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drm/amd/pm: fixes a random hang in S4 for SMU v13.0.4/11

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BugLink: https://bugs.launchpad.net/bugs/2065912

commit 31729e8c21ecfd671458e02b6511eb68c2225113 upstream.

While doing multiple S4 stress tests, GC/RLC/PMFW get into
an invalid state resulting into hard hangs.

Adding a GFX reset as workaround just before sending the
MP1_UNLOAD message avoids this failure.

Signed-off-by: Tim Huang <Tim.Huang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Mario Limonciello <superm1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>
This commit is contained in:
Tim Huang
2024-03-27 13:10:37 +08:00
committed by Stefan Bader
parent e929d3dc07
commit 7bd8922e2f
1 changed files with 11 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_4_ppt.c
+11 -1
View File
@@ -226,8 +226,18 @@ static int smu_v13_0_4_system_features_control(struct smu_context *smu, bool en)
struct amdgpu_device *adev = smu->adev;
int ret = 0;
if (!en && !adev->in_s0ix)
if (!en && !adev->in_s0ix) {
/* Adds a GFX reset as workaround just before sending the
* MP1_UNLOAD message to prevent GC/RLC/PMFW from entering
* an invalid state.
*/
ret = smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_GfxDeviceDriverReset,
SMU_RESET_MODE_2, NULL);
if (ret)
return ret;
ret = smu_cmn_send_smc_msg(smu, SMU_MSG_PrepareMp1ForUnload, NULL);
}
return ret;
}