You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
232 lines
6.7 KiB
232 lines
6.7 KiB
/*
|
|
* Copyright (c) 2011-2012,2014, 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
|
|
#include <sys/ioctl.h>
|
|
#include <sys/mman.h>
|
|
#include <stdlib.h>
|
|
#include <fcntl.h>
|
|
#include <cutils/log.h>
|
|
#include <errno.h>
|
|
#include "gralloc_priv.h"
|
|
#include "ionalloc.h"
|
|
|
|
using gralloc::IonAlloc;
|
|
|
|
#define ION_DEVICE "/dev/ion"
|
|
|
|
int IonAlloc::open_device()
|
|
{
|
|
if(mIonFd == FD_INIT)
|
|
mIonFd = open(ION_DEVICE, O_RDONLY);
|
|
|
|
if(mIonFd < 0 ) {
|
|
ALOGE("%s: Failed to open ion device - %s",
|
|
__FUNCTION__, strerror(errno));
|
|
mIonFd = FD_INIT;
|
|
return -errno;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void IonAlloc::close_device()
|
|
{
|
|
if(mIonFd >= 0)
|
|
close(mIonFd);
|
|
mIonFd = FD_INIT;
|
|
}
|
|
|
|
int IonAlloc::alloc_buffer(alloc_data& data)
|
|
{
|
|
Locker::Autolock _l(mLock);
|
|
int err = 0;
|
|
struct ion_handle_data handle_data;
|
|
struct ion_fd_data fd_data;
|
|
struct ion_allocation_data ionAllocData;
|
|
void *base = 0;
|
|
|
|
ionAllocData.len = data.size;
|
|
ionAllocData.align = data.align;
|
|
ionAllocData.heap_id_mask = data.flags & ~ION_SECURE;
|
|
ionAllocData.flags = data.uncached ? 0 : ION_FLAG_CACHED;
|
|
// ToDo: replace usage of alloc data structure with
|
|
// ionallocdata structure.
|
|
if (data.flags & ION_SECURE)
|
|
ionAllocData.flags |= ION_SECURE;
|
|
|
|
err = open_device();
|
|
if (err)
|
|
return err;
|
|
if(ioctl(mIonFd, ION_IOC_ALLOC, &ionAllocData)) {
|
|
err = -errno;
|
|
ALOGE("ION_IOC_ALLOC failed with error - %s", strerror(errno));
|
|
return err;
|
|
}
|
|
|
|
fd_data.handle = ionAllocData.handle;
|
|
handle_data.handle = ionAllocData.handle;
|
|
if(ioctl(mIonFd, ION_IOC_MAP, &fd_data)) {
|
|
err = -errno;
|
|
ALOGE("%s: ION_IOC_MAP failed with error - %s",
|
|
__FUNCTION__, strerror(errno));
|
|
ioctl(mIonFd, ION_IOC_FREE, &handle_data);
|
|
return err;
|
|
}
|
|
|
|
if(!(data.flags & ION_SECURE)) {
|
|
base = mmap(0, ionAllocData.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(mIonFd, ION_IOC_FREE, &handle_data);
|
|
return err;
|
|
}
|
|
}
|
|
|
|
data.base = base;
|
|
data.fd = fd_data.fd;
|
|
ioctl(mIonFd, ION_IOC_FREE, &handle_data);
|
|
ALOGD_IF(DEBUG, "ion: Allocated buffer base:%p size:%zu fd:%d",
|
|
data.base, ionAllocData.len, data.fd);
|
|
return 0;
|
|
}
|
|
|
|
|
|
int IonAlloc::free_buffer(void* base, unsigned int size, unsigned int offset,
|
|
int fd)
|
|
{
|
|
Locker::Autolock _l(mLock);
|
|
ALOGD_IF(DEBUG, "ion: Freeing buffer base:%p size:%u fd:%d",
|
|
base, size, fd);
|
|
int err = 0;
|
|
err = open_device();
|
|
if (err)
|
|
return err;
|
|
|
|
if(base)
|
|
err = unmap_buffer(base, size, offset);
|
|
close(fd);
|
|
return err;
|
|
}
|
|
|
|
int IonAlloc::map_buffer(void **pBase, unsigned int size, unsigned int offset,
|
|
int fd)
|
|
{
|
|
int err = 0;
|
|
void *base = 0;
|
|
// It is a (quirky) requirement of ION to have opened the
|
|
// ion fd in the process that is doing the mapping
|
|
err = open_device();
|
|
if (err)
|
|
return err;
|
|
|
|
base = mmap(0, size, PROT_READ| PROT_WRITE,
|
|
MAP_SHARED, fd, 0);
|
|
*pBase = base;
|
|
if(base == 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",
|
|
base, size, offset, fd);
|
|
}
|
|
return err;
|
|
}
|
|
|
|
int IonAlloc::unmap_buffer(void *base, unsigned int size,
|
|
unsigned int /*offset*/)
|
|
{
|
|
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::clean_buffer(void *base, unsigned int size, unsigned int offset,
|
|
int fd, int op)
|
|
{
|
|
struct ion_flush_data flush_data;
|
|
struct ion_fd_data fd_data;
|
|
struct ion_handle_data handle_data;
|
|
int err = 0;
|
|
|
|
err = open_device();
|
|
if (err)
|
|
return err;
|
|
|
|
fd_data.fd = fd;
|
|
if (ioctl(mIonFd, 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 int)&flush_data;
|
|
|
|
if(ioctl(mIonFd, ION_IOC_CUSTOM, &d)) {
|
|
err = -errno;
|
|
ALOGE("%s: ION_IOC_CLEAN_INV_CACHES failed with error - %s",
|
|
|
|
__FUNCTION__, strerror(errno));
|
|
ioctl(mIonFd, ION_IOC_FREE, &handle_data);
|
|
return err;
|
|
}
|
|
ioctl(mIonFd, ION_IOC_FREE, &handle_data);
|
|
return 0;
|
|
}
|
|
|