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hv: add new hypercalls to create and destroy an emulated device in hypervisor

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Add HC_CREATE_VDEV and HC_DESTROY_VDEV two hypercalls that are used to
create and destroy an emulated device(PCI device or legacy device) in hypervisor

v3: 1) change HC_CREATE_DEVICE and HC_DESTROY_DEVICE to HC_CREATE_VDEV
       and HC_DESTROY_VDEV
    2) refine code style

v4: 1) remove unnecessary parameter
    2) add VM state check for HC_CREATE_VDEV and HC_DESTROY hypercalls

Tracked-On: #4853

Reviewed-by: Wang, Yu1 <yu1.wang@intel.com>
Signed-off-by: Yuan Liu <yuan1.liu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Yuan Liu
2020-08-26 16:20:01 +08:00
committed by wenlingz
parent 52bb9d6983
commit 8a34cf03ca
4 changed files with 172 additions and 0 deletions
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45
hypervisor/include/public/acrn_hv_defs.h
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@@ -69,6 +69,8 @@
#define HC_DEASSIGN_PCIDEV BASE_HC_ID(HC_ID, HC_ID_PCI_BASE + 0x06UL)
#define HC_ASSIGN_MMIODEV BASE_HC_ID(HC_ID, HC_ID_PCI_BASE + 0x07UL)
#define HC_DEASSIGN_MMIODEV BASE_HC_ID(HC_ID, HC_ID_PCI_BASE + 0x08UL)
#define HC_CREATE_VDEV BASE_HC_ID(HC_ID, HC_ID_PCI_BASE + 0x09UL)
#define HC_DESTROY_VDEV BASE_HC_ID(HC_ID, HC_ID_PCI_BASE + 0x0AUL)
/* DEBUG */
#define HC_ID_DBG_BASE 0x60UL
@@ -323,6 +325,49 @@ struct acrn_mmiodev {
} __attribute__((aligned(8)));
/**
* @brief Info to create or destroy a virtual PCI or legacy device for a VM
*
* the parameter for HC_CREATE_VDEV or HC_DESTROY_VDEV hypercall
*/
struct acrn_emul_dev {
/*
* the identifier of the device, the low 32 bits represent the vendor
* id and device id of PCI device and the high 32 bits represent the
* device number of the legacy device
*/
union dev_id_info {
uint64_t value;
struct fields_info {
uint16_t vendor_id;
uint16_t device_id;
uint32_t legacy_device_number;
} fields;
} dev_id;
/*
* the slot of the device, if the device is a PCI device, the slot
* represents BDF, otherwise it represents legacy device slot number
*/
uint32_t slot;
/** reserved for extension */
uint32_t reserved0;
/** the IO resource address of the device, initialized by ACRN-DM. */
uint32_t io_addr[6];
/** the IO resource size of the device, initialized by ACRN-DM. */
uint32_t io_size[6];
/** the options for the virtual device, initialized by ACRN-DM. */
uint8_t args[128];
/** reserved for extension */
uint64_t reserved1[8];
} __attribute__((aligned(8)));
/**
* Hypervisor api version info, return it for HC_GET_API_VERSION hypercall
*/