449 lines
16 KiB
C
449 lines
16 KiB
C
/*-
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* Copyright (c) 2017 Broadcom. All rights reserved.
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* The term "Broadcom" refers to Broadcom Limited and/or its subsidiaries.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* @file
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* OCS SCSI API declarations
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*
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*/
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#if !defined(__OCS_SCSI_H__)
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#define __OCS_SCSI_H__
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#include "ocs_ddump.h"
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#include "ocs_mgmt.h"
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#include "ocs_utils.h"
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/* ocs_scsi_rcv_cmd() ocs_scsi_rcv_tmf() flags */
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#define OCS_SCSI_CMD_DIR_IN (1U << 0)
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#define OCS_SCSI_CMD_DIR_OUT (1U << 1)
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#define OCS_SCSI_CMD_SIMPLE (1U << 2)
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#define OCS_SCSI_CMD_HEAD_OF_QUEUE (1U << 3)
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#define OCS_SCSI_CMD_ORDERED (1U << 4)
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#define OCS_SCSI_CMD_UNTAGGED (1U << 5)
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#define OCS_SCSI_CMD_ACA (1U << 6)
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#define OCS_SCSI_FIRST_BURST_ERR (1U << 7)
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#define OCS_SCSI_FIRST_BURST_ABORTED (1U << 8)
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#define OCS_SCSI_PRIORITY_MASK 0xf0000
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#define OCS_SCSI_PRIORITY_SHIFT 16
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/* ocs_scsi_send_rd_data/recv_wr_data/send_resp flags */
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#define OCS_SCSI_LAST_DATAPHASE (1U << 0)
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#define OCS_SCSI_NO_AUTO_RESPONSE (1U << 1)
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#define OCS_SCSI_LOW_LATENCY (1U << 2)
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#define OCS_SCSI_WQ_STEERING_SHIFT (16)
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#define OCS_SCSI_WQ_STEERING_MASK (0xf << OCS_SCSI_WQ_STEERING_SHIFT)
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#define OCS_SCSI_WQ_STEERING_CLASS (0 << OCS_SCSI_WQ_STEERING_SHIFT)
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#define OCS_SCSI_WQ_STEERING_REQUEST (1 << OCS_SCSI_WQ_STEERING_SHIFT)
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#define OCS_SCSI_WQ_STEERING_CPU (2 << OCS_SCSI_WQ_STEERING_SHIFT)
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#define OCS_SCSI_WQ_CLASS_SHIFT (20)
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#define OCS_SCSI_WQ_CLASS_MASK (0xf << OCS_SCSI_WQ_CLASS_SHIFT)
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#define OCS_SCSI_WQ_CLASS(x) ((x & OCS_SCSI_WQ_CLASS_MASK) << OCS_SCSI_WQ_CLASS_SHIFT)
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#define OCS_SCSI_WQ_CLASS_LOW_LATENCY (1)
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/*!
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* @defgroup scsi_api_base SCSI Base Target/Initiator
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* @defgroup scsi_api_target SCSI Target
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* @defgroup scsi_api_initiator SCSI Initiator
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*/
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/**
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* @brief SCSI command response.
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*
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* This structure is used by target-servers to specify SCSI status and
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* sense data. In this case all but the @b residual element are used. For
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* initiator-clients, this structure is used by the SCSI API to convey the
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* response data for issued commands, including the residual element.
