[deliverable/linux.git] / drivers / ata / pata_hpt366.c

/*
 * Libata driver for the highpoint 366 and 368 UDMA66 ATA controllers.
 *
 * This driver is heavily based upon:
 *
 * linux/drivers/ide/pci/hpt366.c		Version 0.36	April 25, 2003
 *
 * Copyright (C) 1999-2003		Andre Hedrick <andre@linux-ide.org>
 * Portions Copyright (C) 2001	        Sun Microsystems, Inc.
 * Portions Copyright (C) 2003		Red Hat Inc
 *
 *
 * TODO
 *	Maybe PLL mode
 *	Look into engine reset on timeout errors. Should not be
 *		required.
 */


#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 <scsi/scsi_host.h>
#include <linux/libata.h>

#define DRV_NAME	"pata_hpt366"
#define DRV_VERSION	"0.6.1"

struct hpt_clock {
	u8	xfer_speed;
	u32	timing;
};

/* key for bus clock timings
 * bit
 * 0:3    data_high_time. inactive time of DIOW_/DIOR_ for PIO and MW
 *        DMA. cycles = value + 1
 * 4:8    data_low_time. active time of DIOW_/DIOR_ for PIO and MW
 *        DMA. cycles = value + 1
 * 9:12   cmd_high_time. inactive time of DIOW_/DIOR_ during task file
 *        register access.
 * 13:17  cmd_low_time. active time of DIOW_/DIOR_ during task file
 *        register access.
 * 18:21  udma_cycle_time. clock freq and clock cycles for UDMA xfer.
 *        during task file register access.
 * 22:24  pre_high_time. time to initialize 1st cycle for PIO and MW DMA
 *        xfer.
 * 25:27  cmd_pre_high_time. time to initialize 1st PIO cycle for task
 *        register access.
 * 28     UDMA enable
 * 29     DMA enable
 * 30     PIO_MST enable. if set, the chip is in bus master mode during
 *        PIO.
 * 31     FIFO enable.
 */

static const struct hpt_clock hpt366_40[] = {
	{	XFER_UDMA_4,	0x900fd943	},
	{	XFER_UDMA_3,	0x900ad943	},
	{	XFER_UDMA_2,	0x900bd943	},
	{	XFER_UDMA_1,	0x9008d943	},
	{	XFER_UDMA_0,	0x9008d943	},

	{	XFER_MW_DMA_2,	0xa008d943	},
	{	XFER_MW_DMA_1,	0xa010d955	},
	{	XFER_MW_DMA_0,	0xa010d9fc	},

	{	XFER_PIO_4,	0xc008d963	},
	{	XFER_PIO_3,	0xc010d974	},
	{	XFER_PIO_2,	0xc010d997	},
	{	XFER_PIO_1,	0xc010d9c7	},
	{	XFER_PIO_0,	0xc018d9d9	},
	{	0,		0x0120d9d9	}
};

static const struct hpt_clock hpt366_33[] = {
	{	XFER_UDMA_4,	0x90c9a731	},
	{	XFER_UDMA_3,	0x90cfa731	},
	{	XFER_UDMA_2,	0x90caa731	},
	{	XFER_UDMA_1,	0x90cba731	},
	{	XFER_UDMA_0,	0x90c8a731	},

	{	XFER_MW_DMA_2,	0xa0c8a731	},
	{	XFER_MW_DMA_1,	0xa0c8a732	},	/* 0xa0c8a733 */
	{	XFER_MW_DMA_0,	0xa0c8a797	},

	{	XFER_PIO_4,	0xc0c8a731	},
	{	XFER_PIO_3,	0xc0c8a742	},
	{	XFER_PIO_2,	0xc0d0a753	},
	{	XFER_PIO_1,	0xc0d0a7a3	},	/* 0xc0d0a793 */
	{	XFER_PIO_0,	0xc0d0a7aa	},	/* 0xc0d0a7a7 */
	{	0,		0x0120a7a7	}
};

static const struct hpt_clock hpt366_25[] = {
	{	XFER_UDMA_4,	0x90c98521	},
	{	XFER_UDMA_3,	0x90cf8521	},
	{	XFER_UDMA_2,	0x90cf8521	},
	{	XFER_UDMA_1,	0x90cb8521	},
	{	XFER_UDMA_0,	0x90cb8521	},

