1552 lines
48 KiB
C
1552 lines
48 KiB
C
/*
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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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#include <linux/cdrom.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_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1,
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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_DMADIR = (1 << 10), /* device requires DMADIR */
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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_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */
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ATA_DFLAG_INIT_MASK = (1 << 24) - 1,
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ATA_DFLAG_DETACH = (1 << 24),
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ATA_DFLAG_DETACHED = (1 << 25),
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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_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_DMAMAP = (1 << 1), /* SG table is DMA mapped */
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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_RETRY = (1 << 7), /* retry after failure */
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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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/* Spec mandates to wait for ">= 2ms" before checking status
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* after reset. We wait 150ms, because that was the magic
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* delay used for ATAPI devices in Hale Landis's ATADRVR, for
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* the period of time between when the ATA command register is
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* written, and then status is checked. Because waiting for
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* "a while" before checking status is fine, post SRST, we
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* perform this magic delay here as well.
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*
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* Old drivers/ide uses the 2mS rule and then waits for ready.
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*/
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ATA_WAIT_AFTER_RESET_MSECS = 150,
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/* If PMP is supported, we have to do follow-up SRST. As some
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* PMPs don't send D2H Reg FIS after hardreset, LLDs are
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* advised to wait only for the following duration before
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* doing SRST.
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*/
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ATA_TMOUT_PMP_SRST_WAIT = 1 * HZ,
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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 long bitmap
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*/
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ATA_NR_PIO_MODES = 7,
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ATA_NR_MWDMA_MODES = 5,
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ATA_NR_UDMA_MODES = 8,
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ATA_SHIFT_PIO = 0,
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ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES,
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ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES,
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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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/* 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), /* meaningful only in ->prereset */
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ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */
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ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
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ATA_EH_ENABLE_LINK = (1 << 3),
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ATA_EH_LPM = (1 << 4), /* link power management action */
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ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE,
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/* ata_eh_info->flags */
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ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */
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ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */
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ATA_EHI_QUIET = (1 << 3), /* be quiet */
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ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */
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ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */
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ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */
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ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */
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ATA_EHI_POST_SETMODE = (1 << 20), /* revaildating after setmode */
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ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
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/* max tries if error condition is still set after ->error_handler */
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ATA_EH_MAX_TRIES = 5,
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/* how hard are we gonna try to probe/recover devices */
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ATA_PROBE_MAX_TRIES = 3,
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ATA_EH_DEV_TRIES = 3,
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ATA_EH_PMP_TRIES = 5,
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ATA_EH_PMP_LINK_TRIES = 3,
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SATA_PMP_SCR_TIMEOUT = 250,
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/* Horkage types. May be set by libata or controller on drives
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(some horkage may be drive/controller pair dependant */
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ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */
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ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */
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ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */
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ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */
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ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */
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ATA_HORKAGE_SKIP_PM = (1 << 5), /* Skip PM operations */
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ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */
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ATA_HORKAGE_IPM = (1 << 7), /* Link PM problems */
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ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */
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ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */
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/* DMA mask for user DMA control: User visible values; DO NOT
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renumber */
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ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */
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ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */
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ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */
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/* ATAPI command types */
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ATAPI_READ = 0, /* READs */
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ATAPI_WRITE = 1, /* WRITEs */
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ATAPI_READ_CD = 2, /* READ CD [MSF] */
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ATAPI_PASS_THRU = 3, /* SAT pass-thru */
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ATAPI_MISC = 4, /* the rest */
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/* Timing constants */
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ATA_TIMING_SETUP = (1 << 0),
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ATA_TIMING_ACT8B = (1 << 1),
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ATA_TIMING_REC8B = (1 << 2),
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ATA_TIMING_CYC8B = (1 << 3),
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ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
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ATA_TIMING_CYC8B,
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ATA_TIMING_ACTIVE = (1 << 4),
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ATA_TIMING_RECOVER = (1 << 5),
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ATA_TIMING_CYCLE = (1 << 6),
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ATA_TIMING_UDMA = (1 << 7),
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ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
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ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
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ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
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ATA_TIMING_CYCLE | ATA_TIMING_UDMA,
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};
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enum ata_xfer_mask {
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ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1)
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<< ATA_SHIFT_PIO,
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ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1)
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<< ATA_SHIFT_MWDMA,
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ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1)
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<< ATA_SHIFT_UDMA,
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};
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enum hsm_task_states {
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HSM_ST_IDLE, /* no command on going */
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HSM_ST_FIRST, /* (waiting the device to)
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write CDB or first data block */
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HSM_ST, /* (waiting the device to) transfer data */
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HSM_ST_LAST, /* (waiting the device to) complete command */
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|
HSM_ST_ERR, /* error */
|
|
};
|
|
|
|
enum ata_completion_errors {
|
|
AC_ERR_DEV = (1 << 0), /* device reported error */
|
|
AC_ERR_HSM = (1 << 1), /* host state machine violation */
|
|
AC_ERR_TIMEOUT = (1 << 2), /* timeout */
|
|
AC_ERR_MEDIA = (1 << 3), /* media error */
|
|
AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */
|
|
AC_ERR_HOST_BUS = (1 << 5), /* host bus error */
|
|
AC_ERR_SYSTEM = (1 << 6), /* system error */
|
|
AC_ERR_INVALID = (1 << 7), /* invalid argument */
|
|
AC_ERR_OTHER = (1 << 8), /* unknown */
|
|
AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */
|
|
AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */
|
|
};
|
|
|
|
/* forward declarations */
|
|
struct scsi_device;
|
|
struct ata_port_operations;
|
|
struct ata_port;
|
|
struct ata_link;
|
|
struct ata_queued_cmd;
|
|
|
|
/* typedefs */
|
|
typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
|
|
typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
|
|
typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
|
|
unsigned long deadline);
|
|
typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
|
|
|
|
/*
|
|
* host pm policy: If you alter this, you also need to alter libata-scsi.c
|
|
* (for the ascii descriptions)
|
|
*/
|
|
enum link_pm {
|
|
NOT_AVAILABLE,
|
|
MIN_POWER,
|
|
MAX_PERFORMANCE,
|
|
MEDIUM_POWER,
|
|
};
|
|
extern struct device_attribute dev_attr_link_power_management_policy;
|
|
|
|
#ifdef CONFIG_ATA_SFF
|
|
struct ata_ioports {
|
|
void __iomem *cmd_addr;
|
|
void __iomem *data_addr;
|
|
void __iomem *error_addr;
|
|
void __iomem *feature_addr;
|
|
void __iomem *nsect_addr;
|
|
void __iomem *lbal_addr;
|
|
void __iomem *lbam_addr;
|
|
void __iomem *lbah_addr;
|
|
void __iomem *device_addr;
|
|
void __iomem *status_addr;
|
|
void __iomem *command_addr;
|
|
void __iomem *altstatus_addr;
|
|
void __iomem *ctl_addr;
|
|
void __iomem *bmdma_addr;
|
|
void __iomem *scr_addr;
|
|
};
|
|
#endif /* CONFIG_ATA_SFF */
|
|
|
|
struct ata_host {
|
|
spinlock_t lock;
|
|
struct device *dev;
|
|
void __iomem * const *iomap;
|
|
unsigned int n_ports;
|
|
void *private_data;
|
|
struct ata_port_operations *ops;
|
|
unsigned long flags;
|
|
#ifdef CONFIG_ATA_ACPI
|
|
acpi_handle acpi_handle;
|
|
#endif
|
|
struct ata_port *simplex_claimed; /* channel owning the DMA */
|
|
struct ata_port *ports[0];
|
|
};
|
|
|
|
struct ata_queued_cmd {
|
|
struct ata_port *ap;
|
|
struct ata_device *dev;
|
|
|
|
struct scsi_cmnd *scsicmd;
|
|
void (*scsidone)(struct scsi_cmnd *);
|
|
|
|
struct ata_taskfile tf;
|
|
u8 cdb[ATAPI_CDB_LEN];
|
|
|
|
unsigned long flags; /* ATA_QCFLAG_xxx */
|
|
unsigned int tag;
|
|
unsigned int n_elem;
|
|
|
|
int dma_dir;
|
|
|
|
unsigned int sect_size;
|
|
|
|
unsigned int nbytes;
|
|
unsigned int extrabytes;
|
|
unsigned int curbytes;
|
|
|
|
struct scatterlist *cursg;
|
|
unsigned int cursg_ofs;
|
|
|
|
struct scatterlist sgent;
|
|
|
|
struct scatterlist *sg;
|
|
|
|
unsigned int err_mask;
|
|
struct ata_taskfile result_tf;
|
|
ata_qc_cb_t complete_fn;
|
|
|
|
void *private_data;
|
|
void *lldd_task;
|
|
};
|
|
|
|
struct ata_port_stats {
|
|
unsigned long unhandled_irq;
|
|
unsigned long idle_irq;
|
|
unsigned long rw_reqbuf;
|
|
};
|
|
|
|
struct ata_ering_entry {
|
|
unsigned int eflags;
|
|
unsigned int err_mask;
|
|
u64 timestamp;
|
|
};
|
|
|
|
struct ata_ering {
|
|
int cursor;
|
|
struct ata_ering_entry ring[ATA_ERING_SIZE];
|
|
};
|
|
|
|
struct ata_device {
|
|
struct ata_link *link;
|
|
unsigned int devno; /* 0 or 1 */
|
|
unsigned long flags; /* ATA_DFLAG_xxx */
|
|
unsigned int horkage; /* List of broken features */
|
|
struct scsi_device *sdev; /* attached SCSI device */
|
|
#ifdef CONFIG_ATA_ACPI
|
|
acpi_handle acpi_handle;
|
|
union acpi_object *gtf_cache;
|
|
#endif
|
|
/* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */
|
|
u64 n_sectors; /* size of device, if ATA */
|
|
unsigned int class; /* ATA_DEV_xxx */
|
|
|
|
union {
|
|
u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
|
|
u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
|
|
};
|
|
|
|
u8 pio_mode;
|
|
u8 dma_mode;
|
|
u8 xfer_mode;
|
|
unsigned int xfer_shift; /* ATA_SHIFT_xxx */
|
|
|
|
unsigned int multi_count; /* sectors count for
|
|
READ/WRITE MULTIPLE */
|
|
unsigned int max_sectors; /* per-device max sectors */
|
|
unsigned int cdb_len;
|
|
|
|
/* per-dev xfer mask */
|
|
unsigned long pio_mask;
|
|
unsigned long mwdma_mask;
|
|
unsigned long udma_mask;
|
|
|
|
/* for CHS addressing */
|
|
u16 cylinders; /* Number of cylinders */
|
|
u16 heads; /* Number of heads */
|
|
u16 sectors; /* Number of sectors per track */
|
|
|
|
/* error history */
|
|
struct ata_ering ering;
|
|
int spdn_cnt;
|
|
};
|
|
|
|
/* Offset into struct ata_device. Fields above it are maintained
|
|
* acress device init. Fields below are zeroed.
