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ncr5380: Enable PDMA for NCR53C400A 

Add I/O register mapping for NCR53C400A and enable PDMA mode to
improve performance and fix non-working IRQ.

Tested with HP C2502 (and user-space enabler).

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Ondrej Zary 2016-01-03 16:06:16 +11:00 коммит произвёл Martin K. Petersen
Родитель 12150797d0
Коммит cecf3beef0
1 изменённых файлов: 19 добавлений и 4 удалений
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23
drivers/scsi/g_NCR5380.c
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@ -323,7 +323,7 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
#endif
break;
case BOARD_NCR53C400A:
flags = FLAG_NO_PSEUDO_DMA;
flags = FLAG_NO_DMA_FIXUP;
ports = ncr_53c400a_ports;
break;
case BOARD_DTC3181E:
@ -405,27 +405,42 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
* On NCR53C400 boards, NCR5380 registers are mapped 8 past
* the base address.
*/
if (overrides[current_override].board == BOARD_NCR53C400) {
switch (overrides[current_override].board) {
case BOARD_NCR53C400:
instance->io_port += 8;
hostdata->c400_ctl_status = 0;
hostdata->c400_blk_cnt = 1;
hostdata->c400_host_buf = 4;
break;
case BOARD_NCR53C400A:
hostdata->c400_ctl_status = 9;
hostdata->c400_blk_cnt = 10;
hostdata->c400_host_buf = 8;
break;
}
#else
instance->base = overrides[current_override].NCR5380_map_name;
hostdata->iomem = iomem;
if (overrides[current_override].board == BOARD_NCR53C400) {
switch (overrides[current_override].board) {
case BOARD_NCR53C400:
hostdata->c400_ctl_status = 0x100;
hostdata->c400_blk_cnt = 0x101;
hostdata->c400_host_buf = 0x104;
break;
case BOARD_NCR53C400A:
pr_err(DRV_MODULE_NAME ": unknown register offsets\n");
goto out_unregister;
}
#endif
if (NCR5380_init(instance, flags))
goto out_unregister;
if (overrides[current_override].board == BOARD_NCR53C400)
switch (overrides[current_override].board) {
case BOARD_NCR53C400:
case BOARD_NCR53C400A:
NCR5380_write(hostdata->c400_ctl_status, CSR_BASE);
}
NCR5380_maybe_reset_bus(instance);