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_MAJOR_VER = 80, 81 ATA_ID_COMMAND_SET_1 = 82, 82 ATA_ID_COMMAND_SET_2 = 83, 83 ATA_ID_CFSSE = 84, 84 ATA_ID_CFS_ENABLE_1 = 85, 85 ATA_ID_CFS_ENABLE_2 = 86, 86 ATA_ID_CSF_DEFAULT = 87, 87 ATA_ID_UDMA_MODES = 88, 88 ATA_ID_HW_CONFIG = 93, 89 ATA_ID_SPG = 98, 90 ATA_ID_LBA_CAPACITY_2 = 100, 91 ATA_ID_SECTOR_SIZE = 106, 92 ATA_ID_LOGICAL_SECTOR_SIZE = 117, /* and 118 */ 93 ATA_ID_LAST_LUN = 126, 94 ATA_ID_DLF = 128, 95 ATA_ID_CSFO = 129, 96 ATA_ID_CFA_POWER = 160, 97 ATA_ID_CFA_KEY_MGMT = 162, 98 ATA_ID_CFA_MODES = 163, 99 ATA_ID_DATA_SET_MGMT = 169, 100 ATA_ID_ROT_SPEED = 217, 101 ATA_ID_PIO4 = (1 << 1), 102 103 ATA_ID_SERNO_LEN = 20, 104 ATA_ID_FW_REV_LEN = 8, 105 ATA_ID_PROD_LEN = 40, 106 107 ATA_PCI_CTL_OFS = 2, 108 109 ATA_PIO0 = (1 << 0), 110 ATA_PIO1 = ATA_PIO0 | (1 << 1), 111 ATA_PIO2 = ATA_PIO1 | (1 << 2), 112 ATA_PIO3 = ATA_PIO2 | (1 << 3), 113 ATA_PIO4 = ATA_PIO3 | (1 << 4), 114 ATA_PIO5 = ATA_PIO4 | (1 << 5), 115 ATA_PIO6 = ATA_PIO5 | (1 << 6), 116 117 ATA_PIO4_ONLY = (1 << 4), 118 119 ATA_SWDMA0 = (1 << 0), 120 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1), 121 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2), 122 123 ATA_SWDMA2_ONLY = (1 << 2), 124 125 ATA_MWDMA0 = (1 << 0), 126 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1), 127 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2), 128 ATA_MWDMA3 = ATA_MWDMA2 | (1 << 3), 129 ATA_MWDMA4 = ATA_MWDMA3 | (1 << 4), 130 131 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2), 132 ATA_MWDMA2_ONLY = (1 << 2), 133 134 ATA_UDMA0 = (1 << 0), 135 ATA_UDMA1 = ATA_UDMA0 | (1 << 1), 136 ATA_UDMA2 = ATA_UDMA1 | (1 << 2), 137 ATA_UDMA3 = ATA_UDMA2 | (1 << 3), 138 ATA_UDMA4 = ATA_UDMA3 | (1 << 4), 139 ATA_UDMA5 = ATA_UDMA4 | (1 << 5), 140 ATA_UDMA6 = ATA_UDMA5 | (1 << 6), 141 ATA_UDMA7 = ATA_UDMA6 | (1 << 7), 142 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */ 143 144 ATA_UDMA24_ONLY = (1 << 2) | (1 << 4), 145 146 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */ 147 148 /* DMA-related */ 149 ATA_PRD_SZ = 8, 150 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ), 151 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */ 152 153 ATA_DMA_TABLE_OFS = 4, 154 ATA_DMA_STATUS = 2, 155 ATA_DMA_CMD = 0, 156 ATA_DMA_WR = (1 << 3), 157 ATA_DMA_START = (1 << 0), 158 ATA_DMA_INTR = (1 << 2), 159 ATA_DMA_ERR = (1 << 1), 160 ATA_DMA_ACTIVE = (1 << 0), 161 162 /* bits in ATA command block registers */ 163 ATA_HOB = (1 << 7), /* LBA48 selector */ 164 ATA_NIEN = (1 << 1), /* disable-irq flag */ 165 ATA_LBA = (1 << 6), /* LBA28 selector */ 166 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */ 167 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */ 168 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */ 169 ATA_BUSY = (1 << 7), /* BSY status bit */ 170 ATA_DRDY = (1 << 6), /* device ready */ 171 ATA_DF = (1 << 5), /* device fault */ 172 ATA_DSC = (1 << 4), /* drive seek complete */ 173 ATA_DRQ = (1 << 3), /* data request i/o */ 174 ATA_CORR = (1 << 2), /* corrected data error */ 175 ATA_IDX = (1 << 1), /* index */ 176 ATA_ERR = (1 << 0), /* have an error */ 177 ATA_SRST = (1 << 2), /* software reset */ 178 ATA_ICRC = (1 << 7), /* interface CRC error */ 179 ATA_BBK = ATA_ICRC, /* pre-EIDE: block marked bad */ 180 ATA_UNC = (1 << 6), /* uncorrectable media error */ 181 ATA_MC = (1 << 5), /* media changed */ 182 ATA_IDNF = (1 << 4), /* ID not found */ 183 ATA_MCR = (1 << 3), /* media change requested */ 184 ATA_ABORTED = (1 << 2), /* command aborted */ 185 ATA_TRK0NF = (1 << 1), /* track 0 not found */ 186 ATA_AMNF = (1 << 0), /* address mark not found */ 187 ATAPI_LFS = 0xF0, /* last failed sense */ 188 ATAPI_EOM = ATA_TRK0NF, /* end of media */ 189 ATAPI_ILI = ATA_AMNF, /* illegal length indication */ 190 ATAPI_IO = (1 << 1), 191 ATAPI_COD = (1 << 0), 192 193 /* ATA