8a9bc9c03b
disabled. - Change the apm driver to match the acpi driver's behavior by checking to see if the device is disabled in the identify routine instead of in the probe routine. This way if the device is disabled it is never created. Note that a few places (ips(4), Alpha SMP) used "disable" instead of "disabled" for their hint names, and these hints must be changed to "disabled". If this is a big problem, resource_disabled() can always be changed to honor both names.
293 lines
6.7 KiB
C
293 lines
6.7 KiB
C
/*-
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* Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer as
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* the first lines of this file unmodified.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_syscons.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/cons.h>
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#include <sys/kbio.h>
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#include <sys/consio.h>
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#include <sys/sysctl.h>
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#ifdef __i386__
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#include <machine/clock.h>
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#include <machine/md_var.h>
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#include <machine/pc/bios.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <i386/isa/timerreg.h>
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#define BIOS_CLKED (1 << 6)
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#define BIOS_NLKED (1 << 5)
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#define BIOS_SLKED (1 << 4)
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#define BIOS_ALKED 0
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#endif /* __i386__ */
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#include <dev/syscons/syscons.h>
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#include <isa/isareg.h>
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#include <isa/isavar.h>
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static devclass_t sc_devclass;
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static sc_softc_t main_softc;
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#ifdef SC_NO_SUSPEND_VTYSWITCH
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static int sc_no_suspend_vtswitch = 1;
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#else
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static int sc_no_suspend_vtswitch = 0;
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#endif
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static int sc_cur_scr;
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TUNABLE_INT("hw.syscons.sc_no_suspend_vtswitch", (int *)&sc_no_suspend_vtswitch);
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SYSCTL_DECL(_hw_syscons);
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SYSCTL_INT(_hw_syscons, OID_AUTO, sc_no_suspend_vtswitch, CTLFLAG_RW,
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&sc_no_suspend_vtswitch, 0, "Disable VT switch before suspend.");
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static void
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scidentify (driver_t *driver, device_t parent)
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{
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BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "sc", 0);
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}
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static int
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scprobe(device_t dev)
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{
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/* No pnp support */
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if (isa_get_vendorid(dev))
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return (ENXIO);
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device_set_desc(dev, "System console");
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return sc_probe_unit(device_get_unit(dev), device_get_flags(dev));
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}
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static int
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scattach(device_t dev)
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{
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return sc_attach_unit(device_get_unit(dev), device_get_flags(dev));
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}
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static int
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scsuspend(device_t dev)
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{
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int retry = 10;
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static int dummy;
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sc_softc_t *sc;
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sc = &main_softc;
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sc_cur_scr = sc->cur_scp->index;
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if (sc_no_suspend_vtswitch)
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return (0);
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do {
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sc_switch_scr(sc, 0);
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if (!sc->switch_in_progress) {
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break;
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}
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tsleep(&dummy, 0, "scsuspend", 100);
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} while (retry--);
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return (0);
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}
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static int
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scresume(device_t dev)
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{
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sc_softc_t *sc;
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if (sc_no_suspend_vtswitch)
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return (0);
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sc = &main_softc;
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sc_switch_scr(sc, sc_cur_scr);
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return (0);
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}
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int
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sc_max_unit(void)
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{
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return devclass_get_maxunit(sc_devclass);
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}
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sc_softc_t
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*sc_get_softc(int unit, int flags)
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{
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sc_softc_t *sc;
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if (unit < 0)
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return NULL;
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if (flags & SC_KERNEL_CONSOLE) {
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/* FIXME: clear if it is wired to another unit! */
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sc = &main_softc;
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} else {
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sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, unit));
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if (sc == NULL)
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return NULL;
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}
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sc->unit = unit;
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if (!(sc->flags & SC_INIT_DONE)) {
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sc->keyboard = -1;
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sc->adapter = -1;
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sc->cursor_char = SC_CURSOR_CHAR;
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sc->mouse_char = SC_MOUSE_CHAR;
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}
