953 unsigned long *pio_mask, unsigned long *mwdma_mask, 954 unsigned long *udma_mask); 955 extern u8 ata_xfer_mask2mode(unsigned long xfer_mask); 956 extern unsigned long ata_xfer_mode2mask(u8 xfer_mode); 957 extern int ata_xfer_mode2shift(unsigned long xfer_mode); 958 extern const char *ata_mode_string(unsigned long xfer_mask); 959 extern unsigned long ata_id_xfermask(const u16 *id); 960 extern int ata_port_start(struct ata_port *ap); 961 extern int ata_std_qc_defer(struct ata_queued_cmd *qc); 962 extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); 963 extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, 964 unsigned int n_elem); 965 extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); 966 extern void ata_dev_disable(struct ata_device *adev); 967 extern void ata_id_string(const u16 *id, unsigned char *s, 968 unsigned int ofs, unsigned int len); 969 extern void ata_id_c_string(const u16 *id, unsigned char *s, 970 unsigned int ofs, unsigned int len); 971 extern unsigned int ata_do_dev_read_id(struct ata_device *dev, 972 struct ata_taskfile *tf, u16 *id); 973 extern void ata_qc_complete(struct ata_queued_cmd *qc); 974 extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active); 975 extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd, 976 void (*done)(struct scsi_cmnd *)); 977 extern int ata_std_bios_param(struct scsi_device *sdev, 978 struct block_device *bdev, 979 sector_t capacity, int geom[]); 980 extern int ata_scsi_slave_config(struct scsi_device *sdev); 981 extern void ata_scsi_slave_destroy(struct scsi_device *sdev); 982 extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, 983 int queue_depth); 984 extern struct ata_device *ata_dev_pair(struct ata_device *adev); 985 extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); 986 987 extern int ata_cable_40wire(struct ata_port *ap); 988 extern int ata_cable_80wire(struct ata_port *ap); 989 extern int ata_cable_sata(struct ata_port *ap); 990 extern int ata_cable_ignore(struct ata_port *ap); 991 extern int ata_cable_unknown(struct ata_port *ap); 992 993 /* Timing helpers */ 994 extern unsigned int ata_pio_need_iordy(const struct ata_device *); 995 extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); 996 extern int ata_timing_compute(struct ata_device *, unsigned short, 997 struct ata_timing *, int, int); 998 extern void ata_timing_merge(const struct ata_timing *, 999 const struct ata_timing *, struct ata_timing *, 1000 unsigned int); 1001 extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); 1002 1003 /* PCI */ 1004 #ifdef CONFIG_PCI 1005 struct pci_dev; 1006 1007 struct pci_bits { 1008 unsigned int reg; /* PCI config register to read */ 1009 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ 1010 unsigned long mask; 1011 unsigned long val; 1012 }; 1013 1014 extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); 1015 extern void ata_pci_remove_one(struct pci_dev *pdev); 1016 1017 #ifdef CONFIG_PM 1018 extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); 1019 extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); 1020 extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); 1021 extern int ata_pci_device_resume(struct pci_dev *pdev); 1022 #endif /* CONFIG_PM */ 1023 #endif /* CONFIG_PCI */ 1024 1025 /* 1026 * ACPI - drivers/ata/libata-acpi.c 1027 */ 1028 #ifdef CONFIG_ATA_ACPI 1029 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1030 { 1031 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) 1032 return &ap->__acpi_init_gtm; 1033 return NULL; 1034 } 1035 int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); 1036 int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); 1037 unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, 1038 const struct ata_acpi_gtm *gtm); 1039 int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm); 1040 #else 1041 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1042 { 1043 return NULL; 1044 } 1045 1046 static inline int ata_acpi_stm(const struct ata_port *ap, 1047 struct ata_acpi_gtm *stm) 1048 { 1049 return -ENOSYS; 1050 } 1051 1052 static inline int ata_acpi_gtm(const struct ata_port *ap, 1053 struct ata_acpi_gtm *stm) 1054 { 1055 return -ENOSYS; 1056 } 1057 1058 static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, 1059 const struct ata_acpi_gtm *gtm) 1060 { 1061 return 0; 1062 } 1063 1064 static inline int ata_acpi_cbl_80wire(struct ata_port *ap, 1065 const struct ata_acpi_gtm *gtm) 1066 { 1067 return 0; 1068 } 1069 #endif 1070 1071 /* 1072 * EH - drivers/ata/libata-eh.c 1073 */ 1074 extern void ata_port_schedule_eh(struct ata_port *ap); 1075 extern int ata_link_abort(struct ata_link *link); 1076 extern int ata_port_abort(struct ata_port *ap); 1077 extern int ata_port_freeze(struct ata_port *ap); 1078 extern int sata_async_notification(struct ata_port *ap); 1079 1080 extern void ata_eh_freeze_port(struct ata_port *ap); 1081 extern void ata_eh_thaw_port(struct ata_port *ap); 1082 1083 extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); 1084 extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); 1085 extern void ata_eh_analyze_ncq_error(struct ata_link *link); 1086 1087 extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, 1088 ata_reset_fn_t softreset, ata_reset_fn_t hardreset, 1089 ata_postreset_fn_t postreset); 1090 extern void ata_std_error_handler(struct ata_port *ap); 1091 1092 /* 1093 * Base operations to inherit from and initializers for sht 1094 * 1095 * Operations 1096 * 1097 * base : Common to all libata drivers. 1098 * sata : SATA controllers w/ native interface. 1099 * pmp : SATA controllers w/ PMP support. 1100 * sff : SFF ATA controllers w/o BMDMA support. 1101 * bmdma : SFF ATA controllers w/ BMDMA support. 1102 * 1103 * sht initializers 1104 * 1105 * BASE : Common to all libata drivers. The user must set 1106 * sg_tablesize and dma_boundary. 1107 * PIO : SFF ATA controllers w/ only PIO support. 1108 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and 1109 * dma_boundary are set to BMDMA limits. 1110 * NCQ : SATA controllers supporting NCQ. The user must set 1111 * sg_tablesize, dma_boundary and can_queue. 1112 */ 1113 extern const struct ata_port_operations ata_base_port_ops; 1114 extern const struct ata_port_operations sata_port_ops; 1115 extern struct device_attribute *ata_common_sdev_attrs[]; 1116 1117 #define ATA_BASE_SHT(drv_name) \ 1118 .module = THIS_MODULE, \ 1119 .name = drv_name, \ 1120 .ioctl = ata_scsi_ioctl, \ 1121 .queuecommand = ata_scsi_queuecmd, \ 1122 .can_queue = ATA_DEF_QUEUE, \ 1123 .this_id = ATA_SHT_THIS_ID, \ 1124 .cmd_per_lun = ATA_SHT_CMD_PER_LUN, \ 1125 .emulated = ATA_SHT_EMULATED, \ 1126 .use_clustering = ATA_SHT_USE_CLUSTERING, \ 1127 .proc_name = drv_name, \ 1128 .slave_configure = ata_scsi_slave_config, \ 1129 .slave_destroy = ata_scsi_slave_destroy, \ 1130 .bios_param = ata_std_bios_param, \ 1131 .sdev_attrs = ata_common_sdev_attrs 1132 1133 #define ATA_NCQ_SHT(drv_name) \ 1134 ATA_BASE_SHT(drv_name), \ 1135 .change_queue_depth = ata_scsi_change_queue_depth 1136 1137 /* 1138 * PMP helpers 1139 */ 1140 #ifdef CONFIG_SATA_PMP 1141 static inline bool sata_pmp_supported(struct ata_port *ap) 1142 { 1143 return ap->flags & ATA_FLAG_PMP; 1144 } 1145 1146 static inline bool sata_pmp_attached(struct ata_port *ap) 1147 { 1148 return ap->nr_pmp_links != 0; 1149 } 1150 1151 static inline int ata_is_host_link(const