m68k,m68knommu: merge header files

Merge header files for m68k and m68knommu to the single location:

    arch/m68k/include/asm

The majority of this patch was the result of the
script that is included in the changelog below.

The script was originally written by Arnd Bergman and
exten by me to cover a few more files.

When the header files differed the script uses the following:

The original m68k file is named <file>_mm.h  [mm for memory manager]
The m68knommu file is named <file>_no.h [no for no memory manager]

The files uses the following include guard:

This include gaurd works as the m68knommu toolchain set
the __uClinux__ symbol - so this should work in userspace too.

Merging the header files for m68k and m68knommu exposes the
(unexpected?) ABI differences thus it is easier to actually
identify these and thus to fix them.

The commit has been build tested with both a m68k and
a m68knommu toolchain - with success.

The commit has also been tested with "make headers_check"
and this patch fixes make headers_check for m68knommu.

The script used:
TARGET=arch/m68k/include/asm
SOURCE=arch/m68knommu/include/asm

INCLUDE="cachectl.h errno.h fcntl.h hwtest.h ioctls.h ipcbuf.h \
linkage.h math-emu.h md.h mman.h movs.h msgbuf.h openprom.h \
oplib.h poll.h posix_types.h resource.h rtc.h sembuf.h shmbuf.h \
shm.h shmparam.h socket.h sockios.h spinlock.h statfs.h stat.h \
termbits.h termios.h tlb.h types.h user.h"

EQUAL="auxvec.h cputime.h device.h emergency-restart.h futex.h \
ioctl.h irq_regs.h kdebug.h local.h mutex.h percpu.h \
sections.h topology.h"

NOMUUFILES="anchor.h bootstd.h coldfire.h commproc.h dbg.h \
elia.h flat.h m5206sim.h m520xsim.h m523xsim.h m5249sim.h \
m5272sim.h m527xsim.h m528xsim.h m5307sim.h m532xsim.h \
m5407sim.h m68360_enet.h m68360.h m68360_pram.h m68360_quicc.h \
m68360_regs.h MC68328.h MC68332.h MC68EZ328.h MC68VZ328.h \
mcfcache.h mcfdma.h mcfmbus.h mcfne.h mcfpci.h mcfpit.h \
mcfsim.h mcfsmc.h mcftimer.h mcfuart.h mcfwdebug.h \
nettel.h quicc_simple.h smp.h"

FILES="atomic.h bitops.h bootinfo.h bug.h bugs.h byteorder.h cache.h \
cacheflush.h checksum.h current.h delay.h div64.h \
dma-mapping.h dma.h elf.h entry.h fb.h fpu.h hardirq.h hw_irq.h io.h \
irq.h kmap_types.h machdep.h mc146818rtc.h mmu.h mmu_context.h \
module.h page.h page_offset.h param.h pci.h pgalloc.h \
pgtable.h processor.h ptrace.h scatterlist.h segment.h \
setup.h sigcontext.h siginfo.h signal.h string.h system.h swab.h \
thread_info.h timex.h tlbflush.h traps.h uaccess.h ucontext.h \
unaligned.h unistd.h"

mergefile() {
	BASE=${1%.h}
	git mv ${SOURCE}/$1 ${TARGET}/${BASE}_no.h
	git mv ${TARGET}/$1 ${TARGET}/${BASE}_mm.h

