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https://github.com/edk2-porting/linux-next.git
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a811b420b6
This patch adds a set remote state SCM API. This will be used by the Venus and GPU subsystems to set state on the remote processors. This work was based on two patch sets by Jordan Crouse and Stanimir Varbanov. Signed-off-by: Andy Gross <andy.gross@linaro.org>
72 lines
2.8 KiB
C
72 lines
2.8 KiB
C
/* Copyright (c) 2010-2015, The Linux Foundation. All rights reserved.
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* Copyright (C) 2015 Linaro Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __QCOM_SCM_H
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#define __QCOM_SCM_H
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#define QCOM_SCM_VERSION(major, minor) (((major) << 16) | ((minor) & 0xFF))
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#define QCOM_SCM_CPU_PWR_DOWN_L2_ON 0x0
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#define QCOM_SCM_CPU_PWR_DOWN_L2_OFF 0x1
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#define QCOM_SCM_HDCP_MAX_REQ_CNT 5
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struct qcom_scm_hdcp_req {
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u32 addr;
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u32 val;
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};
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#if IS_ENABLED(CONFIG_QCOM_SCM)
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extern int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus);
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extern int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus);
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extern bool qcom_scm_is_available(void);
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extern bool qcom_scm_hdcp_available(void);
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extern int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt,
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u32 *resp);
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extern bool qcom_scm_pas_supported(u32 peripheral);
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extern int qcom_scm_pas_init_image(u32 peripheral, const void *metadata,
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size_t size);
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extern int qcom_scm_pas_mem_setup(u32 peripheral, phys_addr_t addr,
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phys_addr_t size);
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extern int qcom_scm_pas_auth_and_reset(u32 peripheral);
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extern int qcom_scm_pas_shutdown(u32 peripheral);
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extern void qcom_scm_cpu_power_down(u32 flags);
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extern u32 qcom_scm_get_version(void);
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extern int qcom_scm_set_remote_state(u32 state, u32 id);
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#else
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static inline
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int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus)
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{
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return -ENODEV;
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}
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static inline
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int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus)
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{
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return -ENODEV;
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}
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static inline bool qcom_scm_is_available(void) { return false; }
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static inline bool qcom_scm_hdcp_available(void) { return false; }
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static inline int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt,
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u32 *resp) { return -ENODEV; }
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static inline bool qcom_scm_pas_supported(u32 peripheral) { return false; }
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static inline int qcom_scm_pas_init_image(u32 peripheral, const void *metadata,
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size_t size) { return -ENODEV; }
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static inline int qcom_scm_pas_mem_setup(u32 peripheral, phys_addr_t addr,
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phys_addr_t size) { return -ENODEV; }
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static inline int
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qcom_scm_pas_auth_and_reset(u32 peripheral) { return -ENODEV; }
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static inline int qcom_scm_pas_shutdown(u32 peripheral) { return -ENODEV; }
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static inline void qcom_scm_cpu_power_down(u32 flags) {}
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static inline u32 qcom_scm_get_version(void) { return 0; }
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static inline u32
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qcom_scm_set_remote_state(u32 state,u32 id) { return -ENODEV; }
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#endif
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#endif
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