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Diffstat (limited to 'arch/arm/include/asm/hardware/entry-macro-gic.S')
-rw-r--r--arch/arm/include/asm/hardware/entry-macro-gic.S19
1 files changed, 2 insertions, 17 deletions
diff --git a/arch/arm/include/asm/hardware/entry-macro-gic.S b/arch/arm/include/asm/hardware/entry-macro-gic.S
index c115b82fe80a..74ebc803904d 100644
--- a/arch/arm/include/asm/hardware/entry-macro-gic.S
+++ b/arch/arm/include/asm/hardware/entry-macro-gic.S
@@ -22,15 +22,11 @@
22 * interrupt controller spec. To wit: 22 * interrupt controller spec. To wit:
23 * 23 *
24 * Interrupts 0-15 are IPI 24 * Interrupts 0-15 are IPI
25 * 16-28 are reserved 25 * 16-31 are local. We allow 30 to be used for the watchdog.
26 * 29-31 are local. We allow 30 to be used for the watchdog.
27 * 32-1020 are global 26 * 32-1020 are global
28 * 1021-1022 are reserved 27 * 1021-1022 are reserved
29 * 1023 is "spurious" (no interrupt) 28 * 1023 is "spurious" (no interrupt)
30 * 29 *
31 * For now, we ignore all local interrupts so only return an interrupt if it's
32 * between 30 and 1020. The test_for_ipi routine below will pick up on IPIs.
33 *
34 * A simple read from the controller will tell us the number of the highest 30 * A simple read from the controller will tell us the number of the highest
35 * priority enabled interrupt. We then just need to check whether it is in the 31 * priority enabled interrupt. We then just need to check whether it is in the
36 * valid range for an IRQ (30-1020 inclusive). 32 * valid range for an IRQ (30-1020 inclusive).
@@ -43,7 +39,7 @@
43 39
44 ldr \tmp, =1021 40 ldr \tmp, =1021
45 bic \irqnr, \irqstat, #0x1c00 41 bic \irqnr, \irqstat, #0x1c00
46 cmp \irqnr, #29 42 cmp \irqnr, #15
47 cmpcc \irqnr, \irqnr 43 cmpcc \irqnr, \irqnr
48 cmpne \irqnr, \tmp 44 cmpne \irqnr, \tmp
49 cmpcs \irqnr, \irqnr 45 cmpcs \irqnr, \irqnr
@@ -62,14 +58,3 @@
62 strcc \irqstat, [\base, #GIC_CPU_EOI] 58 strcc \irqstat, [\base, #GIC_CPU_EOI]
63 cmpcs \irqnr, \irqnr 59 cmpcs \irqnr, \irqnr
64 .endm 60 .endm
65
66/* As above, this assumes that irqstat and base are preserved.. */
67
68 .macro test_for_ltirq, irqnr, irqstat, base, tmp
69 bic \irqnr, \irqstat, #0x1c00
70 mov \tmp, #0
71 cmp \irqnr, #29
72 moveq \tmp, #1
73 streq \irqstat, [\base, #GIC_CPU_EOI]
74 cmp \tmp, #0
75 .endm