news5000.c revision 1.12
1 /* $NetBSD: news5000.c,v 1.12 2003/10/25 04:07:28 tsutsui 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/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: news5000.c,v 1.12 2003/10/25 04:07:28 tsutsui Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/kernel.h> 35 36 #include <machine/adrsmap.h> 37 #include <machine/cpu.h> 38 #include <machine/intr.h> 39 40 #include <newsmips/apbus/apbusvar.h> 41 #include <newsmips/newsmips/machid.h> 42 43 extern void (*readmicrotime) (struct timeval *tvp); 44 45 static void news5000_level1_intr(void); 46 static void news5000_level0_intr(void); 47 48 static void news5000_enable_intr(void); 49 static void news5000_disable_intr(void); 50 static void news5000_enable_timer(void); 51 static void news5000_readmicrotime(struct timeval *); 52 static void news5000_readidrom(u_char *); 53 54 static u_int freerun_off; 55 56 /* 57 * Handle news5000 interrupts. 58 */ 59 void 60 news5000_intr(status, cause, pc, ipending) 61 u_int status; /* status register at time of the exception */ 62 u_int cause; /* cause register at time of exception */ 63 u_int pc; /* program counter where to continue */ 64 u_int ipending; 65 { 66 if (ipending & MIPS_INT_MASK_2) { 67 #ifdef DEBUG 68 static int l2cnt = 0; 69 #endif 70 u_int int2stat; 71 struct clockframe cf; 72 73 int2stat = *(volatile u_int *)NEWS5000_INTST2; 74 75 #ifdef DEBUG 76 l2cnt++; 77 if (l2cnt == 50) { 78 *(volatile u_int *)NEWS5000_LED_SEC = 1; 79 } 80 if (l2cnt == 100) { 81 *(volatile u_int *)NEWS5000_LED_SEC = 0; 82 l2cnt = 0; 83 } 84 #endif 85 86 if (int2stat & NEWS5000_INT2_TIMER0) { 87 *(volatile u_int *)NEWS5000_TIMER0 = 1; 88 freerun_off = *(volatile u_int *)NEWS5000_FREERUN; 89 90 cf.pc = pc; 91 cf.sr = status; 92 93 hardclock(&cf); 94 intrcnt[HARDCLOCK_INTR]++; 95 } 96 97 apbus_wbflush(); 98 cause &= ~MIPS_INT_MASK_2; 99 } 100 /* If clock interrupts were enabled, re-enable them ASAP. */ 101 _splset(MIPS_SR_INT_IE | (status & MIPS_INT_MASK_2)); 102 103 if (ipending & MIPS_INT_MASK_5) { 104 u_int int5stat = *(volatile u_int *)NEWS5000_INTST5; 105 printf("level5 interrupt (%08x)\n", int5stat); 106 107 apbus_wbflush(); 108 cause &= ~MIPS_INT_MASK_5; 109 } 110 111 if (ipending & MIPS_INT_MASK_4) { 112 u_int int4stat = *(volatile u_int *)NEWS5000_INTST4; 113 printf("level4 interrupt (%08x)\n", int4stat); 114 if (int4stat & NEWS5000_INT4_APBUS) { 115 u_int stat = *(volatile u_int *)NEWS5000_APBUS_INTST; 116 printf("APbus error 0x%04x\n", stat & 0xffff); 117 if (stat & NEWS5000_APBUS_INT_DMAADDR) { 118 printf("DMA Address Error: " 119 "slot=%x, addr=0x%08x\n", 120 *(volatile u_int *)NEWS5000_APBUS_DER_S, 121 *(volatile u_int *)NEWS5000_APBUS_DER_A); 122 } 123 if (stat & NEWS5000_APBUS_INT_RDTIMEO) 124 printf("IO Read Timeout: addr=0x%08x\n", 125 *(volatile u_int *)NEWS5000_APBUS_BER_A); 126 if (stat & NEWS5000_APBUS_INT_WRTIMEO) 127 printf("IO Write Timeout: addr=0x%08x\n", 128 *(volatile u_int *)NEWS5000_APBUS_BER_A); 129 *(volatile u_int *)0xb4c00014 = stat; 130 } 131 132 apbus_wbflush(); 133 cause &= ~MIPS_INT_MASK_4; 134 } 135 136 if (ipending & MIPS_INT_MASK_3) { 137 u_int int3stat = *(volatile u_int *)NEWS5000_INTST3; 138 printf("level3 