projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 794d15b2 | 1 | /* |
| a09e64fb | 2 | * arch/arm/mach-mv78xx0/include/mach/entry-macro.S |
| 794d15b2 SS |
3 | * |
| 4 | * Low-level IRQ helper macros for Marvell MV78xx0 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 | ||
| fdd8b079 | 11 | #include <mach/bridge-regs.h> |
| 794d15b2 SS |
12 | |
| 13 | .macro disable_fiq | |
| 14 | .endm | |
| 15 | ||
| 16 | .macro arch_ret_to_user, tmp1, tmp2 | |
| 17 | .endm | |
| 18 | ||
| 19 | .macro get_irqnr_preamble, base, tmp | |
| 20 | ldr \base, =IRQ_VIRT_BASE | |
| 21 | .endm | |
| 22 | ||
| 23 | .macro get_irqnr_and_base, irqnr, irqstat, base, tmp | |
| 24 | @ check low interrupts | |
| 25 | ldr \irqstat, [\base, #IRQ_CAUSE_LOW_OFF] | |
| 26 | ldr \tmp, [\base, #IRQ_MASK_LOW_OFF] | |
| 27 | mov \irqnr, #31 | |
| 28 | ands \irqstat, \irqstat, \tmp | |
| 1f8081f5 | 29 | bne 1001f |
| 794d15b2 SS |
30 | |
| 31 | @ if no low interrupts set, check high interrupts | |
| 1f8081f5 LB |
32 | ldr \irqstat, [\base, #IRQ_CAUSE_HIGH_OFF] |
| 33 | ldr \tmp, [\base, #IRQ_MASK_HIGH_OFF] | |
| 34 | mov \irqnr, #63 | |
| 35 | ands \irqstat, \irqstat, \tmp | |
| 36 | bne 1001f | |
| 37 | ||
| 38 | @ if no high interrupts set, check error interrupts | |
| 39 | ldr \irqstat, [\base, #IRQ_CAUSE_ERR_OFF] | |
| 40 | ldr \tmp, [\base, #IRQ_MASK_ERR_OFF] | |
| 41 | mov \irqnr, #95 | |
| 42 | ands \irqstat, \irqstat, \tmp | |
| 794d15b2 SS |
43 | |
| 44 | @ find first active interrupt source | |
| 1f8081f5 | 45 | 1001: clzne \irqstat, \irqstat |
| 794d15b2 SS |
46 | subne \irqnr, \irqnr, \irqstat |
| 47 | .endm |