	{	XFER_MW_DMA_2,	0xa0ca8521	},
	{	XFER_MW_DMA_1,	0xa0ca8532	},
	{	XFER_MW_DMA_0,	0xa0ca8575	},

	{	XFER_PIO_4,	0xc0ca8521	},
	{	XFER_PIO_3,	0xc0ca8532	},
	{	XFER_PIO_2,	0xc0ca8542	},
	{	XFER_PIO_1,	0xc0d08572	},
	{	XFER_PIO_0,	0xc0d08585	},
	{	0,		0x01208585	}
};

static const char *bad_ata33[] = {
	"Maxtor 92720U8", "Maxtor 92040U6", "Maxtor 91360U4", "Maxtor 91020U3", "Maxtor 90845U3", "Maxtor 90650U2",
	"Maxtor 91360D8", "Maxtor 91190D7", "Maxtor 91020D6", "Maxtor 90845D5", "Maxtor 90680D4", "Maxtor 90510D3", "Maxtor 90340D2",
	"Maxtor 91152D8", "Maxtor 91008D7", "Maxtor 90845D6", "Maxtor 90840D6", "Maxtor 90720D5", "Maxtor 90648D5", "Maxtor 90576D4",
	"Maxtor 90510D4",
	"Maxtor 90432D3", "Maxtor 90288D2", "Maxtor 90256D2",
	"Maxtor 91000D8", "Maxtor 90910D8", "Maxtor 90875D7", "Maxtor 90840D7", "Maxtor 90750D6", "Maxtor 90625D5", "Maxtor 90500D4",
	"Maxtor 91728D8", "Maxtor 91512D7", "Maxtor 91303D6", "Maxtor 91080D5", "Maxtor 90845D4", "Maxtor 90680D4", "Maxtor 90648D3", "Maxtor 90432D2",
	NULL
};

static const char *bad_ata66_4[] = {
	"IBM-DTLA-307075",
	"IBM-DTLA-307060",
	"IBM-DTLA-307045",
	"IBM-DTLA-307030",
	"IBM-DTLA-307020",
	"IBM-DTLA-307015",
	"IBM-DTLA-305040",
	"IBM-DTLA-305030",
	"IBM-DTLA-305020",
	"IC35L010AVER07-0",
	"IC35L020AVER07-0",
	"IC35L030AVER07-0",
	"IC35L040AVER07-0",
	"IC35L060AVER07-0",
	"WDC AC310200R",
	NULL
};

static const char *bad_ata66_3[] = {
	"WDC AC310200R",
	NULL
};

static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr, const char *list[])
{
	unsigned char model_num[ATA_ID_PROD_LEN + 1];
	int i = 0;

	ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));

	while (list[i] != NULL) {
		if (!strcmp(list[i], model_num)) {
			printk(KERN_WARNING DRV_NAME ": %s is not supported for %s.\n",
				modestr, list[i]);
			return 1;
		}
		i++;
	}
	return 0;
}

/**
 *	hpt366_filter	-	mode selection filter
 *	@adev: ATA device
 *
 *	Block UDMA on devices that cause trouble with this controller.
 */

static unsigned long hpt366_filter(struct ata_device *adev, unsigned long mask)
{
	if (adev->class == ATA_DEV_ATA) {
		if (hpt_dma_blacklisted(adev, "UDMA",  bad_ata33))
			mask &= ~ATA_MASK_UDMA;
		if (hpt_dma_blacklisted(adev, "UDMA3", bad_ata66_3))
			mask &= ~(0x07 << ATA_SHIFT_UDMA);
		if (hpt_dma_blacklisted(adev, "UDMA4", bad_ata66_4))
			mask &= ~(0x0F << ATA_SHIFT_UDMA);
	}
	return ata_pci_default_filter(adev, mask);
}

