[linux-2.6-block.git] / drivers / ata / pata_artop.c

/*
 *    pata_artop.c - ARTOP ATA controller driver
 *
 *	(C) 2006 Red Hat <alan@redhat.com>
 *	(C) 2007 Bartlomiej Zolnierkiewicz
 *
 *    Based in part on drivers/ide/pci/aec62xx.c
 *	Copyright (C) 1999-2002	Andre Hedrick <andre@linux-ide.org>
 *	865/865R fixes for Macintosh card version from a patch to the old
 *		driver by Thibaut VARENE <varenet@parisc-linux.org>
 *	When setting the PCI latency we must set 0x80 or higher for burst
 *		performance Alessandro Zummo <alessandro.zummo@towertech.it>
 *
 *	TODO
 *	850 serialization once the core supports it
 *	Investigate no_dsc on 850R
 *	Clock detect
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <scsi/scsi_host.h>
#include <linux/libata.h>
#include <linux/ata.h>

#define DRV_NAME	"pata_artop"
#define DRV_VERSION	"0.4.4"

/*
 *	The ARTOP has 33 Mhz and "over clocked" timing tables. Until we
 *	get PCI bus speed functionality we leave this as 0. Its a variable
 *	for when we get the functionality and also for folks wanting to
 *	test stuff.
 */

static int clock = 0;

static int artop6210_pre_reset(struct ata_link *link, unsigned long deadline)
{
	struct ata_port *ap = link->ap;
	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
	const struct pci_bits artop_enable_bits[] = {
		{ 0x4AU, 1U, 0x02UL, 0x02UL },	/* port 0 */
		{ 0x4AU, 1U, 0x04UL, 0x04UL },	/* port 1 */
	};

	if (!pci_test_config_bits(pdev, &artop_enable_bits[ap->port_no]))
		return -ENOENT;

	return ata_std_prereset(link, deadline);
}

/**
 *	artop6210_error_handler - Probe specified port on PATA host controller
 *	@ap: Port to probe
 *
 *	LOCKING:
 *	None (inherited from caller).
 */

static void artop6210_error_handler(struct ata_port *ap)
{
	ata_bmdma_drive_eh(ap, artop6210_pre_reset,
				    ata_std_softreset, NULL,
				    ata_std_postreset);
}

/**
 *	artop6260_pre_reset	-	check for 40/80 pin
 *	@link: link
 *	@deadline: deadline jiffies for the operation
 *
 *	The ARTOP hardware reports the cable detect bits in register 0x49.
 *	Nothing complicated needed here.
 */

static int artop6260_pre_reset(struct ata_link *link, unsigned long deadline)
{
	static const struct pci_bits artop_enable_bits[] = {
		{ 0x4AU, 1U, 0x02UL, 0x02UL },	/* port 0 */
		{ 0x4AU, 1U, 0x04UL, 0x04UL },	/* port 1 */
	};

	struct ata_port *ap = link->ap;
	struct pci_dev *pdev = to_pci_dev(ap->host->dev);

	/* Odd numbered device ids are the units with enable bits (the -R cards) */
	if (pdev->device % 1 && !pci_test_config_bits(pdev, &artop_enable_bits[ap->port_no]))
		return -ENOENT;

	return ata_std_prereset(link, deadline);
}

/**
 *	artop6260_cable_detect	-	identify cable type
 *	@ap: Port
 *
 *	Identify the cable type for the ARTOP interface in question
 */

static int artop6260_cable_detect(struct ata_port *ap)
{
	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
	u8 tmp;
	pci_read_config_byte(pdev, 0x49, &tmp);
	if (tmp & (1 << ap->port_no))
		return ATA_CBL_PATA40;
	return ATA_CBL_PATA80;
}

/**
 *	artop6260_error_handler - Probe specified port on PATA host controller
 *	@ap: Port to probe
 *
 *	LOCKING:
 *	None (inherited from caller).
 */

static void artop6260_error_handler(struct ata_port *ap)
{
	ata_bmdma_drive_eh(ap, artop6260_pre_reset,
				    ata_std_softreset, NULL,
				    ata_std_postreset);
}

/**
 *	artop6210_load_piomode - Load a set of PATA PIO timings
 *	@ap: Port whose timings we are configuring
 *	@adev: Device
 *	@pio: PIO mode
 *
 *	Set PIO mode for device, in host controller PCI config space. This
 *	is used both to set PIO timings in PIO mode and also to set the
 *	matching PIO clocking for UDMA, as well as the MWDMA timings.
 *
 *	LOCKING:
 *	None (inherited from caller).
 */

static void artop6210_load_piomode(struct ata_port *ap, struct ata_device *adev, unsigned int pio)
{
	struct pci_dev *pdev	= to_pci_dev(ap->host->dev);
	int dn = adev->devno + 2 * ap->port_no;
	const u16 timing[2][5] = {
		{ 0x0000, 0x000A, 0x0008, 0x0303, 0x0301 },
		{ 0x0700, 0x070A, 0x0708, 0x0403, 0x0401 }

	};
	/* Load the PIO timing active/recovery bits */
	pci_write_config_word(pdev, 0x40 + 2 * dn, timing[clock][pio]);
}