command block registers */ 194 ATA_REG_DATA = 0x00, 195 ATA_REG_ERR = 0x01, 196 ATA_REG_NSECT = 0x02, 197 ATA_REG_LBAL = 0x03, 198 ATA_REG_LBAM = 0x04, 199 ATA_REG_LBAH = 0x05, 200 ATA_REG_DEVICE = 0x06, 201 ATA_REG_STATUS = 0x07, 202 203 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */ 204 ATA_REG_CMD = ATA_REG_STATUS, 205 ATA_REG_BYTEL = ATA_REG_LBAM, 206 ATA_REG_BYTEH = ATA_REG_LBAH, 207 ATA_REG_DEVSEL = ATA_REG_DEVICE, 208 ATA_REG_IRQ = ATA_REG_NSECT, 209 210 /* ATA device commands */ 211 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */ 212 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */ 213 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */ 214 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */ 215 ATA_CMD_EDD = 0x90, /* execute device diagnostic */ 216 ATA_CMD_DOWNLOAD_MICRO = 0x92, 217 ATA_CMD_NOP = 0x00, 218 ATA_CMD_FLUSH = 0xE7, 219 ATA_CMD_FLUSH_EXT = 0xEA, 220 ATA_CMD_ID_ATA = 0xEC, 221 ATA_CMD_ID_ATAPI = 0xA1, 222 ATA_CMD_SERVICE = 0xA2, 223 ATA_CMD_READ = 0xC8, 224 ATA_CMD_READ_EXT = 0x25, 225 ATA_CMD_READ_QUEUED = 0x26, 226 ATA_CMD_READ_STREAM_EXT = 0x2B, 227 ATA_CMD_READ_STREAM_DMA_EXT = 0x2A, 228 ATA_CMD_WRITE = 0xCA, 229 ATA_CMD_WRITE_EXT = 0x35, 230 ATA_CMD_WRITE_QUEUED = 0x36, 231 ATA_CMD_WRITE_STREAM_EXT = 0x3B, 232 ATA_CMD_WRITE_STREAM_DMA_EXT = 0x3A, 233 ATA_CMD_WRITE_FUA_EXT = 0x3D, 234 ATA_CMD_WRITE_QUEUED_FUA_EXT = 0x3E, 235 ATA_CMD_FPDMA_READ = 0x60, 236 ATA_CMD_FPDMA_WRITE = 0x61, 237 ATA_CMD_PIO_READ = 0x20, 238 ATA_CMD_PIO_READ_EXT = 0x24, 239 ATA_CMD_PIO_WRITE = 0x30, 240 ATA_CMD_PIO_WRITE_EXT = 0x34, 241 ATA_CMD_READ_MULTI = 0xC4, 242 ATA_CMD_READ_MULTI_EXT = 0x29, 243 ATA_CMD_WRITE_MULTI = 0xC5, 244 ATA_CMD_WRITE_MULTI_EXT = 0x39, 245 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE, 246 ATA_CMD_SET_FEATURES = 0xEF, 247 ATA_CMD_SET_MULTI = 0xC6, 248 ATA_CMD_PACKET = 0xA0, 249 ATA_CMD_VERIFY = 0x40, 250 ATA_CMD_VERIFY_EXT = 0x42, 251 ATA_CMD_WRITE_UNCORR_EXT = 0x45, 252 ATA_CMD_STANDBYNOW1 = 0xE0, 253 ATA_CMD_IDLEIMMEDIATE = 0xE1, 254 ATA_CMD_SLEEP = 0xE6, 255 ATA_CMD_INIT_DEV_PARAMS = 0x91, 256 ATA_CMD_READ_NATIVE_MAX = 0xF8, 257 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27, 258 ATA_CMD_SET_MAX = 0xF9, 259 ATA_CMD_SET_MAX_EXT = 0x37, 260 ATA_CMD_READ_LOG_EXT = 0x2F, 261 ATA_CMD_WRITE_LOG_EXT = 0x3F, 262 ATA_CMD_READ_LOG_DMA_EXT = 0x47, 263 ATA_CMD_WRITE_LOG_DMA_EXT = 0x57, 264 ATA_CMD_TRUSTED_RCV = 0x5C, 265 ATA_CMD_TRUSTED_RCV_DMA = 0x5D, 266 ATA_CMD_TRUSTED_SND = 0x5E, 267 ATA_CMD_TRUSTED_SND_DMA = 0x5F, 268 ATA_CMD_PMP_READ = 0xE4, 269 ATA_CMD_PMP_WRITE = 0xE8, 270 ATA_CMD_CONF_OVERLAY = 0xB1, 271 ATA_CMD_SEC_SET_PASS = 0xF1, 272 ATA_CMD_SEC_UNLOCK = 0xF2, 273 ATA_CMD_SEC_ERASE_PREP = 0xF3, 274 ATA_CMD_SEC_ERASE_UNIT = 0xF4, 275 ATA_CMD_SEC_FREEZE_LOCK = 0xF5, 276 ATA_CMD_SEC_DISABLE_PASS = 0xF6, 277 ATA_CMD_CONFIG_STREAM = 0x51, 278 ATA_CMD_SMART = 0xB0, 279 ATA_CMD_MEDIA_LOCK = 0xDE, 280 ATA_CMD_MEDIA_UNLOCK = 0xDF, 281 ATA_CMD_DSM = 0x06, 282 ATA_CMD_CHK_MED_CRD_TYP = 0xD1, 283 ATA_CMD_CFA_REQ_EXT_ERR = 0x03, 284 ATA_CMD_CFA_WRITE_NE = 0x38, 285 ATA_CMD_CFA_TRANS_SECT = 0x87, 286 ATA_CMD_CFA_ERASE = 0xC0, 287 ATA_CMD_CFA_WRITE_MULT_NE = 0xCD, 288 /* marked obsolete in the ATA/ATAPI-7 spec */ 289 ATA_CMD_RESTORE = 0x10, 290 291 /* READ_LOG_EXT pages */ 292 ATA_LOG_SATA_NCQ = 0x10, 293 294 /* READ/WRITE LONG (obsolete) */ 295 ATA_CMD_READ_LONG = 0x22, 296 ATA_CMD_READ_LONG_ONCE = 0x23, 297 ATA_CMD_WRITE_LONG = 0x32, 298 ATA_CMD_WRITE_LONG_ONCE = 0x33, 299 300 /* SETFEATURES stuff */ 301 SETFEATURES_XFER = 0x03, 302 XFER_UDMA_7 = 0x47, 303 XFER_UDMA_6 = 0x46, 304 XFER_UDMA_5 = 0x45, 305 XFER_UDMA_4 = 0x44, 306 XFER_UDMA_3 = 0x43, 307 XFER_UDMA_2 = 0x42, 308 XFER_UDMA_1 = 0x41, 309 XFER_UDMA_0 = 0x40, 310 XFER_MW_DMA_4 = 0x24, /* CFA only */ 311 XFER_MW_DMA_3 = 0x23, /* CFA only */ 312 XFER_MW_DMA_2 = 0x22, 313 XFER_MW_DMA_1 = 0x21, 314 XFER_MW_DMA_0 = 0x20, 315 XFER_SW_DMA_2 = 0x12, 316 XFER_SW_DMA_1 = 0x11, 317 XFER_SW_DMA_0 = 0x10, 318 XFER_PIO_6 = 0x0E, /* CFA only */ 319 XFER_PIO_5 = 0x0D, /* CFA only */ 320 XFER_PIO_4 = 0x0C, 321 XFER_PIO_3 = 0x0B, 322 XFER_PIO_2 = 0x0A, 323 XFER_PIO_1 = 0x09, 324 XFER_PIO_0 = 0x08, 325 XFER_PIO_SLOW = 0x00, 326 327 SETFEATURES_WC_ON = 0x02, /* Enable write cache */ 328 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */ 329 330 /* Enable/Disable Automatic Acoustic Management */ 331 SETFEATURES_AAM_ON = 0x42, 332 SETFEATURES_AAM_OFF = 0xC2, 333 334 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */ 335 336 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */ 337 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */ 338 339 /* SETFEATURE Sector counts for SATA features */ 340 SATA_FPDMA_OFFSET = 0x01, /* FPDMA non-zero buffer offsets */ 341 SATA_FPDMA_AA = 0x02, /* FPDMA Setup FIS Auto-Activate */ 342 SATA_DIPM = 0x03, /* Device Initiated Power Management */ 343 SATA_FPDMA_IN_ORDER = 0x04, /* FPDMA in-order data delivery */ 344 SATA_AN = 0x05, /* Asynchronous Notification */ 345 SATA_SSP = 0x06, /* Software Settings Preservation */ 346 347 /* feature values for SET_MAX */ 348 ATA_SET_MAX_ADDR = 0x00, 349 ATA_SET_MAX_PASSWD = 0x01, 350 ATA_SET_MAX_LOCK = 0x02, 351 ATA_SET_MAX_UNLOCK = 0x03, 352 ATA_SET_MAX_FREEZE_LOCK = 0x04, 353 354 /* feature values for DEVICE CONFIGURATION OVERLAY */ 355 ATA_DCO_RESTORE = 0xC0, 356 ATA_DCO_FREEZE_LOCK = 0xC1, 357 ATA_DCO_IDENTIFY = 0xC2, 358 ATA_DCO_SET = 0xC3, 359 360 /* feature values for SMART */ 361 ATA_SMART_ENABLE = 0xD8, 362 ATA_SMART_READ_VALUES = 0xD0, 363 ATA_SMART_READ_THRESHOLDS = 0xD1, 364 365 /* feature values for Data Set Management */ 366 ATA_DSM_TRIM = 0x01, 367 368 /* password used in LBA Mid / LBA High for executing SMART commands */ 369 ATA_SMART_LBAM_PASS = 0x4F, 370 ATA_SMART_LBAH_PASS = 0xC2, 371 372 /* ATAPI stuff */ 373 ATAPI_PKT_DMA = (1 << 0), 374 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir: 375 0=to device, 1=to host */ 376 ATAPI_CDB_LEN = 16, 377 378 /* PMP stuff */ 379 SATA_PMP_MAX_PORTS = 15, 380 SATA_PMP_CTRL_PORT = 15, 381 382 SATA_PMP_GSCR_DWORDS = 128, 383 SATA_PMP_GSCR_PROD_ID = 0, 384 SATA_PMP_GSCR_REV = 1, 385 SATA_PMP_GSCR_PORT_INFO = 2, 386 SATA_PMP_GSCR_ERROR = 32, 387 SATA_PMP_GSCR_ERROR_EN = 33, 388 SATA_PMP_GSCR_FEAT = 64, 389 SATA_PMP_GSCR_FEAT_EN = 96, 390 391 SATA_PMP_PSCR_STATUS = 0, 392 SATA_PMP_PSCR_ERROR = 1, 393 SATA_PMP_PSCR_CONTROL = 2, 394 395 SATA_PMP_FEAT_BIST = (1 << 0), 396 SATA_PMP_FEAT_PMREQ = (1 << 1), 397 SATA_PMP_FEAT_DYNSSC = (1 << 2), 398 SATA_PMP_FEAT_NOTIFY = (1 << 3), 399 400 /* cable types */ 401 ATA_CBL_NONE = 0, 402 ATA_CBL_PATA40 = 1, 403 ATA_CBL_PATA80 = 2, 404 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */ 405 ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */ 406 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */ 407 ATA_CBL_SATA = 6, 408 409 /* SATA Status and Control Registers */ 410 SCR_STATUS = 0, 411 SCR_ERROR = 1, 412 SCR_CONTROL = 2, 413 SCR_ACTIVE = 3, 414 SCR_NOTIFICATION = 4, 415 416 /* SError bits */ 417 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */ 418 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */ 419 SERR_DATA = (1 << 8), /* unrecovered data error */ 420 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */ 421 SERR_PROTOCOL = (1 << 10), /* protocol violation */ 422 SERR_INTERNAL = (1 << 11), /* host internal error */ 423 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */ 424 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */ 425 SERR_COMM_WAKE = (1 << 18), /* Comm wake */ 426 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */ 427 SERR_DISPARITY = (1 << 20), /* Disparity */ 428 SERR_CRC = (1 << 21), /* CRC error */ 429 SERR_HANDSHAKE = (1 << 22), /* Handshake error */ 430 