news5000.c revision 1.16
1 /* $NetBSD: news5000.c,v 1.16 2006/09/13 14:50:42 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 1.16 2006/09/13 14:50:42 tsutsui Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/kernel.h> 35 #include <sys/timetc.h> 36 37 #include <machine/adrsmap.h> 38 #include <machine/cpu.h> 39 #include <machine/intr.h> 40 41 #include <newsmips/apbus/apbusvar.h> 42 #include <newsmips/newsmips/machid.h> 43 44 static void news5000_level1_intr(void); 45 static void news5000_level0_intr(void); 46 47 static void news5000_enable_intr(void); 48 static void news5000_disable_intr(void); 49 static void news5000_enable_timer(void); 50 static void news5000_readidrom(uint8_t *); 51 static void news5000_tc_init(void); 52 static uint32_t news5000_getfreerun(struct timecounter *); 53 54 /* 55 * Handle news5000 interrupts. 56 */ 57 void 58 news5000_intr(uint32_t status, uint32_t cause, uint32_t pc, uint32_t ipending) 59 { 60 if (ipending & MIPS_INT_MASK_2) { 61 #ifdef DEBUG 62 static int l2cnt = 0; 63 #endif 64 uint32_t int2stat; 65 struct clockframe cf; 66 67 int2stat = *(volatile uint32_t *)NEWS5000_INTST2; 68 69 #ifdef DEBUG 70 l2cnt++; 71 if (l2cnt == 50) { 72 *(volatile uint32_t *)NEWS5000_LED_SEC = 1; 73 } 74 if (l2cnt == 100) { 75 *(volatile uint32_t *)NEWS5000_LED_SEC = 0; 76 l2cnt = 0; 77 } 78 #endif 79 80 if (int2stat & NEWS5000_INT2_TIMER0) { 81 *(volatile uint32_t *)NEWS5000_TIMER0 = 1; 82 83 cf.pc = pc; 84 cf.sr = status; 85 86 hardclock(&cf); 87 intrcnt[HARDCLOCK_INTR]++; 88 } 89 90 apbus_wbflush(); 91 cause &= ~MIPS_INT_MASK_2; 92 } 93 /* If clock interrupts were enabled, re-enable them ASAP. */ 94 _splset(MIPS_SR_INT_IE | (status & MIPS_INT_MASK_2)); 95 96 if (ipending & MIPS_INT_MASK_5) { 97 uint32_t int5stat; 98 99 int5stat = *(volatile u_int *)NEWS5000_INTST5; 100 printf("level5 interrupt (%08x)\n", int5stat); 101 102 apbus_wbflush(); 103 cause &= ~MIPS_INT_MASK_5; 104 } 105 106 if (ipending & MIPS_INT_MASK_4) { 107 uint32_t int4stat; 108 109 int4stat = *(volatile uint32_t *)NEWS5000_INTST4; 110 printf("level4 interrupt (%08x)\n", int4stat); 111 if (int4stat & NEWS5000_INT4_APBUS) { 112 uint32_t stat; 113 114 stat = *(volatile uint32_t *)NEWS5000_APBUS_INTST; 115 printf("APbus error 0x%04x\n", stat & 0xffff); 116 if (stat & NEWS5000_APBUS_INT_DMAADDR) { 117 printf("DMA Address Error: " 118 "slot=%x, addr=0x%08x\n", 119 *(volatile uint32_t *)NEWS5000_APBUS_DER_S, 120 *(volatile uint32_t *)NEWS5000_APBUS_DER_A); 121 } 122 if (stat & NEWS5000_APBUS_INT_RDTIMEO) 123 printf("IO Read Timeout: addr=0x%08x\n", 124 *(volatile uint32_t *)NEWS5000_APBUS_BER_A); 125 if (stat & NEWS5000_APBUS_INT_WRTIMEO) 126 printf("IO Write Timeout: addr=0x%08x\n", 127 *(volatile uint32_t *)NEWS5000_APBUS_BER_A); 128 *(volatile uint32_t *)0xb4c00014 = stat; 129 } 130 131 apbus_wbflush(); 132 cause &= ~MIPS_INT_MASK_4; 133 } 134 135 if (ipending & MIPS_INT_MASK_3) { 136 uint32_t int3stat; 137 138 int3stat = *(volatile uint32_t *)NEWS5000_INTST3; 139 printf("level3 interrupt (%08x)\n", int3stat); 140 141 apbus_wbflush(); 142 cause &= ~MIPS_INT_MASK_3; 143 } 144 145 if (ipending & MIPS_INT_MASK_1) { 146 news5000_level1_intr(); 147 apbus_wbflush(); 148 cause &= ~MIPS_INT_MASK_1; 149 } 150 151 if (ipending & MIPS_INT_MASK_0) { 152 news5000_level0_intr(); 153 apbus_wbflush(); 154 cause &= ~MIPS_INT_MASK_0; 155 } 156 157 _splset((status & ~cause & MIPS_HARD_INT_MASK) | MIPS_SR_INT_IE); 158 } 159 160 161 static void 162 news5000_level1_intr(void) 163 { 164 uint32_t int1stat; 165 166 int1stat = *(volatile uint32_t *)NEWS5000_INTST1; 167 168 if (int1stat) { 169 if (apbus_intr_dispatch(1, int1stat) == 0) 170 printf("level1_intr: no handler (mask 0x%04x)\n", 171 int1stat); 172 } else 173 printf("level1 stray interrupt?\n"); 174 } 175 176 static void 177 news5000_level0_intr(void) 178 { 179 uint32_t int0stat; 180 181 int0stat = *(volatile uint32_t *)NEWS5000_INTST0; 182 183 if (int0stat) { 184 if (apbus_intr_dispatch(0, int0stat) == 0) 185 printf("level0_intr: no handler (mask 0x%04x)\n", 186 int0stat); 187 } else 188 printf("level0 stray interrupt?\n"); 189 } 190 191 static void 192 news5000_enable_intr(void) 193 { 194 195 /* INT0 and INT1 has been enabled at attach */ 196 /* INT2 -- It's not a time to enable timer yet. */ 197 /* INT3 -- not used for NWS-5000 */ 198 199 *(volatile uint32_t *)NEWS5000_INTEN4 = NEWS5000_INT4_APBUS; 200 *(volatile uint32_t *)NEWS5000_APBUS_INTMSK = 0xffff; 201 202 /* INT5 -- currently ignored */ 203 *(volatile uint32_t *)NEWS5000_INTEN5 = 0; 204 } 205 206 static void 207 news5000_disable_intr(void) 208 { 209 210 *(volatile uint32_t *)NEWS5000_INTEN0 = 0; 211 *(volatile uint32_t *)NEWS5000_INTEN1 = 0; 212 *(volatile uint32_t *)NEWS5000_INTEN2 = 0; 213 *(volatile uint32_t *)NEWS5000_INTEN3 = 0; 214 *(volatile uint32_t *)NEWS5000_INTEN4 = 0; 215 *(volatile uint32_t *)NEWS5000_INTEN5 = 0; 216 } 217 218 static void 219 news5000_enable_timer(void) 220 { 221 222 news5000_tc_init(); 223 224 /* enable timer interrpt */ 225 *(volatile uint32_t *)NEWS5000_INTEN2 = NEWS5000_INT2_TIMER0; 226 } 227 228 static uint32_t 229 news5000_getfreerun(struct timecounter *tc) 230 { 231 return *(volatile uint32_t *)NEWS5000_FREERUN; 232 } 233 234 static void 235 news5000_tc_init(void) 236 { 237 static struct timecounter tc = { 238 .tc_get_timecount = news5000_getfreerun, 239 .tc_frequency = 1000000, 240 .tc_counter_mask = ~0, 241 .tc_name = "news5000_freerun", 242 .tc_quality = 100, 243 }; 244 245 tc_init(&tc); 246 } 247 248 249 static void 250 news5000_readidrom(uint8_t *rom) 251 { 252 uint32_t *p = (void *)NEWS5000_IDROM; 253 int i; 254 255 for (i = 0; i < sizeof(struct idrom); i++, p += 2) 256 *rom++ = ((*p & 0x0f) << 4) + (*(p + 1) & 0x0f); 257 } 258 259 extern struct idrom idrom; 260 261 void 262 news5000_init(void) 263 { 264 265 enable_intr = news5000_enable_intr; 266 disable_intr = news5000_disable_intr; 267 enable_timer = news5000_enable_timer; 268 269 news5000_readidrom((uint8_t *)&idrom); 270 hostid = idrom.id_serial; 271 272 /* XXX reset uPD72067 FDC to avoid spurious interrupts */ 273 #define NEWS5000_FDC_FDOUT 0xbed20000 274 #define FDO_FRST 0x04 275 *(volatile uint8_t *)NEWS5000_FDC_FDOUT = FDO_FRST; 276 } 277
Indexes created Thu Oct 02 14:10:14 GMT 2025