/*
*
* Copyright 1999 Digi International (www.digi.com)
* Gene Olson <gene at digi dot com>
* James Puzzo <jamesp at digi dot com>
* Scott Kilau <scottk at digi dot com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
*/
/************************************************************************
* Master include file for Linux Realport Driver.
************************************************************************/
#ifndef __DRP_H
#define __DRP_H
#include <linux/types.h>
#include <linux/wait.h>
#include <linux/semaphore.h>
#include <linux/tty.h>
#include "digirp.h"
/************************************************************************
* Tuning parameters.
************************************************************************/
#define CHAN_MAX 64 /* Max # ports per server */
#define SEQ_MAX 128 /* Max # transmit sequences (2^n) */
#define SEQ_MASK (SEQ_MAX-1) /* Sequence buffer modulus mask */
#define TBUF_MAX 4096 /* Size of transmit buffer (2^n) */
#define RBUF_MAX 4096 /* Size of receive buffer (2^n) */
#define TBUF_MASK (TBUF_MAX-1) /* Transmit buffer modulus mask */
#define RBUF_MASK (RBUF_MAX-1) /* Receive buffer modulus mask */
#define TBUF_LOW 1000 /* Transmit low water mark */
#define UIO_BASE 1000 /* Base for write operations */
#define UIO_MIN 2000 /* Minimum size application buffer */
#define UIO_MAX 8100 /* Unix I/O buffer size */
#define MON_MAX 65536 /* Monitor buffer size (2^n) */
#define MON_MASK (MON_MAX-1) /* Monitor wrap mask */
#define DPA_MAX 65536 /* DPA buffer size (2^n) */
#define DPA_MASK (DPA_MAX-1) /* DPA wrap mask */
#define DPA_HIGH_WATER 58000 /* Enforce flow control when
* over this amount
*/
#define IDLE_MAX (20 * HZ) /* Max TCP link idle time */
#define MAX_DESC_LEN 100 /* Maximum length of stored PS
* description
*/
#define WRITEBUFLEN ((4096) + 4) /* 4 extra for alignment play space */
#define VPDSIZE 512
/************************************************************************
* Minor device decoding conventions.
************************************************************************
*
* For Linux, the net and mon devices are handled via "proc", so we
* only have to mux the "tty" devices. Since every PortServer will
* have an individual major number, the PortServer number does not
* need to be encoded, and in fact, does not need to exist.
*
*/
/*
* Port device decoding conventions:
*
* Device 00 - 3f 64 dial-in modem devices. (tty)
* Device 40 - 7f 64 dial-out tty devices. (cu)
* Device 80 - bf 64 dial-out printer devices.
*
* IS_PRINT(dev) This is a printer device.
*
* OPEN_CATEGORY(dev) Specifies the device category. No two
* devices of different categories may be open
* at the same time.
*
* The following require the category returned by OPEN_CATEGORY().
*
* OPEN_WAIT_AVAIL(cat) Waits on open until the device becomes
* available. Fails if NDELAY specified.
*
* OPEN_WAIT_CARRIER(cat) Waits on open if carrier is not present.
* Succeeds if NDELAY is given.
*
* OPEN_FORCES_CARRIER(cat) Carrier is forced high on open.
*
*/
#define PORT_NUM(dev) ((dev) & 0x3f)
#define OPEN_CATEGORY(dev) ((((dev) & 0x80) & 0x40))
#define IS_PRINT(dev) (((dev) & 0xff) >= 0x80)
#define OPEN_WAIT_AVAIL(cat) (((cat) & 0x40) == 0x000)
#define OPEN_WAIT_CARRIER(cat) (((cat) & 0x40) == 0x000)
#define OPEN_FORCES_CARRIER(cat) (((cat) & 0x40) != 0x000)
/************************************************************************
* Modem signal defines for 16450/16550 compatible FEP.
* set in ch_mout, ch_mflow, ch_mlast etc
************************************************************************/
/* TODO : Re-verify that these modem signal definitions are correct */
#define DM_DTR 0x01
#define DM_RTS 0x02
#define DM_RTS_TOGGLE 0x04
#define DM_OUT1 0x04
#define DM_OUT2 0x08
#define DM_CTS 0x10
#define DM_DSR 0x20
#define DM_RI 0x40
#define DM_CD 0x80 /* This is the DCD flag */
/************************************************************************
* Realport Event Flags.
