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/*
* Copyright (c) 2015-2017, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#ifndef __MSM_SECURE_BUFFER_H__
#define __MSM_SECURE_BUFFER_H__
#include <linux/scatterlist.h>
/*
* if you add a secure VMID here make sure you update
* msm_secure_vmid_to_string.
* Make sure to keep the VMID_LAST as the last entry in the enum.
* This is needed in ion to create a list and it's sized using VMID_LAST.
*/
enum vmid {
VMID_HLOS = 0x3,
VMID_CP_TOUCH = 0x8,
VMID_CP_BITSTREAM = 0x9,
VMID_CP_PIXEL = 0xA,
VMID_CP_NON_PIXEL = 0xB,
VMID_CP_CAMERA = 0xD,
VMID_HLOS_FREE = 0xE,
VMID_MSS_MSA = 0xF,
VMID_MSS_NONMSA = 0x10,
VMID_CP_SEC_DISPLAY = 0x11,
VMID_CP_APP = 0x12,
VMID_WLAN = 0x18,
VMID_WLAN_CE = 0x19,
VMID_CP_CAMERA_PREVIEW = 0x1D,
VMID_CP_SPSS_SP_SHARED = 0x22,
VMID_LAST,
VMID_INVAL = -1
};
#define PERM_READ 0x4
#define PERM_WRITE 0x2
#define PERM_EXEC 0x1
#ifdef CONFIG_MSM_SECURE_BUFFER
int msm_secure_table(struct sg_table *table);
int msm_unsecure_table(struct sg_table *table);
int hyp_assign_table(struct sg_table *table,
u32 *source_vm_list, int source_nelems,
int *dest_vmids, int *dest_perms,
int dest_nelems);
extern int hyp_assign_phys(phys_addr_t addr, u64 size,
u32 *source_vmlist, int source_nelems,
int *dest_vmids, int *dest_perms, int dest_nelems);
bool msm_secure_v2_is_supported(void);
const char *msm_secure_vmid_to_string(int secure_vmid);
#else
static inline int msm_secure_table(struct sg_table *table)
{
return -ENOSYS;
}
static inline int msm_unsecure_table(struct sg_table *table)
{
return -ENOSYS;
}
static inline int hyp_assign_table(struct sg_table *table,
u32 *source_vm_list, int source_nelems,
int *dest_vmids, int *dest_perms,
int dest_nelems)
{
return -ENOSYS;
}
static inline int hyp_assign_phys(phys_addr_t addr, u64 size,
u32 *source_vmlist, int source_nelems,
int *dest_vmids, int *dest_perms, int dest_nelems)
{
return -ENOSYS;
}
static inline bool msm_secure_v2_is_supported(void)
{
return false;
}
static inline const char *msm_secure_vmid_to_string(int secure_vmid)
{
return "N/A";
}
#endif
#endif
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