1/*	$NetBSD: amd_pcie.h,v 1.2 2021/12/18 23:45:08 riastradh Exp $	*/
2
3/*
4 * Copyright 2015 Advanced Micro Devices, 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
25#ifndef __AMD_PCIE_H__
26#define __AMD_PCIE_H__
27
28/* Following flags shows PCIe link speed supported in driver which are decided by chipset and ASIC */
29#define CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1        0x00010000
30#define CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2        0x00020000
31#define CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3        0x00040000
32#define CAIL_PCIE_LINK_SPEED_SUPPORT_GEN4        0x00080000
33#define CAIL_PCIE_LINK_SPEED_SUPPORT_MASK        0xFFFF0000
34#define CAIL_PCIE_LINK_SPEED_SUPPORT_SHIFT       16
35
36/* Following flags shows PCIe link speed supported by ASIC H/W.*/
37#define CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1   0x00000001
38#define CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN2   0x00000002
39#define CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN3   0x00000004
40#define CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN4   0x00000008
41#define CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_MASK   0x0000FFFF
42#define CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_SHIFT  0
43
44/* gen: chipset 1/2, asic 1/2/3 */
45#define AMDGPU_DEFAULT_PCIE_GEN_MASK (CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1 \
46				      | CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2 \
47				      | CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1 \
48				      | CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN2 \
49				      | CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN3)
50
51/* Following flags shows PCIe lane width switch supported in driver which are decided by chipset and ASIC */
52#define CAIL_PCIE_LINK_WIDTH_SUPPORT_X1          0x00010000
53#define CAIL_PCIE_LINK_WIDTH_SUPPORT_X2          0x00020000
54#define CAIL_PCIE_LINK_WIDTH_SUPPORT_X4          0x00040000
55#define CAIL_PCIE_LINK_WIDTH_SUPPORT_X8          0x00080000
56#define CAIL_PCIE_LINK_WIDTH_SUPPORT_X12         0x00100000
57#define CAIL_PCIE_LINK_WIDTH_SUPPORT_X16         0x00200000
58#define CAIL_PCIE_LINK_WIDTH_SUPPORT_X32         0x00400000
59#define CAIL_PCIE_LINK_WIDTH_SUPPORT_SHIFT       16
60
61/* 1/2/4/8/16 lanes */
62#define AMDGPU_DEFAULT_PCIE_MLW_MASK (CAIL_PCIE_LINK_WIDTH_SUPPORT_X1 \
63				      | CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 \
64				      | CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 \
65				      | CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 \
66				      | CAIL_PCIE_LINK_WIDTH_SUPPORT_X16)
67
68#endif
69