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libata.h
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linux-6.19.14/include/linux/libata.h
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 unsigned int, so __ATA_QUIRK_MAX must not exceed 32. 50 */ 51enum 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_MAX_SEC_128, /* Limit max sects to 128 */ 56 __ATA_QUIRK_BROKEN_HPA, /* Broken HPA */ 57 __ATA_QUIRK_DISABLE, /* Disable it */ 58 __ATA_QUIRK_HPA_SIZE, /* Native size off by one */ 59 __ATA_QUIRK_IVB, /* cbl det validity bit bugs */ 60 __ATA_QUIRK_STUCK_ERR, /* Stuck ERR on next PACKET */ 61 __ATA_QUIRK_BRIDGE_OK, /* No bridge limits */ 62 __ATA_QUIRK_ATAPI_MOD16_DMA, /* Use ATAPI DMA for commands that */ 63 /* are not a multiple of 16 bytes */ 64 __ATA_QUIRK_FIRMWARE_WARN, /* Firmware update warning */ 65 __ATA_QUIRK_1_5_GBPS, /* Force 1.5 Gbps */ 66 __ATA_QUIRK_NOSETXFER, /* Skip SETXFER, SATA only */ 67 __ATA_QUIRK_BROKEN_FPDMA_AA, /* Skip AA */ 68 __ATA_QUIRK_DUMP_ID, /* Dump IDENTIFY data */ 69 __ATA_QUIRK_MAX_SEC_LBA48, /* Set max sects to 65535 */ 70 __ATA_QUIRK_ATAPI_DMADIR, /* Device requires dmadir */ 71 __ATA_QUIRK_NO_NCQ_TRIM, /* Do not use queued TRIM */ 72 __ATA_QUIRK_NOLPM, /* Do not use LPM */ 73 __ATA_QUIRK_WD_BROKEN_LPM, /* Some WDs have broken LPM */ 74 __ATA_QUIRK_ZERO_AFTER_TRIM, /* Guarantees zero after trim */ 75 __ATA_QUIRK_NO_DMA_LOG, /* Do not use DMA for log read */ 76 __ATA_QUIRK_NOTRIM, /* Do not use TRIM */ 77 __ATA_QUIRK_MAX_SEC_1024, /* Limit max sects to 1024 */ 78 __ATA_QUIRK_MAX_SEC, /* Limit max sectors */ 79 __ATA_QUIRK_MAX_TRIM_128M, /* Limit max trim size to 128M */ 80 __ATA_QUIRK_NO_NCQ_ON_ATI, /* Disable NCQ on ATI chipset */ 81 __ATA_QUIRK_NO_LPM_ON_ATI, /* Disable LPM on ATI chipset */ 82 __ATA_QUIRK_NO_ID_DEV_LOG, /* Identify device log missing */ 83 __ATA_QUIRK_NO_LOG_DIR, /* Do not read log directory */ 84 __ATA_QUIRK_NO_FUA, /* Do not use FUA */ 85 86 __ATA_QUIRK_MAX, 87}; 88 89/* 90 * Quirk flags: may be set by libata or controller drivers on drives. 91 * Some quirks may be drive/controller pair dependent. 92 */ 93enum { 94 ATA_QUIRK_DIAGNOSTIC = (1U << __ATA_QUIRK_DIAGNOSTIC), 95 ATA_QUIRK_NODMA = (1U << __ATA_QUIRK_NODMA), 96 ATA_QUIRK_NONCQ = (1U << __ATA_QUIRK_NONCQ), 97 ATA_QUIRK_MAX_SEC_128 = (1U << __ATA_QUIRK_MAX_SEC_128), 98 ATA_QUIRK_BROKEN_HPA = (1U << __ATA_QUIRK_BROKEN_HPA), 99 ATA_QUIRK_DISABLE = (1U << __ATA_QUIRK_DISABLE), 100 ATA_QUIRK_HPA_SIZE = (1U << __ATA_QUIRK_HPA_SIZE), 101 ATA_QUIRK_IVB = (1U << __ATA_QUIRK_IVB), 102 ATA_QUIRK_STUCK_ERR = (1U << __ATA_QUIRK_STUCK_ERR), 103 ATA_QUIRK_BRIDGE_OK = (1U << __ATA_QUIRK_BRIDGE_OK), 104 ATA_QUIRK_ATAPI_MOD16_DMA = (1U << __ATA_QUIRK_ATAPI_MOD16_DMA), 105 ATA_QUIRK_FIRMWARE_WARN = (1U << __ATA_QUIRK_FIRMWARE_WARN), 106 ATA_QUIRK_1_5_GBPS = (1U << __ATA_QUIRK_1_5_GBPS), 107 ATA_QUIRK_NOSETXFER = (1U << __ATA_QUIRK_NOSETXFER), 108 ATA_QUIRK_BROKEN_FPDMA_AA = (1U << __ATA_QUIRK_BROKEN_FPDMA_AA), 109 ATA_QUIRK_DUMP_ID = (1U << __ATA_QUIRK_DUMP_ID), 110 ATA_QUIRK_MAX_SEC_LBA48 = (1U << __ATA_QUIRK_MAX_SEC_LBA48), 111 ATA_QUIRK_ATAPI_DMADIR = (1U << __ATA_QUIRK_ATAPI_DMADIR), 112 ATA_QUIRK_NO_NCQ_TRIM = (1U << __ATA_QUIRK_NO_NCQ_TRIM), 113 ATA_QUIRK_NOLPM = (1U << __ATA_QUIRK_NOLPM), 114 ATA_QUIRK_WD_BROKEN_LPM = (1U << __ATA_QUIRK_WD_BROKEN_LPM), 115 ATA_QUIRK_ZERO_AFTER_TRIM = (1U << __ATA_QUIRK_ZERO_AFTER_TRIM), 116 ATA_QUIRK_NO_DMA_LOG = (1U << __ATA_QUIRK_NO_DMA_LOG), 117 ATA_QUIRK_NOTRIM = (1U << __ATA_QUIRK_NOTRIM), 118 ATA_QUIRK_MAX_SEC_1024 = (1U << __ATA_QUIRK_MAX_SEC_1024), 119 ATA_QUIRK_MAX_SEC = (1U << __ATA_QUIRK_MAX_SEC), 120 ATA_QUIRK_MAX_TRIM_128M = (1U << __ATA_QUIRK_MAX_TRIM_128M), 121 ATA_QUIRK_NO_NCQ_ON_ATI = (1U << __ATA_QUIRK_NO_NCQ_ON_ATI), 122 ATA_QUIRK_NO_LPM_ON_ATI = (1U << __ATA_QUIRK_NO_LPM_ON_ATI), 123 ATA_QUIRK_NO_ID_DEV_LOG = (1U << __ATA_QUIRK_NO_ID_DEV_LOG), 124 ATA_QUIRK_NO_LOG_DIR = (1U << __ATA_QUIRK_NO_LOG_DIR), 125 ATA_QUIRK_NO_FUA = (1U << __ATA_QUIRK_NO_FUA), 126}; 127 128enum { 129 /* various global constants */ 130 LIBATA_MAX_PRD = ATA_MAX_PRD / 2, 131 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */ 132 ATA_DEF_QUEUE = 1, 133 ATA_MAX_QUEUE = 32, 134 ATA_TAG_INTERNAL = ATA_MAX_QUEUE, 135 ATA_SHORT_PAUSE = 16, 136 137 ATAPI_MAX_DRAIN = 16 << 10, 138 139 ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1, 140 141 ATA_SHT_EMULATED = 1, 142 ATA_SHT_THIS_ID = -1, 143 144 /* struct ata_taskfile flags */ 145 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */ 146 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */ 147 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */ 148 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */ 149 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */ 150 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */ 151 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */ 152 153 /* struct ata_device stuff */ 154 ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */ 155 ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */ 156 ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */ 157 ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */ 158 ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */ 159 ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ 160 ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ 161 ATA_DFLAG_AN = (1 << 7), /* AN configured */ 162 ATA_DFLAG_TRUSTED = (1 << 8), /* device supports trusted send/recv */ 163 ATA_DFLAG_FUA = (1 << 9), /* device supports FUA */ 164 ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */ 165 ATA_DFLAG_NCQ_SEND_RECV = (1 << 11), /* device supports NCQ SEND and RECV */ 166 ATA_DFLAG_NCQ_PRIO = (1 << 12), /* device supports NCQ priority */ 167 ATA_DFLAG_CDL = (1 << 13), /* supports cmd duration limits */ 168 ATA_DFLAG_CFG_MASK = (1 << 14) - 1, 169 170 ATA_DFLAG_PIO = (1 << 14), /* device limited to PIO mode */ 171 ATA_DFLAG_NCQ_OFF = (1 << 15), /* device limited to non-NCQ mode */ 172 ATA_DFLAG_SLEEPING = (1 << 16), /* device is sleeping */ 173 ATA_DFLAG_DUBIOUS_XFER = (1 << 17), /* data transfer not verified */ 174 ATA_DFLAG_NO_UNLOAD = (1 << 18), /* device doesn't support unload */ 175 ATA_DFLAG_UNLOCK_HPA = (1 << 19), /* unlock HPA */ 176 ATA_DFLAG_INIT_MASK = (1 << 20) - 1, 177 178 ATA_DFLAG_NCQ_PRIO_ENABLED = (1 << 20), /* Priority cmds sent to dev */ 179 ATA_DFLAG_CDL_ENABLED = (1 << 21), /* cmd duration limits is enabled */ 180 ATA_DFLAG_RESUMING = (1 << 22), /* Device is resuming */ 181 ATA_DFLAG_DETACH = (1 << 24), 182 ATA_DFLAG_DETACHED = (1 << 25), 183 ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */ 184 ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */ 185 ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */ 186 ATA_DFLAG_D_SENSE = (1 << 29), /* Descriptor sense requested */ 187 188 ATA_DFLAG_FEATURES_MASK = (ATA_DFLAG_TRUSTED | ATA_DFLAG_DA | \ 189 ATA_DFLAG_DEVSLP | ATA_DFLAG_NCQ_SEND_RECV | \ 190 ATA_DFLAG_NCQ_PRIO | ATA_DFLAG_FUA | \ 191 ATA_DFLAG_CDL), 192 193 ATA_DEV_UNKNOWN = 0, /* unknown device */ 194 ATA_DEV_ATA = 1, /* ATA device */ 195 ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ 196 ATA_DEV_ATAPI = 3, /* ATAPI device */ 197 ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ 198 ATA_DEV_PMP = 5, /* SATA port multiplier */ 199 ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ 200 ATA_DEV_SEMB = 7, /* SEMB */ 201 ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ 202 ATA_DEV_ZAC = 9, /* ZAC device */ 203 ATA_DEV_ZAC_UNSUP = 10, /* ZAC device (unsupported) */ 204 ATA_DEV_NONE = 11, /* no device */ 205 206 /* struct ata_link flags */ 207 /* NOTE: struct ata_force_param currently stores lflags in u16 */ 208 ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */ 209 ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ 210 ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ 211 ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ 212 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, 213 ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ 214 ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ 215 ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */ 216 ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */ 217 ATA_LFLAG_RST_ONCE = (1 << 9), /* limit recovery to one reset */ 218 ATA_LFLAG_CHANGED = (1 << 10), /* LPM state changed on this link */ 219 ATA_LFLAG_NO_DEBOUNCE_DELAY = (1 << 11), /* no debounce delay on link resume */ 220 221 /* struct ata_port flags */ 222 ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ 223 /* (doesn't imply presence) */ 224 ATA_FLAG_SATA = (1 << 1), 225 ATA_FLAG_NO_LPM = (1 << 2), /* host not happy with LPM */ 226 ATA_FLAG_NO_LOG_PAGE = (1 << 5), /* do not issue log page read */ 227 ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ 228 ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ 229 ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ 230 ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD 231 * doesn't handle PIO interrupts */ 232 ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ 233 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */ 234 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */ 235 ATA_FLAG_DEBUGMSG = (1 << 13), 236 ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */ 237 ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ 238 ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ 239 ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ 240 ATA_FLAG_AN = (1 << 18), /* controller supports AN */ 241 ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ 242 ATA_FLAG_FPDMA_AUX = (1 << 20), /* controller supports H2DFIS aux field */ 243 ATA_FLAG_EM = (1 << 21), /* driver supports enclosure 244 * management */ 245 ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity 246 * led */ 247 ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */ 248 ATA_FLAG_SAS_HOST = (1 << 24), /* SAS host */ 249 250 /* bits 24:31 of ap->flags are reserved for LLD specific flags */ 251 252 253 /* struct ata_port pflags */ 254 ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ 255 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ 256 ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ 257 ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ 258 ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ 259 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ 260 ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ 261 ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ 262 ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */ 263 ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */ 264 265 ATA_PFLAG_RESUMING = (1 << 16), /* port is being resumed */ 266 ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ 267 ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ 268 ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */ 269 270 ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */ 271 ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */ 272 ATA_PFLAG_EXTERNAL = (1 << 22), /* eSATA/external port */ 273 274 /* struct ata_queued_cmd flags */ 275 ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ 276 ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */ 277 ATA_QCFLAG_RTF_FILLED = (1 << 2), /* result TF has been filled */ 278 ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ 279 ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ 280 ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ 281 ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */ 282 ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */ 283 ATA_QCFLAG_HAS_CDL = (1 << 8), /* qc has CDL a descriptor set */ 284 285 ATA_QCFLAG_EH = (1 << 16), /* cmd aborted and owned by EH */ 286 ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ 287 ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ 288 ATA_QCFLAG_EH_SUCCESS_CMD = (1 << 19), /* EH should fetch sense for this successful cmd */ 289 290 /* host set flags */ 291 ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ 292 ATA_HOST_STARTED = (1 << 1), /* Host started */ 293 ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */ 294 ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */ 295 296 ATA_HOST_NO_PART = (1 << 4), /* Host does not support partial */ 297 ATA_HOST_NO_SSC = (1 << 5), /* Host does not support slumber */ 298 ATA_HOST_NO_DEVSLP = (1 << 6), /* Host does not support devslp */ 299 300 /* bits 24:31 of host->flags are reserved for LLD specific flags */ 301 302 /* Various lengths of time */ 303 ATA_TMOUT_INTERNAL_QUICK = 5000, 304 ATA_TMOUT_MAX_PARK = 30000, 305 306 /* 307 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s 308 * is too much without parallel probing. Use 2s if parallel 309 * probing is available, 800ms otherwise. 310 */ 311 ATA_TMOUT_FF_WAIT_LONG = 2000, 312 ATA_TMOUT_FF_WAIT = 800, 313 314 /* Spec mandates to wait for ">= 2ms" before checking status 315 * after reset. We wait 150ms, because that was the magic 316 * delay used for ATAPI devices in Hale Landis's ATADRVR, for 317 * the period of time between when the ATA command register is 318 * written, and then status is checked. Because waiting for 319 * "a while" before checking status is fine, post SRST, we 320 * perform this magic delay here as well. 321 * 322 * Old drivers/ide uses the 2mS rule and then waits for ready. 323 */ 324 ATA_WAIT_AFTER_RESET = 150, 325 326 /* If PMP is supported, we have to do follow-up SRST. As some 327 * PMPs don't send D2H Reg FIS after hardreset, LLDs are 328 * advised to wait only for the following duration before 329 * doing SRST. 330 */ 331 ATA_TMOUT_PMP_SRST_WAIT = 10000, 332 333 /* When the LPM policy is set to ATA_LPM_MAX_POWER, there might 334 * be a spurious PHY event, so ignore the first PHY event that 335 * occurs within 10s after the policy change. 336 */ 337 ATA_TMOUT_SPURIOUS_PHY = 10000, 338 339 /* ATA bus states */ 340 BUS_UNKNOWN = 0, 341 BUS_DMA = 1, 342 BUS_IDLE = 2, 343 BUS_NOINTR = 3, 344 BUS_NODATA = 4, 345 BUS_TIMER = 5, 346 BUS_PIO = 6, 347 BUS_EDD = 7, 348 BUS_IDENTIFY = 8, 349 BUS_PACKET = 9, 350 351 /* SATA port states */ 352 PORT_UNKNOWN = 0, 353 PORT_ENABLED = 1, 354 PORT_DISABLED = 2, 355 356 /* encoding various smaller bitmaps into a single 357 * unsigned int bitmap 358 */ 359 ATA_NR_PIO_MODES = 7, 360 ATA_NR_MWDMA_MODES = 5, 361 ATA_NR_UDMA_MODES = 8, 362 363 ATA_SHIFT_PIO = 0, 364 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES, 365 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES, 366 ATA_SHIFT_PRIO = 6, 367 368 ATA_PRIO_HIGH = 2, 369 /* size of buffer to pad xfers ending on unaligned boundaries */ 370 ATA_DMA_PAD_SZ = 4, 371 372 /* ering size */ 373 ATA_ERING_SIZE = 32, 374 375 /* return values for ->qc_defer */ 376 ATA_DEFER_LINK = 1, 377 ATA_DEFER_PORT = 2, 378 379 /* desc_len for ata_eh_info and context */ 380 ATA_EH_DESC_LEN = 80, 381 382 /* reset / recovery action types */ 383 ATA_EH_REVALIDATE = (1 << 0), 384 ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */ 385 ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */ 386 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, 387 ATA_EH_ENABLE_LINK = (1 << 3), 388 ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */ 389 ATA_EH_GET_SUCCESS_SENSE = (1 << 6), /* Get sense data for successful cmd */ 390 ATA_EH_SET_ACTIVE = (1 << 7), /* Set a device to active power mode */ 391 392 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK | 393 ATA_EH_GET_SUCCESS_SENSE | ATA_EH_SET_ACTIVE, 394 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET | 395 ATA_EH_ENABLE_LINK, 396 397 /* ata_eh_info->flags */ 398 ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ 399 ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ 400 ATA_EHI_QUIET = (1 << 3), /* be quiet */ 401 ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */ 402 403 ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ 404 ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ 405 ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ 406 ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ 407 ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */ 408 ATA_EHI_DID_PRINT_QUIRKS = (1 << 21), /* already printed quirks info */ 409 410 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, 411 412 /* mask of flags to transfer *to* the slave link */ 413 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, 414 415 /* max tries if error condition is still set after ->error_handler */ 416 ATA_EH_MAX_TRIES = 5, 417 418 /* sometimes resuming a link requires several retries */ 419 ATA_LINK_RESUME_TRIES = 5, 420 421 /* how hard are we gonna try to probe/recover devices */ 422 ATA_EH_DEV_TRIES = 3, 423 ATA_EH_PMP_TRIES = 5, 424 ATA_EH_PMP_LINK_TRIES = 3, 425 426 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */ 427 428 /* This should match the actual table size of 429 * ata_eh_cmd_timeout_table in libata-eh.c. 430 */ 431 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 8, 432 433 /* User visible DMA mask for DMA control. DO NOT renumber. */ 434 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ 435 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ 436 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ 437 438 /* ATAPI command types */ 439 ATAPI_READ = 0, /* READs */ 440 ATAPI_WRITE = 1, /* WRITEs */ 441 ATAPI_READ_CD = 2, /* READ CD [MSF] */ 442 ATAPI_PASS_THRU = 3, /* SAT pass-thru */ 443 ATAPI_MISC = 4, /* the rest */ 444 445 /* Timing constants */ 446 ATA_TIMING_SETUP = (1 << 0), 447 ATA_TIMING_ACT8B = (1 << 1), 448 ATA_TIMING_REC8B = (1 << 2), 449 ATA_TIMING_CYC8B = (1 << 3), 450 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | 451 ATA_TIMING_CYC8B, 452 ATA_TIMING_ACTIVE = (1 << 4), 453 ATA_TIMING_RECOVER = (1 << 5), 454 ATA_TIMING_DMACK_HOLD = (1 << 6), 455 ATA_TIMING_CYCLE = (1 << 7), 456 ATA_TIMING_UDMA = (1 << 8), 457 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | 458 ATA_TIMING_REC8B | ATA_TIMING_CYC8B | 459 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | 460 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE | 461 ATA_TIMING_UDMA, 462 463 /* ACPI constants */ 464 ATA_ACPI_FILTER_SETXFER = 1 << 0, 465 ATA_ACPI_FILTER_LOCK = 1 << 1, 466 ATA_ACPI_FILTER_DIPM = 1 << 2, 467 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */ 468 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */ 469 470 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER | 471 ATA_ACPI_FILTER_LOCK | 472 ATA_ACPI_FILTER_DIPM, 473}; 474 475enum ata_xfer_mask { 476 ATA_MASK_PIO = ((1U << ATA_NR_PIO_MODES) - 1) << ATA_SHIFT_PIO, 477 ATA_MASK_MWDMA = ((1U << ATA_NR_MWDMA_MODES) - 1) << ATA_SHIFT_MWDMA, 478 ATA_MASK_UDMA = ((1U << ATA_NR_UDMA_MODES) - 1) << ATA_SHIFT_UDMA, 479}; 480 481enum hsm_task_states { 482 HSM_ST_IDLE, /* no command on going */ 483 HSM_ST_FIRST, /* (waiting the device to) 484 write CDB or first data block */ 485 HSM_ST, /* (waiting the device to) transfer data */ 486 HSM_ST_LAST, /* (waiting the device to) complete command */ 487 HSM_ST_ERR, /* error */ 488}; 489 490enum ata_completion_errors { 491 AC_ERR_OK = 0, /* no error */ 492 AC_ERR_DEV = (1 << 0), /* device reported error */ 493 AC_ERR_HSM = (1 << 1), /* host state machine violation */ 494 AC_ERR_TIMEOUT = (1 << 2), /* timeout */ 495 AC_ERR_MEDIA = (1 << 3), /* media error */ 496 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ 497 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ 498 AC_ERR_SYSTEM = (1 << 6), /* system error */ 499 AC_ERR_INVALID = (1 << 7), /* invalid argument */ 500 AC_ERR_OTHER = (1 << 8), /* unknown */ 501 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ 502 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ 503}; 504 505/* 506 * Link Power Management (LPM) policies. 