NetBSD-5.0.2/sys/arch/powerpc/ibm4xx/dev/opb.c
/* $NetBSD: opb.c,v 1.23 2006/03/13 15:31:11 shige Exp $ */
/*
* Copyright 2001,2002 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc.
*
* 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 by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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.
*/
/*
* Copyright (c) 1996 Christopher G. Demetriou. 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 by Christopher G. Demetriou
* for the NetBSD Project.
* 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: opb.c,v 1.23 2006/03/13 15:31:11 shige Exp $");
#include "locators.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/extent.h>
#include <powerpc/spr.h>
#include <powerpc/ibm4xx/dev/opbvar.h>
#include <powerpc/ibm4xx/dev/plbvar.h>
#include <powerpc/ibm4xx/ibm405gp.h>
/*
* The devices on the On-chip Peripheral Bus to the 405GP CPU.
*/
const struct opb_dev {
int pvr;
const char *name;
bus_addr_t addr;
int instance;
int irq;
} opb_devs [] = {
/* IBM405GP */
{ IBM405GP, "com", IBM405GP_UART0_BASE, 0, 0 },
{ IBM405GP, "com", IBM405GP_UART1_BASE, 1, 1 },
{ IBM405GP, "emac", IBM405GP_EMAC0_BASE, 0, 9 }, /* XXX: really irq 9..15 */
{ IBM405GP, "opbgpio", IBM405GP_GPIO0_BASE, 0, -1 },
{ IBM405GP, "gpiic",IBM405GP_IIC0_BASE, 0, 2 },
{ IBM405GP, "wdog", -1, 0, -1 },
/* IBM405GPR */
{ IBM405GPR, "com", IBM405GP_UART0_BASE, 0, 0 },
{ IBM405GPR, "com", IBM405GP_UART1_BASE, 1, 1 },
{ IBM405GPR, "emac", IBM405GP_EMAC0_BASE, 0, 9 }, /* XXX: really irq 9..15 */
{ IBM405GPR, "opbgpio", IBM405GP_GPIO0_BASE, 0, -1 },
{ IBM405GPR, "gpiic",IBM405GP_IIC0_BASE, 0, 2 },
{ IBM405GPR, "wdog", -1, 0, -1 },
{ 0, NULL }
};
const struct opb_limit {
int pvr;
bus_addr_t base;
bus_addr_t limit;
} opb_limits[] = {
{ IBM405GP, IBM405GP_UART0_BASE, IBM405GP_UART0_BASE + 0xfff },
{ IBM405GPR, IBM405GP_UART0_BASE, IBM405GP_UART0_BASE + 0xfff },
{ 0, 0, 0 }
};
static int opb_match(struct device *, struct cfdata *, void *);
static void opb_attach(struct device *, struct device *, void *);
static int opb_submatch(struct device *, struct cfdata *,
const int *, void *);
static int opb_print(void *, const char *);
CFATTACH_DECL(opb, sizeof(struct device),
opb_match, opb_attach, NULL, NULL);
static struct powerpc_bus_space opb_tag = {
_BUS_SPACE_BIG_ENDIAN|_BUS_SPACE_MEM_TYPE,
0x0, IBM405GP_UART0_BASE, 0x1000
};
static char ex_storage[EXTENT_FIXED_STORAGE_SIZE(8)]
__attribute__((aligned(8)));
static int opb_tag_init_done;
/*
* Probe for the opb; always succeeds.
*/
static int
opb_match(struct device *parent, struct cfdata *cf, void *aux)
{
struct opb_attach_args *oaa = aux;
/* match only opb devices */
if (strcmp(oaa->opb_name, cf->cf_name) != 0)
return (0);
return (1);
}
static int
opb_submatch(struct device *parent, struct cfdata *cf,
const int *ldesc, void *aux)
{
struct opb_attach_args *oaa = aux;
if (cf->cf_loc[OPBCF_ADDR] != OPBCF_ADDR_DEFAULT &&
cf->cf_loc[OPBCF_ADDR] != oaa->opb_addr)
return (0);
return (config_match(parent, cf, aux));
}
/*
* Attach the on-chip peripheral bus.
*/
static void
opb_attach(struct device *parent, struct device *self, void *aux)
{
struct plb_attach_args *paa = aux;
struct opb_attach_args oaa;
bus_space_tag_t tag;
int i, pvr;
printf("\n");
pvr = mfpvr() >> 16;
tag = opb_get_bus_space_tag();
for (i = 0; opb_devs[i].name != NULL; i++) {
if (opb_devs[i].pvr != pvr)
continue;
oaa.opb_name = opb_devs[i].name;
oaa.opb_addr = opb_devs[i].addr;
oaa.opb_instance = opb_devs[i].instance;
oaa.opb_irq = opb_devs[i].irq;
oaa.opb_bt = tag;
oaa.opb_dmat = paa->plb_dmat;
(void) config_found_sm_loc(self, "opb", NULL, &oaa, opb_print,
opb_submatch);
}
}
static int
opb_print(void *aux, const char *pnp)
{
struct opb_attach_args *oaa = aux;
if (pnp)
aprint_normal("%s at %s", oaa->opb_name, pnp);
if (oaa->opb_addr != OPBCF_ADDR_DEFAULT)
aprint_normal(" addr 0x%08lx", oaa->opb_addr);
if (oaa->opb_irq != OPBCF_IRQ_DEFAULT)
aprint_normal(" irq %d", oaa->opb_irq);
return (UNCONF);
}
bus_space_tag_t
opb_get_bus_space_tag(void)
{
int i, pvr;
if (!opb_tag_init_done) {
pvr = mfpvr() >> 16;
for (i = 0; opb_limits[i].pvr && opb_limits[i].pvr != pvr; i++)
;
if (opb_limits[i].pvr == 0)
panic("opb_get_bus_space_tag: no limits for this CPU!");
opb_tag.pbs_base = opb_limits[i].base;
opb_tag.pbs_limit = opb_limits[i].limit;
if (bus_space_init(&opb_tag, "opbtag",
ex_storage, sizeof(ex_storage)))
panic("opb_attach: Failed to initialise opb_tag");
opb_tag_init_done = 1;
}
return (&opb_tag);
}