include/linux/ata.h

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
ata_id_has_hipm
ata_id_has_dipm
ata_id_has_fua
ata_id_has_flush
ata_id_flush_enabled
ata_id_has_flush_ext
ata_id_flush_ext_enabled
ata_id_logical_sector_size
ata_id_log2_per_physical_sector
ata_id_logical_sector_offset
ata_id_has_lba48
ata_id_lba48_enabled
ata_id_hpa_enabled
ata_id_has_wcache
ata_id_has_pm
ata_id_rahead_enabled
ata_id_wcache_enabled
ata_id_has_read_log_dma_ext
ata_id_has_sense_reporting
ata_id_sense_reporting_enabled
ata_id_sct_data_tables
ata_id_sct_features_ctrl
ata_id_sct_error_recovery_ctrl
ata_id_sct_long_sector_access
ata_id_sct_supported
ata_id_major_version
ata_id_is_sata
ata_id_has_tpm
ata_id_has_dword_io
ata_id_has_trusted
ata_id_has_unload
ata_id_has_wwn
ata_id_form_factor
ata_id_rotation_rate
ata_id_has_ncq_send_and_recv
ata_id_has_ncq_non_data
ata_id_has_ncq_prio
ata_id_has_trim
ata_id_has_zero_after_trim
ata_id_current_chs_valid
ata_id_is_cfa
ata_id_is_ssd
ata_id_zoned_cap
ata_id_pio_need_iordy
ata_drive_40wire
ata_drive_40wire_relaxed
atapi_cdb_len
atapi_command_packet_set
atapi_id_dmadir
ata_id_is_lba_capacity_ok
ata_id_to_hd_driveid
ata_ok
lba_28_ok
lba_48_ok
   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 
   3 /*
   4  *  Copyright 2003-2004 Red Hat, Inc.  All rights reserved.
   5  *  Copyright 2003-2004 Jeff Garzik
   6  *
   7  *  libata documentation is available via 'make {ps|pdf}docs',
   8  *  as Documentation/driver-api/libata.rst
   9  *
  10  *  Hardware documentation available from http://www.t13.org/
  11  */
  12 
  13 #ifndef __LINUX_ATA_H__
  14 #define __LINUX_ATA_H__
  15 
  16 #include <linux/kernel.h>
  17 #include <linux/string.h>
  18 #include <linux/types.h>
  19 #include <asm/byteorder.h>
  20 
  21 /* defines only for the constants which don't work well as enums */
  22 #define ATA_DMA_BOUNDARY        0xffffUL
  23 #define ATA_DMA_MASK            0xffffffffULL
  24 
  25 enum {
  26         /* various global constants */
  27         ATA_MAX_DEVICES         = 2,    /* per bus/port */
  28         ATA_MAX_PRD             = 256,  /* we could make these 256/256 */
  29         ATA_SECT_SIZE           = 512,
  30         ATA_MAX_SECTORS_128     = 128,
  31         ATA_MAX_SECTORS         = 256,
  32         ATA_MAX_SECTORS_1024    = 1024,
  33         ATA_MAX_SECTORS_LBA48   = 65535,/* avoid count to be 0000h */
  34         ATA_MAX_SECTORS_TAPE    = 65535,
  35         ATA_MAX_TRIM_RNUM       = 64,   /* 512-byte payload / (6-byte LBA + 2-byte range per entry) */
  36 
  37         ATA_ID_WORDS            = 256,
  38         ATA_ID_CONFIG           = 0,
  39         ATA_ID_CYLS             = 1,
  40         ATA_ID_HEADS            = 3,
  41         ATA_ID_SECTORS          = 6,
  42         ATA_ID_SERNO            = 10,
  43         ATA_ID_BUF_SIZE         = 21,
  44         ATA_ID_FW_REV           = 23,
  45         ATA_ID_PROD             = 27,
  46         ATA_ID_MAX_MULTSECT     = 47,
  47         ATA_ID_DWORD_IO         = 48,   /* before ATA-8 */
  48         ATA_ID_TRUSTED          = 48,   /* ATA-8 and later */
  49         ATA_ID_CAPABILITY       = 49,
  50         ATA_ID_OLD_PIO_MODES    = 51,
  51         ATA_ID_OLD_DMA_MODES    = 52,
  52         ATA_ID_FIELD_VALID      = 53,
  53         ATA_ID_CUR_CYLS         = 54,
  54         ATA_ID_CUR_HEADS        = 55,
  55         ATA_ID_CUR_SECTORS      = 56,
  56         ATA_ID_MULTSECT         = 59,
  57         ATA_ID_LBA_CAPACITY     = 60,
  58         ATA_ID_SWDMA_MODES      = 62,
  59         ATA_ID_MWDMA_MODES      = 63,
  60         ATA_ID_PIO_MODES        = 64,
  61         ATA_ID_EIDE_DMA_MIN     = 65,
  62         ATA_ID_EIDE_DMA_TIME    = 66,
  63         ATA_ID_EIDE_PIO         = 67,
  64         ATA_ID_EIDE_PIO_IORDY   = 68,
  65         ATA_ID_ADDITIONAL_SUPP  = 69,
  66         ATA_ID_QUEUE_DEPTH      = 75,
  67         ATA_ID_SATA_CAPABILITY  = 76,
  68         ATA_ID_SATA_CAPABILITY_2        = 77,
  69         ATA_ID_FEATURE_SUPP     = 78,
  70         ATA_ID_MAJOR_VER        = 80,
  71         ATA_ID_COMMAND_SET_1    = 82,
  72         ATA_ID_COMMAND_SET_2    = 83,
  73         ATA_ID_CFSSE            = 84,
  74         ATA_ID_CFS_ENABLE_1     = 85,
  75         ATA_ID_CFS_ENABLE_2     = 86,
  76         ATA_ID_CSF_DEFAULT      = 87,
  77         ATA_ID_UDMA_MODES       = 88,
  78         ATA_ID_HW_CONFIG        = 93,
  79         ATA_ID_SPG              = 98,
  80         ATA_ID_LBA_CAPACITY_2   = 100,
  81         ATA_ID_SECTOR_SIZE      = 106,
  82         ATA_ID_WWN              = 108,
  83         ATA_ID_LOGICAL_SECTOR_SIZE      = 117,  /* and 118 */
  84         ATA_ID_COMMAND_SET_3    = 119,
  85         ATA_ID_COMMAND_SET_4    = 120,
  86         ATA_ID_LAST_LUN         = 126,
  87         ATA_ID_DLF              = 128,
  88         ATA_ID_CSFO             = 129,
  89         ATA_ID_CFA_POWER        = 160,
  90         ATA_ID_CFA_KEY_MGMT     = 162,
  91         ATA_ID_CFA_MODES        = 163,
  92         ATA_ID_DATA_SET_MGMT    = 169,
  93         ATA_ID_SCT_CMD_XPORT    = 206,
  94         ATA_ID_ROT_SPEED        = 217,
  95         ATA_ID_PIO4             = (1 << 1),
  96 
  97         ATA_ID_SERNO_LEN        = 20,
  98         ATA_ID_FW_REV_LEN       = 8,
  99         ATA_ID_PROD_LEN         = 40,
 100         ATA_ID_WWN_LEN          = 8,
 101 
 102         ATA_PCI_CTL_OFS         = 2,
 103 
 104         ATA_PIO0                = (1 << 0),
 105         ATA_PIO1                = ATA_PIO0 | (1 << 1),
 106         ATA_PIO2                = ATA_PIO1 | (1 << 2),
 107         ATA_PIO3                = ATA_PIO2 | (1 << 3),
 108         ATA_PIO4                = ATA_PIO3 | (1 << 4),
 109         ATA_PIO5                = ATA_PIO4 | (1 << 5),
 110         ATA_PIO6                = ATA_PIO5 | (1 << 6),
 111 
