[S390] irq: merge irq.c and s390_ext.c
Merge irq.c and s390_ext.c into irq.c. That way all external interrupt related functions are together. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens
parent
df7997ab1c
commit
d7b250e2a2
@ -2,6 +2,7 @@
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#define _ASM_IRQ_H
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#include <linux/hardirq.h>
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#include <linux/types.h>
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enum interruption_class {
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EXTERNAL_INTERRUPT,
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@ -31,4 +32,11 @@ enum interruption_class {
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NR_IRQS,
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};
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typedef void (*ext_int_handler_t)(unsigned int, unsigned int, unsigned long);
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int register_external_interrupt(u16 code, ext_int_handler_t handler);
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int unregister_external_interrupt(u16 code, ext_int_handler_t handler);
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void service_subclass_irq_register(void);
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void service_subclass_irq_unregister(void);
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#endif /* _ASM_IRQ_H */
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@ -1,19 +0,0 @@
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/*
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* Copyright IBM Corp. 1999,2010
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* Author(s): Holger Smolinski <Holger.Smolinski@de.ibm.com>,
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* Martin Schwidefsky <schwidefsky@de.ibm.com>,
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*/
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#ifndef _S390_EXTINT_H
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#define _S390_EXTINT_H
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#include <linux/types.h>
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typedef void (*ext_int_handler_t)(unsigned int, unsigned int, unsigned long);
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int register_external_interrupt(__u16 code, ext_int_handler_t handler);
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int unregister_external_interrupt(__u16 code, ext_int_handler_t handler);
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void service_subclass_irq_register(void);
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void service_subclass_irq_unregister(void);
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#endif /* _S390_EXTINT_H */
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@ -20,10 +20,10 @@ CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"'
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CFLAGS_sysinfo.o += -Iinclude/math-emu -Iarch/s390/math-emu -w
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obj-y := bitmap.o traps.o time.o process.o base.o early.o setup.o \
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processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o \
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s390_ext.o debug.o irq.o ipl.o dis.o diag.o mem_detect.o \
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vdso.o vtime.o sysinfo.o nmi.o sclp.o jump_label.o
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obj-y := bitmap.o traps.o time.o process.o base.o early.o setup.o vtime.o \
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processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o nmi.o \
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debug.o irq.o ipl.o dis.o diag.o mem_detect.o sclp.o vdso.o \
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sysinfo.o jump_label.o
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obj-y += $(if $(CONFIG_64BIT),entry64.o,entry.o)
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obj-y += $(if $(CONFIG_64BIT),reipl64.o,reipl.o)
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@ -30,9 +30,9 @@
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#include <asm/atomic.h>
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#include <asm/mathemu.h>
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#include <asm/cpcmd.h>
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#include <asm/s390_ext.h>
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#include <asm/lowcore.h>
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#include <asm/debug.h>
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#include <asm/irq.h>
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#ifndef CONFIG_64BIT
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#define ONELONG "%08lx: "
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@ -1,19 +1,28 @@
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/*
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* Copyright IBM Corp. 2004,2010
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* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
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* Thomas Spatzier (tspat@de.ibm.com)
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* Copyright IBM Corp. 2004,2011
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* Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>,
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* Holger Smolinski <Holger.Smolinski@de.ibm.com>,
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* Thomas Spatzier <tspat@de.ibm.com>,
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*
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* This file contains interrupt related functions.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/kernel_stat.h>
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#include <linux/interrupt.h>
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#include <linux/seq_file.h>
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#include <linux/cpu.h>
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#include <linux/proc_fs.h>
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#include <linux/profile.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/ftrace.h>
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#include <linux/errno.h>
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#include <linux/slab.h>
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#include <linux/cpu.h>
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#include <asm/irq_regs.h>
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#include <asm/cputime.h>
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#include <asm/lowcore.h>
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#include <asm/irq.h>
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#include "entry.h"
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struct irq_class {
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char *name;
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@ -82,8 +91,7 @@ int show_interrupts(struct seq_file *p, void *v)
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* For compatibilty only. S/390 specific setup of interrupts et al. is done
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* much later in init_channel_subsystem().
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*/
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void __init
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init_IRQ(void)
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void __init init_IRQ(void)
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{
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/* nothing... */
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}
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@ -134,3 +142,116 @@ void init_irq_proc(void)
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create_prof_cpu_mask(root_irq_dir);
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}
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#endif
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/*
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* ext_int_hash[index] is the start of the list for all external interrupts
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* that hash to this index. With the current set of external interrupts
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* (0x1202 external call, 0x1004 cpu timer, 0x2401 hwc console, 0x4000
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* iucv and 0x2603 pfault) this is always the first element.
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*/
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struct ext_int_info {
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struct ext_int_info *next;
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ext_int_handler_t handler;
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u16 code;
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};
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static struct ext_int_info *ext_int_hash[256];
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static inline int ext_hash(u16 code)
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{
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return (code + (code >> 9)) & 0xff;
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}
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int register_external_interrupt(u16 code, ext_int_handler_t handler)
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{
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struct ext_int_info *p;
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int index;
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p = kmalloc(sizeof(*p), GFP_ATOMIC);
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if (!p)
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return -ENOMEM;
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p->code = code;
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p->handler = handler;
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index = ext_hash(code);
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p->next = ext_int_hash[index];
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ext_int_hash[index] = p;
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return 0;
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}
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EXPORT_SYMBOL(register_external_interrupt);
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int unregister_external_interrupt(u16 code, ext_int_handler_t handler)
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{
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struct ext_int_info *p, *q;
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int index;
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index = ext_hash(code);
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q = NULL;
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p = ext_int_hash[index];
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while (p) {
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if (p->code == code && p->handler == handler)
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break;
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q = p;
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p = p->next;
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}
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if (!p)
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return -ENOENT;
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if (q)
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q->next = p->next;
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else
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ext_int_hash[index] = p->next;
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kfree(p);
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return 0;
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}
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EXPORT_SYMBOL(unregister_external_interrupt);
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void __irq_entry do_extint(struct pt_regs *regs, unsigned int ext_int_code,
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unsigned int param32, unsigned long param64)
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{
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struct pt_regs *old_regs;
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unsigned short code;
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struct ext_int_info *p;
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int index;
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code = (unsigned short) ext_int_code;
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old_regs = set_irq_regs(regs);
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s390_idle_check(regs, S390_lowcore.int_clock,
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S390_lowcore.async_enter_timer);
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irq_enter();
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if (S390_lowcore.int_clock >= S390_lowcore.clock_comparator)
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/* Serve timer interrupts first. */
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clock_comparator_work();
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kstat_cpu(smp_processor_id()).irqs[EXTERNAL_INTERRUPT]++;
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if (code != 0x1004)
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__get_cpu_var(s390_idle).nohz_delay = 1;
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index = ext_hash(code);
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for (p = ext_int_hash[index]; p; p = p->next) {
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if (likely(p->code == code))
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p->handler(ext_int_code, param32, param64);
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}
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irq_exit();
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set_irq_regs(old_regs);
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}
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static DEFINE_SPINLOCK(sc_irq_lock);
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static int sc_irq_refcount;
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void service_subclass_irq_register(void)
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{
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spin_lock(&sc_irq_lock);
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if (!sc_irq_refcount)
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ctl_set_bit(0, 9);
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sc_irq_refcount++;
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spin_unlock(&sc_irq_lock);
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}
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EXPORT_SYMBOL(service_subclass_irq_register);
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void service_subclass_irq_unregister(void)
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{
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spin_lock(&sc_irq_lock);
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sc_irq_refcount--;
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if (!sc_irq_refcount)
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ctl_clear_bit(0, 9);
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spin_unlock(&sc_irq_lock);
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}
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EXPORT_SYMBOL(service_subclass_irq_unregister);
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@ -1,131 +0,0 @@
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/*
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* Copyright IBM Corp. 1999,2010
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* Author(s): Holger Smolinski <Holger.Smolinski@de.ibm.com>,
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* Martin Schwidefsky <schwidefsky@de.ibm.com>,
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*/
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#include <linux/kernel_stat.h>
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#include <linux/interrupt.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/ftrace.h>
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#include <linux/errno.h>
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#include <linux/slab.h>
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#include <asm/s390_ext.h>
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#include <asm/irq_regs.h>
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#include <asm/cputime.h>
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#include <asm/lowcore.h>
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#include <asm/irq.h>
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#include "entry.h"
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struct ext_int_info {
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struct ext_int_info *next;
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ext_int_handler_t handler;
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__u16 code;
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};
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/*
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* ext_int_hash[index] is the start of the list for all external interrupts
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* that hash to this index. With the current set of external interrupts
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* (0x1202 external call, 0x1004 cpu timer, 0x2401 hwc console, 0x4000
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* iucv and 0x2603 pfault) this is always the first element.
