2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/*
|
2005-08-28 18:18:39 -06:00
|
|
|
* 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/
|
|
|
|
*
|
2005-04-16 16:20:36 -06:00
|
|
|
*/
|
|
|
|
|
|
|
|
#ifndef __LINUX_ATA_H__
|
|
|
|
#define __LINUX_ATA_H__
|
|
|
|
|
2009-04-02 08:37:25 -06:00
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/string.h>
|
2005-04-16 16:20:36 -06:00
|
|
|
#include <linux/types.h>
|
2008-10-10 14:39:31 -06:00
|
|
|
#include <asm/byteorder.h>
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/* 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,
|
2007-04-01 21:34:15 -06:00
|
|
|
ATA_MAX_SECTORS_128 = 128,
|
2006-06-11 07:59:27 -06:00
|
|
|
ATA_MAX_SECTORS = 256,
|
|
|
|
ATA_MAX_SECTORS_LBA48 = 65535,/* TODO: 65536? */
|
2007-10-30 09:44:35 -06:00
|
|
|
ATA_MAX_SECTORS_TAPE = 65535,
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
ATA_ID_WORDS = 256,
|
2008-08-18 13:40:05 -06:00
|
|
|
ATA_ID_CONFIG = 0,
|
|
|
|
ATA_ID_CYLS = 1,
|
|
|
|
ATA_ID_HEADS = 3,
|
|
|
|
ATA_ID_SECTORS = 6,
|
2007-01-02 04:18:49 -07:00
|
|
|
ATA_ID_SERNO = 10,
|
2008-08-18 13:40:05 -06:00
|
|
|
ATA_ID_BUF_SIZE = 21,
|
2007-01-02 04:18:49 -07:00
|
|
|
ATA_ID_FW_REV = 23,
|
|
|
|
ATA_ID_PROD = 27,
|
2008-08-18 13:40:05 -06:00
|
|
|
ATA_ID_MAX_MULTSECT = 47,
|
|
|
|
ATA_ID_DWORD_IO = 48,
|
|
|
|
ATA_ID_CAPABILITY = 49,
|
2005-10-21 16:46:32 -06:00
|
|
|
ATA_ID_OLD_PIO_MODES = 51,
|
2008-08-18 13:40:05 -06:00
|
|
|
ATA_ID_OLD_DMA_MODES = 52,
|
2005-10-21 16:46:32 -06:00
|
|
|
ATA_ID_FIELD_VALID = 53,
|
2008-08-18 13:40:05 -06:00
|
|
|
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,
|
2005-04-16 16:20:36 -06:00
|
|
|
ATA_ID_MWDMA_MODES = 63,
|
2005-10-21 16:46:32 -06:00
|
|
|
ATA_ID_PIO_MODES = 64,
|
|
|
|
ATA_ID_EIDE_DMA_MIN = 65,
|
2008-08-18 13:40:05 -06:00
|
|
|
ATA_ID_EIDE_DMA_TIME = 66,
|
2005-10-21 16:46:32 -06:00
|
|
|
ATA_ID_EIDE_PIO = 67,
|
|
|
|
ATA_ID_EIDE_PIO_IORDY = 68,
|
2009-11-26 20:46:03 -07:00
|
|
|
ATA_ID_ADDITIONAL_SUPP = 69,
|
2008-08-18 13:40:05 -06:00
|
|
|
ATA_ID_QUEUE_DEPTH = 75,
|
2005-10-21 16:46:32 -06:00
|
|
|
ATA_ID_MAJOR_VER = 80,
|
2008-08-18 13:40:05 -06:00
|
|
|
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,
|
2009-11-17 08:00:47 -07:00
|
|
|
ATA_ID_SECTOR_SIZE = 106,
|
2008-08-18 13:40:05 -06:00
|
|
|
ATA_ID_LAST_LUN = 126,
|
|
|
|
ATA_ID_DLF = 128,
|
|
|
|
ATA_ID_CSFO = 129,
|
|
|
|
ATA_ID_CFA_POWER = 160,
|
2009-03-05 09:20:55 -07:00
|
|
|
ATA_ID_CFA_KEY_MGMT = 162,
|
|
|
|
ATA_ID_CFA_MODES = 163,
|
2009-04-02 08:37:25 -06:00
|
|
|
ATA_ID_DATA_SET_MGMT = 169,
|
2008-09-24 05:05:10 -06:00
|
|
|
ATA_ID_ROT_SPEED = 217,
|
2005-04-16 16:20:36 -06:00
|
|
|
ATA_ID_PIO4 = (1 << 1),
|
|
|
|
|
2007-01-02 04:18:49 -07:00
|
|
|
ATA_ID_SERNO_LEN = 20,
|
|
|
|
ATA_ID_FW_REV_LEN = 8,
|
|
|
|
ATA_ID_PROD_LEN = 40,
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
ATA_PCI_CTL_OFS = 2,
|
2007-07-19 17:11:59 -06:00
|
|
|
|
|
|
|
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),
|
|
|
|
|
2009-03-14 14:37:48 -06:00
|
|
|
ATA_PIO4_ONLY = (1 << 4),
|
|
|
|
|
2007-08-27 11:35:22 -06:00
|
|
|
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),
|
2009-03-14 14:37:48 -06:00
|
|
|
ATA_MWDMA3 = ATA_MWDMA2 | (1 << 3),
|
|
|
|
ATA_MWDMA4 = ATA_MWDMA3 | (1 << 4),
|
2007-08-27 11:35:22 -06:00
|
|
|
|
|
|
|
ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2),
|
|
|
|
ATA_MWDMA2_ONLY = (1 << 2),
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
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?). */
|
|
|
|
|
2009-03-14 14:37:48 -06:00
|
|
|
