Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

lib: use generic pci_iomap on all architectures

Many architectures don't want to pull in iomap.c,
so they ended up duplicating pci_iomap from that file.
That function isn't trivial, and we are going to modify it
https://lkml.org/lkml/2011/11/14/183
so the duplication hurts.

This reduces the scope of the problem significantly,
by moving pci_iomap to a separate file and
referencing that from all architectures.

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  alpha: drop pci_iomap/pci_iounmap from pci-noop.c
  mn10300: switch to GENERIC_PCI_IOMAP
  mn10300: add missing __iomap markers
  frv: switch to GENERIC_PCI_IOMAP
  tile: switch to GENERIC_PCI_IOMAP
  tile: don't panic on iomap
  sparc: switch to GENERIC_PCI_IOMAP
  sh: switch to GENERIC_PCI_IOMAP
  powerpc: switch to GENERIC_PCI_IOMAP
  parisc: switch to GENERIC_PCI_IOMAP
  mips: switch to GENERIC_PCI_IOMAP
  microblaze: switch to GENERIC_PCI_IOMAP
  arm: switch to GENERIC_PCI_IOMAP
  alpha: switch to GENERIC_PCI_IOMAP
  lib: add GENERIC_PCI_IOMAP
  lib: move GENERIC_IOMAP to lib/Kconfig

Fix up trivial conflicts due to changes nearby in arch/{m68k,score}/Kconfig

diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 3d74801a40157b09e76263ea5af4546e67fedd30..56a4df952fb0f2e68889229133e38b2b34de4716 100644 (file)
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -70,10 +70,6 @@ config GENERIC_ISA_DMA
        bool
        default y
 
-config GENERIC_IOMAP
-       bool
-       default n
-
 source "init/Kconfig"
 source "kernel/Kconfig.freezer"
 
@@ -319,6 +315,7 @@ config ISA_DMA_API
 config PCI
        bool
        depends on !ALPHA_JENSEN
+       select GENERIC_PCI_IOMAP
        default y
        help
          Find out whether you have a PCI motherboard. PCI is the name of a

diff --git a/arch/alpha/kernel/pci-noop.c b/arch/alpha/kernel/pci-noop.c
index 246100ef07c2474fa5213163b0e1b899d10198a6..04eea4894ef33bc84c60335fc1e79e31553bd328 100644 (file)
--- a/arch/alpha/kernel/pci-noop.c
+++ b/arch/alpha/kernel/pci-noop.c
@@ -185,15 +185,3 @@ struct dma_map_ops alpha_noop_ops = {
 
 struct dma_map_ops *dma_ops = &alpha_noop_ops;
 EXPORT_SYMBOL(dma_ops);
-
-void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
-{
-       return NULL;
-}
-
-void pci_iounmap(struct pci_dev *dev, void __iomem * addr)
-{
-}
-
-EXPORT_SYMBOL(pci_iomap);
-EXPORT_SYMBOL(pci_iounmap);

diff --git a/arch/alpha/kernel/pci.c b/arch/alpha/kernel/pci.c
index c9ab94ee1ca814090249356df8f90b992c59c5c1..f3cae275d3f5e875142c67f89691c891227e2d19 100644 (file)
--- a/arch/alpha/kernel/pci.c
+++ b/arch/alpha/kernel/pci.c
@@ -508,30 +508,7 @@ sys_pciconfig_iobase(long which, unsigned long bus, unsigned long dfn)
        return -EOPNOTSUPP;
 }
 
-/* Create an __iomem token from a PCI BAR.  Copied from lib/iomap.c with
-   no changes, since we don't want the other things in that object file.  */
-
-void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
-{
-       resource_size_t start = pci_resource_start(dev, bar);
-       resource_size_t len = pci_resource_len(dev, bar);
-       unsigned long flags = pci_resource_flags(dev, bar);
-
-       if (!len || !start)
-               return NULL;
-       if (maxlen && len > maxlen)
-               len = maxlen;
-       if (flags & IORESOURCE_IO)
-               return ioport_map(start, len);
-       if (flags & IORESOURCE_MEM) {
-               /* Not checking IORESOURCE_CACHEABLE because alpha does
-                  not distinguish between ioremap and ioremap_nocache.  */
-               return ioremap(start, len);
-       }
-       return NULL;
-}
-
-/* Destroy that token.  Not copied from lib/iomap.c.  */
+/* Destroy an __iomem token.  Not copied from lib/iomap.c.  */
 
 void pci_iounmap(struct pci_dev *dev, void __iomem * addr)
 {
@@ -539,7 +516,6 @@ void pci_iounmap(struct pci_dev *dev, void __iomem * addr)
                iounmap(addr);
 }
 
-EXPORT_SYMBOL(pci_iomap);
 EXPORT_SYMBOL(pci_iounmap);
 
 /* FIXME: Some boxes have multiple ISA bridges! */

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 98a6459cd398141e1453681b6ea01758ca69336c..24626b0419ee97e963e68329a8eb6769360b46ea 100644 (file)
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -31,6 +31,7 @@ config ARM
        select HAVE_SPARSE_IRQ
        select GENERIC_IRQ_SHOW
        select CPU_PM if (SUSPEND || CPU_IDLE)
+       select GENERIC_PCI_IOMAP
        help
          The ARM series is a line of low-power-consumption RISC chip designs
          licensed by ARM Ltd and targeted at embedded applications and

diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h
index 065d100fa63e7d608f49d3ef7f3a629d86cfe057..9275828feb3df24f481934a080572f8d53be3136 100644 (file)
--- a/arch/arm/include/asm/io.h
+++ b/arch/arm/include/asm/io.h
@@ -27,6 +27,7 @@
 #include <asm/byteorder.h>
 #include <asm/memory.h>
 #include <asm/system.h>
+#include <asm-generic/pci_iomap.h>
 
