* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-#include <linux/config.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/slab.h>
#include <linux/random.h>
#include <linux/delay.h>
+#include <linux/bitops.h>
-#include <asm/bitops.h>
#include <asm/bootinfo.h>
#include <asm/io.h>
#include <asm/mipsregs.h>
#define EXT_INTC1_REQ1 5 /* IP 5 */
#define MIPS_TIMER_IP 7 /* IP 7 */
-#ifdef CONFIG_KGDB
-extern void breakpoint(void);
-#endif
-
-extern asmlinkage void au1000_IRQ(void);
extern void set_debug_traps(void);
extern irq_cpustat_t irq_stat [NR_CPUS];
+extern void mips_timer_interrupt(struct pt_regs *regs);
static void setup_local_irq(unsigned int irq, int type, int int_req);
static unsigned int startup_irq(unsigned int irq);
inline void local_enable_irq(unsigned int irq_nr);
inline void local_disable_irq(unsigned int irq_nr);
-extern void __init init_generic_irq(void);
void (*board_init_irq)(void);
#ifdef CONFIG_PM
-extern void counter0_irq(int irq, void *dev_id, struct pt_regs *regs);
+extern irqreturn_t counter0_irq(int irq, void *dev_id, struct pt_regs *regs);
#endif
-static spinlock_t irq_lock = SPIN_LOCK_UNLOCKED;
+static DEFINE_SPINLOCK(irq_lock);
static unsigned int startup_irq(unsigned int irq_nr)
}
-static struct hw_interrupt_type rise_edge_irq_type = {
- "Au1000 Rise Edge",
- startup_irq,
- shutdown_irq,
- local_enable_irq,
- local_disable_irq,
- mask_and_ack_rise_edge_irq,
- end_irq,
- NULL
+static struct irq_chip rise_edge_irq_type = {
+ .typename = "Au1000 Rise Edge",
+ .startup = startup_irq,
+ .shutdown = shutdown_irq,
+ .enable = local_enable_irq,
+ .disable = local_disable_irq,
+ .ack = mask_and_ack_rise_edge_irq,
+ .end = end_irq,
};
-static struct hw_interrupt_type fall_edge_irq_type = {
- "Au1000 Fall Edge",
- startup_irq,
- shutdown_irq,
- local_enable_irq,
- local_disable_irq,
- mask_and_ack_fall_edge_irq,
- end_irq,
- NULL
+static struct irq_chip fall_edge_irq_type = {
+ .typename = "Au1000 Fall Edge",
+ .startup = startup_irq,
+ .shutdown = shutdown_irq,
+ .enable = local_enable_irq,
+ .disable = local_disable_irq,
+ .ack = mask_and_ack_fall_edge_irq,
+ .end = end_irq,
};
-static struct hw_interrupt_type either_edge_irq_type = {
- "Au1000 Rise or Fall Edge",
- startup_irq,
- shutdown_irq,
- local_enable_irq,
- local_disable_irq,
- mask_and_ack_either_edge_irq,
- end_irq,
- NULL
+static struct irq_chip either_edge_irq_type = {
+ .typename = "Au1000 Rise or Fall Edge",
+ .startup = startup_irq,
+ .shutdown = shutdown_irq,
+ .enable = local_enable_irq,
+ .disable = local_disable_irq,
+ .ack = mask_and_ack_either_edge_irq,
+ .end = end_irq,
};
-static struct hw_interrupt_type level_irq_type = {
- "Au1000 Level",
- startup_irq,
- shutdown_irq,
- local_enable_irq,
- local_disable_irq,
- mask_and_ack_level_irq,
- end_irq,
- NULL
+static struct irq_chip level_irq_type = {
+ .typename = "Au1000 Level",
+ .startup = startup_irq,
+ .shutdown = shutdown_irq,
+ .enable = local_enable_irq,
+ .disable = local_disable_irq,
+ .ack = mask_and_ack_level_irq,
+ .end = end_irq,
};
#ifdef CONFIG_PM
-void startup_match20_interrupt(void)
+void startup_match20_interrupt(irqreturn_t (*handler)(int, void *, struct pt_regs *))
{
+ struct irq_desc *desc = &irq_desc[AU1000_TOY_MATCH2_INT];
+
+ static struct irqaction action;
+ memset(&action, 0, sizeof(struct irqaction));
+
+ /* 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
+ * getting auto-probed!
