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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.c | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.c')
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.c new file mode 100644 index 0000000000..4d1d4994ea --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.c @@ -0,0 +1,91 @@ +/* + * 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; +} |