ATA_UDMA24_ONLY = (1 << 2) | (1 << 4),
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
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 */
|
2008-08-18 13:40:05 -06:00
|
|
|
ATA_DSC = (1 << 4), /* drive seek complete */
|
2005-04-16 16:20:36 -06:00
|
|
|
ATA_DRQ = (1 << 3), /* data request i/o */
|
2008-08-18 13:40:05 -06:00
|
|
|
ATA_CORR = (1 << 2), /* corrected data error */
|
|
|
|
ATA_IDX = (1 << 1), /* index */
|
2005-04-16 16:20:36 -06:00
|
|
|
ATA_ERR = (1 << 0), /* have an error */
|
|
|
|
ATA_SRST = (1 << 2), /* software reset */
|
2006-05-15 05:58:17 -06:00
|
|
|
ATA_ICRC = (1 << 7), /* interface CRC error */
|
2008-08-18 13:40:05 -06:00
|
|
|
ATA_BBK = ATA_ICRC, /* pre-EIDE: block marked bad */
|
2006-05-15 05:58:17 -06:00
|
|
|
ATA_UNC = (1 << 6), /* uncorrectable media error */
|
2008-08-18 13:40:05 -06:00
|
|
|
ATA_MC = (1 << 5), /* media changed */
|
2006-05-15 05:58:17 -06:00
|
|
|
ATA_IDNF = (1 << 4), /* ID not found */
|
2008-08-18 13:40:05 -06:00
|
|
|
ATA_MCR = (1 << 3), /* media change requested */
|
2005-04-16 16:20:36 -06:00
|
|
|
ATA_ABORTED = (1 << 2), /* command aborted */
|
2008-08-18 13:40:05 -06:00
|
|
|
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),
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/* 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 */
|
2007-05-28 06:30:36 -06:00
|
|
|
ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */
|
2005-04-16 16:20:36 -06:00
|
|
|
ATA_CMD_CHK_POWER = 0xE5, /* check power mode */
|
2005-08-11 01:35:53 -06:00
|
|
|
ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */
|
|
|
|
ATA_CMD_IDLE = 0xE3, /* place in idle power mode */
|
2005-04-16 16:20:36 -06:00
|
|
|
ATA_CMD_EDD = 0x90, /* execute device diagnostic */
|
2009-07-14 20:43:39 -06:00
|
|
|
ATA_CMD_DOWNLOAD_MICRO = 0x92,
|
|
|
|
ATA_CMD_NOP = 0x00,
|
2005-04-16 16:20:36 -06:00
|
|
|
ATA_CMD_FLUSH = 0xE7,
|
|
|
|
ATA_CMD_FLUSH_EXT = 0xEA,
|
|
|
|
ATA_CMD_ID_ATA = 0xEC,
|
|
|
|
ATA_CMD_ID_ATAPI = 0xA1,
|
2009-07-14 20:43:39 -06:00
|
|
|
ATA_CMD_SERVICE = 0xA2,
|
2005-04-16 16:20:36 -06:00
|
|
|
ATA_CMD_READ = 0xC8,
|
|
|
|
ATA_CMD_READ_EXT = 0x25,
|
2009-07-14 20:43:39 -06:00
|
|
|
ATA_CMD_READ_QUEUED = 0x26,
|
|
|
|
ATA_CMD_READ_STREAM_EXT = 0x2B,
|
|
|
|
ATA_CMD_READ_STREAM_DMA_EXT = 0x2A,
|
2005-04-16 16:20:36 -06:00
|
|
|
ATA_CMD_WRITE = 0xCA,
|
|
|
|
ATA_CMD_WRITE_EXT = 0x35,
|
2009-07-14 20:43:39 -06:00
|
|
|
ATA_CMD_WRITE_QUEUED = 0x36,
|
|
|
|
ATA_CMD_WRITE_STREAM_EXT = 0x3B,
|
|
|
|
ATA_CMD_WRITE_STREAM_DMA_EXT = 0x3A,
|
2006-01-06 01:56:18 -07:00
|
|
|
ATA_CMD_WRITE_FUA_EXT = 0x3D,
|
2009-07-14 20:43:39 -06:00
|
|
|
ATA_CMD_WRITE_QUEUED_FUA_EXT = 0x3E,
|
2006-05-15 06:03:38 -06:00
|
|
|
ATA_CMD_FPDMA_READ = 0x60,
|
|
|
|
ATA_CMD_FPDMA_WRITE = 0x61,
|
2005-04-16 16:20:36 -06:00
|
|
|
ATA_CMD_PIO_READ = 0x20,
|
|
|
|
ATA_CMD_PIO_READ_EXT = 0x24,
|
|
|
|
ATA_CMD_PIO_WRITE = 0x30,
|
|
|
|
ATA_CMD_PIO_WRITE_EXT = 0x34,
|
2005-10-12 01:06:27 -06:00
|
|
|
ATA_CMD_READ_MULTI = 0xC4,
|
|
|
|
ATA_CMD_READ_MULTI_EXT = 0x29,
|
|
|
|
ATA_CMD_WRITE_MULTI = 0xC5,
|
|
|
|
ATA_CMD_WRITE_MULTI_EXT = 0x39,
|
2006-01-06 01:56:18 -07:00
|
|
|
ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
|
2005-04-16 16:20:36 -06:00
|
|
|
ATA_CMD_SET_FEATURES = 0xEF,
|
2007-06-07 02:01:17 -06:00
|
|
|
ATA_CMD_SET_MULTI = 0xC6,
|
2005-04-16 16:20:36 -06:00
|
|
|
ATA_CMD_PACKET = 0xA0,
|
|
|
|
ATA_CMD_VERIFY = 0x40,
|
|
|
|
ATA_CMD_VERIFY_EXT = 0x42,
|
2009-07-14 20:43:39 -06:00
|
|
|
ATA_CMD_WRITE_UNCORR_EXT = 0x45,
|
2007-10-19 04:42:56 -06:00
|
|
|
ATA_CMD_STANDBYNOW1 = 0xE0,
|
|
|
|
ATA_CMD_IDLEIMMEDIATE = 0xE1,
