0d74f86f37
. and some comments to make it easier to understand. Ackedby: Randy Dunlap <randy.dunlap@oracle.com> [v2: Added some more updates from Randy Dunlap] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
74 lines
2.5 KiB
C
74 lines
2.5 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 "ttm_bo_driver.h"
|
|
#include "ttm_memory.h"
|
|
|
|
/**
|
|
* Get count number of pages from pool to pages list.
|
|
*
|
|
* @pages: head of empty linked list where pages are filled.
|
|
* @flags: ttm flags for page allocation.
|
|
* @cstate: ttm caching state for the page.
|
|
* @count: number of pages to allocate.
|
|
* @dma_address: The DMA (bus) address of pages (if TTM_PAGE_FLAG_DMA32 set).
|
|
*/
|
|
int ttm_get_pages(struct list_head *pages,
|
|
int flags,
|
|
enum ttm_caching_state cstate,
|
|
unsigned count,
|
|
dma_addr_t *dma_address);
|
|
/**
|
|
* Put linked list of pages to pool.
|
|
*
|
|
* @pages: list of pages to free.
|
|
* @page_count: number of pages in the list. Zero can be passed for unknown
|
|
* count.
|
|
* @flags: ttm flags for page allocation.
|
|
* @cstate: ttm caching state.
|
|
* @dma_address: The DMA (bus) address of pages (if TTM_PAGE_FLAG_DMA32 set).
|
|
*/
|
|
void ttm_put_pages(struct list_head *pages,
|
|
unsigned page_count,
|
|
int flags,
|
|
enum ttm_caching_state cstate,
|
|
dma_addr_t *dma_address);
|
|
/**
|
|
* 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);
|
|
|
|
/**
|
|
* Output the state of pools to debugfs file
|
|
*/
|
|
extern int ttm_page_alloc_debugfs(struct seq_file *m, void *data);
|
|
#endif
|