[POWERPC] Merge 32 and 64 bits asm-powerpc/io.h

powerpc: Merge 32 and 64 bits asm-powerpc/io.h

The rework on io.h done for the new hookable accessors made it easier,
so I just finished the work and merged 32 and 64 bits io.h for arch/powerpc.

arch/ppc still uses the old version in asm-ppc, there is just too much gunk
in there that I really can't be bothered trying to cleanup.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

16 files changed, 367 insertions, 213 deletions

diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 600954df07ae..f9ce5d798de3 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -72,7 +72,7 @@ obj-$(CONFIG_AUDIT)		+= audit.o
 obj64-$(CONFIG_AUDIT)           += compat_audit.o
 
 ifneq ($(CONFIG_PPC_INDIRECT_IO),y)
-pci64-$(CONFIG_PPC64)           += iomap.o
+obj-y                           += iomap.o
 endif
 
 ifeq ($(CONFIG_PPC_ISERIES),y)
diff --git a/arch/powerpc/kernel/io.c b/arch/powerpc/kernel/io.c
index c1aa07524c26..34ae11494ddc 100644
--- a/arch/powerpc/kernel/io.c
+++ b/arch/powerpc/kernel/io.c
@@ -117,3 +117,90 @@ void _outsl_ns(volatile u32 __iomem *port, const void *buf, long count)
         asm volatile("sync");
 }
 EXPORT_SYMBOL(_outsl_ns);
+
+#define IO_CHECK_ALIGN(v,a) ((((unsigned long)(v)) & ((a) - 1)) == 0)
+
+void _memset_io(volatile void __iomem *addr, int c, unsigned long n)
+{
+        void *p = (void __force *)addr;
+        u32 lc = c;
+        lc |= lc << 8;
+        lc |= lc << 16;
+
+        __asm__ __volatile__ ("sync" : : : "memory");
+        while(n && !IO_CHECK_ALIGN(p, 4)) {
+                *((volatile u8 *)p) = c;
+                p++;
+                n--;
+        }
+        while(n >= 4) {
+                *((volatile u32 *)p) = lc;
+                p += 4;
+                n -= 4;
+        }
+        while(n) {
+                *((volatile u8 *)p) = c;
+                p++;
+                n--;
+        }
+        __asm__ __volatile__ ("sync" : : : "memory");
+}
+EXPORT_SYMBOL(_memset_io);
+
+void _memcpy_fromio(void *dest, const volatile void __iomem *src,
+                    unsigned long n)
+{
+        void *vsrc = (void __force *) src;
+
+        __asm__ __volatile__ ("sync" : : : "memory");
+        while(n && (!IO_CHECK_ALIGN(vsrc, 4) || !IO_CHECK_ALIGN(dest, 4))) {
+                *((u8 *)dest) = *((volatile u8 *)vsrc);
+                __asm__ __volatile__ ("eieio" : : : "memory");
+                vsrc++;
+                dest++;
+                n--;
+        }
+        while(n > 4) {
+                *((u32 *)dest) = *((volatile u32 *)vsrc);
+                __asm__ __volatile__ ("eieio" : : : "memory");
+                vsrc += 4;
+                dest += 4;
+                n -= 4;
+        }
+        while(n) {
+                *((u8 *)dest) = *((volatile u8 *)vsrc);
+                __asm__ __volatile__ ("eieio" : : : "memory");
+                vsrc++;
+                dest++;
+                n--;
+        }
+        __asm__ __volatile__ ("sync" : : : "memory");
+}
+EXPORT_SYMBOL(_memcpy_fromio);
+
+void _memcpy_toio(volatile void __iomem *dest, const void *src, unsigned long n)
+{
+        void *vdest = (void __force *) dest;
+
+        __asm__ __volatile__ ("sync" : : : "memory");
+        while(n && (!IO_CHECK_ALIGN(vdest, 4) || !IO_CHECK_ALIGN(src, 4))) {
+                *((volatile u8 *)vdest) = *((u8 *)src);
+                src++;
+                vdest++;
+                n--;
+        }
+        while(n > 4) {
+                *((volatile u32 *)vdest) = *((volatile u32 *)src);
+                src += 4;
+                vdest += 4;
+                n-=4;
+        }
+        while(n) {
+                *((volatile u8 *)vdest) = *((u8 *)src);
+                src++;
+                vdest++;
+                n--;
+        }
+        __asm__ __volatile__ ("sync" : : : "memory");
+}
+EXPORT_SYMBOL(_memcpy_toio);
diff --git a/arch/powerpc/kernel/iomap.c b/arch/powerpc/kernel/iomap.c
index a13a93dfc655..c68113371050 100644
--- a/arch/powerpc/kernel/iomap.c
+++ b/arch/powerpc/kernel/iomap.c
@@ -106,7 +106,7 @@ EXPORT_SYMBOL(iowrite32_rep);
 
 void __iomem *ioport_map(unsigned long port, unsigned int len)
 {
-        return (void __iomem *) (port+pci_io_base);
+        return (void __iomem *) (port + _IO_BASE);
 }
 
 void ioport_unmap(void __iomem *addr)
diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c
index 0ad101a5fc5e..b08238f30502 100644
--- a/arch/powerpc/kernel/pci_32.c
+++ b/arch/powerpc/kernel/pci_32.c
@@ -1561,7 +1561,7 @@ static struct resource *__pci_mmap_make_offset(struct pci_dev *dev,
                 *offset += hose->pci_mem_offset;
                 res_bit = IORESOURCE_MEM;
         } else {
-                io_offset = hose->io_base_virt - ___IO_BASE;
+                io_offset = hose->io_base_virt - (void __iomem *)_IO_BASE;
                 *offset += io_offset;
                 res_bit = IORESOURCE_IO;
         }
@@ -1816,7 +1816,8 @@ void pci_resource_to_user(const struct pci_dev *dev, int bar,
                 return;
 
         if (rsrc->flags & IORESOURCE_IO)
-                offset = ___IO_BASE - hose->io_base_virt + hose->io_base_phys;
+                offset = (void __iomem *)_IO_BASE - hose->io_base_virt
+                        + hose->io_base_phys;
 
