diff options
Diffstat (limited to 'drivers/net/ethernet/brocade/bna/bfa_cs.h')
-rw-r--r-- | drivers/net/ethernet/brocade/bna/bfa_cs.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/drivers/net/ethernet/brocade/bna/bfa_cs.h b/drivers/net/ethernet/brocade/bna/bfa_cs.h new file mode 100644 index 0000000000..858c921294 --- /dev/null +++ b/drivers/net/ethernet/brocade/bna/bfa_cs.h @@ -0,0 +1,119 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Linux network driver for QLogic BR-series Converged Network Adapter. + */ +/* + * Copyright (c) 2005-2014 Brocade Communications Systems, Inc. + * Copyright (c) 2014-2015 QLogic Corporation + * All rights reserved + * www.qlogic.com + */ + +/* BFA common services */ + +#ifndef __BFA_CS_H__ +#define __BFA_CS_H__ + +#include "cna.h" + +/* BFA state machine interfaces */ + +/* For converting from state machine function to state encoding. */ +#define BFA_SM_TABLE(n, s, e, t) \ +struct s; \ +enum e; \ +typedef void (*t)(struct s *, enum e); \ + \ +struct n ## _sm_table_s { \ + t sm; /* state machine function */ \ + int state; /* state machine encoding */ \ + char *name; /* state name for display */ \ +}; \ + \ +static inline int \ +n ## _sm_to_state(struct n ## _sm_table_s *smt, t sm) \ +{ \ + int i = 0; \ + \ + while (smt[i].sm && smt[i].sm != sm) \ + i++; \ + return smt[i].state; \ +} + +BFA_SM_TABLE(iocpf, bfa_iocpf, iocpf_event, bfa_fsm_iocpf_t) +BFA_SM_TABLE(ioc, bfa_ioc, ioc_event, bfa_fsm_ioc_t) +BFA_SM_TABLE(cmdq, bfa_msgq_cmdq, cmdq_event, bfa_fsm_msgq_cmdq_t) +BFA_SM_TABLE(rspq, bfa_msgq_rspq, rspq_event, bfa_fsm_msgq_rspq_t) + +BFA_SM_TABLE(ioceth, bna_ioceth, bna_ioceth_event, bna_fsm_ioceth_t) +BFA_SM_TABLE(enet, bna_enet, bna_enet_event, bna_fsm_enet_t) +BFA_SM_TABLE(ethport, bna_ethport, bna_ethport_event, bna_fsm_ethport_t) +BFA_SM_TABLE(tx, bna_tx, bna_tx_event, bna_fsm_tx_t) +BFA_SM_TABLE(rxf, bna_rxf, bna_rxf_event, bna_fsm_rxf_t) +BFA_SM_TABLE(rx, bna_rx, bna_rx_event, bna_fsm_rx_t) + +#undef BFA_SM_TABLE + +#define BFA_SM(_sm) (_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 = (_state); \ + _state ## _entry(_fsm); \ +} while (0) + +#define bfa_fsm_send_event(_fsm, _event) ((_fsm)->fsm((_fsm), (_event))) +#define bfa_fsm_cmp_state(_fsm, _state) ((_fsm)->fsm == (_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__ */ |