it. This arg is most interesting for the 'break' command where it
never worked, and for the step command where it is powerful but too
fragile to use much.
Give the full syntax of the 'addr' arg for these commands and some
others. Rename it from 'address' for the generic command.
Fix description of how 'count' is supposed to work for the 'break'
command.
Don't (mis)describe the syntax of the comma for the 'step' command.
Expand the description for the generic command.
Give the full syntax for the 'examine' command. It was also missing
the possible values for the modifier.
Fix mdoc syntax error for the 'search' command.
Remove FUD about consequences of not having a trap handler for the
'search' command.
Describe PCI-related kernel options for HotPlug and SR-IOV support in the
pci(4) manual page. While here, add a section describing the various
tunables supported by the PCI bus driver as well.
Reviewed by: wblock
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D7754
The cxgbev/cxlv driver supports Virtual Function devices for Chelsio
T4 and T4 adapters. The VF devices share most of their code with the
existing PF4 driver (cxgbe/cxl) and as such the VF device driver
currently depends on the PF4 driver.
Similar to the cxgbe/cxl drivers, the VF driver includes a t4vf/t5vf
PCI device driver that attaches to the VF device. It then creates
child cxgbev/cxlv devices representing ports assigned to the VF.
By default, the PF driver assigns a single port to each VF.
t4vf_hw.c contains VF-specific routines from the shared code used to
fetch VF-specific parameters from the firmware.
t4_vf.c contains the VF-specific PCI device driver and includes its
own attach routine.
VF devices are required to use a different firmware request when
transmitting packets (which in turn requires a different CPL message
to encapsulate messages). This alternate firmware request does not
permit chaining multiple packets in a single message, so each packet
results in a firmware request. In addition, the different CPL message
requires more detailed information when enabling hardware checksums,
so parse_pkt() on VF devices must examine L2 and L3 headers for all
packets (not just TSO packets) for VF devices. Finally, L2 checksums
on non-UDP/non-TCP packets do not work reliably (the firmware trashes
the IPv4 fragment field), so IPv4 checksums for such packets are
calculated in software.
Most of the other changes in the non-VF-specific code are to expose
various variables and functions private to the PF driver so that they
can be used by the VF driver.
Note that a limited subset of cxgbetool functions are supported on VF
devices including register dumps, scheduler classes, and clearing of
statistics. In addition, TOE is not supported on VF devices, only for
the PF interfaces.
Reviewed by: np
MFC after: 2 months
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D7599
This driver only supports 10Mb Ethernet using PIO (the hardware supports
DMA, but the driver only does PIO). There are not any PCCard adapters
supported by this driver, only ISA cards. In addition, it does not use
bus_space but instead uses bcopy with volatile pointers triggering a
host of warnings. (if_ie.c is one of 3 files always built with
-Wno-error)
Relnotes: yes
This hardware is not present on any modern systems. The driver is quite
hackish (raw inb/outb instead of bus_space, and raw inb/outb to random
I/O ports to enable ACPI since it predated proper ACPI support).
Relnotes: yes
The wl(4) driver supports pre-802.11 PCCard wireless adapters that
are slower than 802.11b. They do not work with any of the 802.11
framework and the driver hasn't been reported to actually work in a
long time.
Relnotes: yes
The si(4) driver supported multiport serial adapters for ISA, EISA, and
PCI buses. This driver does not use bus_space, instead it depends on
direct use of the pointer returned by rman_get_virtual(). It is also
still locked by Giant and calls for patch testing to convert it to use
bus_space were unanswered.
Relnotes: yes
alternate TCP stack in other then the closed state (pre-listen/connect).
The idea is that *if* that is supported by the alternate stack, it
is asked if its ok to switch. If it approves the "handoff" then we
allow the switch to happen. Also the fini() function now gets a flag
to tell if you are switching away *or* the tcb is destroyed. The
init() call into the alternate stack is moved to the end so the
tcb is more fully formed before the init transpires.
