hw/char/parallel-isa: Implement relocation and enabling/disabling for TYPE_ISA_PARALLEL

The real SuperI/O chips emulated by QEMU allow for relocating and enabling or
disabling their SuperI/O functions via software. So far this is not implemented.
Prepare for that by adding isa_parallel_set_{enabled,iobase}.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Message-Id: <20240114123911.4877-10-shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

diff --git a/hw/char/parallel-isa.c b/hw/char/parallel-isa.c
index ab0f879998d71256dfef43649a1ac16620706072..a5ce6ee13a43272edc7eed95648adf40f5f5c5f8 100644 (file)
--- a/hw/char/parallel-isa.c
+++ b/hw/char/parallel-isa.c
@@ -41,3 +41,17 @@ void parallel_hds_isa_init(ISABus *bus, int n)
         }
     }
 }
+
+void isa_parallel_set_iobase(ISADevice *parallel, hwaddr iobase)
+{
+    ISAParallelState *s = ISA_PARALLEL(parallel);
+
+    parallel->ioport_id = iobase;
+    s->iobase = iobase;
+    portio_list_set_address(&s->portio_list, s->iobase);
+}
+
+void isa_parallel_set_enabled(ISADevice *parallel, bool enabled)
+{
+    portio_list_set_enabled(&ISA_PARALLEL(parallel)->portio_list, enabled);
+}

diff --git a/include/hw/char/parallel-isa.h b/include/hw/char/parallel-isa.h
index 3b783bd08d590d8b836e3e56227176186c31aa5c..5284b2ffecc58efcff1e7eae4969dd119e457a48 100644 (file)
--- a/include/hw/char/parallel-isa.h
+++ b/include/hw/char/parallel-isa.h
@@ -29,4 +29,7 @@ struct ISAParallelState {
     PortioList portio_list;
 };
 
+void isa_parallel_set_iobase(ISADevice *parallel, hwaddr iobase);
+void isa_parallel_set_enabled(ISADevice *parallel, bool enabled);
+
 #endif /* HW_PARALLEL_ISA_H */