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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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30 | |||
31 | #include |
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32 | #include |
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4112 | Serge | 33 | #include |
6296 | serge | 34 | #include |
5078 | serge | 35 | //#include |
4075 | Serge | 36 | #include |
37 | #include |
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6296 | serge | 38 | #include |
4075 | Serge | 39 | #include |
40 | |||
5078 | serge | 41 | #define __pgprot(x) ((pgprot_t) { (x) } ) |
42 | |||
43 | void *vmap(struct page **pages, unsigned int count, |
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44 | unsigned long flags, pgprot_t prot); |
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45 | |||
4075 | Serge | 46 | void ttm_bo_free_old_node(struct ttm_buffer_object *bo) |
47 | { |
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48 | ttm_bo_mem_put(bo, &bo->mem); |
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49 | } |
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50 | |||
51 | int ttm_bo_move_ttm(struct ttm_buffer_object *bo, |
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52 | bool evict, |
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53 | bool no_wait_gpu, struct ttm_mem_reg *new_mem) |
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54 | { |
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55 | struct ttm_tt *ttm = bo->ttm; |
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56 | struct ttm_mem_reg *old_mem = &bo->mem; |
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57 | int ret; |
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58 | |||
59 | if (old_mem->mem_type != TTM_PL_SYSTEM) { |
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60 | ttm_tt_unbind(ttm); |
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61 | ttm_bo_free_old_node(bo); |
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62 | ttm_flag_masked(&old_mem->placement, TTM_PL_FLAG_SYSTEM, |
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63 | TTM_PL_MASK_MEM); |
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64 | old_mem->mem_type = TTM_PL_SYSTEM; |
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65 | } |
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66 | |||
67 | ret = ttm_tt_set_placement_caching(ttm, new_mem->placement); |
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68 | if (unlikely(ret != 0)) |
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69 | return ret; |
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70 | |||
71 | if (new_mem->mem_type != TTM_PL_SYSTEM) { |
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72 | ret = ttm_tt_bind(ttm, new_mem); |
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73 | if (unlikely(ret != 0)) |
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74 | return ret; |
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75 | } |
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76 | |||
77 | *old_mem = *new_mem; |
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78 | new_mem->mm_node = NULL; |
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79 | |||
80 | return 0; |
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81 | } |
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82 | EXPORT_SYMBOL(ttm_bo_move_ttm); |
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83 | |||
84 | int ttm_mem_io_lock(struct ttm_mem_type_manager *man, bool interruptible) |
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85 | { |
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86 | if (likely(man->io_reserve_fastpath)) |
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87 | return 0; |
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88 | |||
89 | if (interruptible) |
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90 | return mutex_lock_interruptible(&man->io_reserve_mutex); |
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91 | |||
92 | mutex_lock(&man->io_reserve_mutex); |
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93 | return 0; |
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94 | } |
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95 | EXPORT_SYMBOL(ttm_mem_io_lock); |
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96 | |||
97 | void ttm_mem_io_unlock(struct ttm_mem_type_manager *man) |
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98 | { |
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99 | if (likely(man->io_reserve_fastpath)) |
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100 | return; |
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101 | |||
102 | mutex_unlock(&man->io_reserve_mutex); |
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103 | } |
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104 | EXPORT_SYMBOL(ttm_mem_io_unlock); |
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105 | |||
106 | static int ttm_mem_io_evict(struct ttm_mem_type_manager *man) |
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107 | { |
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108 | struct ttm_buffer_object *bo; |
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109 | |||
110 | if (!man->use_io_reserve_lru || list_empty(&man->io_reserve_lru)) |
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111 | return -EAGAIN; |
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112 | |||
113 | bo = list_first_entry(&man->io_reserve_lru, |
