1 /* $NetBSD: crime.c,v 1.34 2011/02/20 07:59:50 matt Exp $ */ 2 3 /* 4 * Copyright (c) 2004 Christopher SEKIYA 5 * Copyright (c) 2000 Soren S. Jorvang 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed for the 19 * NetBSD Project. See http://www.NetBSD.org/ for 20 * information about NetBSD. 21 * 4. The name of the author may not be used to endorse or promote products 22 * derived from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 26 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 27 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 28 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 29 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 30 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 33 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 /* 37 * O2 CRIME 38 */ 39 40 #include <sys/cdefs.h> 41 __KERNEL_RCSID(0, "$NetBSD: crime.c,v 1.34 2011/02/20 07:59:50 matt Exp $"); 42 43 #include <sys/param.h> 44 #include <sys/device.h> 45 #include <sys/systm.h> 46 #include <sys/kernel.h> 47 #include <sys/cpu.h> 48 49 #include <machine/locore.h> 50 #include <machine/autoconf.h> 51 #include <machine/bus.h> 52 #include <machine/intr.h> 53 #include <machine/machtype.h> 54 #include <machine/sysconf.h> 55 56 #include <sgimips/dev/crimevar.h> 57 #include <sgimips/dev/crimereg.h> 58 #include <sgimips/mace/macevar.h> 59 60 #include "locators.h" 61 62 #define DISABLE_CRIME_WATCHDOG 63 64 static int crime_match(struct device *, struct cfdata *, void *); 65 static void crime_attach(struct device *, struct device *, void *); 66 void crime_bus_reset(void); 67 void crime_watchdog_reset(void); 68 void crime_watchdog_disable(void); 69 void crime_intr(vaddr_t, uint32_t, uint32_t); 70 void *crime_intr_establish(int, int, int (*)(void *), void *); 71 72 static bus_space_tag_t crm_iot; 73 static bus_space_handle_t crm_ioh; 74 75 CFATTACH_DECL(crime, sizeof(struct crime_softc), 76 crime_match, crime_attach, NULL, NULL); 77 78 #define CRIME_NINTR 32 /* XXX */ 79 80 struct { 81 int (*func)(void *); 82 void *arg; 83 } crime[CRIME_NINTR]; 84 85 static int 86 crime_match(struct device *parent, struct cfdata *match, void *aux) 87 { 88 89 /* 90 * The CRIME is in the O2. 91 */ 92 if (mach_type == MACH_SGI_IP32) 93 return 1; 94 95 return 0; 96 } 97 98 static void 99 crime_attach(struct device *parent, struct device *self, void *aux) 100 { 101 struct mainbus_attach_args *ma = aux; 102 struct cpu_info * const ci = curcpu(); 103 uint64_t crm_id; 104 uint64_t baseline, endline; 105 uint32_t startctr, endctr, cps; 106 107 crm_iot = SGIMIPS_BUS_SPACE_CRIME; 108 109 if (bus_space_map(crm_iot, ma->ma_addr, 0 /* XXX */, 110 BUS_SPACE_MAP_LINEAR, &crm_ioh)) 111 panic("%s: can't map I/O space", __func__); 112 113 crm_id = bus_space_read_8(crm_iot, crm_ioh, CRIME_REV); 114 115 aprint_naive(": system ASIC"); 116 117 switch ((crm_id & CRIME_ID_IDBITS) >> CRIME_ID_IDSHIFT) { 118 case 0x0b: 119 aprint_normal(": rev 1.5"); 120 break; 121 122 case 0x0a: 123 if ((crm_id >> 32) == 0) 124 aprint_normal(": rev 1.1"); 125 else if ((crm_id >> 32) == 1) 126 aprint_normal(": rev 1.3"); 127 else 128 aprint_normal(": rev 1.4"); 129 break; 130 131 case 0x00: 132 aprint_normal(": Petty CRIME"); 133 break; 134 135 default: 136 aprint_normal(": Unknown CRIME"); 137 break; 138 } 139 140 aprint_normal(" (CRIME_ID: %" PRIu64 ")\n", crm_id); 141 142 /* reset CRIME CPU & memory error registers */ 143 crime_bus_reset(); 144 145 crime_watchdog_disable(); 146 147 #define CRIME_TIMER_FREQ 66666666 /* crime clock is 66.7MHz */ 148 149 baseline = bus_space_read_8(crm_iot, crm_ioh, CRIME_TIME) 150 & CRIME_TIME_MASK; 151 startctr = mips3_cp0_count_read(); 152 153 /* read both cp0 and crime counters for 100ms */ 154 do { 155 endline = bus_space_read_8(crm_iot, crm_ioh, CRIME_TIME) 156 & CRIME_TIME_MASK; 157 endctr = mips3_cp0_count_read(); 158 } while (endline - baseline < (CRIME_TIMER_FREQ / 10)); 159 160 cps = (endctr - startctr) * 10; 161 ci->ci_cpu_freq = cps; 162 ci->ci_cctr_freq = cps; 163 if (mips_options.mips_cpu_flags & CPU_MIPS_DOUBLE_COUNT) 164 ci->ci_cpu_freq *= 2; 165 ci->ci_cycles_per_hz = (cps + (hz / 2)) / hz; 166 ci->ci_divisor_delay = (cps + (1000000 / 2)) / 1000000; 167 168 /* Turn on memory error and crime error interrupts. 