1c39f472eSBen Skeggs /* 2c39f472eSBen Skeggs * Copyright 2014 Red Hat Inc. 3c39f472eSBen Skeggs * 4c39f472eSBen Skeggs * Permission is hereby granted, free of charge, to any person obtaining a 5c39f472eSBen Skeggs * copy of this software and associated documentation files (the "Software"), 6c39f472eSBen Skeggs * to deal in the Software without restriction, including without limitation 7c39f472eSBen Skeggs * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8c39f472eSBen Skeggs * and/or sell copies of the Software, and to permit persons to whom the 9c39f472eSBen Skeggs * Software is furnished to do so, subject to the following conditions: 10c39f472eSBen Skeggs * 11c39f472eSBen Skeggs * The above copyright notice and this permission notice shall be included in 12c39f472eSBen Skeggs * all copies or substantial portions of the Software. 13c39f472eSBen Skeggs * 14c39f472eSBen Skeggs * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15c39f472eSBen Skeggs * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16c39f472eSBen Skeggs * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17c39f472eSBen Skeggs * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18c39f472eSBen Skeggs * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19c39f472eSBen Skeggs * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20c39f472eSBen Skeggs * OTHER DEALINGS IN THE SOFTWARE. 21c39f472eSBen Skeggs * 22c39f472eSBen Skeggs * Authors: Ben Skeggs 23c39f472eSBen Skeggs */ 24c39f472eSBen Skeggs 25c39f472eSBen Skeggs #include <subdev/bios.h> 26c39f472eSBen Skeggs #include <subdev/bios/bit.h> 27c39f472eSBen Skeggs #include <subdev/bios/M0203.h> 28c39f472eSBen Skeggs 29c39f472eSBen Skeggs u32 30c39f472eSBen Skeggs nvbios_M0203Te(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) 31c39f472eSBen Skeggs { 32c39f472eSBen Skeggs struct bit_entry bit_M; 33c39f472eSBen Skeggs u32 data = 0x00000000; 34c39f472eSBen Skeggs 35c39f472eSBen Skeggs if (!bit_entry(bios, 'M', &bit_M)) { 36c39f472eSBen Skeggs if (bit_M.version == 2 && bit_M.length > 0x04) 37c39f472eSBen Skeggs data = nv_ro16(bios, bit_M.offset + 0x03); 38c39f472eSBen Skeggs if (data) { 39c39f472eSBen Skeggs *ver = nv_ro08(bios, data + 0x00); 40c39f472eSBen Skeggs switch (*ver) { 41c39f472eSBen Skeggs case 0x10: 42c39f472eSBen Skeggs *hdr = nv_ro08(bios, data + 0x01); 43c39f472eSBen Skeggs *len = nv_ro08(bios, data + 0x02); 44c39f472eSBen Skeggs *cnt = nv_ro08(bios, data + 0x03); 45c39f472eSBen Skeggs return data; 46c39f472eSBen Skeggs default: 47c39f472eSBen Skeggs break; 48c39f472eSBen Skeggs } 49c39f472eSBen Skeggs } 50c39f472eSBen Skeggs } 51c39f472eSBen Skeggs 52c39f472eSBen Skeggs return 0x00000000; 53c39f472eSBen Skeggs } 54c39f472eSBen Skeggs 55c39f472eSBen Skeggs u32 56c39f472eSBen Skeggs nvbios_M0203Tp(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len, 57c39f472eSBen Skeggs struct nvbios_M0203T *info) 58c39f472eSBen Skeggs { 59c39f472eSBen Skeggs u32 data = nvbios_M0203Te(bios, ver, hdr, cnt, len); 