Release 4.14 arch/mips/lasat/interrupt.c
/*
* Carsten Langgaard, carstenl@mips.com
* Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved.
*
* This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation.
*
* This program is distributed in the hope 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, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
* Routines for generic manipulation of the interrupts found on the
* Lasat boards.
*/
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <asm/irq_cpu.h>
#include <asm/lasat/lasat.h>
#include <asm/lasat/lasatint.h>
#include <irq.h>
static volatile int *lasat_int_status;
static volatile int *lasat_int_mask;
static volatile int lasat_int_mask_shift;
void disable_lasat_irq(struct irq_data *d)
{
unsigned int irq_nr = d->irq - LASAT_IRQ_BASE;
*lasat_int_mask &= ~(1 << irq_nr) << lasat_int_mask_shift;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Brian Murphy | 18 | 56.25% | 1 | 33.33% |
| Thomas Gleixner | 12 | 37.50% | 1 | 33.33% |
| Thomas Horsten | 2 | 6.25% | 1 | 33.33% |
| Total | 32 | 100.00% | 3 | 100.00% |
void enable_lasat_irq(struct irq_data *d)
{
unsigned int irq_nr = d->irq - LASAT_IRQ_BASE;
*lasat_int_mask |= (1 << irq_nr) << lasat_int_mask_shift;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Brian Murphy | 17 | 54.84% | 1 | 33.33% |
| Thomas Gleixner | 12 | 38.71% | 1 | 33.33% |
| Thomas Horsten | 2 | 6.45% | 1 | 33.33% |
| Total | 31 | 100.00% | 3 | 100.00% |
static struct irq_chip lasat_irq_type = {
.name = "Lasat",
.irq_mask = disable_lasat_irq,
.irq_unmask = enable_lasat_irq,
};
static inline int ls1bit32(unsigned int x)
{
int b = 31, s;
s = 16; if (x << 16 == 0) s = 0; b -= s; x <<= s;
s = 8; if (x << 8 == 0) s = 0; b -= s; x <<= s;
s = 4; if (x << 4 == 0) s = 0; b -= s; x <<= s;
s = 2; if (x << 2 == 0) s = 0; b -= s; x <<= s;
s = 1; if (x << 1 == 0) s = 0; b -= s;
return b;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Brian Murphy | 137 | 100.00% | 1 | 100.00% |
| Total | 137 | 100.00% | 1 | 100.00% |
static unsigned long (*get_int_status)(void);
static unsigned long get_int_status_100(void)
{
return *lasat_int_status & *lasat_int_mask;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Brian Murphy | 16 | 100.00% | 1 | 100.00% |
| Total | 16 | 100.00% | 1 | 100.00% |
static unsigned long get_int_status_200(void)
{
unsigned long int_status;
int_status = *lasat_int_status;
int_status &= (int_status >> LASATINT_MASK_SHIFT_200) & 0xffff;
return int_status;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Brian Murphy | 31 | 100.00% | 1 | 100.00% |
| Total | 31 | 100.00% | 1 | 100.00% |
asmlinkage void plat_irq_dispatch(void)
{
unsigned long int_status;
unsigned int cause = read_c0_cause();
int irq;
if (cause & CAUSEF_IP7) { /* R4000 count / compare IRQ */
do_IRQ(7);
return;
}
int_status = get_int_status();
/* if int_status == 0, then the interrupt has already been cleared */
if (int_status) {
irq = LASAT_IRQ_BASE + ls1bit32(int_status);
do_IRQ(irq);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Brian Murphy | 60 | 95.24% | 1 | 33.33% |
| Ralf Bächle | 2 | 3.17% | 1 | 33.33% |
| Yoichi Yuasa | 1 | 1.59% | 1 | 33.33% |
| Total | 63 | 100.00% | 3 | 100.00% |
static struct irqaction cascade = {
.handler = no_action,
.name = "cascade",
.flags = IRQF_NO_THREAD,
};
void __init arch_init_irq(void)
{
int i;
if (IS_LASAT_200()) {
lasat_int_status = (void *)LASAT_INT_STATUS_REG_200;
lasat_int_mask = (void *)LASAT_INT_MASK_REG_200;
lasat_int_mask_shift = LASATINT_MASK_SHIFT_200;
get_int_status = get_int_status_200;
*lasat_int_mask &= 0xffff;
} else {
lasat_int_status = (void *)LASAT_INT_STATUS_REG_100;
lasat_int_mask = (void *)LASAT_INT_MASK_REG_100;
lasat_int_mask_shift = LASATINT_MASK_SHIFT_100;
get_int_status = get_int_status_100;
*lasat_int_mask = 0;
}
mips_cpu_irq_init();
for (i = LASAT_IRQ_BASE; i <= LASAT_IRQ_END; i++)
irq_set_chip_and_handler(i, &lasat_irq_type, handle_level_irq);
setup_irq(LASAT_CASCADE_IRQ, &cascade);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Brian Murphy | 81 | 71.68% | 1 | 20.00% |
| Thomas Bogendoerfer | 18 | 15.93% | 1 | 20.00% |
| Yoichi Yuasa | 10 | 8.85% | 1 | 20.00% |
| Ralf Bächle | 3 | 2.65% | 1 | 20.00% |
| Thomas Gleixner | 1 | 0.88% | 1 | 20.00% |
| Total | 113 | 100.00% | 5 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Brian Murphy | 424 | 82.01% | 1 | 12.50% |
| Yoichi Yuasa | 30 | 5.80% | 1 | 12.50% |
| Thomas Gleixner | 27 | 5.22% | 2 | 25.00% |
| Thomas Bogendoerfer | 20 | 3.87% | 1 | 12.50% |
| Ralf Bächle | 7 | 1.35% | 1 | 12.50% |
| Wu Zhangjin | 5 | 0.97% | 1 | 12.50% |
| Thomas Horsten | 4 | 0.77% | 1 | 12.50% |
| Total | 517 | 100.00% | 8 | 100.00% |
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