1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Copyright 2003-2004 Red Hat, Inc. All rights reserved. 4 * Copyright 2003-2004 Jeff Garzik 5 * Copyright (C) 2008 Freescale Semiconductor, Inc. 6 * Dave Liu <daveliu (at) freescale.com> 7 * port from libata of linux kernel 8 */ 9 10 #ifndef __LIBATA_H__ 11 #define __LIBATA_H__ 12 13 #include <common.h> 14 15 enum { 16 /* various global constants */ 17 ATA_MAX_DEVICES = 2, /* per bus/port */ 18 ATA_MAX_PRD = 256, /* we could make these 256/256 */ 19 ATA_SECT_SIZE = 512, 20 ATA_MAX_SECTORS_128 = 128, 21 ATA_MAX_SECTORS = 256, 22 ATA_MAX_SECTORS_LBA48 = 65535, 23 ATA_MAX_SECTORS_TAPE = 65535, 24 25 ATA_ID_WORDS = 256, 26 ATA_ID_SERNO = 10, 27 ATA_ID_FW_REV = 23, 28 ATA_ID_PROD = 27, 29 ATA_ID_OLD_PIO_MODES = 51, 30 ATA_ID_FIELD_VALID = 53, 31 ATA_ID_LBA_SECTORS = 60, 32 ATA_ID_MWDMA_MODES = 63, 33 ATA_ID_PIO_MODES = 64, 34 ATA_ID_EIDE_DMA_MIN = 65, 35 ATA_ID_EIDE_PIO = 67, 36 ATA_ID_EIDE_PIO_IORDY = 68, 37 ATA_ID_PIO4 = (1 << 1), 38 ATA_ID_QUEUE_DEPTH = 75, 39 ATA_ID_SATA_CAP = 76, 40 ATA_ID_SATA_FEATURES = 78, 41 ATA_ID_SATA_FEATURES_EN = 79, 42 ATA_ID_MAJOR_VER = 80, 43 ATA_ID_MINOR_VER = 81, 44 ATA_ID_UDMA_MODES = 88, 45 ATA_ID_LBA48_SECTORS = 100, 46 47 ATA_ID_SERNO_LEN = 20, 48 ATA_ID_FW_REV_LEN = 8, 49 ATA_ID_PROD_LEN = 40, 50 51 ATA_PCI_CTL_OFS = 2, 52 53 ATA_PIO0 = (1 << 0), 54 ATA_PIO1 = ATA_PIO0 | (1 << 1), 55 ATA_PIO2 = ATA_PIO1 | (1 << 2), 56 ATA_PIO3 = ATA_PIO2 | (1 << 3), 57 ATA_PIO4 = ATA_PIO3 | (1 << 4), 58 ATA_PIO5 = ATA_PIO4 | (1 << 5), 59 ATA_PIO6 = ATA_PIO5 | (1 << 6), 60 61 ATA_SWDMA0 = (1 << 0), 62 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1), 63 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2), 64 65 ATA_SWDMA2_ONLY = (1 << 2), 66 67 ATA_MWDMA0 = (1 << 0), 68 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1), 69 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2), 70 71 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2), 72 ATA_MWDMA2_ONLY = (1 << 2), 73 74 ATA_UDMA0 = (1 << 0), 75 ATA_UDMA1 = ATA_UDMA0 | (1 << 1), 76 ATA_UDMA2 = ATA_UDMA1 | (1 << 2), 77 ATA_UDMA3 = ATA_UDMA2 | (1 << 3), 78 ATA_UDMA4 = ATA_UDMA3 | (1 << 4), 79 ATA_UDMA5 = ATA_UDMA4 | (1 << 5), 80 ATA_UDMA6 = ATA_UDMA5 | (1 << 6), 81 ATA_UDMA7 = ATA_UDMA6 | (1 << 7), 82 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */ 83 84 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */ 85 86 /* DMA-related */ 87 ATA_PRD_SZ = 8, 88 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ), 89 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */ 90 91 ATA_DMA_TABLE_OFS = 4, 92 ATA_DMA_STATUS = 2, 93 ATA_DMA_CMD = 0, 94 ATA_DMA_WR = (1 << 3), 95 ATA_DMA_START = (1 << 0), 96 ATA_DMA_INTR = (1 << 2), 97 ATA_DMA_ERR = (1 << 1), 98 ATA_DMA_ACTIVE = (1 << 0), 99 100 /* bits in ATA command block registers */ 101 ATA_HOB = (1 << 7), /* LBA48 selector */ 102 ATA_NIEN = (1 << 1), /* disable-irq flag */ 103 ATA_LBA = (1 << 6), /* LBA28 selector */ 104 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */ 105 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */ 106 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */ 107 ATA_BUSY = (1 << 7), /* BSY status bit */ 108 ATA_DRDY = (1 << 6), /* device ready */ 109 ATA_DF = (1 << 5), /* device fault */ 110 ATA_DRQ = (1 << 3), /* data request i/o */ 111 ATA_ERR = (1 << 0), /* have an error */ 112 ATA_SRST = (1 << 2), /* software reset */ 113 ATA_ICRC = (1 << 7), /* interface CRC error */ 114 ATA_UNC = (1 << 6), /* uncorrectable media error */ 115 ATA_IDNF = (1 << 4), /* ID not found */ 116 ATA_ABORTED = (1 << 2), /* command aborted */ 117 118 /* ATA command block registers */ 119 ATA_REG_DATA = 0x00, 120 ATA_REG_ERR = 0x01, 121 ATA_REG_NSECT = 0x02, 122 ATA_REG_LBAL = 0x03, 123 ATA_REG_LBAM = 0x04, 124 ATA_REG_LBAH = 0x05, 125 ATA_REG_DEVICE = 0x06, 126 ATA_REG_STATUS = 0x07, 127 128 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */ 129 ATA_REG_CMD = ATA_REG_STATUS, 130 ATA_REG_BYTEL = ATA_REG_LBAM, 131 ATA_REG_BYTEH = ATA_REG_LBAH, 132 ATA_REG_DEVSEL = ATA_REG_DEVICE, 133 ATA_REG_IRQ = ATA_REG_NSECT, 134 135 /* ATA device commands */ 136 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */ 137 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */ 138 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */ 139 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */ 140 ATA_CMD_EDD = 0x90, /* execute device diagnostic */ 141 ATA_CMD_FLUSH = 0xE7, 142 ATA_CMD_FLUSH_EXT = 0xEA, 143 ATA_CMD_ID_ATA = 0xEC, 144 ATA_CMD_ID_ATAPI = 0xA1, 145 ATA_CMD_READ = 0xC8, 146 ATA_CMD_READ_EXT = 0x25, 147 ATA_CMD_WRITE = 0xCA, 148 ATA_CMD_WRITE_EXT = 0x35, 149 ATA_CMD_WRITE_FUA_EXT = 0x3D, 150 ATA_CMD_FPDMA_READ = 0x60, 151 ATA_CMD_FPDMA_WRITE = 0x61, 152 ATA_CMD_PIO_READ = 0x20, 153 ATA_CMD_PIO_READ_EXT = 0x24, 154 ATA_CMD_PIO_WRITE = 0x30, 155 ATA_CMD_PIO_WRITE_EXT = 0x34, 156 ATA_CMD_READ_MULTI = 0xC4, 157 ATA_CMD_READ_MULTI_EXT = 0x29, 158 ATA_CMD_WRITE_MULTI = 0xC5, 159 ATA_CMD_WRITE_MULTI_EXT = 0x39, 160 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE, 161 ATA_CMD_SET_FEATURES = 0xEF, 162 ATA_CMD_SET_MULTI = 0xC6, 163 ATA_CMD_PACKET = 0xA0, 164 ATA_CMD_VERIFY = 0x40, 165 ATA_CMD_VERIFY_EXT = 0x42, 166 ATA_CMD_STANDBYNOW1 = 0xE0, 167 ATA_CMD_IDLEIMMEDIATE = 0xE1, 168 ATA_CMD_SLEEP = 0xE6, 169 ATA_CMD_INIT_DEV_PARAMS = 0x91, 170 ATA_CMD_READ_NATIVE_MAX = 0xF8, 171 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27, 172 ATA_CMD_SET_MAX = 0xF9, 173 ATA_CMD_SET_MAX_EXT = 0x37, 174 ATA_CMD_READ_LOG_EXT = 0x2f, 175 ATA_CMD_PMP_READ = 0xE4, 176 ATA_CMD_PMP_WRITE = 0xE8, 177 ATA_CMD_CONF_OVERLAY = 0xB1, 178 ATA_CMD_SEC_FREEZE_LOCK = 0xF5, 179 180 /* READ_LOG_EXT pages */ 181 ATA_LOG_SATA_NCQ = 0x10, 182 183 /* READ/WRITE LONG (obsolete) */ 184 ATA_CMD_READ_LONG = 0x22, 185 ATA_CMD_READ_LONG_ONCE = 0x23, 186 ATA_CMD_WRITE_LONG = 0x32, 187 ATA_CMD_WRITE_LONG_ONCE = 0x33, 188 189 /* SETFEATURES