/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved. */ #ifndef _NE_MISC_DEV_H_ #define _NE_MISC_DEV_H_ #include <linux/cpumask.h> #include <linux/list.h> #include <linux/miscdevice.h> #include <linux/mm.h> #include <linux/mutex.h> #include <linux/pci.h> #include <linux/wait.h> #include "ne_pci_dev.h" /** * struct ne_mem_region - Entry in the enclave user space memory regions list. * @mem_region_list_entry: Entry in the list of enclave memory regions. * @memory_size: Size of the user space memory region. * @nr_pages: Number of pages that make up the memory region. * @pages: Pages that make up the user space memory region. * @userspace_addr: User space address of the memory region. */ struct ne_mem_region { … }; /** * struct ne_enclave - Per-enclave data used for enclave lifetime management. * @enclave_info_mutex : Mutex for accessing this internal state. * @enclave_list_entry : Entry in the list of created enclaves. * @eventq: Wait queue used for out-of-band event notifications * triggered from the PCI device event handler to * the enclave process via the poll function. * @has_event: Variable used to determine if the out-of-band event * was triggered. * @max_mem_regions: The maximum number of memory regions that can be * handled by the hypervisor. * @mem_regions_list: Enclave user space memory regions list. * @mem_size: Enclave memory size. * @mm : Enclave process abstraction mm data struct. * @nr_mem_regions: Number of memory regions associated with the enclave. * @nr_parent_vm_cores : The size of the threads per core array. The * total number of CPU cores available on the * parent / primary VM. * @nr_threads_per_core: The number of threads that a full CPU core has. * @nr_vcpus: Number of vcpus associated with the enclave. * @numa_node: NUMA node of the enclave memory and CPUs. * @slot_uid: Slot unique id mapped to the enclave. * @state: Enclave state, updated during enclave lifetime. * @threads_per_core: Enclave full CPU cores array, indexed by core id, * consisting of cpumasks with all their threads. * Full CPU cores are taken from the NE CPU pool * and are available to the enclave. * @vcpu_ids: Cpumask of the vCPUs that are set for the enclave. */ struct ne_enclave { … }; /** * enum ne_state - States available for an enclave. * @NE_STATE_INIT: The enclave has not been started yet. * @NE_STATE_RUNNING: The enclave was started and is running as expected. * @NE_STATE_STOPPED: The enclave exited without userspace interaction. */ enum ne_state { … }; /** * struct ne_devs - Data structure to keep refs to the NE misc and PCI devices. * @ne_misc_dev: Nitro Enclaves misc device. * @ne_pci_dev : Nitro Enclaves PCI device. */ struct ne_devs { … }; /* Nitro Enclaves (NE) data structure for keeping refs to the NE misc and PCI devices. */ extern struct ne_devs ne_devs; #endif /* _NE_MISC_DEV_H_ */
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