2  * SPDX-License-Identifier: MIT
28 	GEM_TRACE("%s\n", dev_name(i915->drm.dev));  in i915_gem_suspend()
30 	intel_wakeref_auto(&i915->runtime_pm.userfault_wakeref, 0);  in i915_gem_suspend()
31 	flush_workqueue(i915->wq);  in i915_gem_suspend()
37 	 * leaves the i915->kernel_context still active when  in i915_gem_suspend()
38 	 * we actually suspend, and its image in memory may not match the GPU  in i915_gem_suspend()
51 	int ret = 0, id;  in lmem_restore()  local
53 	for_each_memory_region(mr, i915, id) {  in lmem_restore()
54 		if (mr->type == INTEL_MEMORY_LOCAL) {  in lmem_restore()
67 	int ret = 0, id;  in lmem_suspend()  local
69 	for_each_memory_region(mr, i915, id) {  in lmem_suspend()
70 		if (mr->type == INTEL_MEMORY_LOCAL) {  in lmem_suspend()
83 	int id;  in lmem_recover()  local
85 	for_each_memory_region(mr, i915, id)  in lmem_recover()
86 		if (mr->type == INTEL_MEMORY_LOCAL)  in lmem_recover()
107 	 * page-tables for the migrate context.  in i915_gem_backup_suspend()
134 		&i915->mm.shrink_list,  in i915_gem_suspend_late()
135 		&i915->mm.purge_list,  in i915_gem_suspend_late()
146 	 * so we need to reset the GPU back to legacy mode. And the only  in i915_gem_suspend_late()
147 	 * known way to disable logical contexts is through a GPU reset.  in i915_gem_suspend_late()
150 	 * always reset the GPU upon unload and suspend. Afterwards we then  in i915_gem_suspend_late()
154 	 * Note that is of the upmost importance that the GPU is idle and  in i915_gem_suspend_late()
158 	 * However, since we are uncertain that resetting the GPU on older  in i915_gem_suspend_late()
159 	 * machines is a good idea, we don't - just in case it leaves the  in i915_gem_suspend_late()
166 	spin_lock_irqsave(&i915->mm.obj_lock, flags);  in i915_gem_suspend_late()
169 			if (!(obj->cache_coherent & I915_BO_CACHE_COHERENT_FOR_READ))  in i915_gem_suspend_late()
170 				flush |= (obj->read_domains & I915_GEM_DOMAIN_CPU) == 0;  in i915_gem_suspend_late()
171 			__start_cpu_write(obj); /* presume auto-hibernate */  in i915_gem_suspend_late()
174 	spin_unlock_irqrestore(&i915->mm.obj_lock, flags);  in i915_gem_suspend_late()
209 	with_intel_runtime_pm(&i915->runtime_pm, wakeref)  in i915_gem_freeze_late()
210 		i915_gem_shrink(NULL, i915, -1UL, NULL, ~0);  in i915_gem_freeze_late()
214 	list_for_each_entry(obj, &i915->mm.shrink_list, mm.link)  in i915_gem_freeze_late()
225 	GEM_TRACE("%s\n", dev_name(i915->drm.dev));  in i915_gem_resume()
247 			dev_err(i915->drm.dev,  in i915_gem_resume()
248 				"Failed to re-initialize GPU[%u], declaring it wedged!\n",  in i915_gem_resume()