         *start = rsrc->start + offset;
         *end = rsrc->end + offset;
@@ -1835,35 +1836,6 @@ pci_init_resource(struct resource *res, unsigned long start, unsigned long end,
         res->child = NULL;
 }
 
-void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
-{
-        unsigned long start = pci_resource_start(dev, bar);
-        unsigned long len = pci_resource_len(dev, bar);
-        unsigned long flags = pci_resource_flags(dev, bar);
-
-        if (!len)
-                return NULL;
-        if (max && len > max)
-                len = max;
-        if (flags & IORESOURCE_IO)
-                return ioport_map(start, len);
-        if (flags & IORESOURCE_MEM)
-                /* Not checking IORESOURCE_CACHEABLE because PPC does
-                 * not currently distinguish between ioremap and
-                 * ioremap_nocache.
-                 */
-                return ioremap(start, len);
-        /* What? */
-        return NULL;
-}
-
-void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
-{
-        /* Nothing to do */
-}
-EXPORT_SYMBOL(pci_iomap);
-EXPORT_SYMBOL(pci_iounmap);
-
 unsigned long pci_address_to_pio(phys_addr_t address)
 {
         struct pci_controller* hose = hose_head;
diff --git a/arch/powerpc/kernel/rtas_pci.c b/arch/powerpc/kernel/rtas_pci.c
index 03cacc25a0ae..ace9f4c86e67 100644
--- a/arch/powerpc/kernel/rtas_pci.c
+++ b/arch/powerpc/kernel/rtas_pci.c
@@ -38,6 +38,7 @@
 #include <asm/rtas.h>
 #include <asm/mpic.h>
 #include <asm/ppc-pci.h>
+#include <asm/eeh.h>
 
 /* RTAS tokens */
 static int read_pci_config;
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index c66b4771ef44..0d4e203fa7a0 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -53,10 +53,6 @@
 #endif
 #include <asm/kexec.h>
 
-#ifdef CONFIG_PPC64     /* XXX */
-#define _IO_BASE        pci_io_base
-#endif
-
 #ifdef CONFIG_DEBUGGER
 int (*__debugger)(struct pt_regs *regs);
 int (*__debugger_ipi)(struct pt_regs *regs);
@@ -241,7 +237,7 @@ void system_reset_exception(struct pt_regs *regs)
  */
 static inline int check_io_access(struct pt_regs *regs)
 {
-#if defined(CONFIG_PPC_PMAC) && defined(CONFIG_PPC32)
+#ifdef CONFIG_PPC32
         unsigned long msr = regs->msr;
         const struct exception_table_entry *entry;
         unsigned int *nip = (unsigned int *)regs->nip;
@@ -274,7 +270,7 @@ static inline int check_io_access(struct pt_regs *regs)
                         return 1;
                 }
         }
-#endif /* CONFIG_PPC_PMAC && CONFIG_PPC32 */
+#endif /* CONFIG_PPC32 */
         return 0;
 }
 
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c
index 7750c4425688..1891dbeeb8e9 100644
--- a/arch/powerpc/mm/pgtable_32.c
+++ b/arch/powerpc/mm/pgtable_32.c
@@ -149,6 +149,13 @@ ioremap(phys_addr_t addr, unsigned long size)
 EXPORT_SYMBOL(ioremap);
 
 void __iomem *
+ioremap_flags(phys_addr_t addr, unsigned long size, unsigned long flags)
+{
+        return __ioremap(addr, size, flags);
+}
+EXPORT_SYMBOL(ioremap_flags);
+
+void __iomem *
 __ioremap(phys_addr_t addr, unsigned long size, unsigned long flags)
 {
         unsigned long v, i;
@@ -247,20 +254,7 @@ void iounmap(volatile void __iomem *addr)
 }
 EXPORT_SYMBOL(iounmap);
 
-void __iomem *ioport_map(unsigned long port, unsigned int len)
-{
-        return (void __iomem *) (port + _IO_BASE);
-}
-
-void ioport_unmap(void __iomem *addr)
-{
-        /* Nothing to do */
-}
-EXPORT_SYMBOL(ioport_map);
-EXPORT_SYMBOL(ioport_unmap);
-
-int
-map_page(unsigned long va, phys_addr_t pa, int flags)
+int map_page(unsigned long va, phys_addr_t pa, int flags)
 {
         pmd_t *pd;
         pte_t *pg;
diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c
index e9b21846ccbd..16e4ee1c2318 100644
--- a/arch/powerpc/mm/pgtable_64.c
+++ b/arch/powerpc/mm/pgtable_64.c
@@ -113,7 +113,7 @@ static int map_io_page(unsigned long ea, unsigned long pa, int flags)
 }
 
 
-static void __iomem * __ioremap_com(unsigned long addr, unsigned long pa,
+static void __iomem * __ioremap_com(phys_addr_t addr, unsigned long pa,
                             unsigned long ea, unsigned long size,
                             unsigned long flags)
 {
@@ -129,7 +129,7 @@ static void __iomem * __ioremap_com(unsigned long addr, unsigned long pa,
         return (void __iomem *) (ea + (addr & ~PAGE_MASK));
 }
 
-void __iomem * __ioremap(unsigned long addr, unsigned long size,
+void __iomem * __ioremap(phys_addr_t addr, unsigned long size,
                          unsigned long flags)
 {
         unsigned long pa, ea;
@@ -169,7 +169,7 @@ void __iomem * __ioremap(unsigned long addr, unsigned long size,
 }
 
