NetBSD-5.0.2/sys/arch/sgimips/ioc/ioc.c
/* $NetBSD: ioc.c,v 1.7 2007/10/17 19:57:05 garbled Exp $ */
/*
* Copyright (c) 2003 Christopher Sekiya
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the
* NetBSD Project. See http://www.NetBSD.org/ for
* information about NetBSD.
* 4. 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.
*/
/*
* ip20/22/24 I/O Controller (IOC)
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ioc.c,v 1.7 2007/10/17 19:57:05 garbled Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/callout.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/syslog.h>
#include <uvm/uvm_extern.h>
#include <machine/bus.h>
#include <machine/cpu.h>
#include <machine/locore.h>
#include <machine/autoconf.h>
#include <machine/machtype.h>
#include <sgimips/ioc/iocreg.h>
#include <sgimips/ioc/iocvar.h>
#include "locators.h"
struct ioc_softc {
struct device sc_dev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
};
static int ioc_match(struct device *, struct cfdata *, void *);
static void ioc_attach(struct device *, struct device *, void *);
#if defined(notyet)
static int ioc_print(void *, const char *);
static int ioc_search(struct device *, struct cfdata *,
const int *, void *);
#endif
CFATTACH_DECL(ioc, sizeof(struct ioc_softc),
ioc_match, ioc_attach, NULL, NULL);
#if defined(BLINK)
static callout_t ioc_blink_ch;
static void ioc_blink(void *);
#endif
static int
ioc_match(struct device * parent, struct cfdata * match, void *aux)
{
if (mach_type == MACH_SGI_IP22)
return 1;
return 0;
}
static void
ioc_attach(struct device * parent, struct device * self, void *aux)
{
struct ioc_softc *sc = (struct ioc_softc *) self;
struct mainbus_attach_args *maa = aux;
u_int32_t sysid;
#ifdef BLINK
callout_init(&ioc_blink_ch, 0);
#endif
sc->sc_iot = SGIMIPS_BUS_SPACE_HPC;
if (bus_space_map(sc->sc_iot, maa->ma_addr, 0,
BUS_SPACE_MAP_LINEAR, &sc->sc_ioh))
panic("ioc_attach: could not allocate memory\n");
sysid = bus_space_read_4(sc->sc_iot, sc->sc_ioh, IOC_SYSID) & 0x01;
if (sysid)
mach_subtype = MACH_SGI_IP22_FULLHOUSE;
else
mach_subtype = MACH_SGI_IP22_GUINNESS;
aprint_normal(": rev %d, machine %s, board rev %d\n",
((sysid & IOC_SYSID_CHIPREV) >> IOC_SYSID_CHIPREV_SHIFT),
(sysid & IOC_SYSID_SYSTYPE) ? "Indigo2 (Fullhouse)" :
"Indy (Guinness)",
((sysid & IOC_SYSID_BOARDREV) >> IOC_SYSID_BOARDREV_SHIFT));
/* Reset IOC */
bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_RESET,
IOC_RESET_PARALLEL | IOC_RESET_PCKBC |
IOC_RESET_EISA | IOC_RESET_ISDN |
IOC_RESET_LED_GREEN );
/*
* Set the 10BaseT port to use UTP cable, set autoselect mode for
* the ethernet interface (AUI vs. TP), set the two serial ports
* to PC mode.
*/
bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_WRITE,
IOC_WRITE_ENET_AUTO | IOC_WRITE_ENET_UTP |
IOC_WRITE_PC_UART2 | IOC_WRITE_PC_UART1);
if (mach_subtype == MACH_SGI_IP22_GUINNESS) {
bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_GCSEL, 0xff);
bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_GCREG, 0xff);
}
#if defined(BLINK)
ioc_blink(sc);
#endif
#if defined(notyet)
/*
* pckbc, zstty, and lpt should attach under the IOC. This begs the
* question of how we sort things out with ip20, which has no IOC.
* For now, we pretend that everything attaches at HPC and ignore
* the IOC.
*/
config_search_ia(ioc_search, self, "ioc", NULL);
#endif
}
#if defined(notyet)
static int
ioc_print(void *aux, const char *pnp)
{
struct ioc_attach_args *iaa = aux;
if (pnp != 0)
return QUIET;
if (iaa->iaa_offset != IOCCF_OFFSET_DEFAULT)
aprint_normal(" offset 0x%lx", iaa->iaa_offset);
if (iaa->iaa_intr != IOCCF_INTR_DEFAULT)
aprint_normal(" intr %d", iaa->iaa_intr);
return UNCONF;
}
static int
ioc_search(struct device * parent, struct cfdata * cf,
const int *ldesc, void *aux)
{
struct ioc_softc *sc = (struct ioc_softc *) parent;
struct ioc_attach_args iaa;
int tryagain;
do {
iaa.iaa_offset = cf->cf_loc[IOCCF_OFFSET];
iaa.iaa_intr = cf->cf_loc[IOCCF_INTR];
iaa.iaa_st = SGIMIPS_BUS_SPACE_HPC;
iaa.iaa_sh = sc->sc_ioh; /* XXX */
tryagain = 0;
if (config_match(parent, cf, &iaa) > 0) {
config_attach(parent, cf, &iaa, ioc_print);
tryagain = (cf->cf_fstate == FSTATE_STAR);
}
} while (tryagain);
return 0;
}
#endif
#if defined(BLINK)
static void
ioc_blink(void *self)
{
struct ioc_softc *sc = (struct ioc_softc *) self;
register int s;
int value;
s = splhigh();
/* This is a bit odd. To strobe the green LED, we have to toggle the
red control bit. */
value = bus_space_read_4(sc->sc_iot, sc->sc_ioh, IOC_RESET) & 0xff;
value ^= IOC_RESET_LED_RED;
bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_RESET, value);
splx(s);
/*
* Blink rate is:
* full cycle every second if completely idle (loadav = 0)
* full cycle every 2 seconds if loadav = 1
* full cycle every 3 seconds if loadav = 2
* etc.
*/
s = (((averunnable.ldavg[0] + FSCALE) * hz) >> (FSHIFT + 1));
callout_reset(&ioc_blink_ch, s, ioc_blink, sc);
}
#endif