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marcus.erl |
/*
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* Copyright 2003-2005 Red Hat, Inc. All rights reserved.
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* Copyright 2003-2005 Jeff Garzik
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*
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* libata documentation is available via 'make {ps|pdf}docs',
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* as Documentation/DocBook/libata.*
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*
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*/
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#ifndef __LINUX_LIBATA_H__
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#define __LINUX_LIBATA_H__
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#include <linux/delay.h>
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#include <linux/interrupt.h>
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#include <linux/dma-mapping.h>
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#include <linux/scatterlist.h>
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#include <linux/io.h>
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#include <linux/ata.h>
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#include <linux/workqueue.h>
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#include <scsi/scsi_host.h>
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#include <linux/acpi.h>
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/*
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* Define if arch has non-standard setup. This is a _PCI_ standard
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* not a legacy or ISA standard.
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*/
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#ifdef CONFIG_ATA_NONSTANDARD
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#include <asm/libata-portmap.h>
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#else
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#include <asm-generic/libata-portmap.h>
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#endif
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/*
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* compile-time options: to be removed as soon as all the drivers are
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* converted to the new debugging mechanism
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*/
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#undef ATA_DEBUG /* debugging output */
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#undef ATA_VERBOSE_DEBUG /* yet more debugging output */
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#undef ATA_IRQ_TRAP /* define to ack screaming irqs */
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#undef ATA_NDEBUG /* define to disable quick runtime checks */
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/* note: prints function name for you */
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#ifdef ATA_DEBUG
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#define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
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#ifdef ATA_VERBOSE_DEBUG
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#define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
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#else
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#define VPRINTK(fmt, args...)
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#endif /* ATA_VERBOSE_DEBUG */
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#else
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#define DPRINTK(fmt, args...)
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#define VPRINTK(fmt, args...)
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#endif /* ATA_DEBUG */
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#define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
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/* NEW: debug levels */
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#define HAVE_LIBATA_MSG 1
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enum {
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ATA_MSG_DRV = 0x0001,
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ATA_MSG_INFO = 0x0002,
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ATA_MSG_PROBE = 0x0004,
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ATA_MSG_WARN = 0x0008,
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ATA_MSG_MALLOC = 0x0010,
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ATA_MSG_CTL = 0x0020,
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ATA_MSG_INTR = 0x0040,
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ATA_MSG_ERR = 0x0080,
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};
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#define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV)
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#define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO)
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#define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE)
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#define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN)
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#define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
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#define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL)
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#define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR)
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#define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR)
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static inline u32 ata_msg_init(int dval, int default_msg_enable_bits)
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{
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if (dval < 0 || dval >= (sizeof(u32) * 8))
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return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */
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if (!dval)
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return 0;
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return (1 << dval) - 1;
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}
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/* defines only for the constants which don't work well as enums */
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#define ATA_TAG_POISON 0xfafbfcfdU
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enum {
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/* various global constants */
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LIBATA_MAX_PRD = ATA_MAX_PRD / 2,
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LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */
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ATA_MAX_PORTS = 8,
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ATA_DEF_QUEUE = 1,
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/* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */
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ATA_MAX_QUEUE = 32,
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ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1,
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ATA_MAX_BUS = 2,
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ATA_DEF_BUSY_WAIT = 10000,
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ATA_SHORT_PAUSE = (HZ >> 6) + 1,
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ATAPI_MAX_DRAIN = 16 << 10,
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ATA_SHT_EMULATED = 1,
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ATA_SHT_CMD_PER_LUN = 1,
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ATA_SHT_THIS_ID = -1,
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ATA_SHT_USE_CLUSTERING = 1,
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/* struct ata_device stuff */
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ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */
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ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */
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ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */
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ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */
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ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */
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ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */
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ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */
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ATA_DFLAG_AN = (1 << 7), /* AN configured */
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ATA_DFLAG_HIPM = (1 << 8), /* device supports HIPM */
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ATA_DFLAG_DIPM = (1 << 9), /* device supports DIPM */
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ATA_DFLAG_CFG_MASK = (1 << 12) - 1,
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ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */
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ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */
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ATA_DFLAG_SPUNDOWN = (1 << 14), /* XXX: for spindown_compat */
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ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */
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ATA_DFLAG_INIT_MASK = (1 << 16) - 1,
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ATA_DFLAG_DETACH = (1 << 16),
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ATA_DFLAG_DETACHED = (1 << 17),
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ATA_DEV_UNKNOWN = 0, /* unknown device */
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ATA_DEV_ATA = 1, /* ATA device */
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ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */
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ATA_DEV_ATAPI = 3, /* ATAPI device */
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ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */
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ATA_DEV_PMP = 5, /* SATA port multiplier */
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ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */
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ATA_DEV_SEMB = 7, /* SEMB */
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ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */
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ATA_DEV_NONE = 9, /* no device */
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/* struct ata_link flags */
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ATA_LFLAG_HRST_TO_RESUME = (1 << 0), /* hardreset to resume link */
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ATA_LFLAG_SKIP_D2H_BSY = (1 << 1), /* can't wait for the first D2H
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* Register FIS clearing BSY */
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ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */
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ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */
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ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */
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ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB,
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ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */
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ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */
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/* struct ata_port flags */
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ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */
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/* (doesn't imply presence) */
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ATA_FLAG_SATA = (1 << 1),
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ATA_FLAG_NO_LEGACY = (1 << 2), /* no legacy mode check */
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ATA_FLAG_MMIO = (1 << 3), /* use MMIO, not PIO */
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ATA_FLAG_SRST = (1 << 4), /* (obsolete) use ATA SRST, not E.D.D. */
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ATA_FLAG_SATA_RESET = (1 << 5), /* (obsolete) use COMRESET */
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ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */
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ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */
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ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */
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ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD
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* doesn't handle PIO interrupts */
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ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */
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ATA_FLAG_DEBUGMSG = (1 << 13),
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ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */
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ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */
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ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */
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ATA_FLAG_AN = (1 << 18), /* controller supports AN */
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ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */
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ATA_FLAG_IPM = (1 << 20), /* driver can handle IPM */
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/* The following flag belongs to ap->pflags but is kept in
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* ap->flags because it's referenced in many LLDs and will be
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* removed in not-too-distant future.
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*/
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ATA_FLAG_DISABLED = (1 << 23), /* port is disabled, ignore it */
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/* bits 24:31 of ap->flags are reserved for LLD specific flags */
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/* struct ata_port pflags */
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ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */
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ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */
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ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */
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ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */
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ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */
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ATA_PFLAG_UNLOADING = (1 << 5), /* module is unloading */
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ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */
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ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */
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ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */
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ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */
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ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */
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ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */
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/* struct ata_queued_cmd flags */
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ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */
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ATA_QCFLAG_SG = (1 << 1), /* have s/g table? */
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ATA_QCFLAG_SINGLE = (1 << 2), /* no s/g, just a single buffer */
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ATA_QCFLAG_DMAMAP = ATA_QCFLAG_SG | ATA_QCFLAG_SINGLE,
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ATA_QCFLAG_IO = (1 << 3), /* standard IO command */
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ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */
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ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */
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ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */
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ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */
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ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */
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ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */
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/* host set flags */
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ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */
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ATA_HOST_STARTED = (1 << 1), /* Host started */
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/* bits 24:31 of host->flags are reserved for LLD specific flags */
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/* various lengths of time */
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ATA_TMOUT_BOOT = 30 * HZ, /* heuristic */
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ATA_TMOUT_BOOT_QUICK = 7 * HZ, /* heuristic */
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ATA_TMOUT_INTERNAL = 30 * HZ,
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ATA_TMOUT_INTERNAL_QUICK = 5 * HZ,
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/* FIXME: GoVault needs 2s but we can't afford that without
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* parallel probing. 800ms is enough for iVDR disk
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* HHD424020F7SV00. Increase to 2secs when parallel probing
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* is in place.
