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smcinvoke: Add explicit cache flush during CB req from TZ

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Change: During Callback request from TZ, out and in buffers
needed explicit cache coherency to be performed.

Change-Id: I2b2aee7dce3d75dc07576079f4b0d268488c5951
Signed-off-by: Nitesh Gupta <quic_nitegupt@quicinc.com>
This commit is contained in:
Nitesh Gupta 2022-04-22 16:38:45 +05:30 • committed by Gerrit - the friendly Code Review server
commit 5b4fd8b686
1 changed files with 7 additions and 0 deletions
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7
drivers/soc/qcom/smcinvoke.c
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@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2016-2021, The Linux Foundation. All rights reserved.
* Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
*/
#define pr_fmt(fmt) "smcinvoke: %s: " fmt, __func__
@ -1042,8 +1043,14 @@ static int invoke_cmd_handler(int cmd, phys_addr_t in_paddr, size_t in_buf_len,
break;
case SMCINVOKE_CB_RSP_CMD:
if (legacy_smc_call)
qtee_shmbridge_flush_shm_buf(out_shm);
ret = qcom_scm_invoke_callback_response(virt_to_phys(out_buf), out_buf_len,
result, response_type, data);
if (legacy_smc_call) {
qtee_shmbridge_inv_shm_buf(in_shm);
qtee_shmbridge_inv_shm_buf(out_shm);
}
break;
default: