mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
2053 lines
67 KiB
2053 lines
67 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
|
/* |
|
* Copyright 2003-2005 Red Hat, Inc. All rights reserved. |
|
* Copyright 2003-2005 Jeff Garzik |
|
* |
|
* libata documentation is available via 'make {ps|pdf}docs', |
|
* as Documentation/driver-api/libata.rst |
|
*/ |
|
|
|
#ifndef __LINUX_LIBATA_H__ |
|
#define __LINUX_LIBATA_H__ |
|
|
|
#include <linux/delay.h> |
|
#include <linux/jiffies.h> |
|
#include <linux/interrupt.h> |
|
#include <linux/dma-mapping.h> |
|
#include <linux/scatterlist.h> |
|
#include <linux/io.h> |
|
#include <linux/ata.h> |
|
#include <linux/workqueue.h> |
|
#include <scsi/scsi_host.h> |
|
#include <linux/acpi.h> |
|
#include <linux/cdrom.h> |
|
#include <linux/sched.h> |
|
#include <linux/async.h> |
|
|
|
/* |
|
* Define if arch has non-standard setup. This is a _PCI_ standard |
|
* not a legacy or ISA standard. |
|
*/ |
|
#ifdef CONFIG_ATA_NONSTANDARD |
|
#include <asm/libata-portmap.h> |
|
#else |
|
#define ATA_PRIMARY_IRQ(dev) 14 |
|
#define ATA_SECONDARY_IRQ(dev) 15 |
|
#endif |
|
|
|
/* |
|
* compile-time options: to be removed as soon as all the drivers are |
|
* converted to the new debugging mechanism |
|
*/ |
|
#undef ATA_DEBUG /* debugging output */ |
|
#undef ATA_VERBOSE_DEBUG /* yet more debugging output */ |
|
#undef ATA_IRQ_TRAP /* define to ack screaming irqs */ |
|
#undef ATA_NDEBUG /* define to disable quick runtime checks */ |
|
|
|
|
|
/* note: prints function name for you */ |
|
#ifdef ATA_DEBUG |
|
#define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) |
|
#ifdef ATA_VERBOSE_DEBUG |
|
#define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) |
|
#else |
|
#define VPRINTK(fmt, args...) |
|
#endif /* ATA_VERBOSE_DEBUG */ |
|
#else |
|
#define DPRINTK(fmt, args...) |
|
#define VPRINTK(fmt, args...) |
|
#endif /* ATA_DEBUG */ |
|
|
|
#define ata_print_version_once(dev, version) \ |
|
({ \ |
|
static bool __print_once; \ |
|
\ |
|
if (!__print_once) { \ |
|
__print_once = true; \ |
|
ata_print_version(dev, version); \ |
|
} \ |
|
}) |
|
|
|
/* NEW: debug levels */ |
|
#define HAVE_LIBATA_MSG 1 |
|
|
|
enum { |
|
ATA_MSG_DRV = 0x0001, |
|
ATA_MSG_INFO = 0x0002, |
|
ATA_MSG_PROBE = 0x0004, |
|
ATA_MSG_WARN = 0x0008, |
|
ATA_MSG_MALLOC = 0x0010, |
|
ATA_MSG_CTL = 0x0020, |
|
ATA_MSG_INTR = 0x0040, |
|
ATA_MSG_ERR = 0x0080, |
|
}; |
|
|
|
#define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV) |
|
#define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO) |
|
#define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE) |
|
#define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN) |
|
#define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC) |
|
#define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL) |
|
#define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR) |
|
#define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR) |
|
|
|
static inline u32 ata_msg_init(int dval, int default_msg_enable_bits) |
|
{ |
|
if (dval < 0 || dval >= (sizeof(u32) * 8)) |
|
return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */ |
|
if (!dval) |
|
return 0; |
|
return (1 << dval) - 1; |
|
} |
|
|
|
/* defines only for the constants which don't work well as enums */ |
|
#define ATA_TAG_POISON 0xfafbfcfdU |
|
|
|
enum { |
|
/* various global constants */ |
|
LIBATA_MAX_PRD = ATA_MAX_PRD / 2, |
|
LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */ |
|
ATA_DEF_QUEUE = 1, |
|
ATA_MAX_QUEUE = 32, |
|
ATA_TAG_INTERNAL = ATA_MAX_QUEUE, |
|
ATA_SHORT_PAUSE = 16, |
|
|
|
ATAPI_MAX_DRAIN = 16 << 10, |
|
|
|
ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1, |
|
|
|
ATA_SHT_EMULATED = 1, |
|
ATA_SHT_THIS_ID = -1, |
|
|
|
/* struct ata_taskfile flags */ |
|
ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */ |
|
ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */ |
|
ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */ |
|
ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */ |
|
ATA_TFLAG_LBA = (1 << 4), /* enable LBA */ |
|
ATA_TFLAG_FUA = (1 << 5), /* enable FUA */ |
|
ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */ |
|
|
|
/* struct ata_device stuff */ |
|
ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */ |
|
ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */ |
|
ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */ |
|
ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */ |
|
ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */ |
|
ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ |
|
ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ |
|
ATA_DFLAG_AN = (1 << 7), /* AN configured */ |
|
ATA_DFLAG_TRUSTED = (1 << 8), /* device supports trusted send/recv */ |
|
ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */ |
|
ATA_DFLAG_CFG_MASK = (1 << 12) - 1, |
|
|
|
ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */ |
|
ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */ |
|
ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */ |
|
ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */ |
|
ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */ |
|
ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */ |
|
ATA_DFLAG_NCQ_SEND_RECV = (1 << 19), /* device supports NCQ SEND and RECV */ |
|
ATA_DFLAG_NCQ_PRIO = (1 << 20), /* device supports NCQ priority */ |
|
ATA_DFLAG_NCQ_PRIO_ENABLE = (1 << 21), /* Priority cmds sent to dev */ |
|
ATA_DFLAG_INIT_MASK = (1 << 24) - 1, |
|
|
|
ATA_DFLAG_DETACH = (1 << 24), |
|
ATA_DFLAG_DETACHED = (1 << 25), |
|
|
|
ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */ |
|
ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */ |
|
ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */ |
|
ATA_DFLAG_D_SENSE = (1 << 29), /* Descriptor sense requested */ |
|
ATA_DFLAG_ZAC = (1 << 30), /* ZAC device */ |
|
|
|
ATA_DEV_UNKNOWN = 0, /* unknown device */ |
|
ATA_DEV_ATA = 1, /* ATA device */ |
|
ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ |
|
ATA_DEV_ATAPI = 3, /* ATAPI device */ |
|
ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ |
|
ATA_DEV_PMP = 5, /* SATA port multiplier */ |
|
ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ |
|