169 All others turned on as devices are registered. */ 170 bus_space_write_8(crm_iot, crm_ioh, CRIME_INTMASK, 171 CRIME_INT_MEMERR | 172 CRIME_INT_CRMERR | 173 CRIME_INT_VICE | 174 CRIME_INT_VID_OUT | 175 CRIME_INT_VID_IN2 | 176 CRIME_INT_VID_IN1); 177 bus_space_write_8(crm_iot, crm_ioh, CRIME_INTSTAT, 0); 178 bus_space_write_8(crm_iot, crm_ioh, CRIME_SOFTINT, 0); 179 bus_space_write_8(crm_iot, crm_ioh, CRIME_HARDINT, 0); 180 181 platform.bus_reset = crime_bus_reset; 182 platform.watchdog_reset = crime_watchdog_reset; 183 platform.watchdog_disable = crime_watchdog_disable; 184 platform.watchdog_enable = crime_watchdog_reset; 185 platform.intr_establish = crime_intr_establish; 186 platform.intr0 = crime_intr; 187 } 188 189 /* 190 * XXX: sharing interrupts? 191 */ 192 193 void * 194 crime_intr_establish(int irq, int level, int (*func)(void *), void *arg) 195 { 196 197 if (irq < 16) 198 return mace_intr_establish(irq, level, func, arg); 199 200 if (crime[irq].func != NULL) 201 return NULL; /* panic("Cannot share CRIME interrupts!"); */ 202 203 crime[irq].func = func; 204 crime[irq].arg = arg; 205 206 crime_intr_mask(irq); 207 208 return (void *)&crime[irq]; 209 } 210 211 void 212 crime_intr(vaddr_t pc, uint32_t status, uint32_t ipending) 213 { 214 uint64_t crime_intmask; 215 uint64_t crime_intstat; 216 uint64_t crime_ipending; 217 uint64_t address, stat; 218 int i; 219 220 crime_intmask = bus_space_read_8(crm_iot, crm_ioh, CRIME_INTMASK); 221 crime_intstat = bus_space_read_8(crm_iot, crm_ioh, CRIME_INTSTAT); 222 crime_ipending = (crime_intstat & crime_intmask); 223 224 if (crime_ipending & 0xffff) 225 mace_intr(crime_ipending & 0xffff); 226 227 if (crime_ipending & 0xffff0000) { 228 /* 229 * CRIME interrupts for CPU and memory errors 230 */ 231 if (crime_ipending & CRIME_INT_MEMERR) { 232 address = bus_space_read_8(crm_iot, crm_ioh, 233 CRIME_MEM_ERROR_ADDR); 234 stat = bus_space_read_8(crm_iot, crm_ioh, 235 CRIME_MEM_ERROR_STAT); 236 printf("crime: memory error address %" PRIu64 237 " status %" PRIu64 "\n", address << 2, stat); 238 crime_bus_reset(); 239 } 240 241 if (crime_ipending & CRIME_INT_CRMERR) { 242 stat = bus_space_read_8(crm_iot, crm_ioh, 243 CRIME_CPU_ERROR_STAT); 244 printf("crime: cpu error %" PRIu64 " at" 245 " address %" PRIu64 "\n", stat, 246 bus_space_read_8(crm_iot, crm_ioh, 247 CRIME_CPU_ERROR_ADDR)); 248 crime_bus_reset(); 249 } 250 } 251 252 crime_ipending &= ~0xffff; 253 254 if (crime_ipending) { 255 for (i = 16; i < CRIME_NINTR; i++) { 256 if ((crime_ipending & (1 << i)) && 257 crime[i].func != NULL) 258 (*crime[i].func)(crime[i].arg); 259 } 260 } 261 } 262 263 void 264 crime_intr_mask(unsigned int intr) 265 { 266 uint64_t mask; 267 268 mask = bus_space_read_8(crm_iot, crm_ioh, CRIME_INTMASK); 269 mask |= (1 << intr); 270 bus_space_write_8(crm_iot, crm_ioh, CRIME_INTMASK, mask); 271 } 272 273 void 274 crime_intr_unmask(unsigned int intr) 275 { 276 uint64_t mask; 277 278 mask = bus_space_read_8(crm_iot, crm_ioh, CRIME_INTMASK); 279 mask &= ~(1 << intr); 280 bus_space_write_8(crm_iot, crm_ioh, CRIME_INTMASK, mask); 281 } 282 283 void 284 crime_bus_reset(void) 285 { 286 287 bus_space_write_8(crm_iot, crm_ioh, CRIME_CPU_ERROR_STAT, 0); 288 bus_space_write_8(crm_iot, crm_ioh, CRIME_MEM_ERROR_STAT, 0); 289 } 290 291 void 292 crime_watchdog_reset(void) 293 { 294 295 #ifdef DISABLE_CRIME_WATCHDOG 296 bus_space_write_8(crm_iot, crm_ioh, CRIME_WATCHDOG, 0); 297 #else 298 /* enable watchdog timer, clear it */ 299 bus_space_write_8(crm_iot, crm_ioh, 300 CRIME_CONTROL, CRIME_CONTROL_DOG_ENABLE); 301 bus_space_write_8(crm_iot, crm_ioh, CRIME_WATCHDOG, 0); 302 #endif 303 } 304 305 void 306 crime_watchdog_disable(void) 307 { 308 uint64_t reg; 309 310 bus_space_write_8(crm_iot, crm_ioh, CRIME_WATCHDOG, 0); 311 reg = bus_space_read_8(crm_iot, crm_ioh, CRIME_CONTROL) 312 & ~CRIME_CONTROL_DOG_ENABLE; 313 bus_space_write_8(crm_iot, crm_ioh, CRIME_CONTROL, reg); 314 } 315 316 void 317 crime_reboot(void) 318 { 319 320 bus_space_write_8(crm_iot, crm_ioh, CRIME_CONTROL, 321 CRIME_CONTROL_HARD_RESET); 322 for (;;) 323 ; 324 } 325