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| author | Marcel Apfelbaum <marcel@redhat.com> | 2015-06-02 14:23:01 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2015-06-03 18:19:17 +0200 |
| commit | a4894206e3672f8a5e5443d72b705495e022b638 (patch) | |
| tree | 4c9393d8ac746bdff361bebb03d7cc6b5e6cca6d /hw/i386 | |
| parent | 09e5b81922179b6c52b42fd27587e64b474036c7 (diff) | |
| download | qemu-a4894206e3672f8a5e5443d72b705495e022b638.zip qemu-a4894206e3672f8a5e5443d72b705495e022b638.tar.gz qemu-a4894206e3672f8a5e5443d72b705495e022b638.tar.bz2 | |
hw/acpi: add support for i440fx 'snooping' root busses
If the machine has extra root busses that are snooping to
the i440fx host bridge, we need to add them to
acpi in order to be properly detected by guests.
Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Diffstat (limited to 'hw/i386')
| -rw-r--r-- | hw/i386/acpi-build.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index 50b93bd..a7e248d 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -626,6 +626,7 @@ build_ssdt(GArray *table_data, GArray *linker, uint32_t nr_mem = machine->ram_slots; unsigned acpi_cpus = guest_info->apic_id_limit; Aml *ssdt, *sb_scope, *scope, *pkg, *dev, *method, *crs, *field, *ifctx; + PCIBus *bus = NULL; int i; ssdt = init_aml_allocator(); @@ -637,6 +638,28 @@ build_ssdt(GArray *table_data, GArray *linker, /* Reserve space for header */ acpi_data_push(ssdt->buf, sizeof(AcpiTableHeader)); + /* Extra PCI root buses are implemented only for i440fx */ + bus = find_i440fx(); + if (bus) { + QLIST_FOREACH(bus, &bus->child, sibling) { + uint8_t bus_num = pci_bus_num(bus); + + /* look only for expander root buses */ + if (!pci_bus_is_root(bus)) { + continue; + } + + scope = aml_scope("\\_SB"); + dev = aml_device("PC%.02X", bus_num); + aml_append(dev, + aml_name_decl("_UID", aml_string("PC%.02X", bus_num))); + aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A03"))); + aml_append(dev, aml_name_decl("_BBN", aml_int(bus_num))); + aml_append(scope, dev); + aml_append(ssdt, scope); + } + } + scope = aml_scope("\\_SB.PCI0"); /* build PCI0._CRS */ crs = aml_resource_template(); |