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Date: Wed, 4 Jun 2008 16:20:33 +0300
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From: gleb@qumranet.com (Gleb Natapov)
Subject: [Qemu-devel] [PATCH 1/2] vmware backdoor interface fix
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To: qemu-devel@nongnu.org

Hello,

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

Signed-off-by: Gleb Natapov <glen <at> qumranet.com>

Index: qemu/hw/vmport.c
===================================================================
--- qemu.orig/hw/vmport.c	2008-06-04 14:02:04.000000000 +0300
+++ qemu/hw/vmport.c	2008-06-04 14:17:10.000000000 +0300
@@ -72,6 +72,13 @@ static uint32_t vmport_ioport_read(void 
     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 @@ static uint32_t vmport_cmd_ram_size(void
 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);
--
			Gleb.