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fc831825 | 1 | /* QLogic qed NIC Driver |
e8f1cb50 | 2 | * Copyright (c) 2015-2017 QLogic Corporation |
fc831825 | 3 | * |
e8f1cb50 MY |
4 | * This software is available to you under a choice of one of two |
5 | * licenses. You may choose to be licensed under the terms of the GNU | |
6 | * General Public License (GPL) Version 2, available from the file | |
7 | * COPYING in the main directory of this source tree, or the | |
8 | * OpenIB.org BSD license below: | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or | |
11 | * without modification, are permitted provided that the following | |
12 | * conditions are met: | |
13 | * | |
14 | * - Redistributions of source code must retain the above | |
15 | * copyright notice, this list of conditions and the following | |
16 | * disclaimer. | |
17 | * | |
18 | * - Redistributions in binary form must reproduce the above | |
19 | * copyright notice, this list of conditions and the following | |
20 | * disclaimer in the documentation and /or other materials | |
21 | * provided with the distribution. | |
22 | * | |
23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
30 | * SOFTWARE. | |
fc831825 YM |
31 | */ |
32 | ||
33 | #ifndef _QED_ISCSI_IF_H | |
34 | #define _QED_ISCSI_IF_H | |
35 | #include <linux/types.h> | |
36 | #include <linux/qed/qed_if.h> | |
37 | ||
38 | typedef int (*iscsi_event_cb_t) (void *context, | |
39 | u8 fw_event_code, void *fw_handle); | |
40 | struct qed_iscsi_stats { | |
41 | u64 iscsi_rx_bytes_cnt; | |
42 | u64 iscsi_rx_packet_cnt; | |
43 | u64 iscsi_rx_new_ooo_isle_events_cnt; | |
44 | u32 iscsi_cmdq_threshold_cnt; | |
45 | u32 iscsi_rq_threshold_cnt; | |
46 | u32 iscsi_immq_threshold_cnt; | |
47 | ||
48 | u64 iscsi_rx_dropped_pdus_task_not_valid; | |
49 | ||
50 | u64 iscsi_rx_data_pdu_cnt; | |
51 | u64 iscsi_rx_r2t_pdu_cnt; | |
52 | u64 iscsi_rx_total_pdu_cnt; | |
53 | ||
54 | u64 iscsi_tx_go_to_slow_start_event_cnt; | |
55 | u64 iscsi_tx_fast_retransmit_event_cnt; | |
56 | ||
57 | u64 iscsi_tx_data_pdu_cnt; | |
58 | u64 iscsi_tx_r2t_pdu_cnt; | |
59 | u64 iscsi_tx_total_pdu_cnt; | |
60 | ||
61 | u64 iscsi_tx_bytes_cnt; | |
62 | u64 iscsi_tx_packet_cnt; | |
63 | }; | |
64 | ||
65 | struct qed_dev_iscsi_info { | |
66 | struct qed_dev_info common; | |
67 | ||
68 | void __iomem *primary_dbq_rq_addr; | |
69 | void __iomem *secondary_bdq_rq_addr; | |
08737a3f MY |
70 | |
71 | u8 num_cqs; | |
fc831825 YM |
72 | }; |
73 | ||
74 | struct qed_iscsi_id_params { | |
75 | u8 mac[ETH_ALEN]; | |
76 | u32 ip[4]; | |
77 | u16 port; | |
78 | }; | |
79 | ||
80 | struct qed_iscsi_params_offload { | |
81 | u8 layer_code; | |
82 | dma_addr_t sq_pbl_addr; | |
83 | u32 initial_ack; | |
84 | ||
85 | struct qed_iscsi_id_params src; | |
86 | struct qed_iscsi_id_params dst; | |
87 | u16 vlan_id; | |
88 | u8 tcp_flags; | |
89 | u8 ip_version; | |
90 | u8 default_cq; | |
91 | ||
92 | u8 ka_max_probe_cnt; | |
93 | u8 dup_ack_theshold; | |
94 | u32 rcv_next; | |
