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libbsd.txt: Move ported kernel features

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Remove obsolete file listing.
This commit is contained in:
Sebastian Huber
2022-05-23 15:00:24 +02:00
parent 06ee26024e
commit 099b7eb535
2 changed files with 23 additions and 291 deletions
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23
CONTRIBUTING.rst
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@@ -430,3 +430,26 @@ DHCPCD(8) client is a consumer of these events for example. Make sure that the
interface flag ``IFF_UP`` and the interface driver flag ``IFF_DRV_RUNNING`` is
set in case the link is up, otherwise ``ether_output()`` will return the error
status ``ENETDOWN``.
FreeBSD Kernel Features Ported to LibBSD
========================================
All lock based synchronization primitives are implemented through mutexes using
the priority inheritance protocol.
* `BUS_DMA(9) <http://www.freebsd.org/cgi/man.cgi?query=bus_dma&sektion=9>`_: Bus and Machine Independent DMA Mapping Interface
* `BUS_SPACE(9) <http://www.freebsd.org/cgi/man.cgi?query=bus_space&sektion=9>`_: Bus space manipulation functions
* `CALLOUT(9) <http://www.freebsd.org/cgi/man.cgi?query=callout&sektion=9>`_: Execute a function after a specified length of time
* `CONDVAR(9) <http://www.freebsd.org/cgi/man.cgi?query=condvar&sektion=9>`_: Kernel condition variable
* `DEVICE(9) <http://www.freebsd.org/cgi/man.cgi?query=device&sektion=9>`_: An abstract representation of a device
* `DRIVER(9) <http://www.freebsd.org/cgi/man.cgi?query=driver&sektion=9>`_: Structure describing a device driver
* `EPOCH(9) <http://www.freebsd.org/cgi/man.cgi?query=epoch&sektion=9>`_: Kernel epoch based reclamation
* `MUTEX(9) <http://www.freebsd.org/cgi/man.cgi?query=mutex&sektion=9>`_: Kernel synchronization primitives
* `RMAN(9) <http://www.freebsd.org/cgi/man.cgi?query=rman&sektion=9>`_: Resource management functions
* `RMLOCK(9) <http://www.freebsd.org/cgi/man.cgi?query=rmlock&sektion=9>`_: Kernel reader/writer lock optimized for read-mostly access patterns
* `RWLOCK(9) <http://www.freebsd.org/cgi/man.cgi?query=rwlock&sektion=9>`_: Kernel reader/writer lock
* `SX(9) <http://www.freebsd.org/cgi/man.cgi?query=sx&sektion=9>`_: Kernel shared/exclusive lock
* `SYSCTL(9) <http://www.freebsd.org/cgi/man.cgi?query=SYSCTL_DECL&sektion=9>`_: Dynamic and static sysctl MIB creation functions
* `SYSINIT(9) <http://www.freebsd.org/cgi/man.cgi?query=sysinit&sektion=9>`_: A framework for dynamic kernel initialization
* `TASKQUEUE(9) <http://www.freebsd.org/cgi/man.cgi?query=taskqueue&sektion=9>`_: Asynchronous task execution
* `UMA(9) <http://www.freebsd.org/cgi/man.cgi?query=uma&sektion=9>`_: General-purpose kernel object allocator

291
libbsd.txt
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@@ -298,66 +298,6 @@ SYSCTL_NODE(, CTL_KERN, kern, CTLFLAG_RW, 0,
"High kernel, proc, limits &c");
----
== Core FreeBSD APIs and RTEMS Replacements ==
=== SX(9) (Shared/exclusive locks) ===
http://www.freebsd.org/cgi/man.cgi?query=sx
Binary semaphores (this neglects the ability to allow shared access).
=== MUTEX(9) (Mutual exclusion) ===
http://www.freebsd.org/cgi/man.cgi?query=mutex
Binary semaphores (not recursive mutexes are not supported this way).
=== RWLOCK(9) (Reader/writer lock) ===
http://www.freebsd.org/cgi/man.cgi?query=rwlock
POSIX r/w lock.
