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/*
* IBM/3270 Driver -- Copyright (C) 2000 UTS Global LLC
*
* tubio.h -- All-Purpose header file
*
*
*
*
*
* Author: Richard Hitt
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/version.h>
#include <linux/major.h>
#ifndef IBM_TTY3270_MAJOR
# define IBM_TTY3270_MAJOR 212
#endif /* IBM_TTY3270_MAJOR */
#ifndef IBM_FS3270_MAJOR
# define IBM_FS3270_MAJOR 213
#endif /* IBM_FS3270_MAJOR */
#include <linux/slab.h>
#include <asm/irq.h>
#include <asm/io.h>
#include <linux/console.h>
#include <linux/interrupt.h>
#include <asm/ebcdic.h>
#include <asm/uaccess.h>
#include <linux/proc_fs.h>
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0))
#include <linux/devfs_fs_kernel.h>
#endif
#define TUB(x) (('3'<<8)|(x))
#define TUBICMD TUB(3)
#define TUBOCMD TUB(4)
#define TUBGETI TUB(7)
#define TUBGETO TUB(8)
#define TUBSETMOD TUB(12)
#define TUBGETMOD TUB(13)
#define TIOPOLL TUB(32)
#define TIOPOKE TUB(33)
#define TIONPOKE TUB(34)
#define TIOTNORM TUB(35)
/* Local Channel Commands */
#define TC_WRITE 0x01
#define TC_EWRITE 0x05
#define TC_READMOD 0x06
#define TC_EWRITEA 0x0d
#define TC_WRITESF 0x11
/* Buffer Control Orders */
#define TO_SF 0x1d
#define TO_SBA 0x11
#define TO_IC 0x13
#define TO_PT 0x05
#define TO_RA 0x3c
#define TO_SFE 0x29
#define TO_EUA 0x12
#define TO_MF 0x2c
#define TO_SA 0x28
/* Field Attribute Bytes */
#define TF_INPUT 0x40 /* Visible input */
#define TF_INPUTN 0x4c /* Invisible input */
#define TF_INMDT 0xc1 /* Visible, Set-MDT */
#define TF_LOG 0x60
#define TF_STAT 0x60
/* Character Attribute Bytes */
#define TAT_RESET 0x00
#define TAT_FIELD 0xc0
#define TAT_EXTHI 0x41
#define TAT_COLOR 0x42
#define TAT_CHARS 0x43
#define TAT_TRANS 0x46
/* Reset value */
#define TAR_RESET 0x00
/* Color values */
#define TAC_BLUE 0xf1
#define TAC_RED 0xf2
#define TAC_PINK 0xf3
#define TAC_GREEN 0xf4
#define TAC_TURQ 0xf5
#define TAC_YELLOW 0xf6
#define TAC_WHITE 0xf7
#define TAC_DEFAULT 0x00
/* Write Control Characters */
#define TW_NONE 0x40 /* No particular action */
#define TW_KR 0xc2 /* Keyboard restore */
#define TW_PLUSALARM 0x04 /* Add this bit for alarm */
/* Attention-ID (AID) Characters */
#define TA_CLEAR 0x6d
#define TA_PA2 0x6e
#define TA_ENTER 0x7d
/* more to come */
#define MIN(a, b) ((a) < (b)? (a): (b))
#define TUB_BUFADR(adr, cpp) \
tty3270_tub_bufadr(tubp, adr, cpp)
#define TUB_EBCASC(addr, nr) codepage_convert(tub_ebcasc, addr, nr)
#define TUB_ASCEBC(addr, nr) codepage_convert(tub_ascebc, addr, nr)
/*
*
* General global values for the tube driver
*
*/
enum tubmode {
TBM_LN, /* Line mode */
TBM_FS, /* Fullscreen mode */
TBM_FSLN /* Line mode shelled out of fullscreen */
};
enum tubstat { /* normal-mode status */
TBS_RUNNING, /* none of the following */
TBS_MORE, /* timed "MORE..." in status */
TBS_HOLD /* untimed "HOLDING" in status */
};
enum tubcmd { /* normal-mode actions to do */
TBC_CONOPEN, /* Erase-write the console */
TBC_OPEN, /* Open the tty screen */
TBC_UPDATE, /* Add lines to the log, clear cmdline */
TBC_UPDLOG, /* Add lines to log */
TBC_KRUPDLOG, /* Add lines to log, reset kbd */
TBC_CLEAR, /* Build screen from scratch */
