1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Tegra host1x Interrupt Management
 4 *
 5 * Copyright (c) 2010-2021, NVIDIA Corporation.
 6 */
 7
 8#ifndef __HOST1X_INTR_H
 9#define __HOST1X_INTR_H
10
 
 
 
 
11struct host1x;
12struct host1x_syncpt_fence;
13
14struct host1x_intr_irq_data {
15	struct host1x *host;
16	u32 offset;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
17};
18
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
19/* Initialize host1x sync point interrupt */
20int host1x_intr_init(struct host1x *host);
21
22/* Deinitialize host1x sync point interrupt */
23void host1x_intr_deinit(struct host1x *host);
24
25/* Enable host1x sync point interrupt */
26void host1x_intr_start(struct host1x *host);
27
28/* Disable host1x sync point interrupt */
29void host1x_intr_stop(struct host1x *host);
30
31void host1x_intr_handle_interrupt(struct host1x *host, unsigned int id);
32
33void host1x_intr_add_fence_locked(struct host1x *host, struct host1x_syncpt_fence *fence);
34
35bool host1x_intr_remove_fence(struct host1x *host, struct host1x_syncpt_fence *fence);
36
37#endif

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Tegra host1x Interrupt Management
 4 *
 5 * Copyright (c) 2010-2013, NVIDIA Corporation.
 6 */
 7
 8#ifndef __HOST1X_INTR_H
 9#define __HOST1X_INTR_H
10
11#include <linux/interrupt.h>
12#include <linux/workqueue.h>
13
14struct host1x_syncpt;
15struct host1x;
 
16
17enum host1x_intr_action {
18	/*
19	 * Perform cleanup after a submit has completed.
20	 * 'data' points to a channel
21	 */
22	HOST1X_INTR_ACTION_SUBMIT_COMPLETE = 0,
23
24	/*
25	 * Wake up a  task.
26	 * 'data' points to a wait_queue_head_t
27	 */
28	HOST1X_INTR_ACTION_WAKEUP,
29
30	/*
31	 * Wake up a interruptible task.
32	 * 'data' points to a wait_queue_head_t
33	 */
34	HOST1X_INTR_ACTION_WAKEUP_INTERRUPTIBLE,
35
36	HOST1X_INTR_ACTION_COUNT
37};
38
39struct host1x_syncpt_intr {
40	spinlock_t lock;
41	struct list_head wait_head;
42	char thresh_irq_name[12];
43	struct work_struct work;
44};
45
46struct host1x_waitlist {
47	struct list_head list;
48	struct kref refcount;
49	u32 thresh;
50	enum host1x_intr_action action;
51	atomic_t state;
52	void *data;
53	int count;
54};
55
56/*
57 * Schedule an action to be taken when a sync point reaches the given threshold.
58 *
59 * @id the sync point
60 * @thresh the threshold
61 * @action the action to take
62 * @data a pointer to extra data depending on action, see above
63 * @waiter waiter structure - assumes ownership
64 * @ref must be passed if cancellation is possible, else NULL
65 *
66 * This is a non-blocking api.
67 */
68int host1x_intr_add_action(struct host1x *host, struct host1x_syncpt *syncpt,
69			   u32 thresh, enum host1x_intr_action action,
70			   void *data, struct host1x_waitlist *waiter,
71			   void **ref);
72
73/*
74 * Unreference an action submitted to host1x_intr_add_action().
75 * You must call this if you passed non-NULL as ref.
76 * @ref the ref returned from host1x_intr_add_action()
77 */
78void host1x_intr_put_ref(struct host1x *host, unsigned int id, void *ref);
79
80/* Initialize host1x sync point interrupt */
81int host1x_intr_init(struct host1x *host, unsigned int irq_sync);
82
83/* Deinitialize host1x sync point interrupt */
84void host1x_intr_deinit(struct host1x *host);
85
86/* Enable host1x sync point interrupt */
87void host1x_intr_start(struct host1x *host);
88
89/* Disable host1x sync point interrupt */
90void host1x_intr_stop(struct host1x *host);
91
92irqreturn_t host1x_syncpt_thresh_fn(void *dev_id);
 
 
 
 
 
93#endif