500 lines
14 KiB
C
500 lines
14 KiB
C
/*
|
|
* Device driver for Specialix range (SI/XIO) of serial line multiplexors.
|
|
* 'C' definitions for Specialix serial multiplex driver.
|
|
*
|
|
* Copyright (C) 1990, 1992 Specialix International,
|
|
* Copyright (C) 1993, Andy Rutter <andy@acronym.co.uk>
|
|
* Copyright (C) 1995, Peter Wemm <peter@haywire.dialix.com>
|
|
*
|
|
* Derived from: SunOS 4.x version
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notices, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notices, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Andy Rutter of
|
|
* Advanced Methods and Tools Ltd. based on original information
|
|
* from Specialix International.
|
|
* 4. Neither the name of Advanced Methods and Tools, nor Specialix
|
|
* International may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
|
|
* NO EVENT SHALL THE AUTHORS BE LIABLE.
|
|
*
|
|
* $Id$
|
|
*/
|
|
|
|
/*
|
|
* Macro to turn a device number into various parameters, and test for
|
|
* CONTROL device.
|
|
* max of 4 controllers with up to 32 ports per controller.
|
|
* minor device allocation is:
|
|
* adapter port
|
|
* 0 0-31
|
|
* 1 32-63
|
|
* 2 64-95
|
|
* 3 96-127
|
|
*/
|
|
#define SI_MAXPORTPERCARD 32
|
|
#define SI_MAXCONTROLLER 4
|
|
|
|
|
|
/*
|
|
* breakup of minor device number:
|
|
* lowest 5 bits: port number on card 0x1f
|
|
* next 2 bits: card number 0x60
|
|
* top bit: callout 0x80
|
|
* next 8 bits is the major number
|
|
* next 2 bits select initial/lock states
|
|
* next 1 bit selects the master control device
|
|
*/
|
|
|
|
#define SI_PORT_MASK 0x1f
|
|
#define SI_CARD_MASK 0x60
|
|
#define SI_TTY_MASK 0x7f
|
|
#define SI_CALLOUT_MASK 0x80
|
|
#define SI_INIT_STATE_MASK 0x10000
|
|
#define SI_LOCK_STATE_MASK 0x20000
|
|
#define SI_STATE_MASK 0x30000
|
|
#define SI_CONTROLDEV_MASK 0x40000
|
|
#define SI_SPECIAL_MASK 0x70000
|
|
|
|
#define SI_PORT(m) (m & SI_PORT_MASK)
|
|
#define SI_CARD(m) ((m & SI_CARD_MASK) >> 5)
|
|
#define SI_TTY(m) (m & SI_TTY_MASK)
|
|
|
|
#define IS_CALLOUT(m) (m & SI_CALLOUT_MASK)
|
|
#define IS_STATE(m) (m & SI_STATE_MASK)
|
|
#define IS_CONTROLDEV(m) (m & SI_CONTROLDEV_MASK)
|
|
#define IS_SPECIAL(m) (m & SI_SPECIAL_MASK)
|
|
|
|
#define MINOR2SC(m) (&si_softc[SI_CARD(m)])
|
|
#define MINOR2PP(m) (MINOR2SC((m))->sc_ports + SI_PORT((m)))
|
|
#define MINOR2TP(m) (MINOR2PP((m))->sp_tty)
|
|
#define TP2PP(tp) (MINOR2PP(SI_TTY(minor((tp)->t_dev))))
|
|
|
|
/* Adapter types */
|
|
#define SIEMPTY 0
|
|
#define SIHOST 1
|
|
#define SI2 2
|
|
#define SIHOST2 3
|
|
#define SIEISA 4
|
|
|
|
/* Buffer parameters */
|
|
#define SI_BUFFERSIZE 256
|
|
|
|
typedef unsigned char BYTE; /* Type cast for unsigned 8 bit */
|
|
typedef unsigned short WORD; /* Type cast for unsigned 16 bit */
|
|
|
|
|
|
/*
|
|
* Hardware `registers', stored in the shared memory.
|
|
* These are related to the firmware running on the Z280.
|
|
*/
|
|
|
|
struct si_reg {
|
|
BYTE initstat;
|
|
BYTE memsize;
|
|
WORD int_count;
|
|
WORD revision;
|
|
BYTE rx_int_count;
|
|
BYTE spare;
|
|
WORD int_pending;
|
|
WORD int_counter;
|
|
BYTE int_scounter;
|
|
BYTE res[0x80 - 13];
|
|
};
|
|
|
|
/*
|
|
* Per module control structure, stored in shared memory.
