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linux-sg2042/include/linux/ata.h

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/*
* Copyright 2003-2004 Red Hat, Inc. All rights reserved.
* Copyright 2003-2004 Jeff Garzik
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
* libata documentation is available via 'make {ps|pdf}docs',
* as Documentation/DocBook/libata.*
*
* Hardware documentation available from http://www.t13.org/
*
*/
#ifndef __LINUX_ATA_H__
#define __LINUX_ATA_H__
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/types.h>
#include <asm/byteorder.h>
/* defines only for the constants which don't work well as enums */
#define ATA_DMA_BOUNDARY 0xffffUL
#define ATA_DMA_MASK 0xffffffffULL
enum {
/* various global constants */
ATA_MAX_DEVICES = 2, /* per bus/port */
ATA_MAX_PRD = 256, /* we could make these 256/256 */
ATA_SECT_SIZE = 512,
ATA_MAX_SECTORS_128 = 128,
ATA_MAX_SECTORS = 256,
ATA_MAX_SECTORS_1024 = 1024,
ATA_MAX_SECTORS_LBA48 = 65535,/* TODO: 65536? */
ATA_MAX_SECTORS_TAPE = 65535,
ATA_MAX_TRIM_RNUM = 64, /* 512-byte payload / (6-byte LBA + 2-byte range per entry) */
ATA_ID_WORDS = 256,
ATA_ID_CONFIG = 0,
ATA_ID_CYLS = 1,
ATA_ID_HEADS = 3,
ATA_ID_SECTORS = 6,
ATA_ID_SERNO = 10,
ATA_ID_BUF_SIZE = 21,
ATA_ID_FW_REV = 23,
ATA_ID_PROD = 27,
ATA_ID_MAX_MULTSECT = 47,
ATA_ID_DWORD_IO = 48,
ATA_ID_CAPABILITY = 49,
ATA_ID_OLD_PIO_MODES = 51,
ATA_ID_OLD_DMA_MODES = 52,
ATA_ID_FIELD_VALID = 53,
ATA_ID_CUR_CYLS = 54,
ATA_ID_CUR_HEADS = 55,
ATA_ID_CUR_SECTORS = 56,
ATA_ID_MULTSECT = 59,
ATA_ID_LBA_CAPACITY = 60,
ATA_ID_SWDMA_MODES = 62,
ATA_ID_MWDMA_MODES = 63,
ATA_ID_PIO_MODES = 64,
ATA_ID_EIDE_DMA_MIN = 65,
ATA_ID_EIDE_DMA_TIME = 66,
ATA_ID_EIDE_PIO = 67,
ATA_ID_EIDE_PIO_IORDY = 68,
ATA_ID_ADDITIONAL_SUPP = 69,
ATA_ID_QUEUE_DEPTH = 75,
ATA_ID_SATA_CAPABILITY = 76,
ATA_ID_SATA_CAPABILITY_2 = 77,
ATA_ID_FEATURE_SUPP = 78,
ATA_ID_MAJOR_VER = 80,
ATA_ID_COMMAND_SET_1 = 82,
ATA_ID_COMMAND_SET_2 = 83,
ATA_ID_CFSSE = 84,
ATA_ID_CFS_ENABLE_1 = 85,
ATA_ID_CFS_ENABLE_2 = 86,
ATA_ID_CSF_DEFAULT = 87,
ATA_ID_UDMA_MODES = 88,
ATA_ID_HW_CONFIG = 93,
ATA_ID_SPG = 98,
ATA_ID_LBA_CAPACITY_2 = 100,
ATA_ID_SECTOR_SIZE = 106,
ATA_ID_WWN = 108,
ATA_ID_LOGICAL_SECTOR_SIZE = 117, /* and 118 */
ATA_ID_COMMAND_SET_3 = 119,
ATA_ID_COMMAND_SET_4 = 120,
ATA_ID_LAST_LUN = 126,
ATA_ID_DLF = 128,
ATA_ID_CSFO = 129,
ATA_ID_CFA_POWER = 160,
ATA_ID_CFA_KEY_MGMT = 162,
ATA_ID_CFA_MODES = 163,
ATA_ID_DATA_SET_MGMT = 169,
ATA_ID_ROT_SPEED = 217,
ATA_ID_PIO4 = (1 << 1),
ATA_ID_SERNO_LEN = 20,
ATA_ID_FW_REV_LEN = 8,
ATA_ID_PROD_LEN = 40,
ATA_ID_WWN_LEN = 8,
ATA_PCI_CTL_OFS = 2,
ATA_PIO0 = (1 << 0),
ATA_PIO1 = ATA_PIO0 | (1 << 1),
ATA_PIO2 = ATA_PIO1 | (1 << 2),
ATA_PIO3 = ATA_PIO2 | (1 << 3),
ATA_PIO4 = ATA_PIO3 | (1 << 4),
ATA_PIO5 = ATA_PIO4 | (1 << 5),
ATA_PIO6 = ATA_PIO5 | (1 << 6),
ATA_PIO4_ONLY = (1 << 4),
ATA_SWDMA0 = (1 << 0),
ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1),
ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2),
ATA_SWDMA2_ONLY = (1 << 2),
ATA_MWDMA0 = (1 << 0),
ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1),
ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2),
ATA_MWDMA3 = ATA_MWDMA2 | (1 << 3),
ATA_MWDMA4 = ATA_MWDMA3 | (1 << 4),
ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2),
ATA_MWDMA2_ONLY = (1 << 2),
ATA_UDMA0 = (1 << 0),
ATA_UDMA1 = ATA_UDMA0 | (1 << 1),
ATA_UDMA2 = ATA_UDMA1 | (1 << 2),
ATA_UDMA3 = ATA_UDMA2 | (1 << 3),
ATA_UDMA4 = ATA_UDMA3 | (1 << 4),
ATA_UDMA5 = ATA_UDMA4 | (1 << 5),
ATA_UDMA6 = ATA_UDMA5 | (1 << 6),
ATA_UDMA7 = ATA_UDMA6 | (1 << 7),
/* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */
ATA_UDMA24_ONLY = (1 << 2) | (1 << 4),
ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */
/* DMA-related */
ATA_PRD_SZ = 8,
ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ),
ATA_PRD_EOT = (1 << 31), /* end-of-table flag */
ATA_DMA_TABLE_OFS = 4,
ATA_DMA_STATUS = 2,
ATA_DMA_CMD = 0,
ATA_DMA_WR = (1 << 3),
ATA_DMA_START = (1 << 0),
ATA_DMA_INTR = (1 << 2),
ATA_DMA_ERR = (1 << 1),
ATA_DMA_ACTIVE = (1 << 0),
/* bits in ATA command block registers */
ATA_HOB = (1 << 7), /* LBA48 selector */
ATA_NIEN = (1 << 1), /* disable-irq flag */
ATA_LBA = (1 << 6), /* LBA28 selector */
ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */
ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */
ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */
ATA_BUSY = (1 << 7), /* BSY status bit */
ATA_DRDY = (1 << 6), /* device ready */
ATA_DF = (1 << 5), /* device fault */
ATA_DSC = (1 << 4), /* drive seek complete */
ATA_DRQ = (1 << 3), /* data request i/o */
ATA_CORR = (1 << 2), /* corrected data error */
ATA_SENSE = (1 << 1), /* sense code available */
ATA_ERR = (1 << 0), /* have an error */
ATA_SRST = (1 << 2), /* software reset */
ATA_ICRC = (1 << 7), /* interface CRC error */
ATA_BBK = ATA_ICRC, /* pre-EIDE: block marked bad */
ATA_UNC = (1 << 6), /* uncorrectable media error */
ATA_MC = (1 << 5), /* media changed */
ATA_IDNF = (1 << 4), /* ID not found */
ATA_MCR = (1 << 3), /* media change requested */
ATA_ABORTED = (1 << 2), /* command aborted */
ATA_TRK0NF = (1 << 1), /* track 0 not found */
ATA_AMNF = (1 << 0), /* address mark not found */
ATAPI_LFS = 0xF0, /* last failed sense */
ATAPI_EOM = ATA_TRK0NF, /* end of media */
ATAPI_ILI = ATA_AMNF, /* illegal length indication */
ATAPI_IO = (1 << 1),
ATAPI_COD = (1 << 0),
/* ATA command block registers */
ATA_REG_DATA = 0x00,
ATA_REG_ERR = 0x01,
ATA_REG_NSECT = 0x02,
ATA_REG_LBAL = 0x03,
ATA_REG_LBAM = 0x04,
ATA_REG_LBAH = 0x05,
ATA_REG_DEVICE = 0x06,
ATA_REG_STATUS = 0x07,
ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */
ATA_REG_CMD = ATA_REG_STATUS,
ATA_REG_BYTEL = ATA_REG_LBAM,
ATA_REG_BYTEH = ATA_REG_LBAH,
ATA_REG_DEVSEL = ATA_REG_DEVICE,
ATA_REG_IRQ = ATA_REG_NSECT,
/* ATA device commands */
ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */
ATA_CMD_CHK_POWER = 0xE5, /* check power mode */
ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */
ATA_CMD_IDLE = 0xE3, /* place in idle power mode */
ATA_CMD_EDD = 0x90, /* execute device diagnostic */
ATA_CMD_DOWNLOAD_MICRO = 0x92,
ATA_CMD_DOWNLOAD_MICRO_DMA = 0x93,
ATA_CMD_NOP = 0x00,
ATA_CMD_FLUSH = 0xE7,
ATA_CMD_FLUSH_EXT = 0xEA,
ATA_CMD_ID_ATA = 0xEC,
ATA_CMD_ID_ATAPI = 0xA1,
ATA_CMD_SERVICE = 0xA2,
ATA_CMD_READ = 0xC8,
ATA_CMD_READ_EXT = 0x25,
ATA_CMD_READ_QUEUED = 0x26,
ATA_CMD_READ_STREAM_EXT = 0x2B,
ATA_CMD_READ_STREAM_DMA_EXT = 0x2A,
ATA_CMD_WRITE = 0xCA,
ATA_CMD_WRITE_EXT = 0x35,
ATA_CMD_WRITE_QUEUED = 0x36,
ATA_CMD_WRITE_STREAM_EXT = 0x3B,
ATA_CMD_WRITE_STREAM_DMA_EXT = 0x3A,
ATA_CMD_WRITE_FUA_EXT = 0x3D,
ATA_CMD_WRITE_QUEUED_FUA_EXT = 0x3E,
ATA_CMD_FPDMA_READ = 0x60,
ATA_CMD_FPDMA_WRITE = 0x61,
ATA_CMD_NCQ_NON_DATA = 0x63,
ATA_CMD_FPDMA_SEND = 0x64,
ATA_CMD_FPDMA_RECV = 0x65,
ATA_CMD_PIO_READ = 0x20,
ATA_CMD_PIO_READ_EXT = 0x24,
ATA_CMD_PIO_WRITE = 0x30,
ATA_CMD_PIO_WRITE_EXT = 0x34,
ATA_CMD_READ_MULTI = 0xC4,
ATA_CMD_READ_MULTI_EXT = 0x29,
ATA_CMD_WRITE_MULTI = 0xC5,
ATA_CMD_WRITE_MULTI_EXT = 0x39,
ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
ATA_CMD_SET_FEATURES = 0xEF,
ATA_CMD_SET_MULTI = 0xC6,
ATA_CMD_PACKET = 0xA0,
ATA_CMD_VERIFY = 0x40,
ATA_CMD_VERIFY_EXT = 0x42,
ATA_CMD_WRITE_UNCORR_EXT = 0x45,
ATA_CMD_STANDBYNOW1 = 0xE0,
ATA_CMD_IDLEIMMEDIATE = 0xE1,
ATA_CMD_SLEEP = 0xE6,
ATA_CMD_INIT_DEV_PARAMS = 0x91,
ATA_CMD_READ_NATIVE_MAX = 0xF8,
ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
ATA_CMD_SET_MAX = 0xF9,
ATA_CMD_SET_MAX_EXT = 0x37,
ATA_CMD_READ_LOG_EXT = 0x2F,
ATA_CMD_WRITE_LOG_EXT = 0x3F,
ATA_CMD_READ_LOG_DMA_EXT = 0x47,
ATA_CMD_WRITE_LOG_DMA_EXT = 0x57,
ATA_CMD_TRUSTED_NONDATA = 0x5B,
ATA_CMD_TRUSTED_RCV = 0x5C,
ATA_CMD_TRUSTED_RCV_DMA = 0x5D,
ATA_CMD_TRUSTED_SND = 0x5E,
ATA_CMD_TRUSTED_SND_DMA = 0x5F,
ATA_CMD_PMP_READ = 0xE4,
ATA_CMD_PMP_READ_DMA = 0xE9,
ATA_CMD_PMP_WRITE = 0xE8,
ATA_CMD_PMP_WRITE_DMA = 0xEB,
ATA_CMD_CONF_OVERLAY = 0xB1,
ATA_CMD_SEC_SET_PASS = 0xF1,
ATA_CMD_SEC_UNLOCK = 0xF2,
ATA_CMD_SEC_ERASE_PREP = 0xF3,
ATA_CMD_SEC_ERASE_UNIT = 0xF4,
ATA_CMD_SEC_FREEZE_LOCK = 0xF5,
ATA_CMD_SEC_DISABLE_PASS = 0xF6,
ATA_CMD_CONFIG_STREAM = 0x51,
ATA_CMD_SMART = 0xB0,
ATA_CMD_MEDIA_LOCK = 0xDE,
ATA_CMD_MEDIA_UNLOCK = 0xDF,
ATA_CMD_DSM = 0x06,
ATA_CMD_CHK_MED_CRD_TYP = 0xD1,
ATA_CMD_CFA_REQ_EXT_ERR = 0x03,
ATA_CMD_CFA_WRITE_NE = 0x38,
ATA_CMD_CFA_TRANS_SECT = 0x87,
ATA_CMD_CFA_ERASE = 0xC0,
ATA_CMD_CFA_WRITE_MULT_NE = 0xCD,
ATA_CMD_REQ_SENSE_DATA = 0x0B,
ATA_CMD_SANITIZE_DEVICE = 0xB4,
ATA_CMD_ZAC_MGMT_IN = 0x4A,
ATA_CMD_ZAC_MGMT_OUT = 0x9F,
/* marked obsolete in the ATA/ATAPI-7 spec */
ATA_CMD_RESTORE = 0x10,
/* Subcmds for ATA_CMD_FPDMA_RECV */
ATA_SUBCMD_FPDMA_RECV_RD_LOG_DMA_EXT = 0x01,
ATA_SUBCMD_FPDMA_RECV_ZAC_MGMT_IN = 0x02,
/* Subcmds for ATA_CMD_FPDMA_SEND */
ATA_SUBCMD_FPDMA_SEND_DSM = 0x00,
ATA_SUBCMD_FPDMA_SEND_WR_LOG_DMA_EXT = 0x02,
/* Subcmds for ATA_CMD_NCQ_NON_DATA */
ATA_SUBCMD_NCQ_NON_DATA_ABORT_QUEUE = 0x00,
ATA_SUBCMD_NCQ_NON_DATA_SET_FEATURES = 0x05,
ATA_SUBCMD_NCQ_NON_DATA_ZERO_EXT = 0x06,
ATA_SUBCMD_NCQ_NON_DATA_ZAC_MGMT_OUT = 0x07,
/* Subcmds for ATA_CMD_ZAC_MGMT_IN */
ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES = 0x00,
/* Subcmds for ATA_CMD_ZAC_MGMT_OUT */
ATA_SUBCMD_ZAC_MGMT_OUT_CLOSE_ZONE = 0x01,
ATA_SUBCMD_ZAC_MGMT_OUT_FINISH_ZONE = 0x02,
ATA_SUBCMD_ZAC_MGMT_OUT_OPEN_ZONE = 0x03,
ATA_SUBCMD_ZAC_MGMT_OUT_RESET_WRITE_POINTER = 0x04,
/* READ_LOG_EXT pages */
ATA_LOG_DIRECTORY = 0x0,
ATA_LOG_SATA_NCQ = 0x10,
ATA_LOG_NCQ_NON_DATA = 0x12,
ATA_LOG_NCQ_SEND_RECV = 0x13,
ATA_LOG_SATA_ID_DEV_DATA = 0x30,
ATA_LOG_SATA_SETTINGS = 0x08,
ATA_LOG_ZONED_INFORMATION = 0x09,
ATA_LOG_DEVSLP_OFFSET = 0x30,
ATA_LOG_DEVSLP_SIZE = 0x08,
ATA_LOG_DEVSLP_MDAT = 0x00,
ATA_LOG_DEVSLP_MDAT_MASK = 0x1F,
ATA_LOG_DEVSLP_DETO = 0x01,
ATA_LOG_DEVSLP_VALID = 0x07,
ATA_LOG_DEVSLP_VALID_MASK = 0x80,
/* NCQ send and receive log */
ATA_LOG_NCQ_SEND_RECV_SUBCMDS_OFFSET = 0x00,
ATA_LOG_NCQ_SEND_RECV_SUBCMDS_DSM = (1 << 0),
ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET = 0x04,
ATA_LOG_NCQ_SEND_RECV_DSM_TRIM = (1 << 0),
ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET = 0x08,
ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED = (1 << 0),
ATA_LOG_NCQ_SEND_RECV_WR_LOG_OFFSET = 0x0C,
ATA_LOG_NCQ_SEND_RECV_WR_LOG_SUPPORTED = (1 << 0),
ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET = 0x10,
ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OUT_SUPPORTED = (1 << 0),
ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED = (1 << 1),
ATA_LOG_NCQ_SEND_RECV_SIZE = 0x14,
/* NCQ Non-Data log */
ATA_LOG_NCQ_NON_DATA_SUBCMDS_OFFSET = 0x00,
ATA_LOG_NCQ_NON_DATA_ABORT_OFFSET = 0x00,
ATA_LOG_NCQ_NON_DATA_ABORT_NCQ = (1 << 0),
ATA_LOG_NCQ_NON_DATA_ABORT_ALL = (1 << 1),
ATA_LOG_NCQ_NON_DATA_ABORT_STREAMING = (1 << 2),
ATA_LOG_NCQ_NON_DATA_ABORT_NON_STREAMING = (1 << 3),
ATA_LOG_NCQ_NON_DATA_ABORT_SELECTED = (1 << 4),
ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET = 0x1C,
ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT = (1 << 0),
ATA_LOG_NCQ_NON_DATA_SIZE = 0x40,
/* READ/WRITE LONG (obsolete) */
ATA_CMD_READ_LONG = 0x22,
