1 files changed, 74 insertions, 186 deletions

diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
index f43fa69a1e65..da9eeffe0c6d 100644
--- a/drivers/gpu/drm/ttm/ttm_tt.c
+++ b/drivers/gpu/drm/ttm/ttm_tt.c
@@ -37,10 +37,8 @@
 #include <linux/file.h>
 #include <drm/drm_cache.h>
 #include <drm/ttm/ttm_bo_driver.h>
-#include <drm/ttm/ttm_page_alloc.h>
-#include <drm/ttm/ttm_set_memory.h>
 
-/**
+/*
  * Allocates a ttm structure for the given BO.
  */
 int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc)
@@ -53,12 +51,6 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc)
 	if (bo->ttm)
 		return 0;
 
-	if (bdev->need_dma32)
-		page_flags |= TTM_PAGE_FLAG_DMA32;
-
-	if (bdev->no_retry)
-		page_flags |= TTM_PAGE_FLAG_NO_RETRY;
-
 	switch (bo->type) {
 	case ttm_bo_type_device:
 		if (zero_alloc)
@@ -81,7 +73,7 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc)
 	return 0;
 }
 
-/**
+/*
  * Allocates storage for pointers to the pages that back the ttm.
  */
 static int ttm_tt_alloc_page_directory(struct ttm_tt *ttm)
@@ -93,21 +85,22 @@ static int ttm_tt_alloc_page_directory(struct ttm_tt *ttm)
 	return 0;
 }
 
-static int ttm_dma_tt_alloc_page_directory(struct ttm_dma_tt *ttm)
+static int ttm_dma_tt_alloc_page_directory(struct ttm_tt *ttm)
 {
-	ttm->ttm.pages = kvmalloc_array(ttm->ttm.num_pages,
-					  sizeof(*ttm->ttm.pages) +
-					  sizeof(*ttm->dma_address),
-					  GFP_KERNEL | __GFP_ZERO);
-	if (!ttm->ttm.pages)
+	ttm->pages = kvmalloc_array(ttm->num_pages,
+				    sizeof(*ttm->pages) +
+				    sizeof(*ttm->dma_address),
+				    GFP_KERNEL | __GFP_ZERO);
+	if (!ttm->pages)
 		return -ENOMEM;
-	ttm->dma_address = (void *) (ttm->ttm.pages + ttm->ttm.num_pages);
+
+	ttm->dma_address = (void *)(ttm->pages + ttm->num_pages);
 	return 0;
 }
 
-static int ttm_sg_tt_alloc_page_directory(struct ttm_dma_tt *ttm)
+static int ttm_sg_tt_alloc_page_directory(struct ttm_tt *ttm)
 {
-	ttm->dma_address = kvmalloc_array(ttm->ttm.num_pages,
+	ttm->dma_address = kvmalloc_array(ttm->num_pages,
 					  sizeof(*ttm->dma_address),
 					  GFP_KERNEL | __GFP_ZERO);
 	if (!ttm->dma_address)
@@ -115,104 +108,11 @@ static int ttm_sg_tt_alloc_page_directory(struct ttm_dma_tt *ttm)
 	return 0;
 }
 
