vr.c revision 1.3
1 /* $NetBSD: vr.c,v 1.3 1999/10/24 08:37:30 takemura Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 5 * Shin Takemura and PocketBSD Project. 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 by the PocketBSD project 18 * and its contributors. 19 * 4. Neither the name of the project nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 */ 36 #include <sys/param.h> 37 #include <sys/types.h> 38 #include <sys/systm.h> 39 #include <sys/device.h> 40 41 #include <machine/cpu.h> 42 #include <machine/intr.h> 43 #include <machine/reg.h> 44 #include <machine/psl.h> 45 #include <machine/locore.h> 46 #include <machine/sysconf.h> 47 #include <machine/bus.h> 48 #include <machine/autoconf.h> 49 50 #include <mips/mips_param.h> /* hokey spl()s */ 51 #include <mips/mips/mips_mcclock.h> /* mcclock CPUspeed estimation */ 52 53 #include <hpcmips/vr/vr.h> 54 #include <hpcmips/vr/vripreg.h> 55 #include <hpcmips/vr/rtcreg.h> 56 #include <hpcmips/hpcmips/machdep.h> /* XXXjrs replace with vectors */ 57 #include <machine/bootinfo.h> 58 59 #include "com.h" 60 #if NCOM > 0 61 #include <sys/termios.h> 62 #include <sys/ttydefaults.h> 63 #include <dev/ic/comreg.h> 64 #include <dev/ic/comvar.h> 65 #include <hpcmips/vr/siureg.h> 66 #include <hpcmips/vr/com_vripvar.h> 67 #ifndef CONSPEED 68 #define CONSPEED TTYDEF_SPEED 69 #endif 70 #endif 71 72 #include "fb.h" 73 #include "vrkiu.h" 74 #if NFB > 0 || NVRKIU > 0 75 #include <dev/rcons/raster.h> 76 #include <dev/wscons/wsdisplayvar.h> 77 #endif 78 79 #if NFB > 0 80 #include <arch/hpcmips/dev/fbvar.h> 81 #endif 82 83 #if NFB > 0 84 #include <arch/hpcmips/vr/vrkiuvar.h> 85 #endif 86 87 void vr_init __P((void)); 88 void vr_os_init __P((void)); 89 void vr_bus_reset __P((void)); 90 int vr_intr __P((u_int32_t mask, u_int32_t pc, u_int32_t statusReg, u_int32_t causeReg)); 91 void vr_cons_init __P((void)); 92 void vr_device_register __P((struct device *, void *)); 93 94 char *vrbcu_vrip_getcpuname __P((void)); 95 int vrbcu_vrip_getcpumajor __P((void)); 96 int vrbcu_vrip_getcpuminor __P((void)); 97 98 extern unsigned nullclkread __P((void)); 99 extern unsigned (*clkread) __P((void)); 100 101 /* 102 * CPU interrupt dispatch table (HwInt[0:3]) 103 */ 104 int null_handler __P((void*, u_int32_t, u_int32_t)); 105 static int (*intr_handler[4]) __P((void*, u_int32_t, u_int32_t)) = 106 { 107 null_handler, 108 null_handler, 109 null_handler, 110 null_handler 111 }; 112 static void *intr_arg[4]; 113 114 void 115 vr_init() 116 { 117 /* 118 * Platform Information. 119 */ 120 121 /* 122 * Platform Specific Function Hooks 123 */ 124 platform.os_init = vr_os_init; 125 platform.bus_reset = vr_bus_reset; 126 platform.cons_init = vr_cons_init; 127 platform.device_register = vr_device_register; 128 129 sprintf(cpu_model, "NEC %s rev%d.%d", 130 vrbcu_vrip_getcpuname(), 131 vrbcu_vrip_getcpumajor(), 132 vrbcu_vrip_getcpuminor()); 133 } 134 135 void 136 vr_os_init() 137 { 138 /* 139 * Set up interrupt handling and I/O addresses. 