2014-02-16 5:27 GMT+01:00 Ilia Mirkin imirkin@alum.mit.edu:
Commit a55409066 ("drm/nv50-: map TTM_PL_SYSTEM through a BAR for CPU access") made it possible to work with tiled memory. However mem->mm_node is not a nouveau_mem for AGP-using pre-NV50 cards, but a drm_mm_node, as created by the ttm_bo_manager_func. As such, extend the untiled check to explicitly include all pre-nv50 cards.
Reported-by: Ronald ronald645@gmail.com Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=74613 Signed-off-by: Ilia Mirkin imirkin@alum.mit.edu
Tested-by: Ronald Uitermark ronald645@gmail.com
Hmmm... this seems like a really fragile semantic, I wonder if more mem->mm_node usages have to be audited. But this one's quick and easy. I'd rather see something a little more solid around dealing with these differences, but not sure how without reading all the ttm gunk. Perhaps just make sure it's always a nouveau_mem by wrapping the ttm_bo_manager logic?
drivers/gpu/drm/nouveau/nouveau_bo.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c index 488686d..4aed171 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -1249,7 +1249,7 @@ nouveau_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) mem->bus.is_iomem = !dev->agp->cant_use_aperture; } #endif
if (!node->memtype)
if (nv_device(drm->device)->card_type < NV_50 || !node->memtype) /* untiled */ break; /* fallthrough, tiled memory */-- 1.8.3.2