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114 | struct ttm_buffer_object, |
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115 | io_reserve_lru); |
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116 | list_del_init(&bo->io_reserve_lru); |
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117 | ttm_bo_unmap_virtual_locked(bo); |
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118 | |||
119 | return 0; |
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120 | } |
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121 | |||
122 | |||
123 | int ttm_mem_io_reserve(struct ttm_bo_device *bdev, |
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124 | struct ttm_mem_reg *mem) |
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125 | { |
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126 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; |
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127 | int ret = 0; |
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128 | |||
129 | if (!bdev->driver->io_mem_reserve) |
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130 | return 0; |
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131 | if (likely(man->io_reserve_fastpath)) |
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132 | return bdev->driver->io_mem_reserve(bdev, mem); |
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133 | |||
134 | if (bdev->driver->io_mem_reserve && |
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135 | mem->bus.io_reserved_count++ == 0) { |
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136 | retry: |
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137 | ret = bdev->driver->io_mem_reserve(bdev, mem); |
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138 | if (ret == -EAGAIN) { |
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139 | ret = ttm_mem_io_evict(man); |
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140 | if (ret == 0) |
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141 | goto retry; |
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142 | } |
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143 | } |
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144 | return ret; |
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145 | } |
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146 | EXPORT_SYMBOL(ttm_mem_io_reserve); |
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147 | |||
148 | void ttm_mem_io_free(struct ttm_bo_device *bdev, |
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149 | struct ttm_mem_reg *mem) |
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150 | { |
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151 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; |
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152 | |||
153 | if (likely(man->io_reserve_fastpath)) |
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154 | return; |
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155 | |||
156 | if (bdev->driver->io_mem_reserve && |
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157 | --mem->bus.io_reserved_count == 0 && |
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158 | bdev->driver->io_mem_free) |
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159 | bdev->driver->io_mem_free(bdev, mem); |
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160 | |||
161 | } |
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162 | EXPORT_SYMBOL(ttm_mem_io_free); |
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163 | |||
164 | int ttm_mem_io_reserve_vm(struct ttm_buffer_object *bo) |
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165 | { |
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166 | struct ttm_mem_reg *mem = &bo->mem; |
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167 | int ret; |
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168 | |||
169 | if (!mem->bus.io_reserved_vm) { |
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170 | struct ttm_mem_type_manager *man = |
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171 | &bo->bdev->man[mem->mem_type]; |
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172 | |||
173 | ret = ttm_mem_io_reserve(bo->bdev, mem); |
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174 | if (unlikely(ret != 0)) |
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175 | return ret; |
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176 | mem->bus.io_reserved_vm = true; |
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177 | if (man->use_io_reserve_lru) |
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178 | list_add_tail(&bo->io_reserve_lru, |
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179 | &man->io_reserve_lru); |
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180 | } |
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181 | return 0; |
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182 | } |
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183 | |||
184 | void ttm_mem_io_free_vm(struct ttm_buffer_object *bo) |
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185 | { |
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186 | struct ttm_mem_reg *mem = &bo->mem; |
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187 | |||
188 | if (mem->bus.io_reserved_vm) { |
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189 | mem->bus.io_reserved_vm = false; |
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190 | list_del_init(&bo->io_reserve_lru); |
