1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2020 Beckhoff Automation GmbH & Co. KG 5 * Author: Corvin Köhne <c.koehne@beckhoff.com> 6 */ 7 8 #pragma once 9 10 #include <sys/linker_set.h> 11 12 #include <vmmapi.h> 13 14 #include "config.h" 15 #include "pci_emul.h" 16 17 struct passthru_mmio_mapping { 18 vm_paddr_t gpa; /* guest physical address */ 19 void *gva; /* guest virtual address */ 20 vm_paddr_t hpa; /* host physical address */ 21 void *hva; /* guest virtual address */ 22 vm_paddr_t len; 23 }; 24 25 struct passthru_softc; 26 27 struct passthru_dev { 28 int (*probe)(struct pci_devinst *pi); 29 int (*init)(struct pci_devinst *pi, nvlist_t *nvl); 30 void (*deinit)(struct pci_devinst *pi); 31 }; 32 #define PASSTHRU_DEV_SET(x) DATA_SET(passthru_dev_set, x) 33 34 typedef int (*cfgread_handler)(struct passthru_softc *sc, 35 struct pci_devinst *pi, int coff, int bytes, uint32_t *rv); 36 typedef int (*cfgwrite_handler)(struct passthru_softc *sc, 37 struct pci_devinst *pi, int coff, int bytes, uint32_t val); 38 typedef uint64_t (*passthru_read_handler)(struct pci_devinst *pi, int baridx, 39 uint64_t offset, int size); 40 typedef void (*passthru_write_handler)(struct pci_devinst *pi, int baridx, uint64_t offset, 41 int size, uint64_t val); 42 43 uint32_t pci_host_read_config(const struct pcisel *sel, long reg, int width); 44 void pci_host_write_config(const struct pcisel *sel, long reg, int width, 45 uint32_t data); 46 47 int passthru_cfgread_emulate(struct passthru_softc *sc, struct pci_devinst *pi, 48 int coff, int bytes, uint32_t *rv); 49 int passthru_cfgwrite_emulate(struct passthru_softc *sc, struct pci_devinst *pi, 50 int coff, int bytes, uint32_t val); 51 struct passthru_mmio_mapping *passthru_get_mmio(struct passthru_softc *sc, 52 int num); 53 struct pcisel *passthru_get_sel(struct passthru_softc *sc); 54 int set_pcir_handler(struct passthru_softc *sc, int reg, int len, 55 cfgread_handler rhandler, cfgwrite_handler whandler); 56 int passthru_set_bar_handler(struct passthru_softc *sc, int baridx, 57 uint64_t off, uint64_t size, passthru_read_handler rhandler, 58 passthru_write_handler whandler); 59