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Add a simple device driver to "eat" any I/O APICs that show up as PCI

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devices.

MFC after:	1 week
This commit is contained in:
John Baldwin 2007-03-05 16:22:49 +00:00
parent d8a4c26cde
commit db181dc741
2 changed files with 96 additions and 2 deletions
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49
sys/amd64/amd64/io_apic.c
View File

@ -36,11 +36,15 @@ __FBSDID("$FreeBSD$");
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/sysctl.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <vm/vm.h>
#include <vm/pmap.h>
@ -727,3 +731,46 @@ ioapic_register(void *cookie)
if (pin->io_irq < NUM_IO_INTS)
intr_register_source(&pin->io_intsrc);
}
/* A simple new-bus driver to consume PCI I/O APIC devices. */
static int
ioapic_pci_probe(device_t dev)
{
if (pci_get_class(dev) == PCIC_BASEPERIPH &&
pci_get_subclass(dev) == PCIS_BASEPERIPH_PIC) {
switch (pci_get_progif(dev)) {
case PCIP_BASEPERIPH_PIC_IO_APIC:
device_set_desc(dev, "IO APIC");
break;
case PCIP_BASEPERIPH_PIC_IOX_APIC:
device_set_desc(dev, "IO(x) APIC");
break;
default:
return (ENXIO);
}
device_quiet(dev);
return (-10000);
}
return (ENXIO);
}
static int
ioapic_pci_attach(device_t dev)
{
return (0);
}
static device_method_t ioapic_pci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, ioapic_pci_probe),
DEVMETHOD(device_attach, ioapic_pci_attach),
{ 0, 0 }
};
DEFINE_CLASS_0(ioapic, ioapic_pci_driver, ioapic_pci_methods, 0);
static devclass_t ioapic_devclass;
DRIVER_MODULE(ioapic, pci, ioapic_pci_driver, ioapic_devclass, 0, 0);

49
sys/i386/i386/io_apic.c
View File

@ -36,11 +36,15 @@ __FBSDID("$FreeBSD$");
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/sysctl.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <vm/vm.h>
#include <vm/pmap.h>
@ -727,3 +731,46 @@ ioapic_register(void *cookie)
if (pin->io_irq < NUM_IO_INTS)
intr_register_source(&pin->io_intsrc);
}
/* A simple new-bus driver to consume PCI I/O APIC devices. */
static int
ioapic_pci_probe(device_t dev)
{
if (pci_get_class(dev) == PCIC_BASEPERIPH &&
pci_get_subclass(dev) == PCIS_BASEPERIPH_PIC) {
switch (pci_get_progif(dev)) {
case PCIP_BASEPERIPH_PIC_IO_APIC:
device_set_desc(dev, "IO APIC");
break;
case PCIP_BASEPERIPH_PIC_IOX_APIC:
device_set_desc(dev, "IO(x) APIC");
break;
default:
return (ENXIO);
}
device_quiet(dev);
return (-10000);
}
return (ENXIO);
}
static int
ioapic_pci_attach(device_t dev)
{
return (0);
}
static device_method_t ioapic_pci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, ioapic_pci_probe),
DEVMETHOD(device_attach, ioapic_pci_attach),
{ 0, 0 }
};
DEFINE_CLASS_0(ioapic, ioapic_pci_driver, ioapic_pci_methods, 0);
static devclass_t ioapic_devclass;
DRIVER_MODULE(ioapic, pci, ioapic_pci_driver, ioapic_devclass, 0, 0);