#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
+#include <asm/scatterlist.h>
#include <asm/io.h>
#include <linux/ata.h>
#include <linux/workqueue.h>
+#include <scsi/scsi_host.h>
/*
- * compile-time options
+ * 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
+#include <asm-generic/libata-portmap.h>
+#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 */
-#undef ATA_ENABLE_PATA /* define to enable PATA support in some
+#define 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 */
#define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
-#ifdef ATA_NDEBUG
-#define assert(expr)
-#else
-#define assert(expr) \
- if(unlikely(!(expr))) { \
- printk(KERN_ERR "Assertion failed! %s,%s,%s,line=%d\n", \
- #expr,__FILE__,__FUNCTION__,__LINE__); \
- }
-#endif
+/* 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
/* move to PCI layer? */
+#define PCI_VDEVICE(vendor, device) \
+ PCI_VENDOR_ID_##vendor, (device), \
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0
+
static inline struct device *pci_dev_to_dev(struct pci_dev *pdev)
{
return &pdev->dev;
LIBATA_MAX_PRD = ATA_MAX_PRD / 2,
ATA_MAX_PORTS = 8,
ATA_DEF_QUEUE = 1,
- ATA_MAX_QUEUE = 1,
- ATA_MAX_SECTORS = 200, /* FIXME */
+ /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */
+ ATA_MAX_QUEUE = 32,
+ ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1,
ATA_MAX_BUS = 2,
ATA_DEF_BUSY_WAIT = 10000,
ATA_SHORT_PAUSE = (HZ >> 6) + 1,
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_LOCK_SECTORS = (1 << 2), /* don't adjust max_sectors */
- ATA_DFLAG_LBA = (1 << 3), /* 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_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */
+ ATA_DFLAG_CFG_MASK = (1 << 8) - 1,
+
+ ATA_DFLAG_PIO = (1 << 8), /* device limited to PIO mode */
+ ATA_DFLAG_NCQ_OFF = (1 << 9), /* device limited to non-NCQ mode */
+ ATA_DFLAG_SUSPENDED = (1 << 10), /* device suspended */
+ ATA_DFLAG_INIT_MASK = (1 << 16) - 1,
+
+ ATA_DFLAG_DETACH = (1 << 16),
+ ATA_DFLAG_DETACHED = (1 << 17),
ATA_DEV_UNKNOWN = 0, /* unknown device */
ATA_DEV_ATA = 1, /* ATA device */
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), /* use ATA SRST, not E.D.D. */
- ATA_FLAG_MMIO = (1 << 6), /* use MMIO, not PIO */
- ATA_FLAG_SATA_RESET = (1 << 7), /* 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_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_PIO_POLLING = (1 << 9), /* use polling PIO if LLD
+ * doesn't handle PIO interrupts */
+ ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */
+ ATA_FLAG_HRST_TO_RESUME = (1 << 11), /* hardreset to resume phy */
+ ATA_FLAG_SKIP_D2H_BSY = (1 << 12), /* can't wait for the first D2H
+ * Register FIS clearing BSY */
+ ATA_FLAG_DEBUGMSG = (1 << 13),
+ ATA_FLAG_SETXFER_POLLING= (1 << 14), /* use polling for SETXFER */
+ ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */
+
+ /* The following flag belongs to ap->pflags but is kept in
+ * ap->flags because it's referenced in many LLDs and will be
+ * removed in not-too-distant future.