|
|
*/
|
|
#define ATA_DEVICE_CLEAR_OFFSET offsetof(struct ata_device, n_sectors)
|
|
|
|
struct ata_eh_info {
|
|
struct ata_device *dev; /* offending device */
|
|
u32 serror; /* SError from LLDD */
|
|
unsigned int err_mask; /* port-wide err_mask */
|
|
unsigned int action; /* ATA_EH_* action mask */
|
|
unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */
|
|
unsigned int flags; /* ATA_EHI_* flags */
|
|
|
|
unsigned int probe_mask;
|
|
|
|
char desc[ATA_EH_DESC_LEN];
|
|
int desc_len;
|
|
};
|
|
|
|
struct ata_eh_context {
|
|
struct ata_eh_info i;
|
|
int tries[ATA_MAX_DEVICES];
|
|
unsigned int classes[ATA_MAX_DEVICES];
|
|
unsigned int did_probe_mask;
|
|
unsigned int saved_ncq_enabled;
|
|
u8 saved_xfer_mode[ATA_MAX_DEVICES];
|
|
};
|
|
|
|
struct ata_acpi_drive
|
|
{
|
|
u32 pio;
|
|
u32 dma;
|
|
} __packed;
|
|
|
|
struct ata_acpi_gtm {
|
|
struct ata_acpi_drive drive[2];
|
|
u32 flags;
|
|
} __packed;
|
|
|
|
struct ata_link {
|
|
struct ata_port *ap;
|
|
int pmp; /* port multiplier port # */
|
|
|
|
unsigned int active_tag; /* active tag on this link */
|
|
u32 sactive; /* active NCQ commands */
|
|
|
|
unsigned int flags; /* ATA_LFLAG_xxx */
|
|
|
|
unsigned int hw_sata_spd_limit;
|
|
unsigned int sata_spd_limit;
|
|
unsigned int sata_spd; /* current SATA PHY speed */
|
|
|
|
/* record runtime error info, protected by host_set lock */
|
|
struct ata_eh_info eh_info;
|
|
/* EH context */
|
|
struct ata_eh_context eh_context;
|
|
|
|
struct ata_device device[ATA_MAX_DEVICES];
|
|
};
|
|
|
|
struct ata_port {
|
|
struct Scsi_Host *scsi_host; /* our co-allocated scsi host */
|
|
struct ata_port_operations *ops;
|
|
spinlock_t *lock;
|
|
unsigned long flags; /* ATA_FLAG_xxx */
|
|
unsigned int pflags; /* ATA_PFLAG_xxx */
|
|
unsigned int print_id; /* user visible unique port ID */
|
|
unsigned int port_no; /* 0 based port no. inside the host */
|
|
|
|
struct ata_prd *prd; /* our SG list */
|
|
dma_addr_t prd_dma; /* and its DMA mapping */
|
|
|
|
#ifdef CONFIG_ATA_SFF
|
|
struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */
|
|
#endif /* CONFIG_ATA_SFF */
|
|
|
|
u8 ctl; /* cache of ATA control register */
|
|
u8 last_ctl; /* Cache last written value */
|
|
unsigned int pio_mask;
|
|
unsigned int mwdma_mask;
|
|
unsigned int udma_mask;
|
|
unsigned int cbl; /* cable type; ATA_CBL_xxx */
|
|
|
|
struct ata_queued_cmd qcmd[ATA_MAX_QUEUE];
|
|
unsigned long qc_allocated;
|
|
unsigned int qc_active;
|
|
int nr_active_links; /* #links with active qcs */
|
|
|
|
struct ata_link link; /* host default link */
|
|
|
|
int nr_pmp_links; /* nr of available PMP links */
|
|
struct ata_link *pmp_link; /* array of PMP links */
|
|
struct ata_link *excl_link; /* for PMP qc exclusion */
|
|
|
|
struct ata_port_stats stats;
|
|
struct ata_host *host;
|
|
struct device *dev;
|
|
|
|
void *port_task_data;
|
|
struct delayed_work port_task;
|
|
struct delayed_work hotplug_task;
|
|
struct work_struct scsi_rescan_task;
|
|
|
|
unsigned int hsm_task_state;
|
|
|
|
u32 msg_enable;
|
|
struct list_head eh_done_q;
|
|
wait_queue_head_t eh_wait_q;
|
|
int eh_tries;
|
|
|
|
pm_message_t pm_mesg;
|
|
int *pm_result;
|
|
enum link_pm pm_policy;
|
|
|
|
struct timer_list fastdrain_timer;
|
|
unsigned long fastdrain_cnt;
|
|
|
|
void *private_data;
|
|
|
|
#ifdef CONFIG_ATA_ACPI
|
|
acpi_handle acpi_handle;
|
|
struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */
|
|
#endif
|
|
u8 sector_buf[ATA_SECT_SIZE]; /* owned by EH */
|
|
};
|
|
|
|
/* The following initializer overrides a method to NULL whether one of
|
|
* its parent has the method defined or not. This is equivalent to
|
|
* ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant
|
|
* expression and thus can't be used as an initializer.
|
|
*/
|
|
#define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
|
|
|
|
struct ata_port_operations {
|
|
/*
|
|
* Command execution
|
|
*/
|
|
int (*qc_defer)(struct ata_queued_cmd *qc);
|
|
int (*check_atapi_dma)(struct ata_queued_cmd *qc);
|
|
void (*qc_prep)(struct ata_queued_cmd *qc);
|
|
unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
|
|
bool (*qc_fill_rtf)(struct ata_queued_cmd *qc);
|
|
|
|
/*
|
|
* Configuration and exception handling
|
|
*/
|
|
int (*cable_detect)(struct ata_port *ap);
|
|
unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask);
|
|
void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
|
|
void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
|
|
int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
|
|
|
|
void (*dev_config)(struct ata_device *dev);
|
|
|
|
void (*freeze)(struct ata_port *ap);
|
|
void (*thaw)(struct ata_port *ap);
|
|
ata_prereset_fn_t prereset;
|
|
ata_reset_fn_t softreset;
|
|
ata_reset_fn_t hardreset;
|
|
ata_postreset_fn_t postreset;
|
|
ata_prereset_fn_t pmp_prereset;
|
|
ata_reset_fn_t pmp_softreset;
|
|
ata_reset_fn_t pmp_hardreset;
|
|
ata_postreset_fn_t pmp_postreset;
|
|
void (*error_handler)(struct ata_port *ap);
|
|
void (*post_internal_cmd)(struct ata_queued_cmd *qc);
|
|
|
|
/*
|
|
* Optional features
|
|
*/
|
|
int (*scr_read)(struct ata_port *ap, unsigned int sc_reg, u32 *val);
|
|
int (*scr_write)(struct ata_port *ap, unsigned int sc_reg, u32 val);
|
|
void (*pmp_attach)(struct ata_port *ap);
|
|
void (*pmp_detach)(struct ata_port *ap);
|
|
int (*enable_pm)(struct ata_port *ap, enum link_pm policy);
|
|
void (*disable_pm)(struct ata_port *ap);
|
|
|
|
/*
|
|
* Start, stop, suspend and resume
|
|
*/
|
|
int (*port_suspend)(struct ata_port *ap, pm_message_t mesg);
|
|
int (*port_resume)(struct ata_port *ap);
|
|
int (*port_start)(struct ata_port *ap);
|
|
