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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 | |||
45 | void *vmap(struct page **pages, unsigned int count, |
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46 | unsigned long flags, pgprot_t prot); |
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47 | |||
4075 | Serge | 48 | void ttm_bo_free_old_node(struct ttm_buffer_object *bo) |
49 | { |
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50 | ttm_bo_mem_put(bo, &bo->mem); |
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51 | } |
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52 | |||
53 | int ttm_bo_move_ttm(struct ttm_buffer_object *bo, |
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54 | bool evict, |
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55 | bool no_wait_gpu, struct ttm_mem_reg *new_mem) |
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56 | { |
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57 | struct ttm_tt *ttm = bo->ttm; |
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58 | struct ttm_mem_reg *old_mem = &bo->mem; |
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59 | int ret; |
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60 | |||
61 | if (old_mem->mem_type != TTM_PL_SYSTEM) { |
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62 | ttm_tt_unbind(ttm); |
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63 | ttm_bo_free_old_node(bo); |
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64 | ttm_flag_masked(&old_mem->placement, TTM_PL_FLAG_SYSTEM, |
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65 | TTM_PL_MASK_MEM); |
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66 | old_mem->mem_type = TTM_PL_SYSTEM; |
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67 | } |
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68 | |||
69 | ret = ttm_tt_set_placement_caching(ttm, new_mem->placement); |
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70 | if (unlikely(ret != 0)) |
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71 | return ret; |
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72 | |||
73 | if (new_mem->mem_type != TTM_PL_SYSTEM) { |
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74 | ret = ttm_tt_bind(ttm, new_mem); |
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75 | if (unlikely(ret != 0)) |
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76 | return ret; |
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77 | } |
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78 | |||
79 | *old_mem = *new_mem; |
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80 | new_mem->mm_node = NULL; |
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81 | |||
82 | return 0; |
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83 | } |
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84 | EXPORT_SYMBOL(ttm_bo_move_ttm); |
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85 | |||
86 | int ttm_mem_io_lock(struct ttm_mem_type_manager *man, bool interruptible) |
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87 | { |
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88 | if (likely(man->io_reserve_fastpath)) |
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89 | return 0; |
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90 | |||
91 | if (interruptible) |
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92 | return mutex_lock_interruptible(&man->io_reserve_mutex); |
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93 | |||
94 | mutex_lock(&man->io_reserve_mutex); |
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95 | return 0; |
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96 | } |
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97 | EXPORT_SYMBOL(ttm_mem_io_lock); |
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98 | |||
99 | void ttm_mem_io_unlock(struct ttm_mem_type_manager *man) |
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100 | { |
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101 | if (likely(man->io_reserve_fastpath)) |
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102 | return; |
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103 | |||
104 | mutex_unlock(&man->io_reserve_mutex); |
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105 | } |
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106 | EXPORT_SYMBOL(ttm_mem_io_unlock); |
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107 | |||
108 | static int ttm_mem_io_evict(struct ttm_mem_type_manager *man) |
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109 | { |
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110 | struct ttm_buffer_object *bo; |
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111 | |||
112 | if (!man->use_io_reserve_lru || list_empty(&man->io_reserve_lru)) |
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113 | return -EAGAIN; |
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114 | |||
115 | bo = list_first_entry(&man->io_reserve_lru, |
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116 | struct ttm_buffer_object, |
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117 | io_reserve_lru); |
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118 | list_del_init(&bo->io_reserve_lru); |
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119 | ttm_bo_unmap_virtual_locked(bo); |
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120 | |||
