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i915_irq.c (152909) i915_irq.c (157617)
1/* i915_irq.c -- IRQ support for the I915 -*- linux-c -*-
2 */
3/*-
4 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
5 * All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the

--- 13 unchanged lines hidden (view full) ---

22 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 */
28
29#include <sys/cdefs.h>
1/* i915_irq.c -- IRQ support for the I915 -*- linux-c -*-
2 */
3/*-
4 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
5 * All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the

--- 13 unchanged lines hidden (view full) ---

22 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD: head/sys/dev/drm/i915_irq.c 152909 2005-11-28 23:13:57Z anholt $");
30__FBSDID("$FreeBSD: head/sys/dev/drm/i915_irq.c 157617 2006-04-09 20:45:45Z anholt $");
31
32#include "dev/drm/drmP.h"
33#include "dev/drm/drm.h"
34#include "dev/drm/i915_drm.h"
35#include "dev/drm/i915_drv.h"
36
31
32#include "dev/drm/drmP.h"
33#include "dev/drm/drm.h"
34#include "dev/drm/i915_drm.h"
35#include "dev/drm/i915_drv.h"
36
37#define USER_INT_FLAG 0x2
37#define USER_INT_FLAG (1<<1)
38#define VSYNC_PIPEB_FLAG (1<<5)
39#define VSYNC_PIPEA_FLAG (1<<7)
40
38#define MAX_NOPID ((u32)~0)
41#define MAX_NOPID ((u32)~0)
39#define READ_BREADCRUMB(dev_priv) (((u32*)(dev_priv->hw_status_page))[5])
40
41irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
42{
43 drm_device_t *dev = (drm_device_t *) arg;
44 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
45 u16 temp;
46
47 temp = I915_READ16(I915REG_INT_IDENTITY_R);
42
43irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
44{
45 drm_device_t *dev = (drm_device_t *) arg;
46 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
47 u16 temp;
48
49 temp = I915_READ16(I915REG_INT_IDENTITY_R);
48 temp &= USER_INT_FLAG;
49
50
51 temp &= (USER_INT_FLAG | VSYNC_PIPEA_FLAG);
52
50 DRM_DEBUG("%s flag=%08x\n", __FUNCTION__, temp);
51
52 if (temp == 0)
53 return IRQ_NONE;
54
55 I915_WRITE16(I915REG_INT_IDENTITY_R, temp);
53 DRM_DEBUG("%s flag=%08x\n", __FUNCTION__, temp);
54
55 if (temp == 0)
56 return IRQ_NONE;
57
58 I915_WRITE16(I915REG_INT_IDENTITY_R, temp);
56 DRM_WAKEUP(&dev_priv->irq_queue);
57
59
60 dev_priv->sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
61
62 if (temp & USER_INT_FLAG)
63 DRM_WAKEUP(&dev_priv->irq_queue);
64
65 if (temp & VSYNC_PIPEA_FLAG) {
66 atomic_inc(&dev->vbl_received);
67 DRM_WAKEUP(&dev->vbl_queue);
68 drm_vbl_send_signals(dev);
69 }
70
58 return IRQ_HANDLED;
59}
60
61static int i915_emit_irq(drm_device_t * dev)
62{
63 drm_i915_private_t *dev_priv = dev->dev_private;
64 u32 ret;
65 RING_LOCALS;

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99 __FUNCTION__,
100 READ_BREADCRUMB(dev_priv), (int)dev_priv->counter);
101 }
102
103 dev_priv->sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
104 return ret;
105}
106
71 return IRQ_HANDLED;
72}
73
74static int i915_emit_irq(drm_device_t * dev)
75{
76 drm_i915_private_t *dev_priv = dev->dev_private;
77 u32 ret;
78 RING_LOCALS;

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112 __FUNCTION__,
113 READ_BREADCRUMB(dev_priv), (int)dev_priv->counter);
114 }
115
116 dev_priv->sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
117 return ret;
118}
119
120int i915_driver_vblank_wait(drm_device_t *dev, unsigned int *sequence)
121{
122 drm_i915_private_t *dev_priv = dev->dev_private;
123 unsigned int cur_vblank;
124 int ret = 0;
125
126 if (!dev_priv) {
127 DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
128 return DRM_ERR(EINVAL);
129 }
130
131 DRM_WAIT_ON(ret, dev->vbl_queue, 3 * DRM_HZ,
132 (((cur_vblank = atomic_read(&dev->vbl_received))
133 - *sequence) <= (1<<23)));
134
135 *sequence = cur_vblank;
136
137 return ret;
138}
139
107/* Needs the lock as it touches the ring.
108 */
109int i915_irq_emit(DRM_IOCTL_ARGS)
110{
111 DRM_DEVICE;
112 drm_i915_private_t *dev_priv = dev->dev_private;
113 drm_i915_irq_emit_t emit;
114 int result;

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162 I915_WRITE16(I915REG_INT_MASK_R, 0x0);
163 I915_WRITE16(I915REG_INT_ENABLE_R, 0x0);
164}
165
166void i915_driver_irq_postinstall(drm_device_t * dev)
167{
168 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
169
140/* Needs the lock as it touches the ring.
141 */
142int i915_irq_emit(DRM_IOCTL_ARGS)
143{
144 DRM_DEVICE;
145 drm_i915_private_t *dev_priv = dev->dev_private;
146 drm_i915_irq_emit_t emit;
147 int result;

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195 I915_WRITE16(I915REG_INT_MASK_R, 0x0);
196 I915_WRITE16(I915REG_INT_ENABLE_R, 0x0);
197}
198
199void i915_driver_irq_postinstall(drm_device_t * dev)
200{
201 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
202
170 I915_WRITE16(I915REG_INT_ENABLE_R, USER_INT_FLAG);
203 I915_WRITE16(I915REG_INT_ENABLE_R, USER_INT_FLAG | VSYNC_PIPEA_FLAG);
171 DRM_INIT_WAITQUEUE(&dev_priv->irq_queue);
172}
173
174void i915_driver_irq_uninstall(drm_device_t * dev)
175{
176 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
204 DRM_INIT_WAITQUEUE(&dev_priv->irq_queue);
205}
206
207void i915_driver_irq_uninstall(drm_device_t * dev)
208{
209 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
210 u16 temp;
177 if (!dev_priv)
178 return;
179
180 I915_WRITE16(I915REG_HWSTAM, 0xffff);
181 I915_WRITE16(I915REG_INT_MASK_R, 0xffff);
182 I915_WRITE16(I915REG_INT_ENABLE_R, 0x0);
211 if (!dev_priv)
212 return;
213
214 I915_WRITE16(I915REG_HWSTAM, 0xffff);
215 I915_WRITE16(I915REG_INT_MASK_R, 0xffff);
216 I915_WRITE16(I915REG_INT_ENABLE_R, 0x0);
217
218 temp = I915_READ16(I915REG_INT_IDENTITY_R);
219 I915_WRITE16(I915REG_INT_IDENTITY_R, temp);
183}
220}