summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorangelsl <hidingfromhidden@gmail.com>2013-02-18 10:48:53 (GMT)
committerangelsl <hidingfromhidden@gmail.com>2013-02-24 07:02:23 (GMT)
commit7796223f9e95b28e386efd10aeccea9fe0a1067b (patch)
tree176d8877a39f87dcf55c1825e2c8a4827c1f5f35
parent4593ebd941446a7b50aac3b2e9e32b574d19f3bd (diff)
downloadandroid_hardware_samsung-jellybean.zip
android_hardware_samsung-jellybean.tar.gz
android_hardware_samsung-jellybean.tar.bz2
exynos4: Add open source libsecion.jellybean
This libsecion is reverse engineered from the libsecion.so blob and then written based on the Exynos 5 libion available in AOSP. Change-Id: I07495fc1f98c70756e416afd99764842d7223a36 Signed-off-by: angelsl <hidingfromhidden@gmail.com>
-rw-r--r--exynos4/hal/Android.mk2
-rw-r--r--exynos4/hal/include/secion.h60
-rw-r--r--exynos4/hal/libsecion/Android.mk32
-rw-r--r--exynos4/hal/libsecion/libsecion.cpp201
4 files changed, 294 insertions, 1 deletions
diff --git a/exynos4/hal/Android.mk b/exynos4/hal/Android.mk
index 6b9a7ce..1a9c10e 100644
--- a/exynos4/hal/Android.mk
+++ b/exynos4/hal/Android.mk
@@ -16,7 +16,7 @@
ifeq ($(TARGET_BOARD_PLATFORM),exynos4)
-common_exynos4_dirs := libgralloc_ump libhdmi libhwcomposer libhwconverter
+common_exynos4_dirs := libgralloc_ump libhdmi libhwcomposer libhwconverter libsecion
ifneq ($(BOARD_USES_PROPRIETARY_LIBCAMERA),true)
common_exynos4_dirs += libcamera
diff --git a/exynos4/hal/include/secion.h b/exynos4/hal/include/secion.h
new file mode 100644
index 0000000..eb701e9
--- /dev/null
+++ b/exynos4/hal/include/secion.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _LIB_SECION_H_
+#define _LIB_SECION_H_
+
+#include <unistd.h>
+
+typedef unsigned long ion_phys_addr_t;
+typedef int ion_client;
+typedef int ion_buffer;
+
+enum ION_MSYNC_FLAGS {
+ IMSYNC_DEV_TO_READ = 0,
+ IMSYNC_DEV_TO_WRITE = 1,
+ IMSYNC_DEV_TO_RW = 2,
+ IMSYNC_SYNC_FOR_DEV = 0x10000,
+ IMSYNC_SYNC_FOR_CPU = 0x20000,
+};
+
+struct secion_param {
+ ion_client client;
+ ion_buffer buffer;
+ size_t size;
+ void *memory;
+ ion_phys_addr_t physaddr;
+};
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+ion_client ion_client_create(void);
+void ion_client_destroy(ion_client client);
+ion_buffer ion_alloc(ion_client client, size_t len, size_t align, unsigned int flags);
+void ion_free(ion_buffer buffer);
+void *ion_map(ion_buffer buffer, size_t len, off_t offset);
+int ion_unmap(void *addr, size_t len);
+int ion_msync(ion_client client, ion_buffer buffer, enum ION_MSYNC_FLAGS flags, size_t size, off_t offset);
+ion_phys_addr_t ion_getphys(ion_client client, ion_buffer buffer);
+int createIONMem(struct secion_param *param, size_t size, unsigned int flags);
+int destroyIONMem(struct secion_param *param);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* _LIB_SECION_H_ */
diff --git a/exynos4/hal/libsecion/Android.mk b/exynos4/hal/libsecion/Android.mk
new file mode 100644
index 0000000..349c53b
--- /dev/null
+++ b/exynos4/hal/libsecion/Android.mk
@@ -0,0 +1,32 @@
+# Copyright (C) 2008 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+ifeq ($(filter-out exynos4,$(TARGET_BOARD_PLATFORM)),)
+
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_PRELINK_MODULE := false
+LOCAL_SHARED_LIBRARIES := liblog libcutils
+
+LOCAL_C_INCLUDES := \
+ $(LOCAL_PATH)/../include
+
+LOCAL_SRC_FILES := libsecion.cpp
+
+LOCAL_MODULE_TAGS := optional
+LOCAL_MODULE := libsecion
+include $(BUILD_SHARED_LIBRARY)
+
+endif
diff --git a/exynos4/hal/libsecion/libsecion.cpp b/exynos4/hal/libsecion/libsecion.cpp
new file mode 100644
index 0000000..614c6e1
--- /dev/null
+++ b/exynos4/hal/libsecion/libsecion.cpp
@@ -0,0 +1,201 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "libsecion"
+
+#include <secion.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <sys/ioctl.h>
+#include <cutils/log.h>
+
+#define ION_IOC_MAGIC 'I'
+#define ION_IOC_ALLOC _IOWR(ION_IOC_MAGIC, 0, struct ion_allocation_data)
