/*
- * $Id: ctcmain.c,v 1.59 2004/04/21 17:10:13 ptiedem Exp $
- *
* CTC / ESCON network driver
*
* Copyright (C) 2001 IBM Deutschland Entwicklung GmbH, IBM Corporation
* Author(s): Fritz Elfert (elfert@de.ibm.com, felfert@millenux.com)
* Fixes by : Jochen Röhrig (roehrig@de.ibm.com)
* Arnaldo Carvalho de Melo <acme@conectiva.com.br>
- * Driver Model stuff by : Cornelia Huck <cohuck@de.ibm.com>
+ Peter Tiedemann (ptiedem@de.ibm.com)
+ * Driver Model stuff by : Cornelia Huck <cornelia.huck@de.ibm.com>
*
* Documentation used:
* - Principles of Operation (IBM doc#: SA22-7201-06)
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
- * RELEASE-TAG: CTC/ESCON network driver $Revision: 1.59 $
- *
*/
-\f
#undef DEBUG
-
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/timer.h>
#include <linux/sched.h>
+#include <linux/bitops.h>
#include <linux/signal.h>
#include <linux/string.h>
#include <asm/io.h>
#include <asm/ccwdev.h>
#include <asm/ccwgroup.h>
-#include <asm/bitops.h>
#include <asm/uaccess.h>
#include <asm/idals.h>
-#include "ctctty.h"
#include "fsm.h"
#include "cu3088.h"
+#include "ctcdbug.h"
+#include "ctcmain.h"
+
MODULE_AUTHOR("(C) 2000 IBM Corp. by Fritz Elfert (felfert@millenux.com)");
MODULE_DESCRIPTION("Linux for S/390 CTC/Escon Driver");
MODULE_LICENSE("GPL");
-
-/**
- * CCW commands, used in this driver.
- */
-#define CCW_CMD_WRITE 0x01
-#define CCW_CMD_READ 0x02
-#define CCW_CMD_SET_EXTENDED 0xc3
-#define CCW_CMD_PREPARE 0xe3
-
-#define CTC_PROTO_S390 0
-#define CTC_PROTO_LINUX 1
-#define CTC_PROTO_LINUX_TTY 2
-#define CTC_PROTO_OS390 3
-#define CTC_PROTO_MAX 3
-
-#define CTC_BUFSIZE_LIMIT 65535
-#define CTC_BUFSIZE_DEFAULT 32768
-
-#define CTC_TIMEOUT_5SEC 5000
-
-#define CTC_INITIAL_BLOCKLEN 2
-
-#define READ 0
-#define WRITE 1
-
-#define CTC_ID_SIZE BUS_ID_SIZE+3
-\f
-
-struct ctc_profile {
- unsigned long maxmulti;
- unsigned long maxcqueue;
- unsigned long doios_single;
- unsigned long doios_multi;
- unsigned long txlen;
- unsigned long tx_time;
- struct timespec send_stamp;
-};
-
-/**
- * Definition of one channel
- */
-struct channel {
-
- /**
- * Pointer to next channel in list.
- */
- struct channel *next;
- char id[CTC_ID_SIZE];
- struct ccw_device *cdev;
-
- /**
- * Type of this channel.
- * CTC/A or Escon for valid channels.
- */
- enum channel_types type;
-
- /**
- * Misc. flags. See CHANNEL_FLAGS_... below
- */
- __u32 flags;
-
- /**
- * The protocol of this channel
- */
- __u16 protocol;
-
- /**
- * I/O and irq related stuff
- */
- struct ccw1 *ccw;
- struct irb *irb;
-
- /**
- * RX/TX buffer size
- */
- int max_bufsize;
-
- /**
- * Transmit/Receive buffer.
- */
- struct sk_buff *trans_skb;
-
- /**
- * Universal I/O queue.
- */
- struct sk_buff_head io_queue;
-
- /**
- * TX queue for collecting skb's during busy.
- */
- struct sk_buff_head collect_queue;
-
- /**
- * Amount of data in collect_queue.
- */
- int collect_len;
-
- /**
- * spinlock for collect_queue and collect_len
- */
- spinlock_t collect_lock;
-
- /**
- * Timer for detecting unresposive
- * I/O operations.
- */
- fsm_timer timer;
-
- /**
- * Retry counter for misc. operations.
- */
- int retry;
-
- /**
- * The finite state machine of this channel
- */
- fsm_instance *fsm;
-
- /**
- * The corresponding net_device this channel
- * belongs to.
- */
- struct net_device *netdev;
-
- struct ctc_profile prof;
-
- unsigned char *trans_skb_data;
-
- __u16 logflags;
-};
-
-#define CHANNEL_FLAGS_READ 0
-#define CHANNEL_FLAGS_WRITE 1
-#define CHANNEL_FLAGS_INUSE 2
-#define CHANNEL_FLAGS_BUFSIZE_CHANGED 4
-#define CHANNEL_FLAGS_FAILED 8
-#define CHANNEL_FLAGS_WAITIRQ 16
-#define CHANNEL_FLAGS_RWMASK 1
-#define CHANNEL_DIRECTION(f) (f & CHANNEL_FLAGS_RWMASK)
-
-#define LOG_FLAG_ILLEGALPKT 1
-#define LOG_FLAG_ILLEGALSIZE 2
-#define LOG_FLAG_OVERRUN 4
-#define LOG_FLAG_NOMEM 8
-
-#define CTC_LOGLEVEL_INFO 1
-#define CTC_LOGLEVEL_NOTICE 2
-#define CTC_LOGLEVEL_WARN 4
-#define CTC_LOGLEVEL_EMERG 8
-#define CTC_LOGLEVEL_ERR 16
-#define CTC_LOGLEVEL_DEBUG 32
-#define CTC_LOGLEVEL_CRIT 64
-
-#define CTC_LOGLEVEL_DEFAULT \
-(CTC_LOGLEVEL_INFO | CTC_LOGLEVEL_NOTICE | CTC_LOGLEVEL_WARN | CTC_LOGLEVEL_CRIT)
-
-#define CTC_LOGLEVEL_MAX ((CTC_LOGLEVEL_CRIT<<1)-1)
-
-static int loglevel = CTC_LOGLEVEL_DEFAULT;
-
-#define ctc_pr_debug(fmt, arg...) \
-do { if (loglevel & CTC_LOGLEVEL_DEBUG) printk(KERN_DEBUG fmt,##arg); } while (0)
-
-#define ctc_pr_info(fmt, arg...) \
-do { if (loglevel & CTC_LOGLEVEL_INFO) printk(KERN_INFO fmt,##arg); } while (0)
-
-#define ctc_pr_notice(fmt, arg...) \
-do { if (loglevel & CTC_LOGLEVEL_NOTICE) printk(KERN_NOTICE fmt,##arg); } while (0)
-
-#define ctc_pr_warn(fmt, arg...) \
-do { if (loglevel & CTC_LOGLEVEL_WARN) printk(KERN_WARNING fmt,##arg); } while (0)
-
-#define ctc_pr_emerg(fmt, arg...) \
-do { if (loglevel & CTC_LOGLEVEL_EMERG) printk(KERN_EMERG fmt,##arg); } while (0)
-
-#define ctc_pr_err(fmt, arg...) \
-do { if (loglevel & CTC_LOGLEVEL_ERR) printk(KERN_ERR fmt,##arg); } while (0)
-
-#define ctc_pr_crit(fmt, arg...) \
-do { if (loglevel & CTC_LOGLEVEL_CRIT) printk(KERN_CRIT fmt,##arg); } while (0)
-
-/**
- * Linked list of all detected channels.
