1 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */ 2 /* QLogic qed NIC Driver 3 * Copyright (c) 2015-2017 QLogic Corporation 4 * Copyright (c) 2019-2020 Marvell International Ltd. 5 */ 6 7 #ifndef _QED_ISCSI_IF_H 8 #define _QED_ISCSI_IF_H 9 #include <linux/types.h> 10 #include <linux/qed/qed_if.h> 11 12 typedef int (*iscsi_event_cb_t) (void *context, 13 u8 fw_event_code, void *fw_handle); 14 struct qed_iscsi_stats { 15 u64 iscsi_rx_bytes_cnt; 16 u64 iscsi_rx_packet_cnt; 17 u64 iscsi_rx_new_ooo_isle_events_cnt; 18 u32 iscsi_cmdq_threshold_cnt; 19 u32 iscsi_rq_threshold_cnt; 20 u32 iscsi_immq_threshold_cnt; 21 22 u64 iscsi_rx_dropped_pdus_task_not_valid; 23 24 u64 iscsi_rx_data_pdu_cnt; 25 u64 iscsi_rx_r2t_pdu_cnt; 26 u64 iscsi_rx_total_pdu_cnt; 27 28 u64 iscsi_tx_go_to_slow_start_event_cnt; 29 u64 iscsi_tx_fast_retransmit_event_cnt; 30 31 u64 iscsi_tx_data_pdu_cnt; 32 u64 iscsi_tx_r2t_pdu_cnt; 33 u64 iscsi_tx_total_pdu_cnt; 34 35 u64 iscsi_tx_bytes_cnt; 36 u64 iscsi_tx_packet_cnt; 37 }; 38 39 struct qed_dev_iscsi_info { 40 struct qed_dev_info common; 41 42 void __iomem *primary_dbq_rq_addr; 43 void __iomem *secondary_bdq_rq_addr; 44 45 u8 num_cqs; 46 }; 47 48 struct qed_iscsi_id_params { 49 u8 mac[ETH_ALEN]; 50 u32 ip[4]; 51 u16 port; 52 }; 53 54 struct qed_iscsi_params_offload { 55 u8 layer_code; 56 dma_addr_t sq_pbl_addr; 57 u32 initial_ack; 58 59 struct qed_iscsi_id_params src; 60 struct qed_iscsi_id_params dst; 61 u16 vlan_id; 62 u8 tcp_flags; 63 u8 ip_version; 64 u8 default_cq; 65 66 u8 ka_max_probe_cnt; 67 u8 dup_ack_theshold; 68 u32 rcv_next; 69 u32 snd_una; 70 u32 snd_next; 71 u32 snd_max; 72 u32 snd_wnd; 73 u32 rcv_wnd; 74 u32 snd_wl1; 75 u32 cwnd; 76 u32 ss_thresh; 77 u16 srtt; 78 u16 rtt_var; 79 u32 ts_recent; 80 u32 ts_recent_age; 81 u32 total_rt; 82 u32 ka_timeout_delta; 83 u32 rt_timeout_delta; 84 u8 dup_ack_cnt; 85 u8 snd_wnd_probe_cnt; 86 u8 ka_probe_cnt; 87 u8 rt_cnt; 88 u32 flow_label; 89 u32 ka_timeout; 90 u32 ka_interval; 91 u32 max_rt_time; 92 u32 initial_rcv_wnd; 93 u8 ttl; 94 u8 tos_or_tc; 95 u16 remote_port; 96 u16 local_port; 97 u16 mss; 98 u8 snd_wnd_scale; 99 u8 rcv_wnd_scale; 100 u16 da_timeout_value; 101 u8 ack_frequency; 102 }; 103 104 struct qed_iscsi_params_update { 105 u8 update_flag; 106 #define QED_ISCSI_CONN_HD_EN BIT(0) 107 #define QED_ISCSI_CONN_DD_EN BIT(1) 108 #define QED_ISCSI_CONN_INITIAL_R2T BIT(2) 109 #define QED_ISCSI_CONN_IMMEDIATE_DATA BIT(3) 110 111 u32 max_seq_size; 112 u32 max_recv_pdu_length; 113 u32 max_send_pdu_length; 114 u32 first_seq_length; 115 u32 exp_stat_sn; 116 }; 117 118 #define MAX_TID_BLOCKS_ISCSI (512) 119 struct qed_iscsi_tid { 120 u32 size; /* In bytes per task */ 121 u32 num_tids_per_block; 122 u8 *blocks[MAX_TID_BLOCKS_ISCSI]; 123 }; 124 125 struct qed_iscsi_cb_ops { 126 struct qed_common_cb_ops common; 127 }; 128 129 /** 130 * struct qed_iscsi_ops - qed iSCSI operations. 131 * @common: common operations pointer 132 * @ll2: light L2 operations pointer 133 * @fill_dev_info: fills iSCSI specific information 134 * @param cdev 135 * @param info 136 * @return 0 on sucesss, otherwise error value. 