hw/char/serial.h: Extract serial-isa.h

The includes where updated based on compile errors. Now, the inclusion of the
header roughly matches Kconfig dependencies:

  # grep -r -e "select SERIAL_ISA"
  hw/ppc/Kconfig:    select SERIAL_ISA
  hw/isa/Kconfig:    select SERIAL_ISA
  hw/sparc64/Kconfig:    select SERIAL_ISA
  hw/i386/Kconfig:    select SERIAL_ISA
  hw/i386/Kconfig:    select SERIAL_ISA # for serial_hds_isa_init()

Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Link: https://lore.kernel.org/r/20240905073832.16222-3-shentey@gmail.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

hw/char/serial-isa.c

@@ -29,6 +29,7 @@
 #include "sysemu/sysemu.h"
 #include "hw/acpi/acpi_aml_interface.h"
 #include "hw/char/serial.h"
+#include "hw/char/serial-isa.h"
 #include "hw/isa/isa.h"
 #include "hw/qdev-properties.h"
 #include "migration/vmstate.h"

hw/i386/microvm-dt.c

@@ -34,7 +34,7 @@
 #include "qemu/cutils.h"
 #include "qapi/error.h"
 #include "sysemu/device_tree.h"
-#include "hw/char/serial.h"
+#include "hw/char/serial-isa.h"
 #include "hw/i386/fw_cfg.h"
 #include "hw/rtc/mc146818rtc.h"
 #include "hw/sysbus.h"

hw/i386/microvm.c

@@ -39,7 +39,7 @@
 #include "hw/intc/i8259.h"
 #include "hw/timer/i8254.h"
 #include "hw/rtc/mc146818rtc.h"
-#include "hw/char/serial.h"
+#include "hw/char/serial-isa.h"
 #include "hw/display/ramfb.h"
 #include "hw/i386/topology.h"
 #include "hw/i386/e820_memory_layout.h"

hw/i386/pc.c

@@ -25,7 +25,7 @@
 #include "qemu/osdep.h"
 #include "qemu/units.h"
 #include "hw/i386/pc.h"
-#include "hw/char/serial.h"
+#include "hw/char/serial-isa.h"
 #include "hw/char/parallel.h"
 #include "hw/hyperv/hv-balloon.h"
 #include "hw/i386/fw_cfg.h"

hw/isa/isa-superio.c

@@ -22,7 +22,7 @@
 #include "hw/qdev-properties.h"
 #include "hw/input/i8042.h"
 #include "hw/char/parallel-isa.h"
-#include "hw/char/serial.h"
+#include "hw/char/serial-isa.h"
 #include "trace.h"
 
 static void isa_superio_realize(DeviceState *dev, Error **errp)

hw/isa/vt82c686.c

@@ -17,7 +17,7 @@
 #include "hw/isa/vt82c686.h"
 #include "hw/block/fdc.h"
 #include "hw/char/parallel-isa.h"
-#include "hw/char/serial.h"
+#include "hw/char/serial-isa.h"
 #include "hw/pci/pci.h"
 #include "hw/qdev-properties.h"
 #include "hw/ide/pci.h"

hw/ppc/pnv.c

@@ -53,7 +53,7 @@
 #include "hw/ppc/pnv_pnor.h"
 
 #include "hw/isa/isa.h"
-#include "hw/char/serial.h"
+#include "hw/char/serial-isa.h"
 #include "hw/rtc/mc146818rtc.h"
 
 #include <libfdt.h>

hw/sparc64/sun4u.c

@@ -35,6 +35,7 @@
 #include "hw/qdev-properties.h"
 #include "hw/pci-host/sabre.h"
 #include "hw/char/serial.h"
+#include "hw/char/serial-isa.h"
 #include "hw/char/parallel-isa.h"
 #include "hw/rtc/m48t59.h"
 #include "migration/vmstate.h"

include/hw/char/serial-isa.h

@@ -0,0 +1,38 @@
+/*
+ * QEMU ISA 16550A UART emulation
+ *
+ * Copyright (c) 2003-2004 Fabrice Bellard
+ * Copyright (c) 2008 Citrix Systems, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef HW_SERIAL_ISA_H
+#define HW_SERIAL_ISA_H
+
+#include "hw/isa/isa.h"
+
+#define MAX_ISA_SERIAL_PORTS 4
+
+#define TYPE_ISA_SERIAL "isa-serial"
+void serial_hds_isa_init(ISABus *bus, int from, int to);
+void isa_serial_set_iobase(ISADevice *serial, hwaddr iobase);
+void isa_serial_set_enabled(ISADevice *serial, bool enabled);
+
+#endif

include/hw/char/serial.h

@@ -106,13 +106,4 @@ SerialMM *serial_mm_init(MemoryRegion *address_space,
                          qemu_irq irq, int baudbase,
                          Chardev *chr, enum device_endian end);
 
-/* serial-isa.c */
-
-#define MAX_ISA_SERIAL_PORTS 4
-
-#define TYPE_ISA_SERIAL "isa-serial"
-void serial_hds_isa_init(ISABus *bus, int from, int to);
-void isa_serial_set_iobase(ISADevice *serial, hwaddr iobase);
-void isa_serial_set_enabled(ISADevice *serial, bool enabled);
-
 #endif