da3136aba8
(soon to be documented on mailing lists; eventually in section 9 manual
pages), most importantly:
(1) support interrupt pin swizzling on non-i386 systems with
PCI-PCI bridges (per PPB spec; done, but meaningless, on i386).
(2) provide pci_{io,mem}_find(), to determine what I/O or memory
space is described by a given PCI configuration space
mapping register.
(3) provide pci_intr_map(), pci_intr_string(), and
pci_intr_{,dis}establish() to manipulate and print info about
PCI interrupts.
(4) deprecate the pci_map_* functions, and provide them only
as compatibility interfaces (in pci_compat.c) which will
eventually go away, implemented as wrappers around
the functions described above.
(5) make pci functions take as an argument a machine-dependent
cookie, to allow more flexibility in implementation.
95 lines
3.7 KiB
C
95 lines
3.7 KiB
C
/* $NetBSD: pci_machdep.h,v 1.5 1996/03/27 04:01:16 cgd Exp $ */
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/*
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* Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
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* Copyright (c) 1994 Charles Hannum. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Charles Hannum.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Machine-specific definitions for PCI autoconfiguration.
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*/
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/*
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* i386-specific PCI structure and type definitions.
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* NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE.
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*
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* Configuration tag; created from a {bus,device,function} triplet by
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* pci_make_tag(), and passed to pci_conf_read() and pci_conf_write().
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* We could instead always pass the {bus,device,function} triplet to
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* the read and write routines, but this would cause extra overhead.
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*
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* Mode 2 is historical and deprecated by the Revision 2.0 specification.
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*/
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union i386_pci_tag_u {
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u_int32_t mode1;
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struct {
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u_int16_t port;
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u_int8_t enable;
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u_int8_t forward;
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} mode2;
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};
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/*
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* Types provided to machine-independent PCI code
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*/
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typedef void *pci_chipset_tag_t;
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typedef union i386_pci_tag_u pcitag_t;
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typedef int pci_intr_handle_t;
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/*
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* i386-specific PCI variables and functions.
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* NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE.
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*/
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extern int pci_mode;
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int pci_mode_detect __P((void));
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/*
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* Functions provided to machine-independent PCI code.
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*/
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void pci_attach_hook __P((struct device *, struct device *,
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struct pcibus_attach_args *));
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int pci_bus_maxdevs __P((pci_chipset_tag_t, int));
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pcitag_t pci_make_tag __P((pci_chipset_tag_t, int, int, int));
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pcireg_t pci_conf_read __P((pci_chipset_tag_t, pcitag_t, int));
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void pci_conf_write __P((pci_chipset_tag_t, pcitag_t, int,
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pcireg_t));
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int pci_intr_map __P((pci_chipset_tag_t, pcitag_t, int, int,
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pci_intr_handle_t *));
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const char *pci_intr_string __P((pci_chipset_tag_t, pci_intr_handle_t));
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void *pci_intr_establish __P((pci_chipset_tag_t, pci_intr_handle_t,
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int, int (*)(void *), void *));
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void pci_intr_disestablish __P((pci_chipset_tag_t, void *));
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/*
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* Compatibility functions, to map the old i386 PCI functions to the new ones.
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* NOT TO BE USED BY NEW CODE.
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*/
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void *pci_map_int __P((pcitag_t, int, int (*)(void *), void *));
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int pci_map_io __P((pcitag_t, int, int *));
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int pci_map_mem __P((pcitag_t, int, vm_offset_t *, vm_offset_t *));
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