diff options
Diffstat (limited to 'arch/arm/include/asm/hardware/entry-macro-gic.S')
-rw-r--r-- | arch/arm/include/asm/hardware/entry-macro-gic.S | 19 |
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 | ||