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[74/71] ncr5380: Enable PDMA for NCR53C400A

Message ID 1449262922-4580-1-git-send-email-linux@rainbow-software.org (mailing list archive)
State Deferred, archived
Headers show

Commit Message

Ondrej Zary Dec. 4, 2015, 9:02 p.m. UTC
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>
---
 drivers/scsi/g_NCR5380.c |   10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

Comments

Finn Thain Dec. 6, 2015, 3:41 a.m. UTC | #1
On Fri, 4 Dec 2015, Ondrej Zary wrote:

> 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>
> ---
>  drivers/scsi/g_NCR5380.c |   10 ++++++++--
>  1 file changed, 8 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c
> index ce444da..cd483c6 100644
> --- a/drivers/scsi/g_NCR5380.c
> +++ b/drivers/scsi/g_NCR5380.c
> @@ -324,7 +324,7 @@ 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;

Nice!

>  			ports = ncr_53c400a_ports;
>  			break;
>  		case BOARD_DTC3181E:
> @@ -412,6 +412,11 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
>  			hostdata->c400_blk_cnt = 1;
>  			hostdata->c400_host_buf = 4;
>  		}
> +		if (overrides[current_override].board == BOARD_NCR53C400A) {

Please use an 'else' here. Or a switch statement.

> +			hostdata->c400_ctl_status = 9;
> +			hostdata->c400_blk_cnt = 10;
> +			hostdata->c400_host_buf = 8;
> +		}
>  #else
>  		instance->base = overrides[current_override].NCR5380_map_name;
>  		hostdata->iomem = iomem;
> @@ -425,7 +430,8 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
>  		if (NCR5380_init(instance, flags))
>  			goto out_unregister;
>  
> -		if (overrides[current_override].board == BOARD_NCR53C400)
> +		if (overrides[current_override].board == BOARD_NCR53C400 ||
> +		    overrides[current_override].board == BOARD_NCR53C400A)
>  			NCR5380_write(hostdata->c400_ctl_status, CSR_BASE);
>  
>  		NCR5380_maybe_reset_bus(instance);
>
diff mbox

Patch

diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c
index ce444da..cd483c6 100644
--- a/drivers/scsi/g_NCR5380.c
+++ b/drivers/scsi/g_NCR5380.c
@@ -324,7 +324,7 @@  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:
@@ -412,6 +412,11 @@  static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
 			hostdata->c400_blk_cnt = 1;
 			hostdata->c400_host_buf = 4;
 		}
+		if (overrides[current_override].board == BOARD_NCR53C400A) {
+			hostdata->c400_ctl_status = 9;
+			hostdata->c400_blk_cnt = 10;
+			hostdata->c400_host_buf = 8;
+		}
 #else
 		instance->base = overrides[current_override].NCR5380_map_name;
 		hostdata->iomem = iomem;
@@ -425,7 +430,8 @@  static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
 		if (NCR5380_init(instance, flags))
 			goto out_unregister;
 
-		if (overrides[current_override].board == BOARD_NCR53C400)
+		if (overrides[current_override].board == BOARD_NCR53C400 ||
+		    overrides[current_override].board == BOARD_NCR53C400A)
 			NCR5380_write(hostdata->c400_ctl_status, CSR_BASE);
 
 		NCR5380_maybe_reset_bus(instance);