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drm/amdgpu: Add sysfs attribute to get board info

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Add a sysfs attribute which shows the board form factor like OAM or
CEM.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@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
2023-09-28 08:56:20 +05:30
committed by Alex Deucher
parent b0a4553336
commit 76da73f026
1 changed files with 57 additions and 0 deletions
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57
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@@ -162,6 +162,58 @@ static ssize_t amdgpu_device_get_pcie_replay_count(struct device *dev,
static DEVICE_ATTR(pcie_replay_count, 0444,
amdgpu_device_get_pcie_replay_count, NULL);
static ssize_t amdgpu_device_get_board_info(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);
enum amdgpu_pkg_type pkg_type = AMDGPU_PKG_TYPE_CEM;
const char *pkg;
if (adev->smuio.funcs && adev->smuio.funcs->get_pkg_type)
pkg_type = adev->smuio.funcs->get_pkg_type(adev);
switch (pkg_type) {
case AMDGPU_PKG_TYPE_CEM:
pkg = "cem";
break;
case AMDGPU_PKG_TYPE_OAM:
pkg = "oam";
break;
default:
pkg = "unknown";
break;
}
return sysfs_emit(buf, "%s : %s\n", "type", pkg);
}
static DEVICE_ATTR(board_info, 0444, amdgpu_device_get_board_info, NULL);
static struct attribute *amdgpu_board_attrs[] = {
&dev_attr_board_info.attr,
NULL,
};
static umode_t amdgpu_board_attrs_is_visible(struct kobject *kobj,
struct attribute *attr, int n)
{
struct device *dev = kobj_to_dev(kobj);
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = drm_to_adev(ddev);
if (adev->flags & AMD_IS_APU)
return 0;
return attr->mode;
}
static const struct attribute_group amdgpu_board_attrs_group = {
.attrs = amdgpu_board_attrs,
.is_visible = amdgpu_board_attrs_is_visible
};
static void amdgpu_device_get_pcie_info(struct amdgpu_device *adev);
@@ -4038,6 +4090,11 @@ fence_driver_init:
if (r)
dev_err(adev->dev, "Could not create amdgpu device attr\n");
r = devm_device_add_group(adev->dev, &amdgpu_board_attrs_group);
if (r)
dev_err(adev->dev,
"Could not create amdgpu board attributes\n");
amdgpu_fru_sysfs_init(adev);
if (IS_ENABLED(CONFIG_PERF_EVENTS))