- */
-static struct channel *channels = NULL;
-
-struct ctc_priv {
- struct net_device_stats stats;
- unsigned long tbusy;
- /**
- * The finite state machine of this interface.
- */
- fsm_instance *fsm;
- /**
- * The protocol of this device
- */
- __u16 protocol;
- /**
- * Timer for restarting after I/O Errors
- */
- fsm_timer restart_timer;
-
- struct channel *channel[2];
-};
-
-/**
- * Definition of our link level header.
- */
-struct ll_header {
- __u16 length;
- __u16 type;
- __u16 unused;
-};
-#define LL_HEADER_LENGTH (sizeof(struct ll_header))
-
-/**
- * Compatibility macros for busy handling
- * of network devices.
- */
-static __inline__ void
-ctc_clear_busy(struct net_device * dev)
-{
- clear_bit(0, &(((struct ctc_priv *) dev->priv)->tbusy));
- if (((struct ctc_priv *)dev->priv)->protocol != CTC_PROTO_LINUX_TTY)
- netif_wake_queue(dev);
-}
-
-static __inline__ int
-ctc_test_and_set_busy(struct net_device * dev)
-{
- if (((struct ctc_priv *)dev->priv)->protocol != CTC_PROTO_LINUX_TTY)
- netif_stop_queue(dev);
- return test_and_set_bit(0, &((struct ctc_priv *) dev->priv)->tbusy);
-}
-
-/**
- * Print Banner.
- */
-static void
-print_banner(void)
-{
- static int printed = 0;
- char vbuf[] = "$Revision: 1.59 $";
- char *version = vbuf;
-
- if (printed)
- return;
- if ((version = strchr(version, ':'))) {
- char *p = strchr(version + 1, '$');
- if (p)
- *p = '\0';
- } else
- version = " ??? ";
- printk(KERN_INFO "CTC driver Version%s"
-#ifdef DEBUG
- " (DEBUG-VERSION, " __DATE__ __TIME__ ")"
-#endif
- " initialized\n", version);
- printed = 1;
-}
-\f
-/**
- * Return type of a detected device.
- */
-static enum channel_types
-get_channel_type(struct ccw_device_id *id)
-{
- enum channel_types type = (enum channel_types) id->driver_info;
-
- if (type == channel_type_ficon)
- type = channel_type_escon;
-
- return type;
-}
-\f
/**
* States of the interface statemachine.
*/
/**
* MUST be always the last element!!
*/
- NR_DEV_STATES
+ CTC_NR_DEV_STATES
};
static const char *dev_state_names[] = {
/**
* MUST be always the last element!!
*/
- NR_DEV_EVENTS
+ CTC_NR_DEV_EVENTS
};
static const char *dev_event_names[] = {
"TX down",
"Restart",
};
-\f
+
/**
* Events of the channel statemachine
*/
NR_CH_EVENTS,
};
-static const char *ch_event_names[] = {
- "ccw_device success",
- "ccw_device busy",
- "ccw_device enodev",
- "ccw_device ioerr",
- "ccw_device unknown",
-
- "Status ATTN & BUSY",
- "Status ATTN",
- "Status BUSY",
-
- "Unit check remote reset",
- "Unit check remote system reset",
- "Unit check TX timeout",
- "Unit check TX parity",
- "Unit check Hardware failure",
- "Unit check RX parity",
- "Unit check ZERO",
- "Unit check Unknown",
-
- "SubChannel check Unknown",
-
- "Machine check failure",
- "Machine check operational",
-
- "IRQ normal",
- "IRQ final",
-
- "Timer",
-
- "Start",
- "Stop",
-};
-
/**
* States of the channel statemachine.
*/
NR_CH_STATES,
};
+static int loglevel = CTC_LOGLEVEL_DEFAULT;
+
+/**
+ * Linked list of all detected channels.
+ */
+static struct channel *channels = NULL;
+
+/**
+ * Print Banner.
+ */
+static void
+print_banner(void)
+{
+ static int printed = 0;
+
+ if (printed)
+ return;
+
+ printk(KERN_INFO "CTC driver initialized\n");
+ printed = 1;
+}
+
+/**
+ * Return type of a detected device.
+ */
+static enum channel_types
+get_channel_type(struct ccw_device_id *id)
+{
+ enum channel_types type = (enum channel_types) id->driver_info;
+
+ if (type == channel_type_ficon)
+ type = channel_type_escon;
+
+ return type;
+}
+
+static const char *ch_event_names[] = {
+ "ccw_device success",
+ "ccw_device busy",
+ "ccw_device enodev",
+ "ccw_device ioerr",
+ "ccw_device unknown",
+
+ "Status ATTN & BUSY",
+ "Status ATTN",
+ "Status BUSY",
+
+ "Unit check remote reset",
+ "Unit check remote system reset",
+ "Unit check TX timeout",
+ "Unit check TX parity",
+ "Unit check Hardware failure",
+ "Unit check RX parity",
+ "Unit check ZERO",
+ "Unit check Unknown",
+
+ "SubChannel check Unknown",
+
+ "Machine check failure",
+ "Machine check operational",
+
+ "IRQ normal",
+ "IRQ final",
+
+ "Timer",
+
+ "Start",
+ "Stop",
+};
+
static const char *ch_state_names[] = {
"Idle",
"Stopped",
"Restarting",
"Not operational",
};
-\f
+
#ifdef DEBUG
/**
* Dump header and first 16 bytes of an sk_buff for debugging purposes.
