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 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21 * MA 02111-1307 USA 22 * 23 */ 24 25 #ifndef __LIBATA_H__ 26 #define __LIBATA_H__ 27 28 #include <common.h> 29 30 enum { 31 /* various global constants */ 32 ATA_MAX_DEVICES = 2, /* per bus/port */ 33 ATA_MAX_PRD = 256, /* we could make these 256/256 */ 34 ATA_SECT_SIZE = 512, 35 ATA_MAX_SECTORS_128 = 128, 36 ATA_MAX_SECTORS = 256, 37 ATA_MAX_SECTORS_LBA48 = 65535, 38 ATA_MAX_SECTORS_TAPE = 65535, 39 40 ATA_ID_WORDS = 256, 41 ATA_ID_SERNO = 10, 42 ATA_ID_FW_REV = 23, 43 ATA_ID_PROD = 27, 44 ATA_ID_OLD_PIO_MODES = 51, 45 ATA_ID_FIELD_VALID = 53, 46 ATA_ID_LBA_SECTORS = 60, 47 ATA_ID_MWDMA_MODES = 63, 48 ATA_ID_PIO_MODES = 64, 49 ATA_ID_EIDE_DMA_MIN = 65, 50 ATA_ID_EIDE_PIO = 67, 51 ATA_ID_EIDE_PIO_IORDY = 68, 52 ATA_ID_PIO4 = (1 << 1), 53 ATA_ID_QUEUE_DEPTH = 75, 54 ATA_ID_SATA_CAP = 76, 55 ATA_ID_SATA_FEATURES = 78, 56 ATA_ID_SATA_FEATURES_EN = 79, 57 ATA_ID_MAJOR_VER = 80, 58 ATA_ID_MINOR_VER = 81, 59 ATA_ID_UDMA_MODES = 88, 60 ATA_ID_LBA48_SECTORS = 100, 61 62 ATA_ID_SERNO_LEN = 20, 63 ATA_ID_FW_REV_LEN = 8, 64 ATA_ID_PROD_LEN = 40, 65 66 ATA_PCI_CTL_OFS = 2, 67 68 ATA_PIO0 = (1 << 0), 69 ATA_PIO1 = ATA_PIO0 | (1 << 1), 70 ATA_PIO2 = ATA_PIO1 | (1 << 2), 71 ATA_PIO3 = ATA_PIO2 | (1 << 3), 72 ATA_PIO4 = ATA_PIO3 | (1 << 4), 73 ATA_PIO5 = ATA_PIO4 | (1 << 5), 74 ATA_PIO6 = ATA_PIO5 | (1 << 6), 75 76 ATA_SWDMA0 = (1 << 0), 77 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1), 78 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2), 79 80 ATA_SWDMA2_ONLY = (1 << 2), 81 82 ATA_MWDMA0 = (1 << 0), 83 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1), 84 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2), 85 86 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2), 87 ATA_MWDMA2_ONLY = (1 << 2), 88 89 ATA_UDMA0 = (1 << 0), 90 ATA_UDMA1 = ATA_UDMA0 | (1 << 1), 91 ATA_UDMA2 = ATA_UDMA1 | (1 << 2), 92 ATA_UDMA3 = ATA_UDMA2 | (1 << 3), 93 ATA_UDMA4 = ATA_UDMA3 | (1 << 4), 94 ATA_UDMA5 = ATA_UDMA4 | (1 << 5), 95 ATA_UDMA6 = ATA_UDMA5 | (1 << 6), 96 ATA_UDMA7 = ATA_UDMA6 | (1 << 7), 97 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */ 98 99 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */ 100 101 /* DMA-related */ 102 ATA_PRD_SZ = 8, 103 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ), 104 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */ 105 106 ATA_DMA_TABLE_OFS = 4, 107 ATA_DMA_STATUS = 2, 108 ATA_DMA_CMD = 0, 109 ATA_DMA_WR = (1 << 3), 110 ATA_DMA_START = (1 << 0), 111 ATA_DMA_INTR = (1 << 2), 112 ATA_DMA_ERR = (1 << 1), 113 ATA_DMA_ACTIVE = (1 << 0), 114 115 /* bits in ATA command block registers */ 116 ATA_HOB = (1 << 7), /* LBA48 selector */ 117 ATA_NIEN = (1 << 1), /* disable-irq flag */ 118 ATA_LBA = (1 << 6), /* LBA28 selector */ 119 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */ 120 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */ 121 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */ 122 ATA_BUSY = (1 << 7), /* BSY status bit */ 123 ATA_DRDY = (1 << 6), /* device ready */ 124 ATA_DF = (1 << 5), /* device fault */ 125 ATA_DRQ = (1 << 3), /* data