xref: /freebsd/sys/dev/acpica/acpi_pci.c (revision 28bf1fad05801dc07a56774fcafe9c48dbc6eccd)
128bf1fadSJohn Baldwin /*
228bf1fadSJohn Baldwin  * Copyright (c) 1997, Stefan Esser <se@freebsd.org>
328bf1fadSJohn Baldwin  * Copyright (c) 2000, Michael Smith <msmith@freebsd.org>
428bf1fadSJohn Baldwin  * Copyright (c) 2000, BSDi
528bf1fadSJohn Baldwin  * All rights reserved.
628bf1fadSJohn Baldwin  *
728bf1fadSJohn Baldwin  * Redistribution and use in source and binary forms, with or without
828bf1fadSJohn Baldwin  * modification, are permitted provided that the following conditions
928bf1fadSJohn Baldwin  * are met:
1028bf1fadSJohn Baldwin  * 1. Redistributions of source code must retain the above copyright
1128bf1fadSJohn Baldwin  *    notice unmodified, this list of conditions, and the following
1228bf1fadSJohn Baldwin  *    disclaimer.
1328bf1fadSJohn Baldwin  * 2. Redistributions in binary form must reproduce the above copyright
1428bf1fadSJohn Baldwin  *    notice, this list of conditions and the following disclaimer in the
1528bf1fadSJohn Baldwin  *    documentation and/or other materials provided with the distribution.
1628bf1fadSJohn Baldwin  *
1728bf1fadSJohn Baldwin  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
1828bf1fadSJohn Baldwin  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
1928bf1fadSJohn Baldwin  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
2028bf1fadSJohn Baldwin  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
2128bf1fadSJohn Baldwin  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
2228bf1fadSJohn Baldwin  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
2328bf1fadSJohn Baldwin  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
2428bf1fadSJohn Baldwin  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
2528bf1fadSJohn Baldwin  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
2628bf1fadSJohn Baldwin  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
2728bf1fadSJohn Baldwin  *
2828bf1fadSJohn Baldwin  * $FreeBSD$
2928bf1fadSJohn Baldwin  *
3028bf1fadSJohn Baldwin  */
3128bf1fadSJohn Baldwin 
3228bf1fadSJohn Baldwin #include "opt_bus.h"
3328bf1fadSJohn Baldwin 
3428bf1fadSJohn Baldwin #include <sys/param.h>
3528bf1fadSJohn Baldwin #include <sys/systm.h>
3628bf1fadSJohn Baldwin #include <sys/bus.h>
3728bf1fadSJohn Baldwin #include <sys/kernel.h>
3828bf1fadSJohn Baldwin #include <sys/malloc.h>
3928bf1fadSJohn Baldwin #include <sys/module.h>
4028bf1fadSJohn Baldwin 
4128bf1fadSJohn Baldwin #include "acpi.h"
4228bf1fadSJohn Baldwin 
4328bf1fadSJohn Baldwin #include <dev/acpica/acpivar.h>
4428bf1fadSJohn Baldwin 
4528bf1fadSJohn Baldwin #include <sys/pciio.h>
4628bf1fadSJohn Baldwin #include <dev/pci/pcireg.h>
4728bf1fadSJohn Baldwin #include <dev/pci/pcivar.h>
4828bf1fadSJohn Baldwin #include <dev/pci/pci_private.h>
4928bf1fadSJohn Baldwin 
5028bf1fadSJohn Baldwin #include "pcib_if.h"
5128bf1fadSJohn Baldwin #include "pci_if.h"
5228bf1fadSJohn Baldwin 
5328bf1fadSJohn Baldwin /*
5428bf1fadSJohn Baldwin  * Hooks for the ACPI CA debugging infrastructure
5528bf1fadSJohn Baldwin  */
5628bf1fadSJohn Baldwin #define _COMPONENT	ACPI_BUS
