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 #include <linux/sched.h> 41 42 /* 43 * Define if arch has non-standard setup. This is a _PCI_ standard 44 * not a legacy or ISA standard. 45 */ 46 #ifdef CONFIG_ATA_NONSTANDARD 47 #include <asm/libata-portmap.h> 48 #else 49 #define ATA_PRIMARY_IRQ(dev) 14 50 #define ATA_SECONDARY_IRQ(dev) 15 51 #endif 52 53 /* 54 * compile-time options: to be removed as soon as all the drivers are 55 * converted to the new debugging mechanism 56 */ 57 #undef ATA_DEBUG /* debugging output */ 58 #undef ATA_VERBOSE_DEBUG /* yet more debugging output */ 59 #undef ATA_IRQ_TRAP /* define to ack screaming irqs */ 60 #undef ATA_NDEBUG /* define to disable quick runtime checks */ 61 62 63 /* note: prints function name for you */ 64 #ifdef ATA_DEBUG 65 #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) 66 #ifdef ATA_VERBOSE_DEBUG 67 #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) 68 #else 69 #define VPRINTK(fmt, args...) 70 #endif /* ATA_VERBOSE_DEBUG */ 71 #else 72 #define DPRINTK(fmt, args...) 73 #define VPRINTK(fmt, args...) 74 #endif /* ATA_DEBUG */ 75 76 #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args) 77 78 #define ata_print_version_once(dev, version) \ 79 ({ \ 80 static bool __print_once; \ 81 \ 82 if (!__print_once) { \ 83 __print_once = true; \ 84 ata_print_version(dev, version); \ 85 } \ 86 }) 87 88 /* NEW: debug levels */ 89 #define HAVE_LIBATA_MSG 1 90 91 enum { 92 ATA_MSG_DRV = 0x0001, 93 ATA_MSG_INFO = 0x0002, 94 ATA_MSG_PROBE = 0x0004, 95 ATA_MSG_WARN = 0x0008, 96 ATA_MSG_MALLOC = 0x0010, 97 ATA_MSG_CTL = 0x0020, 98 ATA_MSG_INTR = 0x0040, 99 ATA_MSG_ERR = 0x0080, 100 }; 101 102 #define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV) 103 #define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO) 104 #define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE) 105 #define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN) 106 #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC) 107 #define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL) 108 #define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR) 109 #define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR) 110 111 static inline u32 ata_msg_init(int dval, int default_msg_enable_bits) 112 { 113 if (dval < 0 || dval >= (sizeof(u32) * 8)) 114 return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */ 115 if (!dval) 116 return 0; 117 return (1 << dval) - 1; 118 } 119 120 /* defines only for the constants which don't work well as enums */ 121 #define ATA_TAG_POISON 0xfafbfcfdU 122 123 enum { 124 /* various global constants */ 125 LIBATA_MAX_PRD = ATA_MAX_PRD / 2, 126 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */ 127 ATA_DEF_QUEUE = 1, 128 /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */ 129 ATA_MAX_QUEUE = 32, 130 ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1, 131 ATA_SHORT_PAUSE = 16, 132 133 ATAPI_MAX_DRAIN = 16 << 10, 134 135 ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1, 136 137 ATA_SHT_EMULATED = 1, 138 ATA_SHT_THIS_ID = -1, 139 ATA_SHT_USE_CLUSTERING = 1, 140 141 /* struct ata_taskfile flags */ 142 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */ 143 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */ 144 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */ 145 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */ 146 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */ 147 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */ 148 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */ 149 150 /* struct ata_device stuff */ 151 ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */ 152 ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */ 153 ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */ 154 ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */ 155 ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */ 156 ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ 157 ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ 158 ATA_DFLAG_AN = (1 << 7), /* AN configured */ 159 ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */ 160 ATA_DFLAG_CFG_MASK = (1 << 12) - 1, 161 162 ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */ 163 ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */ 164 ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */ 165 ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */ 166 ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */ 167 ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */ 168 ATA_DFLAG_NCQ_SEND_RECV = (1 << 19), /* device supports NCQ SEND and RECV */ 169 ATA_DFLAG_NCQ_PRIO = (1 << 20), /* device supports NCQ priority */ 170 ATA_DFLAG_NCQ_PRIO_ENABLE = (1 << 21), /* Priority cmds sent to dev */ 171 ATA_DFLAG_INIT_MASK = (1 << 24) - 1, 172 173 ATA_DFLAG_DETACH = (1 << 24), 174 ATA_DFLAG_DETACHED = (1 << 25), 175 176 ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */ 177 ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */ 178 ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */ 179 ATA_DFLAG_D_SENSE = (1 << 29), /* Descriptor sense requested */ 180 ATA_DFLAG_ZAC = (1 << 30), /* ZAC device */ 181 182 ATA_DEV_UNKNOWN = 0, /* unknown device */ 183 ATA_DEV_ATA = 1, /* ATA device */ 184 ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ 185 ATA_DEV_ATAPI = 3, /* ATAPI device */ 186 ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ 187 ATA_DEV_PMP = 5, /* SATA port multiplier */ 188 ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ 189 ATA_DEV_SEMB = 7, /* SEMB */ 190 ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ 191 ATA_DEV_ZAC = 9, /* ZAC device */ 192 ATA_DEV_ZAC_UNSUP = 10, /* ZAC device (unsupported) */ 193 ATA_DEV_NONE = 11, /* no device */ 194 195 /* struct ata_link flags */ 196 ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */ 197 ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ 198 ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ 199 ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ 200 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, 201 ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ 202 ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ 203 ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */ 204 ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */ 205 ATA_LFLAG_RST_ONCE = (1 << 9), /* limit recovery to one reset */ 206 ATA_LFLAG_CHANGED = (1 << 10), /* LPM state changed on this link */ 207 ATA_LFLAG_NO_DB_DELAY = (1 << 11), /* no debounce delay on link resume */ 208 209 /* struct ata_port flags */ 210 ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ 211 /* (doesn't imply presence) */ 212 ATA_FLAG_SATA = (1 << 1), 213 ATA_FLAG_NO_LOG_PAGE = (1 << 5), /* do not issue log page read */ 214 ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ 215 ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ 216 ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ 217 ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD 218 * doesn't handle PIO interrupts */ 219 ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ 220 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */ 221 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */ 222 ATA_FLAG_DEBUGMSG = (1 << 13), 223 ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */ 224 ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ 225 ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ 226 ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ 227 ATA_FLAG_AN = (1 << 18), /* controller supports AN */ 228 ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ 229 ATA_FLAG_FPDMA_AUX = (1 << 20), /* controller supports H2DFIS aux field */ 230 ATA_FLAG_EM = (1 << 21), /* driver supports enclosure 231 * management */ 232 ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity 233 * led */ 234 ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */ 235 ATA_FLAG_SAS_HOST = (1 << 24), /* SAS host */ 236 237 /* bits 24:31 of ap->flags are reserved for LLD specific flags */ 238 239 240 /* struct ata_port pflags */ 241 ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ 242 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ 243 ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ 244 ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ 245 ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ 246 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ 247 ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ 248 ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ 249 ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */ 250 ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */ 251 252 ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ 253 ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ 254 ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */ 255 256 ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */ 257 ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */ 258 ATA_PFLAG_EXTERNAL = (1 << 22), /* eSATA/external port */ 259 260 /* struct ata_queued_cmd flags */ 261 ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ 262 ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */ 263 ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ 264 ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ 265 ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ 266 ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */ 267 ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */ 268 269 ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */ 270 ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ 271 ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ 272 273 /* host set flags */ 274 ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ 275 ATA_HOST_STARTED = (1 << 1), /* Host started */ 276 ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */ 277 ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */ 278 279 /* bits 24:31 of host->flags are reserved for LLD specific flags */ 280 281 /* various lengths of time */ 282 ATA_TMOUT_BOOT = 30000, /* heuristic */ 283 ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */ 284 ATA_TMOUT_INTERNAL_QUICK = 5000, 285 ATA_TMOUT_MAX_PARK = 30000, 286 287 /* 288 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s 289 * is too much without parallel probing. Use 2s if parallel 290 * probing is available, 800ms otherwise. 291 */ 292 ATA_TMOUT_FF_WAIT_LONG = 2000, 293 ATA_TMOUT_FF_WAIT = 800, 294 295 /* Spec mandates to wait for ">= 2ms" before checking status 296 * after reset. We wait 150ms, because that was the magic 297 * delay used for ATAPI devices in Hale Landis's ATADRVR, for 298 * the period of time between when the ATA command register is 299 * written, and then status is checked. Because waiting for 300 * "a while" before checking status is fine, post SRST, we 301 * perform this magic delay here as well. 302 * 303 * Old drivers/ide uses the 2mS rule and then waits for ready. 304 */ 305 ATA_WAIT_AFTER_RESET = 150, 306 307 /* If PMP is supported, we have to do follow-up SRST. As some 308 * PMPs don't send D2H Reg FIS after hardreset, LLDs are 309 * advised to wait only for the following duration before 310 * doing SRST. 311 */ 312 ATA_TMOUT_PMP_SRST_WAIT = 5000, 313 314 /* When the LPM policy is set to ATA_LPM_MAX_POWER, there might 315 * be a spurious PHY event, so ignore the first PHY event that 316 * occurs within 10s after the policy change. 317 */ 318 ATA_TMOUT_SPURIOUS_PHY = 10000, 319 320 /* ATA bus states */ 321 BUS_UNKNOWN = 0, 322 BUS_DMA = 1, 323 BUS_IDLE = 2, 324 BUS_NOINTR = 3, 325 BUS_NODATA = 4, 326 BUS_TIMER = 5, 327 BUS_PIO = 6, 328 BUS_EDD = 7, 329 BUS_IDENTIFY = 8, 330 BUS_PACKET = 9, 331 332 /* SATA port states */ 333 PORT_UNKNOWN = 0, 334 PORT_ENABLED = 1, 335 PORT_DISABLED = 2, 336 337 /* encoding various smaller bitmaps into a single 338 * unsigned long bitmap 339 */ 340 ATA_NR_PIO_MODES = 7, 341 ATA_NR_MWDMA_MODES = 5, 342 ATA_NR_UDMA_MODES = 8, 343 344 ATA_SHIFT_PIO = 0, 345 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES, 346 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES, 347 ATA_SHIFT_PRIO = 6, 348 349 ATA_PRIO_HIGH = 2, 350 /* size of buffer to pad xfers ending on unaligned boundaries */ 351 ATA_DMA_PAD_SZ = 4, 352 353 /* ering size */ 354 ATA_ERING_SIZE = 32, 355 356 /* return values for ->qc_defer */ 357 ATA_DEFER_LINK = 1, 358 ATA_DEFER_PORT = 2, 359 360 /* desc_len for ata_eh_info and context */ 361 ATA_EH_DESC_LEN = 80, 362 363 /* reset / recovery action types */ 364 ATA_EH_REVALIDATE = (1 << 0), 365 ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */ 366 ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */ 367 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, 368 ATA_EH_ENABLE_LINK = (1 << 3), 369 ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */ 370 371 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK, 372 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET | 373 ATA_EH_ENABLE_LINK, 374 375 /* ata_eh_info->flags */ 376 ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ 377 ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ 378 ATA_EHI_QUIET = (1 << 3), /* be quiet */ 379 ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */ 380 381 ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ 382 ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ 383 ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ 384 ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ 385 ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */ 386 387 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, 388 389 /* mask of flags to transfer *to* the slave link */ 390 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, 391 392 /* max tries if error condition is still set after ->error_handler */ 393 ATA_EH_MAX_TRIES = 5, 394 395 /* sometimes resuming a link requires several retries */ 396 ATA_LINK_RESUME_TRIES = 5, 397 398 /* how hard are we gonna try to probe/recover devices */ 399 ATA_PROBE_MAX_TRIES = 3, 400 ATA_EH_DEV_TRIES = 3, 401 ATA_EH_PMP_TRIES = 5, 402 ATA_EH_PMP_LINK_TRIES = 3, 403 404 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */ 405 406 /* This should match the actual table size of 407 * ata_eh_cmd_timeout_table in libata-eh.c. 408 */ 409 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6, 410 411 /* Horkage types. May be set by libata or controller on drives 412 (some horkage may be drive/controller pair dependent */ 413 414 ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ 415 ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ 416 ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ 417 ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ 418 ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ 419 ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */ 420 ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ 421 ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */ 422 ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */ 423 ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */ 424 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands 425 not multiple of 16 bytes */ 426 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */ 427 ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */ 428 ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */ 429 ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */ 430 ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */ 431 ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17), /* Set max sects to 65535 */ 432 ATA_HORKAGE_ATAPI_DMADIR = (1 << 18), /* device requires dmadir */ 433 ATA_HORKAGE_NO_NCQ_TRIM = (1 << 19), /* don't use queued TRIM */ 434 ATA_HORKAGE_NOLPM = (1 << 20), /* don't use LPM */ 435 ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21), /* some WDs have broken LPM */ 436 ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),/* guarantees zero after trim */ 437 ATA_HORKAGE_NO_NCQ_LOG = (1 << 23), /* don't use NCQ for log read */ 438 ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */ 439 ATA_HORKAGE_MAX_SEC_1024 = (1 << 25), /* Limit max sects to 1024 */ 440 441 /* DMA mask for user DMA control: User visible values; DO NOT 442 renumber */ 443 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ 444 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ 445 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ 446 447 /* ATAPI command types */ 448 ATAPI_READ = 0, /* READs */ 449 ATAPI_WRITE = 1, /* WRITEs */ 450 ATAPI_READ_CD = 2, /* READ CD [MSF] */ 451 ATAPI_PASS_THRU = 3, /* SAT pass-thru */ 452 ATAPI_MISC = 4, /* the rest */ 453 454 /* Timing constants */ 455 ATA_TIMING_SETUP = (1 << 0), 456 ATA_TIMING_ACT8B = (1 << 1), 457 ATA_TIMING_REC8B = (1 << 2), 458 ATA_TIMING_CYC8B = (1 << 3), 459 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | 460 ATA_TIMING_CYC8B, 461 ATA_TIMING_ACTIVE = (1 << 4), 462 ATA_TIMING_RECOVER = (1 << 5), 463 ATA_TIMING_DMACK_HOLD = (1 << 6), 464 ATA_TIMING_CYCLE = (1 << 7), 465 ATA_TIMING_UDMA = (1 << 8), 466 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | 467 ATA_TIMING_REC8B | ATA_TIMING_CYC8B | 468 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | 469 