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Rev | Author | Line No. | Line |
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4075 | Serge | 1 | /************************************************************************** |
2 | * |
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3 | * Copyright (c) 2007-2009 VMware, Inc., Palo Alto, CA., USA |
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4 | * All Rights Reserved. |
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5 | * |
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6 | * Permission is hereby granted, free of charge, to any person obtaining a |
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7 | * copy of this software and associated documentation files (the |
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8 | * "Software"), to deal in the Software without restriction, including |
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9 | * without limitation the rights to use, copy, modify, merge, publish, |
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10 | * distribute, sub license, and/or sell copies of the Software, and to |
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11 | * permit persons to whom the Software is furnished to do so, subject to |
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12 | * the following conditions: |
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13 | * |
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14 | * The above copyright notice and this permission notice (including the |
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15 | * next paragraph) shall be included in all copies or substantial portions |
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16 | * of the Software. |
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17 | * |
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18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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20 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
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21 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, |
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22 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
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23 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
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24 | * USE OR OTHER DEALINGS IN THE SOFTWARE. |
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25 | * |
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26 | **************************************************************************/ |
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27 | /* |
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28 | * Authors: Thomas Hellstrom |
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29 | */ |
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5078 | serge | 30 | #define iowrite32(v, addr) writel((v), (addr)) |
31 | #define ioread32(addr) readl(addr) |
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4075 | Serge | 32 | |
33 | #include |
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34 | #include |
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4112 | Serge | 35 | #include |
5078 | serge | 36 | //#include |
37 | //#include |
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4075 | Serge | 38 | #include |
39 | #include |
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5078 | serge | 40 | //#include |
4075 | Serge | 41 | #include |
42 | |||
5078 | serge | 43 | #define __pgprot(x) ((pgprot_t) { (x) } ) |
44 | #define PAGE_KERNEL __pgprot(3) |
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45 | |||
46 | void *vmap(struct page **pages, unsigned int count, |
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47 | unsigned long flags, pgprot_t prot); |
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48 | |||
4075 | Serge | 49 | void ttm_bo_free_old_node(struct ttm_buffer_object *bo) |
50 | { |
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51 | ttm_bo_mem_put(bo, &bo->mem); |
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52 | } |
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53 | |||
54 | int ttm_bo_move_ttm(struct ttm_buffer_object *bo, |
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55 | bool evict, |
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56 | bool no_wait_gpu, struct ttm_mem_reg *new_mem) |
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57 | { |
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58 | struct ttm_tt *ttm = bo->ttm; |
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59 | struct ttm_mem_reg *old_mem = &bo->mem; |
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60 | int ret; |
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61 | |||
62 | if (old_mem->mem_type != TTM_PL_SYSTEM) { |
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63 | ttm_tt_unbind(ttm); |
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64 | ttm_bo_free_old_node(bo); |
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65 | ttm_flag_masked(&old_mem->placement, TTM_PL_FLAG_SYSTEM, |
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66 | TTM_PL_MASK_MEM); |
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67 | old_mem->mem_type = TTM_PL_SYSTEM; |
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68 | } |
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69 | |||
70 | ret = ttm_tt_set_placement_caching(ttm, new_mem->placement); |
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71 | if (unlikely(ret != 0)) |
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72 | return ret; |
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73 | |||
74 | if (new_mem->mem_type != TTM_PL_SYSTEM) { |
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75 | ret = ttm_tt_bind(ttm, new_mem); |
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76 | if (unlikely(ret != 0)) |
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77 | return ret; |
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78 | } |
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79 | |||
80 | *old_mem = *new_mem; |
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81 | new_mem->mm_node = NULL; |
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82 | |||
83 | return 0; |
