From: Ondrej Zary 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 Signed-off-by: Finn Thain Reviewed-by: Hannes Reinecke --- Changes to Ondrej's version: - An 'if' statement is now a 'switch' statement. - Throw an error if MMIO register locations are not known. --- drivers/scsi/g_NCR5380.c | 23 +++++++++++++++++++---- 1 file changed, 19 insertions(+), 4 deletions(-) Index: linux/drivers/scsi/g_NCR5380.c =================================================================== --- linux.orig/drivers/scsi/g_NCR5380.c 2016-01-03 16:04:51.000000000 +1100 +++ linux/drivers/scsi/g_NCR5380.c 2016-01-03 16:04:53.000000000 +1100 @@ -323,7 +323,7 @@ static int __init generic_NCR5380_detect #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 * 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); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/