git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 | 1 | /* |
| a09e64fb | 2 | * arch/arm/mach-versatile/include/mach/entry-macro.S |
| 1da177e4 LT |
3 | * |
| 4 | * Low-level IRQ helper macros for Versatile 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 | */ | |
| a09e64fb | 10 | #include <mach/hardware.h> |
| a285edcf | 11 | #include <mach/platform.h> |
| fa0fe48f | 12 | #include <asm/hardware/vic.h> |
| 78ff18a4 RK |
13 | |
| 14 | .macro disable_fiq | |
| 1da177e4 LT |
15 | .endm |
| 16 | ||
| f80dff9d | 17 | .macro get_irqnr_preamble, base, tmp |
| 641e7912 | 18 | ldr \base, =IO_ADDRESS(VERSATILE_VIC_BASE) |
| f80dff9d DW |
19 | .endm |
| 20 | ||
| 21 | .macro arch_ret_to_user, tmp1, tmp2 | |
| 22 | .endm | |
| 23 | ||
| 1da177e4 | 24 | .macro get_irqnr_and_base, irqnr, irqstat, base, tmp |
| 1da177e4 LT |
25 | ldr \irqstat, [\base, #VIC_IRQ_STATUS] @ get masked status |
| 26 | mov \irqnr, #0 | |
| 27 | teq \irqstat, #0 | |
| 28 | beq 1003f | |
| 29 | ||
| 30 | 1001: tst \irqstat, #15 | |
| 31 | bne 1002f | |
| 32 | add \irqnr, \irqnr, #4 | |
| 33 | movs \irqstat, \irqstat, lsr #4 | |
| 34 | bne 1001b | |
| 35 | 1002: tst \irqstat, #1 | |
| 36 | bne 1003f | |
| 37 | add \irqnr, \irqnr, #1 | |
| 38 | movs \irqstat, \irqstat, lsr #1 | |
| 39 | bne 1002b | |
| 40 | 1003: /* EQ will be set if no irqs pending */ | |
| 41 | ||
| 42 | @ clz \irqnr, \irqstat | |
| 43 | @1003: /* EQ will be set if we reach MAXIRQNUM */ | |
| 44 | .endm | |
| 45 |