1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Copyright 2003-2005 Red Hat, Inc. All rights reserved. 4 * Copyright 2003-2005 Jeff Garzik 5 * 6 * libata documentation is available via 'make {ps|pdf}docs', 7 * as Documentation/driver-api/libata.rst 8 */ 9 10 #ifndef __LINUX_LIBATA_H__ 11 #define __LINUX_LIBATA_H__ 12 13 #include <linux/delay.h> 14 #include <linux/jiffies.h> 15 #include <linux/interrupt.h> 16 #include <linux/dma-mapping.h> 17 #include <linux/scatterlist.h> 18 #include <linux/io.h> 19 #include <linux/ata.h> 20 #include <linux/workqueue.h> 21 #include <scsi/scsi_host.h> 22 #include <linux/acpi.h> 23 #include <linux/cdrom.h> 24 #include <linux/sched.h> 25 #include <linux/async.h> 26 27 /* 28 * Define if arch has non-standard setup. This is a _PCI_ standard 29 * not a legacy or ISA standard. 30 */ 31 #ifdef CONFIG_ATA_NONSTANDARD 32 #include <asm/libata-portmap.h> 33 #else 34 #define ATA_PRIMARY_IRQ(dev) 14 35 #define ATA_SECONDARY_IRQ(dev) 15 36 #endif 37 38 /* 39 * compile-time options: to be removed as soon as all the drivers are 40 * converted to the new debugging mechanism 41 */ 42 #undef ATA_IRQ_TRAP /* define to ack screaming irqs */ 43 44 /* defines only for the constants which don't work well as enums */ 45 #define ATA_TAG_POISON 0xfafbfcfdU 46 47 /* 48 * Quirk flags bits. 49 * ata_device->quirks is an u64, so __ATA_QUIRK_MAX must not exceed 64. 50 */ 51 enum ata_quirks { 52 __ATA_QUIRK_DIAGNOSTIC, /* Failed boot diag */ 53 __ATA_QUIRK_NODMA, /* DMA problems */ 54 __ATA_QUIRK_NONCQ, /* Don't use NCQ */ 55 __ATA_QUIRK_BROKEN_HPA, /* Broken HPA */ 56 __ATA_QUIRK_DISABLE, /* Disable it */ 57 __ATA_QUIRK_HPA_SIZE, /* Native size off by one */ 58 __ATA_QUIRK_IVB, /* cbl det validity bit bugs */ 59 __ATA_QUIRK_STUCK_ERR, /* Stuck ERR on next PACKET */ 60 __ATA_QUIRK_BRIDGE_OK, /* No bridge limits */ 61 __ATA_QUIRK_ATAPI_MOD16_DMA, /* Use ATAPI DMA for commands that */ 62 /* are not a multiple of 16 bytes */ 63 __ATA_QUIRK_FIRMWARE_WARN, /* Firmware update warning */ 64 __ATA_QUIRK_1_5_GBPS, /* Force 1.5 Gbps */ 65 __ATA_QUIRK_NOSETXFER, /* Skip SETXFER, SATA only */ 66 __ATA_QUIRK_BROKEN_FPDMA_AA, /* Skip AA */ 67 __ATA_QUIRK_DUMP_ID, /* Dump IDENTIFY data */ 68 __ATA_QUIRK_MAX_SEC_LBA48, /* Set max sects to 65535 */ 69 __ATA_QUIRK_ATAPI_DMADIR, /* Device requires dmadir */ 70 __ATA_QUIRK_NO_NCQ_TRIM, /* Do not use queued TRIM */ 71 __ATA_QUIRK_NOLPM, /* Do not use LPM */ 72 __ATA_QUIRK_WD_BROKEN_LPM, /* Some WDs have broken LPM */ 73 __ATA_QUIRK_ZERO_AFTER_TRIM, /* Guarantees zero after trim */ 74 __ATA_QUIRK_NO_DMA_LOG, /* Do not use DMA for log read */ 75 __ATA_QUIRK_NOTRIM, /* Do not use TRIM */ 76 __ATA_QUIRK_MAX_SEC, /* Limit max sectors */ 77 __ATA_QUIRK_MAX_TRIM_128M, /* Limit max trim size to 128M */ 78 __ATA_QUIRK_NO_NCQ_ON_ATI, /* Disable NCQ on ATI chipset */ 79 __ATA_QUIRK_NO_LPM_ON_ATI, /* Disable LPM on ATI chipset */ 80 __ATA_QUIRK_NO_ID_DEV_LOG, /* Identify device log missing */ 81 __ATA_QUIRK_NO_LOG_DIR, /* Do not read log directory */ 82 __ATA_QUIRK_NO_FUA, /* Do not use FUA */ 83 84 __ATA_QUIRK_MAX, 85 }; 86 87 /* 88 * Quirk flags: may be set by libata or controller drivers on drives. 89 * Some quirks may be drive/controller pair dependent. 90 */ 91 enum { 92 ATA_QUIRK_DIAGNOSTIC = BIT_ULL(__ATA_QUIRK_DIAGNOSTIC), 93 ATA_QUIRK_NODMA = BIT_ULL(__ATA_QUIRK_NODMA), 94 ATA_QUIRK_NONCQ = BIT_ULL(__ATA_QUIRK_NONCQ), 95 ATA_QUIRK_BROKEN_HPA = BIT_ULL(__ATA_QUIRK_BROKEN_HPA), 96 ATA_QUIRK_DISABLE = BIT_ULL(__ATA_QUIRK_DISABLE), 97 ATA_QUIRK_HPA_SIZE = BIT_ULL(__ATA_QUIRK_HPA_SIZE), 98 ATA_QUIRK_IVB = BIT_ULL(__ATA_QUIRK_IVB), 99 ATA_QUIRK_STUCK_ERR = BIT_ULL(__ATA_QUIRK_STUCK_ERR), 100 ATA_QUIRK_BRIDGE_OK = BIT_ULL(__ATA_QUIRK_BRIDGE_OK), 101 ATA_QUIRK_ATAPI_MOD16_DMA = BIT_ULL(__ATA_QUIRK_ATAPI_MOD16_DMA), 102 ATA_QUIRK_FIRMWARE_WARN = BIT_ULL(__ATA_QUIRK_FIRMWARE_WARN), 103 ATA_QUIRK_1_5_GBPS = BIT_ULL(__ATA_QUIRK_1_5_GBPS), 104 ATA_QUIRK_NOSETXFER = BIT_ULL(__ATA_QUIRK_NOSETXFER), 105 ATA_QUIRK_BROKEN_FPDMA_AA = BIT_ULL(__ATA_QUIRK_BROKEN_FPDMA_AA), 106 ATA_QUIRK_DUMP_ID = BIT_ULL(__ATA_QUIRK_DUMP_ID), 107 ATA_QUIRK_MAX_SEC_LBA48 = BIT_ULL(__ATA_QUIRK_MAX_SEC_LBA48), 108 ATA_QUIRK_ATAPI_DMADIR = BIT_ULL(__ATA_QUIRK_ATAPI_DMADIR), 109 ATA_QUIRK_NO_NCQ_TRIM = BIT_ULL(__ATA_QUIRK_NO_NCQ_TRIM), 110 ATA_QUIRK_NOLPM = BIT_ULL(__ATA_QUIRK_NOLPM), 111 ATA_QUIRK_WD_BROKEN_LPM = BIT_ULL(__ATA_QUIRK_WD_BROKEN_LPM), 112 ATA_QUIRK_ZERO_AFTER_TRIM = BIT_ULL(__ATA_QUIRK_ZERO_AFTER_TRIM), 113 ATA_QUIRK_NO_DMA_LOG = BIT_ULL(__ATA_QUIRK_NO_DMA_LOG), 114 ATA_QUIRK_NOTRIM = BIT_ULL(__ATA_QUIRK_NOTRIM), 115 ATA_QUIRK_MAX_SEC = BIT_ULL(__ATA_QUIRK_MAX_SEC), 116 ATA_QUIRK_MAX_TRIM_128M = BIT_ULL(__ATA_QUIRK_MAX_TRIM_128M), 117 ATA_QUIRK_NO_NCQ_ON_ATI = BIT_ULL(__ATA_QUIRK_NO_NCQ_ON_ATI), 118 ATA_QUIRK_NO_LPM_ON_ATI = BIT_ULL(__ATA_QUIRK_NO_LPM_ON_ATI), 119 ATA_QUIRK_NO_ID_DEV_LOG = BIT_ULL(__ATA_QUIRK_NO_ID_DEV_LOG), 120 ATA_QUIRK_NO_LOG_DIR = BIT_ULL(__ATA_QUIRK_NO_LOG_DIR), 121 ATA_QUIRK_NO_FUA = BIT_ULL(__ATA_QUIRK_NO_FUA), 122 }; 123 124 enum { 125 /* various global constants */ 126 LIBATA_MAX_PRD = ATA_MAX_PRD / 2, 127 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */ 128 ATA_DEF_QUEUE = 1, 129 ATA_MAX_QUEUE = 32, 130 ATA_TAG_INTERNAL = ATA_MAX_QUEUE, 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, 139 140 /* struct ata_taskfile flags */ 141 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */ 142 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */ 143 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */ 144 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */ 145 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */ 146 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */ 147 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */ 148 149 /* struct ata_device stuff */ 150 ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */ 151 ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */ 152 ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */ 153 ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */ 154 ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */ 155 ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ 156 ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ 157 ATA_DFLAG_AN = (1 << 7), /* AN configured */ 158 ATA_DFLAG_TRUSTED = (1 << 8), /* device supports trusted send/recv */ 159 ATA_DFLAG_FUA = (1 << 9), /* device supports FUA */ 160 ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */ 161 ATA_DFLAG_NCQ_SEND_RECV = (1 << 11), /* device supports NCQ SEND and RECV */ 162 ATA_DFLAG_NCQ_PRIO = (1 << 12), /* device supports NCQ priority */ 163 ATA_DFLAG_CDL = (1 << 13), /* supports cmd duration limits */ 164 ATA_DFLAG_CFG_MASK = (1 << 14) - 1, 165 166 ATA_DFLAG_PIO = (1 << 14), /* device limited to PIO mode */ 167 ATA_DFLAG_NCQ_OFF = (1 << 15), /* device limited to non-NCQ mode */ 168 ATA_DFLAG_SLEEPING = (1 << 16), /* device is sleeping */ 169 ATA_DFLAG_DUBIOUS_XFER = (1 << 17), /* data transfer not verified */ 170 ATA_DFLAG_NO_UNLOAD = (1 << 18), /* device doesn't support unload */ 171 ATA_DFLAG_UNLOCK_HPA = (1 << 19), /* unlock HPA */ 172 ATA_DFLAG_INIT_MASK = (1 << 20) - 1, 173 174 ATA_DFLAG_NCQ_PRIO_ENABLED = (1 << 20), /* Priority cmds sent to dev */ 175 ATA_DFLAG_CDL_ENABLED = (1 << 21), /* cmd duration limits is enabled */ 176 ATA_DFLAG_RESUMING = (1 << 22), /* Device is resuming */ 177 ATA_DFLAG_DETACH = (1 << 24), 178 ATA_DFLAG_DETACHED = (1 << 25), 179 ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */ 180 ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */ 181 ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */ 182 ATA_DFLAG_D_SENSE = (1 << 29), /* Descriptor sense requested */ 183 184 ATA_DFLAG_FEATURES_MASK = (ATA_DFLAG_TRUSTED | ATA_DFLAG_DA | \ 185 ATA_DFLAG_DEVSLP | ATA_DFLAG_NCQ_SEND_RECV | \ 186 ATA_DFLAG_NCQ_PRIO | ATA_DFLAG_FUA | \ 187 ATA_DFLAG_CDL), 188 189 ATA_DEV_UNKNOWN = 0, /* unknown device */ 190 ATA_DEV_ATA = 1, /* ATA device */ 191 ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ 192 ATA_DEV_ATAPI = 3, /* ATAPI device */ 193 ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ 194 ATA_DEV_PMP = 5, /* SATA port multiplier */ 195 ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ 196 ATA_DEV_SEMB = 7, /* SEMB */ 197 ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ 198 ATA_DEV_ZAC = 9, /* ZAC device */ 199 ATA_DEV_ZAC_UNSUP = 10, /* ZAC device (unsupported) */ 200 ATA_DEV_NONE = 11, /* no device */ 201 202 /* struct ata_link flags */ 203 /* NOTE: struct ata_force_param currently stores lflags in u16 */ 204 ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */ 205 ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ 206 ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ 207 ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ 208 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, 209 ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ 210 ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ 211 ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */ 212 ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */ 213 ATA_LFLAG_RST_ONCE = (1 << 9), /* limit recovery to one reset */ 214 ATA_LFLAG_CHANGED = (1 << 10), /* LPM state changed on this link */ 215 ATA_LFLAG_NO_DEBOUNCE_DELAY = (1 << 11), /* no debounce delay on link resume */ 216 217 /* struct ata_port flags */ 218 ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ 219 /* (doesn't imply presence) */ 220 ATA_FLAG_SATA = (1 << 1), 221 ATA_FLAG_NO_LPM = (1 << 2), /* host not happy with LPM */ 222 ATA_FLAG_NO_LOG_PAGE = (1 << 5), /* do not issue log page read */ 223 ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ 224 ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ 225 ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ 226 ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD 227 * doesn't handle PIO interrupts */ 228 ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ 229 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */ 230 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */ 231 ATA_FLAG_DEBUGMSG = (1 << 13), 232 ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */ 233 ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ 234 ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ 235 ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ 236 ATA_FLAG_AN = (1 << 18), /* controller supports AN */ 237 ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ 238 ATA_FLAG_FPDMA_AUX = (1 << 20), /* controller supports H2DFIS aux field */ 239 ATA_FLAG_EM = (1 << 21), /* driver supports enclosure 240 * management */ 241 ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity 242 * led */ 243 ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */ 244 ATA_FLAG_SAS_HOST = (1 << 24), /* SAS host */ 245 246 /* bits 24:31 of ap->flags are reserved for LLD specific flags */ 247 248 249 /* struct ata_port pflags */ 250 ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ 251 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ 252 ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ 253 ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ 254 ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ 255 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ 256 ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ 257 ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ 258 ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */ 259 ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */ 260 261 ATA_PFLAG_RESUMING = (1 << 16), /* port is being resumed */ 262 ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ 263 ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ 264 ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */ 265 266 ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */ 267 ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */ 268 ATA_PFLAG_EXTERNAL = (1 << 22), /* eSATA/external port */ 269 270 /* struct ata_queued_cmd flags */ 271 ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ 272 ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */ 273 ATA_QCFLAG_RTF_FILLED = (1 << 2), /* result TF has been filled */ 274 ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ 275 ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ 276 ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ 277 ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */ 278 ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */ 279 ATA_QCFLAG_HAS_CDL = (1 << 8), /* qc has CDL a descriptor set */ 280 281 ATA_QCFLAG_EH = (1 << 16), /* cmd aborted and owned by EH */ 282 ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ 283 ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ 284 ATA_QCFLAG_EH_SUCCESS_CMD = (1 << 19), /* EH should fetch sense for this successful cmd */ 285 286 /* host set flags */ 287 ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ 288 ATA_HOST_STARTED = (1 << 1), /* Host started */ 289 ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */ 290 ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */ 291 292 ATA_HOST_NO_PART = (1 << 4), /* Host does not support partial */ 293 ATA_HOST_NO_SSC = (1 << 5), /* Host does not support slumber */ 294 ATA_HOST_NO_DEVSLP = (1 << 6), /* Host does not support devslp */ 295 296 /* bits 24:31 of host->flags are reserved for LLD specific flags */ 297 298 /* Various lengths of time */ 299 ATA_TMOUT_INTERNAL_QUICK = 5000, 300 ATA_TMOUT_MAX_PARK = 30000, 301 302 /* 303 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s 304 * is too much without parallel probing. Use 2s if parallel 305 * probing is available, 800ms otherwise. 306 */ 307 ATA_TMOUT_FF_WAIT_LONG = 2000, 308 ATA_TMOUT_FF_WAIT = 800, 309 310 /* Spec mandates to wait for ">= 2ms" before checking status 311 * after reset. We wait 150ms, because that was the magic 312 * delay used for ATAPI devices in Hale Landis's ATADRVR, for 313 * the period of time between when the ATA command register is 314 * written, and then status is checked. Because waiting for 315 * "a while" before checking status is fine, post SRST, we 316 * perform this magic delay here as well. 317 * 318 * Old drivers/ide uses the 2mS rule and then waits for ready. 319 */ 320 ATA_WAIT_AFTER_RESET = 150, 321 322 /* If PMP is supported, we have to do follow-up SRST. As some 323 * PMPs don't send D2H Reg FIS after hardreset, LLDs are 324 * advised to wait only for the following duration before 325 * doing SRST. 326 */ 327 ATA_TMOUT_PMP_SRST_WAIT = 10000, 328 329 /* When the LPM policy is set to ATA_LPM_MAX_POWER, there might 330 * be a spurious PHY event, so ignore the first PHY event that 331 * occurs within 10s after the policy change. 332 */ 333 ATA_TMOUT_SPURIOUS_PHY = 10000, 334 335 /* ATA bus states */ 336 BUS_UNKNOWN = 0, 337 BUS_DMA = 1, 338 BUS_IDLE = 2, 339 BUS_NOINTR = 3, 340 BUS_NODATA = 4, 341 BUS_TIMER = 5, 342 BUS_PIO = 6, 343 BUS_EDD = 7, 344 BUS_IDENTIFY = 8, 345 BUS_PACKET = 9, 346 347 /* SATA port states */ 348 PORT_UNKNOWN = 0, 349 PORT_ENABLED = 1, 350 PORT_DISABLED = 2, 351 352 /* encoding various smaller bitmaps into a single 353 * unsigned int bitmap 354 */ 355 ATA_NR_PIO_MODES = 7, 356 ATA_NR_MWDMA_MODES = 5, 357 ATA_NR_UDMA_MODES = 8, 358 359 ATA_SHIFT_PIO = 0, 360 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES, 361 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES, 362 ATA_SHIFT_PRIO = 6, 363 364 ATA_PRIO_HIGH = 2, 365 /* size of buffer to pad xfers ending on unaligned boundaries */ 366 ATA_DMA_PAD_SZ = 4, 367 368 /* ering size */ 369 ATA_ERING_SIZE = 32, 370 371 /* return values for ->qc_defer */ 372 ATA_DEFER_LINK = 1, 373 ATA_DEFER_PORT = 2, 374 375 /* desc_len for ata_eh_info and context */ 376 ATA_EH_DESC_LEN = 80, 377 378 /* reset / recovery action types */ 379 ATA_EH_REVALIDATE = (1 << 0), 380 ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */ 381 ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */ 382 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, 383 ATA_EH_ENABLE_LINK = (1 << 3), 384 ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */ 385 ATA_EH_GET_SUCCESS_SENSE = (1 << 6), /* Get sense data for successful cmd */ 386 ATA_EH_SET_ACTIVE = (1 << 7), /* Set a device to active power mode */ 387 388 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK | 389 ATA_EH_GET_SUCCESS_SENSE | ATA_EH_SET_ACTIVE, 390 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET | 391 ATA_EH_ENABLE_LINK, 392 393 /* ata_eh_info->flags */ 394 ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ 395 ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ 396 ATA_EHI_QUIET = (1 << 3), /* be quiet */ 397 ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */ 398 399 ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ 400 ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ 401 ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ 402 ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ 403 ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */ 404 ATA_EHI_DID_PRINT_QUIRKS = (1 << 21), /* already printed quirks info */ 405 406 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, 407 408 /* mask of flags to transfer *to* the slave link */ 409 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, 410 411 /* max tries if error condition is still set after ->error_handler */ 412 ATA_EH_MAX_TRIES = 5, 413 414 /* sometimes resuming a link requires several retries */ 415 ATA_LINK_RESUME_TRIES = 5, 416 417 /* how hard are we gonna try to probe/recover devices */ 418 ATA_EH_DEV_TRIES = 3, 419 ATA_EH_PMP_TRIES = 5, 420 ATA_EH_PMP_LINK_TRIES = 3, 421 422 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */ 423 424 /* This should match the actual table size of 425 * ata_eh_cmd_timeout_table in libata-eh.c. 426 */ 427 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 8, 428 429 /* User visible DMA mask for DMA control. DO NOT renumber. */ 430 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ 431 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ 432 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ 433 434 /* ATAPI command types */ 435 ATAPI_READ = 0, /* READs */ 436 ATAPI_WRITE = 1, /* WRITEs */ 437 ATAPI_READ_CD = 2, /* READ CD [MSF] */ 438 ATAPI_PASS_THRU = 3, /* SAT pass-thru */ 439 ATAPI_MISC = 4, /* the rest */ 440 441 /* Timing constants */ 442 ATA_TIMING_SETUP = (1 << 0), 443 ATA_TIMING_ACT8B = (1 << 1), 444 ATA_TIMING_REC8B = (1 << 2), 445 ATA_TIMING_CYC8B = (1 << 3), 446 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | 447 ATA_TIMING_CYC8B, 448 ATA_TIMING_ACTIVE = (1 << 4), 449 ATA_TIMING_RECOVER = (1 << 5), 450 ATA_TIMING_DMACK_HOLD = (1 << 6), 451 ATA_TIMING_CYCLE = (1 << 7), 452 ATA_TIMING_UDMA = (1 << 8), 453 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | 454 ATA_TIMING_REC8B | ATA_TIMING_CYC8B | 455 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | 456 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE | 457 ATA_TIMING_UDMA, 458 459 /* ACPI constants */ 460 ATA_ACPI_FILTER_SETXFER = 1 << 0, 461 ATA_ACPI_FILTER_LOCK = 1 << 1, 462 ATA_ACPI_FILTER_DIPM = 1 << 2, 463 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */ 464 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */ 465 466 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER | 467 ATA_ACPI_FILTER_LOCK | 468 ATA_ACPI_FILTER_DIPM, 469 }; 470 471 enum ata_xfer_mask { 472 ATA_MASK_PIO = ((1U << ATA_NR_PIO_MODES) - 1) << ATA_SHIFT_PIO, 473 ATA_MASK_MWDMA = ((1U << ATA_NR_MWDMA_MODES) - 1) << ATA_SHIFT_MWDMA, 474 ATA_MASK_UDMA = ((1U << ATA_NR_UDMA_MODES) - 1) << ATA_SHIFT_UDMA, 475 }; 476 477 enum hsm_task_states { 478 HSM_ST_IDLE, /* no command on going */ 479 HSM_ST_FIRST, /* (waiting the device to) 480 write CDB or first data block */ 481 HSM_ST, /* (waiting the device to) transfer data */ 482 HSM_ST_LAST, /* (waiting the device to) complete command */ 483 HSM_ST_ERR, /* error */ 484 }; 485 486 enum ata_completion_errors { 487 AC_ERR_OK = 0, /* no error */ 488 AC_ERR_DEV = (1 << 0), /* device reported error */ 489 AC_ERR_HSM = (1 << 1), /* host state machine violation */ 490 AC_ERR_TIMEOUT = (1 << 2), /* timeout */ 491 AC_ERR_MEDIA = (1 << 3), /* media error */ 492 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ 493 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ 494 AC_ERR_SYSTEM = (1 << 6), /* system error */ 495 AC_ERR_INVALID = (1 << 7), /* invalid argument */ 496 AC_ERR_OTHER = (1 << 8), /* unknown */ 497 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ 498 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ 499 }; 500 501 /* 502 * Link Power Management (LPM) policies. 