| /* | |
| * linux/include/asm-arm/arch-ep93xx/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 <asm/arch/ep93xx-regs.h> | |
| .macro disable_fiq | |
| .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 |