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*/
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ATA_TMOUT_FF_WAIT = 4 * HZ / 5,
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/* ATA bus states */
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BUS_UNKNOWN = 0,
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BUS_DMA = 1,
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BUS_IDLE = 2,
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BUS_NOINTR = 3,
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BUS_NODATA = 4,
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BUS_TIMER = 5,
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BUS_PIO = 6,
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BUS_EDD = 7,
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BUS_IDENTIFY = 8,
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BUS_PACKET = 9,
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/* SATA port states */
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PORT_UNKNOWN = 0,
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PORT_ENABLED = 1,
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PORT_DISABLED = 2,
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/* encoding various smaller bitmaps into a single
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* unsigned int bitmap
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*/
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ATA_BITS_PIO = 7,
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ATA_BITS_MWDMA = 5,
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ATA_BITS_UDMA = 8,
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ATA_SHIFT_PIO = 0,
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ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_BITS_PIO,
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ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_BITS_MWDMA,
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ATA_MASK_PIO = ((1 << ATA_BITS_PIO) - 1) << ATA_SHIFT_PIO,
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ATA_MASK_MWDMA = ((1 << ATA_BITS_MWDMA) - 1) << ATA_SHIFT_MWDMA,
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ATA_MASK_UDMA = ((1 << ATA_BITS_UDMA) - 1) << ATA_SHIFT_UDMA,
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/* size of buffer to pad xfers ending on unaligned boundaries */
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ATA_DMA_PAD_SZ = 4,
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ATA_DMA_PAD_BUF_SZ = ATA_DMA_PAD_SZ * ATA_MAX_QUEUE,
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/* ering size */
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ATA_ERING_SIZE = 32,
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/* return values for ->qc_defer */
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ATA_DEFER_LINK = 1,
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ATA_DEFER_PORT = 2,
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/* desc_len for ata_eh_info and context */
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ATA_EH_DESC_LEN = 80,
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/* reset / recovery action types */
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ATA_EH_REVALIDATE = (1 << 0),
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ATA_EH_SOFTRESET = (1 << 1),
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ATA_EH_HARDRESET = (1 << 2),
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ATA_EH_ENABLE_LINK = (1 << 3),
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|
|
ATA_EH_RESET_MASK = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
|
304 |
|
|
ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE,
|
305 |
|
|
|
306 |
|
|
/* ata_eh_info->flags */
|
307 |
|
|
ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */
|
308 |
|
|
ATA_EHI_RESUME_LINK = (1 << 1), /* resume link (reset modifier) */
|
309 |
|
|
ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */
|
310 |
|
|
ATA_EHI_QUIET = (1 << 3), /* be quiet */
|
311 |
|
|
ATA_EHI_LPM = (1 << 4), /* link power management action */
|
312 |
|
|
|
313 |
|
|
ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */
|
314 |
|
|
ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */
|
315 |
|
|
ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */
|
316 |
|
|
ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */
|
317 |
|
|
ATA_EHI_POST_SETMODE = (1 << 20), /* revaildating after setmode */
|
318 |
|
|
|
319 |
|
|
ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
|
320 |
|
|
ATA_EHI_RESET_MODIFIER_MASK = ATA_EHI_RESUME_LINK,
|
321 |
|
|
|
322 |
|
|
/* max tries if error condition is still set after ->error_handler */
|
323 |
|
|
ATA_EH_MAX_TRIES = 5,
|
324 |
|
|
|
325 |
|
|
/* how hard are we gonna try to probe/recover devices */
|
326 |
|
|
ATA_PROBE_MAX_TRIES = 3,
|
327 |
|
|
ATA_EH_DEV_TRIES = 3,
|
328 |
|
|
ATA_EH_PMP_TRIES = 5,
|
329 |
|
|
ATA_EH_PMP_LINK_TRIES = 3,
|
330 |
|
|
|
331 |
|
|
SATA_PMP_SCR_TIMEOUT = 250,
|
332 |
|
|
|
333 |
|
|
/* Horkage types. May be set by libata or controller on drives
|
334 |
|
|
(some horkage may be drive/controller pair dependant */
|
335 |
|
|
|
336 |
|
|
ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */
|
337 |
|
|
ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */
|
338 |
|
|
ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */
|
339 |
|
|
ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */
|
340 |
|
|
ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */
|
341 |
|
|
ATA_HORKAGE_SKIP_PM = (1 << 5), /* Skip PM operations */
|
342 |
|
|
ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */
|
343 |
|
|
ATA_HORKAGE_IPM = (1 << 7), /* Link PM problems */
|
344 |
|
|
ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */
|
345 |
|
|
ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */
|
346 |
|
|
|
347 |
|
|
/* DMA mask for user DMA control: User visible values; DO NOT
|
348 |
|
|
renumber */
|
349 |
|
|
ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */
|
350 |
|
|
ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */
|
351 |
|
|
ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */
|
352 |
|
|
};
|
353 |
|
|
|
354 |
|
|
enum hsm_task_states {
|
355 |
|
|
HSM_ST_IDLE, /* no command on going */
|
356 |
|
|
HSM_ST_FIRST, /* (waiting the device to)
|
357 |
|
|
write CDB or first data block */
|
358 |
|
|
HSM_ST, /* (waiting the device to) transfer data */
|
359 |
|
|
HSM_ST_LAST, /* (waiting the device to) complete command */
|
360 |
|
|
HSM_ST_ERR, /* error */
|
361 |
|
|
};
|
362 |
|
|
|
363 |
|
|
enum ata_completion_errors {
|
364 |
|
|
AC_ERR_DEV = (1 << 0), /* device reported error */
|
365 |
|
|
AC_ERR_HSM = (1 << 1), /* host state machine violation */
|
366 |
|
|
AC_ERR_TIMEOUT = (1 << 2), /* timeout */
|
367 |
|
|
AC_ERR_MEDIA = (1 << 3), /* media error */
|
368 |
|
|
AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */
|
369 |
|
|
AC_ERR_HOST_BUS = (1 << 5), /* host bus error */
|
370 |
|
|
AC_ERR_SYSTEM = (1 << 6), /* system error */
|
371 |
|
|
AC_ERR_INVALID = (1 << 7), /* invalid argument */
|
372 |
|
|
AC_ERR_OTHER = (1 << 8), /* unknown */
|
373 |
|
|
AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */
|
374 |
|
|
AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */
|
375 |
|
|
};
|
376 |
|
|
|
