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@freescale.com> 7 * port from libata of linux kernel 8 */ 9 10#ifndef __LIBATA_H__ 11#define __LIBATA_H__ 12 13 14enum { 15 /* various global constants */ 16 ATA_MAX_DEVICES = 2, /* per bus/port */ 17 ATA_MAX_PRD = 256, /* we could make these 256/256 */ 18 ATA_SECT_SIZE = 512, 19 ATA_MAX_SECTORS_128 = 128, 20 ATA_MAX_SECTORS = 256, 21 ATA_MAX_SECTORS_LBA48 = 65535, 22 ATA_MAX_SECTORS_TAPE = 65535, 23 24 ATA_ID_WORDS = 256, 25 ATA_ID_SERNO = 10, 26 ATA_ID_FW_REV = 23, 27 ATA_ID_PROD = 27, 28 ATA_ID_OLD_PIO_MODES = 51, 29 ATA_ID_FIELD_VALID = 53, 30 ATA_ID_LBA_SECTORS = 60, 31 ATA_ID_MWDMA_MODES = 63, 32 ATA_ID_PIO_MODES = 64, 33 ATA_ID_EIDE_DMA_MIN = 65, 34 ATA_ID_EIDE_PIO = 67, 35 ATA_ID_EIDE_PIO_IORDY = 68, 36 ATA_ID_PIO4 = (1 << 1), 37 ATA_ID_QUEUE_DEPTH = 75, 38 ATA_ID_SATA_CAP = 76, 39 ATA_ID_SATA_FEATURES = 78, 40 ATA_ID_SATA_FEATURES_EN = 79, 41 ATA_ID_MAJOR_VER = 80, 42 ATA_ID_MINOR_VER = 81, 43 ATA_ID_UDMA_MODES = 88, 44 ATA_ID_LBA48_SECTORS = 100, 45 46 ATA_ID_SERNO_LEN = 20, 47 ATA_ID_FW_REV_LEN = 8, 48 ATA_ID_PROD_LEN = 40, 49 50 ATA_PCI_CTL_OFS = 2, 51 52 ATA_PIO0 = (1 << 0), 53 ATA_PIO1 = ATA_PIO0 | (1 << 1), 54 ATA_PIO2 = ATA_PIO1 | (1 << 2), 55 ATA_PIO3 = ATA_PIO2 | (1 << 3), 56 ATA_PIO4 = ATA_PIO3 | (1 << 4), 57 ATA_PIO5 = ATA_PIO4 | (1 << 5), 58 ATA_PIO6 = ATA_PIO5 | (1 << 6), 59 60 ATA_SWDMA0 = (1 << 0), 61 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1), 62 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2), 63 64 ATA_SWDMA2_ONLY = (1 << 2), 65 66 ATA_MWDMA0 = (1 << 0), 67 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1), 68 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2), 69 70 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2), 71 ATA_MWDMA2_ONLY = (1 << 2), 72 73 ATA_UDMA0 = (1 << 0), 74 ATA_UDMA1 = ATA_UDMA0 | (1 << 1), 75 ATA_UDMA2 = ATA_UDMA1 | (1 << 2), 76 ATA_UDMA3 = ATA_UDMA2 | (1 << 3), 77 ATA_UDMA4 = ATA_UDMA3 | (1 << 4), 78 ATA_UDMA5 = ATA_UDMA4 | (1 << 5), 79 ATA_UDMA6 = ATA_UDMA5 | (1 << 6), 80 ATA_UDMA7 = ATA_UDMA6 | (1 << 7), 81 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */ 82 83 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */ 84 85 /* DMA-related */ 86 ATA_PRD_SZ = 8, 87 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ), 88 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */ 89 90 ATA_DMA_TABLE_OFS = 4, 91 ATA_DMA_STATUS = 2, 92 ATA_DMA_CMD = 0, 93 ATA_DMA_WR = (1 << 3), 94 ATA_DMA_START = (1 << 0), 95 ATA_DMA_INTR = (1 << 2), 96 ATA_DMA_ERR = (1 << 1), 97 ATA_DMA_ACTIVE = (1 << 0), 98 99 /* bits in ATA command block registers */ 100 ATA_HOB = (1 << 7), /* LBA48 selector */ 101 ATA_NIEN = (1 << 1), /* disable-irq flag */ 102 ATA_LBA = (1 << 6), /* LBA28 selector */ 103 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */ 104 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */ 105 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */ 106 ATA_BUSY = (1 << 7), /* BSY status bit */ 107 ATA_DRDY = (1 << 6), /* device ready */ 108 ATA_DF = (1 << 5), /* device fault */ 109 ATA_DRQ = (1 << 3), /* data request i/o */ 110 ATA_ERR = (1 << 0), /* have an error */ 111 ATA_SRST = (1 << 2), /* software reset */ 112 ATA_ICRC = (1 << 7), /* interface