1/*
2 * Copyright (c) 1997, Stefan Esser <se@freebsd.org>
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 unmodified, this list of conditions, and the following
12 * disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD: head/sys/dev/acpica/acpi_pci.c 128016 2004-04-07 19:42:21Z jhb $");
31
32#include "opt_bus.h"
33
34#include <sys/param.h>
35#include <sys/systm.h>
36#include <sys/bus.h>
37#include <sys/kernel.h>
38#include <sys/malloc.h>
39#include <sys/module.h>
40
41#include "acpi.h"
42
43#include <dev/acpica/acpivar.h>
44
45#include <sys/pciio.h>
46#include <dev/pci/pcireg.h>
47#include <dev/pci/pcivar.h>
48#include <dev/pci/pci_private.h>
49
50#include "pcib_if.h"
51#include "pci_if.h"
52
53/*
54 * Hooks for the ACPI CA debugging infrastructure
55 */
56#define _COMPONENT ACPI_BUS
57ACPI_MODULE_NAME("PCI")
58
59struct acpi_pci_devinfo {
60 struct pci_devinfo ap_dinfo;
61 ACPI_HANDLE ap_handle;
62};
63
64static int acpi_pci_probe(device_t dev);
65static int acpi_pci_attach(device_t dev);
66static int acpi_pci_read_ivar(device_t dev, device_t child, int which,
67 uintptr_t *result);
68static int acpi_pci_child_location_str_method(device_t cbdev,
69 device_t child, char *buf, size_t buflen);
70
71
72static int acpi_pci_set_powerstate_method(device_t dev, device_t child,
73 int state);
74static ACPI_STATUS acpi_pci_save_handle(ACPI_HANDLE handle, UINT32 level,
75 void *context, void **status);
76
77static device_method_t acpi_pci_methods[] = {
78 /* Device interface */
79 DEVMETHOD(device_probe, acpi_pci_probe),
80 DEVMETHOD(device_attach, acpi_pci_attach),
81 DEVMETHOD(device_shutdown, bus_generic_shutdown),
82 DEVMETHOD(device_suspend, bus_generic_suspend),
83 DEVMETHOD(device_resume, pci_resume),
84
85 /* Bus interface */
86 DEVMETHOD(bus_print_child, pci_print_child),
87 DEVMETHOD(bus_probe_nomatch, pci_probe_nomatch),
88 DEVMETHOD(bus_read_ivar, acpi_pci_read_ivar),
89 DEVMETHOD(bus_write_ivar, pci_write_ivar),
90 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
91 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
92 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
93
94 DEVMETHOD(bus_get_resource_list,pci_get_resource_list),
95 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
96 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
97 DEVMETHOD(bus_delete_resource, pci_delete_resource),
98 DEVMETHOD(bus_alloc_resource, pci_alloc_resource),
99 DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
100 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
101 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
102 DEVMETHOD(bus_child_pnpinfo_str, pci_child_pnpinfo_str_method),
103 DEVMETHOD(bus_child_location_str, acpi_pci_child_location_str_method),
104
105 /* PCI interface */
106 DEVMETHOD(pci_read_config, pci_read_config_method),
107 DEVMETHOD(pci_write_config, pci_write_config_method),
108 DEVMETHOD(pci_enable_busmaster, pci_enable_busmaster_method),
109 DEVMETHOD(pci_disable_busmaster, pci_disable_busmaster_method),
110 DEVMETHOD(pci_enable_io, pci_enable_io_method),
111 DEVMETHOD(pci_disable_io, pci_disable_io_method),
112 DEVMETHOD(pci_get_powerstate, pci_get_powerstate_method),
113 DEVMETHOD(pci_set_powerstate, acpi_pci_set_powerstate_method),
114 DEVMETHOD(pci_assign_interrupt, pci_assign_interrupt_method),
115
116 { 0, 0 }
117};
118
119static driver_t acpi_pci_driver = {
120 "pci",
121 acpi_pci_methods,
122 0, /* no softc */
123};
124
125DRIVER_MODULE(acpi_pci, pcib, acpi_pci_driver, pci_devclass, 0, 0);
126MODULE_VERSION(acpi_pci, 1);
127MODULE_DEPEND(acpi_pci, pci, 1, 1, 1);
128
129static int
130acpi_pci_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
131{
132 struct acpi_pci_devinfo *dinfo;
133
134 switch (which) {
135 case ACPI_IVAR_HANDLE:
136 dinfo = device_get_ivars(child);
137 *result = (uintptr_t)dinfo->ap_handle;
138 return (0);
139 }
140 return (pci_read_ivar(dev, child, which, result));
141}
142
143static int
144acpi_pci_child_location_str_method(device_t cbdev, device_t child, char *buf,
145 size_t buflen)
146{
147 struct acpi_pci_devinfo *dinfo = device_get_ivars(child);
148
149 pci_child_location_str_method(cbdev, child, buf, buflen);
150
151 if (dinfo->ap_handle) {
152 strlcat(buf, " path=", buflen);
153 strlcat(buf, acpi_name(dinfo->ap_handle), buflen);
154 }
155 return (0);
156}
157
158/*
159 * PCI power manangement
160 */
161static int
162acpi_pci_set_powerstate_method(device_t dev, device_t child, int state)
163{
164 ACPI_STATUS status;
165 int acpi_state, old_state, error;
166
167 switch (state) {
168 case PCI_POWERSTATE_D0:
169 acpi_state = ACPI_STATE_D0;
170 break;
171 case PCI_POWERSTATE_D1:
172 acpi_state = ACPI_STATE_D1;
173 break;
174 case PCI_POWERSTATE_D2:
175 acpi_state = ACPI_STATE_D2;
176 break;
177 case PCI_POWERSTATE_D3:
178 acpi_state = ACPI_STATE_D3;
179 break;
180 default:
181 return (EINVAL);
182 }
183
184 /*
185 * We set the state using PCI Power Management outside of setting
186 * the ACPI state. This means that when powering down a device, we
187 * first shut it down using PCI, and then using ACPI, which lets ACPI
188 * try to power down any Power Resources that are now no longer used.
