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_1024 = 1024, 49 ATA_MAX_SECTORS_LBA48 = 65535,/* TODO: 65536? */ 50 ATA_MAX_SECTORS_TAPE = 65535, 51 52 ATA_ID_WORDS = 256, 53 ATA_ID_CONFIG = 0, 54 ATA_ID_CYLS = 1, 55 ATA_ID_HEADS = 3, 56 ATA_ID_SECTORS = 6, 57 ATA_ID_SERNO = 10, 58 ATA_ID_BUF_SIZE = 21, 59 ATA_ID_FW_REV = 23, 60 ATA_ID_PROD = 27, 61 ATA_ID_MAX_MULTSECT = 47, 62 ATA_ID_DWORD_IO = 48, 63 ATA_ID_CAPABILITY = 49, 64 ATA_ID_OLD_PIO_MODES = 51, 65 ATA_ID_OLD_DMA_MODES = 52, 66 ATA_ID_FIELD_VALID = 53, 67 ATA_ID_CUR_CYLS = 54, 68 ATA_ID_CUR_HEADS = 55, 69 ATA_ID_CUR_SECTORS = 56, 70 ATA_ID_MULTSECT = 59, 71 ATA_ID_LBA_CAPACITY = 60, 72 ATA_ID_SWDMA_MODES = 62, 73 ATA_ID_MWDMA_MODES = 63, 74 ATA_ID_PIO_MODES = 64, 75 ATA_ID_EIDE_DMA_MIN = 65, 76 ATA_ID_EIDE_DMA_TIME = 66, 77 ATA_ID_EIDE_PIO = 67, 78 ATA_ID_EIDE_PIO_IORDY = 68, 79 ATA_ID_ADDITIONAL_SUPP = 69, 80 ATA_ID_QUEUE_DEPTH = 75, 81 ATA_ID_SATA_CAPABILITY = 76, 82 ATA_ID_SATA_CAPABILITY_2 = 77, 83 ATA_ID_FEATURE_SUPP = 78, 84 ATA_ID_MAJOR_VER = 80, 85 ATA_ID_COMMAND_SET_1 = 82, 86 ATA_ID_COMMAND_SET_2 = 83, 87 ATA_ID_CFSSE = 84, 88 ATA_ID_CFS_ENABLE_1 = 85, 89 ATA_ID_CFS_ENABLE_2 = 86, 90 ATA_ID_CSF_DEFAULT = 87, 91 ATA_ID_UDMA_MODES = 88, 92 ATA_ID_HW_CONFIG = 93, 93 ATA_ID_SPG = 98, 94 ATA_ID_LBA_CAPACITY_2 = 100, 95 ATA_ID_SECTOR_SIZE = 106, 96 ATA_ID_WWN = 108, 97 ATA_ID_LOGICAL_SECTOR_SIZE = 117, /* and 118 */ 98 ATA_ID_COMMAND_SET_3 = 119, 99 ATA_ID_COMMAND_SET_4 = 120, 100 ATA_ID_LAST_LUN = 126, 101 ATA_ID_DLF = 128, 102 ATA_ID_CSFO = 129, 103 ATA_ID_CFA_POWER = 160, 104 ATA_ID_CFA_KEY_MGMT = 162, 105 ATA_ID_CFA_MODES = 163, 106 ATA_ID_DATA_SET_MGMT = 169, 107 ATA_ID_ROT_SPEED = 217, 108 ATA_ID_PIO4 = (1 << 1), 109 110 ATA_ID_SERNO_LEN = 20, 111 ATA_ID_FW_REV_LEN = 8, 112 ATA_ID_PROD_LEN = 40, 113 ATA_ID_WWN_LEN = 8, 114 115 ATA_PCI_CTL_OFS = 2, 116 117 ATA_PIO0 = (1 << 0), 118 ATA_PIO1 = ATA_PIO0 | (1 << 1), 119 ATA_PIO2 = ATA_PIO1 | (1 << 2), 120 ATA_PIO3 = ATA_PIO2 | (1 << 3), 121 ATA_PIO4 = ATA_PIO3 | (1 << 4), 122 ATA_PIO5 = ATA_PIO4 | (1 << 5), 123 ATA_PIO6 = ATA_PIO5 | (1 << 6), 124 125 ATA_PIO4_ONLY = (1 << 4), 126 127 ATA_SWDMA0 = (1 << 0), 128 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1), 129 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2), 130 131 ATA_SWDMA2_ONLY = (1 << 2), 132 133 ATA_MWDMA0 = (1 << 0), 134 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1), 135 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2), 136 ATA_MWDMA3 = ATA_MWDMA2 | (1 << 3), 137 ATA_MWDMA4 = ATA_MWDMA3 | (1 << 4), 138 139 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2), 140 ATA_MWDMA2_ONLY = (1 << 2), 141 142 ATA_UDMA0 = (1 << 0), 143 ATA_UDMA1 = ATA_UDMA0 | (1 << 1), 144 ATA_UDMA2 = ATA_UDMA1 | (1 << 2), 145 ATA_UDMA3 = ATA_UDMA2 | (1 << 3), 146 ATA_UDMA4 = ATA_UDMA3 | (1 << 4), 147 ATA_UDMA5 = ATA_UDMA4 | (1 << 5), 148 ATA_UDMA6 = ATA_UDMA5 | (1 << 6), 149 ATA_UDMA7 = ATA_UDMA6 | (1 << 7), 150 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */ 151 152 ATA_UDMA24_ONLY = (1 << 2) | (1 << 4), 153 154 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */ 155 156 /* DMA-related */ 157 ATA_PRD_SZ = 8, 158 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ), 159 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */ 160 161 ATA_DMA_TABLE_OFS = 4, 162 ATA_DMA_STATUS = 2, 163 ATA_DMA_CMD = 0, 164 ATA_DMA_WR = (1 << 3), 165 ATA_DMA_START = (1 << 0), 166 ATA_DMA_INTR = (1 << 2), 167 ATA_DMA_ERR = (1 << 1), 168 ATA_DMA_ACTIVE = (1 << 0), 169 170 /* bits in ATA command block registers */ 171 ATA_HOB = (1 << 7), /* LBA48 selector */ 172 ATA_NIEN = (1 << 1), /* disable-irq flag */ 173 ATA_LBA = (1 << 6), /* LBA28 selector */ 174 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */ 175 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */ 176 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */ 177 ATA_BUSY = (1 << 7), /* BSY status bit */ 178 ATA_DRDY = (1 << 6), /* device ready */ 179 ATA_DF = (1 << 5), /* device fault */ 180 ATA_DSC = (1 << 4), /* drive seek