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-rw-r--r--arch/mips/au1000/Kconfig1
-rw-r--r--arch/mips/au1000/common/irq.c251
2 files changed, 133 insertions, 119 deletions
diff --git a/arch/mips/au1000/Kconfig b/arch/mips/au1000/Kconfig
index 29c95d97217..a23d4154da0 100644
--- a/arch/mips/au1000/Kconfig
+++ b/arch/mips/au1000/Kconfig
@@ -137,6 +137,7 @@ config SOC_AU1200
config SOC_AU1X00
bool
select 64BIT_PHYS_ADDR
+ select IRQ_CPU
select SYS_HAS_CPU_MIPS32_R1
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_APM_EMULATION
diff --git a/arch/mips/au1000/common/irq.c b/arch/mips/au1000/common/irq.c
index c00f308fd50..59e932a928d 100644
--- a/arch/mips/au1000/common/irq.c
+++ b/arch/mips/au1000/common/irq.c
@@ -1,11 +1,10 @@
/*
- * BRIEF MODULE DESCRIPTION
- * Au1000 interrupt routines.
- *
* Copyright 2001 MontaVista Software Inc.
* Author: MontaVista Software, Inc.
* ppopov@mvista.com or source@mvista.com
*
+ * Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org)
+ *
* 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
@@ -32,6 +31,7 @@
#include <linux/interrupt.h>
#include <linux/irq.h>
+#include <asm/irq_cpu.h>
#include <asm/mipsregs.h>
#include <asm/mach-au1x00/au1000.h>
#ifdef CONFIG_MIPS_PB1000
@@ -44,7 +44,7 @@
#define EXT_INTC1_REQ1 5 /* IP 5 */
#define MIPS_TIMER_IP 7 /* IP 7 */
-void (*board_init_irq)(void);
+void (*board_init_irq)(void) __initdata = NULL;
static DEFINE_SPINLOCK(irq_lock);
@@ -134,12 +134,14 @@ void restore_au1xxx_intctl(void)
inline void local_enable_irq(unsigned int irq_nr)
{
- if (irq_nr > AU1000_LAST_INTC0_INT) {
- au_writel(1 << (irq_nr - 32), IC1_MASKSET);
- au_writel(1 << (irq_nr - 32), IC1_WAKESET);
+ unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
+
+ if (bit >= 32) {
+ au_writel(1 << (bit - 32), IC1_MASKSET);
+ au_writel(1 << (bit - 32), IC1_WAKESET);
} else {
- au_writel(1 << irq_nr, IC0_MASKSET);
- au_writel(1 << irq_nr, IC0_WAKESET);
+ au_writel(1 << bit, IC0_MASKSET);
+ au_writel(1 << bit, IC0_WAKESET);
}
au_sync();
}
@@ -147,12 +149,14 @@ inline void local_enable_irq(unsigned int irq_nr)
inline void local_disable_irq(unsigned int irq_nr)
{
- if (irq_nr > AU1000_LAST_INTC0_INT) {
- au_writel(1 << (irq_nr - 32), IC1_MASKCLR);
- au_writel(1 << (irq_nr - 32), IC1_WAKECLR);
+ unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
+
+ if (bit >= 32) {
+ au_writel(1 << (bit - 32), IC1_MASKCLR);
+ au_writel(1 << (bit - 32), IC1_WAKECLR);
} else {
- au_writel(1 << irq_nr, IC0_MASKCLR);
- au_writel(1 << irq_nr, IC0_WAKECLR);
+ au_writel(1 << bit, IC0_MASKCLR);
+ au_writel(1 << bit, IC0_WAKECLR);
}
au_sync();
}
@@ -160,12 +164,14 @@ inline void local_disable_irq(unsigned int irq_nr)
static inline void mask_and_ack_rise_edge_irq(unsigned int irq_nr)
{
- if (irq_nr > AU1000_LAST_INTC0_INT) {
- au_writel(1 << (irq_nr - 32), IC1_RISINGCLR);
- au_writel(1 << (irq_nr - 32), IC1_MASKCLR);
+ unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
