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![Tong Zhang](/assets/img/avatar_default.png)
"packet length to short" -> "packet length too short" Signed-off-by: Tong Zhang <ztong0001@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2285 lines
73 KiB
C
2285 lines
73 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright IBM Corp. 2001, 2007
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* Authors: Fritz Elfert (felfert@millenux.com)
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* Peter Tiedemann (ptiedem@de.ibm.com)
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* MPC additions :
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* Belinda Thompson (belindat@us.ibm.com)
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* Andy Richter (richtera@us.ibm.com)
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*/
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#undef DEBUG
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#undef DEBUGDATA
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#undef DEBUGCCW
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#define KMSG_COMPONENT "ctcm"
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#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <linux/timer.h>
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#include <linux/bitops.h>
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#include <linux/signal.h>
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#include <linux/string.h>
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#include <linux/ip.h>
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#include <linux/if_arp.h>
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#include <linux/tcp.h>
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#include <linux/skbuff.h>
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#include <linux/ctype.h>
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#include <net/dst.h>
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#include <linux/io.h>
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#include <asm/ccwdev.h>
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#include <asm/ccwgroup.h>
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#include <linux/uaccess.h>
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#include <asm/idals.h>
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#include "fsm.h"
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#include "ctcm_dbug.h"
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#include "ctcm_main.h"
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#include "ctcm_fsms.h"
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const char *dev_state_names[] = {
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[DEV_STATE_STOPPED] = "Stopped",
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[DEV_STATE_STARTWAIT_RXTX] = "StartWait RXTX",
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[DEV_STATE_STARTWAIT_RX] = "StartWait RX",
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[DEV_STATE_STARTWAIT_TX] = "StartWait TX",
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[DEV_STATE_STOPWAIT_RXTX] = "StopWait RXTX",
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[DEV_STATE_STOPWAIT_RX] = "StopWait RX",
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[DEV_STATE_STOPWAIT_TX] = "StopWait TX",
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[DEV_STATE_RUNNING] = "Running",
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};
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const char *dev_event_names[] = {
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[DEV_EVENT_START] = "Start",
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[DEV_EVENT_STOP] = "Stop",
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[DEV_EVENT_RXUP] = "RX up",
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[DEV_EVENT_TXUP] = "TX up",
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[DEV_EVENT_RXDOWN] = "RX down",
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[DEV_EVENT_TXDOWN] = "TX down",
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[DEV_EVENT_RESTART] = "Restart",
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};
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const char *ctc_ch_event_names[] = {
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[CTC_EVENT_IO_SUCCESS] = "ccw_device success",
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[CTC_EVENT_IO_EBUSY] = "ccw_device busy",
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[CTC_EVENT_IO_ENODEV] = "ccw_device enodev",
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[CTC_EVENT_IO_UNKNOWN] = "ccw_device unknown",
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[CTC_EVENT_ATTNBUSY] = "Status ATTN & BUSY",
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[CTC_EVENT_ATTN] = "Status ATTN",
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[CTC_EVENT_BUSY] = "Status BUSY",
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[CTC_EVENT_UC_RCRESET] = "Unit check remote reset",
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[CTC_EVENT_UC_RSRESET] = "Unit check remote system reset",
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[CTC_EVENT_UC_TXTIMEOUT] = "Unit check TX timeout",
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[CTC_EVENT_UC_TXPARITY] = "Unit check TX parity",
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[CTC_EVENT_UC_HWFAIL] = "Unit check Hardware failure",
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[CTC_EVENT_UC_RXPARITY] = "Unit check RX parity",
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[CTC_EVENT_UC_ZERO] = "Unit check ZERO",
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[CTC_EVENT_UC_UNKNOWN] = "Unit check Unknown",
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[CTC_EVENT_SC_UNKNOWN] = "SubChannel check Unknown",
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[CTC_EVENT_MC_FAIL] = "Machine check failure",
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[CTC_EVENT_MC_GOOD] = "Machine check operational",
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[CTC_EVENT_IRQ] = "IRQ normal",
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[CTC_EVENT_FINSTAT] = "IRQ final",
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[CTC_EVENT_TIMER] = "Timer",
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[CTC_EVENT_START] = "Start",
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[CTC_EVENT_STOP] = "Stop",
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/*
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* additional MPC events
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*/
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[CTC_EVENT_SEND_XID] = "XID Exchange",
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[CTC_EVENT_RSWEEP_TIMER] = "MPC Group Sweep Timer",
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};
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const char *ctc_ch_state_names[] = {
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[CTC_STATE_IDLE] = "Idle",
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[CTC_STATE_STOPPED] = "Stopped",
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[CTC_STATE_STARTWAIT] = "StartWait",
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[CTC_STATE_STARTRETRY] = "StartRetry",
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[CTC_STATE_SETUPWAIT] = "SetupWait",
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[CTC_STATE_RXINIT] = "RX init",
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[CTC_STATE_TXINIT] = "TX init",
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[CTC_STATE_RX] = "RX",
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[CTC_STATE_TX] = "TX",
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[CTC_STATE_RXIDLE] = "RX idle",
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[CTC_STATE_TXIDLE] = "TX idle",
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[CTC_STATE_RXERR] = "RX error",
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[CTC_STATE_TXERR] = "TX error",
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[CTC_STATE_TERM] = "Terminating",
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[CTC_STATE_DTERM] = "Restarting",
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[CTC_STATE_NOTOP] = "Not operational",
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/*
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* additional MPC states
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*/
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[CH_XID0_PENDING] = "Pending XID0 Start",
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[CH_XID0_INPROGRESS] = "In XID0 Negotiations ",
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[CH_XID7_PENDING] = "Pending XID7 P1 Start",
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[CH_XID7_PENDING1] = "Active XID7 P1 Exchange ",
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[CH_XID7_PENDING2] = "Pending XID7 P2 Start ",
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[CH_XID7_PENDING3] = "Active XID7 P2 Exchange ",
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[CH_XID7_PENDING4] = "XID7 Complete - Pending READY ",
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};
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static void ctcm_action_nop(fsm_instance *fi, int event, void *arg);
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/*
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* ----- static ctcm actions for channel statemachine -----
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*
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*/
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static void chx_txdone(fsm_instance *fi, int event, void *arg);
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static void chx_rx(fsm_instance *fi, int event, void *arg);
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static void chx_rxidle(fsm_instance *fi, int event, void *arg);
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static void chx_firstio(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_setmode(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_start(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_haltio(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_stopped(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_stop(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_fail(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_setuperr(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_restart(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_rxiniterr(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_rxinitfail(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_rxdisc(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_txiniterr(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_txretry(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_iofatal(fsm_instance *fi, int event, void *arg);
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/*
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* ----- static ctcmpc actions for ctcmpc channel statemachine -----
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*
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*/
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static void ctcmpc_chx_txdone(fsm_instance *fi, int event, void *arg);
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static void ctcmpc_chx_rx(fsm_instance *fi, int event, void *arg);
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static void ctcmpc_chx_firstio(fsm_instance *fi, int event, void *arg);
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/* shared :
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static void ctcm_chx_setmode(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_start(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_haltio(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_stopped(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_stop(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_fail(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_setuperr(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_restart(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_rxiniterr(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_rxinitfail(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_rxdisc(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_txiniterr(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_txretry(fsm_instance *fi, int event, void *arg);
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static void ctcm_chx_iofatal(fsm_instance *fi, int event, void *arg);
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*/
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static void ctcmpc_chx_attn(fsm_instance *fsm, int event, void *arg);
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static void ctcmpc_chx_attnbusy(fsm_instance *, int, void *);
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static void ctcmpc_chx_resend(fsm_instance *, int, void *);
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static void ctcmpc_chx_send_sweep(fsm_instance *fsm, int event, void *arg);
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/*
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* Check return code of a preceding ccw_device call, halt_IO etc...
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*
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* ch : The channel, the error belongs to.
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* Returns the error code (!= 0) to inspect.
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*/
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void ctcm_ccw_check_rc(struct channel *ch, int rc, char *msg)
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{
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CTCM_DBF_TEXT_(ERROR, CTC_DBF_ERROR,
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"%s(%s): %s: %04x\n",
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CTCM_FUNTAIL, ch->id, msg, rc);
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switch (rc) {
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case -EBUSY:
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pr_info("%s: The communication peer is busy\n",
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ch->id);
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fsm_event(ch->fsm, CTC_EVENT_IO_EBUSY, ch);
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break;
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case -ENODEV:
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pr_err("%s: The specified target device is not valid\n",
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ch->id);
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fsm_event(ch->fsm, CTC_EVENT_IO_ENODEV, ch);
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break;
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default:
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pr_err("An I/O operation resulted in error %04x\n",
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rc);
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fsm_event(ch->fsm, CTC_EVENT_IO_UNKNOWN, ch);
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}
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}
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void ctcm_purge_skb_queue(struct sk_buff_head *q)
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{
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struct sk_buff *skb;
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CTCM_DBF_TEXT(TRACE, CTC_DBF_DEBUG, __func__);
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while ((skb = skb_dequeue(q))) {
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refcount_dec(&skb->users);
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dev_kfree_skb_any(skb);
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}
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}
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/*
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* NOP action for statemachines
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*/
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static void ctcm_action_nop(fsm_instance *fi, int event, void *arg)
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{
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}
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/*
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* Actions for channel - statemachines.
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*/
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/*
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* Normal data has been send. Free the corresponding
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* skb (it's in io_queue), reset dev->tbusy and
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* revert to idle state.
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*
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* fi An instance of a channel statemachine.
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* event The event, just happened.
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* arg Generic pointer, casted from channel * upon call.
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*/
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static void chx_txdone(fsm_instance *fi, int event, void *arg)
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{
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struct channel *ch = arg;
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struct net_device *dev = ch->netdev;
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struct ctcm_priv *priv = dev->ml_priv;
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struct sk_buff *skb;
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int first = 1;
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int i;
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unsigned long duration;
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unsigned long done_stamp = jiffies;
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CTCM_PR_DEBUG("%s(%s): %s\n", __func__, ch->id, dev->name);
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duration = done_stamp - ch->prof.send_stamp;
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if (duration > ch->prof.tx_time)
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ch->prof.tx_time = duration;
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if (ch->irb->scsw.cmd.count != 0)
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CTCM_DBF_TEXT_(TRACE, CTC_DBF_DEBUG,
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"%s(%s): TX not complete, remaining %d bytes",
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CTCM_FUNTAIL, dev->name, ch->irb->scsw.cmd.count);
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fsm_deltimer(&ch->timer);
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while ((skb = skb_dequeue(&ch->io_queue))) {
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priv->stats.tx_packets++;
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priv->stats.tx_bytes += skb->len - LL_HEADER_LENGTH;
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if (first) {
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priv->stats.tx_bytes += 2;
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first = 0;
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}
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refcount_dec(&skb->users);
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dev_kfree_skb_irq(skb);
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}
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spin_lock(&ch->collect_lock);
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clear_normalized_cda(&ch->ccw[4]);
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if (ch->collect_len > 0) {
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int rc;
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if (ctcm_checkalloc_buffer(ch)) {
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spin_unlock(&ch->collect_lock);
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return;
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}
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ch->trans_skb->data = ch->trans_skb_data;
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skb_reset_tail_pointer(ch->trans_skb);
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ch->trans_skb->len = 0;
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if (ch->prof.maxmulti < (ch->collect_len + 2))
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ch->prof.maxmulti = ch->collect_len + 2;
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if (ch->prof.maxcqueue < skb_queue_len(&ch->collect_queue))
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ch->prof.maxcqueue = skb_queue_len(&ch->collect_queue);
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*((__u16 *)skb_put(ch->trans_skb, 2)) = ch->collect_len + 2;
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i = 0;
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while ((skb = skb_dequeue(&ch->collect_queue))) {
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skb_copy_from_linear_data(skb,
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skb_put(ch->trans_skb, skb->len), skb->len);
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priv->stats.tx_packets++;
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priv->stats.tx_bytes += skb->len - LL_HEADER_LENGTH;
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refcount_dec(&skb->users);
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dev_kfree_skb_irq(skb);
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i++;
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}
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ch->collect_len = 0;
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spin_unlock(&ch->collect_lock);
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ch->ccw[1].count = ch->trans_skb->len;
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fsm_addtimer(&ch->timer, CTCM_TIME_5_SEC, CTC_EVENT_TIMER, ch);
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ch->prof.send_stamp = jiffies;
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rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0);
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ch->prof.doios_multi++;
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if (rc != 0) {
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priv->stats.tx_dropped += i;
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priv->stats.tx_errors += i;
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fsm_deltimer(&ch->timer);
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ctcm_ccw_check_rc(ch, rc, "chained TX");
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}
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} else {
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spin_unlock(&ch->collect_lock);
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fsm_newstate(fi, CTC_STATE_TXIDLE);
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}
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ctcm_clear_busy_do(dev);
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}
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/*
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* Initial data is sent.
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* Notify device statemachine that we are up and
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* running.
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*
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* fi An instance of a channel statemachine.
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* event The event, just happened.
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* arg Generic pointer, casted from channel * upon call.
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*/
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void ctcm_chx_txidle(fsm_instance *fi, int event, void *arg)
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{
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struct channel *ch = arg;
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struct net_device *dev = ch->netdev;
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struct ctcm_priv *priv = dev->ml_priv;
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CTCM_PR_DEBUG("%s(%s): %s\n", __func__, ch->id, dev->name);
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fsm_deltimer(&ch->timer);
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fsm_newstate(fi, CTC_STATE_TXIDLE);
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fsm_event(priv->fsm, DEV_EVENT_TXUP, ch->netdev);
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}
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/*
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* Got normal data, check for sanity, queue it up, allocate new buffer
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* trigger bottom half, and initiate next read.
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*
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* fi An instance of a channel statemachine.
