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drm/amdgpu: always get PTL state from PSP under sriov

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In SR-IOV mode, always query the latest PTL status from host via
psp_performance_monitor_hw() to ensure the sysfs shows real-time
hardware state.

Signed-off-by: Victor Zhao <Victor.Zhao@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Victor Zhao 2025-12-18 18:41:52 +08:00 committed by Alex Deucher
parent cabbba1716
commit 1c760249a5
1 changed files with 27 additions and 3 deletions
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30
drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
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@ -1517,6 +1517,18 @@ static ssize_t ptl_enable_show(struct device *dev, struct device_attribute *attr
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = drm_to_adev(ddev);
struct amdgpu_ptl *ptl = &adev->psp.ptl;
uint32_t ptl_state, fmt1, fmt2;
int ret;
if (amdgpu_sriov_vf(adev)) {
ptl_state = ptl->enabled;
fmt1 = ptl->fmt1;
fmt2 = ptl->fmt2;
ret = amdgpu_ptl_perf_monitor_ctrl(adev, PSP_PTL_PERF_MON_QUERY,
&ptl_state, &fmt1, &fmt2);
if (ret)
return ret;
}
if (ptl->permanently_disabled)
return sysfs_emit(buf, "permanently disabled\n");
@ -1575,11 +1587,23 @@ static ssize_t ptl_format_show(struct device *dev, struct device_attribute *attr
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = drm_to_adev(ddev);
struct psp_context *psp = &adev->psp;
struct amdgpu_ptl *ptl = &adev->psp.ptl;
uint32_t ptl_state, fmt1, fmt2;
int ret;
if (amdgpu_sriov_vf(adev)) {
ptl_state = ptl->enabled;
fmt1 = ptl->fmt1;
fmt2 = ptl->fmt2;
ret = amdgpu_ptl_perf_monitor_ctrl(adev, PSP_PTL_PERF_MON_QUERY,
&ptl_state, &fmt1, &fmt2);
if (ret)
return ret;
}
return sysfs_emit(buf, "%s,%s\n",
amdgpu_ptl_fmt_str[psp->ptl.fmt1],
amdgpu_ptl_fmt_str[psp->ptl.fmt2]);
amdgpu_ptl_fmt_str[ptl->fmt1],
amdgpu_ptl_fmt_str[ptl->fmt2]);
}
static umode_t amdgpu_ptl_is_visible(struct kobject *kobj, struct attribute *attr, int idx)