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ncr5380: Use DMA hooks for PDMA

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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>
This commit is contained in:
Finn Thain
2016-03-23 21:10:17 +11:00
committed by Martin K. Petersen
parent e5d55d1abc
commit 6c4b88ca59
13 changed files with 50 additions and 41 deletions
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14
drivers/scsi/pas16.c
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@@ -458,7 +458,7 @@ static int pas16_biosparam(struct scsi_device *sdev, struct block_device *dev,
}
/*
* Function : int NCR5380_pread (struct Scsi_Host *instance,
* Function : int pas16_pread (struct Scsi_Host *instance,
* unsigned char *dst, int len)
*
* Purpose : Fast 5380 pseudo-dma read function, transfers len bytes to
@@ -470,8 +470,9 @@ static int pas16_biosparam(struct scsi_device *sdev, struct block_device *dev,
* timeout.
*/
static inline int NCR5380_pread (struct Scsi_Host *instance, unsigned char *dst,
int len) {
static inline int pas16_pread(struct Scsi_Host *instance,
unsigned char *dst, int len)
{
register unsigned char *d = dst;
register unsigned short reg = (unsigned short) (instance->io_port +
P_DATA_REG_OFFSET);
@@ -493,7 +494,7 @@ static inline int NCR5380_pread (struct Scsi_Host *instance, unsigned char *dst,
}
/*
* Function : int NCR5380_pwrite (struct Scsi_Host *instance,
* Function : int pas16_pwrite (struct Scsi_Host *instance,
* unsigned char *src, int len)
*
* Purpose : Fast 5380 pseudo-dma write function, transfers len bytes from
@@ -505,8 +506,9 @@ static inline int NCR5380_pread (struct Scsi_Host *instance, unsigned char *dst,
* timeout.
*/
static inline int NCR5380_pwrite (struct Scsi_Host *instance, unsigned char *src,
int len) {
static inline int pas16_pwrite(struct Scsi_Host *instance,
unsigned char *src, int len)
{
register unsigned char *s = src;
register unsigned short reg = (instance->io_port + P_DATA_REG_OFFSET);
register int i = len;