[PATCH] drm/amdgpu: Add vbios info ioctl interface
Alex Deucher
alexdeucher at gmail.com
Thu May 20 03:24:11 UTC 2021
On Wed, May 19, 2021 at 10:59 PM Jiawei Gu <Jiawei.Gu at amd.com> wrote:
>
> Add AMDGPU_INFO_VBIOS_INFO subquery id for detailed vbios info.
>
> Provides a way for the user application to get the VBIOS
> information without having to parse the binary.
> It is useful for the user to be able to display in a simple way the VBIOS
> version in their system if they happen to encounter an issue.
>
> V2:
> Use numeric serial.
> Parse and expose vbios version string.
>
> V3:
> Remove redundant data in drm_amdgpu_info_vbios struct.
>
> V4:
> 64 bit alignment in drm_amdgpu_info_vbios.
>
> Signed-off-by: Jiawei Gu <Jiawei.Gu at amd.com>
Assuming you send out the updated umr patch,
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 15 ++
> drivers/gpu/drm/amd/amdgpu/atom.c | 172 +++++++++++++++++++++
> drivers/gpu/drm/amd/amdgpu/atom.h | 10 ++
> drivers/gpu/drm/amd/include/atomfirmware.h | 5 +
> include/uapi/drm/amdgpu_drm.h | 11 ++
> 5 files changed, 213 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> index 8d12e474745a..524e4fe5efe8 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> @@ -861,6 +861,21 @@ int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
> min((size_t)size, (size_t)(bios_size - bios_offset)))
> ? -EFAULT : 0;
> }
> + case AMDGPU_INFO_VBIOS_INFO: {
> + struct drm_amdgpu_info_vbios vbios_info = {};
> + struct atom_context *atom_context;
> +
> + atom_context = adev->mode_info.atom_context;
> + memcpy(vbios_info.name, atom_context->name, sizeof(atom_context->name));
> + memcpy(vbios_info.vbios_pn, atom_context->vbios_pn, sizeof(atom_context->vbios_pn));
> + vbios_info.version = atom_context->version;
> + memcpy(vbios_info.vbios_ver_str, atom_context->vbios_ver_str,
> + sizeof(atom_context->vbios_ver_str));
> + memcpy(vbios_info.date, atom_context->date, sizeof(atom_context->date));
> +
> + return copy_to_user(out, &vbios_info,
> + min((size_t)size, sizeof(vbios_info))) ? -EFAULT : 0;
> + }
> default:
> DRM_DEBUG_KMS("Invalid request %d\n",
> info->vbios_info.type);
> 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;
> }
> diff --git a/drivers/gpu/drm/amd/amdgpu/atom.h b/drivers/gpu/drm/amd/amdgpu/atom.h
> index d279759cab47..0c1839824520 100644
> --- a/drivers/gpu/drm/amd/amdgpu/atom.h
> +++ b/drivers/gpu/drm/amd/amdgpu/atom.h
> @@ -112,6 +112,10 @@ struct drm_device;
> #define ATOM_IO_SYSIO 2
> #define ATOM_IO_IIO 0x80
>
> +#define STRLEN_NORMAL 32
> +#define STRLEN_LONG 64
> +#define STRLEN_VERYLONG 254
> +
> struct card_info {
> struct drm_device *dev;
> void (* reg_write)(struct card_info *, uint32_t, uint32_t); /* filled by driver */
> @@ -140,6 +144,12 @@ struct atom_context {
> uint32_t *scratch;
> int scratch_size_bytes;
> char vbios_version[20];
> +
> + uint8_t name[STRLEN_LONG];
> + uint8_t vbios_pn[STRLEN_LONG];
> + uint32_t version;
> + uint8_t vbios_ver_str[STRLEN_NORMAL];
> + uint8_t date[STRLEN_NORMAL];
> };
>
> extern int amdgpu_atom_debug;
> diff --git a/drivers/gpu/drm/amd/include/atomfirmware.h b/drivers/gpu/drm/amd/include/atomfirmware.h
> index 275468e4be60..28deecc2f990 100644
> --- a/drivers/gpu/drm/amd/include/atomfirmware.h
> +++ b/drivers/gpu/drm/amd/include/atomfirmware.h
> @@ -197,6 +197,9 @@ enum atom_dp_vs_preemph_def{
> DP_VS_LEVEL0_PREEMPH_LEVEL3 = 0x18,
> };
>
> +#define BIOS_ATOM_PREFIX "ATOMBIOS"
> +#define BIOS_VERSION_PREFIX "ATOMBIOSBK-AMD"
> +#define BIOS_STRING_LENGTH 43
>
> /*
> enum atom_string_def{
> @@ -215,6 +218,8 @@ enum atombios_image_offset{
> MAXSIZE_OF_ATOMBIOS_ASIC_BUS_MEM_TYPE = 20, /*including the terminator 0x0!*/
> OFFSET_TO_GET_ATOMBIOS_NUMBER_OF_STRINGS = 0x2f,
> OFFSET_TO_GET_ATOMBIOS_STRING_START = 0x6e,
> + OFFSET_TO_VBIOS_PART_NUMBER = 0x80,
> + OFFSET_TO_VBIOS_DATE = 0x50,
> };
>
> /****************************************************************************
> diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
> index 9169df7fadee..90bcd64c0147 100644
> --- a/include/uapi/drm/amdgpu_drm.h
> +++ b/include/uapi/drm/amdgpu_drm.h
> @@ -756,6 +756,8 @@ struct drm_amdgpu_cs_chunk_data {
> #define AMDGPU_INFO_VBIOS_SIZE 0x1
> /* Subquery id: Query vbios image */
> #define AMDGPU_INFO_VBIOS_IMAGE 0x2
> + /* Subquery id: Query vbios info */
> + #define AMDGPU_INFO_VBIOS_INFO 0x3
> /* Query UVD handles */
> #define AMDGPU_INFO_NUM_HANDLES 0x1C
> /* Query sensor related information */
> @@ -949,6 +951,15 @@ struct drm_amdgpu_info_firmware {
> __u32 feature;
> };
>
> +struct drm_amdgpu_info_vbios {
> + __u8 name[64];
> + __u8 vbios_pn[64];
> + __u32 version;
> + __u32 pad;
> + __u8 vbios_ver_str[32];
> + __u8 date[32];
> +};
> +
> #define AMDGPU_VRAM_TYPE_UNKNOWN 0
> #define AMDGPU_VRAM_TYPE_GDDR1 1
> #define AMDGPU_VRAM_TYPE_DDR2 2
> --
> 2.17.1
>
> _______________________________________________
> amd-gfx mailing list
> amd-gfx at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/amd-gfx
More information about the amd-gfx
mailing list