1 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
2 /* QLogic qed NIC Driver
3 * Copyright (c) 2015-2017 QLogic Corporation
4 * Copyright (c) 2019-2020 Marvell International Ltd.
5 */
6
7 #ifndef _QED_OOO_H
8 #define _QED_OOO_H
9 #include <linux/types.h>
10 #include <linux/list.h>
11 #include <linux/slab.h>
12 #include "qed.h"
13
14 #define QED_MAX_NUM_ISLES 256
15 #define QED_MAX_NUM_OOO_HISTORY_ENTRIES 512
16
17 #define QED_OOO_LEFT_BUF 0
18 #define QED_OOO_RIGHT_BUF 1
19
20 struct qed_ooo_buffer {
21 struct list_head list_entry;
22 void *rx_buffer_virt_addr;
23 dma_addr_t rx_buffer_phys_addr;
24 u32 rx_buffer_size;
25 u16 packet_length;
26 u16 parse_flags;
27 u16 vlan;
28 u8 placement_offset;
29 };
30
31 struct qed_ooo_isle {
32 struct list_head list_entry;
33 struct list_head buffers_list;
34 };
35
36 struct qed_ooo_archipelago {
37 struct list_head isles_list;
38 };
39
40 struct qed_ooo_history {
41 struct ooo_opaque *p_cqes;
42 u32 head_idx;
43 u32 num_of_cqes;
44 };
45
46 struct qed_ooo_info {
47 struct list_head free_buffers_list;
48 struct list_head ready_buffers_list;
49 struct list_head free_isles_list;
50 struct qed_ooo_archipelago *p_archipelagos_mem;
51 struct qed_ooo_isle *p_isles_mem;
52 struct qed_ooo_history ooo_history;
53 u32 cur_isles_number;
54 u32 max_isles_number;
55 u32 gen_isles_number;
56 u16 max_num_archipelagos;
57 u16 cid_base;
58 };
59
60 #if IS_ENABLED(CONFIG_QED_OOO)
61 void qed_ooo_save_history_entry(struct qed_hwfn *p_hwfn,
62 struct qed_ooo_info *p_ooo_info,
63 struct ooo_opaque *p_cqe);
64
65 int qed_ooo_alloc(struct qed_hwfn *p_hwfn);
66
67 void qed_ooo_setup(struct qed_hwfn *p_hwfn);
68
69 void qed_ooo_free(struct qed_hwfn *p_hwfn);
70
71 void qed_ooo_release_connection_isles(struct qed_hwfn *p_hwfn,
72 struct qed_ooo_info *p_ooo_info,
73 u32 cid);
74
75 void qed_ooo_release_all_isles(struct qed_hwfn *p_hwfn,
76 struct qed_ooo_info *p_ooo_info);
77
78 void qed_ooo_put_free_buffer(struct qed_hwfn *p_hwfn,
79 struct qed_ooo_info *p_ooo_info,
80 struct qed_ooo_buffer *p_buffer);
81
82 struct qed_ooo_buffer *
83 qed_ooo_get_free_buffer(struct qed_hwfn *p_hwfn,
84 struct qed_ooo_info *p_ooo_info);
85
86 void qed_ooo_put_ready_buffer(struct qed_hwfn *p_hwfn,
87 struct qed_ooo_info *p_ooo_info,
88 struct qed_ooo_buffer *p_buffer, u8 on_tail);
89
90 struct qed_ooo_buffer *
91 qed_ooo_get_ready_buffer(struct qed_hwfn *p_hwfn,
92 struct qed_ooo_info *p_ooo_info);
93
94 void qed_ooo_delete_isles(struct qed_hwfn *p_hwfn,
95 struct qed_ooo_info *p_ooo_info,
96 u32 cid, u8 drop_isle, u8 drop_size);
97
98 void qed_ooo_add_new_isle(struct qed_hwfn *p_hwfn,
99 struct qed_ooo_info *p_ooo_info,
100 u32 cid,
101 u8 ooo_isle, struct qed_ooo_buffer *p_buffer);
102
103 void qed_ooo_add_new_buffer(struct qed_hwfn *p_hwfn,
104 struct qed_ooo_info *p_ooo_info,
105 u32 cid,
106 u8 ooo_isle,
107 struct qed_ooo_buffer *p_buffer, u8 buffer_side);
108
109 void qed_ooo_join_isles(struct qed_hwfn *p_hwfn,
110 struct qed_ooo_info *p_ooo_info, u32 cid,
111 u8 left_isle);
112 #else /* IS_ENABLED(CONFIG_QED_ISCSI) */
qed_ooo_save_history_entry(struct qed_hwfn * p_hwfn,struct qed_ooo_info * p_ooo_info,struct ooo_opaque * p_cqe)113 static inline void qed_ooo_save_history_entry(struct qed_hwfn *p_hwfn,
