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Diffstat (limited to 'drivers/staging/dgrp/drp.h')
| -rw-r--r-- | drivers/staging/dgrp/drp.h | 693 |
1 files changed, 693 insertions, 0 deletions
diff --git a/drivers/staging/dgrp/drp.h b/drivers/staging/dgrp/drp.h new file mode 100644 index 000000000000..84a1e7be4899 --- /dev/null +++ b/drivers/staging/dgrp/drp.h @@ -0,0 +1,693 @@ +/* + * + * 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 */ |