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 qedo_cid_get_cxt_info - Returns the context info for a specific cid
58  *
59  *
60  * @param p_hwfn
61  * @param p_info in/out
62  *
63  * @return int
64  */
65 int qed_cxt_get_cid_info(struct qed_hwfn *p_hwfn,
66 			 struct qed_cxt_info *p_info);
67 
68 /**
69  * @brief qed_cxt_get_tid_mem_info
70  *
71  * @param p_hwfn
72  * @param p_info
73  *
74  * @return int
75  */
76 int qed_cxt_get_tid_mem_info(struct qed_hwfn *p_hwfn,
77 			     struct qed_tid_mem *p_info);
78 
79 #define QED_CXT_ISCSI_TID_SEG	PROTOCOLID_ISCSI
80 #define QED_CXT_ROCE_TID_SEG	PROTOCOLID_ROCE
81 #define QED_CXT_FCOE_TID_SEG	PROTOCOLID_FCOE
82 enum qed_cxt_elem_type {
83 	QED_ELEM_CXT,
84 	QED_ELEM_SRQ,
85 	QED_ELEM_TASK
86 };
87 
88 u32 qed_cxt_get_proto_cid_count(struct qed_hwfn *p_hwfn,
89 				enum protocol_type type, u32 *vf_cid);
90 
91 /**
92  * @brief qed_cxt_set_pf_params - Set the PF params for cxt init
93  *
94  * @param p_hwfn
95  * @param rdma_tasks - requested maximum
96  * @return int
97  */
98 int qed_cxt_set_pf_params(struct qed_hwfn *p_hwfn, u32 rdma_tasks);
99 
100 /**
101  * @brief qed_cxt_cfg_ilt_compute - compute ILT init parameters
102  *
103  * @param p_hwfn
104  * @param last_line
105  *
106  * @return int
107  */
108 int qed_cxt_cfg_ilt_compute(struct qed_hwfn *p_hwfn, u32 *last_line);
109 
110 /**
111  * @brief qed_cxt_cfg_ilt_compute_excess - how many lines can be decreased
112  *
113  * @param p_hwfn
114  * @param used_lines
115  */
116 u32 qed_cxt_cfg_ilt_compute_excess(struct qed_hwfn *p_hwfn, u32 used_lines);
117 
118 /**
119  * @brief qed_cxt_mngr_alloc - Allocate and init the context manager struct
120  *
121  * @param p_hwfn
122  *
123  * @return int
124  */
125 int qed_cxt_mngr_alloc(struct qed_hwfn *p_hwfn);
126 
127 /**
128  * @brief qed_cxt_mngr_free
129  *
130  * @param p_hwfn
131  */
132 void qed_cxt_mngr_free(struct qed_hwfn *p_hwfn);
133 
134 /**
135  * @brief qed_cxt_tables_alloc - Allocate ILT shadow, Searcher T2, acquired map
136  *
137  * @param p_hwfn
138  *
139  * @return int
140  */
141 int qed_cxt_tables_alloc(struct qed_hwfn *p_hwfn);
142 
143 /**
144  * @brief qed_cxt_mngr_setup - Reset the acquired CIDs
145  *
146  * @param p_hwfn
147  */
148 void qed_cxt_mngr_setup(struct qed_hwfn *p_hwfn);
149 
150 /**
151  * @brief qed_cxt_hw_init_common - Initailze ILT and DQ, common phase, per path.
152  *
153  *
154  *
155  * @param p_hwfn
156  */
157 void qed_cxt_hw_init_common(struct qed_hwfn *p_hwfn);
158 
159 /**
160  * @brief qed_cxt_hw_init_pf - Initailze ILT and DQ, PF phase, per path.
161  *
162  * @param p_hwfn
163  * @param p_ptt
164  */
165 void qed_cxt_hw_init_pf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
166 
167 /**
168  * @brief qed_qm_init_pf - Initailze the QM PF phase, per path
169  *
170  * @param p_hwfn
171  * @param p_ptt
172  * @param is_pf_loading
173  */
174 void qed_qm_init_pf(struct qed_hwfn *p_hwfn,
175 		    struct qed_ptt *p_ptt, bool is_pf_loading);
176 
177 /**
178  * @brief Reconfigures QM pf on the fly
179  *
180  * @param p_hwfn
181  * @param p_ptt
182  *
183  * @return int
184  */
185 int qed_qm_reconf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
186 
187 #define QED_CXT_PF_CID (0xff)
188 
189 /**
190  * @brief qed_cxt_release - Release a cid
191  *
192  * @param p_hwfn
193  * @param cid
194  */
195 void qed_cxt_release_cid(struct qed_hwfn *p_hwfn, u32 cid);
196 
197 /**
198  * @brief qed_cxt_release - Release a cid belonging to a vf-queue
199  *
200  * @param p_hwfn
201  * @param cid
202  * @param vfid - engine relative index. QED_CXT_PF_CID if belongs to PF
203  */
204 void _qed_cxt_release_cid(struct qed_hwfn *p_hwfn, u32 cid, u8 vfid);
205 
206 /**
207  * @brief qed_cxt_acquire - Acquire a new cid of a specific protocol type
208  *
209  * @param p_hwfn
210  * @param type
211  * @param p_cid
212  *
213  * @return int
214  */
215 int qed_cxt_acquire_cid(struct qed_hwfn *p_hwfn,
216 			enum protocol_type type, u32 *p_cid);
217 
218 /**
219  * @brief _qed_cxt_acquire - Acquire a new cid of a specific protocol type
220  *                           for a vf-queue
221  *
222  * @param p_hwfn
223  * @param type
224  * @param p_cid
225  * @param vfid - engine relative index. QED_CXT_PF_CID if belongs to PF
226  *
227  * @return int
228  */
229 int _qed_cxt_acquire_cid(struct qed_hwfn *p_hwfn,
230 			 enum protocol_type type, u32 *p_cid, u8 vfid);
231 
232 int qed_cxt_dynamic_ilt_alloc(struct qed_hwfn *p_hwfn,
233 			      enum qed_cxt_elem_type elem_type, u32 iid);
234 u32 qed_cxt_get_proto_tid_count(struct qed_hwfn *p_hwfn,
235 				enum protocol_type type);
236 u32 qed_cxt_get_proto_cid_start(struct qed_hwfn *p_hwfn,
237 				enum protocol_type type);
238 u32 qed_cxt_get_srq_count(struct qed_hwfn *p_hwfn);
239 int qed_cxt_free_proto_ilt(struct qed_hwfn *p_hwfn, enum protocol_type proto);
240 
241 #define QED_CTX_WORKING_MEM 0
242 #define QED_CTX_FL_MEM 1
243 int qed_cxt_get_task_ctx(struct qed_hwfn *p_hwfn,
244 			 u32 tid, u8 ctx_type, void **task_ctx);
245 #endif
246