- /*
- * (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);
- }
-
- /* ALL Command Block Executions SHALL clear nIEN, unless otherwise */
- if (IDE_CONTROL_REG)
- /* clear nIEN */
- hwif->OUTB(drive->ctl, IDE_CONTROL_REG);
- SELECT_MASK(drive, 0);
-
- if (task->tf_out_flags.b.data) {
- u16 data = taskfile->data + (hobfile->data << 8);
- hwif->OUTW(data, IDE_DATA_REG);
- }
-
- /* (ks) send hob registers first */
- if (task->tf_out_flags.b.nsector_hob)
- hwif->OUTB(hobfile->sector_count, IDE_NSECTOR_REG);
- if (task->tf_out_flags.b.sector_hob)
- hwif->OUTB(hobfile->sector_number, IDE_SECTOR_REG);
- if (task->tf_out_flags.b.lcyl_hob)
- hwif->OUTB(hobfile->low_cylinder, IDE_LCYL_REG);
- if (task->tf_out_flags.b.hcyl_hob)
- hwif->OUTB(hobfile->high_cylinder, IDE_HCYL_REG);
-
- /* (ks) Send now the standard registers */
- if (task->tf_out_flags.b.error_feature)
- hwif->OUTB(taskfile->feature, IDE_FEATURE_REG);
- /* refers to number of sectors to transfer */
- if (task->tf_out_flags.b.nsector)
- hwif->OUTB(taskfile->sector_count, IDE_NSECTOR_REG);
- /* refers to sector offset or start sector */
- if (task->tf_out_flags.b.sector)
- hwif->OUTB(taskfile->sector_number, IDE_SECTOR_REG);
- if (task->tf_out_flags.b.lcyl)
- hwif->OUTB(taskfile->low_cylinder, IDE_LCYL_REG);
- if (task->tf_out_flags.b.hcyl)
- hwif->OUTB(taskfile->high_cylinder, IDE_HCYL_REG);
-
- /*
- * (ks) In the flagged taskfile approch, we will use all specified
- * registers and the register value will not be changed, except the
- * select bit (master/slave) in the drive_head register. We must make
- * sure that the desired drive is selected.
- */
- hwif->OUTB(taskfile->device_head | drive->select.all, IDE_SELECT_REG);
- switch(task->data_phase) {