95 | u32 snd_una; | |
96 | u32 snd_next; | |
97 | u32 snd_max; | |
98 | u32 snd_wnd; | |
99 | u32 rcv_wnd; | |
100 | u32 snd_wl1; | |
101 | u32 cwnd; | |
102 | u32 ss_thresh; | |
103 | u16 srtt; | |
104 | u16 rtt_var; | |
105 | u32 ts_time; | |
106 | u32 ts_recent; | |
107 | u32 ts_recent_age; | |
108 | u32 total_rt; | |
109 | u32 ka_timeout_delta; | |
110 | u32 rt_timeout_delta; | |
111 | u8 dup_ack_cnt; | |
112 | u8 snd_wnd_probe_cnt; | |
113 | u8 ka_probe_cnt; | |
114 | u8 rt_cnt; | |
115 | u32 flow_label; | |
116 | u32 ka_timeout; | |
117 | u32 ka_interval; | |
118 | u32 max_rt_time; | |
119 | u32 initial_rcv_wnd; | |
120 | u8 ttl; | |
121 | u8 tos_or_tc; | |
122 | u16 remote_port; | |
123 | u16 local_port; | |
124 | u16 mss; | |
125 | u8 snd_wnd_scale; | |
126 | u8 rcv_wnd_scale; | |
127 | u32 ts_ticks_per_second; | |
128 | u16 da_timeout_value; | |
129 | u8 ack_frequency; | |
130 | }; | |
131 | ||
132 | struct qed_iscsi_params_update { | |
133 | u8 update_flag; | |
134 | #define QED_ISCSI_CONN_HD_EN BIT(0) | |
135 | #define QED_ISCSI_CONN_DD_EN BIT(1) | |
136 | #define QED_ISCSI_CONN_INITIAL_R2T BIT(2) | |
137 | #define QED_ISCSI_CONN_IMMEDIATE_DATA BIT(3) | |
138 | ||
139 | u32 max_seq_size; | |
140 | u32 max_recv_pdu_length; | |
141 | u32 max_send_pdu_length; | |
142 | u32 first_seq_length; | |
143 | u32 exp_stat_sn; | |
144 | }; | |
145 | ||
146 | #define MAX_TID_BLOCKS_ISCSI (512) | |
147 | struct qed_iscsi_tid { | |
148 | u32 size; /* In bytes per task */ | |
149 | u32 num_tids_per_block; | |
150 | u8 *blocks[MAX_TID_BLOCKS_ISCSI]; | |
151 | }; | |
152 | ||
153 | struct qed_iscsi_cb_ops { | |
154 | struct qed_common_cb_ops common; | |
155 | }; | |
156 | ||
157 | /** | |
158 | * struct qed_iscsi_ops - qed iSCSI operations. | |
159 | * @common: common operations pointer | |
160 | * @ll2: light L2 operations pointer | |
161 | * @fill_dev_info: fills iSCSI specific information | |
162 | * @param cdev | |
163 | * @param info | |
164 | * @return 0 on sucesss, otherwise error value. | |
165 | * @register_ops: register iscsi operations | |
166 | * @param cdev | |
167 | * @param ops - specified using qed_iscsi_cb_ops | |
168 | * @param cookie - driver private | |
169 | * @start: iscsi in FW | |
170 | * @param cdev | |
171 | * @param tasks - qed will fill information about tasks | |
172 | * return 0 on success, otherwise error value. | |
173 | * @stop: iscsi in FW | |
174 | * @param cdev | |
175 | * return 0 on success, otherwise error value. | |
176 | * @acquire_conn: acquire a new iscsi connection | |
177 | * @param cdev | |
178 | * @param handle - qed will fill handle that should be | |
179 | * used henceforth as identifier of the | |
180 | * connection. | |
181 | * @param p_doorbell - qed will fill the address of the | |
182 | * doorbell. | |
183 | * @return 0 on sucesss, otherwise error value. | |
184 | * @release_conn: release a previously acquired iscsi connection | |
185 | * @param cdev | |
186 | * @param handle - the connection handle. | |
