1 /* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */
2 
3 #ifndef __QPLIB_TLV_H__
4 #define __QPLIB_TLV_H__
5 
6 struct roce_tlv {
7 	struct tlv tlv;
8 	u8 total_size; // in units of 16 byte chunks
9 	u8 unused[7];  // for 16 byte alignment
10 };
11 
12 #define CHUNK_SIZE 16
13 #define CHUNKS(x) (((x) + CHUNK_SIZE - 1) / CHUNK_SIZE)
14 
15 static inline  void __roce_1st_tlv_prep(struct roce_tlv *rtlv, u8 tot_chunks,
16 					u16 content_bytes, u8 flags)
17 {
18 	rtlv->tlv.cmd_discr = cpu_to_le16(CMD_DISCR_TLV_ENCAP);
19 	rtlv->tlv.tlv_type = cpu_to_le16(TLV_TYPE_ROCE_SP_COMMAND);
20 	rtlv->tlv.length = cpu_to_le16(content_bytes);
21 	rtlv->tlv.flags = TLV_FLAGS_REQUIRED;
22 	rtlv->tlv.flags |= flags ? TLV_FLAGS_MORE : 0;
23 	rtlv->total_size = (tot_chunks);
24 }
25 
26 static inline void __roce_ext_tlv_prep(struct roce_tlv *rtlv, u16 tlv_type,
27 				       u16 content_bytes, u8 more, u8 flags)
28 {
29 	rtlv->tlv.cmd_discr = cpu_to_le16(CMD_DISCR_TLV_ENCAP);
30 	rtlv->tlv.tlv_type = cpu_to_le16(tlv_type);
31 	rtlv->tlv.length = cpu_to_le16(content_bytes);
32 	rtlv->tlv.flags |= more ? TLV_FLAGS_MORE : 0;
33 	rtlv->tlv.flags |= flags ? TLV_FLAGS_REQUIRED : 0;
34 }
35 
36 /*
37  * TLV size in units of 16 byte chunks
38  */
39 #define TLV_SIZE ((sizeof(struct roce_tlv) + 15) / 16)
40 /*
41  * TLV length in bytes
42  */
43 #define TLV_BYTES (TLV_SIZE * 16)
44 
45 #define HAS_TLV_HEADER(msg) (le16_to_cpu(((struct tlv *)(msg))->cmd_discr) == CMD_DISCR_TLV_ENCAP)
46 #define GET_TLV_DATA(tlv)   ((void *)&((uint8_t *)(tlv))[TLV_BYTES])
47 
48 static inline u8 __get_cmdq_base_opcode(struct cmdq_base *req, u32 size)
49 {
50 	if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
51 		return ((struct cmdq_base *)GET_TLV_DATA(req))->opcode;
52 	else
53 		return req->opcode;
54 }
55 
56 static inline void __set_cmdq_base_opcode(struct cmdq_base *req,
57 					  u32 size, u8 val)
58 {
59 	if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
60 		((struct cmdq_base *)GET_TLV_DATA(req))->opcode = val;
61 	else
62 		req->opcode = val;
63 }
64 
65 static inline __le16 __get_cmdq_base_cookie(struct cmdq_base *req, u32 size)
66 {
67 	if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
68 		return ((struct cmdq_base *)GET_TLV_DATA(req))->cookie;
69 	else
70 		return req->cookie;
71 }
72 
73 static inline void __set_cmdq_base_cookie(struct cmdq_base *req,
74 					  u32 size, __le16 val)
75 {
76 	if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
77 		((struct cmdq_base *)GET_TLV_DATA(req))->cookie = val;
78 	else
79 		req->cookie = val;
80 }
81 
82 static inline __le64 __get_cmdq_base_resp_addr(struct cmdq_base *req, u32 size)
83 {
84 	if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
85 		return ((struct cmdq_base *)GET_TLV_DATA(req))->resp_addr;
86 	else
87 		return req->resp_addr;
88 }
89 
90 static inline void __set_cmdq_base_resp_addr(struct cmdq_base *req,
91 					     u32 size, __le64 val)
92 {
93 	if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
94 		((struct cmdq_base *)GET_TLV_DATA(req))->resp_addr = val;
95 	else
96 		req->resp_addr = val;
97 }
98 
99 static inline u8 __get_cmdq_base_resp_size(struct cmdq_base *req, u32 size)
100 {
101 	if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
102 		return ((struct cmdq_base *)GET_TLV_DATA(req))->resp_size;
103 	else
104 		return req->resp_size;
105 }
106 
107 static inline void __set_cmdq_base_resp_size(struct cmdq_base *req,
108 					     u32 size, u8 val)
109 {
110 	if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
111 		((struct cmdq_base *)GET_TLV_DATA(req))->resp_size = val;
112 	else
113 		req->resp_size = val;
114 }
115 
116 static inline u8 __get_cmdq_base_cmd_size(struct cmdq_base *req, u32 size)
117 {
118 	if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
119 		return ((struct roce_tlv *)(req))->total_size;
120 	else
121 		return req->cmd_size;
122 }
123 
124 static inline void __set_cmdq_base_cmd_size(struct cmdq_base *req,
125 					    u32 size, u8 val)
126 {
127 	if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
128 		((struct cmdq_base *)GET_TLV_DATA(req))->cmd_size = val;
129 	else
130 		req->cmd_size = val;
131 }
132 
133 static inline __le16 __get_cmdq_base_flags(struct cmdq_base *req, u32 size)
134 {
135 	if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
136 		return ((struct cmdq_base *)GET_TLV_DATA(req))->flags;
137 	else
138 		return req->flags;
139 }
140 
141 static inline void __set_cmdq_base_flags(struct cmdq_base *req,
142 					 u32 size, __le16 val)
143 {
144 	if (HAS_TLV_HEADER(req) && size > TLV_BYTES)
145 		((struct cmdq_base *)GET_TLV_DATA(req))->flags = val;
146 	else
147 		req->flags = val;
148 }
149 
150 struct bnxt_qplib_tlv_modify_cc_req {
151 	struct roce_tlv				tlv_hdr;
152 	struct cmdq_modify_roce_cc		base_req;
153 	__le64					tlvpad;
154 	struct cmdq_modify_roce_cc_gen1_tlv	ext_req;
155 };
156 
157 struct bnxt_qplib_tlv_query_rcc_sb {
158 	struct roce_tlv					tlv_hdr;
159 	struct creq_query_roce_cc_resp_sb		base_sb;
160 	struct creq_query_roce_cc_gen1_resp_sb_tlv	gen1_sb;
161 };
162 #endif /* __QPLIB_TLV_H__ */
163