[deliverable/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 h8300_tf_load(ide_drive_t *drive, struct ide_cmd *cmd)
{
	ide_hwif_t *hwif = drive->hwif;
	struct ide_io_ports *io_ports = &hwif->io_ports;
	struct ide_taskfile *tf = &cmd->tf;
	u8 HIHI = (cmd->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF;

	if (cmd->ftf_flags & IDE_FTFLAG_FLAGGED)
		HIHI = 0xFF;

	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
		outb(tf->hob_feature, io_ports->feature_addr);
	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
		outb(tf->hob_nsect, io_ports->nsect_addr);
	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
		outb(tf->hob_lbal, io_ports->lbal_addr);
	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
		outb(tf->hob_lbam, io_ports->lbam_addr);
	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
		outb(tf->hob_lbah, io_ports->lbah_addr);

	if (cmd->tf_flags & IDE_TFLAG_OUT_FEATURE)
		outb(tf->feature, io_ports->feature_addr);
	if (cmd->tf_flags & IDE_TFLAG_OUT_NSECT)
		outb(tf->nsect, io_ports->nsect_addr);
	if (cmd->tf_flags & IDE_TFLAG_OUT_LBAL)
		outb(tf->lbal, io_ports->lbal_addr);
	if (cmd->tf_flags & IDE_TFLAG_OUT_LBAM)
		outb(tf->lbam, io_ports->lbam_addr);
	if (cmd->tf_flags & IDE_TFLAG_OUT_LBAH)
		outb(tf->lbah, io_ports->lbah_addr);

	if (cmd->tf_flags & IDE_TFLAG_OUT_DEVICE)
		outb((tf->device & HIHI) | drive->select,
		     io_ports->device_addr);
}

static void h8300_tf_read(ide_drive_t *drive, struct ide_cmd *cmd)
{
	ide_hwif_t *hwif = drive->hwif;
	struct ide_io_ports *io_ports = &hwif->io_ports;
	struct ide_taskfile *tf = &cmd->tf;

	/* be sure we're looking at the low order bits */
	outb(ATA_DEVCTL_OBS, io_ports->ctl_addr);

	if (cmd->tf_flags & IDE_TFLAG_IN_ERROR)
		tf->error  = inb(io_ports->feature_addr);
	if (cmd->tf_flags & IDE_TFLAG_IN_NSECT)
		tf->nsect  = inb(io_ports->nsect_addr);
	if (cmd->tf_flags & IDE_TFLAG_IN_LBAL)
		tf->lbal   = inb(io_ports->lbal_addr);
	if (cmd->tf_flags & IDE_TFLAG_IN_LBAM)
		tf->lbam   = inb(io_ports->lbam_addr);
	if (cmd->tf_flags & IDE_TFLAG_IN_LBAH)
		tf->lbah   = inb(io_ports->lbah_addr);
	if (cmd->tf_flags & IDE_TFLAG_IN_DEVICE)
		tf->device = inb(io_ports->device_addr);

	if (cmd->tf_flags & IDE_TFLAG_LBA48) {
		outb(ATA_HOB | ATA_DEVCTL_OBS, io_ports->ctl_addr);

		if (cmd->tf_flags & IDE_TFLAG_IN_HOB_ERROR)
			tf->hob_error = inb(io_ports->feature_addr);
		if (cmd->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
			tf->hob_nsect = inb(io_ports->nsect_addr);
		if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
			tf->hob_lbal  = inb(io_ports->lbal_addr);
		if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
			tf->hob_lbam  = inb(io_ports->lbam_addr);
		if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
			tf->hob_lbah  = inb(io_ports->lbah_addr);
	}
}

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		= h8300_tf_load,
	.tf_read		= h8300_tf_read,

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

#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 <= 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;
	hw->chipset = ide_generic;
}

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,
};

