diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/atom.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/atom.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/atom.c b/drivers/gpu/drm/amd/amdgpu/atom.c index 3dcb8b32f48b..6fa2229b7229 100644 --- a/drivers/gpu/drm/amd/amdgpu/atom.c +++ b/drivers/gpu/drm/amd/amdgpu/atom.c @@ -31,6 +31,7 @@ #define ATOM_DEBUG +#include "atomfirmware.h" #include "atom.h" #include "atom-names.h" #include "atom-bits.h" @@ -1299,12 +1300,168 @@ static void atom_index_iio(struct atom_context *ctx, int base) } } +static void atom_get_vbios_name(struct atom_context *ctx) +{ + unsigned char *p_rom; + unsigned char str_num; + unsigned short off_to_vbios_str; + unsigned char *c_ptr; + int name_size; + int i; + + const char *na = "--N/A--"; + char *back; + + p_rom = ctx->bios; + + str_num = *(p_rom + OFFSET_TO_GET_ATOMBIOS_NUMBER_OF_STRINGS); + if (str_num != 0) { + off_to_vbios_str = + *(unsigned short *)(p_rom + OFFSET_TO_GET_ATOMBIOS_STRING_START); + + c_ptr = (unsigned char *)(p_rom + off_to_vbios_str); + } else { + /* do not know where to find name */ + memcpy(ctx->name, na, 7); + ctx->name[7] = 0; + return; + } + + /* + * skip the atombios strings, usually 4 + * 1st is P/N, 2nd is ASIC, 3rd is PCI type, 4th is Memory type + */ + for (i = 0; i < str_num; i++) { + while (*c_ptr != 0) + c_ptr++; + c_ptr++; + } + + /* skip the following 2 chars: 0x0D 0x0A */ + c_ptr += 2; + + name_size = strnlen(c_ptr, STRLEN_LONG - 1); + memcpy(ctx->name, c_ptr, name_size); + back = ctx->name + name_size; + while ((*--back) == ' ') + ; + *(back + 1) = '\0'; +} + +static void atom_get_vbios_date(struct atom_context *ctx) +{ + unsigned char *p_rom; + unsigned char *date_in_rom; + + p_rom = ctx->bios; + + date_in_rom = p_rom + OFFSET_TO_VBIOS_DATE; + + ctx->date[0] = '2'; + ctx->date[1] = '0'; + ctx->date[2] = date_in_rom[6]; + ctx->date[3] = date_in_rom[7]; + ctx->date[4] = '/'; + ctx->date[5] = date_in_rom[0]; + ctx->date[6] = date_in_rom[1]; + ctx->date[7] = '/'; + ctx->date[8] = date_in_rom[3]; + ctx->date[9] = date_in_rom[4]; + ctx->date[10] = ' '; + ctx->date[11] = date_in_rom[9]; + ctx->date[12] = date_in_rom[10]; + ctx->date[13] = date_in_rom[11]; + ctx->date[14] = date_in_rom[12]; + ctx->date[15] = date_in_rom[13]; + ctx->date[16] = '\0'; +} + +static unsigned char *atom_find_str_in_rom(struct atom_context *ctx, char *str, int start, + int end, int maxlen) +{ + unsigned long str_off; + unsigned char *p_rom; + unsigned short str_len; + + str_off = 0; + str_len = strnlen(str, maxlen); + p_rom = ctx->bios; + + for (; start <= end; ++start) { + for (str_off = 0; str_off < str_len; ++str_off) { + if (str[str_off] != *(p_rom + start + str_off)) + break; + } + + if (str_off == str_len || str[str_off] == 0) + return p_rom + start; + } + return NULL; +} + +static void atom_get_vbios_pn(struct atom_context *ctx) +{ + unsigned char *p_rom; + unsigned short off_to_vbios_str; + unsigned char *vbios_str; + int count; + + off_to_vbios_str = 0; + p_rom = ctx->bios; + + if (*(p_rom + OFFSET_TO_GET_ATOMBIOS_NUMBER_OF_STRINGS) != 0) { + off_to_vbios_str = + *(unsigned short *)(p_rom + OFFSET_TO_GET_ATOMBIOS_STRING_START); + + vbios_str = (unsigned char *)(p_rom + off_to_vbios_str); + } else { + vbios_str = p_rom + OFFSET_TO_VBIOS_PART_NUMBER; + } + + if (*vbios_str == 0) { + vbios_str = atom_find_str_in_rom(ctx, BIOS_ATOM_PREFIX, 3, 1024, 64); + if (vbios_str == NULL) + vbios_str += sizeof(BIOS_ATOM_PREFIX) - 1; + } + if (vbios_str != NULL && *vbios_str == 0) + vbios_str++; + + if (vbios_str != NULL) { + count = 0; + while ((count < BIOS_STRING_LENGTH) && vbios_str[count] >= ' ' && + vbios_str[count] <= 'z') { + ctx->vbios_pn[count] = vbios_str[count]; + count++; + } + + ctx->vbios_pn[count] = 0; + } +} + +static void atom_get_vbios_version(struct atom_context *ctx) +{ + unsigned char *vbios_ver; + + /* find anchor ATOMBIOSBK-AMD */ + vbios_ver = atom_find_str_in_rom(ctx, BIOS_VERSION_PREFIX, 3, 1024, 64); + if (vbios_ver != NULL) { + /* skip ATOMBIOSBK-AMD VER */ + vbios_ver += 18; + memcpy(ctx->vbios_ver_str, vbios_ver, STRLEN_NORMAL); + } else { + ctx->vbios_ver_str[0] = '\0'; + } +} + struct atom_context *amdgpu_atom_parse(struct card_info *card, void *bios) { int base; struct atom_context *ctx = kzalloc(sizeof(struct atom_context), GFP_KERNEL); char *str; + struct _ATOM_ROM_HEADER *atom_rom_header; + struct _ATOM_MASTER_DATA_TABLE *master_table; + struct _ATOM_FIRMWARE_INFO *atom_fw_info; u16 idx; if (!ctx) @@ -1353,6 +1510,21 @@ struct atom_context *amdgpu_atom_parse(struct card_info *card, void *bios) strlcpy(ctx->vbios_version, str, sizeof(ctx->vbios_version)); } + atom_rom_header = (struct _ATOM_ROM_HEADER *)CSTR(base); + if (atom_rom_header->usMasterDataTableOffset != 0) { + master_table = (struct _ATOM_MASTER_DATA_TABLE *) + CSTR(atom_rom_header->usMasterDataTableOffset); + if (master_table->ListOfDataTables.FirmwareInfo != 0) { + atom_fw_info = (struct _ATOM_FIRMWARE_INFO *) + CSTR(master_table->ListOfDataTables.FirmwareInfo); + ctx->version = atom_fw_info->ulFirmwareRevision; + } + } + + atom_get_vbios_name(ctx); + atom_get_vbios_pn(ctx); + atom_get_vbios_date(ctx); + atom_get_vbios_version(ctx); return ctx; } |