Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 85 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/privring/gk20a.c b/drivers/gpu/drm/nouveau/nvkm/subdev/privring/gk20a.c
new file mode 100644
index 000000000..55e4a60d8
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/privring/gk20a.c
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
+ *
+ * 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 AUTHORS OR COPYRIGHT HOLDERS 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 <subdev/privring.h>
+#include <subdev/timer.h>
+
+static void
+gk20a_privring_init_privring_ring(struct nvkm_subdev *privring)
+{
+	struct nvkm_device *device = privring->device;
+	nvkm_mask(device, 0x137250, 0x3f, 0);
+
+	nvkm_mask(device, 0x000200, 0x20, 0);
+	udelay(20);
+	nvkm_mask(device, 0x000200, 0x20, 0x20);
+
+	nvkm_wr32(device, 0x12004c, 0x4);
+	nvkm_wr32(device, 0x122204, 0x2);
+	nvkm_rd32(device, 0x122204);
+
+	/*
+	 * Bug: increase clock timeout to avoid operation failure at high
+	 * gpcclk rate.
+	 */
+	nvkm_wr32(device, 0x122354, 0x800);
+	nvkm_wr32(device, 0x128328, 0x800);
+	nvkm_wr32(device, 0x124320, 0x800);
+}
+
+static void
+gk20a_privring_intr(struct nvkm_subdev *privring)
+{
+	struct nvkm_device *device = privring->device;
+	u32 status0 = nvkm_rd32(device, 0x120058);
+
+	if (status0 & 0x7) {
+		nvkm_debug(privring, "resetting privring ring\n");
+		gk20a_privring_init_privring_ring(privring);
+	}
+
+	/* Acknowledge interrupt */
+	nvkm_mask(device, 0x12004c, 0x2, 0x2);
+	nvkm_msec(device, 2000,
+		if (!(nvkm_rd32(device, 0x12004c) & 0x0000003f))
+			break;
+	);
+}
+
+static int
+gk20a_privring_init(struct nvkm_subdev *privring)
+{
+	gk20a_privring_init_privring_ring(privring);
+	return 0;
+}
+
+static const struct nvkm_subdev_func
+gk20a_privring = {
+	.init = gk20a_privring_init,
+	.intr = gk20a_privring_intr,
+};
+
+int
+gk20a_privring_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
+		   struct nvkm_subdev **pprivring)
+{
+	return nvkm_subdev_new_(&gk20a_privring, device, type, inst, pprivring);
+}