1/* $OpenBSD: tsp_pci.c,v 1.4 2010/12/04 17:06:31 miod Exp $ */
2/* $NetBSD: tsp_pci.c,v 1.1 1999/06/29 06:46:47 ross Exp $ */
3
4/*-
5 * Copyright (c) 1999 by Ross Harvey.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *	This product includes software developed by Ross Harvey.
18 * 4. The name of Ross Harvey may not be used to endorse or promote products
19 *    derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY ROSS HARVEY ``AS IS'' AND ANY EXPRESS
22 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURP0SE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL ROSS HARVEY BE LIABLE FOR ANY
25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 */
34
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/kernel.h>
38#include <sys/device.h>
39
40#include <uvm/uvm_extern.h>
41
42#include <dev/pci/pcireg.h>
43#include <dev/pci/pcivar.h>
44
45#include <machine/autoconf.h>
46#include <machine/rpb.h>
47
48#include <alpha/pci/tsreg.h>
49#include <alpha/pci/tsvar.h>
50
51#define tsp_pci() { Generate ctags(1) key. }
52
53void		tsp_attach_hook(struct device *, struct device *,
54		    struct pcibus_attach_args *);
55int		tsp_bus_maxdevs(void *, int);
56pcitag_t	tsp_make_tag(void *, int, int, int);
57void		tsp_decompose_tag(void *, pcitag_t, int *, int *,
58		    int *);
59int		tsp_conf_size(void *, pcitag_t);
60pcireg_t	tsp_conf_read(void *, pcitag_t, int);
61void		tsp_conf_write(void *, pcitag_t, int, pcireg_t);
62
63void
64tsp_pci_init(pc, v)
65	pci_chipset_tag_t pc;
66	void *v;
67{
68	pc->pc_conf_v = v;
69	pc->pc_attach_hook = tsp_attach_hook;
70	pc->pc_bus_maxdevs = tsp_bus_maxdevs;
71	pc->pc_make_tag = tsp_make_tag;
72	pc->pc_decompose_tag = tsp_decompose_tag;
73	pc->pc_conf_size = tsp_conf_size;
74	pc->pc_conf_read = tsp_conf_read;
75	pc->pc_conf_write = tsp_conf_write;
76}
77
78void
79tsp_attach_hook(parent, self, pba)
80	struct device *parent, *self;
81	struct pcibus_attach_args *pba;
82{
83}
84
85int
86tsp_bus_maxdevs(cpv, busno)
87	void *cpv;
88	int busno;
89{
90	return 32;
91}
92
93pcitag_t
94tsp_make_tag(cpv, b, d, f)
95	void *cpv;
96	int b, d, f;
97{
98	return b << 16 | d << 11 | f << 8;
99}
100
101void
102tsp_decompose_tag(cpv, tag, bp, dp, fp)
103	void *cpv;
104	pcitag_t tag;
105	int *bp, *dp, *fp;
106{
107	if (bp != NULL)
108		*bp = (tag >> 16) & 0xff;
109	if (dp != NULL)
110		*dp = (tag >> 11) & 0x1f;
111	if (fp != NULL)
112		*fp = (tag >> 8) & 0x7;
113}
114
115int
116tsp_conf_size(void *cpv, pcitag_t tag)
117{
118	return PCI_CONFIG_SPACE_SIZE;
119}
120
121/*
122 * Tsunami makes this a lot easier than it used to be, automatically
123 * generating type 0 or type 1 cycles, and quietly returning -1 with
124 * no errors on unanswered probes.
125 */
126pcireg_t
127tsp_conf_read(cpv, tag, offset)
128	void *cpv;
129	pcitag_t tag;
130	int offset;
131{
132	pcireg_t *datap, data;
133	struct tsp_config *pcp = cpv;
134
135	datap = S_PAGE(pcp->pc_iobase | P_PCI_CONFIG | tag | (offset & ~3));
136	alpha_mb();
137	data = *datap;
138	alpha_mb();
139	return data;
140}
141
142void
143tsp_conf_write(cpv, tag, offset, data)
144	void *cpv;
145	pcitag_t tag;
146	int offset;
147	pcireg_t data;
148{
149	pcireg_t *datap;
150	struct tsp_config *pcp = cpv;
151
152	datap = S_PAGE(pcp->pc_iobase | P_PCI_CONFIG | tag | (offset & ~3));
153	alpha_mb();
154	*datap = data;
155	alpha_mb();
156}
157