sys/arch/arm/at91/at91spivar.h

   1 /* $NetBSD$ */
   2
   3 /*-
   4  * Copyright (c) 2007 Embedtronics Oy.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or
   8  * without modification, are permitted provided that the following
   9  * conditions are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above
  13  *    copyright notice, this list of conditions and the following
  14  *    disclaimer in the documentation and/or other materials provided
  15  *    with the distribution.
  16  * 3. All advertising materials mentioning features or use of this
  17  *    software must display the following acknowledgements:
  18  *      This product includes software developed by the Urbana-Champaign
  19  *      Independent Media Center.
  20  *      This product includes software developed by Garrett D'Amore.
  21  * 4. Urbana-Champaign Independent Media Center's name and Garrett
  22  *    D'Amore's name may not be used to endorse or promote products
  23  *    derived from this software without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE URBANA-CHAMPAIGN INDEPENDENT
  26  * MEDIA CENTER AND GARRETT D'AMORE ``AS IS'' AND ANY EXPRESS OR
  27  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  28  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE URBANA-CHAMPAIGN INDEPENDENT
  30  * MEDIA CENTER OR GARRETT D'AMORE BE LIABLE FOR ANY DIRECT, INDIRECT,
  31  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  32  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  33  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  34  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  35  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  37  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  38  */
  39
  40 #ifndef _AT91SPIVAR_H_
  41 #define _AT91SPIVAR_H_
  42
  43 #include <dev/spi/spivar.h>
  44
  45 struct at91spi_machdep {
  46         int             (*select_slave)(void *self, int);
  47 };
  48
  49 typedef const struct at91spi_machdep *at91spi_machdep_tag_t;
  50
  51 struct at91spi_softc {
  52         device_t                sc_dev;
  53         bus_space_tag_t         sc_iot;
  54         bus_space_handle_t      sc_ioh;
  55
  56         bus_dma_tag_t           sc_dmat;
  57
  58         int                     sc_pid;         /* peripheral identifier */
  59         struct spi_controller   sc_spi;         /* SPI implementation ops */
  60         at91spi_machdep_tag_t   sc_md;          /* board-specific support */
  61         struct at91spi_job      *sc_job;        /* current job */
  62         struct spi_chunk        *sc_wchunk;
  63         struct spi_chunk        *sc_rchunk;
  64         void                    *sc_ih;         /* interrupt handler (what?) */
  65
  66         void                    *sc_dmapage;
  67         bus_addr_t              sc_dmaaddr;
  68         bus_dmamap_t            sc_dmamap;
  69         int                     sc_dmaoffs;     /* current dma offset   */
  70
  71         struct spi_transfer     *sc_transfer;
  72         bool                    sc_running;     /* is it processing stuff? */
  73
  74         SIMPLEQ_HEAD(,spi_transfer)     sc_q;
  75 };
  76
  77 void at91spi_attach_common(device_t parent, device_t self, void *aux,
  78                             at91spi_machdep_tag_t md);
  79
  80 #endif  /* _AT91SPIVAR_H_ */