|
|
*/
|
|
struct si_module {
|
|
WORD sm_next; /* Next module */
|
|
BYTE sm_type; /* Number of channels */
|
|
BYTE sm_number; /* Module number on cable */
|
|
BYTE sm_dsr; /* Private dsr copy */
|
|
BYTE sm_res[0x80 - 5]; /* Reserve space to 128 bytes */
|
|
};
|
|
|
|
/*
|
|
* The 'next' pointer & with 0x7fff + SI base addres give
|
|
* the address of the next module block if fitted. (else 0)
|
|
* Note that next points to the TX buffer so 0x60 must be
|
|
* subtracted to find the true base.
|
|
*
|
|
* Type is a bit field as follows: The bottom 5 bits are the
|
|
* number of channels on this module, the top 3 bits are
|
|
* as the module type thus:
|
|
*
|
|
* 000 2698 RS232 module (4 port or 8 port)
|
|
* 001 Reserved for 2698 RS422 module
|
|
* 010 Reserved for 8530 based sync module
|
|
* 011 Reserved for parallel printer module
|
|
* 100 Reserved for network module
|
|
* 101-111 Reserved for expansion.
|
|
*
|
|
* The number field is the cable position of the module.
|
|
*/
|
|
#define M232 0x00
|
|
#define M422 0x20 /* not supported */
|
|
#define MSYNC 0x40 /* this is the Telebit Netblazer module */
|
|
#define MCENT 0x60 /* not supported */
|
|
#define MNET 0x80 /* not supported */
|
|
#define MMASK 0x1F
|
|
|
|
/*
|
|
* Per channel(port) control structure, stored in shared memory.
|
|
*/
|
|
struct si_channel {
|
|
/*
|
|
* Generic stuff
|
|
*/
|
|
WORD next; /* Next Channel */
|
|
WORD addr_uart; /* Uart address */
|
|
WORD module; /* address of module struct */
|
|
BYTE type; /* Uart type */
|
|
BYTE fill;
|
|
/*
|
|
* Uart type specific stuff
|
|
*/
|
|
BYTE x_status; /* XON / XOFF status */
|
|
BYTE c_status; /* cooking status */
|
|
BYTE hi_rxipos; /* stuff into rx buff */
|
|
BYTE hi_rxopos; /* stuff out of rx buffer */
|
|
BYTE hi_txopos; /* Stuff into tx ptr */
|
|
BYTE hi_txipos; /* ditto out */
|
|
BYTE hi_stat; /* Command register */
|
|
BYTE dsr_bit; /* Magic bit for DSR */
|
|
BYTE txon; /* TX XON char */
|
|
BYTE txoff; /* ditto XOFF */
|
|
BYTE rxon; /* RX XON char */
|
|
BYTE rxoff; /* ditto XOFF */
|
|
BYTE hi_mr1; /* mode 1 image */
|
|
BYTE hi_mr2; /* mode 2 image */
|
|
BYTE hi_csr; /* clock register */
|
|
BYTE hi_op; /* Op control */
|
|
BYTE hi_ip; /* Input pins */
|
|
BYTE hi_state; /* status */
|
|
BYTE hi_prtcl; /* Protocol */
|
|
BYTE hi_txon; /* host copy tx xon stuff */
|
|
BYTE hi_txoff;
|
|
BYTE hi_rxon;
|
|
BYTE hi_rxoff;
|
|
BYTE close_prev; /* Was channel previously closed */
|
|
BYTE hi_break; /* host copy break process */
|
|
BYTE break_state; /* local copy ditto */
|
|
BYTE hi_mask; /* Mask for CS7 etc. */
|
|
BYTE mask_z280; /* Z280's copy */
|
|
BYTE res[0x60 - 36];
|
|
BYTE hi_txbuf[SI_BUFFERSIZE];
|
|
BYTE hi_rxbuf[SI_BUFFERSIZE];
|
|
BYTE res1[0xA0];
|
|
};
|
|
|
|
/*
|
|
* Register definitions
|
|
*/
|
|
|
|
/*
