From 01e6fac4d61fdd7fff5433942ec93fc2ea1e4df1 Mon Sep 17 00:00:00 2001
From: Joshua Bakita <bakitajoshua@gmail.com>
Date: Wed, 28 Jun 2023 18:24:25 -0400
Subject: Include nvgpu headers

These are needed to build on NVIDIA's Jetson boards for the time
being. Only a couple structs are required, so it should be fairly
easy to remove this dependency at some point in the future.
---
 include/os/posix/posix-dma.c | 88 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 include/os/posix/posix-dma.c

(limited to 'include/os/posix/posix-dma.c')

diff --git a/include/os/posix/posix-dma.c b/include/os/posix/posix-dma.c
new file mode 100644
index 0000000..e8c5c9d
--- /dev/null
+++ b/include/os/posix/posix-dma.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * 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 AUTHORS OR COPYRIGHT HOLDERS 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 <stdlib.h>
+
+#include <nvgpu/mm.h>
+#include <nvgpu/vm.h>
+#include <nvgpu/bug.h>
+#include <nvgpu/dma.h>
+#include <nvgpu/gmmu.h>
+#include <nvgpu/nvgpu_mem.h>
+#include <nvgpu/enabled.h>
+
+/*
+ * In userspace vidmem vs sysmem is just a difference in what is placed in the
+ * aperture field.
+ */
+static int __nvgpu_do_dma_alloc(struct gk20a *g, unsigned long flags,
+				size_t size, struct nvgpu_mem *mem,
+				enum nvgpu_aperture ap)
+{
+	void *memory = malloc(mem->aligned_size);
+
+	if (memory == NULL)
+		return -ENOMEM;
+
+	mem->cpu_va       = memory;
+	mem->aperture     = ap;
+	mem->size         = size;
+	mem->aligned_size = PAGE_ALIGN(size);
+	mem->gpu_va       = 0ULL;
+	mem->skip_wmb     = true;
+	mem->vidmem_alloc = NULL;
+	mem->allocator    = NULL;
+
+	return 0;
+}
+
+bool nvgpu_iommuable(struct gk20a *g)
+{
+	return false;
+}
+
+int nvgpu_dma_alloc_flags_sys(struct gk20a *g, unsigned long flags,
+			      size_t size, struct nvgpu_mem *mem)
+{
+	return __nvgpu_do_dma_alloc(g, flags, size, mem, APERTURE_SYSMEM);
+}
+
+int nvgpu_dma_alloc_flags_vid_at(struct gk20a *g, unsigned long flags,
+				 size_t size, struct nvgpu_mem *mem, u64 at)
+{
+	BUG();
+
+	return 0;
+}
+
+void nvgpu_dma_free_sys(struct gk20a *g, struct nvgpu_mem *mem)
+{
+	if (!(mem->mem_flags & NVGPU_MEM_FLAG_SHADOW_COPY))
+		free(mem->cpu_va);
+
+	memset(mem, 0, sizeof(*mem));
+}
+
+void nvgpu_dma_free_vid(struct gk20a *g, struct nvgpu_mem *mem)
+{
+	BUG();
+}
-- 
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