1 /* $NetBSD: lsi64854var.h,v 1.12 2008/04/28 20:23:50 martin Exp $ */
2
3 /*-
4 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
5 *
6 * Copyright (c) 1998 The NetBSD Foundation, Inc.
7 * All rights reserved.
8 *
9 * This code is derived from software contributed to The NetBSD Foundation
10 * by Paul Kranenburg.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 /* $FreeBSD$ */
35
36 struct lsi64854_softc {
37 device_t sc_dev;
38
39 struct resource *sc_res;
40 u_int sc_rev; /* revision */
41 int sc_burst; /* max suported burst size */
42
43 int sc_channel;
44 #define L64854_CHANNEL_SCSI 1
45 #define L64854_CHANNEL_ENET 2
46 #define L64854_CHANNEL_PP 3
47 void *sc_client;
48
49 int sc_active; /* DMA active? */
50 bus_dmamap_t sc_dmamap; /* DMA map for bus_dma_* */
51
52 bus_dma_tag_t sc_parent_dmat;
53 bus_dma_tag_t sc_buffer_dmat;
54 bus_size_t sc_maxdmasize;
55 int sc_datain;
56 size_t sc_dmasize;
57 void **sc_dmaaddr;
58 size_t *sc_dmalen;
59
60 void (*reset)(struct lsi64854_softc *);/* reset routine */
61 int (*setup)(struct lsi64854_softc *, void **, size_t *,
62 int, size_t *); /* DMA setup */
63 int (*intr)(void *); /* interrupt handler */
64
65 u_int sc_dmactl;
66 int sc_dodrain;
67 };
68
69 #define L64854_GCSR(sc) bus_read_4((sc)->sc_res, L64854_REG_CSR)
70 #define L64854_SCSR(sc, csr) bus_write_4((sc)->sc_res, L64854_REG_CSR, csr)
71
72 /*
73 * DMA engine interface functions.
74 */
75 #define DMA_RESET(sc) (((sc)->reset)(sc))
76 #define DMA_INTR(sc) (((sc)->intr)(sc))
77 #define DMA_SETUP(sc, a, l, d, s) (((sc)->setup)(sc, a, l, d, s))
78 #define DMA_ISACTIVE(sc) ((sc)->sc_active)
79
80 #define DMA_ENINTR(sc) do { \
81 uint32_t csr = L64854_GCSR(sc); \
82 csr |= L64854_INT_EN; \
83 L64854_SCSR(sc, csr); \
84 } while (/* CONSTCOND */0)
85
86 #define DMA_ISINTR(sc) (L64854_GCSR(sc) & (D_INT_PEND|D_ERR_PEND))
87
88 #define DMA_GO(sc) do { \
89 uint32_t csr = L64854_GCSR(sc); \
90 csr |= D_EN_DMA; \
91 L64854_SCSR(sc, csr); \
92 sc->sc_active = 1; \
93 } while (/* CONSTCOND */0)
94
95 int lsi64854_attach(struct lsi64854_softc *);
96 int lsi64854_detach(struct lsi64854_softc *);
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