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE | 470 ATA_TIMING_UDMA, 471 472 /* ACPI constants */ 473 ATA_ACPI_FILTER_SETXFER = 1 << 0, 474 ATA_ACPI_FILTER_LOCK = 1 << 1, 475 ATA_ACPI_FILTER_DIPM = 1 << 2, 476 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */ 477 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */ 478 479 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER | 480 ATA_ACPI_FILTER_LOCK | 481 ATA_ACPI_FILTER_DIPM, 482 }; 483 484 enum ata_xfer_mask { 485 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1) 486 << ATA_SHIFT_PIO, 487 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1) 488 << ATA_SHIFT_MWDMA, 489 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1) 490 << ATA_SHIFT_UDMA, 491 }; 492 493 enum hsm_task_states { 494 HSM_ST_IDLE, /* no command on going */ 495 HSM_ST_FIRST, /* (waiting the device to) 496 write CDB or first data block */ 497 HSM_ST, /* (waiting the device to) transfer data */ 498 HSM_ST_LAST, /* (waiting the device to) complete command */ 499 HSM_ST_ERR, /* error */ 500 }; 501 502 enum ata_completion_errors { 503 AC_ERR_DEV = (1 << 0), /* device reported error */ 504 AC_ERR_HSM = (1 << 1), /* host state machine violation */ 505 AC_ERR_TIMEOUT = (1 << 2), /* timeout */ 506 AC_ERR_MEDIA = (1 << 3), /* media error */ 507 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ 508 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ 509 AC_ERR_SYSTEM = (1 << 6), /* system error */ 510 AC_ERR_INVALID = (1 << 7), /* invalid argument */ 511 AC_ERR_OTHER = (1 << 8), /* unknown */ 512 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ 513 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ 514 }; 515 516 /* 517 * Link power management policy: If you alter this, you also need to 518 * alter libata-scsi.c (for the ascii descriptions) 519 */ 520 enum ata_lpm_policy { 521 ATA_LPM_UNKNOWN, 522 ATA_LPM_MAX_POWER, 523 ATA_LPM_MED_POWER, 524 ATA_LPM_MIN_POWER, 525 }; 526 527 enum ata_lpm_hints { 528 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */ 529 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */ 530 ATA_LPM_WAKE_ONLY = (1 << 2), /* only wake up link */ 531 }; 532 533 /* forward declarations */ 534 struct scsi_device; 535 struct ata_port_operations; 536 struct ata_port; 537 struct ata_link; 538 struct ata_queued_cmd; 539 540 /* typedefs */ 541 typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); 542 typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); 543 typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, 544 unsigned long deadline); 545 typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); 546 547 extern struct device_attribute dev_attr_link_power_management_policy; 548 extern struct device_attribute dev_attr_unload_heads; 549 extern struct device_attribute dev_attr_ncq_prio_enable; 550 extern struct device_attribute dev_attr_em_message_type; 551 extern struct device_attribute dev_attr_em_message; 552 extern struct device_attribute dev_attr_sw_activity; 553 554 enum sw_activity { 555 OFF, 556 BLINK_ON, 557 BLINK_OFF, 558 }; 559 560 struct ata_taskfile { 561 unsigned long flags; /* ATA_TFLAG_xxx */ 562 u8 protocol; /* ATA_PROT_xxx */ 563 564 u8 ctl; /* control reg */ 565 566 u8 hob_feature; /* additional data */ 567 u8 hob_nsect; /* to support LBA48 */ 568 u8 hob_lbal; 569 u8 hob_lbam; 570 u8 hob_lbah; 571 572 u8 feature; 573 u8 nsect; 574 u8 lbal; 575 u8 lbam; 576 u8 lbah; 577 578 u8 device; 579 580 u8 command; /* IO operation */ 581 582 u32 auxiliary; /* auxiliary field */ 583 /* from SATA 3.1 and */ 584 /* ATA-8 ACS-3 */ 585 }; 586 587 #ifdef CONFIG_ATA_SFF 588 struct ata_ioports { 589 void __iomem *cmd_addr; 590 void __iomem *data_addr; 591 void __iomem *error_addr; 592 void __iomem *feature_addr; 593 void __iomem *nsect_addr; 594 void __iomem *lbal_addr; 595 void __iomem *lbam_addr; 596 void __iomem *lbah_addr; 597 void __iomem *device_addr; 598 void __iomem *status_addr; 599 void __iomem *command_addr; 600 void __iomem *altstatus_addr; 601 void __iomem *ctl_addr; 602 #ifdef CONFIG_ATA_BMDMA 603 void __iomem *bmdma_addr; 604 #endif /* CONFIG_ATA_BMDMA */ 605 void __iomem *scr_addr; 606 }; 607 #endif /* CONFIG_ATA_SFF */ 608 609 struct ata_host { 610 spinlock_t lock; 611 struct device *dev; 612 void __iomem * const *iomap; 613 unsigned int n_ports; 614 unsigned int n_tags; /* nr of NCQ tags */ 615 void *private_data; 616 struct ata_port_operations *ops; 617 unsigned long flags; 618 619 struct mutex eh_mutex; 620 struct task_struct *eh_owner; 621 622 struct ata_port *simplex_claimed; /* channel owning the DMA */ 623 struct ata_port *ports[0]; 624 }; 625 626 struct ata_queued_cmd { 627 struct ata_port *ap; 628 struct ata_device *dev; 629 630 struct scsi_cmnd *scsicmd; 631 void (*scsidone)(struct scsi_cmnd *); 632 633 struct ata_taskfile tf; 634 u8 cdb[ATAPI_CDB_LEN]; 635 636 unsigned long flags; /* ATA_QCFLAG_xxx */ 637 unsigned int tag; 638 unsigned int n_elem; 639 unsigned int orig_n_elem; 640 641 int dma_dir; 642 643 unsigned int sect_size; 644 645 unsigned int nbytes; 646 unsigned int extrabytes; 647 unsigned int curbytes; 648 649 struct scatterlist sgent; 650 651 struct scatterlist *sg; 652 653 struct scatterlist *cursg; 654 unsigned int cursg_ofs; 655 656 unsigned int err_mask; 657 struct ata_taskfile result_tf; 658 ata_qc_cb_t complete_fn; 659 660 void *private_data; 661 void *lldd_task; 662 }; 663 664 struct ata_port_stats { 665 unsigned long unhandled_irq; 666 unsigned long idle_irq; 667 unsigned long rw_reqbuf; 668 }; 669 670 struct ata_ering_entry { 671 unsigned int eflags; 672 unsigned int err_mask; 673 u64 timestamp; 674 }; 675 676 struct ata_ering { 677 int cursor; 678 struct ata_ering_entry ring[ATA_ERING_SIZE]; 679 }; 680 681 struct ata_device { 682 struct ata_link *link; 683 unsigned int devno; /* 0 or 1 */ 684 unsigned int horkage; /* List of broken features */ 685 unsigned long flags; /* ATA_DFLAG_xxx */ 686 struct scsi_device *sdev; /* attached SCSI device */ 687 void *private_data; 688 #ifdef CONFIG_ATA_ACPI 689 union acpi_object *gtf_cache; 690 unsigned int gtf_filter; 691 #endif 692 #ifdef CONFIG_SATA_ZPODD 693 void *zpodd; 694 #endif 695 struct device tdev; 696 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */ 697 u64 n_sectors; /* size of device, if ATA */ 698 u64 n_native_sectors; /* native size, if ATA */ 699 unsigned int class; /* ATA_DEV_xxx */ 700 unsigned long unpark_deadline; 701 702 u8 pio_mode; 703 u8 dma_mode; 704 u8 xfer_mode; 705 unsigned int xfer_shift; /* ATA_SHIFT_xxx */ 706 707 unsigned int multi_count; /* sectors count for 708 READ/WRITE MULTIPLE */ 709 unsigned int max_sectors; /* per-device max sectors */ 710 unsigned int cdb_len; 711 712 /* per-dev xfer mask */ 713 unsigned long pio_mask; 714 unsigned long mwdma_mask; 715 unsigned long udma_mask; 716 717 /* for CHS addressing */ 718 u16 cylinders; /* Number of cylinders */ 719 u16 heads; /* Number of heads */ 720 u16 sectors; /* Number of sectors per track */ 721 722 union { 723 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ 724 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ 725 } ____cacheline_aligned; 726 727 /* DEVSLP Timing Variables from Identify Device Data Log */ 728 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE]; 729 730 /* NCQ send and receive log subcommand support */ 731 u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE]; 732 u8 ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_SIZE]; 733 734 /* ZAC zone configuration */ 735 u32 zac_zoned_cap; 736 u32 zac_zones_optimal_open; 737 u32 zac_zones_optimal_nonseq; 738 u32 zac_zones_max_open; 739 740 /* error history */ 741 int spdn_cnt; 742 /* ering is CLEAR_END, read comment above CLEAR_END */ 743 struct ata_ering ering; 744 }; 745 746 /* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are 747 * cleared to zero on ata_dev_init(). 