+ */
+ ATA_FLAG_DISABLED = (1 << 23), /* port is disabled, ignore it */
+
+ /* 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_UNLOADING = (1 << 5), /* module is unloading */
+ ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */
+
+ ATA_PFLAG_FLUSH_PORT_TASK = (1 << 16), /* flush port task */
+ ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */
+ ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */
+
+ /* 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_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 only */
/* various lengths of time */
- ATA_TMOUT_EDD = 5 * HZ, /* heuristic */
- 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,
PORT_DISABLED = 2,
/* encoding various smaller bitmaps into a single
- * unsigned long bitmap
+ * unsigned int bitmap
*/
- ATA_SHIFT_UDMA = 0,
- ATA_SHIFT_MWDMA = 8,
- ATA_SHIFT_PIO = 11,
+ ATA_BITS_PIO = 7,
+ ATA_BITS_MWDMA = 5,
+ ATA_BITS_UDMA = 8,
+
+ ATA_SHIFT_PIO = 0,
+ ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_BITS_PIO,
+ ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_BITS_MWDMA,
+
+ ATA_MASK_PIO = ((1 << ATA_BITS_PIO) - 1) << ATA_SHIFT_PIO,
+ ATA_MASK_MWDMA = ((1 << ATA_BITS_MWDMA) - 1) << ATA_SHIFT_MWDMA,
+ ATA_MASK_UDMA = ((1 << ATA_BITS_UDMA) - 1) << ATA_SHIFT_UDMA,
/* 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_SUSPEND = (1 << 3),
+ ATA_EH_RESUME = (1 << 4),
+ ATA_EH_PM_FREEZE = (1 << 5),
+
+ ATA_EH_RESET_MASK = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
+ ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_SUSPEND |
+ ATA_EH_RESUME | ATA_EH_PM_FREEZE,
+
+ /* ata_eh_info->flags */
+ ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */
+ ATA_EHI_RESUME_LINK = (1 << 1), /* resume link (reset modifier) */
+ ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */
+ ATA_EHI_QUIET = (1 << 3), /* be quiet */
+
+ ATA_EHI_DID_RESET = (1 << 16), /* already reset this port */
+ ATA_EHI_PRINTINFO = (1 << 17), /* print configuration info */
+ ATA_EHI_SETMODE = (1 << 18), /* configure transfer mode */
+ ATA_EHI_POST_SETMODE = (1 << 19), /* revaildating after setmode */
+
+ ATA_EHI_RESET_MODIFIER_MASK = ATA_EHI_RESUME_LINK,
+
+ /* 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,
+
+ /* Drive spinup time (time from power-on to the first D2H FIS)
+ * in msecs - 8s currently. Failing to get ready in this time
+ * isn't critical. It will result in reset failure for
+ * controllers which can't wait for the first D2H FIS. libata
+ * will retry, so it just has to be long enough to spin up
+ * most devices.
+ */
+ ATA_SPINUP_WAIT = 8000,
+
+ /* Horkage types. May be set by libata or controller on drives
+ (some horkage may be drive/controller pair dependant */
+
+ ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */
+ ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */
+ ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */
};
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_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 {
- AC_ERR_OTHER = (1 << 0),
- AC_ERR_DEV = (1 << 1),
- AC_ERR_ATA_BUS = (1 << 2),
- AC_ERR_HOST_BUS = (1 << 3),
+ 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 */
};
/* forward declarations */
struct ata_queued_cmd;
/* typedefs */
-typedef int (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
+typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
+typedef int (*ata_prereset_fn_t)(struct ata_port *ap);
+typedef int (*ata_reset_fn_t)(struct ata_port *ap, unsigned int *classes);
+typedef void (*ata_postreset_fn_t)(struct ata_port *ap, unsigned int *classes);
struct ata_ioports {
unsigned long cmd_addr;
struct scsi_host_template *sht;
struct ata_ioports port[ATA_MAX_PORTS];
unsigned int n_ports;
- unsigned int hard_port_no;
+ unsigned int dummy_port_mask;
unsigned int pio_mask;
unsigned int mwdma_mask;
unsigned int udma_mask;
- unsigned int legacy_mode;
unsigned long irq;
+ unsigned long irq2;
unsigned int irq_flags;
- unsigned long host_flags;
+ unsigned long port_flags;
+ unsigned long _host_flags;
void __iomem *mmio_base;
void *private_data;
+
+ /* port_info for the secondary port. Together with irq2, it's
+ * used to implement non-uniform secondary port. Currently,
+ * the only user is ata_piix combined mode. This workaround
+ * will be removed together with ata_probe_ent when init model
+ * is updated.
