diff options
Diffstat (limited to 'include/asm-arm/arch-iop13xx/entry-macro.S')
-rw-r--r-- | include/asm-arm/arch-iop13xx/entry-macro.S | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/include/asm-arm/arch-iop13xx/entry-macro.S b/include/asm-arm/arch-iop13xx/entry-macro.S index 94c50283dc56..a624a7870c64 100644 --- a/include/asm-arm/arch-iop13xx/entry-macro.S +++ b/include/asm-arm/arch-iop13xx/entry-macro.S | |||
@@ -19,21 +19,27 @@ | |||
19 | .macro disable_fiq | 19 | .macro disable_fiq |
20 | .endm | 20 | .endm |
21 | 21 | ||
22 | .macro get_irqnr_preamble, base, tmp | ||
23 | mrc p15, 0, \tmp, c15, c1, 0 | ||
24 | orr \tmp, \tmp, #(1 << 6) | ||
25 | mcr p15, 0, \tmp, c15, c1, 0 @ Enable cp6 access | ||
26 | .endm | ||
27 | |||
22 | /* | 28 | /* |
23 | * Note: a 1-cycle window exists where iintvec will return the value | 29 | * Note: a 1-cycle window exists where iintvec will return the value |
24 | * of iintbase, so we explicitly check for "bad zeros" | 30 | * of iintbase, so we explicitly check for "bad zeros" |
25 | */ | 31 | */ |
26 | .macro get_irqnr_and_base, irqnr, irqstat, base, tmp | 32 | .macro get_irqnr_and_base, irqnr, irqstat, base, tmp |
27 | mrc p15, 0, \tmp, c15, c1, 0 | ||
28 | orr \tmp, \tmp, #(1 << 6) | ||
29 | mcr p15, 0, \tmp, c15, c1, 0 @ Enable cp6 access | ||
30 | |||
31 | mrc p6, 0, \irqnr, c3, c2, 0 @ Read IINTVEC | 33 | mrc p6, 0, \irqnr, c3, c2, 0 @ Read IINTVEC |
32 | cmp \irqnr, #0 | 34 | cmp \irqnr, #0 |
33 | mrceq p6, 0, \irqnr, c3, c2, 0 @ Re-read on potentially bad zero | 35 | mrceq p6, 0, \irqnr, c3, c2, 0 @ Re-read on potentially bad zero |
34 | adds \irqstat, \irqnr, #1 @ Check for 0xffffffff | 36 | adds \irqstat, \irqnr, #1 @ Check for 0xffffffff |
35 | movne \irqnr, \irqnr, lsr #2 @ Convert to irqnr | 37 | movne \irqnr, \irqnr, lsr #2 @ Convert to irqnr |
38 | .endm | ||
36 | 39 | ||
37 | biceq \tmp, \tmp, #(1 << 6) | 40 | .macro arch_ret_to_user, tmp1, tmp2 |
38 | mcreq p15, 0, \tmp, c15, c1, 0 @ Disable cp6 access if no more interrupts | 41 | mrc p15, 0, \tmp1, c15, c1, 0 |
42 | ands \tmp2, \tmp1, #(1 << 6) | ||
43 | bicne \tmp1, \tmp1, #(1 << 6) | ||
44 | mcrne p15, 0, \tmp1, c15, c1, 0 @ Disable cp6 access | ||
39 | .endm | 45 | .endm |