ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task)
{
ide_hwif_t *hwif = HWIF(drive);
struct ide_taskfile *tf = &task->tf;
ide_handler_t *handler = NULL;
const struct ide_tp_ops *tp_ops = hwif->tp_ops;
const struct ide_dma_ops *dma_ops = hwif->dma_ops;
if (task->data_phase == TASKFILE_MULTI_IN ||
task->data_phase == TASKFILE_MULTI_OUT) {
if (!drive->mult_count) {
printk(KERN_ERR "%s: multimode not set!\n",
drive->name);
return ide_stopped;
}
}
if (task->tf_flags & IDE_TFLAG_FLAGGED)
task->tf_flags |= IDE_TFLAG_FLAGGED_SET_IN_FLAGS;
if ((task->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) {
ide_tf_dump(drive->name, tf);
tp_ops->set_irq(hwif, 1);
SELECT_MASK(drive, 0);
tp_ops->tf_load(drive, task);
}
switch (task->data_phase) {
case TASKFILE_MULTI_OUT:
case TASKFILE_OUT:
tp_ops->exec_command(hwif, tf->command);
ndelay(400); /* FIXME */
return pre_task_out_intr(drive, task->rq);
case TASKFILE_MULTI_IN:
case TASKFILE_IN:
handler = task_in_intr;
/* fall-through */
case TASKFILE_NO_DATA:
if (handler == NULL)
handler = task_no_data_intr;
/* WIN_{SPECIFY,RESTORE,SETMULT} use custom handlers */
if (task->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) {
switch (tf->command) {
case WIN_SPECIFY: handler = set_geometry_intr; break;
case WIN_RESTORE: handler = recal_intr; break;
case WIN_SETMULT: handler = set_multmode_intr; break;
}
}
ide_execute_command(drive, tf->command, handler,
WAIT_WORSTCASE, NULL);
return ide_started;
default:
if (drive->using_dma == 0 || dma_ops->dma_setup(drive))
return ide_stopped;
dma_ops->dma_exec_cmd(drive, tf->command);
dma_ops->dma_start(drive);
return ide_started;
}
}
ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task)
{
ide_hwif_t *hwif = drive->hwif;
struct ide_taskfile *tf = &task->tf;
ide_handler_t *handler = NULL;
const struct ide_tp_ops *tp_ops = hwif->tp_ops;
const struct ide_dma_ops *dma_ops = hwif->dma_ops;
if (task->data_phase == TASKFILE_MULTI_IN ||
task->data_phase == TASKFILE_MULTI_OUT) {
if (!drive->mult_count) {
printk(KERN_ERR "%s: multimode not set!\n",
drive->name);
return ide_stopped;
}
}
if (task->tf_flags & IDE_TFLAG_FLAGGED)
task->tf_flags |= IDE_TFLAG_FLAGGED_SET_IN_FLAGS;
memcpy(&hwif->task, task, sizeof(*task));
if ((task->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) {
ide_tf_dump(drive->name, tf);
tp_ops->set_irq(hwif, 1);
SELECT_MASK(drive, 0);
tp_ops->tf_load(drive, task);
}
switch (task->data_phase) {
case TASKFILE_MULTI_OUT:
case TASKFILE_OUT:
tp_ops->exec_command(hwif, tf->command);
ndelay(400); /* FIXME */
return pre_task_out_intr(drive, task->rq);
case TASKFILE_MULTI_IN:
case TASKFILE_IN:
handler = task_in_intr;
/* fall-through */
case TASKFILE_NO_DATA:
if (handler == NULL)
handler = task_no_data_intr;
ide_execute_command(drive, tf->command, handler,
WAIT_WORSTCASE, NULL);
return ide_started;
default:
if ((drive->dev_flags & IDE_DFLAG_USING_DMA) == 0 ||
dma_ops->dma_setup(drive))
return ide_stopped;
dma_ops->dma_exec_cmd(drive, tf->command);
dma_ops->dma_start(drive);
return ide_started;
}
}
/*
* Handler for commands without a data phase
*/
static ide_startstop_t task_no_data_intr(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
ide_task_t *task = &hwif->task;
struct ide_taskfile *tf = &task->tf;
int custom = (task->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) ? 1 : 0;
int retries = (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) ? 5 : 1;
u8 stat;
local_irq_enable_in_hardirq();
while (1) {
stat = hwif->tp_ops->read_status(hwif);
if ((stat & ATA_BUSY) == 0 || retries-- == 0)
break;
udelay(10);
};
if (!OK_STAT(stat, ATA_DRDY, BAD_STAT)) {
if (custom && tf->command == ATA_CMD_SET_MULTI) {
drive->mult_req = drive->mult_count = 0;
drive->special.b.recalibrate = 1;
(void)ide_dump_status(drive, __func__, stat);
return ide_stopped;
} else if (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) {
if ((stat & (ATA_ERR | ATA_DRQ)) == 0) {
