mirror of
https://gitlab.com/qemu-project/qemu
synced 2024-11-05 20:35:44 +00:00
eb37f14658
At the moment the guest kernel issues two types of task management requests to the hypervisor - task about and lun reset. This adds handling for these tasks. As spapr-vscsi starts calling scsi_req_cancel(), free_request callback was implemented. As virtio-vscsi, spapr-vscsi does not handle CLEAR_ACA either as CDB control byte does not seem to be used at all so NACA bit is not set to the guest so the guest has no good reason to call CLEAR_ACA task. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> [Fix choice of UCSOLCNT vs. SCSOLCNT. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
247 lines
6.5 KiB
C
247 lines
6.5 KiB
C
/*
|
|
* Copyright (c) 2005 Cisco Systems. All rights reserved.
|
|
*
|
|
* This software is available to you under a choice of one of two
|
|
* licenses. You may choose to be licensed under the terms of the GNU
|
|
* General Public License (GPL) Version 2, available from the file
|
|
* COPYING in the main directory of this source tree, or the
|
|
* OpenIB.org BSD license below:
|
|
*
|
|
* Redistribution and use in source and binary forms, with or
|
|
* without modification, are permitted provided that the following
|
|
* conditions are met:
|
|
*
|
|
* - Redistributions of source code must retain the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer.
|
|
*
|
|
* - Redistributions in binary form must reproduce the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer in the documentation and/or other materials
|
|
* provided with the distribution.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*
|
|
*/
|
|
|
|
#ifndef SCSI_SRP_H
|
|
#define SCSI_SRP_H
|
|
|
|
/*
|
|
* Structures and constants for the SCSI RDMA Protocol (SRP) as
|
|
* defined by the INCITS T10 committee. This file was written using
|
|
* draft Revision 16a of the SRP standard.
|
|
*/
|
|
|
|
enum {
|
|
|
|
SRP_LOGIN_REQ = 0x00,
|
|
SRP_TSK_MGMT = 0x01,
|
|
SRP_CMD = 0x02,
|
|
SRP_I_LOGOUT = 0x03,
|
|
SRP_LOGIN_RSP = 0xc0,
|
|
SRP_RSP = 0xc1,
|
|
SRP_LOGIN_REJ = 0xc2,
|
|
SRP_T_LOGOUT = 0x80,
|
|
SRP_CRED_REQ = 0x81,
|
|
SRP_AER_REQ = 0x82,
|
|
SRP_CRED_RSP = 0x41,
|
|
SRP_AER_RSP = 0x42
|
|
};
|
|
|
|
enum {
|
|
SRP_BUF_FORMAT_DIRECT = 1 << 1,
|
|
SRP_BUF_FORMAT_INDIRECT = 1 << 2
|
|
};
|
|
|
|
enum {
|
|
SRP_NO_DATA_DESC = 0,
|
|
SRP_DATA_DESC_DIRECT = 1,
|
|
SRP_DATA_DESC_INDIRECT = 2
|
|
};
|
|
|
|
enum {
|
|
SRP_TSK_ABORT_TASK = 0x01,
|
|
SRP_TSK_ABORT_TASK_SET = 0x02,
|
|
SRP_TSK_CLEAR_TASK_SET = 0x04,
|
|
SRP_TSK_LUN_RESET = 0x08,
|
|
SRP_TSK_CLEAR_ACA = 0x40
|
|
};
|
|
|
|
enum srp_login_rej_reason {
|
|
SRP_LOGIN_REJ_UNABLE_ESTABLISH_CHANNEL = 0x00010000,
|
|
SRP_LOGIN_REJ_INSUFFICIENT_RESOURCES = 0x00010001,
|
|
SRP_LOGIN_REJ_REQ_IT_IU_LENGTH_TOO_LARGE = 0x00010002,
|
|
SRP_LOGIN_REJ_UNABLE_ASSOCIATE_CHANNEL = 0x00010003,
|
|
SRP_LOGIN_REJ_UNSUPPORTED_DESCRIPTOR_FMT = 0x00010004,
|
|
SRP_LOGIN_REJ_MULTI_CHANNEL_UNSUPPORTED = 0x00010005,
|
|
SRP_LOGIN_REJ_CHANNEL_LIMIT_REACHED = 0x00010006
|
|
};
|
|
|
|
enum {
|
|
SRP_REV10_IB_IO_CLASS = 0xff00,
|
|
SRP_REV16A_IB_IO_CLASS = 0x0100
|
|
};
|
|
|
|
enum {
|
|
SRP_TSK_MGMT_COMPLETE = 0x00,
|
|
SRP_TSK_MGMT_FIELDS_INVALID = 0x02,
|
|
SRP_TSK_MGMT_NOT_SUPPORTED = 0x04,
|
|
SRP_TSK_MGMT_FAILED = 0x05
|
|
};
|
|
|
|
struct srp_direct_buf {
|
|
uint64_t va;
|
|
uint32_t key;
|
|
uint32_t len;
|
|
};
|
|
|
|
/*
|
|
* We need the packed attribute because the SRP spec puts the list of
|
|
* descriptors at an offset of 20, which is not aligned to the size of
|
|
* struct srp_direct_buf. The whole structure must be packed to avoid
|
|
* having the 20-byte structure padded to 24 bytes on 64-bit architectures.