377 |
|
|
/* forward declarations */
|
378 |
|
|
struct scsi_device;
|
379 |
|
|
struct ata_port_operations;
|
380 |
|
|
struct ata_port;
|
381 |
|
|
struct ata_link;
|
382 |
|
|
struct ata_queued_cmd;
|
383 |
|
|
|
384 |
|
|
/* typedefs */
|
385 |
|
|
typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
|
386 |
|
|
typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
|
387 |
|
|
typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
|
388 |
|
|
unsigned long deadline);
|
389 |
|
|
typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
|
390 |
|
|
|
391 |
|
|
/*
|
392 |
|
|
* host pm policy: If you alter this, you also need to alter libata-scsi.c
|
393 |
|
|
* (for the ascii descriptions)
|
394 |
|
|
*/
|
395 |
|
|
enum link_pm {
|
396 |
|
|
NOT_AVAILABLE,
|
397 |
|
|
MIN_POWER,
|
398 |
|
|
MAX_PERFORMANCE,
|
399 |
|
|
MEDIUM_POWER,
|
400 |
|
|
};
|
401 |
|
|
extern struct class_device_attribute class_device_attr_link_power_management_policy;
|
402 |
|
|
|
403 |
|
|
struct ata_ioports {
|
404 |
|
|
void __iomem *cmd_addr;
|
405 |
|
|
void __iomem *data_addr;
|
406 |
|
|
void __iomem *error_addr;
|
407 |
|
|
void __iomem *feature_addr;
|
408 |
|
|
void __iomem *nsect_addr;
|
409 |
|
|
void __iomem *lbal_addr;
|
410 |
|
|
void __iomem *lbam_addr;
|
411 |
|
|
void __iomem *lbah_addr;
|
412 |
|
|
void __iomem *device_addr;
|
413 |
|
|
void __iomem *status_addr;
|
414 |
|
|
void __iomem *command_addr;
|
415 |
|
|
void __iomem *altstatus_addr;
|
416 |
|
|
void __iomem *ctl_addr;
|
417 |
|
|
void __iomem *bmdma_addr;
|
418 |
|
|
void __iomem *scr_addr;
|
419 |
|
|
};
|
420 |
|
|
|
421 |
|
|
struct ata_host {
|
422 |
|
|
spinlock_t lock;
|
423 |
|
|
struct device *dev;
|
424 |
|
|
void __iomem * const *iomap;
|
425 |
|
|
unsigned int n_ports;
|
426 |
|
|
void *private_data;
|
427 |
|
|
const struct ata_port_operations *ops;
|
428 |
|
|
unsigned long flags;
|
429 |
|
|
#ifdef CONFIG_ATA_ACPI
|
430 |
|
|
acpi_handle acpi_handle;
|
431 |
|
|
#endif
|
432 |
|
|
struct ata_port *simplex_claimed; /* channel owning the DMA */
|
433 |
|
|
struct ata_port *ports[0];
|
434 |
|
|
};
|
435 |
|
|
|
436 |
|
|
struct ata_queued_cmd {
|
437 |
|
|
struct ata_port *ap;
|
438 |
|
|
struct ata_device *dev;
|
439 |
|
|
|
440 |
|
|
struct scsi_cmnd *scsicmd;
|
441 |
|
|
void (*scsidone)(struct scsi_cmnd *);
|
442 |
|
|
|
443 |
|
|
struct ata_taskfile tf;
|
444 |
|
|
u8 cdb[ATAPI_CDB_LEN];
|
445 |
|
|
|
446 |
|
|
unsigned long flags; /* ATA_QCFLAG_xxx */
|
447 |
|
|
unsigned int tag;
|
448 |
|
|
unsigned int n_elem;
|
449 |
|
|
unsigned int n_iter;
|
450 |
|
|
unsigned int orig_n_elem;
|
451 |
|
|
|
452 |
|
|
int dma_dir;
|
453 |
|
|
|
454 |
|
|
unsigned int pad_len;
|
455 |
|
|
unsigned int sect_size;
|
456 |
|
|
|
457 |
|
|
unsigned int nbytes;
|
458 |
|
|
unsigned int curbytes;
|
459 |
|
|
|
460 |
|
|
struct scatterlist *cursg;
|
461 |
|
|
unsigned int cursg_ofs;
|
462 |
|
|
|
463 |
|
|
struct scatterlist sgent;
|
464 |
|
|
struct scatterlist pad_sgent;
|
465 |
|
|
void *buf_virt;
|
466 |
|
|
|
467 |
|
|
/* DO NOT iterate over __sg manually, use ata_for_each_sg() */
|
468 |
|
|
struct scatterlist *__sg;
|
469 |
|
|
|
470 |
|
|
unsigned int err_mask;
|
471 |
|
|
struct ata_taskfile result_tf;
|
472 |
|
|
ata_qc_cb_t complete_fn;
|
473 |
|
|
|
474 |
|
|
void *private_data;
|
475 |
|
|
void *lldd_task;
|
476 |
|
|
};
|
477 |
|
|
|
478 |
|
|
struct ata_port_stats {
|
479 |
|
|
unsigned long unhandled_irq;
|
480 |
|
|
unsigned long idle_irq;
|
481 |
|
|
unsigned long rw_reqbuf;
|
482 |
|
|
};
|
483 |
|
|
|
484 |
|
|
struct ata_ering_entry {
|
485 |
|
|
int is_io;
|
486 |
|
|
unsigned int err_mask;
|
487 |
|
|
u64 timestamp;
|
488 |
|
|
};
|
489 |
|
|
|
490 |
|
|
struct ata_ering {
|
491 |
|
|
int cursor;
|
492 |
|
|
struct ata_ering_entry ring[ATA_ERING_SIZE];
|
493 |
|
|
};
|
494 |
|
|
|
495 |
|
|
struct ata_device {
|
496 |
|
|
struct ata_link *link;
|
497 |
|
|
unsigned int devno; /* 0 or 1 */
|
498 |
|
|
unsigned long flags; /* ATA_DFLAG_xxx */
|
499 |
|
|
unsigned int horkage; /* List of broken features */
|
500 |
|
|
struct scsi_device *sdev; /* attached SCSI device */
|
501 |
|
|
#ifdef CONFIG_ATA_ACPI
|
502 |
|
|
acpi_handle acpi_handle;
|
503 |
|
|
union acpi_object *gtf_cache;
|
504 |
|
|
#endif
|
505 |
|
|
/* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */
|
506 |
|
|
u64 n_sectors; /* size of device, if ATA */
|
507 |
|
|
unsigned int class; /* ATA_DEV_xxx */
|
508 |
|
|
|
509 |
|
|
union {
|
510 |
|
|
u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
|
511 |
|
|
u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
|
512 |
|
|
};
|
513 |
|
|
|
514 |
|
|
u8 pio_mode;
|
515 |
|
|
u8 dma_mode;
|
516 |
|
|
u8 xfer_mode;
|
517 |
|
|
unsigned int xfer_shift; /* ATA_SHIFT_xxx */
|
518 |
|
|
|
519 |
|
|
unsigned int multi_count; /* sectors count for
|
520 |
|
|
READ/WRITE MULTIPLE */
|
521 |
|
|
unsigned int max_sectors; /* per-device max sectors */
|
522 |
|
|
unsigned int cdb_len;
|
523 |
|
|
|
524 |
|
|
/* per-dev xfer mask */
|
525 |
|
|
unsigned int pio_mask;
|
526 |
|
|
unsigned int mwdma_mask;
|
527 |
|
|
unsigned int udma_mask;
|
528 |
|
|
|
529 |
|
|
/* for CHS addressing */
|
530 |
|
|
u16 cylinders; /* Number of cylinders */
|
531 |
|
|
u16 heads; /* Number of heads */
|
532 |
|
|
u16 sectors; /* Number of sectors per track */
|
533 |
|
|
|
534 |
|
|
/* error history */
|
535 |
|
|
struct ata_ering ering;
|
536 |
|
|
int spdn_cnt;
|
537 |
|
|
};
|
538 |
|
|
|
539 |
|
|
/* Offset into struct ata_device. Fields above it are maintained
|
540 |
|
|
* acress device init. Fields below are zeroed.
|
541 |
|
|
*/
|
542 |
|
|
#define ATA_DEVICE_CLEAR_OFFSET offsetof(struct ata_device, n_sectors)
|
543 |
|
|
|
544 |
|
|
struct ata_eh_info {
|
545 |
|
|
struct ata_device *dev; /* offending device */
|
546 |
|
|
u32 serror; /* SError from LLDD */
|
547 |
|
|
unsigned int err_mask; /* port-wide err_mask */
|
548 |
|
|
unsigned int action; /* ATA_EH_* action mask */
|
549 |
|
|
unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */
|
550 |
|
|
unsigned int flags; /* ATA_EHI_* flags */
|
551 |
|
|
|
552 |
|
|
unsigned int probe_mask;
|
553 |
|
|
|
554 |
|
|
char desc[ATA_EH_DESC_LEN];
|
555 |
|
|
int desc_len;
|
556 |
|
|
};
|
557 |
|
|
|
558 |
|
|
struct ata_eh_context {
|
559 |
|
|
struct ata_eh_info i;
|
560 |
|
|
int tries[ATA_MAX_DEVICES];
|
561 |
|
|
unsigned int classes[ATA_MAX_DEVICES];
|
562 |
|
|
unsigned int did_probe_mask;
|
563 |
|
|
};
|
564 |
|
|
|
565 |
|
|
struct ata_acpi_drive
|
566 |
|
|
{
|
567 |
|
|
u32 pio;
|
568 |
|
|
u32 dma;
|
569 |
|
|
} __packed;
|
570 |
|
|
|
571 |
|
|
struct ata_acpi_gtm {
|
572 |
|
|
struct ata_acpi_drive drive[2];
|
573 |
|
|
u32 flags;
|
574 |
|
|
} __packed;
|
575 |
|
|
|
576 |
|
|
struct ata_link {
|
577 |
|
|
struct ata_port *ap;
|
578 |
|
|
int pmp; /* port multiplier port # */
|
579 |
|
|
|
580 |
|
|
unsigned int active_tag; /* active tag on this link */
|
581 |
|
|
u32 sactive; /* active NCQ commands */
|
582 |
|
|
|
583 |
|
|
unsigned int flags; /* ATA_LFLAG_xxx */
|
584 |
|
|
|
585 |
|
|
unsigned int hw_sata_spd_limit;
|
586 |
|
|
unsigned int sata_spd_limit;
|
587 |
|
|
unsigned int sata_spd; /* current SATA PHY speed */
|
588 |
|
|
|
589 |
|
|
/* record runtime error info, protected by host_set lock */
|
590 |
|
|
struct ata_eh_info eh_info;
|
591 |
|
|
/* EH context */
|
