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 /* max tries if error condition is still set after ->error_handler */ 344 ATA_EH_MAX_TRIES = 5, 345 346 /* how hard are we gonna try to probe/recover devices */ 347 ATA_PROBE_MAX_TRIES = 3, 348 ATA_EH_DEV_TRIES = 3, 349 ATA_EH_PMP_TRIES = 5, 350 ATA_EH_PMP_LINK_TRIES = 3, 351 352 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */ 353 354 /* This should match the actual table size of 355 * ata_eh_cmd_timeout_table in libata-eh.c. 356 */ 357 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 5, 358 359 /* Horkage types. May be set by libata or controller on drives 360 (some horkage may be drive/controller pair dependant */ 361 362 ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ 363 ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ 364 ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ 365 ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ 366 ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ 367 ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */ 368 ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ 369 ATA_HORKAGE_IPM = (1 << 7), /* Link PM problems */ 370 ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */ 371 ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */ 372 373 /* DMA mask for user DMA control: User visible values; DO NOT 374 renumber */ 375 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ 376 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ 377 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ 378 379 /* ATAPI command types */ 380 ATAPI_READ = 0, /* READs */ 381 ATAPI_WRITE = 1, /* WRITEs */ 382 ATAPI_READ_CD = 2, /* READ CD [MSF] */ 383 ATAPI_PASS_THRU = 3, /* SAT pass-thru */ 384 ATAPI_MISC = 4, /* the rest */ 385 386 /* Timing constants */ 387 ATA_TIMING_SETUP = (1 << 0), 388 ATA_TIMING_ACT8B = (1 << 1), 389 ATA_TIMING_REC8B = (1 << 2), 390 ATA_TIMING_CYC8B = (1 << 3), 391 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | 392 ATA_TIMING_CYC8B, 393 ATA_TIMING_ACTIVE = (1 << 4), 394 ATA_TIMING_RECOVER = (1 << 5), 395 ATA_TIMING_CYCLE = (1 << 6), 396 ATA_TIMING_UDMA = (1 << 7), 397 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | 398 ATA_TIMING_REC8B | ATA_TIMING_CYC8B | 399 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | 400 ATA_TIMING_CYCLE | ATA_TIMING_UDMA, 401 }; 402 403 enum ata_xfer_mask { 404 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1) 405 << ATA_SHIFT_PIO, 406 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1) 407 << ATA_SHIFT_MWDMA, 408 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1) 409 << ATA_SHIFT_UDMA, 410 }; 411 412 enum hsm_task_states { 413 HSM_ST_IDLE, /* no command on going */ 414 HSM_ST_FIRST, /* (waiting the device to) 415 write CDB or first data block */ 416 HSM_ST, /* (waiting the device to) transfer data */ 417 HSM_ST_LAST, /* (waiting the device to) complete command */ 418 HSM_ST_ERR, /* error */ 419 }; 420 421 enum ata_completion_errors { 422 AC_ERR_DEV = (1 << 0), /* device reported error */ 423 AC_ERR_HSM = (1 << 1), /* host state machine violation */ 424 AC_ERR_TIMEOUT = (1 << 2), /* timeout */ 425 AC_ERR_MEDIA = (1 << 3), /* media error */ 426 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ 427 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ 428 AC_ERR_SYSTEM = (1 << 6), /* system error */ 429 AC_ERR_INVALID = (1 << 7), /* invalid argument */ 430 AC_ERR_OTHER = (1 << 8), /* unknown */ 431 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ 432 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ 433 }; 434 435 /* forward declarations */ 436 struct scsi_device; 437 struct ata_port_operations; 438 struct ata_port; 439 struct ata_link; 440 struct ata_queued_cmd; 441 442 /* typedefs */ 443 typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); 444 typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); 445 typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, 446 unsigned long deadline); 447 typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); 448 449 /* 450 * host pm policy: If you alter this, you also need to alter libata-scsi.c 451 * (for the ascii descriptions) 452 */ 453 enum link_pm { 454 NOT_AVAILABLE, 455 MIN_POWER, 456 MAX_PERFORMANCE, 457 MEDIUM_POWER, 458 }; 459 extern struct device_attribute dev_attr_link_power_management_policy; 460 extern struct device_attribute dev_attr_unload_heads; 461 extern struct device_attribute dev_attr_em_message_type; 462 extern struct device_attribute dev_attr_em_message; 463 extern struct device_attribute dev_attr_sw_activity; 464 465 enum sw_activity { 466 OFF, 467 BLINK_ON, 468 BLINK_OFF, 469 }; 470 471 #ifdef CONFIG_ATA_SFF 472 struct ata_ioports { 473 void __iomem *cmd_addr; 474 void __iomem *data_addr; 475 void __iomem *error_addr; 476 void __iomem *feature_addr; 477 void __iomem *nsect_addr; 478 void __iomem *lbal_addr; 479 void __iomem *lbam_addr; 480 void __iomem *lbah_addr; 481 void __iomem *device_addr; 482 void __iomem *status_addr; 483 void __iomem *command_addr; 484 void __iomem *altstatus_addr; 485 void __iomem *ctl_addr; 486 void __iomem *bmdma_addr; 487 void __iomem *scr_addr; 488 }; 489 #endif /* CONFIG_ATA_SFF */ 490 491 struct ata_host { 492 spinlock_t lock; 493 struct device *dev; 494 void __iomem * const *iomap; 495 unsigned int n_ports; 496 void *private_data; 497 struct ata_port_operations *ops; 498 unsigned long flags; 499 #ifdef CONFIG_ATA_ACPI 500 acpi_handle acpi_handle; 501 #endif 502 struct ata_port *simplex_claimed; /* channel owning the DMA */ 503 struct ata_port *ports[0]; 504 }; 505 506 struct ata_queued_cmd { 507 struct ata_port *ap; 508 struct ata_device *dev; 509 510 struct scsi_cmnd *scsicmd; 511 void (*scsidone)(struct scsi_cmnd *); 512 513 struct ata_taskfile tf; 514 u8 cdb[ATAPI_CDB_LEN]; 515 516 unsigned long flags; /* ATA_QCFLAG_xxx */ 517 unsigned int tag; 518 unsigned int n_elem; 519 520 int dma_dir; 521 522 unsigned int sect_size; 523 524 unsigned int nbytes; 525 unsigned int extrabytes; 526 unsigned int curbytes; 527 528 struct scatterlist *cursg; 529 unsigned int cursg_ofs; 530 531 struct scatterlist sgent; 532 533 struct scatterlist *sg; 534 535 unsigned int err_mask; 536 struct ata_taskfile result_tf; 537 ata_qc_cb_t complete_fn; 538 539 void *private_data; 540 void *lldd_task; 541 }; 542 543 struct ata_port_stats { 544 unsigned long unhandled_irq; 545 unsigned long idle_irq; 546 unsigned long rw_reqbuf; 547 }; 548 549 struct ata_ering_entry { 550 unsigned int eflags; 551 unsigned int err_mask; 552 u64 timestamp; 553 }; 554 555 struct ata_ering { 556 int cursor; 557 struct ata_ering_entry ring[ATA_ERING_SIZE]; 558 }; 559 560 struct ata_device { 561 struct ata_link *link; 562 unsigned int devno; /* 0 or 1 */ 563 unsigned int horkage; /* List of broken features */ 564 unsigned long flags; /* ATA_DFLAG_xxx */ 565 struct scsi_device *sdev; /* attached SCSI device */ 566 #ifdef CONFIG_ATA_ACPI 567 acpi_handle acpi_handle; 568 union acpi_object *gtf_cache; 569 #endif 570 /* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */ 571 u64 n_sectors; /* size of device, if ATA */ 572 unsigned int class; /* ATA_DEV_xxx */ 573 unsigned long unpark_deadline; 574 575 u8 pio_mode; 576 u8 dma_mode; 577 u8 xfer_mode; 578 unsigned int xfer_shift; /* ATA_SHIFT_xxx */ 579 580 unsigned int multi_count; /* sectors count for 581 READ/WRITE MULTIPLE */ 582 unsigned int max_sectors; /* per-device max sectors */ 583 unsigned int cdb_len; 584 585 /* per-dev xfer mask */ 586 unsigned long pio_mask; 587 unsigned long mwdma_mask; 588 unsigned long udma_mask; 589 590 /* for CHS addressing */ 591 u16 cylinders; /* Number of cylinders */ 592 u16 heads; /* Number of heads */ 593 u16 sectors; /* Number of sectors per track */ 594 595 /* error history */ 596 int spdn_cnt; 597 struct ata_ering ering; 598 599 union { 600 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ 601 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ 602 }; 603 }; 604 605 /* Offset into struct ata_device. Fields above it are maintained 606 * acress device init. Fields below are zeroed. 607 */ 608 #define ATA_DEVICE_CLEAR_OFFSET offsetof(struct ata_device, n_sectors) 609 610 struct ata_eh_info { 611 struct ata_device *dev; /* offending device */ 612 u32 serror; /* SError from LLDD */ 613 unsigned int err_mask; /* port-wide err_mask */ 614 unsigned int action; /* ATA_EH_* action mask */ 615 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ 616 unsigned int flags; /* ATA_EHI_* flags */ 617 618 unsigned int probe_mask; 619 620 char desc[ATA_EH_DESC_LEN]; 621 int desc_len; 622 }; 623 624 struct ata_eh_context { 625 struct ata_eh_info i; 626 int tries[ATA_MAX_DEVICES]; 627 int cmd_timeout_idx[ATA_MAX_DEVICES] 628 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE]; 629 unsigned int classes[ATA_MAX_DEVICES]; 630 unsigned int did_probe_mask; 631 unsigned int unloaded_mask; 632 unsigned int saved_ncq_enabled; 633 u8 saved_xfer_mode[ATA_MAX_DEVICES]; 634 /* timestamp for the last reset attempt or success */ 635 unsigned long last_reset; 636 }; 637 638 struct ata_acpi_drive 639 { 640 u32 pio; 641 u32 dma; 642 } __packed; 643 644 struct ata_acpi_gtm { 645 struct ata_acpi_drive drive[2]; 646 u32 flags; 647 } __packed; 648 649 struct ata_link { 650 struct ata_port *ap; 651 int pmp; /* port multiplier port # */ 652 653 unsigned int active_tag; /* active tag on this link */ 654 u32 sactive; /* active NCQ commands */ 655 656 unsigned int flags; /* ATA_LFLAG_xxx */ 657 658 u32 saved_scontrol; /* SControl on probe */ 659 unsigned int hw_sata_spd_limit; 660 unsigned int sata_spd_limit; 661 unsigned int sata_spd; /* current SATA PHY speed */ 662 663 /* record runtime error info, protected by host_set lock */ 664 struct ata_eh_info eh_info; 665 /* EH context */ 666 struct ata_eh_context eh_context; 667 668 struct ata_device device[ATA_MAX_DEVICES]; 669 }; 670 671 struct ata_port { 672 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ 673 struct ata_port_operations *ops; 674 spinlock_t *lock; 675 unsigned long flags; /* ATA_FLAG_xxx */ 676 unsigned int pflags; /* ATA_PFLAG_xxx */ 677 unsigned int print_id; /* user visible unique port ID */ 678 unsigned int port_no; /* 0 based port no. inside the host */ 679 680 struct ata_prd *prd; /* our SG list */ 681 dma_addr_t prd_dma; /* and its DMA mapping */ 682 683 #ifdef CONFIG_ATA_SFF 684 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ 685 #endif /* CONFIG_ATA_SFF */ 686 687 u8 ctl; /* cache of ATA control register */ 688 u8 last_ctl; /* Cache last written value */ 689 unsigned int pio_mask; 690 unsigned int mwdma_mask; 691 unsigned int udma_mask; 692 unsigned