From 9c05636ca72a2dbf41bf0900380f438a0de47319 Mon Sep 17 00:00:00 2001
From: Victor Skvortsov <victor.skvortsov@amd.com>
Date: Mon, 17 Mar 2025 09:32:13 -0400
Subject: [PATCH] drm/amdgpu: Skip pcie_replay_count sysfs creation for VF
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>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 27 ++++++++++++++++------
1 file changed, 20 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 44d3afad71d2e..993f2b3ff8a4a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -227,6 +227,24 @@ 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)
@@ -4172,11 +4190,6 @@ 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)
@@ -4622,7 +4635,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
} 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");
@@ -4759,7 +4772,7 @@ 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);
--
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