++
On 7/24/2020 8:04 AM, Stanimir Varbanov wrote:
> Hi,
>
> Gentle ping for review.
>
> On 7/9/20 2:58 PM, Stanimir Varbanov wrote:
>> This adds a new SCM memprotect command to set virtual address ranges.
>>
>> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@xxxxxxxxxx>
>> ---
>> drivers/firmware/qcom_scm.c | 24 ++++++++++++++++++++++++
>> drivers/firmware/qcom_scm.h | 1 +
>> include/linux/qcom_scm.h | 8 +++++++-
>> 3 files changed, 32 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c
>> index 0e7233a20f34..a73870255c2e 100644
>> --- a/drivers/firmware/qcom_scm.c
>> +++ b/drivers/firmware/qcom_scm.c
>> @@ -864,6 +864,30 @@ int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
>> }
>> EXPORT_SYMBOL(qcom_scm_assign_mem);
>>
>> +int qcom_scm_mem_protect_video_var(u32 cp_start, u32 cp_size,
>> + u32 cp_nonpixel_start,
>> + u32 cp_nonpixel_size)
>> +{
>> + int ret;
>> + struct qcom_scm_desc desc = {
>> + .svc = QCOM_SCM_SVC_MP,
>> + .cmd = QCOM_SCM_MP_VIDEO_VAR,
>> + .arginfo = QCOM_SCM_ARGS(4, QCOM_SCM_VAL, QCOM_SCM_VAL,
>> + QCOM_SCM_VAL, QCOM_SCM_VAL),
>> + .args[0] = cp_start,
>> + .args[1] = cp_size,
>> + .args[2] = cp_nonpixel_start,
>> + .args[3] = cp_nonpixel_size,
>> + .owner = ARM_SMCCC_OWNER_SIP,
>> + };
>> + struct qcom_scm_res res;
>> +
>> + ret = qcom_scm_call(__scm->dev, &desc, &res);
>> +
>> + return ret ? : res.result[0];
>> +}
>> +EXPORT_SYMBOL(qcom_scm_mem_protect_video_var);
>> +
Small nit, can you bump the function above assign_mem? It would keep order aligned with
the macros in qcom_scm.h
>> /**
>> * qcom_scm_ocmem_lock_available() - is OCMEM lock/unlock interface available
>> */
>> diff --git a/drivers/firmware/qcom_scm.h b/drivers/firmware/qcom_scm.h
>> index d9ed670da222..14da834ac593 100644
>> --- a/drivers/firmware/qcom_scm.h
>> +++ b/drivers/firmware/qcom_scm.h
>> @@ -97,6 +97,7 @@ extern int scm_legacy_call(struct device *dev, const struct qcom_scm_desc *desc,
>> #define QCOM_SCM_MP_RESTORE_SEC_CFG 0x02
>> #define QCOM_SCM_MP_IOMMU_SECURE_PTBL_SIZE 0x03
>> #define QCOM_SCM_MP_IOMMU_SECURE_PTBL_INIT 0x04
>> +#define QCOM_SCM_MP_VIDEO_VAR 0x08
>> #define QCOM_SCM_MP_ASSIGN 0x16
>>
>> #define QCOM_SCM_SVC_OCMEM 0x0f
>> diff --git a/include/linux/qcom_scm.h b/include/linux/qcom_scm.h
>> index 3d6a24697761..19b5188d17f4 100644
>> --- a/include/linux/qcom_scm.h
>> +++ b/include/linux/qcom_scm.h
>> @@ -81,7 +81,9 @@ extern int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
>> unsigned int *src,
>> const struct qcom_scm_vmperm *newvm,
>> unsigned int dest_cnt);
>> -
>> +extern int qcom_scm_mem_protect_video_var(u32 cp_start, u32 cp_size,
>> + u32 cp_nonpixel_start,
>> + u32 cp_nonpixel_size);
Same here.
>> extern bool qcom_scm_ocmem_lock_available(void);
>> extern int qcom_scm_ocmem_lock(enum qcom_scm_ocmem_client id, u32 offset,
>> u32 size, u32 mode);
>> @@ -131,6 +133,10 @@ static inline int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare)
>> static inline int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
>> unsigned int *src, const struct qcom_scm_vmperm *newvm,
>> unsigned int dest_cnt) { return -ENODEV; }
>> +extern inline int qcom_scm_mem_protect_video_var(u32 cp_start, u32 cp_size,
>> + u32 cp_nonpixel_start,
>> + u32 cp_nonpixel_size)
>> + { return -ENODEV; }
Same here.
>>
>> static inline bool qcom_scm_ocmem_lock_available(void) { return false; }
>> static inline int qcom_scm_ocmem_lock(enum qcom_scm_ocmem_client id, u32 offset,
>>
>
--
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