Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2)  * Copyright (c) 2005 Cisco Systems.  All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * This software is available to you under a choice of one of two
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * licenses.  You may choose to be licensed under the terms of the GNU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * General Public License (GPL) Version 2, available from the file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * COPYING in the main directory of this source tree, or the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  * OpenIB.org BSD license below:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  *     Redistribution and use in source and binary forms, with or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  *     without modification, are permitted provided that the following
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  *     conditions are met:
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^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14)  *      - Redistributions of source code must retain the above
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^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16)  *        disclaimer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18)  *      - Redistributions in binary form must reproduce the above
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19)  *        copyright notice, this list of conditions and the following
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20)  *        disclaimer in the documentation and/or other materials
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^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23)  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24)  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25)  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26)  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27)  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30)  * SOFTWARE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32)  * $Id$
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #ifndef SCSI_SRP_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #define SCSI_SRP_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39)  * Structures and constants for the SCSI RDMA Protocol (SRP) as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40)  * defined by the INCITS T10 committee.  This file was written using
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41)  * draft Revision 16a of the SRP standard.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) #include <scsi/scsi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	SRP_LOGIN_REQ	= 0x00,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	SRP_TSK_MGMT	= 0x01,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	SRP_CMD		= 0x02,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	SRP_I_LOGOUT	= 0x03,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	SRP_LOGIN_RSP	= 0xc0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	SRP_RSP		= 0xc1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	SRP_LOGIN_REJ	= 0xc2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	SRP_T_LOGOUT	= 0x80,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	SRP_CRED_REQ	= 0x81,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	SRP_AER_REQ	= 0x82,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	SRP_CRED_RSP	= 0x41,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	SRP_AER_RSP	= 0x42
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	SRP_BUF_FORMAT_DIRECT	= 1 << 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	SRP_BUF_FORMAT_INDIRECT	= 1 << 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	SRP_NO_DATA_DESC	= 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	SRP_DATA_DESC_DIRECT	= 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	SRP_DATA_DESC_INDIRECT	= 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	SRP_DATA_DESC_IMM	= 3,	/* new in SRP2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	SRP_TSK_ABORT_TASK	= 0x01,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	SRP_TSK_ABORT_TASK_SET	= 0x02,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	SRP_TSK_CLEAR_TASK_SET	= 0x04,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	SRP_TSK_LUN_RESET	= 0x08,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	SRP_TSK_CLEAR_ACA	= 0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) enum srp_login_rej_reason {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	SRP_LOGIN_REJ_UNABLE_ESTABLISH_CHANNEL		= 0x00010000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	SRP_LOGIN_REJ_INSUFFICIENT_RESOURCES		= 0x00010001,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	SRP_LOGIN_REJ_REQ_IT_IU_LENGTH_TOO_LARGE	= 0x00010002,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	SRP_LOGIN_REJ_UNABLE_ASSOCIATE_CHANNEL		= 0x00010003,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	SRP_LOGIN_REJ_UNSUPPORTED_DESCRIPTOR_FMT	= 0x00010004,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	SRP_LOGIN_REJ_MULTI_CHANNEL_UNSUPPORTED		= 0x00010005,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	SRP_LOGIN_REJ_CHANNEL_LIMIT_REACHED		= 0x00010006
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	SRP_REV10_IB_IO_CLASS	= 0xff00,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	SRP_REV16A_IB_IO_CLASS	= 0x0100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) struct srp_direct_buf {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	__be64	va;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	__be32	key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	__be32  len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)  * We need the packed attribute because the SRP spec puts the list of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)  * descriptors at an offset of 20, which is not aligned to the size of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)  * struct srp_direct_buf.  The whole structure must be packed to avoid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)  * having the 20-byte structure padded to 24 bytes on 64-bit architectures.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct srp_indirect_buf {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	struct srp_direct_buf	table_desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	__be32			len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	struct srp_direct_buf	desc_list[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) } __attribute__((packed));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) /* Immediate data buffer descriptor as defined in SRP2. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) struct srp_imm_buf {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	__be32	len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) /* srp_login_req.flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	SRP_MULTICHAN_SINGLE = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	SRP_MULTICHAN_MULTI  = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	SRP_IMMED_REQUESTED  = 0x80,	/* new in SRP2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) struct srp_login_req {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	u8	opcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	u8	reserved1[7];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	u64	tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	__be32	req_it_iu_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	u8	reserved2[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	__be16	req_buf_fmt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	u8	req_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	u8	reserved3[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	__be16	imm_data_offset;	/* new in SRP2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	u8	reserved4[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	u8	initiator_port_id[16];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	u8	target_port_id[16];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)  * struct srp_login_req_rdma - RDMA/CM login parameters.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)  * RDMA/CM over InfiniBand can only carry 92 - 36 = 56 bytes of private
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)  * data. The %srp_login_req_rdma structure contains the same information as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)  * %srp_login_req but with the reserved data removed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) struct srp_login_req_rdma {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	u64	tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	__be16	req_buf_fmt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	u8	req_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	u8	opcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	__be32	req_it_iu_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	u8	initiator_port_id[16];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	u8	target_port_id[16];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	__be16	imm_data_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	u8	reserved[6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) /* srp_login_rsp.rsp_flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	SRP_LOGIN_RSP_MULTICHAN_NO_CHAN	   = 0x0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	SRP_LOGIN_RSP_MULTICHAN_TERMINATED = 0x1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	SRP_LOGIN_RSP_MULTICHAN_MAINTAINED = 0x2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	SRP_LOGIN_RSP_IMMED_SUPP	   = 0x80, /* new in SRP2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)  * The SRP spec defines the size of the LOGIN_RSP structure to be 52