ATA_CMD_READ_LONG_ONCE = 0x23,
ATA_CMD_WRITE_LONG = 0x32,
ATA_CMD_WRITE_LONG_ONCE = 0x33,
/* SETFEATURES stuff */
SETFEATURES_XFER = 0x03,
XFER_UDMA_7 = 0x47,
XFER_UDMA_6 = 0x46,
XFER_UDMA_5 = 0x45,
XFER_UDMA_4 = 0x44,
XFER_UDMA_3 = 0x43,
XFER_UDMA_2 = 0x42,
XFER_UDMA_1 = 0x41,
XFER_UDMA_0 = 0x40,
XFER_MW_DMA_4 = 0x24, /* CFA only */
XFER_MW_DMA_3 = 0x23, /* CFA only */
XFER_MW_DMA_2 = 0x22,
XFER_MW_DMA_1 = 0x21,
XFER_MW_DMA_0 = 0x20,
XFER_SW_DMA_2 = 0x12,
XFER_SW_DMA_1 = 0x11,
XFER_SW_DMA_0 = 0x10,
XFER_PIO_6 = 0x0E, /* CFA only */
XFER_PIO_5 = 0x0D, /* CFA only */
XFER_PIO_4 = 0x0C,
XFER_PIO_3 = 0x0B,
XFER_PIO_2 = 0x0A,
XFER_PIO_1 = 0x09,
XFER_PIO_0 = 0x08,
XFER_PIO_SLOW = 0x00,
SETFEATURES_WC_ON = 0x02, /* Enable write cache */
SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
SETFEATURES_RA_ON = 0xaa, /* Enable read look-ahead */
SETFEATURES_RA_OFF = 0x55, /* Disable read look-ahead */
/* Enable/Disable Automatic Acoustic Management */
SETFEATURES_AAM_ON = 0x42,
SETFEATURES_AAM_OFF = 0xC2,
SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
SETFEATURES_SPINUP_TIMEOUT = 30000, /* 30s timeout for drive spin-up from PUIS */
SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
/* SETFEATURE Sector counts for SATA features */
SATA_FPDMA_OFFSET = 0x01, /* FPDMA non-zero buffer offsets */
SATA_FPDMA_AA = 0x02, /* FPDMA Setup FIS Auto-Activate */
SATA_DIPM = 0x03, /* Device Initiated Power Management */
SATA_FPDMA_IN_ORDER = 0x04, /* FPDMA in-order data delivery */
SATA_AN = 0x05, /* Asynchronous Notification */
SATA_SSP = 0x06, /* Software Settings Preservation */
SATA_DEVSLP = 0x09, /* Device Sleep */
SETFEATURE_SENSE_DATA = 0xC3, /* Sense Data Reporting feature */
/* feature values for SET_MAX */
ATA_SET_MAX_ADDR = 0x00,
ATA_SET_MAX_PASSWD = 0x01,
ATA_SET_MAX_LOCK = 0x02,
ATA_SET_MAX_UNLOCK = 0x03,
ATA_SET_MAX_FREEZE_LOCK = 0x04,
/* feature values for DEVICE CONFIGURATION OVERLAY */
ATA_DCO_RESTORE = 0xC0,
ATA_DCO_FREEZE_LOCK = 0xC1,
ATA_DCO_IDENTIFY = 0xC2,
ATA_DCO_SET = 0xC3,
/* feature values for SMART */
ATA_SMART_ENABLE = 0xD8,
ATA_SMART_READ_VALUES = 0xD0,
ATA_SMART_READ_THRESHOLDS = 0xD1,
/* feature values for Data Set Management */
ATA_DSM_TRIM = 0x01,
/* password used in LBA Mid / LBA High for executing SMART commands */
ATA_SMART_LBAM_PASS = 0x4F,
ATA_SMART_LBAH_PASS = 0xC2,
/* ATAPI stuff */
ATAPI_PKT_DMA = (1 << 0),
ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
0=to device, 1=to host */
ATAPI_CDB_LEN = 16,
/* PMP stuff */
SATA_PMP_MAX_PORTS = 15,
SATA_PMP_CTRL_PORT = 15,
SATA_PMP_GSCR_DWORDS = 128,
SATA_PMP_GSCR_PROD_ID = 0,
SATA_PMP_GSCR_REV = 1,
SATA_PMP_GSCR_PORT_INFO = 2,
SATA_PMP_GSCR_ERROR = 32,
SATA_PMP_GSCR_ERROR_EN = 33,
SATA_PMP_GSCR_FEAT = 64,
SATA_PMP_GSCR_FEAT_EN = 96,
SATA_PMP_PSCR_STATUS = 0,
SATA_PMP_PSCR_ERROR = 1,
SATA_PMP_PSCR_CONTROL = 2,
SATA_PMP_FEAT_BIST = (1 << 0),
SATA_PMP_FEAT_PMREQ = (1 << 1),
SATA_PMP_FEAT_DYNSSC = (1 << 2),
SATA_PMP_FEAT_NOTIFY = (1 << 3),
/* cable types */
ATA_CBL_NONE = 0,
ATA_CBL_PATA40 = 1,
ATA_CBL_PATA80 = 2,
ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */
ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */
ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */
ATA_CBL_SATA = 6,
/* SATA Status and Control Registers */
SCR_STATUS = 0,
SCR_ERROR = 1,
SCR_CONTROL = 2,
SCR_ACTIVE = 3,
SCR_NOTIFICATION = 4,
/* SError bits */
SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */
SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */
SERR_DATA = (1 << 8), /* unrecovered data error */
SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */
SERR_PROTOCOL = (1 << 10), /* protocol violation */
SERR_INTERNAL = (1 << 11), /* host internal error */
SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */
SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */
SERR_COMM_WAKE = (1 << 18), /* Comm wake */
SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */
SERR_DISPARITY = (1 << 20), /* Disparity */
SERR_CRC = (1 << 21), /* CRC error */
SERR_HANDSHAKE = (1 << 22), /* Handshake error */
SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */
SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */
SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */
SERR_DEV_XCHG = (1 << 26), /* device exchanged */
};
enum ata_tf_protocols {
/* ATA taskfile protocols */
ATA_PROT_UNKNOWN, /* unknown/invalid */
ATA_PROT_NODATA, /* no data */
ATA_PROT_PIO, /* PIO data xfer */
ATA_PROT_DMA, /* DMA */
ATA_PROT_NCQ, /* NCQ */
ATA_PROT_NCQ_NODATA, /* NCQ no data */
ATAPI_PROT_NODATA, /* packet command, no data */
ATAPI_PROT_PIO, /* packet command, PIO data xfer*/
ATAPI_PROT_DMA, /* packet command with special DMA sauce */
};
enum ata_ioctls {
ATA_IOC_GET_IO32 = 0x309, /* HDIO_GET_32BIT */
ATA_IOC_SET_IO32 = 0x324, /* HDIO_SET_32BIT */
};
/* core structures */
struct ata_bmdma_prd {
__le32 addr;
__le32 flags_len;
};
/*
* id tests
*/
#define ata_id_is_ata(id) (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0)
#define ata_id_has_lba(id) ((id)[ATA_ID_CAPABILITY] & (1 << 9))
#define ata_id_has_dma(id) ((id)[ATA_ID_CAPABILITY] & (1 << 8))
#define ata_id_has_ncq(id) ((id)[ATA_ID_SATA_CAPABILITY] & (1 << 8))
#define ata_id_queue_depth(id) (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1)
#define ata_id_removable(id) ((id)[ATA_ID_CONFIG] & (1 << 7))
#define ata_id_has_atapi_AN(id) \
((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \
((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \
((id)[ATA_ID_FEATURE_SUPP] & (1 << 5)))
#define ata_id_has_fpdma_aa(id) \
((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \
((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \
((id)[ATA_ID_FEATURE_SUPP] & (1 << 2)))
#define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10))
#define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11))
#define ata_id_u32(id,n) \
(((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
#define ata_id_u64(id,n) \
( ((u64) (id)[(n) + 3] << 48) | \
((u64) (id)[(n) + 2] << 32) | \
((u64) (id)[(n) + 1] << 16) | \
((u64) (id)[(n) + 0]) )
#define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20)
#define ata_id_has_da(id) ((id)[ATA_ID_SATA_CAPABILITY_2] & (1 << 4))
#define ata_id_has_devslp(id) ((id)[ATA_ID_FEATURE_SUPP] & (1 << 8))
#define ata_id_has_ncq_autosense(id) \
((id)[ATA_ID_FEATURE_SUPP] & (1 << 7))
static inline bool ata_id_has_hipm(const u16 *id)
{
u16 val = id[ATA_ID_SATA_CAPABILITY];
if (val == 0 || val == 0xffff)
return false;
return val & (1 << 9);
}
static inline bool ata_id_has_dipm(const u16 *id)
{
u16 val = id[ATA_ID_FEATURE_SUPP];
if (val == 0 || val == 0xffff)
return false;
return val & (1 << 3);
}
static inline bool ata_id_has_fua(const u16 *id)
{
if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000)
return false;
return id[ATA_ID_CFSSE] & (1 << 6);
}
static inline bool ata_id_has_flush(const u16 *id)
{
if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
return false;
return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
}
static inline bool ata_id_flush_enabled(const u16 *id)
{
if (ata_id_has_flush(id) == 0)
return false;
if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
return false;
return id[ATA_ID_CFS_ENABLE_2] & (1 << 12);
}
static inline bool ata_id_has_flush_ext(const u16 *id)
{
if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
return false;
return id[ATA_ID_COMMAND_SET_2] & (1 << 13);
}
