/*
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/*
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* linux/arch/arm/drivers/char/vt-dummy.c
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* linux/arch/arm/drivers/char/vt-dummy.c
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*
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*
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* VT routines
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* VT routines
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*
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*
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* Changelog:
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* Changelog:
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* 05-Sep-1996 RMK Fixed race condition between VT switch & initialisation
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* 05-Sep-1996 RMK Fixed race condition between VT switch & initialisation
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* 08-Sep-1996 RMK Adapted Brad Pepers (ramparts@agt.net) console buffering code
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* 08-Sep-1996 RMK Adapted Brad Pepers (ramparts@agt.net) console buffering code
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* (vt_put_char & vt_flush_chars).
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* (vt_put_char & vt_flush_chars).
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* 20-Sep-1996 RMK Cut down version for StrongARM eval board.
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* 20-Sep-1996 RMK Cut down version for StrongARM eval board.
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*/
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*/
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#include <linux/sched.h>
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#include <linux/sched.h>
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#include <linux/tty.h>
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#include <linux/tty.h>
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#include <linux/kd.h>
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#include <linux/kd.h>
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#include <linux/errno.h>
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#include <linux/errno.h>
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#include <linux/malloc.h>
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#include <linux/malloc.h>
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#include <linux/mm.h>
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#include <linux/mm.h>
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#include <linux/tty.h>
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#include <linux/tty.h>
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#include <linux/major.h>
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#include <linux/major.h>
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#include <asm/segment.h>
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#include <asm/segment.h>
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#include "kbd_kern.h"
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#include "kbd_kern.h"
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#include "vt_kern.h"
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#include "vt_kern.h"
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/*
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/*
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* VCD functions
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* VCD functions
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*/
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*/
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extern int vcd_init (struct vt *, int kmallocok, unsigned long *kmem);
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extern int vcd_init (struct vt *, int kmallocok, unsigned long *kmem);
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extern int vcd_ioctl (struct vt *, int cmd, unsigned long arg);
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extern int vcd_ioctl (struct vt *, int cmd, unsigned long arg);
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extern unsigned long vcd_pre_init (unsigned long kmem, struct vt *);
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extern unsigned long vcd_pre_init (unsigned long kmem, struct vt *);
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static int vt_refcount;
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static int vt_refcount;
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static struct tty_driver vt_driver;
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static struct tty_driver vt_driver;
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static struct tty_struct *vt_table[MAX_NR_CONSOLES];
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static struct tty_struct *vt_table[MAX_NR_CONSOLES];
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static struct termios *vt_termios[MAX_NR_CONSOLES];
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static struct termios *vt_termios[MAX_NR_CONSOLES];
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static struct termios *vt_termios_locked[MAX_NR_CONSOLES];
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static struct termios *vt_termios_locked[MAX_NR_CONSOLES];
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int shift_state = 0;
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int shift_state = 0;
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struct vt_data vtdata;
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struct vt_data vtdata;
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struct vt vt_con_data[1];
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struct vt vt_con_data[1];
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extern void vt_do_blankscreen (int nopowersave);
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extern void vt_do_blankscreen (int nopowersave);
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extern void vt_do_unblankscreen (void);
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extern void vt_do_unblankscreen (void);
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/*
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/*
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* last_console is the last used console
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* last_console is the last used console
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*/
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*/
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struct vt *last_console;
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struct vt *last_console;
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int vt_deallocate (int arg)
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int vt_deallocate (int arg)
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{
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{
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return 0;
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return 0;
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}
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}
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void vt_pokeblankedconsole (void)
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void vt_pokeblankedconsole (void)
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{
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{
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}
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}
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/*
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/*
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* for tty_io.c
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* for tty_io.c
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*/
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*/
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void vt_do_unblankscreen (void)
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void vt_do_unblankscreen (void)
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{
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{
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}
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}
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int sel_loadlut (const unsigned long arg)
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int sel_loadlut (const unsigned long arg)
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{
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{
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return 0;
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return 0;
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}
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}
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int set_selection (const unsigned long arg, struct tty_struct *tty)
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int set_selection (const unsigned long arg, struct tty_struct *tty)
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{
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{
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return 0;
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return 0;
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}
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}
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int paste_selection (struct tty_struct *tty)
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int paste_selection (struct tty_struct *tty)
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{
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{
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return 0;
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return 0;
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}
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}
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/*
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/*
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* for panic.c
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* for panic.c
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*/
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*/
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void do_unblank_screen (void)
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void do_unblank_screen (void)
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{
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{
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}
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}
