Re: [PATCH 09/12] tests/amdgpu: add atomic_mem cp_packet to verify the secure buffer

On Fri, Nov 15, 2019 at 11:34:52AM +0800, Liu, Aaron wrote: > 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_

Re: [PATCH 09/12] tests/amdgpu: add atomic_mem cp_packet to verify the secure buffer

On Fri, Nov 15, 2019 at 11:34:52AM +0800, Liu, Aaron wrote: > 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_

[PATCH 09/12] tests/amdgpu: add atomic_mem cp_packet to verify the secure buffer

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