|
2007-10-25 03:30:36 -06:00
|
|
|
ATA_CMD_SLEEP = 0xE6,
|
2005-05-12 13:29:42 -06:00
|
|
|
ATA_CMD_INIT_DEV_PARAMS = 0x91,
|
2006-03-21 08:52:49 -07:00
|
|
|
ATA_CMD_READ_NATIVE_MAX = 0xF8,
|
|
|
|
ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
|
2007-04-10 17:23:13 -06:00
|
|
|
ATA_CMD_SET_MAX = 0xF9,
|
|
|
|
ATA_CMD_SET_MAX_EXT = 0x37,
|
2009-07-14 20:43:39 -06:00
|
|
|
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_RCV = 0x5C,
|
|
|
|
ATA_CMD_TRUSTED_RCV_DMA = 0x5D,
|
|
|
|
ATA_CMD_TRUSTED_SND = 0x5E,
|
|
|
|
ATA_CMD_TRUSTED_SND_DMA = 0x5F,
|
2007-07-01 04:05:58 -06:00
|
|
|
ATA_CMD_PMP_READ = 0xE4,
|
|
|
|
ATA_CMD_PMP_WRITE = 0xE8,
|
2007-12-14 23:04:59 -07:00
|
|
|
ATA_CMD_CONF_OVERLAY = 0xB1,
|
2009-07-14 20:43:39 -06:00
|
|
|
ATA_CMD_SEC_SET_PASS = 0xF1,
|
|
|
|
ATA_CMD_SEC_UNLOCK = 0xF2,
|
|
|
|
ATA_CMD_SEC_ERASE_PREP = 0xF3,
|
|
|
|
ATA_CMD_SEC_ERASE_UNIT = 0xF4,
|
2007-12-14 23:04:59 -07:00
|
|
|
ATA_CMD_SEC_FREEZE_LOCK = 0xF5,
|
2009-07-14 20:43:39 -06:00
|
|
|
ATA_CMD_SEC_DISABLE_PASS = 0xF6,
|
|
|
|
ATA_CMD_CONFIG_STREAM = 0x51,
|
2008-08-18 13:40:05 -06:00
|
|
|
ATA_CMD_SMART = 0xB0,
|
|
|
|
ATA_CMD_MEDIA_LOCK = 0xDE,
|
|
|
|
ATA_CMD_MEDIA_UNLOCK = 0xDF,
|
2009-04-02 08:37:25 -06:00
|
|
|
ATA_CMD_DSM = 0x06,
|
2009-07-14 20:43:39 -06:00
|
|
|
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,
|
2008-08-18 13:40:05 -06:00
|
|
|
/* marked obsolete in the ATA/ATAPI-7 spec */
|
|
|
|
ATA_CMD_RESTORE = 0x10,
|
2006-05-15 06:03:38 -06:00
|
|
|
|
|
|
|
/* READ_LOG_EXT pages */
|
|
|
|
ATA_LOG_SATA_NCQ = 0x10,
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-03-16 08:22:26 -06:00
|
|
|
/* 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,
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/* 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,
|
2006-08-10 11:52:12 -06:00
|
|
|
XFER_MW_DMA_4 = 0x24, /* CFA only */
|
|
|
|
XFER_MW_DMA_3 = 0x23, /* CFA only */
|
2005-04-16 16:20:36 -06:00
|
|
|
XFER_MW_DMA_2 = 0x22,
|
|
|
|
XFER_MW_DMA_1 = 0x21,
|
|
|
|
XFER_MW_DMA_0 = 0x20,
|
2005-09-26 05:48:41 -06:00
|
|
|
XFER_SW_DMA_2 = 0x12,
|
|
|
|
XFER_SW_DMA_1 = 0x11,
|
|
|
|
XFER_SW_DMA_0 = 0x10,
|
2006-08-10 11:52:12 -06:00
|
|
|
XFER_PIO_6 = 0x0E, /* CFA only */
|
|
|
|
XFER_PIO_5 = 0x0D, /* CFA only */
|
2005-04-16 16:20:36 -06:00
|
|
|
XFER_PIO_4 = 0x0C,
|
|
|
|
XFER_PIO_3 = 0x0B,
|
|
|
|
XFER_PIO_2 = 0x0A,
|
|
|
|
XFER_PIO_1 = 0x09,
|
|
|
|
XFER_PIO_0 = 0x08,
|
|
|
|
XFER_PIO_SLOW = 0x00,
|
|
|
|
|
2006-06-11 22:01:34 -06:00
|
|
|
SETFEATURES_WC_ON = 0x02, /* Enable write cache */
|
|
|
|
SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
|
|
|
|
|
2008-08-18 13:40:05 -06:00
|
|
|
/* Enable/Disable Automatic Acoustic Management */
|
|
|
|
SETFEATURES_AAM_ON = 0x42,
|
|
|
|
SETFEATURES_AAM_OFF = 0xC2,
|
|
|
|
|
libata: Handle drives that require a spin-up command before first access
(S)ATA drives can be configured for "power-up in standby",
a mode whereby a specific "spin up now!" command is required
before the first media access.
Currently, a drive with this feature enabled can not be used at all
with libata, and once in this mode, the drive becomes a doorstop.
The older drivers/ide subsystem at least enumerates the drive,
so that it can be woken up after the fact from a userspace HDIO_*
command, but not libata.
This patch adds support to libata for the "power-up in standby"
mode where a "spin up now!" command (SET_FEATURES) is needed.
With this, libata will recognize such drives, spin them up,
and then re-IDENTIFY them if necessary to get a full/complete
set of drive features data.
