1 /* 2 * Copyright 2021 Red Hat Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 */ 22 #include "priv.h" 23 24 int 25 ga100_flcn_fw_signature(struct nvkm_falcon_fw *fw, u32 *src_base_src) 26 { 27 struct nvkm_falcon *falcon = fw->falcon; 28 struct nvkm_device *device = falcon->owner->device; 29 u32 reg_fuse_version; 30 int idx; 31 32 FLCN_DBG(falcon, "brom: %08x %08x", fw->engine_id, fw->ucode_id); 33 FLCN_DBG(falcon, "fuse_version: %d", fw->fuse_ver); 34 35 if (fw->engine_id & 0x00000001) { 36 reg_fuse_version = nvkm_rd32(device, 0x824140 + (fw->ucode_id - 1) * 4); 37 } else 38 if (fw->engine_id & 0x00000004) { 39 reg_fuse_version = nvkm_rd32(device, 0x824100 + (fw->ucode_id - 1) * 4); 40 } else 41 if (fw->engine_id & 0x00000400) { 42 reg_fuse_version = nvkm_rd32(device, 0x8241c0 + (fw->ucode_id - 1) * 4); 43 } else { 44 WARN_ON(1); 45 return -ENOSYS; 46 } 47 48 FLCN_DBG(falcon, "reg_fuse_version: %08x", reg_fuse_version); 49 if (reg_fuse_version) { 50 reg_fuse_version = fls(reg_fuse_version); 51 FLCN_DBG(falcon, "reg_fuse_version: %d", reg_fuse_version); 52 53 if (WARN_ON(fw->fuse_ver < reg_fuse_version)) 54 return -EINVAL; 55 56 idx = fw->fuse_ver - reg_fuse_version; 57 } else { 58 idx = fw->sig_nr - 1; 59 } 60 61 return idx; 62 } 63