503 * 504 * The default LPM policy to use for a device link is defined using these values 505 * with the CONFIG_SATA_MOBILE_LPM_POLICY config option and applied through the 506 * target_lpm_policy field of struct ata_port. 507 * 508 * If you alter this, you also need to alter the policy names used with the 509 * sysfs attribute link_power_management_policy defined in libata-sata.c. 510 */ 511 enum ata_lpm_policy { 512 /* Keep firmware settings */ 513 ATA_LPM_UNKNOWN, 514 /* No power savings (maximum performance) */ 515 ATA_LPM_MAX_POWER, 516 /* HIPM (Partial) */ 517 ATA_LPM_MED_POWER, 518 /* HIPM (Partial) and DIPM (Partial and Slumber) */ 519 ATA_LPM_MED_POWER_WITH_DIPM, 520 /* HIPM (Partial and DevSleep) and DIPM (Partial and Slumber) */ 521 ATA_LPM_MIN_POWER_WITH_PARTIAL, 522 /* HIPM (Slumber and DevSleep) and DIPM (Partial and Slumber) */ 523 ATA_LPM_MIN_POWER, 524 }; 525 526 enum ata_lpm_hints { 527 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */ 528 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */ 529 ATA_LPM_WAKE_ONLY = (1 << 2), /* only wake up link */ 530 }; 531 532 /* forward declarations */ 533 struct scsi_device; 534 struct ata_port_operations; 535 struct ata_port; 536 struct ata_link; 537 struct ata_queued_cmd; 538 539 /* typedefs */ 540 typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); 541 typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); 542 typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, 543 unsigned long deadline); 544 typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); 545 546 extern struct device_attribute dev_attr_unload_heads; 547 #ifdef CONFIG_SATA_HOST 548 extern struct device_attribute dev_attr_link_power_management_supported; 549 extern struct device_attribute dev_attr_link_power_management_policy; 550 extern struct device_attribute dev_attr_ncq_prio_supported; 551 extern struct device_attribute dev_attr_ncq_prio_enable; 552 extern struct device_attribute dev_attr_em_message_type; 553 extern struct device_attribute dev_attr_em_message; 554 extern struct device_attribute dev_attr_sw_activity; 555 #endif 556 557 enum sw_activity { 558 OFF, 559 BLINK_ON, 560 BLINK_OFF, 561 }; 562 563 struct ata_taskfile { 564 unsigned long flags; /* ATA_TFLAG_xxx */ 565 u8 protocol; /* ATA_PROT_xxx */ 566 567 u8 ctl; /* control reg */ 568 569 u8 hob_feature; /* additional data */ 570 u8 hob_nsect; /* to support LBA48 */ 571 u8 hob_lbal; 572 u8 hob_lbam; 573 u8 hob_lbah; 574 575 union { 576 u8 error; 577 u8 feature; 578 }; 579 u8 nsect; 580 u8 lbal; 581 u8 lbam; 582 u8 lbah; 583 584 u8 device; 585 586 union { 587 u8 status; 588 u8 command; 589 }; 590 591 u32 auxiliary; /* auxiliary field */ 592 /* from SATA 3.1 and */ 593 /* ATA-8 ACS-3 */ 594 }; 595 596 #ifdef CONFIG_ATA_SFF 597 struct ata_ioports { 598 void __iomem *cmd_addr; 599 void __iomem *data_addr; 600 void __iomem *error_addr; 601 void __iomem *feature_addr; 602 void __iomem *nsect_addr; 603 void __iomem *lbal_addr; 604 void __iomem *lbam_addr; 605 void __iomem *lbah_addr; 606 void __iomem *device_addr; 607 void __iomem *status_addr; 608 void __iomem *command_addr; 609 void __iomem *altstatus_addr; 610 void __iomem *ctl_addr; 611 #ifdef CONFIG_ATA_BMDMA 612 void __iomem *bmdma_addr; 613 #endif /* CONFIG_ATA_BMDMA */ 614 void __iomem *scr_addr; 615 }; 616 #endif /* CONFIG_ATA_SFF */ 617 618 struct ata_host { 619 spinlock_t lock; 620 struct device *dev; 621 void __iomem * const *iomap; 622 unsigned int n_ports; 623 unsigned int n_tags; /* nr of NCQ tags */ 624 void *private_data; 625 struct ata_port_operations *ops; 626 unsigned long flags; 627 struct kref kref; 628 629 struct mutex eh_mutex; 630 struct task_struct *eh_owner; 631 632 struct ata_port *simplex_claimed; /* channel owning the DMA */ 633 struct ata_port *ports[]; 634 }; 635 636 struct ata_queued_cmd { 637 struct ata_port *ap; 638 struct ata_device *dev; 639 640 struct scsi_cmnd *scsicmd; 641 void (*scsidone)(struct scsi_cmnd *); 642 643 struct ata_taskfile tf; 644 u8 cdb[ATAPI_CDB_LEN]; 645 646 unsigned long flags; /* ATA_QCFLAG_xxx */ 647 unsigned int tag; /* libata core tag */ 648 unsigned int hw_tag; /* driver tag */ 649 unsigned int n_elem; 650 unsigned int orig_n_elem; 651 652 int dma_dir; 653 654 unsigned int sect_size; 655 656 unsigned int nbytes; 657 unsigned int extrabytes; 658 unsigned int curbytes; 659 660 struct scatterlist sgent; 661 662 struct scatterlist *sg; 663 664 struct scatterlist *cursg; 665 unsigned int cursg_ofs; 666 667 unsigned int err_mask; 668 struct ata_taskfile result_tf; 669 ata_qc_cb_t complete_fn; 670 671 void *private_data; 672 void *lldd_task; 673 }; 674 675 struct ata_port_stats { 676 unsigned long unhandled_irq; 677 unsigned long idle_irq; 678 unsigned long rw_reqbuf; 679 }; 680 681 struct ata_ering_entry { 682 unsigned int eflags; 683 unsigned int err_mask; 684 u64 timestamp; 685 }; 686 687 struct ata_ering { 688 int cursor; 689 struct ata_ering_entry ring[ATA_ERING_SIZE]; 690 }; 691 692 struct ata_cpr { 693 u8 num; 694 u8 num_storage_elements; 695 u64 start_lba; 696 u64 num_lbas; 697 }; 698 699 struct ata_cpr_log { 700 u8 nr_cpr; 701 struct ata_cpr cpr[] __counted_by(nr_cpr); 702 }; 703 704 struct ata_cdl { 705 /* 706 * Buffer to cache the CDL log page 18h (command duration descriptors) 707 * for SCSI-ATA translation. 708 */ 709 u8 desc_log_buf[ATA_LOG_CDL_SIZE]; 710 711 /* 712 * Buffer to handle reading the sense data for successful NCQ Commands 713 * log page for commands using a CDL with one of the limits policy set 714 * to 0xD (successful completion with sense data available bit set). 715 */ 716 u8 ncq_sense_log_buf[ATA_LOG_SENSE_NCQ_SIZE]; 717 }; 718 719 struct ata_device { 720 struct ata_link *link; 721 unsigned int devno; /* 0 or 1 */ 722 u64 quirks; /* List of broken features */ 723 unsigned long flags; /* ATA_DFLAG_xxx */ 724 struct scsi_device *sdev; /* attached SCSI device */ 725 void *private_data; 726 #ifdef CONFIG_ATA_ACPI 727 union acpi_object *gtf_cache; 728 unsigned int gtf_filter; 729 #endif 730 #ifdef CONFIG_SATA_ZPODD 731 void *zpodd; 732 #endif 733 struct device tdev; 734 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */ 735 u64 n_sectors; /* size of device, if ATA */ 736 u64 n_native_sectors; /* native size, if ATA */ 737 unsigned int class; /* ATA_DEV_xxx */ 738 unsigned long unpark_deadline; 739 740 u8 pio_mode; 741 u8 dma_mode; 742 u8 xfer_mode; 743 unsigned int xfer_shift; /* ATA_SHIFT_xxx */ 744 745 unsigned int multi_count; /* sectors count for 746 READ/WRITE MULTIPLE */ 747 unsigned int max_sectors; /* per-device max sectors */ 748 unsigned int cdb_len; 749 750 /* per-dev xfer mask */ 751 unsigned int pio_mask; 752 unsigned int mwdma_mask; 753 unsigned int udma_mask; 754 755 /* for CHS addressing */ 756 u16 cylinders; /* Number of cylinders */ 757 u16 heads; /* Number of heads */ 758 u16 sectors; /* Number of sectors per track */ 759 760 union { 761 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ 762 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ 763 } ____cacheline_aligned; 764 765 /* General Purpose Log Directory log page */ 766 u8 gp_log_dir[ATA_SECT_SIZE] ____cacheline_aligned; 767 768 /* DEVSLP Timing Variables from Identify Device Data Log */ 769 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE]; 770 771 /* NCQ send and receive log subcommand support */ 772 u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE]; 773 u8 ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_SIZE]; 774 775 /* ZAC zone configuration */ 776 u32 zac_zoned_cap; 777 u32 zac_zones_optimal_open; 778 u32 zac_zones_optimal_nonseq; 779 u32 zac_zones_max_open; 780 781 /* Concurrent positioning ranges */ 782 struct ata_cpr_log *cpr_log; 783 784 /* Command Duration Limits support */ 785 struct ata_cdl *cdl; 786 787 /* error history */ 788 int spdn_cnt; 789 /* ering is CLEAR_END, read comment above CLEAR_END */ 790 struct ata_ering ering; 791 792 /* For EH */ 793 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned; 794 }; 795 796 /* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are 797 * cleared to zero on ata_dev_init(). 