 
-void __iomem * ioremap(unsigned long addr, unsigned long size)
+void __iomem * ioremap(phys_addr_t addr, unsigned long size)
 {
         unsigned long flags = _PAGE_NO_CACHE | _PAGE_GUARDED;
 
@@ -178,7 +178,7 @@ void __iomem * ioremap(unsigned long addr, unsigned long size)
         return __ioremap(addr, size, flags);
 }
 
-void __iomem * ioremap_flags(unsigned long addr, unsigned long size,
+void __iomem * ioremap_flags(phys_addr_t addr, unsigned long size,
                              unsigned long flags)
 {
         if (ppc_md.ioremap)
@@ -189,7 +189,7 @@ void __iomem * ioremap_flags(unsigned long addr, unsigned long size,
 
 #define IS_PAGE_ALIGNED(_val) ((_val) == ((_val) & PAGE_MASK))
 
-int __ioremap_explicit(unsigned long pa, unsigned long ea,
+int __ioremap_explicit(phys_addr_t pa, unsigned long ea,
                        unsigned long size, unsigned long flags)
 {
         struct vm_struct *area;
@@ -244,7 +244,7 @@ int __ioremap_explicit(unsigned long pa, unsigned long ea,
  *
  * XXX  what about calls before mem_init_done (ie python_countermeasures())
  */
-void __iounmap(void __iomem *token)
+void __iounmap(volatile void __iomem *token)
 {
         void *addr;
 
@@ -256,7 +256,7 @@ void __iounmap(void __iomem *token)
         im_free(addr);
 }
 
-void iounmap(void __iomem *token)
+void iounmap(volatile void __iomem *token)
 {
         if (ppc_md.iounmap)
                 ppc_md.iounmap(token);
@@ -282,7 +282,7 @@ static int iounmap_subset_regions(unsigned long addr, unsigned long size)
         return 0;
 }
 
-int __iounmap_explicit(void __iomem *start, unsigned long size)
+int __iounmap_explicit(volatile void __iomem *start, unsigned long size)
 {
         struct vm_struct *area;
         unsigned long addr;
diff --git a/arch/powerpc/platforms/chrp/setup.c b/arch/powerpc/platforms/chrp/setup.c
index e6807d6d75bf..e1f51d455984 100644
--- a/arch/powerpc/platforms/chrp/setup.c
+++ b/arch/powerpc/platforms/chrp/setup.c
@@ -588,7 +588,6 @@ static int __init chrp_probe(void)
         ISA_DMA_THRESHOLD = ~0L;
         DMA_MODE_READ = 0x44;
         DMA_MODE_WRITE = 0x48;
-        isa_io_base = CHRP_ISA_IO_BASE;         /* default value */
 
         return 1;
 }
diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c
index 2f16d9330cfe..0f39bdbbf917 100644
--- a/arch/powerpc/platforms/iseries/setup.c
+++ b/arch/powerpc/platforms/iseries/setup.c
@@ -617,13 +617,13 @@ static void iseries_dedicated_idle(void)
 void __init iSeries_init_IRQ(void) { }
 #endif
 
-static void __iomem *iseries_ioremap(unsigned long address, unsigned long size,
+static void __iomem *iseries_ioremap(phys_addr_t address, unsigned long size,
                                      unsigned long flags)
 {
         return (void __iomem *)address;
 }
 
-static void iseries_iounmap(void __iomem *token)
+static void iseries_iounmap(volatile void __iomem *token)
 {
 }
 
diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c
index 4ec6a5a65f30..d949e9df41ef 100644
--- a/arch/powerpc/platforms/powermac/setup.c
+++ b/arch/powerpc/platforms/powermac/setup.c
@@ -677,8 +677,6 @@ static int __init pmac_probe(void)
 
 #ifdef CONFIG_PPC32
         /* isa_io_base gets set in pmac_pci_init */
-        isa_mem_base = PMAC_ISA_MEM_BASE;
-        pci_dram_offset = PMAC_PCI_DRAM_OFFSET;
         ISA_DMA_THRESHOLD = ~0L;
         DMA_MODE_READ = 1;
         DMA_MODE_WRITE = 2;
diff --git a/include/asm-powerpc/eeh.h b/include/asm-powerpc/eeh.h
index 66481bbf270a..b886bec67016 100644
--- a/include/asm-powerpc/eeh.h
+++ b/include/asm-powerpc/eeh.h
@@ -169,104 +169,19 @@ static inline u64 eeh_readq_be(const volatile void __iomem *addr)
         return val;
 }
 
-#define EEH_CHECK_ALIGN(v,a) \
-        ((((unsigned long)(v)) & ((a) - 1)) == 0)
-
-static inline void eeh_memset_io(volatile void __iomem *addr, int c,
-                                 unsigned long n)
-{
-        void *p = (void __force *)addr;
-        u32 lc = c;
-        lc |= lc << 8;
-        lc |= lc << 16;
-
-        __asm__ __volatile__ ("sync" : : : "memory");
-        while(n && !EEH_CHECK_ALIGN(p, 4)) {
-                *((volatile u8 *)p) = c;
-                p++;
-                n--;
-        }
-        while(n >= 4) {
-                *((volatile u32 *)p) = lc;
-                p += 4;
-                n -= 4;
-        }
-        while(n) {
-                *((volatile u8 *)p) = c;
-                p++;
-                n--;
-        }
-        __asm__ __volatile__ ("sync" : : : "memory");
-}
-static inline void eeh_memcpy_fromio(void *dest, const volatile void __iomem *src,
+static inline void eeh_memcpy_fromio(void *dest, const
+                                     volatile void __iomem *src,
                                      unsigned long n)
 {
-        void *vsrc = (void __force *) src;
-        void *destsave = dest;
-        unsigned long nsave = n;
-
-        __asm__ __volatile__ ("sync" : : : "memory");
-        while(n && (!EEH_CHECK_ALIGN(vsrc, 4) || !EEH_CHECK_ALIGN(dest, 4))) {
-                *((u8 *)dest) = *((volatile u8 *)vsrc);
-                __asm__ __volatile__ ("eieio" : : : "memory");
-                vsrc++;
-                dest++;
-                n--;
-        }
-        while(n > 4) {
-                *((u32 *)dest) = *((volatile u32 *)vsrc);
-                __asm__ __volatile__ ("eieio" : : : "memory");
-                vsrc += 4;
-                dest += 4;
-                n -= 4;
-        }
-        while(n) {
-                *((u8 *)dest) = *((volatile u8 *)vsrc);
-                __asm__ __volatile__ ("eieio" : : : "memory");
-                vsrc++;
-                dest++;
-                n--;
-        }
-        __asm__ __volatile__ ("sync" : : : "memory");
+        _memcpy_fromio(dest, src, n);
 
