33  * passed to amdgpu IRQ handler which is responsible for detecting source and
41  * For GPU interrupt sources that may be driven by another driver, IRQ domain
45 #include <linux/irq.h>
130 	spin_lock_irqsave(&adev->irq.lock, irqflags);  in amdgpu_irq_disable_all()
132 		if (!adev->irq.client[i].sources)  in amdgpu_irq_disable_all()
136 			struct amdgpu_irq_src *src = adev->irq.client[i].sources[j];  in amdgpu_irq_disable_all()
150 	spin_unlock_irqrestore(&adev->irq.lock, irqflags);  in amdgpu_irq_disable_all()
154  * amdgpu_irq_handler - IRQ handler
156  * @irq: IRQ number (unused)
159  * IRQ handler for amdgpu driver (all ASICs).
162  * result of handling the IRQ, as defined by &irqreturn_t
164 static irqreturn_t amdgpu_irq_handler(int irq, void *arg)  in amdgpu_irq_handler()  argument
170 	ret = amdgpu_ih_process(adev, &adev->irq.ih);  in amdgpu_irq_handler()
189 						  irq.ih1_work);  in amdgpu_irq_handle_ih1()
191 	amdgpu_ih_process(adev, &adev->irq.ih1);  in amdgpu_irq_handle_ih1()
204 						  irq.ih2_work);  in amdgpu_irq_handle_ih2()
206 	amdgpu_ih_process(adev, &adev->irq.ih2);  in amdgpu_irq_handle_ih2()
219 						  irq.ih_soft_work);  in amdgpu_irq_handle_ih_soft()
221 	amdgpu_ih_process(adev, &adev->irq.ih_soft);  in amdgpu_irq_handle_ih_soft()
273 	unsigned int irq, flags;  in amdgpu_irq_init()  local
276 	spin_lock_init(&adev->irq.lock);  in amdgpu_irq_init()
279 	adev->irq.msi_enabled = false;  in amdgpu_irq_init()
294 		adev->irq.msi_enabled = true;  in amdgpu_irq_init()
298 	INIT_WORK(&adev->irq.ih1_work, amdgpu_irq_handle_ih1);  in amdgpu_irq_init()
299 	INIT_WORK(&adev->irq.ih2_work, amdgpu_irq_handle_ih2);  in amdgpu_irq_init()
300 	INIT_WORK(&adev->irq.ih_soft_work, amdgpu_irq_handle_ih_soft);  in amdgpu_irq_init()
306 	irq = r;  in amdgpu_irq_init()
309 	r = request_irq(irq, amdgpu_irq_handler, IRQF_SHARED, adev_to_drm(adev)->driver->name,  in amdgpu_irq_init()
314 	adev->irq.installed = true;  in amdgpu_irq_init()
315 	adev->irq.irq = irq;  in amdgpu_irq_init()
318 	DRM_DEBUG("amdgpu: irq initialized.\n");  in amdgpu_irq_init()
322 	if (adev->irq.msi_enabled)  in amdgpu_irq_init()
325 	adev->irq.msi_enabled = false;  in amdgpu_irq_init()
331 	if (adev->irq.installed) {  in amdgpu_irq_fini_hw()
332 		free_irq(adev->irq.irq, adev_to_drm(adev));  in amdgpu_irq_fini_hw()
333 		adev->irq.installed = false;  in amdgpu_irq_fini_hw()
334 		if (adev->irq.msi_enabled)  in amdgpu_irq_fini_hw()
338 	amdgpu_ih_ring_fini(adev, &adev->irq.ih_soft);  in amdgpu_irq_fini_hw()
339 	amdgpu_ih_ring_fini(adev, &adev->irq.ih);  in amdgpu_irq_fini_hw()
340 	amdgpu_ih_ring_fini(adev, &adev->irq.ih1);  in amdgpu_irq_fini_hw()
341 	amdgpu_ih_ring_fini(adev, &adev->irq.ih2);  in amdgpu_irq_fini_hw()
358 		if (!adev->irq.client[i].sources)  in amdgpu_irq_fini_sw()
362 			struct amdgpu_irq_src *src = adev->irq.client[i].sources[j];  in amdgpu_irq_fini_sw()
370 		kfree(adev->irq.client[i].sources);  in amdgpu_irq_fini_sw()
371 		adev->irq.client[i].sources = NULL;  in amdgpu_irq_fini_sw()
376  * amdgpu_irq_add_id - register IRQ source
381  * @source: IRQ source pointer
383  * Registers IRQ source on a client.
