Release 4.14 arch/sparc/prom/p1275.c

// SPDX-License-Identifier: GPL-2.0
/*
 * p1275.c: Sun IEEE 1275 PROM low level interface routines
 *
 * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
 */

#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/smp.h>
#include <linux/string.h>
#include <linux/spinlock.h>
#include <linux/irqflags.h>

#include <asm/openprom.h>
#include <asm/oplib.h>
#include <asm/spitfire.h>
#include <asm/pstate.h>
#include <asm/ldc.h>

struct {
	
long prom_callback;			/* 0x00 */
	
void (*prom_cif_handler)(long *);	/* 0x08 */

} p1275buf;

extern void prom_world(int);

extern void prom_cif_direct(unsigned long *args);
extern void prom_cif_callback(void);

/*
 * This provides SMP safety on the p1275buf.
 */

DEFINE_RAW_SPINLOCK(prom_entry_lock);



void p1275_cmd_direct(unsigned long *args)
{
	unsigned long flags;

	local_save_flags(flags);
	local_irq_restore((unsigned long)PIL_NMI);
	raw_spin_lock(&prom_entry_lock);

	prom_world(1);
	prom_cif_direct(args);
	prom_world(0);

	raw_spin_unlock(&prom_entry_lock);
	local_irq_restore(flags);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
26
43.33%
3
37.50%
David S. Miller
24
40.00%
3
37.50%
Linus Torvalds
6
10.00%
1
12.50%
David Howells
4
6.67%
1
12.50%
Total
60
100.00%
8
100.00%



void prom_cif_init(void *cif_handler, void *cif_stack)
{
	p1275buf.prom_cif_handler = (void (*)(long *))cif_handler;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
29
100.00%
2
100.00%
Total
29
100.00%
2
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
118
67.82%
9
47.37%
David S. Miller
41
23.56%
5
26.32%
Linus Torvalds
6
3.45%
1
5.26%
David Howells
4
2.30%
1
5.26%
Thomas Gleixner
3
1.72%
1
5.26%
Adrian Bunk
1
0.57%
1
5.26%
Greg Kroah-Hartman
1
0.57%
1
5.26%
Total
174
100.00%
19
100.00%
Directory: arch/sparc/prom

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