1a7975a2fSRahul Lakkireddy /* 2a7975a2fSRahul Lakkireddy * Copyright (C) 2017 Chelsio Communications. All rights reserved. 3a7975a2fSRahul Lakkireddy * 4a7975a2fSRahul Lakkireddy * This program is free software; you can redistribute it and/or modify it 5a7975a2fSRahul Lakkireddy * under the terms and conditions of the GNU General Public License, 6a7975a2fSRahul Lakkireddy * version 2, as published by the Free Software Foundation. 7a7975a2fSRahul Lakkireddy * 8a7975a2fSRahul Lakkireddy * This program is distributed in the hope it will be useful, but WITHOUT 9a7975a2fSRahul Lakkireddy * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10a7975a2fSRahul Lakkireddy * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 11a7975a2fSRahul Lakkireddy * more details. 12a7975a2fSRahul Lakkireddy * 13a7975a2fSRahul Lakkireddy * The full GNU General Public License is included in this distribution in 14a7975a2fSRahul Lakkireddy * the file called "COPYING". 15a7975a2fSRahul Lakkireddy * 16a7975a2fSRahul Lakkireddy */ 17a7975a2fSRahul Lakkireddy 18a7975a2fSRahul Lakkireddy #include "cxgb4.h" 19a7975a2fSRahul Lakkireddy #include "cudbg_if.h" 20a7975a2fSRahul Lakkireddy #include "cudbg_lib_common.h" 21a7975a2fSRahul Lakkireddy 22a7975a2fSRahul Lakkireddy int cudbg_get_buff(struct cudbg_buffer *pdbg_buff, u32 size, 23a7975a2fSRahul Lakkireddy struct cudbg_buffer *pin_buff) 24a7975a2fSRahul Lakkireddy { 25a7975a2fSRahul Lakkireddy u32 offset; 26a7975a2fSRahul Lakkireddy 27a7975a2fSRahul Lakkireddy offset = pdbg_buff->offset; 28a7975a2fSRahul Lakkireddy if (offset + size > pdbg_buff->size) 29a7975a2fSRahul Lakkireddy return CUDBG_STATUS_NO_MEM; 30a7975a2fSRahul Lakkireddy 31a7975a2fSRahul Lakkireddy pin_buff->data = (char *)pdbg_buff->data + offset; 32a7975a2fSRahul Lakkireddy pin_buff->offset = offset; 33a7975a2fSRahul Lakkireddy pin_buff->size = size; 34a7975a2fSRahul Lakkireddy pdbg_buff->size -= size; 35a7975a2fSRahul Lakkireddy return 0; 36a7975a2fSRahul Lakkireddy } 37a7975a2fSRahul Lakkireddy 38a7975a2fSRahul Lakkireddy void cudbg_put_buff(struct cudbg_buffer *pin_buff, 39a7975a2fSRahul Lakkireddy struct cudbg_buffer *pdbg_buff) 40a7975a2fSRahul Lakkireddy { 41a7975a2fSRahul Lakkireddy pdbg_buff->size += pin_buff->size; 42a7975a2fSRahul Lakkireddy pin_buff->data = NULL; 43a7975a2fSRahul Lakkireddy pin_buff->offset = 0; 44a7975a2fSRahul Lakkireddy pin_buff->size = 0; 45a7975a2fSRahul Lakkireddy } 46a7975a2fSRahul Lakkireddy 47a7975a2fSRahul Lakkireddy void cudbg_update_buff(struct cudbg_buffer *pin_buff, 48a7975a2fSRahul Lakkireddy struct cudbg_buffer *pout_buff) 49a7975a2fSRahul Lakkireddy { 50a7975a2fSRahul Lakkireddy /* We already write to buffer provided by ethool, so just 51a7975a2fSRahul Lakkireddy * increment offset to next free space. 52a7975a2fSRahul Lakkireddy */ 53a7975a2fSRahul Lakkireddy pout_buff->offset += pin_buff->size; 54a7975a2fSRahul Lakkireddy } 55