+ *
+ * By setting the status to match that of request_irq() we
+ * can avoid it. --cgray
+ */
+ action.dev_id = handler;
+ action.flags = IRQF_DISABLED;
+ cpus_clear(action.mask);
+ action.name = "Au1xxx TOY";
+ action.handler = handler;
+ action.next = NULL;
+
+ desc->action = &action;
+ desc->status &= ~(IRQ_DISABLED | IRQ_AUTODETECT | IRQ_WAITING | IRQ_INPROGRESS);
+
local_enable_irq(AU1000_TOY_MATCH2_INT);
}
#endif
au_writel(1<<(irq_nr-32), IC1_CFG2CLR);
au_writel(1<<(irq_nr-32), IC1_CFG1CLR);
au_writel(1<<(irq_nr-32), IC1_CFG0SET);
- irq_desc[irq_nr].handler = &rise_edge_irq_type;
+ irq_desc[irq_nr].chip = &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);
- irq_desc[irq_nr].handler = &fall_edge_irq_type;
+ irq_desc[irq_nr].chip = &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);
- irq_desc[irq_nr].handler = &either_edge_irq_type;
+ irq_desc[irq_nr].chip = &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);
- irq_desc[irq_nr].handler = &level_irq_type;
+ irq_desc[irq_nr].chip = &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);
- irq_desc[irq_nr].handler = &level_irq_type;
+ irq_desc[irq_nr].chip = &level_irq_type;
break;
case INTC_INT_DISABLED: /* 0:0:0 */
au_writel(1<<(irq_nr-32), IC1_CFG0CLR);
au_writel(1<<irq_nr, IC0_CFG2CLR);
au_writel(1<<irq_nr, IC0_CFG1CLR);
au_writel(1<<irq_nr, IC0_CFG0SET);
- irq_desc[irq_nr].handler = &rise_edge_irq_type;
+ irq_desc[irq_nr].chip = &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);
- irq_desc[irq_nr].handler = &fall_edge_irq_type;
+ irq_desc[irq_nr].chip = &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);
- irq_desc[irq_nr].handler = &either_edge_irq_type;
+ irq_desc[irq_nr].chip = &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);
- irq_desc[irq_nr].handler = &level_irq_type;
+ irq_desc[irq_nr].chip = &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);
- irq_desc[irq_nr].handler = &level_irq_type;
+ irq_desc[irq_nr].chip = &level_irq_type;
break;
case INTC_INT_DISABLED: /* 0:0:0 */
au_writel(1<<irq_nr, IC0_CFG0CLR);
}
-void __init init_IRQ(void)
+void __init arch_init_irq(void)
{
int i;
unsigned long cp0_status;
extern int au1xxx_ic0_nr_irqs;
cp0_status = read_c0_status();
- memset(irq_desc, 0, sizeof(irq_desc));
- set_except_vector(0, au1000_IRQ);
-
- init_generic_irq();
/* Initialize interrupt controllers to a safe state.
*/
*/
if (board_init_irq)
(*board_init_irq)();
-
-#ifdef CONFIG_KGDB
- /* If local serial I/O used for debug port, enter kgdb at once */
- puts("Waiting for kgdb to connect...");
- set_debug_traps();
- breakpoint();
-#endif
}
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
do_IRQ(AU1000_USB_DEV_REQ_INT, regs);
return;
}
-
+#endif
irq = au_ffs(intc0_req0) - 1;
intc0_req0 &= ~(1<<irq);
do_IRQ(irq, regs);
irq = au_ffs(intc0_req1) - 1;
intc0_req1 &= ~(1<<irq);
-#ifdef CONFIG_PM
- if (irq == AU1000_TOY_MATCH2_INT) {
- mask_and_ack_rise_edge_irq(irq);
- counter0_irq(irq, NULL, regs);
- local_enable_irq(irq);
- }
- else
-#endif
- {
- do_IRQ(irq, regs);
- }
+ do_IRQ(irq, regs);
}
* au_sleep function in power.c.....maybe I should just pm_register()
* them instead?
*/
-static uint sleep_intctl_config0[2];
-static uint sleep_intctl_config1[2];
-static uint sleep_intctl_config2[2];
-static uint sleep_intctl_src[2];
-static uint sleep_intctl_assign[2];
-static uint sleep_intctl_wake[2];
-static uint sleep_intctl_mask[2];
+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)
au_writel(sleep_intctl_mask[0], IC0_MASKSET); au_sync();
}
#endif /* CONFIG_PM */
+
+asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+{
+ unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM;
+
+ if (pending & CAUSEF_IP7)
+ mips_timer_interrupt(regs);
+ else if (pending & CAUSEF_IP2)
+ intc0_req0_irqdispatch(regs);
+ else if (pending & CAUSEF_IP3)
+ intc0_req1_irqdispatch(regs);
+ else if (pending & CAUSEF_IP4)
+ intc1_req0_irqdispatch(regs);
+ else if (pending & CAUSEF_IP5)
+ intc1_req1_irqdispatch(regs);
+ else
+ spurious_interrupt(regs);
+}
git://git.onelab.eu / linux-2.6.git / blobdiff