int cbl; /* cable type; ATA_CBL_xxx */ 693 694 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; 695 unsigned long qc_allocated; 696 unsigned int qc_active; 697 int nr_active_links; /* #links with active qcs */ 698 699 struct ata_link link; /* host default link */ 700 struct ata_link *slave_link; /* see ata_slave_link_init() */ 701 702 int nr_pmp_links; /* nr of available PMP links */ 703 struct ata_link *pmp_link; /* array of PMP links */ 704 struct ata_link *excl_link; /* for PMP qc exclusion */ 705 706 struct ata_port_stats stats; 707 struct ata_host *host; 708 struct device *dev; 709 710 void *port_task_data; 711 struct delayed_work port_task; 712 struct delayed_work hotplug_task; 713 struct work_struct scsi_rescan_task; 714 715 unsigned int hsm_task_state; 716 717 u32 msg_enable; 718 struct list_head eh_done_q; 719 wait_queue_head_t eh_wait_q; 720 int eh_tries; 721 struct completion park_req_pending; 722 723 pm_message_t pm_mesg; 724 int *pm_result; 725 enum link_pm pm_policy; 726 727 struct timer_list fastdrain_timer; 728 unsigned long fastdrain_cnt; 729 730 int em_message_type; 731 void *private_data; 732 733 #ifdef CONFIG_ATA_ACPI 734 acpi_handle acpi_handle; 735 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */ 736 #endif 737 u8 sector_buf[ATA_SECT_SIZE]; /* owned by EH */ 738 }; 739 740 /* The following initializer overrides a method to NULL whether one of 741 * its parent has the method defined or not. This is equivalent to 742 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant 743 * expression and thus can't be used as an initializer. 744 */ 745 #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT) 746 747 struct ata_port_operations { 748 /* 749 * Command execution 750 */ 751 int (*qc_defer)(struct ata_queued_cmd *qc); 752 int (*check_atapi_dma)(struct ata_queued_cmd *qc); 753 void (*qc_prep)(struct ata_queued_cmd *qc); 754 unsigned int (*qc_issue)(struct ata_queued_cmd *qc); 755 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc); 756 757 /* 758 * Configuration and exception handling 759 */ 760 int (*cable_detect)(struct ata_port *ap); 761 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask); 762 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev); 763 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev); 764 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev); 765 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id); 766 767 void (*dev_config)(struct ata_device *dev); 768 769 void (*freeze)(struct ata_port *ap); 770 void (*thaw)(struct ata_port *ap); 771 ata_prereset_fn_t prereset; 772 ata_reset_fn_t softreset; 773 ata_reset_fn_t hardreset; 774 ata_postreset_fn_t postreset; 775 ata_prereset_fn_t pmp_prereset; 776 ata_reset_fn_t pmp_softreset; 777 ata_reset_fn_t pmp_hardreset; 778 ata_postreset_fn_t pmp_postreset; 779 void (*error_handler)(struct ata_port *ap); 780 void (*post_internal_cmd)(struct ata_queued_cmd *qc); 781 782 /* 783 * Optional features 784 */ 785 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val); 786 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val); 787 void (*pmp_attach)(struct ata_port *ap); 788 void (*pmp_detach)(struct ata_port *ap); 789 int (*enable_pm)(struct ata_port *ap, enum link_pm policy); 790 void (*disable_pm)(struct ata_port *ap); 791 792 /* 793 * Start, stop, suspend and resume 794 */ 795 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg); 796 int (*port_resume)(struct ata_port *ap); 797 int (*port_start)(struct ata_port *ap); 798 void (*port_stop)(struct ata_port *ap); 799 void (*host_stop)(struct ata_host *host); 800 801 #ifdef CONFIG_ATA_SFF 802 /* 803 * SFF / taskfile oriented ops 804 */ 805 void (*sff_dev_select)(struct ata_port *ap, unsigned int device); 806 u8 (*sff_check_status)(struct ata_port *ap); 807 u8 (*sff_check_altstatus)(struct ata_port *ap); 808 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf); 809 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf); 810 void (*sff_exec_command)(struct ata_port *ap, 811 const struct ata_taskfile *tf); 812 unsigned int (*sff_data_xfer)(struct ata_device *dev, 813 unsigned char *buf, unsigned int buflen, int rw); 814 u8 (*sff_irq_on)(struct ata_port *); 815 void (*sff_irq_clear)(struct ata_port *); 816 817 void (*bmdma_setup)(struct ata_queued_cmd *qc); 818 void (*bmdma_start)(struct ata_queued_cmd *qc); 819 void (*bmdma_stop)(struct ata_queued_cmd *qc); 820 u8 (*bmdma_status)(struct ata_port *ap); 821 #endif /* CONFIG_ATA_SFF */ 822 823 ssize_t (*em_show)(struct ata_port *ap, char *buf); 824 ssize_t (*em_store)(struct ata_port *ap, const char *message, 825 size_t size); 826 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf); 827 ssize_t (*sw_activity_store)(struct ata_device *dev, 828 enum sw_activity val); 829 /* 830 * Obsolete 831 */ 832 void (*phy_reset)(struct ata_port *ap); 833 void (*eng_timeout)(struct ata_port *ap); 834 835 /* 836 * ->inherits must be the last field and all the preceding 837 * fields must be pointers. 