FreeBSD/Linux Kernel Cross Reference
sys/dev/ocs_fc/ocs_sm.h

     /*-
      * Copyright (c) 2017 Broadcom. All rights reserved.
      * The term "Broadcom" refers to Broadcom Limited and/or its subsidiaries.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions are met:
      *
      * 1. Redistributions of source code must retain the above copyright notice,
      *    this list of conditions and the following disclaimer.
     *
     * 2. 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.
     *
     * 3. Neither the name of the copyright holder nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
     * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
     * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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     * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     * POSSIBILITY OF SUCH DAMAGE.
     *
     * $FreeBSD$
     */
    
    /**
     * @file
     * Generic state machine framework declarations.
     */
    
    #ifndef _OCS_SM_H
    #define _OCS_SM_H
    
    /**
     * State Machine (SM) IDs.
     */
    enum {
            OCS_SM_COMMON = 0,
            OCS_SM_DOMAIN,
            OCS_SM_PORT,
            OCS_SM_LOGIN,
            OCS_SM_LAST
    };
    
    #define OCS_SM_EVENT_SHIFT              24
    #define OCS_SM_EVENT_START(id)          ((id) << OCS_SM_EVENT_SHIFT)
    
    extern const char *ocs_sm_id[];         /**< String format of the above enums. */
    
    /**
     * State Machine events.
     */
    typedef enum {
            /* Common Events */
            OCS_EVT_ENTER = OCS_SM_EVENT_START(OCS_SM_COMMON),
            OCS_EVT_REENTER,
            OCS_EVT_EXIT,
            OCS_EVT_SHUTDOWN,
            OCS_EVT_ALL_CHILD_NODES_FREE,
            OCS_EVT_RESUME,
            OCS_EVT_TIMER_EXPIRED,
    
            /* Domain Events */
            OCS_EVT_RESPONSE = OCS_SM_EVENT_START(OCS_SM_DOMAIN),
            OCS_EVT_ERROR,
    
            OCS_EVT_DOMAIN_FOUND,
            OCS_EVT_DOMAIN_ALLOC_OK,
            OCS_EVT_DOMAIN_ALLOC_FAIL,
            OCS_EVT_DOMAIN_REQ_ATTACH,
            OCS_EVT_DOMAIN_ATTACH_OK,
            OCS_EVT_DOMAIN_ATTACH_FAIL,
            OCS_EVT_DOMAIN_LOST,
            OCS_EVT_DOMAIN_FREE_OK,
            OCS_EVT_DOMAIN_FREE_FAIL,
            OCS_EVT_HW_DOMAIN_REQ_ATTACH,
            OCS_EVT_HW_DOMAIN_REQ_FREE,
    
            /* Sport Events */
            OCS_EVT_SPORT_ALLOC_OK = OCS_SM_EVENT_START(OCS_SM_PORT),
            OCS_EVT_SPORT_ALLOC_FAIL,
            OCS_EVT_SPORT_ATTACH_OK,
            OCS_EVT_SPORT_ATTACH_FAIL,
            OCS_EVT_SPORT_FREE_OK,
            OCS_EVT_SPORT_FREE_FAIL,
            OCS_EVT_SPORT_TOPOLOGY_NOTIFY,
            OCS_EVT_HW_PORT_ALLOC_OK,
            OCS_EVT_HW_PORT_ALLOC_FAIL,
            OCS_EVT_HW_PORT_ATTACH_OK,
            OCS_EVT_HW_PORT_REQ_ATTACH,
            OCS_EVT_HW_PORT_REQ_FREE,
           OCS_EVT_HW_PORT_FREE_OK,
   
           /* Login Events */
           OCS_EVT_SRRS_ELS_REQ_OK = OCS_SM_EVENT_START(OCS_SM_LOGIN),
           OCS_EVT_SRRS_ELS_CMPL_OK,
           OCS_EVT_SRRS_ELS_REQ_FAIL,
           OCS_EVT_SRRS_ELS_CMPL_FAIL,
           OCS_EVT_SRRS_ELS_REQ_RJT,
           OCS_EVT_NODE_ATTACH_OK,
           OCS_EVT_NODE_ATTACH_FAIL,
           OCS_EVT_NODE_FREE_OK,
           OCS_EVT_NODE_FREE_FAIL,
           OCS_EVT_ELS_FRAME,
           OCS_EVT_ELS_REQ_TIMEOUT,
           OCS_EVT_ELS_REQ_ABORTED,
           OCS_EVT_ABORT_ELS,              /**< request an ELS IO be aborted */
           OCS_EVT_ELS_ABORT_CMPL,         /**< ELS abort process complete */
   
