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authorLuis Alves <ljalvs@gmail.com>2012-12-04 23:04:49 +0000
committerGreg Ungerer <gerg@uclinux.org>2012-12-05 10:48:47 +1000
commit99e083747df366eb4689a550c4344bae63082de8 (patch)
treeb043ac0eecbbb27dddc72605cfd560c7cae2b019 /arch/m68k/platform/68328/ints.c
parentb69f0859dc8e633c5d8c06845811588fe17e68b3 (diff)
downloadlinux-99e083747df366eb4689a550c4344bae63082de8.tar.bz2
m68knommu: platform code merge for 68000 core cpus
This patch merges all 68000 core cpus into one directory. There is a lot of common code in the 68328, 68EZ328 and 68VZ328 directories. This will also facilitate easy development of support for original stand alone MC68000 CPU machines. Signed-off-by: Luis Alves <ljalvs@gmail.com> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Diffstat (limited to 'arch/m68k/platform/68328/ints.c')
-rw-r--r--arch/m68k/platform/68328/ints.c186
1 files changed, 0 insertions, 186 deletions
diff --git a/arch/m68k/platform/68328/ints.c b/arch/m68k/platform/68328/ints.c
deleted file mode 100644
index b3810febb3e3..000000000000
--- a/arch/m68k/platform/68328/ints.c
+++ /dev/null
@@ -1,186 +0,0 @@
-/*
- * linux/arch/m68knommu/platform/68328/ints.c
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file COPYING in the main directory of this archive
- * for more details.
- *
- * Copyright 1996 Roman Zippel
- * Copyright 1999 D. Jeff Dionne <jeff@rt-control.com>
- */
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <asm/traps.h>
-#include <asm/io.h>
-#include <asm/machdep.h>
-
-#if defined(CONFIG_M68328)
-#include <asm/MC68328.h>
-#elif defined(CONFIG_M68EZ328)
-#include <asm/MC68EZ328.h>
-#elif defined(CONFIG_M68VZ328)
-#include <asm/MC68VZ328.h>
-#endif
-
-/* assembler routines */
-asmlinkage void system_call(void);
-asmlinkage void buserr(void);
-asmlinkage void trap(void);
-asmlinkage void trap3(void);
-asmlinkage void trap4(void);
-asmlinkage void trap5(void);
-asmlinkage void trap6(void);
-asmlinkage void trap7(void);
-asmlinkage void trap8(void);
-asmlinkage void trap9(void);
-asmlinkage void trap10(void);
-asmlinkage void trap11(void);
-asmlinkage void trap12(void);
-asmlinkage void trap13(void);
-asmlinkage void trap14(void);
-asmlinkage void trap15(void);
-asmlinkage void trap33(void);
-asmlinkage void trap34(void);
-asmlinkage void trap35(void);
-asmlinkage void trap36(void);
-asmlinkage void trap37(void);
-asmlinkage void trap38(void);
-asmlinkage void trap39(void);
-asmlinkage void trap40(void);
-asmlinkage void trap41(void);
-asmlinkage void trap42(void);
-asmlinkage void trap43(void);
-asmlinkage void trap44(void);
-asmlinkage void trap45(void);
-asmlinkage void trap46(void);
-asmlinkage void trap47(void);
-asmlinkage irqreturn_t bad_interrupt(int, void *);
-asmlinkage irqreturn_t inthandler(void);
-asmlinkage irqreturn_t inthandler1(void);
-asmlinkage irqreturn_t inthandler2(void);
-asmlinkage irqreturn_t inthandler3(void);
-asmlinkage irqreturn_t inthandler4(void);
-asmlinkage irqreturn_t inthandler5(void);
-asmlinkage irqreturn_t inthandler6(void);
-asmlinkage irqreturn_t inthandler7(void);
-
-/* The 68k family did not have a good way to determine the source
- * of interrupts until later in the family. The EC000 core does
- * not provide the vector number on the stack, we vector everything
- * into one vector and look in the blasted mask register...
- * This code is designed to be fast, almost constant time, not clean!
- */
-void process_int(int vec, struct pt_regs *fp)
-{
- int irq;
- int mask;
-
- unsigned long pend = ISR;
-
- while (pend) {
- if (pend & 0x0000ffff) {
- if (pend & 0x000000ff) {
- if (pend & 0x0000000f) {
- mask = 0x00000001;
- irq = 0;
- } else {
- mask = 0x00000010;
- irq = 4;
- }
- } else {
- if (pend & 0x00000f00) {
- mask = 0x00000100;
- irq = 8;
- } else {
- mask = 0x00001000;
- irq = 12;
- }
- }
- } else {
- if (pend & 0x00ff0000) {
- if (pend & 0x000f0000) {
- mask = 0x00010000;
- irq = 16;
- } else {
- mask = 0x00100000;
- irq = 20;
- }
- } else {
- if (pend & 0x0f000000) {
- mask = 0x01000000;
- irq = 24;
- } else {
- mask = 0x10000000;
- irq = 28;
- }
- }
- }
-
- while (! (mask & pend)) {
- mask <<=1;
- irq++;
- }
-
- do_IRQ(irq, fp);
- pend &= ~mask;
- }
-}
-
-static void intc_irq_unmask(struct irq_data *d)
-{
- IMR &= ~(1 << d->irq);
-}
-
-static void intc_irq_mask(struct irq_data *d)
-{
- IMR |= (1 << d->irq);
-}
-
-static struct irq_chip intc_irq_chip = {
- .name = "M68K-INTC",
- .irq_mask = intc_irq_mask,
- .irq_unmask = intc_irq_unmask,
-};
-
-/*
- * This function should be called during kernel startup to initialize
- * the machine vector table.
- */
-void __init trap_init(void)
-{
- int i;
-
- /* set up the vectors */
- for (i = 72; i < 256; ++i)
- _ramvec[i] = (e_vector) bad_interrupt;
-
- _ramvec[32] = system_call;
-
- _ramvec[65] = (e_vector) inthandler1;
- _ramvec[66] = (e_vector) inthandler2;
- _ramvec[67] = (e_vector) inthandler3;
- _ramvec[68] = (e_vector) inthandler4;
- _ramvec[69] = (e_vector) inthandler5;
- _ramvec[70] = (e_vector) inthandler6;
- _ramvec[71] = (e_vector) inthandler7;
-}
-
-void __init init_IRQ(void)
-{
- int i;
-
- IVR = 0x40; /* Set DragonBall IVR (interrupt base) to 64 */
-
- /* turn off all interrupts */
- IMR = ~0;
-
- for (i = 0; (i < NR_IRQS); i++) {
- irq_set_chip(i, &intc_irq_chip);
- irq_set_handler(i, handle_level_irq);
- }
-}
-