5728bf1fadSJohn Baldwin ACPI_MODULE_NAME("PCI")
5828bf1fadSJohn Baldwin 
5928bf1fadSJohn Baldwin struct acpi_pci_devinfo {
6028bf1fadSJohn Baldwin 	struct pci_devinfo ap_dinfo;
6128bf1fadSJohn Baldwin 	ACPI_HANDLE	ap_handle;
6228bf1fadSJohn Baldwin };
6328bf1fadSJohn Baldwin 
6428bf1fadSJohn Baldwin static int	acpi_pci_probe(device_t dev);
6528bf1fadSJohn Baldwin static int	acpi_pci_attach(device_t dev);
6628bf1fadSJohn Baldwin static int	acpi_pci_read_ivar(device_t dev, device_t child, int which,
6728bf1fadSJohn Baldwin     uintptr_t *result);
6828bf1fadSJohn Baldwin #if 0
6928bf1fadSJohn Baldwin static int	acpi_pci_set_powerstate_method(device_t dev, device_t child,
7028bf1fadSJohn Baldwin     int state);
7128bf1fadSJohn Baldwin static int	acpi_pci_get_powerstate_method(device_t dev, device_t child);
7228bf1fadSJohn Baldwin #endif
7328bf1fadSJohn Baldwin static ACPI_STATUS acpi_pci_save_handle(ACPI_HANDLE handle, UINT32 level,
7428bf1fadSJohn Baldwin     void *context, void **status);
7528bf1fadSJohn Baldwin 
7628bf1fadSJohn Baldwin static device_method_t acpi_pci_methods[] = {
7728bf1fadSJohn Baldwin 	/* Device interface */
7828bf1fadSJohn Baldwin 	DEVMETHOD(device_probe,		acpi_pci_probe),
7928bf1fadSJohn Baldwin 	DEVMETHOD(device_attach,	acpi_pci_attach),
8028bf1fadSJohn Baldwin 	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
8128bf1fadSJohn Baldwin 	DEVMETHOD(device_suspend,	bus_generic_suspend),
8228bf1fadSJohn Baldwin 	DEVMETHOD(device_resume,	bus_generic_resume),
8328bf1fadSJohn Baldwin 
8428bf1fadSJohn Baldwin 	/* Bus interface */
8528bf1fadSJohn Baldwin 	DEVMETHOD(bus_print_child,	pci_print_child),
8628bf1fadSJohn Baldwin 	DEVMETHOD(bus_probe_nomatch,	pci_probe_nomatch),
8728bf1fadSJohn Baldwin 	DEVMETHOD(bus_read_ivar,	acpi_pci_read_ivar),
8828bf1fadSJohn Baldwin 	DEVMETHOD(bus_write_ivar,	pci_write_ivar),
8928bf1fadSJohn Baldwin 	DEVMETHOD(bus_driver_added,	bus_generic_driver_added),
9028bf1fadSJohn Baldwin 	DEVMETHOD(bus_setup_intr,	bus_generic_setup_intr),
9128bf1fadSJohn Baldwin 	DEVMETHOD(bus_teardown_intr,	bus_generic_teardown_intr),
9228bf1fadSJohn Baldwin 
9328bf1fadSJohn Baldwin 	DEVMETHOD(bus_get_resource_list,pci_get_resource_list),
9428bf1fadSJohn Baldwin 	DEVMETHOD(bus_set_resource,	bus_generic_rl_set_resource),
9528bf1fadSJohn Baldwin 	DEVMETHOD(bus_get_resource,	bus_generic_rl_get_resource),
9628bf1fadSJohn Baldwin 	DEVMETHOD(bus_delete_resource,	pci_delete_resource),
9728bf1fadSJohn Baldwin 	DEVMETHOD(bus_alloc_resource,	pci_alloc_resource),
9828bf1fadSJohn Baldwin 	DEVMETHOD(bus_release_resource,	bus_generic_rl_release_resource),
9928bf1fadSJohn Baldwin 	DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
10028bf1fadSJohn Baldwin 	DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
10128bf1fadSJohn Baldwin 
10228bf1fadSJohn Baldwin 	/* PCI interface */
10328bf1fadSJohn Baldwin 	DEVMETHOD(pci_read_config,	pci_read_config_method),
10428bf1fadSJohn Baldwin 	DEVMETHOD(pci_write_config,	pci_write_config_method),
10528bf1fadSJohn Baldwin 	DEVMETHOD(pci_enable_busmaster,	pci_enable_busmaster_method),
10628bf1fadSJohn Baldwin 	DEVMETHOD(pci_disable_busmaster, pci_disable_busmaster_method),