         /* Look for ffff's here at dest[n].  Assume that at least 4 bytes
          * were copied. Check all four bytes.
          */
-        if ((nsave >= 4) &&
-                (EEH_POSSIBLE_ERROR((*((u32 *) destsave+nsave-4)), u32))) {
-                eeh_check_failure(src, (*((u32 *) destsave+nsave-4)));
-        }
+        if (n >= 4 && EEH_POSSIBLE_ERROR(*((u32 *)(dest + n - 4)), u32))
+                eeh_check_failure(src, *((u32 *)(dest + n - 4)));
 }
 
-static inline void eeh_memcpy_toio(volatile void __iomem *dest, const void *src,
-                                   unsigned long n)
-{
-        void *vdest = (void __force *) dest;
-
-        __asm__ __volatile__ ("sync" : : : "memory");
-        while(n && (!EEH_CHECK_ALIGN(vdest, 4) || !EEH_CHECK_ALIGN(src, 4))) {
-                *((volatile u8 *)vdest) = *((u8 *)src);
-                src++;
-                vdest++;
-                n--;
-        }
-        while(n > 4) {
-                *((volatile u32 *)vdest) = *((volatile u32 *)src);
-                src += 4;
-                vdest += 4;
-                n-=4;
-        }
-        while(n) {
-                *((volatile u8 *)vdest) = *((u8 *)src);
-                src++;
-                vdest++;
-                n--;
-        }
-        __asm__ __volatile__ ("sync" : : : "memory");
-}
-
-#undef EEH_CHECK_ALIGN
-
 /* in-string eeh macros */
 static inline void eeh_readsb(const volatile void __iomem *addr, void * buf,
                               int ns)
diff --git a/include/asm-powerpc/ide.h b/include/asm-powerpc/ide.h
index 60a8fc429970..0f66f0f82c32 100644
--- a/include/asm-powerpc/ide.h
+++ b/include/asm-powerpc/ide.h
@@ -22,17 +22,10 @@
 #endif
 #endif
 
-#ifdef __powerpc64__
 #define __ide_mm_insw(p, a, c)  readsw((void __iomem *)(p), (a), (c))
 #define __ide_mm_insl(p, a, c)  readsl((void __iomem *)(p), (a), (c))
 #define __ide_mm_outsw(p, a, c) writesw((void __iomem *)(p), (a), (c))
 #define __ide_mm_outsl(p, a, c) writesl((void __iomem *)(p), (a), (c))
-#else
-#define __ide_mm_insw(p, a, c)  _insw_ns((volatile u16 __iomem *)(p), (a), (c))
-#define __ide_mm_insl(p, a, c)  _insl_ns((volatile u32 __iomem *)(p), (a), (c))
-#define __ide_mm_outsw(p, a, c) _outsw_ns((volatile u16 __iomem *)(p), (a), (c))
-#define __ide_mm_outsl(p, a, c) _outsl_ns((volatile u32 __iomem *)(p), (a), (c))
-#endif
 
 #ifndef  __powerpc64__
 #include <linux/hdreg.h>
diff --git a/include/asm-powerpc/io-defs.h b/include/asm-powerpc/io-defs.h
index 5a660f1130db..03691ab69217 100644
--- a/include/asm-powerpc/io-defs.h
+++ b/include/asm-powerpc/io-defs.h
@@ -3,17 +3,20 @@
 DEF_PCI_AC_RET(readb, u8, (const PCI_IO_ADDR addr), (addr))
 DEF_PCI_AC_RET(readw, u16, (const PCI_IO_ADDR addr), (addr))
 DEF_PCI_AC_RET(readl, u32, (const PCI_IO_ADDR addr), (addr))
-DEF_PCI_AC_RET(readq, u64, (const PCI_IO_ADDR addr), (addr))
 DEF_PCI_AC_RET(readw_be, u16, (const PCI_IO_ADDR addr), (addr))
 DEF_PCI_AC_RET(readl_be, u32, (const PCI_IO_ADDR addr), (addr))
-DEF_PCI_AC_RET(readq_be, u64, (const PCI_IO_ADDR addr), (addr))
 DEF_PCI_AC_NORET(writeb, (u8 val, PCI_IO_ADDR addr), (val, addr))
 DEF_PCI_AC_NORET(writew, (u16 val, PCI_IO_ADDR addr), (val, addr))
 DEF_PCI_AC_NORET(writel, (u32 val, PCI_IO_ADDR addr), (val, addr))
-DEF_PCI_AC_NORET(writeq, (u64 val, PCI_IO_ADDR addr), (val, addr))
 DEF_PCI_AC_NORET(writew_be, (u16 val, PCI_IO_ADDR addr), (val, addr))
 DEF_PCI_AC_NORET(writel_be, (u32 val, PCI_IO_ADDR addr), (val, addr))
+
+#ifdef __powerpc64__
+DEF_PCI_AC_RET(readq, u64, (const PCI_IO_ADDR addr), (addr))
+DEF_PCI_AC_RET(readq_be, u64, (const PCI_IO_ADDR addr), (addr))
+DEF_PCI_AC_NORET(writeq, (u64 val, PCI_IO_ADDR addr), (val, addr))
 DEF_PCI_AC_NORET(writeq_be, (u64 val, PCI_IO_ADDR addr), (val, addr))
+#endif /* __powerpc64__ */
 
