78 lines
2.1 KiB
C
78 lines
2.1 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2000, 2001, 2004 MIPS Technologies, Inc.
|
||
|
|
* Copyright (C) 2001 Ralf Baechle
|
||
|
|
* Copyright (C) 2010 PMC-Sierra, Inc.
|
||
|
|
*
|
||
|
|
* VSMP support for MSP platforms . Derived from malta vsmp support.
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
#include <linux/smp.h>
|
||
|
|
#include <linux/interrupt.h>
|
||
|
|
|
||
|
|
#ifdef CONFIG_MIPS_MT_SMP
|
||
|
|
#define MIPS_CPU_IPI_RESCHED_IRQ 0 /* SW int 0 for resched */
|
||
|
|
#define MIPS_CPU_IPI_CALL_IRQ 1 /* SW int 1 for call */
|
||
|
|
|
||
|
|
|
||
|
|
static void ipi_resched_dispatch(void)
|
||
|
|
{
|
||
|
|
do_IRQ(MIPS_CPU_IPI_RESCHED_IRQ);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void ipi_call_dispatch(void)
|
||
|
|
{
|
||
|
|
do_IRQ(MIPS_CPU_IPI_CALL_IRQ);
|
||
|
|
}
|
||
|
|
|
||
|
|
static irqreturn_t ipi_resched_interrupt(int irq, void *dev_id)
|
||
|
|
{
|
||
|
|
return IRQ_HANDLED;
|
||
|
|
}
|
||
|
|
|
||
|
|
static irqreturn_t ipi_call_interrupt(int irq, void *dev_id)
|
||
|
|
{
|
||
|
|
generic_smp_call_function_interrupt();
|
||
|
|
|
||
|
|
return IRQ_HANDLED;
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct irqaction irq_resched = {
|
||
|
|
.handler = ipi_resched_interrupt,
|
||
|
|
.flags = IRQF_PERCPU,
|
||
|
|
.name = "IPI_resched"
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct irqaction irq_call = {
|
||
|
|
.handler = ipi_call_interrupt,
|
||
|
|
.flags = IRQF_PERCPU,
|
||
|
|
.name = "IPI_call"
|
||
|
|
};
|
||
|
|
|
||
|
|
void __init arch_init_ipiirq(int irq, struct irqaction *action)
|
||
|
|
{
|
||
|
|
setup_irq(irq, action);
|
||
|
|
irq_set_handler(irq, handle_percpu_irq);
|
||
|
|
}
|
||
|
|
|
||
|
|
void __init msp_vsmp_int_init(void)
|
||
|
|
{
|
||
|
|
set_vi_handler(MIPS_CPU_IPI_RESCHED_IRQ, ipi_resched_dispatch);
|
||
|
|
set_vi_handler(MIPS_CPU_IPI_CALL_IRQ, ipi_call_dispatch);
|
||
|
|
arch_init_ipiirq(MIPS_CPU_IPI_RESCHED_IRQ, &irq_resched);
|
||
|
|
arch_init_ipiirq(MIPS_CPU_IPI_CALL_IRQ, &irq_call);
|
||
|
|
}
|
||
|
|
#endif /* CONFIG_MIPS_MT_SMP */
|