drm/ttm: add support for different pool sizes

Correctly handle different page sizes in the memory accounting.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/ttm/ttm_memory.c

@@ -546,7 +546,7 @@ int ttm_mem_global_alloc(struct ttm_mem_global *glob, uint64_t memory,
 EXPORT_SYMBOL(ttm_mem_global_alloc);
 
 int ttm_mem_global_alloc_page(struct ttm_mem_global *glob,
-			      struct page *page)
+			      struct page *page, uint64_t size)
 {
 
 	struct ttm_mem_zone *zone = NULL;
@@ -563,10 +563,11 @@ int ttm_mem_global_alloc_page(struct ttm_mem_global *glob,
 	if (glob->zone_dma32 && page_to_pfn(page) > 0x00100000UL)
 		zone = glob->zone_kernel;
 #endif
-	return ttm_mem_global_alloc_zone(glob, zone, PAGE_SIZE, false, false);
+	return ttm_mem_global_alloc_zone(glob, zone, size, false, false);
 }
 
-void ttm_mem_global_free_page(struct ttm_mem_global *glob, struct page *page)
+void ttm_mem_global_free_page(struct ttm_mem_global *glob, struct page *page,
+			      uint64_t size)
 {
 	struct ttm_mem_zone *zone = NULL;
 
@@ -577,10 +578,9 @@ void ttm_mem_global_free_page(struct ttm_mem_global *glob, struct page *page)
 	if (glob->zone_dma32 && page_to_pfn(page) > 0x00100000UL)
 		zone = glob->zone_kernel;
 #endif
-	ttm_mem_global_free_zone(glob, zone, PAGE_SIZE);
+	ttm_mem_global_free_zone(glob, zone, size);
 }
 
-
 size_t ttm_round_pot(size_t size)
 {
 	if ((size & (size - 1)) == 0)

drivers/gpu/drm/ttm/ttm_page_alloc.c

@@ -882,7 +882,8 @@ int ttm_pool_populate(struct ttm_tt *ttm)
 			return -ENOMEM;
 		}
 
-		ret = ttm_mem_global_alloc_page(mem_glob, ttm->pages[i]);
+		ret = ttm_mem_global_alloc_page(mem_glob, ttm->pages[i],
+						PAGE_SIZE);
 		if (unlikely(ret != 0)) {
 			ttm_pool_unpopulate(ttm);
 			return -ENOMEM;
@@ -909,7 +910,7 @@ void ttm_pool_unpopulate(struct ttm_tt *ttm)
 	for (i = 0; i < ttm->num_pages; ++i) {
 		if (ttm->pages[i]) {
 			ttm_mem_global_free_page(ttm->glob->mem_glob,
-						 ttm->pages[i]);
+						 ttm->pages[i], PAGE_SIZE);
 			ttm_put_pages(&ttm->pages[i], 1,
 				      ttm->page_flags,
 				      ttm->caching_state);

drivers/gpu/drm/ttm/ttm_page_alloc_dma.c

@@ -902,7 +902,8 @@ int ttm_dma_populate(struct ttm_dma_tt *ttm_dma, struct device *dev)
 			return -ENOMEM;
 		}
 
-		ret = ttm_mem_global_alloc_page(mem_glob, ttm->pages[i]);
+		ret = ttm_mem_global_alloc_page(mem_glob, ttm->pages[i],
+						pool->size);
 		if (unlikely(ret != 0)) {
 			ttm_dma_unpopulate(ttm_dma, dev);
 			return -ENOMEM;
@@ -967,13 +968,13 @@ void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma, struct device *dev)
 	if (is_cached) {
 		list_for_each_entry_safe(d_page, next, &ttm_dma->pages_list, page_list) {
 			ttm_mem_global_free_page(ttm->glob->mem_glob,
-						 d_page->p);
+						 d_page->p, pool->size);
 			ttm_dma_page_put(pool, d_page);
 		}
 	} else {
 		for (i = 0; i < count; i++) {
 			ttm_mem_global_free_page(ttm->glob->mem_glob,
-						 ttm->pages[i]);
+						 ttm->pages[i], pool->size);
 		}
 	}
 

include/drm/ttm/ttm_memory.h

@@ -150,9 +150,9 @@ extern int ttm_mem_global_alloc(struct ttm_mem_global *glob, uint64_t memory,
 extern void ttm_mem_global_free(struct ttm_mem_global *glob,
 				uint64_t amount);
 extern int ttm_mem_global_alloc_page(struct ttm_mem_global *glob,
-				     struct page *page);
+				     struct page *page, uint64_t size);
 extern void ttm_mem_global_free_page(struct ttm_mem_global *glob,
-				     struct page *page);
+				     struct page *page, uint64_t size);
 extern size_t ttm_round_pot(size_t size);
 extern uint64_t ttm_get_kernel_zone_memory_size(struct ttm_mem_global *glob);
 #endif