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pci_machdep.h revision 1.19 
      1 /* $NetBSD: pci_machdep.h,v 1.19 2008/05/29 14:51:26 mrg 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  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #ifndef _MACHINE_PCI_MACHDEP_H_
     30 #define _MACHINE_PCI_MACHDEP_H_
     31 
     32 /*
     33  * Forward declarations.
     34  */
     35 struct pci_attach_args;
     36 
     37 /*
     38  * define some bits used to glue into the common PCI code.
     39  */
     40 
     41 typedef struct sparc_pci_chipset *pci_chipset_tag_t;
     42 typedef u_int pci_intr_handle_t;
     43 
     44 struct sparc_pci_chipset {
     45 	void			*cookie;	/* psycho_pbm, but sssh! */
     46 	int			rootnode;	/* PCI controller */
     47 };
     48 
     49 /*
     50  * The stuuuuuuupid allegedly MI PCI code expects pcitag_t to be a
     51  * scalar type.  But we really need to store both the OFW node and
     52  * the bus/device/function info in it.  (We'd like to store more,
     53  * like all the ofw properties, but we don't need to.)  Luckily,
     54  * both are 32-bit values, so we can squeeze them into a uint64_t
     55  * with a little help from some macros.
     56  */
     57 
     58 #define	PCITAG_NODE(x)		(int)(((x)>>32)&0xffffffff)
     59 #define	PCITAG_OFFSET(x)	((x)&0xffffffff)
     60 #define	PCITAG_BUS(t)		((PCITAG_OFFSET(t)>>16)&0xff)
     61 #define	PCITAG_DEV(t)		((PCITAG_OFFSET(t)>>11)&0x1f)
     62 #define	PCITAG_FUN(t)		((PCITAG_OFFSET(t)>>8)&0x7)
     63 #define	PCITAG_CREATE(n,b,d,f)	(((uint64_t)(n)<<32)|((b)<<16)|((d)<<11)|((f)<<8))
     64 #define	PCITAG_SETNODE(t,n)	((t)&0xffffffff)|(((n)<<32)
     65 typedef uint64_t pcitag_t;
     66 
     67 
     68 void		pci_attach_hook(struct device *, struct device *,
     69 				     struct pcibus_attach_args *);
     70 int		pci_bus_maxdevs(pci_chipset_tag_t, int);
     71 pcitag_t	pci_make_tag(pci_chipset_tag_t, int, int, int);
     72 void		pci_decompose_tag(pci_chipset_tag_t, pcitag_t, int *, int *,
     73 		    int *);
     74 pcireg_t	pci_conf_read(pci_chipset_tag_t, pcitag_t, int);
     75 void		pci_conf_write(pci_chipset_tag_t, pcitag_t, int,
     76 				    pcireg_t);
     77 int		pci_intr_map(struct pci_attach_args *, pci_intr_handle_t *);
     78 const char	*pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t);
     79 const struct evcnt *pci_intr_evcnt(pci_chipset_tag_t, pci_intr_handle_t);
     80 void		*pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t,
     81 					 int, int (*)(void *), void *);
     82 void		pci_intr_disestablish(pci_chipset_tag_t, void *);
     83 
     84 int		sparc64_pci_enumerate_bus(struct pci_softc *, const int *,
     85 		    int (*)(struct pci_attach_args *),
     86 		    struct pci_attach_args *);
     87 #define PCI_MACHDEP_ENUMERATE_BUS sparc64_pci_enumerate_bus
     88 
     89 #endif /* _MACHINE_PCI_MACHDEP_H_ */
     90