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)  * bytes, so it needs to be packed to avoid having it padded to 56
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)  * bytes on 64-bit architectures.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) struct srp_login_rsp {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	u8	opcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	u8	reserved1[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	__be32	req_lim_delta;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	u64	tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	__be32	max_it_iu_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	__be32	max_ti_iu_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	__be16	buf_fmt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	u8	rsp_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	u8	reserved2[25];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) } __attribute__((packed));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) struct srp_login_rej {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	u8	opcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	u8	reserved1[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	__be32	reason;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	u64	tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	u8	reserved2[8];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	__be16	buf_fmt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	u8	reserved3[6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) struct srp_i_logout {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	u8	opcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	u8	reserved[7];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	u64	tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) struct srp_t_logout {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	u8	opcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	u8	sol_not;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	u8	reserved[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	__be32	reason;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	u64	tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)  * We need the packed attribute because the SRP spec only aligns the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)  * 8-byte LUN field to 4 bytes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) struct srp_tsk_mgmt {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	u8	opcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	u8	sol_not;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	u8	reserved1[6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	u64	tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	u8	reserved2[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	struct scsi_lun	lun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	u8	reserved3[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	u8	tsk_mgmt_func;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	u8	reserved4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	u64	task_tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	u8	reserved5[8];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)  * We need the packed attribute because the SRP spec only aligns the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)  * 8-byte LUN field to 4 bytes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) struct srp_cmd {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	u8	opcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	u8	sol_not;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	u8	reserved1[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	u8	buf_fmt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	u8	data_out_desc_cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	u8	data_in_desc_cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	u64	tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	u8	reserved2[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	struct scsi_lun	lun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	u8	reserved3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	u8	task_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	u8	reserved4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	u8	add_cdb_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	u8	cdb[16];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	u8	add_data[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	SRP_RSP_FLAG_RSPVALID = 1 << 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	SRP_RSP_FLAG_SNSVALID = 1 << 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	SRP_RSP_FLAG_DOOVER   = 1 << 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	SRP_RSP_FLAG_DOUNDER  = 1 << 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	SRP_RSP_FLAG_DIOVER   = 1 << 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	SRP_RSP_FLAG_DIUNDER  = 1 << 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)  * The SRP spec defines the size of the RSP structure to be 36 bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)  * so it needs to be packed to avoid having it padded to 40 bytes on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)  * 64-bit architectures.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) struct srp_rsp {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	u8	opcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	u8	sol_not;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	u8	reserved1[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	__be32	req_lim_delta;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	u64	tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	u8	reserved2[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	u8	flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	u8	status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	__be32	data_out_res_cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	__be32	data_in_res_cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	__be32	sense_data_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	__be32	resp_data_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	u8	data[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) } __attribute__((packed));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) struct srp_cred_req {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	u8	opcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	u8	sol_not;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	u8	reserved[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	__be32	req_lim_delta;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	u64	tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) struct srp_cred_rsp {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	u8	opcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	u8	reserved[7];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	u64	tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)  * The SRP spec defines the fixed portion of the AER_REQ structure to be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)  * 36 bytes, so it needs to be packed to avoid having it padded to 40 bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)  * on 64-bit architectures.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) struct srp_aer_req {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 	u8	opcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 	u8	sol_not;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	u8	reserved[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 	__be32	req_lim_delta;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	u64	tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 	u32	reserved2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 	struct scsi_lun	lun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	__be32	sense_data_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 	u32	reserved3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 	u8	sense_data[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) } __attribute__((packed));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) struct srp_aer_rsp {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 	u8	opcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 	u8	reserved[7];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 	u64	tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) #endif /* SCSI_SRP_H */