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author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
commit | 57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch) | |
tree | 5e910f0e82173f4ef4f51111366a3f1299037a7b /include/drm/ttm/ttm_page_alloc.h |
Initial import
Diffstat (limited to 'include/drm/ttm/ttm_page_alloc.h')
-rw-r--r-- | include/drm/ttm/ttm_page_alloc.h | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/include/drm/ttm/ttm_page_alloc.h b/include/drm/ttm/ttm_page_alloc.h new file mode 100644 index 000000000..49a828425 --- /dev/null +++ b/include/drm/ttm/ttm_page_alloc.h @@ -0,0 +1,110 @@ +/* + * Copyright (c) Red Hat Inc. + + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sub license, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + * Authors: Dave Airlie <airlied@redhat.com> + * Jerome Glisse <jglisse@redhat.com> + */ +#ifndef TTM_PAGE_ALLOC +#define TTM_PAGE_ALLOC + +#include <drm/ttm/ttm_bo_driver.h> +#include <drm/ttm/ttm_memory.h> + +struct device; + +/** + * Initialize pool allocator. + */ +int ttm_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages); +/** + * Free pool allocator. + */ +void ttm_page_alloc_fini(void); + +/** + * ttm_pool_populate: + * + * @ttm: The struct ttm_tt to contain the backing pages. + * + * Add backing pages to all of @ttm + */ +extern int ttm_pool_populate(struct ttm_tt *ttm); + +/** + * ttm_pool_unpopulate: + * + * @ttm: The struct ttm_tt which to free backing pages. + * + * Free all pages of @ttm + */ +extern void ttm_pool_unpopulate(struct ttm_tt *ttm); + +/** + * Output the state of pools to debugfs file + */ +extern int ttm_page_alloc_debugfs(struct seq_file *m, void *data); + + +#if defined(CONFIG_SWIOTLB) || defined(CONFIG_INTEL_IOMMU) +/** + * Initialize pool allocator. + */ +int ttm_dma_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages); + +/** + * Free pool allocator. + */ +void ttm_dma_page_alloc_fini(void); + +/** + * Output the state of pools to debugfs file + */ +extern int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data); + +extern int ttm_dma_populate(struct ttm_dma_tt *ttm_dma, struct device *dev); +extern void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma, struct device *dev); + +#else +static inline int ttm_dma_page_alloc_init(struct ttm_mem_global *glob, + unsigned max_pages) +{ + return -ENODEV; +} + +static inline void ttm_dma_page_alloc_fini(void) { return; } + +static inline int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data) +{ + return 0; +} +static inline int ttm_dma_populate(struct ttm_dma_tt *ttm_dma, + struct device *dev) +{ + return -ENOMEM; +} +static inline void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma, + struct device *dev) +{ +} +#endif + +#endif |