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- /*-
- * SPDX-License-Identifier: BSD-2-Clause
- *
- * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer as
- * the first lines of this file unmodified.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
- #include <sys/cdefs.h>
- #include "opt_syscons.h"
- #include <sys/param.h>
- #include <sys/systm.h>
- #include <sys/kernel.h>
- #include <sys/module.h>
- #include <sys/bus.h>
- #include <sys/cons.h>
- #include <sys/kbio.h>
- #include <sys/consio.h>
- #include <sys/sysctl.h>
- #if defined(__i386__) || defined(__amd64__)
- #include <machine/clock.h>
- #include <machine/md_var.h>
- #include <machine/pc/bios.h>
- #include <vm/vm.h>
- #include <vm/pmap.h>
- #include <vm/vm_param.h>
- #define BIOS_CLKED (1 << 6)
- #define BIOS_NLKED (1 << 5)
- #define BIOS_SLKED (1 << 4)
- #define BIOS_ALKED 0
- #endif
- #include <dev/syscons/syscons.h>
- #include <isa/isavar.h>
- static sc_softc_t main_softc;
- static void
- scidentify(driver_t *driver, device_t parent)
- {
- BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "sc", 0);
- }
- static int
- scprobe(device_t dev)
- {
- /* No pnp support */
- if (isa_get_vendorid(dev))
- return (ENXIO);
- device_set_desc(dev, "System console");
- return (sc_probe_unit(device_get_unit(dev), device_get_flags(dev)));
- }
- static int
- scattach(device_t dev)
- {
- return (sc_attach_unit(device_get_unit(dev), device_get_flags(dev) |
- SC_AUTODETECT_KBD));
- }
- int
- sc_max_unit(void)
- {
- return (devclass_get_maxunit(devclass_find("sc")));
- }
- sc_softc_t
- *sc_get_softc(int unit, int flags)
- {
- sc_softc_t *sc;
- if (unit < 0)
- return (NULL);
- if ((flags & SC_KERNEL_CONSOLE) != 0) {
- /* FIXME: clear if it is wired to another unit! */
- sc = &main_softc;
- } else {
- sc = device_get_softc(devclass_get_device(devclass_find("sc"),
- unit));
- if (sc == NULL)
- return (NULL);
- }
- sc->unit = unit;
- if ((sc->flags & SC_INIT_DONE) == 0) {
- sc->adapter = -1;
- sc->cursor_char = SC_CURSOR_CHAR;
- sc->mouse_char = SC_MOUSE_CHAR;
- }
- return (sc);
- }
- sc_softc_t
- *sc_find_softc(struct video_adapter *adp, struct keyboard *kbd)
- {
- devclass_t dc;
- sc_softc_t *sc;
- int i;
- int units;
- sc = &main_softc;
- if ((adp == NULL || adp == sc->adp) &&
- (kbd == NULL || kbd == sc->kbd))
- return (sc);
- dc = devclass_find("sc");
- units = devclass_get_maxunit(dc);
- for (i = 0; i < units; ++i) {
- sc = device_get_softc(devclass_get_device(dc, i));
- if (sc == NULL)
- continue;
- if ((adp == NULL || adp == sc->adp) &&
- (kbd == NULL || kbd == sc->kbd))
- return (sc);
- }
- return (NULL);
- }
- int
- sc_get_cons_priority(int *unit, int *flags)
- {
- const char *at;
- int f, u;
- *unit = -1;
- for (u = 0; u < 16; u++) {
- if (resource_disabled(SC_DRIVER_NAME, u))
- continue;
- if (resource_string_value(SC_DRIVER_NAME, u, "at", &at) != 0)
- continue;
- if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0)
- f = 0;
- if (f & SC_KERNEL_CONSOLE) {
- /* the user designates this unit to be the console */
- *unit = u;
- *flags = f;
- break;
- }
- if (*unit < 0) {
- /* ...otherwise remember the first found unit */
- *unit = u;
- *flags = f;
- }
- }
- if (*unit < 0) {
- *unit = 0;
- *flags = 0;
- }
- #if 0
- return ((*flags & SC_KERNEL_CONSOLE) != 0 ? CN_INTERNAL : CN_NORMAL);
- #endif
- return (CN_INTERNAL);
- }
- void
- sc_get_bios_values(bios_values_t *values)
- {
- #if defined(__i386__) || defined(__amd64__)
- uint8_t shift;
- shift = *(uint8_t *)BIOS_PADDRTOVADDR(0x417);
- values->shift_state = ((shift & BIOS_CLKED) != 0 ? CLKED : 0) |
- ((shift & BIOS_NLKED) != 0 ? NLKED : 0) |
- ((shift & BIOS_SLKED) != 0 ? SLKED : 0) |
- ((shift & BIOS_ALKED) != 0 ? ALKED : 0);
- #endif
- values->bell_pitch = BELL_PITCH;
- }
- int
- sc_tone(int herz)
- {
- #if defined(HAS_TIMER_SPKR)
- if (herz) {
- if (timer_spkr_acquire())
- return (EBUSY);
- timer_spkr_setfreq(herz);
- } else
- timer_spkr_release();
- #endif
- return (0);
- }
- static device_method_t sc_methods[] = {
- DEVMETHOD(device_identify, scidentify),
- DEVMETHOD(device_probe, scprobe),
- DEVMETHOD(device_attach, scattach),
- { 0, 0 }
- };
- static driver_t sc_driver = {
- SC_DRIVER_NAME,
- sc_methods,
- sizeof(sc_softc_t),
- };
- DRIVER_MODULE(sc, isa, sc_driver, 0, 0);
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