748 */ 749 #define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors) 750 #define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering) 751 752 struct ata_eh_info { 753 struct ata_device *dev; /* offending device */ 754 u32 serror; /* SError from LLDD */ 755 unsigned int err_mask; /* port-wide err_mask */ 756 unsigned int action; /* ATA_EH_* action mask */ 757 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ 758 unsigned int flags; /* ATA_EHI_* flags */ 759 760 unsigned int probe_mask; 761 762 char desc[ATA_EH_DESC_LEN]; 763 int desc_len; 764 }; 765 766 struct ata_eh_context { 767 struct ata_eh_info i; 768 int tries[ATA_MAX_DEVICES]; 769 int cmd_timeout_idx[ATA_MAX_DEVICES] 770 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE]; 771 unsigned int classes[ATA_MAX_DEVICES]; 772 unsigned int did_probe_mask; 773 unsigned int unloaded_mask; 774 unsigned int saved_ncq_enabled; 775 u8 saved_xfer_mode[ATA_MAX_DEVICES]; 776 /* timestamp for the last reset attempt or success */ 777 unsigned long last_reset; 778 }; 779 780 struct ata_acpi_drive 781 { 782 u32 pio; 783 u32 dma; 784 } __packed; 785 786 struct ata_acpi_gtm { 787 struct ata_acpi_drive drive[2]; 788 u32 flags; 789 } __packed; 790 791 struct ata_link { 792 struct ata_port *ap; 793 int pmp; /* port multiplier port # */ 794 795 struct device tdev; 796 unsigned int active_tag; /* active tag on this link */ 797 u32 sactive; /* active NCQ commands */ 798 799 unsigned int flags; /* ATA_LFLAG_xxx */ 800 801 u32 saved_scontrol; /* SControl on probe */ 802 unsigned int hw_sata_spd_limit; 803 unsigned int sata_spd_limit; 804 unsigned int sata_spd; /* current SATA PHY speed */ 805 enum ata_lpm_policy lpm_policy; 806 807 /* record runtime error info, protected by host_set lock */ 808 struct ata_eh_info eh_info; 809 /* EH context */ 810 struct ata_eh_context eh_context; 811 812 struct ata_device device[ATA_MAX_DEVICES]; 813 814 unsigned long last_lpm_change; /* when last LPM change happened */ 815 }; 816 #define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag) 817 #define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0]) 818 819 struct ata_port { 820 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ 821 struct ata_port_operations *ops; 822 spinlock_t *lock; 823 /* Flags owned by the EH context. Only EH should touch these once the 824 port is active */ 825 unsigned long flags; /* ATA_FLAG_xxx */ 826 /* Flags that change dynamically, protected by ap->lock */ 827 unsigned int pflags; /* ATA_PFLAG_xxx */ 828 unsigned int print_id; /* user visible unique port ID */ 829 unsigned int local_port_no; /* host local port num */ 830 unsigned int port_no; /* 0 based port no. inside the host */ 831 832 #ifdef CONFIG_ATA_SFF 833 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ 834 u8 ctl; /* cache of ATA control register */ 835 u8 last_ctl; /* Cache last written value */ 836 struct ata_link* sff_pio_task_link; /* link currently used */ 837 struct delayed_work sff_pio_task; 838 #ifdef CONFIG_ATA_BMDMA 839 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */ 840 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */ 841 #endif /* CONFIG_ATA_BMDMA */ 842 #endif /* CONFIG_ATA_SFF */ 843 844 unsigned int pio_mask; 845 unsigned int mwdma_mask; 846 unsigned int udma_mask; 847 unsigned int cbl; /* cable type; ATA_CBL_xxx */ 848 849 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; 850 unsigned long sas_tag_allocated; /* for sas tag allocation only */ 851 unsigned int qc_active; 852 int nr_active_links; /* #links with active qcs */ 853 unsigned int sas_last_tag; /* track next tag hw expects */ 854 855 struct ata_link link; /* host default link */ 856 struct ata_link *slave_link; /* see ata_slave_link_init() */ 857 858 int nr_pmp_links; /* nr of available PMP links */ 859 struct ata_link *pmp_link; /* array of PMP links */ 860 struct ata_link *excl_link; /* for PMP qc exclusion */ 861 862 struct ata_port_stats stats; 863 struct ata_host *host; 864 struct device *dev; 865 struct device tdev; 866 867 struct mutex scsi_scan_mutex; 868 struct delayed_work hotplug_task; 869 struct work_struct scsi_rescan_task; 870 871 unsigned int hsm_task_state; 872 873 u32 msg_enable; 874 struct list_head eh_done_q; 875 wait_queue_head_t eh_wait_q; 876 int eh_tries; 877 struct completion park_req_pending; 878 879 pm_message_t pm_mesg; 880 enum ata_lpm_policy target_lpm_policy; 881 882 struct timer_list fastdrain_timer; 883 unsigned long fastdrain_cnt; 884 885 int em_message_type; 886 void *private_data; 887 888 #ifdef CONFIG_ATA_ACPI 889 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */ 890 #endif 891 /* owned by EH */ 892 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned; 893 }; 894 895 /* The following initializer overrides a method to NULL whether one of 896 * its parent has the method defined or not. This is equivalent to 897 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant 898 * expression and thus can't be used as an initializer. 899 */ 900 #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT) 901 902 struct ata_port_operations { 903 /* 904 * Command execution 905 */ 906 int (*qc_defer)(struct ata_queued_cmd *qc); 907 int (*check_atapi_dma)(struct ata_queued_cmd *qc); 908 void (*qc_prep)(struct ata_queued_cmd *qc); 909 unsigned int (*qc_issue)(struct ata_queued_cmd *qc); 910 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc); 911 912 /* 913 * Configuration and exception handling 914 */ 915 int (*cable_detect)(struct ata_port *ap); 916 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask); 917 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev); 918 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev); 919 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev); 920 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id); 921 922 void (*dev_config)(struct ata_device *dev); 923 924 void (*freeze)(struct ata_port *ap); 925 void (*thaw)(struct ata_port *ap); 926 ata_prereset_fn_t prereset; 927 ata_reset_fn_t softreset; 928 ata_reset_fn_t hardreset; 929 ata_postreset_fn_t postreset; 930 ata_prereset_fn_t pmp_prereset; 931 ata_reset_fn_t pmp_softreset; 932 ata_reset_fn_t pmp_hardreset; 933 ata_postreset_fn_t pmp_postreset; 934 void (*error_handler)(struct ata_port *ap); 935 void (*lost_interrupt)(struct ata_port *ap); 936 void (*post_internal_cmd)(struct ata_queued_cmd *qc); 937 void (*sched_eh)(struct ata_port *ap); 938 void (*end_eh)(struct ata_port *ap); 939 940 /* 941 * Optional features 942 */ 943 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val); 944 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val); 945 void (*pmp_attach)(struct ata_port *ap); 946 void (*pmp_detach)(struct ata_port *ap); 947 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy, 948 unsigned hints); 949 950 /* 951 * Start, stop, suspend and resume 952 */ 953 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg); 954 int (*port_resume)(struct ata_port *ap); 955 int (*port_start)(struct ata_port *ap); 956 void (*port_stop)(struct ata_port *ap); 957 void (*host_stop)(struct ata_host *host); 958 959 #ifdef CONFIG_ATA_SFF 960 /* 961 * SFF / taskfile oriented ops 962 */ 963 void (*sff_dev_select)(struct ata_port *ap, unsigned int device); 964 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl); 965 u8 (*sff_check_status)(struct ata_port *ap); 966 u8 (*sff_check_altstatus)(struct ata_port *ap); 967 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf); 968 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf); 969 void (*sff_exec_command)(struct ata_port *ap, 970 const struct ata_taskfile *tf); 971 unsigned int (*sff_data_xfer)(struct ata_queued_cmd *qc, 972 unsigned char *buf, unsigned int buflen, int rw); 973 void (*sff_irq_on)(struct ata_port *); 974 bool (*sff_irq_check)(struct ata_port *); 975 void (*sff_irq_clear)(struct ata_port *); 976 void (*sff_drain_fifo)(struct ata_queued_cmd *qc); 977 978 #ifdef CONFIG_ATA_BMDMA 979 void (*bmdma_setup)(struct ata_queued_cmd *qc); 980 void (*bmdma_start)(struct ata_queued_cmd *qc); 981 void (*bmdma_stop)(struct ata_queued_cmd *qc); 982 u8 (*bmdma_status)(struct ata_port *ap); 983 #endif /* CONFIG_ATA_BMDMA */ 984 #endif /* CONFIG_ATA_SFF */ 985 986 ssize_t (*em_show)(struct ata_port *ap, char *buf); 987 ssize_t (*em_store)(struct ata_port *ap, const char *message, 988 size_t size); 989 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf); 990 ssize_t (*sw_activity_store)(struct ata_device *dev, 991 enum sw_activity val); 992 ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state, 993 ssize_t size); 994 995 /* 996 * Obsolete 997 */ 998 void (*phy_reset)(struct ata_port *ap); 999 void (*eng_timeout)(struct ata_port *ap); 1000 1001 /* 1002 * ->inherits must be the last field and all the preceding 1003 * fields must be pointers. 