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authorAbhijeet Joglekar <abjoglek@cisco.com>2009-04-17 21:33:26 -0400
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2009-05-13 22:13:09 -0400
commit5df6d737dd4b0fe9eccf943abb3677cfea05a6c4 (patch)
treed3f6bf84dacb80c253743b45da4ecac2dcca4ec6 /drivers/scsi/fnic/cq_exch_desc.h
parent210af919c949a7d6bd330916ef376cec2907d81e (diff)
[SCSI] fnic: Add new Cisco PCI-Express FCoE HBA
fnic is a driver for the Cisco PCI-Express FCoE HBA Signed-off-by: Abhijeet Joglekar <abjoglek@cisco.com> Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi/fnic/cq_exch_desc.h')
-rw-r--r--drivers/scsi/fnic/cq_exch_desc.h182
1 files changed, 182 insertions, 0 deletions
diff --git a/drivers/scsi/fnic/cq_exch_desc.h b/drivers/scsi/fnic/cq_exch_desc.h
new file mode 100644
index 000000000000..501660cfe228
--- /dev/null
+++ b/drivers/scsi/fnic/cq_exch_desc.h
@@ -0,0 +1,182 @@
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 */
24struct 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
39enum 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
46static 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
58struct 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
86static 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
136struct 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
146enum 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
162static 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_ */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-23 12:31:48 -0500