218 lines
6.6 KiB
C
218 lines
6.6 KiB
C
/*****************************************************************************/
|
|
/* srp.h -- SCSI RDMA Protocol definitions */
|
|
/* */
|
|
/* Written By: Colin Devilbis, IBM Corporation */
|
|
/* */
|
|
/* Copyright (C) 2003 IBM Corporation */
|
|
/* */
|
|
/* This program is free software; you can redistribute it and/or modify */
|
|
/* it under the terms of the GNU General Public License as published by */
|
|
/* the Free Software Foundation; either version 2 of the License, or */
|
|
/* (at your option) any later version. */
|
|
/* */
|
|
/* This program is distributed in the hope that it will be useful, */
|
|
/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
|
|
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
|
|
/* GNU General Public License for more details. */
|
|
/* */
|
|
/* You should have received a copy of the GNU General Public License */
|
|
/* along with this program; if not, write to the Free Software */
|
|
/* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
|
|
/* */
|
|
/* */
|
|
/* This file contains structures and definitions for IBM RPA (RS/6000 */
|
|
/* platform architecture) implementation of the SRP (SCSI RDMA Protocol) */
|
|
/* standard. SRP is used on IBM iSeries and pSeries platforms to send SCSI */
|
|
/* commands between logical partitions. */
|
|
/* */
|
|
/* SRP Information Units (IUs) are sent on a "Command/Response Queue" (CRQ) */
|
|
/* between partitions. The definitions in this file are architected, */
|
|
/* and cannot be changed without breaking compatibility with other versions */
|
|
/* of Linux and other operating systems (AIX, OS/400) that talk this protocol*/
|
|
/* between logical partitions */
|
|
/*****************************************************************************/
|
|
#ifndef PPC_VIOSRP_H
|
|
#define PPC_VIOSRP_H
|
|
|
|
#include "hw/scsi/srp.h"
|
|
|
|
#define SRP_VERSION "16.a"
|
|
#define SRP_MAX_IU_LEN 256
|
|
#define SRP_MAX_LOC_LEN 32
|
|
|
|
union srp_iu {
|
|
struct srp_login_req login_req;
|
|
struct srp_login_rsp login_rsp;
|
|
struct srp_login_rej login_rej;
|
|
struct srp_i_logout i_logout;
|
|
struct srp_t_logout t_logout;
|
|
struct srp_tsk_mgmt tsk_mgmt;
|
|
struct srp_cmd cmd;
|
|
struct srp_rsp rsp;
|
|
};
|
|
|
|
enum viosrp_crq_formats {
|
|
VIOSRP_SRP_FORMAT = 0x01,
|
|
VIOSRP_MAD_FORMAT = 0x02,
|
|
VIOSRP_OS400_FORMAT = 0x03,
|
|
VIOSRP_AIX_FORMAT = 0x04,
|
|
VIOSRP_LINUX_FORMAT = 0x06,
|
|
VIOSRP_INLINE_FORMAT = 0x07
|
|
};
|
|
|
|
enum viosrp_crq_status {
|
|
VIOSRP_OK = 0x0,
|
|
VIOSRP_NONRECOVERABLE_ERR = 0x1,
|
|
VIOSRP_VIOLATES_MAX_XFER = 0x2,
|
|
VIOSRP_PARTNER_PANIC = 0x3,
|
|
VIOSRP_DEVICE_BUSY = 0x8,
|
|
VIOSRP_ADAPTER_FAIL = 0x10,
|
|
VIOSRP_OK2 = 0x99,
|
|
};
|
|
|
|
struct viosrp_crq {
|
|
uint8_t valid; /* used by RPA */
|
|
uint8_t format; /* SCSI vs out-of-band */
|
|
uint8_t reserved;
|
|
uint8_t status; /* non-scsi failure? (e.g. DMA failure) */
|
|
uint16_t timeout; /* in seconds */
|
|
uint16_t IU_length; /* in bytes */
|
|
uint64_t IU_data_ptr; /* the TCE for transferring data */
|
|
};
|
|
|
|
/* MADs are Management requests above and beyond the IUs defined in the SRP
|
|
* standard.
