diff options
Diffstat (limited to 'hw/i386/vmport.c')
| -rw-r--r-- | hw/i386/vmport.c | 183 |
1 files changed, 169 insertions, 14 deletions
diff --git a/hw/i386/vmport.c b/hw/i386/vmport.c index 1aaaab691a..89bda9108e 100644 --- a/hw/i386/vmport.c +++ b/hw/i386/vmport.c @@ -21,20 +21,47 @@ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ + +/* + * Guest code that interacts with this virtual device can be found + * in VMware open-vm-tools open-source project: + * https://github.com/vmware/open-vm-tools + */ + #include "qemu/osdep.h" #include "hw/isa/isa.h" +#include "hw/i386/vmport.h" +#include "hw/qdev-properties.h" +#include "sysemu/sysemu.h" #include "sysemu/hw_accel.h" +#include "sysemu/qtest.h" #include "qemu/log.h" -#include "vmport.h" #include "cpu.h" #include "trace.h" -#define VMPORT_CMD_GETVERSION 0x0a -#define VMPORT_CMD_GETRAMSIZE 0x14 - -#define VMPORT_ENTRIES 0x2c #define VMPORT_MAGIC 0x564D5868 +/* Compatibility flags for migration */ +#define VMPORT_COMPAT_READ_SET_EAX_BIT 0 +#define VMPORT_COMPAT_SIGNAL_UNSUPPORTED_CMD_BIT 1 +#define VMPORT_COMPAT_REPORT_VMX_TYPE_BIT 2 +#define VMPORT_COMPAT_CMDS_V2_BIT 3 +#define VMPORT_COMPAT_READ_SET_EAX \ + (1 << VMPORT_COMPAT_READ_SET_EAX_BIT) +#define VMPORT_COMPAT_SIGNAL_UNSUPPORTED_CMD \ + (1 << VMPORT_COMPAT_SIGNAL_UNSUPPORTED_CMD_BIT) +#define VMPORT_COMPAT_REPORT_VMX_TYPE \ + (1 << VMPORT_COMPAT_REPORT_VMX_TYPE_BIT) +#define VMPORT_COMPAT_CMDS_V2 \ + (1 << VMPORT_COMPAT_CMDS_V2_BIT) + +/* vCPU features reported by CMD_GET_VCPU_INFO */ +#define VCPU_INFO_SLC64_BIT 0 +#define VCPU_INFO_SYNC_VTSCS_BIT 1 +#define VCPU_INFO_HV_REPLAY_OK_BIT 2 +#define VCPU_INFO_LEGACY_X2APIC_BIT 3 +#define VCPU_INFO_RESERVED_BIT 31 + #define VMPORT(obj) OBJECT_CHECK(VMPortState, (obj), TYPE_VMPORT) typedef struct VMPortState { @@ -43,15 +70,19 @@ typedef struct VMPortState { MemoryRegion io; VMPortReadFunc *func[VMPORT_ENTRIES]; void *opaque[VMPORT_ENTRIES]; + + uint32_t vmware_vmx_version; + uint8_t vmware_vmx_type; + + uint32_t compat_flags; } VMPortState; static VMPortState *port_state; -void vmport_register(unsigned char command, VMPortReadFunc *func, void *opaque) +void vmport_register(VMPortCommand command, VMPortReadFunc *func, void *opaque) { - if (command >= VMPORT_ENTRIES) { - return; - } + assert(command < VMPORT_ENTRIES); + assert(port_state); trace_vmport_register(command, func, opaque); port_state->func[command] = func; @@ -64,25 +95,51 @@ static uint64_t vmport_ioport_read(void *opaque, hwaddr addr, VMPortState *s = opaque; CPUState *cs = current_cpu; X86CPU *cpu = X86_CPU(cs); - CPUX86State *env = &cpu->env; + CPUX86State *env; unsigned char command; uint32_t eax; + if (qtest_enabled()) { + return -1; + } + env = &cpu->env; cpu_synchronize_state(cs); eax = env->regs[R_EAX]; if (eax != VMPORT_MAGIC) { - return eax; + goto err; } command = env->regs[R_ECX]; trace_vmport_command(command); if (command >= VMPORT_ENTRIES || !s->func[command]) { qemu_log_mask(LOG_UNIMP, "vmport: unknown command %x\n", command); - return eax; + goto err; } - return s->func[command](s->opaque[command], addr); + eax = s->func[command](s->opaque[command], addr); + goto out; + +err: + if (s->compat_flags & VMPORT_COMPAT_SIGNAL_UNSUPPORTED_CMD) { + eax = UINT32_MAX; + } + +out: + /* + * The call above to cpu_synchronize_state() gets vCPU registers values + * to QEMU but also cause QEMU to write QEMU vCPU registers values to + * vCPU implementation (e.g. Accelerator such as KVM) just before + * resuming guest. + * + * Therefore, in order to make IOPort return value propagate to + * guest EAX, we need to explicitly update QEMU EAX register value. + */ + if (s->compat_flags & VMPORT_COMPAT_READ_SET_EAX) { + cpu->env.regs[R_EAX] = eax; + } + + return eax; } static void vmport_ioport_write(void *opaque, hwaddr addr, @@ -90,6 +147,9 @@ static void vmport_ioport_write(void *opaque, hwaddr addr, { X86CPU *cpu = X86_CPU(current_cpu); + if (qtest_enabled()) { + return; + } cpu->env.regs[R_EAX] = vmport_ioport_read(opaque, addr, 4); } @@ -97,18 +157,69 @@ static uint32_t vmport_cmd_get_version(void *opaque, uint32_t addr) { X86CPU *cpu = X86_CPU(current_cpu); + if (qtest_enabled()) { + return -1; + } cpu->env.regs[R_EBX] = VMPORT_MAGIC; - return 6; + if (port_state->compat_flags & VMPORT_COMPAT_REPORT_VMX_TYPE) { + cpu->env.regs[R_ECX] = port_state->vmware_vmx_type; + } + return port_state->vmware_vmx_version; +} + +static uint32_t vmport_cmd_get_bios_uuid(void *opaque, uint32_t addr) +{ + X86CPU *cpu = X86_CPU(current_cpu); + uint32_t *uuid_parts = (uint32_t *)(qemu_uuid.data); + + cpu->env.regs[R_EAX] = le32_to_cpu(uuid_parts[0]); + cpu->env.regs[R_EBX] = le32_to_cpu(uuid_parts[1]); + cpu->env.regs[R_ECX] = le32_to_cpu(uuid_parts[2]); + cpu->env.regs[R_EDX] = le32_to_cpu(uuid_parts[3]); + return cpu->env.regs[R_EAX]; } static uint32_t vmport_cmd_ram_size(void *opaque, uint32_t addr) { X86CPU *cpu = X86_CPU(current_cpu); + if (qtest_enabled()) { + return -1; + } cpu->env.regs[R_EBX] = 0x1177; return ram_size; } +static uint32_t vmport_cmd_get_hz(void *opaque, uint32_t addr) +{ + X86CPU *cpu = X86_CPU(current_cpu); + + if (cpu->env.tsc_khz && cpu->env.apic_bus_freq) { + uint64_t tsc_freq = (uint64_t)cpu->env.tsc_khz * 1000; + + cpu->env.regs[R_ECX] = cpu->env.apic_bus_freq; + cpu->env.regs[R_EBX] = (uint32_t)(tsc_freq >> 32); + cpu->env.regs[R_EAX] = (uint32_t)tsc_freq; + } else { + /* Signal cmd as not supported */ + cpu->env.regs[R_EBX] = UINT32_MAX; + } + + return cpu->env.regs[R_EAX]; +} + +static uint32_t vmport_cmd_get_vcpu_info(void *opaque, uint32_t addr) +{ + X86CPU *cpu = X86_CPU(current_cpu); + uint32_t ret = 0; + + if (cpu->env.features[FEAT_1_ECX] & CPUID_EXT_X2APIC) { + ret |= 1 << VCPU_INFO_LEGACY_X2APIC_BIT; + } + + return ret; +} + static const MemoryRegionOps vmport_ops = { .read = vmport_ioport_read, .write = vmport_ioport_write, @@ -128,11 +239,54 @@ static void vmport_realizefn(DeviceState *dev, Error **errp) isa_register_ioport(isadev, &s->io, 0x5658); port_state = s; + /* 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); + if (s->compat_flags & VMPORT_COMPAT_CMDS_V2) { + vmport_register(VMPORT_CMD_GETBIOSUUID, vmport_cmd_get_bios_uuid, NULL); + vmport_register(VMPORT_CMD_GETHZ, vmport_cmd_get_hz, NULL); + vmport_register(VMPORT_CMD_GET_VCPU_INFO, vmport_cmd_get_vcpu_info, + NULL); + } } +static Property vmport_properties[] = { + /* Used to enforce compatibility for migration */ + DEFINE_PROP_BIT("x-read-set-eax", VMPortState, compat_flags, + VMPORT_COMPAT_READ_SET_EAX_BIT, true), + DEFINE_PROP_BIT("x-signal-unsupported-cmd", VMPortState, compat_flags, + VMPORT_COMPAT_SIGNAL_UNSUPPORTED_CMD_BIT, true), + DEFINE_PROP_BIT("x-report-vmx-type", VMPortState, compat_flags, + VMPORT_COMPAT_REPORT_VMX_TYPE_BIT, true), + DEFINE_PROP_BIT("x-cmds-v2", VMPortState, compat_flags, + VMPORT_COMPAT_CMDS_V2_BIT, true), + + /* Default value taken from open-vm-tools code VERSION_MAGIC definition */ + DEFINE_PROP_UINT32("vmware-vmx-version", VMPortState, + vmware_vmx_version, 6), + /* + * Value determines which VMware product type host report itself to guest. + * + * Most guests are fine with exposing host as VMware ESX server. + * Some legacy/proprietary guests hard-code a given type. + * + * For a complete list of values, refer to enum VMXType at open-vm-tools + * project (Defined at lib/include/vm_vmx_type.h). + * + * Reasonable options: + * 0 - Unset + * 1 - VMware Express (deprecated) + * 2 - VMware ESX Server + * 3 - VMware Server (Deprecated) + * 4 - VMware Workstation + * 5 - ACE 1.x (Deprecated) + */ + DEFINE_PROP_UINT8("vmware-vmx-type", VMPortState, vmware_vmx_type, 2), + + DEFINE_PROP_END_OF_LIST(), +}; + static void vmport_class_initfn(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); @@ -140,6 +294,7 @@ static void vmport_class_initfn(ObjectClass *klass, void *data) dc->realize = vmport_realizefn; /* Reason: realize sets global port_state */ dc->user_creatable = false; + device_class_set_props(dc, vmport_properties); } static const TypeInfo vmport_info = { |