hw/ide/via: Wire up IDE legacy interrupts in host device

Resolves circular depencency between IDE function and south bridge.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20230531211043.41724-3-shentey@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

hw/ide/via.c

@@ -31,6 +31,7 @@
 #include "sysemu/dma.h"
 #include "hw/isa/vt82c686.h"
 #include "hw/ide/pci.h"
+#include "hw/irq.h"
 #include "trace.h"
 
 static uint64_t bmdma_read(void *opaque, hwaddr addr,
@@ -104,15 +105,16 @@ static void bmdma_setup_bar(PCIIDEState *d)
 
 static void via_ide_set_irq(void *opaque, int n, int level)
 {
-    PCIDevice *d = PCI_DEVICE(opaque);
+    PCIIDEState *s = opaque;
+    PCIDevice *d = PCI_DEVICE(s);
 
     if (level) {
         d->config[0x70 + n * 8] |= 0x80;
     } else {
         d->config[0x70 + n * 8] &= ~0x80;
     }
 
-    via_isa_set_irq(pci_get_function_0(d), 14 + n, level);
+    qemu_set_irq(s->isa_irq[n], level);
 }
 
 static void via_ide_reset(DeviceState *dev)

hw/isa/vt82c686.c

@@ -692,6 +692,10 @@ static void via_isa_realize(PCIDevice *d, Error **errp)
     if (!qdev_realize(DEVICE(&s->ide), BUS(pci_bus), errp)) {
         return;
     }
+    for (i = 0; i < 2; i++) {
+        qdev_connect_gpio_out_named(DEVICE(&s->ide), "isa-irq", i,
+                                    s->isa_irqs_in[14 + i]);
+    }
 
     /* Functions 2-3: USB Ports */
     for (i = 0; i < ARRAY_SIZE(s->uhci); i++) {
@@ -814,6 +818,7 @@ static void vt8231_isa_reset(DeviceState *dev)
                  PCI_COMMAND_MASTER | PCI_COMMAND_SPECIAL);
     pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_DEVSEL_MEDIUM);
 
+    pci_conf[0x4c] = 0x04; /* IDE interrupt Routing */
     pci_conf[0x58] = 0x40; /* Miscellaneous Control 0 */
     pci_conf[0x67] = 0x08; /* Fast IR Config */
     pci_conf[0x6b] = 0x01; /* Fast IR I/O Base */