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/* $NetBSD: pbus.c,v 1.15 2021/08/07 16:18:52 thorpej Exp $ */
/*
* Copyright 2001 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: pbus.c,v 1.15 2021/08/07 16:18:52 thorpej Exp $");
#include "locators.h"
#include "pckbc.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/bus.h>
#include <machine/walnut.h>
#include <evbppc/walnut/dev/pbusvar.h>
#include <powerpc/ibm4xx/ibm405gp.h>
#include <powerpc/ibm4xx/dev/plbvar.h>
/*
* The external devices on the Walnut 405GP evaluation board.
*/
const struct pbus_dev {
const char *name;
bus_addr_t addr;
int irq;
} pbus_devs [] = {
{ "ds1743rtc", NVRAM_BASE, -1 },
{ "pckbc", KEY_MOUSE_BASE, 25 }, /* XXX: really irq x..x+1 */
{ NULL }
};
static int pbus_match(device_t, cfdata_t, void *);
static void pbus_attach(device_t, device_t, void *);
static int pbus_print(void *, const char *);
CFATTACH_DECL_NEW(pbus, 0,
pbus_match, pbus_attach, NULL, NULL);
static struct powerpc_bus_space pbus_tag = {
_BUS_SPACE_LITTLE_ENDIAN | _BUS_SPACE_MEM_TYPE,
0x00000000,
NVRAM_BASE,
NVRAM_BASE + 0x0300010 /* Cover from NVRAM_BASE -> FPGA_BASE */
};
/*
* Probe for the peripheral bus.
*/
static int
pbus_match(device_t parent, cfdata_t cf, void *aux)
{
struct pbus_attach_args *pba = aux;
/* match only pbus devices */
if (strcmp(pba->pb_name, cf->cf_name) != 0)
return (0);
return (1);
}
/*
* Attach the peripheral bus.
*/
static void
pbus_attach(device_t parent, device_t self, void *aux)
{
struct plb_attach_args *paa = aux;
struct pbus_attach_args pba;
int i;
#if NPCKBC > 0
bus_space_handle_t ioh_fpga;
bus_space_tag_t iot_fpga = &pbus_tag;
uint8_t fpga_reg;
#endif
printf("\n");
if (bus_space_init(&pbus_tag, "pbus", NULL, 0))
panic("pbus_attach: can't init tag");
for (i = 0; pbus_devs[i].name != NULL; i++) {
pba.pb_name = pbus_devs[i].name;
pba.pb_addr = pbus_devs[i].addr;
pba.pb_irq = pbus_devs[i].irq;
pba.pb_bt = &pbus_tag;
pba.pb_dmat = paa->plb_dmat;
const int locs[PBUSCF_NLOCS] = {
[PBUSCF_ADDR] = pba.pb_addr,
[PBUSCF_IRQ] = pba.pb_irq
};
config_found(self, &pba, pbus_print,
CFARGS(.submatch = config_stdsubmatch,
.locators = locs));
}
#if NPCKBC > 0
/* Configure FPGA */
if (bus_space_map(iot_fpga, FPGA_BASE, FPGA_SIZE, 0, &ioh_fpga)) {
printf("pbus_attach: can't map FPGA\n");
/* XXX - disable keyboard probe? */
} else {
/* Use separate interrupts for keyboard and mouse */
fpga_reg = bus_space_read_1(iot_fpga, ioh_fpga, FPGA_BRDC);
fpga_reg |= FPGA_BRDC_INT;
bus_space_write_1(iot_fpga, ioh_fpga, FPGA_BRDC, fpga_reg);
/* Set interrupts to active high */
fpga_reg = bus_space_read_1(iot_fpga, ioh_fpga, FPGA_INT_POL);
fpga_reg |= (FPGA_IRQ_KYBD | FPGA_IRQ_MOUSE);
bus_space_write_1(iot_fpga, ioh_fpga, FPGA_INT_POL, fpga_reg);
/* Set interrupts to level triggered */
fpga_reg = bus_space_read_1(iot_fpga, ioh_fpga, FPGA_INT_TRIG);
fpga_reg |= (FPGA_IRQ_KYBD | FPGA_IRQ_MOUSE);
bus_space_write_1(iot_fpga, ioh_fpga, FPGA_INT_TRIG, fpga_reg);
/* Enable interrupts */
fpga_reg = bus_space_read_1(iot_fpga, ioh_fpga, FPGA_INT_ENABLE);
fpga_reg |= (FPGA_IRQ_KYBD | FPGA_IRQ_MOUSE);
bus_space_write_1(iot_fpga, ioh_fpga, FPGA_INT_ENABLE, fpga_reg);
bus_space_unmap(&iot_fpga, ioh_fpga, 2);
}
#endif
}
static int
pbus_print(void *aux, const char *pnp)
{
struct pbus_attach_args *pba = aux;
if (pnp)
printf("%s at %s", pba->pb_name, pnp);
if (pba->pb_addr != PBUSCF_ADDR_DEFAULT)
aprint_normal(" addr 0x%08lx", pba->pb_addr);
if (pba->pb_irq != PBUSCF_IRQ_DEFAULT)
aprint_normal(" irq %d", pba->pb_irq);
return (UNCONF);
}
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