/**
 *	artop6210_set_piomode - Initialize host controller PATA PIO timings
 *	@ap: Port whose timings we are configuring
 *	@adev: Device we are configuring
 *
 *	Set PIO mode for device, in host controller PCI config space. For
 *	ARTOP we must also clear the UDMA bits if we are not doing UDMA. In
 *	the event UDMA is used the later call to set_dmamode will set the
 *	bits as required.
 *
 *	LOCKING:
 *	None (inherited from caller).
 */

static void artop6210_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
	struct pci_dev *pdev	= to_pci_dev(ap->host->dev);
	int dn = adev->devno + 2 * ap->port_no;
	u8 ultra;

	artop6210_load_piomode(ap, adev, adev->pio_mode - XFER_PIO_0);

	/* Clear the UDMA mode bits (set_dmamode will redo this if needed) */
	pci_read_config_byte(pdev, 0x54, &ultra);
	ultra &= ~(3 << (2 * dn));
	pci_write_config_byte(pdev, 0x54, ultra);
}

/**
 *	artop6260_load_piomode - Initialize host controller PATA PIO timings
 *	@ap: Port whose timings we are configuring
 *	@adev: Device we are configuring
 *	@pio: PIO mode
 *
 *	Set PIO mode for device, in host controller PCI config space. The
 *	ARTOP6260 and relatives store the timing data differently.
 *
 *	LOCKING:
 *	None (inherited from caller).
 */

static void artop6260_load_piomode (struct ata_port *ap, struct ata_device *adev, unsigned int pio)
{
	struct pci_dev *pdev	= to_pci_dev(ap->host->dev);
	int dn = adev->devno + 2 * ap->port_no;
	const u8 timing[2][5] = {
		{ 0x00, 0x0A, 0x08, 0x33, 0x31 },
		{ 0x70, 0x7A, 0x78, 0x43, 0x41 }

	};
	/* Load the PIO timing active/recovery bits */
	pci_write_config_byte(pdev, 0x40 + dn, timing[clock][pio]);
}

/**
 *	artop6260_set_piomode - Initialize host controller PATA PIO timings
 *	@ap: Port whose timings we are configuring
 *	@adev: Device we are configuring
 *
 *	Set PIO mode for device, in host controller PCI config space. For
 *	ARTOP we must also clear the UDMA bits if we are not doing UDMA. In
 *	the event UDMA is used the later call to set_dmamode will set the
 *	bits as required.
 *
 *	LOCKING:
 *	None (inherited from caller).
 */

static void artop6260_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
	struct pci_dev *pdev	= to_pci_dev(ap->host->dev);
	u8 ultra;

	artop6260_load_piomode(ap, adev, adev->pio_mode - XFER_PIO_0);

	/* Clear the UDMA mode bits (set_dmamode will redo this if needed) */
	pci_read_config_byte(pdev, 0x44 + ap->port_no, &ultra);
	ultra &= ~(7 << (4  * adev->devno));	/* One nibble per drive */
	pci_write_config_byte(pdev, 0x44 + ap->port_no, ultra);
}

/**
 *	artop6210_set_dmamode - Initialize host controller PATA PIO timings
 *	@ap: Port whose timings we are configuring
 *	@adev: Device whose timings we are configuring
 *
 *	Set DMA mode for device, in host controller PCI config space.
 *
 *	LOCKING:
 *	None (inherited from caller).
 */

static void artop6210_set_dmamode (struct ata_port *ap, struct ata_device *adev)
{
	unsigned int pio;
	struct pci_dev *pdev	= to_pci_dev(ap->host->dev);
	int dn = adev->devno + 2 * ap->port_no;
	u8 ultra;

	if (adev->dma_mode == XFER_MW_DMA_0)
		pio = 1;
	else
		pio = 4;

	/* Load the PIO timing active/recovery bits */
	artop6210_load_piomode(ap, adev, pio);

	pci_read_config_byte(pdev, 0x54, &ultra);
	ultra &= ~(3 << (2 * dn));

	/* Add ultra DMA bits if in UDMA mode */
	if (adev->dma_mode >= XFER_UDMA_0) {
		u8 mode = (adev->dma_mode - XFER_UDMA_0) + 1 - clock;
		if (mode == 0)
			mode = 1;
		ultra |= (mode << (2 * dn));
	}
	pci_write_config_byte(pdev, 0x54, ultra);
}

/**
 *	artop6260_set_dmamode - Initialize host controller PATA PIO timings
 *	@ap: Port whose timings we are configuring
 *	@adev: Device we are configuring
 *
 *	Set DMA mode for device, in host controller PCI config space. The
 *	ARTOP6260 and relatives store the timing data differently.
 *
 *	LOCKING:
 *	None (inherited from caller).
 */

static void artop6260_set_dmamode (struct ata_port *ap, struct ata_device *adev)
{
	unsigned int pio	= adev->pio_mode - XFER_PIO_0;
	struct pci_dev *pdev	= to_pci_dev(ap->host->dev);
	u8 ultra;

	if (adev->dma_mode == XFER_MW_DMA_0)
		pio = 1;
	else
		pio = 4;

	/* Load the PIO timing active/recovery bits */
	artop6260_load_piomode(ap, adev, pio);

