1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2025 Beckhoff Automation GmbH & Co. KG
5 * Author: Corvin Köhne <c.koehne@beckhoff.com>
6 */
7
8 #include <dev/pci/pcireg.h>
9
10 #include <errno.h>
11
12 #include "pci_passthru.h"
13
14 #define PCI_VENDOR_NVIDIA 0x10DE
15
16 static int
nvidia_gpu_probe(struct pci_devinst * const pi)17 nvidia_gpu_probe(struct pci_devinst *const pi)
18 {
19 struct passthru_softc *sc;
20 uint16_t vendor;
21 uint8_t class;
22
23 sc = pi->pi_arg;
24
25 vendor = pci_host_read_config(passthru_get_sel(sc), PCIR_VENDOR, 0x02);
26 if (vendor != PCI_VENDOR_NVIDIA)
27 return (ENXIO);
28
29 class = pci_host_read_config(passthru_get_sel(sc), PCIR_CLASS, 0x01);
30 if (class != PCIC_DISPLAY)
31 return (ENXIO);
32
33 return (0);
34 }
35
36 static int
nvidia_gpu_init(struct pci_devinst * const pi,nvlist_t * const nvl __unused)37 nvidia_gpu_init(struct pci_devinst *const pi, nvlist_t *const nvl __unused)
38 {
39 pci_set_cfgdata8(pi, PCIR_INTPIN, 1);
40
41 return (0);
42 }
43
44 static struct passthru_dev nvidia_gpu = {
45 .probe = nvidia_gpu_probe,
46 .init = nvidia_gpu_init,
47 };
48 PASSTHRU_DEV_SET(nvidia_gpu);
49