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2025-12-08drm/amd/pm: Use emit_clk_levels in SMUv13.0.4Lijo Lazar1-12/+12
Move to emit_clk_levels from print_clk_levels Signed-off-by: Lijo Lazar <lijo.lazar@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amd/pm: Use emit_clk_levels in SMUv13.0.0Lijo Lazar1-11/+10
Move to emit_clk_levels from print_clk_levels Signed-off-by: Lijo Lazar <lijo.lazar@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amd/pm: Use emit_clk_levels in renoirLijo Lazar1-26/+26
Move to emit_clk_levels from print_clk_levels Signed-off-by: Lijo Lazar <lijo.lazar@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amd/pm: Use emit_clk_levels in vangoghLijo Lazar1-19/+20
Move to emit_clk_levels from print_clk_levels Signed-off-by: Lijo Lazar <lijo.lazar@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amd/pm: Use emit_clk_levels in cyan skillfishLijo Lazar1-9/+8
Move to emit_clk_levels from print_clk_levels Signed-off-by: Lijo Lazar <lijo.lazar@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amdgpu: add soc config init for GC v12_1Likun Gao3-0/+14
Add function to initialize soc configuration information for GC 12.1.0 ASICs. Use it to map IPs and other SOC related information once IP configuration information is available through discovery. Signed-off-by: Likun Gao <Likun.Gao@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amd/pm: Use emit_clk_levels in sienna_cichildLijo Lazar1-14/+13
Move to emit_clk_levels from print_clk_levels Signed-off-by: Lijo Lazar <lijo.lazar@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amd/pm: Remove print_clk_levels from navi10Lijo Lazar1-193/+0
Keep only emit_clk_levels as it covers print_clk_levels functionality Signed-off-by: Lijo Lazar <lijo.lazar@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08amdkfd: fence handler evict and restore a kfd process by its context idZhu Lingshan3-5/+10
In fence enable signaling handler, kfd evicts and restores the corresponding kfd_process, this commit helps find the kfd_process by both its mm and context id. Signed-off-by: Zhu Lingshan <lingshan.zhu@amd.com> Reviewed-by: Felix Kuehling <felix.kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08amdkfd: record kfd context id in amdkfd_fenceZhu Lingshan4-5/+9
This commit records the context id of the cooresponding kfd process in amdkfd_fence Signed-off-by: Zhu Lingshan <lingshan.zhu@amd.com> Reviewed-by: Felix Kuehling <felix.kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amdgpu/mes12_1: set multi-xcc mes log addressMichael Chen1-1/+1
Set mes event log address based on xcc id and pipe. Signed-off-by: Michael Chen <michael.chen@amd.com> Reviewed-by: Jack Xiao <Jack.Xiao@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amdgpu/mes12_1: add cooperative dispatch supportJack Xiao2-3/+69
Add initial cooperative dispatch MES support. a. set shared cmd buffer for the group of cooperative dispatch mes. b. automatically dispatch add_hw_queue/remove_hw_queue to master mes. Signed-off-by: Jack Xiao <Jack.Xiao@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amdkfd: Add interrupt handling for GFX 12.1.0Mukul Joshi5-4/+416
Add interrupt handling for GFX 12.1.0 similar to what is done for GFX 9.4.3. Signed-off-by: Mukul Joshi <mukul.joshi@amd.com> Reviewed-by: Alex Sierra <alex.sierra@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amdkfd: Add MQD manager for GFX 12.1.0Mukul Joshi6-1/+756
This patch adds the following functionality for GFX 12.1.0: 1. Add a new MQD manager for GFX v12.1.0. 2. Add a new 12.1.0 specific device queue manager file. Signed-off-by: Mukul Joshi <mukul.joshi@amd.com> Reviewed-by: Alex Sierra <alex.sierra@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amdkfd: Add GFX 12.1.0 support in KFDMukul Joshi2-1/+6
Add support for GFX 12.1.0 in KFD. Signed-off-by: Mukul Joshi <mukul.joshi@amd.com> Reviewed-by: Alex Sierra <alex.sierra@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amdgpu: Setup PCIe atomics bit in PTE on GFX 12.1.0Mukul Joshi2-0/+8
To enable atomic access to memory, setup the new PCIe atomics bit in PTE on GFX 12.1.0. Signed-off-by: Mukul Joshi <mukul.joshi@amd.com> Reviewed-by: Alex Sierra <alex.sierra@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amdgpu: Setup Atomics enable in TCP UTCL0 for GFX 12.1.0Mukul Joshi1-0/+6
We need to explicitly setup atomics enable in TCP UTCL0 to enable PCIe atomics to host memory. Signed-off-by: Mukul Joshi <mukul.joshi@amd.com> Reviewed-by: Alex Sierra <alex.sierra@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amdgpu: Fix golden register init for GFX 12.1.0Mukul Joshi1-12/+8
