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,/* avoid count to be 0000h */ 50 ATA_MAX_SECTORS_TAPE = 65535, 51 ATA_MAX_TRIM_RNUM = 64, /* 512-byte payload / (6-byte LBA + 2-byte range per entry) */ 52 53 ATA_ID_WORDS = 256, 54 ATA_ID_CONFIG = 0, 55 ATA_ID_CYLS = 1, 56 ATA_ID_HEADS = 3, 57 ATA_ID_SECTORS = 6, 58 ATA_ID_SERNO = 10, 59 ATA_ID_BUF_SIZE = 21, 60 ATA_ID_FW_REV = 23, 61 ATA_ID_PROD = 27, 62 ATA_ID_MAX_MULTSECT = 47, 63 ATA_ID_DWORD_IO = 48, 64 ATA_ID_CAPABILITY = 49, 65 ATA_ID_OLD_PIO_MODES = 51, 66 ATA_ID_OLD_DMA_MODES = 52, 67 ATA_ID_FIELD_VALID = 53, 68 ATA_ID_CUR_CYLS = 54, 69 ATA_ID_CUR_HEADS = 55, 70 ATA_ID_CUR_SECTORS = 56, 71 ATA_ID_MULTSECT = 59, 72 ATA_ID_LBA_CAPACITY = 60, 73 ATA_ID_SWDMA_MODES = 62, 74 ATA_ID_MWDMA_MODES = 63, 75 ATA_ID_PIO_MODES = 64, 76 ATA_ID_EIDE_DMA_MIN = 65, 77 ATA_ID_EIDE_DMA_TIME = 66, 78 ATA_ID_EIDE_PIO = 67, 79 ATA_ID_EIDE_PIO_IORDY = 68, 80 ATA_ID_ADDITIONAL_SUPP = 69, 81 ATA_ID_QUEUE_DEPTH = 75, 82 ATA_ID_SATA_CAPABILITY = 76, 83 ATA_ID_SATA_CAPABILITY_2 = 77, 84 ATA_ID_FEATURE_SUPP = 78, 85 ATA_ID_MAJOR_VER = 80, 86 ATA_ID_COMMAND_SET_1 = 82, 87 ATA_ID_COMMAND_SET_2 = 83, 88 ATA_ID_CFSSE = 84, 89 ATA_ID_CFS_ENABLE_1 = 85, 90 ATA_ID_CFS_ENABLE_2 = 86, 91 ATA_ID_CSF_DEFAULT = 87, 92 ATA_ID_UDMA_MODES = 88, 93 ATA_ID_HW_CONFIG = 93, 94 ATA_ID_SPG = 98, 95 ATA_ID_LBA_CAPACITY_2 = 100, 96 ATA_ID_SECTOR_SIZE = 106, 97 ATA_ID_WWN = 108, 98 ATA_ID_LOGICAL_SECTOR_SIZE = 117, /* and 118 */ 99 ATA_ID_COMMAND_SET_3 = 119, 100 ATA_ID_COMMAND_SET_4 = 120, 101 ATA_ID_LAST_LUN = 126, 102 ATA_ID_DLF = 128, 103 ATA_ID_CSFO = 129, 104 ATA_ID_CFA_POWER = 160, 105 ATA_ID_CFA_KEY_MGMT = 162, 106 ATA_ID_CFA_MODES = 163, 107 ATA_ID_DATA_SET_MGMT = 169, 108 ATA_ID_ROT_SPEED = 217, 109 ATA_ID_PIO4 = (1 << 1), 110 111 ATA_ID_SERNO_LEN = 20, 112 ATA_ID_FW_REV_LEN = 8, 113 ATA_ID_PROD_LEN = 40, 114 ATA_ID_WWN_LEN = 8, 115 116 ATA_PCI_CTL_OFS = 2, 117 118 ATA_PIO0 = (1 << 0), 119 ATA_PIO1 = ATA_PIO0 | (1 << 1), 120 ATA_PIO2 = ATA_PIO1 | (1 << 2), 121 ATA_PIO3 = ATA_PIO2 | (1 << 3), 122 ATA_PIO4 = ATA_PIO3 | (1 << 4), 123 ATA_PIO5 = ATA_PIO4 | (1 << 5), 124 ATA_PIO6 = ATA_PIO5 | (1 << 6), 125 126 ATA_PIO4_ONLY = (1 << 4), 127 128 ATA_SWDMA0 = (1 << 0), 129 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1), 130 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2), 131 132 ATA_SWDMA2_ONLY = (1 << 2), 133 134 ATA_MWDMA0 = (1 << 0), 135 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1), 136 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2), 137 ATA_MWDMA3 = ATA_MWDMA2 | (1 << 3), 138 ATA_MWDMA4 = ATA_MWDMA3 | (1 << 4), 139 140 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2), 141 ATA_MWDMA2_ONLY = (1 << 2), 142 143 ATA_UDMA0 = (1 << 0), 144 ATA_UDMA1 = ATA_UDMA0 | (1 << 1), 145 ATA_UDMA2 = ATA_UDMA1 | (1 << 2), 146 ATA_UDMA3 = ATA_UDMA2 | (1 << 3), 147 ATA_UDMA4 = ATA_UDMA3 | (1 << 4), 148 ATA_UDMA5 = ATA_UDMA4 | (1 << 5), 149 ATA_UDMA6 = ATA_UDMA5 | (1 << 6), 150 ATA_UDMA7 = ATA_UDMA6 | (1 << 7), 151 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */ 152 153 ATA_UDMA24_ONLY = (1 << 2) | (1 << 4), 154 155 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */ 156 157 /* DMA-related */ 158 ATA_PRD_SZ = 8, 159 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ), 160 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */ 161 162 ATA_DMA_TABLE_OFS = 4, 163 ATA_DMA_STATUS = 2, 164 ATA_DMA_CMD = 0, 165 ATA_DMA_WR = (1 << 3), 166 ATA_DMA_START = (1 << 0), 167 ATA_DMA_INTR = (1 << 2), 168 ATA_DMA_ERR = (1 << 1), 169 ATA_DMA_ACTIVE = (1 << 0), 170 171 /* bits in ATA command block registers */ 172 ATA_HOB = (1 << 7), /* LBA48 selector */ 173 ATA_NIEN = (1 << 1), /* disable-irq flag */ 174 ATA_LBA = (1 << 6), /* LBA28 selector */ 175 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */ 176 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */ 177 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */ 178 ATA_BUSY = (1 << 7), /* BSY status bit */ 179 ATA_DRDY = (1 << 6), /* device ready */ 180 ATA_DF = (1 << 5), /* device fault */ 181 ATA_DSC = (1 << 4), /* drive seek complete */ 182 ATA_DRQ = (1 << 3), /* data request i/o */ 183 ATA_CORR = (1 << 2), /* corrected data error */ 184 ATA_SENSE = (1 << 1), /* sense code available */ 185 ATA_ERR = (1 << 0), /* have an error */ 186 ATA_SRST = (1 << 2), /* software reset */ 187 ATA_ICRC = (1 << 7), /* interface CRC