hw/net/lan9118: Extract lan9118_phy

A very similar implementation of the same device exists in imx_fec. Prepare for
a common implementation by extracting a device model into its own files.

Some migration state has been moved into the new device model which breaks
migration compatibility for the following machines:
* smdkc210
* realview-*
* vexpress-*
* kzm
* mps2-*

While breaking migration ABI, fix the size of the MII registers to be 16 bit,
as defined by IEEE 802.3u.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20241102125724.532843-2-shentey@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 37 insertions, 0 deletions

diff --git a/include/hw/net/lan9118_phy.h b/include/hw/net/lan9118_phy.h
new file mode 100644
index 0000000..af12fc3
--- /dev/null
+++ b/include/hw/net/lan9118_phy.h
@@ -0,0 +1,37 @@
+/*
+ * SMSC LAN9118 PHY emulation
+ *
+ * Copyright (c) 2009 CodeSourcery, LLC.
+ * Written by Paul Brook
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef HW_NET_LAN9118_PHY_H
+#define HW_NET_LAN9118_PHY_H
+
+#include "qom/object.h"
+#include "hw/sysbus.h"
+
+#define TYPE_LAN9118_PHY "lan9118-phy"
+OBJECT_DECLARE_SIMPLE_TYPE(Lan9118PhyState, LAN9118_PHY)
+
+typedef struct Lan9118PhyState {
+    SysBusDevice parent_obj;
+
+    uint16_t status;
+    uint16_t control;
+    uint16_t advertise;
+    uint16_t ints;
+    uint16_t int_mask;
+    qemu_irq irq;
+    bool link_down;
+} Lan9118PhyState;
+
+void lan9118_phy_update_link(Lan9118PhyState *s, bool link_down);
+void lan9118_phy_reset(Lan9118PhyState *s);
+uint16_t lan9118_phy_read(Lan9118PhyState *s, int reg);
+void lan9118_phy_write(Lan9118PhyState *s, int reg, uint16_t val);
+
+#endif