diff options
| author | Finn Thain <fthain@telegraphics.com.au> | 2016-03-23 21:10:14 +1100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-04-11 16:57:09 -0400 |
| commit | 1bb4600245d4d40245dd505ca17528e0b9a9ba8c (patch) | |
| tree | 17e5a40c2e3e9a3ded8c5d33883ec4cacbac3af9 /drivers/scsi/NCR5380.c | |
| parent | e63449c43a58fc185ff35ace6a842817f57ec6c8 (diff) | |
| download | blackbird-obmc-linux-1bb4600245d4d40245dd505ca17528e0b9a9ba8c.tar.gz blackbird-obmc-linux-1bb4600245d4d40245dd505ca17528e0b9a9ba8c.zip | |
ncr5380: Disable the DMA errata workaround flag by default
The only chip that needs the workarounds enabled is an early NMOS
device. That means that the common case is to disable them.
Unfortunately the sense of the flag is such that it has to be set
for the common case.
Rename the flag so that zero can be used to mean "no errata workarounds
needed". This simplifies the code.
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 | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c index 826b63d1aa84..69c73c36b923 100644 --- a/drivers/scsi/NCR5380.c +++ b/drivers/scsi/NCR5380.c @@ -457,7 +457,7 @@ static void prepare_info(struct Scsi_Host *instance) instance->base, instance->irq, instance->can_queue, instance->cmd_per_lun, instance->sg_tablesize, instance->this_id, - hostdata->flags & FLAG_NO_DMA_FIXUP ? "NO_DMA_FIXUP " : "", + hostdata->flags & FLAG_DMA_FIXUP ? "DMA_FIXUP " : "", hostdata->flags & FLAG_NO_PSEUDO_DMA ? "NO_PSEUDO_DMA " : "", hostdata->flags & FLAG_TOSHIBA_DELAY ? "TOSHIBA_DELAY " : "", #ifdef AUTOPROBE_IRQ @@ -1480,11 +1480,11 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance, * before the setting of DMA mode to after transfer of the last byte. */ - if (hostdata->flags & FLAG_NO_DMA_FIXUP) + if (hostdata->flags & FLAG_DMA_FIXUP) + NCR5380_write(MODE_REG, MR_BASE | MR_DMA_MODE | MR_MONITOR_BSY); + else NCR5380_write(MODE_REG, MR_BASE | MR_DMA_MODE | MR_MONITOR_BSY | MR_ENABLE_EOP_INTR); - else - NCR5380_write(MODE_REG, MR_BASE | MR_DMA_MODE | MR_MONITOR_BSY); dprintk(NDEBUG_DMA, "scsi%d : mode reg = 0x%X\n", instance->host_no, NCR5380_read(MODE_REG)); @@ -1540,8 +1540,8 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance, if (p & SR_IO) { foo = NCR5380_pread(instance, d, - hostdata->flags & FLAG_NO_DMA_FIXUP ? c : c - 1); - if (!foo && !(hostdata->flags & FLAG_NO_DMA_FIXUP)) { + hostdata->flags & FLAG_DMA_FIXUP ? c - 1 : c); + if (!foo && (hostdata->flags & FLAG_DMA_FIXUP)) { /* * The workaround was to transfer fewer bytes than we * intended to with the pseudo-DMA read function, wait for @@ -1571,7 +1571,7 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance, } } else { foo = NCR5380_pwrite(instance, d, c); - if (!foo && !(hostdata->flags & FLAG_NO_DMA_FIXUP)) { + if (!foo && (hostdata->flags & FLAG_DMA_FIXUP)) { /* * Wait for the last byte to be sent. If REQ is being asserted for * the byte we're interested, we'll ACK it and it will go false. |
