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drm/amdgpu: Add more FRU field information

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Add support to read Manufacturer Name and FRU File Id fields. Also add
sysfs device attributes for external usage.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Lijo Lazar 2023-10-04 18:32:02 +05:30 committed by Alex Deucher
parent 8a2b51392a
commit ac6b1f275f
2 changed files with 51 additions and 3 deletions
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52
drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c
View File

@ -200,10 +200,19 @@ int amdgpu_fru_get_product_info(struct amdgpu_device *adev)
/* Now extract useful information from the PIA.
*
* Skip the Manufacturer Name at [3] and go directly to
* the Product Name field.
* Read Manufacturer Name field whose length is [3].
*/
addr = 3 + 1 + (pia[3] & 0x3F);
addr = 3;
if (addr + 1 >= len)
goto Out;
memcpy(fru_info->manufacturer_name, pia + addr + 1,
min_t(size_t, sizeof(fru_info->manufacturer_name),
pia[addr] & 0x3F));
fru_info->manufacturer_name[sizeof(fru_info->manufacturer_name) - 1] =
'\0';
/* Read Product Name field. */
addr += 1 + (pia[addr] & 0x3F);
if (addr + 1 >= len)
goto Out;
memcpy(fru_info->product_name, pia + addr + 1,
@ -229,6 +238,18 @@ int amdgpu_fru_get_product_info(struct amdgpu_device *adev)
memcpy(fru_info->serial, pia + addr + 1,
min_t(size_t, sizeof(fru_info->serial), pia[addr] & 0x3F));
fru_info->serial[sizeof(fru_info->serial) - 1] = '\0';
/* Asset Tag field */
addr += 1 + (pia[addr] & 0x3F);
/* FRU File Id field. This could be 'null'. */
addr += 1 + (pia[addr] & 0x3F);
if ((addr + 1 >= len) || !(pia[addr] & 0x3F))
goto Out;
memcpy(fru_info->fru_id, pia + addr + 1,
min_t(size_t, sizeof(fru_info->fru_id), pia[addr] & 0x3F));
fru_info->fru_id[sizeof(fru_info->fru_id) - 1] = '\0';
Out:
kfree(pia);
return 0;
@ -300,10 +321,35 @@ static ssize_t amdgpu_fru_serial_number_show(struct device *dev,
static DEVICE_ATTR(serial_number, 0444, amdgpu_fru_serial_number_show, NULL);
static ssize_t amdgpu_fru_id_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = drm_to_adev(ddev);
return sysfs_emit(buf, "%s\n", adev->fru_info->fru_id);
}
static DEVICE_ATTR(fru_id, 0444, amdgpu_fru_id_show, NULL);
static ssize_t amdgpu_fru_manufacturer_name_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = drm_to_adev(ddev);
return sysfs_emit(buf, "%s\n", adev->fru_info->manufacturer_name);
}
static DEVICE_ATTR(manufacturer, 0444, amdgpu_fru_manufacturer_name_show, NULL);
static const struct attribute *amdgpu_fru_attributes[] = {
&dev_attr_product_name.attr,
&dev_attr_product_number.attr,
&dev_attr_serial_number.attr,
&dev_attr_fru_id.attr,
&dev_attr_manufacturer.attr,
NULL
};

2
drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.h
View File

@ -31,6 +31,8 @@ struct amdgpu_fru_info {
char product_number[20];
char product_name[AMDGPU_PRODUCT_NAME_LEN];
char serial[20];
char manufacturer_name[32];
char fru_id[32];
};
int amdgpu_fru_get_product_info(struct amdgpu_device *adev);