| Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm/mach-orion5x/include/mach/entry-macro.S |
| 3 | * |
| 4 | * Low-level IRQ helper macros for Orion platforms |
| 5 | * |
| 6 | * This file is licensed under the terms of the GNU General Public |
| 7 | * License version 2. This program is licensed "as is" without any |
| 8 | * warranty of any kind, whether express or implied. |
| 9 | */ |
| 10 | |
| Nicolas Pitre | fdd8b07 | 2009-04-22 20:08:17 +0100 | [diff] [blame] | 11 | #include <mach/bridge-regs.h> |
| Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 12 | |
| Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 13 | .macro get_irqnr_preamble, base, tmp |
| 14 | ldr \base, =MAIN_IRQ_CAUSE |
| 15 | .endm |
| 16 | |
| 17 | .macro get_irqnr_and_base, irqnr, irqstat, base, tmp |
| 18 | ldr \irqstat, [\base, #0] @ main cause |
| 19 | ldr \tmp, [\base, #(MAIN_IRQ_MASK - MAIN_IRQ_CAUSE)] @ main mask |
| 20 | mov \irqnr, #0 @ default irqnr |
| 21 | @ find cause bits that are unmasked |
| 22 | ands \irqstat, \irqstat, \tmp @ clear Z flag if any |
| 23 | clzne \irqnr, \irqstat @ calc irqnr |
| Nicolas Pitre | 4d2ec7e | 2015-11-22 22:44:19 -0500 | [diff] [blame] | 24 | rsbne \irqnr, \irqnr, #32 |
| Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 25 | .endm |