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* event The event, just happened.
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* arg Generic pointer, casted from channel * upon call.
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*/
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static void chx_rx(fsm_instance *fi, int event, void *arg)
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{
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struct channel *ch = arg;
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struct net_device *dev = ch->netdev;
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struct ctcm_priv *priv = dev->ml_priv;
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int len = ch->max_bufsize - ch->irb->scsw.cmd.count;
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struct sk_buff *skb = ch->trans_skb;
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__u16 block_len = *((__u16 *)skb->data);
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int check_len;
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int rc;
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fsm_deltimer(&ch->timer);
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if (len < 8) {
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CTCM_DBF_TEXT_(TRACE, CTC_DBF_NOTICE,
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"%s(%s): got packet with length %d < 8\n",
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CTCM_FUNTAIL, dev->name, len);
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priv->stats.rx_dropped++;
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priv->stats.rx_length_errors++;
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goto again;
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}
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if (len > ch->max_bufsize) {
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CTCM_DBF_TEXT_(TRACE, CTC_DBF_NOTICE,
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"%s(%s): got packet with length %d > %d\n",
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CTCM_FUNTAIL, dev->name, len, ch->max_bufsize);
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priv->stats.rx_dropped++;
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priv->stats.rx_length_errors++;
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goto again;
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}
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/*
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* VM TCP seems to have a bug sending 2 trailing bytes of garbage.
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*/
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switch (ch->protocol) {
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case CTCM_PROTO_S390:
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case CTCM_PROTO_OS390:
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check_len = block_len + 2;
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break;
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default:
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check_len = block_len;
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break;
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}
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if ((len < block_len) || (len > check_len)) {
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CTCM_DBF_TEXT_(TRACE, CTC_DBF_NOTICE,
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"%s(%s): got block length %d != rx length %d\n",
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CTCM_FUNTAIL, dev->name, block_len, len);
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if (do_debug)
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ctcmpc_dump_skb(skb, 0);
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*((__u16 *)skb->data) = len;
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priv->stats.rx_dropped++;
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priv->stats.rx_length_errors++;
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goto again;
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}
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if (block_len > 2) {
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*((__u16 *)skb->data) = block_len - 2;
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ctcm_unpack_skb(ch, skb);
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}
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again:
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skb->data = ch->trans_skb_data;
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skb_reset_tail_pointer(skb);
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skb->len = 0;
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if (ctcm_checkalloc_buffer(ch))
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return;
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ch->ccw[1].count = ch->max_bufsize;
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rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0);
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if (rc != 0)
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ctcm_ccw_check_rc(ch, rc, "normal RX");
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}
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/*
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* Initialize connection by sending a __u16 of value 0.
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*
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|
* fi An instance of a channel statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from channel * upon call.
|
|
*/
|
|
static void chx_firstio(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
int rc;
|
|
struct channel *ch = arg;
|
|
int fsmstate = fsm_getstate(fi);
|
|
|
|
CTCM_DBF_TEXT_(TRACE, CTC_DBF_NOTICE,
|
|
"%s(%s) : %02x",
|
|
CTCM_FUNTAIL, ch->id, fsmstate);
|
|
|
|
ch->sense_rc = 0; /* reset unit check report control */
|
|
if (fsmstate == CTC_STATE_TXIDLE)
|
|
CTCM_DBF_TEXT_(TRACE, CTC_DBF_DEBUG,
|
|
"%s(%s): remote side issued READ?, init.\n",
|
|
CTCM_FUNTAIL, ch->id);
|
|
fsm_deltimer(&ch->timer);
|
|
if (ctcm_checkalloc_buffer(ch))
|
|
return;
|
|
if ((fsmstate == CTC_STATE_SETUPWAIT) &&
|
|
(ch->protocol == CTCM_PROTO_OS390)) {
|
|
/* OS/390 resp. z/OS */
|
|
if (CHANNEL_DIRECTION(ch->flags) == CTCM_READ) {
|
|
*((__u16 *)ch->trans_skb->data) = CTCM_INITIAL_BLOCKLEN;
|
|
fsm_addtimer(&ch->timer, CTCM_TIME_5_SEC,
|
|
CTC_EVENT_TIMER, ch);
|
|
chx_rxidle(fi, event, arg);
|
|
} else {
|
|
struct net_device *dev = ch->netdev;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
fsm_newstate(fi, CTC_STATE_TXIDLE);
|
|
fsm_event(priv->fsm, DEV_EVENT_TXUP, dev);
|
|
}
|
|
return;
|
|
}
|
|
/*
|
|
* Don't setup a timer for receiving the initial RX frame
|
|
* if in compatibility mode, since VM TCP delays the initial
|
|
* frame until it has some data to send.
|
|
*/
|
|
if ((CHANNEL_DIRECTION(ch->flags) == CTCM_WRITE) ||
|
|
(ch->protocol != CTCM_PROTO_S390))
|
|
fsm_addtimer(&ch->timer, CTCM_TIME_5_SEC, CTC_EVENT_TIMER, ch);
|
|
|
|
*((__u16 *)ch->trans_skb->data) = CTCM_INITIAL_BLOCKLEN;
|
|
ch->ccw[1].count = 2; /* Transfer only length */
|
|
|
|
fsm_newstate(fi, (CHANNEL_DIRECTION(ch->flags) == CTCM_READ)
|
|
? CTC_STATE_RXINIT : CTC_STATE_TXINIT);
|
|
rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0);
|
|
if (rc != 0) {
|
|
fsm_deltimer(&ch->timer);
|
|
fsm_newstate(fi, CTC_STATE_SETUPWAIT);
|
|
ctcm_ccw_check_rc(ch, rc, "init IO");
|
|
}
|
|
/*
|
|
* If in compatibility mode since we don't setup a timer, we
|
|
* also signal RX channel up immediately. This enables us
|
|
* to send packets early which in turn usually triggers some
|
|
* reply from VM TCP which brings up the RX channel to it's
|
|
* final state.
|
|
*/
|
|
if ((CHANNEL_DIRECTION(ch->flags) == CTCM_READ) &&
|
|
(ch->protocol == CTCM_PROTO_S390)) {
|
|
struct net_device *dev = ch->netdev;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
fsm_event(priv->fsm, DEV_EVENT_RXUP, dev);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Got initial data, check it. If OK,
|
|
* notify device statemachine that we are up and
|
|
* running.
|
|
*
|
|
* fi An instance of a channel statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from channel * upon call.
|
|
*/
|
|
static void chx_rxidle(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
struct channel *ch = arg;
|
|
struct net_device *dev = ch->netdev;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
__u16 buflen;
|
|
int rc;
|
|
|
|
fsm_deltimer(&ch->timer);
|
|
buflen = *((__u16 *)ch->trans_skb->data);
|
|
CTCM_PR_DEBUG("%s: %s: Initial RX count = %d\n",
|
|
__func__, dev->name, buflen);
|
|
|
|
if (buflen >= CTCM_INITIAL_BLOCKLEN) {
|
|
if (ctcm_checkalloc_buffer(ch))
|
|
return;
|
|
ch->ccw[1].count = ch->max_bufsize;
|
|
fsm_newstate(fi, CTC_STATE_RXIDLE);
|
|
rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0);
|
|
if (rc != 0) {
|
|
fsm_newstate(fi, CTC_STATE_RXINIT);
|
|
ctcm_ccw_check_rc(ch, rc, "initial RX");
|
|
} else
|
|
fsm_event(priv->fsm, DEV_EVENT_RXUP, dev);
|
|
} else {
|
|
CTCM_PR_DEBUG("%s: %s: Initial RX count %d not %d\n",
|
|
__func__, dev->name,
|
|
buflen, CTCM_INITIAL_BLOCKLEN);
|
|
chx_firstio(fi, event, arg);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Set channel into extended mode.
|
|
*
|
|
* fi An instance of a channel statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from channel * upon call.
|
|
*/
|
|
static void ctcm_chx_setmode(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
struct channel *ch = arg;
|
|
int rc;
|
|
unsigned long saveflags = 0;
|
|
int timeout = CTCM_TIME_5_SEC;
|
|
|
|
fsm_deltimer(&ch->timer);
|
|
if (IS_MPC(ch)) {
|
|
timeout = 1500;
|
|
CTCM_PR_DEBUG("enter %s: cp=%i ch=0x%p id=%s\n",
|
|
__func__, smp_processor_id(), ch, ch->id);
|
|
}
|
|
fsm_addtimer(&ch->timer, timeout, CTC_EVENT_TIMER, ch);
|
|
fsm_newstate(fi, CTC_STATE_SETUPWAIT);
|
|
CTCM_CCW_DUMP((char *)&ch->ccw[6], sizeof(struct ccw1) * 2);
|
|
|
|
if (event == CTC_EVENT_TIMER) /* only for timer not yet locked */
|
|
spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
|
|
/* Such conditional locking is undeterministic in
|
|
* static view. => ignore sparse warnings here. */
|
|
|
|
rc = ccw_device_start(ch->cdev, &ch->ccw[6], 0, 0xff, 0);
|
|
if (event == CTC_EVENT_TIMER) /* see above comments */
|
|
spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
|
|
if (rc != 0) {
|
|
fsm_deltimer(&ch->timer);
|
|
fsm_newstate(fi, CTC_STATE_STARTWAIT);
|
|
ctcm_ccw_check_rc(ch, rc, "set Mode");
|
|
} else
|
|
ch->retry = 0;
|
|
}
|
|
|
|
/*
|
|
* Setup channel.
|
|
*
|
|
* fi An instance of a channel statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from channel * upon call.
|
|
*/
|
|
static void ctcm_chx_start(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
struct channel *ch = arg;
|
|
unsigned long saveflags;
|
|
int rc;
|
|
|
|
CTCM_DBF_TEXT_(SETUP, CTC_DBF_INFO, "%s(%s): %s",
|
|
CTCM_FUNTAIL, ch->id,
|
|
(CHANNEL_DIRECTION(ch->flags) == CTCM_READ) ? "RX" : "TX");
|
|
|
|
if (ch->trans_skb != NULL) {
|
|
clear_normalized_cda(&ch->ccw[1]);
|
|
dev_kfree_skb(ch->trans_skb);
|
|
ch->trans_skb = NULL;
|
|
}
|
|
if (CHANNEL_DIRECTION(ch->flags) == CTCM_READ) {
|
|
ch->ccw[1].cmd_code = CCW_CMD_READ;
|
|
ch->ccw[1].flags = CCW_FLAG_SLI;
|
|
ch->ccw[1].count = 0;
|
|
} else {
|
|
ch->ccw[1].cmd_code = CCW_CMD_WRITE;
|
|
ch->ccw[1].flags = CCW_FLAG_SLI | CCW_FLAG_CC;
|
|
ch->ccw[1].count = 0;
|
|
}
|
|
if (ctcm_checkalloc_buffer(ch)) {
|
|
CTCM_DBF_TEXT_(TRACE, CTC_DBF_DEBUG,
|
|
"%s(%s): %s trans_skb alloc delayed "
|
|
"until first transfer",
|
|
CTCM_FUNTAIL, ch->id,
|
|
(CHANNEL_DIRECTION(ch->flags) == CTCM_READ) ?
|
|
"RX" : "TX");
|
|
}
|
|
ch->ccw[0].cmd_code = CCW_CMD_PREPARE;
|
|
ch->ccw[0].flags = CCW_FLAG_SLI | CCW_FLAG_CC;
|
|
ch->ccw[0].count = 0;
|
|
ch->ccw[0].cda = 0;
|
|
ch->ccw[2].cmd_code = CCW_CMD_NOOP; /* jointed CE + DE */
|
|
ch->ccw[2].flags = CCW_FLAG_SLI;
|
|
ch->ccw[2].count = 0;
|
|
ch->ccw[2].cda = 0;
|
|
memcpy(&ch->ccw[3], &ch->ccw[0], sizeof(struct ccw1) * 3);
|
|
ch->ccw[4].cda = 0;
|
|
ch->ccw[4].flags &= ~CCW_FLAG_IDA;
|
|
|
|
fsm_newstate(fi, CTC_STATE_STARTWAIT);
|
|
fsm_addtimer(&ch->timer, 1000, CTC_EVENT_TIMER, ch);
|
|
spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
|
|
rc = ccw_device_halt(ch->cdev, 0);
|
|
spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
|
|
if (rc != 0) {
|
|
if (rc != -EBUSY)
|
|
fsm_deltimer(&ch->timer);
|
|
ctcm_ccw_check_rc(ch, rc, "initial HaltIO");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Shutdown a channel.
|
|
*
|
|
* fi An instance of a channel statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from channel * upon call.
|
|
*/
|
|
static void ctcm_chx_haltio(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
struct channel *ch = arg;
|
|
unsigned long saveflags = 0;
|
|
int rc;
|
|
int oldstate;
|
|
|
|
fsm_deltimer(&ch->timer);
|
|
if (IS_MPC(ch))
|
|
fsm_deltimer(&ch->sweep_timer);
|
|
|
|
fsm_addtimer(&ch->timer, CTCM_TIME_5_SEC, CTC_EVENT_TIMER, ch);
|
|
|
|
if (event == CTC_EVENT_STOP) /* only for STOP not yet locked */
|
|
spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
|
|
/* Such conditional locking is undeterministic in
|
|
* static view. => ignore sparse warnings here. */
|
|
oldstate = fsm_getstate(fi);
|
|
fsm_newstate(fi, CTC_STATE_TERM);
|
|
rc = ccw_device_halt(ch->cdev, 0);
|
|
|
|
if (event == CTC_EVENT_STOP)
|
|
spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
|
|
/* see remark above about conditional locking */
|
|
|
|
if (rc != 0 && rc != -EBUSY) {
|
|
fsm_deltimer(&ch->timer);
|
|
if (event != CTC_EVENT_STOP) {
|
|
fsm_newstate(fi, oldstate);
|
|
ctcm_ccw_check_rc(ch, rc, (char *)__func__);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Cleanup helper for chx_fail and chx_stopped
|
|
* cleanup channels queue and notify interface statemachine.
