9c6b797796
Changes for modified pmap_enter() API:
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* Map the message buffer with access_type = VM_PROT_READ|VM_PROT_WRITE `just
because'.
* Map the file system buffers with access_type = VM_PROT_READ|VM_PROT_WRITE to
avoid possible problems with pagemove().
* Do not use VM_PROT_EXEC with either of the above.
* Map pages for /dev/mem with access_type = prot. Also, DO NOT use
pmap_kenter() for this, as we DO NOT want to lose modification information.
* Map pages in dumpsys() with VM_PROT_READ.
* Map pages in m68k mappedcopyin()/mappedcopyout() and writeback() with
access_type = prot.
* For now, bus_dma*(), pmap_map(), vmapbuf(), and similar functions still use
access_type = 0. This should probably be revisited.
1999-03-26 23:41:25 +00:00
d2397ac5f7
completely remove Mach VM support. all that is left is the all the
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header files as UVM still uses (most of) these.
1999-03-24 05:50:49 +00:00
2671c2fa42
Make bus_dmamap_load_uio() work, from Kevin Lahey <kml@nas.nasa.gov>.
1998-09-21 22:51:56 +00:00
e7a551d60e
Some internal cleanup; pass a tag around, not individual arguments.
1998-08-17 20:15:55 +00:00
d5df55112a
vm_offset_t -> {paddr_t,vaddr_t}, vm_size_t -> vsize_t
1998-08-14 16:50:00 +00:00
2fc1260cc0
Implement bus_dmamap_load_uio().
1998-07-17 21:09:59 +00:00
d6041754c2
Allow the DMA tag to specify a boundary contraint. If the device has a
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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
50be447da3
Sync the bus_dmamap_load back-end functions between alpha and i386. (only
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slight, unnecessary differences)
1998-06-03 04:15:05 +00:00
5d6bc16daa
more optimizations
1998-05-29 15:55:34 +00:00
164da176e8
Add boundary checks to _bus_dma_load...
1998-05-29 15:25:07 +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
6bbfd3e9ff
Use pmap_kenter_pa() in _bus_dmamem_map() if PMAP_NEW.
1998-03-17 04:59:36 +00:00
58509e699f
Add support for UVM.
1998-02-24 07:38:01 +00:00
c26f962957
Use kernel_map in bus_dmamem_{map,free}().
1998-02-11 03:08:31 +00:00
30aa56fc66
Use M_DMAMAP where appropriate.
1998-02-11 01:37:51 +00:00
b1d8bffad8
Flush the CPU write buffer in _bus_dmamap_sync().
1998-02-04 07:35:30 +00:00
8abe76d2f0
Add offset and length parameters to bus_dmamap_sync(), used for specifiying
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partial syncs of a DMA mapping.
1998-02-04 05:12:46 +00:00
99cc8482d1
Change the last argument of bus_dmamap_sync() from bus_dmasync_op_t to int,
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and allow more than one synchronization operation to be specified in
a single call. Dissallow mixing of PRE and POST operations.
1998-02-04 01:57:27 +00:00
5fd0d10994
Add dm_mapsize to bus_dmamap_t and rename BUS_DMAMEM_NOSYNC toBUS_DMA_COHERENT.
1998-02-04 00:04:25 +00:00
5ac7e550d1
Implement bus_dmamap_load_mbuf().
1998-01-27 02:35:58 +00:00
12809e3434
If mapping only one segment of DMA memory into KVA space, use K0SEG.
1998-01-19 03:12:20 +00:00
14807c2914
Use avail_start/avail_end.
1998-01-09 06:37:04 +00:00
55800b610a
Implement bus_dmamem_mmap().
1997-09-05 02:05:37 +00:00
90798596fe
Remove references to vm_pmap.
1997-09-02 20:37:23 +00:00
693b3e7262
Nuke the idea of <machine/options.h>. It completely defeats the purpose
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of fine-grain option dependencies.
1997-09-02 13:17:47 +00:00
38f15737fd
Protect access to kmem_map with splimp()/splx(). From Chuck Cranor.
1997-08-25 21:17:48 +00:00
46b89d7739
Pull thorpej-bus-dma branch into mainline.
1997-06-06 23:54:24 +00:00
mycroft