 112         ATA_PIO4_ONLY           = (1 << 4),
 113 
 114         ATA_SWDMA0              = (1 << 0),
 115         ATA_SWDMA1              = ATA_SWDMA0 | (1 << 1),
 116         ATA_SWDMA2              = ATA_SWDMA1 | (1 << 2),
 117 
 118         ATA_SWDMA2_ONLY         = (1 << 2),
 119 
 120         ATA_MWDMA0              = (1 << 0),
 121         ATA_MWDMA1              = ATA_MWDMA0 | (1 << 1),
 122         ATA_MWDMA2              = ATA_MWDMA1 | (1 << 2),
 123         ATA_MWDMA3              = ATA_MWDMA2 | (1 << 3),
 124         ATA_MWDMA4              = ATA_MWDMA3 | (1 << 4),
 125 
 126         ATA_MWDMA12_ONLY        = (1 << 1) | (1 << 2),
 127         ATA_MWDMA2_ONLY         = (1 << 2),
 128 
 129         ATA_UDMA0               = (1 << 0),
 130         ATA_UDMA1               = ATA_UDMA0 | (1 << 1),
 131         ATA_UDMA2               = ATA_UDMA1 | (1 << 2),
 132         ATA_UDMA3               = ATA_UDMA2 | (1 << 3),
 133         ATA_UDMA4               = ATA_UDMA3 | (1 << 4),
 134         ATA_UDMA5               = ATA_UDMA4 | (1 << 5),
 135         ATA_UDMA6               = ATA_UDMA5 | (1 << 6),
 136         ATA_UDMA7               = ATA_UDMA6 | (1 << 7),
 137         /* ATA_UDMA7 is just for completeness... doesn't exist (yet?).  */
 138 
 139         ATA_UDMA24_ONLY         = (1 << 2) | (1 << 4),
 140 
 141         ATA_UDMA_MASK_40C       = ATA_UDMA2,    /* udma0-2 */
 142 
 143         /* DMA-related */
 144         ATA_PRD_SZ              = 8,
 145         ATA_PRD_TBL_SZ          = (ATA_MAX_PRD * ATA_PRD_SZ),
 146         ATA_PRD_EOT             = (1 << 31),    /* end-of-table flag */
 147 
 148         ATA_DMA_TABLE_OFS       = 4,
 149         ATA_DMA_STATUS          = 2,
 150         ATA_DMA_CMD             = 0,
 151         ATA_DMA_WR              = (1 << 3),
 152         ATA_DMA_START           = (1 << 0),
 153         ATA_DMA_INTR            = (1 << 2),
 154         ATA_DMA_ERR             = (1 << 1),
 155         ATA_DMA_ACTIVE          = (1 << 0),
 156 
 157         /* bits in ATA command block registers */
 158         ATA_HOB                 = (1 << 7),     /* LBA48 selector */
 159         ATA_NIEN                = (1 << 1),     /* disable-irq flag */
 160         ATA_LBA                 = (1 << 6),     /* LBA28 selector */
 161         ATA_DEV1                = (1 << 4),     /* Select Device 1 (slave) */
 162         ATA_DEVICE_OBS          = (1 << 7) | (1 << 5), /* obs bits in dev reg */
 163         ATA_DEVCTL_OBS          = (1 << 3),     /* obsolete bit in devctl reg */
 164         ATA_BUSY                = (1 << 7),     /* BSY status bit */
 165         ATA_DRDY                = (1 << 6),     /* device ready */
 166         ATA_DF                  = (1 << 5),     /* device fault */
 167         ATA_DSC                 = (1 << 4),     /* drive seek complete */
 168         ATA_DRQ                 = (1 << 3),     /* data request i/o */
 169         ATA_CORR                = (1 << 2),     /* corrected data error */
 170         ATA_SENSE               = (1 << 1),     /* sense code available */
 171         ATA_ERR                 = (1 << 0),     /* have an error */
 172         ATA_SRST                = (1 << 2),     /* software reset */
 173         ATA_ICRC                = (1 << 7),     /* interface CRC error */
 174         ATA_BBK                 = ATA_ICRC,     /* pre-EIDE: block marked bad */
 175         ATA_UNC                 = (1 << 6),     /* uncorrectable media error */
 176         ATA_MC                  = (1 << 5),     /* media changed */
 177         ATA_IDNF                = (1 << 4),     /* ID not found */
 178         ATA_MCR                 = (1 << 3),     /* media change requested */
 179         ATA_ABORTED             = (1 << 2),     /* command aborted */
 180         ATA_TRK0NF              = (1 << 1),     /* track 0 not found */
 181         ATA_AMNF                = (1 << 0),     /* address mark not found */
 182         ATAPI_LFS               = 0xF0,         /* last failed sense */
 183         ATAPI_EOM               = ATA_TRK0NF,   /* end of media */
 184         ATAPI_ILI               = ATA_AMNF,     /* illegal length indication */
 185         ATAPI_IO                = (1 << 1),
 186         ATAPI_COD               = (1 << 0),
 187 
 188         /* ATA command block registers */
 189         ATA_REG_DATA            = 0x00,
 190         ATA_REG_ERR             = 0x01,
 191         ATA_REG_NSECT           = 0x02,
 192         ATA_REG_LBAL            = 0x03,
 193         ATA_REG_LBAM            = 0x04,
 194         ATA_REG_LBAH            = 0x05,
 195         ATA_REG_DEVICE          = 0x06,
 196         ATA_REG_STATUS          = 0x07,
 197 
 198         ATA_REG_FEATURE         = ATA_REG_ERR, /* and their aliases */
 199         ATA_REG_CMD             = ATA_REG_STATUS,
 200         ATA_REG_BYTEL           = ATA_REG_LBAM,
 201         ATA_REG_BYTEH           = ATA_REG_LBAH,
 202         ATA_REG_DEVSEL          = ATA_REG_DEVICE,
 203         ATA_REG_IRQ             = ATA_REG_NSECT,
 204 
 205         /* ATA device commands */
 206         ATA_CMD_DEV_RESET       = 0x08, /* ATAPI device reset */
 207         ATA_CMD_CHK_POWER       = 0xE5, /* check power mode */
 208         ATA_CMD_STANDBY         = 0xE2, /* place in standby power mode */
 209         ATA_CMD_IDLE            = 0xE3, /* place in idle power mode */
 210         ATA_CMD_EDD             = 0x90, /* execute device diagnostic */
 211         ATA_CMD_DOWNLOAD_MICRO  = 0x92,
 212         ATA_CMD_DOWNLOAD_MICRO_DMA = 0x93,
 213         ATA_CMD_NOP             = 0x00,
 214         ATA_CMD_FLUSH           = 0xE7,
 215         ATA_CMD_FLUSH_EXT       = 0xEA,
 216         ATA_CMD_ID_ATA          = 0xEC,
 217         ATA_CMD_ID_ATAPI        = 0xA1,
 218         ATA_CMD_SERVICE         = 0xA2,
 219         ATA_CMD_READ            = 0xC8,
