[mirror_ubuntu-bionic-kernel.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->ftf_flags & IDE_FTFLAG_OUT_DATA)
		mm_outw((tf->hob_data << 8) | tf->data, io_ports->data_addr);

	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;

	if (cmd->ftf_flags & IDE_FTFLAG_IN_DATA) {
		u16 data = mm_inw(io_ports->data_addr);

		tf->data = data & 0xff;
		tf->hob_data = (data >> 8) & 0xff;
	}

	/* 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_FEATURE)
		tf->feature = 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_FEATURE)
			tf->hob_feature = 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,

	.set_irq		= ide_set_irq,

	.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->ftf_flags & IDE_FTFLAG_OUT_DATA)
92fcaaa8 BZ	58	mm_outw((tf->hob_data << 8) \| tf->data, io_ports->data_addr);
92fcaaa8 BZ	59
22aa4b32	60	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
92fcaaa8	61	outb(tf->hob_feature, io_ports->feature_addr);
22aa4b32	62	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
92fcaaa8	63	outb(tf->hob_nsect, io_ports->nsect_addr);
22aa4b32	64	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
92fcaaa8	65	outb(tf->hob_lbal, io_ports->lbal_addr);
22aa4b32	66	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
92fcaaa8	67	outb(tf->hob_lbam, io_ports->lbam_addr);
22aa4b32	68	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
92fcaaa8 BZ	69	outb(tf->hob_lbah, io_ports->lbah_addr);
92fcaaa8 BZ	70
22aa4b32	71	if (cmd->tf_flags & IDE_TFLAG_OUT_FEATURE)
92fcaaa8	72	outb(tf->feature, io_ports->feature_addr);
22aa4b32	73	if (cmd->tf_flags & IDE_TFLAG_OUT_NSECT)
92fcaaa8	74	outb(tf->nsect, io_ports->nsect_addr);
22aa4b32	75	if (cmd->tf_flags & IDE_TFLAG_OUT_LBAL)
92fcaaa8	76	outb(tf->lbal, io_ports->lbal_addr);
22aa4b32	77	if (cmd->tf_flags & IDE_TFLAG_OUT_LBAM)
92fcaaa8	78	outb(tf->lbam, io_ports->lbam_addr);
22aa4b32	79	if (cmd->tf_flags & IDE_TFLAG_OUT_LBAH)
92fcaaa8 BZ	80	outb(tf->lbah, io_ports->lbah_addr);
92fcaaa8 BZ	81
22aa4b32	82	if (cmd->tf_flags & IDE_TFLAG_OUT_DEVICE)
7f612f27	83	outb((tf->device & HIHI) \| drive->select,
92fcaaa8 BZ	84	io_ports->device_addr);
	85	}
	86
22aa4b32	87	static void h8300_tf_read(ide_drive_t drive, struct ide_cmd cmd)
92fcaaa8 BZ	88	{
	89	ide_hwif_t *hwif = drive->hwif;
	90	struct ide_io_ports *io_ports = &hwif->io_ports;
22aa4b32	91	struct ide_taskfile *tf = &cmd->tf;
92fcaaa8	92
22aa4b32	93	if (cmd->ftf_flags & IDE_FTFLAG_IN_DATA) {
92fcaaa8 BZ	94	u16 data = mm_inw(io_ports->data_addr);
	95
	96	tf->data = data & 0xff;
	97	tf->hob_data = (data >> 8) & 0xff;
	98	}
	99
	100	/* be sure we're looking at the low order bits */
4d74c3fc	101	outb(ATA_DEVCTL_OBS, io_ports->ctl_addr);
92fcaaa8	102
22aa4b32	103	if (cmd->tf_flags & IDE_TFLAG_IN_FEATURE)
92eb4380	104	tf->feature = inb(io_ports->feature_addr);
22aa4b32	105	if (cmd->tf_flags & IDE_TFLAG_IN_NSECT)
92fcaaa8	106	tf->nsect = inb(io_ports->nsect_addr);
22aa4b32	107	if (cmd->tf_flags & IDE_TFLAG_IN_LBAL)
92fcaaa8	108	tf->lbal = inb(io_ports->lbal_addr);
22aa4b32	109	if (cmd->tf_flags & IDE_TFLAG_IN_LBAM)
92fcaaa8	110	tf->lbam = inb(io_ports->lbam_addr);
22aa4b32	111	if (cmd->tf_flags & IDE_TFLAG_IN_LBAH)
92fcaaa8	112	tf->lbah = inb(io_ports->lbah_addr);
22aa4b32	113	if (cmd->tf_flags & IDE_TFLAG_IN_DEVICE)
92fcaaa8 BZ	114	tf->device = inb(io_ports->device_addr);
92fcaaa8 BZ	115
22aa4b32	116	if (cmd->tf_flags & IDE_TFLAG_LBA48) {
4d74c3fc	117	outb(ATA_HOB \| ATA_DEVCTL_OBS, io_ports->ctl_addr);
