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authorArthur Huillet <arthur.huillet@free.fr>2007-07-11 02:35:10 +0200
committerArthur Huillet <arthur.huillet@free.fr>2007-07-11 02:35:10 +0200
commit694e1c5c3f768436651ddf95e11ab5a89ccc8ffa (patch)
treea33f5d701987ee5a78e749a331fa376c8453fff4 /shared-core/nouveau_mem.c
parent04e4922c0c407a9f0cfe268f62130891e98fc682 (diff)
Added support for PCIGART for PCI(E) cards. Bumped DRM interface patchlevel.
Diffstat (limited to 'shared-core/nouveau_mem.c')
-rw-r--r--shared-core/nouveau_mem.c89
1 files changed, 64 insertions, 25 deletions
diff --git a/shared-core/nouveau_mem.c b/shared-core/nouveau_mem.c
index c75a9356..79f94fd4 100644
--- a/shared-core/nouveau_mem.c
+++ b/shared-core/nouveau_mem.c
@@ -211,6 +211,10 @@ void nouveau_mem_close(struct drm_device *dev)
drm_nouveau_private_t *dev_priv = dev->dev_private;
nouveau_mem_takedown(&dev_priv->agp_heap);
nouveau_mem_takedown(&dev_priv->fb_heap);
+ if ( dev_priv->pci_heap )
+ {
+ nouveau_mem_takedown(&dev_priv->pci_heap);
+ }
}
/* returns the amount of FB ram in bytes */
@@ -283,8 +287,10 @@ int nouveau_mem_init(struct drm_device *dev)
{
drm_nouveau_private_t *dev_priv = dev->dev_private;
uint32_t fb_size;
+ drm_scatter_gather_t sgreq;
dev_priv->agp_phys=0;
dev_priv->fb_phys=0;
+ sgreq . size = 4 << 20; //4MB of PCI scatter-gather zone
/* init AGP */
dev_priv->agp_heap=NULL;
@@ -340,8 +346,26 @@ int nouveau_mem_init(struct drm_device *dev)
dev_priv->agp_phys = info.aperture_base;
dev_priv->agp_available_size = info.aperture_size;
}
+
+goto have_agp;
no_agp:
+ dev_priv->pci_heap = NULL;
+ DRM_DEBUG("Allocating sg memory for PCI DMA\n");
+ if ( drm_sg_alloc(dev, &sgreq) )
+ {
+ DRM_ERROR("Unable to allocate 4MB of scatter-gather pages for PCI DMA!");
+ goto no_pci;
+ }
+ DRM_DEBUG("Got %d KiB\n", (dev->sg->pages * PAGE_SIZE) >> 10);
+ if ( nouveau_mem_init_heap(&dev_priv->pci_heap, dev->sg->virtual, dev->sg->pages * PAGE_SIZE))
+ {
+ DRM_ERROR("Unable to initialize pci_heap!");
+ goto no_pci;
+ }
+
+no_pci:
+have_agp:
/* setup a mtrr over the FB */
dev_priv->fb_mtrr = drm_mtrr_add(drm_get_resource_start(dev, 1),
nouveau_mem_fb_amount(dev),
@@ -405,29 +429,40 @@ struct mem_block* nouveau_mem_alloc(struct drm_device *dev, int alignment, uint6
if (size & (~PAGE_MASK))
size = ((size/PAGE_SIZE) + 1) * PAGE_SIZE;
- if (flags&NOUVEAU_MEM_AGP) {
- type=NOUVEAU_MEM_AGP;
- block = nouveau_mem_alloc_block(dev_priv->agp_heap, size,
- alignment, filp);
- if (block) goto alloc_ok;
- }
- if (flags&(NOUVEAU_MEM_FB|NOUVEAU_MEM_FB_ACCEPTABLE)) {
- type=NOUVEAU_MEM_FB;
- if (!(flags&NOUVEAU_MEM_MAPPED)) {
- block = nouveau_mem_alloc_block(dev_priv->fb_nomap_heap,
- size, alignment, filp);
- if (block) goto alloc_ok;
- }
- block = nouveau_mem_alloc_block(dev_priv->fb_heap, size,
- alignment, filp);
- if (block) goto alloc_ok;
- }
- if (flags&NOUVEAU_MEM_AGP_ACCEPTABLE) {
- type=NOUVEAU_MEM_AGP;
- block = nouveau_mem_alloc_block(dev_priv->agp_heap, size,
- alignment, filp);
- if (block) goto alloc_ok;
- }
+
+#define NOUVEAU_MEM_ALLOC_AGP {\
+ type=NOUVEAU_MEM_AGP;\
+ block = nouveau_mem_alloc_block(dev_priv->agp_heap, size,\
+ alignment, filp);\
+ if (block) goto alloc_ok;\
+ }
+
+#define NOUVEAU_MEM_ALLOC_PCI {\
+ type = NOUVEAU_MEM_PCI;\
+ block = nouveau_mem_alloc_block(dev_priv->pci_heap, size, alignment, filp);\
+ if ( block ) goto alloc_ok;\
+ }
+
+#define NOUVEAU_MEM_ALLOC_FB {\
+ type=NOUVEAU_MEM_FB;\
+ if (!(flags&NOUVEAU_MEM_MAPPED)) {\
+ block = nouveau_mem_alloc_block(dev_priv->fb_nomap_heap,\
+ size, alignment, filp); \
+ if (block) goto alloc_ok;\
+ }\
+ block = nouveau_mem_alloc_block(dev_priv->fb_heap, size,\
+ alignment, filp);\
+ if (block) goto alloc_ok;\
+ }
+
+
+ if (flags&NOUVEAU_MEM_FB) NOUVEAU_MEM_ALLOC_FB
+ if (flags&NOUVEAU_MEM_AGP) NOUVEAU_MEM_ALLOC_AGP
+ if (flags&NOUVEAU_MEM_PCI) NOUVEAU_MEM_ALLOC_PCI
+ if (flags&NOUVEAU_MEM_FB_ACCEPTABLE) NOUVEAU_MEM_ALLOC_FB
+ if (flags&NOUVEAU_MEM_AGP_ACCEPTABLE) NOUVEAU_MEM_ALLOC_AGP
+ if (flags&NOUVEAU_MEM_PCI_ACCEPTABLE) NOUVEAU_MEM_ALLOC_PCI
+
return NULL;
@@ -436,15 +471,19 @@ alloc_ok:
if (flags&NOUVEAU_MEM_MAPPED)
{
- int ret;
+ int ret = 0;
block->flags|=NOUVEAU_MEM_MAPPED;
if (type == NOUVEAU_MEM_AGP)
ret = drm_addmap(dev, block->start - dev->agp->base, block->size,
_DRM_AGP, 0, &block->map);
- else
+ else if (type == NOUVEAU_MEM_FB)
ret = drm_addmap(dev, block->start, block->size,
_DRM_FRAME_BUFFER, 0, &block->map);
+ else if (type == NOUVEAU_MEM_PCI)
+ ret = drm_addmap(dev, block->start - (unsigned long int)dev->sg->virtual, block->size,
+ _DRM_SCATTER_GATHER, 0, &block->map);
+
if (ret) {
nouveau_mem_free_block(block);
return NULL;