diff options
| author | Francisco Jerez <currojerez@riseup.net> | 2009-12-13 20:07:42 +0100 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2010-01-11 08:47:48 +1000 |
| commit | 588d7d1268658b6a010eb7415bff2f936c51acf7 (patch) | |
| tree | 2436aebea2a3961870c243913b73b112d3f592a9 /drivers/gpu/drm/nouveau/nv04_fifo.c | |
| parent | e8d6d61586b84acfd66ec20142c9a850d2d11544 (diff) | |
drm/nouveau: Add cache_flush/pull fifo engine functions.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv04_fifo.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv04_fifo.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv04_fifo.c b/drivers/gpu/drm/nouveau/nv04_fifo.c index 0c3cd53c731..f31347b8c9b 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) { |