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pci_machdep.h revision 1.12 
      1 /* $NetBSD: pci_machdep.h,v 1.12 2002/05/15 19:23:56 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  * We want to contro both device & function probe order.
     36  */
     37 #define		__PCI_BUS_DEVORDER
     38 
     39 /*
     40  * Forward declarations.
     41  */
     42 struct pci_attach_args;
     43 
     44 /*
     45  * define some bits used to glue into the common PCI code.
     46  */
     47 
     48 typedef struct sparc_pci_chipset *pci_chipset_tag_t;
     49 typedef u_int pci_intr_handle_t;
     50 
     51 struct sparc_pci_chipset {
     52 	void			*cookie;	/* psycho_pbm, but sssh! */
     53 	int			rootnode;	/* PCI controller */
     54 	int			curnode;	/* Current OFW node */
     55 };
     56 
     57 /*
     58  * The stuuuuuuupid allegedly MI PCI code expects pcitag_t to be a
     59  * scalar type.  But we really need to store both the OFW node and
     60  * the bus/device/function info in it.  (We'd like to store more,
     61  * like all the ofw properties, but we don't need to.)  Luckily,
     62  * both are 32-bit values, so we can squeeze them into a u_int64_t
     63  * with a little help from some macros.
     64  */
     65 
     66 #define	PCITAG_NODE(x)		(int)(((x)>>32)&0xffffffff)
     67 #define	PCITAG_OFFSET(x)	((x)&0xffffffff)
     68 #define	PCITAG_BUS(t)		((PCITAG_OFFSET(t)>>16)&0xff)
     69 #define	PCITAG_DEV(t)		((PCITAG_OFFSET(t)>>11)&0x1f)
     70 #define	PCITAG_FUN(t)		((PCITAG_OFFSET(t)>>8)&0x7)
     71 #define	PCITAG_CREATE(n,b,d,f)	(((u_int64_t)(n)<<32)|((b)<<16)|((d)<<11)|((f)<<8))
     72 #define	PCITAG_SETNODE(t,n)	((t)&0xffffffff)|(((n)<<32)
     73 typedef u_int64_t pcitag_t;
     74 
     75 
     76 void		pci_attach_hook(struct device *, struct device *,
     77 				     struct pcibus_attach_args *);
     78 #ifdef __PCI_BUS_DEVORDER
     79 int		pci_bus_devorder(pci_chipset_tag_t, int, char *);
     80 #endif
     81 int		pci_bus_maxdevs(pci_chipset_tag_t, int);
     82 pcitag_t	pci_make_tag(pci_chipset_tag_t, int, int, int);
     83 void		pci_decompose_tag(pci_chipset_tag_t, pcitag_t, int *, int *,
     84 		    int *);
     85 pcireg_t	pci_conf_read(pci_chipset_tag_t, pcitag_t, int);
     86 void		pci_conf_write(pci_chipset_tag_t, pcitag_t, int,
     87 				    pcireg_t);
     88 int		pci_intr_map(struct pci_attach_args *, pci_intr_handle_t *);
     89 const char	*pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t);
     90 const struct evcnt *pci_intr_evcnt(pci_chipset_tag_t, pci_intr_handle_t);
     91 void		*pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t,
     92 					 int, int (*)(void *), void *);
     93 void		pci_intr_disestablish(pci_chipset_tag_t, void *);
     94 
     95 #define	pci_enumerate_bus(sc, m, p)					\
     96 	pci_enumerate_bus_generic((sc), (m), (p))
     97 
     98 #endif /* _MACHINE_PCI_MACHDEP_H_ */
     99