# HG changeset patch
# User yamahata@xxxxxxxxxxxxx
# Node ID 66dac877aa4264c42188a3cee6176cef940fd344
# Parent  290b8d621c031a9fa2c72a60f4ce37dfc6029191
introduce efi_memmap_walk_type() for the next dom0 builder patch.
PATCHNAME: efi_memmap_walk_type_xen

Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>

diff -r 290b8d621c03 -r 66dac877aa42 xen/arch/ia64/linux-xen/efi.c
--- a/xen/arch/ia64/linux-xen/efi.c	Mon Apr 24 22:27:59 2006 +0900
+++ b/xen/arch/ia64/linux-xen/efi.c	Mon Apr 24 22:28:00 2006 +0900
@@ -455,6 +455,27 @@ efi_memmap_walk_uc (efi_freemem_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 -r 290b8d621c03 -r 66dac877aa42 xen/include/asm-ia64/linux-xen/linux/efi.h
--- a/xen/include/asm-ia64/linux-xen/linux/efi.h	Mon Apr 24 22:27:59 2006 +0900
+++ b/xen/include/asm-ia64/linux-xen/linux/efi.h	Mon Apr 24 22:28:00 2006 +0900
@@ -293,6 +293,10 @@ extern void efi_map_pal_code (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);