ctcm: infrastructure for replaced ctc driver
ctcm driver supports the channel-to-channel connections of the
old ctc driver plus an additional MPC protocol to provide SNA
connectivity.
This new ctcm driver replaces the existing ctc driver.
Signed-off-by: Peter Tiedemann <ptiedem@de.ibm.com>
Signed-off-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/s390/net/ctcm_fsms.h b/drivers/s390/net/ctcm_fsms.h
new file mode 100644
index 0000000..2326aba
--- /dev/null
+++ b/drivers/s390/net/ctcm_fsms.h
@@ -0,0 +1,359 @@
+/*
+ * drivers/s390/net/ctcm_fsms.h
+ *
+ * Copyright IBM Corp. 2001, 2007
+ * Authors: Fritz Elfert (felfert@millenux.com)
+ * Peter Tiedemann (ptiedem@de.ibm.com)
+ * MPC additions :
+ * Belinda Thompson (belindat@us.ibm.com)
+ * Andy Richter (richtera@us.ibm.com)
+ */
+#ifndef _CTCM_FSMS_H_
+#define _CTCM_FSMS_H_
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/timer.h>
+#include <linux/bitops.h>
+
+#include <linux/signal.h>
+#include <linux/string.h>
+
+#include <linux/ip.h>
+#include <linux/if_arp.h>
+#include <linux/tcp.h>
+#include <linux/skbuff.h>
+#include <linux/ctype.h>
+#include <net/dst.h>
+
+#include <linux/io.h>
+#include <asm/ccwdev.h>
+#include <asm/ccwgroup.h>
+#include <linux/uaccess.h>
+
+#include <asm/idals.h>
+
+#include "fsm.h"
+#include "cu3088.h"
+#include "ctcm_main.h"
+
+/*
+ * Definitions for the channel statemachine(s) for ctc and ctcmpc
+ *
+ * To allow better kerntyping, prefix-less definitions for channel states
+ * and channel events have been replaced :
+ * ch_event... -> ctc_ch_event...
+ * CH_EVENT... -> CTC_EVENT...
+ * ch_state... -> ctc_ch_state...
+ * CH_STATE... -> CTC_STATE...
+ */
+/*
+ * Events of the channel statemachine(s) for ctc and ctcmpc
+ */
+enum ctc_ch_events {
+ /*
+ * Events, representing return code of
+ * I/O operations (ccw_device_start, ccw_device_halt et al.)
+ */
+ CTC_EVENT_IO_SUCCESS,
+ CTC_EVENT_IO_EBUSY,
+ CTC_EVENT_IO_ENODEV,
+ CTC_EVENT_IO_UNKNOWN,
+
+ CTC_EVENT_ATTNBUSY,
+ CTC_EVENT_ATTN,
+ CTC_EVENT_BUSY,
+ /*
+ * Events, representing unit-check
+ */
+ CTC_EVENT_UC_RCRESET,
+ CTC_EVENT_UC_RSRESET,
+ CTC_EVENT_UC_TXTIMEOUT,
+ CTC_EVENT_UC_TXPARITY,
+ CTC_EVENT_UC_HWFAIL,
+ CTC_EVENT_UC_RXPARITY,
+ CTC_EVENT_UC_ZERO,
+ CTC_EVENT_UC_UNKNOWN,
+ /*
+ * Events, representing subchannel-check
+ */
+ CTC_EVENT_SC_UNKNOWN,
+ /*
+ * Events, representing machine checks
+ */
+ CTC_EVENT_MC_FAIL,
+ CTC_EVENT_MC_GOOD,
+ /*
+ * Event, representing normal IRQ
+ */
+ CTC_EVENT_IRQ,
+ CTC_EVENT_FINSTAT,
+ /*
+ * Event, representing timer expiry.
+ */
+ CTC_EVENT_TIMER,
+ /*
+ * Events, representing commands from upper levels.
+ */
+ CTC_EVENT_START,
+ CTC_EVENT_STOP,
+ CTC_NR_EVENTS,
+ /*
+ * additional MPC events
+ */
+ CTC_EVENT_SEND_XID = CTC_NR_EVENTS,
+ CTC_EVENT_RSWEEP_TIMER,
+ /*
+ * MUST be always the last element!!
+ */
+ CTC_MPC_NR_EVENTS,
+};
+
+/*
+ * States of the channel statemachine(s) for ctc and ctcmpc.
+ */
+enum ctc_ch_states {
+ /*
+ * Channel not assigned to any device,
+ * initial state, direction invalid
+ */
+ CTC_STATE_IDLE,
+ /*
+ * Channel assigned but not operating
+ */
+ CTC_STATE_STOPPED,
+ CTC_STATE_STARTWAIT,
+ CTC_STATE_STARTRETRY,
+ CTC_STATE_SETUPWAIT,
+ CTC_STATE_RXINIT,
+ CTC_STATE_TXINIT,
+ CTC_STATE_RX,
+ CTC_STATE_TX,
+ CTC_STATE_RXIDLE,
+ CTC_STATE_TXIDLE,
+ CTC_STATE_RXERR,
+ CTC_STATE_TXERR,
+ CTC_STATE_TERM,
+ CTC_STATE_DTERM,
+ CTC_STATE_NOTOP,
+ CTC_NR_STATES, /* MUST be the last element of non-expanded states */
+ /*
+ * additional MPC states
+ */
+ CH_XID0_PENDING = CTC_NR_STATES,
+ CH_XID0_INPROGRESS,
+ CH_XID7_PENDING,
+ CH_XID7_PENDING1,
+ CH_XID7_PENDING2,
+ CH_XID7_PENDING3,
+ CH_XID7_PENDING4,
+ CTC_MPC_NR_STATES, /* MUST be the last element of expanded mpc states */
+};
+
+extern const char *ctc_ch_event_names[];
+
+extern const char *ctc_ch_state_names[];
+
+void ctcm_ccw_check_rc(struct channel *ch, int rc, char *msg);
+void ctcm_purge_skb_queue(struct sk_buff_head *q);
+void fsm_action_nop(fsm_instance *fi, int event, void *arg);
+
+/*
+ * ----- non-static actions for ctcm channel statemachine -----
+ *
+ */
+void ctcm_chx_txidle(fsm_instance *fi, int event, void *arg);
+
+/*
+ * ----- FSM (state/event/action) of the ctcm channel statemachine -----
+ */
+extern const fsm_node ch_fsm[];
+extern int ch_fsm_len;
+
+
+/*
+ * ----- non-static actions for ctcmpc channel statemachine ----
+ *
+ */
+/* shared :
+void ctcm_chx_txidle(fsm_instance * fi, int event, void *arg);
+ */
+void ctcmpc_chx_rxidle(fsm_instance *fi, int event, void *arg);
+
+/*
+ * ----- FSM (state/event/action) of the ctcmpc channel statemachine -----
+ */
+extern const fsm_node ctcmpc_ch_fsm[];
+extern int mpc_ch_fsm_len;
+
+/*
+ * Definitions for the device interface statemachine for ctc and mpc
+ */
+
+/*
+ * States of the device interface statemachine.
+ */
+enum dev_states {
+ DEV_STATE_STOPPED,
+ DEV_STATE_STARTWAIT_RXTX,
+ DEV_STATE_STARTWAIT_RX,
+ DEV_STATE_STARTWAIT_TX,
+ DEV_STATE_STOPWAIT_RXTX,
+ DEV_STATE_STOPWAIT_RX,
+ DEV_STATE_STOPWAIT_TX,
+ DEV_STATE_RUNNING,
+ /*
+ * MUST be always the last element!!
+ */
+ CTCM_NR_DEV_STATES
+};
+
+extern const char *dev_state_names[];
+
+/*
+ * Events of the device interface statemachine.
+ * ctcm and ctcmpc
+ */
+enum dev_events {
+ DEV_EVENT_START,
+ DEV_EVENT_STOP,
+ DEV_EVENT_RXUP,
+ DEV_EVENT_TXUP,
+ DEV_EVENT_RXDOWN,
+ DEV_EVENT_TXDOWN,
+ DEV_EVENT_RESTART,
+ /*
+ * MUST be always the last element!!
+ */
+ CTCM_NR_DEV_EVENTS
+};
+
+extern const char *dev_event_names[];
+
+/*
+ * Actions for the device interface statemachine.