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*/
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typedef struct {
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uint8_t scsi_status; /**< SCSI status */
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uint16_t scsi_status_qualifier; /**< SCSI status qualifier */
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uint8_t *response_data; /**< pointer to response data buffer */
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uint32_t response_data_length; /**< length of response data buffer (bytes) */
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uint8_t *sense_data; /**< pointer to sense data buffer */
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uint32_t sense_data_length; /**< length of sense data buffer (bytes) */
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int32_t residual; /**< command residual (not used for target), positive value
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* indicates an underflow, negative value indicates overflow
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*/
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uint32_t response_wire_length; /**< Command response length received in wcqe */
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} ocs_scsi_cmd_resp_t;
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/* Status values returned by IO callbacks */
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typedef enum {
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OCS_SCSI_STATUS_GOOD = 0,
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OCS_SCSI_STATUS_ABORTED,
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OCS_SCSI_STATUS_ERROR,
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OCS_SCSI_STATUS_DIF_GUARD_ERROR,
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OCS_SCSI_STATUS_DIF_REF_TAG_ERROR,
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OCS_SCSI_STATUS_DIF_APP_TAG_ERROR,
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OCS_SCSI_STATUS_DIF_UNKNOWN_ERROR,
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OCS_SCSI_STATUS_PROTOCOL_CRC_ERROR,
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OCS_SCSI_STATUS_NO_IO,
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OCS_SCSI_STATUS_ABORT_IN_PROGRESS,
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OCS_SCSI_STATUS_CHECK_RESPONSE,
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OCS_SCSI_STATUS_COMMAND_TIMEOUT,
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OCS_SCSI_STATUS_TIMEDOUT_AND_ABORTED,
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OCS_SCSI_STATUS_SHUTDOWN,
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OCS_SCSI_STATUS_NEXUS_LOST,
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} ocs_scsi_io_status_e;
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/* SCSI command status */
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#define SCSI_STATUS_GOOD 0x00
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#define SCSI_STATUS_CHECK_CONDITION 0x02
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#define SCSI_STATUS_CONDITION_MET 0x04
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#define SCSI_STATUS_BUSY 0x08
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#define SCSI_STATUS_RESERVATION_CONFLICT 0x18
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#define SCSI_STATUS_TASK_SET_FULL 0x28
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#define SCSI_STATUS_ACA_ACTIVE 0x30
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#define SCSI_STATUS_TASK_ABORTED 0x40
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/* Callback used by send_rd_data(), recv_wr_data(), send_resp() */
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typedef int32_t (*ocs_scsi_io_cb_t)(ocs_io_t *io, ocs_scsi_io_status_e status, uint32_t flags,
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void *arg);
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/* Callback used by send_rd_io(), send_wr_io() */
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typedef int32_t (*ocs_scsi_rsp_io_cb_t)(ocs_io_t *io, ocs_scsi_io_status_e status, ocs_scsi_cmd_resp_t *rsp,
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uint32_t flags, void *arg);
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/* ocs_scsi_cb_t flags */
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#define OCS_SCSI_IO_CMPL (1U << 0) /* IO completed */
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#define OCS_SCSI_IO_CMPL_RSP_SENT (1U << 1) /* IO completed, response sent */
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#define OCS_SCSI_IO_ABORTED (1U << 2) /* IO was aborted */
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/* ocs_scsi_recv_tmf() request values */
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typedef enum {
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OCS_SCSI_TMF_ABORT_TASK = 1,
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OCS_SCSI_TMF_QUERY_TASK_SET,
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OCS_SCSI_TMF_ABORT_TASK_SET,
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OCS_SCSI_TMF_CLEAR_TASK_SET,
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OCS_SCSI_TMF_QUERY_ASYNCHRONOUS_EVENT,
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OCS_SCSI_TMF_LOGICAL_UNIT_RESET,
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OCS_SCSI_TMF_CLEAR_ACA,
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OCS_SCSI_TMF_TARGET_RESET,
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} ocs_scsi_tmf_cmd_e;
