X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/91447636331957f3d9b5ca5b508f07c526b0074d..b0d623f7f2ae71ed96e60569f61f9a9a27016e80:/bsd/dev/ppc/cons.c diff --git a/bsd/dev/ppc/cons.c b/bsd/dev/ppc/cons.c index b9d966909..207ee03ae 100644 --- a/bsd/dev/ppc/cons.c +++ b/bsd/dev/ppc/cons.c @@ -1,23 +1,29 @@ /* - * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * - * The contents of this file constitute Original Code as defined in and - * are subject to the Apple Public Source License Version 1.1 (the - * "License"). You may not use this file except in compliance with the - * License. Please obtain a copy of the License at - * http://www.apple.com/publicsource and read it before using this file. + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. * - * This Original Code and all software distributed under the License are - * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the - * License for the specific language governing rights and limitations - * under the License. + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. * - * @APPLE_LICENSE_HEADER_END@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * Copyright (c) 1987, 1988 NeXT, Inc. @@ -40,234 +46,94 @@ #include #include #include -#include - -struct tty cons; -struct tty *constty; /* current console device */ +#include -/*ARGSUSED*/ -int -consopen(dev, flag, devtype, pp) - dev_t dev; - int flag, devtype; - struct proc *pp; -{ - dev_t device; - boolean_t funnel_state; - int error; - - funnel_state = thread_funnel_set(kernel_flock, TRUE); +struct tty *constty; /* current console device */ - if (constty) - device = constty->t_dev; - else - device = cons.t_dev; - error = (*cdevsw[major(device)].d_open)(device, flag, devtype, pp); - thread_funnel_set(kernel_flock, funnel_state); +/* + * The km driver supplied the default console device for the systems + * (usually a raw frame buffer driver, but potentially a serial driver). + */ +extern struct tty *km_tty[1]; - return(error); +static dev_t +cndev(void) +{ + if (constty) + return constty->t_dev; + else + return km_tty[0]->t_dev; } /*ARGSUSED*/ int -consclose(dev, flag, mode, pp) - dev_t dev; - int flag, mode; - struct proc *pp; +consopen(__unused dev_t dev, int flag, int devtype, struct proc *pp) { - dev_t device; - boolean_t funnel_state; - int error; - - funnel_state = thread_funnel_set(kernel_flock, TRUE); - if (constty) - device = constty->t_dev; - else - device = cons.t_dev; - error = (*cdevsw[major(device)].d_close)(device, flag, mode, pp); - thread_funnel_set(kernel_flock, funnel_state); - - return(error); - - + dev = cndev(); + return ((*cdevsw[major(dev)].d_open)(dev, flag, devtype, pp)); } + /*ARGSUSED*/ int -consread(dev, uio, ioflag) - dev_t dev; - struct uio *uio; - int ioflag; +consclose(__unused dev_t dev, int flag, int mode, struct proc *pp) { - dev_t device; - boolean_t funnel_state; - int error; - - funnel_state = thread_funnel_set(kernel_flock, TRUE); - if (constty) - device = constty->t_dev; - else - device = cons.t_dev; - error = (*cdevsw[major(device)].d_read)(device, uio, ioflag); - thread_funnel_set(kernel_flock, funnel_state); - - return(error); + dev = cndev(); + return ((*cdevsw[major(dev)].d_close)(dev, flag, mode, pp)); } + /*ARGSUSED*/ int -conswrite(dev, uio, ioflag) - dev_t dev; - struct uio *uio; - int ioflag; +consread(__unused dev_t dev, struct uio *uio, int ioflag) { - dev_t device; - boolean_t funnel_state; - int error; - - funnel_state = thread_funnel_set(kernel_flock, TRUE); - if (constty) - device = constty->t_dev; - else - device = cons.t_dev; - error = (*cdevsw[major(device)].d_write)(device, uio, ioflag); - thread_funnel_set(kernel_flock, funnel_state); - - return(error); + dev = cndev(); + return ((*cdevsw[major(dev)].d_read)(dev, uio, ioflag)); } + /*ARGSUSED*/ int -consioctl(dev, cmd, addr, flag, p) - dev_t dev; - int cmd; - caddr_t addr; - int flag; - struct proc *p; +conswrite(__unused dev_t dev, struct uio *uio, int ioflag) { - dev_t device; - boolean_t funnel_state; - int error; + dev = cndev(); + return ((*cdevsw[major(dev)].d_write)(dev, uio, ioflag)); +} - funnel_state = thread_funnel_set(kernel_flock, TRUE); - if (constty) - device = constty->t_dev; - else - device = cons.t_dev; +/*ARGSUSED*/ +int +consioctl(__unused dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p) +{ + dev = cndev(); +#if 0 /* * Superuser can always use this to wrest control of console * output from the "virtual" console. + * + * XXX Unfortunately, this code doesn't do what the author thougt + * XXX it did; use of the console device, a TIOCCONS would always + * XXX disassociate the console from a virtual terminal and send + * XXX it back to the fake tty. */ - if (cmd == TIOCCONS && constty) { - error = proc_suser(p); - if (error) { - goto out; + if ((unsigned) cmd == TIOCCONS && constty) { + int error = proc_suser(p); + if (!error) { + constty = NULL; } - constty = NULL; - error = 0; - goto out; + return(error); } - error = (*cdevsw[major(device)].d_ioctl)(device, cmd, addr, flag, p); -out: - thread_funnel_set(kernel_flock, funnel_state); - - return(error); -} - -/*ARGSUSED*/ -/* called with funnel held */ -int -consselect(dev, flag, wql, p) - dev_t dev; - int flag; - void *wql; - struct proc *p; -{ - dev_t device; +#endif /* 0 */ - if (constty) - device = constty->t_dev; - else - device = cons.t_dev; - return ((*cdevsw[major(device)].d_select)(device, flag, wql, p)); + return ((*cdevsw[major(dev)].d_ioctl)(dev, cmd, addr, flag, p)); } -int -cons_getc() -{ - dev_t device; - boolean_t funnel_state; - int error; - - funnel_state = thread_funnel_set(kernel_flock, TRUE); - if (constty) - device = constty->t_dev; - else - device = cons.t_dev; - error = (*cdevsw[major(device)].d_getc)(device); - thread_funnel_set(kernel_flock, funnel_state); - - return(error); -} /*ARGSUSED*/ +/* called with funnel held */ int -cons_putc(c) - char c; +consselect(__unused dev_t dev, int flag, void *wql, struct proc *p) { - dev_t device; - boolean_t funnel_state; - int error; - - funnel_state = thread_funnel_set(kernel_flock, TRUE); - if (constty) - device = constty->t_dev; - else - device = cons.t_dev; - error = (*cdevsw[major(device)].d_putc)(device, c); - thread_funnel_set(kernel_flock, funnel_state); - - return(error); -} - -/* - * Write message to console; create an alert panel if no text-type window - * currently exists. Caller must call alert_done() when finished. - * The height and width arguments are not used; they are provided for - * compatibility with the 68k version of alert(). - */ -int -alert( - int width, - int height, - const char *title, - const char *msg, - int p1, - int p2, - int p3, - int p4, - int p5, - int p6, - int p7, - int p8) -{ - char smsg[200]; - - sprintf(smsg, msg, p1, p2, p3, p4, p5, p6, p7, p8); -#if FIXME /* [ */ - /* DoAlert(title, smsg); */ -#else - printf("%s\n",smsg); -#endif /* FIXME ] */ - - return 0; -} - -int -alert_done() -{ - /* DoRestore(); */ - return 0; + dev = cndev(); + return ((*cdevsw[major(dev)].d_select)(dev, flag, wql, p)); } -