WebSVN – Kolibri OS – Diff – /drivers/video/drm/radeon/radeon_fence.c


/*
 * Copyright 2009 Jerome Glisse.
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 * USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 */
/*
 * Authors:
 *    Jerome Glisse 
 *    Dave Airlie
 */
#include 
#include 
#include 
#include 
#include 
#include "drmP.h"
#include "drm.h"
#include "radeon_reg.h"
#include "radeon.h"
 
int radeon_fence_emit(struct radeon_device *rdev, struct radeon_fence *fence)
{
	unsigned long irq_flags;
 
	write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
	if (fence->emited) {
		write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
		return 0;
	}
	fence->seq = atomic_add_return(1, &rdev->fence_drv.seq);
	if (!rdev->cp.ready) {
		/* FIXME: cp is not running assume everythings is done right
		 * away
		 */
		WREG32(rdev->fence_drv.scratch_reg, fence->seq);
	} else
		radeon_fence_ring_emit(rdev, fence);
 
	fence->emited = true;
	fence->timeout = jiffies + ((2000 * HZ) / 1000);
	list_del(&fence->list);
	list_add_tail(&fence->list, &rdev->fence_drv.emited);
	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
	return 0;
}
 
static bool radeon_fence_poll_locked(struct radeon_device *rdev)
{
	struct radeon_fence *fence;
	struct list_head *i, *n;
	uint32_t seq;
	bool wake = false;
 
	if (rdev == NULL) {
		return true;
	}
	if (rdev->shutdown) {
		return true;
	}
	seq = RREG32(rdev->fence_drv.scratch_reg);
	rdev->fence_drv.last_seq = seq;
	n = NULL;
	list_for_each(i, &rdev->fence_drv.emited) {
		fence = list_entry(i, struct radeon_fence, list);
		if (fence->seq == seq) {
			n = i;
			break;
		}
	}
	/* all fence previous to this one are considered as signaled */
	if (n) {
		i = n;
		do {
			n = i->prev;
			list_del(i);
			list_add_tail(i, &rdev->fence_drv.signaled);
			fence = list_entry(i, struct radeon_fence, list);
			fence->signaled = true;
			i = n;
		} while (i != &rdev->fence_drv.emited);
		wake = true;
	}
	return wake;
}
 
static void radeon_fence_destroy(struct kref *kref)
{
	unsigned long irq_flags;
        struct radeon_fence *fence;
 
	fence = container_of(kref, struct radeon_fence, kref);
	write_lock_irqsave(&fence->rdev->fence_drv.lock, irq_flags);
	list_del(&fence->list);
	fence->emited = false;
	write_unlock_irqrestore(&fence->rdev->fence_drv.lock, irq_flags);
	kfree(fence);
}
 
int radeon_fence_create(struct radeon_device *rdev, struct radeon_fence **fence)
{
	unsigned long irq_flags;
 
	*fence = kmalloc(sizeof(struct radeon_fence), GFP_KERNEL);
	if ((*fence) == NULL) {
		return -ENOMEM;
	}
	kref_init(&((*fence)->kref));
	(*fence)->rdev = rdev;
	(*fence)->emited = false;
	(*fence)->signaled = false;
	(*fence)->seq = 0;
	INIT_LIST_HEAD(&(*fence)->list);
 
	write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
	list_add_tail(&(*fence)->list, &rdev->fence_drv.created);
	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
	return 0;
}
 
 
bool radeon_fence_signaled(struct radeon_fence *fence)
{
 
	unsigned long irq_flags;
	bool signaled = false;
 
	if (!fence)
		return true;
 
	if (fence->rdev->gpu_lockup)
		return true;
 
	write_lock_irqsave(&fence->rdev->fence_drv.lock, irq_flags);
	signaled = fence->signaled;
	/* if we are shuting down report all fence as signaled */
	if (fence->rdev->shutdown) {
		signaled = true;
	}
	if (!fence->emited) {
		WARN(1, "Querying an unemited fence : %p !\n", fence);
		signaled = true;
	}
	if (!signaled) {
		radeon_fence_poll_locked(fence->rdev);
		signaled = fence->signaled;
	}
	write_unlock_irqrestore(&fence->rdev->fence_drv.lock, irq_flags);
	return signaled;
}
 
int radeon_fence_wait(struct radeon_fence *fence, bool intr)
{
	struct radeon_device *rdev;
	unsigned long cur_jiffies;
	unsigned long timeout;
	bool expired = false;
	int r;
 
	if (fence == NULL) {
		WARN(1, "Querying an invalid fence : %p !\n", fence);
		return 0;
	}
	rdev = fence->rdev;
	if (radeon_fence_signaled(fence)) {
		return 0;
	}
 
