xref: /freebsd/sys/dev/puc/puc_pci.c (revision 0fca6ea1d4eea4c934cfff25ac9ee8ad6fe95583)
1 /*	$NetBSD: puc.c,v 1.7 2000/07/29 17:43:38 jlam Exp $	*/
2 
3 /*-
4  * SPDX-License-Identifier: BSD-2-Clause AND BSD-3-Clause
5  *
6  * Copyright (c) 2002 JF Hay.  All rights reserved.
7  * Copyright (c) 2000 M. Warner Losh <imp@FreeBSD.org>
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28  * SUCH DAMAGE.
29  */
30 
31 /*-
32  * Copyright (c) 1996, 1998, 1999
33  *	Christopher G. Demetriou.  All rights reserved.
34  *
35  * Redistribution and use in source and binary forms, with or without
36  * modification, are permitted provided that the following conditions
37  * are met:
38  * 1. Redistributions of source code must retain the above copyright
39  *    notice, this list of conditions and the following disclaimer.
40  * 2. Redistributions in binary form must reproduce the above copyright
41  *    notice, this list of conditions and the following disclaimer in the
42  *    documentation and/or other materials provided with the distribution.
43  * 3. All advertising materials mentioning features or use of this software
44  *    must display the following acknowledgement:
45  *      This product includes software developed by Christopher G. Demetriou
46  *	for the NetBSD Project.
47  * 4. The name of the author may not be used to endorse or promote products
48  *    derived from this software without specific prior written permission
49  *
50  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
51  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
52  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
53  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
54  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
55  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
56  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
57  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
58  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
59  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
60  */
61 
62 #include <sys/param.h>
63 #include <sys/systm.h>
64 #include <sys/kernel.h>
65 #include <sys/module.h>
66 #include <sys/bus.h>
67 #include <sys/conf.h>
68 #include <sys/malloc.h>
69 #include <sys/sysctl.h>
70 
71 #include <machine/bus.h>
72 #include <machine/resource.h>
73 #include <sys/rman.h>
74 
75 #include <dev/pci/pcireg.h>
76 #include <dev/pci/pcivar.h>
77 
78 #include <dev/puc/puc_cfg.h>
79 #include <dev/puc/puc_bfe.h>
80 #include <dev/puc/pucdata.c>
81 
82 static int puc_msi_disable;
83 SYSCTL_INT(_hw_puc, OID_AUTO, msi_disable, CTLFLAG_RDTUN,
84     &puc_msi_disable, 0, "Disable use of MSI interrupts by puc(9)");
85 
86 static const struct puc_cfg *
87 puc_pci_match(device_t dev, const struct puc_cfg *desc)
88 {
89 	uint16_t vendor, device;
90 	uint16_t subvendor, subdevice;
91 
92 	vendor = pci_get_vendor(dev);
93 	device = pci_get_device(dev);
94 	subvendor = pci_get_subvendor(dev);
95 	subdevice = pci_get_subdevice(dev);
96 
97 	while (desc->vendor != 0xffff) {
98 		if (desc->vendor == vendor && desc->device == device) {
99 			/* exact match */
100 			if (desc->subvendor == subvendor &&
101 		            desc->subdevice == subdevice)
102 				return (desc);
103 			/* wildcard match */
104 			if (desc->subvendor == 0xffff)
105 				return (desc);
106 		}
107 		desc++;
108 	}
109 
110 	/* no match */
111 	return (NULL);
112 }
113 
114 static int
115 puc_pci_probe(device_t dev)
116 {
117 	const struct puc_cfg *desc;
118 
119 	if ((pci_read_config(dev, PCIR_HDRTYPE, 1) & PCIM_HDRTYPE) != 0)
120 		return (ENXIO);
121 
122 	desc = puc_pci_match(dev, puc_pci_devices);
123 	if (desc == NULL)
124 		return (ENXIO);
125 	return (puc_bfe_probe(dev, desc));
126 }
127 
128 static int
129 puc_pci_attach(device_t dev)
130 {
131 	struct puc_softc *sc;
132 	int error, count;
133 
134 	sc = device_get_softc(dev);
135 
136 	if (!puc_msi_disable) {
137 		count = 1;
138 
139 		if (pci_alloc_msi(dev, &count) == 0) {
140 			sc->sc_msi = 1;
141 			sc->sc_irid = 1;
142 		}
143 	}
144 
145 	error = puc_bfe_attach(dev);
146 
147 	if (error != 0 && sc->sc_msi)
148 		pci_release_msi(dev);
149 
150 	return (error);
151 }
152 
153 static int
154 puc_pci_detach(device_t dev)
155 {
156 	struct puc_softc *sc;
157 	int error;
158 
159 	sc = device_get_softc(dev);
160 
161 	error = puc_bfe_detach(dev);
162 
163 	if (error != 0)
164 		return (error);
165 
166 	if (sc->sc_msi)
167 		error = pci_release_msi(dev);
168 
169 	return (error);
170 }
171 
172 static device_method_t puc_pci_methods[] = {
173     /* Device interface */
174     DEVMETHOD(device_probe,		puc_pci_probe),
175     DEVMETHOD(device_attach,		puc_pci_attach),
176     DEVMETHOD(device_detach,		puc_pci_detach),
177 
178     DEVMETHOD(bus_alloc_resource,	puc_bus_alloc_resource),
179     DEVMETHOD(bus_release_resource,	puc_bus_release_resource),
180     DEVMETHOD(bus_get_resource,		puc_bus_get_resource),
181     DEVMETHOD(bus_read_ivar,		puc_bus_read_ivar),
182     DEVMETHOD(bus_setup_intr,		puc_bus_setup_intr),
183     DEVMETHOD(bus_teardown_intr,	puc_bus_teardown_intr),
184     DEVMETHOD(bus_print_child,		puc_bus_print_child),
185     DEVMETHOD(bus_child_pnpinfo,	puc_bus_child_pnpinfo),
186     DEVMETHOD(bus_child_location,	puc_bus_child_location),
187 
188     DEVMETHOD_END
189 };
190 
191 static driver_t puc_pci_driver = {
192 	puc_driver_name,
193 	puc_pci_methods,
194 	sizeof(struct puc_softc),
195 };
196 
197 DRIVER_MODULE(puc, pci, puc_pci_driver, 0, 0);
198 MODULE_PNP_INFO("U16:vendor;U16:device;U16:#;U16:#;D:#", pci, puc,
199     puc_pci_devices, nitems(puc_pci_devices) - 1);
200