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259 lines
6.7 KiB
259 lines
6.7 KiB
/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */ |
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/* QLogic qed NIC Driver |
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* Copyright (c) 2015-2017 QLogic Corporation |
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* Copyright (c) 2019-2020 Marvell International Ltd. |
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*/ |
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#ifndef _QED_LL2_H |
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#define _QED_LL2_H |
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#include <linux/types.h> |
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#include <linux/kernel.h> |
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#include <linux/list.h> |
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#include <linux/mutex.h> |
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#include <linux/slab.h> |
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#include <linux/spinlock.h> |
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#include <linux/qed/qed_chain.h> |
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#include <linux/qed/qed_ll2_if.h> |
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#include "qed.h" |
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#include "qed_hsi.h" |
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#include "qed_sp.h" |
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#define QED_MAX_NUM_OF_LL2_CONNECTIONS (4) |
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/* LL2 queues handles will be split as follows: |
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* first will be legacy queues, and then the ctx based queues. |
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*/ |
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#define QED_MAX_NUM_OF_LL2_CONNS_PF (4) |
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#define QED_MAX_NUM_OF_LEGACY_LL2_CONNS_PF (3) |
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#define QED_MAX_NUM_OF_CTX_LL2_CONNS_PF \ |
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(QED_MAX_NUM_OF_LL2_CONNS_PF - QED_MAX_NUM_OF_LEGACY_LL2_CONNS_PF) |
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#define QED_LL2_LEGACY_CONN_BASE_PF 0 |
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#define QED_LL2_CTX_CONN_BASE_PF QED_MAX_NUM_OF_LEGACY_LL2_CONNS_PF |
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struct qed_ll2_rx_packet { |
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struct list_head list_entry; |
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struct core_rx_bd_with_buff_len *rxq_bd; |
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dma_addr_t rx_buf_addr; |
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u16 buf_length; |
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void *cookie; |
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u8 placement_offset; |
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u16 parse_flags; |
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u16 packet_length; |
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u16 vlan; |
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u32 opaque_data[2]; |
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}; |
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struct qed_ll2_tx_packet { |
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struct list_head list_entry; |
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u16 bd_used; |
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bool notify_fw; |
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void *cookie; |
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/* Flexible Array of bds_set determined by max_bds_per_packet */ |
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struct { |
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struct core_tx_bd *txq_bd; |
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dma_addr_t tx_frag; |
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u16 frag_len; |
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} bds_set[]; |
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}; |
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struct qed_ll2_rx_queue { |
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/* Lock protecting the Rx queue manipulation */ |
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spinlock_t lock; |
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struct qed_chain rxq_chain; |
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struct qed_chain rcq_chain; |
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u8 rx_sb_index; |
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u8 ctx_based; |
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bool b_cb_registered; |
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__le16 *p_fw_cons; |
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struct list_head active_descq; |
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struct list_head free_descq; |
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struct list_head posting_descq; |
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struct qed_ll2_rx_packet *descq_array; |
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void __iomem *set_prod_addr; |
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struct core_pwm_prod_update_data db_data; |
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}; |
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struct qed_ll2_tx_queue { |
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/* Lock protecting the Tx queue manipulation */ |
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spinlock_t lock; |
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struct qed_chain txq_chain; |
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u8 tx_sb_index; |
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bool b_cb_registered; |
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__le16 *p_fw_cons; |
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struct list_head active_descq; |
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struct list_head free_descq; |
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struct list_head sending_descq; |
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u16 cur_completing_bd_idx; |
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void __iomem *doorbell_addr; |
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struct core_db_data db_msg; |
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u16 bds_idx; |
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u16 cur_send_frag_num; |
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u16 cur_completing_frag_num; |
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bool b_completing_packet; |
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void *descq_mem; /* memory for variable sized qed_ll2_tx_packet*/ |
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struct qed_ll2_tx_packet *cur_send_packet; |
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struct qed_ll2_tx_packet cur_completing_packet; |
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}; |
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struct qed_ll2_info { |
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/* Lock protecting the state of LL2 */ |
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struct mutex mutex; |
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struct qed_ll2_acquire_data_inputs input; |
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u32 cid; |
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u8 my_id; |
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u8 queue_id; |
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u8 tx_stats_id; |
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bool b_active; |
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enum core_tx_dest tx_dest; |
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u8 tx_stats_en; |
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bool main_func_queue; |
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struct qed_ll2_rx_queue rx_queue; |
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struct qed_ll2_tx_queue tx_queue; |
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struct qed_ll2_cbs cbs; |
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}; |
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extern const struct qed_ll2_ops qed_ll2_ops_pass; |
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/** |
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* @brief qed_ll2_acquire_connection - allocate resources, |
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* starts rx & tx (if relevant) queues pair. Provides |
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* connecion handler as output parameter. |
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* |
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* |
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* @param cxt - pointer to the hw-function [opaque to some] |
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* @param data - describes connection parameters |
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* @return int |
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*/ |
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int qed_ll2_acquire_connection(void *cxt, struct qed_ll2_acquire_data *data); |