+ */
+ const struct ata_port_info *pinfo2;
};
-struct ata_host_set {
+struct ata_host {
spinlock_t lock;
struct device *dev;
unsigned long irq;
+ unsigned long irq2;
void __iomem *mmio_base;
unsigned int n_ports;
void *private_data;
const struct ata_port_operations *ops;
- struct ata_port * ports[0];
+ unsigned long flags;
+ int simplex_claimed; /* Keep seperate in case we
+ ever need to do this locked */
+ struct ata_port *ports[0];
};
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;
};
-struct ata_host_stats {
+struct ata_port_stats {
unsigned long unhandled_irq;
unsigned long idle_irq;
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 {
- u64 n_sectors; /* size of device, if ATA */
+ struct ata_port *ap;
+ unsigned int devno; /* 0 or 1 */
unsigned long flags; /* ATA_DFLAG_xxx */
+ struct scsi_device *sdev; /* attached SCSI device */
+ /* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */
+ u64 n_sectors; /* size of device, if ATA */
unsigned int class; /* ATA_DEV_xxx */
- unsigned int devno; /* 0 or 1 */
u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
u8 pio_mode;
u8 dma_mode;
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 int pio_mask;
+ unsigned int mwdma_mask;
+ unsigned int udma_mask;
/* for CHS addressing */
u16 cylinders; /* Number of cylinders */
u16 heads; /* Number of heads */
u16 sectors; /* Number of sectors per track */
+
+ /* error history */
+ struct ata_ering ering;
+ unsigned int horkage; /* List of broken features */
+};
+
+/* Offset into struct ata_device. Fields above it are maintained
+ * acress device init. Fields below are zeroed.
+ */
+#define ATA_DEVICE_CLEAR_OFFSET offsetof(struct ata_device, n_sectors)
+
+struct ata_eh_info {
+ struct ata_device *dev; /* offending device */
+ u32 serror; /* SError from LLDD */
+ unsigned int err_mask; /* port-wide err_mask */
+ unsigned int action; /* ATA_EH_* action mask */
+ unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */
+ unsigned int flags; /* ATA_EHI_* flags */
+
+ unsigned long hotplug_timestamp;
+ unsigned int probe_mask;
+
+ char desc[ATA_EH_DESC_LEN];
+ int desc_len;
+};
+
+struct ata_eh_context {
+ struct ata_eh_info i;
+ int tries[ATA_MAX_DEVICES];
+ unsigned int classes[ATA_MAX_DEVICES];
+ unsigned int did_probe_mask;
};
struct ata_port {
- struct Scsi_Host *host; /* our co-allocated scsi host */
+ struct Scsi_Host *scsi_host; /* our co-allocated scsi host */
const struct ata_port_operations *ops;
+ spinlock_t *lock;
unsigned long flags; /* ATA_FLAG_xxx */
+ unsigned int pflags; /* ATA_PFLAG_xxx */
unsigned int id; /* unique id req'd by scsi midlyr */
unsigned int port_no; /* unique port #; from zero */
- unsigned int hard_port_no; /* hardware port #; from zero */
struct ata_prd *prd; /* our SG list */
dma_addr_t prd_dma; /* and its DMA mapping */
unsigned int mwdma_mask;
unsigned int udma_mask;
unsigned int cbl; /* cable type; ATA_CBL_xxx */
- unsigned int cdb_len;
+ unsigned int hw_sata_spd_limit;
+ unsigned int sata_spd_limit; /* SATA PHY speed limit */
+
+ /* record runtime error info, protected by host 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;
+ struct ata_port_stats stats;
+ struct ata_host *host;
+ struct device *dev;
- struct work_struct packet_task;
+ void *port_task_data;
+ struct delayed_work port_task;
+ struct delayed_work hotplug_task;
+ struct work_struct scsi_rescan_task;
- struct work_struct pio_task;
unsigned int hsm_task_state;
- unsigned long pio_task_timeout;
+
+ u32 msg_enable;
+ struct list_head eh_done_q;
+ wait_queue_head_t eh_wait_q;
+
+ pm_message_t pm_mesg;
+ int *pm_result;
void *private_data;
+
+ u8 sector_buf[ATA_SECT_SIZE]; /* owned by EH */
};
struct ata_port_operations {
void (*set_piomode) (struct ata_port *, struct ata_device *);
void (*set_dmamode) (struct ata_port *, struct ata_device *);
+ unsigned long (*mode_filter) (const struct ata_port *, struct ata_device *, unsigned long);
void (*tf_load) (struct ata_port *ap, const struct ata_taskfile *tf);
void (*tf_read) (struct ata_port *ap, struct ata_taskfile *tf);
u8 (*check_altstatus)(struct ata_port *ap);
void (*dev_select)(struct ata_port *ap, unsigned int device);
- void (*phy_reset) (struct ata_port *ap);
+ void (*phy_reset) (struct ata_port *ap); /* obsolete */
+ int (*set_mode) (struct ata_port *ap, struct ata_device **r_failed_dev);
