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path: root/drivers/gpu/drm/nouveau/nouveau_fence.c
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2011-02-25drm/nvc0: implement semaphores for inter-channel syncBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2011-02-25drm/nv84: switch to new-style semaphoresBen Skeggs
These are the same semaphores nvc0 will use, and they potentially allow us to do much cooler things than our current inter-channel sync impl. Lets switch to them where possible now for some testing. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-12-30drm/nvc0: reserve only subc 0 for kernel useBen Skeggs
Current 3D driver expects this behaviour. While this could be changed, there's no compelling reason to reserve more than one subchannel for the DRM. If we ever need to use an object other then M2MF, we can just re-bind subchannel 0 as required. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-12-21drm/nvc0: implement fencingBen Skeggs
Just simple REF_CNT fencing for the moment. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-12-08drm/nouveau: Avoid potential race between nouveau_fence_update() and context ↵Francisco Jerez
takedown. Signed-off-by: Francisco Jerez <currojerez@riseup.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-12-08drm/nouveau: fix use of drm_mm_node in semaphore objectBen Skeggs
At some point in the future, this bo won't necessarily be backed by a drm_mm_node, so use the start/size fields of the ttm_mem_reg instead. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-12-08drm/nouveau: implicitly insert non-DMA objects into RAMHTBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-12-08drm/nouveau: Spin for a bit in nouveau_fence_wait() before yielding the CPU.Francisco Jerez
Sleeping doesn't pay off for very short delays in comparison with the minimum granularity of schedule_timeout(). Signed-off-by: Francisco Jerez <currojerez@riseup.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-12-03drm/nouveau: tidy up and extend dma object creation interfacesBen Skeggs
Reviewed-by: Francisco Jerez <currojerez@riseup.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-12-03drm/nouveau: fix annoying nouveau_fence type issueMarcin Slusarz
nouveau_fence_* functions are not type safe, which could lead to bugs. Additionally every use of nouveau_fence_unref had to cast struct nouveau_fence to void **. Fix it by renaming old functions and creating static inline functions with new prototypes. We still need old functions, because we pass function pointers to ttm. As we are wrapping functions, drop unused "void *arg" parameter where possible. Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Francisco Jerez <currojerez@riseup.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-12-03drm/nouveau: use object class structs more extensivelyBen Skeggs
The structs themselves, as well as the non-sw object creation function are probably very misnamed now. That's a problem for later :) Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-12-03drm/nouveau: Take fence spinlock in nouveau_fence_channel_fini().Francisco Jerez
Without it there's a potential race with nouveau_fence_update(). Signed-off-by: Francisco Jerez <currojerez@riseup.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-12-03drm/nouveau: Avoid race in the interchannel sync code.Francisco Jerez
It needs a "strong" channel reference because it actually writes to the channel pushbuf, otherwise the corresponding FIFO context could get kicked off in the middle of nouveau_fence_sync(). Signed-off-by: Francisco Jerez <currojerez@riseup.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-12-03drm/nouveau: Make fences take a weak channel reference.Francisco Jerez
Fences didn't increment the channel reference count, and the fenced channel could go away at any time. Fixes a potential race in nouveau_fence_update(). Signed-off-by: Francisco Jerez <currojerez@riseup.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-12-03drm/nouveau: Use lazy fence waits when doing software interchannel sync.Francisco Jerez
Signed-off-by: Francisco Jerez <currojerez@riseup.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-12-03drm/nouveau: fix thinko in channel locking in semaphore pathBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-12-03drm/nouveau: add more fine-grained locking to channel list + structuresBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-11-18drm/nouveau: Fix sleep while atomic in the semaphore code.Francisco Jerez
Signed-off-by: Francisco Jerez <currojerez@riseup.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-10-05drm/nv50: Fix large 3D performance regression caused by the interchannel ↵Francisco Jerez
sync patches. Reported-by: Christoph Bumiller <e0425955@student.tuwien.ac.at> Signed-off-by: Francisco Jerez <currojerez@riseup.net> Tested-by: Maarten Maathuis <madman2003@gmail.com> Tested-by: Xavier Chantry <chantry.xavier@gmail.com> Tested-by: Ben Skeggs <bskeggs@redhat.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-10-05drm/nouveau: Use semaphores to handle inter-channel sync in hardware.Francisco Jerez
Signed-off-by: Francisco Jerez <currojerez@riseup.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-10-05drm/nouveau: Provide a means to have arbitrary work run on fence completion.Francisco Jerez
Signed-off-by: Francisco Jerez <currojerez@riseup.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-10-05drm/nouveau: Minor refactoring/cleanup of the fence code.Francisco Jerez
Mainly to make room for inter-channel sync. Signed-off-by: Francisco Jerez <currojerez@riseup.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-09-03drm/nouveau: Take fence spinlock before reading the last sequence.Francisco Jerez
It fixes a race between the TTM delayed work queue and the GEM IOCTLs (fdo bug 29583) uncovered by the BKL removal. Signed-off-by: Francisco Jerez <currojerez@riseup.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-08-02drm/nouveau: set TASK_(UN)INTERRUPTIBLE before schedule_timeout()Kulikov Vasiliy
set_current_state() is called only once before the first iteration. After return from schedule_timeout() current state is TASK_RUNNING. If we are going to wait again, set_current_state() must be called. Signed-off-by: Kulikov Vasiliy <segooon@gmail.com> Signed-off-by: Francisco Jerez <currojerez@riseup.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-07-13drm/nouveau: reduce usage of fence spinlock to when absolutely necessaryBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-01-11drm/nouveau: Use the software object for fencing.Francisco Jerez
This should avoid a race condition on nv0x, if we're doing it with actual PGRAPH objects and a there's a fence within the FIFO DMA fetch area when a context switch kicks in. In that case we get an ILLEGAL_MTHD interrupt as expected, but the values in PGRAPH_TRAPPED_ADDR aren't calculated correctly and they're almost useless (e.g. you can see ILLEGAL_MTHDs for the now inactive channel, with a wrong offset/data pair). Signed-off-by: Francisco Jerez <currojerez@riseup.net>
2009-12-15drm/nouveau: remove use of -ERESTARTBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2009-12-11drm/nouveau: Add DRM driver for NVIDIA GPUsBen Skeggs
This adds a drm/kms staging non-API stable driver for GPUs from NVIDIA. This driver is a KMS-based driver and requires a compatible nouveau userspace libdrm and nouveau X.org driver. This driver requires firmware files not available in this kernel tree, interested parties can find them via the nouveau project git archive. This driver is reverse engineered, and is in no way supported by nVidia. Support for nearly the complete range of nvidia hw from nv04->g80 (nv50) is available, and the kms driver should support driving nearly all output types (displayport is under development still) along with supporting suspend/resume. This work is all from the upstream nouveau project found at nouveau.freedesktop.org. The original authors list from nouveau git tree is: Anssi Hannula <anssi.hannula@iki.fi> Ben Skeggs <bskeggs@redhat.com> Francisco Jerez <currojerez@riseup.net> Maarten Maathuis <madman2003@gmail.com> Marcin Kościelnicki <koriakin@0x04.net> Matthew Garrett <mjg@redhat.com> Matt Parnell <mparnell@gmail.com> Patrice Mandin <patmandin@gmail.com> Pekka Paalanen <pq@iki.fi> Xavier Chantry <shiningxc@gmail.com> along with project founder Stephane Marchesin <marchesin@icps.u-strasbg.fr> Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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