Author: adrian
Date: Sat Apr 30 12:07:15 2011
New Revision: 221257
URL: http://svn.freebsd.org/changeset/base/221257
Log:
The AR724x SoC's require the irq status line to be acked/cleared.
This allows console IO to occur correctly once the kernel is in multi-user
mode.
Submitted by: Luiz Otavio O Souza
Modified:
head/sys/mips/atheros/apb.c
Modified: head/sys/mips/atheros/apb.c
==============================================================================
--- head/sys/mips/atheros/apb.c Sat Apr 30 11:56:04 2011 (r221256)
+++ head/sys/mips/atheros/apb.c Sat Apr 30 12:07:15 2011 (r221257)
@@ -42,6 +42,7 @@ __FBSDID("$FreeBSD$");
#include <mips/atheros/apbvar.h>
#include <mips/atheros/ar71xxreg.h>
+#include <mips/atheros/ar71xx_setup.h>
#undef APB_DEBUG
#ifdef APB_DEBUG
@@ -337,6 +338,20 @@ apb_intr(void *arg)
reg = ATH_READ_REG(AR71XX_MISC_INTR_STATUS);
for (irq = 0; irq < APB_NIRQS; irq++) {
if (reg & (1 << irq)) {
+
+ switch (ar71xx_soc) {
+ case AR71XX_SOC_AR7240:
+ case AR71XX_SOC_AR7241:
+ case AR71XX_SOC_AR7242:
+ /* Ack/clear the irq on status register for
AR724x */
+ ATH_WRITE_REG(AR71XX_MISC_INTR_STATUS,
+ reg & ~(1 << irq));
+ break;
+ default:
+ /* fallthrough */
+ break;
+ }
+
event = sc->sc_eventstab[irq];
if (!event || TAILQ_EMPTY(&event->ie_handlers)) {
/* Ignore timer interrupts */
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