complete */ 181 ATA_DRQ = (1 << 3), /* data request i/o */ 182 ATA_CORR = (1 << 2), /* corrected data error */ 183 ATA_SENSE = (1 << 1), /* sense code available */ 184 ATA_ERR = (1 << 0), /* have an error */ 185 ATA_SRST = (1 << 2), /* software reset */ 186 ATA_ICRC = (1 << 7), /* interface CRC error */ 187 ATA_BBK = ATA_ICRC, /* pre-EIDE: block marked bad */ 188 ATA_UNC = (1 << 6), /* uncorrectable media error */ 189 ATA_MC = (1 << 5), /* media changed */ 190 ATA_IDNF = (1 << 4), /* ID not found */ 191 ATA_MCR = (1 << 3), /* media change requested */ 192 ATA_ABORTED = (1 << 2), /* command aborted */ 193 ATA_TRK0NF = (1 << 1), /* track 0 not found */ 194 ATA_AMNF = (1 << 0), /* address mark not found */ 195 ATAPI_LFS = 0xF0, /* last failed sense */ 196 ATAPI_EOM = ATA_TRK0NF, /* end of media */ 197 ATAPI_ILI = ATA_AMNF, /* illegal length indication */ 198 ATAPI_IO = (1 << 1), 199 ATAPI_COD = (1 << 0), 200 201 /* ATA command block registers */ 202 ATA_REG_DATA = 0x00, 203 ATA_REG_ERR = 0x01, 204 ATA_REG_NSECT = 0x02, 205 ATA_REG_LBAL = 0x03, 206 ATA_REG_LBAM = 0x04, 207 ATA_REG_LBAH = 0x05, 208 ATA_REG_DEVICE = 0x06, 209 ATA_REG_STATUS = 0x07, 210 211 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */ 212 ATA_REG_CMD = ATA_REG_STATUS, 213 ATA_REG_BYTEL = ATA_REG_LBAM, 214 ATA_REG_BYTEH = ATA_REG_LBAH, 215 ATA_REG_DEVSEL = ATA_REG_DEVICE, 216 ATA_REG_IRQ = ATA_REG_NSECT, 217 218 /* ATA device commands */ 219 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */ 220 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */ 221 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */ 222 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */ 223 ATA_CMD_EDD = 0x90, /* execute device diagnostic */ 224 ATA_CMD_DOWNLOAD_MICRO = 0x92, 225 ATA_CMD_DOWNLOAD_MICRO_DMA = 0x93, 226 ATA_CMD_NOP = 0x00, 227 ATA_CMD_FLUSH = 0xE7, 228 ATA_CMD_FLUSH_EXT = 0xEA, 229 ATA_CMD_ID_ATA = 0xEC, 230 ATA_CMD_ID_ATAPI = 0xA1, 231 ATA_CMD_SERVICE = 0xA2, 232 ATA_CMD_READ = 0xC8, 233 ATA_CMD_READ_EXT = 0x25, 234 ATA_CMD_READ_QUEUED = 0x26, 235 ATA_CMD_READ_STREAM_EXT = 0x2B, 236 ATA_CMD_READ_STREAM_DMA_EXT = 0x2A, 237 ATA_CMD_WRITE = 0xCA, 238 ATA_CMD_WRITE_EXT = 0x35, 239 ATA_CMD_WRITE_QUEUED = 0x36, 240 ATA_CMD_WRITE_STREAM_EXT = 0x3B, 241 ATA_CMD_WRITE_STREAM_DMA_EXT = 0x3A, 242 ATA_CMD_WRITE_FUA_EXT = 0x3D, 243 ATA_CMD_WRITE_QUEUED_FUA_EXT = 0x3E, 244 ATA_CMD_FPDMA_READ = 0x60, 245 ATA_CMD_FPDMA_WRITE = 0x61, 246 ATA_CMD_FPDMA_SEND = 0x64, 247 ATA_CMD_FPDMA_RECV = 0x65, 248 ATA_CMD_PIO_READ = 0x20, 249 ATA_CMD_PIO_READ_EXT = 0x24, 250 ATA_CMD_PIO_WRITE = 0x30, 251 ATA_CMD_PIO_WRITE_EXT = 0x34, 252 ATA_CMD_READ_MULTI = 0xC4, 253 ATA_CMD_READ_MULTI_EXT = 0x29, 254 ATA_CMD_WRITE_MULTI = 0xC5, 255 ATA_CMD_WRITE_MULTI_EXT = 0x39, 256 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE, 257 ATA_CMD_SET_FEATURES = 0xEF, 258 ATA_CMD_SET_MULTI = 0xC6, 259 ATA_CMD_PACKET = 0xA0, 260 ATA_CMD_VERIFY = 0x40, 261 ATA_CMD_VERIFY_EXT = 0x42, 262 ATA_CMD_WRITE_UNCORR_EXT = 0x45, 263 ATA_CMD_STANDBYNOW1 = 0xE0, 264 ATA_CMD_IDLEIMMEDIATE = 0xE1, 265 ATA_CMD_SLEEP = 0xE6, 266 ATA_CMD_INIT_DEV_PARAMS = 0x91, 267 ATA_CMD_READ_NATIVE_MAX = 0xF8, 268 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27, 269 ATA_CMD_SET_MAX = 0xF9, 270 ATA_CMD_SET_MAX_EXT = 0x37, 271 ATA_CMD_READ_LOG_EXT = 0x2F, 272 ATA_CMD_WRITE_LOG_EXT = 0x3F, 273 ATA_CMD_READ_LOG_DMA_EXT = 0x47, 274 ATA_CMD_WRITE_LOG_DMA_EXT = 0x57, 275 ATA_CMD_TRUSTED_NONDATA = 0x5B, 276 ATA_CMD_TRUSTED_RCV = 0x5C, 277 ATA_CMD_TRUSTED_RCV_DMA = 0x5D, 278 ATA_CMD_TRUSTED_SND = 0x5E, 279 ATA_CMD_TRUSTED_SND_DMA = 0x5F, 280 ATA_CMD_PMP_READ = 0xE4, 281 ATA_CMD_PMP_READ_DMA = 0xE9, 282 ATA_CMD_PMP_WRITE = 0xE8, 283 ATA_CMD_PMP_WRITE_DMA = 0xEB, 284 ATA_CMD_CONF_OVERLAY = 0xB1, 285 ATA_CMD_SEC_SET_PASS = 0xF1, 286 ATA_CMD_SEC_UNLOCK = 0xF2, 287 ATA_CMD_SEC_ERASE_PREP = 0xF3, 288 ATA_CMD_SEC_ERASE_UNIT = 0xF4, 289 ATA_CMD_SEC_FREEZE_LOCK = 0xF5, 290 ATA_CMD_SEC_DISABLE_PASS = 0xF6, 291 ATA_CMD_CONFIG_STREAM = 0x51, 292 ATA_CMD_SMART = 0xB0, 293 ATA_CMD_MEDIA_LOCK = 