diff options
Diffstat (limited to 'drivers/net/ethernet/qlogic/qed/qed_ll2.h')
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed_ll2.h | 316 |
1 files changed, 316 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.h b/drivers/net/ethernet/qlogic/qed/qed_ll2.h new file mode 100644 index 000000000000..80a5dc2d652d --- /dev/null +++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.h @@ -0,0 +1,316 @@ +/* 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 <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) + +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 |