86d0cd334f
avoid event signaled twice. add ioctl to check if event was signaled. Change-Id: Ie75b9db86f2badddc08d65eee30ecd6a15795256 Signed-off-by: Amir Samuelov <amirs@codeaurora.org>
82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
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/*
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* Copyright (c) 2019-2020, The Linux Foundation. All rights reserved.
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*/
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#ifndef _UAPI_SPSS_UTILS_H_
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#define _UAPI_SPSS_UTILS_H_
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#include <linux/types.h> /* uint32_t, bool */
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#include <linux/ioctl.h> /* ioctl() */
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/**
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* @brief - Secure Processor Utilities interface to user space
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*
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* The kernel spss_utils driver interface to user space via IOCTL
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* and SYSFS (device attributes).
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*/
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#define SPSS_IOC_MAGIC 'S'
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/* ---------- set fw cmac --------------------------------- */
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#define NUM_SPU_UEFI_APPS 3
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#define CMAC_SIZE_IN_WORDS 4
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struct spss_ioc_set_fw_cmac {
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uint32_t cmac[CMAC_SIZE_IN_WORDS];
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uint32_t app_cmacs[NUM_SPU_UEFI_APPS][CMAC_SIZE_IN_WORDS];
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} __packed;
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#define SPSS_IOC_SET_FW_CMAC \
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_IOWR(SPSS_IOC_MAGIC, 1, struct spss_ioc_set_fw_cmac)
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/* ---------- wait for event ------------------------------ */
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enum _spss_event_id {
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/* signaled from user */
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SPSS_EVENT_ID_PIL_CALLED = 0,
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SPSS_EVENT_ID_NVM_READY = 1,
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SPSS_EVENT_ID_SPU_READY = 2,
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SPSS_NUM_USER_EVENTS,
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/* signaled from kernel */
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SPSS_EVENT_ID_SPU_POWER_DOWN = 6,
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SPSS_EVENT_ID_SPU_POWER_UP = 7,
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SPSS_NUM_EVENTS,
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} spss_event_id;
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enum _spss_event_status {
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EVENT_STATUS_SIGNALED = 0xAAAA,
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EVENT_STATUS_NOT_SIGNALED = 0xFFFF,
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EVENT_STATUS_TIMEOUT = 0xEEE1,
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EVENT_STATUS_ABORTED = 0xEEE2,
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} spss_event_status;
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struct spss_ioc_wait_for_event {
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uint32_t event_id; /* input */
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uint32_t timeout_sec; /* input */
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uint32_t status; /* output */
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} __packed;
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#define SPSS_IOC_WAIT_FOR_EVENT \
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_IOWR(SPSS_IOC_MAGIC, 2, struct spss_ioc_wait_for_event)
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/* ---------- signal event ------------------------------ */
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struct spss_ioc_signal_event {
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uint32_t event_id; /* input */
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uint32_t status; /* output */
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} __packed;
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#define SPSS_IOC_SIGNAL_EVENT \
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_IOWR(SPSS_IOC_MAGIC, 3, struct spss_ioc_signal_event)
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/* ---------- is event isgnaled ------------------------------ */
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struct spss_ioc_is_signaled {
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uint32_t event_id; /* input */
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uint32_t status; /* output */
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} __attribute__((packed));
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#define SPSS_IOC_IS_EVENT_SIGNALED \
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_IOWR(SPSS_IOC_MAGIC, 4, struct spss_ioc_is_signaled)
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#endif /* _UAPI_SPSS_UTILS_H_ */
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