1/*-
2 * Copyright (c) 1994,1995 Stefan Esser, Wolfgang StanglMeier
3 * Copyright (c) 2000 Michael Smith <msmith@freebsd.org>
4 * Copyright (c) 2000 BSDi
5 * 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. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
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#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 1994,1995 Stefan Esser, Wolfgang StanglMeier
3 * Copyright (c) 2000 Michael Smith <msmith@freebsd.org>
4 * Copyright (c) 2000 BSDi
5 * 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. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
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#include <sys/cdefs.h>
|
41#include <machine/bus.h>
42#include <machine/resource.h>
43#include <sys/bus.h>
44#include <sys/rman.h>
45
46#include <isa/isavar.h>
47#include <dev/pci/pcivar.h>
48#include <dev/pci/pcireg.h>
49
50#define ELCR_IOADDR 0x4d0 /* Interrupt Edge/Level Control Registers */
51#define ELCR_IOLEN 2
52
53struct isab_softc {
54 struct resource *elcr_res;
55 u_char saved_elcr[ELCR_IOLEN];
56};
57
58static int isab_probe(device_t dev);
59static int pci_isab_attach(device_t dev);
60static int isab_detach(device_t dev);
61static int isab_resume(device_t dev);
62static int isab_suspend(device_t dev);
63
64static device_method_t isab_methods[] = {
65 /* Device interface */
66 DEVMETHOD(device_probe, isab_probe),
67 DEVMETHOD(device_attach, pci_isab_attach),
68 DEVMETHOD(device_detach, isab_detach),
69 DEVMETHOD(device_shutdown, bus_generic_shutdown),
70 DEVMETHOD(device_suspend, isab_suspend),
71 DEVMETHOD(device_resume, isab_resume),
72
73 /* Bus interface */
74 DEVMETHOD(bus_print_child, bus_generic_print_child),
75 DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
76 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
77 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
78 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
79 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
80 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
81
82 { 0, 0 }
83};
84
85static driver_t isab_driver = {
86 "isab",
87 isab_methods,
88 sizeof(struct isab_softc),
89};
90
91DRIVER_MODULE(isab, pci, isab_driver, isab_devclass, 0, 0);
92
93/*
94 * XXX we need to add a quirk list here for bridges that don't correctly
95 * report themselves.
96 */
97static int
98isab_probe(device_t dev)
99{
100 int matched = 0;
101
102 /*
103 * Try for a generic match based on class/subclass.
104 */
105 if ((pci_get_class(dev) == PCIC_BRIDGE) &&
106 (pci_get_subclass(dev) == PCIS_BRIDGE_ISA)) {
107 matched = 1;
108 } else {
109 /*
110 * These are devices that we *know* are PCI:ISA bridges.
111 * Sometimes, however, they don't report themselves as
112 * such. Check in case one of them is pretending to be
113 * something else.
114 */
115 switch (pci_get_devid(dev)) {
116 case 0x04848086: /* Intel 82378ZB/82378IB */
117 case 0x122e8086: /* Intel 82371FB */
118 case 0x70008086: /* Intel 82371SB */
119 case 0x71108086: /* Intel 82371AB */
120 case 0x71988086: /* Intel 82443MX */
121 case 0x24108086: /* Intel 82801AA (ICH) */
122 case 0x24208086: /* Intel 82801AB (ICH0) */
123 case 0x24408086: /* Intel 82801AB (ICH2) */
124 case 0x00061004: /* VLSI 82C593 */
125 case 0x05861106: /* VIA 82C586 */
126 case 0x05961106: /* VIA 82C596 */
127 case 0x06861106: /* VIA 82C686 */
128 case 0x153310b9: /* AcerLabs M1533 */
129 case 0x154310b9: /* AcerLabs M1543 */
130 case 0x00081039: /* SiS 85c503 */
131 case 0x00001078: /* Cyrix Cx5510 */
132 case 0x01001078: /* Cyrix Cx5530 */
133 case 0xc7001045: /* OPTi 82C700 (FireStar) */
134 case 0x00011033: /* NEC 0001 (C-bus) */
135 case 0x002c1033: /* NEC 002C (C-bus) */
136 case 0x003b1033: /* NEC 003B (C-bus) */
137 case 0x886a1060: /* UMC UM8886 ISA */
138 case 0x02001166: /* ServerWorks IB6566 PCI */
139 if (bootverbose)
140 printf("PCI-ISA bridge with incorrect subclass 0x%x\n",
141 pci_get_subclass(dev));
142 matched = 1;
143 break;
144
145 default:
146 break;
147 }
148 }
149
150 if (matched) {
151 device_set_desc(dev, "PCI-ISA bridge");
152 return(-10000);
153 }
154 return(ENXIO);
155}
156
157static int
158pci_isab_attach(device_t dev)
159{
160 struct isab_softc *sc = device_get_softc(dev);
161 int error, rid;
162
163 /*
164 * Attach an ISA bus. Note that we can only have one ISA bus.