TCP_UTCL0 registers are not per XCD so don't init them on a per XCD basis. Fixes: ad5f1ee0a9b0 ("drm/amdgpu: Add initial support for gfx v12_1") Signed-off-by: Mukul Joshi <mukul.joshi@amd.com> Reviewed-by: Alex Sierra <alex.sierra@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amdgpu: Include the correct pkt header for gfx v12_1Hawking Zhang2-4/+5
GFX v12_1 should use packets defined in gfx_v12_1_pkt header file. Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com> Reviewed-by: Likun Gao <Likun.Gao@amd.com> Acked-by: Feifei Xu <Feifei.Xu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amd: include rrmt mode for mes_v12_1Alex Sierra2-0/+49
Implement rrmt for misc read/write regs ops in mes_v12. This covers LOCAL/REMOTE XCD and LOCAL/REMOTE AID. v2: fix comments (Alex) Signed-off-by: Alex Sierra <alex.sierra@amd.com> Reviewed-by: Mukul Joshi <mukul.joshi@amd.com> Reviewed-by: Michael Chen <michael.chen@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amdgpu: skip SDMA autoload copy if not initializedLikun Gao1-7/+9
Skip SDMA firmware copy for rlc autoload if SDMA not enabled. Signed-off-by: Likun Gao <Likun.Gao@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amdgpu: only set XCC 0 related reg for rlc autoloadLikun Gao1-47/+31
For RLC autoload, only set XCC id 0 related register to trigger rlc autoload, no need to trigger muti-times for muti-xcc. Signed-off-by: Likun Gao <Likun.Gao@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amdgpu: update rlc autoload functionLikun Gao1-7/+41
Update rlc autoload function for gfx v12.1.0 to support muti-XCC firmware autoload. Signed-off-by: Likun Gao <Likun.Gao@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amdgpu: remove hdp flush/invalidation completely for gfx12.1.0/sdma7.1.0Le Ma2-69/+1
Remove the hdp operation and interfaces as the HDP hw does not exist. v2: add checks to see if hdp funcs exists before do hdp flush/invalidation Signed-off-by: Le Ma <le.ma@amd.com> Reviewed-by: Lijo Lazar <lijo.lazar@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amd/include : Update MES v12 API headerShaoyun Liu1-4/+28
1. Add RRMT option support which will be used for remote die register access 2. Update set_hw_resource1 for cooperative mode support 3. Add full_sh_mem_config_data for xnack support v2: squash in compilation fix Signed-off-by: Shaoyun Liu <shaoyun.liu@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amdgpu: Add gfx v12_1_0 to discovery listLikun Gao1-0/+4
Include gfx v12_1_0 in the discovery list for gfx IP blocks Signed-off-by: Likun Gao <Likun.Gao@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Reviewed-by: Mukul Joshi <mukul.joshi@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amdgpu: Add initial support for gfx v12_1Likun Gao3-0/+3978
Add initial support for gfx ip block for gc v12_1. V2: Remove some not applicable bit set. V3: drop unused header (Alex) v4: Fix type on copyright v5: fix num_xcc handling (Alex) Signed-off-by: Likun Gao <Likun.Gao@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Reviewed-by: Mukul Joshi <mukul.joshi@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08amdkfd: record kfd context id into kfd process_infoZhu Lingshan2-0/+6
This commit records the context id of the owner kfd_process into a kfd process_info when create it. Signed-off-by: Zhu Lingshan <lingshan.zhu@amd.com> Reviewed-by: Felix Kuehling <felix.kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08amdkfd: introduce new helper kfd_lookup_process_by_idZhu Lingshan2-0/+22
This commit introduces a new helper function kfd_lookup_process_by_id which can find a kfd process that identified by its context id from the kfd process table Signed-off-by: Zhu Lingshan <lingshan.zhu@amd.com> Reviewed-by: Felix Kuehling <felix.kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08amdkfd: remove test_kqZhu Lingshan1-31/+0
This commit removes test_kq() function becuse it has been marked as unused since 2014 and no other functions calls it. Signed-off-by: Zhu Lingshan <lingshan.zhu@amd.com> Reviewed-by: Felix Kuehling <felix.kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amd/display: correct kernel-doc in dml21_wrapper.hRandy Dunlap1-3/+4
Fix all kernel-doc warnings in dml21_wrapper.h: - add missing @dml_ctx entries (2 places) - fix function prototype typo for dml21_create() - change a blank kernel-doc line to " *" Fixes these warnings: Warning: drivers/gpu/drm/amd/display/dc/dml2_0/dml21/dml21_wrapper.h:30 function parameter 'dml_ctx' not described in 'dml21_create' Warning: drivers/gpu/drm/amd/display/dc/dml2_0/dml21/dml21_wrapper.h:30 expecting prototype for dml2_create(). Prototype was for dml21_create() instead Warning: drivers/gpu/drm/amd/display/dc/dml2_0/dml21/dml21_wrapper.h:55 bad line: Warning: drivers/gpu/drm/amd/display/dc/dml2_0/dml21/dml21_wrapper.h:61 function parameter 'dml_ctx' not described in 'dml21_validate' Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amd/amdgpu: Move enum for VDD boardAsad Kamal1-1/+1