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */ 431 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */ 432 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */ 433 SERR_DEV_XCHG = (1 << 26), /* device exchanged */ 434 435 /* struct ata_taskfile flags */ 436 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */ 437 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */ 438 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */ 439 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */ 440 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */ 441 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */ 442 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */ 443 444 /* protocol flags */ 445 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */ 446 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */ 447 ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA, 448 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */ 449 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */ 450 }; 451 452 enum ata_tf_protocols { 453 /* ATA taskfile protocols */ 454 ATA_PROT_UNKNOWN, /* unknown/invalid */ 455 ATA_PROT_NODATA, /* no data */ 456 ATA_PROT_PIO, /* PIO data xfer */ 457 ATA_PROT_DMA, /* DMA */ 458 ATA_PROT_NCQ, /* NCQ */ 459 ATAPI_PROT_NODATA, /* packet command, no data */ 460 ATAPI_PROT_PIO, /* packet command, PIO data xfer*/ 461 ATAPI_PROT_DMA, /* packet command with special DMA sauce */ 462 }; 463 464 enum ata_ioctls { 465 ATA_IOC_GET_IO32 = 0x309, 466 ATA_IOC_SET_IO32 = 0x324, 467 }; 468 469 /* core structures */ 470 471 struct ata_bmdma_prd { 472 __le32 addr; 473 __le32 flags_len; 474 }; 475 476 struct ata_taskfile { 477 unsigned long flags; /* ATA_TFLAG_xxx */ 478 u8 protocol; /* ATA_PROT_xxx */ 479 480 u8 ctl; /* control reg */ 481 482 u8 hob_feature; /* additional data */ 483 u8 hob_nsect; /* to support LBA48 */ 484 u8 hob_lbal; 485 u8 hob_lbam; 486 u8 hob_lbah; 487 488 u8 feature; 489 u8 nsect; 490 u8 lbal; 491 u8 lbam; 492 u8 lbah; 493 494 u8 device; 495 496 u8 command; /* IO operation */ 497 }; 498 499 /* 500 * protocol tests 501 */ 502 static inline unsigned int ata_prot_flags(u8 prot) 503 { 504 switch (prot) { 505 case ATA_PROT_NODATA: 506 return 0; 507 case ATA_PROT_PIO: 508 return ATA_PROT_FLAG_PIO; 509 case ATA_PROT_DMA: 510 return ATA_PROT_FLAG_DMA; 511 case ATA_PROT_NCQ: 512 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ; 513 case ATAPI_PROT_NODATA: 514 return ATA_PROT_FLAG_ATAPI; 515 case ATAPI_PROT_PIO: 516 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO; 517 case ATAPI_PROT_DMA: 518 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA; 519 } 520 return 0; 521 } 522 523 static inline int ata_is_atapi(u8 prot) 524 { 525 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI; 526 } 527 528 static inline int ata_is_nodata(u8 prot) 529 { 530 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA); 531 } 532 533 static inline int ata_is_pio(u8 prot) 534 { 535 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO; 536 } 537 538 static inline int ata_is_dma(u8 prot) 539 { 540 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA; 541 } 542 543 static inline int ata_is_ncq(u8 prot) 544 { 545 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ; 546 } 547 548 static inline int ata_is_data(u8 prot) 549 { 550 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA; 551 } 552 553 /* 554 * id tests 555 */ 556 #define ata_id_is_ata(id) (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0) 557 #define ata_id_has_lba(id) ((id)[ATA_ID_CAPABILITY] & (1 << 9)) 558 #define ata_id_has_dma(id) ((id)[ATA_ID_CAPABILITY] & (1 << 8)) 559 #define ata_id_has_ncq(id) ((id)[76] & (1 << 8)) 560 #define ata_id_queue_depth(id) (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1) 561 #define ata_id_removeable(id) ((id)[ATA_ID_CONFIG] & (1 << 7)) 562 #define ata_id_has_atapi_AN(id) \ 