1*14b24e2bSVaishali Kulkarni /*
2*14b24e2bSVaishali Kulkarni * CDDL HEADER START
3*14b24e2bSVaishali Kulkarni *
4*14b24e2bSVaishali Kulkarni * The contents of this file are subject to the terms of the
5*14b24e2bSVaishali Kulkarni * Common Development and Distribution License, v.1,  (the "License").
6*14b24e2bSVaishali Kulkarni * You may not use this file except in compliance with the License.
7*14b24e2bSVaishali Kulkarni *
8*14b24e2bSVaishali Kulkarni * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9*14b24e2bSVaishali Kulkarni * or http://opensource.org/licenses/CDDL-1.0.
10*14b24e2bSVaishali Kulkarni * See the License for the specific language governing permissions
11*14b24e2bSVaishali Kulkarni * and limitations under the License.
12*14b24e2bSVaishali Kulkarni *
13*14b24e2bSVaishali Kulkarni * When distributing Covered Code, include this CDDL HEADER in each
14*14b24e2bSVaishali Kulkarni * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15*14b24e2bSVaishali Kulkarni * If applicable, add the following below this CDDL HEADER, with the
16*14b24e2bSVaishali Kulkarni * fields enclosed by brackets "[]" replaced with your own identifying
17*14b24e2bSVaishali Kulkarni * information: Portions Copyright [yyyy] [name of copyright owner]
18*14b24e2bSVaishali Kulkarni *
19*14b24e2bSVaishali Kulkarni * CDDL HEADER END
20*14b24e2bSVaishali Kulkarni */
21*14b24e2bSVaishali Kulkarni 
22*14b24e2bSVaishali Kulkarni /*
23*14b24e2bSVaishali Kulkarni * Copyright 2014-2017 Cavium, Inc.
24*14b24e2bSVaishali Kulkarni * The contents of this file are subject to the terms of the Common Development
25*14b24e2bSVaishali Kulkarni * and Distribution License, v.1,  (the "License").
26*14b24e2bSVaishali Kulkarni 
27*14b24e2bSVaishali Kulkarni * You may not use this file except in compliance with the License.
28*14b24e2bSVaishali Kulkarni 
29*14b24e2bSVaishali Kulkarni * You can obtain a copy of the License at available
30*14b24e2bSVaishali Kulkarni * at http://opensource.org/licenses/CDDL-1.0
31*14b24e2bSVaishali Kulkarni 
32*14b24e2bSVaishali Kulkarni * See the License for the specific language governing permissions and
33*14b24e2bSVaishali Kulkarni * limitations under the License.
34*14b24e2bSVaishali Kulkarni */
35*14b24e2bSVaishali Kulkarni 
36*14b24e2bSVaishali Kulkarni #ifndef __ISCSI_COMMON__
37*14b24e2bSVaishali Kulkarni #define __ISCSI_COMMON__
38*14b24e2bSVaishali Kulkarni /**********************/
39*14b24e2bSVaishali Kulkarni /* ISCSI FW CONSTANTS */
40*14b24e2bSVaishali Kulkarni /**********************/
41*14b24e2bSVaishali Kulkarni 
42*14b24e2bSVaishali Kulkarni /* iSCSI HSI constants */
43*14b24e2bSVaishali Kulkarni #define ISCSI_DEFAULT_MTU	(1500)
44*14b24e2bSVaishali Kulkarni 
45*14b24e2bSVaishali Kulkarni /* KWQ (kernel work queue) layer codes */
46*14b24e2bSVaishali Kulkarni #define ISCSI_SLOW_PATH_LAYER_CODE   (6)
47*14b24e2bSVaishali Kulkarni 
48*14b24e2bSVaishali Kulkarni /* iSCSI parameter defaults */
49*14b24e2bSVaishali Kulkarni #define ISCSI_DEFAULT_HEADER_DIGEST         (0)
50*14b24e2bSVaishali Kulkarni #define ISCSI_DEFAULT_DATA_DIGEST           (0)
51*14b24e2bSVaishali Kulkarni #define ISCSI_DEFAULT_INITIAL_R2T           (1)
52*14b24e2bSVaishali Kulkarni #define ISCSI_DEFAULT_IMMEDIATE_DATA        (1)
53*14b24e2bSVaishali Kulkarni #define ISCSI_DEFAULT_MAX_PDU_LENGTH        (0x2000)
54*14b24e2bSVaishali Kulkarni #define ISCSI_DEFAULT_FIRST_BURST_LENGTH    (0x10000)
55*14b24e2bSVaishali Kulkarni #define ISCSI_DEFAULT_MAX_BURST_LENGTH      (0x40000)
56*14b24e2bSVaishali Kulkarni #define ISCSI_DEFAULT_MAX_OUTSTANDING_R2T   (1)
57*14b24e2bSVaishali Kulkarni 
58*14b24e2bSVaishali Kulkarni /* iSCSI parameter limits */
59*14b24e2bSVaishali Kulkarni #define ISCSI_MIN_VAL_MAX_PDU_LENGTH        (0x200)
60*14b24e2bSVaishali Kulkarni #define ISCSI_MAX_VAL_MAX_PDU_LENGTH        (0xffffff)
61*14b24e2bSVaishali Kulkarni #define ISCSI_MIN_VAL_BURST_LENGTH          (0x200)
62*14b24e2bSVaishali Kulkarni #define ISCSI_MAX_VAL_BURST_LENGTH          (0xffffff)
63*14b24e2bSVaishali Kulkarni #define ISCSI_MIN_VAL_MAX_OUTSTANDING_R2T   (1)
64*14b24e2bSVaishali Kulkarni #define ISCSI_MAX_VAL_MAX_OUTSTANDING_R2T   (0xff) // 0x10000 according to RFC
65*14b24e2bSVaishali Kulkarni 
66*14b24e2bSVaishali Kulkarni #define ISCSI_AHS_CNTL_SIZE 4
67*14b24e2bSVaishali Kulkarni 
68*14b24e2bSVaishali Kulkarni #define ISCSI_WQE_NUM_SGES_SLOWIO           (0xf)
69*14b24e2bSVaishali Kulkarni 
70*14b24e2bSVaishali Kulkarni /* iSCSI reserved params */
71*14b24e2bSVaishali Kulkarni #define ISCSI_ITT_ALL_ONES					(0xffffffff)
72*14b24e2bSVaishali Kulkarni #define ISCSI_TTT_ALL_ONES					(0xffffffff)
73*14b24e2bSVaishali Kulkarni 
74*14b24e2bSVaishali Kulkarni #define ISCSI_OPTION_1_OFF_CHIP_TCP 1
75*14b24e2bSVaishali Kulkarni #define ISCSI_OPTION_2_ON_CHIP_TCP 2
76*14b24e2bSVaishali Kulkarni 
77*14b24e2bSVaishali Kulkarni #define ISCSI_INITIATOR_MODE 0
78*14b24e2bSVaishali Kulkarni #define ISCSI_TARGET_MODE 1
79*14b24e2bSVaishali Kulkarni 
80*14b24e2bSVaishali Kulkarni 
81*14b24e2bSVaishali Kulkarni /* iSCSI request op codes */
82*14b24e2bSVaishali Kulkarni #define ISCSI_OPCODE_NOP_OUT				(0)
83*14b24e2bSVaishali Kulkarni #define ISCSI_OPCODE_SCSI_CMD       		(1)
84*14b24e2bSVaishali Kulkarni #define ISCSI_OPCODE_TMF_REQUEST			(2)
85*14b24e2bSVaishali Kulkarni #define ISCSI_OPCODE_LOGIN_REQUEST			(3)
86*14b24e2bSVaishali Kulkarni #define ISCSI_OPCODE_TEXT_REQUEST       	(4)
87*14b24e2bSVaishali Kulkarni #define ISCSI_OPCODE_DATA_OUT				(5)
88*14b24e2bSVaishali Kulkarni #define ISCSI_OPCODE_LOGOUT_REQUEST     	(6)
89*14b24e2bSVaishali Kulkarni 
90*14b24e2bSVaishali Kulkarni /* iSCSI response/messages op codes */
91*14b24e2bSVaishali Kulkarni #define ISCSI_OPCODE_NOP_IN             (0x20)
92*14b24e2bSVaishali Kulkarni #define ISCSI_OPCODE_SCSI_RESPONSE      (0x21)
93*14b24e2bSVaishali Kulkarni #define ISCSI_OPCODE_TMF_RESPONSE       (0x22)
94*14b24e2bSVaishali Kulkarni #define ISCSI_OPCODE_LOGIN_RESPONSE     (0x23)
95*14b24e2bSVaishali Kulkarni #define ISCSI_OPCODE_TEXT_RESPONSE      (0x24)
96*14b24e2bSVaishali Kulkarni #define ISCSI_OPCODE_DATA_IN            (0x25)
97*14b24e2bSVaishali Kulkarni #define ISCSI_OPCODE_LOGOUT_RESPONSE    (0x26)
98*14b24e2bSVaishali Kulkarni #define ISCSI_OPCODE_R2T                (0x31)
99*14b24e2bSVaishali Kulkarni #define ISCSI_OPCODE_ASYNC_MSG          (0x32)
100*14b24e2bSVaishali Kulkarni #define ISCSI_OPCODE_REJECT             (0x3f)
101*14b24e2bSVaishali Kulkarni 
102*14b24e2bSVaishali Kulkarni /* iSCSI stages */
103*14b24e2bSVaishali Kulkarni #define ISCSI_STAGE_SECURITY_NEGOTIATION            (0)
104*14b24e2bSVaishali Kulkarni #define ISCSI_STAGE_LOGIN_OPERATIONAL_NEGOTIATION   (1)
105*14b24e2bSVaishali Kulkarni #define ISCSI_STAGE_FULL_FEATURE_PHASE              (3)
106*14b24e2bSVaishali Kulkarni 
107*14b24e2bSVaishali Kulkarni /* iSCSI CQE errors */
108*14b24e2bSVaishali Kulkarni #define CQE_ERROR_BITMAP_DATA_DIGEST          (0x08)
109*14b24e2bSVaishali Kulkarni #define CQE_ERROR_BITMAP_RCV_ON_INVALID_CONN  (0x10)
110*14b24e2bSVaishali Kulkarni #define CQE_ERROR_BITMAP_DATA_TRUNCATED       (0x20)
111*14b24e2bSVaishali Kulkarni 
112*14b24e2bSVaishali Kulkarni 
113*14b24e2bSVaishali Kulkarni /*
114*14b24e2bSVaishali Kulkarni  * ISCSI SGL entry
115*14b24e2bSVaishali Kulkarni  */
116*14b24e2bSVaishali Kulkarni struct cqe_error_bitmap
117*14b24e2bSVaishali Kulkarni {
118*14b24e2bSVaishali Kulkarni 	u8 cqe_error_status_bits;
119*14b24e2bSVaishali Kulkarni #define CQE_ERROR_BITMAP_DIF_ERR_BITS_MASK         0x7 /* Mark task with DIF error (3 bit): [0]-CRC/checksum, [1]-app tag, [2]-reference tag */
120*14b24e2bSVaishali Kulkarni #define CQE_ERROR_BITMAP_DIF_ERR_BITS_SHIFT        0
121*14b24e2bSVaishali Kulkarni #define CQE_ERROR_BITMAP_DATA_DIGEST_ERR_MASK      0x1 /* Mark task with data digest error (1 bit) */
122*14b24e2bSVaishali Kulkarni #define CQE_ERROR_BITMAP_DATA_DIGEST_ERR_SHIFT     3
123*14b24e2bSVaishali Kulkarni #define CQE_ERROR_BITMAP_RCV_ON_INVALID_CONN_MASK  0x1 /* Mark receive on invalid connection */
124*14b24e2bSVaishali Kulkarni #define CQE_ERROR_BITMAP_RCV_ON_INVALID_CONN_SHIFT 4
125*14b24e2bSVaishali Kulkarni #define CQE_ERROR_BITMAP_DATA_TRUNCATED_ERR_MASK   0x1 /* Target Mode - Mark middle task error, data truncated */
126*14b24e2bSVaishali Kulkarni #define CQE_ERROR_BITMAP_DATA_TRUNCATED_ERR_SHIFT  5
127*14b24e2bSVaishali Kulkarni #define CQE_ERROR_BITMAP_UNDER_RUN_ERR_MASK        0x1
128*14b24e2bSVaishali Kulkarni #define CQE_ERROR_BITMAP_UNDER_RUN_ERR_SHIFT       6
129*14b24e2bSVaishali Kulkarni #define CQE_ERROR_BITMAP_RESERVED2_MASK            0x1
130*14b24e2bSVaishali Kulkarni #define CQE_ERROR_BITMAP_RESERVED2_SHIFT           7
131*14b24e2bSVaishali Kulkarni };
132*14b24e2bSVaishali Kulkarni 
133*14b24e2bSVaishali Kulkarni 
134*14b24e2bSVaishali Kulkarni union cqe_error_status
135*14b24e2bSVaishali Kulkarni {
136*14b24e2bSVaishali Kulkarni 	u8 error_status /* all error bits as uint8 */;
137*14b24e2bSVaishali Kulkarni 	struct cqe_error_bitmap error_bits /* cqe errors bitmap */;
138*14b24e2bSVaishali Kulkarni };
139*14b24e2bSVaishali Kulkarni 
140*14b24e2bSVaishali Kulkarni 
141*14b24e2bSVaishali Kulkarni /*
142*14b24e2bSVaishali Kulkarni  * iSCSI Login Response PDU header
143*14b24e2bSVaishali Kulkarni  */
144*14b24e2bSVaishali Kulkarni struct data_hdr
145*14b24e2bSVaishali Kulkarni {
146*14b24e2bSVaishali Kulkarni 	__le32 data[12] /* iscsi header data */;
147*14b24e2bSVaishali Kulkarni };
148*14b24e2bSVaishali Kulkarni 
149*14b24e2bSVaishali Kulkarni 
150*14b24e2bSVaishali Kulkarni /*
151*14b24e2bSVaishali Kulkarni  * iSCSI Asynchronous Message PDU header
152*14b24e2bSVaishali Kulkarni  */
153*14b24e2bSVaishali Kulkarni struct iscsi_async_msg_hdr
154*14b24e2bSVaishali Kulkarni {
155*14b24e2bSVaishali Kulkarni 	__le16 reserved0 /* reserved */;
156*14b24e2bSVaishali Kulkarni 	u8 flags_attr;
157*14b24e2bSVaishali Kulkarni #define ISCSI_ASYNC_MSG_HDR_RSRV_MASK           0x7F /* reserved */
158*14b24e2bSVaishali Kulkarni #define ISCSI_ASYNC_MSG_HDR_RSRV_SHIFT          0
159*14b24e2bSVaishali Kulkarni #define ISCSI_ASYNC_MSG_HDR_CONST1_MASK         0x1 /* const1 */
160*14b24e2bSVaishali Kulkarni #define ISCSI_ASYNC_MSG_HDR_CONST1_SHIFT        7
161*14b24e2bSVaishali Kulkarni 	u8 opcode /* opcode */;
162*14b24e2bSVaishali Kulkarni 	__le32 hdr_second_dword;
163*14b24e2bSVaishali Kulkarni #define ISCSI_ASYNC_MSG_HDR_DATA_SEG_LEN_MASK   0xFFFFFF /* DataSegmentLength */
164*14b24e2bSVaishali Kulkarni #define ISCSI_ASYNC_MSG_HDR_DATA_SEG_LEN_SHIFT  0
165*14b24e2bSVaishali Kulkarni #define ISCSI_ASYNC_MSG_HDR_TOTAL_AHS_LEN_MASK  0xFF /* TotalAHSLength */
166*14b24e2bSVaishali Kulkarni #define ISCSI_ASYNC_MSG_HDR_TOTAL_AHS_LEN_SHIFT 24
167*14b24e2bSVaishali Kulkarni 	struct regpair lun /* Logical Unit Number */;
168*14b24e2bSVaishali Kulkarni 	__le32 all_ones /* should be 0xffffffff */;
169*14b24e2bSVaishali Kulkarni 	__le32 reserved1 /* reserved */;
170*14b24e2bSVaishali Kulkarni 	__le32 stat_sn /* stat_sn */;
171*14b24e2bSVaishali Kulkarni 	__le32 exp_cmd_sn /* exp_cmd_sn */;
172*14b24e2bSVaishali Kulkarni 	__le32 max_cmd_sn /* max_cmd_sn */;
173*14b24e2bSVaishali Kulkarni 	__le16 param1_rsrv /* Parameter1 or Reserved */;
174*14b24e2bSVaishali Kulkarni 	u8 async_vcode /* AsuncVCode */;
175*14b24e2bSVaishali Kulkarni 	u8 async_event /* AsyncEvent */;
176*14b24e2bSVaishali Kulkarni 	__le16 param3_rsrv /* Parameter3 or Reserved */;
177*14b24e2bSVaishali Kulkarni 	__le16 param2_rsrv /* Parameter2 or Reserved */;
178*14b24e2bSVaishali Kulkarni 	__le32 reserved7 /* reserved */;
179*14b24e2bSVaishali Kulkarni };
180*14b24e2bSVaishali Kulkarni 
181*14b24e2bSVaishali Kulkarni 
182*14b24e2bSVaishali Kulkarni /*
183*14b24e2bSVaishali Kulkarni  * iSCSI Command PDU header
184*14b24e2bSVaishali Kulkarni  */
185*14b24e2bSVaishali Kulkarni struct iscsi_cmd_hdr
186*14b24e2bSVaishali Kulkarni {
187*14b24e2bSVaishali Kulkarni 	__le16 reserved1 /* reserved */;
188*14b24e2bSVaishali Kulkarni 	u8 flags_attr;
189*14b24e2bSVaishali Kulkarni #define ISCSI_CMD_HDR_ATTR_MASK           0x7 /* attributes */
190*14b24e2bSVaishali Kulkarni #define ISCSI_CMD_HDR_ATTR_SHIFT          0
191*14b24e2bSVaishali Kulkarni #define ISCSI_CMD_HDR_RSRV_MASK           0x3 /* reserved */
192*14b24e2bSVaishali Kulkarni #define ISCSI_CMD_HDR_RSRV_SHIFT          3
193*14b24e2bSVaishali Kulkarni #define ISCSI_CMD_HDR_WRITE_MASK          0x1 /* write */
194*14b24e2bSVaishali Kulkarni #define ISCSI_CMD_HDR_WRITE_SHIFT         5
195*14b24e2bSVaishali Kulkarni #define ISCSI_CMD_HDR_READ_MASK           0x1 /* read */
196*14b24e2bSVaishali Kulkarni #define ISCSI_CMD_HDR_READ_SHIFT          6
197*14b24e2bSVaishali Kulkarni #define ISCSI_CMD_HDR_FINAL_MASK          0x1 /* final */
198*14b24e2bSVaishali Kulkarni #define ISCSI_CMD_HDR_FINAL_SHIFT         7
199*14b24e2bSVaishali Kulkarni 	u8 hdr_first_byte;
200*14b24e2bSVaishali Kulkarni #define ISCSI_CMD_HDR_OPCODE_MASK         0x3F /* Opcode */
201*14b24e2bSVaishali Kulkarni #define ISCSI_CMD_HDR_OPCODE_SHIFT        0
202*14b24e2bSVaishali Kulkarni #define ISCSI_CMD_HDR_IMM_MASK            0x1 /* Immediate delivery */
203*14b24e2bSVaishali Kulkarni #define ISCSI_CMD_HDR_IMM_SHIFT           6
204*14b24e2bSVaishali Kulkarni #define ISCSI_CMD_HDR_RSRV1_MASK          0x1 /* first bit of iSCSI PDU header */
205*14b24e2bSVaishali Kulkarni #define ISCSI_CMD_HDR_RSRV1_SHIFT         7
206*14b24e2bSVaishali Kulkarni 	__le32 hdr_second_dword;
207*14b24e2bSVaishali Kulkarni #define ISCSI_CMD_HDR_DATA_SEG_LEN_MASK   0xFFFFFF /* DataSegmentLength */
208*14b24e2bSVaishali Kulkarni #define ISCSI_CMD_HDR_DATA_SEG_LEN_SHIFT  0
209*14b24e2bSVaishali Kulkarni #define ISCSI_CMD_HDR_TOTAL_AHS_LEN_MASK  0xFF /* TotalAHSLength */
210*14b24e2bSVaishali Kulkarni #define ISCSI_CMD_HDR_TOTAL_AHS_LEN_SHIFT 24
211*14b24e2bSVaishali Kulkarni 	struct regpair lun /* Logical Unit Number. [constant, initialized] */;
212*14b24e2bSVaishali Kulkarni 	__le32 itt /* Initiator Task Tag (only 2 bytes are significant). [constant, initialized] */;
213*14b24e2bSVaishali Kulkarni 	__le32 expected_transfer_length /* Expected Data Transfer Length (only 3 bytes are significant) */;
214*14b24e2bSVaishali Kulkarni 	__le32 cmd_sn /* CmdSn. [constant, initialized] */;
215*14b24e2bSVaishali Kulkarni 	__le32 exp_stat_sn /* various fields for middle-path PDU. [constant, initialized] */;
216*14b24e2bSVaishali Kulkarni 	__le32 cdb[4] /* CDB. [constant, initialized] */;
217*14b24e2bSVaishali Kulkarni };
218*14b24e2bSVaishali Kulkarni 
219*14b24e2bSVaishali Kulkarni 
220*14b24e2bSVaishali Kulkarni /*
221*14b24e2bSVaishali Kulkarni  * iSCSI Common PDU header
222*14b24e2bSVaishali Kulkarni  */
223*14b24e2bSVaishali Kulkarni struct iscsi_common_hdr
224*14b24e2bSVaishali Kulkarni {
225*14b24e2bSVaishali Kulkarni 	u8 hdr_status /* Status field of ISCSI header */;
226*14b24e2bSVaishali Kulkarni 	u8 hdr_response /* Response field of ISCSI header for Responses / Reserved for Data-In */;
227*14b24e2bSVaishali Kulkarni 	u8 hdr_flags /* Flags field of ISCSI header */;
228*14b24e2bSVaishali Kulkarni 	u8 hdr_first_byte;
229*14b24e2bSVaishali Kulkarni #define ISCSI_COMMON_HDR_OPCODE_MASK         0x3F /* Opcode */
230*14b24e2bSVaishali Kulkarni #define ISCSI_COMMON_HDR_OPCODE_SHIFT        0
231*14b24e2bSVaishali Kulkarni #define ISCSI_COMMON_HDR_IMM_MASK            0x1 /* Immediate */
232*14b24e2bSVaishali Kulkarni #define ISCSI_COMMON_HDR_IMM_SHIFT           6
233*14b24e2bSVaishali Kulkarni #define ISCSI_COMMON_HDR_RSRV_MASK           0x1 /* first bit of iSCSI PDU header */
234*14b24e2bSVaishali Kulkarni #define ISCSI_COMMON_HDR_RSRV_SHIFT          7
235*14b24e2bSVaishali Kulkarni 	__le32 hdr_second_dword;
236*14b24e2bSVaishali Kulkarni #define ISCSI_COMMON_HDR_DATA_SEG_LEN_MASK   0xFFFFFF /* DataSegmentLength */
237*14b24e2bSVaishali Kulkarni #define ISCSI_COMMON_HDR_DATA_SEG_LEN_SHIFT  0
238*14b24e2bSVaishali Kulkarni #define ISCSI_COMMON_HDR_TOTAL_AHS_LEN_MASK  0xFF /* TotalAHSLength */
239*14b24e2bSVaishali Kulkarni #define ISCSI_COMMON_HDR_TOTAL_AHS_LEN_SHIFT 24
240*14b24e2bSVaishali Kulkarni 	struct regpair lun_reserved /* Bytes 8..15 : LUN (if PDU contains a LUN field) or reserved */;
241*14b24e2bSVaishali Kulkarni 	__le32 itt /* ITT - common to all headers */;
242*14b24e2bSVaishali Kulkarni 	__le32 ttt /* bytes 20 to 23 - common ttt to various PDU headers */;
243*14b24e2bSVaishali Kulkarni 	__le32 cmdstat_sn /* bytes 24 to 27 - common cmd_sn (initiator) or stat_sn (target) to various PDU headers */;
244*14b24e2bSVaishali Kulkarni 	__le32 exp_statcmd_sn /* bytes 28 to 31 - common expected stat_sn (initiator) or cmd_sn (target) to various PDU headers */;
245*14b24e2bSVaishali Kulkarni 	__le32 max_cmd_sn /* bytes 32 to 35 - common max cmd_sn to various PDU headers */;
246*14b24e2bSVaishali Kulkarni 	__le32 data[3] /* bytes 36 to 47 */;
247*14b24e2bSVaishali Kulkarni };
248*14b24e2bSVaishali Kulkarni 
249*14b24e2bSVaishali Kulkarni 
250*14b24e2bSVaishali Kulkarni /*
251*14b24e2bSVaishali Kulkarni  * ISCSI connection offload params passed by driver to FW in ISCSI offload ramrod
252*14b24e2bSVaishali Kulkarni  */
253*14b24e2bSVaishali Kulkarni struct iscsi_conn_offload_params
254*14b24e2bSVaishali Kulkarni {
255*14b24e2bSVaishali Kulkarni 	struct regpair sq_pbl_addr /* PBL SQ pointer */;
256*14b24e2bSVaishali Kulkarni 	struct regpair r2tq_pbl_addr /* PBL R2TQ pointer */;
257*14b24e2bSVaishali Kulkarni 	struct regpair xhq_pbl_addr /* PBL XHQ pointer */;
258*14b24e2bSVaishali Kulkarni 	struct regpair uhq_pbl_addr /* PBL UHQ pointer */;
259*14b24e2bSVaishali Kulkarni 	__le32 initial_ack /* Initial ack, received from TCP */;
260*14b24e2bSVaishali Kulkarni 	__le16 physical_q0 /* Physical QM queue to be tied to logical Q0 */;
261*14b24e2bSVaishali Kulkarni 	__le16 physical_q1 /* Physical QM queue to be tied to logical Q1 */;
262*14b24e2bSVaishali Kulkarni 	u8 flags;
263*14b24e2bSVaishali Kulkarni #define ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B_MASK   0x1 /* TCP connect/terminate option. 0 - TCP on host (option-1); 1 - TCP on chip (option-2). */
264*14b24e2bSVaishali Kulkarni #define ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B_SHIFT  0
265*14b24e2bSVaishali Kulkarni #define ISCSI_CONN_OFFLOAD_PARAMS_TARGET_MODE_MASK      0x1 /* iSCSI connect mode: 0-iSCSI Initiator, 1-iSCSI Target */
266*14b24e2bSVaishali Kulkarni #define ISCSI_CONN_OFFLOAD_PARAMS_TARGET_MODE_SHIFT     1
