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19c80f89be
Rule 2.2 doesn't allow unused variable assignments. The reason is presence of unused variable assignments may indicate error in program's logic. Rule 21.x doesn't allow reserved identifier or macro names starting with '_' to be reused or defined. Jira NVGPU-3864 Change-Id: I8ee31c0ee522cd4de00b317b0b4463868ac958ef Signed-off-by: Vedashree Vidwans <vvidwans@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/2163723 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
61 lines
1.9 KiB
C
61 lines
1.9 KiB
C
/*
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* Copyright (c) 2019, NVIDIA CORPORATION. All rights reserved.
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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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <nvgpu/bug.h>
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#include <nvgpu/vidmem.h>
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#include <nvgpu/nvgpu_mem.h>
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#include <nvgpu/nvgpu_sgt.h>
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#include <nvgpu/page_allocator.h>
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#include <nvgpu/posix/posix_vidmem.h>
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bool nvgpu_addr_is_vidmem_page_alloc(u64 addr)
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{
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return ((addr & 1ULL) != 0ULL);
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}
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void nvgpu_vidmem_set_page_alloc(struct nvgpu_mem_sgl *sgl, u64 addr)
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{
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/* set bit 0 to indicate vidmem allocation */
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sgl->dma = (addr | 1ULL);
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sgl->phys = (addr | 1ULL);
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}
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struct nvgpu_page_alloc *nvgpu_vidmem_get_page_alloc(struct nvgpu_mem_sgl *sgl)
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{
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u64 addr;
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addr = sgl->dma;
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if (nvgpu_addr_is_vidmem_page_alloc(addr))
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addr = addr & ~1ULL;
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else
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WARN_ON(true);
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return (struct nvgpu_page_alloc *)(uintptr_t)addr;
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}
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void nvgpu_mem_free_vidmem_alloc(struct gk20a *g, struct nvgpu_mem *vidmem)
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{
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BUG();
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}
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