0xDE, 294 ATA_CMD_MEDIA_UNLOCK = 0xDF, 295 ATA_CMD_DSM = 0x06, 296 ATA_CMD_CHK_MED_CRD_TYP = 0xD1, 297 ATA_CMD_CFA_REQ_EXT_ERR = 0x03, 298 ATA_CMD_CFA_WRITE_NE = 0x38, 299 ATA_CMD_CFA_TRANS_SECT = 0x87, 300 ATA_CMD_CFA_ERASE = 0xC0, 301 ATA_CMD_CFA_WRITE_MULT_NE = 0xCD, 302 ATA_CMD_REQ_SENSE_DATA = 0x0B, 303 ATA_CMD_SANITIZE_DEVICE = 0xB4, 304 305 /* marked obsolete in the ATA/ATAPI-7 spec */ 306 ATA_CMD_RESTORE = 0x10, 307 308 /* Subcmds for ATA_CMD_FPDMA_SEND */ 309 ATA_SUBCMD_FPDMA_SEND_DSM = 0x00, 310 ATA_SUBCMD_FPDMA_SEND_WR_LOG_DMA_EXT = 0x02, 311 312 /* READ_LOG_EXT pages */ 313 ATA_LOG_SATA_NCQ = 0x10, 314 ATA_LOG_NCQ_SEND_RECV = 0x13, 315 ATA_LOG_SATA_ID_DEV_DATA = 0x30, 316 ATA_LOG_SATA_SETTINGS = 0x08, 317 ATA_LOG_DEVSLP_OFFSET = 0x30, 318 ATA_LOG_DEVSLP_SIZE = 0x08, 319 ATA_LOG_DEVSLP_MDAT = 0x00, 320 ATA_LOG_DEVSLP_MDAT_MASK = 0x1F, 321 ATA_LOG_DEVSLP_DETO = 0x01, 322 ATA_LOG_DEVSLP_VALID = 0x07, 323 ATA_LOG_DEVSLP_VALID_MASK = 0x80, 324 325 /* NCQ send and receive log */ 326 ATA_LOG_NCQ_SEND_RECV_SUBCMDS_OFFSET = 0x00, 327 ATA_LOG_NCQ_SEND_RECV_SUBCMDS_DSM = (1 << 0), 328 ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET = 0x04, 329 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM = (1 << 0), 330 ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET = 0x08, 331 ATA_LOG_NCQ_SEND_RECV_WR_LOG_OFFSET = 0x0C, 332 ATA_LOG_NCQ_SEND_RECV_SIZE = 0x10, 333 334 /* READ/WRITE LONG (obsolete) */ 335 ATA_CMD_READ_LONG = 0x22, 336 ATA_CMD_READ_LONG_ONCE = 0x23, 337 ATA_CMD_WRITE_LONG = 0x32, 338 ATA_CMD_WRITE_LONG_ONCE = 0x33, 339 340 /* SETFEATURES stuff */ 341 SETFEATURES_XFER = 0x03, 342 XFER_UDMA_7 = 0x47, 343 XFER_UDMA_6 = 0x46, 344 XFER_UDMA_5 = 0x45, 345 XFER_UDMA_4 = 0x44, 346 XFER_UDMA_3 = 0x43, 347 XFER_UDMA_2 = 0x42, 348 XFER_UDMA_1 = 0x41, 349 XFER_UDMA_0 = 0x40, 350 XFER_MW_DMA_4 = 0x24, /* CFA only */ 351 XFER_MW_DMA_3 = 0x23, /* CFA only */ 352 XFER_MW_DMA_2 = 0x22, 353 XFER_MW_DMA_1 = 0x21, 354 XFER_MW_DMA_0 = 0x20, 355 XFER_SW_DMA_2 = 0x12, 356 XFER_SW_DMA_1 = 0x11, 357 XFER_SW_DMA_0 = 0x10, 358 XFER_PIO_6 = 0x0E, /* CFA only */ 359 XFER_PIO_5 = 0x0D, /* CFA only */ 360 XFER_PIO_4 = 0x0C, 361 XFER_PIO_3 = 0x0B, 362 XFER_PIO_2 = 0x0A, 363 XFER_PIO_1 = 0x09, 364 XFER_PIO_0 = 0x08, 365 XFER_PIO_SLOW = 0x00, 366 367 SETFEATURES_WC_ON = 0x02, /* Enable write cache */ 368 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */ 369 370 /* Enable/Disable Automatic Acoustic Management */ 371 SETFEATURES_AAM_ON = 0x42, 372 SETFEATURES_AAM_OFF = 0xC2, 373 374 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */ 375 376 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */ 377 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */ 378 379 /* SETFEATURE Sector counts for SATA features */ 380 SATA_FPDMA_OFFSET = 0x01, /* FPDMA non-zero buffer offsets */ 381 SATA_FPDMA_AA = 0x02, /* FPDMA Setup FIS Auto-Activate */ 382 SATA_DIPM = 0x03, /* Device Initiated Power Management */ 383 SATA_FPDMA_IN_ORDER = 0x04, /* FPDMA in-order data delivery */ 384 SATA_AN = 0x05, /* Asynchronous Notification */ 385 SATA_SSP = 0x06, /* Software Settings Preservation */ 386 SATA_DEVSLP = 0x09, /* Device Sleep */ 387 388 SETFEATURE_SENSE_DATA = 0xC3, /* Sense Data Reporting feature */ 389 390 /* feature values for SET_MAX */ 391 ATA_SET_MAX_ADDR = 0x00, 392 ATA_SET_MAX_PASSWD = 0x01, 393 ATA_SET_MAX_LOCK = 0x02, 394 ATA_SET_MAX_UNLOCK = 0x03, 395 ATA_SET_MAX_FREEZE_LOCK = 0x04, 396 397 /* feature values for DEVICE CONFIGURATION OVERLAY */ 398 ATA_DCO_RESTORE = 0xC0, 399 ATA_DCO_FREEZE_LOCK = 0xC1, 400 ATA_DCO_IDENTIFY = 0xC2, 401 ATA_DCO_SET = 0xC3, 402 403 /* feature values for SMART */ 404 ATA_SMART_ENABLE = 0xD8, 405 ATA_SMART_READ_VALUES = 0xD0, 406 ATA_SMART_READ_THRESHOLDS = 0xD1, 407 408 /* feature values for Data Set Management */ 409 ATA_DSM_TRIM = 0x01, 410 411 /* password used in LBA Mid / LBA High for executing SMART commands */ 412 ATA_SMART_LBAM_PASS = 0x4F, 413 ATA_SMART_LBAH_PASS = 0xC2, 414 415 /* ATAPI stuff */ 416 ATAPI_PKT_DMA = (1 << 0), 417 