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2019-07-18drm/amdgpu: set rlc funcs for navi14Xiaojie Yuan
Same as navi10. Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18drm/amdgpu: add me/mec configurations for navi14Xiaojie Yuan
Add navi14 to appropriate cases. Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18drm/amdgpu/gfx10: add clockgating support for navi14Xiaojie Yuan
Same as navi10. Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Jack Xiao <Jack.Xiao@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18drm/amdgpu/gfx10: add gfx config for navi14Xiaojie Yuan
Add gfx config details for navi14. Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Jack Xiao <Jack.Xiao@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18drm/amdgpu/gfx10: add placeholder for navi14 golden settingsXiaojie Yuan
To be filled in once available. Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Jack Xiao <Jack.Xiao@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18drm/amdgpu/gfx10: add support for navi14 firmwareXiaojie Yuan
Add support for navi14 CP firmware files. Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Jack Xiao <Jack.Xiao@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18drm/amdgpu/sdma5: set clock gating for navi14Xiaojie Yuan
same as navi10. Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18drm/amdgpu/sdma5: update sdma5 golden settings for navi14tiancyin
add new registers: mmSDMA0_RLC3_RB_WPTR_POLL_CNTL, mmSDMA1_RLC3_RB_WPTR_POLL_CNTL Reviewed-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Signed-off-by: tiancyin <tianci.yin@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18drm/amdgpu/sdma5: add sdma5_0 golden settings for navi14Xiaojie Yuan
Add settings for navi14. Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Reviewed-by: Snow Zhang <Snow.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18drm/amdgpu/sdma5: add placeholder for navi14 golden settingsXiaojie Yuan
To be filled in once they are available. Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Jack Xiao <Jack.Xiao@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18drm/amdgpu/sdma5: add support for navi14 firmwareXiaojie Yuan
Add support for navi14 sdma firmware files. Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Jack Xiao <Jack.Xiao@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18drm/amdgpu/gmc10: add navi14 supportXiaojie Yuan
same as navi10 Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Jack Xiao <Jack.Xiao@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18drm/amdgpu: increase max instance number for hw ipXiaojie Yuan
max instance number is 6 for navi10 and 7 for navi14, and we increase the reg_offset array size to avoid out-of-bound access Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18drm/amdgpu/discovery: init reg base offset via ip discovery for navi14Xiaojie Yuan
Add IP discovery for navi14. Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18drm/amdgpu/soc15: initialize reg base for navi14 (v2)Xiaojie Yuan
Initialize the IP register base offsets for navi14. v2: squash in MP, CLK, THM updates Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Jack Xiao <Jack.Xiao@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18drm/amdgpu: add navi14 ucode loading methodXiaojie Yuan
Same as navi10. Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Jack Xiao <Jack.Xiao@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18drm/amdgpu: set asic family and ip blocks for navi14Xiaojie Yuan
same with navi10 Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Jack Xiao <Jack.Xiao@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18drm/amdgpu: add gpu_info firmware for navi14Xiaojie Yuan
Add navi14 to case statement to load the GPU info firmware. Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Jack Xiao <Jack.Xiao@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18drm/amdgpu: add navi14 asic typeXiaojie Yuan
Add CHIP_NAVI14 to the list of asic types. Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Jack Xiao <Jack.Xiao@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18drm/amd/display: init res_pool dccg_ref, dchub_ref with xtalin_freqhersen wu
