#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>
/* note: prints function name for you */
#ifdef ATA_DEBUG
-#define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
+#define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
#ifdef ATA_VERBOSE_DEBUG
-#define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
+#define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
#else
#define VPRINTK(fmt, args...)
#endif /* ATA_VERBOSE_DEBUG */
#define VPRINTK(fmt, args...)
#endif /* ATA_DEBUG */
-#define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
+#define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args)
/* NEW: debug levels */
#define HAVE_LIBATA_MSG 1
/* 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_DFLAG_SPUNDOWN = (1 << 14), /* XXX: for spindown_compat */
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_INIT_MASK = (1 << 24) - 1,
ATA_DFLAG_DETACH = (1 << 24),
ATA_DEV_NONE = 9, /* 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 */
/* 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,
+ ATA_TMOUT_MAX_PARK = 30000,
/* 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
+ * 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 = 1000,
/* ATA bus states */
BUS_UNKNOWN = 0,
ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
ATA_EH_ENABLE_LINK = (1 << 3),
ATA_EH_LPM = (1 << 4), /* link power management action */
+ ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */
- ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE,
+ 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_LPM,
/* ata_eh_info->flags */
ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */
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_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,
+};
+#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;
struct ata_device {
struct ata_link *link;
unsigned int devno; /* 0 or 1 */
- unsigned long flags; /* ATA_DFLAG_xxx */
unsigned int horkage; /* List of broken features */
+ unsigned long flags; /* ATA_DFLAG_xxx */
struct scsi_device *sdev; /* attached SCSI device */
#ifdef CONFIG_ATA_ACPI
acpi_handle acpi_handle;
/* 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 */
-
- union {
- u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
- u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
- };
+ unsigned long unpark_deadline;
u8 pio_mode;
u8 dma_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 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
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 */
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 */
unsigned int qc_active;
int nr_active_links; /* #links with active qcs */
- struct ata_link link; /* host default link */
+ 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 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;
int *pm_result;
struct timer_list fastdrain_timer;
unsigned long fastdrain_cnt;
+ int em_message_type;
void *private_data;
#ifdef CONFIG_ATA_ACPI
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
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);
/*
* Optional features
*/
- int (*scr_read)(struct ata_port *ap, unsigned int sc_reg, u32 *val);
- int (*scr_write)(struct ata_port *ap, unsigned int sc_reg, u32 val);
+ 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 (*enable_pm)(struct ata_port *ap, enum link_pm policy);
void (*port_stop)(struct ata_port *ap);
void (*host_stop)(struct ata_host *host);
+#ifdef CONFIG_ATA_SFF
/*
* SFF / taskfile oriented ops
*/
- void (*dev_select)(struct ata_port *ap, unsigned int device);
- u8 (*check_status)(struct ata_port *ap);
- u8 (*check_altstatus)(struct ata_port *ap);
- void (*tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
- void (*tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
- void (*exec_command)(struct ata_port *ap, const struct ata_taskfile *tf);
- unsigned int (*data_xfer)(struct ata_device *dev, unsigned char *buf,
- unsigned int buflen, int rw);
- u8 (*irq_on)(struct ata_port *);
-
- void (*irq_clear)(struct ata_port *);
+ void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
+ 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);
+ u8 (*sff_irq_on)(struct ata_port *);
+ void (*sff_irq_clear)(struct ata_port *);
+
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_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);
+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_hardreset(struct ata_link *link,
- const unsigned long *timing, unsigned long deadline);
+ 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 void ata_port_disable(struct ata_port *);
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 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 int ata_link_online(struct ata_link *link);
-extern int ata_link_offline(struct ata_link *link);
+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);
#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);
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 void ata_noop_dev_select(struct ata_port *ap, unsigned int device);
extern int ata_port_start(struct ata_port *ap);
extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);
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 void ata_noop_irq_clear(struct ata_port *ap);
+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,
- void (*finish_qc)(struct ata_queued_cmd *));
+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,
void (*done)(struct scsi_cmnd *));
extern int ata_std_bios_param(struct scsi_device *sdev,
#endif
/*
- * PMP - drivers/ata/libata-pmp.c
- */
-extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
-extern int sata_pmp_std_prereset(struct ata_link *link, unsigned long deadline);
-extern int sata_pmp_std_hardreset(struct ata_link *link, unsigned int *class,
- unsigned long deadline);
-extern void sata_pmp_std_postreset(struct ata_link *link, unsigned int *class);
-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;
+extern struct device_attribute *ata_common_sdev_attrs[];
#define ATA_BASE_SHT(drv_name) \
.module = THIS_MODULE, \
.proc_name = drv_name, \
.slave_configure = ata_scsi_slave_config, \
.slave_destroy = ata_scsi_slave_destroy, \
- .bios_param = ata_std_bios_param
