[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>

5 files changed, 593 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 */
diff --git a/include/asm-powerpc/compat.h b/include/asm-powerpc/compat.h
new file mode 100644
index 00000000000..4db4360c4d4
--- /dev/null
+++ b/include/asm-powerpc/compat.h
@@ -0,0 +1,205 @@
+#ifndef _ASM_POWERPC_COMPAT_H
+#define _ASM_POWERPC_COMPAT_H
+/*
+ * Architecture specific compatibility types
+ */
+#include <linux/types.h>
+#include <linux/sched.h>
+
+#define COMPAT_USER_HZ	100
+
+typedef u32		compat_size_t;
+typedef s32		compat_ssize_t;
+typedef s32		compat_time_t;
+typedef s32		compat_clock_t;
+typedef s32		compat_pid_t;
+typedef u32		__compat_uid_t;
+typedef u32		__compat_gid_t;
+typedef u32		__compat_uid32_t;
+typedef u32		__compat_gid32_t;
+typedef u32		compat_mode_t;
+typedef u32		compat_ino_t;
+typedef u32		compat_dev_t;
+typedef s32		compat_off_t;
+typedef s64		compat_loff_t;
+typedef s16		compat_nlink_t;
+typedef u16		compat_ipc_pid_t;
+typedef s32		compat_daddr_t;
+typedef u32		compat_caddr_t;
+typedef __kernel_fsid_t	compat_fsid_t;
+typedef s32		compat_key_t;
+typedef s32		compat_timer_t;
+
+typedef s32		compat_int_t;
+typedef s32		compat_long_t;
+typedef u32		compat_uint_t;
+typedef u32		compat_ulong_t;
+
+struct compat_timespec {
+	compat_time_t	tv_sec;
+	s32		tv_nsec;
+};
+
+struct compat_timeval {
+	compat_time_t	tv_sec;
+	s32		tv_usec;
+};
+
+struct compat_stat {
+	compat_dev_t	st_dev;
+	compat_ino_t	st_ino;
+	compat_mode_t	st_mode;
+	compat_nlink_t	st_nlink;
+	__compat_uid32_t	st_uid;
+	__compat_gid32_t	st_gid;
+	compat_dev_t	st_rdev;
+	compat_off_t	st_size;
+	compat_off_t	st_blksize;
+	compat_off_t	st_blocks;
+	compat_time_t	st_atime;
+	u32		st_atime_nsec;
+	compat_time_t	st_mtime;
+	u32		st_mtime_nsec;
+	compat_time_t	st_ctime;
+	u32		st_ctime_nsec;
+	u32		__unused4[2];
+};
+
+struct compat_flock {
+	short		l_type;
+	short		l_whence;
+	compat_off_t	l_start;
+	compat_off_t	l_len;
+	compat_pid_t	l_pid;
+};
+
+#define F_GETLK64	12	/*  using 'struct flock64' */
+#define F_SETLK64	13
+#define F_SETLKW64	14
+
+struct compat_flock64 {
+	short		l_type;
+	short		l_whence;
+	compat_loff_t	l_start;
+	compat_loff_t	l_len;
+	compat_pid_t	l_pid;
+};
+
+struct compat_statfs {
+	int		f_type;
+	int		f_bsize;
+	int		f_blocks;
+	int		f_bfree;
+	int		f_bavail;
+	int		f_files;
+	int		f_ffree;
+	compat_fsid_t	f_fsid;
+	int		f_namelen;	/* SunOS ignores this field. */
+	int		f_frsize;
+	int		f_spare[5];
+};
+
+#define COMPAT_RLIM_OLD_INFINITY	0x7fffffff
+#define COMPAT_RLIM_INFINITY		0xffffffff
+
+typedef u32		compat_old_sigset_t;
+
+#define _COMPAT_NSIG		64
+#define _COMPAT_NSIG_BPW	32
+
+typedef u32		compat_sigset_word;
+
+#define COMPAT_OFF_T_MAX	0x7fffffff
+#define COMPAT_LOFF_T_MAX	0x7fffffffffffffffL
+
+/*
+ * A pointer passed in from user mode. This should not
+ * be used for syscall parameters, just declare them
+ * as pointers because the syscall entry code will have
+ * appropriately comverted them already.
