lsi64854var.h revision 226381 
1/*	$NetBSD: lsi64854var.h,v 1.12 2008/04/28 20:23:50 martin 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/*	$FreeBSD: head/sys/sparc64/sbus/lsi64854var.h 226381 2011-10-15 09:29:43Z marius $ */
33
34struct lsi64854_softc {
35	device_t		sc_dev;
36
37	struct resource		*sc_res;
38	u_int			sc_rev;		/* revision */
39	int			sc_burst;	/* max suported burst size */
40
41	int			sc_channel;
42#define L64854_CHANNEL_SCSI	1
43#define L64854_CHANNEL_ENET	2
44#define L64854_CHANNEL_PP	3
45	void			*sc_client;
46
47	int			sc_active;	/* DMA active? */
48	bus_dmamap_t		sc_dmamap;	/* DMA map for bus_dma_* */
49
50	bus_dma_tag_t		sc_parent_dmat;
51	bus_dma_tag_t		sc_buffer_dmat;
52	int			sc_datain;
53	size_t			sc_dmasize;
54	void			**sc_dmaaddr;
55	size_t			*sc_dmalen;
56
57	void	(*reset)(struct lsi64854_softc *);/* reset routine */
58	int	(*setup)(struct lsi64854_softc *, void **, size_t *,
59		    int, size_t *);		/* DMA setup */
60	int	(*intr)(void *);		/* interrupt handler */
61
62	u_int 			sc_dmactl;
63	int			sc_dodrain;
64};
65
66#define L64854_GCSR(sc)		bus_read_4((sc)->sc_res, L64854_REG_CSR)
67#define L64854_SCSR(sc, csr)	bus_write_4((sc)->sc_res, L64854_REG_CSR, csr)
68
69/*
70 * DMA engine interface functions.
71 */
72#define DMA_RESET(sc)			(((sc)->reset)(sc))
73#define DMA_INTR(sc)			(((sc)->intr)(sc))
74#define DMA_SETUP(sc, a, l, d, s)	(((sc)->setup)(sc, a, l, d, s))
75#define DMA_ISACTIVE(sc)		((sc)->sc_active)
76
77#define DMA_ENINTR(sc) do {			\
78	uint32_t csr = L64854_GCSR(sc);		\
79	csr |= L64854_INT_EN;			\
80	L64854_SCSR(sc, csr);			\
81} while (/* CONSTCOND */0)
82
83#define DMA_ISINTR(sc)	(L64854_GCSR(sc) & (D_INT_PEND|D_ERR_PEND))
84
85#define DMA_GO(sc) do {				\
86	uint32_t csr = L64854_GCSR(sc);		\
87	csr |= D_EN_DMA;			\
88	L64854_SCSR(sc, csr);			\
89	sc->sc_active = 1;			\
90} while (/* CONSTCOND */0)
91
92int	lsi64854_attach(struct lsi64854_softc *);
93int	lsi64854_detach(struct lsi64854_softc *);
94