Release 4.14 arch/sh/kernel/cpu/irq/imask.c
// SPDX-License-Identifier: GPL-2.0
/*
* arch/sh/kernel/cpu/irq/imask.c
*
* Copyright (C) 1999, 2000 Niibe Yutaka
*
* Simple interrupt handling using IMASK of SR register.
*
*/
/* NOTE: Will not work on level 15 */
#include <linux/ptrace.h>
#include <linux/errno.h>
#include <linux/kernel_stat.h>
#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/bitops.h>
#include <linux/spinlock.h>
#include <linux/cache.h>
#include <linux/irq.h>
#include <linux/bitmap.h>
#include <asm/irq.h>
/* Bitmap of IRQ masked */
#define IMASK_PRIORITY 15
static DECLARE_BITMAP(imask_mask, IMASK_PRIORITY);
static int interrupt_priority;
static inline void set_interrupt_registers(int ip)
{
unsigned long __dummy;
asm volatile(
#ifdef CONFIG_CPU_HAS_SR_RB
"ldc %2, r6_bank\n\t"
#endif
"stc sr, %0\n\t"
"and #0xf0, %0\n\t"
"shlr2 %0\n\t"
"cmp/eq #0x3c, %0\n\t"
"bt/s 1f ! CLI-ed\n\t"
" stc sr, %0\n\t"
"and %1, %0\n\t"
"or %2, %0\n\t"
"ldc %0, sr\n"
"1:"
: "=&z" (__dummy)
: "r" (~0xf0), "r" (ip << 4)
: "t");
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Paul Mundt | 16 | 66.67% | 2 | 66.67% |
| Yoshinori Sato | 8 | 33.33% | 1 | 33.33% |
| Total | 24 | 100.00% | 3 | 100.00% |
static void mask_imask_irq(struct irq_data *data)
{
unsigned int irq = data->irq;
clear_bit(irq, imask_mask);
if (interrupt_priority < IMASK_PRIORITY - irq)
interrupt_priority = IMASK_PRIORITY - irq;
set_interrupt_registers(interrupt_priority);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Paul Mundt | 45 | 100.00% | 3 | 100.00% |
| Total | 45 | 100.00% | 3 | 100.00% |
static void unmask_imask_irq(struct irq_data *data)
{
unsigned int irq = data->irq;
set_bit(irq, imask_mask);
interrupt_priority = IMASK_PRIORITY -
find_first_zero_bit(imask_mask, IMASK_PRIORITY);
set_interrupt_registers(interrupt_priority);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Paul Mundt | 42 | 100.00% | 3 | 100.00% |
| Total | 42 | 100.00% | 3 | 100.00% |
static struct irq_chip imask_irq_chip = {
.name = "SR.IMASK",
.irq_mask = mask_imask_irq,
.irq_unmask = unmask_imask_irq,
.irq_mask_ack = mask_imask_irq,
};
void make_imask_irq(unsigned int irq)
{
irq_set_chip_and_handler_name(irq, &imask_irq_chip, handle_level_irq,
"level");
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Paul Mundt | 20 | 95.24% | 2 | 66.67% |
| Thomas Gleixner | 1 | 4.76% | 1 | 33.33% |
| Total | 21 | 100.00% | 3 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Paul Mundt | 206 | 94.50% | 4 | 44.44% |
| Yoshinori Sato | 8 | 3.67% | 1 | 11.11% |
| Thomas Gleixner | 2 | 0.92% | 2 | 22.22% |
| Adrian Bunk | 1 | 0.46% | 1 | 11.11% |
| Greg Kroah-Hartman | 1 | 0.46% | 1 | 11.11% |
| Total | 218 | 100.00% | 9 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.