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir: 418 0=to device, 1=to host */ 419 ATAPI_CDB_LEN = 16, 420 421 /* PMP stuff */ 422 SATA_PMP_MAX_PORTS = 15, 423 SATA_PMP_CTRL_PORT = 15, 424 425 SATA_PMP_GSCR_DWORDS = 128, 426 SATA_PMP_GSCR_PROD_ID = 0, 427 SATA_PMP_GSCR_REV = 1, 428 SATA_PMP_GSCR_PORT_INFO = 2, 429 SATA_PMP_GSCR_ERROR = 32, 430 SATA_PMP_GSCR_ERROR_EN = 33, 431 SATA_PMP_GSCR_FEAT = 64, 432 SATA_PMP_GSCR_FEAT_EN = 96, 433 434 SATA_PMP_PSCR_STATUS = 0, 435 SATA_PMP_PSCR_ERROR = 1, 436 SATA_PMP_PSCR_CONTROL = 2, 437 438 SATA_PMP_FEAT_BIST = (1 << 0), 439 SATA_PMP_FEAT_PMREQ = (1 << 1), 440 SATA_PMP_FEAT_DYNSSC = (1 << 2), 441 SATA_PMP_FEAT_NOTIFY = (1 << 3), 442 443 /* cable types */ 444 ATA_CBL_NONE = 0, 445 ATA_CBL_PATA40 = 1, 446 ATA_CBL_PATA80 = 2, 447 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */ 448 ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */ 449 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */ 450 ATA_CBL_SATA = 6, 451 452 /* SATA Status and Control Registers */ 453 SCR_STATUS = 0, 454 SCR_ERROR = 1, 455 SCR_CONTROL = 2, 456 SCR_ACTIVE = 3, 457 SCR_NOTIFICATION = 4, 458 459 /* SError bits */ 460 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */ 461 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */ 462 SERR_DATA = (1 << 8), /* unrecovered data error */ 463 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */ 464 SERR_PROTOCOL = (1 << 10), /* protocol violation */ 465 SERR_INTERNAL = (1 << 11), /* host internal error */ 466 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */ 467 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */ 468 SERR_COMM_WAKE = (1 << 18), /* Comm wake */ 469 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */ 470 SERR_DISPARITY = (1 << 20), /* Disparity */ 471 SERR_CRC = (1 << 21), /* CRC error */ 472 SERR_HANDSHAKE = (1 << 22), /* Handshake error */ 473 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */ 474 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */ 475 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */ 476 SERR_DEV_XCHG = (1 << 26), /* device exchanged */ 477 }; 478 479 enum ata_tf_protocols { 480 /* ATA taskfile protocols */ 481 ATA_PROT_UNKNOWN, /* unknown/invalid */ 482 ATA_PROT_NODATA, /* no data */ 483 ATA_PROT_PIO, /* PIO data xfer */ 484 ATA_PROT_DMA, /* DMA */ 485 ATA_PROT_NCQ, /* NCQ */ 486 ATAPI_PROT_NODATA, /* packet command, no data */ 487 ATAPI_PROT_PIO, /* packet command, PIO data xfer*/ 488 ATAPI_PROT_DMA, /* packet command with special DMA sauce */ 489 }; 490 491 enum ata_ioctls { 492 ATA_IOC_GET_IO32 = 0x309, 493 ATA_IOC_SET_IO32 = 0x324, 494 }; 495 496 /* core structures */ 497 498 struct ata_bmdma_prd { 499 __le32 addr; 500 __le32 flags_len; 501 }; 502 503 /* 504 * id tests 505 */ 506 #define ata_id_is_ata(id) (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0) 507 #define ata_id_has_lba(id) ((id)[ATA_ID_CAPABILITY] & (1 << 9)) 508 #define ata_id_has_dma(id) ((id)[ATA_ID_CAPABILITY] & (1 << 8)) 509 #define ata_id_has_ncq(id) ((id)[ATA_ID_SATA_CAPABILITY] & (1 << 8)) 510 #define ata_id_queue_depth(id) (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1) 511 #define ata_id_removable(id) ((id)[ATA_ID_CONFIG] & (1 << 7)) 512 #define ata_id_has_atapi_AN(id) \ 513 ((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \ 514 ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \ 515 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 5))) 516 #define ata_id_has_fpdma_aa(id) \ 517 ((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \ 518 ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \ 519 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 2))) 520 #define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10)) 521 #define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11)) 522 #define ata_id_u32(id,n) \ 523 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)])) 524 #define ata_id_u64(id,n) \ 525 ( ((u64) (id)[(n) + 3] << 48) | \ 526 ((u64) (id)[(n) + 2] << 32) | \ 527 ((u64) (id)[(n) + 1] << 16) | \ 528 ((u64) (id)[(n) + 