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      1 /*	$NetBSD: pci_machdep.h,v 1.12 2016/07/07 06:55:38 msaitoh 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 _SPARC_PCI_MACHDEP_H_
     30 #define _SPARC_PCI_MACHDEP_H_
     31 
     32 /*
     33  * Machine-specific definitions for PCI autoconfiguration.
     34  */
     35 
     36 /*
     37  * Types provided to machine-independent PCI code
     38  */
     39 typedef struct sparc_pci_chipset *pci_chipset_tag_t;
     40 typedef u_int pci_intr_handle_t;
     41 typedef uint64_t pcitag_t;
     42 
     43 
     44 /*
     45  * Forward declarations.
     46  */
     47 struct pci_attach_args;
     48 
     49 
     50 /*
     51  * sparc-specific PCI structure and type definitions.
     52  * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE.
     53  */
     54 struct sparc_pci_chipset {
     55 	void		*cookie;	/* msiiep_softc, but sssh! */
     56 };
     57 
     58 #define IS_PCI_BRIDGE(class) \
     59 	(((class >> 16) & 0xff) == PCI_CLASS_BRIDGE && \
     60 	    ((class >> 8) & 0xff) == PCI_SUBCLASS_BRIDGE_PCI)
     61 
     62 /*
     63  * The MI PCI code expects pcitag_t to be a scalar type.  But besides
     64  * the bus/device/function we need to store the OFW node as well.  We
     65  * can squeeze them into a uint64_t with a little help from some
     66  * macros.  And while we are at it mangle bus/device/function into a
     67  * form directly suitable for pci mode1 configuration address port.
     68  */
     69 #define	PCITAG_CREATE(n,b,d,f)	\
     70 	(((uint64_t)(n)<<32)|0x80000000U|((b)<<16)|((d)<<11)|((f)<<8)|(b?1:0))
     71 
     72 #define	PCITAG_NODE(t)		((uint32_t)(((t)>>32)&0xffffffff))
     73 #define	PCITAG_OFFSET(t)	((uint32_t)((t)&0xffffffff))
     74 #define PCITAG_BUS(t)		((PCITAG_OFFSET(t)>>16)&0xFF)
     75 #define PCITAG_DEV(t)		((PCITAG_OFFSET(t)>>11)&0x1F)
     76 #define PCITAG_FUN(t)		((PCITAG_OFFSET(t)>>8)&0x7)
     77 
     78 
     79 /*
     80  * Functions provided to machine-independent PCI code.
     81  */
     82 void		pci_attach_hook(device_t, device_t,
     83 				struct pcibus_attach_args *);
     84 int		pci_bus_maxdevs(pci_chipset_tag_t, int);
     85 pcitag_t	pci_make_tag(pci_chipset_tag_t, int, int, int);
     86 void		pci_decompose_tag(pci_chipset_tag_t, pcitag_t,
     87 				  int *, int *, int *);
     88 pcireg_t	pci_conf_read(pci_chipset_tag_t, pcitag_t, int);
     89 void		pci_conf_write(pci_chipset_tag_t, pcitag_t, int, pcireg_t);
     90 int		pci_intr_map(const struct pci_attach_args *,
     91 		             pci_intr_handle_t *);
     92 const char	*pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t,
     93 				 char *, size_t);
     94 const struct evcnt *pci_intr_evcnt(pci_chipset_tag_t, pci_intr_handle_t);
     95 void		*pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t,
     96 				    int, int (*)(void *), void *);
     97 void		pci_intr_disestablish(pci_chipset_tag_t, void *);
     98 
     99 #endif /* _SPARC_PCI_MACHDEP_H_ */
    100