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1117 | serge | 1 | /* |
2 | * Copyright 2008 Advanced Micro Devices, Inc. |
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3 | * Copyright 2008 Red Hat Inc. |
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4 | * Copyright 2009 Jerome Glisse. |
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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 "Software"), |
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8 | * to deal in the Software without restriction, including without limitation |
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9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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10 | * and/or sell copies of the Software, and to permit persons to whom the |
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11 | * Software is furnished to do so, subject to the following conditions: |
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12 | * |
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13 | * The above copyright notice and this permission notice shall be included in |
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14 | * all copies or substantial portions of the Software. |
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15 | * |
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16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
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20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
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21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
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22 | * OTHER DEALINGS IN THE SOFTWARE. |
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23 | * |
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24 | * Authors: Dave Airlie |
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25 | * Alex Deucher |
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26 | * Jerome Glisse |
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27 | */ |
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28 | //#include |
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29 | //#include "drmP.h" |
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30 | #include "radeon_drm.h" |
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31 | #include "radeon_reg.h" |
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32 | #include "radeon.h" |
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33 | #include "atom.h" |
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34 | |||
35 | #if 0 |
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36 | int radeon_debugfs_ib_init(struct radeon_device *rdev); |
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37 | |||
38 | /* |
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39 | * IB. |
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40 | */ |
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41 | int radeon_ib_get(struct radeon_device *rdev, struct radeon_ib **ib) |
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42 | { |
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43 | struct radeon_fence *fence; |
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44 | struct radeon_ib *nib; |
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45 | unsigned long i; |
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46 | int r = 0; |
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47 | |||
48 | *ib = NULL; |
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49 | r = radeon_fence_create(rdev, &fence); |
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50 | if (r) { |
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51 | DRM_ERROR("failed to create fence for new IB\n"); |
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52 | return r; |
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53 | } |
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54 | mutex_lock(&rdev->ib_pool.mutex); |
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55 | i = find_first_zero_bit(rdev->ib_pool.alloc_bm, RADEON_IB_POOL_SIZE); |
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56 | if (i < RADEON_IB_POOL_SIZE) { |
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57 | set_bit(i, rdev->ib_pool.alloc_bm); |
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58 | rdev->ib_pool.ibs[i].length_dw = 0; |
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59 | *ib = &rdev->ib_pool.ibs[i]; |
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60 | goto out; |
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61 | } |
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62 | if (list_empty(&rdev->ib_pool.scheduled_ibs)) { |
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63 | /* we go do nothings here */ |
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64 | DRM_ERROR("all IB allocated none scheduled.\n"); |
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65 | r = -EINVAL; |
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66 | goto out; |
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67 | } |
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68 | /* get the first ib on the scheduled list */ |
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69 | nib = list_entry(rdev->ib_pool.scheduled_ibs.next, |
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70 | struct radeon_ib, list); |
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71 | if (nib->fence == NULL) { |
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72 | /* we go do nothings here */ |
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73 | DRM_ERROR("IB %lu scheduled without a fence.\n", nib->idx); |
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74 | r = -EINVAL; |
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75 | goto out; |
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76 | } |
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77 | r = radeon_fence_wait(nib->fence, false); |
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78 | if (r) { |
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79 | DRM_ERROR("radeon: IB(%lu:0x%016lX:%u)\n", nib->idx, |
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80 | (unsigned long)nib->gpu_addr, nib->length_dw); |
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81 | DRM_ERROR("radeon: GPU lockup detected, fail to get a IB\n"); |
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82 | goto out; |
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83 | } |
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84 | radeon_fence_unref(&nib->fence); |
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85 | nib->length_dw = 0; |
