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, 234 insertions, 0 deletions

diff --git a/arch/m68k/include/asm/sun3_pgtable.h b/arch/m68k/include/asm/sun3_pgtable.h
new file mode 100644
index 000000000000..f847ec732d62
--- /dev/null
+++ b/arch/m68k/include/asm/sun3_pgtable.h
@@ -0,0 +1,234 @@
+#ifndef _SUN3_PGTABLE_H
+#define _SUN3_PGTABLE_H
+
+#include <asm/sun3mmu.h>
+
+#ifndef __ASSEMBLY__
+#include <asm/virtconvert.h>
+#include <linux/linkage.h>
+
+/*
+ * This file contains all the things which change drastically for the sun3
+ * pagetable stuff, to avoid making too much of a mess of the generic m68k
+ * `pgtable.h'; this should only be included from the generic file. --m
+ */
+
+/* For virtual address to physical address conversion */
+#define VTOP(addr)	__pa(addr)
+#define PTOV(addr)	__va(addr)
+
+
+#endif	/* !__ASSEMBLY__ */
+
+/* These need to be defined for compatibility although the sun3 doesn't use them */
+#define _PAGE_NOCACHE030 0x040
+#define _CACHEMASK040   (~0x060)
+#define _PAGE_NOCACHE_S 0x040
+
+/* Page protection values within PTE. */
+#define SUN3_PAGE_VALID     (0x80000000)
+#define SUN3_PAGE_WRITEABLE (0x40000000)
+#define SUN3_PAGE_SYSTEM    (0x20000000)
+#define SUN3_PAGE_NOCACHE   (0x10000000)
+#define SUN3_PAGE_ACCESSED  (0x02000000)
+#define SUN3_PAGE_MODIFIED  (0x01000000)
+
+
+/* Externally used page protection values. */
+#define _PAGE_PRESENT	(SUN3_PAGE_VALID)
+#define _PAGE_ACCESSED	(SUN3_PAGE_ACCESSED)
+
+#define PTE_FILE_MAX_BITS 28
+
+/* Compound page protection values. */
+//todo: work out which ones *should* have SUN3_PAGE_NOCACHE and fix...
+// is it just PAGE_KERNEL and PAGE_SHARED?
+#define PAGE_NONE	__pgprot(SUN3_PAGE_VALID \
+				 | SUN3_PAGE_ACCESSED \
+				 | SUN3_PAGE_NOCACHE)
+#define PAGE_SHARED	__pgprot(SUN3_PAGE_VALID \
+				 | SUN3_PAGE_WRITEABLE \
+				 | SUN3_PAGE_ACCESSED \
+				 | SUN3_PAGE_NOCACHE)
+#define PAGE_COPY	__pgprot(SUN3_PAGE_VALID \
+				 | SUN3_PAGE_ACCESSED \
+				 | SUN3_PAGE_NOCACHE)
+#define PAGE_READONLY	__pgprot(SUN3_PAGE_VALID \
+				 | SUN3_PAGE_ACCESSED \
+				 | SUN3_PAGE_NOCACHE)
+#define PAGE_KERNEL	__pgprot(SUN3_PAGE_VALID \
+				 | SUN3_PAGE_WRITEABLE \
+				 | SUN3_PAGE_SYSTEM \
+				 | SUN3_PAGE_NOCACHE \
+				 | SUN3_PAGE_ACCESSED \
+				 | SUN3_PAGE_MODIFIED)
+#define PAGE_INIT	__pgprot(SUN3_PAGE_VALID \
+				 | SUN3_PAGE_WRITEABLE \
+				 | SUN3_PAGE_SYSTEM \
+				 | SUN3_PAGE_NOCACHE)
+
+/*
+ * Page protections for initialising protection_map. The sun3 has only two
+ * protection settings, valid (implying read and execute) and writeable. These
+ * are as close as we can get...