 /*
  * ISA I/O bus memory addresses are 1:1 with the physical address.
@@ -306,7 +307,6 @@ extern void ioport_unmap(void __iomem *addr);
 
 struct pci_dev;
 
-extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen);
 extern void pci_iounmap(struct pci_dev *dev, void __iomem *addr);
 
 /*

diff --git a/arch/arm/mm/iomap.c b/arch/arm/mm/iomap.c
index 430df1a5978d04d198a88f2448c8a2de67c7e963..e62956e1203094bc6daa022486b93bd490c70057 100644 (file)
--- a/arch/arm/mm/iomap.c
+++ b/arch/arm/mm/iomap.c
@@ -35,27 +35,6 @@ EXPORT_SYMBOL(pcibios_min_mem);
 unsigned int pci_flags = PCI_REASSIGN_ALL_RSRC;
 EXPORT_SYMBOL(pci_flags);
 
-void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
-{
-       resource_size_t start = pci_resource_start(dev, bar);
-       resource_size_t len   = pci_resource_len(dev, bar);
-       unsigned long flags = pci_resource_flags(dev, bar);
-
-       if (!len || !start)
-               return NULL;
-       if (maxlen && len > maxlen)
-               len = maxlen;
-       if (flags & IORESOURCE_IO)
-               return ioport_map(start, len);
-       if (flags & IORESOURCE_MEM) {
-               if (flags & IORESOURCE_CACHEABLE)
-                       return ioremap(start, len);
-               return ioremap_nocache(start, len);
-       }
-       return NULL;
-}
-EXPORT_SYMBOL(pci_iomap);
-
 void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
 {
        if ((unsigned long)addr >= VMALLOC_START &&

diff --git a/arch/cris/Kconfig b/arch/cris/Kconfig
index 408b055c585f489e9f3a76c66f32da6680be8d91..b3abfb08aa5c3d32face736f2403fc753a0596c1 100644 (file)
--- a/arch/cris/Kconfig
+++ b/arch/cris/Kconfig
@@ -19,10 +19,6 @@ config GENERIC_CMOS_UPDATE
 config ARCH_USES_GETTIMEOFFSET
        def_bool n
 
-config GENERIC_IOMAP
-       bool
-       default y
-
 config ARCH_HAS_ILOG2_U32
        bool
        default n
@@ -52,6 +48,7 @@ config CRIS
        select HAVE_IDE
        select HAVE_GENERIC_HARDIRQS
        select GENERIC_IRQ_SHOW
+       select GENERIC_IOMAP
 
 config HZ
        int

diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig
index c5e69abb4889f8956f1e4cd13466f3aaf34e94b4..bbbf7927f238005afee51476a6b9156f6c53f954 100644 (file)
--- a/arch/frv/Kconfig
+++ b/arch/frv/Kconfig
@@ -317,6 +317,7 @@ config PCI
        bool "Use PCI"
        depends on MB93090_MB00
        default y
+       select GENERIC_PCI_IOMAP
        help
          Some FR-V systems (such as the MB93090-MB00 VDK) have PCI
          onboard. If you have one of these boards and you wish to use the PCI

diff --git a/arch/frv/include/asm/io.h b/arch/frv/include/asm/io.h
index ca7475e73b5ee7f2673334011f86e5cb77ac62b1..8cb50a2fbcb2d9b34b6bad36323cb49513f64ceb 100644 (file)
--- a/arch/frv/include/asm/io.h
+++ b/arch/frv/include/asm/io.h
@@ -21,6 +21,7 @@
 #include <asm/virtconvert.h>
 #include <asm/string.h>
 #include <asm/mb-regs.h>
+#include <asm-generic/pci_iomap.h>
 #include <linux/delay.h>
 
 /*
@@ -370,7 +371,6 @@ static inline void iowrite32_rep(void __iomem *p, const void *src, unsigned long
 
 /* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
 struct pci_dev;
-extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
 static inline void pci_iounmap(struct pci_dev *dev, void __iomem *p)
 {
 }

diff --git a/arch/frv/mb93090-mb00/Makefile b/arch/frv/mb93090-mb00/Makefile
index b73b542f8f48c32d9a771c5aa0be92a78d4cea00..21f1df1b378af0647664113f18734dd45ebb24c5 100644 (file)
--- a/arch/frv/mb93090-mb00/Makefile
+++ b/arch/frv/mb93090-mb00/Makefile
@@ -3,7 +3,7 @@
 #
 
 ifeq "$(CONFIG_PCI)" "y"
-obj-y := pci-frv.o pci-irq.o pci-vdk.o pci-iomap.o
+obj-y := pci-frv.o pci-irq.o pci-vdk.o
 
 ifeq "$(CONFIG_MMU)" "y"
 obj-y += pci-dma.o

diff --git a/arch/frv/mb93090-mb00/pci-iomap.c b/arch/frv/mb93090-mb00/pci-iomap.c
deleted file mode 100644 (file)
index 35f6df2..0000000
--- a/arch/frv/mb93090-mb00/pci-iomap.c
+++ /dev/null
@@ -1,29 +0,0 @@
-/* pci-iomap.c: description
- *
- * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#include <linux/pci.h>
-#include <linux/module.h>
-
-void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
-{
-       resource_size_t start = pci_resource_start(dev, bar);
-       resource_size_t len = pci_resource_len(dev, bar);
-       unsigned long flags = pci_resource_flags(dev, bar);
-
-       if (!len || !start)
-               return NULL;
-
-       if ((flags & IORESOURCE_IO) || (flags & IORESOURCE_MEM))
-               return (void __iomem *) start;
-
-       return NULL;
-}
-
-EXPORT_SYMBOL(pci_iomap);

diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig
index 02513c2dd5ec99a9e6d0b4c0e4613465c8110a32..9059e3905887196a48750cf3e531abf0aa6d96df 100644 (file)
--- a/arch/hexagon/Kconfig
+++ b/arch/hexagon/Kconfig
@@ -26,6 +26,7 @@ config HEXAGON
        select HAVE_ARCH_KGDB
        select HAVE_ARCH_TRACEHOOK
        select NO_IOPORT
+       select GENERIC_IOMAP
        # mostly generic routines, with some accelerated ones
        ---help---
          Qualcomm Hexagon is a processor architecture designed for high
@@ -73,9 +74,6 @@ config GENERIC_CSUM
 config GENERIC_IRQ_PROBE
        def_bool y
 
-config GENERIC_IOMAP
-       def_bool y
-
 #config ZONE_DMA
 #      bool
 #      default y

diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 3b7a7c483785929f0f126953756aa5f40c694dd0..bd7266903bf8f497b4ddfd416df6091335d17039 100644 (file)
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -32,6 +32,7 @@ config IA64
        select GENERIC_IRQ_SHOW
        select ARCH_WANT_OPTIONAL_GPIOLIB
        select ARCH_HAVE_NMI_SAFE_CMPXCHG
+       select GENERIC_IOMAP
        default y
        help
          The Itanium Processor Family is Intel's 64-bit successor to
@@ -105,10 +106,6 @@ config EFI
        bool
        default y
 
-config GENERIC_IOMAP
-       bool
-       default y
-
 config ARCH_CLOCKSOURCE_DATA
        def_bool y
 

diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index 81fdaa72c540e4315c2d9872d75ff0f4e17afba5..99c363617f270fe3c0b6eb9f64c43a3c0d6bf0a0 100644 (file)
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -37,9 +37,6 @@ config GENERIC_CALIBRATE_DELAY
        bool
        default y
 
-config GENERIC_IOMAP
-       def_bool MMU
-
 config GENERIC_CSUM
        bool
 
@@ -81,6 +78,7 @@ source "kernel/Kconfig.freezer"
 config MMU
        bool "MMU-based Paged Memory Management Support"
        default y
+       select GENERIC_IOMAP
        help
          Select if you want MMU-based virtualised addressing space
          support by paged memory management. If unsure, say 'Y'.

diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index e446bab2427bc7c69982190f3e89c0f442752780..f0eead74fff67d1c4eb0af6eae23d1fcb26720b0 100644 (file)
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -17,6 +17,7 @@ config MICROBLAZE
        select HAVE_GENERIC_HARDIRQS
        select GENERIC_IRQ_PROBE
        select GENERIC_IRQ_SHOW
+       select GENERIC_PCI_IOMAP
 
 config SWAP
        def_bool n

diff --git a/arch/microblaze/pci/iomap.c b/arch/microblaze/pci/iomap.c
index 57acda852f5a4723c7a294520b8fb6d51494cb54..b07abbac03197963c43011ceea69d2ec4c834b1f 100644 (file)
--- a/arch/microblaze/pci/iomap.c
+++ b/arch/microblaze/pci/iomap.c
@@ -10,25 +10,6 @@
 #include <asm/io.h>
 #include <asm/pci-bridge.h>
 
-void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
-{
-       resource_size_t start = pci_resource_start(dev, bar);
-       resource_size_t 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)
-               return ioremap(start, len);
-       /* What? */
-       return NULL;
-}
-EXPORT_SYMBOL(pci_iomap);
-
 void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
 {
        if (isa_vaddr_is_ioport(addr))

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index c529cfe52c53364ea6f7dafb72daee31e3fd1b3a..29d92187ff3019914c5fea55f317108dc5745958 100644 (file)
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -2317,6 +2317,7 @@ config PCI
        bool "Support for PCI controller"
        depends on HW_HAS_PCI
        select PCI_DOMAINS
+       select GENERIC_PCI_IOMAP
        help
          Find out whether you have a PCI motherboard. PCI is the name of a
          bus system, i.e. the way the CPU talks to the other stuff inside

diff --git a/arch/mips/lib/iomap-pci.c b/arch/mips/lib/iomap-pci.c
index 2ab899c4b4ce1ac38a7b235f5c340af49dcc923c..2635b1a9633385568677b9a121f50adb6f96d8b7 100644 (file)
--- a/arch/mips/lib/iomap-pci.c
+++ b/arch/mips/lib/iomap-pci.c
@@ -40,32 +40,6 @@ static void __iomem *ioport_map_pci(struct pci_dev *dev,
        return (void __iomem *) (ctrl->io_map_base + port);
 }
 
