rather than forwarding interrupts from the clock devices around using IPIs:
- Add an IDT vector that pushes a clock frame and calls
lapic_handle_timer().
- Add functions to program the local APIC timer including setting the
divisor, and setting up the timer to either down a periodic countdown
or one-shot countdown.
- Add a lapic_setup_clock() function that the BSP calls from
cpu_init_clocks() to setup the local APIC timer if it is going to be
used. The setup uses a one-shot countdown to calibrate the timer. We
then program the timer on each CPU to fire at a frequency of hz * 3.
stathz is defined as freq / 23 (hz * 3 / 23), and profhz is defined as
freq / 2 (hz * 3 / 2). This gives the clocks relatively prime divisors
while keeping a low LCM for the frequency of the clock interrupts.
Thanks to Peter Jeremy for suggesting this approach.
- Remove the hardclock and statclock forwarding code including the two
associated IPIs. The bitmap IPI handler has now effectively degenerated
to just IPI_AST.
- When the local APIC timer is used we don't turn the RTC on at all, but
we still enable interrupts on the ISA timer 0 (i8254) for timecounting
purposes.
uses the i8237 without trying to emulate the PC architecture move
the register definitions for the i8237 chip into the central include
file for the chip, except for the PC98 case which is magic.
Add new isa_dmatc() function which tells us as cheaply as possible
if the terminal count has been reached for a given channel.
interrupts, read from the interrupt status register to clear any pending
interrupts. Otherwise in some rare cases the RTC would never fire any
interrupts as it constantly thinks it has an interrupt pending.
PR: i386/17800
PR: kern/76776
Submitted by: Jose M. Alcaide jose at we dot lc dot ehu dot es
MFC after: 2 weeks
have seen in the isa pnp case where a resource buts up against
0xffffffff. This would only impact when the board was booted without
ACPI.
Submitted by: Ed Maste (freebsd-stable <20050103145720.GA90754@sandvine.com>)
MFC After: 5 days
o Implement a shiny new algorithm to keep track of finger movement at
slow speeds. This dramatically reduces the level of questionable
language from users trying to resize windows.
o Properly catch the many extra buttons and dials which manufacturers
are known to screw onto Synaptics touchpad controllers. Currently,
up to seven buttons are known to work, more should work too.
o Add a number of sysctls allowing one to tune the driver to taste in
a simple way:
# Should the extra buttons act as axes or as middle button
hw.psm.synaptics.directional_scrolls
# These control the 'stickiness' at low speeds
hw.psm.synaptics.low_speed_threshold
hw.psm.synaptics.min_movement
hw.psm.synaptics.squelch_level
PR: kern/75725
Submitted by: Jason Kuri <jay@oneway.com>
MFC after: 1 month
o Move the sysctls under debug.psm.* and hw.psm.* making them a bit
clearer and more consistent with other drivers.
o Remove the debug.psm_soft_timeout sysctl. It was introduced many
moons ago in r1.64 but never referenced anywhere.
o Introduce hw.psm.tap_threshold and hw.psm.tap_timeout to control
the behaviour of taps on touchpads. People might like to fiddle
with these if tapping seems to slow or too fast for them.
o Add debug.psm.loglevel as a tunable so that verbosity can be set
easily at boot-time (to watch probes and such) without having to
compile a kernel with options PSM_DEBUG=N.
These devices should be probed first because they are at fixed
locations and cannot be turned off. ISA PNP devices, on the other
hand, can be turned off and often can be flexible in the resources
they use. Probe them last, as always.
people have reported problems (stickyness, aiming difficulty) which is proving
difficult to fix, so this will default to disable until sometime after 5.3R.
To enable Synaptics support, set the 'hw.psm.synaptics_support=1' tunable.
MT5 candidate.
Approved by: njl
because it was mostly irrelevant - except for the silly BIOS_PADDRTOVADDR
etc macros. Along the way of working around this, I missed a few things.
* Make syscons properly inherit the bios capslock/shiftlock/etc state like
i386 does. Note that we cannot inherit the bios key repeat rate because
that requires a bios call (which is impossible for us).
* Give syscons the ability to beep on amd64. Oops.
While here, make bios.c compile and add it to files.amd64.
and which takes a M_WAITOK/M_NOWAIT flag argument.
Add compatibility isa_dmainit() macro which whines loudly if
isa_dma_init() fails.
Problem uncovered by: tegge
o Remove PSM_SYNCERR_THRESHOLD1. This value specified how many sync
errors were required before the mouse is re-initialised.
