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path: root/drivers/gpu/drm/nouveau/nvc0_fb.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nvc0_fb.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvc0_fb.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvc0_fb.c b/drivers/gpu/drm/nouveau/nvc0_fb.c
index 08e6b118f02..5bf55038fd9 100644
--- a/drivers/gpu/drm/nouveau/nvc0_fb.c
+++ b/drivers/gpu/drm/nouveau/nvc0_fb.c
@@ -32,6 +32,30 @@ struct nvc0_fb_priv {
dma_addr_t r100c10;
};
+static inline void
+nvc0_mfb_subp_isr(struct drm_device *dev, int unit, int subp)
+{
+ u32 subp_base = 0x141000 + (unit * 0x2000) + (subp * 0x400);
+ u32 stat = nv_rd32(dev, subp_base + 0x020);
+
+ if (stat) {
+ NV_INFO(dev, "PMFB%d_SUBP%d: 0x%08x\n", unit, subp, stat);
+ nv_wr32(dev, subp_base + 0x020, stat);
+ }
+}
+
+static void
+nvc0_mfb_isr(struct drm_device *dev)
+{
+ u32 units = nv_rd32(dev, 0x00017c);
+ while (units) {
+ u32 subp, unit = ffs(units) - 1;
+ for (subp = 0; subp < 2; subp++)
+ nvc0_mfb_subp_isr(dev, unit, subp);
+ units &= ~(1 << unit);
+ }
+}
+
static void
nvc0_fb_destroy(struct drm_device *dev)
{
@@ -39,6 +63,8 @@ nvc0_fb_destroy(struct drm_device *dev)
struct nouveau_fb_engine *pfb = &dev_priv->engine.fb;
struct nvc0_fb_priv *priv = pfb->priv;
+ nouveau_irq_unregister(dev, 25);
+
if (priv->r100c10_page) {
pci_unmap_page(dev->pdev, priv->r100c10, PAGE_SIZE,
PCI_DMA_BIDIRECTIONAL);
@@ -74,6 +100,7 @@ nvc0_fb_create(struct drm_device *dev)
return -EFAULT;
}
+ nouveau_irq_register(dev, 25, nvc0_mfb_isr);
return 0;
}