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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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33 | #include |
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34 | #include |
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35 | #include |
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36 | #include |
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37 | #include |
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38 | #include |
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39 | |||
40 | void ttm_bo_free_old_node(struct ttm_buffer_object *bo) |
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41 | { |
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42 | ttm_bo_mem_put(bo, &bo->mem); |
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43 | } |
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44 | |||
45 | int ttm_bo_move_ttm(struct ttm_buffer_object *bo, |
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46 | bool evict, |
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47 | bool no_wait_gpu, struct ttm_mem_reg *new_mem) |
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48 | { |
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49 | struct ttm_tt *ttm = bo->ttm; |
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50 | struct ttm_mem_reg *old_mem = &bo->mem; |
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51 | int ret; |
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52 | |||
53 | if (old_mem->mem_type != TTM_PL_SYSTEM) { |
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54 | ttm_tt_unbind(ttm); |
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55 | ttm_bo_free_old_node(bo); |
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56 | ttm_flag_masked(&old_mem->placement, TTM_PL_FLAG_SYSTEM, |
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57 | TTM_PL_MASK_MEM); |
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58 | old_mem->mem_type = TTM_PL_SYSTEM; |
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59 | } |
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60 | |||
61 | ret = ttm_tt_set_placement_caching(ttm, new_mem->placement); |
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62 | if (unlikely(ret != 0)) |
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63 | return ret; |
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64 | |||
65 | if (new_mem->mem_type != TTM_PL_SYSTEM) { |
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66 | ret = ttm_tt_bind(ttm, new_mem); |
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67 | if (unlikely(ret != 0)) |
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68 | return ret; |
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69 | } |
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70 | |||
71 | *old_mem = *new_mem; |
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72 | new_mem->mm_node = NULL; |
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73 | |||
74 | return 0; |
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75 | } |
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76 | EXPORT_SYMBOL(ttm_bo_move_ttm); |
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77 | |||
78 | int ttm_mem_io_lock(struct ttm_mem_type_manager *man, bool interruptible) |
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79 | { |
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80 | if (likely(man->io_reserve_fastpath)) |
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81 | return 0; |
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82 | |||
83 | if (interruptible) |
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84 | return mutex_lock_interruptible(&man->io_reserve_mutex); |
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85 | |||
86 | mutex_lock(&man->io_reserve_mutex); |
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87 | return 0; |
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88 | } |
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89 | EXPORT_SYMBOL(ttm_mem_io_lock); |
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90 | |||
91 | void ttm_mem_io_unlock(struct ttm_mem_type_manager *man) |
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92 | { |
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93 | if (likely(man->io_reserve_fastpath)) |
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94 | return; |
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95 | |||
96 | mutex_unlock(&man->io_reserve_mutex); |
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97 | } |
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98 | EXPORT_SYMBOL(ttm_mem_io_unlock); |
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99 | |||
100 | static int ttm_mem_io_evict(struct ttm_mem_type_manager *man) |
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101 | { |
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102 | struct ttm_buffer_object *bo; |
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103 | |||
104 | if (!man->use_io_reserve_lru || list_empty(&man->io_reserve_lru)) |
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105 | return -EAGAIN; |
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106 | |||
107 | bo = list_first_entry(&man->io_reserve_lru, |
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108 | struct ttm_buffer_object, |
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109 | io_reserve_lru); |
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110 | list_del_init(&bo->io_reserve_lru); |
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111 | ttm_bo_unmap_virtual_locked(bo); |
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112 | |||
113 | return 0; |
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114 | } |
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115 | |||
116 | |||
117 | int ttm_mem_io_reserve(struct ttm_bo_device *bdev, |
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118 | struct ttm_mem_reg *mem) |
