[PATCH v6 17/33] hw/isa/piix3: Create IDE controller in host device

[Bernhard Beschow]

Now that PIIX3 contains the new TYPE_ISA_PIC, it is possible to
instantiate PIIX3 IDE in the PIIX3 southbridge. PIIX3 IDE wires up its
interrupts to the ISA bus in its realize method which requires the
interrupt controller to provide fully populated qemu_irqs. This is the
case for TYPE_ISA_PIC even though the virtualization technology isn't
known yet.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20221022150508.26830-17-shentey@gmail.com>
---
 include/hw/southbridge/piix.h |  2 ++
 hw/i386/pc_piix.c             | 15 ++++++---------
 hw/isa/piix3.c                |  8 ++++++++
 hw/i386/Kconfig               |  1 -
 hw/isa/Kconfig                |  1 +
 5 files changed, 17 insertions(+), 10 deletions(-)

diff --git a/include/hw/southbridge/piix.h b/include/hw/southbridge/piix.h
index 514ccdb7fd..e3c35ca16f 100644
--- a/include/hw/southbridge/piix.h
+++ b/include/hw/southbridge/piix.h
@@ -15,6 +15,7 @@
 #include "hw/pci/pci_device.h"
 #include "qom/object.h"
 #include "hw/acpi/piix4.h"
+#include "hw/ide/pci.h"
 #include "hw/intc/i8259.h"
 #include "hw/rtc/mc146818rtc.h"
 #include "hw/usb/hcd-uhci.h"
@@ -56,6 +57,7 @@ struct PIIXState {
 
     ISAPICState pic;
     RTCState rtc;
+    PCIIDEState ide;
     UHCIState uhci;
     PIIX4PMState pm;
 
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index df8e2e389b..4675981021 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -41,7 +41,6 @@
 #include "hw/usb.h"
 #include "net/net.h"
 #include "hw/ide/pci.h"
-#include "hw/ide/piix.h"
 #include "hw/irq.h"
 #include "sysemu/kvm.h"
 #include "hw/kvm/clock.h"
@@ -98,7 +97,6 @@ static void pc_init1(MachineState *machine,
     PCIBus *pci_bus;
     ISABus *isa_bus;
     Object *piix4_pm;
-    int piix3_devfn = -1;
     qemu_irq smi_irq;
     GSIState *gsi_state;
     BusState *idebus[MAX_IDE_BUS];
@@ -252,11 +250,14 @@ static void pc_init1(MachineState *machine,
         for (i = 0; i < ISA_NUM_IRQS; i++) {
             qdev_connect_gpio_out(dev, i, x86ms->gsi[i]);
         }
-        piix3_devfn = pci_dev->devfn;
         isa_bus = ISA_BUS(qdev_get_child_bus(DEVICE(pci_dev), "isa.0"));
         rtc_state = ISA_DEVICE(object_resolve_path_component(OBJECT(pci_dev),
                                                              "rtc"));
         piix4_pm = object_resolve_path_component(OBJECT(pci_dev), "pm");
+        dev = DEVICE(object_resolve_path_component(OBJECT(pci_dev), "ide"));
+        pci_ide_create_devs(PCI_DEVICE(dev));
+        idebus[0] = qdev_get_child_bus(dev, "ide.0");
+        idebus[1] = qdev_get_child_bus(dev, "ide.1");
     } else {
         pci_bus = NULL;
         piix4_pm = NULL;
@@ -270,6 +271,8 @@ static void pc_init1(MachineState *machine,
 
         i8257_dma_init(isa_bus, 0);
         pcms->hpet_enabled = false;
+        idebus[0] = NULL;
+        idebus[1] = NULL;
     }
 
     if (x86ms->pic == ON_OFF_AUTO_ON || x86ms->pic == ON_OFF_AUTO_AUTO) {
@@ -298,12 +301,6 @@ static void pc_init1(MachineState *machine,
     pc_nic_init(pcmc, isa_bus, pci_bus);
 
     if (pcmc->pci_enabled) {
-        PCIDevice *dev;
-
-        dev = pci_create_simple(pci_bus, piix3_devfn + 1, TYPE_PIIX3_IDE);
-        pci_ide_create_devs(dev);
-        idebus[0] = qdev_get_child_bus(&dev->qdev, "ide.0");
-        idebus[1] = qdev_get_child_bus(&dev->qdev, "ide.1");
         pc_cmos_init(pcms, idebus[0], idebus[1], rtc_state);
     }
 #ifdef CONFIG_IDE_ISA
diff --git a/hw/isa/piix3.c b/hw/isa/piix3.c
index 88a6bf28ea..a549b1a8a5 100644
--- a/hw/isa/piix3.c
+++ b/hw/isa/piix3.c
@@ -29,6 +29,7 @@
 #include "hw/southbridge/piix.h"
 #include "hw/irq.h"
 #include "hw/qdev-properties.h"
+#include "hw/ide/piix.h"
 #include "hw/isa/isa.h"
 #include "hw/xen/xen.h"
 #include "sysemu/runstate.h"
@@ -317,6 +318,12 @@ static void pci_piix3_realize(PCIDevice *dev, Error **errp)
         return;
     }
 
+    /* IDE */
+    qdev_prop_set_int32(DEVICE(&d->ide), "addr", dev->devfn + 1);
+    if (!qdev_realize(DEVICE(&d->ide), BUS(pci_bus), errp)) {
+        return;
+    }
+
     /* USB */
     if (d->has_usb) {
         object_initialize_child(OBJECT(dev), "uhci", &d->uhci,
@@ -369,6 +376,7 @@ static void pci_piix3_init(Object *obj)
 
     object_initialize_child(obj, "pic", &d->pic, TYPE_ISA_PIC);
     object_initialize_child(obj, "rtc", &d->rtc, TYPE_MC146818_RTC);
+    object_initialize_child(obj, "ide", &d->ide, TYPE_PIIX3_IDE);
 }
 
 static Property pci_piix3_props[] = {
diff --git a/hw/i386/Kconfig b/hw/i386/Kconfig
index 1291f59896..7e53dc8f82 100644
--- a/hw/i386/Kconfig
+++ b/hw/i386/Kconfig
@@ -74,7 +74,6 @@ config I440FX
     select I8259
     select PCI_I440FX
     select PIIX3
-    select IDE_PIIX
     select DIMM
     select SMBIOS
     select FW_CFG_DMA
diff --git a/hw/isa/Kconfig b/hw/isa/Kconfig
index fccf095d07..b911306909 100644
--- a/hw/isa/Kconfig
+++ b/hw/isa/Kconfig
@@ -36,6 +36,7 @@ config PIIX3
     select ACPI_PIIX4
     select I8257
     select I8259
+    select IDE_PIIX
     select ISA_BUS
     select MC146818RTC
     select USB_UHCI
-- 
2.39.0