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/* ----------------------------------------------------------------------- *
*
* Copyright 2007-2008 H. Peter Anvin - All Rights Reserved
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall
* be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* ----------------------------------------------------------------------- */
/*
* pxe_get_cached.c
*
* PXE call "get cached info"
*/
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <com32.h>
#include <syslinux/pxe.h>
/* Returns the status code from PXE (0 on success),
or -1 on invocation failure */
int pxe_get_nic_type(t_PXENV_UNDI_GET_NIC_TYPE *gnt)
{
com32sys_t regs;
t_PXENV_UNDI_GET_NIC_TYPE *lgnt;
lgnt = lzalloc(sizeof *lgnt);
if (!lgnt)
return -1;
memset(®s, 0, sizeof regs);
regs.eax.w[0] = 0x0009;
regs.ebx.w[0] = PXENV_UNDI_GET_NIC_TYPE;
regs.es = SEG(lgnt);
/* regs.edi.w[0] = OFFS(lgnt); */
__intcall(0x22, ®s, ®s);
memcpy(gnt, lgnt, sizeof(t_PXENV_UNDI_GET_NIC_TYPE));
lfree(lgnt);
if (regs.eflags.l & EFLAGS_CF)
return -1;
return gnt->Status;
}
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