error */ 188 ATA_BBK = ATA_ICRC, /* pre-EIDE: block marked bad */ 189 ATA_UNC = (1 << 6), /* uncorrectable media error */ 190 ATA_MC = (1 << 5), /* media changed */ 191 ATA_IDNF = (1 << 4), /* ID not found */ 192 ATA_MCR = (1 << 3), /* media change requested */ 193 ATA_ABORTED = (1 << 2), /* command aborted */ 194 ATA_TRK0NF = (1 << 1), /* track 0 not found */ 195 ATA_AMNF = (1 << 0), /* address mark not found */ 196 ATAPI_LFS = 0xF0, /* last failed sense */ 197 ATAPI_EOM = ATA_TRK0NF, /* end of media */ 198 ATAPI_ILI = ATA_AMNF, /* illegal length indication */ 199 ATAPI_IO = (1 << 1), 200 ATAPI_COD = (1 << 0), 201 202 /* ATA command block registers */ 203 ATA_REG_DATA = 0x00, 204 ATA_REG_ERR = 0x01, 205 ATA_REG_NSECT = 0x02, 206 ATA_REG_LBAL = 0x03, 207 ATA_REG_LBAM = 0x04, 208 ATA_REG_LBAH = 0x05, 209 ATA_REG_DEVICE = 0x06, 210 ATA_REG_STATUS = 0x07, 211 212 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */ 213 ATA_REG_CMD = ATA_REG_STATUS, 214 ATA_REG_BYTEL = ATA_REG_LBAM, 215 ATA_REG_BYTEH = ATA_REG_LBAH, 216 ATA_REG_DEVSEL = ATA_REG_DEVICE, 217 ATA_REG_IRQ = ATA_REG_NSECT, 218 219 /* ATA device commands */ 220 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */ 221 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */ 222 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */ 223 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */ 224 ATA_CMD_EDD = 0x90, /* execute device diagnostic */ 225 ATA_CMD_DOWNLOAD_MICRO = 0x92, 226 ATA_CMD_DOWNLOAD_MICRO_DMA = 0x93, 227 ATA_CMD_NOP = 0x00, 228 ATA_CMD_FLUSH = 0xE7, 229 ATA_CMD_FLUSH_EXT = 0xEA, 230 ATA_CMD_ID_ATA = 0xEC, 231 ATA_CMD_ID_ATAPI = 0xA1, 232 ATA_CMD_SERVICE = 0xA2, 233 ATA_CMD_READ = 0xC8, 234 ATA_CMD_READ_EXT = 0x25, 235 ATA_CMD_READ_QUEUED = 0x26, 236 ATA_CMD_READ_STREAM_EXT = 0x2B, 237 ATA_CMD_READ_STREAM_DMA_EXT = 0x2A, 238 ATA_CMD_WRITE = 0xCA, 239 ATA_CMD_WRITE_EXT = 0x35, 240 ATA_CMD_WRITE_QUEUED = 0x36, 241 ATA_CMD_WRITE_STREAM_EXT = 0x3B, 242 ATA_CMD_WRITE_STREAM_DMA_EXT = 0x3A, 243 ATA_CMD_WRITE_FUA_EXT = 0x3D, 244 ATA_CMD_WRITE_QUEUED_FUA_EXT = 0x3E, 245 ATA_CMD_FPDMA_READ = 0x60, 246 ATA_CMD_FPDMA_WRITE = 0x61, 247 ATA_CMD_NCQ_NON_DATA = 0x63, 248 ATA_CMD_FPDMA_SEND = 0x64, 249 ATA_CMD_FPDMA_RECV = 0x65, 250 ATA_CMD_PIO_READ = 0x20, 251 ATA_CMD_PIO_READ_EXT = 0x24, 252 ATA_CMD_PIO_WRITE = 0x30, 253 ATA_CMD_PIO_WRITE_EXT = 0x34, 254 ATA_CMD_READ_MULTI = 0xC4, 255 ATA_CMD_READ_MULTI_EXT = 0x29, 256 ATA_CMD_WRITE_MULTI = 0xC5, 257 ATA_CMD_WRITE_MULTI_EXT = 0x39, 258 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE, 259 ATA_CMD_SET_FEATURES = 0xEF, 260 ATA_CMD_SET_MULTI = 0xC6, 261 ATA_CMD_PACKET = 0xA0, 262 ATA_CMD_VERIFY = 0x40, 263 ATA_CMD_VERIFY_EXT = 0x42, 264 ATA_CMD_WRITE_UNCORR_EXT = 0x45, 265 ATA_CMD_STANDBYNOW1 = 0xE0, 266 ATA_CMD_IDLEIMMEDIATE = 0xE1, 267 ATA_CMD_SLEEP = 0xE6, 268 ATA_CMD_INIT_DEV_PARAMS = 0x91, 269 ATA_CMD_READ_NATIVE_MAX = 0xF8, 270 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27, 271 ATA_CMD_SET_MAX = 0xF9, 272 ATA_CMD_SET_MAX_EXT = 0x37, 273 ATA_CMD_READ_LOG_EXT = 0x2F, 274 ATA_CMD_WRITE_LOG_EXT = 0x3F, 275 ATA_CMD_READ_LOG_DMA_EXT = 0x47, 276 ATA_CMD_WRITE_LOG_DMA_EXT = 0x57, 277 ATA_CMD_TRUSTED_NONDATA = 0x5B, 278 ATA_CMD_TRUSTED_RCV = 0x5C, 279 ATA_CMD_TRUSTED_RCV_DMA = 0x5D, 280 ATA_CMD_TRUSTED_SND = 0x5E, 281 ATA_CMD_TRUSTED_SND_DMA = 0x5F, 282 ATA_CMD_PMP_READ = 0xE4, 283 ATA_CMD_PMP_READ_DMA = 0xE9, 284 ATA_CMD_PMP_WRITE = 0xE8, 285 ATA_CMD_PMP_WRITE_DMA = 0xEB, 286 ATA_CMD_CONF_OVERLAY = 0xB1, 287 ATA_CMD_SEC_SET_PASS = 0xF1, 288 ATA_CMD_SEC_UNLOCK = 0xF2, 289 ATA_CMD_SEC_ERASE_PREP = 0xF3, 290 ATA_CMD_SEC_ERASE_UNIT = 0xF4, 291 ATA_CMD_SEC_FREEZE_LOCK = 0xF5, 292 ATA_CMD_SEC_DISABLE_PASS = 0xF6, 293 ATA_CMD_CONFIG_STREAM = 0x51, 294 ATA_CMD_SMART = 0xB0, 295 ATA_CMD_MEDIA_LOCK = 0xDE, 296 ATA_CMD_MEDIA_UNLOCK = 0xDF, 297 ATA_CMD_DSM = 0x06, 298 ATA_CMD_CHK_MED_CRD_TYP = 0xD1, 299 ATA_CMD_CFA_REQ_EXT_ERR = 0x03, 300 ATA_CMD_CFA_WRITE_NE = 0x38, 301 ATA_CMD_CFA_TRANS_SECT = 0x87, 302 ATA_CMD_CFA_ERASE = 0xC0, 303 ATA_CMD_CFA_WRITE_MULT_NE = 0xCD, 304 ATA_CMD_REQ_SENSE_DATA = 0x0B, 305 ATA_CMD_SANITIZE_DEVICE = 0xB4, 306 ATA_CMD_ZAC_MGMT_IN = 0x4A, 307 ATA_CMD_ZAC_MGMT_OUT = 0x9F, 308 309 /* marked obsolete in the ATA/ATAPI-7 spec */ 310 ATA_CMD_RESTORE = 0x10, 311 312 /* Subcmds for ATA_CMD_FPDMA_RECV */ 313 ATA_SUBCMD_FPDMA_RECV_RD_LOG_DMA_EXT = 0x01, 314 ATA_SUBCMD_FPDMA_RECV_ZAC_MGMT_IN = 0x02, 315 316 /* Subcmds for ATA_CMD_FPDMA_SEND */ 317 ATA_SUBCMD_FPDMA_SEND_DSM = 0x00, 318 ATA_SUBCMD_FPDMA_SEND_WR_LOG_DMA_EXT = 0x02, 319 320 /* Subcmds for ATA_CMD_NCQ_NON_DATA */ 321 ATA_SUBCMD_NCQ_NON_DATA_ABORT_QUEUE = 0x00, 322 ATA_SUBCMD_NCQ_NON_DATA_SET_FEATURES = 0x05, 323 ATA_SUBCMD_NCQ_NON_DATA_ZERO_EXT = 0x06, 324 ATA_SUBCMD_NCQ_NON_DATA_ZAC_MGMT_OUT = 0x07, 325 326 /* Subcmds for ATA_CMD_ZAC_MGMT_IN */ 327 ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES = 0x00, 328 329 /* Subcmds for ATA_CMD_ZAC_MGMT_OUT */ 330 ATA_SUBCMD_ZAC_MGMT_OUT_CLOSE_ZONE = 0x01, 331 ATA_SUBCMD_ZAC_MGMT_OUT_FINISH_ZONE = 0x02, 332 ATA_SUBCMD_ZAC_MGMT_OUT_OPEN_ZONE = 0x03, 333 ATA_SUBCMD_ZAC_MGMT_OUT_RESET_WRITE_POINTER = 0x04, 334 335 /* READ_LOG_EXT pages */ 336 ATA_LOG_DIRECTORY = 0x0, 337 ATA_LOG_SATA_NCQ = 0x10, 338 ATA_LOG_NCQ_NON_DATA = 0x12, 339 ATA_LOG_NCQ_SEND_RECV = 0x13, 340 ATA_LOG_SATA_ID_DEV_DATA = 0x30, 341 ATA_LOG_SATA_SETTINGS = 0x08, 342 ATA_LOG_ZONED_INFORMATION = 0x09, 343 ATA_LOG_DEVSLP_OFFSET = 0x30, 344 ATA_LOG_DEVSLP_SIZE = 0x08, 345 ATA_LOG_DEVSLP_MDAT = 0x00, 346 ATA_LOG_DEVSLP_MDAT_MASK = 0x1F, 347 ATA_LOG_DEVSLP_DETO = 0x01, 348 ATA_LOG_DEVSLP_VALID = 0x07, 349 ATA_LOG_DEVSLP_VALID_MASK = 0x80, 350 351 /* NCQ send and receive log */ 352 ATA_LOG_NCQ_SEND_RECV_SUBCMDS_OFFSET = 0x00, 353 ATA_LOG_NCQ_SEND_RECV_SUBCMDS_DSM = (1 << 0), 354 ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET = 0x04, 355 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM = (1 << 0), 356 ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET = 0x08, 357 ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED = (1 << 0), 358 ATA_LOG_NCQ_SEND_RECV_WR_LOG_OFFSET = 0x0C, 359 ATA_LOG_NCQ_SEND_RECV_WR_LOG_SUPPORTED = (1 << 0), 360 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET = 0x10, 361 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OUT_SUPPORTED = (1 << 0), 362 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED = (1 << 1), 363 ATA_LOG_NCQ_SEND_RECV_SIZE = 0x14, 364 365 /* NCQ Non-Data log */ 366 ATA_LOG_NCQ_NON_DATA_SUBCMDS_OFFSET = 0x00, 367 ATA_LOG_NCQ_NON_DATA_ABORT_OFFSET = 0x00, 368 ATA_LOG_NCQ_NON_DATA_ABORT_NCQ = (1 << 0), 369 ATA_LOG_NCQ_NON_DATA_ABORT_ALL = (1 << 1), 370 ATA_LOG_NCQ_NON_DATA_ABORT_STREAMING = (1 << 2), 371 ATA_LOG_NCQ_NON_DATA_ABORT_NON_STREAMING = (1 << 3), 372 ATA_LOG_NCQ_NON_DATA_ABORT_SELECTED = (1 << 4), 373 ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET = 0x1C, 374 ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT = (1 << 0), 375 ATA_LOG_NCQ_NON_DATA_SIZE = 0x40, 376 377 /* READ/WRITE LONG (obsolete) */ 378 ATA_CMD_READ_LONG = 0x22, 379 ATA_CMD_READ_LONG_ONCE = 0x23, 380 ATA_CMD_WRITE_LONG = 0x32, 381 ATA_CMD_WRITE_LONG_ONCE = 0x33, 382 383 /* SETFEATURES stuff */ 384 SETFEATURES_XFER = 0x03, 385 XFER_UDMA_7 = 0x47, 386 XFER_UDMA_6 = 0x46, 387 XFER_UDMA_5 = 0x45, 388 XFER_UDMA_4 = 0x44, 389 XFER_UDMA_3 = 0x43, 390 XFER_UDMA_2 = 0x42, 391 XFER_UDMA_1 = 0x41, 392 XFER_UDMA_0 = 0x40, 393 XFER_MW_DMA_4 = 0x24, /* CFA only */ 394 XFER_MW_DMA_3 = 0x23, /* CFA only */ 395 XFER_MW_DMA_2 = 0x22, 396 XFER_MW_DMA_1 = 0x21, 397 XFER_MW_DMA_0 = 0x20, 398 XFER_SW_DMA_2 = 0x12, 399 XFER_SW_DMA_1 = 0x11, 400 XFER_SW_DMA_0 = 0x10, 401 XFER_PIO_6 = 0x0E, /* CFA only */ 402 XFER_PIO_5 = 0x0D, /* CFA only */ 403 XFER_PIO_4 = 0x0C, 404 XFER_PIO_3 = 0x0B, 405 XFER_PIO_2 = 0x0A, 406 XFER_PIO_1 = 0x09, 407 XFER_PIO_0 = 0x08, 408 XFER_PIO_SLOW = 0x00, 409 410 SETFEATURES_WC_ON = 0x02, /* Enable write cache */ 411 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */ 412 413 SETFEATURES_RA_ON = 0xaa, /* Enable read look-ahead */ 414 SETFEATURES_RA_OFF = 0x55, /* Disable read look-ahead */ 415 416 /* Enable/Disable Automatic Acoustic Management */ 417 SETFEATURES_AAM_ON = 0x42, 418 SETFEATURES_AAM_OFF = 0xC2, 419 420 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */ 421 SETFEATURES_SPINUP_TIMEOUT = 30000, /* 30s timeout for drive spin-up from PUIS */ 422 423 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */ 424 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */ 425 426 /* SETFEATURE Sector counts for SATA features */ 427 SATA_FPDMA_OFFSET = 0x01, /* FPDMA non-zero buffer offsets */ 428 SATA_FPDMA_AA = 0x02, /* FPDMA Setup FIS Auto-Activate */ 429 SATA_DIPM = 0x03, /* Device Initiated Power Management */ 430 SATA_FPDMA_IN_ORDER = 0x04, /* FPDMA