ide: switch ide_cmd_ioctl() to use REQ_TYPE_ATA_TASKFILE requests

Based on the earlier work by Tejun Heo.

There should be no functionality changes caused by this patch.

Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
index a26c9ca784a6321f431dcd8c25512fb3c8d445d7..e2a7e95e1636ccfc326748f5fa32a27132f2341d 100644 (file)
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -619,7 +619,7 @@ no_80w:
 int ide_ata66_check (ide_drive_t *drive, ide_task_t *args)
 {
        if (args->tf.command == WIN_SETFEATURES &&
-           args->tf.lbal > XFER_UDMA_2 &&
+           args->tf.nsect > XFER_UDMA_2 &&
            args->tf.feature == SETFEATURES_XFER) {
                if (eighty_ninty_three(drive) == 0) {
                        printk(KERN_WARNING "%s: UDMA speeds >UDMA33 cannot "
@@ -639,7 +639,7 @@ int ide_ata66_check (ide_drive_t *drive, ide_task_t *args)
 int set_transfer (ide_drive_t *drive, ide_task_t *args)
 {
        if (args->tf.command == WIN_SETFEATURES &&
-           args->tf.lbal >= XFER_SW_DMA_0 &&
+           args->tf.nsect >= XFER_SW_DMA_0 &&
            args->tf.feature == SETFEATURES_XFER &&
            (drive->id->dma_ultra ||
             drive->id->dma_mword ||

diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index a1796cf5835c1cfc65c2332af8ad6c0c43f1ae87..5eb6fa15dc4df6d65c5408869b6e22027d049085 100644 (file)
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -750,31 +750,11 @@ abort:
 }
 #endif
 
-static int ide_wait_cmd(ide_drive_t *drive, u8 cmd, u8 nsect, u8 feature,
-                       u8 sectors, u8 *buf)
-{
-       struct request rq;
-       u8 buffer[4];
-
-       if (!buf)
-               buf = buffer;
-       memset(buf, 0, 4 + SECTOR_WORDS * 4 * sectors);
-       ide_init_drive_cmd(&rq);
-       rq.cmd_type = REQ_TYPE_ATA_CMD;
-       rq.buffer = buf;
-       *buf++ = cmd;
-       *buf++ = nsect;
-       *buf++ = feature;
-       *buf++ = sectors;
-       return ide_do_drive_cmd(drive, &rq, ide_wait);
-}
-
 int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
 {
-       int err = 0;
-       u8 args[4], *argbuf = args;
-       u8 xfer_rate = 0;
-       int argsize = 4;
+       u8 *buf = NULL;
+       int bufsize = 0, err = 0;
+       u8 args[4], xfer_rate = 0;
        ide_task_t tfargs;
        struct ide_taskfile *tf = &tfargs.tf;
 
@@ -792,23 +772,39 @@ int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
 
        memset(&tfargs, 0, sizeof(ide_task_t));
        tf->feature = args[2];
-       tf->nsect   = args[3];
-       tf->lbal    = args[1];
+       if (args[0] == WIN_SMART) {
+               tf->nsect = args[3];
+               tf->lbal  = args[1];
+               tf->lbam  = 0x4f;
+               tf->lbah  = 0xc2;
+               tfargs.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_IN_NSECT;
+       } else {
+               tf->nsect = args[1];
+               tfargs.tf_flags = IDE_TFLAG_OUT_FEATURE |
+                                 IDE_TFLAG_OUT_NSECT | IDE_TFLAG_IN_NSECT;
+       }
        tf->command = args[0];
+       tfargs.data_phase = args[3] ? TASKFILE_IN : TASKFILE_NO_DATA;
 
        if (args[3]) {
-               argsize = 4 + (SECTOR_WORDS * 4 * args[3]);
-               argbuf = kzalloc(argsize, GFP_KERNEL);
-               if (argbuf == NULL)
+               tfargs.tf_flags |= IDE_TFLAG_IO_16BIT;
+               bufsize = SECTOR_WORDS * 4 * args[3];
+               buf = kzalloc(bufsize, GFP_KERNEL);
+               if (buf == NULL)
                        return -ENOMEM;
        }
+
        if (set_transfer(drive, &tfargs)) {
                xfer_rate = args[1];
                if (ide_ata66_check(drive, &tfargs))
                        goto abort;
        }
 
-       err = ide_wait_cmd(drive, args[0], args[1], args[2], args[3], argbuf);
+       err = ide_raw_taskfile(drive, &tfargs, buf, args[3]);
+
+       args[0] = tf->status;
+       args[1] = tf->error;
+       args[2] = tf->nsect;
 
        if (!err && xfer_rate) {
                /* active-retuning-calls future */
@@ -816,10 +812,13 @@ int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
                ide_driveid_update(drive);
        }
 abort:
-       if (copy_to_user((void __user *)arg, argbuf, argsize))
+       if (copy_to_user((void __user *)arg, &args, 4))
                err = -EFAULT;
-       if (argsize > 4)
-               kfree(argbuf);
+       if (buf) {
+               if (copy_to_user((void __user *)(arg + 4), buf, bufsize))
+                       err = -EFAULT;
+               kfree(buf);
+       }
        return err;
 }