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OPNsense - FreeBSD source
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Jessica Clarke 31776afdc7 pci_pci: Support growing bus ranges in bus_adjust_resource for NEW_PCIB 
This is the same underlying problem as 2624598064, just for bus ranges
rather than windows. SiFive's HiFive Unmatched has the following
topology:

  Root Port <---> Bridge <---> Bridge <-+-> Bridge <---> (Unused)
   (pcib0)        (pcib1)      (pcib2)  |   (pcib3)
                                        +-> Bridge <---> xHCI
                                        |   (pcib4)
                                        +-> Bridge <---> M.2 E-key
                                        |   (pcib5)
                                        +-> Bridge <---> M.2 M-key
                                        |   (pcib6)
                                        +-> Bridge <---> x16 slot
                                            (pcib7)

If a device is plugged into the x16 slot that itself has a bridge, such
as many graphics cards, we currently fail to allocate a bus number for
its child bus (and so pcib_attach_child skips adding a child bus for
further enumeration) as, when the new child bridge attaches, it attempts
to allocate a bus number from its parent (pcib7) which in turn attempts
to grow its own bus range by calling bus_adjust_resource on its own
parent (pcib2) whose bus rman cannot accommodate the request and needs
to itself be extended by calling its own parent (pcib1). Note that
pcib3-7 do not face the same issue when they attach since pcib1 ends up
managing bus numbers 1-255 from the beginning and so never needs to grow
its own range.

Reviewed by:	jhb, mav
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D32011
2021-10-03 19:35:26 +01:00
.cirrus-ci Cirrus-CI: add some timing info on pkg install failure 2021-08-04 15:02:00 -04:00
.github Vendor import of OpenSSH 8.7p1 2021-08-30 15:14:33 -04:00
bin src/bin/ps: Fix spelling error 2021-10-02 10:39:37 -06:00
cddl dtrace.1: Document a couple of preprocessor-related options 2021-09-07 14:04:50 -04:00
contrib contrib/tzdata: import tzdata 2021c 2021-10-02 10:52:02 +08:00
crypto openssh: use global state for blacklist in grace_alarm_handler 2021-09-16 14:10:11 -04:00
etc Add support for jail.conf.d 2021-09-10 00:30:04 -05:00
gnu dialog: fix macro redefinition 2021-03-01 16:01:44 +01:00
include Add _Fork() 2021-08-03 21:19:32 +03:00
kerberos5 pkgbase: Create a FreeBSD-kerberos package 2021-09-07 10:23:14 +02:00
lib libgcc_s: Export 64-bit int to 128-bit float functions 2021-10-03 19:34:25 +01:00
libexec bootp: remove the USE_BFUNCS knob 2021-09-30 23:47:06 -05:00
release Update Azure release bits 2021-10-02 04:59:10 +08:00
rescue Fix building rescue/rescue when sanitizers are enabled 2021-07-06 12:18:30 +01:00
sbin pfctl: userspace adaptive syncookies configration 2021-09-29 15:11:54 +02:00
secure openssh: Add new source files to libssl 2021-09-10 00:56:24 +02:00
share nvme: Only reset once on attach. 2021-10-01 11:09:34 -06:00
stand EFI loader: Don't free bcache for DEVT_DISK devs 2021-09-30 14:48:14 -07:00
sys pci_pci: Support growing bus ranges in bus_adjust_resource for NEW_PCIB 2021-10-03 19:35:26 +01:00
targets Fix bootstrapping to actually build lldb-tblgen for later use 2021-08-24 15:04:25 +01:00
tests kqueue: fix recent assertion 2021-10-01 13:17:30 -05:00
tools nemtap: lb app: Validate ihl field when hashing packet 2021-09-26 13:48:21 +00:00
usr.bin tcp: Make dsack stats available in netstat and also make sure its aware of TLP's. 2021-10-01 10:36:27 -04:00
usr.sbin freebsd-update(8): Add -j flag to support jails 2021-10-01 13:51:03 -05:00
.arcconfig Remove history.immutable from .arcconfig 2021-04-13 12:36:25 +01:00
.arclint arc lint: ignore /tests/ in chmod 2017-12-19 03:38:06 +00:00
.cirrus.yml Cirrus-CI: add a manually triggered arm64 task 2021-09-14 15:12:55 -04:00
.clang-format clang-format: Add bitset loop macros 2021-09-21 12:08:01 -04:00
.gitattributes Add a basic clang-format configuration file 2019-06-07 15:23:52 +00:00
.gitignore gitignore: Add .clangd and .ccls-cache 2021-06-04 16:56:08 +08:00
COPYRIGHT copyrights: Happy New Year 2021 2020-12-31 10:29:44 -05:00
LOCKS LOCKS: update current locks 2018-06-09 03:08:04 +00:00
MAINTAINERS [skip ci] volunteer to maintain POSIX AIO 2021-05-30 17:21:12 -06:00
Makefile Import tzdata 2021c 2021-10-02 10:47:29 +08:00
Makefile.inc1 Drop cloudabi 2021-09-22 00:18:44 +03:00
Makefile.libcompat Prefer MK_SSP=no to SSP_CFLAGS= 2021-08-04 15:23:22 -03:00
Makefile.sys.inc AUTO_OBJ: For all top-level targets enforce using an OBJDIR. 2017-12-05 21:29:47 +00:00
ObsoleteFiles.inc bluetooth: remove hcseriald 2021-09-29 21:18:17 -06:00
README.md Vendor import of OpenSSH 8.7p1 2021-08-30 15:14:33 -04:00
RELNOTES RELNOTES: Add entries for KASAN and KMSAN 2021-08-11 13:08:36 -04:00
UPDATING UPDATING: new entry about dummynet 2021-09-24 14:21:25 +02:00

README.md

FreeBSD Source:

This is the top level of the FreeBSD source directory.

FreeBSD is an operating system used to power modern servers, desktops, and embedded platforms. A large community has continually developed it for more than thirty years. Its advanced networking, security, and storage features have made FreeBSD the platform of choice for many of the busiest web sites and most pervasive embedded networking and storage devices.

For copyright information, please see the file COPYRIGHT in this directory. Additional copyright information also exists for some sources in this tree - please see the specific source directories for more information.

The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree. See build(7), config(8), FreeBSD handbook on building userland, and Handbook for kernels for more information, including setting make(1) variables.

Source Roadmap:

Directory Description
bin System/user commands.
cddl Various commands and libraries under the Common Development and Distribution License.
contrib Packages contributed by 3rd parties.
crypto Cryptography stuff (see crypto/README).
etc Template files for /etc.
gnu Various commands and libraries under the GNU Public License. Please see gnu/COPYING and gnu/COPYING.LIB for more information.
include System include files.
kerberos5 Kerberos5 (Heimdal) package.
lib System libraries.
libexec System daemons.
release Release building Makefile & associated tools.
rescue Build system for statically linked /rescue utilities.
sbin System commands.
secure Cryptographic libraries and commands.
share Shared resources.
stand Boot loader sources.
sys Kernel sources.
sys/arch/conf Kernel configuration files. GENERIC is the configuration used in release builds. NOTES contains documentation of all possible entries.
tests Regression tests which can be run by Kyua. See tests/README for additional information.
tools Utilities for regression testing and miscellaneous tasks.
usr.bin User commands.
usr.sbin System administration commands.

For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see FreeBSD Handbook.