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84 | } |
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85 | EXPORT_SYMBOL(ttm_bo_move_ttm); |
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86 | |||
87 | int ttm_mem_io_lock(struct ttm_mem_type_manager *man, bool interruptible) |
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88 | { |
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89 | if (likely(man->io_reserve_fastpath)) |
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90 | return 0; |
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91 | |||
92 | if (interruptible) |
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93 | return mutex_lock_interruptible(&man->io_reserve_mutex); |
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94 | |||
95 | mutex_lock(&man->io_reserve_mutex); |
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96 | return 0; |
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97 | } |
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98 | EXPORT_SYMBOL(ttm_mem_io_lock); |
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99 | |||
100 | void ttm_mem_io_unlock(struct ttm_mem_type_manager *man) |
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101 | { |
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102 | if (likely(man->io_reserve_fastpath)) |
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103 | return; |
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104 | |||
105 | mutex_unlock(&man->io_reserve_mutex); |
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106 | } |
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107 | EXPORT_SYMBOL(ttm_mem_io_unlock); |
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108 | |||
109 | static int ttm_mem_io_evict(struct ttm_mem_type_manager *man) |
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110 | { |
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111 | struct ttm_buffer_object *bo; |
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112 | |||
113 | if (!man->use_io_reserve_lru || list_empty(&man->io_reserve_lru)) |
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114 | return -EAGAIN; |
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115 | |||
116 | bo = list_first_entry(&man->io_reserve_lru, |
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117 | struct ttm_buffer_object, |
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118 | io_reserve_lru); |
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119 | list_del_init(&bo->io_reserve_lru); |
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120 | ttm_bo_unmap_virtual_locked(bo); |
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121 | |||
122 | return 0; |
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123 | } |
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124 | |||
125 | |||
126 | int ttm_mem_io_reserve(struct ttm_bo_device *bdev, |
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127 | struct ttm_mem_reg *mem) |
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128 | { |
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129 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; |
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130 | int ret = 0; |
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131 | |||
132 | if (!bdev->driver->io_mem_reserve) |
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133 | return 0; |
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134 | if (likely(man->io_reserve_fastpath)) |
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135 | return bdev->driver->io_mem_reserve(bdev, mem); |
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136 | |||
137 | if (bdev->driver->io_mem_reserve && |
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138 | mem->bus.io_reserved_count++ == 0) { |
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139 | retry: |
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140 | ret = bdev->driver->io_mem_reserve(bdev, mem); |
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141 | if (ret == -EAGAIN) { |
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142 | ret = ttm_mem_io_evict(man); |
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143 | if (ret == 0) |
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144 | goto retry; |
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145 | } |
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146 | } |
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147 | return ret; |
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148 | } |
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149 | EXPORT_SYMBOL(ttm_mem_io_reserve); |
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150 | |||
151 | void ttm_mem_io_free(struct ttm_bo_device *bdev, |
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152 | struct ttm_mem_reg *mem) |
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153 | { |
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154 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; |
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155 | |||
156 | if (likely(man->io_reserve_fastpath)) |
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157 | return; |
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158 | |||
159 | if (bdev->driver->io_mem_reserve && |
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160 | --mem->bus.io_reserved_count == 0 && |
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161 | bdev->driver->io_mem_free) |
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162 | bdev->driver->io_mem_free(bdev, mem); |
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163 | |||
164 | } |
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165 | EXPORT_SYMBOL(ttm_mem_io_free); |
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166 | |||
5078 | serge | 167 | #if 0 |
4075 | Serge | 168 | int ttm_mem_io_reserve_vm(struct ttm_buffer_object *bo) |
169 | { |
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170 | struct ttm_mem_reg *mem = &bo->mem; |
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171 | int ret; |
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172 | |||
173 | if (!mem->bus.io_reserved_vm) { |
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174 | struct ttm_mem_type_manager *man = |
