#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>
/* various global constants */
LIBATA_MAX_PRD = ATA_MAX_PRD / 2,
LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */
- ATA_MAX_PORTS = 8,
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_MAX_BUS = 2,
- ATA_DEF_BUSY_WAIT = 10000,
- ATA_SHORT_PAUSE = (HZ >> 6) + 1,
+ ATA_SHORT_PAUSE = 16,
ATAPI_MAX_DRAIN = 16 << 10,
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 */
/* struct ata_port flags */
ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */
ATA_FLAG_AN = (1 << 18), /* controller supports AN */
ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */
ATA_FLAG_IPM = (1 << 20), /* driver can handle IPM */
+ ATA_FLAG_EM = (1 << 21), /* driver supports enclosure
+ * management */
+ ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity
+ * led */
/* The following flag belongs to ap->pflags but is kept in
* ap->flags because it's referenced in many LLDs and will be
/* bits 24:31 of host->flags are reserved for LLD specific flags */
/* various lengths of time */
- ATA_TMOUT_BOOT = 30 * HZ, /* heuristic */
- ATA_TMOUT_BOOT_QUICK = 7 * HZ, /* heuristic */
- ATA_TMOUT_INTERNAL = 30 * HZ,
- ATA_TMOUT_INTERNAL_QUICK = 5 * HZ,
+ ATA_TMOUT_BOOT = 30000, /* heuristic */
+ ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */
+ ATA_TMOUT_INTERNAL_QUICK = 5000,
/* FIXME: GoVault needs 2s but we can't afford that without
* parallel probing. 800ms is enough for iVDR disk
* HHD424020F7SV00. Increase to 2secs when parallel probing
* is in place.
*/
- ATA_TMOUT_FF_WAIT = 4 * HZ / 5,
+ ATA_TMOUT_FF_WAIT = 800,
/* Spec mandates to wait for ">= 2ms" before checking status
* after reset. We wait 150ms, because that was the magic
*
* Old drivers/ide uses the 2mS rule and then waits for ready.
*/
- ATA_WAIT_AFTER_RESET_MSECS = 150,
+ 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 = 1 * HZ,
+ ATA_TMOUT_PMP_SRST_WAIT = 1000,
/* ATA bus states */
BUS_UNKNOWN = 0,
ATA_EH_PMP_TRIES = 5,
ATA_EH_PMP_LINK_TRIES = 3,
- SATA_PMP_SCR_TIMEOUT = 250,
+ 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 = 5,
/* Horkage types. May be set by libata or controller on drives
(some horkage may be drive/controller pair dependant */
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_SKIP_PM = (1 << 5), /* Skip PM operations */
+ ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */
ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */
ATA_HORKAGE_IPM = (1 << 7), /* Link PM problems */
ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */
MAX_PERFORMANCE,
MEDIUM_POWER,
};
-extern struct class_device_attribute class_device_attr_link_power_management_policy;
+extern struct device_attribute dev_attr_link_power_management_policy;
+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,
+};
+#ifdef CONFIG_ATA_SFF
struct ata_ioports {
void __iomem *cmd_addr;
void __iomem *data_addr;
void __iomem *bmdma_addr;
void __iomem *scr_addr;
};
+#endif /* CONFIG_ATA_SFF */
struct ata_host {
spinlock_t lock;
u64 n_sectors; /* size of device, if ATA */
unsigned int class; /* ATA_DEV_xxx */
- union {
- u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
- u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
- };
-
u8 pio_mode;
u8 dma_mode;
u8 xfer_mode;
u16 sectors; /* Number of sectors per track */
/* error history */
- struct ata_ering ering;
int spdn_cnt;
+ struct ata_ering ering;
+
+ union {
+ u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
+ u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
+ };
};
/* Offset into struct ata_device. Fields above it are maintained
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 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
struct ata_prd *prd; /* our SG list */
dma_addr_t prd_dma; /* and its DMA mapping */
+#ifdef CONFIG_ATA_SFF
struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */
+#endif /* CONFIG_ATA_SFF */
u8 ctl; /* cache of ATA control register */
u8 last_ctl; /* Cache last written value */
struct timer_list fastdrain_timer;
unsigned long fastdrain_cnt;
+ int em_message_type;
void *private_data;
#ifdef CONFIG_ATA_ACPI
void (*port_stop)(struct ata_port *ap);
void (*host_stop)(struct ata_host *host);
+#ifdef CONFIG_ATA_SFF
/*
* SFF / taskfile oriented ops
*/
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_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);
/*
* Obsolete
*/
unsigned short udma; /* t2CYCTYP/2 */
};
-#define FIT(v, vmin, vmax) max_t(short, min_t(short, v, vmax), vmin)
-
/*
* Core layer - drivers/ata/libata-core.c
*/
return ap->ops == &ata_dummy_port_ops;
}
-extern void sata_print_link_status(struct ata_link *link);
extern void ata_port_probe(struct ata_port *);
extern int sata_set_spd(struct ata_link *link);
extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
#endif
extern int ata_ratelimit(void);
extern u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val,
- unsigned long interval_msec,
- unsigned long timeout_msec);
+ 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);
#endif
/*
- * PMP - drivers/ata/libata-pmp.c
- */
-extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
-extern void sata_pmp_error_handler(struct ata_port *ap);
-
-/*
* EH - drivers/ata/libata-eh.c
*/
extern void ata_port_schedule_eh(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,
*/
extern const struct ata_port_operations ata_base_port_ops;
extern const struct ata_port_operations sata_port_ops;
-extern const struct ata_port_operations sata_pmp_port_ops;
#define ATA_BASE_SHT(drv_name) \
.module = THIS_MODULE, \
.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 int ata_is_host_link(const struct ata_link *link)
+{
+ return link == &link->ap->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 int 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
*/
#define ata_port_printk(ap, lv, fmt, args...) \
printk("%sata%u: "fmt, lv, (ap)->print_id , ##args)
#define ata_link_printk(link, lv, fmt, args...) do { \
- if ((link)->ap->nr_pmp_links) \
+ if (sata_pmp_attached((link)->ap)) \
printk("%sata%u.%02u: "fmt, lv, (link)->ap->print_id, \
(link)->pmp , ##args); \
else \
/*
* link helpers
*/
-static inline int ata_is_host_link(const struct ata_link *link)
-{
- return link == &link->ap->link;
-}
-
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)
static inline struct ata_link *ata_port_first_link(struct ata_port *ap)
{
- if (ap->nr_pmp_links)
+ if (sata_pmp_attached(ap))
return ap->pmp_link;
return &ap->link;
}
{
struct ata_port *ap = link->ap;
- if (link == &ap->link) {
- if (!ap->nr_pmp_links)
+ if (ata_is_host_link(link)) {
+ if (!sata_pmp_attached(ap))
return NULL;
return ap->pmp_link;
}
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);
+}
+
+
+/**************************************************************************
+ * 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_bmdma_port_ops;
extern void ata_sff_dumb_qc_prep(struct ata_queued_cmd *qc);
extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
extern u8 ata_sff_check_status(struct ata_port *ap);
-extern u8 ata_sff_altstatus(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);
#endif /* CONFIG_PCI */
/**
- * ata_sff_pause - Flush writes and pause 400 nanoseconds.
- * @ap: Port to wait for.
- *
- * LOCKING:
- * Inherited from caller.
- */
-static inline void ata_sff_pause(struct ata_port *ap)
-{
- ata_sff_altstatus(ap);
- ndelay(400);
-}
-
-/**
* ata_sff_busy_wait - Wait for a port status register
* @ap: Port to wait for.
* @bits: bits that must be clear
return status;
}
+#endif /* CONFIG_ATA_SFF */
#endif /* __LINUX_LIBATA_H__ */
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