24  * struct panthor_gpu - GPU block management data.
27 	/** @irq: GPU irq. */
33 	/** @pending_reqs: Pending GPU requests. */
36 	/** @reqs_acked: GPU request wait queue. */
41  * struct panthor_model - GPU model description
55  * GPU_MODEL() - Define a GPU model. A GPU product can be uniquely identified
58  * @_name: Name for the GPU model.
158 		drm_warn(&ptdev->base, "GPU Fault 0x%08x (%s) at 0x%016llx\n",  in panthor_gpu_irq_handler()
163 		drm_warn(&ptdev->base, "GPU Fault in protected mode\n");  in panthor_gpu_irq_handler()
165 	spin_lock(&ptdev->gpu->reqs_lock);  in panthor_gpu_irq_handler()
166 	if (status & ptdev->gpu->pending_reqs) {  in panthor_gpu_irq_handler()
167 		ptdev->gpu->pending_reqs &= ~status;  in panthor_gpu_irq_handler()
168 		wake_up_all(&ptdev->gpu->reqs_acked);  in panthor_gpu_irq_handler()
170 	spin_unlock(&ptdev->gpu->reqs_lock);  in panthor_gpu_irq_handler()
172 PANTHOR_IRQ_HANDLER(gpu, GPU, panthor_gpu_irq_handler);
175  * panthor_gpu_unplug() - Called when the GPU is unplugged.
184 		panthor_gpu_irq_suspend(&ptdev->gpu->irq);  in panthor_gpu_unplug()
187 	spin_lock_irqsave(&ptdev->gpu->reqs_lock, flags);  in panthor_gpu_unplug()
188 	ptdev->gpu->pending_reqs = 0;  in panthor_gpu_unplug()
189 	wake_up_all(&ptdev->gpu->reqs_acked);  in panthor_gpu_unplug()
190 	spin_unlock_irqrestore(&ptdev->gpu->reqs_lock, flags);  in panthor_gpu_unplug()
194  * panthor_gpu_init() - Initialize the GPU block
201 	struct panthor_gpu *gpu;  in panthor_gpu_init()  local
205 	gpu = drmm_kzalloc(&ptdev->base, sizeof(*gpu), GFP_KERNEL);  in panthor_gpu_init()
206 	if (!gpu)  in panthor_gpu_init()
209 	spin_lock_init(&gpu->reqs_lock);  in panthor_gpu_init()
210 	init_waitqueue_head(&gpu->reqs_acked);  in panthor_gpu_init()
211 	ptdev->gpu = gpu;  in panthor_gpu_init()
220 	irq = platform_get_irq_byname(to_platform_device(ptdev->base.dev), "gpu");  in panthor_gpu_init()
224 	ret = panthor_request_gpu_irq(ptdev, &ptdev->gpu->irq, irq, GPU_INTERRUPTS_MASK);  in panthor_gpu_init()
232  * panthor_gpu_block_power_off() - Power-off a specific block of the GPU
292  * panthor_gpu_block_power_on() - Power-on a specific block of the GPU
396 	spin_lock_irqsave(&ptdev->gpu->reqs_lock, flags);  in panthor_gpu_flush_caches()
398 			 ptdev->gpu->pending_reqs & GPU_IRQ_CLEAN_CACHES_COMPLETED)) {  in panthor_gpu_flush_caches()
399 		ptdev->gpu->pending_reqs |= GPU_IRQ_CLEAN_CACHES_COMPLETED;  in panthor_gpu_flush_caches()
402 	spin_unlock_irqrestore(&ptdev->gpu->reqs_lock, flags);  in panthor_gpu_flush_caches()
404 	if (!wait_event_timeout(ptdev->gpu->reqs_acked,  in panthor_gpu_flush_caches()
405 				!(ptdev->gpu->pending_reqs & GPU_IRQ_CLEAN_CACHES_COMPLETED),  in panthor_gpu_flush_caches()
407 		spin_lock_irqsave(&ptdev->gpu->reqs_lock, flags);  in panthor_gpu_flush_caches()
408 		if ((ptdev->gpu->pending_reqs & GPU_IRQ_CLEAN_CACHES_COMPLETED) != 0 &&  in panthor_gpu_flush_caches()
412 			ptdev->gpu->pending_reqs &= ~GPU_IRQ_CLEAN_CACHES_COMPLETED;  in panthor_gpu_flush_caches()
413 		spin_unlock_irqrestore(&ptdev->gpu->reqs_lock, flags);  in panthor_gpu_flush_caches()
435 	spin_lock_irqsave(&ptdev->gpu->reqs_lock, flags);  in panthor_gpu_soft_reset()
437 			 ptdev->gpu->pending_reqs & GPU_IRQ_RESET_COMPLETED)) {  in panthor_gpu_soft_reset()
438 		ptdev->gpu->pending_reqs |= GPU_IRQ_RESET_COMPLETED;  in panthor_gpu_soft_reset()
442 	spin_unlock_irqrestore(&ptdev->gpu->reqs_lock, flags);  in panthor_gpu_soft_reset()
444 	if (!wait_event_timeout(ptdev->gpu->reqs_acked,  in panthor_gpu_soft_reset()
445 				!(ptdev->gpu->pending_reqs & GPU_IRQ_RESET_COMPLETED),  in panthor_gpu_soft_reset()
447 		spin_lock_irqsave(&ptdev->gpu->reqs_lock, flags);  in panthor_gpu_soft_reset()
448 		if ((ptdev->gpu->pending_reqs & GPU_IRQ_RESET_COMPLETED) != 0 &&  in panthor_gpu_soft_reset()
452 			ptdev->gpu->pending_reqs &= ~GPU_IRQ_RESET_COMPLETED;  in panthor_gpu_soft_reset()
453 		spin_unlock_irqrestore(&ptdev->gpu->reqs_lock, flags);  in panthor_gpu_soft_reset()
465  * panthor_gpu_suspend() - Suspend the GPU block.
468  * Suspend the GPU irq. This should be called last in the suspend procedure,
479 	panthor_gpu_irq_suspend(&ptdev->gpu->irq);  in panthor_gpu_suspend()
483  * panthor_gpu_resume() - Resume the GPU block.
491 	panthor_gpu_irq_resume(&ptdev->gpu->irq, GPU_INTERRUPTS_MASK);  in panthor_gpu_resume()
519  * Return: The GPU timestamp value.
530  * Return: The GPU timestamp offset value.