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linux-next/drivers/s390/net/ctcm_main.h
Heiko Carstens a53c8fab3f s390/comments: unify copyright messages and remove file names 
Remove the file name from the comment at top of many files. In most
cases the file name was wrong anyway, so it's rather pointless.

Also unify the IBM copyright statement. We did have a lot of sightly
different statements and wanted to change them one after another
whenever a file gets touched. However that never happened. Instead
people start to take the old/"wrong" statements to use as a template
for new files.
So unify all of them in one go.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2012-07-20 11:15:04 +02:00

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/*
* Copyright IBM Corp. 2001, 2007
* Authors: Fritz Elfert (felfert@millenux.com)
* Peter Tiedemann (ptiedem@de.ibm.com)
*/
#ifndef _CTCM_MAIN_H_
#define _CTCM_MAIN_H_
#include <asm/ccwdev.h>
#include <asm/ccwgroup.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include "fsm.h"
#include "ctcm_dbug.h"
#include "ctcm_mpc.h"
#define CTC_DRIVER_NAME "ctcm"
#define CTC_DEVICE_NAME "ctc"
#define MPC_DEVICE_NAME "mpc"
#define CTC_DEVICE_GENE CTC_DEVICE_NAME "%d"
#define MPC_DEVICE_GENE MPC_DEVICE_NAME "%d"
#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 ctcm_pr_debug(fmt, arg...) printk(KERN_DEBUG fmt, ##arg)
#define CTCM_PR_DEBUG(fmt, arg...) \
do { \
if (do_debug) \
printk(KERN_DEBUG fmt, ##arg); \
} while (0)
#define CTCM_PR_DBGDATA(fmt, arg...) \
do { \
if (do_debug_data) \
printk(KERN_DEBUG fmt, ##arg); \
} while (0)
#define CTCM_D3_DUMP(buf, len) \
do { \
if (do_debug_data) \
ctcmpc_dumpit(buf, len); \
} while (0)
#define CTCM_CCW_DUMP(buf, len) \
do { \
if (do_debug_ccw) \
ctcmpc_dumpit(buf, len); \
} while (0)
/**
* Enum for classifying detected devices
*/
enum ctcm_channel_types {
/* Device is not a channel */
ctcm_channel_type_none,
/* Device is a CTC/A */
ctcm_channel_type_parallel,
/* Device is a FICON channel */
ctcm_channel_type_ficon,
/* Device is a ESCON channel */
ctcm_channel_type_escon
};
/*
* CCW commands, used in this driver.
*/
#define CCW_CMD_WRITE 0x01
#define CCW_CMD_READ 0x02
#define CCW_CMD_NOOP 0x03
#define CCW_CMD_TIC 0x08
#define CCW_CMD_SENSE_CMD 0x14
#define CCW_CMD_WRITE_CTL 0x17
#define CCW_CMD_SET_EXTENDED 0xc3
#define CCW_CMD_PREPARE 0xe3
#define CTCM_PROTO_S390 0
#define CTCM_PROTO_LINUX 1
#define CTCM_PROTO_LINUX_TTY 2
#define CTCM_PROTO_OS390 3
#define CTCM_PROTO_MPC 4
#define CTCM_PROTO_MAX 4
#define CTCM_BUFSIZE_LIMIT 65535
#define CTCM_BUFSIZE_DEFAULT 32768
#define MPC_BUFSIZE_DEFAULT CTCM_BUFSIZE_LIMIT
#define CTCM_TIME_1_SEC 1000
#define CTCM_TIME_5_SEC 5000
#define CTCM_TIME_10_SEC 10000
#define CTCM_INITIAL_BLOCKLEN 2
#define CTCM_READ 0
#define CTCM_WRITE 1
#define CTCM_ID_SIZE 20+3
struct ctcm_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 {
struct channel *next;
char id[CTCM_ID_SIZE];
struct ccw_device *cdev;
/*
* Type of this channel.
* CTC/A or Escon for valid channels.
