FreeBSD-5.3/sys/sparc64/sparc64/dump_machdep.c
/*
* Copyright (c) 2002 Marcel Moolenaar
* Copyright (c) 2002 Thomas Moestl
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD: src/sys/sparc64/sparc64/dump_machdep.c,v 1.7 2003/12/26 14:30:19 obrien Exp $
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/cons.h>
#include <sys/kernel.h>
#include <sys/kerneldump.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/pmap.h>
#include <machine/metadata.h>
#include <machine/kerneldump.h>
#include <machine/ofw_mem.h>
#include <machine/tsb.h>
#include <machine/tlb.h>
CTASSERT(sizeof(struct kerneldumpheader) == DEV_BSIZE);
static struct kerneldumpheader kdh;
static off_t dumplo, dumppos;
/* Handle buffered writes. */
static char buffer[DEV_BSIZE];
static vm_size_t fragsz;
#define MAXDUMPSZ (MAXDUMPPGS << PAGE_SHIFT)
/* XXX should be MI */
static void
mkdumpheader(struct kerneldumpheader *kdh, uint32_t archver, uint64_t dumplen,
uint32_t blksz)
{
bzero(kdh, sizeof(*kdh));
strncpy(kdh->magic, KERNELDUMPMAGIC, sizeof(kdh->magic));
strncpy(kdh->architecture, MACHINE_ARCH, sizeof(kdh->architecture));
kdh->version = htod32(KERNELDUMPVERSION);
kdh->architectureversion = htod32(archver);
kdh->dumplength = htod64(dumplen);
kdh->dumptime = htod64(time_second);
kdh->blocksize = htod32(blksz);
strncpy(kdh->hostname, hostname, sizeof(kdh->hostname));
strncpy(kdh->versionstring, version, sizeof(kdh->versionstring));
if (panicstr != NULL)
strncpy(kdh->panicstring, panicstr, sizeof(kdh->panicstring));
kdh->parity = kerneldump_parity(kdh);
}
static int
buf_write(struct dumperinfo *di, char *ptr, size_t sz)
{
size_t len;
int error;
while (sz) {
len = DEV_BSIZE - fragsz;
if (len > sz)
len = sz;
bcopy(ptr, buffer + fragsz, len);
fragsz += len;
ptr += len;
sz -= len;
if (fragsz == DEV_BSIZE) {
error = di->dumper(di->priv, buffer, 0, dumplo,
DEV_BSIZE);
if (error)
return error;
dumplo += DEV_BSIZE;
fragsz = 0;
}
}
return (0);
}
static int
buf_flush(struct dumperinfo *di)
{
int error;
if (fragsz == 0)
return (0);
error = di->dumper(di->priv, buffer, 0, dumplo, DEV_BSIZE);
dumplo += DEV_BSIZE;
return (error);
}
static int
reg_write(struct dumperinfo *di, vm_paddr_t pa, vm_size_t size)
{
struct sparc64_dump_reg r;
r.dr_pa = pa;
r.dr_size = size;
r.dr_offs = dumppos;
dumppos += size;
return (buf_write(di, (char *)&r, sizeof(r)));
}
static int
blk_dump(struct dumperinfo *di, vm_paddr_t pa, vm_size_t size)
{
vm_size_t pos, rsz;
vm_offset_t va;
int c, counter, error, twiddle;
printf(" chunk at %#lx: %ld bytes ", (u_long)pa, (long)size);
va = 0L;
error = counter = twiddle = 0;
for (pos = 0; pos < size; pos += MAXDUMPSZ, counter++) {
if (counter % 128 == 0)
printf("%c\b", "|/-\\"[twiddle++ & 3]);
rsz = size - pos;
rsz = (rsz > MAXDUMPSZ) ? MAXDUMPSZ : rsz;
va = TLB_PHYS_TO_DIRECT(pa + pos);
error = di->dumper(di->priv, (void *)va, 0, dumplo, rsz);
if (error)
break;
dumplo += rsz;
/* Check for user abort. */
c = cncheckc();
if (c == 0x03)
return (ECANCELED);
if (c != -1)
printf("(CTRL-C to abort) ");
}
printf("... %s\n", (error) ? "fail" : "ok");
return (error);
}
void
dumpsys(struct dumperinfo *di)
{
struct sparc64_dump_hdr hdr;
vm_size_t size, totsize, hdrsize;
int error, i, nreg;
/* Calculate dump size. */
size = 0;
nreg = sparc64_nmemreg;
for (i = 0; i < sparc64_nmemreg; i++)
size += sparc64_memreg[i].mr_size;
/* Account for the header size. */
hdrsize = roundup2(sizeof(hdr) + sizeof(struct sparc64_dump_reg) * nreg,
DEV_BSIZE);
size += hdrsize;
totsize = size + 2 * sizeof(kdh);
if (totsize > di->mediasize) {
printf("Insufficient space on device (need %ld, have %ld), "
"refusing to dump.\n", (long)totsize,
(long)di->mediasize);
error = ENOSPC;
goto fail;
}
/* Determine dump offset on device. */
dumplo = di->mediaoffset + di->mediasize - totsize;
mkdumpheader(&kdh, KERNELDUMP_SPARC64_VERSION, size, di->blocksize);
printf("Dumping %lu MB (%d chunks)\n", (u_long)(size >> 20), nreg);
/* Dump leader */
error = di->dumper(di->priv, &kdh, 0, dumplo, sizeof(kdh));
if (error)
goto fail;
dumplo += sizeof(kdh);
/* Dump the private header. */
hdr.dh_hdr_size = hdrsize;
hdr.dh_tsb_pa = tsb_kernel_phys;
hdr.dh_tsb_size = tsb_kernel_size;
hdr.dh_tsb_mask = tsb_kernel_mask;
hdr.dh_nregions = nreg;
if (buf_write(di, (char *)&hdr, sizeof(hdr)) != 0)
goto fail;
dumppos = hdrsize;
/* Now, write out the region descriptors. */
for (i = 0; i < sparc64_nmemreg; i++) {
error = reg_write(di, sparc64_memreg[i].mr_start,
sparc64_memreg[i].mr_size);
if (error != 0)
goto fail;
}
buf_flush(di);
/* Dump memory chunks. */
for (i = 0; i < sparc64_nmemreg; i++) {
error = blk_dump(di, sparc64_memreg[i].mr_start,
sparc64_memreg[i].mr_size);
if (error != 0)
goto fail;
}
/* Dump trailer */
error = di->dumper(di->priv, &kdh, 0, dumplo, sizeof(kdh));
if (error)
goto fail;
/* Signal completion, signoff and exit stage left. */
di->dumper(di->priv, NULL, 0, 0, 0);
printf("\nDump complete\n");
return;
fail:
/* XXX It should look more like VMS :-) */
printf("** DUMP FAILED (ERROR %d) **\n", error);
}