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[MIPS] Iomap implementation.

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This implementation has support for the concept of one separate ioport
address space by PCI domain.  A pointer to the virtual address where
the port space of a domain has been mapped has been added to struct
pci_controller and systems should be fixed to fill in this value. For
single domain systems this will be the same value as passed to
set_io_port_base().

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2006-12-07 15:35:43 +01:00
commit 140c1729a2
6 changed files with 287 additions and 81 deletions
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29
include/asm-mips/io.h
View file

@ -20,6 +20,7 @@
#include <asm/byteorder.h>
#include <asm/cpu.h>
#include <asm/cpu-features.h>
#include <asm-generic/iomap.h>
#include <asm/page.h>
#include <asm/pgtable-bits.h>
#include <asm/processor.h>
@ -517,34 +518,6 @@ static inline void memcpy_toio(volatile void __iomem *dst, const void *src, int
memcpy((void __force *) dst, src, count);
}
/*
* Memory Mapped I/O
*/
#define ioread8(addr) readb(addr)
#define ioread16(addr) readw(addr)
#define ioread32(addr) readl(addr)
#define iowrite8(b,addr) writeb(b,addr)
#define iowrite16(w,addr) writew(w,addr)
#define iowrite32(l,addr) writel(l,addr)
#define ioread8_rep(a,b,c) readsb(a,b,c)
#define ioread16_rep(a,b,c) readsw(a,b,c)
#define ioread32_rep(a,b,c) readsl(a,b,c)
#define iowrite8_rep(a,b,c) writesb(a,b,c)
#define iowrite16_rep(a,b,c) writesw(a,b,c)
#define iowrite32_rep(a,b,c) writesl(a,b,c)
/* 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 *);
/*
* ISA space is 'always mapped' on currently supported MIPS systems, no need
* to explicitly ioremap() it. The fact that the ISA IO space is mapped

1
include/asm-mips/pci.h
View file

@ -32,6 +32,7 @@ struct pci_controller {
unsigned long mem_offset;
struct resource *io_resource;
unsigned long io_offset;
unsigned long io_map_base;
unsigned int index;
/* For compatibility with current (as of July 2003) pciutils