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Yuval Mintz1d6cff42016-12-01 00:21:07 -08001/* QLogic qed NIC Driver
Mintz, Yuvale8f1cb52017-01-01 13:57:00 +02002 * Copyright (c) 2015-2017 QLogic Corporation
Yuval Mintz1d6cff42016-12-01 00:21:07 -08003 *
Mintz, Yuvale8f1cb52017-01-01 13:57:00 +02004 * 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.
Yuval Mintz1d6cff42016-12-01 00:21:07 -080031 */
32
33#ifndef _QED_OOO_H
34#define _QED_OOO_H
35#include <linux/types.h>
36#include <linux/list.h>
37#include <linux/slab.h>
38#include "qed.h"
39
40#define QED_MAX_NUM_ISLES 256
41#define QED_MAX_NUM_OOO_HISTORY_ENTRIES 512
42
43#define QED_OOO_LEFT_BUF 0
44#define QED_OOO_RIGHT_BUF 1
45
46struct qed_ooo_buffer {
47 struct list_head list_entry;
48 void *rx_buffer_virt_addr;
49 dma_addr_t rx_buffer_phys_addr;
50 u32 rx_buffer_size;
51 u16 packet_length;
52 u16 parse_flags;
53 u16 vlan;
54 u8 placement_offset;
55};
56
57struct qed_ooo_isle {
58 struct list_head list_entry;
59 struct list_head buffers_list;
60};
61
62struct qed_ooo_archipelago {
63 struct list_head list_entry;
64 struct list_head isles_list;
65 u32 cid;
66};
67
68struct qed_ooo_history {
69 struct ooo_opaque *p_cqes;
70 u32 head_idx;
71 u32 num_of_cqes;
72};
73
74struct qed_ooo_info {
75 struct list_head free_buffers_list;
76 struct list_head ready_buffers_list;
77 struct list_head free_isles_list;
78 struct list_head free_archipelagos_list;
79 struct list_head archipelagos_list;
80 struct qed_ooo_archipelago *p_archipelagos_mem;
81 struct qed_ooo_isle *p_isles_mem;
82 struct qed_ooo_history ooo_history;
83 u32 cur_isles_number;
84 u32 max_isles_number;
85 u32 gen_isles_number;
86};
87
88#if IS_ENABLED(CONFIG_QED_ISCSI)
89void qed_ooo_save_history_entry(struct qed_hwfn *p_hwfn,
90 struct qed_ooo_info *p_ooo_info,
91 struct ooo_opaque *p_cqe);
92
93struct qed_ooo_info *qed_ooo_alloc(struct qed_hwfn *p_hwfn);
94
95void qed_ooo_release_connection_isles(struct qed_hwfn *p_hwfn,
96 struct qed_ooo_info *p_ooo_info,
97 u32 cid);
98
99void qed_ooo_release_all_isles(struct qed_hwfn *p_hwfn,
100 struct qed_ooo_info *p_ooo_info);
101
102void qed_ooo_setup(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info);
103
104void qed_ooo_free(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info);
105
106void qed_ooo_put_free_buffer(struct qed_hwfn *p_hwfn,
107 struct qed_ooo_info *p_ooo_info,
108 struct qed_ooo_buffer *p_buffer);
109
110struct qed_ooo_buffer *
111qed_ooo_get_free_buffer(struct qed_hwfn *p_hwfn,
112 struct qed_ooo_info *p_ooo_info);
113
114void qed_ooo_put_ready_buffer(struct qed_hwfn *p_hwfn,
115 struct qed_ooo_info *p_ooo_info,
116 struct qed_ooo_buffer *p_buffer, u8 on_tail);
117
118struct qed_ooo_buffer *
119qed_ooo_get_ready_buffer(struct qed_hwfn *p_hwfn,
