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/*
* Copyright (c) 2014 Richard Braun.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*
* Cross-processor function calls.
*
* This module provides the ability to run functions, called cross-calls,
* on specific processors.
*/
#ifndef _KERN_XCALL_H
#define _KERN_XCALL_H
/*
* Type for cross-call functions.
*/
typedef void (*xcall_fn_t)(void *arg);
/*
* Run the given cross-call function on a specific processor.
*
* The operation is completely synchronous, returning only when the function
* has finished running on the target processor, with the side effects of
* the function visible.
*
* The function is run in interrupt context. Interrupts must be enabled
* when calling this function.
*/
void xcall_call(xcall_fn_t fn, void *arg, unsigned int cpu);
/*
* Report a cross-call interrupt from a remote processor.
*
* Called from interrupt context.
*/
void xcall_intr(void);
#endif /* _KERN_XCALL_H */
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