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tee: add api tee_unprotect_mem [1/1]

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PD#TV-17133

Problem:
need API to unprotect mem for codec and so on

Solution:
add api tee_unprotect_mem

Verify:
Android Q + TM2

Test: manual
Change-Id: I9dc205e209988297724c9461254c028e779ae1eb
Signed-off-by: Pengguang Zhu <pengguang.zhu@amlogic.com>
This commit is contained in:
Pengguang Zhu
2020-04-17 15:44:17 +08:00
committed by Chris
parent 603cf6dccd
commit e688df6bfa
2 changed files with 44 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
drivers/amlogic/tee/tee.c
View File

@@ -52,7 +52,11 @@ static int disable_flag;
#define TEE_SMC_CALL_GET_OS_REVISION \
TEE_SMC_FAST_CALL_VAL(TEE_SMC_FUNCID_GET_OS_REVISION)
#define TEE_SMC_FUNCID_LOAD_VIDEO_FW 15
#define TEE_SMC_FUNCID_CONFIG_DEVICE_SECURE 14
#define TEE_SMC_CONFIG_DEVICE_SECURE \
TEE_SMC_FAST_CALL_VAL(TEE_SMC_FUNCID_CONFIG_DEVICE_SECURE)
#define TEE_SMC_FUNCID_LOAD_VIDEO_FW 15
#define TEE_SMC_LOAD_VIDEO_FW \
TEE_SMC_FAST_CALL_VAL(TEE_SMC_FUNCID_LOAD_VIDEO_FW)
@@ -68,9 +72,9 @@ static int disable_flag;
#define TEE_SMC_PROTECT_MEM_BY_TYPE \
TEE_SMC_FAST_CALL_VAL(TEE_SMC_FUNCID_PROTECT_MEM_BY_TYPE)
#define TEE_SMC_FUNCID_UNPROTECT_MEM_BY_TYPE 0xE024
#define TEE_SMC_UNPROTECT_MEM_BY_TYPE \
TEE_SMC_FAST_CALL_VAL(TEE_SMC_FUNCID_UNPROTECT_MEM_BY_TYPE)
#define TEE_SMC_FUNCID_UNPROTECT_MEM 0xE024
#define TEE_SMC_UNPROTECT_MEM \
TEE_SMC_FAST_CALL_VAL(TEE_SMC_FUNCID_UNPROTECT_MEM)
static struct class *tee_sys_class;
@@ -231,6 +235,26 @@ uint32_t tee_protect_mem_by_type(uint32_t type,
}
EXPORT_SYMBOL(tee_protect_mem_by_type);
void tee_unprotect_mem(uint32_t handle)
{
struct arm_smccc_res res;
arm_smccc_smc(TEE_SMC_UNPROTECT_MEM,
handle, 0, 0, 0, 0, 0, 0, &res);
}
EXPORT_SYMBOL(tee_unprotect_mem);
int tee_config_device_state(int dev_id, int secure)
{
struct arm_smccc_res res;
arm_smccc_smc(TEE_SMC_CONFIG_DEVICE_SECURE,
dev_id, secure, 0, 0, 0, 0, 0, &res);
return res.a0;
}
EXPORT_SYMBOL(tee_config_device_state);
int tee_create_sysfs(void)
{
int ret;

17
include/linux/amlogic/tee.h
View File

@@ -18,12 +18,23 @@
#ifndef __TEE_H__
#define __TEE_H__
/* memory type used by tee_protect_mem_by_type() */
#define TEE_MEM_TYPE_GPU 0x6
#define TEE_MEM_TYPE_VDIN 0x7
#define TEE_MEM_TYPE_ENCODER 0x8
#define TEE_MEM_TYPE_HCODEC 0x8
#define TEE_MEM_TYPE_GE2D 0x9
#define TEE_MEM_TYPE_DEMUX 0xa
/* device ID used by tee_config_device_state() */
#define DMC_DEV_ID_GPU 1
#define DMC_DEV_ID_HEVC 4
#define DMC_DEV_ID_PARSER 7
#define DMC_DEV_ID_VPU 8
#define DMC_DEV_ID_VDIN 9
#define DMC_DEV_ID_VDEC 13
#define DMC_DEV_ID_HCODEC 14
#define DMC_DEV_ID_GE2D 15
extern bool tee_enabled(void);
extern int is_secload_get(void);
extern int tee_load_video_fw(uint32_t index, uint32_t vdec);
@@ -34,5 +45,9 @@ extern void tee_unprotect_tvp_mem(uint32_t handle);
extern uint32_t tee_protect_mem_by_type(uint32_t type,
uint32_t start, uint32_t size,
uint32_t *handle);
extern void tee_unprotect_mem(uint32_t handle);
extern int tee_config_device_state(int dev_id, int secure);
#endif /* __TEE_H__ */