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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Platform-Specific SMBIOS Subroutines
*
* The routines in this file form part of <sys/smbios_impl.h> and combine with
* the usr/src/common/smbios code to form an in-kernel SMBIOS decoding service.
* The SMBIOS entry point is locating by scanning a range of physical memory
* assigned to BIOS as described in Section 2 of the DMTF SMBIOS specification.
*/
#include <sys/smbios_impl.h>
#include <sys/sysmacros.h>
#include <sys/errno.h>
#include <sys/psm.h>
#include <sys/smp_impldefs.h>
smbios_hdl_t *ksmbios;
int ksmbios_flags;
smbios_hdl_t *
smb_open_error(smbios_hdl_t *shp, int *errp, int err)
{
if (shp != NULL)
smbios_close(shp);
if (errp != NULL)
*errp = err;
if (ksmbios == NULL)
cmn_err(CE_CONT, "?SMBIOS not loaded (%s)", smbios_errmsg(err));
return (NULL);
}
smbios_hdl_t *
smbios_open(const char *file, int version, int flags, int *errp)
{
smbios_hdl_t *shp = NULL;
smbios_entry_t ep;
caddr_t stbuf, bios, p, q;
size_t bioslen;
int err;
if (file != NULL || (flags & ~SMB_O_MASK))
return (smb_open_error(shp, errp, ESMB_INVAL));
bioslen = SMB_RANGE_LIMIT - SMB_RANGE_START + 1;
bios = psm_map_phys(SMB_RANGE_START, bioslen, PSM_PROT_READ);
if (bios == NULL)
return (smb_open_error(shp, errp, ESMB_MAPDEV));
for (p = bios, q = bios + bioslen; p < q; p += 16) {
if (strncmp(p, SMB_ENTRY_EANCHOR, SMB_ENTRY_EANCHORLEN) == 0)
break;
}
if (p >= q) {
psm_unmap_phys(bios, bioslen);
return (smb_open_error(shp, errp, ESMB_NOTFOUND));
}
bcopy(p, &ep, sizeof (smbios_entry_t));
psm_unmap_phys(bios, bioslen);
bios = psm_map_phys(ep.smbe_staddr, ep.smbe_stlen, PSM_PROT_READ);
if (bios == NULL)
return (smb_open_error(shp, errp, ESMB_MAPDEV));
stbuf = smb_alloc(ep.smbe_stlen);
bcopy(bios, stbuf, ep.smbe_stlen);
psm_unmap_phys(bios, ep.smbe_stlen);
shp = smbios_bufopen(&ep, stbuf, ep.smbe_stlen, version, flags, &err);
if (shp == NULL) {
smb_free(stbuf, ep.smbe_stlen);
return (smb_open_error(shp, errp, err));
}
if (ksmbios == NULL) {
cmn_err(CE_CONT, "?SMBIOS v%u.%u loaded (%u bytes)",
ep.smbe_major, ep.smbe_minor, ep.smbe_stlen);
}
shp->sh_flags |= SMB_FL_BUFALLOC;
return (shp);
}
/*ARGSUSED*/
smbios_hdl_t *
smbios_fdopen(int fd, int version, int flags, int *errp)
{
return (smb_open_error(NULL, errp, ENOTSUP));
}
/*ARGSUSED*/
int
smbios_write(smbios_hdl_t *shp, int fd)
{
return (smb_set_errno(shp, ENOTSUP));
}
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