ofw_pci_if.m revision 117119 
1# Copyright (c) 2001, 2003 by Thomas Moestl <tmm@FreeBSD.org>
2# All rights reserved.
3#
4# Redistribution and use in source and binary forms, with or without
5# modification, are permitted provided that the following conditions
6# are met:
7# 1. Redistributions of source code must retain the above copyright
8#    notice, this list of conditions and the following disclaimer.
9# 2. Redistributions in binary form must reproduce the above copyright
10#    notice, this list of conditions and the following disclaimer in the
11#    documentation and/or other materials provided with the distribution.
12#
13# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16# IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
17# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
18# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
19# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
20# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
21# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
22# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23#
24# $FreeBSD: head/sys/sparc64/pci/ofw_pci_if.m 117119 2003-07-01 14:52:47Z tmm $
25
26#include <sys/bus.h>
27#include <machine/bus.h>
28
29#include <dev/ofw/openfirm.h>
30
31#include <sparc64/pci/ofw_pci.h>
32
33INTERFACE ofw_pci;
34
35CODE {
36	static ofw_pci_intr_pending_t ofw_pci_default_intr_pending;
37	static ofw_pci_guess_ino_t ofw_pci_default_guess_ino;
38	static ofw_pci_get_bus_handle_t ofw_pci_default_get_bus_handle;
39	static ofw_pci_get_node_t ofw_pci_default_get_node;
40	static ofw_pci_adjust_busrange_t ofw_pci_default_adjust_busrange;
41
42	static int
43	ofw_pci_default_intr_pending(device_t dev, ofw_pci_intr_t intr)
44	{
45
46		return (OFW_PCI_INTR_PENDING(device_get_parent(dev), intr));
47	}
48
49	static ofw_pci_intr_t
50	ofw_pci_default_guess_ino(device_t dev, phandle_t node, u_int slot,
51	    u_int pin)
52	{
53
54		return (OFW_PCI_GUESS_INO(device_get_parent(dev), node, slot,
55		    pin));
56	}
57
58	static bus_space_handle_t
59	ofw_pci_default_get_bus_handle(device_t dev, int type,
60	    bus_space_handle_t childhdl, bus_space_tag_t *tag)
61	{
62
63		return (OFW_PCI_GET_BUS_HANDLE(device_get_parent(dev), type,
64		    childhdl, tag));
65	}
66
67	static phandle_t
68	ofw_pci_default_get_node(device_t bus, device_t dev)
69	{
70
71		return (0);
72	}
73
74	static void
75	ofw_pci_default_adjust_busrange(device_t dev, u_int busno)
76	{
77
78		return (OFW_PCI_ADJUST_BUSRANGE(device_get_parent(dev), busno));
79	}
80};
81
82# Return whether an interrupt request is pending for the INO intr.
83METHOD int intr_pending {
84	device_t dev;
85	ofw_pci_intr_t intr;
86} DEFAULT ofw_pci_default_intr_pending;
87
88# Let the bus driver guess the INO of the device at the given slot and intpin
89# on the bus described by the node if it could not be determined from the
90# firmware properties. Returns 255 if no INO could be found (mapping will
91# continue at the parent), or the desired INO.
92# This method is only used in the !OFW_NEWPCI case, and will go away soon.
93METHOD ofw_pci_intr_t guess_ino {
94	device_t dev;
95	phandle_t node;
96	u_int slot;
97	u_int pin;
98} DEFAULT ofw_pci_default_guess_ino;
99
100# Get the bustag for the root bus. This is needed for ISA old-stlye
101# in[bwl]()/out[bwl]() support, where no tag retrieved from a resource is
102# passed. The returned tag is used to construct a tag for the whole ISA bus.
103METHOD bus_space_handle_t get_bus_handle {
104	device_t dev;
105	int type;
106	bus_space_handle_t childhdl;
107	bus_space_tag_t *tag;
108} DEFAULT ofw_pci_default_get_bus_handle;
109
110# Get the firmware node for the device dev on the bus bus. The default mthod
111# will return 0, which signals that there is no such node.
112# This could be an ivar, but isn't to avoid numbering conflicts with standard
113# pci/pcib ones.
114METHOD phandle_t get_node {
115	device_t bus;
116	device_t dev;
117} DEFAULT ofw_pci_default_get_node;
118
119# Make sure that all PCI bridges up in the hierarchy contain this bus in their
120# subordinate bus range. This is required because we reenumerate all PCI
121# buses.
122METHOD void adjust_busrange {
123	device_t dev;
124	u_int subbus;
125} DEFAULT ofw_pci_default_adjust_busrange;
126