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119 | { |
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120 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; |
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121 | int ret = 0; |
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122 | |||
123 | if (!bdev->driver->io_mem_reserve) |
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124 | return 0; |
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125 | if (likely(man->io_reserve_fastpath)) |
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126 | return bdev->driver->io_mem_reserve(bdev, mem); |
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127 | |||
128 | if (bdev->driver->io_mem_reserve && |
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129 | mem->bus.io_reserved_count++ == 0) { |
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130 | retry: |
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131 | ret = bdev->driver->io_mem_reserve(bdev, mem); |
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132 | if (ret == -EAGAIN) { |
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133 | ret = ttm_mem_io_evict(man); |
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134 | if (ret == 0) |
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135 | goto retry; |
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136 | } |
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137 | } |
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138 | return ret; |
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139 | } |
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140 | EXPORT_SYMBOL(ttm_mem_io_reserve); |
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141 | |||
142 | void ttm_mem_io_free(struct ttm_bo_device *bdev, |
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143 | struct ttm_mem_reg *mem) |
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144 | { |
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145 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; |
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146 | |||
147 | if (likely(man->io_reserve_fastpath)) |
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148 | return; |
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149 | |||
150 | if (bdev->driver->io_mem_reserve && |
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151 | --mem->bus.io_reserved_count == 0 && |
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152 | bdev->driver->io_mem_free) |
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153 | bdev->driver->io_mem_free(bdev, mem); |
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154 | |||
155 | } |
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156 | EXPORT_SYMBOL(ttm_mem_io_free); |
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157 | |||
158 | int ttm_mem_io_reserve_vm(struct ttm_buffer_object *bo) |
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159 | { |
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160 | struct ttm_mem_reg *mem = &bo->mem; |
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161 | int ret; |
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162 | |||
163 | if (!mem->bus.io_reserved_vm) { |
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164 | struct ttm_mem_type_manager *man = |
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165 | &bo->bdev->man[mem->mem_type]; |
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166 | |||
167 | ret = ttm_mem_io_reserve(bo->bdev, mem); |
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168 | if (unlikely(ret != 0)) |
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169 | return ret; |
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170 | mem->bus.io_reserved_vm = true; |
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171 | if (man->use_io_reserve_lru) |
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172 | list_add_tail(&bo->io_reserve_lru, |
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173 | &man->io_reserve_lru); |
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174 | } |
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175 | return 0; |
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176 | } |
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177 | |||
178 | void ttm_mem_io_free_vm(struct ttm_buffer_object *bo) |
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179 | { |
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180 | struct ttm_mem_reg *mem = &bo->mem; |
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181 | |||
182 | if (mem->bus.io_reserved_vm) { |
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183 | mem->bus.io_reserved_vm = false; |
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184 | list_del_init(&bo->io_reserve_lru); |
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185 | ttm_mem_io_free(bo->bdev, mem); |
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186 | } |
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187 | } |
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188 | |||
189 | int ttm_mem_reg_ioremap(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem, |
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190 | void **virtual) |
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191 | { |
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192 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; |
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193 | int ret; |
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194 | void *addr; |
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195 | |||
196 | *virtual = NULL; |
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197 | (void) ttm_mem_io_lock(man, false); |
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198 | ret = ttm_mem_io_reserve(bdev, mem); |
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199 | ttm_mem_io_unlock(man); |