************************************************************************/
#define EV_OPU 0x0001 /* Ouput paused by client */
#define EV_OPS 0x0002 /* Output paused by XOFF */
#define EV_OPX 0x0004 /* Output paused by XXOFF */
#define EV_OPH 0x0008 /* Output paused by MFLOW */
#define EV_IPU 0x0010 /* Input paused by client */
#define EV_IPS 0x0020 /* Input paused by hi/low water */
#define EV_TXB 0x0040 /* Transmit break pending */
#define EV_TXI 0x0080 /* Transmit immediate pending */
#define EV_TXF 0x0100 /* Transmit flow control pending */
#define EV_RXB 0x0200 /* Break received */
/************************************************************************
* Realport CFLAGS.
************************************************************************/
#define CF_CS5 0x0000 /* 5 bit characters */
#define CF_CS6 0x0010 /* 6 bit characters */
#define CF_CS7 0x0020 /* 7 bit characters */
#define CF_CS8 0x0030 /* 8 bit characters */
#define CF_CSIZE 0x0030 /* Character size */
#define CF_CSTOPB 0x0040 /* Two stop bits */
#define CF_CREAD 0x0080 /* Enable receiver */
#define CF_PARENB 0x0100 /* Enable parity */
#define CF_PARODD 0x0200 /* Odd parity */
#define CF_HUPCL 0x0400 /* Drop DTR on close */
/************************************************************************
* Realport XFLAGS.
************************************************************************/
#define XF_XPAR 0x0001 /* Enable Mark/Space Parity */
#define XF_XMODEM 0x0002 /* Enable in-band modem signalling */
#define XF_XCASE 0x0004 /* Convert special characters */
#define XF_XEDATA 0x0008 /* Error data in stream */
#define XF_XTOSS 0x0010 /* Toss IXANY characters */
#define XF_XIXON 0x0020 /* xxon/xxoff enable */
/************************************************************************
* Realport IFLAGS.
************************************************************************/
#define IF_IGNBRK 0x0001 /* Ignore input break */
#define IF_BRKINT 0x0002 /* Break interrupt */
#define IF_IGNPAR 0x0004 /* Ignore error characters */
#define IF_PARMRK 0x0008 /* Error chars marked with 0xff */
#define IF_INPCK 0x0010 /* Input parity checking enabled */
#define IF_ISTRIP 0x0020 /* Input chars masked with 0x7F */
#define IF_IXON 0x0400 /* Output software flow control */
#define IF_IXANY 0x0800 /* Restart output on any char */
#define IF_IXOFF 0x1000 /* Input software flow control */
#define IF_DOSMODE 0x8000 /* 16450-compatible errors */
/************************************************************************
* Realport OFLAGS.
************************************************************************/
#define OF_OLCUC 0x0002 /* Map lower to upper case */
#define OF_ONLCR 0x0004 /* Map NL to CR-NL */
#define OF_OCRNL 0x0008 /* Map CR to NL */
#define OF_ONOCR 0x0010 /* No CR output at column 0 */
#define OF_ONLRET 0x0020 /* Assume NL does NL/CR */
#define OF_TAB3 0x1800 /* Tabs expand to 8 spaces */
#define OF_TABDLY 0x1800 /* Tab delay */
/************************************************************************
* Unit flag definitions for un_flag.
