168 lines
4.7 KiB
C
168 lines
4.7 KiB
C
/* $NetBSD: oioc.c,v 1.1 2009/02/10 06:04:56 rumble Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2009 Stephen M. Rumble
|
|
* 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. 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.
|
|
*/
|
|
|
|
/*
|
|
* IOC1/IOC2 chips on IP4 and IP6/IP10 machines. This interfaces the SCSI
|
|
* and Ethernet controllers, performs DMA for the former, and does address
|
|
* space translation for the latter (maps the lance memory space to physical
|
|
* pages).
|
|
*
|
|
* 'I/O Controller' is a sufficiently generic name that SGI created another
|
|
* one for IP24, which basically stuffed a bunch of miscellany on an ASIC.
|
|
* So, we'll call ourselves 'Old IOC' and hope that there wasn't an even older
|
|
* one.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: oioc.c,v 1.1 2009/02/10 06:04:56 rumble Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/device.h>
|
|
|
|
#define _SGIMIPS_BUS_DMA_PRIVATE
|
|
#include <machine/cpu.h>
|
|
#include <machine/locore.h>
|
|
#include <machine/autoconf.h>
|
|
#include <machine/bus.h>
|
|
#include <machine/machtype.h>
|
|
#include <machine/sysconf.h>
|
|
|
|
#include <sgimips/ioc/oiocreg.h>
|
|
#include <sgimips/ioc/oiocvar.h>
|
|
|
|
#include "locators.h"
|
|
|
|
struct oioc_softc {
|
|
struct device sc_dev;
|
|
|
|
int sc_burst_dma;
|
|
|
|
bus_space_tag_t sc_iot;
|
|
bus_space_handle_t sc_ioh;
|
|
};
|
|
|
|
static int oioc_match(struct device *, struct cfdata *, void *);
|
|
static void oioc_attach(struct device *, struct device *, void *);
|
|
static int oioc_print(void *, const char *);
|
|
|
|
CFATTACH_DECL(oioc, sizeof(struct oioc_softc),
|
|
oioc_match, oioc_attach, NULL, NULL);
|
|
|
|
struct oioc_device {
|
|
const char *od_name;
|
|
int od_irq;
|
|
} oioc_devices[] = {
|
|
{ "oiocsc", 4 },
|
|
{ "le", 5 },
|
|
{ NULL, 0 }
|
|
};
|
|
|
|
static int
|
|
oioc_match(struct device * parent, struct cfdata * match, void *aux)
|
|
{
|
|
|
|
switch(mach_type) {
|
|
case MACH_SGI_IP4:
|
|
case MACH_SGI_IP6 | MACH_SGI_IP10:
|
|
return (1);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
oioc_attach(struct device * parent, struct device * self, void *aux)
|
|
{
|
|
struct oioc_softc *sc = (struct oioc_softc *)self;
|
|
struct mainbus_attach_args *ma = aux;
|
|
uint32_t reg1, reg2;
|
|
int oiocrev, i;
|
|
|
|
sc->sc_iot = SGIMIPS_BUS_SPACE_NORMAL;
|
|
if (bus_space_map(sc->sc_iot, ma->ma_addr, 0,
|
|
BUS_SPACE_MAP_LINEAR, &sc->sc_ioh))
|
|
panic("oioc_attach: could not allocate memory\n");
|
|
|
|
if (platform.badaddr((void *)MIPS_PHYS_TO_KSEG1(ma->ma_addr +
|
|
OIOC2_CONFIG), 4))
|
|
oiocrev = 1;
|
|
else
|
|
oiocrev = 2;
|
|
|
|
printf("\noioc0: Old SGI IOC%d\n", oiocrev);
|
|
|
|
if (oiocrev == 2) {
|
|
char buf[64];
|
|
|
|
/* Try to enable burst mode. If we can't, we can't... */
|
|
reg1 = 12 << OIOC2_CONFIG_HIWAT_SHFT;
|
|
reg1 |= OIOC2_CONFIG_BURST_MASK;
|
|
bus_space_write_4(sc->sc_iot, sc->sc_ioh, OIOC2_CONFIG, reg1);
|
|
DELAY(1000);
|
|
reg2 = bus_space_read_4(sc->sc_iot, sc->sc_ioh, OIOC2_CONFIG);
|
|
if ((reg2 & (reg1 | OIOC2_CONFIG_NOSYNC_MASK)) == reg1)
|
|
sc->sc_burst_dma = 1;
|
|
|
|
snprintb(buf, sizeof(buf),
|
|
"\177\020"
|
|
"f\0\4HIWAT\0"
|
|
"f\4\2ID\0"
|
|
"b\6NOSYNC\0"
|
|
"b\7BURST\0"
|
|
"f\x8\7COUNT\0"
|
|
"f\x10\6SCP\0"
|
|
"f\x1c\4IOP\0\0",
|
|
(u_quad_t)reg2 & 0xffffffff);
|
|
printf("oioc0: %s\n", buf);
|
|
}
|
|
|
|
printf("oioc0: Burst DMA %ssupported\n",
|
|
(sc->sc_burst_dma) ? "" : "not ");
|
|
|
|
for (i = 0; oioc_devices[i].od_name != NULL; i++) {
|
|
struct oioc_attach_args oa;
|
|
|
|
oa.oa_name = oioc_devices[i].od_name;
|
|
oa.oa_irq = oioc_devices[i].od_irq;
|
|
oa.oa_burst_dma = sc->sc_burst_dma;
|
|
oa.oa_st = SGIMIPS_BUS_SPACE_NORMAL;
|
|
oa.oa_sh = sc->sc_ioh;
|
|
oa.oa_dmat = &sgimips_default_bus_dma_tag;
|
|
config_found_ia(self, "oioc", &oa, oioc_print);
|
|
}
|
|
}
|
|
|
|
static int
|
|
oioc_print(void *aux, const char *pnp)
|
|
{
|
|
struct oioc_attach_args *oa = aux;
|
|
|
|
if (pnp)
|
|
printf("%s at %s", oa->oa_name, pnp);
|
|
|
|
return (UNCONF);
|
|
}
|