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4075 | Serge | 1 | /************************************************************************** |
2 | * |
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3 | * Copyright © 2011 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 | |||
28 | #include |
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29 | #include "vmwgfx_drv.h" |
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30 | |||
31 | #define VMW_FENCE_WRAP (1 << 31) |
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32 | |||
33 | struct vmw_fence_manager { |
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34 | int num_fence_objects; |
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35 | struct vmw_private *dev_priv; |
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36 | spinlock_t lock; |
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37 | struct list_head fence_list; |
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38 | struct work_struct work; |
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39 | u32 user_fence_size; |
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40 | u32 fence_size; |
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41 | u32 event_fence_action_size; |
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42 | bool fifo_down; |
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43 | struct list_head cleanup_list; |
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44 | uint32_t pending_actions[VMW_ACTION_MAX]; |
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45 | struct mutex goal_irq_mutex; |
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46 | bool goal_irq_on; /* Protected by @goal_irq_mutex */ |
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47 | bool seqno_valid; /* Protected by @lock, and may not be set to true |
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48 | without the @goal_irq_mutex held. */ |
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49 | }; |
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50 | |||
51 | struct vmw_user_fence { |
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52 | struct ttm_base_object base; |
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53 | struct vmw_fence_obj fence; |
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54 | }; |
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55 | |||
56 | /** |
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57 | * struct vmw_event_fence_action - fence action that delivers a drm event. |
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58 | * |
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59 | * @e: A struct drm_pending_event that controls the event delivery. |
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60 | * @action: A struct vmw_fence_action to hook up to a fence. |
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61 | * @fence: A referenced pointer to the fence to keep it alive while @action |
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62 | * hangs on it. |
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63 | * @dev: Pointer to a struct drm_device so we can access the event stuff. |
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64 | * @kref: Both @e and @action has destructors, so we need to refcount. |
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65 | * @size: Size accounted for this object. |
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66 | * @tv_sec: If non-null, the variable pointed to will be assigned |
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67 | * current time tv_sec val when the fence signals. |
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68 | * @tv_usec: Must be set if @tv_sec is set, and the variable pointed to will |
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69 | * be assigned the current time tv_usec val when the fence signals. |
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70 | */ |
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71 | struct vmw_event_fence_action { |
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72 | struct vmw_fence_action action; |
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73 | struct list_head fpriv_head; |
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74 | |||
75 | struct drm_pending_event *event; |
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76 | struct vmw_fence_obj *fence; |
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77 | struct drm_device *dev; |
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78 | |||
79 | uint32_t *tv_sec; |
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80 | uint32_t *tv_usec; |
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81 | }; |
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82 | |||
83 | /** |
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84 | * Note on fencing subsystem usage of irqs: |
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85 | * Typically the vmw_fences_update function is called |
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86 | * |
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87 | * a) When a new fence seqno has been submitted by the fifo code. |
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88 | * b) On-demand when we have waiters. Sleeping waiters will switch on the |
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89 | * ANY_FENCE irq and call vmw_fences_update function each time an ANY_FENCE |
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90 | * irq is received. When the last fence waiter is gone, that IRQ is masked |
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91 | * away. |
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92 | * |
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93 | * In situations where there are no waiters and we don't submit any new fences, |
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94 | * fence objects may not be signaled. This is perfectly OK, since there are |
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95 | * no consumers of the signaled data, but that is NOT ok when there are fence |
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96 | * actions attached to a fence. The fencing subsystem then makes use of the |
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97 | * FENCE_GOAL irq and sets the fence goal seqno to that of the next fence |
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98 | * which has an action attached, and each time vmw_fences_update is called, |
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99 | * the subsystem makes sure the fence goal seqno is updated. |
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100 | * |
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101 | * The fence goal seqno irq is on as long as there are unsignaled fence |
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102 | * objects with actions attached to them. |
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103 | */ |
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104 | |||
105 | static void vmw_fence_obj_destroy_locked(struct kref *kref) |
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106 | { |
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107 | struct vmw_fence_obj *fence = |
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108 | container_of(kref, struct vmw_fence_obj, kref); |
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109 | |||
110 | struct vmw_fence_manager *fman = fence->fman; |
