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/* $OpenBSD: mainbus.c,v 1.3 2010/04/20 22:53:24 miod Exp $ */
/*
* Copyright (c) 1998 Steve Murphree, Jr.
* Copyright (c) 2004, Miodrag Vallat.
*
* 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.
*
* 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/systm.h>
#include <sys/reboot.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/disklabel.h>
#include <sys/extent.h>
#include <uvm/uvm_extern.h>
#include <machine/autoconf.h>
#include <machine/bus.h>
#include <machine/cmmu.h>
#include <machine/cpu.h>
#include <machine/prom.h>
void mainbus_attach(struct device *, struct device *, void *);
int mainbus_match(struct device *, void *, void *);
int mainbus_print(void *, const char *);
int mainbus_scan(struct device *, void *, void *);
/*
* bus_space routines for 1:1 obio mappings
*/
int mainbus_map(bus_space_tag_t, bus_addr_t, bus_size_t, int,
bus_space_handle_t *);
void mainbus_unmap(bus_space_tag_t, bus_space_handle_t, bus_size_t);
int mainbus_subregion(bus_space_tag_t, bus_space_handle_t, bus_size_t,
bus_size_t, bus_space_handle_t *);
void *mainbus_vaddr(bus_space_tag_t, bus_space_handle_t);
const struct aviion_bus_space_tag mainbus_bustag = {
._space_map = mainbus_map,
._space_unmap = mainbus_unmap,
._space_subregion = mainbus_subregion,
._space_vaddr = mainbus_vaddr,
._space_read_1 = generic_space_read_1,
._space_write_1 = generic_space_write_1,
._space_read_2 = generic_space_read_2,
._space_write_2 = generic_space_write_2,
._space_read_4 = generic_space_read_4,
._space_write_4 = generic_space_write_4,
._space_read_raw_2 = generic_space_read_raw_2,
._space_write_raw_2 = generic_space_write_raw_2,
._space_read_raw_4 = generic_space_read_raw_4,
._space_write_raw_4 = generic_space_write_raw_4,
};
/*
* Obio (internal IO) space is mapped 1:1 (see pmap_bootstrap() for details).
*/
int
mainbus_map(bus_space_tag_t tag, bus_addr_t addr, bus_size_t size, int flags,
bus_space_handle_t *ret)
{
*ret = (bus_space_handle_t)addr;
return 0;
}
void
mainbus_unmap(bus_space_tag_t tag, bus_space_handle_t handle, bus_size_t size)
{
/* nothing to do */
}
int
mainbus_subregion(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, bus_size_t size, bus_space_handle_t *ret)
{
*ret = handle + offset;
return (0);
}
void *
mainbus_vaddr(bus_space_tag_t tag, bus_space_handle_t handle)
{
return (void *)handle;
}
/*
* Configuration glue
*/
struct cfattach mainbus_ca = {
sizeof(struct device), mainbus_match, mainbus_attach
};
struct cfdriver mainbus_cd = {
NULL, "mainbus", DV_DULL
};
int
mainbus_match(struct device *parent, void *cf, void *args)
{
return (mainbus_cd.cd_ndevs == 0);
}
void
mainbus_attach(struct device *parent, struct device *self, void *args)
{
extern char cpu_model[];
extern int32_t cpuid, sysid;
printf(": %s, cpuid 0x%x", cpu_model, cpuid);
if (sysid != -1)
printf(", sysid %x", sysid);
printf("\n");
/*
* Display cpu/mmu details for the main processor.
*/
cpu_configuration_print(1);
(void)config_search(mainbus_scan, self, args);
}
int
mainbus_scan(struct device *parent, void *child, void *args)
{
struct cfdata *cf = child;
struct confargs oca;
oca.ca_iot = &mainbus_bustag;
oca.ca_paddr = (paddr_t)cf->cf_loc[0];
oca.ca_offset = (paddr_t)-1;
oca.ca_ipl = (u_int)-1;
if ((*cf->cf_attach->ca_match)(parent, cf, &oca) == 0)
return (0);
config_attach(parent, cf, &oca, mainbus_print);
return (1);
}
int
mainbus_print(void *args, const char *bus)
{
struct confargs *ca = args;
if (ca->ca_paddr != (paddr_t)-1)
printf(" addr 0x%08x", ca->ca_paddr);
return (UNCONF);
}
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