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add interrupt debugging; fix bug with the AP60 interrupt handler

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@3250 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
mbm 2006-02-17 23:27:51 +00:00
parent a2759fb484
commit 6f30b3374c
1 changed files with 41 additions and 18 deletions
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59
target/linux/aruba-2.6/patches/002-irq.patch
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@ -92,11 +92,12 @@ diff -Nur linux-2.6.15/arch/mips/aruba/idtIRQ.S linux-2.6.15-openwrt/arch/mips/a
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 +1,424 @@
@@ -0,0 +1,447 @@
+/**************************************************************************
+ *
+ * BRIEF MODULE DESCRIPTION
+ * Interrupt routines for IDT EB434 boards
+ * Interrupt routines for IDT EB434 boards / Atheros boards
+ * Modified by Aruba Networks
+ *
+ * Copyright 2004 IDT Inc. (rischelp@idt.com)
+ *
@ -275,7 +276,6 @@ diff -Nur linux-2.6.15/arch/mips/aruba/irq.c linux-2.6.15-openwrt/arch/mips/arub
+ switch (mips_machtype) {
+ case MACH_ARUBA_AP70:
+ addr = intr_group_muscat[group].base_addr;
+ // unmask intr within group
+ WRITE_MASK_MUSCAT(addr, READ_MASK_MUSCAT(addr) & ~intr_bit);
+ break;
+ case MACH_ARUBA_AP65:
@ -342,7 +342,7 @@ diff -Nur linux-2.6.15/arch/mips/aruba/irq.c linux-2.6.15-openwrt/arch/mips/arub
+ mask = READ_MASK_MERLOT(addr);
+ mask &= ~intr_bit;
+ WRITE_MASK_MERLOT(addr, mask);
+ if (!mask)
+ if (READ_MASK_MERLOT(addr))
+ disable_local_irq(group_to_ip(group));
+ break;
+ }
@ -381,11 +381,9 @@ diff -Nur linux-2.6.15/arch/mips/aruba/irq.c linux-2.6.15-openwrt/arch/mips/arub
+
+ local_irq_save(flags);
+ if (irq_desc[irq_nr].status & (IRQ_DISABLED | IRQ_INPROGRESS)) {
+ printk("warning: end_irq %d did not enable (%x) (ignoring)\n",
+ printk("warning: end_irq %d did not enable (%x)\n",
+ irq_nr, irq_desc[irq_nr].status);
+ }
+
+ if (ip<0) {
+ } else if (ip<0) {
+ enable_local_irq(irq_nr);
+ } else {
+
@ -474,6 +472,25 @@ diff -Nur linux-2.6.15/arch/mips/aruba/irq.c linux-2.6.15-openwrt/arch/mips/arub
+{
+ unsigned int pend, group, ip;
+ volatile unsigned int *addr;
+
+ if(cp0_cause == 0) {
+ printk("INTERRUPT(S) FIRED WHILE MASKED\n");
+
+ // debuging use -- figure out which interrupt(s) fired
+ cp0_cause = read_c0_cause() & CAUSEF_IP;
+ while (cp0_cause) {
+ unsigned long intr_bit;
+ unsigned int irq_nr;
+ intr_bit = (31 - rc32434_clz(cp0_cause));
+ irq_nr = intr_bit - GROUP0_IRQ_BASE;
+ printk(" ---> MASKED IRQ %d\n",irq_nr);
+ cp0_cause &= ~(1 << intr_bit);
+ }
+
+ return;
+ }
+
+
+ switch (mips_machtype) {
+ case MACH_ARUBA_AP70:
+ if ((ip = (cp0_cause & 0x7c00))) {
@ -490,7 +507,7 @@ diff -Nur linux-2.6.15/arch/mips/aruba/irq.c linux-2.6.15-openwrt/arch/mips/arub
+ case MACH_ARUBA_AP65:
+ case MACH_ARUBA_AP60:
+ default:
+ if (cp0_cause & 0x4000) {
+ if (cp0_cause & 0x4000) { // 1 << (8 +6) == irq 6
+ // Misc Interrupt
+ group = 0;
+ addr = intr_group_merlot[group].base_addr;
@ -498,20 +515,26 @@ diff -Nur linux-2.6.15/arch/mips/aruba/irq.c linux-2.6.15-openwrt/arch/mips/arub
+ pend &= READ_MASK_MERLOT(addr); // only unmasked interrupts
+ /* handle one misc interrupt at a time */
+ while (pend) {
+ unsigned int intr_bit, irq_nr;
+ intr_bit = pend ^ (pend - 1);
+ irq_nr = ((31 - rc32434_clz(pend)) + GROUP0_IRQ_BASE);
+ unsigned long intr_bit;
+ unsigned int irq_nr;
+
+ intr_bit = (31 - rc32434_clz(pend));
+ irq_nr = intr_bit + GROUP0_IRQ_BASE;
+
+ do_IRQ(irq_nr, regs);
+ pend &= ~intr_bit;
+ pend &= ~(1 << intr_bit);
+ }
+ }
+ if (cp0_cause & 0x3c00) {
+ if (cp0_cause & 0x3c00) { // irq 2-5
+ while (cp0_cause) {
+ unsigned int intr_bit, irq_nr;
+ intr_bit = cp0_cause ^ (cp0_cause - 1);
+ irq_nr = ((31 - rc32434_clz(cp0_cause)) - GROUP0_IRQ_BASE);
+ unsigned long intr_bit;
+ unsigned int irq_nr;
+
+ intr_bit = (31 - rc32434_clz(cp0_cause));
+ irq_nr = intr_bit - GROUP0_IRQ_BASE;
+
+ do_IRQ(irq_nr, regs);
+ cp0_cause &= ~intr_bit;
+ cp0_cause &= ~(1 << intr_bit);
+ }
+ }
+ break;