Peter Wemm 28c412b0e9 malloc() the rx and tx descriptors seperately rather than as part of the ... large (over 4KB) softc struct. The descriptor array is accessed by busmaster dma and must be physically contiguous in memory. malloc() of a block greater than a page is only virtually contiguous, and not necessarily physically contigious. contigmalloc() could do this, but that is a bit on the overkill side. I'm not sure of the origins of the problem report and diagnosis, I learned of the problem via mail forwarded from Jim Shankland <jas@flyingfox.com>. Jim said that Matt Thomas's workaround was to reduce the number of transmit descriptors from 128 to 32, but I was concerned that it might cost performance. Anyway, this change is my fault, not Jim's. :-) Reviewed by: davidg		1997-09-11 15:27:35 +00:00
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dc21040reg.h	Import Matt's if_de driver 970703 release. This (apparently) supports	1997-08-03 12:17:39 +00:00
if_de.c	malloc() the rx and tx descriptors seperately rather than as part of the	1997-09-11 15:27:35 +00:00
if_devar.h	malloc() the rx and tx descriptors seperately rather than as part of the	1997-09-11 15:27:35 +00:00