0]) ) 529 530 #define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20) 531 #define ata_id_has_da(id) ((id)[ATA_ID_SATA_CAPABILITY_2] & (1 << 4)) 532 #define ata_id_has_devslp(id) ((id)[ATA_ID_FEATURE_SUPP] & (1 << 8)) 533 #define ata_id_has_ncq_autosense(id) \ 534 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 7)) 535 536 static inline bool ata_id_has_hipm(const u16 *id) 537 { 538 u16 val = id[ATA_ID_SATA_CAPABILITY]; 539 540 if (val == 0 || val == 0xffff) 541 return false; 542 543 return val & (1 << 9); 544 } 545 546 static inline bool ata_id_has_dipm(const u16 *id) 547 { 548 u16 val = id[ATA_ID_FEATURE_SUPP]; 549 550 if (val == 0 || val == 0xffff) 551 return false; 552 553 return val & (1 << 3); 554 } 555 556 557 static inline bool ata_id_has_fua(const u16 *id) 558 { 559 if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000) 560 return false; 561 return id[ATA_ID_CFSSE] & (1 << 6); 562 } 563 564 static inline bool ata_id_has_flush(const u16 *id) 565 { 566 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 567 return false; 568 return id[ATA_ID_COMMAND_SET_2] & (1 << 12); 569 } 570 571 static inline bool ata_id_flush_enabled(const u16 *id) 572 { 573 if (ata_id_has_flush(id) == 0) 574 return false; 575 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 576 return false; 577 return id[ATA_ID_CFS_ENABLE_2] & (1 << 12); 578 } 579 580 static inline bool ata_id_has_flush_ext(const u16 *id) 581 { 582 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 583 return false; 584 return id[ATA_ID_COMMAND_SET_2] & (1 << 13); 585 } 586 587 static inline bool ata_id_flush_ext_enabled(const u16 *id) 588 { 589 if (ata_id_has_flush_ext(id) == 0) 590 return false; 591 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 592 return false; 593 /* 594 * some Maxtor disks have bit 13 defined incorrectly 595 * so check bit 10 too 596 */ 597 return (id[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400; 598 } 599 600 static inline u32 ata_id_logical_sector_size(const u16 *id) 601 { 602 /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128. 603 * IDENTIFY DEVICE data, word 117-118. 604 * 0xd000 ignores bit 13 (logical:physical > 1) 605 */ 606 if ((id[ATA_ID_SECTOR_SIZE] & 0xd000) == 0x5000) 607 return (((id[ATA_ID_LOGICAL_SECTOR_SIZE+1] << 16) 608 + id[ATA_ID_LOGICAL_SECTOR_SIZE]) * sizeof(u16)) ; 609 return ATA_SECT_SIZE; 610 } 611 612 static inline u8 ata_id_log2_per_physical_sector(const u16 *id) 613 { 614 /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128. 615 * IDENTIFY DEVICE data, word 106. 616 * 0xe000 ignores bit 12 (logical sector > 512 bytes) 617 */ 618 if ((id[ATA_ID_SECTOR_SIZE] & 0xe000) == 0x6000) 619 return (id[ATA_ID_SECTOR_SIZE] & 0xf); 620 return 0; 621 } 622 623 /* Offset of logical sectors relative to physical sectors. 624 * 625 * If device has more than one logical sector per physical sector 626 * (aka 512 byte emulation), vendors might offset the "sector 0" address 627 * so sector 63 is "naturally aligned" - e.g. FAT partition table. 628 * This avoids Read/Mod/Write penalties when using FAT partition table 629 * and updating "well aligned" (FS perspective) physical sectors on every 630 * transaction. 631 */ 632 static inline u16 ata_id_logical_sector_offset(const u16 *id, 633 u8 log2_per_phys) 634 { 635 u16 word_209 = id[209]; 636 637 if ((log2_per_phys > 1) && (word_209 & 0xc000) == 0x4000) { 638 u16 first = word_209 & 0x3fff; 639 if (first > 0) 640 return (1 << log2_per_phys) - first; 641 } 642 return 0; 643 } 644 645 static inline bool ata_id_has_lba48(const u16 *id) 646 { 647 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 648 return false; 649 if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2)) 650 return false; 651 return id[ATA_ID_COMMAND_SET_2] & (1 << 10); 652 } 653 654 static inline bool ata_id_lba48_enabled(const u16 *id) 655 { 656 if (ata_id_has_lba48(id) == 0) 657 return false; 658 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 659 return false; 660 return id[ATA_ID_CFS_ENABLE_2] & (1 << 10); 661 } 