diff options
Diffstat (limited to 'include/asm-cris/io.h')
| -rw-r--r-- | include/asm-cris/io.h | 103 |
1 files changed, 81 insertions, 22 deletions
diff --git a/include/asm-cris/io.h b/include/asm-cris/io.h index 1d2b51701e8d..16e791b3c721 100644 --- a/include/asm-cris/io.h +++ b/include/asm-cris/io.h @@ -3,6 +3,21 @@ #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. @@ -18,14 +33,17 @@ extern inline void * phys_to_virt(unsigned long address) return __va(address); } -extern void * __ioremap(unsigned long offset, unsigned long size, unsigned long flags); +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); -extern inline void * ioremap (unsigned long offset, unsigned long size) +extern inline void __iomem * ioremap (unsigned long offset, unsigned long size) { return __ioremap(offset, size, 0); } -extern void iounmap(void *addr); +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 @@ -39,9 +57,32 @@ extern void iounmap(void *addr); * differently. On the CRIS architecture, we just read/write the * memory location directly. */ -#define readb(addr) (*(volatile unsigned char *) (addr)) -#define readw(addr) (*(volatile unsigned short *) (addr)) -#define readl(addr) (*(volatile unsigned int *) (addr)) +#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) @@ -49,9 +90,27 @@ extern void iounmap(void *addr); #define __raw_readw readw #define __raw_readl readl -#define writeb(b,addr) ((*(volatile unsigned char *) (addr)) = (b)) -#define writew(b,addr) ((*(volatile unsigned short *) (addr)) = (b)) -#define writel(b,addr) ((*(volatile unsigned int *) (addr)) = (b)) +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 @@ -66,25 +125,25 @@ extern void iounmap(void *addr); * Again, CRIS does not require mem IO specific function. */ -#define eth_io_copy_and_sum(a,b,c,d) eth_copy_and_sum((a),(void *)(b),(c),(d)) +#define eth_io_copy_and_sum(a,b,c,d) eth_copy_and_sum((a),(void __force *)(b),(c),(d)) /* 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(x) (0) -#define inw(x) (0) -#define inl(x) (0) -#define outb(x,y) -#define outw(x,y) -#define outl(x,y) -#define insb(x,y,z) -#define insw(x,y,z) -#define insl(x,y,z) -#define outsb(x,y,z) -#define outsw(x,y,z) -#define outsl(x,y,z) +#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 |