/**
 *	hpt36x_find_mode	-	reset the hpt36x bus
 *	@ap: ATA port
 *	@speed: transfer mode
 *
 *	Return the 32bit register programming information for this channel
 *	that matches the speed provided.
 */

static u32 hpt36x_find_mode(struct ata_port *ap, int speed)
{
	struct hpt_clock *clocks = ap->host->private_data;

	while(clocks->xfer_speed) {
		if (clocks->xfer_speed == speed)
			return clocks->timing;
		clocks++;
	}
	BUG();
	return 0xffffffffU;	/* silence compiler warning */
}

static int hpt36x_cable_detect(struct ata_port *ap)
{
	u8 ata66;
	struct pci_dev *pdev = to_pci_dev(ap->host->dev);

	pci_read_config_byte(pdev, 0x5A, &ata66);
	if (ata66 & (1 << ap->port_no))
		return ATA_CBL_PATA40;
	return ATA_CBL_PATA80;
}

static int hpt36x_pre_reset(struct ata_port *ap, unsigned long deadline)
{
	static const struct pci_bits hpt36x_enable_bits[] = {
		{ 0x50, 1, 0x04, 0x04 },
		{ 0x54, 1, 0x04, 0x04 }
	};
	struct pci_dev *pdev = to_pci_dev(ap->host->dev);

	if (!pci_test_config_bits(pdev, &hpt36x_enable_bits[ap->port_no]))
		return -ENOENT;

	return ata_std_prereset(ap, deadline);
}

/**
 *	hpt36x_error_handler	-	reset the hpt36x bus
 *	@ap: ATA port to reset
 *
 *	Perform the reset handling for the 366/368
 */

static void hpt36x_error_handler(struct ata_port *ap)
{
	ata_bmdma_drive_eh(ap, hpt36x_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
}

/**
 *	hpt366_set_piomode		-	PIO setup
 *	@ap: ATA interface
 *	@adev: device on the interface
 *
 *	Perform PIO mode setup.
 */

static void hpt366_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
	u32 addr1, addr2;
	u32 reg;
	u32 mode;
	u8 fast;

	addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
	addr2 = 0x51 + 4 * ap->port_no;

	/* Fast interrupt prediction disable, hold off interrupt disable */
	pci_read_config_byte(pdev, addr2, &fast);
	if (fast & 0x80) {
		fast &= ~0x80;
		pci_write_config_byte(pdev, addr2, fast);
	}

	pci_read_config_dword(pdev, addr1, &reg);
	mode = hpt36x_find_mode(ap, adev->pio_mode);
	mode &= ~0x8000000;	/* No FIFO in PIO */
	mode &= ~0x30070000;	/* Leave config bits alone */
	reg &= 0x30070000;	/* Strip timing bits */
	pci_write_config_dword(pdev, addr1, reg | mode);
}

/**
 *	hpt366_set_dmamode		-	DMA timing setup
 *	@ap: ATA interface
 *	@adev: Device being configured
 *
 *	Set up the channel for MWDMA or UDMA modes. Much the same as with
 *	PIO, load the mode number and then set MWDMA or UDMA flag.
 */

static void hpt366_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
	u32 addr1, addr2;
	u32 reg;
	u32 mode;
	u8 fast;

	addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
	addr2 = 0x51 + 4 * ap->port_no;

	/* Fast interrupt prediction disable, hold off interrupt disable */
	pci_read_config_byte(pdev, addr2, &fast);
	if (fast & 0x80) {
		fast &= ~0x80;
		pci_write_config_byte(pdev, addr2, fast);
	}

	pci_read_config_dword(pdev, addr1, &reg);
	mode = hpt36x_find_mode(ap, adev->dma_mode);
	mode |= 0x8000000;	/* FIFO in MWDMA or UDMA */
	mode &= ~0xC0000000;	/* Leave config bits alone */
	reg &= 0xC0000000;	/* Strip timing bits */
	pci_write_config_dword(pdev, addr1, reg | mode);
}

static struct scsi_host_template hpt36x_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,
};

/*
 *	Configuration for HPT366/68
 */

static struct ata_port_operations hpt366_port_ops = {
	.port_disable	= ata_port_disable,
	.set_piomode	= hpt366_set_piomode,
	.set_dmamode	= hpt366_set_dmamode,
	.mode_filter	= hpt366_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	= hpt36x_error_handler,
	.post_internal_cmd = ata_bmdma_post_internal_cmd,
	.cable_detect	= hpt36x_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,
	.irq_ack	= ata_irq_ack,

	.port_start	= ata_port_start,
};