	/* Add ultra DMA bits if in UDMA mode */
	pci_read_config_byte(pdev, 0x44 + ap->port_no, &ultra);
	ultra &= ~(7 << (4  * adev->devno));	/* One nibble per drive */
	if (adev->dma_mode >= XFER_UDMA_0) {
		u8 mode = adev->dma_mode - XFER_UDMA_0 + 1 - clock;
		if (mode == 0)
			mode = 1;
		ultra |= (mode << (4 * adev->devno));
	}
	pci_write_config_byte(pdev, 0x44 + ap->port_no, ultra);
}

static struct scsi_host_template artop_sht = {
	.module			= THIS_MODULE,
	.name			= DRV_NAME,
	.ioctl			= ata_scsi_ioctl,
	.queuecommand		= ata_scsi_queuecmd,
	.can_queue		= ATA_DEF_QUEUE,
	.this_id		= ATA_SHT_THIS_ID,
	.sg_tablesize		= LIBATA_MAX_PRD,
	.cmd_per_lun		= ATA_SHT_CMD_PER_LUN,
	.emulated		= ATA_SHT_EMULATED,
	.use_clustering		= ATA_SHT_USE_CLUSTERING,
	.proc_name		= DRV_NAME,
	.dma_boundary		= ATA_DMA_BOUNDARY,
	.slave_configure	= ata_scsi_slave_config,
	.slave_destroy		= ata_scsi_slave_destroy,
	.bios_param		= ata_std_bios_param,
};

static const struct ata_port_operations artop6210_ops = {
	.set_piomode		= artop6210_set_piomode,
	.set_dmamode		= artop6210_set_dmamode,
	.mode_filter		= ata_pci_default_filter,

	.tf_load		= ata_tf_load,
	.tf_read		= ata_tf_read,
	.check_status		= ata_check_status,
	.exec_command		= ata_exec_command,
	.dev_select		= ata_std_dev_select,

	.freeze			= ata_bmdma_freeze,
	.thaw			= ata_bmdma_thaw,
	.error_handler		= artop6210_error_handler,
	.post_internal_cmd 	= ata_bmdma_post_internal_cmd,
	.cable_detect		= ata_cable_40wire,

	.bmdma_setup		= ata_bmdma_setup,
	.bmdma_start		= ata_bmdma_start,
	.bmdma_stop		= ata_bmdma_stop,
	.bmdma_status		= ata_bmdma_status,
	.qc_prep		= ata_qc_prep,
	.qc_issue		= ata_qc_issue_prot,

	.data_xfer		= ata_data_xfer,

	.irq_handler		= ata_interrupt,
	.irq_clear		= ata_bmdma_irq_clear,
	.irq_on			= ata_irq_on,

	.port_start		= ata_sff_port_start,
};

static const struct ata_port_operations artop6260_ops = {
	.set_piomode		= artop6260_set_piomode,
	.set_dmamode		= artop6260_set_dmamode,

	.tf_load		= ata_tf_load,
	.tf_read		= ata_tf_read,
	.check_status		= ata_check_status,
	.exec_command		= ata_exec_command,
	.dev_select		= ata_std_dev_select,

	.freeze			= ata_bmdma_freeze,
	.thaw			= ata_bmdma_thaw,
	.error_handler		= artop6260_error_handler,
	.post_internal_cmd 	= ata_bmdma_post_internal_cmd,
	.cable_detect		= artop6260_cable_detect,

	.bmdma_setup		= ata_bmdma_setup,
	.bmdma_start		= ata_bmdma_start,
	.bmdma_stop		= ata_bmdma_stop,
	.bmdma_status		= ata_bmdma_status,
	.qc_prep		= ata_qc_prep,
	.qc_issue		= ata_qc_issue_prot,
	.data_xfer		= ata_data_xfer,

	.irq_handler		= ata_interrupt,
	.irq_clear		= ata_bmdma_irq_clear,
	.irq_on			= ata_irq_on,

	.port_start		= ata_sff_port_start,
};


/**
 *	artop_init_one - Register ARTOP ATA PCI device with kernel services
 *	@pdev: PCI device to register
 *	@ent: Entry in artop_pci_tbl matching with @pdev
 *
 *	Called from kernel PCI layer.
 *
 *	LOCKING:
 *	Inherited from PCI layer (may sleep).
 *
 *	RETURNS:
 *	Zero on success, or -ERRNO value.
 */

static int artop_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
{
	static int printed_version;
	static const struct ata_port_info info_6210 = {
		.sht		= &artop_sht,
		.flags		= ATA_FLAG_SLAVE_POSS,
		.pio_mask	= 0x1f,	/* pio0-4 */
		.mwdma_mask	= 0x07, /* mwdma0-2 */
		.udma_mask 	= ATA_UDMA2,
		.port_ops	= &artop6210_ops,
	};
	static const struct ata_port_info info_626x = {
		.sht		= &artop_sht,
		.flags		= ATA_FLAG_SLAVE_POSS,
		.pio_mask	= 0x1f,	/* pio0-4 */
		.mwdma_mask	= 0x07, /* mwdma0-2 */
		.udma_mask 	= ATA_UDMA4,
		.port_ops	= &artop6260_ops,
	};
	static const struct ata_port_info info_628x = {
		.sht		= &artop_sht,
		.flags		= ATA_FLAG_SLAVE_POSS,
		.pio_mask	= 0x1f,	/* pio0-4 */
		.mwdma_mask	= 0x07, /* mwdma0-2 */
		.udma_mask 	= ATA_UDMA5,
		.port_ops	= &artop6260_ops,
	};
	static const struct ata_port_info info_628x_fast = {
		.sht		= &artop_sht,
		.flags		= ATA_FLAG_SLAVE_POSS,
		.pio_mask	= 0x1f,	/* pio0-4 */
		.mwdma_mask	= 0x07, /* mwdma0-2 */
		.udma_mask 	= ATA_UDMA6,
		.port_ops	= &artop6260_ops,
	};
	const struct ata_port_info *ppi[] = { NULL, NULL };

