/*
* Copyright (c) 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
*/
/*
* Copyright (c) 1999, by UCHIYAMA Yasushi
* 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. The name of the developer may NOT be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*/
/*
* Copyright (c) 1997-2001 Michael Shalayeff
* 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 OR HIS RELATIVES 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 MIND, 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.
*/
/*
* Basic interface to System Management BIOS (SMBIOS) tables.
*/
/*
* smbios_read --
*
* Read data from an SMBIOS table that resides in physical memory.
*/
static int
smbios_read(dev_t dev, struct uio *uio, int flag)
{
paddr_t pa;
uint8_t *data;
size_t len;
int error;
if (smbios_entry.addr == NULL) {
return EIO;
}
if (uio->uio_rw != UIO_READ) {
return EPERM;
}
pa = uio->uio_offset;
if (pa == smbios_entry.hdrphys) {
/* SMBIOS header */
len = uimin(0x20, uio->uio_resid);
} else {
/* Table data */
if (pa < smbios_entry.tabphys ||
pa >= smbios_entry.tabphys + smbios_entry.len) {
return EFAULT;
}
len = uimin(smbios_entry.len - (pa - smbios_entry.tabphys),
uio->uio_resid);
}
data = smbios_map_memory(pa, len);
if (data == NULL) {
return ENOMEM;
}
error = uiomove(data, len, uio);
smbios_unmap_memory(data, len);
return error;
}
int
smbios2_check_header(const uint8_t *p)
{
const struct smbhdr *sh = (const struct smbhdr *)p;
uint8_t chksum;
int i;
if (sh->sig != SMBIOS_MAKESIG('_', 'S', 'M', '_'))
return 0;
i = sh->len;
for (chksum = 0; i--; )
chksum += p[i];
if (chksum != 0)
return 0;
p += 0x10;
if (p[0] != '_' || p[1] != 'D' || p[2] != 'M' ||
p[3] != 'I' || p[4] != '_')
return 0;
for (chksum = 0, i = 0xf; i--; )
chksum += p[i];
if (chksum != 0)
return 0;
return 1;
}
int
smbios3_check_header(const uint8_t *p)
{
const struct smb3hdr *sh = (const struct smb3hdr *)p;
uint8_t chksum;
int i;
if (p[0] != '_' || p[1] != 'S' || p[2] != 'M' ||
p[3] != '3' || p[4] != '_')
return 0;
i = sh->len;
for (chksum = 0; i--; )
chksum += p[i];
if (chksum != 0)
return 0;
if (sh->eprev != SMBIOS3_EPREV_3_0)
return 0;
return 1;
}
/*
* smbios_find_table() takes a caller supplied smbios struct type and
* a pointer to a handle (struct smbtable) returning one if the structure
* is successfully located and zero otherwise. Callers should take care
* to initilize the cookie field of the smbtable structure to zero before
* the first invocation of this function.
* Multiple tables of the same type can be located by repeadtly calling
* smbios_find_table with the same arguments.
*/
int
smbios_find_table(uint8_t type, struct smbtable *st)
{
uint8_t *va, *end;
struct smbtblhdr *hdr;
int ret = 0, tcount = 1;
if (smbios_entry.addr == NULL) {
return 0;
}
va = smbios_entry.addr;
end = va + smbios_entry.len;
/*
* The cookie field of the smtable structure is used to locate
* multiple instances of a table of an arbitrary type. Following the
* successful location of a table, the type is encoded as bits 0:7 of
* the cookie value, the offset in terms of the number of structures
* preceding that referenced by the handle is encoded in bits 15:31.
*/
if ((st->cookie & 0xfff) == type && st->cookie >> 16) {
if ((uint8_t *)st->hdr >= va && (uint8_t *)st->hdr < end) {
hdr = st->hdr;
if (hdr->type == type) {
va = (uint8_t *)hdr + hdr->size;
for (; va + 1 < end; va++)
if (*va == 0 && *(va + 1) == 0)
break;
va+= 2;
tcount = st->cookie >> 16;
}
}
}
for (; va + sizeof(struct smbtblhdr) < end && tcount <=
smbios_entry.count; tcount++) {
hdr = (struct smbtblhdr *)va;
if (hdr->type == type) {
ret = 1;
st->hdr = hdr;
st->tblhdr = va + sizeof(struct smbtblhdr);
st->cookie = (tcount + 1) << 16 | type;
break;
}
if (hdr->type == SMBIOS_TYPE_EOT)
break;
va+= hdr->size;
for (; va + 1 < end; va++)
if (*va == 0 && *(va + 1) == 0)
break;
va+=2;
}
va = (uint8_t *)st->hdr + st->hdr->size;
end = smbios_entry.addr + smbios_entry.len;
for (i = 1; va < end && i < indx && *va; i++)
while (*va++)
;
if (i == indx) {
if (va + len < end) {
ret = dest;
memcpy(ret, va, len);
ret[len - 1] = '\0';
}
}
