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/* $OpenBSD: mediabay.c,v 1.6 2013/11/18 20:21:51 deraadt Exp $ */
/* $NetBSD: mediabay.c,v 1.9 2003/07/15 02:43:29 lukem Exp $ */
/*-
* Copyright (C) 1999 Tsubai Masanari. 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.
* 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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/param.h>
#include <sys/device.h>
#include <sys/kernel.h>
#include <sys/kthread.h>
#include <sys/systm.h>
#include <uvm/uvm_extern.h>
#include <dev/ofw/openfirm.h>
#include <machine/autoconf.h>
#include <machine/pio.h>
struct mediabay_softc {
struct device sc_dev;
int sc_node;
u_int *sc_addr;
u_int *sc_fcr;
u_int sc_baseaddr;
bus_space_tag_t sc_iot;
bus_dma_tag_t sc_dmat;
struct device *sc_content;
struct proc *sc_kthread;
};
void mediabay_attach(struct device *, struct device *, void *);
int mediabay_match(struct device *, void *, void *);
int mediabay_print(void *, const char *);
void mediabay_attach_content(struct mediabay_softc *);
int mediabay_intr(void *);
void mediabay_create_kthread(void *);
void mediabay_kthread(void *);
struct cfattach mediabay_ca = {
sizeof(struct mediabay_softc), mediabay_match, mediabay_attach
};
struct cfdriver mediabay_cd = {
NULL, "mediabay", DV_DULL
};
#ifdef MEDIABAY_DEBUG
# define DPRINTF printf
#else
# define DPRINTF while (0) printf
#endif
#define FCR_MEDIABAY_RESET 0x00000002
#define FCR_MEDIABAY_IDE_ENABLE 0x00000008
#define FCR_MEDIABAY_FD_ENABLE 0x00000010
#define FCR_MEDIABAY_ENABLE 0x00000080
#define FCR_MEDIABAY_CD_POWER 0x00800000
#define MEDIABAY_ID(x) (((x) >> 12) & 0xf)
#define MEDIABAY_ID_FD 0
#define MEDIABAY_ID_CD 3
#define MEDIABAY_ID_NONE 7
int
mediabay_match(parent, v, aux)
struct device *parent;
void *v;
void *aux;
{
struct confargs *ca = aux;
if (strcmp(ca->ca_name, "media-bay") == 0 &&
ca->ca_nintr >= 4 && ca->ca_nreg >= 8)
return 1;
return 0;
}
/*
* Attach all the sub-devices we can find
*/
void
mediabay_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct mediabay_softc *sc = (struct mediabay_softc *)self;
struct confargs *ca = aux;
int irq, type;
ca->ca_reg[0] += ca->ca_baseaddr;
sc->sc_addr = mapiodev(ca->ca_reg[0], PAGE_SIZE);
sc->sc_fcr = sc->sc_addr + 1;
sc->sc_node = ca->ca_node;
sc->sc_baseaddr = ca->ca_baseaddr;
sc->sc_iot = ca->ca_iot;
sc->sc_dmat = ca->ca_dmat;
irq = ca->ca_intr[0];
type = IST_LEVEL;
if (ca->ca_nintr == 8 && ca->ca_intr[1] == 0)
type = IST_EDGE;
printf(" irq %d\n", irq);
mac_intr_establish(parent, irq, type, IPL_BIO, mediabay_intr, sc,
"mediabay");
kthread_create_deferred(mediabay_create_kthread, sc);
sc->sc_content = NULL;
if (MEDIABAY_ID(in32rb(sc->sc_addr)) != MEDIABAY_ID_NONE)
mediabay_attach_content(sc);
