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pci_machdep.h revision 1.7.4.1
      1  1.7.4.1    yamt /*	$NetBSD: pci_machdep.h,v 1.7.4.1 2009/05/04 08:12:09 yamt Exp $	*/
      2      1.1    fvdl 
      3      1.1    fvdl /*
      4      1.1    fvdl  * Copyright (c) 1996 Christopher G. Demetriou.  All rights reserved.
      5      1.1    fvdl  * Copyright (c) 1994 Charles M. Hannum.  All rights reserved.
      6      1.1    fvdl  *
      7      1.1    fvdl  * Redistribution and use in source and binary forms, with or without
      8      1.1    fvdl  * modification, are permitted provided that the following conditions
      9      1.1    fvdl  * are met:
     10      1.1    fvdl  * 1. Redistributions of source code must retain the above copyright
     11      1.1    fvdl  *    notice, this list of conditions and the following disclaimer.
     12      1.1    fvdl  * 2. Redistributions in binary form must reproduce the above copyright
     13      1.1    fvdl  *    notice, this list of conditions and the following disclaimer in the
     14      1.1    fvdl  *    documentation and/or other materials provided with the distribution.
     15      1.1    fvdl  * 3. All advertising materials mentioning features or use of this software
     16      1.1    fvdl  *    must display the following acknowledgement:
     17      1.1    fvdl  *	This product includes software developed by Charles M. Hannum.
     18      1.1    fvdl  * 4. The name of the author may not be used to endorse or promote products
     19      1.1    fvdl  *    derived from this software without specific prior written permission.
     20      1.1    fvdl  *
     21      1.1    fvdl  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22      1.1    fvdl  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23      1.1    fvdl  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24      1.1    fvdl  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25      1.1    fvdl  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26      1.1    fvdl  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27      1.1    fvdl  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28      1.1    fvdl  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29      1.1    fvdl  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30      1.1    fvdl  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31      1.1    fvdl  */
     32      1.1    fvdl 
     33      1.5    yamt #ifndef _X86_PCI_MACHDEP_H_
     34      1.5    yamt #define _X86_PCI_MACHDEP_H_
     35      1.3    fvdl 
     36      1.1    fvdl /*
     37      1.1    fvdl  * Machine-specific definitions for PCI autoconfiguration.
     38      1.1    fvdl  */
     39      1.1    fvdl #define	__HAVE_PCIIDE_MACHDEP_COMPAT_INTR_ESTABLISH
     40      1.1    fvdl 
     41      1.1    fvdl /*
     42      1.1    fvdl  * Many i386 PCI systems only work properly with I/O mapped space, in
     43      1.1    fvdl  * particular, buses behind PCI-PCI bridges may not have memory
     44      1.1    fvdl  * space mapped at all.  For this reason, tell drivers that have
     45      1.1    fvdl  * a choice that we "prefer" I/O space.
     46      1.1    fvdl  */
     47      1.1    fvdl #define	PCI_PREFER_IOSPACE
     48      1.1    fvdl 
     49      1.1    fvdl /*
     50      1.1    fvdl  * i386-specific PCI structure and type definitions.
     51      1.1    fvdl  * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE.
     52      1.1    fvdl  *
     53      1.1    fvdl  * Configuration tag; created from a {bus,device,function} triplet by
     54      1.1    fvdl  * pci_make_tag(), and passed to pci_conf_read() and pci_conf_write().
     55      1.1    fvdl  * We could instead always pass the {bus,device,function} triplet to
     56      1.1    fvdl  * the read and write routines, but this would cause extra overhead.
     57      1.1    fvdl  *
     58      1.1    fvdl  * Mode 2 is historical and deprecated by the Revision 2.0 specification.
     59      1.1    fvdl  */
     60      1.1    fvdl union x86_pci_tag_u {
     61      1.7  cegger 	uint32_t mode1;
     62      1.1    fvdl 	struct {
     63      1.7  cegger 		uint16_t port;
     64      1.7  cegger 		uint8_t enable;
     65      1.7  cegger 		uint8_t forward;
     66      1.1    fvdl 	} mode2;
     67      1.1    fvdl };
     68      1.1    fvdl 
     69      1.1    fvdl extern struct x86_bus_dma_tag pci_bus_dma_tag;
     70      1.2    fvdl #ifdef _LP64
     71      1.2    fvdl extern struct x86_bus_dma_tag pci_bus_dma64_tag;
     72      1.2    fvdl #endif
     73      1.1    fvdl 
     74      1.1    fvdl /*
     75      1.1    fvdl  * Types provided to machine-independent PCI code
     76      1.1    fvdl  */
     77      1.1    fvdl typedef void *pci_chipset_tag_t;
     78      1.1    fvdl typedef union x86_pci_tag_u pcitag_t;
     79      1.1    fvdl typedef int pci_intr_handle_t;
     80      1.1    fvdl 
     81      1.1    fvdl /*
     82      1.1    fvdl  * i386-specific PCI variables and functions.
