[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>

diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 600954d..f9ce5d7 100644 (file)
--- 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 c1aa075..34ae114 100644 (file)
--- 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 a13a93d..c681133 100644 (file)
--- 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 0ad101a..b08238f 100644 (file)
--- 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 03cacc2..ace9f4c 100644 (file)
--- 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 c66b477..0d4e203 100644 (file)
--- 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 7750c44..1891dbe 100644 (file)
--- 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 e9b2184..16e4ee1 100644 (file)
--- 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 e6807d6..e1f51d4 100644 (file)
--- 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 2f16d93..0f39bdb 100644 (file)
--- 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 4ec6a5a..d949e9d 100644 (file)
--- 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 66481bb..b886bec 100644 (file)
--- 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 60a8fc4..0f66f0f 100644 (file)
--- 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 5a660f1..03691ab 100644 (file)
--- 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 03e843f..53bff8b 100644 (file)
--- 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 8c1a2df..1b04e57 100644 (file)
--- 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);