projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| edabd38e SB |
1 | /* |
| 2 | * arch/arm/mach-dove/include/mach/entry-macro.S | |
| 3 | * | |
| 4 | * Low-level IRQ helper macros for Marvell Dove platforms | |
| 5 | * | |
| 6 | * This file is licensed under the terms of the GNU General Public | |
| 7 | * License version 2. This program is licensed "as is" without any | |
| 8 | * warranty of any kind, whether express or implied. | |
| 9 | */ | |
| 10 | ||
| 11 | #include <mach/bridge-regs.h> | |
| 12 | ||
| edabd38e SB |
13 | .macro get_irqnr_preamble, base, tmp |
| 14 | ldr \base, =IRQ_VIRT_BASE | |
| 15 | .endm | |
| 16 | ||
| 17 | .macro get_irqnr_and_base, irqnr, irqstat, base, tmp | |
| 18 | @ check low interrupts | |
| 19 | ldr \irqstat, [\base, #IRQ_CAUSE_LOW_OFF] | |
| 20 | ldr \tmp, [\base, #IRQ_MASK_LOW_OFF] | |
| c1c90728 | 21 | mov \irqnr, #32 |
| edabd38e SB |
22 | ands \irqstat, \irqstat, \tmp |
| 23 | ||
| 24 | @ if no low interrupts set, check high interrupts | |
| 25 | ldreq \irqstat, [\base, #IRQ_CAUSE_HIGH_OFF] | |
| 26 | ldreq \tmp, [\base, #IRQ_MASK_HIGH_OFF] | |
| c1c90728 | 27 | moveq \irqnr, #64 |
| edabd38e SB |
28 | andeqs \irqstat, \irqstat, \tmp |
| 29 | ||
| 30 | @ find first active interrupt source | |
| 31 | clzne \irqstat, \irqstat | |
| 32 | subne \irqnr, \irqnr, \irqstat | |
| 33 | .endm |