121 | return 0; |
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122 | } |
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123 | |||
124 | |||
125 | int ttm_mem_io_reserve(struct ttm_bo_device *bdev, |
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126 | struct ttm_mem_reg *mem) |
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127 | { |
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128 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; |
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129 | int ret = 0; |
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130 | |||
131 | if (!bdev->driver->io_mem_reserve) |
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132 | return 0; |
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133 | if (likely(man->io_reserve_fastpath)) |
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134 | return bdev->driver->io_mem_reserve(bdev, mem); |
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135 | |||
136 | if (bdev->driver->io_mem_reserve && |
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137 | mem->bus.io_reserved_count++ == 0) { |
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138 | retry: |
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139 | ret = bdev->driver->io_mem_reserve(bdev, mem); |
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140 | if (ret == -EAGAIN) { |
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141 | ret = ttm_mem_io_evict(man); |
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142 | if (ret == 0) |
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143 | goto retry; |
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144 | } |
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145 | } |
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146 | return ret; |
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147 | } |
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148 | EXPORT_SYMBOL(ttm_mem_io_reserve); |
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149 | |||
150 | void ttm_mem_io_free(struct ttm_bo_device *bdev, |
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151 | struct ttm_mem_reg *mem) |
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152 | { |
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153 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; |
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154 | |||
155 | if (likely(man->io_reserve_fastpath)) |
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156 | return; |
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157 | |||
158 | if (bdev->driver->io_mem_reserve && |
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159 | --mem->bus.io_reserved_count == 0 && |
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160 | bdev->driver->io_mem_free) |
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161 | bdev->driver->io_mem_free(bdev, mem); |
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162 | |||
163 | } |
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164 | EXPORT_SYMBOL(ttm_mem_io_free); |
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165 | |||
5078 | serge | 166 | #if 0 |
4075 | Serge | 167 | int ttm_mem_io_reserve_vm(struct ttm_buffer_object *bo) |
168 | { |
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169 | struct ttm_mem_reg *mem = &bo->mem; |
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170 | int ret; |
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171 | |||
172 | if (!mem->bus.io_reserved_vm) { |
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173 | struct ttm_mem_type_manager *man = |
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174 | &bo->bdev->man[mem->mem_type]; |
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175 | |||
176 | ret = ttm_mem_io_reserve(bo->bdev, mem); |
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177 | if (unlikely(ret != 0)) |
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178 | return ret; |
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179 | mem->bus.io_reserved_vm = true; |
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180 | if (man->use_io_reserve_lru) |
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181 | list_add_tail(&bo->io_reserve_lru, |
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182 | &man->io_reserve_lru); |
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183 | } |
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184 | return 0; |
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185 | } |
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5078 | serge | 186 | #endif |
4075 | Serge | 187 | |
188 | void ttm_mem_io_free_vm(struct ttm_buffer_object *bo) |
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189 | { |
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190 | struct ttm_mem_reg *mem = &bo->mem; |
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191 | |||
192 | if (mem->bus.io_reserved_vm) { |
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193 | mem->bus.io_reserved_vm = false; |
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194 | list_del_init(&bo->io_reserve_lru); |
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195 | ttm_mem_io_free(bo->bdev, mem); |
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196 | } |
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197 | } |
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198 | |||