662 663 static inline bool ata_id_hpa_enabled(const u16 *id) 664 { 665 /* Yes children, word 83 valid bits cover word 82 data */ 666 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 667 return false; 668 /* And 87 covers 85-87 */ 669 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 670 return false; 671 /* Check command sets enabled as well as supported */ 672 if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0) 673 return false; 674 return id[ATA_ID_COMMAND_SET_1] & (1 << 10); 675 } 676 677 static inline bool ata_id_has_wcache(const u16 *id) 678 { 679 /* Yes children, word 83 valid bits cover word 82 data */ 680 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 681 return false; 682 return id[ATA_ID_COMMAND_SET_1] & (1 << 5); 683 } 684 685 static inline bool ata_id_has_pm(const u16 *id) 686 { 687 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 688 return false; 689 return id[ATA_ID_COMMAND_SET_1] & (1 << 3); 690 } 691 692 static inline bool ata_id_rahead_enabled(const u16 *id) 693 { 694 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 695 return false; 696 return id[ATA_ID_CFS_ENABLE_1] & (1 << 6); 697 } 698 699 static inline bool ata_id_wcache_enabled(const u16 *id) 700 { 701 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 702 return false; 703 return id[ATA_ID_CFS_ENABLE_1] & (1 << 5); 704 } 705 706 static inline bool ata_id_has_read_log_dma_ext(const u16 *id) 707 { 708 /* Word 86 must have bit 15 set */ 709 if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15))) 710 return false; 711 712 /* READ LOG DMA EXT support can be signaled either from word 119 713 * or from word 120. The format is the same for both words: Bit 714 * 15 must be cleared, bit 14 set and bit 3 set. 715 */ 716 if ((id[ATA_ID_COMMAND_SET_3] & 0xC008) == 0x4008 || 717 (id[ATA_ID_COMMAND_SET_4] & 0xC008) == 0x4008) 718 return true; 719 720 return false; 721 } 722 723 static inline bool ata_id_has_sense_reporting(const u16 *id) 724 { 725 if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15))) 726 return false; 727 return id[ATA_ID_COMMAND_SET_3] & (1 << 6); 728 } 729 730 static inline bool ata_id_sense_reporting_enabled(const u16 *id) 731 { 732 if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15))) 733 return false; 734 return id[ATA_ID_COMMAND_SET_4] & (1 << 6); 735 } 736 737 /** 738 * ata_id_major_version - get ATA level of drive 739 * @id: Identify data 740 * 741 * Caveats: 742 * ATA-1 considers identify optional 743 * ATA-2 introduces mandatory identify 744 * ATA-3 introduces word 80 and accurate reporting 745 * 746 * The practical impact of this is that ata_id_major_version cannot 747 * reliably report on drives below ATA3. 748 */ 749 750 static inline unsigned int ata_id_major_version(const u16 *id) 751 { 752 unsigned int mver; 753 754 if (id[ATA_ID_MAJOR_VER] == 0xFFFF) 755 return 0; 756 757 for (mver = 14; mver >= 1; mver--) 758 if (id[ATA_ID_MAJOR_VER] & (1 << mver)) 759 break; 760 return mver; 761 } 762 763 static inline bool ata_id_is_sata(const u16 *id) 764 { 765 /* 766 * See if word 93 is 0 AND drive is at least ATA-5 compatible 767 * verifying that word 80 by casting it to a signed type -- 768 * this trick allows us to filter out the reserved values of 769 * 0x0000 and 0xffff along with the earlier ATA revisions... 770 */ 771 if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020) 772 return true; 773 return false; 774 } 775 776 static inline bool ata_id_has_tpm(const u16 *id) 777 { 778 /* The TPM bits are only valid on ATA8 */ 779 if (ata_id_major_version(id) < 8) 780 return false; 781 if ((id[48] & 0xC000) != 0x4000) 782 return false; 783 return id[48] & (1 << 0); 784 } 785 786 static inline bool ata_id_has_dword_io(const u16 *id) 787 { 788 /* ATA 8 reuses this flag for "trusted" computing */ 789 if (ata_id_major_version(id) > 7) 790 return false; 791 return id[ATA_ID_DWORD_IO] & (1 << 0); 792 } 793 794 static inline bool ata_id_has_unload(const u16 *id) 795 { 796 if (ata_id_major_version(id) >= 7 && 797 (id[ATA_ID_CFSSE] & 0xC000) == 