forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
122 lines
3.4 KiB
122 lines
3.4 KiB
/* |
|
* 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 <[email protected]> |
|
* Jerome Glisse <[email protected]> |
|
*/ |
|
#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 |
|
*/ |
|
int ttm_pool_populate(struct ttm_tt *ttm, struct ttm_operation_ctx *ctx); |
|
|
|
/** |
|
* ttm_pool_unpopulate: |
|
* |
|
* @ttm: The struct ttm_tt which to free backing pages. |
|
* |
|
* Free all pages of @ttm |
|
*/ |
|
void ttm_pool_unpopulate(struct ttm_tt *ttm); |
|
|
|
/** |
|
* Populates and DMA maps pages to fullfil a ttm_dma_populate() request |
|
*/ |
|
int ttm_populate_and_map_pages(struct device *dev, struct ttm_dma_tt *tt, |
|
struct ttm_operation_ctx *ctx); |
|
|
|
/** |
|
* Unpopulates and DMA unmaps pages as part of a |
|
* ttm_dma_unpopulate() request */ |
|
void ttm_unmap_and_unpopulate_pages(struct device *dev, struct ttm_dma_tt *tt); |
|
|
|
/** |
|
* Output the state of pools to debugfs file |
|
*/ |
|
int ttm_page_alloc_debugfs(struct seq_file *m, void *data); |
|
|
|
#if defined(CONFIG_DRM_TTM_DMA_PAGE_POOL) |
|
/** |
|
* 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 |
|
*/ |
|
int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data); |
|
|
|
int ttm_dma_populate(struct ttm_dma_tt *ttm_dma, struct device *dev, |
|
struct ttm_operation_ctx *ctx); |
|
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, |
|
struct ttm_operation_ctx *ctx) |
|
{ |
|
return -ENOMEM; |
|
} |
|
static inline void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma, |
|
struct device *dev) |
|
{ |
|
} |
|
#endif |
|
|
|
#endif
|
|
|