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Merge "scm: enable audio memory api"

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qctecmdr 2021-03-08 03:05:23 -08:00 • committed by Gerrit - the friendly Code Review server
commit 983d9309f2
4 changed files with 41 additions and 0 deletions
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29
drivers/firmware/qcom_scm-smc.c
View file

@ -16,6 +16,7 @@
#include <linux/qtee_shmbridge.h>
#include <soc/qcom/qseecom_scm.h>
#include <soc/qcom/qseecomi.h>
#include "qcom_scm.h"
@ -2347,6 +2348,34 @@ int __qcom_scm_invoke_callback_response(struct device *dev, phys_addr_t out_buf,
return ret;
}
#define TZ_SVC_MEMORY_PROTECTION 12 /* Memory protection service. */
#define TZ_MPU_LOCK_AUDIO_BUFFER \
TZ_SYSCALL_CREATE_SMC_ID(TZ_OWNER_SIP, TZ_SVC_MEMORY_PROTECTION, 0x06)
#define TZ_MPU_LOCK_AUDIO_BUFFER_PARAM_ID \
TZ_SYSCALL_CREATE_PARAM_ID_2( \
TZ_SYSCALL_PARAM_TYPE_VAL, TZ_SYSCALL_PARAM_TYPE_VAL)
int __qcom_scm_mem_protect_audio(struct device *dev, phys_addr_t paddr,
size_t size)
{
int ret;
struct qcom_scm_desc desc = {
.svc = TZ_SVC_MEMORY_PROTECTION,
.cmd = 0x6,
.owner = TZ_OWNER_SIP,
};
desc.args[0] = paddr;
desc.args[1] = size;
desc.arginfo = QCOM_SCM_ARGS(2);
ret = qcom_scm_call(dev, &desc);
return ret;
}
int __qcom_scm_qseecom_do(struct device *dev, u32 cmd_id, struct scm_desc *desc,
bool retry)
{

7
drivers/firmware/qcom_scm.c
View file

@ -509,6 +509,13 @@ int qcom_scm_iommu_secure_unmap(u64 sec_id, int cbndx, unsigned long iova,
}
EXPORT_SYMBOL(qcom_scm_iommu_secure_unmap);
int qcom_scm_mem_protect_audio(phys_addr_t paddr, size_t size)
{
return __qcom_scm_mem_protect_audio(__scm ? __scm->dev : NULL,
paddr, size);
}
EXPORT_SYMBOL(qcom_scm_mem_protect_audio);
/**
* qcom_scm_assign_mem_regions() - Make a secure call to reassign memory
* ownership of several memory regions

2
drivers/firmware/qcom_scm.h
View file

@ -274,6 +274,8 @@ extern int __qcom_scm_invoke_callback_response(struct device *dev,
u64 *response_type, unsigned int *data);
extern void __qcom_scm_init(void);
extern int __qcom_scm_mem_protect_audio(struct device *dev, phys_addr_t paddr,
size_t size);
#ifdef CONFIG_QCOM_RTIC

3
include/linux/qcom_scm.h
View file

@ -202,6 +202,7 @@ extern int qcom_scm_invoke_callback_response(phys_addr_t out_buf,
size_t out_buf_size, int32_t *result, u64 *response_type,
unsigned int *data);
extern bool qcom_scm_is_available(void);
extern int qcom_scm_mem_protect_audio(phys_addr_t paddr, size_t size);
#else
#include <linux/errno.h>
@ -378,5 +379,7 @@ static inline int qcom_scm_invoke_callback_response(phys_addr_t out_buf,
size_t out_buf_size, int32_t *result, u64 *request_type,
unsigned int *data) { return -ENODEV; }
static inline bool qcom_scm_is_available(void) { return false; }
static inline int qcom_scm_mem_protect_audio(phys_addr_t paddr, size_t size)
{ return -ENODEV; }
#endif
#endif