CRC error */ 113 ATA_UNC = (1 << 6), /* uncorrectable media error */ 114 ATA_IDNF = (1 << 4), /* ID not found */ 115 ATA_ABORTED = (1 << 2), /* command aborted */ 116 117 /* ATA command block registers */ 118 ATA_REG_DATA = 0x00, 119 ATA_REG_ERR = 0x01, 120 ATA_REG_NSECT = 0x02, 121 ATA_REG_LBAL = 0x03, 122 ATA_REG_LBAM = 0x04, 123 ATA_REG_LBAH = 0x05, 124 ATA_REG_DEVICE = 0x06, 125 ATA_REG_STATUS = 0x07, 126 127 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */ 128 ATA_REG_CMD = ATA_REG_STATUS, 129 ATA_REG_BYTEL = ATA_REG_LBAM, 130 ATA_REG_BYTEH = ATA_REG_LBAH, 131 ATA_REG_DEVSEL = ATA_REG_DEVICE, 132 ATA_REG_IRQ = ATA_REG_NSECT, 133 134 /* ATA device commands */ 135 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */ 136 ATA_CMD_PIO_READ = 0x20, /* Read sectors with retry */ 137 ATA_CMD_PIO_READ_EXT = 0x24, 138 ATA_CMD_READ_EXT = 0x25, 139 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27, 140 ATA_CMD_READ_MULTI_EXT = 0x29, 141 ATA_CMD_READ_LOG_EXT = 0x2f, 142 ATA_CMD_PIO_WRITE = 0x30, /* write sectors with retry */ 143 ATA_CMD_PIO_WRITE_EXT = 0x34, 144 ATA_CMD_WRITE_EXT = 0x35, 145 ATA_CMD_SET_MAX_EXT = 0x37, 146 ATA_CMD_WRITE_MULTI_EXT = 0x39, 147 ATA_CMD_WRITE_FUA_EXT = 0x3D, 148 ATA_CMD_VERIFY = 0x40, /* read verify sectors with retry */ 149 ATA_CMD_VERIFY_EXT = 0x42, 150 ATA_CMD_FPDMA_READ = 0x60, 151 ATA_CMD_FPDMA_WRITE = 0x61, 152 ATA_CMD_EDD = 0x90, /* execute device diagnostic */ 153 ATA_CMD_INIT_DEV_PARAMS = 0x91, /* initialize device parameters */ 154 ATA_CMD_PACKET = 0xA0, /* ATAPI packet */ 155 ATA_CMD_ID_ATAPI = 0xA1, /* ATAPI identify device */ 156 ATA_CMD_CONF_OVERLAY = 0xB1, 157 ATA_CMD_READ_MULTI = 0xC4, /* read multiple */ 158 ATA_CMD_WRITE_MULTI = 0xC5, /* write multiple */ 159 ATA_CMD_SET_MULTI = 0xC6, /* set multiple mode */ 160 ATA_CMD_READ = 0xC8, /* read DMA with retry */ 161 ATA_CMD_WRITE = 0xCA, /* write DMA with retry */ 162 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE, 163 ATA_CMD_STANDBYNOW1 = 0xE0, /* standby immediate */ 164 ATA_CMD_IDLEIMMEDIATE = 0xE1, /* idle immediate */ 165 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */ 166 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */ 167 ATA_CMD_PMP_READ = 0xE4, /* read buffer */ 168 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */ 169 ATA_CMD_SLEEP = 0xE6, /* sleep */ 170 ATA_CMD_FLUSH = 0xE7, 171 ATA_CMD_PMP_WRITE = 0xE8, /* write buffer */ 172 ATA_CMD_FLUSH_EXT = 0xEA, 173 ATA_CMD_ID_ATA = 0xEC, /* identify device */ 174 ATA_CMD_SET_FEATURES = 0xEF, /* set features */ 175 ATA_CMD_SEC_FREEZE_LOCK = 0xF5, /* security freeze */ 176 ATA_CMD_READ_NATIVE_MAX = 0xF8, 177 ATA_CMD_SET_MAX = 0xF9, 178 179 /* READ_LOG_EXT pages */ 180 ATA_LOG_SATA_NCQ = 0x10, 181 182 /* READ/WRITE LONG (obsolete) */ 183 ATA_CMD_READ_LONG = 0x22, 184 ATA_CMD_READ_LONG_ONCE = 0x23, 185 ATA_CMD_WRITE_LONG = 0x32, 186 ATA_CMD_WRITE_LONG_ONCE = 0x33, 187 188 /* SETFEATURES stuff */ 189 SETFEATURES_XFER = 0x03, 190 XFER_UDMA_7 = 0x47, 191 XFER_UDMA_6 = 0x46, 192 XFER_UDMA_5 = 0x45, 193 XFER_UDMA_4 = 0x44, 194 XFER_UDMA_3 = 0x43, 195 XFER_UDMA_2 = 0x42, 196 XFER_UDMA_1 = 0x41, 197 XFER_UDMA_0 = 0x40, 198 XFER_MW_DMA_4 = 0x24, /* CFA only */ 199 XFER_MW_DMA_3 = 0x23, /* CFA only */ 200 XFER_MW_DMA_2 = 0x22, 201 XFER_MW_DMA_1 = 0x21, 202 XFER_MW_DMA_0 = 0x20, 203 XFER_SW_DMA_2 = 0x12, 204 XFER_SW_DMA_1 = 0x11, 205 XFER_SW_DMA_0 = 0x10, 206 XFER_PIO_6 = 0x0E, /* CFA only */ 207 XFER_PIO_5 = 0x0D, /* CFA only */ 208 XFER_PIO_4 = 0x0C, 209 XFER_PIO_3 = 0x0B, 210 XFER_PIO_2 = 0x0A, 211 XFER_PIO_1 = 0x09, 212 XFER_PIO_0 = 0x08, 213 XFER_PIO_SLOW = 0x00, 214 215 SETFEATURES_WC_ON = 0x02, /* Enable write cache */ 216 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */ 217 218 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */ 219 220 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */ 221 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */ 222 223 /* SETFEATURE Sector counts for SATA features */ 224 SATA_AN = 0x05, /* Asynchronous Notification */ 225 SATA_DIPM = 0x03, /* Device Initiated Power Management */ 226 227 /* feature values for SET_MAX */ 228 ATA_SET_MAX_ADDR = 0x00, 229 ATA_SET_MAX_PASSWD = 0x01, 230 ATA_SET_MAX_LOCK = 0x02, 231 ATA_SET_MAX_UNLOCK = 0x03, 232 ATA_SET_MAX_FREEZE_LOCK = 0x04, 233 234 /* feature values for DEVICE CONFIGURATION OVERLAY */ 235 ATA_DCO_RESTORE = 0xC0, 236 ATA_DCO_FREEZE_LOCK = 0xC1, 237 ATA_DCO_IDENTIFY = 0xC2, 238 ATA_DCO_SET = 0xC3, 239 240 /* ATAPI stuff */ 241 ATAPI_PKT_DMA = (1 << 0), 242 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir: 243 0=to device, 1=to host */ 244 ATAPI_CDB_LEN = 16, 245 246 /* PMP stuff */ 247 SATA_PMP_MAX_PORTS = 15, 248 SATA_PMP_CTRL_PORT = 15, 249 250 SATA_PMP_GSCR_DWORDS = 128, 251 SATA_PMP_GSCR_PROD_ID = 0, 252 SATA_PMP_GSCR_REV = 1, 253 SATA_PMP_GSCR_PORT_INFO = 2, 254 SATA_PMP_GSCR_ERROR = 32, 255 SATA_PMP_GSCR_ERROR_EN = 33, 256 SATA_PMP_GSCR_FEAT = 64, 257 SATA_PMP_GSCR_FEAT_EN = 96, 258 259 SATA_PMP_PSCR_STATUS = 0, 260 SATA_PMP_PSCR_ERROR = 1, 261 SATA_PMP_PSCR_CONTROL = 2, 262 263 SATA_PMP_FEAT_BIST = (1 << 0), 264 SATA_PMP_FEAT_PMREQ = (1 << 1), 265 SATA_PMP_FEAT_DYNSSC = (1 << 2), 266 SATA_PMP_FEAT_NOTIFY = (1 << 3), 267 268 /* cable types */ 269 ATA_CBL_NONE = 0, 270 ATA_CBL_PATA40 = 1, 271 ATA_CBL_PATA80 = 2, 272 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */ 273 ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */ 274 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */ 275 ATA_CBL_SATA = 6, 276 277 /* SATA Status and Control Registers */ 278 SCR_STATUS = 0, 279 SCR_ERROR = 1, 280 SCR_CONTROL = 2, 281 SCR_ACTIVE = 3, 282 SCR_NOTIFICATION = 4, 283 284 /* SError bits */ 285 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */ 286 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */ 287 SERR_DATA = (1 << 8), /* unrecovered data error */ 288 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */ 289 SERR_PROTOCOL = (1 << 10), /* protocol violation */ 290 SERR_INTERNAL = (1 << 11), /* host internal error */ 291 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */ 292 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */ 293 SERR_COMM_WAKE = (1 << 18), /* Comm wake */ 294 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */ 295 SERR_DISPARITY = (1 << 20), /* Disparity */ 296 SERR_CRC = (1 << 21), /* CRC error */ 297 SERR_HANDSHAKE = (1 << 22), /* Handshake error */ 298 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */ 299 