1 /* $NetBSD: ioc.c,v 1.14 2023/12/20 15:29:07 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 2003 Christopher Sekiya 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed for the 18 * NetBSD Project. See http://www.NetBSD.org/ for 19 * information about NetBSD. 20 * 4. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 /* 36 * ip20/22/24 I/O Controller (IOC) 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: ioc.c,v 1.14 2023/12/20 15:29:07 thorpej Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/device.h> 45 #include <sys/callout.h> 46 #include <sys/kernel.h> 47 #include <sys/socket.h> 48 #include <sys/ioctl.h> 49 #include <sys/errno.h> 50 #include <sys/syslog.h> 51 52 #include <uvm/uvm_extern.h> 53 54 #include <sys/bus.h> 55 #include <machine/cpu.h> 56 #include <machine/locore.h> 57 #include <machine/autoconf.h> 58 #include <machine/machtype.h> 59 60 #include <sgimips/ioc/iocreg.h> 61 #include <sgimips/ioc/iocvar.h> 62 63 #include "locators.h" 64 65 struct ioc_softc { 66 bus_space_tag_t sc_iot; 67 bus_space_handle_t sc_ioh; 68 }; 69 70 static int ioc_match(device_t, cfdata_t, void *); 71 static void ioc_attach(device_t, device_t, void *); 72 #if defined(notyet) 73 static int ioc_print(void *, const char *); 74 static int ioc_search(device_t, cfdata_t, const int *, void *); 75 #endif 76 77 CFATTACH_DECL_NEW(ioc, sizeof(struct ioc_softc), 78 ioc_match, ioc_attach, NULL, NULL); 79 80 #if defined(BLINK) 81 static callout_t ioc_blink_ch; 82 static void ioc_blink(void *); 83 #endif 84 85 static int 86 ioc_match(device_t parent, cfdata_t match, void *aux) 87 { 88 if (mach_type == MACH_SGI_IP22) 89 return 1; 90 91 return 0; 92 } 93 94 static void 95 ioc_attach(device_t parent, device_t self, void *aux) 96 { 97 struct ioc_softc *sc = device_private(self); 98 struct mainbus_attach_args *maa = aux; 99 u_int32_t sysid; 100 101 #ifdef BLINK 102 callout_init(&ioc_blink_ch, 0); 103 #endif 104 105 sc->sc_iot = normal_memt; 106 107 if (bus_space_map(sc->sc_iot, maa->ma_addr, 0x100, 108 BUS_SPACE_MAP_LINEAR, &sc->sc_ioh)) 109 panic("ioc_attach: could not allocate memory\n"); 110 111 sysid = bus_space_read_4(sc->sc_iot, sc->sc_ioh, IOC_SYSID) & 0x01; 112 113 if (sysid) 114 mach_subtype = MACH_SGI_IP22_FULLHOUSE; 115 else 116 mach_subtype = MACH_SGI_IP22_GUINNESS; 117 118 aprint_normal(": rev %d, machine %s, board rev %d\n", 119 ((sysid & IOC_SYSID_CHIPREV) >> IOC_SYSID_CHIPREV_SHIFT), 120 (sysid & IOC_SYSID_SYSTYPE) ? "Indigo2 (Fullhouse)" : 121 "Indy (Guinness)", 122 ((sysid & IOC_SYSID_BOARDREV) >> IOC_SYSID_BOARDREV_SHIFT)); 123 124 /* Reset IOC */ 125 bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_RESET, 126 IOC_RESET_PARALLEL | IOC_RESET_PCKBC | 127 IOC_RESET_EISA | IOC_RESET_ISDN | 128 IOC_RESET_LED_GREEN ); 129 130 /* 131 * Set the 10BaseT port to use UTP cable, set autoselect mode for 132 * the ethernet interface (AUI vs. TP), set the two serial ports 133 * to PC mode. 134 */ 135 bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_WRITE, 136 IOC_WRITE_ENET_AUTO | IOC_WRITE_ENET_UTP | 137 IOC_WRITE_PC_UART2 | IOC_WRITE_PC_UART1); 138 139 /* XXX: the firmware should have taken care of this already */ 140 #if 0 141 if (mach_subtype == MACH_SGI_IP22_GUINNESS) { 142 bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_GCSEL, 0xff); 143 bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_GCREG, 0xff); 144 } 145 #endif 146 147 #if defined(BLINK) 148 ioc_blink(sc); 149 #endif 150 151 #if defined(notyet) 152 /* 153 * pckbc, zstty, and lpt should attach under the IOC. This begs the 154 * question of how we sort things out with ip20, which has no IOC. 155 * For now, we pretend that everything attaches at HPC and ignore 156 * the IOC. 157 */ 158 159 config_search(self, NULL, 160 CFARGS(.search = ioc_search)); 161 #endif 162 } 163 164 #if defined(notyet) 165 static int 166 ioc_print(void *aux, const char *pnp) 167 { 168 struct ioc_attach_args *iaa = aux; 169 170 if (pnp != 0) 171 return QUIET; 172 173 if (iaa->iaa_offset != IOCCF_OFFSET_DEFAULT) 174 aprint_normal(" offset 0x%lx", iaa->iaa_offset); 175 if (iaa->iaa_intr != IOCCF_INTR_DEFAULT) 176 aprint_normal(" intr %d", iaa->iaa_intr); 177 178 return UNCONF; 179 } 180 181 static int 182 ioc_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 183 { 184 struct ioc_softc *sc = device_private(parent); 185 struct ioc_attach_args iaa; 186 int tryagain; 187 188 do { 189 iaa.iaa_offset = cf->cf_loc[IOCCF_OFFSET]; 190 iaa.iaa_intr = cf->cf_loc[IOCCF_INTR]; 191 iaa.iaa_st = normal_memt; 192 iaa.iaa_sh = sc->sc_ioh; /* XXX */ 193 194 tryagain = 0; 195 if (config_probe(parent, cf, &iaa)) { 196 config_attach(parent, cf, &iaa, ioc_print, CFARGS_NONE); 197 tryagain = (cf->cf_fstate == FSTATE_STAR); 198 } 199 } while (tryagain); 200 201 return 0; 202 } 203 #endif 204 205 #if defined(BLINK) 206 static void 207 ioc_blink(void *self) 208 { 209 struct ioc_softc *sc = device_private(self); 210 register int s; 211 int value; 212 213 s = splhigh(); 214 215 /* This is a bit odd. To strobe the green LED, we have to toggle the 216 red control bit. */ 217 218 value = bus_space_read_4(sc->sc_iot, sc->sc_ioh, IOC_RESET) & 0xff; 219 value ^= IOC_RESET_LED_RED; 220 bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_RESET, value); 221 splx(s); 222 /* 223 * Blink rate is: 224 * full cycle every second if completely idle (loadav = 0) 225 * full cycle every 2 seconds if loadav = 1 226 * full cycle every 3 seconds if loadav = 2 227 * etc. 228 */ 229 s = (((averunnable.ldavg[0] + FSCALE) * hz) >> (FSHIFT + 1)); 230 callout_reset(&ioc_blink_ch, s, ioc_blink, sc); 231 232 } 233 #endif 234
Indexes created Mon Sep 22 05:09:51 GMT 2025