Kristian Høgsberg [Fri, 22 Feb 2008 16:22:52 +0000 (11:22 -0500)]
Fix one last occurance of struct _drm_i915_batchbuffer.
Thanks to Todd Merrill for pointing it out.
Kristian Høgsberg [Fri, 22 Feb 2008 05:12:39 +0000 (00:12 -0500)]
i915: Remove leading underscore from struct tags.
This matches the changes in mesa to use the system drm includes
for the definitions of the drm ioctl structs.
Kristian Høgsberg [Thu, 21 Feb 2008 20:31:48 +0000 (15:31 -0500)]
Don't free irq resources until after we've unregistered the handler.
Michel Dänzer [Thu, 21 Feb 2008 10:49:38 +0000 (11:49 +0100)]
linux: Clean up vblank related resources from drm_irq_uninstall().
This fixes at least two problems:
* The vblank_disable_fn timer callback could get called after the DRM was
de-initialized, e.g. on X server shutdown.
* Leak of vblank related resources when disabling and re-enabling the IRQ, e.g.
on an X server reset.
Alan Hourihane [Wed, 20 Feb 2008 22:22:49 +0000 (22:22 +0000)]
fix SAREA
Dave Airlie [Wed, 20 Feb 2008 00:02:20 +0000 (10:02 +1000)]
drm: add support for passing state into the suspend hooks.
fix i915 driver to use state for hibernate save avoidance.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Keith Packard [Sun, 17 Feb 2008 03:19:29 +0000 (19:19 -0800)]
[915]: more registers for S3 (DSPCLK_GATE_D, CACHE_MODE_0, MI_ARB_STATE)
Failing to preserve the MI_ARB_STATE register was causing FIFO underruns on
the VGA output on my HP 2510p after resume.
Stephane Marchesin [Sat, 16 Feb 2008 02:50:10 +0000 (03:50 +0100)]
nouveau: no GART on ia64 either.
Ben Skeggs [Fri, 15 Feb 2008 17:33:27 +0000 (04:33 +1100)]
nv40: actually init all tile regs.
Kristian Høgsberg [Tue, 5 Feb 2008 18:27:16 +0000 (13:27 -0500)]
i915: Add a dri2 init path that gets the lock from the dri2 sarea.
Kristian Høgsberg [Tue, 12 Feb 2008 21:08:18 +0000 (16:08 -0500)]
i915: Only look up dev_priv->mmio_map if it's not already set up
Kristian Høgsberg [Tue, 5 Feb 2008 17:27:48 +0000 (12:27 -0500)]
i915: Add I915_PARAM_CHIPSET_ID param to get chipset ID.
Kristian Høgsberg [Tue, 5 Feb 2008 17:25:22 +0000 (12:25 -0500)]
i915: Make sarea_priv setup optional.
Jesse Barnes [Fri, 8 Feb 2008 01:33:28 +0000 (17:33 -0800)]
Restore pipeconf regs unconditionally
On many chipsets, the checks for DPLL enable or VGA mode will prevent the
pipeconf regs from being restored, which could result in a blank display or X
failing to come back after resume. So restore them unconditionally along with
actually restoring pipe B's palette correctly.
Jesse Barnes [Thu, 7 Feb 2008 19:21:09 +0000 (11:21 -0800)]
Fix saveGR array size
Make sure we have enough room for all the GR registers or we'll end up
clobbering the AR index register (which should actually be harmless
unless the BIOS is making an assumption about it).
Jesse Barnes [Thu, 7 Feb 2008 18:48:08 +0000 (10:48 -0800)]
i915: save/restore interrupt state
On resume, if the interrupt state isn't restored correctly, we may end
up with a flood of unexpected or ill-timed interrupts, which could cause
the kernel to disable the interrupt or vblank events to happen at the
wrong time. So save/restore them properly.
