1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright 2008-2010 Cisco Systems, Inc.  All rights reserved.
4  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
5  */
6 
7 #ifndef _CQ_ENET_DESC_H_
8 #define _CQ_ENET_DESC_H_
9 
10 #include "cq_desc.h"
11 
12 /* Ethernet completion queue descriptor: 16B */
13 struct cq_enet_wq_desc {
14 	__le16 completed_index;
15 	__le16 q_number;
16 	u8 reserved[11];
17 	u8 type_color;
18 };
19 
cq_enet_wq_desc_dec(struct cq_enet_wq_desc * desc,u8 * type,u8 * color,u16 * q_number,u16 * completed_index)20 static inline void cq_enet_wq_desc_dec(struct cq_enet_wq_desc *desc,
21 	u8 *type, u8 *color, u16 *q_number, u16 *completed_index)
22 {
23 	cq_desc_dec((struct cq_desc *)desc, type,
24 		color, q_number, completed_index);
25 }
26 
27 /* Completion queue descriptor: Ethernet receive queue, 16B */
28 struct cq_enet_rq_desc {
29 	__le16 completed_index_flags;
30 	__le16 q_number_rss_type_flags;
31 	__le32 rss_hash;
32 	__le16 bytes_written_flags;
33 	__le16 vlan;
34 	__le16 checksum_fcoe;
35 	u8 flags;
36 	u8 type_color;
37 };
38 
39 #define CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT          (0x1 << 12)
40 #define CQ_ENET_RQ_DESC_FLAGS_FCOE                  (0x1 << 13)
41 #define CQ_ENET_RQ_DESC_FLAGS_EOP                   (0x1 << 14)
42 #define CQ_ENET_RQ_DESC_FLAGS_SOP                   (0x1 << 15)
43 
44 #define CQ_ENET_RQ_DESC_RSS_TYPE_BITS               4
45 #define CQ_ENET_RQ_DESC_RSS_TYPE_MASK \
46 	((1 << CQ_ENET_RQ_DESC_RSS_TYPE_BITS) - 1)
47 #define CQ_ENET_RQ_DESC_RSS_TYPE_NONE               0
48 #define CQ_ENET_RQ_DESC_RSS_TYPE_IPv4               1
49 #define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv4           2
50 #define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6               3
51 #define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6           4
52 #define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6_EX            5
53 #define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6_EX        6
54 
55 #define CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC         (0x1 << 14)
56 
57 #define CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS          14
58 #define CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK \
59 	((1 << CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS) - 1)
60 #define CQ_ENET_RQ_DESC_FLAGS_TRUNCATED             (0x1 << 14)
61 #define CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED         (0x1 << 15)
62 
63 #define CQ_ENET_RQ_DESC_VLAN_TCI_VLAN_BITS          12
64 #define CQ_ENET_RQ_DESC_VLAN_TCI_VLAN_MASK \
65 	((1 << CQ_ENET_RQ_DESC_VLAN_TCI_VLAN_BITS) - 1)
66 #define CQ_ENET_RQ_DESC_VLAN_TCI_CFI_MASK           (0x1 << 12)
67 #define CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_BITS     3
68 #define CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_MASK \
69 	((1 << CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_BITS) - 1)
70 #define CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_SHIFT    13
71 
72 #define CQ_ENET_RQ_DESC_FCOE_SOF_BITS               8
73 #define CQ_ENET_RQ_DESC_FCOE_SOF_MASK \
74 	((1 << CQ_ENET_RQ_DESC_FCOE_SOF_BITS) - 1)
75 #define CQ_ENET_RQ_DESC_FCOE_EOF_BITS               8
76 #define CQ_ENET_RQ_DESC_FCOE_EOF_MASK \
77 	((1 << CQ_ENET_RQ_DESC_FCOE_EOF_BITS) - 1)
78 #define CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT              8
79 
80 #define CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK       (0x1 << 0)
81 #define CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK              (0x1 << 0)
82 #define CQ_ENET_RQ_DESC_FLAGS_UDP                   (0x1 << 1)
83 #define CQ_ENET_RQ_DESC_FCOE_ENC_ERROR              (0x1 << 1)
84 #define CQ_ENET_RQ_DESC_FLAGS_TCP                   (0x1 << 2)
85 #define CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK          (0x1 << 3)
86 #define CQ_ENET_RQ_DESC_FLAGS_IPV6                  (0x1 << 4)
87 #define CQ_ENET_RQ_DESC_FLAGS_IPV4                  (0x1 << 5)