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111 | unsigned int num_fences; |
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112 | |||
113 | list_del_init(&fence->head); |
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114 | num_fences = --fman->num_fence_objects; |
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115 | spin_unlock_irq(&fman->lock); |
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116 | if (fence->destroy) |
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117 | fence->destroy(fence); |
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118 | else |
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119 | kfree(fence); |
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120 | |||
121 | spin_lock_irq(&fman->lock); |
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122 | } |
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123 | |||
124 | |||
125 | /** |
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126 | * Execute signal actions on fences recently signaled. |
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127 | * This is done from a workqueue so we don't have to execute |
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128 | * signal actions from atomic context. |
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129 | */ |
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130 | |||
131 | static void vmw_fence_work_func(struct work_struct *work) |
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132 | { |
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133 | struct vmw_fence_manager *fman = |
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134 | container_of(work, struct vmw_fence_manager, work); |
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135 | struct list_head list; |
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136 | struct vmw_fence_action *action, *next_action; |
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137 | bool seqno_valid; |
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138 | |||
139 | do { |
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140 | INIT_LIST_HEAD(&list); |
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141 | mutex_lock(&fman->goal_irq_mutex); |
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142 | |||
143 | spin_lock_irq(&fman->lock); |
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144 | list_splice_init(&fman->cleanup_list, &list); |
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145 | seqno_valid = fman->seqno_valid; |
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146 | spin_unlock_irq(&fman->lock); |
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147 | |||
148 | if (!seqno_valid && fman->goal_irq_on) { |
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149 | fman->goal_irq_on = false; |
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150 | vmw_goal_waiter_remove(fman->dev_priv); |
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151 | } |
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152 | mutex_unlock(&fman->goal_irq_mutex); |
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153 | |||
154 | if (list_empty(&list)) |
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155 | return; |
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156 | |||
157 | /* |
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158 | * At this point, only we should be able to manipulate the |
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159 | * list heads of the actions we have on the private list. |
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160 | * hence fman::lock not held. |
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161 | */ |
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162 | |||
163 | list_for_each_entry_safe(action, next_action, &list, head) { |
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164 | list_del_init(&action->head); |
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165 | if (action->cleanup) |
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166 | action->cleanup(action); |
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167 | } |
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168 | } while (1); |
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169 | } |
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170 | |||
171 | struct vmw_fence_manager *vmw_fence_manager_init(struct vmw_private *dev_priv) |
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172 | { |
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173 | struct vmw_fence_manager *fman = kzalloc(sizeof(*fman), GFP_KERNEL); |
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174 | |||
175 | if (unlikely(fman == NULL)) |
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176 | return NULL; |
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177 | |||
178 | fman->dev_priv = dev_priv; |
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179 | spin_lock_init(&fman->lock); |
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180 | INIT_LIST_HEAD(&fman->fence_list); |
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181 | INIT_LIST_HEAD(&fman->cleanup_list); |
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182 | INIT_WORK(&fman->work, &vmw_fence_work_func); |
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183 | fman->fifo_down = true; |
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184 | fman->user_fence_size = ttm_round_pot(sizeof(struct vmw_user_fence)); |
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185 | fman->fence_size = ttm_round_pot(sizeof(struct vmw_fence_obj)); |
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186 | fman->event_fence_action_size = |
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187 | ttm_round_pot(sizeof(struct vmw_event_fence_action)); |
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188 | mutex_init(&fman->goal_irq_mutex); |
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189 | |||
190 | return fman; |
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191 | } |
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192 | |||
193 | void vmw_fence_manager_takedown(struct vmw_fence_manager *fman) |
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194 | { |
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195 | unsigned long irq_flags; |
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196 | bool lists_empty; |
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197 | |||
198 | // (void) cancel_work_sync(&fman->work); |
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199 | |||
200 | spin_lock_irqsave(&fman->lock, irq_flags); |
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201 | lists_empty = list_empty(&fman->fence_list) && |
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202 | list_empty(&fman->cleanup_list); |
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203 | spin_unlock_irqrestore(&fman->lock, irq_flags); |
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204 | |||
205 | BUG_ON(!lists_empty); |
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206 | kfree(fman); |
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207 | } |
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208 | |||
209 | static int vmw_fence_obj_init(struct vmw_fence_manager *fman, |
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210 | struct vmw_fence_obj *fence, |
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211 | u32 seqno, |
