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>
| 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>
|
31
32#include <sys/param.h>
33#include <sys/systm.h>
34#include <sys/bus.h>
35#include <sys/kernel.h>
36#include <sys/malloc.h>
37#include <sys/module.h>
38
39#include "acpi.h"
40#include <dev/acpica/acpivar.h>
41
42#include <sys/pciio.h>
43#include <dev/pci/pcireg.h>
44#include <dev/pci/pcivar.h>
45#include <dev/pci/pci_private.h>
46
47#include "pcib_if.h"
48#include "pci_if.h"
49
50/* Hooks for the ACPI CA debugging infrastructure. */
51#define _COMPONENT ACPI_BUS
52ACPI_MODULE_NAME("PCI")
53
54struct acpi_pci_devinfo {
55 struct pci_devinfo ap_dinfo;
56 ACPI_HANDLE ap_handle;
57};
58
59static int acpi_pci_probe(device_t dev);
60static int acpi_pci_attach(device_t dev);
61static int acpi_pci_read_ivar(device_t dev, device_t child, int which,
62 uintptr_t *result);
63static int acpi_pci_child_location_str_method(device_t cbdev,
64 device_t child, char *buf, size_t buflen);
65
66
67static int acpi_pci_set_powerstate_method(device_t dev, device_t child,
68 int state);
69static ACPI_STATUS acpi_pci_save_handle(ACPI_HANDLE handle, UINT32 level,
70 void *context, void **status);
71
72static device_method_t acpi_pci_methods[] = {
73 /* Device interface */
74 DEVMETHOD(device_probe, acpi_pci_probe),
75 DEVMETHOD(device_attach, acpi_pci_attach),
76 DEVMETHOD(device_shutdown, bus_generic_shutdown),
77 DEVMETHOD(device_suspend, pci_suspend),
78 DEVMETHOD(device_resume, pci_resume),
79
80 /* Bus interface */
81 DEVMETHOD(bus_print_child, pci_print_child),
82 DEVMETHOD(bus_probe_nomatch, pci_probe_nomatch),
83 DEVMETHOD(bus_read_ivar, acpi_pci_read_ivar),
84 DEVMETHOD(bus_write_ivar, pci_write_ivar),
85 DEVMETHOD(bus_driver_added, pci_driver_added),
86 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
87 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
88
89 DEVMETHOD(bus_get_resource_list,pci_get_resource_list),
90 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
91 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
92 DEVMETHOD(bus_delete_resource, pci_delete_resource),
93 DEVMETHOD(bus_alloc_resource, pci_alloc_resource),
94 DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
95 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
96 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
97 DEVMETHOD(bus_child_pnpinfo_str, pci_child_pnpinfo_str_method),
98 DEVMETHOD(bus_child_location_str, acpi_pci_child_location_str_method),
99
100 /* PCI interface */
101 DEVMETHOD(pci_read_config, pci_read_config_method),
102 DEVMETHOD(pci_write_config, pci_write_config_method),
103 DEVMETHOD(pci_enable_busmaster, pci_enable_busmaster_method),
104 DEVMETHOD(pci_disable_busmaster, pci_disable_busmaster_method),
105 DEVMETHOD(pci_enable_io, pci_enable_io_method),
106 DEVMETHOD(pci_disable_io, pci_disable_io_method),
107 DEVMETHOD(pci_get_powerstate, pci_get_powerstate_method),
108 DEVMETHOD(pci_set_powerstate, acpi_pci_set_powerstate_method),
109 DEVMETHOD(pci_assign_interrupt, pci_assign_interrupt_method),
110
111 { 0, 0 }
112};
113
114static driver_t acpi_pci_driver = {
115 "pci",
116 acpi_pci_methods,
117 0, /* no softc */
118};
119
120DRIVER_MODULE(acpi_pci, pcib, acpi_pci_driver, pci_devclass, 0, 0);
121MODULE_DEPEND(acpi_pci, acpi, 1, 1, 1);
122MODULE_DEPEND(acpi_pci, pci, 1, 1, 1);
123MODULE_VERSION(acpi_pci, 1);
124
125static int
126acpi_pci_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