1004 */ 1005 const struct ata_port_operations *inherits; 1006 }; 1007 1008 struct ata_port_info { 1009 unsigned long flags; 1010 unsigned long link_flags; 1011 unsigned long pio_mask; 1012 unsigned long mwdma_mask; 1013 unsigned long udma_mask; 1014 struct ata_port_operations *port_ops; 1015 void *private_data; 1016 }; 1017 1018 struct ata_timing { 1019 unsigned short mode; /* ATA mode */ 1020 unsigned short setup; /* t1 */ 1021 unsigned short act8b; /* t2 for 8-bit I/O */ 1022 unsigned short rec8b; /* t2i for 8-bit I/O */ 1023 unsigned short cyc8b; /* t0 for 8-bit I/O */ 1024 unsigned short active; /* t2 or tD */ 1025 unsigned short recover; /* t2i or tK */ 1026 unsigned short dmack_hold; /* tj */ 1027 unsigned short cycle; /* t0 */ 1028 unsigned short udma; /* t2CYCTYP/2 */ 1029 }; 1030 1031 /* 1032 * Core layer - drivers/ata/libata-core.c 1033 */ 1034 extern const unsigned long sata_deb_timing_normal[]; 1035 extern const unsigned long sata_deb_timing_hotplug[]; 1036 extern const unsigned long sata_deb_timing_long[]; 1037 1038 extern struct ata_port_operations ata_dummy_port_ops; 1039 extern const struct ata_port_info ata_dummy_port_info; 1040 1041 static inline bool ata_is_atapi(u8 prot) 1042 { 1043 return prot & ATA_PROT_FLAG_ATAPI; 1044 } 1045 1046 static inline bool ata_is_pio(u8 prot) 1047 { 1048 return prot & ATA_PROT_FLAG_PIO; 1049 } 1050 1051 static inline bool ata_is_dma(u8 prot) 1052 { 1053 return prot & ATA_PROT_FLAG_DMA; 1054 } 1055 1056 static inline bool ata_is_ncq(u8 prot) 1057 { 1058 return prot & ATA_PROT_FLAG_NCQ; 1059 } 1060 1061 static inline bool ata_is_data(u8 prot) 1062 { 1063 return prot & (ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA); 1064 } 1065 1066 static inline int is_multi_taskfile(struct ata_taskfile *tf) 1067 { 1068 return (tf->command == ATA_CMD_READ_MULTI) || 1069 (tf->command == ATA_CMD_WRITE_MULTI) || 1070 (tf->command == ATA_CMD_READ_MULTI_EXT) || 1071 (tf->command == ATA_CMD_WRITE_MULTI_EXT) || 1072 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); 1073 } 1074 1075 static inline const unsigned long * 1076 sata_ehc_deb_timing(struct ata_eh_context *ehc) 1077 { 1078 if (ehc->i.flags & ATA_EHI_HOTPLUGGED) 1079 return sata_deb_timing_hotplug; 1080 else 1081 return sata_deb_timing_normal; 1082 } 1083 1084 static inline int ata_port_is_dummy(struct ata_port *ap) 1085 { 1086 return ap->ops == &ata_dummy_port_ops; 1087 } 1088 1089 extern int sata_set_spd(struct ata_link *link); 1090 extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); 1091 extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, 1092 int (*check_ready)(struct ata_link *link)); 1093 extern int sata_link_debounce(struct ata_link *link, 1094 const unsigned long *params, unsigned long deadline); 1095 extern int sata_link_resume(struct ata_link *link, const unsigned long *params, 1096 unsigned long deadline); 1097 extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy, 1098 bool spm_wakeup); 1099 extern int sata_link_hardreset(struct ata_link *link, 1100 const unsigned long *timing, unsigned long deadline, 1101 bool *online, int (*check_ready)(struct ata_link *)); 1102 extern int sata_std_hardreset(struct ata_link *link, unsigned int *class, 1103 unsigned long deadline); 1104 extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); 1105 1106 extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports); 1107 extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, 1108 const struct ata_port_info * const * ppi, int n_ports); 1109 extern int ata_slave_link_init(struct ata_port *ap); 1110 extern int ata_host_start(struct ata_host *host); 1111 extern int ata_host_register(struct ata_host *host, 1112 struct scsi_host_template *sht); 1113 extern int ata_host_activate(struct ata_host *host, int irq, 1114 irq_handler_t irq_handler, unsigned long irq_flags, 1115 struct scsi_host_template *sht); 1116 extern void ata_host_detach(struct ata_host *host); 1117 extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *); 1118 extern int ata_scsi_detect(struct scsi_host_template *sht); 1119 extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); 1120 extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd); 1121 extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev, 1122 int cmd, void __user *arg); 1123 extern void ata_sas_port_destroy(struct ata_port *); 1124 extern struct ata_port *ata_sas_port_alloc(struct ata_host *, 1125 struct ata_port_info *, struct Scsi_Host *); 1126 extern void ata_sas_async_probe(struct ata_port *ap); 1127 extern int ata_sas_sync_probe(struct ata_port *ap); 1128 extern int ata_sas_port_init(struct ata_port *); 1129 extern int ata_sas_port_start(struct ata_port *ap); 1130 extern void ata_sas_port_stop(struct ata_port *ap); 1131 extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); 1132 extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap); 1133 extern enum blk_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd); 1134 extern int sata_scr_valid(struct ata_link *link); 1135 extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); 1136 extern int sata_scr_write(struct ata_link *link, int reg, u32 val); 1137 extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); 1138 extern bool ata_link_online(struct ata_link *link); 1139 extern bool ata_link_offline(struct ata_link *link); 1140 #ifdef CONFIG_PM 1141 extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg); 1142 extern void ata_host_resume(struct ata_host *host); 1143 extern void ata_sas_port_suspend(struct ata_port *ap); 1144 extern void ata_sas_port_resume(struct ata_port *ap); 1145 #else 1146 static inline void ata_sas_port_suspend(struct ata_port *ap) 1147 { 1148 } 1149 static inline void ata_sas_port_resume(struct ata_port *ap) 1150 { 1151 } 1152 #endif 1153 extern int ata_ratelimit(void); 1154 extern void ata_msleep(struct ata_port *ap, unsigned int msecs); 1155 extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask, 1156 u32 val, unsigned long interval, unsigned long timeout); 1157 extern int atapi_cmd_type(u8 opcode); 1158 extern void ata_tf_to_fis(const struct ata_taskfile *tf, 1159 u8 pmp, int is_cmd, u8 *fis); 1160 extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); 1161 extern unsigned long ata_pack_xfermask(unsigned long pio_mask, 1162 unsigned long mwdma_mask, unsigned long udma_mask); 1163 extern void ata_unpack_xfermask(unsigned long xfer_mask, 1164 unsigned long *pio_mask, unsigned long *mwdma_mask, 1165 unsigned long *udma_mask); 1166 extern u8 ata_xfer_mask2mode(unsigned long xfer_mask); 1167 extern unsigned long ata_xfer_mode2mask(u8 xfer_mode); 1168 extern int ata_xfer_mode2shift(unsigned long xfer_mode); 1169 extern const char *ata_mode_string(unsigned long xfer_mask); 1170 extern unsigned long ata_id_xfermask(const u16 *id); 1171 extern int ata_std_qc_defer(struct ata_queued_cmd *qc); 1172 extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); 1173 extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, 1174 unsigned int n_elem); 1175 extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); 1176 extern void ata_dev_disable(struct ata_device *adev); 1177 extern void ata_id_string(const u16 *id, unsigned char *s, 1178 unsigned int ofs, unsigned int len); 1179 extern void ata_id_c_string(const u16 *id, unsigned char *s, 1180 unsigned int ofs, unsigned int len); 1181 extern unsigned int ata_do_dev_read_id(struct ata_device *dev, 1182 struct ata_taskfile *tf, u16 *id); 1183 extern void ata_qc_complete(struct ata_queued_cmd *qc); 1184 extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active); 1185 extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd); 1186 extern int ata_std_bios_param(struct scsi_device *sdev, 1187 struct block_device *bdev, 1188 sector_t capacity, int geom[]); 1189 extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev); 1190 extern int ata_scsi_slave_config(struct scsi_device *sdev); 1191 extern void ata_scsi_slave_destroy(struct scsi_device *sdev); 1192 extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, 1193 int queue_depth); 1194 extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, 1195 int queue_depth); 1196 extern struct ata_device *ata_dev_pair(struct ata_device *adev); 1197 extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); 1198 extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap); 1199 extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q); 1200 extern bool sata_lpm_ignore_phy_events(struct ata_link *link); 1201 1202 extern int ata_cable_40wire(struct ata_port *ap); 1203 extern int ata_cable_80wire(struct ata_port *ap); 1204 extern int ata_cable_sata(struct ata_port *ap); 1205 extern int ata_cable_ignore(struct ata_port *ap); 1206 extern int ata_cable_unknown(struct ata_port *ap); 1207 1208 /* Timing helpers */ 1209 extern unsigned int ata_pio_need_iordy(const struct ata_device *); 1210 extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); 1211 extern int ata_timing_compute(struct ata_device *, unsigned short, 1212 struct ata_timing *, int, int); 1213 extern void ata_timing_merge(const struct ata_timing *, 