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nvmm_internal.h revision 1.9 
      1 /*	$NetBSD: nvmm_internal.h,v 1.9 2019/04/10 18:49:04 maxv Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2018 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Maxime Villard.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _NVMM_INTERNAL_H_
     33 #define _NVMM_INTERNAL_H_
     34 
     35 #define NVMM_MAX_MACHINES	128
     36 #define NVMM_MAX_VCPUS		256
     37 #define NVMM_MAX_HMAPPINGS	32
     38 #define NVMM_MAX_RAM		(128ULL * (1 << 30))
     39 
     40 struct nvmm_owner {
     41 	pid_t pid;
     42 };
     43 
     44 struct nvmm_cpu {
     45 	/* Shared. */
     46 	bool present;
     47 	nvmm_cpuid_t cpuid;
     48 	kmutex_t lock;
     49 
     50 	/* State buffer. */
     51 	void *state;
     52 
     53 	/* Last host CPU on which the VCPU ran. */
     54 	int hcpu_last;
     55 
     56 	/* Implementation-specific. */
     57 	void *cpudata;
     58 };
     59 
     60 struct nvmm_hmapping {
     61 	bool present;
     62 	uintptr_t hva;
     63 	size_t size;
     64 	struct uvm_object *uobj;
     65 };
     66 
     67 struct nvmm_machine {
     68 	bool present;
     69 	nvmm_machid_t machid;
     70 	time_t time;
     71 	struct nvmm_owner *owner;
     72 	krwlock_t lock;
     73 
     74 	/* Kernel */
     75 	struct vmspace *vm;
     76 	gpaddr_t gpa_begin;
     77 	gpaddr_t gpa_end;
     78 
     79 	/* Host Mappings */
     80 	struct nvmm_hmapping hmap[NVMM_MAX_HMAPPINGS];
     81 
     82 	/* CPU */
     83 	struct nvmm_cpu cpus[NVMM_MAX_VCPUS];
     84 
     85 	/* Implementation-specific */
     86 	void *machdata;
     87 };
     88 
     89 struct nvmm_impl {
     90 	bool (*ident)(void);
     91 	void (*init)(void);
     92 	void (*fini)(void);
     93 	void (*capability)(struct nvmm_capability *);
     94 
     95 	size_t conf_max;
     96 	const size_t *conf_sizes;
     97 	size_t state_size;
     98 
     99 	void (*machine_create)(struct nvmm_machine *);
    100 	void (*machine_destroy)(struct nvmm_machine *);
    101 	int (*machine_configure)(struct nvmm_machine *, uint64_t, void *);
    102 
    103 	int (*vcpu_create)(struct nvmm_machine *, struct nvmm_cpu *);
    104 	void (*vcpu_destroy)(struct nvmm_machine *, struct nvmm_cpu *);
    105 	void (*vcpu_setstate)(struct nvmm_cpu *, const void *, uint64_t);
    106 	void (*vcpu_getstate)(struct nvmm_cpu *, void *, uint64_t);
    107 	int (*vcpu_inject)(struct nvmm_machine *, struct nvmm_cpu *,
    108 	    struct nvmm_event *);
    109 	int (*vcpu_run)(struct nvmm_machine *, struct nvmm_cpu *,
    110 	    struct nvmm_exit *);
    111 };
    112 
    113 int nvmm_vcpu_get(struct nvmm_machine *, nvmm_cpuid_t, struct nvmm_cpu **);
    114 void nvmm_vcpu_put(struct nvmm_cpu *);
    115 
    116 extern const struct nvmm_impl nvmm_x86_svm;
    117 extern const struct nvmm_impl nvmm_x86_vmx;
    118 
    119 #endif /* _NVMM_INTERNAL_H_ */
    120