[linux-2.6-block.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_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 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,

	.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
	25	static void mm_outw(u16 d, unsigned long a)
	26	{
	27	__asm__("mov.b %w0,r2h\n\t"
	28	"mov.b %x0,r2l\n\t"
	29	"mov.w r2,@%1"
	30	:
	31	:"r"(d),"r"(a)
	32	:"er2");
	33	}
	34
	35	static u16 mm_inw(unsigned long a)
	36	{
	37	register u16 r __asm__("er0");
	38	__asm__("mov.w @%1,r2\n\t"
	39	"mov.b r2l,%x0\n\t"
	40	"mov.b r2h,%w0"
	41	:"=r"(r)
	42	:"r"(a)
	43	:"er2");
	44	return r;
	45	}
	46
22aa4b32	47	static void h8300_tf_load(ide_drive_t drive, struct ide_cmd cmd)
92fcaaa8 BZ	48	{
	49	ide_hwif_t *hwif = drive->hwif;
	50	struct ide_io_ports *io_ports = &hwif->io_ports;
22aa4b32 BZ	51	struct ide_taskfile *tf = &cmd->tf;
22aa4b32 BZ	52	u8 HIHI = (cmd->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF;
92fcaaa8	53
22aa4b32	54	if (cmd->ftf_flags & IDE_FTFLAG_FLAGGED)
92fcaaa8 BZ	55	HIHI = 0xFF;
92fcaaa8 BZ	56
22aa4b32	57	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
92fcaaa8	58	outb(tf->hob_feature, io_ports->feature_addr);
22aa4b32	59	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
92fcaaa8	60	outb(tf->hob_nsect, io_ports->nsect_addr);
22aa4b32	61	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
92fcaaa8	62	outb(tf->hob_lbal, io_ports->lbal_addr);
22aa4b32	63	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
92fcaaa8	64	outb(tf->hob_lbam, io_ports->lbam_addr);
22aa4b32	65	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
92fcaaa8 BZ	66	outb(tf->hob_lbah, io_ports->lbah_addr);
92fcaaa8 BZ	67
22aa4b32	68	if (cmd->tf_flags & IDE_TFLAG_OUT_FEATURE)
92fcaaa8	69	outb(tf->feature, io_ports->feature_addr);
22aa4b32	70	if (cmd->tf_flags & IDE_TFLAG_OUT_NSECT)
92fcaaa8	71	outb(tf->nsect, io_ports->nsect_addr);
22aa4b32	72	if (cmd->tf_flags & IDE_TFLAG_OUT_LBAL)
92fcaaa8	73	outb(tf->lbal, io_ports->lbal_addr);
22aa4b32	74	if (cmd->tf_flags & IDE_TFLAG_OUT_LBAM)
92fcaaa8	75	outb(tf->lbam, io_ports->lbam_addr);
22aa4b32	76	if (cmd->tf_flags & IDE_TFLAG_OUT_LBAH)
92fcaaa8 BZ	77	outb(tf->lbah, io_ports->lbah_addr);
92fcaaa8 BZ	78
22aa4b32	79	if (cmd->tf_flags & IDE_TFLAG_OUT_DEVICE)
7f612f27	80	outb((tf->device & HIHI) \| drive->select,
92fcaaa8 BZ	81	io_ports->device_addr);
	82	}
	83
22aa4b32	84	static void h8300_tf_read(ide_drive_t drive, struct ide_cmd cmd)
92fcaaa8 BZ	85	{
	86	ide_hwif_t *hwif = drive->hwif;
	87	struct ide_io_ports *io_ports = &hwif->io_ports;
22aa4b32	88	struct ide_taskfile *tf = &cmd->tf;
92fcaaa8	89
92fcaaa8	90	/* be sure we're looking at the low order bits */
4d74c3fc	91	outb(ATA_DEVCTL_OBS, io_ports->ctl_addr);
92fcaaa8	92
67625119 SS	93	if (cmd->tf_flags & IDE_TFLAG_IN_ERROR)
67625119 SS	94	tf->error = inb(io_ports->feature_addr);
22aa4b32	95	if (cmd->tf_flags & IDE_TFLAG_IN_NSECT)
92fcaaa8	96	tf->nsect = inb(io_ports->nsect_addr);
22aa4b32	97	if (cmd->tf_flags & IDE_TFLAG_IN_LBAL)
92fcaaa8	98	tf->lbal = inb(io_ports->lbal_addr);
22aa4b32	99	if (cmd->tf_flags & IDE_TFLAG_IN_LBAM)
92fcaaa8	100	tf->lbam = inb(io_ports->lbam_addr);
22aa4b32	101	if (cmd->tf_flags & IDE_TFLAG_IN_LBAH)
92fcaaa8	102	tf->lbah = inb(io_ports->lbah_addr);
22aa4b32	103	if (cmd->tf_flags & IDE_TFLAG_IN_DEVICE)
92fcaaa8 BZ	104	tf->device = inb(io_ports->device_addr);
92fcaaa8 BZ	105
22aa4b32	106	if (cmd->tf_flags & IDE_TFLAG_LBA48) {