60c39f472eSBen Skeggs memset(info, 0x00, sizeof(*info)); 61c39f472eSBen Skeggs switch (!!data * *ver) { 62c39f472eSBen Skeggs case 0x10: 63c39f472eSBen Skeggs info->type = nv_ro08(bios, data + 0x04); 64c39f472eSBen Skeggs info->pointer = nv_ro16(bios, data + 0x05); 65c39f472eSBen Skeggs break; 66c39f472eSBen Skeggs default: 67c39f472eSBen Skeggs break; 68c39f472eSBen Skeggs } 69c39f472eSBen Skeggs return data; 70c39f472eSBen Skeggs } 71c39f472eSBen Skeggs 72c39f472eSBen Skeggs u32 73c39f472eSBen Skeggs nvbios_M0203Ee(struct nouveau_bios *bios, int idx, u8 *ver, u8 *hdr) 74c39f472eSBen Skeggs { 75c39f472eSBen Skeggs u8 cnt, len; 76c39f472eSBen Skeggs u32 data = nvbios_M0203Te(bios, ver, hdr, &cnt, &len); 77c39f472eSBen Skeggs if (data && idx < cnt) { 78c39f472eSBen Skeggs data = data + *hdr + idx * len; 79c39f472eSBen Skeggs *hdr = len; 80c39f472eSBen Skeggs return data; 81c39f472eSBen Skeggs } 82c39f472eSBen Skeggs return 0x00000000; 83c39f472eSBen Skeggs } 84c39f472eSBen Skeggs 85c39f472eSBen Skeggs u32 86c39f472eSBen Skeggs nvbios_M0203Ep(struct nouveau_bios *bios, int idx, u8 *ver, u8 *hdr, 87c39f472eSBen Skeggs struct nvbios_M0203E *info) 88c39f472eSBen Skeggs { 89c39f472eSBen Skeggs u32 data = nvbios_M0203Ee(bios, idx, ver, hdr); 90c39f472eSBen Skeggs memset(info, 0x00, sizeof(*info)); 91c39f472eSBen Skeggs switch (!!data * *ver) { 92c39f472eSBen Skeggs case 0x10: 93c39f472eSBen Skeggs info->type = (nv_ro08(bios, data + 0x00) & 0x0f) >> 0; 94c39f472eSBen Skeggs info->strap = (nv_ro08(bios, data + 0x00) & 0xf0) >> 4; 95c39f472eSBen Skeggs info->group = (nv_ro08(bios, data + 0x01) & 0x0f) >> 0; 96c39f472eSBen Skeggs return data; 97c39f472eSBen Skeggs default: 98c39f472eSBen Skeggs break; 99c39f472eSBen Skeggs } 100c39f472eSBen Skeggs return 0x00000000; 101c39f472eSBen Skeggs } 102c39f472eSBen Skeggs 103c39f472eSBen Skeggs u32 104c39f472eSBen Skeggs nvbios_M0203Em(struct nouveau_bios *bios, u8 ramcfg, u8 *ver, u8 *hdr, 105c39f472eSBen Skeggs struct nvbios_M0203E *info) 106c39f472eSBen Skeggs { 107c39f472eSBen Skeggs struct nvbios_M0203T M0203T; 108c39f472eSBen Skeggs u8 cnt, len, idx = 0xff; 109c39f472eSBen Skeggs u32 data; 110c39f472eSBen Skeggs 111c39f472eSBen Skeggs if (!nvbios_M0203Tp(bios, ver, hdr, &cnt, &len, &M0203T)) { 112c39f472eSBen Skeggs nv_warn(bios, "M0203T not found\n"); 113c39f472eSBen Skeggs return 0x00000000; 114c39f472eSBen Skeggs } 115c39f472eSBen Skeggs 116c39f472eSBen Skeggs while ((data = nvbios_M0203Ep(bios, ++idx, ver, hdr, info))) { 117c39f472eSBen Skeggs switch (M0203T.type) { 118c39f472eSBen Skeggs case M0203T_TYPE_RAMCFG: 119c39f472eSBen Skeggs if (info->strap != ramcfg) 120c39f472eSBen Skeggs continue; 121c39f472eSBen Skeggs return data; 122c39f472eSBen Skeggs default: 123c39f472eSBen Skeggs nv_warn(bios, "M0203T type %02x\n", M0203T.type); 124c39f472eSBen Skeggs return 0x00000000; 125c39f472eSBen Skeggs } 126c39f472eSBen Skeggs } 127c39f472eSBen Skeggs 128c39f472eSBen Skeggs return data; 129c39f472eSBen Skeggs } 130