4569 | Serge | 199 | static int ttm_mem_reg_ioremap(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem, |
4075 | Serge | 200 | void **virtual) |
201 | { |
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202 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; |
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203 | int ret; |
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204 | void *addr; |
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205 | |||
206 | *virtual = NULL; |
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207 | (void) ttm_mem_io_lock(man, false); |
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208 | ret = ttm_mem_io_reserve(bdev, mem); |
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209 | ttm_mem_io_unlock(man); |
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210 | if (ret || !mem->bus.is_iomem) |
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211 | return ret; |
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212 | |||
213 | if (mem->bus.addr) { |
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214 | addr = mem->bus.addr; |
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215 | } else { |
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216 | if (mem->placement & TTM_PL_FLAG_WC) |
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217 | addr = ioremap_wc(mem->bus.base + mem->bus.offset, mem->bus.size); |
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218 | else |
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5078 | serge | 219 | addr = ioremap(mem->bus.base + mem->bus.offset, mem->bus.size); |
4075 | Serge | 220 | if (!addr) { |
221 | (void) ttm_mem_io_lock(man, false); |
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222 | ttm_mem_io_free(bdev, mem); |
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223 | ttm_mem_io_unlock(man); |
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224 | return -ENOMEM; |
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225 | } |
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226 | } |
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227 | *virtual = addr; |
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228 | return 0; |
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229 | } |
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230 | |||
4569 | Serge | 231 | static void ttm_mem_reg_iounmap(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem, |
4075 | Serge | 232 | void *virtual) |
233 | { |
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234 | struct ttm_mem_type_manager *man; |
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235 | |||
236 | man = &bdev->man[mem->mem_type]; |
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237 | |||
238 | if (virtual && mem->bus.addr == NULL) |
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239 | iounmap(virtual); |
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240 | (void) ttm_mem_io_lock(man, false); |
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241 | ttm_mem_io_free(bdev, mem); |
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242 | ttm_mem_io_unlock(man); |
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243 | } |
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244 | |||
245 | static int ttm_copy_io_page(void *dst, void *src, unsigned long page) |
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246 | { |
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247 | uint32_t *dstP = |
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248 | (uint32_t *) ((unsigned long)dst + (page << PAGE_SHIFT)); |
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249 | uint32_t *srcP = |
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250 | (uint32_t *) ((unsigned long)src + (page << PAGE_SHIFT)); |
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251 | |||
252 | int i; |
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253 | for (i = 0; i < PAGE_SIZE / sizeof(uint32_t); ++i) |
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254 | iowrite32(ioread32(srcP++), dstP++); |
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255 | return 0; |
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256 | } |
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257 | |||
258 | static int ttm_copy_io_ttm_page(struct ttm_tt *ttm, void *src, |
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259 | unsigned long page, |
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260 | pgprot_t prot) |
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261 | { |
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262 | struct page *d = ttm->pages[page]; |
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263 | void *dst; |
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264 | |||
265 | if (!d) |
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266 | return -ENOMEM; |
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267 | |||
268 | src = (void *)((unsigned long)src + (page << PAGE_SHIFT)); |
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269 | |||
5078 | serge | 270 | dst = (void*)MapIoMem((addr_t)d, 4096, PG_SW); |
271 | |||
4075 | Serge | 272 | if (!dst) |
273 | return -ENOMEM; |
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274 | |||
5078 | serge | 275 | memcpy(dst, src, PAGE_SIZE); |
4075 | Serge | 276 | |
5078 | serge | 277 | FreeKernelSpace(dst); |
4075 | Serge | 278 | |
279 | return 0; |
