[linux-2.6-block.git] / include / linux / qed / qed_iscsi_if.h

/* QLogic qed NIC Driver
 * Copyright (c) 2015-2017  QLogic Corporation
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed 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, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and /or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef _QED_ISCSI_IF_H
#define _QED_ISCSI_IF_H
#include <linux/types.h>
#include <linux/qed/qed_if.h>

typedef int (*iscsi_event_cb_t) (void *context,
				 u8 fw_event_code, void *fw_handle);
struct qed_iscsi_stats {
	u64 iscsi_rx_bytes_cnt;
	u64 iscsi_rx_packet_cnt;
	u64 iscsi_rx_new_ooo_isle_events_cnt;
	u32 iscsi_cmdq_threshold_cnt;
	u32 iscsi_rq_threshold_cnt;
	u32 iscsi_immq_threshold_cnt;

	u64 iscsi_rx_dropped_pdus_task_not_valid;

	u64 iscsi_rx_data_pdu_cnt;
	u64 iscsi_rx_r2t_pdu_cnt;
	u64 iscsi_rx_total_pdu_cnt;

	u64 iscsi_tx_go_to_slow_start_event_cnt;
	u64 iscsi_tx_fast_retransmit_event_cnt;

	u64 iscsi_tx_data_pdu_cnt;
	u64 iscsi_tx_r2t_pdu_cnt;
	u64 iscsi_tx_total_pdu_cnt;

	u64 iscsi_tx_bytes_cnt;
	u64 iscsi_tx_packet_cnt;
};

struct qed_dev_iscsi_info {
	struct qed_dev_info common;

	void __iomem *primary_dbq_rq_addr;
	void __iomem *secondary_bdq_rq_addr;
};

struct qed_iscsi_id_params {
	u8 mac[ETH_ALEN];
	u32 ip[4];
	u16 port;
};

struct qed_iscsi_params_offload {
	u8 layer_code;
	dma_addr_t sq_pbl_addr;
	u32 initial_ack;

	struct qed_iscsi_id_params src;
	struct qed_iscsi_id_params dst;
	u16 vlan_id;
	u8 tcp_flags;
	u8 ip_version;
	u8 default_cq;

	u8 ka_max_probe_cnt;
	u8 dup_ack_theshold;
	u32 rcv_next;
	u32 snd_una;
	u32 snd_next;
	u32 snd_max;
	u32 snd_wnd;
	u32 rcv_wnd;
	u32 snd_wl1;
	u32 cwnd;
	u32 ss_thresh;
	u16 srtt;
	u16 rtt_var;
	u32 ts_time;
	u32 ts_recent;
	u32 ts_recent_age;
	u32 total_rt;
	u32 ka_timeout_delta;
	u32 rt_timeout_delta;
	u8 dup_ack_cnt;
	u8 snd_wnd_probe_cnt;
	u8 ka_probe_cnt;
	u8 rt_cnt;
	u32 flow_label;
	u32 ka_timeout;
	u32 ka_interval;
	u32 max_rt_time;
	u32 initial_rcv_wnd;
	u8 ttl;
	u8 tos_or_tc;
	u16 remote_port;
	u16 local_port;
	u16 mss;
	u8 snd_wnd_scale;
	u8 rcv_wnd_scale;
	u32 ts_ticks_per_second;
	u16 da_timeout_value;
	u8 ack_frequency;
};

struct qed_iscsi_params_update {
	u8 update_flag;
#define QED_ISCSI_CONN_HD_EN            BIT(0)
#define QED_ISCSI_CONN_DD_EN            BIT(1)
#define QED_ISCSI_CONN_INITIAL_R2T      BIT(2)
#define QED_ISCSI_CONN_IMMEDIATE_DATA   BIT(3)

	u32 max_seq_size;
	u32 max_recv_pdu_length;
	u32 max_send_pdu_length;
	u32 first_seq_length;
	u32 exp_stat_sn;
};

#define MAX_TID_BLOCKS_ISCSI (512)
struct qed_iscsi_tid {
	u32 size;		/* In bytes per task */
	u32 num_tids_per_block;
	u8 *blocks[MAX_TID_BLOCKS_ISCSI];
};

struct qed_iscsi_cb_ops {
	struct qed_common_cb_ops common;
};

