scsi: Implement get_blk() function
Add a function to obtain the block device for SCSI.
Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
Acked-by: Casey Connolly <casey.connolly@linaro.org>
diff --git a/drivers/scsi/scsi-uclass.c b/drivers/scsi/scsi-uclass.c
index 1ee8236..3eb6069 100644
--- a/drivers/scsi/scsi-uclass.c
+++ b/drivers/scsi/scsi-uclass.c
@@ -10,7 +10,9 @@
#define LOG_CATEGORY UCLASS_SCSI
+#include <blk.h>
#include <dm.h>
+#include <part.h>
#include <scsi.h>
int scsi_exec(struct udevice *dev, struct scsi_cmd *pccb)
@@ -23,6 +25,34 @@
return ops->exec(dev, pccb);
}
+int scsi_get_blk_by_uuid(const char *uuid,
+ struct blk_desc **blk_desc_ptr,
+ struct disk_partition *part_info_ptr)
+{
+ static int is_scsi_scanned;
+ struct blk_desc *blk;
+ int i, ret;
+
+ if (!is_scsi_scanned) {
+ scsi_scan(false /* no verbose */);
+ is_scsi_scanned = 1;
+ }
+
+ for (i = 0; i < blk_find_max_devnum(UCLASS_SCSI) + 1; i++) {
+ ret = blk_get_desc(UCLASS_SCSI, i, &blk);
+ if (ret)
+ continue;
+
+ ret = part_get_info_by_uuid(blk, uuid, part_info_ptr);
+ if (ret > 0) {
+ *blk_desc_ptr = blk;
+ return 0;
+ }
+ }
+
+ return -1;
+}
+
int scsi_bus_reset(struct udevice *dev)
{
struct scsi_ops *ops = scsi_get_ops(dev);