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/types.h> 33 34 /* defines only for the constants which don't work well as enums */ 35 #define ATA_DMA_BOUNDARY 0xffffUL 36 #define ATA_DMA_MASK 0xffffffffULL 37 38 enum { 39 /* various global constants */ 40 ATA_MAX_DEVICES = 2, /* per bus/port */ 41 ATA_MAX_PRD = 256, /* we could make these 256/256 */ 42 ATA_SECT_SIZE = 512, 43 ATA_MAX_SECTORS_128 = 128, 44 ATA_MAX_SECTORS = 256, 45 ATA_MAX_SECTORS_LBA48 = 65535,/* TODO: 65536? */ 46 ATA_MAX_SECTORS_TAPE = 65535, 47 48 ATA_ID_WORDS = 256, 49 ATA_ID_CONFIG = 0, 50 ATA_ID_CYLS = 1, 51 ATA_ID_HEADS = 3, 52 ATA_ID_SECTORS = 6, 53 ATA_ID_SERNO = 10, 54 ATA_ID_BUF_SIZE = 21, 55 ATA_ID_FW_REV = 23, 56 ATA_ID_PROD = 27, 57 ATA_ID_MAX_MULTSECT = 47, 58 ATA_ID_DWORD_IO = 48, 59 ATA_ID_CAPABILITY = 49, 60 ATA_ID_OLD_PIO_MODES = 51, 61 ATA_ID_OLD_DMA_MODES = 52, 62 ATA_ID_FIELD_VALID = 53, 63 ATA_ID_CUR_CYLS = 54, 64 ATA_ID_CUR_HEADS = 55, 65 ATA_ID_CUR_SECTORS = 56, 66 ATA_ID_MULTSECT = 59, 67 ATA_ID_LBA_CAPACITY = 60, 68 ATA_ID_SWDMA_MODES = 62, 69 ATA_ID_MWDMA_MODES = 63, 70 ATA_ID_PIO_MODES = 64, 71 ATA_ID_EIDE_DMA_MIN = 65, 72 ATA_ID_EIDE_DMA_TIME = 66, 73 ATA_ID_EIDE_PIO = 67, 74 ATA_ID_EIDE_PIO_IORDY = 68, 75 ATA_ID_QUEUE_DEPTH = 75, 76 ATA_ID_MAJOR_VER = 80, 77 ATA_ID_COMMAND_SET_1 = 82, 78 ATA_ID_COMMAND_SET_2 = 83, 79 ATA_ID_CFSSE = 84, 80 ATA_ID_CFS_ENABLE_1 = 85, 81 ATA_ID_CFS_ENABLE_2 = 86, 82 ATA_ID_CSF_DEFAULT = 87, 83 ATA_ID_UDMA_MODES = 88, 84 ATA_ID_HW_CONFIG = 93, 85 ATA_ID_SPG = 98, 86 ATA_ID_LBA_CAPACITY_2 = 100, 87 ATA_ID_LAST_LUN = 126, 88 ATA_ID_DLF = 128, 89 ATA_ID_CSFO = 129, 90 ATA_ID_CFA_POWER = 160, 91 ATA_ID_PIO4 = (1 << 1), 92 93 ATA_ID_SERNO_LEN = 20, 94 ATA_ID_FW_REV_LEN = 8, 95 ATA_ID_PROD_LEN = 40, 96 97 ATA_PCI_CTL_OFS = 2, 98 99 ATA_PIO0 = (1 << 0), 100 ATA_PIO1 = ATA_PIO0 | (1 << 1), 101 ATA_PIO2 = ATA_PIO1 | (1 << 2), 102 ATA_PIO3 = ATA_PIO2 | (1 << 3), 103 ATA_PIO4 = ATA_PIO3 | (1 << 4), 104 ATA_PIO5 = ATA_PIO4 | (1 << 5), 105 ATA_PIO6 = ATA_PIO5 | (1 << 6), 106 107 ATA_SWDMA0 = (1 << 0), 108 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1), 109 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2), 110 111 ATA_SWDMA2_ONLY = (1 << 2), 112 113 ATA_MWDMA0 = (1 << 0), 114 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1), 115 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2), 116 117 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2), 118 ATA_MWDMA2_ONLY = (1 << 2), 119 120 ATA_UDMA0 = (1 << 0), 121 ATA_UDMA1 = ATA_UDMA0 | (1 << 1), 122 ATA_UDMA2 = ATA_UDMA1 | (1 << 2), 123 ATA_UDMA3 = ATA_UDMA2 | (1 << 3), 124 ATA_UDMA4 = ATA_UDMA3 | (1 << 4), 125 ATA_UDMA5 = ATA_UDMA4 | (1 << 5), 126 ATA_UDMA6 = ATA_UDMA5 | (1 << 6), 127 ATA_UDMA7 = ATA_UDMA6 | (1 << 7), 128 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */ 129 130 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */ 131 132 /* DMA-related */ 133 ATA_PRD_SZ = 8, 134 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ), 135 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */ 136 137 ATA_DMA_TABLE_OFS = 4, 138 ATA_DMA_STATUS = 2, 139 ATA_DMA_CMD = 0, 140 ATA_DMA_WR = (1 << 3), 141 ATA_DMA_START = (1 << 0), 142 