267*14b24e2bSVaishali Kulkarni #define ISCSI_CONN_OFFLOAD_PARAMS_RESTRICTED_MODE_MASK  0x1 /* Restricted mode: 0 - un-restricted (deviating from the RFC), 1 - restricted (according to the RFC) */
268*14b24e2bSVaishali Kulkarni #define ISCSI_CONN_OFFLOAD_PARAMS_RESTRICTED_MODE_SHIFT 2
269*14b24e2bSVaishali Kulkarni #define ISCSI_CONN_OFFLOAD_PARAMS_RESERVED1_MASK        0x1F /* reserved */
270*14b24e2bSVaishali Kulkarni #define ISCSI_CONN_OFFLOAD_PARAMS_RESERVED1_SHIFT       3
271*14b24e2bSVaishali Kulkarni 	u8 pbl_page_size_log /* Page size with PBEs log; Page Size = 2^(page_size_log+12) */;
272*14b24e2bSVaishali Kulkarni 	u8 pbe_page_size_log /* PBE page size with log; Page Size = 2^(page_size_log+12) */;
273*14b24e2bSVaishali Kulkarni 	u8 default_cq /* Default CQ used to write unsolicited data */;
274*14b24e2bSVaishali Kulkarni 	__le32 stat_sn /* StatSn for Target Mode only: the first Login Response StatSn value for Target mode */;
275*14b24e2bSVaishali Kulkarni };
276*14b24e2bSVaishali Kulkarni 
277*14b24e2bSVaishali Kulkarni 
278*14b24e2bSVaishali Kulkarni /*
279*14b24e2bSVaishali Kulkarni  * spe message header
280*14b24e2bSVaishali Kulkarni  */
281*14b24e2bSVaishali Kulkarni struct iscsi_slow_path_hdr
282*14b24e2bSVaishali Kulkarni {
283*14b24e2bSVaishali Kulkarni 	u8 op_code /* iscsi bus-drv message opcode */;
284*14b24e2bSVaishali Kulkarni 	u8 flags;
285*14b24e2bSVaishali Kulkarni #define ISCSI_SLOW_PATH_HDR_RESERVED0_MASK   0xF
286*14b24e2bSVaishali Kulkarni #define ISCSI_SLOW_PATH_HDR_RESERVED0_SHIFT  0
287*14b24e2bSVaishali Kulkarni #define ISCSI_SLOW_PATH_HDR_LAYER_CODE_MASK  0x7 /* protocol layer (L2,L3,L4,L5) */
288*14b24e2bSVaishali Kulkarni #define ISCSI_SLOW_PATH_HDR_LAYER_CODE_SHIFT 4
289*14b24e2bSVaishali Kulkarni #define ISCSI_SLOW_PATH_HDR_RESERVED1_MASK   0x1
290*14b24e2bSVaishali Kulkarni #define ISCSI_SLOW_PATH_HDR_RESERVED1_SHIFT  7
291*14b24e2bSVaishali Kulkarni };
292*14b24e2bSVaishali Kulkarni 
293*14b24e2bSVaishali Kulkarni /*
294*14b24e2bSVaishali Kulkarni  * ISCSI connection update params passed by driver to FW in ISCSI update ramrod
295*14b24e2bSVaishali Kulkarni  */
296*14b24e2bSVaishali Kulkarni struct iscsi_conn_update_ramrod_params
297*14b24e2bSVaishali Kulkarni {
298*14b24e2bSVaishali Kulkarni 	struct iscsi_slow_path_hdr hdr /* spe message header. */;
299*14b24e2bSVaishali Kulkarni 	__le16 conn_id /* ISCSI Connection ID. (MOTI_COHEN : draft for DrvSim sake) */;
300*14b24e2bSVaishali Kulkarni 	__le32 fw_cid /* Context ID (cid) of the connection. (MOTI_COHEN : draft for DrvSim sake) */;
301*14b24e2bSVaishali Kulkarni 	u8 flags;
302*14b24e2bSVaishali Kulkarni #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_HD_EN_MASK           0x1 /* Is header digest enabled */
303*14b24e2bSVaishali Kulkarni #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_HD_EN_SHIFT          0
304*14b24e2bSVaishali Kulkarni #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DD_EN_MASK           0x1 /* Is data digest enabled */
305*14b24e2bSVaishali Kulkarni #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DD_EN_SHIFT          1
306*14b24e2bSVaishali Kulkarni #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_INITIAL_R2T_MASK     0x1 /* Initial R2T */
307*14b24e2bSVaishali Kulkarni #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_INITIAL_R2T_SHIFT    2
308*14b24e2bSVaishali Kulkarni #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_IMMEDIATE_DATA_MASK  0x1 /* Immediate data */
309*14b24e2bSVaishali Kulkarni #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_IMMEDIATE_DATA_SHIFT 3
310*14b24e2bSVaishali Kulkarni #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DIF_BLOCK_SIZE_MASK  0x1 /* 0 - 512B, 1 - 4K */
311*14b24e2bSVaishali Kulkarni #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DIF_BLOCK_SIZE_SHIFT 4
312*14b24e2bSVaishali Kulkarni #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DIF_ON_HOST_EN_MASK  0x1 /* 0 - no DIF, 1 - could be enabled per task */
313*14b24e2bSVaishali Kulkarni #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DIF_ON_HOST_EN_SHIFT 5
314*14b24e2bSVaishali Kulkarni #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_RESERVED1_MASK       0x3
315*14b24e2bSVaishali Kulkarni #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_RESERVED1_SHIFT      6
316*14b24e2bSVaishali Kulkarni 	u8 reserved0[3];
317*14b24e2bSVaishali Kulkarni 	__le32 max_seq_size /* Maximum sequence size. Valid for TX and RX */;
318*14b24e2bSVaishali Kulkarni 	__le32 max_send_pdu_length /* Maximum PDU size. Valid for the TX */;
319*14b24e2bSVaishali Kulkarni 	__le32 max_recv_pdu_length /* Maximum PDU size. Valid for the RX */;
320*14b24e2bSVaishali Kulkarni 	__le32 first_seq_length /* Initial sequence length */;
321*14b24e2bSVaishali Kulkarni 	__le32 exp_stat_sn /* ExpStatSn - Option1 Only */;
322*14b24e2bSVaishali Kulkarni };
323*14b24e2bSVaishali Kulkarni 
324*14b24e2bSVaishali Kulkarni 
325*14b24e2bSVaishali Kulkarni /*
326*14b24e2bSVaishali Kulkarni  * iSCSI Command PDU header with Extended CDB (Initiator Mode)
327*14b24e2bSVaishali Kulkarni  */
328*14b24e2bSVaishali Kulkarni struct iscsi_ext_cdb_cmd_hdr
329*14b24e2bSVaishali Kulkarni {
330*14b24e2bSVaishali Kulkarni 	__le16 reserved1 /* reserved */;
331*14b24e2bSVaishali Kulkarni 	u8 flags_attr;
332*14b24e2bSVaishali Kulkarni #define ISCSI_EXT_CDB_CMD_HDR_ATTR_MASK          0x7 /* attributes */
333*14b24e2bSVaishali Kulkarni #define ISCSI_EXT_CDB_CMD_HDR_ATTR_SHIFT         0
334*14b24e2bSVaishali Kulkarni #define ISCSI_EXT_CDB_CMD_HDR_RSRV_MASK          0x3 /* reserved */
335*14b24e2bSVaishali Kulkarni #define ISCSI_EXT_CDB_CMD_HDR_RSRV_SHIFT         3
336*14b24e2bSVaishali Kulkarni #define ISCSI_EXT_CDB_CMD_HDR_WRITE_MASK         0x1 /* write */
337*14b24e2bSVaishali Kulkarni #define ISCSI_EXT_CDB_CMD_HDR_WRITE_SHIFT        5
338*14b24e2bSVaishali Kulkarni #define ISCSI_EXT_CDB_CMD_HDR_READ_MASK          0x1 /* read */
339*14b24e2bSVaishali Kulkarni #define ISCSI_EXT_CDB_CMD_HDR_READ_SHIFT         6
340*14b24e2bSVaishali Kulkarni #define ISCSI_EXT_CDB_CMD_HDR_FINAL_MASK         0x1 /* final */
341*14b24e2bSVaishali Kulkarni #define ISCSI_EXT_CDB_CMD_HDR_FINAL_SHIFT        7
342*14b24e2bSVaishali Kulkarni 	u8 opcode /* opcode. [constant, initialized] */;
343*14b24e2bSVaishali Kulkarni 	__le32 hdr_second_dword;
344*14b24e2bSVaishali Kulkarni #define ISCSI_EXT_CDB_CMD_HDR_DATA_SEG_LEN_MASK  0xFFFFFF /* DataSegmentLength */
345*14b24e2bSVaishali Kulkarni #define ISCSI_EXT_CDB_CMD_HDR_DATA_SEG_LEN_SHIFT 0
346*14b24e2bSVaishali Kulkarni #define ISCSI_EXT_CDB_CMD_HDR_CDB_SIZE_MASK      0xFF /* The Extended CDB size in bytes. Maximum Extended CDB size supported is CDB 64B. */
347*14b24e2bSVaishali Kulkarni #define ISCSI_EXT_CDB_CMD_HDR_CDB_SIZE_SHIFT     24
348*14b24e2bSVaishali Kulkarni 	struct regpair lun /* Logical Unit Number. [constant, initialized] */;
349*14b24e2bSVaishali Kulkarni 	__le32 itt /* Initiator Task Tag (only 2 bytes are significant). [constant, initialized] */;
350*14b24e2bSVaishali Kulkarni 	__le32 expected_transfer_length /* Expected Data Transfer Length (only 3 bytes are significant) */;
351*14b24e2bSVaishali Kulkarni 	__le32 cmd_sn /* CmdSn. [constant, initialized] */;
352*14b24e2bSVaishali Kulkarni 	__le32 exp_stat_sn /* various fields for middle-path PDU. [constant, initialized] */;
353*14b24e2bSVaishali Kulkarni 	struct scsi_sge cdb_sge /* Extended CDBs dedicated SGE */;
354*14b24e2bSVaishali Kulkarni };
355*14b24e2bSVaishali Kulkarni 
356*14b24e2bSVaishali Kulkarni /*
357*14b24e2bSVaishali Kulkarni  * iSCSI login request PDU header
358*14b24e2bSVaishali Kulkarni  */
359*14b24e2bSVaishali Kulkarni struct iscsi_login_req_hdr
360*14b24e2bSVaishali Kulkarni {
361*14b24e2bSVaishali Kulkarni 	u8 version_min /* Version-min */;
362*14b24e2bSVaishali Kulkarni 	u8 version_max /* Version-max */;
363*14b24e2bSVaishali Kulkarni 	u8 flags_attr;
364*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_REQ_HDR_NSG_MASK            0x3 /* Next Stage (NSG) */
365*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_REQ_HDR_NSG_SHIFT           0
366*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_REQ_HDR_CSG_MASK            0x3 /* Current stage (CSG) */
367*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_REQ_HDR_CSG_SHIFT           2
368*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_REQ_HDR_RSRV_MASK           0x3 /* reserved */
369*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_REQ_HDR_RSRV_SHIFT          4
370*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_REQ_HDR_C_MASK              0x1 /* C (Continue) bit */
371*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_REQ_HDR_C_SHIFT             6
372*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_REQ_HDR_T_MASK              0x1 /* T (Transit) bit */
373*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_REQ_HDR_T_SHIFT             7
374*14b24e2bSVaishali Kulkarni 	u8 opcode /* opcode. [constant, initialized] */;
375*14b24e2bSVaishali Kulkarni 	__le32 hdr_second_dword;
376*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_REQ_HDR_DATA_SEG_LEN_MASK   0xFFFFFF /* DataSegmentLength */
377*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_REQ_HDR_DATA_SEG_LEN_SHIFT  0
378*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_REQ_HDR_TOTAL_AHS_LEN_MASK  0xFF /* TotalAHSLength */
379*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_REQ_HDR_TOTAL_AHS_LEN_SHIFT 24
380*14b24e2bSVaishali Kulkarni 	__le32 isid_tabc /* Session identifier high double word [constant, initialized] */;
381*14b24e2bSVaishali Kulkarni 	__le16 tsih /* TSIH */;
382*14b24e2bSVaishali Kulkarni 	__le16 isid_d /* Session identifier low word [constant, initialized] */;
383*14b24e2bSVaishali Kulkarni 	__le32 itt /* Initiator Task Tag (only 2 bytes are significant). [constant, initialized] */;
384*14b24e2bSVaishali Kulkarni 	__le16 reserved1;
385*14b24e2bSVaishali Kulkarni 	__le16 cid /* Unique Connection ID within the session [constant, initialized] */;
386*14b24e2bSVaishali Kulkarni 	__le32 cmd_sn /* CmdSn. [constant, initialized] */;
387*14b24e2bSVaishali Kulkarni 	__le32 exp_stat_sn /* various fields for middle-path PDU. [constant, initialized] */;
388*14b24e2bSVaishali Kulkarni 	__le32 reserved2[4];
389*14b24e2bSVaishali Kulkarni };
390*14b24e2bSVaishali Kulkarni 
391*14b24e2bSVaishali Kulkarni /*
392*14b24e2bSVaishali Kulkarni  * iSCSI logout request PDU header
393*14b24e2bSVaishali Kulkarni  */
394*14b24e2bSVaishali Kulkarni struct iscsi_logout_req_hdr
395*14b24e2bSVaishali Kulkarni {
396*14b24e2bSVaishali Kulkarni 	__le16 reserved0 /* reserved */;
397*14b24e2bSVaishali Kulkarni 	u8 reason_code /* Reason Code */;
398*14b24e2bSVaishali Kulkarni 	u8 opcode /* opcode. [constant, initialized] */;
399*14b24e2bSVaishali Kulkarni 	__le32 reserved1;
400*14b24e2bSVaishali Kulkarni 	__le32 reserved2[2] /* Reserved */;
401*14b24e2bSVaishali Kulkarni 	__le32 itt /* Initiator Task Tag (only 2 bytes are significant). [constant, initialized] */;
402*14b24e2bSVaishali Kulkarni 	__le16 reserved3 /* Reserved */;
403*14b24e2bSVaishali Kulkarni 	__le16 cid /* Unique Connection ID within the session [constant, initialized] */;
404*14b24e2bSVaishali Kulkarni 	__le32 cmd_sn /* CmdSn. [constant, initialized] */;
405*14b24e2bSVaishali Kulkarni 	__le32 exp_stat_sn /* various fields for middle-path PDU. [constant, initialized] */;
406*14b24e2bSVaishali Kulkarni 	__le32 reserved4[4] /* Reserved */;
407*14b24e2bSVaishali Kulkarni };
408*14b24e2bSVaishali Kulkarni 
409*14b24e2bSVaishali Kulkarni /*
410*14b24e2bSVaishali Kulkarni  * iSCSI Data-out PDU header
411*14b24e2bSVaishali Kulkarni  */
412*14b24e2bSVaishali Kulkarni struct iscsi_data_out_hdr
413*14b24e2bSVaishali Kulkarni {
414*14b24e2bSVaishali Kulkarni 	__le16 reserved1 /* reserved */;
415*14b24e2bSVaishali Kulkarni 	u8 flags_attr;
416*14b24e2bSVaishali Kulkarni #define ISCSI_DATA_OUT_HDR_RSRV_MASK   0x7F /* reserved */
417*14b24e2bSVaishali Kulkarni #define ISCSI_DATA_OUT_HDR_RSRV_SHIFT  0
418*14b24e2bSVaishali Kulkarni #define ISCSI_DATA_OUT_HDR_FINAL_MASK  0x1 /* final */
419*14b24e2bSVaishali Kulkarni #define ISCSI_DATA_OUT_HDR_FINAL_SHIFT 7
420*14b24e2bSVaishali Kulkarni 	u8 opcode /* opcode */;
421*14b24e2bSVaishali Kulkarni 	__le32 reserved2 /* reserved */;
422*14b24e2bSVaishali Kulkarni 	struct regpair lun /* Logical Unit Number */;
423*14b24e2bSVaishali Kulkarni 	__le32 itt /* Initiator Task Tag (only 2 bytes are significant) */;
424*14b24e2bSVaishali Kulkarni 	__le32 ttt /* Target Transfer Tag (from R2T) */;
425*14b24e2bSVaishali Kulkarni 	__le32 reserved3 /* resrved */;
426*14b24e2bSVaishali Kulkarni 	__le32 exp_stat_sn /* Expected StatSn */;
427*14b24e2bSVaishali Kulkarni 	__le32 reserved4 /* resrved */;
428*14b24e2bSVaishali Kulkarni 	__le32 data_sn /* DataSN - PDU index in sequnece */;
429*14b24e2bSVaishali Kulkarni 	__le32 buffer_offset /* Buffer Offset - offset in task */;
430*14b24e2bSVaishali Kulkarni 	__le32 reserved5 /* resrved */;
431*14b24e2bSVaishali Kulkarni };
432*14b24e2bSVaishali Kulkarni 
433*14b24e2bSVaishali Kulkarni /*
434*14b24e2bSVaishali Kulkarni  * iSCSI Data-in PDU header
435*14b24e2bSVaishali Kulkarni  */
436*14b24e2bSVaishali Kulkarni struct iscsi_data_in_hdr
437*14b24e2bSVaishali Kulkarni {
438*14b24e2bSVaishali Kulkarni 	u8 status_rsvd /* Status or reserved */;
439*14b24e2bSVaishali Kulkarni 	u8 reserved1 /* reserved */;
440*14b24e2bSVaishali Kulkarni 	u8 flags;
441*14b24e2bSVaishali Kulkarni #define ISCSI_DATA_IN_HDR_STATUS_MASK     0x1 /* Status */
442*14b24e2bSVaishali Kulkarni #define ISCSI_DATA_IN_HDR_STATUS_SHIFT    0
443*14b24e2bSVaishali Kulkarni #define ISCSI_DATA_IN_HDR_UNDERFLOW_MASK  0x1 /* Residual Underflow */
444*14b24e2bSVaishali Kulkarni #define ISCSI_DATA_IN_HDR_UNDERFLOW_SHIFT 1
445*14b24e2bSVaishali Kulkarni #define ISCSI_DATA_IN_HDR_OVERFLOW_MASK   0x1 /* Residual Overflow */
446*14b24e2bSVaishali Kulkarni #define ISCSI_DATA_IN_HDR_OVERFLOW_SHIFT  2
447*14b24e2bSVaishali Kulkarni #define ISCSI_DATA_IN_HDR_RSRV_MASK       0x7 /* reserved - 0 */
448*14b24e2bSVaishali Kulkarni #define ISCSI_DATA_IN_HDR_RSRV_SHIFT      3
449*14b24e2bSVaishali Kulkarni #define ISCSI_DATA_IN_HDR_ACK_MASK        0x1 /* Acknowledge */
450*14b24e2bSVaishali Kulkarni #define ISCSI_DATA_IN_HDR_ACK_SHIFT       6
451*14b24e2bSVaishali Kulkarni #define ISCSI_DATA_IN_HDR_FINAL_MASK      0x1 /* final */
452*14b24e2bSVaishali Kulkarni #define ISCSI_DATA_IN_HDR_FINAL_SHIFT     7
453*14b24e2bSVaishali Kulkarni 	u8 opcode /* opcode */;
454*14b24e2bSVaishali Kulkarni 	__le32 reserved2 /* reserved */;
455*14b24e2bSVaishali Kulkarni 	struct regpair lun /* Logical Unit Number */;
456*14b24e2bSVaishali Kulkarni 	__le32 itt /* Initiator Task Tag (only 2 bytes are significant) */;
457*14b24e2bSVaishali Kulkarni 	__le32 ttt /* Target Transfer Tag (from R2T) */;
458*14b24e2bSVaishali Kulkarni 	__le32 stat_sn /* StatSN or reserved */;
459*14b24e2bSVaishali Kulkarni 	__le32 exp_cmd_sn /* Expected CmdSn */;
460*14b24e2bSVaishali Kulkarni 	__le32 max_cmd_sn /* MaxCmdSn */;
461*14b24e2bSVaishali Kulkarni 	__le32 data_sn /* DataSN - PDU index in sequnece */;
462*14b24e2bSVaishali Kulkarni 	__le32 buffer_offset /* Buffer Offset - offset in task */;
463*14b24e2bSVaishali Kulkarni 	__le32 residual_count /* Residual Count */;
464*14b24e2bSVaishali Kulkarni };
465*14b24e2bSVaishali Kulkarni 
466*14b24e2bSVaishali Kulkarni /*
467*14b24e2bSVaishali Kulkarni  * iSCSI R2T PDU header
468*14b24e2bSVaishali Kulkarni  */
469*14b24e2bSVaishali Kulkarni struct iscsi_r2t_hdr
470*14b24e2bSVaishali Kulkarni {
471*14b24e2bSVaishali Kulkarni 	u8 reserved0[3] /* reserved */;
472*14b24e2bSVaishali Kulkarni 	u8 opcode /* opcode */;
473*14b24e2bSVaishali Kulkarni 	__le32 reserved2 /* reserved */;
474*14b24e2bSVaishali Kulkarni 	struct regpair lun /* Logical Unit Number */;
475*14b24e2bSVaishali Kulkarni 	__le32 itt /* Initiator Task Tag */;
476*14b24e2bSVaishali Kulkarni 	__le32 ttt /* Target Transfer Tag */;
477*14b24e2bSVaishali Kulkarni 	__le32 stat_sn /* stat sn */;
478*14b24e2bSVaishali Kulkarni 	__le32 exp_cmd_sn /* Expected CmdSn */;
479*14b24e2bSVaishali Kulkarni 	__le32 max_cmd_sn /* Max CmdSn */;
480*14b24e2bSVaishali Kulkarni 	__le32 r2t_sn /* DataSN - PDU index in sequnece */;
481*14b24e2bSVaishali Kulkarni 	__le32 buffer_offset /* Buffer Offset - offset in task */;
482*14b24e2bSVaishali Kulkarni 	__le32 desired_data_trns_len /* Desired data trnsfer len */;
483*14b24e2bSVaishali Kulkarni };
484*14b24e2bSVaishali Kulkarni 
485*14b24e2bSVaishali Kulkarni /*
486*14b24e2bSVaishali Kulkarni  * iSCSI NOP-out PDU header
487*14b24e2bSVaishali Kulkarni  */
488*14b24e2bSVaishali Kulkarni struct iscsi_nop_out_hdr
489*14b24e2bSVaishali Kulkarni {
490*14b24e2bSVaishali Kulkarni 	__le16 reserved1 /* reserved */;
491*14b24e2bSVaishali Kulkarni 	u8 flags_attr;
492*14b24e2bSVaishali Kulkarni #define ISCSI_NOP_OUT_HDR_RSRV_MASK    0x7F /* reserved */
493*14b24e2bSVaishali Kulkarni #define ISCSI_NOP_OUT_HDR_RSRV_SHIFT   0
494*14b24e2bSVaishali Kulkarni #define ISCSI_NOP_OUT_HDR_CONST1_MASK  0x1 /* const1 */
495*14b24e2bSVaishali Kulkarni #define ISCSI_NOP_OUT_HDR_CONST1_SHIFT 7
496*14b24e2bSVaishali Kulkarni 	u8 opcode /* opcode */;
497*14b24e2bSVaishali Kulkarni 	__le32 reserved2 /* reserved */;
498*14b24e2bSVaishali Kulkarni 	struct regpair lun /* Logical Unit Number */;
499*14b24e2bSVaishali Kulkarni 	__le32 itt /* Initiator Task Tag (only 2 bytes are significant) */;
500*14b24e2bSVaishali Kulkarni 	__le32 ttt /* Target Transfer Tag (from R2T) */;
501*14b24e2bSVaishali Kulkarni 	__le32 cmd_sn /* CmdSN */;
502*14b24e2bSVaishali Kulkarni 	__le32 exp_stat_sn /* Expected StatSn */;
503*14b24e2bSVaishali Kulkarni 	__le32 reserved3 /* reserved */;
504*14b24e2bSVaishali Kulkarni 	__le32 reserved4 /* reserved */;
505*14b24e2bSVaishali Kulkarni 	__le32 reserved5 /* reserved */;
506*14b24e2bSVaishali Kulkarni 	__le32 reserved6 /* reserved */;
507*14b24e2bSVaishali Kulkarni };
508*14b24e2bSVaishali Kulkarni 
509*14b24e2bSVaishali Kulkarni /*
510*14b24e2bSVaishali Kulkarni  * iSCSI NOP-in PDU header
511*14b24e2bSVaishali Kulkarni  */
512*14b24e2bSVaishali Kulkarni struct iscsi_nop_in_hdr
513*14b24e2bSVaishali Kulkarni {
514*14b24e2bSVaishali Kulkarni 	__le16 reserved0 /* reserved */;
515*14b24e2bSVaishali Kulkarni 	u8 flags_attr;
516*14b24e2bSVaishali Kulkarni #define ISCSI_NOP_IN_HDR_RSRV_MASK           0x7F /* reserved */
