283 lines
7.0 KiB
C
283 lines
7.0 KiB
C
/* $NetBSD: mediabay.c,v 1.12 2006/12/10 02:41:30 macallan Exp $ */
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/*-
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* Copyright (C) 1999 Tsubai Masanari. 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, 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
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* OF 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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__KERNEL_RCSID(0, "$NetBSD: mediabay.c,v 1.12 2006/12/10 02:41:30 macallan Exp $");
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/kernel.h>
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#include <sys/kthread.h>
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#include <sys/systm.h>
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#include <uvm/uvm_extern.h>
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#include <dev/ofw/openfirm.h>
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#include <machine/autoconf.h>
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#include <machine/pio.h>
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struct mediabay_softc {
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struct device sc_dev;
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int sc_node;
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u_int *sc_addr;
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u_int *sc_fcr;
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u_int sc_baseaddr;
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struct device *sc_content;
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struct proc *sc_kthread;
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};
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void mediabay_attach __P((struct device *, struct device *, void *));
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int mediabay_match __P((struct device *, struct cfdata *, void *));
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int mediabay_print __P((void *, const char *));
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void mediabay_attach_content __P((struct mediabay_softc *));
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int mediabay_intr __P((void *));
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void mediabay_create_kthread __P((void *));
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void mediabay_kthread __P((void *));
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CFATTACH_DECL(mediabay, sizeof(struct mediabay_softc),
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mediabay_match, mediabay_attach, NULL, NULL);
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#ifdef MEDIABAY_DEBUG
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# define DPRINTF printf
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#else
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# define DPRINTF while (0) printf
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#endif
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#define FCR_MEDIABAY_RESET 0x00000002
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#define FCR_MEDIABAY_IDE_ENABLE 0x00000008
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#define FCR_MEDIABAY_FD_ENABLE 0x00000010
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#define FCR_MEDIABAY_ENABLE 0x00000080
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#define FCR_MEDIABAY_CD_POWER 0x00800000
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#define MEDIABAY_ID(x) (((x) >> 12) & 0xf)
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#define MEDIABAY_ID_FD 0
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#define MEDIABAY_ID_CD 3
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#define MEDIABAY_ID_NONE 7
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int
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mediabay_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 confargs *ca = aux;
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if (strcmp(ca->ca_name, "media-bay") == 0)
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return 1;
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return 0;
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}
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/*
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* Attach all the sub-devices we can find
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*/
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void
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mediabay_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 mediabay_softc *sc = (struct mediabay_softc *)self;
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struct confargs *ca = aux;
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int irq, itype;
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ca->ca_reg[0] += ca->ca_baseaddr;
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sc->sc_addr = mapiodev(ca->ca_reg[0], PAGE_SIZE);
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sc->sc_fcr = sc->sc_addr + 1;
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sc->sc_node = ca->ca_node;
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sc->sc_baseaddr = ca->ca_baseaddr;
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irq = ca->ca_intr[0];
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itype = IST_LEVEL;
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if (ca->ca_nintr == 8 && ca->ca_intr[1] == 0)
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itype = IST_EDGE;
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printf(" irq %d %s\n", irq, intr_typename(itype));
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intr_establish(irq, itype, IPL_BIO, mediabay_intr, sc);
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kthread_create(mediabay_create_kthread, sc);
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sc->sc_content = NULL;
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if (MEDIABAY_ID(in32rb(sc->sc_addr)) != MEDIABAY_ID_NONE)
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mediabay_attach_content(sc);
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}
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void
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mediabay_attach_content(sc)
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struct mediabay_softc *sc;
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{
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int child;
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u_int fcr;
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struct device *content;
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struct confargs ca;
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u_int reg[20], intr[5];
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char name[32];
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fcr = in32rb(sc->sc_fcr);
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/*
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* if the mediabay isn't powered up we need to wait a few seconds
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* before probing devices
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*/
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if ((fcr & (FCR_MEDIABAY_ENABLE | FCR_MEDIABAY_IDE_ENABLE
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| FCR_MEDIABAY_CD_POWER)) != (FCR_MEDIABAY_ENABLE
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| FCR_MEDIABAY_IDE_ENABLE | FCR_MEDIABAY_CD_POWER)) {
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fcr |= FCR_MEDIABAY_ENABLE | FCR_MEDIABAY_RESET;
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out32rb(sc->sc_fcr, fcr);
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delay(50000);