	if (!printed_version++)
		dev_printk(KERN_DEBUG, &pdev->dev,
			   "version " DRV_VERSION "\n");

	if (id->driver_data == 0) {	/* 6210 variant */
		ppi[0] = &info_6210;
		ppi[1] = &ata_dummy_port_info;
		/* BIOS may have left us in UDMA, clear it before libata probe */
		pci_write_config_byte(pdev, 0x54, 0);
		/* For the moment (also lacks dsc) */
		printk(KERN_WARNING "ARTOP 6210 requires serialize functionality not yet supported by libata.\n");
		printk(KERN_WARNING "Secondary ATA ports will not be activated.\n");
	}
	else if (id->driver_data == 1)	/* 6260 */
		ppi[0] = &info_626x;
	else if (id->driver_data == 2)	{ /* 6280 or 6280 + fast */
		unsigned long io = pci_resource_start(pdev, 4);
		u8 reg;

		ppi[0] = &info_628x;
		if (inb(io) & 0x10)
			ppi[0] = &info_628x_fast;
		/* Mac systems come up with some registers not set as we
		   will need them */

		/* Clear reset & test bits */
		pci_read_config_byte(pdev, 0x49, &reg);
		pci_write_config_byte(pdev, 0x49, reg & ~ 0x30);

		/* PCI latency must be > 0x80 for burst mode, tweak it
		 * if required.
		 */
		pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &reg);
		if (reg <= 0x80)
			pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x90);

		/* Enable IRQ output and burst mode */
		pci_read_config_byte(pdev, 0x4a, &reg);
		pci_write_config_byte(pdev, 0x4a, (reg & ~0x01) | 0x80);

	}

	BUG_ON(ppi[0] == NULL);

	return ata_pci_init_one(pdev, ppi);
}

static const struct pci_device_id artop_pci_tbl[] = {
	{ PCI_VDEVICE(ARTOP, 0x0005), 0 },
	{ PCI_VDEVICE(ARTOP, 0x0006), 1 },
	{ PCI_VDEVICE(ARTOP, 0x0007), 1 },
	{ PCI_VDEVICE(ARTOP, 0x0008), 2 },
	{ PCI_VDEVICE(ARTOP, 0x0009), 2 },

	{ }	/* terminate list */
};

static struct pci_driver artop_pci_driver = {
	.name			= DRV_NAME,
	.id_table		= artop_pci_tbl,
	.probe			= artop_init_one,
	.remove			= ata_pci_remove_one,
};

static int __init artop_init(void)
{
	return pci_register_driver(&artop_pci_driver);
}

static void __exit artop_exit(void)
{
	pci_unregister_driver(&artop_pci_driver);
}

module_init(artop_init);
module_exit(artop_exit);

