From: Jeshwanth Kumar N K <JESHWANTHKUMAR.NK@xxxxxxx> At present, the shared memory for TEE ring buffer, command buffer and data buffer is allocated using get_free_pages(). The driver shares the physical address of these buffers with PSP so that it can be mapped by the Trusted OS. In this patch series we have replaced get_free_pages() with dma_alloc_coherent() to allocate shared memory to cleanup the existing allocation method. Rijo Thomas (3): crypto: ccp - Add function to allocate and free memory using DMA APIs crypto: ccp - Use psp_tee_alloc_buffer() and psp_tee_free_buffer() tee: amdtee: Use psp_tee_alloc_buffer() and psp_tee_free_buffer() drivers/crypto/ccp/psp-dev.c | 3 + drivers/crypto/ccp/tee-dev.c | 119 ++++++++++++++++++---------- drivers/crypto/ccp/tee-dev.h | 11 +-- drivers/tee/amdtee/amdtee_private.h | 18 ++--- drivers/tee/amdtee/call.c | 74 ++++++++--------- drivers/tee/amdtee/core.c | 72 ++++++++++------- drivers/tee/amdtee/shm_pool.c | 21 ++--- include/linux/psp-tee.h | 47 +++++++++++ 8 files changed, 221 insertions(+), 144 deletions(-) -- 2.25.1