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/** |
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* @brief qed_ll2_establish_connection - start previously |
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* allocated LL2 queues pair |
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* |
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* @param cxt - pointer to the hw-function [opaque to some] |
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* @param p_ptt |
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* @param connection_handle LL2 connection's handle obtained from |
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* qed_ll2_require_connection |
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* |
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* @return 0 on success, failure otherwise |
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*/ |
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int qed_ll2_establish_connection(void *cxt, u8 connection_handle); |
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/** |
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* @brief qed_ll2_post_rx_buffers - submit buffers to LL2 Rx queue. |
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* |
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* @param cxt - pointer to the hw-function [opaque to some] |
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* @param connection_handle LL2 connection's handle obtained from |
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* qed_ll2_require_connection |
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* @param addr rx (physical address) buffers to submit |
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* @param cookie |
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* @param notify_fw produce corresponding Rx BD immediately |
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* |
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* @return 0 on success, failure otherwise |
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*/ |
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int qed_ll2_post_rx_buffer(void *cxt, |
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u8 connection_handle, |
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dma_addr_t addr, |
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u16 buf_len, void *cookie, u8 notify_fw); |
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/** |
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* @brief qed_ll2_prepare_tx_packet - request for start Tx BD |
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* to prepare Tx packet submission to FW. |
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* |
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* @param cxt - pointer to the hw-function [opaque to some] |
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* @param connection_handle |
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* @param pkt - info regarding the tx packet |
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* @param notify_fw - issue doorbell to fw for this packet |
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* |
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* @return 0 on success, failure otherwise |
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*/ |
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int qed_ll2_prepare_tx_packet(void *cxt, |
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u8 connection_handle, |
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struct qed_ll2_tx_pkt_info *pkt, |
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bool notify_fw); |
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/** |
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* @brief qed_ll2_release_connection - releases resources |
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* allocated for LL2 connection |
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* |
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* @param cxt - pointer to the hw-function [opaque to some] |
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* @param connection_handle LL2 connection's handle obtained from |
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* qed_ll2_require_connection |
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*/ |
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void qed_ll2_release_connection(void *cxt, u8 connection_handle); |
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/** |
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* @brief qed_ll2_set_fragment_of_tx_packet - provides fragments to fill |
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* Tx BD of BDs requested by |
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* qed_ll2_prepare_tx_packet |
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* |
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* @param cxt - pointer to the hw-function [opaque to some] |
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* @param connection_handle LL2 connection's handle |
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* obtained from |
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* qed_ll2_require_connection |
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* @param addr |
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* @param nbytes |
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* |
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* @return 0 on success, failure otherwise |
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*/ |
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int qed_ll2_set_fragment_of_tx_packet(void *cxt, |
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u8 connection_handle, |
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dma_addr_t addr, u16 nbytes); |
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/** |
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* @brief qed_ll2_terminate_connection - stops Tx/Rx queues |
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* |
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* |
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* @param cxt - pointer to the hw-function [opaque to some] |
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* @param connection_handle LL2 connection's handle |
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* obtained from |
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* qed_ll2_require_connection |
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* |
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* @return 0 on success, failure otherwise |
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*/ |
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int qed_ll2_terminate_connection(void *cxt, u8 connection_handle); |
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/** |
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* @brief qed_ll2_get_stats - get LL2 queue's statistics |
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* |
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* |
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* @param cxt - pointer to the hw-function [opaque to some] |
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* @param connection_handle LL2 connection's handle obtained from |
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* qed_ll2_require_connection |
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* @param p_stats |
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* |
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* @return 0 on success, failure otherwise |
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*/ |
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int qed_ll2_get_stats(void *cxt, |
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u8 connection_handle, struct qed_ll2_stats *p_stats); |
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/** |
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* @brief qed_ll2_alloc - Allocates LL2 connections set |
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* |
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* @param p_hwfn |
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* |
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* @return int |
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*/ |
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int qed_ll2_alloc(struct qed_hwfn *p_hwfn); |
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/** |
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* @brief qed_ll2_setup - Inits LL2 connections set |
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* |
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* @param p_hwfn |
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* |
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*/ |
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void qed_ll2_setup(struct qed_hwfn *p_hwfn); |
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/** |
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* @brief qed_ll2_free - Releases LL2 connections set |
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* |
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* @param p_hwfn |
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* |
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*/ |
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void qed_ll2_free(struct qed_hwfn *p_hwfn); |
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#endif
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