[Qemu-devel] [PATCH V3 07/11] memory: implement e1000's MemoryRegionOps ref/unref

[Liu Ping Fan <qemulist@gmail.com>]

From: Liu Ping Fan <pingfank@linux.vnet.ibm.com>

With this, e1000 show to memory core that it can be protected by
refcnt.

Signed-off-by: Liu Ping Fan <pingfank@linux.vnet.ibm.com>
---
 hw/e1000.c |   17 +++++++++++++++++
 1 files changed, 17 insertions(+), 0 deletions(-)

diff --git a/hw/e1000.c b/hw/e1000.c
index ae8a6c5..df3a349 100644
--- a/hw/e1000.c
+++ b/hw/e1000.c
@@ -1037,9 +1037,26 @@ e1000_mmio_read(void *opaque, target_phys_addr_t addr, unsigned size)
     return 0;
 }
 
+static int e1000_mmio_ref(MemoryRegion *mr)
+{
+    E1000State *e1000 = container_of(mr, E1000State, mmio);
+
+    object_ref(OBJECT(e1000));
+    return 1;
+}
+
+static void e1000_mmio_unref(MemoryRegion *mr)
+{
+    E1000State *e1000 = container_of(mr, E1000State, mmio);
+
+    object_unref(OBJECT(e1000));
+}
+
 static const MemoryRegionOps e1000_mmio_ops = {
     .read = e1000_mmio_read,
     .write = e1000_mmio_write,
+    .ref = e1000_mmio_ref,
+    .unref = e1000_mmio_unref,
     .endianness = DEVICE_LITTLE_ENDIAN,
     .impl = {
         .min_access_size = 4,
-- 
1.7.4.4