* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-#include <linux/errno.h>
+#include <linux/bitops.h>
#include <linux/init.h>
-#include <linux/irq.h>
-#include <linux/kernel_stat.h>
-#include <linux/module.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/types.h>
+#include <linux/io.h>
#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/timex.h>
-#include <linux/slab.h>
-#include <linux/random.h>
-#include <linux/delay.h>
-#include <linux/bitops.h>
+#include <linux/irq.h>
-#include <asm/bootinfo.h>
-#include <asm/io.h>
#include <asm/mipsregs.h>
-#include <asm/system.h>
#include <asm/mach-au1x00/au1000.h>
#ifdef CONFIG_MIPS_PB1000
#include <asm/mach-pb1x00/pb1000.h>
#endif
-#undef DEBUG_IRQ
-#ifdef DEBUG_IRQ
-/* note: prints function name for you */
-#define DPRINTK(fmt, args...) printk("%s: " fmt, __FUNCTION__ , ## args)
-#else
-#define DPRINTK(fmt, args...)
-#endif
-
#define EXT_INTC0_REQ0 2 /* IP 2 */
#define EXT_INTC0_REQ1 3 /* IP 3 */
#define EXT_INTC1_REQ0 4 /* IP 4 */
static DEFINE_SPINLOCK(irq_lock);
+#ifdef CONFIG_PM
+
+/*
+ * Save/restore the interrupt controller state.
+ * Called from the save/restore core registers as part of the
+ * au_sleep function in power.c.....maybe I should just pm_register()
+ * them instead?
+ */
+static unsigned int sleep_intctl_config0[2];
+static unsigned int sleep_intctl_config1[2];
+static unsigned int sleep_intctl_config2[2];
+static unsigned int sleep_intctl_src[2];
+static unsigned int sleep_intctl_assign[2];
+static unsigned int sleep_intctl_wake[2];
+static unsigned int sleep_intctl_mask[2];
+
+void save_au1xxx_intctl(void)
+{
+ sleep_intctl_config0[0] = au_readl(IC0_CFG0RD);
+ sleep_intctl_config1[0] = au_readl(IC0_CFG1RD);
+ sleep_intctl_config2[0] = au_readl(IC0_CFG2RD);
+ sleep_intctl_src[0] = au_readl(IC0_SRCRD);
+ sleep_intctl_assign[0] = au_readl(IC0_ASSIGNRD);
+ sleep_intctl_wake[0] = au_readl(IC0_WAKERD);
+ sleep_intctl_mask[0] = au_readl(IC0_MASKRD);
+
+ sleep_intctl_config0[1] = au_readl(IC1_CFG0RD);
+ sleep_intctl_config1[1] = au_readl(IC1_CFG1RD);
+ sleep_intctl_config2[1] = au_readl(IC1_CFG2RD);
+ sleep_intctl_src[1] = au_readl(IC1_SRCRD);
+ sleep_intctl_assign[1] = au_readl(IC1_ASSIGNRD);
+ sleep_intctl_wake[1] = au_readl(IC1_WAKERD);
+ sleep_intctl_mask[1] = au_readl(IC1_MASKRD);
+}
+
+/*
+ * For most restore operations, we clear the entire register and
+ * then set the bits we found during the save.
