blob: 68519b406ca6681e1d0bb62b3bda227d0c5a31ae [file] [log] [blame]
Jerome Glisse771fe6b2009-06-05 14:42:42 +02001/*
2 * Copyright 2008 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
4 * Copyright 2009 Jerome Glisse.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Dave Airlie
25 * Alex Deucher
26 * Jerome Glisse
27 */
28#include "drmP.h"
29#include "radeon_drm.h"
30#include "radeon_reg.h"
Jerome Glisse771fe6b2009-06-05 14:42:42 +020031#include "radeon.h"
32#include "atom.h"
33
Jerome Glisse771fe6b2009-06-05 14:42:42 +020034irqreturn_t radeon_driver_irq_handler_kms(DRM_IRQ_ARGS)
35{
36 struct drm_device *dev = (struct drm_device *) arg;
37 struct radeon_device *rdev = dev->dev_private;
38
39 return radeon_irq_process(rdev);
40}
41
Alex Deucherd4877cf2009-12-04 16:56:37 -050042/*
43 * Handle hotplug events outside the interrupt handler proper.
44 */
45static void radeon_hotplug_work_func(struct work_struct *work)
46{
47 struct radeon_device *rdev = container_of(work, struct radeon_device,
48 hotplug_work);
49 struct drm_device *dev = rdev->ddev;
50 struct drm_mode_config *mode_config = &dev->mode_config;
51 struct drm_connector *connector;
52
53 if (mode_config->num_connector) {
54 list_for_each_entry(connector, &mode_config->connector_list, head)
55 radeon_connector_hotplug(connector);
56 }
57 /* Just fire off a uevent and let userspace tell us what to do */
58 drm_sysfs_hotplug_event(dev);
59}
60
Jerome Glisse771fe6b2009-06-05 14:42:42 +020061void radeon_driver_irq_preinstall_kms(struct drm_device *dev)
62{
63 struct radeon_device *rdev = dev->dev_private;
64 unsigned i;
65
Alex Deucherd4877cf2009-12-04 16:56:37 -050066 INIT_WORK(&rdev->hotplug_work, radeon_hotplug_work_func);
67
Jerome Glisse771fe6b2009-06-05 14:42:42 +020068 /* Disable *all* interrupts */
69 rdev->irq.sw_int = false;
Alex Deucher9e7b4142010-03-16 17:08:06 -040070 for (i = 0; i < rdev->num_crtc; i++)
Jerome Glisse771fe6b2009-06-05 14:42:42 +020071 rdev->irq.crtc_vblank_int[i] = false;
Alex Deucher9e7b4142010-03-16 17:08:06 -040072 for (i = 0; i < 6; i++)
73 rdev->irq.hpd[i] = false;
Jerome Glisse771fe6b2009-06-05 14:42:42 +020074 radeon_irq_set(rdev);
75 /* Clear bits */
76 radeon_irq_process(rdev);
77}
78
79int radeon_driver_irq_postinstall_kms(struct drm_device *dev)
80{
81 struct radeon_device *rdev = dev->dev_private;
82
83 dev->max_vblank_count = 0x001fffff;
84 rdev->irq.sw_int = true;
85 radeon_irq_set(rdev);
86 return 0;
87}
88
89void radeon_driver_irq_uninstall_kms(struct drm_device *dev)
90{
91 struct radeon_device *rdev = dev->dev_private;
92 unsigned i;
93
94 if (rdev == NULL) {
95 return;
96 }
97 /* Disable *all* interrupts */
98 rdev->irq.sw_int = false;
Alex Deucher9e7b4142010-03-16 17:08:06 -040099 for (i = 0; i < rdev->num_crtc; i++)
Jerome Glisse771fe6b2009-06-05 14:42:42 +0200100 rdev->irq.crtc_vblank_int[i] = false;
Alex Deucher9e7b4142010-03-16 17:08:06 -0400101 for (i = 0; i < 6; i++)
Jerome Glisse003e69f2010-01-07 15:39:14 +0100102 rdev->irq.hpd[i] = false;
Jerome Glisse771fe6b2009-06-05 14:42:42 +0200103 radeon_irq_set(rdev);
104}
105
106int radeon_irq_kms_init(struct radeon_device *rdev)
107{
108 int r = 0;
109
Dave Airlie1614f8b2009-12-01 16:04:56 +1000110 spin_lock_init(&rdev->irq.sw_lock);
Alex Deucher9e7b4142010-03-16 17:08:06 -0400111 r = drm_vblank_init(rdev->ddev, rdev->num_crtc);
Jerome Glisse771fe6b2009-06-05 14:42:42 +0200112 if (r) {
113 return r;
114 }
Alex Deucher3e5cb982009-10-16 12:21:24 -0400115 /* enable msi */
116 rdev->msi_enabled = 0;
Alex Deucherd8f60cf2009-12-01 13:43:46 -0500117 /* MSIs don't seem to work on my rs780;
118 * not sure about rs880 or other rs780s.