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280 | } |
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281 | |||
282 | static int ttm_copy_ttm_io_page(struct ttm_tt *ttm, void *dst, |
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283 | unsigned long page, |
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284 | pgprot_t prot) |
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285 | { |
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286 | struct page *s = ttm->pages[page]; |
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287 | void *src; |
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288 | |||
289 | if (!s) |
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290 | return -ENOMEM; |
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291 | |||
292 | dst = (void *)((unsigned long)dst + (page << PAGE_SHIFT)); |
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5078 | serge | 293 | |
294 | src = (void*)MapIoMem((addr_t)s, 4096, PG_SW); |
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295 | |||
4075 | Serge | 296 | if (!src) |
297 | return -ENOMEM; |
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298 | |||
5078 | serge | 299 | memcpy(dst, src, PAGE_SIZE); |
4075 | Serge | 300 | |
5078 | serge | 301 | FreeKernelSpace(src); |
4075 | Serge | 302 | |
303 | return 0; |
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304 | } |
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305 | |||
306 | int ttm_bo_move_memcpy(struct ttm_buffer_object *bo, |
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307 | bool evict, bool no_wait_gpu, |
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308 | struct ttm_mem_reg *new_mem) |
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309 | { |
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310 | struct ttm_bo_device *bdev = bo->bdev; |
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311 | struct ttm_mem_type_manager *man = &bdev->man[new_mem->mem_type]; |
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312 | struct ttm_tt *ttm = bo->ttm; |
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313 | struct ttm_mem_reg *old_mem = &bo->mem; |
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314 | struct ttm_mem_reg old_copy = *old_mem; |
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315 | void *old_iomap; |
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316 | void *new_iomap; |
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317 | int ret; |
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318 | unsigned long i; |
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319 | unsigned long page; |
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320 | unsigned long add = 0; |
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321 | int dir; |
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322 | |||
323 | ret = ttm_mem_reg_ioremap(bdev, old_mem, &old_iomap); |
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324 | if (ret) |
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325 | return ret; |
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326 | ret = ttm_mem_reg_ioremap(bdev, new_mem, &new_iomap); |
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327 | if (ret) |
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328 | goto out; |
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329 | |||
4569 | Serge | 330 | /* |
331 | * Single TTM move. NOP. |
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332 | */ |
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4075 | Serge | 333 | if (old_iomap == NULL && new_iomap == NULL) |
334 | goto out2; |
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4569 | Serge | 335 | |
336 | /* |
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337 | * Don't move nonexistent data. Clear destination instead. |
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338 | */ |
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5078 | serge | 339 | if (old_iomap == NULL && |
340 | (ttm == NULL || (ttm->state == tt_unpopulated && |
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341 | !(ttm->page_flags & TTM_PAGE_FLAG_SWAPPED)))) { |
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342 | memset(new_iomap, 0, new_mem->num_pages*PAGE_SIZE); |
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4075 | Serge | 343 | goto out2; |
5078 | serge | 344 | } |
4075 | Serge | 345 | |
4569 | Serge | 346 | /* |
347 | * TTM might be null for moves within the same region. |
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348 | */ |
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349 | if (ttm && ttm->state == tt_unpopulated) { |
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4075 | Serge | 350 | ret = ttm->bdev->driver->ttm_tt_populate(ttm); |
4569 | Serge | 351 | if (ret) |
4075 | Serge | 352 | goto out1; |
5271 | serge | 353 | } |
4075 | Serge | 354 | |
355 | add = 0; |
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356 | dir = 1; |
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357 | |||
358 | if ((old_mem->mem_type == new_mem->mem_type) && |
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359 | (new_mem->start < old_mem->start + old_mem->size)) { |
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360 | dir = -1; |
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361 | add = new_mem->num_pages - 1; |
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362 | } |