request i/o */ 126 ATA_ERR = (1 << 0), /* have an error */ 127 ATA_SRST = (1 << 2), /* software reset */ 128 ATA_ICRC = (1 << 7), /* interface CRC error */ 129 ATA_UNC = (1 << 6), /* uncorrectable media error */ 130 ATA_IDNF = (1 << 4), /* ID not found */ 131 ATA_ABORTED = (1 << 2), /* command aborted */ 132 133 /* ATA command block registers */ 134 ATA_REG_DATA = 0x00, 135 ATA_REG_ERR = 0x01, 136 ATA_REG_NSECT = 0x02, 137 ATA_REG_LBAL = 0x03, 138 ATA_REG_LBAM = 0x04, 139 ATA_REG_LBAH = 0x05, 140 ATA_REG_DEVICE = 0x06, 141 ATA_REG_STATUS = 0x07, 142 143 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */ 144 ATA_REG_CMD = ATA_REG_STATUS, 145 ATA_REG_BYTEL = ATA_REG_LBAM, 146 ATA_REG_BYTEH = ATA_REG_LBAH, 147 ATA_REG_DEVSEL = ATA_REG_DEVICE, 148 ATA_REG_IRQ = ATA_REG_NSECT, 149 150 /* ATA device commands */ 151 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */ 152 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */ 153 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */ 154 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */ 155 ATA_CMD_EDD = 0x90, /* execute device diagnostic */ 156 ATA_CMD_FLUSH = 0xE7, 157 ATA_CMD_FLUSH_EXT = 0xEA, 158 ATA_CMD_ID_ATA = 0xEC, 159 ATA_CMD_ID_ATAPI = 0xA1, 160 ATA_CMD_READ = 0xC8, 161 ATA_CMD_READ_EXT = 0x25, 162 ATA_CMD_WRITE = 0xCA, 163 ATA_CMD_WRITE_EXT = 0x35, 164 ATA_CMD_WRITE_FUA_EXT = 0x3D, 165 ATA_CMD_FPDMA_READ = 0x60, 166 ATA_CMD_FPDMA_WRITE = 0x61, 167 ATA_CMD_PIO_READ = 0x20, 168 ATA_CMD_PIO_READ_EXT = 0x24, 169 ATA_CMD_PIO_WRITE = 0x30, 170 ATA_CMD_PIO_WRITE_EXT = 0x34, 171 ATA_CMD_READ_MULTI = 0xC4, 172 ATA_CMD_READ_MULTI_EXT = 0x29, 173 ATA_CMD_WRITE_MULTI = 0xC5, 174 ATA_CMD_WRITE_MULTI_EXT = 0x39, 175 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE, 176 ATA_CMD_SET_FEATURES = 0xEF, 177 ATA_CMD_SET_MULTI = 0xC6, 178 ATA_CMD_PACKET = 0xA0, 179 ATA_CMD_VERIFY = 0x40, 180 ATA_CMD_VERIFY_EXT = 0x42, 181 ATA_CMD_STANDBYNOW1 = 0xE0, 182 ATA_CMD_IDLEIMMEDIATE = 0xE1, 183 ATA_CMD_SLEEP = 0xE6, 184 ATA_CMD_INIT_DEV_PARAMS = 0x91, 185 ATA_CMD_READ_NATIVE_MAX = 0xF8, 186 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27, 187 ATA_CMD_SET_MAX = 0xF9, 188 ATA_CMD_SET_MAX_EXT = 0x37, 189 ATA_CMD_READ_LOG_EXT = 0x2f, 190 ATA_CMD_PMP_READ = 0xE4, 191 ATA_CMD_PMP_WRITE = 0xE8, 192 ATA_CMD_CONF_OVERLAY = 0xB1, 193 ATA_CMD_SEC_FREEZE_LOCK = 0xF5, 194 195 /* READ_LOG_EXT pages */ 196 ATA_LOG_SATA_NCQ = 0x10, 197 198 /* READ/WRITE LONG (obsolete) */ 199 ATA_CMD_READ_LONG = 0x22, 200 ATA_CMD_READ_LONG_ONCE = 0x23, 201 ATA_CMD_WRITE_LONG = 0x32, 202 ATA_CMD_WRITE_LONG_ONCE = 0x33, 203 204 /* SETFEATURES stuff */ 205 SETFEATURES_XFER = 0x03, 206 XFER_UDMA_7 = 0x47, 207 XFER_UDMA_6 = 0x46, 208 XFER_UDMA_5 = 0x45, 209 XFER_UDMA_4 = 0x44, 210 XFER_UDMA_3 = 0x43, 211 XFER_UDMA_2 = 0x42, 212 XFER_UDMA_1 = 0x41, 213 XFER_UDMA_0 = 0x40, 214 XFER_MW_DMA_4 = 0x24, /* CFA only */ 215 XFER_MW_DMA_3 = 0x23, /* CFA only */ 216 XFER_MW_DMA_2 = 0x22, 217 XFER_MW_DMA_1 = 0x21, 218 XFER_MW_DMA_0 = 0x20, 219 XFER_SW_DMA_2 = 0x12, 220 XFER_SW_DMA_1 = 0x11, 221 XFER_SW_DMA_0 = 0x10, 222 XFER_PIO_6 = 0x0E, /* CFA only */ 223 XFER_PIO_5 = 0x0D, /* CFA only */ 224 XFER_PIO_4 = 0x0C, 225 