qecvar.h revision 1.7 
1/*	$NetBSD: qecvar.h,v 1.7 2004/06/30 21:41:36 pk 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 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *        This product includes software developed by the NetBSD
21 *        Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 *    contributors may be used to endorse or promote products derived
24 *    from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39struct qec_softc {
40	struct device sc_dev;		/* us as a device */
41	struct sbusdev sc_sd;		/* sbus device */
42	bus_space_tag_t	sc_bustag;	/* bus & DMA tags */
43	bus_dma_tag_t	sc_dmatag;
44	struct	openprom_intr *sc_intr;	/* interrupt info */
45
46	bus_space_handle_t sc_regs;	/* QEC registers */
47	int	sc_nchannels;		/* # of channels on board */
48	int	sc_burst;		/* DVMA burst size in effect */
49	caddr_t	sc_buffer;		/* VA of the buffer we provide */
50	int	sc_bufsiz;		/* Size of buffer */
51
52	u_int	sc_msize;		/* QEC buffer offset per channel */
53	u_int	sc_rsize;		/* QEC buffer size for receive */
54};
55
56struct qec_ring {
57	/* Ring Descriptors */
58	caddr_t		rb_membase;	/* Packet buffer: CPU address */
59	bus_addr_t	rb_dmabase;	/* Packet buffer: DMA address */
60	struct	qec_xd	*rb_txd;	/* Transmit descriptors */
61	bus_addr_t	rb_txddma;	/* DMA address of same */
62	struct	qec_xd	*rb_rxd;	/* Receive descriptors */
63	bus_addr_t	rb_rxddma;	/* DMA address of same */
64	caddr_t		rb_txbuf;	/* Transmit buffers */
65	caddr_t		rb_rxbuf;	/* Receive buffers */
66	int		rb_ntbuf;	/* # of transmit buffers */
67	int		rb_nrbuf;	/* # of receive buffers */
68
69	/* Ring Descriptor state */
70	int	rb_tdhead, rb_tdtail;
71	int	rb_rdtail;
72	int	rb_td_nbusy;
73};
74
75void	qec_meminit __P((struct qec_ring *, unsigned int));
76