1 /* $NetBSD: pbus.c,v 1.15 2021/08/07 16:18:52 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 <sys/cdefs.h> 69 __KERNEL_RCSID(0, "$NetBSD: pbus.c,v 1.15 2021/08/07 16:18:52 thorpej 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 <sys/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(device_t, cfdata_t, void *); 100 static void pbus_attach(device_t, device_t, void *); 101 static int pbus_print(void *, const char *); 102 103 CFATTACH_DECL_NEW(pbus, 0, 104 pbus_match, pbus_attach, NULL, NULL); 105 106 static struct powerpc_bus_space pbus_tag = { 107 _BUS_SPACE_LITTLE_ENDIAN | _BUS_SPACE_MEM_TYPE, 108 0x00000000, 109 NVRAM_BASE, 110 NVRAM_BASE + 0x0300010 /* Cover from NVRAM_BASE -> FPGA_BASE */ 111 }; 112 113 /* 114 * Probe for the peripheral bus. 115 */ 116 static int 117 pbus_match(device_t parent, cfdata_t cf, void *aux) 118 { 119 struct pbus_attach_args *pba = aux; 120 121 /* match only pbus devices */ 122 if (strcmp(pba->pb_name, cf->cf_name) != 0) 123 return (0); 124 125 return (1); 126 } 127 128 /* 129 * Attach the peripheral bus. 130 */ 131 static void 132 pbus_attach(device_t parent, device_t self, void *aux) 133 { 134 struct plb_attach_args *paa = aux; 135 struct pbus_attach_args pba; 136 int i; 137 #if NPCKBC > 0 138 bus_space_handle_t ioh_fpga; 139 bus_space_tag_t iot_fpga = &pbus_tag; 140 uint8_t fpga_reg; 141 #endif 142 143 printf("\n"); 144 145 if (bus_space_init(&pbus_tag, "pbus", NULL, 0)) 146 panic("pbus_attach: can't init tag"); 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 = &pbus_tag; 153 pba.pb_dmat = paa->plb_dmat; 154 155 const int locs[PBUSCF_NLOCS] = { 156 [PBUSCF_ADDR] = pba.pb_addr, 157 [PBUSCF_IRQ] = pba.pb_irq 158 }; 159 160 config_found(self, &pba, pbus_print, 161 CFARGS(.submatch = config_stdsubmatch, 162 .locators = locs)); 163 } 164 165 #if NPCKBC > 0 166 /* Configure FPGA */ 167 if (bus_space_map(iot_fpga, FPGA_BASE, FPGA_SIZE, 0, &ioh_fpga)) { 168 printf("pbus_attach: can't map FPGA\n"); 169 /* XXX - disable keyboard probe? */ 170 } else { 171 /* Use separate interrupts for keyboard and mouse */ 172 fpga_reg = bus_space_read_1(iot_fpga, ioh_fpga, FPGA_BRDC); 173 fpga_reg |= FPGA_BRDC_INT; 174 bus_space_write_1(iot_fpga, ioh_fpga, FPGA_BRDC, fpga_reg); 175 176 /* Set interrupts to active high */ 177 fpga_reg = bus_space_read_1(iot_fpga, ioh_fpga, FPGA_INT_POL); 178 fpga_reg |= (FPGA_IRQ_KYBD | FPGA_IRQ_MOUSE); 179 bus_space_write_1(iot_fpga, ioh_fpga, FPGA_INT_POL, fpga_reg); 180 181 /* Set interrupts to level triggered */ 182 fpga_reg = bus_space_read_1(iot_fpga, ioh_fpga, FPGA_INT_TRIG); 183 fpga_reg |= (FPGA_IRQ_KYBD | FPGA_IRQ_MOUSE); 184 bus_space_write_1(iot_fpga, ioh_fpga, FPGA_INT_TRIG, fpga_reg); 185 186 /* Enable interrupts */ 187 fpga_reg = bus_space_read_1(iot_fpga, ioh_fpga, FPGA_INT_ENABLE); 188 fpga_reg |= (FPGA_IRQ_KYBD | FPGA_IRQ_MOUSE); 189 bus_space_write_1(iot_fpga, ioh_fpga, FPGA_INT_ENABLE, fpga_reg); 190 191 bus_space_unmap(&iot_fpga, ioh_fpga, 2); 192 } 193 #endif 194 195 } 196 197 static int 198 pbus_print(void *aux, const char *pnp) 199 { 200 struct pbus_attach_args *pba = aux; 201 202 if (pnp) 203 printf("%s at %s", pba->pb_name, pnp); 204 205 if (pba->pb_addr != PBUSCF_ADDR_DEFAULT) 206 aprint_normal(" addr 0x%08lx", pba->pb_addr); 207 if (pba->pb_irq != PBUSCF_IRQ_DEFAULT) 208 aprint_normal(" irq %d", pba->pb_irq); 209 210 return (UNCONF); 211 } 212
Indexes created Sat Sep 20 22:09:52 GMT 2025