[linux.git] / drivers / ide / 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 DRV_NAME "ide-h8300"

#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_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);
}

static void h8300_input_data(ide_drive_t *drive, struct ide_cmd *cmd,
			     void *buf, unsigned int len)
{
	mm_insw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2);
}

static void h8300_output_data(ide_drive_t *drive, struct ide_cmd *cmd,
			      void *buf, unsigned int len)
{
	mm_outsw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2);
}

static const struct ide_tp_ops h8300_tp_ops = {
	.exec_command		= ide_exec_command,
	.read_status		= ide_read_status,
	.read_altstatus		= ide_read_altstatus,
	.write_devctl		= ide_write_devctl,

	.dev_select		= ide_dev_select,
	.tf_load		= ide_tf_load,
	.tf_read		= ide_tf_read,

	.input_data		= h8300_input_data,
	.output_data		= h8300_output_data,
};

#define H8300_IDE_GAP (2)

static inline void hw_setup(struct ide_hw *hw)
{
	int i;

	memset(hw, 0, sizeof(*hw));
	for (i = 0; i <= 7; i++)
		hw->io_ports_array[i] = CONFIG_H8300_IDE_BASE + H8300_IDE_GAP*i;
	hw->io_ports.ctl_addr = CONFIG_H8300_IDE_ALT;
	hw->irq = EXT_IRQ0 + CONFIG_H8300_IDE_IRQ;
}

static const struct ide_port_info h8300_port_info = {
	.tp_ops			= &h8300_tp_ops,
	.host_flags		= IDE_HFLAG_NO_IO_32BIT | IDE_HFLAG_NO_DMA,
	.chipset		= ide_generic,
};

static int __init h8300_ide_init(void)
{
	struct ide_hw hw, *hws[] = { &hw };

	printk(KERN_INFO DRV_NAME ": H8/300 generic IDE interface\n");

	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);

	return ide_host_add(&h8300_port_info, hws, 1, NULL);

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
eb3aff55 BZ	11	#define DRV_NAME "ide-h8300"
eb3aff55 BZ	12
1da177e4 LT	13	#define bswap(d) \
	14	({ \
	15	u16 r; \
	16	__asm__("mov.b %w1,r1h\n\t" \
	17	"mov.b %x1,r1l\n\t" \
	18	"mov.w r1,%0" \
	19	:"=r"(r) \
	20	:"r"(d) \
	21	:"er1"); \
	22	(r); \
	23	})
	24
1da177e4 LT	25	static void mm_outsw(unsigned long addr, void *buf, u32 len)
	26	{
	27	unsigned short bp = (unsigned short )buf;
	28	for (; len > 0; len--, bp++)
	29	(volatile u16 )addr = bswap(*bp);
	30	}
	31
	32	static void mm_insw(unsigned long addr, void *buf, u32 len)
	33	{
	34	unsigned short bp = (unsigned short )buf;
	35	for (; len > 0; len--, bp++)
	36	bp = bswap((volatile u16 *)addr);
	37	}
	38
adb1af98	39	static void h8300_input_data(ide_drive_t drive, struct ide_cmd cmd,
f04ff9cb BZ	40	void *buf, unsigned int len)
	41	{
	42	mm_insw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2);
	43	}
	44
adb1af98	45	static void h8300_output_data(ide_drive_t drive, struct ide_cmd cmd,
f04ff9cb BZ	46	void *buf, unsigned int len)
	47	{
	48	mm_outsw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2);
	49	}
	50
374e042c BZ	51	static const struct ide_tp_ops h8300_tp_ops = {
	52	.exec_command = ide_exec_command,
	53	.read_status = ide_read_status,
	54	.read_altstatus = ide_read_altstatus,
ecf3a31d	55	.write_devctl = ide_write_devctl,
374e042c	56
abb596b2	57	.dev_select = ide_dev_select,
cfd30daa SS	58	.tf_load = ide_tf_load,
cfd30daa SS	59	.tf_read = ide_tf_read,
374e042c BZ	60
	61	.input_data = h8300_input_data,
	62	.output_data = h8300_output_data,
	63	};
	64
1da177e4 LT	65	#define H8300_IDE_GAP (2)
1da177e4 LT	66
9f36d314	67	static inline void hw_setup(struct ide_hw *hw)
1da177e4 LT	68	{
	69	int i;
	70
9f36d314	71	memset(hw, 0, sizeof(*hw));
4c3032d8 BZ	72	for (i = 0; i <= 7; i++)
	73	hw->io_ports_array[i] = CONFIG_H8300_IDE_BASE + H8300_IDE_GAP*i;
	74	hw->io_ports.ctl_addr = CONFIG_H8300_IDE_ALT;
1da177e4	75	hw->irq = EXT_IRQ0 + CONFIG_H8300_IDE_IRQ;
1da177e4 LT	76	}
1da177e4 LT	77
f81eb80b	78	static const struct ide_port_info h8300_port_info = {
374e042c	79	.tp_ops = &h8300_tp_ops,
f81eb80b	80	.host_flags = IDE_HFLAG_NO_IO_32BIT \| IDE_HFLAG_NO_DMA,
29e52cf7	81	.chipset = ide_generic,
f81eb80b BZ	82	};
f81eb80b BZ	83
ade2daf9	84	static int __init h8300_ide_init(void)
1da177e4	85	{
9f36d314	86	struct ide_hw hw, *hws[] = { &hw };
1da177e4	87
740c397c BZ	88	printk(KERN_INFO DRV_NAME ": H8/300 generic IDE interface\n");
740c397c BZ	89
1da177e4 LT	90	if (!request_region(CONFIG_H8300_IDE_BASE, H8300_IDE_GAP*8, "ide-h8300"))
	91	goto out_busy;
	92	if (!request_region(CONFIG_H8300_IDE_ALT, H8300_IDE_GAP, "ide-h8300")) {
	93	release_region(CONFIG_H8300_IDE_BASE, H8300_IDE_GAP*8);
	94	goto out_busy;
	95	}
	96
	97	hw_setup(&hw);
	98
dca39830	99	return ide_host_add(&h8300_port_info, hws, 1, NULL);
1da177e4 LT	100
	101	out_busy:
	102	printk(KERN_ERR "ide-h8300: IDE I/F resource already used.\n");
ade2daf9 BZ	103
ade2daf9 BZ	104	return -EBUSY;
1da177e4	105	}
ade2daf9 BZ	106
ade2daf9 BZ	107	module_init(h8300_ide_init);
f95dc320 AB	108
f95dc320 AB	109	MODULE_LICENSE("GPL");