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_LAST_LUN = 126, 98 ATA_ID_DLF = 128, 99 ATA_ID_CSFO = 129, 100 ATA_ID_CFA_POWER = 160, 101 ATA_ID_CFA_KEY_MGMT = 162, 102 ATA_ID_CFA_MODES = 163, 103 ATA_ID_DATA_SET_MGMT = 169, 104 ATA_ID_ROT_SPEED = 217, 105 ATA_ID_PIO4 = (1 << 1), 106 107 ATA_ID_SERNO_LEN = 20, 108 ATA_ID_FW_REV_LEN = 8, 109 ATA_ID_PROD_LEN = 40, 110 ATA_ID_WWN_LEN = 8, 111 112 ATA_PCI_CTL_OFS = 2, 113 114 ATA_PIO0 = (1 << 0), 115 ATA_PIO1 = ATA_PIO0 | (1 << 1), 116 ATA_PIO2 = ATA_PIO1 | (1 << 2), 117 ATA_PIO3 = ATA_PIO2 | (1 << 3), 118 ATA_PIO4 = ATA_PIO3 | (1 << 4), 119 ATA_PIO5 = ATA_PIO4 | (1 << 5), 120 ATA_PIO6 = ATA_PIO5 | (1 << 6), 121 122 ATA_PIO4_ONLY = (1 << 4), 123 124 ATA_SWDMA0 = (1 << 0), 125 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1), 126 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2), 127 128 ATA_SWDMA2_ONLY = (1 << 2), 129 130 ATA_MWDMA0 = (1 << 0), 131 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1), 132 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2), 133 ATA_MWDMA3 = ATA_MWDMA2 | (1 << 3), 134 ATA_MWDMA4 = ATA_MWDMA3 | (1 << 4), 135 136 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2), 137 ATA_MWDMA2_ONLY = (1 << 2), 138 139 ATA_UDMA0 = (1 << 0), 140 ATA_UDMA1 = ATA_UDMA0 | (1 << 1), 141 ATA_UDMA2 = ATA_UDMA1 | (1 << 2), 142 ATA_UDMA3 = ATA_UDMA2 | (1 << 3), 143 ATA_UDMA4 = ATA_UDMA3 | (1 << 4), 144 ATA_UDMA5 = ATA_UDMA4 | (1 << 5), 145 ATA_UDMA6 = ATA_UDMA5 | (1 << 6), 146 ATA_UDMA7 = ATA_UDMA6 | (1 << 7), 147 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */ 148 149 ATA_UDMA24_ONLY = (1 << 2) | (1 << 4), 150 151 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */ 152 153 /* DMA-related */ 154 ATA_PRD_SZ = 8, 155 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ), 156 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */ 157 158 ATA_DMA_TABLE_OFS = 4, 159 ATA_DMA_STATUS = 2, 160 ATA_DMA_CMD = 0, 161 ATA_DMA_WR = (1 << 3), 162 ATA_DMA_START = (1 << 0), 163 ATA_DMA_INTR = (1 << 2), 164 ATA_DMA_ERR = (1 << 1), 165 ATA_DMA_ACTIVE = (1 << 0), 166 167 /* bits in ATA command block registers */ 168 ATA_HOB = (1 << 7), /* LBA48 selector */ 169 ATA_NIEN = (1 << 1), /* disable-irq flag */ 170 ATA_LBA = (1 << 6), /* LBA28 selector */ 171 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */ 172 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */ 173 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */ 174 ATA_BUSY = (1 << 7), /* BSY status bit */ 175 ATA_DRDY = (1 << 6), /* device ready */ 176 ATA_DF = (1 << 5), /* device fault */ 177 ATA_DSC = (1 << 4), /* drive seek complete */ 178 ATA_DRQ = (1 << 3), /* data request i/o */ 179 ATA_CORR = (1 << 2), /* corrected data error */ 180 ATA_IDX = (1 << 1), /* index */ 181 ATA_ERR = (1 << 0), /* have an error */ 182 ATA_SRST = (1 << 2), /* software reset */ 183 ATA_ICRC = (1 << 7), /* interface CRC error */ 184 ATA_BBK = ATA_ICRC, /* pre-EIDE: block marked bad */ 185 ATA_UNC = (1 << 6), /* uncorrectable media error */ 186 ATA_MC = (1 << 5), /* media changed */ 187 ATA_IDNF = (1 << 4), /* ID not found */ 188 ATA_MCR = (1 << 3), /* media change requested */ 189 ATA_ABORTED = (1 << 2), /* command aborted */ 190 ATA_TRK0NF = (1 << 1), /* track 0 not found */ 191 ATA_AMNF = (1 << 0), /* address mark not found */ 192 ATAPI_LFS = 0xF0, /* last failed sense */ 193 ATAPI_EOM = ATA_TRK0NF, /* end of media */ 194 ATAPI_ILI = ATA_AMNF, /* illegal length indication */ 195 ATAPI_IO = (1 << 1), 196 ATAPI_COD = (1 << 0), 197 198 /* ATA command block registers */ 199 ATA_REG_DATA = 0x00, 200 ATA_REG_ERR = 0x01, 201 ATA_REG_NSECT = 0x02, 202 ATA_REG_LBAL = 0x03, 203 ATA_REG_LBAM = 0x04, 204 ATA_REG_LBAH = 0x05, 205 ATA_REG_DEVICE = 0x06, 206 ATA_REG_STATUS = 0x07, 207 208 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */ 209 ATA_REG_CMD = ATA_REG_STATUS, 210 ATA_REG_BYTEL = ATA_REG_LBAM, 211 ATA_REG_BYTEH = ATA_REG_LBAH, 212 ATA_REG_DEVSEL = ATA_REG_DEVICE, 