507 * 508 * The default LPM policy to use for a device link is defined using these values 509 * with the CONFIG_SATA_MOBILE_LPM_POLICY config option and applied through the 510 * target_lpm_policy field of struct ata_port. 511 * 512 * If you alter this, you also need to alter the policy names used with the 513 * sysfs attribute link_power_management_policy defined in libata-sata.c. 514 */ 515enum ata_lpm_policy { 516 /* Keep firmware settings */ 517 ATA_LPM_UNKNOWN, 518 /* No power savings (maximum performance) */ 519 ATA_LPM_MAX_POWER, 520 /* HIPM (Partial) */ 521 ATA_LPM_MED_POWER, 522 /* HIPM (Partial) and DIPM (Partial and Slumber) */ 523 ATA_LPM_MED_POWER_WITH_DIPM, 524 /* HIPM (Partial and DevSleep) and DIPM (Partial and Slumber) */ 525 ATA_LPM_MIN_POWER_WITH_PARTIAL, 526 /* HIPM (Slumber and DevSleep) and DIPM (Partial and Slumber) */ 527 ATA_LPM_MIN_POWER, 528}; 529 530enum ata_lpm_hints { 531 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */ 532 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */ 533 ATA_LPM_WAKE_ONLY = (1 << 2), /* only wake up link */ 534}; 535 536/* forward declarations */ 537struct scsi_device; 538struct ata_port_operations; 539struct ata_port; 540struct ata_link; 541struct ata_queued_cmd; 542 543/* typedefs */ 544typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); 545typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); 546typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, 547 unsigned long deadline); 548typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); 549 550extern struct device_attribute dev_attr_unload_heads; 551#ifdef CONFIG_SATA_HOST 552extern struct device_attribute dev_attr_link_power_management_supported; 553extern struct device_attribute dev_attr_link_power_management_policy; 554extern struct device_attribute dev_attr_ncq_prio_supported; 555extern struct device_attribute dev_attr_ncq_prio_enable; 556extern struct device_attribute dev_attr_em_message_type; 557extern struct device_attribute dev_attr_em_message; 558extern struct device_attribute dev_attr_sw_activity; 559#endif 560 561enum sw_activity { 562 OFF, 563 BLINK_ON, 564 BLINK_OFF, 565}; 566 567struct ata_taskfile { 568 unsigned long flags; /* ATA_TFLAG_xxx */ 569 u8 protocol; /* ATA_PROT_xxx */ 570 571 u8 ctl; /* control reg */ 572 573 u8 hob_feature; /* additional data */ 574 u8 hob_nsect; /* to support LBA48 */ 575 u8 hob_lbal; 576 u8 hob_lbam; 577 u8 hob_lbah; 578 579 union { 580 u8 error; 581 u8 feature; 582 }; 583 u8 nsect; 584 u8 lbal; 585 u8 lbam; 586 u8 lbah; 587 588 u8 device; 589 590 union { 591 u8 status; 592 u8 command; 593 }; 594 595 u32 auxiliary; /* auxiliary field */ 596 /* from SATA 3.1 and */ 597 /* ATA-8 ACS-3 */ 598}; 599 600#ifdef CONFIG_ATA_SFF 601struct ata_ioports { 602 void __iomem *cmd_addr; 603 void __iomem *data_addr; 604 void __iomem *error_addr; 605 void __iomem *feature_addr; 606 void __iomem *nsect_addr; 607 void __iomem *lbal_addr; 608 void __iomem *lbam_addr; 609 void __iomem *lbah_addr; 610 void __iomem *device_addr; 611 void __iomem *status_addr; 612 void __iomem *command_addr; 613 void __iomem *altstatus_addr; 614 void __iomem *ctl_addr; 615#ifdef CONFIG_ATA_BMDMA 616 void __iomem *bmdma_addr; 617#endif /* CONFIG_ATA_BMDMA */ 618 void __iomem *scr_addr; 619}; 620#endif /* CONFIG_ATA_SFF */ 621 622struct ata_host { 623 spinlock_t lock; 624 struct device *dev; 625 void __iomem * const *iomap; 626 unsigned int n_ports; 627 unsigned int n_tags; /* nr of NCQ tags */ 628 void *private_data; 629 struct ata_port_operations *ops; 630 unsigned long flags; 631 struct kref kref; 632 633 struct mutex eh_mutex; 634 struct task_struct *eh_owner; 635 636 struct ata_port *simplex_claimed; /* channel owning the DMA */ 637 struct ata_port *ports[]; 638}; 639 640struct ata_queued_cmd { 641 struct ata_port *ap; 642 struct ata_device *dev; 643 644 struct scsi_cmnd *scsicmd; 645 void (*scsidone)(struct scsi_cmnd *); 646 647 struct ata_taskfile tf; 648 u8 cdb[ATAPI_CDB_LEN]; 649 650 unsigned long flags; /* ATA_QCFLAG_xxx */ 651 unsigned int tag; /* libata core tag */ 652 unsigned int hw_tag; /* driver tag */ 653 unsigned int n_elem; 654 unsigned int orig_n_elem; 655 656 int dma_dir; 657 658 unsigned int sect_size; 659 660 unsigned int nbytes; 661 unsigned int extrabytes; 662 unsigned int curbytes; 663 664 struct scatterlist sgent; 665 666 struct scatterlist *sg; 667 668 struct scatterlist *cursg; 669 unsigned int cursg_ofs; 670 671 unsigned int err_mask; 672 struct ata_taskfile result_tf; 673 ata_qc_cb_t complete_fn; 674 675 void *private_data; 676 void *lldd_task; 677}; 678 679struct ata_port_stats { 680 unsigned long unhandled_irq; 681 unsigned long idle_irq; 682 unsigned long rw_reqbuf; 683}; 684 685struct ata_ering_entry { 686 unsigned int eflags; 687 unsigned int err_mask; 688 u64 timestamp; 689}; 690 691struct ata_ering { 692 int cursor; 693 struct ata_ering_entry ring[ATA_ERING_SIZE]; 694}; 695 696struct ata_cpr { 697 u8 num; 698 u8 num_storage_elements; 699 u64 start_lba; 700 u64 num_lbas; 701}; 702 703struct ata_cpr_log { 704 u8 nr_cpr; 705 struct ata_cpr cpr[] __counted_by(nr_cpr); 706}; 707 708struct ata_cdl { 709 /* 710 * Buffer to cache the CDL log page 18h (command duration descriptors) 711 * for SCSI-ATA translation. 712 */ 713 u8 desc_log_buf[ATA_LOG_CDL_SIZE]; 714 715 /* 716 * Buffer to handle reading the sense data for successful NCQ Commands 717 * log page for commands using a CDL with one of the limits policy set 718 * to 0xD (successful completion with sense data available bit set). 719 */ 720 u8 ncq_sense_log_buf[ATA_LOG_SENSE_NCQ_SIZE]; 721}; 722 723struct ata_device { 724 struct ata_link *link; 725 unsigned int devno; /* 0 or 1 */ 726 unsigned int quirks; /* List of broken features */ 727 unsigned long flags; /* ATA_DFLAG_xxx */ 728 struct scsi_device *sdev; /* attached SCSI device */ 729 void *private_data; 730#ifdef CONFIG_ATA_ACPI 731 union acpi_object *gtf_cache; 732 unsigned int gtf_filter; 733#endif 734#ifdef CONFIG_SATA_ZPODD 735 void *zpodd; 736#endif 737 struct device tdev; 738 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */ 739 u64 n_sectors; /* size of device, if ATA */ 740 u64 n_native_sectors; /* native size, if ATA */ 741 unsigned int class; /* ATA_DEV_xxx */ 742 unsigned long unpark_deadline; 743 744 u8 pio_mode; 745 u8 dma_mode; 746 u8 xfer_mode; 747 unsigned int xfer_shift; /* ATA_SHIFT_xxx */ 748 749 unsigned int multi_count; /* sectors count for 750 READ/WRITE MULTIPLE */ 751 unsigned int max_sectors; /* per-device max sectors */ 752 unsigned int cdb_len; 753 754 /* per-dev xfer mask */ 755 unsigned int pio_mask; 756 unsigned int mwdma_mask; 757 unsigned int udma_mask; 758 759 /* for CHS addressing */ 760 u16 cylinders; /* Number of cylinders */ 761 u16 heads; /* Number of heads */ 762 u16 sectors; /* Number of sectors per track */ 763 764 union { 765 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ 766 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ 767 } ____cacheline_aligned; 768 769 /* General Purpose Log Directory log page */ 770 u8 gp_log_dir[ATA_SECT_SIZE] ____cacheline_aligned; 771 772 /* DEVSLP Timing Variables from Identify Device Data Log */ 773 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE]; 774 775 /* NCQ send and receive log subcommand support */ 776 u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE]; 777 u8 ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_SIZE]; 778 779 /* ZAC zone configuration */ 780 u32 zac_zoned_cap; 781 u32 zac_zones_optimal_open; 782 u32 zac_zones_optimal_nonseq; 783 u32 zac_zones_max_open; 784 785 /* Concurrent positioning ranges */ 786 struct ata_cpr_log *cpr_log; 787 788 /* Command Duration Limits support */ 789 struct ata_cdl *cdl; 790 791 /* error history */ 792 int spdn_cnt; 793 /* ering is CLEAR_END, read comment above CLEAR_END */ 794 struct ata_ering ering; 795 796 /* For EH */ 797 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned; 798}; 799 800/* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are 801 * cleared to zero on ata_dev_init(). 