+
void (*post_set_mode) (struct ata_port *ap);
- int (*check_atapi_dma) (struct ata_queued_cmd *qc);
+ int (*check_atapi_dma) (struct ata_queued_cmd *qc);
void (*bmdma_setup) (struct ata_queued_cmd *qc);
void (*bmdma_start) (struct ata_queued_cmd *qc);
+ void (*data_xfer) (struct ata_device *, unsigned char *, unsigned int, int);
+
void (*qc_prep) (struct ata_queued_cmd *qc);
- int (*qc_issue) (struct ata_queued_cmd *qc);
+ unsigned int (*qc_issue) (struct ata_queued_cmd *qc);
+
+ /* 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 (*eng_timeout) (struct ata_port *ap);
+ 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 *);
+ irq_handler_t irq_handler;
void (*irq_clear) (struct ata_port *);
u32 (*scr_read) (struct ata_port *ap, unsigned int sc_reg);
void (*scr_write) (struct ata_port *ap, unsigned int sc_reg,
u32 val);
+ 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_set *host_set);
+ void (*host_stop) (struct ata_host *host);
void (*bmdma_stop) (struct ata_queued_cmd *qc);
u8 (*bmdma_status) (struct ata_port *ap);
struct ata_port_info {
struct scsi_host_template *sht;
- unsigned long host_flags;
+ unsigned long flags;
unsigned long pio_mask;
unsigned long mwdma_mask;
unsigned long udma_mask;
#define FIT(v,vmin,vmax) max_t(short,min_t(short,v,vmax),vmin)
+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 const struct ata_port_operations ata_dummy_port_ops;
+
+static inline const unsigned long *
+sata_ehc_deb_timing(struct ata_eh_context *ehc)
+{
+ if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
+ return sata_deb_timing_hotplug;
+ else
+ return sata_deb_timing_normal;
+}
+
+static inline int ata_port_is_dummy(struct ata_port *ap)
+{
+ return ap->ops == &ata_dummy_port_ops;
+}
+
extern void ata_port_probe(struct ata_port *);
extern 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 sata_phy_debounce(struct ata_port *ap, const unsigned long *param);
+extern int sata_phy_resume(struct ata_port *ap, const unsigned long *param);
+extern int ata_std_prereset(struct ata_port *ap);
+extern int ata_std_softreset(struct ata_port *ap, unsigned int *classes);
+extern int sata_port_hardreset(struct ata_port *ap,
+ const unsigned long *timing);
+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 void ata_port_disable(struct ata_port *);
extern void ata_std_ports(struct ata_ioports *ioaddr);
#ifdef CONFIG_PCI
extern int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info,
unsigned int n_ports);
extern void ata_pci_remove_one (struct pci_dev *pdev);
-extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t state);
+extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
+extern void 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);
+extern int ata_pci_clear_simplex(struct pci_dev *pdev);
#endif /* CONFIG_PCI */
extern int ata_device_add(const struct ata_probe_ent *ent);
-extern void ata_host_set_remove(struct ata_host_set *host_set);
+extern void ata_port_detach(struct ata_port *ap);
+extern void ata_host_init(struct ata_host *, struct device *,
+ unsigned long, const struct ata_port_operations *);
+extern void ata_host_remove(struct ata_host *host);
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 int ata_scsi_error(struct Scsi_Host *host);
extern int ata_scsi_release(struct Scsi_Host *host);
+extern void ata_sas_port_destroy(struct ata_port *);
+extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
+ struct ata_port_info *, struct Scsi_Host *);
+extern int ata_sas_port_init(struct ata_port *);
+extern int ata_sas_port_start(struct ata_port *ap);
+extern void ata_sas_port_stop(struct ata_port *ap);
+extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
+extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *),
+ struct ata_port *ap);
extern 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 *);
-extern int ata_device_resume(struct ata_port *, struct ata_device *);
-extern int ata_device_suspend(struct ata_port *, struct ata_device *);
+extern int ata_scsi_device_suspend(struct scsi_device *, pm_message_t mesg);
+extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
+extern void ata_host_resume(struct ata_host *host);
extern int ata_ratelimit(void);
+extern 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, work_func_t fn,
