From b15624b39b9b19ba139776e2a917bcd4e361c01e Mon Sep 17 00:00:00 2001
From: Alex Waterman <alexw@nvidia.com>
Date: Wed, 15 Aug 2018 16:32:37 -0700
Subject: gpu: nvgpu: posix: move the posix dir to os

Since the posix code is supporting a particular OS this code
should belong under os/ not common/.

Change-Id: Idf5f75b8ab9d614c9dd43ea23dab8df3c346c0ef
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1800658
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
---
 drivers/gpu/nvgpu/os/posix/kmem.c | 134 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 134 insertions(+)
 create mode 100644 drivers/gpu/nvgpu/os/posix/kmem.c

(limited to 'drivers/gpu/nvgpu/os/posix/kmem.c')

diff --git a/drivers/gpu/nvgpu/os/posix/kmem.c b/drivers/gpu/nvgpu/os/posix/kmem.c
new file mode 100644
index 00000000..5fe0aeb2
--- /dev/null
+++ b/drivers/gpu/nvgpu/os/posix/kmem.c
@@ -0,0 +1,134 @@
+/*
+ * 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/bug.h>
+#include <nvgpu/kmem.h>
+#include <nvgpu/types.h>
+
+#include <nvgpu/posix/kmem.h>
+
+struct nvgpu_kmem_cache {
+	size_t alloc_size;
+};
+
+/*
+ * kmem cache emulation: basically just do a regular malloc(). This is slower
+ * but should not affect a user of kmem cache in the slightest bit.
+ */
+struct nvgpu_kmem_cache *nvgpu_kmem_cache_create(struct gk20a *g, size_t size)
+{
+	struct nvgpu_kmem_cache *cache =
+		malloc(sizeof(struct nvgpu_kmem_cache));
+
+	if (cache != NULL)
+		return NULL;
+
+	cache->alloc_size = size;
+
+	return cache;
+}
+
+void nvgpu_kmem_cache_destroy(struct nvgpu_kmem_cache *cache)
+{
+	free(cache);
+}
+
+void *nvgpu_kmem_cache_alloc(struct nvgpu_kmem_cache *cache)
+{
+	return malloc(cache->alloc_size);
+}
+
+void nvgpu_kmem_cache_free(struct nvgpu_kmem_cache *cache, void *ptr)
+{
+	free(ptr);
+}
+
+void *__nvgpu_kmalloc(struct gk20a *g, size_t size, void *ip)
+{
+	return malloc(size);
+}
+
+void *__nvgpu_kzalloc(struct gk20a *g, size_t size, void *ip)
+{
+	return calloc(1, size);
+}
+
+void *__nvgpu_kcalloc(struct gk20a *g, size_t n, size_t size, void *ip)
+{
+	/*
+	 * calloc() implicitly zeros mem. So calloc a single member size bytes
+	 * long.
+	 */
+	return calloc(n, size);
+}
+
+void __nvgpu_kfree(struct gk20a *g, void *addr)
+{
+	free(addr);
+}
+
+/*
+ * The concept of vmalloc() does not exist in userspace.
+ */
+void *__nvgpu_vmalloc(struct gk20a *g, unsigned long size, void *ip)
+{
+	return __nvgpu_kmalloc(g, size, ip);
+}
+
+void *__nvgpu_vzalloc(struct gk20a *g, unsigned long size, void *ip)
+{
+	return __nvgpu_kzalloc(g, size, ip);
+}
+
+void __nvgpu_vfree(struct gk20a *g, void *addr)
+{
+	__nvgpu_kfree(g, addr);
+}
+
+void *__nvgpu_big_alloc(struct gk20a *g, size_t size, bool clear)
+{
+	/*
+	 * Since in userspace vmalloc() == kmalloc() == malloc() we can just
+	 * reuse k[zm]alloc() for this.
+	 */
+	return clear ?
+		__nvgpu_kzalloc(g, size, _NVGPU_GET_IP_) :
+		__nvgpu_kmalloc(g, size, _NVGPU_GET_IP_);
+}
+
+void nvgpu_big_free(struct gk20a *g, void *p)
+{
+	__nvgpu_kfree(g, p);
+}
+
+int nvgpu_kmem_init(struct gk20a *g)
+{
+	/* Nothing to init at the moment. */
+	return 0;
+}
+
+void nvgpu_kmem_fini(struct gk20a *g, int flags)
+{
+
+}
-- 
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