+
+ if (bit >= 32) {
+ au_writel(1 << (bit - 32), IC1_RISINGCLR);
+ au_writel(1 << (bit - 32), IC1_MASKCLR);
} else {
- au_writel(1 << irq_nr, IC0_RISINGCLR);
- au_writel(1 << irq_nr, IC0_MASKCLR);
+ au_writel(1 << bit, IC0_RISINGCLR);
+ au_writel(1 << bit, IC0_MASKCLR);
}
au_sync();
}
@@ -173,12 +179,14 @@ static inline void mask_and_ack_rise_edge_irq(unsigned int irq_nr)
static inline void mask_and_ack_fall_edge_irq(unsigned int irq_nr)
{
- if (irq_nr > AU1000_LAST_INTC0_INT) {
- au_writel(1 << (irq_nr - 32), IC1_FALLINGCLR);
- au_writel(1 << (irq_nr - 32), IC1_MASKCLR);
+ unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
+
+ if (bit >= 32) {
+ au_writel(1 << (bit - 32), IC1_FALLINGCLR);
+ au_writel(1 << (bit - 32), IC1_MASKCLR);
} else {
- au_writel(1 << irq_nr, IC0_FALLINGCLR);
- au_writel(1 << irq_nr, IC0_MASKCLR);
+ au_writel(1 << bit, IC0_FALLINGCLR);
+ au_writel(1 << bit, IC0_MASKCLR);
}
au_sync();
}
@@ -186,17 +194,20 @@ static inline void mask_and_ack_fall_edge_irq(unsigned int irq_nr)
static inline void mask_and_ack_either_edge_irq(unsigned int irq_nr)
{
- /* This may assume that we don't get interrupts from
+ unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
+
+ /*
+ * This may assume that we don't get interrupts from
* both edges at once, or if we do, that we don't care.
*/
- if (irq_nr > AU1000_LAST_INTC0_INT) {
- au_writel(1 << (irq_nr - 32), IC1_FALLINGCLR);
- au_writel(1 << (irq_nr - 32), IC1_RISINGCLR);
- au_writel(1 << (irq_nr - 32), IC1_MASKCLR);
+ if (bit >= 32) {
+ au_writel(1 << (bit - 32), IC1_FALLINGCLR);
+ au_writel(1 << (bit - 32), IC1_RISINGCLR);
+ au_writel(1 << (bit - 32), IC1_MASKCLR);
} else {
- au_writel(1 << irq_nr, IC0_FALLINGCLR);
- au_writel(1 << irq_nr, IC0_RISINGCLR);
- au_writel(1 << irq_nr, IC0_MASKCLR);
+ au_writel(1 << bit, IC0_FALLINGCLR);
+ au_writel(1 << bit, IC0_RISINGCLR);
+ au_writel(1 << bit, IC0_MASKCLR);
}
au_sync();
}
@@ -213,10 +224,8 @@ static inline void mask_and_ack_level_irq(unsigned int irq_nr)
au_sync();
}
#endif
- return;
}
-
static void end_irq(unsigned int irq_nr)
{
if (!(irq_desc[irq_nr].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
@@ -341,114 +350,118 @@ void startup_match20_interrupt(irq_handler_t handler)
}
#endif
-static void setup_local_irq(unsigned int irq_nr, int type, int int_req)
+static void __init setup_local_irq(unsigned int irq_nr, int type, int int_req)
{
- if (irq_nr > AU1000_MAX_INTR) return;
+ unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
+
+ if (irq_nr > AU1000_MAX_INTR)
+ return;
+
/* Config2[n], Config1[n], Config0[n] */
- if (irq_nr > AU1000_LAST_INTC0_INT) {
+ if (bit >= 32) {
switch (type) {
case INTC_INT_RISE_EDGE: /* 0:0:1 */
- au_writel(1 << (irq_nr - 32), IC1_CFG2CLR);
- au_writel(1 << (irq_nr - 32), IC1_CFG1CLR);
- au_writel(1 << (irq_nr - 32), IC1_CFG0SET);
+ au_writel(1 << (bit - 32), IC1_CFG2CLR);
+ au_writel(1 << (bit - 32), IC1_CFG1CLR);
