ioc.c revision 1.9
1 /* $NetBSD: ioc.c,v 1.9 2011/07/01 18:53:47 dyoung 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 1.9 2011/07/01 18:53:47 dyoung 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 struct device sc_dev; 68 69 bus_space_tag_t sc_iot; 70 bus_space_handle_t sc_ioh; 71 }; 72 73 static int ioc_match(struct device *, struct cfdata *, void *); 74 static void ioc_attach(struct device *, struct device *, void *); 75 #if defined(notyet) 76 static int ioc_print(void *, const char *); 77 static int ioc_search(struct device *, struct cfdata *, 78 const int *, void *); 79 #endif 80 81 CFATTACH_DECL(ioc, sizeof(struct ioc_softc), 82 ioc_match, ioc_attach, NULL, NULL); 83 84 #if defined(BLINK) 85 static callout_t ioc_blink_ch; 86 static void ioc_blink(void *); 87 #endif 88 89 static int 90 ioc_match(struct device * parent, struct cfdata * match, void *aux) 91 { 92 if (mach_type == MACH_SGI_IP22) 93 return 1; 94 95 return 0; 96 } 97 98 static void 99 ioc_attach(struct device * parent, struct device * self, void *aux) 100 { 101 struct ioc_softc *sc = (struct ioc_softc *) self; 102 struct mainbus_attach_args *maa = aux; 103 u_int32_t sysid; 104 105 #ifdef BLINK 106 callout_init(&ioc_blink_ch, 0); 107 #endif 108 109 sc->sc_iot = SGIMIPS_BUS_SPACE_HPC; 110 111 if (bus_space_map(sc->sc_iot, maa->ma_addr, 0, 112 BUS_SPACE_MAP_LINEAR, &sc->sc_ioh)) 113 panic("ioc_attach: could not allocate memory\n"); 114 115 sysid = bus_space_read_4(sc->sc_iot, sc->sc_ioh, IOC_SYSID) & 0x01; 116 117 if (sysid) 118 mach_subtype = MACH_SGI_IP22_FULLHOUSE; 119 else 120 mach_subtype = MACH_SGI_IP22_GUINNESS; 121 122 aprint_normal(": rev %d, machine %s, board rev %d\n", 123 ((sysid & IOC_SYSID_CHIPREV) >> IOC_SYSID_CHIPREV_SHIFT), 124 (sysid & IOC_SYSID_SYSTYPE) ? "Indigo2 (Fullhouse)" : 125 "Indy (Guinness)", 126 ((sysid & IOC_SYSID_BOARDREV) >> IOC_SYSID_BOARDREV_SHIFT)); 127 128 /* Reset IOC */ 129 bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_RESET, 130 IOC_RESET_PARALLEL | IOC_RESET_PCKBC | 131 IOC_RESET_EISA | IOC_RESET_ISDN | 132 IOC_RESET_LED_GREEN ); 133 134 /* 135 * Set the 10BaseT port to use UTP cable, set autoselect mode for 136 * the ethernet interface (AUI vs. TP), set the two serial ports 137 * to PC mode. 138 */ 139 bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_WRITE, 140 IOC_WRITE_ENET_AUTO | IOC_WRITE_ENET_UTP | 141 IOC_WRITE_PC_UART2 | IOC_WRITE_PC_UART1); 142 143 /* XXX: the firmware should have taken care of this already */ 144 #if 0 145 if (mach_subtype == MACH_SGI_IP22_GUINNESS) { 146 bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_GCSEL, 0xff); 147 bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_GCREG, 0xff); 148 } 149 #endif 150 151 #if defined(BLINK) 152 ioc_blink(sc); 153 #endif 154 155 #if defined(notyet) 156 /* 157 * pckbc, zstty, and lpt should attach under the IOC. This begs the 158 * question of how we sort things out with ip20, which has no IOC. 159 * For now, we pretend that everything attaches at HPC and ignore 160 * the IOC. 161 */ 162 163 config_search_ia(ioc_search, self, "ioc", NULL); 164 #endif 165 } 166 167 #if defined(notyet) 168 static int 169 ioc_print(void *aux, const char *pnp) 170 { 171 struct ioc_attach_args *iaa = aux; 172 173 if (pnp != 0) 174 return QUIET; 175 176 if (iaa->iaa_offset != IOCCF_OFFSET_DEFAULT) 177 aprint_normal(" offset 0x%lx", iaa->iaa_offset); 178 if (iaa->iaa_intr != IOCCF_INTR_DEFAULT) 179 aprint_normal(" intr %d", iaa->iaa_intr); 180 181 return UNCONF; 182 } 183 184 static int 185 ioc_search(struct device * parent, struct cfdata * cf, 186 const int *ldesc, void *aux) 187 { 188 struct ioc_softc *sc = (struct ioc_softc *) parent; 189 struct ioc_attach_args iaa; 190 int tryagain; 191 192 do { 193 iaa.iaa_offset = cf->cf_loc[IOCCF_OFFSET]; 194 iaa.iaa_intr = cf->cf_loc[IOCCF_INTR]; 195 iaa.iaa_st = SGIMIPS_BUS_SPACE_HPC; 196 iaa.iaa_sh = sc->sc_ioh; /* XXX */ 197 198 tryagain = 0; 199 if (config_match(parent, cf, &iaa) > 0) { 200 config_attach(parent, cf, &iaa, ioc_print); 201 tryagain = (cf->cf_fstate == FSTATE_STAR); 202 } 203 } while (tryagain); 204 205 return 0; 206 } 207 #endif 208 209 #if defined(BLINK) 210 static void 211 ioc_blink(void *self) 212 { 213 struct ioc_softc *sc = (struct ioc_softc *) self; 214 register int s; 215 int value; 216 217 s = splhigh(); 218 219 /* This is a bit odd. To strobe the green LED, we have to toggle the 220 red control bit. */ 221 222 value = bus_space_read_4(sc->sc_iot, sc->sc_ioh, IOC_RESET) & 0xff; 223 value ^= IOC_RESET_LED_RED; 224 bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_RESET, value); 225 splx(s); 226 /* 227 * Blink rate is: 228 * full cycle every second if completely idle (loadav = 0) 229 * full cycle every 2 seconds if loadav = 1 230 * full cycle every 3 seconds if loadav = 2 231 * etc. 232 */ 233 s = (((averunnable.ldavg[0] + FSCALE) * hz) >> (FSHIFT + 1)); 234 callout_reset(&ioc_blink_ch, s, ioc_blink, sc); 235 236 } 237 #endif 238
Indexes created Tue Sep 23 14:10:03 GMT 2025