{
struct net_device *dev = ch->netdev;
struct ctc_priv *privptr = (struct ctc_priv *) dev->priv;
-
__u16 len = *((__u16 *) pskb->data);
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
skb_put(pskb, 2 + LL_HEADER_LENGTH);
skb_pull(pskb, 2);
pskb->dev = dev;
skb->dev = pskb->dev;
skb->protocol = pskb->protocol;
pskb->ip_summed = CHECKSUM_UNNECESSARY;
- if (ch->protocol == CTC_PROTO_LINUX_TTY)
- ctc_tty_netif_rx(skb);
- else
- netif_rx(skb);
+ netif_rx_ni(skb);
/**
* Successful rx; reset logflags
*/
static void inline
ccw_check_return_code(struct channel *ch, int return_code, char *msg)
{
+ DBF_TEXT(trace, 5, __FUNCTION__);
switch (return_code) {
case 0:
fsm_event(ch->fsm, CH_EVENT_IO_SUCCESS, ch);
static void inline
ccw_unit_check(struct channel *ch, unsigned char sense)
{
+ DBF_TEXT(trace, 5, __FUNCTION__);
if (sense & SNS0_INTERVENTION_REQ) {
if (sense & 0x01) {
- if (ch->protocol != CTC_PROTO_LINUX_TTY)
- ctc_pr_debug("%s: Interface disc. or Sel. reset "
+ ctc_pr_debug("%s: Interface disc. or Sel. reset "
"(remote)\n", ch->id);
fsm_event(ch->fsm, CH_EVENT_UC_RCRESET, ch);
} else {
{
struct sk_buff *skb;
+ DBF_TEXT(trace, 5, __FUNCTION__);
+
while ((skb = skb_dequeue(q))) {
atomic_dec(&skb->users);
dev_kfree_skb_irq(skb);
static __inline__ int
ctc_checkalloc_buffer(struct channel *ch, int warn)
{
+ DBF_TEXT(trace, 5, __FUNCTION__);
if ((ch->trans_skb == NULL) ||
(ch->flags & CHANNEL_FLAGS_BUFSIZE_CHANGED)) {
if (ch->trans_skb != NULL)
fsm_action_nop(fsm_instance * fi, int event, void *arg)
{
}
-\f
+
/**
* Actions for channel - statemachines.
*****************************************************************************/
struct sk_buff *skb;
int first = 1;
int i;
-
+ unsigned long duration;
struct timespec done_stamp = xtime;
- unsigned long duration =
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
+
+ duration =
(done_stamp.tv_sec - ch->prof.send_stamp.tv_sec) * 1000000 +
(done_stamp.tv_nsec - ch->prof.send_stamp.tv_nsec) / 1000;
if (duration > ch->prof.tx_time)
{
struct channel *ch = (struct channel *) arg;
+ DBF_TEXT(trace, 4, __FUNCTION__);
fsm_deltimer(&ch->timer);
fsm_newstate(fi, CH_STATE_TXIDLE);
fsm_event(((struct ctc_priv *) ch->netdev->priv)->fsm, DEV_EVENT_TXUP,
int check_len;
int rc;
+ DBF_TEXT(trace, 4, __FUNCTION__);
fsm_deltimer(&ch->timer);
if (len < 8) {
ctc_pr_debug("%s: got packet with length %d < 8\n",
struct channel *ch = (struct channel *) arg;
int rc;
+ DBF_TEXT(trace, 4, __FUNCTION__);
+
if (fsm_getstate(fi) == CH_STATE_TXIDLE)
ctc_pr_debug("%s: remote side issued READ?, init ...\n", ch->id);
fsm_deltimer(&ch->timer);
__u16 buflen;
int rc;
+ DBF_TEXT(trace, 4, __FUNCTION__);
fsm_deltimer(&ch->timer);
buflen = *((__u16 *) ch->trans_skb->data);
#ifdef DEBUG
int rc;
unsigned long saveflags;
+ DBF_TEXT(trace, 4, __FUNCTION__);
fsm_deltimer(&ch->timer);
fsm_addtimer(&ch->timer, CTC_TIMEOUT_5SEC, CH_EVENT_TIMER, ch);
fsm_newstate(fi, CH_STATE_SETUPWAIT);
- if (event == CH_EVENT_TIMER)
+ saveflags = 0; /* avoids compiler warning with
+ spin_unlock_irqrestore */
+ if (event == CH_EVENT_TIMER) // only for timer not yet locked
spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
rc = ccw_device_start(ch->cdev, &ch->ccw[6], (unsigned long) ch, 0xff, 0);
if (event == CH_EVENT_TIMER)
int rc;
struct net_device *dev;
+ DBF_TEXT(trace, 4, __FUNCTION__);
if (ch == NULL) {
ctc_pr_warn("ch_action_start ch=NULL\n");
return;
int rc;
int oldstate;
+ DBF_TEXT(trace, 3, __FUNCTION__);
fsm_deltimer(&ch->timer);
fsm_addtimer(&ch->timer, CTC_TIMEOUT_5SEC, CH_EVENT_TIMER, ch);
- if (event == CH_EVENT_STOP)
+ saveflags = 0; /* avoids comp warning with
+ spin_unlock_irqrestore */
+ if (event == CH_EVENT_STOP) // only for STOP not yet locked
spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
oldstate = fsm_getstate(fi);
fsm_newstate(fi, CH_STATE_TERM);
struct channel *ch = (struct channel *) arg;
struct net_device *dev = ch->netdev;
+ DBF_TEXT(trace, 3, __FUNCTION__);
fsm_deltimer(&ch->timer);
fsm_newstate(fi, CH_STATE_STOPPED);
if (ch->trans_skb != NULL) {
struct channel *ch = (struct channel *) arg;
struct net_device *dev = ch->netdev;
+ DBF_TEXT(trace, 3, __FUNCTION__);
fsm_deltimer(&ch->timer);
fsm_newstate(fi, CH_STATE_NOTOP);
if (CHANNEL_DIRECTION(ch->flags) == READ) {
struct channel *ch = (struct channel *) arg;
struct net_device *dev = ch->netdev;
+ DBF_TEXT(setup, 3, __FUNCTION__);
/**
* Special case: Got UC_RCRESET on setmode.
