[mirror_ubuntu-zesty-kernel.git] / drivers / ide / h8300 / ide-h8300.c

/*
 * H8/300 generic IDE interface
 */

#include <linux/init.h>
#include <linux/ide.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->chipset = ide_generic;
}

static inline void hwif_setup(ide_hwif_t *hwif)
{
	default_hwif_iops(hwif);

	hwif->OUTW  = mm_outw;
	hwif->OUTSW = mm_outsw;
	hwif->INW   = mm_inw;
	hwif->INSW  = mm_insw;
	hwif->OUTSL = NULL;
	hwif->INSL  = NULL;
}

static int __init h8300_ide_init(void)
{
	hw_regs_t hw;
	ide_hwif_t *hwif;
	int index;
	u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };

	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);

	hwif = ide_find_port();
	if (hwif == NULL) {
		printk(KERN_ERR "ide-h8300: IDE I/F register failed\n");
		return -ENOENT;
	}

	index = hwif->index;
	ide_init_port_data(hwif, index);
	ide_init_port_hw(hwif, &hw);
	hwif_setup(hwif);
	hwif->host_flags = IDE_HFLAG_NO_IO_32BIT;
	printk(KERN_INFO "ide%d: H8/300 generic IDE interface\n", index);

	idx[0] = index;

	ide_device_add(idx, NULL);

	return 0;

out_busy:
	printk(KERN_ERR "ide-h8300: IDE I/F resource already used.\n");

	return -EBUSY;
}

module_init(h8300_ide_init);

MODULE_LICENSE("GPL");
Commit	Line	Data
1da177e4	1	/*
1da177e4 LT	2	* H8/300 generic IDE interface
	3	*/
	4
	5	#include <linux/init.h>
	6	#include <linux/ide.h>
1da177e4 LT	7
	8	#include <asm/io.h>
	9	#include <asm/irq.h>
	10
	11	#define bswap(d) \
	12	({ \
	13	u16 r; \
	14	__asm__("mov.b %w1,r1h\n\t" \
	15	"mov.b %x1,r1l\n\t" \
	16	"mov.w r1,%0" \
	17	:"=r"(r) \
	18	:"r"(d) \
	19	:"er1"); \
	20	(r); \
	21	})
	22
	23	static void mm_outw(u16 d, unsigned long a)
	24	{
	25	__asm__("mov.b %w0,r2h\n\t"
	26	"mov.b %x0,r2l\n\t"
	27	"mov.w r2,@%1"
	28	:
	29	:"r"(d),"r"(a)
	30	:"er2");
	31	}
	32
	33	static u16 mm_inw(unsigned long a)
	34	{
	35	register u16 r __asm__("er0");
	36	__asm__("mov.w @%1,r2\n\t"
	37	"mov.b r2l,%x0\n\t"
	38	"mov.b r2h,%w0"
	39	:"=r"(r)
	40	:"r"(a)
	41	:"er2");
	42	return r;
	43	}
	44
	45	static void mm_outsw(unsigned long addr, void *buf, u32 len)
	46	{
	47	unsigned short bp = (unsigned short )buf;
	48	for (; len > 0; len--, bp++)
	49	(volatile u16 )addr = bswap(*bp);
	50	}
	51
	52	static void mm_insw(unsigned long addr, void *buf, u32 len)
	53	{
	54	unsigned short bp = (unsigned short )buf;
	55	for (; len > 0; len--, bp++)
	56	bp = bswap((volatile u16 *)addr);
	57	}
	58
	59	#define H8300_IDE_GAP (2)
	60
	61	static inline void hw_setup(hw_regs_t *hw)
	62	{
	63	int i;
	64
	65	memset(hw, 0, sizeof(hw_regs_t));
	66	for (i = 0; i <= IDE_STATUS_OFFSET; i++)
	67	hw->io_ports[i] = CONFIG_H8300_IDE_BASE + H8300_IDE_GAP*i;
	68	hw->io_ports[IDE_CONTROL_OFFSET] = CONFIG_H8300_IDE_ALT;
	69	hw->irq = EXT_IRQ0 + CONFIG_H8300_IDE_IRQ;
1da177e4 LT	70	hw->chipset = ide_generic;
	71	}
	72
	73	static inline void hwif_setup(ide_hwif_t *hwif)
	74	{
	75	default_hwif_iops(hwif);
	76
1da177e4 LT	77	hwif->OUTW = mm_outw;
	78	hwif->OUTSW = mm_outsw;
	79	hwif->INW = mm_inw;
	80	hwif->INSW = mm_insw;
1da177e4 LT	81	hwif->OUTSL = NULL;
	82	hwif->INSL = NULL;
	83	}
	84
ade2daf9	85	static int __init h8300_ide_init(void)
1da177e4 LT	86	{
	87	hw_regs_t hw;
	88	ide_hwif_t *hwif;
cbb010c1	89	int index;
8ac4ce74	90	u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
1da177e4 LT	91
	92	if (!request_region(CONFIG_H8300_IDE_BASE, H8300_IDE_GAP*8, "ide-h8300"))
	93	goto out_busy;
	94	if (!request_region(CONFIG_H8300_IDE_ALT, H8300_IDE_GAP, "ide-h8300")) {
	95	release_region(CONFIG_H8300_IDE_BASE, H8300_IDE_GAP*8);
	96	goto out_busy;
	97	}
	98
	99	hw_setup(&hw);
	100
59bff5ba	101	hwif = ide_find_port();
cbb010c1	102	if (hwif == NULL) {
1da177e4	103	printk(KERN_ERR "ide-h8300: IDE I/F register failed\n");
ade2daf9	104	return -ENOENT;
1da177e4 LT	105	}
1da177e4 LT	106
cbb010c1 BZ	107	index = hwif->index;
	108	ide_init_port_data(hwif, index);
	109	ide_init_port_hw(hwif, &hw);
1da177e4	110	hwif_setup(hwif);
430c5d26	111	hwif->host_flags = IDE_HFLAG_NO_IO_32BIT;
cbb010c1	112	printk(KERN_INFO "ide%d: H8/300 generic IDE interface\n", index);
8ac4ce74 BZ	113
	114	idx[0] = index;
	115
c413b9b9	116	ide_device_add(idx, NULL);
8ac4ce74	117
ade2daf9	118	return 0;
1da177e4 LT	119
	120	out_busy:
	121	printk(KERN_ERR "ide-h8300: IDE I/F resource already used.\n");
ade2daf9 BZ	122
ade2daf9 BZ	123	return -EBUSY;
1da177e4	124	}
ade2daf9 BZ	125
ade2daf9 BZ	126	module_init(h8300_ide_init);
f95dc320 AB	127
f95dc320 AB	128	MODULE_LICENSE("GPL");