1 /*
2 * Copyright (c) 2002 Marcel Moolenaar
3 * Copyright (c) 2002 Thomas Moestl
4 * 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 *
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 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 * $FreeBSD: releng/5.2/sys/sparc64/sparc64/dump_machdep.c 119291 2003-08-22 07:39:05Z imp $
28 */
29
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/conf.h>
33 #include <sys/cons.h>
34 #include <sys/kernel.h>
35 #include <sys/kerneldump.h>
36
37 #include <vm/vm.h>
38 #include <vm/vm_param.h>
39 #include <vm/pmap.h>
40
41 #include <machine/metadata.h>
42 #include <machine/kerneldump.h>
43 #include <machine/ofw_mem.h>
44 #include <machine/tsb.h>
45 #include <machine/tlb.h>
46
47 CTASSERT(sizeof(struct kerneldumpheader) == DEV_BSIZE);
48
49 static struct kerneldumpheader kdh;
50 static off_t dumplo, dumppos;
51
52 /* Handle buffered writes. */
53 static char buffer[DEV_BSIZE];
54 static vm_size_t fragsz;
55
56 #define MAXDUMPSZ (MAXDUMPPGS << PAGE_SHIFT)
57
58 /* XXX should be MI */
59 static void
60 mkdumpheader(struct kerneldumpheader *kdh, uint32_t archver, uint64_t dumplen,
61 uint32_t blksz)
62 {
63
64 bzero(kdh, sizeof(*kdh));
65 strncpy(kdh->magic, KERNELDUMPMAGIC, sizeof(kdh->magic));
66 strncpy(kdh->architecture, MACHINE_ARCH, sizeof(kdh->architecture));
67 kdh->version = htod32(KERNELDUMPVERSION);
68 kdh->architectureversion = htod32(archver);
69 kdh->dumplength = htod64(dumplen);
70 kdh->dumptime = htod64(time_second);
71 kdh->blocksize = htod32(blksz);
72 strncpy(kdh->hostname, hostname, sizeof(kdh->hostname));
73 strncpy(kdh->versionstring, version, sizeof(kdh->versionstring));
74 if (panicstr != NULL)
75 strncpy(kdh->panicstring, panicstr, sizeof(kdh->panicstring));
76 kdh->parity = kerneldump_parity(kdh);
77 }
78
79 static int
80 buf_write(struct dumperinfo *di, char *ptr, size_t sz)
81 {
82 size_t len;
83 int error;
84
85 while (sz) {
86 len = DEV_BSIZE - fragsz;
87 if (len > sz)
88 len = sz;
89 bcopy(ptr, buffer + fragsz, len);
90 fragsz += len;
91 ptr += len;
92 sz -= len;
93 if (fragsz == DEV_BSIZE) {
94 error = di->dumper(di->priv, buffer, 0, dumplo,
95 DEV_BSIZE);
96 if (error)
97 return error;
98 dumplo += DEV_BSIZE;
99 fragsz = 0;
100 }
101 }
102
103 return (0);
104 }
105
106 static int
107 buf_flush(struct dumperinfo *di)
108 {
109 int error;
110
111 if (fragsz == 0)
112 return (0);
113
114 error = di->dumper(di->priv, buffer, 0, dumplo, DEV_BSIZE);
115 dumplo += DEV_BSIZE;
116 return (error);
117 }
118
119 static int
120 reg_write(struct dumperinfo *di, vm_paddr_t pa, vm_size_t size)
121 {
122 struct sparc64_dump_reg r;
123
124 r.dr_pa = pa;
125 r.dr_size = size;
126 r.dr_offs = dumppos;
127 dumppos += size;
128 return (buf_write(di, (char *)&r, sizeof(r)));
129 }
130
131 static int
132 blk_dump(struct dumperinfo *di, vm_paddr_t pa, vm_size_t size)
133 {
134 vm_size_t pos, rsz;
135 vm_offset_t va;
136 int c, counter, error, twiddle;
137
138 printf(" chunk at %#lx: %ld bytes ", (u_long)pa, (long)size);
