vt82c686: Add a method to VIA_ISA to raise ISA interrupts

Other functions in the VT82xx chips need to raise ISA interrupts. Keep
a reference to them in the device state and add via_isa_set_irq() to
allow setting their state.

Signed-off-by: BALATON Zoltan <[email protected]>
Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
Reviewed-by: Jiaxun Yang <[email protected]>
Message-Id: <778c04dc2c8affac060b8edf9e8d7dab3c3e04eb.1634259980.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <[email protected]>

Author: zbalaton

hw/isa/vt82c686.c

@@ -542,6 +542,7 @@ OBJECT_DECLARE_SIMPLE_TYPE(ViaISAState, VIA_ISA)
 struct ViaISAState {
     PCIDevice dev;
     qemu_irq cpu_intr;
+    qemu_irq *isa_irqs;
     ISABus *isa_bus;
     ViaSuperIOState *via_sio;
 };
@@ -567,6 +568,12 @@ static const TypeInfo via_isa_info = {
     },
 };
 
+void via_isa_set_irq(PCIDevice *d, int n, int level)
+{
+    ViaISAState *s = VIA_ISA(d);
+    qemu_set_irq(s->isa_irqs[n], level);
+}
+
 static void via_isa_request_i8259_irq(void *opaque, int irq, int level)
 {
     ViaISAState *s = opaque;
@@ -584,7 +591,8 @@ static void via_isa_realize(PCIDevice *d, Error **errp)
     isa_irq = qemu_allocate_irqs(via_isa_request_i8259_irq, s, 1);
     s->isa_bus = isa_bus_new(dev, get_system_memory(), pci_address_space_io(d),
                           &error_fatal);
-    isa_bus_irqs(s->isa_bus, i8259_init(s->isa_bus, *isa_irq));
+    s->isa_irqs = i8259_init(s->isa_bus, *isa_irq);
+    isa_bus_irqs(s->isa_bus, s->isa_irqs);
     i8254_pit_init(s->isa_bus, 0x40, 0, NULL);
     i8257_dma_init(s->isa_bus, 0);
     mc146818_rtc_init(s->isa_bus, 2000, NULL);

include/hw/isa/vt82c686.h

@@ -1,11 +1,15 @@
 #ifndef HW_VT82C686_H
 #define HW_VT82C686_H
 
+#include "hw/pci/pci.h"
+
 #define TYPE_VT82C686B_ISA "vt82c686b-isa"
 #define TYPE_VT82C686B_PM "vt82c686b-pm"
 #define TYPE_VT8231_ISA "vt8231-isa"
 #define TYPE_VT8231_PM "vt8231-pm"
 #define TYPE_VIA_AC97 "via-ac97"
 #define TYPE_VIA_MC97 "via-mc97"
 
+void via_isa_set_irq(PCIDevice *d, int n, int level);
+
 #endif