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_SERNO = 10, 50 ATA_ID_FW_REV = 23, 51 ATA_ID_PROD = 27, 52 ATA_ID_OLD_PIO_MODES = 51, 53 ATA_ID_FIELD_VALID = 53, 54 ATA_ID_MWDMA_MODES = 63, 55 ATA_ID_PIO_MODES = 64, 56 ATA_ID_EIDE_DMA_MIN = 65, 57 ATA_ID_EIDE_PIO = 67, 58 ATA_ID_EIDE_PIO_IORDY = 68, 59 ATA_ID_UDMA_MODES = 88, 60 ATA_ID_MAJOR_VER = 80, 61 ATA_ID_PIO4 = (1 << 1), 62 63 ATA_ID_SERNO_LEN = 20, 64 ATA_ID_FW_REV_LEN = 8, 65 ATA_ID_PROD_LEN = 40, 66 67 ATA_PCI_CTL_OFS = 2, 68 69 ATA_PIO0 = (1 << 0), 70 ATA_PIO1 = ATA_PIO0 | (1 << 1), 71 ATA_PIO2 = ATA_PIO1 | (1 << 2), 72 ATA_PIO3 = ATA_PIO2 | (1 << 3), 73 ATA_PIO4 = ATA_PIO3 | (1 << 4), 74 ATA_PIO5 = ATA_PIO4 | (1 << 5), 75 ATA_PIO6 = ATA_PIO5 | (1 << 6), 76 77 ATA_SWDMA0 = (1 << 0), 78 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1), 79 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2), 80 81 ATA_SWDMA2_ONLY = (1 << 2), 82 83 ATA_MWDMA0 = (1 << 0), 84 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1), 85 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2), 86 87 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2), 88 ATA_MWDMA2_ONLY = (1 << 2), 89 90 ATA_UDMA0 = (1 << 0), 91 ATA_UDMA1 = ATA_UDMA0 | (1 << 1), 92 ATA_UDMA2 = ATA_UDMA1 | (1 << 2), 93 ATA_UDMA3 = ATA_UDMA2 | (1 << 3), 94 ATA_UDMA4 = ATA_UDMA3 | (1 << 4), 95 ATA_UDMA5 = ATA_UDMA4 | (1 << 5), 96 ATA_UDMA6 = ATA_UDMA5 | (1 << 6), 97 ATA_UDMA7 = ATA_UDMA6 | (1 << 7), 98 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */ 99 100 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */ 101 102 /* DMA-related */ 103 ATA_PRD_SZ = 8, 104 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ), 105 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */ 106 107 ATA_DMA_TABLE_OFS = 4, 108 ATA_DMA_STATUS = 2, 109 ATA_DMA_CMD = 0, 110 ATA_DMA_WR = (1 << 3), 111 ATA_DMA_START = (1 << 0), 112 ATA_DMA_INTR = (1 << 2), 113 ATA_DMA_ERR = (1 << 1), 114 ATA_DMA_ACTIVE = (1 << 0), 115 116 /* bits in ATA command block registers */ 117 ATA_HOB = (1 << 7), /* LBA48 selector */ 118 ATA_NIEN = (1 << 1), /* disable-irq flag */ 119 ATA_LBA = (1 << 6), /* LBA28 selector */ 120 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */ 121 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */ 122 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */ 123 ATA_BUSY = (1 << 7), /* BSY status bit */ 124 ATA_DRDY = (1 << 6), /* device ready */ 125 ATA_DF = (1 << 5), /* device fault */ 126 ATA_DRQ = (1 << 3), /* data request i/o */ 127 ATA_ERR = (1 << 0), /* have an error */ 128 ATA_SRST = (1 << 2), /* software reset */ 129 ATA_ICRC = (1 << 7), /* interface CRC error */ 130 ATA_UNC = (1 << 6), /* uncorrectable media error */ 131 ATA_IDNF = (1 << 4), /* ID not found */ 132 ATA_ABORTED = (1 << 2), /* command aborted */ 133 134 /* ATA command block registers */ 135 ATA_REG_DATA = 0x00, 136 ATA_REG_ERR = 0x01, 137 ATA_REG_NSECT = 0x02, 138 ATA_REG_LBAL = 0x03, 139 ATA_REG_LBAM = 0x04, 140 ATA_REG_LBAH = 0x05, 141 ATA_REG_DEVICE = 0x06, 142 ATA_REG_STATUS = 0x07, 143 144 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */ 145 ATA_REG_CMD = ATA_REG_STATUS, 146 ATA_REG_BYTEL = ATA_REG_LBAM, 147 ATA_REG_BYTEH = ATA_REG_LBAH, 148 ATA_REG_DEVSEL = ATA_REG_DEVICE, 149 ATA_REG_IRQ = ATA_REG_NSECT, 150 151 /* ATA device