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1 | /* |
2 | * Copyright 2008 Cisco Systems, Inc. All rights reserved. | |
3 | * Copyright 2007 Nuova Systems, Inc. All rights reserved. | |
4 | * | |
5 | * This program is free software; you may redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; version 2 of the License. | |
8 | * | |
9 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
10 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
11 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
12 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
13 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
14 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
15 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
16 | * SOFTWARE. | |
17 | */ | |
18 | #ifndef _CQ_EXCH_DESC_H_ | |
19 | #define _CQ_EXCH_DESC_H_ | |
20 | ||
21 | #include "cq_desc.h" | |
22 | ||
23 | /* Exchange completion queue descriptor: 16B */ | |
24 | struct cq_exch_wq_desc { | |
25 | u16 completed_index; | |
26 | u16 q_number; | |
27 | u16 exchange_id; | |
28 | u8 tmpl; | |
29 | u8 reserved0; | |
30 | u32 reserved1; | |
31 | u8 exch_status; | |
32 | u8 reserved2[2]; | |
33 | u8 type_color; | |
34 | }; | |
35 | ||
36 | #define CQ_EXCH_WQ_STATUS_BITS 2 | |
37 | #define CQ_EXCH_WQ_STATUS_MASK ((1 << CQ_EXCH_WQ_STATUS_BITS) - 1) | |
38 | ||
39 | enum cq_exch_status_types { | |
40 | CQ_EXCH_WQ_STATUS_TYPE_COMPLETE = 0, | |
41 | CQ_EXCH_WQ_STATUS_TYPE_ABORT = 1, | |
42 | CQ_EXCH_WQ_STATUS_TYPE_SGL_EOF = 2, | |
43 | CQ_EXCH_WQ_STATUS_TYPE_TMPL_ERR = 3, | |
44 | }; | |
45 | ||
46 | static inline void cq_exch_wq_desc_dec(struct cq_exch_wq_desc *desc_ptr, | |
47 | u8 *type, | |
48 | u8 *color, | |
49 | u16 *q_number, | |
50 | u16 *completed_index, | |
51 | u8 *exch_status) | |
52 | { | |
53 | cq_desc_dec((struct cq_desc *)desc_ptr, type, | |
54 | color, q_number, completed_index); | |
55 | *exch_status = desc_ptr->exch_status & CQ_EXCH_WQ_STATUS_MASK; | |
56 | } | |
57 | ||
58 | struct cq_fcp_rq_desc { | |
59 | u16 completed_index_eop_sop_prt; | |
60 | u16 q_number; | |
61 | u16 exchange_id; | |
62 | u16 tmpl; | |
63 | u16 bytes_written; | |
64 | u16 vlan; | |
65 | u8 sof; | |
66 | u8 eof; | |
67 | u8 fcs_fer_fck; | |
68 | u8 type_color; | |
69 | }; | |
70 | ||
71 | #define CQ_FCP_RQ_DESC_FLAGS_SOP (1 << 15) | |
72 | #define CQ_FCP_RQ_DESC_FLAGS_EOP (1 << 14) | |
73 | #define CQ_FCP_RQ_DESC_FLAGS_PRT (1 << 12) | |
74 | #define CQ_FCP_RQ_DESC_TMPL_MASK 0x1f | |
75 | #define CQ_FCP_RQ_DESC_BYTES_WRITTEN_MASK 0x3fff | |
76 | #define CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT 14 | |
77 | #define CQ_FCP_RQ_DESC_PACKET_ERR_MASK (1 << CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT) | |
78 | #define CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT 15 | |
79 | #define CQ_FCP_RQ_DESC_VS_STRIPPED_MASK (1 << CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT) | |
80 | #define CQ_FCP_RQ_DESC_FC_CRC_OK_MASK 0x1 | |
81 | #define CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT 1 | |
82 | #define CQ_FCP_RQ_DESC_FCOE_ERR_MASK (1 << CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT) | |
83 | #define CQ_FCP_RQ_DESC_FCS_OK_SHIFT 7 | |
84 | #define CQ_FCP_RQ_DESC_FCS_OK_MASK (1 << CQ_FCP_RQ_DESC_FCS_OK_SHIFT) | |
85 | ||
86 | static inline void cq_fcp_rq_desc_dec(struct cq_fcp_rq_desc *desc_ptr, | |
87 | u8 *type, | |
88 | u8 *color, | |
89 | u16 *q_number, | |
90 | u16 *completed_index, | |
91 | u8 *eop, | |
92 | u8 *sop, | |
93 | u8 *fck, | |
94 | u16 *exchange_id, | |
