osfmk/ppc/POWERMAC/serial_io.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * @OSF_COPYRIGHT@
  27  */
  28 /*
  29  * @APPLE_FREE_COPYRIGHT@
  30  */
  31
  32
  33 #include <device/device_types.h>
  34 #include <mach_kdp.h>
  35
  36 /*
  37  *      Console is on the Printer Port (chip channel 0)
  38  *      Debugger is on the Modem Port (chip channel 1)
  39  */
  40
  41 #define CONSOLE_PORT    1
  42
  43 struct scc_tty {
  44         char *          t_addr;         /* device pointer */
  45         int             t_dev;          /* device number */
  46         int             t_ispeed;       /* input speed */
  47         int             t_ospeed;       /* output speed */
  48         char            t_breakc;       /* character to deliver when 'break'
  49                                            condition received */
  50         int             t_flags;        /* mode flags */
  51         int             t_state;        /* current state */
  52         int             t_line;         /* fake line discipline number,
  53                                            for old drivers - always 0 */
  54         int             t_outofband;    /* current out-of-band events */
  55         int             t_outofbandarg; /* arg to first out-of-band event */
  56         int             t_nquoted;      /* number of quoted chars in inq */
  57         int             t_hiwater;      /* baud-rate limited high water mark */
  58         int             t_lowater;      /* baud-rate limited low water mark */
  59 };
  60 typedef struct scc_tty  *scc_tty_t;
  61
  62 /*
  63  * function declarations for performing serial i/o
  64  * other functions below are declared in kern/misc_protos.h
  65  *    cnputc, cngetc, cnmaygetc
  66  */
  67
  68 void initialize_serial(caddr_t scc_phys_base);
  69
  70 extern int              scc_probe(void);
  71
  72 #if 0
  73 extern int              scc_open(
  74                                 dev_t           dev,
  75                                 dev_mode_t      flag,
  76                                 io_req_t        ior);
  77
  78 extern void             scc_close(
  79                                 dev_t           dev);
  80
  81 extern int              scc_read(
  82                                 dev_t           dev,
  83                                 io_req_t        ior);
  84
  85 extern io_return_t      scc_write(
  86                                 dev_t           dev,
  87                                 io_req_t        ior);
  88
  89 extern io_return_t      scc_get_status(
  90                                 dev_t                   dev,
  91                                 dev_flavor_t            flavor,
  92                                 dev_status_t            data,
  93                                 mach_msg_type_number_t  *status_count);
  94
  95 extern io_return_t      scc_set_status(
  96                                 dev_t                   dev,
  97                                 dev_flavor_t            flavor,
  98                                 dev_status_t            data,
  99                                 mach_msg_type_number_t  status_count);
 100
 101 extern boolean_t        scc_portdeath(
 102                                 dev_t           dev,
 103                                 ipc_port_t      port);
 104
 105 #endif /* 0 */
 106
 107 extern int              scc_putc(
 108                                 int                     unit,
 109                                 int                     line,
 110                                 int                     c);
 111
 112 extern int              scc_getc(
 113                                 int                     unit,
 114                                 int                     line,
 115                                 boolean_t               wait,
 116                                 boolean_t               raw);
 117
 118 /* Functions in serial_console.c for switching between serial and video
 119    consoles.  */
 120 extern boolean_t        console_is_serial(void);
 121 extern int              switch_to_serial_console(
 122                                 void);
 123
 124 extern int              switch_to_video_console(
 125                                 void);
 126
 127 extern void             switch_to_old_console(
 128                                 int                     old_console);
 129
 130 void serial_keyboard_init(void);
 131 void serial_keyboard_start(void);
 132 void serial_keyboard_poll(void);
 133
 134
 135 /*
 136  * Flags
 137  */
 138 #define TF_ODDP         0x00000002      /* get/send odd parity */
 139 #define TF_EVENP        0x00000004      /* get/send even parity */
 140 #define TF_ANYP         (TF_ODDP|TF_EVENP)
 141                                         /* get any parity/send none */
 142 #define TF_LITOUT       0x00000008      /* output all 8 bits
 143                                            otherwise, characters >= 0x80
 144                                            are time delays      XXX */
 145 #define TF_ECHO         0x00000080      /* device wants user to echo input */
 146 #define TS_MIN          0x00004000      /* buffer input chars, if possible */