|
|
*/
|
|
enum viosrp_mad_types {
|
|
VIOSRP_EMPTY_IU_TYPE = 0x01,
|
|
VIOSRP_ERROR_LOG_TYPE = 0x02,
|
|
VIOSRP_ADAPTER_INFO_TYPE = 0x03,
|
|
VIOSRP_HOST_CONFIG_TYPE = 0x04,
|
|
VIOSRP_CAPABILITIES_TYPE = 0x05,
|
|
VIOSRP_ENABLE_FAST_FAIL = 0x08,
|
|
};
|
|
|
|
enum viosrp_mad_status {
|
|
VIOSRP_MAD_SUCCESS = 0x00,
|
|
VIOSRP_MAD_NOT_SUPPORTED = 0xF1,
|
|
VIOSRP_MAD_FAILED = 0xF7,
|
|
};
|
|
|
|
enum viosrp_capability_type {
|
|
MIGRATION_CAPABILITIES = 0x01,
|
|
RESERVATION_CAPABILITIES = 0x02,
|
|
};
|
|
|
|
enum viosrp_capability_support {
|
|
SERVER_DOES_NOT_SUPPORTS_CAP = 0x0,
|
|
SERVER_SUPPORTS_CAP = 0x01,
|
|
SERVER_CAP_DATA = 0x02,
|
|
};
|
|
|
|
enum viosrp_reserve_type {
|
|
CLIENT_RESERVE_SCSI_2 = 0x01,
|
|
};
|
|
|
|
enum viosrp_capability_flag {
|
|
CLIENT_MIGRATED = 0x01,
|
|
CLIENT_RECONNECT = 0x02,
|
|
CAP_LIST_SUPPORTED = 0x04,
|
|
CAP_LIST_DATA = 0x08,
|
|
};
|
|
|
|
/*
|
|
* Common MAD header
|
|
*/
|
|
struct mad_common {
|
|
uint32_t type;
|
|
uint16_t status;
|
|
uint16_t length;
|
|
uint64_t tag;
|
|
};
|
|
|
|
/*
|
|
* All SRP (and MAD) requests normally flow from the
|
|
* client to the server. There is no way for the server to send
|
|
* an asynchronous message back to the client. The Empty IU is used
|
|
* to hang out a meaningless request to the server so that it can respond
|
|
* asynchrouously with something like a SCSI AER
|
|
*/
|
|
struct viosrp_empty_iu {
|
|
struct mad_common common;
|
|
uint64_t buffer;
|
|
uint32_t port;
|
|
};
|
|
|
|
struct viosrp_error_log {
|
|
struct mad_common common;
|
|
uint64_t buffer;
|
|
};
|
|
|
|
struct viosrp_adapter_info {
|
|
struct mad_common common;
|
|
uint64_t buffer;
|
|
};
|
|
|
|
struct viosrp_host_config {
|
|
struct mad_common common;
|
|
uint64_t buffer;
|
|
};
|
|
|
|
struct viosrp_fast_fail {
|
|
struct mad_common common;
|
|
};
|
|
|
|
struct viosrp_capabilities {
|
|
struct mad_common common;
|
|
uint64_t buffer;
|
|
};
|
|
|
|
struct mad_capability_common {
|
|
uint32_t cap_type;
|
|
uint16_t length;
|
|
uint16_t server_support;
|
|
};
|
|
|
|
struct mad_reserve_cap {
|
|
struct mad_capability_common common;
|
|
uint32_t type;
|
|
};
|
|
|
|
struct mad_migration_cap {
|
|
struct mad_capability_common common;
|
|
uint32_t ecl;
|
|
};
|
|
|
|
struct capabilities {
|
|
uint32_t flags;
|
|
char name[SRP_MAX_LOC_LEN];
|
|
char loc[SRP_MAX_LOC_LEN];
|
|
struct mad_migration_cap migration;
|
|
struct mad_reserve_cap reserve;
|
|
};
|
|
|
|
union mad_iu {
|
|
struct viosrp_empty_iu empty_iu;
|
|
struct viosrp_error_log error_log;
|
|
struct viosrp_adapter_info adapter_info;
|
|
struct viosrp_host_config host_config;
|
|
struct viosrp_fast_fail fast_fail;
|
|
struct viosrp_capabilities capabilities;
|
|
};
|
|
|
|
union viosrp_iu {
|
|
union srp_iu srp;
|
|
union mad_iu mad;
|
|
};
|
|
|
|
struct mad_adapter_info_data {
|
|
char srp_version[8];
|
|
char partition_name[96];
|
|
uint32_t partition_number;
|
|
uint32_t mad_version;
|
|
uint32_t os_type;
|
|
uint32_t port_max_txu[8]; /* per-port maximum transfer */
|
|
};
|
|
|
|
#endif
|