10728bf1fadSJohn Baldwin 	DEVMETHOD(pci_enable_io,	pci_enable_io_method),
10828bf1fadSJohn Baldwin 	DEVMETHOD(pci_disable_io,	pci_disable_io_method),
10928bf1fadSJohn Baldwin 	/* XXX: We should override these two. */
11028bf1fadSJohn Baldwin 	DEVMETHOD(pci_get_powerstate,	pci_get_powerstate_method),
11128bf1fadSJohn Baldwin 	DEVMETHOD(pci_set_powerstate,	pci_set_powerstate_method),
11228bf1fadSJohn Baldwin 
11328bf1fadSJohn Baldwin 	{ 0, 0 }
11428bf1fadSJohn Baldwin };
11528bf1fadSJohn Baldwin 
11628bf1fadSJohn Baldwin static driver_t acpi_pci_driver = {
11728bf1fadSJohn Baldwin 	"pci",
11828bf1fadSJohn Baldwin 	acpi_pci_methods,
11928bf1fadSJohn Baldwin 	0,			/* no softc */
12028bf1fadSJohn Baldwin };
12128bf1fadSJohn Baldwin 
12228bf1fadSJohn Baldwin DRIVER_MODULE(acpi_pci, pcib, acpi_pci_driver, pci_devclass, 0, 0);
12328bf1fadSJohn Baldwin MODULE_VERSION(acpi_pci, 1);
12428bf1fadSJohn Baldwin MODULE_DEPEND(acpi_pci, pci, 1, 1, 1);
12528bf1fadSJohn Baldwin 
12628bf1fadSJohn Baldwin static int
12728bf1fadSJohn Baldwin acpi_pci_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
12828bf1fadSJohn Baldwin {
12928bf1fadSJohn Baldwin     struct acpi_pci_devinfo *dinfo;
13028bf1fadSJohn Baldwin 
13128bf1fadSJohn Baldwin     switch (which) {
13228bf1fadSJohn Baldwin     case  ACPI_IVAR_HANDLE:
13328bf1fadSJohn Baldwin 	dinfo = device_get_ivars(child);
13428bf1fadSJohn Baldwin 	*result = (uintptr_t)dinfo->ap_handle;
13528bf1fadSJohn Baldwin 	return(0);
13628bf1fadSJohn Baldwin     }
13728bf1fadSJohn Baldwin     return(pci_read_ivar(dev, child, which, result));
13828bf1fadSJohn Baldwin }
13928bf1fadSJohn Baldwin 
14028bf1fadSJohn Baldwin #if 0
14128bf1fadSJohn Baldwin /*
14228bf1fadSJohn Baldwin  * PCI power manangement
14328bf1fadSJohn Baldwin  */
14428bf1fadSJohn Baldwin static int
14528bf1fadSJohn Baldwin acpi_pci_set_powerstate_method(device_t dev, device_t child, int state)
14628bf1fadSJohn Baldwin {
14728bf1fadSJohn Baldwin 	/* XXX: TODO */
14828bf1fadSJohn Baldwin 	return (ENXIO);
14928bf1fadSJohn Baldwin }
15028bf1fadSJohn Baldwin 
15128bf1fadSJohn Baldwin static int
15228bf1fadSJohn Baldwin acpi_pci_get_powerstate_method(device_t dev, device_t child)
15328bf1fadSJohn Baldwin {
15428bf1fadSJohn Baldwin 	/* XXX: TODO */
15528bf1fadSJohn Baldwin 	return (ENXIO);
15628bf1fadSJohn Baldwin }
15728bf1fadSJohn Baldwin #endif
15828bf1fadSJohn Baldwin 
15928bf1fadSJohn Baldwin static ACPI_STATUS
16028bf1fadSJohn Baldwin acpi_pci_save_handle(ACPI_HANDLE handle, UINT32 level, void *context,
16128bf1fadSJohn Baldwin     void **status)
16228bf1fadSJohn Baldwin {
16328bf1fadSJohn Baldwin 	struct acpi_pci_devinfo *dinfo;
16428bf1fadSJohn Baldwin 	device_t *devlist;
16528bf1fadSJohn Baldwin 	int devcount, i, func, slot;
16628bf1fadSJohn Baldwin 	UINT32 address;
16728bf1fadSJohn Baldwin 
16828bf1fadSJohn Baldwin 	ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
16928bf1fadSJohn Baldwin 
17028bf1fadSJohn Baldwin 	if (ACPI_FAILURE(acpi_EvaluateInteger(handle, "_ADR", &address)))
17128bf1fadSJohn Baldwin 		return_ACPI_STATUS(AE_OK);
17228bf1fadSJohn Baldwin 	slot = address >> 16;
17328bf1fadSJohn Baldwin 	func = address & 0xffff;
