linux/include/linux/ata.h
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   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/kernel.h>
  33#include <linux/string.h>
  34#include <linux/types.h>
  35#include <asm/byteorder.h>
  36
  37/* defines only for the constants which don't work well as enums */
  38#define ATA_DMA_BOUNDARY        0xffffUL
  39#define ATA_DMA_MASK            0xffffffffULL
  40
  41enum {
  42        /* various global constants */
  43        ATA_MAX_DEVICES         = 2,    /* per bus/port */
  44        ATA_MAX_PRD             = 256,  /* we could make these 256/256 */
  45        ATA_SECT_SIZE           = 512,
  46        ATA_MAX_SECTORS_128     = 128,
  47        ATA_MAX_SECTORS         = 256,
  48        ATA_MAX_SECTORS_LBA48   = 65535,/* TODO: 65536? */
  49        ATA_MAX_SECTORS_TAPE    = 65535,
  50
  51        ATA_ID_WORDS            = 256,
  52        ATA_ID_CONFIG           = 0,
  53        ATA_ID_CYLS             = 1,
  54        ATA_ID_HEADS            = 3,
  55        ATA_ID_SECTORS          = 6,
  56        ATA_ID_SERNO            = 10,
  57        ATA_ID_BUF_SIZE         = 21,
  58        ATA_ID_FW_REV           = 23,
  59        ATA_ID_PROD             = 27,
  60        ATA_ID_MAX_MULTSECT     = 47,
  61        ATA_ID_DWORD_IO         = 48,
  62        ATA_ID_CAPABILITY       = 49,
  63        ATA_ID_OLD_PIO_MODES    = 51,
  64        ATA_ID_OLD_DMA_MODES    = 52,
  65        ATA_ID_FIELD_VALID      = 53,
  66        ATA_ID_CUR_CYLS         = 54,
  67        ATA_ID_CUR_HEADS        = 55,
  68        ATA_ID_CUR_SECTORS      = 56,
  69        ATA_ID_MULTSECT         = 59,
  70        ATA_ID_LBA_CAPACITY     = 60,
  71        ATA_ID_SWDMA_MODES      = 62,
  72        ATA_ID_MWDMA_MODES      = 63,
  73        ATA_ID_PIO_MODES        = 64,
  74        ATA_ID_EIDE_DMA_MIN     = 65,
  75        ATA_ID_EIDE_DMA_TIME    = 66,
  76        ATA_ID_EIDE_PIO         = 67,
  77        ATA_ID_EIDE_PIO_IORDY   = 68,
  78        ATA_ID_ADDITIONAL_SUPP  = 69,
  79        ATA_ID_QUEUE_DEPTH      = 75,
  80        ATA_ID_MAJOR_VER        = 80,
  81        ATA_ID_COMMAND_SET_1    = 82,
  82        ATA_ID_COMMAND_SET_2    = 83,
  83        ATA_ID_CFSSE            = 84,
  84        ATA_ID_CFS_ENABLE_1     = 85,
  85        ATA_ID_CFS_ENABLE_2     = 86,
  86        ATA_ID_CSF_DEFAULT      = 87,
  87        ATA_ID_UDMA_MODES       = 88,
  88        ATA_ID_HW_CONFIG        = 93,
  89        ATA_ID_SPG              = 98,
  90        ATA_ID_LBA_CAPACITY_2   = 100,
  91        ATA_ID_SECTOR_SIZE      = 106,
  92        ATA_ID_WWN              = 108,
  93        ATA_ID_LOGICAL_SECTOR_SIZE      = 117,  /* and 118 */
  94        ATA_ID_LAST_LUN         = 126,
  95        ATA_ID_DLF              = 128,
  96        ATA_ID_CSFO             = 129,
  97        ATA_ID_CFA_POWER        = 160,
  98        ATA_ID_CFA_KEY_MGMT     = 162,
  99        ATA_ID_CFA_MODES        = 163,
 100        ATA_ID_DATA_SET_MGMT    = 169,
 101        ATA_ID_ROT_SPEED        = 217,
 102        ATA_ID_PIO4             = (1 << 1),
 103
 104        ATA_ID_SERNO_LEN        = 20,
 105        ATA_ID_FW_REV_LEN       = 8,
 106        ATA_ID_PROD_LEN         = 40,
 107        ATA_ID_WWN_LEN          = 8,
 108
 109        ATA_PCI_CTL_OFS         = 2,
 110
 111        ATA_PIO0                = (1 << 0),
 112        ATA_PIO1                = ATA_PIO0 | (1 << 1),
 113        ATA_PIO2                = ATA_PIO1 | (1 << 2),
 114        ATA_PIO3                = ATA_PIO2 | (1 << 3),
 115        ATA_PIO4                = ATA_PIO3 | (1 << 4),
 116        ATA_PIO5                = ATA_PIO4 | (1 << 5),
 117        ATA_PIO6                = ATA_PIO5 | (1 << 6),
 118
 119        ATA_PIO4_ONLY           = (1 << 4),
 120
 121        ATA_SWDMA0              = (1 << 0),
 122        ATA_SWDMA1              = ATA_SWDMA0 | (1 << 1),
 123        ATA_SWDMA2              = ATA_SWDMA1 | (1 << 2),
 124
 125        ATA_SWDMA2_ONLY         = (1 << 2),
 126
 127        ATA_MWDMA0              = (1 << 0),
 128        ATA_MWDMA1              = ATA_MWDMA0 | (1 << 1),
 129        ATA_MWDMA2              = ATA_MWDMA1 | (1 << 2),
 130        ATA_MWDMA3              = ATA_MWDMA2 | (1 << 3),
 131        ATA_MWDMA4              = ATA_MWDMA3 | (1 << 4),
 132
 133        ATA_MWDMA12_ONLY        = (1 << 1) | (1 << 2),
 134        ATA_MWDMA2_ONLY         = (1 << 2),
 135
 136        ATA_UDMA0               = (1 << 0),
 137        ATA_UDMA1               = ATA_UDMA0 | (1 << 1),
 138        ATA_UDMA2               = ATA_UDMA1 | (1 << 2),
 139        ATA_UDMA3               = ATA_UDMA2 | (1 << 3),
 140        ATA_UDMA4               = ATA_UDMA3 | (1 << 4),
 141        ATA_UDMA5               = ATA_UDMA4 | (1 << 5),
 142        ATA_UDMA6               = ATA_UDMA5 | (1 << 6),
 143        ATA_UDMA7               = ATA_UDMA6 | (1 << 7),
 144        /* ATA_UDMA7 is just for completeness... doesn't exist (yet?).  */
 145
 146        ATA_UDMA24_ONLY         = (1 << 2) | (1 << 4),
 147
 148        ATA_UDMA_MASK_40C       = ATA_UDMA2,    /* udma0-2 */
 149
 150        /* DMA-related */
 151        ATA_PRD_SZ              = 8,
 152        ATA_PRD_TBL_SZ          = (ATA_MAX_PRD * ATA_PRD_SZ),
