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path: root/drivers/scsi/ipr.h
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Diffstat (limited to 'drivers/scsi/ipr.h')
-rw-r--r--drivers/scsi/ipr.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h
index f7fa8cd2ecad..c9cc40e5db24 100644
--- a/drivers/scsi/ipr.h
+++ b/drivers/scsi/ipr.h
@@ -302,6 +302,10 @@ struct ipr_config_table_entry {
#define IPR_SUBTYPE_GENERIC_SCSI 1
#define IPR_SUBTYPE_VOLUME_SET 2
+#define IPR_QUEUEING_MODEL(res) ((((res)->cfgte.flags) & 0x70) >> 4)
+#define IPR_QUEUE_FROZEN_MODEL 0
+#define IPR_QUEUE_NACA_MODEL 1
+
struct ipr_res_addr res_addr;
__be32 res_handle;
__be32 reserved4[2];
@@ -1294,6 +1298,20 @@ static inline int ipr_is_gscsi(struct ipr_resource_entry *res)
}
/**
+ * ipr_is_naca_model - Determine if a resource is using NACA queueing model
+ * @res: resource entry struct
+ *
+ * Return value:
+ * 1 if NACA queueing model / 0 if not NACA queueing model
+ **/
+static inline int ipr_is_naca_model(struct ipr_resource_entry *res)
+{
+ if (ipr_is_gscsi(res) && IPR_QUEUEING_MODEL(res) == IPR_QUEUE_NACA_MODEL)
+ return 1;
+ return 0;
+}
+
+/**
* ipr_is_device - Determine if resource address is that of a device
* @res_addr: resource address struct
*