Subversion Repositories or1k

#ifndef _PPC64_IO_H

#define _PPC64_IO_H

/*

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version

 * 2 of the License, or (at your option) any later version.

 */

#include <linux/config.h>

#include <asm/page.h>

#include <asm/byteorder.h>

#ifdef CONFIG_PPC_ISERIES 

#include <asm/iSeries/iSeries_io.h>

#endif  

#include <asm/memory.h>

#include <asm/delay.h>

#define SIO_CONFIG_RA   0x398

#define SIO_CONFIG_RD   0x399

#define SLOW_DOWN_IO

/* Define this if you want to see virt_to_* messages */

#undef __IO_DEBUG

extern unsigned long isa_io_base;

extern unsigned long isa_mem_base;

extern unsigned long pci_io_base;

extern unsigned long pci_dram_offset;

extern int have_print;

#define _IO_BASE        isa_io_base

#define _ISA_MEM_BASE   isa_mem_base

#define PCI_DRAM_OFFSET pci_dram_offset

#ifdef CONFIG_PPC_ISERIES

#define readb(addr)             iSeries_Read_Byte((void*)(addr))  

#define readw(addr)             iSeries_Read_Word((void*)(addr))  

#define readl(addr)             iSeries_Read_Long((void*)(addr))

#define writeb(data, addr)      iSeries_Write_Byte(data,((void*)(addr)))

#define writew(data, addr)      iSeries_Write_Word(data,((void*)(addr)))

#define writel(data, addr)      iSeries_Write_Long(data,((void*)(addr)))

#define memset_io(a,b,c)        iSeries_memset_io((void *)(a),(b),(c))

#define memcpy_fromio(a,b,c)    iSeries_memcpy_fromio((void *)(a), (void *)(b), (c))

#define memcpy_toio(a,b,c)      iSeries_memcpy_toio((void *)(a), (void *)(b), (c))

#define inb(addr)               readb(((unsigned long)(addr)))  

#define inw(addr)               readw(((unsigned long)(addr)))  

#define inl(addr)               readl(((unsigned long)(addr)))

#define outb(data,addr)         writeb(data,((unsigned long)(addr)))  

#define outw(data,addr)         writew(data,((unsigned long)(addr)))  

#define outl(data,addr)         writel(data,((unsigned long)(addr)))

#else

#define readb(addr)             eeh_readb((void*)(addr))  

#define readw(addr)             eeh_readw((void*)(addr))  

#define readl(addr)             eeh_readl((void*)(addr))

#define writeb(data, addr)      eeh_writeb((data), ((void*)(addr)))

#define writew(data, addr)      eeh_writew((data), ((void*)(addr)))

#define writel(data, addr)      eeh_writel((data), ((void*)(addr)))

#define memset_io(a,b,c)        eeh_memset_io((void *)(a),(b),(c))

#define memcpy_fromio(a,b,c)    eeh_memcpy_fromio((a),(void *)(b),(c))

#define memcpy_toio(a,b,c)      eeh_memcpy_toio((void *)(a),(b),(c))

#define inb(port)               eeh_inb((unsigned long)port)

#define outb(val, port)         eeh_outb(val, (unsigned long)port)

#define inw(port)               eeh_inw((unsigned long)port)

#define outw(val, port)         eeh_outw(val, (unsigned long)port)

#define inl(port)               eeh_inl((unsigned long)port)

#define outl(val, port)         eeh_outl(val, (unsigned long)port)

/*

 * The __raw_read/write macros don't do byte-swapping.

 * They are needed for some PCI devices such as the Matrox graphics

 * adapter which is programmed to operate in big endian mode.

 */

#define __raw_readb(addr)              eeh_readb((void*)(addr))

#define __raw_readw(addr)              eeh_raw_readw((void*)(addr))

#define __raw_readl(addr)              eeh_raw_readl((void*)(addr))

#define __raw_writeb(data, addr)       eeh_writeb((data), ((void*)(addr)))

#define __raw_writew(data, addr)       eeh_raw_writew((data), ((void*)(addr)))

#define __raw_writel(data, addr)       eeh_raw_writel((data), ((void*)(addr)))

/*

 * The insw/outsw/insl/outsl macros don't do byte-swapping.

