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/*
* 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;
}
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