=== RMLOCK(9) (Reader/writer lock optimized for mostly read access patterns) ===
Note: This object was implemented as a wrapper for RWLOCK in the rm_lock header file.
http://www.freebsd.org/cgi/man.cgi?query=rmlock
POSIX r/w lock.
=== CONDVAR(9) (Condition variables) ===
http://www.freebsd.org/cgi/man.cgi?query=condvar
POSIX condition variables with modifications (hack).
=== CALLOUT(9) (Timer functions) ===
http://www.freebsd.org/cgi/man.cgi?query=callout
Timer server.
=== TASKQUEUE(9) (Asynchronous task execution) ===
http://www.freebsd.org/cgi/man.cgi?query=taskqueue
TBD.
=== KTHREAD(9), KPROC(9) (Tasks) ===
http://www.freebsd.org/cgi/man.cgi?query=kthread
http://www.freebsd.org/cgi/man.cgi?query=kproc
Tasks.
=== ZONE(9) (Zone allocator) ===
http://www.freebsd.org/cgi/man.cgi?query=zone
TBD.
=== devfs (Device file system) ===
There is a minimal implementation based on IMFS. The mount point is fixed to
@@ -370,237 +310,6 @@ for the device.
TBD: remove empty paths on devfs_destroy().
=== psignal (Signals) ===
TBD. Seems to be not needed.
=== poll, select ===
TBD. Seems to be not needed.
=== RMAN(9) (Resource management) ===
http://www.freebsd.org/cgi/man.cgi?query=rman
TBD. Seems to be not needed.
=== DEVCLASS(9), DEVICE(9), DRIVER(9), MAKE_DEV(9) (Device management) ===
http://www.freebsd.org/cgi/man.cgi?query=devclass
http://www.freebsd.org/cgi/man.cgi?query=device
http://www.freebsd.org/cgi/man.cgi?query=driver
http://www.freebsd.org/cgi/man.cgi?query=make_dev
Use FreeBSD implementation as far as possible. FreeBSD has a nice API for
dynamic device handling. It may be interesting for RTEMS to use this API
internally in the future.
=== BUS_SPACE(9), BUS_DMA(9) (Bus and DMA access) ===
http://www.freebsd.org/cgi/man.cgi?query=bus_space
http://www.freebsd.org/cgi/man.cgi?query=bus_dma
Likely BSP dependent. A default implementation for memory mapped linear access
is easy to provide. The current heap implementation supports all properties
demanded by bus_dma (including the boundary constraint).
== RTEMS Replacements by File Description ==
Note: Files with a status of USB are used by the USB test and have at least
been partially tested. If they contain both USB and Nic, then they are used
by both and MAY contain methods that have not been tested yet. Files that
are only used by the Nic test are the most suspect.
----
rtems-libbsd File: rtems-bsd-assert.c
FreeBSD File: rtems-bsd-config.h redefines BSD_ASSERT.
Description: This file contains the support method rtems_bsd_assert_func().
Status: USB, Nic
rtems-libbsd File: rtems-bsd-autoconf.c
FreeBSD File: FreeBSD has BSP specific autoconf.c
Description: This file contains configuration methods that are used to setup the system.
