projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * include/asm-arm/arch-ixp4xx/entry-macro.S | |
| 3 | * | |
| 4 | * Low-level IRQ helper macros for IXP4xx-based 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 | */ | |
| 78ff18a4 | 10 | #include <asm/hardware.h> |
| 1da177e4 LT |
11 | |
| 12 | .macro disable_fiq | |
| 13 | .endm | |
| 14 | ||
| 15 | .macro get_irqnr_and_base, irqnr, irqstat, base, tmp | |
| 16 | ldr \irqstat, =(IXP4XX_INTC_BASE_VIRT+IXP4XX_ICIP_OFFSET) | |
| 17 | ldr \irqstat, [\irqstat] @ get interrupts | |
| 18 | cmp \irqstat, #0 | |
| 251b928c | 19 | beq 1001f @ upper IRQ? |
| 1da177e4 LT |
20 | clz \irqnr, \irqstat |
| 21 | mov \base, #31 | |
| 251b928c KT |
22 | sub \irqnr, \base, \irqnr |
| 23 | b 1002f @ lower IRQ being | |
| 24 | @ handled | |
| 1da177e4 LT |
25 | |
| 26 | 1001: | |
| 27 | /* | |
| 28 | * IXP465 has an upper IRQ status register | |
| 29 | */ | |
| 30 | #if defined(CONFIG_CPU_IXP46X) | |
| 1da177e4 LT |
31 | ldr \irqstat, =(IXP4XX_INTC_BASE_VIRT+IXP4XX_ICIP2_OFFSET) |
| 32 | ldr \irqstat, [\irqstat] @ get upper interrupts | |
| 33 | mov \irqnr, #63 | |
| 34 | clz \irqstat, \irqstat | |
| 35 | cmp \irqstat, #32 | |
| 36 | subne \irqnr, \irqnr, \irqstat | |
| 1da177e4 | 37 | #endif |
| 251b928c | 38 | 1002: |
| 1da177e4 LT |
39 | .endm |
| 40 | ||
| 41 |