1 // SPDX-License-Identifier: GPL-2.0-only
5  * Copyright (c) 2010-2021, NVIDIA Corporation.
19 	list_for_each_entry_reverse(fence_in_list, &list->list, list) {  in host1x_intr_add_fence_to_list()
20 		if ((s32)(fence_in_list->threshold - fence->threshold) <= 0) {  in host1x_intr_add_fence_to_list()
22 			list_add(&fence->list, &fence_in_list->list);  in host1x_intr_add_fence_to_list()
28 	list_add(&fence->list, &list->list);  in host1x_intr_add_fence_to_list()
31 static void host1x_intr_update_hw_state(struct host1x *host, struct host1x_syncpt *sp)  in host1x_intr_update_hw_state()  argument
35 	if (!list_empty(&sp->fences.list)) {  in host1x_intr_update_hw_state()
36 		fence = list_first_entry(&sp->fences.list, struct host1x_syncpt_fence, list);  in host1x_intr_update_hw_state()
38 		host1x_hw_intr_set_syncpt_threshold(host, sp->id, fence->threshold);  in host1x_intr_update_hw_state()
39 		host1x_hw_intr_enable_syncpt_intr(host, sp->id);  in host1x_intr_update_hw_state()
41 		host1x_hw_intr_disable_syncpt_intr(host, sp->id);  in host1x_intr_update_hw_state()
45 void host1x_intr_add_fence_locked(struct host1x *host, struct host1x_syncpt_fence *fence)  in host1x_intr_add_fence_locked()  argument
47 	struct host1x_fence_list *fence_list = &fence->sp->fences;  in host1x_intr_add_fence_locked()
49 	INIT_LIST_HEAD(&fence->list);  in host1x_intr_add_fence_locked()
52 	host1x_intr_update_hw_state(host, fence->sp);  in host1x_intr_add_fence_locked()
55 bool host1x_intr_remove_fence(struct host1x *host, struct host1x_syncpt_fence *fence)  in host1x_intr_remove_fence()  argument
57 	struct host1x_fence_list *fence_list = &fence->sp->fences;  in host1x_intr_remove_fence()
60 	spin_lock_irqsave(&fence_list->lock, irqflags);  in host1x_intr_remove_fence()
62 	if (list_empty(&fence->list)) {  in host1x_intr_remove_fence()
63 		spin_unlock_irqrestore(&fence_list->lock, irqflags);  in host1x_intr_remove_fence()
67 	list_del_init(&fence->list);  in host1x_intr_remove_fence()
68 	host1x_intr_update_hw_state(host, fence->sp);  in host1x_intr_remove_fence()
70 	spin_unlock_irqrestore(&fence_list->lock, irqflags);  in host1x_intr_remove_fence()
75 void host1x_intr_handle_interrupt(struct host1x *host, unsigned int id)  in host1x_intr_handle_interrupt()  argument
77 	struct host1x_syncpt *sp = &host->syncpt[id];  in host1x_intr_handle_interrupt()
83 	spin_lock(&sp->fences.lock);  in host1x_intr_handle_interrupt()
85 	list_for_each_entry_safe(fence, tmp, &sp->fences.list, list) {  in host1x_intr_handle_interrupt()
86 		if (((value - fence->threshold) & 0x80000000U) != 0U) {  in host1x_intr_handle_interrupt()
91 		list_del_init(&fence->list);  in host1x_intr_handle_interrupt()
95 	/* Re-enable interrupt if necessary */  in host1x_intr_handle_interrupt()
96 	host1x_intr_update_hw_state(host, sp);  in host1x_intr_handle_interrupt()
98 	spin_unlock(&sp->fences.lock);  in host1x_intr_handle_interrupt()
101 int host1x_intr_init(struct host1x *host)  in host1x_intr_init()  argument
104 	unsigned int id;  in host1x_intr_init()  local
107 	mutex_init(&host->intr_mutex);  in host1x_intr_init()
109 	for (id = 0; id < host1x_syncpt_nb_pts(host); ++id) {  in host1x_intr_init()
110 		struct host1x_syncpt *syncpt = &host->syncpt[id];  in host1x_intr_init()
112 		spin_lock_init(&syncpt->fences.lock);  in host1x_intr_init()
113 		INIT_LIST_HEAD(&syncpt->fences.list);  in host1x_intr_init()
116 	irq_data = devm_kcalloc(host->dev, host->num_syncpt_irqs, sizeof(irq_data[0]), GFP_KERNEL);  in host1x_intr_init()
118 		return -ENOMEM;  in host1x_intr_init()
120 	host1x_hw_intr_disable_all_syncpt_intrs(host);  in host1x_intr_init()
122 	for (i = 0; i < host->num_syncpt_irqs; i++) {  in host1x_intr_init()
123 		irq_data[i].host = host;  in host1x_intr_init()
126 		err = devm_request_irq(host->dev, host->syncpt_irqs[i],  in host1x_intr_init()
127 				       host->intr_op->isr, IRQF_SHARED,  in host1x_intr_init()
136 void host1x_intr_deinit(struct host1x *host)  in host1x_intr_deinit()  argument
140 void host1x_intr_start(struct host1x *host)  in host1x_intr_start()  argument
142 	u32 hz = clk_get_rate(host->clk);  in host1x_intr_start()
145 	mutex_lock(&host->intr_mutex);  in host1x_intr_start()
146 	err = host1x_hw_intr_init_host_sync(host, DIV_ROUND_UP(hz, 1000000));  in host1x_intr_start()
148 		mutex_unlock(&host->intr_mutex);  in host1x_intr_start()
151 	mutex_unlock(&host->intr_mutex);  in host1x_intr_start()
154 void host1x_intr_stop(struct host1x *host)  in host1x_intr_stop()  argument
156 	host1x_hw_intr_disable_all_syncpt_intrs(host);  in host1x_intr_stop()