+ 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
extern void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf);
extern int ata_port_start (struct ata_port *ap);
extern void ata_port_stop (struct ata_port *ap);
-extern void ata_host_stop (struct ata_host_set *host_set);
-extern irqreturn_t ata_interrupt (int irq, void *dev_instance, struct pt_regs *regs);
+extern void ata_host_stop (struct ata_host *host);
+extern irqreturn_t ata_interrupt (int irq, void *dev_instance);
+extern void ata_mmio_data_xfer(struct ata_device *adev, unsigned char *buf,
+ unsigned int buflen, int write_data);
+extern void ata_pio_data_xfer(struct ata_device *adev, unsigned char *buf,
+ unsigned int buflen, int write_data);
+extern void ata_pio_data_xfer_noirq(struct ata_device *adev, unsigned char *buf,
+ unsigned int buflen, int write_data);
extern void ata_qc_prep(struct ata_queued_cmd *qc);
-extern int ata_qc_issue_prot(struct ata_queued_cmd *qc);
+extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);
+extern unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc);
extern void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf,
unsigned int buflen);
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_id_string(const u16 *id, unsigned char *s,
- unsigned int ofs, unsigned int len);
-extern void ata_dev_config(struct ata_port *ap, unsigned int i);
+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 long ata_device_blacklisted(const struct ata_device *dev);
extern void ata_bmdma_setup (struct ata_queued_cmd *qc);
extern void ata_bmdma_start (struct ata_queued_cmd *qc);
extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
extern u8 ata_bmdma_status(struct ata_port *ap);
extern void ata_bmdma_irq_clear(struct ata_port *ap);
+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_prereset_fn_t prereset,
+ 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 int ata_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
+ u8 status, int in_wq);
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 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 void ata_scsi_slave_destroy(struct scsi_device *sdev);
+extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
+ int queue_depth);
+extern struct ata_device *ata_dev_pair(struct ata_device *adev);
/*
* Timing helpers
unsigned long val;
};
-extern void ata_pci_host_stop (struct ata_host_set *host_set);
+extern void ata_pci_host_stop (struct ata_host *host);
extern struct ata_probe_ent *
ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port, int portmask);
extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
-
+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_prereset_fn_t prereset,
+ 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)
+
+static inline void __ata_ehi_hotplugged(struct ata_eh_info *ehi)
+{
+ if (ehi->flags & ATA_EHI_HOTPLUGGED)
+ return;
+
+ ehi->flags |= ATA_EHI_HOTPLUGGED | ATA_EHI_RESUME_LINK;
+ ehi->hotplug_timestamp = jiffies;
+
+ ehi->action |= ATA_EH_SOFTRESET;
+ ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
+}
+
+static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
+{
+ __ata_ehi_hotplugged(ehi);
+ ehi->err_mask |= AC_ERR_ATA_BUS;
+}
+
+/*
+ * qc helpers
+ */
static inline int
ata_sg_is_last(struct scatterlist *sg, struct ata_queued_cmd *qc)
{
return (tag < ATA_MAX_QUEUE) ? 1 : 0;
}
-static inline unsigned int ata_dev_present(const struct ata_device *dev)
+static inline unsigned int ata_tag_internal(unsigned int tag)
+{
+ return tag == ATA_MAX_QUEUE - 1;
+}
+
+/*
+ * device helpers
+ */
+static inline unsigned int ata_class_enabled(unsigned int class)
{
- return ((dev->class == ATA_DEV_ATA) ||
- (dev->class == ATA_DEV_ATAPI));
+ return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI;
}
+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_absent(dev->class);
+}
+
+static inline unsigned int ata_dev_ready(const struct ata_device *dev)
+{
+ return ata_dev_enabled(dev) && !(dev->flags & ATA_DFLAG_SUSPENDED);
+}
+
+/*
+ * port helpers
+ */
+static inline int ata_port_max_devices(const struct ata_port *ap)
+{
+ if (ap->flags & ATA_FLAG_SLAVE_POSS)
+ return 2;
+ return 1;
+}
+
+
static inline u8 ata_chk_status(struct ata_port *ap)
{
return ap->ops->check_status(ap);
/**
* ata_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.
