sys/arch/sparc/include/pci_machdep.h

   1 /*      $NetBSD: pci_machdep.h,v 1.6 2006/03/04 02:56:21 uwe Exp $ */
   2
   3 /*
   4  * Copyright (c) 1999 Matthew R. Green
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #ifndef _SPARC_PCI_MACHDEP_H_
  30 #define _SPARC_PCI_MACHDEP_H_
  31
  32 /*
  33  * Machine-specific definitions for PCI autoconfiguration.
  34  */
  35
  36 /*
  37  * Types provided to machine-independent PCI code
  38  */
  39 typedef struct sparc_pci_chipset *pci_chipset_tag_t;
  40 typedef u_int pci_intr_handle_t;
  41 typedef uint64_t pcitag_t;
  42
  43
  44 /*
  45  * Forward declarations.
  46  */
  47 struct pci_attach_args;
  48
  49
  50 /*
  51  * sparc-specific PCI structure and type definitions.
  52  * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE.
  53  */
  54 struct sparc_pci_chipset {
  55         void            *cookie;        /* msiiep_softc, but sssh! */
  56 };
  57
  58 /*
  59  * The MI PCI code expects pcitag_t to be a scalar type.  But besides
  60  * the bus/device/function we need to store the OFW node as well.  We
  61  * can squeeze them into a uint64_t with a little help from some
  62  * macros.  And while we are at it mangle bus/device/function into a
  63  * form directly suitable for pci mode1 configuration address port.
  64  */
  65 #define PCITAG_CREATE(n,b,d,f)  \
  66         (((uint64_t)(n)<<32)|0x80000000U|((b)<<16)|((d)<<11)|((f)<<8))
  67
  68 #define PCITAG_NODE(t)          ((uint32_t)(((t)>>32)&0xffffffff))
  69 #define PCITAG_OFFSET(t)        ((uint32_t)((t)&0xffffffff))
  70 #define PCITAG_BUS(t)           ((PCITAG_OFFSET(t)>>16)&0xFF)
  71 #define PCITAG_DEV(t)           ((PCITAG_OFFSET(t)>>11)&0x1F)
  72 #define PCITAG_FUN(t)           ((PCITAG_OFFSET(t)>>8)&0x7)
  73
  74
  75 /*
  76  * Functions provided to machine-independent PCI code.
  77  */
  78 void            pci_attach_hook(struct device *, struct device *,
  79                                 struct pcibus_attach_args *);
  80 int             pci_bus_maxdevs(pci_chipset_tag_t, int);
  81 pcitag_t        pci_make_tag(pci_chipset_tag_t, int, int, int);
  82 void            pci_decompose_tag(pci_chipset_tag_t, pcitag_t,
  83                                   int *, int *, int *);
  84 pcireg_t        pci_conf_read(pci_chipset_tag_t, pcitag_t, int);
  85 void            pci_conf_write(pci_chipset_tag_t, pcitag_t, int, pcireg_t);
  86 int             pci_intr_map(struct pci_attach_args *, pci_intr_handle_t *);
  87 const char      *pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t);
  88 const struct evcnt *pci_intr_evcnt(pci_chipset_tag_t, pci_intr_handle_t);
  89 void            *pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t,
  90                                     int, int (*)(void *), void *);
  91 void            pci_intr_disestablish(pci_chipset_tag_t, void *);
  92
  93 #endif /* _SPARC_PCI_MACHDEP_H_ */