| |
| /* |
| * 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/types.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_LBA48 = 65535,/* TODO: 65536? */ |
| |
| ATA_ID_WORDS = 256, |
| ATA_ID_SERNO = 10, |
| ATA_ID_FW_REV = 23, |
| ATA_ID_PROD = 27, |
| ATA_ID_OLD_PIO_MODES = 51, |
| ATA_ID_FIELD_VALID = 53, |
| ATA_ID_MWDMA_MODES = 63, |
| ATA_ID_PIO_MODES = 64, |
| ATA_ID_EIDE_DMA_MIN = 65, |
| ATA_ID_EIDE_PIO = 67, |
| ATA_ID_EIDE_PIO_IORDY = 68, |
| ATA_ID_UDMA_MODES = 88, |
| ATA_ID_MAJOR_VER = 80, |
| ATA_ID_PIO4 = (1 << 1), |
| |
| ATA_ID_SERNO_LEN = 20, |
| ATA_ID_FW_REV_LEN = 8, |
| ATA_ID_PROD_LEN = 40, |
| |
| 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_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_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_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_DRQ = (1 << 3), /* data request i/o */ |
| ATA_ERR = (1 << 0), /* have an error */ |
| ATA_SRST = (1 << 2), /* software reset */ |
| ATA_ICRC = (1 << 7), /* interface CRC error */ |
| ATA_UNC = (1 << 6), /* uncorrectable media error */ |
| ATA_IDNF = (1 << 4), /* ID not found */ |
| ATA_ABORTED = (1 << 2), /* command aborted */ |
| |
| /* 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_FLUSH = 0xE7, |
| ATA_CMD_FLUSH_EXT = 0xEA, |
| ATA_CMD_ID_ATA = 0xEC, |
| ATA_CMD_ID_ATAPI = 0xA1, |
| ATA_CMD_READ = 0xC8, |
| ATA_CMD_READ_EXT = 0x25, |
| ATA_CMD_WRITE = 0xCA, |
| ATA_CMD_WRITE_EXT = 0x35, |
| ATA_CMD_WRITE_FUA_EXT = 0x3D, |
| ATA_CMD_FPDMA_READ = 0x60, |
| ATA_CMD_FPDMA_WRITE = 0x61, |
| 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_STANDBYNOW1 = 0xE0, |
| ATA_CMD_IDLEIMMEDIATE = 0xE1, |
| 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_PMP_READ = 0xE4, |
| ATA_CMD_PMP_WRITE = 0xE8, |
| |
| /* READ_LOG_EXT pages */ |
| ATA_LOG_SATA_NCQ = 0x10, |
| |
| /* 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_SPINUP = 0x07, /* Spin-up drive */ |
| |
| 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_AN = 0x05, /* Asynchronous Notification */ |
| |
| /* 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, |
| ATA_CBL_SATA = 5, |
| |
| /* 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_DEV_XCHG = (1 << 26), /* device exchanged */ |
| |
| /* 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) */ |
| ATA_TFLAG_LBA = (1 << 4), /* enable LBA */ |
| ATA_TFLAG_FUA = (1 << 5), /* enable FUA */ |
| ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */ |
| }; |
| |
| 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_ATAPI, /* packet command, PIO data xfer*/ |
| ATA_PROT_ATAPI_NODATA, /* packet command, no data */ |
| ATA_PROT_ATAPI_DMA, /* packet command with special DMA sauce */ |
| }; |
| |
| enum ata_ioctls { |
| ATA_IOC_GET_IO32 = 0x309, |
| ATA_IOC_SET_IO32 = 0x324, |
| }; |
| |
| /* core structures */ |
| |
| struct ata_prd { |
| u32 addr; |
| u32 flags_len; |
| }; |
| |
| 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 */ |
| }; |
| |
| #define ata_id_is_ata(id) (((id)[0] & (1 << 15)) == 0) |
| #define ata_id_has_lba(id) ((id)[49] & (1 << 9)) |
| #define ata_id_has_dma(id) ((id)[49] & (1 << 8)) |
| #define ata_id_has_ncq(id) ((id)[76] & (1 << 8)) |
| #define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1) |
| #define ata_id_removeable(id) ((id)[0] & (1 << 7)) |
| #define ata_id_has_dword_io(id) ((id)[48] & (1 << 0)) |
| #define ata_id_has_atapi_AN(id) \ |
| ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \ |
| ((id)[78] & (1 << 5)) ) |
| #define ata_id_iordy_disable(id) ((id)[49] & (1 << 10)) |
| #define ata_id_has_iordy(id) ((id)[49] & (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)[0] & 0x60) == 0x20) |
| |