 * They are only used in practice for transferring buffers which

 * are arrays of bytes, and byte-swapping is not appropriate in

 * that case.  - paulus */

#define insb(port, buf, ns)     _insb((u8 *)((port)+pci_io_base), (buf), (ns))

#define outsb(port, buf, ns)    _outsb((u8 *)((port)+pci_io_base), (buf), (ns))

#define insw(port, buf, ns)     _insw_ns((u16 *)((port)+pci_io_base), (buf), (ns))

#define outsw(port, buf, ns)    _outsw_ns((u16 *)((port)+pci_io_base), (buf), (ns))

#define insl(port, buf, nl)     _insl_ns((u32 *)((port)+pci_io_base), (buf), (nl))

#define outsl(port, buf, nl)    _outsl_ns((u32 *)((port)+pci_io_base), (buf), (nl))

#endif

extern void _insb(volatile u8 *port, void *buf, int ns);

extern void _outsb(volatile u8 *port, const void *buf, int ns);

extern void _insw(volatile u16 *port, void *buf, int ns);

extern void _outsw(volatile u16 *port, const void *buf, int ns);

extern void _insl(volatile u32 *port, void *buf, int nl);

extern void _outsl(volatile u32 *port, const void *buf, int nl);

extern void _insw_ns(volatile u16 *port, void *buf, int ns);

extern void _outsw_ns(volatile u16 *port, const void *buf, int ns);

extern void _insl_ns(volatile u32 *port, void *buf, int nl);

extern void _outsl_ns(volatile u32 *port, const void *buf, int nl);

/*

 * output pause versions need a delay at least for the

 * w83c105 ide controller in a p610.

 */

#define inb_p(port)             inb(port)

#define outb_p(val, port)       (udelay(1), outb((val), (port)))

#define inw_p(port)             inw(port)

#define outw_p(val, port)       (udelay(1), outw((val), (port)))

#define inl_p(port)             inl(port)

#define outl_p(val, port)       (udelay(1), outl((val), (port)))

/*

 * The *_ns versions below don't do byte-swapping.

 * Neither do the standard versions now, these are just here

 * for older code.

 */

#define insw_ns(port, buf, ns)  _insw_ns((u16 *)((port)+pci_io_base), (buf), (ns))

#define outsw_ns(port, buf, ns) _outsw_ns((u16 *)((port)+pci_io_base), (buf), (ns))

#define insl_ns(port, buf, nl)  _insl_ns((u32 *)((port)+pci_io_base), (buf), (nl))

#define outsl_ns(port, buf, nl) _outsl_ns((u32 *)((port)+pci_io_base), (buf), (nl))

#define IO_SPACE_LIMIT ~(0UL)

#define MEM_SPACE_LIMIT ~(0UL)

#ifdef __KERNEL__

/*

 * Map in an area of physical address space, for accessing

 * I/O devices etc.

 */

extern void *__ioremap(unsigned long address, unsigned long size,

                       unsigned long flags);

extern void *ioremap(unsigned long address, unsigned long size);

#define ioremap_nocache(addr, size)     ioremap((addr), (size))

extern void iounmap(void *addr);

/*

 * Change virtual addresses to physical addresses and vv, for

 * addresses in the area where the kernel has the RAM mapped.

 */

static inline unsigned long virt_to_phys(volatile void * address)

{

#ifdef __IO_DEBUG

        printk("virt_to_phys: 0x%08lx -> 0x%08lx\n",

                        (unsigned long) address,

                        __pa((unsigned long)address));

#endif

        return __pa((unsigned long)address);

}

static inline void * phys_to_virt(unsigned long address)

{

#ifdef __IO_DEBUG

        printk("phys_to_virt: 0x%08lx -> 0x%08lx\n", address, __va(address));

#endif

        return (void *) __va(address);

}

/*

 * Change "struct page" to physical address.