+#define ION_IOC_FREE _IOWR(ION_IOC_MAGIC, 1, struct ion_handle_data)
+#define ION_IOC_MAP _IOWR(ION_IOC_MAGIC, 2, struct ion_fd_data)
+#define ION_IOC_SHARE _IOWR(ION_IOC_MAGIC, 4, struct ion_fd_data)
+#define ION_IOC_IMPORT _IOWR(ION_IOC_MAGIC, 5, int)
+#define ION_IOC_CUSTOM _IOWR(ION_IOC_MAGIC, 6, struct ion_custom_data)
+
+typedef unsigned long ion_handle;
+
+struct ion_allocation_data {
+ size_t len;
+ size_t align;
+ unsigned int flags;
+ ion_handle *handle;
+};
+
+struct ion_fd_data {
+ ion_handle *handle;
+ int fd;
+};
+
+struct ion_handle_data {
+ ion_handle *handle;
+};
+
+struct ion_custom_data {
+ unsigned int cmd;
+ unsigned long arg;
+};
+
+struct ion_msync_data {
+ enum ION_MSYNC_FLAGS dir;
+ int fd;
+ size_t size;
+ off_t offset;
+};
+
+struct ion_phys_data {
+ int fd;
+ ion_phys_addr_t phys;
+ size_t size;
+};
+
+enum ION_EXYNOS_CUSTOM_CMD {
+ ION_EXYNOS_CUSTOM_MSYNC,
+ ION_EXYNOS_CUSTOM_PHYS
+};
+
+ion_client ion_client_create(void)
+{
+ return open("/dev/ion", O_RDWR);
+}
+
+void ion_client_destroy(ion_client client)
+{
+ close(client);
+}
+
+ion_buffer ion_alloc(ion_client client, size_t len, size_t align, unsigned int flags)
+{
+ int ret;
+ struct ion_handle_data arg_free;
+ struct ion_fd_data arg_share;
+ struct ion_allocation_data arg_alloc;
+
+ arg_alloc.len = len;
+ arg_alloc.align = align;
+ arg_alloc.flags = flags;
+
+ ret = ioctl(client, ION_IOC_ALLOC, &arg_alloc);
+ if (ret < 0)
+ return ret;
+
+ arg_share.handle = arg_alloc.handle;
+ ret = ioctl(client, ION_IOC_SHARE, &arg_share);
+
+ arg_free.handle = arg_alloc.handle;
+ ioctl(client, ION_IOC_FREE, &arg_free);
+
+ if (ret < 0)
+ return ret;
+
+ return arg_share.fd;
+}
+
+void ion_free(ion_buffer buffer)
+{
+ close(buffer);
+}
+
+void *ion_map(ion_buffer buffer, size_t len, off_t offset)
+{
+ return mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED,
+ buffer, offset);
+}
+
+int ion_unmap(void *addr, size_t len)
+{
+ return munmap(addr, len);
+}
+
+int ion_msync(ion_client client, ion_buffer buffer, enum ION_MSYNC_FLAGS flags, size_t size, off_t offset)
+{
+ struct ion_msync_data arg_cdata;
+ arg_cdata.size = size;
+ arg_cdata.dir = flags;
+ arg_cdata.fd = buffer;
+ arg_cdata.offset = offset;
+
+ struct ion_custom_data arg_custom;
+ arg_custom.cmd = ION_EXYNOS_CUSTOM_MSYNC;
+ arg_custom.arg = (unsigned long) &arg_cdata;
+
+ return ioctl(client, ION_IOC_CUSTOM, &arg_custom);
+}
+
+ion_phys_addr_t ion_getphys(ion_client client, ion_buffer buffer)
+{
+ struct ion_phys_data arg_cdata;
+ arg_cdata.fd = buffer;
+
+ struct ion_custom_data arg_custom;
+ arg_custom.cmd = ION_EXYNOS_CUSTOM_PHYS;
+ arg_custom.arg = (unsigned long) &arg_cdata;
+
+ if(ioctl(client, ION_IOC_CUSTOM, &arg_custom) < 0)
+ return 0;
+
+ return arg_cdata.phys;
+}
+
+int createIONMem(struct secion_param *param, size_t size, unsigned int flags)
+{
+ if(param->client < 0 && (param->client = ion_client_create()) < 0) {
+ ALOGE("createIONMem:: ion_client_create fail\n");
+ goto fail;
+ }
+
+ if(param->buffer < 0 && (param->buffer = ion_alloc(param->client, size, 0x10000, flags)) < 0) {
+ ALOGE("createIONMem:: ion_alloc fail\n");
+ goto fail;
+ }
+
+ if((param->physaddr = ion_getphys(param->client, param->buffer)) == 0) {
+ ALOGE("createIONMem:: ion_getphys fail, phys_addr = 0\n");
+ goto fail;
+ }
+
+ if((param->memory = ion_map(param->buffer, size, 0)) == (void*)-1) {
+ ALOGE("createIONMem:: ion_map fail\n");
+ goto fail;
+ } else {
+ param->size = size;
+ return 0;
+ }
+
+fail:
+ if(param->memory > 0) munmap(param->memory, size);
+ if(param->buffer > 0) ion_free(param->buffer);
+ param->buffer = -1;
+ param->size = 0;
+ param->memory = 0;
+ param->physaddr = 0;
+ return -1;
+}
+
+int destroyIONMem(struct secion_param *param)
+{
+ if(param->memory != 0) munmap(param->memory, param->size);
+ if(param->buffer >= 0) ion_free(param->buffer);
+ param->buffer = -1;
+ param->size = 0;
+ param->memory = 0;
+ param->physaddr = 0;
+ return 0;
+}