1 /* $NetBSD: smdk2800_pci.c,v 1.6 2020/06/17 07:02:31 thorpej Exp $ */
2
3 /*
4 * Copyright (c) 2002 Fujitsu Component Limited
5 * Copyright (c) 2002 Genetec Corporation
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 * 3. Neither the name of The Fujitsu Component Limited nor the name of
17 * Genetec corporation may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY FUJITSU COMPONENT LIMITED AND GENETEC
21 * CORPORATION ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
22 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
23 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
24 * DISCLAIMED. IN NO EVENT SHALL FUJITSU COMPONENT LIMITED OR GENETEC
25 * CORPORATION BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
28 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
29 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35 /*
36 * Platform specific part for S3C2800 PCI support on SMDK2800
37 */
38
39 #include <sys/cdefs.h>
40 __KERNEL_RCSID(0, "$NetBSD: smdk2800_pci.c,v 1.6 2020/06/17 07:02:31 thorpej Exp $");
41
42 #include <sys/param.h>
43 #include <sys/types.h>
44 #include <sys/device.h>
45 #include <sys/systm.h>
46
47 #define _ARM32_BUS_DMA_PRIVATE
48 #include <sys/bus.h>
49
50 #include <dev/pci/pcivar.h>
51 #include <dev/pci/pciconf.h>
52
53 #include <arm/s3c2xx0/s3c2800var.h>
54
55 static struct arm32_dma_range smdk2800_dma_ranges[1];
56
57 static struct arm32_bus_dma_tag smdk2800_bus_dma = {
58 NULL, /* _ranges: set by init routine */
59 0, /* _nranges */
60
61 NULL, /* _cookie */
62
63 _bus_dmamap_create,
64 _bus_dmamap_destroy,
65 _bus_dmamap_load,
66 _bus_dmamap_load_mbuf,
67 _bus_dmamap_load_uio,
68 _bus_dmamap_load_raw,
69 _bus_dmamap_unload,
70 _bus_dmamap_sync,
71 NULL, /* sync_post */
72
73 _bus_dmamem_alloc,
74 _bus_dmamem_free,
75 _bus_dmamem_map,
76 _bus_dmamem_unmap,
77 _bus_dmamem_mmap,
78 };
79
80 bus_dma_tag_t
s3c2800_pci_dma_init(void)81 s3c2800_pci_dma_init(void)
82 {
83 extern paddr_t physical_start, physical_end;
84
85 smdk2800_dma_ranges[0].dr_sysbase = physical_start;
86 smdk2800_dma_ranges[0].dr_busbase =
87 0x80000000 + physical_start - S3C2800_DBANK0_START;
88 smdk2800_dma_ranges[0].dr_len = physical_end - physical_start;
89
90 smdk2800_bus_dma._ranges = smdk2800_dma_ranges;
91 smdk2800_bus_dma._nranges = 1;
92
93 return &smdk2800_bus_dma;
94 }
95