Drives in this state are determined by looking for
special values in id[2], as documented in the current ATA specs.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-17 16:26:07 -06:00
|
|
|
SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
|
|
|
|
|
2007-08-15 01:57:11 -06:00
|
|
|
SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
|
|
|
|
SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
|
|
|
|
|
|
|
|
/* SETFEATURE Sector counts for SATA features */
|
2009-09-15 13:17:02 -06:00
|
|
|
SATA_FPDMA_OFFSET = 0x01, /* FPDMA non-zero buffer offsets */
|
2009-09-15 13:16:04 -06:00
|
|
|
SATA_FPDMA_AA = 0x02, /* FPDMA Setup FIS Auto-Activate */
|
|
|
|
SATA_DIPM = 0x03, /* Device Initiated Power Management */
|
2009-09-15 13:17:02 -06:00
|
|
|
SATA_FPDMA_IN_ORDER = 0x04, /* FPDMA in-order data delivery */
|
2009-09-15 13:16:04 -06:00
|
|
|
SATA_AN = 0x05, /* Asynchronous Notification */
|
2009-09-15 13:17:02 -06:00
|
|
|
SATA_SSP = 0x06, /* Software Settings Preservation */
|
2007-08-15 01:57:11 -06:00
|
|
|
|
2007-12-14 23:04:59 -07:00
|
|
|
/* 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,
|
|
|
|
|
2008-08-18 13:40:05 -06:00
|
|
|
/* feature values for SMART */
|
|
|
|
ATA_SMART_ENABLE = 0xD8,
|
|
|
|
ATA_SMART_READ_VALUES = 0xD0,
|
|
|
|
ATA_SMART_READ_THRESHOLDS = 0xD1,
|
|
|
|
|
2009-04-02 08:37:25 -06:00
|
|
|
/* feature values for Data Set Management */
|
|
|
|
ATA_DSM_TRIM = 0x01,
|
|
|
|
|
2008-08-18 13:40:05 -06:00
|
|
|
/* password used in LBA Mid / LBA High for executing SMART commands */
|
|
|
|
ATA_SMART_LBAM_PASS = 0x4F,
|
|
|
|
ATA_SMART_LBAH_PASS = 0xC2,
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/* ATAPI stuff */
|
|
|
|
ATAPI_PKT_DMA = (1 << 0),
|
|
|
|
ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
|
|
|
|
0=to device, 1=to host */
|
|
|
|
ATAPI_CDB_LEN = 16,
|
|
|
|
|
2007-07-01 04:05:58 -06:00
|
|
|
/* 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),
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/* cable types */
|
|
|
|
ATA_CBL_NONE = 0,
|
|
|
|
ATA_CBL_PATA40 = 1,
|
|
|
|
ATA_CBL_PATA80 = 2,
|
2007-11-27 03:43:48 -07:00
|
|
|
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,
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/* SATA Status and Control Registers */
|
|
|
|
SCR_STATUS = 0,
|
|
|
|
SCR_ERROR = 1,
|
|
|
|
SCR_CONTROL = 2,
|
|
|
|
SCR_ACTIVE = 3,
|
|
|
|
SCR_NOTIFICATION = 4,
|
|
|
|
|
2006-05-15 05:58:17 -06:00
|
|
|
/* 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 */
|
2007-10-02 09:22:02 -06:00
|
|
|
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 */
|
2006-05-15 05:58:17 -06:00
|
|
|
SERR_DEV_XCHG = (1 << 26), /* device exchanged */
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/* struct ata_taskfile flags */
|
|
|
|
ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
|
|
|
|
ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
|
|
|
|
ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
|
|
|
|
ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
|
2005-05-12 13:29:42 -06:00
|
|
|
ATA_TFLAG_LBA = (1 << 4), /* enable LBA */
|
2006-01-06 01:56:18 -07:00
|
|
|
ATA_TFLAG_FUA = (1 << 5), /* enable FUA */
|
2006-01-17 08:29:06 -07:00
|
|
|
ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */
|
2007-11-27 03:28:53 -07:00
|
|
|
|
|
|
|
/* protocol flags */
|
|
|
|
ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */
|
|
|
|
ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */
|
|
|
|
ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA,
|
|
|
|
ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */
|
|
|
|
ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */
|
2005-04-16 16:20:36 -06:00
|
|
|
};
|
|
|
|
|
|
|
|
enum ata_tf_protocols {
|
|
|
|
/* ATA taskfile protocols */
|
|
|
|
ATA_PROT_UNKNOWN, /* unknown/invalid */
|
|
|
|
ATA_PROT_NODATA, /* no data */
|
2007-06-07 01:49:22 -06:00
|
|
|
ATA_PROT_PIO, /* PIO data xfer */
|
2005-04-16 16:20:36 -06:00
|
|
|
ATA_PROT_DMA, /* DMA */
|
2006-05-15 06:03:38 -06:00
|
|
|
ATA_PROT_NCQ, /* NCQ */
|
2007-12-18 14:34:43 -07:00
|
|
|
ATAPI_PROT_NODATA, /* packet command, no data */
|
|
|
|
ATAPI_PROT_PIO, /* packet command, PIO data xfer*/
|
|
|
|
ATAPI_PROT_DMA, /* packet command with special DMA sauce */
|
2005-04-16 16:20:36 -06:00
|
|
|
};
|
|
|
|
|
|
|
|
enum ata_ioctls {
|
|
|
|
ATA_IOC_GET_IO32 = 0x309,
|
|
|
|
ATA_IOC_SET_IO32 = 0x324,
|
|
|
|
};
|
|
|
|
|
|
|
|
/* core structures */
|
|
|
|
|
|
|
|
struct ata_prd {
|
2007-12-30 02:32:22 -07:00
|
|
|
__le32 addr;
|
|
|
|
__le32 flags_len;
|
2005-04-16 16:20:36 -06:00
|
|
|
};
|
