ide.h

优龙2410linux2.6.8内核源代码

/*
 * linux/include/asm-arm/arch-sa1100/ide.h
 *
 * Copyright (c) 1998 Hugo Fiennes & Nicolas Pitre
 *
 * 18-aug-2000: Cleanup by Erik Mouw ([e-mail])
 *              Get rid of the special ide_init_hwif_ports() functions
 *              and make a generalised function that can be used by all
 *              architectures.
 */

#include <linux/config.h>
#include <asm/irq.h>
#include <asm/hardware.h>
#include <asm/mach-types.h>

#ifdef CONFIG_ARCH_FS_PXA255_V30
  #define	PXA255_IDE_BASE		0x04000020
  #define	PXA255_IDE_CTL_BASE	0x04000010
#else
  #define	PXA255_IDE_BASE		0x04e00000
  #define	PXA255_IDE_CTL_BASE	0x04d00000
#endif

/*
 * 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_spc_init_ports(hw_regs_t *hw, unsigned long data_port,
				       unsigned long ctrl_port, int *irq)
{
	unsigned long reg = data_port;
	int i;
	int regincr = 1 << 1;

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

	for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
		hw->io_ports[i] = reg;
		reg += regincr;
	}

	hw->io_ports[IDE_CONTROL_OFFSET] = 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)
{
   if (machine_is_lubbock()) {
        hw_regs_t hw;
   	unsigned long ide_base, ide_ctl_base;
	int reg_ret;

        /* Enable GPIO as interrupt line */
	set_irq_type(IRQ_GPIO(32), IRQT_RISING);

	ide_base = (unsigned long)ioremap(PXA255_IDE_BASE, 0x00100000);
	if(!ide_base) {
		printk(KERN_ERR "fail to remap base address for ide!\n");
		return;
	}
	ide_ctl_base = (unsigned long)ioremap(PXA255_IDE_CTL_BASE, 0x00100000);
	if(!ide_ctl_base) {
		printk(KERN_ERR "fail to remap control base address for ide!\n");
		iounmap((void *)ide_base);
		return;
	}

        /* init the interface */
	ide_spc_init_ports(&hw, ide_base, ide_base+0x0c, NULL);
        hw.irq = IRQ_GPIO(32);
	reg_ret = ide_register_hw(&hw, NULL);
//	printk("ide_register_hw = %d\n", reg_ret);
    }
}