retry:
	cur_jiffies = jiffies;
	timeout = HZ / 100;
	if (time_after(fence->timeout, cur_jiffies)) {
		timeout = fence->timeout - cur_jiffies;
	}
 
	if (intr) {
		radeon_irq_kms_sw_irq_get(rdev);
		r = wait_event_interruptible_timeout(rdev->fence_drv.queue,
				radeon_fence_signaled(fence), timeout);
		radeon_irq_kms_sw_irq_put(rdev);
		if (unlikely(r < 0))
			return r;
	} else {
		radeon_irq_kms_sw_irq_get(rdev);
		r = wait_event_timeout(rdev->fence_drv.queue,
			 radeon_fence_signaled(fence), timeout);
		radeon_irq_kms_sw_irq_put(rdev);
	}
	if (unlikely(!radeon_fence_signaled(fence))) {
		if (unlikely(r == 0)) {
			expired = true;
		}
		if (unlikely(expired)) {
			timeout = 1;
			if (time_after(cur_jiffies, fence->timeout)) {
				timeout = cur_jiffies - fence->timeout;
			}
			timeout = jiffies_to_msecs(timeout);
			if (timeout > 500) {
				DRM_ERROR("fence(%p:0x%08X) %lums timeout "
					  "going to reset GPU\n",
					  fence, fence->seq, timeout);
				radeon_gpu_reset(rdev);
				WREG32(rdev->fence_drv.scratch_reg, fence->seq);
			}
		}
		goto retry;
	}
	if (unlikely(expired)) {
		rdev->fence_drv.count_timeout++;
		cur_jiffies = jiffies;
		timeout = 1;
		if (time_after(cur_jiffies, fence->timeout)) {
			timeout = cur_jiffies - fence->timeout;
		}
		timeout = jiffies_to_msecs(timeout);
		DRM_ERROR("fence(%p:0x%08X) %lums timeout\n",
			  fence, fence->seq, timeout);
		DRM_ERROR("last signaled fence(0x%08X)\n",
			  rdev->fence_drv.last_seq);
	}
	return 0;
}
 
int radeon_fence_wait_next(struct radeon_device *rdev)
{
	unsigned long irq_flags;
	struct radeon_fence *fence;
	int r;
 
	if (rdev->gpu_lockup) {
		return 0;
	}
	write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
	if (list_empty(&rdev->fence_drv.emited)) {
		write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
		return 0;
	}
	fence = list_entry(rdev->fence_drv.emited.next,
			   struct radeon_fence, list);
	radeon_fence_ref(fence);
	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
	r = radeon_fence_wait(fence, false);
	radeon_fence_unref(&fence);
	return r;
}
 
int radeon_fence_wait_last(struct radeon_device *rdev)
{
	unsigned long irq_flags;
	struct radeon_fence *fence;
	int r;
 
	if (rdev->gpu_lockup) {
		return 0;
	}
	write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
	if (list_empty(&rdev->fence_drv.emited)) {
		write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
		return 0;
	}
	fence = list_entry(rdev->fence_drv.emited.prev,
			   struct radeon_fence, list);
	radeon_fence_ref(fence);
	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
	r = radeon_fence_wait(fence, false);
	radeon_fence_unref(&fence);
	return r;
}
 
struct radeon_fence *radeon_fence_ref(struct radeon_fence *fence)
{
	kref_get(&fence->kref);
	return fence;
}
 
void radeon_fence_unref(struct radeon_fence **fence)
{
	struct radeon_fence *tmp = *fence;
 
	*fence = NULL;
	if (tmp) {
		kref_put(&tmp->kref, &radeon_fence_destroy);
	}
}
 
void radeon_fence_process(struct radeon_device *rdev)
{
	unsigned long irq_flags;
	bool wake;
 
	write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
	wake = radeon_fence_poll_locked(rdev);
	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
	if (wake) {
		wake_up_all(&rdev->fence_drv.queue);
	}
}
 
int radeon_fence_driver_init(struct radeon_device *rdev)
{
	unsigned long irq_flags;
	int r;
 
	write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
	r = radeon_scratch_get(rdev, &rdev->fence_drv.scratch_reg);
	if (r) {
		dev_err(rdev->dev, "fence failed to get scratch register\n");
		write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
		return r;
	}
	WREG32(rdev->fence_drv.scratch_reg, 0);
	atomic_set(&rdev->fence_drv.seq, 0);
	INIT_LIST_HEAD(&rdev->fence_drv.created);
	INIT_LIST_HEAD(&rdev->fence_drv.emited);
	INIT_LIST_HEAD(&rdev->fence_drv.signaled);
	rdev->fence_drv.count_timeout = 0;
	init_waitqueue_head(&rdev->fence_drv.queue);
	rdev->fence_drv.initialized = true;
	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
	if (radeon_debugfs_fence_init(rdev)) {
		dev_err(rdev->dev, "fence debugfs file creation failed\n");
	}
	return 0;
}
 
