diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/ata.h | 34 | ||||
| -rw-r--r-- | include/linux/libata.h | 381 |
2 files changed, 300 insertions, 115 deletions
diff --git a/include/linux/ata.h b/include/linux/ata.h index 312a2c0..c494e1c 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -97,6 +97,9 @@ enum { ATA_DRQ = (1 << 3), /* data request i/o */ ATA_ERR = (1 << 0), /* have an error */ ATA_SRST = (1 << 2), /* software reset */ + ATA_ICRC = (1 << 7), /* interface CRC error */ + ATA_UNC = (1 << 6), /* uncorrectable media error */ + ATA_IDNF = (1 << 4), /* ID not found */ ATA_ABORTED = (1 << 2), /* command aborted */ /* ATA command block registers */ @@ -130,6 +133,8 @@ enum { ATA_CMD_WRITE = 0xCA, ATA_CMD_WRITE_EXT = 0x35, ATA_CMD_WRITE_FUA_EXT = 0x3D, + ATA_CMD_FPDMA_READ = 0x60, + ATA_CMD_FPDMA_WRITE = 0x61, ATA_CMD_PIO_READ = 0x20, ATA_CMD_PIO_READ_EXT = 0x24, ATA_CMD_PIO_WRITE = 0x30, @@ -148,6 +153,10 @@ enum { ATA_CMD_INIT_DEV_PARAMS = 0x91, ATA_CMD_READ_NATIVE_MAX = 0xF8, ATA_CMD_READ_NATIVE_MAX_EXT = 0x27, + ATA_CMD_READ_LOG_EXT = 0x2f, + + /* READ_LOG_EXT pages */ + ATA_LOG_SATA_NCQ = 0x10, /* SETFEATURES stuff */ SETFEATURES_XFER = 0x03, @@ -192,6 +201,16 @@ enum { SCR_ACTIVE = 3, SCR_NOTIFICATION = 4, + /* SError bits */ + SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */ + SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */ + SERR_DATA = (1 << 8), /* unrecovered data error */ + SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */ + SERR_PROTOCOL = (1 << 10), /* protocol violation */ + SERR_INTERNAL = (1 << 11), /* host internal error */ + SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */ + SERR_DEV_XCHG = (1 << 26), /* device exchanged */ + /* struct ata_taskfile flags */ ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */ ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */ @@ -199,6 +218,7 @@ enum { ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */ ATA_TFLAG_LBA = (1 << 4), /* enable LBA */ ATA_TFLAG_FUA = (1 << 5), /* enable FUA */ + ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */ }; enum ata_tf_protocols { @@ -207,6 +227,7 @@ enum ata_tf_protocols { ATA_PROT_NODATA, /* no data */ ATA_PROT_PIO, /* PIO single sector */ ATA_PROT_DMA, /* DMA */ + ATA_PROT_NCQ, /* NCQ */ ATA_PROT_ATAPI, /* packet command, PIO data xfer*/ ATA_PROT_ATAPI_NODATA, /* packet command, no data */ ATA_PROT_ATAPI_DMA, /* packet command with special DMA sauce */ @@ -262,6 +283,8 @@ struct ata_taskfile { #define ata_id_has_pm(id) ((id)[82] & (1 << 3)) #define ata_id_has_lba(id) ((id)[49] & (1 << 9)) #define ata_id_has_dma(id) ((id)[49] & (1 << 8)) +#define ata_id_has_ncq(id) ((id)[76] & (1 << 8)) +#define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1) #define ata_id_removeable(id) ((id)[0] & (1 << 7)) #define ata_id_has_dword_io(id) ((id)[50] & (1 << 0)) #define ata_id_u32(id,n) \ @@ -272,6 +295,8 @@ struct ata_taskfile { ((u64) (id)[(n) + 1] << 16) | \ ((u64) (id)[(n) + 0]) ) +#define ata_id_cdb_intr(id) (((id)[0] & 0x60) == 0x20) + static inline unsigned int ata_id_major_version(const u16 *id) { unsigned int mver; @@ -311,6 +336,15 @@ static inline int is_atapi_taskfile(const struct ata_taskfile *tf) (tf->protocol == ATA_PROT_ATAPI_DMA); } +static inline int is_multi_taskfile(struct ata_taskfile *tf) +{ + return (tf->command == ATA_CMD_READ_MULTI) || + (tf->command == ATA_CMD_WRITE_MULTI) || + (tf->command == ATA_CMD_READ_MULTI_EXT) || + (tf->command == ATA_CMD_WRITE_MULTI_EXT) || + (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); +} + static inline int ata_ok(u8 