/* * drivers/ide/ide-h8300.c * H8/300 generic IDE interface */#include <linux/init.h>#include <linux/ide.h>#include <linux/config.h>#include <asm/io.h>#include <asm/irq.h>#define bswap(d) \({					\	u16 r;				\	__asm__("mov.b %w1,r1h\n\t"	\		"mov.b %x1,r1l\n\t"	\		"mov.w r1,%0"		\		:"=r"(r)		\		:"r"(d)			\		:"er1");		\	(r);				\})static void mm_outw(u16 d, unsigned long a){	__asm__("mov.b %w0,r2h\n\t"		"mov.b %x0,r2l\n\t"		"mov.w r2,@%1"		:		:"r"(d),"r"(a)		:"er2");}static u16 mm_inw(unsigned long a){	register u16 r __asm__("er0");	__asm__("mov.w @%1,r2\n\t"		"mov.b r2l,%x0\n\t"		"mov.b r2h,%w0"		:"=r"(r)		:"r"(a)		:"er2");	return r;}static void mm_outsw(unsigned long addr, void *buf, u32 len){	unsigned short *bp = (unsigned short *)buf;	for (; len > 0; len--, bp++)		*(volatile u16 *)addr = bswap(*bp);}static void mm_insw(unsigned long addr, void *buf, u32 len){	unsigned short *bp = (unsigned short *)buf;	for (; len > 0; len--, bp++)		*bp = bswap(*(volatile u16 *)addr);}#define H8300_IDE_GAP (2)static inline void hw_setup(hw_regs_t *hw){	int i;	memset(hw, 0, sizeof(hw_regs_t));	for (i = 0; i <= IDE_STATUS_OFFSET; i++)		hw->io_ports[i] = CONFIG_H8300_IDE_BASE + H8300_IDE_GAP*i;	hw->io_ports[IDE_CONTROL_OFFSET] = CONFIG_H8300_IDE_ALT;	hw->irq = EXT_IRQ0 + CONFIG_H8300_IDE_IRQ;	hw->dma = NO_DMA;	hw->chipset = ide_generic;}static inline void hwif_setup(ide_hwif_t *hwif){	default_hwif_iops(hwif);	hwif->mmio  = 2;	hwif->OUTW  = mm_outw;	hwif->OUTSW = mm_outsw;	hwif->INW   = mm_inw;	hwif->INSW  = mm_insw;	hwif->OUTL  = NULL;	hwif->INL   = NULL;	hwif->OUTSL = NULL;	hwif->INSL  = NULL;}void __init h8300_ide_init(void){	hw_regs_t hw;	ide_hwif_t *hwif;	int idx;	if (!request_region(CONFIG_H8300_IDE_BASE, H8300_IDE_GAP*8, "ide-h8300"))		goto out_busy;	if (!request_region(CONFIG_H8300_IDE_ALT, H8300_IDE_GAP, "ide-h8300")) {		release_region(CONFIG_H8300_IDE_BASE, H8300_IDE_GAP*8);		goto out_busy;	}	hw_setup(&hw);	/* register if */	idx = ide_register_hw(&hw, &hwif);	if (idx == -1) {		printk(KERN_ERR "ide-h8300: IDE I/F register failed\n");		return;	}	hwif_setup(hwif);	printk(KERN_INFO "ide%d: H8/300 generic IDE interface\n", idx);	return;out_busy:	printk(KERN_ERR "ide-h8300: IDE I/F resource already used.\n");}