Jesse Barnes [Thu, 7 Feb 2008 18:40:06 +0000 (10:40 -0800)]
Fix vblank enable/disable callbacks
There were two problems with the existing callback code: the vblank
enable callback happened multiple times per disable, making drivers more
complex than they had to be, and there was a race between the final
decrement of the vblank usage counter and the next enable call, which
could have resulted in a put->schedule disable->get->enable->disable
sequence, which would be bad.
So add a new vblank_enabled array to track vblank enable on per-pipe
basis, and add a lock to protect it along with the refcount +
enable/disable calls to fix the race.
Thomas Hellstrom [Tue, 5 Feb 2008 09:35:56 +0000 (10:35 +0100)]
i915: Re-report breadcrumbs on poll to the fence manager,
since a breadcrumb may actually turn up before a corresponding fence object
has been placed on the fence ring.
Stuart Bennett [Mon, 28 Jan 2008 22:59:26 +0000 (22:59 +0000)]
nouveau: make nv34 work every time, not just every 2nd time
And make nv30_graph_init a bit more like mmio-traces
Maarten Maathuis [Sat, 2 Feb 2008 11:46:31 +0000 (12:46 +0100)]
nouveau: NV40 can/should now be able to run after the blob.
- Moved the fix from the ddx to drm, because it seemed more appropriate.
- Don't be shy, report if it works for you or not.
Thomas Hellstrom [Thu, 31 Jan 2008 13:11:12 +0000 (14:11 +0100)]
Add an fence_class_manager::last_queued_sequence member, since a
sequence number may actually turn up before the corresponding fence
object has been queued on the ring.
Fence drivers can use this member to determine whether a
sequence number must be re-reported.
Thomas Hellstrom [Wed, 30 Jan 2008 21:14:02 +0000 (22:14 +0100)]
i915: Avoid calling drm_fence_flush_old excessively.
Thomas Hellstrom [Wed, 30 Jan 2008 21:06:02 +0000 (22:06 +0100)]
Simplify the fencing code and differentiate between flushes and
waiting types.
Add a "command_stream_barrier" method to the bo driver.
Ben Skeggs [Wed, 30 Jan 2008 00:40:13 +0000 (11:40 +1100)]
nv40: some more nv67 changes
With some luck the drm-side will be OK now for this chipset.
Mirko [Tue, 29 Jan 2008 15:11:27 +0000 (10:11 -0500)]
Add new RV380 pci id
bug 14289
Jesse Barnes [Tue, 29 Jan 2008 05:05:22 +0000 (21:05 -0800)]
Fix hibernate save/restore of VGA attribute regs
In hibernate, we may end up calling the VGA save regs function twice, so we
need to make sure it's idempotent. That means leaving ARX in index mode after
the first save operation. Fixes hibernate on 965.
Maciej Cencora [Sun, 27 Jan 2008 02:50:31 +0000 (12:50 +1000)]
drm: add initial rs690 support for drm.
This adds support for configuring the RS690 GART.
George Sapountzis [Fri, 25 Jan 2008 14:54:29 +0000 (16:54 +0200)]
mach64: fix after vblank-rework
don't disable vblank interrupts (similar to r128)
Jesse Barnes [Fri, 25 Jan 2008 04:59:51 +0000 (20:59 -0800)]
Fixup modeset ioctl number & typedef usage
Should be 0x08 rather than 0xa0, and shouldn't use typedefs.
Eric Anholt [Thu, 24 Jan 2008 20:32:08 +0000 (12:32 -0800)]
Merge commit 'airlied/i915-ttm-cfu'
This requires updated Mesa to handle the new relocation format.
Jesse Barnes [Thu, 24 Jan 2008 16:57:04 +0000 (08:57 -0800)]
Remove broken 'in vblank' accounting
We need to return an accurate vblank count to the callers of
->get_vblank_counter, and in the Intel case the actual frame count
register isn't udpated until the next active line is displayed, so we
need to return one more than the frame count register if we're currently
in a vblank period.
