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#ifndef __ALPHA_POLARIS__H__

#define __ALPHA_POLARIS__H__

#include <linux/types.h>

#include <asm/compiler.h>

/*

 * POLARIS is the internal name for a core logic chipset which provides

 * memory controller and PCI access for the 21164PC chip based systems.

 *

 * This file is based on:

 *

 * Polaris System Controller

 * Device Functional Specification

 * 22-Jan-98

 * Rev. 4.2

 *

 */

/* Polaris memory regions */

#define POLARIS_SPARSE_MEM_BASE         (IDENT_ADDR + 0xf800000000)

#define POLARIS_DENSE_MEM_BASE          (IDENT_ADDR + 0xf900000000)

#define POLARIS_SPARSE_IO_BASE          (IDENT_ADDR + 0xf980000000)

#define POLARIS_SPARSE_CONFIG_BASE      (IDENT_ADDR + 0xf9c0000000)

#define POLARIS_IACK_BASE               (IDENT_ADDR + 0xf9f8000000)

#define POLARIS_DENSE_IO_BASE           (IDENT_ADDR + 0xf9fc000000)

#define POLARIS_DENSE_CONFIG_BASE       (IDENT_ADDR + 0xf9fe000000)

#define POLARIS_IACK_SC                 POLARIS_IACK_BASE

/* The Polaris command/status registers live in PCI Config space for

 * bus 0/device 0.  As such, they may be bytes, words, or doublewords.

 */

#define POLARIS_W_VENID         (POLARIS_DENSE_CONFIG_BASE)

#define POLARIS_W_DEVID         (POLARIS_DENSE_CONFIG_BASE+2)

#define POLARIS_W_CMD           (POLARIS_DENSE_CONFIG_BASE+4)

#define POLARIS_W_STATUS        (POLARIS_DENSE_CONFIG_BASE+6)

/*

 * Data structure for handling POLARIS machine checks:

 */

struct el_POLARIS_sysdata_mcheck {

    u_long      psc_status;

    u_long      psc_pcictl0;

    u_long      psc_pcictl1;

    u_long      psc_pcictl2;

};

#ifdef __KERNEL__

#ifndef __EXTERN_INLINE

#define __EXTERN_INLINE extern inline

#define __IO_EXTERN_INLINE

#endif

/*

 * I/O functions:

 *

 * POLARIS, the PCI/memory support chipset for the PCA56 (21164PC)

 * processors, can use either a sparse address  mapping scheme, or the

 * so-called byte-word PCI address space, to get at PCI memory and I/O.

 *

 * However, we will support only the BWX form.

 */

#define vucp    volatile unsigned char *

#define vusp    volatile unsigned short *

#define vuip    volatile unsigned int  *

#define vulp    volatile unsigned long  *

__EXTERN_INLINE u8 polaris_inb(unsigned long addr)

{

        /* ??? I wish I could get rid of this.  But there's no ioremap

           equivalent for I/O space.  PCI I/O can be forced into the

           POLARIS I/O region, but that doesn't take care of legacy

           ISA crap.  */

        return __kernel_ldbu(*(vucp)(addr + POLARIS_DENSE_IO_BASE));

}

__EXTERN_INLINE void polaris_outb(u8 b, unsigned long addr)

{

        __kernel_stb(b, *(vucp)(addr + POLARIS_DENSE_IO_BASE));

        mb();

}

__EXTERN_INLINE u16 polaris_inw(unsigned long addr)

{

        return __kernel_ldwu(*(vusp)(addr + POLARIS_DENSE_IO_BASE));

}

__EXTERN_INLINE void polaris_outw(u16 b, unsigned long addr)

{

        __kernel_stw(b, *(vusp)(addr + POLARIS_DENSE_IO_BASE));

        mb();

}

__EXTERN_INLINE u32 polaris_inl(unsigned long addr)

{

        return *(vuip)(addr + POLARIS_DENSE_IO_BASE);

}

__EXTERN_INLINE void polaris_outl(u32 b, unsigned long addr)

{

        *(vuip)(addr + POLARIS_DENSE_IO_BASE) = b;

        mb();

}

/*

 * Memory functions.  Polaris allows all accesses (byte/word

 * as well as long/quad) to be done through dense space.