| static inline int ata_id_has_fua(const u16 *id) |
| { |
| if ((id[84] & 0xC000) != 0x4000) |
| return 0; |
| return id[84] & (1 << 6); |
| } |
| |
| static inline int ata_id_has_flush(const u16 *id) |
| { |
| if ((id[83] & 0xC000) != 0x4000) |
| return 0; |
| return id[83] & (1 << 12); |
| } |
| |
| static inline int ata_id_has_flush_ext(const u16 *id) |
| { |
| if ((id[83] & 0xC000) != 0x4000) |
| return 0; |
| return id[83] & (1 << 13); |
| } |
| |
| static inline int ata_id_has_lba48(const u16 *id) |
| { |
| if ((id[83] & 0xC000) != 0x4000) |
| return 0; |
| return id[83] & (1 << 10); |
| } |
| |
| static inline int ata_id_hpa_enabled(const u16 *id) |
| { |
| /* Yes children, word 83 valid bits cover word 82 data */ |
| if ((id[83] & 0xC000) != 0x4000) |
| return 0; |
| /* And 87 covers 85-87 */ |
| if ((id[87] & 0xC000) != 0x4000) |
| return 0; |
| /* Check command sets enabled as well as supported */ |
| if ((id[85] & ( 1 << 10)) == 0) |
| return 0; |
| return id[82] & (1 << 10); |
| } |
| |
| static inline int ata_id_has_wcache(const u16 *id) |
| { |
| /* Yes children, word 83 valid bits cover word 82 data */ |
| if ((id[83] & 0xC000) != 0x4000) |
| return 0; |
| return id[82] & (1 << 5); |
| } |
| |
| static inline int ata_id_has_pm(const u16 *id) |
| { |
| if ((id[83] & 0xC000) != 0x4000) |
| return 0; |
| return id[82] & (1 << 3); |
| } |
| |
| static inline int ata_id_rahead_enabled(const u16 *id) |
| { |
| if ((id[87] & 0xC000) != 0x4000) |
| return 0; |
| return id[85] & (1 << 6); |
| } |
| |
| static inline int ata_id_wcache_enabled(const u16 *id) |
| { |
| if ((id[87] & 0xC000) != 0x4000) |
| return 0; |
| return id[85] & (1 << 5); |
| } |
| |
| /** |
| * 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 int ata_id_is_sata(const u16 *id) |
| { |
| return ata_id_major_version(id) >= 5 && id[93] == 0; |
| } |
| |
| static inline int 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[54] to id[56] are vendor specific. */ |
| return (id[53] & 0x01) && /* Current translation valid */ |
| id[54] && /* cylinders in current translation */ |
| id[55] && /* heads in current translation */ |
| id[55] <= 16 && |
| id[56]; /* sectors in current translation */ |
| } |
| |
| static inline int ata_id_is_cfa(const u16 *id) |
| { |
| u16 v = id[0]; |
| if (v == 0x848A) /* Standard CF */ |
| return 1; |
| /* Could be CF hiding as standard ATA */ |
| if (ata_id_major_version(id) >= 3 && id[82] != 0xFFFF && |
| (id[82] & ( 1 << 2))) |
| return 1; |
| return 0; |
| } |
| |
| static inline int ata_drive_40wire(const u16 *dev_id) |
| { |
| if (ata_id_is_sata(dev_id)) |
| return 0; /* SATA */ |
| if ((dev_id[93] & 0xE000) == 0x6000) |
| return 0; /* 80 wire */ |
| return 1; |
| } |
| |
| static inline int atapi_cdb_len(const u16 *dev_id) |
| { |
| u16 tmp = dev_id[0] & 0x3; |
| switch (tmp) { |
| case 0: return 12; |
| case 1: return 16; |
| default: return -1; |
| } |
| } |
| |
| static inline int is_atapi_taskfile(const struct ata_taskfile *tf) |
| { |
| return (tf->protocol == ATA_PROT_ATAPI) || |
| (tf->protocol == ATA_PROT_ATAPI_NODATA) || |
| (tf->protocol == ATA_PROT_ATAPI_DMA); |
| } |
| |
| 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) || |
| (tf->command == ATA_CMD_WRITE_MULTI_EXT) || |
| (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); |
| } |
| |
| static inline int ata_ok(u8 status) |
| { |
| return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR)) |
| == ATA_DRDY); |
| } |
| |
| 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); |
| } |
| |
| 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); |
| } |
| |
| #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__ */ |