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return sc;
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}
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sc_softc_t
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*sc_find_softc(struct video_adapter *adp, struct keyboard *kbd)
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{
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sc_softc_t *sc;
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int units;
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int i;
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sc = &main_softc;
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if (((adp == NULL) || (adp == sc->adp))
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&& ((kbd == NULL) || (kbd == sc->kbd)))
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return sc;
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units = devclass_get_maxunit(sc_devclass);
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for (i = 0; i < units; ++i) {
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sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, i));
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if (sc == NULL)
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continue;
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if (((adp == NULL) || (adp == sc->adp))
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&& ((kbd == NULL) || (kbd == sc->kbd)))
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return sc;
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}
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return NULL;
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}
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int
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sc_get_cons_priority(int *unit, int *flags)
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{
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const char *at;
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int u, f;
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*unit = -1;
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for (u = 0; u < 16; u++) {
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if (resource_disabled(SC_DRIVER_NAME, u))
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continue;
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if (resource_string_value(SC_DRIVER_NAME, u, "at", &at) != 0)
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continue;
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if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0)
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f = 0;
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if (f & SC_KERNEL_CONSOLE) {
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/* the user designates this unit to be the console */
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*unit = u;
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*flags = f;
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break;
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}
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if (*unit < 0) {
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/* ...otherwise remember the first found unit */
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*unit = u;
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*flags = f;
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}
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}
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if (*unit < 0)
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return CN_DEAD;
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#if 0
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return ((*flags & SC_KERNEL_CONSOLE) ? CN_INTERNAL : CN_NORMAL);
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#endif
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return CN_INTERNAL;
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}
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void
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sc_get_bios_values(bios_values_t *values)
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{
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#ifdef __i386__
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u_int8_t shift;
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values->cursor_start = *(u_int8_t *)BIOS_PADDRTOVADDR(0x461);
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values->cursor_end = *(u_int8_t *)BIOS_PADDRTOVADDR(0x460);
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shift = *(u_int8_t *)BIOS_PADDRTOVADDR(0x417);
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values->shift_state = ((shift & BIOS_CLKED) ? CLKED : 0)
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| ((shift & BIOS_NLKED) ? NLKED : 0)
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| ((shift & BIOS_SLKED) ? SLKED : 0)
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| ((shift & BIOS_ALKED) ? ALKED : 0);
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values->bell_pitch = BELL_PITCH;
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#else /* !__i386__ */
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values->cursor_start = 0;
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values->cursor_end = 32;
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values->shift_state = 0;
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values->bell_pitch = BELL_PITCH;
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#endif /* __i386__ */
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}
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int
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sc_tone(int herz)
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{
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#ifdef __i386__
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int pitch;
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if (herz) {
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/* set command for counter 2, 2 byte write */
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if (acquire_timer2(TIMER_16BIT | TIMER_SQWAVE))
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return EBUSY;
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/* set pitch */
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pitch = timer_freq/herz;
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outb(TIMER_CNTR2, pitch);
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outb(TIMER_CNTR2, pitch >> 8);
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/* enable counter 2 output to speaker */
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outb(IO_PPI, inb(IO_PPI) | 3);
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} else {
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/* disable counter 2 output to speaker */
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outb(IO_PPI, inb(IO_PPI) & 0xFC);
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release_timer2();
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}
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#endif /* __i386__ */
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return 0;
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}
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static device_method_t sc_methods[] = {
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DEVMETHOD(device_identify, scidentify),
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DEVMETHOD(device_probe, scprobe),
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DEVMETHOD(device_attach, scattach),
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DEVMETHOD(device_suspend, scsuspend),
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DEVMETHOD(device_resume, scresume),
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{ 0, 0 }
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};
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static driver_t sc_driver = {
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SC_DRIVER_NAME,
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sc_methods,
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sizeof(sc_softc_t),
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};
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DRIVER_MODULE(sc, isa, sc_driver, sc_devclass, 0, 0);
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