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175 | &bo->bdev->man[mem->mem_type]; |
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176 | |||
177 | ret = ttm_mem_io_reserve(bo->bdev, mem); |
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178 | if (unlikely(ret != 0)) |
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179 | return ret; |
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180 | mem->bus.io_reserved_vm = true; |
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181 | if (man->use_io_reserve_lru) |
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182 | list_add_tail(&bo->io_reserve_lru, |
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183 | &man->io_reserve_lru); |
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184 | } |
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185 | return 0; |
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186 | } |
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5078 | serge | 187 | #endif |
4075 | Serge | 188 | |
189 | void ttm_mem_io_free_vm(struct ttm_buffer_object *bo) |
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190 | { |
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191 | struct ttm_mem_reg *mem = &bo->mem; |
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192 | |||
193 | if (mem->bus.io_reserved_vm) { |
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194 | mem->bus.io_reserved_vm = false; |
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195 | list_del_init(&bo->io_reserve_lru); |
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196 | ttm_mem_io_free(bo->bdev, mem); |
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197 | } |
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198 | } |
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199 | |||
4569 | Serge | 200 | static int ttm_mem_reg_ioremap(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem, |
4075 | Serge | 201 | void **virtual) |
202 | { |
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203 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; |
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204 | int ret; |
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205 | void *addr; |
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206 | |||
207 | *virtual = NULL; |
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208 | (void) ttm_mem_io_lock(man, false); |
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209 | ret = ttm_mem_io_reserve(bdev, mem); |
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210 | ttm_mem_io_unlock(man); |
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211 | if (ret || !mem->bus.is_iomem) |
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212 | return ret; |
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213 | |||
214 | if (mem->bus.addr) { |
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215 | addr = mem->bus.addr; |
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216 | } else { |
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217 | if (mem->placement & TTM_PL_FLAG_WC) |
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218 | addr = ioremap_wc(mem->bus.base + mem->bus.offset, mem->bus.size); |
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219 | else |
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5078 | serge | 220 | addr = ioremap(mem->bus.base + mem->bus.offset, mem->bus.size); |
4075 | Serge | 221 | if (!addr) { |
222 | (void) ttm_mem_io_lock(man, false); |
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223 | ttm_mem_io_free(bdev, mem); |
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224 | ttm_mem_io_unlock(man); |
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225 | return -ENOMEM; |
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226 | } |
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227 | } |
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228 | *virtual = addr; |
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229 | return 0; |
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230 | } |
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231 | |||
4569 | Serge | 232 | static void ttm_mem_reg_iounmap(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem, |
4075 | Serge | 233 | void *virtual) |
234 | { |
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235 | struct ttm_mem_type_manager *man; |
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236 | |||
237 | man = &bdev->man[mem->mem_type]; |
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238 | |||
239 | if (virtual && mem->bus.addr == NULL) |
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240 | iounmap(virtual); |
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241 | (void) ttm_mem_io_lock(man, false); |
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242 | ttm_mem_io_free(bdev, mem); |
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243 | ttm_mem_io_unlock(man); |
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244 | } |
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245 | |||
246 | static int ttm_copy_io_page(void *dst, void *src, unsigned long page) |
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247 | { |
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248 | uint32_t *dstP = |
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249 | (uint32_t *) ((unsigned long)dst + (page << PAGE_SHIFT)); |
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250 | uint32_t *srcP = |
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251 | (uint32_t *) ((unsigned long)src + (page << PAGE_SHIFT)); |
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252 | |||
253 | int i; |
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254 | for (i = 0; i < PAGE_SIZE / sizeof(uint32_t); ++i) |
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255 | iowrite32(ioread32(srcP++), dstP++); |
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256 | return 0; |
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257 | } |
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258 | |||
259 | static int ttm_copy_io_ttm_page(struct ttm_tt *ttm, void *src, |
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260 | unsigned long page, |
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261 | pgprot_t prot) |
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262 | { |