802 */ 803#define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors) 804#define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering) 805 806struct ata_eh_info { 807 struct ata_device *dev; /* offending device */ 808 u32 serror; /* SError from LLDD */ 809 unsigned int err_mask; /* port-wide err_mask */ 810 unsigned int action; /* ATA_EH_* action mask */ 811 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ 812 unsigned int flags; /* ATA_EHI_* flags */ 813 814 unsigned int probe_mask; 815 816 char desc[ATA_EH_DESC_LEN]; 817 int desc_len; 818}; 819 820struct ata_eh_context { 821 struct ata_eh_info i; 822 int tries[ATA_MAX_DEVICES]; 823 int cmd_timeout_idx[ATA_MAX_DEVICES] 824 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE]; 825 unsigned int classes[ATA_MAX_DEVICES]; 826 unsigned int did_probe_mask; 827 unsigned int unloaded_mask; 828 unsigned int saved_ncq_enabled; 829 u8 saved_xfer_mode[ATA_MAX_DEVICES]; 830 /* timestamp for the last reset attempt or success */ 831 unsigned long last_reset; 832}; 833 834struct ata_acpi_drive 835{ 836 u32 pio; 837 u32 dma; 838} __packed; 839 840struct ata_acpi_gtm { 841 struct ata_acpi_drive drive[2]; 842 u32 flags; 843} __packed; 844 845struct ata_link { 846 struct ata_port *ap; 847 int pmp; /* port multiplier port # */ 848 849 struct device tdev; 850 unsigned int active_tag; /* active tag on this link */ 851 u32 sactive; /* active NCQ commands */ 852 853 unsigned int flags; /* ATA_LFLAG_xxx */ 854 855 u32 saved_scontrol; /* SControl on probe */ 856 unsigned int hw_sata_spd_limit; 857 unsigned int sata_spd_limit; 858 unsigned int sata_spd; /* current SATA PHY speed */ 859 enum ata_lpm_policy lpm_policy; 860 861 /* record runtime error info, protected by host_set lock */ 862 struct ata_eh_info eh_info; 863 /* EH context */ 864 struct ata_eh_context eh_context; 865 866 struct ata_device device[ATA_MAX_DEVICES]; 867 868 unsigned long last_lpm_change; /* when last LPM change happened */ 869}; 870#define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag) 871#define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0]) 872 873struct ata_port { 874 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ 875 struct ata_port_operations *ops; 876 spinlock_t *lock; 877 /* Flags owned by the EH context. Only EH should touch these once the 878 port is active */ 879 unsigned long flags; /* ATA_FLAG_xxx */ 880 /* Flags that change dynamically, protected by ap->lock */ 881 unsigned int pflags; /* ATA_PFLAG_xxx */ 882 unsigned int print_id; /* user visible unique port ID */ 883 unsigned int port_no; /* 0 based port no. inside the host */ 884 885#ifdef CONFIG_ATA_SFF 886 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ 887 u8 ctl; /* cache of ATA control register */ 888 u8 last_ctl; /* Cache last written value */ 889 struct ata_link* sff_pio_task_link; /* link currently used */ 890 struct delayed_work sff_pio_task; 891#ifdef CONFIG_ATA_BMDMA 892 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */ 893 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */ 894#endif /* CONFIG_ATA_BMDMA */ 895#endif /* CONFIG_ATA_SFF */ 896 897 unsigned int pio_mask; 898 unsigned int mwdma_mask; 899 unsigned int udma_mask; 900 unsigned int cbl; /* cable type; ATA_CBL_xxx */ 901 902 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE + 1]; 903 u64 qc_active; 904 int nr_active_links; /* #links with active qcs */ 905 906 struct work_struct deferred_qc_work; 907 struct ata_queued_cmd *deferred_qc; 908 909 struct ata_link link; /* host default link */ 910 struct ata_link *slave_link; /* see ata_slave_link_init() */ 911 912 int nr_pmp_links; /* nr of available PMP links */ 913 struct ata_link *pmp_link; /* array of PMP links */ 914 struct ata_link *excl_link; /* for PMP qc exclusion */ 915 916 struct ata_port_stats stats; 917 struct ata_host *host; 918 struct device *dev; 919 struct device tdev; 920 921 struct mutex scsi_scan_mutex; 922 struct delayed_work hotplug_task; 923 struct delayed_work scsi_rescan_task; 924 925 unsigned int hsm_task_state; 926 927 struct list_head eh_done_q; 928 wait_queue_head_t eh_wait_q; 929 int eh_tries; 930 struct completion park_req_pending; 931 932 pm_message_t pm_mesg; 933 enum ata_lpm_policy target_lpm_policy; 934 935 struct timer_list fastdrain_timer; 936 unsigned int fastdrain_cnt; 937 938 async_cookie_t cookie; 939 940 int em_message_type; 941 void *private_data; 942 943#ifdef CONFIG_ATA_ACPI 944 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */ 945#endif 946}; 947 948/* The following initializer overrides a method to NULL whether one of 949 * its parent has the method defined or not. This is equivalent to 950 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant 951 * expression and thus can't be used as an initializer. 952 */ 953#define ATA_OP_NULL (void *)(unsigned long)(-ENOENT) 954 955struct ata_reset_operations { 956 ata_prereset_fn_t prereset; 957 ata_reset_fn_t softreset; 958 ata_reset_fn_t hardreset; 959 ata_postreset_fn_t postreset; 960}; 961 962struct ata_port_operations { 963 /* 964 * Command execution 965 */ 966 int (*qc_defer)(struct ata_queued_cmd *qc); 967 int (*check_atapi_dma)(struct ata_queued_cmd *qc); 968 enum ata_completion_errors (*qc_prep)(struct ata_queued_cmd *qc); 969 unsigned int (*qc_issue)(struct ata_queued_cmd *qc); 970 void (*qc_fill_rtf)(struct ata_queued_cmd *qc); 971 void (*qc_ncq_fill_rtf)(struct ata_port *ap, u64 done_mask); 972 973 /* 974 * Configuration and exception handling 975 */ 976 int (*cable_detect)(struct ata_port *ap); 977 unsigned int (*mode_filter)(struct ata_device *dev, unsigned int xfer_mask); 978 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev); 979 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev); 980 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev); 981 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, 982 __le16 *id); 983 984 void (*dev_config)(struct ata_device *dev); 985 986 void (*freeze)(struct ata_port *ap); 987 void (*thaw)(struct ata_port *ap); 988 struct ata_reset_operations reset; 989 struct ata_reset_operations pmp_reset; 990 void (*error_handler)(struct ata_port *ap); 991 void (*lost_interrupt)(struct ata_port *ap); 992 void (*post_internal_cmd)(struct ata_queued_cmd *qc); 993 void (*sched_eh)(struct ata_port *ap); 994 void (*end_eh)(struct ata_port *ap); 995 996 /* 997 * Optional features 998 */ 999 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val); 1000 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val); 1001 void (*pmp_attach)(struct ata_port *ap); 1002 void (*pmp_detach)(struct ata_port *ap); 1003 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy, 1004 unsigned hints); 1005 1006 /* 1007 * Start, stop, suspend and resume 1008 */ 1009 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg); 1010 int (*port_resume)(struct ata_port *ap); 1011 int (*port_start)(struct ata_port *ap); 1012 void (*port_stop)(struct ata_port *ap); 1013 void (*host_stop)(struct ata_host *host); 1014 1015#ifdef CONFIG_ATA_SFF 1016 /* 1017 * SFF / taskfile oriented ops 1018 */ 1019 void (*sff_dev_select)(struct ata_port *ap, unsigned int device); 1020 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl); 1021 u8 (*sff_check_status)(struct ata_port *ap); 1022 u8 (*sff_check_altstatus)(struct ata_port *ap); 1023 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf); 1024 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf); 1025 void (*sff_exec_command)(struct ata_port *ap, 1026 const struct ata_taskfile *tf); 1027 unsigned int (*sff_data_xfer)(struct ata_queued_cmd *qc, 1028 unsigned char *buf, unsigned int buflen, int rw); 1029 void (*sff_irq_on)(struct ata_port *); 1030 bool (*sff_irq_check)(struct ata_port *); 1031 void (*sff_irq_clear)(struct ata_port *); 1032 void (*sff_drain_fifo)(struct ata_queued_cmd *qc); 1033 1034#ifdef CONFIG_ATA_BMDMA 1035 void (*bmdma_setup)(struct ata_queued_cmd *qc); 1036 void (*bmdma_start)(struct ata_queued_cmd *qc); 1037 void (*bmdma_stop)(struct ata_queued_cmd *qc); 1038 u8 (*bmdma_status)(struct ata_port *ap); 1039#endif /* CONFIG_ATA_BMDMA */ 1040#endif /* CONFIG_ATA_SFF */ 1041 1042 ssize_t (*em_show)(struct ata_port *ap, char *buf); 1043 ssize_t (*em_store)(struct ata_port *ap, const char *message, 1044 size_t size); 1045 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf); 1046 ssize_t (*sw_activity_store)(struct ata_device *dev, 1047 enum sw_activity val); 1048 ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state, 1049 ssize_t size); 1050 1051 /* 1052 * ->inherits must be the last field and all the preceding 1053 * fields must be pointers. 