gralloc1 : initial implementation
Initial implementation of the gralloc1 APIs
Change-Id: I3b01595b0f9b30d9a08d02101fe42281556bd6a2
diff --git a/libgralloc1/gr_ion_alloc.cpp b/libgralloc1/gr_ion_alloc.cpp
new file mode 100644
index 0000000..ca93a63
--- /dev/null
+++ b/libgralloc1/gr_ion_alloc.cpp
@@ -0,0 +1,209 @@
+/*
+ * 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.
+ */
+
+#define DEBUG 0
+#define ATRACE_TAG (ATRACE_TAG_GRAPHICS | ATRACE_TAG_HAL)
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <cutils/log.h>
+#include <errno.h>
+#include <utils/Trace.h>
+
+#include "gralloc_priv.h"
+#include "gr_utils.h"
+#include "gr_ion_alloc.h"
+
+namespace gralloc1 {
+
+bool IonAlloc::Init() {
+ if (ion_dev_fd_ == FD_INIT) {
+ ion_dev_fd_ = open(kIonDevice, O_RDONLY);
+ }
+
+ if (ion_dev_fd_ < 0) {
+ ALOGE("%s: Failed to open ion device - %s", __FUNCTION__, strerror(errno));
+ ion_dev_fd_ = FD_INIT;
+ return false;
+ }
+
+ return true;
+}
+
+void IonAlloc::CloseIonDevice() {
+ if (ion_dev_fd_ > FD_INIT) {
+ close(ion_dev_fd_);
+ }
+
+ ion_dev_fd_ = FD_INIT;
+}
+
+int IonAlloc::AllocBuffer(AllocData *data) {
+ ATRACE_CALL();
+ int err = 0;
+ struct ion_handle_data handle_data;
+ struct ion_fd_data fd_data;
+ struct ion_allocation_data ion_alloc_data;
+ void *base = NULL;
+
+ ion_alloc_data.len = data->size;
+ ion_alloc_data.align = data->align;
+ ion_alloc_data.heap_id_mask = data->heap_id;
+ ion_alloc_data.flags = data->flags;
+ ion_alloc_data.flags |= data->uncached ? 0 : ION_FLAG_CACHED;
+
+ if (ioctl(ion_dev_fd_, INT(ION_IOC_ALLOC), &ion_alloc_data)) {
+ err = -errno;
+ ALOGE("ION_IOC_ALLOC failed with error - %s", strerror(errno));
+ return err;
+ }
+
+ fd_data.handle = ion_alloc_data.handle;
+ handle_data.handle = ion_alloc_data.handle;
+ if (ioctl(ion_dev_fd_, INT(ION_IOC_MAP), &fd_data)) {
+ err = -errno;
+ ALOGE("%s: ION_IOC_MAP failed with error - %s", __FUNCTION__, strerror(errno));
+ ioctl(ion_dev_fd_, INT(ION_IOC_FREE), &handle_data);
+ return err;
+ }
+
+ if (!(INT(data->flags) & INT(ION_SECURE))) {
+ base = mmap(0, ion_alloc_data.len, PROT_READ | PROT_WRITE, MAP_SHARED, fd_data.fd, 0);
+ if (base == MAP_FAILED) {
+ err = -errno;
+ ALOGE("%s: Failed to map the allocated memory: %s", __FUNCTION__, strerror(errno));
+ ioctl(ion_dev_fd_, INT(ION_IOC_FREE), &handle_data);
+ return err;
+ }
+ }
+
+ data->base = base;
+ data->fd = fd_data.fd;
+ ioctl(ion_dev_fd_, INT(ION_IOC_FREE), &handle_data);
+ ALOGD_IF(DEBUG, "ion: Allocated buffer base:%p size:%zu fd:%d", data->base, ion_alloc_data.len,
+ data->fd);
+
+ return 0;
+}
+
+int IonAlloc::FreeBuffer(void *base, unsigned int size, unsigned int offset, int fd) {
+ ATRACE_CALL();
+ int err = 0;
+ ALOGD_IF(DEBUG, "ion: Freeing buffer base:%p size:%u fd:%d", base, size, fd);
+
+ if (base) {
+ err = UnmapBuffer(base, size, offset);
+ }
+ close(fd);
+
+ return err;
+}
+
+int IonAlloc::MapBuffer(void **base, unsigned int size, unsigned int offset, int fd) {
+ ATRACE_CALL();
+ int err = 0;
+ void *addr = 0;
+
+ // It is a (quirky) requirement of ION to have opened the
+ // ion fd in the process that is doing the mapping
+ addr = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+ *base = addr;
+ if (addr == MAP_FAILED) {
+ err = -errno;
+ ALOGE("ion: Failed to map memory in the client: %s", strerror(errno));
+ } else {
+ ALOGD_IF(DEBUG, "ion: Mapped buffer base:%p size:%u offset:%u fd:%d", addr, size, offset, fd);
+ }
+
+ return err;
+}
+
+int IonAlloc::UnmapBuffer(void *base, unsigned int size, unsigned int /*offset*/) {
+ ATRACE_CALL();
+ ALOGD_IF(DEBUG, "ion: Unmapping buffer base:%p size:%u", base, size);
+
+ int err = 0;
+ if (munmap(base, size)) {
+ err = -errno;
+ ALOGE("ion: Failed to unmap memory at %p : %s", base, strerror(errno));
+ }
+
+ return err;
+}
+
+int IonAlloc::CleanBuffer(void *base, unsigned int size, unsigned int offset, int fd, int op) {
+ ATRACE_CALL();
+ ATRACE_INT("operation id", op);
+ struct ion_flush_data flush_data;
+ struct ion_fd_data fd_data;
+ struct ion_handle_data handle_data;
+ int err = 0;
+
+ fd_data.fd = fd;
+ if (ioctl(ion_dev_fd_, INT(ION_IOC_IMPORT), &fd_data)) {
+ err = -errno;
+ ALOGE("%s: ION_IOC_IMPORT failed with error - %s", __FUNCTION__, strerror(errno));
+ return err;
+ }
+
+ handle_data.handle = fd_data.handle;
+ flush_data.handle = fd_data.handle;
+ flush_data.vaddr = base;
+ // offset and length are unsigned int
+ flush_data.offset = offset;
+ flush_data.length = size;
+
+ struct ion_custom_data d;
+ switch (op) {
+ case CACHE_CLEAN:
+ d.cmd = ION_IOC_CLEAN_CACHES;
+ break;
+ case CACHE_INVALIDATE:
+ d.cmd = ION_IOC_INV_CACHES;
+ break;
+ case CACHE_CLEAN_AND_INVALIDATE:
+ default:
+ d.cmd = ION_IOC_CLEAN_INV_CACHES;
+ }
+
+ d.arg = (unsigned long)(&flush_data); // NOLINT
+ if (ioctl(ion_dev_fd_, INT(ION_IOC_CUSTOM), &d)) {
+ err = -errno;
+ ALOGE("%s: ION_IOC_CLEAN_INV_CACHES failed with error - %s", __FUNCTION__, strerror(errno));
+ ioctl(ion_dev_fd_, INT(ION_IOC_FREE), &handle_data);
+ return err;
+ }
+
+ ioctl(ion_dev_fd_, INT(ION_IOC_FREE), &handle_data);
+
+ return 0;
+}
+
+} // namespace gralloc1