1 2 /* 3 * Copyright 2003-2004 Red Hat, Inc. All rights reserved. 4 * Copyright 2003-2004 Jeff Garzik 5 * 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2, or (at your option) 10 * any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; see the file COPYING. If not, write to 19 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 20 * 21 * 22 * libata documentation is available via 'make {ps|pdf}docs', 23 * as Documentation/DocBook/libata.* 24 * 25 * Hardware documentation available from http://www.t13.org/ 26 * 27 */ 28 29 #ifndef __LINUX_ATA_H__ 30 #define __LINUX_ATA_H__ 31 32 #include <linux/kernel.h> 33 #include <linux/string.h> 34 #include <linux/types.h> 35 #include <asm/byteorder.h> 36 37 /* defines only for the constants which don't work well as enums */ 38 #define ATA_DMA_BOUNDARY 0xffffUL 39 #define ATA_DMA_MASK 0xffffffffULL 40 41 enum { 42 /* various global constants */ 43 ATA_MAX_DEVICES = 2, /* per bus/port */ 44 ATA_MAX_PRD = 256, /* we could make these 256/256 */ 45 ATA_SECT_SIZE = 512, 46 ATA_MAX_SECTORS_128 = 128, 47 ATA_MAX_SECTORS = 256, 48 ATA_MAX_SECTORS_LBA48 = 65535,/* TODO: 65536? */ 49 ATA_MAX_SECTORS_TAPE = 65535, 50 51 ATA_ID_WORDS = 256, 52 ATA_ID_CONFIG = 0, 53 ATA_ID_CYLS = 1, 54 ATA_ID_HEADS = 3, 55 ATA_ID_SECTORS = 6, 56 ATA_ID_SERNO = 10, 57 ATA_ID_BUF_SIZE = 21, 58 ATA_ID_FW_REV = 23, 59 ATA_ID_PROD = 27, 60 ATA_ID_MAX_MULTSECT = 47, 61 ATA_ID_DWORD_IO = 48, 62 ATA_ID_CAPABILITY = 49, 63 ATA_ID_OLD_PIO_MODES = 51, 64 ATA_ID_OLD_DMA_MODES = 52, 65 ATA_ID_FIELD_VALID = 53, 66 ATA_ID_CUR_CYLS = 54, 67 ATA_ID_CUR_HEADS = 55, 68 ATA_ID_CUR_SECTORS = 56, 69 ATA_ID_MULTSECT = 59, 70 ATA_ID_LBA_CAPACITY = 60, 71 ATA_ID_SWDMA_MODES = 62, 72 ATA_ID_MWDMA_MODES = 63, 73 ATA_ID_PIO_MODES = 64, 74 ATA_ID_EIDE_DMA_MIN = 65, 75 ATA_ID_EIDE_DMA_TIME = 66, 76 ATA_ID_EIDE_PIO = 67, 77 ATA_ID_EIDE_PIO_IORDY = 68, 78 ATA_ID_ADDITIONAL_SUPP = 69, 79 ATA_ID_QUEUE_DEPTH = 75, 80 ATA_ID_SATA_CAPABILITY = 76, 81 ATA_ID_SATA_CAPABILITY_2 = 77, 82 ATA_ID_FEATURE_SUPP = 78, 83 ATA_ID_MAJOR_VER = 80, 84 ATA_ID_COMMAND_SET_1 = 82, 85 ATA_ID_COMMAND_SET_2 = 83, 86 ATA_ID_CFSSE = 84, 87 ATA_ID_CFS_ENABLE_1 = 85, 88 ATA_ID_CFS_ENABLE_2 = 86, 89 ATA_ID_CSF_DEFAULT = 87, 90 ATA_ID_UDMA_MODES = 88, 91 ATA_ID_HW_CONFIG = 93, 92 ATA_ID_SPG = 98, 93 ATA_ID_LBA_CAPACITY_2 = 100, 94 ATA_ID_SECTOR_SIZE = 106, 95 ATA_ID_WWN = 108, 96 ATA_ID_LOGICAL_SECTOR_SIZE = 117, /* and 118 */ 97 ATA_ID_COMMAND_SET_3 = 119, 98 ATA_ID_COMMAND_SET_4 = 120, 99 ATA_ID_LAST_LUN = 126, 100 ATA_ID_DLF = 128, 101 ATA_ID_CSFO = 129, 102 ATA_ID_CFA_POWER = 160, 103 ATA_ID_CFA_KEY_MGMT = 162, 104 ATA_ID_CFA_MODES = 163, 105 ATA_ID_DATA_SET_MGMT = 169, 106 ATA_ID_ROT_SPEED = 217, 107 ATA_ID_PIO4 = (1 << 1), 108 109 ATA_ID_SERNO_LEN = 20, 110 ATA_ID_FW_REV_LEN = 8, 111 ATA_ID_PROD_LEN = 40, 112 ATA_ID_WWN_LEN = 8, 113 114 ATA_PCI_CTL_OFS = 2, 115 116 ATA_PIO0 = (1 << 0), 117 ATA_PIO1 = ATA_PIO0 | (1 << 1), 118 ATA_PIO2 = ATA_PIO1 | (1 << 2), 119 ATA_PIO3 = ATA_PIO2 | (1 << 3), 120 ATA_PIO4 = ATA_PIO3 | (1 << 4), 121 ATA_PIO5 = ATA_PIO4 | (1 << 5), 122 ATA_PIO6 = ATA_PIO5 | (1 << 6), 123 124 ATA_PIO4_ONLY = (1 << 4), 125 126 ATA_SWDMA0 = (1 << 0), 127 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1), 128 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2), 129 130 ATA_SWDMA2_ONLY = (1 << 2), 131 132 ATA_MWDMA0 = (1 << 0), 133 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1), 134 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2), 135 ATA_MWDMA3 = ATA_MWDMA2 | (1 << 3), 136 ATA_MWDMA4 = ATA_MWDMA3 | (1 << 4), 137 138 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2), 139 ATA_MWDMA2_ONLY = (1 << 2), 140 141 ATA_UDMA0 = (1 << 0), 142 ATA_UDMA1 = ATA_UDMA0 | (1 << 1), 143 ATA_UDMA2 = ATA_UDMA1 | (1 << 2), 144 ATA_UDMA3 = ATA_UDMA2 | (1 << 3), 145 ATA_UDMA4 = ATA_UDMA3 | (1 << 4), 146 ATA_UDMA5 = ATA_UDMA4 | (1 << 5), 147 ATA_UDMA6 = ATA_UDMA5 | (1 << 6), 148 ATA_UDMA7 = ATA_UDMA6 | (1 << 7), 149 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */ 150 151 ATA_UDMA24_ONLY = (1 << 2) | (1 << 4), 152 153 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */ 154 155 /* DMA-related */ 156 ATA_PRD_SZ = 8, 157 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ), 158 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */ 159 160 ATA_DMA_TABLE_OFS = 4, 161 ATA_DMA_STATUS = 2, 162 ATA_DMA_CMD = 0, 163 ATA_DMA_WR = (1 << 3), 164 ATA_DMA_START = (1 << 0), 165 ATA_DMA_INTR = (1 << 2), 166 ATA_DMA_ERR = (1 << 1), 167 ATA_DMA_ACTIVE = (1 << 0), 168 169 /* bits in ATA command block registers */ 170 ATA_HOB = (1 << 7), /* LBA48 selector */ 171 ATA_NIEN = (1 << 1), /* disable-irq flag */ 172 ATA_LBA = (1 << 6), /* LBA28 selector */ 173 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */ 174 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */ 175 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */ 176 ATA_BUSY = (1 << 7), /* BSY status bit */ 177 ATA_DRDY = (1 << 6), /* device ready */ 178 ATA_DF = (1 << 5), /* device fault */ 179 ATA_DSC = (1 << 4), /* drive seek complete */ 180 ATA_DRQ = (1 << 3), /* data request i/o */ 181 ATA_CORR = (1 << 2), /* corrected data error */ 182 ATA_SENSE = (1 << 1), /* sense code available */ 183 ATA_ERR = (1 << 0), /* have an error */ 184 ATA_SRST = (1 << 2), /* software reset */ 185 ATA_ICRC = (1 << 7), /* interface CRC error */ 186 ATA_BBK = ATA_ICRC, /* pre-EIDE: block marked bad */ 187 ATA_UNC = (1 << 6), /* uncorrectable media error */ 188 ATA_MC = (1 << 5), /* media changed */ 189 ATA_IDNF = (1 << 4), /* ID not found */ 190 ATA_MCR = (1 << 3), /* media change requested */ 191 ATA_ABORTED = (1 << 2), /* command aborted */ 192 ATA_TRK0NF = (1 << 1), /* track 0 not found */ 193 ATA_AMNF = (1 << 0), /* address mark not found */ 194 ATAPI_LFS = 0xF0, /* last failed sense */ 195 ATAPI_EOM = ATA_TRK0NF, /* end of media */ 196 ATAPI_ILI = ATA_AMNF, /* illegal length indication */ 197 ATAPI_IO = (1 << 1), 198 ATAPI_COD = (1 << 0), 199 200 /* ATA command block registers */ 201 ATA_REG_DATA = 0x00, 202 ATA_REG_ERR = 0x01, 203 ATA_REG_NSECT = 0x02, 204 ATA_REG_LBAL = 0x03, 205 ATA_REG_LBAM = 0x04, 206 ATA_REG_LBAH = 0x05, 207 ATA_REG_DEVICE = 0x06, 208 ATA_REG_STATUS = 0x07, 209 210 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */ 211 ATA_REG_CMD = ATA_REG_STATUS, 212 ATA_REG_BYTEL = ATA_REG_LBAM, 213 ATA_REG_BYTEH = ATA_REG_LBAH, 214 ATA_REG_DEVSEL = ATA_REG_DEVICE, 215 ATA_REG_IRQ = ATA_REG_NSECT, 216 217 /* ATA device commands */ 218 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */ 219 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */ 220 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */ 221 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */ 222 ATA_CMD_EDD = 0x90, /* execute device diagnostic */ 223 ATA_CMD_DOWNLOAD_MICRO = 0x92, 224 ATA_CMD_DOWNLOAD_MICRO_DMA = 0x93, 225 ATA_CMD_NOP = 0x00, 226 ATA_CMD_FLUSH = 0xE7, 227 ATA_CMD_FLUSH_EXT = 0xEA, 228 ATA_CMD_ID_ATA = 0xEC, 229 ATA_CMD_ID_ATAPI = 0xA1, 230 ATA_CMD_SERVICE = 0xA2, 231 ATA_CMD_READ = 0xC8, 232 ATA_CMD_READ_EXT = 0x25, 233 ATA_CMD_READ_QUEUED = 0x26, 234 ATA_CMD_READ_STREAM_EXT = 0x2B, 235 ATA_CMD_READ_STREAM_DMA_EXT = 0x2A, 236 ATA_CMD_WRITE = 0xCA, 237 ATA_CMD_WRITE_EXT = 0x35, 238 ATA_CMD_WRITE_QUEUED = 0x36, 239 ATA_CMD_WRITE_STREAM_EXT = 0x3B, 240 ATA_CMD_WRITE_STREAM_DMA_EXT = 0x3A, 241 ATA_CMD_WRITE_FUA_EXT = 0x3D, 242 ATA_CMD_WRITE_QUEUED_FUA_EXT = 0x3E, 243 ATA_CMD_FPDMA_READ = 0x60, 244 ATA_CMD_FPDMA_WRITE = 0x61, 245 ATA_CMD_FPDMA_SEND = 0x64, 246 ATA_CMD_FPDMA_RECV = 0x65, 247 ATA_CMD_PIO_READ = 0x20, 248 ATA_CMD_PIO_READ_EXT = 0x24, 249 ATA_CMD_PIO_WRITE = 0x30, 250 ATA_CMD_PIO_WRITE_EXT = 0x34, 251 ATA_CMD_READ_MULTI = 0xC4, 252 ATA_CMD_READ_MULTI_EXT = 0x29, 253 ATA_CMD_WRITE_MULTI = 0xC5, 254 ATA_CMD_WRITE_MULTI_EXT = 0x39, 255 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE, 256 ATA_CMD_SET_FEATURES = 0xEF, 257 ATA_CMD_SET_MULTI = 0xC6, 258 ATA_CMD_PACKET = 0xA0, 259 ATA_CMD_VERIFY = 0x40, 260 ATA_CMD_VERIFY_EXT = 0x42, 261 ATA_CMD_WRITE_UNCORR_EXT = 0x45, 262 ATA_CMD_STANDBYNOW1 = 0xE0, 263 ATA_CMD_IDLEIMMEDIATE = 0xE1, 264 ATA_CMD_SLEEP = 0xE6, 265 ATA_CMD_INIT_DEV_PARAMS = 0x91, 266 ATA_CMD_READ_NATIVE_MAX = 0xF8, 267 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27, 