+ au_writel(1 << (bit - 32), IC1_CFG0SET);
set_irq_chip(irq_nr, &rise_edge_irq_type);
break;
case INTC_INT_FALL_EDGE: /* 0:1:0 */
- au_writel(1 << (irq_nr - 32), IC1_CFG2CLR);
- au_writel(1 << (irq_nr - 32), IC1_CFG1SET);
- au_writel(1 << (irq_nr - 32), IC1_CFG0CLR);
+ au_writel(1 << (bit - 32), IC1_CFG2CLR);
+ au_writel(1 << (bit - 32), IC1_CFG1SET);
+ au_writel(1 << (bit - 32), IC1_CFG0CLR);
set_irq_chip(irq_nr, &fall_edge_irq_type);
break;
case INTC_INT_RISE_AND_FALL_EDGE: /* 0:1:1 */
- au_writel(1 << (irq_nr - 32), IC1_CFG2CLR);
- au_writel(1 << (irq_nr - 32), IC1_CFG1SET);
- au_writel(1 << (irq_nr - 32), IC1_CFG0SET);
+ au_writel(1 << (bit - 32), IC1_CFG2CLR);
+ au_writel(1 << (bit - 32), IC1_CFG1SET);
+ au_writel(1 << (bit - 32), IC1_CFG0SET);
set_irq_chip(irq_nr, &either_edge_irq_type);
break;
case INTC_INT_HIGH_LEVEL: /* 1:0:1 */
- au_writel(1 << (irq_nr - 32), IC1_CFG2SET);
- au_writel(1 << (irq_nr - 32), IC1_CFG1CLR);
- au_writel(1 << (irq_nr - 32), IC1_CFG0SET);
+ au_writel(1 << (bit - 32), IC1_CFG2SET);
+ au_writel(1 << (bit - 32), IC1_CFG1CLR);
+ au_writel(1 << (bit - 32), IC1_CFG0SET);
set_irq_chip(irq_nr, &level_irq_type);
break;
case INTC_INT_LOW_LEVEL: /* 1:1:0 */
- au_writel(1 << (irq_nr - 32), IC1_CFG2SET);
- au_writel(1 << (irq_nr - 32), IC1_CFG1SET);
- au_writel(1 << (irq_nr - 32), IC1_CFG0CLR);
+ au_writel(1 << (bit - 32), IC1_CFG2SET);
+ au_writel(1 << (bit - 32), IC1_CFG1SET);
+ au_writel(1 << (bit - 32), IC1_CFG0CLR);
set_irq_chip(irq_nr, &level_irq_type);
break;
case INTC_INT_DISABLED: /* 0:0:0 */
- au_writel(1 << (irq_nr - 32), IC1_CFG0CLR);
- au_writel(1 << (irq_nr - 32), IC1_CFG1CLR);
- au_writel(1 << (irq_nr - 32), IC1_CFG2CLR);
+ au_writel(1 << (bit - 32), IC1_CFG0CLR);
+ au_writel(1 << (bit - 32), IC1_CFG1CLR);
+ au_writel(1 << (bit - 32), IC1_CFG2CLR);
break;
default: /* disable the interrupt */
printk(KERN_WARNING "unexpected int type %d (irq %d)\n",
type, irq_nr);
- au_writel(1 << (irq_nr - 32), IC1_CFG0CLR);
- au_writel(1 << (irq_nr - 32), IC1_CFG1CLR);
- au_writel(1 << (irq_nr - 32), IC1_CFG2CLR);
+ au_writel(1 << (bit - 32), IC1_CFG0CLR);
+ au_writel(1 << (bit - 32), IC1_CFG1CLR);
+ au_writel(1 << (bit - 32), IC1_CFG2CLR);
return;
}
if (int_req) /* assign to interrupt request 1 */
- au_writel(1 << (irq_nr - 32), IC1_ASSIGNCLR);
+ au_writel(1 << (bit - 32), IC1_ASSIGNCLR);
else /* assign to interrupt request 0 */
- au_writel(1 << (irq_nr - 32), IC1_ASSIGNSET);
- au_writel(1 << (irq_nr - 32), IC1_SRCSET);
- au_writel(1 << (irq_nr - 32), IC1_MASKCLR);
- au_writel(1 << (irq_nr - 32), IC1_WAKECLR);
+ au_writel(1 << (bit - 32), IC1_ASSIGNSET);
+ au_writel(1 << (bit - 32), IC1_SRCSET);
+ au_writel(1 << (bit - 32), IC1_MASKCLR);
+ au_writel(1 << (bit - 32), IC1_WAKECLR);
} else {
switch (type) {
case INTC_INT_RISE_EDGE: /* 0:0:1 */
- au_writel(1 << irq_nr, IC0_CFG2CLR);
- au_writel(1 << irq_nr, IC0_CFG1CLR);