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263 | struct page *d = ttm->pages[page]; |
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264 | void *dst; |
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265 | |||
266 | if (!d) |
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267 | return -ENOMEM; |
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268 | |||
269 | src = (void *)((unsigned long)src + (page << PAGE_SHIFT)); |
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270 | |||
5078 | serge | 271 | dst = (void*)MapIoMem((addr_t)d, 4096, PG_SW); |
272 | |||
4075 | Serge | 273 | if (!dst) |
274 | return -ENOMEM; |
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275 | |||
5078 | serge | 276 | memcpy(dst, src, PAGE_SIZE); |
4075 | Serge | 277 | |
5078 | serge | 278 | FreeKernelSpace(dst); |
4075 | Serge | 279 | |
280 | return 0; |
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281 | } |
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282 | |||
283 | static int ttm_copy_ttm_io_page(struct ttm_tt *ttm, void *dst, |
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284 | unsigned long page, |
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285 | pgprot_t prot) |
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286 | { |
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287 | struct page *s = ttm->pages[page]; |
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288 | void *src; |
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289 | |||
290 | if (!s) |
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291 | return -ENOMEM; |
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292 | |||
293 | dst = (void *)((unsigned long)dst + (page << PAGE_SHIFT)); |
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5078 | serge | 294 | |
295 | src = (void*)MapIoMem((addr_t)s, 4096, PG_SW); |
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296 | |||
4075 | Serge | 297 | if (!src) |
298 | return -ENOMEM; |
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299 | |||
5078 | serge | 300 | memcpy(dst, src, PAGE_SIZE); |
4075 | Serge | 301 | |
5078 | serge | 302 | FreeKernelSpace(src); |
4075 | Serge | 303 | |
304 | return 0; |
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305 | } |
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306 | |||
307 | int ttm_bo_move_memcpy(struct ttm_buffer_object *bo, |
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308 | bool evict, bool no_wait_gpu, |
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309 | struct ttm_mem_reg *new_mem) |
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310 | { |
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311 | struct ttm_bo_device *bdev = bo->bdev; |
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312 | struct ttm_mem_type_manager *man = &bdev->man[new_mem->mem_type]; |
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313 | struct ttm_tt *ttm = bo->ttm; |
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314 | struct ttm_mem_reg *old_mem = &bo->mem; |
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315 | struct ttm_mem_reg old_copy = *old_mem; |
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316 | void *old_iomap; |
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317 | void *new_iomap; |
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318 | int ret; |
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319 | unsigned long i; |
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320 | unsigned long page; |
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321 | unsigned long add = 0; |
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322 | int dir; |
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323 | |||
324 | ret = ttm_mem_reg_ioremap(bdev, old_mem, &old_iomap); |
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325 | if (ret) |
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326 | return ret; |
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327 | ret = ttm_mem_reg_ioremap(bdev, new_mem, &new_iomap); |
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328 | if (ret) |
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329 | goto out; |
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330 | |||
4569 | Serge | 331 | /* |
332 | * Single TTM move. NOP. |
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333 | */ |
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4075 | Serge | 334 | if (old_iomap == NULL && new_iomap == NULL) |
335 | goto out2; |
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4569 | Serge | 336 | |
337 | /* |
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338 | * Don't move nonexistent data. Clear destination instead. |
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339 | */ |
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5078 | serge | 340 | if (old_iomap == NULL && |
341 | (ttm == NULL || (ttm->state == tt_unpopulated && |
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342 | !(ttm->page_flags & TTM_PAGE_FLAG_SWAPPED)))) { |
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343 | memset(new_iomap, 0, new_mem->num_pages*PAGE_SIZE); |
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4075 | Serge | 344 | goto out2; |
5078 | serge | 345 | } |
4075 | Serge | 346 | |
4569 | Serge | 347 | /* |
348 | * TTM might be null for moves within the same region. |
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349 | */ |
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350 | if (ttm && ttm->state == tt_unpopulated) { |
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4075 | Serge | 351 | ret = ttm->bdev->driver->ttm_tt_populate(ttm); |
4569 | Serge | 352 | if (ret) |
4075 | Serge | 353 | goto out1; |
354 | } |
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355 | |||
356 | add = 0; |
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357 | dir = 1; |
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358 | |||
359 | if ((old_mem->mem_type == new_mem->mem_type) && |
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360 | (new_mem->start < old_mem->start + old_mem->size)) { |
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361 | dir = -1; |
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362 | add = new_mem->num_pages - 1; |
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363 | } |
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364 | |||
