ide.h

《嵌入式系统设计与实例开发实验教材II：基于ARM9微处理器与Linux操作系统》IDE—CF卡模块读写实验

/*
 * linux/include/asm-arm/arch-s3c2410/ide.h
 *
 * by threewater<[e-mail]>
 *
 * derived from:
 * linux/include/asm-arm/arch-ebsa285/ide.h
 * Copyright (c) 1998 Russell King
 */

#include <asm/irq.h>
#include "S3C2410.h"

/*
 * Set up a hw structure for a specified data port, control port and IRQ.
 * This should follow whatever the default interface uses.
 */
static __inline__ void
ide_init_hwif_ports(hw_regs_t *hw, int data_port, int ctrl_port, int *irq)
{
	ide_ioreg_t reg = (ide_ioreg_t) data_port;
	int i;

	memset(hw, 0, sizeof(*hw));

	for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
		hw->io_ports[i] = reg;
		reg ++;
	}
	hw->io_ports[IDE_CONTROL_OFFSET] = (ide_ioreg_t) ctrl_port;
	if (irq)
		*irq = 0;
}

/*
 * Set up a hw structure for a specified data port, control port and IRQ.
 * This should follow whatever the default interface uses.
 * add by threewater for default ide hardware
 */
static __inline__ void
ide_init_default_hwif_ports(hw_regs_t *hw, int data_port, int ctrl_port, int *irq)
{
        ide_ioreg_t reg = (ide_ioreg_t) data_port;
        int i;

        memset(hw, 0, sizeof(*hw));

        for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
                hw->io_ports[i] = reg;
                reg += 2;
        }
        hw->io_ports[IDE_CONTROL_OFFSET] = (ide_ioreg_t) ctrl_port;
        if (irq)
                *irq = 0;
}

/*
 * This registers the standard ports for this architecture with the IDE
 * driver.
 */
static __inline__ void
ide_init_default_hwifs(void)
{
	hw_regs_t hw;

	BWSCON = ((BWSCON & ~(BWSCON_ST1 | BWSCON_WS1 | BWSCON_DW1)) |
		(BWSCON_ST1 | BWSCON_WS1 | BWSCON_DW(1, BWSCON_DW_16)));
	BANKCON1= BANKCON_Tacs4 | BANKCON_Tcos4 | BANKCON_Tacc14 |
		BANKCON_Toch4 | BANKCON_Tcah4 | BANKCON_Tacp6 | BANKCON_PMC1;

	//set_external_irq(IRQ_IDE, EXT_HIGHLEVEL, GPIO_PULLUP_DIS);
	set_external_irq(IRQ_IDE, EXT_RISING_EDGE, GPIO_PULLUP_DIS);

	ide_init_default_hwif_ports(&hw, IDE_BASE+0x20, IDE_BASE+0x10, NULL);
	hw.irq = IRQ_IDE;
	hw.dma = NO_DMA;
	ide_register_hw(&hw, NULL);
}