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/* ocs_scsi_send_tmf_resp() response values */
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typedef enum {
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OCS_SCSI_TMF_FUNCTION_COMPLETE = 1,
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OCS_SCSI_TMF_FUNCTION_SUCCEEDED,
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OCS_SCSI_TMF_FUNCTION_IO_NOT_FOUND,
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OCS_SCSI_TMF_FUNCTION_REJECTED,
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OCS_SCSI_TMF_INCORRECT_LOGICAL_UNIT_NUMBER,
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OCS_SCSI_TMF_SERVICE_DELIVERY,
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} ocs_scsi_tmf_resp_e;
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/**
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* @brief property names for ocs_scsi_get_property() functions
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*/
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typedef enum {
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OCS_SCSI_MAX_SGE,
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OCS_SCSI_MAX_SGL,
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OCS_SCSI_WWNN,
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OCS_SCSI_WWPN,
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OCS_SCSI_SERIALNUMBER,
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OCS_SCSI_PARTNUMBER,
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OCS_SCSI_PORTNUM,
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OCS_SCSI_BIOS_VERSION_STRING,
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OCS_SCSI_MAX_IOS,
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OCS_SCSI_DIF_CAPABLE,
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OCS_SCSI_DIF_MULTI_SEPARATE,
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OCS_SCSI_MAX_FIRST_BURST,
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OCS_SCSI_ENABLE_TASK_SET_FULL,
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} ocs_scsi_property_e;
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#define DIF_SIZE 8
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/**
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* @brief T10 DIF operations
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*
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* WARNING: do not reorder or insert to this list without making appropriate changes in ocs_dif.c
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*/
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typedef enum {
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OCS_SCSI_DIF_OPER_DISABLED,
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OCS_SCSI_DIF_OPER_IN_NODIF_OUT_CRC,
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OCS_SCSI_DIF_OPER_IN_CRC_OUT_NODIF,
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OCS_SCSI_DIF_OPER_IN_NODIF_OUT_CHKSUM,
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OCS_SCSI_DIF_OPER_IN_CHKSUM_OUT_NODIF,
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OCS_SCSI_DIF_OPER_IN_CRC_OUT_CRC,
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OCS_SCSI_DIF_OPER_IN_CHKSUM_OUT_CHKSUM,
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OCS_SCSI_DIF_OPER_IN_CRC_OUT_CHKSUM,
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OCS_SCSI_DIF_OPER_IN_CHKSUM_OUT_CRC,
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OCS_SCSI_DIF_OPER_IN_RAW_OUT_RAW,
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} ocs_scsi_dif_oper_e;
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#define OCS_SCSI_DIF_OPER_PASS_THRU OCS_SCSI_DIF_OPER_IN_CRC_OUT_CRC
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#define OCS_SCSI_DIF_OPER_STRIP OCS_SCSI_DIF_OPER_IN_CRC_OUT_NODIF
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#define OCS_SCSI_DIF_OPER_INSERT OCS_SCSI_DIF_OPER_IN_NODIF_OUT_CRC
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/**
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* @brief T10 DIF block sizes
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*/
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typedef enum {
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OCS_SCSI_DIF_BK_SIZE_512,
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OCS_SCSI_DIF_BK_SIZE_1024,
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OCS_SCSI_DIF_BK_SIZE_2048,
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OCS_SCSI_DIF_BK_SIZE_4096,
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OCS_SCSI_DIF_BK_SIZE_520,
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OCS_SCSI_DIF_BK_SIZE_4104
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} ocs_scsi_dif_blk_size_e;
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/**
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* @brief generic scatter-gather list structure
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*/
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typedef struct ocs_scsi_sgl_s {
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uintptr_t addr; /**< physical address */
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uintptr_t dif_addr; /**< address of DIF segment, zero if DIF is interleaved */
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size_t len; /**< length */
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} ocs_scsi_sgl_t;
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/**
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* @brief T10 DIF information passed to the transport