in-order data delivery */ 431 SATA_AN = 0x05, /* Asynchronous Notification */ 432 SATA_SSP = 0x06, /* Software Settings Preservation */ 433 SATA_DEVSLP = 0x09, /* Device Sleep */ 434 435 SETFEATURE_SENSE_DATA = 0xC3, /* Sense Data Reporting feature */ 436 437 /* feature values for SET_MAX */ 438 ATA_SET_MAX_ADDR = 0x00, 439 ATA_SET_MAX_PASSWD = 0x01, 440 ATA_SET_MAX_LOCK = 0x02, 441 ATA_SET_MAX_UNLOCK = 0x03, 442 ATA_SET_MAX_FREEZE_LOCK = 0x04, 443 444 /* feature values for DEVICE CONFIGURATION OVERLAY */ 445 ATA_DCO_RESTORE = 0xC0, 446 ATA_DCO_FREEZE_LOCK = 0xC1, 447 ATA_DCO_IDENTIFY = 0xC2, 448 ATA_DCO_SET = 0xC3, 449 450 /* feature values for SMART */ 451 ATA_SMART_ENABLE = 0xD8, 452 ATA_SMART_READ_VALUES = 0xD0, 453 ATA_SMART_READ_THRESHOLDS = 0xD1, 454 455 /* feature values for Data Set Management */ 456 ATA_DSM_TRIM = 0x01, 457 458 /* password used in LBA Mid / LBA High for executing SMART commands */ 459 ATA_SMART_LBAM_PASS = 0x4F, 460 ATA_SMART_LBAH_PASS = 0xC2, 461 462 /* ATAPI stuff */ 463 ATAPI_PKT_DMA = (1 << 0), 464 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir: 465 0=to device, 1=to host */ 466 ATAPI_CDB_LEN = 16, 467 468 /* PMP stuff */ 469 SATA_PMP_MAX_PORTS = 15, 470 SATA_PMP_CTRL_PORT = 15, 471 472 SATA_PMP_GSCR_DWORDS = 128, 473 SATA_PMP_GSCR_PROD_ID = 0, 474 SATA_PMP_GSCR_REV = 1, 475 SATA_PMP_GSCR_PORT_INFO = 2, 476 SATA_PMP_GSCR_ERROR = 32, 477 SATA_PMP_GSCR_ERROR_EN = 33, 478 SATA_PMP_GSCR_FEAT = 64, 479 SATA_PMP_GSCR_FEAT_EN = 96, 480 481 SATA_PMP_PSCR_STATUS = 0, 482 SATA_PMP_PSCR_ERROR = 1, 483 SATA_PMP_PSCR_CONTROL = 2, 484 485 SATA_PMP_FEAT_BIST = (1 << 0), 486 SATA_PMP_FEAT_PMREQ = (1 << 1), 487 SATA_PMP_FEAT_DYNSSC = (1 << 2), 488 SATA_PMP_FEAT_NOTIFY = (1 << 3), 489 490 /* cable types */ 491 ATA_CBL_NONE = 0, 492 ATA_CBL_PATA40 = 1, 493 ATA_CBL_PATA80 = 2, 494 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */ 495 ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */ 496 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */ 497 ATA_CBL_SATA = 6, 498 499 /* SATA Status and Control Registers */ 500 SCR_STATUS = 0, 501 SCR_ERROR = 1, 502 SCR_CONTROL = 2, 503 SCR_ACTIVE = 3, 504 SCR_NOTIFICATION = 4, 505 506 /* SError bits */ 507 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */ 508 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */ 509 SERR_DATA = (1 << 8), /* unrecovered data error */ 510 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */ 511 SERR_PROTOCOL = (1 << 10), /* protocol violation */ 512 SERR_INTERNAL = (1 << 11), /* host internal error */ 513 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */ 514 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */ 515 SERR_COMM_WAKE = (1 << 18), /* Comm wake */ 516 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */ 517 SERR_DISPARITY = (1 << 20), /* Disparity */ 518 SERR_CRC = (1 << 21), /* CRC error */ 519 SERR_HANDSHAKE = (1 << 22), /* Handshake error */ 520 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */ 521 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */ 522 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */ 523 SERR_DEV_XCHG = (1 << 26), /* device exchanged */ 524 }; 525 526 enum ata_prot_flags { 527 /* protocol flags */ 528 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */ 529 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */ 530 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */ 531 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */ 532 533 /* taskfile protocols */ 534 ATA_PROT_UNKNOWN = (u8)-1, 535 ATA_PROT_NODATA = 0, 536 ATA_PROT_PIO = ATA_PROT_FLAG_PIO, 537 ATA_PROT_DMA = ATA_PROT_FLAG_DMA, 538 ATA_PROT_NCQ_NODATA = ATA_PROT_FLAG_NCQ, 539 ATA_PROT_NCQ = ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ, 540 ATAPI_PROT_NODATA = ATA_PROT_FLAG_ATAPI, 541 ATAPI_PROT_PIO = ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO, 542 ATAPI_PROT_DMA = ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA, 543 }; 544 545 enum ata_ioctls { 546 ATA_IOC_GET_IO32 = 0x309, /* HDIO_GET_32BIT */ 547 ATA_IOC_SET_IO32 = 0x324, /* HDIO_SET_32BIT */ 548 }; 549 550 /* core structures */ 551 552 struct ata_bmdma_prd { 553 __le32 addr; 554 __le32 flags_len; 555 }; 556 557 /* 558 * id tests 559 */ 560 #define ata_id_is_ata(id) (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0) 561 #define ata_id_has_lba(id) ((id)[ATA_ID_CAPABILITY] & (1 << 9)) 562 #define