#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>
ATA_MAX_PORTS = 8,
ATA_DEF_QUEUE = 1,
/* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */
- ATA_MAX_QUEUE = 2,
+ 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,
/* 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_CFG_MASK = (1 << 8) - 1,
ATA_DFLAG_PIO = (1 << 8), /* device currently in PIO mode */
+ 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_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_NOINTR = (1 << 13), /* FIXME: Remove this once
- * proper HSM is in place. */
- 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_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_FLUSH_PORT_TASK = (1 << 14), /* flush port task */
+
+ ATA_FLAG_EH_PENDING = (1 << 15), /* EH pending */
+ ATA_FLAG_EH_IN_PROGRESS = (1 << 16), /* EH in progress */
ATA_FLAG_FROZEN = (1 << 17), /* port is frozen */
+ ATA_FLAG_RECOVERED = (1 << 18), /* recovery action performed */
+ ATA_FLAG_LOADING = (1 << 19), /* boot/loading probe */
+ ATA_FLAG_UNLOADING = (1 << 20), /* module is unloading */
+ ATA_FLAG_SCSI_HOTPLUG = (1 << 21), /* SCSI hotplug scheduled */
ATA_FLAG_DISABLED = (1 << 22), /* port is disabled, ignore it */
ATA_FLAG_SUSPENDED = (1 << 23), /* port is suspended (power) */
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,
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_PERDEV_MASK = ATA_EH_REVALIDATE,
+
+ /* ata_eh_info->flags */
+ ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */
+
+ ATA_EHI_DID_RESET = (1 << 16), /* 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,
+
+ /* 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,
};
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 {
/* 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 *, unsigned int *);
-typedef void (*ata_postreset_fn_t)(struct ata_port *ap, unsigned int *);
+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;
unsigned long flags;
int simplex_claimed; /* Keep seperate in case we
ever need to do this locked */
- struct ata_port * ports[0];
+ struct ata_host_set *next; /* for legacy mode */
+ struct ata_port *ports[0];
};
struct ata_queued_cmd {
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 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;
u16 cylinders; /* Number of cylinders */
u16 heads; /* Number of heads */
u16 sectors; /* Number of sectors per track */
+
+ /* error history */
+ struct ata_ering ering;
+};
+
+/* 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 */
const struct ata_port_operations *ops;
+ spinlock_t *lock;
unsigned long flags; /* ATA_FLAG_xxx */
unsigned int id; /* unique id req'd by scsi midlyr */
unsigned int port_no; /* unique port #; from zero */
unsigned int mwdma_mask;
unsigned int udma_mask;
unsigned int cbl; /* cable type; ATA_CBL_xxx */
+ unsigned int hw_sata_spd_limit;
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;
struct device *dev;
struct work_struct port_task;
+ struct work_struct hotplug_task;
+ struct work_struct scsi_rescan_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;
void *private_data;
void (*phy_reset) (struct ata_port *ap); /* obsolete */
void (*set_mode) (struct ata_port *ap);
- int (*probe_reset) (struct ata_port *ap, unsigned int *classes);
void (*post_set_mode) (struct ata_port *ap);
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);
unsigned int (*qc_issue) (struct ata_queued_cmd *qc);
#define FIT(v,vmin,vmax) max_t(short,min_t(short,v,vmax),vmin)
+extern const unsigned long sata_deb_timing_boot[];
+extern const unsigned long sata_deb_timing_eh[];
+extern const unsigned long sata_deb_timing_before_fsrst[];
+
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 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_std_hardreset(struct ata_port *ap, unsigned int *class);
extern void ata_std_postreset(struct ata_port *ap, unsigned int *classes);
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_port_detach(struct ata_port *ap);
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 u8 ata_check_status(struct ata_port *ap);
extern u8 ata_altstatus(struct ata_port *ap);
extern void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf);
-extern int ata_std_probe_reset(struct ata_port *ap, unsigned int *classes);
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_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 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_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 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);
/*
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_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;
+ ehi->hotplug_timestamp = jiffies;
+
+ ehi->err_mask |= AC_ERR_ATA_BUS;
+ ehi->action |= ATA_EH_SOFTRESET;
+ ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
+}
+
/*
* qc helpers
*/
return tag == ATA_MAX_QUEUE - 1;
}
+/*
+ * device helpers
+ */
static inline unsigned int ata_class_enabled(unsigned int class)
{
return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI;
return ata_class_absent(dev->class);
}
+/*
+ * 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);
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;
git.openpandora.org / pandora-kernel.git / blobdiff