of: implement pci_address_to_pio as weak function
Implement pci_address_to_pio as weak function to remove the dependency on
asm/prom.h. This is in preparation to make prom.h optional.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Grant Likely <grant.likely@linaro.org>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: x86@kernel.org
Cc: Grant Likely <grant.likely@linaro.org>
diff --git a/arch/microblaze/include/asm/prom.h b/arch/microblaze/include/asm/prom.h
index f05bedc..0ebd924 100644
--- a/arch/microblaze/include/asm/prom.h
+++ b/arch/microblaze/include/asm/prom.h
@@ -26,13 +26,4 @@
extern int of_early_console(void *version);
-/*
- * OF address retreival & translation
- */
-
-#ifdef CONFIG_PCI
-extern unsigned long pci_address_to_pio(phys_addr_t address);
-#define pci_address_to_pio pci_address_to_pio
-#endif /* CONFIG_PCI */
-
#endif /* _ASM_MICROBLAZE_PROM_H */
diff --git a/arch/mips/include/asm/prom.h b/arch/mips/include/asm/prom.h
index e3dbd0e..ccd2b75 100644
--- a/arch/mips/include/asm/prom.h
+++ b/arch/mips/include/asm/prom.h
@@ -19,17 +19,6 @@
extern void device_tree_init(void);
-static inline unsigned long pci_address_to_pio(phys_addr_t address)
-{
- /*
- * The ioport address can be directly used by inX() / outX()
- */
- BUG_ON(address > IO_SPACE_LIMIT);
-
- return (unsigned long) address;
-}
-#define pci_address_to_pio pci_address_to_pio
-
struct boot_param_header;
extern void __dt_setup_arch(struct boot_param_header *bph);
diff --git a/arch/powerpc/include/asm/prom.h b/arch/powerpc/include/asm/prom.h
index 7d0c7f3..bd215f7 100644
--- a/arch/powerpc/include/asm/prom.h
+++ b/arch/powerpc/include/asm/prom.h
@@ -30,11 +30,6 @@
extern u64 of_translate_dma_address(struct device_node *dev,
const __be32 *in_addr);
-#ifdef CONFIG_PCI
-extern unsigned long pci_address_to_pio(phys_addr_t address);
-#define pci_address_to_pio pci_address_to_pio
-#endif /* CONFIG_PCI */
-
/* Parse the ibm,dma-window property of an OF node into the busno, phys and
* size parameters.
*/
diff --git a/arch/x86/include/asm/prom.h b/arch/x86/include/asm/prom.h
index bade6ac..8ef2ec7 100644
--- a/arch/x86/include/asm/prom.h
+++ b/arch/x86/include/asm/prom.h
@@ -39,9 +39,6 @@
extern char cmd_line[COMMAND_LINE_SIZE];
-#define pci_address_to_pio pci_address_to_pio
-unsigned long pci_address_to_pio(phys_addr_t addr);
-
#define HAVE_ARCH_DEVTREE_FIXUPS
#endif /* __ASSEMBLY__ */
diff --git a/arch/x86/kernel/devicetree.c b/arch/x86/kernel/devicetree.c
index 679d676..cffd073 100644
--- a/arch/x86/kernel/devicetree.c
+++ b/arch/x86/kernel/devicetree.c
@@ -27,16 +27,6 @@
int __initdata of_ioapic;
-unsigned long pci_address_to_pio(phys_addr_t address)
-{
- /*
- * The ioport address can be directly used by inX / outX
- */
- BUG_ON(address >= (1 << 16));
- return (unsigned long)address;
-}
-EXPORT_SYMBOL_GPL(pci_address_to_pio);
-
void __init early_init_dt_scan_chosen_arch(unsigned long node)
{
BUG();
diff --git a/drivers/of/address.c b/drivers/of/address.c
index b55c218..556a7fb 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -626,6 +626,14 @@
}
EXPORT_SYMBOL(of_get_address);
+unsigned long __weak pci_address_to_pio(phys_addr_t address)
+{
+ if (address > IO_SPACE_LIMIT)
+ return (unsigned long)-1;
+
+ return (unsigned long) address;
+}
+
static int __of_address_to_resource(struct device_node *dev,
const __be32 *addrp, u64 size, unsigned int flags,
const char *name, struct resource *r)
diff --git a/drivers/of/of_pci.c b/drivers/of/of_pci.c
index e5ca008..8481996 100644
--- a/drivers/of/of_pci.c
+++ b/drivers/of/of_pci.c
@@ -2,7 +2,6 @@
#include <linux/export.h>
#include <linux/of.h>
#include <linux/of_pci.h>
-#include <asm/prom.h>
static inline int __of_pci_pci_compare(struct device_node *node,
unsigned int data)
diff --git a/include/linux/of_address.h b/include/linux/of_address.h
index 4c2e6f2..f6fc689 100644
--- a/include/linux/of_address.h
+++ b/include/linux/of_address.h
@@ -52,10 +52,7 @@
extern const __be32 *of_get_address(struct device_node *dev, int index,
u64 *size, unsigned int *flags);
-#ifndef pci_address_to_pio
-static inline unsigned long pci_address_to_pio(phys_addr_t addr) { return -1; }
-#define pci_address_to_pio pci_address_to_pio
-#endif
+extern unsigned long pci_address_to_pio(phys_addr_t addr);
extern int of_pci_range_parser_init(struct of_pci_range_parser *parser,
struct device_node *node);