+ */
+void restore_au1xxx_intctl(void)
+{
+ au_writel(0xffffffff, IC0_MASKCLR); au_sync();
+
+ au_writel(0xffffffff, IC0_CFG0CLR); au_sync();
+ au_writel(sleep_intctl_config0[0], IC0_CFG0SET); au_sync();
+ au_writel(0xffffffff, IC0_CFG1CLR); au_sync();
+ au_writel(sleep_intctl_config1[0], IC0_CFG1SET); au_sync();
+ au_writel(0xffffffff, IC0_CFG2CLR); au_sync();
+ au_writel(sleep_intctl_config2[0], IC0_CFG2SET); au_sync();
+ au_writel(0xffffffff, IC0_SRCCLR); au_sync();
+ au_writel(sleep_intctl_src[0], IC0_SRCSET); au_sync();
+ au_writel(0xffffffff, IC0_ASSIGNCLR); au_sync();
+ au_writel(sleep_intctl_assign[0], IC0_ASSIGNSET); au_sync();
+ au_writel(0xffffffff, IC0_WAKECLR); au_sync();
+ au_writel(sleep_intctl_wake[0], IC0_WAKESET); au_sync();
+ au_writel(0xffffffff, IC0_RISINGCLR); au_sync();
+ au_writel(0xffffffff, IC0_FALLINGCLR); au_sync();
+ au_writel(0x00000000, IC0_TESTBIT); au_sync();
+
+ au_writel(0xffffffff, IC1_MASKCLR); au_sync();
+
+ au_writel(0xffffffff, IC1_CFG0CLR); au_sync();
+ au_writel(sleep_intctl_config0[1], IC1_CFG0SET); au_sync();
+ au_writel(0xffffffff, IC1_CFG1CLR); au_sync();
+ au_writel(sleep_intctl_config1[1], IC1_CFG1SET); au_sync();
+ au_writel(0xffffffff, IC1_CFG2CLR); au_sync();
+ au_writel(sleep_intctl_config2[1], IC1_CFG2SET); au_sync();
+ au_writel(0xffffffff, IC1_SRCCLR); au_sync();
+ au_writel(sleep_intctl_src[1], IC1_SRCSET); au_sync();
+ au_writel(0xffffffff, IC1_ASSIGNCLR); au_sync();
+ au_writel(sleep_intctl_assign[1], IC1_ASSIGNSET); au_sync();
+ au_writel(0xffffffff, IC1_WAKECLR); au_sync();
+ au_writel(sleep_intctl_wake[1], IC1_WAKESET); au_sync();
+ au_writel(0xffffffff, IC1_RISINGCLR); au_sync();
+ au_writel(0xffffffff, IC1_FALLINGCLR); au_sync();
+ au_writel(0x00000000, IC1_TESTBIT); au_sync();
+
+ au_writel(sleep_intctl_mask[1], IC1_MASKSET); au_sync();
+
+ au_writel(sleep_intctl_mask[0], IC0_MASKSET); au_sync();
+}
+#endif /* CONFIG_PM */
+
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);
- }
- else {
- au_writel(1<<irq_nr, IC0_MASKSET);
- au_writel(1<<irq_nr, IC0_WAKESET);
+ au_writel(1 << (irq_nr - 32), IC1_MASKSET);
+ au_writel(1 << (irq_nr - 32), IC1_WAKESET);
+ } else {
+ au_writel(1 << irq_nr, IC0_MASKSET);
+ au_writel(1 << irq_nr, IC0_WAKESET);
}
au_sync();
}
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);
- }
- else {
- au_writel(1<<irq_nr, IC0_MASKCLR);
- au_writel(1<<irq_nr, IC0_WAKECLR);
+ au_writel(1 << (irq_nr - 32), IC1_MASKCLR);
+ au_writel(1 << (irq_nr - 32), IC1_WAKECLR);
+ } else {
+ au_writel(1 << irq_nr, IC0_MASKCLR);
+ au_writel(1 << irq_nr, IC0_WAKECLR);
}
au_sync();
}
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);
- }
- else {
- au_writel(1<<irq_nr, IC0_RISINGCLR);
- au_writel(1<<irq_nr, IC0_MASKCLR);
+ au_writel(1 << (irq_nr - 32), IC1_RISINGCLR);
+ au_writel(1 << (irq_nr - 32), IC1_MASKCLR);
+ } else {
+ au_writel(1 << irq_nr, IC0_RISINGCLR);
+ au_writel(1 << irq_nr, IC0_MASKCLR);
}
au_sync();
}
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);
- }
- else {
- au_writel(1<<irq_nr, IC0_FALLINGCLR);
- au_writel(1<<irq_nr, IC0_MASKCLR);
+ au_writel(1 << (irq_nr - 32), IC1_FALLINGCLR);
+ au_writel(1 << (irq_nr - 32), IC1_MASKCLR);
+ } else {
+ au_writel(1 << irq_nr, IC0_FALLINGCLR);
+ au_writel(1 << irq_nr, IC0_MASKCLR);
}
au_sync();
}
* 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);
- }
- 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 << (irq_nr - 32), IC1_FALLINGCLR);
+ au_writel(1 << (irq_nr - 32), IC1_RISINGCLR);
+ au_writel(1 << (irq_nr - 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_sync();
}
