segment.c
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上传日期:2013-04-10
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- /* $Id: segment.c,v 1.7 2000/08/26 02:38:03 anton Exp $
- * segment.c: Prom routine to map segments in other contexts before
- * a standalone is completely mapped. This is for sun4 and
- * sun4c architectures only.
- *
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
- */
- #include <linux/types.h>
- #include <linux/kernel.h>
- #include <linux/sched.h>
- #include <asm/openprom.h>
- #include <asm/oplib.h>
- extern void restore_current(void);
- /* Set physical segment 'segment' at virtual address 'vaddr' in
- * context 'ctx'.
- */
- void
- prom_putsegment(int ctx, unsigned long vaddr, int segment)
- {
- unsigned long flags;
- spin_lock_irqsave(&prom_lock, flags);
- (*(romvec->pv_setctxt))(ctx, (char *) vaddr, segment);
- restore_current();
- spin_unlock_irqrestore(&prom_lock, flags);
- return;
- }