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, 219 insertions, 0 deletions

diff --git a/arch/m68k/include/asm/tlbflush_mm.h b/arch/m68k/include/asm/tlbflush_mm.h
new file mode 100644
index 00000000000..acb6bf21a32
--- /dev/null
+++ b/arch/m68k/include/asm/tlbflush_mm.h
@@ -0,0 +1,219 @@
+#ifndef _M68K_TLBFLUSH_H
+#define _M68K_TLBFLUSH_H
+
+
+#ifndef CONFIG_SUN3
+
+#include <asm/current.h>
+
+static inline void flush_tlb_kernel_page(void *addr)
+{
+	if (CPU_IS_040_OR_060) {
+		mm_segment_t old_fs = get_fs();
+		set_fs(KERNEL_DS);
+		__asm__ __volatile__(".chip 68040\n\t"
+				     "pflush (%0)\n\t"
+				     ".chip 68k"
+				     : : "a" (addr));
+		set_fs(old_fs);
+	} else if (CPU_IS_020_OR_030)
+		__asm__ __volatile__("pflush #4,#4,(%0)" : : "a" (addr));
+}
+
+/*
+ * flush all user-space atc entries.
+ */
+static inline void __flush_tlb(void)
+{
+	if (CPU_IS_040_OR_060)
+		__asm__ __volatile__(".chip 68040\n\t"
+				     "pflushan\n\t"
+				     ".chip 68k");
+	else if (CPU_IS_020_OR_030)
+		__asm__ __volatile__("pflush #0,#4");
+}
+
+static inline void __flush_tlb040_one(unsigned long addr)
+{
+	__asm__ __volatile__(".chip 68040\n\t"
+			     "pflush (%0)\n\t"
+			     ".chip 68k"
+			     : : "a" (addr));
+}
+
+static inline void __flush_tlb_one(unsigned long addr)
+{
+	if (CPU_IS_040_OR_060)
+		__flush_tlb040_one(addr);
+	else if (CPU_IS_020_OR_030)
+		__asm__ __volatile__("pflush #0,#4,(%0)" : : "a" (addr));
+}
+
+#define flush_tlb() __flush_tlb()
+
+/*
+ * flush all atc entries (both kernel and user-space entries).
+ */
+static inline void flush_tlb_all(void)
+{
+	if (CPU_IS_040_OR_060)
+		__asm__ __volatile__(".chip 68040\n\t"
+				     "pflusha\n\t"
+				     ".chip 68k");
+	else if (CPU_IS_020_OR_030)
+		__asm__ __volatile__("pflusha");
+}
+
+static inline void flush_tlb_mm(struct mm_struct *mm)
+{
+	if (mm == current->active_mm)
+		__flush_tlb();
+}
+
+static inline void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr)
+{
+	if (vma->vm_mm == current->active_mm) {
+		mm_segment_t old_fs = get_fs();
+		set_fs(USER_DS);
+		__flush_tlb_one(addr);
+		set_fs(old_fs);
+	}
+}
+
+static inline void flush_tlb_range(struct vm_area_struct *vma,
+				   unsigned long start, unsigned long end)
+{
+	if (vma->vm_mm == current->active_mm)
+		__flush_tlb();
+}
+
+static inline void flush_tlb_kernel_range(unsigned long start, unsigned long end)
+{
+	flush_tlb_all();
+}
+
+#else
+
+
+/* Reserved PMEGs. */
+extern char sun3_reserved_pmeg[SUN3_PMEGS_NUM];
+extern unsigned long pmeg_vaddr[SUN3_PMEGS_NUM];
+extern unsigned char pmeg_alloc[SUN3_PMEGS_NUM];
+extern unsigned char pmeg_ctx[SUN3_PMEGS_NUM];
+
+/* Flush all userspace mappings one by one...  (why no flush command,
+   sun?) */
+static inline void flush_tlb_all(void)
