sys/arch/arm/ep93xx/epcomvar.h

   1 /*      $NetBSD: epcomvar.h,v 1.3 2005/12/11 12:16:45 christos Exp $        */
   2 /*-
   3  * Copyright (c) 2004 Jesse Off
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  */
  27
  28 #ifndef _EPCOMVAR_H_
  29 #define _EPCOMVAR_H_
  30
  31 /* Hardware flag masks */
  32 #define COM_HW_NOIEN            0x01
  33 #define COM_HW_DEV_OK           0x20
  34 #define COM_HW_CONSOLE          0x40
  35 #define COM_HW_KGDB             0x80
  36
  37 #define RX_TTY_BLOCKED          0x01
  38 #define RX_TTY_OVERFLOWED       0x02
  39 #define RX_IBUF_BLOCKED         0x04
  40 #define RX_IBUF_OVERFLOWED      0x08
  41 #define RX_ANY_BLOCK            0x0f
  42
  43 #define EPCOM_RING_SIZE 2048
  44
  45 struct epcom_softc {
  46         struct device           sc_dev;
  47         bus_addr_t              sc_hwbase;
  48         bus_space_tag_t         sc_iot;
  49         bus_space_handle_t      sc_ioh;
  50
  51         void                    *sc_si;
  52
  53         struct tty              *sc_tty;
  54
  55         u_char                  *sc_rbuf, *sc_ebuf;
  56
  57         u_char                  *sc_tba;
  58         u_int                   sc_tbc;
  59
  60         u_char                  *volatile sc_rbget,
  61                                 *volatile sc_rbput;
  62         volatile u_int          sc_rbavail;
  63
  64         /* status flags */
  65         int                     sc_hwflags, sc_swflags;
  66
  67         volatile u_int          sc_rx_flags,
  68                                 sc_tx_busy,
  69                                 sc_tx_done,
  70                                 sc_tx_stopped,
  71                                 sc_st_check,
  72                                 sc_rx_ready;
  73
  74         /* control registers */
  75         u_int                   sc_lcrlo;
  76         u_int                   sc_lcrmid;
  77         u_int                   sc_lcrhi;
  78         u_int                   sc_ctrl;
  79
  80         /* power management hooks */
  81         int                     (*enable)(struct epcom_softc *);
  82         int                     (*disable)(struct epcom_softc *);
  83
  84         int                     enabled;
  85 #if NRND > 0 && defined(RND_COM)
  86         rndsource_element_t  rnd_source;
  87 #endif
  88 };
  89
  90 void    epcom_attach_subr(struct epcom_softc *);
  91
  92 int     epcomintr(void* arg);
  93 int     epcomcnattach(bus_space_tag_t, bus_addr_t, bus_space_handle_t,
  94                        int, tcflag_t);
  95
  96 #endif /* _EPCOMVAR_H_ */