-/*
- * Create a virtual mapping cookie for a PCI BAR (memory or IO)
- */
-void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
-{
-       resource_size_t start = pci_resource_start(dev, bar);
-       resource_size_t len = pci_resource_len(dev, bar);
-       unsigned long flags = pci_resource_flags(dev, bar);
-
-       if (!len || !start)
-               return NULL;
-       if (maxlen && len > maxlen)
-               len = maxlen;
-       if (flags & IORESOURCE_IO)
-               return ioport_map_pci(dev, start, len);
-       if (flags & IORESOURCE_MEM) {
-               if (flags & IORESOURCE_CACHEABLE)
-                       return ioremap(start, len);
-               return ioremap_nocache(start, len);
-       }
-       /* What? */
-       return NULL;
-}
-
-EXPORT_SYMBOL(pci_iomap);
-
 void pci_iounmap(struct pci_dev *dev, void __iomem * addr)
 {
        iounmap(addr);

diff --git a/arch/mn10300/Kconfig b/arch/mn10300/Kconfig
index 438db84a1f7c71bee4bcd1ec17ecbfbaa295b637..8f1c40d5817ebb80e9bc818deed5c0b0d80f3ac7 100644 (file)
--- a/arch/mn10300/Kconfig
+++ b/arch/mn10300/Kconfig
@@ -252,6 +252,7 @@ config PCI
        bool "Use PCI"
        depends on MN10300_UNIT_ASB2305
        default y
+       select GENERIC_PCI_IOMAP
        help
          Some systems (such as the ASB2305) have PCI onboard. If you have one
          of these boards and you wish to use the PCI facilities, say Y here.

diff --git a/arch/mn10300/include/asm/io.h b/arch/mn10300/include/asm/io.h
index 787255da744e2647a592b1aea12e20f3e76f83f9..139df8c53de83374a86189a8278d91a184d3e26c 100644 (file)
--- a/arch/mn10300/include/asm/io.h
+++ b/arch/mn10300/include/asm/io.h
@@ -229,7 +229,6 @@ static inline void outsl(unsigned long addr, const void *buffer, int count)
 
 /* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
 struct pci_dev;
-extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
 static inline void pci_iounmap(struct pci_dev *dev, void __iomem *p)
 {
 }
@@ -251,15 +250,15 @@ static inline void *phys_to_virt(unsigned long address)
 /*
  * Change "struct page" to physical address.
  */
-static inline void *__ioremap(unsigned long offset, unsigned long size,
-                             unsigned long flags)
+static inline void __iomem *__ioremap(unsigned long offset, unsigned long size,
+                                     unsigned long flags)
 {
-       return (void *) offset;
+       return (void __iomem *) offset;
 }
 
-static inline void *ioremap(unsigned long offset, unsigned long size)
+static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
 {
-       return (void *) offset;
+       return (void __iomem *) offset;
 }
 
 /*
@@ -267,14 +266,14 @@ static inline void *ioremap(unsigned long offset, unsigned long size)
  * area.  it's useful if some control registers are in such an area and write
  * combining or read caching is not desirable:
  */
-static inline void *ioremap_nocache(unsigned long offset, unsigned long size)
+static inline void __iomem *ioremap_nocache(unsigned long offset, unsigned long size)
 {
-       return (void *) (offset | 0x20000000);
+       return (void __iomem *) (offset | 0x20000000);
 }
 
 #define ioremap_wc ioremap_nocache
 
-static inline void iounmap(void *addr)
+static inline void iounmap(void __iomem *addr)
 {
 }
 

diff --git a/arch/mn10300/unit-asb2305/Makefile b/arch/mn10300/unit-asb2305/Makefile
index 0551022225b39905a7b5055541ec2afe8c7b0f91..cbc5abaa939a0f2e711c178cfede5d68cd9a312c 100644 (file)
--- a/arch/mn10300/unit-asb2305/Makefile
+++ b/arch/mn10300/unit-asb2305/Makefile
@@ -5,4 +5,4 @@
 ###############################################################################
 obj-y   := unit-init.o leds.o
 
-obj-$(CONFIG_PCI) += pci.o pci-asb2305.o pci-irq.o pci-iomap.o
+obj-$(CONFIG_PCI) += pci.o pci-asb2305.o pci-irq.o

diff --git a/arch/mn10300/unit-asb2305/pci-iomap.c b/arch/mn10300/unit-asb2305/pci-iomap.c
deleted file mode 100644 (file)
index c1a8d8f..0000000
--- a/arch/mn10300/unit-asb2305/pci-iomap.c
+++ /dev/null
@@ -1,31 +0,0 @@
-/* ASB2305 PCI I/O mapping handler
- *
- * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
- */
-#include <linux/pci.h>
-#include <linux/module.h>
-
-/*
- * Create a virtual mapping cookie for a PCI BAR (memory or IO)
- */
-void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
-{
-       resource_size_t start = pci_resource_start(dev, bar);
-       resource_size_t len = pci_resource_len(dev, bar);
-       unsigned long flags = pci_resource_flags(dev, bar);
-
-       if (!len || !start)
-               return NULL;
-
-       if ((flags & IORESOURCE_IO) || (flags & IORESOURCE_MEM))
-               return (void __iomem *) start;
-
-       return NULL;
-}
-EXPORT_SYMBOL(pci_iomap);

diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig
index e518a5a4cf4c19abf6f3fa537c478957602a86ad..081a54f1a93d23443f46c576f1031780f090a589 100644 (file)
--- a/arch/openrisc/Kconfig
+++ b/arch/openrisc/Kconfig
@@ -38,9 +38,6 @@ config RWSEM_XCHGADD_ALGORITHM
 config GENERIC_HWEIGHT
        def_bool y
 
-config GENERIC_IOMAP
-       def_bool y
-
 config NO_IOPORT
        def_bool y
 

diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index fdfd8be29e951021140390d1ba37f1006d8f353d..242a1b7ac759448ba6ab06be9f28d4c9e9bfb69a 100644 (file)
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -14,6 +14,7 @@ config PARISC
        select GENERIC_ATOMIC64 if !64BIT
        select HAVE_GENERIC_HARDIRQS
        select GENERIC_IRQ_PROBE
+       select GENERIC_PCI_IOMAP
        select IRQ_PER_CPU
        select ARCH_HAVE_NMI_SAFE_CMPXCHG
 

diff --git a/arch/parisc/lib/iomap.c b/arch/parisc/lib/iomap.c
index 8f470c93b16d10a94706f3f5375f2152db22e582..fb8e10a4fb39d5184b127a934308df1a7aac7900 100644 (file)
--- a/arch/parisc/lib/iomap.c
+++ b/arch/parisc/lib/iomap.c
@@ -436,28 +436,6 @@ void ioport_unmap(void __iomem *addr)
        }
 }
 