838 */ 839 const struct ata_port_operations *inherits; 840 }; 841 842 struct ata_port_info { 843 unsigned long flags; 844 unsigned long link_flags; 845 unsigned long pio_mask; 846 unsigned long mwdma_mask; 847 unsigned long udma_mask; 848 struct ata_port_operations *port_ops; 849 void *private_data; 850 }; 851 852 struct ata_timing { 853 unsigned short mode; /* ATA mode */ 854 unsigned short setup; /* t1 */ 855 unsigned short act8b; /* t2 for 8-bit I/O */ 856 unsigned short rec8b; /* t2i for 8-bit I/O */ 857 unsigned short cyc8b; /* t0 for 8-bit I/O */ 858 unsigned short active; /* t2 or tD */ 859 unsigned short recover; /* t2i or tK */ 860 unsigned short cycle; /* t0 */ 861 unsigned short udma; /* t2CYCTYP/2 */ 862 }; 863 864 /* 865 * Core layer - drivers/ata/libata-core.c 866 */ 867 extern const unsigned long sata_deb_timing_normal[]; 868 extern const unsigned long sata_deb_timing_hotplug[]; 869 extern const unsigned long sata_deb_timing_long[]; 870 871 extern struct ata_port_operations ata_dummy_port_ops; 872 extern const struct ata_port_info ata_dummy_port_info; 873 874 static inline const unsigned long * 875 sata_ehc_deb_timing(struct ata_eh_context *ehc) 876 { 877 if (ehc->i.flags & ATA_EHI_HOTPLUGGED) 878 return sata_deb_timing_hotplug; 879 else 880 return sata_deb_timing_normal; 881 } 882 883 static inline int ata_port_is_dummy(struct ata_port *ap) 884 { 885 return ap->ops == &ata_dummy_port_ops; 886 } 887 888 extern void ata_port_probe(struct ata_port *); 889 extern int sata_set_spd(struct ata_link *link); 890 extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); 891 extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, 892 int (*check_ready)(struct ata_link *link)); 893 extern int sata_link_debounce(struct ata_link *link, 894 const unsigned long *params, unsigned long deadline); 895 extern int sata_link_resume(struct ata_link *link, const unsigned long *params, 896 unsigned long deadline); 897 extern int sata_link_hardreset(struct ata_link *link, 898 const unsigned long *timing, unsigned long deadline, 899 bool *online, int (*check_ready)(struct ata_link *)); 900 extern int sata_std_hardreset(struct ata_link *link, unsigned int *class, 901 unsigned long deadline); 902 extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); 903 extern void ata_port_disable(struct ata_port *); 904 905 extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports); 906 extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, 907 const struct ata_port_info * const * ppi, int n_ports); 908 extern int ata_slave_link_init(struct ata_port *ap); 909 extern int ata_host_start(struct ata_host *host); 910 extern int ata_host_register(struct ata_host *host, 911 struct scsi_host_template *sht); 912 extern int ata_host_activate(struct ata_host *host, int irq, 913 irq_handler_t irq_handler, unsigned long irq_flags, 914 struct scsi_host_template *sht); 915 extern void ata_host_detach(struct ata_host *host); 916 extern void ata_host_init(struct ata_host *, struct device *, 917 unsigned long, struct ata_port_operations *); 918 extern int ata_scsi_detect(struct scsi_host_template *sht); 919 extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); 920 extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)); 921 extern void ata_sas_port_destroy(struct ata_port *); 922 extern struct ata_port *ata_sas_port_alloc(struct ata_host *, 923 struct ata_port_info *, struct Scsi_Host *); 924 extern int ata_sas_port_init(struct ata_port *); 925 extern int ata_sas_port_start(struct ata_port *ap); 926 extern void ata_sas_port_stop(struct ata_port *ap); 927 extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); 928 extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), 929 struct ata_port *ap); 930 extern int sata_scr_valid(struct ata_link *link); 931 extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); 932 extern int sata_scr_write(struct ata_link *link, int reg, u32 val); 933 extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); 934 extern bool ata_link_online(struct ata_link *link); 935 extern bool ata_link_offline(struct ata_link *link); 936 #ifdef CONFIG_PM 937 extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg); 938 extern void ata_host_resume(struct ata_host *host); 939 #endif 940 extern int ata_ratelimit(void); 941 extern u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val, 942 unsigned long interval, unsigned long timeout); 943 extern int atapi_cmd_type(u8 opcode); 944 extern void ata_tf_to_fis(const struct ata_taskfile *tf, 945 u8 pmp, int is_cmd, u8 *fis); 946 extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); 947 extern unsigned long ata_pack_xfermask(unsigned long pio_mask, 948 unsigned long mwdma_mask, unsigned long udma_mask); 949 extern void ata_unpack_xfermask(unsigned long xfer_mask, 950 unsigned long *pio_mask, unsigned long *mwdma_mask, 951 unsigned long *udma_mask); 952 extern u8 ata_xfer_mask2mode(unsigned long xfer_mask); 953 extern unsigned long ata_xfer_mode2mask(u8 xfer_mode); 954 extern int ata_xfer_mode2shift(unsigned long xfer_mode); 955 extern const char *ata_mode_string(unsigned long xfer_mask); 956 extern unsigned long ata_id_xfermask(const u16 *id); 957 extern int ata_port_start(struct ata_port *ap); 958 extern int ata_std_qc_defer(struct ata_queued_cmd *qc); 959 extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); 960 extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, 961 unsigned int n_elem); 962 extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); 963 extern void ata_dev_disable(struct ata_device *adev); 964 extern void ata_id_string(const u16 *id, unsigned char *s, 965 unsigned