+ */
+#define __P000	PAGE_NONE
+#define __P001	PAGE_READONLY
+#define __P010	PAGE_COPY
+#define __P011	PAGE_COPY
+#define __P100	PAGE_READONLY
+#define __P101	PAGE_READONLY
+#define __P110	PAGE_COPY
+#define __P111	PAGE_COPY
+
+#define __S000	PAGE_NONE
+#define __S001	PAGE_READONLY
+#define __S010	PAGE_SHARED
+#define __S011	PAGE_SHARED
+#define __S100	PAGE_READONLY
+#define __S101	PAGE_READONLY
+#define __S110	PAGE_SHARED
+#define __S111	PAGE_SHARED
+
+/* Use these fake page-protections on PMDs. */
+#define SUN3_PMD_VALID	(0x00000001)
+#define SUN3_PMD_MASK	(0x0000003F)
+#define SUN3_PMD_MAGIC	(0x0000002B)
+
+#ifndef __ASSEMBLY__
+
+/*
+ * Conversion functions: convert a page and protection to a page entry,
+ * and a page entry and page directory to the page they refer to.
+ */
+#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
+
+static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
+{
+	pte_val(pte) = (pte_val(pte) & SUN3_PAGE_CHG_MASK) | pgprot_val(newprot);
+	return pte;
+}
+
+#define pmd_set(pmdp,ptep) do {} while (0)
+
+static inline void pgd_set(pgd_t *pgdp, pmd_t *pmdp)
+{
+	pgd_val(*pgdp) = virt_to_phys(pmdp);
+}
+
+#define __pte_page(pte) \
+((unsigned long) __va ((pte_val (pte) & SUN3_PAGE_PGNUM_MASK) << PAGE_SHIFT))
+#define __pmd_page(pmd) \
+((unsigned long) __va (pmd_val (pmd) & PAGE_MASK))
+
+static inline int pte_none (pte_t pte) { return !pte_val (pte); }
+static inline int pte_present (pte_t pte) { return pte_val (pte) & SUN3_PAGE_VALID; }
+static inline void pte_clear (struct mm_struct *mm, unsigned long addr, pte_t *ptep)
+{
+	pte_val (*ptep) = 0;
+}
+
+#define pte_pfn(pte)            (pte_val(pte) & SUN3_PAGE_PGNUM_MASK)
+#define pfn_pte(pfn, pgprot) \
+({ pte_t __pte; pte_val(__pte) = pfn | pgprot_val(pgprot); __pte; })
+
+#define pte_page(pte)		virt_to_page(__pte_page(pte))
+#define pmd_page(pmd)		virt_to_page(__pmd_page(pmd))
+
+
+static inline int pmd_none2 (pmd_t *pmd) { return !pmd_val (*pmd); }
+#define pmd_none(pmd) pmd_none2(&(pmd))
+//static inline int pmd_bad (pmd_t pmd) { return (pmd_val (pmd) & SUN3_PMD_MASK) != SUN3_PMD_MAGIC; }
+static inline int pmd_bad2 (pmd_t *pmd) { return 0; }
+#define pmd_bad(pmd) pmd_bad2(&(pmd))
+static inline int pmd_present2 (pmd_t *pmd) { return pmd_val (*pmd) & SUN3_PMD_VALID; }
+/* #define pmd_present(pmd) pmd_present2(&(pmd)) */
+#define pmd_present(pmd) (!pmd_none2(&(pmd)))
+static inline void pmd_clear (pmd_t *pmdp) { pmd_val (*pmdp) = 0; }
+
+static inline int pgd_none (pgd_t pgd) { return 0; }
+static inline int pgd_bad (pgd_t pgd) { return 0; }
+static inline int pgd_present (pgd_t pgd) { return 1; }
+static inline void pgd_clear (pgd_t *pgdp) {}
+
+
+#define pte_ERROR(e) \
+	printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e))
+#define pmd_ERROR(e) \
+	printk("%s:%d: bad pmd %08lx.\n", __FILE__, __LINE__, pmd_val(e))
+#define pgd_ERROR(e) \
+	printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))
+
+
+/*
+ * The following only work if pte_present() is true.
+ * Undefined behaviour if not...
+ * [we have the full set here even if they don't change from m68k]
+ */
+static inline int pte_write(pte_t pte)		{ return pte_val(pte) & SUN3_PAGE_WRITEABLE; }
+static inline int pte_dirty(pte_t pte)		{ return pte_val(pte) & SUN3_PAGE_MODIFIED; }
+static inline int pte_young(pte_t pte)		{ return pte_val(pte) & SUN3_PAGE_ACCESSED; }
+static inline int pte_file(pte_t pte)		{ return pte_val(pte) & SUN3_PAGE_ACCESSED; }
+static inline int pte_special(pte_t pte)	{ return 0; }
+
+static inline pte_t pte_wrprotect(pte_t pte)	{ pte_val(pte) &= ~SUN3_PAGE_WRITEABLE; return pte; }
+static inline pte_t pte_mkclean(pte_t pte)	{ pte_val(pte) &= ~SUN3_PAGE_MODIFIED; return pte; }
+static inline pte_t pte_mkold(pte_t pte)	{ pte_val(pte) &= ~SUN3_PAGE_ACCESSED; return pte; }
+static inline pte_t pte_mkwrite(pte_t pte)	{ pte_val(pte) |= SUN3_PAGE_WRITEABLE; return pte; }
+static inline pte_t pte_mkdirty(pte_t pte)	{ pte_val(pte) |= SUN3_PAGE_MODIFIED; return pte; }
+static inline pte_t pte_mkyoung(pte_t pte)	{ pte_val(pte) |= SUN3_PAGE_ACCESSED; return pte; }
+static inline pte_t pte_mknocache(pte_t pte)	{ pte_val(pte) |= SUN3_PAGE_NOCACHE; return pte; }
+// use this version when caches work...
+//static inline pte_t pte_mkcache(pte_t pte)	{ pte_val(pte) &= SUN3_PAGE_NOCACHE; return pte; }
+// until then, use:
+static inline pte_t pte_mkcache(pte_t pte)	{ return pte; }
+static inline pte_t pte_mkspecial(pte_t pte)	{ return pte; }
+
+extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
+extern pgd_t kernel_pg_dir[PTRS_PER_PGD];
+
+/* Find an entry in a pagetable directory. */
+#define pgd_index(address)     ((address) >> PGDIR_SHIFT)
+
+#define pgd_offset(mm, address) \
+((mm)->pgd + pgd_index(address))
+
+/* Find an entry in a kernel pagetable directory. */
+#define pgd_offset_k(address) pgd_offset(&init_mm, address)
+
+/* Find an entry in the second-level pagetable. */
+static inline pmd_t *pmd_offset (pgd_t *pgd, unsigned long address)
+{
+	return (pmd_t *) pgd;
+}
+
+static inline unsigned long pte_to_pgoff(pte_t pte)
+{
+	return pte.pte & SUN3_PAGE_PGNUM_MASK;
+}
+
+static inline pte_t pgoff_to_pte(unsigned off)
+{
+	pte_t pte = { off + SUN3_PAGE_ACCESSED };
+	return pte;
+}
+
+
+/* Find an entry in the third-level pagetable. */
+#define pte_index(address) ((address >> PAGE_SHIFT) & (PTRS_PER_PTE-1))
+#define pte_offset_kernel(pmd, address) ((pte_t *) __pmd_page(*pmd) + pte_index(address))
+/* FIXME: should we bother with kmap() here? */
+#define pte_offset_map(pmd, address) ((pte_t *)kmap(pmd_page(*pmd)) + pte_index(address))
+#define pte_offset_map_nested(pmd, address) pte_offset_map(pmd, address)
+#define pte_unmap(pte) kunmap(pte)
+#define pte_unmap_nested(pte) kunmap(pte)
+
+/* Macros to (de)construct the fake PTEs representing swap pages. */
+#define __swp_type(x)		((x).val & 0x7F)
+#define __swp_offset(x)		(((x).val) >> 7)
+#define __swp_entry(type,offset) ((swp_entry_t) { ((type) | ((offset) << 7)) })
+#define __pte_to_swp_entry(pte)	((swp_entry_t) { pte_val(pte) })
+#define __swp_entry_to_pte(x)	((pte_t) { (x).val })
+
+#endif	/* !__ASSEMBLY__ */
+#endif	/* !_SUN3_PGTABLE_H */