ATA_DEV_SEMB = 7, /* SEMB */ |
|
ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ |
|
ATA_DEV_ZAC = 9, /* ZAC device */ |
|
ATA_DEV_ZAC_UNSUP = 10, /* ZAC device (unsupported) */ |
|
ATA_DEV_NONE = 11, /* no device */ |
|
|
|
/* struct ata_link flags */ |
|
/* NOTE: struct ata_force_param currently stores lflags in u16 */ |
|
ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */ |
|
ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ |
|
ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ |
|
ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ |
|
ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, |
|
ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ |
|
ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ |
|
ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */ |
|
ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */ |
|
ATA_LFLAG_RST_ONCE = (1 << 9), /* limit recovery to one reset */ |
|
ATA_LFLAG_CHANGED = (1 << 10), /* LPM state changed on this link */ |
|
ATA_LFLAG_NO_DB_DELAY = (1 << 11), /* no debounce delay on link resume */ |
|
|
|
/* struct ata_port flags */ |
|
ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ |
|
/* (doesn't imply presence) */ |
|
ATA_FLAG_SATA = (1 << 1), |
|
ATA_FLAG_NO_LPM = (1 << 2), /* host not happy with LPM */ |
|
ATA_FLAG_NO_LOG_PAGE = (1 << 5), /* do not issue log page read */ |
|
ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ |
|
ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ |
|
ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ |
|
ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD |
|
* doesn't handle PIO interrupts */ |
|
ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ |
|
ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */ |
|
ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */ |
|
ATA_FLAG_DEBUGMSG = (1 << 13), |
|
ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */ |
|
ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ |
|
ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ |
|
ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ |
|
ATA_FLAG_AN = (1 << 18), /* controller supports AN */ |
|
ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ |
|
ATA_FLAG_FPDMA_AUX = (1 << 20), /* controller supports H2DFIS aux field */ |
|
ATA_FLAG_EM = (1 << 21), /* driver supports enclosure |
|
* management */ |
|
ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity |
|
* led */ |
|
ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */ |
|
ATA_FLAG_SAS_HOST = (1 << 24), /* SAS host */ |
|
|
|
/* bits 24:31 of ap->flags are reserved for LLD specific flags */ |
|
|
|
|
|
/* struct ata_port pflags */ |
|
ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ |
|
ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ |
|
ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ |
|
ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ |
|
ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ |
|
ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ |
|
ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ |
|
ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ |
|
ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */ |
|
ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */ |
|
|
|
ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ |
|
ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ |
|
ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */ |
|
|
|
ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */ |
|
ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */ |
|
ATA_PFLAG_EXTERNAL = (1 << 22), /* eSATA/external port */ |
|
|
|
/* struct ata_queued_cmd flags */ |
|
ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ |
|
ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */ |
|
ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ |
|
ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ |
|
ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ |
|
ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */ |
|
ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */ |
|
|
|
ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */ |
|
ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ |
|
ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ |
|
|
|
/* host set flags */ |
|
ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ |
|
ATA_HOST_STARTED = (1 << 1), /* Host started */ |
|
ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */ |
|
ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */ |
|
|
|
/* bits 24:31 of host->flags are reserved for LLD specific flags */ |
|
|
|
/* various lengths of time */ |
|
ATA_TMOUT_BOOT = 30000, /* heuristic */ |
|
ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */ |
|
ATA_TMOUT_INTERNAL_QUICK = 5000, |
|
ATA_TMOUT_MAX_PARK = 30000, |
|
|
|
/* |
|
* GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s |
|
* is too much without parallel probing. Use 2s if parallel |
|
* probing is available, 800ms otherwise. |
|
*/ |
|
ATA_TMOUT_FF_WAIT_LONG = 2000, |
|
ATA_TMOUT_FF_WAIT = 800, |
|
|
|
/* Spec mandates to wait for ">= 2ms" before checking status |
|
* after reset. We wait 150ms, because that was the magic |
|
* delay used for ATAPI devices in Hale Landis's ATADRVR, for |
|
* the period of time between when the ATA command register is |
|
* written, and then status is checked. Because waiting for |
|
* "a while" before checking status is fine, post SRST, we |
|
* perform this magic delay here as well. |
|
* |
|
* Old drivers/ide uses the 2mS rule and then waits for ready. |
|
*/ |
|
ATA_WAIT_AFTER_RESET = 150, |
|
|
|
/* If PMP is supported, we have to do follow-up SRST. As some |
|
* PMPs don't send D2H Reg FIS after hardreset, LLDs are |
|
* advised to wait only for the following duration before |
|
* doing SRST. |
|
*/ |
|
ATA_TMOUT_PMP_SRST_WAIT = 5000, |
|
|
|
/* When the LPM policy is set to ATA_LPM_MAX_POWER, there might |
|
* be a spurious PHY event, so ignore the first PHY event that |
|
* occurs within 10s after the policy change. |
|
*/ |
|
ATA_TMOUT_SPURIOUS_PHY = 10000, |
|
|
|
/* ATA bus states */ |
|
BUS_UNKNOWN = 0, |
|
BUS_DMA = 1, |
|
BUS_IDLE = 2, |
|
BUS_NOINTR = 3, |
|
BUS_NODATA = 4, |
|
BUS_TIMER = 5, |
|
BUS_PIO = 6, |
|
