initial_commit

1 files changed, 115 insertions, 0 deletions

diff --git a/arch/arm/include/asm/proc-fns.h b/arch/arm/include/asm/proc-fns.h
new file mode 100644
index 00000000..8ec535e1
--- /dev/null
+++ b/arch/arm/include/asm/proc-fns.h
@@ -0,0 +1,115 @@
+/*
+ *  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)(unsigned long pgd_phys, struct mm_struct *mm);
+	/*
+	 * Set a possibly extended PTE.  Non-extended PTEs should
+	 * ignore 'ext'.
+	 */
+	void (*set_pte_ext)(pte_t *ptep, pte_t pte, unsigned int ext);
+
+	/* 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(unsigned long pgd_phys, struct mm_struct *mm);
+extern void cpu_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext);
+extern void cpu_reset(unsigned long addr) __attribute__((noreturn));
+#else
+#define cpu_proc_init()			processor._proc_init()
+#define cpu_proc_fin()			processor._proc_fin()
+#define cpu_reset(addr)			processor.reset(addr)
+#define cpu_do_idle()			processor._do_idle()
+#define cpu_dcache_clean_area(addr,sz)	processor.dcache_clean_area(addr,sz)
+#define cpu_set_pte_ext(ptep,pte,ext)	processor.set_pte_ext(ptep,pte,ext)
+#define cpu_do_switch_mm(pgd,mm)	processor.switch_mm(pgd,mm)
+#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)
+
+#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
+
+#endif /* __ASSEMBLY__ */
+#endif /* __KERNEL__ */
+#endif /* __ASM_PROCFNS_H */