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pci_machdep.h revision 1.13 
      1 /* $NetBSD: pci_machdep.h,v 1.13 2002/05/16 01:01:47 thorpej 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  * 3. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     23  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     24  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     26  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     28  * SUCH DAMAGE.
     29  */
     30 
     31 #ifndef _MACHINE_PCI_MACHDEP_H_
     32 #define _MACHINE_PCI_MACHDEP_H_
     33 
     34 /*
     35  * Forward declarations.
     36  */
     37 struct pci_attach_args;
     38 
     39 /*
     40  * define some bits used to glue into the common PCI code.
     41  */
     42 
     43 typedef struct sparc_pci_chipset *pci_chipset_tag_t;
     44 typedef u_int pci_intr_handle_t;
     45 
     46 struct sparc_pci_chipset {
     47 	void			*cookie;	/* psycho_pbm, but sssh! */
     48 	int			rootnode;	/* PCI controller */
     49 	int			curnode;	/* Current OFW node */
     50 };
     51 
     52 /*
     53  * The stuuuuuuupid allegedly MI PCI code expects pcitag_t to be a
     54  * scalar type.  But we really need to store both the OFW node and
     55  * the bus/device/function info in it.  (We'd like to store more,
     56  * like all the ofw properties, but we don't need to.)  Luckily,
     57  * both are 32-bit values, so we can squeeze them into a u_int64_t
     58  * with a little help from some macros.
     59  */
     60 
     61 #define	PCITAG_NODE(x)		(int)(((x)>>32)&0xffffffff)
     62 #define	PCITAG_OFFSET(x)	((x)&0xffffffff)
     63 #define	PCITAG_BUS(t)		((PCITAG_OFFSET(t)>>16)&0xff)
     64 #define	PCITAG_DEV(t)		((PCITAG_OFFSET(t)>>11)&0x1f)
     65 #define	PCITAG_FUN(t)		((PCITAG_OFFSET(t)>>8)&0x7)
     66 #define	PCITAG_CREATE(n,b,d,f)	(((u_int64_t)(n)<<32)|((b)<<16)|((d)<<11)|((f)<<8))
     67 #define	PCITAG_SETNODE(t,n)	((t)&0xffffffff)|(((n)<<32)
     68 typedef u_int64_t pcitag_t;
     69 
     70 
     71 void		pci_attach_hook(struct device *, struct device *,
     72 				     struct pcibus_attach_args *);
     73 int		pci_bus_maxdevs(pci_chipset_tag_t, int);
     74 pcitag_t	pci_make_tag(pci_chipset_tag_t, int, int, int);
     75 void		pci_decompose_tag(pci_chipset_tag_t, pcitag_t, int *, int *,
     76 		    int *);
     77 pcireg_t	pci_conf_read(pci_chipset_tag_t, pcitag_t, int);
     78 void		pci_conf_write(pci_chipset_tag_t, pcitag_t, int,
     79 				    pcireg_t);
     80 int		pci_intr_map(struct pci_attach_args *, 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 
     87 int		pci_enumerate_bus(struct pci_softc *,
     88 		    int (*match)(struct pci_attach_args *),
     89 		    struct pci_attach_args *);
     90 
     91 #endif /* _MACHINE_PCI_MACHDEP_H_ */
     92