78 lines
2.3 KiB
C
78 lines
2.3 KiB
C
/*
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* Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
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* All rights reserved
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* www.brocade.com
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*
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* Linux driver for Brocade Fibre Channel Host Bus Adapter.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License (GPL) Version 2 as
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* published by the Free Software Foundation
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*/
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/**
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* bfasm.h State machine defines
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*/
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#ifndef __BFA_SM_H__
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#define __BFA_SM_H__
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typedef void (*bfa_sm_t)(void *sm, int event);
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/**
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* oc - object class eg. bfa_ioc
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* st - state, eg. reset
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* otype - object type, eg. struct bfa_ioc_s
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* etype - object type, eg. enum ioc_event
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*/
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#define bfa_sm_state_decl(oc, st, otype, etype) \
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static void oc ## _sm_ ## st(otype * fsm, etype event)
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#define bfa_sm_set_state(_sm, _state) ((_sm)->sm = (bfa_sm_t)(_state))
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#define bfa_sm_send_event(_sm, _event) ((_sm)->sm((_sm), (_event)))
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#define bfa_sm_get_state(_sm) ((_sm)->sm)
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#define bfa_sm_cmp_state(_sm, _state) ((_sm)->sm == (bfa_sm_t)(_state))
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/**
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* For converting from state machine function to state encoding.
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*/
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struct bfa_sm_table_s {
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bfa_sm_t sm; /* state machine function */
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int state; /* state machine encoding */
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char *name; /* state name for display */
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};
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#define BFA_SM(_sm) ((bfa_sm_t)(_sm))
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int bfa_sm_to_state(struct bfa_sm_table_s *smt, bfa_sm_t sm);
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/**
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* State machine with entry actions.
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*/
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typedef void (*bfa_fsm_t)(void *fsm, int event);
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/**
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* oc - object class eg. bfa_ioc
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* st - state, eg. reset
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* otype - object type, eg. struct bfa_ioc_s
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* etype - object type, eg. enum ioc_event
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*/
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#define bfa_fsm_state_decl(oc, st, otype, etype) \
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static void oc ## _sm_ ## st(otype * fsm, etype event); \
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static void oc ## _sm_ ## st ## _entry(otype * fsm)
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#define bfa_fsm_set_state(_fsm, _state) do { \
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(_fsm)->fsm = (bfa_fsm_t)(_state); \
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_state ## _entry(_fsm); \
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} while (0)
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#define bfa_fsm_send_event(_fsm, _event) \
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((_fsm)->fsm((_fsm), (_event)))
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#define bfa_fsm_cmp_state(_fsm, _state) \
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((_fsm)->fsm == (bfa_fsm_t)(_state))
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#endif
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