stuff */ 190 SETFEATURES_XFER = 0x03, 191 XFER_UDMA_7 = 0x47, 192 XFER_UDMA_6 = 0x46, 193 XFER_UDMA_5 = 0x45, 194 XFER_UDMA_4 = 0x44, 195 XFER_UDMA_3 = 0x43, 196 XFER_UDMA_2 = 0x42, 197 XFER_UDMA_1 = 0x41, 198 XFER_UDMA_0 = 0x40, 199 XFER_MW_DMA_4 = 0x24, /* CFA only */ 200 XFER_MW_DMA_3 = 0x23, /* CFA only */ 201 XFER_MW_DMA_2 = 0x22, 202 XFER_MW_DMA_1 = 0x21, 203 XFER_MW_DMA_0 = 0x20, 204 XFER_SW_DMA_2 = 0x12, 205 XFER_SW_DMA_1 = 0x11, 206 XFER_SW_DMA_0 = 0x10, 207 XFER_PIO_6 = 0x0E, /* CFA only */ 208 XFER_PIO_5 = 0x0D, /* CFA only */ 209 XFER_PIO_4 = 0x0C, 210 XFER_PIO_3 = 0x0B, 211 XFER_PIO_2 = 0x0A, 212 XFER_PIO_1 = 0x09, 213 XFER_PIO_0 = 0x08, 214 XFER_PIO_SLOW = 0x00, 215 216 SETFEATURES_WC_ON = 0x02, /* Enable write cache */ 217 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */ 218 219 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */ 220 221 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */ 222 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */ 223 224 /* SETFEATURE Sector counts for SATA features */ 225 SATA_AN = 0x05, /* Asynchronous Notification */ 226 SATA_DIPM = 0x03, /* Device Initiated Power Management */ 227 228 /* feature values for SET_MAX */ 229 ATA_SET_MAX_ADDR = 0x00, 230 ATA_SET_MAX_PASSWD = 0x01, 231 ATA_SET_MAX_LOCK = 0x02, 232 ATA_SET_MAX_UNLOCK = 0x03, 233 ATA_SET_MAX_FREEZE_LOCK = 0x04, 234 235 /* feature values for DEVICE CONFIGURATION OVERLAY */ 236 ATA_DCO_RESTORE = 0xC0, 237 ATA_DCO_FREEZE_LOCK = 0xC1, 238 ATA_DCO_IDENTIFY = 0xC2, 239 ATA_DCO_SET = 0xC3, 240 241 /* ATAPI stuff */ 242 ATAPI_PKT_DMA = (1 << 0), 243 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir: 244 0=to device, 1=to host */ 245 ATAPI_CDB_LEN = 16, 246 247 /* PMP stuff */ 248 SATA_PMP_MAX_PORTS = 15, 249 SATA_PMP_CTRL_PORT = 15, 250 251 SATA_PMP_GSCR_DWORDS = 128, 252 SATA_PMP_GSCR_PROD_ID = 0, 253 SATA_PMP_GSCR_REV = 1, 254 SATA_PMP_GSCR_PORT_INFO = 2, 255 SATA_PMP_GSCR_ERROR = 32, 256 SATA_PMP_GSCR_ERROR_EN = 33, 257 SATA_PMP_GSCR_FEAT = 64, 258 SATA_PMP_GSCR_FEAT_EN = 96, 259 260 SATA_PMP_PSCR_STATUS = 0, 261 SATA_PMP_PSCR_ERROR = 1, 262 SATA_PMP_PSCR_CONTROL = 2, 263 264 SATA_PMP_FEAT_BIST = (1 << 0), 265 SATA_PMP_FEAT_PMREQ = (1 << 1), 266 SATA_PMP_FEAT_DYNSSC = (1 << 2), 267 SATA_PMP_FEAT_NOTIFY = (1 << 3), 268 269 /* cable types */ 270 ATA_CBL_NONE = 0, 271 ATA_CBL_PATA40 = 1, 272 ATA_CBL_PATA80 = 2, 273 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */ 274 ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */ 275 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */ 276 ATA_CBL_SATA = 6, 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 /* protocol flags */ 314 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */ 315 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */ 316 ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA, 317 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */ 318 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */ 319 }; 320 321 enum ata_tf_protocols { 322 /* ATA taskfile protocols */ 323 ATA_PROT_UNKNOWN, /* unknown/invalid */ 324 ATA_PROT_NODATA, /* no data */ 325 ATA_PROT_PIO, /* PIO data xfer */ 326 ATA_PROT_DMA, /* DMA */ 327 ATA_PROT_NCQ, /* NCQ */ 328 ATAPI_PROT_NODATA, /* packet command, no data */ 329 ATAPI_PROT_PIO, /* packet command, PIO data xfer*/ 330 ATAPI_PROT_DMA, /* packet command with special DMA sauce */ 331 }; 332 333 enum ata_ioctls { 334 ATA_IOC_GET_IO32 = 0x309, 335 ATA_IOC_SET_IO32 = 0x324, 336 }; 337 338 enum ata_dev_typed { 339 ATA_DEV_ATA, /* ATA device */ 340 ATA_DEV_ATAPI, /* ATAPI device */ 341 ATA_DEV_PMP, /* Port Multiplier Port */ 342 ATA_DEV_UNKNOWN, /* unknown */ 343 }; 344 345 struct ata_taskfile { 346 unsigned long flags; /* ATA_TFLAG_xxx */ 347 u8 protocol; /* ATA_PROT_xxx */ 348 349 u8 ctl; /* control reg */ 350 351 u8 hob_feature; /* additional data */ 352 u8 hob_nsect; /* to support LBA48 */ 353 u8 hob_lbal; 354 u8 hob_lbam; 355 u8 hob_lbah; 356 357 u8 feature; 358 u8 nsect; 359 u8 lbal; 360 u8 lbam; 361 u8 lbah; 362 363 u8 device; 364 365 u8 command; /* IO operation */ 366 }; 367 368 /* 369 * protocol tests 370 */ 371 static inline unsigned int ata_prot_flags(u8 prot) 372 { 373 switch (prot) { 374 case ATA_PROT_NODATA: 375 return 0; 376 case ATA_PROT_PIO: 377 return ATA_PROT_FLAG_PIO; 378 case ATA_PROT_DMA: 379 return ATA_PROT_FLAG_DMA; 380 case ATA_PROT_NCQ: 381 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ; 382 case ATAPI_PROT_NODATA: 383 return ATA_PROT_FLAG_ATAPI; 384 case ATAPI_PROT_PIO: 385 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO; 386 case ATAPI_PROT_DMA: 387 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA; 388 } 389 return 0; 390 } 391 392 static inline int ata_is_atapi(u8 prot) 393 { 394 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI; 395 } 396 397 static inline int ata_is_nodata(u8 prot) 398 { 399 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA); 400 } 401 402 static inline int ata_is_pio(u8 prot) 403 { 404 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO; 405 } 406 407 static inline int ata_is_dma(u8 prot) 408 { 409 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA; 410 } 411 412 static inline int ata_is_ncq(u8 prot) 413 { 414 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ; 415 } 416 417 static inline int ata_is_data(u8 prot) 418 { 419 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA; 420 } 421 422 /* 423 * id tests 424 */ 425 #define ata_id_is_ata(id) (((id)[0] & (1 << 15)) == 0) 426 #define ata_id_has_lba(id) ((id)[49] & (1 << 9)) 427 #define ata_id_has_dma(id) ((id)[49] & (1 << 8)) 428 #define ata_id_has_ncq(id) ((id)[76] & (1 << 8)) 429 #define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1) 430 #define ata_id_removeable(id) ((id)[0] & (1 << 7)) 431 #define ata_id_iordy_disable(id) ((id)[49] & (1 << 10)) 432 #define ata_id_has_iordy(id) ((id)[49] & (1 << 11)) 433 434 #define