commands */ 152 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */ 153 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */ 154 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */ 155 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */ 156 ATA_CMD_EDD = 0x90, /* execute device diagnostic */ 157 ATA_CMD_FLUSH = 0xE7, 158 ATA_CMD_FLUSH_EXT = 0xEA, 159 ATA_CMD_ID_ATA = 0xEC, 160 ATA_CMD_ID_ATAPI = 0xA1, 161 ATA_CMD_READ = 0xC8, 162 ATA_CMD_READ_EXT = 0x25, 163 ATA_CMD_WRITE = 0xCA, 164 ATA_CMD_WRITE_EXT = 0x35, 165 ATA_CMD_WRITE_FUA_EXT = 0x3D, 166 ATA_CMD_FPDMA_READ = 0x60, 167 ATA_CMD_FPDMA_WRITE = 0x61, 168 ATA_CMD_PIO_READ = 0x20, 169 ATA_CMD_PIO_READ_EXT = 0x24, 170 ATA_CMD_PIO_WRITE = 0x30, 171 ATA_CMD_PIO_WRITE_EXT = 0x34, 172 ATA_CMD_READ_MULTI = 0xC4, 173 ATA_CMD_READ_MULTI_EXT = 0x29, 174 ATA_CMD_WRITE_MULTI = 0xC5, 175 ATA_CMD_WRITE_MULTI_EXT = 0x39, 176 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE, 177 ATA_CMD_SET_FEATURES = 0xEF, 178 ATA_CMD_SET_MULTI = 0xC6, 179 ATA_CMD_PACKET = 0xA0, 180 ATA_CMD_VERIFY = 0x40, 181 ATA_CMD_VERIFY_EXT = 0x42, 182 ATA_CMD_STANDBYNOW1 = 0xE0, 183 ATA_CMD_IDLEIMMEDIATE = 0xE1, 184 ATA_CMD_SLEEP = 0xE6, 185 ATA_CMD_INIT_DEV_PARAMS = 0x91, 186 ATA_CMD_READ_NATIVE_MAX = 0xF8, 187 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27, 188 ATA_CMD_SET_MAX = 0xF9, 189 ATA_CMD_SET_MAX_EXT = 0x37, 190 ATA_CMD_READ_LOG_EXT = 0x2f, 191 ATA_CMD_PMP_READ = 0xE4, 192 ATA_CMD_PMP_WRITE = 0xE8, 193 194 /* READ_LOG_EXT pages */ 195 ATA_LOG_SATA_NCQ = 0x10, 196 197 /* READ/WRITE LONG (obsolete) */ 198 ATA_CMD_READ_LONG = 0x22, 199 ATA_CMD_READ_LONG_ONCE = 0x23, 200 ATA_CMD_WRITE_LONG = 0x32, 201 ATA_CMD_WRITE_LONG_ONCE = 0x33, 202 203 /* SETFEATURES stuff */ 204 SETFEATURES_XFER = 0x03, 205 XFER_UDMA_7 = 0x47, 206 XFER_UDMA_6 = 0x46, 207 XFER_UDMA_5 = 0x45, 208 XFER_UDMA_4 = 0x44, 209 XFER_UDMA_3 = 0x43, 210 XFER_UDMA_2 = 0x42, 211 XFER_UDMA_1 = 0x41, 212 XFER_UDMA_0 = 0x40, 213 XFER_MW_DMA_4 = 0x24, /* CFA only */ 214 XFER_MW_DMA_3 = 0x23, /* CFA only */ 215 XFER_MW_DMA_2 = 0x22, 216 XFER_MW_DMA_1 = 0x21, 217 XFER_MW_DMA_0 = 0x20, 218 XFER_SW_DMA_2 = 0x12, 219 XFER_SW_DMA_1 = 0x11, 220 XFER_SW_DMA_0 = 0x10, 221 XFER_PIO_6 = 0x0E, /* CFA only */ 222 XFER_PIO_5 = 0x0D, /* CFA only */ 223 XFER_PIO_4 = 0x0C, 224 XFER_PIO_3 = 0x0B, 225 XFER_PIO_2 = 0x0A, 226 XFER_PIO_1 = 0x09, 227 XFER_PIO_0 = 0x08, 228 XFER_PIO_SLOW = 0x00, 229 230 SETFEATURES_WC_ON = 0x02, /* Enable write cache */ 231 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */ 232 233 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */ 234 235 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */ 236 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */ 237 238 /* SETFEATURE Sector counts for SATA features */ 239 SATA_AN = 0x05, /* Asynchronous Notification */ 240 SATA_DIPM = 0x03, /* Device Initiated Power Management */ 241 242 /* ATAPI stuff */ 243 ATAPI_PKT_DMA = (1 << 0), 244 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir: 245 0=to device, 1=to host */ 246 ATAPI_CDB_LEN = 16, 247 248 /* PMP stuff */ 249 SATA_PMP_MAX_PORTS = 15, 250 SATA_PMP_CTRL_PORT = 15, 251 252 SATA_PMP_GSCR_DWORDS = 128, 253 SATA_PMP_GSCR_PROD_ID = 0, 254 SATA_PMP_GSCR_REV = 1, 255 SATA_PMP_GSCR_PORT_INFO = 2, 256 SATA_PMP_GSCR_ERROR = 32, 257 SATA_PMP_GSCR_ERROR_EN = 33, 258 SATA_PMP_GSCR_FEAT = 64, 259 SATA_PMP_GSCR_FEAT_EN = 96, 260 261 SATA_PMP_PSCR_STATUS = 0, 262 SATA_PMP_PSCR_ERROR = 1, 263 SATA_PMP_PSCR_CONTROL = 2, 264 265 SATA_PMP_FEAT_BIST = (1 << 0), 266 SATA_PMP_FEAT_PMREQ = (1 << 1), 267 SATA_PMP_FEAT_DYNSSC = (1 << 2), 268 SATA_PMP_FEAT_NOTIFY = (1 << 3), 269 270 /* cable types */ 271 ATA_CBL_NONE = 0, 272 ATA_CBL_PATA40 = 1, 273 ATA_CBL_PATA80 = 2, 274 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */ 275 ATA_CBL_PATA_UNK = 4, 276 ATA_CBL_SATA = 5, 277 278 /* SATA Status and Control Registers */ 279 SCR_STATUS = 0, 280 SCR_ERROR = 1, 281 SCR_CONTROL = 2, 282 SCR_ACTIVE = 3, 283 SCR_NOTIFICATION = 4, 284 285 /* SError bits */ 286 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */ 287 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */ 288 SERR_DATA = (1 << 8), /* unrecovered data error */ 289 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */ 290 SERR_PROTOCOL = (1 << 10), /* protocol violation */ 291 SERR_INTERNAL = (1 << 11), /* host internal error */ 292 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */ 293 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */ 294 SERR_COMM_WAKE = (1 << 18), /* Comm wake */ 295 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */ 296 SERR_DISPARITY = (1 << 20), /* Disparity */ 297 SERR_CRC = (1 << 21), /* CRC error */ 298 SERR_HANDSHAKE = (1 << 22), /* Handshake error */ 299 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */ 300 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */ 301 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */ 302 SERR_DEV_XCHG = (1 << 26), /* device exchanged */ 303 304 /* struct ata_taskfile flags */ 305 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */ 306 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */ 307 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */ 308 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */ 309 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */ 310 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */ 311 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */ 312 }; 313 314 enum ata_tf_protocols { 315 /* ATA taskfile protocols */ 316 ATA_PROT_UNKNOWN, /* unknown/invalid */ 317 ATA_PROT_NODATA, /* no data */ 318 ATA_PROT_PIO, /* PIO data xfer */ 319 ATA_PROT_DMA, /* DMA */ 320 ATA_PROT_NCQ, /* NCQ */ 321 ATA_PROT_ATAPI, /* packet command, PIO data xfer*/ 322 ATA_PROT_ATAPI_NODATA, /* packet command, no data */ 323 ATA_PROT_ATAPI_DMA, /* packet command with special DMA sauce */ 324 }; 325 326 enum ata_ioctls { 327 ATA_IOC_GET_IO32 = 0x309, 328 ATA_IOC_SET_IO32 = 0x324, 329 }; 330 331 /* core structures */ 332 333 struct ata_prd { 334 u32 addr; 335 u32 flags_len; 336 }; 337 338 struct ata_taskfile { 339 unsigned long flags; /* ATA_TFLAG_xxx */ 340 u8 protocol; /* ATA_PROT_xxx */ 341 342 u8 ctl; /* control reg */ 343 344 u8 hob_feature; /* additional data */ 345 u8 hob_nsect; /* to support LBA48 */ 346 u8 hob_lbal; 347 u8 hob_lbam; 348 u8 hob_lbah; 349 350 u8 feature; 351 u8 nsect; 352 u8 lbal; 353 u8 lbam; 354 u8 lbah; 355 356 u8 device; 357 358 u8 command; /* IO operation */ 359 }; 360 361 #define ata_id_is_ata(id) (((id)[0] & (1 << 15)) == 0) 362 #define ata_id_has_lba(id) ((id)[49] & (1 << 