pbus.c revision 1.2
1 /* $NetBSD: pbus.c,v 1.2 2003/01/01 01:31:50 thorpej Exp $ */ 2 3 /* 4 * Copyright 2001 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. All advertising materials mentioning features or use of this software 50 * must display the following acknowledgement: 51 * This product includes software developed by Christopher G. Demetriou 52 * for the NetBSD Project. 53 * 4. The name of the author may not be used to endorse or promote products 54 * derived from this software without specific prior written permission 55 * 56 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 57 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 58 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 59 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 60 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 61 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 62 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 63 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 64 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 65 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 66 */ 67 68 #include "locators.h" 69 #include "pckbc.h" 70 71 #include <sys/param.h> 72 #include <sys/systm.h> 73 #include <sys/device.h> 74 75 #include <machine/bus.h> 76 #include <machine/walnut.h> 77 78 #include <evbppc/walnut/dev/pbusvar.h> 79 80 #include <powerpc/ibm4xx/ibm405gp.h> 81 #include <powerpc/ibm4xx/dev/plbvar.h> 82 83 /* 84 * The devices built in to the 405GP cpu. 85 */ 86 const struct pbus_dev { 87 const char *name; 88 bus_addr_t addr; 89 int irq; 90 } pbus_devs [] = { 91 { "dsrtc", NVRAM_BASE, -1 }, 92 { "pckbc", KEY_MOUSE_BASE, 25 }, /* XXX: really irq x..x+1 */ 93 { NULL } 94 }; 95 96 static int pbus_match(struct device *, struct cfdata *, void *); 97 static void pbus_attach(struct device *, struct device *, void *); 98 static int pbus_submatch(struct device *, struct cfdata *, void *); 99 static int pbus_print(void *, const char *); 100 101 CFATTACH_DECL(pbus, sizeof(struct device), 102 pbus_match, pbus_attach, NULL, NULL); 103 104 /* 105 * Probe for the peripheral bus. 106 */ 107 static int 108 pbus_match(struct device *parent, struct cfdata *cf, void *aux) 109 { 110 struct pbus_attach_args *pba = aux; 111 112 /* match only pbus devices */ 113 if (strcmp(pba->pb_name, cf->cf_name) != 0) 114 return (0); 115 116 return (1); 117 } 118 119 static int 120 pbus_submatch(struct device *parent, struct cfdata *cf, void *aux) 121 { 122 struct pbus_attach_args *pba = aux; 123 124 if (cf->cf_loc[PBUSCF_ADDR] != PBUSCF_ADDR_DEFAULT && 125 cf->cf_loc[PBUSCF_ADDR] != pba->pb_addr) 126 return (0); 127 128 return (config_match(parent, cf, aux)); 129 } 130 131 /* 132 * Attach the peripheral bus. 133 */ 134 static void 135 pbus_attach(struct device *parent, struct device *self, void *aux) 136 { 137 struct plb_attach_args *paa = aux; 138 struct pbus_attach_args pba; 139 int i; 140 #if NPCKBC > 0 141 bus_space_handle_t ioh_fpga; 142 bus_space_tag_t iot_fpga = paa->plb_bt; 143 uint8_t fpga_reg; 144 #endif 145 146 printf("\n"); 147 148 for (i = 0; pbus_devs[i].name != NULL; i++) { 149 pba.pb_name = pbus_devs[i].name; 150 pba.pb_addr = pbus_devs[i].addr; 151 pba.pb_irq = pbus_devs[i].irq; 152 pba.pb_bt = paa->plb_bt; 153 pba.pb_dmat = paa->plb_dmat; 154 155 (void) config_found_sm(self, &pba, pbus_print, pbus_submatch); 156 } 157 158 #if NPCKBC > 0 159 /* Configure FPGA */ 160 if (bus_space_map(iot_fpga, FPGA_BASE, FPGA_SIZE, 0, &ioh_fpga)) { 161 printf("pbus_attach: can't map FPGA\n"); 162 /* XXX - disable keyboard probe? */ 163 } else { 164 /* Use separate interrupts for keyboard and mouse */ 165 fpga_reg = bus_space_read_1(iot_fpga, ioh_fpga, FPGA_BRDC); 166 fpga_reg |= FPGA_BRDC_INT; 167 bus_space_write_1(iot_fpga, ioh_fpga, FPGA_BRDC, fpga_reg); 168 169 /* Set interrupts to active high */ 170 fpga_reg = bus_space_read_1(iot_fpga, ioh_fpga, FPGA_INT_POL); 171 fpga_reg |= (FPGA_IRQ_KYBD | FPGA_IRQ_MOUSE); 172 bus_space_write_1(iot_fpga, ioh_fpga, FPGA_INT_POL, fpga_reg); 173 174 /* Set interrupts to level triggered */ 175 fpga_reg = bus_space_read_1(iot_fpga, ioh_fpga, FPGA_INT_TRIG); 176 fpga_reg |= (FPGA_IRQ_KYBD | FPGA_IRQ_MOUSE); 177 bus_space_write_1(iot_fpga, ioh_fpga, FPGA_INT_TRIG, fpga_reg); 178 179 /* Enable interrupts */ 180 fpga_reg = bus_space_read_1(iot_fpga, ioh_fpga, FPGA_INT_ENABLE); 181 fpga_reg |= (FPGA_IRQ_KYBD | FPGA_IRQ_MOUSE); 182 bus_space_write_1(iot_fpga, ioh_fpga, FPGA_INT_ENABLE, fpga_reg); 183 184 bus_space_unmap(&iot_fpga, ioh_fpga, 2); 185 } 186 #endif 187 188 } 189 190 static int 191 pbus_print(void *aux, const char *pnp) 192 { 193 struct pbus_attach_args *pba = aux; 194 195 if (pnp) 196 printf("%s at %s", pba->pb_name, pnp); 197 198 if (pba->pb_addr != PBUSCF_ADDR_DEFAULT) 199 aprint_normal(" addr 0x%08lx", pba->pb_addr); 200 if (pba->pb_irq != PBUSCF_IRQ_DEFAULT) 201 aprint_normal(" irq %d", pba->pb_irq); 202 203 return (UNCONF); 204 } 205
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