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fcr &= ~FCR_MEDIABAY_RESET;
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out32rb(sc->sc_fcr, fcr);
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delay(50000);
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fcr |= FCR_MEDIABAY_IDE_ENABLE | FCR_MEDIABAY_CD_POWER;
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out32rb(sc->sc_fcr, fcr);
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delay(50000);
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printf("%s: powering up...\n", sc->sc_dev.dv_xname);
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delay(2000000);
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}
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for (child = OF_child(sc->sc_node); child; child = OF_peer(child)) {
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memset(name, 0, sizeof(name));
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if (OF_getprop(child, "name", name, sizeof(name)) == -1)
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continue;
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ca.ca_name = name;
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ca.ca_node = child;
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ca.ca_baseaddr = sc->sc_baseaddr;
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ca.ca_nreg = OF_getprop(child, "reg", reg, sizeof(reg));
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ca.ca_nintr = OF_getprop(child, "AAPL,interrupts", intr,
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sizeof(intr));
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if (ca.ca_nintr == -1)
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ca.ca_nintr = OF_getprop(child, "interrupts", intr,
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sizeof(intr));
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ca.ca_reg = reg;
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ca.ca_intr = intr;
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content = config_found(&sc->sc_dev, &ca, mediabay_print);
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if (content) {
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sc->sc_content = content;
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return;
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}
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}
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/* No devices found. Disable media-bay. */
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fcr &= ~(FCR_MEDIABAY_ENABLE | FCR_MEDIABAY_IDE_ENABLE |
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FCR_MEDIABAY_CD_POWER | FCR_MEDIABAY_FD_ENABLE);
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out32rb(sc->sc_fcr, fcr);
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}
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int
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mediabay_print(aux, mediabay)
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void *aux;
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const char *mediabay;
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{
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struct confargs *ca = aux;
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if (mediabay == NULL && ca->ca_nreg > 0)
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aprint_normal(" offset 0x%x", ca->ca_reg[0]);
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return QUIET;
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}
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int
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mediabay_intr(v)
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void *v;
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{
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struct mediabay_softc *sc = v;
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wakeup(&sc->sc_kthread);
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return 1;
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}
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void
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mediabay_create_kthread(v)
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void *v;
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{
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struct mediabay_softc *sc = v;
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kthread_create1(mediabay_kthread, sc, &sc->sc_kthread, "media-bay");
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}
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void
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mediabay_kthread(v)
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void *v;
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{
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struct mediabay_softc *sc = v;
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u_int x, fcr;
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for (;;) {
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tsleep(&sc->sc_kthread, PRIBIO, "mbayev", 0);
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/* sleep 0.25 sec */
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tsleep(mediabay_kthread, PRIBIO, "mbayev", hz/4);
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DPRINTF("%s: ", sc->sc_dev.dv_xname);
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x = in32rb(sc->sc_addr);
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switch (MEDIABAY_ID(x)) {
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case MEDIABAY_ID_NONE:
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DPRINTF("removed\n");
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if (sc->sc_content != NULL) {
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config_detach(sc->sc_content, DETACH_FORCE);
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DPRINTF("%s: detach done\n",
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sc->sc_dev.dv_xname);
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sc->sc_content = NULL;
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/* disable media-bay */
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fcr = in32rb(sc->sc_fcr);
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fcr &= ~(FCR_MEDIABAY_ENABLE |
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FCR_MEDIABAY_IDE_ENABLE |
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FCR_MEDIABAY_CD_POWER |
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FCR_MEDIABAY_FD_ENABLE);
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out32rb(sc->sc_fcr, fcr);
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}
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break;
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case MEDIABAY_ID_FD:
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DPRINTF("FD inserted\n");
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break;
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case MEDIABAY_ID_CD:
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DPRINTF("CD inserted\n");
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if (sc->sc_content == NULL)
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mediabay_attach_content(sc);
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break;
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default:
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printf("unknown event (0x%x)\n", x);
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}
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}
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}
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/* PBG3: 0x7025X0c0 */
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/* 3400: 0x7070X080 */
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/* 2400: 0x0070X0a8 */
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