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Commit 749805dc authored by David S. Miller's avatar David S. Miller
Browse files

[SPARC]: Add iomap interfaces. 



Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8e48aec7

arch/sparc/lib/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -9,3 +9,5 @@ lib-y := mul.o rem.o sdiv.o udiv.o umul.o urem.o ashrdi3.o memcpy.o memset.o \ 
	 strncpy_from_user.o divdi3.o udivdi3.o strlen_user.o \

	 copy_user.o locks.o atomic.o atomic32.o bitops.o \

	 lshrdi3.o ashldi3.o rwsem.o muldi3.o bitext.o



obj-y += iomap.o

arch/sparc/lib/iomap.c

0 → 100644
+48 −0
Original line number Diff line number Diff line 
/*

 * Implement the sparc iomap interfaces

 */

#include <linux/pci.h>

#include <linux/module.h>

#include <asm/io.h>



/* Create a virtual mapping cookie for an IO port range */

void __iomem *ioport_map(unsigned long port, unsigned int nr)

{

	return (void __iomem *) (unsigned long) port;

}



void ioport_unmap(void __iomem *addr)

{

	/* Nothing to do */

}

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)

{

	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 || !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);

include/asm-sparc/io.h

+16 −0
Original line number Diff line number Diff line
@@ -249,6 +249,22 @@ extern void __iomem *ioremap(unsigned long offset, unsigned long size); 
#define ioremap_nocache(X,Y)	ioremap((X),(Y))

extern void iounmap(volatile void __iomem *addr);



#define ioread8(X)			readb(X)

#define ioread16(X)			readw(X)

#define ioread32(X)			readl(X)

#define iowrite8(val,X)			writeb(val,X)

#define iowrite16(val,X)		writew(val,X)

#define iowrite32(val,X)		writel(val,X)



/* Create a virtual mapping cookie for an IO port range */

extern void __iomem *ioport_map(unsigned long port, unsigned int nr);

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 *);



/*

 * Bus number may be in res->flags... somewhere.

 */