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191 | ttm_mem_io_free(bo->bdev, mem); |
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192 | } |
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193 | } |
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194 | |||
4569 | Serge | 195 | static int ttm_mem_reg_ioremap(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem, |
4075 | Serge | 196 | void **virtual) |
197 | { |
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198 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; |
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199 | int ret; |
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200 | void *addr; |
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201 | |||
202 | *virtual = NULL; |
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203 | (void) ttm_mem_io_lock(man, false); |
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204 | ret = ttm_mem_io_reserve(bdev, mem); |
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205 | ttm_mem_io_unlock(man); |
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206 | if (ret || !mem->bus.is_iomem) |
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207 | return ret; |
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208 | |||
209 | if (mem->bus.addr) { |
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210 | addr = mem->bus.addr; |
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211 | } else { |
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212 | if (mem->placement & TTM_PL_FLAG_WC) |
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213 | addr = ioremap_wc(mem->bus.base + mem->bus.offset, mem->bus.size); |
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214 | else |
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6296 | serge | 215 | addr = ioremap_nocache(mem->bus.base + mem->bus.offset, mem->bus.size); |
4075 | Serge | 216 | if (!addr) { |
217 | (void) ttm_mem_io_lock(man, false); |
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218 | ttm_mem_io_free(bdev, mem); |
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219 | ttm_mem_io_unlock(man); |
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220 | return -ENOMEM; |
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221 | } |
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222 | } |
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223 | *virtual = addr; |
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224 | return 0; |
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225 | } |
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226 | |||
4569 | Serge | 227 | static void ttm_mem_reg_iounmap(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem, |
4075 | Serge | 228 | void *virtual) |
229 | { |
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230 | struct ttm_mem_type_manager *man; |
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231 | |||
232 | man = &bdev->man[mem->mem_type]; |
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233 | |||
234 | if (virtual && mem->bus.addr == NULL) |
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235 | iounmap(virtual); |
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236 | (void) ttm_mem_io_lock(man, false); |
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237 | ttm_mem_io_free(bdev, mem); |
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238 | ttm_mem_io_unlock(man); |
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239 | } |
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240 | |||
241 | static int ttm_copy_io_page(void *dst, void *src, unsigned long page) |
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242 | { |
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243 | uint32_t *dstP = |
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244 | (uint32_t *) ((unsigned long)dst + (page << PAGE_SHIFT)); |
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245 | uint32_t *srcP = |
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246 | (uint32_t *) ((unsigned long)src + (page << PAGE_SHIFT)); |
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247 | |||
248 | int i; |
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249 | for (i = 0; i < PAGE_SIZE / sizeof(uint32_t); ++i) |
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250 | iowrite32(ioread32(srcP++), dstP++); |
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251 | return 0; |
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252 | } |
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253 | |||
254 | static int ttm_copy_io_ttm_page(struct ttm_tt *ttm, void *src, |
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255 | unsigned long page, |
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256 | pgprot_t prot) |
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257 | { |
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258 | struct page *d = ttm->pages[page]; |
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259 | void *dst; |
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260 | |||
261 | if (!d) |
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262 | return -ENOMEM; |
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263 | |||
264 | src = (void *)((unsigned long)src + (page << PAGE_SHIFT)); |
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265 | |||
5078 | serge | 266 | dst = (void*)MapIoMem((addr_t)d, 4096, PG_SW); |
267 | |||
4075 | Serge | 268 | if (!dst) |
269 | return -ENOMEM; |