 220         ATA_CMD_READ_EXT        = 0x25,
 221         ATA_CMD_READ_QUEUED     = 0x26,
 222         ATA_CMD_READ_STREAM_EXT = 0x2B,
 223         ATA_CMD_READ_STREAM_DMA_EXT = 0x2A,
 224         ATA_CMD_WRITE           = 0xCA,
 225         ATA_CMD_WRITE_EXT       = 0x35,
 226         ATA_CMD_WRITE_QUEUED    = 0x36,
 227         ATA_CMD_WRITE_STREAM_EXT = 0x3B,
 228         ATA_CMD_WRITE_STREAM_DMA_EXT = 0x3A,
 229         ATA_CMD_WRITE_FUA_EXT   = 0x3D,
 230         ATA_CMD_WRITE_QUEUED_FUA_EXT = 0x3E,
 231         ATA_CMD_FPDMA_READ      = 0x60,
 232         ATA_CMD_FPDMA_WRITE     = 0x61,
 233         ATA_CMD_NCQ_NON_DATA    = 0x63,
 234         ATA_CMD_FPDMA_SEND      = 0x64,
 235         ATA_CMD_FPDMA_RECV      = 0x65,
 236         ATA_CMD_PIO_READ        = 0x20,
 237         ATA_CMD_PIO_READ_EXT    = 0x24,
 238         ATA_CMD_PIO_WRITE       = 0x30,
 239         ATA_CMD_PIO_WRITE_EXT   = 0x34,
 240         ATA_CMD_READ_MULTI      = 0xC4,
 241         ATA_CMD_READ_MULTI_EXT  = 0x29,
 242         ATA_CMD_WRITE_MULTI     = 0xC5,
 243         ATA_CMD_WRITE_MULTI_EXT = 0x39,
 244         ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
 245         ATA_CMD_SET_FEATURES    = 0xEF,
 246         ATA_CMD_SET_MULTI       = 0xC6,
 247         ATA_CMD_PACKET          = 0xA0,
 248         ATA_CMD_VERIFY          = 0x40,
 249         ATA_CMD_VERIFY_EXT      = 0x42,
 250         ATA_CMD_WRITE_UNCORR_EXT = 0x45,
 251         ATA_CMD_STANDBYNOW1     = 0xE0,
 252         ATA_CMD_IDLEIMMEDIATE   = 0xE1,
 253         ATA_CMD_SLEEP           = 0xE6,
 254         ATA_CMD_INIT_DEV_PARAMS = 0x91,
 255         ATA_CMD_READ_NATIVE_MAX = 0xF8,
 256         ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
 257         ATA_CMD_SET_MAX         = 0xF9,
 258         ATA_CMD_SET_MAX_EXT     = 0x37,
 259         ATA_CMD_READ_LOG_EXT    = 0x2F,
 260         ATA_CMD_WRITE_LOG_EXT   = 0x3F,
 261         ATA_CMD_READ_LOG_DMA_EXT = 0x47,
 262         ATA_CMD_WRITE_LOG_DMA_EXT = 0x57,
 263         ATA_CMD_TRUSTED_NONDATA = 0x5B,
 264         ATA_CMD_TRUSTED_RCV     = 0x5C,
 265         ATA_CMD_TRUSTED_RCV_DMA = 0x5D,
 266         ATA_CMD_TRUSTED_SND     = 0x5E,
 267         ATA_CMD_TRUSTED_SND_DMA = 0x5F,
 268         ATA_CMD_PMP_READ        = 0xE4,
 269         ATA_CMD_PMP_READ_DMA    = 0xE9,
 270         ATA_CMD_PMP_WRITE       = 0xE8,
 271         ATA_CMD_PMP_WRITE_DMA   = 0xEB,
 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         ATA_CMD_REQ_SENSE_DATA  = 0x0B,
 291         ATA_CMD_SANITIZE_DEVICE = 0xB4,
 292         ATA_CMD_ZAC_MGMT_IN     = 0x4A,
 293         ATA_CMD_ZAC_MGMT_OUT    = 0x9F,
 294 
 295         /* marked obsolete in the ATA/ATAPI-7 spec */
 296         ATA_CMD_RESTORE         = 0x10,
 297 
 298         /* Subcmds for ATA_CMD_FPDMA_RECV */
 299         ATA_SUBCMD_FPDMA_RECV_RD_LOG_DMA_EXT = 0x01,
 300         ATA_SUBCMD_FPDMA_RECV_ZAC_MGMT_IN    = 0x02,
 301 
 302         /* Subcmds for ATA_CMD_FPDMA_SEND */
 303         ATA_SUBCMD_FPDMA_SEND_DSM            = 0x00,
 304         ATA_SUBCMD_FPDMA_SEND_WR_LOG_DMA_EXT = 0x02,
 305 
 306         /* Subcmds for ATA_CMD_NCQ_NON_DATA */
 307         ATA_SUBCMD_NCQ_NON_DATA_ABORT_QUEUE  = 0x00,
 308         ATA_SUBCMD_NCQ_NON_DATA_SET_FEATURES = 0x05,
 309         ATA_SUBCMD_NCQ_NON_DATA_ZERO_EXT     = 0x06,
 310         ATA_SUBCMD_NCQ_NON_DATA_ZAC_MGMT_OUT = 0x07,
 311 
 312         /* Subcmds for ATA_CMD_ZAC_MGMT_IN */
 313         ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES = 0x00,
 314 
 315         /* Subcmds for ATA_CMD_ZAC_MGMT_OUT */
 316         ATA_SUBCMD_ZAC_MGMT_OUT_CLOSE_ZONE = 0x01,
 317         ATA_SUBCMD_ZAC_MGMT_OUT_FINISH_ZONE = 0x02,
 318         ATA_SUBCMD_ZAC_MGMT_OUT_OPEN_ZONE = 0x03,
 319         ATA_SUBCMD_ZAC_MGMT_OUT_RESET_WRITE_POINTER = 0x04,
 320 
 321         /* READ_LOG_EXT pages */
 322         ATA_LOG_DIRECTORY       = 0x0,
 323         ATA_LOG_SATA_NCQ        = 0x10,
 324         ATA_LOG_NCQ_NON_DATA    = 0x12,
 325         ATA_LOG_NCQ_SEND_RECV   = 0x13,
 326         ATA_LOG_IDENTIFY_DEVICE = 0x30,
 327 
 328         /* Identify device log pages: */
 329         ATA_LOG_SECURITY          = 0x06,
 330         ATA_LOG_SATA_SETTINGS     = 0x08,
 331         ATA_LOG_ZONED_INFORMATION = 0x09,
 332 
 333         /* Identify device SATA settings log:*/
 334         ATA_LOG_DEVSLP_OFFSET     = 0x30,
 335         ATA_LOG_DEVSLP_SIZE       = 0x08,
 336         ATA_LOG_DEVSLP_MDAT       = 0x00,
 337         ATA_LOG_DEVSLP_MDAT_MASK  = 0x1F,
 338         ATA_LOG_DEVSLP_DETO       = 0x01,
 339         ATA_LOG_DEVSLP_VALID      = 0x07,
 340         ATA_LOG_DEVSLP_VALID_MASK = 0x80,
 341         ATA_LOG_NCQ_PRIO_OFFSET   = 0x09,
 342 
 343         /* NCQ send and receive log */
 344         ATA_LOG_NCQ_SEND_RECV_SUBCMDS_OFFSET    = 0x00,
 345         ATA_LOG_NCQ_SEND_RECV_SUBCMDS_DSM       = (1 << 0),
 346         ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET        = 0x04,
 347         ATA_LOG_NCQ_SEND_RECV_DSM_TRIM          = (1 << 0),
 348         ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET     = 0x08,
 349         ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED  = (1 << 0),
 350         ATA_LOG_NCQ_SEND_RECV_WR_LOG_OFFSET     = 0x0C,
 351         ATA_LOG_NCQ_SEND_RECV_WR_LOG_SUPPORTED  = (1 << 0),
 352         ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET   = 0x10,
 353         ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OUT_SUPPORTED = (1 << 0),
 354         ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED = (1 << 1),
 355         ATA_LOG_NCQ_SEND_RECV_SIZE              = 0x14,
 356 
 357         /* NCQ Non-Data log */
 358         ATA_LOG_NCQ_NON_DATA_SUBCMDS_OFFSET     = 0x00,
 359         ATA_LOG_NCQ_NON_DATA_ABORT_OFFSET       = 0x00,
 360         ATA_LOG_NCQ_NON_DATA_ABORT_NCQ          = (1 << 0),