213 ATA_REG_IRQ = ATA_REG_NSECT, 214 215 /* ATA device commands */ 216 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */ 217 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */ 218 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */ 219 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */ 220 ATA_CMD_EDD = 0x90, /* execute device diagnostic */ 221 ATA_CMD_DOWNLOAD_MICRO = 0x92, 222 ATA_CMD_NOP = 0x00, 223 ATA_CMD_FLUSH = 0xE7, 224 ATA_CMD_FLUSH_EXT = 0xEA, 225 ATA_CMD_ID_ATA = 0xEC, 226 ATA_CMD_ID_ATAPI = 0xA1, 227 ATA_CMD_SERVICE = 0xA2, 228 ATA_CMD_READ = 0xC8, 229 ATA_CMD_READ_EXT = 0x25, 230 ATA_CMD_READ_QUEUED = 0x26, 231 ATA_CMD_READ_STREAM_EXT = 0x2B, 232 ATA_CMD_READ_STREAM_DMA_EXT = 0x2A, 233 ATA_CMD_WRITE = 0xCA, 234 ATA_CMD_WRITE_EXT = 0x35, 235 ATA_CMD_WRITE_QUEUED = 0x36, 236 ATA_CMD_WRITE_STREAM_EXT = 0x3B, 237 ATA_CMD_WRITE_STREAM_DMA_EXT = 0x3A, 238 ATA_CMD_WRITE_FUA_EXT = 0x3D, 239 ATA_CMD_WRITE_QUEUED_FUA_EXT = 0x3E, 240 ATA_CMD_FPDMA_READ = 0x60, 241 ATA_CMD_FPDMA_WRITE = 0x61, 242 ATA_CMD_PIO_READ = 0x20, 243 ATA_CMD_PIO_READ_EXT = 0x24, 244 ATA_CMD_PIO_WRITE = 0x30, 245 ATA_CMD_PIO_WRITE_EXT = 0x34, 246 ATA_CMD_READ_MULTI = 0xC4, 247 ATA_CMD_READ_MULTI_EXT = 0x29, 248 ATA_CMD_WRITE_MULTI = 0xC5, 249 ATA_CMD_WRITE_MULTI_EXT = 0x39, 250 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE, 251 ATA_CMD_SET_FEATURES = 0xEF, 252 ATA_CMD_SET_MULTI = 0xC6, 253 ATA_CMD_PACKET = 0xA0, 254 ATA_CMD_VERIFY = 0x40, 255 ATA_CMD_VERIFY_EXT = 0x42, 256 ATA_CMD_WRITE_UNCORR_EXT = 0x45, 257 ATA_CMD_STANDBYNOW1 = 0xE0, 258 ATA_CMD_IDLEIMMEDIATE = 0xE1, 259 ATA_CMD_SLEEP = 0xE6, 260 ATA_CMD_INIT_DEV_PARAMS = 0x91, 261 ATA_CMD_READ_NATIVE_MAX = 0xF8, 262 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27, 263 ATA_CMD_SET_MAX = 0xF9, 264 ATA_CMD_SET_MAX_EXT = 0x37, 265 ATA_CMD_READ_LOG_EXT = 0x2F, 266 ATA_CMD_WRITE_LOG_EXT = 0x3F, 267 ATA_CMD_READ_LOG_DMA_EXT = 0x47, 268 ATA_CMD_WRITE_LOG_DMA_EXT = 0x57, 269 ATA_CMD_TRUSTED_RCV = 0x5C, 270 ATA_CMD_TRUSTED_RCV_DMA = 0x5D, 271 ATA_CMD_TRUSTED_SND = 0x5E, 272 ATA_CMD_TRUSTED_SND_DMA = 0x5F, 273 ATA_CMD_PMP_READ = 0xE4, 274 ATA_CMD_PMP_WRITE = 0xE8, 275 ATA_CMD_CONF_OVERLAY = 0xB1, 276 ATA_CMD_SEC_SET_PASS = 0xF1, 277 ATA_CMD_SEC_UNLOCK = 0xF2, 278 ATA_CMD_SEC_ERASE_PREP = 0xF3, 279 ATA_CMD_SEC_ERASE_UNIT = 0xF4, 280 ATA_CMD_SEC_FREEZE_LOCK = 0xF5, 281 ATA_CMD_SEC_DISABLE_PASS = 0xF6, 282 ATA_CMD_CONFIG_STREAM = 0x51, 283 ATA_CMD_SMART = 0xB0, 284 ATA_CMD_MEDIA_LOCK = 0xDE, 285 ATA_CMD_MEDIA_UNLOCK = 0xDF, 286 ATA_CMD_DSM = 0x06, 287 ATA_CMD_CHK_MED_CRD_TYP = 0xD1, 288 ATA_CMD_CFA_REQ_EXT_ERR = 0x03, 289 ATA_CMD_CFA_WRITE_NE = 0x38, 290 ATA_CMD_CFA_TRANS_SECT = 0x87, 291 ATA_CMD_CFA_ERASE = 0xC0, 292 ATA_CMD_CFA_WRITE_MULT_NE = 0xCD, 293 /* marked obsolete in the ATA/ATAPI-7 spec */ 294 ATA_CMD_RESTORE = 0x10, 295 296 /* READ_LOG_EXT pages */ 297 ATA_LOG_SATA_NCQ = 0x10, 298 ATA_LOG_SATA_ID_DEV_DATA = 0x30, 299 ATA_LOG_SATA_SETTINGS = 0x08, 300 ATA_LOG_DEVSLP_OFFSET = 0x30, 301 ATA_LOG_DEVSLP_SIZE = 0x08, 302 ATA_LOG_DEVSLP_MDAT = 0x00, 303 ATA_LOG_DEVSLP_MDAT_MASK = 0x1F, 304 ATA_LOG_DEVSLP_DETO = 0x01, 305 ATA_LOG_DEVSLP_VALID = 0x07, 306 ATA_LOG_DEVSLP_VALID_MASK = 0x80, 307 308 /* READ/WRITE LONG (obsolete) */ 309 ATA_CMD_READ_LONG = 0x22, 310 ATA_CMD_READ_LONG_ONCE = 0x23, 311 ATA_CMD_WRITE_LONG = 0x32, 312 ATA_CMD_WRITE_LONG_ONCE = 0x33, 313 314 /* SETFEATURES stuff */ 315 SETFEATURES_XFER = 0x03, 316 XFER_UDMA_7 = 0x47, 317 XFER_UDMA_6 = 0x46, 318 XFER_UDMA_5 = 0x45, 319 XFER_UDMA_4 = 0x44, 320 XFER_UDMA_3 = 0x43, 321 XFER_UDMA_2 = 0x42, 322 XFER_UDMA_1 = 0x41, 323 XFER_UDMA_0 = 0x40, 324 XFER_MW_DMA_4 = 0x24, /* CFA only */ 325 XFER_MW_DMA_3 = 0x23, /* CFA only */ 326 XFER_MW_DMA_2 = 0x22, 327 XFER_MW_DMA_1 = 0x21, 328 XFER_MW_DMA_0 = 0x20, 329 XFER_SW_DMA_2 = 0x12, 330 XFER_SW_DMA_1 = 0x11, 331 XFER_SW_DMA_0 = 0x10, 332 XFER_PIO_6 = 0x0E, /* CFA only */ 333 XFER_PIO_5 = 0x0D, /* CFA only */ 334 XFER_PIO_4 = 0x0C, 335 XFER_PIO_3 = 0x0B, 336 XFER_PIO_2 = 0x0A, 337 XFER_PIO_1 = 0x09, 338 XFER_PIO_0 = 0x08, 339 XFER_PIO_SLOW = 0x00, 340 341 SETFEATURES_WC_ON = 0x02, /* Enable write cache */ 342 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */ 343 344 /* Enable/Disable Automatic Acoustic Management */ 345 SETFEATURES_AAM_ON = 0x42, 346 SETFEATURES_AAM_OFF = 0xC2, 347 348 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */ 349 350 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */ 351 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */ 352 353 /* SETFEATURE Sector counts for SATA features */ 354 SATA_FPDMA_OFFSET = 0x01, /* FPDMA non-zero buffer offsets */ 355 SATA_FPDMA_AA = 0x02, /* FPDMA Setup FIS Auto-Activate */ 356 SATA_DIPM = 0x03, /* Device Initiated Power Management */ 357 SATA_FPDMA_IN_ORDER = 0x04, /* FPDMA in-order data delivery */ 358 SATA_AN = 0x05, /* Asynchronous Notification */ 359 SATA_SSP = 0x06, /* Software Settings Preservation */ 360 SATA_DEVSLP = 0x09, /* Device Sleep */ 361 362 /* feature values for SET_MAX */ 363 ATA_SET_MAX_ADDR = 0x00, 364 ATA_SET_MAX_PASSWD = 0x01, 365 ATA_SET_MAX_LOCK = 0x02, 366 ATA_SET_MAX_UNLOCK = 0x03, 367 ATA_SET_MAX_FREEZE_LOCK = 0x04, 368 369 /* feature values for DEVICE CONFIGURATION OVERLAY */ 370 ATA_DCO_RESTORE = 0xC0, 371 ATA_DCO_FREEZE_LOCK = 0xC1, 372 ATA_DCO_IDENTIFY = 0xC2, 373 ATA_DCO_SET = 0xC3, 374 375 /* feature values for SMART */ 376 ATA_SMART_ENABLE = 0xD8, 377 ATA_SMART_READ_VALUES = 0xD0, 378 ATA_SMART_READ_THRESHOLDS = 0xD1, 379 380 /* feature values for Data Set Management */ 381 ATA_DSM_TRIM = 0x01, 382 383 /* password used in LBA Mid / LBA High for executing SMART commands */ 384 ATA_SMART_LBAM_PASS = 0x4F, 385 ATA_SMART_LBAH_PASS = 0xC2, 386 387 /* ATAPI stuff */ 388 ATAPI_PKT_DMA = (1 << 0), 389 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir: 390 0=to device, 1=to host */ 391 ATAPI_CDB_LEN = 16, 392 393 /* PMP stuff */ 394 SATA_PMP_MAX_PORTS = 15, 395 SATA_PMP_CTRL_PORT = 15, 396 397 SATA_PMP_GSCR_DWORDS = 128, 398 SATA_PMP_GSCR_PROD_ID = 0, 399 SATA_PMP_GSCR_REV = 1, 400 SATA_PMP_GSCR_PORT_INFO = 2, 401 SATA_PMP_GSCR_ERROR = 32, 402 SATA_PMP_GSCR_ERROR_EN = 33, 403 SATA_PMP_GSCR_FEAT = 64, 404 SATA_PMP_GSCR_FEAT_EN = 96, 405 406 SATA_PMP_PSCR_STATUS = 0, 407 SATA_PMP_PSCR_ERROR = 1, 408 SATA_PMP_PSCR_CONTROL = 2, 409 410 SATA_PMP_FEAT_BIST = (1 << 0), 411 SATA_PMP_FEAT_PMREQ = (1 << 1), 412 SATA_PMP_FEAT_DYNSSC = (1 << 2), 413 SATA_PMP_FEAT_NOTIFY = (1 << 3), 414 415 /* cable types */ 416 ATA_CBL_NONE = 0, 417 ATA_CBL_PATA40 = 1, 418 ATA_CBL_PATA80 = 2, 419 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */ 420 ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */ 421 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */ 422 ATA_CBL_SATA = 6, 423 424 /* SATA Status and Control Registers */ 425 SCR_STATUS = 0, 426 SCR_ERROR = 1, 427 SCR_CONTROL = 2, 428 SCR_ACTIVE = 3, 429 SCR_NOTIFICATION = 4, 430 431 /* SError bits */ 432 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */ 433 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */ 434 SERR_DATA = (1 << 8), /* unrecovered data error */ 435 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */ 436 SERR_PROTOCOL = (1 << 10), /* protocol violation */ 437 SERR_INTERNAL = (1 << 11), /* host internal error */ 438 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */ 439 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */ 440 SERR_COMM_WAKE = (1 << 18), /* Comm wake */ 441 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */ 442 SERR_DISPARITY = (1 << 20), /* Disparity */ 443 SERR_CRC = (1 << 21), /* CRC error */ 444 SERR_HANDSHAKE = (1 << 22), /* Handshake error */ 445 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */ 446 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */ 447 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */ 448 SERR_DEV_XCHG = (1 << 26), /* device exchanged */ 449 450 /* struct ata_taskfile