/* * Copyright 2022 Advanced Micro Devices, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * */ #include "amdgpu.h"#include "amdgpu_lsdma.h" #define AMDGPU_LSDMA_MAX_SIZE	0x2000000ULL int amdgpu_lsdma_wait_for(struct amdgpu_device *adev,			  uint32_t reg_index, uint32_t reg_val,			  uint32_t mask){	uint32_t val;	int i; 	for (i = 0; i < adev->usec_timeout; i++) {		val = RREG32(reg_index);		if ((val & mask) == reg_val)			return 0;		udelay(1);	} 	return -ETIME;} int amdgpu_lsdma_copy_mem(struct amdgpu_device *adev,			  uint64_t src_addr,			  uint64_t dst_addr,			  uint64_t mem_size){	int ret; 	if (mem_size == 0)		return -EINVAL; 	while (mem_size > 0) {		uint64_t current_copy_size = min(mem_size, AMDGPU_LSDMA_MAX_SIZE); 		ret = adev->lsdma.funcs->copy_mem(adev, src_addr, dst_addr, current_copy_size);		if (ret)			return ret;		src_addr += current_copy_size;		dst_addr += current_copy_size;		mem_size -= current_copy_size;	} 	return 0;} int amdgpu_lsdma_fill_mem(struct amdgpu_device *adev,			  uint64_t dst_addr,			  uint32_t data,			  uint64_t mem_size){	int ret; 	if (mem_size == 0)		return -EINVAL; 	while (mem_size > 0) {		uint64_t current_fill_size = min(mem_size, AMDGPU_LSDMA_MAX_SIZE); 		ret = adev->lsdma.funcs->fill_mem(adev, dst_addr, data, current_fill_size);		if (ret)			return ret;		dst_addr += current_fill_size;		mem_size -= current_fill_size;	} 	return 0;}