1 /* 2 * Copyright 2003-2004 Red Hat, Inc. All rights reserved. 3 * Copyright 2003-2004 Jeff Garzik 4 * Copyright (C) 2008 Freescale Semiconductor, Inc. 5 * Dave Liu <daveliu@freescale.com> 6 * port from libata of linux kernel 7 * 8 * SPDX-License-Identifier: GPL-2.0+ 9 */ 10 11 #ifndef __LIBATA_H__ 12 #define __LIBATA_H__ 13 14 #include <common.h> 15 16 enum { 17 /* various global constants */ 18 ATA_MAX_DEVICES = 2, /* per bus/port */ 19 ATA_MAX_PRD = 256, /* we could make these 256/256 */ 20 ATA_SECT_SIZE = 512, 21 ATA_MAX_SECTORS_128 = 128, 22 ATA_MAX_SECTORS = 256, 23 ATA_MAX_SECTORS_LBA48 = 65535, 24 ATA_MAX_SECTORS_TAPE = 65535, 25 26 ATA_ID_WORDS = 256, 27 ATA_ID_SERNO = 10, 28 ATA_ID_FW_REV = 23, 29 ATA_ID_PROD = 27, 30 ATA_ID_OLD_PIO_MODES = 51, 31 ATA_ID_FIELD_VALID = 53, 32 ATA_ID_LBA_SECTORS = 60, 33 ATA_ID_MWDMA_MODES = 63, 34 ATA_ID_PIO_MODES = 64, 35 ATA_ID_EIDE_DMA_MIN = 65, 36 ATA_ID_EIDE_PIO = 67, 37 ATA_ID_EIDE_PIO_IORDY = 68, 38 ATA_ID_PIO4 = (1 << 1), 39 ATA_ID_QUEUE_DEPTH = 75, 40 ATA_ID_SATA_CAP = 76, 41 ATA_ID_SATA_FEATURES = 78, 42 ATA_ID_SATA_FEATURES_EN = 79, 43 ATA_ID_MAJOR_VER = 80, 44 ATA_ID_MINOR_VER = 81, 45 ATA_ID_UDMA_MODES = 88, 46 ATA_ID_LBA48_SECTORS = 100, 47 48 ATA_ID_SERNO_LEN = 20, 49 ATA_ID_FW_REV_LEN = 8, 50 ATA_ID_PROD_LEN = 40, 51 52 ATA_PCI_CTL_OFS = 2, 53 54 ATA_PIO0 = (1 << 0), 55 ATA_PIO1 = ATA_PIO0 | (1 << 1), 56 ATA_PIO2 = ATA_PIO1 | (1 << 2), 57 ATA_PIO3 = ATA_PIO2 | (1 << 3), 58 ATA_PIO4 = ATA_PIO3 | (1 << 4), 59 ATA_PIO5 = ATA_PIO4 | (1 << 5), 60 ATA_PIO6 = ATA_PIO5 | (1 << 6), 61 62 ATA_SWDMA0 = (1 << 0), 63 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1), 64 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2), 65 66 ATA_SWDMA2_ONLY = (1 << 2), 67 68 ATA_MWDMA0 = (1 << 0), 69 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1), 70 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2), 71 72 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2), 73 ATA_MWDMA2_ONLY = (1 << 2), 74 75 ATA_UDMA0 = (1 << 0), 76 ATA_UDMA1 = ATA_UDMA0 | (1 << 1), 77 ATA_UDMA2 = ATA_UDMA1 | (1 << 2), 78 ATA_UDMA3 = ATA_UDMA2 | (1 << 3), 79 ATA_UDMA4 = ATA_UDMA3 | (1 << 4), 80 ATA_UDMA5 = ATA_UDMA4 | (1 << 5), 81 ATA_UDMA6 = ATA_UDMA5 | (1 << 6), 82 ATA_UDMA7 = ATA_UDMA6 | (1 << 7), 83 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */ 84 85 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */ 86 87 /* DMA-related */ 88 ATA_PRD_SZ = 8, 89 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ), 90 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */ 91 92 ATA_DMA_TABLE_OFS = 4, 93 ATA_DMA_STATUS = 2, 94 ATA_DMA_CMD = 0, 95 ATA_DMA_WR = (1 << 3), 96 ATA_DMA_START = (1 << 0), 97 ATA_DMA_INTR = (1 << 2), 98 ATA_DMA_ERR = (1 << 1), 99 ATA_DMA_ACTIVE = (1 << 0), 100 101 /* bits in ATA command block registers */ 102 ATA_HOB = (1 << 7), /* LBA48 selector */ 103 ATA_NIEN = (1 << 1), /* disable-irq flag */ 104 ATA_LBA = (1 << 6), /* LBA28 selector */ 105 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */ 106 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */ 107 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */ 108 ATA_BUSY = (1 << 7), /* BSY status bit */ 109 ATA_DRDY = (1 << 6), /* device ready */ 110 ATA_DF = (1 << 5), /* device fault */ 111 ATA_DRQ = (1 << 3), /* data request i/o */ 112 ATA_ERR = (1 << 0), /* have an error */ 113 ATA_SRST = (1 << 2), /* software reset */ 114 ATA_ICRC = (1 << 7), /* interface CRC error */ 115 ATA_UNC = (1 << 6), /* uncorrectable media error */ 116 ATA_IDNF = (1 << 4), /* ID not found */ 117 ATA_ABORTED = (1 << 2), /* command aborted */ 118 119 /* ATA command block registers */ 120 ATA_REG_DATA = 0x00, 121 ATA_REG_ERR = 0x01, 122 ATA_REG_NSECT = 0x02, 123 ATA_REG_LBAL = 0x03, 124 ATA_REG_LBAM = 0x04, 125 ATA_REG_LBAH = 0x05, 126 ATA_REG_DEVICE = 0x06, 127 ATA_REG_STATUS = 0x07, 128 129 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */ 130 ATA_REG_CMD = ATA_REG_STATUS, 131 ATA_REG_BYTEL = ATA_REG_LBAM, 132 ATA_REG_BYTEH = ATA_REG_LBAH, 133 ATA_REG_DEVSEL = ATA_REG_DEVICE, 134 ATA_REG_IRQ = ATA_REG_NSECT, 135 136 /* ATA device commands */ 137 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */ 138 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */ 139 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */ 140 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */ 141 ATA_CMD_EDD = 0x90, /* execute device diagnostic */ 142 ATA_CMD_FLUSH = 0xE7, 143 ATA_CMD_FLUSH_EXT = 0xEA, 144 ATA_CMD_ID_ATA = 0xEC, 145 ATA_CMD_ID_ATAPI = 0xA1, 146 ATA_CMD_READ = 0xC8, 147 ATA_CMD_READ_EXT = 0x25, 148 ATA_CMD_WRITE = 0xCA, 149 ATA_CMD_WRITE_EXT = 0x35, 150 ATA_CMD_WRITE_FUA_EXT = 0x3D, 151 ATA_CMD_FPDMA_READ = 0x60, 152 ATA_CMD_FPDMA_WRITE = 0x61, 153 ATA_CMD_PIO_READ = 0x20, 154 ATA_CMD_PIO_READ_EXT = 0x24, 155 ATA_CMD_PIO_WRITE = 0x30, 156 ATA_CMD_PIO_WRITE_EXT = 0x34, 157 ATA_CMD_READ_MULTI = 0xC4, 158 ATA_CMD_READ_MULTI_EXT = 0x29, 159 ATA_CMD_WRITE_MULTI = 0xC5, 160 ATA_CMD_WRITE_MULTI_EXT = 0x39, 161 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE, 162 ATA_CMD_SET_FEATURES = 0xEF, 163 ATA_CMD_SET_MULTI = 0xC6, 164 ATA_CMD_PACKET = 0xA0, 165 ATA_CMD_VERIFY = 0x40, 166 ATA_CMD_VERIFY_EXT = 0x42, 167 ATA_CMD_STANDBYNOW1 = 0xE0, 168 ATA_CMD_IDLEIMMEDIATE = 0xE1, 169 ATA_CMD_SLEEP = 0xE6, 170 ATA_CMD_INIT_DEV_PARAMS = 0x91, 171 ATA_CMD_READ_NATIVE_MAX = 0xF8, 172 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27, 173 ATA_CMD_SET_MAX = 0xF9, 174 ATA_CMD_SET_MAX_EXT = 0x37, 175 ATA_CMD_READ_LOG_EXT = 0x2f, 176 ATA_CMD_PMP_READ = 0xE4, 177 ATA_CMD_PMP_WRITE = 0xE8, 178 ATA_CMD_CONF_OVERLAY = 0xB1, 179 ATA_CMD_SEC_FREEZE_LOCK = 0xF5, 180 181 /* READ_LOG_EXT pages */ 182 ATA_LOG_SATA_NCQ = 0x10, 183 184 /* READ/WRITE LONG (obsolete) */ 185 ATA_CMD_READ_LONG = 0x22, 186 ATA_CMD_READ_LONG_ONCE = 0x23, 187 ATA_CMD_WRITE_LONG = 0x32, 188 ATA_CMD_WRITE_LONG_ONCE = 0x33, 189 190 /* SETFEATURES stuff */ 191 SETFEATURES_XFER = 0x03, 192 XFER_UDMA_7 = 0x47, 193 XFER_UDMA_6 = 0x46, 194 XFER_UDMA_5 = 0x45, 195 XFER_UDMA_4 = 0x44, 196 XFER_UDMA_3 = 0x43, 197 XFER_UDMA_2 = 0x42, 198 XFER_UDMA_1 = 0x41, 199 XFER_UDMA_0 = 