projects / mirror_ubuntu-focal-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * include/asm-arm/arch-cl7500/irq.h | |
| 3 | * | |
| 4 | * Copyright (C) 1996 Russell King | |
| 5 | * Copyright (C) 1999, 2001 Nexus Electronics Ltd. | |
| 6 | * | |
| 7 | * Changelog: | |
| 8 | * 10-10-1996 RMK Brought up to date with arch-sa110eval | |
| 9 | * 22-08-1998 RMK Restructured IRQ routines | |
| 10 | * 11-08-1999 PJB Created ARM7500 version, derived from RiscPC code | |
| 11 | */ | |
| 12 | ||
| 13 | #include <asm/hardware/iomd.h> | |
| 14 | #include <asm/io.h> | |
| 15 | ||
| 16 | static inline int fixup_irq(unsigned int irq) | |
| 17 | { | |
| 18 | if (irq == IRQ_ISA) { | |
| 19 | int isabits = *((volatile unsigned int *)0xe002b700); | |
| 20 | if (isabits == 0) { | |
| 21 | printk("Spurious ISA IRQ!\n"); | |
| 22 | return irq; | |
| 23 | } | |
| 24 | irq = IRQ_ISA_BASE; | |
| 25 | while (!(isabits & 1)) { | |
| 26 | irq++; | |
| 27 | isabits >>= 1; | |
| 28 | } | |
| 29 | } | |
| 30 | ||
| 31 | return irq; | |
| 32 | } |