 *

 * We will only support DENSE access via BWX insns.

 */

__EXTERN_INLINE u8 polaris_readb(unsigned long addr)

{

        return __kernel_ldbu(*(vucp)addr);

}

__EXTERN_INLINE u16 polaris_readw(unsigned long addr)

{

        return __kernel_ldwu(*(vusp)addr);

}

__EXTERN_INLINE u32 polaris_readl(unsigned long addr)

{

        return (*(vuip)addr) & 0xffffffff;

}

__EXTERN_INLINE u64 polaris_readq(unsigned long addr)

{

        return *(vulp)addr;

}

__EXTERN_INLINE void polaris_writeb(u8 b, unsigned long addr)

{

        __kernel_stb(b, *(vucp)addr);

}

__EXTERN_INLINE void polaris_writew(u16 b, unsigned long addr)

{

        __kernel_stw(b, *(vusp)addr);

}

__EXTERN_INLINE void polaris_writel(u32 b, unsigned long addr)

{

        *(vuip)addr = b;

}

__EXTERN_INLINE void polaris_writeq(u64 b, unsigned long addr)

{

        *(vulp)addr = b;

}

__EXTERN_INLINE unsigned long polaris_ioremap(unsigned long addr,

                                              unsigned long size

                                              __attribute__((unused)))

{

        return addr + POLARIS_DENSE_MEM_BASE;

}

__EXTERN_INLINE void polaris_iounmap(unsigned long addr)

{

        return;

}

__EXTERN_INLINE int polaris_is_ioaddr(unsigned long addr)

{

        return addr >= POLARIS_SPARSE_MEM_BASE;

}

#undef vucp

#undef vusp

#undef vuip

#undef vulp

#ifdef __WANT_IO_DEF

#define __inb(p)                polaris_inb((unsigned long)(p))

#define __inw(p)                polaris_inw((unsigned long)(p))

#define __inl(p)                polaris_inl((unsigned long)(p))

#define __outb(x,p)             polaris_outb((x),(unsigned long)(p))

#define __outw(x,p)             polaris_outw((x),(unsigned long)(p))

#define __outl(x,p)             polaris_outl((x),(unsigned long)(p))

#define __readb(a)              polaris_readb((unsigned long)(a))

#define __readw(a)              polaris_readw((unsigned long)(a))

#define __readl(a)              polaris_readl((unsigned long)(a))

#define __readq(a)              polaris_readq((unsigned long)(a))

#define __writeb(x,a)           polaris_writeb((x),(unsigned long)(a))

#define __writew(x,a)           polaris_writew((x),(unsigned long)(a))

#define __writel(x,a)           polaris_writel((x),(unsigned long)(a))

#define __writeq(x,a)           polaris_writeq((x),(unsigned long)(a))

#define __ioremap(a,s)          polaris_ioremap((unsigned long)(a),(s))

#define __iounmap(a)            polaris_iounmap((unsigned long)(a))

#define __is_ioaddr(a)          polaris_is_ioaddr((unsigned long)(a))

#define inb(p)                  __inb(p)

#define inw(p)                  __inw(p)

#define inl(p)                  __inl(p)

#define outb(x,p)               __outb((x),(p))

#define outw(x,p)               __outw((x),(p))

#define outl(x,p)               __outl((x),(p))

#define __raw_readb(a)          __readb(a)

#define __raw_readw(a)          __readw(a)

#define __raw_readl(a)          __readl(a)

#define __raw_readq(a)          __readq(a)

#define __raw_writeb(v,a)       __writeb((v),(a))

#define __raw_writew(v,a)       __writew((v),(a))

#define __raw_writel(v,a)       __writel((v),(a))

#define __raw_writeq(v,a)       __writeq((v),(a))

#endif /* __WANT_IO_DEF */

#ifdef __IO_EXTERN_INLINE

#undef __EXTERN_INLINE

#undef __IO_EXTERN_INLINE

#endif

#endif /* __KERNEL__ */

#endif /* __ALPHA_POLARIS__H__ */