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/P0260.h> 27 28 u32 29 nvbios_P0260Te(struct nvkm_bios *bios, 30 u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *xnr, u8 *xsz) 31 { 32 struct bit_entry bit_P; 33 u32 data = 0x00000000; 34 35 if (!bit_entry(bios, 'P', &bit_P)) { 36 if (bit_P.version == 2 && bit_P.length > 0x63) 37 data = nvbios_rd32(bios, bit_P.offset + 0x60); 38 if (data) { 39 *ver = nvbios_rd08(bios, data + 0); 40 switch (*ver) { 41 case 0x10: 42 *hdr = nvbios_rd08(bios, data + 1); 43 *cnt = nvbios_rd08(bios, data + 2); 44 *len = 4; 45 *xnr = nvbios_rd08(bios, data + 3); 46 *xsz = 4; 47 return data; 48 default: 49 break; 50 } 51 } 52 } 53 54 return 0x00000000; 55 } 56 57 u32 58 nvbios_P0260Ee(struct nvkm_bios *bios, int idx, u8 *ver, u8 *len) 59 { 60 u8 hdr, cnt, xnr, xsz; 61 u32 data = nvbios_P0260Te(bios, ver, &hdr, &cnt, len, &xnr, &xsz); 62 if (data && idx < cnt) 63 return data + hdr + (idx * *len); 64 return 0x00000000; 65 } 66 67 u32 68 nvbios_P0260Ep(struct nvkm_bios *bios, int idx, u8 *ver, u8 *len, 69 struct nvbios_P0260E *info) 70 { 71 u32 data = nvbios_P0260Ee(bios, idx, ver, len); 72 memset(info, 0x00, sizeof(*info)); 73 switch (!!data * *ver) { 74 case 0x10: 75 info->data = nvbios_rd32(bios, data); 76 return data; 77 default: 78 break; 79 } 80 return 0x00000000; 81 } 82 83 u32 84 nvbios_P0260Xe(struct nvkm_bios *bios, int idx, u8 *ver, u8 *xsz) 85 { 86 u8 hdr, cnt, len, xnr; 87 u32 data = nvbios_P0260Te(bios, ver, &hdr, &cnt, &len, &xnr, xsz); 88 if (data && idx < xnr) 89 return data + hdr + (cnt * len) + (idx * *xsz); 90 return 0x00000000; 91 } 92 93 u32 94 nvbios_P0260Xp(struct nvkm_bios *bios, int idx, u8 *ver, u8 *hdr, 95 struct nvbios_P0260X *info) 96 { 97 u32 data = nvbios_P0260Xe(bios, idx, ver, hdr); 98 memset(info, 0x00, sizeof(*info)); 99 switch (!!data * *ver) { 100 case 0x10: 101 info->data = nvbios_rd32(bios, data); 102 return data; 103 default: 104 break; 105 } 106 return 0x00000000; 107 } 108