|
|
* Break input control register definitions
|
|
*/
|
|
#define BR_IGN 0x01 /* Ignore any received breaks */
|
|
#define BR_INT 0x02 /* Interrupt on received break */
|
|
#define BR_PARMRK 0x04 /* Enable parmrk parity error processing */
|
|
#define BR_PARIGN 0x08 /* Ignore chars with parity errors */
|
|
|
|
/*
|
|
* Protocol register provided by host for XON/XOFF and cooking
|
|
*/
|
|
#define SP_TANY 0x01 /* Tx XON any char */
|
|
#define SP_TXEN 0x02 /* Tx XON/XOFF enabled */
|
|
#define SP_CEN 0x04 /* Cooking enabled */
|
|
#define SP_RXEN 0x08 /* Rx XON/XOFF enabled */
|
|
#define SP_DCEN 0x20 /* DCD / DTR check */
|
|
#define SP_PAEN 0x80 /* Parity checking enabled */
|
|
|
|
/*
|
|
* HOST STATUS / COMMAND REGISTER
|
|
*/
|
|
#define IDLE_OPEN 0x00 /* Default mode, TX and RX polled
|
|
buffer updated etc */
|
|
#define LOPEN 0x02 /* Local open command (no modem ctl */
|
|
#define MOPEN 0x04 /* Open and monitor modem lines (blocks
|
|
for DCD */
|
|
#define MPEND 0x06 /* Wating for DCD */
|
|
#define CONFIG 0x08 /* Channel config has changed */
|
|
#define CLOSE 0x0A /* Close channel */
|
|
#define SBREAK 0x0C /* Start break */
|
|
#define EBREAK 0x0E /* End break */
|
|
#define IDLE_CLOSE 0x10 /* Closed channel */
|
|
#define IDLE_BREAK 0x12 /* In a break */
|
|
#define FCLOSE 0x14 /* Force a close */
|
|
#define RESUME 0x16 /* Clear a pending xoff */
|
|
#define WFLUSH 0x18 /* Flush output buffer */
|
|
#define RFLUSH 0x1A /* Flush input buffer */
|
|
|
|
/*
|
|
* Host status register
|
|
*/
|
|
#define ST_BREAK 0x01 /* Break received (clear with config) */
|
|
|
|
/*
|
|
* OUTPUT PORT REGISTER
|
|
*/
|
|
#define OP_CTS 0x01 /* Enable CTS */
|
|
#define OP_DSR 0x02 /* Enable DSR */
|
|
/*
|
|
* INPUT PORT REGISTER
|
|
*/
|
|
#define IP_DCD 0x04 /* DCD High */
|
|
#define IP_DTR 0x20 /* DTR High */
|
|
#define IP_RTS 0x02 /* RTS High */
|
|
#define IP_RI 0x40 /* RI High */
|
|
|
|
/*
|
|
* Mode register and uart specific stuff
|
|
*/
|
|
/*
|
|
* MODE REGISTER 1
|
|
*/
|
|
#define MR1_5_BITS 0x00
|
|
#define MR1_6_BITS 0x01
|
|
#define MR1_7_BITS 0x02
|
|
#define MR1_8_BITS 0x03
|
|
/*
|
|
* Parity
|
|
*/
|
|
#define MR1_ODD 0x04
|
|
#define MR1_EVEN 0x00
|
|
/*
|
|
* Parity mode
|
|
*/
|
|
#define MR1_WITH 0x00
|
|
#define MR1_FORCE 0x08
|
|
#define MR1_NONE 0x10
|
|
#define MR1_SPECIAL 0x18
|
|
/*
|
|
* Error mode
|
|
*/
|
|
#define MR1_CHAR 0x00
|
|
#define MR1_BLOCK 0x20
|
|
/*
|
|
* Request to send line automatic control
|
|
*/
|
|
#define MR1_CTSCONT 0x80
|
|
|
|
/*
|
|
* MODE REGISTER 2
|
|
*/
|
|
/*
|
|
* Number of stop bits
|
|
*/
|
|
#define MR2_1_STOP 0x07
|
|
#define MR2_2_STOP 0x0F
|
|
/*
|
|
* Clear to send automatic testing before character sent
|
|
*/
|
|
#define MR2_RTSCONT 0x10
|
|
/*
|
|
* Reset RTS automatically after sending character?