592 |
|
|
struct ata_eh_context eh_context;
|
593 |
|
|
|
594 |
|
|
struct ata_device device[ATA_MAX_DEVICES];
|
595 |
|
|
};
|
596 |
|
|
|
597 |
|
|
struct ata_port {
|
598 |
|
|
struct Scsi_Host *scsi_host; /* our co-allocated scsi host */
|
599 |
|
|
const struct ata_port_operations *ops;
|
600 |
|
|
spinlock_t *lock;
|
601 |
|
|
unsigned long flags; /* ATA_FLAG_xxx */
|
602 |
|
|
unsigned int pflags; /* ATA_PFLAG_xxx */
|
603 |
|
|
unsigned int print_id; /* user visible unique port ID */
|
604 |
|
|
unsigned int port_no; /* 0 based port no. inside the host */
|
605 |
|
|
|
606 |
|
|
struct ata_prd *prd; /* our SG list */
|
607 |
|
|
dma_addr_t prd_dma; /* and its DMA mapping */
|
608 |
|
|
|
609 |
|
|
void *pad; /* array of DMA pad buffers */
|
610 |
|
|
dma_addr_t pad_dma;
|
611 |
|
|
|
612 |
|
|
struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */
|
613 |
|
|
|
614 |
|
|
u8 ctl; /* cache of ATA control register */
|
615 |
|
|
u8 last_ctl; /* Cache last written value */
|
616 |
|
|
unsigned int pio_mask;
|
617 |
|
|
unsigned int mwdma_mask;
|
618 |
|
|
unsigned int udma_mask;
|
619 |
|
|
unsigned int cbl; /* cable type; ATA_CBL_xxx */
|
620 |
|
|
|
621 |
|
|
struct ata_queued_cmd qcmd[ATA_MAX_QUEUE];
|
622 |
|
|
unsigned long qc_allocated;
|
623 |
|
|
unsigned int qc_active;
|
624 |
|
|
int nr_active_links; /* #links with active qcs */
|
625 |
|
|
|
626 |
|
|
struct ata_link link; /* host default link */
|
627 |
|
|
|
628 |
|
|
int nr_pmp_links; /* nr of available PMP links */
|
629 |
|
|
struct ata_link *pmp_link; /* array of PMP links */
|
630 |
|
|
struct ata_link *excl_link; /* for PMP qc exclusion */
|
631 |
|
|
|
632 |
|
|
struct ata_port_stats stats;
|
633 |
|
|
struct ata_host *host;
|
634 |
|
|
struct device *dev;
|
635 |
|
|
|
636 |
|
|
void *port_task_data;
|
637 |
|
|
struct delayed_work port_task;
|
638 |
|
|
struct delayed_work hotplug_task;
|
639 |
|
|
struct work_struct scsi_rescan_task;
|
640 |
|
|
|
641 |
|
|
unsigned int hsm_task_state;
|
642 |
|
|
|
643 |
|
|
u32 msg_enable;
|
644 |
|
|
struct list_head eh_done_q;
|
645 |
|
|
wait_queue_head_t eh_wait_q;
|
646 |
|
|
int eh_tries;
|
647 |
|
|
|
648 |
|
|
pm_message_t pm_mesg;
|
649 |
|
|
int *pm_result;
|
650 |
|
|
enum link_pm pm_policy;
|
651 |
|
|
|
652 |
|
|
struct timer_list fastdrain_timer;
|
653 |
|
|
unsigned long fastdrain_cnt;
|
654 |
|
|
|
655 |
|
|
void *private_data;
|
656 |
|
|
|
657 |
|
|
#ifdef CONFIG_ATA_ACPI
|
658 |
|
|
acpi_handle acpi_handle;
|
659 |
|
|
struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */
|
660 |
|
|
#endif
|
661 |
|
|
u8 sector_buf[ATA_SECT_SIZE]; /* owned by EH */
|
662 |
|
|
};
|
663 |
|
|
|
664 |
|
|
struct ata_port_operations {
|
665 |
|
|
void (*dev_config) (struct ata_device *);
|
666 |
|
|
|
667 |
|
|
void (*set_piomode) (struct ata_port *, struct ata_device *);
|
668 |
|
|
void (*set_dmamode) (struct ata_port *, struct ata_device *);
|
669 |
|
|
unsigned long (*mode_filter) (struct ata_device *, unsigned long);
|
670 |
|
|
|
671 |
|
|
void (*tf_load) (struct ata_port *ap, const struct ata_taskfile *tf);
|
672 |
|
|
void (*tf_read) (struct ata_port *ap, struct ata_taskfile *tf);
|
673 |
|
|
|
674 |
|
|
void (*exec_command)(struct ata_port *ap, const struct ata_taskfile *tf);
|
675 |
|
|
u8 (*check_status)(struct ata_port *ap);
|
676 |
|
|
u8 (*check_altstatus)(struct ata_port *ap);
|
677 |
|
|
void (*dev_select)(struct ata_port *ap, unsigned int device);
|
678 |
|
|
|
679 |
|
|
void (*phy_reset) (struct ata_port *ap); /* obsolete */
|
680 |
|
|
int (*set_mode) (struct ata_link *link, struct ata_device **r_failed_dev);
|
681 |
|
|
|
682 |
|
|
int (*cable_detect) (struct ata_port *ap);
|
683 |
|
|
|
684 |
|
|
int (*check_atapi_dma) (struct ata_queued_cmd *qc);
|
685 |
|
|
|
686 |
|
|
void (*bmdma_setup) (struct ata_queued_cmd *qc);
|
687 |
|
|
void (*bmdma_start) (struct ata_queued_cmd *qc);
|
688 |
|
|
|
689 |
|
|
void (*data_xfer) (struct ata_device *, unsigned char *, unsigned int, int);
|
690 |
|
|
|
691 |
|
|
int (*qc_defer) (struct ata_queued_cmd *qc);
|
692 |
|
|
void (*qc_prep) (struct ata_queued_cmd *qc);
|
693 |
|
|
unsigned int (*qc_issue) (struct ata_queued_cmd *qc);
|
694 |
|
|
|
695 |
|
|
/* port multiplier */
|
696 |
|
|
void (*pmp_attach) (struct ata_port *ap);
|
697 |
|
|
void (*pmp_detach) (struct ata_port *ap);
|
698 |
|
|
|
699 |
|
|
/* Error handlers. ->error_handler overrides ->eng_timeout and
|
700 |
|
|
* indicates that new-style EH is in place.
|
701 |
|
|
*/
|
702 |
|
|
void (*eng_timeout) (struct ata_port *ap); /* obsolete */
|
703 |
|
|
|
704 |
|
|
void (*freeze) (struct ata_port *ap);
|
705 |
|
|
void (*thaw) (struct ata_port *ap);
|
706 |
|
|
void (*error_handler) (struct ata_port *ap);
|
707 |
|
|
void (*post_internal_cmd) (struct ata_queued_cmd *qc);
|
708 |
|
|
|
709 |
|
|
irq_handler_t irq_handler;
|
710 |
|
|
void (*irq_clear) (struct ata_port *);
|
711 |
|
|
u8 (*irq_on) (struct ata_port *);
|
712 |
|
|
|
713 |
|
|
int (*scr_read) (struct ata_port *ap, unsigned int sc_reg, u32 *val);
|
714 |
|
|
int (*scr_write) (struct ata_port *ap, unsigned int sc_reg, u32 val);
|
715 |
|
|
|
716 |
|
|
int (*port_suspend) (struct ata_port *ap, pm_message_t mesg);
|
717 |
|
|
int (*port_resume) (struct ata_port *ap);
|
718 |
|
|
int (*enable_pm) (struct ata_port *ap, enum link_pm policy);
|
719 |
|
|
void (*disable_pm) (struct ata_port *ap);
|
720 |
|
|
int (*port_start) (struct ata_port *ap);
|
721 |
|
|
void (*port_stop) (struct ata_port *ap);
|
722 |
|
|
|
723 |
|
|
void (*host_stop) (struct ata_host *host);
|
724 |
|
|
|
725 |
|
|
void (*bmdma_stop) (struct ata_queued_cmd *qc);
|
726 |
|
|
u8 (*bmdma_status) (struct ata_port *ap);
|
727 |
|
|
};
|
728 |
|
|
|
729 |
|
|
struct ata_port_info {
|
730 |
|
|
struct scsi_host_template *sht;
|
731 |
|
|
unsigned long flags;
|
732 |
|
|
unsigned long link_flags;
|
733 |
|
|
unsigned long pio_mask;
|
734 |
|
|
unsigned long mwdma_mask;
|
735 |
|
|
unsigned long udma_mask;
|
736 |
|
|
const struct ata_port_operations *port_ops;
|
737 |
|
|
irq_handler_t irq_handler;
|
738 |
|
|
void *private_data;
|
739 |
|
|
};
|
740 |
|
|
|
741 |
|
|
struct ata_timing {
|
742 |
|
|
unsigned short mode; /* ATA mode */
|
743 |
|
|
unsigned short setup; /* t1 */
|
744 |
|
|
unsigned short act8b; /* t2 for 8-bit I/O */
|
745 |
|
|
unsigned short rec8b; /* t2i for 8-bit I/O */
|
746 |
|
|
unsigned short cyc8b; /* t0 for 8-bit I/O */
|
747 |
|
|
unsigned short active; /* t2 or tD */
|
748 |
|
|
unsigned short recover; /* t2i or tK */
|
749 |
|
|
unsigned short cycle; /* t0 */
|
750 |
|
|
unsigned short udma; /* t2CYCTYP/2 */
|
751 |
|
|
};
|
752 |
|
|
|
753 |
|
|
#define FIT(v, vmin, vmax) max_t(short, min_t(short, v, vmax), vmin)
|
754 |
|
|
|
755 |
|
|
extern const unsigned long sata_deb_timing_normal[];
|
756 |
|
|
extern const unsigned long sata_deb_timing_hotplug[];
|
757 |
|
|
extern const unsigned long sata_deb_timing_long[];
|
758 |
|
|
|
759 |
|
|
extern const struct ata_port_operations ata_dummy_port_ops;
|
760 |
|
|
extern const struct ata_port_info ata_dummy_port_info;
|
761 |
|
|
|
762 |
|
|
static inline const unsigned long *
|
763 |
|
|
sata_ehc_deb_timing(struct ata_eh_context *ehc)
|
764 |
|
|
{
|
765 |
|
|
if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
|
766 |
|
|
return sata_deb_timing_hotplug;
|
767 |
|
|
else
|
768 |
|
|