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270 | |||
5078 | serge | 271 | memcpy(dst, src, PAGE_SIZE); |
4075 | Serge | 272 | |
5078 | serge | 273 | FreeKernelSpace(dst); |
4075 | Serge | 274 | |
275 | return 0; |
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276 | } |
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277 | |||
278 | static int ttm_copy_ttm_io_page(struct ttm_tt *ttm, void *dst, |
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279 | unsigned long page, |
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280 | pgprot_t prot) |
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281 | { |
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282 | struct page *s = ttm->pages[page]; |
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283 | void *src; |
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284 | |||
285 | if (!s) |
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286 | return -ENOMEM; |
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287 | |||
288 | dst = (void *)((unsigned long)dst + (page << PAGE_SHIFT)); |
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5078 | serge | 289 | |
290 | src = (void*)MapIoMem((addr_t)s, 4096, PG_SW); |
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291 | |||
4075 | Serge | 292 | if (!src) |
293 | return -ENOMEM; |
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294 | |||
5078 | serge | 295 | memcpy(dst, src, PAGE_SIZE); |
4075 | Serge | 296 | |
5078 | serge | 297 | FreeKernelSpace(src); |
4075 | Serge | 298 | |
299 | return 0; |
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300 | } |
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301 | |||
302 | int ttm_bo_move_memcpy(struct ttm_buffer_object *bo, |
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303 | bool evict, bool no_wait_gpu, |
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304 | struct ttm_mem_reg *new_mem) |
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305 | { |
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306 | struct ttm_bo_device *bdev = bo->bdev; |
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307 | struct ttm_mem_type_manager *man = &bdev->man[new_mem->mem_type]; |
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308 | struct ttm_tt *ttm = bo->ttm; |
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309 | struct ttm_mem_reg *old_mem = &bo->mem; |
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310 | struct ttm_mem_reg old_copy = *old_mem; |
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311 | void *old_iomap; |
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312 | void *new_iomap; |
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313 | int ret; |
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314 | unsigned long i; |
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315 | unsigned long page; |
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316 | unsigned long add = 0; |
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317 | int dir; |
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318 | |||
319 | ret = ttm_mem_reg_ioremap(bdev, old_mem, &old_iomap); |
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320 | if (ret) |
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321 | return ret; |
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322 | ret = ttm_mem_reg_ioremap(bdev, new_mem, &new_iomap); |
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323 | if (ret) |
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324 | goto out; |
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325 | |||
4569 | Serge | 326 | /* |
327 | * Single TTM move. NOP. |
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328 | */ |
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4075 | Serge | 329 | if (old_iomap == NULL && new_iomap == NULL) |
330 | goto out2; |
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4569 | Serge | 331 | |
332 | /* |
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333 | * Don't move nonexistent data. Clear destination instead. |
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334 | */ |
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5078 | serge | 335 | if (old_iomap == NULL && |
336 | (ttm == NULL || (ttm->state == tt_unpopulated && |
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337 | !(ttm->page_flags & TTM_PAGE_FLAG_SWAPPED)))) { |
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338 | memset(new_iomap, 0, new_mem->num_pages*PAGE_SIZE); |
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4075 | Serge | 339 | goto out2; |
5078 | serge | 340 | } |
4075 | Serge | 341 | |
4569 | Serge | 342 | /* |
343 | * TTM might be null for moves within the same region. |
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344 | */ |
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345 | if (ttm && ttm->state == tt_unpopulated) { |
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4075 | Serge | 346 | ret = ttm->bdev->driver->ttm_tt_populate(ttm); |
4569 | Serge | 347 | if (ret) |
4075 | Serge | 348 | goto out1; |
5271 | serge | 349 | } |
4075 | Serge | 350 | |
351 | add = 0; |
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352 | dir = 1; |
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353 | |||
354 | if ((old_mem->mem_type == new_mem->mem_type) && |
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355 | (new_mem->start < old_mem->start + old_mem->size)) { |
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356 | dir = -1; |
