[RFC PATCH 02/11] hw/ide: Add PCIIDEState::isa_bus link

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

IDE bus depends on ISA bus for IRQ/DMA.

Add an ISABus reference in PCIIDEState, and add link properties
to it in the PIIX and VIA objects (which inherit PCI_IDE).

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 include/hw/ide/pci.h |  1 +
 hw/ide/piix.c        | 11 ++++++++++-
 hw/ide/via.c         | 10 +++++++++-
 3 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/include/hw/ide/pci.h b/include/hw/ide/pci.h
index d8384e1c422..e790722ed14 100644
--- a/include/hw/ide/pci.h
+++ b/include/hw/ide/pci.h
@@ -47,6 +47,7 @@ struct PCIIDEState {
     PCIDevice parent_obj;
     /*< public >*/
 
+    ISABus *isa_bus;
     IDEBus bus[2];
     BMDMAState bmdma[2];
     uint32_t secondary; /* used only for cmd646 */
diff --git a/hw/ide/piix.c b/hw/ide/piix.c
index b9860e35a5c..48da68da37f 100644
--- a/hw/ide/piix.c
+++ b/hw/ide/piix.c
@@ -30,8 +30,9 @@
 #include "sysemu/block-backend.h"
 #include "sysemu/blockdev.h"
 #include "sysemu/dma.h"
-
+#include "qapi/error.h"
 #include "hw/ide/pci.h"
+#include "hw/isa/isa.h"
 #include "trace.h"
 
 static uint64_t bmdma_read(void *opaque, hwaddr addr, unsigned size)
@@ -207,6 +208,12 @@ static void pci_piix_ide_exitfn(PCIDevice *dev)
     }
 }
 
+static Property piix_ide_properties[] = {
+    DEFINE_PROP_LINK("isa-bus", PCIIDEState, isa_bus,
+                     TYPE_ISA_BUS, ISABus *),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
 /* NOTE: for the PIIX3, the IRQs and IOports are hardcoded */
 static void piix3_ide_class_init(ObjectClass *klass, void *data)
 {
@@ -221,6 +228,7 @@ static void piix3_ide_class_init(ObjectClass *klass, void *data)
     k->class_id = PCI_CLASS_STORAGE_IDE;
     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
     dc->hotpluggable = false;
+    device_class_set_props(dc, piix_ide_properties);
 }
 
 static const TypeInfo piix3_ide_info = {
@@ -249,6 +257,7 @@ static void piix4_ide_class_init(ObjectClass *klass, void *data)
     k->class_id = PCI_CLASS_STORAGE_IDE;
     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
     dc->hotpluggable = false;
+    device_class_set_props(dc, piix_ide_properties);
 }
 
 static const TypeInfo piix4_ide_info = {
diff --git a/hw/ide/via.c b/hw/ide/via.c
index be09912b334..65fdca6dcf4 100644
--- a/hw/ide/via.c
+++ b/hw/ide/via.c
@@ -28,8 +28,9 @@
 #include "hw/pci/pci.h"
 #include "migration/vmstate.h"
 #include "qemu/module.h"
+#include "qapi/error.h"
 #include "sysemu/dma.h"
-
+#include "hw/isa/isa.h"
 #include "hw/ide/pci.h"
 #include "trace.h"
 
@@ -210,6 +211,12 @@ static void via_ide_exitfn(PCIDevice *dev)
     }
 }
 
+static Property via_ide_properties[] = {
+    DEFINE_PROP_LINK("isa-bus", PCIIDEState, isa_bus,
+                     TYPE_ISA_BUS, ISABus *),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
 static void via_ide_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
@@ -224,6 +231,7 @@ static void via_ide_class_init(ObjectClass *klass, void *data)
     k->revision = 0x06;
     k->class_id = PCI_CLASS_STORAGE_IDE;
     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
+    device_class_set_props(dc, via_ide_properties);
 }
 
 static const TypeInfo via_ide_info = {
-- 
2.26.3