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103 lines
2.2 KiB
103 lines
2.2 KiB
/* 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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typedef void (*bfa_sm_t)(void *sm, int event); |
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/* For converting from state machine function to state encoding. */ |
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struct bfa_sm_table { |
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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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/* 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 = (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) ((_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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static inline int |
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bfa_sm_to_state(const struct bfa_sm_table *smt, bfa_sm_t sm) |
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{ |
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int i = 0; |
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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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/* 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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