#ifndef _LINUX_SWSUSP_H
#define _LINUX_SWSUSP_H
-#if defined(CONFIG_X86) || defined(CONFIG_FRV) || defined(CONFIG_PPC32)
+#if defined(CONFIG_X86) || defined(CONFIG_FRV) || defined(CONFIG_PPC32) || defined(CONFIG_PPC64)
#include <asm/suspend.h>
#endif
#include <linux/swap.h>
static inline void pm_restore_console(void) {}
#endif
+/**
+ * struct hibernation_ops - hibernation platform support
+ *
+ * The methods in this structure allow a platform to override the default
+ * mechanism of shutting down the machine during a hibernation transition.
+ *
+ * All three methods must be assigned.
+ *
+ * @prepare: prepare system for hibernation
+ * @enter: shut down system after state has been saved to disk
+ * @finish: finish/clean up after state has been reloaded
+ */
+struct hibernation_ops {
+ int (*prepare)(void);
+ int (*enter)(void);
+ void (*finish)(void);
+};
+
#if defined(CONFIG_PM) && defined(CONFIG_SOFTWARE_SUSPEND)
-/* kernel/power/swsusp.c */
-extern int software_suspend(void);
/* kernel/power/snapshot.c */
-extern void __init register_nosave_region(unsigned long, unsigned long);
+extern void __register_nosave_region(unsigned long b, unsigned long e, int km);
+static inline void register_nosave_region(unsigned long b, unsigned long e)
+{
+ __register_nosave_region(b, e, 0);
+}
+static inline void register_nosave_region_late(unsigned long b, unsigned long e)
+{
+ __register_nosave_region(b, e, 1);
+}
extern int swsusp_page_is_forbidden(struct page *);
extern void swsusp_set_page_free(struct page *);
extern void swsusp_unset_page_free(struct page *);
extern unsigned long get_safe_page(gfp_t gfp_mask);
-#else
-static inline int software_suspend(void)
-{
- printk("Warning: fake suspend called\n");
- return -ENOSYS;
-}
+extern void hibernation_set_ops(struct hibernation_ops *ops);
+extern int hibernate(void);
+#else
static inline void register_nosave_region(unsigned long b, unsigned long e) {}
+static inline void register_nosave_region_late(unsigned long b, unsigned long e) {}
static inline int swsusp_page_is_forbidden(struct page *p) { return 0; }
static inline void swsusp_set_page_free(struct page *p) {}
static inline void swsusp_unset_page_free(struct page *p) {}
+
+static inline void hibernation_set_ops(struct hibernation_ops *ops) {}
+static inline int hibernate(void) { return -ENOSYS; }
#endif /* defined(CONFIG_PM) && defined(CONFIG_SOFTWARE_SUSPEND) */
void save_processor_state(void);
void __save_processor_state(struct saved_context *ctxt);
void __restore_processor_state(struct saved_context *ctxt);
-/*
- * XXX: We try to keep some more pages free so that I/O operations succeed
- * without paging. Might this be more?
- */
-#define PAGES_FOR_IO 1024
-
#endif /* _LINUX_SWSUSP_H */