0x40, 200 XFER_MW_DMA_4 = 0x24, /* CFA only */ 201 XFER_MW_DMA_3 = 0x23, /* CFA only */ 202 XFER_MW_DMA_2 = 0x22, 203 XFER_MW_DMA_1 = 0x21, 204 XFER_MW_DMA_0 = 0x20, 205 XFER_SW_DMA_2 = 0x12, 206 XFER_SW_DMA_1 = 0x11, 207 XFER_SW_DMA_0 = 0x10, 208 XFER_PIO_6 = 0x0E, /* CFA only */ 209 XFER_PIO_5 = 0x0D, /* CFA only */ 210 XFER_PIO_4 = 0x0C, 211 XFER_PIO_3 = 0x0B, 212 XFER_PIO_2 = 0x0A, 213 XFER_PIO_1 = 0x09, 214 XFER_PIO_0 = 0x08, 215 XFER_PIO_SLOW = 0x00, 216 217 SETFEATURES_WC_ON = 0x02, /* Enable write cache */ 218 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */ 219 220 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */ 221 222 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */ 223 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */ 224 225 /* SETFEATURE Sector counts for SATA features */ 226 SATA_AN = 0x05, /* Asynchronous Notification */ 227 SATA_DIPM = 0x03, /* Device Initiated Power Management */ 228 229 /* feature values for SET_MAX */ 230 ATA_SET_MAX_ADDR = 0x00, 231 ATA_SET_MAX_PASSWD = 0x01, 232 ATA_SET_MAX_LOCK = 0x02, 233 ATA_SET_MAX_UNLOCK = 0x03, 234 ATA_SET_MAX_FREEZE_LOCK = 0x04, 235 236 /* feature values for DEVICE CONFIGURATION OVERLAY */ 237 ATA_DCO_RESTORE = 0xC0, 238 ATA_DCO_FREEZE_LOCK = 0xC1, 239 ATA_DCO_IDENTIFY = 0xC2, 240 ATA_DCO_SET = 0xC3, 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, /* don't know, maybe 80c? */ 276 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */ 277 ATA_CBL_SATA = 6, 278 279 /* SATA Status and Control Registers */ 280 SCR_STATUS = 0, 281 SCR_ERROR = 1, 282 SCR_CONTROL = 2, 283 SCR_ACTIVE = 3, 284 SCR_NOTIFICATION = 4, 285 286 /* SError bits */ 287 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */ 288 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */ 289 SERR_DATA = (1 << 8), /* unrecovered data error */ 290 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */ 291 SERR_PROTOCOL = (1 << 10), /* protocol violation */ 292 SERR_INTERNAL = (1 << 11), /* host internal error */ 293 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */ 294 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */ 295 SERR_COMM_WAKE = (1 << 18), /* Comm wake */ 296 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */ 297 SERR_DISPARITY = (1 << 20), /* Disparity */ 298 SERR_CRC = (1 << 21), /* CRC error */ 299 SERR_HANDSHAKE = (1 << 22), /* Handshake error */ 300 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */ 301 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */ 302 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */ 303 SERR_DEV_XCHG = (1 << 26), /* device exchanged */ 304 305 /* struct ata_taskfile flags */ 306 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */ 307 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */ 308 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */ 309 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */ 310 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */ 311 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */ 312 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */ 313 314 /* protocol flags */ 315 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */ 316 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */ 317 ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA, 318 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */ 319 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */ 320 }; 321 322 enum ata_tf_protocols { 323 /* ATA taskfile protocols */ 324 ATA_PROT_UNKNOWN, /* unknown/invalid */ 325 ATA_PROT_NODATA, /* no data */ 326 ATA_PROT_PIO, /* PIO data xfer */ 327 ATA_PROT_DMA, /* DMA */ 328 ATA_PROT_NCQ, /* NCQ */ 329 ATAPI_PROT_NODATA, /* packet command, no data */ 330 ATAPI_PROT_PIO, /* packet command, PIO data xfer*/ 331 ATAPI_PROT_DMA, /* packet command with special DMA sauce */ 332 }; 333 334 enum ata_ioctls { 335 ATA_IOC_GET_IO32 = 0x309, 336 ATA_IOC_SET_IO32 = 0x324, 337 }; 338 339 enum ata_dev_typed { 340 ATA_DEV_ATA, /* ATA device */ 341 ATA_DEV_ATAPI, /* ATAPI device */ 342 ATA_DEV_PMP, /* Port Multiplier Port */ 343 ATA_DEV_UNKNOWN, /* unknown */ 344 }; 345 346 struct ata_taskfile { 347 unsigned long flags; /* ATA_TFLAG_xxx */ 348 u8 protocol; /* ATA_PROT_xxx */ 349 350 u8 ctl; /* control reg */ 351 352 u8 hob_feature; /* additional data */ 353 u8 hob_nsect; /* to support LBA48 */ 354 u8 hob_lbal; 355 u8 hob_lbam; 356 u8 hob_lbah; 357 358 u8 feature; 359 u8 nsect; 360 u8 lbal; 361 u8 lbam; 362 u8 lbah; 363 364 u8 device; 365 366 u8 command; /* IO operation */ 367 }; 368 369 /* 370 * protocol tests 371 */ 372 static inline unsigned int ata_prot_flags(u8 prot) 373 { 374 switch (prot) { 375 case ATA_PROT_NODATA: 376 return 0; 377 case ATA_PROT_PIO: 378 return ATA_PROT_FLAG_PIO; 379 case ATA_PROT_DMA: 380 return ATA_PROT_FLAG_DMA; 381 case ATA_PROT_NCQ: 382 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ; 383 case ATAPI_PROT_NODATA: 384 return ATA_PROT_FLAG_ATAPI; 385 case ATAPI_PROT_PIO: 386 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO; 387 case ATAPI_PROT_DMA: 388 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA; 389 } 390 return 0; 391 } 392 393 static inline int ata_is_atapi(u8 prot) 394 { 395 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI; 396 } 397 398 static inline int ata_is_nodata(u8 prot) 399 { 400 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA); 401 } 402 403 static inline int ata_is_pio(u8 prot) 404 { 405 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO; 406 } 407 408 static inline int ata_is_dma(u8 prot) 409 { 410 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA; 411 } 412 413 static inline int ata_is_ncq(u8 prot) 414 { 415 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ; 416 } 417 418 static inline int ata_is_data(u8 prot) 419 { 420 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA; 421 } 422 423 /* 424 * id tests 425 */ 426 #define ata_id_is_ata(id) (((id)[0] & (1 << 15)) == 0) 427 #define ata_id_has_lba(id) ((id)[49] & (1 << 9)) 428 #define ata_id_has_dma(id) ((id)[49] & (1 << 8)) 429 #define ata_id_has_ncq(id) ((id)[76] & (1 << 8)) 430 #define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1) 