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>
qemu · Feb 14, 2024 · 1d1afd9 · 1d1afd9
1 parent 7812dbc
commit 1d1afd9
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Showing 2 changed files with 17 additions and 0 deletions.
diff --git 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
@@ -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 */