/**
 *	hpt36x_init_chipset	-	common chip setup
 *	@dev: PCI device
 *
 *	Perform the chip setup work that must be done at both init and
 *	resume time
 */

static void hpt36x_init_chipset(struct pci_dev *dev)
{
	u8 drive_fast;
	pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));
	pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78);
	pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
	pci_write_config_byte(dev, PCI_MAX_LAT, 0x08);

	pci_read_config_byte(dev, 0x51, &drive_fast);
	if (drive_fast & 0x80)
		pci_write_config_byte(dev, 0x51, drive_fast & ~0x80);
}

/**
 *	hpt36x_init_one		-	Initialise an HPT366/368
 *	@dev: PCI device
 *	@id: Entry in match table
 *
 *	Initialise an HPT36x device. There are some interesting complications
 *	here. Firstly the chip may report 366 and be one of several variants.
 *	Secondly all the timings depend on the clock for the chip which we must
 *	detect and look up
 *
 *	This is the known chip mappings. It may be missing a couple of later
 *	releases.
 *
 *	Chip version		PCI		Rev	Notes
 *	HPT366			4 (HPT366)	0	UDMA66
 *	HPT366			4 (HPT366)	1	UDMA66
 *	HPT368			4 (HPT366)	2	UDMA66
 *	HPT37x/30x		4 (HPT366)	3+	Other driver
 *
 */

static int hpt36x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
	static struct ata_port_info info_hpt366 = {
		.sht = &hpt36x_sht,
		.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
		.pio_mask = 0x1f,
		.mwdma_mask = 0x07,
		.udma_mask = 0x1f,
		.port_ops = &hpt366_port_ops
	};
	struct ata_port_info *port_info[2] = {&info_hpt366, &info_hpt366};

	u32 class_rev;
	u32 reg1;

	pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
	class_rev &= 0xFF;

	/* May be a later chip in disguise. Check */
	/* Newer chips are not in the HPT36x driver. Ignore them */
	if (class_rev > 2)
			return -ENODEV;

	hpt36x_init_chipset(dev);

	pci_read_config_dword(dev, 0x40,  &reg1);

	/* PCI clocking determines the ATA timing values to use */
	/* info_hpt366 is safe against re-entry so we can scribble on it */
	switch((reg1 & 0x700) >> 8) {
		case 5:
			info_hpt366.private_data = &hpt366_40;
			break;
		case 9:
			info_hpt366.private_data = &hpt366_25;
			break;
		default:
			info_hpt366.private_data = &hpt366_33;
			break;
	}
	/* Now kick off ATA set up */
	return ata_pci_init_one(dev, port_info, 2);
}

#ifdef CONFIG_PM
static int hpt36x_reinit_one(struct pci_dev *dev)
{
	hpt36x_init_chipset(dev);
	return ata_pci_device_resume(dev);
}
#endif

static const struct pci_device_id hpt36x[] = {
	{ PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), },
	{ },
};

static struct pci_driver hpt36x_pci_driver = {
	.name 		= DRV_NAME,
	.id_table	= hpt36x,
	.probe 		= hpt36x_init_one,
	.remove		= ata_pci_remove_one,
#ifdef CONFIG_PM
	.suspend	= ata_pci_device_suspend,
	.resume		= hpt36x_reinit_one,
#endif
};

static int __init hpt36x_init(void)
{
	return pci_register_driver(&hpt36x_pci_driver);
}

static void __exit hpt36x_exit(void)
{
	pci_unregister_driver(&hpt36x_pci_driver);
}

MODULE_AUTHOR("Alan Cox");
MODULE_DESCRIPTION("low-level driver for the Highpoint HPT366/368");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, hpt36x);
MODULE_VERSION(DRV_VERSION);

