| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|---|
| 2 | /* |
| 3 | * This file is based on code from OCTEON SDK by Cavium Networks. |
| 4 | * |
| 5 | * Copyright (c) 2003-2007 Cavium Networks |
| 6 | */ |
| 7 | |
| 8 | void cvm_oct_poll_controller(struct net_device *dev); |
| 9 | void cvm_oct_rx_initialize(void); |
| 10 | void cvm_oct_rx_shutdown(void); |
| 11 | |
| 12 | static inline void cvm_oct_rx_refill_pool(int fill_threshold) |
| 13 | { |
| 14 | int number_to_free; |
| 15 | int num_freed; |
| 16 | /* Refill the packet buffer pool */ |
| 17 | number_to_free = |
| 18 | cvmx_fau_fetch_and_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE, value: 0); |
| 19 | |
| 20 | if (number_to_free > fill_threshold) { |
| 21 | cvmx_fau_atomic_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE, |
| 22 | value: -number_to_free); |
| 23 | num_freed = cvm_oct_mem_fill_fpa(CVMX_FPA_PACKET_POOL, |
| 24 | CVMX_FPA_PACKET_POOL_SIZE, |
| 25 | elements: number_to_free); |
| 26 | if (num_freed != number_to_free) { |
| 27 | cvmx_fau_atomic_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE, |
| 28 | value: number_to_free - num_freed); |
| 29 | } |
| 30 | } |
| 31 | } |
| 32 |