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

	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, 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
22aa4b32	25	static void h8300_tf_load(ide_drive_t drive, struct ide_cmd cmd)
92fcaaa8 BZ	26	{
	27	ide_hwif_t *hwif = drive->hwif;
	28	struct ide_io_ports *io_ports = &hwif->io_ports;
22aa4b32 BZ	29	struct ide_taskfile *tf = &cmd->tf;
22aa4b32 BZ	30	u8 HIHI = (cmd->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF;
92fcaaa8	31
22aa4b32	32	if (cmd->ftf_flags & IDE_FTFLAG_FLAGGED)
92fcaaa8 BZ	33	HIHI = 0xFF;
92fcaaa8 BZ	34
22aa4b32	35	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
92fcaaa8	36	outb(tf->hob_feature, io_ports->feature_addr);
22aa4b32	37	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
92fcaaa8	38	outb(tf->hob_nsect, io_ports->nsect_addr);
22aa4b32	39	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
92fcaaa8	40	outb(tf->hob_lbal, io_ports->lbal_addr);
22aa4b32	41	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
92fcaaa8	42	outb(tf->hob_lbam, io_ports->lbam_addr);
22aa4b32	43	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
92fcaaa8 BZ	44	outb(tf->hob_lbah, io_ports->lbah_addr);
92fcaaa8 BZ	45
22aa4b32	46	if (cmd->tf_flags & IDE_TFLAG_OUT_FEATURE)
92fcaaa8	47	outb(tf->feature, io_ports->feature_addr);
22aa4b32	48	if (cmd->tf_flags & IDE_TFLAG_OUT_NSECT)
92fcaaa8	49	outb(tf->nsect, io_ports->nsect_addr);
22aa4b32	50	if (cmd->tf_flags & IDE_TFLAG_OUT_LBAL)
92fcaaa8	51	outb(tf->lbal, io_ports->lbal_addr);
22aa4b32	52	if (cmd->tf_flags & IDE_TFLAG_OUT_LBAM)
92fcaaa8	53	outb(tf->lbam, io_ports->lbam_addr);
22aa4b32	54	if (cmd->tf_flags & IDE_TFLAG_OUT_LBAH)
92fcaaa8 BZ	55	outb(tf->lbah, io_ports->lbah_addr);
92fcaaa8 BZ	56
22aa4b32	57	if (cmd->tf_flags & IDE_TFLAG_OUT_DEVICE)
7f612f27	58	outb((tf->device & HIHI) \| drive->select,
92fcaaa8 BZ	59	io_ports->device_addr);
	60	}
	61
22aa4b32	62	static void h8300_tf_read(ide_drive_t drive, struct ide_cmd cmd)
92fcaaa8 BZ	63	{
	64	ide_hwif_t *hwif = drive->hwif;
	65	struct ide_io_ports *io_ports = &hwif->io_ports;
22aa4b32	66	struct ide_taskfile *tf = &cmd->tf;
92fcaaa8	67
92fcaaa8	68	/* be sure we're looking at the low order bits */
4d74c3fc	69	outb(ATA_DEVCTL_OBS, io_ports->ctl_addr);
92fcaaa8	70
67625119 SS	71	if (cmd->tf_flags & IDE_TFLAG_IN_ERROR)
67625119 SS	72	tf->error = inb(io_ports->feature_addr);
22aa4b32	73	if (cmd->tf_flags & IDE_TFLAG_IN_NSECT)
92fcaaa8	74	tf->nsect = inb(io_ports->nsect_addr);
22aa4b32	75	if (cmd->tf_flags & IDE_TFLAG_IN_LBAL)
92fcaaa8	76	tf->lbal = inb(io_ports->lbal_addr);
22aa4b32	77	if (cmd->tf_flags & IDE_TFLAG_IN_LBAM)
92fcaaa8	78	tf->lbam = inb(io_ports->lbam_addr);
22aa4b32	79	if (cmd->tf_flags & IDE_TFLAG_IN_LBAH)
92fcaaa8	80	tf->lbah = inb(io_ports->lbah_addr);
22aa4b32	81	if (cmd->tf_flags & IDE_TFLAG_IN_DEVICE)
92fcaaa8 BZ	82	tf->device = inb(io_ports->device_addr);
92fcaaa8 BZ	83
22aa4b32	84	if (cmd->tf_flags & IDE_TFLAG_LBA48) {
4d74c3fc	85	outb(ATA_HOB \| ATA_DEVCTL_OBS, io_ports->ctl_addr);
92fcaaa8	86
67625119 SS	87	if (cmd->tf_flags & IDE_TFLAG_IN_HOB_ERROR)
67625119 SS	88	tf->hob_error = inb(io_ports->feature_addr);
22aa4b32	89	if (cmd->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