-/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
-void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
-{
-       resource_size_t start = pci_resource_start(dev, bar);
-       resource_size_t len = pci_resource_len(dev, bar);
-       unsigned long flags = pci_resource_flags(dev, bar);
-
-       if (!len || !start)
-               return NULL;
-       if (maxlen && len > maxlen)
-               len = maxlen;
-       if (flags & IORESOURCE_IO)
-               return ioport_map(start, len);
-       if (flags & IORESOURCE_MEM) {
-               if (flags & IORESOURCE_CACHEABLE)
-                       return ioremap(start, len);
-               return ioremap_nocache(start, len);
-       }
-       /* What? */
-       return NULL;
-}
-
 void pci_iounmap(struct pci_dev *dev, void __iomem * addr)
 {
        if (!INDIRECT_ADDR(addr)) {
@@ -483,5 +461,4 @@ EXPORT_SYMBOL(iowrite16_rep);
 EXPORT_SYMBOL(iowrite32_rep);
 EXPORT_SYMBOL(ioport_map);
 EXPORT_SYMBOL(ioport_unmap);
-EXPORT_SYMBOL(pci_iomap);
 EXPORT_SYMBOL(pci_iounmap);

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 692ac7588e20d45afa608a7ae6d5f3a7638a315e..1919634a9b32c261c6f989f7c87b7403a5c6c57e 100644 (file)
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -718,6 +718,7 @@ config PCI
        default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
        default PCI_QSPAN if !4xx && !CPM2 && 8xx
        select ARCH_SUPPORTS_MSI
+       select GENERIC_PCI_IOMAP
        help
          Find out whether your system includes a PCI bus. PCI is the name of
          a bus system, i.e. the way the CPU talks to the other stuff inside

diff --git a/arch/powerpc/kernel/iomap.c b/arch/powerpc/kernel/iomap.c
index 262791807397375612e29860ae64e5d86ee6cc6a..97a3715ac8bd83dadfb23555a398260de144ab9e 100644 (file)
--- a/arch/powerpc/kernel/iomap.c
+++ b/arch/powerpc/kernel/iomap.c
@@ -119,24 +119,6 @@ EXPORT_SYMBOL(ioport_map);
 EXPORT_SYMBOL(ioport_unmap);
 
 #ifdef CONFIG_PCI
-void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
-{
-       resource_size_t start = pci_resource_start(dev, bar);
-       resource_size_t 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)
-               return ioremap(start, len);
-       /* What? */
-       return NULL;
-}
-
 void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
 {
        if (isa_vaddr_is_ioport(addr))
@@ -146,6 +128,5 @@ void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
        iounmap(addr);
 }
 
-EXPORT_SYMBOL(pci_iomap);
 EXPORT_SYMBOL(pci_iounmap);
 #endif /* CONFIG_PCI */

diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig
index 31e1adeaa92a371b334d1c3329f6550d5f3edaec..0cfb46d54b8c922db3b4136b1f7eb021213c48e7 100644 (file)
--- a/arch/powerpc/platforms/Kconfig
+++ b/arch/powerpc/platforms/Kconfig
@@ -175,9 +175,6 @@ config PPC_INDIRECT_MMIO
 config PPC_IO_WORKAROUNDS
        bool
 
-config GENERIC_IOMAP
-       bool
-
 source "drivers/cpufreq/Kconfig"
 
 menu "CPU Frequency drivers"

diff --git a/arch/score/Kconfig b/arch/score/Kconfig
index 8b0c9464aa9d10ece5562bad884969665ee6f348..3df65d39abc15f361df4cc61eace374af74e4c17 100644 (file)
--- a/arch/score/Kconfig
+++ b/arch/score/Kconfig
@@ -4,6 +4,7 @@ config SCORE
        def_bool y
        select HAVE_GENERIC_HARDIRQS
        select GENERIC_IRQ_SHOW
+       select GENERIC_IOMAP
        select HAVE_MEMBLOCK
        select HAVE_MEMBLOCK_NODE_MAP
        select ARCH_DISCARD_MEMBLOCK
@@ -36,9 +37,6 @@ endmenu
 config CPU_SCORE7
        bool
 
-config GENERIC_IOMAP
-       def_bool y
-
 config NO_DMA
        bool
        default y

diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 47a2f1c2cb0d4d63bf914d1e3f644111fe628276..3c8db65c89e5583ef16907f9d44eb0a9a74461ff 100644 (file)
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -85,9 +85,6 @@ config GENERIC_GPIO
 config GENERIC_CALIBRATE_DELAY
        bool
 
-config GENERIC_IOMAP
-       bool
-
 config GENERIC_CLOCKEVENTS
        def_bool y
 
@@ -861,6 +858,7 @@ config PCI
        bool "PCI support"
        depends on SYS_SUPPORTS_PCI
        select PCI_DOMAINS
+       select GENERIC_PCI_IOMAP
        help
          Find out whether you have a PCI motherboard. PCI is the name of a
          bus system, i.e. the way the CPU talks to the other stuff inside

diff --git a/arch/sh/drivers/pci/pci.c b/arch/sh/drivers/pci/pci.c
index c2691afe8f79c9e08e402dae2f31a5231e34c6f5..11aaf2fdec84348513565122448c13aa2b2b59fc 100644 (file)
--- a/arch/sh/drivers/pci/pci.c
+++ b/arch/sh/drivers/pci/pci.c
@@ -393,29 +393,6 @@ static void __iomem *ioport_map_pci(struct pci_dev *dev,
        return (void __iomem *)(chan->io_map_base + port);
 }
 