|
|
*
|
|
* fi An instance of a channel statemachine.
|
|
* state The next state (depending on caller).
|
|
* ch The channel to operate on.
|
|
*/
|
|
static void ctcm_chx_cleanup(fsm_instance *fi, int state,
|
|
struct channel *ch)
|
|
{
|
|
struct net_device *dev = ch->netdev;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
|
|
CTCM_DBF_TEXT_(SETUP, CTC_DBF_NOTICE,
|
|
"%s(%s): %s[%d]\n",
|
|
CTCM_FUNTAIL, dev->name, ch->id, state);
|
|
|
|
fsm_deltimer(&ch->timer);
|
|
if (IS_MPC(ch))
|
|
fsm_deltimer(&ch->sweep_timer);
|
|
|
|
fsm_newstate(fi, state);
|
|
if (state == CTC_STATE_STOPPED && ch->trans_skb != NULL) {
|
|
clear_normalized_cda(&ch->ccw[1]);
|
|
dev_kfree_skb_any(ch->trans_skb);
|
|
ch->trans_skb = NULL;
|
|
}
|
|
|
|
ch->th_seg = 0x00;
|
|
ch->th_seq_num = 0x00;
|
|
if (CHANNEL_DIRECTION(ch->flags) == CTCM_READ) {
|
|
skb_queue_purge(&ch->io_queue);
|
|
fsm_event(priv->fsm, DEV_EVENT_RXDOWN, dev);
|
|
} else {
|
|
ctcm_purge_skb_queue(&ch->io_queue);
|
|
if (IS_MPC(ch))
|
|
ctcm_purge_skb_queue(&ch->sweep_queue);
|
|
spin_lock(&ch->collect_lock);
|
|
ctcm_purge_skb_queue(&ch->collect_queue);
|
|
ch->collect_len = 0;
|
|
spin_unlock(&ch->collect_lock);
|
|
fsm_event(priv->fsm, DEV_EVENT_TXDOWN, dev);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* A channel has successfully been halted.
|
|
* Cleanup it's queue and notify interface statemachine.
|
|
*
|
|
* fi An instance of a channel statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from channel * upon call.
|
|
*/
|
|
static void ctcm_chx_stopped(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
ctcm_chx_cleanup(fi, CTC_STATE_STOPPED, arg);
|
|
}
|
|
|
|
/*
|
|
* A stop command from device statemachine arrived and we are in
|
|
* not operational mode. Set state to stopped.
|
|
*
|
|
* fi An instance of a channel statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from channel * upon call.
|
|
*/
|
|
static void ctcm_chx_stop(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
fsm_newstate(fi, CTC_STATE_STOPPED);
|
|
}
|
|
|
|
/*
|
|
* A machine check for no path, not operational status or gone device has
|
|
* happened.
|
|
* Cleanup queue and notify interface statemachine.
|
|
*
|
|
* fi An instance of a channel statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from channel * upon call.
|
|
*/
|
|
static void ctcm_chx_fail(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
ctcm_chx_cleanup(fi, CTC_STATE_NOTOP, arg);
|
|
}
|
|
|
|
/*
|
|
* Handle error during setup of channel.
|
|
*
|
|
* fi An instance of a channel statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from channel * upon call.
|
|
*/
|
|
static void ctcm_chx_setuperr(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
struct channel *ch = arg;
|
|
struct net_device *dev = ch->netdev;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
|
|
/*
|
|
* Special case: Got UC_RCRESET on setmode.
|
|
* This means that remote side isn't setup. In this case
|
|
* simply retry after some 10 secs...
|
|
*/
|
|
if ((fsm_getstate(fi) == CTC_STATE_SETUPWAIT) &&
|
|
((event == CTC_EVENT_UC_RCRESET) ||
|
|
(event == CTC_EVENT_UC_RSRESET))) {
|
|
fsm_newstate(fi, CTC_STATE_STARTRETRY);
|
|
fsm_deltimer(&ch->timer);
|
|
fsm_addtimer(&ch->timer, CTCM_TIME_5_SEC, CTC_EVENT_TIMER, ch);
|
|
if (!IS_MPC(ch) &&
|
|
(CHANNEL_DIRECTION(ch->flags) == CTCM_READ)) {
|
|
int rc = ccw_device_halt(ch->cdev, 0);
|
|
if (rc != 0)
|
|
ctcm_ccw_check_rc(ch, rc,
|
|
"HaltIO in chx_setuperr");
|
|
}
|
|
return;
|
|
}
|
|
|
|
CTCM_DBF_TEXT_(ERROR, CTC_DBF_CRIT,
|
|
"%s(%s) : %s error during %s channel setup state=%s\n",
|
|
CTCM_FUNTAIL, dev->name, ctc_ch_event_names[event],
|
|
(CHANNEL_DIRECTION(ch->flags) == CTCM_READ) ? "RX" : "TX",
|
|
fsm_getstate_str(fi));
|
|
|
|
if (CHANNEL_DIRECTION(ch->flags) == CTCM_READ) {
|
|
fsm_newstate(fi, CTC_STATE_RXERR);
|
|
fsm_event(priv->fsm, DEV_EVENT_RXDOWN, dev);
|
|
} else {
|
|
fsm_newstate(fi, CTC_STATE_TXERR);
|
|
fsm_event(priv->fsm, DEV_EVENT_TXDOWN, dev);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Restart a channel after an error.
|
|
*
|
|
* fi An instance of a channel statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from channel * upon call.
|
|
*/
|
|
static void ctcm_chx_restart(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
struct channel *ch = arg;
|
|
struct net_device *dev = ch->netdev;
|
|
unsigned long saveflags = 0;
|
|
int oldstate;
|
|
int rc;
|
|
|
|
CTCM_DBF_TEXT_(TRACE, CTC_DBF_NOTICE,
|
|
"%s: %s[%d] of %s\n",
|
|
CTCM_FUNTAIL, ch->id, event, dev->name);
|
|
|
|
fsm_deltimer(&ch->timer);
|
|
|
|
fsm_addtimer(&ch->timer, CTCM_TIME_5_SEC, CTC_EVENT_TIMER, ch);
|
|
oldstate = fsm_getstate(fi);
|
|
fsm_newstate(fi, CTC_STATE_STARTWAIT);
|
|
if (event == CTC_EVENT_TIMER) /* only for timer not yet locked */
|
|
spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
|
|
/* Such conditional locking is a known problem for
|
|
* sparse because its undeterministic in static view.
|
|
* Warnings should be ignored here. */
|
|
rc = ccw_device_halt(ch->cdev, 0);
|
|
if (event == CTC_EVENT_TIMER)
|
|
spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
|
|
if (rc != 0) {
|
|
if (rc != -EBUSY) {
|
|
fsm_deltimer(&ch->timer);
|
|
fsm_newstate(fi, oldstate);
|
|
}
|
|
ctcm_ccw_check_rc(ch, rc, "HaltIO in ctcm_chx_restart");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Handle error during RX initial handshake (exchange of
|
|
* 0-length block header)
|
|
*
|
|
* fi An instance of a channel statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from channel * upon call.
|
|
*/
|
|
static void ctcm_chx_rxiniterr(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
struct channel *ch = arg;
|
|
struct net_device *dev = ch->netdev;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
|
|
if (event == CTC_EVENT_TIMER) {
|
|
if (!IS_MPCDEV(dev))
|
|
/* TODO : check if MPC deletes timer somewhere */
|
|
fsm_deltimer(&ch->timer);
|
|
if (ch->retry++ < 3)
|
|
ctcm_chx_restart(fi, event, arg);
|
|
else {
|
|
fsm_newstate(fi, CTC_STATE_RXERR);
|
|
fsm_event(priv->fsm, DEV_EVENT_RXDOWN, dev);
|
|
}
|
|
} else {
|
|
CTCM_DBF_TEXT_(ERROR, CTC_DBF_ERROR,
|
|
"%s(%s): %s in %s", CTCM_FUNTAIL, ch->id,
|
|
ctc_ch_event_names[event], fsm_getstate_str(fi));
|
|
|
|
dev_warn(&dev->dev,
|
|
"Initialization failed with RX/TX init handshake "
|
|
"error %s\n", ctc_ch_event_names[event]);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Notify device statemachine if we gave up initialization
|
|
* of RX channel.
|
|
*
|
|
* fi An instance of a channel statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from channel * upon call.
|
|
*/
|
|
static void ctcm_chx_rxinitfail(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
struct channel *ch = arg;
|
|
struct net_device *dev = ch->netdev;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
|
|
CTCM_DBF_TEXT_(ERROR, CTC_DBF_ERROR,
|
|
"%s(%s): RX %s busy, init. fail",
|
|
CTCM_FUNTAIL, dev->name, ch->id);
|
|
fsm_newstate(fi, CTC_STATE_RXERR);
|
|
fsm_event(priv->fsm, DEV_EVENT_RXDOWN, dev);
|
|
}
|
|
|
|
/*
|
|
* Handle RX Unit check remote reset (remote disconnected)
|
|
*
|
|
* fi An instance of a channel statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from channel * upon call.
|
|
*/
|
|
static void ctcm_chx_rxdisc(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
struct channel *ch = arg;
|
|
struct channel *ch2;
|
|
struct net_device *dev = ch->netdev;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
|
|
CTCM_DBF_TEXT_(TRACE, CTC_DBF_NOTICE,
|
|
"%s: %s: remote disconnect - re-init ...",
|
|
CTCM_FUNTAIL, dev->name);
|
|
fsm_deltimer(&ch->timer);
|
|
/*
|
|
* Notify device statemachine
|
|
*/
|
|
fsm_event(priv->fsm, DEV_EVENT_RXDOWN, dev);
|
|
fsm_event(priv->fsm, DEV_EVENT_TXDOWN, dev);
|
|
|
|
fsm_newstate(fi, CTC_STATE_DTERM);
|
|
ch2 = priv->channel[CTCM_WRITE];
|
|
fsm_newstate(ch2->fsm, CTC_STATE_DTERM);
|
|
|
|
ccw_device_halt(ch->cdev, 0);
|
|
ccw_device_halt(ch2->cdev, 0);
|
|
}
|
|
|
|
/*
|
|
* Handle error during TX channel initialization.
|
|
*
|
|
* fi An instance of a channel statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from channel * upon call.
|
|
*/
|
|
static void ctcm_chx_txiniterr(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
struct channel *ch = arg;
|
|
struct net_device *dev = ch->netdev;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
|
|
if (event == CTC_EVENT_TIMER) {
|
|
fsm_deltimer(&ch->timer);
|
|
if (ch->retry++ < 3)
|
|
ctcm_chx_restart(fi, event, arg);
|
|
else {
|
|
fsm_newstate(fi, CTC_STATE_TXERR);
|
|
fsm_event(priv->fsm, DEV_EVENT_TXDOWN, dev);
|
|
}
|
|
} else {
|
|
CTCM_DBF_TEXT_(ERROR, CTC_DBF_ERROR,
|
|
"%s(%s): %s in %s", CTCM_FUNTAIL, ch->id,
|
|
ctc_ch_event_names[event], fsm_getstate_str(fi));
|
|
|
|
dev_warn(&dev->dev,
|
|
"Initialization failed with RX/TX init handshake "
|
|
"error %s\n", ctc_ch_event_names[event]);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Handle TX timeout by retrying operation.
|
|
*
|
|
* fi An instance of a channel statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from channel * upon call.
|
|
*/
|
|
static void ctcm_chx_txretry(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
struct channel *ch = arg;
|
|
struct net_device *dev = ch->netdev;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
struct sk_buff *skb;
|
|
|
|
CTCM_PR_DEBUG("Enter: %s: cp=%i ch=0x%p id=%s\n",
|
|
__func__, smp_processor_id(), ch, ch->id);
|
|
|
|
fsm_deltimer(&ch->timer);
|
|
if (ch->retry++ > 3) {
|
|
struct mpc_group *gptr = priv->mpcg;
|
|
CTCM_DBF_TEXT_(TRACE, CTC_DBF_INFO,
|
|
"%s: %s: retries exceeded",
|
|
CTCM_FUNTAIL, ch->id);
|
|
fsm_event(priv->fsm, DEV_EVENT_TXDOWN, dev);
|
|
/* call restart if not MPC or if MPC and mpcg fsm is ready.
|
|
use gptr as mpc indicator */
|
|
if (!(gptr && (fsm_getstate(gptr->fsm) != MPCG_STATE_READY)))
|
|
ctcm_chx_restart(fi, event, arg);
|
|
goto done;
|
|
}
|
|
|
|
CTCM_DBF_TEXT_(TRACE, CTC_DBF_DEBUG,
|
|
"%s : %s: retry %d",
|
|
CTCM_FUNTAIL, ch->id, ch->retry);
|
|
skb = skb_peek(&ch->io_queue);
|
|
if (skb) {
|
|
int rc = 0;
|
|
unsigned long saveflags = 0;
|
|
clear_normalized_cda(&ch->ccw[4]);
|
|
ch->ccw[4].count = skb->len;
|
|
if (set_normalized_cda(&ch->ccw[4], skb->data)) {
|
|
CTCM_DBF_TEXT_(TRACE, CTC_DBF_INFO,
|
|
"%s: %s: IDAL alloc failed",
|
|
CTCM_FUNTAIL, ch->id);
|
|
fsm_event(priv->fsm, DEV_EVENT_TXDOWN, dev);
|
|
ctcm_chx_restart(fi, event, arg);
|
|
goto done;
|
|
}
|
|
fsm_addtimer(&ch->timer, 1000, CTC_EVENT_TIMER, ch);
|
|
if (event == CTC_EVENT_TIMER) /* for TIMER not yet locked */
|
|
spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
|
|
/* Such conditional locking is a known problem for
|
|
* sparse because its undeterministic in static view.