MODULE_AUTHOR("Alan Cox");
MODULE_DESCRIPTION("SCSI low-level driver for ARTOP PATA");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, artop_pci_tbl);
MODULE_VERSION(DRV_VERSION);
Commit	Line	Data
669a5db4 JG	1	/*
	2	* pata_artop.c - ARTOP ATA controller driver
	3	*
	4	* (C) 2006 Red Hat <alan@redhat.com>
be456b77	5	* (C) 2007 Bartlomiej Zolnierkiewicz
669a5db4 JG	6	*
	7	* Based in part on drivers/ide/pci/aec62xx.c
	8	* Copyright (C) 1999-2002 Andre Hedrick <andre@linux-ide.org>
	9	* 865/865R fixes for Macintosh card version from a patch to the old
	10	* driver by Thibaut VARENE <varenet@parisc-linux.org>
	11	* When setting the PCI latency we must set 0x80 or higher for burst
	12	* performance Alessandro Zummo <alessandro.zummo@towertech.it>
	13	*
	14	* TODO
	15	* 850 serialization once the core supports it
	16	* Investigate no_dsc on 850R
	17	* Clock detect
	18	*/
	19
	20	#include <linux/kernel.h>
	21	#include <linux/module.h>
	22	#include <linux/pci.h>
	23	#include <linux/init.h>
	24	#include <linux/blkdev.h>
	25	#include <linux/delay.h>
	26	#include <linux/device.h>
	27	#include <scsi/scsi_host.h>
	28	#include <linux/libata.h>
	29	#include <linux/ata.h>
	30
	31	#define DRV_NAME "pata_artop"
be456b77	32	#define DRV_VERSION "0.4.4"
669a5db4 JG	33
	34	/*
	35	* The ARTOP has 33 Mhz and "over clocked" timing tables. Until we
	36	* get PCI bus speed functionality we leave this as 0. Its a variable
	37	* for when we get the functionality and also for folks wanting to
	38	* test stuff.
	39	*/
	40
	41	static int clock = 0;
	42
cc0680a5	43	static int artop6210_pre_reset(struct ata_link *link, unsigned long deadline)
669a5db4	44	{
cc0680a5	45	struct ata_port *ap = link->ap;
669a5db4 JG	46	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
	47	const struct pci_bits artop_enable_bits[] = {
	48	{ 0x4AU, 1U, 0x02UL, 0x02UL }, /* port 0 */
	49	{ 0x4AU, 1U, 0x04UL, 0x04UL }, /* port 1 */
	50	};
	51
c961922b AC	52	if (!pci_test_config_bits(pdev, &artop_enable_bits[ap->port_no]))
c961922b AC	53	return -ENOENT;
d4b2bab4	54
cc0680a5	55	return ata_std_prereset(link, deadline);
669a5db4 JG	56	}
	57
	58	/**
	59	* artop6210_error_handler - Probe specified port on PATA host controller
	60	* @ap: Port to probe
	61	*
	62	* LOCKING:
	63	* None (inherited from caller).
	64	*/
	65
	66	static void artop6210_error_handler(struct ata_port *ap)
	67	{
	68	ata_bmdma_drive_eh(ap, artop6210_pre_reset,
	69	ata_std_softreset, NULL,
	70	ata_std_postreset);
	71	}
	72
	73	/**
	74	* artop6260_pre_reset - check for 40/80 pin
cc0680a5	75	* @link: link
d4b2bab4	76	* @deadline: deadline jiffies for the operation
669a5db4 JG	77	*
	78	* The ARTOP hardware reports the cable detect bits in register 0x49.
	79	* Nothing complicated needed here.
	80	*/
	81
cc0680a5	82	static int artop6260_pre_reset(struct ata_link *link, unsigned long deadline)
669a5db4 JG	83	{
	84	static const struct pci_bits artop_enable_bits[] = {
	85	{ 0x4AU, 1U, 0x02UL, 0x02UL }, /* port 0 */
	86	{ 0x4AU, 1U, 0x04UL, 0x04UL }, /* port 1 */
	87	};
	88
cc0680a5	89	struct ata_port *ap = link->ap;
669a5db4	90	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
669a5db4 JG	91
669a5db4 JG	92	/* Odd numbered device ids are the units with enable bits (the -R cards) */
c961922b AC	93	if (pdev->device % 1 && !pci_test_config_bits(pdev, &artop_enable_bits[ap->port_no]))
c961922b AC	94	return -ENOENT;
27c78b37	95
cc0680a5	96	return ata_std_prereset(link, deadline);
a73984a0	97	}
c961922b	98
a73984a0 JG	99	/**
	100	* artop6260_cable_detect - identify cable type
	101	* @ap: Port
	102	*
c343a839	103	* Identify the cable type for the ARTOP interface in question
a73984a0	104	*/
a617c09f	105
a73984a0 JG	106	static int artop6260_cable_detect(struct ata_port *ap)
	107	{
	108	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
	109	u8 tmp;
669a5db4	110	pci_read_config_byte(pdev, 0x49, &tmp);
3f9dd27a	111	if (tmp & (1 << ap->port_no))
a73984a0 JG	112	return ATA_CBL_PATA40;
a73984a0 JG	113	return ATA_CBL_PATA80;
669a5db4 JG	114	}
	115
	116	/**
	117	* artop6260_error_handler - Probe specified port on PATA host controller
	118	* @ap: Port to probe
	119	*
	120	* LOCKING:
	121	* None (inherited from caller).
	122	*/
	123
	124	static void artop6260_error_handler(struct ata_port *ap)
	125	{
	126	ata_bmdma_drive_eh(ap, artop6260_pre_reset,
	127	ata_std_softreset, NULL,
	128	ata_std_postreset);
	129	}
	130
	131	/**
	132	* artop6210_load_piomode - Load a set of PATA PIO timings