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*/
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static struct ext_int_info *ext_int_hash[256];
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static inline int ext_hash(__u16 code)
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{
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return (code + (code >> 9)) & 0xff;
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}
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int register_external_interrupt(__u16 code, ext_int_handler_t handler)
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{
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struct ext_int_info *p;
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int index;
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p = kmalloc(sizeof(*p), GFP_ATOMIC);
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if (!p)
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return -ENOMEM;
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p->code = code;
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p->handler = handler;
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index = ext_hash(code);
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p->next = ext_int_hash[index];
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ext_int_hash[index] = p;
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return 0;
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}
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EXPORT_SYMBOL(register_external_interrupt);
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int unregister_external_interrupt(__u16 code, ext_int_handler_t handler)
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{
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struct ext_int_info *p, *q;
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int index;
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index = ext_hash(code);
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q = NULL;
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p = ext_int_hash[index];
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while (p) {
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if (p->code == code && p->handler == handler)
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break;
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q = p;
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p = p->next;
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}
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if (!p)
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return -ENOENT;
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if (q)
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q->next = p->next;
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else
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ext_int_hash[index] = p->next;
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kfree(p);
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return 0;
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}
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EXPORT_SYMBOL(unregister_external_interrupt);
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void __irq_entry do_extint(struct pt_regs *regs, unsigned int ext_int_code,
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unsigned int param32, unsigned long param64)
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{
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struct pt_regs *old_regs;
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unsigned short code;
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struct ext_int_info *p;
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int index;
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code = (unsigned short) ext_int_code;
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old_regs = set_irq_regs(regs);
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s390_idle_check(regs, S390_lowcore.int_clock,
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S390_lowcore.async_enter_timer);
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irq_enter();
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if (S390_lowcore.int_clock >= S390_lowcore.clock_comparator)
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/* Serve timer interrupts first. */
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clock_comparator_work();
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kstat_cpu(smp_processor_id()).irqs[EXTERNAL_INTERRUPT]++;
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if (code != 0x1004)
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__get_cpu_var(s390_idle).nohz_delay = 1;
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index = ext_hash(code);
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for (p = ext_int_hash[index]; p; p = p->next) {
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if (likely(p->code == code))
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p->handler(ext_int_code, param32, param64);
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}
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irq_exit();
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set_irq_regs(old_regs);
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}
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static DEFINE_SPINLOCK(sc_irq_lock);
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static int sc_irq_refcount;
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void service_subclass_irq_register(void)
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{
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spin_lock(&sc_irq_lock);
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if (!sc_irq_refcount)
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ctl_set_bit(0, 9);
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sc_irq_refcount++;
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spin_unlock(&sc_irq_lock);
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}
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EXPORT_SYMBOL(service_subclass_irq_register);
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void service_subclass_irq_unregister(void)
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{
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spin_lock(&sc_irq_lock);
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sc_irq_refcount--;
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if (!sc_irq_refcount)
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ctl_clear_bit(0, 9);
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spin_unlock(&sc_irq_lock);
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}
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EXPORT_SYMBOL(service_subclass_irq_unregister);
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@ -44,7 +44,6 @@
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#include <asm/sigp.h>
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#include <asm/pgalloc.h>
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#include <asm/irq.h>
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#include <asm/s390_ext.h>
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#include <asm/cpcmd.h>
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#include <asm/tlbflush.h>
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#include <asm/timer.h>
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@ -41,7 +41,6 @@
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#include <linux/kprobes.h>
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#include <asm/uaccess.h>
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#include <asm/delay.h>
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#include <asm/s390_ext.h>
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#include <asm/div64.h>
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#include <asm/vdso.h>
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#include <asm/irq.h>
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@ -17,7 +17,6 @@
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#include <linux/smp.h>
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#include <linux/cpuset.h>
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#include <asm/delay.h>
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#include <asm/s390_ext.h>
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#define PTF_HORIZONTAL (0UL)
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#define PTF_VERTICAL (1UL)
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@ -39,7 +39,6 @@
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#include <asm/atomic.h>
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#include <asm/mathemu.h>
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#include <asm/cpcmd.h>
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#include <asm/s390_ext.h>
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#include <asm/lowcore.h>
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#include <asm/debug.h>
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#include "entry.h"
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@ -22,10 +22,10 @@
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#include <linux/cpu.h>
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#include <linux/kprobes.h>
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#include <asm/s390_ext.h>
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#include <asm/timer.h>
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#include <asm/irq_regs.h>
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#include <asm/cputime.h>
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#include <asm/irq.h>
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static DEFINE_PER_CPU(struct vtimer_queue, virt_cpu_timer);
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@ -34,7 +34,7 @@
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#include <asm/asm-offsets.h>
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#include <asm/system.h>
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#include <asm/pgtable.h>
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#include <asm/s390_ext.h>
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#include <asm/irq.h>
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#include <asm/mmu_context.h>
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#include <asm/compat.h>
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#include "../kernel/entry.h"
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@ -19,7 +19,7 @@
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#include <linux/oprofile.h>
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#include <asm/lowcore.h>
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#include <asm/s390_ext.h>
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#include <asm/irq.h>
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#include "hwsampler.h"
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@ -24,7 +24,7 @@
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#include <asm/debug.h>
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#include <asm/ebcdic.h>
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#include <asm/io.h>
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#include <asm/s390_ext.h>
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#include <asm/irq.h>
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#include <asm/vtoc.h>
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#include <asm/diag.h>
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@ -19,7 +19,6 @@
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#include <linux/suspend.h>
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#include <linux/completion.h>
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#include <linux/platform_device.h>
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#include <asm/s390_ext.h>
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#include <asm/types.h>
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#include <asm/irq.h>
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@ -25,7 +25,6 @@
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#include <asm/kvm_para.h>
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#include <asm/kvm_virtio.h>
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#include <asm/setup.h>
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#include <asm/s390_ext.h>
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#include <asm/irq.h>
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#define VIRTIO_SUBCODE_64 0x0D00
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@ -54,7 +54,7 @@
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#include <asm/atomic.h>
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#include <asm/ebcdic.h>
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#include <asm/io.h>
|
||||
#include <asm/s390_ext.h>
|
||||
#include <asm/irq.h>
|
||||
#include <asm/smp.h>
|
||||
|
||||
/*
|
||||
|
||||
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Reference in New Issue
Block a user