[deliverable/linux.git] / drivers / ide / ide-io-std.c


#include <linux/kernel.h>
#include <linux/ide.h>

#if defined(CONFIG_ARM) || defined(CONFIG_M68K) || defined(CONFIG_MIPS) || \
    defined(CONFIG_PARISC) || defined(CONFIG_PPC) || defined(CONFIG_SPARC)
#include <asm/ide.h>
#else
#include <asm-generic/ide_iops.h>
#endif

/*
 *	Conventional PIO operations for ATA devices
 */

static u8 ide_inb(unsigned long port)
{
	return (u8) inb(port);
}

static void ide_outb(u8 val, unsigned long port)
{
	outb(val, port);
}

/*
 *	MMIO operations, typically used for SATA controllers
 */

static u8 ide_mm_inb(unsigned long port)
{
	return (u8) readb((void __iomem *) port);
}

static void ide_mm_outb(u8 value, unsigned long port)
{
	writeb(value, (void __iomem *) port);
}

void ide_exec_command(ide_hwif_t *hwif, u8 cmd)
{
	if (hwif->host_flags & IDE_HFLAG_MMIO)
		writeb(cmd, (void __iomem *)hwif->io_ports.command_addr);
	else
		outb(cmd, hwif->io_ports.command_addr);
}
EXPORT_SYMBOL_GPL(ide_exec_command);

u8 ide_read_status(ide_hwif_t *hwif)
{
	if (hwif->host_flags & IDE_HFLAG_MMIO)
		return readb((void __iomem *)hwif->io_ports.status_addr);
	else
		return inb(hwif->io_ports.status_addr);
}
EXPORT_SYMBOL_GPL(ide_read_status);

u8 ide_read_altstatus(ide_hwif_t *hwif)
{
	if (hwif->host_flags & IDE_HFLAG_MMIO)
		return readb((void __iomem *)hwif->io_ports.ctl_addr);
	else
		return inb(hwif->io_ports.ctl_addr);
}
EXPORT_SYMBOL_GPL(ide_read_altstatus);

void ide_write_devctl(ide_hwif_t *hwif, u8 ctl)
{
	if (hwif->host_flags & IDE_HFLAG_MMIO)
		writeb(ctl, (void __iomem *)hwif->io_ports.ctl_addr);
	else
		outb(ctl, hwif->io_ports.ctl_addr);
}
EXPORT_SYMBOL_GPL(ide_write_devctl);

void ide_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;
	void (*tf_outb)(u8 addr, unsigned long port);
	u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
	u8 HIHI = (cmd->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF;

	if (mmio)
		tf_outb = ide_mm_outb;
	else
		tf_outb = ide_outb;

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

	if (cmd->ftf_flags & IDE_FTFLAG_OUT_DATA) {
		u16 data = (tf->hob_data << 8) | tf->data;

		if (mmio)
			writew(data, (void __iomem *)io_ports->data_addr);
		else
			outw(data, io_ports->data_addr);
	}

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

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

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

void ide_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;
	void (*tf_outb)(u8 addr, unsigned long port);
	u8 (*tf_inb)(unsigned long port);
	u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;

	if (mmio) {
		tf_outb = ide_mm_outb;
		tf_inb  = ide_mm_inb;
	} else {
		tf_outb = ide_outb;
		tf_inb  = ide_inb;
	}

	if (cmd->ftf_flags & IDE_FTFLAG_IN_DATA) {
		u16 data;

		if (mmio)
			data = readw((void __iomem *)io_ports->data_addr);
		else
			data = 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 */
	tf_outb(ATA_DEVCTL_OBS, io_ports->ctl_addr);

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

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

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

/*
 * Some localbus EIDE interfaces require a special access sequence
 * when using 32-bit I/O instructions to transfer data.  We call this
 * the "vlb_sync" sequence, which consists of three successive reads
 * of the sector count register location, with interrupts disabled
 * to ensure that the reads all happen together.
 */
static void ata_vlb_sync(unsigned long port)
{
	(void)inb(port);
	(void)inb(port);
	(void)inb(port);
}