return sata_deb_timing_normal;
|
769 |
|
|
}
|
770 |
|
|
|
771 |
|
|
static inline int ata_port_is_dummy(struct ata_port *ap)
|
772 |
|
|
{
|
773 |
|
|
return ap->ops == &ata_dummy_port_ops;
|
774 |
|
|
}
|
775 |
|
|
|
776 |
|
|
extern void sata_print_link_status(struct ata_link *link);
|
777 |
|
|
extern void ata_port_probe(struct ata_port *);
|
778 |
|
|
extern void ata_bus_reset(struct ata_port *ap);
|
779 |
|
|
extern int sata_set_spd(struct ata_link *link);
|
780 |
|
|
extern int sata_link_debounce(struct ata_link *link,
|
781 |
|
|
const unsigned long *params, unsigned long deadline);
|
782 |
|
|
extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
|
783 |
|
|
unsigned long deadline);
|
784 |
|
|
extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
|
785 |
|
|
extern int ata_std_softreset(struct ata_link *link, unsigned int *classes,
|
786 |
|
|
unsigned long deadline);
|
787 |
|
|
extern int sata_link_hardreset(struct ata_link *link,
|
788 |
|
|
const unsigned long *timing, unsigned long deadline);
|
789 |
|
|
extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
|
790 |
|
|
unsigned long deadline);
|
791 |
|
|
extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
|
792 |
|
|
extern void ata_port_disable(struct ata_port *);
|
793 |
|
|
extern void ata_std_ports(struct ata_ioports *ioaddr);
|
794 |
|
|
|
795 |
|
|
extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
|
796 |
|
|
extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
|
797 |
|
|
const struct ata_port_info * const * ppi, int n_ports);
|
798 |
|
|
extern int ata_host_start(struct ata_host *host);
|
799 |
|
|
extern int ata_host_register(struct ata_host *host,
|
800 |
|
|
struct scsi_host_template *sht);
|
801 |
|
|
extern int ata_host_activate(struct ata_host *host, int irq,
|
802 |
|
|
irq_handler_t irq_handler, unsigned long irq_flags,
|
803 |
|
|
struct scsi_host_template *sht);
|
804 |
|
|
extern void ata_host_detach(struct ata_host *host);
|
805 |
|
|
extern void ata_host_init(struct ata_host *, struct device *,
|
806 |
|
|
unsigned long, const struct ata_port_operations *);
|
807 |
|
|
extern int ata_scsi_detect(struct scsi_host_template *sht);
|
808 |
|
|
extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
|
809 |
|
|
extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *));
|
810 |
|
|
extern void ata_sas_port_destroy(struct ata_port *);
|
811 |
|
|
extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
|
812 |
|
|
struct ata_port_info *, struct Scsi_Host *);
|
813 |
|
|
extern int ata_sas_port_init(struct ata_port *);
|
814 |
|
|
extern int ata_sas_port_start(struct ata_port *ap);
|
815 |
|
|
extern void ata_sas_port_stop(struct ata_port *ap);
|
816 |
|
|
extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
|
817 |
|
|
extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *),
|
818 |
|
|
struct ata_port *ap);
|
819 |
|
|
extern unsigned int ata_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc);
|
820 |
|
|
extern int sata_scr_valid(struct ata_link *link);
|
821 |
|
|
extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
|
822 |
|
|
extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
|
823 |
|
|
extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
|
824 |
|
|
extern int ata_link_online(struct ata_link *link);
|
825 |
|
|
extern int ata_link_offline(struct ata_link *link);
|
826 |
|
|
#ifdef CONFIG_PM
|
827 |
|
|
extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
|
828 |
|
|
extern void ata_host_resume(struct ata_host *host);
|
829 |
|
|
#endif
|
830 |
|
|
extern int ata_ratelimit(void);
|
831 |
|
|
extern int ata_busy_sleep(struct ata_port *ap,
|
832 |
|
|
unsigned long timeout_pat, unsigned long timeout);
|
833 |
|
|
extern void ata_wait_after_reset(struct ata_port *ap, unsigned long deadline);
|
834 |
|
|
extern int ata_wait_ready(struct ata_port *ap, unsigned long deadline);
|
835 |
|
|
extern void ata_port_queue_task(struct ata_port *ap, work_func_t fn,
|
836 |
|
|
void *data, unsigned long delay);
|
837 |
|
|
extern u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val,
|
838 |
|
|
unsigned long interval_msec,
|
839 |
|
|
unsigned long timeout_msec);
|
840 |
|
|
extern unsigned int ata_dev_try_classify(struct ata_device *dev, int present,
|
841 |
|
|
u8 *r_err);
|
842 |
|
|
|
843 |
|
|
/*
|
844 |
|
|
* Default driver ops implementations
|
845 |
|
|
*/
|
846 |
|
|
extern void ata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
|
847 |
|
|
extern void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
|
848 |
|
|
extern void ata_tf_to_fis(const struct ata_taskfile *tf,
|
849 |
|
|
u8 pmp, int is_cmd, u8 *fis);
|
850 |
|
|
extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
|
851 |
|
|
extern void ata_noop_dev_select(struct ata_port *ap, unsigned int device);
|
852 |
|
|
extern void ata_std_dev_select(struct ata_port *ap, unsigned int device);
|
853 |
|
|
extern u8 ata_check_status(struct ata_port *ap);
|
854 |
|
|
extern u8 ata_altstatus(struct ata_port *ap);
|
855 |
|
|
extern void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf);
|
856 |
|
|
extern int ata_port_start(struct ata_port *ap);
|
857 |
|
|
extern int ata_sff_port_start(struct ata_port *ap);
|
858 |
|
|
extern irqreturn_t ata_interrupt(int irq, void *dev_instance);
|
859 |
|
|
extern void ata_data_xfer(struct ata_device *adev, unsigned char *buf,
|
860 |
|
|
unsigned int buflen, int write_data);
|
861 |
|
|
extern void ata_data_xfer_noirq(struct ata_device *adev, unsigned char *buf,
|
862 |
|
|
unsigned int buflen, int write_data);
|
863 |
|
|
extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
|
864 |
|
|
extern void ata_dumb_qc_prep(struct ata_queued_cmd *qc);
|
865 |
|
|
extern void ata_qc_prep(struct ata_queued_cmd *qc);
|
866 |
|
|
extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);
|
867 |
|
|
extern unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc);
|
868 |
|
|
extern void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf,
|
869 |
|
|
unsigned int buflen);
|
870 |
|
|
extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
|
871 |
|
|
unsigned int n_elem);
|
872 |
|
|
extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
|
873 |
|
|
extern void ata_dev_disable(struct ata_device *adev);
|
874 |
|
|
extern void ata_id_string(const u16 *id, unsigned char *s,
|
875 |
|
|
unsigned int ofs, unsigned int len);
|
876 |
|
|
extern void ata_id_c_string(const u16 *id, unsigned char *s,
|
877 |
|
|
unsigned int ofs, unsigned int len);
|
878 |
|
|
extern void ata_id_to_dma_mode(struct ata_device *dev, u8 unknown);
|
879 |
|
|
extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
|
880 |
|
|
extern void ata_bmdma_start(struct ata_queued_cmd *qc);
|
881 |
|
|
extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
|
882 |
|
|
extern u8 ata_bmdma_status(struct ata_port *ap);
|
883 |
|
|
extern void ata_bmdma_irq_clear(struct ata_port *ap);
|
884 |
|
|
extern void ata_bmdma_freeze(struct ata_port *ap);
|
885 |
|
|
extern void ata_bmdma_thaw(struct ata_port *ap);
|
886 |
|
|
extern void ata_bmdma_drive_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
|
887 |
|
|
ata_reset_fn_t softreset,
|
888 |
|
|
ata_reset_fn_t hardreset,
|
889 |
|
|
ata_postreset_fn_t postreset);
|
890 |
|
|
extern void ata_bmdma_error_handler(struct ata_port *ap);
|
891 |
|
|
extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
