include/linux/qcom_scm.h

   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 #define QCOM_SCM_VERSION(major, minor)  (((major) << 16) | ((minor) & 0xFF))
  17 #define QCOM_SCM_CPU_PWR_DOWN_L2_ON     0x0
  18 #define QCOM_SCM_CPU_PWR_DOWN_L2_OFF    0x1
  19 #define QCOM_SCM_HDCP_MAX_REQ_CNT       5
  20
  21 struct qcom_scm_hdcp_req {
  22         u32 addr;
  23         u32 val;
  24 };
  25
  26 #if IS_ENABLED(CONFIG_QCOM_SCM)
  27 extern int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus);
  28 extern int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus);
  29 extern bool qcom_scm_is_available(void);
  30 extern bool qcom_scm_hdcp_available(void);
  31 extern int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt,
  32                              u32 *resp);
  33 extern bool qcom_scm_pas_supported(u32 peripheral);
  34 extern int qcom_scm_pas_init_image(u32 peripheral, const void *metadata,
  35                                    size_t size);
  36 extern int qcom_scm_pas_mem_setup(u32 peripheral, phys_addr_t addr,
  37                                   phys_addr_t size);
  38 extern int qcom_scm_pas_auth_and_reset(u32 peripheral);
  39 extern int qcom_scm_pas_shutdown(u32 peripheral);
  40 extern void qcom_scm_cpu_power_down(u32 flags);
  41 extern u32 qcom_scm_get_version(void);
  42 extern int qcom_scm_set_remote_state(u32 state, u32 id);
  43 extern int qcom_scm_restore_sec_cfg(u32 device_id, u32 spare);
  44 extern int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size);
  45 extern int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare);
  46 extern int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val);
  47 extern int qcom_scm_io_writel(phys_addr_t addr, unsigned int val);
  48 #else
  49 static inline
  50 int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus)
  51 {
  52         return -ENODEV;
  53 }
  54 static inline
  55 int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus)
  56 {
  57         return -ENODEV;
  58 }
  59 static inline bool qcom_scm_is_available(void) { return false; }
  60 static inline bool qcom_scm_hdcp_available(void) { return false; }
  61 static inline int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt,
  62                                     u32 *resp) { return -ENODEV; }
  63 static inline bool qcom_scm_pas_supported(u32 peripheral) { return false; }
  64 static inline int qcom_scm_pas_init_image(u32 peripheral, const void *metadata,
  65                                           size_t size) { return -ENODEV; }
  66 static inline int qcom_scm_pas_mem_setup(u32 peripheral, phys_addr_t addr,
  67                                          phys_addr_t size) { return -ENODEV; }
  68 static inline int
  69 qcom_scm_pas_auth_and_reset(u32 peripheral) { return -ENODEV; }
  70 static inline int qcom_scm_pas_shutdown(u32 peripheral) { return -ENODEV; }
  71 static inline void qcom_scm_cpu_power_down(u32 flags) {}
  72 static inline u32 qcom_scm_get_version(void) { return 0; }
  73 static inline u32
  74 qcom_scm_set_remote_state(u32 state,u32 id) { return -ENODEV; }
  75 static inline int qcom_scm_restore_sec_cfg(u32 device_id, u32 spare) { return -ENODEV; }
  76 static inline int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size) { return -ENODEV; }
  77 static inline int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare) { return -ENODEV; }
  78 static inline int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val) { return -ENODEV; }
  79 static inline int qcom_scm_io_writel(phys_addr_t addr, unsigned int val) { return -ENODEV; }
  80 #endif
  81 #endif