Merge branch 'reset-seq' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev

* 'reset-seq' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  [libata reset-seq] build and merge fixes
  libata: reimplement reset sequencing
  libata: improve ata_std_prereset()
  libata: improve 0xff status handling
  libata: add deadline support to prereset and reset methods

1 files changed, 15 insertions, 25 deletions

diff --git a/include/linux/libata.h b/include/linux/libata.h
index d8cfc72ea9c..7906d750aa7 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -296,18 +296,8 @@ enum {
 
 	/* 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 */
 
@@ -348,8 +338,9 @@ struct ata_queued_cmd;
 
 /* typedefs */
 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 int (*ata_prereset_fn_t)(struct ata_port *ap, unsigned long deadline);
+typedef int (*ata_reset_fn_t)(struct ata_port *ap, unsigned int *classes,
+			      unsigned long deadline);
 typedef void (*ata_postreset_fn_t)(struct ata_port *ap, unsigned int *classes);
 
 struct ata_ioports {
@@ -494,7 +485,6 @@ struct ata_eh_info {
 	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];
@@ -688,13 +678,17 @@ 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 int sata_phy_debounce(struct ata_port *ap, const unsigned long *param,
+			     unsigned long deadline);
+extern int sata_phy_resume(struct ata_port *ap, const unsigned long *param,
+			   unsigned long deadline);
+extern int ata_std_prereset(struct ata_port *ap, unsigned long deadline);
+extern int ata_std_softreset(struct ata_port *ap, unsigned int *classes,
+			     unsigned long deadline);
+extern int sata_port_hardreset(struct ata_port *ap, const unsigned long *timing,
+			       unsigned long deadline);
+extern int sata_std_hardreset(struct ata_port *ap, unsigned int *class,
+			      unsigned long deadline);
 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);
@@ -750,6 +744,7 @@ 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 int ata_wait_ready(struct ata_port *ap, unsigned long deadline);
 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,
@@ -919,12 +914,7 @@ extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
 
 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;
 }