NetBSD-5.0.2/sys/arch/i386/i386/mainbus.c
/* $NetBSD: mainbus.c,v 1.77 2008/05/18 02:06:14 jmcneill Exp $ */
/*
* Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christopher G. Demetriou
* for the NetBSD Project.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.77 2008/05/18 02:06:14 jmcneill Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/reboot.h>
#include <sys/bus.h>
#include <dev/isa/isavar.h>
#include <dev/eisa/eisavar.h>
#include <dev/pci/pcivar.h>
#include <dev/isa/isareg.h> /* for ISA_HOLE_VADDR */
#include "pci.h"
#include "eisa.h"
#include "isa.h"
#include "isadma.h"
#include "mca.h"
#include "apmbios.h"
#include "pnpbios.h"
#include "acpi.h"
#include "vesabios.h"
#include "ipmi.h"
#include "opt_acpi.h"
#include "opt_mpbios.h"
#include "opt_pcifixup.h"
#include <machine/cpuvar.h>
#include <machine/i82093var.h>
#include <machine/mpbiosvar.h>
#include <machine/mpacpi.h>
#if NAPMBIOS > 0
#include <machine/bioscall.h>
#include <machine/apmvar.h>
#endif
#if NPNPBIOS > 0
#include <arch/i386/pnpbios/pnpbiosvar.h>
#endif
#if NACPI > 0
#include <dev/acpi/acpivar.h>
#endif
#if NMCA > 0
#include <dev/mca/mcavar.h>
#endif
#if NVESABIOS > 0
#include <arch/i386/bios/vesabios.h>
#endif
#if NIPMI > 0
#include <x86/ipmivar.h>
#endif
#if NPCI > 0
#if defined(PCI_BUS_FIXUP)
#include <arch/x86/pci/pci_bus_fixup.h>
#if defined(PCI_ADDR_FIXUP)
#include <arch/x86/pci/pci_addr_fixup.h>
#endif
#endif
#endif
void mainbus_childdetached(device_t, device_t);
int mainbus_match(struct device *, struct cfdata *, void *);
void mainbus_attach(struct device *, struct device *, void *);
CFATTACH_DECL2_NEW(mainbus, 0,
mainbus_match, mainbus_attach, NULL, NULL, NULL, mainbus_childdetached);
int mainbus_print(void *, const char *);
union mainbus_attach_args {
const char *mba_busname; /* first elem of all */
struct pcibus_attach_args mba_pba;
struct eisabus_attach_args mba_eba;
struct isabus_attach_args mba_iba;
#if NMCA > 0
struct mcabus_attach_args mba_mba;
#endif
#if NPNPBIOS > 0
struct pnpbios_attach_args mba_paa;
#endif
struct cpu_attach_args mba_caa;
struct apic_attach_args aaa_caa;
#if NACPI > 0
struct acpibus_attach_args mba_acpi;
#endif
#if NIPMI > 0
struct ipmi_attach_args mba_ipmi;
#endif
};
/*
* This is set when the ISA bus is attached. If it's not set by the
* time it's checked below, then mainbus attempts to attach an ISA.
*/
int isa_has_been_seen;
struct x86_isa_chipset x86_isa_chipset;
#if NISA > 0
struct isabus_attach_args mba_iba = {
"isa",
X86_BUS_SPACE_IO, X86_BUS_SPACE_MEM,
&isa_bus_dma_tag,
&x86_isa_chipset
};
#endif
/*
* Same as above, but for EISA.
*/
int eisa_has_been_seen;
#if defined(MPBIOS) || NACPI > 0
struct mp_bus *mp_busses;
int mp_nbus;
struct mp_intr_map *mp_intrs;
int mp_nintr;
int mp_isa_bus = -1; /* XXX */
int mp_eisa_bus = -1; /* XXX */
#ifdef MPVERBOSE
int mp_verbose = 1;
#else
int mp_verbose = 0;
#endif
#endif
void
mainbus_childdetached(device_t self, device_t child)
{
/* mainbus holds no pointers to its children, so this is ok */
}
/*
* Probe for the mainbus; always succeeds.
*/
int
mainbus_match(struct device *parent, struct cfdata *match, void *aux)
{
return 1;
}
/*
* Attach the mainbus.
*/
void
mainbus_attach(struct device *parent, struct device *self, void *aux)
{
union mainbus_attach_args mba;
#if NACPI > 0
int acpi_present = 0;
#endif
#ifdef MPBIOS
int mpbios_present = 0;
#endif
#if NACPI > 0 || defined(MPBIOS)
int numioapics = 0;
#endif
#if defined(PCI_BUS_FIXUP)
int pci_maxbus = 0;
#endif
int mpacpi_active = 0;
int numcpus = 0;
aprint_naive("\n");
aprint_normal("\n");
#ifdef MPBIOS
mpbios_present = mpbios_probe(self);
#endif
#if NPCI > 0
/*
* ACPI needs to be able to access PCI configuration space.
*/
pci_mode = pci_mode_detect();
#if defined(PCI_BUS_FIXUP)
if (pci_mode != 0) {
pci_maxbus = pci_bus_fixup(NULL, 0);
aprint_debug("PCI bus max, after pci_bus_fixup: %i\n", pci_maxbus);
#if defined(PCI_ADDR_FIXUP)
pciaddr.extent_port = NULL;
pciaddr.extent_mem = NULL;
pci_addr_fixup(NULL, pci_maxbus);
#endif
}
#endif
#endif
#if NACPI > 0
if ((boothowto & RB_MD2) == 0 && acpi_check(self, "acpibus"))
acpi_present = acpi_probe();
/*
* First, see if the MADT contains CPUs, and possibly I/O APICs.