module_init(hpt36x_init);
module_exit(hpt36x_exit);
Commit	Line	Data
669a5db4 JG	1	/*
	2	* Libata driver for the highpoint 366 and 368 UDMA66 ATA controllers.
	3	*
	4	* This driver is heavily based upon:
	5	*
	6	* linux/drivers/ide/pci/hpt366.c Version 0.36 April 25, 2003
	7	*
	8	* Copyright (C) 1999-2003 Andre Hedrick <andre@linux-ide.org>
	9	* Portions Copyright (C) 2001 Sun Microsystems, Inc.
	10	* Portions Copyright (C) 2003 Red Hat Inc
	11	*
	12	*
	13	* TODO
	14	* Maybe PLL mode
	15	* Look into engine reset on timeout errors. Should not be
	16	* required.
	17	*/
	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 <scsi/scsi_host.h>
	27	#include <linux/libata.h>
	28
	29	#define DRV_NAME "pata_hpt366"
fecfda5d	30	#define DRV_VERSION "0.6.1"
669a5db4 JG	31
	32	struct hpt_clock {
	33	u8 xfer_speed;
	34	u32 timing;
	35	};
	36
	37	/* key for bus clock timings
	38	* bit
	39	* 0:3 data_high_time. inactive time of DIOW_/DIOR_ for PIO and MW
	40	* DMA. cycles = value + 1
	41	* 4:8 data_low_time. active time of DIOW_/DIOR_ for PIO and MW
	42	* DMA. cycles = value + 1
	43	* 9:12 cmd_high_time. inactive time of DIOW_/DIOR_ during task file
	44	* register access.
	45	* 13:17 cmd_low_time. active time of DIOW_/DIOR_ during task file
	46	* register access.
	47	* 18:21 udma_cycle_time. clock freq and clock cycles for UDMA xfer.
	48	* during task file register access.
	49	* 22:24 pre_high_time. time to initialize 1st cycle for PIO and MW DMA
	50	* xfer.
	51	* 25:27 cmd_pre_high_time. time to initialize 1st PIO cycle for task
	52	* register access.
	53	* 28 UDMA enable
	54	* 29 DMA enable
	55	* 30 PIO_MST enable. if set, the chip is in bus master mode during
	56	* PIO.
	57	* 31 FIFO enable.
	58	*/
	59
	60	static const struct hpt_clock hpt366_40[] = {
	61	{ XFER_UDMA_4, 0x900fd943 },
	62	{ XFER_UDMA_3, 0x900ad943 },
	63	{ XFER_UDMA_2, 0x900bd943 },
	64	{ XFER_UDMA_1, 0x9008d943 },
	65	{ XFER_UDMA_0, 0x9008d943 },
	66
	67	{ XFER_MW_DMA_2, 0xa008d943 },
	68	{ XFER_MW_DMA_1, 0xa010d955 },
	69	{ XFER_MW_DMA_0, 0xa010d9fc },
	70
	71	{ XFER_PIO_4, 0xc008d963 },
	72	{ XFER_PIO_3, 0xc010d974 },
	73	{ XFER_PIO_2, 0xc010d997 },
	74	{ XFER_PIO_1, 0xc010d9c7 },
	75	{ XFER_PIO_0, 0xc018d9d9 },
	76	{ 0, 0x0120d9d9 }
	77	};
	78
	79	static const struct hpt_clock hpt366_33[] = {
	80	{ XFER_UDMA_4, 0x90c9a731 },
	81	{ XFER_UDMA_3, 0x90cfa731 },
	82	{ XFER_UDMA_2, 0x90caa731 },
	83	{ XFER_UDMA_1, 0x90cba731 },
	84	{ XFER_UDMA_0, 0x90c8a731 },
	85
	86	{ XFER_MW_DMA_2, 0xa0c8a731 },
	87	{ XFER_MW_DMA_1, 0xa0c8a732 }, /* 0xa0c8a733 */
	88	{ XFER_MW_DMA_0, 0xa0c8a797 },
	89
	90	{ XFER_PIO_4, 0xc0c8a731 },
	91	{ XFER_PIO_3, 0xc0c8a742 },
	92	{ XFER_PIO_2, 0xc0d0a753 },
	93	{ XFER_PIO_1, 0xc0d0a7a3 }, /* 0xc0d0a793 */
	94	{ XFER_PIO_0, 0xc0d0a7aa }, /* 0xc0d0a7a7 */
95	{ 0, 0x0120a7a7 }
96	};
97
98	static const struct hpt_clock hpt366_25[] = {
99	{ XFER_UDMA_4, 0x90c98521 },
100	{ XFER_UDMA_3, 0x90cf8521 },
101	{ XFER_UDMA_2, 0x90cf8521 },
