1 /* $NetBSD: ioc.c,v 1.12 2021/04/24 23:36:48 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 1.12 2021/04/24 23:36:48 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/malloc.h> 47 #include <sys/kernel.h> 48 #include <sys/socket.h> 49 #include <sys/ioctl.h> 50 #include <sys/errno.h> 51 #include <sys/syslog.h> 52 53 #include <uvm/uvm_extern.h> 54 55 #include <sys/bus.h> 56 #include <machine/cpu.h> 57 #include <machine/locore.h> 58 #include <machine/autoconf.h> 59 #include <machine/machtype.h> 60 61 #include <sgimips/ioc/iocreg.h> 62 #include <sgimips/ioc/iocvar.h> 63 64 #include "locators.h" 65 66 struct ioc_softc { 67 bus_space_tag_t sc_iot; 68 bus_space_handle_t sc_ioh; 69 }; 70 71 static int ioc_match(device_t, cfdata_t, void *); 72 static void ioc_attach(device_t, device_t, void *); 73 #if defined(notyet) 74 static int ioc_print(void *, const char *); 75 static int ioc_search(device_t, cfdata_t, const int *, void *); 76 #endif 77 78 CFATTACH_DECL_NEW(ioc, sizeof(struct ioc_softc), 79 ioc_match, ioc_attach, NULL, NULL); 80 81 #if defined(BLINK) 82 static callout_t ioc_blink_ch; 83 static void ioc_blink(void *); 84 #endif 85 86 static int 87 ioc_match(device_t parent, cfdata_t match, void *aux) 88 { 89 if (mach_type == MACH_SGI_IP22) 90 return 1; 91 92 return 0; 93 } 94 95 static void 96 ioc_attach(device_t parent, device_t self, void *aux) 97 { 98 struct ioc_softc *sc = device_private(self); 99 struct mainbus_attach_args *maa = aux; 100 u_int32_t sysid; 101 102 #ifdef BLINK 103 callout_init(&ioc_blink_ch, 0); 104 #endif 105 106 sc->sc_iot = normal_memt; 107 108 if (bus_space_map(sc->sc_iot, maa->ma_addr, 0x100, 109 BUS_SPACE_MAP_LINEAR, &sc->sc_ioh)) 110 panic("ioc_attach: could not allocate memory\n"); 111 112 sysid = bus_space_read_4(sc->sc_iot, sc->sc_ioh, IOC_SYSID) & 0x01; 113 114 if (sysid) 115 mach_subtype = MACH_SGI_IP22_FULLHOUSE; 116 else 117 mach_subtype = MACH_SGI_IP22_GUINNESS; 118 119 aprint_normal(": rev %d, machine %s, board rev %d\n", 120 ((sysid & IOC_SYSID_CHIPREV) >> IOC_SYSID_CHIPREV_SHIFT), 121 (sysid & IOC_SYSID_SYSTYPE) ? "Indigo2 (Fullhouse)" : 122 "Indy (Guinness)", 123 ((sysid & IOC_SYSID_BOARDREV) >> IOC_SYSID_BOARDREV_SHIFT)); 124 125 /* Reset IOC */ 126 bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_RESET, 127 IOC_RESET_PARALLEL | IOC_RESET_PCKBC | 128 IOC_RESET_EISA | IOC_RESET_ISDN | 129 IOC_RESET_LED_GREEN ); 130 131 /* 132 * Set the 10BaseT port to use UTP cable, set autoselect mode for 133 * the ethernet interface (AUI vs. TP), set the two serial ports 134 * to PC mode. 135 */ 136 bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_WRITE, 137 IOC_WRITE_ENET_AUTO | IOC_WRITE_ENET_UTP | 138 IOC_WRITE_PC_UART2 | IOC_WRITE_PC_UART1); 139 140 /* XXX: the firmware should have taken care of this already */ 141 #if 0 142 if (mach_subtype == MACH_SGI_IP22_GUINNESS) { 143 bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_GCSEL, 0xff); 144 bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_GCREG, 0xff); 145 } 146 #endif 147 148 #if defined(BLINK) 149 ioc_blink(sc); 150 #endif 151 152 #if defined(notyet) 153 /* 154 * pckbc, zstty, and lpt should attach under the IOC. This begs the 155 * question of how we sort things out with ip20, which has no IOC. 156 * For now, we pretend that everything attaches at HPC and ignore 157 * the IOC. 158 */ 159 160 config_search(self, NULL, 161 CFARG_SEARCH, ioc_search, 162 CFARG_EOL); 163 #endif 164 } 165 166 #if defined(notyet) 167 static int 168 ioc_print(void *aux, const char *pnp) 169 { 170 struct ioc_attach_args *iaa = aux; 171 172 if (pnp != 0) 173 return QUIET; 174 175 if (iaa->iaa_offset != IOCCF_OFFSET_DEFAULT) 176 aprint_normal(" offset 0x%lx", iaa->iaa_offset); 177 if (iaa->iaa_intr != IOCCF_INTR_DEFAULT) 178 aprint_normal(" intr %d", iaa->iaa_intr); 179 180 return UNCONF; 181 } 182 183 static int 184 ioc_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 185 { 186 struct ioc_softc *sc = device_private(parent); 187 struct ioc_attach_args iaa; 188 int tryagain; 189 190 do { 191 iaa.iaa_offset = cf->cf_loc[IOCCF_OFFSET]; 192 iaa.iaa_intr = cf->cf_loc[IOCCF_INTR]; 193 iaa.iaa_st = normal_memt; 194 iaa.iaa_sh = sc->sc_ioh; /* XXX */ 195 196 tryagain = 0; 197 if (config_probe(parent, cf, &iaa)) { 198 config_attach(parent, cf, &iaa, ioc_print, CFARG_EOL); 199 tryagain = (cf->cf_fstate == FSTATE_STAR); 200 } 201 } while (tryagain); 202 203 return 0; 204 } 205 #endif 206 207 #if defined(BLINK) 208 static void 209 ioc_blink(void *self) 210 { 211 struct ioc_softc *sc = device_private(self); 212 register int s; 213 int value; 214 215 s = splhigh(); 216 217 /* This is a bit odd. To strobe the green LED, we have to toggle the 218 red control bit. */ 219 220 value = bus_space_read_4(sc->sc_iot, sc->sc_ioh, IOC_RESET) & 0xff; 221 value ^= IOC_RESET_LED_RED; 222 bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_RESET, value); 223 splx(s); 224 /* 225 * Blink rate is: 226 * full cycle every second if completely idle (loadav = 0) 227 * full cycle every 2 seconds if loadav = 1 228 * full cycle every 3 seconds if loadav = 2 229 * etc. 230 */ 231 s = (((averunnable.ldavg[0] + FSCALE) * hz) >> (FSHIFT + 1)); 232 callout_reset(&ioc_blink_ch, s, ioc_blink, sc); 233 234 } 235 #endif 236