struct ata_link *link) 1152 { 1153 return link == &link->ap->link || link == link->ap->slave_link; 1154 } 1155 #else /* CONFIG_SATA_PMP */ 1156 static inline bool sata_pmp_supported(struct ata_port *ap) 1157 { 1158 return false; 1159 } 1160 1161 static inline bool sata_pmp_attached(struct ata_port *ap) 1162 { 1163 return false; 1164 } 1165 1166 static inline int ata_is_host_link(const struct ata_link *link) 1167 { 1168 return 1; 1169 } 1170 #endif /* CONFIG_SATA_PMP */ 1171 1172 static inline int sata_srst_pmp(struct ata_link *link) 1173 { 1174 if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) 1175 return SATA_PMP_CTRL_PORT; 1176 return link->pmp; 1177 } 1178 1179 /* 1180 * printk helpers 1181 */ 1182 #define ata_port_printk(ap, lv, fmt, args...) \ 1183 printk("%sata%u: "fmt, lv, (ap)->print_id , ##args) 1184 1185 #define ata_link_printk(link, lv, fmt, args...) do { \ 1186 if (sata_pmp_attached((link)->ap) || (link)->ap->slave_link) \ 1187 printk("%sata%u.%02u: "fmt, lv, (link)->ap->print_id, \ 1188 (link)->pmp , ##args); \ 1189 else \ 1190 printk("%sata%u: "fmt, lv, (link)->ap->print_id , ##args); \ 1191 } while(0) 1192 1193 #define ata_dev_printk(dev, lv, fmt, args...) \ 1194 printk("%sata%u.%02u: "fmt, lv, (dev)->link->ap->print_id, \ 1195 (dev)->link->pmp + (dev)->devno , ##args) 1196 1197 /* 1198 * ata_eh_info helpers 1199 */ 1200 extern void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) 1201 __attribute__ ((format (printf, 2, 3))); 1202 extern void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) 1203 __attribute__ ((format (printf, 2, 3))); 1204 extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); 1205 1206 static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) 1207 { 1208 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; 1209 ehi->flags |= ATA_EHI_HOTPLUGGED; 1210 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK; 1211 ehi->err_mask |= AC_ERR_ATA_BUS; 1212 } 1213 1214 /* 1215 * port description helpers 1216 */ 1217 extern void ata_port_desc(struct ata_port *ap, const char *fmt, ...) 1218 __attribute__ ((format (printf, 2, 3))); 1219 #ifdef CONFIG_PCI 1220 extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, 1221 const char *name); 1222 #endif 1223 1224 static inline unsigned int ata_tag_valid(unsigned int tag) 1225 { 1226 return (tag < ATA_MAX_QUEUE) ? 1 : 0; 1227 } 1228 1229 static inline unsigned int ata_tag_internal(unsigned int tag) 1230 { 1231 return tag == ATA_TAG_INTERNAL; 1232 } 1233 1234 /* 1235 * device helpers 1236 */ 1237 static inline unsigned int ata_class_enabled(unsigned int class) 1238 { 1239 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || 1240 class == ATA_DEV_PMP || class == ATA_DEV_SEMB; 1241 } 1242 1243 static inline unsigned int ata_class_disabled(unsigned int class) 1244 { 1245 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || 1246 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP; 1247 } 1248 1249 static inline unsigned int ata_class_absent(unsigned int class) 1250 { 1251 return !ata_class_enabled(class) && !ata_class_disabled(class); 1252 } 1253 1254 static inline unsigned int ata_dev_enabled(const struct ata_device *dev) 1255 { 1256 return ata_class_enabled(dev->class); 1257 } 1258 1259 static inline unsigned int ata_dev_disabled(const struct ata_device *dev) 1260 { 1261 return ata_class_disabled(dev->class); 1262 } 1263 1264 static inline unsigned int ata_dev_absent(const struct ata_device *dev) 1265 { 1266 return ata_class_absent(dev->class); 1267 } 1268 1269 /* 1270 * link helpers 1271 */ 1272 static inline int ata_link_max_devices(const struct ata_link *link) 1273 { 1274 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) 