@@ -34,6 +34,8 @@ PCIDevice *piix4_dev;
typedef struct PIIX4State {
PCIDevice dev;
+ qemu_irq cpu_intr;
+ qemu_irq *isa;
/* Reset Control Register */
MemoryRegion rcr_mem;
@@ -92,6 +94,18 @@ static const VMStateDescription vmstate_piix4 = {
}
};
+static void piix4_request_i8259_irq(void *opaque, int irq, int level)
+{
+ PIIX4State *s = opaque;
+ qemu_set_irq(s->cpu_intr, level);
+}
+
+static void piix4_set_i8259_irq(void *opaque, int irq, int level)
+{
+ PIIX4State *s = opaque;
+ qemu_set_irq(s->isa[irq], level);
+}
+
static void piix4_rcr_write(void *opaque, hwaddr addr, uint64_t val,
unsigned int len)
{
@@ -124,28 +138,32 @@ static void piix4_realize(PCIDevice *pci_dev, Error **errp)
{
DeviceState *dev = DEVICE(pci_dev);
PIIX4State *s = DO_UPCAST(PIIX4State, dev, pci_dev);
+ ISABus *isa_bus;
+ qemu_irq *i8259_out_irq;
- if (!isa_bus_new(dev, pci_address_space(pci_dev),
- pci_address_space_io(pci_dev), errp)) {
+ isa_bus = isa_bus_new(dev, pci_address_space(pci_dev),
+ pci_address_space_io(pci_dev), errp);
+ if (!isa_bus) {
return;
}
+ qdev_init_gpio_in_named(dev, piix4_set_i8259_irq, "isa", ISA_NUM_IRQS);
+ qdev_init_gpio_out_named(dev, &s->cpu_intr, "intr", 1);
+
memory_region_init_io(&s->rcr_mem, OBJECT(dev), &piix4_rcr_ops, s,
"reset-control", 1);
memory_region_add_subregion_overlap(pci_address_space_io(pci_dev), 0xcf9,
&s->rcr_mem, 1);
- piix4_dev = pci_dev;
- qemu_register_reset(piix4_reset, s);
-}
+ /* initialize i8259 pic */
+ i8259_out_irq = qemu_allocate_irqs(piix4_request_i8259_irq, s, 1);
+ s->isa = i8259_init(isa_bus, *i8259_out_irq);
-int piix4_init(PCIBus *bus, ISABus **isa_bus, int devfn)
-{
- PCIDevice *d;
+ /* initialize ISA irqs */
+ isa_bus_irqs(isa_bus, s->isa);
- d = pci_create_simple_multifunction(bus, devfn, true, "PIIX4");
- *isa_bus = ISA_BUS(qdev_get_child_bus(DEVICE(d), "isa.0"));
- return d->devfn;
+ piix4_dev = pci_dev;
+ qemu_register_reset(piix4_reset, s);
}
static void piix4_class_init(ObjectClass *klass, void *data)
@@ -96,7 +96,7 @@ typedef struct {
SysBusDevice parent_obj;
MIPSCPSState *cps;
- qemu_irq *i8259;
+ qemu_irq i8259[16];
} MaltaState;
static ISADevice *pit;
@@ -998,8 +998,8 @@ void mips_malta_init(MachineState *machine)
int64_t kernel_entry, bootloader_run_addr;
PCIBus *pci_bus;
ISABus *isa_bus;
- qemu_irq *isa_irq;
qemu_irq cbus_irq, i8259_irq;
+ PCIDevice *pci;
int piix4_devfn;
I2CBus *smbus;
int i;
@@ -1180,28 +1180,24 @@ void mips_malta_init(MachineState *machine)
/* Board ID = 0x420 (Malta Board with CoreLV) */
stl_p(memory_region_get_ram_ptr(bios_copy) + 0x10, 0x00000420);
- /*
- * We have a circular dependency problem: pci_bus depends on isa_irq,
- * isa_irq is provided by i8259, i8259 depends on ISA, ISA depends
- * on piix4, and piix4 depends on pci_bus. To stop the cycle we have
- * qemu_irq_proxy() adds an extra bit of indirection, allowing us
- * to resolve the isa_irq -> i8259 dependency after i8259 is initialized.
- */
- isa_irq = qemu_irq_proxy(&s->i8259, 16);
-
/* Northbridge */
- pci_bus = gt64120_register(isa_irq);
+ pci_bus = gt64120_register(s->i8259);
/* Southbridge */
ide_drive_get(hd, ARRAY_SIZE(hd));
- piix4_devfn = piix4_init(pci_bus, &isa_bus, 80);
+ pci = pci_create_simple_multifunction(pci_bus, PCI_DEVFN(10, 0),
+ true, "PIIX4");
+ dev = DEVICE(pci);
+ isa_bus = ISA_BUS(qdev_get_child_bus(dev, "isa.0"));
+ piix4_devfn = pci->devfn;
/* Interrupt controller */
- /* The 8259 is attached to the MIPS CPU INT0 pin, ie interrupt 2 */
- s->i8259 = i8259_init(isa_bus, i8259_irq);
+ qdev_connect_gpio_out_named(dev, "intr", 0, i8259_irq);
+ for (i = 0; i < 16; i++) {
+ s->i8259[i] = qdev_get_gpio_in_named(dev, "isa", i);
+ }
- isa_bus_irqs(isa_bus, s->i8259);
pci_piix4_ide_init(pci_bus, hd, piix4_devfn + 1);
pci_create_simple(pci_bus, piix4_devfn + 2, "piix4-usb-uhci");
smbus = piix4_pm_init(pci_bus, piix4_devfn + 3, 0x1100,
@@ -300,7 +300,6 @@ PCIBus *i440fx_init(const char *host_type, const char *pci_type,
PCIBus *find_i440fx(void);
/* piix4.c */
extern PCIDevice *piix4_dev;
-int piix4_init(PCIBus *bus, ISABus **isa_bus, int devfn);
/* pc_sysfw.c */
void pc_system_firmware_init(MemoryRegion *rom_memory,