139
140 va = NULL;
141 error = counter = twiddle = 0;
142 for (pos = 0; pos < size; pos += MAXDUMPSZ, counter++) {
143 if (counter % 128 == 0)
144 printf("%c\b", "|/-\\"[twiddle++ & 3]);
145 rsz = size - pos;
146 rsz = (rsz > MAXDUMPSZ) ? MAXDUMPSZ : rsz;
147 va = TLB_PHYS_TO_DIRECT(pa + pos);
148 error = di->dumper(di->priv, (void *)va, 0, dumplo, rsz);
149 if (error)
150 break;
151 dumplo += rsz;
152
153 /* Check for user abort. */
154 c = cncheckc();
155 if (c == 0x03)
156 return (ECANCELED);
157 if (c != -1)
158 printf("(CTRL-C to abort) ");
159 }
160 printf("... %s\n", (error) ? "fail" : "ok");
161 return (error);
162 }
163
164 void
165 dumpsys(struct dumperinfo *di)
166 {
167 struct sparc64_dump_hdr hdr;
168 vm_size_t size, totsize, hdrsize;
169 int error, i, nreg;
170
171 /* Calculate dump size. */
172 size = 0;
173 nreg = sparc64_nmemreg;
174 for (i = 0; i < sparc64_nmemreg; i++)
175 size += sparc64_memreg[i].mr_size;
176 /* Account for the header size. */
177 hdrsize = roundup2(sizeof(hdr) + sizeof(struct sparc64_dump_reg) * nreg,
178 DEV_BSIZE);
179 size += hdrsize;
180
181 totsize = size + 2 * sizeof(kdh);
182 if (totsize > di->mediasize) {
183 printf("Insufficient space on device (need %ld, have %ld), "
184 "refusing to dump.\n", (long)totsize,
185 (long)di->mediasize);
186 error = ENOSPC;
187 goto fail;
188 }
189
190 /* Determine dump offset on device. */
191 dumplo = di->mediaoffset + di->mediasize - totsize;
192
193 mkdumpheader(&kdh, KERNELDUMP_SPARC64_VERSION, size, di->blocksize);
194
195 printf("Dumping %lu MB (%d chunks)\n", (u_long)(size >> 20), nreg);
196
197 /* Dump leader */
198 error = di->dumper(di->priv, &kdh, 0, dumplo, sizeof(kdh));
199 if (error)
200 goto fail;
201 dumplo += sizeof(kdh);
202
203 /* Dump the private header. */
204 hdr.dh_hdr_size = hdrsize;
205 hdr.dh_tsb_pa = tsb_kernel_phys;
206 hdr.dh_tsb_size = tsb_kernel_size;
207 hdr.dh_tsb_mask = tsb_kernel_mask;
208 hdr.dh_nregions = nreg;
209
210 if (buf_write(di, (char *)&hdr, sizeof(hdr)) != 0)
211 goto fail;
212
213 dumppos = hdrsize;
214 /* Now, write out the region descriptors. */
215 for (i = 0; i < sparc64_nmemreg; i++) {
216 error = reg_write(di, sparc64_memreg[i].mr_start,
217 sparc64_memreg[i].mr_size);
218 if (error != 0)
219 goto fail;
220 }
221 buf_flush(di);
222
223 /* Dump memory chunks. */
224 for (i = 0; i < sparc64_nmemreg; i++) {
225 error = blk_dump(di, sparc64_memreg[i].mr_start,
226 sparc64_memreg[i].mr_size);
227 if (error != 0)
228 goto fail;
229 }
230
231 /* Dump trailer */
232 error = di->dumper(di->priv, &kdh, 0, dumplo, sizeof(kdh));
233 if (error)
234 goto fail;
235
236 /* Signal completion, signoff and exit stage left. */
237 di->dumper(di->priv, NULL, 0, 0, 0);
238 printf("\nDump complete\n");
239 return;
240
241 fail:
242 /* XXX It should look more like VMS :-) */
243 printf("** DUMP FAILED (ERROR %d) **\n", error);
244 }
Cache object: 1c6f66734cb60edb056541d103153b5f
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