BUS_EDD = 7, |
|
BUS_IDENTIFY = 8, |
|
BUS_PACKET = 9, |
|
|
|
/* SATA port states */ |
|
PORT_UNKNOWN = 0, |
|
PORT_ENABLED = 1, |
|
PORT_DISABLED = 2, |
|
|
|
/* encoding various smaller bitmaps into a single |
|
* unsigned long bitmap |
|
*/ |
|
ATA_NR_PIO_MODES = 7, |
|
ATA_NR_MWDMA_MODES = 5, |
|
ATA_NR_UDMA_MODES = 8, |
|
|
|
ATA_SHIFT_PIO = 0, |
|
ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES, |
|
ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES, |
|
ATA_SHIFT_PRIO = 6, |
|
|
|
ATA_PRIO_HIGH = 2, |
|
/* size of buffer to pad xfers ending on unaligned boundaries */ |
|
ATA_DMA_PAD_SZ = 4, |
|
|
|
/* ering size */ |
|
ATA_ERING_SIZE = 32, |
|
|
|
/* return values for ->qc_defer */ |
|
ATA_DEFER_LINK = 1, |
|
ATA_DEFER_PORT = 2, |
|
|
|
/* desc_len for ata_eh_info and context */ |
|
ATA_EH_DESC_LEN = 80, |
|
|
|
/* reset / recovery action types */ |
|
ATA_EH_REVALIDATE = (1 << 0), |
|
ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */ |
|
ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */ |
|
ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, |
|
ATA_EH_ENABLE_LINK = (1 << 3), |
|
ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */ |
|
|
|
ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK, |
|
ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET | |
|
ATA_EH_ENABLE_LINK, |
|
|
|
/* ata_eh_info->flags */ |
|
ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ |
|
ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ |
|
ATA_EHI_QUIET = (1 << 3), /* be quiet */ |
|
ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */ |
|
|
|
ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ |
|
ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ |
|
ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ |
|
ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ |
|
ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */ |
|
|
|
ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, |
|
|
|
/* mask of flags to transfer *to* the slave link */ |
|
ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, |
|
|
|
/* max tries if error condition is still set after ->error_handler */ |
|
ATA_EH_MAX_TRIES = 5, |
|
|
|
/* sometimes resuming a link requires several retries */ |
|
ATA_LINK_RESUME_TRIES = 5, |
|
|
|
/* how hard are we gonna try to probe/recover devices */ |
|
ATA_PROBE_MAX_TRIES = 3, |
|
ATA_EH_DEV_TRIES = 3, |
|
ATA_EH_PMP_TRIES = 5, |
|
ATA_EH_PMP_LINK_TRIES = 3, |
|
|
|
SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */ |
|
|
|
/* This should match the actual table size of |
|
* ata_eh_cmd_timeout_table in libata-eh.c. |
|
*/ |
|
ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6, |
|
|
|
/* Horkage types. May be set by libata or controller on drives |
|
(some horkage may be drive/controller pair dependent */ |
|
|
|
ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ |
|
ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ |
|
ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ |
|
ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ |
|
ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ |
|
ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */ |
|
ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ |
|
ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */ |
|
ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */ |
|
ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */ |
|
ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands |
|
not multiple of 16 bytes */ |
|
ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */ |
|
ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */ |
|
ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */ |
|
ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */ |
|
ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */ |
|
ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17), /* Set max sects to 65535 */ |
|
ATA_HORKAGE_ATAPI_DMADIR = (1 << 18), /* device requires dmadir */ |
|
ATA_HORKAGE_NO_NCQ_TRIM = (1 << 19), /* don't use queued TRIM */ |
|
ATA_HORKAGE_NOLPM = (1 << 20), /* don't use LPM */ |
|
ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21), /* some WDs have broken LPM */ |
|
ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),/* guarantees zero after trim */ |
|
ATA_HORKAGE_NO_DMA_LOG = (1 << 23), /* don't use DMA for log read */ |
|
ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */ |
|
ATA_HORKAGE_MAX_SEC_1024 = (1 << 25), /* Limit max sects to 1024 */ |
|
ATA_HORKAGE_MAX_TRIM_128M = (1 << 26), /* Limit max trim size to 128M */ |
|
|
|
/* DMA mask for user DMA control: User visible values; DO NOT |
|
renumber */ |
|
ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ |
|
ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ |
|
ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ |
|
|
|
/* ATAPI command types */ |
|
ATAPI_READ = 0, /* READs */ |
|
ATAPI_WRITE = 1, /* WRITEs */ |
|
ATAPI_READ_CD = 2, /* READ CD [MSF] */ |
|
ATAPI_PASS_THRU = 3, /* SAT pass-thru */ |
|
ATAPI_MISC = 4, /* the rest */ |
|
|
|
/* Timing constants */ |
|
ATA_TIMING_SETUP = (1 << 0), |
|
ATA_TIMING_ACT8B = (1 << 1), |
|
ATA_TIMING_REC8B = (1 << 2), |
|
ATA_TIMING_CYC8B = (1 << 3), |
|
ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | |
|
ATA_TIMING_CYC8B, |
|
ATA_TIMING_ACTIVE = (1 << 4), |
|
ATA_TIMING_RECOVER = (1 << 5), |
|
ATA_TIMING_DMACK_HOLD = (1 << 6), |
|
ATA_TIMING_CYCLE = (1 << 7), |
|
ATA_TIMING_UDMA = (1 << 8), |
|
ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | |
|
ATA_TIMING_REC8B | ATA_TIMING_CYC8B | |
|
ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | |
|
ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE | |
|
ATA_TIMING_UDMA, |
|
|
|
/* ACPI constants */ |
|
ATA_ACPI_FILTER_SETXFER = 1 << 0, |
|
ATA_ACPI_FILTER_LOCK = 1 << 1, |
|
ATA_ACPI_FILTER_DIPM = 1 << 2, |
|
ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */ |
|
ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */ |
|
|
|
ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER | |
|
ATA_ACPI_FILTER_LOCK | |
|
ATA_ACPI_FILTER_DIPM, |
|
}; |
|
|
|
enum ata_xfer_mask { |
|
ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1) |
|
<< ATA_SHIFT_PIO, |
|
ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1) |