563 ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \ 564 ((id)[78] & (1 << 5)) ) 565 #define ata_id_has_fpdma_aa(id) \ 566 ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \ 567 ((id)[78] & (1 << 2)) ) 568 #define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10)) 569 #define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11)) 570 #define ata_id_u32(id,n) \ 571 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)])) 572 #define ata_id_u64(id,n) \ 573 ( ((u64) (id)[(n) + 3] << 48) | \ 574 ((u64) (id)[(n) + 2] << 32) | \ 575 ((u64) (id)[(n) + 1] << 16) | \ 576 ((u64) (id)[(n) + 0]) ) 577 578 #define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20) 579 580 static inline bool ata_id_has_hipm(const u16 *id) 581 { 582 u16 val = id[76]; 583 584 if (val == 0 || val == 0xffff) 585 return false; 586 587 return val & (1 << 9); 588 } 589 590 static inline bool ata_id_has_dipm(const u16 *id) 591 { 592 u16 val = id[78]; 593 594 if (val == 0 || val == 0xffff) 595 return false; 596 597 return val & (1 << 3); 598 } 599 600 601 static inline int ata_id_has_fua(const u16 *id) 602 { 603 if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000) 604 return 0; 605 return id[ATA_ID_CFSSE] & (1 << 6); 606 } 607 608 static inline int ata_id_has_flush(const u16 *id) 609 { 610 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 611 return 0; 612 return id[ATA_ID_COMMAND_SET_2] & (1 << 12); 613 } 614 615 static inline int ata_id_flush_enabled(const u16 *id) 616 { 617 if (ata_id_has_flush(id) == 0) 618 return 0; 619 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 620 return 0; 621 return id[ATA_ID_CFS_ENABLE_2] & (1 << 12); 622 } 623 624 static inline int ata_id_has_flush_ext(const u16 *id) 625 { 626 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 627 return 0; 628 return id[ATA_ID_COMMAND_SET_2] & (1 << 13); 629 } 630 631 static inline int ata_id_flush_ext_enabled(const u16 *id) 632 { 633 if (ata_id_has_flush_ext(id) == 0) 634 return 0; 635 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 636 return 0; 637 /* 638 * some Maxtor disks have bit 13 defined incorrectly 639 * so check bit 10 too 640 */ 641 return (id[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400; 642 } 643 644 static inline u32 ata_id_logical_sector_size(const u16 *id) 645 { 646 /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128. 647 * IDENTIFY DEVICE data, word 117-118. 648 * 0xd000 ignores bit 13 (logical:physical > 1) 649 */ 650 if ((id[ATA_ID_SECTOR_SIZE] & 0xd000) == 0x5000) 651 return (((id[ATA_ID_LOGICAL_SECTOR_SIZE+1] << 16) 652 + id[ATA_ID_LOGICAL_SECTOR_SIZE]) * sizeof(u16)) ; 653 return ATA_SECT_SIZE; 654 } 655 656 static inline u8 ata_id_log2_per_physical_sector(const u16 *id) 657 { 658 /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128. 659 * IDENTIFY DEVICE data, word 106. 660 * 0xe000 ignores bit 12 (logical sector > 512 bytes) 661 */ 662 if ((id[ATA_ID_SECTOR_SIZE] & 0xe000) == 0x6000) 663 return (id[ATA_ID_SECTOR_SIZE] & 0xf); 664 return 0; 665 } 666 667 /* Offset of logical sectors relative to physical sectors. 668 * 669 * If device has more than one logical sector per physical sector 670 * (aka 512 byte emulation), vendors might offset the "sector 0" address 671 * so sector 63 is "naturally aligned" - e.g. FAT partition table. 672 * This avoids Read/Mod/Write penalties when using FAT partition table 673 * and updating "well aligned" (FS perspective) physical sectors on every 674 * transaction. 