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static int vt_open (struct tty_struct *tty, struct file *filp)
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static int vt_open (struct tty_struct *tty, struct file *filp)
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{
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{
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return 0;
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return 0;
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}
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}
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static int vt_write (struct tty_struct *tty, int from_user,
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static int vt_write (struct tty_struct *tty, int from_user,
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const unsigned char *buf, int count)
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const unsigned char *buf, int count)
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{
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{
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return vcd_write (NULL, from_user, buf, count);
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return vcd_write (NULL, from_user, buf, count);
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}
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}
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static void vt_put_char (struct tty_struct *tty, unsigned char ch)
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static void vt_put_char (struct tty_struct *tty, unsigned char ch)
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{
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{
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vcd_write (NULL, 0, &ch, 1);
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vcd_write (NULL, 0, &ch, 1);
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}
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}
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static int vt_write_room (struct tty_struct *tty)
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static int vt_write_room (struct tty_struct *tty)
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{
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{
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return 4096;
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return 4096;
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}
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}
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static int vt_chars_in_buffer (struct tty_struct *tty)
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static int vt_chars_in_buffer (struct tty_struct *tty)
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{
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{
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return 0;
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return 0;
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}
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}
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static int vt_ioctl (struct tty_struct *tty, struct file *filp,
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static int vt_ioctl (struct tty_struct *tty, struct file *filp,
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unsigned int cmd, unsigned long arg)
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unsigned int cmd, unsigned long arg)
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{
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{
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struct vt *vt = tty->driver_data;
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struct vt *vt = tty->driver_data;
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int perm;
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int perm;
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if (!vt_allocated (vt)) /* impossible ? */
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if (!vt_allocated (vt)) /* impossible ? */
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return -ENOIOCTLCMD;
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return -ENOIOCTLCMD;
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/*
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/*
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* To have permissions to do most of the vt ioctls, we either
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* To have permissions to do most of the vt ioctls, we either
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* have to be the owner of the tty, or super-user.
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* have to be the owner of the tty, or super-user.
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*/
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*/
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perm = 0;
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perm = 0;
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if (current->tty == tty || suser ())
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if (current->tty == tty || suser ())
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perm = 1;
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perm = 1;
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#define PERM if (!perm) return -EPERM
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#define PERM if (!perm) return -EPERM
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switch (cmd) {
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switch (cmd) {
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case KDGETMODE:
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case KDGETMODE:
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case KDSETMODE:
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case KDSETMODE:
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case VT_GETMODE:
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case VT_GETMODE:
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case VT_SETMODE:
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case VT_SETMODE:
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case VT_GETSTATE:
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case VT_GETSTATE:
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case VT_OPENQRY:
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case VT_OPENQRY:
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case VT_ACTIVATE:
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case VT_ACTIVATE:
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case VT_WAITACTIVE:
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case VT_WAITACTIVE:
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case VT_RELDISP:
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case VT_RELDISP:
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case VT_GETSCRINFO:
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case VT_GETSCRINFO:
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return -EINVAL;
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return -EINVAL;
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case VT_RESIZE:
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case VT_RESIZE:
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case KIOCSOUND:
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case KIOCSOUND:
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case KDMKTONE:
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case KDMKTONE:
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PERM;
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PERM;
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case VT_DISALLOCATE:
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case VT_DISALLOCATE:
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return 0;
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return 0;
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case KDMAPDISP:
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case KDMAPDISP:
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case KDUNMAPDISP:
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case KDUNMAPDISP:
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case KDSKBMODE:
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case KDSKBMODE:
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case KDSKBMETA:
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case KDSKBMETA:
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case KDSETKEYCODE:
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case KDSETKEYCODE:
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case KDSKBENT:
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case KDSKBENT:
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case KDSKBSENT:
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case KDSKBSENT:
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case KDSKBDIACR:
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case KDSKBDIACR:
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case KDSKBLED:
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case KDSKBLED:
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case KDSETLED:
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case KDSETLED:
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case KDSIGACCEPT:
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case KDSIGACCEPT:
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case KDGKBTYPE:
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case KDGKBTYPE:
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case KDADDIO:
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case KDADDIO:
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case KDDELIO:
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case KDDELIO:
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case KDENABIO:
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case KDENABIO:
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case KDDISABIO:
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case KDDISABIO:
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case KDGKBMODE:
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case KDGKBMODE:
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case KDGKBMETA:
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case KDGKBMETA:
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case KDGETKEYCODE:
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case KDGETKEYCODE:
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case KDGKBENT:
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case KDGKBENT:
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case KDGKBSENT:
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case KDGKBSENT:
