X-Git-Url: http://git.cascardo.info/?a=blobdiff_plain;f=drivers%2Fscsi%2Fsd.h;h=f703f4827b6f290c6272c5e4b6474a73a4f66b0a;hb=532bfc851a7475fb6a36c1e953aa395798a7cca7;hp=4163f2910e3de300ca7d2c37a2ef38fc65d59206;hpb=e583685e998e52ebbf31fadf7d8470ae69951660;p=cascardo%2Flinux.git

diff --git a/drivers/scsi/sd.h b/drivers/scsi/sd.h
index 4163f2910e3d..f703f4827b6f 100644
--- a/drivers/scsi/sd.h
+++ b/drivers/scsi/sd.h
@@ -20,6 +20,7 @@
  */
 #define SD_MAX_RETRIES		5
 #define SD_PASSTHROUGH_RETRIES	1
+#define SD_MAX_MEDIUM_TIMEOUTS	2
 
 /*
  * Size of the initial data buffer for mode and read capacity data
@@ -59,6 +60,8 @@ struct scsi_disk {
 	u32		unmap_alignment;
 	u32		index;
 	unsigned int	physical_block_size;
+	unsigned int	max_medium_access_timeouts;
+	unsigned int	medium_access_timed_out;
 	u8		media_present;
 	u8		write_prot;
 	u8		protection_type;/* Data Integrity Field */
@@ -88,6 +91,38 @@ static inline struct scsi_disk *scsi_disk(struct gendisk *disk)
 		    (sdsk)->disk->disk_name, ##a) :			\
 	sdev_printk(prefix, (sdsk)->device, fmt, ##a)
 
+static inline int scsi_medium_access_command(struct scsi_cmnd *scmd)
+{
+	switch (scmd->cmnd[0]) {
+	case READ_6:
+	case READ_10:
+	case READ_12:
+	case READ_16:
+	case SYNCHRONIZE_CACHE:
+	case VERIFY:
+	case VERIFY_12:
+	case VERIFY_16:
+	case WRITE_6:
+	case WRITE_10:
+	case WRITE_12:
+	case WRITE_16:
+	case WRITE_SAME:
+	case WRITE_SAME_16:
+	case UNMAP:
+		return 1;
+	case VARIABLE_LENGTH_CMD:
+		switch (scmd->cmnd[9]) {
+		case READ_32:
+		case VERIFY_32:
+		case WRITE_32:
+		case WRITE_SAME_32:
+			return 1;
+		}
+	}
+
+	return 0;
+}
+
 /*
  * A DIF-capable target device can be formatted with different
  * protection schemes.  Currently 0 through 3 are defined: