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drm/nv10: Balance RTs expected to be accessed simultaneously by the 3d engine.

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Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Francisco Jerez 2010-10-10 06:07:32 +02:00 committed by Ben Skeggs
parent f13b32630d
commit 699ddfd980
1 changed files with 28 additions and 0 deletions
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28
drivers/gpu/drm/nouveau/nouveau_bo.c
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@ -143,6 +143,7 @@ nouveau_bo_new(struct drm_device *dev, struct nouveau_channel *chan,
nvbo->no_vm = no_vm;
nvbo->tile_mode = tile_mode;
nvbo->tile_flags = tile_flags;
nvbo->bo.bdev = &dev_priv->ttm.bdev;
nouveau_bo_fixup_align(dev, tile_mode, nouveau_bo_tile_layout(nvbo),
&align, &size);
@ -177,6 +178,31 @@ set_placement_list(uint32_t *pl, unsigned *n, uint32_t type, uint32_t flags)
pl[(*n)++] = TTM_PL_FLAG_SYSTEM | flags;
}
static void
set_placement_range(struct nouveau_bo *nvbo, uint32_t type)
{
struct drm_nouveau_private *dev_priv = nouveau_bdev(nvbo->bo.bdev);
if (dev_priv->card_type == NV_10 &&
nvbo->tile_mode && (type & TTM_PL_FLAG_VRAM)) {
/*
* Make sure that the color and depth buffers are handled
* by independent memory controller units. Up to a 9x
* speed up when alpha-blending and depth-test are enabled
* at the same time.
*/
int vram_pages = dev_priv->vram_size >> PAGE_SHIFT;
if (nvbo->tile_flags & NOUVEAU_GEM_TILE_ZETA) {
nvbo->placement.fpfn = vram_pages / 2;
nvbo->placement.lpfn = ~0;
} else {
nvbo->placement.fpfn = 0;
nvbo->placement.lpfn = vram_pages / 2;
}
}
}
void
nouveau_bo_placement_set(struct nouveau_bo *nvbo, uint32_t type, uint32_t busy)
{
@ -191,6 +217,8 @@ nouveau_bo_placement_set(struct nouveau_bo *nvbo, uint32_t type, uint32_t busy)
pl->busy_placement = nvbo->busy_placements;
set_placement_list(nvbo->busy_placements, &pl->num_busy_placement,
type | busy, flags);
set_placement_range(nvbo, type);
}
int