|
|
* Warnings should be ignored here. */
|
|
if (do_debug_ccw)
|
|
ctcmpc_dumpit((char *)&ch->ccw[3],
|
|
sizeof(struct ccw1) * 3);
|
|
|
|
rc = ccw_device_start(ch->cdev, &ch->ccw[3], 0, 0xff, 0);
|
|
if (event == CTC_EVENT_TIMER)
|
|
spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev),
|
|
saveflags);
|
|
if (rc != 0) {
|
|
fsm_deltimer(&ch->timer);
|
|
ctcm_ccw_check_rc(ch, rc, "TX in chx_txretry");
|
|
ctcm_purge_skb_queue(&ch->io_queue);
|
|
}
|
|
}
|
|
done:
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Handle fatal errors during an I/O command.
|
|
*
|
|
* fi An instance of a channel statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from channel * upon call.
|
|
*/
|
|
static void ctcm_chx_iofatal(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
struct channel *ch = arg;
|
|
struct net_device *dev = ch->netdev;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
int rd = CHANNEL_DIRECTION(ch->flags);
|
|
|
|
fsm_deltimer(&ch->timer);
|
|
CTCM_DBF_TEXT_(ERROR, CTC_DBF_ERROR,
|
|
"%s: %s: %s unrecoverable channel error",
|
|
CTCM_FUNTAIL, ch->id, rd == CTCM_READ ? "RX" : "TX");
|
|
|
|
if (IS_MPC(ch)) {
|
|
priv->stats.tx_dropped++;
|
|
priv->stats.tx_errors++;
|
|
}
|
|
if (rd == CTCM_READ) {
|
|
fsm_newstate(fi, CTC_STATE_RXERR);
|
|
fsm_event(priv->fsm, DEV_EVENT_RXDOWN, dev);
|
|
} else {
|
|
fsm_newstate(fi, CTC_STATE_TXERR);
|
|
fsm_event(priv->fsm, DEV_EVENT_TXDOWN, dev);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* The ctcm statemachine for a channel.
|
|
*/
|
|
const fsm_node ch_fsm[] = {
|
|
{ CTC_STATE_STOPPED, CTC_EVENT_STOP, ctcm_action_nop },
|
|
{ CTC_STATE_STOPPED, CTC_EVENT_START, ctcm_chx_start },
|
|
{ CTC_STATE_STOPPED, CTC_EVENT_FINSTAT, ctcm_action_nop },
|
|
{ CTC_STATE_STOPPED, CTC_EVENT_MC_FAIL, ctcm_action_nop },
|
|
|
|
{ CTC_STATE_NOTOP, CTC_EVENT_STOP, ctcm_chx_stop },
|
|
{ CTC_STATE_NOTOP, CTC_EVENT_START, ctcm_action_nop },
|
|
{ CTC_STATE_NOTOP, CTC_EVENT_FINSTAT, ctcm_action_nop },
|
|
{ CTC_STATE_NOTOP, CTC_EVENT_MC_FAIL, ctcm_action_nop },
|
|
{ CTC_STATE_NOTOP, CTC_EVENT_MC_GOOD, ctcm_chx_start },
|
|
|
|
{ CTC_STATE_STARTWAIT, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CTC_STATE_STARTWAIT, CTC_EVENT_START, ctcm_action_nop },
|
|
{ CTC_STATE_STARTWAIT, CTC_EVENT_FINSTAT, ctcm_chx_setmode },
|
|
{ CTC_STATE_STARTWAIT, CTC_EVENT_TIMER, ctcm_chx_setuperr },
|
|
{ CTC_STATE_STARTWAIT, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
{ CTC_STATE_STARTWAIT, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
|
|
{ CTC_STATE_STARTRETRY, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CTC_STATE_STARTRETRY, CTC_EVENT_TIMER, ctcm_chx_setmode },
|
|
{ CTC_STATE_STARTRETRY, CTC_EVENT_FINSTAT, ctcm_action_nop },
|
|
{ CTC_STATE_STARTRETRY, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
|
|
{ CTC_STATE_SETUPWAIT, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CTC_STATE_SETUPWAIT, CTC_EVENT_START, ctcm_action_nop },
|
|
{ CTC_STATE_SETUPWAIT, CTC_EVENT_FINSTAT, chx_firstio },
|
|
{ CTC_STATE_SETUPWAIT, CTC_EVENT_UC_RCRESET, ctcm_chx_setuperr },
|
|
{ CTC_STATE_SETUPWAIT, CTC_EVENT_UC_RSRESET, ctcm_chx_setuperr },
|
|
{ CTC_STATE_SETUPWAIT, CTC_EVENT_TIMER, ctcm_chx_setmode },
|
|
{ CTC_STATE_SETUPWAIT, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
{ CTC_STATE_SETUPWAIT, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
|
|
{ CTC_STATE_RXINIT, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CTC_STATE_RXINIT, CTC_EVENT_START, ctcm_action_nop },
|
|
{ CTC_STATE_RXINIT, CTC_EVENT_FINSTAT, chx_rxidle },
|
|
{ CTC_STATE_RXINIT, CTC_EVENT_UC_RCRESET, ctcm_chx_rxiniterr },
|
|
{ CTC_STATE_RXINIT, CTC_EVENT_UC_RSRESET, ctcm_chx_rxiniterr },
|
|
{ CTC_STATE_RXINIT, CTC_EVENT_TIMER, ctcm_chx_rxiniterr },
|
|
{ CTC_STATE_RXINIT, CTC_EVENT_ATTNBUSY, ctcm_chx_rxinitfail },
|
|
{ CTC_STATE_RXINIT, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
{ CTC_STATE_RXINIT, CTC_EVENT_UC_ZERO, chx_firstio },
|
|
{ CTC_STATE_RXINIT, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
|
|
{ CTC_STATE_RXIDLE, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CTC_STATE_RXIDLE, CTC_EVENT_START, ctcm_action_nop },
|
|
{ CTC_STATE_RXIDLE, CTC_EVENT_FINSTAT, chx_rx },
|
|
{ CTC_STATE_RXIDLE, CTC_EVENT_UC_RCRESET, ctcm_chx_rxdisc },
|
|
{ CTC_STATE_RXIDLE, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
{ CTC_STATE_RXIDLE, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
{ CTC_STATE_RXIDLE, CTC_EVENT_UC_ZERO, chx_rx },
|
|
|
|
{ CTC_STATE_TXINIT, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CTC_STATE_TXINIT, CTC_EVENT_START, ctcm_action_nop },
|
|
{ CTC_STATE_TXINIT, CTC_EVENT_FINSTAT, ctcm_chx_txidle },
|
|
{ CTC_STATE_TXINIT, CTC_EVENT_UC_RCRESET, ctcm_chx_txiniterr },
|
|
{ CTC_STATE_TXINIT, CTC_EVENT_UC_RSRESET, ctcm_chx_txiniterr },
|
|
{ CTC_STATE_TXINIT, CTC_EVENT_TIMER, ctcm_chx_txiniterr },
|
|
{ CTC_STATE_TXINIT, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
{ CTC_STATE_TXINIT, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
|
|
{ CTC_STATE_TXIDLE, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CTC_STATE_TXIDLE, CTC_EVENT_START, ctcm_action_nop },
|
|
{ CTC_STATE_TXIDLE, CTC_EVENT_FINSTAT, chx_firstio },
|
|
{ CTC_STATE_TXIDLE, CTC_EVENT_UC_RCRESET, ctcm_action_nop },
|
|
{ CTC_STATE_TXIDLE, CTC_EVENT_UC_RSRESET, ctcm_action_nop },
|
|
{ CTC_STATE_TXIDLE, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
{ CTC_STATE_TXIDLE, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
|
|
{ CTC_STATE_TERM, CTC_EVENT_STOP, ctcm_action_nop },
|
|
{ CTC_STATE_TERM, CTC_EVENT_START, ctcm_chx_restart },
|
|
{ CTC_STATE_TERM, CTC_EVENT_FINSTAT, ctcm_chx_stopped },
|
|
{ CTC_STATE_TERM, CTC_EVENT_UC_RCRESET, ctcm_action_nop },
|
|
{ CTC_STATE_TERM, CTC_EVENT_UC_RSRESET, ctcm_action_nop },
|
|
{ CTC_STATE_TERM, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
|
|
{ CTC_STATE_DTERM, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CTC_STATE_DTERM, CTC_EVENT_START, ctcm_chx_restart },
|
|
{ CTC_STATE_DTERM, CTC_EVENT_FINSTAT, ctcm_chx_setmode },
|
|
{ CTC_STATE_DTERM, CTC_EVENT_UC_RCRESET, ctcm_action_nop },
|
|
{ CTC_STATE_DTERM, CTC_EVENT_UC_RSRESET, ctcm_action_nop },
|
|
{ CTC_STATE_DTERM, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
|
|
{ CTC_STATE_TX, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CTC_STATE_TX, CTC_EVENT_START, ctcm_action_nop },
|
|
{ CTC_STATE_TX, CTC_EVENT_FINSTAT, chx_txdone },
|
|
{ CTC_STATE_TX, CTC_EVENT_UC_RCRESET, ctcm_chx_txretry },
|
|
{ CTC_STATE_TX, CTC_EVENT_UC_RSRESET, ctcm_chx_txretry },
|
|
{ CTC_STATE_TX, CTC_EVENT_TIMER, ctcm_chx_txretry },
|
|
{ CTC_STATE_TX, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
{ CTC_STATE_TX, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
|
|
{ CTC_STATE_RXERR, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CTC_STATE_TXERR, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CTC_STATE_TXERR, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
{ CTC_STATE_RXERR, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
};
|
|
|
|
int ch_fsm_len = ARRAY_SIZE(ch_fsm);
|
|
|
|
/*
|
|
* MPC actions for mpc channel statemachine
|
|
* handling of MPC protocol requires extra
|
|
* statemachine and actions which are prefixed ctcmpc_ .
|
|
* The ctc_ch_states and ctc_ch_state_names,
|
|
* ctc_ch_events and ctc_ch_event_names share the ctcm definitions
|
|
* which are expanded by some elements.
|
|
*/
|
|
|
|
/*
|
|
* Actions for mpc channel statemachine.
|
|
*/
|
|
|
|
/*
|
|
* Normal data has been send. Free the corresponding
|
|
* skb (it's in io_queue), reset dev->tbusy and
|
|
* revert to idle state.
|
|
*
|
|
* fi An instance of a channel statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from channel * upon call.