Move AMDGPU_PP_SENSOR_VDDBOARD below already existing members to maintain backward compatibility Signed-off-by: Asad Kamal <asad.kamal@amd.com> Reviewed-by: Lijo Lazar <lijo.lazar@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amdgpu: Don't send warning when close drm obj if drm device has been unplugXiaogang Chen1-2/+2
During amdgpu_gem_object_close amdgpu driver cleans vm mapping for the closing drm obj. If the correspondent adev has been unplug got error -ENODEV code. In this case do not need send warning message. Signed-off-by: Xiaogang Chen <xiaogang.chen@amd.com> Reviewed-by: Kent Russell <kent.russell@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08amdkfd: process pointer of a HIQ should be NULLZhu Lingshan3-20/+0
In kq_initialize, queue->process of a HIQ should be NULL as initialized, because it does not belong to any kfd_process. This commit decommisions the function kfd_get_process() because it can not locate a specific kfd_process among multiple contexts and not any code path calls it after this commit. Signed-off-by: Zhu Lingshan <lingshan.zhu@amd.com> Reviewed-by: Felix Kuehling <felix.kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amdgpu: Make pre_asic_init optionalLijo Lazar8-32/+5
pre_asic_init is not required for all SOCs. Make it optional and remove empty implementations. Signed-off-by: Lijo Lazar <lijo.lazar@amd.com> Reviewed-by: Asad Kamal <asad.kamal@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08amdkfd: remove DIQ supportZhu Lingshan6-78/+5
This commit remove DIQ support because it has been marked as DEPRECATED since 2022 Signed-off-by: Zhu Lingshan <lingshan.zhu@amd.com> Reviewed-by: Felix Kuehling <felix.kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08amdkfd: find kfd_process by filep->private_data in kfd_mmapZhu Lingshan1-4/+7
This commit finds the proper kfd_process by filep->private_data in kfd_mmap, because the function kfd_get_process() can not locate a specific kfd process among multiple contexts. Signed-off-by: Zhu Lingshan <lingshan.zhu@amd.com> Reviewed-by: Felix Kuehling <felix.kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08amdkfd: identify a secondary kfd process by its idZhu Lingshan2-3/+80
This commit introduces a new id field for struct kfd process, which helps identify a kfd process among multiple contexts that all belong to a single user space program. The sysfs entry of a secondary kfd process is placed under the sysfs entry folder of its primary kfd process. The naming format of the sysfs entry of a secondary kfd process is "context_%u" where %u is the context id. Signed-off-by: Zhu Lingshan <lingshan.zhu@amd.com> Reviewed-by: Felix Kuehling <felix.kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08amdkfd: process USERPTR allocation only on the primary kfd processZhu Lingshan1-0/+6
The lifecycle of the primary kfd process is tied to the user space program, all secondary kfd process would be destroyed when fd close. Thus only the primary kfd process should process USERPTR memory allocation. Signed-off-by: Zhu Lingshan <lingshan.zhu@amd.com> Reviewed-by: Felix Kuehling <felix.kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08amdkfd: process svm ioctl only on the primary kfd processZhu Lingshan1-0/+6
svm ioctl should only be processed on the primary kfd process because only the lifecycle of the primary kfd process is tied to the user space applicaiton. Another reason is in virtualization the hypervisor owns the primary kfd process as a privileged one. Signed-off-by: Zhu Lingshan <lingshan.zhu@amd.com> Reviewed-by: Felix Kuehling <felix.kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08amdkfd: destroy kfd secondary contexts through fd closeZhu Lingshan3-20/+31
Life cycle of a KFD secondary context(kfd_process) is tied to the opened file. Therefore this commit destroy a kfd secondary context when close the fd it belonging to. This commit extracts the code removing the kfd_process from the kfd_process_table to a separate function and call it in kfd_process_notifier_release_internal unconditionally. Signed-off-by: Zhu Lingshan <lingshan.zhu@amd.com> Reviewed-by: Felix Kuehling <felix.kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08amdkfd: Introduce kfd_create_process_sysfs as a separate functionZhu Lingshan2-25/+42