status) { return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR)) diff --git a/include/linux/libata.h b/include/linux/libata.h index b80d2e7..c51502c 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -33,6 +33,7 @@ #include <asm/io.h> #include <linux/ata.h> #include <linux/workqueue.h> +#include <scsi/scsi_host.h> /* * compile-time options: to be removed as soon as all the drivers are @@ -44,7 +45,6 @@ #undef ATA_NDEBUG /* define to disable quick runtime checks */ #undef ATA_ENABLE_PATA /* define to enable PATA support in some * low-level drivers */ -#undef ATAPI_ENABLE_DMADIR /* enables ATAPI DMADIR bridge support */ /* note: prints function name for you */ @@ -108,8 +108,11 @@ enum { LIBATA_MAX_PRD = ATA_MAX_PRD / 2, ATA_MAX_PORTS = 8, ATA_DEF_QUEUE = 1, - ATA_MAX_QUEUE = 1, + /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */ + ATA_MAX_QUEUE = 32, + ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1, ATA_MAX_SECTORS = 200, /* FIXME */ + ATA_MAX_SECTORS_LBA48 = 65535, ATA_MAX_BUS = 2, ATA_DEF_BUSY_WAIT = 10000, ATA_SHORT_PAUSE = (HZ >> 6) + 1, @@ -120,9 +123,13 @@ enum { ATA_SHT_USE_CLUSTERING = 1, /* struct ata_device stuff */ - ATA_DFLAG_LBA48 = (1 << 0), /* device supports LBA48 */ - ATA_DFLAG_PIO = (1 << 1), /* device currently in PIO mode */ - ATA_DFLAG_LBA = (1 << 2), /* device supports LBA */ + 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_CFG_MASK = (1 << 8) - 1, + + ATA_DFLAG_PIO = (1 << 8), /* device currently in PIO mode */ ATA_DEV_UNKNOWN = 0, /* unknown device */ ATA_DEV_ATA = 1, /* ATA device */ @@ -132,43 +139,51 @@ enum { ATA_DEV_NONE = 5, /* no device */ /* struct ata_port flags */ - ATA_FLAG_SLAVE_POSS = (1 << 1), /* host supports slave dev */ + ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ /* (doesn't imply presence) */ - ATA_FLAG_PORT_DISABLED = (1 << 2), /* port is disabled, ignore it */ - ATA_FLAG_SATA = (1 << 3), - ATA_FLAG_NO_LEGACY = (1 << 4), /* no legacy mode check */ - ATA_FLAG_SRST = (1 << 5), /* (obsolete) use ATA SRST, not E.D.D. */ - ATA_FLAG_MMIO = (1 << 6), /* use MMIO, not PIO */ - ATA_FLAG_SATA_RESET = (1 << 7), /* (obsolete) use COMRESET */ - ATA_FLAG_PIO_DMA = (1 << 8), /* PIO cmds via DMA */ - ATA_FLAG_NOINTR = (1 << 9), /* FIXME: Remove this once - * proper HSM is in place. */ - ATA_FLAG_DEBUGMSG = (1 << 10), - ATA_FLAG_NO_ATAPI = (1 << 11), /* No ATAPI support */ - - ATA_FLAG_SUSPENDED = (1 << 12), /* port is suspended */ - - ATA_FLAG_PIO_LBA48 = (1 << 13), /* Host DMA engine is LBA28 only */ - ATA_FLAG_IRQ_MASK = (1 << 14), /* Mask IRQ in PIO xfers */ - - ATA_FLAG_FLUSH_PORT_TASK = (1 << 15), /* Flush port task */ - ATA_FLAG_IN_EH = (1 << 16), /* EH in progress */ - - ATA_QCFLAG_ACTIVE = (1 << 1), /* cmd not yet ack'd to scsi lyer */ - ATA_QCFLAG_SG = (1 << 3), /* have s/g table? */ - ATA_QCFLAG_SINGLE = (1 << 4), /* no s/g, just a single buffer */ + ATA_FLAG_SATA = (1 << 1), + ATA_FLAG_NO_LEGACY = (1 << 2), /* no legacy mode check */ + ATA_FLAG_MMIO = (1 << 3), /* use MMIO, not PIO */ + ATA_FLAG_SRST = (1 << 4), /* (obsolete) use ATA SRST, not E.D.D. */ + ATA_FLAG_SATA_RESET = (1 << 5), /* (obsolete) use COMRESET */ + 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_IRQ_MASK = (1 << 9), /* Mask IRQ in PIO xfers */ + ATA_FLAG_PIO_POLLING = (1 << 10), /* use polling PIO if LLD + * doesn't handle PIO interrupts */ + ATA_FLAG_NCQ = (1 << 11), /* host supports NCQ */ + + ATA_FLAG_DEBUGMSG = (1 << 14), + ATA_FLAG_FLUSH_PORT_TASK = (1 << 15), /* flush port task */ + + ATA_FLAG_EH_PENDING = (1 << 16), /* EH pending */ + ATA_FLAG_FROZEN = (1 << 17), /* port is frozen */ + ATA_FLAG_RECOVERED = (1 << 18), /* recovery action performed */ + + ATA_FLAG_DISABLED = (1 << 22), /* port is disabled, ignore it */ + ATA_FLAG_SUSPENDED = (1 << 23), /* port is suspended (power) */ + + /* bits 24:31 of ap->flags are reserved for LLDD specific flags */ + + /* struct ata_queued_cmd flags */ + ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ + ATA_QCFLAG_SG = (1 << 1), /* have s/g table? */ + ATA_QCFLAG_SINGLE = (1 << 2), /* no s/g, just a single buffer */ ATA_QCFLAG_DMAMAP = ATA_QCFLAG_SG | ATA_QCFLAG_SINGLE, - ATA_QCFLAG_EH_SCHEDULED = (1 << 5), /* EH scheduled */ + ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ + ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ + + 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_set only */ /* various lengths of time */ - ATA_TMOUT_PIO = 30 * HZ, ATA_TMOUT_BOOT = 30 * HZ, /* heuristic */ ATA_TMOUT_BOOT_QUICK = 7 * HZ, /* heuristic */ - ATA_TMOUT_CDB = 30 * HZ, - ATA_TMOUT_CDB_QUICK = 5 * HZ, ATA_TMOUT_INTERNAL = 30 * HZ, ATA_TMOUT_INTERNAL_QUICK = 5 * HZ, @@ -207,21 +222,44 @@ enum { /* size of buffer to pad xfers ending on unaligned boundaries */ ATA_DMA_PAD_SZ = 4, ATA_DMA_PAD_BUF_SZ = ATA_DMA_PAD_SZ * ATA_MAX_QUEUE, - - /* Masks for port functions */ + + /* masks for port functions */ ATA_PORT_PRIMARY = (1 << 0), ATA_PORT_SECONDARY = (1 << 1), + + /* ering size */ + ATA_ERING_SIZE = 32, + + /* 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), + ATA_EH_HARDRESET = (1 << 2), + + ATA_EH_RESET_MASK = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, + + /* ata_eh_info->flags */ + ATA_EHI_DID_RESET = (1 << 0), /* already reset this port */ + + /* max repeat if error condition is still set after ->error_handler */ + ATA_EH_MAX_REPEAT = 5, + + /* how hard are we gonna try to probe/recover devices */ + ATA_PROBE_MAX_TRIES = 3, + ATA_EH_RESET_TRIES = 3, + ATA_EH_DEV_TRIES = 3, }; enum hsm_task_states { - HSM_ST_UNKNOWN, - HSM_ST_IDLE, - HSM_ST_POLL, - HSM_ST_TMOUT, - HSM_ST, - HSM_ST_LAST, - HSM_ST_LAST_POLL, - HSM_ST_ERR, + HSM_ST_UNKNOWN, /* state unknown */ + HSM_ST_IDLE, /* no command on going */ + HSM_ST, /* (waiting the device to) transfer data */ + HSM_ST_LAST, /* (waiting the device to) complete command */ + HSM_ST_ERR, /* error */ + HSM_ST_FIRST, /* (waiting the device to) + write CDB or first data block */ }; enum ata_completion_errors { @@ -245,7 +283,7 @@ struct ata_queued_cmd; /* typedefs */ typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); typedef void (*ata_probeinit_fn_t)(struct ata_port *); -typedef int (*ata_reset_fn_t)(struct ata_port *, int, unsigned int *); +typedef int (*ata_reset_fn_t)(struct ata_port *, unsigned int *); typedef void (*ata_postreset_fn_t)(struct ata_port *ap, unsigned int *); struct ata_ioports { @@ -336,7 +374,7 @@ struct ata_queued_cmd { struct scatterlist *__sg; unsigned int err_mask; - + struct ata_taskfile result_tf; ata_qc_cb_t complete_fn; void *private_data; @@ -348,12 +386,24 @@ struct ata_host_stats { unsigned long rw_reqbuf; }; +struct ata_ering_entry { + int is_io; + unsigned int err_mask; + u64 timestamp; +}; + +struct ata_ering { + int cursor; + struct ata_ering_entry ring[ATA_ERING_SIZE]; +}; + struct ata_device { + struct ata_port *ap; u64 n_sectors; /* size of device, if ATA */ unsigned long flags; /* ATA_DFLAG_xxx */ unsigned int class; /* ATA_DEV_xxx */ unsigned int devno; /* 0 or 1 */ - u16 *id; /* IDENTIFY xxx DEVICE data */ + u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ u8 pio_mode; u8 dma_mode; u8 xfer_mode; @@ -373,6 +423,24 @@ struct ata_device { u16 cylinders; /* Number