2 * Copyright 2008 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
4 * Copyright 2009 Jerome Glisse.
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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.
24 * Authors: Dave Airlie
29 #include "drm_crtc_helper.h"
30 #include "radeon_drm.h"
31 #include "radeon_reg.h"
35 irqreturn_t
radeon_driver_irq_handler_kms(DRM_IRQ_ARGS
)
37 struct drm_device
*dev
= (struct drm_device
*) arg
;
38 struct radeon_device
*rdev
= dev
->dev_private
;
40 return radeon_irq_process(rdev
);
44 * Handle hotplug events outside the interrupt handler proper.
46 static void radeon_hotplug_work_func(struct work_struct
*work
)
48 struct radeon_device
*rdev
= container_of(work
, struct radeon_device
,
50 struct drm_device
*dev
= rdev
->ddev
;
51 struct drm_mode_config
*mode_config
= &dev
->mode_config
;
52 struct drm_connector
*connector
;
54 if (mode_config
->num_connector
) {
55 list_for_each_entry(connector
, &mode_config
->connector_list
, head
)
56 radeon_connector_hotplug(connector
);
58 /* Just fire off a uevent and let userspace tell us what to do */
59 drm_helper_hpd_irq_event(dev
);
62 void radeon_driver_irq_preinstall_kms(struct drm_device
*dev
)
64 struct radeon_device
*rdev
= dev
->dev_private
;
67 /* Disable *all* interrupts */
68 rdev
->irq
.sw_int
= false;
69 rdev
->irq
.gui_idle
= false;
70 for (i
= 0; i
< RADEON_MAX_HPD_PINS
; i
++)
71 rdev
->irq
.hpd
[i
] = false;
72 for (i
= 0; i
< RADEON_MAX_CRTCS
; i
++) {
73 rdev
->irq
.crtc_vblank_int
[i
] = false;
74 rdev
->irq
.pflip
[i
] = false;
78 radeon_irq_process(rdev
);
81 int radeon_driver_irq_postinstall_kms(struct drm_device
*dev
)
83 struct radeon_device
*rdev
= dev
->dev_private
;
85 dev
->max_vblank_count
= 0x001fffff;
86 rdev
->irq
.sw_int
= true;
91 void radeon_driver_irq_uninstall_kms(struct drm_device
*dev
)
93 struct radeon_device
*rdev
= dev
->dev_private
;
99 /* Disable *all* interrupts */
100 rdev
->irq
.sw_int
= false;
101 rdev
->irq
.gui_idle
= false;
102 for (i
= 0; i
< RADEON_MAX_HPD_PINS
; i
++)
103 rdev
->irq
.hpd
[i
] = false;
104 for (i
= 0; i
< RADEON_MAX_CRTCS
; i
++) {
105 rdev
->irq
.crtc_vblank_int
[i
] = false;
106 rdev
->irq
.pflip
[i
] = false;
108 radeon_irq_set(rdev
);
111 static bool radeon_msi_ok(struct radeon_device
*rdev
)
113 /* RV370/RV380 was first asic with MSI support */
114 if (rdev
->family
< CHIP_RV380
)
117 /* MSIs don't work on AGP */
118 if (rdev
->flags
& RADEON_IS_AGP
)
121 if (rdev
->flags
& RADEON_IS_IGP
) {
122 /* APUs work fine with MSIs */
123 if (rdev
->family
>= CHIP_PALM
)
125 /* lots of IGPs have problems with MSIs */
132 int radeon_irq_kms_init(struct radeon_device
*rdev
)
137 INIT_WORK(&rdev
->hotplug_work
, radeon_hotplug_work_func
);
139 spin_lock_init(&rdev
->irq
.sw_lock
);
140 for (i
= 0; i
< rdev
->num_crtc
; i
++)
141 spin_lock_init(&rdev
->irq
.pflip_lock
[i
]);
142 r
= drm_vblank_init(rdev
->ddev
, rdev
->num_crtc
);
147 rdev
->msi_enabled
= 0;
149 if (radeon_msi_ok(rdev
)) {
150 int ret
= pci_enable_msi(rdev
->pdev
);
152 rdev
->msi_enabled
= 1;
153 dev_info(rdev
->dev
, "radeon: using MSI.\n");
156 rdev
->irq
.installed
= true;
157 r
= drm_irq_install(rdev
->ddev
);
159 rdev
->irq
.installed
= false;
162 DRM_INFO("radeon: irq initialized.\n");
166 void radeon_irq_kms_fini(struct radeon_device
*rdev
)
168 drm_vblank_cleanup(rdev
->ddev
);
169 if (rdev
->irq
.installed
) {
170 drm_irq_uninstall(rdev
->ddev
);
171 rdev
->irq
.installed
= false;
172 if (rdev
->msi_enabled
)
173 pci_disable_msi(rdev
->pdev
);
175 flush_work_sync(&rdev
->hotplug_work
);
178 void radeon_irq_kms_sw_irq_get(struct radeon_device
*rdev
)
180 unsigned long irqflags
;
182 spin_lock_irqsave(&rdev
->irq
.sw_lock
, irqflags
);
183 if (rdev
->ddev
->irq_enabled
&& (++rdev
->irq
.sw_refcount
== 1)) {
184 rdev
->irq
.sw_int
= true;
185 radeon_irq_set(rdev
);
187 spin_unlock_irqrestore(&rdev
->irq
.sw_lock
, irqflags
);
190 void radeon_irq_kms_sw_irq_put(struct radeon_device
*rdev
)
192 unsigned long irqflags
;
194 spin_lock_irqsave(&rdev
->irq
.sw_lock
, irqflags
);
195 BUG_ON(rdev
->ddev
->irq_enabled
&& rdev
->irq
.sw_refcount
<= 0);
196 if (rdev
->ddev
->irq_enabled
&& (--rdev
->irq
.sw_refcount
== 0)) {
197 rdev
->irq
.sw_int
= false;
198 radeon_irq_set(rdev
);
200 spin_unlock_irqrestore(&rdev
->irq
.sw_lock
, irqflags
);
203 void radeon_irq_kms_pflip_irq_get(struct radeon_device
*rdev
, int crtc
)
205 unsigned long irqflags
;
207 if (crtc
< 0 || crtc
>= rdev
->num_crtc
)
210 spin_lock_irqsave(&rdev
->irq
.pflip_lock
[crtc
], irqflags
);
211 if (rdev
->ddev
->irq_enabled
&& (++rdev
->irq
.pflip_refcount
[crtc
] == 1)) {
212 rdev
->irq
.pflip
[crtc
] = true;
213 radeon_irq_set(rdev
);
215 spin_unlock_irqrestore(&rdev
->irq
.pflip_lock
[crtc
], irqflags
);
218 void radeon_irq_kms_pflip_irq_put(struct radeon_device
*rdev
, int crtc
)
220 unsigned long irqflags
;
222 if (crtc
< 0 || crtc
>= rdev
->num_crtc
)
225 spin_lock_irqsave(&rdev
->irq
.pflip_lock
[crtc
], irqflags
);
226 BUG_ON(rdev
->ddev
->irq_enabled
&& rdev
->irq
.pflip_refcount
[crtc
] <= 0);
227 if (rdev
->ddev
->irq_enabled
&& (--rdev
->irq
.pflip_refcount
[crtc
] == 0)) {
228 rdev
->irq
.pflip
[crtc
] = false;
229 radeon_irq_set(rdev
);
231 spin_unlock_irqrestore(&rdev
->irq
.pflip_lock
[crtc
], irqflags
);
This page took 0.037245 seconds and 6 git commands to generate.