     83      1.1    fvdl  * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE.
     84      1.1    fvdl  */
     85      1.1    fvdl extern int pci_mode;
     86      1.1    fvdl int		pci_mode_detect(void);
     87      1.1    fvdl int		pci_bus_flags(void);
     88      1.1    fvdl struct		pci_attach_args;
     89      1.1    fvdl 
     90      1.1    fvdl /*
     91      1.1    fvdl  * Functions provided to machine-independent PCI code.
     92      1.1    fvdl  */
     93      1.1    fvdl void		pci_attach_hook(struct device *, struct device *,
     94      1.1    fvdl 		    struct pcibus_attach_args *);
     95      1.1    fvdl int		pci_bus_maxdevs(pci_chipset_tag_t, int);
     96      1.1    fvdl pcitag_t	pci_make_tag(pci_chipset_tag_t, int, int, int);
     97      1.1    fvdl void		pci_decompose_tag(pci_chipset_tag_t, pcitag_t,
     98      1.1    fvdl 		    int *, int *, int *);
     99      1.1    fvdl pcireg_t	pci_conf_read(pci_chipset_tag_t, pcitag_t, int);
    100      1.1    fvdl void		pci_conf_write(pci_chipset_tag_t, pcitag_t, int,
    101      1.1    fvdl 		    pcireg_t);
    102      1.1    fvdl int		pci_intr_map(struct pci_attach_args *, pci_intr_handle_t *);
    103      1.1    fvdl const char	*pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t);
    104      1.1    fvdl const struct evcnt *pci_intr_evcnt(pci_chipset_tag_t, pci_intr_handle_t);
    105      1.1    fvdl void		*pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t,
    106      1.1    fvdl 		    int, int (*)(void *), void *);
    107      1.1    fvdl void		pci_intr_disestablish(pci_chipset_tag_t, void *);
    108      1.1    fvdl 
    109      1.1    fvdl 
    110      1.1    fvdl /*
    111      1.1    fvdl  * ALL OF THE FOLLOWING ARE MACHINE-DEPENDENT, AND SHOULD NOT BE USED
    112      1.1    fvdl  * BY PORTABLE CODE.
    113      1.1    fvdl  */
    114      1.1    fvdl 
    115  1.7.4.1    yamt /* Extract Bus Number for a host bridge or -1 if unknown. */
    116  1.7.4.1    yamt int		pchb_get_bus_number(pci_chipset_tag_t, pcitag_t);
    117  1.7.4.1    yamt 
    118      1.1    fvdl /*
    119      1.1    fvdl  * Section 6.2.4, `Miscellaneous Functions' of the PCI Specification,
    120      1.1    fvdl  * says that 255 means `unknown' or `no connection' to the interrupt
    121      1.1    fvdl  * controller on a PC.
    122      1.1    fvdl  */
    123      1.1    fvdl #define	X86_PCI_INTERRUPT_LINE_NO_CONNECTION	0xff
    124      1.3    fvdl 
    125      1.6  sekiya void pci_device_foreach(pci_chipset_tag_t, int,
    126      1.6  sekiya 			void (*)(pci_chipset_tag_t, pcitag_t, void*),
    127      1.6  sekiya 			void *);
    128      1.6  sekiya 
    129      1.6  sekiya void pci_device_foreach_min(pci_chipset_tag_t, int, int,
    130      1.6  sekiya 			    void (*)(pci_chipset_tag_t, pcitag_t, void*),
    131      1.6  sekiya 			    void *);
    132      1.6  sekiya 
    133      1.6  sekiya void pci_bridge_foreach(pci_chipset_tag_t, int, int,
    134      1.6  sekiya 	void (*) (pci_chipset_tag_t, pcitag_t, void *), void *);
    135      1.6  sekiya 
    136      1.6  sekiya 
    137      1.5    yamt #endif /* _X86_PCI_MACHDEP_H_ */
    138