mirror of
https://github.com/torvalds/linux.git
synced 2024-11-30 16:11:38 +00:00
4ec031166f
On all targets that sucker boils down to memcpy_fromio(sbk->data, from, len). The function name is highly misguiding (it _never_ does any checksums), the last argument is just a noise and simply expanding the call to memcpy_fromio() gives shorter and more readable source. For a lot of reasons it has almost no remaining users, so it's better to just outright kill it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
155 lines
4.7 KiB
C
155 lines
4.7 KiB
C
#ifndef _ASM_CRIS_IO_H
|
|
#define _ASM_CRIS_IO_H
|
|
|
|
#include <asm/page.h> /* for __va, __pa */
|
|
#include <asm/arch/io.h>
|
|
#include <linux/kernel.h>
|
|
|
|
struct cris_io_operations
|
|
{
|
|
u32 (*read_mem)(void *addr, int size);
|
|
void (*write_mem)(u32 val, int size, void *addr);
|
|
u32 (*read_io)(u32 port, void *addr, int size, int count);
|
|
void (*write_io)(u32 port, void *addr, int size, int count);
|
|
};
|
|
|
|
#ifdef CONFIG_PCI
|
|
extern struct cris_io_operations *cris_iops;
|
|
#else
|
|
#define cris_iops ((struct cris_io_operations*)NULL)
|
|
#endif
|
|
|
|
/*
|
|
* Change virtual addresses to physical addresses and vv.
|
|
*/
|
|
|
|
static inline unsigned long virt_to_phys(volatile void * address)
|
|
{
|
|
return __pa(address);
|
|
}
|
|
|
|
static inline void * phys_to_virt(unsigned long address)
|
|
{
|
|
return __va(address);
|
|
}
|
|
|
|
extern void __iomem * __ioremap(unsigned long offset, unsigned long size, unsigned long flags);
|
|
extern void __iomem * __ioremap_prot(unsigned long phys_addr, unsigned long size, pgprot_t prot);
|
|
|
|
static inline void __iomem * ioremap (unsigned long offset, unsigned long size)
|
|
{
|
|
return __ioremap(offset, size, 0);
|
|
}
|
|
|
|
extern void iounmap(volatile void * __iomem addr);
|
|
|
|
extern void __iomem * ioremap_nocache(unsigned long offset, unsigned long size);
|
|
|
|
/*
|
|
* IO bus memory addresses are also 1:1 with the physical address
|
|
*/
|
|
#define virt_to_bus virt_to_phys
|
|
#define bus_to_virt phys_to_virt
|
|
|
|
/*
|
|
* readX/writeX() are used to access memory mapped devices. On some
|
|
* architectures the memory mapped IO stuff needs to be accessed
|
|
* differently. On the CRIS architecture, we just read/write the
|
|
* memory location directly.
|
|
*/
|
|
#ifdef CONFIG_PCI
|
|
#define PCI_SPACE(x) ((((unsigned)(x)) & 0x10000000) == 0x10000000)
|
|
#else
|
|
#define PCI_SPACE(x) 0
|
|
#endif
|
|
static inline unsigned char readb(const volatile void __iomem *addr)
|
|
{
|
|
if (PCI_SPACE(addr) && cris_iops)
|
|
return cris_iops->read_mem((void*)addr, 1);
|
|
else
|
|
return *(volatile unsigned char __force *) addr;
|
|
}
|
|
static inline unsigned short readw(const volatile void __iomem *addr)
|
|
{
|
|
if (PCI_SPACE(addr) && cris_iops)
|
|
return cris_iops->read_mem((void*)addr, 2);
|
|
else
|
|
return *(volatile unsigned short __force *) addr;
|
|
}
|
|
static inline unsigned int readl(const volatile void __iomem *addr)
|
|
{
|
|
if (PCI_SPACE(addr) && cris_iops)
|
|
return cris_iops->read_mem((void*)addr, 4);
|
|
else
|
|
return *(volatile unsigned int __force *) addr;
|
|
}
|
|
#define readb_relaxed(addr) readb(addr)
|
|
#define readw_relaxed(addr) readw(addr)
|
|
#define readl_relaxed(addr) readl(addr)
|
|
#define __raw_readb readb
|
|
#define __raw_readw readw
|
|
#define __raw_readl readl
|
|
|
|
static inline void writeb(unsigned char b, volatile void __iomem *addr)
|
|
{
|
|
if (PCI_SPACE(addr) && cris_iops)
|
|
cris_iops->write_mem(b, 1, (void*)addr);
|
|
else
|
|
*(volatile unsigned char __force *) addr = b;
|
|
}
|
|
static inline void writew(unsigned short b, volatile void __iomem *addr)
|
|
{
|
|
if (PCI_SPACE(addr) && cris_iops)
|
|
cris_iops->write_mem(b, 2, (void*)addr);
|
|
else
|
|
*(volatile unsigned short __force *) addr = b;
|
|
}
|
|
static inline void writel(unsigned int b, volatile void __iomem *addr)
|
|
{
|
|
if (PCI_SPACE(addr) && cris_iops)
|
|
cris_iops->write_mem(b, 4, (void*)addr);
|
|
else
|
|
*(volatile unsigned int __force *) addr = b;
|
|
}
|
|
#define __raw_writeb writeb
|
|
#define __raw_writew writew
|
|
#define __raw_writel writel
|
|
|
|
#define mmiowb()
|
|
|
|
#define memset_io(a,b,c) memset((void *)(a),(b),(c))
|
|
#define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c))
|
|
#define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c))
|
|
|
|
|
|
/* The following is junk needed for the arch-independent code but which
|
|
* we never use in the CRIS port
|
|
*/
|
|
|
|
#define IO_SPACE_LIMIT 0xffff
|
|
#define inb(port) (cris_iops ? cris_iops->read_io(port,NULL,1,1) : 0)
|
|
#define inw(port) (cris_iops ? cris_iops->read_io(port,NULL,2,1) : 0)
|
|
#define inl(port) (cris_iops ? cris_iops->read_io(port,NULL,4,1) : 0)
|
|
#define insb(port,addr,count) (cris_iops ? cris_iops->read_io(port,addr,1,count) : 0)
|
|
#define insw(port,addr,count) (cris_iops ? cris_iops->read_io(port,addr,2,count) : 0)
|
|
#define insl(port,addr,count) (cris_iops ? cris_iops->read_io(port,addr,4,count) : 0)
|
|
#define outb(data,port) if (cris_iops) cris_iops->write_io(port,(void*)(unsigned)data,1,1)
|
|
#define outw(data,port) if (cris_iops) cris_iops->write_io(port,(void*)(unsigned)data,2,1)
|
|
#define outl(data,port) if (cris_iops) cris_iops->write_io(port,(void*)(unsigned)data,4,1)
|
|
#define outsb(port,addr,count) if(cris_iops) cris_iops->write_io(port,(void*)addr,1,count)
|
|
#define outsw(port,addr,count) if(cris_iops) cris_iops->write_io(port,(void*)addr,2,count)
|
|
#define outsl(port,addr,count) if(cris_iops) cris_iops->write_io(port,(void*)addr,3,count)
|
|
|
|
/*
|
|
* Convert a physical pointer to a virtual kernel pointer for /dev/mem
|
|
* access
|
|
*/
|
|
#define xlate_dev_mem_ptr(p) __va(p)
|
|
|
|
/*
|
|
* Convert a virtual cached pointer to an uncached pointer
|
|
*/
|
|
#define xlate_dev_kmem_ptr(p) p
|
|
|
|
#endif
|