0x4000 && 798 id[ATA_ID_CFSSE] & (1 << 13)) 799 return true; 800 return false; 801 } 802 803 static inline bool ata_id_has_wwn(const u16 *id) 804 { 805 return (id[ATA_ID_CSF_DEFAULT] & 0xC100) == 0x4100; 806 } 807 808 static inline int ata_id_form_factor(const u16 *id) 809 { 810 u16 val = id[168]; 811 812 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff) 813 return 0; 814 815 val &= 0xf; 816 817 if (val > 5) 818 return 0; 819 820 return val; 821 } 822 823 static inline int ata_id_rotation_rate(const u16 *id) 824 { 825 u16 val = id[217]; 826 827 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff) 828 return 0; 829 830 if (val > 1 && val < 0x401) 831 return 0; 832 833 return val; 834 } 835 836 static inline bool ata_id_has_ncq_send_and_recv(const u16 *id) 837 { 838 return id[ATA_ID_SATA_CAPABILITY_2] & BIT(6); 839 } 840 841 static inline bool ata_id_has_trim(const u16 *id) 842 { 843 if (ata_id_major_version(id) >= 7 && 844 (id[ATA_ID_DATA_SET_MGMT] & 1)) 845 return true; 846 return false; 847 } 848 849 static inline bool ata_id_has_zero_after_trim(const u16 *id) 850 { 851 /* DSM supported, deterministic read, and read zero after trim set */ 852 if (ata_id_has_trim(id) && 853 (id[ATA_ID_ADDITIONAL_SUPP] & 0x4020) == 0x4020) 854 return true; 855 856 return false; 857 } 858 859 static inline bool ata_id_current_chs_valid(const u16 *id) 860 { 861 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command 862 has not been issued to the device then the values of 863 id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */ 864 return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */ 865 id[ATA_ID_CUR_CYLS] && /* cylinders in current translation */ 866 id[ATA_ID_CUR_HEADS] && /* heads in current translation */ 867 id[ATA_ID_CUR_HEADS] <= 16 && 868 id[ATA_ID_CUR_SECTORS]; /* sectors in current translation */ 869 } 870 871 static inline bool ata_id_is_cfa(const u16 *id) 872 { 873 if ((id[ATA_ID_CONFIG] == 0x848A) || /* Traditional CF */ 874 (id[ATA_ID_CONFIG] == 0x844A)) /* Delkin Devices CF */ 875 return true; 876 /* 877 * CF specs don't require specific value in the word 0 anymore and yet 878 * they forbid to report the ATA version in the word 80 and require the 879 * CFA feature set support to be indicated in the word 83 in this case. 880 * Unfortunately, some cards only follow either of this requirements, 881 * and while those that don't indicate CFA feature support need some 882 * sort of quirk list, it seems impractical for the ones that do... 883 */ 884 return (id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004; 885 } 886 887 static inline bool ata_id_is_ssd(const u16 *id) 888 { 889 return id[ATA_ID_ROT_SPEED] == 0x01; 890 } 891 892 static inline bool ata_id_pio_need_iordy(const u16 *id, const u8 pio) 893 { 894 /* CF spec. r4.1 Table 22 says no IORDY on PIO5 and PIO6. */ 895 if (pio > 4 && ata_id_is_cfa(id)) 896 return false; 897 /* For PIO3 and higher it is mandatory. */ 898 if (pio > 2) 899 return true; 900 /* Turn it on when possible. */ 901 return ata_id_has_iordy(id); 902 } 903 904 static inline bool ata_drive_40wire(const u16 *dev_id) 905 { 906 if (ata_id_is_sata(dev_id)) 907 return false; /* SATA */ 908 if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000) 909 return false; /* 80 wire */ 910 return true; 911 } 912 913 static inline bool ata_drive_40wire_relaxed(const u16 *dev_id) 914 { 915 if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000) 916 return false; /* 80 wire */ 917 return true; 918 } 919 920 static inline int atapi_cdb_len(const u16 *dev_id) 921 { 922 u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3; 923 switch (tmp) { 924 case 0: return 12; 925 case 1: return 16; 926 default: return -1; 927 } 928 } 929 930 static inline int atapi_command_packet_set(const u16 *dev_id) 931 { 932 return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f; 933 } 934 935 static inline bool atapi_id_dmadir(const u16 *dev_id) 936 { 937 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000); 938 } 939 940 /* 941 * ata_id_is_lba_capacity_ok() performs a sanity check on 942 * the claimed LBA capacity value for the device. 