[PATCH] libata-hp-prep: add flags and eh_info/context fields for hotplug

Add hotplug related flags and eh_info/context fields.

Signed-off-by: Tejun Heo <htejun@gmail.com>

1 files changed, 18 insertions, 1 deletions

diff --git a/include/linux/libata.h b/include/linux/libata.h
index 2eb5828839e4..d4a668cf143b 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -131,6 +131,9 @@ enum {
 
         ATA_DFLAG_PIO           = (1 << 8), /* device currently in PIO mode */
 
+        ATA_DFLAG_DETACH        = (1 << 16),
+        ATA_DFLAG_DETACHED      = (1 << 17),
+
         ATA_DEV_UNKNOWN         = 0,    /* unknown device */
         ATA_DEV_ATA             = 1,    /* ATA device */
         ATA_DEV_ATA_UNSUP       = 2,    /* ATA device (unsupported) */
@@ -152,6 +155,9 @@ enum {
         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 */
@@ -160,6 +166,9 @@ enum {
         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) */
@@ -241,7 +250,9 @@ enum {
         ATA_EH_RESET_MASK       = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
 
         /* ata_eh_info->flags */
-        ATA_EHI_DID_RESET       = (1 << 0), /* already reset this port */
+        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,
@@ -434,6 +445,10 @@ struct ata_eh_info {
         unsigned int            err_mask;       /* port-wide err_mask */
         unsigned int            action;         /* ATA_EH_* action mask */
         unsigned int            flags;          /* ATA_EHI_* flags */
+
+        unsigned long           hotplug_timestamp;
+        unsigned int            probe_mask;
+
         char                    desc[ATA_EH_DESC_LEN];
         int                     desc_len;
 };
@@ -441,6 +456,8 @@ struct ata_eh_info {
 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 {