void radeon_fence_driver_fini(struct radeon_device *rdev)
{
	unsigned long irq_flags;
 
	if (!rdev->fence_drv.initialized)
		return;
	wake_up_all(&rdev->fence_drv.queue);
	write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
	radeon_scratch_free(rdev, rdev->fence_drv.scratch_reg);
	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
	rdev->fence_drv.initialized = false;
}
 
 
/*
 * Fence debugfs
 */
#if defined(CONFIG_DEBUG_FS)
static int radeon_debugfs_fence_info(struct seq_file *m, void *data)
{
	struct drm_info_node *node = (struct drm_info_node *)m->private;
	struct drm_device *dev = node->minor->dev;
	struct radeon_device *rdev = dev->dev_private;
	struct radeon_fence *fence;
 
	seq_printf(m, "Last signaled fence 0x%08X\n",
		   RREG32(rdev->fence_drv.scratch_reg));
	if (!list_empty(&rdev->fence_drv.emited)) {
		   fence = list_entry(rdev->fence_drv.emited.prev,
				      struct radeon_fence, list);
		   seq_printf(m, "Last emited fence %p with 0x%08X\n",
			      fence,  fence->seq);
	}
	return 0;
}
 
static struct drm_info_list radeon_debugfs_fence_list[] = {
	{"radeon_fence_info", &radeon_debugfs_fence_info, 0, NULL},
};
#endif
 
int radeon_debugfs_fence_init(struct radeon_device *rdev)
{
#if defined(CONFIG_DEBUG_FS)
	return radeon_debugfs_add_files(rdev, radeon_debugfs_fence_list, 1);
#else
	return 0;
#endif
}

