kern: dms: Make DMS block size aware

In order to safely copy between disk and host memory through a
programming interface, DMS must be aware of the hardware disk block size

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 6 insertions, 1 deletions

diff --git a/src/sys/include/dms/dms.h b/src/sys/include/dms/dms.h
index fca40b4..06e78ac 100644
--- a/src/sys/include/dms/dms.h
+++ b/src/sys/include/dms/dms.h
@@ -74,14 +74,19 @@ struct dms_ops {
  *
  * @name: Name of this device
  * @ops: Operations that can be performed
- * @data: Driver specific data
+ * @data: Driver specific data  [set by driver]
+ * @bsize: Disk block size      [set by driver]
  * @id: ID of the disk
  * @link: Internal queue link
+ *
+ * XXX: The `data' and `bsize' fields must be set by
+ *      the driver
  */
 struct dms_disk {
     char name[DISKNAME_MAX];
     struct dms_ops *ops;
     void *data;
+    uint16_t bsize;
     disk_id_t id;
     TAILQ_ENTRY(dms_disk) link;
 };