diff options
Diffstat (limited to 'drivers/virt/acrn/acrn_drv.h')
| -rw-r--r-- | drivers/virt/acrn/acrn_drv.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/drivers/virt/acrn/acrn_drv.h b/drivers/virt/acrn/acrn_drv.h index e47a45280eea..68bd8db6c8be 100644 --- a/drivers/virt/acrn/acrn_drv.h +++ b/drivers/virt/acrn/acrn_drv.h @@ -12,10 +12,15 @@ extern struct miscdevice acrn_dev; +#define ACRN_NAME_LEN 16 #define ACRN_MEM_MAPPING_MAX 256 #define ACRN_MEM_REGION_ADD 0 #define ACRN_MEM_REGION_DEL 2 + +struct acrn_vm; +struct acrn_ioreq_client; + /** * struct vm_memory_region_op - Hypervisor memory operation * @type: Operation type (ACRN_MEM_REGION_*) @@ -75,9 +80,63 @@ struct vm_memory_mapping { size_t size; }; +/** + * struct acrn_ioreq_buffer - Data for setting the ioreq buffer of User VM + * @ioreq_buf: The GPA of the IO request shared buffer of a VM + * + * The parameter for the HC_SET_IOREQ_BUFFER hypercall used to set up + * the shared I/O request buffer between Service VM and ACRN hypervisor. + */ +struct acrn_ioreq_buffer { + u64 ioreq_buf; +}; + +struct acrn_ioreq_range { + struct list_head list; + u32 type; + u64 start; + u64 end; +}; + +#define ACRN_IOREQ_CLIENT_DESTROYING 0U +typedef int (*ioreq_handler_t)(struct acrn_ioreq_client *client, + struct acrn_io_request *req); +/** + * struct acrn_ioreq_client - Structure of I/O client. + * @name: Client name + * @vm: The VM that the client belongs to + * @list: List node for this acrn_ioreq_client + * @is_default: If this client is the default one + * @flags: Flags (ACRN_IOREQ_CLIENT_*) + * @range_list: I/O ranges + * @range_lock: Lock to protect range_list + * @ioreqs_map: The pending I/O requests bitmap. + * @handler: I/O requests handler of this client + * @thread: The thread which executes the handler + * @wq: The wait queue for the handler thread parking + * @priv: Data for the thread + */ +struct acrn_ioreq_client { + char name[ACRN_NAME_LEN]; + struct acrn_vm *vm; + struct list_head list; + bool is_default; + unsigned long flags; + struct list_head range_list; + rwlock_t range_lock; + DECLARE_BITMAP(ioreqs_map, ACRN_IO_REQUEST_MAX); + ioreq_handler_t handler; + struct task_struct *thread; + wait_queue_head_t wq; + void *priv; +}; + #define ACRN_INVALID_VMID (0xffffU) #define ACRN_VM_FLAG_DESTROYED 0U +#define ACRN_VM_FLAG_CLEARING_IOREQ 1U +extern struct list_head acrn_vm_list; +extern rwlock_t acrn_vm_list_lock; /** * struct acrn_vm - Properties of ACRN User VM. * @list: Entry within global list of all VMs. @@ -90,6 +149,11 @@ struct vm_memory_mapping { * &acrn_vm.regions_mapping_count. * @regions_mapping: Memory mappings of this VM. * @regions_mapping_count: Number of memory mapping of this VM. + * @ioreq_clients_lock: Lock to protect ioreq_clients and default_client + * @ioreq_clients: The I/O request clients list of this VM + * @default_client: The default I/O request client + * @ioreq_buf: I/O request shared buffer + * @ioreq_page: The page of the I/O request shared buffer */ struct acrn_vm { struct list_head list; @@ -99,6 +163,11 @@ struct acrn_vm { struct mutex regions_mapping_lock; struct vm_memory_mapping regions_mapping[ACRN_MEM_MAPPING_MAX]; int regions_mapping_count; + spinlock_t ioreq_clients_lock; + struct list_head ioreq_clients; + struct acrn_ioreq_client *default_client; + struct acrn_io_request_buffer *ioreq_buf; + struct page *ioreq_page; }; struct acrn_vm *acrn_vm_create(struct acrn_vm *vm, @@ -112,4 +181,17 @@ int acrn_vm_memseg_unmap(struct acrn_vm *vm, struct acrn_vm_memmap *memmap); int acrn_vm_ram_map(struct acrn_vm *vm, struct acrn_vm_memmap *memmap); void acrn_vm_all_ram_unmap(struct acrn_vm *vm); +int acrn_ioreq_init(struct acrn_vm *vm, u64 buf_vma); +void acrn_ioreq_deinit(struct acrn_vm *vm); +int acrn_ioreq_intr_setup(void); +void acrn_ioreq_intr_remove(void); +void acrn_ioreq_request_clear(struct acrn_vm *vm); +int acrn_ioreq_client_wait(struct acrn_ioreq_client *client); +int acrn_ioreq_request_default_complete(struct acrn_vm *vm, u16 vcpu); +struct acrn_ioreq_client *acrn_ioreq_client_create(struct acrn_vm *vm, + ioreq_handler_t handler, + void *data, bool is_default, + const char *name); +void acrn_ioreq_client_destroy(struct acrn_ioreq_client *client); + #endif /* __ACRN_HSM_DRV_H */ |