+ */
+typedef	u32		compat_uptr_t;
+
+static inline void __user *compat_ptr(compat_uptr_t uptr)
+{
+	return (void __user *)(unsigned long)uptr;
+}
+
+static inline void __user *compat_alloc_user_space(long len)
+{
+	struct pt_regs *regs = current->thread.regs;
+	unsigned long usp = regs->gpr[1];
+
+	/*
+	 * We cant access below the stack pointer in the 32bit ABI and
+	 * can access 288 bytes in the 64bit ABI
+	 */
+	if (!(test_thread_flag(TIF_32BIT)))
+		usp -= 288;
+
+	return (void __user *) (usp - len);
+}
+
+/*
+ * ipc64_perm is actually 32/64bit clean but since the compat layer refers to
+ * it we may as well define it.
+ */
+struct compat_ipc64_perm {
+	compat_key_t key;
+	__compat_uid_t uid;
+	__compat_gid_t gid;
+	__compat_uid_t cuid;
+	__compat_gid_t cgid;
+	compat_mode_t mode;
+	unsigned int seq;
+	unsigned int __pad2;
+	unsigned long __unused1;	/* yes they really are 64bit pads */
+	unsigned long __unused2;
+};
+
+struct compat_semid64_ds {
+	struct compat_ipc64_perm sem_perm;
+	unsigned int __unused1;
+	compat_time_t sem_otime;
+	unsigned int __unused2;
+	compat_time_t sem_ctime;
+	compat_ulong_t sem_nsems;
+	compat_ulong_t __unused3;
+	compat_ulong_t __unused4;
+};
+
+struct compat_msqid64_ds {
+	struct compat_ipc64_perm msg_perm;
+	unsigned int __unused1;
+	compat_time_t msg_stime;
+	unsigned int __unused2;
+	compat_time_t msg_rtime;
+	unsigned int __unused3;
+	compat_time_t msg_ctime;
+	compat_ulong_t msg_cbytes;
+	compat_ulong_t msg_qnum;
+	compat_ulong_t msg_qbytes;
+	compat_pid_t msg_lspid;
+	compat_pid_t msg_lrpid;
+	compat_ulong_t __unused4;
+	compat_ulong_t __unused5;
+};
+
+struct compat_shmid64_ds {
+	struct compat_ipc64_perm shm_perm;
+	unsigned int __unused1;
+	compat_time_t shm_atime;
+	unsigned int __unused2;
+	compat_time_t shm_dtime;
+	unsigned int __unused3;
+	compat_time_t shm_ctime;
+	unsigned int __unused4;
+	compat_size_t shm_segsz;
+	compat_pid_t shm_cpid;
+	compat_pid_t shm_lpid;
+	compat_ulong_t shm_nattch;
+	compat_ulong_t __unused5;
+	compat_ulong_t __unused6;
+};
+
+#endif /* _ASM_POWERPC_COMPAT_H */
diff --git a/include/asm-powerpc/lppaca.h b/include/asm-powerpc/lppaca.h
new file mode 100644
index 00000000000..c1bedab1515
--- /dev/null
+++ b/include/asm-powerpc/lppaca.h
@@ -0,0 +1,131 @@
+/*
+ * lppaca.h
+ * Copyright (C) 2001  Mike Corrigan IBM Corporation
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+#ifndef _ASM_POWERPC_LPPACA_H
+#define _ASM_POWERPC_LPPACA_H
+
+//=============================================================================
+//
+//	This control block contains the data that is shared between the
+//	hypervisor (PLIC) and the OS.
+//
+//
+//----------------------------------------------------------------------------
+#include <asm/types.h>
+
+struct lppaca {
+//=============================================================================
+// CACHE_LINE_1 0x0000 - 0x007F Contains read-only data
+// NOTE: The xDynXyz fields are fields that will be dynamically changed by
+// PLIC when preparing to bring a processor online or when dispatching a
+// virtual processor!
+//=============================================================================
+	u32	desc;			// Eye catcher 0xD397D781	x00-x03
+	u16	size;			// Size of this struct		x04-x05
+	u16	reserved1;		// Reserved			x06-x07
+	u16	reserved2:14;		// Reserved			x08-x09
+	u8	shared_proc:1;		// Shared processor indicator	...