* This means that remote side isn't setup. In this case
struct channel *ch = (struct channel *) arg;
struct net_device *dev = ch->netdev;
+ DBF_TEXT(trace, 3, __FUNCTION__);
fsm_deltimer(&ch->timer);
ctc_pr_debug("%s: %s channel restart\n", dev->name,
(CHANNEL_DIRECTION(ch->flags) == READ) ? "RX" : "TX");
fsm_addtimer(&ch->timer, CTC_TIMEOUT_5SEC, CH_EVENT_TIMER, ch);
oldstate = fsm_getstate(fi);
fsm_newstate(fi, CH_STATE_STARTWAIT);
- if (event == CH_EVENT_TIMER)
+ saveflags = 0; /* avoids compiler warning with
+ spin_unlock_irqrestore */
+ if (event == CH_EVENT_TIMER) // only for timer not yet locked
spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
rc = ccw_device_halt(ch->cdev, (unsigned long) ch);
if (event == CH_EVENT_TIMER)
struct channel *ch = (struct channel *) arg;
struct net_device *dev = ch->netdev;
+ DBF_TEXT(setup, 3, __FUNCTION__);
if (event == CH_EVENT_TIMER) {
fsm_deltimer(&ch->timer);
ctc_pr_debug("%s: Timeout during RX init handshake\n", dev->name);
struct channel *ch = (struct channel *) arg;
struct net_device *dev = ch->netdev;
+ DBF_TEXT(setup, 3, __FUNCTION__);
fsm_newstate(fi, CH_STATE_RXERR);
ctc_pr_warn("%s: RX initialization failed\n", dev->name);
ctc_pr_warn("%s: RX <-> RX connection detected\n", dev->name);
struct channel *ch2;
struct net_device *dev = ch->netdev;
+ DBF_TEXT(trace, 3, __FUNCTION__);
fsm_deltimer(&ch->timer);
ctc_pr_debug("%s: Got remote disconnect, re-initializing ...\n",
dev->name);
struct channel *ch = (struct channel *) arg;
struct net_device *dev = ch->netdev;
+ DBF_TEXT(setup, 2, __FUNCTION__);
if (event == CH_EVENT_TIMER) {
fsm_deltimer(&ch->timer);
ctc_pr_debug("%s: Timeout during TX init handshake\n", dev->name);
struct net_device *dev = ch->netdev;
unsigned long saveflags;
+ DBF_TEXT(trace, 4, __FUNCTION__);
fsm_deltimer(&ch->timer);
if (ch->retry++ > 3) {
ctc_pr_debug("%s: TX retry failed, restarting channel\n",
return;
}
fsm_addtimer(&ch->timer, 1000, CH_EVENT_TIMER, ch);
- if (event == CH_EVENT_TIMER)
+ saveflags = 0; /* avoids compiler warning with
+ spin_unlock_irqrestore */
+ if (event == CH_EVENT_TIMER) // only for TIMER not yet locked
spin_lock_irqsave(get_ccwdev_lock(ch->cdev),
saveflags);
rc = ccw_device_start(ch->cdev, &ch->ccw[3],
struct channel *ch = (struct channel *) arg;
struct net_device *dev = ch->netdev;
+ DBF_TEXT(trace, 3, __FUNCTION__);
fsm_deltimer(&ch->timer);
if (CHANNEL_DIRECTION(ch->flags) == READ) {
ctc_pr_debug("%s: RX I/O error\n", dev->name);
}
}
-static void
+static void
ch_action_reinit(fsm_instance *fi, int event, void *arg)
{
struct channel *ch = (struct channel *)arg;
struct net_device *dev = ch->netdev;
struct ctc_priv *privptr = dev->priv;
-
+
+ DBF_TEXT(trace, 4, __FUNCTION__);
ch_action_iofatal(fi, event, arg);
fsm_addtimer(&privptr->restart_timer, 1000, DEV_EVENT_RESTART, dev);
}
-\f
/**
* The statemachine for a channel.
*/
};
static const int CH_FSM_LEN = sizeof (ch_fsm) / sizeof (fsm_node);
-\f
+
/**
* Functions related to setup and device detection.
*****************************************************************************/
}
dev1 = simple_strtoul(id1, &id1, 16);
dev2 = simple_strtoul(id2, &id2, 16);
-
+
return (dev1 < dev2);
}
struct channel **c = &channels;
struct channel *ch;
+ DBF_TEXT(trace, 2, __FUNCTION__);
if ((ch =
(struct channel *) kmalloc(sizeof (struct channel),
GFP_KERNEL)) == NULL) {
return -1;
}
memset(ch, 0, sizeof (struct channel));
- if ((ch->ccw = (struct ccw1 *) kmalloc(sizeof (struct ccw1) * 8,
+ if ((ch->ccw = kmalloc(8*sizeof(struct ccw1),
GFP_KERNEL | GFP_DMA)) == NULL) {
kfree(ch);
ctc_pr_warn("ctc: Out of memory in add_channel\n");
return -1;
}
+ memset(ch->ccw, 0, 8*sizeof(struct ccw1)); // assure all flags and counters are reset
+
/**
* "static" ccws are used in the following way:
*
* 4: write (idal allocated on every write).
* 5: nop
* ccw[6..7] (Channel program for initial channel setup):
- * 3: set extended mode
- * 4: nop
+ * 6: set extended mode
+ * 7: nop
*
* ch->ccw[0..5] are initialized in ch_action_start because
* the channel's direction is yet unknown here.
