| /* |
| * Copyright 2003-2005 Red Hat, Inc. All rights reserved. |
| * Copyright 2003-2005 Jeff Garzik |
| * |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2, or (at your option) |
| * any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; see the file COPYING. If not, write to |
| * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
| * |
| * |
| * libata documentation is available via 'make {ps|pdf}docs', |
| * as Documentation/DocBook/libata.* |
| * |
| */ |
| |
| #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> |
| |
| /* |
| * 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 BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args) |
| |
| #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, |
| /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */ |
| ATA_MAX_QUEUE = 32, |
| ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1, |
| 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, |
| ATA_SHT_USE_CLUSTERING = 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_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_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 */ |
| 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_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_NCQ_LOG = (1 << 23), /* don't use NCQ for log read */ |
| ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */ |
| ATA_HORKAGE_MAX_SEC_1024 = (1 << 25), /* Limit max sects to 1024 */ |
| |
| /* 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_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_MIN_POWER, |
| }; |
| |
| 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_link_power_management_policy; |
| extern struct device_attribute dev_attr_unload_heads; |
| 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; |
| |
| 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 mutex eh_mutex; |
| struct task_struct *eh_owner; |
| |
| 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; |
| 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]; |
| unsigned long sas_tag_allocated; /* for sas tag allocation only */ |
| unsigned int 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; |
| |
| 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); |
| 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); |
| 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_device *dev, |
| 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 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 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 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 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_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy, |
| bool spm_wakeup); |
| 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 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_slave_link_init(struct ata_port *ap); |
| 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, int cmd, void __user *arg); |
| extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd); |
| extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev, |
| int cmd, void __user *arg); |
| 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 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 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 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 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_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 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 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); |
| 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); |
| extern bool sata_lpm_ignore_phy_events(struct ata_link *link); |
| |
| 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 */ |
| |
| 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 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_eh_analyze_ncq_error(struct ata_link *link); |
| |
| 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, \ |
| .queuecommand = ata_scsi_queuecmd, \ |
| .can_queue = ATA_DEF_QUEUE, \ |
| .tag_alloc_policy = BLK_TAG_ALLOC_RR, \ |
| .this_id = ATA_SHT_THIS_ID, \ |
| .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, \ |
| .unlock_native_capacity = ata_scsi_unlock_native_capacity, \ |
| .sdev_attrs = ata_common_sdev_attrs |
| |
| #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 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 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 || |
| 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) |
| { |
| 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 (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)); |
| |
| #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); |
| } |
| |
| /************************************************************************** |
| * 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_device *dev, |
| unsigned char *buf, unsigned int buflen, int rw); |
| extern unsigned int ata_sff_data_xfer32(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 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 void ata_bmdma_qc_prep(struct ata_queued_cmd *qc); |
| extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc); |
| extern void 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__ */ |