projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b5e89ed5 DA |
1 | /** |
| 2 | * \file drm_memory.h | |
| 1da177e4 LT |
3 | * Memory management wrappers for DRM |
| 4 | * | |
| 5 | * \author Rickard E. (Rik) Faith <faith@valinux.com> | |
| 6 | * \author Gareth Hughes <gareth@valinux.com> | |
| 7 | */ | |
| 8 | ||
| b5e89ed5 | 9 | /* |
| 1da177e4 LT |
10 | * Created: Thu Feb 4 14:00:34 1999 by faith@valinux.com |
| 11 | * | |
| 12 | * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. | |
| 13 | * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. | |
| 14 | * All Rights Reserved. | |
| 15 | * | |
| 16 | * Permission is hereby granted, free of charge, to any person obtaining a | |
| 17 | * copy of this software and associated documentation files (the "Software"), | |
| 18 | * to deal in the Software without restriction, including without limitation | |
| 19 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
| 20 | * and/or sell copies of the Software, and to permit persons to whom the | |
| 21 | * Software is furnished to do so, subject to the following conditions: | |
| 22 | * | |
| 23 | * The above copyright notice and this permission notice (including the next | |
| 24 | * paragraph) shall be included in all copies or substantial portions of the | |
| 25 | * Software. | |
| 26 | * | |
| 27 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| 28 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| 29 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
| 30 | * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
| 31 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
| 32 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
| 33 | * OTHER DEALINGS IN THE SOFTWARE. | |
| 34 | */ | |
| 35 | ||
| 36 | #include <linux/config.h> | |
| 37 | #include <linux/highmem.h> | |
| 38 | #include <linux/vmalloc.h> | |
| 39 | #include "drmP.h" | |
| 40 | ||
| 41 | /** | |
| 42 | * Cut down version of drm_memory_debug.h, which used to be called | |
| b5e89ed5 | 43 | * drm_memory.h. |
| 1da177e4 LT |
44 | */ |
| 45 | ||
| 46 | #if __OS_HAS_AGP | |
| 47 | ||
| 48 | #include <linux/vmalloc.h> | |
| 49 | ||
| 50 | #ifdef HAVE_PAGE_AGP | |
| 51 | #include <asm/agp.h> | |
| 52 | #else | |
| 53 | # ifdef __powerpc__ | |
| 54 | # define PAGE_AGP __pgprot(_PAGE_KERNEL | _PAGE_NO_CACHE) | |
| 55 | # else | |
| 56 | # define PAGE_AGP PAGE_KERNEL | |
| 57 | # endif | |
| 58 | #endif | |
| 59 | ||
| b5e89ed5 | 60 | static inline unsigned long drm_follow_page(void *vaddr) |
| 1da177e4 | 61 | { |
| b5e89ed5 DA |
62 | pgd_t *pgd = pgd_offset_k((unsigned long)vaddr); |
| 63 | pud_t *pud = pud_offset(pgd, (unsigned long)vaddr); | |
| 64 | pmd_t *pmd = pmd_offset(pud, (unsigned long)vaddr); | |
| 65 | pte_t *ptep = pte_offset_kernel(pmd, (unsigned long)vaddr); | |
| 1da177e4 LT |
66 | return pte_pfn(*ptep) << PAGE_SHIFT; |
| 67 | } | |
| 68 | ||
| b5e89ed5 | 69 | #else /* __OS_HAS_AGP */ |
| 1da177e4 | 70 | |
| b5e89ed5 | 71 | static inline unsigned long drm_follow_page(void *vaddr) |
| 1da177e4 | 72 | { |
| b5e89ed5 | 73 | return 0; |
| 1da177e4 LT |
74 | } |
| 75 | ||
| 76 | #endif | |
| 77 | ||
| 31f64bd1 DA |
78 | void *drm_ioremap(unsigned long offset, unsigned long size, |
| 79 | drm_device_t * dev); | |
| 1da177e4 | 80 | |
| 31f64bd1 DA |
81 | void drm_ioremapfree(void *pt, unsigned long size, |
| 82 | drm_device_t * dev); |