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14#ifndef HVC_CONSOLE_H
15#define HVC_CONSOLE_H
16#include <linux/kref.h>
17#include <linux/tty.h>
18#include <linux/spinlock.h>
19
20
21
22
23
24
25#define MAX_NR_HVC_CONSOLES 16
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31
32
33#define HVC_ALLOC_TTY_ADAPTERS 8
34
35struct hvc_struct {
36 struct tty_port port;
37 spinlock_t lock;
38 int index;
39 int do_wakeup;
40 char *outbuf;
41 int outbuf_size;
42 int n_outbuf;
43 uint32_t vtermno;
44 const struct hv_ops *ops;
45 int irq_requested;
46 int data;
47 struct winsize ws;
48 struct work_struct tty_resize;
49 struct list_head next;
50 unsigned long flags;
51};
52
53
54struct hv_ops {
55 int (*get_chars)(uint32_t vtermno, char *buf, int count);
56 int (*put_chars)(uint32_t vtermno, const char *buf, int count);
57 int (*flush)(uint32_t vtermno, bool wait);
58
59
60 int (*notifier_add)(struct hvc_struct *hp, int irq);
61 void (*notifier_del)(struct hvc_struct *hp, int irq);
62 void (*notifier_hangup)(struct hvc_struct *hp, int irq);
63
64
65 int (*tiocmget)(struct hvc_struct *hp);
66 int (*tiocmset)(struct hvc_struct *hp, unsigned int set, unsigned int clear);
67
68
69 void (*dtr_rts)(struct hvc_struct *hp, int raise);
70};
71
72
73extern int hvc_instantiate(uint32_t vtermno, int index,
74 const struct hv_ops *ops);
75
76
77extern struct hvc_struct * hvc_alloc(uint32_t vtermno, int data,
78 const struct hv_ops *ops, int outbuf_size);
79
80extern int hvc_remove(struct hvc_struct *hp);
81
82
83int hvc_poll(struct hvc_struct *hp);
84void hvc_kick(void);
85
86
87extern void __hvc_resize(struct hvc_struct *hp, struct winsize ws);
88
89static inline void hvc_resize(struct hvc_struct *hp, struct winsize ws)
90{
91 unsigned long flags;
92
93 spin_lock_irqsave(&hp->lock, flags);
94 __hvc_resize(hp, ws);
95 spin_unlock_irqrestore(&hp->lock, flags);
96}
97
98
99extern int notifier_add_irq(struct hvc_struct *hp, int data);
100extern void notifier_del_irq(struct hvc_struct *hp, int data);
101extern void notifier_hangup_irq(struct hvc_struct *hp, int data);
102
103
104#if defined(CONFIG_XMON) && defined(CONFIG_SMP)
105#include <asm/xmon.h>
106#else
107static inline int cpus_are_in_xmon(void)
108{
109 return 0;
110}
111#endif
112
113#endif
114