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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * Linux network driver for QLogic BR-series Converged Network Adapter.4 */5/*6 * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.7 * Copyright (c) 2014-2015 QLogic Corporation8 * All rights reserved9 * www.qlogic.com10 */11 12/* BFA common services */13 14#ifndef __BFA_CS_H__15#define __BFA_CS_H__16 17#include "cna.h"18 19/* BFA state machine interfaces */20 21/* For converting from state machine function to state encoding. */22#define BFA_SM_TABLE(n, s, e, t) \23struct s; \24enum e; \25typedef void (*t)(struct s *, enum e); \26 \27struct n ## _sm_table_s { \28 t sm; /* state machine function */ \29 int state; /* state machine encoding */ \30 char *name; /* state name for display */ \31}; \32 \33static inline int \34n ## _sm_to_state(struct n ## _sm_table_s *smt, t sm) \35{ \36 int i = 0; \37 \38 while (smt[i].sm && smt[i].sm != sm) \39 i++; \40 return smt[i].state; \41}42 43BFA_SM_TABLE(iocpf, bfa_iocpf, iocpf_event, bfa_fsm_iocpf_t)44BFA_SM_TABLE(ioc, bfa_ioc, ioc_event, bfa_fsm_ioc_t)45BFA_SM_TABLE(cmdq, bfa_msgq_cmdq, cmdq_event, bfa_fsm_msgq_cmdq_t)46BFA_SM_TABLE(rspq, bfa_msgq_rspq, rspq_event, bfa_fsm_msgq_rspq_t)47 48BFA_SM_TABLE(ioceth, bna_ioceth, bna_ioceth_event, bna_fsm_ioceth_t)49BFA_SM_TABLE(enet, bna_enet, bna_enet_event, bna_fsm_enet_t)50BFA_SM_TABLE(ethport, bna_ethport, bna_ethport_event, bna_fsm_ethport_t)51BFA_SM_TABLE(tx, bna_tx, bna_tx_event, bna_fsm_tx_t)52BFA_SM_TABLE(rxf, bna_rxf, bna_rxf_event, bna_fsm_rxf_t)53BFA_SM_TABLE(rx, bna_rx, bna_rx_event, bna_fsm_rx_t)54 55#undef BFA_SM_TABLE56 57#define BFA_SM(_sm) (_sm)58 59/* State machine with entry actions. */60typedef void (*bfa_fsm_t)(void *fsm, int event);61 62/* oc - object class eg. bfa_ioc63 * st - state, eg. reset64 * otype - object type, eg. struct bfa_ioc65 * etype - object type, eg. enum ioc_event66 */67#define bfa_fsm_state_decl(oc, st, otype, etype) \68 static void oc ## _sm_ ## st(otype * fsm, etype event); \69 static void oc ## _sm_ ## st ## _entry(otype * fsm)70 71#define bfa_fsm_set_state(_fsm, _state) do { \72 (_fsm)->fsm = (_state); \73 _state ## _entry(_fsm); \74} while (0)75 76#define bfa_fsm_send_event(_fsm, _event) ((_fsm)->fsm((_fsm), (_event)))77#define bfa_fsm_cmp_state(_fsm, _state) ((_fsm)->fsm == (_state))78/* Generic wait counter. */79 80typedef void (*bfa_wc_resume_t) (void *cbarg);81 82struct bfa_wc {83 bfa_wc_resume_t wc_resume;84 void *wc_cbarg;85 int wc_count;86};87 88static inline void89bfa_wc_up(struct bfa_wc *wc)90{91 wc->wc_count++;92}93 94static inline void95bfa_wc_down(struct bfa_wc *wc)96{97 wc->wc_count--;98 if (wc->wc_count == 0)99 wc->wc_resume(wc->wc_cbarg);100}101 102/* Initialize a waiting counter. */103static inline void104bfa_wc_init(struct bfa_wc *wc, bfa_wc_resume_t wc_resume, void *wc_cbarg)105{106 wc->wc_resume = wc_resume;107 wc->wc_cbarg = wc_cbarg;108 wc->wc_count = 0;109 bfa_wc_up(wc);110}111 112/* Wait for counter to reach zero */113static inline void114bfa_wc_wait(struct bfa_wc *wc)115{116 bfa_wc_down(wc);117}118 119#endif /* __BFA_CS_H__ */120