9)) 363 #define ata_id_has_dma(id) ((id)[49] & (1 << 8)) 364 #define ata_id_has_ncq(id) ((id)[76] & (1 << 8)) 365 #define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1) 366 #define ata_id_removeable(id) ((id)[0] & (1 << 7)) 367 #define ata_id_has_dword_io(id) ((id)[48] & (1 << 0)) 368 #define ata_id_has_atapi_AN(id) \ 369 ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \ 370 ((id)[78] & (1 << 5)) ) 371 #define ata_id_iordy_disable(id) ((id)[49] & (1 << 10)) 372 #define ata_id_has_iordy(id) ((id)[49] & (1 << 11)) 373 #define ata_id_u32(id,n) \ 374 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)])) 375 #define ata_id_u64(id,n) \ 376 ( ((u64) (id)[(n) + 3] << 48) | \ 377 ((u64) (id)[(n) + 2] << 32) | \ 378 ((u64) (id)[(n) + 1] << 16) | \ 379 ((u64) (id)[(n) + 0]) ) 380 381 #define ata_id_cdb_intr(id) (((id)[0] & 0x60) == 0x20) 382 383 static inline bool ata_id_has_hipm(const u16 *id) 384 { 385 u16 val = id[76]; 386 387 if (val == 0 || val == 0xffff) 388 return false; 389 390 return val & (1 << 9); 391 } 392 393 static inline bool ata_id_has_dipm(const u16 *id) 394 { 395 u16 val = id[78]; 396 397 if (val == 0 || val == 0xffff) 398 return false; 399 400 return val & (1 << 3); 401 } 402 403 static inline int ata_id_has_fua(const u16 *id) 404 { 405 if ((id[84] & 0xC000) != 0x4000) 406 return 0; 407 return id[84] & (1 << 6); 408 } 409 410 static inline int ata_id_has_flush(const u16 *id) 411 { 412 if ((id[83] & 0xC000) != 0x4000) 413 return 0; 414 return id[83] & (1 << 12); 415 } 416 417 static inline int ata_id_has_flush_ext(const u16 *id) 418 { 419 if ((id[83] & 0xC000) != 0x4000) 420 return 0; 421 return id[83] & (1 << 13); 422 } 423 424 static inline int ata_id_has_lba48(const u16 *id) 425 { 426 if ((id[83] & 0xC000) != 0x4000) 427 return 0; 428 if (!ata_id_u64(id, 100)) 429 return 0; 430 return id[83] & (1 << 10); 431 } 432 433 static inline int ata_id_hpa_enabled(const u16 *id) 434 { 435 /* Yes children, word 83 valid bits cover word 82 data */ 436 if ((id[83] & 0xC000) != 0x4000) 437 return 0; 438 /* And 87 covers 85-87 */ 439 if ((id[87] & 0xC000) != 0x4000) 440 return 0; 441 /* Check command sets enabled as well as supported */ 442 if ((id[85] & ( 1 << 10)) == 0) 443 return 0; 444 return id[82] & (1 << 10); 445 } 446 447 static inline int ata_id_has_wcache(const u16 *id) 448 { 449 /* Yes children, word 83 valid bits cover word 82 data */ 450 if ((id[83] & 0xC000) != 0x4000) 451 return 0; 452 return id[82] & (1 << 5); 453 } 454 455 static inline int ata_id_has_pm(const u16 *id) 456 { 457 if ((id[83] & 0xC000) != 0x4000) 458 return 0; 459 return id[82] & (1 << 3); 460 } 461 462 static inline int ata_id_rahead_enabled(const u16 *id) 463 { 464 if ((id[87] & 0xC000) != 0x4000) 465 return 0; 466 return id[85] & (1 << 6); 467 } 468 469 static inline int ata_id_wcache_enabled(const u16 *id) 470 { 471 if ((id[87] & 0xC000) != 0x4000) 472 return 0; 473 return id[85] & (1 << 5); 474 } 475 476 /** 477 * ata_id_major_version - get ATA level of drive 478 * @id: Identify data 479 * 480 * Caveats: 481 * ATA-1 considers identify optional 482 * ATA-2 introduces mandatory identify 483 * ATA-3 introduces word 80 and accurate reporting 484 * 485 * The practical impact of this is that ata_id_major_version cannot 486 * reliably report on drives below ATA3. 