-
-/**
- * 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: 1.68 $";
- char *version = vbuf;
-
- if (printed)
- return;
- if ((version = strchr(version, ':'))) {
- char *p = strchr(version + 1, '$');
- 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