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200 | if (ret || !mem->bus.is_iomem) |
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201 | return ret; |
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202 | |||
203 | if (mem->bus.addr) { |
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204 | addr = mem->bus.addr; |
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205 | } else { |
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206 | if (mem->placement & TTM_PL_FLAG_WC) |
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207 | addr = ioremap_wc(mem->bus.base + mem->bus.offset, mem->bus.size); |
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208 | else |
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209 | addr = ioremap_nocache(mem->bus.base + mem->bus.offset, mem->bus.size); |
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210 | if (!addr) { |
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211 | (void) ttm_mem_io_lock(man, false); |
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212 | ttm_mem_io_free(bdev, mem); |
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213 | ttm_mem_io_unlock(man); |
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214 | return -ENOMEM; |
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215 | } |
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216 | } |
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217 | *virtual = addr; |
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218 | return 0; |
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219 | } |
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220 | |||
221 | void ttm_mem_reg_iounmap(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem, |
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222 | void *virtual) |
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223 | { |
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224 | struct ttm_mem_type_manager *man; |
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225 | |||
226 | man = &bdev->man[mem->mem_type]; |
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227 | |||
228 | if (virtual && mem->bus.addr == NULL) |
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229 | iounmap(virtual); |
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230 | (void) ttm_mem_io_lock(man, false); |
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231 | ttm_mem_io_free(bdev, mem); |
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232 | ttm_mem_io_unlock(man); |
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233 | } |
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234 | |||
235 | static int ttm_copy_io_page(void *dst, void *src, unsigned long page) |
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236 | { |
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237 | uint32_t *dstP = |
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238 | (uint32_t *) ((unsigned long)dst + (page << PAGE_SHIFT)); |
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239 | uint32_t *srcP = |
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240 | (uint32_t *) ((unsigned long)src + (page << PAGE_SHIFT)); |
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241 | |||
242 | int i; |
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243 | for (i = 0; i < PAGE_SIZE / sizeof(uint32_t); ++i) |
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244 | iowrite32(ioread32(srcP++), dstP++); |
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245 | return 0; |
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246 | } |
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247 | |||
248 | static int ttm_copy_io_ttm_page(struct ttm_tt *ttm, void *src, |
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249 | unsigned long page, |
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250 | pgprot_t prot) |
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251 | { |
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252 | struct page *d = ttm->pages[page]; |
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253 | void *dst; |
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254 | |||
255 | if (!d) |
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256 | return -ENOMEM; |
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257 | |||
258 | src = (void *)((unsigned long)src + (page << PAGE_SHIFT)); |
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259 | |||
260 | #ifdef CONFIG_X86 |
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261 | dst = kmap_atomic_prot(d, prot); |
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262 | #else |
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263 | if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL)) |
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264 | dst = vmap(&d, 1, 0, prot); |
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265 | else |
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266 | dst = kmap(d); |
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267 | #endif |
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268 | if (!dst) |
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269 | return -ENOMEM; |
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270 | |||
271 | memcpy_fromio(dst, src, PAGE_SIZE); |
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272 | |||
273 | #ifdef CONFIG_X86 |
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274 | kunmap_atomic(dst); |
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275 | #else |
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276 | if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL)) |
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277 | vunmap(dst); |
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278 | else |
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279 | kunmap(d); |
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280 | #endif |
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281 | |||
282 | return 0; |
