[IA64] pvops: define initialization hooks, pv_init_ops, for paravirtualized environment.

define pv_init_ops hooks which represents various initialization
hooks for paravirtualized environment. and add hooks.

Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 70 insertions, 0 deletions

diff --git a/include/asm-ia64/paravirt.h b/include/asm-ia64/paravirt.h
index 1032b216aea6..84d74c32eb98 100644
--- a/include/asm-ia64/paravirt.h
+++ b/include/asm-ia64/paravirt.h
@@ -55,11 +55,81 @@ static inline unsigned int get_kernel_rpl(void)
         return pv_info.kernel_rpl;
 }
 
+/******************************************************************************
+ * initialization hooks.
+ */
+struct rsvd_region;
+
+struct pv_init_ops {
+        void (*banner)(void);
+
+        int (*reserve_memory)(struct rsvd_region *region);
+
+        void (*arch_setup_early)(void);
+        void (*arch_setup_console)(char **cmdline_p);
+        int (*arch_setup_nomca)(void);
+
+        void (*post_smp_prepare_boot_cpu)(void);
+};
+
+extern struct pv_init_ops pv_init_ops;
+
+static inline void paravirt_banner(void)
+{
+        if (pv_init_ops.banner)
+                pv_init_ops.banner();
+}
+
+static inline int paravirt_reserve_memory(struct rsvd_region *region)
+{
+        if (pv_init_ops.reserve_memory)
+                return pv_init_ops.reserve_memory(region);
+        return 0;
+}
+
+static inline void paravirt_arch_setup_early(void)
+{
+        if (pv_init_ops.arch_setup_early)
+                pv_init_ops.arch_setup_early();
+}
+
+static inline void paravirt_arch_setup_console(char **cmdline_p)
+{
+        if (pv_init_ops.arch_setup_console)
+                pv_init_ops.arch_setup_console(cmdline_p);
+}
+
+static inline int paravirt_arch_setup_nomca(void)
+{
+        if (pv_init_ops.arch_setup_nomca)
+                return pv_init_ops.arch_setup_nomca();
+        return 0;
+}
+
+static inline void paravirt_post_smp_prepare_boot_cpu(void)
+{
+        if (pv_init_ops.post_smp_prepare_boot_cpu)
+                pv_init_ops.post_smp_prepare_boot_cpu();
+}
+
 #endif /* !__ASSEMBLY__ */
 
 #else
 /* fallback for native case */
 
+#ifndef __ASSEMBLY__
+
+#define paravirt_banner()                               do { } while (0)
+#define paravirt_reserve_memory(region)                 0
+
+#define paravirt_arch_setup_early()                     do { } while (0)
+#define paravirt_arch_setup_console(cmdline_p)          do { } while (0)
+#define paravirt_arch_setup_nomca()                     0
+#define paravirt_post_smp_prepare_boot_cpu()            do { } while (0)
+
+#endif /* __ASSEMBLY__ */
+
+
 #endif /* CONFIG_PARAVIRT_GUEST */
 
 #endif /* __ASM_PARAVIRT_H */