[ARM] 4440/1: PXA: enable the checking of ICIP2 for IRQs

ICIP2 is not examined during IRQ entrance, this patch add the
checking if the processor is PXA27x or later, with CoreG bits
in CPUID (Core Generation) > 1

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 23 insertions, 5 deletions

diff --git a/include/asm-arm/arch-pxa/entry-macro.S b/include/asm-arm/arch-pxa/entry-macro.S
index b7bf0dd4fa44..b7e730851461 100644
--- a/include/asm-arm/arch-pxa/entry-macro.S
+++ b/include/asm-arm/arch-pxa/entry-macro.S
@@ -20,15 +20,33 @@
                 .endm
 
                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
-#ifdef CONFIG_PXA27x
-                mrc     p6, 0, \irqstat, c0, c0, 0              @ ICIP
-                mrc     p6, 0, \irqnr, c1, c0, 0                @ ICMR
-#else
+                mrc     p15, 0, \tmp, c0, c0, 0         @ CPUID
+                mov     \tmp, \tmp, lsr #13
+                and     \tmp, \tmp, #0x7                @ Core G
+                cmp     \tmp, #1
+                bhi     1004f
+
                 mov     \base, #io_p2v(0x40000000)      @ IIR Ctl = 0x40d00000
                 add     \base, \base, #0x00d00000
                 ldr     \irqstat, [\base, #0]           @ ICIP
                 ldr     \irqnr, [\base, #4]             @ ICMR
-#endif
+                b       1002f
+
+1004:
+                mrc     p6, 0, \irqstat, c6, c0, 0      @ ICIP2
+                mrc     p6, 0, \irqnr, c7, c0, 0        @ ICMR2
+                ands    \irqstat, \irqstat, \irqnr
+                beq     1003f
+                rsb     \irqstat, \irqnr, #0
+                and     \irqstat, \irqstat, \irqnr
+                clz     \irqnr, \irqstat
+                rsb     \irqnr, \irqnr, #31
+                add     \irqnr, \irqnr, #32
+                b       1001f
+1003:
+                mrc     p6, 0, \irqstat, c0, c0, 0      @ ICIP
+                mrc     p6, 0, \irqnr, c1, c0, 0        @ ICMR
+1002:
                 ands    \irqnr, \irqstat, \irqnr
                 beq     1001f
                 rsb     \irqstat, \irqnr, #0