struct ion_handle *ion_alloc(struct ion_client *client, size_t len,
size_t align, unsigned int flags)
{
struct rb_node *n;
struct ion_handle *handle;
struct ion_device *dev = client->dev;
struct ion_buffer *buffer = NULL;
/*
* traverse the list of heaps available in this system in priority
* order. If the heap type is supported by the client, and matches the
* request of the caller allocate from it. Repeat until allocate has
* succeeded or all heaps have been tried
*/
mutex_lock(&dev->lock);
for (n = rb_first(&dev->heaps); n != NULL; n = rb_next(n)) {
struct ion_heap *heap = rb_entry(n, struct ion_heap, node);
/* if the client doesn't support this heap type */
if (!((1 << heap->type) & client->heap_mask))
continue;
/* if the caller didn't specify this heap ID */
if (!((1 << heap->id) & flags))
continue;
buffer = ion_buffer_create(heap, dev, len, align, flags);
if (!IS_ERR_OR_NULL(buffer))
break;
}
mutex_unlock(&dev->lock);
if (IS_ERR_OR_NULL(buffer))
return ERR_PTR(PTR_ERR(buffer));
handle = ion_handle_create(client, buffer);
if (IS_ERR_OR_NULL(handle))
goto end;
/*
* ion_buffer_create will create a buffer with a ref_cnt of 1,
* and ion_handle_create will take a second reference, drop one here
*/
ion_buffer_put(buffer);
mutex_lock(&client->lock);
ion_handle_add(client, handle);
mutex_unlock(&client->lock);
return handle;
end:
ion_buffer_put(buffer);
return handle;
}
int ion_share_dma_buf(struct ion_client *client, struct ion_handle *handle)
{
struct ion_buffer *buffer;
struct dma_buf *dmabuf;
bool valid_handle;
int fd;
mutex_lock(&client->lock);
valid_handle = ion_handle_validate(client, handle);
mutex_unlock(&client->lock);
if (!valid_handle) {
WARN(1, "%s: invalid handle passed to share.\n", __func__);
return -EINVAL;
}
buffer = handle->buffer;
ion_buffer_get(buffer);
dmabuf = dma_buf_export(buffer, &dma_buf_ops, buffer->size, O_RDWR);
if (IS_ERR(dmabuf)) {
ion_buffer_put(buffer);
return PTR_ERR(dmabuf);
}
fd = dma_buf_fd(dmabuf, O_CLOEXEC);
if (fd < 0)
dma_buf_put(dmabuf);
return fd;
}
/* Client lock must be locked when calling */
static void ion_handle_destroy(struct kref *kref)
{
struct ion_handle *handle = container_of(kref, struct ion_handle, ref);
/* XXX Can a handle be destroyed while it's map count is non-zero?:
if (handle->map_cnt) unmap
*/
WARN_ON(handle->kmap_cnt || handle->dmap_cnt || handle->usermap_cnt);
ion_buffer_put(handle->buffer);
if (!RB_EMPTY_NODE(&handle->node))
rb_erase(&handle->node, &handle->client->handles);
kfree(handle);
}
static void ion_handle_destroy(struct kref *kref)
{
struct ion_handle *handle = container_of(kref, struct ion_handle, ref);
/* XXX Can a handle be destroyed while it's map count is non-zero?:
if (handle->map_cnt) unmap
*/
WARN_ON(handle->kmap_cnt || handle->dmap_cnt || handle->usermap_cnt);
ion_buffer_put(handle->buffer);
//120817 [email protected] gpu: ion: Fix race condition with ion_import
// mutex_lock(&handle->client->lock);
if (!RB_EMPTY_NODE(&handle->node))
rb_erase(&handle->node, &handle->client->handles);
// mutex_unlock(&handle->client->lock);
kfree(handle);
}
static void ion_handle_destroy(struct kref *kref)
{
struct ion_handle *handle = container_of(kref, struct ion_handle, ref);
struct ion_client *client = handle->client;
struct ion_buffer *buffer = handle->buffer;
mutex_lock(&buffer->lock);
while (handle->kmap_cnt)
ion_handle_kmap_put(handle);
mutex_unlock(&buffer->lock);
if (!RB_EMPTY_NODE(&handle->node))
rb_erase(&handle->node, &client->handles);
