| /* QLogic qed NIC Driver |
| * Copyright (c) 2015-2017 QLogic Corporation |
| * |
| * This software is available to you under a choice of one of two |
| * licenses. You may choose to be licensed under the terms of the GNU |
| * General Public License (GPL) Version 2, available from the file |
| * COPYING in the main directory of this source tree, or the |
| * OpenIB.org BSD license below: |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and /or other materials |
| * provided with the distribution. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| |
| #ifndef _QED_LL2_H |
| #define _QED_LL2_H |
| |
| #include <linux/types.h> |
| #include <linux/kernel.h> |
| #include <linux/list.h> |
| #include <linux/mutex.h> |
| #include <linux/slab.h> |
| #include <linux/spinlock.h> |
| #include <linux/qed/qed_chain.h> |
| #include <linux/qed/qed_ll2_if.h> |
| #include "qed.h" |
| #include "qed_hsi.h" |
| #include "qed_sp.h" |
| |
| #define QED_MAX_NUM_OF_LL2_CONNECTIONS (4) |
| |
| struct qed_ll2_rx_packet { |
| struct list_head list_entry; |
| struct core_rx_bd_with_buff_len *rxq_bd; |
| dma_addr_t rx_buf_addr; |
| u16 buf_length; |
| void *cookie; |
| u8 placement_offset; |
| u16 parse_flags; |
| u16 packet_length; |
| u16 vlan; |
| u32 opaque_data[2]; |
| }; |
| |
| struct qed_ll2_tx_packet { |
| struct list_head list_entry; |
| u16 bd_used; |
| u16 vlan; |
| u16 l4_hdr_offset_w; |
| u8 bd_flags; |
| bool notify_fw; |
| void *cookie; |
| |
| struct { |
| struct core_tx_bd *txq_bd; |
| dma_addr_t tx_frag; |
| u16 frag_len; |
| } bds_set[ETH_TX_MAX_BDS_PER_NON_LSO_PACKET]; |
| }; |
| |
| struct qed_ll2_rx_queue { |
| /* Lock protecting the Rx queue manipulation */ |
| spinlock_t lock; |
| struct qed_chain rxq_chain; |
| struct qed_chain rcq_chain; |
| u8 rx_sb_index; |
| bool b_cb_registred; |
| __le16 *p_fw_cons; |
| struct list_head active_descq; |
| struct list_head free_descq; |
| struct list_head posting_descq; |
| struct qed_ll2_rx_packet *descq_array; |
| void __iomem *set_prod_addr; |
| }; |
| |
| struct qed_ll2_tx_queue { |
| /* Lock protecting the Tx queue manipulation */ |
| spinlock_t lock; |
| struct qed_chain txq_chain; |
| u8 tx_sb_index; |
| bool b_cb_registred; |
| __le16 *p_fw_cons; |
| struct list_head active_descq; |
| struct list_head free_descq; |
| struct list_head sending_descq; |
| struct qed_ll2_tx_packet *descq_array; |
| struct qed_ll2_tx_packet *cur_send_packet; |
| struct qed_ll2_tx_packet cur_completing_packet; |
| u16 cur_completing_bd_idx; |
| void __iomem *doorbell_addr; |
| u16 bds_idx; |
| u16 cur_send_frag_num; |
| u16 cur_completing_frag_num; |
| bool b_completing_packet; |
| }; |
| |
| struct qed_ll2_info { |
| /* Lock protecting the state of LL2 */ |
| struct mutex mutex; |
| |
| struct qed_ll2_acquire_data_inputs input; |
| u32 cid; |
| u8 my_id; |
| u8 queue_id; |
| u8 tx_stats_id; |
| bool b_active; |
| enum core_tx_dest tx_dest; |
| u8 tx_stats_en; |
| struct qed_ll2_rx_queue rx_queue; |
| struct qed_ll2_tx_queue tx_queue; |
| struct qed_ll2_cbs cbs; |
| }; |
| |
| /** |
| * @brief qed_ll2_acquire_connection - allocate resources, |
| * starts rx & tx (if relevant) queues pair. Provides |
| * connecion handler as output parameter. |
| * |
| * |
| * @param cxt - pointer to the hw-function [opaque to some] |
| * @param data - describes connection parameters |
| * @return int |
| */ |
| int qed_ll2_acquire_connection(void *cxt, struct qed_ll2_acquire_data *data); |
| |
| /** |
| * @brief qed_ll2_establish_connection - start previously |
| * allocated LL2 queues pair |
| * |