|
|
|
|
|
|
|
struct ata_taskfile {
|
|
|
|
unsigned long flags; /* ATA_TFLAG_xxx */
|
|
|
|
u8 protocol; /* ATA_PROT_xxx */
|
|
|
|
|
|
|
|
u8 ctl; /* control reg */
|
|
|
|
|
|
|
|
u8 hob_feature; /* additional data */
|
|
|
|
u8 hob_nsect; /* to support LBA48 */
|
|
|
|
u8 hob_lbal;
|
|
|
|
u8 hob_lbam;
|
|
|
|
u8 hob_lbah;
|
|
|
|
|
|
|
|
u8 feature;
|
|
|
|
u8 nsect;
|
|
|
|
u8 lbal;
|
|
|
|
u8 lbam;
|
|
|
|
u8 lbah;
|
|
|
|
|
|
|
|
u8 device;
|
|
|
|
|
|
|
|
u8 command; /* IO operation */
|
|
|
|
};
|
|
|
|
|
2007-11-27 03:28:53 -07:00
|
|
|
/*
|
|
|
|
* protocol tests
|
|
|
|
*/
|
|
|
|
static inline unsigned int ata_prot_flags(u8 prot)
|
|
|
|
{
|
|
|
|
switch (prot) {
|
|
|
|
case ATA_PROT_NODATA:
|
|
|
|
return 0;
|
|
|
|
case ATA_PROT_PIO:
|
|
|
|
return ATA_PROT_FLAG_PIO;
|
|
|
|
case ATA_PROT_DMA:
|
|
|
|
return ATA_PROT_FLAG_DMA;
|
|
|
|
case ATA_PROT_NCQ:
|
|
|
|
return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
|
2007-12-18 14:34:43 -07:00
|
|
|
case ATAPI_PROT_NODATA:
|
2007-11-27 03:28:53 -07:00
|
|
|
return ATA_PROT_FLAG_ATAPI;
|
2007-12-18 14:34:43 -07:00
|
|
|
case ATAPI_PROT_PIO:
|
2007-11-27 03:28:53 -07:00
|
|
|
return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO;
|
2007-12-18 14:34:43 -07:00
|
|
|
case ATAPI_PROT_DMA:
|
2007-11-27 03:28:53 -07:00
|
|
|
return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int ata_is_atapi(u8 prot)
|
|
|
|
{
|
|
|
|
return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int ata_is_nodata(u8 prot)
|
|
|
|
{
|
|
|
|
return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int ata_is_pio(u8 prot)
|
|
|
|
{
|
|
|
|
return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int ata_is_dma(u8 prot)
|
|
|
|
{
|
|
|
|
return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int ata_is_ncq(u8 prot)
|
|
|
|
{
|
|
|
|
return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int ata_is_data(u8 prot)
|
|
|
|
{
|
|
|
|
return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* id tests
|
|
|
|
*/
|
2008-08-18 13:40:05 -06:00
|
|
|
#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))
|
2006-05-15 06:03:38 -06:00
|
|
|
#define ata_id_has_ncq(id) ((id)[76] & (1 << 8))
|
2008-08-18 13:40:05 -06:00
|
|
|
#define ata_id_queue_depth(id) (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1)
|
|
|
|
#define ata_id_removeable(id) ((id)[ATA_ID_CONFIG] & (1 << 7))
|
2007-09-22 22:14:11 -06:00
|
|
|
#define ata_id_has_atapi_AN(id) \
|
2007-08-15 01:57:11 -06:00
|
|
|
( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \
|
|
|
|
((id)[78] & (1 << 5)) )
|
2009-07-26 19:24:35 -06:00
|
|
|
#define ata_id_has_fpdma_aa(id) \
|
|
|
|
( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \
|
|
|
|
((id)[78] & (1 << 2)) )
|
2008-08-18 13:40:05 -06:00
|
|
|
#define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10))
|
|
|
|
#define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11))
|
2005-04-16 16:20:36 -06:00
|
|
|
#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]) )
|
|
|
|
|
2008-08-18 13:40:05 -06:00
|
|
|
#define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20)
|
2005-09-27 03:38:03 -06:00
|
|
|
|
2007-10-24 22:58:59 -06:00
|
|
|
static inline bool ata_id_has_hipm(const u16 *id)
|
|
|
|
{
|
|
|
|
u16 val = id[76];
|
|
|
|
|
|
|
|
if (val == 0 || val == 0xffff)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
return val & (1 << 9);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline bool ata_id_has_dipm(const u16 *id)
|
|
|
|
{
|
|
|
|
u16 val = id[78];
|
|
|
|
|
|
|
|
if (val == 0 || val == 0xffff)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
return val & (1 << 3);
|
|
|
|
}
|
|
|
|
|
2007-11-04 20:05:49 -07:00
|
|
|
|
2007-08-22 16:31:43 -06:00
|
|
|
static inline int ata_id_has_fua(const u16 *id)
|
|
|
|
{
|
2008-08-18 13:40:05 -06:00
|
|
|
if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000)
|
2007-08-22 16:31:43 -06:00
|
|
|
return 0;
|
2008-08-18 13:40:05 -06:00
|
|
|
return id[ATA_ID_CFSSE] & (1 << 6);
|
2007-08-22 16:31:43 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static inline int ata_id_has_flush(const u16 *id)
|
|
|
|
{
|
2008-08-18 13:40:05 -06:00
|
|
|
if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
|
2007-08-22 16:31:43 -06:00
|
|
|
return 0;
|
2008-08-18 13:40:05 -06:00
|
|
|
return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
|
2007-08-22 16:31:43 -06:00
|
|
|
}
|
|
|
|
|
2008-10-10 14:39:30 -06:00
|
|
|
static inline int ata_id_flush_enabled(const u16 *id)
|
|
|
|
{
|
|
|
|
if (ata_id_has_flush(id) == 0)
|
|
|
|
return 0;
|
|
|
|