189 * When powering up a device, we let ACPI set the state first so that
190 * it can enable any needed Power Resources before changing the PCI
191 * power state.
192 */
193 old_state = pci_get_powerstate(child);
194 if (old_state < state) {
195 error = pci_set_powerstate_method(dev, child, state);
196 if (error)
197 return (error);
198 }
199 status = acpi_pwr_switch_consumer(acpi_get_handle(child), acpi_state);
200 if (ACPI_FAILURE(status))
201 device_printf(dev,
202 "Failed to set ACPI power state D%d on %s: %s\n",
203 acpi_state, device_get_nameunit(child),
204 AcpiFormatException(status));
205 if (state > old_state)
206 return (pci_set_powerstate_method(dev, child, state));
207 else
208 return (0);
209}
210
211static ACPI_STATUS
212acpi_pci_save_handle(ACPI_HANDLE handle, UINT32 level, void *context,
213 void **status)
214{
215 struct acpi_pci_devinfo *dinfo;
216 device_t *devlist;
217 int devcount, i, func, slot;
218 UINT32 address;
219
220 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
221
222 if (ACPI_FAILURE(acpi_GetInteger(handle, "_ADR", &address)))
223 return_ACPI_STATUS(AE_OK);
224 slot = address >> 16;
225 func = address & 0xffff;
226 if (device_get_children((device_t)context, &devlist, &devcount) != 0)
227 return_ACPI_STATUS(AE_OK);
228 for (i = 0; i < devcount; i++) {
229 dinfo = device_get_ivars(devlist[i]);
230 if (dinfo->ap_dinfo.cfg.func == func &&
231 dinfo->ap_dinfo.cfg.slot == slot) {
232 dinfo->ap_handle = handle;
233 free(devlist, M_TEMP);
234 return_ACPI_STATUS(AE_OK);
235 }
236 }
237 free(devlist, M_TEMP);
238 return_ACPI_STATUS(AE_OK);
239}
240
241static int
242acpi_pci_probe(device_t dev)
243{
244
245 if (pcib_get_bus(dev) < 0)
246 return (ENXIO);
247
248 device_set_desc(dev, "ACPI PCI bus");
249
250 if (acpi_get_handle(dev) == NULL)
251 return (ENXIO);
252 return (0);
253}
254
255static int
256acpi_pci_attach(device_t dev)
257{
258 int busno;
259
260 /*
261 * Since there can be multiple independantly numbered PCI
262 * busses on some large alpha systems, we can't use the unit
263 * number to decide what bus we are probing. We ask the parent
264 * pcib what our bus number is.
265 */
266 busno = pcib_get_bus(dev);
267 if (bootverbose)
268 device_printf(dev, "physical bus=%d\n", busno);
269
270 /*
271 * First, PCI devices are added as in the normal PCI bus driver.
272 * Afterwards, the ACPI namespace under the bridge driver is
273 * walked to save ACPI handles to all the devices that appear in
274 * the ACPI namespace as immediate descendants of the bridge.
275 *
276 * XXX: Sometimes PCI devices show up in the ACPI namespace that
277 * pci_add_children() doesn't find. We currently just ignore
278 * these devices.