KFD creates sysfs entries for a kfd_process in function kfd_create_process when creating it. This commit extracts the code creating sysfs entries to a separate function because it would be invoked in other code path like creating secondary kfd contexts (kfd_process). Signed-off-by: Zhu Lingshan <lingshan.zhu@amd.com> Reviewed-by: Felix Kuehling <felix.kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amd/display: Promote DC to 3.2.361Taimur Hassan1-1/+1
This version brings along the following updates: - Fix wrong x_pos and y_pos for cursor offload. - Fix Smart Power OLED not working after S4. - Fix double cursor when switching between hw and sw cursor. - Add configurable SPL namespace prefix. - Add register definitions in dcn_hubbub_registers. - Add additional info from DML. - Add dc interface for query QoS information. - Refactor HPD to increase flexibility. - Remove unused encoder types. Reviewed-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Taimur Hassan <Syed.Hassan@amd.com> Signed-off-by: Roman Li <roman.li@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amd/display: Add configurable SPL namespace prefixNavid Assadian15-301/+328
[WHY] SPL is a shared library that is used both in kernel and userspace. When multiple libraries use SPL as statically linked, namespace collision occur. [HOW] Create a configurable namespace prefix. Add the prefix to all the public functions of the library to distinguish between the SPL functions in each library. Reviewed-by: Samson Tam <samson.tam@amd.com> Signed-off-by: Navid Assadian <Navid.Assadian@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amd/display: Reset pipe mask at beginning of cursor offloadNicholas Kazlauskas1-0/+1
[Why] Double cursor when switching between hardware and software cursor when dragging an MPO window can occur with cursor offload enabled. The abort cursor update in the full programming path is responsible for this issue since it does not reset the pipe mask when attempting to submit an empty update. The firmware programs the payload as requested which may contain invalid or stale data for the previously enabled pipes, resulting in an offset or double cursor. [How] For performance we don't want to memset the entire payload structure due to its size, so just reset the pipe mask which will indicate the payload data is empty. Reviewed-by: Dillon Varone <dillon.varone@amd.com> Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Signed-off-by: Roman Li <roman.li@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amd/display: add register definitions in dcn_hubbub_registersCharlene Liu1-1/+5
Reviewed-by: Roman Li <roman.li@amd.com> Signed-off-by: Charlene Liu <Charlene.Liu@amd.com> Signed-off-by: Roman Li <roman.li@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amd/display: Correct FIXED_VS Link Rate Toggle ConditionJing Zhou1-1/+1
[WHY&HOW] The condition is only perform toggle if FIXED_VS LTTPR reports no IEEE OUI. The literal "\x0,\x0,\x0" contains commas changes the bytes being compared to {0x00,0x2C,0X00}. The correct literal should be "\x00\x00\x00" without commas. Reviewed-by: Charlene Liu <charlene.liu@amd.com> Reviewed-by: Wenjing Liu <wenjing.liu@amd.com> Signed-off-by: Jing Zhou <Jing.Zhou@amd.com> Signed-off-by: Roman Li <roman.li@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amd/display: Add additional info from DMLNevenko Stupar2-11/+14
for DMU when applicable on future platforms. Reviewed-by: Alvin Lee <alvin.lee2@amd.com> Signed-off-by: Nevenko Stupar <Nevenko.Stupar@amd.com> Signed-off-by: Roman Li <roman.li@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amd/display: Guard FAMS2 configuration updatesDillon Varone1-2/+5
[WHY&HOW] If DMCUB is not initialized or FAMS2 is not supported, the interface should not be called. Reviewed-by: Sridevi Arvindekar <sridevi.arvindekar@amd.com> Signed-off-by: Dillon Varone <Dillon.Varone@amd.com> Signed-off-by: Roman Li <roman.li@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08drm/amd/display: add dc interface for query QoS informationWenjing Liu3-0/+97
[why] Add support for retrieving Quality of Service (QoS) metrics from dc to enable performance analysis and bottleneck identification. This provides benchmark tools with real-time bandwidth and latency measurements from hardware performance counters, helping diagnose display system performance issues. [how] - Add dc_get_qos_info() function to DC layer for unified QoS data retrieval - Implement hardware sequencer interface with function pointers for QoS measurements - Integrate QoS metrics: peak/average bandwidth (Mbps) and max/average latency (ns) Reviewed-by: Aric Cyr <aric.cyr@amd.com> Signed-off-by: Wenjing Liu <wenjing.liu@amd.com> Signed-off-by: Roman Li <roman.li@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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