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212 | uint32_t mask, |
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213 | void (*destroy) (struct vmw_fence_obj *fence)) |
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214 | { |
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215 | unsigned long irq_flags; |
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216 | unsigned int num_fences; |
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217 | int ret = 0; |
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218 | |||
219 | fence->seqno = seqno; |
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220 | INIT_LIST_HEAD(&fence->seq_passed_actions); |
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221 | fence->fman = fman; |
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222 | fence->signaled = 0; |
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223 | fence->signal_mask = mask; |
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224 | kref_init(&fence->kref); |
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225 | fence->destroy = destroy; |
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226 | init_waitqueue_head(&fence->queue); |
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227 | |||
228 | spin_lock_irqsave(&fman->lock, irq_flags); |
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229 | if (unlikely(fman->fifo_down)) { |
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230 | ret = -EBUSY; |
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231 | goto out_unlock; |
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232 | } |
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233 | list_add_tail(&fence->head, &fman->fence_list); |
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234 | num_fences = ++fman->num_fence_objects; |
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235 | |||
236 | out_unlock: |
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237 | spin_unlock_irqrestore(&fman->lock, irq_flags); |
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238 | return ret; |
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239 | |||
240 | } |
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241 | |||
242 | struct vmw_fence_obj *vmw_fence_obj_reference(struct vmw_fence_obj *fence) |
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243 | { |
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244 | if (unlikely(fence == NULL)) |
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245 | return NULL; |
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246 | |||
247 | kref_get(&fence->kref); |
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248 | return fence; |
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249 | } |
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250 | |||
251 | /** |
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252 | * vmw_fence_obj_unreference |
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253 | * |
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254 | * Note that this function may not be entered with disabled irqs since |
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255 | * it may re-enable them in the destroy function. |
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256 | * |
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257 | */ |
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258 | void vmw_fence_obj_unreference(struct vmw_fence_obj **fence_p) |
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259 | { |
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260 | struct vmw_fence_obj *fence = *fence_p; |
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261 | struct vmw_fence_manager *fman; |
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262 | |||
263 | if (unlikely(fence == NULL)) |
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264 | return; |
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265 | |||
266 | fman = fence->fman; |
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267 | *fence_p = NULL; |
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268 | spin_lock_irq(&fman->lock); |
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269 | BUG_ON(atomic_read(&fence->kref.refcount) == 0); |
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270 | kref_put(&fence->kref, vmw_fence_obj_destroy_locked); |
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271 | spin_unlock_irq(&fman->lock); |
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272 | } |
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273 | |||
4569 | Serge | 274 | static void vmw_fences_perform_actions(struct vmw_fence_manager *fman, |
4075 | Serge | 275 | struct list_head *list) |
276 | { |
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277 | struct vmw_fence_action *action, *next_action; |
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278 | |||
279 | list_for_each_entry_safe(action, next_action, list, head) { |
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280 | list_del_init(&action->head); |
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281 | fman->pending_actions[action->type]--; |
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282 | if (action->seq_passed != NULL) |
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283 | action->seq_passed(action); |
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284 | |||
285 | /* |
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286 | * Add the cleanup action to the cleanup list so that |
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287 | * it will be performed by a worker task. |
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288 | */ |
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289 | |||
290 | list_add_tail(&action->head, &fman->cleanup_list); |
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291 | } |
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292 | } |
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293 | |||
294 | /** |
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295 | * vmw_fence_goal_new_locked - Figure out a new device fence goal |
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296 | * seqno if needed. |
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297 | * |
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298 | * @fman: Pointer to a fence manager. |
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299 | * @passed_seqno: The seqno the device currently signals as passed. |
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300 | * |
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301 | * This function should be called with the fence manager lock held. |
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302 | * It is typically called when we have a new passed_seqno, and |
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303 | * we might need to update the fence goal. It checks to see whether |
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304 | * the current fence goal has already passed, and, in that case, |
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305 | * scans through all unsignaled fences to get the next fence object with an |
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306 | * action attached, and sets the seqno of that fence as a new fence goal. |
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307 | * |
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308 | * returns true if the device goal seqno was updated. False otherwise. |