 */

#define page_to_phys(page)      ((page - mem_map) << PAGE_SHIFT)

#endif /* __KERNEL__ */

static inline void iosync(void)

{

        __asm__ __volatile__ ("sync" : : : "memory");

}

/* Enforce in-order execution of data I/O.

 * No distinction between read/write on PPC; use eieio for all three.

 */

#define iobarrier_rw() eieio()

#define iobarrier_r()  eieio()

#define iobarrier_w()  eieio()

/*

 * 8, 16 and 32 bit, big and little endian I/O operations, with barrier.

 * Until we can validate all required device drivers are weakc safe, an

 * excess of syncs before the MMIO operations will make things work.  On

 * sstar, sync time is << than mmio time, so this should not be a big impact.

 */

static inline int in_8(volatile unsigned char *addr)

{

        int ret;

        __asm__ __volatile__("sync; lbz%U1%X1 %0,%1; sync" : "=r" (ret) : "m" (*addr));

        return ret;

}

static inline void out_8(volatile unsigned char *addr, int val)

{

        __asm__ __volatile__("sync; stb%U0%X0 %1,%0; sync" : "=m" (*addr) : "r" (val));

}

static inline int in_le16(volatile unsigned short *addr)

{

        int ret;

        __asm__ __volatile__("sync; lhbrx %0,0,%1; sync" : "=r" (ret) :

                              "r" (addr), "m" (*addr));

        return ret;

}

static inline int in_be16(volatile unsigned short *addr)

{

        int ret;

        __asm__ __volatile__("sync; lhz%U1%X1 %0,%1; sync" : "=r" (ret) : "m" (*addr));

        return ret;

}

static inline void out_le16(volatile unsigned short *addr, int val)

{

        __asm__ __volatile__("sync; sthbrx %1,0,%2; sync" : "=m" (*addr) :

                              "r" (val), "r" (addr));

}

static inline void out_be16(volatile unsigned short *addr, int val)

{

        __asm__ __volatile__("sync; sth%U0%X0 %1,%0; sync" : "=m" (*addr) : "r" (val));

}

static inline unsigned in_le32(volatile unsigned *addr)

{

        unsigned ret;

        __asm__ __volatile__("sync; lwbrx %0,0,%1; sync" : "=r" (ret) :

                             "r" (addr), "m" (*addr));

        return ret;

}

static inline unsigned in_be32(volatile unsigned *addr)

{

        unsigned ret;

        __asm__ __volatile__("sync; lwz%U1%X1 %0,%1; sync" : "=r" (ret) : "m" (*addr));

        return ret;

}

static inline void out_le32(volatile unsigned *addr, int val)

{

        __asm__ __volatile__("sync; stwbrx %1,0,%2; sync" : "=m" (*addr) :

                             "r" (val), "r" (addr));

}

static inline void out_be32(volatile unsigned *addr, int val)

{

        __asm__ __volatile__("sync; stw%U0%X0 %1,%0; sync" : "=m" (*addr) : "r" (val));

}

#ifndef CONFIG_PPC_ISERIES 

#include <asm/eeh.h>

#endif

#ifdef __KERNEL__

static inline int check_signature(unsigned long io_addr,

        const unsigned char *signature, int length)

{

        int retval = 0;

#ifndef CONFIG_PPC_ISERIES 

        do {

                if (readb(io_addr) != *signature)

                        goto out;

                io_addr++;

                signature++;

                length--;

        } while (length);

        retval = 1;

out:

#endif

        return retval;

}

/* Nothing to do */

#define dma_cache_inv(_start,_size)             do { } while (0)

#define dma_cache_wback(_start,_size)           do { } while (0)

#define dma_cache_wback_inv(_start,_size)       do { } while (0)

#endif /* __KERNEL__ */

#endif /* _PPC64_IO_H */