119 * Needs more investigation.
120 */
121 if ((rdev->family >= CHIP_RV380) &&
122 (rdev->family != CHIP_RS780) &&
123 (rdev->family != CHIP_RS880)) {
Alex Deucher3e5cb982009-10-16 12:21:24 -0400124 int ret = pci_enable_msi(rdev->pdev);
Alex Deucherd8f60cf2009-12-01 13:43:46 -0500125 if (!ret) {
Alex Deucher3e5cb982009-10-16 12:21:24 -0400126 rdev->msi_enabled = 1;
Alex Deucherd8f60cf2009-12-01 13:43:46 -0500127 DRM_INFO("radeon: using MSI.\n");
128 }
Alex Deucher3e5cb982009-10-16 12:21:24 -0400129 }
Jerome Glisse771fe6b2009-06-05 14:42:42 +0200130 rdev->irq.installed = true;
Jerome Glisse003e69f2010-01-07 15:39:14 +0100131 r = drm_irq_install(rdev->ddev);
132 if (r) {
133 rdev->irq.installed = false;
134 return r;
135 }
Jerome Glisse771fe6b2009-06-05 14:42:42 +0200136 DRM_INFO("radeon: irq initialized.\n");
137 return 0;
138}
139
140void radeon_irq_kms_fini(struct radeon_device *rdev)
141{
Jerome Glisse003e69f2010-01-07 15:39:14 +0100142 drm_vblank_cleanup(rdev->ddev);
Jerome Glisse771fe6b2009-06-05 14:42:42 +0200143 if (rdev->irq.installed) {
Jerome Glisse771fe6b2009-06-05 14:42:42 +0200144 drm_irq_uninstall(rdev->ddev);
Jerome Glisse003e69f2010-01-07 15:39:14 +0100145 rdev->irq.installed = false;
Alex Deucher3e5cb982009-10-16 12:21:24 -0400146 if (rdev->msi_enabled)
147 pci_disable_msi(rdev->pdev);
Jerome Glisse771fe6b2009-06-05 14:42:42 +0200148 }
149}
Dave Airlie1614f8b2009-12-01 16:04:56 +1000150
151void radeon_irq_kms_sw_irq_get(struct radeon_device *rdev)
152{
153 unsigned long irqflags;
154
155 spin_lock_irqsave(&rdev->irq.sw_lock, irqflags);
156 if (rdev->ddev->irq_enabled && (++rdev->irq.sw_refcount == 1)) {
157 rdev->irq.sw_int = true;
158 radeon_irq_set(rdev);
159 }
160 spin_unlock_irqrestore(&rdev->irq.sw_lock, irqflags);
161}
162
163void radeon_irq_kms_sw_irq_put(struct radeon_device *rdev)
164{
165 unsigned long irqflags;
166
167 spin_lock_irqsave(&rdev->irq.sw_lock, irqflags);
168 BUG_ON(rdev->ddev->irq_enabled && rdev->irq.sw_refcount <= 0);
169 if (rdev->ddev->irq_enabled && (--rdev->irq.sw_refcount == 0)) {
170 rdev->irq.sw_int = false;
171 radeon_irq_set(rdev);
172 }
173 spin_unlock_irqrestore(&rdev->irq.sw_lock, irqflags);
174}
175