| * @param cxt - pointer to the hw-function [opaque to some] |
| * @param p_ptt |
| * @param connection_handle LL2 connection's handle obtained from |
| * qed_ll2_require_connection |
| * |
| * @return 0 on success, failure otherwise |
| */ |
| int qed_ll2_establish_connection(void *cxt, u8 connection_handle); |
| |
| /** |
| * @brief qed_ll2_post_rx_buffers - submit buffers to LL2 Rx queue. |
| * |
| * @param cxt - pointer to the hw-function [opaque to some] |
| * @param connection_handle LL2 connection's handle obtained from |
| * qed_ll2_require_connection |
| * @param addr rx (physical address) buffers to submit |
| * @param cookie |
| * @param notify_fw produce corresponding Rx BD immediately |
| * |
| * @return 0 on success, failure otherwise |
| */ |
| int qed_ll2_post_rx_buffer(void *cxt, |
| u8 connection_handle, |
| dma_addr_t addr, |
| u16 buf_len, void *cookie, u8 notify_fw); |
| |
| /** |
| * @brief qed_ll2_prepare_tx_packet - request for start Tx BD |
| * to prepare Tx packet submission to FW. |
| * |
| * @param cxt - pointer to the hw-function [opaque to some] |
| * @param connection_handle |
| * @param pkt - info regarding the tx packet |
| * @param notify_fw - issue doorbell to fw for this packet |
| * |
| * @return 0 on success, failure otherwise |
| */ |
| int qed_ll2_prepare_tx_packet(void *cxt, |
| u8 connection_handle, |
| struct qed_ll2_tx_pkt_info *pkt, |
| bool notify_fw); |
| |
| /** |
| * @brief qed_ll2_release_connection - releases resources |
| * allocated for LL2 connection |
| * |
| * @param cxt - pointer to the hw-function [opaque to some] |
| * @param connection_handle LL2 connection's handle obtained from |
| * qed_ll2_require_connection |
| */ |
| void qed_ll2_release_connection(void *cxt, u8 connection_handle); |
| |
| /** |
| * @brief qed_ll2_set_fragment_of_tx_packet - provides fragments to fill |
| * Tx BD of BDs requested by |
| * qed_ll2_prepare_tx_packet |
| * |
| * @param cxt - pointer to the hw-function [opaque to some] |
| * @param connection_handle LL2 connection's handle |
| * obtained from |
| * qed_ll2_require_connection |
| * @param addr |
| * @param nbytes |
| * |
| * @return 0 on success, failure otherwise |
| */ |
| int qed_ll2_set_fragment_of_tx_packet(void *cxt, |
| u8 connection_handle, |
| dma_addr_t addr, u16 nbytes); |
| |
| /** |
| * @brief qed_ll2_terminate_connection - stops Tx/Rx queues |
| * |
| * |
| * @param cxt - pointer to the hw-function [opaque to some] |
| * @param connection_handle LL2 connection's handle |
| * obtained from |
| * qed_ll2_require_connection |
| * |
| * @return 0 on success, failure otherwise |
| */ |
| int qed_ll2_terminate_connection(void *cxt, u8 connection_handle); |
| |
| /** |
| * @brief qed_ll2_get_stats - get LL2 queue's statistics |
| * |
| * |
| * @param cxt - pointer to the hw-function [opaque to some] |
| * @param connection_handle LL2 connection's handle obtained from |
| * qed_ll2_require_connection |
| * @param p_stats |
| * |
| * @return 0 on success, failure otherwise |
| */ |
| int qed_ll2_get_stats(void *cxt, |
| u8 connection_handle, struct qed_ll2_stats *p_stats); |
| |
| /** |
| * @brief qed_ll2_alloc - Allocates LL2 connections set |
| * |
| * @param p_hwfn |
| * |
| * @return int |
| */ |
| int qed_ll2_alloc(struct qed_hwfn *p_hwfn); |
| |
| /** |
| * @brief qed_ll2_setup - Inits LL2 connections set |
| * |
| * @param p_hwfn |
| * |
| */ |
| void qed_ll2_setup(struct qed_hwfn *p_hwfn); |
| |
| /** |
| * @brief qed_ll2_free - Releases LL2 connections set |
| * |
| * @param p_hwfn |
| * |
| */ |
| void qed_ll2_free(struct qed_hwfn *p_hwfn); |
| |
| #endif |