| /* | |
| * include/asm-arm/arch-ixp2000/entry-macro.S | |
| * | |
| * Low-level IRQ helper macros for IXP2000-based platforms | |
| * | |
| * This file is licensed under the terms of the GNU General Public | |
| * License version 2. This program is licensed "as is" without any | |
| * warranty of any kind, whether express or implied. | |
| */ | |
| #include <asm/arch/irqs.h> | |
| .macro disable_fiq | |
| .endm | |
| .macro get_irqnr_and_base, irqnr, irqstat, base, tmp | |
| mov \irqnr, #0x0 @clear out irqnr as default | |
| mov \base, #0xfe000000 | |
| orr \base, \base, #0x00e00000 | |
| orr \base, \base, #0x08 | |
| ldr \irqstat, [\base] @ get interrupts | |
| cmp \irqstat, #0 | |
| beq 1001f | |
| clz \irqnr, \irqstat | |
| mov \base, #31 | |
| subs \irqnr, \base, \irqnr | |
| /* | |
| * We handle PCIA and PCIB here so we don't have an | |
| * extra layer of code just to check these two bits. | |
| */ | |
| cmp \irqnr, #IRQ_IXP2000_PCI | |
| bne 1001f | |
| mov \base, #0xfe000000 | |
| orr \base, \base, #0x00c00000 | |
| orr \base, \base, #0x00000100 | |
| orr \base, \base, #0x00000058 | |
| ldr \irqstat, [\base] | |
| mov \tmp, #(1<<26) | |
| tst \irqstat, \tmp | |
| movne \irqnr, #IRQ_IXP2000_PCIA | |
| bne 1001f | |
| mov \tmp, #(1<<27) | |
| tst \irqstat, \tmp | |
| movne \irqnr, #IRQ_IXP2000_PCIB | |
| 1001: | |
| .endm | |