************************************************************************/
/* These are the DIGI unit flags */
#define UN_EXCL 0x00010000 /* Exclusive open */
#define UN_STICKY 0x00020000 /* TTY Settings are now sticky */
#define UN_BUSY 0x00040000 /* Some work this channel */
#define UN_PWAIT 0x00080000 /* Printer waiting for terminal */
#define UN_TIME 0x00100000 /* Waiting on time */
#define UN_EMPTY 0x00200000 /* Waiting output queue empty */
#define UN_LOW 0x00400000 /* Waiting output low water */
#define UN_DIGI_MASK 0x00FF0000 /* Waiting output low water */
/*
* Definitions for async_struct (and serial_struct) flags field
*
* these are the ASYNC flags copied from serial.h
*
*/
#define UN_HUP_NOTIFY 0x0001 /* Notify getty on hangups and
* closes on the callout port
*/
#define UN_FOURPORT 0x0002 /* Set OU1, OUT2 per AST Fourport settings */
#define UN_SAK 0x0004 /* Secure Attention Key (Orange book) */
#define UN_SPLIT_TERMIOS 0x0008 /* Separate termios for dialin/callout */
#define UN_SPD_MASK 0x0030
#define UN_SPD_HI 0x0010 /* Use 56000 instead of 38400 bps */
#define UN_SPD_VHI 0x0020 /* Use 115200 instead of 38400 bps */
#define UN_SPD_CUST 0x0030 /* Use user-specified divisor */
#define UN_SKIP_TEST 0x0040 /* Skip UART test during autoconfiguration */
#define UN_AUTO_IRQ 0x0080 /* Do automatic IRQ during autoconfiguration */
#define UN_SESSION_LOCKOUT 0x0100 /* Lock out cua opens based on session */
#define UN_PGRP_LOCKOUT 0x0200 /* Lock out cua opens based on pgrp */
#define UN_CALLOUT_NOHUP 0x0400 /* Don't do hangups for cua device */
#define UN_FLAGS 0x0FFF /* Possible legal async flags */
#define UN_USR_MASK 0x0430 /* Legal flags that non-privileged
* users can set or reset
*/
#define UN_INITIALIZED 0x80000000 /* Serial port was initialized */
#define UN_CALLOUT_ACTIVE 0x40000000 /* Call out device is active */
#define UN_NORMAL_ACTIVE 0x20000000 /* Normal device is active */
#define UN_BOOT_AUTOCONF 0x10000000 /* Autoconfigure port on bootup */
#define UN_CLOSING 0x08000000 /* Serial port is closing */
#define UN_CTS_FLOW 0x04000000 /* Do CTS flow control */
#define UN_CHECK_CD 0x02000000 /* i.e., CLOCAL */
#define UN_SHARE_IRQ 0x01000000 /* for multifunction cards */
/************************************************************************
* Structure for terminal or printer unit. struct un_struct
*
* Note that in some places the code assumes the "tty_t" is placed
* first in the structure.
************************************************************************/
struct un_struct {
struct tty_struct *un_tty; /* System TTY struct */
struct ch_struct *un_ch; /* Associated channel */
ushort un_open_count; /* Successful open count */
int un_flag; /* Unit flags */
ushort un_tbusy; /* Busy transmit count */
wait_queue_head_t un_open_wait;
wait_queue_head_t un_close_wait;
ushort un_type;
struct device *un_sysfs;
};
/************************************************************************
* Channel State Numbers for ch_state.
************************************************************************/
/*
* The ordering is important.
*
* state <= CS_WAIT_CANCEL implies the channel is definitely closed.
*
* state >= CS_WAIT_FAIL implies the channel is definitely open.
*
* state >= CS_READY implies data is allowed on the channel.
*/
enum dgrp_ch_state_t {
CS_IDLE = 0, /* Channel is idle */
CS_WAIT_OPEN = 1, /* Waiting for Immediate Open Resp */
CS_WAIT_CANCEL = 2, /* Waiting for Per/Incom Cancel Resp */
CS_WAIT_FAIL = 3, /* Waiting for Immed Open Failure */
CS_SEND_QUERY = 4, /* Ready to send Port Query */
CS_WAIT_QUERY = 5, /* Waiting for Port Query Response */
CS_READY = 6, /* Ready to accept commands and data */
CS_SEND_CLOSE = 7, /* Ready to send Close Request */
CS_WAIT_CLOSE = 8 /* Waiting for Close Response */
};
/************************************************************************
* Device flag definitions for ch_flag.