|
|
*/
|
|
static void ctcmpc_chx_txdone(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
struct channel *ch = arg;
|
|
struct net_device *dev = ch->netdev;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
struct mpc_group *grp = priv->mpcg;
|
|
struct sk_buff *skb;
|
|
int first = 1;
|
|
int i;
|
|
__u32 data_space;
|
|
unsigned long duration;
|
|
struct sk_buff *peekskb;
|
|
int rc;
|
|
struct th_header *header;
|
|
struct pdu *p_header;
|
|
unsigned long done_stamp = jiffies;
|
|
|
|
CTCM_PR_DEBUG("Enter %s: %s cp:%i\n",
|
|
__func__, dev->name, smp_processor_id());
|
|
|
|
duration = done_stamp - ch->prof.send_stamp;
|
|
if (duration > ch->prof.tx_time)
|
|
ch->prof.tx_time = duration;
|
|
|
|
if (ch->irb->scsw.cmd.count != 0)
|
|
CTCM_DBF_TEXT_(MPC_TRACE, CTC_DBF_DEBUG,
|
|
"%s(%s): TX not complete, remaining %d bytes",
|
|
CTCM_FUNTAIL, dev->name, ch->irb->scsw.cmd.count);
|
|
fsm_deltimer(&ch->timer);
|
|
while ((skb = skb_dequeue(&ch->io_queue))) {
|
|
priv->stats.tx_packets++;
|
|
priv->stats.tx_bytes += skb->len - TH_HEADER_LENGTH;
|
|
if (first) {
|
|
priv->stats.tx_bytes += 2;
|
|
first = 0;
|
|
}
|
|
refcount_dec(&skb->users);
|
|
dev_kfree_skb_irq(skb);
|
|
}
|
|
spin_lock(&ch->collect_lock);
|
|
clear_normalized_cda(&ch->ccw[4]);
|
|
if ((ch->collect_len <= 0) || (grp->in_sweep != 0)) {
|
|
spin_unlock(&ch->collect_lock);
|
|
fsm_newstate(fi, CTC_STATE_TXIDLE);
|
|
goto done;
|
|
}
|
|
|
|
if (ctcm_checkalloc_buffer(ch)) {
|
|
spin_unlock(&ch->collect_lock);
|
|
goto done;
|
|
}
|
|
ch->trans_skb->data = ch->trans_skb_data;
|
|
skb_reset_tail_pointer(ch->trans_skb);
|
|
ch->trans_skb->len = 0;
|
|
if (ch->prof.maxmulti < (ch->collect_len + TH_HEADER_LENGTH))
|
|
ch->prof.maxmulti = ch->collect_len + TH_HEADER_LENGTH;
|
|
if (ch->prof.maxcqueue < skb_queue_len(&ch->collect_queue))
|
|
ch->prof.maxcqueue = skb_queue_len(&ch->collect_queue);
|
|
i = 0;
|
|
p_header = NULL;
|
|
data_space = grp->group_max_buflen - TH_HEADER_LENGTH;
|
|
|
|
CTCM_PR_DBGDATA("%s: building trans_skb from collect_q"
|
|
" data_space:%04x\n",
|
|
__func__, data_space);
|
|
|
|
while ((skb = skb_dequeue(&ch->collect_queue))) {
|
|
skb_put_data(ch->trans_skb, skb->data, skb->len);
|
|
p_header = (struct pdu *)
|
|
(skb_tail_pointer(ch->trans_skb) - skb->len);
|
|
p_header->pdu_flag = 0x00;
|
|
if (be16_to_cpu(skb->protocol) == ETH_P_SNAP)
|
|
p_header->pdu_flag |= 0x60;
|
|
else
|
|
p_header->pdu_flag |= 0x20;
|
|
|
|
CTCM_PR_DBGDATA("%s: trans_skb len:%04x \n",
|
|
__func__, ch->trans_skb->len);
|
|
CTCM_PR_DBGDATA("%s: pdu header and data for up"
|
|
" to 32 bytes sent to vtam\n", __func__);
|
|
CTCM_D3_DUMP((char *)p_header, min_t(int, skb->len, 32));
|
|
|
|
ch->collect_len -= skb->len;
|
|
data_space -= skb->len;
|
|
priv->stats.tx_packets++;
|
|
priv->stats.tx_bytes += skb->len;
|
|
refcount_dec(&skb->users);
|
|
dev_kfree_skb_any(skb);
|
|
peekskb = skb_peek(&ch->collect_queue);
|
|
if (peekskb->len > data_space)
|
|
break;
|
|
i++;
|
|
}
|
|
/* p_header points to the last one we handled */
|
|
if (p_header)
|
|
p_header->pdu_flag |= PDU_LAST; /*Say it's the last one*/
|
|
|
|
header = skb_push(ch->trans_skb, TH_HEADER_LENGTH);
|
|
memset(header, 0, TH_HEADER_LENGTH);
|
|
|
|
header->th_ch_flag = TH_HAS_PDU; /* Normal data */
|
|
ch->th_seq_num++;
|
|
header->th_seq_num = ch->th_seq_num;
|
|
|
|
CTCM_PR_DBGDATA("%s: ToVTAM_th_seq= %08x\n" ,
|
|
__func__, ch->th_seq_num);
|
|
|
|
CTCM_PR_DBGDATA("%s: trans_skb len:%04x \n",
|
|
__func__, ch->trans_skb->len);
|
|
CTCM_PR_DBGDATA("%s: up-to-50 bytes of trans_skb "
|
|
"data to vtam from collect_q\n", __func__);
|
|
CTCM_D3_DUMP((char *)ch->trans_skb->data,
|
|
min_t(int, ch->trans_skb->len, 50));
|
|
|
|
spin_unlock(&ch->collect_lock);
|
|
clear_normalized_cda(&ch->ccw[1]);
|
|
|
|
CTCM_PR_DBGDATA("ccwcda=0x%p data=0x%p\n",
|
|
(void *)(unsigned long)ch->ccw[1].cda,
|
|
ch->trans_skb->data);
|
|
ch->ccw[1].count = ch->max_bufsize;
|
|
|
|
if (set_normalized_cda(&ch->ccw[1], ch->trans_skb->data)) {
|
|
dev_kfree_skb_any(ch->trans_skb);
|
|
ch->trans_skb = NULL;
|
|
CTCM_DBF_TEXT_(MPC_TRACE, CTC_DBF_ERROR,
|
|
"%s: %s: IDAL alloc failed",
|
|
CTCM_FUNTAIL, ch->id);
|
|
fsm_event(priv->mpcg->fsm, MPCG_EVENT_INOP, dev);
|
|
return;
|
|
}
|
|
|
|
CTCM_PR_DBGDATA("ccwcda=0x%p data=0x%p\n",
|
|
(void *)(unsigned long)ch->ccw[1].cda,
|
|
ch->trans_skb->data);
|
|
|
|
ch->ccw[1].count = ch->trans_skb->len;
|
|
fsm_addtimer(&ch->timer, CTCM_TIME_5_SEC, CTC_EVENT_TIMER, ch);
|
|
ch->prof.send_stamp = jiffies;
|
|
if (do_debug_ccw)
|
|
ctcmpc_dumpit((char *)&ch->ccw[0], sizeof(struct ccw1) * 3);
|
|
rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0);
|
|
ch->prof.doios_multi++;
|
|
if (rc != 0) {
|
|
priv->stats.tx_dropped += i;
|
|
priv->stats.tx_errors += i;
|
|
fsm_deltimer(&ch->timer);
|
|
ctcm_ccw_check_rc(ch, rc, "chained TX");
|
|
}
|
|
done:
|
|
ctcm_clear_busy(dev);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Got normal data, check for sanity, queue it up, allocate new buffer
|
|
* trigger bottom half, and initiate next read.
|
|
*
|
|
* fi An instance of a channel statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from channel * upon call.
|
|
*/
|
|
static void ctcmpc_chx_rx(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
struct channel *ch = arg;
|
|
struct net_device *dev = ch->netdev;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
struct mpc_group *grp = priv->mpcg;
|
|
struct sk_buff *skb = ch->trans_skb;
|
|
struct sk_buff *new_skb;
|
|
unsigned long saveflags = 0; /* avoids compiler warning */
|
|
int len = ch->max_bufsize - ch->irb->scsw.cmd.count;
|
|
|
|
CTCM_PR_DEBUG("%s: %s: cp:%i %s maxbuf : %04x, len: %04x\n",
|
|
CTCM_FUNTAIL, dev->name, smp_processor_id(),
|
|
ch->id, ch->max_bufsize, len);
|
|
fsm_deltimer(&ch->timer);
|
|
|
|
if (skb == NULL) {
|
|
CTCM_DBF_TEXT_(MPC_ERROR, CTC_DBF_ERROR,
|
|
"%s(%s): TRANS_SKB = NULL",
|
|
CTCM_FUNTAIL, dev->name);
|
|
goto again;
|
|
}
|
|
|
|
if (len < TH_HEADER_LENGTH) {
|
|
CTCM_DBF_TEXT_(MPC_ERROR, CTC_DBF_ERROR,
|
|
"%s(%s): packet length %d too short",
|
|
CTCM_FUNTAIL, dev->name, len);
|
|
priv->stats.rx_dropped++;
|
|
priv->stats.rx_length_errors++;
|
|
} else {
|
|
/* must have valid th header or game over */
|
|
__u32 block_len = len;
|
|
len = TH_HEADER_LENGTH + XID2_LENGTH + 4;
|
|
new_skb = __dev_alloc_skb(ch->max_bufsize, GFP_ATOMIC);
|
|
|
|
if (new_skb == NULL) {
|
|
CTCM_DBF_TEXT_(MPC_ERROR, CTC_DBF_ERROR,
|
|
"%s(%s): skb allocation failed",
|
|
CTCM_FUNTAIL, dev->name);
|
|
fsm_event(priv->mpcg->fsm, MPCG_EVENT_INOP, dev);
|
|
goto again;
|
|
}
|
|
switch (fsm_getstate(grp->fsm)) {
|
|
case MPCG_STATE_RESET:
|
|
case MPCG_STATE_INOP:
|
|
dev_kfree_skb_any(new_skb);
|
|
break;
|
|
case MPCG_STATE_FLOWC:
|
|
case MPCG_STATE_READY:
|
|
skb_put_data(new_skb, skb->data, block_len);
|
|
skb_queue_tail(&ch->io_queue, new_skb);
|
|
tasklet_schedule(&ch->ch_tasklet);
|
|
break;
|
|
default:
|
|
skb_put_data(new_skb, skb->data, len);
|
|
skb_queue_tail(&ch->io_queue, new_skb);
|
|
tasklet_hi_schedule(&ch->ch_tasklet);
|
|
break;
|
|
}
|
|
}
|
|
|
|
again:
|
|
switch (fsm_getstate(grp->fsm)) {
|
|
int rc, dolock;
|
|
case MPCG_STATE_FLOWC:
|
|
case MPCG_STATE_READY:
|
|
if (ctcm_checkalloc_buffer(ch))
|
|
break;
|
|
ch->trans_skb->data = ch->trans_skb_data;
|
|
skb_reset_tail_pointer(ch->trans_skb);
|
|
ch->trans_skb->len = 0;
|
|
ch->ccw[1].count = ch->max_bufsize;
|
|
if (do_debug_ccw)
|
|
ctcmpc_dumpit((char *)&ch->ccw[0],
|
|
sizeof(struct ccw1) * 3);
|
|
dolock = !in_hardirq();
|
|
if (dolock)
|
|
spin_lock_irqsave(
|
|
get_ccwdev_lock(ch->cdev), saveflags);
|
|
rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0);
|
|
if (dolock) /* see remark about conditional locking */
|
|
spin_unlock_irqrestore(
|
|
get_ccwdev_lock(ch->cdev), saveflags);
|
|
if (rc != 0)
|
|
ctcm_ccw_check_rc(ch, rc, "normal RX");
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
CTCM_PR_DEBUG("Exit %s: %s, ch=0x%p, id=%s\n",
|
|
__func__, dev->name, ch, ch->id);
|
|
|
|
}
|
|
|
|
/*
|
|
* Initialize connection by sending a __u16 of value 0.
|
|
*
|
|
* fi An instance of a channel statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from channel * upon call.
|
|
*/
|
|
static void ctcmpc_chx_firstio(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
struct channel *ch = arg;
|
|
struct net_device *dev = ch->netdev;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
struct mpc_group *gptr = priv->mpcg;
|
|
|
|
CTCM_PR_DEBUG("Enter %s: id=%s, ch=0x%p\n",
|
|
__func__, ch->id, ch);
|
|
|
|
CTCM_DBF_TEXT_(MPC_TRACE, CTC_DBF_INFO,
|
|
"%s: %s: chstate:%i, grpstate:%i, prot:%i\n",
|
|
CTCM_FUNTAIL, ch->id, fsm_getstate(fi),
|
|
fsm_getstate(gptr->fsm), ch->protocol);
|
|
|
|
if (fsm_getstate(fi) == CTC_STATE_TXIDLE)
|
|
MPC_DBF_DEV_NAME(TRACE, dev, "remote side issued READ? ");
|
|
|
|
fsm_deltimer(&ch->timer);
|
|
if (ctcm_checkalloc_buffer(ch))
|
|
goto done;
|
|
|
|
switch (fsm_getstate(fi)) {
|
|
case CTC_STATE_STARTRETRY:
|
|
case CTC_STATE_SETUPWAIT:
|
|
if (CHANNEL_DIRECTION(ch->flags) == CTCM_READ) {
|
|
ctcmpc_chx_rxidle(fi, event, arg);
|
|
} else {
|
|
fsm_newstate(fi, CTC_STATE_TXIDLE);
|
|
fsm_event(priv->fsm, DEV_EVENT_TXUP, dev);
|
|
}
|
|
goto done;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
fsm_newstate(fi, (CHANNEL_DIRECTION(ch->flags) == CTCM_READ)
|
|
? CTC_STATE_RXINIT : CTC_STATE_TXINIT);
|
|
|
|
done:
|
|
CTCM_PR_DEBUG("Exit %s: id=%s, ch=0x%p\n",
|
|
__func__, ch->id, ch);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Got initial data, check it. If OK,
|
|
* notify device statemachine that we are up and
|
|
* running.
|
|
*
|
|
* fi An instance of a channel statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from channel * upon call.