268 ATA_CMD_SET_MAX = 0xF9, 269 ATA_CMD_SET_MAX_EXT = 0x37, 270 ATA_CMD_READ_LOG_EXT = 0x2F, 271 ATA_CMD_WRITE_LOG_EXT = 0x3F, 272 ATA_CMD_READ_LOG_DMA_EXT = 0x47, 273 ATA_CMD_WRITE_LOG_DMA_EXT = 0x57, 274 ATA_CMD_TRUSTED_NONDATA = 0x5B, 275 ATA_CMD_TRUSTED_RCV = 0x5C, 276 ATA_CMD_TRUSTED_RCV_DMA = 0x5D, 277 ATA_CMD_TRUSTED_SND = 0x5E, 278 ATA_CMD_TRUSTED_SND_DMA = 0x5F, 279 ATA_CMD_PMP_READ = 0xE4, 280 ATA_CMD_PMP_READ_DMA = 0xE9, 281 ATA_CMD_PMP_WRITE = 0xE8, 282 ATA_CMD_PMP_WRITE_DMA = 0xEB, 283 ATA_CMD_CONF_OVERLAY = 0xB1, 284 ATA_CMD_SEC_SET_PASS = 0xF1, 285 ATA_CMD_SEC_UNLOCK = 0xF2, 286 ATA_CMD_SEC_ERASE_PREP = 0xF3, 287 ATA_CMD_SEC_ERASE_UNIT = 0xF4, 288 ATA_CMD_SEC_FREEZE_LOCK = 0xF5, 289 ATA_CMD_SEC_DISABLE_PASS = 0xF6, 290 ATA_CMD_CONFIG_STREAM = 0x51, 291 ATA_CMD_SMART = 0xB0, 292 ATA_CMD_MEDIA_LOCK = 0xDE, 293 ATA_CMD_MEDIA_UNLOCK = 0xDF, 294 ATA_CMD_DSM = 0x06, 295 ATA_CMD_CHK_MED_CRD_TYP = 0xD1, 296 ATA_CMD_CFA_REQ_EXT_ERR = 0x03, 297 ATA_CMD_CFA_WRITE_NE = 0x38, 298 ATA_CMD_CFA_TRANS_SECT = 0x87, 299 ATA_CMD_CFA_ERASE = 0xC0, 300 ATA_CMD_CFA_WRITE_MULT_NE = 0xCD, 301 ATA_CMD_REQ_SENSE_DATA = 0x0B, 302 ATA_CMD_SANITIZE_DEVICE = 0xB4, 303 304 /* marked obsolete in the ATA/ATAPI-7 spec */ 305 ATA_CMD_RESTORE = 0x10, 306 307 /* Subcmds for ATA_CMD_FPDMA_SEND */ 308 ATA_SUBCMD_FPDMA_SEND_DSM = 0x00, 309 ATA_SUBCMD_FPDMA_SEND_WR_LOG_DMA_EXT = 0x02, 310 311 /* READ_LOG_EXT pages */ 312 ATA_LOG_SATA_NCQ = 0x10, 313 ATA_LOG_NCQ_SEND_RECV = 0x13, 314 ATA_LOG_SATA_ID_DEV_DATA = 0x30, 315 ATA_LOG_SATA_SETTINGS = 0x08, 316 ATA_LOG_DEVSLP_OFFSET = 0x30, 317 ATA_LOG_DEVSLP_SIZE = 0x08, 318 ATA_LOG_DEVSLP_MDAT = 0x00, 319 ATA_LOG_DEVSLP_MDAT_MASK = 0x1F, 320 ATA_LOG_DEVSLP_DETO = 0x01, 321 ATA_LOG_DEVSLP_VALID = 0x07, 322 ATA_LOG_DEVSLP_VALID_MASK = 0x80, 323 324 /* NCQ send and receive log */ 325 ATA_LOG_NCQ_SEND_RECV_SUBCMDS_OFFSET = 0x00, 326 ATA_LOG_NCQ_SEND_RECV_SUBCMDS_DSM = (1 << 0), 327 ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET = 0x04, 328 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM = (1 << 0), 329 ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET = 0x08, 330 ATA_LOG_NCQ_SEND_RECV_WR_LOG_OFFSET = 0x0C, 331 ATA_LOG_NCQ_SEND_RECV_SIZE = 0x10, 332 333 /* READ/WRITE LONG (obsolete) */ 334 ATA_CMD_READ_LONG = 0x22, 335 ATA_CMD_READ_LONG_ONCE = 0x23, 336 ATA_CMD_WRITE_LONG = 0x32, 337 ATA_CMD_WRITE_LONG_ONCE = 0x33, 338 339 /* SETFEATURES stuff */ 340 SETFEATURES_XFER = 0x03, 341 XFER_UDMA_7 = 0x47, 342 XFER_UDMA_6 = 0x46, 343 XFER_UDMA_5 = 0x45, 344 XFER_UDMA_4 = 0x44, 345 XFER_UDMA_3 = 0x43, 346 XFER_UDMA_2 = 0x42, 347 XFER_UDMA_1 = 0x41, 348 XFER_UDMA_0 = 0x40, 349 XFER_MW_DMA_4 = 0x24, /* CFA only */ 350 XFER_MW_DMA_3 = 0x23, /* CFA only */ 351 XFER_MW_DMA_2 = 0x22, 352 XFER_MW_DMA_1 = 0x21, 353 XFER_MW_DMA_0 = 0x20, 354 XFER_SW_DMA_2 = 0x12, 355 XFER_SW_DMA_1 = 0x11, 356 XFER_SW_DMA_0 = 0x10, 357 XFER_PIO_6 = 0x0E, /* CFA only */ 358 XFER_PIO_5 = 0x0D, /* CFA only */ 359 XFER_PIO_4 = 0x0C, 360 XFER_PIO_3 = 0x0B, 361 XFER_PIO_2 = 0x0A, 362 XFER_PIO_1 = 0x09, 363 XFER_PIO_0 = 0x08, 364 XFER_PIO_SLOW = 0x00, 365 366 SETFEATURES_WC_ON = 0x02, /* Enable write cache */ 367 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */ 368 369 /* Enable/Disable Automatic Acoustic Management */ 370 SETFEATURES_AAM_ON = 0x42, 371 SETFEATURES_AAM_OFF = 0xC2, 372 373 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */ 374 375 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */ 376 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */ 377 378 /* SETFEATURE Sector counts for SATA features */ 379 SATA_FPDMA_OFFSET = 0x01, /* FPDMA non-zero buffer offsets */ 380 SATA_FPDMA_AA = 0x02, /* FPDMA Setup FIS Auto-Activate */ 381 SATA_DIPM = 0x03, /* Device Initiated Power Management */ 382 SATA_FPDMA_IN_ORDER = 0x04, /* FPDMA in-order data delivery */ 383 SATA_AN = 0x05, /* Asynchronous Notification */ 384 SATA_SSP = 0x06, /* Software Settings Preservation */ 385 SATA_DEVSLP = 0x09, /* Device Sleep */ 386 387 SETFEATURE_SENSE_DATA = 0xC3, /* Sense Data Reporting feature */ 388 389 /* feature values for SET_MAX */ 