cat << EOF > ${TARGET}/$1
EOF

	git add ${TARGET}/$1
}

set -e

mkdir -p ${TARGET}

git mv include/asm-m68k/* ${TARGET}
rmdir include/asm-m68k

git rm ${SOURCE}/Kbuild
for F in $INCLUDE $EQUAL; do
	git rm ${SOURCE}/$F
done

for F in $NOMUUFILES; do
	git mv ${SOURCE}/$F ${TARGET}/$F
done

for F in $FILES ; do
	mergefile $F
done

rmdir arch/m68knommu/include/asm
rmdir arch/m68knommu/include

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>

1 files changed, 196 insertions, 0 deletions

diff --git a/arch/m68k/include/asm/atomic_mm.h b/arch/m68k/include/asm/atomic_mm.h
new file mode 100644
index 000000000000..eb0ab9d4ee77
--- /dev/null
+++ b/arch/m68k/include/asm/atomic_mm.h
@@ -0,0 +1,196 @@
+#ifndef __ARCH_M68K_ATOMIC__
+#define __ARCH_M68K_ATOMIC__
+
+#include <linux/types.h>
+#include <asm/system.h>
+
+/*
+ * Atomic operations that C can't guarantee us.  Useful for
+ * resource counting etc..
+ */
+
+/*
+ * We do not have SMP m68k systems, so we don't have to deal with that.
+ */
+
+#define ATOMIC_INIT(i)  { (i) }
+
+#define atomic_read(v)          ((v)->counter)
+#define atomic_set(v, i)        (((v)->counter) = i)
+
+static inline void atomic_add(int i, atomic_t *v)
+{
+        __asm__ __volatile__("addl %1,%0" : "+m" (*v) : "id" (i));
+}
+
+static inline void atomic_sub(int i, atomic_t *v)
+{
+        __asm__ __volatile__("subl %1,%0" : "+m" (*v) : "id" (i));
+}
+
+static inline void atomic_inc(atomic_t *v)
+{
+        __asm__ __volatile__("addql #1,%0" : "+m" (*v));
+}
+
+static inline void atomic_dec(atomic_t *v)
+{
+        __asm__ __volatile__("subql #1,%0" : "+m" (*v));
+}
+
+static inline int atomic_dec_and_test(atomic_t *v)
+{
+        char c;
+        __asm__ __volatile__("subql #1,%1; seq %0" : "=d" (c), "+m" (*v));
+        return c != 0;
+}
+
+static inline int atomic_inc_and_test(atomic_t *v)
+{
+        char c;
+        __asm__ __volatile__("addql #1,%1; seq %0" : "=d" (c), "+m" (*v));
+        return c != 0;
+}
+
+#ifdef CONFIG_RMW_INSNS
+
+static inline int atomic_add_return(int i, atomic_t *v)
+{
+        int t, tmp;
+
+        __asm__ __volatile__(
+                        "1:     movel %2,%1\n"
+                        "       addl %3,%1\n"
+                        "       casl %2,%1,%0\n"
+                        "       jne 1b"
+                        : "+m" (*v), "=&d" (t), "=&d" (tmp)
+                        : "g" (i), "2" (atomic_read(v)));
+        return t;
+}
+
+static inline int atomic_sub_return(int i, atomic_t *v)
+{
+        int t, tmp;
+
+        __asm__ __volatile__(
+                        "1:     movel %2,%1\n"
+                        "       subl %3,%1\n"
+                        "       casl %2,%1,%0\n"
+                        "       jne 1b"
+                        : "+m" (*v), "=&d" (t), "=&d" (tmp)
+                        : "g" (i), "2" (atomic_read(v)));
+        return t;
+}
+
+#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
+#else /* !CONFIG_RMW_INSNS */
+
+static inline int atomic_add_return(int i, atomic_t * v)
+{
+        unsigned long flags;
+        int t;
+
+        local_irq_save(flags);
+        t = atomic_read(v);
+        t += i;
+        atomic_set(v, t);
+        local_irq_restore(flags);
+
+        return t;
+}
+
+static inline int atomic_sub_return(int i, atomic_t * v)
+{
+        unsigned long flags;
+        int t;
+
+        local_irq_save(flags);
+        t = atomic_read(v);
+        t -= i;
+        atomic_set(v, t);
+        local_irq_restore(flags);
+
+        return t;
+}
+
+static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
+{
+        unsigned long flags;
+        int prev;
+
+        local_irq_save(flags);
+        prev = atomic_read(v);
+        if (prev == old)
+                atomic_set(v, new);
+        local_irq_restore(flags);
+        return prev;
+}
+
+static inline int atomic_xchg(atomic_t *v, int new)
+{
+        unsigned long flags;
+        int prev;
+
+        local_irq_save(flags);
+        prev = atomic_read(v);
+        atomic_set(v, new);
+        local_irq_restore(flags);
+        return prev;
+}
+
+#endif /* !CONFIG_RMW_INSNS */
+
+#define atomic_dec_return(v)    atomic_sub_return(1, (v))
+#define atomic_inc_return(v)    atomic_add_return(1, (v))
+
+static inline int atomic_sub_and_test(int i, atomic_t *v)
+{
+        char c;
+        __asm__ __volatile__("subl %2,%1; seq %0" : "=d" (c), "+m" (*v): "g" (i));
+        return c != 0;
+}
+
+static inline int atomic_add_negative(int i, atomic_t *v)
+{
+        char c;
+        __asm__ __volatile__("addl %2,%1; smi %0" : "=d" (c), "+m" (*v): "g" (i));
+        return c != 0;
+}
+
+static inline void atomic_clear_mask(unsigned long mask, unsigned long *v)
+{
+        __asm__ __volatile__("andl %1,%0" : "+m" (*v) : "id" (~(mask)));
+}
+
+static inline void atomic_set_mask(unsigned long mask, unsigned long *v)
+{
+        __asm__ __volatile__("orl %1,%0" : "+m" (*v) : "id" (mask));
+}
+
+static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
+{
+        int c, old;
+        c = atomic_read(v);
+        for (;;) {
+                if (unlikely(c == (u)))
+                        break;
+                old = atomic_cmpxchg((v), c, c + (a));
+                if (likely(old == c))
+                        break;
+                c = old;
+        }
+        return c != (u);
+}
+
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
+/* Atomic operations are already serializing */
+#define smp_mb__before_atomic_dec()     barrier()
+#define smp_mb__after_atomic_dec()      barrier()
+#define smp_mb__before_atomic_inc()     barrier()
+#define smp_mb__after_atomic_inc()      barrier()
+
+#include <asm-generic/atomic.h>
+#endif /* __ARCH_M68K_ATOMIC __ */