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drm/amdgpu: Skip pcie_replay_count sysfs creation for VF

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[ Upstream commit 9c05636ca72a2dbf41bf0900380f438a0de47319 ]

VFs cannot read the NAK_COUNTER register. This information is only
available through PMFW metrics.

Signed-off-by: Victor Skvortsov <victor.skvortsov@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Victor Skvortsov
2025-03-17 09:32:13 -04:00
committed by Greg Kroah-Hartman
parent 67bb217509
commit dca76ee1f0
1 changed files with 20 additions and 7 deletions
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27
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
View File

@@ -170,6 +170,24 @@ 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 int amdgpu_device_attr_sysfs_init(struct amdgpu_device *adev)
{
int ret = 0;
if (!amdgpu_sriov_vf(adev))
ret = sysfs_create_file(&adev->dev->kobj,
&dev_attr_pcie_replay_count.attr);
return ret;
}
static void amdgpu_device_attr_sysfs_fini(struct amdgpu_device *adev)
{
if (!amdgpu_sriov_vf(adev))
sysfs_remove_file(&adev->dev->kobj,
&dev_attr_pcie_replay_count.attr);
}
static ssize_t amdgpu_sysfs_reg_state_get(struct file *f, struct kobject *kobj,
struct bin_attribute *attr, char *buf,
loff_t ppos, size_t count)
@@ -4030,11 +4048,6 @@ static bool amdgpu_device_check_iommu_remap(struct amdgpu_device *adev)
}
#endif
static const struct attribute *amdgpu_dev_attributes[] = {
&dev_attr_pcie_replay_count.attr,
NULL
};
static void amdgpu_device_set_mcbp(struct amdgpu_device *adev)
{
if (amdgpu_mcbp == 1)
@@ -4477,7 +4490,7 @@ fence_driver_init:
} else
adev->ucode_sysfs_en = true;
r = sysfs_create_files(&adev->dev->kobj, amdgpu_dev_attributes);
r = amdgpu_device_attr_sysfs_init(adev);
if (r)
dev_err(adev->dev, "Could not create amdgpu device attr\n");
@@ -4614,7 +4627,7 @@ void amdgpu_device_fini_hw(struct amdgpu_device *adev)
amdgpu_pm_sysfs_fini(adev);
if (adev->ucode_sysfs_en)
amdgpu_ucode_sysfs_fini(adev);
sysfs_remove_files(&adev->dev->kobj, amdgpu_dev_attributes);
amdgpu_device_attr_sysfs_fini(adev);
amdgpu_fru_sysfs_fini(adev);
amdgpu_reg_state_sysfs_fini(adev);