This is known is linux as VMWARE_PORT_CMD_GETHZ.
Signed-off-by: Don Slutz <address@hidden>
---
hw/vmport.c | 23 ++++++++++++++++++++++-
1 files changed, 22 insertions(+), 1 deletions(-)
diff --git a/hw/vmport.c b/hw/vmport.c
index a4f52ee..e856255 100644
--- a/hw/vmport.c
+++ b/hw/vmport.c
@@ -31,8 +31,9 @@
#define VMPORT_CMD_GETVERSION 0x0a
#define VMPORT_CMD_GETRAMSIZE 0x14
+#define VMPORT_CMD_GETHZ 0x2d
-#define VMPORT_ENTRIES 0x2c
+#define VMPORT_ENTRIES 0x2e
#define VMPORT_MAGIC 0x564D5868
typedef struct _VMPortState
@@ -102,6 +103,25 @@ static uint32_t vmport_cmd_ram_size(void
*opaque, uint32_t addr)
return ram_size;
}
+static uint32_t vmport_cmd_get_hz(void *opaque, uint32_t addr)
+{
+ CPUX86State *env = cpu_single_env;
+ uint64_t value;
+ const uint32_t apicHz = 1000000000L;
+
+ value = (uint64_t)env->tsc_khz * 1000;
+ if (value) {
+ /* apic-frequency (bus speed) */
+ env->regs[R_ECX] = apicHz;
+ /* High part of tsc-frequency */
+ env->regs[R_EBX] = (uint32_t)(value >> 32);
+ /* Low part of tsc-frequency */
+ return (uint32_t)value;
+ } else {
+ return env->regs[R_EAX];
+ }
+}
+
/* vmmouse helpers */
void vmmouse_get_data(uint32_t *data)
{
@@ -141,6 +161,7 @@ static int vmport_initfn(ISADevice *dev)
/* Register some generic port commands */
vmport_register(VMPORT_CMD_GETVERSION, vmport_cmd_get_version,
NULL);
vmport_register(VMPORT_CMD_GETRAMSIZE, vmport_cmd_ram_size,
NULL);
+ vmport_register(VMPORT_CMD_GETHZ, vmport_cmd_get_hz, NULL);
return 0;
}