279 */
280 pci_add_children(dev, busno, sizeof(struct acpi_pci_devinfo));
281 (void) AcpiWalkNamespace(ACPI_TYPE_DEVICE, acpi_get_handle(dev), 1,
282 acpi_pci_save_handle, dev, NULL);
283
284 return (bus_generic_attach(dev));
285}
2 * Copyright (c) 1997, Stefan Esser <se@freebsd.org>
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 unmodified, this list of conditions, and the following
12 * disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD: head/sys/dev/acpica/acpi_pci.c 128016 2004-04-07 19:42:21Z jhb $");
31
32#include "opt_bus.h"
33
34#include <sys/param.h>
35#include <sys/systm.h>
36#include <sys/bus.h>
37#include <sys/kernel.h>
38#include <sys/malloc.h>
39#include <sys/module.h>
40
41#include "acpi.h"
42
43#include <dev/acpica/acpivar.h>
44
45#include <sys/pciio.h>
46#include <dev/pci/pcireg.h>
47#include <dev/pci/pcivar.h>
48#include <dev/pci/pci_private.h>
49
50#include "pcib_if.h"
51#include "pci_if.h"
52
53/*
54 * Hooks for the ACPI CA debugging infrastructure
55 */
56#define _COMPONENT ACPI_BUS
57ACPI_MODULE_NAME("PCI")
58
59struct acpi_pci_devinfo {
60 struct pci_devinfo ap_dinfo;
61 ACPI_HANDLE ap_handle;
62};
63
64static int acpi_pci_probe(device_t dev);
65static int acpi_pci_attach(device_t dev);
66static int acpi_pci_read_ivar(device_t dev, device_t child, int which,
67 uintptr_t *result);
68static int acpi_pci_child_location_str_method(device_t cbdev,
69 device_t child, char *buf, size_t buflen);
70
71
72static int acpi_pci_set_powerstate_method(device_t dev, device_t child,
73 int state);
74static ACPI_STATUS acpi_pci_save_handle(ACPI_HANDLE handle, UINT32 level,
75 void *context, void **status);
76
77static device_method_t acpi_pci_methods[] = {
78 /* Device interface */
79 DEVMETHOD(device_probe, acpi_pci_probe),
80 DEVMETHOD(device_attach, acpi_pci_attach),
81 DEVMETHOD(device_shutdown, bus_generic_shutdown),
82 DEVMETHOD(device_suspend, bus_generic_suspend),
83 DEVMETHOD(device_resume, pci_resume),
84
85 /* Bus interface */
86 DEVMETHOD(bus_print_child, pci_print_child),
87 DEVMETHOD(bus_probe_nomatch, pci_probe_nomatch),
88 DEVMETHOD(bus_read_ivar, acpi_pci_read_ivar),
89 DEVMETHOD(bus_write_ivar, pci_write_ivar),
90 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
91 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
92 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
93
94 DEVMETHOD(bus_get_resource_list,pci_get_resource_list),
95 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
96 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
97 DEVMETHOD(bus_delete_resource, pci_delete_resource),
98 DEVMETHOD(bus_alloc_resource, pci_alloc_resource),
99 DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
100 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
101 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
102 DEVMETHOD(bus_child_pnpinfo_str, pci_child_pnpinfo_str_method),
103 DEVMETHOD(bus_child_location_str, acpi_pci_child_location_str_method),
104
105 /* PCI interface */
106 DEVMETHOD(pci_read_config, pci_read_config_method),
107 DEVMETHOD(pci_write_config, pci_write_config_method),
108 DEVMETHOD(pci_enable_busmaster, pci_enable_busmaster_method),
109 DEVMETHOD(pci_disable_busmaster, pci_disable_busmaster_method),
110 DEVMETHOD(pci_enable_io, pci_enable_io_method),
111 DEVMETHOD(pci_disable_io, pci_disable_io_method),
112 DEVMETHOD(pci_get_powerstate, pci_get_powerstate_method),
113 DEVMETHOD(pci_set_powerstate, acpi_pci_set_powerstate_method),
114 DEVMETHOD(pci_assign_interrupt, pci_assign_interrupt_method),
115
116 { 0, 0 }
117};
118
119static driver_t acpi_pci_driver = {
120 "pci",
121 acpi_pci_methods,
122 0, /* no softc */
123};
124
125DRIVER_MODULE(acpi_pci, pcib, acpi_pci_driver, pci_devclass, 0, 0);
126MODULE_VERSION(acpi_pci, 1);
127MODULE_DEPEND(acpi_pci, pci, 1, 1, 1);
128
129static int
130acpi_pci_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
131{
132 struct acpi_pci_devinfo *dinfo;
133
134 switch (which) {
135 case ACPI_IVAR_HANDLE:
136 dinfo = device_get_ivars(child);
137 *result = (uintptr_t)dinfo->ap_handle;
138 return (0);
139 }
140 return (pci_read_ivar(dev, child, which, result));
141}
142
143static int
144acpi_pci_child_location_str_method(device_t cbdev, device_t child, char *buf,
145 size_t buflen)
146{
147 struct acpi_pci_devinfo *dinfo = device_get_ivars(child);
148
149 pci_child_location_str_method(cbdev, child, buf, buflen);
150
151 if (dinfo->ap_handle) {
152 strlcat(buf, " path=", buflen);
153 strlcat(buf, acpi_name(dinfo->ap_handle), buflen);
154 }
155 return (0);
156}
157
158/*
159 * PCI power manangement
160 */
161static int
162acpi_pci_set_powerstate_method(device_t dev, device_t child, int state)
163{
164 ACPI_STATUS status;
165 int acpi_state, old_state, error;
166
167 switch (state) {
168 case PCI_POWERSTATE_D0:
169 acpi_state = ACPI_STATE_D0;
170 break;
171 case PCI_POWERSTATE_D1:
172 acpi_state = ACPI_STATE_D1;
173 break;
174 case PCI_POWERSTATE_D2:
175 acpi_state = ACPI_STATE_D2;
176 break;
177 case PCI_POWERSTATE_D3:
178 acpi_state = ACPI_STATE_D3;
179 break;
180 default:
181 return (EINVAL);
182 }
183
184 /*
185 * We set the state using PCI Power Management outside of setting
186 * the ACPI state. This means that when powering down a device, we
187 * first shut it down using PCI, and then using ACPI, which lets ACPI
188 * try to power down any Power Resources that are now no longer used.