ata_id_has_dma(id) ((id)[ATA_ID_CAPABILITY] & (1 << 8)) 563 #define ata_id_has_ncq(id) ((id)[ATA_ID_SATA_CAPABILITY] & (1 << 8)) 564 #define ata_id_queue_depth(id) (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1) 565 #define ata_id_removable(id) ((id)[ATA_ID_CONFIG] & (1 << 7)) 566 #define ata_id_has_atapi_AN(id) \ 567 ((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \ 568 ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \ 569 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 5))) 570 #define ata_id_has_fpdma_aa(id) \ 571 ((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \ 572 ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \ 573 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 2))) 574 #define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10)) 575 #define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11)) 576 #define ata_id_u32(id,n) \ 577 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)])) 578 #define ata_id_u64(id,n) \ 579 ( ((u64) (id)[(n) + 3] << 48) | \ 580 ((u64) (id)[(n) + 2] << 32) | \ 581 ((u64) (id)[(n) + 1] << 16) | \ 582 ((u64) (id)[(n) + 0]) ) 583 584 #define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20) 585 #define ata_id_has_da(id) ((id)[ATA_ID_SATA_CAPABILITY_2] & (1 << 4)) 586 #define ata_id_has_devslp(id) ((id)[ATA_ID_FEATURE_SUPP] & (1 << 8)) 587 #define ata_id_has_ncq_autosense(id) \ 588 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 7)) 589 590 static inline bool ata_id_has_hipm(const u16 *id) 591 { 592 u16 val = id[ATA_ID_SATA_CAPABILITY]; 593 594 if (val == 0 || val == 0xffff) 595 return false; 596 597 return val & (1 << 9); 598 } 599 600 static inline bool ata_id_has_dipm(const u16 *id) 601 { 602 u16 val = id[ATA_ID_FEATURE_SUPP]; 603 604 if (val == 0 || val == 0xffff) 605 return false; 606 607 return val & (1 << 3); 608 } 609 610 611 static inline bool ata_id_has_fua(const u16 *id) 612 { 613 if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000) 614 return false; 615 return id[ATA_ID_CFSSE] & (1 << 6); 616 } 617 618 static inline bool ata_id_has_flush(const u16 *id) 619 { 620 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 621 return false; 622 return id[ATA_ID_COMMAND_SET_2] & (1 << 12); 623 } 624 625 static inline bool ata_id_flush_enabled(const u16 *id) 626 { 627 if (ata_id_has_flush(id) == 0) 628 return false; 629 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 630 return false; 631 return id[ATA_ID_CFS_ENABLE_2] & (1 << 12); 632 } 633 634 static inline bool ata_id_has_flush_ext(const u16 *id) 635 { 636 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 637 return false; 638 return id[ATA_ID_COMMAND_SET_2] & (1 << 13); 639 } 640 641 static inline bool ata_id_flush_ext_enabled(const u16 *id) 642 { 643 if (ata_id_has_flush_ext(id) == 0) 644 return false; 645 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 646 return false; 647 /* 648 * some Maxtor disks have bit 13 defined incorrectly 649 * so check bit 10 too 650 */ 651 return (id[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400; 652 } 653 654 static inline u32 ata_id_logical_sector_size(const u16 *id) 655 { 656 /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128. 657 * IDENTIFY DEVICE data, word 117-118. 658 * 0xd000 ignores bit 13 (logical:physical > 1) 659 */ 660 if ((id[ATA_ID_SECTOR_SIZE] & 0xd000) == 0x5000) 661 return (((id[ATA_ID_LOGICAL_SECTOR_SIZE+1] << 16) 662 + id[ATA_ID_LOGICAL_SECTOR_SIZE]) * sizeof(u16)) ; 663 return ATA_SECT_SIZE; 664 } 665 666 static inline u8 ata_id_log2_per_physical_sector(const u16 *id) 667 { 668 /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128. 669 * IDENTIFY DEVICE data, word 106. 670 * 0xe000 ignores bit 12 (logical sector > 512 bytes) 671 */ 672 if ((id[ATA_ID_SECTOR_SIZE] & 0xe000) == 0x6000) 673 return (id[ATA_ID_SECTOR_SIZE] & 0xf); 674 return 0; 675 } 676 677 /* Offset of logical sectors relative to physical sectors. 678 * 679 * If device has more than one logical sector per physical sector 680 * (aka 512 byte emulation), vendors might offset the "sector 0" address 681 * so sector 63 is "naturally aligned" - e.g. FAT partition table. 682 * This avoids Read/Mod/Write penalties when using FAT partition table 683 * and updating "well aligned" (FS perspective) physical sectors on every 684 * transaction. 