************************************************************************/
/*
* Note that the state of the two carrier based flags is key. When
* we check for carrier state transitions, we look at the current
* physical state of the DCD line and compare it with PHYS_CD (which
* was the state the last time we checked), and we also determine
* a new virtual state (composite of the physical state, FORCEDCD,
* CLOCAL, etc.) and compare it with VIRT_CD.
*
* VIRTUAL transitions high will have the side effect of waking blocked
* opens.
*
* PHYSICAL transitions low will cause hangups to occur _IF_ the virtual
* state is also low. We DON'T want to hangup on a PURE virtual drop.
*/
#define CH_HANGUP 0x00002 /* Server port ready to close */
#define CH_VIRT_CD 0x00004 /* Carrier was virtually present */
#define CH_PHYS_CD 0x00008 /* Carrier was physically present */
#define CH_CLOCAL 0x00010 /* CLOCAL set in cflags */
#define CH_BAUD0 0x00020 /* Baud rate zero hangup */
#define CH_FAST_READ 0x00040 /* Fast reads are enabled */
#define CH_FAST_WRITE 0x00080 /* Fast writes are enabled */
#define CH_PRON 0x00100 /* Printer on string active */
#define CH_RX_FLUSH 0x00200 /* Flushing receive data */
#define CH_LOW 0x00400 /* Thread waiting for LOW water */
#define CH_EMPTY 0x00800 /* Thread waiting for EMPTY */
#define CH_DRAIN 0x01000 /* Close is waiting to drain */
#define CH_INPUT 0x02000 /* Thread waiting for INPUT */
#define CH_RXSTOP 0x04000 /* Stop output to ldisc */
#define CH_PARAM 0x08000 /* A parameter was updated */
#define CH_WAITING_SYNC 0x10000 /* A pending sync was assigned
* to this port.
*/
#define CH_PORT_GONE 0x20000 /* Port has disappeared */
#define CH_TX_BREAK 0x40000 /* TX Break to be sent,
* but has not yet.
*/
/************************************************************************
* Types of Open Requests for ch_otype.
************************************************************************/
#define OTYPE_IMMEDIATE 0 /* Immediate Open */
#define OTYPE_PERSISTENT 1 /* Persistent Open */
#define OTYPE_INCOMING 2 /* Incoming Open */
/************************************************************************
* Request/Response flags.
************************************************************************/
#define RR_SEQUENCE 0x0001 /* Get server RLAST, TIN */
#define RR_STATUS 0x0002 /* Get server MINT, EINT */
#define RR_BUFFER 0x0004 /* Get server RSIZE, TSIZE */
#define RR_CAPABILITY 0x0008 /* Get server port capabilities */
#define RR_TX_FLUSH 0x0040 /* Flush output buffers */
#define RR_RX_FLUSH 0x0080 /* Flush input buffers */
#define RR_TX_STOP 0x0100 /* Pause output */
#define RR_RX_STOP 0x0200 /* Pause input */
#define RR_TX_START 0x0400 /* Start output */
#define RR_RX_START 0x0800 /* Start input */
#define RR_TX_BREAK 0x1000 /* Send BREAK */
#define RR_TX_ICHAR 0x2000 /* Send character immediate */
/************************************************************************
* Channel information structure. struct ch_struct
************************************************************************/
struct ch_struct {
struct digi_struct ch_digi; /* Digi variables */
int ch_edelay; /* Digi edelay */
struct tty_port port;
struct un_struct ch_tun; /* Terminal unit info */
struct un_struct ch_pun; /* Printer unit info */
struct nd_struct *ch_nd; /* Node pointer */
u8 *ch_tbuf; /* Local Transmit Buffer */
u8 *ch_rbuf; /* Local Receive Buffer */
ulong ch_cpstime; /* Printer CPS time */
ulong ch_waketime; /* Printer wake time */
ulong ch_flag; /* CH_* flags */
enum dgrp_ch_state_t ch_state; /* CS_* Protocol state */
ushort ch_send; /* Bit vector of RR_* requests */
ushort ch_expect; /* Bit vector of RR_* responses */
ushort ch_wait_carrier; /* Thread count waiting for carrier */
ushort ch_wait_count[3]; /* Thread count waiting by otype */
ushort ch_portnum; /* Port number */
ushort ch_open_count; /* Successful open count */
ushort ch_category; /* Device category */
ushort ch_open_error; /* Last open error number */
ushort ch_break_time; /* Pending break request time */
ushort ch_cpsrem; /* Printer CPS remainder */
ushort ch_ocook; /* Realport fastcook oflags */
ushort ch_inwait; /* Thread count in CLIST input */
ushort ch_tin; /* Local transmit buffer in ptr */
ushort ch_tout; /* Local transmit buffer out ptr */
ushort ch_s_tin; /* Realport TIN */
ushort ch_s_tpos; /* Realport TPOS */
ushort ch_s_tsize; /* Realport TSIZE */
ushort ch_s_treq; /* Realport TREQ */
ushort ch_s_elast; /* Realport ELAST */
ushort ch_rin; /* Local receive buffer in ptr */
ushort ch_rout; /* Local receive buffer out ptr */
ushort ch_s_rin; /* Realport RIN */
/* David Fries 7-13-2001, ch_s_rin should be renamed ch_s_rout because
* the variable we want to represent is the PortServer's ROUT, which is
* the sequence number for the next byte the PortServer will send us.