|
<< ATA_SHIFT_MWDMA, |
|
ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1) |
|
<< ATA_SHIFT_UDMA, |
|
}; |
|
|
|
enum hsm_task_states { |
|
HSM_ST_IDLE, /* no command on going */ |
|
HSM_ST_FIRST, /* (waiting the device to) |
|
write CDB or first data block */ |
|
HSM_ST, /* (waiting the device to) transfer data */ |
|
HSM_ST_LAST, /* (waiting the device to) complete command */ |
|
HSM_ST_ERR, /* error */ |
|
}; |
|
|
|
enum ata_completion_errors { |
|
AC_ERR_OK = 0, /* no error */ |
|
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 */ |
|
}; |
|
|
|
/* |
|
* Link power management policy: If you alter this, you also need to |
|
* alter libata-scsi.c (for the ascii descriptions) |
|
*/ |
|
enum ata_lpm_policy { |
|
ATA_LPM_UNKNOWN, |
|
ATA_LPM_MAX_POWER, |
|
ATA_LPM_MED_POWER, |
|
ATA_LPM_MED_POWER_WITH_DIPM, /* Med power + DIPM as win IRST does */ |
|
ATA_LPM_MIN_POWER_WITH_PARTIAL, /* Min Power + partial and slumber */ |
|
ATA_LPM_MIN_POWER, /* Min power + no partial (slumber only) */ |
|
}; |
|
|
|
enum ata_lpm_hints { |
|
ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */ |
|
ATA_LPM_HIPM = (1 << 1), /* may use HIPM */ |
|
ATA_LPM_WAKE_ONLY = (1 << 2), /* only wake up link */ |
|
}; |
|
|
|
/* 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); |
|
|
|
extern struct device_attribute dev_attr_unload_heads; |
|
#ifdef CONFIG_SATA_HOST |
|
extern struct device_attribute dev_attr_link_power_management_policy; |
|
extern struct device_attribute dev_attr_ncq_prio_enable; |
|
extern struct device_attribute dev_attr_em_message_type; |
|
extern struct device_attribute dev_attr_em_message; |
|
extern struct device_attribute dev_attr_sw_activity; |
|
#endif |
|
|
|
enum sw_activity { |
|
OFF, |
|
BLINK_ON, |
|
BLINK_OFF, |
|
}; |
|
|
|
struct ata_taskfile { |
|
unsigned long flags; /* ATA_TFLAG_xxx */ |
|
u8 protocol; /* ATA_PROT_xxx */ |
|
|
|
u8 ctl; /* control reg */ |
|
|
|
u8 hob_feature; /* additional data */ |
|
u8 hob_nsect; /* to support LBA48 */ |
|
u8 hob_lbal; |
|
u8 hob_lbam; |
|
u8 hob_lbah; |
|
|
|
u8 feature; |
|
u8 nsect; |
|
u8 lbal; |
|
u8 lbam; |
|
u8 lbah; |
|
|
|
u8 device; |
|
|
|
u8 command; /* IO operation */ |
|
|
|
u32 auxiliary; /* auxiliary field */ |
|
/* from SATA 3.1 and */ |
|
/* ATA-8 ACS-3 */ |
|
}; |
|
|
|
#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; |
|
#ifdef CONFIG_ATA_BMDMA |
|
void __iomem *bmdma_addr; |
|
#endif /* CONFIG_ATA_BMDMA */ |
|
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; |
|
unsigned int n_tags; /* nr of NCQ tags */ |
|
void *private_data; |
|
struct ata_port_operations *ops; |
|
unsigned long flags; |
|
struct kref kref; |
|
|
|
struct mutex eh_mutex; |
|
struct task_struct *eh_owner; |
|
|
|
struct ata_port *simplex_claimed; /* channel owning the DMA */ |
|
struct ata_port *ports[]; |
|
}; |
|
|
|
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; /* libata core tag */ |
|
unsigned int hw_tag; /* driver tag */ |
|
unsigned int n_elem; |
|
unsigned int orig_n_elem; |
|
|
|
int dma_dir; |
|
|
|
unsigned int sect_size; |
|
|
|
unsigned int nbytes; |
|
unsigned int extrabytes; |
|
unsigned int curbytes; |
|
|
|
struct scatterlist sgent; |
|
|
|
struct scatterlist *sg; |
|
|
|
struct scatterlist *cursg; |
|
unsigned int cursg_ofs; |
|
|
|
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 int horkage; /* List of broken features */ |
|
unsigned long flags; /* ATA_DFLAG_xxx */ |
|
struct scsi_device *sdev; /* attached SCSI device */ |
|
void *private_data; |
|
#ifdef CONFIG_ATA_ACPI |
|
union acpi_object *gtf_cache; |
|
unsigned int gtf_filter; |
|
#endif |
|
#ifdef CONFIG_SATA_ZPODD |
|
void *zpodd; |
|
#endif |
|
struct device tdev; |
|
/* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */ |
|
u64 n_sectors; /* size of device, if ATA */ |
|
u64 n_native_sectors; /* native size, if ATA */ |
|
unsigned int class; /* ATA_DEV_xxx */ |
|
unsigned long unpark_deadline; |
|
|
|
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 */ |
|
|
|
union { |
|
u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ |
|
u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ |
|
} ____cacheline_aligned; |
|
|
|
/* DEVSLP Timing Variables from Identify Device Data Log */ |
|
u8 devslp_timing[ATA_LOG_DEVSLP_SIZE]; |
|
|
|
/* NCQ send and receive log subcommand support */ |
|
u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE]; |
|
u8 ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_SIZE]; |
|
|
|
/* ZAC zone configuration */ |
|
u32 zac_zoned_cap; |
|
u32 zac_zones_optimal_open; |
|
u32 zac_zones_optimal_nonseq; |
|
u32 zac_zones_max_open; |
|
|
|
/* error history */ |
|
int spdn_cnt; |
|
/* ering is CLEAR_END, read comment above CLEAR_END */ |
|
struct ata_ering ering; |
|
}; |
|
|
|
/* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are |
|
* cleared to zero on ata_dev_init(). |
|
*/ |
|
#define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors) |
|
#define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering) |
|
|
|
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]; |
|
int cmd_timeout_idx[ATA_MAX_DEVICES] |
|
[ATA_EH_CMD_TIMEOUT_TABLE_SIZE]; |
|
unsigned int classes[ATA_MAX_DEVICES]; |
|
unsigned int did_probe_mask; |
|
unsigned int unloaded_mask; |
|
unsigned int saved_ncq_enabled; |
|
u8 saved_xfer_mode[ATA_MAX_DEVICES]; |
|
/* timestamp for the last reset attempt or success */ |
|
unsigned long last_reset; |
|
}; |
|
|
|
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 # */ |
|
|
|
struct device tdev; |
|
unsigned int active_tag; /* active tag on this link */ |
|
u32 sactive; /* active NCQ commands */ |
|
|
|
unsigned int flags; /* ATA_LFLAG_xxx */ |
|
|
|
u32 saved_scontrol; /* SControl on probe */ |
|
unsigned int hw_sata_spd_limit; |
|
unsigned int sata_spd_limit; |
|
unsigned int sata_spd; /* current SATA PHY speed */ |
|
enum ata_lpm_policy lpm_policy; |
|
|
|
/* 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]; |
|
|
|
unsigned long last_lpm_change; /* when last LPM change happened */ |
|
}; |
|
#define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag) |
|
#define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0]) |
|
|
|
struct ata_port { |
|
struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ |
|
struct ata_port_operations *ops; |
|
spinlock_t *lock; |
|
/* Flags owned by the EH context. Only EH should touch these once the |
|
port is active */ |
|
unsigned long flags; /* ATA_FLAG_xxx */ |
|
/* Flags that change dynamically, protected by ap->lock */ |
|
unsigned int pflags; /* ATA_PFLAG_xxx */ |
|
unsigned int print_id; /* user visible unique port ID */ |
|
unsigned int local_port_no; /* host local port num */ |
|
unsigned int port_no; /* 0 based port no. inside the host */ |
|
|
|
#ifdef CONFIG_ATA_SFF |
|
struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ |
|
u8 ctl; /* cache of ATA control register */ |
|
u8 last_ctl; /* Cache last written value */ |
|
struct ata_link* sff_pio_task_link; /* link currently used */ |
|
struct delayed_work sff_pio_task; |
|
#ifdef CONFIG_ATA_BMDMA |
|
struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */ |
|
dma_addr_t bmdma_prd_dma; /* and its DMA mapping */ |
|
#endif /* CONFIG_ATA_BMDMA */ |
|
#endif /* CONFIG_ATA_SFF */ |
|
|
|
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 + 1]; |
|
unsigned long sas_tag_allocated; /* for sas tag allocation only */ |
|
u64 qc_active; |
|
int nr_active_links; /* #links with active qcs */ |
|
unsigned int sas_last_tag; /* track next tag hw expects */ |
|
|
|
struct ata_link link; /* host default link */ |
|
struct ata_link *slave_link; /* see ata_slave_link_init() */ |
|
|
|
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; |
|
struct device tdev; |
|
|
|
struct mutex scsi_scan_mutex; |
|
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; |
|
struct completion park_req_pending; |
|
|
|
pm_message_t pm_mesg; |
|
enum ata_lpm_policy target_lpm_policy; |
|
|
|
struct timer_list fastdrain_timer; |
|
unsigned long fastdrain_cnt; |
|
|
|
async_cookie_t cookie; |
|
|
|
int em_message_type; |
|
void *private_data; |
|
|
|
#ifdef CONFIG_ATA_ACPI |
|
struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */ |
|
#endif |
|
/* owned by EH */ |
|
u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned; |
|
}; |
|
|
|
/* 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); |
|
enum ata_completion_errors (*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); |
|
unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id); |
|
|
|
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 (*lost_interrupt)(struct ata_port *ap); |
|
void (*post_internal_cmd)(struct ata_queued_cmd *qc); |
|
void (*sched_eh)(struct ata_port *ap); |
|
void (*end_eh)(struct ata_port *ap); |
|
|
|
/* |
|
* Optional features |
|
*/ |
|
int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val); |
|
int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val); |
|
void (*pmp_attach)(struct ata_port *ap); |
|
void (*pmp_detach)(struct ata_port *ap); |
|
int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy, |
|
unsigned hints); |
|
|
|
/* |
|
* 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); |
|
void (*sff_set_devctl)(struct ata_port *ap, u8 ctl); |
|
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_queued_cmd *qc, |
|
unsigned char *buf, unsigned int buflen, int rw); |
|
void (*sff_irq_on)(struct ata_port *); |
|
bool (*sff_irq_check)(struct ata_port *); |
|
void (*sff_irq_clear)(struct ata_port *); |
|
void (*sff_drain_fifo)(struct ata_queued_cmd *qc); |
|
|
|
#ifdef CONFIG_ATA_BMDMA |
|
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_BMDMA */ |
|
#endif /* CONFIG_ATA_SFF */ |
|
|
|
ssize_t (*em_show)(struct ata_port *ap, char *buf); |
|
ssize_t (*em_store)(struct ata_port *ap, const char *message, |
|
size_t size); |
|
ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf); |
|
ssize_t (*sw_activity_store)(struct ata_device *dev, |
|
enum sw_activity val); |
|
ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state, |
|
ssize_t size); |
|
|
|
/* |
|
* 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 dmack_hold; /* tj */ |
|
unsigned short cycle; /* t0 */ |
|
unsigned short udma; /* t2CYCTYP/2 */ |
|
}; |
|
|
|
/* |
|
* Core layer - drivers/ata/libata-core.c |
|
*/ |
|
extern struct ata_port_operations ata_dummy_port_ops; |
|
extern const struct ata_port_info ata_dummy_port_info; |
|
|
|
static inline bool ata_is_atapi(u8 prot) |
|
{ |
|
return prot & ATA_PROT_FLAG_ATAPI; |
|
} |
|
|
|
static inline bool ata_is_pio(u8 prot) |
|
{ |
|
return prot & ATA_PROT_FLAG_PIO; |
|
} |
|
|
|
static inline bool ata_is_dma(u8 prot) |
|
{ |
|
return prot & ATA_PROT_FLAG_DMA; |
|
} |
|
|
|
static inline bool ata_is_ncq(u8 prot) |
|
{ |
|
return prot & ATA_PROT_FLAG_NCQ; |
|
} |
|
|
|
static inline bool ata_is_data(u8 prot) |
|
{ |
|
return prot & (ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA); |
|
} |
|
|
|
static inline int is_multi_taskfile(struct ata_taskfile *tf) |
|
{ |
|
return (tf->command == ATA_CMD_READ_MULTI) || |
|
(tf->command == ATA_CMD_WRITE_MULTI) || |
|
(tf->command == ATA_CMD_READ_MULTI_EXT) || |
|
(tf->command == ATA_CMD_WRITE_MULTI_EXT) || |
|
(tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); |
|
} |
|
|
|
static inline int ata_port_is_dummy(struct ata_port *ap) |
|
{ |
|
return ap->ops == &ata_dummy_port_ops; |
|
} |
|
|
|
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_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 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 void ata_host_get(struct ata_host *host); |
|
extern void ata_host_put(struct ata_host *host); |
|
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 *, struct ata_port_operations *); |
|
extern int ata_scsi_detect(struct scsi_host_template *sht); |
|
extern int ata_scsi_ioctl(struct scsi_device *dev, unsigned int cmd, |
|
void __user *arg); |
|
#ifdef CONFIG_COMPAT |
|
#define ATA_SCSI_COMPAT_IOCTL .compat_ioctl = ata_scsi_ioctl, |
|
#else |
|
#define ATA_SCSI_COMPAT_IOCTL /* empty */ |
|
#endif |
|
extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd); |
|
#if IS_REACHABLE(CONFIG_ATA) |
|
bool ata_scsi_dma_need_drain(struct request *rq); |
|
#else |
|
#define ata_scsi_dma_need_drain NULL |
|
#endif |
|
extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev, |
|
unsigned int cmd, void __user *arg); |
|
extern bool ata_link_online(struct ata_link *link); |