102	{ XFER_UDMA_1, 0x90cb8521 },
103	{ XFER_UDMA_0, 0x90cb8521 },
104
105	{ XFER_MW_DMA_2, 0xa0ca8521 },
106	{ XFER_MW_DMA_1, 0xa0ca8532 },
107	{ XFER_MW_DMA_0, 0xa0ca8575 },
108
109	{ XFER_PIO_4, 0xc0ca8521 },
110	{ XFER_PIO_3, 0xc0ca8532 },
111	{ XFER_PIO_2, 0xc0ca8542 },
112	{ XFER_PIO_1, 0xc0d08572 },
113	{ XFER_PIO_0, 0xc0d08585 },
114	{ 0, 0x01208585 }
115	};
116
117	static const char *bad_ata33[] = {
118	"Maxtor 92720U8", "Maxtor 92040U6", "Maxtor 91360U4", "Maxtor 91020U3", "Maxtor 90845U3", "Maxtor 90650U2",
119	"Maxtor 91360D8", "Maxtor 91190D7", "Maxtor 91020D6", "Maxtor 90845D5", "Maxtor 90680D4", "Maxtor 90510D3", "Maxtor 90340D2",
120	"Maxtor 91152D8", "Maxtor 91008D7", "Maxtor 90845D6", "Maxtor 90840D6", "Maxtor 90720D5", "Maxtor 90648D5", "Maxtor 90576D4",
121	"Maxtor 90510D4",
122	"Maxtor 90432D3", "Maxtor 90288D2", "Maxtor 90256D2",
123	"Maxtor 91000D8", "Maxtor 90910D8", "Maxtor 90875D7", "Maxtor 90840D7", "Maxtor 90750D6", "Maxtor 90625D5", "Maxtor 90500D4",
124	"Maxtor 91728D8", "Maxtor 91512D7", "Maxtor 91303D6", "Maxtor 91080D5", "Maxtor 90845D4", "Maxtor 90680D4", "Maxtor 90648D3", "Maxtor 90432D2",
125	NULL
126	};
127
128	static const char *bad_ata66_4[] = {
129	"IBM-DTLA-307075",
130	"IBM-DTLA-307060",
131	"IBM-DTLA-307045",
132	"IBM-DTLA-307030",
133	"IBM-DTLA-307020",
134	"IBM-DTLA-307015",
135	"IBM-DTLA-305040",
136	"IBM-DTLA-305030",
137	"IBM-DTLA-305020",
138	"IC35L010AVER07-0",
139	"IC35L020AVER07-0",
140	"IC35L030AVER07-0",
141	"IC35L040AVER07-0",
142	"IC35L060AVER07-0",
143	"WDC AC310200R",
144	NULL
145	};
146
147	static const char *bad_ata66_3[] = {
148	"WDC AC310200R",
149	NULL
150	};
151
152	static int hpt_dma_blacklisted(const struct ata_device dev, char modestr, const char *list[])
153	{
8bfa79fc	154	unsigned char model_num[ATA_ID_PROD_LEN + 1];
669a5db4 JG	155	int i = 0;
669a5db4 JG	156
8bfa79fc	157	ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
669a5db4	158
8bfa79fc TH	159	while (list[i] != NULL) {
8bfa79fc TH	160	if (!strcmp(list[i], model_num)) {
85cd7251	161	printk(KERN_WARNING DRV_NAME ": %s is not supported for %s.\n",
669a5db4 JG	162	modestr, list[i]);
	163	return 1;
	164	}
	165	i++;
	166	}
	167	return 0;
	168	}
	169
	170	/**
	171	* hpt366_filter - mode selection filter
669a5db4 JG	172	* @adev: ATA device
	173	*
	174	* Block UDMA on devices that cause trouble with this controller.
	175	*/
85cd7251	176
a76b62ca	177	static unsigned long hpt366_filter(struct ata_device *adev, unsigned long mask)
669a5db4 JG	178	{
	179	if (adev->class == ATA_DEV_ATA) {
	180	if (hpt_dma_blacklisted(adev, "UDMA", bad_ata33))
	181	mask &= ~ATA_MASK_UDMA;
	182	if (hpt_dma_blacklisted(adev, "UDMA3", bad_ata66_3))
	183	mask &= ~(0x07 << ATA_SHIFT_UDMA);
	184	if (hpt_dma_blacklisted(adev, "UDMA4", bad_ata66_4))
	185	mask &= ~(0x0F << ATA_SHIFT_UDMA);
	186	}
a76b62ca	187	return ata_pci_default_filter(adev, mask);
669a5db4 JG	188	}
	189
	190	/**
	191	* hpt36x_find_mode - reset the hpt36x bus