* RIN is the sequence number for the next byte the PortServer will
* receive from the uart. The port server will send data as long as
* ROUT is less than RWIN. What would happen is the port is opened, it
* receives data, it gives the value of RIN, we set the RWIN to
* RIN+RBUF_MAX-1, it sends us RWIN-ROUT bytes which overflows. ROUT
* is set to zero when the port is opened, so we start at zero and
* count up as data is received.
*/
ushort ch_s_rwin; /* Realport RWIN */
ushort ch_s_rsize; /* Realport RSIZE */
ushort ch_tmax; /* Local TMAX */
ushort ch_ttime; /* Local TTIME */
ushort ch_rmax; /* Local RMAX */
ushort ch_rtime; /* Local RTIME */
ushort ch_rlow; /* Local RLOW */
ushort ch_rhigh; /* Local RHIGH */
ushort ch_s_tmax; /* Realport TMAX */
ushort ch_s_ttime; /* Realport TTIME */
ushort ch_s_rmax; /* Realport RMAX */
ushort ch_s_rtime; /* Realport RTIME */
ushort ch_s_rlow; /* Realport RLOW */
ushort ch_s_rhigh; /* Realport RHIGH */
ushort ch_brate; /* Local baud rate */
ushort ch_cflag; /* Local tty cflags */
ushort ch_iflag; /* Local tty iflags */
ushort ch_oflag; /* Local tty oflags */
ushort ch_xflag; /* Local tty xflags */
ushort ch_s_brate; /* Realport BRATE */
ushort ch_s_cflag; /* Realport CFLAG */
ushort ch_s_iflag; /* Realport IFLAG */
ushort ch_s_oflag; /* Realport OFLAG */
ushort ch_s_xflag; /* Realport XFLAG */
u8 ch_otype; /* Open request type */
u8 ch_pscan_savechar; /* Last character read by parity scan */
u8 ch_pscan_state; /* PScan State based on last 2 chars */
u8 ch_otype_waiting; /* Type of open pending in server */
u8 ch_flush_seq; /* Receive flush end sequence */
u8 ch_s_mlast; /* Realport MLAST */
u8 ch_mout; /* Local MOUT */
u8 ch_mflow; /* Local MFLOW */
u8 ch_mctrl; /* Local MCTRL */
u8 ch_xon; /* Local XON */
u8 ch_xoff; /* Local XOFF */
u8 ch_lnext; /* Local LNEXT */
u8 ch_xxon; /* Local XXON */
u8 ch_xxoff; /* Local XXOFF */
u8 ch_s_mout; /* Realport MOUT */
u8 ch_s_mflow; /* Realport MFLOW */
u8 ch_s_mctrl; /* Realport MCTRL */
u8 ch_s_xon; /* Realport XON */
u8 ch_s_xoff; /* Realport XOFF */
u8 ch_s_lnext; /* Realport LNEXT */
u8 ch_s_xxon; /* Realport XXON */
u8 ch_s_xxoff; /* Realport XXOFF */
wait_queue_head_t ch_flag_wait; /* Wait queue for ch_flag changes */
wait_queue_head_t ch_sleep; /* Wait queue for my_sleep() */
int ch_custom_speed; /* Realport custom speed */
int ch_txcount; /* Running TX count */
int ch_rxcount; /* Running RX count */
};
/************************************************************************
* Node State definitions.
