Displaying 5 results from an estimated 5 matches for "tt_uncach".
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tt_uncached
2014 Dec 10
0
[PATCH] drm: fix missing return statement in nouveau_ttm_tt_unpopulate
....c b/drm/nouveau_bo.c
index 686fbd62381e..038d7e30c305 100644
--- a/drm/nouveau_bo.c
+++ b/drm/nouveau_bo.c
@@ -1573,8 +1573,10 @@ nouveau_ttm_tt_unpopulate(struct ttm_tt *ttm)
* so use the DMA API for them.
*/
if (!nv_device_is_cpu_coherent(device) &&
- ttm->caching_state == tt_uncached)
+ ttm->caching_state == tt_uncached) {
ttm_dma_unpopulate(ttm_dma, dev->dev);
+ return;
+ }
#if __OS_HAS_AGP
if (drm->agp.stat == ENABLED) {
--
2.1.3
2016 Jul 13
1
[PATCH 1/2] ttm: remove special handling of coherent objects
...ulate(struct ttm_tt *ttm)
dev = drm->dev;
pdev = device->dev;
- /*
- * Objects matching this condition have been marked as force_coherent,
- * so use the DMA API for them.
- */
- if (!nvxx_device(&drm->device)->func->cpu_coherent &&
- ttm->caching_state == tt_uncached)
- return ttm_dma_populate(ttm_dma, dev->dev);
-
#if IS_ENABLED(CONFIG_AGP)
if (drm->agp.bridge) {
return ttm_agp_tt_populate(ttm);
@@ -1557,16 +1516,6 @@ nouveau_ttm_tt_unpopulate(struct ttm_tt *ttm)
dev = drm->dev;
pdev = device->dev;
- /*
- * Objects matching this con...
2014 Oct 27
4
[PATCH v5 0/4] drm: nouveau: memory coherency on ARM
It has been a couple of months since v4 - apologies for this. v4 has not
received many comments, but this version addresses them and makes a new
attempt at pushing the critical bit for GK20A and Nouveau on ARM in
general.
As a reminder, this series addresses the memory coherency issue that we
are seeing on ARM platforms. Contrary to x86 which invalidates the PCI
caches whenever a write is made by
2010 Jan 12
2
reserve_ram_pages_type failed
On Mon, Jan 11, 2010 at 10:13 AM, Xavier <shiningxc at gmail.com> wrote:
> [ ?268.666662] reserve_ram_pages_type failed 0x9cba000-0x9cbb000,
> track 0x8, req 0x10
> [ ?269.001031] reserve_ram_pages_type failed 0x6ff0000-0x6ff1000,
> track 0x8, req 0x10
> [ ?269.474134] reserve_ram_pages_type failed 0x68f2000-0x68f3000,
> track 0x8, req 0x10
> [ ?269.767270]
2014 Jul 08
8
[PATCH v4 0/6] drm: nouveau: memory coherency on ARM
Another revision of this patchset critical for GK20A to operate.
Previous attempts were exclusively using either TTM's regular page allocator or
the DMA API one. Both have their advantages and drawbacks: the page allocator is
fast but requires explicit synchronization on non-coherent architectures,
whereas the DMA allocator always returns coherent memory, but is also slower,
creates a