Sponsored by: Netflix Inc.
Differential Revision: D6790
This is a driver for a pre-ATAPI ISA CD-ROM adapter. As noted in
the manpage, this driver is only useful as a backend to cdcontrol to
play audio CDs since it doesn't use DMA, so its data performance is
"abysmal" (and that was true in the mid 90's).
Previously the loop in PCIIOCGETCONF would terminate as soon as it
found enough matches. Now it will continue iterating through the
PCI device list and only terminate if it finds another matching device
for which it has no room to store a conf structure. This means that
PCI_GETCONF_LAST_DEVICE is reliably returned when the number of
matching devices is equal to the number of slots in the matches
buffer. For example, if a program requests the conf structure for a
single PCI function with a specified domain/bus/slot/function it will
now get PCI_GETCONF_LAST_DEVICE instead of PCI_GETCONF_MORE_DEVS.
While here, simplify the loop conditional a bit more by explicitly
breaking out of the loop if copyout() fails and removing a redundant
i < pci_numdevs check.
Reviewed by: vangyzen, imp
MFC after: 1 month
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D7445
New design allows to attach multiple consumers to ntb_transport(4) instance.
Previous design obtained from Linux theoretically allowed that, but was not
practically usable (Linux also has only one consumer driver now).
New design allows hardware resources to be split between several consumers.
For example, one BAR can be dedicated for remote memory access, while other
resources can be used for packet transport for virtual Ethernet interface.
And even without resource split, this code allows to specify which consumer
driver should attach the hardware.
From some points this makes the code even closer to Linux one, even though
Linux does not provide the described flexibility.
- Support for the AC3165 and AC8260 chipsets was added by r303322 and r303327.
Approved by: adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D7322
f/w for the other devices supported by this driver.
Patch linked in https://reviews.freebsd.org/D6967 but not actually
a part of the review.
Obtained from DragonflyBSD.
Submitted by: Kevin Bowling <kev009@kev009.com>
MFC after: 2 weeks
Relnotes: yes
The asynchronous I/O changes made previously result in different
behavior out of the box. Previously all AIO requests failed with
ENOSYS / SIGSYS unless aio.ko was explicitly loaded. Now, some AIO
requests complete and others ("unsafe" requests) fail with EOPNOTSUPP.
Reword the introductory paragraph in aio(4) to add a general
description of AIO before describing the vfs.aio.enable_unsafe sysctl.
Remove the ENOSYS error description from aio_fsync(2), aio_read(2),
and aio_write(2) and replace it with a description of EOPNOTSUPP.
Remove the ENOSYS error description from aio_mlock(2).
Log a message to the system log the first time a process requests an
"unsafe" AIO request that fails with EOPNOTSUPP. This is modeled on
the log message used for processes using the legacy pty devices.
Reviewed by: kib (earlier version)
MFC after: 1 week
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D7151
And rename "DEFAULT" constants to the more accurate "MAX."
PR: 210382
Submitted by: Felix <felixphew0 at gmail.com>
Reviewed by: wblock, cem
Tested by: Dave Cottlehuber <dch at skunkwerks.at>
- Add a sigevent(3) manpage to give a general overview of the sigevent
structure and the available notification mechanisms.
- Document that AIO requests contain a nested sigevent structure that can
be used to request completion notification.
- Expand the sigevent details in other manuals to note details such as
the extra values stored in a queued signal's information or in a posted
kevent.
Reviewed by: kib
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D7122
rS274085 made vt(4) the default system console. Catch up to this in
the man page description for the kern.vty tunable.
Reviewed by: bz
Approved by: re (hrs)
Differential Revision: https://reviews.freebsd.org/D6901
Mention URTWN_WITHOUT_UCODE option (r295871), hardware encryption support
(r292175), IBSS (r290651) and HOSTAP (r290631) mode support;
cleanup CAVEATS section (some 11n support was added in r297175 + add a
note about current rate control issues).
