Merge branch 'master' into tk71

[mv-sheeva.git] / drivers / net / bna / bfa_sm.h

diff --git a/drivers/net/bna/bfa_sm.h b/drivers/net/bna/bfa_sm.h
new file mode 100644 (file)
index 0000000..46462c4
--- /dev/null
+++ b/drivers/net/bna/bfa_sm.h
@@ -0,0 +1,88 @@
+/*
+ * 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) 2005-2010 Brocade Communications Systems, Inc.
+ * All rights reserved
+ * www.brocade.com
+ */
+
+/**
+ * @file bfasm.h State machine defines
+ */
+
+#ifndef __BFA_SM_H__
+#define __BFA_SM_H__
+
+#include "cna.h"
+
+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;
+}
+#endif