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