165 */
166 error = isab_attach(dev);
167 if (error)
168 return (error);
169
170 switch (pci_get_devid(dev)) {
171 case 0x71108086: /* Intel 82371AB */
172 /*
173 * Sometimes the ELCR (Edge/Level Control Register) is not restored
174 * correctly on resume by the BIOS, so we handle it ourselves.
175 */
176 rid = 0;
177 bus_set_resource(dev, SYS_RES_IOPORT, rid, ELCR_IOADDR, ELCR_IOLEN);
178 sc->elcr_res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,
179 RF_ACTIVE);
180 if (sc->elcr_res == NULL)
181 device_printf(dev, "failed to allocate ELCR resource\n");
182 break;
183 }
184
185 return(0);
186}
187
188static int
189isab_detach(device_t dev)
190{
191 struct isab_softc *sc = device_get_softc(dev);
192
193 if (sc->elcr_res != NULL)
194 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->elcr_res);
195
196 return (bus_generic_detach(dev));
197}
198
199static int
200isab_suspend(device_t dev)
201{
202 struct isab_softc *sc = device_get_softc(dev);
203 bus_space_tag_t bst;
204 bus_space_handle_t bsh;
205 int i;
206
207 /* Save the ELCR if required. */
208 if (sc->elcr_res != NULL) {
209 bst = rman_get_bustag(sc->elcr_res);
210 bsh = rman_get_bushandle(sc->elcr_res);
211 for (i = 0; i < ELCR_IOLEN; i++)
212 sc->saved_elcr[i] = bus_space_read_1(bst, bsh, i);
213 }
214
215 return (bus_generic_suspend(dev));
216}
217
218static int
219isab_resume(device_t dev)
220{
221 struct isab_softc *sc = device_get_softc(dev);
222 bus_space_tag_t bst;
223 bus_space_handle_t bsh;
224 int i;
225
226 /* Restore the ELCR if required. */
227 if (sc->elcr_res != NULL) {
228 bst = rman_get_bustag(sc->elcr_res);
229 bsh = rman_get_bushandle(sc->elcr_res);
230 for (i = 0; i < ELCR_IOLEN; i++)
231 bus_space_write_1(bst, bsh, i, sc->saved_elcr[i]);
232 }
233
234 return (bus_generic_resume(dev));
235}
| 42#include <machine/bus.h>
43#include <machine/resource.h>
44#include <sys/bus.h>
45#include <sys/rman.h>
46
47#include <isa/isavar.h>
48#include <dev/pci/pcivar.h>
49#include <dev/pci/pcireg.h>
50
51#define ELCR_IOADDR 0x4d0 /* Interrupt Edge/Level Control Registers */
52#define ELCR_IOLEN 2
53
54struct isab_softc {
55 struct resource *elcr_res;
56 u_char saved_elcr[ELCR_IOLEN];
57};
58
59static int isab_probe(device_t dev);
60static int pci_isab_attach(device_t dev);
61static int isab_detach(device_t dev);
62static int isab_resume(device_t dev);
63static int isab_suspend(device_t dev);
64
65static device_method_t isab_methods[] = {
66 /* Device interface */
67 DEVMETHOD(device_probe, isab_probe),
68 DEVMETHOD(device_attach, pci_isab_attach),
69 DEVMETHOD(device_detach, isab_detach),
70 DEVMETHOD(device_shutdown, bus_generic_shutdown),
71 DEVMETHOD(device_suspend, isab_suspend),
72 DEVMETHOD(device_resume, isab_resume),
73
74 /* Bus interface */
75 DEVMETHOD(bus_print_child, bus_generic_print_child),
76 DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
77 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
78 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
79 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
80 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
81 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
82
83 { 0, 0 }
84};
85
86static driver_t isab_driver = {
87 "isab",
88 isab_methods,
89 sizeof(struct isab_softc),
90};
91
92DRIVER_MODULE(isab, pci, isab_driver, isab_devclass, 0, 0);
93
94/*
95 * XXX we need to add a quirk list here for bridges that don't correctly
96 * report themselves.
97 */
98static int
99isab_probe(device_t dev)
100{
101 int matched = 0;
102
103 /*
104 * Try for a generic match based on class/subclass.
105 */
106 if ((pci_get_class(dev) == PCIC_BRIDGE) &&
107 (pci_get_subclass(dev) == PCIS_BRIDGE_ISA)) {
108 matched = 1;
109 } else {
110 /*
111 * These are devices that we *know* are PCI:ISA bridges.
