1/* 2 * Copyright 2013 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 * Authors: Ben Skeggs 23 */ 24 25#include <subdev/bios.h> 26#include <subdev/bios/bit.h> 27#include <subdev/bios/M0209.h> 28 29u32 30nvbios_M0209Te(struct nouveau_bios *bios, 31 u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *snr, u8 *ssz) 32{ 33 struct bit_entry bit_M; 34 u32 data = 0x00000000; 35 36 if (!bit_entry(bios, 'M', &bit_M)) { 37 if (bit_M.version == 2 && bit_M.length > 0x0c) 38 data = nv_ro32(bios, bit_M.offset + 0x09); 39 if (data) { 40 *ver = nv_ro08(bios, data + 0x00); 41 switch (*ver) { 42 case 0x10: 43 *hdr = nv_ro08(bios, data + 0x01); 44 *len = nv_ro08(bios, data + 0x02); 45 *ssz = nv_ro08(bios, data + 0x03); 46 *snr = 1; 47 *cnt = nv_ro08(bios, data + 0x04); 48 return data; 49 default: 50 break; 51 } 52 } 53 } 54 55 return 0x00000000; 56} 57 58u32 59nvbios_M0209Ee(struct nouveau_bios *bios, int idx, 60 u8 *ver, u8 *hdr, u8 *cnt, u8 *len) 61{ 62 u8 snr, ssz; 63 u32 data = nvbios_M0209Te(bios, ver, hdr, cnt, len, &snr, &ssz); 64 if (data && idx < *cnt) { 65 data = data + *hdr + idx * (*len + (snr * ssz)); 66 *hdr = *len; 67 *cnt = snr; 68 *len = ssz; 69 return data; 70 } 71 return 0x00000000; 72} 73 74u32 75nvbios_M0209Ep(struct nouveau_bios *bios, int idx, 76 u8 *ver, u8 *hdr, u8 *cnt, u8 *len, 77 struct nvbios_M0209E *info) 78{ 79 u32 data = nvbios_M0209Ee(bios, idx, ver, hdr, cnt, len); 80 memset(info, 0x00, sizeof(*info)); 81 switch (!!data * *ver) { 82 case 0x10: 83 info->v00_40 = (nv_ro08(bios, data + 0x00) & 0x40) >> 6; 84 info->bits = nv_ro08(bios, data + 0x00) & 0x3f; 85 info->modulo = nv_ro08(bios, data + 0x01); 86 info->v02_40 = (nv_ro08(bios, data + 0x02) & 0x40) >> 6; 87 info->v02_07 = nv_ro08(bios, data + 0x02) & 0x07; 88 info->v03 = nv_ro08(bios, data + 0x03); 89 return data; 90 default: 91 break; 92 } 93 return 0x00000000; 94} 95 96u32 97nvbios_M0209Se(struct nouveau_bios *bios, int ent, int idx, u8 *ver, u8 *hdr) 98{ 99 100 u8 cnt, len; 101 u32 data = nvbios_M0209Ee(bios, ent, ver, hdr, &cnt, &len); 102 if (data && idx < cnt) { 103 data = data + *hdr + idx * len; 104 *hdr = len; 105 return data; 106 } 107 return 0x00000000; 108} 109 110u32 111nvbios_M0209Sp(struct nouveau_bios *bios, int ent, int idx, u8 *ver, u8 *hdr, 112 struct nvbios_M0209S *info) 113{ 114 struct nvbios_M0209E M0209E; 115 u8 cnt, len; 116 u32 data = nvbios_M0209Ep(bios, ent, ver, hdr, &cnt, &len, &M0209E); 117 if (data) { 118 u32 i, data = nvbios_M0209Se(bios, ent, idx, ver, hdr); 119 memset(info, 0x00, sizeof(*info)); 120 switch (!!data * *ver) { 121 case 0x10: 122 for (i = 0; i < ARRAY_SIZE(info->data); i++) { 123 u32 bits = (i % M0209E.modulo) * M0209E.bits; 124 u32 mask = (1ULL << M0209E.bits) - 1; 125 u16 off = bits / 8; 126 u8 mod = bits % 8; 127 info->data[i] = nv_ro32(bios, data + off); 128 info->data[i] = info->data[i] >> mod; 129 info->data[i] = info->data[i] & mask; 130 } 131 return data; 132 default: 133 break; 134 } 135 } 136 return 0x00000000; 137} 138