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309 | */ |
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310 | static bool vmw_fence_goal_new_locked(struct vmw_fence_manager *fman, |
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311 | u32 passed_seqno) |
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312 | { |
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313 | u32 goal_seqno; |
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314 | __le32 __iomem *fifo_mem; |
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315 | struct vmw_fence_obj *fence; |
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316 | |||
317 | if (likely(!fman->seqno_valid)) |
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318 | return false; |
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319 | |||
320 | fifo_mem = fman->dev_priv->mmio_virt; |
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321 | goal_seqno = ioread32(fifo_mem + SVGA_FIFO_FENCE_GOAL); |
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322 | if (likely(passed_seqno - goal_seqno >= VMW_FENCE_WRAP)) |
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323 | return false; |
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324 | |||
325 | fman->seqno_valid = false; |
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326 | list_for_each_entry(fence, &fman->fence_list, head) { |
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327 | if (!list_empty(&fence->seq_passed_actions)) { |
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328 | fman->seqno_valid = true; |
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329 | iowrite32(fence->seqno, |
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330 | fifo_mem + SVGA_FIFO_FENCE_GOAL); |
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331 | break; |
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332 | } |
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333 | } |
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334 | |||
335 | return true; |
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336 | } |
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337 | |||
338 | |||
339 | /** |
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340 | * vmw_fence_goal_check_locked - Replace the device fence goal seqno if |
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341 | * needed. |
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342 | * |
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343 | * @fence: Pointer to a struct vmw_fence_obj the seqno of which should be |
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344 | * considered as a device fence goal. |
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345 | * |
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346 | * This function should be called with the fence manager lock held. |
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347 | * It is typically called when an action has been attached to a fence to |
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348 | * check whether the seqno of that fence should be used for a fence |
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349 | * goal interrupt. This is typically needed if the current fence goal is |
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350 | * invalid, or has a higher seqno than that of the current fence object. |
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351 | * |
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352 | * returns true if the device goal seqno was updated. False otherwise. |
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353 | */ |
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354 | static bool vmw_fence_goal_check_locked(struct vmw_fence_obj *fence) |
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355 | { |
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356 | u32 goal_seqno; |
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357 | __le32 __iomem *fifo_mem; |
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358 | |||
359 | if (fence->signaled & DRM_VMW_FENCE_FLAG_EXEC) |
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360 | return false; |
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361 | |||
362 | fifo_mem = fence->fman->dev_priv->mmio_virt; |
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363 | goal_seqno = ioread32(fifo_mem + SVGA_FIFO_FENCE_GOAL); |
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364 | if (likely(fence->fman->seqno_valid && |
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365 | goal_seqno - fence->seqno < VMW_FENCE_WRAP)) |
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366 | return false; |
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367 | |||
368 | iowrite32(fence->seqno, fifo_mem + SVGA_FIFO_FENCE_GOAL); |
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369 | fence->fman->seqno_valid = true; |
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370 | |||
371 | return true; |
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372 | } |
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373 | |||
374 | void vmw_fences_update(struct vmw_fence_manager *fman) |
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375 | { |
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376 | unsigned long flags; |
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377 | struct vmw_fence_obj *fence, *next_fence; |
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378 | struct list_head action_list; |
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379 | bool needs_rerun; |
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380 | uint32_t seqno, new_seqno; |
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381 | __le32 __iomem *fifo_mem = fman->dev_priv->mmio_virt; |
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382 | |||
383 | seqno = ioread32(fifo_mem + SVGA_FIFO_FENCE); |
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384 | rerun: |
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385 | spin_lock_irqsave(&fman->lock, flags); |
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386 | list_for_each_entry_safe(fence, next_fence, &fman->fence_list, head) { |
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387 | if (seqno - fence->seqno < VMW_FENCE_WRAP) { |
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388 | list_del_init(&fence->head); |
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389 | fence->signaled |= DRM_VMW_FENCE_FLAG_EXEC; |
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390 | INIT_LIST_HEAD(&action_list); |
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391 | list_splice_init(&fence->seq_passed_actions, |
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392 | &action_list); |
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393 | vmw_fences_perform_actions(fman, &action_list); |
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394 | wake_up_all(&fence->queue); |
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395 | } else |
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396 | break; |
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397 | } |
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398 | |||
399 | needs_rerun = vmw_fence_goal_new_locked(fman, seqno); |
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400 | |||
401 | // if (!list_empty(&fman->cleanup_list)) |
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402 | // (void) schedule_work(&fman->work); |