/*
 * This is used for most PIO data transfers *from* the IDE interface
 *
 * These routines will round up any request for an odd number of bytes,
 * so if an odd len is specified, be sure that there's at least one
 * extra byte allocated for the buffer.
 */
void ide_input_data(ide_drive_t *drive, struct ide_cmd *cmd, void *buf,
		    unsigned int len)
{
	ide_hwif_t *hwif = drive->hwif;
	struct ide_io_ports *io_ports = &hwif->io_ports;
	unsigned long data_addr = io_ports->data_addr;
	u8 io_32bit = drive->io_32bit;
	u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;

	len++;

	if (io_32bit) {
		unsigned long uninitialized_var(flags);

		if ((io_32bit & 2) && !mmio) {
			local_irq_save(flags);
			ata_vlb_sync(io_ports->nsect_addr);
		}

		if (mmio)
			__ide_mm_insl((void __iomem *)data_addr, buf, len / 4);
		else
			insl(data_addr, buf, len / 4);

		if ((io_32bit & 2) && !mmio)
			local_irq_restore(flags);

		if ((len & 3) >= 2) {
			if (mmio)
				__ide_mm_insw((void __iomem *)data_addr,
						(u8 *)buf + (len & ~3), 1);
			else
				insw(data_addr, (u8 *)buf + (len & ~3), 1);
		}
	} else {
		if (mmio)
			__ide_mm_insw((void __iomem *)data_addr, buf, len / 2);
		else
			insw(data_addr, buf, len / 2);
	}
}
EXPORT_SYMBOL_GPL(ide_input_data);

/*
 * This is used for most PIO data transfers *to* the IDE interface
 */
void ide_output_data(ide_drive_t *drive, struct ide_cmd *cmd, void *buf,
		     unsigned int len)
{
	ide_hwif_t *hwif = drive->hwif;
	struct ide_io_ports *io_ports = &hwif->io_ports;
	unsigned long data_addr = io_ports->data_addr;
	u8 io_32bit = drive->io_32bit;
	u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;

	len++;

	if (io_32bit) {
		unsigned long uninitialized_var(flags);

		if ((io_32bit & 2) && !mmio) {
			local_irq_save(flags);
			ata_vlb_sync(io_ports->nsect_addr);
		}

		if (mmio)
			__ide_mm_outsl((void __iomem *)data_addr, buf, len / 4);
		else
			outsl(data_addr, buf, len / 4);

		if ((io_32bit & 2) && !mmio)
			local_irq_restore(flags);

		if ((len & 3) >= 2) {
			if (mmio)
				__ide_mm_outsw((void __iomem *)data_addr,
						 (u8 *)buf + (len & ~3), 1);
			else
				outsw(data_addr, (u8 *)buf + (len & ~3), 1);
		}
	} else {
		if (mmio)
			__ide_mm_outsw((void __iomem *)data_addr, buf, len / 2);
		else
			outsw(data_addr, buf, len / 2);
	}
}
EXPORT_SYMBOL_GPL(ide_output_data);