517*14b24e2bSVaishali Kulkarni #define ISCSI_NOP_IN_HDR_RSRV_SHIFT          0
518*14b24e2bSVaishali Kulkarni #define ISCSI_NOP_IN_HDR_CONST1_MASK         0x1 /* const1 */
519*14b24e2bSVaishali Kulkarni #define ISCSI_NOP_IN_HDR_CONST1_SHIFT        7
520*14b24e2bSVaishali Kulkarni 	u8 opcode /* opcode */;
521*14b24e2bSVaishali Kulkarni 	__le32 hdr_second_dword;
522*14b24e2bSVaishali Kulkarni #define ISCSI_NOP_IN_HDR_DATA_SEG_LEN_MASK   0xFFFFFF /* DataSegmentLength */
523*14b24e2bSVaishali Kulkarni #define ISCSI_NOP_IN_HDR_DATA_SEG_LEN_SHIFT  0
524*14b24e2bSVaishali Kulkarni #define ISCSI_NOP_IN_HDR_TOTAL_AHS_LEN_MASK  0xFF /* TotalAHSLength */
525*14b24e2bSVaishali Kulkarni #define ISCSI_NOP_IN_HDR_TOTAL_AHS_LEN_SHIFT 24
526*14b24e2bSVaishali Kulkarni 	struct regpair lun /* Logical Unit Number */;
527*14b24e2bSVaishali Kulkarni 	__le32 itt /* Initiator Task Tag (only 2 bytes are significant) */;
528*14b24e2bSVaishali Kulkarni 	__le32 ttt /* Target Transfer Tag */;
529*14b24e2bSVaishali Kulkarni 	__le32 stat_sn /* stat_sn */;
530*14b24e2bSVaishali Kulkarni 	__le32 exp_cmd_sn /* exp_cmd_sn */;
531*14b24e2bSVaishali Kulkarni 	__le32 max_cmd_sn /* max_cmd_sn */;
532*14b24e2bSVaishali Kulkarni 	__le32 reserved5 /* reserved */;
533*14b24e2bSVaishali Kulkarni 	__le32 reserved6 /* reserved */;
534*14b24e2bSVaishali Kulkarni 	__le32 reserved7 /* reserved */;
535*14b24e2bSVaishali Kulkarni };
536*14b24e2bSVaishali Kulkarni 
537*14b24e2bSVaishali Kulkarni /*
538*14b24e2bSVaishali Kulkarni  * iSCSI Login Response PDU header
539*14b24e2bSVaishali Kulkarni  */
540*14b24e2bSVaishali Kulkarni struct iscsi_login_response_hdr
541*14b24e2bSVaishali Kulkarni {
542*14b24e2bSVaishali Kulkarni 	u8 version_active /* Version-active */;
543*14b24e2bSVaishali Kulkarni 	u8 version_max /* Version-max */;
544*14b24e2bSVaishali Kulkarni 	u8 flags_attr;
545*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_RESPONSE_HDR_NSG_MASK            0x3 /* Next Stage (NSG) */
546*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_RESPONSE_HDR_NSG_SHIFT           0
547*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_RESPONSE_HDR_CSG_MASK            0x3 /* Current stage (CSG) */
548*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_RESPONSE_HDR_CSG_SHIFT           2
549*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_RESPONSE_HDR_RSRV_MASK           0x3 /* reserved */
550*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_RESPONSE_HDR_RSRV_SHIFT          4
551*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_RESPONSE_HDR_C_MASK              0x1 /* C (Continue) bit */
552*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_RESPONSE_HDR_C_SHIFT             6
553*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_RESPONSE_HDR_T_MASK              0x1 /* T (Transit) bit */
554*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_RESPONSE_HDR_T_SHIFT             7
555*14b24e2bSVaishali Kulkarni 	u8 opcode /* opcode. [constant, initialized] */;
556*14b24e2bSVaishali Kulkarni 	__le32 hdr_second_dword;
557*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK   0xFFFFFF /* DataSegmentLength */
558*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_SHIFT  0
559*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_RESPONSE_HDR_TOTAL_AHS_LEN_MASK  0xFF /* TotalAHSLength */
560*14b24e2bSVaishali Kulkarni #define ISCSI_LOGIN_RESPONSE_HDR_TOTAL_AHS_LEN_SHIFT 24
561*14b24e2bSVaishali Kulkarni 	__le32 isid_tabc /* Session identifier high double word [constant, initialized] */;
562*14b24e2bSVaishali Kulkarni 	__le16 tsih /* TSIH */;
563*14b24e2bSVaishali Kulkarni 	__le16 isid_d /* Session identifier low word [constant, initialized] */;
564*14b24e2bSVaishali Kulkarni 	__le32 itt /* Initiator Task Tag (only 2 bytes are significant). [constant, initialized] */;
565*14b24e2bSVaishali Kulkarni 	__le32 reserved1;
566*14b24e2bSVaishali Kulkarni 	__le32 stat_sn /* CmdSn. [constant, initialized] */;
567*14b24e2bSVaishali Kulkarni 	__le32 exp_cmd_sn /* various fields for middle-path PDU. [constant, initialized] */;
568*14b24e2bSVaishali Kulkarni 	__le32 max_cmd_sn /* max_cmd_sn */;
569*14b24e2bSVaishali Kulkarni 	__le16 reserved2;
570*14b24e2bSVaishali Kulkarni 	u8 status_detail /* status_detail */;
571*14b24e2bSVaishali Kulkarni 	u8 status_class /* status_class */;
572*14b24e2bSVaishali Kulkarni 	__le32 reserved4[2];
573*14b24e2bSVaishali Kulkarni };
574*14b24e2bSVaishali Kulkarni 
575*14b24e2bSVaishali Kulkarni /*
576*14b24e2bSVaishali Kulkarni  * iSCSI Logout Response PDU header
577*14b24e2bSVaishali Kulkarni  */
578*14b24e2bSVaishali Kulkarni struct iscsi_logout_response_hdr
579*14b24e2bSVaishali Kulkarni {
580*14b24e2bSVaishali Kulkarni 	u8 reserved1 /* reserved */;
581*14b24e2bSVaishali Kulkarni 	u8 response /* response */;
582*14b24e2bSVaishali Kulkarni 	u8 flags /* flags and attributes */;
583*14b24e2bSVaishali Kulkarni 	u8 opcode /* opcode. [constant, initialized] */;
584*14b24e2bSVaishali Kulkarni 	__le32 hdr_second_dword;
585*14b24e2bSVaishali Kulkarni #define ISCSI_LOGOUT_RESPONSE_HDR_DATA_SEG_LEN_MASK   0xFFFFFF /* DataSegmentLength */
586*14b24e2bSVaishali Kulkarni #define ISCSI_LOGOUT_RESPONSE_HDR_DATA_SEG_LEN_SHIFT  0
587*14b24e2bSVaishali Kulkarni #define ISCSI_LOGOUT_RESPONSE_HDR_TOTAL_AHS_LEN_MASK  0xFF /* TotalAHSLength */
588*14b24e2bSVaishali Kulkarni #define ISCSI_LOGOUT_RESPONSE_HDR_TOTAL_AHS_LEN_SHIFT 24
589*14b24e2bSVaishali Kulkarni 	__le32 reserved2[2] /* Reserved */;
590*14b24e2bSVaishali Kulkarni 	__le32 itt /* Initiator Task Tag (only 2 bytes are significant). [constant, initialized] */;
591*14b24e2bSVaishali Kulkarni 	__le32 reserved3 /* Reserved */;
592*14b24e2bSVaishali Kulkarni 	__le32 stat_sn /* CmdSN */;
593*14b24e2bSVaishali Kulkarni 	__le32 exp_cmd_sn /* Expected StatSn */;
594*14b24e2bSVaishali Kulkarni 	__le32 max_cmd_sn /* CmdSN */;
595*14b24e2bSVaishali Kulkarni 	__le32 reserved4 /* Reserved */;
596*14b24e2bSVaishali Kulkarni 	__le16 time_2_retain /* Time to Retain  */;
597*14b24e2bSVaishali Kulkarni 	__le16 time_2_wait /* Time to wait */;
598*14b24e2bSVaishali Kulkarni 	__le32 reserved5[1] /* Reserved */;
599*14b24e2bSVaishali Kulkarni };
600*14b24e2bSVaishali Kulkarni 
601*14b24e2bSVaishali Kulkarni /*
602*14b24e2bSVaishali Kulkarni  * iSCSI Text Request PDU header
603*14b24e2bSVaishali Kulkarni  */
604*14b24e2bSVaishali Kulkarni struct iscsi_text_request_hdr
605*14b24e2bSVaishali Kulkarni {
606*14b24e2bSVaishali Kulkarni 	__le16 reserved0 /* reserved */;
607*14b24e2bSVaishali Kulkarni 	u8 flags_attr;
608*14b24e2bSVaishali Kulkarni #define ISCSI_TEXT_REQUEST_HDR_RSRV_MASK           0x3F /* reserved */
609*14b24e2bSVaishali Kulkarni #define ISCSI_TEXT_REQUEST_HDR_RSRV_SHIFT          0
610*14b24e2bSVaishali Kulkarni #define ISCSI_TEXT_REQUEST_HDR_C_MASK              0x1 /* C (Continue) bit */
611*14b24e2bSVaishali Kulkarni #define ISCSI_TEXT_REQUEST_HDR_C_SHIFT             6
612*14b24e2bSVaishali Kulkarni #define ISCSI_TEXT_REQUEST_HDR_F_MASK              0x1 /* F (Final) bit */
613*14b24e2bSVaishali Kulkarni #define ISCSI_TEXT_REQUEST_HDR_F_SHIFT             7
614*14b24e2bSVaishali Kulkarni 	u8 opcode /* opcode. [constant, initialized] */;
615*14b24e2bSVaishali Kulkarni 	__le32 hdr_second_dword;
616*14b24e2bSVaishali Kulkarni #define ISCSI_TEXT_REQUEST_HDR_DATA_SEG_LEN_MASK   0xFFFFFF /* DataSegmentLength */
617*14b24e2bSVaishali Kulkarni #define ISCSI_TEXT_REQUEST_HDR_DATA_SEG_LEN_SHIFT  0
618*14b24e2bSVaishali Kulkarni #define ISCSI_TEXT_REQUEST_HDR_TOTAL_AHS_LEN_MASK  0xFF /* TotalAHSLength */
619*14b24e2bSVaishali Kulkarni #define ISCSI_TEXT_REQUEST_HDR_TOTAL_AHS_LEN_SHIFT 24
620*14b24e2bSVaishali Kulkarni 	struct regpair lun /* Logical Unit Number */;
621*14b24e2bSVaishali Kulkarni 	__le32 itt /* Initiator Task Tag (only 2 bytes are significant). [constant, initialized] */;
622*14b24e2bSVaishali Kulkarni 	__le32 ttt /* Referenced Task Tag or 0xffffffff */;
623*14b24e2bSVaishali Kulkarni 	__le32 cmd_sn /* cmd_sn */;
624*14b24e2bSVaishali Kulkarni 	__le32 exp_stat_sn /* exp_stat_sn */;
625*14b24e2bSVaishali Kulkarni 	__le32 reserved4[4] /* Reserved */;
626*14b24e2bSVaishali Kulkarni };
627*14b24e2bSVaishali Kulkarni 
628*14b24e2bSVaishali Kulkarni /*
629*14b24e2bSVaishali Kulkarni  * iSCSI Text Response PDU header
630*14b24e2bSVaishali Kulkarni  */
631*14b24e2bSVaishali Kulkarni struct iscsi_text_response_hdr
632*14b24e2bSVaishali Kulkarni {
633*14b24e2bSVaishali Kulkarni 	__le16 reserved1 /* reserved */;
634*14b24e2bSVaishali Kulkarni 	u8 flags;
635*14b24e2bSVaishali Kulkarni #define ISCSI_TEXT_RESPONSE_HDR_RSRV_MASK           0x3F /* reserved */
636*14b24e2bSVaishali Kulkarni #define ISCSI_TEXT_RESPONSE_HDR_RSRV_SHIFT          0
637*14b24e2bSVaishali Kulkarni #define ISCSI_TEXT_RESPONSE_HDR_C_MASK              0x1 /* C (Continue) bit */
638*14b24e2bSVaishali Kulkarni #define ISCSI_TEXT_RESPONSE_HDR_C_SHIFT             6
639*14b24e2bSVaishali Kulkarni #define ISCSI_TEXT_RESPONSE_HDR_F_MASK              0x1 /* F (Final) bit */
640*14b24e2bSVaishali Kulkarni #define ISCSI_TEXT_RESPONSE_HDR_F_SHIFT             7
641*14b24e2bSVaishali Kulkarni 	u8 opcode /* opcode. [constant, initialized] */;
642*14b24e2bSVaishali Kulkarni 	__le32 hdr_second_dword;
643*14b24e2bSVaishali Kulkarni #define ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_MASK   0xFFFFFF /* DataSegmentLength */
644*14b24e2bSVaishali Kulkarni #define ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_SHIFT  0
645*14b24e2bSVaishali Kulkarni #define ISCSI_TEXT_RESPONSE_HDR_TOTAL_AHS_LEN_MASK  0xFF /* TotalAHSLength */
646*14b24e2bSVaishali Kulkarni #define ISCSI_TEXT_RESPONSE_HDR_TOTAL_AHS_LEN_SHIFT 24
647*14b24e2bSVaishali Kulkarni 	struct regpair lun /* Logical Unit Number */;
648*14b24e2bSVaishali Kulkarni 	__le32 itt /* Initiator Task Tag (only 2 bytes are significant). [constant, initialized] */;
649*14b24e2bSVaishali Kulkarni 	__le32 ttt /* Target Task Tag */;
650*14b24e2bSVaishali Kulkarni 	__le32 stat_sn /* CmdSN */;
651*14b24e2bSVaishali Kulkarni 	__le32 exp_cmd_sn /* Expected StatSn */;
652*14b24e2bSVaishali Kulkarni 	__le32 max_cmd_sn /* CmdSN */;
653*14b24e2bSVaishali Kulkarni 	__le32 reserved4[3] /* Reserved */;
654*14b24e2bSVaishali Kulkarni };
655*14b24e2bSVaishali Kulkarni 
656*14b24e2bSVaishali Kulkarni /*
657*14b24e2bSVaishali Kulkarni  * iSCSI TMF Request PDU header
658*14b24e2bSVaishali Kulkarni  */
659*14b24e2bSVaishali Kulkarni struct iscsi_tmf_request_hdr
660*14b24e2bSVaishali Kulkarni {
661*14b24e2bSVaishali Kulkarni 	__le16 reserved0 /* reserved */;
662*14b24e2bSVaishali Kulkarni 	u8 function /* function */;
663*14b24e2bSVaishali Kulkarni 	u8 opcode /* opcode. [constant, initialized] */;
664*14b24e2bSVaishali Kulkarni 	__le32 hdr_second_dword;
665*14b24e2bSVaishali Kulkarni #define ISCSI_TMF_REQUEST_HDR_DATA_SEG_LEN_MASK   0xFFFFFF /* DataSegmentLength */
666*14b24e2bSVaishali Kulkarni #define ISCSI_TMF_REQUEST_HDR_DATA_SEG_LEN_SHIFT  0
667*14b24e2bSVaishali Kulkarni #define ISCSI_TMF_REQUEST_HDR_TOTAL_AHS_LEN_MASK  0xFF /* TotalAHSLength */
668*14b24e2bSVaishali Kulkarni #define ISCSI_TMF_REQUEST_HDR_TOTAL_AHS_LEN_SHIFT 24
669*14b24e2bSVaishali Kulkarni 	struct regpair lun /* Logical Unit Number */;
670*14b24e2bSVaishali Kulkarni 	__le32 itt /* Initiator Task Tag (only 2 bytes are significant). [constant, initialized] */;
671*14b24e2bSVaishali Kulkarni 	__le32 rtt /* Referenced Task Tag or 0xffffffff */;
672*14b24e2bSVaishali Kulkarni 	__le32 cmd_sn /* cmd_sn */;
673*14b24e2bSVaishali Kulkarni 	__le32 exp_stat_sn /* exp_stat_sn */;
674*14b24e2bSVaishali Kulkarni 	__le32 ref_cmd_sn /* ref_cmd_sn */;
675*14b24e2bSVaishali Kulkarni 	__le32 exp_data_sn /* exp_data_sn */;
676*14b24e2bSVaishali Kulkarni 	__le32 reserved4[2] /* Reserved */;
677*14b24e2bSVaishali Kulkarni };
678*14b24e2bSVaishali Kulkarni 
679*14b24e2bSVaishali Kulkarni struct iscsi_tmf_response_hdr
680*14b24e2bSVaishali Kulkarni {
681*14b24e2bSVaishali Kulkarni 	u8 reserved2 /* reserved2 */;
682*14b24e2bSVaishali Kulkarni 	u8 hdr_response /* Response field of ISCSI header for Responses / Reserved for Data-In */;
683*14b24e2bSVaishali Kulkarni 	u8 hdr_flags /* Flags field of ISCSI header */;
684*14b24e2bSVaishali Kulkarni 	u8 opcode /* opcode. [constant, initialized] */;
685*14b24e2bSVaishali Kulkarni 	__le32 hdr_second_dword;
686*14b24e2bSVaishali Kulkarni #define ISCSI_TMF_RESPONSE_HDR_DATA_SEG_LEN_MASK   0xFFFFFF /* DataSegmentLength */
687*14b24e2bSVaishali Kulkarni #define ISCSI_TMF_RESPONSE_HDR_DATA_SEG_LEN_SHIFT  0
688*14b24e2bSVaishali Kulkarni #define ISCSI_TMF_RESPONSE_HDR_TOTAL_AHS_LEN_MASK  0xFF /* TotalAHSLength */
689*14b24e2bSVaishali Kulkarni #define ISCSI_TMF_RESPONSE_HDR_TOTAL_AHS_LEN_SHIFT 24
690*14b24e2bSVaishali Kulkarni 	struct regpair reserved0;
691*14b24e2bSVaishali Kulkarni 	__le32 itt /* Initiator Task Tag (only 2 bytes are significant). [constant, initialized] */;
692*14b24e2bSVaishali Kulkarni 	__le32 reserved1 /* Reserved */;
693*14b24e2bSVaishali Kulkarni 	__le32 stat_sn /* stat_sn */;
694*14b24e2bSVaishali Kulkarni 	__le32 exp_cmd_sn /* exp_cmd_sn */;
695*14b24e2bSVaishali Kulkarni 	__le32 max_cmd_sn /* max_cmd_sn */;
696*14b24e2bSVaishali Kulkarni 	__le32 reserved4[3] /* Reserved */;
697*14b24e2bSVaishali Kulkarni };
698*14b24e2bSVaishali Kulkarni 
699*14b24e2bSVaishali Kulkarni /*
700*14b24e2bSVaishali Kulkarni  * iSCSI Response PDU header
701*14b24e2bSVaishali Kulkarni  */
702*14b24e2bSVaishali Kulkarni struct iscsi_response_hdr
703*14b24e2bSVaishali Kulkarni {
704*14b24e2bSVaishali Kulkarni 	u8 hdr_status /* Status field of ISCSI header */;
705*14b24e2bSVaishali Kulkarni 	u8 hdr_response /* Response field of ISCSI header for Responses / Reserved for Data-In */;
706*14b24e2bSVaishali Kulkarni 	u8 hdr_flags /* Flags field of ISCSI header */;
707*14b24e2bSVaishali Kulkarni 	u8 opcode /* opcode. [constant, initialized] */;
708*14b24e2bSVaishali Kulkarni 	__le32 hdr_second_dword;
709*14b24e2bSVaishali Kulkarni #define ISCSI_RESPONSE_HDR_DATA_SEG_LEN_MASK   0xFFFFFF /* DataSegmentLength */
710*14b24e2bSVaishali Kulkarni #define ISCSI_RESPONSE_HDR_DATA_SEG_LEN_SHIFT  0
711*14b24e2bSVaishali Kulkarni #define ISCSI_RESPONSE_HDR_TOTAL_AHS_LEN_MASK  0xFF /* TotalAHSLength */
712*14b24e2bSVaishali Kulkarni #define ISCSI_RESPONSE_HDR_TOTAL_AHS_LEN_SHIFT 24
713*14b24e2bSVaishali Kulkarni 	struct regpair lun /* Logical Unit Number */;
714*14b24e2bSVaishali Kulkarni 	__le32 itt /* Initiator Task Tag (only 2 bytes are significant). [constant, initialized] */;
715*14b24e2bSVaishali Kulkarni 	__le32 snack_tag /* Currently ERL>0 is not supported */;
716*14b24e2bSVaishali Kulkarni 	__le32 stat_sn /* CmdSN */;
717*14b24e2bSVaishali Kulkarni 	__le32 exp_cmd_sn /* Expected StatSn */;
718*14b24e2bSVaishali Kulkarni 	__le32 max_cmd_sn /* CmdSN */;
719*14b24e2bSVaishali Kulkarni 	__le32 exp_data_sn /* exp_data_sn */;
720*14b24e2bSVaishali Kulkarni 	__le32 bi_residual_count /* bi residual count */;
721*14b24e2bSVaishali Kulkarni 	__le32 residual_count /* residual count */;
722*14b24e2bSVaishali Kulkarni };
723*14b24e2bSVaishali Kulkarni 
724*14b24e2bSVaishali Kulkarni /*
725*14b24e2bSVaishali Kulkarni  * iSCSI Reject PDU header
726*14b24e2bSVaishali Kulkarni  */
727*14b24e2bSVaishali Kulkarni struct iscsi_reject_hdr
728*14b24e2bSVaishali Kulkarni {
729*14b24e2bSVaishali Kulkarni 	u8 reserved4 /* Reserved */;
730*14b24e2bSVaishali Kulkarni 	u8 hdr_reason /* The reject reason */;
731*14b24e2bSVaishali Kulkarni 	u8 hdr_flags /* Flags field of ISCSI header */;
732*14b24e2bSVaishali Kulkarni 	u8 opcode /* opcode. [constant, initialized] */;
733*14b24e2bSVaishali Kulkarni 	__le32 hdr_second_dword;
734*14b24e2bSVaishali Kulkarni #define ISCSI_REJECT_HDR_DATA_SEG_LEN_MASK   0xFFFFFF /* DataSegmentLength */
735*14b24e2bSVaishali Kulkarni #define ISCSI_REJECT_HDR_DATA_SEG_LEN_SHIFT  0
736*14b24e2bSVaishali Kulkarni #define ISCSI_REJECT_HDR_TOTAL_AHS_LEN_MASK  0xFF /* TotalAHSLength */
737*14b24e2bSVaishali Kulkarni #define ISCSI_REJECT_HDR_TOTAL_AHS_LEN_SHIFT 24
738*14b24e2bSVaishali Kulkarni 	struct regpair reserved0;
739*14b24e2bSVaishali Kulkarni 	__le32 all_ones;
740*14b24e2bSVaishali Kulkarni 	__le32 reserved2;
741*14b24e2bSVaishali Kulkarni 	__le32 stat_sn /* stat_sn */;
742*14b24e2bSVaishali Kulkarni 	__le32 exp_cmd_sn /* exp_cmd_sn */;
743*14b24e2bSVaishali Kulkarni 	__le32 max_cmd_sn /* max_cmd_sn */;
744*14b24e2bSVaishali Kulkarni 	__le32 data_sn /* data_sn */;
745*14b24e2bSVaishali Kulkarni 	__le32 reserved3[2] /* reserved3 */;
746*14b24e2bSVaishali Kulkarni };
747*14b24e2bSVaishali Kulkarni 
748*14b24e2bSVaishali Kulkarni /*
749*14b24e2bSVaishali Kulkarni  * PDU header part of Ystorm task context
750*14b24e2bSVaishali Kulkarni  */
751*14b24e2bSVaishali Kulkarni union iscsi_task_hdr
752*14b24e2bSVaishali Kulkarni {
753*14b24e2bSVaishali Kulkarni 	struct iscsi_common_hdr common /* Command PDU header */;
754*14b24e2bSVaishali Kulkarni 	struct data_hdr data /* Command PDU header */;
755*14b24e2bSVaishali Kulkarni 	struct iscsi_cmd_hdr cmd /* Command PDU header */;
756*14b24e2bSVaishali Kulkarni 	struct iscsi_ext_cdb_cmd_hdr ext_cdb_cmd /* Command PDU header with extended CDB - Initiator Mode */;
757*14b24e2bSVaishali Kulkarni 	struct iscsi_login_req_hdr login_req /* Login request PDU header */;
758*14b24e2bSVaishali Kulkarni 	struct iscsi_logout_req_hdr logout_req /* Logout request PDU header */;
759*14b24e2bSVaishali Kulkarni 	struct iscsi_data_out_hdr data_out /* Data-out PDU header */;
760*14b24e2bSVaishali Kulkarni 	struct iscsi_data_in_hdr data_in /* Data-in PDU header */;
761*14b24e2bSVaishali Kulkarni 	struct iscsi_r2t_hdr r2t /* R2T PDU header */;
762*14b24e2bSVaishali Kulkarni 	struct iscsi_nop_out_hdr nop_out /* NOP-out PDU header */;
763*14b24e2bSVaishali Kulkarni 	struct iscsi_nop_in_hdr nop_in /* NOP-in PDU header */;
764*14b24e2bSVaishali Kulkarni 	struct iscsi_login_response_hdr login_response /* Login response PDU header */;
765*14b24e2bSVaishali Kulkarni 	struct iscsi_logout_response_hdr logout_response /* Logout response PDU header */;
766*14b24e2bSVaishali Kulkarni 	struct iscsi_text_request_hdr text_request /* Text request PDU header */;
767*14b24e2bSVaishali Kulkarni 	struct iscsi_text_response_hdr text_response /* Text response PDU header */;
768*14b24e2bSVaishali Kulkarni 	struct iscsi_tmf_request_hdr tmf_request /* TMF request PDU header */;
769*14b24e2bSVaishali Kulkarni 	struct iscsi_tmf_response_hdr tmf_response /* TMF response PDU header */;