flags */ 451 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */ 452 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */ 453 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */ 454 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */ 455 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */ 456 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */ 457 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */ 458 459 /* protocol flags */ 460 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */ 461 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */ 462 ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA, 463 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */ 464 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */ 465 }; 466 467 enum ata_tf_protocols { 468 /* ATA taskfile protocols */ 469 ATA_PROT_UNKNOWN, /* unknown/invalid */ 470 ATA_PROT_NODATA, /* no data */ 471 ATA_PROT_PIO, /* PIO data xfer */ 472 ATA_PROT_DMA, /* DMA */ 473 ATA_PROT_NCQ, /* NCQ */ 474 ATAPI_PROT_NODATA, /* packet command, no data */ 475 ATAPI_PROT_PIO, /* packet command, PIO data xfer*/ 476 ATAPI_PROT_DMA, /* packet command with special DMA sauce */ 477 }; 478 479 enum ata_ioctls { 480 ATA_IOC_GET_IO32 = 0x309, 481 ATA_IOC_SET_IO32 = 0x324, 482 }; 483 484 /* core structures */ 485 486 struct ata_bmdma_prd { 487 __le32 addr; 488 __le32 flags_len; 489 }; 490 491 struct ata_taskfile { 492 unsigned long flags; /* ATA_TFLAG_xxx */ 493 u8 protocol; /* ATA_PROT_xxx */ 494 495 u8 ctl; /* control reg */ 496 497 u8 hob_feature; /* additional data */ 498 u8 hob_nsect; /* to support LBA48 */ 499 u8 hob_lbal; 500 u8 hob_lbam; 501 u8 hob_lbah; 502 503 u8 feature; 504 u8 nsect; 505 u8 lbal; 506 u8 lbam; 507 u8 lbah; 508 509 u8 device; 510 511 u8 command; /* IO operation */ 512 }; 513 514 /* 515 * protocol tests 516 */ 517 static inline unsigned int ata_prot_flags(u8 prot) 518 { 519 switch (prot) { 520 case ATA_PROT_NODATA: 521 return 0; 522 case ATA_PROT_PIO: 523 return ATA_PROT_FLAG_PIO; 524 case ATA_PROT_DMA: 525 return ATA_PROT_FLAG_DMA; 526 case ATA_PROT_NCQ: 527 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ; 528 case ATAPI_PROT_NODATA: 529 return ATA_PROT_FLAG_ATAPI; 530 case ATAPI_PROT_PIO: 531 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO; 532 case ATAPI_PROT_DMA: 533 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA; 534 } 535 return 0; 536 } 537 538 static inline int ata_is_atapi(u8 prot) 539 { 540 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI; 541 } 542 543 static inline int ata_is_nodata(u8 prot) 544 { 545 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA); 546 } 547 548 static inline int ata_is_pio(u8 prot) 549 { 550 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO; 551 } 552 553 static inline int ata_is_dma(u8 prot) 554 { 555 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA; 556 } 557 558 static inline int ata_is_ncq(u8 prot) 559 { 560 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ; 561 } 562 563 static inline int ata_is_data(u8 prot) 564 { 565 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA; 566 } 567 568 /* 569 * id tests 570 */ 571 #define ata_id_is_ata(id) (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0) 572 #define ata_id_has_lba(id) ((id)[ATA_ID_CAPABILITY] & (1 << 9)) 573 #define ata_id_has_dma(id) ((id)[ATA_ID_CAPABILITY] & (1 << 8)) 574 #define ata_id_has_ncq(id) ((id)[ATA_ID_SATA_CAPABILITY] & (1 << 8)) 575 #define ata_id_queue_depth(id) (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1) 576 #define ata_id_removeable(id) ((id)[ATA_ID_CONFIG] & (1 << 7)) 577 #define ata_id_has_atapi_AN(id) \ 578 ((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \ 579 ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \ 580 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 5))) 581 #define ata_id_has_fpdma_aa(id) \ 582 ((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \ 583 ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \ 584 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 2))) 585 #define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10)) 586 #define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11)) 587 #define ata_id_u32(id,n) \ 588 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)])) 589 #define ata_id_u64(id,n) \ 590 ( ((u64) (id)[(n) + 3] << 48) | \ 591 ((u64) (id)[(n) + 2] << 32) | \ 592 ((u64) (id)[(n) + 1] << 16) | \ 593 ((u64) (id)[(n) + 0]) ) 594 595 #define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20) 596 #define ata_id_has_da(id) ((id)[ATA_ID_SATA_CAPABILITY_2] & (1 << 4)) 597 #define ata_id_has_devslp(id) ((id)[ATA_ID_FEATURE_SUPP] & (1 << 8)) 598 599 static inline bool ata_id_has_hipm(const u16 *id) 600 { 601 u16 val = id[ATA_ID_SATA_CAPABILITY]; 602 603 if (val == 0 || val == 0xffff) 604 return false; 605 606 return val & (1 << 9); 607 } 608 609 static inline bool ata_id_has_dipm(const u16 *id) 610 { 611 u16 val = id[ATA_ID_FEATURE_SUPP]; 612 613 if (val == 0 || val == 0xffff) 614 return false; 615 616 return val & (1 << 3); 617 } 618 619 620 static inline bool ata_id_has_fua(const u16 *id) 621 { 622 if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000) 623 return false; 624 return id[ATA_ID_CFSSE] & (1 << 6); 625 } 626 627 static inline bool ata_id_has_flush(const u16 *id) 628 { 629 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 630 return false; 631 return id[ATA_ID_COMMAND_SET_2] & (1 << 12); 632 } 633 634 static inline bool ata_id_flush_enabled(const u16 *id) 635 { 636 if (ata_id_has_flush(id) == 0) 637 return false; 638 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 639 return false; 640 return id[ATA_ID_CFS_ENABLE_2] & (1 << 12); 641 } 642 643 static inline bool ata_id_has_flush_ext(const u16 *id) 644 { 645 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 646 return false; 647 return id[ATA_ID_COMMAND_SET_2] & (1 << 13); 648 } 649 650 static inline bool ata_id_flush_ext_enabled(const u16 *id) 651 { 652 if (ata_id_has_flush_ext(id) == 0) 653 return false; 654 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 655 return false; 656 /* 657 * some Maxtor disks have bit 13 defined incorrectly 658 * so check bit 10 too 659 */ 660 return (id[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400; 661 } 662 663 static inline u32 ata_id_logical_sector_size(const u16 *id) 664 { 665 /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128. 666 * IDENTIFY DEVICE data, word 117-118. 667 * 0xd000 ignores bit 13 (logical:physical > 1) 668 */ 669 if ((id[ATA_ID_SECTOR_SIZE] & 0xd000) == 0x5000) 670 return (((id[ATA_ID_LOGICAL_SECTOR_SIZE+1] << 16) 671 + id[ATA_ID_LOGICAL_SECTOR_SIZE]) * sizeof(u16)) ; 672 return ATA_SECT_SIZE; 673 } 674 675 static inline u8 ata_id_log2_per_physical_sector(const u16 *id) 676 { 677 /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128. 678 * IDENTIFY DEVICE data, word 106. 679 * 0xe000 ignores bit 12 (logical sector > 512 bytes) 680 */ 681 if ((id[ATA_ID_SECTOR_SIZE] & 0xe000) == 0x6000) 682 return (id[ATA_ID_SECTOR_SIZE] & 0xf); 683 return 0; 684 } 685 686 /* Offset of logical sectors relative to physical sectors. 687 * 688 * If device has more than one logical sector per physical sector 689 * (aka 512 byte emulation), vendors might offset the "sector 0" address 690 * so sector 63 is "naturally aligned" - e.g. FAT partition table. 691 * This avoids Read/Mod/Write penalties when using FAT partition table 692 * and updating "well aligned" (FS perspective) physical sectors on every 693 * transaction. 