TBC_CLRUPDLOG, /* Do log & status, not cmdline */
TBC_UPDSTAT, /* Do status update only */
TBC_CLRINPUT, /* Clear input area only */
TBC_UPDINPUT /* Update input area only */
};
enum tubwhat { /* echo what= proc actions */
TW_BOGUS, /* Nothing at all */
TW_CONFIG /* Output configuration info */
};
#define TUBMAXMINS 256
#define TUB_DEV MKDEV(IBM_FS3270_MAJ, 0) /* Generic /dev/3270/tub */
#define _GEOM_ROWS 24
#define _GEOM_COLS 80
#define GEOM_ROWS (tubp->geom_rows)
#define GEOM_COLS (tubp->geom_cols)
#define GEOM_MAXROWS 127
#define GEOM_MAXCOLS 132
#define GEOM_INPLEN (GEOM_COLS * 2 - 20)
#define GEOM_MAXINPLEN (GEOM_MAXCOLS * 2 - 20)
#define GEOM_INPUT (GEOM_COLS * (GEOM_ROWS - 2) - 1) /* input atr posn */
#define GEOM_STAT (GEOM_INPUT + 1 + GEOM_INPLEN)
#define GEOM_LOG (GEOM_COLS * GEOM_ROWS - 1) /* log atr posn */
#define TS_RUNNING "Linux Running "
#define TS_MORE "Linux More... "
#define DEFAULT_SCROLLTIME 5
#define TS_HOLD "Linux Holding "
/* data length used by tty3270_set_status_area: SBA (3), SF (2), data */
#define TS_LENGTH (sizeof TS_RUNNING + 3 + 2)
typedef struct {
int aid; /* What-to-do flags */
char *string; /* Optional input string */
} aid_t;
#define AIDENTRY(ch, tubp) (&((tubp)->tty_aid[(ch) & 0x3f]))
/* For TUBGETMOD and TUBSETMOD. Should include. */
typedef struct tubiocb {
short model;
short line_cnt;
short col_cnt;
short pf_cnt;
short re_cnt;
short map;
} tubiocb_t;
/* Flags that go in int aid, above */
#define TA_CLEARKEY 0x01 /* Key does hardware CLEAR */
#define TA_SHORTREAD 0x02 /* Key does hardware shortread */
/* If both are off, key does hardware Read Modified. */
#define TA_DOENTER 0x04 /* Treat key like ENTER */
#define TA_DOSTRING 0x08 /* Use string and ENTER */
#define TA_DOSTRINGD 0x10 /* Display string & set MDT */
#define TA_CLEARLOG 0x20 /* Make key cause clear of log */
/*
* Tube driver buffer control block
*/
typedef struct bcb_s {
char *bc_buf; /* Pointer to buffer */
int bc_len; /* Length of buffer */
int bc_cnt; /* Count of bytes buffered */
int bc_wr; /* Posn to write next byte into */
int bc_rd; /* Posn to read next byte from */
} bcb_t;
typedef struct tub_s {
int minor;
int irq;
int irqrc;
int devno;
int geom_rows;
int geom_cols;
tubiocb_t tubiocb;
int lnopen;
int fsopen;
int icmd;
int ocmd;
devstat_t devstat;
ccw1_t rccw;
ccw1_t wccw;
void *wbuf;
int cswl;
void (*intv)(struct tub_s *, devstat_t *);
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0))
struct wait_queue *waitq;
#else
wait_queue_head_t waitq;
#endif
int dstat;
sense_t sense;
enum tubmode mode;
enum tubstat stat;
enum tubcmd cmd;
int flags; /* See below for values */
struct tq_struct tqueue;
/* Stuff for fs-driver support */
pid_t fs_pid; /* Pid if TBM_FS */
/* Stuff for tty-driver support */
struct tty_struct *tty;
char tty_input[GEOM_MAXINPLEN]; /* tty input area */
int tty_inattr; /* input-area field attribute */
#define TTY_OUTPUT_SIZE 1024
bcb_t tty_bcb; /* Output buffer control info */
int tty_oucol; /* Kludge */
int tty_nextlogx; /* next screen-log position */
int tty_scrolltime; /* scrollforward wait time, sec */
struct timer_list tty_stimer; /* timer for scrolltime */
