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