1 /* 2 * This file and its contents are supplied under the terms of the 3 * Common Development and Distribution License ("CDDL"), version 1.0. 4 * You may only use this file in accordance with the terms of version 5 * 1.0 of the CDDL. 6 * 7 * A full copy of the text of the CDDL should have accompanied this 8 * source. A copy of the CDDL is also available via the Internet at 9 * http://www.illumos.org/license/CDDL. 10 */ 11 /* This file is dual-licensed; see usr/src/contrib/bhyve/LICENSE */ 12 13 /* 14 * Copyright 2019 Joyent, Inc. 15 * Copyright 2021 Oxide Computer Company 16 */ 17 18 #ifndef _VMM_DRV_H_ 19 #define _VMM_DRV_H_ 20 21 #ifdef _KERNEL 22 23 #include <sys/file.h> 24 #include <sys/stdbool.h> 25 26 struct vmm_hold; 27 typedef struct vmm_hold vmm_hold_t; 28 29 struct vmm_lease; 30 typedef struct vmm_lease vmm_lease_t; 31 32 /* 33 * This is effectively a synonym for the bhyve-internal 'struct vm_page' type. 34 * Use of `vmm_page_t *` instead allows us to keep those implementation details 35 * hidden from vmm_drv consumers. 36 */ 37 struct vmm_page; 38 typedef struct vmm_page vmm_page_t; 39 40 /* 41 * Because of tangled headers, this definitions mirrors its ioport_handler_t 42 * counterpart in vmm_kernel.h. 43 */ 44 typedef int (*vmm_drv_iop_cb_t)(void *, bool, uint16_t, uint8_t, uint32_t *); 45 46 extern int vmm_drv_hold(file_t *, cred_t *, vmm_hold_t **); 47 extern void vmm_drv_rele(vmm_hold_t *); 48 extern boolean_t vmm_drv_release_reqd(vmm_hold_t *); 49 50 extern vmm_lease_t *vmm_drv_lease_sign(vmm_hold_t *, boolean_t (*)(void *), 51 void *); 52 extern void vmm_drv_lease_break(vmm_hold_t *, vmm_lease_t *); 53 extern boolean_t vmm_drv_lease_expired(vmm_lease_t *); 54 55 extern vmm_page_t *vmm_drv_page_hold(vmm_lease_t *, uintptr_t, int); 56 extern void vmm_drv_page_release(vmm_page_t *); 57 extern void vmm_drv_page_release_chain(vmm_page_t *); 58 extern const void *vmm_drv_page_readable(const vmm_page_t *); 59 extern void *vmm_drv_page_writable(const vmm_page_t *); 60 extern void vmm_drv_page_chain(vmm_page_t *, vmm_page_t *); 61 extern vmm_page_t *vmm_drv_page_next(const vmm_page_t *); 62 63 extern int vmm_drv_msi(vmm_lease_t *, uint64_t, uint64_t); 64 65 extern int vmm_drv_ioport_hook(vmm_hold_t *, uint16_t, vmm_drv_iop_cb_t, void *, 66 void **); 67 extern void vmm_drv_ioport_unhook(vmm_hold_t *, void **); 68 #endif /* _KERNEL */ 69 70 #endif /* _VMM_DRV_H_ */ 71