osfmk/ppc/serial_io.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * @OSF_COPYRIGHT@
  24  */
  25 /*
  26  * @APPLE_FREE_COPYRIGHT@
  27  */
  28
  29
  30 #include <device/device_types.h>
  31 #include <mach_kdp.h>
  32
  33 /*
  34  *      Console is on the Printer Port (chip channel 0)
  35  *      Debugger is on the Modem Port (chip channel 1)
  36  */
  37
  38 #define CONSOLE_PORT    1
  39
  40 struct scc_tty {
  41         char *          t_addr;         /* device pointer */
  42         int             t_dev;          /* device number */
  43         int             t_ispeed;       /* input speed */
  44         int             t_ospeed;       /* output speed */
  45         char            t_breakc;       /* character to deliver when 'break'
  46                                            condition received */
  47         int             t_flags;        /* mode flags */
  48         int             t_state;        /* current state */
  49         int             t_line;         /* fake line discipline number,
  50                                            for old drivers - always 0 */
  51         int             t_outofband;    /* current out-of-band events */
  52         int             t_outofbandarg; /* arg to first out-of-band event */
  53         int             t_nquoted;      /* number of quoted chars in inq */
  54         int             t_hiwater;      /* baud-rate limited high water mark */
  55         int             t_lowater;      /* baud-rate limited low water mark */
  56 };
  57 typedef struct scc_tty  *scc_tty_t;
  58
  59 /*
  60  * function declarations for performing serial i/o
  61  * other functions below are declared in kern/misc_protos.h
  62  *    cnputc, cngetc, cnmaygetc
  63  */
  64
  65 void initialize_serial(caddr_t scc_phys_base, int32_t serial_baud);
  66
  67 extern int              scc_probe(int32_t serial_baud);
  68
  69 #if 0
  70 extern int              scc_open(
  71                                 dev_t           dev,
  72                                 dev_mode_t      flag,
  73                                 io_req_t        ior);
  74
  75 extern void             scc_close(
  76                                 dev_t           dev);
  77
  78 extern int              scc_read(
  79                                 dev_t           dev,
  80                                 io_req_t        ior);
  81
  82 extern io_return_t      scc_write(
  83                                 dev_t           dev,
  84                                 io_req_t        ior);
  85
  86 extern io_return_t      scc_get_status(
  87                                 dev_t                   dev,
  88                                 dev_flavor_t            flavor,
  89                                 dev_status_t            data,
  90                                 mach_msg_type_number_t  *status_count);
  91
  92 extern io_return_t      scc_set_status(
  93                                 dev_t                   dev,
  94                                 dev_flavor_t            flavor,
  95                                 dev_status_t            data,
  96                                 mach_msg_type_number_t  status_count);
  97
  98 extern boolean_t        scc_portdeath(
  99                                 dev_t           dev,
 100                                 ipc_port_t      port);
 101
 102 #endif /* 0 */
 103
 104 extern int              scc_putc(
 105                                 int                     unit,
 106                                 int                     line,
 107                                 int                     c);
 108
 109 extern int              scc_getc(
 110                                 int                     unit,
 111                                 int                     line,
 112                                 boolean_t               wait,
 113                                 boolean_t               raw);
 114
 115 /* Functions in serial_console.c for switching between serial and video
 116    consoles.  */
 117 extern boolean_t        console_is_serial(void);
 118 extern int              switch_to_serial_console(
 119                                 void);
 120
 121 extern int              switch_to_video_console(
 122                                 void);
 123
 124 extern void             switch_to_old_console(
 125                                 int                     old_console);
 126
 127 void serial_keyboard_init(void);
 128 void serial_keyboard_start(void);
 129 void serial_keyboard_poll(void);
 130
 131
 132 /*
 133  * JMM - We are not really going to support this driver in SMP (barely
 134  * support it now - so just pick up the stubbed out versions.
 135  */
 136 #define DECL_FUNNEL(class,f)
 137 #define DECL_FUNNEL_VARS
 138 #define FUNNEL_INIT(f,p)
 139 #define FUNNEL_ENTER(f)
 140 #define FUNNEL_EXIT(f)
 141 #define FUNNEL_ESCAPE(f)                (1)
 142 #define FUNNEL_REENTER(f,count)
 143 #define FUNNEL_IN_USE(f)                (TRUE)
 144
 145 /*
 146  * Flags
 147  */
 148 #define TF_ODDP         0x00000002      /* get/send odd parity */
 149 #define TF_EVENP        0x00000004      /* get/send even parity */
 150 #define TF_ANYP         (TF_ODDP|TF_EVENP)
 151                                         /* get any parity/send none */
 152 #define TF_LITOUT       0x00000008      /* output all 8 bits
 153                                            otherwise, characters >= 0x80
 154                                            are time delays      XXX */
 155 #define TF_ECHO         0x00000080      /* device wants user to echo input */
 156 #define TS_MIN          0x00004000      /* buffer input chars, if possible */