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[ARM] pxa: initialize default interrupt priority and use ICHP for IRQ handling

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Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
This commit is contained in:
Haojian Zhuang
2009-08-19 19:49:31 +08:00
committed by Eric Miao
parent 6ba39282bb
commit d2c3706842
2 changed files with 17 additions and 18 deletions
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27
arch/arm/mach-pxa/include/mach/entry-macro.S
View File

@@ -24,34 +24,27 @@
mov \tmp, \tmp, lsr #13 mov \tmp, \tmp, lsr #13
and \tmp, \tmp, #0x7 @ Core G and \tmp, \tmp, #0x7 @ Core G
cmp \tmp, #1 cmp \tmp, #1
bhi 1004f bhi 1002f
@ Core Generation 1 (PXA25x)
mov \base, #io_p2v(0x40000000) @ IIR Ctl = 0x40d00000 mov \base, #io_p2v(0x40000000) @ IIR Ctl = 0x40d00000
add \base, \base, #0x00d00000 add \base, \base, #0x00d00000
ldr \irqstat, [\base, #0] @ ICIP ldr \irqstat, [\base, #0] @ ICIP
ldr \irqnr, [\base, #4] @ ICMR ldr \irqnr, [\base, #4] @ ICMR
b 1002f
1004:
mrc p6, 0, \irqstat, c6, c0, 0 @ ICIP2
mrc p6, 0, \irqnr, c7, c0, 0 @ ICMR2
ands \irqnr, \irqstat, \irqnr
beq 1003f
rsb \irqstat, \irqnr, #0
and \irqstat, \irqstat, \irqnr
clz \irqnr, \irqstat
rsb \irqnr, \irqnr, #31
add \irqnr, \irqnr, #(32 + PXA_IRQ(0))
b 1001f
1003:
mrc p6, 0, \irqstat, c0, c0, 0 @ ICIP
mrc p6, 0, \irqnr, c1, c0, 0 @ ICMR
1002:
ands \irqnr, \irqstat, \irqnr ands \irqnr, \irqstat, \irqnr
beq 1001f beq 1001f
rsb \irqstat, \irqnr, #0 rsb \irqstat, \irqnr, #0
and \irqstat, \irqstat, \irqnr and \irqstat, \irqstat, \irqnr
clz \irqnr, \irqstat clz \irqnr, \irqstat
rsb \irqnr, \irqnr, #(31 + PXA_IRQ(0)) rsb \irqnr, \irqnr, #(31 + PXA_IRQ(0))
b 1001f
1002:
@ Core Generation 2 (PXA27x) or Core Generation 3 (PXA3xx)
mrc p6, 0, \irqstat, c5, c0, 0 @ ICHP
tst \irqstat, #0x80000000
beq 1001f
bic \irqstat, \irqstat, #0x80000000
mov \irqnr, \irqstat, lsr #16
1001: 1001:
.endm .endm

8
arch/arm/mach-pxa/irq.c
View File

@@ -120,7 +120,7 @@ static void __init pxa_init_low_gpio_irq(set_wake_t fn)
void __init pxa_init_irq(int irq_nr, set_wake_t fn) void __init pxa_init_irq(int irq_nr, set_wake_t fn)
{ {
int irq; int irq, i;
pxa_internal_irq_nr = irq_nr; pxa_internal_irq_nr = irq_nr;
@@ -129,6 +129,12 @@ void __init pxa_init_irq(int irq_nr, set_wake_t fn)
_ICLR(irq) = 0; /* all IRQs are IRQ, not FIQ */ _ICLR(irq) = 0; /* all IRQs are IRQ, not FIQ */
} }
/* initialize interrupt priority */
if (cpu_is_pxa27x() || cpu_is_pxa3xx()) {
for (i = 0; i < irq_nr; i++)
IPR(i) = i | (1 << 31);
}
/* only unmasked interrupts kick us out of idle */ /* only unmasked interrupts kick us out of idle */
ICCR = 1; ICCR = 1;