e6ab362da0
The LCA isn't supposed to have a DMA prefetch threshold, but experience
...
has shown is that if we don't allocate a spill page, we get a machine
check. So, initialize the threshold to 256 bytes.
2001-07-19 18:47:38 +00:00
db36913c87
The code that creates/destroys SGMAP DMA maps is the same; put it
...
in a common place and share it.
2001-01-03 19:15:59 +00:00
c88e94a407
remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h>
2000-06-29 08:58:45 +00:00
d5df55112a
vm_offset_t -> {paddr_t,vaddr_t}, vm_size_t -> vsize_t
1998-08-14 16:50:00 +00:00
c0fa3c6ac4
Don't call *_dma_init() twice; there's no need to. Just do it in *attach().
1998-06-06 01:33:23 +00:00
d6041754c2
Allow the DMA tag to specify a boundary contraint. If the device has a
...
more strict boundary, the map will use it, otherwise the map will inherit
the tag's, unless the tag's constraint is 0 (no boundary constraint).
1998-06-03 18:25:53 +00:00
49aa171ab9
Add support for chaining DMA windows together, for falling back on
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SGMAPs if a direct-mapped window fails.
1998-05-13 21:21:16 +00:00
4665241bf8
Simplify the direct-mapped DMA case somewhat by adding a window base
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member to the DMA tag, and calling the direct-mapped back-ends directly,
rather than through chipset-specific front-ends which pass the window
base as an additional argument.
1998-05-07 20:09:37 +00:00
612aea038c
Use the common _bus_dmamap_sync() as the _dmamap_sync method in the
...
bus_dma_tag_t.
1998-02-04 07:37:28 +00:00
8df306036a
Initialize s/g DMA registers in the same order as the CIA chipset's:
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(1) window base
(2) window mask
(3) translation base
1998-01-17 22:46:55 +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
9554b5a243
Update for "minptalign" argument to alpha_sgmap_init().
1998-01-17 03:40:32 +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
thorpej