ATA_DMA_INTR = (1 << 2), 143 ATA_DMA_ERR = (1 << 1), 144 ATA_DMA_ACTIVE = (1 << 0), 145 146 /* bits in ATA command block registers */ 147 ATA_HOB = (1 << 7), /* LBA48 selector */ 148 ATA_NIEN = (1 << 1), /* disable-irq flag */ 149 ATA_LBA = (1 << 6), /* LBA28 selector */ 150 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */ 151 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */ 152 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */ 153 ATA_BUSY = (1 << 7), /* BSY status bit */ 154 ATA_DRDY = (1 << 6), /* device ready */ 155 ATA_DF = (1 << 5), /* device fault */ 156 ATA_DSC = (1 << 4), /* drive seek complete */ 157 ATA_DRQ = (1 << 3), /* data request i/o */ 158 ATA_CORR = (1 << 2), /* corrected data error */ 159 ATA_IDX = (1 << 1), /* index */ 160 ATA_ERR = (1 << 0), /* have an error */ 161 ATA_SRST = (1 << 2), /* software reset */ 162 ATA_ICRC = (1 << 7), /* interface CRC error */ 163 ATA_BBK = ATA_ICRC, /* pre-EIDE: block marked bad */ 164 ATA_UNC = (1 << 6), /* uncorrectable media error */ 165 ATA_MC = (1 << 5), /* media changed */ 166 ATA_IDNF = (1 << 4), /* ID not found */ 167 ATA_MCR = (1 << 3), /* media change requested */ 168 ATA_ABORTED = (1 << 2), /* command aborted */ 169 ATA_TRK0NF = (1 << 1), /* track 0 not found */ 170 ATA_AMNF = (1 << 0), /* address mark not found */ 171 ATAPI_LFS = 0xF0, /* last failed sense */ 172 ATAPI_EOM = ATA_TRK0NF, /* end of media */ 173 ATAPI_ILI = ATA_AMNF, /* illegal length indication */ 174 ATAPI_IO = (1 << 1), 175 ATAPI_COD = (1 << 0), 176 177 /* ATA command block registers */ 178 ATA_REG_DATA = 0x00, 179 ATA_REG_ERR = 0x01, 180 ATA_REG_NSECT = 0x02, 181 ATA_REG_LBAL = 0x03, 182 ATA_REG_LBAM = 0x04, 183 ATA_REG_LBAH = 0x05, 184 ATA_REG_DEVICE = 0x06, 185 ATA_REG_STATUS = 0x07, 186 187 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */ 188 ATA_REG_CMD = ATA_REG_STATUS, 189 ATA_REG_BYTEL = ATA_REG_LBAM, 190 ATA_REG_BYTEH = ATA_REG_LBAH, 191 ATA_REG_DEVSEL = ATA_REG_DEVICE, 192 ATA_REG_IRQ = ATA_REG_NSECT, 193 194 /* ATA device commands */ 195 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */ 196 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */ 197 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */ 198 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */ 199 ATA_CMD_EDD = 0x90, /* execute device diagnostic */ 200 ATA_CMD_FLUSH = 0xE7, 201 ATA_CMD_FLUSH_EXT = 0xEA, 202 ATA_CMD_ID_ATA = 0xEC, 203 ATA_CMD_ID_ATAPI = 0xA1, 204 ATA_CMD_READ = 0xC8, 205 ATA_CMD_READ_EXT = 0x25, 206 ATA_CMD_WRITE = 0xCA, 207 ATA_CMD_WRITE_EXT = 0x35, 208 ATA_CMD_WRITE_FUA_EXT = 0x3D, 209 ATA_CMD_FPDMA_READ = 0x60, 210 ATA_CMD_FPDMA_WRITE = 0x61, 211 ATA_CMD_PIO_READ = 0x20, 212 ATA_CMD_PIO_READ_EXT = 0x24, 213 ATA_CMD_PIO_WRITE = 0x30, 214 ATA_CMD_PIO_WRITE_EXT = 0x34, 215 ATA_CMD_READ_MULTI = 0xC4, 216 ATA_CMD_READ_MULTI_EXT = 0x29, 217 ATA_CMD_WRITE_MULTI = 0xC5, 218 ATA_CMD_WRITE_MULTI_EXT = 0x39, 219 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE, 220 ATA_CMD_SET_FEATURES = 0xEF, 221 ATA_CMD_SET_MULTI = 0xC6, 222 ATA_CMD_PACKET = 0xA0, 223 ATA_CMD_VERIFY = 0x40, 224 ATA_CMD_VERIFY_EXT = 0x42, 225 ATA_CMD_STANDBYNOW1 = 0xE0, 226 ATA_CMD_IDLEIMMEDIATE = 0xE1, 227 