interrupt (%08x)\n", int3stat); 139 140 apbus_wbflush(); 141 cause &= ~MIPS_INT_MASK_3; 142 } 143 144 if (ipending & MIPS_INT_MASK_1) { 145 news5000_level1_intr(); 146 apbus_wbflush(); 147 cause &= ~MIPS_INT_MASK_1; 148 } 149 150 if (ipending & MIPS_INT_MASK_0) { 151 news5000_level0_intr(); 152 apbus_wbflush(); 153 cause &= ~MIPS_INT_MASK_0; 154 } 155 156 _splset((status & ~cause & MIPS_HARD_INT_MASK) | MIPS_SR_INT_IE); 157 } 158 159 160 static void 161 news5000_level1_intr(void) 162 { 163 u_int int1stat; 164 165 int1stat = *(volatile u_int *)NEWS5000_INTST1; 166 167 if (int1stat) { 168 if (apbus_intr_dispatch(1, int1stat) == 0) 169 printf("level1_intr: no handler (mask 0x%04x)\n", 170 int1stat); 171 } else 172 printf("level1 stray interrupt?\n"); 173 } 174 175 static void 176 news5000_level0_intr(void) 177 { 178 u_int int0stat; 179 180 int0stat = *(volatile u_int *)NEWS5000_INTST0; 181 182 if (int0stat) { 183 if (apbus_intr_dispatch(0, int0stat) == 0) 184 printf("level0_intr: no handler (mask 0x%04x)\n", 185 int0stat); 186 } else 187 printf("level0 stray interrupt?\n"); 188 } 189 190 static void 191 news5000_enable_intr(void) 192 { 193 194 /* INT0 and INT1 has been enabled at attach */ 195 /* INT2 -- It's not a time to enable timer yet. */ 196 /* INT3 -- not used for NWS-5000 */ 197 198 *(volatile u_int *)NEWS5000_INTEN4 = NEWS5000_INT4_APBUS; 199 *(volatile u_int *)NEWS5000_APBUS_INTMSK = 0xffff; 200 201 /* INT5 -- currently ignored */ 202 *(volatile u_int *)NEWS5000_INTEN5 = 0; 203 } 204 205 static void 206 news5000_disable_intr(void) 207 { 208 209 *(volatile u_int *)NEWS5000_INTEN0 = 0; 210 *(volatile u_int *)NEWS5000_INTEN1 = 0; 211 *(volatile u_int *)NEWS5000_INTEN2 = 0; 212 *(volatile u_int *)NEWS5000_INTEN3 = 0; 213 *(volatile u_int *)NEWS5000_INTEN4 = 0; 214 *(volatile u_int *)NEWS5000_INTEN5 = 0; 215 } 216 217 static void 218 news5000_enable_timer(void) 219 { 220 221 /* enable timer interrpt */ 222 *(volatile u_int32_t *)NEWS5000_INTEN2 = NEWS5000_INT2_TIMER0; 223 } 224 225 static void 226 news5000_readmicrotime(tvp) 227 struct timeval *tvp; 228 { 229 u_int freerun; 230 231 *tvp = time; 232 freerun = *(volatile u_int *)NEWS5000_FREERUN; 233 freerun -= freerun_off; 234 if (freerun > 1000000) 235 freerun = 1000000; 236 tvp->tv_usec += freerun; 237 if (tvp->tv_usec >= 1000000) { 238 tvp->tv_usec -= 1000000; 239 tvp->tv_sec++; 240 } 241 } 242 243 static void 244 news5000_readidrom(rom) 245 u_char *rom; 246 { 247 u_int32_t *p = (void *)NEWS5000_IDROM; 248 int i; 249 250 for (i = 0; i < sizeof (struct idrom); i++, p += 2) 251 *rom++ = ((*p & 0x0f) << 4) + (*(p + 1) & 0x0f); 252 } 253 254 extern struct idrom idrom; 255 256 void 257 news5000_init(void) 258 { 259 260 enable_intr = news5000_enable_intr; 261 disable_intr = news5000_disable_intr; 262 enable_timer = news5000_enable_timer; 263 264 news5000_readidrom((u_char *)&idrom); 265 readmicrotime = news5000_readmicrotime; 266 hostid = idrom.id_serial; 267 268 /* XXX reset uPD72067 FDC to avoid spurious interrupts */ 269 #define NEWS5000_FDC_FDOUT 0xbed20000 270 #define FDO_FRST 0x04 271 *(volatile u_int8_t *)NEWS5000_FDC_FDOUT = FDO_FRST; 272 } 273
Indexes created Fri Oct 03 02:09:57 GMT 2025