diff options
author | peter fuerst <post@pfrst.de> | 2007-02-12 15:20:15 +0100 |
---|---|---|
committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2007-02-16 09:22:11 -0600 |
commit | a5d8421b2f03e46f02cc02066b186fdbc0f590a6 (patch) | |
tree | fe517aae7d78c85af15c3a23810044544a576e52 /kernel/auditsc.c | |
parent | 7de970e11fb832a56c897276967fb0e49f59b313 (diff) |
[SCSI] wd33c93: Fast SCSI with WD33C93B
Attached are patches, which help to utilize more of the WD33C93B SCSI
controller's capabilities.
1) Added/changed all the necessary code to enable Burst Mode DMA. Only
Single Byte DMA was used before.
2) Added/changed all the necessary code to enable Fast-10 SCSI transfers.
3) The original driver inadvertently used a transfer period of 1000-800ns
(the lowest possible transfer rate) for asynchronous data transfers,
instead of the (configurable) default period intended for this purpose,
if the target responded to a SDTR not with a Reject-message, but with
a zero-SDTR. This issue was fixed.
Moreover, in case of a Reject the driver used the default-period's
initialization-value instead of its (maybe smaller) current value. The
missing assignment was added.
4) The driver's commandline- and proc-file-interface was augmented to
handle the new options properly.
The WD33C93 manual, found at
http://www.datasheet.in/datasheet-html/W/D/3/WD33C93B_WesternDigital.pdf.html,
was very helpful.
Signed-off-by: peter fuerst <post@pfrst.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'kernel/auditsc.c')
0 files changed, 0 insertions, 0 deletions