127{
128 struct acpi_pci_devinfo *dinfo;
129
130 switch (which) {
131 case ACPI_IVAR_HANDLE:
132 dinfo = device_get_ivars(child);
133 *result = (uintptr_t)dinfo->ap_handle;
134 return (0);
135 }
136 return (pci_read_ivar(dev, child, which, result));
137}
138
139static int
140acpi_pci_child_location_str_method(device_t cbdev, device_t child, char *buf,
141 size_t buflen)
142{
143 struct acpi_pci_devinfo *dinfo = device_get_ivars(child);
144
145 pci_child_location_str_method(cbdev, child, buf, buflen);
146
147 if (dinfo->ap_handle) {
148 strlcat(buf, " path=", buflen);
149 strlcat(buf, acpi_name(dinfo->ap_handle), buflen);
150 }
151 return (0);
152}
153
154/*
155 * PCI power manangement
156 */
157static int
158acpi_pci_set_powerstate_method(device_t dev, device_t child, int state)
159{
160 ACPI_HANDLE h;
161 ACPI_STATUS status;
162 int acpi_state, old_state, error;
163
164 switch (state) {
165 case PCI_POWERSTATE_D0:
166 acpi_state = ACPI_STATE_D0;
167 break;
168 case PCI_POWERSTATE_D1:
169 acpi_state = ACPI_STATE_D1;
170 break;
171 case PCI_POWERSTATE_D2:
172 acpi_state = ACPI_STATE_D2;
173 break;
174 case PCI_POWERSTATE_D3:
175 acpi_state = ACPI_STATE_D3;
176 break;
177 default:
178 return (EINVAL);
179 }
180
181 /*
182 * We set the state using PCI Power Management outside of setting
183 * the ACPI state. This means that when powering down a device, we
184 * first shut it down using PCI, and then using ACPI, which lets ACPI
185 * try to power down any Power Resources that are now no longer used.
186 * When powering up a device, we let ACPI set the state first so that
187 * it can enable any needed Power Resources before changing the PCI
188 * power state.
189 */
190 old_state = pci_get_powerstate(child);
191 if (old_state < state) {
192 error = pci_set_powerstate_method(dev, child, state);
193 if (error)
194 return (error);
195 }
| 31
32#include <sys/param.h>
33#include <sys/systm.h>
34#include <sys/bus.h>
35#include <sys/kernel.h>
36#include <sys/malloc.h>
37#include <sys/module.h>
38
39#include "acpi.h"
40#include <dev/acpica/acpivar.h>
41
42#include <sys/pciio.h>
43#include <dev/pci/pcireg.h>
44#include <dev/pci/pcivar.h>
45#include <dev/pci/pci_private.h>
46
47#include "pcib_if.h"
48#include "pci_if.h"
49
50/* Hooks for the ACPI CA debugging infrastructure. */
51#define _COMPONENT ACPI_BUS
52ACPI_MODULE_NAME("PCI")
53
54struct acpi_pci_devinfo {
55 struct pci_devinfo ap_dinfo;
56 ACPI_HANDLE ap_handle;
57};
58
59static int acpi_pci_probe(device_t dev);
60static int acpi_pci_attach(device_t dev);
61static int acpi_pci_read_ivar(device_t dev, device_t child, int which,
62 uintptr_t *result);
63static int acpi_pci_child_location_str_method(device_t cbdev,
64 device_t child, char *buf, size_t buflen);
65
66
67static int acpi_pci_set_powerstate_method(device_t dev, device_t child,
68 int state);
69static ACPI_STATUS acpi_pci_save_handle(ACPI_HANDLE handle, UINT32 level,
70 void *context, void **status);
71
72static device_method_t acpi_pci_methods[] = {
73 /* Device interface */
74 DEVMETHOD(device_probe, acpi_pci_probe),
75 DEVMETHOD(device_attach, acpi_pci_attach),
76 DEVMETHOD(device_shutdown, bus_generic_shutdown),
77 DEVMETHOD(device_suspend, pci_suspend),
78 DEVMETHOD(device_resume, pci_resume),
79
80 /* Bus interface */
81 DEVMETHOD(bus_print_child, pci_print_child),
82 DEVMETHOD(bus_probe_nomatch, pci_probe_nomatch),
83 DEVMETHOD(bus_read_ivar, acpi_pci_read_ivar),
