Open source GPL/LGPL release

drivers/gpu/nvgpu/common/sec2/sec2_allocator.c

@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2018-2021, 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/sec2/allocator.h>
+#include <nvgpu/allocator.h>
+#include <nvgpu/sec2/msg.h>
+
+int nvgpu_sec2_dmem_allocator_init(struct gk20a *g,
+				struct nvgpu_allocator *dmem,
+				struct sec2_init_msg_sec2_init *sec2_init)
+{
+	int err = 0;
+	if (!nvgpu_alloc_initialized(dmem)) {
+		/* Align start and end addresses */
+		u32 start = NVGPU_ALIGN(sec2_init->nv_managed_area_offset,
+			PMU_DMEM_ALLOC_ALIGNMENT);
+
+		u32 end = (sec2_init->nv_managed_area_offset +
+			sec2_init->nv_managed_area_size) &
+			~(PMU_DMEM_ALLOC_ALIGNMENT - 1U);
+		u32 size = end - start;
+
+		err = nvgpu_allocator_init(g, dmem, NULL, "sec2_dmem", start,
+				size, PMU_DMEM_ALLOC_ALIGNMENT, 0ULL, 0ULL,
+				BITMAP_ALLOCATOR);
+		if (err != 0) {
+			nvgpu_err(g, "Couldn't init sec2_dmem allocator\n");
+		}
+	}
+	return err;
+}
+
+void nvgpu_sec2_dmem_allocator_destroy(struct nvgpu_allocator *dmem)
+{
+	if (nvgpu_alloc_initialized(dmem)) {
+		nvgpu_alloc_destroy(dmem);
+	}
+}