390 ATA_SET_MAX_ADDR = 0x00, 391 ATA_SET_MAX_PASSWD = 0x01, 392 ATA_SET_MAX_LOCK = 0x02, 393 ATA_SET_MAX_UNLOCK = 0x03, 394 ATA_SET_MAX_FREEZE_LOCK = 0x04, 395 396 /* feature values for DEVICE CONFIGURATION OVERLAY */ 397 ATA_DCO_RESTORE = 0xC0, 398 ATA_DCO_FREEZE_LOCK = 0xC1, 399 ATA_DCO_IDENTIFY = 0xC2, 400 ATA_DCO_SET = 0xC3, 401 402 /* feature values for SMART */ 403 ATA_SMART_ENABLE = 0xD8, 404 ATA_SMART_READ_VALUES = 0xD0, 405 ATA_SMART_READ_THRESHOLDS = 0xD1, 406 407 /* feature values for Data Set Management */ 408 ATA_DSM_TRIM = 0x01, 409 410 /* password used in LBA Mid / LBA High for executing SMART commands */ 411 ATA_SMART_LBAM_PASS = 0x4F, 412 ATA_SMART_LBAH_PASS = 0xC2, 413 414 /* ATAPI stuff */ 415 ATAPI_PKT_DMA = (1 << 0), 416 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir: 417 0=to device, 1=to host */ 418 ATAPI_CDB_LEN = 16, 419 420 /* PMP stuff */ 421 SATA_PMP_MAX_PORTS = 15, 422 SATA_PMP_CTRL_PORT = 15, 423 424 SATA_PMP_GSCR_DWORDS = 128, 425 SATA_PMP_GSCR_PROD_ID = 0, 426 SATA_PMP_GSCR_REV = 1, 427 SATA_PMP_GSCR_PORT_INFO = 2, 428 SATA_PMP_GSCR_ERROR = 32, 429 SATA_PMP_GSCR_ERROR_EN = 33, 430 SATA_PMP_GSCR_FEAT = 64, 431 SATA_PMP_GSCR_FEAT_EN = 96, 432 433 SATA_PMP_PSCR_STATUS = 0, 434 SATA_PMP_PSCR_ERROR = 1, 435 SATA_PMP_PSCR_CONTROL = 2, 436 437 SATA_PMP_FEAT_BIST = (1 << 0), 438 SATA_PMP_FEAT_PMREQ = (1 << 1), 439 SATA_PMP_FEAT_DYNSSC = (1 << 2), 440 SATA_PMP_FEAT_NOTIFY = (1 << 3), 441 442 /* cable types */ 443 ATA_CBL_NONE = 0, 444 ATA_CBL_PATA40 = 1, 445 ATA_CBL_PATA80 = 2, 446 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */ 447 ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */ 448 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */ 449 ATA_CBL_SATA = 6, 450 451 /* SATA Status and Control Registers */ 452 SCR_STATUS = 0, 453 SCR_ERROR = 1, 454 SCR_CONTROL = 2, 455 SCR_ACTIVE = 3, 456 SCR_NOTIFICATION = 4, 457 458 /* SError bits */ 459 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */ 460 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */ 461 SERR_DATA = (1 << 8), /* unrecovered data error */ 462 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */ 463 SERR_PROTOCOL = (1 << 10), /* protocol violation */ 464 SERR_INTERNAL = (1 << 11), /* host internal error */ 465 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */ 466 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */ 467 SERR_COMM_WAKE = (1 << 18), /* Comm wake */ 468 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */ 469 SERR_DISPARITY = (1 << 20), /* Disparity */ 470 SERR_CRC = (1 << 21), /* CRC error */ 471 SERR_HANDSHAKE = (1 << 22), /* Handshake error */ 472 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */ 473 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */ 474 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */ 475 SERR_DEV_XCHG = (1 << 26), /* device exchanged */ 476 }; 477 478 enum ata_tf_protocols { 479 /* ATA taskfile protocols */ 480 ATA_PROT_UNKNOWN, /* unknown/invalid */ 481 ATA_PROT_NODATA, /* no data */ 482 ATA_PROT_PIO, /* PIO data xfer */ 483 ATA_PROT_DMA, /* DMA */ 484 ATA_PROT_NCQ, /* NCQ */ 485 ATAPI_PROT_NODATA, /* packet command, no data */ 486 ATAPI_PROT_PIO, /* packet command, PIO data xfer*/ 487 ATAPI_PROT_DMA, /* packet command with special DMA sauce */ 488 }; 489 490 enum ata_ioctls { 491 ATA_IOC_GET_IO32 = 0x309, 492 ATA_IOC_SET_IO32 = 0x324, 493 }; 494 495 /* core structures */ 496 497 struct ata_bmdma_prd { 498 __le32 addr; 499 __le32 flags_len; 500 }; 501 502 /* 503 * id tests 504 */ 505 #define ata_id_is_ata(id) (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0) 506 #define ata_id_has_lba(id) ((id)[ATA_ID_CAPABILITY] & (1 << 9)) 507 #define ata_id_has_dma(id) ((id)[ATA_ID_CAPABILITY] & (1 << 8)) 508 #define ata_id_has_ncq(id) ((id)[ATA_ID_SATA_CAPABILITY] & (1 << 8)) 509 #define ata_id_queue_depth(id) (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1) 510 #define ata_id_removable(id) ((id)[ATA_ID_CONFIG] & (1 << 7)) 511 #define ata_id_has_atapi_AN(id) \ 512 ((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \ 513 ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \ 514 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 5))) 515 #define ata_id_has_fpdma_aa(id) \ 516 ((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \ 517 ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \ 518 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 2))) 519 #define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10)) 520 #define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11)) 521 #define ata_id_u32(id,n) \ 522 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)])) 523 #define ata_id_u64(id,n) \ 524 ( ((u64) (id)[(n) + 3] << 48) | \ 525 ((u64) (id)[(n) + 2] << 32) | \ 526 ((u64) (id)[(n) + 1] << 16) | \ 527 ((u64) (id)[(n) + 0]) ) 528 529 #define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20) 530 #define ata_id_has_da(id) ((id)[ATA_ID_SATA_CAPABILITY_2] & (1 << 4)) 531 #define ata_id_has_devslp(id) ((id)[ATA_ID_FEATURE_SUPP] & (1 << 8)) 532 #define ata_id_has_ncq_autosense(id) \ 533 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 7)) 534 535 static inline bool ata_id_has_hipm(const u16 *id) 536 { 537 u16 val = id[ATA_ID_SATA_CAPABILITY]; 538 539 if (val == 0 || val == 0xffff) 540 return false; 541 542 return val & (1 << 9); 543 } 544 545 static inline bool ata_id_has_dipm(const u16 *id) 546 { 547 u16 val = id[ATA_ID_FEATURE_SUPP]; 548 549 if (val == 0 || val == 0xffff) 550 return false; 551 552 return val & (1 << 3); 553 } 554 555 556 static inline bool ata_id_has_fua(const u16 *id) 557 { 558 if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000) 559 return false; 560 return id[ATA_ID_CFSSE] & (1 << 6); 561 } 562 563 static inline bool ata_id_has_flush(const u16 *id) 564 { 565 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 566 return false; 567 return id[ATA_ID_COMMAND_SET_2] & (1 << 12); 568 } 569 570 static inline bool ata_id_flush_enabled(const u16 *id) 571 { 572 if (ata_id_has_flush(id) == 0) 573 return false; 574 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 575 return false; 576 return id[ATA_ID_CFS_ENABLE_2] & (1 << 12); 577 } 578 579 static inline bool ata_id_has_flush_ext(const u16 *id) 580 { 581 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 582 return false; 583 return id[ATA_ID_COMMAND_SET_2] & (1 << 13); 584 } 585 586 static inline bool ata_id_flush_ext_enabled(const u16 *id) 587 { 588 if (ata_id_has_flush_ext(id) == 0) 589 return false; 590 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 591 return false; 592 /* 593 * some Maxtor disks have bit 13 defined incorrectly 594 * so check bit 10 too 595 */ 596 return (id[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400; 597 } 598 599 static inline u32 ata_id_logical_sector_size(const u16 *id) 600 { 601 /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128. 602 * IDENTIFY DEVICE data, word 117-118. 603 * 0xd000 ignores bit 13 (logical:physical > 1) 604 */ 605 if ((id[ATA_ID_SECTOR_SIZE] & 0xd000) == 0x5000) 606 return (((id[ATA_ID_LOGICAL_SECTOR_SIZE+1] << 16) 607 + id[ATA_ID_LOGICAL_SECTOR_SIZE]) * sizeof(u16)) ; 608 return ATA_SECT_SIZE; 609 } 610 611 static inline u8 ata_id_log2_per_physical_sector(const u16 *id) 612 { 613 /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128. 614 * IDENTIFY DEVICE data, word 106. 615 * 0xe000 ignores bit 12 (logical sector > 512 bytes) 616 */ 617 if ((id[ATA_ID_SECTOR_SIZE] & 0xe000) == 0x6000) 618 return (id[ATA_ID_SECTOR_SIZE] & 0xf); 619 return 0; 620 } 621 622 /* Offset of logical sectors relative to physical sectors. 623 * 624 * If device has more than one logical sector per physical sector 625 * (aka 512 byte emulation), vendors might offset the "sector 0" address 626 * so sector 63 is "naturally aligned" - e.g. FAT partition table. 627 * This avoids Read/Mod/Write penalties when using FAT partition table 628 * and updating "well aligned" (FS perspective) physical sectors on every 629 * transaction. 