- au_writel(1 << irq_nr, IC0_CFG0SET);
+ au_writel(1 << bit, IC0_CFG2CLR);
+ au_writel(1 << bit, IC0_CFG1CLR);
+ au_writel(1 << bit, IC0_CFG0SET);
set_irq_chip(irq_nr, &rise_edge_irq_type);
break;
case INTC_INT_FALL_EDGE: /* 0:1:0 */
- au_writel(1 << irq_nr, IC0_CFG2CLR);
- au_writel(1 << irq_nr, IC0_CFG1SET);
- au_writel(1 << irq_nr, IC0_CFG0CLR);
+ au_writel(1 << bit, IC0_CFG2CLR);
+ au_writel(1 << bit, IC0_CFG1SET);
+ au_writel(1 << bit, IC0_CFG0CLR);
set_irq_chip(irq_nr, &fall_edge_irq_type);
break;
case INTC_INT_RISE_AND_FALL_EDGE: /* 0:1:1 */
- au_writel(1 << irq_nr, IC0_CFG2CLR);
- au_writel(1 << irq_nr, IC0_CFG1SET);
- au_writel(1 << irq_nr, IC0_CFG0SET);
+ au_writel(1 << bit, IC0_CFG2CLR);
+ au_writel(1 << bit, IC0_CFG1SET);
+ au_writel(1 << bit, IC0_CFG0SET);
set_irq_chip(irq_nr, &either_edge_irq_type);
break;
case INTC_INT_HIGH_LEVEL: /* 1:0:1 */
- au_writel(1 << irq_nr, IC0_CFG2SET);
- au_writel(1 << irq_nr, IC0_CFG1CLR);
- au_writel(1 << irq_nr, IC0_CFG0SET);
+ au_writel(1 << bit, IC0_CFG2SET);
+ au_writel(1 << bit, IC0_CFG1CLR);
+ au_writel(1 << bit, IC0_CFG0SET);
set_irq_chip(irq_nr, &level_irq_type);
break;
case INTC_INT_LOW_LEVEL: /* 1:1:0 */
- au_writel(1 << irq_nr, IC0_CFG2SET);
- au_writel(1 << irq_nr, IC0_CFG1SET);
- au_writel(1 << irq_nr, IC0_CFG0CLR);
+ au_writel(1 << bit, IC0_CFG2SET);
+ au_writel(1 << bit, IC0_CFG1SET);
+ au_writel(1 << bit, IC0_CFG0CLR);
set_irq_chip(irq_nr, &level_irq_type);
break;
case INTC_INT_DISABLED: /* 0:0:0 */
- au_writel(1 << irq_nr, IC0_CFG0CLR);
- au_writel(1 << irq_nr, IC0_CFG1CLR);
- au_writel(1 << irq_nr, IC0_CFG2CLR);
+ au_writel(1 << bit, IC0_CFG0CLR);
+ au_writel(1 << bit, IC0_CFG1CLR);
+ au_writel(1 << bit, IC0_CFG2CLR);
break;
default: /* disable the interrupt */
printk(KERN_WARNING "unexpected int type %d (irq %d)\n",
type, irq_nr);
- au_writel(1 << irq_nr, IC0_CFG0CLR);
- au_writel(1 << irq_nr, IC0_CFG1CLR);
- au_writel(1 << irq_nr, IC0_CFG2CLR);
+ au_writel(1 << bit, IC0_CFG0CLR);
+ au_writel(1 << bit, IC0_CFG1CLR);
+ au_writel(1 << bit, IC0_CFG2CLR);
return;
}
if (int_req) /* assign to interrupt request 1 */
- au_writel(1 << irq_nr, IC0_ASSIGNCLR);
+ au_writel(1 << bit, IC0_ASSIGNCLR);
else /* assign to interrupt request 0 */
- au_writel(1 << irq_nr, IC0_ASSIGNSET);
- au_writel(1 << irq_nr, IC0_SRCSET);
- au_writel(1 << irq_nr, IC0_MASKCLR);
- au_writel(1 << irq_nr, IC0_WAKECLR);
+ au_writel(1 << bit, IC0_ASSIGNSET);
+ au_writel(1 << bit, IC0_SRCSET);
+ au_writel(1 << bit, IC0_MASKCLR);
+ au_writel(1 << bit, IC0_WAKECLR);
}
au_sync();
}
@@ -461,8 +474,8 @@ static void setup_local_irq(unsigned int irq_nr, int type, int int_req)
static void intc0_req0_irqdispatch(void)
{
- int irq = 0;
static unsigned long intc0_req0;
+ unsigned int bit;
intc0_req0 |= au_readl(IC0_REQ0INT);
@@ -481,25 +494,25 @@ static void intc0_req0_irqdispatch(void)
return;
}
#endif
- irq = ffs(intc0_req0);
- intc0_req0 &= ~(1 << irq);
- do_IRQ(irq);