ATA_CMD_SLEEP = 0xE6, 228 ATA_CMD_INIT_DEV_PARAMS = 0x91, 229 ATA_CMD_READ_NATIVE_MAX = 0xF8, 230 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27, 231 ATA_CMD_SET_MAX = 0xF9, 232 ATA_CMD_SET_MAX_EXT = 0x37, 233 ATA_CMD_READ_LOG_EXT = 0x2f, 234 ATA_CMD_PMP_READ = 0xE4, 235 ATA_CMD_PMP_WRITE = 0xE8, 236 ATA_CMD_CONF_OVERLAY = 0xB1, 237 ATA_CMD_SEC_FREEZE_LOCK = 0xF5, 238 ATA_CMD_SMART = 0xB0, 239 ATA_CMD_MEDIA_LOCK = 0xDE, 240 ATA_CMD_MEDIA_UNLOCK = 0xDF, 241 /* marked obsolete in the ATA/ATAPI-7 spec */ 242 ATA_CMD_RESTORE = 0x10, 243 /* EXABYTE specific */ 244 ATA_EXABYTE_ENABLE_NEST = 0xF0, 245 246 /* READ_LOG_EXT pages */ 247 ATA_LOG_SATA_NCQ = 0x10, 248 249 /* READ/WRITE LONG (obsolete) */ 250 ATA_CMD_READ_LONG = 0x22, 251 ATA_CMD_READ_LONG_ONCE = 0x23, 252 ATA_CMD_WRITE_LONG = 0x32, 253 ATA_CMD_WRITE_LONG_ONCE = 0x33, 254 255 /* SETFEATURES stuff */ 256 SETFEATURES_XFER = 0x03, 257 XFER_UDMA_7 = 0x47, 258 XFER_UDMA_6 = 0x46, 259 XFER_UDMA_5 = 0x45, 260 XFER_UDMA_4 = 0x44, 261 XFER_UDMA_3 = 0x43, 262 XFER_UDMA_2 = 0x42, 263 XFER_UDMA_1 = 0x41, 264 XFER_UDMA_0 = 0x40, 265 XFER_MW_DMA_4 = 0x24, /* CFA only */ 266 XFER_MW_DMA_3 = 0x23, /* CFA only */ 267 XFER_MW_DMA_2 = 0x22, 268 XFER_MW_DMA_1 = 0x21, 269 XFER_MW_DMA_0 = 0x20, 270 XFER_SW_DMA_2 = 0x12, 271 XFER_SW_DMA_1 = 0x11, 272 XFER_SW_DMA_0 = 0x10, 273 XFER_PIO_6 = 0x0E, /* CFA only */ 274 XFER_PIO_5 = 0x0D, /* CFA only */ 275 XFER_PIO_4 = 0x0C, 276 XFER_PIO_3 = 0x0B, 277 XFER_PIO_2 = 0x0A, 278 XFER_PIO_1 = 0x09, 279 XFER_PIO_0 = 0x08, 280 XFER_PIO_SLOW = 0x00, 281 282 SETFEATURES_WC_ON = 0x02, /* Enable write cache */ 283 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */ 284 285 /* Enable/Disable Automatic Acoustic Management */ 286 SETFEATURES_AAM_ON = 0x42, 287 SETFEATURES_AAM_OFF = 0xC2, 288 289 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */ 290 291 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */ 292 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */ 293 294 /* SETFEATURE Sector counts for SATA features */ 295 SATA_AN = 0x05, /* Asynchronous Notification */ 296 SATA_DIPM = 0x03, /* Device Initiated Power Management */ 297 298 /* feature values for SET_MAX */ 299 ATA_SET_MAX_ADDR = 0x00, 300 ATA_SET_MAX_PASSWD = 0x01, 301 ATA_SET_MAX_LOCK = 0x02, 302 ATA_SET_MAX_UNLOCK = 0x03, 303 ATA_SET_MAX_FREEZE_LOCK = 0x04, 304 305 /* feature values for DEVICE CONFIGURATION OVERLAY */ 306 ATA_DCO_RESTORE = 0xC0, 307 ATA_DCO_FREEZE_LOCK = 0xC1, 308 ATA_DCO_IDENTIFY = 0xC2, 309 ATA_DCO_SET = 0xC3, 310 311 /* feature values for SMART */ 312 ATA_SMART_ENABLE = 0xD8, 313 ATA_SMART_READ_VALUES = 0xD0, 314 ATA_SMART_READ_THRESHOLDS = 0xD1, 315 316 /* password used in LBA Mid / LBA High for executing SMART commands */ 317 ATA_SMART_LBAM_PASS = 0x4F, 318 ATA_SMART_LBAH_PASS = 0xC2, 319 320 /* ATAPI stuff */ 321 ATAPI_PKT_DMA = (1 << 0), 322 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir: 323 0=to device, 1=to host */ 324 ATAPI_CDB_LEN = 16, 325 326 /* PMP stuff */ 327 SATA_PMP_MAX_PORTS = 15, 328 SATA_PMP_CTRL_PORT = 15, 329 330 SATA_PMP_GSCR_DWORDS = 128, 331 SATA_PMP_GSCR_PROD_ID = 0, 332 SATA_PMP_GSCR_REV = 1, 333 SATA_PMP_GSCR_PORT_INFO = 2, 334 