pbus.c revision 1.7
1 /* $NetBSD: pbus.c,v 1.7 2005/06/28 18:29:59 drochner 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 <sys/cdefs.h> 69 __KERNEL_RCSID(0, "$NetBSD: pbus.c,v 1.7 2005/06/28 18:29:59 drochner Exp $"); 70 71 #include "locators.h" 72 #include "pckbc.h" 73 74 #include <sys/param.h> 75 #include <sys/systm.h> 76 #include <sys/device.h> 77 78 #include <machine/bus.h> 79 #include <machine/walnut.h> 80 81 #include <evbppc/walnut/dev/pbusvar.h> 82 83 #include <powerpc/ibm4xx/ibm405gp.h> 84 #include <powerpc/ibm4xx/dev/plbvar.h> 85 86 /* 87 * The external devices on the Walnut 405GP evaluation board. 88 */ 89 const struct pbus_dev { 90 const char *name; 91 bus_addr_t addr; 92 int irq; 93 } pbus_devs [] = { 94 { "ds1743rtc", NVRAM_BASE, -1 }, 95 { "pckbc", KEY_MOUSE_BASE, 25 }, /* XXX: really irq x..x+1 */ 96 { NULL } 97 }; 98 99 static int pbus_match(struct device *, struct cfdata *, void *); 100 static void pbus_attach(struct device *, struct device *, void *); 101 static int pbus_submatch(struct device *, struct cfdata *, 102 const locdesc_t *, void *); 103 static int pbus_print(void *, const char *); 104 105 CFATTACH_DECL(pbus, sizeof(struct device), 106 pbus_match, pbus_attach, NULL, NULL); 107 108 static struct powerpc_bus_space pbus_tag = { 109 _BUS_SPACE_LITTLE_ENDIAN | _BUS_SPACE_MEM_TYPE, 110 0x00000000, 111 NVRAM_BASE, 112 NVRAM_BASE + 0x0300010 /* Cover from NVRAM_BASE -> FPGA_BASE */ 113 }; 114 115 /* 116 * Probe for the peripheral bus. 117 */ 118 static int 119 pbus_match(struct device *parent, struct cfdata *cf, void *aux) 120 { 121 struct pbus_attach_args *pba = aux; 122 123 /* match only pbus devices */ 124 if (strcmp(pba->pb_name, cf->cf_name) != 0) 125 return (0); 126 127 return (1); 128 } 129 130 static int 131 pbus_submatch(struct device *parent, struct cfdata *cf, 132 const locdesc_t *ldesc, void *aux) 133 { 134 struct pbus_attach_args *pba = aux; 135 136 if (cf->cf_loc[PBUSCF_ADDR] != PBUSCF_ADDR_DEFAULT && 137 cf->cf_loc[PBUSCF_ADDR] != pba->pb_addr) 138 return (0); 139 140 return (config_match(parent, cf, aux)); 141 } 142 143 /* 144 * Attach the peripheral bus. 145 */ 146 static void 147 pbus_attach(struct device *parent, struct device *self, void *aux) 148 { 149 struct plb_attach_args *paa = aux; 150 struct pbus_attach_args pba; 151 int i; 152 #if NPCKBC > 0 153 bus_space_handle_t ioh_fpga; 154 bus_space_tag_t iot_fpga = &pbus_tag; 155 uint8_t fpga_reg; 156 #endif 157 158 printf("\n"); 159 160 if (bus_space_init(&pbus_tag, "pbus", NULL, 0)) 161 panic("pbus_attach: can't init tag"); 162 163 for (i = 0; pbus_devs[i].name != NULL; i++) { 164 pba.pb_name = pbus_devs[i].name; 165 pba.pb_addr = pbus_devs[i].addr; 166 pba.pb_irq = pbus_devs[i].irq; 167 pba.pb_bt = &pbus_tag; 168 pba.pb_dmat = paa->plb_dmat; 169 170 (void) config_found_sm_loc(self, "pbus", NULL, &pba, pbus_print, 171 pbus_submatch); 172 } 173 174 #if NPCKBC > 0 175 /* Configure FPGA */ 176 if (bus_space_map(iot_fpga, FPGA_BASE, FPGA_SIZE, 0, &ioh_fpga)) { 177 printf("pbus_attach: can't map FPGA\n"); 178 /* XXX - disable keyboard probe? */ 179 } else { 180 /* Use separate interrupts for keyboard and mouse */ 181 fpga_reg = bus_space_read_1(iot_fpga, ioh_fpga, FPGA_BRDC); 182 fpga_reg |= FPGA_BRDC_INT; 183 bus_space_write_1(iot_fpga, ioh_fpga, FPGA_BRDC, fpga_reg); 184 185 /* Set interrupts to active high */ 186 fpga_reg = bus_space_read_1(iot_fpga, ioh_fpga, FPGA_INT_POL); 187 fpga_reg |= (FPGA_IRQ_KYBD | FPGA_IRQ_MOUSE); 188 bus_space_write_1(iot_fpga, ioh_fpga, FPGA_INT_POL, fpga_reg); 189 190 /* Set interrupts to level triggered */ 191 fpga_reg = bus_space_read_1(iot_fpga, ioh_fpga, FPGA_INT_TRIG); 192 fpga_reg |= (FPGA_IRQ_KYBD | FPGA_IRQ_MOUSE); 193 bus_space_write_1(iot_fpga, ioh_fpga, FPGA_INT_TRIG, fpga_reg); 194 195 /* Enable interrupts */ 196 fpga_reg = bus_space_read_1(iot_fpga, ioh_fpga, FPGA_INT_ENABLE); 197 fpga_reg |= (FPGA_IRQ_KYBD | FPGA_IRQ_MOUSE); 198 bus_space_write_1(iot_fpga, ioh_fpga, FPGA_INT_ENABLE, fpga_reg); 199 200 bus_space_unmap(&iot_fpga, ioh_fpga, 2); 201 } 202 #endif 203 204 } 205 206 static int 207 pbus_print(void *aux, const char *pnp) 208 { 209 struct pbus_attach_args *pba = aux; 210 211 if (pnp) 212 printf("%s at %s", pba->pb_name, pnp); 213 214 if (pba->pb_addr != PBUSCF_ADDR_DEFAULT) 215 aprint_normal(" addr 0x%08lx", pba->pb_addr); 216 if (pba->pb_irq != PBUSCF_IRQ_DEFAULT) 217 aprint_normal(" irq %d", pba->pb_irq); 218 219 return (UNCONF); 220 } 221
Indexes created Mon Sep 29 21:09:56 GMT 2025