 153        ATA_PRD_EOT             = (1 << 31),    /* end-of-table flag */
 154
 155        ATA_DMA_TABLE_OFS       = 4,
 156        ATA_DMA_STATUS          = 2,
 157        ATA_DMA_CMD             = 0,
 158        ATA_DMA_WR              = (1 << 3),
 159        ATA_DMA_START           = (1 << 0),
 160        ATA_DMA_INTR            = (1 << 2),
 161        ATA_DMA_ERR             = (1 << 1),
 162        ATA_DMA_ACTIVE          = (1 << 0),
 163
 164        /* bits in ATA command block registers */
 165        ATA_HOB                 = (1 << 7),     /* LBA48 selector */
 166        ATA_NIEN                = (1 << 1),     /* disable-irq flag */
 167        ATA_LBA                 = (1 << 6),     /* LBA28 selector */
 168        ATA_DEV1                = (1 << 4),     /* Select Device 1 (slave) */
 169        ATA_DEVICE_OBS          = (1 << 7) | (1 << 5), /* obs bits in dev reg */
 170        ATA_DEVCTL_OBS          = (1 << 3),     /* obsolete bit in devctl reg */
 171        ATA_BUSY                = (1 << 7),     /* BSY status bit */
 172        ATA_DRDY                = (1 << 6),     /* device ready */
 173        ATA_DF                  = (1 << 5),     /* device fault */
 174        ATA_DSC                 = (1 << 4),     /* drive seek complete */
 175        ATA_DRQ                 = (1 << 3),     /* data request i/o */
 176        ATA_CORR                = (1 << 2),     /* corrected data error */
 177        ATA_IDX                 = (1 << 1),     /* index */
 178        ATA_ERR                 = (1 << 0),     /* have an error */
 179        ATA_SRST                = (1 << 2),     /* software reset */
 180        ATA_ICRC                = (1 << 7),     /* interface CRC error */
 181        ATA_BBK                 = ATA_ICRC,     /* pre-EIDE: block marked bad */
 182        ATA_UNC                 = (1 << 6),     /* uncorrectable media error */
 183        ATA_MC                  = (1 << 5),     /* media changed */
 184        ATA_IDNF                = (1 << 4),     /* ID not found */
 185        ATA_MCR                 = (1 << 3),     /* media change requested */
 186        ATA_ABORTED             = (1 << 2),     /* command aborted */
 187        ATA_TRK0NF              = (1 << 1),     /* track 0 not found */
 188        ATA_AMNF                = (1 << 0),     /* address mark not found */
 189        ATAPI_LFS               = 0xF0,         /* last failed sense */
 190        ATAPI_EOM               = ATA_TRK0NF,   /* end of media */
 191        ATAPI_ILI               = ATA_AMNF,     /* illegal length indication */
 192        ATAPI_IO                = (1 << 1),
 193        ATAPI_COD               = (1 << 0),
 194
 195        /* ATA command block registers */
 196        ATA_REG_DATA            = 0x00,
 197        ATA_REG_ERR             = 0x01,
 198        ATA_REG_NSECT           = 0x02,
 199        ATA_REG_LBAL            = 0x03,
 200        ATA_REG_LBAM            = 0x04,
 201        ATA_REG_LBAH            = 0x05,
 202        ATA_REG_DEVICE          = 0x06,
 203        ATA_REG_STATUS          = 0x07,
 204
 205        ATA_REG_FEATURE         = ATA_REG_ERR, /* and their aliases */
 206        ATA_REG_CMD             = ATA_REG_STATUS,
 207        ATA_REG_BYTEL           = ATA_REG_LBAM,
 208        ATA_REG_BYTEH           = ATA_REG_LBAH,
 209        ATA_REG_DEVSEL          = ATA_REG_DEVICE,
 210        ATA_REG_IRQ             = ATA_REG_NSECT,
 211
 212        /* ATA device commands */
 213        ATA_CMD_DEV_RESET       = 0x08, /* ATAPI device reset */
 214        ATA_CMD_CHK_POWER       = 0xE5, /* check power mode */
 215        ATA_CMD_STANDBY         = 0xE2, /* place in standby power mode */
 216        ATA_CMD_IDLE            = 0xE3, /* place in idle power mode */
 217        ATA_CMD_EDD             = 0x90, /* execute device diagnostic */
 218        ATA_CMD_DOWNLOAD_MICRO  = 0x92,
 219        ATA_CMD_NOP             = 0x00,
 220        ATA_CMD_FLUSH           = 0xE7,
 221        ATA_CMD_FLUSH_EXT       = 0xEA,
 222        ATA_CMD_ID_ATA          = 0xEC,
 223        ATA_CMD_ID_ATAPI        = 0xA1,
 224        ATA_CMD_SERVICE         = 0xA2,
 225        ATA_CMD_READ            = 0xC8,
 226        ATA_CMD_READ_EXT        = 0x25,
 227        ATA_CMD_READ_QUEUED     = 0x26,
 228        ATA_CMD_READ_STREAM_EXT = 0x2B,
 229        ATA_CMD_READ_STREAM_DMA_EXT = 0x2A,
 230        ATA_CMD_WRITE           = 0xCA,
 231        ATA_CMD_WRITE_EXT       = 0x35,
 232        ATA_CMD_WRITE_QUEUED    = 0x36,
 233        ATA_CMD_WRITE_STREAM_EXT = 0x3B,
 234        ATA_CMD_WRITE_STREAM_DMA_EXT = 0x3A,
 235        ATA_CMD_WRITE_FUA_EXT   = 0x3D,
 236        ATA_CMD_WRITE_QUEUED_FUA_EXT = 0x3E,
 237        ATA_CMD_FPDMA_READ      = 0x60,
 238        ATA_CMD_FPDMA_WRITE     = 0x61,
 239        ATA_CMD_PIO_READ        = 0x20,
 240        ATA_CMD_PIO_READ_EXT    = 0x24,
 241        ATA_CMD_PIO_WRITE       = 0x30,
 242        ATA_CMD_PIO_WRITE_EXT   = 0x34,
 243        ATA_CMD_READ_MULTI      = 0xC4,
 244        ATA_CMD_READ_MULTI_EXT  = 0x29,
 245        ATA_CMD_WRITE_MULTI     = 0xC5,
 246        ATA_CMD_WRITE_MULTI_EXT = 0x39,
 247        ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
