1 files changed, 105 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/mc/base.c b/drivers/gpu/drm/nouveau/core/subdev/mc/base.c
new file mode 100644
index 0000000..ec9cd6f
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/mc/base.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright 2012 Red Hat Inc.
+ *
+ * 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 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 HOLDER(S) OR AUTHOR(S) 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
+ */
+
+#include <subdev/mc.h>
+
+static irqreturn_t
+nouveau_mc_intr(int irq, void *arg)
+{
+	struct nouveau_mc *pmc = arg;
+	const struct nouveau_mc_intr *map = pmc->intr_map;
+	struct nouveau_subdev *unit;
+	u32 stat, intr;
+
+	intr = stat = nv_rd32(pmc, 0x000100);
+	while (stat && map->stat) {
+		if (stat & map->stat) {
+			unit = nouveau_subdev(pmc, map->unit);
+			if (unit && unit->intr)
+				unit->intr(unit);
+			intr &= ~map->stat;
+		}
+		map++;
+	}
+
+	if (intr) {
+		nv_error(pmc, "unknown intr 0x%08x\n", stat);
+	}
+
+	return stat ? IRQ_HANDLED : IRQ_NONE;
+}
+
+int
+_nouveau_mc_fini(struct nouveau_object *object, bool suspend)
+{
+	struct nouveau_mc *pmc = (void *)object;
+	nv_wr32(pmc, 0x000140, 0x00000000);
+	return nouveau_subdev_fini(&pmc->base, suspend);
+}
+
+int
+_nouveau_mc_init(struct nouveau_object *object)
+{
+	struct nouveau_mc *pmc = (void *)object;
+	int ret = nouveau_subdev_init(&pmc->base);
+	if (ret)
+		return ret;
+	nv_wr32(pmc, 0x000140, 0x00000001);
+	return 0;
+}
+
+void
+_nouveau_mc_dtor(struct nouveau_object *object)
+{
+	struct nouveau_device *device = nv_device(object);
+	struct nouveau_mc *pmc = (void *)object;
+	free_irq(device->pdev->irq, pmc);
+	nouveau_subdev_destroy(&pmc->base);
+}
+
+int
+nouveau_mc_create_(struct nouveau_object *parent, struct nouveau_object *engine,
+		   struct nouveau_oclass *oclass,
+		   const struct nouveau_mc_intr *intr_map,
+		   int length, void **pobject)
+{
+	struct nouveau_device *device = nv_device(parent);
+	struct nouveau_mc *pmc;
+	int ret;
+
+	ret = nouveau_subdev_create_(parent, engine, oclass, 0, "PMC",
+				     "master", length, pobject);
+	pmc = *pobject;
+	if (ret)
+		return ret;
+
+	pmc->intr_map = intr_map;
+
+	ret = request_irq(device->pdev->irq, nouveau_mc_intr,
+			  IRQF_SHARED, "nouveau", pmc);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}