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| author | Ben Skeggs <bskeggs@redhat.com> | 2010-09-08 15:40:30 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2010-09-24 16:26:02 +1000 |
| commit | e071f8cd714261cb4f5ce7104eb54b16b2bbb0cf (patch) | |
| tree | 425725e223b6162062b9ac9409107b0b04be7cab /drivers/gpu/drm/nouveau/nouveau_irq.c | |
| parent | e1429b4c3c79512f0e1a44d9d895c1db52b8c42f (diff) | |
| download | kernel_samsung_smdk4412-e071f8cd714261cb4f5ce7104eb54b16b2bbb0cf.zip kernel_samsung_smdk4412-e071f8cd714261cb4f5ce7104eb54b16b2bbb0cf.tar.gz kernel_samsung_smdk4412-e071f8cd714261cb4f5ce7104eb54b16b2bbb0cf.tar.bz2 | |
drm/nouveau: handle fifo pusher errors better
The most important part of this change is that we now instruct PFIFO to
drop all pending fetches, rather than attempting to skip a single dword
and hope that things would magically sort themselves out - they usually
don't, and we end up with PFIFO being completely hung.
This commit also adds somewhat more useful logging when these exceptions
occur.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_irq.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_irq.c | 45 |
1 files changed, 37 insertions, 8 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_irq.c b/drivers/gpu/drm/nouveau/nouveau_irq.c index a818306..6fd51a5 100644 --- a/drivers/gpu/drm/nouveau/nouveau_irq.c +++ b/drivers/gpu/drm/nouveau/nouveau_irq.c @@ -202,16 +202,45 @@ nouveau_fifo_irq_handler(struct drm_device *dev) } if (status & NV_PFIFO_INTR_DMA_PUSHER) { - NV_INFO(dev, "PFIFO_DMA_PUSHER - Ch %d\n", chid); + u32 get = nv_rd32(dev, 0x003244); + u32 put = nv_rd32(dev, 0x003240); + u32 push = nv_rd32(dev, 0x003220); + u32 state = nv_rd32(dev, 0x003228); + + if (dev_priv->card_type == NV_50) { + u32 ho_get = nv_rd32(dev, 0x003328); + u32 ho_put = nv_rd32(dev, 0x003320); + u32 ib_get = nv_rd32(dev, 0x003334); + u32 ib_put = nv_rd32(dev, 0x003330); + + NV_INFO(dev, "PFIFO_DMA_PUSHER - Ch %d Get 0x%02x%08x " + "Put 0x%02x%08x IbGet 0x%08x IbPut 0x%08x " + "State 0x%08x Push 0x%08x\n", + chid, ho_get, get, ho_put, put, ib_get, ib_put, + state, push); + + /* METHOD_COUNT, in DMA_STATE on earlier chipsets */ + nv_wr32(dev, 0x003364, 0x00000000); + if (get != put || ho_get != ho_put) { + nv_wr32(dev, 0x003244, put); + nv_wr32(dev, 0x003328, ho_put); + } else + if (ib_get != ib_put) { + nv_wr32(dev, 0x003334, ib_put); + } + } else { + NV_INFO(dev, "PFIFO_DMA_PUSHER - Ch %d Get 0x%08x " + "Put 0x%08x State 0x%08x Push 0x%08x\n", + chid, get, put, state, push); - status &= ~NV_PFIFO_INTR_DMA_PUSHER; - nv_wr32(dev, NV03_PFIFO_INTR_0, - NV_PFIFO_INTR_DMA_PUSHER); + if (get != put) + nv_wr32(dev, 0x003244, put); + } - nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_STATE, 0x00000000); - if (nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_PUT) != get) - nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_GET, - get + 4); + nv_wr32(dev, 0x003228, 0x00000000); + nv_wr32(dev, 0x003220, 0x00000001); + nv_wr32(dev, 0x002100, NV_PFIFO_INTR_DMA_PUSHER); + status &= ~NV_PFIFO_INTR_DMA_PUSHER; } if (status & NV_PFIFO_INTR_SEMAPHORE) { |