static void end_irq(unsigned int irq_nr)
{
- if (!(irq_desc[irq_nr].status & (IRQ_DISABLED|IRQ_INPROGRESS))) {
+ if (!(irq_desc[irq_nr].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
local_enable_irq(irq_nr);
- }
+
#if defined(CONFIG_MIPS_PB1000)
if (irq_nr == AU1000_GPIO_15) {
au_writel(0x4000, PB1000_MDR); /* enable int */
spin_lock_irqsave(&irq_lock, flags);
if (controller) {
mask = au_readl(IC1_MASKSET);
- for (i=32; i<64; i++) {
+ for (i = 32; i < 64; i++)
local_disable_irq(i);
- }
- }
- else {
+ } else {
mask = au_readl(IC0_MASKSET);
- for (i=0; i<32; i++) {
+ for (i = 0; i < 32; i++)
local_disable_irq(i);
- }
}
spin_unlock_irqrestore(&irq_lock, flags);
unsigned long flags, new_mask;
spin_lock_irqsave(&irq_lock, flags);
- for (i=0; i<32; i++) {
- if (mask & (1<<i)) {
+ for (i = 0; i < 32; i++) {
+ if (mask & (1 << i)) {
if (controller)
- local_enable_irq(i+32);
+ local_enable_irq(i + 32);
else
local_enable_irq(i);
}
static struct irq_chip rise_edge_irq_type = {
- .name = "Au1000 Rise Edge",
- .ack = mask_and_ack_rise_edge_irq,
- .mask = local_disable_irq,
- .mask_ack = mask_and_ack_rise_edge_irq,
- .unmask = local_enable_irq,
- .end = end_irq,
+ .name = "Au1000 Rise Edge",
+ .ack = mask_and_ack_rise_edge_irq,
+ .mask = local_disable_irq,
+ .mask_ack = mask_and_ack_rise_edge_irq,
+ .unmask = local_enable_irq,
+ .end = end_irq,
};
static struct irq_chip fall_edge_irq_type = {
- .name = "Au1000 Fall Edge",
- .ack = mask_and_ack_fall_edge_irq,
- .mask = local_disable_irq,
- .mask_ack = mask_and_ack_fall_edge_irq,
- .unmask = local_enable_irq,
- .end = end_irq,
+ .name = "Au1000 Fall Edge",
+ .ack = mask_and_ack_fall_edge_irq,
+ .mask = local_disable_irq,
+ .mask_ack = mask_and_ack_fall_edge_irq,
+ .unmask = local_enable_irq,
+ .end = end_irq,
};
static struct irq_chip either_edge_irq_type = {
- .name = "Au1000 Rise or Fall Edge",
- .ack = mask_and_ack_either_edge_irq,
- .mask = local_disable_irq,
- .mask_ack = mask_and_ack_either_edge_irq,
- .unmask = local_enable_irq,
- .end = end_irq,
+ .name = "Au1000 Rise or Fall Edge",
+ .ack = mask_and_ack_either_edge_irq,
+ .mask = local_disable_irq,
+ .mask_ack = mask_and_ack_either_edge_irq,
+ .unmask = local_enable_irq,
+ .end = end_irq,
};
static struct irq_chip level_irq_type = {
- .name = "Au1000 Level",
- .ack = mask_and_ack_level_irq,
- .mask = local_disable_irq,
- .mask_ack = mask_and_ack_level_irq,
- .unmask = local_enable_irq,
- .end = end_irq,
+ .name = "Au1000 Level",
+ .ack = mask_and_ack_level_irq,
+ .mask = local_disable_irq,
+ .mask_ack = mask_and_ack_level_irq,
+ .unmask = local_enable_irq,
+ .end = end_irq,
};
#ifdef CONFIG_PM
static struct irqaction action;
memset(&action, 0, sizeof(struct irqaction));
- /* This is a big problem.... since we didn't use request_irq
+ /*
+ * This is a big problem.... since we didn't use request_irq
* when kernel/irq.c calls probe_irq_xxx this interrupt will
* be probed for usage. This will end up disabling the device :(
* Give it a bogus "action" pointer -- this will keep it from
/* Config2[n], Config1[n], Config0[n] */
if (irq_nr > AU1000_LAST_INTC0_INT) {
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);
- 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);
- 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);
- 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);
- 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);
- 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);
- break;
- default: /* disable the interrupt */
- printk("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);
- return;
+ 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);
