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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/arm/include/asm/proc-fns.h | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/arm/include/asm/proc-fns.h')
-rw-r--r-- | kernel/arch/arm/include/asm/proc-fns.h | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/kernel/arch/arm/include/asm/proc-fns.h b/kernel/arch/arm/include/asm/proc-fns.h new file mode 100644 index 000000000..5324c1112 --- /dev/null +++ b/kernel/arch/arm/include/asm/proc-fns.h @@ -0,0 +1,160 @@ +/* + * arch/arm/include/asm/proc-fns.h + * + * Copyright (C) 1997-1999 Russell King + * Copyright (C) 2000 Deep Blue Solutions Ltd + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef __ASM_PROCFNS_H +#define __ASM_PROCFNS_H + +#ifdef __KERNEL__ + +#include <asm/glue-proc.h> +#include <asm/page.h> + +#ifndef __ASSEMBLY__ + +struct mm_struct; + +/* + * Don't change this structure - ASM code relies on it. + */ +extern struct processor { + /* MISC + * get data abort address/flags + */ + void (*_data_abort)(unsigned long pc); + /* + * Retrieve prefetch fault address + */ + unsigned long (*_prefetch_abort)(unsigned long lr); + /* + * Set up any processor specifics + */ + void (*_proc_init)(void); + /* + * Disable any processor specifics + */ + void (*_proc_fin)(void); + /* + * Special stuff for a reset + */ + void (*reset)(unsigned long addr) __attribute__((noreturn)); + /* + * Idle the processor + */ + int (*_do_idle)(void); + /* + * Processor architecture specific + */ + /* + * clean a virtual address range from the + * D-cache without flushing the cache. + */ + void (*dcache_clean_area)(void *addr, int size); + + /* + * Set the page table + */ + void (*switch_mm)(phys_addr_t pgd_phys, struct mm_struct *mm); + /* + * Set a possibly extended PTE. Non-extended PTEs should + * ignore 'ext'. + */ +#ifdef CONFIG_ARM_LPAE + void (*set_pte_ext)(pte_t *ptep, pte_t pte); +#else + void (*set_pte_ext)(pte_t *ptep, pte_t pte, unsigned int ext); +#endif + + /* Suspend/resume */ + unsigned int suspend_size; + void (*do_suspend)(void *); + void (*do_resume)(void *); +} processor; + +#ifndef MULTI_CPU +extern void cpu_proc_init(void); +extern void cpu_proc_fin(void); +extern int cpu_do_idle(void); +extern void cpu_dcache_clean_area(void *, int); +extern void cpu_do_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +#ifdef CONFIG_ARM_LPAE +extern void cpu_set_pte_ext(pte_t *ptep, pte_t pte); +#else +extern void cpu_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext); +#endif +extern void cpu_reset(unsigned long addr) __attribute__((noreturn)); + +/* These three are private to arch/arm/kernel/suspend.c */ +extern void cpu_do_suspend(void *); +extern void cpu_do_resume(void *); +#else +#define cpu_proc_init processor._proc_init +#define cpu_proc_fin processor._proc_fin +#define cpu_reset processor.reset +#define cpu_do_idle processor._do_idle +#define cpu_dcache_clean_area processor.dcache_clean_area +#define cpu_set_pte_ext processor.set_pte_ext +#define cpu_do_switch_mm processor.switch_mm + +/* These three are private to arch/arm/kernel/suspend.c */ +#define cpu_do_suspend processor.do_suspend +#define cpu_do_resume processor.do_resume +#endif + +extern void cpu_resume(void); + +#include <asm/memory.h> + +#ifdef CONFIG_MMU + +#define cpu_switch_mm(pgd,mm) cpu_do_switch_mm(virt_to_phys(pgd),mm) + +#ifdef CONFIG_ARM_LPAE + +#define cpu_get_ttbr(nr) \ + ({ \ + u64 ttbr; \ + __asm__("mrrc p15, " #nr ", %Q0, %R0, c2" \ + : "=r" (ttbr)); \ + ttbr; \ + }) + +#define cpu_set_ttbr(nr, val) \ + do { \ + u64 ttbr = val; \ + __asm__("mcrr p15, " #nr ", %Q0, %R0, c2" \ + : : "r" (ttbr)); \ + } while (0) + +#define cpu_get_pgd() \ + ({ \ + u64 pg = cpu_get_ttbr(0); \ + pg &= ~(PTRS_PER_PGD*sizeof(pgd_t)-1); \ + (pgd_t *)phys_to_virt(pg); \ + }) +#else +#define cpu_get_pgd() \ + ({ \ + unsigned long pg; \ + __asm__("mrc p15, 0, %0, c2, c0, 0" \ + : "=r" (pg) : : "cc"); \ + pg &= ~0x3fff; \ + (pgd_t *)phys_to_virt(pg); \ + }) +#endif + +#else /*!CONFIG_MMU */ + +#define cpu_switch_mm(pgd,mm) { } + +#endif + +#endif /* __ASSEMBLY__ */ +#endif /* __KERNEL__ */ +#endif /* __ASM_PROCFNS_H */ |