pci_machdep.c revision 1.2 
1/*	$NetBSD: pci_machdep.c,v 1.2 2010/06/28 12:14:08 kiyohara Exp $	*/
2/*
3 * Copyright (c) 2009, 2010 KIYOHARA Takashi
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
19 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25 * POSSIBILITY OF SUCH DAMAGE.
26 */
27#include <sys/cdefs.h>
28__KERNEL_RCSID(0, "$NetBSD: pci_machdep.c,v 1.2 2010/06/28 12:14:08 kiyohara Exp $");
29
30#include <machine/bus.h>
31#include <machine/sal.h>
32
33#include <dev/pci/pcivar.h>
34#include <dev/pci/pcireg.h>
35#include <dev/pci/pcidevs.h>
36
37
38void
39pci_attach_hook(device_t parent, device_t self, struct pcibus_attach_args *pba)
40{
41
42	/* Nothing */
43}
44
45int
46pci_bus_maxdevs(pci_chipset_tag_t pc, int busno)
47{
48
49	 return 32;	/* 32 device/bus */
50}
51
52pcitag_t
53pci_make_tag(pci_chipset_tag_t pc, int bus, int device, int function)
54{
55
56#if DIAGNOSTIC
57	if (bus >= 256 || device >= 32 || function >= 8)
58		panic("%s: bad request", __func__);
59#endif
60
61	return (bus << 16) | (device << 11) | (function << 8);
62}
63
64void
65pci_decompose_tag(pci_chipset_tag_t pc, pcitag_t tag, int *bp, int *dp, int *fp)
66{
67
68	if (bp != NULL)
69		*bp = (tag >> 16) & 0xff;
70	if (dp != NULL)
71		*dp = (tag >> 11) & 0x1f;
72	if (fp != NULL)
73		*fp = (tag >> 8) & 0x07;
74}
75
76pcireg_t
77pci_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg)
78{
79	struct ia64_sal_result res;
80
81	res = ia64_sal_entry(SAL_PCI_CONFIG_READ,
82	    tag | reg, sizeof(pcireg_t), 0, 0, 0, 0, 0);
83	if (res.sal_status < 0)
84		return -1;
85	else
86		return res.sal_result[0];
87}
88
89void
90pci_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg, pcireg_t val)
91{
92
93	(void) ia64_sal_entry(SAL_PCI_CONFIG_WRITE,
94	    tag | reg, sizeof(pcireg_t), val, 0, 0, 0, 0);
95}
96