84 DEVMETHOD(bus_write_ivar, pci_write_ivar),
85 DEVMETHOD(bus_driver_added, pci_driver_added),
86 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
87 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
88
89 DEVMETHOD(bus_get_resource_list,pci_get_resource_list),
90 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
91 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
92 DEVMETHOD(bus_delete_resource, pci_delete_resource),
93 DEVMETHOD(bus_alloc_resource, pci_alloc_resource),
94 DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
95 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
96 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
97 DEVMETHOD(bus_child_pnpinfo_str, pci_child_pnpinfo_str_method),
98 DEVMETHOD(bus_child_location_str, acpi_pci_child_location_str_method),
99
100 /* PCI interface */
101 DEVMETHOD(pci_read_config, pci_read_config_method),
102 DEVMETHOD(pci_write_config, pci_write_config_method),
103 DEVMETHOD(pci_enable_busmaster, pci_enable_busmaster_method),
104 DEVMETHOD(pci_disable_busmaster, pci_disable_busmaster_method),
105 DEVMETHOD(pci_enable_io, pci_enable_io_method),
106 DEVMETHOD(pci_disable_io, pci_disable_io_method),
107 DEVMETHOD(pci_get_powerstate, pci_get_powerstate_method),
108 DEVMETHOD(pci_set_powerstate, acpi_pci_set_powerstate_method),
109 DEVMETHOD(pci_assign_interrupt, pci_assign_interrupt_method),
110
111 { 0, 0 }
112};
113
114static driver_t acpi_pci_driver = {
115 "pci",
116 acpi_pci_methods,
117 0, /* no softc */
118};
119
120DRIVER_MODULE(acpi_pci, pcib, acpi_pci_driver, pci_devclass, 0, 0);
121MODULE_DEPEND(acpi_pci, acpi, 1, 1, 1);
122MODULE_DEPEND(acpi_pci, pci, 1, 1, 1);
123MODULE_VERSION(acpi_pci, 1);
124
125static int
126acpi_pci_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
127{
128 struct acpi_pci_devinfo *dinfo;
129
130 switch (which) {
131 case ACPI_IVAR_HANDLE:
132 dinfo = device_get_ivars(child);
133 *result = (uintptr_t)dinfo->ap_handle;
134 return (0);
135 }
136 return (pci_read_ivar(dev, child, which, result));
137}
138
139static int
140acpi_pci_child_location_str_method(device_t cbdev, device_t child, char *buf,
141 size_t buflen)
142{
143 struct acpi_pci_devinfo *dinfo = device_get_ivars(child);
144
145 pci_child_location_str_method(cbdev, child, buf, buflen);
146
147 if (dinfo->ap_handle) {
148 strlcat(buf, " path=", buflen);
149 strlcat(buf, acpi_name(dinfo->ap_handle), buflen);
150 }
151 return (0);
152}
153
154/*
155 * PCI power manangement
156 */
157static int
158acpi_pci_set_powerstate_method(device_t dev, device_t child, int state)
159{
160 ACPI_HANDLE h;
161 ACPI_STATUS status;
162 int acpi_state, old_state, error;
163
164 switch (state) {
165 case PCI_POWERSTATE_D0:
166 acpi_state = ACPI_STATE_D0;
167 break;
168 case PCI_POWERSTATE_D1:
169 acpi_state = ACPI_STATE_D1;
170 break;
171 case PCI_POWERSTATE_D2:
172 acpi_state = ACPI_STATE_D2;
173 break;
174 case PCI_POWERSTATE_D3:
175 acpi_state = ACPI_STATE_D3;
176 break;
177 default:
178 return (EINVAL);
179 }
180
181 /*
182 * We set the state using PCI Power Management outside of setting
183 * the ACPI state. This means that when powering down a device, we
184 * first shut it down using PCI, and then using ACPI, which lets ACPI
185 * try to power down any Power Resources that are now no longer used.
186 * When powering up a device, we let ACPI set the state first so that
187 * it can enable any needed Power Resources before changing the PCI
188 * power state.