+ .bios_param = ata_std_bios_param, \
+ .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 int 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 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) || (link)->ap->slave_link) \
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)
return ata_tag_valid(link->active_tag) || link->sactive;
}
-static inline struct ata_link *ata_port_first_link(struct ata_port *ap)
-{
- if (ap->nr_pmp_links)
- return ap->pmp_link;
- return &ap->link;
-}
-
-static inline struct ata_link *ata_port_next_link(struct ata_link *link)
-{
- struct ata_port *ap = link->ap;
+extern struct ata_link *__ata_port_next_link(struct ata_port *ap,
+ struct ata_link *link,
+ bool dev_only);
- if (link == &ap->link) {
- if (!ap->nr_pmp_links)
- return NULL;
- return ap->pmp_link;
- }
-
- if (++link < ap->nr_pmp_links + ap->pmp_link)
- return link;
- return NULL;
-}
-
-#define __ata_port_for_each_link(lk, ap) \
- for ((lk) = &(ap)->link; (lk); (lk) = ata_port_next_link(lk))
+#define __ata_port_for_each_link(link, ap) \
+ for ((link) = __ata_port_next_link((ap), NULL, false); (link); \
+ (link) = __ata_port_next_link((ap), (link), false))
#define ata_port_for_each_link(link, ap) \
- for ((link) = ata_port_first_link(ap); (link); \
- (link) = ata_port_next_link(link))
+ for ((link) = __ata_port_next_link((ap), NULL, true); (link); \
+ (link) = __ata_port_next_link((ap), (link), true))
#define ata_link_for_each_dev(dev, link) \
for ((dev) = (link)->device; \
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_bmdma_port_ops;
.sg_tablesize = LIBATA_MAX_PRD, \
.dma_boundary = ATA_DMA_BOUNDARY
-extern void ata_qc_prep(struct ata_queued_cmd *qc);
-extern void ata_dumb_qc_prep(struct ata_queued_cmd *qc);
-extern void ata_std_dev_select(struct ata_port *ap, unsigned int device);
-extern u8 ata_check_status(struct ata_port *ap);
-extern u8 ata_altstatus(struct ata_port *ap);
-extern int ata_busy_sleep(struct ata_port *ap,
- unsigned long timeout_pat, unsigned long timeout);
-extern int ata_wait_ready(struct ata_port *ap, unsigned long deadline);
-extern void ata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
-extern void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
-extern void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf);
-extern unsigned int ata_data_xfer(struct ata_device *dev,
+extern void ata_sff_qc_prep(struct ata_queued_cmd *qc);
+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 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_data_xfer_noirq(struct ata_device *dev,
+extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev,
unsigned char *buf, unsigned int buflen, int rw);
-extern u8 ata_irq_on(struct ata_port *ap);
-extern void ata_bmdma_irq_clear(struct ata_port *ap);
-extern int ata_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
- u8 status, int in_wq);
-extern unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc);
-extern unsigned int ata_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc);
-extern irqreturn_t ata_interrupt(int irq, void *dev_instance);
-extern void ata_bmdma_freeze(struct ata_port *ap);
-extern void ata_bmdma_thaw(struct ata_port *ap);
-extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
-extern unsigned int ata_dev_try_classify(struct ata_device *dev, int present,
- u8 *r_err);
-extern void ata_wait_after_reset(struct ata_port *ap, unsigned long deadline);
-extern int ata_std_softreset(struct ata_link *link, unsigned int *classes,
+extern u8 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 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_host_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_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_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 void ata_bmdma_error_handler(struct ata_port *ap);
-extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
+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_error_handler(struct ata_port *ap);
+extern void ata_sff_post_internal_cmd(struct ata_queued_cmd *qc);
extern int ata_sff_port_start(struct ata_port *ap);
-extern void ata_std_ports(struct ata_ioports *ioaddr);
-extern unsigned long ata_pci_default_filter(struct ata_device *dev,
- unsigned long xfer_mask);
+extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
+extern unsigned long ata_bmdma_mode_filter(struct ata_device *dev,
+ unsigned long xfer_mask);
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 void ata_bus_reset(struct ata_port *ap);
#ifdef CONFIG_PCI
-extern int ata_pci_clear_simplex(struct pci_dev *pdev);
-extern int ata_pci_init_bmdma(struct ata_host *host);
-extern int ata_pci_init_sff_host(struct ata_host *host);
-extern int ata_pci_prepare_sff_host(struct pci_dev *pdev,
+extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
+extern int ata_pci_bmdma_init(struct ata_host *host);
+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_activate_sff_host(struct ata_host *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_init_one(struct pci_dev *pdev,
- const struct ata_port_info * const * ppi,
- struct scsi_host_template *sht, void *host_priv);
+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);
#endif /* CONFIG_PCI */
/**
- * ata_pause - Flush writes and pause 400 nanoseconds.
- * @ap: Port to wait for.
- *
- * LOCKING:
- * Inherited from caller.
- */
-static inline void ata_pause(struct ata_port *ap)
-{
- ata_altstatus(ap);
- ndelay(400);
-}
-
-/**
- * ata_busy_wait - Wait for a port status register
+ * 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
* LOCKING:
* Inherited from caller.
*/
-static inline u8 ata_busy_wait(struct ata_port *ap, unsigned int bits,
- unsigned int max)
+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->check_status(ap);
+ status = ap->ops->sff_check_status(ap);
max--;
} while (status != 0xff && (status & bits) && (max > 0));
*/
static inline u8 ata_wait_idle(struct ata_port *ap)
{
- u8 status = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
+ u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
#ifdef ATA_DEBUG
if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
return status;
}
+#endif /* CONFIG_ATA_SFF */
#endif /* __LINUX_LIBATA_H__ */