|
|
*/
|
|
void ctcmpc_chx_rxidle(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
struct channel *ch = arg;
|
|
struct net_device *dev = ch->netdev;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
struct mpc_group *grp = priv->mpcg;
|
|
int rc;
|
|
unsigned long saveflags = 0; /* avoids compiler warning */
|
|
|
|
fsm_deltimer(&ch->timer);
|
|
CTCM_PR_DEBUG("%s: %s: %s: cp:%i, chstate:%i grpstate:%i\n",
|
|
__func__, ch->id, dev->name, smp_processor_id(),
|
|
fsm_getstate(fi), fsm_getstate(grp->fsm));
|
|
|
|
fsm_newstate(fi, CTC_STATE_RXIDLE);
|
|
/* XID processing complete */
|
|
|
|
switch (fsm_getstate(grp->fsm)) {
|
|
case MPCG_STATE_FLOWC:
|
|
case MPCG_STATE_READY:
|
|
if (ctcm_checkalloc_buffer(ch))
|
|
goto done;
|
|
ch->trans_skb->data = ch->trans_skb_data;
|
|
skb_reset_tail_pointer(ch->trans_skb);
|
|
ch->trans_skb->len = 0;
|
|
ch->ccw[1].count = ch->max_bufsize;
|
|
CTCM_CCW_DUMP((char *)&ch->ccw[0], sizeof(struct ccw1) * 3);
|
|
if (event == CTC_EVENT_START)
|
|
/* see remark about conditional locking */
|
|
spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
|
|
rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0);
|
|
if (event == CTC_EVENT_START)
|
|
spin_unlock_irqrestore(
|
|
get_ccwdev_lock(ch->cdev), saveflags);
|
|
if (rc != 0) {
|
|
fsm_newstate(fi, CTC_STATE_RXINIT);
|
|
ctcm_ccw_check_rc(ch, rc, "initial RX");
|
|
goto done;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
fsm_event(priv->fsm, DEV_EVENT_RXUP, dev);
|
|
done:
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* ctcmpc channel FSM action
|
|
* called from several points in ctcmpc_ch_fsm
|
|
* ctcmpc only
|
|
*/
|
|
static void ctcmpc_chx_attn(fsm_instance *fsm, int event, void *arg)
|
|
{
|
|
struct channel *ch = arg;
|
|
struct net_device *dev = ch->netdev;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
struct mpc_group *grp = priv->mpcg;
|
|
|
|
CTCM_PR_DEBUG("%s(%s): %s(ch=0x%p), cp=%i, ChStat:%s, GrpStat:%s\n",
|
|
__func__, dev->name, ch->id, ch, smp_processor_id(),
|
|
fsm_getstate_str(ch->fsm), fsm_getstate_str(grp->fsm));
|
|
|
|
switch (fsm_getstate(grp->fsm)) {
|
|
case MPCG_STATE_XID2INITW:
|
|
/* ok..start yside xid exchanges */
|
|
if (!ch->in_mpcgroup)
|
|
break;
|
|
if (fsm_getstate(ch->fsm) == CH_XID0_PENDING) {
|
|
fsm_deltimer(&grp->timer);
|
|
fsm_addtimer(&grp->timer,
|
|
MPC_XID_TIMEOUT_VALUE,
|
|
MPCG_EVENT_TIMER, dev);
|
|
fsm_event(grp->fsm, MPCG_EVENT_XID0DO, ch);
|
|
|
|
} else if (fsm_getstate(ch->fsm) < CH_XID7_PENDING1)
|
|
/* attn rcvd before xid0 processed via bh */
|
|
fsm_newstate(ch->fsm, CH_XID7_PENDING1);
|
|
break;
|
|
case MPCG_STATE_XID2INITX:
|
|
case MPCG_STATE_XID0IOWAIT:
|
|
case MPCG_STATE_XID0IOWAIX:
|
|
/* attn rcvd before xid0 processed on ch
|
|
but mid-xid0 processing for group */
|
|
if (fsm_getstate(ch->fsm) < CH_XID7_PENDING1)
|
|
fsm_newstate(ch->fsm, CH_XID7_PENDING1);
|
|
break;
|
|
case MPCG_STATE_XID7INITW:
|
|
case MPCG_STATE_XID7INITX:
|
|
case MPCG_STATE_XID7INITI:
|
|
case MPCG_STATE_XID7INITZ:
|
|
switch (fsm_getstate(ch->fsm)) {
|
|
case CH_XID7_PENDING:
|
|
fsm_newstate(ch->fsm, CH_XID7_PENDING1);
|
|
break;
|
|
case CH_XID7_PENDING2:
|
|
fsm_newstate(ch->fsm, CH_XID7_PENDING3);
|
|
break;
|
|
}
|
|
fsm_event(grp->fsm, MPCG_EVENT_XID7DONE, dev);
|
|
break;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* ctcmpc channel FSM action
|
|
* called from one point in ctcmpc_ch_fsm
|
|
* ctcmpc only
|
|
*/
|
|
static void ctcmpc_chx_attnbusy(fsm_instance *fsm, int event, void *arg)
|
|
{
|
|
struct channel *ch = arg;
|
|
struct net_device *dev = ch->netdev;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
struct mpc_group *grp = priv->mpcg;
|
|
|
|
CTCM_PR_DEBUG("%s(%s): %s\n ChState:%s GrpState:%s\n",
|
|
__func__, dev->name, ch->id,
|
|
fsm_getstate_str(ch->fsm), fsm_getstate_str(grp->fsm));
|
|
|
|
fsm_deltimer(&ch->timer);
|
|
|
|
switch (fsm_getstate(grp->fsm)) {
|
|
case MPCG_STATE_XID0IOWAIT:
|
|
/* vtam wants to be primary.start yside xid exchanges*/
|
|
/* only receive one attn-busy at a time so must not */
|
|
/* change state each time */
|
|
grp->changed_side = 1;
|
|
fsm_newstate(grp->fsm, MPCG_STATE_XID2INITW);
|
|
break;
|
|
case MPCG_STATE_XID2INITW:
|
|
if (grp->changed_side == 1) {
|
|
grp->changed_side = 2;
|
|
break;
|
|
}
|
|
/* process began via call to establish_conn */
|
|
/* so must report failure instead of reverting */
|
|
/* back to ready-for-xid passive state */
|
|
if (grp->estconnfunc)
|
|
goto done;
|
|
/* this attnbusy is NOT the result of xside xid */
|
|
/* collisions so yside must have been triggered */
|
|
/* by an ATTN that was not intended to start XID */
|
|
/* processing. Revert back to ready-for-xid and */
|
|
/* wait for ATTN interrupt to signal xid start */
|
|
if (fsm_getstate(ch->fsm) == CH_XID0_INPROGRESS) {
|
|
fsm_newstate(ch->fsm, CH_XID0_PENDING) ;
|
|
fsm_deltimer(&grp->timer);
|
|
goto done;
|
|
}
|
|
fsm_event(grp->fsm, MPCG_EVENT_INOP, dev);
|
|
goto done;
|
|
case MPCG_STATE_XID2INITX:
|
|
/* XID2 was received before ATTN Busy for second
|
|
channel.Send yside xid for second channel.
|
|
*/
|
|
if (grp->changed_side == 1) {
|
|
grp->changed_side = 2;
|
|
break;
|
|
}
|
|
fallthrough;
|
|
case MPCG_STATE_XID0IOWAIX:
|
|
case MPCG_STATE_XID7INITW:
|
|
case MPCG_STATE_XID7INITX:
|
|
case MPCG_STATE_XID7INITI:
|
|
case MPCG_STATE_XID7INITZ:
|
|
default:
|
|
/* multiple attn-busy indicates too out-of-sync */
|
|
/* and they are certainly not being received as part */
|
|
/* of valid mpc group negotiations.. */
|
|
fsm_event(grp->fsm, MPCG_EVENT_INOP, dev);
|
|
goto done;
|
|
}
|
|
|
|
if (grp->changed_side == 1) {
|
|
fsm_deltimer(&grp->timer);
|
|
fsm_addtimer(&grp->timer, MPC_XID_TIMEOUT_VALUE,
|
|
MPCG_EVENT_TIMER, dev);
|
|
}
|
|
if (ch->in_mpcgroup)
|
|
fsm_event(grp->fsm, MPCG_EVENT_XID0DO, ch);
|
|
else
|
|
CTCM_DBF_TEXT_(MPC_ERROR, CTC_DBF_ERROR,
|
|
"%s(%s): channel %s not added to group",
|
|
CTCM_FUNTAIL, dev->name, ch->id);
|
|
|
|
done:
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* ctcmpc channel FSM action
|
|
* called from several points in ctcmpc_ch_fsm
|
|
* ctcmpc only
|
|
*/
|
|
static void ctcmpc_chx_resend(fsm_instance *fsm, int event, void *arg)
|
|
{
|
|
struct channel *ch = arg;
|
|
struct net_device *dev = ch->netdev;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
struct mpc_group *grp = priv->mpcg;
|
|
|
|
fsm_event(grp->fsm, MPCG_EVENT_XID0DO, ch);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* ctcmpc channel FSM action
|
|
* called from several points in ctcmpc_ch_fsm
|
|
* ctcmpc only
|
|
*/
|
|
static void ctcmpc_chx_send_sweep(fsm_instance *fsm, int event, void *arg)
|
|
{
|
|
struct channel *ach = arg;
|
|
struct net_device *dev = ach->netdev;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
struct mpc_group *grp = priv->mpcg;
|
|
struct channel *wch = priv->channel[CTCM_WRITE];
|
|
struct channel *rch = priv->channel[CTCM_READ];
|
|
struct sk_buff *skb;
|
|
struct th_sweep *header;
|
|
int rc = 0;
|
|
unsigned long saveflags = 0;
|
|
|
|
CTCM_PR_DEBUG("ctcmpc enter: %s(): cp=%i ch=0x%p id=%s\n",
|
|
__func__, smp_processor_id(), ach, ach->id);
|
|
|
|
if (grp->in_sweep == 0)
|
|
goto done;
|
|
|
|
CTCM_PR_DBGDATA("%s: 1: ToVTAM_th_seq= %08x\n" ,
|
|
__func__, wch->th_seq_num);
|
|
CTCM_PR_DBGDATA("%s: 1: FromVTAM_th_seq= %08x\n" ,
|
|
__func__, rch->th_seq_num);
|
|
|
|
if (fsm_getstate(wch->fsm) != CTC_STATE_TXIDLE) {
|
|
/* give the previous IO time to complete */
|
|
fsm_addtimer(&wch->sweep_timer,
|
|
200, CTC_EVENT_RSWEEP_TIMER, wch);
|
|
goto done;
|
|
}
|
|
|
|
skb = skb_dequeue(&wch->sweep_queue);
|
|
if (!skb)
|
|
goto done;
|
|
|
|
if (set_normalized_cda(&wch->ccw[4], skb->data)) {
|
|
grp->in_sweep = 0;
|
|
ctcm_clear_busy_do(dev);
|
|
dev_kfree_skb_any(skb);
|
|
fsm_event(grp->fsm, MPCG_EVENT_INOP, dev);
|
|
goto done;
|
|
} else {
|
|
refcount_inc(&skb->users);
|
|
skb_queue_tail(&wch->io_queue, skb);
|
|
}
|
|
|
|
/* send out the sweep */
|
|
wch->ccw[4].count = skb->len;
|
|
|
|
header = (struct th_sweep *)skb->data;
|
|
switch (header->th.th_ch_flag) {
|
|
case TH_SWEEP_REQ:
|
|
grp->sweep_req_pend_num--;
|
|
break;
|
|
case TH_SWEEP_RESP:
|
|
grp->sweep_rsp_pend_num--;
|
|
break;
|
|
}
|
|
|
|
header->sw.th_last_seq = wch->th_seq_num;
|
|
|
|
CTCM_CCW_DUMP((char *)&wch->ccw[3], sizeof(struct ccw1) * 3);
|
|
CTCM_PR_DBGDATA("%s: sweep packet\n", __func__);
|
|
CTCM_D3_DUMP((char *)header, TH_SWEEP_LENGTH);
|
|
|
|
fsm_addtimer(&wch->timer, CTCM_TIME_5_SEC, CTC_EVENT_TIMER, wch);
|
|
fsm_newstate(wch->fsm, CTC_STATE_TX);
|
|
|
|
spin_lock_irqsave(get_ccwdev_lock(wch->cdev), saveflags);
|
|
wch->prof.send_stamp = jiffies;
|
|
rc = ccw_device_start(wch->cdev, &wch->ccw[3], 0, 0xff, 0);
|
|
spin_unlock_irqrestore(get_ccwdev_lock(wch->cdev), saveflags);
|
|
|
|
if ((grp->sweep_req_pend_num == 0) &&
|
|
(grp->sweep_rsp_pend_num == 0)) {
|
|
grp->in_sweep = 0;
|
|
rch->th_seq_num = 0x00;
|
|
wch->th_seq_num = 0x00;
|
|
ctcm_clear_busy_do(dev);
|
|
}
|
|
|
|
CTCM_PR_DBGDATA("%s: To-/From-VTAM_th_seq = %08x/%08x\n" ,
|
|
__func__, wch->th_seq_num, rch->th_seq_num);
|
|
|
|
if (rc != 0)
|
|
ctcm_ccw_check_rc(wch, rc, "send sweep");
|
|
|
|
done:
|
|
return;
|
|
}
|
|
|
|
|
|
/*
|
|
* The ctcmpc statemachine for a channel.
