Commit Graph

77 Commits

Author SHA1 Message Date
simonb 9ff7681a33 Don't need to include <sys/conf.h> here. 2000-03-29 03:43:31 +00:00
thorpej ac93a75106 Point back to the alpha_shared_intr in the intrhand structure. This
allows platform-specific code to access the `intr_private' data via
the intrhand structure.
2000-03-19 01:46:18 +00:00
mjacob 13e13336b2 Allow (re)setting of maxstrays after establishment of a shared interrupt.
This allows sporadic stray interrupt counts to be reset by an acknowledgement
of the same interrupt.
2000-02-10 07:45:02 +00:00
thorpej 0c4f8a876b Implement an internal DMA map flag which prevents coalescing of
adjacent DMA segments.
2000-02-06 01:23:30 +00:00
mjacob d166ec2056 Do not forget to init intr_private 2000-02-01 04:14:18 +00:00
mjacob e1598bac13 fix misspelling 2000-01-20 17:16:25 +00:00
thorpej 8b34a5b689 Revert previous. 1999-12-08 23:54:55 +00:00
thorpej fd6f6e85b2 Slight changes so that bounce buffers can be implemented for the Jensen. 1999-12-08 23:40:35 +00:00
thorpej 25a665e643 Avoid a spurious warning when establishing a pulsed interrupt handler
on an IRQ which was marked "initially-pulsed".
1999-12-07 21:36:16 +00:00
thorpej 7f1ccd57ea Add a way to get/set a private pointer in the shared interrupt header. 1999-11-29 19:59:19 +00:00
thorpej abff7cb610 Update for pmap_enter() API change. 1999-11-13 00:27:21 +00:00
thorpej 11cae42531 Centralize the declaration and clearing of `cold'. 1999-09-17 19:59:35 +00:00
chs f3a668ed84 eliminate the PMAP_NEW option by making it required for all ports.
ports which previously had no support for PMAP_NEW now implement
the pmap_k* interfaces as wrappers around the non-k versions.
1999-09-12 01:16:55 +00:00
thorpej 3ebbe095e0 Change the pmap_extract() interface to:
boolean_t pmap_extract(pmap_t, vaddr_t, paddr_t *);
This makes it possible for the pmap to map physical address 0.
1999-07-08 18:05:21 +00:00
thorpej 5832084eaf bus_dmamem_map() maps DMA safe memory, which is usually one or more
managed pages, into KVA space.  Since the pages are managed, we should
use pmap_enter(), not pmap_kenter_pa().

Also, when entering the mappings, enter with an access_type of
VM_PROT_READ | VM_PROT_WRITE.  We do this for a couple of reasons:

	(1) On systems that have H/W mod/ref attributes, the hardware
	    may not be able to track mod/ref done by a bus master.

	(2) On systems that have to do mod/ref emulation, this prevents
	    a mod/ref page fault from potentially happening while in an
	    interrupt context, which can be problematic.

This latter change is fairly important if we ever want to be able to
transfer DMA-safe memory pages to anonymous memory objects; we will need
to know that the pages are modified, or else data could be lost!

