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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2017 Chelsio Communications. All rights reserved.
*/
#include "cxgb4.h"
#include "cudbg_if.h"
#include "cudbg_lib_common.h"
int cudbg_get_buff(struct cudbg_init *pdbg_init,
struct cudbg_buffer *pdbg_buff, u32 size,
struct cudbg_buffer *pin_buff)
{
u32 offset;
offset = pdbg_buff->offset;
if (offset + size > pdbg_buff->size)
return CUDBG_STATUS_NO_MEM;
if (pdbg_init->compress_type != CUDBG_COMPRESSION_NONE) {
if (size > pdbg_init->compress_buff_size)
return CUDBG_STATUS_NO_MEM;
pin_buff->data = (char *)pdbg_init->compress_buff;
pin_buff->offset = 0;
pin_buff->size = size;
return 0;
}
pin_buff->data = (char *)pdbg_buff->data + offset;
pin_buff->offset = offset;
pin_buff->size = size;
return 0;
}
void cudbg_put_buff(struct cudbg_init *pdbg_init,
struct cudbg_buffer *pin_buff)
{
/* Clear compression buffer for re-use */
if (pdbg_init->compress_type != CUDBG_COMPRESSION_NONE)
memset(pdbg_init->compress_buff, 0,
pdbg_init->compress_buff_size);
pin_buff->data = NULL;
pin_buff->offset = 0;
pin_buff->size = 0;
}
void cudbg_update_buff(struct cudbg_buffer *pin_buff,
struct cudbg_buffer *pout_buff)
{
/* We already write to buffer provided by ethool, so just
* increment offset to next free space.
*/
pout_buff->offset += pin_buff->size;
}
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