if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
|
|
|
|
return 0;
|
|
|
|
return id[ATA_ID_CFS_ENABLE_2] & (1 << 12);
|
|
|
|
}
|
|
|
|
|
2007-08-22 16:31:43 -06:00
|
|
|
static inline int ata_id_has_flush_ext(const u16 *id)
|
|
|
|
{
|
2008-08-18 13:40:05 -06:00
|
|
|
if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
|
2007-08-22 16:31:43 -06:00
|
|
|
return 0;
|
2008-08-18 13:40:05 -06:00
|
|
|
return id[ATA_ID_COMMAND_SET_2] & (1 << 13);
|
2007-08-22 16:31:43 -06:00
|
|
|
}
|
|
|
|
|
2008-10-10 14:39:31 -06:00
|
|
|
static inline int ata_id_flush_ext_enabled(const u16 *id)
|
|
|
|
{
|
|
|
|
if (ata_id_has_flush_ext(id) == 0)
|
|
|
|
return 0;
|
|
|
|
if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
|
|
|
|
return 0;
|
|
|
|
/*
|
|
|
|
* some Maxtor disks have bit 13 defined incorrectly
|
|
|
|
* so check bit 10 too
|
|
|
|
*/
|
|
|
|
return (id[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400;
|
|
|
|
}
|
|
|
|
|
2009-11-17 08:00:47 -07:00
|
|
|
static inline int ata_id_has_large_logical_sectors(const u16 *id)
|
|
|
|
{
|
|
|
|
if ((id[ATA_ID_SECTOR_SIZE] & 0xc000) != 0x4000)
|
|
|
|
return 0;
|
|
|
|
return id[ATA_ID_SECTOR_SIZE] & (1 << 13);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline u8 ata_id_logical_per_physical_sectors(const u16 *id)
|
|
|
|
{
|
|
|
|
return id[ATA_ID_SECTOR_SIZE] & 0xf;
|
|
|
|
}
|
|
|
|
|
2007-08-22 16:31:43 -06:00
|
|
|
static inline int ata_id_has_lba48(const u16 *id)
|
|
|
|
{
|
2008-08-18 13:40:05 -06:00
|
|
|
if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
|
2007-08-22 16:31:43 -06:00
|
|
|
return 0;
|
2008-08-18 13:40:05 -06:00
|
|
|
if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2))
|
2007-10-29 14:21:37 -06:00
|
|
|
return 0;
|
2008-08-18 13:40:05 -06:00
|
|
|
return id[ATA_ID_COMMAND_SET_2] & (1 << 10);
|
2007-08-22 16:31:43 -06:00
|
|
|
}
|
|
|
|
|
2008-10-10 14:39:30 -06:00
|
|
|
static inline int ata_id_lba48_enabled(const u16 *id)
|
|
|
|
{
|
|
|
|
if (ata_id_has_lba48(id) == 0)
|
|
|
|
return 0;
|
|
|
|
if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
|
|
|
|
return 0;
|
|
|
|
return id[ATA_ID_CFS_ENABLE_2] & (1 << 10);
|
|
|
|
}
|
|
|
|
|
2007-08-22 16:31:43 -06:00
|
|
|
static inline int ata_id_hpa_enabled(const u16 *id)
|
|
|
|
{
|
|
|
|
/* Yes children, word 83 valid bits cover word 82 data */
|
2008-08-18 13:40:05 -06:00
|
|
|
if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
|
2007-08-22 16:31:43 -06:00
|
|
|
return 0;
|
|
|
|
/* And 87 covers 85-87 */
|
2008-08-18 13:40:05 -06:00
|
|
|
if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
|
2007-08-22 16:31:43 -06:00
|
|
|
return 0;
|
|
|
|
/* Check command sets enabled as well as supported */
|
2008-08-18 13:40:05 -06:00
|
|
|
if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0)
|
2007-08-22 16:31:43 -06:00
|
|
|
return 0;
|
2008-08-18 13:40:05 -06:00
|
|
|
return id[ATA_ID_COMMAND_SET_1] & (1 << 10);
|
2007-08-22 16:31:43 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static inline int ata_id_has_wcache(const u16 *id)
|
|
|
|
{
|
|
|
|
/* Yes children, word 83 valid bits cover word 82 data */
|
2008-08-18 13:40:05 -06:00
|
|
|
if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
|
2007-08-22 16:31:43 -06:00
|
|
|
return 0;
|
2008-08-18 13:40:05 -06:00
|
|
|
return id[ATA_ID_COMMAND_SET_1] & (1 << 5);
|
2007-08-22 16:31:43 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static inline int ata_id_has_pm(const u16 *id)
|
|
|
|
{
|
2008-08-18 13:40:05 -06:00
|
|
|
if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
|
2007-08-22 16:31:43 -06:00
|
|
|
return 0;
|
2008-08-18 13:40:05 -06:00
|
|
|
return id[ATA_ID_COMMAND_SET_1] & (1 << 3);
|
2007-08-22 16:31:43 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static inline int ata_id_rahead_enabled(const u16 *id)
|
|
|
|
{
|
2008-08-18 13:40:05 -06:00
|
|
|
if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
|
2007-08-22 16:31:43 -06:00
|
|
|
return 0;
|
2008-08-18 13:40:05 -06:00
|
|
|
return id[ATA_ID_CFS_ENABLE_1] & (1 << 6);
|
2007-08-22 16:31:43 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static inline int ata_id_wcache_enabled(const u16 *id)
|
|
|
|
{
|
2008-08-18 13:40:05 -06:00
|
|
|
if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
|
2007-08-22 16:31:43 -06:00
|
|
|
return 0;
|
2008-08-18 13:40:05 -06:00
|
|
|
return id[ATA_ID_CFS_ENABLE_1] & (1 << 5);
|
2007-08-22 16:31:43 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* 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
|
2007-10-19 04:42:56 -06:00
|
|
|
* reliably report on drives below ATA3.