770*14b24e2bSVaishali Kulkarni 	struct iscsi_response_hdr response /* Text response PDU header */;
771*14b24e2bSVaishali Kulkarni 	struct iscsi_reject_hdr reject /* Reject PDU header */;
772*14b24e2bSVaishali Kulkarni 	struct iscsi_async_msg_hdr async_msg /* Asynchronous Message PDU header */;
773*14b24e2bSVaishali Kulkarni };
774*14b24e2bSVaishali Kulkarni 
775*14b24e2bSVaishali Kulkarni /*
776*14b24e2bSVaishali Kulkarni  * iSCSI CQ element
777*14b24e2bSVaishali Kulkarni  */
778*14b24e2bSVaishali Kulkarni struct iscsi_cqe_common
779*14b24e2bSVaishali Kulkarni {
780*14b24e2bSVaishali Kulkarni 	__le16 conn_id /* Drivers connection Id */;
781*14b24e2bSVaishali Kulkarni 	u8 cqe_type /* Indicates CQE type */;
782*14b24e2bSVaishali Kulkarni 	union cqe_error_status error_bitmap /* CQE error status */;
783*14b24e2bSVaishali Kulkarni 	__le32 reserved[3];
784*14b24e2bSVaishali Kulkarni 	union iscsi_task_hdr iscsi_hdr /* iscsi header union */;
785*14b24e2bSVaishali Kulkarni };
786*14b24e2bSVaishali Kulkarni 
787*14b24e2bSVaishali Kulkarni /*
788*14b24e2bSVaishali Kulkarni  * iSCSI CQ element
789*14b24e2bSVaishali Kulkarni  */
790*14b24e2bSVaishali Kulkarni struct iscsi_cqe_solicited
791*14b24e2bSVaishali Kulkarni {
792*14b24e2bSVaishali Kulkarni 	__le16 conn_id /* Drivers connection Id */;
793*14b24e2bSVaishali Kulkarni 	u8 cqe_type /* Indicates CQE type */;
794*14b24e2bSVaishali Kulkarni 	union cqe_error_status error_bitmap /* CQE error status */;
795*14b24e2bSVaishali Kulkarni 	__le16 itid /* initiator itt (Initiator mode) or target ttt (Target mode) */;
796*14b24e2bSVaishali Kulkarni 	u8 task_type /* Task type */;
797*14b24e2bSVaishali Kulkarni 	u8 fw_dbg_field /* FW debug params */;
798*14b24e2bSVaishali Kulkarni 	u8 caused_conn_err /* Equals 1 if this TID caused the connection error, otherwise equals 0. */;
799*14b24e2bSVaishali Kulkarni 	u8 reserved0[3];
800*14b24e2bSVaishali Kulkarni 	__le32 reserved1[1];
801*14b24e2bSVaishali Kulkarni 	union iscsi_task_hdr iscsi_hdr /* iscsi header union */;
802*14b24e2bSVaishali Kulkarni };
803*14b24e2bSVaishali Kulkarni 
804*14b24e2bSVaishali Kulkarni /*
805*14b24e2bSVaishali Kulkarni  * iSCSI CQ element
806*14b24e2bSVaishali Kulkarni  */
807*14b24e2bSVaishali Kulkarni struct iscsi_cqe_unsolicited
808*14b24e2bSVaishali Kulkarni {
809*14b24e2bSVaishali Kulkarni 	__le16 conn_id /* Drivers connection Id */;
810*14b24e2bSVaishali Kulkarni 	u8 cqe_type /* Indicates CQE type */;
811*14b24e2bSVaishali Kulkarni 	union cqe_error_status error_bitmap /* CQE error status */;
812*14b24e2bSVaishali Kulkarni 	__le16 reserved0 /* Reserved */;
813*14b24e2bSVaishali Kulkarni 	u8 reserved1 /* Reserved */;
814*14b24e2bSVaishali Kulkarni 	u8 unsol_cqe_type /* Represent this unsolicited CQE position in a sequence of packets belonging to the same unsolicited PDU */;
815*14b24e2bSVaishali Kulkarni 	struct regpair rqe_opaque /* Relevant for Unsolicited CQE only: The opaque data of RQ BDQ */;
816*14b24e2bSVaishali Kulkarni 	union iscsi_task_hdr iscsi_hdr /* iscsi header union */;
817*14b24e2bSVaishali Kulkarni };
818*14b24e2bSVaishali Kulkarni 
819*14b24e2bSVaishali Kulkarni /*
820*14b24e2bSVaishali Kulkarni  * iSCSI CQ element
821*14b24e2bSVaishali Kulkarni  */
822*14b24e2bSVaishali Kulkarni union iscsi_cqe
823*14b24e2bSVaishali Kulkarni {
824*14b24e2bSVaishali Kulkarni 	struct iscsi_cqe_common cqe_common /* Common CQE */;
825*14b24e2bSVaishali Kulkarni 	struct iscsi_cqe_solicited cqe_solicited /* Solicited CQE */;
826*14b24e2bSVaishali Kulkarni 	struct iscsi_cqe_unsolicited cqe_unsolicited /* Unsolicited CQE. relevant only when cqe_opcode == ISCSI_CQE_TYPE_UNSOLICITED */;
827*14b24e2bSVaishali Kulkarni };
828*14b24e2bSVaishali Kulkarni 
829*14b24e2bSVaishali Kulkarni 
830*14b24e2bSVaishali Kulkarni /*
831*14b24e2bSVaishali Kulkarni  * iSCSI CQE type
832*14b24e2bSVaishali Kulkarni  */
833*14b24e2bSVaishali Kulkarni enum iscsi_cqes_type
834*14b24e2bSVaishali Kulkarni {
835*14b24e2bSVaishali Kulkarni 	ISCSI_CQE_TYPE_SOLICITED=1 /* iSCSI CQE with solicited data */,
836*14b24e2bSVaishali Kulkarni 	ISCSI_CQE_TYPE_UNSOLICITED /* iSCSI CQE with unsolicited data */,
837*14b24e2bSVaishali Kulkarni 	ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE /* iSCSI CQE with solicited with sense data */,
838*14b24e2bSVaishali Kulkarni 	ISCSI_CQE_TYPE_TASK_CLEANUP /* iSCSI CQE task cleanup */,
839*14b24e2bSVaishali Kulkarni 	ISCSI_CQE_TYPE_DUMMY /* iSCSI Dummy CQE */,
840*14b24e2bSVaishali Kulkarni 	MAX_ISCSI_CQES_TYPE
841*14b24e2bSVaishali Kulkarni };
842*14b24e2bSVaishali Kulkarni 
843*14b24e2bSVaishali Kulkarni 
844*14b24e2bSVaishali Kulkarni 
845*14b24e2bSVaishali Kulkarni 
846*14b24e2bSVaishali Kulkarni 
847*14b24e2bSVaishali Kulkarni /*
848*14b24e2bSVaishali Kulkarni  * iSCSI CQE type
849*14b24e2bSVaishali Kulkarni  */
850*14b24e2bSVaishali Kulkarni enum iscsi_cqe_unsolicited_type
851*14b24e2bSVaishali Kulkarni {
852*14b24e2bSVaishali Kulkarni 	ISCSI_CQE_UNSOLICITED_NONE /* iSCSI CQE with unsolicited data */,
853*14b24e2bSVaishali Kulkarni 	ISCSI_CQE_UNSOLICITED_SINGLE /* iSCSI CQE with unsolicited data */,
854*14b24e2bSVaishali Kulkarni 	ISCSI_CQE_UNSOLICITED_FIRST /* iSCSI CQE with unsolicited data */,
855*14b24e2bSVaishali Kulkarni 	ISCSI_CQE_UNSOLICITED_MIDDLE /* iSCSI CQE with unsolicited data */,
856*14b24e2bSVaishali Kulkarni 	ISCSI_CQE_UNSOLICITED_LAST /* iSCSI CQE with unsolicited data */,
857*14b24e2bSVaishali Kulkarni 	MAX_ISCSI_CQE_UNSOLICITED_TYPE
858*14b24e2bSVaishali Kulkarni };
859*14b24e2bSVaishali Kulkarni 
860*14b24e2bSVaishali Kulkarni 
861*14b24e2bSVaishali Kulkarni 
862*14b24e2bSVaishali Kulkarni 
863*14b24e2bSVaishali Kulkarni /*
864*14b24e2bSVaishali Kulkarni  * iscsi debug modes
865*14b24e2bSVaishali Kulkarni  */
866*14b24e2bSVaishali Kulkarni struct iscsi_debug_modes
867*14b24e2bSVaishali Kulkarni {
868*14b24e2bSVaishali Kulkarni 	u8 flags;
869*14b24e2bSVaishali Kulkarni #define ISCSI_DEBUG_MODES_ASSERT_IF_RX_CONN_ERROR_MASK         0x1 /* Assert on Rx connection error */
870*14b24e2bSVaishali Kulkarni #define ISCSI_DEBUG_MODES_ASSERT_IF_RX_CONN_ERROR_SHIFT        0
871*14b24e2bSVaishali Kulkarni #define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_RESET_MASK            0x1 /* Assert if TCP RESET arrived */
872*14b24e2bSVaishali Kulkarni #define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_RESET_SHIFT           1
873*14b24e2bSVaishali Kulkarni #define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_FIN_MASK              0x1 /* Assert if TCP FIN arrived */
874*14b24e2bSVaishali Kulkarni #define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_FIN_SHIFT             2
875*14b24e2bSVaishali Kulkarni #define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_CLEANUP_MASK          0x1 /* Assert if cleanup flow */
876*14b24e2bSVaishali Kulkarni #define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_CLEANUP_SHIFT         3
877*14b24e2bSVaishali Kulkarni #define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_REJECT_OR_ASYNC_MASK  0x1 /* Assert if REJECT PDU or ASYNC PDU arrived */
878*14b24e2bSVaishali Kulkarni #define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_REJECT_OR_ASYNC_SHIFT 4
879*14b24e2bSVaishali Kulkarni #define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_NOP_MASK              0x1 /* Assert if NOP IN PDU or NOP OUT PDU arrived */
880*14b24e2bSVaishali Kulkarni #define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_NOP_SHIFT             5
881*14b24e2bSVaishali Kulkarni #define ISCSI_DEBUG_MODES_ASSERT_IF_DATA_DIGEST_ERROR_MASK     0x1 /* Assert if data digest error */
882*14b24e2bSVaishali Kulkarni #define ISCSI_DEBUG_MODES_ASSERT_IF_DATA_DIGEST_ERROR_SHIFT    6
883*14b24e2bSVaishali Kulkarni #define ISCSI_DEBUG_MODES_ASSERT_IF_DIF_ERROR_MASK             0x1 /* Assert if DIF error */
884*14b24e2bSVaishali Kulkarni #define ISCSI_DEBUG_MODES_ASSERT_IF_DIF_ERROR_SHIFT            7
885*14b24e2bSVaishali Kulkarni };
886*14b24e2bSVaishali Kulkarni 
887*14b24e2bSVaishali Kulkarni 
888*14b24e2bSVaishali Kulkarni /*
889*14b24e2bSVaishali Kulkarni  * iSCSI DIF flags
890*14b24e2bSVaishali Kulkarni  */
891*14b24e2bSVaishali Kulkarni struct iscsi_dif_flags
892*14b24e2bSVaishali Kulkarni {
893*14b24e2bSVaishali Kulkarni 	u8 flags;
894*14b24e2bSVaishali Kulkarni #define ISCSI_DIF_FLAGS_PROT_INTERVAL_SIZE_LOG_MASK  0xF /* Protection log interval (9=512 10=1024  11=2048 12=4096 13=8192) */
895*14b24e2bSVaishali Kulkarni #define ISCSI_DIF_FLAGS_PROT_INTERVAL_SIZE_LOG_SHIFT 0
896*14b24e2bSVaishali Kulkarni #define ISCSI_DIF_FLAGS_DIF_TO_PEER_MASK             0x1 /* If DIF protection is configured against target (0=no, 1=yes) */
897*14b24e2bSVaishali Kulkarni #define ISCSI_DIF_FLAGS_DIF_TO_PEER_SHIFT            4
898*14b24e2bSVaishali Kulkarni #define ISCSI_DIF_FLAGS_HOST_INTERFACE_MASK          0x7 /* If DIF/DIX protection is configured against the host (0=none, 1=DIF, 2=DIX 2 bytes, 3=DIX 4 bytes, 4=DIX 8 bytes) */
899*14b24e2bSVaishali Kulkarni #define ISCSI_DIF_FLAGS_HOST_INTERFACE_SHIFT         5
900*14b24e2bSVaishali Kulkarni };
901*14b24e2bSVaishali Kulkarni 
902*14b24e2bSVaishali Kulkarni 
903*14b24e2bSVaishali Kulkarni /*
904*14b24e2bSVaishali Kulkarni  * iSCSI kernel completion queue IDs
905*14b24e2bSVaishali Kulkarni  */
906*14b24e2bSVaishali Kulkarni enum iscsi_eqe_opcode
907*14b24e2bSVaishali Kulkarni {
908*14b24e2bSVaishali Kulkarni 	ISCSI_EVENT_TYPE_INIT_FUNC=0 /* iSCSI response after init Ramrod */,
909*14b24e2bSVaishali Kulkarni 	ISCSI_EVENT_TYPE_DESTROY_FUNC /* iSCSI response after destroy Ramrod */,
910*14b24e2bSVaishali Kulkarni 	ISCSI_EVENT_TYPE_OFFLOAD_CONN /* iSCSI response after option 2 offload Ramrod */,
911*14b24e2bSVaishali Kulkarni 	ISCSI_EVENT_TYPE_UPDATE_CONN /* iSCSI response after update Ramrod */,
912*14b24e2bSVaishali Kulkarni 	ISCSI_EVENT_TYPE_CLEAR_SQ /* iSCSI response after clear sq Ramrod */,
913*14b24e2bSVaishali Kulkarni 	ISCSI_EVENT_TYPE_TERMINATE_CONN /* iSCSI response after termination Ramrod */,
914*14b24e2bSVaishali Kulkarni 	ISCSI_EVENT_TYPE_MAC_UPDATE_CONN /* iSCSI response after MAC address update Ramrod */,
915*14b24e2bSVaishali Kulkarni 	ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE /* iSCSI response after option 2 connect completed (A-syn EQE) */,
916*14b24e2bSVaishali Kulkarni 	ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE /* iSCSI response after option 2 termination completed (A-syn EQE) */,
917*14b24e2bSVaishali Kulkarni 	RESERVED9 /* reserved9 */,
918*14b24e2bSVaishali Kulkarni 	ISCSI_EVENT_TYPE_START_OF_ERROR_TYPES=10 /* Never returned in EQE, used to separate Regular event types from Error event types */,
919*14b24e2bSVaishali Kulkarni 	ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD /* iSCSI abort response after TCP RST packet recieve (A-syn EQE) */,
920*14b24e2bSVaishali Kulkarni 	ISCSI_EVENT_TYPE_ASYN_CLOSE_RCVD /* iSCSI response after close receive (A-syn EQE) */,
921*14b24e2bSVaishali Kulkarni 	ISCSI_EVENT_TYPE_ASYN_SYN_RCVD /* iSCSI response after TCP SYN+ACK packet receive (A-syn EQE) */,
922*14b24e2bSVaishali Kulkarni 	ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME /* iSCSI error - tcp max retransmit time (A-syn EQE) */,
923*14b24e2bSVaishali Kulkarni 	ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT /* iSCSI error - tcp max retransmit count (A-syn EQE) */,
924*14b24e2bSVaishali Kulkarni 	ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT /* iSCSI error - tcp ka probes count (A-syn EQE) */,
925*14b24e2bSVaishali Kulkarni 	ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2 /* iSCSI error - tcp fin wait 2 (A-syn EQE) */,
926*14b24e2bSVaishali Kulkarni 	ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR /* iSCSI error response (A-syn EQE) */,
927*14b24e2bSVaishali Kulkarni 	ISCSI_EVENT_TYPE_TCP_CONN_ERROR /* iSCSI error - tcp error (A-syn EQE) */,
928*14b24e2bSVaishali Kulkarni 	MAX_ISCSI_EQE_OPCODE
929*14b24e2bSVaishali Kulkarni };
930*14b24e2bSVaishali Kulkarni 
931*14b24e2bSVaishali Kulkarni 
932*14b24e2bSVaishali Kulkarni /*
933*14b24e2bSVaishali Kulkarni  * iSCSI EQE and CQE completion status
934*14b24e2bSVaishali Kulkarni  */
935*14b24e2bSVaishali Kulkarni enum iscsi_error_types
936*14b24e2bSVaishali Kulkarni {
937*14b24e2bSVaishali Kulkarni 	ISCSI_STATUS_NONE=0,
938*14b24e2bSVaishali Kulkarni 	ISCSI_CQE_ERROR_UNSOLICITED_RCV_ON_INVALID_CONN=1,
939*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_TASK_CID_MISMATCH /* iSCSI connection error - Corrupted Task context  */,
940*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_TASK_NOT_VALID /* iSCSI connection error - The task is not valid  */,
941*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_RQ_RING_IS_FULL /* iSCSI connection error - RQ full  */,
942*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_CMDQ_RING_IS_FULL /* iSCSI connection error - CMDQ full (Target only)  */,
943*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_HQE_CACHING_FAILED /* iSCSI connection error - HQ error  */,
944*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_HEADER_DIGEST_ERROR /* iSCSI connection error - Header digest error */,
945*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_LOCAL_COMPLETION_ERROR /* iSCSI connection error - Local completion bit is not correct   (A-syn EQE) */,
946*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_DATA_OVERRUN /* iSCSI connection error - data overrun */,
947*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_OUT_OF_SGES_ERROR /* iSCSI connection error - out of sges in task context */,
948*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_IP_OPTIONS_ERROR /* TCP connection error - IP option error  */,
949*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PRS_ERRORS /* TCP connection error - error indication form parser */,
950*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_CONNECT_INVALID_TCP_OPTION /* TCP connection error - tcp options error(option 2 only)  */,
951*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_TCP_IP_FRAGMENT_ERROR /* TCP connection error - IP fragmentation error  */,
952*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_AHS_LEN /* iSCSI connection error - invalid AHS length (Target only)  */,
953*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_AHS_TYPE /* iSCSI connection error - invalid AHS type (Target only)  */,
954*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_ITT_OUT_OF_RANGE /* iSCSI connection error - invalid ITT  */,
955*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_TTT_OUT_OF_RANGE /* iSCSI connection error - invalid TTT (Target only)  */,
956*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_EXCEEDS_PDU_SIZE /* iSCSI connection error - PDU data_seg_len > max receive pdu size */,
957*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE /* iSCSI connection error - invalid PDU opcode */,
958*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE_BEFORE_UPDATE /* iSCSI connection error - invalid PDU opcode before update ramrod (Option 2 only)  */,
959*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_UNVALID_NOPIN_DSL /* iSCSI connection error - NOPIN dsl > 0 and ITT = 0xffffffff (Initiator only)  */,
960*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_CARRIES_NO_DATA /* iSCSI connection error - R2T dsl > 0 (Initiator only)  */,
961*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SN /* iSCSI connection error - DATA-SN error  */,
962*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_IN_TTT /* iSCSI connection error - DATA-IN TTT error (Initiator only)  */,
963*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_OUT_ITT /* iSCSI connection error - DATA-OUT ITT error (Target only)  */,
964*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_TTT /* iSCSI connection error - R2T TTT error (Initiator only)  */,
965*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_BUFFER_OFFSET /* iSCSI connection error - R2T buffer offset error (Initiator only)  */,
966*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_BUFFER_OFFSET_OOO /* iSCSI connection error - DATA PDU buffer offset error  */,
967*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_SN /* iSCSI connection error - R2T SN error (Initiator only)  */,
968*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0 /* iSCSI connection error - R2T desired data transfer length = 0 (Initiator only)  */,
969*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1 /* iSCSI connection error - R2T desired data transfer length less then max burst size (Initiator only)  */,
970*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_2 /* iSCSI connection error - R2T desired data transfer length + buffer offset > task size (Initiator only)  */,
971*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_LUN /* iSCSI connection error - R2T unvalid LUN (Initiator only)  */,
972*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_F_BIT_ZERO /* iSCSI connection error - All data has been already received, however it is not the end of sequence (Initiator only)  */,
973*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_F_BIT_ZERO_S_BIT_ONE /* iSCSI connection error - S-bit and final bit = 1 (Initiator only)  */,
974*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_EXP_STAT_SN /* iSCSI connection error - STAT SN error (Initiator only)  */,
975*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_DSL_NOT_ZERO /* iSCSI connection error - TMF or LOGOUT PDUs dsl > 0 (Initiator only)  */,
976*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_DSL /* iSCSI connection error - CMD PDU dsl>0 while immediate data is disabled (Target only)  */,
977*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_TOO_BIG /* iSCSI connection error - Data In overrun (Initiator only)  */,
978*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_OUTSTANDING_R2T_COUNT /* iSCSI connection error - >1 outstanding R2T (Initiator only)  */,
979*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_PROTOCOL_ERR_DIF_TX /* iSCSI connection error - DIF Tx error + DIF error drop is enabled (Target only)  */,
980*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_SENSE_DATA_LENGTH /* iSCSI connection error - Sense data length > 256 (Initiator only)  */,
981*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_DATA_PLACEMENT_ERROR /* iSCSI connection error - Data placement error  */,
982*14b24e2bSVaishali Kulkarni 	ISCSI_CONN_ERROR_INVALID_ITT /* iSCSI connection error - Invalid ITT (Target Only) */,
