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1 | /************************************************************************** |
2 | * Copyright (c) 2007-2008, Intel Corporation. | |
3 | * All Rights Reserved. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms and conditions of the GNU General Public License, | |
7 | * version 2, as published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
17 | * | |
18 | **************************************************************************/ | |
19 | ||
20 | #ifndef _PSB_GTT_H_ | |
21 | #define _PSB_GTT_H_ | |
22 | ||
23 | #include <drm/drmP.h> | |
d9fc9413 | 24 | #include <drm/drm_gem.h> |
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25 | |
26 | /* This wants cleaning up with respect to the psb_dev and un-needed stuff */ | |
27 | struct psb_gtt { | |
28 | uint32_t gatt_start; | |
29 | uint32_t mmu_gatt_start; | |
30 | uint32_t gtt_start; | |
31 | uint32_t gtt_phys_start; | |
32 | unsigned gtt_pages; | |
33 | unsigned gatt_pages; | |
34 | unsigned long stolen_size; | |
35 | unsigned long vram_stolen_size; | |
36 | struct rw_semaphore sem; | |
37 | }; | |
38 | ||
39 | /* Exported functions */ | |
40 | extern int psb_gtt_init(struct drm_device *dev, int resume); | |
41 | extern void psb_gtt_takedown(struct drm_device *dev); | |
42 | ||
43 | /* Each gtt_range describes an allocation in the GTT area */ | |
44 | struct gtt_range { | |
45 | struct resource resource; /* Resource for our allocation */ | |
46 | u32 offset; /* GTT offset of our object */ | |
47 | struct drm_gem_object gem; /* GEM high level stuff */ | |
48 | int in_gart; /* Currently in the GART (ref ct) */ | |
49 | bool stolen; /* Backed from stolen RAM */ | |
50 | bool mmapping; /* Is mmappable */ | |
51 | struct page **pages; /* Backing pages if present */ | |
52 | int npage; /* Number of backing pages */ | |
a6ba582d | 53 | int roll; /* Roll applied to the GTT entries */ |
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54 | }; |
55 | ||
56 | extern struct gtt_range *psb_gtt_alloc_range(struct drm_device *dev, int len, | |
c269c685 PJ |
57 | const char *name, int backed, |
58 | u32 align); | |
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59 | extern void psb_gtt_kref_put(struct gtt_range *gt); |
60 | extern void psb_gtt_free_range(struct drm_device *dev, struct gtt_range *gt); | |
61 | extern int psb_gtt_pin(struct gtt_range *gt); | |
62 | extern void psb_gtt_unpin(struct gtt_range *gt); | |
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63 | extern void psb_gtt_roll(struct drm_device *dev, |
64 | struct gtt_range *gt, int roll); | |
070839ea | 65 | extern int psb_gtt_restore(struct drm_device *dev); |
8c8f1c95 | 66 | #endif |