*/
ch->ccw[6].cmd_code = CCW_CMD_SET_EXTENDED;
ch->ccw[6].flags = CCW_FLAG_SLI;
- ch->ccw[6].count = 0;
- ch->ccw[6].cda = 0;
ch->ccw[7].cmd_code = CCW_CMD_NOOP;
ch->ccw[7].flags = CCW_FLAG_SLI;
- ch->ccw[7].count = 0;
- ch->ccw[7].cda = 0;
ch->cdev = cdev;
snprintf(ch->id, CTC_ID_SIZE, "ch-%s", cdev->dev.bus_id);
ch->type = type;
- loglevel = CTC_LOGLEVEL_DEFAULT;
ch->fsm = init_fsm(ch->id, ch_state_names,
ch_event_names, NR_CH_STATES, NR_CH_EVENTS,
ch_fsm, CH_FSM_LEN, GFP_KERNEL);
if (ch->fsm == NULL) {
ctc_pr_warn("ctc: Could not create FSM in add_channel\n");
+ kfree(ch->ccw);
kfree(ch);
return -1;
}
fsm_newstate(ch->fsm, CH_STATE_IDLE);
- if ((ch->irb = (struct irb *) kmalloc(sizeof (struct irb),
+ if ((ch->irb = kmalloc(sizeof (struct irb),
GFP_KERNEL)) == NULL) {
ctc_pr_warn("ctc: Out of memory in add_channel\n");
kfree_fsm(ch->fsm);
+ kfree(ch->ccw);
kfree(ch);
return -1;
}
memset(ch->irb, 0, sizeof (struct irb));
while (*c && less_than((*c)->id, ch->id))
c = &(*c)->next;
- if (!strncmp((*c)->id, ch->id, CTC_ID_SIZE)) {
+ if (*c && (!strncmp((*c)->id, ch->id, CTC_ID_SIZE))) {
ctc_pr_debug(
"ctc: add_channel: device %s already in list, "
"using old entry\n", (*c)->id);
kfree(ch->irb);
kfree_fsm(ch->fsm);
+ kfree(ch->ccw);
kfree(ch);
return 0;
}
+
+ spin_lock_init(&ch->collect_lock);
+
fsm_settimer(ch->fsm, &ch->timer);
skb_queue_head_init(&ch->io_queue);
skb_queue_head_init(&ch->collect_queue);
{
struct channel **c = &channels;
+ DBF_TEXT(trace, 2, __FUNCTION__);
if (ch == NULL)
return;
dev_kfree_skb(ch->trans_skb);
}
kfree(ch->ccw);
+ kfree(ch->irb);
+ kfree(ch);
return;
}
c = &((*c)->next);
{
struct channel *ch = channels;
+ DBF_TEXT(trace, 3, __FUNCTION__);
#ifdef DEBUG
ctc_pr_debug("ctc: %s(): searching for ch with id %s and type %d\n",
__func__, id, type);
struct net_device *dev;
struct ctc_priv *priv;
+ DBF_TEXT(trace, 5, __FUNCTION__);
if (__ctc_check_irb_error(cdev, irb))
return;
irb->scsw.dstat);
return;
}
-
+
priv = ((struct ccwgroup_device *)cdev->dev.driver_data)
->dev.driver_data;
"device %s\n", cdev->dev.bus_id);
return;
}
-
+
dev = (struct net_device *) (ch->netdev);
if (dev == NULL) {
ctc_pr_crit("ctc: ctc_irq_handler dev=NULL bus_id=%s, ch=0x%p\n",
fsm_event(ch->fsm, CH_EVENT_IRQ, ch);
}
-\f
+
/**
* Actions for interface - statemachine.
*****************************************************************************/
struct ctc_priv *privptr = dev->priv;
int direction;
+ DBF_TEXT(setup, 3, __FUNCTION__);
fsm_deltimer(&privptr->restart_timer);
fsm_newstate(fi, DEV_STATE_STARTWAIT_RXTX);
for (direction = READ; direction <= WRITE; direction++) {
struct ctc_priv *privptr = dev->priv;
int direction;
+ DBF_TEXT(trace, 3, __FUNCTION__);
fsm_newstate(fi, DEV_STATE_STOPWAIT_RXTX);
for (direction = READ; direction <= WRITE; direction++) {
struct channel *ch = privptr->channel[direction];
fsm_event(ch->fsm, CH_EVENT_STOP, ch);
}
}
-static void
+static void
dev_action_restart(fsm_instance *fi, int event, void *arg)
{
struct net_device *dev = (struct net_device *)arg;
struct ctc_priv *privptr = dev->priv;
-
+
+ DBF_TEXT(trace, 3, __FUNCTION__);
ctc_pr_debug("%s: Restarting\n", dev->name);
dev_action_stop(fi, event, arg);
fsm_event(privptr->fsm, DEV_EVENT_STOP, dev);
dev_action_chup(fsm_instance * fi, int event, void *arg)
{
struct net_device *dev = (struct net_device *) arg;
- struct ctc_priv *privptr = dev->priv;
+ DBF_TEXT(trace, 3, __FUNCTION__);
switch (fsm_getstate(fi)) {
case DEV_STATE_STARTWAIT_RXTX:
if (event == DEV_EVENT_RXUP)
fsm_newstate(fi, DEV_STATE_RUNNING);
ctc_pr_info("%s: connected with remote side\n",
dev->name);
- if (privptr->protocol == CTC_PROTO_LINUX_TTY)
- ctc_tty_setcarrier(dev, 1);
ctc_clear_busy(dev);
}
break;
fsm_newstate(fi, DEV_STATE_RUNNING);
ctc_pr_info("%s: connected with remote side\n",
dev->name);
- if (privptr->protocol == CTC_PROTO_LINUX_TTY)
- ctc_tty_setcarrier(dev, 1);
ctc_clear_busy(dev);
}
break;
static void
dev_action_chdown(fsm_instance * fi, int event, void *arg)
{
- struct net_device *dev = (struct net_device *) arg;
- struct ctc_priv *privptr = dev->priv;
+ DBF_TEXT(trace, 3, __FUNCTION__);
switch (fsm_getstate(fi)) {
case DEV_STATE_RUNNING:
- if (privptr->protocol == CTC_PROTO_LINUX_TTY)
- ctc_tty_setcarrier(dev, 0);
if (event == DEV_EVENT_TXDOWN)
fsm_newstate(fi, DEV_STATE_STARTWAIT_TX);
else
struct ll_header header;
int rc = 0;
+ DBF_TEXT(trace, 5, __FUNCTION__);
+ /* we need to acquire the lock for testing the state
+ * otherwise we can have an IRQ changing the state to
+ * TXIDLE after the test but before acquiring the lock.