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86 | list_del(&nib->list); |
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87 | INIT_LIST_HEAD(&nib->list); |
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88 | *ib = nib; |
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89 | out: |
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90 | mutex_unlock(&rdev->ib_pool.mutex); |
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91 | if (r) { |
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92 | radeon_fence_unref(&fence); |
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93 | } else { |
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94 | (*ib)->fence = fence; |
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95 | } |
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96 | return r; |
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97 | } |
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98 | |||
99 | void radeon_ib_free(struct radeon_device *rdev, struct radeon_ib **ib) |
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100 | { |
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101 | struct radeon_ib *tmp = *ib; |
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102 | |||
103 | *ib = NULL; |
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104 | if (tmp == NULL) { |
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105 | return; |
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106 | } |
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107 | mutex_lock(&rdev->ib_pool.mutex); |
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108 | if (!list_empty(&tmp->list) && !radeon_fence_signaled(tmp->fence)) { |
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109 | /* IB is scheduled & not signaled don't do anythings */ |
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110 | mutex_unlock(&rdev->ib_pool.mutex); |
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111 | return; |
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112 | } |
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113 | list_del(&tmp->list); |
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114 | INIT_LIST_HEAD(&tmp->list); |
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115 | if (tmp->fence) { |
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116 | radeon_fence_unref(&tmp->fence); |
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117 | } |
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118 | tmp->length_dw = 0; |
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119 | clear_bit(tmp->idx, rdev->ib_pool.alloc_bm); |
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120 | mutex_unlock(&rdev->ib_pool.mutex); |
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121 | } |
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122 | |||
123 | static void radeon_ib_align(struct radeon_device *rdev, struct radeon_ib *ib) |
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124 | { |
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125 | while ((ib->length_dw & rdev->cp.align_mask)) { |
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126 | ib->ptr[ib->length_dw++] = PACKET2(0); |
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127 | } |
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128 | } |
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129 | |||
130 | static void radeon_ib_cpu_flush(struct radeon_device *rdev, |
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131 | struct radeon_ib *ib) |
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132 | { |
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133 | unsigned long tmp; |
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134 | unsigned i; |
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135 | |||
136 | /* To force CPU cache flush ugly but seems reliable */ |
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137 | for (i = 0; i < ib->length_dw; i += (rdev->cp.align_mask + 1)) { |
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138 | tmp = readl(&ib->ptr[i]); |
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139 | } |
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140 | } |
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141 | |||
142 | int radeon_ib_schedule(struct radeon_device *rdev, struct radeon_ib *ib) |
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143 | { |
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144 | int r = 0; |
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145 | |||
146 | mutex_lock(&rdev->ib_pool.mutex); |
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147 | radeon_ib_align(rdev, ib); |
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148 | radeon_ib_cpu_flush(rdev, ib); |
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149 | if (!ib->length_dw || !rdev->cp.ready) { |
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150 | /* TODO: Nothings in the ib we should report. */ |
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151 | mutex_unlock(&rdev->ib_pool.mutex); |
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152 | DRM_ERROR("radeon: couldn't schedule IB(%lu).\n", ib->idx); |
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153 | return -EINVAL; |
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154 | } |
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155 | /* 64 dwords should be enought for fence too */ |
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156 | r = radeon_ring_lock(rdev, 64); |
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157 | if (r) { |
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158 | DRM_ERROR("radeon: scheduling IB failled (%d).\n", r); |
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159 | mutex_unlock(&rdev->ib_pool.mutex); |
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160 | return r; |
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161 | } |
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162 | radeon_ring_write(rdev, PACKET0(RADEON_CP_IB_BASE, 1)); |
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163 | radeon_ring_write(rdev, ib->gpu_addr); |
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164 | radeon_ring_write(rdev, ib->length_dw); |
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165 | radeon_fence_emit(rdev, ib->fence); |
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166 | radeon_ring_unlock_commit(rdev); |
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167 | list_add_tail(&ib->list, &rdev->ib_pool.scheduled_ibs); |
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168 | mutex_unlock(&rdev->ib_pool.mutex); |
