sys/arch/evbarm/dev/plcomvar.h

   1 /*      $NetBSD: plcomvar.h,v 1.5 2007/10/17 19:54:11 garbled Exp $     */
   2
   3 /*
   4  * Copyright (c) 1996 Christopher G. Demetriou.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *      This product includes software developed by Christopher G. Demetriou
  17  *      for the NetBSD Project.
  18  * 4. The name of the author may not be used to endorse or promote products
  19  *    derived from this software without specific prior written permission
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include "rnd.h"
  34 #include "opt_multiprocessor.h"
  35 #include "opt_lockdebug.h"
  36 #include "opt_plcom.h"
  37 #include "opt_kgdb.h"
  38
  39 #if NRND > 0 && defined(RND_COM)
  40 #include <sys/rnd.h>
  41 #endif
  42
  43 #include <sys/callout.h>
  44 #include <sys/timepps.h>
  45 #include <sys/simplelock.h>
  46
  47 int  plcomcnattach      (bus_space_tag_t, bus_addr_t, int, int, tcflag_t, int);
  48 void plcomcndetach      (void);
  49
  50 #ifdef KGDB
  51 int  plcom_kgdb_attach  (bus_space_tag_t, bus_addr_t, int, int, tcflag_t);
  52 #endif
  53
  54 int  plcom_is_console   (bus_space_tag_t, int, bus_space_handle_t *);
  55
  56 /* Hardware flag masks */
  57 #define PLCOM_HW_NOIEN          0x01
  58 #define PLCOM_HW_FIFO           0x02
  59 #define PLCOM_HW_HAYESP         0x04
  60 #define PLCOM_HW_FLOW           0x08
  61 #define PLCOM_HW_DEV_OK         0x20
  62 #define PLCOM_HW_CONSOLE        0x40
  63 #define PLCOM_HW_KGDB           0x80
  64 #define PLCOM_HW_TXFIFO_DISABLE 0x100
  65
  66 /* Buffer size for character buffer */
  67 #define PLCOM_RING_SIZE         2048
  68
  69 struct plcom_softc {
  70         struct device sc_dev;
  71         void *sc_si;
  72         struct tty *sc_tty;
  73
  74         struct callout sc_diag_callout;
  75
  76         bus_addr_t sc_iounit;
  77         int sc_frequency;
  78
  79         bus_space_tag_t sc_iot;
  80         bus_space_handle_t sc_ioh;
  81
  82         u_int sc_overflows,
  83               sc_floods,
  84               sc_errors;
  85
  86         int sc_hwflags,
  87             sc_swflags;
  88         u_int sc_fifolen;
  89
  90         u_int sc_r_hiwat,
  91               sc_r_lowat;
  92         u_char *volatile sc_rbget,
  93                *volatile sc_rbput;
  94         volatile u_int sc_rbavail;
  95         u_char *sc_rbuf,
  96                *sc_ebuf;
  97
  98         u_char *sc_tba;
  99         u_int sc_tbc,
 100               sc_heldtbc;
 101
 102         volatile u_char sc_rx_flags,
 103 #define RX_TTY_BLOCKED          0x01
 104 #define RX_TTY_OVERFLOWED       0x02
 105 #define RX_IBUF_BLOCKED         0x04
 106 #define RX_IBUF_OVERFLOWED      0x08
 107 #define RX_ANY_BLOCK            0x0f
 108                         sc_tx_busy,
 109                         sc_tx_done,
 110                         sc_tx_stopped,
 111                         sc_st_check,
 112                         sc_rx_ready;
 113
 114         volatile u_char sc_heldchange;
 115         volatile u_char sc_msr, sc_msr_delta, sc_msr_mask, sc_mcr,
 116             sc_mcr_active, sc_lcr, sc_cr, sc_dlbl, sc_dlbh;
 117         u_char sc_mcr_dtr, sc_mcr_rts, sc_msr_cts, sc_msr_dcd;
 118         u_int sc_fifo;
 119
 120         /* Support routine to program mcr lines, if present.  */
 121         void    (*sc_set_mcr)(void *, int, u_int);
 122         void    *sc_set_mcr_arg;
 123
 124         /* power management hooks */
 125         int (*enable) (struct plcom_softc *);
 126         void (*disable) (struct plcom_softc *);
 127         int enabled;
 128
 129         /* PPS signal on DCD, with or without inkernel clock disciplining */
 130         u_char  sc_ppsmask;                     /* pps signal mask */
 131         u_char  sc_ppsassert;                   /* pps leading edge */
 132         u_char  sc_ppsclear;                    /* pps trailing edge */
 133         pps_info_t ppsinfo;
 134         pps_params_t ppsparam;
 135
 136 #if NRND > 0 && defined(RND_COM)
 137         rndsource_element_t  rnd_source;
 138 #endif
 139         struct simplelock       sc_lock;
 140 };
 141
 142 int  plcomprobe1        (bus_space_tag_t, bus_space_handle_t);
 143 int  plcomintr          (void *);
 144 void plcom_attach_subr  (struct plcom_softc *);
 145 int  plcom_detach       (struct device *, int);
 146 int  plcom_activate     (struct device *, enum devact);
 147