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pcivar.h revision 1.13 
      1 /*	$NetBSD: pcivar.h,v 1.13 1996/03/14 02:35:33 cgd Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1994 Charles Hannum.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *	This product includes software developed by Charles Hannum.
     17  * 4. The name of the author may not be used to endorse or promote products
     18  *    derived from this software without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _DEV_PCI_PCIVAR_H_
     33 #define	_DEV_PCI_PCIVAR_H_
     34 
     35 /*
     36  * Definitions for PCI autoconfiguration.
     37  *
     38  * This file describes types and functions which are used for PCI
     39  * configuration.  Some of this information is machine-specific, and is
     40  * separated into pci_machdep.h.
     41  */
     42 
     43 #include <machine/bus.h>
     44 
     45 #if (alpha + i386 != 1)
     46 ERROR: COMPILING FOR UNSUPPORTED MACHINE, OR MORE THAN ONE.
     47 #endif
     48 
     49 #if alpha
     50 #include <alpha/pci/pci_machdep.h>
     51 #endif
     52 
     53 #if i386
     54 #include <i386/pci/pci_machdep.h>
     55 #endif
     56 
     57 /*
     58  * The maximum number of devices on a PCI bus is 32.  However, some
     59  * PCI chipsets (e.g. chipsets that implement 'Configuration Mechanism #2'
     60  * on the i386) can't deal with that many, so let pci_machdep.h override it.
     61  */
     62 #ifndef PCI_MAX_DEVICE_NUMBER
     63 #define	PCI_MAX_DEVICE_NUMBER	32
     64 #endif
     65 
     66 /*
     67  * PCI bus attach arguments.
     68  */
     69 struct pcibus_attach_args {
     70 	char		*pba_busname;	/* XXX should be common */
     71 	bus_chipset_tag_t pba_bc;	/* XXX should be common */
     72 
     73 	int		pba_bus;	/* PCI bus number */
     74 };
     75 
     76 /*
     77  * PCI device attach arguments.
     78  */
     79 struct pci_attach_args {
     80 	bus_chipset_tag_t pa_bc;	/* bus chipset tag */
     81 
     82 	int		pa_device;
     83 	int		pa_function;
     84 	pcitag_t	pa_tag;
     85 	pcireg_t	pa_id, pa_class;
     86 };
     87 
     88 /*
     89  * Locators devices that attach to 'pcibus', as specified to config.
     90  */
     91 #define	pcibuscf_bus		cf_loc[0]
     92 #define	PCIBUS_UNK_BUS		-1		/* wildcarded 'bus' */
     93 
     94 /*
     95  * Locators for PCI devices, as specified to config.
     96  */
     97 #define	pcicf_dev		cf_loc[0]
     98 #define	PCI_UNK_DEV		-1		/* wildcarded 'dev' */
     99 
    100 #define	pcicf_function		cf_loc[1]
    101 #define	PCI_UNK_FUNCTION	-1		/* wildcarded 'function' */
    102 
    103 pcireg_t pci_conf_read __P((pcitag_t, int));
    104 void	 pci_conf_write __P((pcitag_t, int, pcireg_t));
    105 void	 pci_devinfo __P((pcireg_t, pcireg_t, int, char *));
    106 pcitag_t pci_make_tag __P((int, int, int));
    107 void	*pci_map_int __P((pcitag_t, int, int (*)(void *), void *));
    108 int	 pci_map_mem __P((pcitag_t, int, vm_offset_t *, vm_offset_t *));
    109 
    110 #endif /* _DEV_PCI_PCIVAR_H_ */
    111