[PATCH 5/6] hw/ide/via: Connect IDE function output IRQs to the ISA function input

["Philippe Mathieu-Daudé" <f4bug@amsat.org>]

To avoid abusing isa_get_irq(NULL) using a hidden ISA bridge
under the hood, let the IDE function expose 2 output IRQs,
and connect them to the ISA function inputs when creating
the south bridge chipset model in vt82c686b_southbridge_init.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 hw/ide/via.c        | 19 +++++++++++++++++--
 hw/mips/fuloong2e.c |  9 ++++++++-
 2 files changed, 25 insertions(+), 3 deletions(-)

diff --git a/hw/ide/via.c b/hw/ide/via.c
index 6c667a92130..7887bf181e6 100644
--- a/hw/ide/via.c
+++ b/hw/ide/via.c
@@ -33,6 +33,17 @@
 #include "hw/ide/pci.h"
 #include "trace.h"
 
+#define TYPE_VIA_IDE "via-ide"
+OBJECT_DECLARE_SIMPLE_TYPE(VIAIDEState, VIA_IDE)
+
+struct VIAIDEState {
+    /* <private> */
+    PCIIDEState parent_obj;
+    /* <public> */
+
+    qemu_irq irq[2];
+};
+
 static uint64_t bmdma_read(void *opaque, hwaddr addr,
                            unsigned size)
 {
@@ -105,6 +116,7 @@ static void bmdma_setup_bar(PCIIDEState *d)
 static void via_ide_set_irq(void *opaque, int n, int level)
 {
     PCIDevice *d = PCI_DEVICE(opaque);
+    VIAIDEState *s = VIA_IDE(d);
 
     if (level) {
         d->config[0x70 + n * 8] |= 0x80;
@@ -112,7 +124,7 @@ static void via_ide_set_irq(void *opaque, int n, int level)
         d->config[0x70 + n * 8] &= ~0x80;
     }
 
-    qemu_set_irq(isa_get_irq(NULL, 14 + n), level);
+    qemu_set_irq(s->irq[n], level);
 }
 
 static void via_ide_reset(DeviceState *dev)
@@ -159,6 +171,7 @@ static void via_ide_reset(DeviceState *dev)
 
 static void via_ide_realize(PCIDevice *dev, Error **errp)
 {
+    VIAIDEState *s = VIA_IDE(dev);
     PCIIDEState *d = PCI_IDE(dev);
     DeviceState *ds = DEVICE(dev);
     uint8_t *pci_conf = dev->config;
@@ -188,6 +201,7 @@ static void via_ide_realize(PCIDevice *dev, Error **errp)
     bmdma_setup_bar(d);
     pci_register_bar(dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &d->bmdma_bar);
 
+    qdev_init_gpio_out_named(ds, s->irq, "ide-irq", ARRAY_SIZE(s->irq));
     qdev_init_gpio_in(ds, via_ide_set_irq, ARRAY_SIZE(d->bus));
     for (i = 0; i < ARRAY_SIZE(d->bus); i++) {
         ide_bus_new(&d->bus[i], sizeof(d->bus[i]), ds, i, MAX_IDE_DEVS);
@@ -227,8 +241,9 @@ static void via_ide_class_init(ObjectClass *klass, void *data)
 }
 
 static const TypeInfo via_ide_info = {
-    .name          = "via-ide",
+    .name          = TYPE_VIA_IDE,
     .parent        = TYPE_PCI_IDE,
+    .instance_size = sizeof(VIAIDEState),
     .class_init    = via_ide_class_init,
 };
 
diff --git a/hw/mips/fuloong2e.c b/hw/mips/fuloong2e.c
index 931385c760f..f1c5db13b78 100644
--- a/hw/mips/fuloong2e.c
+++ b/hw/mips/fuloong2e.c
@@ -203,12 +203,19 @@ static void vt82c686b_southbridge_init(PCIBus *pci_bus, int slot, qemu_irq intc,
                                        I2CBus **i2c_bus)
 {
     PCIDevice *dev;
+    DeviceState *isa;
 
     dev = pci_create_simple_multifunction(pci_bus, PCI_DEVFN(slot, 0), true,
                                           TYPE_VT82C686B_ISA);
-    qdev_connect_gpio_out_named(DEVICE(dev), "intr", 0, intc);
+    isa = DEVICE(dev);
+    qdev_connect_gpio_out_named(isa, "intr", 0, intc);
 
     dev = pci_create_simple(pci_bus, PCI_DEVFN(slot, 1), "via-ide");
+    for (unsigned i = 0; i < 2; i++) {
+        qdev_connect_gpio_out_named(DEVICE(dev), "ide-irq", i,
+                                    qdev_get_gpio_in_named(isa,
+                                                           "isa-irq", 14 + i));
+    }
     pci_ide_create_devs(dev);
 
     pci_create_simple(pci_bus, PCI_DEVFN(slot, 2), "vt82c686b-usb-uhci");
-- 
2.26.2