1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/falcon/ga100.c b/drivers/gpu/drm/nouveau/nvkm/falcon/ga100.c
new file mode 100644
index 000000000000..49fd32943916
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/falcon/ga100.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2021 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.
+ */
+#include "priv.h"
+
+int
+ga100_flcn_fw_signature(struct nvkm_falcon_fw *fw, u32 *src_base_src)
+{
+	struct nvkm_falcon *falcon = fw->falcon;
+	struct nvkm_device *device = falcon->owner->device;
+	u32 reg_fuse_version;
+	int idx;
+
+	FLCN_DBG(falcon, "brom: %08x %08x", fw->engine_id, fw->ucode_id);
+	FLCN_DBG(falcon, "fuse_version: %d", fw->fuse_ver);
+
+	if (fw->engine_id & 0x00000001) {
+		reg_fuse_version = nvkm_rd32(device, 0x824140 + (fw->ucode_id - 1) * 4);
+	} else
+	if (fw->engine_id & 0x00000004) {
+		reg_fuse_version = nvkm_rd32(device, 0x824100 + (fw->ucode_id - 1) * 4);
+	} else
+	if (fw->engine_id & 0x00000400) {
+		reg_fuse_version = nvkm_rd32(device, 0x8241c0 + (fw->ucode_id - 1) * 4);
+	} else {
+		WARN_ON(1);
+		return -ENOSYS;
+	}
+
+	FLCN_DBG(falcon, "reg_fuse_version: %08x", reg_fuse_version);
+	if (reg_fuse_version) {
+		reg_fuse_version = fls(reg_fuse_version);
+		FLCN_DBG(falcon, "reg_fuse_version: %d", reg_fuse_version);
+
+		if (WARN_ON(fw->fuse_ver < reg_fuse_version))
+			return -EINVAL;
+
+		idx = fw->fuse_ver - reg_fuse_version;
+	} else {
+		idx = fw->sig_nr - 1;
+	}
+
+	return idx;
+}