365 | for (i = 0; i < new_mem->num_pages; ++i) { |
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366 | page = i * dir + add; |
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367 | if (old_iomap == NULL) { |
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368 | pgprot_t prot = ttm_io_prot(old_mem->placement, |
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369 | PAGE_KERNEL); |
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370 | ret = ttm_copy_ttm_io_page(ttm, new_iomap, page, |
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371 | prot); |
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372 | } else if (new_iomap == NULL) { |
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373 | pgprot_t prot = ttm_io_prot(new_mem->placement, |
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374 | PAGE_KERNEL); |
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375 | ret = ttm_copy_io_ttm_page(ttm, old_iomap, page, |
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376 | prot); |
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377 | } else |
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378 | ret = ttm_copy_io_page(new_iomap, old_iomap, page); |
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4569 | Serge | 379 | if (ret) |
4075 | Serge | 380 | goto out1; |
381 | } |
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382 | mb(); |
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383 | out2: |
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384 | old_copy = *old_mem; |
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385 | *old_mem = *new_mem; |
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386 | new_mem->mm_node = NULL; |
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387 | |||
388 | if ((man->flags & TTM_MEMTYPE_FLAG_FIXED) && (ttm != NULL)) { |
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389 | ttm_tt_unbind(ttm); |
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390 | ttm_tt_destroy(ttm); |
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391 | bo->ttm = NULL; |
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392 | } |
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393 | |||
394 | out1: |
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395 | ttm_mem_reg_iounmap(bdev, old_mem, new_iomap); |
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396 | out: |
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397 | ttm_mem_reg_iounmap(bdev, &old_copy, old_iomap); |
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4569 | Serge | 398 | |
399 | /* |
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400 | * On error, keep the mm node! |
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401 | */ |
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402 | if (!ret) |
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4075 | Serge | 403 | ttm_bo_mem_put(bo, &old_copy); |
404 | return ret; |
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405 | } |
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406 | EXPORT_SYMBOL(ttm_bo_move_memcpy); |
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407 | |||
408 | static void ttm_transfered_destroy(struct ttm_buffer_object *bo) |
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409 | { |
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410 | kfree(bo); |
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411 | } |
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412 | |||
413 | /** |
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414 | * ttm_buffer_object_transfer |
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415 | * |
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416 | * @bo: A pointer to a struct ttm_buffer_object. |
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417 | * @new_obj: A pointer to a pointer to a newly created ttm_buffer_object, |
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418 | * holding the data of @bo with the old placement. |
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419 | * |
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420 | * This is a utility function that may be called after an accelerated move |
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421 | * has been scheduled. A new buffer object is created as a placeholder for |
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422 | * the old data while it's being copied. When that buffer object is idle, |
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423 | * it can be destroyed, releasing the space of the old placement. |
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424 | * Returns: |
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425 | * !0: Failure. |
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426 | */ |
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427 | |||
428 | static int ttm_buffer_object_transfer(struct ttm_buffer_object *bo, |
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429 | struct ttm_buffer_object **new_obj) |
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430 | { |
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431 | struct ttm_buffer_object *fbo; |
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432 | struct ttm_bo_device *bdev = bo->bdev; |
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433 | struct ttm_bo_driver *driver = bdev->driver; |
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434 | int ret; |
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435 | |||
436 | fbo = kmalloc(sizeof(*fbo), GFP_KERNEL); |
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437 | if (!fbo) |
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438 | return -ENOMEM; |
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439 | |||
440 | *fbo = *bo; |
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441 | |||
442 | /** |
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443 | * Fix up members that we shouldn't copy directly: |
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444 | * TODO: Explicit member copy would probably be better here. |
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445 | */ |
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446 | |||
447 | INIT_LIST_HEAD(&fbo->ddestroy); |
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448 | INIT_LIST_HEAD(&fbo->lru); |
