1 /* QLogic qed NIC Driver
2  * Copyright (c) 2015-2017  QLogic Corporation
3  *
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.
31  */
32 
33 #ifndef _QED_CXT_H
34 #define _QED_CXT_H
35 
36 #include <linux/types.h>
37 #include <linux/slab.h>
38 #include <linux/qed/qed_if.h>
39 #include "qed_hsi.h"
40 #include "qed.h"
41 
42 struct qed_cxt_info {
43 	void			*p_cxt;
44 	u32			iid;
45 	enum protocol_type	type;
46 };
47 
48 #define MAX_TID_BLOCKS                  512
49 struct qed_tid_mem {
50 	u32 tid_size;
51 	u32 num_tids_per_block;
52 	u32 waste;
53 	u8 *blocks[MAX_TID_BLOCKS];	/* 4K */
54 };
55 
56 /**
57  * @brief qed_cxt_acquire - Acquire a new cid of a specific protocol type
58  *
59  * @param p_hwfn
60  * @param type
61  * @param p_cid
62  *
63  * @return int
64  */
65 int qed_cxt_acquire_cid(struct qed_hwfn *p_hwfn,
66 			enum protocol_type type,
67 			u32 *p_cid);
68 
69 /**
70  * @brief qedo_cid_get_cxt_info - Returns the context info for a specific cid
71  *
72  *
73  * @param p_hwfn
74  * @param p_info in/out
75  *
76  * @return int
77  */
78 int qed_cxt_get_cid_info(struct qed_hwfn *p_hwfn,
79 			 struct qed_cxt_info *p_info);
80 
81 /**
82  * @brief qed_cxt_get_tid_mem_info
83  *
84  * @param p_hwfn
85  * @param p_info
86  *
87  * @return int
88  */
89 int qed_cxt_get_tid_mem_info(struct qed_hwfn *p_hwfn,
90 			     struct qed_tid_mem *p_info);
91 
92 #define QED_CXT_ISCSI_TID_SEG	PROTOCOLID_ISCSI
93 #define QED_CXT_ROCE_TID_SEG	PROTOCOLID_ROCE
94 #define QED_CXT_FCOE_TID_SEG	PROTOCOLID_FCOE
95 enum qed_cxt_elem_type {
96 	QED_ELEM_CXT,
97 	QED_ELEM_SRQ,
98 	QED_ELEM_TASK
99 };
100 
101 u32 qed_cxt_get_proto_cid_count(struct qed_hwfn *p_hwfn,
102 				enum protocol_type type, u32 *vf_cid);
103 
104 /**
105  * @brief qed_cxt_set_pf_params - Set the PF params for cxt init
106  *
107  * @param p_hwfn
108  *
109  * @return int
110  */
111 int qed_cxt_set_pf_params(struct qed_hwfn *p_hwfn);
112 
113 /**
114  * @brief qed_cxt_cfg_ilt_compute - compute ILT init parameters
115  *
116  * @param p_hwfn
117  *
118  * @return int
119  */
120 int qed_cxt_cfg_ilt_compute(struct qed_hwfn *p_hwfn);
121 
122 /**
123  * @brief qed_cxt_mngr_alloc - Allocate and init the context manager struct
124  *
125  * @param p_hwfn
126  *
127  * @return int
128  */
129 int qed_cxt_mngr_alloc(struct qed_hwfn *p_hwfn);
130 
131 /**
132  * @brief qed_cxt_mngr_free
133  *
134  * @param p_hwfn
135  */
136 void qed_cxt_mngr_free(struct qed_hwfn *p_hwfn);
137 
138 /**
139  * @brief qed_cxt_tables_alloc - Allocate ILT shadow, Searcher T2, acquired map
140  *
141  * @param p_hwfn
142  *
143  * @return int
144  */
145 int qed_cxt_tables_alloc(struct qed_hwfn *p_hwfn);
146 
147 /**
148  * @brief qed_cxt_mngr_setup - Reset the acquired CIDs
149  *
150  * @param p_hwfn
151  */
152 void qed_cxt_mngr_setup(struct qed_hwfn *p_hwfn);
153 
154 /**
155  * @brief qed_cxt_hw_init_common - Initailze ILT and DQ, common phase, per path.
156  *
157  *
158  *
159  * @param p_hwfn
160  */
161 void qed_cxt_hw_init_common(struct qed_hwfn *p_hwfn);
162 
163 /**
164  * @brief qed_cxt_hw_init_pf - Initailze ILT and DQ, PF phase, per path.
165  *
166  *
167  *
168  * @param p_hwfn
169  */
170 void qed_cxt_hw_init_pf(struct qed_hwfn *p_hwfn);
171 
172 /**
173  * @brief qed_qm_init_pf - Initailze the QM PF phase, per path
174  *
175  * @param p_hwfn
176  */
177 
178 void qed_qm_init_pf(struct qed_hwfn *p_hwfn);
179 
180 /**
181  * @brief Reconfigures QM pf on the fly
182  *
183  * @param p_hwfn
184  * @param p_ptt
185  *
186  * @return int
187  */
188 int qed_qm_reconf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
189 
190 /**
191  * @brief qed_cxt_release - Release a cid
192  *
193  * @param p_hwfn
194  * @param cid
195  */
196 void qed_cxt_release_cid(struct qed_hwfn *p_hwfn,
197 			 u32 cid);
198 int qed_cxt_dynamic_ilt_alloc(struct qed_hwfn *p_hwfn,
199 			      enum qed_cxt_elem_type elem_type, u32 iid);
200 u32 qed_cxt_get_proto_tid_count(struct qed_hwfn *p_hwfn,
201 				enum protocol_type type);
202 u32 qed_cxt_get_proto_cid_start(struct qed_hwfn *p_hwfn,
203 				enum protocol_type type);
204 int qed_cxt_free_proto_ilt(struct qed_hwfn *p_hwfn, enum protocol_type proto);
205 
206 #define QED_CTX_WORKING_MEM 0
207 #define QED_CTX_FL_MEM 1
208 int qed_cxt_get_task_ctx(struct qed_hwfn *p_hwfn,
209 			 u32 tid, u8 ctx_type, void **task_ctx);
210 #endif
211