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authorOndrej Zary <linux@rainbow-software.org>2016-01-03 08:06:16 +0300
committerMartin K. Petersen <martin.petersen@oracle.com>2016-01-07 05:43:11 +0300
commitcecf3beef0ef311b5b375b6307fd5dc3f5dc3edb (patch)
treed3ca9f51ebdc84240095838efdd554da048a3260 /drivers/scsi/g_NCR5380.c
parent12150797d064e2936154a8c01be24ce1b0115cfe (diff)
downloadlinux-cecf3beef0ef311b5b375b6307fd5dc3f5dc3edb.tar.xz
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>
Diffstat (limited to 'drivers/scsi/g_NCR5380.c')
-rw-r--r--drivers/scsi/g_NCR5380.c23
1 files changed, 19 insertions, 4 deletions
diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c
index ddc0a18974d4..53e437744c4f 100644
--- a/drivers/scsi/g_NCR5380.c
+++ b/drivers/scsi/g_NCR5380.c
@@ -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);