798 */ 799 #define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors) 800 #define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering) 801 802 struct ata_eh_info { 803 struct ata_device *dev; /* offending device */ 804 u32 serror; /* SError from LLDD */ 805 unsigned int err_mask; /* port-wide err_mask */ 806 unsigned int action; /* ATA_EH_* action mask */ 807 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ 808 unsigned int flags; /* ATA_EHI_* flags */ 809 810 unsigned int probe_mask; 811 812 char desc[ATA_EH_DESC_LEN]; 813 int desc_len; 814 }; 815 816 struct ata_eh_context { 817 struct ata_eh_info i; 818 int tries[ATA_MAX_DEVICES]; 819 int cmd_timeout_idx[ATA_MAX_DEVICES] 820 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE]; 821 unsigned int classes[ATA_MAX_DEVICES]; 822 unsigned int did_probe_mask; 823 unsigned int unloaded_mask; 824 unsigned int saved_ncq_enabled; 825 u8 saved_xfer_mode[ATA_MAX_DEVICES]; 826 /* timestamp for the last reset attempt or success */ 827 unsigned long last_reset; 828 }; 829 830 struct ata_acpi_drive 831 { 832 u32 pio; 833 u32 dma; 834 } __packed; 835 836 struct ata_acpi_gtm { 837 struct ata_acpi_drive drive[2]; 838 u32 flags; 839 } __packed; 840 841 struct ata_link { 842 struct ata_port *ap; 843 int pmp; /* port multiplier port # */ 844 845 struct device tdev; 846 unsigned int active_tag; /* active tag on this link */ 847 u32 sactive; /* active NCQ commands */ 848 849 unsigned int flags; /* ATA_LFLAG_xxx */ 850 851 u32 saved_scontrol; /* SControl on probe */ 852 unsigned int hw_sata_spd_limit; 853 unsigned int sata_spd_limit; 854 unsigned int sata_spd; /* current SATA PHY speed */ 855 enum ata_lpm_policy lpm_policy; 856 857 /* record runtime error info, protected by host_set lock */ 858 struct ata_eh_info eh_info; 859 /* EH context */ 860 struct ata_eh_context eh_context; 861 862 struct ata_device device[ATA_MAX_DEVICES]; 863 864 unsigned long last_lpm_change; /* when last LPM change happened */ 865 }; 866 #define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag) 867 #define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0]) 868 869 struct ata_port { 870 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ 871 struct ata_port_operations *ops; 872 spinlock_t *lock; 873 /* Flags owned by the EH context. Only EH should touch these once the 874 port is active */ 875 unsigned long flags; /* ATA_FLAG_xxx */ 876 /* Flags that change dynamically, protected by ap->lock */ 877 unsigned int pflags; /* ATA_PFLAG_xxx */ 878 unsigned int print_id; /* user visible unique port ID */ 879 unsigned int port_no; /* 0 based port no. inside the host */ 880 881 #ifdef CONFIG_ATA_SFF 882 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ 883 u8 ctl; /* cache of ATA control register */ 884 u8 last_ctl; /* Cache last written value */ 885 struct ata_link* sff_pio_task_link; /* link currently used */ 886 struct delayed_work sff_pio_task; 887 #ifdef CONFIG_ATA_BMDMA 888 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */ 889 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */ 890 #endif /* CONFIG_ATA_BMDMA */ 891 #endif /* CONFIG_ATA_SFF */ 892 893 unsigned int pio_mask; 894 unsigned int mwdma_mask; 895 unsigned int udma_mask; 896 unsigned int cbl; /* cable type; ATA_CBL_xxx */ 897 898 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE + 1]; 899 u64 qc_active; 900 int nr_active_links; /* #links with active qcs */ 901 902 struct work_struct deferred_qc_work; 903 struct ata_queued_cmd *deferred_qc; 904 905 struct ata_link link; /* host default link */ 906 struct ata_link *slave_link; /* see ata_slave_link_init() */ 907 908 int nr_pmp_links; /* nr of available PMP links */ 909 struct ata_link *pmp_link; /* array of PMP links */ 910 struct ata_link *excl_link; /* for PMP qc exclusion */ 911 912 struct ata_port_stats stats; 913 struct ata_host *host; 914 struct device *dev; 915 struct device tdev; 916 917 struct mutex scsi_scan_mutex; 918 struct delayed_work hotplug_task; 919 struct delayed_work scsi_rescan_task; 920 921 unsigned int hsm_task_state; 922 923 struct list_head eh_done_q; 924 wait_queue_head_t eh_wait_q; 925 int eh_tries; 926 struct completion park_req_pending; 927 928 pm_message_t pm_mesg; 929 enum ata_lpm_policy target_lpm_policy; 930 931 struct timer_list fastdrain_timer; 932 unsigned int fastdrain_cnt; 933 934 async_cookie_t cookie; 935 936 int em_message_type; 937 void *private_data; 938 939 #ifdef CONFIG_ATA_ACPI 940 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */ 941 #endif 942 }; 943 944 /* The following initializer overrides a method to NULL whether one of 945 * its parent has the method defined or not. This is equivalent to 946 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant 947 * expression and thus can't be used as an initializer. 948 */ 949 #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT) 950 951 struct ata_reset_operations { 952 ata_prereset_fn_t prereset; 953 ata_reset_fn_t softreset; 954 ata_reset_fn_t hardreset; 955 ata_postreset_fn_t postreset; 956 }; 957 958 struct ata_port_operations { 959 /* 960 * Command execution 961 */ 962 int (*qc_defer)(struct ata_queued_cmd *qc); 963 int (*check_atapi_dma)(struct ata_queued_cmd *qc); 964 enum ata_completion_errors (*qc_prep)(struct ata_queued_cmd *qc); 965 unsigned int (*qc_issue)(struct ata_queued_cmd *qc); 966 void (*qc_fill_rtf)(struct ata_queued_cmd *qc); 967 void (*qc_ncq_fill_rtf)(struct ata_port *ap, u64 done_mask); 968 969 /* 970 * Configuration and exception handling 971 */ 972 int (*cable_detect)(struct ata_port *ap); 973 unsigned int (*mode_filter)(struct ata_device *dev, unsigned int xfer_mask); 974 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev); 975 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev); 976 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev); 977 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, 978 __le16 *id); 979 980 void (*dev_config)(struct ata_device *dev); 981 982 void (*freeze)(struct ata_port *ap); 983 void (*thaw)(struct ata_port *ap); 984 struct ata_reset_operations reset; 985 struct ata_reset_operations pmp_reset; 986 void (*error_handler)(struct ata_port *ap); 987 void (*lost_interrupt)(struct ata_port *ap); 988 void (*post_internal_cmd)(struct ata_queued_cmd *qc); 989 void (*sched_eh)(struct ata_port *ap); 990 void (*end_eh)(struct ata_port *ap); 991 992 /* 993 * Optional features 994 */ 995 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val); 996 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val); 997 void (*pmp_attach)(struct ata_port *ap); 998 void (*pmp_detach)(struct ata_port *ap); 999 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy, 1000 unsigned hints); 1001 1002 /* 1003 * Start, stop, suspend and resume 1004 */ 1005 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg); 1006 int (*port_resume)(struct ata_port *ap); 1007 int (*port_start)(struct ata_port *ap); 1008 void (*port_stop)(struct ata_port *ap); 1009 void (*host_stop)(struct ata_host *host); 1010 1011 #ifdef CONFIG_ATA_SFF 1012 /* 1013 * SFF / taskfile oriented ops 1014 */ 1015 void (*sff_dev_select)(struct ata_port *ap, unsigned int device); 1016 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl); 1017 u8 (*sff_check_status)(struct ata_port *ap); 1018 u8 (*sff_check_altstatus)(struct ata_port *ap); 1019 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf); 1020 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf); 1021 void (*sff_exec_command)(struct ata_port *ap, 1022 const struct ata_taskfile *tf); 1023 unsigned int (*sff_data_xfer)(struct ata_queued_cmd *qc, 1024 unsigned char *buf, unsigned int buflen, int rw); 1025 void (*sff_irq_on)(struct ata_port *); 1026 bool (*sff_irq_check)(struct ata_port *); 1027 void (*sff_irq_clear)(struct ata_port *); 1028 void (*sff_drain_fifo)(struct ata_queued_cmd *qc); 1029 1030 #ifdef CONFIG_ATA_BMDMA 1031 void (*bmdma_setup)(struct ata_queued_cmd *qc); 1032 void (*bmdma_start)(struct ata_queued_cmd *qc); 1033 void (*bmdma_stop)(struct ata_queued_cmd *qc); 1034 u8 (*bmdma_status)(struct ata_port *ap); 1035 #endif /* CONFIG_ATA_BMDMA */ 1036 #endif /* CONFIG_ATA_SFF */ 1037 1038 ssize_t (*em_show)(struct ata_port *ap, char *buf); 1039 ssize_t (*em_store)(struct ata_port *ap, const char *message, 1040 size_t size); 1041 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf); 1042 ssize_t (*sw_activity_store)(struct ata_device *dev, 1043 enum sw_activity val); 1044 ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state, 1045 ssize_t size); 1046 1047 /* 1048 * ->inherits must be the last field and all the preceding 1049 * fields must be pointers. 