xref: /netbsd-src/sys/arch/algor/algor/algor_p6032_dma.c (revision eee38be7e41353fb57e0e7a817720a94e3fb7163)
1 /*	$NetBSD: algor_p6032_dma.c,v 1.7 2011/07/08 18:48:56 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-6032.
34  */
35 
36 #include <sys/cdefs.h>
37 __KERNEL_RCSID(0, "$NetBSD: algor_p6032_dma.c,v 1.7 2011/07/08 18:48:56 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_p6032reg.h>
45 #include <algor/algor/algor_p6032var.h>
46 
47 #include <dev/isa/isavar.h>
48 
49 void
algor_p6032_dma_init(struct p6032_config * acp)50 algor_p6032_dma_init(struct p6032_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 = P6032_DMA_PCI_PCIBASE;
60         t->_bounce_alloc_lo = P6032_DMA_PCI_PHYSBASE;
61         t->_bounce_alloc_hi = P6032_DMA_PCI_PHYSBASE + P6032_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 ISA DMA.
68 	 */
69 	t = &acp->ac_isa_dmat;
70 	t->_cookie = acp;
71 	t->_wbase = P6032_DMA_ISA_PCIBASE;
72         t->_bounce_alloc_lo = P6032_DMA_ISA_PHYSBASE;
73         t->_bounce_alloc_hi = P6032_DMA_ISA_PHYSBASE + P6032_DMA_ISA_SIZE;
74 	t->_dmamap_ops = mips_bus_dmamap_ops;
75 	t->_dmamem_ops = mips_bus_dmamem_ops;
76 	t->_dmatag_ops = mips_bus_dmatag_ops;
77 }
78