-void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
-{
-       resource_size_t start = pci_resource_start(dev, bar);
-       resource_size_t len = pci_resource_len(dev, bar);
-       unsigned long flags = pci_resource_flags(dev, bar);
-
-       if (unlikely(!len || !start))
-               return NULL;
-       if (maxlen && len > maxlen)
-               len = maxlen;
-
-       if (flags & IORESOURCE_IO)
-               return ioport_map_pci(dev, start, len);
-       if (flags & IORESOURCE_MEM) {
-               if (flags & IORESOURCE_CACHEABLE)
-                       return ioremap(start, len);
-               return ioremap_nocache(start, len);
-       }
-
-       return NULL;
-}
-EXPORT_SYMBOL(pci_iomap);
-
 void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
 {
        iounmap(addr);

diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 868ea08dff0ba55e29dd8a79e7f34b74b820fcb3..96657992a72eef8f69580cc9cdb12e2c184639ec 100644 (file)
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -28,6 +28,7 @@ config SPARC
        select HAVE_GENERIC_HARDIRQS
        select GENERIC_IRQ_SHOW
        select USE_GENERIC_SMP_HELPERS if SMP
+       select GENERIC_PCI_IOMAP
 
 config SPARC32
        def_bool !64BIT

diff --git a/arch/sparc/include/asm/io_32.h b/arch/sparc/include/asm/io_32.h
index c2ced21c9dc19a7c284960d6a180f30345e5120f..2006e5d359dfb5f602ab004208ea60d610e15a6d 100644 (file)
--- a/arch/sparc/include/asm/io_32.h
+++ b/arch/sparc/include/asm/io_32.h
@@ -7,6 +7,7 @@
 
 #include <asm/page.h>      /* IO address mapping routines need this */
 #include <asm/system.h>
+#include <asm-generic/pci_iomap.h>
 
 #define page_to_phys(page)     (page_to_pfn(page) << PAGE_SHIFT)
 
@@ -324,7 +325,6 @@ extern void ioport_unmap(void __iomem *);
 
 /* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
 struct pci_dev;
-extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
 extern void pci_iounmap(struct pci_dev *dev, void __iomem *);
 
 /*

diff --git a/arch/sparc/include/asm/io_64.h b/arch/sparc/include/asm/io_64.h
index 9c8965415f0a5187cd550435341029f553bdbfe2..9481e5a6fa90e218ffa2124a0feef91ffd228b4a 100644 (file)
--- a/arch/sparc/include/asm/io_64.h
+++ b/arch/sparc/include/asm/io_64.h
@@ -8,6 +8,7 @@
 #include <asm/page.h>      /* IO address mapping routines need this */
 #include <asm/system.h>
 #include <asm/asi.h>
+#include <asm-generic/pci_iomap.h>
 
 /* PC crapola... */
 #define __SLOW_DOWN_IO do { } while (0)
@@ -514,7 +515,6 @@ extern void ioport_unmap(void __iomem *);
 
 /* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
 struct pci_dev;
-extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
 extern void pci_iounmap(struct pci_dev *dev, void __iomem *);
 
 static inline int sbus_can_dma_64bit(void)

diff --git a/arch/sparc/lib/iomap.c b/arch/sparc/lib/iomap.c
index 9ef37e13a920e28ba99e197dc50dff7b812c5972..c4d42a50ebc06d3f92fdae70aa7d1f1d64a5b6f7 100644 (file)
--- a/arch/sparc/lib/iomap.c
+++ b/arch/sparc/lib/iomap.c
@@ -18,31 +18,8 @@ void ioport_unmap(void __iomem *addr)
 EXPORT_SYMBOL(ioport_map);
 EXPORT_SYMBOL(ioport_unmap);
 
-/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
-void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
-{
-       resource_size_t start = pci_resource_start(dev, bar);
-       resource_size_t len = pci_resource_len(dev, bar);
-       unsigned long flags = pci_resource_flags(dev, bar);
-
-       if (!len || !start)
-               return NULL;
-       if (maxlen && len > maxlen)
-               len = maxlen;
-       if (flags & IORESOURCE_IO)
-               return ioport_map(start, len);
-       if (flags & IORESOURCE_MEM) {
-               if (flags & IORESOURCE_CACHEABLE)
-                       return ioremap(start, len);
-               return ioremap_nocache(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);

diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 70a0de46cd1be8e4bc4c193ef3b4d213f89a368f..11270ca22c0a7b880718cd832a3e890f0b69c28f 100644 (file)
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -321,6 +321,7 @@ config PCI
        bool "PCI support"
        default y
        select PCI_DOMAINS
+       select GENERIC_PCI_IOMAP
        ---help---
          Enable PCI root complex support, so PCIe endpoint devices can
          be attached to the Tile chip.  Many, but not all, PCI devices

diff --git a/arch/tile/include/asm/io.h b/arch/tile/include/asm/io.h
index c9ea1652af03c609f355ec12c456a45e0dd826f3..d2152deb1f3cf6a3bc352d92d445df4157a0924e 100644 (file)
--- a/arch/tile/include/asm/io.h
+++ b/arch/tile/include/asm/io.h
@@ -204,7 +204,8 @@ static inline long ioport_panic(void)
 
 static inline void __iomem *ioport_map(unsigned long port, unsigned int len)
 {
-       return (void __iomem *) ioport_panic();
+       pr_info("ioport_map: mapping IO resources is unsupported on tile.\n");
+       return NULL;
 }
 
 static inline void ioport_unmap(void __iomem *addr)

diff --git a/arch/tile/include/asm/pci.h b/arch/tile/include/asm/pci.h
index 7f03cefed1b92079687a2ca838cd9d700a600a58..1d25fea42e547a554344aa47e25abb107c646aa5 100644 (file)
--- a/arch/tile/include/asm/pci.h
+++ b/arch/tile/include/asm/pci.h
@@ -16,6 +16,7 @@
 #define _ASM_TILE_PCI_H
 
