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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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gen4+ hardware doesn't use fences for GPU access and the older kernel
doesn't expect userspace to make such a mistake. So don't.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=32190
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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this can remove nodes it shouldn't, let udev run the show.
this is needed for reliably GPU switch.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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... but only account for a fenced used if the object is tiled.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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... so that intel_bufmgr.h can be compiled standalone.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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For relaxed fencing the object may only consume the small set of active
pages, but still requires a fence region once bound into the aperture.
This is the size we need to use when computing the maximum possible
aperture space that could be used by a single batchbuffer and so avoid
hitting ENOSPC.
Reported-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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It makes sure that GPU object destruction is executed in order with
respect to the previous FIFO commands.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Acked-by: Ben Skeggs <bskeggs@redhat.com>
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Both the consumers of this API (sync objects and client throttling)
were expecting this behavior. The kernel used to actually behave the
desired (but incorrect) way for us anyway, but that got fixed a while
back.
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If bufmgr.bo_mrb_exec is not set, drm_intel_bo_mrb_exec returns ENODEV
even though drm_intel_gem_bo_mrb_exec2 will work fine for the RENDER ring.
Fixes xf86-video-intel after commit 'add BLT ring support' (5bed685f76)
with kernels without BSD or BLT ring support (2.6.34 and before).
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=31443
Signed-off-by: Albert Damen <albrt@gmx.net>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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The intent of these was to catch mismatched map/unmap. What it
actually did was check whether there was ever a mapping of that type
(including in a previous life of the buffer through the userland BO
cache), not whether they were mismatched. We don't even actually want
to catch mismatched map/unmap, unless we also do refcounting, since at
one point Mesa would do map/map/use/unmap/unmap. Just remove this
code instead.
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This couldn't be triggered except by overflow, since there's an assert
in unreference to catch the usual failure of over-unreferencing.
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nouveau_bo_unmap called the CPU_FINI IOCTL even if it was a NOSYNC
mapping. It caused no harmful effects (actually CPU_FINI is a no-op on
recent enough kernels) besides the precious CPU cycles being wasted.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
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The kernel has always allowed userspace to underallocate objects
supplied for fencing. However, the kernel only allocated the object size
for the fence in the GTT and so caused tiling corruption. More recently
the kernel does allocate the full fence region in the GTT for an
under-sized object and so advertises that clients may finally make use
of this feature. The biggest benefit is for texture-heavy GL games on
i945 such as World of Padman which go from needing over 1GiB of RAM to
play to fitting in the GTT!
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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_DRM_MALLOC hasn't been a relevant concern since we split libdrm out
from xserver.
Signed-off-by: Adam Jackson <ajax@redhat.com>
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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Signed-off-by: Francisco Jerez <currojerez@riseup.net>
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Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Acked-by: Ben Skeggs <bskeggs@redhat.com>
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Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Acked-by: Ben Skeggs <bskeggs@redhat.com>
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As the higher layers check the error return from libdrm-intel and
are supposed to handle the error (and print their own warning in
extremis) the voluminous output on stderr is just noise and a hazard in
its own right.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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For the upcoming 2.4.22 release.
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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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... and make a mental note to not push commits before having coffee
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Docs say this is necessary, and the kernel now enforces this.
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Avoids requiring nasty hacks around libdrm headers in the new C++
parts of Mesa drivers.
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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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This works in conjunction with newer kernels. If we succeed in requesting
interface 1.4, the we know the kernel provides proper domain numbers. If
not, ignore the domain number as it's bogus (except on Alpha).
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Adam Jackson <ajax@redhat.com>
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The high layers expect to receive a status code on error (on the
pessimistic assumption that the errno value will have been overwritten
by the time the failure is propagated all the way up), so convert
xf86drmMode.c to return -errno on an ioctl error and be consistent with
the rest of the libdrm API.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Signed-off-by: Fernando Carrijo <fcarrijo@yahoo.com.br>
Signed-off-by: Brian Paul <brianp@vmware.com>
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If the mapping succeeds we have a valid pointer. If setting the domain
failures we may incur cache corruption. However the usual failure mode
is because of a hung GPU, in which case it is preferable to ignore the
minor error from setting the domain and continue on oblivious. If
these errors persist, we should rate limit the warning [or even just
remove it].
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Fixes:
Bug 28515 - Failed to allocate framebuffer when exceed 2048 width
https://bugs.freedesktop.org/show_bug.cgi?id=28515
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Mesa uses the returned pitch from alloc_tiled, so make sure that we set
it correctly before modifying the stride used for the SET_TILING call.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Ensure that the user doesn't attempt to specify a stride to use with a
linear buffer by forcing such to be zero.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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execbuffer() returns ENOSPC if it cannot fit the batch buffer into the
aperture which is the error we want to diagnose here.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Rearrange the cache cleanup so that we always scan following a final
unreference, and guard against multiple scans in a single second.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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When allocating a tiled buffer, if we remove the desired tiling mode due
to it being beyond hardware limits, also remove the stride. This ensures
that we only ever use stride 0 with I915_TILING_NONE.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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As we now expose a method to allocate tiled buffers, it makes more sense
to defer the SET_TILING until required. Besides the slim chance that it
will be a no-op, by delaying the change we are less likely to stall on
waiting for a bound buffer to release a fence register.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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We need to inform the kernel if the tiling stride changes and not only
for changes of the tiling mode.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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