114 struct qed_ooo_info *p_ooo_info,
115 struct ooo_opaque *p_cqe) {}
116
qed_ooo_alloc(struct qed_hwfn * p_hwfn)117 static inline int qed_ooo_alloc(struct qed_hwfn *p_hwfn)
118 {
119 return -EINVAL;
120 }
121
qed_ooo_setup(struct qed_hwfn * p_hwfn)122 static inline void qed_ooo_setup(struct qed_hwfn *p_hwfn) {}
123
qed_ooo_free(struct qed_hwfn * p_hwfn)124 static inline void qed_ooo_free(struct qed_hwfn *p_hwfn) {}
125
126 static inline void
qed_ooo_release_connection_isles(struct qed_hwfn * p_hwfn,struct qed_ooo_info * p_ooo_info,u32 cid)127 qed_ooo_release_connection_isles(struct qed_hwfn *p_hwfn,
128 struct qed_ooo_info *p_ooo_info,
129 u32 cid) {}
130
qed_ooo_release_all_isles(struct qed_hwfn * p_hwfn,struct qed_ooo_info * p_ooo_info)131 static inline void qed_ooo_release_all_isles(struct qed_hwfn *p_hwfn,
132 struct qed_ooo_info *p_ooo_info)
133 {}
134
qed_ooo_put_free_buffer(struct qed_hwfn * p_hwfn,struct qed_ooo_info * p_ooo_info,struct qed_ooo_buffer * p_buffer)135 static inline void qed_ooo_put_free_buffer(struct qed_hwfn *p_hwfn,
136 struct qed_ooo_info *p_ooo_info,
137 struct qed_ooo_buffer *p_buffer) {}
138
139 static inline struct qed_ooo_buffer *
qed_ooo_get_free_buffer(struct qed_hwfn * p_hwfn,struct qed_ooo_info * p_ooo_info)140 qed_ooo_get_free_buffer(struct qed_hwfn *p_hwfn,
141 struct qed_ooo_info *p_ooo_info) { return NULL; }
142
qed_ooo_put_ready_buffer(struct qed_hwfn * p_hwfn,struct qed_ooo_info * p_ooo_info,struct qed_ooo_buffer * p_buffer,u8 on_tail)143 static inline void qed_ooo_put_ready_buffer(struct qed_hwfn *p_hwfn,
144 struct qed_ooo_info *p_ooo_info,
145 struct qed_ooo_buffer *p_buffer,
146 u8 on_tail) {}
147
148 static inline struct qed_ooo_buffer *
qed_ooo_get_ready_buffer(struct qed_hwfn * p_hwfn,struct qed_ooo_info * p_ooo_info)149 qed_ooo_get_ready_buffer(struct qed_hwfn *p_hwfn,
150 struct qed_ooo_info *p_ooo_info) { return NULL; }
151
qed_ooo_delete_isles(struct qed_hwfn * p_hwfn,struct qed_ooo_info * p_ooo_info,u32 cid,u8 drop_isle,u8 drop_size)152 static inline void qed_ooo_delete_isles(struct qed_hwfn *p_hwfn,
153 struct qed_ooo_info *p_ooo_info,
154 u32 cid, u8 drop_isle, u8 drop_size) {}
155
qed_ooo_add_new_isle(struct qed_hwfn * p_hwfn,struct qed_ooo_info * p_ooo_info,u32 cid,u8 ooo_isle,struct qed_ooo_buffer * p_buffer)156 static inline void qed_ooo_add_new_isle(struct qed_hwfn *p_hwfn,
157 struct qed_ooo_info *p_ooo_info,
158 u32 cid, u8 ooo_isle,
159 struct qed_ooo_buffer *p_buffer) {}
160
qed_ooo_add_new_buffer(struct qed_hwfn * p_hwfn,struct qed_ooo_info * p_ooo_info,u32 cid,u8 ooo_isle,struct qed_ooo_buffer * p_buffer,u8 buffer_side)161 static inline void qed_ooo_add_new_buffer(struct qed_hwfn *p_hwfn,
162 struct qed_ooo_info *p_ooo_info,
163 u32 cid, u8 ooo_isle,
164 struct qed_ooo_buffer *p_buffer,
165 u8 buffer_side) {}
166
qed_ooo_join_isles(struct qed_hwfn * p_hwfn,struct qed_ooo_info * p_ooo_info,u32 cid,u8 left_isle)167 static inline void qed_ooo_join_isles(struct qed_hwfn *p_hwfn,
168 struct qed_ooo_info *p_ooo_info, u32 cid,
169 u8 left_isle) {}
170 #endif /* IS_ENABLED(CONFIG_QED_ISCSI) */
171
172 #endif
173