67625119	90	tf->hob_nsect = inb(io_ports->nsect_addr);
22aa4b32	91	if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
67625119	92	tf->hob_lbal = inb(io_ports->lbal_addr);
22aa4b32	93	if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
67625119	94	tf->hob_lbam = inb(io_ports->lbam_addr);
22aa4b32	95	if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
67625119	96	tf->hob_lbah = inb(io_ports->lbah_addr);
92fcaaa8 BZ	97	}
	98	}
	99
1da177e4 LT	100	static void mm_outsw(unsigned long addr, void *buf, u32 len)
	101	{
	102	unsigned short bp = (unsigned short )buf;
	103	for (; len > 0; len--, bp++)
	104	(volatile u16 )addr = bswap(*bp);
	105	}
	106
	107	static void mm_insw(unsigned long addr, void *buf, u32 len)
	108	{
	109	unsigned short bp = (unsigned short )buf;
	110	for (; len > 0; len--, bp++)
	111	bp = bswap((volatile u16 *)addr);
	112	}
	113
adb1af98	114	static void h8300_input_data(ide_drive_t drive, struct ide_cmd cmd,
f04ff9cb BZ	115	void *buf, unsigned int len)
	116	{
	117	mm_insw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2);
	118	}
	119
adb1af98	120	static void h8300_output_data(ide_drive_t drive, struct ide_cmd cmd,
f04ff9cb BZ	121	void *buf, unsigned int len)
	122	{
	123	mm_outsw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2);
	124	}
	125
374e042c BZ	126	static const struct ide_tp_ops h8300_tp_ops = {
	127	.exec_command = ide_exec_command,
	128	.read_status = ide_read_status,
	129	.read_altstatus = ide_read_altstatus,
ecf3a31d	130	.write_devctl = ide_write_devctl,
374e042c	131
abb596b2	132	.dev_select = ide_dev_select,
374e042c BZ	133	.tf_load = h8300_tf_load,
	134	.tf_read = h8300_tf_read,
	135
	136	.input_data = h8300_input_data,
	137	.output_data = h8300_output_data,
	138	};
	139
1da177e4 LT	140	#define H8300_IDE_GAP (2)
	141
	142	static inline void hw_setup(hw_regs_t *hw)
	143	{
	144	int i;
	145
	146	memset(hw, 0, sizeof(hw_regs_t));
4c3032d8 BZ	147	for (i = 0; i <= 7; i++)
	148	hw->io_ports_array[i] = CONFIG_H8300_IDE_BASE + H8300_IDE_GAP*i;
	149	hw->io_ports.ctl_addr = CONFIG_H8300_IDE_ALT;
1da177e4	150	hw->irq = EXT_IRQ0 + CONFIG_H8300_IDE_IRQ;
1da177e4 LT	151	hw->chipset = ide_generic;
	152	}
	153
f81eb80b	154	static const struct ide_port_info h8300_port_info = {
374e042c	155	.tp_ops = &h8300_tp_ops,
f81eb80b BZ	156	.host_flags = IDE_HFLAG_NO_IO_32BIT \| IDE_HFLAG_NO_DMA,
	157	};
	158
ade2daf9	159	static int __init h8300_ide_init(void)
1da177e4	160	{
c97c6aca	161	hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
1da177e4	162
740c397c BZ	163	printk(KERN_INFO DRV_NAME ": H8/300 generic IDE interface\n");
740c397c BZ	164
1da177e4 LT	165	if (!request_region(CONFIG_H8300_IDE_BASE, H8300_IDE_GAP*8, "ide-h8300"))
	166	goto out_busy;
	167	if (!request_region(CONFIG_H8300_IDE_ALT, H8300_IDE_GAP, "ide-h8300")) {
	168	release_region(CONFIG_H8300_IDE_BASE, H8300_IDE_GAP*8);
	169	goto out_busy;
	170	}
	171
	172	hw_setup(&hw);
	173
6f904d01	174	return ide_host_add(&h8300_port_info, hws, NULL);
1da177e4 LT	175
	176	out_busy:
	177	printk(KERN_ERR "ide-h8300: IDE I/F resource already used.\n");
ade2daf9 BZ	178
ade2daf9 BZ	179	return -EBUSY;
1da177e4	180	}
ade2daf9 BZ	181
ade2daf9 BZ	182	module_init(h8300_ide_init);
f95dc320 AB	183
f95dc320 AB	184	MODULE_LICENSE("GPL");