However, none of the various ways of doing this is working yet, so
disable the logic for now. This may result in a few missed events, but
should fix the hangs some people have seen due to the current code
tripping the wraparound logic in drm_update_vblank_count.
Dave Airlie [Thu, 24 Jan 2008 05:18:09 +0000 (15:18 +1000)]
i915: fix missing header when copying data from userspace
Dave Airlie [Thu, 24 Jan 2008 04:37:40 +0000 (14:37 +1000)]
i915 make relocs use copy from user
Switch relocs to using copy from user and remove index and pass buffer
handles in instead.
Jesse Barnes [Wed, 23 Jan 2008 16:39:57 +0000 (08:39 -0800)]
Fix thinko in get_vblank_counter
Should use vtotal not htotal to figure out if we're in a vblank period.
Jesse Barnes [Wed, 23 Jan 2008 16:38:01 +0000 (08:38 -0800)]
Fix IS_I915G macro
One to many parantheses...
Maarten Maathuis [Wed, 23 Jan 2008 15:40:19 +0000 (16:40 +0100)]
nouveau: Fix warning in nouveau_mem.c
Dave Airlie [Wed, 23 Jan 2008 06:45:09 +0000 (16:45 +1000)]
i915/flush: get the ret the right way around
Dave Airlie [Wed, 23 Jan 2008 06:44:51 +0000 (16:44 +1000)]
drm/i915: add support for E7221
Jesse Barnes [Tue, 22 Jan 2008 23:16:01 +0000 (15:16 -0800)]
Correct vblank count value
The frame count registers don't increment until the start of the next
frame, so make sure we return an incremented count if called during the
actual vblank period.
Jesse Barnes [Tue, 22 Jan 2008 21:11:29 +0000 (13:11 -0800)]
i915 irq fixes
Ack the IRQs correctly (PIPExSTAT first followed by IIR). Don't read
vblank counter registers on disabled pipes (might hang otherwise). And
deal with flipped pipe/plane mappings if present.
Jesse Barnes [Tue, 22 Jan 2008 17:42:37 +0000 (09:42 -0800)]
Merge branch 'master' into vblank-rework, including mach64 support
Conflicts:
linux-core/drmP.h
linux-core/drm_drv.c
shared-core/i915_drv.h
shared-core/i915_irq.c
shared-core/mga_irq.c
shared-core/radeon_irq.c
shared-core/via_irq.c
Mostly trivial conflicts.
mach64 support from Mathieu Bérard.
Dave Airlie [Tue, 22 Jan 2008 03:39:28 +0000 (14:39 +1100)]
Revert "Fix pipe<->plane mapping vs. vblank handling (again)"
This reverts commit
bfc29606e4a818897eebca46a5e23bbe7bc3ce25.
This regresses i915 here for me I can't get greater than 0.333 fps with gears
Stephane Marchesin [Mon, 21 Jan 2008 20:11:47 +0000 (21:11 +0100)]
nouveau: don't forget NV80.
Stephane Marchesin [Mon, 21 Jan 2008 20:01:28 +0000 (21:01 +0100)]
nouveau: new card family for old card designs.
Kyle McMartin [Thu, 17 Jan 2008 23:51:56 +0000 (18:51 -0500)]
i915: fix invalid opcode exception on cpus without clflush
i915_flush_ttm was unconditionally executing a clflush instruction
to (obviously) flush the cache. Instead, check if the cpu supports
clflush, and if not, fall back to calling wbinvd to flush the entire
cache.
Signed-off-by: Kyle McMartin <kmcmartin@redhat.com>
Eric Anholt [Mon, 7 Jan 2008 21:10:50 +0000 (13:10 -0800)]
Add additional explanation of DRM_BO_FLAG_CACHED_MAPPED before I forget again.