of cylinders */ u16 heads; /* Number of heads */ u16 sectors; /* Number of sectors per track */ + + /* error history */ + struct ata_ering 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 flags; /* ATA_EHI_* flags */ + char desc[ATA_EH_DESC_LEN]; + int desc_len; +}; + +struct ata_eh_context { + struct ata_eh_info i; + int tries[ATA_MAX_DEVICES]; }; struct ata_port { @@ -397,12 +465,21 @@ struct ata_port { unsigned int mwdma_mask; unsigned int udma_mask; unsigned int cbl; /* cable type; ATA_CBL_xxx */ + unsigned int sata_spd_limit; /* SATA PHY speed limit */ + + /* record runtime error info, protected by host_set lock */ + struct ata_eh_info eh_info; + /* EH context owned by EH */ + struct ata_eh_context eh_context; struct ata_device device[ATA_MAX_DEVICES]; struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; - unsigned long qactive; + unsigned long qc_allocated; + unsigned int qc_active; + unsigned int active_tag; + u32 sactive; struct ata_host_stats stats; struct ata_host_set *host_set; @@ -411,12 +488,13 @@ struct ata_port { struct work_struct port_task; unsigned int hsm_task_state; - unsigned long pio_task_timeout; u32 msg_enable; struct list_head eh_done_q; void *private_data; + + u8 sector_buf[ATA_SECT_SIZE]; /* owned by EH */ }; struct ata_port_operations { @@ -450,7 +528,15 @@ struct ata_port_operations { void (*qc_prep) (struct ata_queued_cmd *qc); unsigned int (*qc_issue) (struct ata_queued_cmd *qc); - void (*eng_timeout) (struct ata_port *ap); + /* Error handlers. ->error_handler overrides ->eng_timeout and + * indicates that new-style EH is in place. + */ + void (*eng_timeout) (struct ata_port *ap); /* obsolete */ + + void (*freeze) (struct ata_port *ap); + void (*thaw) (struct ata_port *ap); + void (*error_handler) (struct ata_port *ap); + void (*post_internal_cmd) (struct ata_queued_cmd *qc); irqreturn_t (*irq_handler)(int, void *, struct pt_regs *); void (*irq_clear) (struct ata_port *); @@ -496,18 +582,16 @@ extern void ata_port_probe(struct ata_port *); extern void __sata_phy_reset(struct ata_port *ap); extern void sata_phy_reset(struct ata_port *ap); extern void ata_bus_reset(struct ata_port *ap); +extern int sata_set_spd(struct ata_port *ap); extern int ata_drive_probe_reset(struct ata_port *ap, ata_probeinit_fn_t probeinit, ata_reset_fn_t softreset, ata_reset_fn_t hardreset, ata_postreset_fn_t postreset, unsigned int *classes); extern void ata_std_probeinit(struct ata_port *ap); -extern int ata_std_softreset(struct ata_port *ap, int verbose, - unsigned int *classes); -extern int sata_std_hardreset(struct ata_port *ap, int verbose, - unsigned int *class); +extern int ata_std_softreset(struct ata_port *ap, unsigned int *classes); +extern int sata_std_hardreset(struct ata_port *ap, unsigned int *class); extern void ata_std_postreset(struct ata_port *ap, unsigned int *classes); -extern int ata_dev_revalidate(struct ata_port *ap, struct ata_device *dev, - int post_reset); +extern int ata_dev_revalidate(struct ata_device *dev, int post_reset); extern void ata_port_disable(struct ata_port *); extern void ata_std_ports(struct ata_ioports *ioaddr); #ifdef CONFIG_PCI @@ -523,20 +607,27 @@ extern void ata_host_set_remove(struct ata_host_set *host_set); extern int ata_scsi_detect(struct scsi_host_template *sht); extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)); -extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); -extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); extern int ata_scsi_release(struct Scsi_Host *host); extern unsigned int ata_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc); +extern