401 	if (!adev->irq.client[client_id].sources) {  in amdgpu_irq_add_id()
402 		adev->irq.client[client_id].sources =  in amdgpu_irq_add_id()
406 		if (!adev->irq.client[client_id].sources)  in amdgpu_irq_add_id()
410 	if (adev->irq.client[client_id].sources[src_id] != NULL)  in amdgpu_irq_add_id()
424 	adev->irq.client[client_id].sources[src_id] = source;  in amdgpu_irq_add_id()
429  * amdgpu_irq_dispatch - dispatch IRQ to IP blocks
434  * Dispatches IRQ to IP blocks.
458 	trace_amdgpu_iv(ih - &adev->irq.ih, &entry);  in amdgpu_irq_dispatch()
471 		   adev->irq.virq[src_id]) {  in amdgpu_irq_dispatch()
472 		generic_handle_domain_irq(adev->irq.domain, src_id);  in amdgpu_irq_dispatch()
474 	} else if (!adev->irq.client[client_id].sources) {  in amdgpu_irq_dispatch()
478 	} else if ((src = adev->irq.client[client_id].sources[src_id])) {  in amdgpu_irq_dispatch()
512 	amdgpu_ih_ring_write(adev, &adev->irq.ih_soft, entry->iv_entry, num_dw);  in amdgpu_irq_delegate()
513 	schedule_work(&adev->irq.ih_soft_work);  in amdgpu_irq_delegate()
532 	spin_lock_irqsave(&adev->irq.lock, irqflags);  in amdgpu_irq_update()
543 	spin_unlock_irqrestore(&adev->irq.lock, irqflags);  in amdgpu_irq_update()
563 		if (!adev->irq.client[i].sources)  in amdgpu_irq_gpu_reset_resume_helper()
567 			struct amdgpu_irq_src *src = adev->irq.client[i].sources[j];  in amdgpu_irq_gpu_reset_resume_helper()
592 	if (!adev->irq.installed)  in amdgpu_irq_get()
622 	if (!adev->irq.installed)  in amdgpu_irq_put()
656 	if (!adev->irq.installed)  in amdgpu_irq_enabled()
668 /* XXX: Generic IRQ handling */
687  * amdgpu_irqdomain_map - create mapping between virtual and hardware IRQ numbers
689  * @d: amdgpu IRQ domain pointer (unused)
690  * @irq: virtual IRQ number
691  * @hwirq: hardware irq number
694  * IRQ.
700 				unsigned int irq, irq_hw_number_t hwirq)  in amdgpu_irqdomain_map()  argument
705 	irq_set_chip_and_handler(irq,  in amdgpu_irqdomain_map()
710 /* Implementation of methods for amdgpu IRQ domain */
716  * amdgpu_irq_add_domain - create a linear IRQ domain
720  * Creates an IRQ domain for GPU interrupt sources
728 	adev->irq.domain = irq_domain_add_linear(NULL, AMDGPU_MAX_IRQ_SRC_ID,  in amdgpu_irq_add_domain()
730 	if (!adev->irq.domain) {  in amdgpu_irq_add_domain()
731 		DRM_ERROR("GPU irq add domain failed\n");  in amdgpu_irq_add_domain()
739  * amdgpu_irq_remove_domain - remove the IRQ domain
743  * Removes the IRQ domain for GPU interrupt sources
748 	if (adev->irq.domain) {  in amdgpu_irq_remove_domain()
749 		irq_domain_remove(adev->irq.domain);  in amdgpu_irq_remove_domain()
750 		adev->irq.domain = NULL;  in amdgpu_irq_remove_domain()
760  * Creates mapping between a domain IRQ (GPU IH src id) and a Linux IRQ
765  * Linux IRQ
769 	adev->irq.virq[src_id] = irq_create_mapping(adev->irq.domain, src_id);  in amdgpu_irq_create_mapping()
771 	return adev->irq.virq[src_id];  in amdgpu_irq_create_mapping()