120 struct qed_ooo_info *p_ooo_info);
121
122void qed_ooo_delete_isles(struct qed_hwfn *p_hwfn,
123 struct qed_ooo_info *p_ooo_info,
124 u32 cid, u8 drop_isle, u8 drop_size);
125
126void qed_ooo_add_new_isle(struct qed_hwfn *p_hwfn,
127 struct qed_ooo_info *p_ooo_info,
128 u32 cid,
129 u8 ooo_isle, struct qed_ooo_buffer *p_buffer);
130
131void qed_ooo_add_new_buffer(struct qed_hwfn *p_hwfn,
132 struct qed_ooo_info *p_ooo_info,
133 u32 cid,
134 u8 ooo_isle,
135 struct qed_ooo_buffer *p_buffer, u8 buffer_side);
136
137void qed_ooo_join_isles(struct qed_hwfn *p_hwfn,
138 struct qed_ooo_info *p_ooo_info, u32 cid,
139 u8 left_isle);
140#else /* IS_ENABLED(CONFIG_QED_ISCSI) */
141static inline void qed_ooo_save_history_entry(struct qed_hwfn *p_hwfn,
142 struct qed_ooo_info *p_ooo_info,
143 struct ooo_opaque *p_cqe) {}
144
145static inline struct qed_ooo_info *qed_ooo_alloc(
146 struct qed_hwfn *p_hwfn) { return NULL; }
147
148static inline void
149qed_ooo_release_connection_isles(struct qed_hwfn *p_hwfn,
150 struct qed_ooo_info *p_ooo_info,
151 u32 cid) {}
152
153static inline void qed_ooo_release_all_isles(struct qed_hwfn *p_hwfn,
154 struct qed_ooo_info *p_ooo_info)
155 {}
156
157static inline void qed_ooo_setup(struct qed_hwfn *p_hwfn,
158 struct qed_ooo_info *p_ooo_info) {}
159
160static inline void qed_ooo_free(struct qed_hwfn *p_hwfn,
161 struct qed_ooo_info *p_ooo_info) {}
162
163static inline void qed_ooo_put_free_buffer(struct qed_hwfn *p_hwfn,
164 struct qed_ooo_info *p_ooo_info,
165 struct qed_ooo_buffer *p_buffer) {}
166
167static inline struct qed_ooo_buffer *
168qed_ooo_get_free_buffer(struct qed_hwfn *p_hwfn,
169 struct qed_ooo_info *p_ooo_info) { return NULL; }
170
171static inline void qed_ooo_put_ready_buffer(struct qed_hwfn *p_hwfn,
172 struct qed_ooo_info *p_ooo_info,
173 struct qed_ooo_buffer *p_buffer,
174 u8 on_tail) {}
175
176static inline struct qed_ooo_buffer *
177qed_ooo_get_ready_buffer(struct qed_hwfn *p_hwfn,
178 struct qed_ooo_info *p_ooo_info) { return NULL; }
179
180static inline void qed_ooo_delete_isles(struct qed_hwfn *p_hwfn,
181 struct qed_ooo_info *p_ooo_info,
182 u32 cid, u8 drop_isle, u8 drop_size) {}
183
184static inline void qed_ooo_add_new_isle(struct qed_hwfn *p_hwfn,
185 struct qed_ooo_info *p_ooo_info,
186 u32 cid, u8 ooo_isle,
187 struct qed_ooo_buffer *p_buffer) {}
188
189static inline void qed_ooo_add_new_buffer(struct qed_hwfn *p_hwfn,
190 struct qed_ooo_info *p_ooo_info,
191 u32 cid, u8 ooo_isle,
192 struct qed_ooo_buffer *p_buffer,
193 u8 buffer_side) {}
194
195static inline void qed_ooo_join_isles(struct qed_hwfn *p_hwfn,
196 struct qed_ooo_info *p_ooo_info, u32 cid,
197 u8 left_isle) {}
198#endif /* IS_ENABLED(CONFIG_QED_ISCSI) */
199
200#endif