1/* 2 * Copyright (c) Red Hat Inc. 3 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sub license, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the 12 * next paragraph) shall be included in all copies or substantial portions 13 * of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 21 * DEALINGS IN THE SOFTWARE. 22 * 23 * Authors: Dave Airlie <airlied@redhat.com> 24 * Jerome Glisse <jglisse@redhat.com> 25 */ 26#ifndef TTM_PAGE_ALLOC 27#define TTM_PAGE_ALLOC 28 29#include "ttm_bo_driver.h" 30#include "ttm_memory.h" 31 32/** 33 * Get count number of pages from pool to pages list. 34 * 35 * @pages: heado of empty linked list where pages are filled. 36 * @flags: ttm flags for page allocation. 37 * @cstate: ttm caching state for the page. 38 * @count: number of pages to allocate. 39 */ 40int ttm_get_pages(struct list_head *pages, 41 int flags, 42 enum ttm_caching_state cstate, 43 unsigned count); 44/** 45 * Put linked list of pages to pool. 46 * 47 * @pages: list of pages to free. 48 * @page_count: number of pages in the list. Zero can be passed for unknown 49 * count. 50 * @flags: ttm flags for page allocation. 51 * @cstate: ttm caching state. 52 */ 53void ttm_put_pages(struct list_head *pages, 54 unsigned page_count, 55 int flags, 56 enum ttm_caching_state cstate); 57/** 58 * Initialize pool allocator. 59 */ 60int ttm_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages); 61/** 62 * Free pool allocator. 63 */ 64void ttm_page_alloc_fini(void); 65 66/** 67 * Output the state of pools to debugfs file 68 */ 69extern int ttm_page_alloc_debugfs(struct seq_file *m, void *data); 70#endif 71