Status: USB
rtems-libbsd File: rtems-bsd-bus-dma.c
FreeBSD File: FreeBSD has BSP specific busdma_machdep.c
Description:
Status: USB, Nic
rtems-libbsd File: rtems-bsd-bus-dma-mbuf.c
FreeBSD File: FreeBSD has BSP specific busdma_machdep.c
Description:
Status: Nic
rtems-libbsd File: rtems-bsd-callout.c
FreeBSD File: kern/kern_timeout.c
Description:
Status: USB, Nic
rtems-libbsd File: rtems-bsd-cam.c
FreeBSD File: cam/cam_sim.c
Description:
Status: USB
rtems-libbsd File: rtems-bsd-condvar.c
FreeBSD File: kern/kern_condvar.c
Description:
Status: USB
rtems-libbsd File: rtems-bsd-copyinout.c
FreeBSD File: bsp specific copyinout.c )
Description: Note: The FreeBSD file is split with some methods being in rtems-bsd-support
Status: Nic
rtems-libbsd File: rtems-bsd-delay.c
FreeBSD File: bsp specific file with multiple names
Description:
Status: USB, Nic
rtems-libbsd File: rtems-bsd-descrip.c
FreeBSD File: kern/kern_descrip.c
Description:
Status: Nic
rtems-libbsd File: rtems-bsd-generic.c
FreeBSD File: kern/sys_generic.c
Description:
Status: Nic
rtems-libbsd File: rtems-bsd-init.c
FreeBSD File: N/A
Description:
Status: USB, Nic
rtems-libbsd File: rtems-bsd-init-with-irq.c
FreeBSD File: N/A
Description:
Status: USB, Nic
rtems-libbsd File: rtems-bsd-jail.c
FreeBSD File: kern/kern_jail.c
Description:
Status: USB, Nic
rtems-libbsd File: rtems-bsd-lock.c
FreeBSD File: kern/subr_lock.c
Description:
Status: USB, Nic
rtems-libbsd File: rtems-bsd-log.c
FreeBSD File: kern/subr_prf.c
Description:
Status: Nic
rtems-libbsd File: rtems-bsd-malloc.c
FreeBSD File: kern/kern_malloc.c
Description:
Status: USB, Nic
rtems-libbsd File: rtems-bsd-mutex.c
FreeBSD File: kern/kern_mutex.c
Description:
Status: USB, Nic
rtems-libbsd File: rtems-bsd-newproc.c
FreeBSD File: N/A
Description:
Status: Nic
rtems-libbsd File: rtems-bsd-nexus.c
FreeBSD File: bsp specific nexus.c
Description:
Status: USB
rtems-libbsd File: rtems-bsd-panic.c
FreeBSD File: boot/common/panic.c
Description:
Status: USB, Nic
rtems-libbsd File: rtems-bsd-rwlock.c
FreeBSD File: kern_rwlock.c
Description:
Status: USB, Nic
rtems-libbsd File: rtems-bsd-shell.c
FreeBSD File: N/A
Description:
Status: USB
rtems-libbsd File: rtems-bsd-signal.c
FreeBSD File: kern/kern_sig.c
Description:
Status: Nic
rtems-libbsd File: rtems-bsd-smp.c
FreeBSD File: N/A
Description:
Status: Nic
rtems-libbsd File: rtems-bsd-support.c
FreeBSD File: bsp specific copyinout.c
Description: Note: the FreeBSD file is split with some methods being in rtems-bsd-copyinout.
Status: USB, Nic
rtems-libbsd File: rtems-bsd-sx.c
FreeBSD File: kern/kern_sx.c
Description: Status: USB, Nic
rtems-libbsd File: rtems-bsd-synch.c
FreeBSD File: kern/kern_synch.c
Description:
Status: USB, Nic
rtems-libbsd File: rtems-bsd-syscalls.c
FreeBSD File: User API for kern/uipc_syscalls.c
Description:
Status: Nic
rtems-libbsd File: rtems-bsd-sysctlbyname.c
FreeBSD File: User API for sysctlbyname(3)
Description:
Status:
rtems-libbsd File: rtems-bsd-sysctl.c
FreeBSD File: User API for sysctl(8)
Description:
Status:
rtems-libbsd File: rtems-bsd-sysctlnametomib.c
FreeBSD File: User API for sysctlnametomib
Description:
Status:
rtems-libbsd File: rtems-bsd-taskqueue.c
FreeBSD File: kern/subr_taskqueue.c
Description:
Status: Nic
rtems-libbsd File: rtems-bsd-thread.c
FreeBSD File: kern/kern_kthread.c
Description:
Status: USB, Nic
rtems-libbsd File: rtems-bsd-timeout.c
FreeBSD File: kern/kern_timeout.c
Description:
Status: Nic
rtems-libbsd File: rtems-bsd-timesupport.c
FreeBSD File: kern/kern_clock.c
Description:
Status: Nic
rtems-libbsd File: rtems-bsd-vm_glue.c
FreeBSD File: vm/vm_glue.c
Description:
Status: USB, Nic
----
== Notes by File ==
altq_subr.c - Arbitrary choices were made in this file that RTEMS would