root/kern/dev/lamebus/lser.h

INCLUDED FROM

   1 /*
   2  * Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
   3  *      The President and Fellows of Harvard College.
   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  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  30 #ifndef _LAMEBUS_LSER_H_
  31 #define _LAMEBUS_LSER_H_
  33 #include <spinlock.h>
  35 struct lser_softc {
  36         /* Initialized by config function */
  37         struct spinlock ls_lock;    /* protects ls_wbusy and device regs */
  38         volatile bool ls_wbusy;     /* true if write in progress */
  40         /* Initialized by lower-level attachment function */
  41         void *ls_busdata;
uint32_t ls_buspos;
  43         void (*ls_maskinterrupt)(void *busdata, uint32_t buspos);
  44         void (*ls_unmaskinterrupt)(void *busdata, uint32_t buspos);
  46         /* Initialized by higher-level attachment function */
  47         void *ls_devdata;
  48         void (*ls_start)(void *devdata);
  49         void (*ls_input)(void *devdata, int ch);
  50 };
  52 /* Functions called by lower-level drivers */
  53 void lser_irq(/*struct lser_softc*/ void *sc);
  55 /* Functions called by higher-level drivers */
  56 void lser_write(/*struct lser_softc*/ void *sc, int ch);
  57 void lser_startpolling(/*struct lser_softc*/ void *sc);
  58 void lser_writepolled(/*struct lser_softc*/ void *sc, int ch);
  59 void lser_endpolling(/*struct lser_softc*/ void *sc);
  61 #endif /* _LAMEBUS_LSER_H_ */