1275 return 2; 1276 return 1; 1277 } 1278 1279 static inline int ata_link_active(struct ata_link *link) 1280 { 1281 return ata_tag_valid(link->active_tag) || link->sactive; 1282 } 1283 1284 extern struct ata_link *__ata_port_next_link(struct ata_port *ap, 1285 struct ata_link *link, 1286 bool dev_only); 1287 1288 #define __ata_port_for_each_link(link, ap) \ 1289 for ((link) = __ata_port_next_link((ap), NULL, false); (link); \ 1290 (link) = __ata_port_next_link((ap), (link), false)) 1291 1292 #define ata_port_for_each_link(link, ap) \ 1293 for ((link) = __ata_port_next_link((ap), NULL, true); (link); \ 1294 (link) = __ata_port_next_link((ap), (link), true)) 1295 1296 #define ata_link_for_each_dev(dev, link) \ 1297 for ((dev) = (link)->device; \ 1298 (dev) < (link)->device + ata_link_max_devices(link) || ((dev) = NULL); \ 1299 (dev)++) 1300 1301 #define ata_link_for_each_dev_reverse(dev, link) \ 1302 for ((dev) = (link)->device + ata_link_max_devices(link) - 1; \ 1303 (dev) >= (link)->device || ((dev) = NULL); (dev)--) 1304 1305 /** 1306 * ata_ncq_enabled - Test whether NCQ is enabled 1307 * @dev: ATA device to test for 1308 * 1309 * LOCKING: 1310 * spin_lock_irqsave(host lock) 1311 * 1312 * RETURNS: 1313 * 1 if NCQ is enabled for @dev, 0 otherwise. 1314 */ 1315 static inline int ata_ncq_enabled(struct ata_device *dev) 1316 { 1317 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | 1318 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; 1319 } 1320 1321 static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) 1322 { 1323 qc->tf.ctl |= ATA_NIEN; 1324 } 1325 1326 static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, 1327 unsigned int tag) 1328 { 1329 if (likely(ata_tag_valid(tag))) 1330 return &ap->qcmd[tag]; 1331 return NULL; 1332 } 1333 1334 static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, 1335 unsigned int tag) 1336 { 1337 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); 1338 1339 if (unlikely(!qc) || !ap->ops->error_handler) 1340 return qc; 1341 1342 if ((qc->flags & (ATA_QCFLAG_ACTIVE | 1343 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) 1344 return qc; 1345 1346 return NULL; 1347 } 1348 1349 static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc) 1350 { 1351 return qc->nbytes - min(qc->extrabytes, qc->nbytes); 1352 } 1353 1354 static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) 1355 { 1356 memset(tf, 0, sizeof(*tf)); 1357 1358 tf->ctl = dev->link->ap->ctl; 1359 if (dev->devno == 0) 1360 tf->device = ATA_DEVICE_OBS; 1361 else 1362 tf->device = ATA_DEVICE_OBS | ATA_DEV1; 1363 } 1364 1365 static inline void ata_qc_reinit(struct ata_queued_cmd *qc) 1366 { 1367 qc->dma_dir = DMA_NONE; 1368 qc->sg = NULL; 1369 qc->flags = 0; 1370 qc->cursg = NULL; 1371 qc->cursg_ofs = 0; 1372 qc->nbytes = qc->extrabytes = qc->curbytes = 0; 1373 qc->n_elem = 0; 1374 qc->err_mask = 0; 1375 qc->sect_size = ATA_SECT_SIZE; 1376 1377 ata_tf_init(qc->dev, &qc->tf); 1378 1379 /* init result_tf such that it indicates normal completion */ 1380 qc->result_tf.command = ATA_DRDY; 1381 qc->result_tf.feature = 0; 1382 } 1383 1384 static inline int ata_try_flush_cache(const struct ata_device *dev) 1385 { 1386 return ata_id_wcache_enabled(dev->id) || 1387 ata_id_has_flush(dev->id) || 1388 ata_id_has_flush_ext(dev->id); 1389 } 1390 1391 static inline unsigned int ac_err_mask(u8 status) 1392 { 1393 if (status & (ATA_BUSY | ATA_DRQ)) 1394 return AC_ERR_HSM; 1395 if (status & (ATA_ERR | ATA_DF)) 1396 return AC_ERR_DEV; 1397 return 0; 1398 } 1399 1400 static inline unsigned int __ac_err_mask(u8 status) 1401 { 1402 unsigned int mask = ac_err_mask(status); 1403 if (mask == 0) 1404 return AC_ERR_OTHER; 1405 return mask; 1406 } 1407 1408 static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) 1409 { 1410 return *(struct ata_port **)&host->hostdata[0]; 1411 } 1412 1413 static inline int ata_check_ready(u8 status) 1414 { 1415 if (!