 248        ATA_CMD_SET_FEATURES    = 0xEF,
 249        ATA_CMD_SET_MULTI       = 0xC6,
 250        ATA_CMD_PACKET          = 0xA0,
 251        ATA_CMD_VERIFY          = 0x40,
 252        ATA_CMD_VERIFY_EXT      = 0x42,
 253        ATA_CMD_WRITE_UNCORR_EXT = 0x45,
 254        ATA_CMD_STANDBYNOW1     = 0xE0,
 255        ATA_CMD_IDLEIMMEDIATE   = 0xE1,
 256        ATA_CMD_SLEEP           = 0xE6,
 257        ATA_CMD_INIT_DEV_PARAMS = 0x91,
 258        ATA_CMD_READ_NATIVE_MAX = 0xF8,
 259        ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
 260        ATA_CMD_SET_MAX         = 0xF9,
 261        ATA_CMD_SET_MAX_EXT     = 0x37,
 262        ATA_CMD_READ_LOG_EXT    = 0x2F,
 263        ATA_CMD_WRITE_LOG_EXT   = 0x3F,
 264        ATA_CMD_READ_LOG_DMA_EXT = 0x47,
 265        ATA_CMD_WRITE_LOG_DMA_EXT = 0x57,
 266        ATA_CMD_TRUSTED_RCV     = 0x5C,
 267        ATA_CMD_TRUSTED_RCV_DMA = 0x5D,
 268        ATA_CMD_TRUSTED_SND     = 0x5E,
 269        ATA_CMD_TRUSTED_SND_DMA = 0x5F,
 270        ATA_CMD_PMP_READ        = 0xE4,
 271        ATA_CMD_PMP_WRITE       = 0xE8,
 272        ATA_CMD_CONF_OVERLAY    = 0xB1,
 273        ATA_CMD_SEC_SET_PASS    = 0xF1,
 274        ATA_CMD_SEC_UNLOCK      = 0xF2,
 275        ATA_CMD_SEC_ERASE_PREP  = 0xF3,
 276        ATA_CMD_SEC_ERASE_UNIT  = 0xF4,
 277        ATA_CMD_SEC_FREEZE_LOCK = 0xF5,
 278        ATA_CMD_SEC_DISABLE_PASS = 0xF6,
 279        ATA_CMD_CONFIG_STREAM   = 0x51,
 280        ATA_CMD_SMART           = 0xB0,
 281        ATA_CMD_MEDIA_LOCK      = 0xDE,
 282        ATA_CMD_MEDIA_UNLOCK    = 0xDF,
 283        ATA_CMD_DSM             = 0x06,
 284        ATA_CMD_CHK_MED_CRD_TYP = 0xD1,
 285        ATA_CMD_CFA_REQ_EXT_ERR = 0x03,
 286        ATA_CMD_CFA_WRITE_NE    = 0x38,
 287        ATA_CMD_CFA_TRANS_SECT  = 0x87,
 288        ATA_CMD_CFA_ERASE       = 0xC0,
 289        ATA_CMD_CFA_WRITE_MULT_NE = 0xCD,
 290        /* marked obsolete in the ATA/ATAPI-7 spec */
 291        ATA_CMD_RESTORE         = 0x10,
 292
 293        /* READ_LOG_EXT pages */
 294        ATA_LOG_SATA_NCQ        = 0x10,
 295
 296        /* READ/WRITE LONG (obsolete) */
 297        ATA_CMD_READ_LONG       = 0x22,
 298        ATA_CMD_READ_LONG_ONCE  = 0x23,
 299        ATA_CMD_WRITE_LONG      = 0x32,
 300        ATA_CMD_WRITE_LONG_ONCE = 0x33,
 301
 302        /* SETFEATURES stuff */
 303        SETFEATURES_XFER        = 0x03,
 304        XFER_UDMA_7             = 0x47,
 305        XFER_UDMA_6             = 0x46,
 306        XFER_UDMA_5             = 0x45,
 307        XFER_UDMA_4             = 0x44,
 308        XFER_UDMA_3             = 0x43,
 309        XFER_UDMA_2             = 0x42,
 310        XFER_UDMA_1             = 0x41,
 311        XFER_UDMA_0             = 0x40,
 312        XFER_MW_DMA_4           = 0x24, /* CFA only */
 313        XFER_MW_DMA_3           = 0x23, /* CFA only */
 314        XFER_MW_DMA_2           = 0x22,
 315        XFER_MW_DMA_1           = 0x21,
 316        XFER_MW_DMA_0           = 0x20,
 317        XFER_SW_DMA_2           = 0x12,
 318        XFER_SW_DMA_1           = 0x11,
 319        XFER_SW_DMA_0           = 0x10,
 320        XFER_PIO_6              = 0x0E, /* CFA only */
 321        XFER_PIO_5              = 0x0D, /* CFA only */
 322        XFER_PIO_4              = 0x0C,
 323        XFER_PIO_3              = 0x0B,
 324        XFER_PIO_2              = 0x0A,
 325        XFER_PIO_1              = 0x09,
 326        XFER_PIO_0              = 0x08,
 327        XFER_PIO_SLOW           = 0x00,
 328
 329        SETFEATURES_WC_ON       = 0x02, /* Enable write cache */
 330        SETFEATURES_WC_OFF      = 0x82, /* Disable write cache */
 331
 332        /* Enable/Disable Automatic Acoustic Management */
 333        SETFEATURES_AAM_ON      = 0x42,
 334        SETFEATURES_AAM_OFF     = 0xC2,
 335
 336        SETFEATURES_SPINUP      = 0x07, /* Spin-up drive */
 337
 338        SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
 339        SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
 340
 341        /* SETFEATURE Sector counts for SATA features */
 342        SATA_FPDMA_OFFSET       = 0x01, /* FPDMA non-zero buffer offsets */
 343        SATA_FPDMA_AA           = 0x02, /* FPDMA Setup FIS Auto-Activate */
 344        SATA_DIPM               = 0x03, /* Device Initiated Power Management */
 345        SATA_FPDMA_IN_ORDER     = 0x04, /* FPDMA in-order data delivery */
 346        SATA_AN                 = 0x05, /* Asynchronous Notification */
 347        SATA_SSP                = 0x06, /* Software Settings Preservation */
 348
 349        /* feature values for SET_MAX */
 350        ATA_SET_MAX_ADDR        = 0x00,
 351        ATA_SET_MAX_PASSWD      = 0x01,
 352        ATA_SET_MAX_LOCK        = 0x02,
 353        ATA_SET_MAX_UNLOCK      = 0x03,
 354        ATA_SET_MAX_FREEZE_LOCK = 0x04,
 355
 356        /* feature values for DEVICE CONFIGURATION OVERLAY */
 357        ATA_DCO_RESTORE         = 0xC0,
 358        ATA_DCO_FREEZE_LOCK     = 0xC1,
 359        ATA_DCO_IDENTIFY        = 0xC2,
 360        ATA_DCO_SET             = 0xC3,
 361
 362        /* feature values for SMART */
 363        ATA_SMART_ENABLE        = 0xD8,
 364        ATA_SMART_READ_VALUES   = 0xD0,
