| Alessandro Rubini | 28ad94e | 2009-07-02 19:06:47 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Low-level IRQ helper macros for Nomadik platforms |
| 3 | * |
| 4 | * This file is licensed under the terms of the GNU General Public |
| 5 | * License version 2. This program is licensed "as is" without any |
| 6 | * warranty of any kind, whether express or implied. |
| 7 | */ |
| 8 | |
| 9 | #include <mach/hardware.h> |
| 10 | #include <mach/irqs.h> |
| 11 | |
| 12 | .macro disable_fiq |
| 13 | .endm |
| 14 | |
| 15 | .macro get_irqnr_preamble, base, tmp |
| 16 | ldr \base, =IO_ADDRESS(NOMADIK_IC_BASE) |
| 17 | .endm |
| 18 | |
| 19 | .macro arch_ret_to_user, tmp1, tmp2 |
| 20 | .endm |
| 21 | |
| 22 | .macro get_irqnr_and_base, irqnr, irqstat, base, tmp |
| 23 | |
| 24 | /* This stanza gets the irq mask from one of two status registers */ |
| 25 | mov \irqnr, #0 |
| 26 | ldr \irqstat, [\base, #VIC_REG_IRQSR0] @ get masked status |
| 27 | cmp \irqstat, #0 |
| 28 | bne 1001f |
| 29 | add \irqnr, \irqnr, #32 |
| 30 | ldr \irqstat, [\base, #VIC_REG_IRQSR1] @ get masked status |
| 31 | |
| 32 | 1001: tst \irqstat, #15 |
| 33 | bne 1002f |
| 34 | add \irqnr, \irqnr, #4 |
| 35 | movs \irqstat, \irqstat, lsr #4 |
| 36 | bne 1001b |
| 37 | 1002: tst \irqstat, #1 |
| 38 | bne 1003f |
| 39 | add \irqnr, \irqnr, #1 |
| 40 | movs \irqstat, \irqstat, lsr #1 |
| 41 | bne 1002b |
| 42 | 1003: /* EQ will be set if no irqs pending */ |
| 43 | .endm |