 #include <linux/pci.h>
+#include <asm-generic/pci_iomap.h>
 
 /*
  * Structure of a PCI controller (host bridge)
@@ -49,7 +50,6 @@ struct pci_controller {
 int __devinit tile_pci_init(void);
 int __devinit pcibios_init(void);
 
-void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
 static inline void pci_iounmap(struct pci_dev *dev, void __iomem *addr) {}
 
 void __devinit pcibios_fixup_bus(struct pci_bus *bus);

diff --git a/arch/tile/kernel/pci.c b/arch/tile/kernel/pci.c
index 9d610d3fb11e9ac93c6e17875cff26257fa89e46..25567934a21e90cc5546a7495d784daa2e4e8cfa 100644 (file)
--- a/arch/tile/kernel/pci.c
+++ b/arch/tile/kernel/pci.c
@@ -466,27 +466,6 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
        return 0;
 }
 
-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_MEM)) {
-               pr_info("PCI: Trying to map invalid resource %#lx\n", flags);
-               start = 0;
-       }
-
-       return (void __iomem *)start;
-}
-EXPORT_SYMBOL(pci_iomap);
-
-
 /****************************************************************
  *
  * Tile PCI config space read/write routines

diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig
index 942ed6174f1d073e565d52e5dc074c7e84d3b533..eeb8054c7cd84347d242bba052c44cd64a5da5af 100644 (file)
--- a/arch/unicore32/Kconfig
+++ b/arch/unicore32/Kconfig
@@ -12,6 +12,7 @@ config UNICORE32
        select GENERIC_IRQ_PROBE
        select GENERIC_IRQ_SHOW
        select ARCH_WANT_FRAME_POINTERS
+       select GENERIC_IOMAP
        help
          UniCore-32 is 32-bit Instruction Set Architecture,
          including a series of low-power-consumption RISC chip
@@ -30,9 +31,6 @@ config GENERIC_CLOCKEVENTS
 config GENERIC_CSUM
        def_bool y
 
-config GENERIC_IOMAP
-       def_bool y
-
 config NO_IOPORT
        bool
 

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index d6ddc0bfe36a8b09c4f25e61944704133bd1e85d..1a31254ceb839348de42bd0473e20c2da21e3eb0 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -78,6 +78,7 @@ config X86
        select HAVE_BPF_JIT if (X86_64 && NET)
        select CLKEVT_I8253
        select ARCH_HAVE_NMI_SAFE_CMPXCHG
+       select GENERIC_IOMAP
 
 config INSTRUCTION_DECODER
        def_bool (KPROBES || PERF_EVENTS)
@@ -143,9 +144,6 @@ config NEED_SG_DMA_LENGTH
 config GENERIC_ISA_DMA
        def_bool ISA_DMA_API
 
-config GENERIC_IOMAP
-       def_bool y
-
 config GENERIC_BUG
        def_bool y
        depends on BUG

diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
index c2cf2eda062635f56c982547bd87c2796ad62a44..448303bdb85fd8009fdb6a6367fa9f2ed69b80ba 100644 (file)
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h
@@ -19,6 +19,8 @@
 #include <asm-generic/iomap.h>
 #endif
 
+#include <asm-generic/pci_iomap.h>
+
 #ifndef mmiowb
 #define mmiowb() do {} while (0)
 #endif
@@ -283,9 +285,7 @@ static inline void writesb(const void __iomem *addr, const void *buf, int len)
 #define __io_virt(x) ((void __force *) (x))
 
 #ifndef CONFIG_GENERIC_IOMAP
-/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
 struct pci_dev;
-extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
 static inline void pci_iounmap(struct pci_dev *dev, void __iomem *p)
 {
 }

diff --git a/include/asm-generic/iomap.h b/include/asm-generic/iomap.h
index 98dcd76ce836db71243b031a2bdfc301627d7a03..8a3d4fde26040600f7ddb9d7c3e67a4807b265ff 100644 (file)
--- a/include/asm-generic/iomap.h
+++ b/include/asm-generic/iomap.h
@@ -67,18 +67,15 @@ extern void ioport_unmap(void __iomem *);
 #endif
 
 #ifdef CONFIG_PCI
-/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
+/* Destroy a virtual mapping cookie for a PCI BAR (memory or IO) */
 struct pci_dev;
-extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
 extern void pci_iounmap(struct pci_dev *dev, void __iomem *);
 #else
 struct pci_dev;
-static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
-{
-       return NULL;
-}
 static inline void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
 { }
 #endif
 
