| /* |
| * arch/arm/mach-ep93xx/include/mach/entry-macro.S |
| * IRQ demultiplexing for EP93xx |
| * |
| * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or (at |
| * your option) any later version. |
| */ |
| #include <mach/ep93xx-regs.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 |
| ldr \base, =(EP93XX_AHB_VIRT_BASE) |
| orr \base, \base, #0x000b0000 |
| mov \irqnr, #0 |
| ldr \irqstat, [\base] @ lower 32 interrupts |
| cmp \irqstat, #0 |
| bne 1001f |
| |
| eor \base, \base, #0x00070000 |
| ldr \irqstat, [\base] @ upper 32 interrupts |
| cmp \irqstat, #0 |
| beq 1002f |
| mov \irqnr, #0x20 |
| |
| 1001: |
| movs \tmp, \irqstat, lsl #16 |
| movne \irqstat, \tmp |
| addeq \irqnr, \irqnr, #16 |
| |
| movs \tmp, \irqstat, lsl #8 |
| movne \irqstat, \tmp |
| addeq \irqnr, \irqnr, #8 |
| |
| movs \tmp, \irqstat, lsl #4 |
| movne \irqstat, \tmp |
| addeq \irqnr, \irqnr, #4 |
| |
| movs \tmp, \irqstat, lsl #2 |
| movne \irqstat, \tmp |
| addeq \irqnr, \irqnr, #2 |
| |
| movs \tmp, \irqstat, lsl #1 |
| addeq \irqnr, \irqnr, #1 |
| orrs \base, \base, #1 |
| |
| 1002: |
| .endm |