************************************************************************/
enum dgrp_nd_state_t {
NS_CLOSED = 0, /* Network device is closed */
NS_IDLE = 1, /* Network connection inactive */
NS_SEND_QUERY = 2, /* Send server query */
NS_WAIT_QUERY = 3, /* Wait for query response */
NS_READY = 4, /* Network ready */
NS_SEND_ERROR = 5 /* Must send error hangup */
};
#define ND_STATE_STR(x) \
((x) == NS_CLOSED ? "CLOSED" : \
((x) == NS_IDLE ? "IDLE" : \
((x) == NS_SEND_QUERY ? "SEND_QUERY" : \
((x) == NS_WAIT_QUERY ? "WAIT_QUERY" : \
((x) == NS_READY ? "READY" : \
((x) == NS_SEND_ERROR ? "SEND_ERROR" : "UNKNOWN"))))))
/************************************************************************
* Node Flag definitions.
************************************************************************/
#define ND_SELECT 0x0001 /* Multiple net read selects */
#define ND_DEB_WAIT 0x0002 /* Debug Device waiting */
/************************************************************************
* Monitoring flag definitions.
************************************************************************/
#define MON_WAIT_DATA 0x0001 /* Waiting for buffer data */
#define MON_WAIT_SPACE 0x0002 /* Waiting for buffer space */
/************************************************************************
* DPA flag definitions.
************************************************************************/
#define DPA_WAIT_DATA 0x0001 /* Waiting for buffer data */
#define DPA_WAIT_SPACE 0x0002 /* Waiting for buffer space */
/************************************************************************
* Definitions taken from Realport Dump.
************************************************************************/
#define RPDUMP_MAGIC "Digi-RealPort-1.0"
#define RPDUMP_MESSAGE 0xE2 /* Descriptive message */
#define RPDUMP_RESET 0xE7 /* Connection reset */
#define RPDUMP_CLIENT 0xE8 /* Client data */
#define RPDUMP_SERVER 0xE9 /* Server data */
/************************************************************************
* Node request/response definitions.
************************************************************************/
#define NR_ECHO 0x0001 /* Server echo packet */
#define NR_IDENT 0x0002 /* Server Product ID */
#define NR_CAPABILITY 0x0004 /* Server Capabilties */
#define NR_VPD 0x0008 /* Server VPD, if any */
#define NR_PASSWORD 0x0010 /* Server Password */
/************************************************************************
* Registration status of the node's Linux struct tty_driver structures.
************************************************************************/
#define SERIAL_TTDRV_REG 0x0001 /* nd_serial_ttdriver registered */
#define CALLOUT_TTDRV_REG 0x0002 /* nd_callout_ttdriver registered */
#define XPRINT_TTDRV_REG 0x0004 /* nd_xprint_ttdriver registered */
/************************************************************************
* Node structure. There exists one of these for each associated
* realport server.