Re-initialisation is now done after (packetsize * 2) sync errors as
things aren't likely to improve after that.
o Reset lastinputerror when re-initialisation occurs. We don't want
to continue to drop data after re-initialisation.
o Count the number of failed packets independently of the syncerrors
statistic. syncerrors is useful for recovering sync within a single
packet. pkterrors allows us to detect when the mouse changes its
packet mode due to some external event (e.g. KVM switch).
o Reinitialize the mouse if we see more than psmpkterrthresh errors
during the validation period. The validation period begins as soon
as a sync error is detected and continues until psmerrsecs/msecs
time has elapsed. The defaults for these two values force a reset
if we see two packet errors in a 2 second period. This allows rapid
detection of packet framing errors caused by the mouse changing packet
modes.
o Export psmpkterrthresh as a sysctl
o Export psmloglevel as a sysctl.
o Enable more debugging code to be enabled at runtime via psmloglevel.
o Simplify verbose conditioned loging by using a VLOG macro.
o Add several comments describing the sync recovery algorithm of
this driver.
Large Portions by: Brian Somers <brian@Awfulhak.org>
Inspired and Frustrated by: Belkin KVMs
Reviewed by: njl, philip
data packet is received from the mouse. In the case of many KVM's,
this avoids a bug in their mouse emulation that sends back incorrect
sync when you explicitly request a data packet from the mouse. Without
this change, you must force the driver into stock PS/2 mode or be flooded
with a never ending stream of "out of sync" messages on these KVMs.
Approved by: re
o Change the motion calculation to result in
a more reasonable speed of motion
This should fix the 'aiming' problems people have reported. It also
mitigates (but doesn't completely solve) the 'stalling' problems at
very low speeds.
Tested by: many subscribers to -current
Approved by: njl
o Catch 'taps' as button presses
o One finger sends button1, two fingers send button3,
three fingers send button2 (double-click)
Tested by: many subscribers to -current
Approved by: njl
o Handle the 'up/down' buttons some touchpads have as
a z-axis (scrollwheel) as recommended by the specs
o Report the buttons as button4 and button5 instead
of button2 and button4, button2 can be emulated by
pressing button1 and button3 simultaneously. This
allows one to use the two extra buttons for other
purposes if one so desires.
Tested by: many subscribers to -current
Approved by: njl
o Clean up whitespace and comments in the
enable_synaptics() probing function
o Only use (and rely on) the extended capability
bits when we are told they actually exist
o Partly ignore the (possibly dated?) part of the
specification about the mode byte so that we
can support 'guest devices' too.
Tested by: many subscribers to -current
Approved by: njl
submitted version with style cleanups and changes to comments. I also
modified the ioctl interface. This version only has one ioctl (to get
the Synaptics-specific config parameters) since this is the only
information a user might want.
Submitted by: Arne Schwabe <arne -at- rfc2549.org>
a problem that could also be fixed differently without reverting previous
attempts to fix DELAY while the debugger is active (rev 1.204). The bug
was that the i8254 implements a countdown timer, while for (k)db_active
a countup timer was implemented. This resulted in premature termination
and consequently the breakage of DELAY. The fix (relative to rev 1.211)
is to implement a countdown timer for the kdb_active case. As such the
ability to step clock initialization is preserved and DELAY does what is
expected of it.
Blushed: bde :-)
Submitted by: bde
debugger is not active. The fixes breakages of DELAY() when
running in the debugger, because not calling getit() when the
debugger is active yields a DELAY that doesn't.
repocopied. Soon there will be additional bus attachments and
specialization for isa, acpi and pccard (and maybe pc98's cbus).
This was approved by nate, joerg and myself. bde dissented on the new
location, but appeared to be OK after some discussion.
correct interrupt source.
- Cache a pointer to the i8254_intsrc's pending method to avoid several
pointer indirections in i8254_get_timecount().
Reported by: bde
scenario into #ifdef DEBUG. This makes my cluster with Belkin
KVM switch completely usable, even if the KVM switch and mouse
get a bit confused sometimes.
Without this, when the mouse gets confused, all sorts of crud
gets spammed all over the screen. With this, the mouse may appear
dead for a second or three, but it recovers silently.
Introduce d_version field in struct cdevsw, this must always be
initialized to D_VERSION.
Flip sense of D_NOGIANT flag to D_NEEDGIANT, this involves removing
four D_NOGIANT flags and adding 145 D_NEEDGIANT flags.
Free approx 86 major numbers with a mostly automatically generated patch.
A number of strategic drivers have been left behind by caution, and a few
because they still (ab)use their major number.