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

	.tf_load		= ide_tf_load,
	.tf_read		= ide_tf_read,

	.input_data		= ide_input_data,
	.output_data		= ide_output_data,
};
Commit	Line	Data
1574cf6c BZ	1
	2	#include <linux/kernel.h>
	3	#include <linux/ide.h>
	4
15a453a9 BZ	5	#if defined(CONFIG_ARM) \|\| defined(CONFIG_M68K) \|\| defined(CONFIG_MIPS) \|\| \
	6	defined(CONFIG_PARISC) \|\| defined(CONFIG_PPC) \|\| defined(CONFIG_SPARC)
	7	#include <asm/ide.h>
	8	#else
	9	#include <asm-generic/ide_iops.h>
	10	#endif
	11
1574cf6c BZ	12	/*
	13	* Conventional PIO operations for ATA devices
	14	*/
	15
	16	static u8 ide_inb(unsigned long port)
	17	{
	18	return (u8) inb(port);
	19	}
	20
	21	static void ide_outb(u8 val, unsigned long port)
	22	{
	23	outb(val, port);
	24	}
	25
	26	/*
	27	* MMIO operations, typically used for SATA controllers
	28	*/
	29
	30	static u8 ide_mm_inb(unsigned long port)
	31	{
	32	return (u8) readb((void __iomem *) port);
	33	}
	34
	35	static void ide_mm_outb(u8 value, unsigned long port)
	36	{
	37	writeb(value, (void __iomem *) port);
	38	}
	39
	40	void ide_exec_command(ide_hwif_t *hwif, u8 cmd)
	41	{
	42	if (hwif->host_flags & IDE_HFLAG_MMIO)
	43	writeb(cmd, (void __iomem *)hwif->io_ports.command_addr);
	44	else
	45	outb(cmd, hwif->io_ports.command_addr);
	46	}
	47	EXPORT_SYMBOL_GPL(ide_exec_command);
	48
	49	u8 ide_read_status(ide_hwif_t *hwif)
	50	{
	51	if (hwif->host_flags & IDE_HFLAG_MMIO)
	52	return readb((void __iomem *)hwif->io_ports.status_addr);
	53	else
	54	return inb(hwif->io_ports.status_addr);
	55	}
	56	EXPORT_SYMBOL_GPL(ide_read_status);
	57
	58	u8 ide_read_altstatus(ide_hwif_t *hwif)
	59	{
	60	if (hwif->host_flags & IDE_HFLAG_MMIO)
	61	return readb((void __iomem *)hwif->io_ports.ctl_addr);
	62	else
	63	return inb(hwif->io_ports.ctl_addr);
	64	}
	65	EXPORT_SYMBOL_GPL(ide_read_altstatus);
	66
ecf3a31d	67	void ide_write_devctl(ide_hwif_t *hwif, u8 ctl)
1574cf6c	68	{
1574cf6c BZ	69	if (hwif->host_flags & IDE_HFLAG_MMIO)
	70	writeb(ctl, (void __iomem *)hwif->io_ports.ctl_addr);
	71	else
	72	outb(ctl, hwif->io_ports.ctl_addr);
	73	}
ecf3a31d	74	EXPORT_SYMBOL_GPL(ide_write_devctl);
1574cf6c	75
22aa4b32	76	void ide_tf_load(ide_drive_t drive, struct ide_cmd cmd)
1574cf6c BZ	77	{
	78	ide_hwif_t *hwif = drive->hwif;
	79	struct ide_io_ports *io_ports = &hwif->io_ports;
22aa4b32	80	struct ide_taskfile *tf = &cmd->tf;
1574cf6c BZ	81	void (*tf_outb)(u8 addr, unsigned long port);
1574cf6c BZ	82	u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
22aa4b32	83	u8 HIHI = (cmd->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF;
1574cf6c BZ	84
	85	if (mmio)
	86	tf_outb = ide_mm_outb;
	87	else
	88	tf_outb = ide_outb;
	89
22aa4b32	90	if (cmd->ftf_flags & IDE_FTFLAG_FLAGGED)
1574cf6c BZ	91	HIHI = 0xFF;
1574cf6c BZ	92
22aa4b32	93	if (cmd->ftf_flags & IDE_FTFLAG_OUT_DATA) {
1574cf6c BZ	94	u16 data = (tf->hob_data << 8) \| tf->data;
	95
	96	if (mmio)
	97	writew(data, (void __iomem *)io_ports->data_addr);
	98	else
	99	outw(data, io_ports->data_addr);
	100	}
	101
22aa4b32	102	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
1574cf6c	103	tf_outb(tf->hob_feature, io_ports->feature_addr);
22aa4b32	104	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
1574cf6c	105	tf_outb(tf->hob_nsect, io_ports->nsect_addr);
22aa4b32	106	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
1574cf6c	107	tf_outb(tf->hob_lbal, io_ports->lbal_addr);
22aa4b32	108	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