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*/
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typedef struct ocs_scsi_dif_info_s {
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ocs_scsi_dif_oper_e dif_oper;
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ocs_scsi_dif_blk_size_e blk_size;
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uint32_t ref_tag;
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uint32_t app_tag:16,
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check_ref_tag:1,
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check_app_tag:1,
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check_guard:1,
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dif_separate:1,
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/* If the APP TAG is 0xFFFF, disable checking the REF TAG and CRC fields */
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disable_app_ffff:1,
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/* if the APP TAG is 0xFFFF and REF TAG is 0xFFFF_FFFF, disable checking the received CRC field. */
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disable_app_ref_ffff:1,
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:10;
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uint64_t lba;
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} ocs_scsi_dif_info_t;
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/* Return values for calls from base driver to target-server/initiator-client */
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#define OCS_SCSI_CALL_COMPLETE 0 /* All work is done */
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#define OCS_SCSI_CALL_ASYNC 1 /* Work will be completed asynchronously */
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/* Calls from target/initiator to base driver */
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typedef enum {
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OCS_SCSI_IO_ROLE_ORIGINATOR,
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OCS_SCSI_IO_ROLE_RESPONDER,
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} ocs_scsi_io_role_e;
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extern void ocs_scsi_io_alloc_enable(ocs_node_t *node);
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extern void ocs_scsi_io_alloc_disable(ocs_node_t *node);
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extern ocs_io_t *ocs_scsi_io_alloc(ocs_node_t *node, ocs_scsi_io_role_e role);
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extern void ocs_scsi_io_free(ocs_io_t *io);
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extern ocs_io_t *ocs_io_get_instance(ocs_t *ocs, uint32_t index);
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extern void ocs_scsi_register_bounce(ocs_t *ocs, void(*fctn)(void(*fctn)(void *arg), void *arg,
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uint32_t s_id, uint32_t d_id, uint32_t ox_id));
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/* Calls from base driver to target-server */
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extern int32_t ocs_scsi_tgt_driver_init(void);
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extern int32_t ocs_scsi_tgt_driver_exit(void);
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extern int32_t ocs_scsi_tgt_io_init(ocs_io_t *io);
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extern int32_t ocs_scsi_tgt_io_exit(ocs_io_t *io);
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extern int32_t ocs_scsi_tgt_new_device(ocs_t *ocs);
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extern int32_t ocs_scsi_tgt_del_device(ocs_t *ocs);
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extern int32_t ocs_scsi_tgt_new_domain(ocs_domain_t *domain);
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extern void ocs_scsi_tgt_del_domain(ocs_domain_t *domain);
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extern int32_t ocs_scsi_tgt_new_sport(ocs_sport_t *sport);
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extern void ocs_scsi_tgt_del_sport(ocs_sport_t *sport);
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extern void ocs_scsi_sport_deleted(ocs_sport_t *sport);
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extern int32_t ocs_scsi_validate_initiator(ocs_node_t *node);
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extern int32_t ocs_scsi_new_initiator(ocs_node_t *node);
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typedef enum {
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OCS_SCSI_INITIATOR_DELETED,
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OCS_SCSI_INITIATOR_MISSING,
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} ocs_scsi_del_initiator_reason_e;
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extern int32_t ocs_scsi_del_initiator(ocs_node_t *node, ocs_scsi_del_initiator_reason_e reason);
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extern int32_t ocs_scsi_recv_cmd(ocs_io_t *io, uint64_t lun, uint8_t *cdb, uint32_t cdb_len, uint32_t flags);
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extern int32_t ocs_scsi_recv_cmd_first_burst(ocs_io_t *io, uint64_t lun, uint8_t *cdb, uint32_t cdb_len, uint32_t flags,
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ocs_dma_t first_burst_buffers[], uint32_t first_burst_bytes);
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extern int32_t ocs_scsi_recv_tmf(ocs_io_t *tmfio, uint64_t lun, ocs_scsi_tmf_cmd_e cmd, ocs_io_t *abortio,
