Hi Finn, Ondrej,
One small question:
On Fri, Dec 4, 2015 at 10:03 AM, Ondrej Zary <linux@xxxxxxxxxxxxxxxxxxxx> wrote:
Add I/O register mapping for DTC chips and enable PDMA mode.
These chips have 16-bit wide HOST BUFFER register (counter register at
offset 0x0d increments by 2 on each HOST BUFFER read).
Large PIO transfers crash at least the DTCT-436P chip (all reads result
in 0xFF) so this patch actually makes it work.
The chip also crashes when we bang the C400 host status register too
heavily after PDMA write - a small udelay is needed.
Signed-off-by: Ondrej Zary <linux@xxxxxxxxxxxxxxxxxxxx>
---
# hdparm -t --direct /dev/sdb
/dev/sdb:
Timing O_DIRECT disk reads: 4 MB in 3.78 seconds = 1.06 MB/sec
drivers/scsi/NCR5380.h | 1 +
drivers/scsi/g_NCR5380.c | 47 +++++++++++++++++++++++-----------------------
2 files changed, 25 insertions(+), 23 deletions(-)
diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c
index fae4332..04f6c29 100644
--- a/drivers/scsi/g_NCR5380.c
+++ b/drivers/scsi/g_NCR5380.c
@@ -415,7 +415,8 @@ 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) {
+ if (overrides[current_override].board == BOARD_NCR53C400A ||
+ overrides[current_override].board == BOARD_DTC3181E) {
These if statements are starting to get a bit long, would it make
sense to replace them with a flag or equivalent?
Thanks,
--
Julian Calaby
Email: julian.calaby@xxxxxxxxx
Profile: http://www.google.com/profiles/julian.calaby/
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