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449 | INIT_LIST_HEAD(&fbo->swap); |
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450 | INIT_LIST_HEAD(&fbo->io_reserve_lru); |
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4112 | Serge | 451 | drm_vma_node_reset(&fbo->vma_node); |
4075 | Serge | 452 | atomic_set(&fbo->cpu_writers, 0); |
453 | |||
454 | spin_lock(&bdev->fence_lock); |
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455 | if (bo->sync_obj) |
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456 | fbo->sync_obj = driver->sync_obj_ref(bo->sync_obj); |
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457 | else |
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458 | fbo->sync_obj = NULL; |
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459 | spin_unlock(&bdev->fence_lock); |
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460 | kref_init(&fbo->list_kref); |
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461 | kref_init(&fbo->kref); |
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462 | fbo->destroy = &ttm_transfered_destroy; |
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463 | fbo->acc_size = 0; |
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464 | fbo->resv = &fbo->ttm_resv; |
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465 | reservation_object_init(fbo->resv); |
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466 | ret = ww_mutex_trylock(&fbo->resv->lock); |
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467 | WARN_ON(!ret); |
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468 | |||
469 | *new_obj = fbo; |
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470 | return 0; |
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471 | } |
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472 | |||
473 | pgprot_t ttm_io_prot(uint32_t caching_flags, pgprot_t tmp) |
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474 | { |
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475 | return tmp; |
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476 | } |
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477 | EXPORT_SYMBOL(ttm_io_prot); |
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478 | |||
479 | static int ttm_bo_ioremap(struct ttm_buffer_object *bo, |
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480 | unsigned long offset, |
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481 | unsigned long size, |
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482 | struct ttm_bo_kmap_obj *map) |
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483 | { |
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484 | struct ttm_mem_reg *mem = &bo->mem; |
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485 | |||
486 | if (bo->mem.bus.addr) { |
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487 | map->bo_kmap_type = ttm_bo_map_premapped; |
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488 | map->virtual = (void *)(((u8 *)bo->mem.bus.addr) + offset); |
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489 | } else { |
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490 | map->bo_kmap_type = ttm_bo_map_iomap; |
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491 | if (mem->placement & TTM_PL_FLAG_WC) |
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492 | map->virtual = ioremap_wc(bo->mem.bus.base + bo->mem.bus.offset + offset, |
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493 | size); |
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494 | else |
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5078 | serge | 495 | map->virtual = ioremap(bo->mem.bus.base + bo->mem.bus.offset + offset, |
4075 | Serge | 496 | size); |
497 | } |
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498 | return (!map->virtual) ? -ENOMEM : 0; |
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499 | } |
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500 | |||
501 | static int ttm_bo_kmap_ttm(struct ttm_buffer_object *bo, |
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502 | unsigned long start_page, |
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503 | unsigned long num_pages, |
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504 | struct ttm_bo_kmap_obj *map) |
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505 | { |
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506 | struct ttm_mem_reg *mem = &bo->mem; pgprot_t prot; |
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507 | struct ttm_tt *ttm = bo->ttm; |
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508 | int ret; |
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509 | |||
510 | BUG_ON(!ttm); |
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511 | |||
512 | if (ttm->state == tt_unpopulated) { |
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513 | ret = ttm->bdev->driver->ttm_tt_populate(ttm); |
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514 | if (ret) |
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515 | return ret; |
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516 | } |
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517 | |||
518 | if (num_pages == 1 && (mem->placement & TTM_PL_FLAG_CACHED)) { |
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519 | /* |
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520 | * We're mapping a single page, and the desired |
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521 | * page protection is consistent with the bo. |
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522 | */ |
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523 | |||
524 | map->bo_kmap_type = ttm_bo_map_kmap; |
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525 | map->page = ttm->pages[start_page]; |
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5078 | serge | 526 | map->virtual = (void*)MapIoMem(page_to_phys(map->page), 4096, PG_SW); |
4075 | Serge | 527 | } else { |
528 | /* |
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529 | * We need to use vmap to get the desired page protection |
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530 | * or to make the buffer object look contiguous. |
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531 | */ |
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532 | prot = (mem->placement & TTM_PL_FLAG_CACHED) ? |
