[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>

11 files changed, 113 insertions, 66 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;