1/*	$NetBSD: nouveau_nvkm_subdev_bios_pcir.c,v 1.3 2021/12/18 23:45:38 riastradh Exp $	*/
2
3/*
4 * Copyright 2014 Red Hat Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Ben Skeggs <bskeggs@redhat.com>
25 */
26#include <sys/cdefs.h>
27__KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_bios_pcir.c,v 1.3 2021/12/18 23:45:38 riastradh Exp $");
28
29#include <subdev/bios.h>
30#include <subdev/bios/pcir.h>
31
32u32
33nvbios_pcirTe(struct nvkm_bios *bios, u32 base, u8 *ver, u16 *hdr)
34{
35	u32 data = nvbios_rd16(bios, base + 0x18);
36	if (data) {
37		data += base;
38		switch (nvbios_rd32(bios, data + 0x00)) {
39		case 0x52494350: /* PCIR */
40		case 0x53494752: /* RGIS */
41		case 0x5344504e: /* NPDS */
42			*hdr = nvbios_rd16(bios, data + 0x0a);
43			*ver = nvbios_rd08(bios, data + 0x0c);
44			break;
45		default:
46			nvkm_debug(&bios->subdev,
47				   "%08x: PCIR signature (%08x) unknown\n",
48				   data, nvbios_rd32(bios, data + 0x00));
49			data = 0;
50			break;
51		}
52	}
53	return data;
54}
55
56u32
57nvbios_pcirTp(struct nvkm_bios *bios, u32 base, u8 *ver, u16 *hdr,
58	      struct nvbios_pcirT *info)
59{
60	u32 data = nvbios_pcirTe(bios, base, ver, hdr);
61	memset(info, 0x00, sizeof(*info));
62	if (data) {
63		info->vendor_id = nvbios_rd16(bios, data + 0x04);
64		info->device_id = nvbios_rd16(bios, data + 0x06);
65		info->class_code[0] = nvbios_rd08(bios, data + 0x0d);
66		info->class_code[1] = nvbios_rd08(bios, data + 0x0e);
67		info->class_code[2] = nvbios_rd08(bios, data + 0x0f);
68		info->image_size = nvbios_rd16(bios, data + 0x10) * 512;
69		info->image_rev = nvbios_rd16(bios, data + 0x12);
70		info->image_type = nvbios_rd08(bios, data + 0x14);
71		info->last = nvbios_rd08(bios, data + 0x15) & 0x80;
72	}
73	return data;
74}
75