/* * 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; }