+ 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);
+ 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);
+ 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);
+ 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);
+ 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);
+ 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);
+ return;
}
if (int_req) /* assign to interrupt request 1 */
- au_writel(1<<(irq_nr-32), IC1_ASSIGNCLR);
+ au_writel(1 << (irq_nr - 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);
- }
- else {
+ 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);
+ } 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);
- 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);
- 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);
- 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);
- 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);
- 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);
- break;
- default: /* disable the interrupt */
- printk("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);
- return;
+ 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);
+ 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);
+ 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);
+ 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);
+ 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);
+ 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);
+ 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);
+ return;
}
if (int_req) /* assign to interrupt request 1 */
- au_writel(1<<irq_nr, IC0_ASSIGNCLR);
+ au_writel(1 << irq_nr, 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 << 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_sync();
}
-
-void __init arch_init_irq(void)
-{
- int i;
- unsigned long cp0_status;
- au1xxx_irq_map_t *imp;
- extern au1xxx_irq_map_t au1xxx_irq_map[];
- extern au1xxx_irq_map_t 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.
- */
- au_writel(0xffffffff, IC0_CFG0CLR);
- au_writel(0xffffffff, IC0_CFG1CLR);
- au_writel(0xffffffff, IC0_CFG2CLR);
- au_writel(0xffffffff, IC0_MASKCLR);
- au_writel(0xffffffff, IC0_ASSIGNSET);
- au_writel(0xffffffff, IC0_WAKECLR);
- au_writel(0xffffffff, IC0_SRCSET);
- au_writel(0xffffffff, IC0_FALLINGCLR);
- au_writel(0xffffffff, IC0_RISINGCLR);
- au_writel(0x00000000, IC0_TESTBIT);
-
- au_writel(0xffffffff, IC1_CFG0CLR);
- au_writel(0xffffffff, IC1_CFG1CLR);
- au_writel(0xffffffff, IC1_CFG2CLR);
- au_writel(0xffffffff, IC1_MASKCLR);
- au_writel(0xffffffff, IC1_ASSIGNSET);
- au_writel(0xffffffff, IC1_WAKECLR);
- au_writel(0xffffffff, IC1_SRCSET);
- au_writel(0xffffffff, IC1_FALLINGCLR);
- au_writel(0xffffffff, IC1_RISINGCLR);
- au_writel(0x00000000, IC1_TESTBIT);
-
- /* 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.
- */
- imp = au1xxx_irq_map;
- for (i=0; i<au1xxx_nr_irqs; i++) {
- setup_local_irq(imp->im_irq, imp->im_type, imp->im_request);
- imp++;
- }
-
- set_c0_status(ALLINTS);
-
- /* Board specific IRQ initialization.
- */
- if (board_init_irq)
- (*board_init_irq)();
-}
-
-
/*
* Interrupts are nested. Even if an interrupt handler is registered
* as "fast", we might get another interrupt before we return from
static void intc0_req0_irqdispatch(void)
{
int irq = 0;
- static unsigned long intc0_req0 = 0;
+ static unsigned long intc0_req0;
intc0_req0 |= au_readl(IC0_REQ0INT);
if (!intc0_req0)
return;
+
#ifdef AU1000_USB_DEV_REQ_INT
/*
* Because of the tight timing of SETUP token to reply
* transactions, the USB devices-side packet complete
* interrupt needs the highest priority.