189 */
190 old_state = pci_get_powerstate(child);
191 if (old_state < state) {
192 error = pci_set_powerstate_method(dev, child, state);
193 if (error)
194 return (error);
195 }
|
205 if (old_state > 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 if (acpi_get_handle(dev) == NULL)
248 return (ENXIO);
249 device_set_desc(dev, "ACPI PCI bus");
250 return (0);
251}
252
253static int
254acpi_pci_attach(device_t dev)
255{
256 int busno;
257
258 /*
259 * Since there can be multiple independantly numbered PCI
260 * busses on some large alpha systems, we can't use the unit
261 * number to decide what bus we are probing. We ask the parent
262 * pcib what our bus number is.
263 */
264 busno = pcib_get_bus(dev);
265 if (bootverbose)
266 device_printf(dev, "physical bus=%d\n", busno);
267
268 /*
269 * First, PCI devices are added as in the normal PCI bus driver.
270 * Afterwards, the ACPI namespace under the bridge driver is
271 * walked to save ACPI handles to all the devices that appear in
272 * the ACPI namespace as immediate descendants of the bridge.
273 *
274 * XXX: Sometimes PCI devices show up in the ACPI namespace that
275 * pci_add_children() doesn't find. We currently just ignore
276 * these devices.
277 */
278 pci_add_children(dev, busno, sizeof(struct acpi_pci_devinfo));
279 AcpiWalkNamespace(ACPI_TYPE_DEVICE, acpi_get_handle(dev), 1,
280 acpi_pci_save_handle, dev, NULL);
281
282 return (bus_generic_attach(dev));
283}
| 202 if (old_state > state)
203 return (pci_set_powerstate_method(dev, child, state));
204 else
205 return (0);
206}
207
208static ACPI_STATUS
209acpi_pci_save_handle(ACPI_HANDLE handle, UINT32 level, void *context,
210 void **status)
211{
212 struct acpi_pci_devinfo *dinfo;
213 device_t *devlist;
214 int devcount, i, func, slot;
215 UINT32 address;
216
217 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
218
219 if (ACPI_FAILURE(acpi_GetInteger(handle, "_ADR", &address)))
220 return_ACPI_STATUS (AE_OK);
221 slot = address >> 16;
222 func = address & 0xffff;
223 if (device_get_children((device_t)context, &devlist, &devcount) != 0)
224 return_ACPI_STATUS (AE_OK);
225 for (i = 0; i < devcount; i++) {
226 dinfo = device_get_ivars(devlist[i]);
227 if (dinfo->ap_dinfo.cfg.func == func &&
228 dinfo->ap_dinfo.cfg.slot == slot) {
229 dinfo->ap_handle = handle;
230 free(devlist, M_TEMP);
231 return_ACPI_STATUS (AE_OK);
232 }
233 }
234 free(devlist, M_TEMP);
235 return_ACPI_STATUS (AE_OK);
236}
237
238static int
239acpi_pci_probe(device_t dev)
240{
241
242 if (pcib_get_bus(dev) < 0)
243 return (ENXIO);
244 if (acpi_get_handle(dev) == NULL)
245 return (ENXIO);
246 device_set_desc(dev, "ACPI PCI bus");
247 return (0);
248}
249
250static int
251acpi_pci_attach(device_t dev)
252{
253 int busno;
254
255 /*
256 * Since there can be multiple independantly numbered PCI
257 * busses on some large alpha systems, we can't use the unit
258 * number to decide what bus we are probing. We ask the parent
259 * pcib what our bus number is.
260 */
261 busno = pcib_get_bus(dev);
262 if (bootverbose)
263 device_printf(dev, "physical bus=%d\n", busno);
264
265 /*
266 * First, PCI devices are added as in the normal PCI bus driver.
267 * Afterwards, the ACPI namespace under the bridge driver is
268 * walked to save ACPI handles to all the devices that appear in
269 * the ACPI namespace as immediate descendants of the bridge.
270 *
271 * XXX: Sometimes PCI devices show up in the ACPI namespace that
272 * pci_add_children() doesn't find. We currently just ignore
273 * these devices.
274 */
275 pci_add_children(dev, busno, sizeof(struct acpi_pci_devinfo));
276 AcpiWalkNamespace(ACPI_TYPE_DEVICE, acpi_get_handle(dev), 1,
277 acpi_pci_save_handle, dev, NULL);
278
279 return (bus_generic_attach(dev));
280}
|