1/* $NetBSD: nouveau_nvkm_subdev_bios_M0209.c,v 1.3 2021/12/18 23:45:38 riastradh Exp $ */ 2 3/* 4 * Copyright 2013 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 25 */ 26#include <sys/cdefs.h> 27__KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_bios_M0209.c,v 1.3 2021/12/18 23:45:38 riastradh Exp $"); 28 29#include <subdev/bios.h> 30#include <subdev/bios/bit.h> 31#include <subdev/bios/M0209.h> 32 33u32 34nvbios_M0209Te(struct nvkm_bios *bios, 35 u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *snr, u8 *ssz) 36{ 37 struct bit_entry bit_M; 38 u32 data = 0x00000000; 39 40 if (!bit_entry(bios, 'M', &bit_M)) { 41 if (bit_M.version == 2 && bit_M.length > 0x0c) 42 data = nvbios_rd32(bios, bit_M.offset + 0x09); 43 if (data) { 44 *ver = nvbios_rd08(bios, data + 0x00); 45 switch (*ver) { 46 case 0x10: 47 *hdr = nvbios_rd08(bios, data + 0x01); 48 *len = nvbios_rd08(bios, data + 0x02); 49 *ssz = nvbios_rd08(bios, data + 0x03); 50 *snr = 1; 51 *cnt = nvbios_rd08(bios, data + 0x04); 52 return data; 53 default: 54 break; 55 } 56 } 57 } 58 59 return 0x00000000; 60} 61 62u32 63nvbios_M0209Ee(struct nvkm_bios *bios, int idx, 64 u8 *ver, u8 *hdr, u8 *cnt, u8 *len) 65{ 66 u8 snr, ssz; 67 u32 data = nvbios_M0209Te(bios, ver, hdr, cnt, len, &snr, &ssz); 68 if (data && idx < *cnt) { 69 data = data + *hdr + idx * (*len + (snr * ssz)); 70 *hdr = *len; 71 *cnt = snr; 72 *len = ssz; 73 return data; 74 } 75 return 0x00000000; 76} 77 78u32 79nvbios_M0209Ep(struct nvkm_bios *bios, int idx, 80 u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_M0209E *info) 81{ 82 u32 data = nvbios_M0209Ee(bios, idx, ver, hdr, cnt, len); 83 memset(info, 0x00, sizeof(*info)); 84 switch (!!data * *ver) { 85 case 0x10: 86 info->v00_40 = (nvbios_rd08(bios, data + 0x00) & 0x40) >> 6; 87 info->bits = nvbios_rd08(bios, data + 0x00) & 0x3f; 88 info->modulo = nvbios_rd08(bios, data + 0x01); 89 info->v02_40 = (nvbios_rd08(bios, data + 0x02) & 0x40) >> 6; 90 info->v02_07 = nvbios_rd08(bios, data + 0x02) & 0x07; 91 info->v03 = nvbios_rd08(bios, data + 0x03); 92 return data; 93 default: 94 break; 95 } 96 return 0x00000000; 97} 98 99u32 100nvbios_M0209Se(struct nvkm_bios *bios, int ent, int idx, u8 *ver, u8 *hdr) 101{ 102 103 u8 cnt, len; 104 u32 data = nvbios_M0209Ee(bios, ent, ver, hdr, &cnt, &len); 105 if (data && idx < cnt) { 106 data = data + *hdr + idx * len; 107 *hdr = len; 108 return data; 109 } 110 return 0x00000000; 111} 112 113u32 114nvbios_M0209Sp(struct nvkm_bios *bios, int ent, int idx, u8 *ver, u8 *hdr, 115 struct nvbios_M0209S *info) 116{ 117 struct nvbios_M0209E M0209E; 118 u8 cnt, len; 119 u32 data = nvbios_M0209Ep(bios, ent, ver, hdr, &cnt, &len, &M0209E); 120 if (data) { 121 u32 i, data = nvbios_M0209Se(bios, ent, idx, ver, hdr); 122 memset(info, 0x00, sizeof(*info)); 123 switch (!!data * *ver) { 124 case 0x10: 125 for (i = 0; i < ARRAY_SIZE(info->data); i++) { 126 u32 bits = (i % M0209E.modulo) * M0209E.bits; 127 u32 mask = (1ULL << M0209E.bits) - 1; 128 u16 off = bits / 8; 129 u8 mod = bits % 8; 130 info->data[i] = nvbios_rd32(bios, data + off); 131 info->data[i] = info->data[i] >> mod; 132 info->data[i] = info->data[i] & mask; 133 } 134 return data; 135 default: 136 break; 137 } 138 } 139 return 0x00000000; 140} 141