+ */
+ spin_lock_irqsave(&ch->collect_lock, saveflags);
if (fsm_getstate(ch->fsm) != CH_STATE_TXIDLE) {
int l = skb->len + LL_HEADER_LENGTH;
- spin_lock_irqsave(&ch->collect_lock, saveflags);
- if (ch->collect_len + l > ch->max_bufsize - 2)
- rc = -EBUSY;
- else {
+ if (ch->collect_len + l > ch->max_bufsize - 2) {
+ spin_unlock_irqrestore(&ch->collect_lock, saveflags);
+ return -EBUSY;
+ } else {
atomic_inc(&skb->users);
header.length = l;
header.type = skb->protocol;
int ccw_idx;
struct sk_buff *nskb;
unsigned long hi;
-
+ spin_unlock_irqrestore(&ch->collect_lock, saveflags);
/**
* Protect skb against beeing free'd by upper
* layers.
if (!nskb) {
atomic_dec(&skb->users);
skb_pull(skb, LL_HEADER_LENGTH + 2);
+ ctc_clear_busy(ch->netdev);
return -ENOMEM;
} else {
memcpy(skb_put(nskb, skb->len),
*/
atomic_dec(&skb->users);
skb_pull(skb, LL_HEADER_LENGTH + 2);
+ ctc_clear_busy(ch->netdev);
return -EBUSY;
}
}
}
+ ctc_clear_busy(ch->netdev);
return rc;
}
-\f
+
/**
* Interface API for upper network layers
*****************************************************************************/
static int
ctc_open(struct net_device * dev)
{
+ DBF_TEXT(trace, 5, __FUNCTION__);
fsm_event(((struct ctc_priv *) dev->priv)->fsm, DEV_EVENT_START, dev);
return 0;
}
static int
ctc_close(struct net_device * dev)
{
+ DBF_TEXT(trace, 5, __FUNCTION__);
fsm_event(((struct ctc_priv *) dev->priv)->fsm, DEV_EVENT_STOP, dev);
return 0;
}
int rc = 0;
struct ctc_priv *privptr = (struct ctc_priv *) dev->priv;
+ DBF_TEXT(trace, 5, __FUNCTION__);
/**
* Some sanity checks ...
*/
/**
* If channels are not running, try to restart them
- * and throw away packet.
+ * and throw away packet.
*/
if (fsm_getstate(privptr->fsm) != DEV_STATE_RUNNING) {
fsm_event(privptr->fsm, DEV_EVENT_START, dev);
- if (privptr->protocol == CTC_PROTO_LINUX_TTY)
- return -EBUSY;
dev_kfree_skb(skb);
privptr->stats.tx_dropped++;
privptr->stats.tx_errors++;
dev->trans_start = jiffies;
if (transmit_skb(privptr->channel[WRITE], skb) != 0)
rc = 1;
- ctc_clear_busy(dev);
return rc;
}
{
struct ctc_priv *privptr = (struct ctc_priv *) dev->priv;
+ DBF_TEXT(trace, 3, __FUNCTION__);
if ((new_mtu < 576) || (new_mtu > 65527) ||
(new_mtu > (privptr->channel[READ]->max_bufsize -
LL_HEADER_LENGTH - 2)))
/*
* sysfs attributes
*/
+
static ssize_t
-buffer_show(struct device *dev, char *buf)
+buffer_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct ctc_priv *priv;
if (!priv)
return -ENODEV;
return sprintf(buf, "%d\n",
- priv->channel[READ]->max_bufsize);
+ priv->buffer_size);
}
static ssize_t
-buffer_write(struct device *dev, const char *buf, size_t count)
+buffer_write(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct ctc_priv *priv;
struct net_device *ndev;
int bs1;
+ char buffer[16];
+ DBF_TEXT(trace, 3, __FUNCTION__);
+ DBF_TEXT(trace, 3, buf);
priv = dev->driver_data;
- if (!priv)
+ if (!priv) {
+ DBF_TEXT(trace, 3, "bfnopriv");
return -ENODEV;
+ }
+
+ sscanf(buf, "%u", &bs1);
+ if (bs1 > CTC_BUFSIZE_LIMIT)
+ goto einval;
+ if (bs1 < (576 + LL_HEADER_LENGTH + 2))
+ goto einval;
+ priv->buffer_size = bs1; // just to overwrite the default
+
ndev = priv->channel[READ]->netdev;
- if (!ndev)
+ if (!ndev) {
+ DBF_TEXT(trace, 3, "bfnondev");
return -ENODEV;
- sscanf(buf, "%u", &bs1);
+ }
- if (bs1 > CTC_BUFSIZE_LIMIT)
- return -EINVAL;
if ((ndev->flags & IFF_RUNNING) &&
(bs1 < (ndev->mtu + LL_HEADER_LENGTH + 2)))
- return -EINVAL;
- if (bs1 < (576 + LL_HEADER_LENGTH + 2))
- return -EINVAL;
+ goto einval;
- priv->channel[READ]->max_bufsize =
- priv->channel[WRITE]->max_bufsize = bs1;
+ priv->channel[READ]->max_bufsize = bs1;
+ priv->channel[WRITE]->max_bufsize = bs1;
if (!(ndev->flags & IFF_RUNNING))
ndev->mtu = bs1 - LL_HEADER_LENGTH - 2;
priv->channel[READ]->flags |= CHANNEL_FLAGS_BUFSIZE_CHANGED;
priv->channel[WRITE]->flags |= CHANNEL_FLAGS_BUFSIZE_CHANGED;
+ sprintf(buffer, "%d",priv->buffer_size);
+ DBF_TEXT(trace, 3, buffer);
return count;
+einval:
+ DBF_TEXT(trace, 3, "buff_err");
+ return -EINVAL;
}
static ssize_t
-loglevel_show(struct device *dev, char *buf)
+loglevel_show(struct device *dev, struct device_attribute *attr, char *buf)
{
- struct ctc_priv *priv;
-
- priv = dev->driver_data;
- if (!priv)
- return -ENODEV;
return sprintf(buf, "%d\n", loglevel);
}
static ssize_t
-loglevel_write(struct device *dev, const char *buf, size_t count)
+loglevel_write(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
- struct ctc_priv *priv;
int ll1;
- priv = dev->driver_data;
- if (!priv)
- return -ENODEV;
+ DBF_TEXT(trace, 5, __FUNCTION__);
sscanf(buf, "%i", &ll1);
if ((ll1 > CTC_LOGLEVEL_MAX) || (ll1 < 0))
char *sbuf;
char *p;
+ DBF_TEXT(trace, 4, __FUNCTION__);
if (!priv)
return;
- sbuf = (char *)kmalloc(2048, GFP_KERNEL);
+ sbuf = kmalloc(2048, GFP_KERNEL);
if (sbuf == NULL)
return;
p = sbuf;
}
static ssize_t
-stats_show(struct device *dev, char *buf)
+stats_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct ctc_priv *priv = dev->driver_data;
if (!priv)
}
static ssize_t
-stats_write(struct device *dev, const char *buf, size_t count)
+stats_write(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct ctc_priv *priv = dev->driver_data;
if (!priv)
return count;
}
-static DEVICE_ATTR(buffer, 0644, buffer_show, buffer_write);
-static DEVICE_ATTR(loglevel, 0644, loglevel_show, loglevel_write);
-static DEVICE_ATTR(stats, 0644, stats_show, stats_write);
-
-static int
-ctc_add_attributes(struct device *dev)
-{
- device_create_file(dev, &dev_attr_buffer);
- device_create_file(dev, &dev_attr_loglevel);
- device_create_file(dev, &dev_attr_stats);
- return 0;
-}
-
-static void
-ctc_remove_attributes(struct device *dev)
-{
- device_remove_file(dev, &dev_attr_stats);
- device_remove_file(dev, &dev_attr_loglevel);
- device_remove_file(dev, &dev_attr_buffer);
-}
-
-\f
static void
ctc_netdev_unregister(struct net_device * dev)
{
if (!dev)
return;
privptr = (struct ctc_priv *) dev->priv;
- if (privptr->protocol != CTC_PROTO_LINUX_TTY)
- unregister_netdev(dev);
- else
- ctc_tty_unregister_netdev(dev);
+ unregister_netdev(dev);
}
static int
ctc_netdev_register(struct net_device * dev)
{
- struct ctc_priv *privptr = (struct ctc_priv *) dev->priv;
- if (privptr->protocol != CTC_PROTO_LINUX_TTY)
- return register_netdev(dev);
- else
- return ctc_tty_register_netdev(dev);
+ return register_netdev(dev);
}
static void
#endif
}
-/**
- * Initialize everything of the net device except the name and the
- * channel structs.