ata_id_u32(id,n) \ 435 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)])) 436 #define ata_id_u64(id,n) \ 437 ( ((u64) (id)[(n) + 3] << 48) | \ 438 ((u64) (id)[(n) + 2] << 32) | \ 439 ((u64) (id)[(n) + 1] << 16) | \ 440 ((u64) (id)[(n) + 0]) ) 441 442 #define ata_id_cdb_intr(id) (((id)[0] & 0x60) == 0x20) 443 444 static inline int ata_id_has_fua(const u16 *id) 445 { 446 if ((id[84] & 0xC000) != 0x4000) 447 return 0; 448 return id[84] & (1 << 6); 449 } 450 451 static inline int ata_id_has_flush(const u16 *id) 452 { 453 if ((id[83] & 0xC000) != 0x4000) 454 return 0; 455 return id[83] & (1 << 12); 456 } 457 458 static inline int ata_id_has_flush_ext(const u16 *id) 459 { 460 if ((id[83] & 0xC000) != 0x4000) 461 return 0; 462 return id[83] & (1 << 13); 463 } 464 465 static inline int ata_id_has_lba48(const u16 *id) 466 { 467 if ((id[83] & 0xC000) != 0x4000) 468 return 0; 469 if (!ata_id_u64(id, 100)) 470 return 0; 471 return id[83] & (1 << 10); 472 } 473 474 static inline int ata_id_hpa_enabled(const u16 *id) 475 { 476 /* Yes children, word 83 valid bits cover word 82 data */ 477 if ((id[83] & 0xC000) != 0x4000) 478 return 0; 479 /* And 87 covers 85-87 */ 480 if ((id[87] & 0xC000) != 0x4000) 481 return 0; 482 /* Check command sets enabled as well as supported */ 483 if ((id[85] & ( 1 << 10)) == 0) 484 return 0; 485 return id[82] & (1 << 10); 486 } 487 488 static inline int ata_id_has_wcache(const u16 *id) 489 { 490 /* Yes children, word 83 valid bits cover word 82 data */ 491 if ((id[83] & 0xC000) != 0x4000) 492 return 0; 493 return id[82] & (1 << 5); 494 } 495 496 static inline int ata_id_has_pm(const u16 *id) 497 { 498 if ((id[83] & 0xC000) != 0x4000) 499 return 0; 500 return id[82] & (1 << 3); 501 } 502 503 static inline int ata_id_rahead_enabled(const u16 *id) 504 { 505 if ((id[87] & 0xC000) != 0x4000) 506 return 0; 507 return id[85] & (1 << 6); 508 } 509 510 static inline int ata_id_wcache_enabled(const u16 *id) 511 { 512 if ((id[87] & 0xC000) != 0x4000) 513 return 0; 514 return id[85] & (1 << 5); 515 } 516 517 static inline unsigned int ata_id_major_version(const u16 *id) 518 { 519 unsigned int mver; 520 521 if (id[ATA_ID_MAJOR_VER] == 0xFFFF) 522 return 0; 523 524 for (mver = 14; mver >= 1; mver--) 525 if (id[ATA_ID_MAJOR_VER] & (1 << mver)) 526 break; 527 return mver; 528 } 529 530 static inline int ata_id_is_sata(const u16 *id) 531 { 532 return ata_id_major_version(id) >= 5 && id[93] == 0; 533 } 534 535 static inline int ata_id_has_tpm(const u16 *id) 536 { 537 /* The TPM bits are only valid on ATA8 */ 538 if (ata_id_major_version(id) < 8) 539 return 0; 540 if ((id[48] & 0xC000) != 0x4000) 541 return 0; 542 return id[48] & (1 << 0); 543 } 544 545 static inline int ata_id_has_dword_io(const u16 *id) 546 { 547 /* ATA 8 reuses this flag for "trusted" computing */ 548 if (ata_id_major_version(id) > 7) 549 return 0; 550 if (id[48] & (1 << 0)) 551 return 1; 552 return 0; 553 } 554 555 static inline int