	133	* @ap: Port whose timings we are configuring
	134	* @adev: Device
	135	* @pio: PIO mode
	136	*
	137	* Set PIO mode for device, in host controller PCI config space. This
	138	* is used both to set PIO timings in PIO mode and also to set the
	139	* matching PIO clocking for UDMA, as well as the MWDMA timings.
	140	*
	141	* LOCKING:
	142	* None (inherited from caller).
	143	*/
	144
	145	static void artop6210_load_piomode(struct ata_port ap, struct ata_device adev, unsigned int pio)
	146	{
	147	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
	148	int dn = adev->devno + 2 * ap->port_no;
	149	const u16 timing[2][5] = {
	150	{ 0x0000, 0x000A, 0x0008, 0x0303, 0x0301 },
	151	{ 0x0700, 0x070A, 0x0708, 0x0403, 0x0401 }
	152
	153	};
	154	/* Load the PIO timing active/recovery bits */
	155	pci_write_config_word(pdev, 0x40 + 2 * dn, timing[clock][pio]);
	156	}
	157
	158	/**
	159	* artop6210_set_piomode - Initialize host controller PATA PIO timings
	160	* @ap: Port whose timings we are configuring
	161	* @adev: Device we are configuring
	162	*
	163	* Set PIO mode for device, in host controller PCI config space. For
	164	* ARTOP we must also clear the UDMA bits if we are not doing UDMA. In
	165	* the event UDMA is used the later call to set_dmamode will set the
	166	* bits as required.
	167	*
	168	* LOCKING:
	169	* None (inherited from caller).
	170	*/
	171
	172	static void artop6210_set_piomode(struct ata_port ap, struct ata_device adev)
	173	{
	174	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
	175	int dn = adev->devno + 2 * ap->port_no;
	176	u8 ultra;
	177
178	artop6210_load_piomode(ap, adev, adev->pio_mode - XFER_PIO_0);
179
180	/* Clear the UDMA mode bits (set_dmamode will redo this if needed) */
181	pci_read_config_byte(pdev, 0x54, &ultra);
182	ultra &= ~(3 << (2 * dn));
183	pci_write_config_byte(pdev, 0x54, ultra);
184	}
185
186	/**
187	* artop6260_load_piomode - Initialize host controller PATA PIO timings
188	* @ap: Port whose timings we are configuring
189	* @adev: Device we are configuring
190	* @pio: PIO mode
191	*
192	* Set PIO mode for device, in host controller PCI config space. The
193	* ARTOP6260 and relatives store the timing data differently.
194	*
195	* LOCKING:
196	* None (inherited from caller).
197	*/
198
199	static void artop6260_load_piomode (struct ata_port ap, struct ata_device adev, unsigned int pio)
200	{
201	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
202	int dn = adev->devno + 2 * ap->port_no;
203	const u8 timing[2][5] = {
204	{ 0x00, 0x0A, 0x08, 0x33, 0x31 },
205	{ 0x70, 0x7A, 0x78, 0x43, 0x41 }
206
207	};
208	/* Load the PIO timing active/recovery bits */
209	pci_write_config_byte(pdev, 0x40 + dn, timing[clock][pio]);
210	}
211
212	/**
213	* artop6260_set_piomode - Initialize host controller PATA PIO timings
214	* @ap: Port whose timings we are configuring
215	* @adev: Device we are configuring
216	*
217	* Set PIO mode for device, in host controller PCI config space. For
218	* ARTOP we must also clear the UDMA bits if we are not doing UDMA. In
219	* the event UDMA is used the later call to set_dmamode will set the
220	* bits as required.
221	*
222	* LOCKING:
223	* None (inherited from caller).
224	*/
225
226	static void artop6260_set_piomode(struct ata_port ap, struct ata_device adev)
227	{
228	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
229	u8 ultra;
230
231	artop6260_load_piomode(ap, adev, adev->pio_mode - XFER_PIO_0);
232
233	/* Clear the UDMA mode bits (set_dmamode will redo this if needed) */
234	pci_read_config_byte(pdev, 0x44 + ap->port_no, &ultra);
235	ultra &= ~(7 << (4 * adev->devno)); /* One nibble per drive */
236	pci_write_config_byte(pdev, 0x44 + ap->port_no, ultra);
237	}
238
239	/**
240	* artop6210_set_dmamode - Initialize host controller PATA PIO timings
241	* @ap: Port whose timings we are configuring
a73984a0	242	* @adev: Device whose timings we are configuring
669a5db4 JG	243	*
	244	* Set DMA mode for device, in host controller PCI config space.
	245	*
	246	* LOCKING:
	247	* None (inherited from caller).
	248	*/
	249
	250	static void artop6210_set_dmamode (struct ata_port ap, struct ata_device adev)
	251	{
	252	unsigned int pio;
	253	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
	254	int dn = adev->devno + 2 * ap->port_no;
	255	u8 ultra;
	256
	257	if (adev->dma_mode == XFER_MW_DMA_0)
	258	pio = 1;
	259	else
	260	pio = 4;
	261
	262	/* Load the PIO timing active/recovery bits */
