Re: [PATCH] drm/amd/pm: Add mem_busy_percent for GCv9.4.3 apu

[Lazar, Lijo]

On 12/22/2023 10:52 PM, Asad Kamal wrote:

Expose sysfs entry mem_busy_percent for GC version
9.4.3 APU system

Signed-off-by: Asad Kamal <asad.ka...@amd.com>

Reviewed-by: Lijo Lazar <lijo.la...@amd.com>

Thanks,
Lijo

---
  drivers/gpu/drm/amd/pm/amdgpu_pm.c | 4 +++-
  1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c 
b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
index 2cd995b0ceba..f3cb490fe79b 100644
--- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
@@ -2168,7 +2168,9 @@ static int default_attr_update(struct amdgpu_device 
*adev, struct amdgpu_device_
                if (amdgpu_dpm_is_overdrive_supported(adev))
                        *states = ATTR_STATE_SUPPORTED;
        } else if (DEVICE_ATTR_IS(mem_busy_percent)) {
-               if (adev->flags & AMD_IS_APU || gc_ver == IP_VERSION(9, 0, 1))
+               if ((adev->flags & AMD_IS_APU &&
+                    gc_ver != IP_VERSION(9, 4, 3)) ||
+                   gc_ver == IP_VERSION(9, 0, 1))
                        *states = ATTR_STATE_UNSUPPORTED;
        } else if (DEVICE_ATTR_IS(pcie_bw)) {
                /* PCIe Perf counters won't work on APU nodes */