linux.git/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.h, branch v7.2-rc2 Linux kernel source tree drm/amdgpu: In GFX12.1 CU is same as WGP 2026-04-24T14:57:16+00:00 Harish Kasiviswanathan Harish.Kasiviswanathan@amd.com 2026-02-26T15:34:55+00:00 1e5d97a5c59a2f2be97cc3cde0e2fe18781493da Fix this for current ip discovery table. v2: Move the change to gfx12 file v3: Change only for the current version of ip discovery table v4: Squash in build fixes Signed-off-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com> Reviewed-by: Felix Kuehling <felix.kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
Fix this for current ip discovery table.

v2: Move the change to gfx12 file
v3: Change only for the current version of ip discovery table
v4: Squash in build fixes

Signed-off-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdgpu: Use stack variable to fetch nps info 2026-03-23T18:21:34+00:00 Lijo Lazar lijo.lazar@amd.com 2026-02-23T10:58:22+00:00 896ffa9847c3d00895fa7f6da5b7e2c141189c9b Instead of a dynamic allocation, use stack variable and let the caller pass the maximum ranges that can be held in the buffer. 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> 
Instead of a dynamic allocation, use stack variable and let the caller
pass the maximum ranges that can be held in the buffer.

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>
drm/amdgpu: New interface to get IP discovery binary v3 2026-03-11T17:58:07+00:00 Hawking Zhang Hawking.Zhang@amd.com 2026-02-09T20:08:54+00:00 01bdc7e219c4e10166a2eb4642e9e55af33b8ff5 Implement a driver path to read the IP discovery binary offset and size from DRIVER_SCRATCH registers BIOS signals usage by setting a feature flag that instructs the driver to use this method. Otherwise, fallback to legacy approach. v2: Simplify discovery offset/size retrieval in get_tmr_info v3: Update get_tmr_info to cover discovery offset and size retrieval for both bare-metal and sriov Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com> Reviewed-by: Likun Gao <Likun.Gao@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
Implement a driver path to read the IP discovery
binary offset and size from DRIVER_SCRATCH registers
BIOS signals usage by setting a feature flag that
instructs the driver to use this method. Otherwise,
fallback to legacy approach.

v2: Simplify discovery offset/size retrieval in
get_tmr_info

v3: Update get_tmr_info to cover discovery offset
and size retrieval for both bare-metal and sriov

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdgpu: include ip discovery data in devcoredump 2026-03-06T21:33:32+00:00 Pierre-Eric Pelloux-Prayer pierre-eric.pelloux-prayer@amd.com 2025-12-02T13:27:24+00:00 e81eff80aad6c04ff1d7c1bf6412de17e717bd76 This is the best way to describe the GPU to a tool loading the devcoredump. Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
This is the best way to describe the GPU to a tool loading
the devcoredump.

Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdgpu: Reserve discovery TMR only if needed 2025-10-13T18:14:36+00:00 Lijo Lazar lijo.lazar@amd.com 2025-10-10T11:53:33+00:00 071bba962456a46b261fcefe26bd533cbc059ea2 For legacy SOCs, discovery binary is sideloaded. Instead of checking for binary blob, use a flag to determine if discovery region needs to be reserved. Signed-off-by: Lijo Lazar <lijo.lazar@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
For legacy SOCs, discovery binary is sideloaded. Instead of checking for
binary blob, use a flag to determine if discovery region needs to be
reserved.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdgpu: Add amdgpu_discovery_info 2025-10-13T18:14:35+00:00 Lijo Lazar lijo.lazar@amd.com 2025-10-10T11:42:52+00:00 9e2096baab9addedde324f406d3ec9166e70d15b Add amdgpu_discovery_info structure to keep all discovery related information. Signed-off-by: Lijo Lazar <lijo.lazar@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
Add amdgpu_discovery_info structure to keep all discovery related
information.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdgpu: Add option to refresh NPS data 2024-10-01T21:40:07+00:00 Lijo Lazar lijo.lazar@amd.com 2024-09-18T10:27:08+00:00 fcd91a95df7ff5965d8b0532b8799eaf3e58633d In certain use cases, NPS data needs to be refreshed again from discovery table. Add API parameter to refresh NPS data from discovery table. Signed-off-by: Lijo Lazar <lijo.lazar@amd.com> Reviewed-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
In certain use cases, NPS data needs to be refreshed again from
discovery table. Add API parameter to refresh NPS data from discovery
table.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdgpu: Use NPS ranges from discovery table 2024-05-17T21:40:36+00:00 Lijo Lazar lijo.lazar@amd.com 2024-05-09T11:32:33+00:00 b194d21b9bcc15b50df1bc3ff7428e51c2918a6f Add GMC API to fetch NPS range information from discovery table. Use NPS range information in GMC 9.4.3 SOCs when available, otherwise fallback to software method. Signed-off-by: Lijo Lazar <lijo.lazar@amd.com> Reviewed-by: Le Ma <le.ma@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
Add GMC API to fetch NPS range information from discovery table. Use NPS
range information in GMC 9.4.3 SOCs when available, otherwise fallback
to software method.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Le Ma <le.ma@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdgpu: Increase IP discovery region size 2023-10-13T14:59:16+00:00 Lijo Lazar lijo.lazar@amd.com 2023-10-06T04:57:20+00:00 558fcb7d1157a902c5ca880289e78d121fc3a484 IP discovery region has increased to > 8K on some SOCs.Maximum reserve size is upto 12K, but not used. For now increase to 10K. Signed-off-by: Lijo Lazar <lijo.lazar@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
IP discovery region has increased to > 8K on some SOCs.Maximum reserve
size is upto 12K, but not used. For now increase to 10K.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdgpu: increase DISCOVERY_TMR_SIZE 2023-06-09T13:47:43+00:00 Le Ma le.ma@amd.com 2022-09-06T07:22:44+00:00 c3729997a23e8955f017b6286bd6c73b386fbe49 New ip_discovery binary size is increased. 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> 
New ip_discovery binary size is increased.

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>