	263	artop6210_load_piomode(ap, adev, pio);
	264
	265	pci_read_config_byte(pdev, 0x54, &ultra);
	266	ultra &= ~(3 << (2 * dn));
	267
	268	/* Add ultra DMA bits if in UDMA mode */
	269	if (adev->dma_mode >= XFER_UDMA_0) {
	270	u8 mode = (adev->dma_mode - XFER_UDMA_0) + 1 - clock;
	271	if (mode == 0)
	272	mode = 1;
	273	ultra \|= (mode << (2 * dn));
	274	}
	275	pci_write_config_byte(pdev, 0x54, ultra);
	276	}
	277
	278	/**
	279	* artop6260_set_dmamode - Initialize host controller PATA PIO timings
	280	* @ap: Port whose timings we are configuring
	281	* @adev: Device we are configuring
	282	*
	283	* Set DMA mode for device, in host controller PCI config space. The
	284	* ARTOP6260 and relatives store the timing data differently.
	285	*
	286	* LOCKING:
	287	* None (inherited from caller).
	288	*/
	289
	290	static void artop6260_set_dmamode (struct ata_port ap, struct ata_device adev)
	291	{
	292	unsigned int pio = adev->pio_mode - XFER_PIO_0;
	293	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
	294	u8 ultra;
	295
	296	if (adev->dma_mode == XFER_MW_DMA_0)
	297	pio = 1;
	298	else
	299	pio = 4;
	300
	301	/* Load the PIO timing active/recovery bits */
	302	artop6260_load_piomode(ap, adev, pio);
	303
	304	/* Add ultra DMA bits if in UDMA mode */
	305	pci_read_config_byte(pdev, 0x44 + ap->port_no, &ultra);
	306	ultra &= ~(7 << (4 * adev->devno)); /* One nibble per drive */
307	if (adev->dma_mode >= XFER_UDMA_0) {
308	u8 mode = adev->dma_mode - XFER_UDMA_0 + 1 - clock;
309	if (mode == 0)
310	mode = 1;
311	ultra \|= (mode << (4 * adev->devno));
312	}
313	pci_write_config_byte(pdev, 0x44 + ap->port_no, ultra);
314	}
315
316	static struct scsi_host_template artop_sht = {
317	.module = THIS_MODULE,
318	.name = DRV_NAME,
319	.ioctl = ata_scsi_ioctl,
320	.queuecommand = ata_scsi_queuecmd,
321	.can_queue = ATA_DEF_QUEUE,
322	.this_id = ATA_SHT_THIS_ID,
323	.sg_tablesize = LIBATA_MAX_PRD,
669a5db4 JG	324	.cmd_per_lun = ATA_SHT_CMD_PER_LUN,
	325	.emulated = ATA_SHT_EMULATED,
	326	.use_clustering = ATA_SHT_USE_CLUSTERING,
	327	.proc_name = DRV_NAME,
	328	.dma_boundary = ATA_DMA_BOUNDARY,
	329	.slave_configure = ata_scsi_slave_config,
afdfe899	330	.slave_destroy = ata_scsi_slave_destroy,
669a5db4 JG	331	.bios_param = ata_std_bios_param,
	332	};
	333
	334	static const struct ata_port_operations artop6210_ops = {
669a5db4 JG	335	.set_piomode = artop6210_set_piomode,
	336	.set_dmamode = artop6210_set_dmamode,
	337	.mode_filter = ata_pci_default_filter,
	338
	339	.tf_load = ata_tf_load,
	340	.tf_read = ata_tf_read,
	341	.check_status = ata_check_status,
	342	.exec_command = ata_exec_command,
	343	.dev_select = ata_std_dev_select,
	344
	345	.freeze = ata_bmdma_freeze,
	346	.thaw = ata_bmdma_thaw,
	347	.error_handler = artop6210_error_handler,
	348	.post_internal_cmd = ata_bmdma_post_internal_cmd,
a73984a0	349	.cable_detect = ata_cable_40wire,
669a5db4 JG	350
	351	.bmdma_setup = ata_bmdma_setup,
	352	.bmdma_start = ata_bmdma_start,
	353	.bmdma_stop = ata_bmdma_stop,
	354	.bmdma_status = ata_bmdma_status,
	355	.qc_prep = ata_qc_prep,
	356	.qc_issue = ata_qc_issue_prot,
bda30288	357
0d5ff566	358	.data_xfer = ata_data_xfer,
669a5db4 JG	359
	360	.irq_handler = ata_interrupt,
	361	.irq_clear = ata_bmdma_irq_clear,
246ce3b6	362	.irq_on = ata_irq_on,
669a5db4	363
81ad1837	364	.port_start = ata_sff_port_start,
669a5db4 JG	365	};
	366
	367	static const struct ata_port_operations artop6260_ops = {
669a5db4 JG	368	.set_piomode = artop6260_set_piomode,
	369	.set_dmamode = artop6260_set_dmamode,
	370
	371	.tf_load = ata_tf_load,
	372	.tf_read = ata_tf_read,
	373	.check_status = ata_check_status,
	374	.exec_command = ata_exec_command,
	375	.dev_select = ata_std_dev_select,
	376
	377	.freeze = ata_bmdma_freeze,
	378	.thaw = ata_bmdma_thaw,
	379	.error_handler = artop6260_error_handler,
	380	.post_internal_cmd = ata_bmdma_post_internal_cmd,
a73984a0	381	.cable_detect = artop6260_cable_detect,
669a5db4 JG	382
	383	.bmdma_setup = ata_bmdma_setup,
	384	.bmdma_start = ata_bmdma_start,
	385	.bmdma_stop = ata_bmdma_stop,
	386	.bmdma_status = ata_bmdma_status,
	387	.qc_prep = ata_qc_prep,
	388	.qc_issue = ata_qc_issue_prot,
0d5ff566	389	.data_xfer = ata_data_xfer,
669a5db4	390
669a5db4 JG	391	.irq_handler = ata_interrupt,
669a5db4 JG	392	.irq_clear = ata_bmdma_irq_clear,
246ce3b6	393	.irq_on = ata_irq_on,
669a5db4	394
81ad1837	395	.port_start = ata_sff_port_start,
669a5db4 JG	396	};
	397
	398
	399	/**