|
|
*/
|
|
#define MR2_CTSCONT 0x20
|
|
/*
|
|
* Channel mode
|
|
*/
|
|
#define MR2_NORMAL 0x00
|
|
#define MR2_AUTO 0x40
|
|
#define MR2_LOCAL 0x80
|
|
#define MR2_REMOTE 0xC0
|
|
|
|
/*
|
|
* CLOCK SELECT REGISTER - this and the code assumes ispeed == ospeed
|
|
*/
|
|
/*
|
|
* Clocking rates are in lower and upper nibbles.. R = upper, T = lower
|
|
*/
|
|
#define CLK75 0x0
|
|
#define CLK110 0x1 /* 110 on XIO!! */
|
|
#define CLK38400 0x2 /* out of sequence */
|
|
#define CLK150 0x3
|
|
#define CLK300 0x4
|
|
#define CLK600 0x5
|
|
#define CLK1200 0x6
|
|
#define CLK2000 0x7
|
|
#define CLK2400 0x8
|
|
#define CLK4800 0x9
|
|
#define CLK7200 0xa /* unchecked */
|
|
#define CLK9600 0xb
|
|
#define CLK19200 0xc
|
|
#define CLK57600 0xd
|
|
|
|
/*
|
|
* Per-port (channel) soft information structure, stored in the driver.
|
|
* This is visible via ioctl()'s.
|
|
*/
|
|
struct si_port {
|
|
volatile struct si_channel *sp_ccb;
|
|
struct tty *sp_tty;
|
|
int sp_pend; /* pending command */
|
|
int sp_last_hi_ip; /* cached DCD */
|
|
int sp_state;
|
|
int sp_active_out; /* callout is open */
|
|
int sp_dtr_wait; /* DTR holddown in hz */
|
|
int sp_delta_overflows;
|
|
u_int sp_wopeners; /* # procs waiting DCD */
|
|
u_char sp_hotchar; /* ldisc specific ASAP char */
|
|
/* Initial state. */
|
|
struct termios sp_iin;
|
|
struct termios sp_iout;
|
|
/* Lock state. */
|
|
struct termios sp_lin;
|
|
struct termios sp_lout;
|
|
#ifdef SI_DEBUG
|
|
int sp_debug; /* debug mask */
|
|
#endif
|
|
};
|
|
|
|
/* sp_state */
|
|
#define SS_CLOSED 0x0000
|
|
#define SS_OPEN 0x0001 /* Port is active */
|
|
/* 0x0002 -- */
|
|
/* 0x0004 -- */
|
|
/* 0x0008 -- */
|
|
/* 0x0010 -- */
|
|
/* 0x0020 -- */
|
|
/* 0x0040 -- */
|
|
/* 0x0080 -- */
|
|
#define SS_LSTART 0x0100 /* lstart timeout pending */
|
|
#define SS_INLSTART 0x0200 /* running an lstart induced t_oproc */
|
|
#define SS_CLOSING 0x0400 /* in the middle of a siclose() */
|
|
/* 0x0800 -- */
|
|
#define SS_WAITWRITE 0x1000
|
|
#define SS_BLOCKWRITE 0x2000
|
|
#define SS_DTR_OFF 0x4000 /* DTR held off */
|
|
|
|
/*
|
|
* Command post flags
|
|
*/
|
|
#define SI_NOWAIT 0x00 /* Don't wait for command */
|
|
#define SI_WAIT 0x01 /* Wait for complete */
|
|
|
|
/*
|
|
* Extensive debugging stuff - manipulated using siconfig(8)
|
|
*/
|
|
#define DBG_ENTRY 0x00000001
|
|
#define DBG_DRAIN 0x00000002
|
|
#define DBG_OPEN 0x00000004
|
|
#define DBG_CLOSE 0x00000008
|
|
#define DBG_READ 0x00000010
|
|
#define DBG_WRITE 0x00000020
|
|
#define DBG_PARAM 0x00000040
|
|
#define DBG_INTR 0x00000080
|
|
#define DBG_IOCTL 0x00000100
|
|
/* 0x00000200 */
|
|
#define DBG_SELECT 0x00000400
|
|
#define DBG_OPTIM 0x00000800
|
|
#define DBG_START 0x00001000
|
|
#define DBG_EXIT 0x00002000
|
|
#define DBG_FAIL 0x00004000
|
|
#define DBG_STOP 0x00008000
|
|
#define DBG_AUTOBOOT 0x00010000
|
|
