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