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363 | |||
364 | for (i = 0; i < new_mem->num_pages; ++i) { |
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365 | page = i * dir + add; |
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366 | if (old_iomap == NULL) { |
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367 | pgprot_t prot = ttm_io_prot(old_mem->placement, |
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368 | PAGE_KERNEL); |
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369 | ret = ttm_copy_ttm_io_page(ttm, new_iomap, page, |
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370 | prot); |
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371 | } else if (new_iomap == NULL) { |
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372 | pgprot_t prot = ttm_io_prot(new_mem->placement, |
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373 | PAGE_KERNEL); |
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374 | ret = ttm_copy_io_ttm_page(ttm, old_iomap, page, |
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375 | prot); |
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376 | } else |
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377 | ret = ttm_copy_io_page(new_iomap, old_iomap, page); |
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4569 | Serge | 378 | if (ret) |
4075 | Serge | 379 | goto out1; |
5271 | serge | 380 | } |
4075 | Serge | 381 | mb(); |
382 | out2: |
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383 | old_copy = *old_mem; |
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384 | *old_mem = *new_mem; |
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385 | new_mem->mm_node = NULL; |
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386 | |||
387 | if ((man->flags & TTM_MEMTYPE_FLAG_FIXED) && (ttm != NULL)) { |
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388 | ttm_tt_unbind(ttm); |
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389 | ttm_tt_destroy(ttm); |
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390 | bo->ttm = NULL; |
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391 | } |
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392 | |||
393 | out1: |
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394 | ttm_mem_reg_iounmap(bdev, old_mem, new_iomap); |
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395 | out: |
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396 | ttm_mem_reg_iounmap(bdev, &old_copy, old_iomap); |
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4569 | Serge | 397 | |
398 | /* |
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399 | * On error, keep the mm node! |
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400 | */ |
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401 | if (!ret) |
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5271 | serge | 402 | ttm_bo_mem_put(bo, &old_copy); |
4075 | Serge | 403 | return ret; |
404 | } |
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405 | EXPORT_SYMBOL(ttm_bo_move_memcpy); |
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406 | |||
407 | static void ttm_transfered_destroy(struct ttm_buffer_object *bo) |
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408 | { |
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409 | kfree(bo); |
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410 | } |
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411 | |||
412 | /** |
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413 | * ttm_buffer_object_transfer |
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414 | * |
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415 | * @bo: A pointer to a struct ttm_buffer_object. |
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416 | * @new_obj: A pointer to a pointer to a newly created ttm_buffer_object, |
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417 | * holding the data of @bo with the old placement. |
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418 | * |
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419 | * This is a utility function that may be called after an accelerated move |
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420 | * has been scheduled. A new buffer object is created as a placeholder for |
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421 | * the old data while it's being copied. When that buffer object is idle, |
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422 | * it can be destroyed, releasing the space of the old placement. |
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423 | * Returns: |
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424 | * !0: Failure. |
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425 | */ |
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426 | |||
427 | static int ttm_buffer_object_transfer(struct ttm_buffer_object *bo, |
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428 | struct ttm_buffer_object **new_obj) |
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429 | { |
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430 | struct ttm_buffer_object *fbo; |
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431 | int ret; |
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432 | |||
433 | fbo = kmalloc(sizeof(*fbo), GFP_KERNEL); |
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434 | if (!fbo) |
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435 | return -ENOMEM; |