udelay(10);
status = ata_chk_status(ap);
max--;
- } while ((status & bits) && (max > 0));
+ } while (status != 0xff && (status & bits) && (max > 0));
return status;
}
{
u8 status = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
- if (status & (ATA_BUSY | ATA_DRQ)) {
+ if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) {
unsigned long l = ap->ioaddr.status_addr;
- printk(KERN_WARNING
- "ATA: abnormal status 0x%X on port 0x%lX\n",
- status, l);
+ if (ata_msg_warn(ap))
+ printk(KERN_WARNING "ATA: abnormal status 0x%X on port 0x%lX\n",
+ status, l);
}
return status;
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;
static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
{
+ qc->dma_dir = DMA_NONE;
qc->__sg = NULL;
qc->flags = 0;
qc->cursect = qc->cursg = qc->cursg_ofs = 0;
qc->nsect = 0;
qc->nbytes = qc->curbytes = 0;
+ qc->n_elem = 0;
qc->err_mask = 0;
+ qc->pad_len = 0;
- ata_tf_init(qc->ap, &qc->tf, qc->dev->devno);
-}
-
-
-/**
- * ata_irq_on - Enable interrupts on a port.
- * @ap: Port on which interrupts are enabled.
- *
- * Enable interrupts on a legacy IDE device using MMIO or PIO,
- * wait for idle, clear any pending interrupts.
- *
- * LOCKING:
- * Inherited from caller.
- */
-
-static inline u8 ata_irq_on(struct ata_port *ap)
-{
- struct ata_ioports *ioaddr = &ap->ioaddr;
- u8 tmp;
-
- ap->ctl &= ~ATA_NIEN;
- ap->last_ctl = ap->ctl;
-
- if (ap->flags & ATA_FLAG_MMIO)
- writeb(ap->ctl, (void __iomem *) ioaddr->ctl_addr);
- else
- outb(ap->ctl, ioaddr->ctl_addr);
- tmp = ata_wait_idle(ap);
-
- ap->ops->irq_clear(ap);
+ ata_tf_init(qc->dev, &qc->tf);
- return tmp;
+ /* init result_tf such that it indicates normal completion */
+ qc->result_tf.command = ATA_DRDY;
+ qc->result_tf.feature = 0;
}
-
/**
* ata_irq_ack - Acknowledge a device interrupt.
* @ap: Port on which interrupts are enabled.
status = ata_busy_wait(ap, bits, 1000);
if (status & bits)
- DPRINTK("abnormal status 0x%X\n", status);
+ if (ata_msg_err(ap))
+ printk(KERN_ERR "abnormal status 0x%X\n", status);
/* get controller status; clear intr, err bits */
if (ap->flags & ATA_FLAG_MMIO) {
post_stat = inb(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
}
- VPRINTK("irq ack: host_stat 0x%X, new host_stat 0x%X, drv_stat 0x%X\n",
- host_stat, post_stat, status);
+ if (ata_msg_intr(ap))
+ printk(KERN_INFO "%s: irq ack: host_stat 0x%X, new host_stat 0x%X, drv_stat 0x%X\n",
+ __FUNCTION__,
+ host_stat, post_stat, status);
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) ||
static inline unsigned int ac_err_mask(u8 status)
{
- if (status & ATA_BUSY)
- return AC_ERR_ATA_BUS;
+ if (status & (ATA_BUSY | ATA_DRQ))
+ return AC_ERR_HSM;
if (status & (ATA_ERR | ATA_DF))
return AC_ERR_DEV;
return 0;
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__ */
git://git.onelab.eu / linux-2.6.git / blobdiff