 361         ATA_LOG_NCQ_NON_DATA_ABORT_ALL          = (1 << 1),
 362         ATA_LOG_NCQ_NON_DATA_ABORT_STREAMING    = (1 << 2),
 363         ATA_LOG_NCQ_NON_DATA_ABORT_NON_STREAMING = (1 << 3),
 364         ATA_LOG_NCQ_NON_DATA_ABORT_SELECTED     = (1 << 4),
 365         ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET    = 0x1C,
 366         ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT       = (1 << 0),
 367         ATA_LOG_NCQ_NON_DATA_SIZE               = 0x40,
 368 
 369         /* READ/WRITE LONG (obsolete) */
 370         ATA_CMD_READ_LONG       = 0x22,
 371         ATA_CMD_READ_LONG_ONCE  = 0x23,
 372         ATA_CMD_WRITE_LONG      = 0x32,
 373         ATA_CMD_WRITE_LONG_ONCE = 0x33,
 374 
 375         /* SETFEATURES stuff */
 376         SETFEATURES_XFER        = 0x03,
 377         XFER_UDMA_7             = 0x47,
 378         XFER_UDMA_6             = 0x46,
 379         XFER_UDMA_5             = 0x45,
 380         XFER_UDMA_4             = 0x44,
 381         XFER_UDMA_3             = 0x43,
 382         XFER_UDMA_2             = 0x42,
 383         XFER_UDMA_1             = 0x41,
 384         XFER_UDMA_0             = 0x40,
 385         XFER_MW_DMA_4           = 0x24, /* CFA only */
 386         XFER_MW_DMA_3           = 0x23, /* CFA only */
 387         XFER_MW_DMA_2           = 0x22,
 388         XFER_MW_DMA_1           = 0x21,
 389         XFER_MW_DMA_0           = 0x20,
 390         XFER_SW_DMA_2           = 0x12,
 391         XFER_SW_DMA_1           = 0x11,
 392         XFER_SW_DMA_0           = 0x10,
 393         XFER_PIO_6              = 0x0E, /* CFA only */
 394         XFER_PIO_5              = 0x0D, /* CFA only */
 395         XFER_PIO_4              = 0x0C,
 396         XFER_PIO_3              = 0x0B,
 397         XFER_PIO_2              = 0x0A,
 398         XFER_PIO_1              = 0x09,
 399         XFER_PIO_0              = 0x08,
 400         XFER_PIO_SLOW           = 0x00,
 401 
 402         SETFEATURES_WC_ON       = 0x02, /* Enable write cache */
 403         SETFEATURES_WC_OFF      = 0x82, /* Disable write cache */
 404 
 405         SETFEATURES_RA_ON       = 0xaa, /* Enable read look-ahead */
 406         SETFEATURES_RA_OFF      = 0x55, /* Disable read look-ahead */
 407 
 408         /* Enable/Disable Automatic Acoustic Management */
 409         SETFEATURES_AAM_ON      = 0x42,
 410         SETFEATURES_AAM_OFF     = 0xC2,
 411 
 412         SETFEATURES_SPINUP              = 0x07, /* Spin-up drive */
 413         SETFEATURES_SPINUP_TIMEOUT      = 30000, /* 30s timeout for drive spin-up from PUIS */
 414 
 415         SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
 416         SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
 417 
 418         /* SETFEATURE Sector counts for SATA features */
 419         SATA_FPDMA_OFFSET       = 0x01, /* FPDMA non-zero buffer offsets */
 420         SATA_FPDMA_AA           = 0x02, /* FPDMA Setup FIS Auto-Activate */
 421         SATA_DIPM               = 0x03, /* Device Initiated Power Management */
 422         SATA_FPDMA_IN_ORDER     = 0x04, /* FPDMA in-order data delivery */
 423         SATA_AN                 = 0x05, /* Asynchronous Notification */
 424         SATA_SSP                = 0x06, /* Software Settings Preservation */
 425         SATA_DEVSLP             = 0x09, /* Device Sleep */
 426 
 427         SETFEATURE_SENSE_DATA   = 0xC3, /* Sense Data Reporting feature */
 428 
 429         /* feature values for SET_MAX */
 430         ATA_SET_MAX_ADDR        = 0x00,
 431         ATA_SET_MAX_PASSWD      = 0x01,
 432         ATA_SET_MAX_LOCK        = 0x02,
 433         ATA_SET_MAX_UNLOCK      = 0x03,
 434         ATA_SET_MAX_FREEZE_LOCK = 0x04,
 435         ATA_SET_MAX_PASSWD_DMA  = 0x05,
 436         ATA_SET_MAX_UNLOCK_DMA  = 0x06,
 437 
 438         /* feature values for DEVICE CONFIGURATION OVERLAY */
 439         ATA_DCO_RESTORE         = 0xC0,
 440         ATA_DCO_FREEZE_LOCK     = 0xC1,
 441         ATA_DCO_IDENTIFY        = 0xC2,
 442         ATA_DCO_SET             = 0xC3,
 443 
 444         /* feature values for SMART */
 445         ATA_SMART_ENABLE        = 0xD8,
 446         ATA_SMART_READ_VALUES   = 0xD0,
 447         ATA_SMART_READ_THRESHOLDS = 0xD1,
 448 
 449         /* feature values for Data Set Management */
 450         ATA_DSM_TRIM            = 0x01,
 451 
 452         /* password used in LBA Mid / LBA High for executing SMART commands */
 453         ATA_SMART_LBAM_PASS     = 0x4F,
 454         ATA_SMART_LBAH_PASS     = 0xC2,
 455 
 456         /* ATAPI stuff */
 457         ATAPI_PKT_DMA           = (1 << 0),
 458         ATAPI_DMADIR            = (1 << 2),     /* ATAPI data dir:
 459                                                    0=to device, 1=to host */
 460         ATAPI_CDB_LEN           = 16,
 461 
 462         /* PMP stuff */
 463         SATA_PMP_MAX_PORTS      = 15,
 464         SATA_PMP_CTRL_PORT      = 15,
 465 
 466         SATA_PMP_GSCR_DWORDS    = 128,
 467         SATA_PMP_GSCR_PROD_ID   = 0,
 468         SATA_PMP_GSCR_REV       = 1,
 469         SATA_PMP_GSCR_PORT_INFO = 2,
 470         SATA_PMP_GSCR_ERROR     = 32,
 471         SATA_PMP_GSCR_ERROR_EN  = 33,
 472         SATA_PMP_GSCR_FEAT      = 64,
 473         SATA_PMP_GSCR_FEAT_EN   = 96,
 474 
 475         SATA_PMP_PSCR_STATUS    = 0,
 476         SATA_PMP_PSCR_ERROR     = 1,
 477         SATA_PMP_PSCR_CONTROL   = 2,
 478 
 479         SATA_PMP_FEAT_BIST      = (1 << 0),
 480         SATA_PMP_FEAT_PMREQ     = (1 << 1),
 481         SATA_PMP_FEAT_DYNSSC    = (1 << 2),
 482         SATA_PMP_FEAT_NOTIFY    = (1 << 3),
 483 
 484         /* cable types */
 485         ATA_CBL_NONE            = 0,
 486         ATA_CBL_PATA40          = 1,
 487         ATA_CBL_PATA80          = 2,
