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drm/nouveau: allow irq handlers to be installed by engine-specific code

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Lets start to clean up this mess!

Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2010-11-03 09:57:28 +10:00
parent a169f09b96
commit 8f8a54482b
2 changed files with 37 additions and 1 deletions
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4
drivers/gpu/drm/nouveau/nouveau_drv.h
View file

@ -614,6 +614,7 @@ struct drm_nouveau_private {
struct nouveau_bo *vga_ram;
/* interrupt handling */
void (*irq_handler[32])(struct drm_device *);
bool msi_enabled;
struct workqueue_struct *wq;
struct work_struct irq_work;
@ -900,6 +901,9 @@ extern int nouveau_ioctl_gpuobj_free(struct drm_device *, void *data,
extern int nouveau_irq_init(struct drm_device *);
extern void nouveau_irq_fini(struct drm_device *);
extern irqreturn_t nouveau_irq_handler(DRM_IRQ_ARGS);
extern void nouveau_irq_register(struct drm_device *, int status_bit,
void (*)(struct drm_device *));
extern void nouveau_irq_unregister(struct drm_device *, int status_bit);
extern void nouveau_irq_preinstall(struct drm_device *);
extern int nouveau_irq_postinstall(struct drm_device *);
extern void nouveau_irq_uninstall(struct drm_device *);

34
drivers/gpu/drm/nouveau/nouveau_irq.c
View file

@ -1216,8 +1216,9 @@ nouveau_irq_handler(DRM_IRQ_ARGS)
{
struct drm_device *dev = (struct drm_device *)arg;
struct drm_nouveau_private *dev_priv = dev->dev_private;
uint32_t status;
unsigned long flags;
u32 status;
int i;
status = nv_rd32(dev, NV03_PMC_INTR_0);
if (!status)
@ -1267,6 +1268,14 @@ nouveau_irq_handler(DRM_IRQ_ARGS)
NV_PMC_INTR_0_NV50_I2C_PENDING);
}
for (i = 0; i < 32 && status; i++) {
if (!(status & (1 << i)) || !dev_priv->irq_handler[i])
continue;
dev_priv->irq_handler[i](dev);
status &= ~(1 << i);
}
if (status)
NV_ERROR(dev, "Unhandled PMC INTR status bits 0x%08x\n", status);
@ -1304,3 +1313,26 @@ nouveau_irq_fini(struct drm_device *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);
}