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pci_machdep.h revision 1.5 
      1 /*	$NetBSD: pci_machdep.h,v 1.5 2011/04/04 20:37:52 dyoung Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1996 Christopher G. Demetriou.  All rights reserved.
      5  * Copyright (c) 1994 Charles M. Hannum.  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  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by Charles M. Hannum.
     18  * 4. The name of the author may not be used to endorse or promote products
     19  *    derived from this software without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 /*
     34  * Machine-specific definitions for PCI autoconfiguration.
     35  */
     36 
     37 #define __HAVE_PCI_CONF_HOOK
     38 
     39 /*
     40  * Forward declarations.
     41  */
     42 struct pci_attach_args;
     43 
     44 /*
     45  * macppc-specific PCI structure and type definitions.
     46  * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE.
     47  *
     48  * Configuration tag; created from a {bus,device,function} triplet by
     49  * pci_make_tag(), and passed to pci_conf_read() and pci_conf_write().
     50  * We could instead always pass the {bus,device,function} triplet to
     51  * the read and write routines, but this would cause extra overhead.
     52  */
     53 
     54 /*
     55  * Types provided to machine-independent PCI code
     56  */
     57 typedef struct ibm4xx_pci_chipset *pci_chipset_tag_t;
     58 typedef int pcitag_t;
     59 typedef int pci_intr_handle_t;
     60 
     61 struct ibm4xx_pci_chipset {
     62 	int rootnode;		/* PCI controller */
     63 	struct extent *ioext;	/* PCI I/O extent */
     64 	struct extent *memext;	/* PCI memory extent */
     65 };
     66 
     67 /*
     68  * Functions provided to machine-independent PCI code.
     69  */
     70 void		pci_attach_hook(struct device *, struct device *,
     71 		    struct pcibus_attach_args *);
     72 int		pci_bus_maxdevs(pci_chipset_tag_t, int);
     73 pcitag_t	pci_make_tag(pci_chipset_tag_t, int, int, int);
     74 void		pci_decompose_tag(pci_chipset_tag_t, pcitag_t,
     75 		    int *, int *, int *);
     76 pcireg_t	pci_conf_read(pci_chipset_tag_t, pcitag_t, int);
     77 void		pci_conf_write(pci_chipset_tag_t, pcitag_t, int,
     78 		    pcireg_t);
     79 int		pci_intr_map(const struct pci_attach_args *,
     80 		    pci_intr_handle_t *);
     81 const char	*pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t);
     82 const struct evcnt *pci_intr_evcnt(pci_chipset_tag_t, pci_intr_handle_t);
     83 void		*pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t,
     84 		    int, int (*)(void *), void *);
     85 void		pci_intr_disestablish(pci_chipset_tag_t, void *);
     86 int		pci_conf_hook(pci_chipset_tag_t, int, int, int, pcireg_t);
     87 
     88 void		pci_machdep_init(void);
     89 
     90 
     91 /*
     92  * Internal functions.
     93  */
     94 void		pci_init(int);
     95