[IA64] dom0 vp model linux part: import agp.h from linux-2.6.16-rc3

[note: verified same as linux-2.6.16]

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

diff --git a/linux-2.6-xen-sparse/include/asm-ia64/agp.h b/linux-2.6-xen-sparse/include/asm-ia64/agp.h
new file mode 100644 (file)
index 0000000..4e517f0
--- /dev/null
+++ b/linux-2.6-xen-sparse/include/asm-ia64/agp.h
@@ -0,0 +1,31 @@
+#ifndef _ASM_IA64_AGP_H
+#define _ASM_IA64_AGP_H
+
+/*
+ * IA-64 specific AGP definitions.
+ *
+ * Copyright (C) 2002-2003 Hewlett-Packard Co
+ *     David Mosberger-Tang <davidm@hpl.hp.com>
+ */
+
+/*
+ * To avoid memory-attribute aliasing issues, we require that the AGPGART engine operate
+ * in coherent mode, which lets us map the AGP memory as normal (write-back) memory
+ * (unlike x86, where it gets mapped "write-coalescing").
+ */
+#define map_page_into_agp(page)                /* nothing */
+#define unmap_page_from_agp(page)      /* nothing */
+#define flush_agp_mappings()           /* nothing */
+#define flush_agp_cache()              mb()
+
+/* Convert a physical address to an address suitable for the GART. */
+#define phys_to_gart(x) (x)
+#define gart_to_phys(x) (x)
+
+/* GATT allocation. Returns/accepts GATT kernel virtual address. */
+#define alloc_gatt_pages(order)                \
+       ((char *)__get_free_pages(GFP_KERNEL, (order)))
+#define free_gatt_pages(table, order)  \
+       free_pages((unsigned long)(table), (order))
+
+#endif /* _ASM_IA64_AGP_H */