           OCS_EVT_ABTS_RCVD,
   
           OCS_EVT_NODE_MISSING,           /**< node is not in the GID_PT payload */
           OCS_EVT_NODE_REFOUND,           /**< node is allocated and in the GID_PT payload */
           OCS_EVT_SHUTDOWN_IMPLICIT_LOGO, /**< node shutting down due to PLOGI recvd (implicit logo) */
           OCS_EVT_SHUTDOWN_EXPLICIT_LOGO, /**< node shutting down due to LOGO recvd/sent (explicit logo) */
   
           OCS_EVT_PLOGI_RCVD,
           OCS_EVT_FLOGI_RCVD,
           OCS_EVT_LOGO_RCVD,
           OCS_EVT_RRQ_RCVD,
           OCS_EVT_PRLI_RCVD,
           OCS_EVT_PRLO_RCVD,
           OCS_EVT_PDISC_RCVD,
           OCS_EVT_FDISC_RCVD,
           OCS_EVT_ADISC_RCVD,
           OCS_EVT_RSCN_RCVD,
           OCS_EVT_SCR_RCVD,
           OCS_EVT_ELS_RCVD,
   
           OCS_EVT_FCP_CMD_RCVD,
   
           /* Used by fabric emulation */
           OCS_EVT_RFT_ID_RCVD,
           OCS_EVT_RFF_ID_RCVD,
           OCS_EVT_GNN_ID_RCVD,
           OCS_EVT_GPN_ID_RCVD,
           OCS_EVT_GFPN_ID_RCVD,
           OCS_EVT_GFF_ID_RCVD,
           OCS_EVT_GID_FT_RCVD,
           OCS_EVT_GID_PT_RCVD,
           OCS_EVT_RPN_ID_RCVD,
           OCS_EVT_RNN_ID_RCVD,
           OCS_EVT_RCS_ID_RCVD,
           OCS_EVT_RSNN_NN_RCVD,
           OCS_EVT_RSPN_ID_RCVD,
           OCS_EVT_RHBA_RCVD,
           OCS_EVT_RPA_RCVD,
   
           OCS_EVT_GIDPT_DELAY_EXPIRED,
   
           /* SCSI Target Server events */
           OCS_EVT_ABORT_IO,
           OCS_EVT_ABORT_IO_NO_RESP,
           OCS_EVT_IO_CMPL,
           OCS_EVT_IO_CMPL_ERRORS,
           OCS_EVT_RESP_CMPL,
           OCS_EVT_ABORT_CMPL,
           OCS_EVT_NODE_ACTIVE_IO_LIST_EMPTY,
           OCS_EVT_NODE_DEL_INI_COMPLETE,
           OCS_EVT_NODE_DEL_TGT_COMPLETE,
           OCS_EVT_IO_ABORTED_BY_TMF,
           OCS_EVT_IO_ABORT_IGNORED,
           OCS_EVT_IO_FIRST_BURST,
           OCS_EVT_IO_FIRST_BURST_ERR,
           OCS_EVT_IO_FIRST_BURST_ABORTED,
   
           /* Must be last */
           OCS_EVT_LAST
   } ocs_sm_event_t;
   
   /* Declare ocs_sm_ctx_s */
   typedef struct ocs_sm_ctx_s ocs_sm_ctx_t;
   
   /* State machine state function */
   typedef void *(*ocs_sm_function_t)(ocs_sm_ctx_t *, ocs_sm_event_t, void *);
   
   /* State machine context header  */
   struct ocs_sm_ctx_s {
           ocs_sm_function_t current_state;
           const char *description;
           void    *app;                   /** Application-specific handle. */
   };
   
   extern int ocs_sm_post_event(ocs_sm_ctx_t *, ocs_sm_event_t, void *);
   extern void ocs_sm_transition(ocs_sm_ctx_t *, ocs_sm_function_t, void *);
   extern void ocs_sm_disable(ocs_sm_ctx_t *ctx);
   extern const char *ocs_sm_event_name(ocs_sm_event_t evt);
   
   #if 0
   #define smtrace(sm)     ocs_log_debug(NULL, "%s: %-20s -->   %s\n", sm, ocs_sm_event_name(evt), __func__)
   #else
   #define smtrace(...)
   #endif
   
   #endif /* ! _OCS_SM_H */

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