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */ 300 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */ 301 SERR_DEV_XCHG = (1 << 26), /* device exchanged */ 302 303 /* struct ata_taskfile flags */ 304 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */ 305 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */ 306 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */ 307 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */ 308 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */ 309 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */ 310 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */ 311 312 /* protocol flags */ 313 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */ 314 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */ 315 ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA, 316 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */ 317 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */ 318}; 319 320enum ata_tf_protocols { 321 /* ATA taskfile protocols */ 322 ATA_PROT_UNKNOWN, /* unknown/invalid */ 323 ATA_PROT_NODATA, /* no data */ 324 ATA_PROT_PIO, /* PIO data xfer */ 325 ATA_PROT_DMA, /* DMA */ 326 ATA_PROT_NCQ, /* NCQ */ 327 ATAPI_PROT_NODATA, /* packet command, no data */ 328 ATAPI_PROT_PIO, /* packet command, PIO data xfer*/ 329 ATAPI_PROT_DMA, /* packet command with special DMA sauce */ 330}; 331 332enum ata_ioctls { 333 ATA_IOC_GET_IO32 = 0x309, 334 ATA_IOC_SET_IO32 = 0x324, 335}; 336 337enum ata_dev_typed { 338 ATA_DEV_ATA, /* ATA device */ 339 ATA_DEV_ATAPI, /* ATAPI device */ 340 ATA_DEV_PMP, /* Port Multiplier Port */ 341 ATA_DEV_UNKNOWN, /* unknown */ 342}; 343 344struct ata_taskfile { 345 unsigned long flags; /* ATA_TFLAG_xxx */ 346 u8 protocol; /* ATA_PROT_xxx */ 347 348 u8 ctl; /* control reg */ 349 350 u8 hob_feature; /* additional data */ 351 u8 hob_nsect; /* to support LBA48 */ 352 u8 hob_lbal; 353 u8 hob_lbam; 354 u8 hob_lbah; 355 356 u8 feature; 357 u8 nsect; 358 u8 lbal; 359 u8 lbam; 360 u8 lbah; 361 362 u8 device; 363 364 u8 command; /* IO operation */ 365}; 366 367/* 368 * protocol tests 369 */ 370static inline unsigned int ata_prot_flags(u8 prot) 371{ 372 switch (prot) { 373 case ATA_PROT_NODATA: 374 return 0; 375 case ATA_PROT_PIO: 376 return ATA_PROT_FLAG_PIO; 377 case ATA_PROT_DMA: 378 return ATA_PROT_FLAG_DMA; 379 case ATA_PROT_NCQ: 380 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ; 381 case ATAPI_PROT_NODATA: 382 return ATA_PROT_FLAG_ATAPI; 383 case ATAPI_PROT_PIO: 384 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO; 385 case ATAPI_PROT_DMA: 386 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA; 387 } 388 return 0; 389} 390 391static inline int ata_is_atapi(u8 prot) 392{ 393 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI; 394} 395 396static inline int ata_is_nodata(u8 prot) 397{ 398 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA); 399} 400 401static inline int ata_is_pio(u8 prot) 402{ 403 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO; 404} 405 406static inline int ata_is_dma(u8 prot) 407{ 408 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA; 409} 410 411static inline int ata_is_ncq(u8 prot) 412{ 413 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ; 