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| author | Finn Thain <fthain@telegraphics.com.au> | 2016-03-23 21:10:17 +1100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-04-11 16:57:09 -0400 |
| commit | 6c4b88ca59ba1a68f707f19dba1744ed19e89fce (patch) | |
| tree | 0eb88c5980ec178ae214c50dae3b203567665b4f /drivers/scsi/NCR5380.c | |
| parent | e5d55d1abcef09f7440e6211d5bd673baf547630 (diff) | |
| download | linux-stable-6c4b88ca59ba1a68f707f19dba1744ed19e89fce.tar.gz linux-stable-6c4b88ca59ba1a68f707f19dba1744ed19e89fce.tar.bz2 linux-stable-6c4b88ca59ba1a68f707f19dba1744ed19e89fce.zip | |
ncr5380: Use DMA hooks for PDMA
Those wrapper drivers which use DMA define the REAL_DMA macro and
those which use pseudo DMA define PSEUDO_DMA. These macros need to be
removed for a number of reasons, not least of which is to have drivers
share more code.
Redefine the PDMA send and receive hooks as DMA setup hooks, so that the
DMA code can be shared by all 5380 wrapper drivers. This will help to
reunify the forked core driver.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Michael Schmitz <schmitzmic@gmail.com>
Tested-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/NCR5380.c')
| -rw-r--r-- | drivers/scsi/NCR5380.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c index 014a01f6875f..b3e5b6b57d83 100644 --- a/drivers/scsi/NCR5380.c +++ b/drivers/scsi/NCR5380.c @@ -127,17 +127,11 @@ * specific implementation of the NCR5380 * * Either real DMA *or* pseudo DMA may be implemented - * Note that the DMA setup functions should return the number of bytes - * that they were able to program the controller for. * * NCR5380_dma_write_setup(instance, src, count) - initialize * NCR5380_dma_read_setup(instance, dst, count) - initialize * NCR5380_dma_residual(instance); - residual count * - * PSEUDO functions : - * NCR5380_pwrite(instance, src, count) - * NCR5380_pread(instance, dst, count); - * * The generic driver is initialized by calling NCR5380_init(instance), * after setting the appropriate host specific fields and ID. If the * driver wishes to autoprobe for an IRQ line, the NCR5380_probe_irq(instance, @@ -1511,7 +1505,7 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance, */ if (p & SR_IO) { - foo = NCR5380_pread(instance, d, + foo = NCR5380_dma_recv_setup(instance, d, hostdata->flags & FLAG_DMA_FIXUP ? c - 1 : c); if (!foo && (hostdata->flags & FLAG_DMA_FIXUP)) { /* @@ -1542,7 +1536,7 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance, d[c - 1] = NCR5380_read(INPUT_DATA_REG); } } else { - foo = NCR5380_pwrite(instance, d, c); + foo = NCR5380_dma_send_setup(instance, d, c); if (!foo && (hostdata->flags & FLAG_DMA_FIXUP)) { /* * Wait for the last byte to be sent. If REQ is being asserted for |