aid_t tty_aid[64]; /* Aid descriptors */
int tty_aidinit; /* Boolean */
int tty_showaidx; /* Last aid x to set_aid */
int tty_14bitadr; /* 14-bit bufadrs okay */
#define MAX_TTY_ESCA 24 /* Set-Attribute-Order array */
char tty_esca[MAX_TTY_ESCA]; /* SA array */
int tty_escx; /* Current index within it */
/* For command recall --- */
char *(*tty_rclbufs)[]; /* Array of ptrs to recall bufs */
int tty_rclk; /* Size of array tty_rclbufs */
int tty_rclp; /* Index for most-recent cmd */
int tty_rclb; /* Index for backscrolling */
/* Work area to contain the hardware write stream */
char (*ttyscreen)[]; /* ptr to data stream area */
int ttyscreenl; /* its length */
ccw1_t ttyccw;
} tub_t;
/* values for flags: */
#define TUB_WORKING 0x0001
#define TUB_BHPENDING 0x0002
#define TUB_RDPENDING 0x0004
#define TUB_ALARM 0x0008
#define TUB_SCROLLTIMING 0x0010
#define TUB_ATTN 0x0020
#define TUB_IACTIVE 0x0040
#define TUB_SIZED 0x0080
#define TUB_EXPECT_DE 0x0100
#define TUB_UNSOL_DE 0x0200
#define TUB_OPEN_STET 0x0400 /* No screen clear on open */
#define TUB_UE_BUSY 0x0800
#define TUB_INPUT_HACK 0x1000 /* Early init of command line */
#ifdef CONFIG_TN3270_CONSOLE
/*
* Extra stuff for 3270 console support
*/
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0))
#define S390_CONSOLE_DEV MKDEV(TTY_MAJOR, 64)
#else
#define S390_CONSOLE_DEV MKDEV(TTYAUX_MAJOR, 1)
#endif
extern int tub3270_con_devno;
extern char (*tub3270_con_output)[];
extern int tub3270_con_outputl;
extern int tub3270_con_ouwr;
extern int tub3270_con_oucount;
extern int tub3270_con_irq;
extern tub_t *tub3270_con_tubp;
extern struct tty_driver tty3270_con_driver;
#endif /* CONFIG_TN3270_CONSOLE */
extern int tubnummins;
extern tub_t *(*tubminors)[TUBMAXMINS];
extern tub_t *(*(*tubirqs)[256])[256];
extern unsigned char tub_ascebc[256];
extern unsigned char tub_ebcasc[256];
extern unsigned char tub_ebcgraf[64];
extern int tubdebug;
extern int fs3270_major;
extern int tty3270_major;
extern int tty3270_proc_misc;
extern enum tubwhat tty3270_proc_what;
extern struct tty_driver tty3270_driver;
#ifdef CONFIG_DEVFS_FS
extern devfs_handle_t fs3270_devfs_dir;
extern void fs3270_devfs_register(tub_t *);
extern void fs3270_devfs_unregister(tub_t *);
#endif
#ifndef spin_trylock_irqsave
#define spin_trylock_irqsave(lock, flags) \
({ \
int success; \
__save_flags(flags); \
__cli(); \
success = spin_trylock(lock); \
if (success == 0) \
__restore_flags(flags); \
success; \
})
#endif /* if not spin_trylock_irqsave */
#ifndef s390irq_spin_trylock_irqsave
#define s390irq_spin_trylock_irqsave(irq, flags) \
spin_trylock_irqsave(&(ioinfo[irq]->irq_lock), flags)
#endif /* if not s390irq_spin_trylock_irqsave */
#define TUBLOCK(irq, flags) \
s390irq_spin_lock_irqsave(irq, flags)
#define TUBTRYLOCK(irq, flags) \
s390irq_spin_trylock_irqsave(irq, flags)
#define TUBUNLOCK(irq, flags) \
s390irq_spin_unlock_irqrestore(irq, flags)
/*
* Find tub_t * given fullscreen device's irq (subchannel number)
*/
extern tub_t *tubfindbyirq(int);
#define IRQ2TUB(irq) tubfindbyirq(irq)
/*
* Find tub_t * given fullscreen device's inode pointer
* This algorithm takes into account /dev/3270/tub.