137 * @register_ops: register iscsi operations 138 * @param cdev 139 * @param ops - specified using qed_iscsi_cb_ops 140 * @param cookie - driver private 141 * @start: iscsi in FW 142 * @param cdev 143 * @param tasks - qed will fill information about tasks 144 * return 0 on success, otherwise error value. 145 * @stop: iscsi in FW 146 * @param cdev 147 * return 0 on success, otherwise error value. 148 * @acquire_conn: acquire a new iscsi connection 149 * @param cdev 150 * @param handle - qed will fill handle that should be 151 * used henceforth as identifier of the 152 * connection. 153 * @param p_doorbell - qed will fill the address of the 154 * doorbell. 155 * @return 0 on sucesss, otherwise error value. 156 * @release_conn: release a previously acquired iscsi connection 157 * @param cdev 158 * @param handle - the connection handle. 159 * @return 0 on success, otherwise error value. 160 * @offload_conn: configures an offloaded connection 161 * @param cdev 162 * @param handle - the connection handle. 163 * @param conn_info - the configuration to use for the 164 * offload. 165 * @return 0 on success, otherwise error value. 166 * @update_conn: updates an offloaded connection 167 * @param cdev 168 * @param handle - the connection handle. 169 * @param conn_info - the configuration to use for the 170 * offload. 171 * @return 0 on success, otherwise error value. 172 * @destroy_conn: stops an offloaded connection 173 * @param cdev 174 * @param handle - the connection handle. 175 * @return 0 on success, otherwise error value. 176 * @clear_sq: clear all task in sq 177 * @param cdev 178 * @param handle - the connection handle. 179 * @return 0 on success, otherwise error value. 180 * @get_stats: iSCSI related statistics 181 * @param cdev 182 * @param stats - pointer to struck that would be filled 183 * we stats 184 * @return 0 on success, error otherwise. 185 * @change_mac: Change MAC of interface 186 * @param cdev 187 * @param handle - the connection handle. 188 * @param mac - new MAC to configure. 189 * @return 0 on success, otherwise error value. 190 */ 191 struct qed_iscsi_ops { 192 const struct qed_common_ops *common; 193 194 const struct qed_ll2_ops *ll2; 195 196 int (*fill_dev_info)(struct qed_dev *cdev, 197 struct qed_dev_iscsi_info *info); 198 199 void (*register_ops)(struct qed_dev *cdev, 200 struct qed_iscsi_cb_ops *ops, void *cookie); 201 202 int (*start)(struct qed_dev *cdev, 203 struct qed_iscsi_tid *tasks, 204 void *event_context, iscsi_event_cb_t async_event_cb); 205 206 int (*stop)(struct qed_dev *cdev); 207 208 int (*acquire_conn)(struct qed_dev *cdev, 209 u32 *handle, 210 u32 *fw_cid, void __iomem **p_doorbell); 211 212 int (*release_conn)(struct qed_dev *cdev, u32 handle); 213 214 int (*offload_conn)(struct qed_dev *cdev, 215 u32 handle, 216 struct qed_iscsi_params_offload *conn_info); 217 218 int (*update_conn)(struct qed_dev *cdev, 219 u32 handle, 220 struct qed_iscsi_params_update *conn_info); 221 222 int (*destroy_conn)(struct qed_dev *cdev, u32 handle, u8 abrt_conn); 223 224 int (*clear_sq)(struct qed_dev *cdev, u32 handle); 225 226 int (*get_stats)(struct qed_dev *cdev, 227 struct qed_iscsi_stats *stats); 228 229 int (*change_mac)(struct qed_dev *cdev, u32 handle, const u8 *mac); 230 }; 231 232 const struct qed_iscsi_ops *qed_get_iscsi_ops(void); 233 void qed_put_iscsi_ops(void); 234 #endif 235