/**
 * struct qed_iscsi_ops - qed iSCSI operations.
 * @common:		common operations pointer
 * @ll2:		light L2 operations pointer
 * @fill_dev_info:	fills iSCSI specific information
 *			@param cdev
 *			@param info
 *			@return 0 on sucesss, otherwise error value.
 * @register_ops:	register iscsi operations
 *			@param cdev
 *			@param ops - specified using qed_iscsi_cb_ops
 *			@param cookie - driver private
 * @start:		iscsi in FW
 *			@param cdev
 *			@param tasks - qed will fill information about tasks
 *			return 0 on success, otherwise error value.
 * @stop:		iscsi in FW
 *			@param cdev
 *			return 0 on success, otherwise error value.
 * @acquire_conn:	acquire a new iscsi connection
 *			@param cdev
 *			@param handle - qed will fill handle that should be
 *				used henceforth as identifier of the
 *				connection.
 *			@param p_doorbell - qed will fill the address of the
 *				doorbell.
 *			@return 0 on sucesss, otherwise error value.
 * @release_conn:	release a previously acquired iscsi connection
 *			@param cdev
 *			@param handle - the connection handle.
 *			@return 0 on success, otherwise error value.
 * @offload_conn:	configures an offloaded connection
 *			@param cdev
 *			@param handle - the connection handle.
 *			@param conn_info - the configuration to use for the
 *				offload.
 *			@return 0 on success, otherwise error value.
 * @update_conn:	updates an offloaded connection
 *			@param cdev
 *			@param handle - the connection handle.
 *			@param conn_info - the configuration to use for the
 *				offload.
 *			@return 0 on success, otherwise error value.
 * @destroy_conn:	stops an offloaded connection
 *			@param cdev
 *			@param handle - the connection handle.
 *			@return 0 on success, otherwise error value.
 * @clear_sq:		clear all task in sq
 *			@param cdev
 *			@param handle - the connection handle.
 *			@return 0 on success, otherwise error value.
 * @get_stats:		iSCSI related statistics
 *			@param cdev
 *			@param stats - pointer to struck that would be filled
 *				we stats
 *			@return 0 on success, error otherwise.
 */
struct qed_iscsi_ops {
	const struct qed_common_ops *common;

	const struct qed_ll2_ops *ll2;

	int (*fill_dev_info)(struct qed_dev *cdev,
			     struct qed_dev_iscsi_info *info);

	void (*register_ops)(struct qed_dev *cdev,
			     struct qed_iscsi_cb_ops *ops, void *cookie);

	int (*start)(struct qed_dev *cdev,
		     struct qed_iscsi_tid *tasks,
		     void *event_context, iscsi_event_cb_t async_event_cb);

	int (*stop)(struct qed_dev *cdev);

	int (*acquire_conn)(struct qed_dev *cdev,
			    u32 *handle,
			    u32 *fw_cid, void __iomem **p_doorbell);

	int (*release_conn)(struct qed_dev *cdev, u32 handle);

	int (*offload_conn)(struct qed_dev *cdev,
			    u32 handle,
			    struct qed_iscsi_params_offload *conn_info);

	int (*update_conn)(struct qed_dev *cdev,
			   u32 handle,
			   struct qed_iscsi_params_update *conn_info);

	int (*destroy_conn)(struct qed_dev *cdev, u32 handle, u8 abrt_conn);

	int (*clear_sq)(struct qed_dev *cdev, u32 handle);

	int (*get_stats)(struct qed_dev *cdev,
			 struct qed_iscsi_stats *stats);
};

