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misc: mods: Add ioctl to pass messages to tz app

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Summary: This change adds support in mods kernel
driver to send messages to Trusty in order to
run tests trust zone side

Signed-off-by: Ellis Roberts <ellisr@nvidia.com>
Change-Id: I5cd0a1dcc4d1ac5543df5fb3ebec4427c1145e10
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2567469
Tested-by: Rohith Talluri <sitalluri@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: Chris Dragan <kdragan@nvidia.com>
Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com>
Reviewed-by: Stephen Wolfe <swolfe@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Ellis
2021-05-28 13:24:32 -07:00
committed by Laxman Dewangan
parent df0985a449
commit 1658071414
5 changed files with 70 additions and 0 deletions
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1
drivers/misc/mods/Makefile
View File

@@ -2,6 +2,7 @@ obj-$(CONFIG_MODS) := mods.o
mods-y := mods_krnl.o
mods-y += mods_mem.o
mods-y += mods_irq.o
mods-$(CONFIG_ARCH_TEGRA) += mods_tz.o
mods-$(CONFIG_COMMON_CLK) += mods_clock.o
mods-$(CONFIG_ARCH_TEGRA) += mods_tegraprod.o
mods-$(CONFIG_ARCH_TEGRA_19x_SOC) += mods_ras.o

3
drivers/misc/mods/mods_internal.h
View File

@@ -693,6 +693,9 @@ int esc_mods_tegra_prod_set_prod_by_name(struct mods_client *client,
int esc_mods_tegra_prod_set_prod_exact(struct mods_client *client,
struct MODS_TEGRA_PROD_SET_TUPLE *tuple);
/* trustzone app call */
int esc_mods_send_trustzone_msg(struct mods_client *client,
struct MODS_TZ_PARAMS *p);
#endif
#ifdef CONFIG_DEBUG_FS

5
drivers/misc/mods/mods_krnl.c
View File

@@ -2541,6 +2541,11 @@ static long mods_krnl_ioctl(struct file *fp,
esc_mods_tegra_prod_iterate_dt,
MODS_TEGRA_PROD_ITERATOR);
break;
case MODS_ESC_SEND_TZ_MSG:
MODS_IOCTL(MODS_ESC_SEND_TZ_MSG,
esc_mods_send_trustzone_msg, MODS_TZ_PARAMS);
break;
#endif
case MODS_ESC_ACQUIRE_ACCESS_TOKEN:

45
drivers/misc/mods/mods_tz.c Normal file
View File

@@ -0,0 +1,45 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2021, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*/
#include "mods_internal.h"
#include <linux/trusty/trusty_ipc.h>
#define MODS_PORT "com.nvidia.srv.mods"
int esc_mods_send_trustzone_msg(struct mods_client *client,
struct MODS_TZ_PARAMS *p)
{
int ret;
void *chan_ctx = NULL;
ret = te_open_trusted_session(MODS_PORT, &chan_ctx);
if (ret < 0) {
cl_error("Couldn't open connection mods service\n");
goto error;
}
ret = te_launch_trusted_oper(p->buf, p->buf_size, p->cmd, chan_ctx);
if (ret < 0) {
cl_error("Trusted operation failed\n");
goto error;
}
error:
p->status = ret;
if (chan_ctx)
te_close_trusted_session(chan_ctx);
return ret;
}

16
include/uapi/misc/mods.h
View File

@@ -1780,6 +1780,21 @@ struct MODS_IOMMU_DMA_MAP_MEMORY {
__u64 physical_address;
};
#define MAX_TZ_BUFFER_SIZE 512
/* Used by MODS_ESC_SEND_TZ_MSG.
*
* Available only on Tegra.
*/
struct MODS_TZ_PARAMS {
/* IN */
__u8 buf[MAX_TZ_BUFFER_SIZE];
__u32 buf_size;
__u32 cmd;
/* OUT */
int status;
};
#define MODS_IOMMU_MAP_CONTIGUOUS 1
#pragma pack(pop)
@@ -1979,5 +1994,6 @@ struct MODS_IOMMU_DMA_MAP_MEMORY {
#define MODS_ESC_MODS_GET_DRIVER_STATS MODSIO(R, 135, MODS_GET_DRIVER_STATS)
#define MODS_ESC_BPMP_SET_PCIE_STATE MODSIO(W, 136, MODS_SET_PCIE_STATE)
#define MODS_ESC_BPMP_INIT_PCIE_EP_PLL MODSIO(W, 137, MODS_INIT_PCIE_EP_PLL)
#define MODS_ESC_SEND_TZ_MSG MODSIO(WR, 139, MODS_TZ_PARAMS)
#endif /* _UAPI_MODS_H_ */