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author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-06 19:50:35 -0500 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-06 19:50:35 -0500 |
commit | 3c0cb7c31c206aaedb967e44b98442bbeb17a6c4 (patch) | |
tree | 3ecba45d7ffae4fba4a5aafaef4af5b0b1105bde /arch/arm/mach-realview/include/mach/entry-macro.S | |
parent | f70f5b9dc74ca7d0a64c4ead3fb28da09dc1b234 (diff) | |
parent | 404a02cbd2ae8bf256a2fa1169bdfe86bb5ebb34 (diff) |
Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (416 commits)
ARM: DMA: add support for DMA debugging
ARM: PL011: add DMA burst threshold support for ST variants
ARM: PL011: Add support for transmit DMA
ARM: PL011: Ensure IRQs are disabled in UART interrupt handler
ARM: PL011: Separate hardware FIFO size from TTY FIFO size
ARM: PL011: Allow better handling of vendor data
ARM: PL011: Ensure error flags are clear at startup
ARM: PL011: include revision number in boot-time port printk
ARM: vexpress: add sched_clock() for Versatile Express
ARM i.MX53: Make MX53 EVK bootable
ARM i.MX53: Some bug fix about MX53 MSL code
ARM: 6607/1: sa1100: Update platform device registration
ARM: 6606/1: sa1100: Fix platform device registration
ARM i.MX51: rename IPU irqs
ARM i.MX51: Add ipu clock support
ARM: imx/mx27_3ds: Add PMIC support
ARM: DMA: Replace page_to_dma()/dma_to_page() with pfn_to_dma()/dma_to_pfn()
mx51: fix usb clock support
MX51: Add support for usb host 2
arch/arm/plat-mxc/ehci.c: fix errors/typos
...
Diffstat (limited to 'arch/arm/mach-realview/include/mach/entry-macro.S')
-rw-r--r-- | arch/arm/mach-realview/include/mach/entry-macro.S | 65 |
1 files changed, 1 insertions, 64 deletions
diff --git a/arch/arm/mach-realview/include/mach/entry-macro.S b/arch/arm/mach-realview/include/mach/entry-macro.S index 340a5c276946..4071164aebaa 100644 --- a/arch/arm/mach-realview/include/mach/entry-macro.S +++ b/arch/arm/mach-realview/include/mach/entry-macro.S | |||
@@ -8,74 +8,11 @@ | |||
8 | * warranty of any kind, whether express or implied. | 8 | * warranty of any kind, whether express or implied. |
9 | */ | 9 | */ |
10 | #include <mach/hardware.h> | 10 | #include <mach/hardware.h> |
11 | #include <asm/hardware/gic.h> | 11 | #include <asm/hardware/entry-macro-gic.S> |
12 | 12 | ||
13 | .macro disable_fiq | 13 | .macro disable_fiq |
14 | .endm | 14 | .endm |
15 | 15 | ||
16 | .macro get_irqnr_preamble, base, tmp | ||
17 | ldr \base, =gic_cpu_base_addr | ||
18 | ldr \base, [\base] | ||
19 | .endm | ||
20 | |||
21 | .macro arch_ret_to_user, tmp1, tmp2 | 16 | .macro arch_ret_to_user, tmp1, tmp2 |
22 | .endm | 17 | .endm |
23 | 18 | ||
24 | /* | ||
25 | * The interrupt numbering scheme is defined in the | ||
26 | * interrupt controller spec. To wit: | ||
27 | * | ||
28 | * Interrupts 0-15 are IPI | ||
29 | * 16-28 are reserved | ||
30 | * 29-31 are local. We allow 30 to be used for the watchdog. | ||
31 | * 32-1020 are global | ||
32 | * 1021-1022 are reserved | ||
33 | * 1023 is "spurious" (no interrupt) | ||
34 | * | ||
35 | * For now, we ignore all local interrupts so only return an interrupt if it's | ||
36 | * between 30 and 1020. The test_for_ipi routine below will pick up on IPIs. | ||
37 | * | ||
38 | * A simple read from the controller will tell us the number of the highest | ||
39 | * priority enabled interrupt. We then just need to check whether it is in the | ||
40 | * valid range for an IRQ (30-1020 inclusive). | ||
41 | */ | ||
42 | |||
43 | .macro get_irqnr_and_base, irqnr, irqstat, base, tmp | ||
44 | |||
45 | ldr \irqstat, [\base, #GIC_CPU_INTACK] /* bits 12-10 = src CPU, 9-0 = int # */ | ||
46 | |||
47 | ldr \tmp, =1021 | ||
48 | |||
49 | bic \irqnr, \irqstat, #0x1c00 | ||
50 | |||
51 | cmp \irqnr, #29 | ||
52 | cmpcc \irqnr, \irqnr | ||
53 | cmpne \irqnr, \tmp | ||
54 | cmpcs \irqnr, \irqnr | ||
55 | |||
56 | .endm | ||
57 | |||
58 | /* We assume that irqstat (the raw value of the IRQ acknowledge | ||
59 | * register) is preserved from the macro above. | ||
60 | * If there is an IPI, we immediately signal end of interrupt on the | ||
61 | * controller, since this requires the original irqstat value which | ||
62 | * we won't easily be able to recreate later. | ||
63 | */ | ||
64 | |||
65 | .macro test_for_ipi, irqnr, irqstat, base, tmp | ||
66 | bic \irqnr, \irqstat, #0x1c00 | ||
67 | cmp \irqnr, #16 | ||
68 | strcc \irqstat, [\base, #GIC_CPU_EOI] | ||
69 | cmpcs \irqnr, \irqnr | ||
70 | .endm | ||
71 | |||
72 | /* As above, this assumes that irqstat and base are preserved.. */ | ||
73 | |||
74 | .macro test_for_ltirq, irqnr, irqstat, base, tmp | ||
75 | bic \irqnr, \irqstat, #0x1c00 | ||
76 | mov \tmp, #0 | ||
77 | cmp \irqnr, #29 | ||
78 | moveq \tmp, #1 | ||
79 | streq \irqstat, [\base, #GIC_CPU_EOI] | ||
80 | cmp \tmp, #0 | ||
81 | .endm | ||