Zhenyu Wang [Wed, 9 Jan 2008 03:30:35 +0000 (11:30 +0800)]
i915: Add chipset id for Intel Integrated Graphics Device
This adds new chipset id in drm.
Signed-off-by: Zhenyu Wang <zhenyu.z.wang@intel.com>
Thomas Hellstrom [Tue, 15 Jan 2008 09:03:41 +0000 (10:03 +0100)]
Properly propagate the user-space fence flags.
This avoids a sync flush when user-space has already programmed
and MI_FLUSH in the batchbuffer.
Thomas Hellstrom [Tue, 15 Jan 2008 08:46:59 +0000 (09:46 +0100)]
Define i915_compat.c upper_32_bits for kernels < 2.6.21
Zou Nan hai [Tue, 15 Jan 2008 01:19:02 +0000 (09:19 +0800)]
this is to fix a deadloop in drm hang system issue.
(1 << bits) is an undefined value when bits == 32.
gcc may generate 1 with this expression
which will lead to an infinite retry loop in
drm_ht_just_insert_please.
Because of the different implement of hash_long,
this issue is more frequenly see on 64 bit system
Dave Airlie [Mon, 14 Jan 2008 09:36:10 +0000 (19:36 +1000)]
fixup i915 compat resource allocation
Stephane Marchesin [Mon, 14 Jan 2008 02:16:40 +0000 (03:16 +0100)]
nouveau: make mem alloc debug a little more verbose.
Ben Skeggs [Fri, 11 Jan 2008 01:51:08 +0000 (12:51 +1100)]
nv05: enable ctx/op methods, and ignore patch valid failures.
Yes, I'm quite aware "real" nv04 doesn't support this, hopefully the GPU
will just ignore those PGRAPH_DEBUG_3 bits on that hw.
Stuart Bennett [Mon, 7 Jan 2008 17:38:18 +0000 (17:38 +0000)]
nouveau: AGP reset correction - don't touch FW bit
Ben Skeggs [Mon, 7 Jan 2008 07:56:44 +0000 (18:56 +1100)]
nv50: more small changes
Ben Skeggs [Mon, 7 Jan 2008 07:18:51 +0000 (18:18 +1100)]
nv50: oops, lost some state saving along the way somewhere.
xf86-video-nv will now work again after nouveau.
Ben Skeggs [Mon, 7 Jan 2008 06:23:31 +0000 (17:23 +1100)]
nv50: hook up timer funcs...
Ben Skeggs [Mon, 7 Jan 2008 06:10:36 +0000 (17:10 +1100)]
nv50: abort on chips without ctx ucode
Ben Skeggs [Mon, 7 Jan 2008 06:07:59 +0000 (17:07 +1100)]
nv50: some needed ctx vals
Ben Skeggs [Mon, 7 Jan 2008 05:55:20 +0000 (16:55 +1100)]
nv50: use dummy page in gart tables
Just to be safe, we don't really know exactly how the tables work yet, so
we can't be certain there's a way to say "page not present".
Ben Skeggs [Mon, 7 Jan 2008 05:52:47 +0000 (16:52 +1100)]
nv50: some cleanups + small changes
Stephane Marchesin [Mon, 7 Jan 2008 05:11:33 +0000 (06:11 +0100)]
Nouveau: ppc oops.
Stephane Marchesin [Mon, 7 Jan 2008 04:54:05 +0000 (05:54 +0100)]
Nouveau: move PPC bios copy to firstopen.
Jeremy Kolb [Sun, 6 Jan 2008 15:09:47 +0000 (10:09 -0500)]
nouveau: Add ctx_voodoo for NV86
Pekka Paalanen [Fri, 4 Jan 2008 21:47:57 +0000 (23:47 +0200)]
drm: One forgotten rename of 'mask' to 'proposed_flags'.
Due to commit
d1187641d64f442968a3b9ea6a19de6cdd45acd4.