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283 | } |
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284 | |||
285 | static int ttm_copy_ttm_io_page(struct ttm_tt *ttm, void *dst, |
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286 | unsigned long page, |
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287 | pgprot_t prot) |
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288 | { |
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289 | struct page *s = ttm->pages[page]; |
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290 | void *src; |
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291 | |||
292 | if (!s) |
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293 | return -ENOMEM; |
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294 | |||
295 | dst = (void *)((unsigned long)dst + (page << PAGE_SHIFT)); |
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296 | #ifdef CONFIG_X86 |
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297 | src = kmap_atomic_prot(s, prot); |
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298 | #else |
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299 | if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL)) |
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300 | src = vmap(&s, 1, 0, prot); |
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301 | else |
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302 | src = kmap(s); |
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303 | #endif |
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304 | if (!src) |
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305 | return -ENOMEM; |
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306 | |||
307 | memcpy_toio(dst, src, PAGE_SIZE); |
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308 | |||
309 | #ifdef CONFIG_X86 |
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310 | kunmap_atomic(src); |
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311 | #else |
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312 | if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL)) |
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313 | vunmap(src); |
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314 | else |
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315 | kunmap(s); |
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316 | #endif |
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317 | |||
318 | return 0; |
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319 | } |
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320 | |||
321 | int ttm_bo_move_memcpy(struct ttm_buffer_object *bo, |
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322 | bool evict, bool no_wait_gpu, |
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323 | struct ttm_mem_reg *new_mem) |
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324 | { |
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325 | struct ttm_bo_device *bdev = bo->bdev; |
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326 | struct ttm_mem_type_manager *man = &bdev->man[new_mem->mem_type]; |
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327 | struct ttm_tt *ttm = bo->ttm; |
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328 | struct ttm_mem_reg *old_mem = &bo->mem; |
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329 | struct ttm_mem_reg old_copy = *old_mem; |
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330 | void *old_iomap; |
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331 | void *new_iomap; |
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332 | int ret; |
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333 | unsigned long i; |
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334 | unsigned long page; |
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335 | unsigned long add = 0; |
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336 | int dir; |
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337 | |||
338 | ret = ttm_mem_reg_ioremap(bdev, old_mem, &old_iomap); |
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339 | if (ret) |
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340 | return ret; |
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341 | ret = ttm_mem_reg_ioremap(bdev, new_mem, &new_iomap); |
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342 | if (ret) |
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343 | goto out; |
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344 | |||
345 | if (old_iomap == NULL && new_iomap == NULL) |
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346 | goto out2; |
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347 | if (old_iomap == NULL && ttm == NULL) |
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348 | goto out2; |
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349 | |||
350 | if (ttm->state == tt_unpopulated) { |
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351 | ret = ttm->bdev->driver->ttm_tt_populate(ttm); |
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352 | if (ret) { |
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353 | /* if we fail here don't nuke the mm node |
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354 | * as the bo still owns it */ |
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355 | old_copy.mm_node = NULL; |
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356 | goto out1; |
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357 | } |
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358 | } |
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359 | |||
360 | add = 0; |
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361 | dir = 1; |
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362 | |||
363 | if ((old_mem->mem_type == new_mem->mem_type) && |
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364 | (new_mem->start < old_mem->start + old_mem->size)) { |
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365 | dir = -1; |