 488         ATA_CBL_PATA40_SHORT    = 3,    /* 40 wire cable to high UDMA spec */
 489         ATA_CBL_PATA_UNK        = 4,    /* don't know, maybe 80c? */
 490         ATA_CBL_PATA_IGN        = 5,    /* don't know, ignore cable handling */
 491         ATA_CBL_SATA            = 6,
 492 
 493         /* SATA Status and Control Registers */
 494         SCR_STATUS              = 0,
 495         SCR_ERROR               = 1,
 496         SCR_CONTROL             = 2,
 497         SCR_ACTIVE              = 3,
 498         SCR_NOTIFICATION        = 4,
 499 
 500         /* SError bits */
 501         SERR_DATA_RECOVERED     = (1 << 0), /* recovered data error */
 502         SERR_COMM_RECOVERED     = (1 << 1), /* recovered comm failure */
 503         SERR_DATA               = (1 << 8), /* unrecovered data error */
 504         SERR_PERSISTENT         = (1 << 9), /* persistent data/comm error */
 505         SERR_PROTOCOL           = (1 << 10), /* protocol violation */
 506         SERR_INTERNAL           = (1 << 11), /* host internal error */
 507         SERR_PHYRDY_CHG         = (1 << 16), /* PHY RDY changed */
 508         SERR_PHY_INT_ERR        = (1 << 17), /* PHY internal error */
 509         SERR_COMM_WAKE          = (1 << 18), /* Comm wake */
 510         SERR_10B_8B_ERR         = (1 << 19), /* 10b to 8b decode error */
 511         SERR_DISPARITY          = (1 << 20), /* Disparity */
 512         SERR_CRC                = (1 << 21), /* CRC error */
 513         SERR_HANDSHAKE          = (1 << 22), /* Handshake error */
 514         SERR_LINK_SEQ_ERR       = (1 << 23), /* Link sequence error */
 515         SERR_TRANS_ST_ERROR     = (1 << 24), /* Transport state trans. error */
 516         SERR_UNRECOG_FIS        = (1 << 25), /* Unrecognized FIS */
 517         SERR_DEV_XCHG           = (1 << 26), /* device exchanged */
 518 };
 519 
 520 enum ata_prot_flags {
 521         /* protocol flags */
 522         ATA_PROT_FLAG_PIO       = (1 << 0), /* is PIO */
 523         ATA_PROT_FLAG_DMA       = (1 << 1), /* is DMA */
 524         ATA_PROT_FLAG_NCQ       = (1 << 2), /* is NCQ */
 525         ATA_PROT_FLAG_ATAPI     = (1 << 3), /* is ATAPI */
 526 
 527         /* taskfile protocols */
 528         ATA_PROT_UNKNOWN        = (u8)-1,
 529         ATA_PROT_NODATA         = 0,
 530         ATA_PROT_PIO            = ATA_PROT_FLAG_PIO,
 531         ATA_PROT_DMA            = ATA_PROT_FLAG_DMA,
 532         ATA_PROT_NCQ_NODATA     = ATA_PROT_FLAG_NCQ,
 533         ATA_PROT_NCQ            = ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ,
 534         ATAPI_PROT_NODATA       = ATA_PROT_FLAG_ATAPI,
 535         ATAPI_PROT_PIO          = ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO,
 536         ATAPI_PROT_DMA          = ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA,
 537 };
 538 
 539 enum ata_ioctls {
 540         ATA_IOC_GET_IO32        = 0x309, /* HDIO_GET_32BIT */
 541         ATA_IOC_SET_IO32        = 0x324, /* HDIO_SET_32BIT */
 542 };
 543 
 544 /* core structures */
 545 
 546 struct ata_bmdma_prd {
 547         __le32                  addr;
 548         __le32                  flags_len;
 549 };
 550 
 551 /*
 552  * id tests
 553  */
 554 #define ata_id_is_ata(id)       (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0)
 555 #define ata_id_has_lba(id)      ((id)[ATA_ID_CAPABILITY] & (1 << 9))
 556 #define ata_id_has_dma(id)      ((id)[ATA_ID_CAPABILITY] & (1 << 8))
 557 #define ata_id_has_ncq(id)      ((id)[ATA_ID_SATA_CAPABILITY] & (1 << 8))
 558 #define ata_id_queue_depth(id)  (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1)
 559 #define ata_id_removable(id)    ((id)[ATA_ID_CONFIG] & (1 << 7))
 560 #define ata_id_has_atapi_AN(id) \
 561         ((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \
 562           ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \
 563          ((id)[ATA_ID_FEATURE_SUPP] & (1 << 5)))
 564 #define ata_id_has_fpdma_aa(id) \
 565         ((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \
 566           ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \
 567          ((id)[ATA_ID_FEATURE_SUPP] & (1 << 2)))
 568 #define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10))
 569 #define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11))
 570 #define ata_id_u32(id,n)        \
 571         (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
 572 #define ata_id_u64(id,n)        \
 573         ( ((u64) (id)[(n) + 3] << 48) | \
 574           ((u64) (id)[(n) + 2] << 32) | \
 575           ((u64) (id)[(n) + 1] << 16) | \
 576           ((u64) (id)[(n) + 0]) )
 577 
 578 #define ata_id_cdb_intr(id)     (((id)[ATA_ID_CONFIG] & 0x60) == 0x20)
 579 #define ata_id_has_da(id)       ((id)[ATA_ID_SATA_CAPABILITY_2] & (1 << 4))
 580 #define ata_id_has_devslp(id)   ((id)[ATA_ID_FEATURE_SUPP] & (1 << 8))
 581 #define ata_id_has_ncq_autosense(id) \
 582                                 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 7))
 583 
 584 static inline bool ata_id_has_hipm(const u16 *id)
 585 {
 586         u16 val = id[ATA_ID_SATA_CAPABILITY];
 587 
 588         if (val == 0 || val == 0xffff)
 589                 return false;
 590 
 591         return val & (1 << 9);
 592 }
 593 
 594 static inline bool ata_id_has_dipm(const u16 *id)
 595 {
 596         u16 val = id[ATA_ID_FEATURE_SUPP];
 597 
 598         if (val == 0 || val == 0xffff)
 599                 return false;
 600 
 601         return val & (1 << 3);
 602 }
 603 
 604 
 605 static inline bool ata_id_has_fua(const u16 *id)
 606 {
 607         if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000)
 608                 return false;
 609         return id[ATA_ID_CFSSE] & (1 << 6);
 610 }
 611 
 612 static inline bool ata_id_has_flush(const u16 *id)
 613 {
 614         if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
