Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/* SPDX-License-Identifier: MIT */
2/*
3 * Copyright 2025 Advanced Micro Devices, Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 * OTHER DEALINGS IN THE SOFTWARE.
22 */
23
24#ifndef __AMDGPU_REG_ACCESS_H__
25#define __AMDGPU_REG_ACCESS_H__
26
27#include <linux/types.h>
28#include <linux/spinlock.h>
29
30#include "amdgpu_ip.h"
31
32struct amdgpu_device;
33
34typedef uint32_t (*amdgpu_rreg_t)(struct amdgpu_device *, uint32_t);
35typedef void (*amdgpu_wreg_t)(struct amdgpu_device *, uint32_t, uint32_t);
36typedef uint32_t (*amdgpu_rreg_ext_t)(struct amdgpu_device *, uint64_t);
37typedef void (*amdgpu_wreg_ext_t)(struct amdgpu_device *, uint64_t, uint32_t);
38typedef uint64_t (*amdgpu_rreg64_t)(struct amdgpu_device *, uint32_t);
39typedef void (*amdgpu_wreg64_t)(struct amdgpu_device *, uint32_t, uint64_t);
40typedef uint64_t (*amdgpu_rreg64_ext_t)(struct amdgpu_device *, uint64_t);
41typedef void (*amdgpu_wreg64_ext_t)(struct amdgpu_device *, uint64_t, uint64_t);
42
43typedef uint32_t (*amdgpu_block_rreg_t)(struct amdgpu_device *, uint32_t,
44 uint32_t);
45typedef void (*amdgpu_block_wreg_t)(struct amdgpu_device *, uint32_t, uint32_t,
46 uint32_t);
47typedef uint64_t (*amdgpu_reg_get_smn_base64_t)(struct amdgpu_device *adev,
48 enum amd_hw_ip_block_type block,
49 int die_inst);
50
51struct amdgpu_reg_ind {
52 spinlock_t lock;
53 amdgpu_rreg_t rreg;
54 amdgpu_wreg_t wreg;
55};
56
57struct amdgpu_reg_ind_blk {
58 spinlock_t lock;
59 amdgpu_block_rreg_t rreg;
60 amdgpu_block_wreg_t wreg;
61};
62
63struct amdgpu_reg_pcie_ind {
64 spinlock_t lock;
65 amdgpu_rreg_t rreg;
66 amdgpu_wreg_t wreg;
67 amdgpu_rreg_ext_t rreg_ext;
68 amdgpu_wreg_ext_t wreg_ext;
69 amdgpu_rreg64_t rreg64;
70 amdgpu_wreg64_t wreg64;
71 amdgpu_rreg64_ext_t rreg64_ext;
72 amdgpu_wreg64_ext_t wreg64_ext;
73 amdgpu_rreg_t port_rreg;
74 amdgpu_wreg_t port_wreg;
75};
76
77struct amdgpu_reg_smn_ext {
78 amdgpu_reg_get_smn_base64_t get_smn_base;
79};
80
81struct amdgpu_reg_access {
82 struct amdgpu_reg_ind smc;
83 struct amdgpu_reg_ind uvd_ctx;
84 struct amdgpu_reg_ind didt;
85 struct amdgpu_reg_ind gc_cac;
86 struct amdgpu_reg_ind se_cac;
87 struct amdgpu_reg_ind_blk audio_endpt;
88 struct amdgpu_reg_pcie_ind pcie;
89 struct amdgpu_reg_smn_ext smn;
90};
91
92void amdgpu_reg_access_init(struct amdgpu_device *adev);
93uint32_t amdgpu_reg_smc_rd32(struct amdgpu_device *adev, uint32_t reg);
94void amdgpu_reg_smc_wr32(struct amdgpu_device *adev, uint32_t reg, uint32_t v);
95uint32_t amdgpu_reg_uvd_ctx_rd32(struct amdgpu_device *adev, uint32_t reg);
96void amdgpu_reg_uvd_ctx_wr32(struct amdgpu_device *adev, uint32_t reg, uint32_t v);
97uint32_t amdgpu_reg_didt_rd32(struct amdgpu_device *adev, uint32_t reg);
98void amdgpu_reg_didt_wr32(struct amdgpu_device *adev, uint32_t reg, uint32_t v);
99uint32_t amdgpu_reg_gc_cac_rd32(struct amdgpu_device *adev, uint32_t reg);
100void amdgpu_reg_gc_cac_wr32(struct amdgpu_device *adev, uint32_t reg,
101 uint32_t v);
102uint32_t amdgpu_reg_se_cac_rd32(struct amdgpu_device *adev, uint32_t reg);
103void amdgpu_reg_se_cac_wr32(struct amdgpu_device *adev, uint32_t reg,