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436 | |||
437 | *fbo = *bo; |
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438 | |||
439 | /** |
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440 | * Fix up members that we shouldn't copy directly: |
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441 | * TODO: Explicit member copy would probably be better here. |
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442 | */ |
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443 | |||
444 | INIT_LIST_HEAD(&fbo->ddestroy); |
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445 | INIT_LIST_HEAD(&fbo->lru); |
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446 | INIT_LIST_HEAD(&fbo->swap); |
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447 | INIT_LIST_HEAD(&fbo->io_reserve_lru); |
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4112 | Serge | 448 | drm_vma_node_reset(&fbo->vma_node); |
4075 | Serge | 449 | atomic_set(&fbo->cpu_writers, 0); |
450 | |||
451 | kref_init(&fbo->list_kref); |
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452 | kref_init(&fbo->kref); |
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453 | fbo->destroy = &ttm_transfered_destroy; |
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454 | fbo->acc_size = 0; |
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455 | fbo->resv = &fbo->ttm_resv; |
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456 | reservation_object_init(fbo->resv); |
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457 | ret = ww_mutex_trylock(&fbo->resv->lock); |
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458 | WARN_ON(!ret); |
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459 | |||
460 | *new_obj = fbo; |
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461 | return 0; |
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462 | } |
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463 | |||
464 | pgprot_t ttm_io_prot(uint32_t caching_flags, pgprot_t tmp) |
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465 | { |
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466 | return tmp; |
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467 | } |
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468 | EXPORT_SYMBOL(ttm_io_prot); |
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469 | |||
470 | static int ttm_bo_ioremap(struct ttm_buffer_object *bo, |
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471 | unsigned long offset, |
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472 | unsigned long size, |
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473 | struct ttm_bo_kmap_obj *map) |
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474 | { |
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475 | struct ttm_mem_reg *mem = &bo->mem; |
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476 | |||
477 | if (bo->mem.bus.addr) { |
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478 | map->bo_kmap_type = ttm_bo_map_premapped; |
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479 | map->virtual = (void *)(((u8 *)bo->mem.bus.addr) + offset); |
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480 | } else { |
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481 | map->bo_kmap_type = ttm_bo_map_iomap; |
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482 | if (mem->placement & TTM_PL_FLAG_WC) |
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483 | map->virtual = ioremap_wc(bo->mem.bus.base + bo->mem.bus.offset + offset, |
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484 | size); |
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485 | else |
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5078 | serge | 486 | map->virtual = ioremap(bo->mem.bus.base + bo->mem.bus.offset + offset, |
4075 | Serge | 487 | size); |
488 | } |
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489 | return (!map->virtual) ? -ENOMEM : 0; |
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490 | } |
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491 | |||
492 | static int ttm_bo_kmap_ttm(struct ttm_buffer_object *bo, |
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493 | unsigned long start_page, |
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494 | unsigned long num_pages, |
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495 | struct ttm_bo_kmap_obj *map) |
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496 | { |
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497 | struct ttm_mem_reg *mem = &bo->mem; pgprot_t prot; |
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498 | struct ttm_tt *ttm = bo->ttm; |
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499 | int ret; |
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500 | |||
501 | BUG_ON(!ttm); |
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502 | |||
503 | if (ttm->state == tt_unpopulated) { |
||
504 | ret = ttm->bdev->driver->ttm_tt_populate(ttm); |
||
505 | if (ret) |
||
506 | return ret; |
||
507 | } |
||
508 | |||
509 | if (num_pages == 1 && (mem->placement & TTM_PL_FLAG_CACHED)) { |
||
510 | /* |
||
511 | * We're mapping a single page, and the desired |
||
512 | * page protection is consistent with the bo. |
||
513 | */ |
||
514 | |||
515 | map->bo_kmap_type = ttm_bo_map_kmap; |
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516 | map->page = ttm->pages[start_page]; |
||