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uint32_t flags);
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extern ocs_sport_t *ocs_sport_get_instance(ocs_domain_t *domain, uint32_t index);
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extern ocs_domain_t *ocs_domain_get_instance(ocs_t *ocs, uint32_t index);
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/* Calls from target-server to base driver */
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extern int32_t ocs_scsi_send_rd_data(ocs_io_t *io, uint32_t flags,
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ocs_scsi_dif_info_t *dif_info,
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ocs_scsi_sgl_t *sgl, uint32_t sgl_count,
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uint32_t wire_len, ocs_scsi_io_cb_t cb, void *arg);
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extern int32_t ocs_scsi_recv_wr_data(ocs_io_t *io, uint32_t flags,
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ocs_scsi_dif_info_t *dif_info,
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ocs_scsi_sgl_t *sgl, uint32_t sgl_count,
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uint32_t wire_len, ocs_scsi_io_cb_t cb, void *arg);
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extern int32_t ocs_scsi_send_resp(ocs_io_t *io, uint32_t flags, ocs_scsi_cmd_resp_t *rsp,
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ocs_scsi_io_cb_t cb, void *arg);
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extern int32_t ocs_scsi_send_tmf_resp(ocs_io_t *io, ocs_scsi_tmf_resp_e rspcode, uint8_t addl_rsp_info[3],
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ocs_scsi_io_cb_t cb, void *arg);
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extern int32_t ocs_scsi_tgt_abort_io(ocs_io_t *io, ocs_scsi_io_cb_t cb, void *arg);
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extern void ocs_scsi_io_complete(ocs_io_t *io);
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extern uint32_t ocs_scsi_get_property(ocs_t *ocs, ocs_scsi_property_e prop);
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extern void *ocs_scsi_get_property_ptr(ocs_t *ocs, ocs_scsi_property_e prop);
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extern void ocs_scsi_del_initiator_complete(ocs_node_t *node);
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extern void ocs_scsi_update_first_burst_transferred(ocs_io_t *io, uint32_t transferred);
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/* Calls from base driver to initiator-client */
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extern int32_t ocs_scsi_ini_driver_init(void);
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extern int32_t ocs_scsi_ini_driver_exit(void);
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extern int32_t ocs_scsi_ini_io_init(ocs_io_t *io);
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extern int32_t ocs_scsi_ini_io_exit(ocs_io_t *io);
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extern int32_t ocs_scsi_ini_new_device(ocs_t *ocs);
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extern int32_t ocs_scsi_ini_del_device(ocs_t *ocs);
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extern int32_t ocs_scsi_ini_new_domain(ocs_domain_t *domain);
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extern void ocs_scsi_ini_del_domain(ocs_domain_t *domain);
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extern int32_t ocs_scsi_ini_new_sport(ocs_sport_t *sport);
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extern void ocs_scsi_ini_del_sport(ocs_sport_t *sport);
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extern int32_t ocs_scsi_new_target(ocs_node_t *node);
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typedef enum {
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OCS_SCSI_TARGET_DELETED,
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OCS_SCSI_TARGET_MISSING,
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} ocs_scsi_del_target_reason_e;
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extern int32_t ocs_scsi_del_target(ocs_node_t *node, ocs_scsi_del_target_reason_e reason);
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/* Calls from the initiator-client to the base driver */
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extern int32_t ocs_scsi_send_rd_io(ocs_node_t *node, ocs_io_t *io, uint64_t lun, void *cdb, uint32_t cdb_len,
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ocs_scsi_dif_info_t *dif_info,
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ocs_scsi_sgl_t *sgl, uint32_t sgl_count, uint32_t wire_len, ocs_scsi_rsp_io_cb_t cb, void *arg, uint32_t flags);
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extern int32_t ocs_scsi_send_wr_io(ocs_node_t *node, ocs_io_t *io, uint64_t lun, void *cdb, uint32_t cdb_len,
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ocs_scsi_dif_info_t *dif_info,
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ocs_scsi_sgl_t *sgl, uint32_t sgl_count, uint32_t wire_len, ocs_scsi_rsp_io_cb_t cb, void *arg, uint32_t flags);
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extern int32_t ocs_scsi_send_wr_io_first_burst(ocs_node_t *node, ocs_io_t *io, uint64_t lun, void *cdb, uint32_t cdb_len,
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ocs_scsi_dif_info_t *dif_info,
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ocs_scsi_sgl_t *sgl, uint32_t sgl_count, uint32_t wire_len, uint32_t first_burst,
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ocs_scsi_rsp_io_cb_t cb, void *arg, uint32_t flags);