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533 | PAGE_KERNEL : |
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534 | ttm_io_prot(mem->placement, PAGE_KERNEL); |
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535 | map->bo_kmap_type = ttm_bo_map_vmap; |
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536 | map->virtual = vmap(ttm->pages + start_page, num_pages, |
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537 | 0, prot); |
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538 | } |
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539 | return (!map->virtual) ? -ENOMEM : 0; |
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540 | } |
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541 | |||
542 | int ttm_bo_kmap(struct ttm_buffer_object *bo, |
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543 | unsigned long start_page, unsigned long num_pages, |
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544 | struct ttm_bo_kmap_obj *map) |
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545 | { |
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546 | struct ttm_mem_type_manager *man = |
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547 | &bo->bdev->man[bo->mem.mem_type]; |
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548 | unsigned long offset, size; |
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549 | int ret; |
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550 | |||
551 | BUG_ON(!list_empty(&bo->swap)); |
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552 | map->virtual = NULL; |
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553 | map->bo = bo; |
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554 | if (num_pages > bo->num_pages) |
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555 | return -EINVAL; |
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556 | if (start_page > bo->num_pages) |
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557 | return -EINVAL; |
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558 | #if 0 |
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4569 | Serge | 559 | if (num_pages > 1 && !capable(CAP_SYS_ADMIN)) |
4075 | Serge | 560 | return -EPERM; |
561 | #endif |
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562 | (void) ttm_mem_io_lock(man, false); |
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563 | ret = ttm_mem_io_reserve(bo->bdev, &bo->mem); |
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564 | ttm_mem_io_unlock(man); |
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565 | if (ret) |
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566 | return ret; |
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567 | if (!bo->mem.bus.is_iomem) { |
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568 | return ttm_bo_kmap_ttm(bo, start_page, num_pages, map); |
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569 | } else { |
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570 | offset = start_page << PAGE_SHIFT; |
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571 | size = num_pages << PAGE_SHIFT; |
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572 | return ttm_bo_ioremap(bo, offset, size, map); |
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573 | } |
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574 | } |
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575 | EXPORT_SYMBOL(ttm_bo_kmap); |
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576 | |||
577 | void ttm_bo_kunmap(struct ttm_bo_kmap_obj *map) |
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578 | { |
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579 | struct ttm_buffer_object *bo = map->bo; |
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580 | struct ttm_mem_type_manager *man = |
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581 | &bo->bdev->man[bo->mem.mem_type]; |
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582 | |||
583 | if (!map->virtual) |
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584 | return; |
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585 | switch (map->bo_kmap_type) { |
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586 | case ttm_bo_map_iomap: |
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587 | iounmap(map->virtual); |
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588 | break; |
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589 | case ttm_bo_map_vmap: |
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590 | case ttm_bo_map_kmap: |
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5078 | serge | 591 | FreeKernelSpace(map->virtual); |
4075 | Serge | 592 | break; |
593 | case ttm_bo_map_premapped: |
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594 | break; |
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595 | default: |
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596 | BUG(); |
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597 | } |
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598 | (void) ttm_mem_io_lock(man, false); |
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599 | ttm_mem_io_free(map->bo->bdev, &map->bo->mem); |
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600 | ttm_mem_io_unlock(man); |
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601 | map->virtual = NULL; |
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602 | map->page = NULL; |
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603 | } |
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604 | EXPORT_SYMBOL(ttm_bo_kunmap); |
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605 | |||
606 | int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo, |
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607 | void *sync_obj, |
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608 | bool evict, |
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609 | bool no_wait_gpu, |
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610 | struct ttm_mem_reg *new_mem) |
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611 | { |
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612 | struct ttm_bo_device *bdev = bo->bdev; |
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613 | struct ttm_bo_driver *driver = bdev->driver; |