675 */ 676 static inline u16 ata_id_logical_sector_offset(const u16 *id, 677 u8 log2_per_phys) 678 { 679 u16 word_209 = id[209]; 680 681 if ((log2_per_phys > 1) && (word_209 & 0xc000) == 0x4000) { 682 u16 first = word_209 & 0x3fff; 683 if (first > 0) 684 return (1 << log2_per_phys) - first; 685 } 686 return 0; 687 } 688 689 static inline int ata_id_has_lba48(const u16 *id) 690 { 691 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 692 return 0; 693 if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2)) 694 return 0; 695 return id[ATA_ID_COMMAND_SET_2] & (1 << 10); 696 } 697 698 static inline int ata_id_lba48_enabled(const u16 *id) 699 { 700 if (ata_id_has_lba48(id) == 0) 701 return 0; 702 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 703 return 0; 704 return id[ATA_ID_CFS_ENABLE_2] & (1 << 10); 705 } 706 707 static inline int ata_id_hpa_enabled(const u16 *id) 708 { 709 /* Yes children, word 83 valid bits cover word 82 data */ 710 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 711 return 0; 712 /* And 87 covers 85-87 */ 713 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 714 return 0; 715 /* Check command sets enabled as well as supported */ 716 if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0) 717 return 0; 718 return id[ATA_ID_COMMAND_SET_1] & (1 << 10); 719 } 720 721 static inline int ata_id_has_wcache(const u16 *id) 722 { 723 /* Yes children, word 83 valid bits cover word 82 data */ 724 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 725 return 0; 726 return id[ATA_ID_COMMAND_SET_1] & (1 << 5); 727 } 728 729 static inline int ata_id_has_pm(const u16 *id) 730 { 731 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 732 return 0; 733 return id[ATA_ID_COMMAND_SET_1] & (1 << 3); 734 } 735 736 static inline int ata_id_rahead_enabled(const u16 *id) 737 { 738 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 739 return 0; 740 return id[ATA_ID_CFS_ENABLE_1] & (1 << 6); 741 } 742 743 static inline int ata_id_wcache_enabled(const u16 *id) 744 { 745 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 746 return 0; 747 return id[ATA_ID_CFS_ENABLE_1] & (1 << 5); 748 } 749 750 /** 751 * ata_id_major_version - get ATA level of drive 752 * @id: Identify data 753 * 754 * Caveats: 755 * ATA-1 considers identify optional 756 * ATA-2 introduces mandatory identify 757 * ATA-3 introduces word 80 and accurate reporting 758 * 759 * The practical impact of this is that ata_id_major_version cannot 760 * reliably report on drives below ATA3. 761 */ 762 763 static inline unsigned int ata_id_major_version(const u16 *id) 764 { 765 unsigned int mver; 766 767 if (id[ATA_ID_MAJOR_VER] == 0xFFFF) 768 return 0; 769 770 for (mver = 14; mver >= 1; mver--) 771 if (id[ATA_ID_MAJOR_VER] & (1 << mver)) 772 break; 773 return mver; 774 } 775 776 static inline int ata_id_is_sata(const u16 *id) 777 { 778 /* 779 * See if word 93 is 0 AND drive is at least ATA-5 compatible 780 * verifying that word 80 by casting it to a signed type -- 781 * this trick allows us to filter out the reserved values of 782 * 0x0000 and 0xffff along with the earlier ATA revisions... 783 */ 784 if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020) 785 return 1; 786 return 0; 787 } 788 789 static inline int ata_id_has_tpm(const u16 *id) 790 { 791 /* The TPM bits are only valid on ATA8 */ 792 if (ata_id_major_version(id) < 8) 793 return 0; 794 if ((id[48] & 0xC000) != 0x4000) 795 return 0; 796 return id[48] & (1 << 0); 797 } 798 799 static inline int ata_id_has_dword_io(const u16 *id) 800 { 801 /* ATA 8 reuses this flag for "trusted" computing */ 802 if (ata_id_major_version(id) > 7) 803 return 0; 804 if (id[ATA_ID_DWORD_IO] & (1 << 0)) 805 return 1; 806 return 0; 807 } 808 809 static inline int ata_id_has_unload(const u16 *id) 810 { 811 if (ata_id_major_version(id) >= 7 && 812 (id[ATA_ID_CFSSE] & 0xC000) == 0x4000 && 813 id[ATA_ID_CFSSE] & (1 << 13)) 814 return 1; 815 return 0; 816 } 817 818 static inline int ata_id_form_factor(const u16 *id) 819 { 820 u16 val = id[168]; 821 822 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff) 823 return 0; 824 825 val &= 0xf; 826 827 if (val > 5) 828 return 0; 829 830 return val; 831 } 832 833 static inline int ata_id_rotation_rate(const u16 *id) 834 { 835 u16 