[Qemu-devel] [4957] vmware backdoor interface fix (Chris Lalancette)

[Anthony Liguori <anthony@codemonkey.ws>]

Revision: 4957
          http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=4957
Author:   aliguori
Date:     2008-07-28 18:58:02 +0000 (Mon, 28 Jul 2008)

Log Message:
-----------
vmware backdoor interface fix (Chris Lalancette)

VMWare backdoor interface should work with IN/OUT port ops, but
currently only IN is supported. BOCHS bios uses OUT to query UUID.
The patch adds OUT support.

Signed-off-by: Chris Lalancette <clalance@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

Modified Paths:
--------------
    trunk/hw/vmport.c

Modified: trunk/hw/vmport.c
===================================================================
--- trunk/hw/vmport.c	2008-07-28 18:55:32 UTC (rev 4956)
+++ trunk/hw/vmport.c	2008-07-28 18:58:02 UTC (rev 4957)
@@ -72,6 +72,13 @@
     return s->func[command](s->opaque[command], addr);
 }
 
+static void vmport_ioport_write(void *opaque, uint32_t addr, uint32_t val)
+{
+    CPUState *env = cpu_single_env;
+
+    env->regs[R_EAX] = vmport_ioport_read(opaque, addr);
+}
+
 static uint32_t vmport_cmd_get_version(void *opaque, uint32_t addr)
 {
     CPUState *env = cpu_single_env;
@@ -89,6 +96,7 @@
 void vmport_init(void)
 {
     register_ioport_read(0x5658, 1, 4, vmport_ioport_read, &port_state);
+    register_ioport_write(0x5658, 1, 4, vmport_ioport_write, &port_state);
 
     /* Register some generic port commands */
     vmport_register(VMPORT_CMD_GETVERSION, vmport_cmd_get_version, NULL);