487 */ 488 489 static inline unsigned int ata_id_major_version(const u16 *id) 490 { 491 unsigned int mver; 492 493 if (id[ATA_ID_MAJOR_VER] == 0xFFFF) 494 return 0; 495 496 for (mver = 14; mver >= 1; mver--) 497 if (id[ATA_ID_MAJOR_VER] & (1 << mver)) 498 break; 499 return mver; 500 } 501 502 static inline int ata_id_is_sata(const u16 *id) 503 { 504 return ata_id_major_version(id) >= 5 && id[93] == 0; 505 } 506 507 static inline int ata_id_current_chs_valid(const u16 *id) 508 { 509 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command 510 has not been issued to the device then the values of 511 id[54] to id[56] are vendor specific. */ 512 return (id[53] & 0x01) && /* Current translation valid */ 513 id[54] && /* cylinders in current translation */ 514 id[55] && /* heads in current translation */ 515 id[55] <= 16 && 516 id[56]; /* sectors in current translation */ 517 } 518 519 static inline int ata_id_is_cfa(const u16 *id) 520 { 521 u16 v = id[0]; 522 if (v == 0x848A) /* Standard CF */ 523 return 1; 524 /* Could be CF hiding as standard ATA */ 525 if (ata_id_major_version(id) >= 3 && id[82] != 0xFFFF && 526 (id[82] & ( 1 << 2))) 527 return 1; 528 return 0; 529 } 530 531 static inline int ata_drive_40wire(const u16 *dev_id) 532 { 533 if (ata_id_is_sata(dev_id)) 534 return 0; /* SATA */ 535 if ((dev_id[93] & 0xE000) == 0x6000) 536 return 0; /* 80 wire */ 537 return 1; 538 } 539 540 static inline int ata_drive_40wire_relaxed(const u16 *dev_id) 541 { 542 if (ata_id_is_sata(dev_id)) 543 return 0; /* SATA */ 544 if ((dev_id[93] & 0x2000) == 0x2000) 545 return 0; /* 80 wire */ 546 return 1; 547 } 548 549 static inline int atapi_cdb_len(const u16 *dev_id) 550 { 551 u16 tmp = dev_id[0] & 0x3; 552 switch (tmp) { 553 case 0: return 12; 554 case 1: return 16; 555 default: return -1; 556 } 557 } 558 559 static inline int atapi_command_packet_set(const u16 *dev_id) 560 { 561 return (dev_id[0] >> 8) & 0x1f; 562 } 563 564 static inline int is_atapi_taskfile(const struct ata_taskfile *tf) 565 { 566 return (tf->protocol == ATA_PROT_ATAPI) || 567 (tf->protocol == ATA_PROT_ATAPI_NODATA) || 568 (tf->protocol == ATA_PROT_ATAPI_DMA); 569 } 570 571 static inline int is_multi_taskfile(struct ata_taskfile *tf) 572 { 573 return (tf->command == ATA_CMD_READ_MULTI) || 574 (tf->command == ATA_CMD_WRITE_MULTI) || 575 (tf->command == ATA_CMD_READ_MULTI_EXT) || 576 (tf->command == ATA_CMD_WRITE_MULTI_EXT) || 577 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); 578 } 579 580 static inline int ata_ok(u8 status) 581 { 582 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR)) 583 == ATA_DRDY); 584 } 585 586 static inline int lba_28_ok(u64 block, u32 n_block) 587 { 588 /* check the ending block number */ 589 return ((block + n_block - 1) < ((u64)1 << 28)) && (n_block <= 256); 590 } 591 592 static inline int lba_48_ok(u64 block, u32 n_block) 593 { 594 /* check the ending block number */ 595 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536); 596 } 597 598 #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff) 599 #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16) 600 #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff) 601 #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf) 602 603 #endif /* __LINUX_ATA_H__ */ 604