sys/arch/i386/pci/pcibios.h

   1 /*      $NetBSD: pcibios.h,v 1.11 2006/12/10 04:17:20 uwe Exp $ */
   2
   3 /*
   4  * Copyright (c) 1999, by UCHIYAMA Yasushi
   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. The name of the developer may NOT be used to endorse or promote products
  13  *    derived from this software without specific prior written permission.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  */
  27
  28 /*
  29  * Data structure definitions for the PCI BIOS interface.
  30  */
  31
  32 /*
  33  * PCI BIOS return codes.
  34  */
  35 #define PCIBIOS_SUCCESS                 0x00
  36 #define PCIBIOS_SERVICE_NOT_PRESENT     0x80
  37 #define PCIBIOS_FUNCTION_NOT_SUPPORTED  0x81
  38 #define PCIBIOS_BAD_VENDOR_ID           0x83
  39 #define PCIBIOS_DEVICE_NOT_FOUND        0x86
  40 #define PCIBIOS_BAD_REGISTER_NUMBER     0x87
  41 #define PCIBIOS_SET_FAILED              0x88
  42 #define PCIBIOS_BUFFER_TOO_SMALL        0x89
  43
  44 /*
  45  * PCI IRQ Routing Table definitions.
  46  */
  47
  48 /*
  49  * Slot entry (per PCI 2.1)
  50  */
  51 struct pcibios_linkmap {
  52         uint8_t         link;
  53         uint16_t        bitmap;
  54 } __packed;
  55
  56 struct pcibios_intr_routing {
  57         uint8_t         bus;
  58         uint8_t         device;
  59         struct pcibios_linkmap linkmap[4];      /* INT[A:D]# */
  60         uint8_t         slot;
  61         uint8_t         reserved;
  62 } __packed;
  63
  64 /*
  65  * $PIR header.  Reference:
  66  *
  67  *      http://www.microsoft.com/whdc/hwdev/archive/BUSBIOS/pciirq.mspx
  68  */
  69 struct pcibios_pir_header {
  70         uint32_t        signature;              /* $PIR */
  71         uint16_t        version;
  72         uint16_t        tablesize;
  73         uint8_t         router_bus;
  74         uint8_t         router_devfunc;
  75         uint16_t        exclusive_irq;
  76         uint32_t        compat_router;          /* PCI vendor/product */
  77         uint32_t        miniport;
  78         uint8_t         reserved[11];
  79         uint8_t         checksum;
  80 } __packed;
  81
  82 #define PIR_DEVFUNC_DEVICE(devfunc)     (((devfunc) >> 3) & 0x1f)
  83 #define PIR_DEVFUNC_FUNCTION(devfunc)   ((devfunc) & 7)
  84
  85 void    pcibios_init(void);
  86
  87 extern struct pcibios_pir_header pcibios_pir_header;
  88 extern struct pcibios_intr_routing *pcibios_pir_table;
  89 extern int pcibios_pir_table_nentries;
  90 extern int pcibios_max_bus;
  91
  92 #ifdef PCIBIOSVERBOSE
  93 extern int pcibiosverbose;
  94
  95 #define PCIBIOS_PRINTV(arg) \
  96         do { \
  97                 if (pcibiosverbose) \
  98                         aprint_normal arg; \
  99         } while (0)
 100 #define PCIBIOS_PRINTVN(n, arg) \
 101         do { \
 102                  if (pcibiosverbose > (n)) \
 103                         aprint_normal arg; \
 104         } while (0)
 105 #else
 106 #define PCIBIOS_PRINTV(arg)
 107 #define PCIBIOS_PRINTVN(n, arg)
 108 #endif