1050 */ 1051 const struct ata_port_operations *inherits; 1052 }; 1053 1054 struct ata_port_info { 1055 unsigned long flags; 1056 unsigned long link_flags; 1057 unsigned int pio_mask; 1058 unsigned int mwdma_mask; 1059 unsigned int udma_mask; 1060 struct ata_port_operations *port_ops; 1061 void *private_data; 1062 }; 1063 1064 struct ata_timing { 1065 unsigned short mode; /* ATA mode */ 1066 unsigned short setup; /* t1 */ 1067 unsigned short act8b; /* t2 for 8-bit I/O */ 1068 unsigned short rec8b; /* t2i for 8-bit I/O */ 1069 unsigned short cyc8b; /* t0 for 8-bit I/O */ 1070 unsigned short active; /* t2 or tD */ 1071 unsigned short recover; /* t2i or tK */ 1072 unsigned short dmack_hold; /* tj */ 1073 unsigned short cycle; /* t0 */ 1074 unsigned short udma; /* t2CYCTYP/2 */ 1075 }; 1076 1077 /* 1078 * Core layer - drivers/ata/libata-core.c 1079 */ 1080 extern struct ata_port_operations ata_dummy_port_ops; 1081 extern const struct ata_port_info ata_dummy_port_info; 1082 1083 static inline bool ata_is_atapi(u8 prot) 1084 { 1085 return prot & ATA_PROT_FLAG_ATAPI; 1086 } 1087 1088 static inline bool ata_is_pio(u8 prot) 1089 { 1090 return prot & ATA_PROT_FLAG_PIO; 1091 } 1092 1093 static inline bool ata_is_dma(u8 prot) 1094 { 1095 return prot & ATA_PROT_FLAG_DMA; 1096 } 1097 1098 static inline bool ata_is_ncq(u8 prot) 1099 { 1100 return prot & ATA_PROT_FLAG_NCQ; 1101 } 1102 1103 static inline bool ata_is_data(u8 prot) 1104 { 1105 return prot & (ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA); 1106 } 1107 1108 static inline int is_multi_taskfile(struct ata_taskfile *tf) 1109 { 1110 return (tf->command == ATA_CMD_READ_MULTI) || 1111 (tf->command == ATA_CMD_WRITE_MULTI) || 1112 (tf->command == ATA_CMD_READ_MULTI_EXT) || 1113 (tf->command == ATA_CMD_WRITE_MULTI_EXT) || 1114 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); 1115 } 1116 1117 static inline int ata_port_is_dummy(struct ata_port *ap) 1118 { 1119 return ap->ops == &ata_dummy_port_ops; 1120 } 1121 1122 static inline bool ata_port_is_frozen(const struct ata_port *ap) 1123 { 1124 return ap->pflags & ATA_PFLAG_FROZEN; 1125 } 1126 1127 extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); 1128 extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, 1129 int (*check_ready)(struct ata_link *link)); 1130 extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); 1131 1132 extern struct ata_host *ata_host_alloc(struct device *dev, int n_ports); 1133 extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, 1134 const struct ata_port_info * const * ppi, int n_ports); 1135 extern void ata_host_get(struct ata_host *host); 1136 extern void ata_host_put(struct ata_host *host); 1137 extern int ata_host_start(struct ata_host *host); 1138 extern int ata_host_register(struct ata_host *host, 1139 const struct scsi_host_template *sht); 1140 extern int ata_host_activate(struct ata_host *host, int irq, 1141 irq_handler_t irq_handler, unsigned long irq_flags, 1142 const struct scsi_host_template *sht); 1143 extern void ata_host_detach(struct ata_host *host); 1144 extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *); 1145 extern int ata_scsi_ioctl(struct scsi_device *dev, unsigned int cmd, 1146 void __user *arg); 1147 #ifdef CONFIG_COMPAT 1148 #define ATA_SCSI_COMPAT_IOCTL .compat_ioctl = ata_scsi_ioctl, 1149 #else 1150 #define ATA_SCSI_COMPAT_IOCTL /* empty */ 1151 #endif 1152 extern enum scsi_qc_status ata_scsi_queuecmd(struct Scsi_Host *h, 1153 struct scsi_cmnd *cmd); 1154 #if IS_REACHABLE(CONFIG_ATA) 1155 bool ata_scsi_dma_need_drain(struct request *rq); 1156 #else 1157 #define ata_scsi_dma_need_drain NULL 1158 #endif 1159 extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev, 1160 unsigned int cmd, void __user *arg); 1161 extern bool ata_link_online(struct ata_link *link); 1162 extern bool ata_link_offline(struct ata_link *link); 1163 #ifdef CONFIG_PM 1164 extern void ata_host_suspend(struct ata_host *host, pm_message_t mesg); 1165 extern void ata_host_resume(struct ata_host *host); 1166 extern void ata_sas_port_suspend(struct ata_port *ap); 1167 extern void ata_sas_port_resume(struct ata_port *ap); 1168 #else 1169 static inline void ata_sas_port_suspend(struct ata_port *ap) 1170 { 1171 } 1172 static inline void ata_sas_port_resume(struct ata_port *ap) 1173 { 1174 } 1175 #endif 1176 extern int ata_ratelimit(void); 1177 extern void ata_msleep(struct ata_port *ap, unsigned int msecs); 1178 extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask, 1179 u32 val, unsigned int interval, unsigned int timeout); 1180 extern int atapi_cmd_type(u8 opcode); 1181 extern unsigned int ata_pack_xfermask(unsigned int pio_mask, 1182 unsigned int mwdma_mask, 1183 unsigned int udma_mask); 1184 extern void ata_unpack_xfermask(unsigned int xfer_mask, 1185 unsigned int *pio_mask, 1186 unsigned int *mwdma_mask, 1187 unsigned int *udma_mask); 1188 extern u8 ata_xfer_mask2mode(unsigned int xfer_mask); 1189 extern unsigned int ata_xfer_mode2mask(u8 xfer_mode); 1190 extern int ata_xfer_mode2shift(u8 xfer_mode); 1191 extern const char *ata_mode_string(unsigned int xfer_mask); 1192 extern unsigned int ata_id_xfermask(const u16 *id); 1193 extern int ata_std_qc_defer(struct ata_queued_cmd *qc); 1194 extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, 1195 unsigned int n_elem); 1196 extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); 1197 extern unsigned int ata_port_classify(struct ata_port *ap, 1198 const struct ata_taskfile *tf); 1199 extern void ata_dev_disable(struct ata_device *adev); 1200 extern void ata_id_string(const u16 *id, unsigned char *s, 1201 unsigned int ofs, unsigned int len); 1202 extern void ata_id_c_string(const u16 *id, unsigned char *s, 1203 unsigned int ofs, unsigned int len); 1204 extern unsigned int ata_do_dev_read_id(struct ata_device *dev, 1205 struct ata_taskfile *tf, __le16 *id); 1206 extern void ata_qc_complete(struct ata_queued_cmd *qc); 1207 extern u64 ata_qc_get_active(struct ata_port *ap); 1208 extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd); 1209 extern int ata_std_bios_param(struct scsi_device *sdev, 1210 struct gendisk *unused, 1211 sector_t capacity, int geom[]); 1212 extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev); 1213 extern int ata_scsi_sdev_init(struct scsi_device *sdev); 1214 int ata_scsi_sdev_configure(struct scsi_device *sdev, struct queue_limits *lim); 1215 extern void ata_scsi_sdev_destroy(struct scsi_device *sdev); 1216 extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, 1217 int queue_depth); 1218 extern int ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, 1219 int queue_depth); 1220 extern int ata_ncq_prio_supported(struct ata_port *ap, struct scsi_device *sdev, 1221 bool *supported); 1222 extern int ata_ncq_prio_enabled(struct ata_port *ap, struct scsi_device *sdev, 1223 bool *enabled); 1224 extern int ata_ncq_prio_enable(struct ata_port *ap, struct scsi_device *sdev, 1225 bool enable); 1226 extern struct ata_device *ata_dev_pair(struct ata_device *adev); 1227 int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); 1228 extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap); 1229 extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q); 1230 1231 /* 1232 * SATA specific code - drivers/ata/libata-sata.c 1233 */ 1234 #ifdef CONFIG_SATA_HOST 1235 extern const unsigned int sata_deb_timing_normal[]; 1236 extern const unsigned int sata_deb_timing_hotplug[]; 1237 extern const unsigned int sata_deb_timing_long[]; 1238 1239 static inline const unsigned int * 1240 sata_ehc_deb_timing(struct ata_eh_context *ehc) 1241 { 1242 if (ehc->i.flags & ATA_EHI_HOTPLUGGED) 1243 return sata_deb_timing_hotplug; 1244 else 1245 return sata_deb_timing_normal; 1246 } 1247 1248 extern int sata_scr_valid(struct ata_link *link); 1249 extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); 1250 extern int sata_scr_write(struct ata_link *link, int reg, u32 val); 1251 extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); 1252 extern int sata_set_spd(struct ata_link *link); 1253 int sata_std_hardreset(struct ata_link *link, unsigned int *class, 1254 unsigned long deadline); 1255 extern int sata_link_hardreset(struct ata_link *link, 1256 const unsigned int *timing, unsigned long deadline, 1257 bool *online, int (*check_ready)(struct ata_link *)); 1258 extern int sata_link_resume(struct ata_link *link, const unsigned int *params, 1259 unsigned long deadline); 1260 extern void ata_eh_analyze_ncq_error(struct ata_link *link); 1261 #else 1262 static inline const unsigned int * 1263 sata_ehc_deb_timing(struct ata_eh_context *ehc) 1264 { 1265 return NULL; 1266 } 1267 static inline int sata_scr_valid(struct ata_link *link) { return 0; } 1268 static inline int sata_scr_read(struct ata_link *link, int reg, u32 *val) 1269 { 1270 return -EOPNOTSUPP; 1271 } 1272 static inline int sata_scr_write(struct ata_link *link, int reg, u32 val) 1273 { 1274 return -EOPNOTSUPP; 1275 } 1276 static inline int sata_scr_write_flush(struct ata_link *link, int reg, u32 val) 1277 { 1278 return -EOPNOTSUPP; 1279 } 1280 static inline int sata_set_spd(struct ata_link *link) { return -EOPNOTSUPP; } 1281 static inline int sata_std_hardreset(struct ata_link *link, unsigned int *class, 1282 unsigned long deadline) 1283 { 1284 return -EOPNOTSUPP; 1285 } 1286 static inline int sata_link_hardreset(struct ata_link *link, 1287 const unsigned int *timing, 1288 unsigned long deadline, 1289 bool *online, 1290 int (*check_ready)(struct ata_link *)) 1291 { 1292 if (online) 1293 *online = false; 1294 return -EOPNOTSUPP; 1295 } 1296 static inline int sata_link_resume(struct ata_link *link, 1297 const unsigned int *params, 1298 unsigned long deadline) 1299 { 1300 return -EOPNOTSUPP; 1301 } 1302 static inline void ata_eh_analyze_ncq_error(struct ata_link *link) { } 1303 #endif 1304 extern int sata_link_debounce(struct ata_link *link, 1305 const unsigned int *params, unsigned long deadline); 1306 extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy, 1307 bool spm_wakeup); 1308 extern int ata_slave_link_init(struct ata_port *ap); 1309 extern void ata_port_probe(struct ata_port *ap); 1310 extern struct ata_port *ata_port_alloc(struct ata_host *host); 1311 extern void ata_port_free(struct ata_port *ap); 1312 extern int ata_tport_add(struct device *parent, struct ata_port *ap); 1313 extern void ata_tport_delete(struct ata_port *ap); 1314 int ata_sas_sdev_configure(struct scsi_device *sdev, struct queue_limits *lim, 1315 struct ata_port *ap); 1316 extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap); 1317 extern void ata_tf_to_fis(const struct ata_taskfile *tf, 1318 u8 pmp, int is_cmd, u8 *fis); 1319 extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); 1320 extern int ata_qc_complete_multiple(struct ata_port *ap, u64 qc_active); 1321 extern bool sata_lpm_ignore_phy_events(struct ata_link *link); 1322 extern int sata_async_notification(struct ata_port *ap); 1323 1324 extern int ata_cable_40wire(struct ata_port *ap); 1325 extern int ata_cable_80wire(struct ata_port *ap); 1326 extern int ata_cable_sata(struct ata_port *ap); 1327 extern int ata_cable_ignore(struct ata_port *ap); 1328 extern int ata_cable_unknown(struct ata_port *ap); 1329 1330 /* Timing helpers */ 1331 extern unsigned int ata_pio_need_iordy(const struct ata_device *); 1332 extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); 1333 1334 /* PCI */ 1335 #ifdef CONFIG_PCI 1336 struct pci_dev; 1337 1338 struct pci_bits { 1339 unsigned int reg; /* PCI config register to read */ 1340 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ 1341 unsigned long mask; 1342 unsigned long val; 1343 }; 1344 1345 extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); 1346 extern void ata_pci_shutdown_one(struct pci_dev *pdev); 1347 extern void ata_pci_remove_one(struct pci_dev *pdev); 1348 1349 #ifdef CONFIG_PM 1350 extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); 1351 extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); 1352 extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); 1353 extern int ata_pci_device_resume(struct pci_dev *pdev); 1354 #endif /* CONFIG_PM */ 1355 #endif /* CONFIG_PCI */ 1356 1357 struct platform_device; 1358 1359 extern void ata_platform_remove_one(struct platform_device *pdev); 1360 1361 /* 1362 * ACPI - drivers/ata/libata-acpi.c 1363 */ 1364 #ifdef CONFIG_ATA_ACPI 1365 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1366 { 1367 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) 1368 return &ap->__acpi_init_gtm; 1369 return NULL; 1370 } 1371 int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); 1372 int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); 1373 unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, 1374 const struct ata_acpi_gtm *gtm); 1375 int ata_acpi_cbl_pata_type(struct ata_port *ap); 1376 #else 1377 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1378 { 1379 return NULL; 1380 } 1381 1382 static inline int ata_acpi_stm(const struct ata_port *ap, 1383 struct ata_acpi_gtm *stm) 1384 { 1385 return -ENOSYS; 1386 } 1387 1388 static inline int ata_acpi_gtm(const struct ata_port *ap, 1389 struct ata_acpi_gtm *stm) 1390 { 1391 return -ENOSYS; 1392 } 1393 1394 static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, 1395 const struct ata_acpi_gtm *gtm) 1396 { 1397 return 0; 1398 } 1399 1400 static inline int ata_acpi_cbl_pata_type(struct ata_port *ap) 1401 { 1402 return ATA_CBL_PATA40; 1403 } 1404 #endif 1405 1406 /* 1407 * EH - drivers/ata/libata-eh.c 1408 */ 1409 extern void ata_port_schedule_eh(struct ata_port *ap); 1410 extern void ata_port_wait_eh(struct ata_port *ap); 1411 extern int ata_link_abort(struct ata_link *link); 1412 extern int ata_port_abort(struct ata_port *ap); 1413 extern int ata_port_freeze(struct ata_port *ap); 1414 1415 extern void ata_eh_freeze_port(struct ata_port *ap); 1416 extern void ata_eh_thaw_port(struct ata_port *ap); 1417 1418 extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); 1419 extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); 1420 1421 extern void ata_std_error_handler(struct ata_port *ap); 1422 extern void ata_std_sched_eh(struct ata_port *ap); 1423 extern void ata_std_end_eh(struct ata_port *ap); 1424 extern int ata_link_nr_enabled(struct ata_link *link); 1425 1426 /* 1427 * Base operations to inherit from and initializers for sht 1428 * 1429 * Operations 1430 * 1431 * base : Common to all libata drivers. 1432 * sata : SATA controllers w/ native interface. 1433 * pmp : SATA controllers w/ PMP support. 1434 * sff : SFF ATA controllers w/o BMDMA support. 1435 * bmdma : SFF ATA controllers w/ BMDMA support. 1436 * 1437 * sht initializers 1438 * 1439 * BASE : Common to all libata drivers. The user must set 1440 * sg_tablesize and dma_boundary. 1441 * PIO : SFF ATA controllers w/ only PIO support. 1442 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and 1443 * dma_boundary are set to BMDMA limits. 1444 * NCQ : SATA controllers supporting NCQ. The user must set 1445 * sg_tablesize, dma_boundary and can_queue. 1446 */ 1447 extern const struct ata_port_operations ata_base_port_ops; 1448 extern const struct ata_port_operations sata_port_ops; 1449 extern const struct attribute_group *ata_common_sdev_groups[]; 1450 1451 /* 1452 * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated 1453 * by the edge drivers. Because the 'module' field of sht must be the 1454 * edge driver's module reference, otherwise the driver can be unloaded 1455 * even if the scsi_device is being accessed. 1456 */ 1457 #define __ATA_BASE_SHT(drv_name) \ 1458 .module = THIS_MODULE, \ 1459 .name = drv_name, \ 1460 .ioctl = ata_scsi_ioctl, \ 1461 ATA_SCSI_COMPAT_IOCTL \ 1462 .queuecommand = ata_scsi_queuecmd, \ 1463 .dma_need_drain = ata_scsi_dma_need_drain, \ 1464 .this_id = ATA_SHT_THIS_ID, \ 1465 .emulated = ATA_SHT_EMULATED, \ 1466 .proc_name = drv_name, \ 1467 .sdev_init = ata_scsi_sdev_init, \ 1468 .sdev_destroy = ata_scsi_sdev_destroy, \ 1469 .bios_param = ata_std_bios_param, \ 1470 .unlock_native_capacity = ata_scsi_unlock_native_capacity,\ 1471 .max_sectors = ATA_MAX_SECTORS_LBA48 1472 1473 #define ATA_SUBBASE_SHT(drv_name) \ 1474 __ATA_BASE_SHT(drv_name), \ 1475 .can_queue = ATA_DEF_QUEUE, \ 1476 .tag_alloc_policy_rr = true, \ 1477 .sdev_configure = ata_scsi_sdev_configure 1478 1479 #define ATA_SUBBASE_SHT_QD(drv_name, drv_qd) \ 1480 __ATA_BASE_SHT(drv_name), \ 1481 .can_queue = drv_qd, \ 1482 .tag_alloc_policy_rr = true, \ 1483 .sdev_configure = ata_scsi_sdev_configure 1484 1485 #define ATA_BASE_SHT(drv_name) \ 1486 ATA_SUBBASE_SHT(drv_name), \ 1487 .sdev_groups = ata_common_sdev_groups 1488 1489 #ifdef CONFIG_SATA_HOST 1490 extern const struct attribute_group *ata_ncq_sdev_groups[]; 1491 1492 #define ATA_NCQ_SHT(drv_name) \ 1493 ATA_SUBBASE_SHT(drv_name), \ 1494 .sdev_groups = ata_ncq_sdev_groups, \ 1495 .change_queue_depth = ata_scsi_change_queue_depth 1496 1497 #define ATA_NCQ_SHT_QD(drv_name, drv_qd) \ 1498 ATA_SUBBASE_SHT_QD(drv_name, drv_qd), \ 1499 .sdev_groups = ata_ncq_sdev_groups, \ 1500 .change_queue_depth = ata_scsi_change_queue_depth 1501 #endif 1502 1503 /* 1504 * PMP helpers 1505 */ 1506 #ifdef CONFIG_SATA_PMP 1507 static inline bool sata_pmp_supported(struct ata_port *ap) 1508 { 1509 return ap->flags & ATA_FLAG_PMP; 1510 } 1511 1512 static inline bool sata_pmp_attached(struct ata_port *ap) 1513 { 1514 return ap->nr_pmp_links != 0; 1515 } 1516 1517 static inline bool ata_is_host_link(const struct ata_link *link) 1518 { 1519 return link == &link->ap->link || link == link->ap->slave_link; 1520 } 1521 #else /* CONFIG_SATA_PMP */ 1522 static inline bool sata_pmp_supported(struct ata_port *ap) 1523 { 1524 return false; 1525 } 1526 1527 static inline bool sata_pmp_attached(struct ata_port *ap) 1528 { 1529 return false; 1530 } 1531 1532 static inline bool ata_is_host_link(const struct ata_link *link) 1533 { 1534 return true; 1535 } 1536 #endif /* CONFIG_SATA_PMP */ 1537 1538 static inline int sata_srst_pmp(struct ata_link *link) 1539 { 1540 if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) 1541 return SATA_PMP_CTRL_PORT; 1542 return link->pmp; 1543 } 1544 1545 #define ata_port_printk(level, ap, fmt, ...) \ 1546 pr_ ## level ("ata%u: " fmt, (ap)->print_id, ##__VA_ARGS__) 1547 1548 #define ata_port_err(ap, fmt, ...) \ 1549 ata_port_printk(err, ap, fmt, ##__VA_ARGS__) 1550 #define ata_port_warn(ap, fmt, ...) \ 1551 ata_port_printk(warn, ap, fmt, ##__VA_ARGS__) 1552 #define ata_port_notice(ap, fmt, ...) \ 1553 ata_port_printk(notice, ap, fmt, ##__VA_ARGS__) 1554 #define ata_port_info(ap, fmt, ...) \ 1555 ata_port_printk(info, ap, fmt, ##__VA_ARGS__) 1556 #define ata_port_dbg(ap, fmt, ...) \ 1557 ata_port_printk(debug, ap, fmt, ##__VA_ARGS__) 1558 1559 #define ata_link_printk(level, link, fmt, ...) \ 1560 do { \ 1561 if (sata_pmp_attached((link)->ap) || \ 1562 (link)->ap->slave_link) \ 1563 pr_ ## level ("ata%u.%02u: " fmt, \ 1564 (link)->ap->print_id, \ 1565 (link)->pmp, \ 1566 ##__VA_ARGS__); \ 1567 else \ 1568 pr_ ## level ("ata%u: " fmt, \ 1569 (link)->ap->print_id, \ 1570 ##__VA_ARGS__); \ 1571 } while (0) 1572 1573 #define ata_link_err(link, fmt, ...) \ 1574 ata_link_printk(err, link, fmt, ##__VA_ARGS__) 1575 #define ata_link_warn(link, fmt, ...) \ 1576 ata_link_printk(warn, link, fmt, ##__VA_ARGS__) 1577 #define ata_link_notice(link, fmt, ...) \ 1578 ata_link_printk(notice, link, fmt, ##__VA_ARGS__) 1579 #define ata_link_info(link, fmt, ...) \ 1580 ata_link_printk(info, link, fmt, ##__VA_ARGS__) 1581 #define ata_link_dbg(link, fmt, ...) \ 1582 ata_link_printk(debug, link, fmt, ##__VA_ARGS__) 1583 1584 #define ata_dev_printk(level, dev, fmt, ...) \ 1585 pr_ ## level("ata%u.%02u: " fmt, \ 1586 (dev)->link->ap->print_id, \ 1587 (dev)->link->pmp + (dev)->devno, \ 1588 ##__VA_ARGS__) 1589 1590 #define ata_dev_err(dev, fmt, ...) \ 1591 ata_dev_printk(err, dev, fmt, ##__VA_ARGS__) 1592 #define ata_dev_warn(dev, fmt, ...) \ 1593 ata_dev_printk(warn, dev, fmt, ##__VA_ARGS__) 1594 #define ata_dev_notice(dev, fmt, ...) \ 1595 ata_dev_printk(notice, dev, fmt, ##__VA_ARGS__) 1596 #define ata_dev_info(dev, fmt, ...) \ 1597 ata_dev_printk(info, dev, fmt, ##__VA_ARGS__) 1598 #define ata_dev_dbg(dev, fmt, ...) \ 1599 ata_dev_printk(debug, dev, fmt, ##__VA_ARGS__) 1600 1601 #define ata_dev_warn_once(dev, fmt, ...) \ 1602 pr_warn_once("ata%u.