1214 const struct ata_timing *, struct ata_timing *, 1215 unsigned int); 1216 extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); 1217 1218 /* PCI */ 1219 #ifdef CONFIG_PCI 1220 struct pci_dev; 1221 1222 struct pci_bits { 1223 unsigned int reg; /* PCI config register to read */ 1224 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ 1225 unsigned long mask; 1226 unsigned long val; 1227 }; 1228 1229 extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); 1230 extern void ata_pci_remove_one(struct pci_dev *pdev); 1231 1232 #ifdef CONFIG_PM 1233 extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); 1234 extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); 1235 extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); 1236 extern int ata_pci_device_resume(struct pci_dev *pdev); 1237 #endif /* CONFIG_PM */ 1238 #endif /* CONFIG_PCI */ 1239 1240 struct platform_device; 1241 1242 extern int ata_platform_remove_one(struct platform_device *pdev); 1243 1244 /* 1245 * ACPI - drivers/ata/libata-acpi.c 1246 */ 1247 #ifdef CONFIG_ATA_ACPI 1248 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1249 { 1250 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) 1251 return &ap->__acpi_init_gtm; 1252 return NULL; 1253 } 1254 int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); 1255 int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); 1256 unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, 1257 const struct ata_acpi_gtm *gtm); 1258 int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm); 1259 #else 1260 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1261 { 1262 return NULL; 1263 } 1264 1265 static inline int ata_acpi_stm(const struct ata_port *ap, 1266 struct ata_acpi_gtm *stm) 1267 { 1268 return -ENOSYS; 1269 } 1270 1271 static inline int ata_acpi_gtm(const struct ata_port *ap, 1272 struct ata_acpi_gtm *stm) 1273 { 1274 return -ENOSYS; 1275 } 1276 1277 static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, 1278 const struct ata_acpi_gtm *gtm) 1279 { 1280 return 0; 1281 } 1282 1283 static inline int ata_acpi_cbl_80wire(struct ata_port *ap, 1284 const struct ata_acpi_gtm *gtm) 1285 { 1286 return 0; 1287 } 1288 #endif 1289 1290 /* 1291 * EH - drivers/ata/libata-eh.c 1292 */ 1293 extern void ata_port_schedule_eh(struct ata_port *ap); 1294 extern void ata_port_wait_eh(struct ata_port *ap); 1295 extern int ata_link_abort(struct ata_link *link); 1296 extern int ata_port_abort(struct ata_port *ap); 1297 extern int ata_port_freeze(struct ata_port *ap); 1298 extern int sata_async_notification(struct ata_port *ap); 1299 1300 extern void ata_eh_freeze_port(struct ata_port *ap); 1301 extern void ata_eh_thaw_port(struct ata_port *ap); 1302 1303 extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); 1304 extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); 1305 extern void ata_eh_analyze_ncq_error(struct ata_link *link); 1306 1307 extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, 1308 ata_reset_fn_t softreset, ata_reset_fn_t hardreset, 1309 ata_postreset_fn_t postreset); 1310 extern void ata_std_error_handler(struct ata_port *ap); 1311 extern void ata_std_sched_eh(struct ata_port *ap); 1312 extern void ata_std_end_eh(struct ata_port *ap); 1313 extern int ata_link_nr_enabled(struct ata_link *link); 1314 1315 /* 1316 * Base operations to inherit from and initializers for sht 1317 * 1318 * Operations 1319 * 1320 * base : Common to all libata drivers. 1321 * sata : SATA controllers w/ native interface. 1322 * pmp : SATA controllers w/ PMP support. 1323 * sff : SFF ATA controllers w/o BMDMA support. 1324 * bmdma : SFF ATA controllers w/ BMDMA support. 1325 * 1326 * sht initializers 1327 * 1328 * BASE : Common to all libata drivers. The user must set 1329 * sg_tablesize and dma_boundary. 1330 * PIO : SFF ATA controllers w/ only PIO support. 1331 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and 1332 * dma_boundary are set to BMDMA limits. 1333 * NCQ : SATA controllers supporting NCQ. The user must set 1334 * sg_tablesize, dma_boundary and can_queue. 1335 */ 1336 extern const struct ata_port_operations ata_base_port_ops; 1337 extern const struct ata_port_operations sata_port_ops; 1338 extern struct device_attribute *ata_common_sdev_attrs[]; 1339 1340 /* 1341 * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated 1342 * by the edge drivers. Because the 'module' field of sht must be the 1343 * edge driver's module reference, otherwise the driver can be unloaded 1344 * even if the scsi_device is being accessed. 1345 */ 1346 #define ATA_BASE_SHT(drv_name) \ 1347 .module = THIS_MODULE, \ 1348 .name = drv_name, \ 1349 .ioctl = ata_scsi_ioctl, \ 1350 .queuecommand = ata_scsi_queuecmd, \ 1351 .can_queue = ATA_DEF_QUEUE, \ 1352 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \ 1353 .this_id = ATA_SHT_THIS_ID, \ 1354 .emulated = ATA_SHT_EMULATED, \ 1355 .use_clustering = ATA_SHT_USE_CLUSTERING, \ 1356 .proc_name = drv_name, \ 1357 .slave_configure = ata_scsi_slave_config, \ 1358 .slave_destroy = ata_scsi_slave_destroy, \ 1359 .eh_timed_out = ata_scsi_timed_out, \ 1360 .bios_param = ata_std_bios_param, \ 1361 .unlock_native_capacity = ata_scsi_unlock_native_capacity, \ 1362 .sdev_attrs = ata_common_sdev_attrs 1363 1364 #define ATA_NCQ_SHT(drv_name) \ 1365 ATA_BASE_SHT(drv_name), \ 1366 .change_queue_depth = ata_scsi_change_queue_depth 1367 1368 /* 1369 * PMP helpers 1370 */ 1371 #ifdef CONFIG_SATA_PMP 1372 static inline bool sata_pmp_supported(struct ata_port *ap) 1373 { 1374 return ap->flags & ATA_FLAG_PMP; 1375 } 1376 1377 static inline bool sata_pmp_attached(struct ata_port *ap) 1378 { 1379 return ap->nr_pmp_links != 0; 1380 } 1381 1382 static inline bool ata_is_host_link(const struct ata_link *link) 1383 { 1384 return link == &link->ap->link || link == link->ap->slave_link; 1385 } 1386 #else /* CONFIG_SATA_PMP */ 1387 static inline bool sata_pmp_supported(struct ata_port *ap) 1388 { 1389 return false; 1390 } 1391 1392 static inline bool sata_pmp_attached(struct ata_port *ap) 1393 { 1394 return false; 1395 } 1396 1397 static inline bool ata_is_host_link(const struct ata_link *link) 1398 { 1399 return 1; 1400 } 1401 #endif /* CONFIG_SATA_PMP */ 1402 1403 static inline int sata_srst_pmp(struct ata_link *link) 1404 { 1405 if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) 1406 return SATA_PMP_CTRL_PORT; 1407 return link->pmp; 1408 } 1409 1410 /* 1411 * printk helpers 1412 */ 1413 __printf(3, 4) 1414 void ata_port_printk(const struct ata_port *ap, const char *level, 1415 const char *fmt, ...); 1416 __printf(3, 4) 1417 void ata_link_printk(const struct ata_link *link, const char *level, 1418 const char *fmt, ...); 1419 __printf(3, 4) 1420 void ata_dev_printk(const struct ata_device *dev, const char *level, 1421 const char *fmt, ...); 1422 1423 #define ata_port_err(ap, fmt, ...) \ 1424 ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__) 1425 #define ata_port_warn(ap, fmt, ...) \ 1426 ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__) 1427 #define ata_port_notice(ap, fmt, ...) \ 1428 ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__) 1429 #define ata_port_info(ap, fmt, ...) \ 1430 ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__) 1431 #define ata_port_dbg(ap, fmt, ...) \ 1432 ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__) 1433 1434 #define ata_link_err(link, fmt, ...) \ 1435 ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__) 1436 #define ata_link_warn(link, fmt, ...) \ 1437 ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__) 1438 #define ata_link_notice(link, fmt, ...) \ 1439 ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__) 1440 #define ata_link_info(link, fmt, ...) \ 1441 ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__) 1442 #define ata_link_dbg(link, fmt, ...) \ 1443 ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__) 1444 1445 #define ata_dev_err(dev, fmt, ...) \ 1446 ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__) 1447 #define ata_dev_warn(dev, fmt, ...) \ 1448 ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__) 1449 #define ata_dev_notice(dev, fmt, ...) \ 1450 ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__) 1451 #define ata_dev_info(dev, fmt, ...) \ 1452 ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__) 1453 #define ata_dev_dbg(dev, fmt, ...) \ 1454 ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__) 1455 1456 void ata_print_version(const struct device *dev, const char *version); 1457 1458 /* 1459 * ata_eh_info helpers 1460 */ 1461 extern __printf(2, 3) 1462 void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); 1463 extern __printf(2, 3) 1464 void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); 1465 extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); 1466 1467 static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) 1468 { 1469 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; 1470 ehi->flags |= ATA_EHI_HOTPLUGGED; 1471 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK; 1472 ehi->err_mask |= AC_ERR_ATA_BUS; 1473 } 1474 1475 /* 1476 * port description helpers 1477 */ 1478 extern __printf(2, 3) 1479 void ata_port_desc(struct ata_port *ap, const char *fmt, ...); 1480 #ifdef CONFIG_PCI 1481 extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, 1482 const char *name); 1483 #endif 1484 1485 static inline unsigned int ata_tag_valid(unsigned int tag) 1486 { 1487 return (tag < ATA_MAX_QUEUE) ? 