projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 8b230ed8 RM |
1 | /* |
| 2 | * Linux network driver for Brocade Converged Network Adapter. | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or modify it | |
| 5 | * under the terms of the GNU General Public License (GPL) Version 2 as | |
| 6 | * published by the Free Software Foundation | |
| 7 | * | |
| 8 | * This program is distributed in the hope that it will be useful, but | |
| 9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 11 | * General Public License for more details. | |
| 12 | */ | |
| 13 | /* | |
| 14 | * Copyright (c) 2005-2010 Brocade Communications Systems, Inc. | |
| 15 | * All rights reserved | |
| 16 | * www.brocade.com | |
| 17 | */ | |
| 18 | ||
| 19 | /** | |
| 20 | * @file bfasm.h State machine defines | |
| 21 | */ | |
| 22 | ||
| 23 | #ifndef __BFA_SM_H__ | |
| 24 | #define __BFA_SM_H__ | |
| 25 | ||
| 26 | #include "cna.h" | |
| 27 | ||
| 28 | typedef void (*bfa_sm_t)(void *sm, int event); | |
| 29 | ||
| 30 | /** | |
| 31 | * oc - object class eg. bfa_ioc | |
| 32 | * st - state, eg. reset | |
| 33 | * otype - object type, eg. struct bfa_ioc | |
| 34 | * etype - object type, eg. enum ioc_event | |
| 35 | */ | |
| 36 | #define bfa_sm_state_decl(oc, st, otype, etype) \ | |
| 37 | static void oc ## _sm_ ## st(otype * fsm, etype event) | |
| 38 | ||
| 39 | #define bfa_sm_set_state(_sm, _state) ((_sm)->sm = (bfa_sm_t)(_state)) | |
| 40 | #define bfa_sm_send_event(_sm, _event) ((_sm)->sm((_sm), (_event))) | |
| 41 | #define bfa_sm_get_state(_sm) ((_sm)->sm) | |
| 42 | #define bfa_sm_cmp_state(_sm, _state) ((_sm)->sm == (bfa_sm_t)(_state)) | |
| 43 | ||
| 44 | /** | |
| 45 | * For converting from state machine function to state encoding. | |
| 46 | */ | |
| 47 | struct bfa_sm_table { | |
| 48 | bfa_sm_t sm; /*!< state machine function */ | |
| 49 | int state; /*!< state machine encoding */ | |
| 50 | char *name; /*!< state name for display */ | |
| 51 | }; | |
| 52 | #define BFA_SM(_sm) ((bfa_sm_t)(_sm)) | |
| 53 | ||
| 54 | /** | |
| 55 | * State machine with entry actions. | |
| 56 | */ | |
| 57 | typedef void (*bfa_fsm_t)(void *fsm, int event); | |
| 58 | ||
| 59 | /** | |
| 60 | * oc - object class eg. bfa_ioc | |
| 61 | * st - state, eg. reset | |
| 62 | * otype - object type, eg. struct bfa_ioc | |
| 63 | * etype - object type, eg. enum ioc_event | |
| 64 | */ | |
| 65 | #define bfa_fsm_state_decl(oc, st, otype, etype) \ | |
| 66 | static void oc ## _sm_ ## st(otype * fsm, etype event); \ | |
| 67 | static void oc ## _sm_ ## st ## _entry(otype * fsm) | |
| 68 | ||
| 69 | #define bfa_fsm_set_state(_fsm, _state) do { \ | |
| 70 | (_fsm)->fsm = (bfa_fsm_t)(_state); \ | |
| 71 | _state ## _entry(_fsm); \ | |
| 72 | } while (0) | |
| 73 | ||
| 74 | #define bfa_fsm_send_event(_fsm, _event) ((_fsm)->fsm((_fsm), (_event))) | |
| 75 | #define bfa_fsm_get_state(_fsm) ((_fsm)->fsm) | |
| 76 | #define bfa_fsm_cmp_state(_fsm, _state) \ | |
| 77 | ((_fsm)->fsm == (bfa_fsm_t)(_state)) | |
| 78 | ||
| 79 | static inline int | |
| 80 | bfa_sm_to_state(struct bfa_sm_table *smt, bfa_sm_t sm) | |
| 81 | { | |
| 82 | int i = 0; | |
| 83 | ||
| 84 | while (smt[i].sm && smt[i].sm != sm) | |
| 85 | i++; | |
| 86 | return smt[i].state; | |
| 87 | } | |
| 88 | #endif |