int ofs, unsigned int len); 966 extern void ata_id_c_string(const u16 *id, unsigned char *s, 967 unsigned int ofs, unsigned int len); 968 extern unsigned int ata_do_dev_read_id(struct ata_device *dev, 969 struct ata_taskfile *tf, u16 *id); 970 extern void ata_qc_complete(struct ata_queued_cmd *qc); 971 extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active); 972 extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd, 973 void (*done)(struct scsi_cmnd *)); 974 extern int ata_std_bios_param(struct scsi_device *sdev, 975 struct block_device *bdev, 976 sector_t capacity, int geom[]); 977 extern int ata_scsi_slave_config(struct scsi_device *sdev); 978 extern void ata_scsi_slave_destroy(struct scsi_device *sdev); 979 extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, 980 int queue_depth); 981 extern struct ata_device *ata_dev_pair(struct ata_device *adev); 982 extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); 983 984 extern int ata_cable_40wire(struct ata_port *ap); 985 extern int ata_cable_80wire(struct ata_port *ap); 986 extern int ata_cable_sata(struct ata_port *ap); 987 extern int ata_cable_ignore(struct ata_port *ap); 988 extern int ata_cable_unknown(struct ata_port *ap); 989 990 /* Timing helpers */ 991 extern unsigned int ata_pio_need_iordy(const struct ata_device *); 992 extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); 993 extern int ata_timing_compute(struct ata_device *, unsigned short, 994 struct ata_timing *, int, int); 995 extern void ata_timing_merge(const struct ata_timing *, 996 const struct ata_timing *, struct ata_timing *, 997 unsigned int); 998 extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); 999 1000 /* PCI */ 1001 #ifdef CONFIG_PCI 1002 struct pci_dev; 1003 1004 struct pci_bits { 1005 unsigned int reg; /* PCI config register to read */ 1006 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ 1007 unsigned long mask; 1008 unsigned long val; 1009 }; 1010 1011 extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); 1012 extern void ata_pci_remove_one(struct pci_dev *pdev); 1013 1014 #ifdef CONFIG_PM 1015 extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); 1016 extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); 1017 extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); 1018 extern int ata_pci_device_resume(struct pci_dev *pdev); 1019 #endif /* CONFIG_PM */ 1020 #endif /* CONFIG_PCI */ 1021 1022 /* 1023 * ACPI - drivers/ata/libata-acpi.c 1024 */ 1025 #ifdef CONFIG_ATA_ACPI 1026 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1027 { 1028 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) 1029 return &ap->__acpi_init_gtm; 1030 return NULL; 1031 } 1032 int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); 1033 int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); 1034 unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, 1035 const struct ata_acpi_gtm *gtm); 1036 int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm); 1037 #else 1038 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1039 { 1040 return NULL; 1041 } 1042 1043 static inline int ata_acpi_stm(const struct ata_port *ap, 1044 struct ata_acpi_gtm *stm) 1045 { 1046 return -ENOSYS; 1047 } 1048 1049 static inline int ata_acpi_gtm(const struct ata_port *ap, 1050 struct ata_acpi_gtm *stm) 1051 { 1052 return -ENOSYS; 1053 } 1054 1055 static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, 1056 const struct ata_acpi_gtm *gtm) 1057 { 1058 return 0; 1059 } 1060 1061 static inline int ata_acpi_cbl_80wire(struct ata_port *ap, 1062 const struct ata_acpi_gtm *gtm) 1063 { 1064 return 0; 1065 } 1066 #endif 1067 1068 /* 1069 * EH - drivers/ata/libata-eh.c 1070 */ 1071 extern void ata_port_schedule_eh(struct ata_port *ap); 1072 extern int ata_link_abort(struct ata_link *link); 1073 extern int ata_port_abort(struct ata_port *ap); 1074 extern int ata_port_freeze(struct ata_port *ap); 1075 extern int sata_async_notification(struct ata_port *ap); 1076 1077 extern void ata_eh_freeze_port(struct ata_port *ap); 1078 extern void ata_eh_thaw_port(struct ata_port *ap); 1079 1080 extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); 1081 extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); 1082 extern void ata_eh_analyze_ncq_error(struct ata_link *link); 1083 1084 extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, 1085 ata_reset_fn_t softreset, ata_reset_fn_t hardreset, 1086 ata_postreset_fn_t postreset); 1087 extern void ata_std_error_handler(struct ata_port *ap); 1088 1089 /* 1090 * Base operations to inherit from and initializers for sht 1091 * 1092 * Operations 1093 * 1094 * base : Common to all libata drivers. 1095 * sata : SATA controllers w/ native interface. 1096 * pmp : SATA controllers w/ PMP support. 1097 * sff : SFF ATA controllers w/o BMDMA support. 1098 * bmdma : SFF ATA controllers w/ BMDMA support. 1099 * 1100 * sht initializers 1101 * 1102 * BASE : Common to all libata drivers. The user must set 1103 * sg_tablesize and dma_boundary. 1104 * PIO : SFF ATA controllers w/ only PIO support. 1105 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and 1106 * dma_boundary are set to BMDMA limits. 1107 * NCQ : SATA controllers supporting NCQ. The user must set 1108 * sg_tablesize, dma_boundary and can_queue. 