news5000.c revision 1.7
1 /* $NetBSD: news5000.c,v 1.7 2000/12/03 01:42:30 matt Exp $ */ 2 3 /*- 4 * Copyright (C) 1999 SHIMIZU Ryo. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/param.h> 30 #include <sys/systm.h> 31 #include <sys/kernel.h> 32 33 #include <machine/adrsmap.h> 34 #include <machine/cpu.h> 35 #include <machine/intr.h> 36 37 #include <newsmips/apbus/apbusvar.h> 38 #include <newsmips/newsmips/machid.h> 39 40 extern void (*readmicrotime) (struct timeval *tvp); 41 42 static void level1_intr (void); 43 static void level0_intr (void); 44 45 static void enable_intr_5000 (void); 46 static void disable_intr_5000 (void); 47 static void readmicrotime_5000 (struct timeval *); 48 static void readidrom_5000 (u_char *); 49 50 void news5000_init (void); 51 52 static u_int freerun_off; 53 54 /* 55 * Handle news5000 interrupts. 56 */ 57 void 58 news5000_intr(status, cause, pc, ipending) 59 u_int status; /* status register at time of the exception */ 60 u_int cause; /* cause register at time of exception */ 61 u_int pc; /* program counter where to continue */ 62 u_int ipending; 63 { 64 if (ipending & MIPS_INT_MASK_2) { 65 #ifdef DEBUG 66 static int l2cnt = 0; 67 #endif 68 u_int int2stat; 69 struct clockframe cf; 70 71 int2stat = *(volatile u_int *)NEWS5000_INTST2; 72 73 #ifdef DEBUG 74 l2cnt++; 75 if (l2cnt == 50) { 76 *(volatile u_int *)NEWS5000_LED_SEC = 1; 77 } 78 if (l2cnt == 100) { 79 *(volatile u_int *)NEWS5000_LED_SEC = 0; 80 l2cnt = 0; 81 } 82 #endif 83 84 if (int2stat & NEWS5000_INT2_TIMER0) { 85 *(volatile u_int *)NEWS5000_TIMER0 = 1; 86 freerun_off = *(volatile u_int *)NEWS5000_FREERUN; 87 88 cf.pc = pc; 89 cf.sr = status; 90 91 hardclock(&cf); 92 intrcnt[HARDCLOCK_INTR]++; 93 } 94 95 apbus_wbflush(); 96 cause &= ~MIPS_INT_MASK_2; 97 } 98 /* If clock interrupts were enabled, re-enable them ASAP. */ 99 _splset(MIPS_SR_INT_IE | (status & MIPS_INT_MASK_2)); 100 101 if (ipending & MIPS_INT_MASK_5) { 102 u_int int5stat = *(volatile u_int *)NEWS5000_INTST5; 103 printf("level5 interrupt (%08x)\n", int5stat); 104 105 apbus_wbflush(); 106 cause &= ~MIPS_INT_MASK_5; 107 } 108 109 if (ipending & MIPS_INT_MASK_4) { 110 u_int int4stat = *(volatile u_int *)NEWS5000_INTST4; 111 printf("level4 interrupt (%08x)\n", int4stat); 112 if (int4stat & NEWS5000_INT4_APBUS) { 113 u_int stat = *(volatile u_int *)NEWS5000_APBUS_INTST; 114 printf("APbus error 0x%04x\n", stat & 0xffff); 115 if (stat & NEWS5000_APBUS_INT_DMAADDR) { 116 printf("DMA Address Error: slot=%x, addr=0x%08x\n", 117 *(volatile u_int *)NEWS5000_APBUS_DER_S, 118 *(volatile u_int *)NEWS5000_APBUS_DER_A); 119 } 120 if (stat & NEWS5000_APBUS_INT_RDTIMEO) 121 printf("IO Read Timeout: addr=0x%08x\n", 122 *(volatile u_int *)NEWS5000_APBUS_BER_A); 123 if (stat & NEWS5000_APBUS_INT_WRTIMEO) 124 printf("IO Write Timeout: addr=0x%08x\n", 125 *(volatile u_int *)NEWS5000_APBUS_BER_A); 126 *(volatile u_int *)0xb4c00014 = stat; 127 } 128 129 apbus_wbflush(); 130 cause &= ~MIPS_INT_MASK_4; 131 } 132 133 if (ipending & MIPS_INT_MASK_3) { 134 u_int int3stat = *(volatile u_int *)NEWS5000_INTST3; 135 printf("level3 interrupt (%08x)\n", int3stat); 136 137 apbus_wbflush(); 138 cause &= ~MIPS_INT_MASK_3; 139 } 140 141 if (ipending & MIPS_INT_MASK_1) { 142 level1_intr(); 143 apbus_wbflush(); 144 cause &= ~MIPS_INT_MASK_1; 145 } 146 147 if (ipending & MIPS_INT_MASK_0) { 148 level0_intr(); 149 apbus_wbflush(); 150 cause &= ~MIPS_INT_MASK_0; 151 } 152 153 _splset((status & ~cause & MIPS_HARD_INT_MASK) | MIPS_SR_INT_IE); 154 } 155 156 157 static void 158 level1_intr(void) 159 { 160 u_int int1stat; 161 162 int1stat = *(volatile u_int *)NEWS5000_INTST1; 163 164 if (int1stat) { 165 if (apbus_intr_call(1, int1stat) == 0) 166 printf("level1_intr: no handler (mask 0x%04x)\n", 167 int1stat); 168 } else 169 printf("level1 stray interrupt?\n"); 170 } 171 172 static void 173 level0_intr(void) 174 { 175 u_int int0stat; 176 177 int0stat = *(volatile u_int *)NEWS5000_INTST0; 178 179 if (int0stat) { 180 if (apbus_intr_call(0, int0stat) == 0) 181 printf("level0_intr: no handler (mask 0x%04x)\n", 182 int0stat); 183 } else 184 printf("level0 stray interrupt?\n"); 185 } 186 187 static void 188 enable_intr_5000(void) 189 { 190 191 /* INT0 and INT1 has been enabled at attach */ 192 /* INT2 -- It's not a time to enable timer yet. */ 193 /* INT3 -- not used for NWS-5000 */ 194 195 *(volatile u_int *)NEWS5000_INTEN4 = NEWS5000_INT4_APBUS; 196 *(volatile u_int *)NEWS5000_APBUS_INTMSK = 0xffff; 197 198 /* INT5 -- currently ignored */ 199 *(volatile u_int *)NEWS5000_INTEN5 = 0; 200 } 201 202 static void 203 disable_intr_5000(void) 204 { 205 *(volatile u_int *)NEWS5000_INTEN0 = 0; 206 *(volatile u_int *)NEWS5000_INTEN1 = 0; 207 *(volatile u_int *)NEWS5000_INTEN2 = 0; 208 *(volatile u_int *)NEWS5000_INTEN3 = 0; 209 *(volatile u_int *)NEWS5000_INTEN4 = 0; 210 *(volatile u_int *)NEWS5000_INTEN5 = 0; 211 } 212 213 static void 214 readmicrotime_5000(tvp) 215 struct timeval *tvp; 216 { 217 u_int freerun; 218 219 *tvp = time; 220 freerun = *(volatile u_int *)NEWS5000_FREERUN; 221 freerun -= freerun_off; 222 if (freerun > 1000000) 223 freerun = 1000000; 224 tvp->tv_usec += freerun; 225 if (tvp->tv_usec >= 1000000) { 226 tvp->tv_usec -= 1000000; 227 tvp->tv_sec++; 228 } 229 } 230 231 static void 232 readidrom_5000(rom) 233 u_char *rom; 234 { 235 u_int32_t *p = (void *)NEWS5000_IDROM; 236 int i; 237 238 for (i = 0; i < sizeof (struct idrom); i++, p += 2) 239 *rom++ = ((*p & 0x0f) << 4) + (*(p + 1) & 0x0f); 240 } 241 242 extern struct idrom idrom; 243 244 void 245 news5000_init(void) 246 { 247 enable_intr = enable_intr_5000; 248 disable_intr = disable_intr_5000; 249 250 readidrom_5000((u_char *)&idrom); 251 readmicrotime = readmicrotime_5000; 252 hostid = idrom.id_serial; 253 } 254
Indexes created Thu Oct 02 10:09:58 GMT 2025