[WHY] dc sw clock implementation of navi10 and raven are not exact the same. dcccg, dchub reference clock initialization is done after dc calls vbios dispcontroller_init table. for raven family, before dispcontroller_init is called by dc, the ref clk values are referred by sw clock implementation and program asic register using wrong values. this causes dchub pstate error. This need provide valid ref clk values. for navi10, since dispcontroller_init is not called, dchubbub_global_timer_enable = 0, hubbub2_get_dchub_ref_freq will hit aeert. this need remove hubbub2_get_dchub_ref_freq from this location and move to dcn20_init_hw. [HOW] for all asic, initialize dccg, dchub ref clk with data from vbios firmware table by default. for raven asic family, use these data from vbios, for asic which support sw dccg component, like navi10, read ref clk by sw dccg functions and update the ref clk. Signed-off-by: hersen wu <hersenxs.wu@amd.com> Reviewed-by: Jun Lei <Jun.Lei@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18drm/amdgpu/pm: remove check for pp funcs in freq sysfs handlersAlex Deucher
The dpm sensor function already does this for us. This fixes the freq*_input files with the new SMU implementation. Reviewed-by: Evan Quan <evan.quan@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18drm/amd/display: Force uclk to max for every stateNicholas Kazlauskas
Workaround for now to avoid underflow. The uclk switch time should really be bumped up to 404, but doing so would expose p-state hang issues for higher bandwidth display configurations. Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Signed-off-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-17drm/amdkfd: Remove GWS from process during uninitJoseph Greathouse
If we shut down a process without having destroyed its GWS-using queues, it is possible that GWS BO will still be in the process BO list during the gpuvm destruction. This list should be empty at that time, so we should remove the GWS allocation at the process uninit point if it is still around. Signed-off-by: Joseph Greathouse <Joseph.Greathouse@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-17drm/amd/amdgpu: Fix offset for vmid selection in debugfs interfaceTom St Denis
The register debugfs interface was using the wrong bitmask for vmid selection for GFX_CNTL. Signed-off-by: Tom St Denis <tom.stdenis@amd.com> Acked-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-17drm/amd/powerplay: update vega20 driver if to fit latest SMU firmwareEvan Quan
Optimization for the socket power calculation is introduced. Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Kenneth Feng <kenneth.feng@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-17drm/amd/powerplay: maintain SMU FW backward compatibilityEvan Quan
Do not halt driver loading on if_version mismatch. As our driver and FWs are backward compatible. Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Kenneth Feng <kenneth.feng@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-17drm/amd/powerplay: correct smu_update_table usageEvan Quan
The interface was used in a confusing way. In profile mode scenario, the 2nd parameter of the interface was used in a different way from other scenarios. Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-17drm/amd/powerplay: fix deadlock around smu_handle_task V2Evan Quan
As the lock was already held on the entrance to smu_handle_task. - V2: lock in small granularity Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Kevin Wang <kevin1.wang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-17drm/amd/powerplay: avoid access before allocationEvan Quan
No access before allocation. Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Feifei Xu <Feifei.Xu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-17drm/amd/powerplay: fix memory allocation failure check V2Evan Quan
Fix memory allocation failure check. - V2: fix one more similar error Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-17drm/amdgpu: Fix silent amdgpu_bo_move failuresFelix Kuehling
Under memory pressure, buffer moves between RAM to VRAM can fail when there is no GTT space available. In those cases amdgpu_bo_move falls back to ttm_bo_move_memcpy, which seems to succeed, although it doesn't really support non-contiguous or invisible VRAM. This manifests as VM faults with corrupted page table entries in KFD eviction stress tests. Print some helpful messages when lack of GTT space is causing buffer moves to fail. Check that source and destination memory regions are supported by ttm_bo_move_memcpy before taking that fallback. Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-17drm/amdgpu: drop dead headerAlex Deucher