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614 | struct ttm_mem_type_manager *man = &bdev->man[new_mem->mem_type]; |
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615 | struct ttm_mem_reg *old_mem = &bo->mem; |
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616 | int ret; |
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617 | struct ttm_buffer_object *ghost_obj; |
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618 | void *tmp_obj = NULL; |
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619 | |||
620 | spin_lock(&bdev->fence_lock); |
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621 | if (bo->sync_obj) { |
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622 | tmp_obj = bo->sync_obj; |
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623 | bo->sync_obj = NULL; |
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624 | } |
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625 | bo->sync_obj = driver->sync_obj_ref(sync_obj); |
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626 | if (evict) { |
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627 | ret = ttm_bo_wait(bo, false, false, false); |
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628 | spin_unlock(&bdev->fence_lock); |
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629 | if (tmp_obj) |
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630 | driver->sync_obj_unref(&tmp_obj); |
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631 | if (ret) |
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632 | return ret; |
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633 | |||
634 | if ((man->flags & TTM_MEMTYPE_FLAG_FIXED) && |
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635 | (bo->ttm != NULL)) { |
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636 | ttm_tt_unbind(bo->ttm); |
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637 | ttm_tt_destroy(bo->ttm); |
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638 | bo->ttm = NULL; |
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639 | } |
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640 | ttm_bo_free_old_node(bo); |
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641 | } else { |
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642 | /** |
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643 | * This should help pipeline ordinary buffer moves. |
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644 | * |
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645 | * Hang old buffer memory on a new buffer object, |
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646 | * and leave it to be released when the GPU |
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647 | * operation has completed. |
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648 | */ |
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649 | |||
650 | set_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags); |
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651 | spin_unlock(&bdev->fence_lock); |
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652 | if (tmp_obj) |
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653 | driver->sync_obj_unref(&tmp_obj); |
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654 | |||
655 | ret = ttm_buffer_object_transfer(bo, &ghost_obj); |
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656 | if (ret) |
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657 | return ret; |
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658 | |||
659 | /** |
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660 | * If we're not moving to fixed memory, the TTM object |
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661 | * needs to stay alive. Otherwhise hang it on the ghost |
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662 | * bo to be unbound and destroyed. |
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663 | */ |
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664 | |||
665 | if (!(man->flags & TTM_MEMTYPE_FLAG_FIXED)) |
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666 | ghost_obj->ttm = NULL; |
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667 | else |
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668 | bo->ttm = NULL; |
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669 | |||
670 | ttm_bo_unreserve(ghost_obj); |
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671 | ttm_bo_unref(&ghost_obj); |
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672 | } |
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673 | |||
674 | *old_mem = *new_mem; |
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675 | new_mem->mm_node = NULL; |
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676 | |||
677 | return 0; |
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678 | } |
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679 | EXPORT_SYMBOL(ttm_bo_move_accel_cleanup); |
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5078 | serge | 680 | |
681 | |||
682 | void *vmap(struct page **pages, unsigned int count, |
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683 | unsigned long flags, pgprot_t prot) |
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684 | { |
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685 | void *vaddr; |
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686 | char *tmp; |
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687 | int i; |
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688 | |||
689 | vaddr = AllocKernelSpace(count << 12); |
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690 | if(vaddr == NULL) |
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691 | return NULL; |
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692 | |||
693 | for(i = 0, tmp = vaddr; i < count; i++) |
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694 | { |
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695 | MapPage(tmp, page_to_phys(pages[i]), PG_SW); |
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696 | tmp+= 4096; |
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697 | }; |
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698 | |||
699 | return vaddr; |
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700 | };>><>><>><>>>><>><>>><>><> |
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701 |