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/* $OpenBSD: pci_machdep.h,v 1.6 2008/12/03 15:46:06 oga Exp $ */
/* $NetBSD: pci_machdep.h,v 1.1 2003/02/26 21:26:11 fvdl Exp $ */
/*
* Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
* Copyright (c) 1994 Charles M. Hannum. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Charles M. Hannum.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Machine-specific definitions for PCI autoconfiguration.
*/
/*
* i386-specific PCI structure and type definitions.
* NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE.
*
* Configuration tag; created from a {bus,device,function} triplet by
* pci_make_tag(), and passed to pci_conf_read() and pci_conf_write().
* We could instead always pass the {bus,device,function} triplet to
* the read and write routines, but this would cause extra overhead.
*
* Mode 2 is historical and deprecated by the Revision 2.0 specification.
*/
union x86_pci_tag_u {
u_int32_t mode1;
struct {
u_int16_t port;
u_int8_t enable;
u_int8_t forward;
} mode2;
};
extern struct bus_dma_tag pci_bus_dma_tag;
/*
* Types provided to machine-independent PCI code
*/
typedef void *pci_chipset_tag_t;
typedef union x86_pci_tag_u pcitag_t;
typedef struct {
pcitag_t tag;
int line, pin;
} pci_intr_handle_t;
#define pci_intr_line(ih) ((ih.line) & 0xff)
/*
* i386-specific PCI variables and functions.
* NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE.
*/
extern int pci_mode;
int pci_mode_detect(void);
int pci_bus_flags(void);
struct pci_attach_args;
/*
* Functions provided to machine-independent PCI code.
*/
void pci_attach_hook(struct device *, struct device *,
struct pcibus_attach_args *);
int pci_bus_maxdevs(pci_chipset_tag_t, int);
pcitag_t pci_make_tag(pci_chipset_tag_t, int, int, int);
void pci_decompose_tag(pci_chipset_tag_t, pcitag_t,
int *, int *, int *);
pcireg_t pci_conf_read(pci_chipset_tag_t, pcitag_t, int);
void pci_conf_write(pci_chipset_tag_t, pcitag_t, int,
pcireg_t);
int pci_intr_map(struct pci_attach_args *, pci_intr_handle_t *);
const char *pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t);
void *pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t,
int, int (*)(void *), void *, char *);
void pci_intr_disestablish(pci_chipset_tag_t, void *);
void pci_decompose_tag(pci_chipset_tag_t, pcitag_t,
int *, int *, int *);
/*
* ALL OF THE FOLLOWING ARE MACHINE-DEPENDENT, AND SHOULD NOT BE USED
* BY PORTABLE CODE.
*/
/*
* Section 6.2.4, `Miscellaneous Functions' of the PCI Specification,
* says that 255 means `unknown' or `no connection' to the interrupt
* controller on a PC.
*/
#define X86_PCI_INTERRUPT_LINE_NO_CONNECTION 0xff
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