SATA_PMP_GSCR_ERROR = 32, 335 SATA_PMP_GSCR_ERROR_EN = 33, 336 SATA_PMP_GSCR_FEAT = 64, 337 SATA_PMP_GSCR_FEAT_EN = 96, 338 339 SATA_PMP_PSCR_STATUS = 0, 340 SATA_PMP_PSCR_ERROR = 1, 341 SATA_PMP_PSCR_CONTROL = 2, 342 343 SATA_PMP_FEAT_BIST = (1 << 0), 344 SATA_PMP_FEAT_PMREQ = (1 << 1), 345 SATA_PMP_FEAT_DYNSSC = (1 << 2), 346 SATA_PMP_FEAT_NOTIFY = (1 << 3), 347 348 /* cable types */ 349 ATA_CBL_NONE = 0, 350 ATA_CBL_PATA40 = 1, 351 ATA_CBL_PATA80 = 2, 352 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */ 353 ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */ 354 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */ 355 ATA_CBL_SATA = 6, 356 357 /* SATA Status and Control Registers */ 358 SCR_STATUS = 0, 359 SCR_ERROR = 1, 360 SCR_CONTROL = 2, 361 SCR_ACTIVE = 3, 362 SCR_NOTIFICATION = 4, 363 364 /* SError bits */ 365 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */ 366 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */ 367 SERR_DATA = (1 << 8), /* unrecovered data error */ 368 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */ 369 SERR_PROTOCOL = (1 << 10), /* protocol violation */ 370 SERR_INTERNAL = (1 << 11), /* host internal error */ 371 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */ 372 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */ 373 SERR_COMM_WAKE = (1 << 18), /* Comm wake */ 374 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */ 375 SERR_DISPARITY = (1 << 20), /* Disparity */ 376 SERR_CRC = (1 << 21), /* CRC error */ 377 SERR_HANDSHAKE = (1 << 22), /* Handshake error */ 378 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */ 379 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */ 380 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */ 381 SERR_DEV_XCHG = (1 << 26), /* device exchanged */ 382 383 /* struct ata_taskfile flags */ 384 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */ 385 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */ 386 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */ 387 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */ 388 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */ 389 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */ 390 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */ 391 392 /* protocol flags */ 393 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */ 394 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */ 395 ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA, 396 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */ 397 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */ 398 }; 399 400 enum ata_tf_protocols { 401 /* ATA taskfile protocols */ 402 ATA_PROT_UNKNOWN, /* unknown/invalid */ 403 ATA_PROT_NODATA, /* no data */ 404 ATA_PROT_PIO, /* PIO data xfer */ 405 ATA_PROT_DMA, /* DMA */ 406 ATA_PROT_NCQ, /* NCQ */ 407 ATAPI_PROT_NODATA, /* packet command, no data */ 408 ATAPI_PROT_PIO, /* packet command, PIO data xfer*/ 409 ATAPI_PROT_DMA, /* packet command with special DMA sauce */ 410 }; 411 412 enum ata_ioctls { 413 ATA_IOC_GET_IO32 = 0x309, 414 ATA_IOC_SET_IO32 = 0x324, 415 }; 416 417 /* core structures */ 418 419 struct ata_prd { 420 __le32 addr; 421 __le32 flags_len; 