4d74c3fc	107	outb(ATA_HOB \| ATA_DEVCTL_OBS, io_ports->ctl_addr);
92fcaaa8	108
67625119 SS	109	if (cmd->tf_flags & IDE_TFLAG_IN_HOB_ERROR)
67625119 SS	110	tf->hob_error = inb(io_ports->feature_addr);
22aa4b32	111	if (cmd->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
67625119	112	tf->hob_nsect = inb(io_ports->nsect_addr);
22aa4b32	113	if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
67625119	114	tf->hob_lbal = inb(io_ports->lbal_addr);
22aa4b32	115	if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
67625119	116	tf->hob_lbam = inb(io_ports->lbam_addr);
22aa4b32	117	if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
67625119	118	tf->hob_lbah = inb(io_ports->lbah_addr);
92fcaaa8 BZ	119	}
	120	}
	121
1da177e4 LT	122	static void mm_outsw(unsigned long addr, void *buf, u32 len)
	123	{
	124	unsigned short bp = (unsigned short )buf;
	125	for (; len > 0; len--, bp++)
	126	(volatile u16 )addr = bswap(*bp);
	127	}
	128
	129	static void mm_insw(unsigned long addr, void *buf, u32 len)
	130	{
	131	unsigned short bp = (unsigned short )buf;
	132	for (; len > 0; len--, bp++)
	133	bp = bswap((volatile u16 *)addr);
	134	}
	135
adb1af98	136	static void h8300_input_data(ide_drive_t drive, struct ide_cmd cmd,
f04ff9cb BZ	137	void *buf, unsigned int len)
	138	{
	139	mm_insw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2);
	140	}
	141
adb1af98	142	static void h8300_output_data(ide_drive_t drive, struct ide_cmd cmd,
f04ff9cb BZ	143	void *buf, unsigned int len)
	144	{
	145	mm_outsw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2);
	146	}
	147
374e042c BZ	148	static const struct ide_tp_ops h8300_tp_ops = {
	149	.exec_command = ide_exec_command,
	150	.read_status = ide_read_status,
	151	.read_altstatus = ide_read_altstatus,
ecf3a31d	152	.write_devctl = ide_write_devctl,
374e042c BZ	153
	154	.tf_load = h8300_tf_load,
	155	.tf_read = h8300_tf_read,
	156
	157	.input_data = h8300_input_data,
	158	.output_data = h8300_output_data,
	159	};
	160
1da177e4 LT	161	#define H8300_IDE_GAP (2)
	162
	163	static inline void hw_setup(hw_regs_t *hw)
	164	{
	165	int i;
	166
	167	memset(hw, 0, sizeof(hw_regs_t));
4c3032d8 BZ	168	for (i = 0; i <= 7; i++)
	169	hw->io_ports_array[i] = CONFIG_H8300_IDE_BASE + H8300_IDE_GAP*i;
	170	hw->io_ports.ctl_addr = CONFIG_H8300_IDE_ALT;
1da177e4	171	hw->irq = EXT_IRQ0 + CONFIG_H8300_IDE_IRQ;
1da177e4 LT	172	hw->chipset = ide_generic;
	173	}
	174
f81eb80b	175	static const struct ide_port_info h8300_port_info = {
374e042c	176	.tp_ops = &h8300_tp_ops,
f81eb80b BZ	177	.host_flags = IDE_HFLAG_NO_IO_32BIT \| IDE_HFLAG_NO_DMA,
	178	};
	179
ade2daf9	180	static int __init h8300_ide_init(void)
1da177e4	181	{
c97c6aca	182	hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
1da177e4	183
740c397c BZ	184	printk(KERN_INFO DRV_NAME ": H8/300 generic IDE interface\n");
740c397c BZ	185
1da177e4 LT	186	if (!request_region(CONFIG_H8300_IDE_BASE, H8300_IDE_GAP*8, "ide-h8300"))
	187	goto out_busy;
	188	if (!request_region(CONFIG_H8300_IDE_ALT, H8300_IDE_GAP, "ide-h8300")) {
	189	release_region(CONFIG_H8300_IDE_BASE, H8300_IDE_GAP*8);
	190	goto out_busy;
	191	}
	192
	193	hw_setup(&hw);
	194
6f904d01	195	return ide_host_add(&h8300_port_info, hws, NULL);
1da177e4 LT	196
	197	out_busy:
	198	printk(KERN_ERR "ide-h8300: IDE I/F resource already used.\n");
ade2daf9 BZ	199
ade2daf9 BZ	200	return -EBUSY;
1da177e4	201	}
ade2daf9 BZ	202
ade2daf9 BZ	203	module_init(h8300_ide_init);
f95dc320 AB	204
f95dc320 AB	205	MODULE_LICENSE("GPL");