[IA64] introduce efi_memmap_walk_type

introduce efi_memmap_walk_type() for the next dom0 builder patch.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>

diff --git a/xen/arch/ia64/linux-xen/efi.c b/xen/arch/ia64/linux-xen/efi.c
index 96be4b989020213b96dc9cbda717181d10bf57a4..488e372e1c692d83237d04462b0701d9cc7fad50 100644 (file)
--- a/xen/arch/ia64/linux-xen/efi.c
+++ b/xen/arch/ia64/linux-xen/efi.c
@@ -455,6 +455,27 @@ efi_memmap_walk_uc (efi_freemem_callback_t callback)
        }
 }
 
+#ifdef XEN
+void
+efi_memmap_walk_type(u32 type, efi_walk_type_callback_t callback, void *arg)
+{
+       void *efi_map_start, *efi_map_end, *p;
+       efi_memory_desc_t *md;
+       u64 efi_desc_size;
+
+       efi_map_start = __va(ia64_boot_param->efi_memmap);
+       efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size;
+       efi_desc_size = ia64_boot_param->efi_memdesc_size;
+
+       for (p = efi_map_start; p < efi_map_end; p += efi_desc_size) {
+               md = p;
+               if (md->type == type) {
+                       if ((*callback)(md, arg) < 0)
+                               return;
+               }
+       }
+}
+#endif
 
 /*
  * Look for the PAL_CODE region reported by EFI and maps it using an

diff --git a/xen/include/asm-ia64/linux-xen/linux/efi.h b/xen/include/asm-ia64/linux-xen/linux/efi.h
index 73781ec165b40a96e92f98c6701daa27393ea3f3..6ec3c93990d0db38785c532acdac9bb0438c27f0 100644 (file)
--- a/xen/include/asm-ia64/linux-xen/linux/efi.h
+++ b/xen/include/asm-ia64/linux-xen/linux/efi.h
@@ -293,6 +293,10 @@ extern void *efi_get_pal_addr (void);
 extern void efi_map_pal_code (void);
 extern void efi_map_memmap(void);
 extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg);
+#ifdef XEN
+typedef int (*efi_walk_type_callback_t)(efi_memory_desc_t *md, void *arg);
+extern void efi_memmap_walk_type(u32 type, efi_walk_type_callback_t callback, void *arg);
+#endif
 extern void efi_gettimeofday (struct timespec *ts);
 extern void efi_enter_virtual_mode (void);     /* switch EFI to virtual mode, if possible */
 extern u64 efi_get_iobase (void);