XFER_PIO_3 = 0x0B, 226 XFER_PIO_2 = 0x0A, 227 XFER_PIO_1 = 0x09, 228 XFER_PIO_0 = 0x08, 229 XFER_PIO_SLOW = 0x00, 230 231 SETFEATURES_WC_ON = 0x02, /* Enable write cache */ 232 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */ 233 234 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */ 235 236 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */ 237 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */ 238 239 /* SETFEATURE Sector counts for SATA features */ 240 SATA_AN = 0x05, /* Asynchronous Notification */ 241 SATA_DIPM = 0x03, /* Device Initiated Power Management */ 242 243 /* feature values for SET_MAX */ 244 ATA_SET_MAX_ADDR = 0x00, 245 ATA_SET_MAX_PASSWD = 0x01, 246 ATA_SET_MAX_LOCK = 0x02, 247 ATA_SET_MAX_UNLOCK = 0x03, 248 ATA_SET_MAX_FREEZE_LOCK = 0x04, 249 250 /* feature values for DEVICE CONFIGURATION OVERLAY */ 251 ATA_DCO_RESTORE = 0xC0, 252 ATA_DCO_FREEZE_LOCK = 0xC1, 253 ATA_DCO_IDENTIFY = 0xC2, 254 ATA_DCO_SET = 0xC3, 255 256 /* ATAPI stuff */ 257 ATAPI_PKT_DMA = (1 << 0), 258 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir: 259 0=to device, 1=to host */ 260 ATAPI_CDB_LEN = 16, 261 262 /* PMP stuff */ 263 SATA_PMP_MAX_PORTS = 15, 264 SATA_PMP_CTRL_PORT = 15, 265 266 SATA_PMP_GSCR_DWORDS = 128, 267 SATA_PMP_GSCR_PROD_ID = 0, 268 SATA_PMP_GSCR_REV = 1, 269 SATA_PMP_GSCR_PORT_INFO = 2, 270 SATA_PMP_GSCR_ERROR = 32, 271 SATA_PMP_GSCR_ERROR_EN = 33, 272 SATA_PMP_GSCR_FEAT = 64, 273 SATA_PMP_GSCR_FEAT_EN = 96, 274 275 SATA_PMP_PSCR_STATUS = 0, 276 SATA_PMP_PSCR_ERROR = 1, 277 SATA_PMP_PSCR_CONTROL = 2, 278 279 SATA_PMP_FEAT_BIST = (1 << 0), 280 SATA_PMP_FEAT_PMREQ = (1 << 1), 281 SATA_PMP_FEAT_DYNSSC = (1 << 2), 282 SATA_PMP_FEAT_NOTIFY = (1 << 3), 283 284 /* cable types */ 285 ATA_CBL_NONE = 0, 286 ATA_CBL_PATA40 = 1, 287 ATA_CBL_PATA80 = 2, 288 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */ 289 ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */ 290 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */ 291 ATA_CBL_SATA = 6, 292 293 /* SATA Status and Control Registers */ 294 SCR_STATUS = 0, 295 SCR_ERROR = 1, 296 SCR_CONTROL = 2, 297 SCR_ACTIVE = 3, 298 SCR_NOTIFICATION = 4, 299 300 /* SError bits */ 301 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */ 302 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */ 303 SERR_DATA = (1 << 8), /* unrecovered data error */ 304 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */ 305 SERR_PROTOCOL = (1 << 10), /* protocol violation */ 306 SERR_INTERNAL = (1 << 11), /* host internal error */ 307 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */ 308 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */ 309 SERR_COMM_WAKE = (1 << 18), /* Comm wake */ 310 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */ 311 SERR_DISPARITY = (1 << 20), /* Disparity */ 312 SERR_CRC = (1 << 21), /* CRC error */ 313 SERR_HANDSHAKE = (1 << 22), /* Handshake error */ 314 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */ 315 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */ 316 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */ 317 SERR_DEV_XCHG = (1 << 26), /* device exchanged */ 318 319 /* struct ata_taskfile flags */ 320 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */ 321 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */ 322 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */ 323 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */ 324 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */ 325 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */ 326 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */ 327 328 /* protocol flags */ 329 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */ 330 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */ 331 ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA, 332 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */ 333 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */ 334 }; 335 336 enum ata_tf_protocols { 337 /* ATA taskfile protocols */ 338 ATA_PROT_UNKNOWN, /* unknown/invalid */ 339 ATA_PROT_NODATA, /* no data */ 340 ATA_PROT_PIO, /* PIO data xfer */ 341 ATA_PROT_DMA, /* DMA */ 342 ATA_PROT_NCQ, /* NCQ */ 343 ATAPI_PROT_NODATA, /* packet command, no data */ 344 ATAPI_PROT_PIO, /* packet command, PIO data xfer*/ 345 ATAPI_PROT_DMA, /* packet command with special DMA sauce */ 346 }; 347 348 enum ata_ioctls { 349 ATA_IOC_GET_IO32 = 0x309, 350 ATA_IOC_SET_IO32 = 0x324, 351 }; 352 353 enum ata_dev_typed { 354 ATA_DEV_ATA, /* ATA device */ 355 ATA_DEV_ATAPI, /* ATAPI device */ 356 ATA_DEV_PMP, /* Port Multiplier Port */ 357 ATA_DEV_UNKNOWN, /* unknown */ 358 }; 359 360 struct ata_taskfile { 361 unsigned long flags; /* ATA_TFLAG_xxx */ 362 u8 protocol; /* ATA_PROT_xxx */ 363 364 u8 ctl; /* control reg */ 365 366 u8 hob_feature; /* additional data */ 367 u8 hob_nsect; /* to support LBA48 */ 368 u8 hob_lbal; 369 u8 hob_lbam; 370 u8 hob_lbah; 371 372 u8 feature; 373 u8 nsect; 374 u8 lbal; 375 u8 lbam; 376 u8 lbah; 377 378 u8 device; 379 380 u8 command; /* IO operation */ 381 }; 382 383 /* 384 * protocol tests 385 */ 386 static inline unsigned int ata_prot_flags(u8 prot) 387 { 388 switch (prot) { 389 case ATA_PROT_NODATA: 390 return 0; 391 case ATA_PROT_PIO: 392 return ATA_PROT_FLAG_PIO; 393 case ATA_PROT_DMA: 394 return ATA_PROT_FLAG_DMA; 395 case ATA_PROT_NCQ: 396 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ; 397 case ATAPI_PROT_NODATA: 398 return ATA_PROT_FLAG_ATAPI; 399 case ATAPI_PROT_PIO: 400 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO; 401 case ATAPI_PROT_DMA: 402 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA; 403 } 404 return 0; 405 } 406 407 static inline int ata_is_atapi(u8 prot) 408 { 409 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI; 410 } 411 412 static inline int ata_is_nodata(u8 prot) 413 { 414 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA); 415 } 416 417 static inline int ata_is_pio(u8 prot) 418 { 419 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO; 420 } 421 422 static inline int ata_is_dma(u8 prot) 423 { 424 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA; 425 } 426 427 static inline int ata_is_ncq(u8 prot) 428 { 429 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ; 430 } 431 432 static inline int ata_is_data(u8 prot) 433 { 434 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA; 