1 files changed, 191 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/xtensa.c b/drivers/gpu/drm/nouveau/nvkm/engine/xtensa.c
new file mode 100644
index 000000000..f7d3ba0af
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/xtensa.c
@@ -0,0 +1,191 @@
+/*
+ * Copyright 2013 Ilia Mirkin
+ *
+ * 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.
+ */
+#include <engine/xtensa.h>
+
+#include <core/gpuobj.h>
+#include <engine/fifo.h>
+
+static int
+nvkm_xtensa_oclass_get(struct nvkm_oclass *oclass, int index)
+{
+	struct nvkm_xtensa *xtensa = nvkm_xtensa(oclass->engine);
+	int c = 0;
+
+	while (xtensa->func->sclass[c].oclass) {
+		if (c++ == index) {
+			oclass->base = xtensa->func->sclass[index];
+			return index;
+		}
+	}
+
+	return c;
+}
+
+static int
+nvkm_xtensa_cclass_bind(struct nvkm_object *object, struct nvkm_gpuobj *parent,
+			int align, struct nvkm_gpuobj **pgpuobj)
+{
+	return nvkm_gpuobj_new(object->engine->subdev.device, 0x10000, align,
+			       true, parent, pgpuobj);
+}
+
+static const struct nvkm_object_func
+nvkm_xtensa_cclass = {
+	.bind = nvkm_xtensa_cclass_bind,
+};
+
+static void
+nvkm_xtensa_intr(struct nvkm_engine *engine)
+{
+	struct nvkm_xtensa *xtensa = nvkm_xtensa(engine);
+	struct nvkm_subdev *subdev = &xtensa->engine.subdev;
+	struct nvkm_device *device = subdev->device;
+	const u32 base = xtensa->addr;
+	u32 unk104 = nvkm_rd32(device, base + 0xd04);
+	u32 intr = nvkm_rd32(device, base + 0xc20);
+	u32 chan = nvkm_rd32(device, base + 0xc28);
+	u32 unk10c = nvkm_rd32(device, base + 0xd0c);
+
+	if (intr & 0x10)
+		nvkm_warn(subdev, "Watchdog interrupt, engine hung.\n");
+	nvkm_wr32(device, base + 0xc20, intr);
+	intr = nvkm_rd32(device, base + 0xc20);
+	if (unk104 == 0x10001 && unk10c == 0x200 && chan && !intr) {
+		nvkm_debug(subdev, "Enabling FIFO_CTRL\n");
+		nvkm_mask(device, xtensa->addr + 0xd94, 0, xtensa->func->fifo_val);
+	}
+}
+
+static int
+nvkm_xtensa_fini(struct nvkm_engine *engine, bool suspend)
+{
+	struct nvkm_xtensa *xtensa = nvkm_xtensa(engine);
+	struct nvkm_device *device = xtensa->engine.subdev.device;
+	const u32 base = xtensa->addr;
+
+	nvkm_wr32(device, base + 0xd84, 0); /* INTR_EN */
+	nvkm_wr32(device, base + 0xd94, 0); /* FIFO_CTRL */
+
+	if (!suspend)
+		nvkm_memory_unref(&xtensa->gpu_fw);
+	return 0;
+}
+
+static int
+nvkm_xtensa_init(struct nvkm_engine *engine)
+{
+	struct nvkm_xtensa *xtensa = nvkm_xtensa(engine);
+	struct nvkm_subdev *subdev = &xtensa->engine.subdev;
+	struct nvkm_device *device = subdev->device;
+	const u32 base = xtensa->addr;
+	const struct firmware *fw;
+	char name[32];
+	int i, ret;
+	u64 addr, size;
+	u32 tmp;
+
+	if (!xtensa->gpu_fw) {
+		snprintf(name, sizeof(name), "nouveau/nv84_xuc%03x",
+			 xtensa->addr >> 12);
+
+		ret = request_firmware(&fw, name, device->dev);
+		if (ret) {
+			nvkm_warn(subdev, "unable to load firmware %s\n", name);
+			return ret;
+		}
+
+		if (fw->size > 0x40000) {
+			nvkm_warn(subdev, "firmware %s too large\n", name);
+			release_firmware(fw);
+			return -EINVAL;
+		}
+
+		ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST,
+				      0x40000, 0x1000, false,
+				      &xtensa->gpu_fw);
+		if (ret) {
+			release_firmware(fw);
+			return ret;
+		}
+
+		nvkm_kmap(xtensa->gpu_fw);
+		for (i = 0; i < fw->size / 4; i++)
+			nvkm_wo32(xtensa->gpu_fw, i * 4, *((u32 *)fw->data + i));
+		nvkm_done(xtensa->gpu_fw);
+		release_firmware(fw);
+	}
+
+	addr = nvkm_memory_addr(xtensa->gpu_fw);
+	size = nvkm_memory_size(xtensa->gpu_fw);
+
+	nvkm_wr32(device, base + 0xd10, 0x1fffffff); /* ?? */
+	nvkm_wr32(device, base + 0xd08, 0x0fffffff); /* ?? */
+
+	nvkm_wr32(device, base + 0xd28, xtensa->func->unkd28); /* ?? */
+	nvkm_wr32(device, base + 0xc20, 0x3f); /* INTR */
+	nvkm_wr32(device, base + 0xd84, 0x3f); /* INTR_EN */
+
+	nvkm_wr32(device, base + 0xcc0, addr >> 8); /* XT_REGION_BASE */
+	nvkm_wr32(device, base + 0xcc4, 0x1c); /* XT_REGION_SETUP */
+	nvkm_wr32(device, base + 0xcc8, size >> 8); /* XT_REGION_LIMIT */
+
+	tmp = nvkm_rd32(device, 0x0);
+	nvkm_wr32(device, base + 0xde0, tmp); /* SCRATCH_H2X */
+
+	nvkm_wr32(device, base + 0xce8, 0xf); /* XT_REGION_SETUP */
+
+	nvkm_wr32(device, base + 0xc20, 0x3f); /* INTR */
+	nvkm_wr32(device, base + 0xd84, 0x3f); /* INTR_EN */
+	return 0;
+}
+
+static void *
+nvkm_xtensa_dtor(struct nvkm_engine *engine)
+{
+	return nvkm_xtensa(engine);
+}
+
+static const struct nvkm_engine_func
+nvkm_xtensa = {
+	.dtor = nvkm_xtensa_dtor,
+	.init = nvkm_xtensa_init,
+	.fini = nvkm_xtensa_fini,
+	.intr = nvkm_xtensa_intr,
+	.fifo.sclass = nvkm_xtensa_oclass_get,
+	.cclass = &nvkm_xtensa_cclass,
+};
+
+int
+nvkm_xtensa_new_(const struct nvkm_xtensa_func *func, struct nvkm_device *device,
+		 enum nvkm_subdev_type type, int inst, bool enable, u32 addr,
+		 struct nvkm_engine **pengine)
+{
+	struct nvkm_xtensa *xtensa;
+
+	if (!(xtensa = kzalloc(sizeof(*xtensa), GFP_KERNEL)))
+		return -ENOMEM;
+	xtensa->func = func;
+	xtensa->addr = addr;
+	*pengine = &xtensa->engine;
+
+	return nvkm_engine_ctor(&nvkm_xtensa, device, type, inst, enable, &xtensa->engine);
+}