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authorDavid Gibson <david@gibson.dropbear.id.au>2005-11-09 13:38:01 +1100
committerPaul Mackerras <paulus@samba.org>2005-11-10 11:24:04 +1100
commit8882a4da1c932c9f311c9f739e6719adea3e25d9 (patch)
tree1cf5e23780468d35305cde874f31c6223693908f /include/asm-powerpc/abs_addr.h
parent584224e4095d8abcf2bef38efacc291be9a44c20 (diff)
[PATCH] powerpc: Move various ppc64 files with no ppc32 equivalent to powerpc
This patch moves a bunch of files from arch/ppc64 and include/asm-ppc64 which have no equivalents in ppc32 code into arch/powerpc and include/asm-powerpc. The file affected are: abs_addr.h compat.h lppaca.h paca.h tce.h cpu_setup_power4.S ioctl32.c firmware.c pacaData.c The only changes apart from the move and corresponding Makefile changes are: - #ifndef/#define in includes updated to _ASM_POWERPC_ form - trailing whitespace removed - comments giving full paths removed - pacaData.c renamed paca.c to remove studlyCaps - Misplaced { moved in lppaca.h Built and booted on POWER5 LPAR (ARCH=powerpc and ARCH=ppc64), built for 32-bit powermac (ARCH=powerpc). Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/abs_addr.h')
-rw-r--r--include/asm-powerpc/abs_addr.h73
1 files changed, 73 insertions, 0 deletions
diff --git a/include/asm-powerpc/abs_addr.h b/include/asm-powerpc/abs_addr.h
new file mode 100644
index 00000000000..18415108fc5
--- /dev/null
+++ b/include/asm-powerpc/abs_addr.h
@@ -0,0 +1,73 @@
+#ifndef _ASM_POWERPC_ABS_ADDR_H
+#define _ASM_POWERPC_ABS_ADDR_H
+
+#include <linux/config.h>
+
+/*
+ * c 2001 PPC 64 Team, IBM Corp
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <asm/types.h>
+#include <asm/page.h>
+#include <asm/prom.h>
+#include <asm/lmb.h>
+#include <asm/firmware.h>
+
+struct mschunks_map {
+ unsigned long num_chunks;
+ unsigned long chunk_size;
+ unsigned long chunk_shift;
+ unsigned long chunk_mask;
+ u32 *mapping;
+};
+
+extern struct mschunks_map mschunks_map;
+
+/* Chunks are 256 KB */
+#define MSCHUNKS_CHUNK_SHIFT (18)
+#define MSCHUNKS_CHUNK_SIZE (1UL << MSCHUNKS_CHUNK_SHIFT)
+#define MSCHUNKS_OFFSET_MASK (MSCHUNKS_CHUNK_SIZE - 1)
+
+static inline unsigned long chunk_to_addr(unsigned long chunk)
+{
+ return chunk << MSCHUNKS_CHUNK_SHIFT;
+}
+
+static inline unsigned long addr_to_chunk(unsigned long addr)
+{
+ return addr >> MSCHUNKS_CHUNK_SHIFT;
+}
+
+static inline unsigned long phys_to_abs(unsigned long pa)
+{
+ unsigned long chunk;
+
+ /* This is a no-op on non-iSeries */
+ if (!firmware_has_feature(FW_FEATURE_ISERIES))
+ return pa;
+
+ chunk = addr_to_chunk(pa);
+
+ if (chunk < mschunks_map.num_chunks)
+ chunk = mschunks_map.mapping[chunk];
+
+ return chunk_to_addr(chunk) + (pa & MSCHUNKS_OFFSET_MASK);
+}
+
+/* Convenience macros */
+#define virt_to_abs(va) phys_to_abs(__pa(va))
+#define abs_to_virt(aa) __va(aa)
+
+/*
+ * Converts Virtual Address to Real Address for
+ * Legacy iSeries Hypervisor calls
+ */
+#define iseries_hv_addr(virtaddr) \
+ (0x8000000000000000 | virt_to_abs(virtaddr))
+
+#endif /* _ASM_POWERPC_ABS_ADDR_H */