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Fix pci hotplug to generate level triggered interrupt. 

SCI is level triggered. pci hotplug should behave appropriately.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Gleb Natapov 2010-10-17 11:45:25 +02:00 committed by Anthony Liguori
parent 4441a2870a
commit 633aa0acfe
1 changed files with 17 additions and 11 deletions
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28
hw/acpi_piix4.c
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@ -107,7 +107,9 @@ static void pm_update_sci(PIIX4PMState *s)
(ACPI_BITMASK_RT_CLOCK_ENABLE |
ACPI_BITMASK_POWER_BUTTON_ENABLE |
ACPI_BITMASK_GLOBAL_LOCK_ENABLE |
ACPI_BITMASK_TIMER_ENABLE)) != 0);
ACPI_BITMASK_TIMER_ENABLE)) != 0) ||
(((s->gpe.sts & s->gpe.en) & PIIX4_PCI_HOTPLUG_STATUS) != 0);
qemu_set_irq(s->irq, sci_level);
/* schedule a timer interruption if needed */
if ((s->pmen & ACPI_BITMASK_TIMER_ENABLE) &&
@ -462,7 +464,9 @@ static uint32_t gpe_read_val(uint16_t val, uint32_t addr)
static uint32_t gpe_readb(void *opaque, uint32_t addr)
{
uint32_t val = 0;
struct gpe_regs *g = opaque;
PIIX4PMState *s = opaque;
struct gpe_regs *g = &s->gpe;
switch (addr) {
case GPE_BASE:
case GPE_BASE + 1:
@ -502,7 +506,9 @@ static void gpe_reset_val(uint16_t *cur, int addr, uint32_t val)
static void gpe_writeb(void *opaque, uint32_t addr, uint32_t val)
{
struct gpe_regs *g = opaque;
PIIX4PMState *s = opaque;
struct gpe_regs *g = &s->gpe;
switch (addr) {
case GPE_BASE:
case GPE_BASE + 1:
@ -514,7 +520,9 @@ static void gpe_writeb(void *opaque, uint32_t addr, uint32_t val)
break;
default:
break;
}
}
pm_update_sci(s);
PIIX4_DPRINTF("gpe write %x <== %d\n", addr, val);
}
@ -581,11 +589,10 @@ static int piix4_device_hotplug(DeviceState *qdev, PCIDevice *dev, int state);
static void piix4_acpi_system_hot_add_init(PCIBus *bus, PIIX4PMState *s)
{
struct gpe_regs *gpe = &s->gpe;
struct pci_status *pci0_status = &s->pci0_status;
register_ioport_write(GPE_BASE, 4, 1, gpe_writeb, gpe);
register_ioport_read(GPE_BASE, 4, 1, gpe_readb, gpe);
register_ioport_write(GPE_BASE, 4, 1, gpe_writeb, s);
register_ioport_read(GPE_BASE, 4, 1, gpe_readb, s);
register_ioport_write(PCI_BASE, 8, 4, pcihotplug_write, pci0_status);
register_ioport_read(PCI_BASE, 8, 4, pcihotplug_read, pci0_status);
@ -621,9 +628,8 @@ static int piix4_device_hotplug(DeviceState *qdev, PCIDevice *dev, int state)
} else {
disable_device(s, slot);
}
if (s->gpe.en & 2) {
qemu_set_irq(s->irq, 1);
qemu_set_irq(s->irq, 0);
}
pm_update_sci(s);
return 0;
}