694 */ 695 static inline u16 ata_id_logical_sector_offset(const u16 *id, 696 u8 log2_per_phys) 697 { 698 u16 word_209 = id[209]; 699 700 if ((log2_per_phys > 1) && (word_209 & 0xc000) == 0x4000) { 701 u16 first = word_209 & 0x3fff; 702 if (first > 0) 703 return (1 << log2_per_phys) - first; 704 } 705 return 0; 706 } 707 708 static inline bool ata_id_has_lba48(const u16 *id) 709 { 710 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 711 return false; 712 if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2)) 713 return false; 714 return id[ATA_ID_COMMAND_SET_2] & (1 << 10); 715 } 716 717 static inline bool ata_id_lba48_enabled(const u16 *id) 718 { 719 if (ata_id_has_lba48(id) == 0) 720 return false; 721 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 722 return false; 723 return id[ATA_ID_CFS_ENABLE_2] & (1 << 10); 724 } 725 726 static inline bool ata_id_hpa_enabled(const u16 *id) 727 { 728 /* Yes children, word 83 valid bits cover word 82 data */ 729 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 730 return false; 731 /* And 87 covers 85-87 */ 732 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 733 return false; 734 /* Check command sets enabled as well as supported */ 735 if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0) 736 return false; 737 return id[ATA_ID_COMMAND_SET_1] & (1 << 10); 738 } 739 740 static inline bool ata_id_has_wcache(const u16 *id) 741 { 742 /* Yes children, word 83 valid bits cover word 82 data */ 743 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 744 return false; 745 return id[ATA_ID_COMMAND_SET_1] & (1 << 5); 746 } 747 748 static inline bool ata_id_has_pm(const u16 *id) 749 { 750 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 751 return false; 752 return id[ATA_ID_COMMAND_SET_1] & (1 << 3); 753 } 754 755 static inline bool ata_id_rahead_enabled(const u16 *id) 756 { 757 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 758 return false; 759 return id[ATA_ID_CFS_ENABLE_1] & (1 << 6); 760 } 761 762 static inline bool ata_id_wcache_enabled(const u16 *id) 763 { 764 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 765 return false; 766 return id[ATA_ID_CFS_ENABLE_1] & (1 << 5); 767 } 768 769 /** 770 * ata_id_major_version - get ATA level of drive 771 * @id: Identify data 772 * 773 * Caveats: 774 * ATA-1 considers identify optional 775 * ATA-2 introduces mandatory identify 776 * ATA-3 introduces word 80 and accurate reporting 777 * 778 * The practical impact of this is that ata_id_major_version cannot 779 * reliably report on drives below ATA3. 780 */ 781 782 static inline unsigned int ata_id_major_version(const u16 *id) 783 { 784 unsigned int mver; 785 786 if (id[ATA_ID_MAJOR_VER] == 0xFFFF) 787 return 0; 788 789 for (mver = 14; mver >= 1; mver--) 790 if (id[ATA_ID_MAJOR_VER] & (1 << mver)) 791 break; 792 return mver; 793 } 794 795 static inline bool ata_id_is_sata(const u16 *id) 796 { 797 /* 798 * See if word 93 is 0 AND drive is at least ATA-5 compatible 799 * verifying that word 80 by casting it to a signed type -- 800 * this trick allows us to filter out the reserved values of 801 * 0x0000 and 0xffff along with the earlier ATA revisions... 802 */ 803 if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020) 804 return true; 805 return false; 806 } 807 808 static inline bool ata_id_has_tpm(const u16 *id) 809 { 810 /* The TPM bits are only valid on ATA8 */ 811 if (ata_id_major_version(id) < 8) 812 return false; 813 if ((id[48] & 0xC000) != 0x4000) 814 return false; 815 return id[48] & (1 << 0); 816 } 817 818 static inline bool ata_id_has_dword_io(const u16 *id) 819 { 820 /* ATA 8 reuses this flag for "trusted" computing */ 821 if (ata_id_major_version(id) > 7) 822 return false; 823 return id[ATA_ID_DWORD_IO] & (1 << 0); 824 } 825 826 static inline bool ata_id_has_unload(const u16 *id) 827 { 828 if (ata_id_major_version(id) >= 7 && 829 (id[ATA_ID_CFSSE] & 0xC000) == 0x4000 && 830 id[ATA_ID_CFSSE] & (1 << 13)) 831 return true; 832 return false; 833 } 834 835 static inline bool ata_id_has_wwn(const u16 *id) 836 { 837 return (id[ATA_ID_CSF_DEFAULT] & 0xC100) == 0x4100; 838 } 839 840 static inline int ata_id_form_factor(const u16 *id) 841 { 842 u16 val = id[168]; 843 844 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff) 845 return 0; 846 847 val &= 0xf; 848 849 if (val > 5) 850 return 0; 851 852 return val; 853 } 854 855 static inline int ata_id_rotation_rate(const u16 *id) 856 { 857 u16 val = id[217]; 858 859 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff) 860 return 0; 861 862 if (val > 1 && val < 0x401) 863 return 0; 864 865 return val; 866 } 867 868 static inline bool ata_id_has_trim(const u16 *id) 869 { 870 if (ata_id_major_version(id) >= 7 && 871 (id[ATA_ID_DATA_SET_MGMT] & 1)) 872 return true; 873 return false; 874 } 875 876 static inline bool ata_id_has_zero_after_trim(const u16 *id) 877 { 878 /* DSM supported, deterministic read, and read zero after trim set */ 879 if (ata_id_has_trim(id) && 880 (id[ATA_ID_ADDITIONAL_SUPP] & 0x4020) == 0x4020) 881 return true; 882 883 return false; 884 } 885 886 static inline bool ata_id_current_chs_valid(const u16 *id) 887 { 888 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command 889 has not been issued to the device then the values of 890 id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */ 891 return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */ 892 id[ATA_ID_CUR_CYLS] && /* cylinders in current translation */ 893 id[ATA_ID_CUR_HEADS] && /* heads in current translation */ 894 id[ATA_ID_CUR_HEADS] <= 16 && 895 id[ATA_ID_CUR_SECTORS]; /* sectors in current translation */ 896 } 897 898 static inline bool ata_id_is_cfa(const u16 *id) 899 { 900 if ((id[ATA_ID_CONFIG] == 0x848A) || /* Traditional CF */ 901 (id[ATA_ID_CONFIG] == 0x844A)) /* Delkin Devices CF */ 902 return true; 903 /* 904 * CF specs don't require specific value in the word 0 anymore and yet 905 * they forbid to report the ATA version in the word 80 and require the 906 * CFA feature set support to be indicated in the word 83 in this case. 907 * Unfortunately, some cards only follow either of this requirements, 908 * and while those that don't indicate CFA feature support need some 909 * sort of quirk list, it seems impractical for the ones that do... 910 */ 911 return (id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004; 912 } 913 914 static inline bool ata_id_is_ssd(const u16 *id) 915 { 916 return id[ATA_ID_ROT_SPEED] == 0x01; 917 } 918 919 static inline bool ata_id_pio_need_iordy(const u16 *id, const u8 pio) 920 { 921 /* CF spec. r4.1 Table 22 says no IORDY on PIO5 and PIO6. */ 922 if (pio > 4 && ata_id_is_cfa(id)) 923 return false; 924 /* For PIO3 and higher it is mandatory. */ 925 if (pio > 2) 926 return true; 927 /* Turn it on when possible. */ 928 return ata_id_has_iordy(id); 929 } 930 931 static inline bool ata_drive_40wire(const u16 *dev_id) 932 { 933 if (ata_id_is_sata(dev_id)) 934 return false; /* SATA */ 935 if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000) 936 return false; /* 80 wire */ 937 return true; 938 } 939 940 static inline bool ata_drive_40wire_relaxed(const u16 *dev_id) 941 { 942 if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000) 943 return false; /* 80 wire */ 944 return true; 945 } 946 947 static inline int atapi_cdb_len(const u16 *dev_id) 948 { 949 u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3; 950 switch (tmp) { 951 case 0: return 12; 952 case 1: return 16; 953 default: return -1; 954 } 955 } 956 957 static inline bool atapi_command_packet_set(const u16 *dev_id) 958 { 959 return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f; 960 } 961 962 static inline bool atapi_id_dmadir(const u16 *dev_id) 963 { 964 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000); 965 } 966 967 /* 968 * ata_id_is_lba_capacity_ok() performs a sanity check on 969 * the claimed LBA capacity value for the device. 970 * 971 * Returns 1 if LBA capacity looks sensible, 0 otherwise. 972 * 973 * It is called only once for each device. 974 */ 975 static inline bool ata_id_is_lba_capacity_ok(u16 *id) 976 { 977 unsigned long lba_sects, chs_sects, head, tail; 978 979 /* No non-LBA info .. so valid! */ 980 if (id[ATA_ID_CYLS] == 0) 981 return true; 982 983 lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY); 984 985 /* 986 * The ATA spec tells large drives to return 987 * C/H/S = 16383/16/63 independent of their size. 988 * Some drives can be jumpered to use 15 heads instead of 16. 