1 files changed, 45 insertions, 10 deletions

diff --git a/include/linux/libata.h b/include/linux/libata.h
index e57e5d08312d..5b247b8a6b3b 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -27,6 +27,7 @@
 #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>
@@ -115,7 +116,7 @@ enum {
         /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */
         ATA_MAX_QUEUE           = 32,
         ATA_TAG_INTERNAL        = ATA_MAX_QUEUE - 1,
-        ATA_SHORT_PAUSE         = (HZ >> 6) + 1,
+        ATA_SHORT_PAUSE         = 16,
 
         ATAPI_MAX_DRAIN         = 16 << 10,
 
@@ -168,6 +169,7 @@ enum {
         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 */
@@ -190,6 +192,10 @@ enum {
         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
@@ -234,17 +240,16 @@ enum {
         /* 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
@@ -256,14 +261,14 @@ enum {
          *
          * 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,
@@ -340,6 +345,11 @@ enum {
 
         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 */
 
@@ -441,6 +451,15 @@ enum link_pm {
         MEDIUM_POWER,
 };
 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 {
@@ -597,10 +616,14 @@ struct ata_eh_info {
 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
@@ -692,6 +715,7 @@ struct ata_port {
         struct timer_list       fastdrain_timer;
         unsigned long           fastdrain_cnt;
 
+        int                     em_message_type;
         void                    *private_data;
 
 #ifdef CONFIG_ATA_ACPI
@@ -783,6 +807,12 @@ struct ata_port_operations {
         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
          */
@@ -895,8 +925,7 @@ 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);
@@ -1389,6 +1418,12 @@ static inline int ata_check_ready(u8 status)
         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