*/
enum ctcm_channel_types type;
/*
* Misc. flags. See CHANNEL_FLAGS_... below
*/
__u32 flags;
__u16 protocol; /* protocol of this channel (4 = MPC) */
/*
* I/O and irq related stuff
*/
struct ccw1 *ccw;
struct irb *irb;
/*
* RX/TX buffer size
*/
int max_bufsize;
struct sk_buff *trans_skb; /* transmit/receive buffer */
struct sk_buff_head io_queue; /* universal I/O queue */
struct tasklet_struct ch_tasklet; /* MPC ONLY */
/*
* 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;
/* MPC ONLY section begin */
__u32 th_seq_num; /* SNA TH seq number */
__u8 th_seg;
__u32 pdu_seq;
struct sk_buff *xid_skb;
char *xid_skb_data;
struct th_header *xid_th;
struct xid2 *xid;
char *xid_id;
struct th_header *rcvd_xid_th;
struct xid2 *rcvd_xid;
char *rcvd_xid_id;
__u8 in_mpcgroup;
fsm_timer sweep_timer;
struct sk_buff_head sweep_queue;
struct th_header *discontact_th;
struct tasklet_struct ch_disc_tasklet;
/* MPC ONLY section end */
int retry; /* retry counter for misc. operations */
fsm_instance *fsm; /* finite state machine of this channel */
struct net_device *netdev; /* corresponding net_device */
struct ctcm_profile prof;
__u8 *trans_skb_data;
__u16 logflags;
__u8 sense_rc; /* last unit check sense code report control */
};
struct ctcm_priv {
struct net_device_stats stats;
unsigned long tbusy;
/* The MPC group struct of this interface */
struct mpc_group *mpcg; /* MPC only */
struct xid2 *xid; /* MPC only */
/* 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;
int buffer_size; /* ctc only */
struct channel *channel[2];
};
int ctcm_open(struct net_device *dev);
int ctcm_close(struct net_device *dev);
extern const struct attribute_group *ctcm_attr_groups[];
/*
* Compatibility macros for busy handling
* of network devices.
*/
static inline void ctcm_clear_busy_do(struct net_device *dev)
{
clear_bit(0, &(((struct ctcm_priv *)dev->ml_priv)->tbusy));
netif_wake_queue(dev);
}
static inline void ctcm_clear_busy(struct net_device *dev)
{
struct mpc_group *grp;
grp = ((struct ctcm_priv *)dev->ml_priv)->mpcg;
if (!(grp && grp->in_sweep))
ctcm_clear_busy_do(dev);
}
static inline int ctcm_test_and_set_busy(struct net_device *dev)
{
netif_stop_queue(dev);
return test_and_set_bit(0,
&(((struct ctcm_priv *)dev->ml_priv)->tbusy));
}
extern int loglevel;
extern struct channel *channels;
void ctcm_unpack_skb(struct channel *ch, struct sk_buff *pskb);
/*
* Functions related to setup and device detection.
*/
static inline int ctcm_less_than(char *id1, char *id2)
{
unsigned long dev1, dev2;
id1 = id1 + 5;
id2 = id2 + 5;
dev1 = simple_strtoul(id1, &id1, 16);
dev2 = simple_strtoul(id2, &id2, 16);
return (dev1 < dev2);
}
int ctcm_ch_alloc_buffer(struct channel *ch);
static inline int ctcm_checkalloc_buffer(struct channel *ch)
{
if (ch->trans_skb == NULL)
return ctcm_ch_alloc_buffer(ch);
if (ch->flags & CHANNEL_FLAGS_BUFSIZE_CHANGED) {
dev_kfree_skb(ch->trans_skb);
return ctcm_ch_alloc_buffer(ch);
}
return 0;
}
struct mpc_group *ctcmpc_init_mpc_group(struct ctcm_priv *priv);
/* test if protocol attribute (of struct ctcm_priv or struct channel)
* has MPC protocol setting. Type is not checked
*/
#define IS_MPC(p) ((p)->protocol == CTCM_PROTO_MPC)
/* test if struct ctcm_priv of struct net_device has MPC protocol setting */
#define IS_MPCDEV(dev) IS_MPC((struct ctcm_priv *)dev->ml_priv)
static inline gfp_t gfp_type(void)
{
return in_interrupt() ? GFP_ATOMIC : GFP_KERNEL;
}
/*
* Definition of our link level header.
*/
struct ll_header {
__u16 length;
__u16 type;
__u16 unused;
};
#define LL_HEADER_LENGTH (sizeof(struct ll_header))
#endif
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