989 * Some drives can be jumpered to use 4092 cyls instead of 16383. 990 */ 991 if ((id[ATA_ID_CYLS] == 16383 || 992 (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) && 993 id[ATA_ID_SECTORS] == 63 && 994 (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) && 995 (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS])) 996 return true; 997 998 chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS]; 999 1000 /* perform a rough sanity check on lba_sects: within 10% is OK */ 1001 if (lba_sects - chs_sects < chs_sects/10) 1002 return true; 1003 1004 /* some drives have the word order reversed */ 1005 head = (lba_sects >> 16) & 0xffff; 1006 tail = lba_sects & 0xffff; 1007 lba_sects = head | (tail << 16); 1008 1009 if (lba_sects - chs_sects < chs_sects/10) { 1010 *(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects); 1011 return true; /* LBA capacity is (now) good */ 1012 } 1013 1014 return false; /* LBA capacity value may be bad */ 1015 } 1016 1017 static inline void ata_id_to_hd_driveid(u16 *id) 1018 { 1019 #ifdef __BIG_ENDIAN 1020 /* accessed in struct hd_driveid as 8-bit values */ 1021 id[ATA_ID_MAX_MULTSECT] = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]); 1022 id[ATA_ID_CAPABILITY] = __cpu_to_le16(id[ATA_ID_CAPABILITY]); 1023 id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]); 1024 id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]); 1025 id[ATA_ID_MULTSECT] = __cpu_to_le16(id[ATA_ID_MULTSECT]); 1026 1027 /* as 32-bit values */ 1028 *(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY); 1029 *(u32 *)&id[ATA_ID_SPG] = ata_id_u32(id, ATA_ID_SPG); 1030 1031 /* as 64-bit value */ 1032 *(u64 *)&id[ATA_ID_LBA_CAPACITY_2] = 1033 ata_id_u64(id, ATA_ID_LBA_CAPACITY_2); 1034 #endif 1035 } 1036 1037 /* 1038 * Write LBA Range Entries to the buffer that will cover the extent from 1039 * sector to sector + count. This is used for TRIM and for ADD LBA(S) 1040 * TO NV CACHE PINNED SET. 1041 */ 1042 static inline unsigned ata_set_lba_range_entries(void *_buffer, 1043 unsigned buf_size, u64 sector, unsigned long count) 1044 { 1045 __le64 *buffer = _buffer; 1046 unsigned i = 0, used_bytes; 1047 1048 while (i < buf_size / 8 ) { /* 6-byte LBA + 2-byte range per entry */ 1049 u64 entry = sector | 1050 ((u64)(count > 0xffff ? 0xffff : count) << 48); 1051 buffer[i++] = __cpu_to_le64(entry); 1052 if (count <= 0xffff) 1053 break; 1054 count -= 0xffff; 1055 sector += 0xffff; 1056 } 1057 1058 used_bytes = ALIGN(i * 8, 512); 1059 memset(buffer + i, 0, used_bytes - i * 8); 1060 return used_bytes; 1061 } 1062 1063 static inline int is_multi_taskfile(struct ata_taskfile *tf) 1064 { 1065 return (tf->command == ATA_CMD_READ_MULTI) || 1066 (tf->command == ATA_CMD_WRITE_MULTI) || 1067 (tf->command == ATA_CMD_READ_MULTI_EXT) || 1068 (tf->command == ATA_CMD_WRITE_MULTI_EXT) || 1069 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); 1070 } 1071 1072 static inline bool ata_ok(u8 status) 1073 { 1074 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR)) 1075 == ATA_DRDY); 1076 } 1077 1078 static inline bool lba_28_ok(u64 block, u32 n_block) 1079 { 1080 /* check the ending block number: must be LESS THAN 0x0fffffff */ 1081 return ((block + n_block) < ((1 << 28) - 1)) && (n_block <= 256); 1082 } 1083 1084 static inline bool lba_48_ok(u64 block, u32 n_block) 1085 { 1086 /* check the ending block number */ 1087 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536); 1088 } 1089 1090 #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff) 1091 #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16) 1092 #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff) 1093 #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf) 1094 1095 #endif /* __LINUX_ATA_H__ */ 1096