|
extern bool 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); |
|
extern void ata_sas_port_suspend(struct ata_port *ap); |
|
extern void ata_sas_port_resume(struct ata_port *ap); |
|
#else |
|
static inline void ata_sas_port_suspend(struct ata_port *ap) |
|
{ |
|
} |
|
static inline void ata_sas_port_resume(struct ata_port *ap) |
|
{ |
|
} |
|
#endif |
|
extern int ata_ratelimit(void); |
|
extern void ata_msleep(struct ata_port *ap, unsigned int msecs); |
|
extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask, |
|
u32 val, unsigned long interval, unsigned long timeout); |
|
extern int atapi_cmd_type(u8 opcode); |
|
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_std_qc_defer(struct ata_queued_cmd *qc); |
|
extern enum ata_completion_errors 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 unsigned int ata_do_dev_read_id(struct ata_device *dev, |
|
struct ata_taskfile *tf, u16 *id); |
|
extern void ata_qc_complete(struct ata_queued_cmd *qc); |
|
extern u64 ata_qc_get_active(struct ata_port *ap); |
|
extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd); |
|
extern int ata_std_bios_param(struct scsi_device *sdev, |
|
struct block_device *bdev, |
|
sector_t capacity, int geom[]); |
|
extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev); |
|
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 int __ata_change_queue_depth(struct ata_port *ap, 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 void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap); |
|
extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q); |
|
|
|
/* |
|
* SATA specific code - drivers/ata/libata-sata.c |
|
*/ |
|
#ifdef CONFIG_SATA_HOST |
|
extern const unsigned long sata_deb_timing_normal[]; |
|
extern const unsigned long sata_deb_timing_hotplug[]; |
|
extern const unsigned long sata_deb_timing_long[]; |
|
|
|
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; |
|
} |
|
|
|
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 sata_set_spd(struct ata_link *link); |
|
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_link_resume(struct ata_link *link, const unsigned long *params, |
|
unsigned long deadline); |
|
extern void ata_eh_analyze_ncq_error(struct ata_link *link); |
|
#else |
|
static inline const unsigned long * |
|
sata_ehc_deb_timing(struct ata_eh_context *ehc) |
|
{ |
|
return NULL; |
|
} |
|
static inline int sata_scr_valid(struct ata_link *link) { return 0; } |
|
static inline int sata_scr_read(struct ata_link *link, int reg, u32 *val) |
|
{ |
|
return -EOPNOTSUPP; |
|
} |
|
static inline int sata_scr_write(struct ata_link *link, int reg, u32 val) |
|
{ |
|
return -EOPNOTSUPP; |
|
} |
|
static inline int sata_scr_write_flush(struct ata_link *link, int reg, u32 val) |
|
{ |
|
return -EOPNOTSUPP; |
|
} |
|
static inline int sata_set_spd(struct ata_link *link) { return -EOPNOTSUPP; } |
|
static inline int sata_link_hardreset(struct ata_link *link, |
|
const unsigned long *timing, |
|
unsigned long deadline, |
|
bool *online, |
|
int (*check_ready)(struct ata_link *)) |
|
{ |
|
if (online) |
|
*online = false; |
|
return -EOPNOTSUPP; |
|
} |
|
static inline int sata_link_resume(struct ata_link *link, |
|
const unsigned long *params, |
|
unsigned long deadline) |
|
{ |
|
return -EOPNOTSUPP; |
|
} |
|
static inline void ata_eh_analyze_ncq_error(struct ata_link *link) { } |
|
#endif |
|
extern int sata_link_debounce(struct ata_link *link, |
|
const unsigned long *params, unsigned long deadline); |
|
extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy, |
|
bool spm_wakeup); |
|
extern int ata_slave_link_init(struct ata_port *ap); |
|
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 void ata_sas_async_probe(struct ata_port *ap); |
|
extern int ata_sas_sync_probe(struct ata_port *ap); |
|
extern int ata_sas_port_init(struct ata_port *); |
|
extern int ata_sas_port_start(struct ata_port *ap); |
|
extern int ata_sas_tport_add(struct device *parent, struct ata_port *ap); |
|
extern void ata_sas_tport_delete(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, struct ata_port *ap); |
|
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 int ata_qc_complete_multiple(struct ata_port *ap, u64 qc_active); |
|
extern bool sata_lpm_ignore_phy_events(struct ata_link *link); |
|
extern int sata_async_notification(struct ata_port *ap); |
|
|
|
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 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_shutdown_one(struct pci_dev *pdev); |
|
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 */ |
|
|
|
struct platform_device; |
|
|
|
extern int ata_platform_remove_one(struct platform_device *pdev); |
|
|
|
/* |
|
* 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 void ata_port_wait_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 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); |
|
extern void ata_std_sched_eh(struct ata_port *ap); |
|
extern void ata_std_end_eh(struct ata_port *ap); |
|
extern int ata_link_nr_enabled(struct ata_link *link); |
|
|
|
/* |
|
* 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; |
|
extern struct device_attribute *ata_common_sdev_attrs[]; |
|
|
|
/* |
|
* All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated |
|
* by the edge drivers. Because the 'module' field of sht must be the |
|
* edge driver's module reference, otherwise the driver can be unloaded |
|
* even if the scsi_device is being accessed. |
|
*/ |
|
#define __ATA_BASE_SHT(drv_name) \ |
|
.module = THIS_MODULE, \ |
|
.name = drv_name, \ |
|
.ioctl = ata_scsi_ioctl, \ |
|
ATA_SCSI_COMPAT_IOCTL \ |
|
.queuecommand = ata_scsi_queuecmd, \ |
|
.dma_need_drain = ata_scsi_dma_need_drain, \ |
|
.can_queue = ATA_DEF_QUEUE, \ |
|
.tag_alloc_policy = BLK_TAG_ALLOC_RR, \ |
|
.this_id = ATA_SHT_THIS_ID, \ |
|
.emulated = ATA_SHT_EMULATED, \ |
|
.proc_name = drv_name, \ |
|
.slave_configure = ata_scsi_slave_config, \ |
|
.slave_destroy = ata_scsi_slave_destroy, \ |
|
.bios_param = ata_std_bios_param, \ |
|
.unlock_native_capacity = ata_scsi_unlock_native_capacity |
|
|
|
#define ATA_BASE_SHT(drv_name) \ |
|
__ATA_BASE_SHT(drv_name), \ |
|
.sdev_attrs = ata_common_sdev_attrs |
|
|
|
#ifdef CONFIG_SATA_HOST |
|