17428bf1fadSJohn Baldwin 	if (device_get_children((device_t)context, &devlist, &devcount) != 0)
17528bf1fadSJohn Baldwin 		return_ACPI_STATUS(AE_OK);
17628bf1fadSJohn Baldwin 	for (i = 0; i < devcount; i++) {
17728bf1fadSJohn Baldwin 		dinfo = device_get_ivars(devlist[i]);
17828bf1fadSJohn Baldwin 		if (dinfo->ap_dinfo.cfg.func == func &&
17928bf1fadSJohn Baldwin 		    dinfo->ap_dinfo.cfg.slot == slot) {
18028bf1fadSJohn Baldwin 			dinfo->ap_handle = handle;
18128bf1fadSJohn Baldwin 			free(devlist, M_TEMP);
18228bf1fadSJohn Baldwin 			return_ACPI_STATUS(AE_OK);
18328bf1fadSJohn Baldwin 		}
18428bf1fadSJohn Baldwin 	}
18528bf1fadSJohn Baldwin 	free(devlist, M_TEMP);
18628bf1fadSJohn Baldwin 	return_ACPI_STATUS(AE_OK);
18728bf1fadSJohn Baldwin }
18828bf1fadSJohn Baldwin 
18928bf1fadSJohn Baldwin static int
19028bf1fadSJohn Baldwin acpi_pci_probe(device_t dev)
19128bf1fadSJohn Baldwin {
19228bf1fadSJohn Baldwin 
19328bf1fadSJohn Baldwin 	if (pcib_get_bus(dev) < 0)
19428bf1fadSJohn Baldwin 		return (ENXIO);
19528bf1fadSJohn Baldwin 
19628bf1fadSJohn Baldwin 	device_set_desc(dev, "ACPI PCI bus");
19728bf1fadSJohn Baldwin 
19828bf1fadSJohn Baldwin 	if (acpi_get_handle(dev) == NULL)
19928bf1fadSJohn Baldwin 		return (ENXIO);
20028bf1fadSJohn Baldwin 	return (0);
20128bf1fadSJohn Baldwin }
20228bf1fadSJohn Baldwin 
20328bf1fadSJohn Baldwin static int
20428bf1fadSJohn Baldwin acpi_pci_attach(device_t dev)
20528bf1fadSJohn Baldwin {
20628bf1fadSJohn Baldwin 	int busno;
20728bf1fadSJohn Baldwin 
20828bf1fadSJohn Baldwin 	/*
20928bf1fadSJohn Baldwin 	 * Since there can be multiple independantly numbered PCI
21028bf1fadSJohn Baldwin 	 * busses on some large alpha systems, we can't use the unit
21128bf1fadSJohn Baldwin 	 * number to decide what bus we are probing. We ask the parent
21228bf1fadSJohn Baldwin 	 * pcib what our bus number is.
21328bf1fadSJohn Baldwin 	 */
21428bf1fadSJohn Baldwin 	busno = pcib_get_bus(dev);
21528bf1fadSJohn Baldwin 	if (bootverbose)
21628bf1fadSJohn Baldwin 		device_printf(dev, "physical bus=%d\n", busno);
21728bf1fadSJohn Baldwin 
21828bf1fadSJohn Baldwin 	/*
21928bf1fadSJohn Baldwin 	 * First, PCI devices are added as in the normal PCI bus driver.
22028bf1fadSJohn Baldwin 	 * Afterwards, the ACPI namespace under the bridge driver is
22128bf1fadSJohn Baldwin 	 * walked to save ACPI handles to all the devices that appear in
22228bf1fadSJohn Baldwin 	 * the ACPI namespace as immediate descendants of the bridge.
22328bf1fadSJohn Baldwin 	 *
22428bf1fadSJohn Baldwin 	 * XXX: Sometimes PCI devices show up in the ACPI namespace that
22528bf1fadSJohn Baldwin 	 * pci_add_children() doesn't find.  We currently just ignore
22628bf1fadSJohn Baldwin 	 * these devices.
22728bf1fadSJohn Baldwin 	 */
22828bf1fadSJohn Baldwin 	pci_add_children(dev, busno, sizeof(struct acpi_pci_devinfo));
22928bf1fadSJohn Baldwin 
23028bf1fadSJohn Baldwin 	(void) AcpiWalkNamespace(ACPI_TYPE_DEVICE, acpi_get_handle(dev), 1,
23128bf1fadSJohn Baldwin 	    acpi_pci_save_handle, dev, NULL);
23228bf1fadSJohn Baldwin 
23328bf1fadSJohn Baldwin 	pci_load_vendor_data();
23428bf1fadSJohn Baldwin 	return (bus_generic_attach(dev));
23528bf1fadSJohn Baldwin }
236