scsi: mpi3mr: Use firmware-provided timestamp update interval

Make driver use the timestamp update interval value provided by firmware in
the driver page 1. If firmware fails to provide non-zero value, then the
driver will fall back to the driver defined macro.

Signed-off-by: Prayas Patel <[email protected]>
Signed-off-by: Ranjan Kumar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Martin K. Petersen <[email protected]>

Author: Ranjan Kumar

drivers/scsi/mpi3mr/mpi/mpi30_cnfg.h

@@ -1327,6 +1327,7 @@ struct mpi3_driver_page0 {
 struct mpi3_driver_page1 {
 	struct mpi3_config_page_header         header;
 	__le32                             flags;
+	u8                                 time_stamp_update;
 	__le32                             reserved0c;
 	__le16                             host_diag_trace_max_size;
 	__le16                             host_diag_trace_min_size;

drivers/scsi/mpi3mr/mpi3mr.h

@@ -1090,6 +1090,7 @@ struct scmd_priv {
  * @evtack_cmds_bitmap: Event Ack bitmap
  * @delayed_evtack_cmds_list: Delayed event acknowledgment list
  * @ts_update_counter: Timestamp update counter
+ * @ts_update_interval: Timestamp update interval
  * @reset_in_progress: Reset in progress flag
  * @unrecoverable: Controller unrecoverable flag
  * @prev_reset_result: Result of previous reset
@@ -1277,7 +1278,8 @@ struct mpi3mr_ioc {
 	unsigned long *evtack_cmds_bitmap;
 	struct list_head delayed_evtack_cmds_list;
 
-	u32 ts_update_counter;
+	u16 ts_update_counter;
+	u16 ts_update_interval;
 	u8 reset_in_progress;
 	u8 unrecoverable;
 	int prev_reset_result;

drivers/scsi/mpi3mr/mpi3mr_fw.c

@@ -2694,7 +2694,7 @@ static void mpi3mr_watchdog_work(struct work_struct *work)
 		return;
 	}
 
-	if (mrioc->ts_update_counter++ >= MPI3MR_TSUPDATE_INTERVAL) {
+	if (mrioc->ts_update_counter++ >= mrioc->ts_update_interval) {
 		mrioc->ts_update_counter = 0;
 		mpi3mr_sync_timestamp(mrioc);
 	}
@@ -3867,6 +3867,29 @@ static int mpi3mr_repost_diag_bufs(struct mpi3mr_ioc *mrioc)
 	return retval;
 }
 
+/**
+ * mpi3mr_read_tsu_interval - Update time stamp interval
+ * @mrioc: Adapter instance reference
+ *
+ * Update time stamp interval if its defined in driver page 1,
+ * otherwise use default value.
+ *
+ * Return: Nothing
+ */
+static void
+mpi3mr_read_tsu_interval(struct mpi3mr_ioc *mrioc)
+{
+	struct mpi3_driver_page1 driver_pg1;
+	u16 pg_sz = sizeof(driver_pg1);
+	int retval = 0;
+
+	mrioc->ts_update_interval = MPI3MR_TSUPDATE_INTERVAL;
+
+	retval = mpi3mr_cfg_get_driver_pg1(mrioc, &driver_pg1, pg_sz);
+	if (!retval && driver_pg1.time_stamp_update)
+		mrioc->ts_update_interval = (driver_pg1.time_stamp_update * 60);
+}
+
 /**
  * mpi3mr_print_ioc_info - Display controller information
  * @mrioc: Adapter instance reference
@@ -4163,6 +4186,7 @@ int mpi3mr_init_ioc(struct mpi3mr_ioc *mrioc)
 		goto out_failed_noretry;
 	}
 
+	mpi3mr_read_tsu_interval(mrioc);
 	mpi3mr_print_ioc_info(mrioc);
 
 	if (!mrioc->cfg_page) {
@@ -4344,6 +4368,7 @@ int mpi3mr_reinit_ioc(struct mpi3mr_ioc *mrioc, u8 is_resume)
 		goto out_failed_noretry;
 	}
 
+	mpi3mr_read_tsu_interval(mrioc);
 	mpi3mr_print_ioc_info(mrioc);
 
 	if (is_resume) {