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357 | add = new_mem->num_pages - 1; |
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358 | } |
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359 | |||
360 | for (i = 0; i < new_mem->num_pages; ++i) { |
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361 | page = i * dir + add; |
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362 | if (old_iomap == NULL) { |
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363 | pgprot_t prot = ttm_io_prot(old_mem->placement, |
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364 | PAGE_KERNEL); |
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365 | ret = ttm_copy_ttm_io_page(ttm, new_iomap, page, |
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366 | prot); |
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367 | } else if (new_iomap == NULL) { |
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368 | pgprot_t prot = ttm_io_prot(new_mem->placement, |
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369 | PAGE_KERNEL); |
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370 | ret = ttm_copy_io_ttm_page(ttm, old_iomap, page, |
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371 | prot); |
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372 | } else |
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373 | ret = ttm_copy_io_page(new_iomap, old_iomap, page); |
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4569 | Serge | 374 | if (ret) |
4075 | Serge | 375 | goto out1; |
5271 | serge | 376 | } |
4075 | Serge | 377 | mb(); |
378 | out2: |
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379 | old_copy = *old_mem; |
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380 | *old_mem = *new_mem; |
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381 | new_mem->mm_node = NULL; |
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382 | |||
383 | if ((man->flags & TTM_MEMTYPE_FLAG_FIXED) && (ttm != NULL)) { |
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384 | ttm_tt_unbind(ttm); |
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385 | ttm_tt_destroy(ttm); |
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386 | bo->ttm = NULL; |
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387 | } |
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388 | |||
389 | out1: |
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390 | ttm_mem_reg_iounmap(bdev, old_mem, new_iomap); |
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391 | out: |
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392 | ttm_mem_reg_iounmap(bdev, &old_copy, old_iomap); |
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4569 | Serge | 393 | |
394 | /* |
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395 | * On error, keep the mm node! |
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396 | */ |
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397 | if (!ret) |
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5271 | serge | 398 | ttm_bo_mem_put(bo, &old_copy); |
4075 | Serge | 399 | return ret; |
400 | } |
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401 | EXPORT_SYMBOL(ttm_bo_move_memcpy); |
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402 | |||
403 | static void ttm_transfered_destroy(struct ttm_buffer_object *bo) |
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404 | { |
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405 | kfree(bo); |
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406 | } |
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407 | |||
408 | /** |
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409 | * ttm_buffer_object_transfer |
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410 | * |
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411 | * @bo: A pointer to a struct ttm_buffer_object. |
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412 | * @new_obj: A pointer to a pointer to a newly created ttm_buffer_object, |
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413 | * holding the data of @bo with the old placement. |
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414 | * |
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415 | * This is a utility function that may be called after an accelerated move |
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416 | * has been scheduled. A new buffer object is created as a placeholder for |
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417 | * the old data while it's being copied. When that buffer object is idle, |
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418 | * it can be destroyed, releasing the space of the old placement. |
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419 | * Returns: |
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420 | * !0: Failure. |
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421 | */ |
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422 | |||
423 | static int ttm_buffer_object_transfer(struct ttm_buffer_object *bo, |
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424 | struct ttm_buffer_object **new_obj) |
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425 | { |
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426 | struct ttm_buffer_object *fbo; |
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427 | int ret; |
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428 | |||
429 | fbo = kmalloc(sizeof(*fbo), GFP_KERNEL); |
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430 | if (!fbo) |
