misc/mei/main.c

43  * @file: pointer to file structure
47 static int mei_open(struct inode *inode, struct file *file)
71 	cl->fp = file;
72 	file->private_data = cl;
76 	return nonseekable_open(inode, file);
87  * @fp: pointer to file structure
91 				     const struct file *fp)
108  * @file: pointer to file structure
112 static int mei_release(struct inode *inode, struct file *file)
114 	struct mei_cl *cl = file->private_data;
125 	mei_cl_vtag_remove_by_fp(cl, file);
129 		mei_cl_flush_queues(cl, file);
141 		mei_cl_flush_queues(cl, file);
152 	file->private_data = NULL;
162  * @file: pointer to file structure
169 static ssize_t mei_read(struct file *file, char __user *ubuf,
172 	struct mei_cl *cl = file->private_data;
175 	bool nonblock = !!(file->f_flags & O_NONBLOCK);
200 	cb = mei_cl_read_cb(cl, file);
207 	rets = mei_cl_read_start(cl, length, file);
220 				     mei_cl_read_cb(cl, file) ||
233 	cb = mei_cl_read_cb(cl, file);
281  * mei_cl_vtag_by_fp - obtain the vtag by file pointer
284  * @fp: pointer to file structure
288 static u8 mei_cl_vtag_by_fp(const struct mei_cl *cl, const struct file *fp)
304  * @file: pointer to file structure
311 static ssize_t mei_write(struct file *file, const char __user *ubuf,
314 	struct mei_cl *cl = file->private_data;
353 		if (file->f_flags & O_NONBLOCK) {
373 	cb = mei_cl_alloc_cb(cl, length, MEI_FOP_WRITE, file);
378 	cb->vtag = mei_cl_vtag_by_fp(cl, file);
397  * @file: private data of the file object
405 static int mei_ioctl_connect_client(struct file *file,
414 	cl = file->private_data;
453 	rets = mei_cl_connect(cl, me_cl, file);
496  * @file: private data of the file object
505 static int mei_ioctl_connect_vtag(struct file *file,
515 	cl = file->private_data;
522 		if (mei_cl_vtag_by_fp(cl, file) != vtag) {
552 			file->private_data = pos;
557 		cl_vtag = mei_cl_vtag_alloc(file, vtag);
581 		return mei_ioctl_connect_client(file, in_client_uuid, client);
593  * @file: pointer to file structure
598 static int mei_ioctl_client_notify_request(const struct file *file, u32 request)
600 	struct mei_cl *cl = file->private_data;
606 	return mei_cl_notify_request(cl, file, (u8)request);
612  * @file: pointer to file structure
617 static int mei_ioctl_client_notify_get(const struct file *file, u32 *notify_get)
619 	struct mei_cl *cl = file->private_data;
621 	bool block = (file->f_flags & O_NONBLOCK) == 0;
635  * @file: pointer to file structure
641 static long mei_ioctl(struct file *file, unsigned int cmd, unsigned long data)
644 	struct mei_cl *cl = file->private_data;
683 			rets = mei_ioctl_connect_vtag(file, cl_uuid, props,
686 			rets = mei_ioctl_connect_client(file, cl_uuid, props);
725 		rets = mei_ioctl_connect_vtag(file, cl_uuid, props, vtag);
747 		rets = mei_ioctl_client_notify_request(file, notify_req);
752 		rets = mei_ioctl_client_notify_get(file, &notify_get);
778  * @file: pointer to file structure
783 static __poll_t mei_poll(struct file *file, poll_table *wait)
786 	struct mei_cl *cl = file->private_data;
807 		poll_wait(file, &cl->ev_wait, wait);
813 		poll_wait(file, &cl->rx_wait, wait);
815 		if (mei_cl_read_cb(cl, file))
818 			mei_cl_read_start(cl, mei_cl_mtu(cl), file);
822 		poll_wait(file, &cl->tx_wait, wait);
856  * @fp:       pointer to file structure
863 static int mei_fsync(struct file *fp, loff_t start, loff_t end, int datasync)
906  * @fd: file descriptor
907  * @file: pointer to file structure
914 static int mei_fasync(int fd, struct file *file, int band)
917 	struct mei_cl *cl = file->private_data;
922 	return fasync_helper(fd, file, band, &cl->ev_async);
1107  * mei_set_devstate: set to new device state and notify sysfs file.
1166  * file operations structure will be used for mei char device.