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https://github.com/xen-project/xen.git
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Jan Beulich
e267224227
This reverts commit610b4eda2c. It's not useful withouted7e33747d, which got reverted already.
55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
/******************************************************************************
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* keyhandler.h
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*
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* We keep an array of 'handlers' for each key code between 0 and 255;
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* this is intended to allow very simple debugging routines (toggle
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* debug flag, dump registers, reboot, etc) to be hooked in in a slightly
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* nicer fashion than just editing the serial/keyboard drivers.
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*/
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#ifndef __XEN_KEYHANDLER_H__
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#define __XEN_KEYHANDLER_H__
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#include <xen/types.h>
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/*
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* Callback type for keyhander.
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*
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* Called in softirq context with interrupts enabled.
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*/
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typedef void (keyhandler_fn_t)(unsigned char key);
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/*
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* Callback type for irq_keyhandler.
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*
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* Called in hardirq context with interrupts disabled.
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*/
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struct cpu_user_regs;
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typedef void (irq_keyhandler_fn_t)(unsigned char key,
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struct cpu_user_regs *regs);
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/* Initialize keytable with default handlers. */
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void initialize_keytable(void);
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/*
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* Regiser a callback handler for key @key for either plain or irq context.
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* If @diagnostic is set, the handler will be included in the "dump
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* everything" keyhandler.
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*/
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void register_keyhandler(unsigned char key,
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keyhandler_fn_t *fn,
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const char *desc,
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bool_t diagnostic);
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void register_irq_keyhandler(unsigned char key,
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irq_keyhandler_fn_t *fn,
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const char *desc,
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bool_t diagnostic);
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/* Inject a keypress into the key-handling subsystem. */
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extern void handle_keypress(unsigned char key, struct cpu_user_regs *regs);
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/* Scratch space is available for use of any keyhandler. */
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extern char keyhandler_scratch[1024];
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#endif /* __XEN_KEYHANDLER_H__ */
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