*
* Copyright (C) IBM Corporation, 2004
*
- * Author: Max Asböck <amax@us.ibm.com>
+ * Author: Max Asböck <amax@us.ibm.com>
*
*/
/*
- * Parts of this code are based on an article by Jonathan Corbet
+ * Parts of this code are based on an article by Jonathan Corbet
* that appeared in Linux Weekly News.
*/
* | |-- event
* | |-- reverse_heartbeat
* | `-- remote_video
- * | |-- connected
* | |-- depth
- * | |-- events
* | |-- height
* | `-- width
* .
* |-- event
* |-- reverse_heartbeat
* `-- remote_video
- * |-- connected
* |-- depth
- * |-- events
* |-- height
* `-- width
*
* For each service processor the following files are created:
*
* command: execute dot commands
- * write: execute a dot command on the service processor
- * read: return the result of a previously executed dot command
+ * write: execute a dot command on the service processor
+ * read: return the result of a previously executed dot command
*
* events: listen for service processor events
- * read: sleep (interruptible) until an event occurs
+ * read: sleep (interruptible) until an event occurs
* write: wakeup sleeping event listener
*
* reverse_heartbeat: send a heartbeat to the service processor
- * read: sleep (interruptible) until the reverse heartbeat fails
+ * read: sleep (interruptible) until the reverse heartbeat fails
* write: wakeup sleeping heartbeat listener
*
* remote_video/width
* remote_video/height
* remote_video/width: control remote display settings
- * write: set value
- * read: read value
- *
- * remote_video/connected
- * read: return "1" if web browser VNC java applet is connected,
- * "0" otherwise
- *
- * remote_video/events
- * read: sleep until a remote mouse or keyboard event occurs, then return
- * then event.
+ * write: set value
+ * read: read value
*/
#include <linux/fs.h>
static int ibmasmfs_fill_super (struct super_block *sb, void *data, int silent);
-static struct super_block *ibmasmfs_get_super(struct file_system_type *fst,
- int flags, const char *name, void *data)
+static int ibmasmfs_get_super(struct file_system_type *fst,
+ int flags, const char *name, void *data,
+ struct vfsmount *mnt)
{
- return get_sb_single(fst, flags, data, ibmasmfs_fill_super);
+ return get_sb_single(fst, flags, data, ibmasmfs_fill_super, mnt);
}
static struct super_operations ibmasmfs_s_ops = {
.drop_inode = generic_delete_inode,
};
-static struct file_operations *ibmasmfs_dir_ops = &simple_dir_operations;
+static const struct file_operations *ibmasmfs_dir_ops = &simple_dir_operations;
static struct file_system_type ibmasmfs_type = {
.owner = THIS_MODULE,
if (ret) {
ret->i_mode = mode;
- ret->i_uid = ret->i_gid = 0;
- ret->i_blksize = PAGE_CACHE_SIZE;
- ret->i_blocks = 0;
ret->i_atime = ret->i_mtime = ret->i_ctime = CURRENT_TIME;
}
return ret;
static struct dentry *ibmasmfs_create_file (struct super_block *sb,
struct dentry *parent,
- const char *name,
- struct file_operations *fops,
+ const char *name,
+ const struct file_operations *fops,
void *data,
int mode)
{
}
inode->i_fop = fops;
- inode->u.generic_ip = data;
+ inode->i_private = data;
d_add(dentry, inode);
return dentry;
{
struct ibmasmfs_command_data *command_data;
- if (!inode->u.generic_ip)
+ if (!inode->i_private)
return -ENODEV;
command_data = kmalloc(sizeof(struct ibmasmfs_command_data), GFP_KERNEL);
return -ENOMEM;
command_data->command = NULL;
- command_data->sp = inode->u.generic_ip;
+ command_data->sp = inode->i_private;
file->private_data = command_data;
return 0;
}
struct ibmasmfs_command_data *command_data = file->private_data;
if (command_data->command)
- command_put(command_data->command);
+ command_put(command_data->command);
kfree(command_data);
return 0;
if (command_data->command)
return -EAGAIN;
- cmd = ibmasm_new_command(count);
+ cmd = ibmasm_new_command(command_data->sp, count);
if (!cmd)
return -ENOMEM;
static int event_file_open(struct inode *inode, struct file *file)
{
struct ibmasmfs_event_data *event_data;
- struct service_processor *sp;
+ struct service_processor *sp;
- if (!inode->u.generic_ip)
+ if (!inode->i_private)
return -ENODEV;
- sp = inode->u.generic_ip;
+ sp = inode->i_private;
event_data = kmalloc(sizeof(struct ibmasmfs_event_data), GFP_KERNEL);
if (!event_data)
{
struct ibmasmfs_heartbeat_data *rhbeat;