943 * 944 * Returns 1 if LBA capacity looks sensible, 0 otherwise. 945 * 946 * It is called only once for each device. 947 */ 948 static inline bool ata_id_is_lba_capacity_ok(u16 *id) 949 { 950 unsigned long lba_sects, chs_sects, head, tail; 951 952 /* No non-LBA info .. so valid! */ 953 if (id[ATA_ID_CYLS] == 0) 954 return true; 955 956 lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY); 957 958 /* 959 * The ATA spec tells large drives to return 960 * C/H/S = 16383/16/63 independent of their size. 961 * Some drives can be jumpered to use 15 heads instead of 16. 962 * Some drives can be jumpered to use 4092 cyls instead of 16383. 963 */ 964 if ((id[ATA_ID_CYLS] == 16383 || 965 (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) && 966 id[ATA_ID_SECTORS] == 63 && 967 (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) && 968 (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS])) 969 return true; 970 971 chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS]; 972 973 /* perform a rough sanity check on lba_sects: within 10% is OK */ 974 if (lba_sects - chs_sects < chs_sects/10) 975 return true; 976 977 /* some drives have the word order reversed */ 978 head = (lba_sects >> 16) & 0xffff; 979 tail = lba_sects & 0xffff; 980 lba_sects = head | (tail << 16); 981 982 if (lba_sects - chs_sects < chs_sects/10) { 983 *(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects); 984 return true; /* LBA capacity is (now) good */ 985 } 986 987 return false; /* LBA capacity value may be bad */ 988 } 989 990 static inline void ata_id_to_hd_driveid(u16 *id) 991 { 992 #ifdef __BIG_ENDIAN 993 /* accessed in struct hd_driveid as 8-bit values */ 994 id[ATA_ID_MAX_MULTSECT] = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]); 995 id[ATA_ID_CAPABILITY] = __cpu_to_le16(id[ATA_ID_CAPABILITY]); 996 id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]); 997 id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]); 998 id[ATA_ID_MULTSECT] = __cpu_to_le16(id[ATA_ID_MULTSECT]); 999 1000 /* as 32-bit values */ 1001 *(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY); 1002 *(u32 *)&id[ATA_ID_SPG] = ata_id_u32(id, ATA_ID_SPG); 1003 1004 /* as 64-bit value */ 1005 *(u64 *)&id[ATA_ID_LBA_CAPACITY_2] = 1006 ata_id_u64(id, ATA_ID_LBA_CAPACITY_2); 1007 #endif 1008 } 1009 1010 /* 1011 * Write LBA Range Entries to the buffer that will cover the extent from 1012 * sector to sector + count. This is used for TRIM and for ADD LBA(S) 1013 * TO NV CACHE PINNED SET. 1014 */ 1015 static inline unsigned ata_set_lba_range_entries(void *_buffer, 1016 unsigned buf_size, u64 sector, unsigned long count) 1017 { 1018 __le64 *buffer = _buffer; 1019 unsigned i = 0, used_bytes; 1020 1021 while (i < buf_size / 8 ) { /* 6-byte LBA + 2-byte range per entry */ 1022 u64 entry = sector | 1023 ((u64)(count > 0xffff ? 0xffff : count) << 48); 1024 buffer[i++] = __cpu_to_le64(entry); 1025 if (count <= 0xffff) 1026 break; 1027 count -= 0xffff; 1028 sector += 0xffff; 1029 } 1030 1031 used_bytes = ALIGN(i * 8, 512); 1032 memset(buffer + i, 0, used_bytes - i * 8); 1033 return used_bytes; 1034 } 1035 1036 static inline bool ata_ok(u8 status) 1037 { 1038 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR)) 1039 == ATA_DRDY); 1040 } 1041 1042 static inline bool lba_28_ok(u64 block, u32 n_block) 1043 { 1044 /* check the ending block number: must be LESS THAN 0x0fffffff */ 1045 return ((block + n_block) < ((1 << 28) - 1)) && (n_block <= 256); 1046 } 1047 1048 static inline bool lba_48_ok(u64 block, u32 n_block) 1049 { 1050 /* check the ending block number */ 1051 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536); 1052 } 1053 1054 #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff) 1055 #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16) 1056 #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff) 1057 #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf) 1058 1059 #endif /* __LINUX_ATA_H__ */ 1060