4ccb969d0b
Okay, handle the ALLOCNOW case by doing the appropriate adjustments
...
up front. Do the spacing arithmetic slightly differently.
1998-03-23 07:51:25 +00:00
30aa56fc66
Use M_DMAMAP where appropriate.
1998-02-11 01:37:51 +00:00
3d9cd8a05a
Extent names are const.
1998-01-21 22:34:38 +00:00
e62d894d7a
Implement a prefetch spill page for SGMAP DMA. This works around a slight
...
annoyance on systems that prefetch the next page during memory -> device
DMA if the DMA comes within a certain distance of the end of the current
page. This could cause machine checks since the PTE after the last page
would not have the valid bit set.
(I'm not going to complain about this slight kludge too much, since prefetch
makes DMA much faster...)
1998-01-18 00:05:33 +00:00
3366b987d0
Put SGMAP-related stuff in the DMA map structure directly, rather than
...
indirecting through a pointer.
1998-01-17 21:53:52 +00:00
2981fec2f0
Allow specification of a minimum page table alignment to alpha_sgmap_init().
...
This is to work around an apparent hardware bug in some 2117x chipsets
where the page table must be aligned to at least 32k.
1998-01-17 03:37:22 +00:00
693b3e7262
Nuke the idea of <machine/options.h>. It completely defeats the purpose
...
of fine-grain option dependencies.
1997-09-02 13:17:47 +00:00
46b89d7739
Pull thorpej-bus-dma branch into mainline.
1997-06-06 23:54:24 +00:00
mjacob