630 */ 631 static inline u16 ata_id_logical_sector_offset(const u16 *id, 632 u8 log2_per_phys) 633 { 634 u16 word_209 = id[209]; 635 636 if ((log2_per_phys > 1) && (word_209 & 0xc000) == 0x4000) { 637 u16 first = word_209 & 0x3fff; 638 if (first > 0) 639 return (1 << log2_per_phys) - first; 640 } 641 return 0; 642 } 643 644 static inline bool ata_id_has_lba48(const u16 *id) 645 { 646 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 647 return false; 648 if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2)) 649 return false; 650 return id[ATA_ID_COMMAND_SET_2] & (1 << 10); 651 } 652 653 static inline bool ata_id_lba48_enabled(const u16 *id) 654 { 655 if (ata_id_has_lba48(id) == 0) 656 return false; 657 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 658 return false; 659 return id[ATA_ID_CFS_ENABLE_2] & (1 << 10); 660 } 661 662 static inline bool ata_id_hpa_enabled(const u16 *id) 663 { 664 /* Yes children, word 83 valid bits cover word 82 data */ 665 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 666 return false; 667 /* And 87 covers 85-87 */ 668 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 669 return false; 670 /* Check command sets enabled as well as supported */ 671 if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0) 672 return false; 673 return id[ATA_ID_COMMAND_SET_1] & (1 << 10); 674 } 675 676 static inline bool ata_id_has_wcache(const u16 *id) 677 { 678 /* Yes children, word 83 valid bits cover word 82 data */ 679 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 680 return false; 681 return id[ATA_ID_COMMAND_SET_1] & (1 << 5); 682 } 683 684 static inline bool ata_id_has_pm(const u16 *id) 685 { 686 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 687 return false; 688 return id[ATA_ID_COMMAND_SET_1] & (1 << 3); 689 } 690 691 static inline bool ata_id_rahead_enabled(const u16 *id) 692 { 693 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 694 return false; 695 return id[ATA_ID_CFS_ENABLE_1] & (1 << 6); 696 } 697 698 static inline bool ata_id_wcache_enabled(const u16 *id) 699 { 700 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 701 return false; 702 return id[ATA_ID_CFS_ENABLE_1] & (1 << 5); 703 } 704 705 static inline bool ata_id_has_read_log_dma_ext(const u16 *id) 706 { 707 if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15))) 708 return false; 709 return id[ATA_ID_COMMAND_SET_3] & (1 << 3); 710 } 711 712 static inline bool ata_id_has_sense_reporting(const u16 *id) 713 { 714 if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15))) 715 return false; 716 return id[ATA_ID_COMMAND_SET_3] & (1 << 6); 717 } 718 719 static inline bool ata_id_sense_reporting_enabled(const u16 *id) 720 { 721 if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15))) 722 return false; 723 return id[ATA_ID_COMMAND_SET_4] & (1 << 6); 724 } 725 726 /** 727 * ata_id_major_version - get ATA level of drive 728 * @id: Identify data 729 * 730 * Caveats: 731 * ATA-1 considers identify optional 732 * ATA-2 introduces mandatory identify 733 * ATA-3 introduces word 80 and accurate reporting 734 * 735 * The practical impact of this is that ata_id_major_version cannot 736 * reliably report on drives below ATA3. 737 */ 738 739 static inline unsigned int ata_id_major_version(const u16 *id) 740 { 741 unsigned int mver; 742 743 if (id[ATA_ID_MAJOR_VER] == 0xFFFF) 744 return 0; 745 746 for (mver = 14; mver >= 1; mver--) 747 if (id[ATA_ID_MAJOR_VER] & (1 << mver)) 748 break; 749 return mver; 750 } 751 752 static inline bool ata_id_is_sata(const u16 *id) 753 { 754 /* 755 * See if word 93 is 0 AND drive is at least ATA-5 compatible 756 * verifying that word 80 by casting it to a signed type -- 757 * this trick allows us to filter out the reserved values of 758 * 0x0000 and 0xffff along with the earlier ATA revisions... 