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>
109  * The work gets scheduled from the IRQ handler if there
115  * from the IRQ handler to a work handler because hotplug handler has to use
116  * mutexes which cannot be locked in an IRQ handler (since &mutex_lock may
151 	spin_lock_irqsave(&adev->irq.lock, irqflags);  in amdgpu_irq_disable_all()
153 		if (!adev->irq.client[i].sources)  in amdgpu_irq_disable_all()
157 			struct amdgpu_irq_src *src = adev->irq.client[i].sources[j];  in amdgpu_irq_disable_all()
172 	spin_unlock_irqrestore(&adev->irq.lock, irqflags);  in amdgpu_irq_disable_all()
176  * amdgpu_irq_handler - IRQ handler
178  * @irq: IRQ number (unused)
181  * IRQ handler for amdgpu driver (all ASICs).
184  * result of handling the IRQ, as defined by &irqreturn_t
186 static irqreturn_t amdgpu_irq_handler(int irq, void *arg)  in amdgpu_irq_handler()  argument
192 	ret = amdgpu_ih_process(adev, &adev->irq.ih);  in amdgpu_irq_handler()
211 						  irq.ih1_work);  in amdgpu_irq_handle_ih1()
213 	amdgpu_ih_process(adev, &adev->irq.ih1);  in amdgpu_irq_handle_ih1()
226 						  irq.ih2_work);  in amdgpu_irq_handle_ih2()
228 	amdgpu_ih_process(adev, &adev->irq.ih2);  in amdgpu_irq_handle_ih2()
241 						  irq.ih_soft_work);  in amdgpu_irq_handle_ih_soft()
243 	amdgpu_ih_process(adev, &adev->irq.ih_soft);  in amdgpu_irq_handle_ih_soft()
296 	unsigned int irq;  in amdgpu_irq_init()  local
298 	spin_lock_init(&adev->irq.lock);  in amdgpu_irq_init()
301 	adev->irq.msi_enabled = false;  in amdgpu_irq_init()
315 			adev->irq.msi_enabled = true;  in amdgpu_irq_init()
335 	INIT_WORK(&adev->irq.ih1_work, amdgpu_irq_handle_ih1);  in amdgpu_irq_init()
336 	INIT_WORK(&adev->irq.ih2_work, amdgpu_irq_handle_ih2);  in amdgpu_irq_init()
337 	INIT_WORK(&adev->irq.ih_soft_work, amdgpu_irq_handle_ih_soft);  in amdgpu_irq_init()
343 	irq = r;  in amdgpu_irq_init()
346 	r = request_irq(irq, amdgpu_irq_handler, IRQF_SHARED, adev_to_drm(adev)->driver->name,  in amdgpu_irq_init()
353 	adev->irq.installed = true;  in amdgpu_irq_init()
354 	adev->irq.irq = irq;  in amdgpu_irq_init()
357 	DRM_DEBUG("amdgpu: irq initialized.\n");  in amdgpu_irq_init()
364 	if (adev->irq.installed) {  in amdgpu_irq_fini_hw()
365 		free_irq(adev->irq.irq, adev_to_drm(adev));  in amdgpu_irq_fini_hw()
366 		adev->irq.installed = false;  in amdgpu_irq_fini_hw()
367 		if (adev->irq.msi_enabled)  in amdgpu_irq_fini_hw()
374 	amdgpu_ih_ring_fini(adev, &adev->irq.ih_soft);  in amdgpu_irq_fini_hw()
375 	amdgpu_ih_ring_fini(adev, &adev->irq.ih);  in amdgpu_irq_fini_hw()
376 	amdgpu_ih_ring_fini(adev, &adev->irq.ih1);  in amdgpu_irq_fini_hw()
377 	amdgpu_ih_ring_fini(adev, &adev->irq.ih2);  in amdgpu_irq_fini_hw()
394 		if (!adev->irq.client[i].sources)  in amdgpu_irq_fini_sw()
398 			struct amdgpu_irq_src *src = adev->irq.client[i].sources[j];  in amdgpu_irq_fini_sw()
406 		kfree(adev->irq.client[i].sources);  in amdgpu_irq_fini_sw()
407 		adev->irq.client[i].sources = NULL;  in amdgpu_irq_fini_sw()
412  * amdgpu_irq_add_id - register IRQ source
417  * @source: IRQ source pointer
419  * Registers IRQ source on a client.
