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acpi: fix piix4 smbus mapping 

Make write to the smbus base register and enable bit actually work.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2012-11-23 14:58:04 +01:00
parent 798512e552
commit 24fe083de6
1 changed files with 19 additions and 1 deletions
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20
hw/acpi_piix4.c
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@ -142,12 +142,29 @@ static void pm_io_space_update(PIIX4PMState *s)
memory_region_transaction_commit();
}
static void smbus_io_space_update(PIIX4PMState *s)
{
s->smb_io_base = le32_to_cpu(*(uint32_t *)(s->dev.config + 0x90));
s->smb_io_base &= 0xffc0;
memory_region_transaction_begin();
memory_region_set_enabled(&s->smb.io, s->dev.config[0xd2] & 1);
memory_region_set_address(&s->smb.io, s->smb_io_base);
memory_region_transaction_commit();
}
static void pm_write_config(PCIDevice *d,
uint32_t address, uint32_t val, int len)
{
pci_default_write_config(d, address, val, len);
if (range_covers_byte(address, len, 0x80))
if (range_covers_byte(address, len, 0x80) ||
ranges_overlap(address, len, 0x40, 4)) {
pm_io_space_update((PIIX4PMState *)d);
}
if (range_covers_byte(address, len, 0xd2) ||
ranges_overlap(address, len, 0x90, 4)) {
smbus_io_space_update((PIIX4PMState *)d);
}
}
static void vmstate_pci_status_pre_save(void *opaque)
@ -392,6 +409,7 @@ static int piix4_pm_initfn(PCIDevice *dev)
pci_conf[0x91] = s->smb_io_base >> 8;
pci_conf[0xd2] = 0x09;
pm_smbus_init(&s->dev.qdev, &s->smb);
memory_region_set_enabled(&s->smb.io, pci_conf[0xd2] & 1);
memory_region_add_subregion(get_system_io(), s->smb_io_base, &s->smb.io);
memory_region_init(&s->io, "piix4-pm", 64);