*/
extern inline tub_t *INODE2TUB(struct inode *ip)
{
unsigned int minor = MINOR(ip->i_rdev);
tub_t *tubp = NULL;
if (minor == 0 && current->tty != NULL) {
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0))
#ifdef CONFIG_TN3270_CONSOLE
if (tub3270_con_tubp != NULL &&
current->tty->device == S390_CONSOLE_DEV)
minor = tub3270_con_tubp->minor;
else
#endif
#endif
if (MAJOR(current->tty->device) == IBM_TTY3270_MAJOR)
minor = MINOR(current->tty->device);
}
if (minor <= tubnummins && minor > 0)
tubp = (*tubminors)[minor];
return tubp;
}
/*
* Find tub_t * given non-fullscreen (tty) device's tty_struct pointer
*/
extern inline tub_t *TTY2TUB(struct tty_struct *tty)
{
unsigned int minor = MINOR(tty->device);
tub_t *tubp = NULL;
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0))
#ifdef CONFIG_TN3270_CONSOLE
if (tty->device == S390_CONSOLE_DEV)
tubp = tub3270_con_tubp;
else
#endif
#endif
if (minor <= tubnummins && minor > 0)
tubp = (*tubminors)[minor];
return tubp;
}
extern void tub_inc_use_count(void);
extern void tub_dec_use_count(void);
extern int tub3270_movedata(bcb_t *, bcb_t *, int);
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0))
extern int tubmakemin(int, dev_info_t *);
#else
extern int tubmakemin(int, s390_dev_info_t *);
#endif
extern int tub3270_con_copy(tub_t *);
extern int tty3270_rcl_init(tub_t *);
extern int tty3270_rcl_set(tub_t *, char *, int);
extern void tty3270_rcl_fini(tub_t *);
extern int tty3270_rcl_get(tub_t *, char *, int, int);
extern void tty3270_rcl_put(tub_t *, char *, int);
extern void tty3270_rcl_sync(tub_t *);
extern void tty3270_rcl_purge(tub_t *);
extern int tty3270_rcl_resize(tub_t *, int);
extern int tty3270_size(tub_t *, long *);
extern int tty3270_aid_init(tub_t *);
extern void tty3270_aid_fini(tub_t *);
extern void tty3270_aid_reinit(tub_t *);
extern int tty3270_aid_get(tub_t *, int, int *, char **);
extern int tty3270_aid_set(tub_t *, char *, int);
extern int tty3270_build(tub_t *);
extern void tty3270_scl_settimer(tub_t *);
extern void tty3270_scl_resettimer(tub_t *);
extern int tty3270_scl_set(tub_t *, char *, int);
extern int tty3270_scl_init(tub_t *tubp);
extern void tty3270_scl_fini(tub_t *tubp);
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