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| author | Ben Skeggs <bskeggs@redhat.com> | 2011-07-25 20:26:19 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2011-09-20 16:08:59 +1000 |
| commit | 91a8f1ea4bd98a7de888f7d56e28b72cc0c63ca1 (patch) | |
| tree | 865d8f39aeee90521b97e8f73ed68e9eae34a709 /drivers/gpu/drm/nouveau/nouveau_fence.c | |
| parent | afb0c796d8002a0052662ff337dbd18b5dc5ff97 (diff) | |
| download | op-kernel-dev-91a8f1ea4bd98a7de888f7d56e28b72cc0c63ca1.zip op-kernel-dev-91a8f1ea4bd98a7de888f7d56e28b72cc0c63ca1.tar.gz | |
drm/nouveau: workaround semaphore hw bug causing unnecessary interrupts
The HW will only accept the DMA_FROM_MEMORY class for DMA_SEMAPHORE without
asking the driver to intervene.
It appears that semaphores will work correctly even without DMA_IN_MEMORY,
so lets avoid the large amount of interrupts generated by x-chan sync.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_fence.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_fence.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.c b/drivers/gpu/drm/nouveau/nouveau_fence.c index c919cfc..81116cf 100644 --- a/drivers/gpu/drm/nouveau/nouveau_fence.c +++ b/drivers/gpu/drm/nouveau/nouveau_fence.c @@ -519,7 +519,7 @@ nouveau_fence_channel_init(struct nouveau_channel *chan) if (USE_SEMA(dev) && dev_priv->chipset < 0x84) { struct ttm_mem_reg *mem = &dev_priv->fence.bo->bo.mem; - ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY, + ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_FROM_MEMORY, mem->start << PAGE_SHIFT, mem->size, NV_MEM_ACCESS_RW, NV_MEM_TARGET_VRAM, &obj); |