 DEF_PCI_AC_RET(inb, u8, (unsigned long port), (port))
 DEF_PCI_AC_RET(inw, u16, (unsigned long port), (port))
diff --git a/include/asm-powerpc/io.h b/include/asm-powerpc/io.h
index 03e843fc1437..53bff8bd39b9 100644
--- a/include/asm-powerpc/io.h
+++ b/include/asm-powerpc/io.h
@@ -13,24 +13,51 @@
 extern int check_legacy_ioport(unsigned long base_port);
 #define PNPBIOS_BASE    0xf000  /* only relevant for PReP */
 
-#ifndef CONFIG_PPC64
-#include <asm-ppc/io.h>
-#else
-
 #include <linux/compiler.h>
 #include <asm/page.h>
 #include <asm/byteorder.h>
-#include <asm/paca.h>
 #include <asm/synch.h>
 #include <asm/delay.h>
+#include <asm/mmu.h>
 
 #include <asm-generic/iomap.h>
 
+#ifdef CONFIG_PPC64
+#include <asm/paca.h>
+#endif
+
 #define SIO_CONFIG_RA   0x398
 #define SIO_CONFIG_RD   0x399
 
 #define SLOW_DOWN_IO
 
+/* 32 bits uses slightly different variables for the various IO
+ * bases. Most of this file only uses _IO_BASE though which we
+ * define properly based on the platform
+ */
+#ifndef CONFIG_PCI
+#define _IO_BASE        0
+#define _ISA_MEM_BASE   0
+#define PCI_DRAM_OFFSET 0
+#elif defined(CONFIG_PPC32)
+#define _IO_BASE        isa_io_base
+#define _ISA_MEM_BASE   isa_mem_base
+#define PCI_DRAM_OFFSET pci_dram_offset
+#else
+#define _IO_BASE        pci_io_base
+#define _ISA_MEM_BASE   0
+#define PCI_DRAM_OFFSET 0
+#endif
+
+extern unsigned long isa_io_base;
+extern unsigned long isa_mem_base;
+extern unsigned long pci_io_base;
+extern unsigned long pci_dram_offset;
+
+#if defined(CONFIG_PPC32) && defined(CONFIG_PPC_INDIRECT_IO)
+#error CONFIG_PPC_INDIRECT_IO is not yet supported on 32 bits
+#endif
+
 /*
  *
  * Low level MMIO accessors
@@ -53,7 +80,11 @@ extern int check_legacy_ioport(unsigned long base_port);
  *
  */
 
+#ifdef CONFIG_PPC64
 #define IO_SET_SYNC_FLAG()      do { get_paca()->io_sync = 1; } while(0)
+#else
+#define IO_SET_SYNC_FLAG()
+#endif
 
 #define DEF_MMIO_IN(name, type, insn)                                   \
 static inline type name(const volatile type __iomem *addr)              \
@@ -86,17 +117,19 @@ static inline void name(volatile type __iomem *addr, type val)		\
 DEF_MMIO_IN_BE(in_8,     8, lbz);
 DEF_MMIO_IN_BE(in_be16, 16, lhz);
 DEF_MMIO_IN_BE(in_be32, 32, lwz);
-DEF_MMIO_IN_BE(in_be64, 64, ld);
 DEF_MMIO_IN_LE(in_le16, 16, lhbrx);
 DEF_MMIO_IN_LE(in_le32, 32, lwbrx);
 
 DEF_MMIO_OUT_BE(out_8,     8, stb);
 DEF_MMIO_OUT_BE(out_be16, 16, sth);
 DEF_MMIO_OUT_BE(out_be32, 32, stw);
-DEF_MMIO_OUT_BE(out_be64, 64, std);
 DEF_MMIO_OUT_LE(out_le16, 16, sthbrx);
 DEF_MMIO_OUT_LE(out_le32, 32, stwbrx);
 
+#ifdef __powerpc64__
+DEF_MMIO_OUT_BE(out_be64, 64, std);
+DEF_MMIO_IN_BE(in_be64, 64, ld);
+
 /* There is no asm instructions for 64 bits reverse loads and stores */
 static inline u64 in_le64(const volatile u64 __iomem *addr)
 {
@@ -107,6 +140,7 @@ static inline void out_le64(volatile u64 __iomem *addr, u64 val)
 {
         out_be64(addr, cpu_to_le64(val));
 }
+#endif /* __powerpc64__ */
 
 /*
  * Low level IO stream instructions are defined out of line for now
@@ -126,6 +160,17 @@ extern void _outsl_ns(volatile u32 __iomem *addr, const void *buf, long count);
 #define _outsw  _outsw_ns
 #define _outsl  _outsl_ns
 
+
+/*
+ * memset_io, memcpy_toio, memcpy_fromio base implementations are out of line
+ */
+
+extern void _memset_io(volatile void __iomem *addr, int c, unsigned long n);
+extern void _memcpy_fromio(void *dest, const volatile void __iomem *src,
+                           unsigned long n);
+extern void _memcpy_toio(volatile void __iomem *dest, const void *src,
+                         unsigned long n);
+
 /*
  *
  * PCI and standard ISA accessors
@@ -140,9 +185,6 @@ extern void _outsl_ns(volatile u32 __iomem *addr, const void *buf, long count);
  * of the accessors.
  */
 