 615                 return false;
 616         return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
 617 }
 618 
 619 static inline bool ata_id_flush_enabled(const u16 *id)
 620 {
 621         if (ata_id_has_flush(id) == 0)
 622                 return false;
 623         if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
 624                 return false;
 625         return id[ATA_ID_CFS_ENABLE_2] & (1 << 12);
 626 }
 627 
 628 static inline bool ata_id_has_flush_ext(const u16 *id)
 629 {
 630         if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
 631                 return false;
 632         return id[ATA_ID_COMMAND_SET_2] & (1 << 13);
 633 }
 634 
 635 static inline bool ata_id_flush_ext_enabled(const u16 *id)
 636 {
 637         if (ata_id_has_flush_ext(id) == 0)
 638                 return false;
 639         if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
 640                 return false;
 641         /*
 642          * some Maxtor disks have bit 13 defined incorrectly
 643          * so check bit 10 too
 644          */
 645         return (id[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400;
 646 }
 647 
 648 static inline u32 ata_id_logical_sector_size(const u16 *id)
 649 {
 650         /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128.
 651          * IDENTIFY DEVICE data, word 117-118.
 652          * 0xd000 ignores bit 13 (logical:physical > 1)
 653          */
 654         if ((id[ATA_ID_SECTOR_SIZE] & 0xd000) == 0x5000)
 655                 return (((id[ATA_ID_LOGICAL_SECTOR_SIZE+1] << 16)
 656                          + id[ATA_ID_LOGICAL_SECTOR_SIZE]) * sizeof(u16)) ;
 657         return ATA_SECT_SIZE;
 658 }
 659 
 660 static inline u8 ata_id_log2_per_physical_sector(const u16 *id)
 661 {
 662         /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128.
 663          * IDENTIFY DEVICE data, word 106.
 664          * 0xe000 ignores bit 12 (logical sector > 512 bytes)
 665          */
 666         if ((id[ATA_ID_SECTOR_SIZE] & 0xe000) == 0x6000)
 667                 return (id[ATA_ID_SECTOR_SIZE] & 0xf);
 668         return 0;
 669 }
 670 
 671 /* Offset of logical sectors relative to physical sectors.
 672  *
 673  * If device has more than one logical sector per physical sector
 674  * (aka 512 byte emulation), vendors might offset the "sector 0" address
 675  * so sector 63 is "naturally aligned" - e.g. FAT partition table.
 676  * This avoids Read/Mod/Write penalties when using FAT partition table
 677  * and updating "well aligned" (FS perspective) physical sectors on every
 678  * transaction.
 679  */
 680 static inline u16 ata_id_logical_sector_offset(const u16 *id,
 681          u8 log2_per_phys)
 682 {
 683         u16 word_209 = id[209];
 684 
 685         if ((log2_per_phys > 1) && (word_209 & 0xc000) == 0x4000) {
 686                 u16 first = word_209 & 0x3fff;
 687                 if (first > 0)
 688                         return (1 << log2_per_phys) - first;
 689         }
 690         return 0;
 691 }
 692 
 693 static inline bool ata_id_has_lba48(const u16 *id)
 694 {
 695         if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
 696                 return false;
 697         if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2))
 698                 return false;
 699         return id[ATA_ID_COMMAND_SET_2] & (1 << 10);
 700 }
 701 
 702 static inline bool ata_id_lba48_enabled(const u16 *id)
 703 {
 704         if (ata_id_has_lba48(id) == 0)
 705                 return false;
 706         if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
 707                 return false;
 708         return id[ATA_ID_CFS_ENABLE_2] & (1 << 10);
 709 }
 710 
 711 static inline bool ata_id_hpa_enabled(const u16 *id)
 712 {
 713         /* Yes children, word 83 valid bits cover word 82 data */
 714         if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
 715                 return false;
 716         /* And 87 covers 85-87 */
 717         if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
 718                 return false;
 719         /* Check command sets enabled as well as supported */
 720         if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0)
 721                 return false;
 722         return id[ATA_ID_COMMAND_SET_1] & (1 << 10);
 723 }
 724 
 725 static inline bool ata_id_has_wcache(const u16 *id)
 726 {
 727         /* Yes children, word 83 valid bits cover word 82 data */
 728         if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
 729                 return false;
 730         return id[ATA_ID_COMMAND_SET_1] & (1 << 5);
 731 }
 732 
 733 static inline bool ata_id_has_pm(const u16 *id)
 734 {
 735         if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
 736                 return false;
 737         return id[ATA_ID_COMMAND_SET_1] & (1 << 3);
 738 }
 739 
 740 static inline bool ata_id_rahead_enabled(const u16 *id)
 741 {
 742         if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
 743                 return false;
 744         return id[ATA_ID_CFS_ENABLE_1] & (1 << 6);
 745 }
 746 
 747 static inline bool ata_id_wcache_enabled(const u16 *id)
 748 {
 749         if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
 750                 return false;
 751         return id[ATA_ID_CFS_ENABLE_1] & (1 << 5);
 752 }
 753 
 754 static inline bool ata_id_has_read_log_dma_ext(const u16 *id)
 755 {
 756         /* Word 86 must have bit 15 set */
 757         if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15)))
 758                 return false;
 759 
 760         /* READ LOG DMA EXT support can be signaled either from word 119
 761          * or from word 120. The format is the same for both words: Bit
 762          * 15 must be cleared, bit 14 set and bit 3 set.
