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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 | /* * Linux network driver for Brocade Converged Network Adapter. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License (GPL) Version 2 as * published by the Free Software Foundation * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. */ /* * Copyright (c) 2005-2011 Brocade Communications Systems, Inc. * All rights reserved * www.brocade.com */ /** * @file bfa_cs.h BFA common services */ #ifndef __BFA_CS_H__ #define __BFA_CS_H__ #include "cna.h" /** * @ BFA state machine interfaces */ typedef void (*bfa_sm_t)(void *sm, int event); /** * oc - object class eg. bfa_ioc * st - state, eg. reset * otype - object type, eg. struct bfa_ioc * etype - object type, eg. enum ioc_event */ #define bfa_sm_state_decl(oc, st, otype, etype) \ static void oc ## _sm_ ## st(otype * fsm, etype event) #define bfa_sm_set_state(_sm, _state) ((_sm)->sm = (bfa_sm_t)(_state)) #define bfa_sm_send_event(_sm, _event) ((_sm)->sm((_sm), (_event))) #define bfa_sm_get_state(_sm) ((_sm)->sm) #define bfa_sm_cmp_state(_sm, _state) ((_sm)->sm == (bfa_sm_t)(_state)) /** * For converting from state machine function to state encoding. */ struct bfa_sm_table { bfa_sm_t sm; /*!< state machine function */ int state; /*!< state machine encoding */ char *name; /*!< state name for display */ }; #define BFA_SM(_sm) ((bfa_sm_t)(_sm)) /** * State machine with entry actions. */ typedef void (*bfa_fsm_t)(void *fsm, int event); /** * oc - object class eg. bfa_ioc * st - state, eg. reset * otype - object type, eg. struct bfa_ioc * etype - object type, eg. enum ioc_event */ #define bfa_fsm_state_decl(oc, st, otype, etype) \ static void oc ## _sm_ ## st(otype * fsm, etype event); \ static void oc ## _sm_ ## st ## _entry(otype * fsm) #define bfa_fsm_set_state(_fsm, _state) do { \ (_fsm)->fsm = (bfa_fsm_t)(_state); \ _state ## _entry(_fsm); \ } while (0) #define bfa_fsm_send_event(_fsm, _event) ((_fsm)->fsm((_fsm), (_event))) #define bfa_fsm_get_state(_fsm) ((_fsm)->fsm) #define bfa_fsm_cmp_state(_fsm, _state) \ ((_fsm)->fsm == (bfa_fsm_t)(_state)) static inline int bfa_sm_to_state(const struct bfa_sm_table *smt, bfa_sm_t sm) { int i = 0; while (smt[i].sm && smt[i].sm != sm) i++; return smt[i].state; } /** * @ Generic wait counter. */ typedef void (*bfa_wc_resume_t) (void *cbarg); struct bfa_wc { bfa_wc_resume_t wc_resume; void *wc_cbarg; int wc_count; }; static inline void bfa_wc_up(struct bfa_wc *wc) { wc->wc_count++; } static inline void bfa_wc_down(struct bfa_wc *wc) { wc->wc_count--; if (wc->wc_count == 0) wc->wc_resume(wc->wc_cbarg); } /** * Initialize a waiting counter. */ static inline void bfa_wc_init(struct bfa_wc *wc, bfa_wc_resume_t wc_resume, void *wc_cbarg) { wc->wc_resume = wc_resume; wc->wc_cbarg = wc_cbarg; wc->wc_count = 0; bfa_wc_up(wc); } /** * Wait for counter to reach zero */ static inline void bfa_wc_wait(struct bfa_wc *wc) { bfa_wc_down(wc); } #endif /* __BFA_CS_H__ */ |