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fix irq handling on 2.6.17 

git-svn-id: svn://svn.openwrt.org/openwrt/branches/buildroot-ng/openwrt@4017 3c298f89-4303-0410-b956-a3cf2f4a3e73
master
Mike Baker 2006-06-20 00:24:18 +00:00
parent 8fb7a067f6
commit 2dcda9c87b
2 changed files with 16 additions and 101 deletions
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8
target/linux/aruba-2.6/patches/000-aruba.patch
View File

@ -45,7 +45,7 @@ diff -Nur linux-2.6.17/arch/mips/aruba/Makefile linux-2.6.17-owrt/arch/mips/arub
+# .S.o:
+# $(CC) $(CFLAGS) -c $< -o $*.o
+
+obj-y := prom.o setup.o idtIRQ.o irq.o time.o flash_lock.o
+obj-y := prom.o setup.o irq.o time.o flash_lock.o
+obj-$(CONFIG_SERIAL_8250) += serial.o
+
+subdir-y += nvram
@ -921,7 +921,7 @@ diff -Nur linux-2.6.17/arch/mips/aruba/setup.c linux-2.6.17-owrt/arch/mips/aruba
diff -Nur linux-2.6.17/arch/mips/aruba/time.c linux-2.6.17-owrt/arch/mips/aruba/time.c
--- linux-2.6.17/arch/mips/aruba/time.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.17-owrt/arch/mips/aruba/time.c 2006-06-18 12:44:28.000000000 +0200
@@ -0,0 +1,108 @@
@@ -0,0 +1,110 @@
+/**************************************************************************
+ *
+ * BRIEF MODULE DESCRIPTION
@ -1022,8 +1022,10 @@ diff -Nur linux-2.6.17/arch/mips/aruba/time.c linux-2.6.17-owrt/arch/mips/aruba/
+
+}
+
+asmlinkage void aruba_timer_interrupt(int irq, struct pt_regs *regs)
+asmlinkage void aruba_timer_interrupt(struct pt_regs *regs)
+{
+ int irq = MIPS_CPU_TIMER_IRQ;
+
+ irq_enter();
+ kstat_this_cpu.irqs[irq]++;
+

109
target/linux/aruba-2.6/patches/002-irq.patch
View File

@ -1,98 +1,7 @@
diff -Nur linux-2.6.15/arch/mips/aruba/idtIRQ.S linux-2.6.15-openwrt/arch/mips/aruba/idtIRQ.S
--- linux-2.6.15/arch/mips/aruba/idtIRQ.S 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.15-openwrt/arch/mips/aruba/idtIRQ.S 2006-01-10 00:32:32.000000000 +0100
@@ -0,0 +1,87 @@
+/**************************************************************************
+ *
+ * BRIEF MODULE DESCRIPTION
+ * Intterrupt dispatcher code for IDT boards
+ *
+ * Copyright 2004 IDT Inc. (rischelp@idt.com)
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ **************************************************************************
+ * May 2004 rkt, neb
+ *
+ * Initial Release
+ *
+ *
+ *
+ **************************************************************************
+ */
+
+
+#include <asm/asm.h>
+#include <asm/mipsregs.h>
+#include <asm/regdef.h>
+#include <asm/stackframe.h>
+
+ .text
+ .set noreorder
+ .set noat
+ .align 5
+ NESTED(idtIRQ, PT_SIZE, sp)
+ .set noat
+ SAVE_ALL
+ CLI
+
+ .set at
+ .set noreorder
+
+ /* Get the pending interrupts */
+ mfc0 t0, CP0_CAUSE
+ nop
+
+ /* Isolate the allowed ones by anding the irq mask */
+ mfc0 t2, CP0_STATUS
+ move a1, sp /* need a nop here, hence we anticipate */
+ andi t0, CAUSEF_IP
+ and t0, t2
+
+ /* check for r4k counter/timer IRQ. */
+
+ andi t1, t0, CAUSEF_IP7
+ beqz t1, 1f
+ nop
+
+ jal aruba_timer_interrupt
+
+ li a0, 7
+
+ j ret_from_irq
+ nop
+1:
+ jal aruba_irqdispatch
+ move a0, t0
+ j ret_from_irq
+ nop
+
+ END(idtIRQ)
+
+
diff -Nur linux-2.6.15/arch/mips/aruba/irq.c linux-2.6.15-openwrt/arch/mips/aruba/irq.c
--- linux-2.6.15/arch/mips/aruba/irq.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.15-openwrt/arch/mips/aruba/irq.c 2006-01-10 00:32:32.000000000 +0100
@@ -0,0 +1,429 @@
diff -Nur linux-2.6.17/arch/mips/aruba/irq.c linux-2.6.17-openwrt/arch/mips/aruba/irq.c
--- linux-2.6.17/arch/mips/aruba/irq.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.17-openwrt/arch/mips/aruba/irq.c 2006-01-10 00:32:32.000000000 +0100
@@ -0,0 +1,433 @@
+/**************************************************************************
+ *
+ * BRIEF MODULE DESCRIPTION
@ -164,7 +73,7 @@ diff -Nur linux-2.6.15/arch/mips/aruba/irq.c linux-2.6.15-openwrt/arch/mips/arub
+#define DPRINTK(fmt, args...)
+#endif
+
+extern asmlinkage void idtIRQ(void);
+extern void aruba_timer_interrupt(struct pt_regs *regs);
+static unsigned int startup_irq(unsigned int irq);
+static void end_irq(unsigned int irq_nr);
+static void mask_and_ack_irq(unsigned int irq_nr);
@ -436,7 +345,6 @@ diff -Nur linux-2.6.15/arch/mips/aruba/irq.c linux-2.6.15-openwrt/arch/mips/arub
+ int i;
+ printk("Initializing IRQ's: %d out of %d\n", RC32434_NR_IRQS, NR_IRQS);
+ memset(irq_desc, 0, sizeof(irq_desc));
+ set_except_vector(0, idtIRQ);
+
+ set_c0_status(0xFF00);
+
@ -450,10 +358,15 @@ diff -Nur linux-2.6.15/arch/mips/aruba/irq.c linux-2.6.15-openwrt/arch/mips/arub
+}
+
+/* Main Interrupt dispatcher */
+void aruba_irqdispatch(unsigned long cp0_cause, struct pt_regs *regs)
+
+void plat_irq_dispatch(struct pt_regs *regs)
+{
+ unsigned int pend, group, ip;
+ volatile unsigned int *addr;
+ unsigned long cp0_cause = read_c0_cause() & read_c0_status() & CAUSEF_IP;
+
+ if (cp0_cause & CAUSEF_IP7)
+ aruba_timer_interrupt(regs);
+
+ if(cp0_cause == 0) {
+ printk("INTERRUPT(S) FIRED WHILE MASKED\n");