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msm: kgsl: Migrate SCM calls in kgsl iommu

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Adding APIs to check if KGSL SMMU is available, and programming the
SMMU Aperture size. Migrating SCM calls in the KGSL IOMMU driver.

Change-Id: I77178f3e300112fa47a8ca6861acb08d547c9875
Signed-off-by: Siddharth Gupta <sidgup@codeaurora.org>
Signed-off-by: Elliot Berman <eberman@codeaurora.org>
This commit is contained in:
Siddharth Gupta
2019-10-10 13:26:24 -07:00
committed by Elliot Berman
parent 11b286fb73
commit df1491d155
4 changed files with 98 additions and 0 deletions
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49
drivers/firmware/qcom_scm-smc.c
View File

@@ -1008,6 +1008,33 @@ int __qcom_scm_mem_protect_region_id(struct device *dev, phys_addr_t paddr,
return ret;
}
int __qcom_scm_mem_protect_lock_id2_flat(struct device *dev,
phys_addr_t list_addr, size_t list_size,
size_t chunk_size, size_t memory_usage,
int lock)
{
int ret;
struct qcom_scm_desc desc = {
.svc = QCOM_SCM_SVC_MP,
.cmd = QCOM_SCM_MP_MEM_PROTECT_LOCK_ID2_FLAT,
.owner = ARM_SMCCC_OWNER_SIP
};
desc.args[0] = list_addr;
desc.args[1] = list_size;
desc.args[2] = chunk_size;
desc.args[3] = memory_usage;
desc.args[4] = lock;
desc.args[5] = 0;
desc.arginfo = QCOM_SCM_ARGS(6, QCOM_SCM_RW, QCOM_SCM_VAL, QCOM_SCM_VAL,
QCOM_SCM_VAL, QCOM_SCM_VAL, QCOM_SCM_VAL);
ret = qcom_scm_call(dev, &desc);
return ret;
}
int __qcom_scm_iommu_secure_map(struct device *dev, phys_addr_t sg_list_addr,
size_t num_sg, size_t sg_block_size, u64 sec_id,
int cbndx, unsigned long iova, size_t total_len)
@@ -1088,6 +1115,28 @@ int __qcom_scm_assign_mem(struct device *dev, phys_addr_t mem_region,
return ret ? : desc.res[0];
}
int __qcom_scm_kgsl_set_smmu_aperture(struct device *dev,
unsigned int num_context_bank)
{
int ret;
struct qcom_scm_desc desc = {
.svc = QCOM_SCM_SVC_MP,
.cmd = QCOM_SCM_MP_CP_SMMU_APERTURE_ID,
.owner = ARM_SMCCC_OWNER_SIP
};
desc.args[0] = 0xffff0000 | ((QCOM_SCM_CP_APERTURE_REG & 0xff) << 8) |
(num_context_bank & 0xff);
desc.args[1] = 0xffffffff;
desc.args[2] = 0xffffffff;
desc.args[3] = 0xffffffff;
desc.arginfo = QCOM_SCM_ARGS(4);
ret = qcom_scm_call(dev, &desc);
return ret;
}
int __qcom_scm_hdcp_req(struct device *dev, struct qcom_scm_hdcp_req *req,
u32 req_cnt, u32 *resp)
{

27
drivers/firmware/qcom_scm.c
View File

@@ -378,6 +378,15 @@ int qcom_scm_mem_protect_region_id(phys_addr_t paddr, size_t size)
}
EXPORT_SYMBOL(qcom_scm_mem_protect_region_id);
int qcom_scm_mem_protect_lock_id2_flat(phys_addr_t list_addr,
size_t list_size, size_t chunk_size,
size_t memory_usage, int lock)
{
return __qcom_scm_mem_protect_lock_id2_flat(__scm->dev, list_addr,
list_size, chunk_size, memory_usage, lock);
}
EXPORT_SYMBOL(qcom_scm_mem_protect_lock_id2_flat);
int qcom_scm_iommu_secure_map(phys_addr_t sg_list_addr, size_t num_sg,
size_t sg_block_size, u64 sec_id, int cbndx,
unsigned long iova, size_t total_len)
@@ -477,6 +486,24 @@ int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
}
EXPORT_SYMBOL(qcom_scm_assign_mem);
bool qcom_scm_kgsl_set_smmu_aperture_available(void)
{
int ret;
ret = __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_MP,
QCOM_SCM_MP_CP_SMMU_APERTURE_ID);
return ret > 0;
}
EXPORT_SYMBOL(qcom_scm_kgsl_set_smmu_aperture_available);
int qcom_scm_kgsl_set_smmu_aperture(unsigned int num_context_bank)
{
return __qcom_scm_kgsl_set_smmu_aperture(__scm->dev,
num_context_bank);
}
EXPORT_SYMBOL(qcom_scm_kgsl_set_smmu_aperture);
/**
* qcom_scm_hdcp_available() - Check if secure environment supports HDCP.
*