|
892 |
|
|
extern int ata_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
|
893 |
|
|
u8 status, int in_wq);
|
894 |
|
|
extern void ata_qc_complete(struct ata_queued_cmd *qc);
|
895 |
|
|
extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active,
|
896 |
|
|
void (*finish_qc)(struct ata_queued_cmd *));
|
897 |
|
|
extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd,
|
898 |
|
|
void (*done)(struct scsi_cmnd *));
|
899 |
|
|
extern int ata_std_bios_param(struct scsi_device *sdev,
|
900 |
|
|
struct block_device *bdev,
|
901 |
|
|
sector_t capacity, int geom[]);
|
902 |
|
|
extern int ata_scsi_slave_config(struct scsi_device *sdev);
|
903 |
|
|
extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
|
904 |
|
|
extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
|
905 |
|
|
int queue_depth);
|
906 |
|
|
extern struct ata_device *ata_dev_pair(struct ata_device *adev);
|
907 |
|
|
extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
|
908 |
|
|
extern u8 ata_irq_on(struct ata_port *ap);
|
909 |
|
|
|
910 |
|
|
extern int ata_cable_40wire(struct ata_port *ap);
|
911 |
|
|
extern int ata_cable_80wire(struct ata_port *ap);
|
912 |
|
|
extern int ata_cable_sata(struct ata_port *ap);
|
913 |
|
|
extern int ata_cable_unknown(struct ata_port *ap);
|
914 |
|
|
|
915 |
|
|
/*
|
916 |
|
|
* Timing helpers
|
917 |
|
|
*/
|
918 |
|
|
|
919 |
|
|
extern unsigned int ata_pio_need_iordy(const struct ata_device *);
|
920 |
|
|
extern int ata_timing_compute(struct ata_device *, unsigned short,
|
921 |
|
|
struct ata_timing *, int, int);
|
922 |
|
|
extern void ata_timing_merge(const struct ata_timing *,
|
923 |
|
|
const struct ata_timing *, struct ata_timing *,
|
924 |
|
|
unsigned int);
|
925 |
|
|
|
926 |
|
|
enum {
|
927 |
|
|
ATA_TIMING_SETUP = (1 << 0),
|
928 |
|
|
ATA_TIMING_ACT8B = (1 << 1),
|
929 |
|
|
ATA_TIMING_REC8B = (1 << 2),
|
930 |
|
|
ATA_TIMING_CYC8B = (1 << 3),
|
931 |
|
|
ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
|
932 |
|
|
ATA_TIMING_CYC8B,
|
933 |
|
|
ATA_TIMING_ACTIVE = (1 << 4),
|
934 |
|
|
ATA_TIMING_RECOVER = (1 << 5),
|
935 |
|
|
ATA_TIMING_CYCLE = (1 << 6),
|
936 |
|
|
ATA_TIMING_UDMA = (1 << 7),
|
937 |
|
|
ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
|
938 |
|
|
ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
|
939 |
|
|
ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
|
940 |
|
|
ATA_TIMING_CYCLE | ATA_TIMING_UDMA,
|
941 |
|
|
};
|
942 |
|
|
|
943 |
|
|
/* libata-acpi.c */
|
944 |
|
|
#ifdef CONFIG_ATA_ACPI
|
945 |
|
|
static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
|
946 |
|
|
{
|
947 |
|
|
if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
|
948 |
|
|
return &ap->__acpi_init_gtm;
|
949 |
|
|
return NULL;
|
950 |
|
|
}
|
951 |
|
|
extern int ata_acpi_cbl_80wire(struct ata_port *ap);
|
952 |
|
|
int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
|
953 |
|
|
int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
|
954 |
|
|
#else
|
955 |
|
|
static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
|
956 |
|
|
{
|
957 |
|
|
return NULL;
|
958 |
|
|
}
|
959 |
|
|
static inline int ata_acpi_cbl_80wire(struct ata_port *ap) { return 0; }
|
960 |
|
|
#endif
|
961 |
|
|
|
962 |
|
|
#ifdef CONFIG_PCI
|
963 |
|
|
struct pci_dev;
|
964 |
|
|
|
965 |
|
|
extern int ata_pci_init_one(struct pci_dev *pdev,
|
966 |
|
|
const struct ata_port_info * const * ppi);
|
967 |
|
|
extern void ata_pci_remove_one(struct pci_dev *pdev);
|
968 |
|
|
#ifdef CONFIG_PM
|
969 |
|
|
extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
|
970 |
|
|
extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
|
971 |
|
|
extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
|
972 |
|
|
extern int ata_pci_device_resume(struct pci_dev *pdev);
|
973 |
|
|
#endif
|
974 |
|
|
extern int ata_pci_clear_simplex(struct pci_dev *pdev);
|
975 |
|
|
|
976 |
|
|
struct pci_bits {
|
977 |
|
|
unsigned int reg; /* PCI config register to read */
|
978 |
|
|
unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
|
979 |
|
|
unsigned long mask;
|
980 |
|
|
unsigned long val;
|
981 |
|
|
};
|
982 |
|
|
|
983 |
|
|
extern int ata_pci_init_sff_host(struct ata_host *host);
|
984 |
|
|
extern int ata_pci_init_bmdma(struct ata_host *host);
|
985 |
|
|
extern int ata_pci_prepare_sff_host(struct pci_dev *pdev,
|
986 |
|
|
const struct ata_port_info * const * ppi,
|
987 |
|
|
struct ata_host **r_host);
|
988 |
|
|
extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
|
989 |
|
|
extern unsigned long ata_pci_default_filter(struct ata_device *, unsigned long);
|
990 |
|
|
#endif /* CONFIG_PCI */
|
991 |
|
|
|
992 |
|
|
/*
|
993 |
|
|
* PMP
|
994 |
|
|
*/
|
995 |
|
|
extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
|
996 |
|
|
extern int sata_pmp_std_prereset(struct ata_link *link, unsigned long deadline);
|
997 |
|
|
extern int sata_pmp_std_hardreset(struct ata_link *link, unsigned int *class,
|
998 |
|
|
unsigned long deadline);
|
999 |
|
|
extern void sata_pmp_std_postreset(struct ata_link *link, unsigned int *class);
|
1000 |
|
|
extern void sata_pmp_do_eh(struct ata_port *ap,
|
1001 |
|
|
ata_prereset_fn_t prereset, ata_reset_fn_t softreset,
|
1002 |
|
|
ata_reset_fn_t hardreset, ata_postreset_fn_t postreset,
|
1003 |
|
|
ata_prereset_fn_t pmp_prereset, ata_reset_fn_t pmp_softreset,
|
1004 |
|
|
ata_reset_fn_t pmp_hardreset, ata_postreset_fn_t pmp_postreset);
|
1005 |
|
|
|
1006 |
|
|
/*
|
1007 |
|
|
* EH
|
1008 |
|
|
*/
|
1009 |
|
|
extern void ata_port_schedule_eh(struct ata_port *ap);
|
1010 |
|
|
extern int ata_link_abort(struct ata_link *link);
|
1011 |
|
|
extern int ata_port_abort(struct ata_port *ap);
|
1012 |
|
|
extern int ata_port_freeze(struct ata_port *ap);
|
1013 |
|
|
extern int sata_async_notification(struct ata_port *ap);
|
1014 |
|
|
|
1015 |
|
|
extern void ata_eh_freeze_port(struct ata_port *ap);
|
1016 |
|
|
extern void ata_eh_thaw_port(struct ata_port *ap);
|
1017 |
|
|
|
1018 |
|
|
extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
|
1019 |
|
|
extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
|
1020 |
|
|
|
1021 |
|
|
extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
|
1022 |
|
|
ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
|
1023 |
|
|
ata_postreset_fn_t postreset);
|
1024 |
|
|
|
1025 |
|
|
/*
|
1026 |
|
|
* printk helpers
|
1027 |
|
|
*/
|
1028 |
|
|
#define ata_port_printk(ap, lv, fmt, args...) \
|
1029 |
|
|
printk("%sata%u: "fmt, lv, (ap)->print_id , ##args)
|
1030 |
|
|
|
1031 |
|
|
#define ata_link_printk(link, lv, fmt, args...) do { \
|
1032 |
|
|
if ((link)->ap->nr_pmp_links) \
|
1033 |
|
|
printk("%sata%u.%02u: "fmt, lv, (link)->ap->print_id, \
|
1034 |
|
|
(link)->pmp , ##args); \
|
1035 |
|
|
else \
|
1036 |
|
|
printk("%sata%u: "fmt, lv, (link)->ap->print_id , ##args); \
|
1037 |
|
|
} while(0)
|
1038 |
|
|
|
1039 |
|
|
#define ata_dev_printk(dev, lv, fmt, args...) \
|
1040 |
|
|
printk("%sata%u.%02u: "fmt, lv, (dev)->link->ap->print_id, \
|
1041 |
|
|
(dev)->link->pmp + (dev)->devno , ##args)
|
1042 |
|
|
|
1043 |
|
|
/*
|
1044 |
|
|
* ata_eh_info helpers
|
1045 |
|
|
*/
|
1046 |
|
|
extern void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...)
|
1047 |
|
|
__attribute__ ((format (printf, 2, 3)));
|
1048 |
|
|
extern void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...)