-static int ttm_tt_set_page_caching(struct page *p,
-				   enum ttm_caching_state c_old,
-				   enum ttm_caching_state c_new)
-{
-	int ret = 0;
-
-	if (PageHighMem(p))
-		return 0;
-
-	if (c_old != tt_cached) {
-		/* p isn't in the default caching state, set it to
-		 * writeback first to free its current memtype. */
-
-		ret = ttm_set_pages_wb(p, 1);
-		if (ret)
-			return ret;
-	}
-
-	if (c_new == tt_wc)
-		ret = ttm_set_pages_wc(p, 1);
-	else if (c_new == tt_uncached)
-		ret = ttm_set_pages_uc(p, 1);
-
-	return ret;
-}
-
-/*
- * Change caching policy for the linear kernel map
- * for range of pages in a ttm.
- */
-
-static int ttm_tt_set_caching(struct ttm_tt *ttm,
-			      enum ttm_caching_state c_state)
-{
-	int i, j;
-	struct page *cur_page;
-	int ret;
-
-	if (ttm->caching_state == c_state)
-		return 0;
-
-	if (!ttm_tt_is_populated(ttm)) {
-		/* Change caching but don't populate */
-		ttm->caching_state = c_state;
-		return 0;
-	}
-
-	if (ttm->caching_state == tt_cached)
-		drm_clflush_pages(ttm->pages, ttm->num_pages);
-
-	for (i = 0; i < ttm->num_pages; ++i) {
-		cur_page = ttm->pages[i];
-		if (likely(cur_page != NULL)) {
-			ret = ttm_tt_set_page_caching(cur_page,
-						      ttm->caching_state,
-						      c_state);
-			if (unlikely(ret != 0))
-				goto out_err;
-		}
-	}
-
-	ttm->caching_state = c_state;
-
-	return 0;
-
-out_err:
-	for (j = 0; j < i; ++j) {
-		cur_page = ttm->pages[j];
-		if (likely(cur_page != NULL)) {
-			(void)ttm_tt_set_page_caching(cur_page, c_state,
-						      ttm->caching_state);
-		}
-	}
-
-	return ret;
-}
-
-int ttm_tt_set_placement_caching(struct ttm_tt *ttm, uint32_t placement)
-{
-	enum ttm_caching_state state;
-
-	if (placement & TTM_PL_FLAG_WC)
-		state = tt_wc;
-	else if (placement & TTM_PL_FLAG_UNCACHED)
-		state = tt_uncached;
-	else
-		state = tt_cached;
-
-	return ttm_tt_set_caching(ttm, state);
-}
-EXPORT_SYMBOL(ttm_tt_set_placement_caching);
-
 void ttm_tt_destroy_common(struct ttm_bo_device *bdev, struct ttm_tt *ttm)
 {
 	ttm_tt_unpopulate(bdev, ttm);
 
-	if (!(ttm->page_flags & TTM_PAGE_FLAG_PERSISTENT_SWAP) &&
-	    ttm->swap_storage)
+	if (ttm->swap_storage)
 		fput(ttm->swap_storage);
 
 	ttm->swap_storage = NULL;
@@ -226,20 +126,22 @@ void ttm_tt_destroy(struct ttm_bo_device *bdev, struct ttm_tt *ttm)
 
 static void ttm_tt_init_fields(struct ttm_tt *ttm,
 			       struct ttm_buffer_object *bo,
-			       uint32_t page_flags)
+			       uint32_t page_flags,
+			       enum ttm_caching caching)
 {
 	ttm->num_pages = bo->num_pages;
-	ttm->caching_state = tt_cached;
+	ttm->caching = ttm_cached;
 	ttm->page_flags = page_flags;
-	ttm_tt_set_unpopulated(ttm);
+	ttm->dma_address = NULL;
 	ttm->swap_storage = NULL;
 	ttm->sg = bo->sg;
+	ttm->caching = caching;
 }
 
 int ttm_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo,
-		uint32_t page_flags)
+		uint32_t page_flags, enum ttm_caching caching)
 {
-	ttm_tt_init_fields(ttm, bo, page_flags);
+	ttm_tt_init_fields(ttm, bo, page_flags, caching);
 
 	if (ttm_tt_alloc_page_directory(ttm)) {
 		pr_err("Failed allocating page table\n");
@@ -251,20 +153,21 @@ EXPORT_SYMBOL(ttm_tt_init);
 
 void ttm_tt_fini(struct ttm_tt *ttm)
 {
-	kvfree(ttm->pages);
+	if (ttm->pages)
+		kvfree(ttm->pages);
+	else
+		kvfree(ttm->dma_address);
 	ttm->pages = NULL;
+	ttm->dma_address = NULL;
 }
 EXPORT_SYMBOL(ttm_tt_fini);
 
-int ttm_dma_tt_init(struct ttm_dma_tt *ttm_dma, struct ttm_buffer_object *bo,
-		    uint32_t page_flags)
+int ttm_dma_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo,
+		    uint32_t page_flags, enum ttm_caching caching)
 {
-	struct ttm_tt *ttm = &ttm_dma->ttm;
-
-	ttm_tt_init_fields(ttm, bo, page_flags);
+	ttm_tt_init_fields(ttm, bo, page_flags, caching);
 
