[PATCH] drm/amdgpu: Add vbios info ioctl interface
Jiawei Gu
Jiawei.Gu at amd.com
Thu May 20 02:58:46 UTC 2021
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>
---
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
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