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Diffstat (limited to 'linux-core/ati_pcigart.c')
-rw-r--r--linux-core/ati_pcigart.c32
1 files changed, 31 insertions, 1 deletions
diff --git a/linux-core/ati_pcigart.c b/linux-core/ati_pcigart.c
index 108e1875..ad47ed25 100644
--- a/linux-core/ati_pcigart.c
+++ b/linux-core/ati_pcigart.c
@@ -234,6 +234,19 @@ static int ati_pcigart_needs_unbind_cache_adjust(drm_ttm_backend_t *backend)
return ((backend->flags & DRM_BE_FLAG_BOUND_CACHED) ? 0 : 1);
}
+void ati_pcigart_alloc_page_array(size_t size, struct ati_pcigart_memory *mem)
+{
+ mem->memory = NULL;
+ mem->flags = 0;
+
+ if (size <= 2*PAGE_SIZE)
+ mem->memory = kmalloc(size, GFP_KERNEL | __GFP_NORETRY);
+ if (mem->memory == NULL) {
+ mem->memory = vmalloc(size);
+ mem->flags |= ATI_PCIGART_FLAG_VMALLOC;
+ }
+}
+
static int ati_pcigart_populate(drm_ttm_backend_t *backend,
unsigned long num_pages,
struct page **pages)
@@ -241,6 +254,7 @@ static int ati_pcigart_populate(drm_ttm_backend_t *backend,
ati_pcigart_ttm_priv *atipci_priv = (ati_pcigart_ttm_priv *)backend->private;
struct page **cur_page, **last_page = pages + num_pages;
struct ati_pcigart_memory *mem;
+ unsigned long alloc_size = num_pages * sizeof(struct page *);
DRM_DEBUG("%d\n", num_pages);
if (drm_alloc_memctl(num_pages * sizeof(void *)))
@@ -252,7 +266,11 @@ static int ati_pcigart_populate(drm_ttm_backend_t *backend,
return -1;
}
- mem->page_count = num_pages;
+ ati_pcigart_alloc_page_array(alloc_size, mem);
+ mem->page_count = 0;
+ for (cur_page = pages; cur_page < last_page; ++cur_page) {
+ mem->memory[mem->page_count++] = page_to_phys(*cur_page);
+ }
atipci_priv->mem = mem;
return 0;
}
@@ -262,7 +280,19 @@ static int ati_pcigart_bind_ttm(drm_ttm_backend_t *backend,
int cached)
{
ati_pcigart_ttm_priv *atipci_priv = (ati_pcigart_ttm_priv *)backend->private;
+ struct ati_pcigart_memory *mem = atipci_priv->mem;
+ off_t j;
+
+ j = offset;
+ while (j < (pg_start + mem->page_count)) {
+ j++;
+ }
+
+ for (i = 0, j = offset; i < mem->page_count; i++, j++) {
+ /* write value */
+ }
+ /* need to traverse table and add entries */
DRM_DEBUG("\n");
return -1;
}