	192	* @ap: ATA port
	193	* @speed: transfer mode
	194	*
	195	* Return the 32bit register programming information for this channel
	196	* that matches the speed provided.
	197	*/
85cd7251	198
669a5db4 JG	199	static u32 hpt36x_find_mode(struct ata_port *ap, int speed)
	200	{
	201	struct hpt_clock *clocks = ap->host->private_data;
85cd7251	202
669a5db4 JG	203	while(clocks->xfer_speed) {
	204	if (clocks->xfer_speed == speed)
	205	return clocks->timing;
	206	clocks++;
	207	}
	208	BUG();
	209	return 0xffffffffU; /* silence compiler warning */
	210	}
85cd7251	211
fecfda5d AC	212	static int hpt36x_cable_detect(struct ata_port *ap)
	213	{
	214	u8 ata66;
	215	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
	216
	217	pci_read_config_byte(pdev, 0x5A, &ata66);
	218	if (ata66 & (1 << ap->port_no))
	219	return ATA_CBL_PATA40;
	220	return ATA_CBL_PATA80;
	221	}
	222
d4b2bab4	223	static int hpt36x_pre_reset(struct ata_port *ap, unsigned long deadline)
669a5db4	224	{
54083f11 A	225	static const struct pci_bits hpt36x_enable_bits[] = {
	226	{ 0x50, 1, 0x04, 0x04 },
	227	{ 0x54, 1, 0x04, 0x04 }
	228	};
669a5db4	229	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
85cd7251	230
54083f11 A	231	if (!pci_test_config_bits(pdev, &hpt36x_enable_bits[ap->port_no]))
54083f11 A	232	return -ENOENT;
f20b16ff	233
d4b2bab4	234	return ata_std_prereset(ap, deadline);
669a5db4 JG	235	}
	236
	237	/**
	238	* hpt36x_error_handler - reset the hpt36x bus
	239	* @ap: ATA port to reset
	240	*
	241	* Perform the reset handling for the 366/368
	242	*/
85cd7251	243
669a5db4 JG	244	static void hpt36x_error_handler(struct ata_port *ap)
	245	{
	246	ata_bmdma_drive_eh(ap, hpt36x_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
	247	}
	248
	249	/**
	250	* hpt366_set_piomode - PIO setup
	251	* @ap: ATA interface
	252	* @adev: device on the interface
	253	*
85cd7251	254	* Perform PIO mode setup.
669a5db4	255	*/
85cd7251	256
669a5db4 JG	257	static void hpt366_set_piomode(struct ata_port ap, struct ata_device adev)
	258	{
	259	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
	260	u32 addr1, addr2;
	261	u32 reg;
	262	u32 mode;
	263	u8 fast;
	264
	265	addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
	266	addr2 = 0x51 + 4 * ap->port_no;
85cd7251	267
669a5db4 JG	268	/* Fast interrupt prediction disable, hold off interrupt disable */
	269	pci_read_config_byte(pdev, addr2, &fast);
	270	if (fast & 0x80) {
	271	fast &= ~0x80;
	272	pci_write_config_byte(pdev, addr2, fast);
	273	}
85cd7251	274
669a5db4 JG	275	pci_read_config_dword(pdev, addr1, &reg);
	276	mode = hpt36x_find_mode(ap, adev->pio_mode);
	277	mode &= ~0x8000000; /* No FIFO in PIO */
	278	mode &= ~0x30070000; /* Leave config bits alone */
	279	reg &= 0x30070000; /* Strip timing bits */
	280	pci_write_config_dword(pdev, addr1, reg \| mode);
	281	}
	282
	283	/**
	284	* hpt366_set_dmamode - DMA timing setup
	285	* @ap: ATA interface
	286	* @adev: Device being configured
	287	*