static inline bool ata_id_flush_ext_enabled(const u16 *id)
{
if (ata_id_has_flush_ext(id) == 0)
return false;
if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
return false;
/*
* some Maxtor disks have bit 13 defined incorrectly
* so check bit 10 too
*/
return (id[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400;
}
static inline u32 ata_id_logical_sector_size(const u16 *id)
{
/* T13/1699-D Revision 6a, Sep 6, 2008. Page 128.
* IDENTIFY DEVICE data, word 117-118.
* 0xd000 ignores bit 13 (logical:physical > 1)
*/
if ((id[ATA_ID_SECTOR_SIZE] & 0xd000) == 0x5000)
return (((id[ATA_ID_LOGICAL_SECTOR_SIZE+1] << 16)
+ id[ATA_ID_LOGICAL_SECTOR_SIZE]) * sizeof(u16)) ;
return ATA_SECT_SIZE;
}
static inline u8 ata_id_log2_per_physical_sector(const u16 *id)
{
/* T13/1699-D Revision 6a, Sep 6, 2008. Page 128.
* IDENTIFY DEVICE data, word 106.
* 0xe000 ignores bit 12 (logical sector > 512 bytes)
*/
if ((id[ATA_ID_SECTOR_SIZE] & 0xe000) == 0x6000)
return (id[ATA_ID_SECTOR_SIZE] & 0xf);
return 0;
}
/* Offset of logical sectors relative to physical sectors.
*
* If device has more than one logical sector per physical sector
* (aka 512 byte emulation), vendors might offset the "sector 0" address
* so sector 63 is "naturally aligned" - e.g. FAT partition table.
* This avoids Read/Mod/Write penalties when using FAT partition table
* and updating "well aligned" (FS perspective) physical sectors on every
* transaction.
*/
static inline u16 ata_id_logical_sector_offset(const u16 *id,
u8 log2_per_phys)
{
u16 word_209 = id[209];
if ((log2_per_phys > 1) && (word_209 & 0xc000) == 0x4000) {
u16 first = word_209 & 0x3fff;
if (first > 0)
return (1 << log2_per_phys) - first;
}
return 0;
}
static inline bool ata_id_has_lba48(const u16 *id)
{
if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
return false;
if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2))
return false;
return id[ATA_ID_COMMAND_SET_2] & (1 << 10);
}
static inline bool ata_id_lba48_enabled(const u16 *id)
{
if (ata_id_has_lba48(id) == 0)
return false;
if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
return false;
return id[ATA_ID_CFS_ENABLE_2] & (1 << 10);
}
static inline bool ata_id_hpa_enabled(const u16 *id)
{
/* Yes children, word 83 valid bits cover word 82 data */
if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
return false;
/* And 87 covers 85-87 */
if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
return false;
/* Check command sets enabled as well as supported */
if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0)
return false;
return id[ATA_ID_COMMAND_SET_1] & (1 << 10);
}
static inline bool ata_id_has_wcache(const u16 *id)
{
/* Yes children, word 83 valid bits cover word 82 data */
if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
return false;
return id[ATA_ID_COMMAND_SET_1] & (1 << 5);
}
static inline bool ata_id_has_pm(const u16 *id)
{
if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
return false;
return id[ATA_ID_COMMAND_SET_1] & (1 << 3);
}
static inline bool ata_id_rahead_enabled(const u16 *id)
{
if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
return false;
return id[ATA_ID_CFS_ENABLE_1] & (1 << 6);
}
static inline bool ata_id_wcache_enabled(const u16 *id)
{
if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
return false;
return id[ATA_ID_CFS_ENABLE_1] & (1 << 5);
}
static inline bool ata_id_has_read_log_dma_ext(const u16 *id)
{
/* Word 86 must have bit 15 set */
if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15)))
return false;
/* READ LOG DMA EXT support can be signaled either from word 119
* or from word 120. The format is the same for both words: Bit
* 15 must be cleared, bit 14 set and bit 3 set.