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169 | return 0; |
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170 | } |
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171 | |||
172 | int radeon_ib_pool_init(struct radeon_device *rdev) |
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173 | { |
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174 | void *ptr; |
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175 | uint64_t gpu_addr; |
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176 | int i; |
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177 | int r = 0; |
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178 | |||
179 | /* Allocate 1M object buffer */ |
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180 | INIT_LIST_HEAD(&rdev->ib_pool.scheduled_ibs); |
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181 | r = radeon_object_create(rdev, NULL, RADEON_IB_POOL_SIZE*64*1024, |
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182 | true, RADEON_GEM_DOMAIN_GTT, |
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183 | false, &rdev->ib_pool.robj); |
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184 | if (r) { |
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185 | DRM_ERROR("radeon: failed to ib pool (%d).\n", r); |
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186 | return r; |
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187 | } |
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188 | r = radeon_object_pin(rdev->ib_pool.robj, RADEON_GEM_DOMAIN_GTT, &gpu_addr); |
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189 | if (r) { |
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190 | DRM_ERROR("radeon: failed to pin ib pool (%d).\n", r); |
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191 | return r; |
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192 | } |
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193 | r = radeon_object_kmap(rdev->ib_pool.robj, &ptr); |
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194 | if (r) { |
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195 | DRM_ERROR("radeon: failed to map ib poll (%d).\n", r); |
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196 | return r; |
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197 | } |
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198 | for (i = 0; i < RADEON_IB_POOL_SIZE; i++) { |
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199 | unsigned offset; |
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200 | |||
201 | offset = i * 64 * 1024; |
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202 | rdev->ib_pool.ibs[i].gpu_addr = gpu_addr + offset; |
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203 | rdev->ib_pool.ibs[i].ptr = ptr + offset; |
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204 | rdev->ib_pool.ibs[i].idx = i; |
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205 | rdev->ib_pool.ibs[i].length_dw = 0; |
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206 | INIT_LIST_HEAD(&rdev->ib_pool.ibs[i].list); |
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207 | } |
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208 | bitmap_zero(rdev->ib_pool.alloc_bm, RADEON_IB_POOL_SIZE); |
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209 | rdev->ib_pool.ready = true; |
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210 | DRM_INFO("radeon: ib pool ready.\n"); |
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211 | if (radeon_debugfs_ib_init(rdev)) { |
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212 | DRM_ERROR("Failed to register debugfs file for IB !\n"); |
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213 | } |
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214 | return r; |
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215 | } |
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216 | |||
217 | void radeon_ib_pool_fini(struct radeon_device *rdev) |
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218 | { |
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219 | if (!rdev->ib_pool.ready) { |
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220 | return; |
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221 | } |
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222 | mutex_lock(&rdev->ib_pool.mutex); |
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223 | bitmap_zero(rdev->ib_pool.alloc_bm, RADEON_IB_POOL_SIZE); |
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224 | if (rdev->ib_pool.robj) { |
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225 | radeon_object_kunmap(rdev->ib_pool.robj); |
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226 | radeon_object_unref(&rdev->ib_pool.robj); |
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227 | rdev->ib_pool.robj = NULL; |
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228 | } |
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229 | mutex_unlock(&rdev->ib_pool.mutex); |
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230 | } |
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231 | |||
232 | int radeon_ib_test(struct radeon_device *rdev) |
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233 | { |
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234 | struct radeon_ib *ib; |
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235 | uint32_t scratch; |
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236 | uint32_t tmp = 0; |
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237 | unsigned i; |
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238 | int r; |
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239 | |||
240 | r = radeon_scratch_get(rdev, &scratch); |
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241 | if (r) { |
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242 | DRM_ERROR("radeon: failed to get scratch reg (%d).\n", r); |
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243 | return r; |
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244 | } |
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245 | WREG32(scratch, 0xCAFEDEAD); |
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246 | r = radeon_ib_get(rdev, &ib); |
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247 | if (r) { |
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248 | return r; |
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249 | } |
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250 | ib->ptr[0] = PACKET0(scratch, 0); |
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251 | ib->ptr[1] = 0xDEADBEEF; |
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252 | ib->ptr[2] = PACKET2(0); |