-extern unsigned long isa_io_base;
-extern unsigned long pci_io_base;
-
 
 /*
  * Non ordered and non-swapping "raw" accessors
@@ -160,10 +202,6 @@ static inline unsigned int __raw_readl(const volatile void __iomem *addr)
 {
         return *(volatile unsigned int __force *)addr;
 }
-static inline unsigned long __raw_readq(const volatile void __iomem *addr)
-{
-        return *(volatile unsigned long __force *)addr;
-}
 static inline void __raw_writeb(unsigned char v, volatile void __iomem *addr)
 {
         *(volatile unsigned char __force *)addr = v;
@@ -176,11 +214,17 @@ static inline void __raw_writel(unsigned int v, volatile void __iomem *addr)
 {
         *(volatile unsigned int __force *)addr = v;
 }
+
+#ifdef __powerpc64__
+static inline unsigned long __raw_readq(const volatile void __iomem *addr)
+{
+        return *(volatile unsigned long __force *)addr;
+}
 static inline void __raw_writeq(unsigned long v, volatile void __iomem *addr)
 {
         *(volatile unsigned long __force *)addr = v;
 }
-
+#endif /* __powerpc64__ */
 
 /*
  *
@@ -188,7 +232,13 @@ static inline void __raw_writeq(unsigned long v, volatile void __iomem *addr)
  *
  */
 
+/*
+ * Include the EEH definitions when EEH is enabled only so they don't get
+ * in the way when building for 32 bits
+ */
+#ifdef CONFIG_EEH
 #include <asm/eeh.h>
+#endif
 
 /* Shortcut to the MMIO argument pointer */
 #define PCI_IO_ADDR     volatile void __iomem *
@@ -196,7 +246,7 @@ static inline void __raw_writeq(unsigned long v, volatile void __iomem *addr)
 /* Indirect IO address tokens:
  *
  * When CONFIG_PPC_INDIRECT_IO is set, the platform can provide hooks
- * on all IOs.
+ * on all IOs. (Note that this is all 64 bits only for now)
  *
  * To help platforms who may need to differenciate MMIO addresses in
  * their hooks, a bitfield is reserved for use by the platform near the
@@ -241,6 +291,70 @@ do {									\
 #define PCI_FIX_ADDR(addr) (addr)
 #endif
 
+/*
+ * On 32 bits, PIO operations have a recovery mechanism in case they trigger
+ * machine checks (which they occasionally do when probing non existing
+ * IO ports on some platforms, like PowerMac and 8xx).
+ * I always found it to be of dubious reliability and I am tempted to get
+ * rid of it one of these days. So if you think it's important to keep it,
+ * please voice up asap. We never had it for 64 bits and I do not intend
+ * to port it over
+ */
+
+#ifdef CONFIG_PPC32
+
+#define __do_in_asm(name, op)                           \
+extern __inline__ unsigned int name(unsigned int port)  \
+{                                                       \
+        unsigned int x;                                 \
+        __asm__ __volatile__(                           \
+                "sync\n"                                \
+                "0:"    op "    %0,0,%1\n"              \
+                "1:     twi     0,%0,0\n"               \
+                "2:     isync\n"                        \
+                "3:     nop\n"                          \
+                "4:\n"                                  \
+                ".section .fixup,\"ax\"\n"              \
+                "5:     li      %0,-1\n"                \
+                "       b       4b\n"                   \
+                ".previous\n"                           \
+                ".section __ex_table,\"a\"\n"           \
+                "       .align  2\n"                    \
+                "       .long   0b,5b\n"                \
+                "       .long   1b,5b\n"                \
+                "       .long   2b,5b\n"                \
+                "       .long   3b,5b\n"                \
+                ".previous"                             \
+                : "=&r" (x)                             \
+                : "r" (port + _IO_BASE));               \
+        return x;                                       \
+}
+
+#define __do_out_asm(name, op)                          \
+extern __inline__ void name(unsigned int val, unsigned int port) \
+{                                                       \
+        __asm__ __volatile__(                           \
+                "sync\n"                                \
+                "0:" op " %0,0,%1\n"                    \
+                "1:     sync\n"                         \
+                "2:\n"                                  \
+                ".section __ex_table,\"a\"\n"           \
+                "       .align  2\n"                    \
+                "       .long   0b,2b\n"                \
+                "       .long   1b,2b\n"                \
+                ".previous"                             \
+                : : "r" (val), "r" (port + _IO_BASE));  \
+}
+
+__do_in_asm(_rec_inb, "lbzx")
+__do_in_asm(_rec_inw, "lhbrx")
+__do_in_asm(_rec_inl, "lwbrx")
+__do_out_asm(_rec_outb, "stbx")
+__do_out_asm(_rec_outw, "sthbrx")
+__do_out_asm(_rec_outl, "stwbrx")
+
+#endif /* CONFIG_PPC32 */
+
 /* The "__do_*" operations below provide the actual "base" implementation
  * for each of the defined acccessor. Some of them use the out_* functions
  * directly, some of them still use EEH, though we might change that in the
@@ -263,6 +377,8 @@ do {									\
 #define __do_writew_be(val, addr) out_be16(PCI_FIX_ADDR(addr), val)
 #define __do_writel_be(val, addr) out_be32(PCI_FIX_ADDR(addr), val)
 #define __do_writeq_be(val, addr) out_be64(PCI_FIX_ADDR(addr), val)
+
+#ifdef CONFIG_EEH
 #define __do_readb(addr)        eeh_readb(PCI_FIX_ADDR(addr))
 #define __do_readw(addr)        eeh_readw(PCI_FIX_ADDR(addr))
 #define __do_readl(addr)        eeh_readl(PCI_FIX_ADDR(addr))
@@ -270,33 +386,64 @@ do {									\
 #define __do_readw_be(addr)     eeh_readw_be(PCI_FIX_ADDR(addr))
 #define __do_readl_be(addr)     eeh_readl_be(PCI_FIX_ADDR(addr))
 #define __do_readq_be(addr)     eeh_readq_be(PCI_FIX_ADDR(addr))
-
-#define __do_outb(val, port)    writeb(val,(PCI_IO_ADDR)pci_io_base+port);
-#define __do_outw(val, port)    writew(val,(PCI_IO_ADDR)pci_io_base+port);
-#define __do_outl(val, port)    writel(val,(PCI_IO_ADDR)pci_io_base+port);
-#define __do_inb(port)          readb((PCI_IO_ADDR)pci_io_base + port);
-#define __do_inw(port)          readw((PCI_IO_ADDR)pci_io_base + port);
-#define __do_inl(port)          readl((PCI_IO_ADDR)pci_io_base + port);
-
+#else /* CONFIG_EEH */
+#define __do_readb(addr)        in_8(PCI_FIX_ADDR(addr))
+#define __do_readw(addr)        in_le16(PCI_FIX_ADDR(addr))
+#define __do_readl(addr)        in_le32(PCI_FIX_ADDR(addr))
+#define __do_readq(addr)        in_le64(PCI_FIX_ADDR(addr))
+#define __do_readw_be(addr)     in_be16(PCI_FIX_ADDR(addr))
+#define __do_readl_be(addr)     in_be32(PCI_FIX_ADDR(addr))
+#define __do_readq_be(addr)     in_be64(PCI_FIX_ADDR(addr))
+#endif /* !defined(CONFIG_EEH) */
+
+#ifdef CONFIG_PPC32
+#define __do_outb(val, port)    _rec_outb(val, port)
+#define __do_outw(val, port)    _rec_outw(val, port)
+#define __do_outl(val, port)    _rec_outl(val, port)
+#define __do_inb(port)          _rec_inb(port)
+#define __do_inw(port)          _rec_inw(port)
+#define __do_inl(port)          _rec_inl(port)
+#else /* CONFIG_PPC32 */
+#define __do_outb(val, port)    writeb(val,(PCI_IO_ADDR)_IO_BASE+port);
+#define __do_outw(val, port)    writew(val,(PCI_IO_ADDR)_IO_BASE+port);
+#define __do_outl(val, port)    writel(val,(PCI_IO_ADDR)_IO_BASE+port);
+#define __do_inb(port)          readb((PCI_IO_ADDR)_IO_BASE + port);
+#define __do_inw(port)          readw((PCI_IO_ADDR)_IO_BASE + port);
+#define __do_inl(port)          readl((PCI_IO_ADDR)_IO_BASE + port);
+#endif /* !CONFIG_PPC32 */
+
+#ifdef CONFIG_EEH
 #define __do_readsb(a, b, n)    eeh_readsb(PCI_FIX_ADDR(a), (b), (n))
 #define __do_readsw(a, b, n)    eeh_readsw(PCI_FIX_ADDR(a), (b), (n))
 #define __do_readsl(a, b, n)    eeh_readsl(PCI_FIX_ADDR(a), (b), (n))
+#else /* CONFIG_EEH */
+#define __do_readsb(a, b, n)    _insb(PCI_FIX_ADDR(a), (b), (n))
+#define __do_readsw(a, b, n)    _insw(PCI_FIX_ADDR(a), (b), (n))
+#define __do_readsl(a, b, n)    _insl(PCI_FIX_ADDR(a), (b), (n))
+#endif /* !CONFIG_EEH */
 #define __do_writesb(a, b, n)   _outsb(PCI_FIX_ADDR(a),(b),(n))
 #define __do_writesw(a, b, n)   _outsw(PCI_FIX_ADDR(a),(b),(n))
 #define __do_writesl(a, b, n)   _outsl(PCI_FIX_ADDR(a),(b),(n))
 
