1 /* $NetBSD: ixp425_pci_dma.c,v 1.7 2022/09/27 06:36:43 skrll Exp $ */
2
3 /*
4 * Copyright (c) 2003
5 * Ichiro FUKUHARA <ichiro@ichiro.org>.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY ICHIRO FUKUHARA ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL ICHIRO FUKUHARA OR THE VOICES IN HIS HEAD BE LIABLE FOR
21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <sys/cdefs.h>
31 __KERNEL_RCSID(0, "$NetBSD: ixp425_pci_dma.c,v 1.7 2022/09/27 06:36:43 skrll Exp $");
32
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/device.h>
36 #include <sys/mbuf.h>
37
38 #include <uvm/uvm_extern.h>
39
40 #define _ARM32_BUS_DMA_PRIVATE
41 #include <sys/bus.h>
42
43 #include <arm/xscale/ixp425reg.h>
44 #include <arm/xscale/ixp425var.h>
45
46 void
ixp425_pci_dma_init(struct ixp425_softc * sc)47 ixp425_pci_dma_init(struct ixp425_softc *sc)
48 {
49 extern paddr_t physical_start, physical_end;
50
51 bus_dma_tag_t dmat = &sc->ia_pci_dmat;
52 struct arm32_dma_range *dr = &sc->ia_pci_dma_range;
53
54 dmat->_ranges = dr;
55 dmat->_nranges = 1;
56
57 dr->dr_sysbase = physical_start;
58 dr->dr_busbase = physical_start;
59 dr->dr_len = physical_end - physical_start;
60
61 dmat->_dmamap_create = _bus_dmamap_create;
62 dmat->_dmamap_destroy = _bus_dmamap_destroy;
63 dmat->_dmamap_load = _bus_dmamap_load;
64 dmat->_dmamap_load_mbuf = _bus_dmamap_load_mbuf;
65 dmat->_dmamap_load_uio = _bus_dmamap_load_uio;
66 dmat->_dmamap_load_raw = _bus_dmamap_load_raw;
67 dmat->_dmamap_unload = _bus_dmamap_unload;
68 dmat->_dmamap_sync_pre = _bus_dmamap_sync;
69 dmat->_dmamap_sync_post = NULL;
70
71 dmat->_dmamem_alloc = _bus_dmamem_alloc;
72 dmat->_dmamem_free = _bus_dmamem_free;
73 dmat->_dmamem_map = _bus_dmamem_map;
74 dmat->_dmamem_unmap = _bus_dmamem_unmap;
75 dmat->_dmamem_mmap = _bus_dmamem_mmap;
76
77 dmat->_dmatag_subregion = _bus_dmatag_subregion;
78 dmat->_dmatag_destroy = _bus_dmatag_destroy;
79 }
80