Changeset a99cf073 in mainline for uspace/srv/bd/ata_bd/ata_bd.h

Timestamp:

2009-08-22T15:08:43Z (16 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

4ef117f8

Parents:

b94334f

Message:

Add LBA-28 addressing support.

File:

• uspace/srv/bd/ata_bd/ata_bd.h (modified) (2 diffs)

uspace/srv/bd/ata_bd/ata_bd.h

@@ -116 +116 @@
 
 enum drive_head_bits {
-        DHR_DRV         = 0x10
+        DHR_LBA         = 0x40, /**< Use LBA addressing mode */
+        DHR_DRV         = 0x10  /**< Select device 1 */
 };
 
@@ -190 +191 @@
 } identify_data_t;
 
+enum ata_caps {
+        cap_iordy       = 0x0800,
+        cap_iordy_cbd   = 0x0400,
+        cap_lba         = 0x0200,
+        cap_dma         = 0x0100
+};
+
+/** Block addressing mode. */
+enum addr_mode {
+        am_chs,
+        am_lba28
+};
+
 typedef struct {
         bool present;
-        unsigned heads;
-        unsigned cylinders;
-        unsigned sectors;
+        enum addr_mode amode;
+
+        /*
+         * Geometry. Only valid if operating in CHS mode.
+         */
+        struct {
+                unsigned heads;
+                unsigned cylinders;
+                unsigned sectors;
+        } geom;
+
         uint64_t blocks;