Note that while the pages are unowned (i.e. "just DMA-safe memory pages"),
they won't consume any swap resources, as the mappings are wired, and
the pages aren't on the active or inactive queues.
1999-05-25 23:14:03 +00:00
mycroft 9c6b797796 Changes for modified pmap_enter() API:
* 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
mrg d2397ac5f7 completely remove Mach VM support. all that is left is the all the
header files as UVM still uses (most of) these.
1999-03-24 05:50:49 +00:00
mycroft 579eeb8cf7 If we have to increase the boundary due to the spill pages, use the old
boundary as an alignment.  Otherwise we fail to enforce the old boundary,
causing massive lossage.
1999-02-18 08:55:16 +00:00
thorpej 02d221f94a Fix printf format problems on Alpha. 1999-02-12 06:25:13 +00:00
thorpej 2671c2fa42 Make bus_dmamap_load_uio() work, from Kevin Lahey <kml@nas.nasa.gov>. 1998-09-21 22:51:56 +00:00
thorpej e7a551d60e Some internal cleanup; pass a tag around, not individual arguments. 1998-08-17 20:15:55 +00:00
thorpej d5df55112a vm_offset_t -> {paddr_t,vaddr_t}, vm_size_t -> vsize_t 1998-08-14 16:50:00 +00:00
thorpej 528dab6808 Implement alpha_shared_intr_disestablish(). Simply removes the handler
fromthe list, allowing the caller to manipulate the sharing type,
if appropriate.
1998-08-01 18:52:36 +00:00
thorpej 2fc1260cc0 Implement bus_dmamap_load_uio(). 1998-07-17 21:09:59 +00:00
mjacob 9c326571d3 add a common logout printing routine file 1998-07-08 00:34:49 +00:00
thorpej c7f8d02b23 Always count the number of strays we encounter, but don't send a "stopped
logging" message if we're ignoring strays.
1998-07-07 22:06:29 +00:00
jonathan 466e784ee1 defopt DDB. 1998-07-04 22:18:13 +00:00
ross d273e10d2d Protect against multiple inclusion. 1998-06-24 01:04:26 +00:00
thorpej d08070a693 Add a comment describing the locking needs of the alpha_sgmap. 1998-06-06 20:12:28 +00:00
thorpej 59d76407b4 Display information about which sgmap we're attempting to initialize
if we die in alpha_sgmap_init().
1998-06-06 01:31:46 +00:00
thorpej a51d42503c Export the spill page PTE, and provide a hook to initialize it early. 1998-06-04 01:22:52 +00:00
thorpej 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
thorpej 50be447da3 Sync the bus_dmamap_load back-end functions between alpha and i386. (only
slight, unnecessary differences)
1998-06-03 04:15:05 +00:00
matt 5d6bc16daa more optimizations 1998-05-29 15:55:34 +00:00
matt 164da176e8 Add boundary checks to _bus_dma_load... 1998-05-29 15:25:07 +00:00
thorpej 49aa171ab9 Add support for chaining DMA windows together, for falling back on
SGMAPs if a direct-mapped window fails.
1998-05-13 21:21:16 +00:00
thorpej 4665241bf8 Simplify the direct-mapped DMA case somewhat by adding a window base
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
drochner 660e718e2e Drivers for PC-like console devices are MI now. 1998-04-24 20:05:54 +00:00
mjacob 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
thorpej 6bbfd3e9ff Use pmap_kenter_pa() in _bus_dmamem_map() if PMAP_NEW. 1998-03-17 04:59:36 +00:00
thorpej 58509e699f Add support for UVM. 1998-02-24 07:38:01 +00:00
thorpej c26f962957 Use kernel_map in bus_dmamem_{map,free}(). 1998-02-11 03:08:31 +00:00
thorpej 30aa56fc66 Use M_DMAMAP where appropriate. 1998-02-11 01:37:51 +00:00
thorpej b1d8bffad8 Flush the CPU write buffer in _bus_dmamap_sync(). 1998-02-04 07:35:30 +00:00
thorpej 8abe76d2f0 Add offset and length parameters to bus_dmamap_sync(), used for specifiying
partial syncs of a DMA mapping.
1998-02-04 05:12:46 +00:00
thorpej 99cc8482d1 Change the last argument of bus_dmamap_sync() from bus_dmasync_op_t to int,
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
thorpej 2d403996b2 Add dm_mapsize to bus_dmamap_t and rename BUS_DMAMEM_NOSYNC to
BUS_DMA_COHERENT.
1998-02-04 00:10:30 +00:00
thorpej 5fd0d10994 Add dm_mapsize to bus_dmamap_t and rename BUS_DMAMEM_NOSYNC toBUS_DMA_COHERENT. 1998-02-04 00:04:25 +00:00
thorpej 5ac7e550d1 Implement bus_dmamap_load_mbuf(). 1998-01-27 02:35:58 +00:00
thorpej 9c3ef8899b Don't conditionally define the sgmap_log_entry structure, and turn off
SGMAP logging by default.
1998-01-21 22:36:10 +00:00