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1587a9db92
This commit changes the API of pci_cfgreg(read|write) to add a domain argument (referred to as a segment in ACPI parlance) (note that this is not the same as a NUMA domain, but something PCI-specific). This does not yet enable access to domains other than 0, but updates the API to support domains. Places that use hard-coded bus/slot/function addresses have been updated to hardcode a domain of 0. A few places that have the PCI domain (segment) available such as the acpi_pcib_acpi.c Host-PCI bridge driver pass the PCI domain. The hpt27xx(4) and hptnr(4) drivers fail to attach to a device not on domain 0 since they provide APIs to their binary blobs that only permit bus/slot/function addressing. The x86 non-ACPI PCI bus drivers all hardcode a domain of 0 as they do not support multiple domains. Reviewed by: imp Differential Revision: https://reviews.freebsd.org/D42827
74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
/*-
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* Copyright (c) 2015 The FreeBSD Foundation
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*
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* This software was developed by Semihalf under
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* the sponsorship of the FreeBSD Foundation.
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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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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <machine/pci_cfgreg.h>
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/*
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* This file contains stubs for ACPI PCI functions
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*/
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/*
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* Read configuration space register
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*/
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uint32_t
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pci_cfgregread(int domain, int bus, int slot, int func, int reg, int bytes)
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{
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/* ARM64TODO */
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panic("pci_cfgregread not implemented");
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return (0);
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}
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/*
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* Write configuration space register
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*/
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void
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pci_cfgregwrite(int domain, int bus, int slot, int func, int reg, uint32_t data,
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int bytes)
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{
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/* ARM64TODO */
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panic("pci_cfgregwrite not implemented");
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}
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/*
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* Initialize access to configuration space
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*/
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int
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pci_cfgregopen(void)
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{
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/* ARM64TODO */
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panic("pci_cfgregopen not implemented");
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return (0);
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}
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