| Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm/mach-integrator/include/mach/entry-macro.S |
| 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 | */ |
| 10 | #include <mach/hardware.h> |
| Russell King | a285edc | 2010-01-14 19:59:37 +0000 | [diff] [blame] | 11 | #include <mach/platform.h> |
| Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 12 | #include <mach/irqs.h> |
| 13 | |
| Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 14 | .macro get_irqnr_preamble, base, tmp |
| 15 | .endm |
| 16 | |
| Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 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 | |