|
2007-08-22 16:31:43 -06:00
|
|
|
*/
|
|
|
|
|
2006-02-12 06:47:04 -07:00
|
|
|
static inline unsigned int ata_id_major_version(const u16 *id)
|
|
|
|
{
|
|
|
|
unsigned int mver;
|
|
|
|
|
2006-08-10 11:52:12 -06:00
|
|
|
if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
|
|
|
|
return 0;
|
|
|
|
|
2006-02-12 06:47:04 -07:00
|
|
|
for (mver = 14; mver >= 1; mver--)
|
|
|
|
if (id[ATA_ID_MAJOR_VER] & (1 << mver))
|
|
|
|
break;
|
|
|
|
return mver;
|
|
|
|
}
|
|
|
|
|
2007-02-21 04:25:08 -07:00
|
|
|
static inline int ata_id_is_sata(const u16 *id)
|
|
|
|
{
|
2008-10-10 14:39:30 -06:00
|
|
|
/*
|
|
|
|
* 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 1;
|
|
|
|
return 0;
|
2007-02-21 04:25:08 -07:00
|
|
|
}
|
|
|
|
|
2007-11-04 20:05:49 -07:00
|
|
|
static inline int ata_id_has_tpm(const u16 *id)
|
|
|
|
{
|
|
|
|
/* The TPM bits are only valid on ATA8 */
|
|
|
|
if (ata_id_major_version(id) < 8)
|
|
|
|
return 0;
|
|
|
|
if ((id[48] & 0xC000) != 0x4000)
|
|
|
|
return 0;
|
|
|
|
return id[48] & (1 << 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int ata_id_has_dword_io(const u16 *id)
|
|
|
|
{
|
|
|
|
/* ATA 8 reuses this flag for "trusted" computing */
|
|
|
|
if (ata_id_major_version(id) > 7)
|
|
|
|
return 0;
|
2008-08-18 13:40:05 -06:00
|
|
|
if (id[ATA_ID_DWORD_IO] & (1 << 0))
|
2007-11-04 20:05:49 -07:00
|
|
|
return 1;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2008-09-19 15:46:01 -06:00
|
|
|
static inline int 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 1;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-05-14 22:40:35 -06:00
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2009-04-02 08:37:25 -06:00
|
|
|
static inline int ata_id_has_trim(const u16 *id)
|
|
|
|
{
|
|
|
|
if (ata_id_major_version(id) >= 7 &&
|
|
|
|
(id[ATA_ID_DATA_SET_MGMT] & 1))
|
|
|
|
return 1;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-11-26 20:46:03 -07:00
|
|
|
static inline int 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 1;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2005-10-22 12:27:05 -06:00
|
|
|
static inline int ata_id_current_chs_valid(const u16 *id)
|
2005-05-12 13:29:42 -06:00
|
|
|
{
|
2006-08-30 22:02:15 -06:00
|
|
|
/* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
|
|
|
|
has not been issued to the device then the values of
|
2008-08-18 13:40:05 -06:00
|
|
|
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 */
|
2005-05-12 13:29:42 -06:00
|
|
|
}
|
|
|
|
|
2006-08-10 11:52:12 -06:00
|
|
|
static inline int ata_id_is_cfa(const u16 *id)
|
|
|
|
{
|
2009-02-01 09:46:39 -07:00
|
|
|
if (id[ATA_ID_CONFIG] == 0x848A) /* Traditional CF */
|
2006-08-10 11:52:12 -06:00
|
|
|
return 1;
|
2009-02-01 09:46:39 -07:00
|
|
|
/*
|
|
|
|
* 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...
|
|
|
|
*/
|
|
|
|
if ((id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004)
|
2006-08-10 11:52:12 -06:00
|
|
|
return 1;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2008-09-24 05:05:10 -06:00
|
|
|
static inline int ata_id_is_ssd(const u16 *id)
|
|
|
|
{
|
|
|
|
return id[ATA_ID_ROT_SPEED] == 0x01;
|
|
|
|
}
|
|
|
|
|
2009-06-15 10:52:52 -06:00
|
|
|
static inline int 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 0;
|
|
|
|
/* For PIO3 and higher it is mandatory. */
|
|
|
|
if (pio > 2)
|
|
|
|
return 1;
|
|
|
|
/* Turn it on when possible. */
|
|
|
|
if (ata_id_has_iordy(id))
|
|
|
|
return 1;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2006-10-10 15:28:11 -06:00
|
|
|
static inline int ata_drive_40wire(const u16 *dev_id)
|
|
|
|
{
|
2007-02-21 04:25:08 -07:00
|
|
|
if (ata_id_is_sata(dev_id))
|
2006-10-10 15:28:11 -06:00
|
|
|
return 0; /* SATA */
|
2008-08-18 13:40:05 -06:00
|
|
|
if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000)
|
2006-10-10 15:28:11 -06:00
|
|
|
return 0; /* 80 wire */
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2007-11-05 15:58:58 -07:00
|
|
|
static inline int ata_drive_40wire_relaxed(const u16 *dev_id)
|
|
|
|
{
|
2008-08-18 13:40:05 -06:00
|
|
|
if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000)
|
2007-11-05 15:58:58 -07:00
|
|
|
return 0; /* 80 wire */
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2005-10-22 12:27:05 -06:00
|
|
|
static inline int atapi_cdb_len(const u16 *dev_id)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2008-08-18 13:40:05 -06:00
|
|
|
u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3;
|
2005-04-16 16:20:36 -06:00
|
|
|
switch (tmp) {
|
|
|
|
case 0: return 12;
|
|
|
|
case 1: return 16;
|
|
|
|
default: return -1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2007-10-30 09:44:35 -06:00
|
|
|
static inline int atapi_command_packet_set(const u16 *dev_id)
|
|
|
|
{
|
2008-08-18 13:40:05 -06:00
|
|
|
return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f;
|
2007-10-30 09:44:35 -06:00
|
|
|
}
|
|
|
|
|
2008-02-20 21:25:50 -07:00
|
|
|
static inline int atapi_id_dmadir(const u16 *dev_id)
|
|
|
|
{
|
|
|
|
return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
|
|
|
|
}
|
|
|
|
|
2008-10-10 14:39:31 -06:00
|
|
|
/*
|
|
|
|
* 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 int 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 1;
|
|
|
|
|
|
|
|
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 1;
|
|
|
|
|
|
|
|
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 1;
|
|
|
|
|
|
|
|
/* 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 1; /* LBA capacity is (now) good */
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0; /* LBA capacity value may be bad */
|
|
|
|
}
|
|
|
|
|
2008-10-10 14:39:31 -06:00
|
|
|
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
|
|
|
|
}
|
|
|
|
|
2009-04-02 08:37:25 -06:00
|
|
|
/*
|
2009-11-26 10:00:43 -07:00
|
|
|
* 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.
