include/asm-ia64/sn/pio.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 1992 - 1997, 2000-2003 Silicon Graphics, Inc. All rights reserved.
   7  */
   8 #ifndef _ASM_IA64_SN_PIO_H
   9 #define _ASM_IA64_SN_PIO_H
  10
  11 #include <asm/sn/types.h>
  12
  13 /*
  14  * pioaddr_t    - The kernel virtual address that a PIO can be done upon.
  15  *                Should probably be (volatile void*) but EVEREST would do PIO
  16  *                to long mostly, just cast for other sizes.
  17  */
  18
  19 typedef volatile unsigned long* pioaddr_t;
  20
  21 /*
  22  * iopaddr_t    - the physical io space relative address (e.g. VME A16S 0x0800).
  23  * iosapce_t    - specifies the io address space to be mapped/accessed.
  24  * piomap_t     - the handle returned by pio_alloc() and used with all the pio
  25  *                access functions.
  26  */
  27
  28
  29 typedef struct piomap {
  30         unsigned int    pio_bus;
  31         unsigned int    pio_adap;
  32         int             pio_flag;
  33         int             pio_reg;
  34         char            pio_name[7];    /* to identify the mapped device */
  35         struct piomap   *pio_next;      /* dlist to link active piomap's */
  36         struct piomap   *pio_prev;      /* for debug and error reporting */
  37         iopaddr_t       pio_iopmask;    /* valid iop address bit mask */
  38         iobush_t        pio_bushandle;  /* bus-level handle */
  39 } piomap_t;
  40
  41 #define pio_type        pio_iospace.ios_type
  42 #define pio_iopaddr     pio_iospace.ios_iopaddr
  43 #define pio_size        pio_iospace.ios_size
  44 #define pio_vaddr       pio_iospace.ios_vaddr
  45
  46 /* Macro to get/set PIO error function */
  47 #define pio_seterrf(p,f)        (p)->pio_errfunc = (f)
  48 #define pio_geterrf(p)          (p)->pio_errfunc
  49
  50
  51 /*
  52  * piomap_t type defines
  53  */
  54
  55 #define PIOMAP_NTYPES   7
  56
  57 #define PIOMAP_A16N     VME_A16NP
  58 #define PIOMAP_A16S     VME_A16S
  59 #define PIOMAP_A24N     VME_A24NP
  60 #define PIOMAP_A24S     VME_A24S
  61 #define PIOMAP_A32N     VME_A32NP
  62 #define PIOMAP_A32S     VME_A32S
  63 #define PIOMAP_A64      6
  64
  65 #define PIOMAP_EISA_IO  0
  66 #define PIOMAP_EISA_MEM 1
  67
  68 #define PIOMAP_PCI_IO   0
  69 #define PIOMAP_PCI_MEM  1
  70 #define PIOMAP_PCI_CFG  2
  71 #define PIOMAP_PCI_ID   3
  72
  73 /* IBUS piomap types */
  74 #define PIOMAP_FCI      0
  75
  76 /* dang gio piomap types */
  77
  78 #define PIOMAP_GIO32    0
  79 #define PIOMAP_GIO64    1
  80
  81 #define ET_MEM          0
  82 #define ET_IO           1
  83 #define LAN_RAM         2
  84 #define LAN_IO          3
  85
  86 #define PIOREG_NULL     (-1)
  87
  88 /* standard flags values for pio_map routines,
  89  * including {xtalk,pciio}_piomap calls.
  90  * NOTE: try to keep these in step with DMAMAP flags.
  91  */
  92 #define PIOMAP_UNFIXED  0x0
  93 #define PIOMAP_FIXED    0x1
  94 #define PIOMAP_NOSLEEP  0x2
  95 #define PIOMAP_INPLACE  0x4
  96
  97 #define PIOMAP_FLAGS    0x7
  98
  99 #endif  /* _ASM_IA64_SN_PIO_H */