stubs.c revision 1.6
1 /* $NetBSD: stubs.c,v 1.6 2001/11/26 23:19:04 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1994-1998 Mark Brinicombe. 5 * Copyright (c) 1994 Brini. 6 * All rights reserved. 7 * 8 * This code is derived from software written for Brini by Mark Brinicombe 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by Mark Brinicombe 21 * for the NetBSD Project. 22 * 4. The name of the company nor the name of the author may be used to 23 * endorse or promote products derived from this software without specific 24 * prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 28 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 29 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 30 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 31 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 32 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * Routines that are temporary or do not have a home yet. 39 * 40 * Created : 17/09/94 41 */ 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/errno.h> 46 #include <sys/proc.h> 47 #include <sys/conf.h> 48 #include <sys/msgbuf.h> 49 #include <uvm/uvm_extern.h> 50 #include <machine/cpu.h> 51 #include <machine/intr.h> 52 #include <machine/bootconfig.h> 53 #include <machine/pcb.h> 54 55 extern dev_t dumpdev; 56 extern BootConfig bootconfig; 57 58 /* 59 * These variables are needed by /sbin/savecore 60 */ 61 u_long dumpmag = 0x8fca0101; /* magic number */ 62 int dumpsize = 0; /* pages */ 63 long dumplo = 0; /* blocks */ 64 65 struct pcb dumppcb; 66 67 /* 68 * This is called by main to set dumplo and dumpsize. 69 * Dumps always skip the first CLBYTES of disk space 70 * in case there might be a disk label stored there. 71 * If there is extra space, put dump at the end to 72 * reduce the chance that swapping trashes it. 73 */ 74 75 void 76 cpu_dumpconf() 77 { 78 int nblks; /* size of dump area */ 79 int maj; 80 81 if (dumpdev == NODEV) 82 return; 83 maj = major(dumpdev); 84 if (maj < 0 || maj >= nblkdev) 85 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 86 if (bdevsw[maj].d_psize == NULL) 87 return; 88 nblks = (*bdevsw[maj].d_psize)(dumpdev); 89 if (nblks <= ctod(1)) 90 return; 91 92 dumpsize = physmem; 93 94 /* Always skip the first CLBYTES, in case there is a label there. */ 95 if (dumplo < ctod(1)) 96 dumplo = ctod(1); 97 98 /* Put dump at end of partition, and make it fit. */ 99 if (dumpsize > dtoc(nblks - dumplo)) 100 dumpsize = dtoc(nblks - dumplo); 101 if (dumplo < nblks - ctod(dumpsize)) 102 dumplo = nblks - ctod(dumpsize); 103 } 104 105 /* This should be moved to machdep.c */ 106 107 extern pagehook_t page_hook0; 108 109 /* 110 * Doadump comes here after turning off memory management and 111 * getting on the dump stack, either when called above, or by 112 * the auto-restart code. 113 */ 114 115 void 116 dumpsys() 117 { 118 daddr_t blkno; 119 int psize; 120 int error; 121 int addr; 122 int block; 123 int len; 124 vaddr_t dumpspace; 125 126 /* Save registers. */ 127 savectx(&dumppcb); 128 129 if (dumpdev == NODEV) 130 return; 131 if (dumpsize == 0) { 132 cpu_dumpconf(); 133 if (dumpsize == 0) 134 return; 135 } 136 if (dumplo <= 0) { 137 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 138 minor(dumpdev)); 139 return; 140 } 141 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 142 minor(dumpdev), dumplo); 143 144 blkno = dumplo; 145 dumpspace = page_hook0.va; 146 147 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 148 printf("dump "); 149 if (psize == -1) { 150 printf("area unavailable\n"); 151 return; 152 } 153 154 error = 0; 155 len = 0; 156 157 for (block = 0; block < bootconfig.dramblocks && error == 0; ++block) { 158 addr = bootconfig.dram[block].address; 159 for (;addr < (bootconfig.dram[block].address 160 + (bootconfig.dram[block].pages * NBPG)); addr += NBPG) { 161 if ((len % (1024*1024)) == 0) 162 printf("%d ", len / (1024*1024)); 163 pmap_map(dumpspace, addr, addr + NBPG, VM_PROT_READ); 164 error = (*bdevsw[major(dumpdev)].d_dump)(dumpdev, 165 blkno, (caddr_t) dumpspace, NBPG); 166 if (error) break; 167 blkno += btodb(NBPG); 168 len += NBPG; 169 } 170 } 171 172 switch (error) { 173 case ENXIO: 174 printf("device bad\n"); 175 break; 176 177 case EFAULT: 178 printf("device not ready\n"); 179 break; 180 181 case EINVAL: 182 printf("area improper\n"); 183 break; 184 185 case EIO: 186 printf("i/o error\n"); 187 break; 188 189 case EINTR: 190 printf("aborted from console\n"); 191 break; 192 193 default: 194 printf("succeeded\n"); 195 break; 196 } 197 printf("\n\n"); 198 delay(1000000); 199 } 200 201 /* End of stubs.c */ 202
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