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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6320 | serge | 1 | /* |
| 2 | * Copyright © 2008-2012 Intel Corporation |
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| 3 | * |
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| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 5 | * copy of this software and associated documentation files (the "Software"), |
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| 6 | * to deal in the Software without restriction, including without limitation |
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| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
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| 9 | * Software is furnished to do so, subject to the following conditions: |
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| 10 | * |
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| 11 | * The above copyright notice and this permission notice (including the next |
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| 12 | * paragraph) shall be included in all copies or substantial portions of the |
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| 13 | * Software. |
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| 14 | * |
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| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
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| 21 | * IN THE SOFTWARE. |
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| 22 | * |
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| 23 | * Authors: |
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| 24 | * Eric Anholt |
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| 25 | * Chris Wilson |
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| 26 | * |
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| 27 | */ |
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| 28 | |||
| 29 | #include |
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| 30 | #include |
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| 31 | #include |
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| 32 | #include "intel_drv.h" |
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| 33 | #include "i915_drv.h" |
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| 34 | |||
| 35 | static addr_t dummy_fb_page; |
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| 36 | static struct kos_framebuffer *fake_fb; |
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| 37 | |||
| 38 | int fake_framebuffer_create() |
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| 39 | { |
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| 40 | struct kos_framebuffer *kfb; |
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| 41 | addr_t dummy_table; |
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| 42 | addr_t *pt_addr; |
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| 43 | int pde, pte; |
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| 44 | |||
| 45 | kfb = kzalloc(sizeof(struct kos_framebuffer),0); |
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| 46 | if(kfb == NULL) |
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| 47 | goto err_0; |
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| 48 | |||
| 49 | dummy_fb_page = AllocPage(); |
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| 50 | if(dummy_fb_page == 0) |
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| 51 | goto err_1; |
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| 52 | |||
| 53 | for(pde = 0; pde < 8; pde++) |
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| 54 | { |
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| 55 | dummy_table = AllocPage(); |
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| 56 | if(dummy_table == 0) |
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| 57 | goto err_2; |
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| 58 | |||
| 59 | kfb->pde[pde] = dummy_table|PG_UW; |
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| 60 | |||
| 61 | pt_addr = kmap_atomic((struct page*)dummy_table); |
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| 62 | for(pte = 0; pte < 1024; pte++) |
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| 63 | pt_addr[pte] = dummy_fb_page|PG_UW; |
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| 64 | kunmap_atomic(pt_addr); |
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| 65 | }; |
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| 66 | |||
| 67 | fake_fb = kfb; |
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| 68 | |||
| 69 | return 0; |
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| 70 | |||
| 71 | err_2: |
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| 72 | for(pte = 0; pte < pde; pte++) |
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| 73 | FreePage(kfb->pde[pte]); |
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| 74 | FreePage(dummy_fb_page); |
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| 75 | err_1: |
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| 76 | kfree(kfb); |
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| 77 | err_0: |
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| 78 | return -ENOMEM; |
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| 79 | }; |
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| 80 | |||
| 81 | int kolibri_framebuffer_init(void *param) |
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| 82 | { |
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| 83 | struct intel_framebuffer *intel_fb = param; |
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| 84 | struct kos_framebuffer *kfb; |
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| 85 | addr_t dummy_table; |
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| 86 | addr_t *pt_addr = NULL; |
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| 87 | int pde, pte; |
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| 88 | |||
| 89 | kfb = kzalloc(sizeof(struct kos_framebuffer),0); |
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| 90 | if(kfb == NULL) |
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| 91 | goto err_0; |
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| 92 | |||
| 93 | kfb->private = intel_fb; |
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| 94 | |||
| 95 | for(pde = 0; pde < 8; pde++) |
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| 96 | { |
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| 97 | dummy_table = AllocPage(); |
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| 98 | if(dummy_table == 0) |
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| 99 | goto err_1; |
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| 100 | |||
| 101 | kfb->pde[pde] = dummy_table|PG_UW; |
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| 102 | |||
| 103 | pt_addr = kmap_atomic((struct page*)dummy_table); |
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| 104 | for(pte = 0; pte < 1024; pte++) |
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| 105 | pt_addr[pte] = dummy_fb_page|PG_UW; |
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| 106 | kunmap_atomic(pt_addr); |
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| 107 | }; |
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| 108 | |||
| 109 | intel_fb->private = kfb; |
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| 110 | |||
| 111 | return 0; |
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| 112 | err_1: |
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| 113 | for(pte = 0; pte < pde; pte++) |
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| 114 | FreePage(kfb->pde[pte]); |
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| 115 | kfree(kfb); |
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| 116 | err_0: |
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| 117 | return -ENOMEM; |
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| 118 | }; |
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| 119 | |||
| 120 | void kolibri_framebuffer_update(struct drm_device *dev, struct kos_framebuffer *kfb) |
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| 121 | { |
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| 122 | struct drm_i915_private *dev_priv = dev->dev_private; |
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| 123 | struct intel_framebuffer *intel_fb = kfb->private; |
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| 124 | addr_t *pt_addr = NULL; |
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| 125 | int pte = 0; |
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| 126 | int pde = 0; |
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| 127 | int num_pages; |
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| 128 | addr_t pfn; |
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| 129 | |||
| 130 | num_pages = intel_fb->obj->base.size/4096; |
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| 131 | pfn = dev_priv->gtt.mappable_base + i915_gem_obj_ggtt_offset(intel_fb->obj); |
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| 132 | |||
| 133 | while(num_pages) |
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| 134 | { |
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| 135 | if (pt_addr == NULL) |
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| 136 | { |
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| 137 | addr_t pt = kfb->pde[pde] & 0xFFFFF000; |
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| 138 | pde++; |
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| 139 | pt_addr = kmap_atomic((struct page*)pt); |
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| 140 | } |
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| 141 | pt_addr[pte] = pfn|PG_UW|PG_WRITEC; |
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| 142 | pfn+= 4096; |
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| 143 | num_pages--; |
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| 144 | if (++pte == 1024) |
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| 145 | { |
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| 146 | kunmap_atomic(pt_addr); |
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| 147 | pt_addr = NULL; |
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| 148 | if (pde == 8) |
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| 149 | break; |
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| 150 | pte = 0; |
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| 151 | } |
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| 152 | } |
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| 153 | |||
| 154 | if(pt_addr) |
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| 155 | { |
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| 156 | for(; pte < 1024; pte++) |
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| 157 | pt_addr[pte] = dummy_fb_page|PG_UW; |
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| 158 | kunmap_atomic(pt_addr); |
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| 159 | }; |
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| 160 | |||
| 161 | for(; pde < 8; pde++) |
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| 162 | { |
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| 163 | addr_t pt = kfb->pde[pde] & 0xFFFFF000; |
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| 164 | pt_addr = kmap_atomic((struct page*)pt); |
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| 165 | for(pte = 0; pte < 1024; pte++) |
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| 166 | pt_addr[pte] = dummy_fb_page|PG_UW; |
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| 167 | kunmap_atomic(pt_addr); |
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| 168 | } |
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| 169 | }; |
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| 170 | |||
| 171 | void set_fake_framebuffer() |
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| 172 | { |
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| 173 | sysSetFramebuffer(fake_fb); |
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| 174 | } |