Not used anymore. Reviewed-by: Evan Quan <evan.quan@amd.com> Acked-by: Christian König <christian.koenig@amd.com> Noticed-by: Dave Airlie <airlied@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-16drm/amd/powerplay: Use proper enums in vega20_print_clk_levelsNathan Chancellor
clang warns: drivers/gpu/drm/amd/amdgpu/../powerplay/vega20_ppt.c:995:39: warning: implicit conversion from enumeration type 'PPCLK_e' to different enumeration type 'enum smu_clk_type' [-Wenum-conversion] ret = smu_get_current_clk_freq(smu, PPCLK_SOCCLK, &now); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../powerplay/vega20_ppt.c:1016:39: warning: implicit conversion from enumeration type 'PPCLK_e' to different enumeration type 'enum smu_clk_type' [-Wenum-conversion] ret = smu_get_current_clk_freq(smu, PPCLK_FCLK, &now); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../powerplay/vega20_ppt.c:1031:39: warning: implicit conversion from enumeration type 'PPCLK_e' to different enumeration type 'enum smu_clk_type' [-Wenum-conversion] ret = smu_get_current_clk_freq(smu, PPCLK_DCEFCLK, &now); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~ The values are mapped one to one in vega20_get_smu_clk_index so just use the proper enums here. Fixes: 096761014227 ("drm/amd/powerplay: support sysfs to get socclk, fclk, dcefclk") Link: https://github.com/ClangBuiltLinux/linux/issues/587 Reviewed-by: Evan Quan <evan.quan@amd.com> Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-16drm/amdgpu/gfx10: set SH_MEM_CONFIG.INITIAL_INST_PREFETCHNicolai Hähnle
Prefetch mode 0 is not supported and can lead to hangs with certain very specific code patterns. Set a sound prefetch mode for all VMIDs rather than forcing all shaders to set the prefetch mode at the beginning. Reduce code duplication a bit while we're at it. Note that the 64-bit address mode enum and the retry all enum are both 0, so the only functional change is in the INITIAL_INST_PREFETCH field. Signed-off-by: Nicolai Hähnle <nicolai.haehnle@amd.com> Reviewed-by: Marek Olšák <marek.olsak@amd.com> Acked-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-16drm/amd/powerplay: enable fw ctf,apcc dfll and gfx ssKenneth Feng
enable fw ctf, apcc dfll and gfx ss on navi10. fw ctf: when the fw ctf is triggered, the gfx and soc power domain are shut down. fan speed is boosted to the maximum. gfx ss: hardware feature, sanity check has been done. apcc dfll: can check the scoreboard in smu fw to confirm if it's enabled. no need to do further check since the gfx hardware control the frequency once a pcc signal comes. Signed-off-by: Kenneth Feng <kenneth.feng@amd.com> Reviewed-by: Evan Quan <evan.quan@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-16drm/amdgpu: check kdb_bin_size to exclude kdb loading sequenceHawking Zhang
The legacy navi10 sos binary will not carry on kdb image. the kdb_start_addr is actually the start address of sys_drv image and shouldn't be sent to psp bootloader. Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com> Reviewed-by: John Clements <john.clements@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-16drm/amdgpu: Fix unaligned memory copiesFelix Kuehling
When starting a new mm_node, the page_offset becomes 0. Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-16drm/amdgpu: replace simple_strtol() by kstrtou32()Wang Xiayang
The simple_strtol() function is deprecated. kstrto[l,u32]() is the correct replacement as it can properly handle overflows. This patch replaces the deprecated simple_strtol() use introduced recently. As clk is of type uint32_t, we are safe to use kstrtou32(). It is also safe to return zero on string parsing error, similar to the case of returning zero if buf is empty in parse_clk(). Fixes: bb5a2bdf36a8 ("drm/amdgpu: support dpm level modification under virtualization v3") Signed-off-by: Wang Xiayang <xywang.sjtu@sjtu.edu.cn> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-16drm/amdgpu: remove memset after kzallocFuqian Huang