|
2009-04-02 08:37:25 -06:00
|
|
|
*/
|
2009-11-26 10:00:43 -07:00
|
|
|
static inline unsigned ata_set_lba_range_entries(void *_buffer,
|
|
|
|
unsigned buf_size, u64 sector, unsigned long count)
|
2009-04-02 08:37:25 -06:00
|
|
|
{
|
|
|
|
__le64 *buffer = _buffer;
|
2009-11-26 10:00:43 -07:00
|
|
|
unsigned i = 0, used_bytes;
|
2009-04-02 08:37:25 -06:00
|
|
|
|
2009-11-26 10:00:43 -07:00
|
|
|
while (i < buf_size / 8 ) { /* 6-byte LBA + 2-byte range per entry */
|
2009-04-02 08:37:25 -06:00
|
|
|
u64 entry = sector |
|
|
|
|
((u64)(count > 0xffff ? 0xffff : count) << 48);
|
|
|
|
buffer[i++] = __cpu_to_le64(entry);
|
|
|
|
if (count <= 0xffff)
|
|
|
|
break;
|
|
|
|
count -= 0xffff;
|
|
|
|
sector += 0xffff;
|
|
|
|
}
|
|
|
|
|
2009-11-26 10:00:43 -07:00
|
|
|
used_bytes = ALIGN(i * 8, 512);
|
|
|
|
memset(buffer + i, 0, used_bytes - i * 8);
|
|
|
|
return used_bytes;
|
2009-04-02 08:37:25 -06:00
|
|
|
}
|
|
|
|
|
2005-11-01 04:33:20 -07:00
|
|
|
static inline int is_multi_taskfile(struct ata_taskfile *tf)
|
|
|
|
{
|
|
|
|
return (tf->command == ATA_CMD_READ_MULTI) ||
|
|
|
|
(tf->command == ATA_CMD_WRITE_MULTI) ||
|
|
|
|
(tf->command == ATA_CMD_READ_MULTI_EXT) ||
|
2006-03-02 19:34:05 -07:00
|
|
|
(tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
|
|
|
|
(tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
|
2005-11-01 04:33:20 -07:00
|
|
|
}
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
static inline int ata_ok(u8 status)
|
|
|
|
{
|
|
|
|
return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
|
|
|
|
== ATA_DRDY);
|
|
|
|
}
|
|
|
|
|
2005-10-12 01:12:26 -06:00
|
|
|
static inline int lba_28_ok(u64 block, u32 n_block)
|
|
|
|
{
|
|
|
|
/* check the ending block number */
|
[libata] LBA28/LBA48 off-by-one bug in ata.h
I recently bought 3 HGST P7K500-series 500GB SATA drives and
had trouble accessing the block right on the LBA28-LBA48 border.
Here's how it fails (same for all 3 drives):
# dd if=/dev/sdc bs=512 count=1 skip=268435455 > /dev/null
dd: reading `/dev/sdc': Input/output error
0+0 records in
0+0 records out
0 bytes (0 B) copied, 0.288033 seconds, 0.0 kB/s
# dmesg
ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
ata1.00: BMDMA stat 0x25
ata1.00: cmd c8/00:08:f8:ff:ff/00:00:00:00:00/ef tag 0 dma 4096 in
res 51/04:08:f8:ff:ff/00:00:00:00:00/ef Emask 0x1 (device error)
ata1.00: status: { DRDY ERR }
ata1.00: error: { ABRT }
ata1.00: configured for UDMA/33
ata1: EH complete
...
After some investigations, it turned out this seems to be caused
by misinterpretation of the ATA specification on LBA28 access.
Following part is the code in question:
=== include/linux/ata.h ===
static inline int lba_28_ok(u64 block, u32 n_block)
{
/* check the ending block number */
return ((block + n_block - 1) < ((u64)1 << 28)) && (n_block <= 256);
}
HGST drive (sometimes) fails with LBA28 access of {block = 0xfffffff,
n_block = 1}, and this behavior seems to be comformant. Other drives,
including other HGST drives are not that strict, through.
>From the ATA specification:
(http://www.t13.org/Documents/UploadedDocuments/project/d1410r3b-ATA-ATAPI-6.pdf)
8.15.29 Word (61:60): Total number of user addressable sectors
This field contains a value that is one greater than the total number
of user addressable sectors (see 6.2). The maximum value that shall
be placed in this field is 0FFFFFFFh.
So the driver shouldn't use the value of 0xfffffff for LBA28 request
as this exceeds maximum user addressable sector. The logical maximum
value for LBA28 is 0xffffffe.
The obvious fix is to cut "- 1" part, and the patch attached just do
that. I've been using the patched kernel for about a month now, and
the same fix is also floating on the net for some time. So I believe
this fix works reliably.
Just FYI, many Windows/Intel platform users also seems to be struck
by this, and HGST has issued a note pointing to Intel ICH8/9 driver.
"28-bit LBA command is being used to access LBAs 29-bits in length"
http://www.hitachigst.com/hddt/knowtree.nsf/cffe836ed7c12018862565b000530c74/b531b8bce8745fb78825740f00580e23
Also, *BSDs seems to have similar fix included sometime around ~2004,
through I have not checked out exact portion of the code.
Signed-off-by: Taisuke Yamada <tai@rakugaki.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-09-13 14:46:15 -06:00
|
|
|
return ((block + n_block) < ((u64)1 << 28)) && (n_block <= 256);
|
2005-10-12 01:12:26 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static inline int lba_48_ok(u64 block, u32 n_block)
|
|
|
|
{
|
|
|
|
/* check the ending block number */
|
|
|
|
return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
|
|
|
|
}
|
|
|
|
|
2007-07-01 04:05:58 -06:00
|
|
|
#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)
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
#endif /* __LINUX_ATA_H__ */
|