void (*port_stop)(struct ata_port *ap);
|
|
void (*host_stop)(struct ata_host *host);
|
|
|
|
#ifdef CONFIG_ATA_SFF
|
|
/*
|
|
* SFF / taskfile oriented ops
|
|
*/
|
|
void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
|
|
u8 (*sff_check_status)(struct ata_port *ap);
|
|
u8 (*sff_check_altstatus)(struct ata_port *ap);
|
|
void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
|
|
void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
|
|
void (*sff_exec_command)(struct ata_port *ap,
|
|
const struct ata_taskfile *tf);
|
|
unsigned int (*sff_data_xfer)(struct ata_device *dev,
|
|
unsigned char *buf, unsigned int buflen, int rw);
|
|
u8 (*sff_irq_on)(struct ata_port *);
|
|
void (*sff_irq_clear)(struct ata_port *);
|
|
|
|
void (*bmdma_setup)(struct ata_queued_cmd *qc);
|
|
void (*bmdma_start)(struct ata_queued_cmd *qc);
|
|
void (*bmdma_stop)(struct ata_queued_cmd *qc);
|
|
u8 (*bmdma_status)(struct ata_port *ap);
|
|
#endif /* CONFIG_ATA_SFF */
|
|
|
|
/*
|
|
* Obsolete
|
|
*/
|
|
void (*phy_reset)(struct ata_port *ap);
|
|
void (*eng_timeout)(struct ata_port *ap);
|
|
|
|
/*
|
|
* ->inherits must be the last field and all the preceding
|
|
* fields must be pointers.
|
|
*/
|
|
const struct ata_port_operations *inherits;
|
|
};
|
|
|
|
struct ata_port_info {
|
|
unsigned long flags;
|
|
unsigned long link_flags;
|
|
unsigned long pio_mask;
|
|
unsigned long mwdma_mask;
|
|
unsigned long udma_mask;
|
|
struct ata_port_operations *port_ops;
|
|
void *private_data;
|
|
};
|
|
|
|
struct ata_timing {
|
|
unsigned short mode; /* ATA mode */
|
|
unsigned short setup; /* t1 */
|
|
unsigned short act8b; /* t2 for 8-bit I/O */
|
|
unsigned short rec8b; /* t2i for 8-bit I/O */
|
|
unsigned short cyc8b; /* t0 for 8-bit I/O */
|
|
unsigned short active; /* t2 or tD */
|
|
unsigned short recover; /* t2i or tK */
|
|
unsigned short cycle; /* t0 */
|
|
unsigned short udma; /* t2CYCTYP/2 */
|
|
};
|
|
|
|
#define FIT(v, vmin, vmax) max_t(short, min_t(short, v, vmax), vmin)
|
|
|
|
/*
|
|
* Core layer - drivers/ata/libata-core.c
|
|
*/
|
|
extern const unsigned long sata_deb_timing_normal[];
|
|
extern const unsigned long sata_deb_timing_hotplug[];
|
|
extern const unsigned long sata_deb_timing_long[];
|
|
|
|
extern struct ata_port_operations ata_dummy_port_ops;
|
|
extern const struct ata_port_info ata_dummy_port_info;
|
|
|
|
static inline const unsigned long *
|
|
sata_ehc_deb_timing(struct ata_eh_context *ehc)
|
|
{
|
|
if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
|
|
return sata_deb_timing_hotplug;
|
|
else
|
|
return sata_deb_timing_normal;
|
|
}
|
|
|
|
static inline int ata_port_is_dummy(struct ata_port *ap)
|
|
{
|
|
return ap->ops == &ata_dummy_port_ops;
|
|
}
|
|
|
|
extern void ata_port_probe(struct ata_port *);
|
|
extern int sata_set_spd(struct ata_link *link);
|
|
extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
|
|
extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
|
|
int (*check_ready)(struct ata_link *link));
|
|
extern int sata_link_debounce(struct ata_link *link,
|
|
const unsigned long *params, unsigned long deadline);
|
|
extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
|
|
unsigned long deadline);
|
|
extern int sata_link_hardreset(struct ata_link *link,
|
|
const unsigned long *timing, unsigned long deadline,
|
|
bool *online, int (*check_ready)(struct ata_link *));
|
|
extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
|
|
unsigned long deadline);
|
|
extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
|
|
extern void ata_port_disable(struct ata_port *);
|
|
|
|
extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
|
|
extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
|
|
const struct ata_port_info * const * ppi, int n_ports);
|
|
extern int ata_host_start(struct ata_host *host);
|
|
extern int ata_host_register(struct ata_host *host,
|
|
struct scsi_host_template *sht);
|
|
extern int ata_host_activate(struct ata_host *host, int irq,
|
|
irq_handler_t irq_handler, unsigned long irq_flags,
|
|
struct scsi_host_template *sht);
|
|
extern void ata_host_detach(struct ata_host *host);
|
|
extern void ata_host_init(struct ata_host *, struct device *,
|
|
unsigned long, struct ata_port_operations *);
|
|
extern int ata_scsi_detect(struct scsi_host_template *sht);
|
|
extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
|
|
extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *));
|
|
extern void ata_sas_port_destroy(struct ata_port *);
|
|
extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
|
|
struct ata_port_info *, struct Scsi_Host *);
|
|
extern int ata_sas_port_init(struct ata_port *);
|
|
extern int ata_sas_port_start(struct ata_port *ap);
|
|
extern void ata_sas_port_stop(struct ata_port *ap);
|
|
extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
|
|
extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *),
|
|
struct ata_port *ap);
|
|
extern int sata_scr_valid(struct ata_link *link);
|
|
extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
|
|
extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
|
|
extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
|
|
extern int ata_link_online(struct ata_link *link);
|
|
extern int ata_link_offline(struct ata_link *link);
|
|
#ifdef CONFIG_PM
|
|
extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
|
|
extern void ata_host_resume(struct ata_host *host);
|
|
#endif
|
|
extern int ata_ratelimit(void);
|
|
extern u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val,
|
|
unsigned long interval_msec,
|
|
unsigned long timeout_msec);
|
|
extern int atapi_cmd_type(u8 opcode);
|
|
extern void ata_tf_to_fis(const struct ata_taskfile *tf,
