[Qemu-devel] [PATCH 3/4] hw/pc: query both q35 and i440fx bus

[Marcel Apfelbaum]

Look for pxb devices on both i386 machines.

Signed-off-by: Marcel Apfelbaum <mar...@redhat.com>
---
 hw/i386/acpi-build.c | 3 +--
 hw/i386/pc.c         | 2 +-
 hw/pci-host/q35.c    | 8 ++++++++
 include/hw/i386/pc.h | 9 +++++++++
 4 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 736b252..80e9d47 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -950,8 +950,7 @@ 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();
+    bus = find_pc();
     if (bus) {
         QLIST_FOREACH(bus, &bus->child, sibling) {
             uint8_t bus_num = pci_bus_num(bus);
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 0cb8afd..c027782 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1174,7 +1174,7 @@ void pc_guest_info_machine_done(Notifier *notifier, void 
*data)
     PcGuestInfoState *guest_info_state = container_of(notifier,
                                                       PcGuestInfoState,
                                                       machine_done);
-    PCIBus *bus = find_i440fx();
+    PCIBus *bus = find_pc();
 
     if (bus) {
         int extra_hosts = 0;
diff --git a/hw/pci-host/q35.c b/hw/pci-host/q35.c
index c81507d..2fbbcd3 100644
--- a/hw/pci-host/q35.c
+++ b/hw/pci-host/q35.c
@@ -511,6 +511,14 @@ static void mch_realize(PCIDevice *d, Error **errp)
     }
 }
 
+PCIBus *find_q35(void)
+{
+    PCIHostState *s = OBJECT_CHECK(PCIHostState,
+                                   object_resolve_path("/machine/q35", NULL),
+                                   TYPE_PCI_HOST_BRIDGE);
+    return s ? s->bus : NULL;
+}
+
 uint64_t mch_mcfg_base(void)
 {
     bool ambiguous;
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 4bbc0ff..95d7610 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -242,6 +242,15 @@ PCIBus *i440fx_init(const char *host_type, const char 
*pci_type,
                     MemoryRegion *ram_memory);
 
 PCIBus *find_i440fx(void);
+PCIBus *find_q35(void);
+
+static inline PCIBus *find_pc(void)
+{
+    PCIBus *bus = find_i440fx();
+
+    return bus ? bus : find_q35();
+}
+
 /* piix4.c */
 extern PCIDevice *piix4_dev;
 int piix4_init(PCIBus *bus, ISABus **isa_bus, int devfn);
-- 
2.1.0