[PATCH] ppc64: pgtable.h and other header cleanups
This patch started as simply removing a few never-used macros from
asm-ppc64/pgtable.h, then kind of grew. It now makes a bunch of
cleanups to the ppc64 low-level header files (with corresponding
changes to .c files where necessary) such as:
- Abolishing never-used macros
- Eliminating multiple #defines with the same purpose
- Removing pointless macros (cases where just expanding the
macro everywhere turns out clearer and more sensible)
- Removing some cases where macros which could be defined in
terms of each other weren't
- Moving imalloc() related definitions from pgtable.h to their
own header file (imalloc.h)
- Re-arranging headers to group things more logically
- Moving all VSID allocation related things to mmu.h, instead
of being split between mmu.h and mmu_context.h
- Removing some reserved space for flags from the PMD - we're
not using it.
- Fix some bugs which broke compile with STRICT_MM_TYPECHECKS.
Signed-off-by: David Gibson <dwg@au1.ibm.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/include/asm-ppc64/imalloc.h b/include/asm-ppc64/imalloc.h
new file mode 100644
index 0000000..3a45e91
--- /dev/null
+++ b/include/asm-ppc64/imalloc.h
@@ -0,0 +1,24 @@
+#ifndef _PPC64_IMALLOC_H
+#define _PPC64_IMALLOC_H
+
+/*
+ * Define the address range of the imalloc VM area.
+ */
+#define PHBS_IO_BASE IOREGIONBASE
+#define IMALLOC_BASE (IOREGIONBASE + 0x80000000ul) /* Reserve 2 gigs for PHBs */
+#define IMALLOC_END (IOREGIONBASE + EADDR_MASK)
+
+
+/* imalloc region types */
+#define IM_REGION_UNUSED 0x1
+#define IM_REGION_SUBSET 0x2
+#define IM_REGION_EXISTS 0x4
+#define IM_REGION_OVERLAP 0x8
+#define IM_REGION_SUPERSET 0x10
+
+extern struct vm_struct * im_get_free_area(unsigned long size);
+extern struct vm_struct * im_get_area(unsigned long v_addr, unsigned long size,
+ int region_type);
+unsigned long im_free(void *addr);
+
+#endif /* _PPC64_IMALLOC_H */