mirror of
https://gitlab.freedesktop.org/mesa/drm.git
synced 2026-06-03 18:48:22 +02:00
5de99b1fa6
Secure buffer is only able to be read with trusted ip block. So we need use GFX ip to read it back instead of CPU. Steps: 1. use write_data packet to write 0xdeadbeaf to secure buffer, 2. use atmoic_mem packet and ATOMIC_CMPSWAP_RTN_32 opcode to compare the cmp_data(0xdeadbeaf) to the written data which has been encrypted. If the result is equal, then overwrite the src_data(0x12345678) to the secure buffer and return directly. Otherwise loop again until gfx timeout and the secure buffer data unchanged. Acked-by: Huang Rui <ray.huang@amd.com> Acked-by: Leo Liu <leo.liu@amd.com> Signed-off-by: Aaron Liu <aaron.liu@amd.com> Reviewed-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> |
||
|---|---|---|
| .. | ||
| amdgpu | ||
| etnaviv | ||
| exynos | ||
| kms | ||
| kmstest | ||
| modeprint | ||
| modetest | ||
| nouveau | ||
| proptest | ||
| radeon | ||
| tegra | ||
| ttmtest | ||
| util | ||
| vbltest | ||
| Android.mk | ||
| drmdevice.c | ||
| drmsl.c | ||
| hash.c | ||
| meson.build | ||