kzalloc has already zeroed the memory during the allocation. So memset is unneeded. Reviewed-by: Emil Velikov <emil.velikov@collabora.com> Signed-off-by: Fuqian Huang <huangfq.daxian@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-16drm/amd/amdgpu: hide #warning for missing DC configArnd Bergmann
It is annoying to have #warnings that trigger in randconfig builds like drivers/gpu/drm/amd/amdgpu/soc15.c:653:3: error: "Enable CONFIG_DRM_AMD_DC for display support on SOC15." drivers/gpu/drm/amd/amdgpu/nv.c:400:3: error: "Enable CONFIG_DRM_AMD_DC for display support on navi." Remove these and rely on the users to turn these on. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-16drm/amdgpu: Fix Vega20 Perf counter for pcie_bwKent Russell
The perf counter for Vega20 is 108, instead of 104 which it was on all previous GPUs, so add a check to use the appropriate value. Signed-off-by: Kent Russell <kent.russell@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-16drm/amd/amdgpu: Add missing select_me_pipe_q() for gfx10Tom St Denis
The ability to select GFX GRBM me/pipe/queue/vmid was missing from the gfx10 driver. This patch adds it. Used by the debugfs register interface to select GFX resources when read/writing registers. Signed-off-by: Tom St Denis <tom.stdenis@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-16drm/amd/amdgpu: Add VMID to SRBM debugfs bank selectionTom St Denis
Add 5 bits to the offset for SRBM selection to handle VMIDs. Also update the select_me_pipe_q() callback to also select VMID. Signed-off-by: Tom St Denis <tom.stdenis@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-16drm/amdgpu: extend AMDGPU_CTX_PRIORITY_NORMAL commentEmil Velikov
Currently the AMDGPU_CTX_PRIORITY_* defines are used in both drm_amdgpu_ctx_in::priority and drm_amdgpu_sched_in::priority. Extend the comment to mention the CAP_SYS_NICE or DRM_MASTER requirement is only applicable with the former. Cc: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl> Cc: Christian König <christian.koenig@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Emil Velikov <emil.velikov@collabora.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-16drm/amd/powerplay: add helper of smu_clk_dpm_is_enabled for smuKevin Wang
v2: change function name to smu_clk_dpm_is_enabled. add this helper function to check dpm clk feature is enabled. Signed-off-by: Kevin Wang <kevin1.wang@amd.com> Reviewed-by: Evan Quan <evan.quan@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-16drm/amd/powerplay: fix save dpm level error for smuKevin Wang
the save dpm level should be save previous dpm profile level, should not modified by get dpm level function. eg: default auto 1. auto -> standard ==> dpm_level = standard, save_dpm = auto. 2. standard -> auto ==> dpm_level = auto, save_dpm = standard. Signed-off-by: Kevin Wang <kevin1.wang@amd.com> Reviewed-by: Evan Quan <evan.quan@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-16drm/amd/powerplay: avoid double check feature enabledKevin Wang
the unforce_dpm_levels doesn't need to check feature enablement. because the smu_get_dpm_freq_range function has check feature logic. Signed-off-by: Kevin Wang <kevin1.wang@amd.com> Reviewed-by: Evan Quan <evan.quan@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-16drm/amd/powerplay: add standard profile dpm support for smuKevin Wang
1. the standard dpm is not support before. 2. use auto profile to adapt standard profile. Signed-off-by: Kevin Wang <kevin1.wang@amd.com> Reviewed-by: Evan Quan <evan.quan@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-16drm/amd/powerplay: add socclk profile dpm support.Kevin Wang
1.miss socclk profile support when bringup. 2.add feature check for socclk. Signed-off-by: Kevin Wang <kevin1.wang@amd.com> Reviewed-by: Evan Quan <evan.quan@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-16drm/amdkfd: Consistently apply noretry settingFelix Kuehling
Apply the same setting to SH_MEM_CONFIG and VM_CONTEXT1_CNTL. This makes the noretry param no longer KFD-specific. On GFX10 I'm not changing SH_MEM_CONFIG in this commit because GFX10 has different retry behaviour in the SQ and I don't have a way to test it at the moment. Suggested-by: Christian König <Christian.Koenig@amd.com> CC: Philip Yang <Philip.Yang@amd.com> Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> Reviewed-by : Shaoyun.liu < Shaoyun.liu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>