extern struct device_attribute *ata_ncq_sdev_attrs[]; |
|
|
|
#define ATA_NCQ_SHT(drv_name) \ |
|
__ATA_BASE_SHT(drv_name), \ |
|
.sdev_attrs = ata_ncq_sdev_attrs, \ |
|
.change_queue_depth = ata_scsi_change_queue_depth |
|
#endif |
|
|
|
/* |
|
* 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 bool ata_is_host_link(const struct ata_link *link) |
|
{ |
|
return link == &link->ap->link || link == link->ap->slave_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 bool 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 |
|
*/ |
|
__printf(3, 4) |
|
void ata_port_printk(const struct ata_port *ap, const char *level, |
|
const char *fmt, ...); |
|
__printf(3, 4) |
|
void ata_link_printk(const struct ata_link *link, const char *level, |
|
const char *fmt, ...); |
|
__printf(3, 4) |
|
void ata_dev_printk(const struct ata_device *dev, const char *level, |
|
const char *fmt, ...); |
|
|
|
#define ata_port_err(ap, fmt, ...) \ |
|
ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__) |
|
#define ata_port_warn(ap, fmt, ...) \ |
|
ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__) |
|
#define ata_port_notice(ap, fmt, ...) \ |
|
ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__) |
|
#define ata_port_info(ap, fmt, ...) \ |
|
ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__) |
|
#define ata_port_dbg(ap, fmt, ...) \ |
|
ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__) |
|
|
|
#define ata_link_err(link, fmt, ...) \ |
|
ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__) |
|
#define ata_link_warn(link, fmt, ...) \ |
|
ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__) |
|
#define ata_link_notice(link, fmt, ...) \ |
|
ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__) |
|
#define ata_link_info(link, fmt, ...) \ |
|
ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__) |
|
#define ata_link_dbg(link, fmt, ...) \ |
|
ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__) |
|
|
|
#define ata_dev_err(dev, fmt, ...) \ |
|
ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__) |
|
#define ata_dev_warn(dev, fmt, ...) \ |
|
ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__) |
|
#define ata_dev_notice(dev, fmt, ...) \ |
|
ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__) |
|
#define ata_dev_info(dev, fmt, ...) \ |
|
ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__) |
|
#define ata_dev_dbg(dev, fmt, ...) \ |
|
ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__) |
|
|
|
void ata_print_version(const struct device *dev, const char *version); |
|
|
|
/* |
|
* ata_eh_info helpers |
|
*/ |
|
extern __printf(2, 3) |
|
void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); |
|
extern __printf(2, 3) |
|
void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); |
|
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 __printf(2, 3) |
|
void ata_port_desc(struct ata_port *ap, const char *fmt, ...); |
|
#ifdef CONFIG_PCI |
|
extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, |
|
const char *name); |
|
#endif |
|
|
|
static inline bool ata_tag_internal(unsigned int tag) |
|
{ |
|
return tag == ATA_TAG_INTERNAL; |
|
} |
|
|
|
static inline bool ata_tag_valid(unsigned int tag) |
|
{ |
|
return tag < ATA_MAX_QUEUE || ata_tag_internal(tag); |
|
} |
|
|
|
#define __ata_qc_for_each(ap, qc, tag, max_tag, fn) \ |
|
for ((tag) = 0; (tag) < (max_tag) && \ |
|
({ qc = fn((ap), (tag)); 1; }); (tag)++) \ |
|
|
|
/* |
|
* Internal use only, iterate commands ignoring error handling and |
|
* status of 'qc'. |
|
*/ |
|
#define ata_qc_for_each_raw(ap, qc, tag) \ |
|
__ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, __ata_qc_from_tag) |
|
|
|
/* |
|
* Iterate all potential commands that can be queued |
|
*/ |
|
#define ata_qc_for_each(ap, qc, tag) \ |
|
__ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, ata_qc_from_tag) |
|
|
|
/* |
|
* Like ata_qc_for_each, but with the internal tag included |
|
*/ |
|
#define ata_qc_for_each_with_internal(ap, qc, tag) \ |
|
__ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE + 1, ata_qc_from_tag) |
|
|
|
/* |
|
* 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 || |
|
class == ATA_DEV_ZAC; |
|
} |
|
|
|
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 || |
|
class == ATA_DEV_ZAC_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; |
|
} |
|
|
|
/* |
|
* Iterators |
|
* |
|
* ATA_LITER_* constants are used to select link iteration mode and |
|
* ATA_DITER_* device iteration mode. |
|
* |
|
* For a custom iteration directly using ata_{link|dev}_next(), if |
|
* @link or @dev, respectively, is NULL, the first element is |
|
* returned. @dev and @link can be any valid device or link and the |
|
* next element according to the iteration mode will be returned. |
|
* After the last element, NULL is returned. |
|
*/ |
|
enum ata_link_iter_mode { |
|
ATA_LITER_EDGE, /* if present, PMP links only; otherwise, |
|
* host link. no slave link */ |
|
ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */ |
|
ATA_LITER_PMP_FIRST, /* PMP links followed by host link, |
|
* slave link still comes after host link */ |
|
}; |
|
|
|
enum ata_dev_iter_mode { |
|
ATA_DITER_ENABLED, |
|
ATA_DITER_ENABLED_REVERSE, |
|
ATA_DITER_ALL, |
|
ATA_DITER_ALL_REVERSE, |
|
}; |
|
|
|
extern struct ata_link *ata_link_next(struct ata_link *link, |
|
struct ata_port *ap, |
|
enum ata_link_iter_mode mode); |
|
|
|
extern struct ata_device *ata_dev_next(struct ata_device *dev, |
|
struct ata_link *link, |
|
enum ata_dev_iter_mode mode); |
|
|
|
/* |
|
* Shortcut notation for iterations |
|
* |
|
* ata_for_each_link() iterates over each link of @ap according to |
|
* @mode. @link points to the current link in the loop. @link is |
|
* NULL after loop termination. ata_for_each_dev() works the same way |
|
* except that it iterates over each device of @link. |
|
* |
|
* Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be |
|
* specified when using the following shorthand notations. Only the |
|
* mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be |
|
* specified. This not only increases brevity but also makes it |
|
* impossible to use ATA_LITER_* for device iteration or vice-versa. |
|
*/ |
|
#define ata_for_each_link(link, ap, mode) \ |
|
