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 struct amdgpu_device; 31 32 typedef uint32_t (*amdgpu_rreg_t)(struct amdgpu_device *, uint32_t); 33 typedef void (*amdgpu_wreg_t)(struct amdgpu_device *, uint32_t, uint32_t); 34 typedef uint32_t (*amdgpu_rreg_ext_t)(struct amdgpu_device *, uint64_t); 35 typedef void (*amdgpu_wreg_ext_t)(struct amdgpu_device *, uint64_t, uint32_t); 36 typedef uint64_t (*amdgpu_rreg64_t)(struct amdgpu_device *, uint32_t); 37 typedef void (*amdgpu_wreg64_t)(struct amdgpu_device *, uint32_t, uint64_t); 38 39 typedef uint32_t (*amdgpu_block_rreg_t)(struct amdgpu_device *, uint32_t, 40 uint32_t); 41 typedef void (*amdgpu_block_wreg_t)(struct amdgpu_device *, uint32_t, uint32_t, 42 uint32_t); 43 44 struct amdgpu_reg_ind { 45 spinlock_t lock; 46 amdgpu_rreg_t rreg; 47 amdgpu_wreg_t wreg; 48 }; 49 50 struct amdgpu_reg_ind_blk { 51 spinlock_t lock; 52 amdgpu_block_rreg_t rreg; 53 amdgpu_block_wreg_t wreg; 54 }; 55 56 struct amdgpu_reg_pcie_ind { 57 amdgpu_rreg_t rreg; 58 amdgpu_wreg_t wreg; 59 amdgpu_rreg_ext_t rreg_ext; 60 amdgpu_wreg_ext_t wreg_ext; 61 amdgpu_rreg64_t rreg64; 62 amdgpu_wreg64_t wreg64; 63 amdgpu_rreg_t port_rreg; 64 amdgpu_wreg_t port_wreg; 65 }; 66 67 struct amdgpu_reg_access { 68 struct amdgpu_reg_ind smc; 69 struct amdgpu_reg_ind uvd_ctx; 70 struct amdgpu_reg_ind didt; 71 struct amdgpu_reg_ind gc_cac; 72 struct amdgpu_reg_ind se_cac; 73 struct amdgpu_reg_ind_blk audio_endpt; 74 struct amdgpu_reg_pcie_ind pcie; 75 }; 76 77 void amdgpu_reg_access_init(struct amdgpu_device *adev); 78 uint32_t amdgpu_reg_smc_rd32(struct amdgpu_device *adev, uint32_t reg); 79 void amdgpu_reg_smc_wr32(struct amdgpu_device *adev, uint32_t reg, uint32_t v); 80 uint32_t amdgpu_reg_uvd_ctx_rd32(struct amdgpu_device *adev, uint32_t reg); 81 void amdgpu_reg_uvd_ctx_wr32(struct amdgpu_device *adev, uint32_t reg, uint32_t v); 82 uint32_t amdgpu_reg_didt_rd32(struct amdgpu_device *adev, uint32_t reg); 83 void amdgpu_reg_didt_wr32(struct amdgpu_device *adev, uint32_t reg, uint32_t v); 84 uint32_t amdgpu_reg_gc_cac_rd32(struct amdgpu_device *adev, uint32_t reg); 85 void amdgpu_reg_gc_cac_wr32(struct amdgpu_device *adev, uint32_t reg, 86 uint32_t v); 87 uint32_t amdgpu_reg_se_cac_rd32(struct amdgpu_device *adev, uint32_t reg); 88 void amdgpu_reg_se_cac_wr32(struct amdgpu_device *adev, uint32_t reg, 89 uint32_t v); 90 uint32_t amdgpu_reg_audio_endpt_rd32(struct amdgpu_device *adev, uint32_t block, 91 uint32_t reg); 92 void amdgpu_reg_audio_endpt_wr32(struct amdgpu_device *adev, uint32_t block, 93 uint32_t reg, uint32_t v); 94 uint32_t amdgpu_reg_pcie_rd32(struct amdgpu_device *adev, uint32_t reg); 95 void amdgpu_reg_pcie_wr32(struct amdgpu_device *adev, uint32_t reg, uint32_t v); 96 uint32_t amdgpu_reg_pcie_ext_rd32(struct amdgpu_device *adev, uint64_t reg); 97 void amdgpu_reg_pcie_ext_wr32(struct amdgpu_device *adev, uint64_t reg, 98 uint32_t v); 99 uint64_t amdgpu_reg_pcie_rd64(struct amdgpu_device *adev, uint32_t reg); 100 void amdgpu_reg_pcie_wr64(struct amdgpu_device *adev, uint32_t reg, uint64_t v); 101 uint32_t amdgpu_reg_pciep_rd32(struct amdgpu_device *adev, uint32_t reg); 102 void amdgpu_reg_pciep_wr32(struct amdgpu_device *adev, uint32_t reg, 103 uint32_t v); 104 105 typedef uint64_t (*amdgpu_rreg64_ext_t)(struct amdgpu_device *, uint64_t); 106 typedef void (*amdgpu_wreg64_ext_t)(struct amdgpu_device *, uint64_t, uint64_t); 107 108 uint32_t amdgpu_device_rreg(struct amdgpu_device *adev, uint32_t reg, 109 uint32_t acc_flags); 110 uint32_t amdgpu_device_xcc_rreg(struct amdgpu_device *adev, uint32_t reg, 111 uint32_t acc_flags, uint32_t xcc_id); 112 void amdgpu_device_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v, 113 uint32_t acc_flags); 114 void amdgpu_device_xcc_wreg(struct amdgpu_device *adev, uint32_t reg, 115 uint32_t v, uint32_t acc_flags, uint32_t xcc_id); 116 void amdgpu_mm_wreg_mmio_rlc(struct amdgpu_device *adev, uint32_t reg, 117 uint32_t v, uint32_t xcc_id); 118 void amdgpu_mm_wreg8(struct amdgpu_device *adev, uint32_t offset, 119 uint8_t value); 120 uint8_t amdgpu_mm_rreg8(struct amdgpu_device *adev, uint32_t offset); 121 122 u32 amdgpu_device_indirect_rreg(struct amdgpu_device *adev, u32 reg_addr); 123 u32 amdgpu_device_indirect_rreg_ext(struct amdgpu_device *adev, u64 reg_addr); 124 u64 amdgpu_device_indirect_rreg64(struct amdgpu_device *adev, u32 reg_addr); 125 u64 amdgpu_device_indirect_rreg64_ext(struct amdgpu_device *adev, u64 reg_addr); 126 void amdgpu_device_indirect_wreg(struct amdgpu_device *adev, u32 reg_addr, 127 u32 reg_data); 128 void amdgpu_device_indirect_wreg_ext(struct amdgpu_device *adev, u64 reg_addr, 129 u32 reg_data); 130 void amdgpu_device_indirect_wreg64(struct amdgpu_device *adev, u32 reg_addr, 131 u64 reg_data); 132 void amdgpu_device_indirect_wreg64_ext(struct amdgpu_device *adev, u64 reg_addr, 133 u64 reg_data); 134 135 u32 amdgpu_device_pcie_port_rreg(struct amdgpu_device *adev, u32 reg); 136 void amdgpu_device_pcie_port_wreg(struct amdgpu_device *adev, u32 reg, u32 v); 137 138 uint32_t amdgpu_device_wait_on_rreg(struct amdgpu_device *adev, uint32_t inst, 139 uint32_t reg_addr, char reg_name[], 140 uint32_t expected_value, uint32_t mask); 141 142 #endif /* __AMDGPU_REG_ACCESS_H__ */ 143