[Qemu-devel] [PATCH v1 1/2] include: update Hyper-V header to include SynIC timers defines

[Andrey Smetanin]

This patch brings in the necessary changes from the corresponding kernel
patchset.  It's included only for completeness; ideally these changes
should arrive via the standard kernel header pull.

Signed-off-by: Andrey Smetanin <address@hidden>
CC: Paolo Bonzini <address@hidden>
CC: Richard Henderson <address@hidden>
CC: Eduardo Habkost <address@hidden>
CC: "Andreas Färber" <address@hidden>
CC: Marcelo Tosatti <address@hidden>
CC: Denis V. Lunev <address@hidden>
CC: Roman Kagan <address@hidden>
CC: address@hidden

---
 include/standard-headers/asm-x86/hyperv.h | 99 +++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)

diff --git a/include/standard-headers/asm-x86/hyperv.h 
b/include/standard-headers/asm-x86/hyperv.h
index f9780f1..3684610 100644
--- a/include/standard-headers/asm-x86/hyperv.h
+++ b/include/standard-headers/asm-x86/hyperv.h
@@ -269,4 +269,103 @@ typedef struct _HV_REFERENCE_TSC_PAGE {
 #define HV_SYNIC_SINT_AUTO_EOI         (1ULL << 17)
 #define HV_SYNIC_SINT_VECTOR_MASK      (0xFF)
 
+#define HV_SYNIC_STIMER_COUNT          (4)
+
+/* Define synthetic interrupt controller message constants. */
+#define HV_MESSAGE_SIZE                        (256)
+#define HV_MESSAGE_PAYLOAD_BYTE_COUNT  (240)
+#define HV_MESSAGE_PAYLOAD_QWORD_COUNT (30)
+
+/* Define hypervisor message types. */
+enum hv_message_type {
+       HVMSG_NONE                      = 0x00000000,
+
+       /* Memory access messages. */
+       HVMSG_UNMAPPED_GPA              = 0x80000000,
+       HVMSG_GPA_INTERCEPT             = 0x80000001,
+
+       /* Timer notification messages. */
+       HVMSG_TIMER_EXPIRED                     = 0x80000010,
+
+       /* Error messages. */
+       HVMSG_INVALID_VP_REGISTER_VALUE = 0x80000020,
+       HVMSG_UNRECOVERABLE_EXCEPTION   = 0x80000021,
+       HVMSG_UNSUPPORTED_FEATURE               = 0x80000022,
+
+       /* Trace buffer complete messages. */
+       HVMSG_EVENTLOG_BUFFERCOMPLETE   = 0x80000040,
+
+       /* Platform-specific processor intercept messages. */
+       HVMSG_X64_IOPORT_INTERCEPT              = 0x80010000,
+       HVMSG_X64_MSR_INTERCEPT         = 0x80010001,
+       HVMSG_X64_CPUID_INTERCEPT               = 0x80010002,
+       HVMSG_X64_EXCEPTION_INTERCEPT   = 0x80010003,
+       HVMSG_X64_APIC_EOI                      = 0x80010004,
+       HVMSG_X64_LEGACY_FP_ERROR               = 0x80010005
+};
+
+/* Define synthetic interrupt controller message flags. */
+union hv_message_flags {
+       uint8_t asu8;
+       struct {
+               uint8_t msg_pending:1;
+               uint8_t reserved:7;
+       };
+};
+
+/* Define port identifier type. */
+union hv_port_id {
+       uint32_t asu32;
+       struct {
+               uint32_t id:24;
+               uint32_t reserved:8;
+       } u;
+};
+
+/* Define port type. */
+enum hv_port_type {
+       HVPORT_MSG      = 1,
+       HVPORT_EVENT            = 2,
+       HVPORT_MONITOR  = 3
+};
+
+/* Define synthetic interrupt controller message header. */
+struct hv_message_header {
+       enum hv_message_type message_type;
+       uint8_t payload_size;
+       union hv_message_flags message_flags;
+       uint8_t reserved[2];
+       union {
+               uint64_t sender;
+               union hv_port_id port;
+       };
+};
+
+/* Define timer message payload structure. */
+struct hv_timer_message_payload {
+       uint32_t timer_index;
+       uint32_t reserved;
+       uint64_t expiration_time;       /* When the timer expired */
+       uint64_t delivery_time; /* When the message was delivered */
+};
+
+/* Define synthetic interrupt controller message format. */
+struct hv_message {
+       struct hv_message_header header;
+       union {
+               uint64_t payload[HV_MESSAGE_PAYLOAD_QWORD_COUNT];
+       } u;
+};
+
+/* Define the synthetic interrupt message page layout. */
+struct hv_message_page {
+       struct hv_message sint_message[HV_SYNIC_SINT_COUNT];
+};
+
+#define HV_STIMER_ENABLE               (1ULL << 0)
+#define HV_STIMER_PERIODIC             (1ULL << 1)
+#define HV_STIMER_LAZY                 (1ULL << 2)
+#define HV_STIMER_AUTOENABLE           (1ULL << 3)
+#define HV_STIMER_SINT(config)         (uint8_t)(((config) >> 16) & 0x0F)
+
 #endif
-- 
2.4.3