435 } 436 437 /* 438 * id tests 439 */ 440 #define ata_id_is_ata(id) (((id)[0] & (1 << 15)) == 0) 441 #define ata_id_has_lba(id) ((id)[49] & (1 << 9)) 442 #define ata_id_has_dma(id) ((id)[49] & (1 << 8)) 443 #define ata_id_has_ncq(id) ((id)[76] & (1 << 8)) 444 #define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1) 445 #define ata_id_removeable(id) ((id)[0] & (1 << 7)) 446 #define ata_id_iordy_disable(id) ((id)[49] & (1 << 10)) 447 #define ata_id_has_iordy(id) ((id)[49] & (1 << 11)) 448 449 #define ata_id_u32(id,n) \ 450 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)])) 451 #define ata_id_u64(id,n) \ 452 ( ((u64) (id)[(n) + 3] << 48) | \ 453 ((u64) (id)[(n) + 2] << 32) | \ 454 ((u64) (id)[(n) + 1] << 16) | \ 455 ((u64) (id)[(n) + 0]) ) 456 457 #define ata_id_cdb_intr(id) (((id)[0] & 0x60) == 0x20) 458 459 static inline int ata_id_has_fua(const u16 *id) 460 { 461 if ((id[84] & 0xC000) != 0x4000) 462 return 0; 463 return id[84] & (1 << 6); 464 } 465 466 static inline int ata_id_has_flush(const u16 *id) 467 { 468 if ((id[83] & 0xC000) != 0x4000) 469 return 0; 470 return id[83] & (1 << 12); 471 } 472 473 static inline int ata_id_has_flush_ext(const u16 *id) 474 { 475 if ((id[83] & 0xC000) != 0x4000) 476 return 0; 477 return id[83] & (1 << 13); 478 } 479 480 static inline int ata_id_has_lba48(const u16 *id) 481 { 482 if ((id[83] & 0xC000) != 0x4000) 483 return 0; 484 if (!ata_id_u64(id, 100)) 485 return 0; 486 return id[83] & (1 << 10); 487 } 488 489 static inline int ata_id_hpa_enabled(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 /* And 87 covers 85-87 */ 495 if ((id[87] & 0xC000) != 0x4000) 496 return 0; 497 /* Check command sets enabled as well as supported */ 498 if ((id[85] & ( 1 << 10)) == 0) 499 return 0; 500 return id[82] & (1 << 10); 501 } 502 503 static inline int ata_id_has_wcache(const u16 *id) 504 { 505 /* Yes children, word 83 valid bits cover word 82 data */ 506 if ((id[83] & 0xC000) != 0x4000) 507 return 0; 508 return id[82] & (1 << 5); 509 } 510 511 static inline int ata_id_has_pm(const u16 *id) 512 { 513 if ((id[83] & 0xC000) != 0x4000) 514 return 0; 515 return id[82] & (1 << 3); 516 } 517 518 static inline int ata_id_rahead_enabled(const u16 *id) 519 { 520 if ((id[87] & 0xC000) != 0x4000) 521 return 0; 522 return id[85] & (1 << 6); 523 } 524 525 static inline int ata_id_wcache_enabled(const u16 *id) 526 { 527 if ((id[87] & 0xC000) != 0x4000) 528 return 0; 529 return id[85] & (1 << 5); 530 } 531 532 static inline unsigned int ata_id_major_version(const u16 *id) 533 { 534 unsigned int mver; 535 536 if (id[ATA_ID_MAJOR_VER] == 0xFFFF) 537 return 0; 538 539 for (mver = 14; mver >= 1; mver--) 540 if (id[ATA_ID_MAJOR_VER] & (1 << mver)) 541 break; 542 return mver; 543 } 544 545 static inline int ata_id_is_sata(const u16 *id) 546 { 547 return ata_id_major_version(id) >= 5 && id[93] == 0; 548 } 549 550 static inline int ata_id_has_tpm(const u16 *id) 551 { 552 /* The TPM bits are only valid on ATA8 */ 553 if (ata_id_major_version(id) < 8) 554 return 0; 555 if ((id[48] & 0xC000) != 0x4000) 556 return 0; 557 return id[48] & (1 << 0); 558 } 559 560 static inline int ata_id_has_dword_io(const