include/asm-ia64/sn/xtalk/xtalk_private.h

   1 /* $Id$
   2  *
   3  * This file is subject to the terms and conditions of the GNU General Public
   4  * License.  See the file "COPYING" in the main directory of this archive
   5  * for more details.
   6  *
   7  * Copyright (C) 1992-1997, 2000-2002 Silicon Graphics, Inc.  All Rights Reserved.
   8  */
   9 #ifndef _ASM_SN_XTALK_XTALK_PRIVATE_H
  10 #define _ASM_SN_XTALK_XTALK_PRIVATE_H
  11
  12 #include <asm/sn/ioerror.h>        /* for error function and arg types */
  13 #include <linux/devfs_fs_kernel.h>
  14 #include <asm/sn/xtalk/xwidget.h>
  15 #include <asm/sn/xtalk/xtalk.h>
  16
  17 /*
  18  * xtalk_private.h -- private definitions for xtalk
  19  * crosstalk drivers should NOT include this file.
  20  */
  21
  22 /*
  23  * All Crosstalk providers set up PIO using this information.
  24  */
  25 struct xtalk_piomap_s {
  26     devfs_handle_t            xp_dev;   /* a requestor of this mapping */
  27     xwidgetnum_t            xp_target;  /* target (node's widget number) */
  28     iopaddr_t               xp_xtalk_addr;      /* which crosstalk addr is mapped */
  29     size_t                  xp_mapsz;   /* size of this mapping */
  30     caddr_t                 xp_kvaddr;  /* kernel virtual address to use */
  31 };
  32
  33 /*
  34  * All Crosstalk providers set up DMA using this information.
  35  */
  36 struct xtalk_dmamap_s {
  37     devfs_handle_t            xd_dev;   /* a requestor of this mapping */
  38     xwidgetnum_t            xd_target;  /* target (node's widget number) */
  39 };
  40
  41 /*
  42  * All Crosstalk providers set up interrupts using this information.
  43  */
  44 struct xtalk_intr_s {
  45     devfs_handle_t            xi_dev;   /* requestor of this intr */
  46     xwidgetnum_t            xi_target;  /* master's widget number */
  47     xtalk_intr_vector_t     xi_vector;  /* 8-bit interrupt vector */
  48     iopaddr_t               xi_addr;    /* xtalk address to generate intr */
  49     void                   *xi_sfarg;   /* argument for setfunc */
  50     xtalk_intr_setfunc_t    xi_setfunc;         /* device's setfunc routine */
  51 };
  52
  53 /*
  54  * Xtalk interrupt handler structure access functions
  55  */
  56 #define xtalk_intr_arg(xt)      ((xt)->xi_sfarg)
  57
  58 #define xwidget_hwid_is_sn0_xswitch(_hwid)      \
  59                 (((_hwid)->part_num == XBOW_WIDGET_PART_NUM ) &&        \
  60                  ((_hwid)->mfg_num == XBOW_WIDGET_MFGR_NUM ))
  61
  62 #define xwidget_hwid_is_sn1_xswitch(_hwid)      \
  63                 (((_hwid)->part_num == XXBOW_WIDGET_PART_NUM ||         \
  64                   (_hwid)->part_num == PXBOW_WIDGET_PART_NUM) &&        \
  65                  ((_hwid)->mfg_num == XXBOW_WIDGET_MFGR_NUM ))
  66
  67 #define xwidget_hwid_is_xswitch(_hwid)  \
  68                         xwidget_hwid_is_sn1_xswitch(_hwid)
  69
  70 /* common iograph info for all widgets,
  71  * stashed in FASTINFO of widget connection points.
  72  */
  73 struct xwidget_info_s {
  74     char                   *w_fingerprint;
  75     devfs_handle_t            w_vertex; /* back pointer to vertex */
  76     xwidgetnum_t            w_id;       /* widget id */
  77     struct xwidget_hwid_s   w_hwid;     /* hardware identification (part/rev/mfg) */
  78     devfs_handle_t            w_master; /* CACHED widget's master */
  79     xwidgetnum_t            w_masterid;         /* CACHED widget's master's widgetnum */
  80     error_handler_f        *w_efunc;    /* error handling function */
  81     error_handler_arg_t     w_einfo;    /* first parameter for efunc */
  82     char                   *w_name;     /* canonical hwgraph name */
  83 };
  84
  85 extern char             widget_info_fingerprint[];
  86
  87 #endif                          /* _ASM_SN_XTALK_XTALK_PRIVATE_H */