+ bit = ffs(intc0_req0);
+ intc0_req0 &= ~(1 << bit);
+ do_IRQ(MIPS_CPU_IRQ_BASE + bit);
}
static void intc0_req1_irqdispatch(void)
{
- int irq = 0;
static unsigned long intc0_req1;
+ unsigned int bit;
intc0_req1 |= au_readl(IC0_REQ1INT);
if (!intc0_req1)
return;
- irq = ffs(intc0_req1);
- intc0_req1 &= ~(1 << irq);
- do_IRQ(irq);
+ bit = ffs(intc0_req1);
+ intc0_req1 &= ~(1 << bit);
+ do_IRQ(bit);
}
@@ -509,43 +522,41 @@ static void intc0_req1_irqdispatch(void)
*/
static void intc1_req0_irqdispatch(void)
{
- int irq = 0;
static unsigned long intc1_req0;
+ unsigned int bit;
intc1_req0 |= au_readl(IC1_REQ0INT);
if (!intc1_req0)
return;
- irq = ffs(intc1_req0);
- intc1_req0 &= ~(1 << irq);
- irq += 32;
- do_IRQ(irq);
+ bit = ffs(intc1_req0);
+ intc1_req0 &= ~(1 << bit);
+ do_IRQ(MIPS_CPU_IRQ_BASE + 32 + bit);
}
static void intc1_req1_irqdispatch(void)
{
- int irq = 0;
static unsigned long intc1_req1;
+ unsigned int bit;
intc1_req1 |= au_readl(IC1_REQ1INT);
if (!intc1_req1)
return;
- irq = ffs(intc1_req1);
- intc1_req1 &= ~(1 << irq);
- irq += 32;
- do_IRQ(irq);
+ bit = ffs(intc1_req1);
+ intc1_req1 &= ~(1 << bit);
+ do_IRQ(MIPS_CPU_IRQ_BASE + 32 + bit);
}
asmlinkage void plat_irq_dispatch(void)
{
- unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM;
+ unsigned int pending = read_c0_status() & read_c0_cause();
if (pending & CAUSEF_IP7)
- do_IRQ(63);
+ do_IRQ(MIPS_CPU_IRQ_BASE + 7);
else if (pending & CAUSEF_IP2)
intc0_req0_irqdispatch();
else if (pending & CAUSEF_IP3)
@@ -561,17 +572,15 @@ asmlinkage void plat_irq_dispatch(void)
void __init arch_init_irq(void)
{
int i;
- unsigned long cp0_status;
struct au1xxx_irqmap *imp;
extern struct au1xxx_irqmap au1xxx_irq_map[];
extern struct au1xxx_irqmap au1xxx_ic0_map[];
extern int au1xxx_nr_irqs;
extern int au1xxx_ic0_nr_irqs;
- cp0_status = read_c0_status();
-
- /* Initialize interrupt controllers to a safe state.
- */
+ /*
+ * Initialize interrupt controllers to a safe state.
+ */
au_writel(0xffffffff, IC0_CFG0CLR);
au_writel(0xffffffff, IC0_CFG1CLR);
au_writel(0xffffffff, IC0_CFG2CLR);
@@ -594,16 +603,20 @@ void __init arch_init_irq(void)
au_writel(0xffffffff, IC1_RISINGCLR);
au_writel(0x00000000, IC1_TESTBIT);
- /* Initialize IC0, which is fixed per processor.
- */
+ mips_cpu_irq_init();
+
+ /*
+ * Initialize IC0, which is fixed per processor.
+ */
imp = au1xxx_ic0_map;
for (i = 0; i < au1xxx_ic0_nr_irqs; i++) {
setup_local_irq(imp->im_irq, imp->im_type, imp->im_request);
imp++;
}
- /* Now set up the irq mapping for the board.
- */
+ /*
+ * Now set up the irq mapping for the board.
+ */
imp = au1xxx_irq_map;
for (i = 0; i < au1xxx_nr_irqs; i++) {
setup_local_irq(imp->im_irq, imp->im_type, imp->im_request);
@@ -615,5 +628,5 @@ void __init arch_init_irq(void)
/* Board specific IRQ initialization.
*/
if (board_init_irq)
- (*board_init_irq)();
+ board_init_irq();
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-21 07:01:15 +0000