mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-22 02:20:40 +00:00
e2e966636a
Drivers like vmwgfx may want to test whether the dma page pool is present or not. Since it's activated by default by TTM if compiled-in, define a hidden configuration option that the driver can test for. Cc: Christian König <christian.koenig@amd.com> Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by: Christian König <christian.koenig@amd.com>
122 lines
3.4 KiB
C
122 lines
3.4 KiB
C
/*
|
|
* 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
|
|
*/
|
|
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
|