-	INIT_LIST_HEAD(&ttm_dma->pages_list);
-	if (ttm_dma_tt_alloc_page_directory(ttm_dma)) {
+	if (ttm_dma_tt_alloc_page_directory(ttm)) {
 		pr_err("Failed allocating page table\n");
 		return -ENOMEM;
 	}
@@ -272,19 +175,17 @@ int ttm_dma_tt_init(struct ttm_dma_tt *ttm_dma, struct ttm_buffer_object *bo,
 }
 EXPORT_SYMBOL(ttm_dma_tt_init);
 
-int ttm_sg_tt_init(struct ttm_dma_tt *ttm_dma, struct ttm_buffer_object *bo,
-		   uint32_t page_flags)
+int ttm_sg_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo,
+		   uint32_t page_flags, enum ttm_caching caching)
 {
-	struct ttm_tt *ttm = &ttm_dma->ttm;
 	int ret;
 
-	ttm_tt_init_fields(ttm, bo, page_flags);
+	ttm_tt_init_fields(ttm, bo, page_flags, caching);
 
-	INIT_LIST_HEAD(&ttm_dma->pages_list);
 	if (page_flags & TTM_PAGE_FLAG_SG)
-		ret = ttm_sg_tt_alloc_page_directory(ttm_dma);
+		ret = ttm_sg_tt_alloc_page_directory(ttm);
 	else
-		ret = ttm_dma_tt_alloc_page_directory(ttm_dma);
+		ret = ttm_dma_tt_alloc_page_directory(ttm);
 	if (ret) {
 		pr_err("Failed allocating page table\n");
 		return -ENOMEM;
@@ -293,92 +194,69 @@ int ttm_sg_tt_init(struct ttm_dma_tt *ttm_dma, struct ttm_buffer_object *bo,
 }
 EXPORT_SYMBOL(ttm_sg_tt_init);
 
-void ttm_dma_tt_fini(struct ttm_dma_tt *ttm_dma)
-{
-	struct ttm_tt *ttm = &ttm_dma->ttm;
-
-	if (ttm->pages)
-		kvfree(ttm->pages);
-	else
-		kvfree(ttm_dma->dma_address);
-	ttm->pages = NULL;
-	ttm_dma->dma_address = NULL;
-}
-EXPORT_SYMBOL(ttm_dma_tt_fini);
-
 int ttm_tt_swapin(struct ttm_tt *ttm)
 {
 	struct address_space *swap_space;
 	struct file *swap_storage;
 	struct page *from_page;
 	struct page *to_page;
-	int i;
-	int ret = -ENOMEM;
+	gfp_t gfp_mask;
+	int i, ret;
 
 	swap_storage = ttm->swap_storage;
 	BUG_ON(swap_storage == NULL);
 
 	swap_space = swap_storage->f_mapping;
+	gfp_mask = mapping_gfp_mask(swap_space);
 
 	for (i = 0; i < ttm->num_pages; ++i) {
-		gfp_t gfp_mask = mapping_gfp_mask(swap_space);
-
-		gfp_mask |= (ttm->page_flags & TTM_PAGE_FLAG_NO_RETRY ? __GFP_RETRY_MAYFAIL : 0);
-		from_page = shmem_read_mapping_page_gfp(swap_space, i, gfp_mask);
-
+		from_page = shmem_read_mapping_page_gfp(swap_space, i,
+							gfp_mask);
 		if (IS_ERR(from_page)) {
 			ret = PTR_ERR(from_page);
 			goto out_err;
 		}
 		to_page = ttm->pages[i];
-		if (unlikely(to_page == NULL))
+		if (unlikely(to_page == NULL)) {
+			ret = -ENOMEM;
 			goto out_err;
+		}
 
 		copy_highpage(to_page, from_page);
 		put_page(from_page);
 	}
 
-	if (!(ttm->page_flags & TTM_PAGE_FLAG_PERSISTENT_SWAP))
-		fput(swap_storage);
+	fput(swap_storage);
 	ttm->swap_storage = NULL;
 	ttm->page_flags &= ~TTM_PAGE_FLAG_SWAPPED;
 