685 */ 686 static inline u16 ata_id_logical_sector_offset(const u16 *id, 687 u8 log2_per_phys) 688 { 689 u16 word_209 = id[209]; 690 691 if ((log2_per_phys > 1) && (word_209 & 0xc000) == 0x4000) { 692 u16 first = word_209 & 0x3fff; 693 if (first > 0) 694 return (1 << log2_per_phys) - first; 695 } 696 return 0; 697 } 698 699 static inline bool ata_id_has_lba48(const u16 *id) 700 { 701 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 702 return false; 703 if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2)) 704 return false; 705 return id[ATA_ID_COMMAND_SET_2] & (1 << 10); 706 } 707 708 static inline bool ata_id_lba48_enabled(const u16 *id) 709 { 710 if (ata_id_has_lba48(id) == 0) 711 return false; 712 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 713 return false; 714 return id[ATA_ID_CFS_ENABLE_2] & (1 << 10); 715 } 716 717 static inline bool ata_id_hpa_enabled(const u16 *id) 718 { 719 /* Yes children, word 83 valid bits cover word 82 data */ 720 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 721 return false; 722 /* And 87 covers 85-87 */ 723 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 724 return false; 725 /* Check command sets enabled as well as supported */ 726 if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0) 727 return false; 728 return id[ATA_ID_COMMAND_SET_1] & (1 << 10); 729 } 730 731 static inline bool ata_id_has_wcache(const u16 *id) 732 { 733 /* Yes children, word 83 valid bits cover word 82 data */ 734 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 735 return false; 736 return id[ATA_ID_COMMAND_SET_1] & (1 << 5); 737 } 738 739 static inline bool ata_id_has_pm(const u16 *id) 740 { 741 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 742 return false; 743 return id[ATA_ID_COMMAND_SET_1] & (1 << 3); 744 } 745 746 static inline bool ata_id_rahead_enabled(const u16 *id) 747 { 748 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 749 return false; 750 return id[ATA_ID_CFS_ENABLE_1] & (1 << 6); 751 } 752 753 static inline bool ata_id_wcache_enabled(const u16 *id) 754 { 755 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 756 return false; 757 return id[ATA_ID_CFS_ENABLE_1] & (1 << 5); 758 } 759 760 static inline bool ata_id_has_read_log_dma_ext(const u16 *id) 761 { 762 /* Word 86 must have bit 15 set */ 763 if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15))) 764 return false; 765 766 /* READ LOG DMA EXT support can be signaled either from word 119 767 * or from word 120. The format is the same for both words: Bit 768 * 15 must be cleared, bit 14 set and bit 3 set. 769 */ 770 if ((id[ATA_ID_COMMAND_SET_3] & 0xC008) == 0x4008 || 771 (id[ATA_ID_COMMAND_SET_4] & 0xC008) == 0x4008) 772 return true; 773 774 return false; 775 } 776 777 static inline bool ata_id_has_sense_reporting(const u16 *id) 778 { 779 if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15))) 780 return false; 781 return id[ATA_ID_COMMAND_SET_3] & (1 << 6); 782 } 783 784 static inline bool ata_id_sense_reporting_enabled(const u16 *id) 785 { 786 if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15))) 787 return false; 788 return id[ATA_ID_COMMAND_SET_4] & (1 << 6); 789 } 790 791 /** 792 * ata_id_major_version - get ATA level of drive 793 * @id: Identify data 794 * 795 * Caveats: 796 * ATA-1 considers identify optional 797 * ATA-2 introduces mandatory identify 798 * ATA-3 introduces word 80 and accurate reporting 799 * 800 * The practical impact of this is that ata_id_major_version cannot 801 * reliably report on drives below ATA3. 802 */ 803 804 static inline unsigned int ata_id_major_version(const u16 *id) 805 { 806 unsigned int mver; 807 808 if (id[ATA_ID_MAJOR_VER] == 0xFFFF) 809 return 0; 810 811 for (mver = 14; mver >= 1; mver--) 812 if (id[ATA_ID_MAJOR_VER] & (1 << mver)) 813 break; 814 return mver; 815 } 816 817 static inline bool ata_id_is_sata(const u16 *id) 818 { 819 /* 820 * See if word 93 is 0 AND drive is at least ATA-5 compatible 821 * verifying that word 80 by casting it to a signed type -- 822 * this trick allows us to filter out the reserved values of 823 * 0x0000 and 0xffff along with the earlier ATA revisions... 