1109 */ 1110 extern const struct ata_port_operations ata_base_port_ops; 1111 extern const struct ata_port_operations sata_port_ops; 1112 extern struct device_attribute *ata_common_sdev_attrs[]; 1113 1114 #define ATA_BASE_SHT(drv_name) \ 1115 .module = THIS_MODULE, \ 1116 .name = drv_name, \ 1117 .ioctl = ata_scsi_ioctl, \ 1118 .queuecommand = ata_scsi_queuecmd, \ 1119 .can_queue = ATA_DEF_QUEUE, \ 1120 .this_id = ATA_SHT_THIS_ID, \ 1121 .cmd_per_lun = ATA_SHT_CMD_PER_LUN, \ 1122 .emulated = ATA_SHT_EMULATED, \ 1123 .use_clustering = ATA_SHT_USE_CLUSTERING, \ 1124 .proc_name = drv_name, \ 1125 .slave_configure = ata_scsi_slave_config, \ 1126 .slave_destroy = ata_scsi_slave_destroy, \ 1127 .bios_param = ata_std_bios_param, \ 1128 .sdev_attrs = ata_common_sdev_attrs 1129 1130 #define ATA_NCQ_SHT(drv_name) \ 1131 ATA_BASE_SHT(drv_name), \ 1132 .change_queue_depth = ata_scsi_change_queue_depth 1133 1134 /* 1135 * PMP helpers 1136 */ 1137 #ifdef CONFIG_SATA_PMP 1138 static inline bool sata_pmp_supported(struct ata_port *ap) 1139 { 1140 return ap->flags & ATA_FLAG_PMP; 1141 } 1142 1143 static inline bool sata_pmp_attached(struct ata_port *ap) 1144 { 1145 return ap->nr_pmp_links != 0; 1146 } 1147 1148 static inline int ata_is_host_link(const struct ata_link *link) 1149 { 1150 return link == &link->ap->link || link == link->ap->slave_link; 1151 } 1152 #else /* CONFIG_SATA_PMP */ 1153 static inline bool sata_pmp_supported(struct ata_port *ap) 1154 { 1155 return false; 1156 } 1157 1158 static inline bool sata_pmp_attached(struct ata_port *ap) 1159 { 1160 return false; 1161 } 1162 1163 static inline int ata_is_host_link(const struct ata_link *link) 1164 { 1165 return 1; 1166 } 1167 #endif /* CONFIG_SATA_PMP */ 1168 1169 static inline int sata_srst_pmp(struct ata_link *link) 1170 { 1171 if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) 1172 return SATA_PMP_CTRL_PORT; 1173 return link->pmp; 1174 } 1175 1176 /* 1177 * printk helpers 1178 */ 1179 #define ata_port_printk(ap, lv, fmt, args...) \ 1180 printk("%sata%u: "fmt, lv, (ap)->print_id , ##args) 1181 1182 #define ata_link_printk(link, lv, fmt, args...) do { \ 1183 if (sata_pmp_attached((link)->ap) || (link)->ap->slave_link) \ 1184 printk("%sata%u.%02u: "fmt, lv, (link)->ap->print_id, \ 1185 (link)->pmp , ##args); \ 1186 else \ 1187 printk("%sata%u: "fmt, lv, (link)->ap->print_id , ##args); \ 1188 } while(0) 1189 1190 #define ata_dev_printk(dev, lv, fmt, args...) \ 1191 printk("%sata%u.%02u: "fmt, lv, (dev)->link->ap->print_id, \ 1192 (dev)->link->pmp + (dev)->devno , ##args) 1193 1194 /* 1195 * ata_eh_info helpers 1196 */ 1197 extern void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) 1198 __attribute__ ((format (printf, 2, 3))); 1199 extern void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) 1200 __attribute__ ((format (printf, 2, 3))); 1201 extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); 1202 1203 static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) 1204 { 1205 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; 1206 ehi->flags |= ATA_EHI_HOTPLUGGED; 1207 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK; 1208 ehi->err_mask |= AC_ERR_ATA_BUS; 1209 } 1210 1211 /* 1212 * port description helpers 1213 */ 1214 extern void ata_port_desc(struct ata_port *ap, const char *fmt, ...) 1215 __attribute__ ((format (printf, 2, 3))); 1216 #ifdef CONFIG_PCI 1217 extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, 1218 const char *name); 1219 #endif 1220 1221 static inline unsigned int ata_tag_valid(unsigned int tag) 1222 { 1223 return (tag < ATA_MAX_QUEUE) ? 1 : 0; 1224 } 1225 1226 static inline unsigned int ata_tag_internal(unsigned int tag) 1227 { 1228 return tag == ATA_TAG_INTERNAL; 1229 } 1230 1231 /* 1232 * device helpers 1233 */ 1234 static inline unsigned int ata_class_enabled(unsigned int class) 1235 { 1236 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || 1237 class == ATA_DEV_PMP || class == ATA_DEV_SEMB; 1238 } 1239 1240 static inline unsigned int ata_class_disabled(unsigned int class) 1241 { 1242 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || 1243 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP; 1244 } 1245 1246 static inline unsigned int ata_class_absent(unsigned int class) 1247 { 1248 return !ata_class_enabled(class) && !ata_class_disabled(class); 1249 } 1250 1251 static inline unsigned int ata_dev_enabled(const struct ata_device *dev) 1252 { 1253 return ata_class_enabled(dev->class); 1254 } 1255 1256 static inline unsigned int ata_dev_disabled(const struct ata_device *dev) 1257 { 1258 return ata_class_disabled(dev->class); 1259 } 1260 1261 static inline unsigned int ata_dev_absent(const struct ata_device *dev) 1262 { 1263 return ata_class_absent(dev->class); 1264 } 1265 1266 /* 1267 * link helpers 1268 */ 1269 static inline int ata_link_max_devices(const struct ata_link *link) 1270 { 1271 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) 1272 return 2; 1273 return 1; 1274 } 1275 1276 static inline int ata_link_active(struct ata_link *link) 1277 { 1278 return ata_tag_valid(link->active_tag) || link->sactive; 1279 } 1280 1281 extern struct ata_link *__ata_port_next_link(struct ata_port *ap, 1282 struct ata_link *link, 1283 bool dev_only); 1284 1285 #define __ata_port_for_each_link(link, ap) \ 1286 for ((link) = __ata_port_next_link((ap), NULL, false); (link); \ 