 365        ATA_SMART_READ_THRESHOLDS = 0xD1,
 366
 367        /* feature values for Data Set Management */
 368        ATA_DSM_TRIM            = 0x01,
 369
 370        /* password used in LBA Mid / LBA High for executing SMART commands */
 371        ATA_SMART_LBAM_PASS     = 0x4F,
 372        ATA_SMART_LBAH_PASS     = 0xC2,
 373
 374        /* ATAPI stuff */
 375        ATAPI_PKT_DMA           = (1 << 0),
 376        ATAPI_DMADIR            = (1 << 2),     /* ATAPI data dir:
 377                                                   0=to device, 1=to host */
 378        ATAPI_CDB_LEN           = 16,
 379
 380        /* PMP stuff */
 381        SATA_PMP_MAX_PORTS      = 15,
 382        SATA_PMP_CTRL_PORT      = 15,
 383
 384        SATA_PMP_GSCR_DWORDS    = 128,
 385        SATA_PMP_GSCR_PROD_ID   = 0,
 386        SATA_PMP_GSCR_REV       = 1,
 387        SATA_PMP_GSCR_PORT_INFO = 2,
 388        SATA_PMP_GSCR_ERROR     = 32,
 389        SATA_PMP_GSCR_ERROR_EN  = 33,
 390        SATA_PMP_GSCR_FEAT      = 64,
 391        SATA_PMP_GSCR_FEAT_EN   = 96,
 392
 393        SATA_PMP_PSCR_STATUS    = 0,
 394        SATA_PMP_PSCR_ERROR     = 1,
 395        SATA_PMP_PSCR_CONTROL   = 2,
 396
 397        SATA_PMP_FEAT_BIST      = (1 << 0),
 398        SATA_PMP_FEAT_PMREQ     = (1 << 1),
 399        SATA_PMP_FEAT_DYNSSC    = (1 << 2),
 400        SATA_PMP_FEAT_NOTIFY    = (1 << 3),
 401
 402        /* cable types */
 403        ATA_CBL_NONE            = 0,
 404        ATA_CBL_PATA40          = 1,
 405        ATA_CBL_PATA80          = 2,
 406        ATA_CBL_PATA40_SHORT    = 3,    /* 40 wire cable to high UDMA spec */
 407        ATA_CBL_PATA_UNK        = 4,    /* don't know, maybe 80c? */
 408        ATA_CBL_PATA_IGN        = 5,    /* don't know, ignore cable handling */
 409        ATA_CBL_SATA            = 6,
 410
 411        /* SATA Status and Control Registers */
 412        SCR_STATUS              = 0,
 413        SCR_ERROR               = 1,
 414        SCR_CONTROL             = 2,
 415        SCR_ACTIVE              = 3,
 416        SCR_NOTIFICATION        = 4,
 417
 418        /* SError bits */
 419        SERR_DATA_RECOVERED     = (1 << 0), /* recovered data error */
 420        SERR_COMM_RECOVERED     = (1 << 1), /* recovered comm failure */
 421        SERR_DATA               = (1 << 8), /* unrecovered data error */
 422        SERR_PERSISTENT         = (1 << 9), /* persistent data/comm error */
 423        SERR_PROTOCOL           = (1 << 10), /* protocol violation */
 424        SERR_INTERNAL           = (1 << 11), /* host internal error */
 425        SERR_PHYRDY_CHG         = (1 << 16), /* PHY RDY changed */
 426        SERR_PHY_INT_ERR        = (1 << 17), /* PHY internal error */
 427        SERR_COMM_WAKE          = (1 << 18), /* Comm wake */
 428        SERR_10B_8B_ERR         = (1 << 19), /* 10b to 8b decode error */
 429        SERR_DISPARITY          = (1 << 20), /* Disparity */
 430        SERR_CRC                = (1 << 21), /* CRC error */
 431        SERR_HANDSHAKE          = (1 << 22), /* Handshake error */
 432        SERR_LINK_SEQ_ERR       = (1 << 23), /* Link sequence error */
 433        SERR_TRANS_ST_ERROR     = (1 << 24), /* Transport state trans. error */
 434        SERR_UNRECOG_FIS        = (1 << 25), /* Unrecognized FIS */
 435        SERR_DEV_XCHG           = (1 << 26), /* device exchanged */
 436
 437        /* struct ata_taskfile flags */
 438        ATA_TFLAG_LBA48         = (1 << 0), /* enable 48-bit LBA and "HOB" */
 439        ATA_TFLAG_ISADDR        = (1 << 1), /* enable r/w to nsect/lba regs */
 440        ATA_TFLAG_DEVICE        = (1 << 2), /* enable r/w to device reg */
 441        ATA_TFLAG_WRITE         = (1 << 3), /* data dir: host->dev==1 (write) */
 442        ATA_TFLAG_LBA           = (1 << 4), /* enable LBA */
 443        ATA_TFLAG_FUA           = (1 << 5), /* enable FUA */
 444        ATA_TFLAG_POLLING       = (1 << 6), /* set nIEN to 1 and use polling */
 445
 446        /* protocol flags */
 447        ATA_PROT_FLAG_PIO       = (1 << 0), /* is PIO */
 448        ATA_PROT_FLAG_DMA       = (1 << 1), /* is DMA */
 449        ATA_PROT_FLAG_DATA      = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA,
 450        ATA_PROT_FLAG_NCQ       = (1 << 2), /* is NCQ */
 451        ATA_PROT_FLAG_ATAPI     = (1 << 3), /* is ATAPI */
 452};
 453
 454enum ata_tf_protocols {
 455        /* ATA taskfile protocols */
 456        ATA_PROT_UNKNOWN,       /* unknown/invalid */
 457        ATA_PROT_NODATA,        /* no data */
 458        ATA_PROT_PIO,           /* PIO data xfer */
 459        ATA_PROT_DMA,           /* DMA */
 460        ATA_PROT_NCQ,           /* NCQ */
 461        ATAPI_PROT_NODATA,      /* packet command, no data */
 462        ATAPI_PROT_PIO,         /* packet command, PIO data xfer*/
 463        ATAPI_PROT_DMA,         /* packet command with special DMA sauce */
 464};
 465
 466enum ata_ioctls {
 467        ATA_IOC_GET_IO32        = 0x309,
 468        ATA_IOC_SET_IO32        = 0x324,
 469};
 470
 471/* core structures */
 472
 473struct ata_bmdma_prd {
 474        __le32                  addr;
 475        __le32                  flags_len;