759 */ 760 if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020) 761 return true; 762 return false; 763 } 764 765 static inline bool ata_id_has_tpm(const u16 *id) 766 { 767 /* The TPM bits are only valid on ATA8 */ 768 if (ata_id_major_version(id) < 8) 769 return false; 770 if ((id[48] & 0xC000) != 0x4000) 771 return false; 772 return id[48] & (1 << 0); 773 } 774 775 static inline bool ata_id_has_dword_io(const u16 *id) 776 { 777 /* ATA 8 reuses this flag for "trusted" computing */ 778 if (ata_id_major_version(id) > 7) 779 return false; 780 return id[ATA_ID_DWORD_IO] & (1 << 0); 781 } 782 783 static inline bool ata_id_has_unload(const u16 *id) 784 { 785 if (ata_id_major_version(id) >= 7 && 786 (id[ATA_ID_CFSSE] & 0xC000) == 0x4000 && 787 id[ATA_ID_CFSSE] & (1 << 13)) 788 return true; 789 return false; 790 } 791 792 static inline bool ata_id_has_wwn(const u16 *id) 793 { 794 return (id[ATA_ID_CSF_DEFAULT] & 0xC100) == 0x4100; 795 } 796 797 static inline int ata_id_form_factor(const u16 *id) 798 { 799 u16 val = id[168]; 800 801 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff) 802 return 0; 803 804 val &= 0xf; 805 806 if (val > 5) 807 return 0; 808 809 return val; 810 } 811 812 static inline int ata_id_rotation_rate(const u16 *id) 813 { 814 u16 val = id[217]; 815 816 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff) 817 return 0; 818 819 if (val > 1 && val < 0x401) 820 return 0; 821 822 return val; 823 } 824 825 static inline bool ata_id_has_ncq_send_and_recv(const u16 *id) 826 { 827 return id[ATA_ID_SATA_CAPABILITY_2] & BIT(6); 828 } 829 830 static inline bool ata_id_has_trim(const u16 *id) 831 { 832 if (ata_id_major_version(id) >= 7 && 833 (id[ATA_ID_DATA_SET_MGMT] & 1)) 834 return true; 835 return false; 836 } 837 838 static inline bool ata_id_has_zero_after_trim(const u16 *id) 839 { 840 /* DSM supported, deterministic read, and read zero after trim set */ 841 if (ata_id_has_trim(id) && 842 (id[ATA_ID_ADDITIONAL_SUPP] & 0x4020) == 0x4020) 843 return true; 844 845 return false; 846 } 847 848 static inline bool ata_id_current_chs_valid(const u16 *id) 849 { 850 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command 851 has not been issued to the device then the values of 852 id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */ 853 return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */ 854 id[ATA_ID_CUR_CYLS] && /* cylinders in current translation */ 855 id[ATA_ID_CUR_HEADS] && /* heads in current translation */ 856 id[ATA_ID_CUR_HEADS] <= 16 && 857 id[ATA_ID_CUR_SECTORS]; /* sectors in current translation */ 858 } 859 860 static inline bool ata_id_is_cfa(const u16 *id) 861 { 862 if ((id[ATA_ID_CONFIG] == 0x848A) || /* Traditional CF */ 863 (id[ATA_ID_CONFIG] == 0x844A)) /* Delkin Devices CF */ 864 return true; 865 /* 866 * CF specs don't require specific value in the word 0 anymore and yet 867 * they forbid to report the ATA version in the word 80 and require the 868 * CFA feature set support to be indicated in the word 83 in this case. 869 * Unfortunately, some cards only follow either of this requirements, 870 * and while those that don't indicate CFA feature support need some 871 * sort of quirk list, it seems impractical for the ones that do... 872 */ 873 return (id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004; 874 } 875 876 static inline bool ata_id_is_ssd(const u16 *id) 877 { 878 return id[ATA_ID_ROT_SPEED] == 0x01; 879 } 880 881 static inline bool ata_id_pio_need_iordy(const u16 *id, const u8 pio) 882 { 883 /* CF spec. r4.1 Table 22 says no IORDY on PIO5 and PIO6. */ 884 if (pio > 4 && ata_id_is_cfa(id)) 885 return false; 886 /* For PIO3 and higher it is mandatory. */ 887 if (pio > 2) 888 return true; 889 /* Turn it on when possible. */ 890 return ata_id_has_iordy(id); 891 } 892 893 static inline bool ata_drive_40wire(const u16 *dev_id) 894 { 895 if (ata_id_is_sata(dev_id)) 896 return false; /* SATA */ 897 if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000) 898 return false; /* 80 wire */ 899 return true; 900 } 901 902 static inline bool ata_drive_40wire_relaxed(const u16 *dev_id) 903 { 904 if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000) 905 return false; /* 80 wire */ 906 return true; 907 } 908 909 static inline int atapi_cdb_len(const u16 *dev_id) 910 { 911 u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3; 912 switch (tmp) { 913 case 0: return 12; 914 case 1: return 16; 915 default: return -1; 916 } 917 } 918 919 static inline int atapi_command_packet_set(const u16 *dev_id) 920 { 921 return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f; 922 } 923 924 static inline bool atapi_id_dmadir(const u16 *dev_id) 925 { 926 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000); 927 } 928 929 /* 930 * ata_id_is_lba_capacity_ok() performs a sanity check on 931 * the claimed LBA capacity value for the device. 