diff options
| -rw-r--r-- | hw/acpi_piix4.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/hw/acpi_piix4.c b/hw/acpi_piix4.c index 9e6c97e..b1d5bf3 100644 --- a/hw/acpi_piix4.c +++ b/hw/acpi_piix4.c @@ -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); |