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Visionbuf: refactor ion_fd to struct IonFileHandle (#505)

This commit is contained in:
Dean Lee 2023-08-23 04:08:45 +08:00 committed by GitHub
parent ac0fb38e24
commit e7c42fd11c
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 18 additions and 15 deletions
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33
visionipc/visionbuf_ion.cc
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@ -40,30 +40,35 @@
#define DEVICE_PAGE_SIZE_CL 4096
#define PADDING_CL 0
static int ion_fd = -1;
static void ion_init() {
if (ion_fd == -1) {
ion_fd = open("/dev/ion", O_RDWR | O_NONBLOCK);
struct IonFileHandle {
IonFileHandle() {
fd = open("/dev/ion", O_RDWR | O_NONBLOCK);
assert(fd >= 0);
}
~IonFileHandle() {
close(fd);
}
int fd = -1;
};
int ion_fd() {
static IonFileHandle fh;
return fh.fd;
}
void VisionBuf::allocate(size_t length) {
int err;
ion_init();
struct ion_allocation_data ion_alloc = {0};
ion_alloc.len = length + PADDING_CL + sizeof(uint64_t);
ion_alloc.align = 4096;
ion_alloc.heap_id_mask = 1 << ION_IOMMU_HEAP_ID;
ion_alloc.flags = ION_FLAG_CACHED;
err = HANDLE_EINTR(ioctl(ion_fd, ION_IOC_ALLOC, &ion_alloc));
int err = HANDLE_EINTR(ioctl(ion_fd(), ION_IOC_ALLOC, &ion_alloc));
assert(err == 0);
struct ion_fd_data ion_fd_data = {0};
ion_fd_data.handle = ion_alloc.handle;
err = HANDLE_EINTR(ioctl(ion_fd, ION_IOC_SHARE, &ion_fd_data));
err = HANDLE_EINTR(ioctl(ion_fd(), ION_IOC_SHARE, &ion_fd_data));
assert(err == 0);
void *mmap_addr = mmap(NULL, ion_alloc.len,
@ -85,12 +90,10 @@ void VisionBuf::import(){
int err;
assert(this->fd >= 0);
ion_init();
// Get handle
struct ion_fd_data fd_data = {0};
fd_data.fd = this->fd;
err = HANDLE_EINTR(ioctl(ion_fd, ION_IOC_IMPORT, &fd_data));
err = HANDLE_EINTR(ioctl(ion_fd(), ION_IOC_IMPORT, &fd_data));
assert(err == 0);
this->handle = fd_data.handle;
@ -136,7 +139,7 @@ int VisionBuf::sync(int dir) {
ION_IOC_INV_CACHES : ION_IOC_CLEAN_CACHES;
custom_data.arg = (unsigned long)&flush_data;
return HANDLE_EINTR(ioctl(ion_fd, ION_IOC_CUSTOM, &custom_data));
return HANDLE_EINTR(ioctl(ion_fd(), ION_IOC_CUSTOM, &custom_data));
}
int VisionBuf::free() {
@ -154,5 +157,5 @@ int VisionBuf::free() {
if (err != 0) return err;
struct ion_handle_data handle_data = {.handle = this->handle};
return HANDLE_EINTR(ioctl(ion_fd, ION_IOC_FREE, &handle_data));
return HANDLE_EINTR(ioctl(ion_fd(), ION_IOC_FREE, &handle_data));
}