/* $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); }