983*14b24e2bSVaishali Kulkarni 	ISCSI_ERROR_UNKNOWN /* iSCSI connection error  */,
984*14b24e2bSVaishali Kulkarni 	MAX_ISCSI_ERROR_TYPES
985*14b24e2bSVaishali Kulkarni };
986*14b24e2bSVaishali Kulkarni 
987*14b24e2bSVaishali Kulkarni 
988*14b24e2bSVaishali Kulkarni 
989*14b24e2bSVaishali Kulkarni 
990*14b24e2bSVaishali Kulkarni 
991*14b24e2bSVaishali Kulkarni 
992*14b24e2bSVaishali Kulkarni 
993*14b24e2bSVaishali Kulkarni 
994*14b24e2bSVaishali Kulkarni 
995*14b24e2bSVaishali Kulkarni 
996*14b24e2bSVaishali Kulkarni /*
997*14b24e2bSVaishali Kulkarni  * iSCSI Ramrod Command IDs
998*14b24e2bSVaishali Kulkarni  */
999*14b24e2bSVaishali Kulkarni enum iscsi_ramrod_cmd_id
1000*14b24e2bSVaishali Kulkarni {
1001*14b24e2bSVaishali Kulkarni 	ISCSI_RAMROD_CMD_ID_UNUSED=0,
1002*14b24e2bSVaishali Kulkarni 	ISCSI_RAMROD_CMD_ID_INIT_FUNC=1 /* iSCSI function init Ramrod */,
1003*14b24e2bSVaishali Kulkarni 	ISCSI_RAMROD_CMD_ID_DESTROY_FUNC=2 /* iSCSI function destroy Ramrod */,
1004*14b24e2bSVaishali Kulkarni 	ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN=3 /* iSCSI connection offload Ramrod */,
1005*14b24e2bSVaishali Kulkarni 	ISCSI_RAMROD_CMD_ID_UPDATE_CONN=4 /* iSCSI connection update Ramrod  */,
1006*14b24e2bSVaishali Kulkarni 	ISCSI_RAMROD_CMD_ID_TERMINATION_CONN=5 /* iSCSI connection offload Ramrod. Command ID known only to FW and VBD */,
1007*14b24e2bSVaishali Kulkarni 	ISCSI_RAMROD_CMD_ID_CLEAR_SQ=6 /* iSCSI connection clear-sq ramrod.  */,
1008*14b24e2bSVaishali Kulkarni 	ISCSI_RAMROD_CMD_ID_MAC_UPDATE=7 /* iSCSI connection update MAC address ramrod.  */,
1009*14b24e2bSVaishali Kulkarni 	MAX_ISCSI_RAMROD_CMD_ID
1010*14b24e2bSVaishali Kulkarni };
1011*14b24e2bSVaishali Kulkarni 
1012*14b24e2bSVaishali Kulkarni 
1013*14b24e2bSVaishali Kulkarni struct iscsi_reg1
1014*14b24e2bSVaishali Kulkarni {
1015*14b24e2bSVaishali Kulkarni 	__le32 reg1_map;
1016*14b24e2bSVaishali Kulkarni #define ISCSI_REG1_NUM_SGES_MASK   0xF /* Written to R2tQE */
1017*14b24e2bSVaishali Kulkarni #define ISCSI_REG1_NUM_SGES_SHIFT  0
1018*14b24e2bSVaishali Kulkarni #define ISCSI_REG1_RESERVED1_MASK  0xFFFFFFF /* reserved */
1019*14b24e2bSVaishali Kulkarni #define ISCSI_REG1_RESERVED1_SHIFT 4
1020*14b24e2bSVaishali Kulkarni };
1021*14b24e2bSVaishali Kulkarni 
1022*14b24e2bSVaishali Kulkarni 
1023*14b24e2bSVaishali Kulkarni 
1024*14b24e2bSVaishali Kulkarni 
1025*14b24e2bSVaishali Kulkarni /*
1026*14b24e2bSVaishali Kulkarni  * Union of data/r2t sequence number
1027*14b24e2bSVaishali Kulkarni  */
1028*14b24e2bSVaishali Kulkarni union iscsi_seq_num
1029*14b24e2bSVaishali Kulkarni {
1030*14b24e2bSVaishali Kulkarni 	__le16 data_sn /* data-in sequence number */;
1031*14b24e2bSVaishali Kulkarni 	__le16 r2t_sn /* r2t pdu sequence number */;
1032*14b24e2bSVaishali Kulkarni };
1033*14b24e2bSVaishali Kulkarni 
1034*14b24e2bSVaishali Kulkarni 
1035*14b24e2bSVaishali Kulkarni 
1036*14b24e2bSVaishali Kulkarni /*
1037*14b24e2bSVaishali Kulkarni  * ISCSI connection termination request
1038*14b24e2bSVaishali Kulkarni  */
1039*14b24e2bSVaishali Kulkarni struct iscsi_spe_conn_mac_update
1040*14b24e2bSVaishali Kulkarni {
1041*14b24e2bSVaishali Kulkarni 	struct iscsi_slow_path_hdr hdr /* spe message header. */;
1042*14b24e2bSVaishali Kulkarni 	__le16 conn_id /* ISCSI Connection ID. */;
1043*14b24e2bSVaishali Kulkarni 	__le32 fw_cid /* Context ID (cid) of the connection. */;
1044*14b24e2bSVaishali Kulkarni 	__le16 remote_mac_addr_lo /* new remote mac address lo */;
1045*14b24e2bSVaishali Kulkarni 	__le16 remote_mac_addr_mid /* new remote mac address mid */;
1046*14b24e2bSVaishali Kulkarni 	__le16 remote_mac_addr_hi /* new remote mac address hi */;
1047*14b24e2bSVaishali Kulkarni 	u8 reserved0[2];
1048*14b24e2bSVaishali Kulkarni };
1049*14b24e2bSVaishali Kulkarni 
1050*14b24e2bSVaishali Kulkarni 
1051*14b24e2bSVaishali Kulkarni /*
1052*14b24e2bSVaishali Kulkarni  * ISCSI and TCP connection(Option 1) offload params passed by driver to FW in ISCSI offload ramrod
1053*14b24e2bSVaishali Kulkarni  */
1054*14b24e2bSVaishali Kulkarni struct iscsi_spe_conn_offload
1055*14b24e2bSVaishali Kulkarni {
1056*14b24e2bSVaishali Kulkarni 	struct iscsi_slow_path_hdr hdr /* spe message header. */;
1057*14b24e2bSVaishali Kulkarni 	__le16 conn_id /* ISCSI Connection ID. */;
1058*14b24e2bSVaishali Kulkarni 	__le32 fw_cid;
1059*14b24e2bSVaishali Kulkarni 	struct iscsi_conn_offload_params iscsi /* iSCSI session offload params */;
1060*14b24e2bSVaishali Kulkarni 	struct tcp_offload_params tcp /* iSCSI session offload params */;
1061*14b24e2bSVaishali Kulkarni };
1062*14b24e2bSVaishali Kulkarni 
1063*14b24e2bSVaishali Kulkarni 
1064*14b24e2bSVaishali Kulkarni /*
1065*14b24e2bSVaishali Kulkarni  * ISCSI and TCP connection(Option 2) offload params passed by driver to FW in ISCSI offload ramrod
1066*14b24e2bSVaishali Kulkarni  */
1067*14b24e2bSVaishali Kulkarni struct iscsi_spe_conn_offload_option2
1068*14b24e2bSVaishali Kulkarni {
1069*14b24e2bSVaishali Kulkarni 	struct iscsi_slow_path_hdr hdr /* spe message header. */;
1070*14b24e2bSVaishali Kulkarni 	__le16 conn_id /* ISCSI Connection ID. */;
1071*14b24e2bSVaishali Kulkarni 	__le32 fw_cid;
1072*14b24e2bSVaishali Kulkarni 	struct iscsi_conn_offload_params iscsi /* iSCSI session offload params */;
1073*14b24e2bSVaishali Kulkarni 	struct tcp_offload_params_opt2 tcp /* iSCSI session offload params */;
1074*14b24e2bSVaishali Kulkarni };
1075*14b24e2bSVaishali Kulkarni 
1076*14b24e2bSVaishali Kulkarni 
1077*14b24e2bSVaishali Kulkarni /*
1078*14b24e2bSVaishali Kulkarni  * ISCSI connection termination request
1079*14b24e2bSVaishali Kulkarni  */
1080*14b24e2bSVaishali Kulkarni struct iscsi_spe_conn_termination
1081*14b24e2bSVaishali Kulkarni {
1082*14b24e2bSVaishali Kulkarni 	struct iscsi_slow_path_hdr hdr /* spe message header. */;
1083*14b24e2bSVaishali Kulkarni 	__le16 conn_id /* ISCSI Connection ID. */;
1084*14b24e2bSVaishali Kulkarni 	__le32 fw_cid /* Context ID (cid) of the connection. */;
1085*14b24e2bSVaishali Kulkarni 	u8 abortive /* Mark termination as abort(reset) flow */;
1086*14b24e2bSVaishali Kulkarni 	u8 reserved0[7];
1087*14b24e2bSVaishali Kulkarni 	struct regpair queue_cnts_addr /* cmdq and unsolicited counters termination params */;
1088*14b24e2bSVaishali Kulkarni 	struct regpair query_params_addr /* query_params_ptr */;
1089*14b24e2bSVaishali Kulkarni };
1090*14b24e2bSVaishali Kulkarni 
1091*14b24e2bSVaishali Kulkarni 
1092*14b24e2bSVaishali Kulkarni /*
1093*14b24e2bSVaishali Kulkarni  * iSCSI firmware function destroy parameters
1094*14b24e2bSVaishali Kulkarni  */
1095*14b24e2bSVaishali Kulkarni struct iscsi_spe_func_dstry
1096*14b24e2bSVaishali Kulkarni {
1097*14b24e2bSVaishali Kulkarni 	struct iscsi_slow_path_hdr hdr /* spe message header. */;
1098*14b24e2bSVaishali Kulkarni 	__le16 reserved0;
1099*14b24e2bSVaishali Kulkarni 	__le32 reserved1;
1100*14b24e2bSVaishali Kulkarni };
1101*14b24e2bSVaishali Kulkarni 
1102*14b24e2bSVaishali Kulkarni 
1103*14b24e2bSVaishali Kulkarni /*
1104*14b24e2bSVaishali Kulkarni  * iSCSI firmware function init parameters
1105*14b24e2bSVaishali Kulkarni  */
1106*14b24e2bSVaishali Kulkarni struct iscsi_spe_func_init
1107*14b24e2bSVaishali Kulkarni {
1108*14b24e2bSVaishali Kulkarni 	struct iscsi_slow_path_hdr hdr /* spe message header. */;
1109*14b24e2bSVaishali Kulkarni 	__le16 half_way_close_timeout /* Half Way Close Timeout in Option 2 Close */;
1110*14b24e2bSVaishali Kulkarni 	u8 num_sq_pages_in_ring /* Number of entries in the SQ PBL. Provided by driver at function init spe */;
1111*14b24e2bSVaishali Kulkarni 	u8 num_r2tq_pages_in_ring /* Number of entries in the R2TQ PBL. Provided by driver at function init spe */;
1112*14b24e2bSVaishali Kulkarni 	u8 num_uhq_pages_in_ring /* Number of entries in the uHQ PBL (xHQ entries is X2). Provided by driver at function init spe */;
1113*14b24e2bSVaishali Kulkarni 	u8 ll2_rx_queue_id /* Queue ID of the Light-L2 Rx Queue */;
1114*14b24e2bSVaishali Kulkarni 	u8 ooo_enable /* Enable Out Of Order mode (enable = 1) */;
1115*14b24e2bSVaishali Kulkarni 	struct iscsi_debug_modes debug_mode /* Use iscsi_debug_mode flags */;
1116*14b24e2bSVaishali Kulkarni 	__le16 reserved1;
1117*14b24e2bSVaishali Kulkarni 	__le32 reserved2;
1118*14b24e2bSVaishali Kulkarni 	__le32 reserved3;
1119*14b24e2bSVaishali Kulkarni 	__le32 reserved4;
1120*14b24e2bSVaishali Kulkarni 	struct scsi_init_func_params func_params /* Common SCSI init params passed by driver to FW in function init ramrod */;
1121*14b24e2bSVaishali Kulkarni 	struct scsi_init_func_queues q_params /* SCSI RQ/CQ firmware function init parameters */;
1122*14b24e2bSVaishali Kulkarni };
1123*14b24e2bSVaishali Kulkarni 
1124*14b24e2bSVaishali Kulkarni 
1125*14b24e2bSVaishali Kulkarni /*
1126*14b24e2bSVaishali Kulkarni  * The iscsi storm task context of Ystorm
1127*14b24e2bSVaishali Kulkarni  */
1128*14b24e2bSVaishali Kulkarni struct ystorm_iscsi_task_state
1129*14b24e2bSVaishali Kulkarni {
1130*14b24e2bSVaishali Kulkarni 	struct scsi_cached_sges data_desc;
1131*14b24e2bSVaishali Kulkarni 	struct scsi_sgl_params sgl_params;
1132*14b24e2bSVaishali Kulkarni 	__le32 exp_r2t_sn /* Initiator mode - Expected R2T PDU index in sequence. [variable, initialized 0] */;
1133*14b24e2bSVaishali Kulkarni 	__le32 buffer_offset /* Payload data offset */;
1134*14b24e2bSVaishali Kulkarni 	union iscsi_seq_num seq_num /* PDU index in sequence */;
1135*14b24e2bSVaishali Kulkarni 	struct iscsi_dif_flags dif_flags /* Dif flags */;
1136*14b24e2bSVaishali Kulkarni 	u8 flags;
1137*14b24e2bSVaishali Kulkarni #define YSTORM_ISCSI_TASK_STATE_LOCAL_COMP_MASK  0x1 /* local_completion  */
1138*14b24e2bSVaishali Kulkarni #define YSTORM_ISCSI_TASK_STATE_LOCAL_COMP_SHIFT 0
1139*14b24e2bSVaishali Kulkarni #define YSTORM_ISCSI_TASK_STATE_SLOW_IO_MASK     0x1 /* Equals 1 if SGL is predicted and 0 otherwise. */
1140*14b24e2bSVaishali Kulkarni #define YSTORM_ISCSI_TASK_STATE_SLOW_IO_SHIFT    1
1141*14b24e2bSVaishali Kulkarni #define YSTORM_ISCSI_TASK_STATE_RESERVED0_MASK   0x3F
1142*14b24e2bSVaishali Kulkarni #define YSTORM_ISCSI_TASK_STATE_RESERVED0_SHIFT  2
1143*14b24e2bSVaishali Kulkarni };
1144*14b24e2bSVaishali Kulkarni 
1145*14b24e2bSVaishali Kulkarni /*
1146*14b24e2bSVaishali Kulkarni  * The iscsi storm task context of Ystorm
1147*14b24e2bSVaishali Kulkarni  */
1148*14b24e2bSVaishali Kulkarni struct ystorm_iscsi_task_rxmit_opt
1149*14b24e2bSVaishali Kulkarni {
1150*14b24e2bSVaishali Kulkarni 	__le32 fast_rxmit_sge_offset /* SGE offset from which to continue dummy-read or start fast retransmit */;
1151*14b24e2bSVaishali Kulkarni 	__le32 scan_start_buffer_offset /* Starting buffer offset of next retransmit SGL scan */;
1152*14b24e2bSVaishali Kulkarni 	__le32 fast_rxmit_buffer_offset /* Buffer offset from which to continue dummy-read or start fast retransmit */;
1153*14b24e2bSVaishali Kulkarni 	u8 scan_start_sgl_index /* Starting SGL index of next retransmit SGL scan */;
1154*14b24e2bSVaishali Kulkarni 	u8 fast_rxmit_sgl_index /* SGL index from which to continue dummy-read or start fast retransmit */;
1155*14b24e2bSVaishali Kulkarni 	__le16 reserved /* reserved */;
1156*14b24e2bSVaishali Kulkarni };
1157*14b24e2bSVaishali Kulkarni 
1158*14b24e2bSVaishali Kulkarni /*
1159*14b24e2bSVaishali Kulkarni  * The iscsi storm task context of Ystorm
1160*14b24e2bSVaishali Kulkarni  */
1161*14b24e2bSVaishali Kulkarni struct ystorm_iscsi_task_st_ctx
1162*14b24e2bSVaishali Kulkarni {
1163*14b24e2bSVaishali Kulkarni 	struct ystorm_iscsi_task_state state /* iSCSI task parameters and state */;
1164*14b24e2bSVaishali Kulkarni 	struct ystorm_iscsi_task_rxmit_opt rxmit_opt /* iSCSI retransmit optimizations parameters */;
1165*14b24e2bSVaishali Kulkarni 	union iscsi_task_hdr pdu_hdr /* PDU header - [constant initialized] */;
1166*14b24e2bSVaishali Kulkarni };
1167*14b24e2bSVaishali Kulkarni 
1168*14b24e2bSVaishali Kulkarni struct e4_ystorm_iscsi_task_ag_ctx
1169*14b24e2bSVaishali Kulkarni {
1170*14b24e2bSVaishali Kulkarni 	u8 reserved /* cdu_validation */;
1171*14b24e2bSVaishali Kulkarni 	u8 byte1 /* state */;
1172*14b24e2bSVaishali Kulkarni 	__le16 word0 /* icid */;
1173*14b24e2bSVaishali Kulkarni 	u8 flags0;
1174*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_MASK     0xF /* connection_type */
1175*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_SHIFT    0
1176*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_BIT0_MASK        0x1 /* exist_in_qm0 */
1177*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_BIT0_SHIFT       4
1178*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_BIT1_MASK        0x1 /* exist_in_qm1 */
1179*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_BIT1_SHIFT       5
1180*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_VALID_MASK       0x1 /* bit2 */
1181*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_VALID_SHIFT      6
1182*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_BIT3_MASK        0x1 /* bit3 */
1183*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_BIT3_SHIFT       7
1184*14b24e2bSVaishali Kulkarni 	u8 flags1;
1185*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_CF0_MASK         0x3 /* cf0 */
1186*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_CF0_SHIFT        0
1187*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_CF1_MASK         0x3 /* cf1 */
1188*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_CF1_SHIFT        2
1189*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_CF2SPECIAL_MASK  0x3 /* cf2special */
1190*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_CF2SPECIAL_SHIFT 4
1191*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_CF0EN_MASK       0x1 /* cf0en */
1192*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_CF0EN_SHIFT      6
1193*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_CF1EN_MASK       0x1 /* cf1en */
1194*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_CF1EN_SHIFT      7
1195*14b24e2bSVaishali Kulkarni 	u8 flags2;
1196*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_BIT4_MASK        0x1 /* bit4 */
1197*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_BIT4_SHIFT       0
1198*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE0EN_MASK     0x1 /* rule0en */
1199*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE0EN_SHIFT    1
1200*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK     0x1 /* rule1en */
1201*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT    2
1202*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE2EN_MASK     0x1 /* rule2en */
1203*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE2EN_SHIFT    3
1204*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK     0x1 /* rule3en */
1205*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT    4
1206*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK     0x1 /* rule4en */
1207*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT    5
1208*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK     0x1 /* rule5en */
1209*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT    6
1210*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE6EN_MASK     0x1 /* rule6en */
1211*14b24e2bSVaishali Kulkarni #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE6EN_SHIFT    7
1212*14b24e2bSVaishali Kulkarni 	u8 byte2 /* byte2 */;
1213*14b24e2bSVaishali Kulkarni 	__le32 TTT /* reg0 */;
1214*14b24e2bSVaishali Kulkarni 	u8 byte3 /* byte3 */;
1215*14b24e2bSVaishali Kulkarni 	u8 byte4 /* byte4 */;
1216*14b24e2bSVaishali Kulkarni 	__le16 word1 /* word1 */;
1217*14b24e2bSVaishali Kulkarni };
1218*14b24e2bSVaishali Kulkarni 
1219*14b24e2bSVaishali Kulkarni struct e4_mstorm_iscsi_task_ag_ctx
1220*14b24e2bSVaishali Kulkarni {
1221*14b24e2bSVaishali Kulkarni 	u8 cdu_validation /* cdu_validation */;
1222*14b24e2bSVaishali Kulkarni 	u8 byte1 /* state */;
1223*14b24e2bSVaishali Kulkarni 	__le16 task_cid /* icid */;
1224*14b24e2bSVaishali Kulkarni 	u8 flags0;
1225*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_MASK     0xF /* connection_type */
1226*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_SHIFT    0
1227*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_MASK        0x1 /* exist_in_qm0 */
1228*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_SHIFT       4
1229*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_BIT1_MASK                0x1 /* exist_in_qm1 */
1230*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_BIT1_SHIFT               5
1231*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_VALID_MASK               0x1 /* bit2 */
1232*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_VALID_SHIFT              6
1233*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_FLAG_MASK   0x1 /* bit3 */
1234*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_FLAG_SHIFT  7
1235*14b24e2bSVaishali Kulkarni 	u8 flags1;
1236*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_MASK     0x3 /* cf0 */
1237*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_SHIFT    0
1238*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_CF1_MASK                 0x3 /* cf1 */
1239*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_CF1_SHIFT                2
1240*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_CF2_MASK                 0x3 /* cf2 */
1241*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_CF2_SHIFT                4
1242*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_EN_MASK  0x1 /* cf0en */
1243*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_EN_SHIFT 6
1244*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_CF1EN_MASK               0x1 /* cf1en */
1245*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_CF1EN_SHIFT              7
1246*14b24e2bSVaishali Kulkarni 	u8 flags2;
1247*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_CF2EN_MASK               0x1 /* cf2en */
1248*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_CF2EN_SHIFT              0
1249*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE0EN_MASK             0x1 /* rule0en */
1250*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE0EN_SHIFT            1
1251*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK             0x1 /* rule1en */
1252*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT            2
1253*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE2EN_MASK             0x1 /* rule2en */
1254*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE2EN_SHIFT            3
1255*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK             0x1 /* rule3en */
