02a841d434
Future work will be headed in the way of separating the policy supplied by the nouveau drm module from the mechanisms provided by the driver core. There will be a couple of major classes (subdev, engine) of driver modules that have clearly defined tasks, and the further directory structure change is to reflect this. No code changes here whatsoever, aside from fixing up a couple of include file pathnames. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
147 lines
3.8 KiB
C
147 lines
3.8 KiB
C
/*
|
|
* Copyright (C) 2006 Ben Skeggs.
|
|
*
|
|
* All Rights Reserved.
|
|
*
|
|
* 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 (including the
|
|
* next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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:
|
|
* Ben Skeggs <darktama@iinet.net.au>
|
|
*/
|
|
|
|
#include "drmP.h"
|
|
#include "drm.h"
|
|
#include "nouveau_drm.h"
|
|
#include "nouveau_drv.h"
|
|
#include "nouveau_reg.h"
|
|
#include <core/ramht.h>
|
|
#include "nouveau_util.h"
|
|
|
|
void
|
|
nouveau_irq_preinstall(struct drm_device *dev)
|
|
{
|
|
/* Master disable */
|
|
nv_wr32(dev, NV03_PMC_INTR_EN_0, 0);
|
|
}
|
|
|
|
int
|
|
nouveau_irq_postinstall(struct drm_device *dev)
|
|
{
|
|
struct drm_nouveau_private *dev_priv = dev->dev_private;
|
|
|
|
/* Master enable */
|
|
nv_wr32(dev, NV03_PMC_INTR_EN_0, NV_PMC_INTR_EN_0_MASTER_ENABLE);
|
|
if (dev_priv->msi_enabled)
|
|
nv_wr08(dev, 0x00088068, 0xff);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
nouveau_irq_uninstall(struct drm_device *dev)
|
|
{
|
|
/* Master disable */
|
|
nv_wr32(dev, NV03_PMC_INTR_EN_0, 0);
|
|
}
|
|
|
|
irqreturn_t
|
|
nouveau_irq_handler(DRM_IRQ_ARGS)
|
|
{
|
|
struct drm_device *dev = (struct drm_device *)arg;
|
|
struct drm_nouveau_private *dev_priv = dev->dev_private;
|
|
unsigned long flags;
|
|
u32 stat;
|
|
int i;
|
|
|
|
stat = nv_rd32(dev, NV03_PMC_INTR_0);
|
|
if (stat == 0 || stat == ~0)
|
|
return IRQ_NONE;
|
|
|
|
spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
|
|
for (i = 0; i < 32 && stat; i++) {
|
|
if (!(stat & (1 << i)) || !dev_priv->irq_handler[i])
|
|
continue;
|
|
|
|
dev_priv->irq_handler[i](dev);
|
|
stat &= ~(1 << i);
|
|
}
|
|
|
|
if (dev_priv->msi_enabled)
|
|
nv_wr08(dev, 0x00088068, 0xff);
|
|
spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);
|
|
|
|
if (stat && nouveau_ratelimit())
|
|
NV_ERROR(dev, "PMC - unhandled INTR 0x%08x\n", stat);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
int
|
|
nouveau_irq_init(struct drm_device *dev)
|
|
{
|
|
struct drm_nouveau_private *dev_priv = dev->dev_private;
|
|
int ret;
|
|
|
|
if (nouveau_msi != 0 && dev_priv->card_type >= NV_50) {
|
|
ret = pci_enable_msi(dev->pdev);
|
|
if (ret == 0) {
|
|
NV_INFO(dev, "enabled MSI\n");
|
|
dev_priv->msi_enabled = true;
|
|
}
|
|
}
|
|
|
|
return drm_irq_install(dev);
|
|
}
|
|
|
|
void
|
|
nouveau_irq_fini(struct drm_device *dev)
|
|
{
|
|
struct drm_nouveau_private *dev_priv = dev->dev_private;
|
|
|
|
drm_irq_uninstall(dev);
|
|
if (dev_priv->msi_enabled)
|
|
pci_disable_msi(dev->pdev);
|
|
}
|
|
|
|
void
|
|
nouveau_irq_register(struct drm_device *dev, int status_bit,
|
|
void (*handler)(struct drm_device *))
|
|
{
|
|
struct drm_nouveau_private *dev_priv = dev->dev_private;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
|
|
dev_priv->irq_handler[status_bit] = handler;
|
|
spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);
|
|
}
|
|
|
|
void
|
|
nouveau_irq_unregister(struct drm_device *dev, int status_bit)
|
|
{
|
|
struct drm_nouveau_private *dev_priv = dev->dev_private;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
|
|
dev_priv->irq_handler[status_bit] = NULL;
|
|
spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);
|
|
}
|