+{
+       unsigned long addr;
+       unsigned char ctx, oldctx;
+
+       oldctx = sun3_get_context();
+       for(addr = 0x00000000; addr < TASK_SIZE; addr += SUN3_PMEG_SIZE) {
+	       for(ctx = 0; ctx < 8; ctx++) {
+		       sun3_put_context(ctx);
+		       sun3_put_segmap(addr, SUN3_INVALID_PMEG);
+	       }
+       }
+
+       sun3_put_context(oldctx);
+       /* erase all of the userspace pmeg maps, we've clobbered them
+	  all anyway */
+       for(addr = 0; addr < SUN3_INVALID_PMEG; addr++) {
+	       if(pmeg_alloc[addr] == 1) {
+		       pmeg_alloc[addr] = 0;
+		       pmeg_ctx[addr] = 0;
+		       pmeg_vaddr[addr] = 0;
+	       }
+       }
+
+}
+
+/* Clear user TLB entries within the context named in mm */
+static inline void flush_tlb_mm (struct mm_struct *mm)
+{
+     unsigned char oldctx;
+     unsigned char seg;
+     unsigned long i;
+
+     oldctx = sun3_get_context();
+     sun3_put_context(mm->context);
+
+     for(i = 0; i < TASK_SIZE; i += SUN3_PMEG_SIZE) {
+	     seg = sun3_get_segmap(i);
+	     if(seg == SUN3_INVALID_PMEG)
+		     continue;
+
+	     sun3_put_segmap(i, SUN3_INVALID_PMEG);
+	     pmeg_alloc[seg] = 0;
+	     pmeg_ctx[seg] = 0;
+	     pmeg_vaddr[seg] = 0;
+     }
+
+     sun3_put_context(oldctx);
+
+}
+
+/* Flush a single TLB page. In this case, we're limited to flushing a
+   single PMEG */
+static inline void flush_tlb_page (struct vm_area_struct *vma,
+				   unsigned long addr)
+{
+	unsigned char oldctx;
+	unsigned char i;
+
+	oldctx = sun3_get_context();
+	sun3_put_context(vma->vm_mm->context);
+	addr &= ~SUN3_PMEG_MASK;
+	if((i = sun3_get_segmap(addr)) != SUN3_INVALID_PMEG)
+	{
+		pmeg_alloc[i] = 0;
+		pmeg_ctx[i] = 0;
+		pmeg_vaddr[i] = 0;
+		sun3_put_segmap (addr,  SUN3_INVALID_PMEG);
+	}
+	sun3_put_context(oldctx);
+
+}
+/* Flush a range of pages from TLB. */
+
+static inline void flush_tlb_range (struct vm_area_struct *vma,
+		      unsigned long start, unsigned long end)
+{
+	struct mm_struct *mm = vma->vm_mm;
+	unsigned char seg, oldctx;
+
+	start &= ~SUN3_PMEG_MASK;
+
+	oldctx = sun3_get_context();
+	sun3_put_context(mm->context);
+
+	while(start < end)
+	{
+		if((seg = sun3_get_segmap(start)) == SUN3_INVALID_PMEG)
+		     goto next;
+		if(pmeg_ctx[seg] == mm->context) {
+			pmeg_alloc[seg] = 0;
+			pmeg_ctx[seg] = 0;
+			pmeg_vaddr[seg] = 0;
+		}
+		sun3_put_segmap(start, SUN3_INVALID_PMEG);
+	next:
+		start += SUN3_PMEG_SIZE;
+	}
+}
+
+static inline void flush_tlb_kernel_range(unsigned long start, unsigned long end)
+{
+	flush_tlb_all();
+}
+
+/* Flush kernel page from TLB. */
+static inline void flush_tlb_kernel_page (unsigned long addr)
+{
+	sun3_put_segmap (addr & ~(SUN3_PMEG_SIZE - 1), SUN3_INVALID_PMEG);
+}
+
+#endif
+
+#endif /* _M68K_TLBFLUSH_H */