+	u8	secondary_thread:1;	// Secondary thread indicator	...
+	volatile u8 dyn_proc_status:8;	// Dynamic Status of this proc	x0A-x0A
+	u8	secondary_thread_count;	// Secondary thread count	x0B-x0B
+	volatile u16 dyn_hv_phys_proc_index;// Dynamic HV Physical Proc Index0C-x0D
+	volatile u16 dyn_hv_log_proc_index;// Dynamic HV Logical Proc Indexx0E-x0F
+	u32	decr_val;   		// Value for Decr programming 	x10-x13
+	u32	pmc_val;       		// Value for PMC regs         	x14-x17
+	volatile u32 dyn_hw_node_id;	// Dynamic Hardware Node id	x18-x1B
+	volatile u32 dyn_hw_proc_id;	// Dynamic Hardware Proc Id	x1C-x1F
+	volatile u32 dyn_pir;		// Dynamic ProcIdReg value	x20-x23
+	u32	dsei_data;           	// DSEI data                  	x24-x27
+	u64	sprg3;               	// SPRG3 value                	x28-x2F
+	u8	reserved3[80];		// Reserved			x30-x7F
+
+//=============================================================================
+// CACHE_LINE_2 0x0080 - 0x00FF Contains local read-write data
+//=============================================================================
+	// This Dword contains a byte for each type of interrupt that can occur.
+	// The IPI is a count while the others are just a binary 1 or 0.
+	union {
+		u64	any_int;
+		struct {
+			u16	reserved;	// Reserved - cleared by #mpasmbl
+			u8	xirr_int;	// Indicates xXirrValue is valid or Immed IO
+			u8	ipi_cnt;	// IPI Count
+			u8	decr_int;	// DECR interrupt occurred
+			u8	pdc_int;	// PDC interrupt occurred
+			u8	quantum_int;	// Interrupt quantum reached
+			u8	old_plic_deferred_ext_int;	// Old PLIC has a deferred XIRR pending
+		} fields;
+	} int_dword;
+
+	// Whenever any fields in this Dword are set then PLIC will defer the
+	// processing of external interrupts.  Note that PLIC will store the
+	// XIRR directly into the xXirrValue field so that another XIRR will
+	// not be presented until this one clears.  The layout of the low
+	// 4-bytes of this Dword is upto SLIC - PLIC just checks whether the
+	// entire Dword is zero or not.  A non-zero value in the low order
+	// 2-bytes will result in SLIC being granted the highest thread
+	// priority upon return.  A 0 will return to SLIC as medium priority.
+	u64	plic_defer_ints_area;	// Entire Dword
+
+	// Used to pass the real SRR0/1 from PLIC to SLIC as well as to
+	// pass the target SRR0/1 from SLIC to PLIC on a SetAsrAndRfid.
+	u64	saved_srr0;		// Saved SRR0                   x10-x17
+	u64	saved_srr1;		// Saved SRR1                   x18-x1F
+
+	// Used to pass parms from the OS to PLIC for SetAsrAndRfid
+	u64	saved_gpr3;		// Saved GPR3                   x20-x27
+	u64	saved_gpr4;		// Saved GPR4                   x28-x2F
+	u64	saved_gpr5;		// Saved GPR5                   x30-x37
+
+	u8	reserved4;		// Reserved			x38-x38
+	u8	cpuctls_task_attrs;	// Task attributes for cpuctls  x39-x39
+	u8	fpregs_in_use;		// FP regs in use               x3A-x3A
+	u8	pmcregs_in_use;		// PMC regs in use              x3B-x3B
+	volatile u32 saved_decr;	// Saved Decr Value             x3C-x3F
+	volatile u64 emulated_time_base;// Emulated TB for this thread  x40-x47
+	volatile u64 cur_plic_latency;	// Unaccounted PLIC latency     x48-x4F
+	u64	tot_plic_latency;	// Accumulated PLIC latency     x50-x57
+	u64	wait_state_cycles;	// Wait cycles for this proc    x58-x5F
+	u64	end_of_quantum;		// TB at end of quantum         x60-x67
+	u64	pdc_saved_sprg1;	// Saved SPRG1 for PMC int      x68-x6F
+	u64	pdc_saved_srr0;		// Saved SRR0 for PMC int       x70-x77
+	volatile u32 virtual_decr;	// Virtual DECR for shared procsx78-x7B
+	u16	slb_count;		// # of SLBs to maintain        x7C-x7D
+	u8	idle;			// Indicate OS is idle          x7E
+	u8	vmxregs_in_use;		// VMX registers in use         x7F
+
+
+//=============================================================================
+// CACHE_LINE_3 0x0100 - 0x007F: This line is shared with other processors
+//=============================================================================
+	// This is the yield_count.  An "odd" value (low bit on) means that
+	// the processor is yielded (either because of an OS yield or a PLIC
+	// preempt).  An even value implies that the processor is currently
+	// executing.