1287 (link) = __ata_port_next_link((ap), (link), false)) 1288 1289 #define ata_port_for_each_link(link, ap) \ 1290 for ((link) = __ata_port_next_link((ap), NULL, true); (link); \ 1291 (link) = __ata_port_next_link((ap), (link), true)) 1292 1293 #define ata_link_for_each_dev(dev, link) \ 1294 for ((dev) = (link)->device; \ 1295 (dev) < (link)->device + ata_link_max_devices(link) || ((dev) = NULL); \ 1296 (dev)++) 1297 1298 #define ata_link_for_each_dev_reverse(dev, link) \ 1299 for ((dev) = (link)->device + ata_link_max_devices(link) - 1; \ 1300 (dev) >= (link)->device || ((dev) = NULL); (dev)--) 1301 1302 /** 1303 * ata_ncq_enabled - Test whether NCQ is enabled 1304 * @dev: ATA device to test for 1305 * 1306 * LOCKING: 1307 * spin_lock_irqsave(host lock) 1308 * 1309 * RETURNS: 1310 * 1 if NCQ is enabled for @dev, 0 otherwise. 1311 */ 1312 static inline int ata_ncq_enabled(struct ata_device *dev) 1313 { 1314 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | 1315 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; 1316 } 1317 1318 static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) 1319 { 1320 qc->tf.ctl |= ATA_NIEN; 1321 } 1322 1323 static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, 1324 unsigned int tag) 1325 { 1326 if (likely(ata_tag_valid(tag))) 1327 return &ap->qcmd[tag]; 1328 return NULL; 1329 } 1330 1331 static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, 1332 unsigned int tag) 1333 { 1334 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); 1335 1336 if (unlikely(!qc) || !ap->ops->error_handler) 1337 return qc; 1338 1339 if ((qc->flags & (ATA_QCFLAG_ACTIVE | 1340 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) 1341 return qc; 1342 1343 return NULL; 1344 } 1345 1346 static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc) 1347 { 1348 return qc->nbytes - min(qc->extrabytes, qc->nbytes); 1349 } 1350 1351 static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) 1352 { 1353 memset(tf, 0, sizeof(*tf)); 1354 1355 tf->ctl = dev->link->ap->ctl; 1356 if (dev->devno == 0) 1357 tf->device = ATA_DEVICE_OBS; 1358 else 1359 tf->device = ATA_DEVICE_OBS | ATA_DEV1; 1360 } 1361 1362 static inline void ata_qc_reinit(struct ata_queued_cmd *qc) 1363 { 1364 qc->dma_dir = DMA_NONE; 1365 qc->sg = NULL; 1366 qc->flags = 0; 1367 qc->cursg = NULL; 1368 qc->cursg_ofs = 0; 1369 qc->nbytes = qc->extrabytes = qc->curbytes = 0; 1370 qc->n_elem = 0; 1371 qc->err_mask = 0; 1372 qc->sect_size = ATA_SECT_SIZE; 1373 1374 ata_tf_init(qc->dev, &qc->tf); 1375 1376 /* init result_tf such that it indicates normal completion */ 1377 qc->result_tf.command = ATA_DRDY; 1378 qc->result_tf.feature = 0; 1379 } 1380 1381 static inline int ata_try_flush_cache(const struct ata_device *dev) 1382 { 1383 return ata_id_wcache_enabled(dev->id) || 1384 ata_id_has_flush(dev->id) || 1385 ata_id_has_flush_ext(dev->id); 1386 } 1387 1388 static inline unsigned int ac_err_mask(u8 status) 1389 { 1390 if (status & (ATA_BUSY | ATA_DRQ)) 1391 return AC_ERR_HSM; 1392 if (status & (ATA_ERR | ATA_DF)) 1393 return AC_ERR_DEV; 1394 return 0; 1395 } 1396 1397 static inline unsigned int __ac_err_mask(u8 status) 1398 { 1399 unsigned int mask = ac_err_mask(status); 1400 if (mask == 0) 1401 return AC_ERR_OTHER; 1402 return mask; 1403 } 1404 1405 static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) 1406 { 1407 return *(struct ata_port **)&host->hostdata[0]; 1408 } 1409 1410 static inline int ata_check_ready(u8 status) 1411 { 1412 if (!(status & ATA_BUSY)) 1413 return 1; 1414 1415 /* 0xff indicates either no device or device not ready */ 1416 if (status == 0xff) 1417 return -ENODEV; 1418 1419 return 0; 1420 } 1421 1422 static inline unsigned long ata_deadline(unsigned long from_jiffies, 1423 unsigned long timeout_msecs) 1424 { 1425 return from_jiffies + msecs_to_jiffies(timeout_msecs); 1426 } 1427 1428 /* Don't open code these in drivers as there are traps. Firstly the range may 1429 change in future hardware and specs, secondly 0xFF means 'no DMA' but is 1430 > UDMA_0. Dyma ddreigiau */ 1431 1432 static inline int ata_using_mwdma(struct ata_device *adev) 1433 { 1434 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4) 1435 return 1; 1436 return 0; 1437 } 1438 1439 static inline int ata_using_udma(struct ata_device *adev) 1440 { 1441 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7) 1442 return 1; 1443 return 0; 1444 } 1445 1446 static inline int ata_dma_enabled(struct ata_device *adev) 1447 { 1448 return (adev->dma_mode == 0xFF ? 0 : 1); 1449 } 1450 1451 /************************************************************************** 1452 * PMP - drivers/ata/libata-pmp.c 1453 */ 1454 #ifdef CONFIG_SATA_PMP 1455 1456 extern const struct ata_port_operations sata_pmp_port_ops; 1457 1458 extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); 1459 extern void sata_pmp_error_handler(struct ata_port *ap); 1460 1461 #else /* CONFIG_SATA_PMP */ 1462 1463 #define sata_pmp_port_ops sata_port_ops 1464 #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer 1465 #define sata_pmp_error_handler ata_std_error_handler 1466 1467 #endif /* CONFIG_SATA_PMP */ 1468 1469 1470 /************************************************************************** 1471 * SFF - drivers/ata/libata-sff.c 1472 */ 1473 #ifdef CONFIG_ATA_SFF 1474 1475 extern