1 files changed, 98 insertions, 17 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mc/tu102.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mc/tu102.c
index d098c44a4fcb..58db83ebadc5 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mc/tu102.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mc/tu102.c
@@ -19,37 +19,118 @@
  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  * OTHER DEALINGS IN THE SOFTWARE.
  */
+#define tu102_mc(p) container_of((p), struct tu102_mc, base)
 #include "priv.h"
 
+struct tu102_mc {
+	struct nvkm_mc base;
+	spinlock_t lock;
+	bool intr;
+	u32 mask;
+};
+
 static void
-tu102_mc_intr_hack(struct nvkm_mc *mc, bool *handled)
+tu102_mc_intr_update(struct tu102_mc *mc)
 {
-	struct nvkm_device *device = mc->subdev.device;
-	u32 stat = nvkm_rd32(device, 0xb81010);
-	if (stat & 0x00000050) {
-		struct nvkm_subdev *subdev =
-			nvkm_device_subdev(device, NVKM_SUBDEV_FAULT);
-		nvkm_wr32(device, 0xb81010, stat & 0x00000050);
-		if (subdev)
-			nvkm_subdev_intr(subdev);
-		*handled = true;
+	struct nvkm_device *device = mc->base.subdev.device;
+	u32 mask = mc->intr ? mc->mask : 0, i;
+
+	for (i = 0; i < 2; i++) {
+		nvkm_wr32(device, 0x000180 + (i * 0x04), ~mask);
+		nvkm_wr32(device, 0x000160 + (i * 0x04),  mask);
 	}
+
+	if (mask & 0x00000200)
+		nvkm_wr32(device, 0xb81608, 0x6);
+	else
+		nvkm_wr32(device, 0xb81610, 0x6);
 }
 
+void
+tu102_mc_intr_unarm(struct nvkm_mc *base)
+{
+	struct tu102_mc *mc = tu102_mc(base);
+	unsigned long flags;
+
+	spin_lock_irqsave(&mc->lock, flags);
+	mc->intr = false;
+	tu102_mc_intr_update(mc);
+	spin_unlock_irqrestore(&mc->lock, flags);
+}
+
+void
+tu102_mc_intr_rearm(struct nvkm_mc *base)
+{
+	struct tu102_mc *mc = tu102_mc(base);
+	unsigned long flags;
+
+	spin_lock_irqsave(&mc->lock, flags);
+	mc->intr = true;
+	tu102_mc_intr_update(mc);
+	spin_unlock_irqrestore(&mc->lock, flags);
+}
+
+void
+tu102_mc_intr_mask(struct nvkm_mc *base, u32 mask, u32 intr)
+{
+	struct tu102_mc *mc = tu102_mc(base);
+	unsigned long flags;
+
+	spin_lock_irqsave(&mc->lock, flags);
+	mc->mask = (mc->mask & ~mask) | intr;
+	tu102_mc_intr_update(mc);
+	spin_unlock_irqrestore(&mc->lock, flags);
+}
+
+static u32
+tu102_mc_intr_stat(struct nvkm_mc *mc)
+{
+	struct nvkm_device *device = mc->subdev.device;
+	u32 intr0 = nvkm_rd32(device, 0x000100);
+	u32 intr1 = nvkm_rd32(device, 0x000104);
+	u32 intr_top = nvkm_rd32(device, 0xb81600);
+
+	/* Turing and above route the MMU fault interrupts via a different
+	 * interrupt tree with different control registers. For the moment remap
+	 * them back to the old PMC vector.
+	 */
+	if (intr_top & 0x00000006)
+		intr0 |= 0x00000200;
+
+	return intr0 | intr1;
+}
+
+
 static const struct nvkm_mc_func
 tu102_mc = {
 	.init = nv50_mc_init,
 	.intr = gp100_mc_intr,
-	.intr_unarm = gp100_mc_intr_unarm,
-	.intr_rearm = gp100_mc_intr_rearm,
-	.intr_mask = gp100_mc_intr_mask,
-	.intr_stat = gf100_mc_intr_stat,
-	.intr_hack = tu102_mc_intr_hack,
+	.intr_unarm = tu102_mc_intr_unarm,
+	.intr_rearm = tu102_mc_intr_rearm,
+	.intr_mask = tu102_mc_intr_mask,
+	.intr_stat = tu102_mc_intr_stat,
 	.reset = gk104_mc_reset,
 };
 
+static int
+tu102_mc_new_(const struct nvkm_mc_func *func, struct nvkm_device *device,
+	      enum nvkm_subdev_type type, int inst, struct nvkm_mc **pmc)
+{
+	struct tu102_mc *mc;
+
+	if (!(mc = kzalloc(sizeof(*mc), GFP_KERNEL)))
+		return -ENOMEM;
+	nvkm_mc_ctor(func, device, type, inst, &mc->base);
+	*pmc = &mc->base;
+
+	spin_lock_init(&mc->lock);
+	mc->intr = false;
+	mc->mask = 0x7fffffff;
+	return 0;
+}
+
 int
-tu102_mc_new(struct nvkm_device *device, int index, struct nvkm_mc **pmc)
+tu102_mc_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_mc **pmc)
 {
-	return gp100_mc_new_(&tu102_mc, device, index, pmc);
+	return tu102_mc_new_(&tu102_mc, device, type, inst, pmc);
 }