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403 | spin_unlock_irqrestore(&fman->lock, flags); |
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404 | |||
405 | /* |
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406 | * Rerun if the fence goal seqno was updated, and the |
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407 | * hardware might have raced with that update, so that |
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408 | * we missed a fence_goal irq. |
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409 | */ |
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410 | |||
411 | if (unlikely(needs_rerun)) { |
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412 | new_seqno = ioread32(fifo_mem + SVGA_FIFO_FENCE); |
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413 | if (new_seqno != seqno) { |
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414 | seqno = new_seqno; |
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415 | goto rerun; |
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416 | } |
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417 | } |
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418 | } |
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419 | |||
420 | bool vmw_fence_obj_signaled(struct vmw_fence_obj *fence, |
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421 | uint32_t flags) |
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422 | { |
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423 | struct vmw_fence_manager *fman = fence->fman; |
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424 | unsigned long irq_flags; |
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425 | uint32_t signaled; |
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426 | |||
427 | spin_lock_irqsave(&fman->lock, irq_flags); |
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428 | signaled = fence->signaled; |
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429 | spin_unlock_irqrestore(&fman->lock, irq_flags); |
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430 | |||
431 | flags &= fence->signal_mask; |
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432 | if ((signaled & flags) == flags) |
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433 | return 1; |
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434 | |||
435 | if ((signaled & DRM_VMW_FENCE_FLAG_EXEC) == 0) |
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436 | vmw_fences_update(fman); |
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437 | |||
438 | spin_lock_irqsave(&fman->lock, irq_flags); |
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439 | signaled = fence->signaled; |
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440 | spin_unlock_irqrestore(&fman->lock, irq_flags); |
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441 | |||
442 | return ((signaled & flags) == flags); |
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443 | } |
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444 | |||
445 | int vmw_fence_obj_wait(struct vmw_fence_obj *fence, |
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446 | uint32_t flags, bool lazy, |
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447 | bool interruptible, unsigned long timeout) |
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448 | { |
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449 | struct vmw_private *dev_priv = fence->fman->dev_priv; |
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450 | long ret; |
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451 | |||
452 | if (likely(vmw_fence_obj_signaled(fence, flags))) |
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453 | return 0; |
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454 | |||
455 | vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); |
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456 | vmw_seqno_waiter_add(dev_priv); |
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457 | |||
458 | if (interruptible) |
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459 | ret = wait_event_interruptible_timeout |
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460 | (fence->queue, |
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461 | vmw_fence_obj_signaled(fence, flags), |
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462 | timeout); |
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463 | else |
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464 | ret = wait_event_timeout |
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465 | (fence->queue, |
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466 | vmw_fence_obj_signaled(fence, flags), |
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467 | timeout); |
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468 | |||
469 | vmw_seqno_waiter_remove(dev_priv); |
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470 | |||
471 | if (unlikely(ret == 0)) |
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472 | ret = -EBUSY; |
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473 | else if (likely(ret > 0)) |
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474 | ret = 0; |
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475 | |||
476 | return ret; |
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477 | } |
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478 | |||
479 | void vmw_fence_obj_flush(struct vmw_fence_obj *fence) |
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480 | { |
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481 | struct vmw_private *dev_priv = fence->fman->dev_priv; |
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482 | |||
483 | vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); |
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484 | } |
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485 | |||
486 | static void vmw_fence_destroy(struct vmw_fence_obj *fence) |
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487 | { |
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488 | struct vmw_fence_manager *fman = fence->fman; |
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489 | |||
490 | kfree(fence); |
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491 | /* |
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492 | * Free kernel space accounting. |
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493 | */ |
||
494 | ttm_mem_global_free(vmw_mem_glob(fman->dev_priv), |
||
495 | fman->fence_size); |
||
496 | } |
||
497 | |||
498 | int vmw_fence_create(struct vmw_fence_manager *fman, |
||
499 | uint32_t seqno, |
||
500 | uint32_t mask, |
||
501 | struct vmw_fence_obj **p_fence) |
||
502 | { |
||
503 | struct ttm_mem_global *mem_glob = vmw_mem_glob(fman->dev_priv); |
||
504 | struct vmw_fence_obj *fence; |
||
505 | int ret; |
||
506 | |||
507 | ret = ttm_mem_global_alloc(mem_glob, fman->fence_size, |
||
508 | false, false); |
||
509 | if (unlikely(ret != 0)) |
||
510 | return ret; |
||
511 | |||
512 | fence = kzalloc(sizeof(*fence), GFP_KERNEL); |
||
513 | if (unlikely(fence == NULL)) { |
||
514 | ret = -ENOMEM; |
||
515 | goto out_no_object; |
||
516 | } |
||
517 | |||
518 | ret = vmw_fence_obj_init(fman, fence, seqno, mask, |
||
519 | vmw_fence_destroy); |
||
520 | if (unlikely(ret != 0)) |
||
521 | goto out_err_init; |
||
522 | |||
523 | *p_fence = fence; |
||
524 | return 0; |
||
525 | |||
526 | out_err_init: |
||
527 | kfree(fence); |
||
528 | out_no_object: |