ata_id_current_chs_valid(const u16 *id) 556 { 557 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command 558 has not been issued to the device then the values of 559 id[54] to id[56] are vendor specific. */ 560 return (id[53] & 0x01) && /* Current translation valid */ 561 id[54] && /* cylinders in current translation */ 562 id[55] && /* heads in current translation */ 563 id[55] <= 16 && 564 id[56]; /* sectors in current translation */ 565 } 566 567 static inline int ata_id_is_cfa(const u16 *id) 568 { 569 u16 v = id[0]; 570 if (v == 0x848A) /* Standard CF */ 571 return 1; 572 /* Could be CF hiding as standard ATA */ 573 if (ata_id_major_version(id) >= 3 && id[82] != 0xFFFF && 574 (id[82] & ( 1 << 2))) 575 return 1; 576 return 0; 577 } 578 579 static inline int ata_drive_40wire(const u16 *dev_id) 580 { 581 if (ata_id_is_sata(dev_id)) 582 return 0; /* SATA */ 583 if ((dev_id[93] & 0xE000) == 0x6000) 584 return 0; /* 80 wire */ 585 return 1; 586 } 587 588 static inline int ata_drive_40wire_relaxed(const u16 *dev_id) 589 { 590 if ((dev_id[93] & 0x2000) == 0x2000) 591 return 0; /* 80 wire */ 592 return 1; 593 } 594 595 static inline int atapi_cdb_len(const u16 *dev_id) 596 { 597 u16 tmp = dev_id[0] & 0x3; 598 switch (tmp) { 599 case 0: return 12; 600 case 1: return 16; 601 default: return -1; 602 } 603 } 604 605 static inline int atapi_command_packet_set(const u16 *dev_id) 606 { 607 return (dev_id[0] >> 8) & 0x1f; 608 } 609 610 static inline int atapi_id_dmadir(const u16 *dev_id) 611 { 612 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000); 613 } 614 615 static inline int is_multi_taskfile(struct ata_taskfile *tf) 616 { 617 return (tf->command == ATA_CMD_READ_MULTI) || 618 (tf->command == ATA_CMD_WRITE_MULTI) || 619 (tf->command == ATA_CMD_READ_MULTI_EXT) || 620 (tf->command == ATA_CMD_WRITE_MULTI_EXT) || 621 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); 622 } 623 624 static inline int ata_ok(u8 status) 625 { 626 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR)) 627 == ATA_DRDY); 628 } 629 630 static inline int lba_28_ok(u64 block, u32 n_block) 631 { 632 /* check the ending block number */ 633 return ((block + n_block - 1) < ((u64)1 << 28)) && (n_block <= 256); 634 } 635 636 static inline int lba_48_ok(u64 block, u32 n_block) 637 { 638 /* check the ending block number */ 639 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536); 640 } 641 642 #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff) 643 #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16) 644 #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff) 645 #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf) 646 647 u64 ata_id_n_sectors(u16 *id); 648 u32 ata_dev_classify(u32 sig); 649 void ata_id_c_string(const u16 *id, unsigned char *s, 650 unsigned int ofs, unsigned int len); 651 void ata_dump_id(u16 *id); 652 void ata_swap_buf_le16(u16 *buf, unsigned int buf_words); 653 654 #endif /* __LIBATA_H__ */ 655
