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malta: Fix regression (i8259 interrupts did not work)

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Commit 5632ae46d5 passes the address
of i8259 to qemu_irq_proxy. i8259 is an auto variable with undefined
value outside of mips_malta_init.

This made the interrupt proxy unusable: either QEMU crashes, or
the interrupt handler was not called.

Ethernet for example no longer worked with MIPS Malta.

v2:
While v1 used a static variable for i8259, this patch introduces
a qdev for the malta machine. i8259 is now part of the device status.
This is a minimal qdev implementation to keep the patch small.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Stefan Weil 2011-11-29 06:34:48 +01:00 committed by Aurelien Jarno
parent a2e4d53ec5
commit e9b40fd34c
1 changed files with 35 additions and 4 deletions
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39
hw/mips_malta.c
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@ -47,6 +47,7 @@
#include "mc146818rtc.h"
#include "blockdev.h"
#include "exec-memory.h"
#include "sysbus.h" /* SysBusDevice */
//#define DEBUG_BOARD_INIT
@ -72,6 +73,11 @@ typedef struct {
SerialState *uart;
} MaltaFPGAState;
typedef struct {
SysBusDevice busdev;
qemu_irq *i8259;
} MaltaState;
static ISADevice *pit;
static struct _loaderparams {
@ -776,7 +782,7 @@ void mips_malta_init (ram_addr_t ram_size,
PCIBus *pci_bus;
ISABus *isa_bus;
CPUState *env;
qemu_irq *i8259 = NULL, *isa_irq;
qemu_irq *isa_irq;
qemu_irq *cpu_exit_irq;
int piix4_devfn;
i2c_bus *smbus;
@ -788,6 +794,11 @@ void mips_malta_init (ram_addr_t ram_size,
int fl_sectors = 0;
int be;
DeviceState *dev = qdev_create(NULL, "mips-malta");
MaltaState *s = DO_UPCAST(MaltaState, busdev.qdev, dev);
qdev_init_nofail(dev);
/* Make sure the first 3 serial ports are associated with a device. */
for(i = 0; i < 3; i++) {
if (!serial_hds[i]) {
@ -937,7 +948,7 @@ void mips_malta_init (ram_addr_t ram_size,
* 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(&i8259, 16);
isa_irq = qemu_irq_proxy(&s->i8259, 16);
/* Northbridge */
pci_bus = gt64120_register(isa_irq);
@ -949,9 +960,9 @@ void mips_malta_init (ram_addr_t ram_size,
/* Interrupt controller */
/* The 8259 is attached to the MIPS CPU INT0 pin, ie interrupt 2 */
i8259 = i8259_init(isa_bus, env->irq[2]);
s->i8259 = i8259_init(isa_bus, env->irq[2]);
isa_bus_irqs(isa_bus, i8259);
isa_bus_irqs(isa_bus, s->i8259);
pci_piix4_ide_init(pci_bus, hd, piix4_devfn + 1);
usb_uhci_piix4_init(pci_bus, piix4_devfn + 2);
smbus = piix4_pm_init(pci_bus, piix4_devfn + 3, 0x1100,
@ -995,6 +1006,20 @@ void mips_malta_init (ram_addr_t ram_size,
}
}
static int mips_malta_sysbus_device_init(SysBusDevice *sysbusdev)
{
return 0;
}
static SysBusDeviceInfo mips_malta_device = {
.init = mips_malta_sysbus_device_init,
.qdev.name = "mips-malta",
.qdev.size = sizeof(MaltaState),
.qdev.props = (Property[]) {
DEFINE_PROP_END_OF_LIST(),
}
};
static QEMUMachine mips_malta_machine = {
.name = "malta",
.desc = "MIPS Malta Core LV",
@ -1003,9 +1028,15 @@ static QEMUMachine mips_malta_machine = {
.is_default = 1,
};
static void mips_malta_device_init(void)
{
sysbus_register_withprop(&mips_malta_device);
}
static void mips_malta_machine_init(void)
{
qemu_register_machine(&mips_malta_machine);
}
device_init(mips_malta_device_init);
machine_init(mips_malta_machine_init);