serial_io.h

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    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 */

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FreeBSD/Linux Kernel Cross Reference sys/osfmk/ppc/serial_io.h

FreeBSD/Linux Kernel Cross Reference
sys/osfmk/ppc/serial_io.h