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firmware: qcom_scm: Add support to assign multiple memory regions

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The secure world allows for changing the ownership of multiple
(not necessarily physically contiguous) memory regions in one
secure call. Thus, expose an interface for clients to assign more
than one memory region per secure call.

Change-Id: Ic444627daee9d735b8b039ae3965e861cdcd110a
Signed-off-by: Isaac J. Manjarres <isaacm@codeaurora.org>
Signed-off-by: Elliot Berman <eberman@codeaurora.org>
This commit is contained in:
Isaac J. Manjarres
2019-10-21 15:24:58 -07:00
committed by Elliot Berman
parent ec51a0f5ea
commit f8bf2650d2
2 changed files with 80 additions and 13 deletions
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47
include/linux/qcom_scm.h
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@@ -24,6 +24,19 @@ struct qcom_scm_vmperm {
int perm;
};
struct qcom_scm_current_perm_info {
__le32 vmid;
__le32 perm;
__le64 ctx;
__le32 ctx_size;
__le32 unused;
};
struct qcom_scm_mem_map_info {
__le64 mem_addr;
__le64 mem_size;
};
#define QCOM_SCM_VMID_HLOS 0x3
#define QCOM_SCM_VMID_MSS_MSA 0xF
#define QCOM_SCM_VMID_WLAN 0x18
@@ -34,6 +47,30 @@ struct qcom_scm_vmperm {
#define QCOM_SCM_PERM_RW (QCOM_SCM_PERM_READ | QCOM_SCM_PERM_WRITE)
#define QCOM_SCM_PERM_RWX (QCOM_SCM_PERM_RW | QCOM_SCM_PERM_EXEC)
static inline void qcom_scm_populate_vmperm_info(
struct qcom_scm_current_perm_info *destvm, int vmid, int perm)
{
if (!destvm)
return;
destvm->vmid = cpu_to_le32(vmid);
destvm->perm = cpu_to_le32(perm);
destvm->ctx = 0;
destvm->ctx_size = 0;
}
static inline void qcom_scm_populate_mem_map_info(
struct qcom_scm_mem_map_info *mem_to_map,
phys_addr_t mem_addr, size_t mem_size)
{
if (!mem_to_map)
return;
mem_to_map->mem_addr = cpu_to_le64(mem_addr);
mem_to_map->mem_size = cpu_to_le64(mem_size);
}
#if IS_ENABLED(CONFIG_QCOM_SCM)
extern int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus);
extern int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus);
@@ -68,6 +105,11 @@ extern int qcom_scm_iommu_secure_map(phys_addr_t sg_list_addr, size_t num_sg,
unsigned long iova, size_t total_len);
extern int qcom_scm_iommu_secure_unmap(u64 sec_id, int cbndx,
unsigned long iova, size_t total_len);
extern int
qcom_scm_assign_mem_regions(struct qcom_scm_mem_map_info *mem_regions,
size_t mem_regions_sz, u32 *srcvms, size_t src_sz,
struct qcom_scm_current_perm_info *newvms,
size_t newvms_sz);
extern int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
unsigned int *src,
const struct qcom_scm_vmperm *newvm,
@@ -183,6 +225,11 @@ static inline int qcom_scm_iommu_secure_map(phys_addr_t sg_list_addr,
unsigned long iova, size_t total_len) { return -ENODEV; }
static inline int qcom_scm_iommu_secure_unmap(u64 sec_id, int cbndx,
unsigned long iova, size_t total_len) { return -ENODEV; }
static inline int
qcom_scm_assign_mem_regions(struct qcom_scm_mem_map_info *mem_regions,
size_t mem_regions_sz, u32 *srcvms, size_t src_sz,
struct qcom_scm_current_perm_info *newvms,
size_t newvms_sz) { return -ENODEV; }
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,