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ide: remove 'tf_in_flags' field from ide_task_t

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* Add IDE_TFLAG_IN_DATA taskfile flag to indicate the need of reading
  IDE_DATA_REG in ide_end_drive_cmd().

  Set the new flag in ide_taskfile_ioctl() if ->in_flags.b.data is set.

* Add IDE_TFLAG_FLAGGED_SET_IN_FLAGS taskfile flag to indicate the
  need of modifying ->in_flags in ide_taskfile_ioctl().

  Set the new flag in flagged_taskfile() and move the code modifying
  ->tf_in_flags to ide_taskfile_ioctl().

  While at it remove the bogus comment: ->tf_in_flags (except .b.data)
  have no effect on selection of registers to read.

* Remove no longer needed 'tf_in_flags' field from ide_task_t.

As the result we finally have the internals of HDIO_DRIVE_TASKFILE ioctl
separated from the core IDE code.

There should be no functionality changes caused by this patch.

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 22:17:14 +01:00
parent ac026ff254
commit 866e2ec9ce
3 changed files with 17 additions and 19 deletions
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2
drivers/ide/ide-io.c
View file

@ -340,7 +340,7 @@ void ide_end_drive_cmd (ide_drive_t *drive, u8 stat, u8 err)
if (args) {
struct ide_taskfile *tf = &args->tf;
if (args->tf_in_flags.b.data) {
if (args->tf_flags & IDE_TFLAG_IN_DATA) {
u16 data = hwif->INW(IDE_DATA_REG);
tf->data = data & 0xff;

27
drivers/ide/ide-taskfile.c
View file

@ -599,7 +599,7 @@ int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2);
memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE);
args.tf_in_flags = req_task->in_flags;
args.data_phase = req_task->data_phase;
args.tf_flags = IDE_TFLAG_OUT_DEVICE;
@ -637,6 +637,9 @@ int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
args.tf_flags |= IDE_TFLAG_OUT_HOB;
}
if (req_task->in_flags.b.data)
args.tf_flags |= IDE_TFLAG_IN_DATA;
drive->io_32bit = 0;
switch(req_task->data_phase) {
case TASKFILE_MULTI_OUT:
@ -704,7 +707,13 @@ int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2);
memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE);
req_task->in_flags = args.tf_in_flags;
if ((args.tf_flags & IDE_TFLAG_FLAGGED_SET_IN_FLAGS) &&
req_task->in_flags.all == 0) {
req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS;
if (drive->addressing == 1)
req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8);
}
if (copy_to_user(buf, req_task, tasksize)) {
err = -EFAULT;
@ -846,19 +855,7 @@ ide_startstop_t flagged_taskfile (ide_drive_t *drive, ide_task_t *task)
}
}
/*
* (ks) Check taskfile in flags.
* If set, then execute as it is defined.
* If not set, then define default settings.
* The default values are:
* read all taskfile registers (except data)
* read the hob registers (sector, nsector, lcyl, hcyl)
*/
if (task->tf_in_flags.all == 0) {
task->tf_in_flags.all = IDE_TASKFILE_STD_IN_FLAGS;
if (drive->addressing == 1)
task->tf_in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8);
}
task->tf_flags |= IDE_TFLAG_FLAGGED_SET_IN_FLAGS;
return do_rw_taskfile(drive, task);
}

5
include/linux/ide.h
View file

@ -910,6 +910,8 @@ enum {
IDE_TFLAG_OUT_LBAH,
IDE_TFLAG_OUT_DEVICE = (1 << 14),
IDE_TFLAG_WRITE = (1 << 15),
IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16),
IDE_TFLAG_IN_DATA = (1 << 17),
};
struct ide_taskfile {
@ -946,8 +948,7 @@ typedef struct ide_task_s {
struct ide_taskfile tf;
u8 tf_array[14];
};
u16 tf_flags;
ide_reg_valid_t tf_in_flags;
u32 tf_flags;
int data_phase;
ide_pre_handler_t *prehandler;
ide_handler_t *handler;