207 lines
6.9 KiB
C
207 lines
6.9 KiB
C
/* $NetBSD: pbus.c,v 1.3 2002/08/13 06:15:16 simonb Exp $ */
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/*
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* Copyright 2001 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christopher G. Demetriou
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* for the NetBSD Project.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "locators.h"
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#include "pckbc.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <machine/bus.h>
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#include <machine/walnut.h>
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#include <arch/walnut/dev/pbusvar.h>
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#include <powerpc/ibm4xx/ibm405gp.h>
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#include <powerpc/ibm4xx/dev/plbvar.h>
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/*
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* The devices built in to the 405GP cpu.
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*/
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const struct pbus_dev {
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const char *name;
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bus_addr_t addr;
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int irq;
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} pbus_devs [] = {
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{ "dsrtc", NVRAM_BASE, -1 },
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{ "pckbc", KEY_MOUSE_BASE, 25 }, /* XXX: really irq x..x+1 */
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{ NULL }
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};
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static int pbus_match(struct device *, struct cfdata *, void *);
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static void pbus_attach(struct device *, struct device *, void *);
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static int pbus_submatch(struct device *, struct cfdata *, void *);
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static int pbus_print(void *, const char *);
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struct cfattach pbus_ca = {
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sizeof(struct device), pbus_match, pbus_attach
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};
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/*
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* Probe for the peripheral bus.
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*/
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static int
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pbus_match(struct device *parent, struct cfdata *cf, void *aux)
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{
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struct pbus_attach_args *pba = aux;
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/* match only pbus devices */
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if (strcmp(pba->pb_name, cf->cf_driver->cd_name) != 0)
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return (0);
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return (1);
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}
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static int
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pbus_submatch(struct device *parent, struct cfdata *cf, void *aux)
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{
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struct pbus_attach_args *pba = aux;
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if (cf->cf_loc[PBUSCF_ADDR] != PBUSCF_ADDR_DEFAULT &&
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cf->cf_loc[PBUSCF_ADDR] != pba->pb_addr)
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return (0);
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return ((*cf->cf_attach->ca_match)(parent, cf, aux));
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}
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/*
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* Attach the peripheral bus.
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*/
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static void
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pbus_attach(struct device *parent, struct device *self, void *aux)
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{
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struct plb_attach_args *paa = aux;
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struct pbus_attach_args pba;
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int i;
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#if NPCKBC > 0
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bus_space_handle_t ioh_fpga;
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bus_space_tag_t iot_fpga = paa->plb_bt;
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uint8_t fpga_reg;
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#endif
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printf("\n");
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for (i = 0; pbus_devs[i].name != NULL; i++) {
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pba.pb_name = pbus_devs[i].name;
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pba.pb_addr = pbus_devs[i].addr;
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pba.pb_irq = pbus_devs[i].irq;
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pba.pb_bt = paa->plb_bt;
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pba.pb_dmat = paa->plb_dmat;
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(void) config_found_sm(self, &pba, pbus_print, pbus_submatch);
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}
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#if NPCKBC > 0
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/* Configure FPGA */
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if (bus_space_map(iot_fpga, FPGA_BASE, FPGA_SIZE, 0, &ioh_fpga)) {
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printf("pbus_attach: can't map FPGA\n");
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/* XXX - disable keyboard probe? */
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} else {
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/* Use separate interrupts for keyboard and mouse */
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fpga_reg = bus_space_read_1(iot_fpga, ioh_fpga, FPGA_BRDC);
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fpga_reg |= FPGA_BRDC_INT;
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bus_space_write_1(iot_fpga, ioh_fpga, FPGA_BRDC, fpga_reg);
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/* Set interrupts to active high */
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fpga_reg = bus_space_read_1(iot_fpga, ioh_fpga, FPGA_INT_POL);
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fpga_reg |= (FPGA_IRQ_KYBD | FPGA_IRQ_MOUSE);
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bus_space_write_1(iot_fpga, ioh_fpga, FPGA_INT_POL, fpga_reg);
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/* Set interrupts to level triggered */
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fpga_reg = bus_space_read_1(iot_fpga, ioh_fpga, FPGA_INT_TRIG);
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fpga_reg |= (FPGA_IRQ_KYBD | FPGA_IRQ_MOUSE);
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bus_space_write_1(iot_fpga, ioh_fpga, FPGA_INT_TRIG, fpga_reg);
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/* Enable interrupts */
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fpga_reg = bus_space_read_1(iot_fpga, ioh_fpga, FPGA_INT_ENABLE);
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fpga_reg |= (FPGA_IRQ_KYBD | FPGA_IRQ_MOUSE);
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bus_space_write_1(iot_fpga, ioh_fpga, FPGA_INT_ENABLE, fpga_reg);
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bus_space_unmap(&iot_fpga, ioh_fpga, 2);
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}
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#endif
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}
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static int
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pbus_print(void *aux, const char *pnp)
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{
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struct pbus_attach_args *pba = aux;
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if (pnp)
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printf("%s at %s", pba->pb_name, pnp);
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if (pba->pb_addr != PBUSCF_ADDR_DEFAULT)
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printf(" addr 0x%08lx", pba->pb_addr);
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if (pba->pb_irq != PBUSCF_IRQ_DEFAULT)
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printf(" irq %d", pba->pb_irq);
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return (UNCONF);
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}
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