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 success, 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 success, 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 | |