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extern int32_t ocs_scsi_send_tmf(ocs_node_t *node, ocs_io_t *io, ocs_io_t *io_to_abort, uint64_t lun,
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ocs_scsi_tmf_cmd_e tmf, ocs_scsi_sgl_t *sgl, uint32_t sgl_count, uint32_t len, ocs_scsi_rsp_io_cb_t cb, void *arg);
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extern int32_t ocs_scsi_send_nodata_io(ocs_node_t *node, ocs_io_t *io, uint64_t lun, void *cdb, uint32_t cdb_len,
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ocs_scsi_rsp_io_cb_t cb, void *arg, uint32_t flags);
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extern void ocs_scsi_del_target_complete(ocs_node_t *node);
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typedef enum {
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OCS_SCSI_DDUMP_DEVICE,
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OCS_SCSI_DDUMP_DOMAIN,
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OCS_SCSI_DDUMP_SPORT,
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OCS_SCSI_DDUMP_NODE,
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OCS_SCSI_DDUMP_IO,
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} ocs_scsi_ddump_type_e;
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/* base driver to target/initiator */
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struct ocs_scsi_vaddr_len_s {
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void *vaddr;
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uint32_t length;
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} ;
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extern int32_t ocs_scsi_get_block_vaddr(ocs_io_t *io, uint64_t blocknumber, ocs_scsi_vaddr_len_t addrlen[],
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uint32_t max_addrlen, void **dif_vaddr);
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extern void ocs_scsi_ini_ddump(ocs_textbuf_t *textbuf, ocs_scsi_ddump_type_e type, void *obj);
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extern void ocs_scsi_tgt_ddump(ocs_textbuf_t *textbuf, ocs_scsi_ddump_type_e type, void *obj);
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/* Calls within base driver */
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extern int32_t ocs_scsi_io_dispatch(ocs_io_t *io, void *cb);
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extern int32_t ocs_scsi_io_dispatch_abort(ocs_io_t *io, void *cb);
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extern void ocs_scsi_check_pending(ocs_t *ocs);
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extern uint32_t ocs_scsi_dif_blocksize(ocs_scsi_dif_info_t *dif_info);
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extern int32_t ocs_scsi_dif_set_blocksize(ocs_scsi_dif_info_t *dif_info, uint32_t blocksize);
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extern int32_t ocs_scsi_dif_mem_blocksize(ocs_scsi_dif_info_t *dif_info, int wiretomem);
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extern int32_t ocs_scsi_dif_wire_blocksize(ocs_scsi_dif_info_t *dif_info, int wiretomem);
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uint32_t ocs_get_crn(ocs_node_t *node, uint8_t *crn, uint64_t lun);
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void ocs_del_crn(ocs_node_t *node);
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void ocs_reset_crn(ocs_node_t *node, uint64_t lun);
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|
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/**
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* @brief Notification from base driver that domain is in force-free path.
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*
|
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* @par Description Domain is forcefully going away. Cleanup any resources associated with it.
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*
|
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* @param domain Pointer to domain being free'd.
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|
*
|
|
* @return None.
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|
*/
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|
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static inline void
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ocs_scsi_notify_domain_force_free(ocs_domain_t *domain)
|
|
{
|
|
/* Nothing to do */
|
|
return;
|
|
}
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|
|
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/**
|
|
* @brief Notification from base driver that sport is in force-free path.
|
|
*
|
|
* @par Description Sport is forcefully going away. Cleanup any resources associated with it.
|
|
*
|
|
* @param sport Pointer to sport being free'd.
|
|
*
|
|
* @return None.
|
|
*/
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|
|
|
static inline void
|
|
ocs_scsi_notify_sport_force_free(ocs_sport_t *sport)
|
|
{
|
|
/* Nothing to do */
|
|
return;
|
|
}
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|
|
|
/**
|
|
* @brief Notification from base driver that node is in force-free path.
|
|
*
|
|
* @par Description Node is forcefully going away. Cleanup any resources associated with it.
|
|
*
|
|
* @param node Pointer to node being free'd.
|
|
*
|
|
* @return None.
|
|
*/
|
|
|
|
static inline void
|
|
ocs_scsi_notify_node_force_free(ocs_node_t *node)
|
|
{
|
|
/* Nothing to do */
|
|
return;
|
|
}
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|
#endif /* __OCS_SCSI_H__ */
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