1/* $NetBSD: nouveau_nvkm_subdev_bios_pcir.c,v 1.3 2021/12/18 23:45:38 riastradh Exp $ */ 2 3/* 4 * Copyright 2014 Red Hat Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: Ben Skeggs <bskeggs@redhat.com> 25 */ 26#include <sys/cdefs.h> 27__KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_bios_pcir.c,v 1.3 2021/12/18 23:45:38 riastradh Exp $"); 28 29#include <subdev/bios.h> 30#include <subdev/bios/pcir.h> 31 32u32 33nvbios_pcirTe(struct nvkm_bios *bios, u32 base, u8 *ver, u16 *hdr) 34{ 35 u32 data = nvbios_rd16(bios, base + 0x18); 36 if (data) { 37 data += base; 38 switch (nvbios_rd32(bios, data + 0x00)) { 39 case 0x52494350: /* PCIR */ 40 case 0x53494752: /* RGIS */ 41 case 0x5344504e: /* NPDS */ 42 *hdr = nvbios_rd16(bios, data + 0x0a); 43 *ver = nvbios_rd08(bios, data + 0x0c); 44 break; 45 default: 46 nvkm_debug(&bios->subdev, 47 "%08x: PCIR signature (%08x) unknown\n", 48 data, nvbios_rd32(bios, data + 0x00)); 49 data = 0; 50 break; 51 } 52 } 53 return data; 54} 55 56u32 57nvbios_pcirTp(struct nvkm_bios *bios, u32 base, u8 *ver, u16 *hdr, 58 struct nvbios_pcirT *info) 59{ 60 u32 data = nvbios_pcirTe(bios, base, ver, hdr); 61 memset(info, 0x00, sizeof(*info)); 62 if (data) { 63 info->vendor_id = nvbios_rd16(bios, data + 0x04); 64 info->device_id = nvbios_rd16(bios, data + 0x06); 65 info->class_code[0] = nvbios_rd08(bios, data + 0x0d); 66 info->class_code[1] = nvbios_rd08(bios, data + 0x0e); 67 info->class_code[2] = nvbios_rd08(bios, data + 0x0f); 68 info->image_size = nvbios_rd16(bios, data + 0x10) * 512; 69 info->image_rev = nvbios_rd16(bios, data + 0x12); 70 info->image_type = nvbios_rd08(bios, data + 0x14); 71 info->last = nvbios_rd08(bios, data + 0x15) & 0x80; 72 } 73 return data; 74} 75