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Diffstat (limited to 'drivers/scsi/ufs/ufshci.h')
-rw-r--r--drivers/scsi/ufs/ufshci.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufshci.h b/drivers/scsi/ufs/ufshci.h
index 9abc7e32b43d..e1b844bc9460 100644
--- a/drivers/scsi/ufs/ufshci.h
+++ b/drivers/scsi/ufs/ufshci.h
@@ -296,6 +296,11 @@ enum {
MASK_OCS = 0x0F,
};
+/* The maximum length of the data byte count field in the PRDT is 256KB */
+#define PRDT_DATA_BYTE_COUNT_MAX (256 * 1024)
+/* The granularity of the data byte count field in the PRDT is 32-bit */
+#define PRDT_DATA_BYTE_COUNT_PAD 4
+
/**
* struct ufshcd_sg_entry - UFSHCI PRD Entry
* @base_addr: Lower 32bit physical address DW-0