+	// NOTE: This value will ALWAYS be zero for dedicated processors and
+	// will NEVER be zero for shared processors (ie, initialized to a 1).
+	volatile u32 yield_count;	// PLIC increments each dispatchx00-x03
+	u8	reserved6[124];		// Reserved                     x04-x7F
+
+//=============================================================================
+// CACHE_LINE_4-5 0x0100 - 0x01FF Contains PMC interrupt data
+//=============================================================================
+	u8	pmc_save_area[256];	// PMC interrupt Area           x00-xFF
+};
+
+#endif /* _ASM_POWERPC_LPPACA_H */
diff --git a/include/asm-powerpc/paca.h b/include/asm-powerpc/paca.h
new file mode 100644
index 00000000000..92c765c35bd
--- /dev/null
+++ b/include/asm-powerpc/paca.h
@@ -0,0 +1,120 @@
+/*
+ * include/asm-powerpc/paca.h
+ *
+ * This control block defines the PACA which defines the processor
+ * specific data for each logical processor on the system.
+ * There are some pointers defined that are utilized by PLIC.
+ *
+ * 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.
+ */
+#ifndef _ASM_POWERPC_PACA_H
+#define _ASM_POWERPC_PACA_H
+
+#include	<linux/config.h>
+#include	<asm/types.h>
+#include	<asm/lppaca.h>
+#include	<asm/iseries/it_lp_reg_save.h>
+#include	<asm/mmu.h>
+
+register struct paca_struct *local_paca asm("r13");
+#define get_paca()	local_paca
+
+struct task_struct;
+
+/*
+ * Defines the layout of the paca.
+ *
+ * This structure is not directly accessed by firmware or the service
+ * processor except for the first two pointers that point to the
+ * lppaca area and the ItLpRegSave area for this CPU.  Both the
+ * lppaca and ItLpRegSave objects are currently contained within the
+ * PACA but they do not need to be.
+ */
+struct paca_struct {
+	/*
+	 * Because hw_cpu_id, unlike other paca fields, is accessed
+	 * routinely from other CPUs (from the IRQ code), we stick to
+	 * read-only (after boot) fields in the first cacheline to
+	 * avoid cacheline bouncing.
+	 */
+
+	/*
+	 * MAGIC: These first two pointers can't be moved - they're
+	 * accessed by the firmware
+	 */
+	struct lppaca *lppaca_ptr;	/* Pointer to LpPaca for PLIC */
+	struct ItLpRegSave *reg_save_ptr; /* Pointer to LpRegSave for PLIC */
+
+	/*
+	 * MAGIC: the spinlock functions in arch/ppc64/lib/locks.c
+	 * load lock_token and paca_index with a single lwz
+	 * instruction.  They must travel together and be properly
+	 * aligned.