Rev 1321	Rev 1404
1	/*	1	/*
2	* Copyright 2009 Jerome Glisse.	2	* Copyright 2009 Jerome Glisse.
3	* All Rights Reserved.	3	* All Rights Reserved.
4	*	4	*
5	* Permission is hereby granted, free of charge, to any person obtaining a	5	* Permission is hereby granted, free of charge, to any person obtaining a
6	* copy of this software and associated documentation files (the	6	* copy of this software and associated documentation files (the
7	* "Software"), to deal in the Software without restriction, including	7	* "Software"), to deal in the Software without restriction, including
8	* without limitation the rights to use, copy, modify, merge, publish,	8	* without limitation the rights to use, copy, modify, merge, publish,
9	* distribute, sub license, and/or sell copies of the Software, and to	9	* distribute, sub license, and/or sell copies of the Software, and to
10	* permit persons to whom the Software is furnished to do so, subject to	10	* permit persons to whom the Software is furnished to do so, subject to
11	* the following conditions:	11	* the following conditions:
12	*	12	*
13	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR	13	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,	14	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15	* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL	15	* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
16	* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,	16	* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
17	* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR	17	* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
18	* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE	18	* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
19	* USE OR OTHER DEALINGS IN THE SOFTWARE.	19	* USE OR OTHER DEALINGS IN THE SOFTWARE.
20	*	20	*
21	* The above copyright notice and this permission notice (including the	21	* The above copyright notice and this permission notice (including the
22	* next paragraph) shall be included in all copies or substantial portions	22	* next paragraph) shall be included in all copies or substantial portions
23	* of the Software.	23	* of the Software.
24	*	24	*
25	*/	25	*/
26	/*	26	/*
27	* Authors:	27	* Authors:
28	* Jerome Glisse	28	* Jerome Glisse
29	* Dave Airlie	29	* Dave Airlie
30	*/	30	*/
31	#include	31	#include
32	#include	32	#include
33	#include	33	#include
34	#include	34	#include
35	#include	35	#include
36	#include "drmP.h"	36	#include "drmP.h"
37	#include "drm.h"	37	#include "drm.h"
38	#include "radeon_reg.h"	38	#include "radeon_reg.h"
39	#include "radeon.h"	39	#include "radeon.h"
40		40
41	int radeon_fence_emit(struct radeon_device rdev, struct radeon_fence fence)	41	int radeon_fence_emit(struct radeon_device rdev, struct radeon_fence fence)
42	{	42	{
43	unsigned long irq_flags;	43	unsigned long irq_flags;
44		44
45	write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);	45	write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
46	if (fence->emited) {	46	if (fence->emited) {
47	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);	47	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
48	return 0;	48	return 0;
49	}	49	}
50	fence->seq = atomic_add_return(1, &rdev->fence_drv.seq);	50	fence->seq = atomic_add_return(1, &rdev->fence_drv.seq);
51	if (!rdev->cp.ready) {	51	if (!rdev->cp.ready) {
52	/* FIXME: cp is not running assume everythings is done right	52	/* FIXME: cp is not running assume everythings is done right
53	* away	53	* away
54	*/	54	*/
55	WREG32(rdev->fence_drv.scratch_reg, fence->seq);	55	WREG32(rdev->fence_drv.scratch_reg, fence->seq);
56	} else	56	} else
57	radeon_fence_ring_emit(rdev, fence);	57	radeon_fence_ring_emit(rdev, fence);
58		58
59	fence->emited = true;	59	fence->emited = true;
60	fence->timeout = jiffies + ((2000 * HZ) / 1000);	60	fence->timeout = jiffies + ((2000 * HZ) / 1000);
61	list_del(&fence->list);	61	list_del(&fence->list);
62	list_add_tail(&fence->list, &rdev->fence_drv.emited);	62	list_add_tail(&fence->list, &rdev->fence_drv.emited);
63	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);	63	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
64	return 0;	64	return 0;
65	}	65	}
66		66
67	static bool radeon_fence_poll_locked(struct radeon_device *rdev)	67	static bool radeon_fence_poll_locked(struct radeon_device *rdev)
68	{	68	{
69	struct radeon_fence *fence;	69	struct radeon_fence *fence;
70	struct list_head i, n;	70	struct list_head i, n;