|
1049 |
|
|
__attribute__ ((format (printf, 2, 3)));
|
1050 |
|
|
extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
|
1051 |
|
|
|
1052 |
|
|
static inline void ata_ehi_schedule_probe(struct ata_eh_info *ehi)
|
1053 |
|
|
{
|
1054 |
|
|
ehi->flags |= ATA_EHI_RESUME_LINK;
|
1055 |
|
|
ehi->action |= ATA_EH_SOFTRESET;
|
1056 |
|
|
ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
|
1057 |
|
|
}
|
1058 |
|
|
|
1059 |
|
|
static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
|
1060 |
|
|
{
|
1061 |
|
|
ata_ehi_schedule_probe(ehi);
|
1062 |
|
|
ehi->flags |= ATA_EHI_HOTPLUGGED;
|
1063 |
|
|
ehi->action |= ATA_EH_ENABLE_LINK;
|
1064 |
|
|
ehi->err_mask |= AC_ERR_ATA_BUS;
|
1065 |
|
|
}
|
1066 |
|
|
|
1067 |
|
|
/*
|
1068 |
|
|
* port description helpers
|
1069 |
|
|
*/
|
1070 |
|
|
extern void ata_port_desc(struct ata_port *ap, const char *fmt, ...)
|
1071 |
|
|
__attribute__ ((format (printf, 2, 3)));
|
1072 |
|
|
#ifdef CONFIG_PCI
|
1073 |
|
|
extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
|
1074 |
|
|
const char *name);
|
1075 |
|
|
#endif
|
1076 |
|
|
|
1077 |
|
|
/*
|
1078 |
|
|
* qc helpers
|
1079 |
|
|
*/
|
1080 |
|
|
static inline struct scatterlist *
|
1081 |
|
|
ata_qc_first_sg(struct ata_queued_cmd *qc)
|
1082 |
|
|
{
|
1083 |
|
|
qc->n_iter = 0;
|
1084 |
|
|
if (qc->n_elem)
|
1085 |
|
|
return qc->__sg;
|
1086 |
|
|
if (qc->pad_len)
|
1087 |
|
|
return &qc->pad_sgent;
|
1088 |
|
|
return NULL;
|
1089 |
|
|
}
|
1090 |
|
|
|
1091 |
|
|
static inline struct scatterlist *
|
1092 |
|
|
ata_qc_next_sg(struct scatterlist *sg, struct ata_queued_cmd *qc)
|
1093 |
|
|
{
|
1094 |
|
|
if (sg == &qc->pad_sgent)
|
1095 |
|
|
return NULL;
|
1096 |
|
|
if (++qc->n_iter < qc->n_elem)
|
1097 |
|
|
return sg_next(sg);
|
1098 |
|
|
if (qc->pad_len)
|
1099 |
|
|
return &qc->pad_sgent;
|
1100 |
|
|
return NULL;
|
1101 |
|
|
}
|
1102 |
|
|
|
1103 |
|
|
#define ata_for_each_sg(sg, qc) \
|
1104 |
|
|
for (sg = ata_qc_first_sg(qc); sg; sg = ata_qc_next_sg(sg, qc))
|
1105 |
|
|
|
1106 |
|
|
static inline unsigned int ata_tag_valid(unsigned int tag)
|
1107 |
|
|
{
|
1108 |
|
|
return (tag < ATA_MAX_QUEUE) ? 1 : 0;
|
1109 |
|
|
}
|
1110 |
|
|
|
1111 |
|
|
static inline unsigned int ata_tag_internal(unsigned int tag)
|
1112 |
|
|
{
|
1113 |
|
|
return tag == ATA_MAX_QUEUE - 1;
|
1114 |
|
|
}
|
1115 |
|
|
|
1116 |
|
|
/*
|
1117 |
|
|
* device helpers
|
1118 |
|
|
*/
|
1119 |
|
|
static inline unsigned int ata_class_enabled(unsigned int class)
|
1120 |
|
|
{
|
1121 |
|
|
return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
|
1122 |
|
|
class == ATA_DEV_PMP || class == ATA_DEV_SEMB;
|
1123 |
|
|
}
|
1124 |
|
|
|
1125 |
|
|
static inline unsigned int ata_class_disabled(unsigned int class)
|
1126 |
|
|
{
|
1127 |
|
|
return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
|
1128 |
|
|
class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP;
|
1129 |
|
|
}
|
1130 |
|
|
|
1131 |
|
|
static inline unsigned int ata_class_absent(unsigned int class)
|
1132 |
|
|
{
|
1133 |
|
|
return !ata_class_enabled(class) && !ata_class_disabled(class);
|
1134 |
|
|
}
|
1135 |
|
|
|
1136 |
|
|
static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
|
1137 |
|
|
{
|
1138 |
|
|
return ata_class_enabled(dev->class);
|
1139 |
|
|
}
|
1140 |
|
|
|
1141 |
|
|
static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
|
1142 |
|
|
{
|
1143 |
|
|
return ata_class_disabled(dev->class);
|
1144 |
|
|
}
|
1145 |
|
|
|
1146 |
|
|
static inline unsigned int ata_dev_absent(const struct ata_device *dev)
|
1147 |
|
|
{
|
1148 |
|
|
return ata_class_absent(dev->class);
|
1149 |
|
|
}
|
1150 |
|
|
|
1151 |
|
|
/*
|
1152 |
|
|
* link helpers
|
1153 |
|
|
*/
|
1154 |
|
|
static inline int ata_is_host_link(const struct ata_link *link)
|
1155 |
|
|
{
|
1156 |
|
|
return link == &link->ap->link;
|
1157 |
|
|
}
|
1158 |
|
|
|
1159 |
|
|
static inline int ata_link_max_devices(const struct ata_link *link)
|
1160 |
|
|
{
|
1161 |
|
|
if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS)
|
1162 |
|
|
return 2;
|
1163 |
|
|
return 1;
|
1164 |
|
|
}
|
1165 |
|
|
|
1166 |
|
|
static inline int ata_link_active(struct ata_link *link)
|
1167 |
|
|
{
|
1168 |
|
|
return ata_tag_valid(link->active_tag) || link->sactive;
|
1169 |
|
|
}
|
1170 |
|
|
|
1171 |
|
|
static inline struct ata_link *ata_port_first_link(struct ata_port *ap)
|
1172 |
|
|
{
|
1173 |
|
|
if (ap->nr_pmp_links)
|
1174 |
|
|
return ap->pmp_link;
|
1175 |
|
|
return &ap->link;
|
1176 |
|
|
}
|
1177 |
|
|
|
1178 |
|
|
static inline struct ata_link *ata_port_next_link(struct ata_link *link)
|
1179 |
|
|
{
|
1180 |
|
|
struct ata_port *ap = link->ap;
|
1181 |
|
|
|
1182 |
|
|
if (link == &ap->link) {
|
1183 |
|
|
if (!ap->nr_pmp_links)
|
1184 |
|
|
return NULL;
|
1185 |
|
|
return ap->pmp_link;
|
1186 |
|
|
}
|
1187 |
|
|
|
1188 |
|
|
if (++link - ap->pmp_link < ap->nr_pmp_links)
|
1189 |
|
|
return link;
|
1190 |
|
|
return NULL;
|
1191 |
|
|
}
|
1192 |
|
|
|
1193 |
|
|
#define __ata_port_for_each_link(lk, ap) \
|
1194 |
|
|
for ((lk) = &(ap)->link; (lk); (lk) = ata_port_next_link(lk))
|
1195 |
|
|
|
1196 |
|
|
#define ata_port_for_each_link(link, ap) \
|
1197 |
|
|
for ((link) = ata_port_first_link(ap); (link); \
|
1198 |
|
|
(link) = ata_port_next_link(link))
|
1199 |
|
|
|
1200 |
|
|
#define ata_link_for_each_dev(dev, link) \
|
1201 |
|
|
for ((dev) = (link)->device; \
|
1202 |
|
|
(dev) < (link)->device + ata_link_max_devices(link) || ((dev) = NULL); \
|
1203 |
|
|
(dev)++)
|
1204 |
|
|
|
1205 |
|
|
#define ata_link_for_each_dev_reverse(dev, link) \
|
1206 |
|
|
for ((dev) = (link)->device + ata_link_max_devices(link) - 1; \
|
1207 |
|
|
(dev) >= (link)->device || ((dev) = NULL); (dev)--)
|
1208 |
|
|
|
1209 |
|
|
static inline u8 ata_chk_status(struct ata_port *ap)
|
1210 |
|
|
{
|
1211 |
|
|
return ap->ops->check_status(ap);
|
1212 |
|
|
}
|
1213 |
|
|
|
1214 |
|
|
/**
|
1215 |
|
|
* ata_ncq_enabled - Test whether NCQ is enabled
|
1216 |
|
|
* @dev: ATA device to test for
|
1217 |
|
|
*
|
1218 |
|
|
* LOCKING:
|
1219 |
|
|
* spin_lock_irqsave(host lock)
|
1220 |
|
|
*
|
1221 |
|
|
* RETURNS:
|
1222 |
|
|
* 1 if NCQ is enabled for @dev, 0 otherwise.
