src/sys/dev/speaker, branch release/8.1.0

Change the type of uio_resid member of struct uio from int to ssize_t.

2009-06-25T18:46:30Z

Note that this does not actually enable full-range i/o requests for 64 architectures, and is done now to update KBI only. Tested by: pho Reviewed by: jhb, bde (as part of the review of the bigger patch)

Remove unneeded checks of device unit number from speaker(4).

2009-01-25T09:20:59Z

Calls on the cdev can only be made on existing devices. This means we don't have to check the value of dev2unit().

Replace all calls to minor() with dev2unit().

2008-09-27T08:51:18Z

After I removed all the unit2minor()/minor2unit() calls from the kernel yesterday, I realised calling minor() everywhere is quite confusing. Character devices now only have the ability to store a unit number, not a minor number. Remove the confusion by using dev2unit() everywhere. This commit could also be considered as a bug fix. A lot of drivers call minor(), while they should actually be calling dev2unit(). In -CURRENT this isn't a problem, but it turns out we never had any problem reports related to that issue in the past. I suspect not many people connect more than 256 pieces of the same hardware. Reviewed by: kib

Move speaker a lot closer to style(9)

2008-05-15T01:22:48Z

Submitted by: Martin Voros

Make speaker a pseudo device driver instead of attaching to a PnP id.

2008-03-26T21:33:41Z

If somebody cleaned this code up to proper style(9), it could become a great educational starting point for aspiring kernel hackers.

The "free-lance" timer in the i8254 is only used for the speaker

2008-03-26T20:09:21Z

these days, so de-generalize the acquire_timer/release_timer api to just deal with speakers. The new (optional) MD functions are: timer_spkr_acquire() timer_spkr_release() and timer_spkr_setfreq() the last of which configures the timer to generate a tone of a given frequency, in Hz instead of 1/1193182th of seconds. Drop entirely timer2 on pc98, it is not used anywhere at all. Move sysbeep() to kern/tty_cons.c and use the timer_spkr*() if they exist, and do nothing otherwise. Remove prototypes and empty acquire-/release-timer() and sysbeep() functions from the non-beeping archs. This eliminate the need for the speaker driver to know about i8254frequency at all. In theory this makes the speaker driver MI, contingent on the timer_spkr_*() functions existing but the driver does not know this yet and still attaches to the ISA bus. Syscons is more tricky, in one function, sc_tone(), it knows the hz and things are just fine. In the other function, sc_bell() it seems to get the period from the KDMKTONE ioctl in terms if 1/1193182th second, so we hardcode the 1193182 and leave it at that. It's probably not important. Change a few other sysbeep() uses which obviously knew that the argument was in terms of i8254 frequency, and leave alone those that look like people thought sysbeep() took frequency in hertz. This eliminates the knowledge of i8254_freq from all but the actual clock.c code and the prof_machdep.c on amd64 and i386, where I think it would be smart to ask for help from the timecounters anyway [TBD].

Rename timer0_max_count to i8254_max_count.

2008-03-26T15:03:24Z

Rename timer0_real_max_count to i8254_real_max_count and make it static. Rename timer_freq to i8254_freq and make it a loader tunable.

Now that tone & delay times are correct (independent of hz), adjust

2007-06-04T09:27:13Z

playtone() so that it uses times of 1/100ths of a second. Now 'time echo T60ABC >/dev/speaker' takes ~3 seconds. MFC after: 2 weeks Problem noted by: dwmalone

Speaker durations are specified in 1/100ths of a second according to

2007-06-04T08:33:18Z

spkr(4). PR: 70610, 67995 Submitted by: dada at sbox dot tugraz dot at (modulo one fix) MFC after: 2 weeks

Add /dev/speaker support to amd64.

2005-11-11T09:57:32Z

The following repo-copies were made (by Mark Murray): sys/i386/isa/spkr.c -> sys/dev/speaker/spkr.c sys/i386/include/speaker.h -> sys/dev/speaker/speaker.h share/man/man4/man4.i386/spkr.4 -> share/man/man4/spkr.4