Home | History | Annotate | Line # | Download | only in sbus 
      1 /*	$NetBSD: qecvar.h,v 1.14 2009/09/19 04:48:18 tsutsui Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Paul Kranenburg.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 struct qec_softc {
     33 	device_t sc_dev;		/* us as a device */
     34 	bus_space_tag_t	sc_bustag;	/* bus & DMA tags */
     35 	bus_dma_tag_t	sc_dmatag;
     36 	struct	openprom_intr *sc_intr;	/* interrupt info */
     37 
     38 	bus_space_handle_t sc_regs;	/* QEC registers */
     39 	int	sc_nchannels;		/* # of channels on board */
     40 	int	sc_burst;		/* DVMA burst size in effect */
     41 	void *	sc_buffer;		/* VA of the buffer we provide */
     42 	int	sc_bufsiz;		/* Size of buffer */
     43 
     44 	u_int	sc_msize;		/* QEC buffer offset per channel */
     45 	u_int	sc_rsize;		/* QEC buffer size for receive */
     46 };
     47 
     48 struct qec_ring {
     49 	/* Ring Descriptors */
     50 	void *		rb_membase;	/* Packet buffer: CPU address */
     51 	bus_addr_t	rb_dmabase;	/* Packet buffer: DMA address */
     52 	struct	qec_xd	*rb_txd;	/* Transmit descriptors */
     53 	bus_addr_t	rb_txddma;	/* DMA address of same */
     54 	struct	qec_xd	*rb_rxd;	/* Receive descriptors */
     55 	bus_addr_t	rb_rxddma;	/* DMA address of same */
     56 	uint8_t		*rb_txbuf;	/* Transmit buffers */
     57 	uint8_t		*rb_rxbuf;	/* Receive buffers */
     58 	int		rb_ntbuf;	/* # of transmit buffers */
     59 	int		rb_nrbuf;	/* # of receive buffers */
     60 
     61 	/* Ring Descriptor state */
     62 	int	rb_tdhead, rb_tdtail;
     63 	int	rb_rdtail;
     64 	int	rb_td_nbusy;
     65 };
     66 
     67 void	qec_meminit(struct qec_ring *, unsigned int);
     68