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securemsm-kernel : Add new functionality in HLOS for TZ to sleep for certain

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amount of time.
This commit is contained in:
Sonal Aggarwal
2022-02-21 15:45:54 +05:30
parent a82a44dc57
commit c1f17b2adc
2 changed files with 23 additions and 2 deletions
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22
smcinvoke/smcinvoke.c
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@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only // SPDX-License-Identifier: GPL-2.0-only
/* /*
* Copyright (c) 2016-2021, The Linux Foundation. All rights reserved. * Copyright (c) 2016-2022, The Linux Foundation. All rights reserved.
*/ */
#define pr_fmt(fmt) "smcinvoke: %s: " fmt, __func__ #define pr_fmt(fmt) "smcinvoke: %s: " fmt, __func__
@@ -950,6 +950,23 @@ out:
return ret; return ret;
} }
static int32_t smcinvoke_sleep(void *buf, size_t buf_len)
{
struct smcinvoke_tzcb_req *msg = buf;
uint32_t sleepTimeMs_val = 0;
if (msg->hdr.counts != OBJECT_COUNTS_PACK(1, 0, 0, 0) ||
(buf_len - msg->args[0].b.offset < msg->args[0].b.size)) {
pr_err("Invalid counts received for sleeping in hlos\n");
return OBJECT_ERROR_INVALID;
}
/* Time in miliseconds is expected from tz */
sleepTimeMs_val = *((uint32_t *)(buf + msg->args[0].b.offset));
msleep(sleepTimeMs_val);
return OBJECT_OK;
}
static void process_kernel_obj(void *buf, size_t buf_len) static void process_kernel_obj(void *buf, size_t buf_len)
{ {
struct smcinvoke_tzcb_req *cb_req = buf; struct smcinvoke_tzcb_req *cb_req = buf;
@@ -961,6 +978,9 @@ static void process_kernel_obj(void *buf, size_t buf_len)
case OBJECT_OP_YIELD: case OBJECT_OP_YIELD:
cb_req->result = OBJECT_OK; cb_req->result = OBJECT_OK;
break; break;
case OBJECT_OP_SLEEP:
cb_req->result = smcinvoke_sleep(buf, buf_len);
break;
default: default:
pr_err(" invalid operation for tz kernel object\n"); pr_err(" invalid operation for tz kernel object\n");
cb_req->result = OBJECT_ERROR_INVALID; cb_req->result = OBJECT_ERROR_INVALID;

3
smcinvoke/smcinvoke_object.h
View File

@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0-only */ /* SPDX-License-Identifier: GPL-2.0-only */
/* /*
* Copyright (c) 2016-2021, The Linux Foundation. All rights reserved. * Copyright (c) 2016-2022, The Linux Foundation. All rights reserved.
*/ */
#ifndef __SMCINVOKE_OBJECT_H #ifndef __SMCINVOKE_OBJECT_H
#define __SMCINVOKE_OBJECT_H #define __SMCINVOKE_OBJECT_H
@@ -20,6 +20,7 @@
#define OBJECT_OP_RETAIN (OBJECT_OP_METHOD_MASK - 1) #define OBJECT_OP_RETAIN (OBJECT_OP_METHOD_MASK - 1)
#define OBJECT_OP_MAP_REGION 0 #define OBJECT_OP_MAP_REGION 0
#define OBJECT_OP_YIELD 1 #define OBJECT_OP_YIELD 1
#define OBJECT_OP_SLEEP 2
#define OBJECT_COUNTS_MAX_BI 0xF #define OBJECT_COUNTS_MAX_BI 0xF
#define OBJECT_COUNTS_MAX_BO 0xF #define OBJECT_COUNTS_MAX_BO 0xF