-#define __do_insb(p, b, n)      readsb((PCI_IO_ADDR)pci_io_base+(p), (b), (n))
-#define __do_insw(p, b, n)      readsw((PCI_IO_ADDR)pci_io_base+(p), (b), (n))
-#define __do_insl(p, b, n)      readsl((PCI_IO_ADDR)pci_io_base+(p), (b), (n))
-#define __do_outsb(p, b, n)     writesb((PCI_IO_ADDR)pci_io_base+(p),(b),(n))
-#define __do_outsw(p, b, n)     writesw((PCI_IO_ADDR)pci_io_base+(p),(b),(n))
-#define __do_outsl(p, b, n)     writesl((PCI_IO_ADDR)pci_io_base+(p),(b),(n))
-
-#define __do_memset_io(addr, c, n)      eeh_memset_io(PCI_FIX_ADDR(addr), c, n)
-#define __do_memcpy_fromio(dst, src, n) eeh_memcpy_fromio(dst, \
-                                                PCI_FIX_ADDR(src), n)
-#define __do_memcpy_toio(dst, src, n)   eeh_memcpy_toio(PCI_FIX_ADDR(dst), \
-                                                src, n)
+#define __do_insb(p, b, n)      readsb((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
+#define __do_insw(p, b, n)      readsw((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
+#define __do_insl(p, b, n)      readsl((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
+#define __do_outsb(p, b, n)     writesb((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
+#define __do_outsw(p, b, n)     writesw((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
+#define __do_outsl(p, b, n)     writesl((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
+
+#define __do_memset_io(addr, c, n)      \
+                                _memset_io(PCI_FIX_ADDR(addr), c, n)
+#define __do_memcpy_toio(dst, src, n)   \
+                                _memcpy_toio(PCI_FIX_ADDR(dst), src, n)
+
+#ifdef CONFIG_EEH
+#define __do_memcpy_fromio(dst, src, n) \
+                                eeh_memcpy_fromio(dst, PCI_FIX_ADDR(src), n)
+#else /* CONFIG_EEH */
+#define __do_memcpy_fromio(dst, src, n) \
+                                _memcpy_fromio(dst,PCI_FIX_ADDR(src),n)
+#endif /* !CONFIG_EEH */
 
