1 | /* |
2 | * Copyright 2018 Advanced Micro Devices, Inc. |
3 | * |
4 | * Permission is hereby granted, free of charge, to any person obtaining a |
5 | * copy of this software and associated documentation files (the "Software"), |
6 | * to deal in the Software without restriction, including without limitation |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
8 | * and/or sell copies of the Software, and to permit persons to whom the |
9 | * Software is furnished to do so, subject to the following conditions: |
10 | * |
11 | * The above copyright notice and this permission notice shall be included in |
12 | * all copies or substantial portions of the Software. |
13 | * |
14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
17 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
18 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
20 | * OTHER DEALINGS IN THE SOFTWARE. |
21 | * |
22 | */ |
23 | #include "amdgpu.h" |
24 | #include "gfxhub_v1_1.h" |
25 | |
26 | #include "gc/gc_9_2_1_offset.h" |
27 | #include "gc/gc_9_2_1_sh_mask.h" |
28 | |
29 | #include "soc15_common.h" |
30 | |
31 | #define mmMC_VM_XGMI_LFB_CNTL_ALDE 0x0978 |
32 | #define mmMC_VM_XGMI_LFB_CNTL_ALDE_BASE_IDX 0 |
33 | #define mmMC_VM_XGMI_LFB_SIZE_ALDE 0x0979 |
34 | #define mmMC_VM_XGMI_LFB_SIZE_ALDE_BASE_IDX 0 |
35 | //MC_VM_XGMI_LFB_CNTL |
36 | #define MC_VM_XGMI_LFB_CNTL_ALDE__PF_LFB_REGION__SHIFT 0x0 |
37 | #define MC_VM_XGMI_LFB_CNTL_ALDE__PF_MAX_REGION__SHIFT 0x4 |
38 | #define MC_VM_XGMI_LFB_CNTL_ALDE__PF_LFB_REGION_MASK 0x0000000FL |
39 | #define MC_VM_XGMI_LFB_CNTL_ALDE__PF_MAX_REGION_MASK 0x000000F0L |
40 | //MC_VM_XGMI_LFB_SIZE |
41 | #define MC_VM_XGMI_LFB_SIZE_ALDE__PF_LFB_SIZE__SHIFT 0x0 |
42 | #define MC_VM_XGMI_LFB_SIZE_ALDE__PF_LFB_SIZE_MASK 0x0001FFFFL |
43 | |
44 | int gfxhub_v1_1_get_xgmi_info(struct amdgpu_device *adev) |
45 | { |
46 | u32 max_num_physical_nodes; |
47 | u32 max_physical_node_id; |
48 | u32 xgmi_lfb_cntl; |
49 | u32 max_region; |
50 | u64 seg_size; |
51 | |
52 | if (adev->asic_type == CHIP_ALDEBARAN) { |
53 | xgmi_lfb_cntl = RREG32_SOC15(GC, 0, mmMC_VM_XGMI_LFB_CNTL_ALDE); |
54 | seg_size = REG_GET_FIELD( |
55 | RREG32_SOC15(GC, 0, mmMC_VM_XGMI_LFB_SIZE_ALDE), |
56 | MC_VM_XGMI_LFB_SIZE, PF_LFB_SIZE) << 24; |
57 | max_region = |
58 | REG_GET_FIELD(xgmi_lfb_cntl, MC_VM_XGMI_LFB_CNTL_ALDE, PF_MAX_REGION); |
59 | } else { |
60 | xgmi_lfb_cntl = RREG32_SOC15(GC, 0, mmMC_VM_XGMI_LFB_CNTL); |
61 | seg_size = REG_GET_FIELD( |
62 | RREG32_SOC15(GC, 0, mmMC_VM_XGMI_LFB_SIZE), |
63 | MC_VM_XGMI_LFB_SIZE, PF_LFB_SIZE) << 24; |
64 | max_region = |
65 | REG_GET_FIELD(xgmi_lfb_cntl, MC_VM_XGMI_LFB_CNTL, PF_MAX_REGION); |
66 | } |
67 | |
68 | |
69 | |
70 | switch (adev->asic_type) { |
71 | case CHIP_VEGA20: |
72 | max_num_physical_nodes = 4; |
73 | max_physical_node_id = 3; |
74 | break; |
75 | case CHIP_ARCTURUS: |
76 | max_num_physical_nodes = 8; |
77 | max_physical_node_id = 7; |
78 | break; |
79 | case CHIP_ALDEBARAN: |
80 | max_num_physical_nodes = 16; |
81 | max_physical_node_id = 15; |
82 | break; |
83 | default: |
84 | return -EINVAL; |
85 | } |
86 | |
87 | /* PF_MAX_REGION=0 means xgmi is disabled */ |
88 | if (max_region || adev->gmc.xgmi.connected_to_cpu) { |
89 | adev->gmc.xgmi.num_physical_nodes = max_region + 1; |
90 | |
91 | if (adev->gmc.xgmi.num_physical_nodes > max_num_physical_nodes) |
92 | return -EINVAL; |
93 | |
94 | if (adev->asic_type == CHIP_ALDEBARAN) { |
95 | adev->gmc.xgmi.physical_node_id = |
96 | REG_GET_FIELD(xgmi_lfb_cntl, MC_VM_XGMI_LFB_CNTL_ALDE, |
97 | PF_LFB_REGION); |
98 | } else { |
99 | adev->gmc.xgmi.physical_node_id = |
100 | REG_GET_FIELD(xgmi_lfb_cntl, MC_VM_XGMI_LFB_CNTL, |
101 | PF_LFB_REGION); |
102 | } |
103 | |
104 | if (adev->gmc.xgmi.physical_node_id > max_physical_node_id) |
105 | return -EINVAL; |
106 | |
107 | adev->gmc.xgmi.node_segment_size = seg_size; |
108 | } |
109 | |
110 | return 0; |
111 | } |
112 | |