1574cf6c	109	tf_outb(tf->hob_lbam, io_ports->lbam_addr);
22aa4b32	110	if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
1574cf6c BZ	111	tf_outb(tf->hob_lbah, io_ports->lbah_addr);
1574cf6c BZ	112
22aa4b32	113	if (cmd->tf_flags & IDE_TFLAG_OUT_FEATURE)
1574cf6c	114	tf_outb(tf->feature, io_ports->feature_addr);
22aa4b32	115	if (cmd->tf_flags & IDE_TFLAG_OUT_NSECT)
1574cf6c	116	tf_outb(tf->nsect, io_ports->nsect_addr);
22aa4b32	117	if (cmd->tf_flags & IDE_TFLAG_OUT_LBAL)
1574cf6c	118	tf_outb(tf->lbal, io_ports->lbal_addr);
22aa4b32	119	if (cmd->tf_flags & IDE_TFLAG_OUT_LBAM)
1574cf6c	120	tf_outb(tf->lbam, io_ports->lbam_addr);
22aa4b32	121	if (cmd->tf_flags & IDE_TFLAG_OUT_LBAH)
1574cf6c BZ	122	tf_outb(tf->lbah, io_ports->lbah_addr);
1574cf6c BZ	123
22aa4b32	124	if (cmd->tf_flags & IDE_TFLAG_OUT_DEVICE)
1574cf6c BZ	125	tf_outb((tf->device & HIHI) \| drive->select,
	126	io_ports->device_addr);
	127	}
	128	EXPORT_SYMBOL_GPL(ide_tf_load);
	129
22aa4b32	130	void ide_tf_read(ide_drive_t drive, struct ide_cmd cmd)
1574cf6c BZ	131	{
	132	ide_hwif_t *hwif = drive->hwif;
	133	struct ide_io_ports *io_ports = &hwif->io_ports;
22aa4b32	134	struct ide_taskfile *tf = &cmd->tf;
1574cf6c BZ	135	void (*tf_outb)(u8 addr, unsigned long port);
	136	u8 (*tf_inb)(unsigned long port);
	137	u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
	138
	139	if (mmio) {
	140	tf_outb = ide_mm_outb;
	141	tf_inb = ide_mm_inb;
	142	} else {
	143	tf_outb = ide_outb;
	144	tf_inb = ide_inb;
	145	}
	146
22aa4b32	147	if (cmd->ftf_flags & IDE_FTFLAG_IN_DATA) {
1574cf6c BZ	148	u16 data;
	149
	150	if (mmio)
	151	data = readw((void __iomem *)io_ports->data_addr);
	152	else
	153	data = inw(io_ports->data_addr);
	154
	155	tf->data = data & 0xff;
	156	tf->hob_data = (data >> 8) & 0xff;
	157	}
	158
	159	/* be sure we're looking at the low order bits */
4d74c3fc	160	tf_outb(ATA_DEVCTL_OBS, io_ports->ctl_addr);
1574cf6c	161
67625119 SS	162	if (cmd->tf_flags & IDE_TFLAG_IN_ERROR)
67625119 SS	163	tf->error = tf_inb(io_ports->feature_addr);
22aa4b32	164	if (cmd->tf_flags & IDE_TFLAG_IN_NSECT)
1574cf6c	165	tf->nsect = tf_inb(io_ports->nsect_addr);
22aa4b32	166	if (cmd->tf_flags & IDE_TFLAG_IN_LBAL)
1574cf6c	167	tf->lbal = tf_inb(io_ports->lbal_addr);
22aa4b32	168	if (cmd->tf_flags & IDE_TFLAG_IN_LBAM)
1574cf6c	169	tf->lbam = tf_inb(io_ports->lbam_addr);
22aa4b32	170	if (cmd->tf_flags & IDE_TFLAG_IN_LBAH)
1574cf6c	171	tf->lbah = tf_inb(io_ports->lbah_addr);
22aa4b32	172	if (cmd->tf_flags & IDE_TFLAG_IN_DEVICE)
1574cf6c BZ	173	tf->device = tf_inb(io_ports->device_addr);
1574cf6c BZ	174
22aa4b32	175	if (cmd->tf_flags & IDE_TFLAG_LBA48) {
4d74c3fc	176	tf_outb(ATA_HOB \| ATA_DEVCTL_OBS, io_ports->ctl_addr);
1574cf6c	177
67625119 SS	178	if (cmd->tf_flags & IDE_TFLAG_IN_HOB_ERROR)
67625119 SS	179	tf->hob_error = tf_inb(io_ports->feature_addr);
22aa4b32	180	if (cmd->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
67625119	181	tf->hob_nsect = tf_inb(io_ports->nsect_addr);
22aa4b32	182	if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
67625119	183	tf->hob_lbal = tf_inb(io_ports->lbal_addr);
22aa4b32	184	if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
67625119	185	tf->hob_lbam = tf_inb(io_ports->lbam_addr);
22aa4b32	186	if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
67625119	187	tf->hob_lbah = tf_inb(io_ports->lbah_addr);
1574cf6c BZ	188	}
	189	}
	190	EXPORT_SYMBOL_GPL(ide_tf_read);
	191
	192	/*
	193	* Some localbus EIDE interfaces require a special access sequence