*/
- if ((intc0_req0 & (1<<AU1000_USB_DEV_REQ_INT))) {
- intc0_req0 &= ~(1<<AU1000_USB_DEV_REQ_INT);
+ if ((intc0_req0 & (1 << AU1000_USB_DEV_REQ_INT))) {
+ intc0_req0 &= ~(1 << AU1000_USB_DEV_REQ_INT);
do_IRQ(AU1000_USB_DEV_REQ_INT);
return;
}
#endif
irq = au_ffs(intc0_req0) - 1;
- intc0_req0 &= ~(1<<irq);
+ intc0_req0 &= ~(1 << irq);
do_IRQ(irq);
}
static void intc0_req1_irqdispatch(void)
{
int irq = 0;
- static unsigned long intc0_req1 = 0;
+ static unsigned long intc0_req1;
intc0_req1 |= au_readl(IC0_REQ1INT);
return;
irq = au_ffs(intc0_req1) - 1;
- intc0_req1 &= ~(1<<irq);
+ intc0_req1 &= ~(1 << irq);
do_IRQ(irq);
}
static void intc1_req0_irqdispatch(void)
{
int irq = 0;
- static unsigned long intc1_req0 = 0;
+ static unsigned long intc1_req0;
intc1_req0 |= au_readl(IC1_REQ0INT);
return;
irq = au_ffs(intc1_req0) - 1;
- intc1_req0 &= ~(1<<irq);
+ intc1_req0 &= ~(1 << irq);
irq += 32;
do_IRQ(irq);
}
static void intc1_req1_irqdispatch(void)
{
int irq = 0;
- static unsigned long intc1_req1 = 0;
+ static unsigned long intc1_req1;
intc1_req1 |= au_readl(IC1_REQ1INT);
return;
irq = au_ffs(intc1_req1) - 1;
- intc1_req1 &= ~(1<<irq);
+ intc1_req1 &= ~(1 << irq);
irq += 32;
do_IRQ(irq);
}
-#ifdef CONFIG_PM
-
-/* Save/restore the interrupt controller state.
- * Called from the save/restore core registers as part of the
- * au_sleep function in power.c.....maybe I should just pm_register()
- * them instead?
- */
-static unsigned int sleep_intctl_config0[2];
-static unsigned int sleep_intctl_config1[2];
-static unsigned int sleep_intctl_config2[2];
-static unsigned int sleep_intctl_src[2];
-static unsigned int sleep_intctl_assign[2];
-static unsigned int sleep_intctl_wake[2];
-static unsigned int sleep_intctl_mask[2];
-
-void
-save_au1xxx_intctl(void)
-{
- sleep_intctl_config0[0] = au_readl(IC0_CFG0RD);
- sleep_intctl_config1[0] = au_readl(IC0_CFG1RD);
- sleep_intctl_config2[0] = au_readl(IC0_CFG2RD);
- sleep_intctl_src[0] = au_readl(IC0_SRCRD);
- sleep_intctl_assign[0] = au_readl(IC0_ASSIGNRD);
- sleep_intctl_wake[0] = au_readl(IC0_WAKERD);
- sleep_intctl_mask[0] = au_readl(IC0_MASKRD);
-
- sleep_intctl_config0[1] = au_readl(IC1_CFG0RD);
- sleep_intctl_config1[1] = au_readl(IC1_CFG1RD);
- sleep_intctl_config2[1] = au_readl(IC1_CFG2RD);
- sleep_intctl_src[1] = au_readl(IC1_SRCRD);
- sleep_intctl_assign[1] = au_readl(IC1_ASSIGNRD);
- sleep_intctl_wake[1] = au_readl(IC1_WAKERD);
- sleep_intctl_mask[1] = au_readl(IC1_MASKRD);
-}
-
-/* For most restore operations, we clear the entire register and
- * then set the bits we found during the save.