95 | u16 *tmpl, | |
96 | u32 *bytes_written, | |
97 | u8 *sof, | |
98 | u8 *eof, | |
99 | u8 *ingress_port, | |
100 | u8 *packet_err, | |
101 | u8 *fcoe_err, | |
102 | u8 *fcs_ok, | |
103 | u8 *vlan_stripped, | |
104 | u16 *vlan) | |
105 | { | |
106 | cq_desc_dec((struct cq_desc *)desc_ptr, type, | |
107 | color, q_number, completed_index); | |
108 | *eop = (desc_ptr->completed_index_eop_sop_prt & | |
109 | CQ_FCP_RQ_DESC_FLAGS_EOP) ? 1 : 0; | |
110 | *sop = (desc_ptr->completed_index_eop_sop_prt & | |
111 | CQ_FCP_RQ_DESC_FLAGS_SOP) ? 1 : 0; | |
112 | *ingress_port = | |
113 | (desc_ptr->completed_index_eop_sop_prt & | |
114 | CQ_FCP_RQ_DESC_FLAGS_PRT) ? 1 : 0; | |
115 | *exchange_id = desc_ptr->exchange_id; | |
116 | *tmpl = desc_ptr->tmpl & CQ_FCP_RQ_DESC_TMPL_MASK; | |
117 | *bytes_written = | |
118 | desc_ptr->bytes_written & CQ_FCP_RQ_DESC_BYTES_WRITTEN_MASK; | |
119 | *packet_err = | |
120 | (desc_ptr->bytes_written & CQ_FCP_RQ_DESC_PACKET_ERR_MASK) >> | |
121 | CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT; | |
122 | *vlan_stripped = | |
123 | (desc_ptr->bytes_written & CQ_FCP_RQ_DESC_VS_STRIPPED_MASK) >> | |
124 | CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT; | |
125 | *vlan = desc_ptr->vlan; | |
126 | *sof = desc_ptr->sof; | |
127 | *fck = desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FC_CRC_OK_MASK; | |
128 | *fcoe_err = (desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FCOE_ERR_MASK) >> | |
129 | CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT; | |
130 | *eof = desc_ptr->eof; | |
131 | *fcs_ok = | |
132 | (desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FCS_OK_MASK) >> | |
133 | CQ_FCP_RQ_DESC_FCS_OK_SHIFT; | |
134 | } | |
135 | ||
136 | struct cq_sgl_desc { | |
137 | u16 exchange_id; | |
138 | u16 q_number; | |
139 | u32 active_burst_offset; | |
140 | u32 tot_data_bytes; | |
141 | u16 tmpl; | |
142 | u8 sgl_err; | |
143 | u8 type_color; | |
144 | }; | |
145 | ||
146 | enum cq_sgl_err_types { | |
147 | CQ_SGL_ERR_NO_ERROR = 0, | |
148 | CQ_SGL_ERR_OVERFLOW, /* data ran beyond end of SGL */ | |
149 | CQ_SGL_ERR_SGL_LCL_ADDR_ERR, /* sgl access to local vnic addr illegal*/ | |
150 | CQ_SGL_ERR_ADDR_RSP_ERR, /* sgl address error */ | |
151 | CQ_SGL_ERR_DATA_RSP_ERR, /* sgl data rsp error */ | |
152 | CQ_SGL_ERR_CNT_ZERO_ERR, /* SGL count is 0 */ | |
153 | CQ_SGL_ERR_CNT_MAX_ERR, /* SGL count is larger than supported */ | |
154 | CQ_SGL_ERR_ORDER_ERR, /* frames recv on both ports, order err */ | |
155 | CQ_SGL_ERR_DATA_LCL_ADDR_ERR,/* sgl data buf to local vnic addr ill */ | |
156 | CQ_SGL_ERR_HOST_CQ_ERR, /* host cq entry to local vnic addr ill */ | |
157 | }; | |
158 | ||
159 | #define CQ_SGL_SGL_ERR_MASK 0x1f | |
160 | #define CQ_SGL_TMPL_MASK 0x1f | |
161 | ||
162 | static inline void cq_sgl_desc_dec(struct cq_sgl_desc *desc_ptr, | |
163 | u8 *type, | |
164 | u8 *color, | |
165 | u16 *q_number, | |
166 | u16 *exchange_id, | |
167 | u32 *active_burst_offset, | |
168 | u32 *tot_data_bytes, | |
169 | u16 *tmpl, | |
170 | u8 *sgl_err) | |
171 | { | |
172 | /* Cheat a little by assuming exchange_id is the same as completed | |
173 | index */ | |
174 | cq_desc_dec((struct cq_desc *)desc_ptr, type, color, q_number, | |
175 | exchange_id); | |
176 | *active_burst_offset = desc_ptr->active_burst_offset; | |
177 | *tot_data_bytes = desc_ptr->tot_data_bytes; | |
178 | *tmpl = desc_ptr->tmpl & CQ_SGL_TMPL_MASK; | |
179 | *sgl_err = desc_ptr->sgl_err & CQ_SGL_SGL_ERR_MASK; | |
180 | } | |
181 | ||
182 | #endif /* _CQ_EXCH_DESC_H_ */ |