sys/arch/arm/at91/at91dbguvar.h

   1 /*      $NetBSD: at91dbguvar.h,v 1.2 2008/07/03 01:15:38 matt Exp $     */
   2
   3 /*-
   4  * Copyright (c) 2007 Embedtronics Oy
   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  *
  15  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  *
  27  */
  28
  29 #ifndef _AT91DBGUVAR_H_
  30 #define _AT91DBGUVAR_H_
  31
  32 #include <sys/tty.h>
  33
  34 /* Hardware flag masks */
  35 #define COM_HW_NOIEN            0x01
  36 #define COM_HW_DEV_OK           0x20
  37 #define COM_HW_CONSOLE          0x40
  38 #define COM_HW_KGDB             0x80
  39
  40 #define RX_TTY_BLOCKED          0x01
  41 #define RX_TTY_OVERFLOWED       0x02
  42 #define RX_IBUF_BLOCKED         0x04
  43 #define RX_IBUF_OVERFLOWED      0x08
  44 #define RX_ANY_BLOCK            0x0f
  45
  46 #define AT91DBGU_RING_SIZE      2048
  47
  48 struct at91dbgu_softc {
  49         device_t                sc_dev;
  50         bus_addr_t              sc_hwbase;
  51         bus_space_tag_t         sc_iot;
  52         bus_space_handle_t      sc_ioh;
  53
  54         void                    *sc_si;
  55
  56         struct tty              *sc_tty;
  57
  58         u_char                  *sc_rbuf, *sc_ebuf;
  59
  60         u_char                  *sc_tba;
  61         u_int                   sc_tbc;
  62
  63         u_char                  *volatile sc_rbget,
  64                                 *volatile sc_rbput;
  65         volatile u_int          sc_rbavail;
  66
  67         /* status flags */
  68         int                     sc_hwflags, sc_swflags;
  69
  70         volatile u_int          sc_rx_flags,
  71                                 sc_tx_busy,
  72                                 sc_tx_done,
  73                                 sc_tx_stopped,
  74                                 sc_st_check,
  75                                 sc_rx_ready;
  76
  77         volatile u_int          sc_brgr, sc_ier, sc_poll;
  78
  79         /* power management hooks */
  80         int                     (*enable)(struct at91dbgu_softc *);
  81         int                     (*disable)(struct at91dbgu_softc *);
  82
  83         int                     enabled;
  84 #if NRND > 0 && defined(RND_COM)
  85         rndsource_element_t  rnd_source;
  86 #endif
  87 };
  88
  89 void    at91dbgu_attach_subr(struct at91dbgu_softc *);
  90 int     at91dbgu_intr(void* arg);
  91
  92 void    at91dbgu_attach_cn(bus_space_tag_t, int, int mode);
  93
  94 #endif /* _AT91DBGUVAR_H_ */