- */
-void
-restore_au1xxx_intctl(void)
-{
- au_writel(0xffffffff, IC0_MASKCLR); au_sync();
-
- au_writel(0xffffffff, IC0_CFG0CLR); au_sync();
- au_writel(sleep_intctl_config0[0], IC0_CFG0SET); au_sync();
- au_writel(0xffffffff, IC0_CFG1CLR); au_sync();
- au_writel(sleep_intctl_config1[0], IC0_CFG1SET); au_sync();
- au_writel(0xffffffff, IC0_CFG2CLR); au_sync();
- au_writel(sleep_intctl_config2[0], IC0_CFG2SET); au_sync();
- au_writel(0xffffffff, IC0_SRCCLR); au_sync();
- au_writel(sleep_intctl_src[0], IC0_SRCSET); au_sync();
- au_writel(0xffffffff, IC0_ASSIGNCLR); au_sync();
- au_writel(sleep_intctl_assign[0], IC0_ASSIGNSET); au_sync();
- au_writel(0xffffffff, IC0_WAKECLR); au_sync();
- au_writel(sleep_intctl_wake[0], IC0_WAKESET); au_sync();
- au_writel(0xffffffff, IC0_RISINGCLR); au_sync();
- au_writel(0xffffffff, IC0_FALLINGCLR); au_sync();
- au_writel(0x00000000, IC0_TESTBIT); au_sync();
-
- au_writel(0xffffffff, IC1_MASKCLR); au_sync();
-
- au_writel(0xffffffff, IC1_CFG0CLR); au_sync();
- au_writel(sleep_intctl_config0[1], IC1_CFG0SET); au_sync();
- au_writel(0xffffffff, IC1_CFG1CLR); au_sync();
- au_writel(sleep_intctl_config1[1], IC1_CFG1SET); au_sync();
- au_writel(0xffffffff, IC1_CFG2CLR); au_sync();
- au_writel(sleep_intctl_config2[1], IC1_CFG2SET); au_sync();
- au_writel(0xffffffff, IC1_SRCCLR); au_sync();
- au_writel(sleep_intctl_src[1], IC1_SRCSET); au_sync();
- au_writel(0xffffffff, IC1_ASSIGNCLR); au_sync();
- au_writel(sleep_intctl_assign[1], IC1_ASSIGNSET); au_sync();
- au_writel(0xffffffff, IC1_WAKECLR); au_sync();
- au_writel(sleep_intctl_wake[1], IC1_WAKESET); au_sync();
- au_writel(0xffffffff, IC1_RISINGCLR); au_sync();
- au_writel(0xffffffff, IC1_FALLINGCLR); au_sync();
- au_writel(0x00000000, IC1_TESTBIT); au_sync();
-
- au_writel(sleep_intctl_mask[1], IC1_MASKSET); au_sync();
-
- au_writel(sleep_intctl_mask[0], IC0_MASKSET); au_sync();
-}
-#endif /* CONFIG_PM */
-
asmlinkage void plat_irq_dispatch(void)
{
unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM;
else
spurious_interrupt();
}
+
+void __init arch_init_irq(void)
+{
+ int i;
+ unsigned long cp0_status;
+ au1xxx_irq_map_t *imp;
+ extern au1xxx_irq_map_t au1xxx_irq_map[];
+ extern au1xxx_irq_map_t 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.
+ */
+ au_writel(0xffffffff, IC0_CFG0CLR);
+ au_writel(0xffffffff, IC0_CFG1CLR);
+ au_writel(0xffffffff, IC0_CFG2CLR);
+ au_writel(0xffffffff, IC0_MASKCLR);
+ au_writel(0xffffffff, IC0_ASSIGNSET);
+ au_writel(0xffffffff, IC0_WAKECLR);
+ au_writel(0xffffffff, IC0_SRCSET);
+ au_writel(0xffffffff, IC0_FALLINGCLR);
+ au_writel(0xffffffff, IC0_RISINGCLR);
+ au_writel(0x00000000, IC0_TESTBIT);
+
+ au_writel(0xffffffff, IC1_CFG0CLR);
+ au_writel(0xffffffff, IC1_CFG1CLR);
+ au_writel(0xffffffff, IC1_CFG2CLR);
+ au_writel(0xffffffff, IC1_MASKCLR);
+ au_writel(0xffffffff, IC1_ASSIGNSET);
+ au_writel(0xffffffff, IC1_WAKECLR);
+ au_writel(0xffffffff, IC1_SRCSET);
+ au_writel(0xffffffff, IC1_FALLINGCLR);
+ au_writel(0xffffffff, IC1_RISINGCLR);
+ au_writel(0x00000000, IC1_TESTBIT);
+
+ /* 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.
+ */
+ imp = au1xxx_irq_map;
+ for (i = 0; i < au1xxx_nr_irqs; i++) {
+ setup_local_irq(imp->im_irq, imp->im_type, imp->im_request);
+ imp++;
+ }
+
+ set_c0_status(ALLINTS);
+
+ /* Board specific IRQ initialization.
+ */
+ if (board_init_irq)
+ (*board_init_irq)();
+}
projects / linux-2.6 / commitdiff