 476};
 477
 478struct ata_taskfile {
 479        unsigned long           flags;          /* ATA_TFLAG_xxx */
 480        u8                      protocol;       /* ATA_PROT_xxx */
 481
 482        u8                      ctl;            /* control reg */
 483
 484        u8                      hob_feature;    /* additional data */
 485        u8                      hob_nsect;      /* to support LBA48 */
 486        u8                      hob_lbal;
 487        u8                      hob_lbam;
 488        u8                      hob_lbah;
 489
 490        u8                      feature;
 491        u8                      nsect;
 492        u8                      lbal;
 493        u8                      lbam;
 494        u8                      lbah;
 495
 496        u8                      device;
 497
 498        u8                      command;        /* IO operation */
 499};
 500
 501/*
 502 * protocol tests
 503 */
 504static inline unsigned int ata_prot_flags(u8 prot)
 505{
 506        switch (prot) {
 507        case ATA_PROT_NODATA:
 508                return 0;
 509        case ATA_PROT_PIO:
 510                return ATA_PROT_FLAG_PIO;
 511        case ATA_PROT_DMA:
 512                return ATA_PROT_FLAG_DMA;
 513        case ATA_PROT_NCQ:
 514                return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
 515        case ATAPI_PROT_NODATA:
 516                return ATA_PROT_FLAG_ATAPI;
 517        case ATAPI_PROT_PIO:
 518                return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO;
 519        case ATAPI_PROT_DMA:
 520                return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA;
 521        }
 522        return 0;
 523}
 524
 525static inline int ata_is_atapi(u8 prot)
 526{
 527        return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI;
 528}
 529
 530static inline int ata_is_nodata(u8 prot)
 531{
 532        return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA);
 533}
 534
 535static inline int ata_is_pio(u8 prot)
 536{
 537        return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;
 538}
 539
 540static inline int ata_is_dma(u8 prot)
 541{
 542        return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA;
 543}
 544
 545static inline int ata_is_ncq(u8 prot)
 546{
 547        return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ;
 548}
 549
 550static inline int ata_is_data(u8 prot)
 551{
 552        return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA;
 553}
 554
 555/*
 556 * id tests
 557 */
 558#define ata_id_is_ata(id)       (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0)
 559#define ata_id_has_lba(id)      ((id)[ATA_ID_CAPABILITY] & (1 << 9))
 560#define ata_id_has_dma(id)      ((id)[ATA_ID_CAPABILITY] & (1 << 8))
 561#define ata_id_has_ncq(id)      ((id)[76] & (1 << 8))
 562#define ata_id_queue_depth(id)  (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1)
 563#define ata_id_removeable(id)   ((id)[ATA_ID_CONFIG] & (1 << 7))
 564#define ata_id_has_atapi_AN(id) \
 565        ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \
 566          ((id)[78] & (1 << 5)) )
 567#define ata_id_has_fpdma_aa(id) \
 568        ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \
 569          ((id)[78] & (1 << 2)) )
 570#define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10))
 571#define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11))
 572#define ata_id_u32(id,n)        \
 573        (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
 574#define ata_id_u64(id,n)        \
 575        ( ((u64) (id)[(n) + 3] << 48) | \
 576          ((u64) (id)[(n) + 2] << 32) | \
 577          ((u64) (id)[(n) + 1] << 16) | \
 578          ((u64) (id)[(n) + 0]) )
 579
 580#define ata_id_cdb_intr(id)     (((id)[ATA_ID_CONFIG] & 0x60) == 0x20)
 581#define ata_id_has_da(id)       ((id)[77] & (1 << 4))
 582
 583static inline bool ata_id_has_hipm(const u16 *id)
 584{
 585        u16 val = id[76];
 586
 587        if (val == 0 || val == 0xffff)
 588                return false;
 589
 590        return val & (1 << 9);
 591}
 592
 593static inline bool ata_id_has_dipm(const u16 *id)
 594{
 595        u16 val = id[78];
 596
 597        if (val == 0 || val == 0xffff)
 598                return false;
 599
 600        return val & (1 << 3);
 601}
 602
 603
 604static inline bool ata_id_has_fua(const u16 *id)
 605{
 606        if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000)
 607                return false;
 608        return id[ATA_ID_CFSSE] & (1 << 6);
 609}
 610
 611static inline bool ata_id_has_flush(const u16 *id)
 612{
 613        if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
 614                return false;
 615        return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
 616}
 617
 618static inline bool ata_id_flush_enabled(const u16 *id)
 619{
 620        if (ata_id_has_flush(id) == 0)
 621                return false;
 622        if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
 623                return false;
 624        return id[ATA_ID_CFS_ENABLE_2] & (1 << 12);
 625}
 626
 627static inline bool ata_id_has_flush_ext(const u16 *id)
