drm/amdgpu: Add UALink GART helpers for NPA address access

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Add helpers to insert and remove NPA addresses in the GART page table
without a TTM buffer object, allowing the local SDMA engine to reach
remote GPU ring buffers, write pointer pages, and doorbell addresses.

v2: fix 32 bit build (Alex)

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Philip Yang 2026-03-25 13:37:10 -04:00 • committed by Alex Deucher

parent eb4ab3b698

commit d9fcb49399

1 changed files with 75 additions and 0 deletions

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drivers/gpu/drm/amd/amdgpu/amdgpu_ualink.c

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