422 }; 423 424 struct ata_taskfile { 425 unsigned long flags; /* ATA_TFLAG_xxx */ 426 u8 protocol; /* ATA_PROT_xxx */ 427 428 u8 ctl; /* control reg */ 429 430 u8 hob_feature; /* additional data */ 431 u8 hob_nsect; /* to support LBA48 */ 432 u8 hob_lbal; 433 u8 hob_lbam; 434 u8 hob_lbah; 435 436 u8 feature; 437 u8 nsect; 438 u8 lbal; 439 u8 lbam; 440 u8 lbah; 441 442 u8 device; 443 444 u8 command; /* IO operation */ 445 }; 446 447 /* 448 * protocol tests 449 */ 450 static inline unsigned int ata_prot_flags(u8 prot) 451 { 452 switch (prot) { 453 case ATA_PROT_NODATA: 454 return 0; 455 case ATA_PROT_PIO: 456 return ATA_PROT_FLAG_PIO; 457 case ATA_PROT_DMA: 458 return ATA_PROT_FLAG_DMA; 459 case ATA_PROT_NCQ: 460 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ; 461 case ATAPI_PROT_NODATA: 462 return ATA_PROT_FLAG_ATAPI; 463 case ATAPI_PROT_PIO: 464 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO; 465 case ATAPI_PROT_DMA: 466 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA; 467 } 468 return 0; 469 } 470 471 static inline int ata_is_atapi(u8 prot) 472 { 473 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI; 474 } 475 476 static inline int ata_is_nodata(u8 prot) 477 { 478 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA); 479 } 480 481 static inline int ata_is_pio(u8 prot) 482 { 483 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO; 484 } 485 486 static inline int ata_is_dma(u8 prot) 487 { 488 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA; 489 } 490 491 static inline int ata_is_ncq(u8 prot) 492 { 493 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ; 494 } 495 496 static inline int ata_is_data(u8 prot) 497 { 498 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA; 499 } 500 501 /* 502 * id tests 503 */ 504 #define ata_id_is_ata(id) (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0) 505 #define ata_id_has_lba(id) ((id)[ATA_ID_CAPABILITY] & (1 << 9)) 506 #define ata_id_has_dma(id) ((id)[ATA_ID_CAPABILITY] & (1 << 8)) 507 #define ata_id_has_ncq(id) ((id)[76] & (1 << 8)) 508 #define ata_id_queue_depth(id) (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1) 509 #define ata_id_removeable(id) ((id)[ATA_ID_CONFIG] & (1 << 7)) 510 #define ata_id_has_atapi_AN(id) \ 511 ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \ 512 ((id)[78] & (1 << 5)) ) 513 #define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10)) 514 #define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11)) 515 #define ata_id_u32(id,n) \ 516 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)])) 517 #define ata_id_u64(id,n) \ 518 ( ((u64) (id)[(n) + 3] << 48) | \ 519 ((u64) (id)[(n) + 2] << 32) | \ 520 ((u64) (id)[(n) + 1] << 16) | \ 521 ((u64) (id)[(n) + 0]) ) 522 523 #define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20) 524 525 static inline bool ata_id_has_hipm(const u16 *id) 526 { 527 u16 val = id[76]; 528 529 if (val == 0 || val == 0xffff) 530 return false; 531 532 return val & (1 << 9); 533 } 534 535 static inline bool ata_id_has_dipm(const u16 *id) 536 { 537 u16 val = id[78]; 538 539 if (val == 0 || val == 0xffff) 540 return false; 541 542 return val & (1 << 3); 543 } 544 545 546 static