71	uint32_t seq;	71	uint32_t seq;
72	bool wake = false;	72	bool wake = false;
73		73
74	if (rdev == NULL) {	74	if (rdev == NULL) {
75	return true;	75	return true;
76	}	76	}
77	if (rdev->shutdown) {	77	if (rdev->shutdown) {
78	return true;	78	return true;
79	}	79	}
80	seq = RREG32(rdev->fence_drv.scratch_reg);	80	seq = RREG32(rdev->fence_drv.scratch_reg);
81	rdev->fence_drv.last_seq = seq;	81	rdev->fence_drv.last_seq = seq;
82	n = NULL;	82	n = NULL;
83	list_for_each(i, &rdev->fence_drv.emited) {	83	list_for_each(i, &rdev->fence_drv.emited) {
84	fence = list_entry(i, struct radeon_fence, list);	84	fence = list_entry(i, struct radeon_fence, list);
85	if (fence->seq == seq) {	85	if (fence->seq == seq) {
86	n = i;	86	n = i;
87	break;	87	break;
88	}	88	}
89	}	89	}
90	/* all fence previous to this one are considered as signaled */	90	/* all fence previous to this one are considered as signaled */
91	if (n) {	91	if (n) {
92	i = n;	92	i = n;
93	do {	93	do {
94	n = i->prev;	94	n = i->prev;
95	list_del(i);	95	list_del(i);
96	list_add_tail(i, &rdev->fence_drv.signaled);	96	list_add_tail(i, &rdev->fence_drv.signaled);
97	fence = list_entry(i, struct radeon_fence, list);	97	fence = list_entry(i, struct radeon_fence, list);
98	fence->signaled = true;	98	fence->signaled = true;
99	i = n;	99	i = n;
100	} while (i != &rdev->fence_drv.emited);	100	} while (i != &rdev->fence_drv.emited);
101	wake = true;	101	wake = true;
102	}	102	}
103	return wake;	103	return wake;
104	}	104	}
105		105
106	static void radeon_fence_destroy(struct kref *kref)	106	static void radeon_fence_destroy(struct kref *kref)
107	{	107	{
108	unsigned long irq_flags;	108	unsigned long irq_flags;
109	struct radeon_fence *fence;	109	struct radeon_fence *fence;
110		110
111	fence = container_of(kref, struct radeon_fence, kref);	111	fence = container_of(kref, struct radeon_fence, kref);
112	write_lock_irqsave(&fence->rdev->fence_drv.lock, irq_flags);	112	write_lock_irqsave(&fence->rdev->fence_drv.lock, irq_flags);
113	list_del(&fence->list);	113	list_del(&fence->list);
114	fence->emited = false;	114	fence->emited = false;
115	write_unlock_irqrestore(&fence->rdev->fence_drv.lock, irq_flags);	115	write_unlock_irqrestore(&fence->rdev->fence_drv.lock, irq_flags);
116	kfree(fence);	116	kfree(fence);
117	}	117	}
118		118
119	int radeon_fence_create(struct radeon_device rdev, struct radeon_fence *fence)	119	int radeon_fence_create(struct radeon_device rdev, struct radeon_fence *fence)
120	{	120	{
121	unsigned long irq_flags;	121	unsigned long irq_flags;
122		122
123	*fence = kmalloc(sizeof(struct radeon_fence), GFP_KERNEL);	123	*fence = kmalloc(sizeof(struct radeon_fence), GFP_KERNEL);
124	if ((*fence) == NULL) {	124	if ((*fence) == NULL) {
125	return -ENOMEM;	125	return -ENOMEM;
126	}	126	}
127	kref_init(&((*fence)->kref));	127	kref_init(&((*fence)->kref));
128	(*fence)->rdev = rdev;	128	(*fence)->rdev = rdev;
129	(*fence)->emited = false;	129	(*fence)->emited = false;
130	(*fence)->signaled = false;	130	(*fence)->signaled = false;
131	(*fence)->seq = 0;	131	(*fence)->seq = 0;
132	INIT_LIST_HEAD(&(*fence)->list);	132	INIT_LIST_HEAD(&(*fence)->list);
133		133
134	write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);	134	write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
135	list_add_tail(&(*fence)->list, &rdev->fence_drv.created);	135	list_add_tail(&(*fence)->list, &rdev->fence_drv.created);
136	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);	136	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
137	return 0;	137	return 0;
138	}	138	}
139		139
140		140
141	bool radeon_fence_signaled(struct radeon_fence *fence)	141	bool radeon_fence_signaled(struct radeon_fence *fence)
142	{	142	{
143	struct radeon_device *rdev = fence->rdev;	-
144	unsigned long irq_flags;	143	unsigned long irq_flags;
145	bool signaled = false;	144	bool signaled = false;
146		145
147	if (rdev->gpu_lockup) {	146	if (!fence)
148	return true;	147	return true;
149	}	148
150	if (fence == NULL) {	149	if (fence->rdev->gpu_lockup)
151	return true;	150	return true;
152	}	151
153	write_lock_irqsave(&fence->rdev->fence_drv.lock, irq_flags);	152	write_lock_irqsave(&fence->rdev->fence_drv.lock, irq_flags);
154	signaled = fence->signaled;	153	signaled = fence->signaled;
155	/* if we are shuting down report all fence as signaled */	154	/* if we are shuting down report all fence as signaled */
156	if (fence->rdev->shutdown) {	155	if (fence->rdev->shutdown) {
157	signaled = true;	156	signaled = true;
