[ARM] mv78xx0: wire up ethernet error interrupt

Wire up the ethernet port's error interrupt so that the
mv643xx_eth driver can sleep for SMI event completion instead of
having to busy-wait for it.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: Nicolas Pitre <nico@marvell.com>

3 files changed, 21 insertions, 6 deletions

diff --git a/arch/arm/mach-mv78xx0/include/mach/entry-macro.S b/arch/arm/mach-mv78xx0/include/mach/entry-macro.S
index ed4a46bcd3b0..fbfb2693ce6c 100644
--- a/arch/arm/mach-mv78xx0/include/mach/entry-macro.S
+++ b/arch/arm/mach-mv78xx0/include/mach/entry-macro.S
@@ -26,14 +26,22 @@
         ldr     \tmp, [\base, #IRQ_MASK_LOW_OFF]
         mov     \irqnr, #31
         ands    \irqstat, \irqstat, \tmp
+        bne     1001f
 
         @ if no low interrupts set, check high interrupts
-        ldreq   \irqstat, [\base, #IRQ_CAUSE_HIGH_OFF]
-        ldreq   \tmp, [\base, #IRQ_MASK_HIGH_OFF]
-        moveq   \irqnr, #63
-        andeqs  \irqstat, \irqstat, \tmp
+        ldr     \irqstat, [\base, #IRQ_CAUSE_HIGH_OFF]
+        ldr     \tmp, [\base, #IRQ_MASK_HIGH_OFF]
+        mov     \irqnr, #63
+        ands    \irqstat, \irqstat, \tmp
+        bne     1001f
+
+        @ if no high interrupts set, check error interrupts
+        ldr     \irqstat, [\base, #IRQ_CAUSE_ERR_OFF]
+        ldr     \tmp, [\base, #IRQ_MASK_ERR_OFF]
+        mov     \irqnr, #95
+        ands    \irqstat, \irqstat, \tmp
 
         @ find first active interrupt source
-        clzne   \irqstat, \irqstat
+1001:   clzne   \irqstat, \irqstat
         subne   \irqnr, \irqnr, \irqstat
         .endm
diff --git a/arch/arm/mach-mv78xx0/include/mach/irqs.h b/arch/arm/mach-mv78xx0/include/mach/irqs.h
index 995d7fb8d06f..bebc330281ec 100644
--- a/arch/arm/mach-mv78xx0/include/mach/irqs.h
+++ b/arch/arm/mach-mv78xx0/include/mach/irqs.h
@@ -80,9 +80,14 @@
 #define IRQ_MV78XX0_DB_OUT      61
 
 /*
+ * MV78xx0 Error Interrupt Controller
+ */
+#define IRQ_MV78XX0_GE_ERR      70
+
+/*
  * MV78XX0 General Purpose Pins
  */
-#define IRQ_MV78XX0_GPIO_START  64
+#define IRQ_MV78XX0_GPIO_START  96
 #define NR_GPIO_IRQS            GPIO_MAX
 
 #define NR_IRQS                 (IRQ_MV78XX0_GPIO_START + NR_GPIO_IRQS)
diff --git a/arch/arm/mach-mv78xx0/include/mach/mv78xx0.h b/arch/arm/mach-mv78xx0/include/mach/mv78xx0.h
index ad664178d6e1..ee9c5593ee92 100644
--- a/arch/arm/mach-mv78xx0/include/mach/mv78xx0.h
+++ b/arch/arm/mach-mv78xx0/include/mach/mv78xx0.h
@@ -71,8 +71,10 @@
 #define   BRIDGE_INT_TIMER1     0x0004
 #define   BRIDGE_INT_TIMER1_CLR (~0x0004)
 #define  IRQ_VIRT_BASE          (BRIDGE_VIRT_BASE | 0x0200)
+#define   IRQ_CAUSE_ERR_OFF     0x0000
 #define   IRQ_CAUSE_LOW_OFF     0x0004
 #define   IRQ_CAUSE_HIGH_OFF    0x0008
+#define   IRQ_MASK_ERR_OFF      0x000c
 #define   IRQ_MASK_LOW_OFF      0x0010
 #define   IRQ_MASK_HIGH_OFF     0x0014
 #define  TIMER_VIRT_BASE        (BRIDGE_VIRT_BASE | 0x0300)