From cecf3beef0ef311b5b375b6307fd5dc3f5dc3edb Mon Sep 17 00:00:00 2001 From: Ondrej Zary Date: Sun, 3 Jan 2016 16:06:16 +1100 Subject: [PATCH] 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 Signed-off-by: Finn Thain Reviewed-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- drivers/scsi/g_NCR5380.c | 23 +++++++++++++++++++---- 1 file changed, 19 insertions(+), 4 deletions(-) diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c index ddc0a18..53e4377 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); -- 2.7.4