824 */ 825 if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020) 826 return true; 827 return false; 828 } 829 830 static inline bool ata_id_has_tpm(const u16 *id) 831 { 832 /* The TPM bits are only valid on ATA8 */ 833 if (ata_id_major_version(id) < 8) 834 return false; 835 if ((id[48] & 0xC000) != 0x4000) 836 return false; 837 return id[48] & (1 << 0); 838 } 839 840 static inline bool ata_id_has_dword_io(const u16 *id) 841 { 842 /* ATA 8 reuses this flag for "trusted" computing */ 843 if (ata_id_major_version(id) > 7) 844 return false; 845 return id[ATA_ID_DWORD_IO] & (1 << 0); 846 } 847 848 static inline bool ata_id_has_unload(const u16 *id) 849 { 850 if (ata_id_major_version(id) >= 7 && 851 (id[ATA_ID_CFSSE] & 0xC000) == 0x4000 && 852 id[ATA_ID_CFSSE] & (1 << 13)) 853 return true; 854 return false; 855 } 856 857 static inline bool ata_id_has_wwn(const u16 *id) 858 { 859 return (id[ATA_ID_CSF_DEFAULT] & 0xC100) == 0x4100; 860 } 861 862 static inline int ata_id_form_factor(const u16 *id) 863 { 864 u16 val = id[168]; 865 866 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff) 867 return 0; 868 869 val &= 0xf; 870 871 if (val > 5) 872 return 0; 873 874 return val; 875 } 876 877 static inline int ata_id_rotation_rate(const u16 *id) 878 { 879 u16 val = id[217]; 880 881 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff) 882 return 0; 883 884 if (val > 1 && val < 0x401) 885 return 0; 886 887 return val; 888 } 889 890 static inline bool ata_id_has_ncq_send_and_recv(const u16 *id) 891 { 892 return id[ATA_ID_SATA_CAPABILITY_2] & BIT(6); 893 } 894 895 static inline bool ata_id_has_ncq_non_data(const u16 *id) 896 { 897 return id[ATA_ID_SATA_CAPABILITY_2] & BIT(5); 898 } 899 900 static inline bool ata_id_has_trim(const u16 *id) 901 { 902 if (ata_id_major_version(id) >= 7 && 903 (id[ATA_ID_DATA_SET_MGMT] & 1)) 904 return true; 905 return false; 906 } 907 908 static inline bool ata_id_has_zero_after_trim(const u16 *id) 909 { 910 /* DSM supported, deterministic read, and read zero after trim set */ 911 if (ata_id_has_trim(id) && 912 (id[ATA_ID_ADDITIONAL_SUPP] & 0x4020) == 0x4020) 913 return true; 914 915 return false; 916 } 917 918 static inline bool ata_id_current_chs_valid(const u16 *id) 919 { 920 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command 921 has not been issued to the device then the values of 922 id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */ 923 return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */ 924 id[ATA_ID_CUR_CYLS] && /* cylinders in current translation */ 925 id[ATA_ID_CUR_HEADS] && /* heads in current translation */ 926 id[ATA_ID_CUR_HEADS] <= 16 && 927 id[ATA_ID_CUR_SECTORS]; /* sectors in current translation */ 928 } 929 930 static inline bool ata_id_is_cfa(const u16 *id) 931 { 932 if ((id[ATA_ID_CONFIG] == 0x848A) || /* Traditional CF */ 933 (id[ATA_ID_CONFIG] == 0x844A)) /* Delkin Devices CF */ 934 return true; 935 /* 936 * CF specs don't require specific value in the word 0 anymore and yet 937 * they forbid to report the ATA version in the word 80 and require the 938 * CFA feature set support to be indicated in the word 83 in this case. 939 * Unfortunately, some cards only follow either of this requirements, 940 * and while those that don't indicate CFA feature support need some 941 * sort of quirk list, it seems impractical for the ones that do... 942 */ 943 return (id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004; 944 } 945 946 static inline bool ata_id_is_ssd(const u16 *id) 947 { 948 return id[ATA_ID_ROT_SPEED] == 0x01; 949 } 950 951 static inline u8 ata_id_zoned_cap(const u16 *id) 952 { 953 return (id[ATA_ID_ADDITIONAL_SUPP] & 0x3); 954 } 955 956 static inline bool ata_id_pio_need_iordy(const u16 *id, const u8 pio) 957 { 958 /* CF spec. r4.1 Table 22 says no IORDY on PIO5 and PIO6. */ 959 if (pio > 4 && ata_id_is_cfa(id)) 960 return false; 961 /* For PIO3 and higher it is mandatory. */ 962 if (pio > 2) 963 return true; 964 /* Turn it on when possible. */ 965 return ata_id_has_iordy(id); 966 } 967 968 static inline bool ata_drive_40wire(const u16 *dev_id) 969 { 970 if (ata_id_is_sata(dev_id)) 971 return false; /* SATA */ 972 if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000) 973 return false; /* 80 wire */ 974 return true; 975 } 976 977 static inline bool ata_drive_40wire_relaxed(const u16 *dev_id) 978 { 979 if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000) 980 return false; /* 80 wire */ 981 return true; 982 } 983 984 static inline int atapi_cdb_len(const u16 *dev_id) 985 { 986 u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3; 987 switch (tmp) { 988 case 0: return 12; 989 case 1: return 16; 990 default: return -1; 991 } 992 } 993 994 static inline int atapi_command_packet_set(const u16 *dev_id) 995 { 996 return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f; 997 } 998 999 static inline bool atapi_id_dmadir(const u16 *dev_id) 1000 { 1001 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000); 1002 } 1003 1004 /* 1005 * ata_id_is_lba_capacity_ok() performs a sanity check on 1006 * the claimed LBA capacity value for the device. 