inline int ata_id_has_fua(const u16 *id) 547 { 548 if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000) 549 return 0; 550 return id[ATA_ID_CFSSE] & (1 << 6); 551 } 552 553 static inline int ata_id_has_flush(const u16 *id) 554 { 555 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 556 return 0; 557 return id[ATA_ID_COMMAND_SET_2] & (1 << 12); 558 } 559 560 static inline int ata_id_has_flush_ext(const u16 *id) 561 { 562 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 563 return 0; 564 return id[ATA_ID_COMMAND_SET_2] & (1 << 13); 565 } 566 567 static inline int ata_id_has_lba48(const u16 *id) 568 { 569 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 570 return 0; 571 if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2)) 572 return 0; 573 return id[ATA_ID_COMMAND_SET_2] & (1 << 10); 574 } 575 576 static inline int ata_id_hpa_enabled(const u16 *id) 577 { 578 /* Yes children, word 83 valid bits cover word 82 data */ 579 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 580 return 0; 581 /* And 87 covers 85-87 */ 582 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 583 return 0; 584 /* Check command sets enabled as well as supported */ 585 if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0) 586 return 0; 587 return id[ATA_ID_COMMAND_SET_1] & (1 << 10); 588 } 589 590 static inline int ata_id_has_wcache(const u16 *id) 591 { 592 /* Yes children, word 83 valid bits cover word 82 data */ 593 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 594 return 0; 595 return id[ATA_ID_COMMAND_SET_1] & (1 << 5); 596 } 597 598 static inline int ata_id_has_pm(const u16 *id) 599 { 600 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) 601 return 0; 602 return id[ATA_ID_COMMAND_SET_1] & (1 << 3); 603 } 604 605 static inline int ata_id_rahead_enabled(const u16 *id) 606 { 607 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 608 return 0; 609 return id[ATA_ID_CFS_ENABLE_1] & (1 << 6); 610 } 611 612 static inline int ata_id_wcache_enabled(const u16 *id) 613 { 614 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) 615 return 0; 616 return id[ATA_ID_CFS_ENABLE_1] & (1 << 5); 617 } 618 619 /** 620 * ata_id_major_version - get ATA level of drive 621 * @id: Identify data 622 * 623 * Caveats: 624 * ATA-1 considers identify optional 625 * ATA-2 introduces mandatory identify 626 * ATA-3 introduces word 80 and accurate reporting 627 * 628 * The practical impact of this is that ata_id_major_version cannot 629 * reliably report on drives below ATA3. 630 */ 631 632 static inline unsigned int ata_id_major_version(const u16 *id) 633 { 634 unsigned int mver; 635 636 if (id[ATA_ID_MAJOR_VER] == 0xFFFF) 637 return 0; 638 639 for (mver = 14; mver >= 1; mver--) 640 if (id[ATA_ID_MAJOR_VER] & (1 << mver)) 641 break; 642 return mver; 643 } 644 645 static inline int ata_id_is_sata(const u16 *id) 646 { 647 return ata_id_major_version(id) >= 5 && id[ATA_ID_HW_CONFIG] == 0; 648 } 649 650 static inline int ata_id_has_tpm(const u16 *id) 651 { 652 /* The TPM bits are only valid on ATA8 */ 653 if (ata_id_major_version(id) < 8) 654 return 0; 655 if ((id[48] & 0xC000) != 0x4000) 656 return 0; 657 return id[48] & (1 << 0); 658 } 659 