#define DBG_MODEM 0x00020000
|
|
#define DBG_DOWNLOAD 0x00040000
|
|
#define DBG_LSTART 0x00080000
|
|
#define DBG_POLL 0x00100000
|
|
#define DBG_ALL 0xffffffff
|
|
|
|
/*
|
|
* SI ioctls
|
|
*/
|
|
/*
|
|
* struct for use by Specialix ioctls - used by siconfig(8)
|
|
*/
|
|
typedef struct {
|
|
unsigned char
|
|
sid_port:5, /* 0 - 31 ports per card */
|
|
sid_card:2, /* 0 - 3 cards */
|
|
sid_control:1; /* controlling device (all cards) */
|
|
} sidev_t;
|
|
struct si_tcsi {
|
|
sidev_t tc_dev;
|
|
union {
|
|
int x_int;
|
|
int x_dbglvl;
|
|
} tc_action;
|
|
#define tc_card tc_dev.sid_card
|
|
#define tc_port tc_dev.sid_port
|
|
#define tc_int tc_action.x_int
|
|
#define tc_dbglvl tc_action.x_dbglvl
|
|
};
|
|
|
|
struct si_pstat {
|
|
sidev_t tc_dev;
|
|
union {
|
|
struct si_port x_siport;
|
|
struct si_channel x_ccb;
|
|
struct tty x_tty;
|
|
} tc_action;
|
|
#define tc_siport tc_action.x_siport
|
|
#define tc_ccb tc_action.x_ccb
|
|
#define tc_tty tc_action.x_tty
|
|
};
|
|
|
|
#define IOCTL_MIN 96
|
|
#define TCSIDEBUG _IOW('S', 96, struct si_tcsi) /* Toggle debug */
|
|
#define TCSIRXIT _IOW('S', 97, struct si_tcsi) /* RX int throttle */
|
|
#define TCSIIT _IOW('S', 98, struct si_tcsi) /* TX int throttle */
|
|
/* 99 defunct */
|
|
/* 100 defunct */
|
|
/* 101 defunct */
|
|
/* 102 defunct */
|
|
/* 103 defunct */
|
|
/* 104 defunct */
|
|
#define TCSISTATE _IOWR('S', 105, struct si_tcsi) /* get current state of RTS
|
|
DCD and DTR pins */
|
|
/* 106 defunct */
|
|
#define TCSIPORTS _IOR('S', 107, int) /* Number of ports found */
|
|
#define TCSISDBG_LEVEL _IOW('S', 108, struct si_tcsi) /* equivalent of TCSIDEBUG which sets a
|
|
* particular debug level (DBG_??? bit
|
|
* mask), default is 0xffff */
|
|
#define TCSIGDBG_LEVEL _IOWR('S', 109, struct si_tcsi)
|
|
#define TCSIGRXIT _IOWR('S', 110, struct si_tcsi)
|
|
#define TCSIGIT _IOWR('S', 111, struct si_tcsi)
|
|
/* 112 defunct */
|
|
/* 113 defunct */
|
|
/* 114 defunct */
|
|
/* 115 defunct */
|
|
/* 116 defunct */
|
|
/* 117 defunct */
|
|
|
|
#define TCSISDBG_ALL _IOW('S', 118, int) /* set global debug level */
|
|
#define TCSIGDBG_ALL _IOR('S', 119, int) /* get global debug level */
|
|
|
|
/* 120 defunct */
|
|
/* 121 defunct */
|
|
/* 122 defunct */
|
|
/* 123 defunct */
|
|
#define TCSIMODULES _IOR('S', 124, int) /* Number of modules found */
|
|
|
|
/* Various stats and monitoring hooks per tty device */
|
|
#define TCSI_PORT _IOWR('S', 125, struct si_pstat) /* get si_port */
|
|
#define TCSI_CCB _IOWR('S', 126, struct si_pstat) /* get si_ccb */
|
|
#define TCSI_TTY _IOWR('S', 127, struct si_pstat) /* get tty struct */
|
|
|
|
#define IOCTL_MAX 127
|
|
|
|
#define IS_SI_IOCTL(cmd) ((u_int)((cmd)&0xff00) == ('S'<<8) && \
|
|
(u_int)((cmd)&0xff) >= IOCTL_MIN && \
|
|
(u_int)((cmd)&0xff) <= IOCTL_MAX)
|
|
|
|
#define CONTROLDEV "/dev/si_control"
|