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support machines having multiple independently numbered PCI domains and don't support reenumeration without ambiguity amongst the devices as seen by the OS and represented by PCI location strings. This includes introducing a function pci_find_dbsf(9) which works like pci_find_bsf(9) but additionally takes a domain number argument and limiting pci_find_bsf(9) to only search devices in domain 0 (the only domain in single-domain systems). Bge(4) and ofw_pcibus(4) are changed to use pci_find_dbsf(9) instead of pci_find_bsf(9) in order to no longer report false positives when searching for siblings and dupe devices in the same domain respectively. Along with this change the sole host-PCI bridge driver converted to actually make use of PCI domain support is uninorth(4), the others continue to use domain 0 only for now and need to be converted as appropriate later on. Note that this means that the format of the location strings as used by pciconf(8) has been changed and that consumers of <sys/pciio.h> potentially need to be recompiled. Suggested by: jhb Reviewed by: grehan, jhb, marcel Approved by: re (kensmith), jhb (PCI maintainer hat)
58 lines
2.3 KiB
C
58 lines
2.3 KiB
C
/*-
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* Copyright (c) 2000 Peter Wemm <peter@FreeBSD.org>
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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_LEGACYVAR_H_
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#define _MACHINE_LEGACYVAR_H_
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enum legacy_device_ivars {
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LEGACY_IVAR_PCIDOMAIN,
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LEGACY_IVAR_PCIBUS
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};
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#define LEGACY_ACCESSOR(var, ivar, type) \
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__BUS_ACCESSOR(legacy, var, LEGACY, ivar, type)
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LEGACY_ACCESSOR(pcidomain, PCIDOMAIN, uint32_t)
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LEGACY_ACCESSOR(pcibus, PCIBUS, uint32_t)
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#undef LEGACY_ACCESSOR
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int legacy_pcib_maxslots(device_t dev);
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uint32_t legacy_pcib_read_config(device_t dev, int bus, int slot, int func,
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int reg, int bytes);
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int legacy_pcib_read_ivar(device_t dev, device_t child, int which,
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uintptr_t *result);
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void legacy_pcib_write_config(device_t dev, int bus, int slot, int func,
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int reg, u_int32_t data, int bytes);
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int legacy_pcib_write_ivar(device_t dev, device_t child, int which,
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uintptr_t value);
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struct resource *legacy_pcib_alloc_resource(device_t dev, device_t child,
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int type, int *rid, u_long start, u_long end, u_long count, u_int flags);
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#endif /* !_MACHINE_LEGACYVAR_H_ */
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