+#include <asm-generic/pci_iomap.h>
+
 #endif

diff --git a/include/asm-generic/pci_iomap.h b/include/asm-generic/pci_iomap.h
new file mode 100644 (file)
index 0000000..8de4b73
--- /dev/null
+++ b/include/asm-generic/pci_iomap.h
@@ -0,0 +1,25 @@
+/* Generic I/O port emulation, based on MN10300 code
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#ifndef __ASM_GENERIC_PCI_IOMAP_H
+#define __ASM_GENERIC_PCI_IOMAP_H
+
+struct pci_dev;
+#ifdef CONFIG_PCI
+/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
+extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
+#else
+static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
+{
+       return NULL;
+}
+#endif
+
+#endif /* __ASM_GENERIC_IO_H */

diff --git a/lib/Kconfig b/lib/Kconfig
index f34be6417d712b2cf524de7e0897d1496520f8a6..7f6b8bca8c25b51bd0f528a8feb136d703c422ae 100644 (file)
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -19,6 +19,13 @@ config RATIONAL
 config GENERIC_FIND_FIRST_BIT
        bool
 
+config GENERIC_PCI_IOMAP
+       bool
+
+config GENERIC_IOMAP
+       bool
+       select GENERIC_PCI_IOMAP
+
 config CRC_CCITT
        tristate "CRC-CCITT functions"
        help

diff --git a/lib/Makefile b/lib/Makefile
index c0ffaaff653474ad553ceec7ff26dfa6634b0792..884ed376164d2ea688d7251fa503a4e86db3ca61 100644 (file)
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -33,6 +33,7 @@ endif
 
 lib-$(CONFIG_HOTPLUG) += kobject_uevent.o
 obj-$(CONFIG_GENERIC_IOMAP) += iomap.o
+obj-$(CONFIG_GENERIC_PCI_IOMAP) += pci_iomap.o
 obj-$(CONFIG_HAS_IOMEM) += iomap_copy.o devres.o
 obj-$(CONFIG_CHECK_SIGNATURE) += check_signature.o
 obj-$(CONFIG_DEBUG_LOCKING_API_SELFTESTS) += locking-selftest.o

diff --git a/lib/iomap.c b/lib/iomap.c
index 5dbcb4b2d864b244d97d289fb7c0f7bc18651ea0..ada922a808e6d328983fa5406284eacf3eb93cf4 100644 (file)
--- a/lib/iomap.c
+++ b/lib/iomap.c
@@ -242,45 +242,11 @@ EXPORT_SYMBOL(ioport_unmap);
 #endif /* CONFIG_HAS_IOPORT */
 
 #ifdef CONFIG_PCI
-/**
- * pci_iomap - create a virtual mapping cookie for a PCI BAR
- * @dev: PCI device that owns the BAR
- * @bar: BAR number
- * @maxlen: length of the memory to map
- *
- * Using this function you will get a __iomem address to your device BAR.
- * You can access it using ioread*() and iowrite*(). These functions hide
- * the details if this is a MMIO or PIO address space and will just do what
- * you expect from them in the correct way.
- *
- * @maxlen specifies the maximum length to map. If you want to get access to
- * the complete BAR without checking for its length first, pass %0 here.
- * */
-void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
-{
-       resource_size_t start = pci_resource_start(dev, bar);
-       resource_size_t len = pci_resource_len(dev, bar);
-       unsigned long flags = pci_resource_flags(dev, bar);
-
-       if (!len || !start)
-               return NULL;
-       if (maxlen && len > maxlen)
-               len = maxlen;
-       if (flags & IORESOURCE_IO)
-               return ioport_map(start, len);
-       if (flags & IORESOURCE_MEM) {
-               if (flags & IORESOURCE_CACHEABLE)
-                       return ioremap(start, len);
-               return ioremap_nocache(start, len);
-       }
-       /* What? */
-       return NULL;
-}
-
+/* Hide the details if this is a MMIO or PIO address space and just do what
+ * you expect in the correct way. */
 void pci_iounmap(struct pci_dev *dev, void __iomem * addr)
 {
        IO_COND(addr, /* nothing */, iounmap(addr));
 }
-EXPORT_SYMBOL(pci_iomap);
 EXPORT_SYMBOL(pci_iounmap);
 #endif /* CONFIG_PCI */

diff --git a/lib/pci_iomap.c b/lib/pci_iomap.c
new file mode 100644 (file)
index 0000000..4b0fdc2
--- /dev/null
+++ b/lib/pci_iomap.c
@@ -0,0 +1,48 @@
+/*
+ * Implement the default iomap interfaces
+ *
+ * (C) Copyright 2004 Linus Torvalds
+ */
+#include <linux/pci.h>
+#include <linux/io.h>
+
+#include <linux/export.h>
+
+#ifdef CONFIG_PCI
+/**
+ * pci_iomap - create a virtual mapping cookie for a PCI BAR
+ * @dev: PCI device that owns the BAR
+ * @bar: BAR number
+ * @maxlen: length of the memory to map
+ *
+ * Using this function you will get a __iomem address to your device BAR.
+ * You can access it using ioread*() and iowrite*(). These functions hide
+ * the details if this is a MMIO or PIO address space and will just do what
+ * you expect from them in the correct way.
+ *
+ * @maxlen specifies the maximum length to map. If you want to get access to
+ * the complete BAR without checking for its length first, pass %0 here.
+ * */
+void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
+{
+       resource_size_t start = pci_resource_start(dev, bar);
+       resource_size_t len = pci_resource_len(dev, bar);
+       unsigned long flags = pci_resource_flags(dev, bar);
+
+       if (!len || !start)
+               return NULL;
+       if (maxlen && len > maxlen)
+               len = maxlen;
+       if (flags & IORESOURCE_IO)
+               return ioport_map(start, len);
+       if (flags & IORESOURCE_MEM) {
+               if (flags & IORESOURCE_CACHEABLE)
+                       return ioremap(start, len);
+               return ioremap_nocache(start, len);
+       }
+       /* What? */
+       return NULL;
+}
+
+EXPORT_SYMBOL(pci_iomap);
+#endif /* CONFIG_PCI */