}
EXPORT_SYMBOL(ide_end_drive_cmd);
-static void ide_kill_rq(ide_drive_t *drive, struct request *rq)
+void ide_kill_rq(ide_drive_t *drive, struct request *rq)
{
if (rq->rq_disk) {
struct ide_driver *drv;
ide_end_request(drive, 0, 0);
}
-static ide_startstop_t ide_ata_error(ide_drive_t *drive, struct request *rq, u8 stat, u8 err)
-{
- ide_hwif_t *hwif = drive->hwif;
-
- if ((stat & ATA_BUSY) ||
- ((stat & ATA_DF) && (drive->dev_flags & IDE_DFLAG_NOWERR) == 0)) {
- /* other bits are useless when BUSY */
- rq->errors |= ERROR_RESET;
- } else if (stat & ATA_ERR) {
- /* err has different meaning on cdrom and tape */
- if (err == ATA_ABORTED) {
- if ((drive->dev_flags & IDE_DFLAG_LBA) &&
- /* some newer drives don't support ATA_CMD_INIT_DEV_PARAMS */
- hwif->tp_ops->read_status(hwif) == ATA_CMD_INIT_DEV_PARAMS)
- return ide_stopped;
- } else if ((err & BAD_CRC) == BAD_CRC) {
- /* UDMA crc error, just retry the operation */
- drive->crc_count++;
- } else if (err & (ATA_BBK | ATA_UNC)) {
- /* retries won't help these */
- rq->errors = ERROR_MAX;
- } else if (err & ATA_TRK0NF) {
- /* help it find track zero */
- rq->errors |= ERROR_RECAL;
- }
- }
-
- if ((stat & ATA_DRQ) && rq_data_dir(rq) == READ &&
- (hwif->host_flags & IDE_HFLAG_ERROR_STOPS_FIFO) == 0) {
- int nsect = drive->mult_count ? drive->mult_count : 1;
-
- ide_pad_transfer(drive, READ, nsect * SECTOR_SIZE);
- }
-
- if (rq->errors >= ERROR_MAX || blk_noretry_request(rq)) {
- ide_kill_rq(drive, rq);
- return ide_stopped;
- }
-
- if (hwif->tp_ops->read_status(hwif) & (ATA_BUSY | ATA_DRQ))
- rq->errors |= ERROR_RESET;
-
- if ((rq->errors & ERROR_RESET) == ERROR_RESET) {
- ++rq->errors;
- return ide_do_reset(drive);
- }
-
- if ((rq->errors & ERROR_RECAL) == ERROR_RECAL)
- drive->special.b.recalibrate = 1;
-
- ++rq->errors;
-
- return ide_stopped;
-}
-
-static ide_startstop_t ide_atapi_error(ide_drive_t *drive, struct request *rq, u8 stat, u8 err)
-{
- ide_hwif_t *hwif = drive->hwif;
-
- if ((stat & ATA_BUSY) ||
- ((stat & ATA_DF) && (drive->dev_flags & IDE_DFLAG_NOWERR) == 0)) {
- /* other bits are useless when BUSY */
- rq->errors |= ERROR_RESET;
- } else {
- /* add decoding error stuff */
- }
-
- if (hwif->tp_ops->read_status(hwif) & (ATA_BUSY | ATA_DRQ))
- /* force an abort */
- hwif->tp_ops->exec_command(hwif, ATA_CMD_IDLEIMMEDIATE);
-
- if (rq->errors >= ERROR_MAX) {
- ide_kill_rq(drive, rq);
- } else {
- if ((rq->errors & ERROR_RESET) == ERROR_RESET) {
- ++rq->errors;
- return ide_do_reset(drive);
- }
- ++rq->errors;
- }
-
- return ide_stopped;
-}
-
-static ide_startstop_t
-__ide_error(ide_drive_t *drive, struct request *rq, u8 stat, u8 err)
-{
- if (drive->media == ide_disk)
- return ide_ata_error(drive, rq, stat, err);
- return ide_atapi_error(drive, rq, stat, err);
-}
-
-/**
- * ide_error - handle an error on the IDE
- * @drive: drive the error occurred on
- * @msg: message to report
- * @stat: status bits
- *
- * ide_error() takes action based on the error returned by the drive.
- * For normal I/O that may well include retries. We deal with
- * both new-style (taskfile) and old style command handling here.