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366 | add = new_mem->num_pages - 1; |
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367 | } |
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368 | |||
369 | for (i = 0; i < new_mem->num_pages; ++i) { |
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370 | page = i * dir + add; |
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371 | if (old_iomap == NULL) { |
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372 | pgprot_t prot = ttm_io_prot(old_mem->placement, |
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373 | PAGE_KERNEL); |
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374 | ret = ttm_copy_ttm_io_page(ttm, new_iomap, page, |
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375 | prot); |
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376 | } else if (new_iomap == NULL) { |
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377 | pgprot_t prot = ttm_io_prot(new_mem->placement, |
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378 | PAGE_KERNEL); |
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379 | ret = ttm_copy_io_ttm_page(ttm, old_iomap, page, |
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380 | prot); |
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381 | } else |
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382 | ret = ttm_copy_io_page(new_iomap, old_iomap, page); |
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383 | if (ret) { |
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384 | /* failing here, means keep old copy as-is */ |
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385 | old_copy.mm_node = NULL; |
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386 | goto out1; |
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387 | } |
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388 | } |
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389 | mb(); |
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390 | out2: |
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391 | old_copy = *old_mem; |
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392 | *old_mem = *new_mem; |
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393 | new_mem->mm_node = NULL; |
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394 | |||
395 | if ((man->flags & TTM_MEMTYPE_FLAG_FIXED) && (ttm != NULL)) { |
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396 | ttm_tt_unbind(ttm); |
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397 | ttm_tt_destroy(ttm); |
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398 | bo->ttm = NULL; |
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399 | } |
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400 | |||
401 | out1: |
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402 | ttm_mem_reg_iounmap(bdev, old_mem, new_iomap); |
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403 | out: |
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404 | ttm_mem_reg_iounmap(bdev, &old_copy, old_iomap); |
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405 | ttm_bo_mem_put(bo, &old_copy); |
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406 | return ret; |
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407 | } |
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408 | EXPORT_SYMBOL(ttm_bo_move_memcpy); |
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409 | |||
410 | static void ttm_transfered_destroy(struct ttm_buffer_object *bo) |
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411 | { |
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412 | kfree(bo); |
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413 | } |
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414 | |||
415 | /** |
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416 | * ttm_buffer_object_transfer |
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417 | * |
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418 | * @bo: A pointer to a struct ttm_buffer_object. |
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419 | * @new_obj: A pointer to a pointer to a newly created ttm_buffer_object, |
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420 | * holding the data of @bo with the old placement. |
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421 | * |
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422 | * This is a utility function that may be called after an accelerated move |
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423 | * has been scheduled. A new buffer object is created as a placeholder for |
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424 | * the old data while it's being copied. When that buffer object is idle, |
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425 | * it can be destroyed, releasing the space of the old placement. |
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426 | * Returns: |
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427 | * !0: Failure. |
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428 | */ |
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429 | |||
430 | static int ttm_buffer_object_transfer(struct ttm_buffer_object *bo, |
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431 | struct ttm_buffer_object **new_obj) |
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432 | { |
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433 | struct ttm_buffer_object *fbo; |
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434 | struct ttm_bo_device *bdev = bo->bdev; |
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435 | struct ttm_bo_driver *driver = bdev->driver; |
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436 | int ret; |
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437 | |||
438 | fbo = kmalloc(sizeof(*fbo), GFP_KERNEL); |
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439 | if (!fbo) |
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440 | return -ENOMEM; |
