mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-24 14:58:10 +07:00
e6ea46511b
Now that we have common definitions for SMCCC conduits, move the SDEI code over to them, and remove the SDEI-specific definitions. There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: James Morse <james.morse@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
83 lines
2.5 KiB
C
83 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
// Copyright (C) 2017 Arm Ltd.
|
|
#ifndef __LINUX_ARM_SDEI_H
|
|
#define __LINUX_ARM_SDEI_H
|
|
|
|
#include <uapi/linux/arm_sdei.h>
|
|
|
|
#include <acpi/ghes.h>
|
|
|
|
#ifdef CONFIG_ARM_SDE_INTERFACE
|
|
#include <asm/sdei.h>
|
|
#endif
|
|
|
|
/* Arch code should override this to set the entry point from firmware... */
|
|
#ifndef sdei_arch_get_entry_point
|
|
#define sdei_arch_get_entry_point(conduit) (0)
|
|
#endif
|
|
|
|
/*
|
|
* When an event occurs sdei_event_handler() will call a user-provided callback
|
|
* like this in NMI context on the CPU that received the event.
|
|
*/
|
|
typedef int (sdei_event_callback)(u32 event, struct pt_regs *regs, void *arg);
|
|
|
|
/*
|
|
* Register your callback to claim an event. The event must be described
|
|
* by firmware.
|
|
*/
|
|
int sdei_event_register(u32 event_num, sdei_event_callback *cb, void *arg);
|
|
|
|
/*
|
|
* Calls to sdei_event_unregister() may return EINPROGRESS. Keep calling
|
|
* it until it succeeds.
|
|
*/
|
|
int sdei_event_unregister(u32 event_num);
|
|
|
|
int sdei_event_enable(u32 event_num);
|
|
int sdei_event_disable(u32 event_num);
|
|
|
|
/* GHES register/unregister helpers */
|
|
int sdei_register_ghes(struct ghes *ghes, sdei_event_callback *normal_cb,
|
|
sdei_event_callback *critical_cb);
|
|
int sdei_unregister_ghes(struct ghes *ghes);
|
|
|
|
#ifdef CONFIG_ARM_SDE_INTERFACE
|
|
/* For use by arch code when CPU hotplug notifiers are not appropriate. */
|
|
int sdei_mask_local_cpu(void);
|
|
int sdei_unmask_local_cpu(void);
|
|
#else
|
|
static inline int sdei_mask_local_cpu(void) { return 0; }
|
|
static inline int sdei_unmask_local_cpu(void) { return 0; }
|
|
#endif /* CONFIG_ARM_SDE_INTERFACE */
|
|
|
|
|
|
/*
|
|
* This struct represents an event that has been registered. The driver
|
|
* maintains a list of all events, and which ones are registered. (Private
|
|
* events have one entry in the list, but are registered on each CPU).
|
|
* A pointer to this struct is passed to firmware, and back to the event
|
|
* handler. The event handler can then use this to invoke the registered
|
|
* callback, without having to walk the list.
|
|
*
|
|
* For CPU private events, this structure is per-cpu.
|
|
*/
|
|
struct sdei_registered_event {
|
|
/* For use by arch code: */
|
|
struct pt_regs interrupted_regs;
|
|
|
|
sdei_event_callback *callback;
|
|
void *callback_arg;
|
|
u32 event_num;
|
|
u8 priority;
|
|
};
|
|
|
|
/* The arch code entry point should then call this when an event arrives. */
|
|
int notrace sdei_event_handler(struct pt_regs *regs,
|
|
struct sdei_registered_event *arg);
|
|
|
|
/* arch code may use this to retrieve the extra registers. */
|
|
int sdei_api_event_context(u32 query, u64 *result);
|
|
|
|
#endif /* __LINUX_ARM_SDEI_H */
|