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771fe6b9 JG |
1 | /* |
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" | |
771fe6b9 JG |
31 | #include "radeon.h" |
32 | #include "atom.h" | |
33 | ||
771fe6b9 JG |
34 | irqreturn_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 | ||
d4877cf2 AD |
42 | /* |
43 | * Handle hotplug events outside the interrupt handler proper. | |
44 | */ | |
45 | static 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 | ||
771fe6b9 JG |
61 | void radeon_driver_irq_preinstall_kms(struct drm_device *dev) |
62 | { | |
63 | struct radeon_device *rdev = dev->dev_private; | |
64 | unsigned i; | |
65 | ||
d4877cf2 AD |
66 | INIT_WORK(&rdev->hotplug_work, radeon_hotplug_work_func); |
67 | ||
771fe6b9 JG |
68 | /* Disable *all* interrupts */ |
69 | rdev->irq.sw_int = false; | |
70 | for (i = 0; i < 2; i++) { | |
71 | rdev->irq.crtc_vblank_int[i] = false; | |
72 | } | |
73 | radeon_irq_set(rdev); | |
74 | /* Clear bits */ | |
75 | radeon_irq_process(rdev); | |
76 | } | |
77 | ||
78 | int radeon_driver_irq_postinstall_kms(struct drm_device *dev) | |
79 | { | |
80 | struct radeon_device *rdev = dev->dev_private; | |
81 | ||
82 | dev->max_vblank_count = 0x001fffff; | |
83 | rdev->irq.sw_int = true; | |
84 | radeon_irq_set(rdev); | |
85 | return 0; | |
86 | } | |
87 | ||
88 | void radeon_driver_irq_uninstall_kms(struct drm_device *dev) | |
89 | { | |
90 | struct radeon_device *rdev = dev->dev_private; | |
91 | unsigned i; | |
92 | ||
93 | if (rdev == NULL) { | |
94 | return; | |
95 | } | |
96 | /* Disable *all* interrupts */ | |
97 | rdev->irq.sw_int = false; | |
98 | for (i = 0; i < 2; i++) { | |
99 | rdev->irq.crtc_vblank_int[i] = false; | |
003e69f9 | 100 | rdev->irq.hpd[i] = false; |
771fe6b9 JG |
101 | } |
102 | radeon_irq_set(rdev); | |
103 | } | |
104 | ||
105 | int radeon_irq_kms_init(struct radeon_device *rdev) | |
106 | { | |
107 | int r = 0; | |
dfee5614 | 108 | int num_crtc = 2; |
771fe6b9 | 109 | |
dfee5614 DA |
110 | if (rdev->flags & RADEON_SINGLE_CRTC) |
111 | num_crtc = 1; | |
1614f8b1 | 112 | spin_lock_init(&rdev->irq.sw_lock); |
dfee5614 | 113 | r = drm_vblank_init(rdev->ddev, num_crtc); |
771fe6b9 JG |
114 | if (r) { |
115 | return r; | |
116 | } | |
3e5cb98d AD |
117 | /* enable msi */ |
118 | rdev->msi_enabled = 0; | |
d8f60cfc AD |
119 | /* MSIs don't seem to work on my rs780; |
120 | * not sure about rs880 or other rs780s. | |
121 | * Needs more investigation. | |
122 | */ | |
123 | if ((rdev->family >= CHIP_RV380) && | |
124 | (rdev->family != CHIP_RS780) && | |
125 | (rdev->family != CHIP_RS880)) { | |
3e5cb98d | 126 | int ret = pci_enable_msi(rdev->pdev); |
d8f60cfc | 127 | if (!ret) { |
3e5cb98d | 128 | rdev->msi_enabled = 1; |
d8f60cfc AD |
129 | DRM_INFO("radeon: using MSI.\n"); |
130 | } | |
3e5cb98d | 131 | } |
771fe6b9 | 132 | rdev->irq.installed = true; |
003e69f9 JG |
133 | r = drm_irq_install(rdev->ddev); |
134 | if (r) { | |
135 | rdev->irq.installed = false; | |
136 | return r; | |
137 | } | |
771fe6b9 JG |
138 | DRM_INFO("radeon: irq initialized.\n"); |
139 | return 0; | |
140 | } | |
141 | ||
142 | void radeon_irq_kms_fini(struct radeon_device *rdev) | |
143 | { | |
003e69f9 | 144 | drm_vblank_cleanup(rdev->ddev); |
771fe6b9 | 145 | if (rdev->irq.installed) { |
771fe6b9 | 146 | drm_irq_uninstall(rdev->ddev); |
003e69f9 | 147 | rdev->irq.installed = false; |
3e5cb98d AD |
148 | if (rdev->msi_enabled) |
149 | pci_disable_msi(rdev->pdev); | |
771fe6b9 JG |
150 | } |
151 | } | |
1614f8b1 DA |
152 | |
153 | void radeon_irq_kms_sw_irq_get(struct radeon_device *rdev) | |
154 | { | |
155 | unsigned long irqflags; | |
156 | ||
157 | spin_lock_irqsave(&rdev->irq.sw_lock, irqflags); | |
158 | if (rdev->ddev->irq_enabled && (++rdev->irq.sw_refcount == 1)) { | |
159 | rdev->irq.sw_int = true; | |
160 | radeon_irq_set(rdev); | |
161 | } | |
162 | spin_unlock_irqrestore(&rdev->irq.sw_lock, irqflags); | |
163 | } | |
164 | ||
165 | void radeon_irq_kms_sw_irq_put(struct radeon_device *rdev) | |
166 | { | |
167 | unsigned long irqflags; | |
168 | ||
169 | spin_lock_irqsave(&rdev->irq.sw_lock, irqflags); | |
170 | BUG_ON(rdev->ddev->irq_enabled && rdev->irq.sw_refcount <= 0); | |
171 | if (rdev->ddev->irq_enabled && (--rdev->irq.sw_refcount == 0)) { | |
172 | rdev->irq.sw_int = false; | |
173 | radeon_irq_set(rdev); | |
174 | } | |
175 | spin_unlock_irqrestore(&rdev->irq.sw_lock, irqflags); | |
176 | } | |
177 |