1 : 0; 1488 } 1489 1490 static inline unsigned int ata_tag_internal(unsigned int tag) 1491 { 1492 return tag == ATA_TAG_INTERNAL; 1493 } 1494 1495 /* 1496 * device helpers 1497 */ 1498 static inline unsigned int ata_class_enabled(unsigned int class) 1499 { 1500 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || 1501 class == ATA_DEV_PMP || class == ATA_DEV_SEMB || 1502 class == ATA_DEV_ZAC; 1503 } 1504 1505 static inline unsigned int ata_class_disabled(unsigned int class) 1506 { 1507 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || 1508 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP || 1509 class == ATA_DEV_ZAC_UNSUP; 1510 } 1511 1512 static inline unsigned int ata_class_absent(unsigned int class) 1513 { 1514 return !ata_class_enabled(class) && !ata_class_disabled(class); 1515 } 1516 1517 static inline unsigned int ata_dev_enabled(const struct ata_device *dev) 1518 { 1519 return ata_class_enabled(dev->class); 1520 } 1521 1522 static inline unsigned int ata_dev_disabled(const struct ata_device *dev) 1523 { 1524 return ata_class_disabled(dev->class); 1525 } 1526 1527 static inline unsigned int ata_dev_absent(const struct ata_device *dev) 1528 { 1529 return ata_class_absent(dev->class); 1530 } 1531 1532 /* 1533 * link helpers 1534 */ 1535 static inline int ata_link_max_devices(const struct ata_link *link) 1536 { 1537 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) 1538 return 2; 1539 return 1; 1540 } 1541 1542 static inline int ata_link_active(struct ata_link *link) 1543 { 1544 return ata_tag_valid(link->active_tag) || link->sactive; 1545 } 1546 1547 /* 1548 * Iterators 1549 * 1550 * ATA_LITER_* constants are used to select link iteration mode and 1551 * ATA_DITER_* device iteration mode. 1552 * 1553 * For a custom iteration directly using ata_{link|dev}_next(), if 1554 * @link or @dev, respectively, is NULL, the first element is 1555 * returned. @dev and @link can be any valid device or link and the 1556 * next element according to the iteration mode will be returned. 1557 * After the last element, NULL is returned. 1558 */ 1559 enum ata_link_iter_mode { 1560 ATA_LITER_EDGE, /* if present, PMP links only; otherwise, 1561 * host link. no slave link */ 1562 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */ 1563 ATA_LITER_PMP_FIRST, /* PMP links followed by host link, 1564 * slave link still comes after host link */ 1565 }; 1566 1567 enum ata_dev_iter_mode { 1568 ATA_DITER_ENABLED, 1569 ATA_DITER_ENABLED_REVERSE, 1570 ATA_DITER_ALL, 1571 ATA_DITER_ALL_REVERSE, 1572 }; 1573 1574 extern struct ata_link *ata_link_next(struct ata_link *link, 1575 struct ata_port *ap, 1576 enum ata_link_iter_mode mode); 1577 1578 extern struct ata_device *ata_dev_next(struct ata_device *dev, 1579 struct ata_link *link, 1580 enum ata_dev_iter_mode mode); 1581 1582 /* 1583 * Shortcut notation for iterations 1584 * 1585 * ata_for_each_link() iterates over each link of @ap according to 1586 * @mode. @link points to the current link in the loop. @link is 1587 * NULL after loop termination. ata_for_each_dev() works the same way 1588 * except that it iterates over each device of @link. 1589 * 1590 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be 1591 * specified when using the following shorthand notations. Only the 1592 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be 1593 * specified. This not only increases brevity but also makes it 1594 * impossible to use ATA_LITER_* for device iteration or vice-versa. 1595 */ 1596 #define ata_for_each_link(link, ap, mode) \ 1597 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \ 1598 (link) = ata_link_next((link), (ap), ATA_LITER_##mode)) 1599 1600 #define ata_for_each_dev(dev, link, mode) \ 1601 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \ 1602 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode)) 1603 1604 /** 1605 * ata_ncq_enabled - Test whether NCQ is enabled 1606 * @dev: ATA device to test for 1607 * 1608 * LOCKING: 1609 * spin_lock_irqsave(host lock) 1610 * 1611 * RETURNS: 1612 * 1 if NCQ is enabled for @dev, 0 otherwise. 1613 */ 1614 static inline int ata_ncq_enabled(struct ata_device *dev) 1615 { 1616 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | 1617 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; 1618 } 1619 1620 static inline bool ata_fpdma_dsm_supported(struct ata_device *dev) 1621 { 1622 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1623 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] & 1624 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM); 1625 } 1626 1627 static inline bool ata_fpdma_read_log_supported(struct ata_device *dev) 1628 { 1629 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1630 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET] & 1631 ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED); 1632 } 1633 1634 static inline bool ata_fpdma_zac_mgmt_in_supported(struct ata_device *dev) 1635 { 1636 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1637 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET] & 1638 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED); 1639 } 1640 1641 static inline bool ata_fpdma_zac_mgmt_out_supported(struct ata_device *dev) 1642 { 1643 return (dev->ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET] & 1644 ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT); 1645 } 1646 1647 static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) 1648 { 1649 qc->tf.ctl |= ATA_NIEN; 1650 } 1651 1652 static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, 1653 unsigned int tag) 1654 { 1655 if (likely(ata_tag_valid(tag))) 1656 return &ap->qcmd[tag]; 1657 return NULL; 1658 } 1659 1660 static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, 1661 unsigned int tag) 1662 { 1663 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); 1664 1665 if (unlikely(!qc) || !ap->ops->error_handler) 1666 return qc; 1667 1668 if ((qc->flags & (ATA_QCFLAG_ACTIVE | 1669 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) 1670 return qc; 1671 1672 return NULL; 1673 } 1674 1675 static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc) 1676 { 1677 return qc->nbytes - min(qc->extrabytes, qc->nbytes); 1678 } 1679 1680 static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) 1681 { 1682 memset(tf, 0, sizeof(*tf)); 1683 1684 #ifdef CONFIG_ATA_SFF 1685 tf->ctl = dev->link->ap->ctl; 1686 #else 1687 tf->ctl = ATA_DEVCTL_OBS; 1688 #endif 1689 if (dev->devno == 0) 1690 tf->device = ATA_DEVICE_OBS; 1691 else 1692 tf->device = ATA_DEVICE_OBS | ATA_DEV1; 1693 } 1694 1695 static inline void ata_qc_reinit(struct ata_queued_cmd *qc) 1696 { 1697 qc->dma_dir = DMA_NONE; 1698 qc->sg = NULL; 1699 qc->flags = 0; 1700 qc->cursg = NULL; 1701 qc->cursg_ofs = 0; 1702 qc->nbytes = qc->extrabytes = qc->curbytes = 0; 1703 qc->n_elem = 0; 1704 qc->err_mask = 0; 1705 qc->sect_size = ATA_SECT_SIZE; 1706 1707 ata_tf_init(qc->dev, &qc->tf); 1708 1709 /* init result_tf such that it indicates normal completion */ 1710 qc->result_tf.command = ATA_DRDY; 1711 qc->result_tf.feature = 0; 1712 } 1713 1714 static inline int ata_try_flush_cache(const struct ata_device *dev) 1715 { 1716 return ata_id_wcache_enabled(dev->id) || 1717 ata_id_has_flush(dev->id) || 1718 ata_id_has_flush_ext(dev->id); 1719 } 1720 1721 static inline unsigned int ac_err_mask(u8 status) 1722 { 1723 if (status & (ATA_BUSY | ATA_DRQ)) 1724 return AC_ERR_HSM; 1725 if (status & (ATA_ERR | ATA_DF)) 1726 return AC_ERR_DEV; 1727 return 0; 1728 } 1729 1730 static inline unsigned int __ac_err_mask(u8 status) 1731 { 1732 unsigned int mask = ac_err_mask(status); 1733 if (mask == 0) 1734 return AC_ERR_OTHER; 1735 return mask; 1736 } 1737 1738 static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) 1739 { 1740 return *(struct ata_port **)&host->hostdata[0]; 1741 } 1742 1743 static inline int ata_check_ready(u8 status) 1744 { 1745 if (!