* Building the interrupt routing structures can only
* be done later (via a callback).
*/
if (acpi_present)
mpacpi_active = mpacpi_scan_apics(self, &numcpus, &numioapics);
#endif
if (!mpacpi_active) {
#ifdef MPBIOS
if (mpbios_present)
mpbios_scan(self, &numcpus, &numioapics);
else
#endif
if (numcpus == 0) {
struct cpu_attach_args caa;
memset(&caa, 0, sizeof(caa));
caa.cpu_number = 0;
caa.cpu_role = CPU_ROLE_SP;
caa.cpu_func = 0;
config_found_ia(self, "cpubus", &caa, mainbus_print);
}
}
#if NVESABIOS > 0
if (vbeprobe())
config_found_ia(self, "vesabiosbus", 0, 0);
#endif
#if NISADMA > 0 && (NACPI > 0 || NPNPBIOS > 0)
/*
* ACPI and PNPBIOS need ISA DMA initialized before they start probing.
*/
isa_dmainit(&x86_isa_chipset, X86_BUS_SPACE_IO, &isa_bus_dma_tag,
self);
#endif
#if NACPI > 0
if (acpi_present) {
mba.mba_acpi.aa_iot = X86_BUS_SPACE_IO;
mba.mba_acpi.aa_memt = X86_BUS_SPACE_MEM;
mba.mba_acpi.aa_pc = NULL;
mba.mba_acpi.aa_pciflags =
PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED |
PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY |
PCI_FLAGS_MWI_OKAY;
mba.mba_acpi.aa_ic = &x86_isa_chipset;
config_found_ia(self, "acpibus", &mba.mba_acpi, 0);
#if 0 /* XXXJRT not yet */
if (acpi_active) {
/*
* ACPI already did all the work for us, there
* is nothing more for us to do.
*/
return;
}
#endif
}
#endif
#if NPNPBIOS > 0
#if NACPI > 0
if (acpi_active == 0)
#endif
if (pnpbios_probe()) {
mba.mba_paa.paa_ic = &x86_isa_chipset;
config_found_ia(self, "pnpbiosbus", &mba.mba_paa, 0);
}
#endif
#if NIPMI > 0
memset(&mba.mba_ipmi, 0, sizeof(mba.mba_ipmi));
mba.mba_ipmi.iaa_iot = X86_BUS_SPACE_IO;
mba.mba_ipmi.iaa_memt = X86_BUS_SPACE_MEM;
if (ipmi_probe(&mba.mba_ipmi))
config_found_ia(self, "ipmibus", &mba.mba_ipmi, 0);
#endif
/*
* XXX Note also that the presence of a PCI bus should
* XXX _always_ be checked, and if present the bus should be
* XXX 'found'. However, because of the structure of the code,
* XXX that's not currently possible.
*/
#if NPCI > 0
if (pci_mode != 0) {
mba.mba_pba.pba_iot = X86_BUS_SPACE_IO;
mba.mba_pba.pba_memt = X86_BUS_SPACE_MEM;
mba.mba_pba.pba_dmat = &pci_bus_dma_tag;
mba.mba_pba.pba_dmat64 = NULL;
mba.mba_pba.pba_pc = NULL;
mba.mba_pba.pba_flags = pci_bus_flags();
mba.mba_pba.pba_bus = 0;
mba.mba_pba.pba_bridgetag = NULL;
#if NACPI > 0 && defined(ACPI_SCANPCI)
if (mpacpi_active)
mpacpi_scan_pci(self, &mba.mba_pba, pcibusprint);
else
#endif
#if defined(MPBIOS) && defined(MPBIOS_SCANPCI)
if (mpbios_scanned != 0)
mpbios_scan_pci(self, &mba.mba_pba, pcibusprint);
else
#endif
config_found_ia(self, "pcibus", &mba.mba_pba, pcibusprint);
#if NACPI > 0
if (mp_verbose)
acpi_pci_link_state();
#endif
}
#endif
#if NMCA > 0
/* Note: MCA bus probe is done in i386/machdep.c */
if (MCA_system) {
mba.mba_mba.mba_iot = X86_BUS_SPACE_IO;
mba.mba_mba.mba_memt = X86_BUS_SPACE_MEM;
mba.mba_mba.mba_dmat = &mca_bus_dma_tag;
mba.mba_mba.mba_mc = NULL;
mba.mba_mba.mba_bus = 0;
config_found_ia(self, "mcabus", &mba.mba_mba, mcabusprint);
}
#endif
if (memcmp(ISA_HOLE_VADDR(EISA_ID_PADDR), EISA_ID, EISA_ID_LEN) == 0 &&
eisa_has_been_seen == 0) {
mba.mba_eba.eba_iot = X86_BUS_SPACE_IO;
mba.mba_eba.eba_memt = X86_BUS_SPACE_MEM;
#if NEISA > 0
mba.mba_eba.eba_dmat = &eisa_bus_dma_tag;
#endif
config_found_ia(self, "eisabus", &mba.mba_eba, eisabusprint);
}
#if NISA > 0
if (isa_has_been_seen == 0)
config_found_ia(self, "isabus", &mba_iba, isabusprint);
#endif
#if NAPMBIOS > 0
#if NACPI > 0
if (acpi_active == 0)
#endif
if (apm_busprobe())
config_found_ia(self, "apmbus", 0, 0);
#endif
if (!pmf_device_register(self, NULL, NULL))
aprint_error_dev(self, "couldn't establish power handler\n");
}
int
mainbus_print(aux, pnp)
void *aux;
const char *pnp;
{
union mainbus_attach_args *mba = aux;
if (pnp)
aprint_normal("%s at %s", mba->mba_busname, pnp);
return (UNCONF);
}