140 */ 141 mips_hardware_intr = vr_intr; 142 143 splvec.splbio = MIPS_SPL0; 144 splvec.splnet = MIPS_SPL0; 145 splvec.spltty = MIPS_SPL0; 146 splvec.splimp = MIPS_SPL0; 147 splvec.splclock = MIPS_SPL_0_1; 148 splvec.splstatclock = MIPS_SPL_0_1; 149 150 /* no high resolution timer circuit; possibly never called */ 151 clkread = nullclkread; 152 153 #ifdef NOT_YET 154 mcclock_addr = (volatile struct chiptime *) 155 MIPS_PHYS_TO_KSEG1(Vr_SYS_CLOCK); 156 mc_cpuspeed(mcclock_addr, MIPS_INT_MASK_1); 157 #else 158 printf("%s(%d): cpuspeed estimation is notimplemented\n", 159 __FILE__, __LINE__); 160 #endif 161 #ifdef HPCMIPS_L1CACHE_DISABLE 162 cpuspeed = 1; /* XXX, CPU is very very slow because L1 cache is */ 163 /* disabled. */ 164 #endif /* HPCMIPS_L1CAHCE_DISABLE */ 165 } 166 167 168 /* 169 * Initalize the memory system and I/O buses. 170 */ 171 void 172 vr_bus_reset() 173 { 174 printf("%s(%d): vr_bus_reset() not implemented.\n", 175 __FILE__, __LINE__); 176 } 177 178 void 179 vr_cons_init() 180 { 181 #if NCOM > 0 || NFB > 0 || NVRKIU > 0 182 extern bus_space_tag_t system_bus_iot; 183 extern bus_space_tag_t mb_bus_space_init __P((void)); 184 #endif 185 186 #if NCOM > 0 187 if (bootinfo->bi_cnuse & BI_CNUSE_SERIAL) { 188 /* Serial console */ 189 mb_bus_space_init(); /* At this time, not initialized yet */ 190 if(com_vrip_cnattach(system_bus_iot, 0x0c000000, CONSPEED, 191 VRCOM_FREQ, 192 (TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8)) { 193 printf("%s(%d): can't init serial console", __FILE__, __LINE__); 194 } else { 195 return; 196 } 197 } 198 #endif 199 200 #if NFB > 0 201 mb_bus_space_init(); /* At this time, not initialized yet */ 202 if(fb_cnattach(system_bus_iot, 0x0c000000, 0, 0)) { 203 printf("%s(%d): can't init fb console", __FILE__, __LINE__); 204 } else { 205 goto find_keyboard; 206 } 207 #endif 208 209 find_keyboard: 210 #if NVRKIU > 0 211 if (vrkiu_cnattach(system_bus_iot, VRIP_KIU_ADDR)) { 212 printf("%s(%d): can't init vrkiu as console", 213 __FILE__, __LINE__); 214 } else { 215 return; 216 } 217 #endif 218 } 219 220 void 221 vr_device_register(dev, aux) 222 struct device *dev; 223 void *aux; 224 { 225 printf("%s(%d): vr_device_register() not implemented.\n", 226 __FILE__, __LINE__); 227 panic("abort"); 228 } 229 230 void * 231 vr_intr_establish(line, ih_fun, ih_arg) 232 int line; 233 int (*ih_fun) __P((void*, u_int32_t, u_int32_t)); 234 void *ih_arg; 235 { 236 if (intr_handler[line] != null_handler) { 237 panic("vr_intr_establish: can't establish duplicated intr handler."); 238 } 239 intr_handler[line] = ih_fun; 240 intr_arg[line] = ih_arg; 241 242 return (void*)line; 243 } 244 245 246 void 247 vr_intr_disestablish(ih) 248 void *ih; 249 { 250 int line = (int)ih; 251 intr_handler[line] = null_handler; 252 intr_arg[line] = NULL; 253 } 254 255 int 256 null_handler(arg, pc, statusReg) 257 void *arg; 258 u_int32_t pc; 259 u_int32_t statusReg; 260 { 261 printf("null_handler\n"); 262 return 0; 263 } 264 265 /* 266 * Handle interrupts. 267 */ 268 int 269 vr_intr(mask, pc, status, cause) 270 u_int32_t mask; 271 u_int32_t pc; 272 u_int32_t status; 273 u_int32_t cause; 274 { 275 int hwintr; 276 277 hwintr = (ffs(mask >> 10) -1) & 0x3; 278 (*intr_handler[hwintr])(intr_arg[hwintr], pc, status); 279 return (MIPS_SR_INT_IE | (status & ~cause & MIPS_HARD_INT_MASK)); 280 } 281
Indexes created Sat Sep 27 14:09:57 GMT 2025