ide_set_handler(drive, &task_no_data_intr,
WAIT_WORSTCASE, NULL);
return ide_started;
}
}
return ide_error(drive, "task_no_data_intr", stat);
/* calls ide_end_drive_cmd */
}
if (!custom)
ide_end_drive_cmd(drive, stat, ide_read_error(drive));
else if (tf->command == ATA_CMD_IDLEIMMEDIATE) {
hwif->tp_ops->tf_read(drive, task);
if (tf->lbal != 0xc4) {
printk(KERN_ERR "%s: head unload failed!\n",
drive->name);
ide_tf_dump(drive->name, tf);
} else
drive->dev_flags |= IDE_DFLAG_PARKED;
ide_end_drive_cmd(drive, stat, ide_read_error(drive));
} else if (tf->command == ATA_CMD_SET_MULTI)
drive->mult_count = drive->mult_req;
return ide_stopped;
}
void ide_pktcmd_tf_load(ide_drive_t *drive, u32 tf_flags, u16 bcount, u8 dma)
{
ide_hwif_t *hwif = drive->hwif;
ide_task_t task;
memset(&task, 0, sizeof(task));
task.tf_flags = IDE_TFLAG_OUT_LBAH | IDE_TFLAG_OUT_LBAM |
IDE_TFLAG_OUT_FEATURE | tf_flags;
task.tf.feature = dma; /* Use PIO/DMA */
task.tf.lbam = bcount & 0xff;
task.tf.lbah = (bcount >> 8) & 0xff;
ide_tf_dump(drive->name, &task.tf);
hwif->tp_ops->set_irq(hwif, 1);
SELECT_MASK(drive, 0);
hwif->tp_ops->tf_load(drive, &task);
}
void ide_complete_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 stat, u8 err)
{
const struct ide_tp_ops *tp_ops = drive->hwif->tp_ops;
struct ide_taskfile *tf = &cmd->tf;
struct request *rq = cmd->rq;
u8 tf_cmd = tf->command;
tf->error = err;
tf->status = stat;
if (cmd->ftf_flags & IDE_FTFLAG_IN_DATA) {
u8 data[2];
tp_ops->input_data(drive, cmd, data, 2);
cmd->tf.data = data[0];
cmd->hob.data = data[1];
}
ide_tf_readback(drive, cmd);
if ((cmd->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) &&
tf_cmd == ATA_CMD_IDLEIMMEDIATE) {
if (tf->lbal != 0xc4) {
printk(KERN_ERR "%s: head unload failed!\n",
drive->name);
ide_tf_dump(drive->name, cmd);
} else
drive->dev_flags |= IDE_DFLAG_PARKED;
}
if (rq && rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
struct ide_cmd *orig_cmd = rq->special;
if (cmd->tf_flags & IDE_TFLAG_DYN)
kfree(orig_cmd);
else
memcpy(orig_cmd, cmd, sizeof(*cmd));
}
}
ide_startstop_t do_rw_taskfile(ide_drive_t *drive, struct ide_cmd *orig_cmd)
{
ide_hwif_t *hwif = drive->hwif;
struct ide_cmd *cmd = &hwif->cmd;
struct ide_taskfile *tf = &cmd->tf;
ide_handler_t *handler = NULL;
const struct ide_tp_ops *tp_ops = hwif->tp_ops;
const struct ide_dma_ops *dma_ops = hwif->dma_ops;
if (orig_cmd->protocol == ATA_PROT_PIO &&
(orig_cmd->tf_flags & IDE_TFLAG_MULTI_PIO) &&
drive->mult_count == 0) {
pr_err("%s: multimode not set!\n", drive->name);
return ide_stopped;
}
if (orig_cmd->ftf_flags & IDE_FTFLAG_FLAGGED)
orig_cmd->ftf_flags |= IDE_FTFLAG_SET_IN_FLAGS;
memcpy(cmd, orig_cmd, sizeof(*cmd));
if ((cmd->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) {
ide_tf_dump(drive->name, cmd);
tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS);
if (cmd->ftf_flags & IDE_FTFLAG_OUT_DATA) {
u8 data[2] = { cmd->tf.data, cmd->hob.data };
tp_ops->output_data(drive, cmd, data, 2);
}
if (cmd->valid.out.tf & IDE_VALID_DEVICE) {
u8 HIHI = (cmd->tf_flags & IDE_TFLAG_LBA48) ?
0xE0 : 0xEF;
if (!(cmd->ftf_flags & IDE_FTFLAG_FLAGGED))
cmd->tf.device &= HIHI;
cmd->tf.device |= drive->select;
}
tp_ops->tf_load(drive, &cmd->hob, cmd->valid.out.hob);
tp_ops->tf_load(drive, &cmd->tf, cmd->valid.out.tf);
}
switch (cmd->protocol) {
case ATA_PROT_PIO:
if (cmd->tf_flags & IDE_TFLAG_WRITE) {
tp_ops->exec_command(hwif, tf->command);
ndelay(400);
return pre_task_out_intr(drive, cmd);
}
handler = task_pio_intr;
/* fall-through */
case ATA_PROT_NODATA:
if (handler == NULL)
handler = task_no_data_intr;
ide_execute_command(drive, cmd, handler, WAIT_WORSTCASE);
return ide_started;
case ATA_PROT_DMA:
if (ide_dma_prepare(drive, cmd))
return ide_stopped;
hwif->expiry = dma_ops->dma_timer_expiry;
ide_execute_command(drive, cmd, ide_dma_intr, 2 * WAIT_CMD);
dma_ops->dma_start(drive);
default:
return ide_started;
}
}
