diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2012-01-30 11:48:59 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2012-01-30 12:05:51 +0000 |
| commit | 6f99555b6b64a0e1baad1853569f7bf521c327c3 (patch) | |
| tree | 30b0c6dbb02d5962ca2ad6a23c9476c86d1b3130 | |
| parent | c65ec096e79aa6bda7b2b3ef235e3fd9698b4da7 (diff) | |
sna: Allow the creation of render targets larger than the maximum bo cache
Given that we now handle uploads to and from bo that are larger than the
aperture and that usage of such large bo is rare and so unlikely to
benefit from caching, allow them to be created as render targets and
destroy as soon as they become inactive.
In principle, this finally enables GPU acceleration of ocitysmap on gen4+,
but due to the large cost of creating and destroying large bo it is
disabled on systems that require clflushing. It is, however, a
pre-requisite for exploiting the enhanced capabilities of IvyBridge.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
| -rw-r--r-- | src/sna/kgem.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/sna/kgem.c b/src/sna/kgem.c index 30c46fb7..d97a6ac2 100644 --- a/src/sna/kgem.c +++ b/src/sna/kgem.c @@ -661,7 +661,9 @@ void kgem_init(struct kgem *kgem, int fd, struct pci_device *dev, int gen) kgem->max_object_size = kgem->aperture_total / 2; kgem->max_cpu_size = kgem->aperture_total / 2; - kgem->max_gpu_size = MAX_CACHE_SIZE; + kgem->max_gpu_size = kgem->aperture_total / 2; + if (!kgem->has_llc) + kgem->max_gpu_size = MAX_CACHE_SIZE; if (gen < 40) { /* If we have to use fences for blitting, we have to make * sure we can fit them into the aperture. @@ -672,8 +674,9 @@ void kgem_init(struct kgem *kgem, int fd, struct pci_device *dev, int gen) } if (kgem->max_gpu_size > kgem->max_cpu_size) kgem->max_gpu_size = kgem->max_cpu_size; + kgem->max_tile_size = kgem->aperture_total / 4; - if (kgem->max_tile_size < kgem->max_gpu_size / 2) + if (kgem->max_tile_size > kgem->max_gpu_size / 2) kgem->max_tile_size = kgem->max_gpu_size / 2; DBG(("%s: max object size (gpu=%d, cpu=%d, tile=%d)\n", |