************************************************************************/
struct nd_struct {
struct list_head list;
long nd_major; /* Node's major number */
long nd_ID; /* Node's ID code */
char nd_serial_name[50]; /* "tty_dgrp_<id>_" + null */
char nd_callout_name[50]; /* "cu_dgrp_<id>_" + null */
char nd_xprint_name[50]; /* "pr_dgrp_<id>_" + null */
char password[16]; /* Password for server, if needed */
int nd_tty_ref_cnt; /* Linux tty reference count */
struct proc_dir_entry *nd_net_de; /* Dir entry for /proc/dgrp/net */
struct proc_dir_entry *nd_mon_de; /* Dir entry for /proc/dgrp/mon */
struct proc_dir_entry *nd_ports_de; /* Dir entry for /proc/dgrp/ports*/
struct proc_dir_entry *nd_dpa_de; /* Dir entry for /proc/dgrp/dpa */
spinlock_t nd_lock; /* General node lock */
struct semaphore nd_net_semaphore; /* Net read/write lock */
struct semaphore nd_mon_semaphore; /* Monitor buffer lock */
spinlock_t nd_dpa_lock; /* DPA buffer lock */
enum dgrp_nd_state_t nd_state; /* NS_* network state */
int nd_chan_count; /* # active channels */
int nd_flag; /* Node flags */
int nd_send; /* Responses to send */
int nd_expect; /* Responses we expect */
u8 *nd_iobuf; /* Network R/W Buffer */
wait_queue_head_t nd_tx_waitq; /* Network select wait queue */
u8 *nd_inputbuf; /* Input Buffer */
u8 *nd_inputflagbuf; /* Input Flags Buffer */
int nd_tx_deposit; /* Accumulated transmit deposits */
int nd_tx_charge; /* Accumulated transmit charges */
int nd_tx_credit; /* Current TX credit */
int nd_tx_ready; /* Ready to transmit */
int nd_tx_work; /* TX work waiting */
ulong nd_tx_time; /* Last transmit time */
ulong nd_poll_time; /* Next scheduled poll time */
int nd_delay; /* Current TX delay */
int nd_rate; /* Current TX rate */
struct link_struct nd_link; /* Link speed params. */
int nd_seq_in; /* TX seq in ptr */
int nd_seq_out; /* TX seq out ptr */
int nd_unack; /* Unacknowledged byte count */
int nd_remain; /* Remaining receive bytes */
int nd_tx_module; /* Current TX module # */
int nd_rx_module; /* Current RX module # */
char *nd_error; /* Protocol error message */
int nd_write_count; /* drp_write() call count */
int nd_read_count; /* drp_read() count */
int nd_send_count; /* TCP message sent */
int nd_tx_byte; /* Transmit byte count */
int nd_rx_byte; /* Receive byte count */
ulong nd_mon_lbolt; /* Monitor start time */
int nd_mon_flag; /* Monitor flags */
int nd_mon_in; /* Monitor in pointer */
int nd_mon_out; /* Monitor out pointer */
wait_queue_head_t nd_mon_wqueue; /* Monitor wait queue (on flags) */
u8 *nd_mon_buf; /* Monitor buffer */
ulong nd_dpa_lbolt; /* DPA start time */
int nd_dpa_flag; /* DPA flags */
int nd_dpa_in; /* DPA in pointer */
int nd_dpa_out; /* DPA out pointer */
wait_queue_head_t nd_dpa_wqueue; /* DPA wait queue (on flags) */
u8 *nd_dpa_buf; /* DPA buffer */
uint nd_dpa_debug;
uint nd_dpa_port;
wait_queue_head_t nd_seq_wque[SEQ_MAX]; /* TX thread wait queues */
u8 nd_seq_wait[SEQ_MAX]; /* Transmit thread wait count */
ushort nd_seq_size[SEQ_MAX]; /* Transmit seq packet size */
ulong nd_seq_time[SEQ_MAX]; /* Transmit seq packet time */
ushort nd_hw_ver; /* HW version returned from PS */
ushort nd_sw_ver; /* SW version returned from PS */
uint nd_hw_id; /* HW ID returned from PS */
u8 nd_ps_desc[MAX_DESC_LEN+1]; /* Description from PS */
uint nd_vpd_len; /* VPD len, if any */
u8 nd_vpd[VPDSIZE]; /* VPD, if any */
ulong nd_ttdriver_flags; /* Registration status */
struct tty_driver *nd_serial_ttdriver; /* Linux TTYDRIVER structure */
struct tty_driver *nd_callout_ttdriver; /* Linux TTYDRIVER structure */
struct tty_driver *nd_xprint_ttdriver; /* Linux TTYDRIVER structure */
u8 *nd_writebuf; /* Used to cache data read
* from user
*/
struct ch_struct nd_chan[CHAN_MAX]; /* Channel array */
struct device *nd_class_dev; /* Hang our sysfs stuff off of here */
};
#endif /* __DRP_H */