|
|
u8 pmp, int is_cmd, u8 *fis);
|
|
extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
|
|
extern unsigned long ata_pack_xfermask(unsigned long pio_mask,
|
|
unsigned long mwdma_mask, unsigned long udma_mask);
|
|
extern void ata_unpack_xfermask(unsigned long xfer_mask,
|
|
unsigned long *pio_mask, unsigned long *mwdma_mask,
|
|
unsigned long *udma_mask);
|
|
extern u8 ata_xfer_mask2mode(unsigned long xfer_mask);
|
|
extern unsigned long ata_xfer_mode2mask(u8 xfer_mode);
|
|
extern int ata_xfer_mode2shift(unsigned long xfer_mode);
|
|
extern const char *ata_mode_string(unsigned long xfer_mask);
|
|
extern unsigned long ata_id_xfermask(const u16 *id);
|
|
extern int ata_port_start(struct ata_port *ap);
|
|
extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
|
|
extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);
|
|
extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
|
|
unsigned int n_elem);
|
|
extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
|
|
extern void ata_dev_disable(struct ata_device *adev);
|
|
extern void ata_id_string(const u16 *id, unsigned char *s,
|
|
unsigned int ofs, unsigned int len);
|
|
extern void ata_id_c_string(const u16 *id, unsigned char *s,
|
|
unsigned int ofs, unsigned int len);
|
|
extern void ata_qc_complete(struct ata_queued_cmd *qc);
|
|
extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active);
|
|
extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd,
|
|
void (*done)(struct scsi_cmnd *));
|
|
extern int ata_std_bios_param(struct scsi_device *sdev,
|
|
struct block_device *bdev,
|
|
sector_t capacity, int geom[]);
|
|
extern int ata_scsi_slave_config(struct scsi_device *sdev);
|
|
extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
|
|
extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
|
|
int queue_depth);
|
|
extern struct ata_device *ata_dev_pair(struct ata_device *adev);
|
|
extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
|
|
|
|
extern int ata_cable_40wire(struct ata_port *ap);
|
|
extern int ata_cable_80wire(struct ata_port *ap);
|
|
extern int ata_cable_sata(struct ata_port *ap);
|
|
extern int ata_cable_ignore(struct ata_port *ap);
|
|
extern int ata_cable_unknown(struct ata_port *ap);
|
|
|
|
/* Timing helpers */
|
|
extern unsigned int ata_pio_need_iordy(const struct ata_device *);
|
|
extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
|
|
extern int ata_timing_compute(struct ata_device *, unsigned short,
|
|
struct ata_timing *, int, int);
|
|
extern void ata_timing_merge(const struct ata_timing *,
|
|
const struct ata_timing *, struct ata_timing *,
|
|
unsigned int);
|
|
extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);
|
|
|
|
/* PCI */
|
|
#ifdef CONFIG_PCI
|
|
struct pci_dev;
|
|
|
|
struct pci_bits {
|
|
unsigned int reg; /* PCI config register to read */
|
|
unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
|
|
unsigned long mask;
|
|
unsigned long val;
|
|
};
|
|
|
|
extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
|
|
extern void ata_pci_remove_one(struct pci_dev *pdev);
|
|
|
|
#ifdef CONFIG_PM
|
|
extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
|
|
extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
|
|
extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
|
|
extern int ata_pci_device_resume(struct pci_dev *pdev);
|
|
#endif /* CONFIG_PM */
|
|
#endif /* CONFIG_PCI */
|
|
|
|
/*
|
|
* ACPI - drivers/ata/libata-acpi.c
|
|
*/
|
|
#ifdef CONFIG_ATA_ACPI
|
|
static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
|
|
{
|
|
if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
|
|
return &ap->__acpi_init_gtm;
|
|
return NULL;
|
|
}
|
|
int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
|
|
int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
|
|
unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev,
|
|
const struct ata_acpi_gtm *gtm);
|
|
int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm);
|
|
#else
|
|
static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline int ata_acpi_stm(const struct ata_port *ap,
|
|
struct ata_acpi_gtm *stm)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static inline int ata_acpi_gtm(const struct ata_port *ap,
|
|
struct ata_acpi_gtm *stm)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
|
|
const struct ata_acpi_gtm *gtm)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int ata_acpi_cbl_80wire(struct ata_port *ap,
|
|
const struct ata_acpi_gtm *gtm)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* EH - drivers/ata/libata-eh.c
|
|
*/
|
|
extern void ata_port_schedule_eh(struct ata_port *ap);
|
|
extern int ata_link_abort(struct ata_link *link);
|
|
extern int ata_port_abort(struct ata_port *ap);
|
|
extern int ata_port_freeze(struct ata_port *ap);
|
|
extern int sata_async_notification(struct ata_port *ap);
|
|
|
|
extern void ata_eh_freeze_port(struct ata_port *ap);
|
|
extern void ata_eh_thaw_port(struct ata_port *ap);
|
|
|
|
extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
|
|
extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
|
|
|
|
extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
|
|
ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
|
|
ata_postreset_fn_t postreset);
|
|
extern void ata_std_error_handler(struct ata_port *ap);
|
|
|
|
/*
|
|
* Base operations to inherit from and initializers for sht
|
|
*
|
|
* Operations
|
|
*
|
|
* base : Common to all libata drivers.
|
|
* sata : SATA controllers w/ native interface.
|
|
* pmp : SATA controllers w/ PMP support.
|
|
* sff : SFF ATA controllers w/o BMDMA support.
|
|
* bmdma : SFF ATA controllers w/ BMDMA support.