Xavier Bachelot [Fri, 4 Jan 2008 06:29:04 +0000 (16:29 +1000)]
via: add P4M900 pci id.
bug 12108
Stuart Bennett [Thu, 3 Jan 2008 16:57:55 +0000 (16:57 +0000)]
[PATCH] nouveau: reset AGP on init for < nv40
This is necessary for AGP to work after running bios init scripts on nv3x, and
is seen in mmio traces of all cards (nv04-nv4x)
I'm not making the equivalent change to nv40_mc.c, as early cards (6200, 6800gt)
use the 0x000018XX PBUS and later cards use the 0x000880XX PBUS and I don't know
the effects of using the wrong one
Stuart Bennett [Thu, 27 Dec 2007 01:10:52 +0000 (01:10 +0000)]
[PATCH] nouveau: Fix nv20/30 context loading
Don't set the context as valid until it has been loaded
Dave Airlie [Thu, 3 Jan 2008 07:44:04 +0000 (17:44 +1000)]
mach64: some more minor cleanups
Dave Airlie [Thu, 3 Jan 2008 07:10:30 +0000 (17:10 +1000)]
mach64: cleanup some of the macro formatting
Márton Németh [Thu, 3 Jan 2008 06:56:04 +0000 (16:56 +1000)]
drm: cleanup DRM_DEBUG() parameters
As DRM_DEBUG macro already prints out the __FUNCTION__ string (see
drivers/char/drm/drmP.h), it is not worth doing this again. At some
other places the ending "\n" was added.
airlied:- I cleaned up a few that this patch missed also
Dave Airlie [Thu, 3 Jan 2008 06:05:13 +0000 (16:05 +1000)]
Merge branch 'r500-support'
Dave Airlie [Thu, 3 Jan 2008 06:03:05 +0000 (16:03 +1000)]
remove duplicate pciids
Xiang, Haihao [Wed, 26 Dec 2007 09:13:58 +0000 (17:13 +0800)]
i915: return fence argument from i915_execbuffer ioctl32 routine
Xiang, Haihao [Tue, 25 Dec 2007 08:57:14 +0000 (16:57 +0800)]
i915: i915_execbuffer ioctl32 routine, fix #13732
Keith Packard [Mon, 17 Dec 2007 06:00:45 +0000 (22:00 -0800)]
Change drm_bo_type_dc to drm_bo_type_device and comment usage of this value.
I couldn't figure out what drm_bo_type_dc was for; Dave Airlie finally clued
me in that it was the 'normal' buffer objects with kernel allocated pages
that could be mmapped from the drm device file.
I thought that 'drm_bo_type_device' was a more descriptive name.
I also added a bunch of comments describing the use of the type enum values and
the functions that use them.
Keith Packard [Mon, 17 Dec 2007 04:16:50 +0000 (20:16 -0800)]
Rename inappropriately named 'mask' fields to 'proposed_flags' instead.
Flags pending validation were stored in a misleadingly named field, 'mask'.
As 'mask' is already used to indicate pieces of a flags field which are
changing, it seems better to use a name reflecting the actual purpose of
this field. I chose 'proposed_flags' as they may not actually end up in
'flags', and in an case will be modified when they are moved over.
This affects the API, but not ABI of the user-mode interface.
Keith Packard [Sun, 16 Dec 2007 09:47:51 +0000 (01:47 -0800)]
Use dummy_read_page for unpopulated kernel-allocated ttm pages.
Previously, dummy_read_page was used only for read-only user allocations; it
filled in pages that were not present in the user address map (presumably,
these were allocated but never written to pages).
This patch allows them to be used for read-only ttms allocated from the
kernel, so that applications can over-allocate buffers without forcing every
page to be allocated.
Keith Packard [Sun, 16 Dec 2007 09:12:07 +0000 (01:12 -0800)]
Move dummy_read_page from drm_ttm_set_user to drm_ttm_create.