val = id[217]; 836 837 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff) 838 return 0; 839 840 if (val > 1 && val < 0x401) 841 return 0; 842 843 return val; 844 } 845 846 static inline int ata_id_has_trim(const u16 *id) 847 { 848 if (ata_id_major_version(id) >= 7 && 849 (id[ATA_ID_DATA_SET_MGMT] & 1)) 850 return 1; 851 return 0; 852 } 853 854 static inline int ata_id_has_zero_after_trim(const u16 *id) 855 { 856 /* DSM supported, deterministic read, and read zero after trim set */ 857 if (ata_id_has_trim(id) && 858 (id[ATA_ID_ADDITIONAL_SUPP] & 0x4020) == 0x4020) 859 return 1; 860 861 return 0; 862 } 863 864 static inline int ata_id_current_chs_valid(const u16 *id) 865 { 866 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command 867 has not been issued to the device then the values of 868 id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */ 869 return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */ 870 id[ATA_ID_CUR_CYLS] && /* cylinders in current translation */ 871 id[ATA_ID_CUR_HEADS] && /* heads in current translation */ 872 id[ATA_ID_CUR_HEADS] <= 16 && 873 id[ATA_ID_CUR_SECTORS]; /* sectors in current translation */ 874 } 875 876 static inline int ata_id_is_cfa(const u16 *id) 877 { 878 if ((id[ATA_ID_CONFIG] == 0x848A) || /* Traditional CF */ 879 (id[ATA_ID_CONFIG] == 0x844A)) /* Delkin Devices CF */ 880 return 1; 881 /* 882 * CF specs don't require specific value in the word 0 anymore and yet 883 * they forbid to report the ATA version in the word 80 and require the 884 * CFA feature set support to be indicated in the word 83 in this case. 885 * Unfortunately, some cards only follow either of this requirements, 886 * and while those that don't indicate CFA feature support need some 887 * sort of quirk list, it seems impractical for the ones that do... 888 */ 889 if ((id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004) 890 return 1; 891 return 0; 892 } 893 894 static inline int ata_id_is_ssd(const u16 *id) 895 { 896 return id[ATA_ID_ROT_SPEED] == 0x01; 897 } 898 899 static inline int ata_id_pio_need_iordy(const u16 *id, const u8 pio) 900 { 901 /* CF spec. r4.1 Table 22 says no IORDY on PIO5 and PIO6. */ 902 if (pio > 4 && ata_id_is_cfa(id)) 903 return 0; 904 /* For PIO3 and higher it is mandatory. */ 905 if (pio > 2) 906 return 1; 907 /* Turn it on when possible. */ 908 if (ata_id_has_iordy(id)) 909 return 1; 910 return 0; 911 } 912 913 static inline int ata_drive_40wire(const u16 *dev_id) 914 { 915 if (ata_id_is_sata(dev_id)) 916 return 0; /* SATA */ 917 if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000) 918 return 0; /* 80 wire */ 919 return 1; 920 } 921 922 static inline int ata_drive_40wire_relaxed(const u16 *dev_id) 923 { 924 if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000) 925 return 0; /* 80 wire */ 926 return 1; 927 } 928 929 static inline int atapi_cdb_len(const u16 *dev_id) 930 { 931 u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3; 932 switch (tmp) { 933 case 0: return 12; 934 case 1: return 16; 935 default: return -1; 936 } 937 } 938 939 static inline int atapi_command_packet_set(const u16 *dev_id) 940 { 941 return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f; 942 } 943 944 static inline int atapi_id_dmadir(const u16 *dev_id) 945 { 946 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000); 947 } 948 949 /* 950 * ata_id_is_lba_capacity_ok() performs a sanity check on 951 * the claimed LBA capacity value for the device. 952 * 953 * Returns 1 if LBA capacity looks sensible, 0 otherwise. 954 * 955 * It is called only once for each device. 956 */ 957 static inline int ata_id_is_lba_capacity_ok(u16 *id) 958 { 959 unsigned long lba_sects, chs_sects, head, tail; 960 961 /* No non-LBA info .. so valid! */ 962 if (id[ATA_ID_CYLS] == 0) 963 return 1; 964 965 lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY); 966 967 /* 968 * The ATA spec tells large drives to return 969 * C/H/S = 16383/16/63 independent of their size. 970 * Some drives can be jumpered to use 15 heads instead of 16. 