660 static inline int ata_id_has_dword_io(const u16 *id) 661 { 662 /* ATA 8 reuses this flag for "trusted" computing */ 663 if (ata_id_major_version(id) > 7) 664 return 0; 665 if (id[ATA_ID_DWORD_IO] & (1 << 0)) 666 return 1; 667 return 0; 668 } 669 670 static inline int ata_id_current_chs_valid(const u16 *id) 671 { 672 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command 673 has not been issued to the device then the values of 674 id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */ 675 return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */ 676 id[ATA_ID_CUR_CYLS] && /* cylinders in current translation */ 677 id[ATA_ID_CUR_HEADS] && /* heads in current translation */ 678 id[ATA_ID_CUR_HEADS] <= 16 && 679 id[ATA_ID_CUR_SECTORS]; /* sectors in current translation */ 680 } 681 682 static inline int ata_id_is_cfa(const u16 *id) 683 { 684 if (id[ATA_ID_CONFIG] == 0x848A) /* Standard CF */ 685 return 1; 686 /* Could be CF hiding as standard ATA */ 687 if (ata_id_major_version(id) >= 3 && 688 id[ATA_ID_COMMAND_SET_1] != 0xFFFF && 689 (id[ATA_ID_COMMAND_SET_1] & (1 << 2))) 690 return 1; 691 return 0; 692 } 693 694 static inline int ata_drive_40wire(const u16 *dev_id) 695 { 696 if (ata_id_is_sata(dev_id)) 697 return 0; /* SATA */ 698 if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000) 699 return 0; /* 80 wire */ 700 return 1; 701 } 702 703 static inline int ata_drive_40wire_relaxed(const u16 *dev_id) 704 { 705 if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000) 706 return 0; /* 80 wire */ 707 return 1; 708 } 709 710 static inline int atapi_cdb_len(const u16 *dev_id) 711 { 712 u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3; 713 switch (tmp) { 714 case 0: return 12; 715 case 1: return 16; 716 default: return -1; 717 } 718 } 719 720 static inline int atapi_command_packet_set(const u16 *dev_id) 721 { 722 return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f; 723 } 724 725 static inline int atapi_id_dmadir(const u16 *dev_id) 726 { 727 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000); 728 } 729 730 static inline int is_multi_taskfile(struct ata_taskfile *tf) 731 { 732 return (tf->command == ATA_CMD_READ_MULTI) || 733 (tf->command == ATA_CMD_WRITE_MULTI) || 734 (tf->command == ATA_CMD_READ_MULTI_EXT) || 735 (tf->command == ATA_CMD_WRITE_MULTI_EXT) || 736 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); 737 } 738 739 static inline int ata_ok(u8 status) 740 { 741 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR)) 742 == ATA_DRDY); 743 } 744 745 static inline int lba_28_ok(u64 block, u32 n_block) 746 { 747 /* check the ending block number */ 748 return ((block + n_block - 1) < ((u64)1 << 28)) && (n_block <= 256); 749 } 750 751 static inline int lba_48_ok(u64 block, u32 n_block) 752 { 753 /* check the ending block number */ 754 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536); 755 } 756 757 #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff) 758 #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16) 759 #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff) 760 #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf) 761 762 #endif /* __LINUX_ATA_H__ */ 763