5078 | serge | 517 | map->virtual = (void*)MapIoMem(page_to_phys(map->page), 4096, PG_SW); |
4075 | Serge | 518 | } else { |
519 | /* |
||
520 | * We need to use vmap to get the desired page protection |
||
521 | * or to make the buffer object look contiguous. |
||
522 | */ |
||
523 | prot = (mem->placement & TTM_PL_FLAG_CACHED) ? |
||
524 | PAGE_KERNEL : |
||
525 | ttm_io_prot(mem->placement, PAGE_KERNEL); |
||
526 | map->bo_kmap_type = ttm_bo_map_vmap; |
||
527 | map->virtual = vmap(ttm->pages + start_page, num_pages, |
||
528 | 0, prot); |
||
529 | } |
||
530 | return (!map->virtual) ? -ENOMEM : 0; |
||
531 | } |
||
532 | |||
533 | int ttm_bo_kmap(struct ttm_buffer_object *bo, |
||
534 | unsigned long start_page, unsigned long num_pages, |
||
535 | struct ttm_bo_kmap_obj *map) |
||
536 | { |
||
537 | struct ttm_mem_type_manager *man = |
||
538 | &bo->bdev->man[bo->mem.mem_type]; |
||
539 | unsigned long offset, size; |
||
540 | int ret; |
||
541 | |||
542 | BUG_ON(!list_empty(&bo->swap)); |
||
543 | map->virtual = NULL; |
||
544 | map->bo = bo; |
||
545 | if (num_pages > bo->num_pages) |
||
546 | return -EINVAL; |
||
547 | if (start_page > bo->num_pages) |
||
548 | return -EINVAL; |
||
549 | #if 0 |
||
4569 | Serge | 550 | if (num_pages > 1 && !capable(CAP_SYS_ADMIN)) |
4075 | Serge | 551 | return -EPERM; |
552 | #endif |
||
553 | (void) ttm_mem_io_lock(man, false); |
||
554 | ret = ttm_mem_io_reserve(bo->bdev, &bo->mem); |
||
555 | ttm_mem_io_unlock(man); |
||
556 | if (ret) |
||
557 | return ret; |
||
558 | if (!bo->mem.bus.is_iomem) { |
||
559 | return ttm_bo_kmap_ttm(bo, start_page, num_pages, map); |
||
560 | } else { |
||
561 | offset = start_page << PAGE_SHIFT; |
||
562 | size = num_pages << PAGE_SHIFT; |
||
563 | return ttm_bo_ioremap(bo, offset, size, map); |
||
564 | } |
||
565 | } |
||
566 | EXPORT_SYMBOL(ttm_bo_kmap); |
||
567 | |||
568 | void ttm_bo_kunmap(struct ttm_bo_kmap_obj *map) |
||
569 | { |
||
570 | struct ttm_buffer_object *bo = map->bo; |
||
571 | struct ttm_mem_type_manager *man = |
||
572 | &bo->bdev->man[bo->mem.mem_type]; |
||
573 | |||
574 | if (!map->virtual) |
||
575 | return; |
||
576 | switch (map->bo_kmap_type) { |
||
577 | case ttm_bo_map_iomap: |
||
578 | iounmap(map->virtual); |
||
579 | break; |
||
580 | case ttm_bo_map_vmap: |
||
581 | case ttm_bo_map_kmap: |
||
5078 | serge | 582 | FreeKernelSpace(map->virtual); |
4075 | Serge | 583 | break; |
584 | case ttm_bo_map_premapped: |
||
585 | break; |
||
586 | default: |
||
587 | BUG(); |
||
588 | } |
||
589 | (void) ttm_mem_io_lock(man, false); |
||
590 | ttm_mem_io_free(map->bo->bdev, &map->bo->mem); |
||
591 | ttm_mem_io_unlock(man); |
||
592 | map->virtual = NULL; |
||
593 | map->page = NULL; |
||
594 | } |
||
595 | EXPORT_SYMBOL(ttm_bo_kunmap); |
||
596 | |||
597 | int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo, |
||
5271 | serge | 598 | struct fence *fence, |
4075 | Serge | 599 | bool evict, |
600 | bool no_wait_gpu, |
||
601 | struct ttm_mem_reg *new_mem) |
||
602 | { |
||
603 | struct ttm_bo_device *bdev = bo->bdev; |
||
604 | struct ttm_mem_type_manager *man = &bdev->man[new_mem->mem_type]; |
||
605 | struct ttm_mem_reg *old_mem = &bo->mem; |
||
606 | int ret; |
||
607 | struct ttm_buffer_object *ghost_obj; |
||
608 | |||
5271 | serge | 609 | reservation_object_add_excl_fence(bo->resv, fence); |
4075 | Serge | 610 | if (evict) { |
611 | ret = ttm_bo_wait(bo, false, false, false); |
||
612 | if (ret) |
||
613 | return ret; |
||
614 | |||
615 | if ((man->flags & TTM_MEMTYPE_FLAG_FIXED) && |
||
616 | (bo->ttm != NULL)) { |
||
617 | ttm_tt_unbind(bo->ttm); |
||
618 | ttm_tt_destroy(bo->ttm); |
||
619 | bo->ttm = NULL; |
||
620 | } |
||
621 | ttm_bo_free_old_node(bo); |
||
622 | } else { |
||
623 | /** |
||
624 | * This should help pipeline ordinary buffer moves. |
||
625 | * |
||
626 | * Hang old buffer memory on a new buffer object, |
||
627 | * and leave it to be released when the GPU |
||
628 | * operation has completed. |
||
629 | */ |
||
630 | |||
631 | set_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags); |
||
632 | |||
633 | ret = ttm_buffer_object_transfer(bo, &ghost_obj); |
||
634 | if (ret) |
||
635 | return ret; |
||
636 | |||
5271 | serge | 637 | reservation_object_add_excl_fence(ghost_obj->resv, fence); |
638 | |||
4075 | Serge | 639 | /** |
640 | * If we're not moving to fixed memory, the TTM object |
||
641 | * needs to stay alive. Otherwhise hang it on the ghost |
||
642 | * bo to be unbound and destroyed. |
||
643 | */ |
||
644 | |||
645 | if (!(man->flags & TTM_MEMTYPE_FLAG_FIXED)) |
||
646 | ghost_obj->ttm = NULL; |
||
647 | else |
||
648 | bo->ttm = NULL; |
||
649 | |||
650 | ttm_bo_unreserve(ghost_obj); |
||
651 | ttm_bo_unref(&ghost_obj); |
||
652 | } |
||
653 | |||
654 | *old_mem = *new_mem; |
||
655 | new_mem->mm_node = NULL; |
||
656 | |||
657 | return 0; |
||
658 | } |
||
659 | EXPORT_SYMBOL(ttm_bo_move_accel_cleanup); |
||
5078 | serge | 660 | |
661 | |||
662 | void *vmap(struct page **pages, unsigned int count, |
||
663 | unsigned long flags, pgprot_t prot) |
||
664 | { |
||
665 | void *vaddr; |
||
666 | char *tmp; |
||
667 | int i; |
||
668 | |||
669 | vaddr = AllocKernelSpace(count << 12); |
||
670 | if(vaddr == NULL) |
||
671 | return NULL; |
||
672 | |||
673 | for(i = 0, tmp = vaddr; i < count; i++) |
||
674 | { |
||
675 | MapPage(tmp, page_to_phys(pages[i]), PG_SW); |
||
676 | tmp+= 4096; |
||
677 | }; |
||
678 | |||
679 | return vaddr; |
||
680 | };>><>><>><>>>><>><>>><>><> |
||
681 |