 763          */
 764         if ((id[ATA_ID_COMMAND_SET_3] & 0xC008) == 0x4008 ||
 765             (id[ATA_ID_COMMAND_SET_4] & 0xC008) == 0x4008)
 766                 return true;
 767 
 768         return false;
 769 }
 770 
 771 static inline bool ata_id_has_sense_reporting(const u16 *id)
 772 {
 773         if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15)))
 774                 return false;
 775         return id[ATA_ID_COMMAND_SET_3] & (1 << 6);
 776 }
 777 
 778 static inline bool ata_id_sense_reporting_enabled(const u16 *id)
 779 {
 780         if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15)))
 781                 return false;
 782         return id[ATA_ID_COMMAND_SET_4] & (1 << 6);
 783 }
 784 
 785 /**
 786  *
 787  * Word: 206 - SCT Command Transport
 788  *    15:12 - Vendor Specific
 789  *     11:6 - Reserved
 790  *        5 - SCT Command Transport Data Tables supported
 791  *        4 - SCT Command Transport Features Control supported
 792  *        3 - SCT Command Transport Error Recovery Control supported
 793  *        2 - SCT Command Transport Write Same supported
 794  *        1 - SCT Command Transport Long Sector Access supported
 795  *        0 - SCT Command Transport supported
 796  */
 797 static inline bool ata_id_sct_data_tables(const u16 *id)
 798 {
 799         return id[ATA_ID_SCT_CMD_XPORT] & (1 << 5) ? true : false;
 800 }
 801 
 802 static inline bool ata_id_sct_features_ctrl(const u16 *id)
 803 {
 804         return id[ATA_ID_SCT_CMD_XPORT] & (1 << 4) ? true : false;
 805 }
 806 
 807 static inline bool ata_id_sct_error_recovery_ctrl(const u16 *id)
 808 {
 809         return id[ATA_ID_SCT_CMD_XPORT] & (1 << 3) ? true : false;
 810 }
 811 
 812 static inline bool ata_id_sct_long_sector_access(const u16 *id)
 813 {
 814         return id[ATA_ID_SCT_CMD_XPORT] & (1 << 1) ? true : false;
 815 }
 816 
 817 static inline bool ata_id_sct_supported(const u16 *id)
 818 {
 819         return id[ATA_ID_SCT_CMD_XPORT] & (1 << 0) ? true : false;
 820 }
 821 
 822 /**
 823  *      ata_id_major_version    -       get ATA level of drive
 824  *      @id: Identify data
 825  *
 826  *      Caveats:
 827  *              ATA-1 considers identify optional
 828  *              ATA-2 introduces mandatory identify
 829  *              ATA-3 introduces word 80 and accurate reporting
 830  *
 831  *      The practical impact of this is that ata_id_major_version cannot
 832  *      reliably report on drives below ATA3.
 833  */
 834 
 835 static inline unsigned int ata_id_major_version(const u16 *id)
 836 {
 837         unsigned int mver;
 838 
 839         if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
 840                 return 0;
 841 
 842         for (mver = 14; mver >= 1; mver--)
 843                 if (id[ATA_ID_MAJOR_VER] & (1 << mver))
 844                         break;
 845         return mver;
 846 }
 847 
 848 static inline bool ata_id_is_sata(const u16 *id)
 849 {
 850         /*
 851          * See if word 93 is 0 AND drive is at least ATA-5 compatible
 852          * verifying that word 80 by casting it to a signed type --
 853          * this trick allows us to filter out the reserved values of
 854          * 0x0000 and 0xffff along with the earlier ATA revisions...
 855          */
 856         if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020)
 857                 return true;
 858         return false;
 859 }
 860 
 861 static inline bool ata_id_has_tpm(const u16 *id)
 862 {
 863         /* The TPM bits are only valid on ATA8 */
 864         if (ata_id_major_version(id) < 8)
 865                 return false;
 866         if ((id[48] & 0xC000) != 0x4000)
 867                 return false;
 868         return id[48] & (1 << 0);
 869 }
 870 
 871 static inline bool ata_id_has_dword_io(const u16 *id)
 872 {
 873         /* ATA 8 reuses this flag for "trusted" computing */
 874         if (ata_id_major_version(id) > 7)
 875                 return false;
 876         return id[ATA_ID_DWORD_IO] & (1 << 0);
 877 }
 878 
 879 static inline bool ata_id_has_trusted(const u16 *id)
 880 {
 881         if (ata_id_major_version(id) <= 7)
 882                 return false;
 883         return id[ATA_ID_TRUSTED] & (1 << 0);
 884 }
 885 
 886 static inline bool ata_id_has_unload(const u16 *id)
 887 {
 888         if (ata_id_major_version(id) >= 7 &&
 889             (id[ATA_ID_CFSSE] & 0xC000) == 0x4000 &&
 890             id[ATA_ID_CFSSE] & (1 << 13))
 891                 return true;
 892         return false;
 893 }
 894 
 895 static inline bool ata_id_has_wwn(const u16 *id)
 896 {
 897         return (id[ATA_ID_CSF_DEFAULT] & 0xC100) == 0x4100;
 898 }
 899 
 900 static inline int ata_id_form_factor(const u16 *id)
 901 {
 902         u16 val = id[168];
 903 
 904         if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
 905                 return 0;
 906 
 907         val &= 0xf;
 908 
 909         if (val > 5)
 910                 return 0;
 911 
 912         return val;
 913 }
 914 
 915 static inline int ata_id_rotation_rate(const u16 *id)
 916 {
 917         u16 val = id[217];
 918 
 919         if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
 920                 return 0;
 921 
 922         if (val > 1 && val < 0x401)
 923                 return 0;
 924 
 925         return val;
 926 }
 927 
 928 static inline bool ata_id_has_ncq_send_and_recv(const u16 *id)
 929 {
 930         return id[ATA_ID_SATA_CAPABILITY_2] & BIT(6);
 931 }
 932 
 933 static inline bool ata_id_has_ncq_non_data(const u16 *id)
 934 {
 935         return id[ATA_ID_SATA_CAPABILITY_2] & BIT(5);
 936 }
 937 
 938 static inline bool ata_id_has_ncq_prio(const u16 *id)
 939 {
 940         return id[ATA_ID_SATA_CAPABILITY] & BIT(12);
 941 }
 942 
 943 static inline bool ata_id_has_trim(const u16 *id)
 944 {
 945         if (ata_id_major_version(id) >= 7 &&
 946             (id[ATA_ID_DATA_SET_MGMT] & 1))
 947                 return true;
 948         return false;
 949 }
 950 
 951 static inline bool ata_id_has_zero_after_trim(const u16 *id)
 952 {
 953         /* DSM supported, deterministic read, and read zero after trim set */
 954         if (ata_id_has_trim(id) &&
 955             (id[ATA_ID_ADDITIONAL_SUPP] & 0x4020) == 0x4020)
 956                 return true;
 957 
 958         return false;
 959 }
 960 
 961 static inline bool ata_id_current_chs_valid(const u16 *id)
 962 {
 963         /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
 964            has not been issued to the device then the values of
 965            id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */
 966         return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */
 967                 id[ATA_ID_CUR_CYLS] &&  /* cylinders in current translation */
 968                 id[ATA_ID_CUR_HEADS] &&  /* heads in current translation */
 969                 id[ATA_ID_CUR_HEADS] <= 16 &&
 970                 id[ATA_ID_CUR_SECTORS];    /* sectors in current translation */
 971 }
 972 
 973 static inline bool ata_id_is_cfa(const u16 *id)
 974 {
 975         if ((id[ATA_ID_CONFIG] == 0x848A) ||    /* Traditional CF */
 976             (id[ATA_ID_CONFIG] == 0x844A))      /* Delkin Devices CF */
 977                 return true;
 978         /*
 979          * CF specs don't require specific value in the word 0 anymore and yet
 980          * they forbid to report the ATA version in the word 80 and require the
 981          * CFA feature set support to be indicated in the word 83 in this case.
