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| author | Ben Skeggs <bskeggs@redhat.com> | 2010-11-03 09:57:28 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2010-12-03 15:11:29 +1000 |
| commit | 8f8a54482b008714ccfad15f4592b3802b80d479 (patch) | |
| tree | a9e1d6baf0b3d918c741d07550a85fbffc8bbdeb /drivers/gpu/drm | |
| parent | a169f09b96306cc353ffe0e1bc4bc0e1e9492281 (diff) | |
| download | linux-8f8a54482b008714ccfad15f4592b3802b80d479.tar.gz linux-8f8a54482b008714ccfad15f4592b3802b80d479.tar.bz2 linux-8f8a54482b008714ccfad15f4592b3802b80d479.zip | |
drm/nouveau: allow irq handlers to be installed by engine-specific code
Lets start to clean up this mess!
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_drv.h | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_irq.c | 34 |
2 files changed, 37 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h index a94430b94a20..52dc97d87ebd 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drv.h +++ b/drivers/gpu/drm/nouveau/nouveau_drv.h @@ -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 *); diff --git a/drivers/gpu/drm/nouveau/nouveau_irq.c b/drivers/gpu/drm/nouveau/nouveau_irq.c index f3ae74ef3318..819bc3dd89e0 100644 --- a/drivers/gpu/drm/nouveau/nouveau_irq.c +++ b/drivers/gpu/drm/nouveau/nouveau_irq.c @@ -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); +} |