971 * Some drives can be jumpered to use 4092 cyls instead of 16383. 972 */ 973 if ((id[ATA_ID_CYLS] == 16383 || 974 (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) && 975 id[ATA_ID_SECTORS] == 63 && 976 (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) && 977 (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS])) 978 return 1; 979 980 chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS]; 981 982 /* perform a rough sanity check on lba_sects: within 10% is OK */ 983 if (lba_sects - chs_sects < chs_sects/10) 984 return 1; 985 986 /* some drives have the word order reversed */ 987 head = (lba_sects >> 16) & 0xffff; 988 tail = lba_sects & 0xffff; 989 lba_sects = head | (tail << 16); 990 991 if (lba_sects - chs_sects < chs_sects/10) { 992 *(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects); 993 return 1; /* LBA capacity is (now) good */ 994 } 995 996 return 0; /* LBA capacity value may be bad */ 997 } 998 999 static inline void ata_id_to_hd_driveid(u16 *id) 1000 { 1001 #ifdef __BIG_ENDIAN 1002 /* accessed in struct hd_driveid as 8-bit values */ 1003 id[ATA_ID_MAX_MULTSECT] = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]); 1004 id[ATA_ID_CAPABILITY] = __cpu_to_le16(id[ATA_ID_CAPABILITY]); 1005 id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]); 1006 id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]); 1007 id[ATA_ID_MULTSECT] = __cpu_to_le16(id[ATA_ID_MULTSECT]); 1008 1009 /* as 32-bit values */ 1010 *(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY); 1011 *(u32 *)&id[ATA_ID_SPG] = ata_id_u32(id, ATA_ID_SPG); 1012 1013 /* as 64-bit value */ 1014 *(u64 *)&id[ATA_ID_LBA_CAPACITY_2] = 1015 ata_id_u64(id, ATA_ID_LBA_CAPACITY_2); 1016 #endif 1017 } 1018 1019 /* 1020 * Write LBA Range Entries to the buffer that will cover the extent from 1021 * sector to sector + count. This is used for TRIM and for ADD LBA(S) 1022 * TO NV CACHE PINNED SET. 1023 */ 1024 static inline unsigned ata_set_lba_range_entries(void *_buffer, 1025 unsigned buf_size, u64 sector, unsigned long count) 1026 { 1027 __le64 *buffer = _buffer; 1028 unsigned i = 0, used_bytes; 1029 1030 while (i < buf_size / 8 ) { /* 6-byte LBA + 2-byte range per entry */ 1031 u64 entry = sector | 1032 ((u64)(count > 0xffff ? 0xffff : count) << 48); 1033 buffer[i++] = __cpu_to_le64(entry); 1034 if (count <= 0xffff) 1035 break; 1036 count -= 0xffff; 1037 sector += 0xffff; 1038 } 1039 1040 used_bytes = ALIGN(i * 8, 512); 1041 memset(buffer + i, 0, used_bytes - i * 8); 1042 return used_bytes; 1043 } 1044 1045 static inline int is_multi_taskfile(struct ata_taskfile *tf) 1046 { 1047 return (tf->command == ATA_CMD_READ_MULTI) || 1048 (tf->command == ATA_CMD_WRITE_MULTI) || 1049 (tf->command == ATA_CMD_READ_MULTI_EXT) || 1050 (tf->command == ATA_CMD_WRITE_MULTI_EXT) || 1051 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); 1052 } 1053 1054 static inline int ata_ok(u8 status) 1055 { 1056 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR)) 1057 == ATA_DRDY); 1058 } 1059 1060 static inline int lba_28_ok(u64 block, u32 n_block) 1061 { 1062 /* check the ending block number: must be LESS THAN 0x0fffffff */ 1063 return ((block + n_block) < ((1 << 28) - 1)) && (n_block <= 256); 1064 } 1065 1066 static inline int lba_48_ok(u64 block, u32 n_block) 1067 { 1068 /* check the ending block number */ 1069 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536); 1070 } 1071 1072 #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff) 1073 #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16) 1074 #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff) 1075 #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf) 1076 1077 #endif /* __LINUX_ATA_H__ */ 1078