+ * ctc and ctcmpc
+ */
+/*
+static void dev_action_start(fsm_instance * fi, int event, void *arg);
+static void dev_action_stop(fsm_instance * fi, int event, void *arg);
+static void dev_action_restart(fsm_instance *fi, int event, void *arg);
+static void dev_action_chup(fsm_instance * fi, int event, void *arg);
+static void dev_action_chdown(fsm_instance * fi, int event, void *arg);
+*/
+
+/*
+ * The (state/event/action) fsm table of the device interface statemachine.
+ * ctcm and ctcmpc
+ */
+extern const fsm_node dev_fsm[];
+extern int dev_fsm_len;
+
+
+/*
+ * Definitions for the MPC Group statemachine
+ */
+
+/*
+ * MPC Group Station FSM States
+
+State Name When In This State
+====================== =======================================
+MPCG_STATE_RESET Initial State When Driver Loaded
+ We receive and send NOTHING
+
+MPCG_STATE_INOP INOP Received.
+ Group level non-recoverable error
+
+MPCG_STATE_READY XID exchanges for at least 1 write and
+ 1 read channel have completed.
+ Group is ready for data transfer.
+
+States from ctc_mpc_alloc_channel
+==============================================================
+MPCG_STATE_XID2INITW Awaiting XID2(0) Initiation
+ ATTN from other side will start
+ XID negotiations.
+ Y-side protocol only.
+
+MPCG_STATE_XID2INITX XID2(0) negotiations are in progress.
+ At least 1, but not all, XID2(0)'s
+ have been received from partner.
+
+MPCG_STATE_XID7INITW XID2(0) complete
+ No XID2(7)'s have yet been received.
+ XID2(7) negotiations pending.
+
+MPCG_STATE_XID7INITX XID2(7) negotiations in progress.
+ At least 1, but not all, XID2(7)'s
+ have been received from partner.
+
+MPCG_STATE_XID7INITF XID2(7) negotiations complete.
+ Transitioning to READY.
+
+MPCG_STATE_READY Ready for Data Transfer.
+
+
+States from ctc_mpc_establish_connectivity call
+==============================================================
+MPCG_STATE_XID0IOWAIT Initiating XID2(0) negotiations.
+ X-side protocol only.
+ ATTN-BUSY from other side will convert
+ this to Y-side protocol and the
+ ctc_mpc_alloc_channel flow will begin.
+
+MPCG_STATE_XID0IOWAIX XID2(0) negotiations are in progress.
+ At least 1, but not all, XID2(0)'s
+ have been received from partner.
+
+MPCG_STATE_XID7INITI XID2(0) complete
+ No XID2(7)'s have yet been received.
+ XID2(7) negotiations pending.
+
+MPCG_STATE_XID7INITZ XID2(7) negotiations in progress.
+ At least 1, but not all, XID2(7)'s
+ have been received from partner.
+
+MPCG_STATE_XID7INITF XID2(7) negotiations complete.
+ Transitioning to READY.
+
+MPCG_STATE_READY Ready for Data Transfer.
+
+*/
+
+enum mpcg_events {
+ MPCG_EVENT_INOP,
+ MPCG_EVENT_DISCONC,
+ MPCG_EVENT_XID0DO,
+ MPCG_EVENT_XID2,
+ MPCG_EVENT_XID2DONE,
+ MPCG_EVENT_XID7DONE,
+ MPCG_EVENT_TIMER,
+ MPCG_EVENT_DOIO,
+ MPCG_NR_EVENTS,
+};
+
+enum mpcg_states {
+ MPCG_STATE_RESET,
+ MPCG_STATE_INOP,
+ MPCG_STATE_XID2INITW,
+ MPCG_STATE_XID2INITX,
+ MPCG_STATE_XID7INITW,
+ MPCG_STATE_XID7INITX,
+ MPCG_STATE_XID0IOWAIT,
+ MPCG_STATE_XID0IOWAIX,
+ MPCG_STATE_XID7INITI,
+ MPCG_STATE_XID7INITZ,
+ MPCG_STATE_XID7INITF,
+ MPCG_STATE_FLOWC,
+ MPCG_STATE_READY,
+ MPCG_NR_STATES,
+};
+
+#endif
+/* --- This is the END my friend --- */