1 /* 2 * Copyright (C) 2017 Chelsio Communications. All rights reserved. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms and conditions of the GNU General Public License, 6 * version 2, as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 11 * more details. 12 * 13 * The full GNU General Public License is included in this distribution in 14 * the file called "COPYING". 15 * 16 */ 17 18 #include "cxgb4.h" 19 #include "cudbg_if.h" 20 #include "cudbg_lib_common.h" 21 22 int cudbg_get_buff(struct cudbg_buffer *pdbg_buff, u32 size, 23 struct cudbg_buffer *pin_buff) 24 { 25 u32 offset; 26 27 offset = pdbg_buff->offset; 28 if (offset + size > pdbg_buff->size) 29 return CUDBG_STATUS_NO_MEM; 30 31 pin_buff->data = (char *)pdbg_buff->data + offset; 32 pin_buff->offset = offset; 33 pin_buff->size = size; 34 pdbg_buff->size -= size; 35 return 0; 36 } 37 38 void cudbg_put_buff(struct cudbg_buffer *pin_buff, 39 struct cudbg_buffer *pdbg_buff) 40 { 41 pdbg_buff->size += pin_buff->size; 42 pin_buff->data = NULL; 43 pin_buff->offset = 0; 44 pin_buff->size = 0; 45 } 46 47 void cudbg_update_buff(struct cudbg_buffer *pin_buff, 48 struct cudbg_buffer *pout_buff) 49 { 50 /* We already write to buffer provided by ethool, so just 51 * increment offset to next free space. 52 */ 53 pout_buff->offset += pin_buff->size; 54 } 55