1054 */ 1055 const struct ata_port_operations *inherits; 1056}; 1057 1058struct ata_port_info { 1059 unsigned long flags; 1060 unsigned long link_flags; 1061 unsigned int pio_mask; 1062 unsigned int mwdma_mask; 1063 unsigned int udma_mask; 1064 struct ata_port_operations *port_ops; 1065 void *private_data; 1066}; 1067 1068struct ata_timing { 1069 unsigned short mode; /* ATA mode */ 1070 unsigned short setup; /* t1 */ 1071 unsigned short act8b; /* t2 for 8-bit I/O */ 1072 unsigned short rec8b; /* t2i for 8-bit I/O */ 1073 unsigned short cyc8b; /* t0 for 8-bit I/O */ 1074 unsigned short active; /* t2 or tD */ 1075 unsigned short recover; /* t2i or tK */ 1076 unsigned short dmack_hold; /* tj */ 1077 unsigned short cycle; /* t0 */ 1078 unsigned short udma; /* t2CYCTYP/2 */ 1079}; 1080 1081/* 1082 * Core layer - drivers/ata/libata-core.c 1083 */ 1084extern struct ata_port_operations ata_dummy_port_ops; 1085extern const struct ata_port_info ata_dummy_port_info; 1086 1087static inline bool ata_is_atapi(u8 prot) 1088{ 1089 return prot & ATA_PROT_FLAG_ATAPI; 1090} 1091 1092static inline bool ata_is_pio(u8 prot) 1093{ 1094 return prot & ATA_PROT_FLAG_PIO; 1095} 1096 1097static inline bool ata_is_dma(u8 prot) 1098{ 1099 return prot & ATA_PROT_FLAG_DMA; 1100} 1101 1102static inline bool ata_is_ncq(u8 prot) 1103{ 1104 return prot & ATA_PROT_FLAG_NCQ; 1105} 1106 1107static inline bool ata_is_data(u8 prot) 1108{ 1109 return prot & (ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA); 1110} 1111 1112static inline int is_multi_taskfile(struct ata_taskfile *tf) 1113{ 1114 return (tf->command == ATA_CMD_READ_MULTI) || 1115 (tf->command == ATA_CMD_WRITE_MULTI) || 1116 (tf->command == ATA_CMD_READ_MULTI_EXT) || 1117 (tf->command == ATA_CMD_WRITE_MULTI_EXT) || 1118 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); 1119} 1120 1121static inline int ata_port_is_dummy(struct ata_port *ap) 1122{ 1123 return ap->ops == &ata_dummy_port_ops; 1124} 1125 1126static inline bool ata_port_is_frozen(const struct ata_port *ap) 1127{ 1128 return ap->pflags & ATA_PFLAG_FROZEN; 1129} 1130 1131extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); 1132extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, 1133 int (*check_ready)(struct ata_link *link)); 1134extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); 1135 1136extern struct ata_host *ata_host_alloc(struct device *dev, int n_ports); 1137extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, 1138 const struct ata_port_info * const * ppi, int n_ports); 1139extern void ata_host_get(struct ata_host *host); 1140extern void ata_host_put(struct ata_host *host); 1141extern int ata_host_start(struct ata_host *host); 1142extern int ata_host_register(struct ata_host *host, 1143 const struct scsi_host_template *sht); 1144extern int ata_host_activate(struct ata_host *host, int irq, 1145 irq_handler_t irq_handler, unsigned long irq_flags, 1146 const struct scsi_host_template *sht); 1147extern void ata_host_detach(struct ata_host *host); 1148extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *); 1149extern int ata_scsi_ioctl(struct scsi_device *dev, unsigned int cmd, 1150 void __user *arg); 1151#ifdef CONFIG_COMPAT 1152#define ATA_SCSI_COMPAT_IOCTL .compat_ioctl = ata_scsi_ioctl, 1153#else 1154#define ATA_SCSI_COMPAT_IOCTL /* empty */ 1155#endif 1156extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd); 1157#if IS_REACHABLE(CONFIG_ATA) 1158bool ata_scsi_dma_need_drain(struct request *rq); 1159#else 1160#define ata_scsi_dma_need_drain NULL 1161#endif 1162extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev, 1163 unsigned int cmd, void __user *arg); 1164extern bool ata_link_online(struct ata_link *link); 1165extern bool ata_link_offline(struct ata_link *link); 1166#ifdef CONFIG_PM 1167extern void ata_host_suspend(struct ata_host *host, pm_message_t mesg); 1168extern void ata_host_resume(struct ata_host *host); 1169extern void ata_sas_port_suspend(struct ata_port *ap); 1170extern void ata_sas_port_resume(struct ata_port *ap); 1171#else 1172static inline void ata_sas_port_suspend(struct ata_port *ap) 1173{ 1174} 1175static inline void ata_sas_port_resume(struct ata_port *ap) 1176{ 1177} 1178#endif 1179extern int ata_ratelimit(void); 1180extern void ata_msleep(struct ata_port *ap, unsigned int msecs); 1181extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask, 1182 u32 val, unsigned int interval, unsigned int timeout); 1183extern int atapi_cmd_type(u8 opcode); 1184extern unsigned int ata_pack_xfermask(unsigned int pio_mask, 1185 unsigned int mwdma_mask, 1186 unsigned int udma_mask); 1187extern void ata_unpack_xfermask(unsigned int xfer_mask, 1188 unsigned int *pio_mask, 1189 unsigned int *mwdma_mask, 1190 unsigned int *udma_mask); 1191extern u8 ata_xfer_mask2mode(unsigned int xfer_mask); 1192extern unsigned int ata_xfer_mode2mask(u8 xfer_mode); 1193extern int ata_xfer_mode2shift(u8 xfer_mode); 1194extern const char *ata_mode_string(unsigned int xfer_mask); 1195extern unsigned int ata_id_xfermask(const u16 *id); 1196extern int ata_std_qc_defer(struct ata_queued_cmd *qc); 1197extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, 1198 unsigned int n_elem); 1199extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); 1200extern unsigned int ata_port_classify(struct ata_port *ap, 1201 const struct ata_taskfile *tf); 1202extern void ata_dev_disable(struct ata_device *adev); 1203extern void ata_id_string(const u16 *id, unsigned char *s, 1204 unsigned int ofs, unsigned int len); 1205extern void ata_id_c_string(const u16 *id, unsigned char *s, 1206 unsigned int ofs, unsigned int len); 1207extern unsigned int ata_do_dev_read_id(struct ata_device *dev, 1208 struct ata_taskfile *tf, __le16 *id); 1209extern void ata_qc_complete(struct ata_queued_cmd *qc); 1210extern u64 ata_qc_get_active(struct ata_port *ap); 1211extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd); 1212extern int ata_std_bios_param(struct scsi_device *sdev, 1213 struct gendisk *unused, 1214 sector_t capacity, int geom[]); 1215extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev); 1216extern int ata_scsi_sdev_init(struct scsi_device *sdev); 1217int ata_scsi_sdev_configure(struct scsi_device *sdev, struct queue_limits *lim); 1218extern void ata_scsi_sdev_destroy(struct scsi_device *sdev); 1219extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, 1220 int queue_depth); 1221extern int ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, 1222 int queue_depth); 1223extern int ata_ncq_prio_supported(struct ata_port *ap, struct scsi_device *sdev, 1224 bool *supported); 1225extern int ata_ncq_prio_enabled(struct ata_port *ap, struct scsi_device *sdev, 1226 bool *enabled); 1227extern int ata_ncq_prio_enable(struct ata_port *ap, struct scsi_device *sdev, 1228 bool enable); 1229extern struct ata_device *ata_dev_pair(struct ata_device *adev); 1230int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); 1231extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap); 1232extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q); 1233 1234/* 1235 * SATA specific code - drivers/ata/libata-sata.c 1236 */ 1237#ifdef CONFIG_SATA_HOST 1238extern const unsigned int sata_deb_timing_normal[]; 1239extern const unsigned int sata_deb_timing_hotplug[]; 1240extern const unsigned int sata_deb_timing_long[]; 1241 1242static inline const unsigned int * 1243sata_ehc_deb_timing(struct ata_eh_context *ehc) 1244{ 1245 if (ehc->i.flags & ATA_EHI_HOTPLUGGED) 1246 return sata_deb_timing_hotplug; 1247 else 1248 return sata_deb_timing_normal; 1249} 1250 1251extern int sata_scr_valid(struct ata_link *link); 1252extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); 1253extern int sata_scr_write(struct ata_link *link, int reg, u32 val); 1254extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); 1255extern int sata_set_spd(struct ata_link *link); 1256int sata_std_hardreset(struct ata_link *link, unsigned int *class, 1257 unsigned long deadline); 1258extern int sata_link_hardreset(struct ata_link *link, 1259 const unsigned int *timing, unsigned long deadline, 1260 bool *online, int (*check_ready)(struct ata_link *)); 1261extern int sata_link_resume(struct ata_link *link, const unsigned int *params, 1262 unsigned long deadline); 1263extern void ata_eh_analyze_ncq_error(struct ata_link *link); 1264#else 1265static inline const unsigned int * 1266sata_ehc_deb_timing(struct ata_eh_context *ehc) 1267{ 1268 return NULL; 1269} 1270static inline int sata_scr_valid(struct ata_link *link) { return 0; } 1271static inline int sata_scr_read(struct ata_link *link, int reg, u32 *val) 1272{ 1273 return -EOPNOTSUPP; 1274} 1275static inline int sata_scr_write(struct ata_link *link, int reg, u32 val) 1276{ 1277 return -EOPNOTSUPP; 1278} 1279static inline int sata_scr_write_flush(struct ata_link *link, int reg, u32 val) 1280{ 1281 return -EOPNOTSUPP; 1282} 1283static inline int sata_set_spd(struct ata_link *link) { return -EOPNOTSUPP; } 1284static inline int sata_std_hardreset(struct ata_link *link, unsigned int *class, 1285 unsigned long deadline) 1286{ 1287 return -EOPNOTSUPP; 1288} 1289static inline int sata_link_hardreset(struct ata_link *link, 1290 const unsigned int *timing, 1291 unsigned long deadline, 1292 bool *online, 1293 int (*check_ready)(struct ata_link *)) 1294{ 1295 if (online) 1296 *online = false; 1297 return -EOPNOTSUPP; 1298} 1299static inline int sata_link_resume(struct ata_link *link, 1300 const unsigned int *params, 1301 unsigned long deadline) 1302{ 1303 return -EOPNOTSUPP; 1304} 1305static inline void ata_eh_analyze_ncq_error(struct ata_link *link) { } 1306#endif 1307extern int sata_link_debounce(struct ata_link *link, 1308 const unsigned int *params, unsigned long deadline); 1309extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy, 1310 bool spm_wakeup); 1311extern int ata_slave_link_init(struct ata_port *ap); 1312extern void ata_port_probe(struct ata_port *ap); 1313extern struct ata_port *ata_port_alloc(struct ata_host *host); 1314extern void ata_port_free(struct ata_port *ap); 1315extern int ata_tport_add(struct device *parent, struct ata_port *ap); 1316extern void ata_tport_delete(struct ata_port *ap); 1317int ata_sas_sdev_configure(struct scsi_device *sdev, struct queue_limits *lim, 1318 struct ata_port *ap); 1319extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap); 1320extern void ata_tf_to_fis(const struct ata_taskfile *tf, 1321 u8 pmp, int is_cmd, u8 *fis); 1322extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); 1323extern int ata_qc_complete_multiple(struct ata_port *ap, u64 qc_active); 1324extern bool sata_lpm_ignore_phy_events(struct ata_link *link); 1325extern int sata_async_notification(struct ata_port *ap); 1326 1327extern int ata_cable_40wire(struct ata_port *ap); 1328extern int ata_cable_80wire(struct ata_port *ap); 1329extern