431 #define ata_id_removeable(id) ((id)[0] & (1 << 7)) 432 #define ata_id_iordy_disable(id) ((id)[49] & (1 << 10)) 433 #define ata_id_has_iordy(id) ((id)[49] & (1 << 11)) 434 435 #define ata_id_u32(id,n) \ 436 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)])) 437 #define ata_id_u64(id,n) \ 438 ( ((u64) (id)[(n) + 3] << 48) | \ 439 ((u64) (id)[(n) + 2] << 32) | \ 440 ((u64) (id)[(n) + 1] << 16) | \ 441 ((u64) (id)[(n) + 0]) ) 442 443 #define ata_id_cdb_intr(id) (((id)[0] & 0x60) == 0x20) 444 445 static inline int ata_id_has_fua(const u16 *id) 446 { 447 if ((id[84] & 0xC000) != 0x4000) 448 return 0; 449 return id[84] & (1 << 6); 450 } 451 452 static inline int ata_id_has_flush(const u16 *id) 453 { 454 if ((id[83] & 0xC000) != 0x4000) 455 return 0; 456 return id[83] & (1 << 12); 457 } 458 459 static inline int ata_id_has_flush_ext(const u16 *id) 460 { 461 if ((id[83] & 0xC000) != 0x4000) 462 return 0; 463 return id[83] & (1 << 13); 464 } 465 466 static inline int ata_id_has_lba48(const u16 *id) 467 { 468 if ((id[83] & 0xC000) != 0x4000) 469 return 0; 470 if (!ata_id_u64(id, 100)) 471 return 0; 472 return id[83] & (1 << 10); 473 } 474 475 static inline int ata_id_hpa_enabled(const u16 *id) 476 { 477 /* Yes children, word 83 valid bits cover word 82 data */ 478 if ((id[83] & 0xC000) != 0x4000) 479 return 0; 480 /* And 87 covers 85-87 */ 481 if ((id[87] & 0xC000) != 0x4000) 482 return 0; 483 /* Check command sets enabled as well as supported */ 484 if ((id[85] & ( 1 << 10)) == 0) 485 return 0; 486 return id[82] & (1 << 10); 487 } 488 489 static inline int ata_id_has_wcache(const u16 *id) 490 { 491 /* Yes children, word 83 valid bits cover word 82 data */ 492 if ((id[83] & 0xC000) != 0x4000) 493 return 0; 494 return id[82] & (1 << 5); 495 } 496 497 static inline int ata_id_has_pm(const u16 *id) 498 { 499 if ((id[83] & 0xC000) != 0x4000) 500 return 0; 501 return id[82] & (1 << 3); 502 } 503 504 static inline int ata_id_rahead_enabled(const u16 *id) 505 { 506 if ((id[87] & 0xC000) != 0x4000) 507 return 0; 508 return id[85] & (1 << 6); 509 } 510 511 static inline int ata_id_wcache_enabled(const u16 *id) 512 { 513 if ((id[87] & 0xC000) != 0x4000) 514 return 0; 515 return id[85] & (1 << 5); 516 } 517 518 static inline unsigned int ata_id_major_version(const u16 *id) 519 { 520 unsigned int mver; 521 522 if (id[ATA_ID_MAJOR_VER] == 0xFFFF) 523 return 0; 524 525 for (mver = 14; mver >= 1; mver--) 526 if (id[ATA_ID_MAJOR_VER] & (1 << mver)) 527 break; 528 return mver; 529 } 530 531 static inline int ata_id_is_sata(const u16 *id) 532 { 533 return ata_id_major_version(id) >= 5 && id[93] == 0; 534 } 535 536 static inline int ata_id_has_tpm(const u16 *id) 537 { 538 /* The TPM bits are only valid on ATA8 */ 539 if (ata_id_major_version(id) < 8) 540 return 0; 541 if ((id[48] & 0xC000) != 0x4000) 542 return 0; 543 return id[48] & (1 << 0); 544 } 545 546 static inline int ata_id_has_dword_io(const u16 *id) 547 { 548 /* ATA 8 reuses this flag for "trusted" computing */ 549 if (ata_id_major_version(id) > 