int sata_scr_valid(struct ata_port *ap); +extern int sata_scr_read(struct ata_port *ap, int reg, u32 *val); +extern int sata_scr_write(struct ata_port *ap, int reg, u32 val); +extern int sata_scr_write_flush(struct ata_port *ap, int reg, u32 val); +extern int ata_port_online(struct ata_port *ap); +extern int ata_port_offline(struct ata_port *ap); extern int ata_scsi_device_resume(struct scsi_device *); extern int ata_scsi_device_suspend(struct scsi_device *, pm_message_t state); -extern int ata_device_resume(struct ata_port *, struct ata_device *); -extern int ata_device_suspend(struct ata_port *, struct ata_device *, pm_message_t state); +extern int ata_device_resume(struct ata_device *); +extern int ata_device_suspend(struct ata_device *, pm_message_t state); extern int ata_ratelimit(void); extern unsigned int ata_busy_sleep(struct ata_port *ap, unsigned long timeout_pat, unsigned long timeout); extern void ata_port_queue_task(struct ata_port *ap, void (*fn)(void *), void *data, unsigned long delay); +extern u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val, + unsigned long interval_msec, + unsigned long timeout_msec); /* * Default driver ops implementations @@ -572,17 +663,26 @@ extern void ata_bmdma_start (struct ata_queued_cmd *qc); extern void ata_bmdma_stop(struct ata_queued_cmd *qc); extern u8 ata_bmdma_status(struct ata_port *ap); extern void ata_bmdma_irq_clear(struct ata_port *ap); -extern void __ata_qc_complete(struct ata_queued_cmd *qc); -extern void ata_eng_timeout(struct ata_port *ap); -extern void ata_scsi_simulate(struct ata_port *ap, struct ata_device *dev, - struct scsi_cmnd *cmd, +extern void ata_bmdma_freeze(struct ata_port *ap); +extern void ata_bmdma_thaw(struct ata_port *ap); +extern void ata_bmdma_drive_eh(struct ata_port *ap, + ata_reset_fn_t softreset, + ata_reset_fn_t hardreset, + ata_postreset_fn_t postreset); +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_qc_complete(struct ata_queued_cmd *qc); +extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active, + void (*finish_qc)(struct ata_queued_cmd *)); +extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)); extern int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int geom[]); extern int ata_scsi_slave_config(struct scsi_device *sdev); -extern struct ata_device *ata_dev_pair(struct ata_port *ap, - struct ata_device *adev); +extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, + int queue_depth); +extern struct ata_device *ata_dev_pair(struct ata_device *adev); /* * Timing helpers @@ -628,7 +728,50 @@ extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bit extern unsigned long ata_pci_default_filter(const struct ata_port *, struct ata_device *, unsigned long); #endif /* CONFIG_PCI */ +/* + * EH + */ +extern void ata_eng_timeout(struct ata_port *ap); + +extern void ata_port_schedule_eh(struct ata_port *ap); +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_reset_fn_t softreset, + ata_reset_fn_t hardreset, ata_postreset_fn_t postreset); + +/* + * printk helpers + */ +#define ata_port_printk(ap, lv, fmt, args...) \ + printk(lv"ata%u: "fmt, (ap)->id , ##args) + +#define ata_dev_printk(dev, lv, fmt, args...) \ + printk(lv"ata%u.%02u: "fmt, (dev)->ap->id, (dev)->devno , ##args) + +/* + * ata_eh_info helpers + */ +#define ata_ehi_push_desc(ehi, fmt, args...) do { \ + (ehi)->desc_len += scnprintf((ehi)->desc + (ehi)->desc_len, \ + ATA_EH_DESC_LEN - (ehi)->desc_len, \ + fmt , ##args); \ +} while (0) + +#define ata_ehi_clear_desc(ehi) do { \ + (ehi)->desc[0] = '\0'; \ + (ehi)->desc_len = 0; \ +} while (0) +/* + * qc helpers + */ static inline int ata_sg_is_last(struct scatterlist *sg, struct ata_queued_cmd *qc) { @@ -671,14 +814,39 @@ static inline unsigned int ata_tag_valid(unsigned int tag) return (tag < ATA_MAX_QUEUE) ? 