104 uint32_t v);
105uint32_t amdgpu_reg_audio_endpt_rd32(struct amdgpu_device *adev, uint32_t block,
106 uint32_t reg);
107void amdgpu_reg_audio_endpt_wr32(struct amdgpu_device *adev, uint32_t block,
108 uint32_t reg, uint32_t v);
109uint32_t amdgpu_reg_pcie_rd32(struct amdgpu_device *adev, uint32_t reg);
110void amdgpu_reg_pcie_wr32(struct amdgpu_device *adev, uint32_t reg, uint32_t v);
111uint32_t amdgpu_reg_pcie_ext_rd32(struct amdgpu_device *adev, uint64_t reg);
112void amdgpu_reg_pcie_ext_wr32(struct amdgpu_device *adev, uint64_t reg,
113 uint32_t v);
114uint64_t amdgpu_reg_pcie_rd64(struct amdgpu_device *adev, uint32_t reg);
115void amdgpu_reg_pcie_wr64(struct amdgpu_device *adev, uint32_t reg, uint64_t v);
116uint64_t amdgpu_reg_pcie_ext_rd64(struct amdgpu_device *adev, uint64_t reg);
117void amdgpu_reg_pcie_ext_wr64(struct amdgpu_device *adev, uint64_t reg,
118 uint64_t v);
119uint32_t amdgpu_reg_pciep_rd32(struct amdgpu_device *adev, uint32_t reg);
120void amdgpu_reg_pciep_wr32(struct amdgpu_device *adev, uint32_t reg,
121 uint32_t v);
122uint64_t amdgpu_reg_get_smn_base64(struct amdgpu_device *adev,
123 enum amd_hw_ip_block_type block,
124 int die_inst);
125uint64_t amdgpu_reg_smn_v1_0_get_base(struct amdgpu_device *adev,
126 enum amd_hw_ip_block_type block,
127 int die_inst);
128
129uint32_t amdgpu_device_rreg(struct amdgpu_device *adev, uint32_t reg,
130 uint32_t acc_flags);
131uint32_t amdgpu_device_xcc_rreg(struct amdgpu_device *adev, uint32_t reg,
132 uint32_t acc_flags, uint32_t xcc_id);
133void amdgpu_device_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v,
134 uint32_t acc_flags);
135void amdgpu_device_xcc_wreg(struct amdgpu_device *adev, uint32_t reg,
136 uint32_t v, uint32_t acc_flags, uint32_t xcc_id);
137void amdgpu_mm_wreg_mmio_rlc(struct amdgpu_device *adev, uint32_t reg,
138 uint32_t v, uint32_t xcc_id);
139void amdgpu_mm_wreg8(struct amdgpu_device *adev, uint32_t offset,
140 uint8_t value);
141uint8_t amdgpu_mm_rreg8(struct amdgpu_device *adev, uint32_t offset);
142
143u32 amdgpu_device_indirect_rreg(struct amdgpu_device *adev, u32 reg_addr);
144u32 amdgpu_device_indirect_rreg_ext(struct amdgpu_device *adev, u64 reg_addr);
145u64 amdgpu_device_indirect_rreg64(struct amdgpu_device *adev, u32 reg_addr);
146u64 amdgpu_device_indirect_rreg64_ext(struct amdgpu_device *adev, u64 reg_addr);
147void amdgpu_device_indirect_wreg(struct amdgpu_device *adev, u32 reg_addr,
148 u32 reg_data);
149void amdgpu_device_indirect_wreg_ext(struct amdgpu_device *adev, u64 reg_addr,
150 u32 reg_data);
151void amdgpu_device_indirect_wreg64(struct amdgpu_device *adev, u32 reg_addr,
152 u64 reg_data);
153void amdgpu_device_indirect_wreg64_ext(struct amdgpu_device *adev, u64 reg_addr,
154 u64 reg_data);
155
156u32 amdgpu_device_pcie_port_rreg(struct amdgpu_device *adev, u32 reg);
157void amdgpu_device_pcie_port_wreg(struct amdgpu_device *adev, u32 reg, u32 v);
158
159uint32_t amdgpu_device_wait_on_rreg(struct amdgpu_device *adev, uint32_t inst,
160 uint32_t reg_addr, char reg_name[],
161 uint32_t expected_value, uint32_t mask);
162
163#endif /* __AMDGPU_REG_ACCESS_H__ */