||
529 | ttm_mem_global_free(mem_glob, fman->fence_size); |
||
530 | return ret; |
||
531 | } |
||
532 | |||
533 | |||
534 | static void vmw_user_fence_destroy(struct vmw_fence_obj *fence) |
||
535 | { |
||
536 | struct vmw_user_fence *ufence = |
||
537 | container_of(fence, struct vmw_user_fence, fence); |
||
538 | struct vmw_fence_manager *fman = fence->fman; |
||
539 | |||
540 | // ttm_base_object_kfree(ufence, base); |
||
541 | /* |
||
542 | * Free kernel space accounting. |
||
543 | */ |
||
544 | ttm_mem_global_free(vmw_mem_glob(fman->dev_priv), |
||
545 | fman->user_fence_size); |
||
546 | } |
||
547 | |||
548 | static void vmw_user_fence_base_release(struct ttm_base_object **p_base) |
||
549 | { |
||
550 | struct ttm_base_object *base = *p_base; |
||
551 | struct vmw_user_fence *ufence = |
||
552 | container_of(base, struct vmw_user_fence, base); |
||
553 | struct vmw_fence_obj *fence = &ufence->fence; |
||
554 | |||
555 | *p_base = NULL; |
||
556 | vmw_fence_obj_unreference(&fence); |
||
557 | } |
||
558 | |||
559 | int vmw_user_fence_create(struct drm_file *file_priv, |
||
560 | struct vmw_fence_manager *fman, |
||
561 | uint32_t seqno, |
||
562 | uint32_t mask, |
||
563 | struct vmw_fence_obj **p_fence, |
||
564 | uint32_t *p_handle) |
||
565 | { |
||
566 | struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; |
||
567 | struct vmw_user_fence *ufence; |
||
568 | struct vmw_fence_obj *tmp; |
||
569 | struct ttm_mem_global *mem_glob = vmw_mem_glob(fman->dev_priv); |
||
570 | int ret; |
||
571 | |||
572 | /* |
||
573 | * Kernel memory space accounting, since this object may |
||
574 | * be created by a user-space request. |
||
575 | */ |
||
576 | |||
577 | ret = ttm_mem_global_alloc(mem_glob, fman->user_fence_size, |
||
578 | false, false); |
||
579 | if (unlikely(ret != 0)) |
||
580 | return ret; |
||
581 | |||
582 | ufence = kzalloc(sizeof(*ufence), GFP_KERNEL); |
||
583 | if (unlikely(ufence == NULL)) { |
||
584 | ret = -ENOMEM; |
||
585 | goto out_no_object; |
||
586 | } |
||
587 | |||
588 | ret = vmw_fence_obj_init(fman, &ufence->fence, seqno, |
||
589 | mask, vmw_user_fence_destroy); |
||
590 | if (unlikely(ret != 0)) { |
||
591 | kfree(ufence); |
||
592 | goto out_no_object; |
||
593 | } |
||
594 | |||
595 | /* |
||
596 | * The base object holds a reference which is freed in |
||
597 | * vmw_user_fence_base_release. |
||
598 | */ |
||
599 | tmp = vmw_fence_obj_reference(&ufence->fence); |
||
600 | ret = ttm_base_object_init(tfile, &ufence->base, false, |
||
601 | VMW_RES_FENCE, |
||
602 | &vmw_user_fence_base_release, NULL); |
||
603 | |||
604 | |||
605 | if (unlikely(ret != 0)) { |
||
606 | /* |
||
607 | * Free the base object's reference |
||
608 | */ |
||
609 | vmw_fence_obj_unreference(&tmp); |
||
610 | goto out_err; |
||
611 | } |
||
612 | |||
613 | *p_fence = &ufence->fence; |
||
614 | *p_handle = ufence->base.hash.key; |
||
615 | |||
616 | return 0; |
||
617 | out_err: |
||
618 | tmp = &ufence->fence; |
||
619 | vmw_fence_obj_unreference(&tmp); |
||
620 | out_no_object: |
||
621 | ttm_mem_global_free(mem_glob, fman->user_fence_size); |
||
622 | return ret; |
||
623 | } |
||
624 | |||
625 | |||
626 | /** |
||
627 | * vmw_fence_fifo_down - signal all unsignaled fence objects. |
||
628 | */ |
||
629 | |||
630 | void vmw_fence_fifo_down(struct vmw_fence_manager *fman) |
||
631 | { |
||
632 | unsigned long irq_flags; |
||
633 | struct list_head action_list; |
||
634 | int ret; |
||
635 | |||
636 | /* |
||
637 | * The list may be altered while we traverse it, so always |
||
638 | * restart when we've released the fman->lock. |
||
639 | */ |
||
640 | |||
641 | spin_lock_irqsave(&fman->lock, irq_flags); |
||
642 | fman->fifo_down = true; |
||
643 | while (!list_empty(&fman->fence_list)) { |
||
644 | struct vmw_fence_obj *fence = |
||
645 | list_entry(fman->fence_list.prev, struct vmw_fence_obj, |
||
646 | head); |
||
647 | kref_get(&fence->kref); |
||
648 | spin_unlock_irq(&fman->lock); |
||
649 | |||
650 | ret = vmw_fence_obj_wait(fence, fence->signal_mask, |
||
651 | false, false, |
||
652 | VMW_FENCE_WAIT_TIMEOUT); |
||
653 | |||
654 | if (unlikely(ret != 0)) { |
||
655 | list_del_init(&fence->head); |
||
656 | fence->signaled |= DRM_VMW_FENCE_FLAG_EXEC; |
||
657 | INIT_LIST_HEAD(&action_list); |
||
658 | list_splice_init(&fence->seq_passed_actions, |
||
659 | &action_list); |
||
660 | vmw_fences_perform_actions(fman, &action_list); |
||
661 | wake_up_all(&fence->queue); |
||
662 | } |
||
663 | |||
664 | spin_lock_irq(&fman->lock); |
||
665 | |||
666 | BUG_ON(!list_empty(&fence->head)); |
||
667 | kref_put(&fence->kref, vmw_fence_obj_destroy_locked); |
||
668 | } |
||
669 | spin_unlock_irqrestore(&fman->lock, irq_flags); |
||
670 | } |
||
671 | |||
672 | void vmw_fence_fifo_up(struct vmw_fence_manager *fman) |
||
673 | { |
||
674 | unsigned long irq_flags; |
||
675 | |||
676 | spin_lock_irqsave(&fman->lock, irq_flags); |
||
677 | fman->fifo_down = false; |
||
678 | spin_unlock_irqrestore(&fman->lock, irq_flags); |
||
679 | } |
||
680 | |||
681 | |||
682 | int vmw_fence_obj_wait_ioctl(struct drm_device *dev, void *data, |
||
683 | struct drm_file *file_priv) |
||
684 | { |
||
685 | struct drm_vmw_fence_wait_arg *arg = |
||
686 | (struct drm_vmw_fence_wait_arg *)data; |
||
687 | unsigned long timeout; |
||
688 | struct ttm_base_object *base; |
||
689 | struct vmw_fence_obj *fence; |
||
690 | struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; |
||
691 | int ret; |
||
692 | uint64_t wait_timeout = ((uint64_t)arg->timeout_us * HZ); |
||
693 | |||
694 | /* |
||
695 | * 64-bit division not present on 32-bit systems, so do an |
||
696 | * approximation. (Divide by 1000000). |
||
697 | */ |
||
698 | |||
699 | wait_timeout = (wait_timeout >> 20) + (wait_timeout >> 24) - |
||
700 | (wait_timeout >> 26); |
||
701 | |||
702 | if (!arg->cookie_valid) { |
||
703 | arg->cookie_valid = 1; |
||
704 | arg->kernel_cookie = GetTimerTicks() + wait_timeout; |
||
705 | } |
||
706 | |||
707 | base = ttm_base_object_lookup(tfile, arg->handle); |
||
708 | if (unlikely(base == NULL)) { |
||
709 | printk(KERN_ERR "Wait invalid fence object handle " |
||
710 | "0x%08lx.\n", |
||
711 | (unsigned long)arg->handle); |
||
712 | return -EINVAL; |
||
713 | } |
||
714 | |||
715 | fence = &(container_of(base, struct vmw_user_fence, base)->fence); |
||
716 | |||
717 | timeout = GetTimerTicks(); |
||
718 | if (time_after_eq(timeout, (unsigned long)arg->kernel_cookie)) { |
||
719 | ret = ((vmw_fence_obj_signaled(fence, arg->flags)) ? |
||
720 | |||
721 | goto out; |
||
722 | } |
||
723 | |||
724 | timeout = (unsigned long)arg->kernel_cookie - timeout; |
||
725 | |||
726 | ret = vmw_fence_obj_wait(fence, arg->flags, arg->lazy, true, timeout); |
||
727 | |||
728 | out: |
||
729 | ttm_base_object_unref(&base); |
||
730 | |||
731 | /* |
||
732 | * Optionally unref the fence object. |
||
733 | */ |
||
734 | |||
735 | if (ret == 0 && (arg->wait_options & DRM_VMW_WAIT_OPTION_UNREF)) |
||
736 | return ttm_ref_object_base_unref(tfile, arg->handle, |
||
737 | TTM_REF_USAGE); |
||
738 | return ret; |
||
739 | } |
||
740 | |||
741 | int vmw_fence_obj_signaled_ioctl(struct drm_device *dev, void *data, |
||
742 | struct drm_file *file_priv) |
||
743 | { |
||
744 | struct drm_vmw_fence_signaled_arg *arg = |
||
745 | (struct drm_vmw_fence_signaled_arg *) data; |
||
746 | struct ttm_base_object *base; |
||
747 | struct vmw_fence_obj *fence; |
||
748 | struct vmw_fence_manager *fman; |
||
749 | struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; |
||