92fcaaa8	118
22aa4b32	119	if (cmd->tf_flags & IDE_TFLAG_IN_HOB_FEATURE)
92fcaaa8	120	tf->hob_feature = inb(io_ports->feature_addr);
22aa4b32	121	if (cmd->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
92fcaaa8	122	tf->hob_nsect = inb(io_ports->nsect_addr);
22aa4b32	123	if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
92fcaaa8	124	tf->hob_lbal = inb(io_ports->lbal_addr);
22aa4b32	125	if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
92fcaaa8	126	tf->hob_lbam = inb(io_ports->lbam_addr);
22aa4b32	127	if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
92fcaaa8 BZ	128	tf->hob_lbah = inb(io_ports->lbah_addr);
	129	}
	130	}
	131
1da177e4 LT	132	static void mm_outsw(unsigned long addr, void *buf, u32 len)
	133	{
	134	unsigned short bp = (unsigned short )buf;
	135	for (; len > 0; len--, bp++)
	136	(volatile u16 )addr = bswap(*bp);
	137	}
	138
	139	static void mm_insw(unsigned long addr, void *buf, u32 len)
	140	{
	141	unsigned short bp = (unsigned short )buf;
	142	for (; len > 0; len--, bp++)
	143	bp = bswap((volatile u16 *)addr);
	144	}
	145
adb1af98	146	static void h8300_input_data(ide_drive_t drive, struct ide_cmd cmd,
f04ff9cb BZ	147	void *buf, unsigned int len)
	148	{
	149	mm_insw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2);
	150	}
	151
adb1af98	152	static void h8300_output_data(ide_drive_t drive, struct ide_cmd cmd,
f04ff9cb BZ	153	void *buf, unsigned int len)
	154	{
	155	mm_outsw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2);
	156	}
	157
374e042c BZ	158	static const struct ide_tp_ops h8300_tp_ops = {
	159	.exec_command = ide_exec_command,
	160	.read_status = ide_read_status,
	161	.read_altstatus = ide_read_altstatus,
374e042c BZ	162
	163	.set_irq = ide_set_irq,
	164
	165	.tf_load = h8300_tf_load,
	166	.tf_read = h8300_tf_read,
	167
	168	.input_data = h8300_input_data,
	169	.output_data = h8300_output_data,
	170	};
	171
1da177e4 LT	172	#define H8300_IDE_GAP (2)
	173
	174	static inline void hw_setup(hw_regs_t *hw)
	175	{
	176	int i;
	177
	178	memset(hw, 0, sizeof(hw_regs_t));
4c3032d8 BZ	179	for (i = 0; i <= 7; i++)
	180	hw->io_ports_array[i] = CONFIG_H8300_IDE_BASE + H8300_IDE_GAP*i;
	181	hw->io_ports.ctl_addr = CONFIG_H8300_IDE_ALT;
1da177e4	182	hw->irq = EXT_IRQ0 + CONFIG_H8300_IDE_IRQ;
1da177e4 LT	183	hw->chipset = ide_generic;
	184	}
	185
f81eb80b	186	static const struct ide_port_info h8300_port_info = {
374e042c	187	.tp_ops = &h8300_tp_ops,
f81eb80b BZ	188	.host_flags = IDE_HFLAG_NO_IO_32BIT \| IDE_HFLAG_NO_DMA,
	189	};
	190
ade2daf9	191	static int __init h8300_ide_init(void)
1da177e4	192	{
c97c6aca	193	hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
1da177e4	194
740c397c BZ	195	printk(KERN_INFO DRV_NAME ": H8/300 generic IDE interface\n");
740c397c BZ	196
1da177e4 LT	197	if (!request_region(CONFIG_H8300_IDE_BASE, H8300_IDE_GAP*8, "ide-h8300"))
	198	goto out_busy;
	199	if (!request_region(CONFIG_H8300_IDE_ALT, H8300_IDE_GAP, "ide-h8300")) {
	200	release_region(CONFIG_H8300_IDE_BASE, H8300_IDE_GAP*8);
	201	goto out_busy;
	202	}
	203
	204	hw_setup(&hw);
	205
6f904d01	206	return ide_host_add(&h8300_port_info, hws, NULL);
1da177e4 LT	207
	208	out_busy:
	209	printk(KERN_ERR "ide-h8300: IDE I/F resource already used.\n");
ade2daf9 BZ	210
ade2daf9 BZ	211	return -EBUSY;
1da177e4	212	}
ade2daf9 BZ	213
ade2daf9 BZ	214	module_init(h8300_ide_init);
f95dc320 AB	215
f95dc320 AB	216	MODULE_LICENSE("GPL");