| From: |
| jeshwank <JESHWANTHKUMAR.NK-AT-amd.com> |
| To: |
| <thomas.lendacky-AT-amd.com>, <john.allen-AT-amd.com>, <herbert-AT-gondor.apana.org.au>, <davem-AT-davemloft.net>, <jens.wiklander-AT-linaro.org>, <sumit.garg-AT-linaro.org>, <jarkko.nikula-AT-linux.intel.com>, <mario.limonciello-AT-amd.com>, <linux-crypto-AT-vger.kernel.org>, <linux-kernel-AT-vger.kernel.org>, <op-tee-AT-lists.trustedfirmware.org> |
| Subject: |
| [PATCH 0/3] Introduce DMA APIs to allocate and free TEE shared memory |
| Date: |
| Wed, 25 Oct 2023 12:26:57 +0530 |
| Message-ID: |
| <20231025065700.1556152-1-JESHWANTHKUMAR.NK@amd.com> |
| Cc: |
| <Mythri.Pandeshwarakrishna-AT-amd.com>, <Devaraj.Rangasamy-AT-amd.com>, <Rijo-john.Thomas-AT-amd.com>, <nimesh.easow-AT-amd.com>, <JESHWANTHKUMAR.NK-AT-amd.com> |
| Archive-link: |
| Article |
From: Jeshwanth Kumar N K <JESHWANTHKUMAR.NK@amd.com>
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
