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- /*
- * include/asm-arm/arch-versatile/entry-macro.S
- *
- * Low-level IRQ helper macros for Versatile platforms
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
- #include <asm/hardware.h>
- .macro disable_fiq
- .endm
- .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
- ldr \base, =IO_ADDRESS(VERSATILE_VIC_BASE)
- ldr \irqstat, [\base, #VIC_IRQ_STATUS] @ get masked status
- mov \irqnr, #0
- teq \irqstat, #0
- beq 1003f
- 1001: tst \irqstat, #15
- bne 1002f
- add \irqnr, \irqnr, #4
- movs \irqstat, \irqstat, lsr #4
- bne 1001b
- 1002: tst \irqstat, #1
- bne 1003f
- add \irqnr, \irqnr, #1
- movs \irqstat, \irqstat, lsr #1
- bne 1002b
- 1003: /* EQ will be set if no irqs pending */
- @ clz \irqnr, \irqstat
- @1003: /* EQ will be set if we reach MAXIRQNUM */
- .endm
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