|
|
*
|
|
* sht initializers
|
|
*
|
|
* BASE : Common to all libata drivers. The user must set
|
|
* sg_tablesize and dma_boundary.
|
|
* PIO : SFF ATA controllers w/ only PIO support.
|
|
* BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and
|
|
* dma_boundary are set to BMDMA limits.
|
|
* NCQ : SATA controllers supporting NCQ. The user must set
|
|
* sg_tablesize, dma_boundary and can_queue.
|
|
*/
|
|
extern const struct ata_port_operations ata_base_port_ops;
|
|
extern const struct ata_port_operations sata_port_ops;
|
|
|
|
#define ATA_BASE_SHT(drv_name) \
|
|
.module = THIS_MODULE, \
|
|
.name = drv_name, \
|
|
.ioctl = ata_scsi_ioctl, \
|
|
.queuecommand = ata_scsi_queuecmd, \
|
|
.can_queue = ATA_DEF_QUEUE, \
|
|
.this_id = ATA_SHT_THIS_ID, \
|
|
.cmd_per_lun = ATA_SHT_CMD_PER_LUN, \
|
|
.emulated = ATA_SHT_EMULATED, \
|
|
.use_clustering = ATA_SHT_USE_CLUSTERING, \
|
|
.proc_name = drv_name, \
|
|
.slave_configure = ata_scsi_slave_config, \
|
|
.slave_destroy = ata_scsi_slave_destroy, \
|
|
.bios_param = ata_std_bios_param
|
|
|
|
#define ATA_NCQ_SHT(drv_name) \
|
|
ATA_BASE_SHT(drv_name), \
|
|
.change_queue_depth = ata_scsi_change_queue_depth
|
|
|
|
/*
|
|
* PMP helpers
|
|
*/
|
|
#ifdef CONFIG_SATA_PMP
|
|
static inline bool sata_pmp_supported(struct ata_port *ap)
|
|
{
|
|
return ap->flags & ATA_FLAG_PMP;
|
|
}
|
|
|
|
static inline bool sata_pmp_attached(struct ata_port *ap)
|
|
{
|
|
return ap->nr_pmp_links != 0;
|
|
}
|
|
|
|
static inline int ata_is_host_link(const struct ata_link *link)
|
|
{
|
|
return link == &link->ap->link;
|
|
}
|
|
#else /* CONFIG_SATA_PMP */
|
|
static inline bool sata_pmp_supported(struct ata_port *ap)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline bool sata_pmp_attached(struct ata_port *ap)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline int ata_is_host_link(const struct ata_link *link)
|
|
{
|
|
return 1;
|
|
}
|
|
#endif /* CONFIG_SATA_PMP */
|
|
|
|
static inline int sata_srst_pmp(struct ata_link *link)
|
|
{
|
|
if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
|
|
return SATA_PMP_CTRL_PORT;
|
|
return link->pmp;
|
|
}
|
|
|
|
/*
|
|
* printk helpers
|
|
*/
|
|
#define ata_port_printk(ap, lv, fmt, args...) \
|
|
printk("%sata%u: "fmt, lv, (ap)->print_id , ##args)
|
|
|
|
#define ata_link_printk(link, lv, fmt, args...) do { \
|
|
if (sata_pmp_attached((link)->ap)) \
|
|
printk("%sata%u.%02u: "fmt, lv, (link)->ap->print_id, \
|
|
(link)->pmp , ##args); \
|
|
else \
|
|
printk("%sata%u: "fmt, lv, (link)->ap->print_id , ##args); \
|
|
} while(0)
|
|
|
|
#define ata_dev_printk(dev, lv, fmt, args...) \
|
|
printk("%sata%u.%02u: "fmt, lv, (dev)->link->ap->print_id, \
|
|
(dev)->link->pmp + (dev)->devno , ##args)
|
|
|
|
/*
|
|
* ata_eh_info helpers
|
|
*/
|
|
extern void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...)
|
|
__attribute__ ((format (printf, 2, 3)));
|
|
extern void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...)
|
|
__attribute__ ((format (printf, 2, 3)));
|
|
extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
|
|
|
|
static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
|
|
{
|
|
ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
|
|
ehi->flags |= ATA_EHI_HOTPLUGGED;
|
|
ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;
|
|
ehi->err_mask |= AC_ERR_ATA_BUS;
|
|
}
|
|
|
|
/*
|
|
* port description helpers
|
|
*/
|
|
extern void ata_port_desc(struct ata_port *ap, const char *fmt, ...)
