ide: add ide_tf_load() helper
Based on the earlier work by Tejun Heo.
* Add 'tf_flags' field (for taskfile flags) to ide_task_t.
* Add IDE_TFLAG_LBA48 taskfile flag for LBA48 taskfiles.
* Add IDE_TFLAG_NO_SELECT_MASK taskfile flag for __ide_do_rw_disk()
which doesn't use SELECT_MASK() (looks like a bug but it requires
some more investigation).
* Split off ide_tf_load() helper from do_rw_taskfile().
* Convert __ide_do_rw_disk() to use ide_tf_load().
There should be no functionality changes caused by this patch.
Cc: Tejun Heo <htejun@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 69b78bb..e25fd0b 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1060,6 +1060,11 @@
*/
extern int ide_wait_cmd(ide_drive_t *, u8, u8, u8, u8, u8 *);
+enum {
+ IDE_TFLAG_LBA48 = (1 << 0),
+ IDE_TFLAG_NO_SELECT_MASK = (1 << 1),
+};
+
struct ide_taskfile {
u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
@@ -1094,6 +1099,7 @@
struct ide_taskfile tf;
u8 tf_array[14];
};
+ u8 tf_flags;
ide_reg_valid_t tf_out_flags;
ide_reg_valid_t tf_in_flags;
int data_phase;
@@ -1104,6 +1110,8 @@
void *special; /* valid_t generally */
} ide_task_t;
+void ide_tf_load(ide_drive_t *, ide_task_t *);
+
extern u32 ide_read_24(ide_drive_t *);
extern void SELECT_DRIVE(ide_drive_t *);