 #ifdef CONFIG_PPC_INDIRECT_IO
 #define DEF_PCI_HOOK(x)         x
@@ -343,15 +490,27 @@ static inline void name at					\
 /* Some drivers check for the presence of readq & writeq with
  * a #ifdef, so we make them happy here.
  */
+#ifdef __powerpc64__
 #define readq   readq
 #define writeq  writeq
+#endif
+
+#ifdef CONFIG_NOT_COHERENT_CACHE
 
-/* Nothing to do for cache stuff x*/
+#define dma_cache_inv(_start,_size) \
+        invalidate_dcache_range(_start, (_start + _size))
+#define dma_cache_wback(_start,_size) \
+        clean_dcache_range(_start, (_start + _size))
+#define dma_cache_wback_inv(_start,_size) \
+        flush_dcache_range(_start, (_start + _size))
+
+#else /* CONFIG_NOT_COHERENT_CACHE */
 
 #define dma_cache_inv(_start,_size)             do { } while (0)
 #define dma_cache_wback(_start,_size)           do { } while (0)
 #define dma_cache_wback_inv(_start,_size)       do { } while (0)
 
+#endif /* !CONFIG_NOT_COHERENT_CACHE */
 
 /*
  * Convert a physical pointer to a virtual kernel pointer for /dev/mem
@@ -372,6 +531,9 @@ static inline void name at					\
 #define readl_relaxed(addr) readl(addr)
 #define readq_relaxed(addr) readq(addr)
 
+#ifdef CONFIG_PPC32
+#define mmiowb()
+#else
 /*
  * Enforce synchronisation of stores vs. spin_unlock
  * (this does it explicitely, though our implementation of spin_unlock
@@ -385,6 +547,7 @@ static inline void mmiowb(void)
         : "=&r" (tmp) : "i" (offsetof(struct paca_struct, io_sync))
         : "memory");
 }
+#endif /* !CONFIG_PPC32 */
 
 static inline void iosync(void)
 {
@@ -453,22 +616,29 @@ static inline void iosync(void)
  *   be hooked (but can be used by a hook on iounmap)
  *
  */
-extern void __iomem *ioremap(unsigned long address, unsigned long size);
-extern void __iomem *ioremap_flags(unsigned long address, unsigned long size,
+extern void __iomem *ioremap(phys_addr_t address, unsigned long size);
+extern void __iomem *ioremap_flags(phys_addr_t address, unsigned long size,
                                    unsigned long flags);
 #define ioremap_nocache(addr, size)     ioremap((addr), (size))
-extern void iounmap(void __iomem *addr);
+extern void iounmap(volatile void __iomem *addr);
 
-extern void __iomem *__ioremap(unsigned long address, unsigned long size,
+extern void __iomem *__ioremap(phys_addr_t, unsigned long size,
                                unsigned long flags);
-extern void __iounmap(void __iomem *addr);
+extern void __iounmap(volatile void __iomem *addr);
 
-extern int __ioremap_explicit(unsigned long p_addr, unsigned long v_addr,
+extern int __ioremap_explicit(phys_addr_t p_addr, unsigned long v_addr,
                               unsigned long size, unsigned long flags);
-extern int __iounmap_explicit(void __iomem *start, unsigned long size);
+extern int __iounmap_explicit(volatile void __iomem *start,
+                              unsigned long size);
 
 extern void __iomem * reserve_phb_iospace(unsigned long size);
 
+/* Those are more 32 bits only functions */
+extern unsigned long iopa(unsigned long addr);
+extern unsigned long mm_ptov(unsigned long addr) __attribute_const__;
+extern void io_block_mapping(unsigned long virt, phys_addr_t phys,
+                             unsigned int size, int flags);
+
 
 /*
  * When CONFIG_PPC_INDIRECT_IO is set, we use the generic iomap implementation
@@ -538,7 +708,33 @@ static inline void * phys_to_virt(unsigned long address)
  */
 #define BIO_VMERGE_BOUNDARY     0
 
+/*
+ * 32 bits still uses virt_to_bus() for it's implementation of DMA
+ * mappings se we have to keep it defined here. We also have some old
+ * drivers (shame shame shame) that use bus_to_virt() and haven't been
+ * fixed yet so I need to define it here.
+ */
+#ifdef CONFIG_PPC32
+
+static inline unsigned long virt_to_bus(volatile void * address)
+{
+        if (address == NULL)
+                return 0;
+        return __pa(address) + PCI_DRAM_OFFSET;
+}
+
+static inline void * bus_to_virt(unsigned long address)
+{
+        if (address == 0)
+                return NULL;
+        return __va(address - PCI_DRAM_OFFSET);
+}
+
+#define page_to_bus(page)       (page_to_phys(page) + PCI_DRAM_OFFSET)
+
+#endif /* CONFIG_PPC32 */
+
+
 #endif /* __KERNEL__ */
 
-#endif /* CONFIG_PPC64 */
 #endif /* _ASM_POWERPC_IO_H */
diff --git a/include/asm-powerpc/machdep.h b/include/asm-powerpc/machdep.h
index 8c1a2dfe5cc7..1b04e5723548 100644
--- a/include/asm-powerpc/machdep.h
+++ b/include/asm-powerpc/machdep.h
@@ -88,9 +88,9 @@ struct machdep_calls {
         void            (*pci_dma_dev_setup)(struct pci_dev *dev);
         void            (*pci_dma_bus_setup)(struct pci_bus *bus);
 
-        void __iomem *  (*ioremap)(unsigned long addr, unsigned long size,
+        void __iomem *  (*ioremap)(phys_addr_t addr, unsigned long size,
                                    unsigned long flags);
-        void            (*iounmap)(void __iomem *token);
+        void            (*iounmap)(volatile void __iomem *token);
 #endif /* CONFIG_PPC64 */
 
         int             (*probe)(void);