187 | * @return 0 on success, otherwise error value. | |
188 | * @offload_conn: configures an offloaded connection | |
189 | * @param cdev | |
190 | * @param handle - the connection handle. | |
191 | * @param conn_info - the configuration to use for the | |
192 | * offload. | |
193 | * @return 0 on success, otherwise error value. | |
194 | * @update_conn: updates an offloaded connection | |
195 | * @param cdev | |
196 | * @param handle - the connection handle. | |
197 | * @param conn_info - the configuration to use for the | |
198 | * offload. | |
199 | * @return 0 on success, otherwise error value. | |
200 | * @destroy_conn: stops an offloaded connection | |
201 | * @param cdev | |
202 | * @param handle - the connection handle. | |
203 | * @return 0 on success, otherwise error value. | |
204 | * @clear_sq: clear all task in sq | |
205 | * @param cdev | |
206 | * @param handle - the connection handle. | |
207 | * @return 0 on success, otherwise error value. | |
208 | * @get_stats: iSCSI related statistics | |
209 | * @param cdev | |
210 | * @param stats - pointer to struck that would be filled | |
211 | * we stats | |
212 | * @return 0 on success, error otherwise. | |
dc4528e9 MY |
213 | * @change_mac Change MAC of interface |
214 | * @param cdev | |
215 | * @param handle - the connection handle. | |
216 | * @param mac - new MAC to configure. | |
217 | * @return 0 on success, otherwise error value. | |
fc831825 YM |
218 | */ |
219 | struct qed_iscsi_ops { | |
220 | const struct qed_common_ops *common; | |
221 | ||
222 | const struct qed_ll2_ops *ll2; | |
223 | ||
224 | int (*fill_dev_info)(struct qed_dev *cdev, | |
225 | struct qed_dev_iscsi_info *info); | |
226 | ||
227 | void (*register_ops)(struct qed_dev *cdev, | |
228 | struct qed_iscsi_cb_ops *ops, void *cookie); | |
229 | ||
230 | int (*start)(struct qed_dev *cdev, | |
231 | struct qed_iscsi_tid *tasks, | |
232 | void *event_context, iscsi_event_cb_t async_event_cb); | |
233 | ||
234 | int (*stop)(struct qed_dev *cdev); | |
235 | ||
236 | int (*acquire_conn)(struct qed_dev *cdev, | |
237 | u32 *handle, | |
238 | u32 *fw_cid, void __iomem **p_doorbell); | |
239 | ||
240 | int (*release_conn)(struct qed_dev *cdev, u32 handle); | |
241 | ||
242 | int (*offload_conn)(struct qed_dev *cdev, | |
243 | u32 handle, | |
244 | struct qed_iscsi_params_offload *conn_info); | |
245 | ||
246 | int (*update_conn)(struct qed_dev *cdev, | |
247 | u32 handle, | |
248 | struct qed_iscsi_params_update *conn_info); | |
249 | ||
250 | int (*destroy_conn)(struct qed_dev *cdev, u32 handle, u8 abrt_conn); | |
251 | ||
252 | int (*clear_sq)(struct qed_dev *cdev, u32 handle); | |
253 | ||
254 | int (*get_stats)(struct qed_dev *cdev, | |
255 | struct qed_iscsi_stats *stats); | |
dc4528e9 MY |
256 | |
257 | int (*change_mac)(struct qed_dev *cdev, u32 handle, const u8 *mac); | |
fc831825 YM |
258 | }; |
259 | ||
260 | const struct qed_iscsi_ops *qed_get_iscsi_ops(void); | |
261 | void qed_put_iscsi_ops(void); | |
262 | #endif |