255 lines
6.7 KiB
C
255 lines
6.7 KiB
C
/* $NetBSD: auxio.c,v 1.9 2002/10/02 16:02:17 thorpej Exp $ */
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/*
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* Copyright (c) 2000, 2001 Matthew R. Green
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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.
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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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* AUXIO registers support on the sbus & ebus2, used for the floppy driver
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* and to control the system LED, for the BLINK option.
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*/
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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/callout.h>
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#include <sys/errno.h>
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#include <sys/device.h>
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#include <sys/malloc.h>
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#include <machine/autoconf.h>
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#include <machine/cpu.h>
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#include <dev/ebus/ebusreg.h>
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#include <dev/ebus/ebusvar.h>
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#include <sparc64/dev/sbusvar.h>
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#include <sparc64/dev/auxioreg.h>
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/*
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* on sun4u, auxio exists with one register (LED) on the sbus, and 5
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* registers on the ebus2 (pci) (LED, PCIMODE, FREQUENCY, SCSI
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* OSCILLATOR, and TEMP SENSE.
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*/
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struct auxio_softc {
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struct device sc_dev;
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/* parent's tag */
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bus_space_tag_t sc_tag;
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/* handles to the various auxio regsiter sets */
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bus_space_handle_t sc_led;
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bus_space_handle_t sc_pci;
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bus_space_handle_t sc_freq;
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bus_space_handle_t sc_scsi;
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bus_space_handle_t sc_temp;
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int sc_flags;
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#define AUXIO_LEDONLY 0x1
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#define AUXIO_EBUS 0x2
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#define AUXIO_SBUS 0x4
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};
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#define AUXIO_ROM_NAME "auxio"
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void auxio_attach_common(struct auxio_softc *);
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int auxio_ebus_match(struct device *, struct cfdata *, void *);
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void auxio_ebus_attach(struct device *, struct device *, void *);
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int auxio_sbus_match(struct device *, struct cfdata *, void *);
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void auxio_sbus_attach(struct device *, struct device *, void *);
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CFATTACH_DECL(auxio_ebus, sizeof(struct auxio_softc),
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auxio_ebus_match, auxio_ebus_attach, NULL, NULL);
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CFATTACH_DECL(auxio_sbus, sizeof(struct auxio_softc),
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auxio_sbus_match, auxio_sbus_attach, NULL, NULL);
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#ifdef BLINK
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static struct callout blink_ch = CALLOUT_INITIALIZER;
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static void auxio_blink(void *);
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static void
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auxio_blink(x)
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void *x;
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{
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struct auxio_softc *sc = x;
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int s;
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u_int32_t led;
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s = splhigh();
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if (sc->sc_flags & AUXIO_EBUS)
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led = le32toh(bus_space_read_4(sc->sc_tag, sc->sc_led, 0));
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else
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led = bus_space_read_1(sc->sc_tag, sc->sc_led, 0);
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if (led & AUXIO_LED_LED)
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led = 0;
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else
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led = AUXIO_LED_LED;
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if (sc->sc_flags & AUXIO_EBUS)
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bus_space_write_4(sc->sc_tag, sc->sc_led, 0, htole32(led));
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else
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bus_space_write_1(sc->sc_tag, sc->sc_led, 0, led);
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splx(s);
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/*
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* Blink rate is:
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* full cycle every second if completely idle (loadav = 0)
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* full cycle every 2 seconds if loadav = 1
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* full cycle every 3 seconds if loadav = 2
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* etc.
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*/
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s = (((averunnable.ldavg[0] + FSCALE) * hz) >> (FSHIFT + 1));
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callout_reset(&blink_ch, s, auxio_blink, sc);
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}
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#endif
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void
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auxio_attach_common(sc)
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struct auxio_softc *sc;
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{
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#ifdef BLINK
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static int do_once = 1;
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/* only start one blinker */
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if (do_once) {
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auxio_blink(sc);
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do_once = 0;
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}
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#endif
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printf("\n");
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}
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int
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auxio_ebus_match(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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struct ebus_attach_args *ea = aux;
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return (strcmp(AUXIO_ROM_NAME, ea->ea_name) == 0);
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}
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void
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auxio_ebus_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct auxio_softc *sc = (struct auxio_softc *)self;
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struct ebus_attach_args *ea = aux;
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sc->sc_tag = ea->ea_bustag;
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if (ea->ea_nreg < 1) {
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printf(": no registers??\n");
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return;
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}
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if (ea->ea_nreg != 5) {
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printf(": not 5 (%d) registers, only setting led",
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ea->ea_nreg);
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sc->sc_flags = AUXIO_LEDONLY|AUXIO_EBUS;
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} else if (ea->ea_nvaddr == 5) {
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sc->sc_flags = AUXIO_EBUS;
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sparc_promaddr_to_handle(sc->sc_tag,
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ea->ea_vaddr[1], &sc->sc_pci);
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sparc_promaddr_to_handle(sc->sc_tag,
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ea->ea_vaddr[2], &sc->sc_freq);
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sparc_promaddr_to_handle(sc->sc_tag,
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ea->ea_vaddr[3], &sc->sc_scsi);
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sparc_promaddr_to_handle(sc->sc_tag,
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ea->ea_vaddr[4], &sc->sc_temp);
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} else {
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sc->sc_flags = AUXIO_EBUS;
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bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[1]),
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ea->ea_reg[1].size, 0, &sc->sc_pci);
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bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[2]),
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ea->ea_reg[2].size, 0, &sc->sc_freq);
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bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[3]),
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ea->ea_reg[3].size, 0, &sc->sc_scsi);
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bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[4]),
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ea->ea_reg[4].size, 0, &sc->sc_temp);
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}
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if (ea->ea_nvaddr > 0) {
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sparc_promaddr_to_handle(sc->sc_tag,
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ea->ea_vaddr[0], &sc->sc_led);
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} else {
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bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[0]),
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ea->ea_reg[0].size, 0, &sc->sc_led);
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}
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auxio_attach_common(sc);
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}
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int
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auxio_sbus_match(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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struct sbus_attach_args *sa = aux;
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return (strcmp(AUXIO_ROM_NAME, sa->sa_name) == 0);
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}
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void
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auxio_sbus_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct auxio_softc *sc = (struct auxio_softc *)self;
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struct sbus_attach_args *sa = aux;
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sc->sc_tag = sa->sa_bustag;
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if (sa->sa_nreg < 1) {
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printf(": no registers??\n");
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return;
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}
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if (sa->sa_nreg != 1) {
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printf(": not 1 (%d/%d) registers??", sa->sa_nreg,
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sa->sa_npromvaddrs);
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return;
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}
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/* sbus auxio only has one set of registers */
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sc->sc_flags = AUXIO_LEDONLY|AUXIO_SBUS;
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if (sa->sa_npromvaddrs > 0) {
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sbus_promaddr_to_handle(sc->sc_tag,
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sa->sa_promvaddr, &sc->sc_led);
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} else {
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sbus_bus_map(sc->sc_tag, sa->sa_slot, sa->sa_offset,
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sa->sa_size, 0, &sc->sc_led);
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}
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auxio_attach_common(sc);
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}
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