kolibrios/drivers/video/drm/radeon/radeon_irq_kms.c

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/*
* Copyright 2008 Advanced Micro Devices, Inc.
* Copyright 2008 Red Hat Inc.
* Copyright 2009 Jerome Glisse.
*
* 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, sublicense,
* 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 above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
*
* Authors: Dave Airlie
* Alex Deucher
* Jerome Glisse
*/
#include "drmP.h"
#include "drm_crtc_helper.h"
#include "radeon_drm.h"
#include "radeon_reg.h"
#include "radeon.h"
#include "atom.h"
struct radeon_device *main_device;
extern int irq_override;
void irq_handler_kms()
{
// dbgprintf("%s\n",__FUNCTION__);
radeon_irq_process(main_device);
}
static void radeon_irq_preinstall(struct radeon_device *rdev)
{
unsigned i;
/* Disable *all* interrupts */
rdev->irq.sw_int = false;
rdev->irq.gui_idle = false;
for (i = 0; i < rdev->num_crtc; i++)
rdev->irq.crtc_vblank_int[i] = false;
for (i = 0; i < 6; i++) {
rdev->irq.hpd[i] = false;
rdev->irq.pflip[i] = false;
}
radeon_irq_set(rdev);
/* Clear bits */
radeon_irq_process(rdev);
}
int radeon_driver_irq_postinstall(struct radeon_device *rdev)
{
// struct radeon_device *rdev = dev->dev_private;
// dev->max_vblank_count = 0x001fffff;
rdev->irq.sw_int = true;
radeon_irq_set(rdev);
return 0;
}
int radeon_irq_kms_init(struct radeon_device *rdev)
{
int i;
int irq_line;
int r = 0;
ENTER();
// INIT_WORK(&rdev->hotplug_work, radeon_hotplug_work_func);
spin_lock_init(&rdev->irq.sw_lock);
for (i = 0; i < rdev->num_crtc; i++)
spin_lock_init(&rdev->irq.pflip_lock[i]);
// r = drm_vblank_init(rdev->ddev, rdev->num_crtc);
// if (r) {
// return r;
// }
rdev->msi_enabled = 0;
rdev->irq.installed = true;
main_device = rdev;
radeon_irq_preinstall(rdev);
if (irq_override)
irq_line = irq_override;
else
irq_line = rdev->pdev->irq;
dbgprintf("%s install irq %d\n", __FUNCTION__, irq_line);
AttachIntHandler(irq_line, irq_handler_kms, 2);
// r = drm_irq_install(rdev->ddev);
r = radeon_driver_irq_postinstall(rdev);
if (r) {
rdev->irq.installed = false;
LEAVE();
return r;
}
DRM_INFO("radeon: irq initialized.\n");
return 0;
}
void radeon_irq_kms_sw_irq_get(struct radeon_device *rdev)
{
unsigned long irqflags;
spin_lock_irqsave(&rdev->irq.sw_lock, irqflags);
if (rdev->ddev->irq_enabled && (++rdev->irq.sw_refcount == 1)) {
rdev->irq.sw_int = true;
radeon_irq_set(rdev);
}
spin_unlock_irqrestore(&rdev->irq.sw_lock, irqflags);
}
void radeon_irq_kms_sw_irq_put(struct radeon_device *rdev)
{
unsigned long irqflags;
spin_lock_irqsave(&rdev->irq.sw_lock, irqflags);
BUG_ON(rdev->ddev->irq_enabled && rdev->irq.sw_refcount <= 0);
if (rdev->ddev->irq_enabled && (--rdev->irq.sw_refcount == 0)) {
rdev->irq.sw_int = false;
radeon_irq_set(rdev);
}
spin_unlock_irqrestore(&rdev->irq.sw_lock, irqflags);
}