|
|
*/
|
|
struct srp_indirect_buf {
|
|
struct srp_direct_buf table_desc;
|
|
uint32_t len;
|
|
struct srp_direct_buf desc_list[0];
|
|
} QEMU_PACKED;
|
|
|
|
enum {
|
|
SRP_MULTICHAN_SINGLE = 0,
|
|
SRP_MULTICHAN_MULTI = 1
|
|
};
|
|
|
|
struct srp_login_req {
|
|
uint8_t opcode;
|
|
uint8_t reserved1[7];
|
|
uint64_t tag;
|
|
uint32_t req_it_iu_len;
|
|
uint8_t reserved2[4];
|
|
uint16_t req_buf_fmt;
|
|
uint8_t req_flags;
|
|
uint8_t reserved3[5];
|
|
uint8_t initiator_port_id[16];
|
|
uint8_t target_port_id[16];
|
|
};
|
|
|
|
/*
|
|
* The SRP spec defines the size of the LOGIN_RSP structure to be 52
|
|
* bytes, so it needs to be packed to avoid having it padded to 56
|
|
* bytes on 64-bit architectures.
|
|
*/
|
|
struct srp_login_rsp {
|
|
uint8_t opcode;
|
|
uint8_t reserved1[3];
|
|
uint32_t req_lim_delta;
|
|
uint64_t tag;
|
|
uint32_t max_it_iu_len;
|
|
uint32_t max_ti_iu_len;
|
|
uint16_t buf_fmt;
|
|
uint8_t rsp_flags;
|
|
uint8_t reserved2[25];
|
|
} QEMU_PACKED;
|
|
|
|
struct srp_login_rej {
|
|
uint8_t opcode;
|
|
uint8_t reserved1[3];
|
|
uint32_t reason;
|
|
uint64_t tag;
|
|
uint8_t reserved2[8];
|
|
uint16_t buf_fmt;
|
|
uint8_t reserved3[6];
|
|
};
|
|
|
|
struct srp_i_logout {
|
|
uint8_t opcode;
|
|
uint8_t reserved[7];
|
|
uint64_t tag;
|
|
};
|
|
|
|
struct srp_t_logout {
|
|
uint8_t opcode;
|
|
uint8_t sol_not;
|
|
uint8_t reserved[2];
|
|
uint32_t reason;
|
|
uint64_t tag;
|
|
};
|
|
|
|
/*
|
|
* We need the packed attribute because the SRP spec only aligns the
|
|
* 8-byte LUN field to 4 bytes.
|
|
*/
|
|
struct srp_tsk_mgmt {
|
|
uint8_t opcode;
|
|
uint8_t sol_not;
|
|
uint8_t reserved1[6];
|
|
uint64_t tag;
|
|
uint8_t reserved2[4];
|
|
uint64_t lun;
|
|
uint8_t reserved3[2];
|
|
uint8_t tsk_mgmt_func;
|
|
uint8_t reserved4;
|
|
uint64_t task_tag;
|
|
uint8_t reserved5[8];
|
|
} QEMU_PACKED;
|
|
|
|
/*
|
|
* We need the packed attribute because the SRP spec only aligns the
|
|
* 8-byte LUN field to 4 bytes.
|
|
*/
|
|
struct srp_cmd {
|
|
uint8_t opcode;
|
|
uint8_t sol_not;
|
|
uint8_t reserved1[3];
|
|
uint8_t buf_fmt;
|
|
uint8_t data_out_desc_cnt;
|
|
uint8_t data_in_desc_cnt;
|
|
uint64_t tag;
|
|
uint8_t reserved2[4];
|
|
uint64_t lun;
|
|
uint8_t reserved3;
|
|
uint8_t task_attr;
|
|
uint8_t reserved4;
|
|
uint8_t add_cdb_len;
|
|
uint8_t cdb[16];
|
|
uint8_t add_data[0];
|
|
} QEMU_PACKED;
|
|
|
|
enum {
|
|
SRP_RSP_FLAG_RSPVALID = 1 << 0,
|
|
SRP_RSP_FLAG_SNSVALID = 1 << 1,
|
|
SRP_RSP_FLAG_DOOVER = 1 << 2,
|
|
SRP_RSP_FLAG_DOUNDER = 1 << 3,
|
|
SRP_RSP_FLAG_DIOVER = 1 << 4,
|
|
SRP_RSP_FLAG_DIUNDER = 1 << 5
|
|
};
|
|
|
|
/*
|
|
* The SRP spec defines the size of the RSP structure to be 36 bytes,
|
|
* so it needs to be packed to avoid having it padded to 40 bytes on
|
|
* 64-bit architectures.
|
|
*/
|
|
struct srp_rsp {
|
|
uint8_t opcode;
|
|
uint8_t sol_not;
|
|
uint8_t reserved1[2];
|
|
uint32_t req_lim_delta;
|
|
uint64_t tag;
|
|
uint8_t reserved2[2];
|
|
uint8_t flags;
|
|
uint8_t status;
|
|
uint32_t data_out_res_cnt;
|
|
uint32_t data_in_res_cnt;
|
|
uint32_t sense_data_len;
|
|
uint32_t resp_data_len;
|
|
uint8_t data[0];
|
|
} QEMU_PACKED;
|
|
|
|
#endif /* SCSI_SRP_H */
|