|
|
__attribute__ ((format (printf, 2, 3)));
|
|
#ifdef CONFIG_PCI
|
|
extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
|
|
const char *name);
|
|
#endif
|
|
|
|
static inline unsigned int ata_tag_valid(unsigned int tag)
|
|
{
|
|
return (tag < ATA_MAX_QUEUE) ? 1 : 0;
|
|
}
|
|
|
|
static inline unsigned int ata_tag_internal(unsigned int tag)
|
|
{
|
|
return tag == ATA_TAG_INTERNAL;
|
|
}
|
|
|
|
/*
|
|
* device helpers
|
|
*/
|
|
static inline unsigned int ata_class_enabled(unsigned int class)
|
|
{
|
|
return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
|
|
class == ATA_DEV_PMP || class == ATA_DEV_SEMB;
|
|
}
|
|
|
|
static inline unsigned int ata_class_disabled(unsigned int class)
|
|
{
|
|
return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
|
|
class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP;
|
|
}
|
|
|
|
static inline unsigned int ata_class_absent(unsigned int class)
|
|
{
|
|
return !ata_class_enabled(class) && !ata_class_disabled(class);
|
|
}
|
|
|
|
static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
|
|
{
|
|
return ata_class_enabled(dev->class);
|
|
}
|
|
|
|
static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
|
|
{
|
|
return ata_class_disabled(dev->class);
|
|
}
|
|
|
|
static inline unsigned int ata_dev_absent(const struct ata_device *dev)
|
|
{
|
|
return ata_class_absent(dev->class);
|
|
}
|
|
|
|
/*
|
|
* link helpers
|
|
*/
|
|
static inline int ata_link_max_devices(const struct ata_link *link)
|
|
{
|
|
if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS)
|
|
return 2;
|
|
return 1;
|
|
}
|
|
|
|
static inline int ata_link_active(struct ata_link *link)
|
|
{
|
|
return ata_tag_valid(link->active_tag) || link->sactive;
|
|
}
|
|
|
|
static inline struct ata_link *ata_port_first_link(struct ata_port *ap)
|
|
{
|
|
if (sata_pmp_attached(ap))
|
|
return ap->pmp_link;
|
|
return &ap->link;
|
|
}
|
|
|
|
static inline struct ata_link *ata_port_next_link(struct ata_link *link)
|
|
{
|
|
struct ata_port *ap = link->ap;
|
|
|
|
if (ata_is_host_link(link)) {
|
|
if (!sata_pmp_attached(ap))
|
|
return NULL;
|
|
return ap->pmp_link;
|
|
}
|
|
|
|
if (++link < ap->nr_pmp_links + ap->pmp_link)
|
|
return link;
|
|
return NULL;
|
|
}
|
|
|
|
#define __ata_port_for_each_link(lk, ap) \
|
|
for ((lk) = &(ap)->link; (lk); (lk) = ata_port_next_link(lk))
|
|
|
|
#define ata_port_for_each_link(link, ap) \
|
|
for ((link) = ata_port_first_link(ap); (link); \
|
|
(link) = ata_port_next_link(link))
|
|
|
|
#define ata_link_for_each_dev(dev, link) \
|
|
for ((dev) = (link)->device; \
|
|
(dev) < (link)->device + ata_link_max_devices(link) || ((dev) = NULL); \
|
|
(dev)++)
|
|
|
|
#define ata_link_for_each_dev_reverse(dev, link) \
|
|
for ((dev) = (link)->device + ata_link_max_devices(link) - 1; \
|
|
(dev) >= (link)->device || ((dev) = NULL); (dev)--)
|
|
|
|
/**
|
|
* ata_ncq_enabled - Test whether NCQ is enabled
|
|
* @dev: ATA device to test for
|
|
*
|
|
* LOCKING:
|
|
* spin_lock_irqsave(host lock)
|
|
*
|
|
* RETURNS:
|
|
* 1 if NCQ is enabled for @dev, 0 otherwise.
|
|
*/
|
|
static inline int ata_ncq_enabled(struct ata_device *dev)
|
|
{
|
|
return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF |
|
|
ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
|
|
}
|
|
|
|
static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
|
|
{
|
|
qc->tf.ctl |= ATA_NIEN;
|
|
}
|
|
|
|
static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
|
|
unsigned int tag)
|
|
{
|
|
if (likely(ata_tag_valid(tag)))
|
|
return &ap->qcmd[tag];
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
|
|
unsigned int tag)
|
|
{
|
|
struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
|
|
|
|
if (unlikely(!qc) || !ap->ops->error_handler)
|
|
return qc;
|
|
|
|
if ((qc->flags & (ATA_QCFLAG_ACTIVE |
|
|
ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE)
|
|
return qc;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc)
|
|
{
|
|
return qc->nbytes - min(qc->extrabytes, qc->nbytes);
|
|
}
|
|
|
|
static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
|
|
{
|
|
memset(tf, 0, sizeof(*tf));
|
|
|
|
tf->ctl = dev->link->ap->ctl;
|
|
if (dev->devno == 0)
|
|
tf->device = ATA_DEVICE_OBS;
|
|
else
|
|
tf->device = ATA_DEVICE_OBS | ATA_DEV1;
|
|
}
|
|
|
|
static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
|
|
{
|
|
qc->dma_dir = DMA_NONE;
|
|
qc->sg = NULL;
|
|
qc->flags = 0;
|
|
qc->cursg = NULL;
|
|
qc->cursg_ofs = 0;
|
|
qc->nbytes = qc->extrabytes = qc->curbytes = 0;
|
|
qc->n_elem = 0;
|
|
qc->err_mask = 0;
|
|
qc->sect_size = ATA_SECT_SIZE;
|
|
|
|
ata_tf_init(qc->dev, &qc->tf);
|
|
|
|
/* init result_tf such that it indicates normal completion */
|
|
qc->result_tf.command = ATA_DRDY;
|
|
qc->result_tf.feature = 0;
|
|
}
|
|
|
|
static inline int ata_try_flush_cache(const struct ata_device *dev)
|
|
{
|
|
return ata_id_wcache_enabled(dev->id) ||
|
|
ata_id_has_flush(dev->id) ||
|
|
ata_id_has_flush_ext(dev->id);
|
|
}
|
|
|
|
static inline unsigned int ac_err_mask(u8 status)
|
|
{
|
|
if (status & (ATA_BUSY | ATA_DRQ))
|
|
return AC_ERR_HSM;
|
|
if (status & (ATA_ERR | ATA_DF))
|
|
return AC_ERR_DEV;
|
|
return 0;
|
|
}
|
|
|
|
static inline unsigned int __ac_err_mask(u8 status)
|
|
{
|
|
unsigned int mask = ac_err_mask(status);
|
|
if (mask == 0)
|
|
return AC_ERR_OTHER;
|
|
return mask;
|
|
}
|
|
|
|
static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
|
|
{
|
|
return *(struct ata_port **)&host->hostdata[0];
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
* PMP - drivers/ata/libata-pmp.c
|
|
*/
|
|
#ifdef CONFIG_SATA_PMP
|
|
|
|
extern const struct ata_port_operations sata_pmp_port_ops;
|
|
|
|
extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
|
|
extern void sata_pmp_error_handler(struct ata_port *ap);
|
|