1256*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT            4
1257*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK             0x1 /* rule4en */
1258*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT            5
1259*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK             0x1 /* rule5en */
1260*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT            6
1261*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE6EN_MASK             0x1 /* rule6en */
1262*14b24e2bSVaishali Kulkarni #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE6EN_SHIFT            7
1263*14b24e2bSVaishali Kulkarni 	u8 byte2 /* byte2 */;
1264*14b24e2bSVaishali Kulkarni 	__le32 reg0 /* reg0 */;
1265*14b24e2bSVaishali Kulkarni 	u8 byte3 /* byte3 */;
1266*14b24e2bSVaishali Kulkarni 	u8 byte4 /* byte4 */;
1267*14b24e2bSVaishali Kulkarni 	__le16 word1 /* word1 */;
1268*14b24e2bSVaishali Kulkarni };
1269*14b24e2bSVaishali Kulkarni 
1270*14b24e2bSVaishali Kulkarni struct e4_ustorm_iscsi_task_ag_ctx
1271*14b24e2bSVaishali Kulkarni {
1272*14b24e2bSVaishali Kulkarni 	u8 reserved /* cdu_validation */;
1273*14b24e2bSVaishali Kulkarni 	u8 state /* state */;
1274*14b24e2bSVaishali Kulkarni 	__le16 icid /* icid */;
1275*14b24e2bSVaishali Kulkarni 	u8 flags0;
1276*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_MASK        0xF /* connection_type */
1277*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_SHIFT       0
1278*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_MASK           0x1 /* exist_in_qm0 */
1279*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_SHIFT          4
1280*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_BIT1_MASK                   0x1 /* exist_in_qm1 */
1281*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_BIT1_SHIFT                  5
1282*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_MASK          0x3 /* timer0cf */
1283*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_SHIFT         6
1284*14b24e2bSVaishali Kulkarni 	u8 flags1;
1285*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_RESERVED1_MASK              0x3 /* timer1cf */
1286*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_RESERVED1_SHIFT             0
1287*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_MASK               0x3 /* timer2cf */
1288*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_SHIFT              2
1289*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_CF3_MASK                    0x3 /* timer_stop_all */
1290*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_CF3_SHIFT                   4
1291*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_MASK           0x3 /* cf4 */
1292*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_SHIFT          6
1293*14b24e2bSVaishali Kulkarni 	u8 flags2;
1294*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_EN_MASK       0x1 /* cf0en */
1295*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_EN_SHIFT      0
1296*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_DISABLE_DATA_ACKED_MASK     0x1 /* cf1en */
1297*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_DISABLE_DATA_ACKED_SHIFT    1
1298*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_EN_MASK            0x1 /* cf2en */
1299*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_EN_SHIFT           2
1300*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_CF3EN_MASK                  0x1 /* cf3en */
1301*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_CF3EN_SHIFT                 3
1302*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_EN_MASK        0x1 /* cf4en */
1303*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_EN_SHIFT       4
1304*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_CMP_DATA_TOTAL_EXP_EN_MASK  0x1 /* rule0en */
1305*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_CMP_DATA_TOTAL_EXP_EN_SHIFT 5
1306*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK                0x1 /* rule1en */
1307*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT               6
1308*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_CMP_CONT_RCV_EXP_EN_MASK    0x1 /* rule2en */
1309*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_CMP_CONT_RCV_EXP_EN_SHIFT   7
1310*14b24e2bSVaishali Kulkarni 	u8 flags3;
1311*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK                0x1 /* rule3en */
1312*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT               0
1313*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK                0x1 /* rule4en */
1314*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT               1
1315*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK                0x1 /* rule5en */
1316*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT               2
1317*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_RULE6EN_MASK                0x1 /* rule6en */
1318*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_RULE6EN_SHIFT               3
1319*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_TYPE_MASK         0xF /* nibble1 */
1320*14b24e2bSVaishali Kulkarni #define E4_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_TYPE_SHIFT        4
1321*14b24e2bSVaishali Kulkarni 	__le32 dif_err_intervals /* reg0 */;
1322*14b24e2bSVaishali Kulkarni 	__le32 dif_error_1st_interval /* reg1 */;
1323*14b24e2bSVaishali Kulkarni 	__le32 rcv_cont_len /* reg2 */;
1324*14b24e2bSVaishali Kulkarni 	__le32 exp_cont_len /* reg3 */;
1325*14b24e2bSVaishali Kulkarni 	__le32 total_data_acked /* reg4 */;
1326*14b24e2bSVaishali Kulkarni 	__le32 exp_data_acked /* reg5 */;
1327*14b24e2bSVaishali Kulkarni 	u8 next_tid_valid /* byte2 */;
1328*14b24e2bSVaishali Kulkarni 	u8 byte3 /* byte3 */;
1329*14b24e2bSVaishali Kulkarni 	__le16 word1 /* word1 */;
1330*14b24e2bSVaishali Kulkarni 	__le16 next_tid /* word2 */;
1331*14b24e2bSVaishali Kulkarni 	__le16 word3 /* word3 */;
1332*14b24e2bSVaishali Kulkarni 	__le32 hdr_residual_count /* reg6 */;
1333*14b24e2bSVaishali Kulkarni 	__le32 exp_r2t_sn /* reg7 */;
1334*14b24e2bSVaishali Kulkarni };
1335*14b24e2bSVaishali Kulkarni 
1336*14b24e2bSVaishali Kulkarni /*
1337*14b24e2bSVaishali Kulkarni  * The iscsi storm task context of Mstorm
1338*14b24e2bSVaishali Kulkarni  */
1339*14b24e2bSVaishali Kulkarni struct mstorm_iscsi_task_st_ctx
1340*14b24e2bSVaishali Kulkarni {
1341*14b24e2bSVaishali Kulkarni 	struct scsi_cached_sges data_desc /* Union of Data SGL / cached sge */;
1342*14b24e2bSVaishali Kulkarni 	struct scsi_sgl_params sgl_params;
1343*14b24e2bSVaishali Kulkarni 	__le32 rem_task_size /* Remaining task size, used for placement verification */;
1344*14b24e2bSVaishali Kulkarni 	__le32 data_buffer_offset /* Buffer offset */;
1345*14b24e2bSVaishali Kulkarni 	u8 task_type /* Task type, (use: iscsi_task_type enum) */;
1346*14b24e2bSVaishali Kulkarni 	struct iscsi_dif_flags dif_flags /* sizes of host/peer protection intervals + protection log interval */;
1347*14b24e2bSVaishali Kulkarni 	u8 reserved0[2] /* reserved0 */;
1348*14b24e2bSVaishali Kulkarni 	struct regpair sense_db /* Pointer to sense data buffer */;
1349*14b24e2bSVaishali Kulkarni 	__le32 expected_itt /* ITT - for target mode validations */;
1350*14b24e2bSVaishali Kulkarni 	__le32 reserved1 /* reserved1 */;
1351*14b24e2bSVaishali Kulkarni };
1352*14b24e2bSVaishali Kulkarni 
1353*14b24e2bSVaishali Kulkarni /*
1354*14b24e2bSVaishali Kulkarni  * The iscsi storm task context of Ustorm
1355*14b24e2bSVaishali Kulkarni  */
1356*14b24e2bSVaishali Kulkarni struct ustorm_iscsi_task_st_ctx
1357*14b24e2bSVaishali Kulkarni {
1358*14b24e2bSVaishali Kulkarni 	__le32 rem_rcv_len /* Remaining data to be received in bytes. Used in validations */;
1359*14b24e2bSVaishali Kulkarni 	__le32 exp_data_transfer_len /* iSCSI Initiator - The size of the transmitted task, iSCSI Target - the size of the Rx continuation */;
1360*14b24e2bSVaishali Kulkarni 	__le32 exp_data_sn /* Expected data SN */;
1361*14b24e2bSVaishali Kulkarni 	struct regpair lun /* LUN */;
1362*14b24e2bSVaishali Kulkarni 	struct iscsi_reg1 reg1;
1363*14b24e2bSVaishali Kulkarni 	u8 flags2;
1364*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_AHS_EXIST_MASK              0x1 /* Initiator Mode - Mark AHS exist */
1365*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_AHS_EXIST_SHIFT             0
1366*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_RESERVED1_MASK              0x7F
1367*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_RESERVED1_SHIFT             1
1368*14b24e2bSVaishali Kulkarni 	struct iscsi_dif_flags dif_flags /* Dif flags (written to R2T WQE) */;
1369*14b24e2bSVaishali Kulkarni 	__le16 reserved3;
1370*14b24e2bSVaishali Kulkarni 	__le32 reserved4;
1371*14b24e2bSVaishali Kulkarni 	__le32 reserved5;
1372*14b24e2bSVaishali Kulkarni 	__le32 reserved6;
1373*14b24e2bSVaishali Kulkarni 	__le32 reserved7;
1374*14b24e2bSVaishali Kulkarni 	u8 task_type /* Task Type */;
1375*14b24e2bSVaishali Kulkarni 	u8 error_flags;
1376*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_DATA_DIGEST_ERROR_MASK      0x1 /* Mark task with data digest error (1 bit) */
1377*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_DATA_DIGEST_ERROR_SHIFT     0
1378*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_DATA_TRUNCATED_ERROR_MASK   0x1 /* Target Mode - Mark middle task error, data truncated */
1379*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_DATA_TRUNCATED_ERROR_SHIFT  1
1380*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_UNDER_RUN_ERROR_MASK        0x1
1381*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_UNDER_RUN_ERROR_SHIFT       2
1382*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_RESERVED8_MASK              0x1F
1383*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_RESERVED8_SHIFT             3
1384*14b24e2bSVaishali Kulkarni 	u8 flags;
1385*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_CQE_WRITE_MASK              0x3 /* mark task cqe write (for cleanup flow) */
1386*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_CQE_WRITE_SHIFT             0
1387*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_LOCAL_COMP_MASK             0x1 /* local completion bit */
1388*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_LOCAL_COMP_SHIFT            2
1389*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_Q0_R2TQE_WRITE_MASK         0x1 /* write R2TQE from Q0 flow */
1390*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_Q0_R2TQE_WRITE_SHIFT        3
1391*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_TOTAL_DATA_ACKED_DONE_MASK  0x1 /* Mark total data acked or disabled */
1392*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_TOTAL_DATA_ACKED_DONE_SHIFT 4
1393*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_HQ_SCANNED_DONE_MASK        0x1 /* Mark HQ scanned or disabled */
1394*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_HQ_SCANNED_DONE_SHIFT       5
1395*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_R2T2RECV_DONE_MASK          0x1 /* Mark HQ scanned or disabled */
1396*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_R2T2RECV_DONE_SHIFT         6
1397*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_RESERVED0_MASK              0x1
1398*14b24e2bSVaishali Kulkarni #define USTORM_ISCSI_TASK_ST_CTX_RESERVED0_SHIFT             7
1399*14b24e2bSVaishali Kulkarni 	u8 cq_rss_number /* Task CQ_RSS number 0.63 */;
1400*14b24e2bSVaishali Kulkarni };
1401*14b24e2bSVaishali Kulkarni 
1402*14b24e2bSVaishali Kulkarni /*
1403*14b24e2bSVaishali Kulkarni  * iscsi task context
1404*14b24e2bSVaishali Kulkarni  */
1405*14b24e2bSVaishali Kulkarni struct iscsi_task_context
1406*14b24e2bSVaishali Kulkarni {
1407*14b24e2bSVaishali Kulkarni 	struct ystorm_iscsi_task_st_ctx ystorm_st_context /* ystorm storm context */;
1408*14b24e2bSVaishali Kulkarni 	struct e4_ystorm_iscsi_task_ag_ctx ystorm_ag_context /* ystorm aggregative context */;
1409*14b24e2bSVaishali Kulkarni 	struct regpair ystorm_ag_padding[2] /* padding */;
1410*14b24e2bSVaishali Kulkarni 	struct tdif_task_context tdif_context /* tdif context */;
1411*14b24e2bSVaishali Kulkarni 	struct e4_mstorm_iscsi_task_ag_ctx mstorm_ag_context /* mstorm aggregative context */;
1412*14b24e2bSVaishali Kulkarni 	struct regpair mstorm_ag_padding[2] /* padding */;
1413*14b24e2bSVaishali Kulkarni 	struct e4_ustorm_iscsi_task_ag_ctx ustorm_ag_context /* ustorm aggregative context */;
1414*14b24e2bSVaishali Kulkarni 	struct mstorm_iscsi_task_st_ctx mstorm_st_context /* mstorm storm context */;
1415*14b24e2bSVaishali Kulkarni 	struct ustorm_iscsi_task_st_ctx ustorm_st_context /* ustorm storm context */;
1416*14b24e2bSVaishali Kulkarni 	struct rdif_task_context rdif_context /* rdif context */;
1417*14b24e2bSVaishali Kulkarni };
1418*14b24e2bSVaishali Kulkarni 
1419*14b24e2bSVaishali Kulkarni 
1420*14b24e2bSVaishali Kulkarni 
1421*14b24e2bSVaishali Kulkarni /*
1422*14b24e2bSVaishali Kulkarni  * iSCSI task type
1423*14b24e2bSVaishali Kulkarni  */
1424*14b24e2bSVaishali Kulkarni enum iscsi_task_type
1425*14b24e2bSVaishali Kulkarni {
1426*14b24e2bSVaishali Kulkarni 	ISCSI_TASK_TYPE_INITIATOR_WRITE,
1427*14b24e2bSVaishali Kulkarni 	ISCSI_TASK_TYPE_INITIATOR_READ,
1428*14b24e2bSVaishali Kulkarni 	ISCSI_TASK_TYPE_MIDPATH,
1429*14b24e2bSVaishali Kulkarni 	ISCSI_TASK_TYPE_UNSOLIC,
1430*14b24e2bSVaishali Kulkarni 	ISCSI_TASK_TYPE_EXCHCLEANUP,
1431*14b24e2bSVaishali Kulkarni 	ISCSI_TASK_TYPE_IRRELEVANT,
1432*14b24e2bSVaishali Kulkarni 	ISCSI_TASK_TYPE_TARGET_WRITE,
1433*14b24e2bSVaishali Kulkarni 	ISCSI_TASK_TYPE_TARGET_READ,
1434*14b24e2bSVaishali Kulkarni 	ISCSI_TASK_TYPE_TARGET_RESPONSE,
1435*14b24e2bSVaishali Kulkarni 	ISCSI_TASK_TYPE_LOGIN_RESPONSE,
1436*14b24e2bSVaishali Kulkarni 	MAX_ISCSI_TASK_TYPE
1437*14b24e2bSVaishali Kulkarni };
1438*14b24e2bSVaishali Kulkarni 
1439*14b24e2bSVaishali Kulkarni 
1440*14b24e2bSVaishali Kulkarni 
1441*14b24e2bSVaishali Kulkarni 
1442*14b24e2bSVaishali Kulkarni 
1443*14b24e2bSVaishali Kulkarni 
1444*14b24e2bSVaishali Kulkarni /*
1445*14b24e2bSVaishali Kulkarni  * iSCSI DesiredDataTransferLength/ttt union
1446*14b24e2bSVaishali Kulkarni  */
1447*14b24e2bSVaishali Kulkarni union iscsi_ttt_txlen_union
1448*14b24e2bSVaishali Kulkarni {
1449*14b24e2bSVaishali Kulkarni 	__le32 desired_tx_len /* desired data transfer length */;
1450*14b24e2bSVaishali Kulkarni 	__le32 ttt /* target transfer tag */;
1451*14b24e2bSVaishali Kulkarni };
1452*14b24e2bSVaishali Kulkarni 
1453*14b24e2bSVaishali Kulkarni 
1454*14b24e2bSVaishali Kulkarni /*
1455*14b24e2bSVaishali Kulkarni  * iSCSI uHQ element
1456*14b24e2bSVaishali Kulkarni  */
1457*14b24e2bSVaishali Kulkarni struct iscsi_uhqe
1458*14b24e2bSVaishali Kulkarni {
1459*14b24e2bSVaishali Kulkarni 	__le32 reg1;
1460*14b24e2bSVaishali Kulkarni #define ISCSI_UHQE_PDU_PAYLOAD_LEN_MASK     0xFFFFF /* iSCSI payload (doesnt include padding or digest) or AHS length */
1461*14b24e2bSVaishali Kulkarni #define ISCSI_UHQE_PDU_PAYLOAD_LEN_SHIFT    0
1462*14b24e2bSVaishali Kulkarni #define ISCSI_UHQE_LOCAL_COMP_MASK          0x1 /* local compleiton flag */
1463*14b24e2bSVaishali Kulkarni #define ISCSI_UHQE_LOCAL_COMP_SHIFT         20
1464*14b24e2bSVaishali Kulkarni #define ISCSI_UHQE_TOGGLE_BIT_MASK          0x1 /* toggle bit to protect from uHQ full */
1465*14b24e2bSVaishali Kulkarni #define ISCSI_UHQE_TOGGLE_BIT_SHIFT         21
1466*14b24e2bSVaishali Kulkarni #define ISCSI_UHQE_PURE_PAYLOAD_MASK        0x1 /* indicates whether pdu_payload_len contains pure payload length. if not, pdu_payload_len is AHS length */
1467*14b24e2bSVaishali Kulkarni #define ISCSI_UHQE_PURE_PAYLOAD_SHIFT       22
1468*14b24e2bSVaishali Kulkarni #define ISCSI_UHQE_LOGIN_RESPONSE_PDU_MASK  0x1 /* indicates login pdu */
1469*14b24e2bSVaishali Kulkarni #define ISCSI_UHQE_LOGIN_RESPONSE_PDU_SHIFT 23
1470*14b24e2bSVaishali Kulkarni #define ISCSI_UHQE_TASK_ID_HI_MASK          0xFF /* most significant byte of task_id */
1471*14b24e2bSVaishali Kulkarni #define ISCSI_UHQE_TASK_ID_HI_SHIFT         24
1472*14b24e2bSVaishali Kulkarni 	__le32 reg2;
1473*14b24e2bSVaishali Kulkarni #define ISCSI_UHQE_BUFFER_OFFSET_MASK       0xFFFFFF /* absolute offset in task */
1474*14b24e2bSVaishali Kulkarni #define ISCSI_UHQE_BUFFER_OFFSET_SHIFT      0
1475*14b24e2bSVaishali Kulkarni #define ISCSI_UHQE_TASK_ID_LO_MASK          0xFF /* least significant byte of task_id */
1476*14b24e2bSVaishali Kulkarni #define ISCSI_UHQE_TASK_ID_LO_SHIFT         24
1477*14b24e2bSVaishali Kulkarni };
1478*14b24e2bSVaishali Kulkarni 
1479*14b24e2bSVaishali Kulkarni 
1480*14b24e2bSVaishali Kulkarni /*
1481*14b24e2bSVaishali Kulkarni  * iSCSI WQ element
1482*14b24e2bSVaishali Kulkarni  */
1483*14b24e2bSVaishali Kulkarni struct iscsi_wqe
1484*14b24e2bSVaishali Kulkarni {
1485*14b24e2bSVaishali Kulkarni 	__le16 task_id /* The task identifier (itt) includes all the relevant information required for the task processing */;
1486*14b24e2bSVaishali Kulkarni 	u8 flags;
1487*14b24e2bSVaishali Kulkarni #define ISCSI_WQE_WQE_TYPE_MASK  0x7 /* Wqe type [use iscsi_wqe_type] */
1488*14b24e2bSVaishali Kulkarni #define ISCSI_WQE_WQE_TYPE_SHIFT 0
1489*14b24e2bSVaishali Kulkarni #define ISCSI_WQE_NUM_SGES_MASK  0xF /* The driver will give a hint about sizes of SGEs for better credits evaluation at Xstorm */
1490*14b24e2bSVaishali Kulkarni #define ISCSI_WQE_NUM_SGES_SHIFT 3
1491*14b24e2bSVaishali Kulkarni #define ISCSI_WQE_RESPONSE_MASK  0x1 /* 1 if this Wqe triggers a response and advances stat_sn, 0 otherwise */
1492*14b24e2bSVaishali Kulkarni #define ISCSI_WQE_RESPONSE_SHIFT 7
1493*14b24e2bSVaishali Kulkarni 	struct iscsi_dif_flags prot_flags /* Task data-integrity flags (protection) */;
1494*14b24e2bSVaishali Kulkarni 	__le32 contlen_cdbsize;
1495*14b24e2bSVaishali Kulkarni #define ISCSI_WQE_CONT_LEN_MASK  0xFFFFFF /* expected/desired data transfer length */
1496*14b24e2bSVaishali Kulkarni #define ISCSI_WQE_CONT_LEN_SHIFT 0
1497*14b24e2bSVaishali Kulkarni #define ISCSI_WQE_CDB_SIZE_MASK  0xFF /* Initiator mode only: equals SCSI command CDB size if extended CDB is used, otherwise equals zero.  */
1498*14b24e2bSVaishali Kulkarni #define ISCSI_WQE_CDB_SIZE_SHIFT 24
1499*14b24e2bSVaishali Kulkarni };
1500*14b24e2bSVaishali Kulkarni 
1501*14b24e2bSVaishali Kulkarni 
1502*14b24e2bSVaishali Kulkarni /*
1503*14b24e2bSVaishali Kulkarni  * iSCSI wqe type
1504*14b24e2bSVaishali Kulkarni  */
1505*14b24e2bSVaishali Kulkarni enum iscsi_wqe_type
