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/*
* 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 <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;
data->ion_handle = handle_data.handle;
ALOGD_IF(DEBUG, "ion: Allocated buffer base:%p size:%zu fd:%d handle:0x%x", data->base,
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);
}
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::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
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