437 	if (!adev->irq.client[client_id].sources) {  in amdgpu_irq_add_id()
438 		adev->irq.client[client_id].sources =  in amdgpu_irq_add_id()
442 		if (!adev->irq.client[client_id].sources)  in amdgpu_irq_add_id()
446 	if (adev->irq.client[client_id].sources[src_id] != NULL)  in amdgpu_irq_add_id()
460 	adev->irq.client[client_id].sources[src_id] = source;  in amdgpu_irq_add_id()
465  * amdgpu_irq_dispatch - dispatch IRQ to IP blocks
470  * Dispatches IRQ to IP blocks.
486 	trace_amdgpu_iv(ih - &adev->irq.ih, &entry);  in amdgpu_irq_dispatch()
498 		   adev->irq.virq[src_id]) {  in amdgpu_irq_dispatch()
499 		generic_handle_domain_irq(adev->irq.domain, src_id);  in amdgpu_irq_dispatch()
501 	} else if (!adev->irq.client[client_id].sources) {  in amdgpu_irq_dispatch()
505 	} else if ((src = adev->irq.client[client_id].sources[src_id])) {  in amdgpu_irq_dispatch()
538 	amdgpu_ih_ring_write(&adev->irq.ih_soft, entry->iv_entry, num_dw);  in amdgpu_irq_delegate()
539 	schedule_work(&adev->irq.ih_soft_work);  in amdgpu_irq_delegate()
558 	spin_lock_irqsave(&adev->irq.lock, irqflags);  in amdgpu_irq_update()
568 	spin_unlock_irqrestore(&adev->irq.lock, irqflags);  in amdgpu_irq_update()
588 		if (!adev->irq.client[i].sources)  in amdgpu_irq_gpu_reset_resume_helper()
592 			struct amdgpu_irq_src *src = adev->irq.client[i].sources[j];  in amdgpu_irq_gpu_reset_resume_helper()
617 	if (!adev->irq.installed)  in amdgpu_irq_get()
647 	if (!adev->irq.installed)  in amdgpu_irq_put()
678 	if (!adev->irq.installed)  in amdgpu_irq_enabled()
690 /* XXX: Generic IRQ handling */
709  * amdgpu_irqdomain_map - create mapping between virtual and hardware IRQ numbers
711  * @d: amdgpu IRQ domain pointer (unused)
712  * @irq: virtual IRQ number
713  * @hwirq: hardware irq number
716  * IRQ.
722 				unsigned int irq, irq_hw_number_t hwirq)  in amdgpu_irqdomain_map()  argument
727 	irq_set_chip_and_handler(irq,  in amdgpu_irqdomain_map()
732 /* Implementation of methods for amdgpu IRQ domain */
738  * amdgpu_irq_add_domain - create a linear IRQ domain
742  * Creates an IRQ domain for GPU interrupt sources
750 	adev->irq.domain = irq_domain_add_linear(NULL, AMDGPU_MAX_IRQ_SRC_ID,  in amdgpu_irq_add_domain()
752 	if (!adev->irq.domain) {  in amdgpu_irq_add_domain()
753 		DRM_ERROR("GPU irq add domain failed\n");  in amdgpu_irq_add_domain()
761  * amdgpu_irq_remove_domain - remove the IRQ domain
765  * Removes the IRQ domain for GPU interrupt sources
770 	if (adev->irq.domain) {  in amdgpu_irq_remove_domain()
771 		irq_domain_remove(adev->irq.domain);  in amdgpu_irq_remove_domain()
772 		adev->irq.domain = NULL;  in amdgpu_irq_remove_domain()
782  * Creates mapping between a domain IRQ (GPU IH src id) and a Linux IRQ
787  * Linux IRQ
791 	adev->irq.virq[src_id] = irq_create_mapping(adev->irq.domain, src_id);  in amdgpu_irq_create_mapping()
793 	return adev->irq.virq[src_id];  in amdgpu_irq_create_mapping()