 628{
 629        if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
 630                return false;
 631        return id[ATA_ID_COMMAND_SET_2] & (1 << 13);
 632}
 633
 634static inline bool ata_id_flush_ext_enabled(const u16 *id)
 635{
 636        if (ata_id_has_flush_ext(id) == 0)
 637                return false;
 638        if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
 639                return false;
 640        /*
 641         * some Maxtor disks have bit 13 defined incorrectly
 642         * so check bit 10 too
 643         */
 644        return (id[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400;
 645}
 646
 647static inline u32 ata_id_logical_sector_size(const u16 *id)
 648{
 649        /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128.
 650         * IDENTIFY DEVICE data, word 117-118.
 651         * 0xd000 ignores bit 13 (logical:physical > 1)
 652         */
 653        if ((id[ATA_ID_SECTOR_SIZE] & 0xd000) == 0x5000)
 654                return (((id[ATA_ID_LOGICAL_SECTOR_SIZE+1] << 16)
 655                         + id[ATA_ID_LOGICAL_SECTOR_SIZE]) * sizeof(u16)) ;
 656        return ATA_SECT_SIZE;
 657}
 658
 659static inline u8 ata_id_log2_per_physical_sector(const u16 *id)
 660{
 661        /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128.
 662         * IDENTIFY DEVICE data, word 106.
 663         * 0xe000 ignores bit 12 (logical sector > 512 bytes)
 664         */
 665        if ((id[ATA_ID_SECTOR_SIZE] & 0xe000) == 0x6000)
 666                return (id[ATA_ID_SECTOR_SIZE] & 0xf);
 667        return 0;
 668}
 669
 670/* Offset of logical sectors relative to physical sectors.
 671 *
 672 * If device has more than one logical sector per physical sector
 673 * (aka 512 byte emulation), vendors might offset the "sector 0" address
 674 * so sector 63 is "naturally aligned" - e.g. FAT partition table.
 675 * This avoids Read/Mod/Write penalties when using FAT partition table
 676 * and updating "well aligned" (FS perspective) physical sectors on every
 677 * transaction.
 678 */
 679static inline u16 ata_id_logical_sector_offset(const u16 *id,
 680         u8 log2_per_phys)
 681{
 682        u16 word_209 = id[209];
 683
 684        if ((log2_per_phys > 1) && (word_209 & 0xc000) == 0x4000) {
 685                u16 first = word_209 & 0x3fff;
 686                if (first > 0)
 687                        return (1 << log2_per_phys) - first;
 688        }
 689        return 0;
 690}
 691
 692static inline bool ata_id_has_lba48(const u16 *id)
 693{
 694        if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
 695                return false;
 696        if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2))
 697                return false;
 698        return id[ATA_ID_COMMAND_SET_2] & (1 << 10);
 699}
 700
 701static inline bool ata_id_lba48_enabled(const u16 *id)
 702{
 703        if (ata_id_has_lba48(id) == 0)
 704                return false;
 705        if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
 706                return false;
 707        return id[ATA_ID_CFS_ENABLE_2] & (1 << 10);
 708}
 709
 710static inline bool ata_id_hpa_enabled(const u16 *id)
 711{
 712        /* Yes children, word 83 valid bits cover word 82 data */
 713        if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
 714                return false;
 715        /* And 87 covers 85-87 */
 716        if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
 717                return false;
 718        /* Check command sets enabled as well as supported */
 719        if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0)
 720                return false;
 721        return id[ATA_ID_COMMAND_SET_1] & (1 << 10);
 722}
 723
 724static inline bool ata_id_has_wcache(const u16 *id)
 725{
 726        /* Yes children, word 83 valid bits cover word 82 data */
 727        if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
 728                return false;
 729        return id[ATA_ID_COMMAND_SET_1] & (1 << 5);
 730}
 731
 732static inline bool ata_id_has_pm(const u16 *id)
 733{
 734        if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
 735                return false;
 736        return id[ATA_ID_COMMAND_SET_1] & (1 << 3);
 737}
 738
 739static inline bool ata_id_rahead_enabled(const u16 *id)
 740{
 741        if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
 742                return false;
 743        return id[ATA_ID_CFS_ENABLE_1] & (1 << 6);
 744}
 745
 746static inline bool ata_id_wcache_enabled(const u16 *id)
 747{
 748        if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
 749                return false;
 750        return id[ATA_ID_CFS_ENABLE_1] & (1 << 5);
 751}
 752
 753/**
 754 *      ata_id_major_version    -       get ATA level of drive
 755 *      @id: Identify data
 756 *
 757 *      Caveats:
 758 *              ATA-1 considers identify optional
 759 *              ATA-2 introduces mandatory identify
 760 *              ATA-3 introduces word 80 and accurate reporting
 761 *
 762 *      The practical impact of this is that ata_id_major_version cannot
 763 *      reliably report on drives below ATA3.