const struct qed_iscsi_ops *qed_get_iscsi_ops(void);
void qed_put_iscsi_ops(void);
#endif
Commit	Line	Data
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;
	70	};
	71
	72	struct qed_iscsi_id_params {
	73	u8 mac[ETH_ALEN];
	74	u32 ip[4];
	75	u16 port;
	76	};
	77
	78	struct qed_iscsi_params_offload {
	79	u8 layer_code;
	80	dma_addr_t sq_pbl_addr;
	81	u32 initial_ack;
	82
	83	struct qed_iscsi_id_params src;
	84	struct qed_iscsi_id_params dst;
	85	u16 vlan_id;
	86	u8 tcp_flags;
	87	u8 ip_version;
	88	u8 default_cq;
	89
	90	u8 ka_max_probe_cnt;
	91	u8 dup_ack_theshold;
	92	u32 rcv_next;
	93	u32 snd_una;
	94	u32 snd_next;
95	u32 snd_max;
96	u32 snd_wnd;
97	u32 rcv_wnd;
98	u32 snd_wl1;
99	u32 cwnd;
100	u32 ss_thresh;
101	u16 srtt;
102	u16 rtt_var;
103	u32 ts_time;
104	u32 ts_recent;
105	u32 ts_recent_age;
106	u32 total_rt;
107	u32 ka_timeout_delta;
108	u32 rt_timeout_delta;
109	u8 dup_ack_cnt;
110	u8 snd_wnd_probe_cnt;
111	u8 ka_probe_cnt;
112	u8 rt_cnt;
113	u32 flow_label;
114	u32 ka_timeout;
115	u32 ka_interval;
116	u32 max_rt_time;
117	u32 initial_rcv_wnd;
118	u8 ttl;
119	u8 tos_or_tc;
120	u16 remote_port;
121	u16 local_port;
122	u16 mss;
123	u8 snd_wnd_scale;
124	u8 rcv_wnd_scale;
125	u32 ts_ticks_per_second;
126	u16 da_timeout_value;
127	u8 ack_frequency;
128	};
129
130	struct qed_iscsi_params_update {
131	u8 update_flag;
132	#define QED_ISCSI_CONN_HD_EN BIT(0)
133	#define QED_ISCSI_CONN_DD_EN BIT(1)
134	#define QED_ISCSI_CONN_INITIAL_R2T BIT(2)
135	#define QED_ISCSI_CONN_IMMEDIATE_DATA BIT(3)
136
137	u32 max_seq_size;
138	u32 max_recv_pdu_length;
139	u32 max_send_pdu_length;
140	u32 first_seq_length;
141	u32 exp_stat_sn;
142	};
143
144	#define MAX_TID_BLOCKS_ISCSI (512)
145	struct qed_iscsi_tid {
146	u32 size; /* In bytes per task */
147	u32 num_tids_per_block;
148	u8 *blocks[MAX_TID_BLOCKS_ISCSI];
149	};
150
151	struct qed_iscsi_cb_ops {
152	struct qed_common_cb_ops common;
153	};
154
155	/**
156	* struct qed_iscsi_ops - qed iSCSI operations.
157	* @common: common operations pointer
158	* @ll2: light L2 operations pointer
159	* @fill_dev_info: fills iSCSI specific information
160	* @param cdev
161	* @param info
162	* @return 0 on sucesss, otherwise error value.
163	* @register_ops: register iscsi operations
164	* @param cdev
165	* @param ops - specified using qed_iscsi_cb_ops
166	* @param cookie - driver private
167	* @start: iscsi in FW
168	* @param cdev
169	* @param tasks - qed will fill information about tasks
170	* return 0 on success, otherwise error value.
171	* @stop: iscsi in FW
172	* @param cdev
173	* return 0 on success, otherwise error value.
174	* @acquire_conn: acquire a new iscsi connection
175	* @param cdev
176	* @param handle - qed will fill handle that should be
177	* used henceforth as identifier of the
178	* connection.
179	* @param p_doorbell - qed will fill the address of the
180	* doorbell.
181	* @return 0 on sucesss, otherwise error value.
182	* @release_conn: release a previously acquired iscsi connection
183	* @param cdev
184	* @param handle - the connection handle.
185	* @return 0 on success, otherwise error value.
186	* @offload_conn: configures an offloaded connection
187	* @param cdev
188	* @param handle - the connection handle.
189	* @param conn_info - the configuration to use for the
190	* offload.
191	* @return 0 on success, otherwise error value.
192	* @update_conn: updates an offloaded connection
193	* @param cdev
194	* @param handle - the connection handle.
195	* @param conn_info - the configuration to use for the
196	* offload.
197	* @return 0 on success, otherwise error value.
198	* @destroy_conn: stops an offloaded connection
199	* @param cdev
200	* @param handle - the connection handle.
201	* @return 0 on success, otherwise error value.
202	* @clear_sq: clear all task in sq
203	* @param cdev
204	* @param handle - the connection handle.
205	* @return 0 on success, otherwise error value.
206	* @get_stats: iSCSI related statistics
207	* @param cdev
208	* @param stats - pointer to struck that would be filled
209	* we stats
210	* @return 0 on success, error otherwise.
211	*/
212	struct qed_iscsi_ops {
213	const struct qed_common_ops *common;
214
215	const struct qed_ll2_ops *ll2;
216
217	int (fill_dev_info)(struct qed_dev cdev,
218	struct qed_dev_iscsi_info *info);
219
220	void (register_ops)(struct qed_dev cdev,
221	struct qed_iscsi_cb_ops ops, void cookie);
222
223	int (start)(struct qed_dev cdev,
224	struct qed_iscsi_tid *tasks,
225	void *event_context, iscsi_event_cb_t async_event_cb);
226
227	int (stop)(struct qed_dev cdev);
228
229	int (acquire_conn)(struct qed_dev cdev,
230	u32 *handle,
231	u32 fw_cid, void __iomem *p_doorbell);
232
233	int (release_conn)(struct qed_dev cdev, u32 handle);
234
235	int (offload_conn)(struct qed_dev cdev,
236	u32 handle,
237	struct qed_iscsi_params_offload *conn_info);
238
239	int (update_conn)(struct qed_dev cdev,
240	u32 handle,
241	struct qed_iscsi_params_update *conn_info);
242
243	int (destroy_conn)(struct qed_dev cdev, u32 handle, u8 abrt_conn);
244
245	int (clear_sq)(struct qed_dev cdev, u32 handle);
246
247	int (get_stats)(struct qed_dev cdev,
248	struct qed_iscsi_stats *stats);
249	};
250
251	const struct qed_iscsi_ops *qed_get_iscsi_ops(void);
252	void qed_put_iscsi_ops(void);
253	#endif