7) 550 return 0; 551 if (id[48] & (1 << 0)) 552 return 1; 553 return 0; 554 } 555 556 static inline int ata_id_current_chs_valid(const u16 *id) 557 { 558 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command 559 has not been issued to the device then the values of 560 id[54] to id[56] are vendor specific. */ 561 return (id[53] & 0x01) && /* Current translation valid */ 562 id[54] && /* cylinders in current translation */ 563 id[55] && /* heads in current translation */ 564 id[55] <= 16 && 565 id[56]; /* sectors in current translation */ 566 } 567 568 static inline int ata_id_is_cfa(const u16 *id) 569 { 570 u16 v = id[0]; 571 if (v == 0x848A) /* Standard CF */ 572 return 1; 573 /* Could be CF hiding as standard ATA */ 574 if (ata_id_major_version(id) >= 3 && id[82] != 0xFFFF && 575 (id[82] & ( 1 << 2))) 576 return 1; 577 return 0; 578 } 579 580 static inline int ata_drive_40wire(const u16 *dev_id) 581 { 582 if (ata_id_is_sata(dev_id)) 583 return 0; /* SATA */ 584 if ((dev_id[93] & 0xE000) == 0x6000) 585 return 0; /* 80 wire */ 586 return 1; 587 } 588 589 static inline int ata_drive_40wire_relaxed(const u16 *dev_id) 590 { 591 if ((dev_id[93] & 0x2000) == 0x2000) 592 return 0; /* 80 wire */ 593 return 1; 594 } 595 596 static inline int atapi_cdb_len(const u16 *dev_id) 597 { 598 u16 tmp = dev_id[0] & 0x3; 599 switch (tmp) { 600 case 0: return 12; 601 case 1: return 16; 602 default: return -1; 603 } 604 } 605 606 static inline int atapi_command_packet_set(const u16 *dev_id) 607 { 608 return (dev_id[0] >> 8) & 0x1f; 609 } 610 611 static inline int atapi_id_dmadir(const u16 *dev_id) 612 { 613 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000); 614 } 615 616 static inline int is_multi_taskfile(struct ata_taskfile *tf) 617 { 618 return (tf->command == ATA_CMD_READ_MULTI) || 619 (tf->command == ATA_CMD_WRITE_MULTI) || 620 (tf->command == ATA_CMD_READ_MULTI_EXT) || 621 (tf->command == ATA_CMD_WRITE_MULTI_EXT) || 622 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); 623 } 624 625 static inline int ata_ok(u8 status) 626 { 627 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR)) 628 == ATA_DRDY); 629 } 630 631 static inline int lba_28_ok(u64 block, u32 n_block) 632 { 633 /* check the ending block number */ 634 return ((block + n_block - 1) < ((u64)1 << 28)) && (n_block <= 256); 635 } 636 637 static inline int lba_48_ok(u64 block, u32 n_block) 638 { 639 /* check the ending block number */ 640 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536); 641 } 642 643 #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff) 644 #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16) 645 #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff) 646 #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf) 647 648 u64 ata_id_n_sectors(u16 *id); 649 u32 ata_dev_classify(u32 sig); 650 void ata_id_c_string(const u16 *id, unsigned char *s, 651 unsigned int ofs, unsigned int len); 652 void ata_dump_id(u16 *id); 653 void ata_swap_buf_le16(u16 *buf, unsigned int buf_words); 654 655 #endif /* __LIBATA_H__ */ 656