1 files changed, 162 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/common/mm/nvgpu_allocator.c b/drivers/gpu/nvgpu/common/mm/nvgpu_allocator.c
new file mode 100644
index 00000000..7a4e7705
--- /dev/null
+++ b/drivers/gpu/nvgpu/common/mm/nvgpu_allocator.c
@@ -0,0 +1,162 @@
+/*
+ * gk20a allocator
+ *
+ * Copyright (c) 2011-2017, 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 <nvgpu/allocator.h>
+
+#include "gk20a/gk20a.h"
+#include "gk20a/mm_gk20a.h"
+
+u64 nvgpu_alloc_length(struct nvgpu_allocator *a)
+{
+        if (a->ops->length)
+                return a->ops->length(a);
+
+        return 0;
+}
+
+u64 nvgpu_alloc_base(struct nvgpu_allocator *a)
+{
+        if (a->ops->base)
+                return a->ops->base(a);
+
+        return 0;
+}
+
+u64 nvgpu_alloc_initialized(struct nvgpu_allocator *a)
+{
+        if (!a->ops || !a->ops->inited)
+                return 0;
+
+        return a->ops->inited(a);
+}
+
+u64 nvgpu_alloc_end(struct nvgpu_allocator *a)
+{
+        if (a->ops->end)
+                return a->ops->end(a);
+
+        return 0;
+}
+
+u64 nvgpu_alloc_space(struct nvgpu_allocator *a)
+{
+        if (a->ops->space)
+                return a->ops->space(a);
+
+        return 0;
+}
+
+u64 nvgpu_alloc(struct nvgpu_allocator *a, u64 len)
+{
+        return a->ops->alloc(a, len);
+}
+
+void nvgpu_free(struct nvgpu_allocator *a, u64 addr)
+{
+        a->ops->free(a, addr);
+}
+
+u64 nvgpu_alloc_fixed(struct nvgpu_allocator *a, u64 base, u64 len,
+                      u32 page_size)
+{
+        if (a->ops->alloc_fixed)
+                return a->ops->alloc_fixed(a, base, len, page_size);
+
+        return 0;
+}
+
+void nvgpu_free_fixed(struct nvgpu_allocator *a, u64 base, u64 len)
+{
+        /*
+         * If this operation is not defined for the allocator then just do
+         * nothing. The alternative would be to fall back on the regular
+         * free but that may be harmful in unexpected ways.
+         */
+        if (a->ops->free_fixed)
+                a->ops->free_fixed(a, base, len);
+}
+
+int nvgpu_alloc_reserve_carveout(struct nvgpu_allocator *a,
+                                 struct nvgpu_alloc_carveout *co)
+{
+        if (a->ops->reserve_carveout)
+                return a->ops->reserve_carveout(a, co);
+
+        return -ENODEV;
+}
+
+void nvgpu_alloc_release_carveout(struct nvgpu_allocator *a,
+                                  struct nvgpu_alloc_carveout *co)
+{
+        if (a->ops->release_carveout)
+                a->ops->release_carveout(a, co);
+}
+
+void nvgpu_alloc_destroy(struct nvgpu_allocator *a)
+{
+        a->ops->fini(a);
+        nvgpu_mutex_destroy(&a->lock);
+        memset(a, 0, sizeof(*a));
+}
+
+#ifdef __KERNEL__
+void nvgpu_alloc_print_stats(struct nvgpu_allocator *__a,
+                             struct seq_file *s, int lock)
+{
+        __a->ops->print_stats(__a, s, lock);
+}
+#endif
+
+/*
+ * Handle the common init stuff for a nvgpu_allocator.
+ */
+int __nvgpu_alloc_common_init(struct nvgpu_allocator *a, struct gk20a *g,
+                              const char *name, void *priv, bool dbg,
+                              const struct nvgpu_allocator_ops *ops)
+{
+        int err;
+
+        if (!ops)
+                return -EINVAL;
+
+        /*
+         * This is the bare minimum operations required for a sensible
+         * allocator.
+         */
+        if (!ops->alloc || !ops->free || !ops->fini)
+                return -EINVAL;
+
+        err = nvgpu_mutex_init(&a->lock);
+        if (err)
+                return err;
+
+        a->g = g;
+        a->ops = ops;
+        a->priv = priv;
+        a->debug = dbg;
+
+        strlcpy(a->name, name, sizeof(a->name));
+
+        return 0;
+}