750 | struct vmw_private *dev_priv = vmw_priv(dev); |
||
751 | |||
752 | base = ttm_base_object_lookup(tfile, arg->handle); |
||
753 | if (unlikely(base == NULL)) { |
||
754 | printk(KERN_ERR "Fence signaled invalid fence object handle " |
||
755 | "0x%08lx.\n", |
||
756 | (unsigned long)arg->handle); |
||
757 | return -EINVAL; |
||
758 | } |
||
759 | |||
760 | fence = &(container_of(base, struct vmw_user_fence, base)->fence); |
||
761 | fman = fence->fman; |
||
762 | |||
763 | arg->signaled = vmw_fence_obj_signaled(fence, arg->flags); |
||
764 | spin_lock_irq(&fman->lock); |
||
765 | |||
766 | arg->signaled_flags = fence->signaled; |
||
767 | arg->passed_seqno = dev_priv->last_read_seqno; |
||
768 | spin_unlock_irq(&fman->lock); |
||
769 | |||
770 | ttm_base_object_unref(&base); |
||
771 | |||
772 | return 0; |
||
773 | } |
||
774 | |||
775 | |||
776 | int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data, |
||
777 | struct drm_file *file_priv) |
||
778 | { |
||
779 | struct drm_vmw_fence_arg *arg = |
||
780 | (struct drm_vmw_fence_arg *) data; |
||
781 | |||
782 | return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile, |
||
783 | arg->handle, |
||
784 | TTM_REF_USAGE); |
||
785 | } |
||
786 | |||
787 | /** |
||
788 | * vmw_event_fence_fpriv_gone - Remove references to struct drm_file objects |
||
789 | * |
||
790 | * @fman: Pointer to a struct vmw_fence_manager |
||
791 | * @event_list: Pointer to linked list of struct vmw_event_fence_action objects |
||
792 | * with pointers to a struct drm_file object about to be closed. |
||
793 | * |
||
794 | * This function removes all pending fence events with references to a |
||
795 | * specific struct drm_file object about to be closed. The caller is required |
||
796 | * to pass a list of all struct vmw_event_fence_action objects with such |
||
797 | * events attached. This function is typically called before the |
||
798 | * struct drm_file object's event management is taken down. |
||
799 | */ |
||
800 | void vmw_event_fence_fpriv_gone(struct vmw_fence_manager *fman, |
||
801 | struct list_head *event_list) |
||
802 | { |
||
803 | struct vmw_event_fence_action *eaction; |
||
804 | struct drm_pending_event *event; |
||
805 | unsigned long irq_flags; |
||
806 | |||
807 | while (1) { |
||
808 | spin_lock_irqsave(&fman->lock, irq_flags); |
||
809 | if (list_empty(event_list)) |
||
810 | goto out_unlock; |
||
811 | eaction = list_first_entry(event_list, |
||
812 | struct vmw_event_fence_action, |
||
813 | fpriv_head); |
||
814 | list_del_init(&eaction->fpriv_head); |
||
815 | event = eaction->event; |
||
816 | eaction->event = NULL; |
||
817 | spin_unlock_irqrestore(&fman->lock, irq_flags); |
||
818 | event->destroy(event); |
||
819 | } |
||
820 | out_unlock: |
||
821 | spin_unlock_irqrestore(&fman->lock, irq_flags); |
||
822 | } |
||
823 | |||
824 | |||
825 | /** |
||
826 | * vmw_event_fence_action_seq_passed |
||
827 | * |
||
828 | * @action: The struct vmw_fence_action embedded in a struct |
||
829 | * vmw_event_fence_action. |
||
830 | * |
||
831 | * This function is called when the seqno of the fence where @action is |
||
832 | * attached has passed. It queues the event on the submitter's event list. |
||
833 | * This function is always called from atomic context, and may be called |
||
834 | * from irq context. |
||
835 | */ |
||
836 | static void vmw_event_fence_action_seq_passed(struct vmw_fence_action *action) |
||
837 | { |
||
838 | struct vmw_event_fence_action *eaction = |
||
839 | container_of(action, struct vmw_event_fence_action, action); |
||
840 | struct drm_device *dev = eaction->dev; |
||
841 | struct drm_pending_event *event = eaction->event; |
||
842 | struct drm_file *file_priv; |
||
843 | unsigned long irq_flags; |
||
844 | |||
845 | if (unlikely(event == NULL)) |
||
846 | return; |
||
847 | |||
848 | file_priv = event->file_priv; |
||
849 | spin_lock_irqsave(&dev->event_lock, irq_flags); |
||
850 | /* |
||
851 | if (likely(eaction->tv_sec != NULL)) { |
||
852 | struct timeval tv; |
||
853 | |||
854 | do_gettimeofday(&tv); |
||
855 | *eaction->tv_sec = tv.tv_sec; |
||
856 | *eaction->tv_usec = tv.tv_usec; |
||
857 | } |
||
858 | */ |
||
859 | list_del_init(&eaction->fpriv_head); |
||
860 | list_add_tail(&eaction->event->link, &file_priv->event_list); |
||
861 | eaction->event = NULL; |
||
862 | wake_up_all(&file_priv->event_wait); |
||
863 | spin_unlock_irqrestore(&dev->event_lock, irq_flags); |
||
864 | } |
||
865 | |||
866 | /** |
||
867 | * vmw_event_fence_action_cleanup |
||
868 | * |
||
869 | * @action: The struct vmw_fence_action embedded in a struct |
||
870 | * vmw_event_fence_action. |
||
871 | * |
||
872 | * This function is the struct vmw_fence_action destructor. It's typically |
||
873 | * called from a workqueue. |
||
874 | */ |
||
875 | static void vmw_event_fence_action_cleanup(struct vmw_fence_action *action) |
||
876 | { |
||
877 | struct vmw_event_fence_action *eaction = |
||
878 | container_of(action, struct vmw_event_fence_action, action); |
||
879 | struct vmw_fence_manager *fman = eaction->fence->fman; |
||
880 | unsigned long irq_flags; |
||
881 | |||
882 | spin_lock_irqsave(&fman->lock, irq_flags); |
||
883 | list_del(&eaction->fpriv_head); |
||
884 | spin_unlock_irqrestore(&fman->lock, irq_flags); |
||
885 | |||
886 | vmw_fence_obj_unreference(&eaction->fence); |
||
887 | kfree(eaction); |
||
888 | } |
||
889 | |||
890 | |||
891 | /** |
||
892 | * vmw_fence_obj_add_action - Add an action to a fence object. |
||
893 | * |
||
894 | * @fence - The fence object. |
||
895 | * @action - The action to add. |
||
896 | * |
||
897 | * Note that the action callbacks may be executed before this function |
||
898 | * returns. |
||
899 | */ |
||
4569 | Serge | 900 | static void vmw_fence_obj_add_action(struct vmw_fence_obj *fence, |
4075 | Serge | 901 | struct vmw_fence_action *action) |
902 | { |
||
903 | struct vmw_fence_manager *fman = fence->fman; |
||
904 | unsigned long irq_flags; |
||
905 | bool run_update = false; |
||
906 | |||
907 | mutex_lock(&fman->goal_irq_mutex); |
||
908 | spin_lock_irqsave(&fman->lock, irq_flags); |
||
909 | |||
910 | fman->pending_actions[action->type]++; |
||
911 | if (fence->signaled & DRM_VMW_FENCE_FLAG_EXEC) { |
||
912 | struct list_head action_list; |
||
913 | |||
914 | INIT_LIST_HEAD(&action_list); |
||
915 | list_add_tail(&action->head, &action_list); |
||
916 | vmw_fences_perform_actions(fman, &action_list); |
||
917 | } else { |
||
918 | list_add_tail(&action->head, &fence->seq_passed_actions); |
||
919 | |||
920 | /* |
||
921 | * This function may set fman::seqno_valid, so it must |
||
922 | * be run with the goal_irq_mutex held. |
||
923 | */ |
||
924 | run_update = vmw_fence_goal_check_locked(fence); |
||
925 | } |
||
926 | |||
927 | spin_unlock_irqrestore(&fman->lock, irq_flags); |
||
928 | |||
929 | if (run_update) { |
||
930 | if (!fman->goal_irq_on) { |
||
931 | fman->goal_irq_on = true; |
||
932 | vmw_goal_waiter_add(fman->dev_priv); |
||
933 | } |
||
934 | vmw_fences_update(fman); |
||
935 | } |
||
936 | mutex_unlock(&fman->goal_irq_mutex); |
||
937 | |||
938 | } |
||
939 | |||
940 | /** |
||
941 | * vmw_event_fence_action_create - Post an event for sending when a fence |
||
942 | * object seqno has passed. |
||
943 | * |
||
944 | * @file_priv: The file connection on which the event should be posted. |
||
945 | * @fence: The fence object on which to post the event. |
||
946 | * @event: Event to be posted. This event should've been alloced |
||
947 | * using k[mz]alloc, and should've been completely initialized. |
