From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/arch/sparc/prom/p1275.c | 54 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 kernel/arch/sparc/prom/p1275.c (limited to 'kernel/arch/sparc/prom/p1275.c') diff --git a/kernel/arch/sparc/prom/p1275.c b/kernel/arch/sparc/prom/p1275.c new file mode 100644 index 000000000..545d8bb79 --- /dev/null +++ b/kernel/arch/sparc/prom/p1275.c @@ -0,0 +1,54 @@ +/* + * p1275.c: Sun IEEE 1275 PROM low level interface routines + * + * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) + */ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +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); +} + +void prom_cif_init(void *cif_handler, void *cif_stack) +{ + p1275buf.prom_cif_handler = (void (*)(long *))cif_handler; +} -- cgit 1.2.3-korg