RELAY_SUBBUFS_CONSUM(9) relay interface support RELAY_SUBBUFS_CONSUM(9)NAME
relay_subbufs_consumed - update the buffer's sub-buffers-consumed count
SYNOPSIS
void relay_subbufs_consumed(struct rchan * chan, unsigned int cpu, size_t subbufs_consumed);
ARGUMENTS
chan
the channel
cpu
the cpu associated with the channel buffer to update
subbufs_consumed
number of sub-buffers to add to current buf's count
DESCRIPTION
Adds to the channel buffer's consumed sub-buffer count. subbufs_consumed should be the number of sub-buffers newly consumed, not the total
consumed.
NOTE. Kernel clients don't need to call this function if the channel mode is 'overwrite'.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 RELAY_SUBBUFS_CONSUM(9)
Check Out this Related Man Page
RC(4) BSD Kernel Interfaces Manual RC(4)NAME
rc -- RISCom/8 multiport card
SYNOPSIS
device isa
device rc
DESCRIPTION
The RISCom/8 is an eight port ISA RS-232C communications multiplexer with a built in RISC processor. It uses a block of sixteen I/O ports in
the range 0x200 to 0x3f0 selectable by on-board switches or jumpers. The block must be aligned on a sixteen port boundary. The jumper-
selectable hardware interrupt level may be set to be detected during system initialization using settings found in the /boot/device.hints
file.
This driver is mostly based on the Cirrus Logic CL-CD180 driver.
HARDWARE
The rc driver provides support for the SDL Communications RISCom/8 boards.
DIAGNOSTICS
The following driver specific error messages may be reported:
rc%d channel%d: interrupt-level buffer overflow An internal buffer overflow error has occurred on the listed channel. The rc driver will
need to be reloaded to correct this.
rc%d: Bad char chan %d The channel has obtained a bad set of characters.
rc%d: Got extra chars chan %d The rc driver got more characters than expected on the channel shown.
rc%d: data mismatch chan %d ptr %d (%d != %d) Data sent from channel %d to the rx buffer was different then expected.
rc%d: channel %d command timeout, rc.c line: %d A command timeout has occurred on the channel, the src/sys/dev/rc/rc.c file can be consulted
for more information.
SEE ALSO tty(1), ttyname(3), sio(4), tty(4), device.hints(5), comcontrol(8), getty(8), mutex(9), splx(9)
http://www.sdlcomm.com
HISTORY
The rc driver first appeared in FreeBSD 2.0.5. This manual page first appeared in FreeBSD 5.3.
AUTHORS
This manual page was written by Tom Rhodes <trhodes@FreeBSD.org>.
BUGS
The rc driver code still uses the spl(9) functions. These should be replaced by mutex(9) functions.
The various ttyld_*() functions should be documented.
BSD March 18, 2005 BSD
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