	194	* when using 32-bit I/O instructions to transfer data. We call this
	195	* the "vlb_sync" sequence, which consists of three successive reads
	196	* of the sector count register location, with interrupts disabled
	197	* to ensure that the reads all happen together.
	198	*/
	199	static void ata_vlb_sync(unsigned long port)
	200	{
	201	(void)inb(port);
	202	(void)inb(port);
	203	(void)inb(port);
	204	}
	205
	206	/*
	207	* This is used for most PIO data transfers from the IDE interface
	208	*
	209	* These routines will round up any request for an odd number of bytes,
	210	* so if an odd len is specified, be sure that there's at least one
	211	* extra byte allocated for the buffer.
	212	*/
adb1af98	213	void ide_input_data(ide_drive_t drive, struct ide_cmd cmd, void *buf,
1574cf6c BZ	214	unsigned int len)
	215	{
	216	ide_hwif_t *hwif = drive->hwif;
	217	struct ide_io_ports *io_ports = &hwif->io_ports;
	218	unsigned long data_addr = io_ports->data_addr;
	219	u8 io_32bit = drive->io_32bit;
	220	u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
	221
	222	len++;
	223
	224	if (io_32bit) {
	225	unsigned long uninitialized_var(flags);
	226
	227	if ((io_32bit & 2) && !mmio) {
	228	local_irq_save(flags);
	229	ata_vlb_sync(io_ports->nsect_addr);
	230	}
	231
	232	if (mmio)
	233	__ide_mm_insl((void __iomem *)data_addr, buf, len / 4);
	234	else
	235	insl(data_addr, buf, len / 4);
	236
	237	if ((io_32bit & 2) && !mmio)
	238	local_irq_restore(flags);
	239
	240	if ((len & 3) >= 2) {
	241	if (mmio)
	242	__ide_mm_insw((void __iomem *)data_addr,
	243	(u8 *)buf + (len & ~3), 1);
	244	else
	245	insw(data_addr, (u8 *)buf + (len & ~3), 1);
	246	}
	247	} else {
	248	if (mmio)
	249	__ide_mm_insw((void __iomem *)data_addr, buf, len / 2);
	250	else
	251	insw(data_addr, buf, len / 2);
	252	}
	253	}
	254	EXPORT_SYMBOL_GPL(ide_input_data);
	255
	256	/*
	257	* This is used for most PIO data transfers to the IDE interface
	258	*/
adb1af98	259	void ide_output_data(ide_drive_t drive, struct ide_cmd cmd, void *buf,
1574cf6c BZ	260	unsigned int len)
	261	{
	262	ide_hwif_t *hwif = drive->hwif;
	263	struct ide_io_ports *io_ports = &hwif->io_ports;
	264	unsigned long data_addr = io_ports->data_addr;
	265	u8 io_32bit = drive->io_32bit;
	266	u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
	267
	268	len++;
	269
	270	if (io_32bit) {
	271	unsigned long uninitialized_var(flags);
	272
	273	if ((io_32bit & 2) && !mmio) {
	274	local_irq_save(flags);
	275	ata_vlb_sync(io_ports->nsect_addr);
	276	}
	277
	278	if (mmio)
	279	__ide_mm_outsl((void __iomem *)data_addr, buf, len / 4);
	280	else
	281	outsl(data_addr, buf, len / 4);
	282
	283	if ((io_32bit & 2) && !mmio)
	284	local_irq_restore(flags);
	285
	286	if ((len & 3) >= 2) {
	287	if (mmio)
	288	__ide_mm_outsw((void __iomem *)data_addr,
	289	(u8 *)buf + (len & ~3), 1);
	290	else
	291	outsw(data_addr, (u8 *)buf + (len & ~3), 1);
	292	}
	293	} else {
	294	if (mmio)
	295	__ide_mm_outsw((void __iomem *)data_addr, buf, len / 2);
	296	else
	297	outsw(data_addr, buf, len / 2);
	298	}
	299	}
	300	EXPORT_SYMBOL_GPL(ide_output_data);
	301
	302	const struct ide_tp_ops default_tp_ops = {
	303	.exec_command = ide_exec_command,
	304	.read_status = ide_read_status,
	305	.read_altstatus = ide_read_altstatus,
ecf3a31d	306	.write_devctl = ide_write_devctl,
1574cf6c BZ	307
	308	.tf_load = ide_tf_load,
	309	.tf_read = ide_tf_read,
	310
	311	.input_data = ide_input_data,
	312	.output_data = ide_output_data,
	313	};