(status & ATA_BUSY)) 1416 return 1; 1417 1418 /* 0xff indicates either no device or device not ready */ 1419 if (status == 0xff) 1420 return -ENODEV; 1421 1422 return 0; 1423 } 1424 1425 static inline unsigned long ata_deadline(unsigned long from_jiffies, 1426 unsigned long timeout_msecs) 1427 { 1428 return from_jiffies + msecs_to_jiffies(timeout_msecs); 1429 } 1430 1431 /* Don't open code these in drivers as there are traps. Firstly the range may 1432 change in future hardware and specs, secondly 0xFF means 'no DMA' but is 1433 > UDMA_0. Dyma ddreigiau */ 1434 1435 static inline int ata_using_mwdma(struct ata_device *adev) 1436 { 1437 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4) 1438 return 1; 1439 return 0; 1440 } 1441 1442 static inline int ata_using_udma(struct ata_device *adev) 1443 { 1444 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7) 1445 return 1; 1446 return 0; 1447 } 1448 1449 static inline int ata_dma_enabled(struct ata_device *adev) 1450 { 1451 return (adev->dma_mode == 0xFF ? 0 : 1); 1452 } 1453 1454 /************************************************************************** 1455 * PMP - drivers/ata/libata-pmp.c 1456 */ 1457 #ifdef CONFIG_SATA_PMP 1458 1459 extern const struct ata_port_operations sata_pmp_port_ops; 1460 1461 extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); 1462 extern void sata_pmp_error_handler(struct ata_port *ap); 1463 1464 #else /* CONFIG_SATA_PMP */ 1465 1466 #define sata_pmp_port_ops sata_port_ops 1467 #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer 1468 #define sata_pmp_error_handler ata_std_error_handler 1469 1470 #endif /* CONFIG_SATA_PMP */ 1471 1472 1473 /************************************************************************** 1474 * SFF - drivers/ata/libata-sff.c 1475 */ 1476 #ifdef CONFIG_ATA_SFF 1477 1478 extern const struct ata_port_operations ata_sff_port_ops; 1479 extern const struct ata_port_operations ata_bmdma_port_ops; 1480 1481 /* PIO only, sg_tablesize and dma_boundary limits can be removed */ 1482 #define ATA_PIO_SHT(drv_name) \ 1483 ATA_BASE_SHT(drv_name), \ 1484 .sg_tablesize = LIBATA_MAX_PRD, \ 1485 .dma_boundary = ATA_DMA_BOUNDARY 1486 1487 #define ATA_BMDMA_SHT(drv_name) \ 1488 ATA_BASE_SHT(drv_name), \ 1489 .sg_tablesize = LIBATA_MAX_PRD, \ 1490 .dma_boundary = ATA_DMA_BOUNDARY 1491 1492 extern void ata_sff_qc_prep(struct ata_queued_cmd *qc); 1493 extern void ata_sff_dumb_qc_prep(struct ata_queued_cmd *qc); 1494 extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); 1495 extern u8 ata_sff_check_status(struct ata_port *ap); 1496 extern void ata_sff_pause(struct ata_port *ap); 1497 extern void ata_sff_dma_pause(struct ata_port *ap); 1498 extern int ata_sff_busy_sleep(struct ata_port *ap, 1499 unsigned long timeout_pat, unsigned long timeout); 1500 extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline); 1501 extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); 1502 extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf); 1503 extern void ata_sff_exec_command(struct ata_port *ap, 1504 const struct ata_taskfile *tf); 1505 extern unsigned int ata_sff_data_xfer(struct ata_device *dev, 1506 unsigned char *buf, unsigned int buflen, int rw); 1507 extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev, 1508 unsigned char *buf, unsigned int buflen, int rw); 1509 extern u8 ata_sff_irq_on(struct ata_port *ap); 1510 extern void ata_sff_irq_clear(struct ata_port *ap); 1511 extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, 1512 u8 status, int in_wq); 1513 extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); 1514 extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); 1515 extern unsigned int ata_sff_host_intr(struct ata_port *ap, 1516 struct ata_queued_cmd *qc); 1517 extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); 1518 extern void ata_sff_freeze(struct ata_port *ap); 1519 extern void ata_sff_thaw(struct ata_port *ap); 1520 extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline); 1521 extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, 1522 u8 *r_err); 1523 extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask, 1524 unsigned long deadline); 1525 extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes, 1526 unsigned long deadline); 1527 extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class, 1528 unsigned long deadline); 1529 extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes); 1530 extern void ata_sff_error_handler(struct ata_port *ap); 1531 extern void ata_sff_post_internal_cmd(struct ata_queued_cmd *qc); 1532 extern int ata_sff_port_start(struct ata_port *ap); 1533 extern void ata_sff_std_ports(struct ata_ioports *ioaddr); 1534 extern unsigned long ata_bmdma_mode_filter(struct ata_device *dev, 1535 unsigned long xfer_mask); 1536 extern void ata_bmdma_setup(struct ata_queued_cmd *qc); 1537 extern void ata_bmdma_start(struct ata_queued_cmd *qc); 1538 extern void ata_bmdma_stop(struct ata_queued_cmd *qc); 1539 extern u8 ata_bmdma_status(struct ata_port *ap); 1540 extern void ata_bus_reset(struct ata_port *ap); 1541 1542 #ifdef CONFIG_PCI 1543 extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); 1544 extern int ata_pci_bmdma_init(struct ata_host *host); 1545 extern int ata_pci_sff_init_host(struct ata_host *host); 1546 extern int ata_pci_sff_prepare_host(struct pci_dev *pdev, 1547 const struct ata_port_info * const * ppi, 1548 struct ata_host **r_host); 1549 extern int ata_pci_sff_activate_host(struct ata_host *host, 1550 irq_handler_t irq_handler, 1551 struct scsi_host_template *sht); 1552 extern int ata_pci_sff_init_one(struct pci_dev *pdev, 1553 const struct ata_port_info * const * ppi, 1554 struct scsi_host_template *sht, void *host_priv); 1555 #endif /* CONFIG_PCI */ 1556 1557 /** 1558 * ata_sff_busy_wait - Wait for a port status register 1559 * @ap: Port to wait for. 1560 * @bits: bits that must be clear 1561 * @max: number of 10uS waits to perform 1562 * 1563 * Waits up to max*10 microseconds for the selected bits in the port's 1564 * status register to be cleared. 1565 * Returns final value of status register. 1566 * 1567 * LOCKING: 1568 * Inherited from caller. 1569 */ 1570 static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits, 1571 unsigned int max) 1572 { 1573 u8 status; 1574 1575 do { 1576 udelay(10); 1577 status = ap->ops->sff_check_status(ap); 1578 max--; 1579 } while (status != 0xff && (status & bits) && (max > 0)); 1580 1581 return status; 1582 } 1583 1584 /** 1585 * ata_wait_idle - Wait for a port to be idle. 1586 * @ap: Port to wait for. 1587 * 1588 * Waits up to 10ms for port's BUSY and DRQ signals to clear. 1589 * Returns final value of status register. 1590 * 1591 * LOCKING: 1592 * Inherited from caller. 1593 */ 1594 static inline u8 ata_wait_idle(struct ata_port *ap) 1595 { 1596 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); 1597 1598 #ifdef ATA_DEBUG 1599 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) 1600 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n", 1601 status); 1602 #endif 1603 1604 return status; 1605 } 1606 #endif /* CONFIG_ATA_SFF */ 1607 1608 #endif /* __LINUX_LIBATA_H__ */ 1609