- */
-static struct net_device *
-ctc_init_netdevice(struct net_device * dev, int alloc_device,
- struct ctc_priv *privptr)
-{
- if (!privptr)
- return NULL;
-
- if (alloc_device) {
- dev = kmalloc(sizeof (struct net_device), GFP_KERNEL);
- if (!dev)
- return NULL;
- memset(dev, 0, sizeof (struct net_device));
- }
-
- dev->priv = privptr;
- privptr->fsm = init_fsm("ctcdev", dev_state_names,
- dev_event_names, NR_DEV_STATES, NR_DEV_EVENTS,
- dev_fsm, DEV_FSM_LEN, GFP_KERNEL);
- if (privptr->fsm == NULL) {
- if (alloc_device)
- kfree(dev);
- return NULL;
- }
- fsm_newstate(privptr->fsm, DEV_STATE_STOPPED);
- fsm_settimer(privptr->fsm, &privptr->restart_timer);
- dev->mtu = CTC_BUFSIZE_DEFAULT - LL_HEADER_LENGTH - 2;
- dev->hard_start_xmit = ctc_tx;
- dev->open = ctc_open;
- dev->stop = ctc_close;
- dev->get_stats = ctc_stats;
- dev->change_mtu = ctc_change_mtu;
- dev->hard_header_len = LL_HEADER_LENGTH + 2;
- dev->addr_len = 0;
- dev->type = ARPHRD_SLIP;
- dev->tx_queue_len = 100;
- dev->flags = IFF_POINTOPOINT | IFF_NOARP;
- SET_MODULE_OWNER(dev);
- return dev;
-}
-
static ssize_t
-ctc_proto_show(struct device *dev, char *buf)
+ctc_proto_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct ctc_priv *priv;
}
static ssize_t
-ctc_proto_store(struct device *dev, const char *buf, size_t count)
+ctc_proto_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct ctc_priv *priv;
int value;
+ DBF_TEXT(trace, 3, __FUNCTION__);
pr_debug("%s() called\n", __FUNCTION__);
priv = dev->driver_data;
if (!priv)
return -ENODEV;
sscanf(buf, "%u", &value);
- if ((value < 0) || (value > CTC_PROTO_MAX))
+ if (!((value == CTC_PROTO_S390) ||
+ (value == CTC_PROTO_LINUX) ||
+ (value == CTC_PROTO_OS390)))
return -EINVAL;
priv->protocol = value;
return count;
}
-static DEVICE_ATTR(protocol, 0644, ctc_proto_show, ctc_proto_store);
-
static ssize_t
-ctc_type_show(struct device *dev, char *buf)
+ctc_type_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct ccwgroup_device *cgdev;
return sprintf(buf, "%s\n", cu3088_type[cgdev->cdev[0]->id.driver_info]);
}
+static DEVICE_ATTR(buffer, 0644, buffer_show, buffer_write);
+static DEVICE_ATTR(protocol, 0644, ctc_proto_show, ctc_proto_store);
static DEVICE_ATTR(type, 0444, ctc_type_show, NULL);
+static DEVICE_ATTR(loglevel, 0644, loglevel_show, loglevel_write);
+static DEVICE_ATTR(stats, 0644, stats_show, stats_write);
+
static struct attribute *ctc_attr[] = {
&dev_attr_protocol.attr,
&dev_attr_type.attr,
+ &dev_attr_buffer.attr,
NULL,
};
.attrs = ctc_attr,
};
+static int
+ctc_add_attributes(struct device *dev)
+{
+ int rc;
+
+ rc = device_create_file(dev, &dev_attr_loglevel);
+ if (rc)
+ goto out;
+ rc = device_create_file(dev, &dev_attr_stats);
+ if (!rc)
+ goto out;
+ device_remove_file(dev, &dev_attr_loglevel);
+out:
+ return rc;
+}
+
+static void
+ctc_remove_attributes(struct device *dev)
+{
+ device_remove_file(dev, &dev_attr_stats);
+ device_remove_file(dev, &dev_attr_loglevel);
+}
+
static int
ctc_add_files(struct device *dev)
{
/**
* Add ctc specific attributes.
* Add ctc private data.
- *
+ *
* @param cgdev pointer to ccwgroup_device just added
*
* @returns 0 on success, !0 on failure.