1007 * 1008 * Returns 1 if LBA capacity looks sensible, 0 otherwise. 1009 * 1010 * It is called only once for each device. 1011 */ 1012 static inline bool ata_id_is_lba_capacity_ok(u16 *id) 1013 { 1014 unsigned long lba_sects, chs_sects, head, tail; 1015 1016 /* No non-LBA info .. so valid! */ 1017 if (id[ATA_ID_CYLS] == 0) 1018 return true; 1019 1020 lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY); 1021 1022 /* 1023 * The ATA spec tells large drives to return 1024 * C/H/S = 16383/16/63 independent of their size. 1025 * Some drives can be jumpered to use 15 heads instead of 16. 1026 * Some drives can be jumpered to use 4092 cyls instead of 16383. 1027 */ 1028 if ((id[ATA_ID_CYLS] == 16383 || 1029 (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) && 1030 id[ATA_ID_SECTORS] == 63 && 1031 (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) && 1032 (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS])) 1033 return true; 1034 1035 chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS]; 1036 1037 /* perform a rough sanity check on lba_sects: within 10% is OK */ 1038 if (lba_sects - chs_sects < chs_sects/10) 1039 return true; 1040 1041 /* some drives have the word order reversed */ 1042 head = (lba_sects >> 16) & 0xffff; 1043 tail = lba_sects & 0xffff; 1044 lba_sects = head | (tail << 16); 1045 1046 if (lba_sects - chs_sects < chs_sects/10) { 1047 *(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects); 1048 return true; /* LBA capacity is (now) good */ 1049 } 1050 1051 return false; /* LBA capacity value may be bad */ 1052 } 1053 1054 static inline void ata_id_to_hd_driveid(u16 *id) 1055 { 1056 #ifdef __BIG_ENDIAN 1057 /* accessed in struct hd_driveid as 8-bit values */ 1058 id[ATA_ID_MAX_MULTSECT] = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]); 1059 id[ATA_ID_CAPABILITY] = __cpu_to_le16(id[ATA_ID_CAPABILITY]); 1060 id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]); 1061 id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]); 1062 id[ATA_ID_MULTSECT] = __cpu_to_le16(id[ATA_ID_MULTSECT]); 1063 1064 /* as 32-bit values */ 1065 *(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY); 1066 *(u32 *)&id[ATA_ID_SPG] = ata_id_u32(id, ATA_ID_SPG); 1067 1068 /* as 64-bit value */ 1069 *(u64 *)&id[ATA_ID_LBA_CAPACITY_2] = 1070 ata_id_u64(id, ATA_ID_LBA_CAPACITY_2); 1071 #endif 1072 } 1073 1074 /* 1075 * Write LBA Range Entries to the buffer that will cover the extent from 1076 * sector to sector + count. This is used for TRIM and for ADD LBA(S) 1077 * TO NV CACHE PINNED SET. 1078 */ 1079 static inline unsigned ata_set_lba_range_entries(void *_buffer, 1080 unsigned num, u64 sector, unsigned long count) 1081 { 1082 __le64 *buffer = _buffer; 1083 unsigned i = 0, used_bytes; 1084 1085 while (i < num) { 1086 u64 entry = sector | 1087 ((u64)(count > 0xffff ? 0xffff : count) << 48); 1088 buffer[i++] = __cpu_to_le64(entry); 1089 if (count <= 0xffff) 1090 break; 1091 count -= 0xffff; 1092 sector += 0xffff; 1093 } 1094 1095 used_bytes = ALIGN(i * 8, 512); 1096 memset(buffer + i, 0, used_bytes - i * 8); 1097 return used_bytes; 1098 } 1099 1100 static inline bool ata_ok(u8 status) 1101 { 1102 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR)) 1103 == ATA_DRDY); 1104 } 1105 1106 static inline bool lba_28_ok(u64 block, u32 n_block) 1107 { 1108 /* check the ending block number: must be LESS THAN 0x0fffffff */ 1109 return ((block + n_block) < ((1 << 28) - 1)) && (n_block <= ATA_MAX_SECTORS); 1110 } 1111 1112 static inline bool lba_48_ok(u64 block, u32 n_block) 1113 { 1114 /* check the ending block number */ 1115 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= ATA_MAX_SECTORS_LBA48); 1116 } 1117 1118 #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff) 1119 #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16) 1120 #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff) 1121 #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf) 1122 1123 #endif /* __LINUX_ATA_H__ */ 1124