*/
if ((id[ATA_ID_COMMAND_SET_3] & 0xC008) == 0x4008 ||
(id[ATA_ID_COMMAND_SET_4] & 0xC008) == 0x4008)
return true;
return false;
}
static inline bool ata_id_has_sense_reporting(const u16 *id)
{
if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15)))
return false;
return id[ATA_ID_COMMAND_SET_3] & (1 << 6);
}
static inline bool ata_id_sense_reporting_enabled(const u16 *id)
{
if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15)))
return false;
return id[ATA_ID_COMMAND_SET_4] & (1 << 6);
}
/**
* ata_id_major_version - get ATA level of drive
* @id: Identify data
*
* Caveats:
* ATA-1 considers identify optional
* ATA-2 introduces mandatory identify
* ATA-3 introduces word 80 and accurate reporting
*
* The practical impact of this is that ata_id_major_version cannot
* reliably report on drives below ATA3.
*/
static inline unsigned int ata_id_major_version(const u16 *id)
{
unsigned int mver;
if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
return 0;
for (mver = 14; mver >= 1; mver--)
if (id[ATA_ID_MAJOR_VER] & (1 << mver))
break;
return mver;
}
static inline bool ata_id_is_sata(const u16 *id)
{
/*
* See if word 93 is 0 AND drive is at least ATA-5 compatible
* verifying that word 80 by casting it to a signed type --
* this trick allows us to filter out the reserved values of
* 0x0000 and 0xffff along with the earlier ATA revisions...
*/
if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020)
return true;
return false;
}
static inline bool ata_id_has_tpm(const u16 *id)
{
/* The TPM bits are only valid on ATA8 */
if (ata_id_major_version(id) < 8)
return false;
if ((id[48] & 0xC000) != 0x4000)
return false;
return id[48] & (1 << 0);
}
static inline bool ata_id_has_dword_io(const u16 *id)
{
/* ATA 8 reuses this flag for "trusted" computing */
if (ata_id_major_version(id) > 7)
return false;
return id[ATA_ID_DWORD_IO] & (1 << 0);
}
static inline bool ata_id_has_unload(const u16 *id)
{
if (ata_id_major_version(id) >= 7 &&
(id[ATA_ID_CFSSE] & 0xC000) == 0x4000 &&
id[ATA_ID_CFSSE] & (1 << 13))
return true;
return false;
}
static inline bool ata_id_has_wwn(const u16 *id)
{
return (id[ATA_ID_CSF_DEFAULT] & 0xC100) == 0x4100;
}
static inline int ata_id_form_factor(const u16 *id)
{
u16 val = id[168];
if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
return 0;
val &= 0xf;
if (val > 5)
return 0;
return val;
}
static inline int ata_id_rotation_rate(const u16 *id)
{
u16 val = id[217];
if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
return 0;
if (val > 1 && val < 0x401)
return 0;
return val;
}
static inline bool ata_id_has_ncq_send_and_recv(const u16 *id)
{
return id[ATA_ID_SATA_CAPABILITY_2] & BIT(6);
}
static inline bool ata_id_has_ncq_non_data(const u16 *id)
{
return id[ATA_ID_SATA_CAPABILITY_2] & BIT(5);
}
static inline bool ata_id_has_trim(const u16 *id)
{
if (ata_id_major_version(id) >= 7 &&
(id[ATA_ID_DATA_SET_MGMT] & 1))
return true;
return false;
}
static inline bool ata_id_has_zero_after_trim(const u16 *id)
{
/* DSM supported, deterministic read, and read zero after trim set */
if (ata_id_has_trim(id) &&
(id[ATA_ID_ADDITIONAL_SUPP] & 0x4020) == 0x4020)
return true;
return false;
}
static inline bool ata_id_current_chs_valid(const u16 *id)
{
/* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
has not been issued to the device then the values of
id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */
return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */
id[ATA_ID_CUR_CYLS] && /* cylinders in current translation */
id[ATA_ID_CUR_HEADS] && /* heads in current translation */
id[ATA_ID_CUR_HEADS] <= 16 &&
id[ATA_ID_CUR_SECTORS]; /* sectors in current translation */
}
static inline bool ata_id_is_cfa(const u16 *id)
{
if ((id[ATA_ID_CONFIG] == 0x848A) || /* Traditional CF */
(id[ATA_ID_CONFIG] == 0x844A)) /* Delkin Devices CF */
return true;
/*
* CF specs don't require specific value in the word 0 anymore and yet
* they forbid to report the ATA version in the word 80 and require the
* CFA feature set support to be indicated in the word 83 in this case.
