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
20struct 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
31struct qed_ooo_isle {
32	struct list_head list_entry;
33	struct list_head buffers_list;
34};
35
36struct qed_ooo_archipelago {
37	struct list_head isles_list;
38};
39
40struct qed_ooo_history {
41	struct ooo_opaque *p_cqes;
42	u32 head_idx;
43	u32 num_of_cqes;
44};
45
46struct 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)
61void 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
65int qed_ooo_alloc(struct qed_hwfn *p_hwfn);
66
67void qed_ooo_setup(struct qed_hwfn *p_hwfn);
68
69void qed_ooo_free(struct qed_hwfn *p_hwfn);
70
71void qed_ooo_release_connection_isles(struct qed_hwfn *p_hwfn,
72				      struct qed_ooo_info *p_ooo_info,
73				      u32 cid);
74
75void qed_ooo_release_all_isles(struct qed_hwfn *p_hwfn,
76			       struct qed_ooo_info *p_ooo_info);
77
78void 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
82struct qed_ooo_buffer *
83qed_ooo_get_free_buffer(struct qed_hwfn *p_hwfn,
84			struct qed_ooo_info *p_ooo_info);
85
86void 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
90struct qed_ooo_buffer *
91qed_ooo_get_ready_buffer(struct qed_hwfn *p_hwfn,
92			 struct qed_ooo_info *p_ooo_info);
93
94void 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
98void 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
103void 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
109void 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) */
113static 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
117static inline int qed_ooo_alloc(struct qed_hwfn *p_hwfn)
118{
119	return -EINVAL;
120}
121
122static inline void qed_ooo_setup(struct qed_hwfn *p_hwfn) {}
123
124static inline void qed_ooo_free(struct qed_hwfn *p_hwfn) {}
125
126static inline void
127qed_ooo_release_connection_isles(struct qed_hwfn *p_hwfn,
128				 struct qed_ooo_info *p_ooo_info,
129				 u32 cid) {}
130
131static inline void qed_ooo_release_all_isles(struct qed_hwfn *p_hwfn,
132					     struct qed_ooo_info *p_ooo_info)
133					     {}
134
135static 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
139static inline struct qed_ooo_buffer *
140qed_ooo_get_free_buffer(struct qed_hwfn *p_hwfn,
141			struct qed_ooo_info *p_ooo_info) { return NULL; }
142
143static 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
148static inline struct qed_ooo_buffer *
149qed_ooo_get_ready_buffer(struct qed_hwfn *p_hwfn,
150			 struct qed_ooo_info *p_ooo_info) { return NULL; }
151
152static 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
156static 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
161static 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
167static 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