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441 | |||
442 | *fbo = *bo; |
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443 | |||
444 | /** |
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445 | * Fix up members that we shouldn't copy directly: |
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446 | * TODO: Explicit member copy would probably be better here. |
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447 | */ |
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448 | |||
449 | INIT_LIST_HEAD(&fbo->ddestroy); |
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450 | INIT_LIST_HEAD(&fbo->lru); |
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451 | INIT_LIST_HEAD(&fbo->swap); |
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452 | INIT_LIST_HEAD(&fbo->io_reserve_lru); |
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453 | fbo->vm_node = NULL; |
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454 | atomic_set(&fbo->cpu_writers, 0); |
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455 | |||
456 | spin_lock(&bdev->fence_lock); |
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457 | if (bo->sync_obj) |
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458 | fbo->sync_obj = driver->sync_obj_ref(bo->sync_obj); |
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459 | else |
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460 | fbo->sync_obj = NULL; |
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461 | spin_unlock(&bdev->fence_lock); |
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462 | kref_init(&fbo->list_kref); |
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463 | kref_init(&fbo->kref); |
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464 | fbo->destroy = &ttm_transfered_destroy; |
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465 | fbo->acc_size = 0; |
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466 | fbo->resv = &fbo->ttm_resv; |
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467 | reservation_object_init(fbo->resv); |
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468 | ret = ww_mutex_trylock(&fbo->resv->lock); |
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469 | WARN_ON(!ret); |
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470 | |||
471 | *new_obj = fbo; |
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472 | return 0; |
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473 | } |
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474 | |||
475 | pgprot_t ttm_io_prot(uint32_t caching_flags, pgprot_t tmp) |
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476 | { |
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477 | #if defined(__i386__) || defined(__x86_64__) |
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478 | if (caching_flags & TTM_PL_FLAG_WC) |
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479 | tmp = pgprot_writecombine(tmp); |
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480 | else if (boot_cpu_data.x86 > 3) |
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481 | tmp = pgprot_noncached(tmp); |
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482 | |||
483 | #elif defined(__powerpc__) |
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484 | if (!(caching_flags & TTM_PL_FLAG_CACHED)) { |
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485 | pgprot_val(tmp) |= _PAGE_NO_CACHE; |
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486 | if (caching_flags & TTM_PL_FLAG_UNCACHED) |
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487 | pgprot_val(tmp) |= _PAGE_GUARDED; |
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488 | } |
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489 | #endif |
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490 | #if defined(__ia64__) |
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491 | if (caching_flags & TTM_PL_FLAG_WC) |
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492 | tmp = pgprot_writecombine(tmp); |
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493 | else |
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494 | tmp = pgprot_noncached(tmp); |
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495 | #endif |
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496 | #if defined(__sparc__) || defined(__mips__) |
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497 | if (!(caching_flags & TTM_PL_FLAG_CACHED)) |
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498 | tmp = pgprot_noncached(tmp); |
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499 | #endif |
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500 | return tmp; |
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501 | } |
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502 | EXPORT_SYMBOL(ttm_io_prot); |
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503 | |||
504 | static int ttm_bo_ioremap(struct ttm_buffer_object *bo, |
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505 | unsigned long offset, |
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506 | unsigned long size, |
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507 | struct ttm_bo_kmap_obj *map) |
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508 | { |
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509 | struct ttm_mem_reg *mem = &bo->mem; |
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510 | |||
511 | if (bo->mem.bus.addr) { |
||
512 | map->bo_kmap_type = ttm_bo_map_premapped; |
||
513 | map->virtual = (void *)(((u8 *)bo->mem.bus.addr) + offset); |
||
514 | } else { |
||
515 | map->bo_kmap_type = ttm_bo_map_iomap; |
||
516 | if (mem->placement & TTM_PL_FLAG_WC) |
||
517 | map->virtual = ioremap_wc(bo->mem.bus.base + bo->mem.bus.offset + offset, |
||
518 | size); |
||
519 | else |
||
520 | map->virtual = ioremap_nocache(bo->mem.bus.base + bo->mem.bus.offset + offset, |
||
521 | size); |
||
522 | } |
||
523 | return (!map->virtual) ? -ENOMEM : 0; |
||
524 | } |
||
