arch/arm/mach-footbridge/common.c

Source file repositories/reference/linux-study-clean/arch/arm/mach-footbridge/common.c

File Facts

System
Linux kernel
Corpus path
arch/arm/mach-footbridge/common.c
Extension
.c
Size
6101 bytes
Lines
281
Domain
Architecture Layer
Bucket
arch/arm
Inferred role
Architecture Layer: exported/initcall integration point
Status
integration implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
/*
 *  linux/arch/arm/mach-footbridge/common.c
 *
 *  Copyright (C) 1998-2000 Russell King, Dave Gilbert.
 */
#include <linux/module.h>
#include <linux/types.h>
#include <linux/mm.h>
#include <linux/ioport.h>
#include <linux/list.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/spinlock.h>
#include <linux/dma-direct.h>
#include <video/vga.h>

#include <asm/page.h>
#include <asm/irq.h>
#include <asm/mach-types.h>
#include <asm/setup.h>
#include <asm/system_misc.h>
#include <asm/hardware/dec21285.h>

#include <asm/mach/irq.h>
#include <asm/mach/map.h>
#include <asm/mach/pci.h>

#include "common.h"

#include <mach/hardware.h>
#include <mach/irqs.h>
#include <asm/hardware/dec21285.h>

static int dc21285_get_irq(void)
{
	void __iomem *irqstatus = (void __iomem *)CSR_IRQ_STATUS;
	u32 mask = readl(irqstatus);

	if (mask & IRQ_MASK_SDRAMPARITY)
		return IRQ_SDRAMPARITY;

	if (mask & IRQ_MASK_UART_RX)
		return IRQ_CONRX;

	if (mask & IRQ_MASK_DMA1)
		return IRQ_DMA1;

	if (mask & IRQ_MASK_DMA2)
		return IRQ_DMA2;

	if (mask & IRQ_MASK_IN0)
		return IRQ_IN0;

	if (mask & IRQ_MASK_IN1)
		return IRQ_IN1;

	if (mask & IRQ_MASK_IN2)
		return IRQ_IN2;

	if (mask & IRQ_MASK_IN3)
		return IRQ_IN3;

	if (mask & IRQ_MASK_PCI)
		return IRQ_PCI;

	if (mask & IRQ_MASK_DOORBELLHOST)
		return IRQ_DOORBELLHOST;

	if (mask & IRQ_MASK_I2OINPOST)
		return IRQ_I2OINPOST;

	if (mask & IRQ_MASK_TIMER1)
		return IRQ_TIMER1;

	if (mask & IRQ_MASK_TIMER2)
		return IRQ_TIMER2;

	if (mask & IRQ_MASK_TIMER3)
		return IRQ_TIMER3;

	if (mask & IRQ_MASK_UART_TX)
		return IRQ_CONTX;

	if (mask & IRQ_MASK_PCI_ABORT)
		return IRQ_PCI_ABORT;

	if (mask & IRQ_MASK_PCI_SERR)
		return IRQ_PCI_SERR;

Annotation

Implementation Notes