Commit Graph

14 Commits

Author SHA1 Message Date
Ruslan Ermilov
9fddcc6661 Fix our ioctl(2) implementation when the argument is "int". New
ioctls passing integer arguments should use the _IOWINT() macro.
This fixes a lot of ioctl's not working on sparc64, most notable
being keyboard/syscons ioctls.

Full ABI compatibility is provided, with the bonus of fixing the
handling of old ioctls on sparc64.

Reviewed by:	bde (with contributions)
Tested by:	emax, marius
MFC after:	1 week
2006-09-27 19:57:02 +00:00
Ruslan Ermilov
8ad58ac6ee Revert back to always using *(int *)arg for now. While this
is incorrect, and causes endianness bugs on 64-bit big-endian
machines (sparc64), it's the best choice for now, as many of
these IOCTLs are used inside the kernel, and bogusly pass an
argument as "int *" which results in unaligned access panics
on sparc64 when attempting to dereference them via *(intptr_t *).

(Several of us are working on a real fix, which is uneasy.)
2006-09-20 11:43:36 +00:00
Ruslan Ermilov
9e24e7f60b Make typecast expressions comply with style(9). 2006-09-19 13:03:09 +00:00
Ruslan Ermilov
9cd96497d6 This time, really fix endian bugs accessing ioctl arguments that
are passed by value.  These are KDSKBMODE, KDSETLED, KDSKBSTATE,
and KDSETRAD.

Tested on:	amd64, sparc64 (demo code)
2006-09-19 13:01:20 +00:00
Ruslan Ermilov
225fcb2690 Back out revision 1.8. The only thing it did was to break LEDs (and
some other less noticeable things) on little-endian 64-bit platforms
such as amd64.

PR:		kern/101931
Discussed with:	emax, marius
MFC after:	1 day
2006-09-19 09:34:25 +00:00
Maksim Yevmenkin
04c1ba9b05 Add extra code into kbdmux(4)s read_char() method to
poll (i.e. call read_char() method) slave keyboards.

This workaround should fix problem with kbdmux(4) and
atkbd(4) not working in ddb(4) and mid-boot.

MFC after:	1 week
2006-07-27 20:33:48 +00:00
Maksim Yevmenkin
af0618e9d4 Fix endian bugs accessing ioctl arguments that are passed by value.
Pointed out by:	marius
MFC after:	1 day
2006-03-03 00:46:28 +00:00
Maksim Yevmenkin
b569776d07 Provide ability to disable kbdmux(4) with the hint.kbdmux.0.disabled="1" hint.
Document hint in the kbdmux(4) man page.

Requested by:	scottl
MFC after:	1 day
2006-03-01 18:34:48 +00:00
Maksim Yevmenkin
40a3c5ea70 Plug memory leak
MFC after:	1 day
2006-02-27 21:47:38 +00:00
Maksim Yevmenkin
65b70c1dfd Put a comment, explaining why kbdmux(4) had to be fixed.
While I'm here fix a couple of whitespaces.

Requested by:	netchild
MFC after:	1 day
2006-02-25 22:59:01 +00:00
Maksim Yevmenkin
fd4df69975 Fix hard lockup caused by kbdmux(4) when kbdmux(4), PS/2 keyboard
(atkbd(4)) and PS/2 mouse (psm(4)) are used together.

Turns out that atkbd(4) check_char() method may return "true" while
read_char() method returns NOKEY. When this happens kbdmux(4) was
simply stuck in the dead loop. Avoid dead loop in kbdmux(4) by breaking
out of the loop if read_char() method returns NOKEY.

It almost seems like a bug in atkkbd(4), atkbd_check_char() calls
kbdc_data_ready(), and, the later will return "true" if there are
pending data in either kbd or aux queue. However, because both aux
and kbd are on the same controller, I'm not sure if this is a bug
or feature.

Tested by:	markus
MFC after:	1 day
2006-02-25 21:59:29 +00:00
Yaroslav Tykhiy
3423126960 Spotted a call to a cdev-related function not wrapped
in "#ifdef KBD_INSTALL_CDEV".

Noticed by:	glebius
Uncovered by:	recent change to modules' Makefiles
2005-10-18 06:38:14 +00:00
Maksim Yevmenkin
4673ea01e3 kbdmux(4) keyboard multiplexer integration
o Slightly change KBADDKBD and KBRELKBD ioctl() interface. Instead of passing
  keyboard index pass keyboard_info_t structure with populated 'kb_unit' and
  'kb_name' fields. Keyboard index is not very user-friendly and is not very
  easy to obtain. Keyboard driver name and unit, on the other hand, is much
  more user friendly and known almost all the time;

o Move definition of keyboard_info_t structure up;

o Teach kbdcontrol(1) how to attach/detach keyboards to/from the keyboard
  multiplexor;

o Update kbdcontrol(1) man page and document new functionality.

To attach/detach keyboard to/from keyboard multiplexor one needs to use
keyboard device name (i.e. ukbd0).

MFC after:	1 week
2005-07-14 22:43:20 +00:00
Maksim Yevmenkin
dfa494399b kbdmux(4) keyboard multiplexer integration
o Add sys/dev/kbdmux/kbdmux.c to the source tree

o Add sys/modules/kbdmux/Makefile to the source tree

These are not yet connected to the build. Man page and other changes to follow.

MFC after:	1 week
2005-07-14 17:48:04 +00:00