int ata_cable_sata(struct ata_port *ap); 1330extern int ata_cable_ignore(struct ata_port *ap); 1331extern int ata_cable_unknown(struct ata_port *ap); 1332 1333/* Timing helpers */ 1334extern unsigned int ata_pio_need_iordy(const struct ata_device *); 1335extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); 1336 1337/* PCI */ 1338#ifdef CONFIG_PCI 1339struct pci_dev; 1340 1341struct pci_bits { 1342 unsigned int reg; /* PCI config register to read */ 1343 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ 1344 unsigned long mask; 1345 unsigned long val; 1346}; 1347 1348extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); 1349extern void ata_pci_shutdown_one(struct pci_dev *pdev); 1350extern void ata_pci_remove_one(struct pci_dev *pdev); 1351 1352#ifdef CONFIG_PM 1353extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); 1354extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); 1355extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); 1356extern int ata_pci_device_resume(struct pci_dev *pdev); 1357#endif /* CONFIG_PM */ 1358#endif /* CONFIG_PCI */ 1359 1360struct platform_device; 1361 1362extern void ata_platform_remove_one(struct platform_device *pdev); 1363 1364/* 1365 * ACPI - drivers/ata/libata-acpi.c 1366 */ 1367#ifdef CONFIG_ATA_ACPI 1368static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1369{ 1370 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) 1371 return &ap->__acpi_init_gtm; 1372 return NULL; 1373} 1374int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); 1375int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); 1376unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, 1377 const struct ata_acpi_gtm *gtm); 1378int ata_acpi_cbl_pata_type(struct ata_port *ap); 1379#else 1380static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) 1381{ 1382 return NULL; 1383} 1384 1385static inline int ata_acpi_stm(const struct ata_port *ap, 1386 struct ata_acpi_gtm *stm) 1387{ 1388 return -ENOSYS; 1389} 1390 1391static inline int ata_acpi_gtm(const struct ata_port *ap, 1392 struct ata_acpi_gtm *stm) 1393{ 1394 return -ENOSYS; 1395} 1396 1397static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, 1398 const struct ata_acpi_gtm *gtm) 1399{ 1400 return 0; 1401} 1402 1403static inline int ata_acpi_cbl_pata_type(struct ata_port *ap) 1404{ 1405 return ATA_CBL_PATA40; 1406} 1407#endif 1408 1409/* 1410 * EH - drivers/ata/libata-eh.c 1411 */ 1412extern void ata_port_schedule_eh(struct ata_port *ap); 1413extern void ata_port_wait_eh(struct ata_port *ap); 1414extern int ata_link_abort(struct ata_link *link); 1415extern int ata_port_abort(struct ata_port *ap); 1416extern int ata_port_freeze(struct ata_port *ap); 1417 1418extern void ata_eh_freeze_port(struct ata_port *ap); 1419extern void ata_eh_thaw_port(struct ata_port *ap); 1420 1421extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); 1422extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); 1423 1424extern void ata_std_error_handler(struct ata_port *ap); 1425extern void ata_std_sched_eh(struct ata_port *ap); 1426extern void ata_std_end_eh(struct ata_port *ap); 1427extern int ata_link_nr_enabled(struct ata_link *link); 1428 1429/* 1430 * Base operations to inherit from and initializers for sht 1431 * 1432 * Operations 1433 * 1434 * base : Common to all libata drivers. 1435 * sata : SATA controllers w/ native interface. 1436 * pmp : SATA controllers w/ PMP support. 1437 * sff : SFF ATA controllers w/o BMDMA support. 1438 * bmdma : SFF ATA controllers w/ BMDMA support. 1439 * 1440 * sht initializers 1441 * 1442 * BASE : Common to all libata drivers. The user must set 1443 * sg_tablesize and dma_boundary. 1444 * PIO : SFF ATA controllers w/ only PIO support. 1445 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and 1446 * dma_boundary are set to BMDMA limits. 1447 * NCQ : SATA controllers supporting NCQ. The user must set 1448 * sg_tablesize, dma_boundary and can_queue. 1449 */ 1450extern const struct ata_port_operations ata_base_port_ops; 1451extern const struct ata_port_operations sata_port_ops; 1452extern const struct attribute_group *ata_common_sdev_groups[]; 1453 1454/* 1455 * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated 1456 * by the edge drivers. Because the 'module' field of sht must be the 1457 * edge driver's module reference, otherwise the driver can be unloaded 1458 * even if the scsi_device is being accessed. 1459 */ 1460#define __ATA_BASE_SHT(drv_name) \ 1461 .module = THIS_MODULE, \ 1462 .name = drv_name, \ 1463 .ioctl = ata_scsi_ioctl, \ 1464 ATA_SCSI_COMPAT_IOCTL \ 1465 .queuecommand = ata_scsi_queuecmd, \ 1466 .dma_need_drain = ata_scsi_dma_need_drain, \ 1467 .this_id = ATA_SHT_THIS_ID, \ 1468 .emulated = ATA_SHT_EMULATED, \ 1469 .proc_name = drv_name, \ 1470 .sdev_init = ata_scsi_sdev_init, \ 1471 .sdev_destroy = ata_scsi_sdev_destroy, \ 1472 .bios_param = ata_std_bios_param, \ 1473 .unlock_native_capacity = ata_scsi_unlock_native_capacity,\ 1474 .max_sectors = ATA_MAX_SECTORS_LBA48 1475 1476#define ATA_SUBBASE_SHT(drv_name) \ 1477 __ATA_BASE_SHT(drv_name), \ 1478 .can_queue = ATA_DEF_QUEUE, \ 1479 .tag_alloc_policy_rr = true, \ 1480 .sdev_configure = ata_scsi_sdev_configure 1481 1482#define ATA_SUBBASE_SHT_QD(drv_name, drv_qd) \ 1483 __ATA_BASE_SHT(drv_name), \ 1484 .can_queue = drv_qd, \ 1485 .tag_alloc_policy_rr = true, \ 1486 .sdev_configure = ata_scsi_sdev_configure 1487 1488#define ATA_BASE_SHT(drv_name) \ 1489 ATA_SUBBASE_SHT(drv_name), \ 1490 .sdev_groups = ata_common_sdev_groups 1491 1492#ifdef CONFIG_SATA_HOST 1493extern const struct attribute_group *ata_ncq_sdev_groups[]; 1494 1495#define ATA_NCQ_SHT(drv_name) \ 1496 ATA_SUBBASE_SHT(drv_name), \ 1497 .sdev_groups = ata_ncq_sdev_groups, \ 1498 .change_queue_depth = ata_scsi_change_queue_depth 1499 1500#define ATA_NCQ_SHT_QD(drv_name, drv_qd) \ 1501 ATA_SUBBASE_SHT_QD(drv_name, drv_qd), \ 1502 .sdev_groups = ata_ncq_sdev_groups, \ 1503 .change_queue_depth = ata_scsi_change_queue_depth 1504#endif 1505 1506/* 1507 * PMP helpers 1508 */ 1509#ifdef CONFIG_SATA_PMP 1510static inline bool sata_pmp_supported(struct ata_port *ap) 1511{ 1512 return ap->flags & ATA_FLAG_PMP; 1513} 1514 1515static inline bool sata_pmp_attached(struct ata_port *ap) 1516{ 1517 return ap->nr_pmp_links != 0; 1518} 1519 1520static inline bool ata_is_host_link(const struct ata_link *link) 1521{ 1522 return link == &link->ap->link || link == link->ap->slave_link; 1523} 1524#else /* CONFIG_SATA_PMP */ 1525static inline bool sata_pmp_supported(struct ata_port *ap) 1526{ 1527 return false; 1528} 1529 1530static inline bool sata_pmp_attached(struct ata_port *ap) 1531{ 1532 return false; 1533} 1534 1535static inline bool ata_is_host_link(const struct ata_link *link) 1536{ 1537 return true; 1538} 1539#endif /* CONFIG_SATA_PMP */ 1540 1541static inline int sata_srst_pmp(struct ata_link *link) 1542{ 1543 if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) 1544 return SATA_PMP_CTRL_PORT; 1545 return link->pmp; 1546} 1547 1548#define ata_port_printk(level, ap, fmt, ...) \ 1549 pr_ ## level ("ata%u: " fmt, (ap)->print_id, ##__VA_ARGS__) 1550 1551#define ata_port_err(ap, fmt, ...) \ 1552 ata_port_printk(err, ap, fmt, ##__VA_ARGS__) 1553#define ata_port_warn(ap, fmt, ...) \ 1554 ata_port_printk(warn, ap, fmt, ##__VA_ARGS__) 1555#define ata_port_notice(ap, fmt, ...) \ 1556 ata_port_printk(notice, ap, fmt, ##__VA_ARGS__) 1557#define ata_port_info(ap, fmt, ...) \ 1558 ata_port_printk(info, ap, fmt, ##__VA_ARGS__) 1559#define ata_port_dbg(ap, fmt, ...) \ 1560 ata_port_printk(debug, ap, fmt, ##__VA_ARGS__) 1561 1562#define ata_link_printk(level, link, fmt, ...) \ 1563do { \ 1564 if (sata_pmp_attached((link)->ap) || \ 1565 (link)->ap->slave_link) \ 1566 pr_ ## level ("ata%u.%02u: " fmt, \ 1567 (link)->ap->print_id, \ 1568 (link)->pmp, \ 1569 ##__VA_ARGS__); \ 1570 else \ 1571 pr_ ## level ("ata%u: " fmt, \ 1572 (link)->ap->print_id, \ 1573 ##__VA_ARGS__); \ 1574} while (0) 1575 1576#define ata_link_err(link, fmt, ...) \ 1577 ata_link_printk(err, link, fmt, ##__VA_ARGS__) 1578#define ata_link_warn(link, fmt, ...) \ 1579 ata_link_printk(warn, link, fmt, ##__VA_ARGS__) 1580#define ata_link_notice(link, fmt, ...) \ 1581 ata_link_printk(notice, link, fmt, ##__VA_ARGS__) 1582#define ata_link_info(link, fmt, ...) \ 1583 ata_link_printk(info, link, fmt, ##__VA_ARGS__) 1584#define ata_link_dbg(link, fmt, ...) \ 1585 ata_link_printk(debug, link, fmt, ##__VA_ARGS__) 1586 1587#define ata_dev_printk(level, dev, fmt, ...) \ 1588 pr_ ## level("ata%u.%02u: " fmt, \ 1589 (dev)->link->ap->print_id, \ 1590 (dev)->link->pmp + (dev)->devno, \ 1591 ##__VA_ARGS__) 1592 1593#define ata_dev_err(dev, fmt, ...) \ 1594 ata_dev_printk(err, dev, fmt, ##__VA_ARGS__) 1595#define ata_dev_warn(dev, fmt, ...) \ 1596 ata_dev_printk(warn, dev, fmt, ##__VA_ARGS__) 1597#define ata_dev_notice(dev, fmt, ...) \ 1598 ata_dev_printk(notice, dev, fmt, ##__VA_ARGS__) 1599#define ata_dev_info(dev, fmt, ...) \ 1600 ata_dev_printk(info, dev, fmt, ##__VA_ARGS__) 1601#define ata_dev_dbg(dev, fmt, ...) \ 1602 ata_dev_printk(debug, dev, fmt, ##__VA_ARGS__) 1603 1604#define ata_dev_warn_once(dev, fmt, ...) \ 1605 pr_warn_once("ata%u.