171 lines
4.5 KiB
C
171 lines
4.5 KiB
C
/* $NetBSD: imc.c,v 1.1 2001/05/11 04:22:55 thorpej Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2001 Rafal K. Boni
|
|
* 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/systm.h>
|
|
|
|
#include <machine/cpu.h>
|
|
#include <machine/locore.h>
|
|
#include <machine/autoconf.h>
|
|
#include <machine/bus.h>
|
|
|
|
#include "locators.h"
|
|
|
|
struct imc_softc {
|
|
struct device sc_dev;
|
|
|
|
int eisa_present : 1;
|
|
};
|
|
|
|
static int imc_match(struct device *, struct cfdata *, void *);
|
|
static void imc_attach(struct device *, struct device *, void *);
|
|
static int imc_print(void *, const char *);
|
|
|
|
struct cfattach imc_ca = {
|
|
sizeof(struct imc_softc), imc_match, imc_attach
|
|
};
|
|
|
|
struct imc_attach_args {
|
|
const char* iaa_name;
|
|
|
|
bus_space_tag_t iaa_st;
|
|
bus_space_handle_t iaa_sh;
|
|
|
|
/* ? */
|
|
long iaa_offset;
|
|
int iaa_intr;
|
|
#if 0
|
|
int iaa_stride;
|
|
#endif
|
|
};
|
|
|
|
static int
|
|
imc_match(parent, match, aux)
|
|
struct device *parent;
|
|
struct cfdata *match;
|
|
void *aux;
|
|
{
|
|
struct mainbus_attach_args *ma = aux;
|
|
|
|
/*
|
|
* The IMC is an INDY/INDIGO2 thing.
|
|
*/
|
|
switch (ma->ma_arch) {
|
|
case 22:
|
|
/* Make sure it's actually there and readable */
|
|
if (badaddr((void*)MIPS_PHYS_TO_KSEG1(0x1fa0001c),
|
|
sizeof(u_int32_t)))
|
|
return 0;
|
|
|
|
return 1;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static void
|
|
imc_attach(parent, self, aux)
|
|
struct device *parent;
|
|
struct device *self;
|
|
void *aux;
|
|
{
|
|
u_int32_t reg;
|
|
struct imc_attach_args iaa;
|
|
struct imc_softc *isc = (void *) self;
|
|
u_int32_t sysid = *(volatile u_int32_t *)MIPS_PHYS_TO_KSEG1(0x1fa0001c);
|
|
|
|
isc->eisa_present = (sysid >> 4) & 1;
|
|
|
|
printf("\nimc0: Revision %d", (sysid & 0x03));
|
|
|
|
if (isc->eisa_present)
|
|
printf(", EISA bus present");
|
|
|
|
printf("\n");
|
|
|
|
/* Clear CPU/GIO error status registers to clear any leftover bits. */
|
|
*(volatile u_int32_t *)MIPS_PHYS_TO_KSEG1(0x1fa000ec) = 0;
|
|
*(volatile u_int32_t *)MIPS_PHYS_TO_KSEG1(0x1fa000fc) = 0;
|
|
|
|
/*
|
|
* Enable parity reporting on memory/GIO accesses, turn off parity
|
|
* checking on CPU reads from memory (flags cribbed from Linux --
|
|
* why is the last one off?). Also, enable MC interrupt writes to
|
|
* the CPU.
|
|
*/
|
|
reg = *(volatile u_int32_t *)MIPS_PHYS_TO_KSEG1(0x1fa00004);
|
|
reg |= 0x4002060;
|
|
*(volatile u_int32_t *)MIPS_PHYS_TO_KSEG1(0x1fa00004) = reg;
|
|
|
|
/* Setup the MC write buffer depth */
|
|
reg = *(volatile u_int32_t *)MIPS_PHYS_TO_KSEG1(0x1fa0000c);
|
|
reg &= ~0xf;
|
|
reg |= 0xd;
|
|
*(volatile u_int32_t *)MIPS_PHYS_TO_KSEG1(0x1fa0000c) = reg;
|
|
|
|
/* Set GIO64 arbitrator configuration register. */
|
|
|
|
/* GIO64 invariant for all IP22 platforms: one GIO bus, HPC1 @ 64 */
|
|
reg = 0x401;
|
|
|
|
/* XXXrkb: I2 setting for now */
|
|
reg |= 0xc222; /* GFX, HPC2 @ 64, EXP1,2 pipelined, EISA masters */
|
|
*(volatile u_int32_t *)MIPS_PHYS_TO_KSEG1(0x1fa00084) = reg;
|
|
|
|
if (isc->eisa_present) {
|
|
#if notyet
|
|
memset(&iaa, 0, sizeof(iaa));
|
|
|
|
iaa.iaa_name = "eisa";
|
|
(void)config_found(self, (void*)&iaa, imc_print);
|
|
#endif
|
|
}
|
|
|
|
memset(&iaa, 0, sizeof(iaa));
|
|
|
|
iaa.iaa_name = "gio";
|
|
(void)config_found(self, (void*)&iaa, imc_print);
|
|
}
|
|
|
|
|
|
static int
|
|
imc_print(aux, name)
|
|
void *aux;
|
|
const char *name;
|
|
{
|
|
struct imc_attach_args* iaa = aux;
|
|
|
|
if (name)
|
|
printf("%s at %s", iaa->iaa_name, name);
|
|
|
|
return UNCONF;
|
|
}
|
|
|