Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/* Copyright (c) 2010-2015, The Linux Foundation. All rights reserved.
2 * Copyright (C) 2015 Linaro Ltd.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 and
6 * only version 2 as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 */
13#ifndef __QCOM_SCM_H
14#define __QCOM_SCM_H
15
16#include <linux/types.h>
17#include <linux/cpumask.h>
18
19#define QCOM_SCM_VERSION(major, minor) (((major) << 16) | ((minor) & 0xFF))
20#define QCOM_SCM_CPU_PWR_DOWN_L2_ON 0x0
21#define QCOM_SCM_CPU_PWR_DOWN_L2_OFF 0x1
22#define QCOM_SCM_HDCP_MAX_REQ_CNT 5
23
24struct qcom_scm_hdcp_req {
25 u32 addr;
26 u32 val;
27};
28
29struct qcom_scm_vmperm {
30 int vmid;
31 int perm;
32};
33
34#define QCOM_SCM_VMID_HLOS 0x3
35#define QCOM_SCM_VMID_MSS_MSA 0xF
36#define QCOM_SCM_PERM_READ 0x4
37#define QCOM_SCM_PERM_WRITE 0x2
38#define QCOM_SCM_PERM_EXEC 0x1
39#define QCOM_SCM_PERM_RW (QCOM_SCM_PERM_READ | QCOM_SCM_PERM_WRITE)
40#define QCOM_SCM_PERM_RWX (QCOM_SCM_PERM_RW | QCOM_SCM_PERM_EXEC)
41
42#if IS_ENABLED(CONFIG_QCOM_SCM)
43extern int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus);
44extern int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus);
45extern bool qcom_scm_is_available(void);
46extern bool qcom_scm_hdcp_available(void);
47extern int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt,
48 u32 *resp);
49extern bool qcom_scm_pas_supported(u32 peripheral);
50extern int qcom_scm_pas_init_image(u32 peripheral, const void *metadata,
51 size_t size);
52extern int qcom_scm_pas_mem_setup(u32 peripheral, phys_addr_t addr,
53 phys_addr_t size);
54extern int qcom_scm_pas_auth_and_reset(u32 peripheral);
55extern int qcom_scm_pas_shutdown(u32 peripheral);
56extern int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
57 unsigned int *src, struct qcom_scm_vmperm *newvm,
58 int dest_cnt);
59extern void qcom_scm_cpu_power_down(u32 flags);
60extern u32 qcom_scm_get_version(void);
61extern int qcom_scm_set_remote_state(u32 state, u32 id);
62extern int qcom_scm_restore_sec_cfg(u32 device_id, u32 spare);
63extern int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size);
64extern int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare);
65extern int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val);
66extern int qcom_scm_io_writel(phys_addr_t addr, unsigned int val);
67#else
68static inline
69int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus)
70{
71 return -ENODEV;
72}
73static inline
74int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus)
75{
76 return -ENODEV;
77}
78static inline bool qcom_scm_is_available(void) { return false; }
79static inline bool qcom_scm_hdcp_available(void) { return false; }
80static inline int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt,
81 u32 *resp) { return -ENODEV; }
82static inline bool qcom_scm_pas_supported(u32 peripheral) { return false; }
83static inline int qcom_scm_pas_init_image(u32 peripheral, const void *metadata,
84 size_t size) { return -ENODEV; }
85static inline int qcom_scm_pas_mem_setup(u32 peripheral, phys_addr_t addr,
86 phys_addr_t size) { return -ENODEV; }
87static inline int
88qcom_scm_pas_auth_and_reset(u32 peripheral) { return -ENODEV; }
89static inline int qcom_scm_pas_shutdown(u32 peripheral) { return -ENODEV; }
90static inline void qcom_scm_cpu_power_down(u32 flags) {}
91static inline u32 qcom_scm_get_version(void) { return 0; }
92static inline u32
93qcom_scm_set_remote_state(u32 state,u32 id) { return -ENODEV; }
94static inline int qcom_scm_restore_sec_cfg(u32 device_id, u32 spare) { return -ENODEV; }
95static inline int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size) { return -ENODEV; }
96static inline int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare) { return -ENODEV; }
97static inline int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val) { return -ENODEV; }
98static inline int qcom_scm_io_writel(phys_addr_t addr, unsigned int val) { return -ENODEV; }
99#endif
100#endif