diff options
Diffstat (limited to 'drivers/char/hvc_console.h')
| -rw-r--r-- | drivers/char/hvc_console.h | 35 |
1 files changed, 31 insertions, 4 deletions
diff --git a/drivers/char/hvc_console.h b/drivers/char/hvc_console.h index 42ffb17e15df..d9ce10915625 100644 --- a/drivers/char/hvc_console.h +++ b/drivers/char/hvc_console.h @@ -26,6 +26,7 @@ #ifndef HVC_CONSOLE_H #define HVC_CONSOLE_H +#include <linux/kref.h> /* * This is the max number of console adapters that can/will be found as @@ -42,24 +43,50 @@ */ #define HVC_ALLOC_TTY_ADAPTERS 8 +struct hvc_struct { + spinlock_t lock; + int index; + struct tty_struct *tty; + unsigned int count; + int do_wakeup; + char *outbuf; + int outbuf_size; + int n_outbuf; + uint32_t vtermno; + struct hv_ops *ops; + int irq_requested; + int data; + struct list_head next; + struct kref kref; /* ref count & hvc_struct lifetime */ +}; /* implemented by a low level driver */ struct hv_ops { int (*get_chars)(uint32_t vtermno, char *buf, int count); int (*put_chars)(uint32_t vtermno, const char *buf, int count); -}; -struct hvc_struct; + /* Callbacks for notification. Called in open and close */ + int (*notifier_add)(struct hvc_struct *hp, int irq); + void (*notifier_del)(struct hvc_struct *hp, int irq); +}; /* Register a vterm and a slot index for use as a console (console_init) */ extern int hvc_instantiate(uint32_t vtermno, int index, struct hv_ops *ops); /* register a vterm for hvc tty operation (module_init or hotplug add) */ -extern struct hvc_struct * __devinit hvc_alloc(uint32_t vtermno, int irq, +extern struct hvc_struct * __devinit hvc_alloc(uint32_t vtermno, int data, struct hv_ops *ops, int outbuf_size); -/* remove a vterm from hvc tty operation (modele_exit or hotplug remove) */ +/* remove a vterm from hvc tty operation (module_exit or hotplug remove) */ extern int __devexit hvc_remove(struct hvc_struct *hp); +/* data available */ +int hvc_poll(struct hvc_struct *hp); +void hvc_kick(void); + +/* default notifier for irq based notification */ +extern int notifier_add_irq(struct hvc_struct *hp, int data); +extern void notifier_del_irq(struct hvc_struct *hp, int data); + #if defined(CONFIG_XMON) && defined(CONFIG_SMP) #include <asm/xmon.h> |