| /* |
| * include/asm-arm/arch-cl7500/irq.h |
| * |
| * Copyright (C) 1996 Russell King |
| * Copyright (C) 1999, 2001 Nexus Electronics Ltd. |
| * |
| * Changelog: |
| * 10-10-1996 RMK Brought up to date with arch-sa110eval |
| * 22-08-1998 RMK Restructured IRQ routines |
| * 11-08-1999 PJB Created ARM7500 version, derived from RiscPC code |
| */ |
| |
| #include <asm/hardware/iomd.h> |
| #include <asm/io.h> |
| |
| static inline int fixup_irq(unsigned int irq) |
| { |
| if (irq == IRQ_ISA) { |
| int isabits = *((volatile unsigned int *)0xe002b700); |
| if (isabits == 0) { |
| printk("Spurious ISA IRQ!\n"); |
| return irq; |
| } |
| irq = IRQ_ISA_BASE; |
| while (!(isabits & 1)) { |
| irq++; |
| isabits >>= 1; |
| } |
| } |
| |
| return irq; |
| } |