525 | |||
526 | static int ttm_bo_kmap_ttm(struct ttm_buffer_object *bo, |
||
527 | unsigned long start_page, |
||
528 | unsigned long num_pages, |
||
529 | struct ttm_bo_kmap_obj *map) |
||
530 | { |
||
531 | struct ttm_mem_reg *mem = &bo->mem; pgprot_t prot; |
||
532 | struct ttm_tt *ttm = bo->ttm; |
||
533 | int ret; |
||
534 | |||
535 | BUG_ON(!ttm); |
||
536 | |||
537 | if (ttm->state == tt_unpopulated) { |
||
538 | ret = ttm->bdev->driver->ttm_tt_populate(ttm); |
||
539 | if (ret) |
||
540 | return ret; |
||
541 | } |
||
542 | |||
543 | if (num_pages == 1 && (mem->placement & TTM_PL_FLAG_CACHED)) { |
||
544 | /* |
||
545 | * We're mapping a single page, and the desired |
||
546 | * page protection is consistent with the bo. |
||
547 | */ |
||
548 | |||
549 | map->bo_kmap_type = ttm_bo_map_kmap; |
||
550 | map->page = ttm->pages[start_page]; |
||
551 | map->virtual = kmap(map->page); |
||
552 | } else { |
||
553 | /* |
||
554 | * We need to use vmap to get the desired page protection |
||
555 | * or to make the buffer object look contiguous. |
||
556 | */ |
||
557 | prot = (mem->placement & TTM_PL_FLAG_CACHED) ? |
||
558 | PAGE_KERNEL : |
||
559 | ttm_io_prot(mem->placement, PAGE_KERNEL); |
||
560 | map->bo_kmap_type = ttm_bo_map_vmap; |
||
561 | map->virtual = vmap(ttm->pages + start_page, num_pages, |
||
562 | 0, prot); |
||
563 | } |
||
564 | return (!map->virtual) ? -ENOMEM : 0; |
||
565 | } |
||
566 | |||
567 | int ttm_bo_kmap(struct ttm_buffer_object *bo, |
||
568 | unsigned long start_page, unsigned long num_pages, |
||
569 | struct ttm_bo_kmap_obj *map) |
||
570 | { |
||
571 | struct ttm_mem_type_manager *man = |
||
572 | &bo->bdev->man[bo->mem.mem_type]; |
||
573 | unsigned long offset, size; |
||
574 | int ret; |
||
575 | |||
576 | BUG_ON(!list_empty(&bo->swap)); |
||
577 | map->virtual = NULL; |
||
578 | map->bo = bo; |
||
579 | if (num_pages > bo->num_pages) |
||
580 | return -EINVAL; |
||
581 | if (start_page > bo->num_pages) |
||
582 | return -EINVAL; |
||
583 | #if 0 |
||
584 | if (num_pages > 1 && !DRM_SUSER(DRM_CURPROC)) |
||
585 | return -EPERM; |
||
586 | #endif |
||
587 | (void) ttm_mem_io_lock(man, false); |
||
588 | ret = ttm_mem_io_reserve(bo->bdev, &bo->mem); |
||
589 | ttm_mem_io_unlock(man); |
||
590 | if (ret) |
||
591 | return ret; |
||
592 | if (!bo->mem.bus.is_iomem) { |
||
593 | return ttm_bo_kmap_ttm(bo, start_page, num_pages, map); |
||
594 | } else { |
||
595 | offset = start_page << PAGE_SHIFT; |
||
596 | size = num_pages << PAGE_SHIFT; |
||
597 | return ttm_bo_ioremap(bo, offset, size, map); |
||
598 | } |
||
599 | } |
||
600 | EXPORT_SYMBOL(ttm_bo_kmap); |
||
601 | |||
602 | void ttm_bo_kunmap(struct ttm_bo_kmap_obj *map) |
||
603 | { |
||
604 | struct ttm_buffer_object *bo = map->bo; |
||
605 | struct ttm_mem_type_manager *man = |
||
606 | &bo->bdev->man[bo->mem.mem_type]; |
||
607 | |||
608 | if (!map->virtual) |
||
609 | return; |
||
610 | switch (map->bo_kmap_type) { |
||
611 | case ttm_bo_map_iomap: |
||
612 | iounmap(map->virtual); |
||
613 | break; |
||
614 | case ttm_bo_map_vmap: |
||
615 | vunmap(map->virtual); |
||
616 | break; |
||
617 | case ttm_bo_map_kmap: |
||
618 | kunmap(map->page); |
||
619 | break; |
||
620 | case ttm_bo_map_premapped: |
||
621 | break; |
||
622 | default: |
||
623 | BUG(); |
||
624 | } |
||
625 | (void) ttm_mem_io_lock(man, false); |
||
626 | ttm_mem_io_free(map->bo->bdev, &map->bo->mem); |
||
627 | ttm_mem_io_unlock(man); |
||
628 | map->virtual = NULL; |
||
629 | map->page = NULL; |
||
630 | } |
||
631 | EXPORT_SYMBOL(ttm_bo_kunmap); |
||
632 | |||
633 | int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo, |
||
634 | void *sync_obj, |
||
635 | bool evict, |
||
636 | bool no_wait_gpu, |
||
637 | struct ttm_mem_reg *new_mem) |
||
638 | { |
||
639 | struct ttm_bo_device *bdev = bo->bdev; |
||
640 | struct ttm_bo_driver *driver = bdev->driver; |
||
641 | struct ttm_mem_type_manager *man = &bdev->man[new_mem->mem_type]; |
||
642 | struct ttm_mem_reg *old_mem = &bo->mem; |
||
643 | int ret; |
||
644 | struct ttm_buffer_object *ghost_obj; |
||
645 | void *tmp_obj = NULL; |
||
646 | |||
647 | spin_lock(&bdev->fence_lock); |
||
648 | if (bo->sync_obj) { |
||
649 | tmp_obj = bo->sync_obj; |
||
650 | bo->sync_obj = NULL; |
||
651 | } |
||
652 | bo->sync_obj = driver->sync_obj_ref(sync_obj); |
||
653 | if (evict) { |
||
654 | ret = ttm_bo_wait(bo, false, false, false); |
||
655 | spin_unlock(&bdev->fence_lock); |
||
656 | if (tmp_obj) |
||
657 | driver->sync_obj_unref(&tmp_obj); |
||
658 | if (ret) |
||
659 | return ret; |
||
660 | |||
661 | if ((man->flags & TTM_MEMTYPE_FLAG_FIXED) && |
||
662 | (bo->ttm != NULL)) { |
||
663 | ttm_tt_unbind(bo->ttm); |
||
664 | ttm_tt_destroy(bo->ttm); |
||
665 | bo->ttm = NULL; |
||
666 | } |
||
667 | ttm_bo_free_old_node(bo); |
||
668 | } else { |
||
669 | /** |
||
670 | * This should help pipeline ordinary buffer moves. |
||
671 | * |
||
672 | * Hang old buffer memory on a new buffer object, |
||
673 | * and leave it to be released when the GPU |
||
674 | * operation has completed. |
||
675 | */ |
||
676 | |||
677 | set_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags); |
||
678 | spin_unlock(&bdev->fence_lock); |
||
679 | if (tmp_obj) |
||
680 | driver->sync_obj_unref(&tmp_obj); |
||
681 | |||
682 | ret = ttm_buffer_object_transfer(bo, &ghost_obj); |
||
683 | if (ret) |
||
684 | return ret; |
||
685 | |||
686 | /** |
||
687 | * If we're not moving to fixed memory, the TTM object |
||
688 | * needs to stay alive. Otherwhise hang it on the ghost |
||
689 | * bo to be unbound and destroyed. |
||
690 | */ |
||
691 | |||
692 | if (!(man->flags & TTM_MEMTYPE_FLAG_FIXED)) |
||
693 | ghost_obj->ttm = NULL; |
||
694 | else |
||
695 | bo->ttm = NULL; |
||
696 | |||
697 | ttm_bo_unreserve(ghost_obj); |
||
698 | ttm_bo_unref(&ghost_obj); |
||
699 | } |
||
700 | |||
701 | *old_mem = *new_mem; |
||
702 | new_mem->mm_node = NULL; |
||
703 | |||
704 | return 0; |
||
705 | } |
||
706 | EXPORT_SYMBOL(ttm_bo_move_accel_cleanup);><>><>>>><>><>>><>><> |