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253 | ib->ptr[3] = PACKET2(0); |
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254 | ib->ptr[4] = PACKET2(0); |
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255 | ib->ptr[5] = PACKET2(0); |
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256 | ib->ptr[6] = PACKET2(0); |
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257 | ib->ptr[7] = PACKET2(0); |
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258 | ib->length_dw = 8; |
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259 | r = radeon_ib_schedule(rdev, ib); |
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260 | if (r) { |
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261 | radeon_scratch_free(rdev, scratch); |
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262 | radeon_ib_free(rdev, &ib); |
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263 | return r; |
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264 | } |
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265 | r = radeon_fence_wait(ib->fence, false); |
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266 | if (r) { |
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267 | return r; |
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268 | } |
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269 | for (i = 0; i < rdev->usec_timeout; i++) { |
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270 | tmp = RREG32(scratch); |
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271 | if (tmp == 0xDEADBEEF) { |
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272 | break; |
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273 | } |
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274 | DRM_UDELAY(1); |
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275 | } |
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276 | if (i < rdev->usec_timeout) { |
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277 | DRM_INFO("ib test succeeded in %u usecs\n", i); |
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278 | } else { |
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279 | DRM_ERROR("radeon: ib test failed (sracth(0x%04X)=0x%08X)\n", |
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280 | scratch, tmp); |
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281 | r = -EINVAL; |
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282 | } |
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283 | radeon_scratch_free(rdev, scratch); |
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284 | radeon_ib_free(rdev, &ib); |
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285 | return r; |
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286 | } |
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287 | |||
288 | #endif |
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289 | |||
290 | |||
291 | /* |
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292 | * Ring. |
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293 | */ |
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294 | void radeon_ring_free_size(struct radeon_device *rdev) |
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295 | { |
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296 | rdev->cp.rptr = RREG32(RADEON_CP_RB_RPTR); |
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297 | /* This works because ring_size is a power of 2 */ |
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298 | rdev->cp.ring_free_dw = (rdev->cp.rptr + (rdev->cp.ring_size / 4)); |
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299 | rdev->cp.ring_free_dw -= rdev->cp.wptr; |
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300 | rdev->cp.ring_free_dw &= rdev->cp.ptr_mask; |
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301 | if (!rdev->cp.ring_free_dw) { |
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302 | rdev->cp.ring_free_dw = rdev->cp.ring_size / 4; |
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303 | } |
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304 | } |
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305 | |||
306 | int radeon_ring_lock(struct radeon_device *rdev, unsigned ndw) |
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307 | { |
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308 | int r; |
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309 | |||
310 | /* Align requested size with padding so unlock_commit can |
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311 | * pad safely */ |
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312 | ndw = (ndw + rdev->cp.align_mask) & ~rdev->cp.align_mask; |
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313 | // mutex_lock(&rdev->cp.mutex); |
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314 | while (ndw > (rdev->cp.ring_free_dw - 1)) { |
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315 | radeon_ring_free_size(rdev); |
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316 | if (ndw < rdev->cp.ring_free_dw) { |
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317 | break; |
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318 | } |
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319 | delay(1); |
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320 | |||
321 | // r = radeon_fence_wait_next(rdev); |
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322 | // if (r) { |
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323 | // mutex_unlock(&rdev->cp.mutex); |
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324 | // return r; |
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325 | // } |
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326 | } |
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327 | rdev->cp.count_dw = ndw; |
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328 | rdev->cp.wptr_old = rdev->cp.wptr; |
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329 | return 0; |
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330 | } |
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331 | |||
332 | void radeon_ring_unlock_commit(struct radeon_device *rdev) |
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333 | { |
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334 | unsigned count_dw_pad; |
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335 | unsigned i; |
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336 | |||
337 | /* We pad to match fetch size */ |
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338 | count_dw_pad = (rdev->cp.align_mask + 1) - |
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339 | (rdev->cp.wptr & rdev->cp.align_mask); |