%02u: " fmt, \ 1606 (dev)->link->ap->print_id, \ 1607 (dev)->link->pmp + (dev)->devno, \ 1608 ##__VA_ARGS__) 1609 1610static inline void ata_print_version_once(const struct device *dev, 1611 const char *version) 1612{ 1613 dev_dbg_once(dev, "version %s\n", version); 1614} 1615 1616/* 1617 * ata_eh_info helpers 1618 */ 1619extern __printf(2, 3) 1620void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); 1621extern __printf(2, 3) 1622void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); 1623extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); 1624 1625static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) 1626{ 1627 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; 1628 ehi->flags |= ATA_EHI_HOTPLUGGED; 1629 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK; 1630 ehi->err_mask |= AC_ERR_ATA_BUS; 1631} 1632 1633/* 1634 * port description helpers 1635 */ 1636extern __printf(2, 3) 1637void ata_port_desc(struct ata_port *ap, const char *fmt, ...); 1638#ifdef CONFIG_PCI 1639extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, 1640 const char *name); 1641#endif 1642static inline void ata_port_desc_misc(struct ata_port *ap, int irq) 1643{ 1644 ata_port_desc(ap, "irq %d", irq); 1645 ata_port_desc(ap, "lpm-pol %d", ap->target_lpm_policy); 1646 if (ap->pflags & ATA_PFLAG_EXTERNAL) 1647 ata_port_desc(ap, "ext"); 1648} 1649 1650static inline bool ata_tag_internal(unsigned int tag) 1651{ 1652 return tag == ATA_TAG_INTERNAL; 1653} 1654 1655static inline bool ata_tag_valid(unsigned int tag) 1656{ 1657 return tag < ATA_MAX_QUEUE || ata_tag_internal(tag); 1658} 1659 1660#define __ata_qc_for_each(ap, qc, tag, max_tag, fn) \ 1661 for ((tag) = 0; (tag) < (max_tag) && \ 1662 ({ qc = fn((ap), (tag)); 1; }); (tag)++) \ 1663 1664/* 1665 * Internal use only, iterate commands ignoring error handling and 1666 * status of 'qc'. 1667 */ 1668#define ata_qc_for_each_raw(ap, qc, tag) \ 1669 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, __ata_qc_from_tag) 1670 1671/* 1672 * Iterate all potential commands that can be queued 1673 */ 1674#define ata_qc_for_each(ap, qc, tag) \ 1675 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, ata_qc_from_tag) 1676 1677/* 1678 * Like ata_qc_for_each, but with the internal tag included 1679 */ 1680#define ata_qc_for_each_with_internal(ap, qc, tag) \ 1681 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE + 1, ata_qc_from_tag) 1682 1683/* 1684 * device helpers 1685 */ 1686static inline unsigned int ata_class_enabled(unsigned int class) 1687{ 1688 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || 1689 class == ATA_DEV_PMP || class == ATA_DEV_SEMB || 1690 class == ATA_DEV_ZAC; 1691} 1692 1693static inline unsigned int ata_class_disabled(unsigned int class) 1694{ 1695 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || 1696 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP || 1697 class == ATA_DEV_ZAC_UNSUP; 1698} 1699 1700static inline unsigned int ata_class_absent(unsigned int class) 1701{ 1702 return !ata_class_enabled(class) && !ata_class_disabled(class); 1703} 1704 1705static inline unsigned int ata_dev_enabled(const struct ata_device *dev) 1706{ 1707 return ata_class_enabled(dev->class); 1708} 1709 1710static inline unsigned int ata_dev_disabled(const struct ata_device *dev) 1711{ 1712 return ata_class_disabled(dev->class); 1713} 1714 1715static inline unsigned int ata_dev_absent(const struct ata_device *dev) 1716{ 1717 return ata_class_absent(dev->class); 1718} 1719 1720/* 1721 * link helpers 1722 */ 1723static inline int ata_link_max_devices(const struct ata_link *link) 1724{ 1725 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) 1726 return 2; 1727 return 1; 1728} 1729 1730static inline int ata_link_active(struct ata_link *link) 1731{ 1732 return ata_tag_valid(link->active_tag) || link->sactive; 1733} 1734 1735/* 1736 * Iterators 1737 * 1738 * ATA_LITER_* constants are used to select link iteration mode and 1739 * ATA_DITER_* device iteration mode. 1740 * 1741 * For a custom iteration directly using ata_{link|dev}_next(), if 1742 * @link or @dev, respectively, is NULL, the first element is 1743 * returned. @dev and @link can be any valid device or link and the 1744 * next element according to the iteration mode will be returned. 1745 * After the last element, NULL is returned. 1746 */ 1747enum ata_link_iter_mode { 1748 ATA_LITER_EDGE, /* if present, PMP links only; otherwise, 1749 * host link. no slave link */ 1750 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */ 1751 ATA_LITER_PMP_FIRST, /* PMP links followed by host link, 1752 * slave link still comes after host link */ 1753}; 1754 1755enum ata_dev_iter_mode { 1756 ATA_DITER_ENABLED, 1757 ATA_DITER_ENABLED_REVERSE, 1758 ATA_DITER_ALL, 1759 ATA_DITER_ALL_REVERSE, 1760}; 1761 1762extern struct ata_link *ata_link_next(struct ata_link *link, 1763 struct ata_port *ap, 1764 enum ata_link_iter_mode mode); 1765 1766extern struct ata_device *ata_dev_next(struct ata_device *dev, 1767 struct ata_link *link, 1768 enum ata_dev_iter_mode mode); 1769 1770/* 1771 * Shortcut notation for iterations 1772 * 1773 * ata_for_each_link() iterates over each link of @ap according to 1774 * @mode. @link points to the current link in the loop. @link is 1775 * NULL after loop termination. ata_for_each_dev() works the same way 1776 * except that it iterates over each device of @link. 1777 * 1778 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be 1779 * specified when using the following shorthand notations. Only the 1780 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be 1781 * specified. This not only increases brevity but also makes it 1782 * impossible to use ATA_LITER_* for device iteration or vice-versa. 1783 */ 1784#define ata_for_each_link(link, ap, mode) \ 1785 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \ 1786 (link) = ata_link_next((link), (ap), ATA_LITER_##mode)) 1787 1788#define ata_for_each_dev(dev, link, mode) \ 1789 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \ 1790 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode)) 1791 1792/** 1793 * ata_ncq_supported - Test whether NCQ is supported 1794 * @dev: ATA device to test 1795 * 1796 * LOCKING: 1797 * spin_lock_irqsave(host lock) 1798 * 1799 * RETURNS: 1800 * true if @dev supports NCQ, false otherwise. 1801 */ 1802static inline bool ata_ncq_supported(struct ata_device *dev) 1803{ 1804 if (!IS_ENABLED(CONFIG_SATA_HOST)) 1805 return false; 1806 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; 1807} 1808 1809/** 1810 * ata_ncq_enabled - Test whether NCQ is enabled 1811 * @dev: ATA device to test 1812 * 1813 * LOCKING: 1814 * spin_lock_irqsave(host lock) 1815 * 1816 * RETURNS: 1817 * true if NCQ is enabled for @dev, false otherwise. 1818 */ 1819static inline bool ata_ncq_enabled(struct ata_device *dev) 1820{ 1821 return ata_ncq_supported(dev) && !(dev->flags & ATA_DFLAG_NCQ_OFF); 1822} 1823 1824static inline bool ata_fpdma_dsm_supported(struct ata_device *dev) 1825{ 1826 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1827 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] & 1828 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM); 1829} 1830 1831static inline bool ata_fpdma_read_log_supported(struct ata_device *dev) 1832{ 1833 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1834 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET] & 1835 ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED); 1836} 1837 1838static inline bool ata_fpdma_zac_mgmt_in_supported(struct ata_device *dev) 1839{ 1840 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && 1841 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET] & 1842 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED); 1843} 1844 1845static inline bool ata_fpdma_zac_mgmt_out_supported(struct ata_device *dev) 1846{ 1847 return (dev->ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET] & 1848 ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT); 1849} 1850 1851static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) 1852{ 1853 qc->tf.ctl |= ATA_NIEN; 1854} 1855 1856static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, 1857 unsigned int tag) 1858{ 1859 if (ata_tag_valid(tag)) 1860 return &ap->qcmd[tag]; 1861 return NULL; 1862} 1863 1864static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, 1865 unsigned int tag) 1866{ 1867 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); 1868 1869 if (unlikely(!qc)) 1870 return qc; 1871 1872 if ((qc->flags & (ATA_QCFLAG_ACTIVE | 1873 ATA_QCFLAG_EH)) == ATA_QCFLAG_ACTIVE) 1874 return qc; 1875 1876 return NULL; 1877} 1878 1879static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc) 1880{ 1881 return qc->nbytes - min(qc->extrabytes, qc->nbytes); 1882} 1883 1884static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) 1885{ 1886 memset(tf, 0, sizeof(*tf)); 1887 1888#ifdef CONFIG_ATA_SFF 1889 tf->ctl = dev->link->ap->ctl; 1890#else 1891 tf->ctl = ATA_DEVCTL_OBS; 1892#endif 1893 if (dev->devno == 0) 1894 tf->device = ATA_DEVICE_OBS; 1895 else 1896 tf->device = ATA_DEVICE_OBS | ATA_DEV1; 1897} 1898 1899static inline void ata_qc_reinit(struct ata_queued_cmd *qc) 1900{ 1901 qc->dma_dir = DMA_NONE; 1902 qc->sg = NULL; 1903 qc->flags = 0; 1904 qc->cursg = NULL; 1905 qc->cursg_ofs = 0; 1906 qc->nbytes = qc->extrabytes = qc->curbytes = 0; 1907 qc->n_elem = 0; 1908 qc->err_mask = 0; 1909 qc->sect_size = ATA_SECT_SIZE; 1910 1911 ata_tf_init(qc->dev, &qc->tf); 1912 1913 /* init result_tf such that it indicates normal completion */ 1914 qc->result_tf.command = ATA_DRDY; 1915 qc->result_tf.feature = 0; 1916} 1917 1918static inline int ata_try_flush_cache(const struct ata_device *dev) 1919{ 1920 return ata_id_wcache_enabled(dev->id) || 1921 ata_id_has_flush(dev->id) || 1922 ata_id_has_flush_ext(dev->id); 1923} 1924 1925static inline unsigned int ac_err_mask(u8 status) 1926{ 1927 if (status & (ATA_BUSY | ATA_DRQ)) 1928 return AC_ERR_HSM; 1929 if (status & (ATA_ERR | ATA_DF)) 1930 return AC_ERR_DEV; 1931 return 0; 1932} 1933 1934static inline unsigned int __ac_err_mask(u8 status) 1935{ 1936 unsigned int mask = ac_err_mask(status); 1937 if (mask == 0) 1938 return AC_ERR_OTHER; 1939 return mask; 1940} 1941 1942static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) 1943{ 1944 return *(struct ata_port **)&host->hostdata[0]; 1945} 1946 1947static inline int ata_check_ready(u8 status) 1948{ 1949 if (!