1506*14b24e2bSVaishali Kulkarni {
1507*14b24e2bSVaishali Kulkarni 	ISCSI_WQE_TYPE_NORMAL /* iSCSI WQE type normal. excluding status bit in target mode. */,
1508*14b24e2bSVaishali Kulkarni 	ISCSI_WQE_TYPE_TASK_CLEANUP /* iSCSI WQE type task cleanup */,
1509*14b24e2bSVaishali Kulkarni 	ISCSI_WQE_TYPE_MIDDLE_PATH /* iSCSI WQE type middle path */,
1510*14b24e2bSVaishali Kulkarni 	ISCSI_WQE_TYPE_LOGIN /* iSCSI WQE type login */,
1511*14b24e2bSVaishali Kulkarni 	ISCSI_WQE_TYPE_FIRST_R2T_CONT /* iSCSI WQE type First Write Continuation (Target) */,
1512*14b24e2bSVaishali Kulkarni 	ISCSI_WQE_TYPE_NONFIRST_R2T_CONT /* iSCSI WQE type Non-First Write Continuation (Target) */,
1513*14b24e2bSVaishali Kulkarni 	ISCSI_WQE_TYPE_RESPONSE /* iSCSI WQE type SCSI response */,
1514*14b24e2bSVaishali Kulkarni 	MAX_ISCSI_WQE_TYPE
1515*14b24e2bSVaishali Kulkarni };
1516*14b24e2bSVaishali Kulkarni 
1517*14b24e2bSVaishali Kulkarni 
1518*14b24e2bSVaishali Kulkarni /*
1519*14b24e2bSVaishali Kulkarni  * iSCSI xHQ element
1520*14b24e2bSVaishali Kulkarni  */
1521*14b24e2bSVaishali Kulkarni struct iscsi_xhqe
1522*14b24e2bSVaishali Kulkarni {
1523*14b24e2bSVaishali Kulkarni 	union iscsi_ttt_txlen_union ttt_or_txlen /* iSCSI DesiredDataTransferLength/ttt union */;
1524*14b24e2bSVaishali Kulkarni 	__le32 exp_stat_sn /* expected StatSn */;
1525*14b24e2bSVaishali Kulkarni 	struct iscsi_dif_flags prot_flags /* Task data-integrity flags (protection) */;
1526*14b24e2bSVaishali Kulkarni 	u8 total_ahs_length /* Initiator mode only: Total AHS Length. greater than zero if and only if PDU is SCSI command and CDB > 16 */;
1527*14b24e2bSVaishali Kulkarni 	u8 opcode /* Type opcode for command PDU */;
1528*14b24e2bSVaishali Kulkarni 	u8 flags;
1529*14b24e2bSVaishali Kulkarni #define ISCSI_XHQE_FINAL_MASK       0x1 /* The Final(F) for this PDU */
1530*14b24e2bSVaishali Kulkarni #define ISCSI_XHQE_FINAL_SHIFT      0
1531*14b24e2bSVaishali Kulkarni #define ISCSI_XHQE_STATUS_BIT_MASK  0x1 /* Whether this PDU is Data-In PDU with status_bit = 1 */
1532*14b24e2bSVaishali Kulkarni #define ISCSI_XHQE_STATUS_BIT_SHIFT 1
1533*14b24e2bSVaishali Kulkarni #define ISCSI_XHQE_NUM_SGES_MASK    0xF /* If Predicted IO equals Min(8, number of SGEs in SGL), otherwise equals 0 */
1534*14b24e2bSVaishali Kulkarni #define ISCSI_XHQE_NUM_SGES_SHIFT   2
1535*14b24e2bSVaishali Kulkarni #define ISCSI_XHQE_RESERVED0_MASK   0x3 /* reserved */
1536*14b24e2bSVaishali Kulkarni #define ISCSI_XHQE_RESERVED0_SHIFT  6
1537*14b24e2bSVaishali Kulkarni 	union iscsi_seq_num seq_num /* R2T/DataSN sequence number */;
1538*14b24e2bSVaishali Kulkarni 	__le16 reserved1;
1539*14b24e2bSVaishali Kulkarni };
1540*14b24e2bSVaishali Kulkarni 
1541*14b24e2bSVaishali Kulkarni 
1542*14b24e2bSVaishali Kulkarni /*
1543*14b24e2bSVaishali Kulkarni  * Per PF iSCSI receive path statistics - mStorm RAM structure
1544*14b24e2bSVaishali Kulkarni  */
1545*14b24e2bSVaishali Kulkarni struct mstorm_iscsi_stats_drv
1546*14b24e2bSVaishali Kulkarni {
1547*14b24e2bSVaishali Kulkarni 	struct regpair iscsi_rx_dropped_PDUs_task_not_valid /* Number of Rx silently dropped PDUs due to task not valid */;
1548*14b24e2bSVaishali Kulkarni };
1549*14b24e2bSVaishali Kulkarni 
1550*14b24e2bSVaishali Kulkarni 
1551*14b24e2bSVaishali Kulkarni 
1552*14b24e2bSVaishali Kulkarni /*
1553*14b24e2bSVaishali Kulkarni  * Per PF iSCSI transmit path statistics - pStorm RAM structure
1554*14b24e2bSVaishali Kulkarni  */
1555*14b24e2bSVaishali Kulkarni struct pstorm_iscsi_stats_drv
1556*14b24e2bSVaishali Kulkarni {
1557*14b24e2bSVaishali Kulkarni 	struct regpair iscsi_tx_bytes_cnt /* Counts the number of tx bytes that were transmitted */;
1558*14b24e2bSVaishali Kulkarni 	struct regpair iscsi_tx_packet_cnt /* Counts the number of tx packets that were transmitted */;
1559*14b24e2bSVaishali Kulkarni };
1560*14b24e2bSVaishali Kulkarni 
1561*14b24e2bSVaishali Kulkarni 
1562*14b24e2bSVaishali Kulkarni /*
1563*14b24e2bSVaishali Kulkarni  * Per PF iSCSI receive path statistics - tStorm RAM structure
1564*14b24e2bSVaishali Kulkarni  */
1565*14b24e2bSVaishali Kulkarni struct tstorm_iscsi_stats_drv
1566*14b24e2bSVaishali Kulkarni {
1567*14b24e2bSVaishali Kulkarni 	struct regpair iscsi_rx_bytes_cnt /* Counts the number of rx bytes that were received */;
1568*14b24e2bSVaishali Kulkarni 	struct regpair iscsi_rx_packet_cnt /* Counts the number of rx packets that were received */;
1569*14b24e2bSVaishali Kulkarni 	struct regpair iscsi_rx_new_ooo_isle_events_cnt /* Counts the number of new out-of-order isle event */;
1570*14b24e2bSVaishali Kulkarni 	__le32 iscsi_cmdq_threshold_cnt /* Counts the number of times elements in cmdQ reached threshold */;
1571*14b24e2bSVaishali Kulkarni 	__le32 iscsi_rq_threshold_cnt /* Counts the number of times elements in RQQ reached threshold */;
1572*14b24e2bSVaishali Kulkarni 	__le32 iscsi_immq_threshold_cnt /* Counts the number of times elements in immQ reached threshold */;
1573*14b24e2bSVaishali Kulkarni };
1574*14b24e2bSVaishali Kulkarni 
1575*14b24e2bSVaishali Kulkarni 
1576*14b24e2bSVaishali Kulkarni /*
1577*14b24e2bSVaishali Kulkarni  * Per PF iSCSI receive path statistics - uStorm RAM structure
1578*14b24e2bSVaishali Kulkarni  */
1579*14b24e2bSVaishali Kulkarni struct ustorm_iscsi_stats_drv
1580*14b24e2bSVaishali Kulkarni {
1581*14b24e2bSVaishali Kulkarni 	struct regpair iscsi_rx_data_pdu_cnt /* Number of data PDUs that were received */;
1582*14b24e2bSVaishali Kulkarni 	struct regpair iscsi_rx_r2t_pdu_cnt /* Number of R2T PDUs that were received */;
1583*14b24e2bSVaishali Kulkarni 	struct regpair iscsi_rx_total_pdu_cnt /* Number of total PDUs that were received */;
1584*14b24e2bSVaishali Kulkarni };
1585*14b24e2bSVaishali Kulkarni 
1586*14b24e2bSVaishali Kulkarni 
1587*14b24e2bSVaishali Kulkarni 
1588*14b24e2bSVaishali Kulkarni /*
1589*14b24e2bSVaishali Kulkarni  * Per PF iSCSI transmit path statistics - xStorm RAM structure
1590*14b24e2bSVaishali Kulkarni  */
1591*14b24e2bSVaishali Kulkarni struct xstorm_iscsi_stats_drv
1592*14b24e2bSVaishali Kulkarni {
1593*14b24e2bSVaishali Kulkarni 	struct regpair iscsi_tx_go_to_slow_start_event_cnt /* Number of times slow start event occurred */;
1594*14b24e2bSVaishali Kulkarni 	struct regpair iscsi_tx_fast_retransmit_event_cnt /* Number of times fast retransmit event occurred */;
1595*14b24e2bSVaishali Kulkarni };
1596*14b24e2bSVaishali Kulkarni 
1597*14b24e2bSVaishali Kulkarni 
1598*14b24e2bSVaishali Kulkarni /*
1599*14b24e2bSVaishali Kulkarni  * Per PF iSCSI transmit path statistics - yStorm RAM structure
1600*14b24e2bSVaishali Kulkarni  */
1601*14b24e2bSVaishali Kulkarni struct ystorm_iscsi_stats_drv
1602*14b24e2bSVaishali Kulkarni {
1603*14b24e2bSVaishali Kulkarni 	struct regpair iscsi_tx_data_pdu_cnt /* Number of data PDUs that were transmitted */;
1604*14b24e2bSVaishali Kulkarni 	struct regpair iscsi_tx_r2t_pdu_cnt /* Number of R2T PDUs that were transmitted */;
1605*14b24e2bSVaishali Kulkarni 	struct regpair iscsi_tx_total_pdu_cnt /* Number of total PDUs that were transmitted */;
1606*14b24e2bSVaishali Kulkarni };
1607*14b24e2bSVaishali Kulkarni 
1608*14b24e2bSVaishali Kulkarni 
1609*14b24e2bSVaishali Kulkarni 
1610*14b24e2bSVaishali Kulkarni 
1611*14b24e2bSVaishali Kulkarni 
1612*14b24e2bSVaishali Kulkarni 
1613*14b24e2bSVaishali Kulkarni struct e4_tstorm_iscsi_task_ag_ctx
1614*14b24e2bSVaishali Kulkarni {
1615*14b24e2bSVaishali Kulkarni 	u8 byte0 /* cdu_validation */;
1616*14b24e2bSVaishali Kulkarni 	u8 byte1 /* state */;
1617*14b24e2bSVaishali Kulkarni 	__le16 word0 /* icid */;
1618*14b24e2bSVaishali Kulkarni 	u8 flags0;
1619*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_MASK  0xF /* connection_type */
1620*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_SHIFT 0
1621*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT0_MASK     0x1 /* exist_in_qm0 */
1622*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT0_SHIFT    4
1623*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT1_MASK     0x1 /* exist_in_qm1 */
1624*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT1_SHIFT    5
1625*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT2_MASK     0x1 /* bit2 */
1626*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT2_SHIFT    6
1627*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT3_MASK     0x1 /* bit3 */
1628*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT3_SHIFT    7
1629*14b24e2bSVaishali Kulkarni 	u8 flags1;
1630*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT4_MASK     0x1 /* bit4 */
1631*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT4_SHIFT    0
1632*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT5_MASK     0x1 /* bit5 */
1633*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT5_SHIFT    1
1634*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF0_MASK      0x3 /* timer0cf */
1635*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF0_SHIFT     2
1636*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF1_MASK      0x3 /* timer1cf */
1637*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF1_SHIFT     4
1638*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF2_MASK      0x3 /* timer2cf */
1639*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF2_SHIFT     6
1640*14b24e2bSVaishali Kulkarni 	u8 flags2;
1641*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF3_MASK      0x3 /* timer_stop_all */
1642*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF3_SHIFT     0
1643*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF4_MASK      0x3 /* cf4 */
1644*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF4_SHIFT     2
1645*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF5_MASK      0x3 /* cf5 */
1646*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF5_SHIFT     4
1647*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF6_MASK      0x3 /* cf6 */
1648*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF6_SHIFT     6
1649*14b24e2bSVaishali Kulkarni 	u8 flags3;
1650*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF7_MASK      0x3 /* cf7 */
1651*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF7_SHIFT     0
1652*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF0EN_MASK    0x1 /* cf0en */
1653*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF0EN_SHIFT   2
1654*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF1EN_MASK    0x1 /* cf1en */
1655*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF1EN_SHIFT   3
1656*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF2EN_MASK    0x1 /* cf2en */
1657*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF2EN_SHIFT   4
1658*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF3EN_MASK    0x1 /* cf3en */
1659*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF3EN_SHIFT   5
1660*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF4EN_MASK    0x1 /* cf4en */
1661*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF4EN_SHIFT   6
1662*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF5EN_MASK    0x1 /* cf5en */
1663*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF5EN_SHIFT   7
1664*14b24e2bSVaishali Kulkarni 	u8 flags4;
1665*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF6EN_MASK    0x1 /* cf6en */
1666*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF6EN_SHIFT   0
1667*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF7EN_MASK    0x1 /* cf7en */
1668*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF7EN_SHIFT   1
1669*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE0EN_MASK  0x1 /* rule0en */
1670*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE0EN_SHIFT 2
1671*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK  0x1 /* rule1en */
1672*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT 3
1673*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE2EN_MASK  0x1 /* rule2en */
1674*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE2EN_SHIFT 4
1675*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK  0x1 /* rule3en */
1676*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT 5
1677*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK  0x1 /* rule4en */
1678*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT 6
1679*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK  0x1 /* rule5en */
1680*14b24e2bSVaishali Kulkarni #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT 7
1681*14b24e2bSVaishali Kulkarni 	u8 byte2 /* byte2 */;
1682*14b24e2bSVaishali Kulkarni 	__le16 word1 /* word1 */;
1683*14b24e2bSVaishali Kulkarni 	__le32 reg0 /* reg0 */;
1684*14b24e2bSVaishali Kulkarni 	u8 byte3 /* byte3 */;
1685*14b24e2bSVaishali Kulkarni 	u8 byte4 /* byte4 */;
1686*14b24e2bSVaishali Kulkarni 	__le16 word2 /* word2 */;
1687*14b24e2bSVaishali Kulkarni 	__le16 word3 /* word3 */;
1688*14b24e2bSVaishali Kulkarni 	__le16 word4 /* word4 */;
1689*14b24e2bSVaishali Kulkarni 	__le32 reg1 /* reg1 */;
1690*14b24e2bSVaishali Kulkarni 	__le32 reg2 /* reg2 */;
1691*14b24e2bSVaishali Kulkarni };
1692*14b24e2bSVaishali Kulkarni 
1693*14b24e2bSVaishali Kulkarni 
1694*14b24e2bSVaishali Kulkarni 
1695*14b24e2bSVaishali Kulkarni 
1696*14b24e2bSVaishali Kulkarni struct e5_mstorm_iscsi_task_ag_ctx
1697*14b24e2bSVaishali Kulkarni {
1698*14b24e2bSVaishali Kulkarni 	u8 cdu_validation /* cdu_validation */;
1699*14b24e2bSVaishali Kulkarni 	u8 byte1 /* state_and_core_id */;
1700*14b24e2bSVaishali Kulkarni 	__le16 task_cid /* icid */;
1701*14b24e2bSVaishali Kulkarni 	u8 flags0;
1702*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_MASK     0xF /* connection_type */
1703*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_SHIFT    0
1704*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_MASK        0x1 /* exist_in_qm0 */
1705*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_SHIFT       4
1706*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_BIT1_MASK                0x1 /* exist_in_qm1 */
1707*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_BIT1_SHIFT               5
1708*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_VALID_MASK               0x1 /* bit2 */
1709*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_VALID_SHIFT              6
1710*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_FLAG_MASK   0x1 /* bit3 */
1711*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_FLAG_SHIFT  7
1712*14b24e2bSVaishali Kulkarni 	u8 flags1;
1713*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_MASK     0x3 /* cf0 */
1714*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_SHIFT    0
1715*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_CF1_MASK                 0x3 /* cf1 */
1716*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_CF1_SHIFT                2
1717*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_CF2_MASK                 0x3 /* cf2 */
1718*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_CF2_SHIFT                4
1719*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_EN_MASK  0x1 /* cf0en */
1720*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_EN_SHIFT 6
1721*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_CF1EN_MASK               0x1 /* cf1en */
1722*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_CF1EN_SHIFT              7
1723*14b24e2bSVaishali Kulkarni 	u8 flags2;
1724*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_CF2EN_MASK               0x1 /* cf2en */
1725*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_CF2EN_SHIFT              0
1726*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_RULE0EN_MASK             0x1 /* rule0en */
1727*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_RULE0EN_SHIFT            1
1728*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK             0x1 /* rule1en */
1729*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT            2
1730*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_RULE2EN_MASK             0x1 /* rule2en */
1731*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_RULE2EN_SHIFT            3
1732*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK             0x1 /* rule3en */
1733*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT            4
1734*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK             0x1 /* rule4en */
1735*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT            5
1736*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK             0x1 /* rule5en */
1737*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT            6
1738*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_RULE6EN_MASK             0x1 /* rule6en */
1739*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_RULE6EN_SHIFT            7
1740*14b24e2bSVaishali Kulkarni 	u8 flags3;
1741*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED1_MASK        0x1 /* bit4 */
1742*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED1_SHIFT       0
1743*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED2_MASK        0x3 /* cf3 */
1744*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED2_SHIFT       1
1745*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED3_MASK        0x3 /* cf4 */
1746*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED3_SHIFT       3
1747*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED4_MASK        0x1 /* cf3en */
1748*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED4_SHIFT       5
1749*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED5_MASK        0x1 /* cf4en */
1750*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED5_SHIFT       6
1751*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED6_MASK        0x1 /* rule7en */
1752*14b24e2bSVaishali Kulkarni #define E5_MSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED6_SHIFT       7
1753*14b24e2bSVaishali Kulkarni 	__le32 reg0 /* reg0 */;
1754*14b24e2bSVaishali Kulkarni 	u8 byte2 /* byte2 */;
1755*14b24e2bSVaishali Kulkarni 	u8 byte3 /* byte3 */;
1756*14b24e2bSVaishali Kulkarni 	u8 byte4 /* byte4 */;
1757*14b24e2bSVaishali Kulkarni 	u8 e4_reserved7 /* byte5 */;
1758*14b24e2bSVaishali Kulkarni };
1759*14b24e2bSVaishali Kulkarni 
1760*14b24e2bSVaishali Kulkarni 
1761*14b24e2bSVaishali Kulkarni struct e5_tstorm_iscsi_task_ag_ctx
1762*14b24e2bSVaishali Kulkarni {
1763*14b24e2bSVaishali Kulkarni 	u8 byte0 /* cdu_validation */;
1764*14b24e2bSVaishali Kulkarni 	u8 byte1 /* state_and_core_id */;
1765*14b24e2bSVaishali Kulkarni 	__le16 word0 /* icid */;
1766*14b24e2bSVaishali Kulkarni 	u8 flags0;
