1 files changed, 204 insertions, 0 deletions
diff --git a/msm8909/gralloc/gr_ion_alloc.cpp b/msm8909/gralloc/gr_ion_alloc.cpp
new file mode 100644
index 00000000..680a516a
--- /dev/null
+++ b/msm8909/gralloc/gr_ion_alloc.cpp
@@ -0,0 +1,204 @@
+/*
+ * Copyright (c) 2011-2017, 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 <string.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <log/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;
+
+  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;
+  }
+
+  data->fd = fd_data.fd;
+  data->ion_handle = handle_data.handle;
+  ALOGD_IF(DEBUG, "ion: Allocated buffer size:%zu fd:%d handle:0x%x",
+          ion_alloc_data.len, data->fd, data->ion_handle);
+
+  return 0;
+}
+
+int IonAlloc::FreeBuffer(void *base, unsigned int size, unsigned int offset, int fd,
+                         int ion_handle) {
+  ATRACE_CALL();
+  int err = 0;
+  ALOGD_IF(DEBUG, "ion: Freeing buffer base:%p size:%u fd:%d handle:0x%x", base, size, fd,
+           ion_handle);
+
+  if (base) {
+    err = UnmapBuffer(base, size, offset);
+  }
+
+  if (ion_handle > 0) {
+    struct ion_handle_data handle_data;
+    handle_data.handle = ion_handle;
+    ioctl(ion_dev_fd_, INT(ION_IOC_FREE), &handle_data);
+  }
+  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::ImportBuffer(int fd) {
+  struct ion_fd_data fd_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;
+  }
+  return fd_data.handle;
+}
+
+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 handle, int op) {
+  ATRACE_CALL();
+  ATRACE_INT("operation id", op);
+  struct ion_flush_data flush_data;
+  int err = 0;
+
+  flush_data.handle = 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));
+    return err;
+  }
+
+  return 0;
+}
+
+}  // namespace gralloc1