+	 */
+	u16 lock_token;			/* Constant 0x8000, used in locks */
+	u16 paca_index;			/* Logical processor number */
+
+	u32 default_decr;		/* Default decrementer value */
+	u64 kernel_toc;			/* Kernel TOC address */
+	u64 stab_real;			/* Absolute address of segment table */
+	u64 stab_addr;			/* Virtual address of segment table */
+	void *emergency_sp;		/* pointer to emergency stack */
+	s16 hw_cpu_id;			/* Physical processor number */
+	u8 cpu_start;			/* At startup, processor spins until */
+					/* this becomes non-zero. */
+
+	/*
+	 * Now, starting in cacheline 2, the exception save areas
+	 */
+	/* used for most interrupts/exceptions */
+	u64 exgen[10] __attribute__((aligned(0x80)));
+	u64 exmc[10];		/* used for machine checks */
+	u64 exslb[10];		/* used for SLB/segment table misses
+ 				 * on the linear mapping */
+#ifdef CONFIG_PPC_64K_PAGES
+	pgd_t *pgdir;
+#endif /* CONFIG_PPC_64K_PAGES */
+
+	mm_context_t context;
+	u16 slb_cache[SLB_CACHE_ENTRIES];
+	u16 slb_cache_ptr;
+
+	/*
+	 * then miscellaneous read-write fields
+	 */
+	struct task_struct *__current;	/* Pointer to current */
+	u64 kstack;			/* Saved Kernel stack addr */
+	u64 stab_rr;			/* stab/slb round-robin counter */
+	u64 next_jiffy_update_tb;	/* TB value for next jiffy update */
+	u64 saved_r1;			/* r1 save for RTAS calls */
+	u64 saved_msr;			/* MSR saved here by enter_rtas */
+	u8 proc_enabled;		/* irq soft-enable flag */
+
+	/* not yet used */
+	u64 exdsi[8];		/* used for linear mapping hash table misses */
+
+	/*
+	 * iSeries structure which the hypervisor knows about -
+	 * this structure should not cross a page boundary.
+	 * The vpa_init/register_vpa call is now known to fail if the
+	 * lppaca structure crosses a page boundary.
+	 * The lppaca is also used on POWER5 pSeries boxes.
+	 * The lppaca is 640 bytes long, and cannot readily change
+	 * since the hypervisor knows its layout, so a 1kB
+	 * alignment will suffice to ensure that it doesn't
+	 * cross a page boundary.
+	 */
+	struct lppaca lppaca __attribute__((__aligned__(0x400)));
+#ifdef CONFIG_PPC_ISERIES
+	struct ItLpRegSave reg_save;
+#endif
+};
+
+extern struct paca_struct paca[];
+
+#endif /* _ASM_POWERPC_PACA_H */
diff --git a/include/asm-powerpc/tce.h b/include/asm-powerpc/tce.h
new file mode 100644
index 00000000000..d099d5200f9
--- /dev/null
+++ b/include/asm-powerpc/tce.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen, IBM Corporation
+ * Rewrite, cleanup:
+ * Copyright (C) 2004 Olof Johansson <olof@austin.ibm.com>, IBM Corporation
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+
+#ifndef _ASM_POWERPC_TCE_H
+#define _ASM_POWERPC_TCE_H
+
+/*
+ * Tces come in two formats, one for the virtual bus and a different
+ * format for PCI
+ */
+#define TCE_VB  0
+#define TCE_PCI 1
+
+/* TCE page size is 4096 bytes (1 << 12) */
+
+#define TCE_SHIFT	12
+#define TCE_PAGE_SIZE	(1 << TCE_SHIFT)
+#define TCE_PAGE_FACTOR	(PAGE_SHIFT - TCE_SHIFT)
+
+
+/* tce_entry
+ * Used by pSeries (SMP) and iSeries/pSeries LPAR, but there it's
+ * abstracted so layout is irrelevant.
+ */
+union tce_entry {
+   	unsigned long te_word;
+	struct {
+		unsigned int  tb_cacheBits :6;	/* Cache hash bits - not used */
+		unsigned int  tb_rsvd      :6;
+		unsigned long tb_rpn       :40;	/* Real page number */
+		unsigned int  tb_valid     :1;	/* Tce is valid (vb only) */
+		unsigned int  tb_allio     :1;	/* Tce is valid for all lps (vb only) */
+		unsigned int  tb_lpindex   :8;	/* LpIndex for user of TCE (vb only) */
+		unsigned int  tb_pciwr     :1;	/* Write allowed (pci only) */
+		unsigned int  tb_rdwr      :1;	/* Read allowed  (pci), Write allowed (vb) */
+	} te_bits;
+#define te_cacheBits te_bits.tb_cacheBits
+#define te_rpn       te_bits.tb_rpn
+#define te_valid     te_bits.tb_valid
+#define te_allio     te_bits.tb_allio
+#define te_lpindex   te_bits.tb_lpindex
+#define te_pciwr     te_bits.tb_pciwr
+#define te_rdwr      te_bits.tb_rdwr
+};
+
+
+#endif /* _ASM_POWERPC_TCE_H */