%02u: " fmt, \ 1603 (dev)->link->ap->print_id, \ 1604 (dev)->link->pmp + (dev)->devno, \ 1605 ##__VA_ARGS__) 1606 1607 static inline void ata_print_version_once(const struct device *dev, 1608 const char *version) 1609 { 1610 dev_dbg_once(dev, "version %s\n", version); 1611 } 1612 1613 /* 1614 * ata_eh_info helpers 1615 */ 1616 extern __printf(2, 3) 1617 void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); 1618 extern __printf(2, 3) 1619 void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); 1620 extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); 1621 1622 static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) 1623 { 1624 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; 1625 ehi->flags |= ATA_EHI_HOTPLUGGED; 1626 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK; 1627 ehi->err_mask |= AC_ERR_ATA_BUS; 1628 } 1629 1630 /* 1631 * port description helpers 1632 */ 1633 extern __printf(2, 3) 1634 void ata_port_desc(struct ata_port *ap, const char *fmt, ...); 1635 #ifdef CONFIG_PCI 1636 extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, 1637 const char *name); 1638 #endif 1639 static inline void ata_port_desc_misc(struct ata_port *ap, int irq) 1640 { 1641 ata_port_desc(ap, "irq %d", irq); 1642 ata_port_desc(ap, "lpm-pol %d", ap->target_lpm_policy); 1643 if (ap->pflags & ATA_PFLAG_EXTERNAL) 1644 ata_port_desc(ap, "ext"); 1645 } 1646 1647 static inline bool ata_tag_internal(unsigned int tag) 1648 { 1649 return tag == ATA_TAG_INTERNAL; 1650 } 1651 1652 static inline bool ata_tag_valid(unsigned int tag) 1653 { 1654 return tag < ATA_MAX_QUEUE || ata_tag_internal(tag); 1655 } 1656 1657 #define __ata_qc_for_each(ap, qc, tag, max_tag, fn) \ 1658 for ((tag) = 0; (tag) < (max_tag) && \ 1659 ({ qc = fn((ap), (tag)); 1; }); (tag)++) \ 1660 1661 /* 1662 * Internal use only, iterate commands ignoring error handling and 1663 * status of 'qc'. 1664 */ 1665 #define ata_qc_for_each_raw(ap, qc, tag) \ 1666 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, __ata_qc_from_tag) 1667 1668 /* 1669 * Iterate all potential commands that can be queued 1670 */ 1671 #define ata_qc_for_each(ap, qc, tag) \ 1672 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, ata_qc_from_tag) 1673 1674 /* 1675 * Like ata_qc_for_each, but with the internal tag included 1676 */ 1677 #define ata_qc_for_each_with_internal(ap, qc, tag) \ 1678 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE + 1, ata_qc_from_tag) 1679 1680 /* 1681 * device helpers 1682 */ 1683 static inline unsigned int ata_class_enabled(unsigned int class) 1684 { 1685 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || 1686 class == ATA_DEV_PMP || class == ATA_DEV_SEMB || 1687 class == ATA_DEV_ZAC; 1688 } 1689 1690 static inline unsigned int ata_class_disabled(unsigned int class) 1691 { 1692 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || 1693 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP || 1694 class == ATA_DEV_ZAC_UNSUP; 1695 } 1696 1697 static inline unsigned int ata_class_absent(unsigned int class) 1698 { 1699 return !ata_class_enabled(class) && !ata_class_disabled(class); 1700 } 1701 1702 static inline unsigned int ata_dev_enabled(const struct ata_device *dev) 1703 { 1704 return ata_class_enabled(dev->class); 1705 } 1706 1707 static inline unsigned int ata_dev_disabled(const struct ata_device *dev) 1708 { 1709 return ata_class_disabled(dev->class); 1710 } 1711 1712 static inline unsigned int ata_dev_absent(const struct ata_device *dev) 1713 { 1714 return ata_class_absent(dev->class); 1715 } 1716 1717 /* 1718 * link helpers 1719 */ 1720 static inline int ata_link_max_devices(const struct ata_link *link) 1721 { 1722 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) 1723 return 2; 1724 return 1; 1725 } 1726 1727 static inline int ata_link_active(struct ata_link *link) 1728 { 1729 return ata_tag_valid(link->active_tag) || link->sactive; 1730 } 1731 1732 /* 1733 * Iterators 1734 * 1735 * ATA_LITER_* constants are used to select link iteration mode and 1736 * ATA_DITER_* device iteration mode. 1737 * 1738 * For a custom iteration directly using ata_{link|dev}_next(), if 1739 * @link or @dev, respectively, is NULL, the first element is 1740 * returned. @dev and @link can be any valid device or link and the 1741 * next element according to the iteration mode will be returned. 1742 * After the last element, NULL is returned. 1743 */ 1744 enum ata_link_iter_mode { 1745 ATA_LITER_EDGE, /* if present, PMP links only; otherwise, 1746 * host link. no slave link */ 1747 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */ 1748 ATA_LITER_PMP_FIRST, /* PMP links followed by host link, 1749 * slave link still comes after host link */ 1750 }; 1751 1752 enum ata_dev_iter_mode { 1753 ATA_DITER_ENABLED, 1754 ATA_DITER_ENABLED_REVERSE, 1755 ATA_DITER_ALL, 1756 ATA_DITER_ALL_REVERSE, 1757 }; 1758 1759 extern struct ata_link *ata_link_next(struct ata_link *link, 1760 struct ata_port *ap, 1761 enum ata_link_iter_mode mode); 1762 1763 extern struct ata_device *ata_dev_next(struct ata_device *dev, 1764 struct ata_link *link, 1765 enum ata_dev_iter_mode mode); 1766 1767 /* 1768 * Shortcut notation for iterations 1769 * 1770 * ata_for_each_link() iterates over each link of @ap according to 1771 * @mode. @link points to the current link in the loop. @link is 1772 * NULL after loop termination. ata_for_each_dev() works the same way 1773 * except that it iterates over each device of @link. 1774 * 1775 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be 1776 * specified when using the following shorthand notations. Only the 1777 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be 1778 * specified. This not only increases brevity but also makes it 1779 * impossible to use ATA_LITER_* for device iteration or vice-versa. 1780 */ 1781 #define ata_for_each_link(link, ap, mode) \ 1782 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \ 1783 (link) = ata_link_next((link), (ap), ATA_LITER_##mode)) 1784 1785 #define ata_for_each_dev(dev, link, mode) \ 1786 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \ 1787 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode)) 1788 1789 /** 1790 * ata_ncq_supported - Test whether NCQ is supported 1791 * @dev: ATA device to test 1792 * 1793 * LOCKING: 1794 * spin_lock_irqsave(host lock) 1795 * 1796 * RETURNS: 1797 * true if @dev supports NCQ, false otherwise. 1798 */ 1799 static inline bool ata_ncq_supported(struct ata_device *dev) 1800 { 1801 if (!IS_ENABLED(CONFIG_SATA_HOST)) 1802 return false; 1803 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; 1804 } 1805 1806 /** 1807 * ata_ncq_enabled - Test whether NCQ is enabled 1808 * @dev: ATA device to test 1809 * 1810 * LOCKING: 1811 * spin_lock_irqsave(host lock) 1812 * 1813 * RETURNS: 1814 * true if NCQ is enabled for @dev, false otherwise. 1815 */ 1816 static inline bool ata_ncq_enabled(struct ata_device *dev) 1817 { 1818 return ata_ncq_supported(dev) && !(dev->flags & ATA_DFLAG_NCQ_OFF); 1819 } 1820 1821 static inline bool ata_fpdma_dsm_supported(struct ata_device *dev) 1822 { 1823 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1824 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] & 1825 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM); 1826 } 1827 1828 static inline bool ata_fpdma_read_log_supported(struct ata_device *dev) 1829 { 1830 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1831 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET] & 1832 ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED); 1833 } 1834 1835 static inline bool ata_fpdma_zac_mgmt_in_supported(struct ata_device *dev) 1836 { 1837 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1838 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET] & 1839 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED); 1840 } 1841 1842 static inline bool ata_fpdma_zac_mgmt_out_supported(struct ata_device *dev) 1843 { 1844 return (dev->ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET] & 1845 ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT); 1846 } 1847 1848 static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) 1849 { 1850 qc->tf.ctl |= ATA_NIEN; 1851 } 1852 1853 static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, 1854 unsigned int tag) 1855 { 1856 if (ata_tag_valid(tag)) 1857 return &ap->qcmd[tag]; 1858 return NULL; 1859 } 1860 1861 static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, 1862 unsigned int tag) 1863 { 1864 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); 1865 1866 if (unlikely(!qc)) 1867 return qc; 1868 1869 if ((qc->flags & (ATA_QCFLAG_ACTIVE | 1870 ATA_QCFLAG_EH)) == ATA_QCFLAG_ACTIVE) 1871 return qc; 1872 1873 return NULL; 1874 } 1875 1876 static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc) 1877 { 1878 return qc->nbytes - min(qc->extrabytes, qc->nbytes); 1879 } 1880 1881 static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) 1882 { 1883 memset(tf, 0, sizeof(*tf)); 1884 1885 #ifdef CONFIG_ATA_SFF 1886 tf->ctl = dev->link->ap->ctl; 1887 #else 1888 tf->ctl = ATA_DEVCTL_OBS; 1889 #endif 1890 if (dev->devno == 0) 1891 tf->device = ATA_DEVICE_OBS; 1892 else 1893 tf->device = ATA_DEVICE_OBS | ATA_DEV1; 1894 } 1895 1896 static inline void ata_qc_reinit(struct ata_queued_cmd *qc) 1897 { 1898 qc->dma_dir = DMA_NONE; 1899 qc->sg = NULL; 1900 qc->flags = 0; 1901 qc->cursg = NULL; 1902 qc->cursg_ofs = 0; 1903 qc->nbytes = qc->extrabytes = qc->curbytes = 0; 1904 qc->n_elem = 0; 1905 qc->err_mask = 0; 1906 qc->sect_size = ATA_SECT_SIZE; 1907 1908 ata_tf_init(qc->dev, &qc->tf); 1909 1910 /* init result_tf such that it indicates normal completion */ 1911 qc->result_tf.command = ATA_DRDY; 1912 qc->result_tf.feature = 0; 1913 } 1914 1915 static inline int ata_try_flush_cache(const struct ata_device *dev) 1916 { 1917 return ata_id_wcache_enabled(dev->id) || 1918 ata_id_has_flush(dev->id) || 1919 ata_id_has_flush_ext(dev->id); 1920 } 1921 1922 static inline unsigned int ac_err_mask(u8 status) 1923 { 1924 if (status & (ATA_BUSY | ATA_DRQ)) 1925 return AC_ERR_HSM; 1926 if (status & (ATA_ERR | ATA_DF)) 1927 return AC_ERR_DEV; 1928 return 0; 1929 } 1930 1931 static inline unsigned int __ac_err_mask(u8 status) 1932 { 1933 unsigned int mask = ac_err_mask(status); 1934 if (mask == 0) 1935 return AC_ERR_OTHER; 1936 return mask; 1937 } 1938 1939 static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) 1940 { 1941 return *(struct ata_port **)&host->hostdata[0]; 1942 } 1943 1944 static inline int ata_check_ready(u8 status) 1945 { 1946 if (!