xref: /openbmc/linux/arch/arm64/include/asm/proc-fns.h (revision 8c749ce9)
1 /*
2  * Based on arch/arm/include/asm/proc-fns.h
3  *
4  * Copyright (C) 1997-1999 Russell King
5  * Copyright (C) 2000 Deep Blue Solutions Ltd
6  * Copyright (C) 2012 ARM Ltd.
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License version 2 as
10  * published by the Free Software Foundation.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
19  */
20 #ifndef __ASM_PROCFNS_H
21 #define __ASM_PROCFNS_H
22 
23 #ifdef __KERNEL__
24 #ifndef __ASSEMBLY__
25 
26 #include <asm/page.h>
27 
28 struct mm_struct;
29 struct cpu_suspend_ctx;
30 
31 extern void cpu_do_idle(void);
32 extern void cpu_do_switch_mm(unsigned long pgd_phys, struct mm_struct *mm);
33 extern void cpu_do_suspend(struct cpu_suspend_ctx *ptr);
34 extern u64 cpu_do_resume(phys_addr_t ptr, u64 idmap_ttbr);
35 
36 #include <asm/memory.h>
37 
38 #define cpu_switch_mm(pgd,mm)				\
39 do {							\
40 	BUG_ON(pgd == swapper_pg_dir);			\
41 	cpu_do_switch_mm(virt_to_phys(pgd),mm);		\
42 } while (0)
43 
44 #endif /* __ASSEMBLY__ */
45 #endif /* __KERNEL__ */
46 #endif /* __ASM_PROCFNS_H */
47