- * In the case of taskfile command handling there is work left to
- * do
- */
-
-ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, u8 stat)
-{
- struct request *rq;
- u8 err;
-
- err = ide_dump_status(drive, msg, stat);
-
- rq = drive->hwif->rq;
- if (rq == NULL)
- return ide_stopped;
-
- /* retry only "normal" I/O: */
- if (!blk_fs_request(rq)) {
- rq->errors = 1;
- ide_end_drive_cmd(drive, stat, err);
- return ide_stopped;
- }
-
- return __ide_error(drive, rq, stat, err);
-}
-EXPORT_SYMBOL_GPL(ide_error);
-
static void ide_tf_set_specify_cmd(ide_drive_t *drive, struct ide_taskfile *tf)
{
tf->nsect = drive->sect;
return ide_stopped;
}
-int ide_devset_execute(ide_drive_t *drive, const struct ide_devset *setting,
- int arg)
-{
- struct request_queue *q = drive->queue;
- struct request *rq;
- int ret = 0;
-
- if (!(setting->flags & DS_SYNC))
- return setting->set(drive, arg);
-
- rq = blk_get_request(q, READ, __GFP_WAIT);
- rq->cmd_type = REQ_TYPE_SPECIAL;
- rq->cmd_len = 5;
- rq->cmd[0] = REQ_DEVSET_EXEC;
- *(int *)&rq->cmd[1] = arg;
- rq->special = setting->set;
-
- if (blk_execute_rq(q, NULL, rq, 0))
- ret = rq->errors;
- blk_put_request(rq);
-
- return ret;
-}
-
-static ide_startstop_t ide_do_devset(ide_drive_t *drive, struct request *rq)
-{
- int err, (*setfunc)(ide_drive_t *, int) = rq->special;
-
- err = setfunc(drive, *(int *)&rq->cmd[1]);
- if (err)
- rq->errors = err;
- else
- err = 1;
- ide_end_request(drive, err, 0);
- return ide_stopped;
-}
-
-static ide_startstop_t ide_do_park_unpark(ide_drive_t *drive, struct request *rq)
-{
- ide_task_t task;
- struct ide_taskfile *tf = &task.tf;
-
- memset(&task, 0, sizeof(task));
- if (rq->cmd[0] == REQ_PARK_HEADS) {
- drive->sleep = *(unsigned long *)rq->special;
- drive->dev_flags |= IDE_DFLAG_SLEEPING;
- tf->command = ATA_CMD_IDLEIMMEDIATE;
- tf->feature = 0x44;
- tf->lbal = 0x4c;
- tf->lbam = 0x4e;
- tf->lbah = 0x55;
- task.tf_flags |= IDE_TFLAG_CUSTOM_HANDLER;
- } else /* cmd == REQ_UNPARK_HEADS */
- tf->command = ATA_CMD_CHK_POWER;
-
- task.tf_flags |= IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
- task.rq = rq;
- drive->hwif->data_phase = task.data_phase = TASKFILE_NO_DATA;
- return do_rw_taskfile(drive, &task);
-}
-
static ide_startstop_t ide_special_rq(ide_drive_t *drive, struct request *rq)
{
u8 cmd = rq->cmd[0];
if (host->host_flags & IDE_HFLAG_SERIALIZE) {
rc = test_and_set_bit_lock(IDE_HOST_BUSY, &host->host_busy);
if (rc == 0) {
- /* for atari only */
- ide_get_lock(ide_intr, hwif);
+ if (host->get_lock)
+ host->get_lock(ide_intr, hwif);
}
}
return rc;
static inline void ide_unlock_host(struct ide_host *host)
{
if (host->host_flags & IDE_HFLAG_SERIALIZE) {
- /* for atari only */
- ide_release_lock();
+ if (host->release_lock)
+ host->release_lock();
clear_bit_unlock(IDE_HOST_BUSY, &host->host_busy);
}
}
} else if (drive_is_ready(drive)) {
if (drive->waiting_for_dma)
hwif->dma_ops->dma_lost_irq(drive);
- (void)ide_ack_intr(hwif);
+ if (hwif->ack_intr)
+ hwif->ack_intr(hwif);
printk(KERN_WARNING "%s: lost interrupt\n",
drive->name);
startstop = handler(drive);
spin_lock_irqsave(&hwif->lock, flags);
- if (!ide_ack_intr(hwif))
+ if (hwif->ack_intr && hwif->ack_intr(hwif) == 0)
goto out;
handler = hwif->handler;