hw/block/fdc-isa: Implement relocation and enabling/disabling for TYPE_ISA_FDC

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_fdc_set_{enabled,iobase}.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Message-Id: <20240114123911.4877-8-shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

diff --git a/hw/block/fdc-isa.c b/hw/block/fdc-isa.c
index 2d8a98ce7dd7ecab7d522400b6aa10914b525e84..e43dc532af8461e2ec4520b4fc94c2c0581fdf09 100644 (file)
--- a/hw/block/fdc-isa.c
+++ b/hw/block/fdc-isa.c
@@ -192,6 +192,20 @@ static Aml *build_fdinfo_aml(int idx, FloppyDriveType type)
     return dev;
 }
 
+void isa_fdc_set_iobase(ISADevice *fdc, hwaddr iobase)
+{
+    FDCtrlISABus *isa = ISA_FDC(fdc);
+
+    fdc->ioport_id = iobase;
+    isa->iobase = iobase;
+    portio_list_set_address(&isa->portio_list, isa->iobase);
+}
+
+void isa_fdc_set_enabled(ISADevice *fdc, bool enabled)
+{
+    portio_list_set_enabled(&ISA_FDC(fdc)->portio_list, enabled);
+}
+
 int cmos_get_fd_drive_type(FloppyDriveType fd0)
 {
     int val;

diff --git a/include/hw/block/fdc.h b/include/hw/block/fdc.h
index 35248c08379d74b4e2d3c880719d11e485834911..c367c5efeafe474fbfd5a8b98d49285061f5a3bb 100644 (file)
--- a/include/hw/block/fdc.h
+++ b/include/hw/block/fdc.h
@@ -14,6 +14,9 @@ void fdctrl_init_sysbus(qemu_irq irq, hwaddr mmio_base, DriveInfo **fds);
 void sun4m_fdctrl_init(qemu_irq irq, hwaddr io_base,
                        DriveInfo **fds, qemu_irq *fdc_tc);
 
+void isa_fdc_set_iobase(ISADevice *fdc, hwaddr iobase);
+void isa_fdc_set_enabled(ISADevice *fdc, bool enabled);
+
 FloppyDriveType isa_fdc_get_drive_type(ISADevice *fdc, int i);
 int cmos_get_fd_drive_type(FloppyDriveType fd0);