158	}	157	}
159	if (!fence->emited) {	158	if (!fence->emited) {
160	WARN(1, "Querying an unemited fence : %p !\n", fence);	159	WARN(1, "Querying an unemited fence : %p !\n", fence);
161	signaled = true;	160	signaled = true;
162	}	161	}
163	if (!signaled) {	162	if (!signaled) {
164	radeon_fence_poll_locked(fence->rdev);	163	radeon_fence_poll_locked(fence->rdev);
165	signaled = fence->signaled;	164	signaled = fence->signaled;
166	}	165	}
167	write_unlock_irqrestore(&fence->rdev->fence_drv.lock, irq_flags);	166	write_unlock_irqrestore(&fence->rdev->fence_drv.lock, irq_flags);
168	return signaled;	167	return signaled;
169	}	168	}
170		169
171	int radeon_fence_wait(struct radeon_fence *fence, bool intr)	170	int radeon_fence_wait(struct radeon_fence *fence, bool intr)
172	{	171	{
173	struct radeon_device *rdev;	172	struct radeon_device *rdev;
174	unsigned long cur_jiffies;	173	unsigned long cur_jiffies;
175	unsigned long timeout;	174	unsigned long timeout;
176	bool expired = false;	175	bool expired = false;
177	int r;	176	int r;
178		177
179	if (fence == NULL) {	178	if (fence == NULL) {
180	WARN(1, "Querying an invalid fence : %p !\n", fence);	179	WARN(1, "Querying an invalid fence : %p !\n", fence);
181	return 0;	180	return 0;
182	}	181	}
183	rdev = fence->rdev;	182	rdev = fence->rdev;
184	if (radeon_fence_signaled(fence)) {	183	if (radeon_fence_signaled(fence)) {
185	return 0;	184	return 0;
186	}	185	}
187		186
188	retry:	187	retry:
189	cur_jiffies = jiffies;	188	cur_jiffies = jiffies;
190	timeout = HZ / 100;	189	timeout = HZ / 100;
191	if (time_after(fence->timeout, cur_jiffies)) {	190	if (time_after(fence->timeout, cur_jiffies)) {
192	timeout = fence->timeout - cur_jiffies;	191	timeout = fence->timeout - cur_jiffies;
193	}	192	}
194		193
195	if (intr) {	194	if (intr) {
196	radeon_irq_kms_sw_irq_get(rdev);	195	radeon_irq_kms_sw_irq_get(rdev);
197	r = wait_event_interruptible_timeout(rdev->fence_drv.queue,	196	r = wait_event_interruptible_timeout(rdev->fence_drv.queue,
198	radeon_fence_signaled(fence), timeout);	197	radeon_fence_signaled(fence), timeout);
199	radeon_irq_kms_sw_irq_put(rdev);	198	radeon_irq_kms_sw_irq_put(rdev);
200	if (unlikely(r < 0))	199	if (unlikely(r < 0))
201	return r;	200	return r;
202	} else {	201	} else {
203	radeon_irq_kms_sw_irq_get(rdev);	202	radeon_irq_kms_sw_irq_get(rdev);
204	r = wait_event_timeout(rdev->fence_drv.queue,	203	r = wait_event_timeout(rdev->fence_drv.queue,
205	radeon_fence_signaled(fence), timeout);	204	radeon_fence_signaled(fence), timeout);
206	radeon_irq_kms_sw_irq_put(rdev);	205	radeon_irq_kms_sw_irq_put(rdev);
207	}	206	}
208	if (unlikely(!radeon_fence_signaled(fence))) {	207	if (unlikely(!radeon_fence_signaled(fence))) {
209	if (unlikely(r == 0)) {	208	if (unlikely(r == 0)) {
210	expired = true;	209	expired = true;
211	}	210	}
212	if (unlikely(expired)) {	211	if (unlikely(expired)) {
213	timeout = 1;	212	timeout = 1;
214	if (time_after(cur_jiffies, fence->timeout)) {	213	if (time_after(cur_jiffies, fence->timeout)) {
215	timeout = cur_jiffies - fence->timeout;	214	timeout = cur_jiffies - fence->timeout;
216	}	215	}
217	timeout = jiffies_to_msecs(timeout);	216	timeout = jiffies_to_msecs(timeout);
218	if (timeout > 500) {	217	if (timeout > 500) {
219	DRM_ERROR("fence(%p:0x%08X) %lums timeout "	218	DRM_ERROR("fence(%p:0x%08X) %lums timeout "
220	"going to reset GPU\n",	219	"going to reset GPU\n",
221	fence, fence->seq, timeout);	220	fence, fence->seq, timeout);
222	radeon_gpu_reset(rdev);	221	radeon_gpu_reset(rdev);
223	WREG32(rdev->fence_drv.scratch_reg, fence->seq);	222	WREG32(rdev->fence_drv.scratch_reg, fence->seq);
224	}	223	}
225	}	224	}
226	goto retry;	225	goto retry;
227	}	226	}
228	if (unlikely(expired)) {	227	if (unlikely(expired)) {
229	rdev->fence_drv.count_timeout++;	228	rdev->fence_drv.count_timeout++;
230	cur_jiffies = jiffies;	229	cur_jiffies = jiffies;
231	timeout = 1;	230	timeout = 1;
232	if (time_after(cur_jiffies, fence->timeout)) {	231	if (time_after(cur_jiffies, fence->timeout)) {
233	timeout = cur_jiffies - fence->timeout;	232	timeout = cur_jiffies - fence->timeout;
234	}	233	}
235	timeout = jiffies_to_msecs(timeout);	234	timeout = jiffies_to_msecs(timeout);
236	DRM_ERROR("fence(%p:0x%08X) %lums timeout\n",	235	DRM_ERROR("fence(%p:0x%08X) %lums timeout\n",
237	fence, fence->seq, timeout);	236	fence, fence->seq, timeout);
238	DRM_ERROR("last signaled fence(0x%08X)\n",	237	DRM_ERROR("last signaled fence(0x%08X)\n",