|
|
*/
|
|
|
|
const fsm_node ctcmpc_ch_fsm[] = {
|
|
{ CTC_STATE_STOPPED, CTC_EVENT_STOP, ctcm_action_nop },
|
|
{ CTC_STATE_STOPPED, CTC_EVENT_START, ctcm_chx_start },
|
|
{ CTC_STATE_STOPPED, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
{ CTC_STATE_STOPPED, CTC_EVENT_FINSTAT, ctcm_action_nop },
|
|
{ CTC_STATE_STOPPED, CTC_EVENT_MC_FAIL, ctcm_action_nop },
|
|
|
|
{ CTC_STATE_NOTOP, CTC_EVENT_STOP, ctcm_chx_stop },
|
|
{ CTC_STATE_NOTOP, CTC_EVENT_START, ctcm_action_nop },
|
|
{ CTC_STATE_NOTOP, CTC_EVENT_FINSTAT, ctcm_action_nop },
|
|
{ CTC_STATE_NOTOP, CTC_EVENT_MC_FAIL, ctcm_action_nop },
|
|
{ CTC_STATE_NOTOP, CTC_EVENT_MC_GOOD, ctcm_chx_start },
|
|
{ CTC_STATE_NOTOP, CTC_EVENT_UC_RCRESET, ctcm_chx_stop },
|
|
{ CTC_STATE_NOTOP, CTC_EVENT_UC_RSRESET, ctcm_chx_stop },
|
|
{ CTC_STATE_NOTOP, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
|
|
{ CTC_STATE_STARTWAIT, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CTC_STATE_STARTWAIT, CTC_EVENT_START, ctcm_action_nop },
|
|
{ CTC_STATE_STARTWAIT, CTC_EVENT_FINSTAT, ctcm_chx_setmode },
|
|
{ CTC_STATE_STARTWAIT, CTC_EVENT_TIMER, ctcm_chx_setuperr },
|
|
{ CTC_STATE_STARTWAIT, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
{ CTC_STATE_STARTWAIT, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
|
|
{ CTC_STATE_STARTRETRY, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CTC_STATE_STARTRETRY, CTC_EVENT_TIMER, ctcm_chx_setmode },
|
|
{ CTC_STATE_STARTRETRY, CTC_EVENT_FINSTAT, ctcm_chx_setmode },
|
|
{ CTC_STATE_STARTRETRY, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
{ CTC_STATE_STARTRETRY, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
|
|
{ CTC_STATE_SETUPWAIT, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CTC_STATE_SETUPWAIT, CTC_EVENT_START, ctcm_action_nop },
|
|
{ CTC_STATE_SETUPWAIT, CTC_EVENT_FINSTAT, ctcmpc_chx_firstio },
|
|
{ CTC_STATE_SETUPWAIT, CTC_EVENT_UC_RCRESET, ctcm_chx_setuperr },
|
|
{ CTC_STATE_SETUPWAIT, CTC_EVENT_UC_RSRESET, ctcm_chx_setuperr },
|
|
{ CTC_STATE_SETUPWAIT, CTC_EVENT_TIMER, ctcm_chx_setmode },
|
|
{ CTC_STATE_SETUPWAIT, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
{ CTC_STATE_SETUPWAIT, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
|
|
{ CTC_STATE_RXINIT, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CTC_STATE_RXINIT, CTC_EVENT_START, ctcm_action_nop },
|
|
{ CTC_STATE_RXINIT, CTC_EVENT_FINSTAT, ctcmpc_chx_rxidle },
|
|
{ CTC_STATE_RXINIT, CTC_EVENT_UC_RCRESET, ctcm_chx_rxiniterr },
|
|
{ CTC_STATE_RXINIT, CTC_EVENT_UC_RSRESET, ctcm_chx_rxiniterr },
|
|
{ CTC_STATE_RXINIT, CTC_EVENT_TIMER, ctcm_chx_rxiniterr },
|
|
{ CTC_STATE_RXINIT, CTC_EVENT_ATTNBUSY, ctcm_chx_rxinitfail },
|
|
{ CTC_STATE_RXINIT, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
{ CTC_STATE_RXINIT, CTC_EVENT_UC_ZERO, ctcmpc_chx_firstio },
|
|
{ CTC_STATE_RXINIT, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
|
|
{ CH_XID0_PENDING, CTC_EVENT_FINSTAT, ctcm_action_nop },
|
|
{ CH_XID0_PENDING, CTC_EVENT_ATTN, ctcmpc_chx_attn },
|
|
{ CH_XID0_PENDING, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CH_XID0_PENDING, CTC_EVENT_START, ctcm_action_nop },
|
|
{ CH_XID0_PENDING, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
{ CH_XID0_PENDING, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
{ CH_XID0_PENDING, CTC_EVENT_UC_RCRESET, ctcm_chx_setuperr },
|
|
{ CH_XID0_PENDING, CTC_EVENT_UC_RSRESET, ctcm_chx_setuperr },
|
|
{ CH_XID0_PENDING, CTC_EVENT_UC_RSRESET, ctcm_chx_setuperr },
|
|
{ CH_XID0_PENDING, CTC_EVENT_ATTNBUSY, ctcm_chx_iofatal },
|
|
|
|
{ CH_XID0_INPROGRESS, CTC_EVENT_FINSTAT, ctcmpc_chx_rx },
|
|
{ CH_XID0_INPROGRESS, CTC_EVENT_ATTN, ctcmpc_chx_attn },
|
|
{ CH_XID0_INPROGRESS, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CH_XID0_INPROGRESS, CTC_EVENT_START, ctcm_action_nop },
|
|
{ CH_XID0_INPROGRESS, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
{ CH_XID0_INPROGRESS, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
{ CH_XID0_INPROGRESS, CTC_EVENT_UC_ZERO, ctcmpc_chx_rx },
|
|
{ CH_XID0_INPROGRESS, CTC_EVENT_UC_RCRESET, ctcm_chx_setuperr },
|
|
{ CH_XID0_INPROGRESS, CTC_EVENT_ATTNBUSY, ctcmpc_chx_attnbusy },
|
|
{ CH_XID0_INPROGRESS, CTC_EVENT_TIMER, ctcmpc_chx_resend },
|
|
{ CH_XID0_INPROGRESS, CTC_EVENT_IO_EBUSY, ctcm_chx_fail },
|
|
|
|
{ CH_XID7_PENDING, CTC_EVENT_FINSTAT, ctcmpc_chx_rx },
|
|
{ CH_XID7_PENDING, CTC_EVENT_ATTN, ctcmpc_chx_attn },
|
|
{ CH_XID7_PENDING, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CH_XID7_PENDING, CTC_EVENT_START, ctcm_action_nop },
|
|
{ CH_XID7_PENDING, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
{ CH_XID7_PENDING, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
{ CH_XID7_PENDING, CTC_EVENT_UC_ZERO, ctcmpc_chx_rx },
|
|
{ CH_XID7_PENDING, CTC_EVENT_UC_RCRESET, ctcm_chx_setuperr },
|
|
{ CH_XID7_PENDING, CTC_EVENT_UC_RSRESET, ctcm_chx_setuperr },
|
|
{ CH_XID7_PENDING, CTC_EVENT_UC_RSRESET, ctcm_chx_setuperr },
|
|
{ CH_XID7_PENDING, CTC_EVENT_ATTNBUSY, ctcm_chx_iofatal },
|
|
{ CH_XID7_PENDING, CTC_EVENT_TIMER, ctcmpc_chx_resend },
|
|
{ CH_XID7_PENDING, CTC_EVENT_IO_EBUSY, ctcm_chx_fail },
|
|
|
|
{ CH_XID7_PENDING1, CTC_EVENT_FINSTAT, ctcmpc_chx_rx },
|
|
{ CH_XID7_PENDING1, CTC_EVENT_ATTN, ctcmpc_chx_attn },
|
|
{ CH_XID7_PENDING1, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CH_XID7_PENDING1, CTC_EVENT_START, ctcm_action_nop },
|
|
{ CH_XID7_PENDING1, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
{ CH_XID7_PENDING1, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
{ CH_XID7_PENDING1, CTC_EVENT_UC_ZERO, ctcmpc_chx_rx },
|
|
{ CH_XID7_PENDING1, CTC_EVENT_UC_RCRESET, ctcm_chx_setuperr },
|
|
{ CH_XID7_PENDING1, CTC_EVENT_UC_RSRESET, ctcm_chx_setuperr },
|
|
{ CH_XID7_PENDING1, CTC_EVENT_ATTNBUSY, ctcm_chx_iofatal },
|
|
{ CH_XID7_PENDING1, CTC_EVENT_TIMER, ctcmpc_chx_resend },
|
|
{ CH_XID7_PENDING1, CTC_EVENT_IO_EBUSY, ctcm_chx_fail },
|
|
|
|
{ CH_XID7_PENDING2, CTC_EVENT_FINSTAT, ctcmpc_chx_rx },
|
|
{ CH_XID7_PENDING2, CTC_EVENT_ATTN, ctcmpc_chx_attn },
|
|
{ CH_XID7_PENDING2, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CH_XID7_PENDING2, CTC_EVENT_START, ctcm_action_nop },
|
|
{ CH_XID7_PENDING2, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
{ CH_XID7_PENDING2, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
{ CH_XID7_PENDING2, CTC_EVENT_UC_ZERO, ctcmpc_chx_rx },
|
|
{ CH_XID7_PENDING2, CTC_EVENT_UC_RCRESET, ctcm_chx_setuperr },
|
|
{ CH_XID7_PENDING2, CTC_EVENT_UC_RSRESET, ctcm_chx_setuperr },
|
|
{ CH_XID7_PENDING2, CTC_EVENT_ATTNBUSY, ctcm_chx_iofatal },
|
|
{ CH_XID7_PENDING2, CTC_EVENT_TIMER, ctcmpc_chx_resend },
|
|
{ CH_XID7_PENDING2, CTC_EVENT_IO_EBUSY, ctcm_chx_fail },
|
|
|
|
{ CH_XID7_PENDING3, CTC_EVENT_FINSTAT, ctcmpc_chx_rx },
|
|
{ CH_XID7_PENDING3, CTC_EVENT_ATTN, ctcmpc_chx_attn },
|
|
{ CH_XID7_PENDING3, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CH_XID7_PENDING3, CTC_EVENT_START, ctcm_action_nop },
|
|
{ CH_XID7_PENDING3, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
{ CH_XID7_PENDING3, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
{ CH_XID7_PENDING3, CTC_EVENT_UC_ZERO, ctcmpc_chx_rx },
|
|
{ CH_XID7_PENDING3, CTC_EVENT_UC_RCRESET, ctcm_chx_setuperr },
|
|
{ CH_XID7_PENDING3, CTC_EVENT_UC_RSRESET, ctcm_chx_setuperr },
|
|
{ CH_XID7_PENDING3, CTC_EVENT_ATTNBUSY, ctcm_chx_iofatal },
|
|
{ CH_XID7_PENDING3, CTC_EVENT_TIMER, ctcmpc_chx_resend },
|
|
{ CH_XID7_PENDING3, CTC_EVENT_IO_EBUSY, ctcm_chx_fail },
|
|
|
|
{ CH_XID7_PENDING4, CTC_EVENT_FINSTAT, ctcmpc_chx_rx },
|
|
{ CH_XID7_PENDING4, CTC_EVENT_ATTN, ctcmpc_chx_attn },
|
|
{ CH_XID7_PENDING4, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CH_XID7_PENDING4, CTC_EVENT_START, ctcm_action_nop },
|
|
{ CH_XID7_PENDING4, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
{ CH_XID7_PENDING4, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
{ CH_XID7_PENDING4, CTC_EVENT_UC_ZERO, ctcmpc_chx_rx },
|
|
{ CH_XID7_PENDING4, CTC_EVENT_UC_RCRESET, ctcm_chx_setuperr },
|
|
{ CH_XID7_PENDING4, CTC_EVENT_UC_RSRESET, ctcm_chx_setuperr },
|
|
{ CH_XID7_PENDING4, CTC_EVENT_ATTNBUSY, ctcm_chx_iofatal },
|
|
{ CH_XID7_PENDING4, CTC_EVENT_TIMER, ctcmpc_chx_resend },
|
|
{ CH_XID7_PENDING4, CTC_EVENT_IO_EBUSY, ctcm_chx_fail },
|
|
|
|
{ CTC_STATE_RXIDLE, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CTC_STATE_RXIDLE, CTC_EVENT_START, ctcm_action_nop },
|
|
{ CTC_STATE_RXIDLE, CTC_EVENT_FINSTAT, ctcmpc_chx_rx },
|
|
{ CTC_STATE_RXIDLE, CTC_EVENT_UC_RCRESET, ctcm_chx_rxdisc },
|
|
{ CTC_STATE_RXIDLE, CTC_EVENT_UC_RSRESET, ctcm_chx_fail },
|
|
{ CTC_STATE_RXIDLE, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
{ CTC_STATE_RXIDLE, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
{ CTC_STATE_RXIDLE, CTC_EVENT_UC_ZERO, ctcmpc_chx_rx },
|
|
|
|
{ CTC_STATE_TXINIT, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CTC_STATE_TXINIT, CTC_EVENT_START, ctcm_action_nop },
|
|
{ CTC_STATE_TXINIT, CTC_EVENT_FINSTAT, ctcm_chx_txidle },
|
|
{ CTC_STATE_TXINIT, CTC_EVENT_UC_RCRESET, ctcm_chx_txiniterr },
|
|
{ CTC_STATE_TXINIT, CTC_EVENT_UC_RSRESET, ctcm_chx_txiniterr },
|
|
{ CTC_STATE_TXINIT, CTC_EVENT_TIMER, ctcm_chx_txiniterr },
|
|
{ CTC_STATE_TXINIT, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
{ CTC_STATE_TXINIT, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
{ CTC_STATE_TXINIT, CTC_EVENT_RSWEEP_TIMER, ctcmpc_chx_send_sweep },
|
|
|
|
{ CTC_STATE_TXIDLE, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CTC_STATE_TXIDLE, CTC_EVENT_START, ctcm_action_nop },
|
|
{ CTC_STATE_TXIDLE, CTC_EVENT_FINSTAT, ctcmpc_chx_firstio },
|
|
{ CTC_STATE_TXIDLE, CTC_EVENT_UC_RCRESET, ctcm_chx_fail },
|
|
{ CTC_STATE_TXIDLE, CTC_EVENT_UC_RSRESET, ctcm_chx_fail },
|
|
{ CTC_STATE_TXIDLE, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
{ CTC_STATE_TXIDLE, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
{ CTC_STATE_TXIDLE, CTC_EVENT_RSWEEP_TIMER, ctcmpc_chx_send_sweep },
|
|
|
|
{ CTC_STATE_TERM, CTC_EVENT_STOP, ctcm_action_nop },
|
|
{ CTC_STATE_TERM, CTC_EVENT_START, ctcm_chx_restart },
|
|
{ CTC_STATE_TERM, CTC_EVENT_FINSTAT, ctcm_chx_stopped },
|
|
{ CTC_STATE_TERM, CTC_EVENT_UC_RCRESET, ctcm_action_nop },
|
|
{ CTC_STATE_TERM, CTC_EVENT_UC_RSRESET, ctcm_action_nop },
|
|
{ CTC_STATE_TERM, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
{ CTC_STATE_TERM, CTC_EVENT_IO_EBUSY, ctcm_chx_fail },
|
|
{ CTC_STATE_TERM, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
|
|
{ CTC_STATE_DTERM, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CTC_STATE_DTERM, CTC_EVENT_START, ctcm_chx_restart },
|
|
{ CTC_STATE_DTERM, CTC_EVENT_FINSTAT, ctcm_chx_setmode },
|
|
{ CTC_STATE_DTERM, CTC_EVENT_UC_RCRESET, ctcm_action_nop },
|
|
{ CTC_STATE_DTERM, CTC_EVENT_UC_RSRESET, ctcm_action_nop },
|
|
{ CTC_STATE_DTERM, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
{ CTC_STATE_DTERM, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
|
|
{ CTC_STATE_TX, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CTC_STATE_TX, CTC_EVENT_START, ctcm_action_nop },
|
|
{ CTC_STATE_TX, CTC_EVENT_FINSTAT, ctcmpc_chx_txdone },
|
|
{ CTC_STATE_TX, CTC_EVENT_UC_RCRESET, ctcm_chx_fail },
|
|
{ CTC_STATE_TX, CTC_EVENT_UC_RSRESET, ctcm_chx_fail },
|
|
{ CTC_STATE_TX, CTC_EVENT_TIMER, ctcm_chx_txretry },
|
|
{ CTC_STATE_TX, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
{ CTC_STATE_TX, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
{ CTC_STATE_TX, CTC_EVENT_RSWEEP_TIMER, ctcmpc_chx_send_sweep },
|
|
{ CTC_STATE_TX, CTC_EVENT_IO_EBUSY, ctcm_chx_fail },
|
|
|
|
{ CTC_STATE_RXERR, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CTC_STATE_TXERR, CTC_EVENT_STOP, ctcm_chx_haltio },
|
|
{ CTC_STATE_TXERR, CTC_EVENT_IO_ENODEV, ctcm_chx_iofatal },
|
|
{ CTC_STATE_TXERR, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
{ CTC_STATE_RXERR, CTC_EVENT_MC_FAIL, ctcm_chx_fail },
|
|
};
|
|
|
|
int mpc_ch_fsm_len = ARRAY_SIZE(ctcmpc_ch_fsm);
|
|
|
|
/*
|
|
* Actions for interface - statemachine.