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340 | for (i = 0; i < count_dw_pad; i++) { |
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341 | radeon_ring_write(rdev, PACKET2(0)); |
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342 | } |
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343 | DRM_MEMORYBARRIER(); |
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344 | WREG32(RADEON_CP_RB_WPTR, rdev->cp.wptr); |
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345 | (void)RREG32(RADEON_CP_RB_WPTR); |
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346 | // mutex_unlock(&rdev->cp.mutex); |
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347 | } |
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348 | |||
349 | void radeon_ring_unlock_undo(struct radeon_device *rdev) |
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350 | { |
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351 | rdev->cp.wptr = rdev->cp.wptr_old; |
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352 | // mutex_unlock(&rdev->cp.mutex); |
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353 | } |
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354 | |||
355 | |||
356 | int radeon_ring_test(struct radeon_device *rdev) |
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357 | { |
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358 | uint32_t scratch; |
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359 | uint32_t tmp = 0; |
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360 | unsigned i; |
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361 | int r; |
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362 | |||
363 | dbgprintf("%s\n\r",__FUNCTION__); |
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364 | |||
365 | r = radeon_scratch_get(rdev, &scratch); |
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366 | if (r) { |
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367 | DRM_ERROR("radeon: cp failed to get scratch reg (%d).\n", r); |
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368 | return r; |
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369 | } |
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370 | WREG32(scratch, 0xCAFEDEAD); |
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371 | r = radeon_ring_lock(rdev, 2); |
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372 | if (r) { |
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373 | DRM_ERROR("radeon: cp failed to lock ring (%d).\n", r); |
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374 | radeon_scratch_free(rdev, scratch); |
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375 | return r; |
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376 | } |
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377 | radeon_ring_write(rdev, PACKET0(scratch, 0)); |
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378 | radeon_ring_write(rdev, 0xDEADBEEF); |
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379 | radeon_ring_unlock_commit(rdev); |
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380 | for (i = 0; i < rdev->usec_timeout; i++) { |
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381 | tmp = RREG32(scratch); |
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382 | if (tmp == 0xDEADBEEF) { |
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383 | break; |
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384 | } |
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385 | DRM_UDELAY(1); |
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386 | } |
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387 | if (i < rdev->usec_timeout) { |
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388 | DRM_INFO("ring test succeeded in %d usecs\n", i); |
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389 | } else { |
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390 | DRM_ERROR("radeon: ring test failed (sracth(0x%04X)=0x%08X)\n", |
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391 | scratch, tmp); |
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392 | r = -EINVAL; |
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393 | } |
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394 | radeon_scratch_free(rdev, scratch); |
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395 | return r; |
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396 | } |
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397 | |||
398 | |||
399 | int radeon_ring_init(struct radeon_device *rdev, unsigned ring_size) |
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400 | { |
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401 | int r; |
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402 | |||
403 | dbgprintf("%s\n\r",__FUNCTION__); |
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404 | |||
405 | rdev->cp.ring_size = ring_size; |
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406 | |||
407 | #if 0 |
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408 | /* Allocate ring buffer */ |
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409 | if (rdev->cp.ring_obj == NULL) { |
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410 | r = radeon_object_create(rdev, NULL, rdev->cp.ring_size, |
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411 | true, |
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412 | RADEON_GEM_DOMAIN_GTT, |
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413 | false, |
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414 | &rdev->cp.ring_obj); |
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415 | if (r) { |
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416 | DRM_ERROR("radeon: failed to create ring buffer (%d).\n", r); |
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417 | // mutex_unlock(&rdev->cp.mutex); |
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418 | return r; |
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419 | } |
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420 | r = radeon_object_pin(rdev->cp.ring_obj, |
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421 | RADEON_GEM_DOMAIN_GTT, |
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422 | &rdev->cp.gpu_addr); |
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423 | if (r) { |
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424 | DRM_ERROR("radeon: failed to pin ring buffer (%d).\n", r); |
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425 | // mutex_unlock(&rdev->cp.mutex); |
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426 | return r; |
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427 | } |
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428 | r = radeon_object_kmap(rdev->cp.ring_obj, |
