gralloc1 : initial implementation
Initial implementation of the gralloc1 APIs
Change-Id: I3b01595b0f9b30d9a08d02101fe42281556bd6a2
diff --git a/libgralloc1/gr_ion_alloc.h b/libgralloc1/gr_ion_alloc.h
new file mode 100644
index 0000000..baef8aa
--- /dev/null
+++ b/libgralloc1/gr_ion_alloc.h
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
+
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials provided
+ * with the distribution.
+ * * Neither the name of The Linux Foundation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __GR_ION_ALLOC_H__
+#define __GR_ION_ALLOC_H__
+
+#include <linux/msm_ion.h>
+
+#define FD_INIT -1
+
+namespace gralloc1 {
+
+enum {
+ CACHE_CLEAN = 0x1,
+ CACHE_INVALIDATE,
+ CACHE_CLEAN_AND_INVALIDATE,
+};
+
+struct AllocData {
+ void *base = NULL;
+ int fd = -1;
+ unsigned int offset = 0;
+ unsigned int size = 0;
+ unsigned int align = 1;
+ uintptr_t handle = 0;
+ bool uncached = false;
+ unsigned int flags = 0x0;
+ unsigned int heap_id = 0x0;
+ unsigned int alloc_type = 0x0;
+};
+
+class IonAlloc {
+ public:
+ IonAlloc() { ion_dev_fd_ = FD_INIT; }
+
+ ~IonAlloc() { CloseIonDevice(); }
+
+ bool Init();
+ int AllocBuffer(AllocData *data);
+ int FreeBuffer(void *base, unsigned int size, unsigned int offset, int fd);
+ int MapBuffer(void **base, unsigned int size, unsigned int offset, int fd);
+ int UnmapBuffer(void *base, unsigned int size, unsigned int offset);
+ int CleanBuffer(void *base, unsigned int size, unsigned int offset, int fd, int op);
+
+ private:
+ const char *kIonDevice = "/dev/ion";
+
+ int OpenIonDevice();
+ void CloseIonDevice();
+
+ int ion_dev_fd_;
+};
+
+} // namespace gralloc1
+
+#endif // __GR_ION_ALLOC_H__