pci_machdep.c revision 1.1 
1/*	$NetBSD: pci_machdep.c,v 1.1 2000/03/19 23:07:48 soren Exp $	*/
2
3/*
4 * Copyright (c) 2000 Soren S. Jorvang.  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 AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <sys/types.h>
29#include <sys/param.h>
30#include <sys/time.h>
31#include <sys/systm.h>
32#include <sys/errno.h>
33#include <sys/device.h>
34
35#include <vm/vm.h>
36#include <vm/vm_kern.h>
37
38#define _COBALT_BUS_DMA_PRIVATE
39#include <machine/bus.h>
40
41#include <dev/pci/pcivar.h>
42#include <dev/pci/pcireg.h>
43#include <dev/pci/pcidevs.h>
44
45/*
46 * PCI doesn't have any special needs; just use
47 * the generic versions of these functions.
48 */
49struct cobalt_bus_dma_tag pci_bus_dma_tag = {
50	_bus_dmamap_create,
51	_bus_dmamap_destroy,
52	_bus_dmamap_load,
53	_bus_dmamap_load_mbuf,
54	_bus_dmamap_load_uio,
55	_bus_dmamap_load_raw,
56	_bus_dmamap_unload,
57	_bus_dmamap_sync,
58	_bus_dmamem_alloc,
59	_bus_dmamem_free,
60	_bus_dmamem_map,
61	_bus_dmamem_unmap,
62	_bus_dmamem_mmap,
63};
64
65void
66pci_attach_hook(parent, self, pba)
67	struct device *parent, *self;
68	struct pcibus_attach_args *pba;
69{
70	/* XXX */
71
72	return;
73}
74
75int
76pci_bus_maxdevs(pc, busno)
77	pci_chipset_tag_t pc;
78	int busno;
79{
80	return 31;		/* Probing device 31 hangs the system. */
81}
82
83pcitag_t
84pci_make_tag(pc, bus, device, function)
85	pci_chipset_tag_t pc;
86	int bus, device, function;
87{
88	return (bus << 16) | (device << 11) | (function << 8);
89}
90
91void
92pci_decompose_tag(pc, tag, bp, dp, fp)
93	pci_chipset_tag_t pc;
94	pcitag_t tag;
95	int *bp, *dp, *fp;
96{
97	if (bp != NULL)
98		*bp = (tag >> 16) & 0xff;
99	if (dp != NULL)
100		*dp = (tag >> 11) & 0x1f;
101	if (fp != NULL)
102		*fp = (tag >> 8) & 0x07;
103}
104
105#define PCI_CFG_ADDR	((volatile u_int32_t *)MIPS_PHYS_TO_KSEG1(0x14000cf8))
106#define PCI_CFG_DATA	((volatile u_int32_t *)MIPS_PHYS_TO_KSEG1(0x14000cfc))
107
108pcireg_t
109pci_conf_read(pc, tag, reg)
110	pci_chipset_tag_t pc;
111	pcitag_t tag;
112	int reg;
113{
114	pcireg_t data;
115
116	*PCI_CFG_ADDR = 0x80000000 | tag | reg;
117	data = *PCI_CFG_DATA;
118	*PCI_CFG_ADDR = 0;
119
120	return data;
121}
122
123void
124pci_conf_write(pc, tag, reg, data)
125	pci_chipset_tag_t pc;
126	pcitag_t tag;
127	int reg;
128	pcireg_t data;
129{
130	*PCI_CFG_ADDR = 0x80000000 | tag | reg;
131	*PCI_CFG_DATA = data;
132	*PCI_CFG_ADDR = 0;
133
134	return;
135}
136
137int
138pci_intr_map(pc, intrtag, pin, line, ihp)
139	pci_chipset_tag_t pc;
140	pcitag_t intrtag;
141	int pin, line;
142	pci_intr_handle_t *ihp;
143{
144	/* XXX checks XXX */
145
146	*ihp = line;
147
148	return 0;
149}
150
151const char *
152pci_intr_string(pc, ih)
153	pci_chipset_tag_t pc;
154	pci_intr_handle_t ih;
155{
156	static char irqstr[8];		/* 4 + 2 + NULL + sanity */
157
158	sprintf(irqstr, "irq %d", ih);
159	return irqstr;
160}
161
162/* XXX */
163extern void * intr_establish(int, int, int, int, int (*)(void *), void *);
164extern void *tlp0;
165
166void *
167pci_intr_establish(pc, ih, level, func, arg)
168	pci_chipset_tag_t pc;
169	pci_intr_handle_t ih;
170	int level, (*func)(void *);
171	void *arg;
172{
173	/*
174	 * XXX XXX XXX
175	 */
176
177	if (ih == 4)
178		tlp0 = arg;
179
180	return intr_establish(NULL, ih, IST_LEVEL, level, func, arg);
181}
182
183void
184pci_intr_disestablish(pc, cookie)
185	pci_chipset_tag_t pc;
186	void *cookie;
187{
188	panic("pci_intr_disestablish: not implemented");
189
190	return;
191}
192