(status & ATA_BUSY)) 1950 return 1; 1951 1952 /* 0xff indicates either no device or device not ready */ 1953 if (status == 0xff) 1954 return -ENODEV; 1955 1956 return 0; 1957} 1958 1959static inline unsigned long ata_deadline(unsigned long from_jiffies, 1960 unsigned int timeout_msecs) 1961{ 1962 return from_jiffies + msecs_to_jiffies(timeout_msecs); 1963} 1964 1965/* Don't open code these in drivers as there are traps. Firstly the range may 1966 change in future hardware and specs, secondly 0xFF means 'no DMA' but is 1967 > UDMA_0. Dyma ddreigiau */ 1968 1969static inline bool ata_using_mwdma(struct ata_device *adev) 1970{ 1971 return adev->dma_mode >= XFER_MW_DMA_0 && 1972 adev->dma_mode <= XFER_MW_DMA_4; 1973} 1974 1975static inline bool ata_using_udma(struct ata_device *adev) 1976{ 1977 return adev->dma_mode >= XFER_UDMA_0 && 1978 adev->dma_mode <= XFER_UDMA_7; 1979} 1980 1981static inline bool ata_dma_enabled(struct ata_device *adev) 1982{ 1983 return adev->dma_mode != 0xFF; 1984} 1985 1986/************************************************************************** 1987 * PATA timings - drivers/ata/libata-pata-timings.c 1988 */ 1989extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); 1990extern int ata_timing_compute(struct ata_device *, unsigned short, 1991 struct ata_timing *, int, int); 1992extern void ata_timing_merge(const struct ata_timing *, 1993 const struct ata_timing *, struct ata_timing *, 1994 unsigned int); 1995 1996/************************************************************************** 1997 * PMP - drivers/ata/libata-pmp.c 1998 */ 1999#ifdef CONFIG_SATA_PMP 2000 2001extern const struct ata_port_operations sata_pmp_port_ops; 2002 2003extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); 2004extern void sata_pmp_error_handler(struct ata_port *ap); 2005 2006#else /* CONFIG_SATA_PMP */ 2007 2008#define sata_pmp_port_ops sata_port_ops 2009#define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer 2010#define sata_pmp_error_handler ata_std_error_handler 2011 2012#endif /* CONFIG_SATA_PMP */ 2013 2014 2015/************************************************************************** 2016 * SFF - drivers/ata/libata-sff.c 2017 */ 2018#ifdef CONFIG_ATA_SFF 2019 2020extern const struct ata_port_operations ata_sff_port_ops; 2021extern const struct ata_port_operations ata_bmdma32_port_ops; 2022 2023/* PIO only, sg_tablesize and dma_boundary limits can be removed */ 2024#define ATA_PIO_SHT(drv_name) \ 2025 ATA_BASE_SHT(drv_name), \ 2026 .sg_tablesize = LIBATA_MAX_PRD, \ 2027 .dma_boundary = ATA_DMA_BOUNDARY 2028 2029extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); 2030extern u8 ata_sff_check_status(struct ata_port *ap); 2031extern void ata_sff_pause(struct ata_port *ap); 2032extern void ata_sff_dma_pause(struct ata_port *ap); 2033extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline); 2034extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); 2035extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf); 2036extern void ata_sff_exec_command(struct ata_port *ap, 2037 const struct ata_taskfile *tf); 2038extern unsigned int ata_sff_data_xfer(struct ata_queued_cmd *qc, 2039 unsigned char *buf, unsigned int buflen, int rw); 2040extern unsigned int ata_sff_data_xfer32(struct ata_queued_cmd *qc, 2041 unsigned char *buf, unsigned int buflen, int rw); 2042extern void ata_sff_irq_on(struct ata_port *ap); 2043extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, 2044 u8 status, int in_wq); 2045extern void ata_sff_queue_work(struct work_struct *work); 2046extern void ata_sff_queue_delayed_work(struct delayed_work *dwork, 2047 unsigned long delay); 2048extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay); 2049extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); 2050extern void ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); 2051extern unsigned int ata_sff_port_intr(struct ata_port *ap, 2052 struct ata_queued_cmd *qc); 2053extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); 2054extern void ata_sff_lost_interrupt(struct ata_port *ap); 2055extern void ata_sff_freeze(struct ata_port *ap); 2056extern void ata_sff_thaw(struct ata_port *ap); 2057extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline); 2058extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, 2059 u8 *r_err); 2060extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask, 2061 unsigned long deadline); 2062extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes, 2063 unsigned long deadline); 2064extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class, 2065 unsigned long deadline); 2066extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes); 2067extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc); 2068extern void ata_sff_error_handler(struct ata_port *ap); 2069extern void ata_sff_std_ports(struct ata_ioports *ioaddr); 2070#ifdef CONFIG_PCI 2071extern int ata_pci_sff_init_host(struct ata_host *host); 2072extern int ata_pci_sff_prepare_host(struct pci_dev *pdev, 2073 const struct ata_port_info * const * ppi, 2074 struct ata_host **r_host); 2075extern int ata_pci_sff_activate_host(struct ata_host *host, 2076 irq_handler_t irq_handler, 2077 const struct scsi_host_template *sht); 2078extern int ata_pci_sff_init_one(struct pci_dev *pdev, 2079 const struct ata_port_info * const * ppi, 2080 const struct scsi_host_template *sht, void *host_priv, int hflags); 2081#endif /* CONFIG_PCI */ 2082 2083#ifdef CONFIG_ATA_BMDMA 2084 2085extern const struct ata_port_operations ata_bmdma_port_ops; 2086 2087#define ATA_BMDMA_SHT(drv_name) \ 2088 ATA_BASE_SHT(drv_name), \ 2089 .sg_tablesize = LIBATA_MAX_PRD, \ 2090 .dma_boundary = ATA_DMA_BOUNDARY 2091 2092extern enum ata_completion_errors ata_bmdma_qc_prep(struct ata_queued_cmd *qc); 2093extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc); 2094extern enum ata_completion_errors ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc); 2095extern unsigned int ata_bmdma_port_intr(struct ata_port *ap, 2096 struct ata_queued_cmd *qc); 2097extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance); 2098extern void ata_bmdma_error_handler(struct ata_port *ap); 2099extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc); 2100extern void ata_bmdma_irq_clear(struct ata_port *ap); 2101extern void ata_bmdma_setup(struct ata_queued_cmd *qc); 2102extern void ata_bmdma_start(struct ata_queued_cmd *qc); 2103extern void ata_bmdma_stop(struct ata_queued_cmd *qc); 2104extern u8 ata_bmdma_status(struct ata_port *ap); 2105extern int ata_bmdma_port_start(struct ata_port *ap); 2106extern int ata_bmdma_port_start32(struct ata_port *ap); 2107 2108#ifdef CONFIG_PCI 2109extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); 2110extern void ata_pci_bmdma_init(struct ata_host *host); 2111extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev, 2112 const struct ata_port_info * const * ppi, 2113 struct ata_host **r_host); 2114extern int ata_pci_bmdma_init_one(struct pci_dev *pdev, 2115 const struct ata_port_info * const * ppi, 2116 const struct scsi_host_template *sht, 2117 void *host_priv, int hflags); 2118#endif /* CONFIG_PCI */ 2119#endif /* CONFIG_ATA_BMDMA */ 2120 2121/** 2122 * ata_sff_busy_wait - Wait for a port status register 2123 * @ap: Port to wait for. 2124 * @bits: bits that must be clear 2125 * @max: number of 10uS waits to perform 2126 * 2127 * Waits up to max*10 microseconds for the selected bits in the port's 2128 * status register to be cleared. 2129 * Returns final value of status register. 2130 * 2131 * LOCKING: 2132 * Inherited from caller. 2133 */ 2134static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits, 2135 unsigned int max) 2136{ 2137 u8 status; 2138 2139 do { 2140 udelay(10); 2141 status = ap->ops->sff_check_status(ap); 2142 max--; 2143 } while (status != 0xff && (status & bits) && (max > 0)); 2144 2145 return status; 2146} 2147 2148/** 2149 * ata_wait_idle - Wait for a port to be idle. 2150 * @ap: Port to wait for. 2151 * 2152 * Waits up to 10ms for port's BUSY and DRQ signals to clear. 2153 * Returns final value of status register. 2154 * 2155 * LOCKING: 2156 * Inherited from caller. 2157 */ 2158static inline u8 ata_wait_idle(struct ata_port *ap) 2159{ 2160 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); 2161 2162 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) 2163 ata_port_dbg(ap, "abnormal Status 0x%X\n", status); 2164 2165 return status; 2166} 2167#else /* CONFIG_ATA_SFF */ 2168static inline int sata_sff_hardreset(struct ata_link *link, unsigned int *class, 2169 unsigned long deadline) 2170{ 2171 return -EOPNOTSUPP; 2172} 2173#endif /* CONFIG_ATA_SFF */ 2174 2175#endif /* __LINUX_LIBATA_H__ */
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