88 #define CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT         (0x1 << 6)
89 #define CQ_ENET_RQ_DESC_FLAGS_FCS_OK                (0x1 << 7)
90 
cq_enet_rq_desc_dec(struct cq_enet_rq_desc * desc,u8 * type,u8 * color,u16 * q_number,u16 * completed_index,u8 * ingress_port,u8 * fcoe,u8 * eop,u8 * sop,u8 * rss_type,u8 * csum_not_calc,u32 * rss_hash,u16 * bytes_written,u8 * packet_error,u8 * vlan_stripped,u16 * vlan_tci,u16 * checksum,u8 * fcoe_sof,u8 * fcoe_fc_crc_ok,u8 * fcoe_enc_error,u8 * fcoe_eof,u8 * tcp_udp_csum_ok,u8 * udp,u8 * tcp,u8 * ipv4_csum_ok,u8 * ipv6,u8 * ipv4,u8 * ipv4_fragment,u8 * fcs_ok)91 static inline void cq_enet_rq_desc_dec(struct cq_enet_rq_desc *desc,
92 	u8 *type, u8 *color, u16 *q_number, u16 *completed_index,
93 	u8 *ingress_port, u8 *fcoe, u8 *eop, u8 *sop, u8 *rss_type,
94 	u8 *csum_not_calc, u32 *rss_hash, u16 *bytes_written, u8 *packet_error,
95 	u8 *vlan_stripped, u16 *vlan_tci, u16 *checksum, u8 *fcoe_sof,
96 	u8 *fcoe_fc_crc_ok, u8 *fcoe_enc_error, u8 *fcoe_eof,
97 	u8 *tcp_udp_csum_ok, u8 *udp, u8 *tcp, u8 *ipv4_csum_ok,
98 	u8 *ipv6, u8 *ipv4, u8 *ipv4_fragment, u8 *fcs_ok)
99 {
100 	u16 completed_index_flags;
101 	u16 q_number_rss_type_flags;
102 	u16 bytes_written_flags;
103 
104 	cq_desc_dec((struct cq_desc *)desc, type,
105 		color, q_number, completed_index);
106 
107 	completed_index_flags = le16_to_cpu(desc->completed_index_flags);
108 	q_number_rss_type_flags =
109 		le16_to_cpu(desc->q_number_rss_type_flags);
110 	bytes_written_flags = le16_to_cpu(desc->bytes_written_flags);
111 
112 	*ingress_port = (completed_index_flags &
113 		CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT) ? 1 : 0;
114 	*fcoe = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_FCOE) ?
115 		1 : 0;
116 	*eop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_EOP) ?
117 		1 : 0;
118 	*sop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_SOP) ?
119 		1 : 0;
120 
121 	*rss_type = (u8)((q_number_rss_type_flags >> CQ_DESC_Q_NUM_BITS) &
122 		CQ_ENET_RQ_DESC_RSS_TYPE_MASK);
123 	*csum_not_calc = (q_number_rss_type_flags &
124 		CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC) ? 1 : 0;
125 
126 	*rss_hash = le32_to_cpu(desc->rss_hash);
127 
128 	*bytes_written = bytes_written_flags &
129 		CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK;
130 	*packet_error = (bytes_written_flags &
131 		CQ_ENET_RQ_DESC_FLAGS_TRUNCATED) ? 1 : 0;
132 	*vlan_stripped = (bytes_written_flags &
133 		CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED) ? 1 : 0;
134 
135 	/*
136 	 * Tag Control Information(16) = user_priority(3) + cfi(1) + vlan(12)
137 	 */
138 	*vlan_tci = le16_to_cpu(desc->vlan);
139 
140 	if (*fcoe) {
141 		*fcoe_sof = (u8)(le16_to_cpu(desc->checksum_fcoe) &
142 			CQ_ENET_RQ_DESC_FCOE_SOF_MASK);
143 		*fcoe_fc_crc_ok = (desc->flags &
144 			CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK) ? 1 : 0;
145 		*fcoe_enc_error = (desc->flags &
146 			CQ_ENET_RQ_DESC_FCOE_ENC_ERROR) ? 1 : 0;
147 		*fcoe_eof = (u8)((le16_to_cpu(desc->checksum_fcoe) >>
148 			CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT) &
149 			CQ_ENET_RQ_DESC_FCOE_EOF_MASK);
150 		*checksum = 0;
151 	} else {
152 		*fcoe_sof = 0;
153 		*fcoe_fc_crc_ok = 0;
154 		*fcoe_enc_error = 0;
155 		*fcoe_eof = 0;
156 		*checksum = le16_to_cpu(desc->checksum_fcoe);
157 	}
158 
159 	*tcp_udp_csum_ok =
160 		(desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK) ? 1 : 0;
161 	*udp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_UDP) ? 1 : 0;
162 	*tcp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP) ? 1 : 0;
163 	*ipv4_csum_ok =
164 		(desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK) ? 1 : 0;
165 	*ipv6 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV6) ? 1 : 0;
166 	*ipv4 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4) ? 1 : 0;
167 	*ipv4_fragment =
168 		(desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT) ? 1 : 0;
169 	*fcs_ok = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_FCS_OK) ? 1 : 0;
170 }
171 
172 #endif /* _CQ_ENET_DESC_H_ */
173