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pci_machdep.h revision 1.11 
      1 /*	$NetBSD: pci_machdep.h,v 1.11 2010/02/24 21:25:51 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 #ifndef _X86_PCI_MACHDEP_H_
     34 #define _X86_PCI_MACHDEP_H_
     35 
     36 /*
     37  * Machine-specific definitions for PCI autoconfiguration.
     38  */
     39 #define	__HAVE_PCIIDE_MACHDEP_COMPAT_INTR_ESTABLISH
     40 
     41 /*
     42  * i386-specific PCI structure and type definitions.
     43  * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE.
     44  *
     45  * Configuration tag; created from a {bus,device,function} triplet by
     46  * pci_make_tag(), and passed to pci_conf_read() and pci_conf_write().
     47  * We could instead always pass the {bus,device,function} triplet to
     48  * the read and write routines, but this would cause extra overhead.
     49  *
     50  * Mode 2 is historical and deprecated by the Revision 2.0 specification.
     51  */
     52 union x86_pci_tag_u {
     53 	uint32_t mode1;
     54 	struct {
     55 		uint16_t port;
     56 		uint8_t enable;
     57 		uint8_t forward;
     58 	} mode2;
     59 };
     60 
     61 extern struct x86_bus_dma_tag pci_bus_dma_tag;
     62 #ifdef _LP64
     63 extern struct x86_bus_dma_tag pci_bus_dma64_tag;
     64 #endif
     65 
     66 struct {
     67         int dummy;
     68 } pci_chipset_tag;
     69 
     70 /*
     71  * Types provided to machine-independent PCI code
     72  */
     73 typedef struct pci_chipset_tag *pci_chipset_tag_t;
     74 typedef union x86_pci_tag_u pcitag_t;
     75 typedef int pci_intr_handle_t;
     76 
     77 /*
     78  * i386-specific PCI variables and functions.
     79  * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE.
     80  */
     81 void		pci_mode_set(int);
     82 int		pci_mode_detect(void);
     83 int		pci_bus_flags(void);
     84 struct		pci_attach_args;
     85 
     86 /*
     87  * Functions provided to machine-independent PCI code.
     88  */
     89 void		pci_attach_hook(struct device *, struct device *,
     90 		    struct pcibus_attach_args *);
     91 int		pci_bus_maxdevs(pci_chipset_tag_t, int);
     92 pcitag_t	pci_make_tag(pci_chipset_tag_t, int, int, int);
     93 void		pci_decompose_tag(pci_chipset_tag_t, pcitag_t,
     94 		    int *, int *, int *);
     95 pcireg_t	pci_conf_read(pci_chipset_tag_t, pcitag_t, int);
     96 void		pci_conf_write(pci_chipset_tag_t, pcitag_t, int,
     97 		    pcireg_t);
     98 int		pci_intr_map(struct pci_attach_args *, pci_intr_handle_t *);
     99 const char	*pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t);
    100 const struct evcnt *pci_intr_evcnt(pci_chipset_tag_t, pci_intr_handle_t);
    101 void		*pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t,
    102 		    int, int (*)(void *), void *);
    103 void		pci_intr_disestablish(pci_chipset_tag_t, void *);
    104 
    105 
    106 /*
    107  * ALL OF THE FOLLOWING ARE MACHINE-DEPENDENT, AND SHOULD NOT BE USED
    108  * BY PORTABLE CODE.
    109  */
    110 
    111 /* Extract Bus Number for a host bridge or -1 if unknown. */
    112 int		pchb_get_bus_number(pci_chipset_tag_t, pcitag_t);
    113 
    114 /*
    115  * Section 6.2.4, `Miscellaneous Functions' of the PCI Specification,
    116  * says that 255 means `unknown' or `no connection' to the interrupt
    117  * controller on a PC.
    118  */
    119 #define	X86_PCI_INTERRUPT_LINE_NO_CONNECTION	0xff
    120 
    121 void pci_device_foreach(pci_chipset_tag_t, int,
    122 			void (*)(pci_chipset_tag_t, pcitag_t, void*),
    123 			void *);
    124 
    125 void pci_device_foreach_min(pci_chipset_tag_t, int, int,
    126 			    void (*)(pci_chipset_tag_t, pcitag_t, void*),
    127 			    void *);
    128 
    129 void pci_bridge_foreach(pci_chipset_tag_t, int, int,
    130 	void (*) (pci_chipset_tag_t, pcitag_t, void *), void *);
    131 
    132 
    133 #endif /* _X86_PCI_MACHDEP_H_ */
    134