for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \ |
|
(link) = ata_link_next((link), (ap), ATA_LITER_##mode)) |
|
|
|
#define ata_for_each_dev(dev, link, mode) \ |
|
for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \ |
|
(dev) = ata_dev_next((dev), (link), ATA_DITER_##mode)) |
|
|
|
/** |
|
* 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) |
|
{ |
|
if (!IS_ENABLED(CONFIG_SATA_HOST)) |
|
return 0; |
|
return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | |
|
ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; |
|
} |
|
|
|
static inline bool ata_fpdma_dsm_supported(struct ata_device *dev) |
|
{ |
|
return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && |
|
(dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] & |
|
ATA_LOG_NCQ_SEND_RECV_DSM_TRIM); |
|
} |
|
|
|
static inline bool ata_fpdma_read_log_supported(struct ata_device *dev) |
|
{ |
|
return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && |
|
(dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET] & |
|
ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED); |
|
} |
|
|
|
static inline bool ata_fpdma_zac_mgmt_in_supported(struct ata_device *dev) |
|
{ |
|
return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && |
|
(dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET] & |
|
ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED); |
|
} |
|
|
|
static inline bool ata_fpdma_zac_mgmt_out_supported(struct ata_device *dev) |
|
{ |
|
return (dev->ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET] & |
|
ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT); |
|
} |
|
|
|
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 (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)); |
|
|
|
#ifdef CONFIG_ATA_SFF |
|
tf->ctl = dev->link->ap->ctl; |
|
#else |
|
tf->ctl = ATA_DEVCTL_OBS; |
|
#endif |
|
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]; |
|
} |
|
|
|
static inline int ata_check_ready(u8 status) |
|
{ |
|
if (!(status & ATA_BUSY)) |
|
return 1; |
|
|
|
/* 0xff indicates either no device or device not ready */ |
|
if (status == 0xff) |
|
return -ENODEV; |
|
|
|
return 0; |
|
} |
|
|
|
static inline unsigned long ata_deadline(unsigned long from_jiffies, |
|
unsigned long timeout_msecs) |
|
{ |
|
return from_jiffies + msecs_to_jiffies(timeout_msecs); |
|
} |
|
|
|
/* Don't open code these in drivers as there are traps. Firstly the range may |
|
change in future hardware and specs, secondly 0xFF means 'no DMA' but is |
|
> UDMA_0. Dyma ddreigiau */ |
|
|
|
static inline int ata_using_mwdma(struct ata_device *adev) |
|
{ |
|
if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4) |
|
return 1; |
|
return 0; |
|
} |
|
|
|
static inline int ata_using_udma(struct ata_device *adev) |
|
{ |
|
if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7) |
|
return 1; |
|
return 0; |
|
} |
|
|
|
static inline int ata_dma_enabled(struct ata_device *adev) |
|
{ |
|
return (adev->dma_mode == 0xFF ? 0 : 1); |
|
} |
|
|
|
/************************************************************************** |
|
* PATA timings - drivers/ata/libata-pata-timings.c |
|
*/ |
|
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); |
|
|
|
/************************************************************************** |
|
* 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_bmdma32_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 |
|
|
|
extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); |
|
extern u8 ata_sff_check_status(struct ata_port *ap); |
|
extern void ata_sff_pause(struct ata_port *ap); |
|
extern void ata_sff_dma_pause(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_queued_cmd *qc, |
|
unsigned char *buf, unsigned int buflen, int rw); |
|
extern unsigned int ata_sff_data_xfer32(struct ata_queued_cmd *qc, |
|
unsigned char *buf, unsigned int buflen, int rw); |
|
extern void 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 void ata_sff_queue_work(struct work_struct *work); |
|
extern void ata_sff_queue_delayed_work(struct delayed_work *dwork, |
|
unsigned long delay); |
|
extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay); |
|
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_port_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_lost_interrupt(struct ata_port *ap); |
|
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_drain_fifo(struct ata_queued_cmd *qc); |
|
extern void ata_sff_error_handler(struct ata_port *ap); |
|
extern void ata_sff_std_ports(struct ata_ioports *ioaddr); |
|
#ifdef CONFIG_PCI |
|
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, int hflags); |
|
#endif /* CONFIG_PCI */ |
|
|
|
#ifdef CONFIG_ATA_BMDMA |
|
|
|
extern const struct ata_port_operations ata_bmdma_port_ops; |
|
|
|
#define ATA_BMDMA_SHT(drv_name) \ |
|
ATA_BASE_SHT(drv_name), \ |
|
.sg_tablesize = LIBATA_MAX_PRD, \ |
|
.dma_boundary = ATA_DMA_BOUNDARY |
|
|
|
extern enum ata_completion_errors ata_bmdma_qc_prep(struct ata_queued_cmd *qc); |
|
extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc); |
|
extern enum ata_completion_errors ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc); |
|
extern unsigned int ata_bmdma_port_intr(struct ata_port *ap, |
|
struct ata_queued_cmd *qc); |
|
extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance); |
|
extern void ata_bmdma_error_handler(struct ata_port *ap); |
|
extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc); |
|
extern void ata_bmdma_irq_clear(struct ata_port *ap); |
|
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 int ata_bmdma_port_start(struct ata_port *ap); |
|
extern int ata_bmdma_port_start32(struct ata_port *ap); |
|
|
|
#ifdef CONFIG_PCI |
|
extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); |
|
extern void ata_pci_bmdma_init(struct ata_host *host); |
|
extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev, |
|
const struct ata_port_info * const * ppi, |
|
struct ata_host **r_host); |
|
extern int ata_pci_bmdma_init_one(struct pci_dev *pdev, |
|
const struct ata_port_info * const * ppi, |
|
struct scsi_host_template *sht, |
|
void *host_priv, int hflags); |
|
#endif /* CONFIG_PCI */ |
|
#endif /* CONFIG_ATA_BMDMA */ |
|
|
|
/** |
|
* 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__ */
|
|
|