414} 415 416static inline int ata_is_data(u8 prot) 417{ 418 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA; 419} 420 421/* 422 * id tests 423 */ 424#define ata_id_is_ata(id) (((id)[0] & (1 << 15)) == 0) 425#define ata_id_has_lba(id) ((id)[49] & (1 << 9)) 426#define ata_id_has_dma(id) ((id)[49] & (1 << 8)) 427#define ata_id_has_ncq(id) ((id)[76] & (1 << 8)) 428#define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1) 429#define ata_id_removeable(id) ((id)[0] & (1 << 7)) 430#define ata_id_iordy_disable(id) ((id)[49] & (1 << 10)) 431#define ata_id_has_iordy(id) ((id)[49] & (1 << 11)) 432 433#define ata_id_u32(id,n) \ 434 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)])) 435#define ata_id_u64(id,n) \ 436 ( ((u64) (id)[(n) + 3] << 48) | \ 437 ((u64) (id)[(n) + 2] << 32) | \ 438 ((u64) (id)[(n) + 1] << 16) | \ 439 ((u64) (id)[(n) + 0]) ) 440 441#define ata_id_cdb_intr(id) (((id)[0] & 0x60) == 0x20) 442 443static inline int ata_id_has_fua(const u16 *id) 444{ 445 if ((id[84] & 0xC000) != 0x4000) 446 return 0; 447 return id[84] & (1 << 6); 448} 449 450static inline int ata_id_has_flush(const u16 *id) 451{ 452 if ((id[83] & 0xC000) != 0x4000) 453 return 0; 454 return id[83] & (1 << 12); 455} 456 457static inline int ata_id_has_flush_ext(const u16 *id) 458{ 459 if ((id[83] & 0xC000) != 0x4000) 460 return 0; 461 return id[83] & (1 << 13); 462} 463 464static inline int ata_id_has_lba48(const u16 *id) 465{ 466 if ((id[83] & 0xC000) != 0x4000) 467 return 0; 468 if (!ata_id_u64(id, 100)) 469 return 0; 470 return id[83] & (1 << 10); 471} 472 473static inline int ata_id_hpa_enabled(const u16 *id) 474{ 475 /* Yes children, word 83 valid bits cover word 82 data */ 476 if ((id[83] & 0xC000) != 0x4000) 477 return 0; 478 /* And 87 covers 85-87 */ 479 if ((id[87] & 0xC000) != 0x4000) 480 return 0; 481 /* Check command sets enabled as well as supported */ 482 if ((id[85] & ( 1 << 10)) == 0) 483 return 0; 484 return id[82] & (1 << 10); 485} 486 487static inline int ata_id_has_wcache(const u16 *id) 488{ 489 /* Yes children, word 83 valid bits cover word 82 data */ 490 if ((id[83] & 0xC000) != 0x4000) 491 return 0; 492 return id[82] & (1 << 5); 493} 494 495static inline int ata_id_has_pm(const u16 *id) 496{ 497 if ((id[83] & 0xC000) != 0x4000) 498 return 0; 499 return id[82] & (1 << 3); 500} 501 502static inline int ata_id_rahead_enabled(const u16 *id) 503{ 504 if ((id[87] & 0xC000) != 0x4000) 505 return 0; 506 return id[85] & (1 << 6); 507} 508 509static inline int ata_id_wcache_enabled(const u16 *id) 510{ 511 if ((id[87] & 0xC000) != 0x4000) 512 return 0; 513 return id[85] & (1 << 5); 514} 515 516static inline unsigned int ata_id_major_version(const u16 *id) 517{ 518 unsigned int mver; 519 520 if (id[ATA_ID_MAJOR_VER] == 0xFFFF) 521 return 0; 522 523 for (mver = 14; mver >= 1; mver--) 524 if (id[ATA_ID_MAJOR_VER] & (1 << mver)) 525 break; 526 return mver; 527} 528 529static inline int ata_id_is_sata(const u16 *id) 530{ 531 return ata_id_major_version(id) >= 5 && id[93] == 0; 532} 533 534static inline int ata_id_has_tpm(const u16 *id) 535{ 536 /* The TPM bits are only valid on ATA8 */ 537 if (ata_id_major_version(id) < 8) 538 return 0; 539 if ((id[48] & 0xC000) != 0x4000) 540 return 