1767*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_MASK  0xF /* connection_type */
1768*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_SHIFT 0
1769*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_BIT0_MASK     0x1 /* exist_in_qm0 */
1770*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_BIT0_SHIFT    4
1771*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_BIT1_MASK     0x1 /* exist_in_qm1 */
1772*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_BIT1_SHIFT    5
1773*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_BIT2_MASK     0x1 /* bit2 */
1774*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_BIT2_SHIFT    6
1775*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_BIT3_MASK     0x1 /* bit3 */
1776*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_BIT3_SHIFT    7
1777*14b24e2bSVaishali Kulkarni 	u8 flags1;
1778*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_BIT4_MASK     0x1 /* bit4 */
1779*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_BIT4_SHIFT    0
1780*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_BIT5_MASK     0x1 /* bit5 */
1781*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_BIT5_SHIFT    1
1782*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF0_MASK      0x3 /* timer0cf */
1783*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF0_SHIFT     2
1784*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF1_MASK      0x3 /* timer1cf */
1785*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF1_SHIFT     4
1786*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF2_MASK      0x3 /* timer2cf */
1787*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF2_SHIFT     6
1788*14b24e2bSVaishali Kulkarni 	u8 flags2;
1789*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF3_MASK      0x3 /* timer_stop_all */
1790*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF3_SHIFT     0
1791*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF4_MASK      0x3 /* cf4 */
1792*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF4_SHIFT     2
1793*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF5_MASK      0x3 /* cf5 */
1794*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF5_SHIFT     4
1795*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF6_MASK      0x3 /* cf6 */
1796*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF6_SHIFT     6
1797*14b24e2bSVaishali Kulkarni 	u8 flags3;
1798*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF7_MASK      0x3 /* cf7 */
1799*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF7_SHIFT     0
1800*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF0EN_MASK    0x1 /* cf0en */
1801*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF0EN_SHIFT   2
1802*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF1EN_MASK    0x1 /* cf1en */
1803*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF1EN_SHIFT   3
1804*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF2EN_MASK    0x1 /* cf2en */
1805*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF2EN_SHIFT   4
1806*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF3EN_MASK    0x1 /* cf3en */
1807*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF3EN_SHIFT   5
1808*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF4EN_MASK    0x1 /* cf4en */
1809*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF4EN_SHIFT   6
1810*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF5EN_MASK    0x1 /* cf5en */
1811*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF5EN_SHIFT   7
1812*14b24e2bSVaishali Kulkarni 	u8 flags4;
1813*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF6EN_MASK    0x1 /* cf6en */
1814*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF6EN_SHIFT   0
1815*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF7EN_MASK    0x1 /* cf7en */
1816*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_CF7EN_SHIFT   1
1817*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_RULE0EN_MASK  0x1 /* rule0en */
1818*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_RULE0EN_SHIFT 2
1819*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK  0x1 /* rule1en */
1820*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT 3
1821*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_RULE2EN_MASK  0x1 /* rule2en */
1822*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_RULE2EN_SHIFT 4
1823*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK  0x1 /* rule3en */
1824*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT 5
1825*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK  0x1 /* rule4en */
1826*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT 6
1827*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK  0x1 /* rule5en */
1828*14b24e2bSVaishali Kulkarni #define E5_TSTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT 7
1829*14b24e2bSVaishali Kulkarni 	u8 byte2 /* byte2 */;
1830*14b24e2bSVaishali Kulkarni 	__le16 word1 /* word1 */;
1831*14b24e2bSVaishali Kulkarni 	__le32 reg0 /* reg0 */;
1832*14b24e2bSVaishali Kulkarni 	u8 byte3 /* regpair0 */;
1833*14b24e2bSVaishali Kulkarni 	u8 byte4 /* byte4 */;
1834*14b24e2bSVaishali Kulkarni 	__le16 word2 /* word2 */;
1835*14b24e2bSVaishali Kulkarni 	__le16 word3 /* word3 */;
1836*14b24e2bSVaishali Kulkarni 	__le16 word4 /* word4 */;
1837*14b24e2bSVaishali Kulkarni 	__le32 reg1 /* regpair1 */;
1838*14b24e2bSVaishali Kulkarni 	__le32 reg2 /* reg2 */;
1839*14b24e2bSVaishali Kulkarni };
1840*14b24e2bSVaishali Kulkarni 
1841*14b24e2bSVaishali Kulkarni 
1842*14b24e2bSVaishali Kulkarni struct e5_ustorm_iscsi_task_ag_ctx
1843*14b24e2bSVaishali Kulkarni {
1844*14b24e2bSVaishali Kulkarni 	u8 reserved /* cdu_validation */;
1845*14b24e2bSVaishali Kulkarni 	u8 state_and_core_id /* state_and_core_id */;
1846*14b24e2bSVaishali Kulkarni 	__le16 icid /* icid */;
1847*14b24e2bSVaishali Kulkarni 	u8 flags0;
1848*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_MASK        0xF /* connection_type */
1849*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_SHIFT       0
1850*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_MASK           0x1 /* exist_in_qm0 */
1851*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_SHIFT          4
1852*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_BIT1_MASK                   0x1 /* exist_in_qm1 */
1853*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_BIT1_SHIFT                  5
1854*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_MASK          0x3 /* timer0cf */
1855*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_SHIFT         6
1856*14b24e2bSVaishali Kulkarni 	u8 flags1;
1857*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_RESERVED1_MASK              0x3 /* timer1cf */
1858*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_RESERVED1_SHIFT             0
1859*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_MASK               0x3 /* timer2cf */
1860*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_SHIFT              2
1861*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_CF3_MASK                    0x3 /* timer_stop_all */
1862*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_CF3_SHIFT                   4
1863*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_MASK           0x3 /* dif_error_cf */
1864*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_SHIFT          6
1865*14b24e2bSVaishali Kulkarni 	u8 flags2;
1866*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_EN_MASK       0x1 /* cf0en */
1867*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_EN_SHIFT      0
1868*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_DISABLE_DATA_ACKED_MASK     0x1 /* cf1en */
1869*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_DISABLE_DATA_ACKED_SHIFT    1
1870*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_EN_MASK            0x1 /* cf2en */
1871*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_EN_SHIFT           2
1872*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_CF3EN_MASK                  0x1 /* cf3en */
1873*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_CF3EN_SHIFT                 3
1874*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_EN_MASK        0x1 /* cf4en */
1875*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_EN_SHIFT       4
1876*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_CMP_DATA_TOTAL_EXP_EN_MASK  0x1 /* rule0en */
1877*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_CMP_DATA_TOTAL_EXP_EN_SHIFT 5
1878*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK                0x1 /* rule1en */
1879*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT               6
1880*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_CMP_CONT_RCV_EXP_EN_MASK    0x1 /* rule2en */
1881*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_CMP_CONT_RCV_EXP_EN_SHIFT   7
1882*14b24e2bSVaishali Kulkarni 	u8 flags3;
1883*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK                0x1 /* rule3en */
1884*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT               0
1885*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK                0x1 /* rule4en */
1886*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT               1
1887*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK                0x1 /* rule5en */
1888*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT               2
1889*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_RULE6EN_MASK                0x1 /* rule6en */
1890*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_RULE6EN_SHIFT               3
1891*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_E4_RESERVED1_MASK           0x1 /* bit2 */
1892*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_E4_RESERVED1_SHIFT          4
1893*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_E4_RESERVED2_MASK           0x1 /* bit3 */
1894*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_E4_RESERVED2_SHIFT          5
1895*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_E4_RESERVED3_MASK           0x1 /* bit4 */
1896*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_E4_RESERVED3_SHIFT          6
1897*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_E4_RESERVED4_MASK           0x1 /* rule7en */
1898*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_E4_RESERVED4_SHIFT          7
1899*14b24e2bSVaishali Kulkarni 	u8 flags4;
1900*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_E4_RESERVED5_MASK           0x3 /* cf5 */
1901*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_E4_RESERVED5_SHIFT          0
1902*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_E4_RESERVED6_MASK           0x1 /* cf5en */
1903*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_E4_RESERVED6_SHIFT          2
1904*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_E4_RESERVED7_MASK           0x1 /* rule8en */
1905*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_E4_RESERVED7_SHIFT          3
1906*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_TYPE_MASK         0xF /* dif_error_type */
1907*14b24e2bSVaishali Kulkarni #define E5_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_TYPE_SHIFT        4
1908*14b24e2bSVaishali Kulkarni 	u8 next_tid_valid /* byte2 */;
1909*14b24e2bSVaishali Kulkarni 	u8 byte3 /* byte3 */;
1910*14b24e2bSVaishali Kulkarni 	u8 e4_reserved8 /* byte4 */;
1911*14b24e2bSVaishali Kulkarni 	__le32 dif_err_intervals /* dif_err_intervals */;
1912*14b24e2bSVaishali Kulkarni 	__le32 dif_error_1st_interval /* dif_error_1st_interval */;
1913*14b24e2bSVaishali Kulkarni 	__le32 rcv_cont_len /* reg2 */;
1914*14b24e2bSVaishali Kulkarni 	__le32 exp_cont_len /* reg3 */;
1915*14b24e2bSVaishali Kulkarni 	__le32 total_data_acked /* reg4 */;
1916*14b24e2bSVaishali Kulkarni 	__le32 exp_data_acked /* reg5 */;
1917*14b24e2bSVaishali Kulkarni 	__le16 word1 /* word1 */;
1918*14b24e2bSVaishali Kulkarni 	__le16 next_tid /* word2 */;
1919*14b24e2bSVaishali Kulkarni 	__le32 hdr_residual_count /* reg6 */;
1920*14b24e2bSVaishali Kulkarni 	__le32 exp_r2t_sn /* reg7 */;
1921*14b24e2bSVaishali Kulkarni };
1922*14b24e2bSVaishali Kulkarni 
1923*14b24e2bSVaishali Kulkarni 
1924*14b24e2bSVaishali Kulkarni struct e5_ystorm_iscsi_task_ag_ctx
1925*14b24e2bSVaishali Kulkarni {
1926*14b24e2bSVaishali Kulkarni 	u8 reserved /* cdu_validation */;
1927*14b24e2bSVaishali Kulkarni 	u8 byte1 /* state_and_core_id */;
1928*14b24e2bSVaishali Kulkarni 	__le16 word0 /* icid */;
1929*14b24e2bSVaishali Kulkarni 	u8 flags0;
1930*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_MASK       0xF /* connection_type */
1931*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_SHIFT      0
1932*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_BIT0_MASK          0x1 /* exist_in_qm0 */
1933*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_BIT0_SHIFT         4
1934*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_BIT1_MASK          0x1 /* exist_in_qm1 */
1935*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_BIT1_SHIFT         5
1936*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_VALID_MASK         0x1 /* bit2 */
1937*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_VALID_SHIFT        6
1938*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_BIT3_MASK          0x1 /* bit3 */
1939*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_BIT3_SHIFT         7
1940*14b24e2bSVaishali Kulkarni 	u8 flags1;
1941*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_CF0_MASK           0x3 /* cf0 */
1942*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_CF0_SHIFT          0
1943*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_CF1_MASK           0x3 /* cf1 */
1944*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_CF1_SHIFT          2
1945*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_CF2SPECIAL_MASK    0x3 /* cf2special */
1946*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_CF2SPECIAL_SHIFT   4
1947*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_CF0EN_MASK         0x1 /* cf0en */
1948*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_CF0EN_SHIFT        6
1949*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_CF1EN_MASK         0x1 /* cf1en */
1950*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_CF1EN_SHIFT        7
1951*14b24e2bSVaishali Kulkarni 	u8 flags2;
1952*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_BIT4_MASK          0x1 /* bit4 */
1953*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_BIT4_SHIFT         0
1954*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_RULE0EN_MASK       0x1 /* rule0en */
1955*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_RULE0EN_SHIFT      1
1956*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK       0x1 /* rule1en */
1957*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT      2
1958*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_RULE2EN_MASK       0x1 /* rule2en */
1959*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_RULE2EN_SHIFT      3
1960*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK       0x1 /* rule3en */
1961*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT      4
1962*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK       0x1 /* rule4en */
1963*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT      5
1964*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK       0x1 /* rule5en */
1965*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT      6
1966*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_RULE6EN_MASK       0x1 /* rule6en */
1967*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_RULE6EN_SHIFT      7
1968*14b24e2bSVaishali Kulkarni 	u8 flags3;
1969*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED1_MASK  0x1 /* bit5 */
1970*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED1_SHIFT 0
1971*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED2_MASK  0x3 /* cf3 */
1972*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED2_SHIFT 1
1973*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED3_MASK  0x3 /* cf4 */
1974*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED3_SHIFT 3
1975*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED4_MASK  0x1 /* cf3en */
1976*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED4_SHIFT 5
1977*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED5_MASK  0x1 /* cf4en */
1978*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED5_SHIFT 6
1979*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED6_MASK  0x1 /* rule7en */
1980*14b24e2bSVaishali Kulkarni #define E5_YSTORM_ISCSI_TASK_AG_CTX_E4_RESERVED6_SHIFT 7
1981*14b24e2bSVaishali Kulkarni 	__le32 TTT /* reg0 */;
1982*14b24e2bSVaishali Kulkarni 	u8 byte2 /* byte2 */;
1983*14b24e2bSVaishali Kulkarni 	u8 byte3 /* byte3 */;
1984*14b24e2bSVaishali Kulkarni 	u8 byte4 /* byte4 */;
1985*14b24e2bSVaishali Kulkarni 	u8 e4_reserved7 /* byte5 */;
1986*14b24e2bSVaishali Kulkarni };
1987*14b24e2bSVaishali Kulkarni 
1988*14b24e2bSVaishali Kulkarni 
1989*14b24e2bSVaishali Kulkarni /*
1990*14b24e2bSVaishali Kulkarni  * iSCSI doorbell data
1991*14b24e2bSVaishali Kulkarni  */
1992*14b24e2bSVaishali Kulkarni struct iscsi_db_data
1993*14b24e2bSVaishali Kulkarni {
1994*14b24e2bSVaishali Kulkarni 	u8 params;
1995*14b24e2bSVaishali Kulkarni #define ISCSI_DB_DATA_DEST_MASK         0x3 /* destination of doorbell (use enum db_dest) */
1996*14b24e2bSVaishali Kulkarni #define ISCSI_DB_DATA_DEST_SHIFT        0
1997*14b24e2bSVaishali Kulkarni #define ISCSI_DB_DATA_AGG_CMD_MASK      0x3 /* aggregative command to CM (use enum db_agg_cmd_sel) */
1998*14b24e2bSVaishali Kulkarni #define ISCSI_DB_DATA_AGG_CMD_SHIFT     2
1999*14b24e2bSVaishali Kulkarni #define ISCSI_DB_DATA_BYPASS_EN_MASK    0x1 /* enable QM bypass */
2000*14b24e2bSVaishali Kulkarni #define ISCSI_DB_DATA_BYPASS_EN_SHIFT   4
2001*14b24e2bSVaishali Kulkarni #define ISCSI_DB_DATA_RESERVED_MASK     0x1
2002*14b24e2bSVaishali Kulkarni #define ISCSI_DB_DATA_RESERVED_SHIFT    5
2003*14b24e2bSVaishali Kulkarni #define ISCSI_DB_DATA_AGG_VAL_SEL_MASK  0x3 /* aggregative value selection */
2004*14b24e2bSVaishali Kulkarni #define ISCSI_DB_DATA_AGG_VAL_SEL_SHIFT 6
2005*14b24e2bSVaishali Kulkarni 	u8 agg_flags /* bit for every DQ counter flags in CM context that DQ can increment */;
2006*14b24e2bSVaishali Kulkarni 	__le16 sq_prod;
2007*14b24e2bSVaishali Kulkarni };
2008*14b24e2bSVaishali Kulkarni 
2009*14b24e2bSVaishali Kulkarni #endif /* __ISCSI_COMMON__ */
2010