projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 | 1 | /* |
| a09e64fb | 2 | * arch/arm/mach-integrator/include/mach/entry-macro.S |
| 1da177e4 LT |
3 | * |
| 4 | * Low-level IRQ helper macros for Integrator 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> |
| a09e64fb | 12 | #include <mach/irqs.h> |
| 1da177e4 | 13 | |
| f80dff9d DW |
14 | .macro get_irqnr_preamble, base, tmp |
| 15 | .endm | |
| 16 | ||
| 1da177e4 LT |
17 | .macro get_irqnr_and_base, irqnr, irqstat, base, tmp |
| 18 | /* FIXME: should not be using soo many LDRs here */ | |
| 19 | ldr \base, =IO_ADDRESS(INTEGRATOR_IC_BASE) | |
| 20 | mov \irqnr, #IRQ_PIC_START | |
| 21 | ldr \irqstat, [\base, #IRQ_STATUS] @ get masked status | |
| 22 | ldr \base, =IO_ADDRESS(INTEGRATOR_HDR_BASE) | |
| 23 | teq \irqstat, #0 | |
| 24 | ldreq \irqstat, [\base, #(INTEGRATOR_HDR_IC_OFFSET+IRQ_STATUS)] | |
| 25 | moveq \irqnr, #IRQ_CIC_START | |
| 26 | ||
| 27 | 1001: tst \irqstat, #15 | |
| 28 | bne 1002f | |
| 29 | add \irqnr, \irqnr, #4 | |
| 30 | movs \irqstat, \irqstat, lsr #4 | |
| 31 | bne 1001b | |
| 32 | 1002: tst \irqstat, #1 | |
| 33 | bne 1003f | |
| 34 | add \irqnr, \irqnr, #1 | |
| 35 | movs \irqstat, \irqstat, lsr #1 | |
| 36 | bne 1002b | |
| 37 | 1003: /* EQ will be set if no irqs pending */ | |
| 38 | .endm | |
| 39 |