ion_buffer_put(buffer);
kfree(handle);
}
struct ion_handle *ion_alloc(struct ion_client *client, size_t len,
size_t align, unsigned int flags)
{
struct rb_node *n;
struct ion_handle *handle;
struct ion_device *dev = client->dev;
struct ion_buffer *buffer = NULL;
unsigned long secure_allocation = flags & ION_SECURE;
const unsigned int MAX_DBG_STR_LEN = 64;
char dbg_str[MAX_DBG_STR_LEN];
unsigned int dbg_str_idx = 0;
dbg_str[0] = '\0';
/*
* traverse the list of heaps available in this system in priority
* order. If the heap type is supported by the client, and matches the
* request of the caller allocate from it. Repeat until allocate has
* succeeded or all heaps have been tried
*/
mutex_lock(&dev->lock);
for (n = rb_first(&dev->heaps); n != NULL; n = rb_next(n)) {
struct ion_heap *heap = rb_entry(n, struct ion_heap, node);
/* if the client doesn't support this heap type */
if (!((1 << heap->type) & client->heap_mask))
continue;
/* if the caller didn't specify this heap type */
if (!((1 << heap->id) & flags))
continue;
/* Do not allow un-secure heap if secure is specified */
if (secure_allocation && (heap->type != ION_HEAP_TYPE_CP))
continue;
if (heap->id == ION_CP_MM_HEAP_ID) {
if (client->task == NULL)
printk(KERN_WARNING "MM ION alloc request from %s (%d)\n",
client->name, client->pid);
else {
char task_comm[TASK_COMM_LEN];
get_task_comm(task_comm, client->task);
printk(KERN_WARNING "MM ION alloc request from %s (%d)\n",
task_comm, client->pid);
}
}
buffer = ion_buffer_create(heap, dev, len, align, flags);
if (!IS_ERR_OR_NULL(buffer))
break;
if (dbg_str_idx < MAX_DBG_STR_LEN) {
unsigned int len_left = MAX_DBG_STR_LEN-dbg_str_idx-1;
int ret_value = snprintf(&dbg_str[dbg_str_idx],
len_left, "%s ", heap->name);
if (ret_value >= len_left) {
/* overflow */
dbg_str[MAX_DBG_STR_LEN-1] = '\0';
dbg_str_idx = MAX_DBG_STR_LEN;
} else if (ret_value >= 0) {
dbg_str_idx += ret_value;
} else {
/* error */
dbg_str[MAX_DBG_STR_LEN-1] = '\0';
}
}
}
mutex_unlock(&dev->lock);
if (IS_ERR_OR_NULL(buffer)) {
pr_debug("ION is unable to allocate 0x%x bytes (alignment: "
"0x%x) from heap(s) %sfor client %s with heap "
"mask 0x%x\n",
len, align, dbg_str, client->name, client->heap_mask);
return ERR_PTR(PTR_ERR(buffer));
}
handle = ion_handle_create(client, buffer);
if (IS_ERR_OR_NULL(handle))
goto end;
/*
* ion_buffer_create will create a buffer with a ref_cnt of 1,
* and ion_handle_create will take a second reference, drop one here
*/
ion_buffer_put(buffer);
mutex_lock(&client->lock);
ion_handle_add(client, handle);
mutex_unlock(&client->lock);
return handle;
end:
ion_buffer_put(buffer);
return handle;
}
struct ion_handle *ion_alloc(struct ion_client *client, size_t len,
size_t align, unsigned int flags)
{
struct rb_node *n;
struct ion_handle *handle;
struct ion_device *dev = client->dev;
struct ion_buffer *buffer = NULL;
unsigned long secure_allocation = flags & ION_SECURE;
const unsigned int MAX_DBG_STR_LEN = 64;
char dbg_str[MAX_DBG_STR_LEN];
unsigned int dbg_str_idx = 0;
dbg_str[0] = '\0';
if (WARN_ON(!len))
return ERR_PTR(-EINVAL);
len = PAGE_ALIGN(len);
mutex_lock(&dev->lock);
for (n = rb_first(&dev->heaps); n != NULL; n = rb_next(n)) {
struct ion_heap *heap = rb_entry(n, struct ion_heap, node);
if (!((1 << heap->type) & client->heap_mask))
continue;
if (!((1 << heap->id) & flags))
continue;
if (secure_allocation && (heap->type != ION_HEAP_TYPE_CP))
continue;
buffer = ion_buffer_create(heap, dev, len, align, flags);
if (!IS_ERR_OR_NULL(buffer))
