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1/*2 * Copyright 2022 Advanced Micro Devices, Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * 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 OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 */23 24#include "amdgpu.h"25#include "amdgpu_lsdma.h"26 27#define AMDGPU_LSDMA_MAX_SIZE 0x2000000ULL28 29int amdgpu_lsdma_wait_for(struct amdgpu_device *adev,30 uint32_t reg_index, uint32_t reg_val,31 uint32_t mask)32{33 uint32_t val;34 int i;35 36 for (i = 0; i < adev->usec_timeout; i++) {37 val = RREG32(reg_index);38 if ((val & mask) == reg_val)39 return 0;40 udelay(1);41 }42 43 return -ETIME;44}45 46int amdgpu_lsdma_copy_mem(struct amdgpu_device *adev,47 uint64_t src_addr,48 uint64_t dst_addr,49 uint64_t mem_size)50{51 int ret;52 53 if (mem_size == 0)54 return -EINVAL;55 56 while (mem_size > 0) {57 uint64_t current_copy_size = min(mem_size, AMDGPU_LSDMA_MAX_SIZE);58 59 ret = adev->lsdma.funcs->copy_mem(adev, src_addr, dst_addr, current_copy_size);60 if (ret)61 return ret;62 src_addr += current_copy_size;63 dst_addr += current_copy_size;64 mem_size -= current_copy_size;65 }66 67 return 0;68}69 70int amdgpu_lsdma_fill_mem(struct amdgpu_device *adev,71 uint64_t dst_addr,72 uint32_t data,73 uint64_t mem_size)74{75 int ret;76 77 if (mem_size == 0)78 return -EINVAL;79 80 while (mem_size > 0) {81 uint64_t current_fill_size = min(mem_size, AMDGPU_LSDMA_MAX_SIZE);82 83 ret = adev->lsdma.funcs->fill_mem(adev, dst_addr, data, current_fill_size);84 if (ret)85 return ret;86 dst_addr += current_fill_size;87 mem_size -= current_fill_size;88 }89 90 return 0;91}92