I'm hoping to use the dummy_read_page for kernel allocated buffers to avoid
allocating extra pages for read-only buffers (like vertex and batch buffers).
This also eliminates the 'write' parameter to drm_ttm_set_user and just
has DRM_TTM_PAGE_WRITE passed into drm_ttm_create.
Keith Packard [Sun, 16 Dec 2007 08:54:25 +0000 (00:54 -0800)]
Clean up and document drm_ttm.c APIs. drm_bind_ttm -> drm_ttm_bind.
Aside from changing drm_bind_ttm to drm_ttm_bind, this patch
adds only documentation and fixes the functions inside drm_ttm.c
to all be prefixed with drm_ttm_.
Li Zefan [Sun, 16 Dec 2007 23:50:45 +0000 (09:50 +1000)]
drm: don't cast a pointer to pointer of list_head
The casting is safe only when the list_head member is the first member of
the structure.
Jesper Juhl [Sun, 16 Dec 2007 23:45:03 +0000 (09:45 +1000)]
While reading some code I stumbled across the use of 'err' in
drivers/char/drm/mga_dma.c::mga_do_cleanup_dma() and I think there's a small
problem.
The variable is only used inside #if __OS_HAS_AGP which is fine, but all
that
ever happens is an assignment to the variable - it is never actually used
for
anything. The variable is nicely initialized to zero which is also what the
return statement at the end of function returns (always at the moment).
It looks to me like that function should be returning 'err' instead of
always
just returning 0. Here's a patch to do that.
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Keith Packard [Fri, 14 Dec 2007 21:19:35 +0000 (13:19 -0800)]
Document drm_ttm_set_user.
Add a comment explaining the parameters for this function
Keith Packard [Fri, 14 Dec 2007 21:19:09 +0000 (13:19 -0800)]
Document drm_buffer_object_validate function.
Just add documentation for this function, no code changes.
Keith Packard [Fri, 14 Dec 2007 20:49:22 +0000 (12:49 -0800)]
Document fence_class mess in drm_bo_setstatus_ioctl
drmBOSetStatus does not bother to set the fence_class parameter.
Fortunately, drm_bo_setstatus_ioctl doesn't end up using it as it
calls drm_bo_handle_validate with use_old_fence_class = 1.
Keith Packard [Fri, 14 Dec 2007 20:45:55 +0000 (12:45 -0800)]
Document drm_bo_handle_validate. Match drm_bo_do_validate parameter order.
Document parameters and usage for drm_bo_handle_validate. Change parameter
order to match drm_bo_do_validate (fence_class has been moved to after
flags, hint and mask values). Existing users of this function have been
changed, but out-of-tree users must be modified separately.
Keith Packard [Fri, 14 Dec 2007 20:33:35 +0000 (12:33 -0800)]
Document drm_bo_do_validate. Remove spurious 'do_wait' parameter.
Add comments about the parameters to drm_bo_do_validate, along
with comments for the DRM_BO_HINT options. Remove the 'do_wait'
parameter as it is duplicated by DRM_BO_HINT_DONT_BLOCK.
Keith Packard [Fri, 14 Dec 2007 19:42:17 +0000 (11:42 -0800)]
Make ttm create/destroy APIs consistent. Pass page_flags in create.
Creating a ttm was done with drm_ttm_init while destruction was done with
drm_destroy_ttm. Renaming these to drm_ttm_create and drm_ttm_destroy makes
their use clearer. Passing page_flags to the create function will allow that
to know whether user or kernel pages are needed, with the goal of allowing
kernel ttms to be saved for later reuse.
Patrice Mandin [Sat, 15 Dec 2007 09:23:30 +0000 (10:23 +0100)]
Revert "nouveau: nv30: missing ramin init, does it brake other hw?"
This reverts commit
46235ea4595152d8dd5f016c18c6845a77db30b0.
