ttm_page_alloc.h

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/*
 * 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>

int ttm_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages);
void ttm_page_alloc_fini(void);

extern int ttm_pool_populate(struct ttm_tt *ttm);

extern void ttm_pool_unpopulate(struct ttm_tt *ttm);

extern int ttm_page_alloc_debugfs(struct seq_file *m, void *data);


#ifdef CONFIG_SWIOTLB

int ttm_dma_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages);

void ttm_dma_page_alloc_fini(void);

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;
}
#endif

#endif