 764 */
 765
 766static inline unsigned int ata_id_major_version(const u16 *id)
 767{
 768        unsigned int mver;
 769
 770        if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
 771                return 0;
 772
 773        for (mver = 14; mver >= 1; mver--)
 774                if (id[ATA_ID_MAJOR_VER] & (1 << mver))
 775                        break;
 776        return mver;
 777}
 778
 779static inline bool ata_id_is_sata(const u16 *id)
 780{
 781        /*
 782         * See if word 93 is 0 AND drive is at least ATA-5 compatible
 783         * verifying that word 80 by casting it to a signed type --
 784         * this trick allows us to filter out the reserved values of
 785         * 0x0000 and 0xffff along with the earlier ATA revisions...
 786         */
 787        if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020)
 788                return true;
 789        return false;
 790}
 791
 792static inline bool ata_id_has_tpm(const u16 *id)
 793{
 794        /* The TPM bits are only valid on ATA8 */
 795        if (ata_id_major_version(id) < 8)
 796                return false;
 797        if ((id[48] & 0xC000) != 0x4000)
 798                return false;
 799        return id[48] & (1 << 0);
 800}
 801
 802static inline bool ata_id_has_dword_io(const u16 *id)
 803{
 804        /* ATA 8 reuses this flag for "trusted" computing */
 805        if (ata_id_major_version(id) > 7)
 806                return false;
 807        return id[ATA_ID_DWORD_IO] & (1 << 0);
 808}
 809
 810static inline bool ata_id_has_unload(const u16 *id)
 811{
 812        if (ata_id_major_version(id) >= 7 &&
 813            (id[ATA_ID_CFSSE] & 0xC000) == 0x4000 &&
 814            id[ATA_ID_CFSSE] & (1 << 13))
 815                return true;
 816        return false;
 817}
 818
 819static inline bool ata_id_has_wwn(const u16 *id)
 820{
 821        return (id[ATA_ID_CSF_DEFAULT] & 0xC100) == 0x4100;
 822}
 823
 824static inline int ata_id_form_factor(const u16 *id)
 825{
 826        u16 val = id[168];
 827
 828        if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
 829                return 0;
 830
 831        val &= 0xf;
 832
 833        if (val > 5)
 834                return 0;
 835
 836        return val;
 837}
 838
 839static inline int ata_id_rotation_rate(const u16 *id)
 840{
 841        u16 val = id[217];
 842
 843        if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
 844                return 0;
 845
 846        if (val > 1 && val < 0x401)
 847                return 0;
 848
 849        return val;
 850}
 851
 852static inline bool ata_id_has_trim(const u16 *id)
 853{
 854        if (ata_id_major_version(id) >= 7 &&
 855            (id[ATA_ID_DATA_SET_MGMT] & 1))
 856                return true;
 857        return false;
 858}
 859
 860static inline bool ata_id_has_zero_after_trim(const u16 *id)
 861{
 862        /* DSM supported, deterministic read, and read zero after trim set */
 863        if (ata_id_has_trim(id) &&
 864            (id[ATA_ID_ADDITIONAL_SUPP] & 0x4020) == 0x4020)
 865                return true;
 866
 867        return false;
 868}
 869
 870static inline bool ata_id_current_chs_valid(const u16 *id)
 871{
 872        /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
 873           has not been issued to the device then the values of
 874           id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */
 875        return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */
 876                id[ATA_ID_CUR_CYLS] &&  /* cylinders in current translation */
 877                id[ATA_ID_CUR_HEADS] &&  /* heads in current translation */
 878                id[ATA_ID_CUR_HEADS] <= 16 &&
 879                id[ATA_ID_CUR_SECTORS];    /* sectors in current translation */
 880}
 881
 882static inline bool ata_id_is_cfa(const u16 *id)
 883{
 884        if ((id[ATA_ID_CONFIG] == 0x848A) ||    /* Traditional CF */
 885            (id[ATA_ID_CONFIG] == 0x844A))      /* Delkin Devices CF */
 886                return true;
 887        /*
 888         * CF specs don't require specific value in the word 0 anymore and yet
 889         * they forbid to report the ATA version in the word 80 and require the
 890         * CFA feature set support to be indicated in the word 83 in this case.
 891         * Unfortunately, some cards only follow either of this requirements,
 892         * and while those that don't indicate CFA feature support need some
 893         * sort of quirk list, it seems impractical for the ones that do...