9
drivers/firmware/qcom_scm.h
View File

@@ -65,9 +65,11 @@ extern void __qcom_scm_mmu_sync(struct device *dev, bool sync);
#define QCOM_SCM_MP_IOMMU_SECURE_PTBL_SIZE 0x03
#define QCOM_SCM_MP_IOMMU_SECURE_PTBL_INIT 0x04
#define QCOM_SCM_MP_MEM_PROTECT_REGION_ID 0x10
#define QCOM_SCM_MP_MEM_PROTECT_LOCK_ID2_FLAT 0x11
#define QCOM_SCM_MP_IOMMU_SECURE_MAP2_FLAT 0x12
#define QCOM_SCM_MP_IOMMU_SECURE_UNMAP2_FLAT 0x13
#define QCOM_SCM_MP_ASSIGN 0x16
#define QCOM_SCM_MP_CP_SMMU_APERTURE_ID 0x1b
extern int __qcom_scm_restore_sec_cfg(struct device *dev, u32 device_id,
u32 spare);
extern int __qcom_scm_iommu_secure_ptbl_size(struct device *dev, u32 spare,
@@ -76,6 +78,10 @@ extern int __qcom_scm_iommu_secure_ptbl_init(struct device *dev, u64 addr,
u32 size, u32 spare);
extern int __qcom_scm_mem_protect_region_id(struct device *dev,
phys_addr_t paddr, size_t size);
extern int __qcom_scm_mem_protect_lock_id2_flat(struct device *dev,
phys_addr_t list_addr, size_t list_size,
size_t chunk_size, size_t memory_usage,
int lock);
extern int __qcom_scm_iommu_secure_map(struct device *dev,
phys_addr_t sg_list_addr, size_t num_sg,
size_t sg_block_size, u64 sec_id, int cbndx,
@@ -87,7 +93,10 @@ extern int __qcom_scm_assign_mem(struct device *dev,
phys_addr_t mem_region, size_t mem_sz,
phys_addr_t src, size_t src_sz,
phys_addr_t dest, size_t dest_sz);
extern int __qcom_scm_kgsl_set_smmu_aperture(struct device *dev,
unsigned int num_context_bank);
#define QCOM_SCM_IOMMU_TLBINVAL_FLAG 0x00000001
#define QCOM_SCM_CP_APERTURE_REG 0x0
#define QCOM_SCM_SVC_HDCP 0x11
#define QCOM_SCM_HDCP_INVOKE 0x01

13
include/linux/qcom_scm.h
View File

@@ -56,6 +56,9 @@ extern int qcom_scm_restore_sec_cfg(u32 device_id, u32 spare);
extern int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size);
extern int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare);
extern int qcom_scm_mem_protect_region_id(phys_addr_t paddr, size_t size);
extern int qcom_scm_mem_protect_lock_id2_flat(phys_addr_t list_addr,
size_t list_size, size_t chunk_size,
size_t memory_usage, int lock);
extern int qcom_scm_iommu_secure_map(phys_addr_t sg_list_addr, size_t num_sg,
size_t sg_block_size, u64 sec_id, int cbndx,
unsigned long iova, size_t total_len);
@@ -65,6 +68,9 @@ 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 bool qcom_scm_kgsl_set_smmu_aperture_available(void);
extern int qcom_scm_kgsl_set_smmu_aperture(
unsigned int num_context_bank);
extern bool qcom_scm_hdcp_available(void);
extern int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt,
u32 *resp);
@@ -110,6 +116,9 @@ static inline int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare)
{ return -ENODEV; }
static inline int qcom_scm_mem_protect_region_id(phys_addr_t paddr, size_t size)
{ return -ENODEV; }
static inline int qcom_scm_mem_protect_lock_id2_flat(phys_addr_t list_addr,
size_t list_size, size_t chunk_size, size_t memory_usage,
int lock) { return -ENODEV; }
static inline int qcom_scm_iommu_secure_map(phys_addr_t sg_list_addr,
size_t num_sg, size_t sg_block_size, u64 sec_id, int cbndx,
unsigned long iova, size_t total_len) { return -ENODEV; }
@@ -119,6 +128,10 @@ 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; }
static inline bool qcom_scm_kgsl_set_smmu_aperture_available(void)
{ return false; }
static inline int qcom_scm_kgsl_set_smmu_aperture(
unsigned int num_context_bank) { return -ENODEV; }
static inline bool qcom_scm_hdcp_available(void) { return false; }
static inline int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt,
u32 *resp) { return -ENODEV; }