break;
if (dbg_str_idx < MAX_DBG_STR_LEN) {
unsigned int len_left = MAX_DBG_STR_LEN-dbg_str_idx-1;
int ret_value = snprintf(&dbg_str[dbg_str_idx],
len_left, "%s ", heap->name);
if (ret_value >= len_left) {
dbg_str[MAX_DBG_STR_LEN-1] = '\0';
dbg_str_idx = MAX_DBG_STR_LEN;
} else if (ret_value >= 0) {
dbg_str_idx += ret_value;
} else {
dbg_str[MAX_DBG_STR_LEN-1] = '\0';
}
}
}
mutex_unlock(&dev->lock);
if (buffer == NULL)
return ERR_PTR(-ENODEV);
if (IS_ERR(buffer)) {
pr_debug("ION is unable to allocate 0x%x bytes (alignment: "
"0x%x) from heap(s) %sfor client %s with heap "
"mask 0x%x\n",
len, align, dbg_str, client->name, client->heap_mask);
return ERR_PTR(PTR_ERR(buffer));
}
handle = ion_handle_create(client, buffer);
ion_buffer_put(buffer);
if (!IS_ERR(handle)) {
mutex_lock(&client->lock);
ion_handle_add(client, handle);
mutex_unlock(&client->lock);
}
return handle;
}
static void ion_dma_buf_release(struct dma_buf *dmabuf)
{
struct ion_buffer *buffer = dmabuf->priv;
ion_buffer_put(buffer);
}
struct ion_handle *ion_alloc(struct ion_client *client, size_t len,
size_t align, unsigned int flags)
{
struct rb_node *n;
struct ion_handle *handle;
struct ion_device *dev = client->dev;
struct ion_buffer *buffer = NULL;
unsigned long secure_allocation = flags & ION_SECURE;
const unsigned int MAX_DBG_STR_LEN = 64;
char dbg_str[MAX_DBG_STR_LEN];
unsigned int dbg_str_idx = 0;
dbg_str[0] = '\0';
/*
* traverse the list of heaps available in this system in priority
* order. If the heap type is supported by the client, and matches the
* request of the caller allocate from it. Repeat until allocate has
* succeeded or all heaps have been tried
*/
if (WARN_ON(!len))
return ERR_PTR(-EINVAL);
len = PAGE_ALIGN(len);
#if defined(CONFIG_MACH_LGE_L9II_OPEN_EU)
down_read(&dev->lock);
#else
mutex_lock(&dev->lock);
#endif
for (n = rb_first(&dev->heaps); n != NULL; n = rb_next(n)) {
struct ion_heap *heap = rb_entry(n, struct ion_heap, node);
/* if the client doesn't support this heap type */
if (!((1 << heap->type) & client->heap_mask))
continue;
/* if the caller didn't specify this heap type */
if (!((1 << heap->id) & flags))
continue;
/* Do not allow un-secure heap if secure is specified */
if (secure_allocation && (heap->type != ION_HEAP_TYPE_CP))
continue;
buffer = ion_buffer_create(heap, dev, len, align, flags);
if (!IS_ERR_OR_NULL(buffer))
break;
if (dbg_str_idx < MAX_DBG_STR_LEN) {
unsigned int len_left = MAX_DBG_STR_LEN-dbg_str_idx-1;
int ret_value = snprintf(&dbg_str[dbg_str_idx],
len_left, "%s ", heap->name);
if (ret_value >= len_left) {
/* overflow */
dbg_str[MAX_DBG_STR_LEN-1] = '\0';
dbg_str_idx = MAX_DBG_STR_LEN;
} else if (ret_value >= 0) {
dbg_str_idx += ret_value;
} else {
/* error */
dbg_str[MAX_DBG_STR_LEN-1] = '\0';
}
}
}
#if defined(CONFIG_MACH_LGE_L9II_OPEN_EU)
up_read(&dev->lock);
#else
mutex_unlock(&dev->lock);
#endif
if (buffer == NULL)
return ERR_PTR(-ENODEV);
if (IS_ERR(buffer)) {
pr_debug("ION is unable to allocate 0x%x bytes (alignment: "
"0x%x) from heap(s) %sfor client %s with heap "
"mask 0x%x\n",
len, align, dbg_str, client->name, client->heap_mask);
return ERR_PTR(PTR_ERR(buffer));
}
handle = ion_handle_create(client, buffer);
/*
* ion_buffer_create will create a buffer with a ref_cnt of 1,
* and ion_handle_create will take a second reference, drop one here
*/
ion_buffer_put(buffer);
if (!IS_ERR(handle)) {
mutex_lock(&client->lock);
ion_handle_add(client, handle);
mutex_unlock(&client->lock);
}
return handle;
}
