/* QLogic qed NIC Driver * * Copyright (c) 2015 QLogic Corporation * * This software is available 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. */ #ifndef _QED_LL2_H #define _QED_LL2_H #include #include #include #include #include #include #include #include #include "qed.h" #include "qed_hsi.h" #include "qed_sp.h" #define QED_MAX_NUM_OF_LL2_CONNECTIONS (4) enum qed_ll2_roce_flavor_type { QED_LL2_ROCE, QED_LL2_RROCE, MAX_QED_LL2_ROCE_FLAVOR_TYPE }; enum qed_ll2_conn_type { QED_LL2_TYPE_RESERVED, QED_LL2_TYPE_ISCSI, QED_LL2_TYPE_TEST, QED_LL2_TYPE_ISCSI_OOO, QED_LL2_TYPE_RESERVED2, QED_LL2_TYPE_ROCE, QED_LL2_TYPE_RESERVED3, MAX_QED_LL2_RX_CONN_TYPE }; 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; enum qed_ll2_conn_type conn_type; u32 cid; u8 my_id; u8 queue_id; u8 tx_stats_id; bool b_active; u16 mtu; u8 rx_drop_ttl0_flg; u8 rx_vlan_removal_en; u8 tx_tc; enum core_tx_dest tx_dest; enum core_error_handle ai_err_packet_too_big; enum core_error_handle ai_err_no_buf; u8 tx_stats_en; struct qed_ll2_rx_queue rx_queue; struct qed_ll2_tx_queue tx_queue; u8 gsi_enable; }; /** * @brief qed_ll2_acquire_connection - allocate resources, * starts rx & tx (if relevant) queues pair. Provides * connecion handler as output parameter. * * @param p_hwfn * @param p_params Contain various configuration properties * @param rx_num_desc * @param tx_num_desc * * @param p_connection_handle Output container for LL2 connection's handle * * @return 0 on success, failure otherwise */ int qed_ll2_acquire_connection(struct qed_hwfn *p_hwfn, struct qed_ll2_info *p_params, u16 rx_num_desc, u16 tx_num_desc, u8 *p_connection_handle); /** * @brief qed_ll2_establish_connection - start previously * allocated LL2 queues pair * * @param p_hwfn * @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(struct qed_hwfn *p_hwfn, u8 connection_handle); /** * @brief qed_ll2_post_rx_buffers - submit buffers to LL2 Rx queue. * * @param p_hwfn * @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(struct qed_hwfn *p_hwfn, 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 p_hwfn * @param connection_handle LL2 connection's handle obtained from * qed_ll2_require_connection * @param num_of_bds a number of requested BD equals a number of * fragments in Tx packet * @param vlan VLAN to insert to packet (if insertion set) * @param bd_flags * @param l4_hdr_offset_w L4 Header Offset from start of packet * (in words). This is needed if both l4_csum * and ipv6_ext are set * @param first_frag * @param first_frag_len * @param cookie * * @param notify_fw * * @return 0 on success, failure otherwise */ int qed_ll2_prepare_tx_packet(struct qed_hwfn *p_hwfn, u8 connection_handle, u8 num_of_bds, u16 vlan, u8 bd_flags, u16 l4_hdr_offset_w, enum qed_ll2_roce_flavor_type qed_roce_flavor, dma_addr_t first_frag, u16 first_frag_len, void *cookie, u8 notify_fw); /** * @brief qed_ll2_release_connection - releases resources * allocated for LL2 connection * * @param p_hwfn * @param connection_handle LL2 connection's handle obtained from * qed_ll2_require_connection */ void qed_ll2_release_connection(struct qed_hwfn *p_hwfn, 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 p_hwfn * @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(struct qed_hwfn *p_hwfn, u8 connection_handle, dma_addr_t addr, u16 nbytes); /** * @brief qed_ll2_terminate_connection - stops Tx/Rx queues * * * @param p_hwfn * @param connection_handle LL2 connection's handle * obtained from * qed_ll2_require_connection * * @return 0 on success, failure otherwise */ int qed_ll2_terminate_connection(struct qed_hwfn *p_hwfn, u8 connection_handle); /** * @brief qed_ll2_get_stats - get LL2 queue's statistics * * * @param p_hwfn * @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(struct qed_hwfn *p_hwfn, u8 connection_handle, struct qed_ll2_stats *p_stats); /** * @brief qed_ll2_alloc - Allocates LL2 connections set * * @param p_hwfn * * @return pointer to alocated qed_ll2_info or NULL */ struct qed_ll2_info *qed_ll2_alloc(struct qed_hwfn *p_hwfn); /** * @brief qed_ll2_setup - Inits LL2 connections set * * @param p_hwfn * @param p_ll2_connections * */ void qed_ll2_setup(struct qed_hwfn *p_hwfn, struct qed_ll2_info *p_ll2_connections); /** * @brief qed_ll2_free - Releases LL2 connections set * * @param p_hwfn * @param p_ll2_connections * */ void qed_ll2_free(struct qed_hwfn *p_hwfn, struct qed_ll2_info *p_ll2_connections); void qed_ll2b_complete_rx_gsi_packet(struct qed_hwfn *p_hwfn, u8 connection_handle, void *cookie, dma_addr_t rx_buf_addr, u16 data_length, u8 data_length_error, u16 parse_flags, u16 vlan, u32 src_mac_addr_hi, u16 src_mac_addr_lo, bool b_last_packet); void qed_ll2b_complete_tx_gsi_packet(struct qed_hwfn *p_hwfn, u8 connection_handle, void *cookie, dma_addr_t first_frag_addr, bool b_last_fragment, bool b_last_packet); void qed_ll2b_release_tx_gsi_packet(struct qed_hwfn *p_hwfn, u8 connection_handle, void *cookie, dma_addr_t first_frag_addr, bool b_last_fragment, bool b_last_packet); #endif