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      1 /*	$NetBSD: nvmm.h,v 1.19 2021/04/06 08:40:17 reinoud Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2018-2020 Maxime Villard, m00nbsd.net
      5  * All rights reserved.
      6  *
      7  * This code is part of the NVMM hypervisor.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     23  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     24  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     26  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     28  * SUCH DAMAGE.
     29  */
     30 
     31 #ifndef _LIBNVMM_H_
     32 #define _LIBNVMM_H_
     33 
     34 #include <stdint.h>
     35 #include <stdbool.h>
     36 
     37 #include <dev/nvmm/nvmm.h>
     38 #include <dev/nvmm/nvmm_ioctl.h>
     39 
     40 #define NVMM_USER_VERSION	2
     41 
     42 /*
     43  * Version 1 - Initial release in NetBSD 9.0.
     44  * Version 2 - Added nvmm_vcpu::stop.
     45  */
     46 
     47 struct nvmm_io;
     48 struct nvmm_mem;
     49 
     50 struct nvmm_assist_callbacks {
     51 	void (*io)(struct nvmm_io *);
     52 	void (*mem)(struct nvmm_mem *);
     53 };
     54 
     55 struct nvmm_machine {
     56 	nvmm_machid_t machid;
     57 	struct nvmm_comm_page **pages;
     58 	void *areas; /* opaque */
     59 };
     60 
     61 struct nvmm_vcpu {
     62 	nvmm_cpuid_t cpuid;
     63 	struct nvmm_assist_callbacks cbs;
     64 	struct nvmm_vcpu_state *state;
     65 	struct nvmm_vcpu_event *event;
     66 	struct nvmm_vcpu_exit *exit;
     67 	volatile int *stop;
     68 };
     69 
     70 struct nvmm_io {
     71 	struct nvmm_machine *mach;
     72 	struct nvmm_vcpu *vcpu;
     73 	uint16_t port;
     74 	bool in;
     75 	size_t size;
     76 	uint8_t *data;
     77 };
     78 
     79 struct nvmm_mem {
     80 	struct nvmm_machine *mach;
     81 	struct nvmm_vcpu *vcpu;
     82 	gpaddr_t gpa;
     83 	bool write;
     84 	size_t size;
     85 	uint8_t *data;
     86 };
     87 
     88 #define NVMM_VCPU_CONF_CALLBACKS	NVMM_VCPU_CONF_LIBNVMM_BEGIN
     89 
     90 #define NVMM_PROT_READ		0x01
     91 #define NVMM_PROT_WRITE		0x02
     92 #define NVMM_PROT_EXEC		0x04
     93 #define NVMM_PROT_USER		0x08
     94 #define NVMM_PROT_ALL		0x0F
     95 typedef uint64_t nvmm_prot_t;
     96 
     97 int nvmm_init(void);
     98 int nvmm_root_init(void);
     99 
    100 int nvmm_capability(struct nvmm_capability *);
    101 
    102 int nvmm_machine_create(struct nvmm_machine *);
    103 int nvmm_machine_destroy(struct nvmm_machine *);
    104 int nvmm_machine_configure(struct nvmm_machine *, uint64_t, void *);
    105 
    106 int nvmm_vcpu_create(struct nvmm_machine *, nvmm_cpuid_t, struct nvmm_vcpu *);
    107 int nvmm_vcpu_destroy(struct nvmm_machine *, struct nvmm_vcpu *);
    108 int nvmm_vcpu_configure(struct nvmm_machine *, struct nvmm_vcpu *, uint64_t,
    109     void *);
    110 int nvmm_vcpu_setstate(struct nvmm_machine *, struct nvmm_vcpu *, uint64_t);
    111 int nvmm_vcpu_getstate(struct nvmm_machine *, struct nvmm_vcpu *, uint64_t);
    112 int nvmm_vcpu_inject(struct nvmm_machine *, struct nvmm_vcpu *);
    113 int nvmm_vcpu_run(struct nvmm_machine *, struct nvmm_vcpu *);
    114 
    115 int nvmm_gpa_map(struct nvmm_machine *, uintptr_t, gpaddr_t, size_t, int);
    116 int nvmm_gpa_unmap(struct nvmm_machine *, uintptr_t, gpaddr_t, size_t);
    117 int nvmm_hva_map(struct nvmm_machine *, uintptr_t, size_t);
    118 int nvmm_hva_unmap(struct nvmm_machine *, uintptr_t, size_t);
    119 
    120 int nvmm_gva_to_gpa(struct nvmm_machine *, struct nvmm_vcpu *, gvaddr_t, gpaddr_t *,
    121     nvmm_prot_t *);
    122 int nvmm_gpa_to_hva(struct nvmm_machine *, gpaddr_t, uintptr_t *,
    123     nvmm_prot_t *);
    124 
    125 int nvmm_assist_io(struct nvmm_machine *, struct nvmm_vcpu *);
    126 int nvmm_assist_mem(struct nvmm_machine *, struct nvmm_vcpu *);
    127 
    128 int nvmm_ctl(int, void *, size_t);
    129 
    130 int nvmm_vcpu_dump(struct nvmm_machine *, struct nvmm_vcpu *);
    131 
    132 int nvmm_vcpu_stop(struct nvmm_vcpu *);
    133 
    134 #endif /* _LIBNVMM_H_ */
    135