1 files changed, 69 insertions, 0 deletions

diff --git a/drivers/scsi/bfa/include/cs/bfa_sm.h b/drivers/scsi/bfa/include/cs/bfa_sm.h
new file mode 100644
index 00000000000..9877066680a
--- /dev/null
+++ b/drivers/scsi/bfa/include/cs/bfa_sm.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
+ * All rights reserved
+ * www.brocade.com
+ *
+ * Linux driver for Brocade Fibre Channel Host Bus 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.
+ */
+
+/**
+ *  bfasm.h State machine defines
+ */
+
+#ifndef __BFA_SM_H__
+#define __BFA_SM_H__
+
+typedef void (*bfa_sm_t)(void *sm, int 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_s {
+        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))
+
+int bfa_sm_to_state(struct bfa_sm_table_s *smt, 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_s
+ * 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_cmp_state(_fsm, _state)         \
+        ((_fsm)->fsm == (bfa_fsm_t)(_state))
+
+#endif