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ide: add ide_tf_load() helper

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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>
This commit is contained in:
Bartlomiej Zolnierkiewicz
2008-01-25 22:17:07 +01:00
parent 2bd06b23e2
commit 9e42237f26
3 changed files with 48 additions and 44 deletions
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8
include/linux/ide.h
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@@ -1060,6 +1060,11 @@ extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
*/
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 @@ typedef struct ide_task_s {
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 @@ typedef struct ide_task_s {
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 *);