- if (!inode->u.generic_ip)
+ if (!inode->i_private)
return -ENODEV;
rhbeat = kmalloc(sizeof(struct ibmasmfs_heartbeat_data), GFP_KERNEL);
if (!rhbeat)
return -ENOMEM;
- rhbeat->sp = (struct service_processor *)inode->u.generic_ip;
+ rhbeat->sp = inode->i_private;
rhbeat->active = 0;
ibmasm_init_reverse_heartbeat(rhbeat->sp, &rhbeat->heartbeat);
file->private_data = rhbeat;
static int remote_settings_file_open(struct inode *inode, struct file *file)
{
- file->private_data = inode->u.generic_ip;
+ file->private_data = inode->i_private;
return 0;
}
if (*offset != 0)
return 0;
- buff = kmalloc (count + 1, GFP_KERNEL);
+ buff = kzalloc (count + 1, GFP_KERNEL);
if (!buff)
return -ENOMEM;
- memset(buff, 0x0, count + 1);
if (copy_from_user(buff, ubuff, count)) {
kfree(buff);
return -EFAULT;
}
-
+
value = simple_strtoul(buff, NULL, 10);
writel(value, address);
kfree(buff);
return count;
}
-static int remote_event_file_open(struct inode *inode, struct file *file)
-{
- struct service_processor *sp;
- unsigned long flags;
- struct remote_queue *q;
-
- file->private_data = inode->u.generic_ip;
- sp = file->private_data;
- q = &sp->remote_queue;
-
- /* allow only one event reader */
- spin_lock_irqsave(&sp->lock, flags);
- if (q->open) {
- spin_unlock_irqrestore(&sp->lock, flags);
- return -EBUSY;
- }
- q->open = 1;
- spin_unlock_irqrestore(&sp->lock, flags);
-
- enable_mouse_interrupts(sp);
-
- return 0;
-}
-
-static int remote_event_file_close(struct inode *inode, struct file *file)
-{
- struct service_processor *sp = file->private_data;
-
- disable_mouse_interrupts(sp);
- wake_up_interruptible(&sp->remote_queue.wait);
- sp->remote_queue.open = 0;
-
- return 0;
-}
-
-static ssize_t remote_event_file_read(struct file *file, char __user *buf, size_t count, loff_t *offset)
-{
- struct service_processor *sp = file->private_data;
- struct remote_queue *q = &sp->remote_queue;
- size_t data_size;
- struct remote_event *reader = q->reader;
- size_t num_events;
-
- if (*offset < 0)
- return -EINVAL;
- if (count == 0 || count > 1024)
- return 0;
- if (*offset != 0)
- return 0;
-
- if (wait_event_interruptible(q->wait, q->reader != q->writer))
- return -ERESTARTSYS;
-
- /* only get multiples of struct remote_event */
- num_events = min((count/sizeof(struct remote_event)), ibmasm_events_available(q));
- if (!num_events)
- return 0;
-
- data_size = num_events * sizeof(struct remote_event);
-
- if (copy_to_user(buf, reader, data_size))
- return -EFAULT;
-
- ibmasm_advance_reader(q, num_events);
-
- return data_size;
-}
-
-
-static struct file_operations command_fops = {
+static const struct file_operations command_fops = {
.open = command_file_open,
.release = command_file_close,
.read = command_file_read,
.write = command_file_write,
};
-static struct file_operations event_fops = {
+static const struct file_operations event_fops = {
.open = event_file_open,
.release = event_file_close,
.read = event_file_read,
.write = event_file_write,
};
-static struct file_operations r_heartbeat_fops = {
+static const struct file_operations r_heartbeat_fops = {
.open = r_heartbeat_file_open,
.release = r_heartbeat_file_close,
.read = r_heartbeat_file_read,
.write = r_heartbeat_file_write,
};
-static struct file_operations remote_settings_fops = {
+static const struct file_operations remote_settings_fops = {
.open = remote_settings_file_open,
.release = remote_settings_file_close,
.read = remote_settings_file_read,
.write = remote_settings_file_write,
};
-static struct file_operations remote_event_fops = {
- .open = remote_event_file_open,
- .release = remote_event_file_close,
- .read = remote_event_file_read,
-};
-
static void ibmasmfs_create_files (struct super_block *sb, struct dentry *root)
{
ibmasmfs_create_file(sb, remote_dir, "width", &remote_settings_fops, (void *)display_width(sp), S_IRUSR|S_IWUSR);
ibmasmfs_create_file(sb, remote_dir, "height", &remote_settings_fops, (void *)display_height(sp), S_IRUSR|S_IWUSR);
ibmasmfs_create_file(sb, remote_dir, "depth", &remote_settings_fops, (void *)display_depth(sp), S_IRUSR|S_IWUSR);
- ibmasmfs_create_file(sb, remote_dir, "connected", &remote_settings_fops, (void *)vnc_status(sp), S_IRUSR);
- ibmasmfs_create_file(sb, remote_dir, "events", &remote_event_fops, (void *)sp, S_IRUSR);
}
}