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/* $Id: pio.h,v 1.1.1.1 2004-04-15 02:42:28 phoenix Exp $

 *

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file "COPYING" in the main directory of this archive

 * for more details.

 *

 * Copyright (C) 1992 - 1997, 2000-2003 Silicon Graphics, Inc. All rights reserved.

 */

#ifndef _ASM_IA64_SN_PIO_H

#define _ASM_IA64_SN_PIO_H

#include <linux/types.h>

#include <asm/sn/sgi.h>

#include <asm/sn/driver.h>

/*

 * pioaddr_t    - The kernel virtual address that a PIO can be done upon.

 *                Should probably be (volatile void*) but EVEREST would do PIO

 *                to long mostly, just cast for other sizes.

 */

typedef volatile ulong* pioaddr_t;

/*

 * iopaddr_t    - the physical io space relative address (e.g. VME A16S 0x0800).

 * iosapce_t    - specifies the io address space to be mapped/accessed.

 * piomap_t     - the handle returned by pio_alloc() and used with all the pio

 *                access functions.

 */

typedef struct piomap {

        uint            pio_bus;

        uint            pio_adap;

        int             pio_flag;

        int             pio_reg;

        char            pio_name[7];    /* to identify the mapped device */

        struct piomap   *pio_next;      /* dlist to link active piomap's */

        struct piomap   *pio_prev;      /* for debug and error reporting */

        iopaddr_t       pio_iopmask;    /* valid iop address bit mask */

        iobush_t        pio_bushandle;  /* bus-level handle */

} piomap_t;

#define pio_type        pio_iospace.ios_type

#define pio_iopaddr     pio_iospace.ios_iopaddr

#define pio_size        pio_iospace.ios_size

#define pio_vaddr       pio_iospace.ios_vaddr

/* Macro to get/set PIO error function */

#define pio_seterrf(p,f)        (p)->pio_errfunc = (f)

#define pio_geterrf(p)          (p)->pio_errfunc

/*

 * piomap_t type defines

 */

#define PIOMAP_NTYPES   7

#define PIOMAP_A16N     VME_A16NP

#define PIOMAP_A16S     VME_A16S

#define PIOMAP_A24N     VME_A24NP

#define PIOMAP_A24S     VME_A24S

#define PIOMAP_A32N     VME_A32NP

#define PIOMAP_A32S     VME_A32S

#define PIOMAP_A64      6

#define PIOMAP_EISA_IO  0

#define PIOMAP_EISA_MEM 1

#define PIOMAP_PCI_IO   0

#define PIOMAP_PCI_MEM  1

#define PIOMAP_PCI_CFG  2

#define PIOMAP_PCI_ID   3

/* IBUS piomap types */

#define PIOMAP_FCI      0

/* dang gio piomap types */

#define PIOMAP_GIO32    0

#define PIOMAP_GIO64    1

#define ET_MEM          0

#define ET_IO           1

#define LAN_RAM         2

#define LAN_IO          3

#define PIOREG_NULL     (-1)

/* standard flags values for pio_map routines,

 * including {xtalk,pciio}_piomap calls.

 * NOTE: try to keep these in step with DMAMAP flags.

 */

#define PIOMAP_UNFIXED  0x0

#define PIOMAP_FIXED    0x1

#define PIOMAP_NOSLEEP  0x2

#define PIOMAP_INPLACE  0x4

#define PIOMAP_FLAGS    0x7

#endif  /* _ASM_IA64_SN_PIO_H */