 982          * Unfortunately, some cards only follow either of this requirements,
 983          * and while those that don't indicate CFA feature support need some
 984          * sort of quirk list, it seems impractical for the ones that do...
 985          */
 986         return (id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004;
 987 }
 988 
 989 static inline bool ata_id_is_ssd(const u16 *id)
 990 {
 991         return id[ATA_ID_ROT_SPEED] == 0x01;
 992 }
 993 
 994 static inline u8 ata_id_zoned_cap(const u16 *id)
 995 {
 996         return (id[ATA_ID_ADDITIONAL_SUPP] & 0x3);
 997 }
 998 
 999 static inline bool ata_id_pio_need_iordy(const u16 *id, const u8 pio)
1000 {
1001         /* CF spec. r4.1 Table 22 says no IORDY on PIO5 and PIO6. */
1002         if (pio > 4 && ata_id_is_cfa(id))
1003                 return false;
1004         /* For PIO3 and higher it is mandatory. */
1005         if (pio > 2)
1006                 return true;
1007         /* Turn it on when possible. */
1008         return ata_id_has_iordy(id);
1009 }
1010 
1011 static inline bool ata_drive_40wire(const u16 *dev_id)
1012 {
1013         if (ata_id_is_sata(dev_id))
1014                 return false;   /* SATA */
1015         if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000)
1016                 return false;   /* 80 wire */
1017         return true;
1018 }
1019 
1020 static inline bool ata_drive_40wire_relaxed(const u16 *dev_id)
1021 {
1022         if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000)
1023                 return false;   /* 80 wire */
1024         return true;
1025 }
1026 
1027 static inline int atapi_cdb_len(const u16 *dev_id)
1028 {
1029         u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3;
1030         switch (tmp) {
1031         case 0:         return 12;
1032         case 1:         return 16;
1033         default:        return -1;
1034         }
1035 }
1036 
1037 static inline int atapi_command_packet_set(const u16 *dev_id)
1038 {
1039         return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f;
1040 }
1041 
1042 static inline bool atapi_id_dmadir(const u16 *dev_id)
1043 {
1044         return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
1045 }
1046 
1047 /*
1048  * ata_id_is_lba_capacity_ok() performs a sanity check on
1049  * the claimed LBA capacity value for the device.
1050  *
1051  * Returns 1 if LBA capacity looks sensible, 0 otherwise.
1052  *
1053  * It is called only once for each device.
1054  */
1055 static inline bool ata_id_is_lba_capacity_ok(u16 *id)
1056 {
1057         unsigned long lba_sects, chs_sects, head, tail;
1058 
1059         /* No non-LBA info .. so valid! */
1060         if (id[ATA_ID_CYLS] == 0)
1061                 return true;
1062 
1063         lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
1064 
1065         /*
1066          * The ATA spec tells large drives to return
1067          * C/H/S = 16383/16/63 independent of their size.
1068          * Some drives can be jumpered to use 15 heads instead of 16.
1069          * Some drives can be jumpered to use 4092 cyls instead of 16383.
1070          */
1071         if ((id[ATA_ID_CYLS] == 16383 ||
1072              (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) &&
1073             id[ATA_ID_SECTORS] == 63 &&
1074             (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) &&
1075             (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS]))
1076                 return true;
1077 
1078         chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS];
1079 
1080         /* perform a rough sanity check on lba_sects: within 10% is OK */
1081         if (lba_sects - chs_sects < chs_sects/10)
1082                 return true;
1083 
1084         /* some drives have the word order reversed */
1085         head = (lba_sects >> 16) & 0xffff;
1086         tail = lba_sects & 0xffff;
1087         lba_sects = head | (tail << 16);
1088 
1089         if (lba_sects - chs_sects < chs_sects/10) {
1090                 *(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects);
1091                 return true;    /* LBA capacity is (now) good */
1092         }
1093 
1094         return false;   /* LBA capacity value may be bad */
1095 }
1096 
1097 static inline void ata_id_to_hd_driveid(u16 *id)
1098 {
1099 #ifdef __BIG_ENDIAN
1100         /* accessed in struct hd_driveid as 8-bit values */
1101         id[ATA_ID_MAX_MULTSECT]  = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]);
1102         id[ATA_ID_CAPABILITY]    = __cpu_to_le16(id[ATA_ID_CAPABILITY]);
1103         id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]);
1104         id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]);
1105         id[ATA_ID_MULTSECT]      = __cpu_to_le16(id[ATA_ID_MULTSECT]);
1106 
1107         /* as 32-bit values */
1108         *(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
1109         *(u32 *)&id[ATA_ID_SPG]          = ata_id_u32(id, ATA_ID_SPG);
1110 
1111         /* as 64-bit value */
1112         *(u64 *)&id[ATA_ID_LBA_CAPACITY_2] =
1113                 ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
1114 #endif
1115 }
1116 
1117 static inline bool ata_ok(u8 status)
1118 {
1119         return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
1120                         == ATA_DRDY);
1121 }
1122 
1123 static inline bool lba_28_ok(u64 block, u32 n_block)
1124 {
1125         /* check the ending block number: must be LESS THAN 0x0fffffff */
1126         return ((block + n_block) < ((1 << 28) - 1)) && (n_block <= ATA_MAX_SECTORS);
1127 }
1128 
1129 static inline bool lba_48_ok(u64 block, u32 n_block)
1130 {
1131         /* check the ending block number */
1132         return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= ATA_MAX_SECTORS_LBA48);
1133 }
1134 
1135 #define sata_pmp_gscr_vendor(gscr)      ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
1136 #define sata_pmp_gscr_devid(gscr)       ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
1137 #define sata_pmp_gscr_rev(gscr)         (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
1138 #define sata_pmp_gscr_ports(gscr)       ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
1139 
1140 #endif /* __LINUX_ATA_H__ */
/* [<][>][^][v][top][bottom][index][help] */
root/include/linux/ata.h

INCLUDED FROM

DEFINITIONS
