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 29 struct amdgpu_device; 30 31 /* 32 * Registers read & write functions. 33 */ 34 typedef uint32_t (*amdgpu_rreg_t)(struct amdgpu_device *, uint32_t); 35 typedef void (*amdgpu_wreg_t)(struct amdgpu_device *, uint32_t, uint32_t); 36 37 typedef uint32_t (*amdgpu_rreg_ext_t)(struct amdgpu_device *, uint64_t); 38 typedef void (*amdgpu_wreg_ext_t)(struct amdgpu_device *, uint64_t, uint32_t); 39 40 typedef uint64_t (*amdgpu_rreg64_t)(struct amdgpu_device *, uint32_t); 41 typedef void (*amdgpu_wreg64_t)(struct amdgpu_device *, uint32_t, uint64_t); 42 43 typedef uint64_t (*amdgpu_rreg64_ext_t)(struct amdgpu_device *, uint64_t); 44 typedef void (*amdgpu_wreg64_ext_t)(struct amdgpu_device *, uint64_t, uint64_t); 45 46 typedef uint32_t (*amdgpu_block_rreg_t)(struct amdgpu_device *, uint32_t, 47 uint32_t); 48 typedef void (*amdgpu_block_wreg_t)(struct amdgpu_device *, uint32_t, uint32_t, 49 uint32_t); 50 51 uint32_t amdgpu_device_rreg(struct amdgpu_device *adev, uint32_t reg, 52 uint32_t acc_flags); 53 uint32_t amdgpu_device_xcc_rreg(struct amdgpu_device *adev, uint32_t reg, 54 uint32_t acc_flags, uint32_t xcc_id); 55 void amdgpu_device_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v, 56 uint32_t acc_flags); 57 void amdgpu_device_xcc_wreg(struct amdgpu_device *adev, uint32_t reg, 58 uint32_t v, uint32_t acc_flags, uint32_t xcc_id); 59 void amdgpu_mm_wreg_mmio_rlc(struct amdgpu_device *adev, uint32_t reg, 60 uint32_t v, uint32_t xcc_id); 61 void amdgpu_mm_wreg8(struct amdgpu_device *adev, uint32_t offset, 62 uint8_t value); 63 uint8_t amdgpu_mm_rreg8(struct amdgpu_device *adev, uint32_t offset); 64 65 u32 amdgpu_device_indirect_rreg(struct amdgpu_device *adev, u32 reg_addr); 66 u32 amdgpu_device_indirect_rreg_ext(struct amdgpu_device *adev, u64 reg_addr); 67 u64 amdgpu_device_indirect_rreg64(struct amdgpu_device *adev, u32 reg_addr); 68 u64 amdgpu_device_indirect_rreg64_ext(struct amdgpu_device *adev, u64 reg_addr); 69 void amdgpu_device_indirect_wreg(struct amdgpu_device *adev, u32 reg_addr, 70 u32 reg_data); 71 void amdgpu_device_indirect_wreg_ext(struct amdgpu_device *adev, u64 reg_addr, 72 u32 reg_data); 73 void amdgpu_device_indirect_wreg64(struct amdgpu_device *adev, u32 reg_addr, 74 u64 reg_data); 75 void amdgpu_device_indirect_wreg64_ext(struct amdgpu_device *adev, u64 reg_addr, 76 u64 reg_data); 77 78 u32 amdgpu_device_pcie_port_rreg(struct amdgpu_device *adev, u32 reg); 79 void amdgpu_device_pcie_port_wreg(struct amdgpu_device *adev, u32 reg, u32 v); 80 81 uint32_t amdgpu_device_wait_on_rreg(struct amdgpu_device *adev, uint32_t inst, 82 uint32_t reg_addr, char reg_name[], 83 uint32_t expected_value, uint32_t mask); 84 85 #endif /* __AMDGPU_REG_ACCESS_H__ */ 86