||
948 | * @interruptible: Interruptible waits if possible. |
||
949 | * |
||
950 | * As a side effect, the object pointed to by @event may have been |
||
951 | * freed when this function returns. If this function returns with |
||
952 | * an error code, the caller needs to free that object. |
||
953 | */ |
||
954 | |||
955 | int vmw_event_fence_action_queue(struct drm_file *file_priv, |
||
956 | struct vmw_fence_obj *fence, |
||
957 | struct drm_pending_event *event, |
||
958 | uint32_t *tv_sec, |
||
959 | uint32_t *tv_usec, |
||
960 | bool interruptible) |
||
961 | { |
||
962 | struct vmw_event_fence_action *eaction; |
||
963 | struct vmw_fence_manager *fman = fence->fman; |
||
964 | struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); |
||
965 | unsigned long irq_flags; |
||
966 | |||
967 | eaction = kzalloc(sizeof(*eaction), GFP_KERNEL); |
||
968 | if (unlikely(eaction == NULL)) |
||
969 | return -ENOMEM; |
||
970 | |||
971 | eaction->event = event; |
||
972 | |||
973 | eaction->action.seq_passed = vmw_event_fence_action_seq_passed; |
||
974 | eaction->action.cleanup = vmw_event_fence_action_cleanup; |
||
975 | eaction->action.type = VMW_ACTION_EVENT; |
||
976 | |||
977 | eaction->fence = vmw_fence_obj_reference(fence); |
||
978 | eaction->dev = fman->dev_priv->dev; |
||
979 | eaction->tv_sec = tv_sec; |
||
980 | eaction->tv_usec = tv_usec; |
||
981 | |||
982 | spin_lock_irqsave(&fman->lock, irq_flags); |
||
983 | list_add_tail(&eaction->fpriv_head, &vmw_fp->fence_events); |
||
984 | spin_unlock_irqrestore(&fman->lock, irq_flags); |
||
985 | |||
986 | vmw_fence_obj_add_action(fence, &eaction->action); |
||
987 | |||
988 | return 0; |
||
989 | } |
||
990 | |||
991 | struct vmw_event_fence_pending { |
||
992 | struct drm_pending_event base; |
||
993 | struct drm_vmw_event_fence event; |
||
994 | }; |
||
995 | |||
4569 | Serge | 996 | static int vmw_event_fence_action_create(struct drm_file *file_priv, |
4075 | Serge | 997 | struct vmw_fence_obj *fence, |
998 | uint32_t flags, |
||
999 | uint64_t user_data, |
||
1000 | bool interruptible) |
||
1001 | { |
||
1002 | struct vmw_event_fence_pending *event; |
||
1003 | struct drm_device *dev = fence->fman->dev_priv->dev; |
||
1004 | unsigned long irq_flags; |
||
1005 | int ret; |
||
1006 | |||
1007 | spin_lock_irqsave(&dev->event_lock, irq_flags); |
||
1008 | |||
1009 | ret = (file_priv->event_space < sizeof(event->event)) ? -EBUSY : 0; |
||
1010 | if (likely(ret == 0)) |
||
1011 | file_priv->event_space -= sizeof(event->event); |
||
1012 | |||
1013 | spin_unlock_irqrestore(&dev->event_lock, irq_flags); |
||
1014 | |||
1015 | if (unlikely(ret != 0)) { |
||
1016 | DRM_ERROR("Failed to allocate event space for this file.\n"); |
||
1017 | goto out_no_space; |
||
1018 | } |
||
1019 | |||
1020 | |||
1021 | event = kzalloc(sizeof(*event), GFP_KERNEL); |
||
1022 | if (unlikely(event == NULL)) { |
||
1023 | DRM_ERROR("Failed to allocate an event.\n"); |
||
1024 | ret = -ENOMEM; |
||
1025 | goto out_no_event; |
||
1026 | } |
||
1027 | |||
1028 | event->event.base.type = DRM_VMW_EVENT_FENCE_SIGNALED; |
||
1029 | event->event.base.length = sizeof(*event); |
||
1030 | event->event.user_data = user_data; |
||
1031 | |||
1032 | event->base.event = &event->event.base; |
||
1033 | event->base.file_priv = file_priv; |
||
1034 | event->base.destroy = (void (*) (struct drm_pending_event *)) kfree; |
||
1035 | |||
1036 | |||
1037 | if (flags & DRM_VMW_FE_FLAG_REQ_TIME) |
||
1038 | ret = vmw_event_fence_action_queue(file_priv, fence, |
||
1039 | &event->base, |
||
1040 | &event->event.tv_sec, |
||
1041 | &event->event.tv_usec, |
||
1042 | interruptible); |
||
1043 | else |
||
1044 | ret = vmw_event_fence_action_queue(file_priv, fence, |
||
1045 | &event->base, |
||
1046 | NULL, |
||
1047 | NULL, |
||
1048 | interruptible); |
||
1049 | if (ret != 0) |
||
1050 | goto out_no_queue; |
||
1051 | |||
1052 | out_no_queue: |
||
1053 | event->base.destroy(&event->base); |
||
1054 | out_no_event: |
||
1055 | spin_lock_irqsave(&dev->event_lock, irq_flags); |
||
1056 | file_priv->event_space += sizeof(*event); |
||
1057 | spin_unlock_irqrestore(&dev->event_lock, irq_flags); |
||
1058 | out_no_space: |
||
1059 | return ret; |
||
1060 | } |
||
1061 | |||
1062 | #if 0 |
||
1063 | int vmw_fence_event_ioctl(struct drm_device *dev, void *data, |
||
1064 | struct drm_file *file_priv) |
||
1065 | { |
||
1066 | struct vmw_private *dev_priv = vmw_priv(dev); |
||
1067 | struct drm_vmw_fence_event_arg *arg = |
||
1068 | (struct drm_vmw_fence_event_arg *) data; |
||
1069 | struct vmw_fence_obj *fence = NULL; |
||
1070 | struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); |
||
1071 | struct drm_vmw_fence_rep __user *user_fence_rep = |
||
1072 | (struct drm_vmw_fence_rep __user *)(unsigned long) |
||
1073 | arg->fence_rep; |
||
1074 | uint32_t handle; |
||
1075 | int ret; |
||
1076 | |||
1077 | /* |
||
1078 | * Look up an existing fence object, |
||
1079 | * and if user-space wants a new reference, |
||
1080 | * add one. |
||
1081 | */ |
||
1082 | if (arg->handle) { |
||
1083 | struct ttm_base_object *base = |
||
4569 | Serge | 1084 | ttm_base_object_lookup_for_ref(dev_priv->tdev, |
1085 | arg->handle); |
||
4075 | Serge | 1086 | |
1087 | if (unlikely(base == NULL)) { |
||
1088 | DRM_ERROR("Fence event invalid fence object handle " |
||
1089 | "0x%08lx.\n", |
||
1090 | (unsigned long)arg->handle); |
||
1091 | return -EINVAL; |
||
1092 | } |
||
1093 | fence = &(container_of(base, struct vmw_user_fence, |
||
1094 | base)->fence); |
||
1095 | (void) vmw_fence_obj_reference(fence); |
||
1096 | |||
1097 | if (user_fence_rep != NULL) { |
||
1098 | bool existed; |
||
1099 | |||
1100 | ret = ttm_ref_object_add(vmw_fp->tfile, base, |
||
1101 | TTM_REF_USAGE, &existed); |
||
1102 | if (unlikely(ret != 0)) { |
||
1103 | DRM_ERROR("Failed to reference a fence " |
||
1104 | "object.\n"); |
||
1105 | goto out_no_ref_obj; |
||
1106 | } |
||
1107 | handle = base->hash.key; |
||
1108 | } |
||
1109 | ttm_base_object_unref(&base); |
||
1110 | } |
||
1111 | |||
1112 | /* |
||
1113 | * Create a new fence object. |
||
1114 | */ |
||
1115 | if (!fence) { |
||
1116 | ret = vmw_execbuf_fence_commands(file_priv, dev_priv, |
||
1117 | &fence, |
||
1118 | (user_fence_rep) ? |
||
1119 | &handle : NULL); |
||
1120 | if (unlikely(ret != 0)) { |
||
1121 | DRM_ERROR("Fence event failed to create fence.\n"); |
||
1122 | return ret; |
||
1123 | } |
||
1124 | } |
||
1125 | |||
1126 | BUG_ON(fence == NULL); |
||
1127 | |||
1128 | if (arg->flags & DRM_VMW_FE_FLAG_REQ_TIME) |
||
1129 | ret = vmw_event_fence_action_create(file_priv, fence, |
||
1130 | arg->flags, |
||
1131 | arg->user_data, |
||
1132 | true); |
||
1133 | else |
||
1134 | ret = vmw_event_fence_action_create(file_priv, fence, |
||
1135 | arg->flags, |
||
1136 | arg->user_data, |
||
1137 | true); |
||
1138 | |||
1139 | if (unlikely(ret != 0)) { |
||
1140 | if (ret != -ERESTARTSYS) |
||
1141 | DRM_ERROR("Failed to attach event to fence.\n"); |
||
1142 | goto out_no_create; |
||
1143 | } |
||
1144 | |||
1145 | vmw_execbuf_copy_fence_user(dev_priv, vmw_fp, 0, user_fence_rep, fence, |
||
1146 | handle); |
||
1147 | vmw_fence_obj_unreference(&fence); |
||
1148 | return 0; |
||
1149 | out_no_create: |
||
1150 | if (user_fence_rep != NULL) |
||
1151 | ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile, |
||
1152 | handle, TTM_REF_USAGE); |
||
1153 | out_no_ref_obj: |
||
1154 | vmw_fence_obj_unreference(&fence); |
||
1155 | return ret; |
||
1156 | } |
||
1157 | |||
1158 | #endif>>>><> |