irq_64.c File Reference

#include <linux/sched.h>
#include <linux/linkage.h>
#include <linux/ptrace.h>
#include <linux/errno.h>
#include <linux/kernel_stat.h>
#include <linux/signal.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/random.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/ftrace.h>
#include <linux/irq.h>
#include <linux/kmemleak.h>
#include <asm/ptrace.h>
#include <asm/processor.h>
#include <linux/atomic.h>
#include <asm/irq.h>
#include <asm/io.h>
#include <asm/iommu.h>
#include <asm/upa.h>
#include <asm/oplib.h>
#include <asm/prom.h>
#include <asm/timer.h>
#include <asm/smp.h>
#include <asm/starfire.h>
#include <asm/uaccess.h>
#include <asm/cache.h>
#include <asm/cpudata.h>
#include <asm/auxio.h>
#include <asm/head.h>
#include <asm/hypervisor.h>
#include <asm/cacheflush.h>
#include "entry.h"
#include "cpumap.h"
#include "kstack.h"

Go to the source code of this file.

Data Structures
struct	irq_handler_data
struct	sun5_timer

Macros
#define	NUM_IVECS   (IMAP_INR + 1)
#define	irq_work_pa(__cpu)   &(trap_block[(__cpu)].irq_worklist_pa)
#define	irq_choose_cpu(irq, affinity)   real_hard_smp_processor_id()

Functions
unsigned char	irq_alloc (unsigned int dev_handle, unsigned int dev_ino)
int	arch_show_interrupts (struct seq_file *p, int prec)
void	irq_install_pre_handler (int irq, void(*func)(unsigned int, void *, void *), void *arg1, void *arg2)
unsigned int	build_irq (int inofixup, unsigned long iclr, unsigned long imap)
unsigned int	sun4v_build_irq (u32 devhandle, unsigned int devino)
unsigned int	sun4v_build_virq (u32 devhandle, unsigned int devino)
void	ack_bad_irq (unsigned int irq)
void __irq_entry	handler_irq (int pil, struct pt_regs *regs)
void	do_softirq (void)
void notrace	init_irqwork_curcpu (void)
void __cpuinit notrace	sun4v_register_mondo_queues (int this_cpu)
void __init	init_IRQ (void)

Variables
struct ino_bucket *	ivector_table
unsigned long	ivector_table_pa
void *	hardirq_stack [NR_CPUS]
void *	softirq_stack [NR_CPUS]

Macro Definition Documentation

#define irq_choose_cpu	(		irq,
			affinity
	)		real_hard_smp_processor_id()

Definition at line 237 of file irq_64.c.

#define irq_work_pa

(

__cpu

)

&(trap_block[(__cpu)].irq_worklist_pa)

Definition at line 108 of file irq_64.c.

#define NUM_IVECS   (IMAP_INR + 1)

Definition at line 50 of file irq_64.c.

Function Documentation

void ack_bad_irq

(

unsigned int

irq

)

Definition at line 644 of file irq_64.c.

int arch_show_interrupts	(	struct seq_file *	p,
		int	prec
	)

Definition at line 163 of file irq_64.c.

unsigned int build_irq	(	int	inofixup,
		unsigned long	iclr,
		unsigned long	imap
	)

Definition at line 503 of file irq_64.c.

void do_softirq

(

void

)

Definition at line 701 of file irq_64.c.

void __irq_entry handler_irq	(	int	pil,
		struct pt_regs *	regs
	)

Definition at line 658 of file irq_64.c.

void __init init_IRQ

(

void

)

The hexagon core comes with a first-level interrupt controller with 32 total possible interrupts. When the core is embedded into different systems/platforms, it is typically wrapped by macro cells that provide one or more second-level interrupt controllers that are cascaded into one or more of the first-level interrupts handled here. The precise wiring of these other irqs varies from platform to platform, and are set up & configured in the platform-specific files.

The first-level interrupt controller is wrapped by the VM, which virtualizes the interrupt controller for us. It provides a very simple, fast & efficient API, and so the fasteoi handler is appropriate for this case.

Definition at line 936 of file irq_64.c.

void notrace init_irqwork_curcpu

(

void

)

Definition at line 820 of file irq_64.c.

unsigned char irq_alloc	(	unsigned int	dev_handle,
		unsigned int	dev_ino
	)

Definition at line 117 of file irq_64.c.

void irq_install_pre_handler	(	int	irq,
		void(*)(unsigned int, void *, void *)	func,
		void *	arg1,
		void *	arg2
	)

Definition at line 490 of file irq_64.c.

unsigned int sun4v_build_irq	(	u32	devhandle,
		unsigned int	devino
	)

Definition at line 580 of file irq_64.c.

unsigned int sun4v_build_virq	(	u32	devhandle,
		unsigned int	devino
	)

Definition at line 587 of file irq_64.c.

void __cpuinit notrace sun4v_register_mondo_queues

(

int

this_cpu

)

Definition at line 851 of file irq_64.c.

Variable Documentation

unsigned int dev_handle

Definition at line 111 of file irq_64.c.

unsigned int dev_ino

Definition at line 112 of file irq_64.c.

void* hardirq_stack[NR_CPUS]

Definition at line 655 of file irq_64.c.

unsigned int in_use

Definition at line 113 of file irq_64.c.

struct ino_bucket* ivector_table

Definition at line 52 of file irq_64.c.

unsigned long ivector_table_pa

Definition at line 53 of file irq_64.c.

void* softirq_stack[NR_CPUS]

Definition at line 656 of file irq_64.c.