239	rdev->fence_drv.last_seq);	238	rdev->fence_drv.last_seq);
240	}	239	}
241	return 0;	240	return 0;
242	}	241	}
243		242
244	int radeon_fence_wait_next(struct radeon_device *rdev)	243	int radeon_fence_wait_next(struct radeon_device *rdev)
245	{	244	{
246	unsigned long irq_flags;	245	unsigned long irq_flags;
247	struct radeon_fence *fence;	246	struct radeon_fence *fence;
248	int r;	247	int r;
249		248
250	if (rdev->gpu_lockup) {	249	if (rdev->gpu_lockup) {
251	return 0;	250	return 0;
252	}	251	}
253	write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);	252	write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
254	if (list_empty(&rdev->fence_drv.emited)) {	253	if (list_empty(&rdev->fence_drv.emited)) {
255	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);	254	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
256	return 0;	255	return 0;
257	}	256	}
258	fence = list_entry(rdev->fence_drv.emited.next,	257	fence = list_entry(rdev->fence_drv.emited.next,
259	struct radeon_fence, list);	258	struct radeon_fence, list);
260	radeon_fence_ref(fence);	259	radeon_fence_ref(fence);
261	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);	260	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
262	r = radeon_fence_wait(fence, false);	261	r = radeon_fence_wait(fence, false);
263	radeon_fence_unref(&fence);	262	radeon_fence_unref(&fence);
264	return r;	263	return r;
265	}	264	}
266		265
267	int radeon_fence_wait_last(struct radeon_device *rdev)	266	int radeon_fence_wait_last(struct radeon_device *rdev)
268	{	267	{
269	unsigned long irq_flags;	268	unsigned long irq_flags;
270	struct radeon_fence *fence;	269	struct radeon_fence *fence;
271	int r;	270	int r;
272		271
273	if (rdev->gpu_lockup) {	272	if (rdev->gpu_lockup) {
274	return 0;	273	return 0;
275	}	274	}
276	write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);	275	write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
277	if (list_empty(&rdev->fence_drv.emited)) {	276	if (list_empty(&rdev->fence_drv.emited)) {
278	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);	277	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
279	return 0;	278	return 0;
280	}	279	}
281	fence = list_entry(rdev->fence_drv.emited.prev,	280	fence = list_entry(rdev->fence_drv.emited.prev,
282	struct radeon_fence, list);	281	struct radeon_fence, list);
283	radeon_fence_ref(fence);	282	radeon_fence_ref(fence);
284	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);	283	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
285	r = radeon_fence_wait(fence, false);	284	r = radeon_fence_wait(fence, false);
286	radeon_fence_unref(&fence);	285	radeon_fence_unref(&fence);
287	return r;	286	return r;
288	}	287	}
289		288
290	struct radeon_fence radeon_fence_ref(struct radeon_fence fence)	289	struct radeon_fence radeon_fence_ref(struct radeon_fence fence)
291	{	290	{
292	kref_get(&fence->kref);	291	kref_get(&fence->kref);
293	return fence;	292	return fence;
294	}	293	}
295		294
296	void radeon_fence_unref(struct radeon_fence **fence)	295	void radeon_fence_unref(struct radeon_fence **fence)
297	{	296	{
298	struct radeon_fence tmp = fence;	297	struct radeon_fence tmp = fence;
299		298
300	*fence = NULL;	299	*fence = NULL;
301	if (tmp) {	300	if (tmp) {
302	kref_put(&tmp->kref, &radeon_fence_destroy);	301	kref_put(&tmp->kref, &radeon_fence_destroy);
303	}	302	}
304	}	303	}
305		304
306	void radeon_fence_process(struct radeon_device *rdev)	305	void radeon_fence_process(struct radeon_device *rdev)
307	{	306	{
308	unsigned long irq_flags;	307	unsigned long irq_flags;
309	bool wake;	308	bool wake;
310		309
311	write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);	310	write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
312	wake = radeon_fence_poll_locked(rdev);	311	wake = radeon_fence_poll_locked(rdev);
313	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);	312	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
314	if (wake) {	313	if (wake) {
315	wake_up_all(&rdev->fence_drv.queue);	314	wake_up_all(&rdev->fence_drv.queue);
316	}	315	}
317	}	316	}
318		317
319	int radeon_fence_driver_init(struct radeon_device *rdev)	318	int radeon_fence_driver_init(struct radeon_device *rdev)
320	{	319	{
321	unsigned long irq_flags;	320	unsigned long irq_flags;
322	int r;	321	int r;
323		322
324	write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);	323	write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
