1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2020 Beckhoff Automation GmbH & Co. KG
5 * Author: Corvin K��hne <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
17struct 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
25struct passthru_softc;
26
27struct 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
34typedef int (*cfgread_handler)(struct passthru_softc *sc,
35    struct pci_devinst *pi, int coff, int bytes, uint32_t *rv);
36typedef int (*cfgwrite_handler)(struct passthru_softc *sc,
37    struct pci_devinst *pi, int coff, int bytes, uint32_t val);
38
39uint32_t pci_host_read_config(const struct pcisel *sel, long reg, int width);
40void pci_host_write_config(const struct pcisel *sel, long reg, int width,
41    uint32_t data);
42
43int passthru_cfgread_emulate(struct passthru_softc *sc, struct pci_devinst *pi,
44    int coff, int bytes, uint32_t *rv);
45int passthru_cfgwrite_emulate(struct passthru_softc *sc, struct pci_devinst *pi,
46    int coff, int bytes, uint32_t val);
47struct passthru_mmio_mapping *passthru_get_mmio(struct passthru_softc *sc,
48    int num);
49struct pcisel *passthru_get_sel(struct passthru_softc *sc);
50int set_pcir_handler(struct passthru_softc *sc, int reg, int len,
51    cfgread_handler rhandler, cfgwrite_handler whandler);
52