Lines Matching refs:drive
28 * for supplying a Promise UDMA board & WD UDMA drive for this work!
85 * @drive: the drive the interrupt is for
91 ide_startstop_t ide_dma_intr(ide_drive_t *drive)
93 ide_hwif_t *hwif = drive->hwif;
97 drive->waiting_for_dma = 0;
98 dma_stat = hwif->dma_ops->dma_end(drive);
99 ide_dma_unmap_sg(drive, cmd);
102 if (OK_STAT(stat, DRIVE_READY, drive->bad_wstat | ATA_DRQ)) {
105 ide_finish_cmd(drive, cmd, stat);
107 ide_complete_rq(drive, BLK_STS_OK,
112 drive->name, __func__, dma_stat);
114 return ide_error(drive, "dma_intr", stat);
117 int ide_dma_good_drive(ide_drive_t *drive)
119 return ide_in_drive_list(drive->id, drive_whitelist);
124 * @drive: the drive to map the DMA table for
133 static int ide_dma_map_sg(ide_drive_t *drive, struct ide_cmd *cmd)
135 ide_hwif_t *hwif = drive->hwif;
155 * @drive: The drive to unmap
164 void ide_dma_unmap_sg(ide_drive_t *drive, struct ide_cmd *cmd)
166 ide_hwif_t *hwif = drive->hwif;
175 * @drive: drive to control
180 void ide_dma_off_quietly(ide_drive_t *drive)
182 drive->dev_flags &= ~IDE_DFLAG_USING_DMA;
184 drive->hwif->dma_ops->dma_host_set(drive, 0);
190 * @drive: drive to disable DMA on
196 void ide_dma_off(ide_drive_t *drive)
198 printk(KERN_INFO "%s: DMA disabled\n", drive->name);
199 ide_dma_off_quietly(drive);
205 * @drive: drive to enable DMA on
210 void ide_dma_on(ide_drive_t *drive)
212 drive->dev_flags |= IDE_DFLAG_USING_DMA;
214 drive->hwif->dma_ops->dma_host_set(drive, 1);
217 int __ide_dma_bad_drive(ide_drive_t *drive)
219 u16 *id = drive->id;
224 drive->name, (char *)&id[ATA_ID_PROD]);
237 static unsigned int ide_get_mode_mask(ide_drive_t *drive, u8 base, u8 req_mode)
239 u16 *id = drive->id;
240 ide_hwif_t *hwif = drive->hwif;
250 mask &= port_ops->udma_filter(drive);
258 if ((mask & 0x78) && (eighty_ninty_three(drive) == 0))
273 mask &= port_ops->mdma_filter(drive);
301 * @drive: IDE device
304 * Checks the drive/host capabilities and finds the speed to use for
307 * Returns 0 if the drive/host combination is incapable of DMA transfers
311 u8 ide_find_dma_mode(ide_drive_t *drive, u8 req_mode)
313 ide_hwif_t *hwif = drive->hwif;
318 if (drive->media != ide_disk) {
326 mask = ide_get_mode_mask(drive, xfer_mode_bases[i], req_mode);
338 if (ide_dma_good_drive(drive) &&
339 drive->id[ATA_ID_EIDE_DMA_TIME] < 150)
345 printk(KERN_INFO "%s: %s mode selected\n", drive->name,
351 static int ide_tune_dma(ide_drive_t *drive)
353 ide_hwif_t *hwif = drive->hwif;
356 if (ata_id_has_dma(drive->id) == 0 ||
357 (drive->dev_flags & IDE_DFLAG_NODMA))
361 if (__ide_dma_bad_drive(drive))
365 return config_drive_for_dma(drive);
367 speed = ide_max_dma_mode(drive);
372 if (ide_set_dma_mode(drive, speed))
378 static int ide_dma_check(ide_drive_t *drive)
380 ide_hwif_t *hwif = drive->hwif;
382 if (ide_tune_dma(drive))
389 ide_set_max_pio(drive);
394 int ide_set_dma(ide_drive_t *drive)
404 ide_dma_off_quietly(drive);
406 rc = ide_dma_check(drive);
410 ide_dma_on(drive);
415 void ide_check_dma_crc(ide_drive_t *drive)
419 ide_dma_off_quietly(drive);
420 drive->crc_count = 0;
421 mode = drive->current_speed;
430 ide_set_xfer_rate(drive, mode);
431 if (drive->current_speed >= XFER_SW_DMA_0)
432 ide_dma_on(drive);
435 void ide_dma_lost_irq(ide_drive_t *drive)
437 printk(KERN_ERR "%s: DMA interrupt recovery\n", drive->name);
446 ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error)
448 ide_hwif_t *hwif = drive->hwif;
458 printk(KERN_WARNING "%s: DMA timeout error\n", drive->name);
459 drive->waiting_for_dma = 0;
460 (void)dma_ops->dma_end(drive);
461 ide_dma_unmap_sg(drive, cmd);
462 ret = ide_error(drive, "dma timeout error",
465 printk(KERN_WARNING "%s: DMA timeout retry\n", drive->name);
467 dma_ops->dma_clear(drive);
468 printk(KERN_ERR "%s: timeout waiting for DMA\n", drive->name);
469 if (dma_ops->dma_test_irq(drive) == 0) {
470 ide_dump_status(drive, "DMA timeout",
472 drive->waiting_for_dma = 0;
473 (void)dma_ops->dma_end(drive);
474 ide_dma_unmap_sg(drive, cmd);
483 drive->dev_flags |= IDE_DFLAG_DMA_PIO_RETRY;
484 drive->retry_pio++;
485 ide_dma_off_quietly(drive);
531 int ide_dma_prepare(ide_drive_t *drive, struct ide_cmd *cmd)
533 const struct ide_dma_ops *dma_ops = drive->hwif->dma_ops;
535 if ((drive->dev_flags & IDE_DFLAG_USING_DMA) == 0 ||
536 (dma_ops->dma_check && dma_ops->dma_check(drive, cmd)))
538 ide_map_sg(drive, cmd);
539 if (ide_dma_map_sg(drive, cmd) == 0)
541 if (dma_ops->dma_setup(drive, cmd))
543 drive->waiting_for_dma = 1;
546 ide_dma_unmap_sg(drive, cmd);
548 ide_map_sg(drive, cmd);