1 /* $NetBSD: algor_p4032_dma.c,v 1.8 2011/07/08 18:48:55 matt Exp $ */
2
3 /*-
4 * Copyright (c) 2001 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe.
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 /*
33 * Platform-specific DMA support for the Algorithmics P-4032.
34 */
35
36 #include <sys/cdefs.h>
37 __KERNEL_RCSID(0, "$NetBSD: algor_p4032_dma.c,v 1.8 2011/07/08 18:48:55 matt Exp $");
38
39 #include <sys/param.h>
40
41 #define _MIPS_BUS_DMA_PRIVATE
42 #include <sys/bus.h>
43
44 #include <algor/algor/algor_p4032reg.h>
45 #include <algor/algor/algor_p4032var.h>
46
47 #include <algor/pci/vtpbcvar.h>
48
49 void
algor_p4032_dma_init(struct p4032_config * acp)50 algor_p4032_dma_init(struct p4032_config *acp)
51 {
52 bus_dma_tag_t t;
53
54 /*
55 * Initialize the DMA tag used for PCI DMA.
56 */
57 t = &acp->ac_pci_dmat;
58 t->_cookie = acp;
59 t->_wbase = vtpbc_configuration.vt_dma_winbase;
60 t->_bounce_alloc_lo = P4032_DMA_PCI_PHYSBASE;
61 t->_bounce_alloc_hi = P4032_DMA_PCI_PHYSBASE + P4032_DMA_PCI_SIZE;
62 t->_dmamap_ops = mips_bus_dmamap_ops;
63 t->_dmamem_ops = mips_bus_dmamem_ops;
64 t->_dmatag_ops = mips_bus_dmatag_ops;
65
66 /*
67 * Initialize the DMA tag used for PCI on-board Ethernet DMA.
68 * This window has pre-fetching enabled (hooray for broken
69 * PCI bus controllers).
70 */
71 t = &acp->ac_pci_pf_dmat;
72 t->_cookie = acp;
73 t->_wbase = P4032_DMA_PCI_PF_PCIBASE;
74 t->_bounce_alloc_lo = P4032_DMA_PCI_PHYSBASE;
75 t->_bounce_alloc_hi = P4032_DMA_PCI_PHYSBASE + P4032_DMA_PCI_SIZE;
76 t->_dmamap_ops = mips_bus_dmamap_ops;
77 t->_dmamem_ops = mips_bus_dmamem_ops;
78 t->_dmatag_ops = mips_bus_dmatag_ops;
79 }
80