irq.h
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上传日期:2013-04-10
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文件大小:2k
- /*
- * include/asm-arm/arch-l7200/irq.h
- *
- * Copyright (C) 2000 Rob Scott (rscott@mtrob.fdns.ne
- * Steve Hill (sjhill@cotw.com)
- *
- * Changelog:
- * 01-02-2000 RS Created l7200 version, derived from ebsa110 code
- * 04-15-2000 RS Made dependent on hardware.h
- * 05-05-2000 SJH Complete rewrite
- */
- #include <asm/arch/hardware.h>
- /*
- * IRQ base register
- */
- #define IRQ_BASE (IO_BASE_2 + 0x1000)
- /*
- * Normal IRQ registers
- */
- #define IRQ_STATUS (*(volatile unsigned long *) (IRQ_BASE + 0x000))
- #define IRQ_RAWSTATUS (*(volatile unsigned long *) (IRQ_BASE + 0x004))
- #define IRQ_ENABLE (*(volatile unsigned long *) (IRQ_BASE + 0x008))
- #define IRQ_ENABLECLEAR (*(volatile unsigned long *) (IRQ_BASE + 0x00c))
- #define IRQ_SOFT (*(volatile unsigned long *) (IRQ_BASE + 0x010))
- #define IRQ_SOURCESEL (*(volatile unsigned long *) (IRQ_BASE + 0x018))
- /*
- * Fast IRQ registers
- */
- #define FIQ_STATUS (*(volatile unsigned long *) (IRQ_BASE + 0x100))
- #define FIQ_RAWSTATUS (*(volatile unsigned long *) (IRQ_BASE + 0x104))
- #define FIQ_ENABLE (*(volatile unsigned long *) (IRQ_BASE + 0x108))
- #define FIQ_ENABLECLEAR (*(volatile unsigned long *) (IRQ_BASE + 0x10c))
- #define FIQ_SOFT (*(volatile unsigned long *) (IRQ_BASE + 0x110))
- #define FIQ_SOURCESEL (*(volatile unsigned long *) (IRQ_BASE + 0x118))
- #define fixup_irq(x) (x)
- static void l7200_mask_irq(unsigned int irq)
- {
- IRQ_ENABLECLEAR = 1 << irq;
- }
- static void l7200_unmask_irq(unsigned int irq)
- {
- IRQ_ENABLE = 1 << irq;
- }
-
- static __inline__ void irq_init_irq(void)
- {
- int irq;
- IRQ_ENABLECLEAR = 0xffffffff; /* clear all interrupt enables */
- FIQ_ENABLECLEAR = 0xffffffff; /* clear all fast interrupt enables */
- for (irq = 0; irq < NR_IRQS; irq++) {
- irq_desc[irq].valid = 1;
- irq_desc[irq].probe_ok = 1;
- irq_desc[irq].mask_ack = l7200_mask_irq;
- irq_desc[irq].mask = l7200_mask_irq;
- irq_desc[irq].unmask = l7200_unmask_irq;
- }
- init_FIQ();
- }