325	r = radeon_scratch_get(rdev, &rdev->fence_drv.scratch_reg);	324	r = radeon_scratch_get(rdev, &rdev->fence_drv.scratch_reg);
326	if (r) {	325	if (r) {
327	DRM_ERROR("Fence failed to get a scratch register.");	326	dev_err(rdev->dev, "fence failed to get scratch register\n");
328	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);	327	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
329	return r;	328	return r;
330	}	329	}
331	WREG32(rdev->fence_drv.scratch_reg, 0);	330	WREG32(rdev->fence_drv.scratch_reg, 0);
332	atomic_set(&rdev->fence_drv.seq, 0);	331	atomic_set(&rdev->fence_drv.seq, 0);
333	INIT_LIST_HEAD(&rdev->fence_drv.created);	332	INIT_LIST_HEAD(&rdev->fence_drv.created);
334	INIT_LIST_HEAD(&rdev->fence_drv.emited);	333	INIT_LIST_HEAD(&rdev->fence_drv.emited);
335	INIT_LIST_HEAD(&rdev->fence_drv.signaled);	334	INIT_LIST_HEAD(&rdev->fence_drv.signaled);
336	rdev->fence_drv.count_timeout = 0;	335	rdev->fence_drv.count_timeout = 0;
337	init_waitqueue_head(&rdev->fence_drv.queue);	336	init_waitqueue_head(&rdev->fence_drv.queue);
-		337	rdev->fence_drv.initialized = true;
338	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);	338	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
339	if (radeon_debugfs_fence_init(rdev)) {	339	if (radeon_debugfs_fence_init(rdev)) {
340	DRM_ERROR("Failed to register debugfs file for fence !\n");	340	dev_err(rdev->dev, "fence debugfs file creation failed\n");
341	}	341	}
342	return 0;	342	return 0;
343	}	343	}
344		344
345	void radeon_fence_driver_fini(struct radeon_device *rdev)	345	void radeon_fence_driver_fini(struct radeon_device *rdev)
346	{	346	{
347	unsigned long irq_flags;	347	unsigned long irq_flags;
-		348
-		349	if (!rdev->fence_drv.initialized)
348		350	return;
349	wake_up_all(&rdev->fence_drv.queue);	351	wake_up_all(&rdev->fence_drv.queue);
350	write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);	352	write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
351	radeon_scratch_free(rdev, rdev->fence_drv.scratch_reg);	353	radeon_scratch_free(rdev, rdev->fence_drv.scratch_reg);
352	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);	354	write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
353	DRM_INFO("radeon: fence finalized\n");	355	rdev->fence_drv.initialized = false;
354	}	356	}
355		357
356		358
357	/*	359	/*
358	* Fence debugfs	360	* Fence debugfs
359	*/	361	*/
360	#if defined(CONFIG_DEBUG_FS)	362	#if defined(CONFIG_DEBUG_FS)
361	static int radeon_debugfs_fence_info(struct seq_file m, void data)	363	static int radeon_debugfs_fence_info(struct seq_file m, void data)
362	{	364	{
363	struct drm_info_node node = (struct drm_info_node )m->private;	365	struct drm_info_node node = (struct drm_info_node )m->private;
364	struct drm_device *dev = node->minor->dev;	366	struct drm_device *dev = node->minor->dev;
365	struct radeon_device *rdev = dev->dev_private;	367	struct radeon_device *rdev = dev->dev_private;
366	struct radeon_fence *fence;	368	struct radeon_fence *fence;
367		369
368	seq_printf(m, "Last signaled fence 0x%08X\n",	370	seq_printf(m, "Last signaled fence 0x%08X\n",
369	RREG32(rdev->fence_drv.scratch_reg));	371	RREG32(rdev->fence_drv.scratch_reg));
370	if (!list_empty(&rdev->fence_drv.emited)) {	372	if (!list_empty(&rdev->fence_drv.emited)) {
371	fence = list_entry(rdev->fence_drv.emited.prev,	373	fence = list_entry(rdev->fence_drv.emited.prev,
372	struct radeon_fence, list);	374	struct radeon_fence, list);
373	seq_printf(m, "Last emited fence %p with 0x%08X\n",	375	seq_printf(m, "Last emited fence %p with 0x%08X\n",
374	fence, fence->seq);	376	fence, fence->seq);
375	}	377	}
376	return 0;	378	return 0;
377	}	379	}
378		380
379	static struct drm_info_list radeon_debugfs_fence_list[] = {	381	static struct drm_info_list radeon_debugfs_fence_list[] = {
380	{"radeon_fence_info", &radeon_debugfs_fence_info, 0, NULL},	382	{"radeon_fence_info", &radeon_debugfs_fence_info, 0, NULL},
381	};	383	};
382	#endif	384	#endif
383		385
384	int radeon_debugfs_fence_init(struct radeon_device *rdev)	386	int radeon_debugfs_fence_init(struct radeon_device *rdev)
385	{	387	{
386	#if defined(CONFIG_DEBUG_FS)	388	#if defined(CONFIG_DEBUG_FS)
387	return radeon_debugfs_add_files(rdev, radeon_debugfs_fence_list, 1);	389	return radeon_debugfs_add_files(rdev, radeon_debugfs_fence_list, 1);
388	#else	390	#else
389	return 0;	391	return 0;
390	#endif	392	#endif
391	}	393	}

Subversion Repositories Kolibri OS

(root)/drivers/video/drm/radeon/radeon_fence.c – Rev 1321 → 1404