drm/panthor/panthor_device.h

1 /* SPDX-License-Identifier: GPL-2.0 or MIT */
10 #include <linux/io-pgtable.h>
34  * enum panthor_device_pm_state - PM state
51  * struct panthor_irq - IRQ data
62 	/** @mask: Current mask being applied to xxx_INT_MASK. */
63 	u32 mask;  member
70  * struct panthor_device - Panthor device
130 	/** @reset: Reset related fields. */
132 		/** @wq: Ordered worqueud used to schedule reset operations. */
135 		/** @work: Reset work. */
138 		/** @pending: Set to true if a reset is pending. */
140 	} reset;  member
168  * struct panthor_file - Panthor file
185  * panthor_device_schedule_reset() - Schedules a reset operation
189 	if (!atomic_cmpxchg(&ptdev->reset.pending, 0, 1) &&  in panthor_device_schedule_reset()
190 	    atomic_read(&ptdev->pm.state) == PANTHOR_DEVICE_PM_STATE_ACTIVE)  in panthor_device_schedule_reset()
191 		queue_work(ptdev->reset.wq, &ptdev->reset.work);  in panthor_device_schedule_reset()
195  * panthor_device_reset_is_pending() - Checks if a reset is pending.
197  * Return: true if a reset is pending, false otherwise.
201 	return atomic_read(&ptdev->reset.pending) != 0;  in panthor_device_reset_is_pending()
263  * panthor_exception_is_fault() - Checks if an exception is a fault.
277  * PANTHOR_IRQ_HANDLER() - Define interrupt handlers and the interrupt
280  * The boiler-plate to gracefully deal with shared interrupts is
281  * auto-generated. All you have to do is call PANTHOR_IRQ_HANDLER()
290 	struct panthor_device *ptdev = pirq->ptdev;						\
292 	if (atomic_read(&pirq->suspended))							\
304 	struct panthor_device *ptdev = pirq->ptdev;						\
308 		u32 status = gpu_read(ptdev, __reg_prefix ## _INT_RAWSTAT) & pirq->mask;	\
319 	if (!atomic_read(&pirq->suspended))							\
320 		gpu_write(ptdev, __reg_prefix ## _INT_MASK, pirq->mask);			\
327 	pirq->mask = 0;										\
328 	gpu_write(pirq->ptdev, __reg_prefix ## _INT_MASK, 0);					\
329 	synchronize_irq(pirq->irq);								\
330 	atomic_set(&pirq->suspended, true);							\
333 static inline void panthor_ ## __name ## _irq_resume(struct panthor_irq *pirq, u32 mask)	\
335 	atomic_set(&pirq->suspended, false);							\
336 	pirq->mask = mask;									\
337 	gpu_write(pirq->ptdev, __reg_prefix ## _INT_CLEAR, mask);				\
338 	gpu_write(pirq->ptdev, __reg_prefix ## _INT_MASK, mask);				\
343 					      int irq, u32 mask)				\
345 	pirq->ptdev = ptdev;									\
346 	pirq->irq = irq;									\
347 	panthor_ ## __name ## _irq_resume(pirq, mask);						\
349 	return devm_request_threaded_irq(ptdev->base.dev, irq,					\
352 					 IRQF_SHARED, KBUILD_MODNAME "-" # __name,		\