Revert "ttm: Utilize the DMA API for pages that have TTM_PAGE_FLAG_DMA32 set."
This reverts commit 69a07f0b117a40fcc1a479358d8e1f41793617f2.
We've tracked a number of problems back to this, and Thomas
thinks we should redesign this for .40/41 anyways so I'm
happy to revert it.
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc.c b/drivers/gpu/drm/ttm/ttm_page_alloc.c
index 737a2a2e..9d9d929 100644
--- a/drivers/gpu/drm/ttm/ttm_page_alloc.c
+++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c
@@ -683,22 +683,14 @@
gfp_flags |= GFP_HIGHUSER;
for (r = 0; r < count; ++r) {
- if ((flags & TTM_PAGE_FLAG_DMA32) && dma_address) {
- void *addr;
- addr = dma_alloc_coherent(NULL, PAGE_SIZE,
- &dma_address[r],
- gfp_flags);
- if (addr == NULL)
- return -ENOMEM;
- p = virt_to_page(addr);
- } else
- p = alloc_page(gfp_flags);
+ p = alloc_page(gfp_flags);
if (!p) {
printk(KERN_ERR TTM_PFX
"Unable to allocate page.");
return -ENOMEM;
}
+
list_add(&p->lru, pages);
}
return 0;
@@ -746,24 +738,12 @@
unsigned long irq_flags;
struct ttm_page_pool *pool = ttm_get_pool(flags, cstate);
struct page *p, *tmp;
- unsigned r;
if (pool == NULL) {
/* No pool for this memory type so free the pages */
- r = page_count-1;
list_for_each_entry_safe(p, tmp, pages, lru) {
- if ((flags & TTM_PAGE_FLAG_DMA32) && dma_address) {
- void *addr = page_address(p);
- WARN_ON(!addr || !dma_address[r]);
- if (addr)
- dma_free_coherent(NULL, PAGE_SIZE,
- addr,
- dma_address[r]);
- dma_address[r] = 0;
- } else
- __free_page(p);
- r--;
+ __free_page(p);
}
/* Make the pages list empty */
INIT_LIST_HEAD(pages);