189 * When powering up a device, we let ACPI set the state first so that
190 * it can enable any needed Power Resources before changing the PCI
191 * power state.
192 */
193 old_state = pci_get_powerstate(child);
194 if (old_state < state) {
195 error = pci_set_powerstate_method(dev, child, state);
196 if (error)
197 return (error);
198 }
199 status = acpi_pwr_switch_consumer(acpi_get_handle(child), acpi_state);
200 if (ACPI_FAILURE(status))
201 device_printf(dev,
202 "Failed to set ACPI power state D%d on %s: %s\n",
203 acpi_state, device_get_nameunit(child),
204 AcpiFormatException(status));
205 if (state > old_state)
206 return (pci_set_powerstate_method(dev, child, state));
207 else
208 return (0);
209}
210
211static ACPI_STATUS
212acpi_pci_save_handle(ACPI_HANDLE handle, UINT32 level, void *context,
213 void **status)
214{
215 struct acpi_pci_devinfo *dinfo;
216 device_t *devlist;
217 int devcount, i, func, slot;
218 UINT32 address;
219
220 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
221
222 if (ACPI_FAILURE(acpi_GetInteger(handle, "_ADR", &address)))
223 return_ACPI_STATUS(AE_OK);
224 slot = address >> 16;
225 func = address & 0xffff;
226 if (device_get_children((device_t)context, &devlist, &devcount) != 0)
227 return_ACPI_STATUS(AE_OK);
228 for (i = 0; i < devcount; i++) {
229 dinfo = device_get_ivars(devlist[i]);
230 if (dinfo->ap_dinfo.cfg.func == func &&
231 dinfo->ap_dinfo.cfg.slot == slot) {
232 dinfo->ap_handle = handle;
233 free(devlist, M_TEMP);
234 return_ACPI_STATUS(AE_OK);
235 }
236 }
237 free(devlist, M_TEMP);
238 return_ACPI_STATUS(AE_OK);
239}
240
241static int
242acpi_pci_probe(device_t dev)
243{
244
245 if (pcib_get_bus(dev) < 0)
246 return (ENXIO);
247
248 device_set_desc(dev, "ACPI PCI bus");
249
250 if (acpi_get_handle(dev) == NULL)
251 return (ENXIO);
252 return (0);
253}
254
255static int
256acpi_pci_attach(device_t dev)
257{
258 int busno;
259
260 /*
261 * Since there can be multiple independantly numbered PCI
262 * busses on some large alpha systems, we can't use the unit
263 * number to decide what bus we are probing. We ask the parent
264 * pcib what our bus number is.
265 */
266 busno = pcib_get_bus(dev);
267 if (bootverbose)
268 device_printf(dev, "physical bus=%d\n", busno);
269
270 /*
271 * First, PCI devices are added as in the normal PCI bus driver.
272 * Afterwards, the ACPI namespace under the bridge driver is
273 * walked to save ACPI handles to all the devices that appear in
274 * the ACPI namespace as immediate descendants of the bridge.
275 *
276 * XXX: Sometimes PCI devices show up in the ACPI namespace that
277 * pci_add_children() doesn't find. We currently just ignore
278 * these devices.
279 */
280 pci_add_children(dev, busno, sizeof(struct acpi_pci_devinfo));
281 (void) AcpiWalkNamespace(ACPI_TYPE_DEVICE, acpi_get_handle(dev), 1,
282 acpi_pci_save_handle, dev, NULL);
283
284 return (bus_generic_attach(dev));
285}