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431 | return -ENOMEM; |
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432 | |||
433 | *fbo = *bo; |
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434 | |||
435 | /** |
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436 | * Fix up members that we shouldn't copy directly: |
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437 | * TODO: Explicit member copy would probably be better here. |
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438 | */ |
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439 | |||
440 | INIT_LIST_HEAD(&fbo->ddestroy); |
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441 | INIT_LIST_HEAD(&fbo->lru); |
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442 | INIT_LIST_HEAD(&fbo->swap); |
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443 | INIT_LIST_HEAD(&fbo->io_reserve_lru); |
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4112 | Serge | 444 | drm_vma_node_reset(&fbo->vma_node); |
4075 | Serge | 445 | atomic_set(&fbo->cpu_writers, 0); |
446 | |||
447 | kref_init(&fbo->list_kref); |
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448 | kref_init(&fbo->kref); |
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449 | fbo->destroy = &ttm_transfered_destroy; |
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450 | fbo->acc_size = 0; |
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451 | fbo->resv = &fbo->ttm_resv; |
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452 | reservation_object_init(fbo->resv); |
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453 | ret = ww_mutex_trylock(&fbo->resv->lock); |
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454 | WARN_ON(!ret); |
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455 | |||
456 | *new_obj = fbo; |
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457 | return 0; |
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458 | } |
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459 | |||
460 | pgprot_t ttm_io_prot(uint32_t caching_flags, pgprot_t tmp) |
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461 | { |
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6938 | serge | 462 | /* Cached mappings need no adjustment */ |
463 | if (caching_flags & TTM_PL_FLAG_CACHED) |
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464 | return tmp; |
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4075 | Serge | 465 | return tmp; |
466 | } |
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467 | EXPORT_SYMBOL(ttm_io_prot); |
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468 | |||
469 | static int ttm_bo_ioremap(struct ttm_buffer_object *bo, |
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470 | unsigned long offset, |
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471 | unsigned long size, |
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472 | struct ttm_bo_kmap_obj *map) |
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473 | { |
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474 | struct ttm_mem_reg *mem = &bo->mem; |
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475 | |||
476 | if (bo->mem.bus.addr) { |
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477 | map->bo_kmap_type = ttm_bo_map_premapped; |
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478 | map->virtual = (void *)(((u8 *)bo->mem.bus.addr) + offset); |
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479 | } else { |
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480 | map->bo_kmap_type = ttm_bo_map_iomap; |
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481 | if (mem->placement & TTM_PL_FLAG_WC) |
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482 | map->virtual = ioremap_wc(bo->mem.bus.base + bo->mem.bus.offset + offset, |
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483 | size); |
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484 | else |
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6296 | serge | 485 | map->virtual = ioremap_nocache(bo->mem.bus.base + bo->mem.bus.offset + offset, |
4075 | Serge | 486 | size); |
487 | } |
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488 | return (!map->virtual) ? -ENOMEM : 0; |
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489 | } |
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490 | |||
491 | static int ttm_bo_kmap_ttm(struct ttm_buffer_object *bo, |
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492 | unsigned long start_page, |
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493 | unsigned long num_pages, |
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494 | struct ttm_bo_kmap_obj *map) |
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495 | { |
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496 | struct ttm_mem_reg *mem = &bo->mem; pgprot_t prot; |
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497 | struct ttm_tt *ttm = bo->ttm; |
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498 | int ret; |
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499 | |||
500 | BUG_ON(!ttm); |
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501 | |||
502 | if (ttm->state == tt_unpopulated) { |
||
503 | ret = ttm->bdev->driver->ttm_tt_populate(ttm); |
||
504 | if (ret) |
||
505 | return ret; |
||
506 | } |
||
507 | |||
508 | if (num_pages == 1 && (mem->placement & TTM_PL_FLAG_CACHED)) { |
||
509 | /* |
||
510 | * We're mapping a single page, and the desired |
||
511 | * page protection is consistent with the bo. |
||