|
|
*/
|
|
|
|
/*
|
|
* Startup channels by sending CTC_EVENT_START to each channel.
|
|
*
|
|
* fi An instance of an interface statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from struct net_device * upon call.
|
|
*/
|
|
static void dev_action_start(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
struct net_device *dev = arg;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
int direction;
|
|
|
|
CTCMY_DBF_DEV_NAME(SETUP, dev, "");
|
|
|
|
fsm_deltimer(&priv->restart_timer);
|
|
fsm_newstate(fi, DEV_STATE_STARTWAIT_RXTX);
|
|
if (IS_MPC(priv))
|
|
priv->mpcg->channels_terminating = 0;
|
|
for (direction = CTCM_READ; direction <= CTCM_WRITE; direction++) {
|
|
struct channel *ch = priv->channel[direction];
|
|
fsm_event(ch->fsm, CTC_EVENT_START, ch);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Shutdown channels by sending CTC_EVENT_STOP to each channel.
|
|
*
|
|
* fi An instance of an interface statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from struct net_device * upon call.
|
|
*/
|
|
static void dev_action_stop(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
int direction;
|
|
struct net_device *dev = arg;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
|
|
CTCMY_DBF_DEV_NAME(SETUP, dev, "");
|
|
|
|
fsm_newstate(fi, DEV_STATE_STOPWAIT_RXTX);
|
|
for (direction = CTCM_READ; direction <= CTCM_WRITE; direction++) {
|
|
struct channel *ch = priv->channel[direction];
|
|
fsm_event(ch->fsm, CTC_EVENT_STOP, ch);
|
|
ch->th_seq_num = 0x00;
|
|
CTCM_PR_DEBUG("%s: CH_th_seq= %08x\n",
|
|
__func__, ch->th_seq_num);
|
|
}
|
|
if (IS_MPC(priv))
|
|
fsm_newstate(priv->mpcg->fsm, MPCG_STATE_RESET);
|
|
}
|
|
|
|
static void dev_action_restart(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
int restart_timer;
|
|
struct net_device *dev = arg;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
|
|
CTCMY_DBF_DEV_NAME(TRACE, dev, "");
|
|
|
|
if (IS_MPC(priv)) {
|
|
restart_timer = CTCM_TIME_1_SEC;
|
|
} else {
|
|
restart_timer = CTCM_TIME_5_SEC;
|
|
}
|
|
dev_info(&dev->dev, "Restarting device\n");
|
|
|
|
dev_action_stop(fi, event, arg);
|
|
fsm_event(priv->fsm, DEV_EVENT_STOP, dev);
|
|
if (IS_MPC(priv))
|
|
fsm_newstate(priv->mpcg->fsm, MPCG_STATE_RESET);
|
|
|
|
/* going back into start sequence too quickly can */
|
|
/* result in the other side becoming unreachable due */
|
|
/* to sense reported when IO is aborted */
|
|
fsm_addtimer(&priv->restart_timer, restart_timer,
|
|
DEV_EVENT_START, dev);
|
|
}
|
|
|
|
/*
|
|
* Called from channel statemachine
|
|
* when a channel is up and running.
|
|
*
|
|
* fi An instance of an interface statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from struct net_device * upon call.
|
|
*/
|
|
static void dev_action_chup(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
struct net_device *dev = arg;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
int dev_stat = fsm_getstate(fi);
|
|
|
|
CTCM_DBF_TEXT_(SETUP, CTC_DBF_NOTICE,
|
|
"%s(%s): priv = %p [%d,%d]\n ", CTCM_FUNTAIL,
|
|
dev->name, dev->ml_priv, dev_stat, event);
|
|
|
|
switch (fsm_getstate(fi)) {
|
|
case DEV_STATE_STARTWAIT_RXTX:
|
|
if (event == DEV_EVENT_RXUP)
|
|
fsm_newstate(fi, DEV_STATE_STARTWAIT_TX);
|
|
else
|
|
fsm_newstate(fi, DEV_STATE_STARTWAIT_RX);
|
|
break;
|
|
case DEV_STATE_STARTWAIT_RX:
|
|
if (event == DEV_EVENT_RXUP) {
|
|
fsm_newstate(fi, DEV_STATE_RUNNING);
|
|
dev_info(&dev->dev,
|
|
"Connected with remote side\n");
|
|
ctcm_clear_busy(dev);
|
|
}
|
|
break;
|
|
case DEV_STATE_STARTWAIT_TX:
|
|
if (event == DEV_EVENT_TXUP) {
|
|
fsm_newstate(fi, DEV_STATE_RUNNING);
|
|
dev_info(&dev->dev,
|
|
"Connected with remote side\n");
|
|
ctcm_clear_busy(dev);
|
|
}
|
|
break;
|
|
case DEV_STATE_STOPWAIT_TX:
|
|
if (event == DEV_EVENT_RXUP)
|
|
fsm_newstate(fi, DEV_STATE_STOPWAIT_RXTX);
|
|
break;
|
|
case DEV_STATE_STOPWAIT_RX:
|
|
if (event == DEV_EVENT_TXUP)
|
|
fsm_newstate(fi, DEV_STATE_STOPWAIT_RXTX);
|
|
break;
|
|
}
|
|
|
|
if (IS_MPC(priv)) {
|
|
if (event == DEV_EVENT_RXUP)
|
|
mpc_channel_action(priv->channel[CTCM_READ],
|
|
CTCM_READ, MPC_CHANNEL_ADD);
|
|
else
|
|
mpc_channel_action(priv->channel[CTCM_WRITE],
|
|
CTCM_WRITE, MPC_CHANNEL_ADD);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Called from device statemachine
|
|
* when a channel has been shutdown.
|
|
*
|
|
* fi An instance of an interface statemachine.
|
|
* event The event, just happened.
|
|
* arg Generic pointer, casted from struct net_device * upon call.
|
|
*/
|
|
static void dev_action_chdown(fsm_instance *fi, int event, void *arg)
|
|
{
|
|
|
|
struct net_device *dev = arg;
|
|
struct ctcm_priv *priv = dev->ml_priv;
|
|
|
|
CTCMY_DBF_DEV_NAME(SETUP, dev, "");
|
|
|
|
switch (fsm_getstate(fi)) {
|
|
case DEV_STATE_RUNNING:
|
|
if (event == DEV_EVENT_TXDOWN)
|
|
fsm_newstate(fi, DEV_STATE_STARTWAIT_TX);
|
|
else
|
|
fsm_newstate(fi, DEV_STATE_STARTWAIT_RX);
|
|
break;
|
|
case DEV_STATE_STARTWAIT_RX:
|
|
if (event == DEV_EVENT_TXDOWN)
|
|
fsm_newstate(fi, DEV_STATE_STARTWAIT_RXTX);
|
|
break;
|
|
case DEV_STATE_STARTWAIT_TX:
|
|
if (event == DEV_EVENT_RXDOWN)
|
|
fsm_newstate(fi, DEV_STATE_STARTWAIT_RXTX);
|
|
break;
|
|
case DEV_STATE_STOPWAIT_RXTX:
|
|
if (event == DEV_EVENT_TXDOWN)
|
|
fsm_newstate(fi, DEV_STATE_STOPWAIT_RX);
|
|
else
|
|
fsm_newstate(fi, DEV_STATE_STOPWAIT_TX);
|
|
break;
|
|
case DEV_STATE_STOPWAIT_RX:
|
|
if (event == DEV_EVENT_RXDOWN)
|
|
fsm_newstate(fi, DEV_STATE_STOPPED);
|
|
break;
|
|
case DEV_STATE_STOPWAIT_TX:
|
|
if (event == DEV_EVENT_TXDOWN)
|
|
fsm_newstate(fi, DEV_STATE_STOPPED);
|
|
break;
|
|
}
|
|
if (IS_MPC(priv)) {
|
|
if (event == DEV_EVENT_RXDOWN)
|
|
mpc_channel_action(priv->channel[CTCM_READ],
|
|
CTCM_READ, MPC_CHANNEL_REMOVE);
|
|
else
|
|
mpc_channel_action(priv->channel[CTCM_WRITE],
|
|
CTCM_WRITE, MPC_CHANNEL_REMOVE);
|
|
}
|
|
}
|
|
|
|
const fsm_node dev_fsm[] = {
|
|
{ DEV_STATE_STOPPED, DEV_EVENT_START, dev_action_start },
|
|
{ DEV_STATE_STOPWAIT_RXTX, DEV_EVENT_START, dev_action_start },
|
|
{ DEV_STATE_STOPWAIT_RXTX, DEV_EVENT_RXDOWN, dev_action_chdown },
|
|
{ DEV_STATE_STOPWAIT_RXTX, DEV_EVENT_TXDOWN, dev_action_chdown },
|
|
{ DEV_STATE_STOPWAIT_RXTX, DEV_EVENT_RESTART, dev_action_restart },
|
|
{ DEV_STATE_STOPWAIT_RX, DEV_EVENT_START, dev_action_start },
|
|
{ DEV_STATE_STOPWAIT_RX, DEV_EVENT_RXUP, dev_action_chup },
|
|
{ DEV_STATE_STOPWAIT_RX, DEV_EVENT_TXUP, dev_action_chup },
|
|
{ DEV_STATE_STOPWAIT_RX, DEV_EVENT_RXDOWN, dev_action_chdown },
|
|
{ DEV_STATE_STOPWAIT_RX, DEV_EVENT_RESTART, dev_action_restart },
|
|
{ DEV_STATE_STOPWAIT_TX, DEV_EVENT_START, dev_action_start },
|
|
{ DEV_STATE_STOPWAIT_TX, DEV_EVENT_RXUP, dev_action_chup },
|
|
{ DEV_STATE_STOPWAIT_TX, DEV_EVENT_TXUP, dev_action_chup },
|
|
{ DEV_STATE_STOPWAIT_TX, DEV_EVENT_TXDOWN, dev_action_chdown },
|
|
{ DEV_STATE_STOPWAIT_TX, DEV_EVENT_RESTART, dev_action_restart },
|
|
{ DEV_STATE_STARTWAIT_RXTX, DEV_EVENT_STOP, dev_action_stop },
|
|
{ DEV_STATE_STARTWAIT_RXTX, DEV_EVENT_RXUP, dev_action_chup },
|
|
{ DEV_STATE_STARTWAIT_RXTX, DEV_EVENT_TXUP, dev_action_chup },
|
|
{ DEV_STATE_STARTWAIT_RXTX, DEV_EVENT_RXDOWN, dev_action_chdown },
|
|
{ DEV_STATE_STARTWAIT_RXTX, DEV_EVENT_TXDOWN, dev_action_chdown },
|
|
{ DEV_STATE_STARTWAIT_RXTX, DEV_EVENT_RESTART, dev_action_restart },
|
|
{ DEV_STATE_STARTWAIT_TX, DEV_EVENT_STOP, dev_action_stop },
|
|
{ DEV_STATE_STARTWAIT_TX, DEV_EVENT_RXUP, dev_action_chup },
|
|
{ DEV_STATE_STARTWAIT_TX, DEV_EVENT_TXUP, dev_action_chup },
|
|
{ DEV_STATE_STARTWAIT_TX, DEV_EVENT_RXDOWN, dev_action_chdown },
|
|
{ DEV_STATE_STARTWAIT_TX, DEV_EVENT_RESTART, dev_action_restart },
|
|
{ DEV_STATE_STARTWAIT_RX, DEV_EVENT_STOP, dev_action_stop },
|
|
{ DEV_STATE_STARTWAIT_RX, DEV_EVENT_RXUP, dev_action_chup },
|
|
{ DEV_STATE_STARTWAIT_RX, DEV_EVENT_TXUP, dev_action_chup },
|
|
{ DEV_STATE_STARTWAIT_RX, DEV_EVENT_TXDOWN, dev_action_chdown },
|
|
{ DEV_STATE_STARTWAIT_RX, DEV_EVENT_RESTART, dev_action_restart },
|
|
{ DEV_STATE_RUNNING, DEV_EVENT_STOP, dev_action_stop },
|
|
{ DEV_STATE_RUNNING, DEV_EVENT_RXDOWN, dev_action_chdown },
|
|
{ DEV_STATE_RUNNING, DEV_EVENT_TXDOWN, dev_action_chdown },
|
|
{ DEV_STATE_RUNNING, DEV_EVENT_TXUP, ctcm_action_nop },
|
|
{ DEV_STATE_RUNNING, DEV_EVENT_RXUP, ctcm_action_nop },
|
|
{ DEV_STATE_RUNNING, DEV_EVENT_RESTART, dev_action_restart },
|
|
};
|
|
|
|
int dev_fsm_len = ARRAY_SIZE(dev_fsm);
|
|
|
|
/* --- This is the END my friend --- */
|
|
|