|
|
#else /* CONFIG_SATA_PMP */
|
|
|
|
#define sata_pmp_port_ops sata_port_ops
|
|
#define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
|
|
#define sata_pmp_error_handler ata_std_error_handler
|
|
|
|
#endif /* CONFIG_SATA_PMP */
|
|
|
|
|
|
/**************************************************************************
|
|
* SFF - drivers/ata/libata-sff.c
|
|
*/
|
|
#ifdef CONFIG_ATA_SFF
|
|
|
|
extern const struct ata_port_operations ata_sff_port_ops;
|
|
extern const struct ata_port_operations ata_bmdma_port_ops;
|
|
|
|
/* PIO only, sg_tablesize and dma_boundary limits can be removed */
|
|
#define ATA_PIO_SHT(drv_name) \
|
|
ATA_BASE_SHT(drv_name), \
|
|
.sg_tablesize = LIBATA_MAX_PRD, \
|
|
.dma_boundary = ATA_DMA_BOUNDARY
|
|
|
|
#define ATA_BMDMA_SHT(drv_name) \
|
|
ATA_BASE_SHT(drv_name), \
|
|
.sg_tablesize = LIBATA_MAX_PRD, \
|
|
.dma_boundary = ATA_DMA_BOUNDARY
|
|
|
|
extern void ata_sff_qc_prep(struct ata_queued_cmd *qc);
|
|
extern void ata_sff_dumb_qc_prep(struct ata_queued_cmd *qc);
|
|
extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
|
|
extern u8 ata_sff_check_status(struct ata_port *ap);
|
|
extern u8 ata_sff_altstatus(struct ata_port *ap);
|
|
extern int ata_sff_busy_sleep(struct ata_port *ap,
|
|
unsigned long timeout_pat, unsigned long timeout);
|
|
extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline);
|
|
extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
|
|
extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
|
|
extern void ata_sff_exec_command(struct ata_port *ap,
|
|
const struct ata_taskfile *tf);
|
|
extern unsigned int ata_sff_data_xfer(struct ata_device *dev,
|
|
unsigned char *buf, unsigned int buflen, int rw);
|
|
extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev,
|
|
unsigned char *buf, unsigned int buflen, int rw);
|
|
extern u8 ata_sff_irq_on(struct ata_port *ap);
|
|
extern void ata_sff_irq_clear(struct ata_port *ap);
|
|
extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
|
|
u8 status, int in_wq);
|
|
extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
|
|
extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
|
|
extern unsigned int ata_sff_host_intr(struct ata_port *ap,
|
|
struct ata_queued_cmd *qc);
|
|
extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
|
|
extern void ata_sff_freeze(struct ata_port *ap);
|
|
extern void ata_sff_thaw(struct ata_port *ap);
|
|
extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
|
|
extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
|
|
u8 *r_err);
|
|
extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
|
|
unsigned long deadline);
|
|
extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
|
|
unsigned long deadline);
|
|
extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
|
|
unsigned long deadline);
|
|
extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
|
|
extern void ata_sff_error_handler(struct ata_port *ap);
|
|
extern void ata_sff_post_internal_cmd(struct ata_queued_cmd *qc);
|
|
extern int ata_sff_port_start(struct ata_port *ap);
|
|
extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
|
|
extern unsigned long ata_bmdma_mode_filter(struct ata_device *dev,
|
|
unsigned long xfer_mask);
|
|
extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
|
|
extern void ata_bmdma_start(struct ata_queued_cmd *qc);
|
|
extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
|
|
extern u8 ata_bmdma_status(struct ata_port *ap);
|
|
extern void ata_bus_reset(struct ata_port *ap);
|
|
|
|
#ifdef CONFIG_PCI
|
|
extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
|
|
extern int ata_pci_bmdma_init(struct ata_host *host);
|
|
extern int ata_pci_sff_init_host(struct ata_host *host);
|
|
extern int ata_pci_sff_prepare_host(struct pci_dev *pdev,
|
|
const struct ata_port_info * const * ppi,
|
|
struct ata_host **r_host);
|
|
extern int ata_pci_sff_activate_host(struct ata_host *host,
|
|
irq_handler_t irq_handler,
|
|
struct scsi_host_template *sht);
|
|
extern int ata_pci_sff_init_one(struct pci_dev *pdev,
|
|
const struct ata_port_info * const * ppi,
|
|
struct scsi_host_template *sht, void *host_priv);
|
|
#endif /* CONFIG_PCI */
|
|
|
|
/**
|
|
* ata_sff_pause - Flush writes and pause 400 nanoseconds.
|
|
* @ap: Port to wait for.
|
|
*
|
|
* LOCKING:
|
|
* Inherited from caller.
|
|
*/
|
|
static inline void ata_sff_pause(struct ata_port *ap)
|
|
{
|
|
ata_sff_altstatus(ap);
|
|
ndelay(400);
|
|
}
|
|
|
|
/**
|
|
* ata_sff_busy_wait - Wait for a port status register
|
|
* @ap: Port to wait for.
|
|
* @bits: bits that must be clear
|
|
* @max: number of 10uS waits to perform
|
|
*
|
|
* Waits up to max*10 microseconds for the selected bits in the port's
|
|
* status register to be cleared.
|
|
* Returns final value of status register.
|
|
*
|
|
* LOCKING:
|
|
* Inherited from caller.
|
|
*/
|
|
static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits,
|
|
unsigned int max)
|
|
{
|
|
u8 status;
|
|
|
|
do {
|
|
udelay(10);
|
|
status = ap->ops->sff_check_status(ap);
|
|
max--;
|
|
} while (status != 0xff && (status & bits) && (max > 0));
|
|
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* ata_wait_idle - Wait for a port to be idle.
|
|
* @ap: Port to wait for.
|
|
*
|
|
* Waits up to 10ms for port's BUSY and DRQ signals to clear.
|
|
* Returns final value of status register.
|
|
*
|
|
* LOCKING:
|
|
* Inherited from caller.
|
|
*/
|
|
static inline u8 ata_wait_idle(struct ata_port *ap)
|
|
{
|
|
u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
|
|
|
|
#ifdef ATA_DEBUG
|
|
if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
|
|
ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n",
|
|
status);
|
|
#endif
|
|
|
|
return status;
|
|
}
|
|
#endif /* CONFIG_ATA_SFF */
|
|
|
|
#endif /* __LINUX_LIBATA_H__ */
|