| /* |
| * arch/arm/mach-ixp2000/include/mach/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 <mach/irqs.h> |
| |
| .macro disable_fiq |
| .endm |
| |
| .macro get_irqnr_preamble, base, tmp |
| .endm |
| |
| .macro arch_ret_to_user, tmp1, tmp2 |
| .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 |
| |