(status & ATA_BUSY)) 1947 return 1; 1948 1949 /* 0xff indicates either no device or device not ready */ 1950 if (status == 0xff) 1951 return -ENODEV; 1952 1953 return 0; 1954 } 1955 1956 static inline unsigned long ata_deadline(unsigned long from_jiffies, 1957 unsigned int timeout_msecs) 1958 { 1959 return from_jiffies + msecs_to_jiffies(timeout_msecs); 1960 } 1961 1962 /* Don't open code these in drivers as there are traps. Firstly the range may 1963 change in future hardware and specs, secondly 0xFF means 'no DMA' but is 1964 > UDMA_0. Dyma ddreigiau */ 1965 1966 static inline bool ata_using_mwdma(struct ata_device *adev) 1967 { 1968 return adev->dma_mode >= XFER_MW_DMA_0 && 1969 adev->dma_mode <= XFER_MW_DMA_4; 1970 } 1971 1972 static inline bool ata_using_udma(struct ata_device *adev) 1973 { 1974 return adev->dma_mode >= XFER_UDMA_0 && 1975 adev->dma_mode <= XFER_UDMA_7; 1976 } 1977 1978 static inline bool ata_dma_enabled(struct ata_device *adev) 1979 { 1980 return adev->dma_mode != 0xFF; 1981 } 1982 1983 /************************************************************************** 1984 * PATA timings - drivers/ata/libata-pata-timings.c 1985 */ 1986 extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); 1987 extern int ata_timing_compute(struct ata_device *, unsigned short, 1988 struct ata_timing *, int, int); 1989 extern void ata_timing_merge(const struct ata_timing *, 1990 const struct ata_timing *, struct ata_timing *, 1991 unsigned int); 1992 1993 /************************************************************************** 1994 * PMP - drivers/ata/libata-pmp.c 1995 */ 1996 #ifdef CONFIG_SATA_PMP 1997 1998 extern const struct ata_port_operations sata_pmp_port_ops; 1999 2000 extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); 2001 extern void sata_pmp_error_handler(struct ata_port *ap); 2002 2003 #else /* CONFIG_SATA_PMP */ 2004 2005 #define sata_pmp_port_ops sata_port_ops 2006 #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer 2007 #define sata_pmp_error_handler ata_std_error_handler 2008 2009 #endif /* CONFIG_SATA_PMP */ 2010 2011 2012 /************************************************************************** 2013 * SFF - drivers/ata/libata-sff.c 2014 */ 2015 #ifdef CONFIG_ATA_SFF 2016 2017 extern const struct ata_port_operations ata_sff_port_ops; 2018 extern const struct ata_port_operations ata_bmdma32_port_ops; 2019 2020 /* PIO only, sg_tablesize and dma_boundary limits can be removed */ 2021 #define ATA_PIO_SHT(drv_name) \ 2022 ATA_BASE_SHT(drv_name), \ 2023 .sg_tablesize = LIBATA_MAX_PRD, \ 2024 .dma_boundary = ATA_DMA_BOUNDARY 2025 2026 extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); 2027 extern u8 ata_sff_check_status(struct ata_port *ap); 2028 extern void ata_sff_pause(struct ata_port *ap); 2029 extern void ata_sff_dma_pause(struct ata_port *ap); 2030 extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline); 2031 extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); 2032 extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf); 2033 extern void ata_sff_exec_command(struct ata_port *ap, 2034 const struct ata_taskfile *tf); 2035 extern unsigned int ata_sff_data_xfer(struct ata_queued_cmd *qc, 2036 unsigned char *buf, unsigned int buflen, int rw); 2037 extern unsigned int ata_sff_data_xfer32(struct ata_queued_cmd *qc, 2038 unsigned char *buf, unsigned int buflen, int rw); 2039 extern void ata_sff_irq_on(struct ata_port *ap); 2040 extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, 2041 u8 status, int in_wq); 2042 extern void ata_sff_queue_work(struct work_struct *work); 2043 extern void ata_sff_queue_delayed_work(struct delayed_work *dwork, 2044 unsigned long delay); 2045 extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay); 2046 extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); 2047 extern void ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); 2048 extern unsigned int ata_sff_port_intr(struct ata_port *ap, 2049 struct ata_queued_cmd *qc); 2050 extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); 2051 extern void ata_sff_lost_interrupt(struct ata_port *ap); 2052 extern void ata_sff_freeze(struct ata_port *ap); 2053 extern void ata_sff_thaw(struct ata_port *ap); 2054 extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline); 2055 extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, 2056 u8 *r_err); 2057 extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask, 2058 unsigned long deadline); 2059 extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes, 2060 unsigned long deadline); 2061 extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class, 2062 unsigned long deadline); 2063 extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes); 2064 extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc); 2065 extern void ata_sff_error_handler(struct ata_port *ap); 2066 extern void ata_sff_std_ports(struct ata_ioports *ioaddr); 2067 #ifdef CONFIG_PCI 2068 extern int ata_pci_sff_init_host(struct ata_host *host); 2069 extern int ata_pci_sff_prepare_host(struct pci_dev *pdev, 2070 const struct ata_port_info * const * ppi, 2071 struct ata_host **r_host); 2072 extern int ata_pci_sff_activate_host(struct ata_host *host, 2073 irq_handler_t irq_handler, 2074 const struct scsi_host_template *sht); 2075 extern int ata_pci_sff_init_one(struct pci_dev *pdev, 2076 const struct ata_port_info * const * ppi, 2077 const struct scsi_host_template *sht, void *host_priv, int hflags); 2078 #endif /* CONFIG_PCI */ 2079 2080 #ifdef CONFIG_ATA_BMDMA 2081 2082 extern const struct ata_port_operations ata_bmdma_port_ops; 2083 2084 #define ATA_BMDMA_SHT(drv_name) \ 2085 ATA_BASE_SHT(drv_name), \ 2086 .sg_tablesize = LIBATA_MAX_PRD, \ 2087 .dma_boundary = ATA_DMA_BOUNDARY 2088 2089 extern enum ata_completion_errors ata_bmdma_qc_prep(struct ata_queued_cmd *qc); 2090 extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc); 2091 extern enum ata_completion_errors ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc); 2092 extern unsigned int ata_bmdma_port_intr(struct ata_port *ap, 2093 struct ata_queued_cmd *qc); 2094 extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance); 2095 extern void ata_bmdma_error_handler(struct ata_port *ap); 2096 extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc); 2097 extern void ata_bmdma_irq_clear(struct ata_port *ap); 2098 extern void ata_bmdma_setup(struct ata_queued_cmd *qc); 2099 extern void ata_bmdma_start(struct ata_queued_cmd *qc); 2100 extern void ata_bmdma_stop(struct ata_queued_cmd *qc); 2101 extern u8 ata_bmdma_status(struct ata_port *ap); 2102 extern int ata_bmdma_port_start(struct ata_port *ap); 2103 extern int ata_bmdma_port_start32(struct ata_port *ap); 2104 2105 #ifdef CONFIG_PCI 2106 extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); 2107 extern void ata_pci_bmdma_init(struct ata_host *host); 2108 extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev, 2109 const struct ata_port_info * const * ppi, 2110 struct ata_host **r_host); 2111 extern int ata_pci_bmdma_init_one(struct pci_dev *pdev, 2112 const struct ata_port_info * const * ppi, 2113 const struct scsi_host_template *sht, 2114 void *host_priv, int hflags); 2115 #endif /* CONFIG_PCI */ 2116 #endif /* CONFIG_ATA_BMDMA */ 2117 2118 /** 2119 * ata_sff_busy_wait - Wait for a port status register 2120 * @ap: Port to wait for. 2121 * @bits: bits that must be clear 2122 * @max: number of 10uS waits to perform 2123 * 2124 * Waits up to max*10 microseconds for the selected bits in the port's 2125 * status register to be cleared. 2126 * Returns final value of status register. 2127 * 2128 * LOCKING: 2129 * Inherited from caller. 2130 */ 2131 static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits, 2132 unsigned int max) 2133 { 2134 u8 status; 2135 2136 do { 2137 udelay(10); 2138 status = ap->ops->sff_check_status(ap); 2139 max--; 2140 } while (status != 0xff && (status & bits) && (max > 0)); 2141 2142 return status; 2143 } 2144 2145 /** 2146 * ata_wait_idle - Wait for a port to be idle. 2147 * @ap: Port to wait for. 2148 * 2149 * Waits up to 10ms for port's BUSY and DRQ signals to clear. 2150 * Returns final value of status register. 2151 * 2152 * LOCKING: 2153 * Inherited from caller. 2154 */ 2155 static inline u8 ata_wait_idle(struct ata_port *ap) 2156 { 2157 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); 2158 2159 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) 2160 ata_port_dbg(ap, "abnormal Status 0x%X\n", status); 2161 2162 return status; 2163 } 2164 #else /* CONFIG_ATA_SFF */ 2165 static inline int sata_sff_hardreset(struct ata_link *link, unsigned int *class, 2166 unsigned long deadline) 2167 { 2168 return -EOPNOTSUPP; 2169 } 2170 #endif /* CONFIG_ATA_SFF */ 2171 2172 #endif /* __LINUX_LIBATA_H__ */ 2173