[PATCH v4 14/17] hw/net/bcm2838_genet: add migration state

[Marcelo Manzo <marcelomanzo@gmail.com>]

The device had no VMStateDescription, so none of its register or PHY
state was saved or migrated. Describe the MAC register block and the
PHY, shadow and expansion registers, and re-evaluate the interrupt
outputs after load, since they are derived from the registers.

Signed-off-by: Marcelo Manzo <marcelomanzo@gmail.com>
---
 hw/net/bcm2838_genet.c | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/hw/net/bcm2838_genet.c b/hw/net/bcm2838_genet.c
index e20358c8e7..643ee3ec0b 100644
--- a/hw/net/bcm2838_genet.c
+++ b/hw/net/bcm2838_genet.c
@@ -17,6 +17,7 @@
 #include "system/dma.h"
 #include "hw/core/registerfields.h"
 #include "hw/core/resettable.h"
+#include "migration/vmstate.h"
 #include "hw/net/bcm2838_genet.h"
 #include "trace.h"
 
@@ -1129,6 +1130,37 @@ static const Property genet_properties[] = {
     DEFINE_NIC_PROPERTIES(BCM2838GenetState, nic_conf),
 };
 
+static int bcm2838_genet_post_load(void *opaque, int version_id)
+{
+    BCM2838GenetState *s = opaque;
+
+    /* The interrupt outputs are derived from the register state */
+    bcm2838_genet_set_irq_default(s);
+    bcm2838_genet_set_irq_prio(s);
+
+    return 0;
+}
+
+static const VMStateDescription vmstate_bcm2838_genet = {
+    .name = "bcm2838-genet",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .post_load = bcm2838_genet_post_load,
+    .fields = (const VMStateField[]) {
+        VMSTATE_BUFFER_UNSAFE(regs, BCM2838GenetState, 0,
+                              sizeof(BCM2838GenetRegs)),
+        VMSTATE_BUFFER_UNSAFE(phy_regs, BCM2838GenetState, 0,
+                              sizeof(BCM2838GenetPhyRegs)),
+        VMSTATE_BUFFER_UNSAFE(phy_shd_regs, BCM2838GenetState, 0,
+                              sizeof(BCM2838GenetPhyShdRegs)),
+        VMSTATE_BUFFER_UNSAFE(phy_aux_ctl_shd_regs, BCM2838GenetState, 0,
+                              sizeof(BCM2838GenetPhyAuxShdRegs)),
+        VMSTATE_BUFFER_UNSAFE(phy_exp_shd_regs, BCM2838GenetState, 0,
+                              sizeof(BCM2838GenetPhyExpShdRegs)),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
 static void bcm2838_genet_class_init(ObjectClass *class, const void *data)
 {
     static ResettablePhases unused_parent_phases;
@@ -1136,6 +1168,7 @@ static void bcm2838_genet_class_init(ObjectClass *class, const void *data)
     ResettableClass *rc = RESETTABLE_CLASS(class);
 
     dc->realize = bcm2838_genet_realize;
+    dc->vmsd = &vmstate_bcm2838_genet;
     resettable_class_set_parent_phases(rc, NULL, bcm2838_genet_reset, NULL,
                                        &unused_parent_phases);
     device_class_set_props(dc, genet_properties);
-- 
2.55.0