| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame^] | 1 | /* |
| 2 | * Low-level IRQ helper macros for Gemini platform. |
| 3 | * |
| 4 | * Copyright (C) 2001-2006 Storlink, Corp. |
| 5 | * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> |
| 6 | * |
| 7 | * This file is licensed under the terms of the GNU General Public |
| 8 | * License version 2. This program is licensed "as is" without any |
| 9 | * warranty of any kind, whether express or implied. |
| 10 | */ |
| 11 | #include <mach/hardware.h> |
| 12 | |
| 13 | #define IRQ_STATUS 0x14 |
| 14 | |
| 15 | .macro get_irqnr_preamble, base, tmp |
| 16 | .endm |
| 17 | |
| 18 | .macro get_irqnr_and_base, irqnr, irqstat, base, tmp |
| 19 | ldr \irqstat, =IO_ADDRESS(GEMINI_INTERRUPT_BASE + IRQ_STATUS) |
| 20 | ldr \irqnr, [\irqstat] |
| 21 | cmp \irqnr, #0 |
| 22 | beq 2313f |
| 23 | mov \tmp, \irqnr |
| 24 | mov \irqnr, #0 |
| 25 | 2312: |
| 26 | tst \tmp, #1 |
| 27 | bne 2313f |
| 28 | add \irqnr, \irqnr, #1 |
| 29 | mov \tmp, \tmp, lsr #1 |
| 30 | cmp \irqnr, #31 |
| 31 | bcc 2312b |
| 32 | 2313: |
| 33 | .endm |