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ion drivers: add 'query client infomation' interface for vpu

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This commit is contained in:
kfx
2012-03-19 16:02:18 +08:00
parent df6aedd2e7
commit bbe02462c1
2 changed files with 45 additions and 0 deletions
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34
drivers/gpu/ion/ion.c
View File

@@ -1111,6 +1111,40 @@ static long ion_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
return err;
break;
}
case ION_GET_CLIENT:
{
struct ion_handle *handle;
struct ion_client_data data;
struct rb_node *n;
if (copy_from_user(&data, (void __user *)arg,
sizeof(struct ion_client_data)))
return -EFAULT;
mutex_lock(&client->lock);
switch (data.type) {
case ION_TYPE_GET_TOTAL_SIZE:
data.total_size = 0;
for (n = rb_first(&client->handles); n; n = rb_next(n)) {
handle = rb_entry(n, struct ion_handle, node);
data.total_size += handle->buffer->size;
}
break;
case ION_TYPE_SIZE_GET_COUNT:
data.count = 0;
for (n = rb_first(&client->handles); n; n = rb_next(n)) {
handle = rb_entry(n, struct ion_handle, node);
if(handle->buffer->size == data.size)
data.count++;
}
break;
}
mutex_unlock(&client->lock);
if (copy_to_user((void __user *)arg, &data,
sizeof(struct ion_client_data)))
return -EFAULT;
break;
}
default:
return -ENOTTY;
}

11
include/linux/ion.h
View File

@@ -312,6 +312,16 @@ struct ion_flush_data {
void *virt;
size_t size;
};
struct ion_client_data {
#define ION_TYPE_GET_TOTAL_SIZE 0
#define ION_TYPE_SIZE_GET_COUNT 1
unsigned int type;
union {
size_t size;
size_t total_size;
};
unsigned int count;
};
#define ION_IOC_MAGIC 'I'
/**
@@ -371,4 +381,5 @@ struct ion_flush_data {
#define ION_CACHE_CLEAN _IOWR(ION_IOC_MAGIC, 8, struct ion_flush_data)
#define ION_CACHE_INVALID _IOWR(ION_IOC_MAGIC, 9, struct ion_flush_data)
#define ION_GET_PHYS _IOWR(ION_IOC_MAGIC, 10, unsigned long)
#define ION_GET_CLIENT _IOWR(ION_IOC_MAGIC, 11, struct ion_client_data)
#endif /* _LINUX_ION_H */