}
void
mediabay_attach_content(sc)
struct mediabay_softc *sc;
{
int child;
u_int fcr;
struct device *content;
struct confargs ca;
u_int reg[20], intr[5];
char name[32];
fcr = in32rb(sc->sc_fcr);
fcr |= FCR_MEDIABAY_ENABLE | FCR_MEDIABAY_RESET;
out32rb(sc->sc_fcr, fcr);
delay(50000);
fcr &= ~FCR_MEDIABAY_RESET;
out32rb(sc->sc_fcr, fcr);
delay(50000);
fcr |= FCR_MEDIABAY_IDE_ENABLE | FCR_MEDIABAY_CD_POWER;
out32rb(sc->sc_fcr, fcr);
delay(50000);
for (child = OF_child(sc->sc_node); child; child = OF_peer(child)) {
bzero(name, sizeof(name));
if (OF_getprop(child, "name", name, sizeof(name)) == -1)
continue;
ca.ca_name = name;
ca.ca_node = child;
ca.ca_baseaddr = sc->sc_baseaddr;
ca.ca_iot = sc->sc_iot;
ca.ca_dmat = sc->sc_dmat;
ca.ca_nreg = OF_getprop(child, "reg", reg, sizeof(reg));
ca.ca_nintr = OF_getprop(child, "AAPL,interrupts", intr,
sizeof(intr));
if (ca.ca_nintr == -1)
ca.ca_nintr = OF_getprop(child, "interrupts", intr,
sizeof(intr));
ca.ca_reg = reg;
ca.ca_intr = intr;
content = config_found(&sc->sc_dev, &ca, mediabay_print);
if (content) {
sc->sc_content = content;
return;
}
}
/* No devices found. Disable media-bay. */
fcr &= ~(FCR_MEDIABAY_ENABLE | FCR_MEDIABAY_IDE_ENABLE |
FCR_MEDIABAY_CD_POWER | FCR_MEDIABAY_FD_ENABLE);
out32rb(sc->sc_fcr, fcr);
}
int
mediabay_print(aux, mediabay)
void *aux;
const char *mediabay;
{
struct confargs *ca = aux;
if (mediabay == NULL && ca->ca_nreg > 0)
printf(" offset 0x%x", ca->ca_reg[0]);
return QUIET;
}
int
mediabay_intr(v)
void *v;
{
struct mediabay_softc *sc = v;
wakeup(&sc->sc_kthread);
return 1;
}
void
mediabay_create_kthread(v)
void *v;
{
struct mediabay_softc *sc = v;
kthread_create(mediabay_kthread, sc, &sc->sc_kthread,
sc->sc_dev.dv_xname);
}
void
mediabay_kthread(v)
void *v;
{
struct mediabay_softc *sc = v;
u_int x, fcr;
sleep:
tsleep(&sc->sc_kthread, PRIBIO, "mbayev", 0);
/* sleep 0.25 sec */
tsleep(mediabay_kthread, PRIBIO, "mbayev", hz/4);
DPRINTF("%s: ", sc->sc_dev.dv_xname);
x = in32rb(sc->sc_addr);
switch (MEDIABAY_ID(x)) {
case MEDIABAY_ID_NONE:
DPRINTF("removed\n");
if (sc->sc_content != NULL) {
config_detach(sc->sc_content, DETACH_FORCE);
DPRINTF("%s: detach done\n", sc->sc_dev.dv_xname);
sc->sc_content = NULL;
/* disable media-bay */
fcr = in32rb(sc->sc_fcr);
fcr &= ~(FCR_MEDIABAY_ENABLE |
FCR_MEDIABAY_IDE_ENABLE |
FCR_MEDIABAY_CD_POWER |
FCR_MEDIABAY_FD_ENABLE);
out32rb(sc->sc_fcr, fcr);
}
break;
case MEDIABAY_ID_FD:
DPRINTF("FD inserted\n");
break;
case MEDIABAY_ID_CD:
DPRINTF("CD inserted\n");
if (sc->sc_content == NULL)
mediabay_attach_content(sc);
break;
default:
printf("unknown event (0x%x)\n", x);
}
goto sleep;
}
/* PBG3: 0x7025X0c0 */
/* 2400: 0x0070X0a8 */
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