xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

nios2: Interrupt handling

Browse Source 
This patch adds the support for IRQ handling.

Signed-off-by: Ley Foon Tan <lftan@altera.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Ley Foon Tan
2014-11-06 15:19:52 +08:00
parent c983e92fcb
commit f27ffc751c
3 changed files with 193 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
arch/nios2/include/asm/irq.h Normal file
View File

@@ -0,0 +1,28 @@
/*
* Copyright (C) 2013 Altera Corporation
* Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
*
* 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 2 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/>.
*
*/
#ifndef _ASM_NIOS2_IRQ_H
#define _ASM_NIOS2_IRQ_H
#define NIOS2_CPU_NR_IRQS 32
#include <asm-generic/irq.h>
#include <linux/irqdomain.h>
#endif

72
arch/nios2/include/asm/irqflags.h Normal file
View File

@@ -0,0 +1,72 @@
/*
* Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
*
* 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 2 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/>.
*
*/
#ifndef _ASM_IRQFLAGS_H
#define _ASM_IRQFLAGS_H
#include <asm/registers.h>
static inline unsigned long arch_local_save_flags(void)
{
return RDCTL(CTL_STATUS);
}
/*
* This will restore ALL status register flags, not only the interrupt
* mask flag.
*/
static inline void arch_local_irq_restore(unsigned long flags)
{
WRCTL(CTL_STATUS, flags);
}
static inline void arch_local_irq_disable(void)
{
unsigned long flags;
flags = arch_local_save_flags();
arch_local_irq_restore(flags & ~STATUS_PIE);
}
static inline void arch_local_irq_enable(void)
{
unsigned long flags;
flags = arch_local_save_flags();
arch_local_irq_restore(flags | STATUS_PIE);
}
static inline int arch_irqs_disabled_flags(unsigned long flags)
{
return (flags & STATUS_PIE) == 0;
}
static inline int arch_irqs_disabled(void)
{
return arch_irqs_disabled_flags(arch_local_save_flags());
}
static inline unsigned long arch_local_irq_save(void)
{
unsigned long flags;
flags = arch_local_save_flags();
arch_local_irq_restore(flags & ~STATUS_PIE);
return flags;
}
#endif /* _ASM_IRQFLAGS_H */