[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH 08/14] hw/i386/vmport: Add support for CMD_GETTIME
From: |
Liran Alon |
Subject: |
[PATCH 08/14] hw/i386/vmport: Add support for CMD_GETTIME |
Date: |
Tue, 10 Mar 2020 01:54:05 +0200 |
This command is used by guest to gettimeofday() from host.
See usage example in open-vm-tools TimeSyncReadHost() function.
Reviewed-by: Nikita Leshenko <address@hidden>
Signed-off-by: Liran Alon <address@hidden>
---
hw/i386/vmport.c | 21 +++++++++++++++++++++
include/hw/i386/pc.h | 1 +
2 files changed, 22 insertions(+)
diff --git a/hw/i386/vmport.c b/hw/i386/vmport.c
index 7687f3368a55..21253933215b 100644
--- a/hw/i386/vmport.c
+++ b/hw/i386/vmport.c
@@ -53,6 +53,7 @@ typedef struct VMPortState {
uint32_t vmx_version;
uint8_t vmx_type;
+ uint32_t max_time_lag_us;
} VMPortState;
static VMPortState *port_state;
@@ -142,6 +143,20 @@ static uint32_t vmport_cmd_ram_size(void *opaque, uint32_t
addr)
return ram_size;
}
+static uint32_t vmport_cmd_time(void *opaque, uint32_t addr)
+{
+ X86CPU *cpu = X86_CPU(current_cpu);
+ qemu_timeval tv;
+
+ if (qemu_gettimeofday(&tv) < 0) {
+ return UINT32_MAX;
+ }
+
+ cpu->env.regs[R_EBX] = (uint32_t)tv.tv_usec;
+ cpu->env.regs[R_ECX] = port_state->max_time_lag_us;
+ return (uint32_t)tv.tv_sec;
+}
+
/* vmmouse helpers */
void vmmouse_get_data(uint32_t *data)
{
@@ -186,6 +201,7 @@ static void vmport_realizefn(DeviceState *dev, Error **errp)
vmport_register(VMPORT_CMD_GETVERSION, vmport_cmd_get_version, NULL);
vmport_register(VMPORT_CMD_GETBIOSUUID, vmport_cmd_get_bios_uuid, NULL);
vmport_register(VMPORT_CMD_GETRAMSIZE, vmport_cmd_ram_size, NULL);
+ vmport_register(VMPORT_CMD_GETTIME, vmport_cmd_time, NULL);
}
static Property vmport_properties[] = {
@@ -193,6 +209,11 @@ static Property vmport_properties[] = {
DEFINE_PROP_UINT32("vmx-version", VMPortState, vmx_version, 6),
DEFINE_PROP_UINT8("vmx-type", VMPortState, vmx_type,
VMX_TYPE_SCALABLE_SERVER),
+ /*
+ * Max amount of time lag that can go uncorrected.
+ * Value taken from VMware Workstation 5.5.
+ **/
+ DEFINE_PROP_UINT32("max-time-lag", VMPortState, max_time_lag_us, 1000000),
DEFINE_PROP_END_OF_LIST(),
};
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index ea87eb93511e..3ab3541b3a90 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -142,6 +142,7 @@ typedef enum {
VMPORT_CMD_GETVERSION = 10,
VMPORT_CMD_GETBIOSUUID = 19,
VMPORT_CMD_GETRAMSIZE = 20,
+ VMPORT_CMD_GETTIME = 23,
VMPORT_CMD_VMMOUSE_DATA = 39,
VMPORT_CMD_VMMOUSE_STATUS = 40,
VMPORT_CMD_VMMOUSE_COMMAND = 41,
--
2.20.1
- Re: [PATCH 07/14] hw/i386/vmport: Add support for CMD_GETBIOSUUID, (continued)
Re: [PATCH 07/14] hw/i386/vmport: Add support for CMD_GETBIOSUUID, Michael S. Tsirkin, 2020/03/10
- Re: [PATCH 07/14] hw/i386/vmport: Add support for CMD_GETBIOSUUID, Liran Alon, 2020/03/10
- Re: [PATCH 07/14] hw/i386/vmport: Add support for CMD_GETBIOSUUID, Michael S. Tsirkin, 2020/03/10
- Re: [PATCH 07/14] hw/i386/vmport: Add support for CMD_GETBIOSUUID, Liran Alon, 2020/03/10
- Re: [PATCH 07/14] hw/i386/vmport: Add support for CMD_GETBIOSUUID, Liran Alon, 2020/03/10
- Re: [PATCH 07/14] hw/i386/vmport: Add support for CMD_GETBIOSUUID, Michael S. Tsirkin, 2020/03/10
- Re: [PATCH 07/14] hw/i386/vmport: Add support for CMD_GETBIOSUUID, Liran Alon, 2020/03/10
[PATCH 08/14] hw/i386/vmport: Add support for CMD_GETTIME,
Liran Alon <=
Re: [PATCH 00/14]: hw/i386/vmport: Bug fixes and improvements, no-reply, 2020/03/09
Re: [PATCH 00/14]: hw/i386/vmport: Bug fixes and improvements, no-reply, 2020/03/09
Re: [PATCH 00/14]: hw/i386/vmport: Bug fixes and improvements, no-reply, 2020/03/09
Re: [PATCH 00/14]: hw/i386/vmport: Bug fixes and improvements, no-reply, 2020/03/09
Re: [PATCH 00/14]: hw/i386/vmport: Bug fixes and improvements, no-reply, 2020/03/09
Re: [PATCH 00/14]: hw/i386/vmport: Bug fixes and improvements, no-reply, 2020/03/09
Re: [PATCH 00/14]: hw/i386/vmport: Bug fixes and improvements, no-reply, 2020/03/09
Re: [PATCH 00/14]: hw/i386/vmport: Bug fixes and improvements, no-reply, 2020/03/09