Signed-off-by: Gerd Hoffmann <kra...@redhat.com>
---
hw/acpi_piix4.c | 23 ++++++++++++++++++++++-
1 files changed, 22 insertions(+), 1 deletions(-)
diff --git a/hw/acpi_piix4.c b/hw/acpi_piix4.c
index cd876c8..a85c2d4 100644
--- a/hw/acpi_piix4.c
+++ b/hw/acpi_piix4.c
@@ -146,12 +146,33 @@ static void pm_io_space_update(PIIX4PMState *s)
}
}
+static void smbus_io_space_update(PIIX4PMState *s)
+{
+ if (s->smb.io.parent) {
+ memory_region_del_subregion(get_system_io(), &s->smb.io);
+ }
+ if (s->dev.config[0xd2] & 1) {
+ s->smb_io_base = le32_to_cpu(*(uint32_t *)(s->dev.config + 0x90));
+
+ /* XXX: need to improve memory and ioport allocation */
+ PIIX4_DPRINTF("smbus: mapping to 0x%x\n", s->smb_io_base);
+ memory_region_add_subregion(get_system_io(), s->smb_io_base,
+ &s->smb.io);
+ }
+}
+
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)
--
1.7.1
