DM: add vmm interface to get px data

The interface will be used to interact with VHM service via IOCTL.

Signed-off-by: Victor Sun <victor.sun@intel.com>
Acked-by: Kevin Tian <kevin.tian@intel.com>

Author: jsun26intel

devicemodel/core/vmmapi.c

@@ -720,3 +720,9 @@ vm_get_device_fd(struct vmctx *ctx)
 {
 	return ctx->fd;
 }
+
+int
+vm_get_cpu_state(struct vmctx *ctx, void *state_buf)
+{
+	return ioctl(ctx->fd, IC_PM_GET_CPU_STATE, state_buf);
+}

devicemodel/include/public/acrn_common.h

@@ -302,6 +302,39 @@ struct acrn_vm_pci_msix_remap {
  */
 #define GUEST_CFG_OFFSET	0xd0000
 
+/**
+ * @brief Info The power state data of a VCPU.
+ *
+ */
+struct cpu_px_data {
+	uint64_t core_frequency;	/* megahertz */
+	uint64_t power;			/* milliWatts */
+	uint64_t transition_latency;	/* microseconds */
+	uint64_t bus_master_latency;	/* microseconds */
+	uint64_t control;		/* control value */
+	uint64_t status;		/* success indicator */
+} __attribute__((aligned(8)));
+
+/**
+ * @brief Info PM command from DM/VHM.
+ *
+ * The command would specify request type(i.e. get px count or data) for
+ * specific VM and specific VCPU with specific state number.like P(n).
+ */
+#define PMCMD_VMID_MASK		0xff000000
+#define PMCMD_VCPUID_MASK	0x00ff0000
+#define PMCMD_STATE_NUM_MASK	0x0000ff00
+#define PMCMD_TYPE_MASK		0x000000ff
+
+#define PMCMD_VMID_SHIFT	24
+#define PMCMD_VCPUID_SHIFT	16
+#define PMCMD_STATE_NUM_SHIFT	8
+
+enum pm_cmd_type {
+	PMCMD_GET_PX_CNT,
+	PMCMD_GET_PX_DATA,
+};
+
 /**
  * @}
  */

devicemodel/include/public/vhm_ioctl_defs.h

@@ -101,6 +101,10 @@
 #define IC_SET_PTDEV_INTR_INFO         _IC_ID(IC_ID, IC_ID_PCI_BASE + 0x03)
 #define IC_RESET_PTDEV_INTR_INFO       _IC_ID(IC_ID, IC_ID_PCI_BASE + 0x04)
 
+/* Power management */
+#define IC_ID_PM_BASE                   0x60UL
+#define IC_PM_GET_CPU_STATE            _IC_ID(IC_ID, IC_ID_PM_BASE + 0x00)
+
 /**
  * struct vm_memseg - memory segment info for guest
  *

devicemodel/include/vmmapi.h

@@ -147,4 +147,7 @@ int	vm_set_ptdev_intx_info(struct vmctx *ctx, uint16_t virt_bdf,
 int	vm_reset_ptdev_intx_info(struct vmctx *ctx, int virt_pin, bool pic_pin);
 
 int	vm_create_vcpu(struct vmctx *ctx, int vcpu_id);
+
+int	vm_get_cpu_state(struct vmctx *ctx, void *state_buf);
+
 #endif	/* _VMMAPI_H_ */