diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv04_fifo.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv04_fifo.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv04_fifo.c b/drivers/gpu/drm/nouveau/nv04_fifo.c index 0c3cd53c7313..66fe55983b6e 100644 --- a/drivers/gpu/drm/nouveau/nv04_fifo.c +++ b/drivers/gpu/drm/nouveau/nv04_fifo.c @@ -71,6 +71,40 @@ nv04_fifo_reassign(struct drm_device *dev, bool enable) return (reassign == 1); } +bool +nv04_fifo_cache_flush(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_timer_engine *ptimer = &dev_priv->engine.timer; + uint64_t start = ptimer->read(dev); + + do { + if (nv_rd32(dev, NV03_PFIFO_CACHE1_GET) == + nv_rd32(dev, NV03_PFIFO_CACHE1_PUT)) + return true; + + } while (ptimer->read(dev) - start < 100000000); + + NV_ERROR(dev, "Timeout flushing the PFIFO cache.\n"); + + return false; +} + +bool +nv04_fifo_cache_pull(struct drm_device *dev, bool enable) +{ + uint32_t pull = nv_rd32(dev, NV04_PFIFO_CACHE1_PULL0); + + if (enable) { + nv_wr32(dev, NV04_PFIFO_CACHE1_PULL0, pull | 1); + } else { + nv_wr32(dev, NV04_PFIFO_CACHE1_PULL0, pull & ~1); + nv_wr32(dev, NV04_PFIFO_CACHE1_HASH, 0); + } + + return !!(pull & 1); +} + int nv04_fifo_channel_id(struct drm_device *dev) { @@ -83,6 +117,7 @@ nv04_fifo_create_context(struct nouveau_channel *chan) { struct drm_device *dev = chan->dev; struct drm_nouveau_private *dev_priv = dev->dev_private; + unsigned long flags; int ret; ret = nouveau_gpuobj_new_fake(dev, NV04_RAMFC(chan->id), ~0, @@ -93,6 +128,8 @@ nv04_fifo_create_context(struct nouveau_channel *chan) if (ret) return ret; + spin_lock_irqsave(&dev_priv->context_switch_lock, flags); + /* Setup initial state */ dev_priv->engine.instmem.prepare_access(dev, true); RAMFC_WR(DMA_PUT, chan->pushbuf_base); @@ -110,6 +147,8 @@ nv04_fifo_create_context(struct nouveau_channel *chan) /* enable the fifo dma operation */ nv_wr32(dev, NV04_PFIFO_MODE, nv_rd32(dev, NV04_PFIFO_MODE) | (1 << chan->id)); + + spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags); return 0; } |