112 * Sometimes, however, they don't report themselves as
113 * such. Check in case one of them is pretending to be
114 * something else.
115 */
116 switch (pci_get_devid(dev)) {
117 case 0x04848086: /* Intel 82378ZB/82378IB */
118 case 0x122e8086: /* Intel 82371FB */
119 case 0x70008086: /* Intel 82371SB */
120 case 0x71108086: /* Intel 82371AB */
121 case 0x71988086: /* Intel 82443MX */
122 case 0x24108086: /* Intel 82801AA (ICH) */
123 case 0x24208086: /* Intel 82801AB (ICH0) */
124 case 0x24408086: /* Intel 82801AB (ICH2) */
125 case 0x00061004: /* VLSI 82C593 */
126 case 0x05861106: /* VIA 82C586 */
127 case 0x05961106: /* VIA 82C596 */
128 case 0x06861106: /* VIA 82C686 */
129 case 0x153310b9: /* AcerLabs M1533 */
130 case 0x154310b9: /* AcerLabs M1543 */
131 case 0x00081039: /* SiS 85c503 */
132 case 0x00001078: /* Cyrix Cx5510 */
133 case 0x01001078: /* Cyrix Cx5530 */
134 case 0xc7001045: /* OPTi 82C700 (FireStar) */
135 case 0x00011033: /* NEC 0001 (C-bus) */
136 case 0x002c1033: /* NEC 002C (C-bus) */
137 case 0x003b1033: /* NEC 003B (C-bus) */
138 case 0x886a1060: /* UMC UM8886 ISA */
139 case 0x02001166: /* ServerWorks IB6566 PCI */
140 if (bootverbose)
141 printf("PCI-ISA bridge with incorrect subclass 0x%x\n",
142 pci_get_subclass(dev));
143 matched = 1;
144 break;
145
146 default:
147 break;
148 }
149 }
150
151 if (matched) {
152 device_set_desc(dev, "PCI-ISA bridge");
153 return(-10000);
154 }
155 return(ENXIO);
156}
157
158static int
159pci_isab_attach(device_t dev)
160{
161 struct isab_softc *sc = device_get_softc(dev);
162 int error, rid;
163
164 /*
165 * Attach an ISA bus. Note that we can only have one ISA bus.
166 */
167 error = isab_attach(dev);
168 if (error)
169 return (error);
170
171 switch (pci_get_devid(dev)) {
172 case 0x71108086: /* Intel 82371AB */
173 /*
174 * Sometimes the ELCR (Edge/Level Control Register) is not restored
175 * correctly on resume by the BIOS, so we handle it ourselves.
176 */
177 rid = 0;
178 bus_set_resource(dev, SYS_RES_IOPORT, rid, ELCR_IOADDR, ELCR_IOLEN);
179 sc->elcr_res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,
180 RF_ACTIVE);
181 if (sc->elcr_res == NULL)
182 device_printf(dev, "failed to allocate ELCR resource\n");
183 break;
184 }
185
186 return(0);
187}
188
189static int
190isab_detach(device_t dev)
191{
192 struct isab_softc *sc = device_get_softc(dev);
193
194 if (sc->elcr_res != NULL)
195 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->elcr_res);
196
197 return (bus_generic_detach(dev));
198}
199
200static int
201isab_suspend(device_t dev)
202{
203 struct isab_softc *sc = device_get_softc(dev);
204 bus_space_tag_t bst;
205 bus_space_handle_t bsh;
206 int i;
207
208 /* Save the ELCR if required. */
209 if (sc->elcr_res != NULL) {
210 bst = rman_get_bustag(sc->elcr_res);
211 bsh = rman_get_bushandle(sc->elcr_res);
212 for (i = 0; i < ELCR_IOLEN; i++)
213 sc->saved_elcr[i] = bus_space_read_1(bst, bsh, i);
214 }
215
216 return (bus_generic_suspend(dev));
217}
218
219static int
220isab_resume(device_t dev)
221{
222 struct isab_softc *sc = device_get_softc(dev);
223 bus_space_tag_t bst;
224 bus_space_handle_t bsh;
225 int i;
226
227 /* Restore the ELCR if required. */
228 if (sc->elcr_res != NULL) {
229 bst = rman_get_bustag(sc->elcr_res);
230 bsh = rman_get_bushandle(sc->elcr_res);
231 for (i = 0; i < ELCR_IOLEN; i++)
232 bus_space_write_1(bst, bsh, i, sc->saved_elcr[i]);
233 }
234
235 return (bus_generic_resume(dev));
236}
|