0; 541 return id[48] & (1 << 0); 542} 543 544static inline int ata_id_has_dword_io(const u16 *id) 545{ 546 /* ATA 8 reuses this flag for "trusted" computing */ 547 if (ata_id_major_version(id) > 7) 548 return 0; 549 if (id[48] & (1 << 0)) 550 return 1; 551 return 0; 552} 553 554static inline int ata_id_current_chs_valid(const u16 *id) 555{ 556 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command 557 has not been issued to the device then the values of 558 id[54] to id[56] are vendor specific. */ 559 return (id[53] & 0x01) && /* Current translation valid */ 560 id[54] && /* cylinders in current translation */ 561 id[55] && /* heads in current translation */ 562 id[55] <= 16 && 563 id[56]; /* sectors in current translation */ 564} 565 566static inline int ata_id_is_cfa(const u16 *id) 567{ 568 u16 v = id[0]; 569 if (v == 0x848A) /* Standard CF */ 570 return 1; 571 /* Could be CF hiding as standard ATA */ 572 if (ata_id_major_version(id) >= 3 && id[82] != 0xFFFF && 573 (id[82] & ( 1 << 2))) 574 return 1; 575 return 0; 576} 577 578static inline int ata_drive_40wire(const u16 *dev_id) 579{ 580 if (ata_id_is_sata(dev_id)) 581 return 0; /* SATA */ 582 if ((dev_id[93] & 0xE000) == 0x6000) 583 return 0; /* 80 wire */ 584 return 1; 585} 586 587static inline int ata_drive_40wire_relaxed(const u16 *dev_id) 588{ 589 if ((dev_id[93] & 0x2000) == 0x2000) 590 return 0; /* 80 wire */ 591 return 1; 592} 593 594static inline int atapi_cdb_len(const u16 *dev_id) 595{ 596 u16 tmp = dev_id[0] & 0x3; 597 switch (tmp) { 598 case 0: return 12; 599 case 1: return 16; 600 default: return -1; 601 } 602} 603 604static inline int atapi_command_packet_set(const u16 *dev_id) 605{ 606 return (dev_id[0] >> 8) & 0x1f; 607} 608 609static inline int atapi_id_dmadir(const u16 *dev_id) 610{ 611 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000); 612} 613 614static inline int is_multi_taskfile(struct ata_taskfile *tf) 615{ 616 return (tf->command == ATA_CMD_READ_MULTI) || 617 (tf->command == ATA_CMD_WRITE_MULTI) || 618 (tf->command == ATA_CMD_READ_MULTI_EXT) || 619 (tf->command == ATA_CMD_WRITE_MULTI_EXT) || 620 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); 621} 622 623static inline int ata_ok(u8 status) 624{ 625 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR)) 626 == ATA_DRDY); 627} 628 629static inline int lba_28_ok(u64 block, u32 n_block) 630{ 631 /* check the ending block number */ 632 return ((block + n_block - 1) < ((u64)1 << 28)) && (n_block <= 256); 633} 634 635static inline int lba_48_ok(u64 block, u32 n_block) 636{ 637 /* check the ending block number */ 638 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536); 639} 640 641#define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff) 642#define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16) 643#define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff) 644#define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf) 645 646u64 ata_id_n_sectors(u16 *id); 647u32 ata_dev_classify(u32 sig); 648void ata_id_c_string(const u16 *id, unsigned char *s, 649 unsigned int ofs, unsigned int len); 650void ata_dump_id(u16 *id); 651void ata_swap_buf_le16(u16 *buf, unsigned int buf_words); 652 653#endif /* __LIBATA_H__ */ 654