const struct ata_port_operations ata_sff_port_ops; 1476 extern const struct ata_port_operations ata_bmdma_port_ops; 1477 1478 /* PIO only, sg_tablesize and dma_boundary limits can be removed */ 1479 #define ATA_PIO_SHT(drv_name) \ 1480 ATA_BASE_SHT(drv_name), \ 1481 .sg_tablesize = LIBATA_MAX_PRD, \ 1482 .dma_boundary = ATA_DMA_BOUNDARY 1483 1484 #define ATA_BMDMA_SHT(drv_name) \ 1485 ATA_BASE_SHT(drv_name), \ 1486 .sg_tablesize = LIBATA_MAX_PRD, \ 1487 .dma_boundary = ATA_DMA_BOUNDARY 1488 1489 extern void ata_sff_qc_prep(struct ata_queued_cmd *qc); 1490 extern void ata_sff_dumb_qc_prep(struct ata_queued_cmd *qc); 1491 extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); 1492 extern u8 ata_sff_check_status(struct ata_port *ap); 1493 extern void ata_sff_pause(struct ata_port *ap); 1494 extern void ata_sff_dma_pause(struct ata_port *ap); 1495 extern int ata_sff_busy_sleep(struct ata_port *ap, 1496 unsigned long timeout_pat, unsigned long timeout); 1497 extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline); 1498 extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); 1499 extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf); 1500 extern void ata_sff_exec_command(struct ata_port *ap, 1501 const struct ata_taskfile *tf); 1502 extern unsigned int ata_sff_data_xfer(struct ata_device *dev, 1503 unsigned char *buf, unsigned int buflen, int rw); 1504 extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev, 1505 unsigned char *buf, unsigned int buflen, int rw); 1506 extern u8 ata_sff_irq_on(struct ata_port *ap); 1507 extern void ata_sff_irq_clear(struct ata_port *ap); 1508 extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, 1509 u8 status, int in_wq); 1510 extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); 1511 extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); 1512 extern unsigned int ata_sff_host_intr(struct ata_port *ap, 1513 struct ata_queued_cmd *qc); 1514 extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); 1515 extern void ata_sff_freeze(struct ata_port *ap); 1516 extern void ata_sff_thaw(struct ata_port *ap); 1517 extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline); 1518 extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, 1519 u8 *r_err); 1520 extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask, 1521 unsigned long deadline); 1522 extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes, 1523 unsigned long deadline); 1524 extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class, 1525 unsigned long deadline); 1526 extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes); 1527 extern void ata_sff_error_handler(struct ata_port *ap); 1528 extern void ata_sff_post_internal_cmd(struct ata_queued_cmd *qc); 1529 extern int ata_sff_port_start(struct ata_port *ap); 1530 extern void ata_sff_std_ports(struct ata_ioports *ioaddr); 1531 extern unsigned long ata_bmdma_mode_filter(struct ata_device *dev, 1532 unsigned long xfer_mask); 1533 extern void ata_bmdma_setup(struct ata_queued_cmd *qc); 1534 extern void ata_bmdma_start(struct ata_queued_cmd *qc); 1535 extern void ata_bmdma_stop(struct ata_queued_cmd *qc); 1536 extern u8 ata_bmdma_status(struct ata_port *ap); 1537 extern void ata_bus_reset(struct ata_port *ap); 1538 1539 #ifdef CONFIG_PCI 1540 extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); 1541 extern int ata_pci_bmdma_init(struct ata_host *host); 1542 extern int ata_pci_sff_init_host(struct ata_host *host); 1543 extern int ata_pci_sff_prepare_host(struct pci_dev *pdev, 1544 const struct ata_port_info * const * ppi, 1545 struct ata_host **r_host); 1546 extern int ata_pci_sff_activate_host(struct ata_host *host, 1547 irq_handler_t irq_handler, 1548 struct scsi_host_template *sht); 1549 extern int ata_pci_sff_init_one(struct pci_dev *pdev, 1550 const struct ata_port_info * const * ppi, 1551 struct scsi_host_template *sht, void *host_priv); 1552 #endif /* CONFIG_PCI */ 1553 1554 /** 1555 * ata_sff_busy_wait - Wait for a port status register 1556 * @ap: Port to wait for. 1557 * @bits: bits that must be clear 1558 * @max: number of 10uS waits to perform 1559 * 1560 * Waits up to max*10 microseconds for the selected bits in the port's 1561 * status register to be cleared. 1562 * Returns final value of status register. 1563 * 1564 * LOCKING: 1565 * Inherited from caller. 1566 */ 1567 static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits, 1568 unsigned int max) 1569 { 1570 u8 status; 1571 1572 do { 1573 udelay(10); 1574 status = ap->ops->sff_check_status(ap); 1575 max--; 1576 } while (status != 0xff && (status & bits) && (max > 0)); 1577 1578 return status; 1579 } 1580 1581 /** 1582 * ata_wait_idle - Wait for a port to be idle. 1583 * @ap: Port to wait for. 1584 * 1585 * Waits up to 10ms for port's BUSY and DRQ signals to clear. 1586 * Returns final value of status register. 1587 * 1588 * LOCKING: 1589 * Inherited from caller. 1590 */ 1591 static inline u8 ata_wait_idle(struct ata_port *ap) 1592 { 1593 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); 1594 1595 #ifdef ATA_DEBUG 1596 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) 1597 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n", 1598 status); 1599 #endif 1600 1601 return status; 1602 } 1603 #endif /* CONFIG_ATA_SFF */ 1604 1605 #endif /* __LINUX_LIBATA_H__ */ 1606