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Annotation of src/sys/dev/nvmm/nvmm_internal.h, Revision 1.17

1.17    ! maxv        1: /*     $NetBSD: nvmm_internal.h,v 1.16 2020/07/03 16:09:54 maxv Exp $  */
1.1       maxv        2:
                      3: /*
1.16      maxv        4:  * Copyright (c) 2018-2020 The NetBSD Foundation, Inc.
1.1       maxv        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
1.7       maxv       37: #define NVMM_MAX_HMAPPINGS     32
1.4       maxv       38: #define NVMM_MAX_RAM           (128ULL * (1 << 30))
1.1       maxv       39:
1.8       maxv       40: struct nvmm_owner {
                     41:        pid_t pid;
                     42: };
                     43:
1.1       maxv       44: struct nvmm_cpu {
                     45:        /* Shared. */
                     46:        bool present;
                     47:        nvmm_cpuid_t cpuid;
                     48:        kmutex_t lock;
                     49:
1.10      maxv       50:        /* Comm page. */
                     51:        struct nvmm_comm_page *comm;
1.3       maxv       52:
1.1       maxv       53:        /* Last host CPU on which the VCPU ran. */
                     54:        int hcpu_last;
                     55:
                     56:        /* Implementation-specific. */
                     57:        void *cpudata;
                     58: };
                     59:
1.7       maxv       60: struct nvmm_hmapping {
1.2       maxv       61:        bool present;
                     62:        uintptr_t hva;
                     63:        size_t size;
                     64:        struct uvm_object *uobj;
                     65: };
                     66:
1.1       maxv       67: struct nvmm_machine {
                     68:        bool present;
                     69:        nvmm_machid_t machid;
1.9       maxv       70:        time_t time;
1.8       maxv       71:        struct nvmm_owner *owner;
1.1       maxv       72:        krwlock_t lock;
                     73:
1.10      maxv       74:        /* Comm */
                     75:        struct uvm_object *commuobj;
                     76:
1.1       maxv       77:        /* Kernel */
                     78:        struct vmspace *vm;
                     79:        gpaddr_t gpa_begin;
                     80:        gpaddr_t gpa_end;
                     81:
1.7       maxv       82:        /* Host Mappings */
                     83:        struct nvmm_hmapping hmap[NVMM_MAX_HMAPPINGS];
1.2       maxv       84:
1.1       maxv       85:        /* CPU */
1.14      maxv       86:        volatile unsigned int ncpus;
1.1       maxv       87:        struct nvmm_cpu cpus[NVMM_MAX_VCPUS];
                     88:
                     89:        /* Implementation-specific */
                     90:        void *machdata;
                     91: };
                     92:
                     93: struct nvmm_impl {
1.16      maxv       94:        const char *name;
1.1       maxv       95:        bool (*ident)(void);
                     96:        void (*init)(void);
                     97:        void (*fini)(void);
                     98:        void (*capability)(struct nvmm_capability *);
                     99:
1.13      maxv      100:        size_t mach_conf_max;
                    101:        const size_t *mach_conf_sizes;
                    102:
                    103:        size_t vcpu_conf_max;
                    104:        const size_t *vcpu_conf_sizes;
                    105:
1.1       maxv      106:        size_t state_size;
                    107:
                    108:        void (*machine_create)(struct nvmm_machine *);
                    109:        void (*machine_destroy)(struct nvmm_machine *);
                    110:        int (*machine_configure)(struct nvmm_machine *, uint64_t, void *);
                    111:
                    112:        int (*vcpu_create)(struct nvmm_machine *, struct nvmm_cpu *);
                    113:        void (*vcpu_destroy)(struct nvmm_machine *, struct nvmm_cpu *);
1.13      maxv      114:        int (*vcpu_configure)(struct nvmm_cpu *, uint64_t, void *);
1.10      maxv      115:        void (*vcpu_setstate)(struct nvmm_cpu *);
                    116:        void (*vcpu_getstate)(struct nvmm_cpu *);
1.11      maxv      117:        int (*vcpu_inject)(struct nvmm_cpu *);
1.1       maxv      118:        int (*vcpu_run)(struct nvmm_machine *, struct nvmm_cpu *,
1.13      maxv      119:            struct nvmm_vcpu_exit *);
1.1       maxv      120: };
                    121:
1.17    ! maxv      122: #if defined(__x86_64__)
1.1       maxv      123: extern const struct nvmm_impl nvmm_x86_svm;
1.5       maxv      124: extern const struct nvmm_impl nvmm_x86_vmx;
1.17    ! maxv      125: #endif
1.1       maxv      126:
1.15      maxv      127: static inline bool
                    128: nvmm_return_needed(void)
                    129: {
                    130:        if (preempt_needed()) {
                    131:                return true;
                    132:        }
                    133:        if (curlwp->l_flag & LW_USERRET) {
                    134:                return true;
                    135:        }
                    136:        return false;
                    137: }
                    138:
1.1       maxv      139: #endif /* _NVMM_INTERNAL_H_ */