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429 | (void **)&rdev->cp.ring); |
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430 | if (r) { |
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431 | DRM_ERROR("radeon: failed to map ring buffer (%d).\n", r); |
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432 | // mutex_unlock(&rdev->cp.mutex); |
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433 | return r; |
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434 | } |
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435 | } |
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436 | #endif |
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437 | |||
438 | rdev->cp.ring = CreateRingBuffer( ring_size, PG_SW); |
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439 | rdev->cp.gpu_addr = GetPgAddr(rdev->cp.ring); |
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440 | rdev->cp.ptr_mask = (rdev->cp.ring_size / 4) - 1; |
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441 | rdev->cp.ring_free_dw = rdev->cp.ring_size / 4; |
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442 | return 0; |
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443 | } |
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444 | |||
445 | void radeon_ring_fini(struct radeon_device *rdev) |
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446 | { |
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447 | // mutex_lock(&rdev->cp.mutex); |
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448 | if (rdev->cp.ring_obj) { |
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449 | // radeon_object_kunmap(rdev->cp.ring_obj); |
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450 | // radeon_object_unpin(rdev->cp.ring_obj); |
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451 | // radeon_object_unref(&rdev->cp.ring_obj); |
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452 | rdev->cp.ring = NULL; |
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453 | rdev->cp.ring_obj = NULL; |
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454 | } |
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455 | // mutex_unlock(&rdev->cp.mutex); |
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456 | } |
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457 | |||
458 | |||
459 | /* |
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460 | * Debugfs info |
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461 | */ |
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462 | #if defined(CONFIG_DEBUG_FS) |
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463 | static int radeon_debugfs_ib_info(struct seq_file *m, void *data) |
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464 | { |
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465 | struct drm_info_node *node = (struct drm_info_node *) m->private; |
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466 | struct radeon_ib *ib = node->info_ent->data; |
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467 | unsigned i; |
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468 | |||
469 | if (ib == NULL) { |
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470 | return 0; |
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471 | } |
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472 | seq_printf(m, "IB %04lu\n", ib->idx); |
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473 | seq_printf(m, "IB fence %p\n", ib->fence); |
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474 | seq_printf(m, "IB size %05u dwords\n", ib->length_dw); |
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475 | for (i = 0; i < ib->length_dw; i++) { |
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476 | seq_printf(m, "[%05u]=0x%08X\n", i, ib->ptr[i]); |
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477 | } |
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478 | return 0; |
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479 | } |
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480 | |||
481 | static struct drm_info_list radeon_debugfs_ib_list[RADEON_IB_POOL_SIZE]; |
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482 | static char radeon_debugfs_ib_names[RADEON_IB_POOL_SIZE][32]; |
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483 | #endif |
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484 | |||
485 | int radeon_debugfs_ib_init(struct radeon_device *rdev) |
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486 | { |
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487 | #if defined(CONFIG_DEBUG_FS) |
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488 | unsigned i; |
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489 | |||
490 | for (i = 0; i < RADEON_IB_POOL_SIZE; i++) { |
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491 | sprintf(radeon_debugfs_ib_names[i], "radeon_ib_%04u", i); |
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492 | radeon_debugfs_ib_list[i].name = radeon_debugfs_ib_names[i]; |
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493 | radeon_debugfs_ib_list[i].show = &radeon_debugfs_ib_info; |
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494 | radeon_debugfs_ib_list[i].driver_features = 0; |
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495 | radeon_debugfs_ib_list[i].data = &rdev->ib_pool.ibs[i]; |
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496 | } |
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497 | return radeon_debugfs_add_files(rdev, radeon_debugfs_ib_list, |
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498 | RADEON_IB_POOL_SIZE); |
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499 | #else |
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500 | return 0; |
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501 | #endif |
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502 | } |
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503 | |||
504 | |||
505 | int drm_order(unsigned long size) |
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506 | { |
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507 | int order; |
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508 | unsigned long tmp; |
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509 | |||
510 | for (order = 0, tmp = size >> 1; tmp; tmp >>= 1, order++) ; |
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511 | |||
512 | if (size & (size - 1)) |
||
513 | ++order; |
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514 | |||
515 | return order; |
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516 | }>>>>>>>>>>> |
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517 |