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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 | /* * Copyright 2012 Red Hat Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Authors: Ben Skeggs */ #include "priv.h" #include <subdev/bios.h> #include <subdev/bios/bmp.h> #include <subdev/bios/bit.h> u8 nvbios_checksum(const u8 *data, int size) { u8 sum = 0; while (size--) sum += *data++; return sum; } u16 nvbios_findstr(const u8 *data, int size, const char *str, int len) { int i, j; for (i = 0; i <= (size - len); i++) { for (j = 0; j < len; j++) if ((char)data[i + j] != str[j]) break; if (j == len) return i; } return 0; } int nvbios_extend(struct nvkm_bios *bios, u32 length) { if (bios->size < length) { u8 *prev = bios->data; if (!(bios->data = kmalloc(length, GFP_KERNEL))) { bios->data = prev; return -ENOMEM; } memcpy(bios->data, prev, bios->size); bios->size = length; kfree(prev); return 1; } return 0; } static u8 nvkm_bios_rd08(struct nvkm_object *object, u64 addr) { struct nvkm_bios *bios = (void *)object; return bios->data[addr]; } static u16 nvkm_bios_rd16(struct nvkm_object *object, u64 addr) { struct nvkm_bios *bios = (void *)object; return get_unaligned_le16(&bios->data[addr]); } static u32 nvkm_bios_rd32(struct nvkm_object *object, u64 addr) { struct nvkm_bios *bios = (void *)object; return get_unaligned_le32(&bios->data[addr]); } static void nvkm_bios_wr08(struct nvkm_object *object, u64 addr, u8 data) { struct nvkm_bios *bios = (void *)object; bios->data[addr] = data; } static void nvkm_bios_wr16(struct nvkm_object *object, u64 addr, u16 data) { struct nvkm_bios *bios = (void *)object; put_unaligned_le16(data, &bios->data[addr]); } static void nvkm_bios_wr32(struct nvkm_object *object, u64 addr, u32 data) { struct nvkm_bios *bios = (void *)object; put_unaligned_le32(data, &bios->data[addr]); } static int nvkm_bios_ctor(struct nvkm_object *parent, struct nvkm_object *engine, struct nvkm_oclass *oclass, void *data, u32 size, struct nvkm_object **pobject) { struct nvkm_bios *bios; struct bit_entry bit_i; int ret; ret = nvkm_subdev_create(parent, engine, oclass, 0, "VBIOS", "bios", &bios); *pobject = nv_object(bios); if (ret) return ret; ret = nvbios_shadow(bios); if (ret) return ret; /* detect type of vbios we're dealing with */ bios->bmp_offset = nvbios_findstr(bios->data, bios->size, "\xff\x7f""NV\0", 5); if (bios->bmp_offset) { nv_info(bios, "BMP version %x.%x\n", bmp_version(bios) >> 8, bmp_version(bios) & 0xff); } bios->bit_offset = nvbios_findstr(bios->data, bios->size, "\xff\xb8""BIT", 5); if (bios->bit_offset) nv_info(bios, "BIT signature found\n"); /* determine the vbios version number */ if (!bit_entry(bios, 'i', &bit_i) && bit_i.length >= 4) { bios->version.major = nv_ro08(bios, bit_i.offset + 3); bios->version.chip = nv_ro08(bios, bit_i.offset + 2); bios->version.minor = nv_ro08(bios, bit_i.offset + 1); bios->version.micro = nv_ro08(bios, bit_i.offset + 0); bios->version.patch = nv_ro08(bios, bit_i.offset + 4); } else if (bmp_version(bios)) { bios->version.major = nv_ro08(bios, bios->bmp_offset + 13); bios->version.chip = nv_ro08(bios, bios->bmp_offset + 12); bios->version.minor = nv_ro08(bios, bios->bmp_offset + 11); bios->version.micro = nv_ro08(bios, bios->bmp_offset + 10); } nv_info(bios, "version %02x.%02x.%02x.%02x.%02x\n", bios->version.major, bios->version.chip, bios->version.minor, bios->version.micro, bios->version.patch); return 0; } static void nvkm_bios_dtor(struct nvkm_object *object) { struct nvkm_bios *bios = (void *)object; kfree(bios->data); nvkm_subdev_destroy(&bios->base); } static int nvkm_bios_init(struct nvkm_object *object) { struct nvkm_bios *bios = (void *)object; return nvkm_subdev_init(&bios->base); } static int nvkm_bios_fini(struct nvkm_object *object, bool suspend) { struct nvkm_bios *bios = (void *)object; return nvkm_subdev_fini(&bios->base, suspend); } struct nvkm_oclass nvkm_bios_oclass = { .handle = NV_SUBDEV(VBIOS, 0x00), .ofuncs = &(struct nvkm_ofuncs) { .ctor = nvkm_bios_ctor, .dtor = nvkm_bios_dtor, .init = nvkm_bios_init, .fini = nvkm_bios_fini, .rd08 = nvkm_bios_rd08, .rd16 = nvkm_bios_rd16, .rd32 = nvkm_bios_rd32, .wr08 = nvkm_bios_wr08, .wr16 = nvkm_bios_wr16, .wr32 = nvkm_bios_wr32, }, }; |