1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
/* SPDX-License-Identifier: GPL-2.0 */
// Copyright (C) 2017 Arm Ltd.
#ifndef __ASM_SDEI_H
#define __ASM_SDEI_H
/* Values for sdei_exit_mode */
#define SDEI_EXIT_HVC 0
#define SDEI_EXIT_SMC 1
#define SDEI_STACK_SIZE IRQ_STACK_SIZE
#ifndef __ASSEMBLY__
#include <linux/linkage.h>
#include <linux/preempt.h>
#include <linux/types.h>
#include <asm/virt.h>
extern unsigned long sdei_exit_mode;
/* Software Delegated Exception entry point from firmware*/
asmlinkage void __sdei_asm_handler(unsigned long event_num, unsigned long arg,
unsigned long pc, unsigned long pstate);
/* and its CONFIG_UNMAP_KERNEL_AT_EL0 trampoline */
asmlinkage void __sdei_asm_entry_trampoline(unsigned long event_num,
unsigned long arg,
unsigned long pc,
unsigned long pstate);
/*
* The above entry point does the minimum to call C code. This function does
* anything else, before calling the driver.
*/
struct sdei_registered_event;
asmlinkage unsigned long __sdei_handler(struct pt_regs *regs,
struct sdei_registered_event *arg);
unsigned long do_sdei_event(struct pt_regs *regs,
struct sdei_registered_event *arg);
unsigned long sdei_arch_get_entry_point(int conduit);
#define sdei_arch_get_entry_point(x) sdei_arch_get_entry_point(x)
struct stack_info;
bool _on_sdei_stack(unsigned long sp, unsigned long size,
struct stack_info *info);
static inline bool on_sdei_stack(unsigned long sp, unsigned long size,
struct stack_info *info)
{
if (!IS_ENABLED(CONFIG_VMAP_STACK))
return false;
if (!IS_ENABLED(CONFIG_ARM_SDE_INTERFACE))
return false;
if (in_nmi())
return _on_sdei_stack(sp, size, info);
return false;
}
#endif /* __ASSEMBLY__ */
#endif /* __ASM_SDEI_H */
|