1 : 0; } -static inline unsigned int ata_class_present(unsigned int class) +static inline unsigned int ata_tag_internal(unsigned int tag) +{ + return tag == ATA_MAX_QUEUE - 1; +} + +static inline unsigned int ata_class_enabled(unsigned int class) { return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI; } -static inline unsigned int ata_dev_present(const struct ata_device *dev) +static inline unsigned int ata_class_disabled(unsigned int class) +{ + return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_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_present(dev->class); + return ata_class_absent(dev->class); } static inline u8 ata_chk_status(struct ata_port *ap) @@ -759,20 +927,35 @@ 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) +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 void ata_tf_init(struct ata_port *ap, struct ata_taskfile *tf, unsigned int device) +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 void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) { memset(tf, 0, sizeof(*tf)); - tf->ctl = ap->ctl; - if (device == 0) + tf->ctl = dev->ap->ctl; + if (dev->devno == 0) tf->device = ATA_DEVICE_OBS; else tf->device = ATA_DEVICE_OBS | ATA_DEV1; @@ -787,26 +970,11 @@ static inline void ata_qc_reinit(struct ata_queued_cmd *qc) qc->nbytes = qc->curbytes = 0; qc->err_mask = 0; - ata_tf_init(qc->ap, &qc->tf, qc->dev->devno); -} - -/** - * ata_qc_complete - Complete an active ATA command - * @qc: Command to complete - * @err_mask: ATA Status register contents - * - * Indicate to the mid and upper layers that an ATA - * command has completed, with either an ok or not-ok status. - * - * LOCKING: - * spin_lock_irqsave(host_set lock) - */ -static inline void ata_qc_complete(struct ata_queued_cmd *qc) -{ - if (unlikely(qc->flags & ATA_QCFLAG_EH_SCHEDULED)) - return; + ata_tf_init(qc->dev, &qc->tf); - __ata_qc_complete(qc); + /* init result_tf such that it indicates normal completion */ + qc->result_tf.command = ATA_DRDY; + qc->result_tf.feature = 0; } /** @@ -885,28 +1053,6 @@ static inline u8 ata_irq_ack(struct ata_port *ap, unsigned int chk_drq) return status; } -static inline u32 scr_read(struct ata_port *ap, unsigned int reg) -{ - return ap->ops->scr_read(ap, reg); -} - -static inline void scr_write(struct ata_port *ap, unsigned int reg, u32 val) -{ - ap->ops->scr_write(ap, reg, val); -} - -static inline void scr_write_flush(struct ata_port *ap, unsigned int reg, - u32 val) -{ - ap->ops->scr_write(ap, reg, val); - (void) ap->ops->scr_read(ap, reg); -} - -static inline unsigned int sata_dev_present(struct ata_port *ap) -{ - return ((scr_read(ap, SCR_STATUS) & 0xf) == 0x3) ? 1 : 0; -} - static inline int ata_try_flush_cache(const struct ata_device *dev) { return ata_id_wcache_enabled(dev->id) || @@ -916,7 +1062,7 @@ static inline int ata_try_flush_cache(const struct ata_device *dev) static inline unsigned int ac_err_mask(u8 status) { - if (status & ATA_BUSY) + if (status & (ATA_BUSY | ATA_DRQ)) return AC_ERR_HSM; if (status & (ATA_ERR | ATA_DF)) return AC_ERR_DEV; @@ -944,4 +1090,9 @@ static inline void ata_pad_free(struct ata_port *ap, struct device *dev) dma_free_coherent(dev, ATA_DMA_PAD_BUF_SZ, ap->pad, ap->pad_dma); } +static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) +{ + return (struct ata_port *) &host->hostdata[0]; +} + #endif /* __LINUX_LIBATA_H__ */ |