	400	* artop_init_one - Register ARTOP ATA PCI device with kernel services
	401	* @pdev: PCI device to register
	402	* @ent: Entry in artop_pci_tbl matching with @pdev
	403	*
	404	* Called from kernel PCI layer.
	405	*
	406	* LOCKING:
	407	* Inherited from PCI layer (may sleep).
	408	*
	409	* RETURNS:
	410	* Zero on success, or -ERRNO value.
	411	*/
	412
	413	static int artop_init_one (struct pci_dev pdev, const struct pci_device_id id)
	414	{
	415	static int printed_version;
1626aeb8	416	static const struct ata_port_info info_6210 = {
669a5db4	417	.sht = &artop_sht,
1d2808fd	418	.flags = ATA_FLAG_SLAVE_POSS,
669a5db4 JG	419	.pio_mask = 0x1f, /* pio0-4 */
	420	.mwdma_mask = 0x07, /* mwdma0-2 */
	421	.udma_mask = ATA_UDMA2,
	422	.port_ops = &artop6210_ops,
	423	};
1626aeb8	424	static const struct ata_port_info info_626x = {
669a5db4	425	.sht = &artop_sht,
1d2808fd	426	.flags = ATA_FLAG_SLAVE_POSS,
669a5db4 JG	427	.pio_mask = 0x1f, /* pio0-4 */
	428	.mwdma_mask = 0x07, /* mwdma0-2 */
	429	.udma_mask = ATA_UDMA4,
	430	.port_ops = &artop6260_ops,
	431	};
be456b77	432	static const struct ata_port_info info_628x = {
669a5db4	433	.sht = &artop_sht,
1d2808fd	434	.flags = ATA_FLAG_SLAVE_POSS,
669a5db4 JG	435	.pio_mask = 0x1f, /* pio0-4 */
	436	.mwdma_mask = 0x07, /* mwdma0-2 */
	437	.udma_mask = ATA_UDMA5,
	438	.port_ops = &artop6260_ops,
	439	};
be456b77 BZ	440	static const struct ata_port_info info_628x_fast = {
	441	.sht = &artop_sht,
	442	.flags = ATA_FLAG_SLAVE_POSS,
	443	.pio_mask = 0x1f, /* pio0-4 */
	444	.mwdma_mask = 0x07, /* mwdma0-2 */
	445	.udma_mask = ATA_UDMA6,
	446	.port_ops = &artop6260_ops,
	447	};
1626aeb8	448	const struct ata_port_info *ppi[] = { NULL, NULL };
669a5db4 JG	449
	450	if (!printed_version++)
	451	dev_printk(KERN_DEBUG, &pdev->dev,
	452	"version " DRV_VERSION "\n");
	453
	454	if (id->driver_data == 0) { /* 6210 variant */
1626aeb8 TH	455	ppi[0] = &info_6210;
1626aeb8 TH	456	ppi[1] = &ata_dummy_port_info;
669a5db4 JG	457	/* BIOS may have left us in UDMA, clear it before libata probe */
	458	pci_write_config_byte(pdev, 0x54, 0);
	459	/* For the moment (also lacks dsc) */
	460	printk(KERN_WARNING "ARTOP 6210 requires serialize functionality not yet supported by libata.\n");
	461	printk(KERN_WARNING "Secondary ATA ports will not be activated.\n");
669a5db4 JG	462	}
669a5db4 JG	463	else if (id->driver_data == 1) /* 6260 */
1626aeb8	464	ppi[0] = &info_626x;
be456b77	465	else if (id->driver_data == 2) { /* 6280 or 6280 + fast */
669a5db4 JG	466	unsigned long io = pci_resource_start(pdev, 4);
	467	u8 reg;
	468
be456b77	469	ppi[0] = &info_628x;
669a5db4	470	if (inb(io) & 0x10)
be456b77	471	ppi[0] = &info_628x_fast;
669a5db4 JG	472	/* Mac systems come up with some registers not set as we
	473	will need them */
	474
	475	/* Clear reset & test bits */
	476	pci_read_config_byte(pdev, 0x49, &reg);
	477	pci_write_config_byte(pdev, 0x49, reg & ~ 0x30);
	478
	479	/* PCI latency must be > 0x80 for burst mode, tweak it
	480	* if required.
	481	*/
	482	pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &reg);
	483	if (reg <= 0x80)
	484	pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x90);
	485
	486	/* Enable IRQ output and burst mode */
	487	pci_read_config_byte(pdev, 0x4a, &reg);
	488	pci_write_config_byte(pdev, 0x4a, (reg & ~0x01) \| 0x80);
	489
	490	}
15a7c3bb	491
1626aeb8	492	BUG_ON(ppi[0] == NULL);
15a7c3bb	493
1626aeb8	494	return ata_pci_init_one(pdev, ppi);
669a5db4 JG	495	}
	496
	497	static const struct pci_device_id artop_pci_tbl[] = {
2d2744fc JG	498	{ PCI_VDEVICE(ARTOP, 0x0005), 0 },
	499	{ PCI_VDEVICE(ARTOP, 0x0006), 1 },
	500	{ PCI_VDEVICE(ARTOP, 0x0007), 1 },
	501	{ PCI_VDEVICE(ARTOP, 0x0008), 2 },
	502	{ PCI_VDEVICE(ARTOP, 0x0009), 2 },
	503
669a5db4 JG	504	{ } /* terminate list */
	505	};
	506
	507	static struct pci_driver artop_pci_driver = {
	508	.name = DRV_NAME,
	509	.id_table = artop_pci_tbl,
	510	.probe = artop_init_one,
	511	.remove = ata_pci_remove_one,
	512	};
	513
	514	static int __init artop_init(void)
	515	{
	516	return pci_register_driver(&artop_pci_driver);
	517	}
	518
	519	static void __exit artop_exit(void)
	520	{
	521	pci_unregister_driver(&artop_pci_driver);
	522	}
	523
669a5db4 JG	524	module_init(artop_init);
	525	module_exit(artop_exit);
	526
	527	MODULE_AUTHOR("Alan Cox");
	528	MODULE_DESCRIPTION("SCSI low-level driver for ARTOP PATA");
	529	MODULE_LICENSE("GPL");
	530	MODULE_DEVICE_TABLE(pci, artop_pci_tbl);
	531	MODULE_VERSION(DRV_VERSION);
	532