512 | */ |
||
513 | |||
514 | map->bo_kmap_type = ttm_bo_map_kmap; |
||
515 | map->page = ttm->pages[start_page]; |
||
6296 | serge | 516 | map->virtual = kmap(map->page); |
4075 | Serge | 517 | } else { |
518 | /* |
||
519 | * We need to use vmap to get the desired page protection |
||
520 | * or to make the buffer object look contiguous. |
||
521 | */ |
||
6296 | serge | 522 | prot = ttm_io_prot(mem->placement, PAGE_KERNEL); |
4075 | Serge | 523 | map->bo_kmap_type = ttm_bo_map_vmap; |
524 | map->virtual = vmap(ttm->pages + start_page, num_pages, |
||
525 | 0, prot); |
||
526 | } |
||
527 | return (!map->virtual) ? -ENOMEM : 0; |
||
528 | } |
||
529 | |||
530 | int ttm_bo_kmap(struct ttm_buffer_object *bo, |
||
531 | unsigned long start_page, unsigned long num_pages, |
||
532 | struct ttm_bo_kmap_obj *map) |
||
533 | { |
||
534 | struct ttm_mem_type_manager *man = |
||
535 | &bo->bdev->man[bo->mem.mem_type]; |
||
536 | unsigned long offset, size; |
||
537 | int ret; |
||
538 | |||
539 | BUG_ON(!list_empty(&bo->swap)); |
||
540 | map->virtual = NULL; |
||
541 | map->bo = bo; |
||
542 | if (num_pages > bo->num_pages) |
||
543 | return -EINVAL; |
||
544 | if (start_page > bo->num_pages) |
||
545 | return -EINVAL; |
||
546 | #if 0 |
||
4569 | Serge | 547 | if (num_pages > 1 && !capable(CAP_SYS_ADMIN)) |
4075 | Serge | 548 | return -EPERM; |
549 | #endif |
||
550 | (void) ttm_mem_io_lock(man, false); |
||
551 | ret = ttm_mem_io_reserve(bo->bdev, &bo->mem); |
||
552 | ttm_mem_io_unlock(man); |
||
553 | if (ret) |
||
554 | return ret; |
||
555 | if (!bo->mem.bus.is_iomem) { |
||
556 | return ttm_bo_kmap_ttm(bo, start_page, num_pages, map); |
||
557 | } else { |
||
558 | offset = start_page << PAGE_SHIFT; |
||
559 | size = num_pages << PAGE_SHIFT; |
||
560 | return ttm_bo_ioremap(bo, offset, size, map); |
||
561 | } |
||
562 | } |
||
563 | EXPORT_SYMBOL(ttm_bo_kmap); |
||
564 | |||
565 | void ttm_bo_kunmap(struct ttm_bo_kmap_obj *map) |
||
566 | { |
||
567 | struct ttm_buffer_object *bo = map->bo; |
||
568 | struct ttm_mem_type_manager *man = |
||
569 | &bo->bdev->man[bo->mem.mem_type]; |
||
570 | |||
571 | if (!map->virtual) |
||
572 | return; |
||
573 | switch (map->bo_kmap_type) { |
||
574 | case ttm_bo_map_iomap: |
||
575 | iounmap(map->virtual); |
||
576 | break; |
||
577 | case ttm_bo_map_vmap: |
||
6296 | serge | 578 | break; |
4075 | Serge | 579 | case ttm_bo_map_kmap: |
6296 | serge | 580 | kunmap(map->page); |
4075 | Serge | 581 | break; |
582 | case ttm_bo_map_premapped: |
||
583 | break; |
||
584 | default: |
||
585 | BUG(); |
||
586 | } |
||
587 | (void) ttm_mem_io_lock(man, false); |
||
588 | ttm_mem_io_free(map->bo->bdev, &map->bo->mem); |
||
589 | ttm_mem_io_unlock(man); |
||
590 | map->virtual = NULL; |
||
591 | map->page = NULL; |
||
592 | } |
||
593 | EXPORT_SYMBOL(ttm_bo_kunmap); |
||
594 | |||
595 | int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo, |
||
5271 | serge | 596 | struct fence *fence, |
4075 | Serge | 597 | bool evict, |
598 | bool no_wait_gpu, |
||
599 | struct ttm_mem_reg *new_mem) |
||
600 | { |
||
601 | struct ttm_bo_device *bdev = bo->bdev; |
||
602 | struct ttm_mem_type_manager *man = &bdev->man[new_mem->mem_type]; |
||
603 | struct ttm_mem_reg *old_mem = &bo->mem; |
||
604 | int ret; |
||
605 | struct ttm_buffer_object *ghost_obj; |
||
606 | |||
5271 | serge | 607 | reservation_object_add_excl_fence(bo->resv, fence); |
4075 | Serge | 608 | if (evict) { |
609 | ret = ttm_bo_wait(bo, false, false, false); |
||
610 | if (ret) |
||
611 | return ret; |
||
612 | |||
613 | if ((man->flags & TTM_MEMTYPE_FLAG_FIXED) && |
||
614 | (bo->ttm != NULL)) { |
||
615 | ttm_tt_unbind(bo->ttm); |
||
616 | ttm_tt_destroy(bo->ttm); |
||
617 | bo->ttm = NULL; |
||
618 | } |
||
619 | ttm_bo_free_old_node(bo); |
||
620 | } else { |
||
621 | /** |
||
622 | * This should help pipeline ordinary buffer moves. |
||
623 | * |
||
624 | * Hang old buffer memory on a new buffer object, |
||
625 | * and leave it to be released when the GPU |
||
626 | * operation has completed. |
||
627 | */ |
||
628 | |||
629 | set_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags); |
||
630 | |||
631 | ret = ttm_buffer_object_transfer(bo, &ghost_obj); |
||
632 | if (ret) |
||
633 | return ret; |
||
634 | |||
5271 | serge | 635 | reservation_object_add_excl_fence(ghost_obj->resv, fence); |
636 | |||
4075 | Serge | 637 | /** |
638 | * If we're not moving to fixed memory, the TTM object |
||
639 | * needs to stay alive. Otherwhise hang it on the ghost |
||
640 | * bo to be unbound and destroyed. |
||
641 | */ |
||
642 | |||
643 | if (!(man->flags & TTM_MEMTYPE_FLAG_FIXED)) |
||
644 | ghost_obj->ttm = NULL; |
||
645 | else |
||
646 | bo->ttm = NULL; |
||
647 | |||
648 | ttm_bo_unreserve(ghost_obj); |
||
649 | ttm_bo_unref(&ghost_obj); |
||
650 | } |
||
651 | |||
652 | *old_mem = *new_mem; |
||
653 | new_mem->mm_node = NULL; |
||
654 | |||
655 | return 0; |
||
656 | } |
||
657 | EXPORT_SYMBOL(ttm_bo_move_accel_cleanup); |
||
5078 | serge | 658 | |
659 | |||
660 | void *vmap(struct page **pages, unsigned int count, |
||
661 | unsigned long flags, pgprot_t prot) |
||
662 | { |
||
663 | void *vaddr; |
||
664 | char *tmp; |
||
665 | int i; |
||
666 | |||
667 | vaddr = AllocKernelSpace(count << 12); |
||
668 | if(vaddr == NULL) |
||
669 | return NULL; |
||
670 | |||
671 | for(i = 0, tmp = vaddr; i < count; i++) |
||
672 | { |
||
673 | MapPage(tmp, page_to_phys(pages[i]), PG_SW); |
||
674 | tmp+= 4096; |
||
675 | }; |
||
676 | |||
677 | return vaddr; |
||
678 | };>><>><>><>>>><>><>>><>><> |
||
679 |