 	return 0;
+
 out_err:
 	return ret;
 }
 
-int ttm_tt_swapout(struct ttm_bo_device *bdev,
-		   struct ttm_tt *ttm, struct file *persistent_swap_storage)
+int ttm_tt_swapout(struct ttm_bo_device *bdev, struct ttm_tt *ttm)
 {
 	struct address_space *swap_space;
 	struct file *swap_storage;
 	struct page *from_page;
 	struct page *to_page;
-	int i;
-	int ret = -ENOMEM;
-
-	BUG_ON(ttm->caching_state != tt_cached);
-
-	if (!persistent_swap_storage) {
-		swap_storage = shmem_file_setup("ttm swap",
-						ttm->num_pages << PAGE_SHIFT,
-						0);
-		if (IS_ERR(swap_storage)) {
-			pr_err("Failed allocating swap storage\n");
-			return PTR_ERR(swap_storage);
-		}
-	} else {
-		swap_storage = persistent_swap_storage;
+	gfp_t gfp_mask;
+	int i, ret;
+
+	swap_storage = shmem_file_setup("ttm swap",
+					ttm->num_pages << PAGE_SHIFT,
+					0);
+	if (IS_ERR(swap_storage)) {
+		pr_err("Failed allocating swap storage\n");
+		return PTR_ERR(swap_storage);
 	}
 
 	swap_space = swap_storage->f_mapping;
+	gfp_mask = mapping_gfp_mask(swap_space);
 
 	for (i = 0; i < ttm->num_pages; ++i) {
-		gfp_t gfp_mask = mapping_gfp_mask(swap_space);
-
-		gfp_mask |= (ttm->page_flags & TTM_PAGE_FLAG_NO_RETRY ? __GFP_RETRY_MAYFAIL : 0);
-
 		from_page = ttm->pages[i];
 		if (unlikely(from_page == NULL))
 			continue;
@@ -397,13 +275,11 @@ int ttm_tt_swapout(struct ttm_bo_device *bdev,
 	ttm_tt_unpopulate(bdev, ttm);
 	ttm->swap_storage = swap_storage;
 	ttm->page_flags |= TTM_PAGE_FLAG_SWAPPED;
-	if (persistent_swap_storage)
-		ttm->page_flags |= TTM_PAGE_FLAG_PERSISTENT_SWAP;
 
 	return 0;
+
 out_err:
-	if (!persistent_swap_storage)
-		fput(swap_storage);
+	fput(swap_storage);
 
 	return ret;
 }
@@ -433,10 +309,21 @@ int ttm_tt_populate(struct ttm_bo_device *bdev,
 	if (bdev->driver->ttm_tt_populate)
 		ret = bdev->driver->ttm_tt_populate(bdev, ttm, ctx);
 	else
-		ret = ttm_pool_populate(ttm, ctx);
-	if (!ret)
-		ttm_tt_add_mapping(bdev, ttm);
-	return ret;
+		ret = ttm_pool_alloc(&bdev->pool, ttm, ctx);
+	if (ret)
+		return ret;
+
+	ttm_tt_add_mapping(bdev, ttm);
+	ttm->page_flags |= TTM_PAGE_FLAG_PRIV_POPULATED;
+	if (unlikely(ttm->page_flags & TTM_PAGE_FLAG_SWAPPED)) {
+		ret = ttm_tt_swapin(ttm);
+		if (unlikely(ret != 0)) {
+			ttm_tt_unpopulate(bdev, ttm);
+			return ret;
+		}
+	}
+
+	return 0;
 }
 EXPORT_SYMBOL(ttm_tt_populate);
 
@@ -464,5 +351,6 @@ void ttm_tt_unpopulate(struct ttm_bo_device *bdev,
 	if (bdev->driver->ttm_tt_unpopulate)
 		bdev->driver->ttm_tt_unpopulate(bdev, ttm);
 	else
-		ttm_pool_unpopulate(ttm);
+		ttm_pool_free(&bdev->pool, ttm);
+	ttm->page_flags &= ~TTM_PAGE_FLAG_PRIV_POPULATED;
 }