|
1223 |
|
|
*/
|
1224 |
|
|
static inline int ata_ncq_enabled(struct ata_device *dev)
|
1225 |
|
|
{
|
1226 |
|
|
return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF |
|
1227 |
|
|
ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
|
1228 |
|
|
}
|
1229 |
|
|
|
1230 |
|
|
/**
|
1231 |
|
|
* ata_pause - Flush writes and pause 400 nanoseconds.
|
1232 |
|
|
* @ap: Port to wait for.
|
1233 |
|
|
*
|
1234 |
|
|
* LOCKING:
|
1235 |
|
|
* Inherited from caller.
|
1236 |
|
|
*/
|
1237 |
|
|
|
1238 |
|
|
static inline void ata_pause(struct ata_port *ap)
|
1239 |
|
|
{
|
1240 |
|
|
ata_altstatus(ap);
|
1241 |
|
|
ndelay(400);
|
1242 |
|
|
}
|
1243 |
|
|
|
1244 |
|
|
|
1245 |
|
|
/**
|
1246 |
|
|
* ata_busy_wait - Wait for a port status register
|
1247 |
|
|
* @ap: Port to wait for.
|
1248 |
|
|
* @bits: bits that must be clear
|
1249 |
|
|
* @max: number of 10uS waits to perform
|
1250 |
|
|
*
|
1251 |
|
|
* Waits up to max*10 microseconds for the selected bits in the port's
|
1252 |
|
|
* status register to be cleared.
|
1253 |
|
|
* Returns final value of status register.
|
1254 |
|
|
*
|
1255 |
|
|
* LOCKING:
|
1256 |
|
|
* Inherited from caller.
|
1257 |
|
|
*/
|
1258 |
|
|
|
1259 |
|
|
static inline u8 ata_busy_wait(struct ata_port *ap, unsigned int bits,
|
1260 |
|
|
unsigned int max)
|
1261 |
|
|
{
|
1262 |
|
|
u8 status;
|
1263 |
|
|
|
1264 |
|
|
do {
|
1265 |
|
|
udelay(10);
|
1266 |
|
|
status = ata_chk_status(ap);
|
1267 |
|
|
max--;
|
1268 |
|
|
} while (status != 0xff && (status & bits) && (max > 0));
|
1269 |
|
|
|
1270 |
|
|
return status;
|
1271 |
|
|
}
|
1272 |
|
|
|
1273 |
|
|
|
1274 |
|
|
/**
|
1275 |
|
|
* ata_wait_idle - Wait for a port to be idle.
|
1276 |
|
|
* @ap: Port to wait for.
|
1277 |
|
|
*
|
1278 |
|
|
* Waits up to 10ms for port's BUSY and DRQ signals to clear.
|
1279 |
|
|
* Returns final value of status register.
|
1280 |
|
|
*
|
1281 |
|
|
* LOCKING:
|
1282 |
|
|
* Inherited from caller.
|
1283 |
|
|
*/
|
1284 |
|
|
|
1285 |
|
|
static inline u8 ata_wait_idle(struct ata_port *ap)
|
1286 |
|
|
{
|
1287 |
|
|
u8 status = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
|
1288 |
|
|
|
1289 |
|
|
#ifdef ATA_DEBUG
|
1290 |
|
|
if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
|
1291 |
|
|
ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n",
|
1292 |
|
|
status);
|
1293 |
|
|
#endif
|
1294 |
|
|
|
1295 |
|
|
return status;
|
1296 |
|
|
}
|
1297 |
|
|
|
1298 |
|
|
static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
|
1299 |
|
|
{
|
1300 |
|
|
qc->tf.ctl |= ATA_NIEN;
|
1301 |
|
|
}
|
1302 |
|
|
|
1303 |
|
|
static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
|
1304 |
|
|
unsigned int tag)
|
1305 |
|
|
{
|
1306 |
|
|
if (likely(ata_tag_valid(tag)))
|
1307 |
|
|
return &ap->qcmd[tag];
|
1308 |
|
|
return NULL;
|
1309 |
|
|
}
|
1310 |
|
|
|
1311 |
|
|
static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
|
1312 |
|
|
unsigned int tag)
|
1313 |
|
|
{
|
1314 |
|
|
struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
|
1315 |
|
|
|
1316 |
|
|
if (unlikely(!qc) || !ap->ops->error_handler)
|
1317 |
|
|
return qc;
|
1318 |
|
|
|
1319 |
|
|
if ((qc->flags & (ATA_QCFLAG_ACTIVE |
|
1320 |
|
|
ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE)
|
1321 |
|
|
return qc;
|
1322 |
|
|
|
1323 |
|
|
return NULL;
|
1324 |
|
|
}
|
1325 |
|
|
|
1326 |
|
|
static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
|
1327 |
|
|
{
|
1328 |
|
|
memset(tf, 0, sizeof(*tf));
|
1329 |
|
|
|
1330 |
|
|
tf->ctl = dev->link->ap->ctl;
|
1331 |
|
|
if (dev->devno == 0)
|
1332 |
|
|
tf->device = ATA_DEVICE_OBS;
|
1333 |
|
|
else
|
1334 |
|
|
tf->device = ATA_DEVICE_OBS | ATA_DEV1;
|
1335 |
|
|
}
|
1336 |
|
|
|
1337 |
|
|
static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
|
1338 |
|
|
{
|
1339 |
|
|
qc->dma_dir = DMA_NONE;
|
1340 |
|
|
qc->__sg = NULL;
|
1341 |
|
|
qc->flags = 0;
|
1342 |
|
|
qc->cursg = NULL;
|
1343 |
|
|
qc->cursg_ofs = 0;
|
1344 |
|
|
qc->nbytes = qc->curbytes = 0;
|
1345 |
|
|
qc->n_elem = 0;
|
1346 |
|
|
qc->n_iter = 0;
|
1347 |
|
|
qc->err_mask = 0;
|
1348 |
|
|
qc->pad_len = 0;
|
1349 |
|
|
qc->sect_size = ATA_SECT_SIZE;
|
1350 |
|
|
|
1351 |
|
|
ata_tf_init(qc->dev, &qc->tf);
|
1352 |
|
|
|
1353 |
|
|
/* init result_tf such that it indicates normal completion */
|
1354 |
|
|
qc->result_tf.command = ATA_DRDY;
|
1355 |
|
|
qc->result_tf.feature = 0;
|
1356 |
|
|
}
|
1357 |
|
|
|
1358 |
|
|
static inline int ata_try_flush_cache(const struct ata_device *dev)
|
1359 |
|
|
{
|
1360 |
|
|
return ata_id_wcache_enabled(dev->id) ||
|
1361 |
|
|
ata_id_has_flush(dev->id) ||
|
1362 |
|
|
ata_id_has_flush_ext(dev->id);
|
1363 |
|
|
}
|
1364 |
|
|
|
1365 |
|
|
static inline unsigned int ac_err_mask(u8 status)
|
1366 |
|
|
{
|
1367 |
|
|
if (status & (ATA_BUSY | ATA_DRQ))
|
1368 |
|
|
return AC_ERR_HSM;
|
1369 |
|
|
if (status & (ATA_ERR | ATA_DF))
|
1370 |
|
|
return AC_ERR_DEV;
|
1371 |
|
|
return 0;
|
1372 |
|
|
}
|
1373 |
|
|
|
1374 |
|
|
static inline unsigned int __ac_err_mask(u8 status)
|
1375 |
|
|
{
|
1376 |
|
|
unsigned int mask = ac_err_mask(status);
|
1377 |
|
|
if (mask == 0)
|
1378 |
|
|
return AC_ERR_OTHER;
|
1379 |
|
|
return mask;
|
1380 |
|
|
}
|
1381 |
|
|
|
1382 |
|
|
static inline int ata_pad_alloc(struct ata_port *ap, struct device *dev)
|
1383 |
|
|
{
|
1384 |
|
|
ap->pad_dma = 0;
|
1385 |
|
|
ap->pad = dmam_alloc_coherent(dev, ATA_DMA_PAD_BUF_SZ,
|
1386 |
|
|
&ap->pad_dma, GFP_KERNEL);
|
1387 |
|
|
return (ap->pad == NULL) ? -ENOMEM : 0;
|
1388 |
|
|
}
|
1389 |
|
|
|
1390 |
|
|
static inline void ata_pad_free(struct ata_port *ap, struct device *dev)
|
1391 |
|
|
{
|
1392 |
|
|
dmam_free_coherent(dev, ATA_DMA_PAD_BUF_SZ, ap->pad, ap->pad_dma);
|
1393 |
|
|
}
|
1394 |
|
|
|
1395 |
|
|
static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
|
1396 |
|
|
{
|
1397 |
|
|
return *(struct ata_port **)&host->hostdata[0];
|
1398 |
|
|
}
|
1399 |
|
|
|
1400 |
|
|
#endif /* __LINUX_LIBATA_H__ */
|