u16 *id) 561 { 562 /* ATA 8 reuses this flag for "trusted" computing */ 563 if (ata_id_major_version(id) > 7) 564 return 0; 565 if (id[48] & (1 << 0)) 566 return 1; 567 return 0; 568 } 569 570 static inline int ata_id_current_chs_valid(const u16 *id) 571 { 572 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command 573 has not been issued to the device then the values of 574 id[54] to id[56] are vendor specific. */ 575 return (id[53] & 0x01) && /* Current translation valid */ 576 id[54] && /* cylinders in current translation */ 577 id[55] && /* heads in current translation */ 578 id[55] <= 16 && 579 id[56]; /* sectors in current translation */ 580 } 581 582 static inline int ata_id_is_cfa(const u16 *id) 583 { 584 u16 v = id[0]; 585 if (v == 0x848A) /* Standard CF */ 586 return 1; 587 /* Could be CF hiding as standard ATA */ 588 if (ata_id_major_version(id) >= 3 && id[82] != 0xFFFF && 589 (id[82] & ( 1 << 2))) 590 return 1; 591 return 0; 592 } 593 594 static inline int ata_drive_40wire(const u16 *dev_id) 595 { 596 if (ata_id_is_sata(dev_id)) 597 return 0; /* SATA */ 598 if ((dev_id[93] & 0xE000) == 0x6000) 599 return 0; /* 80 wire */ 600 return 1; 601 } 602 603 static inline int ata_drive_40wire_relaxed(const u16 *dev_id) 604 { 605 if ((dev_id[93] & 0x2000) == 0x2000) 606 return 0; /* 80 wire */ 607 return 1; 608 } 609 610 static inline int atapi_cdb_len(const u16 *dev_id) 611 { 612 u16 tmp = dev_id[0] & 0x3; 613 switch (tmp) { 614 case 0: return 12; 615 case 1: return 16; 616 default: return -1; 617 } 618 } 619 620 static inline int atapi_command_packet_set(const u16 *dev_id) 621 { 622 return (dev_id[0] >> 8) & 0x1f; 623 } 624 625 static inline int atapi_id_dmadir(const u16 *dev_id) 626 { 627 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000); 628 } 629 630 static inline int is_multi_taskfile(struct ata_taskfile *tf) 631 { 632 return (tf->command == ATA_CMD_READ_MULTI) || 633 (tf->command == ATA_CMD_WRITE_MULTI) || 634 (tf->command == ATA_CMD_READ_MULTI_EXT) || 635 (tf->command == ATA_CMD_WRITE_MULTI_EXT) || 636 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); 637 } 638 639 static inline int ata_ok(u8 status) 640 { 641 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR)) 642 == ATA_DRDY); 643 } 644 645 static inline int lba_28_ok(u64 block, u32 n_block) 646 { 647 /* check the ending block number */ 648 return ((block + n_block - 1) < ((u64)1 << 28)) && (n_block <= 256); 649 } 650 651 static inline int lba_48_ok(u64 block, u32 n_block) 652 { 653 /* check the ending block number */ 654 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536); 655 } 656 657 #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff) 658 #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16) 659 #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff) 660 #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf) 661 662 u64 ata_id_n_sectors(u16 *id); 663 u32 ata_dev_classify(u32 sig); 664 void ata_id_c_string(const u16 *id, unsigned char *s, 665 unsigned int ofs, unsigned int len); 666 void ata_dump_id(u16 *id); 667 void ata_swap_buf_le16(u16 *buf, unsigned int buf_words); 668 669 #endif /* __LIBATA_H__ */ 670