[SCSI] zfcp: Add information about interrupt to trace.

[cascardo/linux.git] / drivers / s390 / scsi / zfcp_def.h

diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h
index bda8c77..fc61a8e 100644 (file)
--- a/drivers/s390/scsi/zfcp_def.h
+++ b/drivers/s390/scsi/zfcp_def.h
@@ -136,7 +136,6 @@ zfcp_address_to_sg(void *address, struct scatterlist *list, unsigned int size)
 #define ZFCP_QTCB_VERSION      FSF_QTCB_CURRENT_VERSION
 /* ATTENTION: value must not be used by hardware */
 #define FSF_QTCB_UNSOLICITED_STATUS            0x6305
-#define ZFCP_STATUS_READ_FAILED_THRESHOLD      3
 #define ZFCP_STATUS_READS_RECOM                        FSF_STATUS_READS_RECOM
 
 /* Do 1st retry in 1 second, then double the timeout for each following retry */
@@ -708,6 +707,24 @@ struct zfcp_erp_action {
        struct timer_list timer;
 };
 
+struct fsf_latency_record {
+       u32 min;
+       u32 max;
+       u64 sum;
+};
+
+struct latency_cont {
+       struct fsf_latency_record channel;
+       struct fsf_latency_record fabric;
+       u64 counter;
+};
+
+struct zfcp_latencies {
+       struct latency_cont read;
+       struct latency_cont write;
+       struct latency_cont cmd;
+       spinlock_t lock;
+};
 
 struct zfcp_adapter {
        struct list_head        list;              /* list of adapters */
@@ -723,6 +740,7 @@ struct zfcp_adapter {
        u32                     adapter_features;  /* FCP channel features */
        u32                     connection_features; /* host connection features */
         u32                    hardware_version;  /* of FCP channel */
+       u16                     timer_ticks;       /* time int for a tick */
        struct Scsi_Host        *scsi_host;        /* Pointer to mid-layer */
        struct list_head        port_list_head;    /* remote port list */
        struct list_head        port_remove_lh;    /* head of ports to be
@@ -740,7 +758,8 @@ struct zfcp_adapter {
        rwlock_t                abort_lock;        /* Protects against SCSI
                                                      stack abort/command
                                                      completion races */
-       u16                     status_read_failed; /* # failed status reads */
+       atomic_t                stat_miss;         /* # missing status reads*/
+       struct work_struct      stat_work;
        atomic_t                status;            /* status of this adapter */
        struct list_head        erp_ready_head;    /* error recovery for this
                                                      adapter/devices */
@@ -822,6 +841,7 @@ struct zfcp_unit {
         struct scsi_device     *device;        /* scsi device struct pointer */
        struct zfcp_erp_action erp_action;     /* pending error recovery */
         atomic_t               erp_counter;
+       struct zfcp_latencies   latencies;
 };
 
 /* FSF request */
@@ -831,12 +851,12 @@ struct zfcp_fsf_req {
        struct zfcp_adapter    *adapter;       /* adapter request belongs to */
        u8                     sbal_number;    /* nr of SBALs free for use */
        u8                     sbal_first;     /* first SBAL for this request */
-       u8                     sbal_last;      /* last possible SBAL for
+       u8                     sbal_last;      /* last SBAL for this request */
+       u8                     sbal_limit;      /* last possible SBAL for
                                                  this reuest */
-       u8                     sbal_curr;      /* current SBAL during creation
-                                                 of request */
        u8                     sbale_curr;     /* current SBALE during creation
                                                  of request */
+       u8                      sbal_response;  /* SBAL used in interrupt */
        wait_queue_head_t      completion_wq;  /* can be used by a routine
                                                  to wait for completion */
        volatile u32           status;         /* status of this request */