patch-2.4.4 linux/arch/cris/kernel/irq.c
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- Lines: 126
- Date:
Fri Apr 6 10:42:55 2001
- Orig file:
v2.4.3/linux/arch/cris/kernel/irq.c
- Orig date:
Thu Feb 8 16:32:44 2001
diff -u --recursive --new-file v2.4.3/linux/arch/cris/kernel/irq.c linux/arch/cris/kernel/irq.c
@@ -1,8 +1,8 @@
-/* $Id: irq.c,v 1.5 2000/08/17 15:35:15 bjornw Exp $
+/* $Id: irq.c,v 1.11 2001/02/27 13:52:52 bjornw Exp $
*
* linux/arch/cris/kernel/irq.c
*
- * Copyright (c) 2000 Axis Communications AB
+ * Copyright (c) 2000,2001 Axis Communications AB
*
* Authors: Bjorn Wesen (bjornw@axis.com)
*
@@ -30,7 +30,7 @@
#include <linux/ioport.h>
#include <linux/interrupt.h>
#include <linux/timex.h>
-#include <linux/malloc.h>
+#include <linux/slab.h>
#include <linux/random.h>
#include <asm/system.h>
@@ -160,6 +160,8 @@
BUILD_IRQ(23, 0x800000)
BUILD_IRQ(24, 0x1000000)
BUILD_IRQ(25, 0x2000000)
+/* IRQ 26-30 are resereved */
+BUILD_IRQ(31, 0x80000000)
/*
* Pointers to the low-level handlers
@@ -172,7 +174,8 @@
IRQ12_interrupt, IRQ13_interrupt, NULL, NULL,
IRQ16_interrupt, IRQ17_interrupt, IRQ18_interrupt, IRQ19_interrupt,
IRQ20_interrupt, IRQ21_interrupt, IRQ22_interrupt, IRQ23_interrupt,
- IRQ24_interrupt, IRQ25_interrupt
+ IRQ24_interrupt, IRQ25_interrupt, NULL, NULL, NULL, NULL, NULL,
+ IRQ31_interrupt
};
static void (*sinterrupt[NR_IRQS])(void) = {
@@ -182,7 +185,8 @@
sIRQ12_interrupt, sIRQ13_interrupt, NULL, NULL,
sIRQ16_interrupt, sIRQ17_interrupt, sIRQ18_interrupt, sIRQ19_interrupt,
sIRQ20_interrupt, sIRQ21_interrupt, sIRQ22_interrupt, sIRQ23_interrupt,
- sIRQ24_interrupt, sIRQ25_interrupt
+ sIRQ24_interrupt, sIRQ25_interrupt, NULL, NULL, NULL, NULL, NULL,
+ sIRQ31_interrupt
};
static void (*bad_interrupt[NR_IRQS])(void) = {
@@ -198,7 +202,9 @@
bad_IRQ18_interrupt, bad_IRQ19_interrupt,
bad_IRQ20_interrupt, bad_IRQ21_interrupt,
bad_IRQ22_interrupt, bad_IRQ23_interrupt,
- bad_IRQ24_interrupt, bad_IRQ25_interrupt
+ bad_IRQ24_interrupt, bad_IRQ25_interrupt,
+ NULL, NULL, NULL, NULL, NULL,
+ bad_IRQ31_interrupt
};
/*
@@ -212,7 +218,8 @@
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
- NULL, NULL
+ NULL, NULL, NULL, NULL,
+ NULL, NULL, NULL, NULL
};
int get_irq_list(char *buf)
@@ -412,6 +419,8 @@
*/
void system_call(void); /* from entry.S */
+void gdb_handle_breakpoint(void); /* from traps.c */
+void do_sigtrap(void); /* also from traps.c */
void init_IRQ(void)
{
@@ -431,14 +440,22 @@
for(i = 0; i < NR_IRQS; i++)
irq_shortcuts[i] = NULL;
-
- for (i = 0; i < 256; i++)
- etrax_irv->v[i] = weird_irq;
-
+
+ for (i = 0; i < 256; i++)
+ etrax_irv->v[i] = weird_irq;
+
+ /* the entries in the break vector contain actual code to be
+ executed by the associated break handler, rather than just a jump
+ address. therefore we need to setup a default breakpoint handler
+ for all breakpoints */
+
+ for (i = 0; i < 16; i++)
+ set_break_vector(i, do_sigtrap);
+
/* set all etrax irq's to the bad handlers */
for (i = 2; i < NR_IRQS; i++)
set_int_vector(i, bad_interrupt[i], 0);
-
+
/* except IRQ 15 which is the multiple-IRQ handler on Etrax100 */
set_int_vector(15, multiple_interrupt, 0);
@@ -456,12 +473,15 @@
set_break_vector(13, system_call);
+ /* setup a breakpoint handler for debugging used for both user and
+ kernel mode debugging (which is why it is not inside an ifdef
+ CONFIG_KGDB) */
+ set_break_vector(8, gdb_handle_breakpoint);
+
#ifdef CONFIG_KGDB
/* setup kgdb if its enabled, and break into the debugger */
-
kgdb_init();
-
breakpoint();
#endif
-}
+}
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