*/
-
static int
ctc_probe_device(struct ccwgroup_device *cgdev)
{
struct ctc_priv *priv;
int rc;
+ char buffer[16];
pr_debug("%s() called\n", __FUNCTION__);
+ DBF_TEXT(setup, 3, __FUNCTION__);
if (!get_device(&cgdev->dev))
return -ENODEV;
put_device(&cgdev->dev);
return rc;
}
-
+ priv->buffer_size = CTC_BUFSIZE_DEFAULT;
cgdev->cdev[0]->handler = ctc_irq_handler;
cgdev->cdev[1]->handler = ctc_irq_handler;
cgdev->dev.driver_data = priv;
+ sprintf(buffer, "%p", priv);
+ DBF_TEXT(data, 3, buffer);
+
+ sprintf(buffer, "%u", (unsigned int)sizeof(struct ctc_priv));
+ DBF_TEXT(data, 3, buffer);
+
+ sprintf(buffer, "%p", &channels);
+ DBF_TEXT(data, 3, buffer);
+
+ sprintf(buffer, "%u", (unsigned int)sizeof(struct channel));
+ DBF_TEXT(data, 3, buffer);
+
return 0;
}
+/**
+ * Initialize everything of the net device except the name and the
+ * channel structs.
+ */
+static struct net_device *
+ctc_init_netdevice(struct net_device * dev, int alloc_device,
+ struct ctc_priv *privptr)
+{
+ if (!privptr)
+ return NULL;
+
+ DBF_TEXT(setup, 3, __FUNCTION__);
+
+ if (alloc_device) {
+ dev = kmalloc(sizeof (struct net_device), GFP_KERNEL);
+ if (!dev)
+ return NULL;
+ memset(dev, 0, sizeof (struct net_device));
+ }
+
+ dev->priv = privptr;
+ privptr->fsm = init_fsm("ctcdev", dev_state_names,
+ dev_event_names, CTC_NR_DEV_STATES, CTC_NR_DEV_EVENTS,
+ dev_fsm, DEV_FSM_LEN, GFP_KERNEL);
+ if (privptr->fsm == NULL) {
+ if (alloc_device)
+ kfree(dev);
+ return NULL;
+ }
+ fsm_newstate(privptr->fsm, DEV_STATE_STOPPED);
+ fsm_settimer(privptr->fsm, &privptr->restart_timer);
+ if (dev->mtu == 0)
+ dev->mtu = CTC_BUFSIZE_DEFAULT - LL_HEADER_LENGTH - 2;
+ dev->hard_start_xmit = ctc_tx;
+ dev->open = ctc_open;
+ dev->stop = ctc_close;
+ dev->get_stats = ctc_stats;
+ dev->change_mtu = ctc_change_mtu;
+ dev->hard_header_len = LL_HEADER_LENGTH + 2;
+ dev->addr_len = 0;
+ dev->type = ARPHRD_SLIP;
+ dev->tx_queue_len = 100;
+ dev->flags = IFF_POINTOPOINT | IFF_NOARP;
+ SET_MODULE_OWNER(dev);
+ return dev;
+}
+
+
/**
*
* Setup an interface.
struct ctc_priv *privptr;
struct net_device *dev;
int ret;
+ char buffer[16];
pr_debug("%s() called\n", __FUNCTION__);
+ DBF_TEXT(setup, 3, __FUNCTION__);
privptr = cgdev->dev.driver_data;
if (!privptr)
return -ENODEV;
+ sprintf(buffer, "%d", privptr->buffer_size);
+ DBF_TEXT(setup, 3, buffer);
+
type = get_channel_type(&cgdev->cdev[0]->id);
-
+
snprintf(read_id, CTC_ID_SIZE, "ch-%s", cgdev->cdev[0]->dev.bus_id);
snprintf(write_id, CTC_ID_SIZE, "ch-%s", cgdev->cdev[1]->dev.bus_id);
goto out;
}
- if (privptr->protocol == CTC_PROTO_LINUX_TTY)
- snprintf(dev->name, 8, "ctctty%%d");
- else
- snprintf(dev->name, 8, "ctc%%d");
+ strlcpy(dev->name, "ctc%d", IFNAMSIZ);
for (direction = READ; direction <= WRITE; direction++) {
privptr->channel[direction] =
channel_get(type, direction == READ ? read_id : write_id,
direction);
if (privptr->channel[direction] == NULL) {
- if (direction == WRITE)
+ if (direction == WRITE)
channel_free(privptr->channel[READ]);
ctc_free_netdevice(dev, 1);
}
privptr->channel[direction]->netdev = dev;
privptr->channel[direction]->protocol = privptr->protocol;
- privptr->channel[direction]->max_bufsize = CTC_BUFSIZE_DEFAULT;
+ privptr->channel[direction]->max_bufsize = privptr->buffer_size;
}
/* sysfs magic */
SET_NETDEV_DEV(dev, &cgdev->dev);
goto out;
}
- ctc_add_attributes(&cgdev->dev);
+ if (ctc_add_attributes(&cgdev->dev)) {
+ ctc_netdev_unregister(dev);
+ dev->priv = NULL;
+ ctc_free_netdevice(dev, 1);
+ goto out;
+ }
strlcpy(privptr->fsm->name, dev->name, sizeof (privptr->fsm->name));
{
struct ctc_priv *priv;
struct net_device *ndev;
-
+ DBF_TEXT(setup, 3, __FUNCTION__);
pr_debug("%s() called\n", __FUNCTION__);
+
priv = cgdev->dev.driver_data;
ndev = NULL;
if (!priv)
channel_remove(priv->channel[READ]);
if (priv->channel[WRITE])
channel_remove(priv->channel[WRITE]);
-
priv->channel[READ] = priv->channel[WRITE] = NULL;
return 0;
struct ctc_priv *priv;
pr_debug("%s() called\n", __FUNCTION__);
+ DBF_TEXT(setup, 3, __FUNCTION__);
priv = cgdev->dev.driver_data;
if (!priv)
static void __exit
ctc_exit(void)
{
+ DBF_TEXT(setup, 3, __FUNCTION__);
unregister_cu3088_discipline(&ctc_group_driver);
- ctc_tty_cleanup();
+ ctc_unregister_dbf_views();
ctc_pr_info("CTC driver unloaded\n");
}
{
int ret = 0;
+ loglevel = CTC_LOGLEVEL_DEFAULT;
+
+ DBF_TEXT(setup, 3, __FUNCTION__);
+
print_banner();
- ctc_tty_init();
+ ret = ctc_register_dbf_views();
+ if (ret){
+ ctc_pr_crit("ctc_init failed with ctc_register_dbf_views rc = %d\n", ret);
+ return ret;
+ }
ret = register_cu3088_discipline(&ctc_group_driver);
- if (ret)
- ctc_tty_cleanup();
+ if (ret) {
+ ctc_unregister_dbf_views();
+ }
return ret;
}
git://git.onelab.eu / linux-2.6.git / blobdiff