1 /* $NetBSD: ioc.c,v 1.15 2026/04/30 03:12:39 adrian 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 1.15 2026/04/30 03:12:39 adrian 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 /* 114 * NOTE: this has to happen before mach_subtype is used - 115 * including for dev/int.c. So it's initialised earlier 116 * in sgimips/machdep.c for early boot. 117 */ 118 if (sysid) 119 mach_subtype = MACH_SGI_IP22_FULLHOUSE; 120 else 121 mach_subtype = MACH_SGI_IP22_GUINNESS; 122 123 aprint_normal(": rev %d, machine %s, board rev %d\n", 124 ((sysid & IOC_SYSID_CHIPREV) >> IOC_SYSID_CHIPREV_SHIFT), 125 (sysid & IOC_SYSID_SYSTYPE) ? "Indigo2 (Fullhouse)" : 126 "Indy (Guinness)", 127 ((sysid & IOC_SYSID_BOARDREV) >> IOC_SYSID_BOARDREV_SHIFT)); 128 129 /* Reset IOC */ 130 bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_RESET, 131 IOC_RESET_PARALLEL | IOC_RESET_PCKBC | 132 IOC_RESET_EISA | IOC_RESET_ISDN | 133 IOC_RESET_LED_GREEN ); 134 135 /* 136 * Set the 10BaseT port to use UTP cable, set autoselect mode for 137 * the ethernet interface (AUI vs. TP), set the two serial ports 138 * to PC mode. 139 */ 140 bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_WRITE, 141 IOC_WRITE_ENET_AUTO | IOC_WRITE_ENET_UTP | 142 IOC_WRITE_PC_UART2 | IOC_WRITE_PC_UART1); 143 144 /* XXX: the firmware should have taken care of this already */ 145 #if 0 146 if (mach_subtype == MACH_SGI_IP22_GUINNESS) { 147 bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_GCSEL, 0xff); 148 bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_GCREG, 0xff); 149 } 150 #endif 151 152 #if defined(BLINK) 153 ioc_blink(sc); 154 #endif 155 156 #if defined(notyet) 157 /* 158 * pckbc, zstty, and lpt should attach under the IOC. This begs the 159 * question of how we sort things out with ip20, which has no IOC. 160 * For now, we pretend that everything attaches at HPC and ignore 161 * the IOC. 162 */ 163 164 config_search(self, NULL, 165 CFARGS(.search = ioc_search)); 166 #endif 167 } 168 169 #if defined(notyet) 170 static int 171 ioc_print(void *aux, const char *pnp) 172 { 173 struct ioc_attach_args *iaa = aux; 174 175 if (pnp != 0) 176 return QUIET; 177 178 if (iaa->iaa_offset != IOCCF_OFFSET_DEFAULT) 179 aprint_normal(" offset 0x%lx", iaa->iaa_offset); 180 if (iaa->iaa_intr != IOCCF_INTR_DEFAULT) 181 aprint_normal(" intr %d", iaa->iaa_intr); 182 183 return UNCONF; 184 } 185 186 static int 187 ioc_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 188 { 189 struct ioc_softc *sc = device_private(parent); 190 struct ioc_attach_args iaa; 191 int tryagain; 192 193 do { 194 iaa.iaa_offset = cf->cf_loc[IOCCF_OFFSET]; 195 iaa.iaa_intr = cf->cf_loc[IOCCF_INTR]; 196 iaa.iaa_st = normal_memt; 197 iaa.iaa_sh = sc->sc_ioh; /* XXX */ 198 199 tryagain = 0; 200 if (config_probe(parent, cf, &iaa)) { 201 config_attach(parent, cf, &iaa, ioc_print, CFARGS_NONE); 202 tryagain = (cf->cf_fstate == FSTATE_STAR); 203 } 204 } while (tryagain); 205 206 return 0; 207 } 208 #endif 209 210 #if defined(BLINK) 211 static void 212 ioc_blink(void *self) 213 { 214 struct ioc_softc *sc = device_private(self); 215 register int s; 216 int value; 217 218 s = splhigh(); 219 220 /* This is a bit odd. To strobe the green LED, we have to toggle the 221 red control bit. */ 222 223 value = bus_space_read_4(sc->sc_iot, sc->sc_ioh, IOC_RESET) & 0xff; 224 value ^= IOC_RESET_LED_RED; 225 bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_RESET, value); 226 splx(s); 227 /* 228 * Blink rate is: 229 * full cycle every second if completely idle (loadav = 0) 230 * full cycle every 2 seconds if loadav = 1 231 * full cycle every 3 seconds if loadav = 2 232 * etc. 233 */ 234 s = (((averunnable.ldavg[0] + FSCALE) * hz) >> (FSHIFT + 1)); 235 callout_reset(&ioc_blink_ch, s, ioc_blink, sc); 236 237 } 238 #endif 239
Indexes created Sun Oct 25 00:26:45 UTC 2026