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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*-
* Copyright (c) 2019 Chelsio Communications, Inc.
* 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 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.
*/
#include <sys/types.h>
#include <sys/param.h>
#ifdef _KERNEL
#include "common/common.h"
#else
#include <stdio.h>
#include <string.h>
#endif
#include "cudbg.h"
#include "cudbg_lib_common.h"
int
get_scratch_buff(struct cudbg_buffer *pdbg_buff, u32 size,
struct cudbg_buffer *pscratch_buff)
{
u32 scratch_offset;
int rc = 0;
scratch_offset = pdbg_buff->size - size;
if (pdbg_buff->offset > (int)scratch_offset || pdbg_buff->size < size) {
rc = CUDBG_STATUS_NO_SCRATCH_MEM;
goto err;
} else {
pscratch_buff->data = (char *)pdbg_buff->data + scratch_offset;
pscratch_buff->offset = 0;
pscratch_buff->size = size;
pdbg_buff->size -= size;
}
err:
return rc;
}
void
release_scratch_buff(struct cudbg_buffer *pscratch_buff,
struct cudbg_buffer *pdbg_buff)
{
pdbg_buff->size += pscratch_buff->size;
/* Reset the used buffer to zero.
* If we dont do this, then it will effect the ext entity logic.
*/
memset(pscratch_buff->data, 0, pscratch_buff->size);
pscratch_buff->data = NULL;
pscratch_buff->offset = 0;
pscratch_buff->size = 0;
}
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