Hi Josh, On Fri, May 9, 2014 at 9:21 PM, Josh Triplett <josh@xxxxxxxxxxxxxxxx> wrote: > /dev/ioports works like /dev/port, but supports 16-bit and 32-bit ports. > Signed-off-by: Josh Triplett <josh@xxxxxxxxxxxxxxxx> > --- > > Wasn't sure whether I should update the "Modified" notice at the top; > ideally such things should go away in favor of git. Mostly they do go away with Git, but I do add Copyright notices when the changes to the page are substantial (as here). Could you ping me again if/when this looks like heading to mainline? Thanks, Michael > > man4/ioports.4 | 1 + > man4/mem.4 | 21 +++++++++++++++++++-- > 2 files changed, 20 insertions(+), 2 deletions(-) > create mode 100644 man4/ioports.4 > > diff --git a/man4/ioports.4 b/man4/ioports.4 > new file mode 100644 > index 0000000..d4c1762 > --- /dev/null > +++ b/man4/ioports.4 > @@ -0,0 +1 @@ > +.so man4/mem.4 > diff --git a/man4/mem.4 b/man4/mem.4 > index 74b7b89..adfd810 100644 > --- a/man4/mem.4 > +++ b/man4/mem.4 > @@ -25,7 +25,7 @@ > .\" Modified Sat Jul 24 16:59:10 1993 by Rik Faith (faith@xxxxxxxxxx) > .TH MEM 4 1992-11-21 "Linux" "Linux Programmer's Manual" > .SH NAME > -mem, kmem, port \- system memory, kernel memory and system ports > +mem, kmem, port, ioports \- system memory, kernel memory and system ports > .SH DESCRIPTION > .B mem > is a character device file > @@ -66,7 +66,8 @@ chown root:kmem /dev/kmem > .B port > is similar to > .BR mem , > -but the I/O ports are accessed. > +but the I/O ports are accessed. Multi-byte reads or writes to port will > +operate on successive byte-sized ports. > .LP > It is typically created by: > .RS > @@ -75,12 +76,28 @@ mknod \-m 660 /dev/port c 1 4 > .br > chown root:mem /dev/port > .RE > +.LP > +.B ioports > +is similar to > +.BR port , > +but supports reads and writes of 16-bit or 32-bit ports. Reads or writes to > +ioport with sizes other than 1, 2, or 4 will return EINVAL. > +.LP > +It is typically created by: > +.RS > +.sp > +mknod \-m 660 /dev/ioports c 1 12 > +.br > +chown root:mem /dev/ioports > +.RE > .SH FILES > .I /dev/mem > .br > .I /dev/kmem > .br > .I /dev/port > +.br > +.I /dev/ioports > .SH SEE ALSO > .BR chown (1), > .BR mknod (1), > -- > 2.0.0.rc2 > -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/ -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