* Unfortunately, some cards only follow either of this requirements,
* and while those that don't indicate CFA feature support need some
* sort of quirk list, it seems impractical for the ones that do...
*/
return (id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004;
}
static inline bool ata_id_is_ssd(const u16 *id)
{
return id[ATA_ID_ROT_SPEED] == 0x01;
}
static inline u8 ata_id_zoned_cap(const u16 *id)
{
return (id[ATA_ID_ADDITIONAL_SUPP] & 0x3);
}
static inline bool ata_id_pio_need_iordy(const u16 *id, const u8 pio)
{
/* CF spec. r4.1 Table 22 says no IORDY on PIO5 and PIO6. */
if (pio > 4 && ata_id_is_cfa(id))
return false;
/* For PIO3 and higher it is mandatory. */
if (pio > 2)
return true;
/* Turn it on when possible. */
return ata_id_has_iordy(id);
}
static inline bool ata_drive_40wire(const u16 *dev_id)
{
if (ata_id_is_sata(dev_id))
return false; /* SATA */
if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000)
return false; /* 80 wire */
return true;
}
static inline bool ata_drive_40wire_relaxed(const u16 *dev_id)
{
if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000)
return false; /* 80 wire */
return true;
}
static inline int atapi_cdb_len(const u16 *dev_id)
{
u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3;
switch (tmp) {
case 0: return 12;
case 1: return 16;
default: return -1;
}
}
static inline int atapi_command_packet_set(const u16 *dev_id)
{
return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f;
}
static inline bool atapi_id_dmadir(const u16 *dev_id)
{
return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
}
/*
* ata_id_is_lba_capacity_ok() performs a sanity check on
* the claimed LBA capacity value for the device.
*
* Returns 1 if LBA capacity looks sensible, 0 otherwise.
*
* It is called only once for each device.
*/
static inline bool ata_id_is_lba_capacity_ok(u16 *id)
{
unsigned long lba_sects, chs_sects, head, tail;
/* No non-LBA info .. so valid! */
if (id[ATA_ID_CYLS] == 0)
return true;
lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
/*
* The ATA spec tells large drives to return
* C/H/S = 16383/16/63 independent of their size.
* Some drives can be jumpered to use 15 heads instead of 16.
* Some drives can be jumpered to use 4092 cyls instead of 16383.
*/
if ((id[ATA_ID_CYLS] == 16383 ||
(id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) &&
id[ATA_ID_SECTORS] == 63 &&
(id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) &&
(lba_sects >= 16383 * 63 * id[ATA_ID_HEADS]))
return true;
chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS];
/* perform a rough sanity check on lba_sects: within 10% is OK */
if (lba_sects - chs_sects < chs_sects/10)
return true;
/* some drives have the word order reversed */
head = (lba_sects >> 16) & 0xffff;
tail = lba_sects & 0xffff;
lba_sects = head | (tail << 16);
if (lba_sects - chs_sects < chs_sects/10) {
*(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects);
return true; /* LBA capacity is (now) good */
}
return false; /* LBA capacity value may be bad */
}
static inline void ata_id_to_hd_driveid(u16 *id)
{
#ifdef __BIG_ENDIAN
/* accessed in struct hd_driveid as 8-bit values */
id[ATA_ID_MAX_MULTSECT] = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]);
id[ATA_ID_CAPABILITY] = __cpu_to_le16(id[ATA_ID_CAPABILITY]);
id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]);
id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]);
id[ATA_ID_MULTSECT] = __cpu_to_le16(id[ATA_ID_MULTSECT]);
/* as 32-bit values */
*(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
*(u32 *)&id[ATA_ID_SPG] = ata_id_u32(id, ATA_ID_SPG);
/* as 64-bit value */
*(u64 *)&id[ATA_ID_LBA_CAPACITY_2] =
ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
#endif
}
/*
* Write LBA Range Entries to the buffer that will cover the extent from
* sector to sector + count. This is used for TRIM and for ADD LBA(S)
* TO NV CACHE PINNED SET.
*/
static inline unsigned ata_set_lba_range_entries(void *_buffer,
unsigned num, u64 sector, unsigned long count)
{
__le64 *buffer = _buffer;
unsigned i = 0, used_bytes;
while (i < num) {
u64 entry = sector |
((u64)(count > 0xffff ? 0xffff : count) << 48);
buffer[i++] = __cpu_to_le64(entry);
if (count <= 0xffff)
break;
count -= 0xffff;
sector += 0xffff;
}
used_bytes = ALIGN(i * 8, 512);
memset(buffer + i, 0, used_bytes - i * 8);
return used_bytes;
}
static inline bool ata_ok(u8 status)
{
return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
== ATA_DRDY);
}
static inline bool lba_28_ok(u64 block, u32 n_block)
{
/* check the ending block number: must be LESS THAN 0x0fffffff */
return ((block + n_block) < ((1 << 28) - 1)) && (n_block <= 256);
}
static inline bool lba_48_ok(u64 block, u32 n_block)
{
/* check the ending block number */
return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
}
#define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
#define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
#define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
#define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
#endif /* __LINUX_ATA_H__ */
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