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hw/isa/piix3: QOM'ify PCI device creation and wiring 

PCI interrupt wiring was performed in create() functions which are
obsolete. Move these tasks into QOM functions to modernize the code.

In order to avoid duplicate checking for xen_enabled() the realize
methods are now split.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20220603185045.143789-10-shentey@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
This commit is contained in:
Bernhard Beschow 2022-06-03 20:50:43 +02:00 committed by Philippe Mathieu-Daudé
parent 5bf26b9393
commit fe3055d292
1 changed files with 45 additions and 22 deletions
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67
hw/isa/piix3.c
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@ -24,6 +24,7 @@
#include "qemu/osdep.h"
#include "qemu/range.h"
#include "qapi/error.h"
#include "hw/southbridge/piix.h"
#include "hw/irq.h"
#include "hw/isa/isa.h"
@ -278,7 +279,7 @@ static const MemoryRegionOps rcr_ops = {
.endianness = DEVICE_LITTLE_ENDIAN
};
static void piix3_realize(PCIDevice *dev, Error **errp)
static void pci_piix3_realize(PCIDevice *dev, Error **errp)
{
PIIX3State *d = PIIX3_PCI_DEVICE(dev);
@ -317,7 +318,6 @@ static void pci_piix3_class_init(ObjectClass *klass, void *data)
dc->desc = "ISA bridge";
dc->vmsd = &vmstate_piix3;
dc->hotpluggable = false;
k->realize = piix3_realize;
k->vendor_id = PCI_VENDOR_ID_INTEL;
/* 82371SB PIIX3 PCI-to-ISA bridge (Step A1) */
k->device_id = PCI_DEVICE_ID_INTEL_82371SB_0;
@ -343,11 +343,28 @@ static const TypeInfo piix3_pci_type_info = {
},
};
static void piix3_realize(PCIDevice *dev, Error **errp)
{
ERRP_GUARD();
PIIX3State *piix3 = PIIX3_PCI_DEVICE(dev);
PCIBus *pci_bus = pci_get_bus(dev);
pci_piix3_realize(dev, errp);
if (*errp) {
return;
}
pci_bus_irqs(pci_bus, piix3_set_irq, pci_slot_get_pirq,
piix3, PIIX_NUM_PIRQS);
pci_bus_set_route_irq_fn(pci_bus, piix3_route_intx_pin_to_irq);
};
static void piix3_class_init(ObjectClass *klass, void *data)
{
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
k->config_write = piix3_write_config;
k->realize = piix3_realize;
}
static const TypeInfo piix3_info = {
@ -356,11 +373,33 @@ static const TypeInfo piix3_info = {
.class_init = piix3_class_init,
};
static void piix3_xen_realize(PCIDevice *dev, Error **errp)
{
ERRP_GUARD();
PIIX3State *piix3 = PIIX3_PCI_DEVICE(dev);
PCIBus *pci_bus = pci_get_bus(dev);
pci_piix3_realize(dev, errp);
if (*errp) {
return;
}
/*
* Xen supports additional interrupt routes from the PCI devices to
* the IOAPIC: the four pins of each PCI device on the bus are also
* connected to the IOAPIC directly.
* These additional routes can be discovered through ACPI.
*/
pci_bus_irqs(pci_bus, xen_piix3_set_irq, xen_pci_slot_get_pirq,
piix3, XEN_PIIX_NUM_PIRQS);
};
static void piix3_xen_class_init(ObjectClass *klass, void *data)
{
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
k->config_write = piix3_write_config_xen;
k->realize = piix3_xen_realize;
};
static const TypeInfo piix3_xen_info = {
@ -382,27 +421,11 @@ PIIX3State *piix3_create(PCIBus *pci_bus, ISABus **isa_bus)
{
PIIX3State *piix3;
PCIDevice *pci_dev;
const char *type = xen_enabled() ? TYPE_PIIX3_XEN_DEVICE
: TYPE_PIIX3_DEVICE;
/*
* Xen supports additional interrupt routes from the PCI devices to
* the IOAPIC: the four pins of each PCI device on the bus are also
* connected to the IOAPIC directly.
* These additional routes can be discovered through ACPI.
*/
if (xen_enabled()) {
pci_dev = pci_create_simple_multifunction(pci_bus, -1, true,
TYPE_PIIX3_XEN_DEVICE);
piix3 = PIIX3_PCI_DEVICE(pci_dev);
pci_bus_irqs(pci_bus, xen_piix3_set_irq, xen_pci_slot_get_pirq,
piix3, XEN_PIIX_NUM_PIRQS);
} else {
pci_dev = pci_create_simple_multifunction(pci_bus, -1, true,
TYPE_PIIX3_DEVICE);
piix3 = PIIX3_PCI_DEVICE(pci_dev);
pci_bus_irqs(pci_bus, piix3_set_irq, pci_slot_get_pirq,
piix3, PIIX_NUM_PIRQS);
pci_bus_set_route_irq_fn(pci_bus, piix3_route_intx_pin_to_irq);
}
pci_dev = pci_create_simple_multifunction(pci_bus, -1, true, type);
piix3 = PIIX3_PCI_DEVICE(pci_dev);
*isa_bus = ISA_BUS(qdev_get_child_bus(DEVICE(piix3), "isa.0"));
return piix3;