diff options
| author | Corey Minyard <cminyard@mvista.com> | 2016-05-12 20:43:45 -0500 |
|---|---|---|
| committer | Corey Minyard <cminyard@mvista.com> | 2019-09-20 14:09:24 -0500 |
| commit | ebe15582cafeb944a1c6e99aa526e81a1551c567 (patch) | |
| tree | 2fc798ef145dbee9c22b2aa1e2ebabbc3558c7c5 /hw/i386/acpi-build.c | |
| parent | 576d05b67fa0566cfb92da93c810a55a035548d0 (diff) | |
pc: Add an SMB0 ACPI device to q35
This is so I2C devices can be found in the ACPI namespace. Currently
that's only IPMI, but devices can be easily added now.
Adding the devices required some PCI information, and the bus itself
to be added to the PCMachineState structure.
Note that this only works on Q35, the ACPI for PIIX4 is not capable
of handling an SMBus device.
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/i386/acpi-build.c')
| -rw-r--r-- | hw/i386/acpi-build.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index 8acf12df9a..4e0f9f425a 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -1809,6 +1809,18 @@ static Aml *build_q35_osc_method(void) return method; } +static void build_smb0(Aml *table, I2CBus *smbus, int devnr, int func) +{ + Aml *scope = aml_scope("_SB.PCI0"); + Aml *dev = aml_device("SMB0"); + + aml_append(dev, aml_name_decl("_HID", aml_eisaid("APP0005"))); + aml_append(dev, aml_name_decl("_ADR", aml_int(devnr << 16 | func))); + build_acpi_ipmi_devices(dev, BUS(smbus), "\\_SB.PCI0.SMB0"); + aml_append(scope, dev); + aml_append(table, scope); +} + static void build_dsdt(GArray *table_data, BIOSLinker *linker, AcpiPmInfo *pm, AcpiMiscInfo *misc, @@ -1862,6 +1874,9 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, build_q35_isa_bridge(dsdt); build_isa_devices_aml(dsdt); build_q35_pci0_int(dsdt); + if (pcms->smbus && !pcmc->do_not_add_smb_acpi) { + build_smb0(dsdt, pcms->smbus, ICH9_SMB_DEV, ICH9_SMB_FUNC); + } } if (pcmc->legacy_cpu_hotplug) { |