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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright (C) 2017 Chelsio Communications. All rights reserved.4 */5 6#include "cxgb4.h"7#include "cudbg_if.h"8#include "cudbg_lib_common.h"9 10int cudbg_get_buff(struct cudbg_init *pdbg_init,11 struct cudbg_buffer *pdbg_buff, u32 size,12 struct cudbg_buffer *pin_buff)13{14 u32 offset;15 16 offset = pdbg_buff->offset;17 if (offset + size > pdbg_buff->size)18 return CUDBG_STATUS_NO_MEM;19 20 if (pdbg_init->compress_type != CUDBG_COMPRESSION_NONE) {21 if (size > pdbg_init->compress_buff_size)22 return CUDBG_STATUS_NO_MEM;23 24 pin_buff->data = (char *)pdbg_init->compress_buff;25 pin_buff->offset = 0;26 pin_buff->size = size;27 return 0;28 }29 30 pin_buff->data = (char *)pdbg_buff->data + offset;31 pin_buff->offset = offset;32 pin_buff->size = size;33 return 0;34}35 36void cudbg_put_buff(struct cudbg_init *pdbg_init,37 struct cudbg_buffer *pin_buff)38{39 /* Clear compression buffer for re-use */40 if (pdbg_init->compress_type != CUDBG_COMPRESSION_NONE)41 memset(pdbg_init->compress_buff, 0,42 pdbg_init->compress_buff_size);43 44 pin_buff->data = NULL;45 pin_buff->offset = 0;46 pin_buff->size = 0;47}48 49void cudbg_update_buff(struct cudbg_buffer *pin_buff,50 struct cudbg_buffer *pout_buff)51{52 /* We already write to buffer provided by ethool, so just53 * increment offset to next free space.54 */55 pout_buff->offset += pin_buff->size;56}57