| 1 | // SPDX-License-Identifier: GPL-2.0-only |
|---|---|
| 2 | /* |
| 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 | |
| 10 | int 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 | |
| 36 | void 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 | |
| 49 | void 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 just |
| 53 | * increment offset to next free space. |
| 54 | */ |
| 55 | pout_buff->offset += pin_buff->size; |
| 56 | } |
| 57 |