 894         */
 895        return (id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004;
 896}
 897
 898static inline bool ata_id_is_ssd(const u16 *id)
 899{
 900        return id[ATA_ID_ROT_SPEED] == 0x01;
 901}
 902
 903static inline bool ata_id_pio_need_iordy(const u16 *id, const u8 pio)
 904{
 905        /* CF spec. r4.1 Table 22 says no IORDY on PIO5 and PIO6. */
 906        if (pio > 4 && ata_id_is_cfa(id))
 907                return false;
 908        /* For PIO3 and higher it is mandatory. */
 909        if (pio > 2)
 910                return true;
 911        /* Turn it on when possible. */
 912        return ata_id_has_iordy(id);
 913}
 914
 915static inline bool ata_drive_40wire(const u16 *dev_id)
 916{
 917        if (ata_id_is_sata(dev_id))
 918                return false;   /* SATA */
 919        if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000)
 920                return false;   /* 80 wire */
 921        return true;
 922}
 923
 924static inline bool ata_drive_40wire_relaxed(const u16 *dev_id)
 925{
 926        if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000)
 927                return false;   /* 80 wire */
 928        return true;
 929}
 930
 931static inline int atapi_cdb_len(const u16 *dev_id)
 932{
 933        u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3;
 934        switch (tmp) {
 935        case 0:         return 12;
 936        case 1:         return 16;
 937        default:        return -1;
 938        }
 939}
 940
 941static inline bool atapi_command_packet_set(const u16 *dev_id)
 942{
 943        return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f;
 944}
 945
 946static inline bool atapi_id_dmadir(const u16 *dev_id)
 947{
 948        return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
 949}
 950
 951/*
 952 * ata_id_is_lba_capacity_ok() performs a sanity check on
 953 * the claimed LBA capacity value for the device.
 954 *
 955 * Returns 1 if LBA capacity looks sensible, 0 otherwise.
 956 *
 957 * It is called only once for each device.
 958 */
 959static inline bool ata_id_is_lba_capacity_ok(u16 *id)
 960{
 961        unsigned long lba_sects, chs_sects, head, tail;
 962
 963        /* No non-LBA info .. so valid! */
 964        if (id[ATA_ID_CYLS] == 0)
 965                return true;
 966
 967        lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
 968
 969        /*
 970         * The ATA spec tells large drives to return
 971         * C/H/S = 16383/16/63 independent of their size.
 972         * Some drives can be jumpered to use 15 heads instead of 16.
 973         * Some drives can be jumpered to use 4092 cyls instead of 16383.
 974         */
 975        if ((id[ATA_ID_CYLS] == 16383 ||
 976             (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) &&
 977            id[ATA_ID_SECTORS] == 63 &&
 978            (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) &&
 979            (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS]))
 980                return true;
 981
 982        chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS];
 983
 984        /* perform a rough sanity check on lba_sects: within 10% is OK */
 985        if (lba_sects - chs_sects < chs_sects/10)
 986                return true;
 987
 988        /* some drives have the word order reversed */
 989        head = (lba_sects >> 16) & 0xffff;
 990        tail = lba_sects & 0xffff;
 991        lba_sects = head | (tail << 16);
 992
 993        if (lba_sects - chs_sects < chs_sects/10) {
 994                *(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects);
 995                return true;    /* LBA capacity is (now) good */
 996        }
 997
 998        return false;   /* LBA capacity value may be bad */
 999}
1000
1001static inline void ata_id_to_hd_driveid(u16 *id)
1002{
1003#ifdef __BIG_ENDIAN
1004        /* accessed in struct hd_driveid as 8-bit values */
1005        id[ATA_ID_MAX_MULTSECT]  = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]);
1006        id[ATA_ID_CAPABILITY]    = __cpu_to_le16(id[ATA_ID_CAPABILITY]);
1007        id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]);
1008        id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]);
1009        id[ATA_ID_MULTSECT]      = __cpu_to_le16(id[ATA_ID_MULTSECT]);
1010
1011        /* as 32-bit values */
1012        *(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
1013        *(u32 *)&id[ATA_ID_SPG]          = ata_id_u32(id, ATA_ID_SPG);
1014
1015        /* as 64-bit value */
1016        *(u64 *)&id[ATA_ID_LBA_CAPACITY_2] =
1017                ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
1018#endif
1019}
1020
1021/*
1022 * Write LBA Range Entries to the buffer that will cover the extent from
1023 * sector to sector + count.  This is used for TRIM and for ADD LBA(S)
1024 * TO NV CACHE PINNED SET.
1025 */
1026static inline unsigned ata_set_lba_range_entries(void *_buffer,
1027                unsigned buf_size, u64 sector, unsigned long count)
1028{
1029        __le64 *buffer = _buffer;
1030        unsigned i = 0, used_bytes;
1031
1032        while (i < buf_size / 8 ) { /* 6-byte LBA + 2-byte range per entry */
1033                u64 entry = sector |
1034                        ((u64)(count > 0xffff ? 0xffff : count) << 48);
1035                buffer[i++] = __cpu_to_le64(entry);
1036                if (count <= 0xffff)
1037                        break;
1038                count -= 0xffff;
1039                sector += 0xffff;
1040        }
1041
1042        used_bytes = ALIGN(i * 8, 512);
1043        memset(buffer + i, 0, used_bytes - i * 8);
1044        return used_bytes;
1045}
1046
1047static inline int is_multi_taskfile(struct ata_taskfile *tf)
1048{
1049        return (tf->command == ATA_CMD_READ_MULTI) ||
1050               (tf->command == ATA_CMD_WRITE_MULTI) ||
1051               (tf->command == ATA_CMD_READ_MULTI_EXT) ||
1052               (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
1053               (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
1054}
1055
1056static inline bool ata_ok(u8 status)
1057{
1058        return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
1059                        == ATA_DRDY);
1060}
1061
1062static inline bool lba_28_ok(u64 block, u32 n_block)
1063{
1064        /* check the ending block number: must be LESS THAN 0x0fffffff */
1065        return ((block + n_block) < ((1 << 28) - 1)) && (n_block <= 256);
1066}
1067
1068static inline bool lba_48_ok(u64 block, u32 n_block)
1069{
1070        /* check the ending block number */
1071        return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
1072}
1073
1074#define sata_pmp_gscr_vendor(gscr)      ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
1075#define sata_pmp_gscr_devid(gscr)       ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
1076#define sata_pmp_gscr_rev(gscr)         (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
1077#define sata_pmp_gscr_ports(gscr)       ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
1078
1079#endif /* __LINUX_ATA_H__ */
1080
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