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tee: add api tee_protect_mem_by_type [1/1]

Browse Source 
PD#SWPL-16829

Problem:
need API to protect mem for gpu and so on

Solution:
add api tee_protect_mem_by_type

Verify:
Android Q + TL1

Test: manual
wq
Signed-off-by: Pengguang Zhu <pengguang.zhu@amlogic.com>

Change-Id: Ibf420e1d4845c1020ae2ff91629f6e31a32a7bc3
Signed-off-by: changqing.gao <changqing.gao@amlogic.com>
This commit is contained in:
Pengguang Zhu
2019-12-03 15:15:10 +08:00
committed by Chris
parent 1c1328208a
commit 603cf6dccd
2 changed files with 36 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
drivers/amlogic/tee/tee.c
View File

@@ -63,6 +63,15 @@ static int disable_flag;
#define TEE_SMC_FUNCID_UNPROTECT_TVP_MEM 0xE021
#define TEE_SMC_UNPROTECT_TVP_MEM \
TEE_SMC_FAST_CALL_VAL(TEE_SMC_FUNCID_UNPROTECT_TVP_MEM)
#define TEE_SMC_FUNCID_PROTECT_MEM_BY_TYPE 0xE023
#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)
static struct class *tee_sys_class;
struct tee_smc_calls_revision_result {
@@ -204,6 +213,24 @@ void tee_unprotect_tvp_mem(uint32_t handle)
}
EXPORT_SYMBOL(tee_unprotect_tvp_mem);
uint32_t tee_protect_mem_by_type(uint32_t type,
uint32_t start, uint32_t size,
uint32_t *handle)
{
struct arm_smccc_res res;
if (!handle)
return 0xFFFF0006;
arm_smccc_smc(TEE_SMC_PROTECT_MEM_BY_TYPE,
type, start, size, 0, 0, 0, 0, &res);
*handle = res.a1;
return res.a0;
}
EXPORT_SYMBOL(tee_protect_mem_by_type);
int tee_create_sysfs(void)
{
int ret;

9
include/linux/amlogic/tee.h
View File

@@ -18,6 +18,12 @@
#ifndef __TEE_H__
#define __TEE_H__
#define TEE_MEM_TYPE_GPU 0x6
#define TEE_MEM_TYPE_VDIN 0x7
#define TEE_MEM_TYPE_ENCODER 0x8
#define TEE_MEM_TYPE_GE2D 0x9
#define TEE_MEM_TYPE_DEMUX 0xa
extern bool tee_enabled(void);
extern int is_secload_get(void);
extern int tee_load_video_fw(uint32_t index, uint32_t vdec);
@@ -25,5 +31,8 @@ extern int tee_load_video_fw_swap(uint32_t index, uint32_t vdec, bool is_swap);
extern uint32_t tee_protect_tvp_mem(uint32_t start, uint32_t size,
uint32_t *handle);
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);
#endif /* __TEE_H__ */