Date: Wed, 12 Feb 2014 14:25:48 -0500 From: John Baldwin <jhb@freebsd.org> To: ia64@freebsd.org Cc: Marcel Moolenaar <marcel@freebsd.org> Subject: Re: svn commit: r261790 - in head/sys: amd64/include dev/acpica dev/cardbus dev/pccbb dev/pci i386/include sparc64/pci x86/include x86/pci x86/x86 Message-ID: <201402121425.48635.jhb@freebsd.org> In-Reply-To: <201402120430.s1C4Uctm088069@svn.freebsd.org> References: <201402120430.s1C4Uctm088069@svn.freebsd.org>
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On Tuesday, February 11, 2014 11:30:38 pm John Baldwin wrote: > Author: jhb > Date: Wed Feb 12 04:30:37 2014 > New Revision: 261790 > URL: http://svnweb.freebsd.org/changeset/base/261790 > > Log: > Add support for managing PCI bus numbers. As with BARs and PCI-PCI bridge > I/O windows, the default is to preserve the firmware-assigned resources. > PCI bus numbers are only managed if NEW_PCIB is enabled and the architecture > defines a PCI_RES_BUS resource type. > - Add a helper API to create top-level PCI bus resource managers for each > PCI domain/segment. Host-PCI bridge drivers use this API to allocate > bus numbers from their associated domain. > - Change the PCI bus and CardBus drivers to allocate a bus resource for > their bus number from the parent PCI bridge device. > - Change the PCI-PCI and PCI-CardBus bridge drivers to allocate the > full range of bus numbers from secbus to subbus from their parent bridge. > The drivers also always program their primary bus register. The bridge > drivers also support growing their bus range by extending the bus resource > and updating subbus to match the larger range. > - Add support for managing PCI bus resources to the Host-PCI bridge drivers > used for amd64 and i386 (acpi_pcib, mptable_pcib, legacy_pcib, and qpi_pcib). > - Define a PCI_RES_BUS resource type for amd64 and i386. Since ia64 only uses ACPI Host-PCI bridges, I believe that this can be enabled on ia64 by just adding an appropriate #define for PCI_RES_BUS to <machine/bus.h>. I just have no way to test it. -- John Baldwin
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