932 * 933 * Returns 1 if LBA capacity looks sensible, 0 otherwise. 934 * 935 * It is called only once for each device. 936 */ 937 static inline bool ata_id_is_lba_capacity_ok(u16 *id) 938 { 939 unsigned long lba_sects, chs_sects, head, tail; 940 941 /* No non-LBA info .. so valid! */ 942 if (id[ATA_ID_CYLS] == 0) 943 return true; 944 945 lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY); 946 947 /* 948 * The ATA spec tells large drives to return 949 * C/H/S = 16383/16/63 independent of their size. 950 * Some drives can be jumpered to use 15 heads instead of 16. 951 * Some drives can be jumpered to use 4092 cyls instead of 16383. 952 */ 953 if ((id[ATA_ID_CYLS] == 16383 || 954 (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) && 955 id[ATA_ID_SECTORS] == 63 && 956 (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) && 957 (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS])) 958 return true; 959 960 chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS]; 961 962 /* perform a rough sanity check on lba_sects: within 10% is OK */ 963 if (lba_sects - chs_sects < chs_sects/10) 964 return true; 965 966 /* some drives have the word order reversed */ 967 head = (lba_sects >> 16) & 0xffff; 968 tail = lba_sects & 0xffff; 969 lba_sects = head | (tail << 16); 970 971 if (lba_sects - chs_sects < chs_sects/10) { 972 *(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects); 973 return true; /* LBA capacity is (now) good */ 974 } 975 976 return false; /* LBA capacity value may be bad */ 977 } 978 979 static inline void ata_id_to_hd_driveid(u16 *id) 980 { 981 #ifdef __BIG_ENDIAN 982 /* accessed in struct hd_driveid as 8-bit values */ 983 id[ATA_ID_MAX_MULTSECT] = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]); 984 id[ATA_ID_CAPABILITY] = __cpu_to_le16(id[ATA_ID_CAPABILITY]); 985 id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]); 986 id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]); 987 id[ATA_ID_MULTSECT] = __cpu_to_le16(id[ATA_ID_MULTSECT]); 988 989 /* as 32-bit values */ 990 *(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY); 991 *(u32 *)&id[ATA_ID_SPG] = ata_id_u32(id, ATA_ID_SPG); 992 993 /* as 64-bit value */ 994 *(u64 *)&id[ATA_ID_LBA_CAPACITY_2] = 995 ata_id_u64(id, ATA_ID_LBA_CAPACITY_2); 996 #endif 997 } 998 999 /* 1000 * Write LBA Range Entries to the buffer that will cover the extent from 1001 * sector to sector + count. This is used for TRIM and for ADD LBA(S) 1002 * TO NV CACHE PINNED SET. 1003 */ 1004 static inline unsigned ata_set_lba_range_entries(void *_buffer, 1005 unsigned buf_size, u64 sector, unsigned long count) 1006 { 1007 __le64 *buffer = _buffer; 1008 unsigned i = 0, used_bytes; 1009 1010 while (i < buf_size / 8 ) { /* 6-byte LBA + 2-byte range per entry */ 1011 u64 entry = sector | 1012 ((u64)(count > 0xffff ? 0xffff : count) << 48); 1013 buffer[i++] = __cpu_to_le64(entry); 1014 if (count <= 0xffff) 1015 break; 1016 count -= 0xffff; 1017 sector += 0xffff; 1018 } 1019 1020 used_bytes = ALIGN(i * 8, 512); 1021 memset(buffer + i, 0, used_bytes - i * 8); 1022 return used_bytes; 1023 } 1024 1025 static inline bool ata_ok(u8 status) 1026 { 1027 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR)) 1028 == ATA_DRDY); 1029 } 1030 1031 static inline bool lba_28_ok(u64 block, u32 n_block) 1032 { 1033 /* check the ending block number: must be LESS THAN 0x0fffffff */ 1034 return ((block + n_block) < ((1 << 28) - 1)) && (n_block <= 256); 1035 } 1036 1037 static inline bool lba_48_ok(u64 block, u32 n_block) 1038 { 1039 /* check the ending block number */ 1040 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536); 1041 } 1042 1043 #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff) 1044 #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16) 1045 #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff) 1046 #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf) 1047 1048 #endif /* __LINUX_ATA_H__ */ 1049