From a5d8421b2f03e46f02cc02066b186fdbc0f590a6 Mon Sep 17 00:00:00 2001 From: peter fuerst Date: Mon, 12 Feb 2007 15:20:15 +0100 Subject: [PATCH] [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 Signed-off-by: James Bottomley --- Reading git-format-patch failed