drm/amdgpu: create PTL sysfs after XGMI reset-on-init restore

Create PTL sysfs in xgmi_reset_on_init restore path for MINIMAL_XGMI

Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Reviewed-by: Yifan

drm/amdgpu: create PTL sysfs after XGMI reset-on-init restore

Create PTL sysfs in xgmi_reset_on_init restore path for MINIMAL_XGMI

Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Reviewed-by: Yifan Zhang <yifan1.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

show more ...

drm/amdgpu: add amdgpu.ptl module parameter for PTL control

Add a new kernel module parameter 'amdgpu.ptl' to allow
users to enable or disable PTL feature at driver loading time.

Parameter values:

drm/amdgpu: add amdgpu.ptl module parameter for PTL control

Add a new kernel module parameter 'amdgpu.ptl' to allow
users to enable or disable PTL feature at driver loading time.

Parameter values:
*) 0 or -1: disable PTL (default)
*) 1: enable PTL
*) 2: permanently disable PTL

Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Reviewed-by: Yifan Zhang <yifan1.zhang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

show more ...

drm/amdgpu: Track PTL disable requests by source

Use a bitmap to track PTL disable requests from sysfs and profiler.
PTL is only re-enabled once all sources have released their disable
requests, avo

drm/amdgpu: Track PTL disable requests by source

Use a bitmap to track PTL disable requests from sysfs and profiler.
PTL is only re-enabled once all sources have released their disable
requests, avoiding premature enablement.

Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Reviewed-by: Yifan Zhang <yifan1.zhang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

show more ...

drm/amdkfd: Add PTL control IOCTL Option and unify refcount logic

Introduce a new IOCTL option to allow userspace explicit control over
the Peak Tops Limiter (PTL) state for profiling

Link: https:/

drm/amdkfd: Add PTL control IOCTL Option and unify refcount logic

Introduce a new IOCTL option to allow userspace explicit control over
the Peak Tops Limiter (PTL) state for profiling

Link: https://github.com/ROCm/rocm-systems/tree/develop/projects/rocprofiler-sdk
Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Reviewed-by: Yifan Zhang <yifan1.zhang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

show more ...

drm/amdgpu: add sysfs for Peak Tops Limiter (PTL)

Add per-GPU sysfs files under /sys/class/drm/cardX/device/ptl to
control the Peak Tops Limiter (PTL) feature. Exposes ptl_enable
(enable/disable PTL

drm/amdgpu: add sysfs for Peak Tops Limiter (PTL)

Add per-GPU sysfs files under /sys/class/drm/cardX/device/ptl to
control the Peak Tops Limiter (PTL) feature. Exposes ptl_enable
(enable/disable PTL), ptl_format (set/query preferred formats),
and ptl_supported_formats (list supported formats)

Example usage
-------------
Query PTL status:
`cat /sys/class/drm/card1/device/ptl/ptl_enable`

Enable PTL:
`sudo bash -c "echo 1 > /sys/class/drm/card1/device/ptl/ptl_enable"`

Disable PTL:
`sudo bash -c "echo 0 > /sys/class/drm/card1/device/ptl/ptl_enable"`

Set PTL preferred formats:
`sudo bash -c "echo I8,F32 > /sys/class/drm/card1/device/ptl/ptl_format"`

Query supported formats:
`cat /sys/class/drm/card1/device/ptl/ptl_supported_formats`

v3 changes:
* move N/A to previous format in format show(Alex)
* fix format check for format store(Alex)
* drop the ptl declarations into amdgpu_ptl.h(Alex)

v2 changes:
* add usage commands in commit info (Alex)
* move amdgpu_ptl_fmt into kgd_kfd_interface.h (Alex)

Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Reviewed-by: Yifan Zhang <yifan1.zhang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

show more ...

drm/amdgpu: add psp interfaces for peak tops limiter driver

Introduce a Peak Tops Limiter (PTL) driver that dynamically caps
engine frequency to ensure delivered TOPS never exceeds a defined
TOPS_li

drm/amdgpu: add psp interfaces for peak tops limiter driver

Introduce a Peak Tops Limiter (PTL) driver that dynamically caps
engine frequency to ensure delivered TOPS never exceeds a defined
TOPS_limit. This initial implementation provides core data structures
and kernel-space interfaces (set/get, enable/disable) to manage PTL state.

PTL performs a firmware handshake to initialize its state and update
predefined format types. It supports updating these format types at
runtime while user-space tools automatically switch PTL state, and
also allows explicitly switching PTL state via newly added commands.

Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

show more ...