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case KDGKBDIACR:
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case KDGKBDIACR:
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case KDGKBLED:
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case KDGKBLED:
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case KDGETLED:
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case KDGETLED:
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return -EINVAL;
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return -EINVAL;
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case VT_SETPALETTE:
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case VT_SETPALETTE:
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case PIO_FONT:
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case PIO_FONT:
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case PIO_SCRNMAP:
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case PIO_SCRNMAP:
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case PIO_UNISCRNMAP:
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case PIO_UNISCRNMAP:
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case PIO_UNIMAPCLR:
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case PIO_UNIMAPCLR:
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case PIO_UNIMAP:
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case PIO_UNIMAP:
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PERM;
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PERM;
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case VT_GETPALETTE:
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case VT_GETPALETTE:
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case GIO_FONT:
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case GIO_FONT:
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case GIO_SCRNMAP:
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case GIO_SCRNMAP:
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case GIO_UNISCRNMAP:
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case GIO_UNISCRNMAP:
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case GIO_UNIMAP:
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case GIO_UNIMAP:
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return vcd_ioctl (vt, cmd, arg);
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return vcd_ioctl (vt, cmd, arg);
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}
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}
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return -ENOIOCTLCMD;
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return -ENOIOCTLCMD;
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}
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}
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static void vt_dummy (struct tty_struct *tty)
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static void vt_dummy (struct tty_struct *tty)
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{
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{
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}
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}
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int vcs_init(void)
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int vcs_init(void)
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{
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{
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return 0;
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return 0;
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}
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}
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unsigned long vt_pre_init (unsigned long kmem)
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unsigned long vt_pre_init (unsigned long kmem)
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{
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{
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kmem = vcd_pre_init (kmem, NULL);
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kmem = vcd_pre_init (kmem, NULL);
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memset (vt_con_data, 0, sizeof (vt_con_data));
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memset (vt_con_data, 0, sizeof (vt_con_data));
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vtdata.blanked = NULL;
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vtdata.blanked = NULL;
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vtdata.fgconsole = vt_con_data;
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vtdata.fgconsole = vt_con_data;
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vt_con_data->tty = &vt_table[0];
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vt_con_data->tty = &vt_table[0];
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vt_con_data->num = 1;
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vt_con_data->num = 1;
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return kmem;
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return kmem;
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}
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}
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/*
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/*
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* This is the post initialisation. We have kmalloc setup so we can use it...
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* This is the post initialisation. We have kmalloc setup so we can use it...
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*/
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*/
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void vt_post_init (void)
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void vt_post_init (void)
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{
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{
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memset (&vt_driver, 0, sizeof (struct tty_driver));
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memset (&vt_driver, 0, sizeof (struct tty_driver));
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vt_driver.magic = TTY_DRIVER_MAGIC;
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vt_driver.magic = TTY_DRIVER_MAGIC;
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vt_driver.name = "tty";
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vt_driver.name = "tty";
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vt_driver.name_base = 1;
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vt_driver.name_base = 1;
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vt_driver.major = TTY_MAJOR;
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vt_driver.major = TTY_MAJOR;
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vt_driver.minor_start = 1;
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vt_driver.minor_start = 1;
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vt_driver.num = MAX_NR_CONSOLES;
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vt_driver.num = MAX_NR_CONSOLES;
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vt_driver.type = TTY_DRIVER_TYPE_CONSOLE;
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vt_driver.type = TTY_DRIVER_TYPE_CONSOLE;
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vt_driver.init_termios = tty_std_termios;
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vt_driver.init_termios = tty_std_termios;
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vt_driver.flags = TTY_DRIVER_REAL_RAW;
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vt_driver.flags = TTY_DRIVER_REAL_RAW;
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vt_driver.refcount = &vt_refcount;
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vt_driver.refcount = &vt_refcount;
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vt_driver.table = vt_table;
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vt_driver.table = vt_table;
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vt_driver.termios = vt_termios;
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vt_driver.termios = vt_termios;
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vt_driver.termios_locked = vt_termios_locked;
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vt_driver.termios_locked = vt_termios_locked;
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vt_driver.open = vt_open;
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vt_driver.open = vt_open;
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vt_driver.write = vt_write;
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vt_driver.write = vt_write;
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vt_driver.put_char = vt_put_char;
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vt_driver.put_char = vt_put_char;
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vt_driver.flush_chars = vt_dummy;
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vt_driver.flush_chars = vt_dummy;
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vt_driver.write_room = vt_write_room;
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vt_driver.write_room = vt_write_room;
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vt_driver.chars_in_buffer = vt_chars_in_buffer;
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vt_driver.chars_in_buffer = vt_chars_in_buffer;
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vt_driver.ioctl = vt_ioctl;
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vt_driver.ioctl = vt_ioctl;
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vt_driver.stop = vt_dummy;
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vt_driver.stop = vt_dummy;
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vt_driver.start = vt_dummy;
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vt_driver.start = vt_dummy;
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vt_driver.throttle = vt_dummy;
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vt_driver.throttle = vt_dummy;
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vt_driver.unthrottle = vt_dummy;
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vt_driver.unthrottle = vt_dummy;
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|
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if (tty_register_driver (&vt_driver))
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if (tty_register_driver (&vt_driver))
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panic ("Couldn't register console driver");
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panic ("Couldn't register console driver");
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}
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}
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