120 lines
3.0 KiB
C
120 lines
3.0 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Linux network driver for QLogic BR-series Converged Network Adapter.
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*/
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/*
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* Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
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* Copyright (c) 2014-2015 QLogic Corporation
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* All rights reserved
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* www.qlogic.com
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*/
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/* BFA common services */
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#ifndef __BFA_CS_H__
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#define __BFA_CS_H__
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#include "cna.h"
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/* BFA state machine interfaces */
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/* For converting from state machine function to state encoding. */
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#define BFA_SM_TABLE(n, s, e, t) \
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struct s; \
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enum e; \
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typedef void (*t)(struct s *, enum e); \
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\
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struct n ## _sm_table_s { \
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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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\
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static inline int \
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n ## _sm_to_state(struct n ## _sm_table_s *smt, t sm) \
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{ \
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int i = 0; \
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\
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while (smt[i].sm && smt[i].sm != sm) \
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i++; \
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return smt[i].state; \
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}
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BFA_SM_TABLE(iocpf, bfa_iocpf, iocpf_event, bfa_fsm_iocpf_t)
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BFA_SM_TABLE(ioc, bfa_ioc, ioc_event, bfa_fsm_ioc_t)
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BFA_SM_TABLE(cmdq, bfa_msgq_cmdq, cmdq_event, bfa_fsm_msgq_cmdq_t)
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BFA_SM_TABLE(rspq, bfa_msgq_rspq, rspq_event, bfa_fsm_msgq_rspq_t)
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BFA_SM_TABLE(ioceth, bna_ioceth, bna_ioceth_event, bna_fsm_ioceth_t)
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BFA_SM_TABLE(enet, bna_enet, bna_enet_event, bna_fsm_enet_t)
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BFA_SM_TABLE(ethport, bna_ethport, bna_ethport_event, bna_fsm_ethport_t)
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BFA_SM_TABLE(tx, bna_tx, bna_tx_event, bna_fsm_tx_t)
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BFA_SM_TABLE(rxf, bna_rxf, bna_rxf_event, bna_fsm_rxf_t)
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BFA_SM_TABLE(rx, bna_rx, bna_rx_event, bna_fsm_rx_t)
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#undef BFA_SM_TABLE
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#define BFA_SM(_sm) (_sm)
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/* State machine with entry actions. */
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typedef void (*bfa_fsm_t)(void *fsm, int event);
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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
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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 = (_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) ((_fsm)->fsm((_fsm), (_event)))
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#define bfa_fsm_cmp_state(_fsm, _state) ((_fsm)->fsm == (_state))
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/* Generic wait counter. */
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typedef void (*bfa_wc_resume_t) (void *cbarg);
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struct bfa_wc {
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bfa_wc_resume_t wc_resume;
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void *wc_cbarg;
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int wc_count;
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};
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static inline void
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bfa_wc_up(struct bfa_wc *wc)
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{
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wc->wc_count++;
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}
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static inline void
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bfa_wc_down(struct bfa_wc *wc)
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{
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wc->wc_count--;
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if (wc->wc_count == 0)
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wc->wc_resume(wc->wc_cbarg);
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}
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/* Initialize a waiting counter. */
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static inline void
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bfa_wc_init(struct bfa_wc *wc, bfa_wc_resume_t wc_resume, void *wc_cbarg)
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{
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wc->wc_resume = wc_resume;
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wc->wc_cbarg = wc_cbarg;
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wc->wc_count = 0;
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bfa_wc_up(wc);
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}
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/* Wait for counter to reach zero */
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static inline void
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bfa_wc_wait(struct bfa_wc *wc)
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{
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bfa_wc_down(wc);
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}
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#endif /* __BFA_CS_H__ */
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