Alan Hourihane [Thu, 13 Dec 2007 10:40:36 +0000 (10:40 +0000)]
catch an out of memory condition
Keith Packard [Wed, 12 Dec 2007 04:21:23 +0000 (20:21 -0800)]
Make relocation validate client computed values when debugging
Keith Packard [Thu, 6 Dec 2007 23:12:21 +0000 (15:12 -0800)]
i915: wait for buffer idle before writing relocations
When writing a relocation entry, make sure the target buffer is idle,
otherwise the GPU may see inconsistent data.
Keith Packard [Wed, 5 Dec 2007 04:54:53 +0000 (20:54 -0800)]
Bump driver minor for relocation optimzations
Keith Packard [Tue, 4 Dec 2007 20:22:30 +0000 (12:22 -0800)]
Allow relocation to be skipped when buffers don't move.
One of the costs of superioctl has been the need to perform relocations
inside the kernel. The cost of mapping the buffers to the CPU and writing
data is fairly high, especially if those buffers have been mapped and read
by the GPU.
If we assume that buffers don't move around very often, we can have the
client compute the relocations itself using the previous GPU address. When
that object doesn't move, the kernel can skip computing and writing the
updated data.
Here's a patch which adds a new field to struct drm_bo_info_req called
'presumed_offset', and a new DRM_BO_HINT_PRESUMED_OFFSET that is set when
this field has been filled in by the client.
There are two separate optimizations performed when the presumed_offset is
correct:
1. i915_exec_reloc checks to see if all previous buffer offsets were guessed
correctly. If so, there's no need for it to look at *any* of the
relocations for a buffer. When this happens, it skips the whole
relocation process, simply returning success.
2. i915_apply_reloc checks to see if the target buffer offset was guessed
correctly. If so, it skips mapping the relocatee, computing the
relocation and writing the value. If no relocations are needed, the
relocatee should never be mapped to the CPU, and so the kernel shouldn't
need to wait for any fences to pass.
Dave Airlie [Mon, 10 Dec 2007 05:53:59 +0000 (15:53 +1000)]
Merge branch 'master' into r500-support
Dave Airlie [Mon, 10 Dec 2007 00:13:52 +0000 (10:13 +1000)]
drm: move agp include outside CONFIG_AGP as it isn't dependant on agp in kernel
José Fonseca [Sat, 8 Dec 2007 19:21:27 +0000 (19:21 +0000)]
mach64: comment bus master / ring buffer behavior and security
Jesse Barnes [Fri, 7 Dec 2007 22:24:45 +0000 (14:24 -0800)]
Fix pipe<->plane mapping vs. vblank handling (again)
If drmMinor >= 6, the intel DDX driver will enable vblank events on both
pipes. If drmMinor >= 10 on pre-965 chipsets, the intel DDX driver will
swap the pipe<->plane mapping to allow for framebuffer compression on
laptop screens. This means the secondary vblank counter (corresponding
to pipe B) will be incremented when vblank interrupts occur.
Now Mesa waits for vblank events on whichever plane has a greater
portion of the displayed window. So it will happly ask to wait for the
primary counter even though that one won't increment.
So we can fix this in either the DDX driver, Mesa or the kernel (though
I thought we already had several times).
Since current (and previous) userspace assumes it's talking about a pipe
== plane situation and now uses planes when talking to the kernel, we
should probably just hide the mapping details there (indeed they already
are hidden there for vblank swaps), which this patch does.
So as far as userland is concerned, whether we call things planes or
pipes is irrelevant, as long as kernel developers understand that
userland hands them planes and they have to figure out which pipe that
corresponds to (which will typically be the same on 965+ hardware and
reversed on pre-965 mobile chips).
Dave Airlie [Thu, 6 Dec 2007 06:03:28 +0000 (16:03 +1000)]
take down stuff after asking driver to unload
José Fonseca [Wed, 5 Dec 2007 22:53:02 +0000 (22:53 +0000)]
mach64: make buffer emission macros normal functions