(status & ATA_BUSY)) 1746 return 1; 1747 1748 /* 0xff indicates either no device or device not ready */ 1749 if (status == 0xff) 1750 return -ENODEV; 1751 1752 return 0; 1753 } 1754 1755 static inline unsigned long ata_deadline(unsigned long from_jiffies, 1756 unsigned long timeout_msecs) 1757 { 1758 return from_jiffies + msecs_to_jiffies(timeout_msecs); 1759 } 1760 1761 /* Don't open code these in drivers as there are traps. Firstly the range may 1762 change in future hardware and specs, secondly 0xFF means 'no DMA' but is 1763 > UDMA_0. Dyma ddreigiau */ 1764 1765 static inline int ata_using_mwdma(struct ata_device *adev) 1766 { 1767 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4) 1768 return 1; 1769 return 0; 1770 } 1771 1772 static inline int ata_using_udma(struct ata_device *adev) 1773 { 1774 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7) 1775 return 1; 1776 return 0; 1777 } 1778 1779 static inline int ata_dma_enabled(struct ata_device *adev) 1780 { 1781 return (adev->dma_mode == 0xFF ? 0 : 1); 1782 } 1783 1784 /************************************************************************** 1785 * PMP - drivers/ata/libata-pmp.c 1786 */ 1787 #ifdef CONFIG_SATA_PMP 1788 1789 extern const struct ata_port_operations sata_pmp_port_ops; 1790 1791 extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); 1792 extern void sata_pmp_error_handler(struct ata_port *ap); 1793 1794 #else /* CONFIG_SATA_PMP */ 1795 1796 #define sata_pmp_port_ops sata_port_ops 1797 #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer 1798 #define sata_pmp_error_handler ata_std_error_handler 1799 1800 #endif /* CONFIG_SATA_PMP */ 1801 1802 1803 /************************************************************************** 1804 * SFF - drivers/ata/libata-sff.c 1805 */ 1806 #ifdef CONFIG_ATA_SFF 1807 1808 extern const struct ata_port_operations ata_sff_port_ops; 1809 extern const struct ata_port_operations ata_bmdma32_port_ops; 1810 1811 /* PIO only, sg_tablesize and dma_boundary limits can be removed */ 1812 #define ATA_PIO_SHT(drv_name) \ 1813 ATA_BASE_SHT(drv_name), \ 1814 .sg_tablesize = LIBATA_MAX_PRD, \ 1815 .dma_boundary = ATA_DMA_BOUNDARY 1816 1817 extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); 1818 extern u8 ata_sff_check_status(struct ata_port *ap); 1819 extern void ata_sff_pause(struct ata_port *ap); 1820 extern void ata_sff_dma_pause(struct ata_port *ap); 1821 extern int ata_sff_busy_sleep(struct ata_port *ap, 1822 unsigned long timeout_pat, unsigned long timeout); 1823 extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline); 1824 extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); 1825 extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf); 1826 extern void ata_sff_exec_command(struct ata_port *ap, 1827 const struct ata_taskfile *tf); 1828 extern unsigned int ata_sff_data_xfer(struct ata_queued_cmd *qc, 1829 unsigned char *buf, unsigned int buflen, int rw); 1830 extern unsigned int ata_sff_data_xfer32(struct ata_queued_cmd *qc, 1831 unsigned char *buf, unsigned int buflen, int rw); 1832 extern unsigned int ata_sff_data_xfer_noirq(struct ata_queued_cmd *qc, 1833 unsigned char *buf, unsigned int buflen, int rw); 1834 extern void ata_sff_irq_on(struct ata_port *ap); 1835 extern void ata_sff_irq_clear(struct ata_port *ap); 1836 extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, 1837 u8 status, int in_wq); 1838 extern void ata_sff_queue_work(struct work_struct *work); 1839 extern void ata_sff_queue_delayed_work(struct delayed_work *dwork, 1840 unsigned long delay); 1841 extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay); 1842 extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); 1843 extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); 1844 extern unsigned int ata_sff_port_intr(struct ata_port *ap, 1845 struct ata_queued_cmd *qc); 1846 extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); 1847 extern void ata_sff_lost_interrupt(struct ata_port *ap); 1848 extern void ata_sff_freeze(struct ata_port *ap); 1849 extern void ata_sff_thaw(struct ata_port *ap); 1850 extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline); 1851 extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, 1852 u8 *r_err); 1853 extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask, 1854 unsigned long deadline); 1855 extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes, 1856 unsigned long deadline); 1857 extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class, 1858 unsigned long deadline); 1859 extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes); 1860 extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc); 1861 extern void ata_sff_error_handler(struct ata_port *ap); 1862 extern void ata_sff_std_ports(struct ata_ioports *ioaddr); 1863 #ifdef CONFIG_PCI 1864 extern int ata_pci_sff_init_host(struct ata_host *host); 1865 extern int ata_pci_sff_prepare_host(struct pci_dev *pdev, 1866 const struct ata_port_info * const * ppi, 1867 struct ata_host **r_host); 1868 extern int ata_pci_sff_activate_host(struct ata_host *host, 1869 irq_handler_t irq_handler, 1870 struct scsi_host_template *sht); 1871 extern int ata_pci_sff_init_one(struct pci_dev *pdev, 1872 const struct ata_port_info * const * ppi, 1873 struct scsi_host_template *sht, void *host_priv, int hflags); 1874 #endif /* CONFIG_PCI */ 1875 1876 #ifdef CONFIG_ATA_BMDMA 1877 1878 extern const struct ata_port_operations ata_bmdma_port_ops; 1879 1880 #define ATA_BMDMA_SHT(drv_name) \ 1881 ATA_BASE_SHT(drv_name), \ 1882 .sg_tablesize = LIBATA_MAX_PRD, \ 1883 .dma_boundary = ATA_DMA_BOUNDARY 1884 1885 extern void ata_bmdma_qc_prep(struct ata_queued_cmd *qc); 1886 extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc); 1887 extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc); 1888 extern unsigned int ata_bmdma_port_intr(struct ata_port *ap, 1889 struct ata_queued_cmd *qc); 1890 extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance); 1891 extern void ata_bmdma_error_handler(struct ata_port *ap); 1892 extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc); 1893 extern void ata_bmdma_irq_clear(struct ata_port *ap); 1894 extern void ata_bmdma_setup(struct ata_queued_cmd *qc); 1895 extern void ata_bmdma_start(struct ata_queued_cmd *qc); 1896 extern void ata_bmdma_stop(struct ata_queued_cmd *qc); 1897 extern u8 ata_bmdma_status(struct ata_port *ap); 1898 extern int ata_bmdma_port_start(struct ata_port *ap); 1899 extern int ata_bmdma_port_start32(struct ata_port *ap); 1900 1901 #ifdef CONFIG_PCI 1902 extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); 1903 extern void ata_pci_bmdma_init(struct ata_host *host); 1904 extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev, 1905 const struct ata_port_info * const * ppi, 1906 struct ata_host **r_host); 1907 extern int ata_pci_bmdma_init_one(struct pci_dev *pdev, 1908 const struct ata_port_info * const * ppi, 1909 struct scsi_host_template *sht, 1910 void *host_priv, int hflags); 1911 #endif /* CONFIG_PCI */ 1912 #endif /* CONFIG_ATA_BMDMA */ 1913 1914 /** 1915 * ata_sff_busy_wait - Wait for a port status register 1916 * @ap: Port to wait for. 1917 * @bits: bits that must be clear 1918 * @max: number of 10uS waits to perform 1919 * 1920 * Waits up to max*10 microseconds for the selected bits in the port's 1921 * status register to be cleared. 1922 * Returns final value of status register. 1923 * 1924 * LOCKING: 1925 * Inherited from caller. 1926 */ 1927 static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits, 1928 unsigned int max) 1929 { 1930 u8 status; 1931 1932 do { 1933 udelay(10); 1934 status = ap->ops->sff_check_status(ap); 1935 max--; 1936 } while (status != 0xff && (status & bits) && (max > 0)); 1937 1938 return status; 1939 } 1940 1941 /** 1942 * ata_wait_idle - Wait for a port to be idle. 1943 * @ap: Port to wait for. 1944 * 1945 * Waits up to 10ms for port's BUSY and DRQ signals to clear. 1946 * Returns final value of status register. 1947 * 1948 * LOCKING: 1949 * Inherited from caller. 1950 */ 1951 static inline u8 ata_wait_idle(struct ata_port *ap) 1952 { 1953 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); 1954 1955 #ifdef ATA_DEBUG 1956 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) 1957 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n", 1958 status); 1959 #endif 1960 1961 return status; 1962 } 1963 #endif /* CONFIG_ATA_SFF */ 1964 1965 #endif /* __LINUX_LIBATA_H__ */ 1966