	288	* Set up the channel for MWDMA or UDMA modes. Much the same as with
	289	* PIO, load the mode number and then set MWDMA or UDMA flag.
	290	*/
85cd7251	291
669a5db4 JG	292	static void hpt366_set_dmamode(struct ata_port ap, struct ata_device adev)
	293	{
	294	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
	295	u32 addr1, addr2;
	296	u32 reg;
	297	u32 mode;
	298	u8 fast;
	299
	300	addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
	301	addr2 = 0x51 + 4 * ap->port_no;
85cd7251	302
669a5db4 JG	303	/* Fast interrupt prediction disable, hold off interrupt disable */
	304	pci_read_config_byte(pdev, addr2, &fast);
	305	if (fast & 0x80) {
	306	fast &= ~0x80;
	307	pci_write_config_byte(pdev, addr2, fast);
	308	}
85cd7251	309
669a5db4 JG	310	pci_read_config_dword(pdev, addr1, &reg);
	311	mode = hpt36x_find_mode(ap, adev->dma_mode);
	312	mode \|= 0x8000000; /* FIFO in MWDMA or UDMA */
	313	mode &= ~0xC0000000; /* Leave config bits alone */
	314	reg &= 0xC0000000; /* Strip timing bits */
	315	pci_write_config_dword(pdev, addr1, reg \| mode);
	316	}
	317
	318	static struct scsi_host_template hpt36x_sht = {
	319	.module = THIS_MODULE,
	320	.name = DRV_NAME,
	321	.ioctl = ata_scsi_ioctl,
	322	.queuecommand = ata_scsi_queuecmd,
	323	.can_queue = ATA_DEF_QUEUE,
	324	.this_id = ATA_SHT_THIS_ID,
	325	.sg_tablesize = LIBATA_MAX_PRD,
669a5db4 JG	326	.cmd_per_lun = ATA_SHT_CMD_PER_LUN,
	327	.emulated = ATA_SHT_EMULATED,
	328	.use_clustering = ATA_SHT_USE_CLUSTERING,
	329	.proc_name = DRV_NAME,
	330	.dma_boundary = ATA_DMA_BOUNDARY,
	331	.slave_configure = ata_scsi_slave_config,
afdfe899	332	.slave_destroy = ata_scsi_slave_destroy,
669a5db4 JG	333	.bios_param = ata_std_bios_param,
	334	};
	335
	336	/*
	337	* Configuration for HPT366/68
	338	*/
85cd7251	339
669a5db4 JG	340	static struct ata_port_operations hpt366_port_ops = {
	341	.port_disable = ata_port_disable,
	342	.set_piomode = hpt366_set_piomode,
	343	.set_dmamode = hpt366_set_dmamode,
	344	.mode_filter = hpt366_filter,
85cd7251	345
669a5db4 JG	346	.tf_load = ata_tf_load,
	347	.tf_read = ata_tf_read,
	348	.check_status = ata_check_status,
	349	.exec_command = ata_exec_command,
	350	.dev_select = ata_std_dev_select,
	351
	352	.freeze = ata_bmdma_freeze,
	353	.thaw = ata_bmdma_thaw,
	354	.error_handler = hpt36x_error_handler,
	355	.post_internal_cmd = ata_bmdma_post_internal_cmd,
fecfda5d	356	.cable_detect = hpt36x_cable_detect,
669a5db4 JG	357
	358	.bmdma_setup = ata_bmdma_setup,
	359	.bmdma_start = ata_bmdma_start,
	360	.bmdma_stop = ata_bmdma_stop,
	361	.bmdma_status = ata_bmdma_status,
	362
	363	.qc_prep = ata_qc_prep,
	364	.qc_issue = ata_qc_issue_prot,
bda30288	365
0d5ff566	366	.data_xfer = ata_data_xfer,
669a5db4 JG	367
	368	.irq_handler = ata_interrupt,
	369	.irq_clear = ata_bmdma_irq_clear,
246ce3b6 AI	370	.irq_on = ata_irq_on,
246ce3b6 AI	371	.irq_ack = ata_irq_ack,
669a5db4 JG	372
669a5db4 JG	373	.port_start = ata_port_start,
85cd7251	374	};
669a5db4	375
aa54ab1e A	376	/**
	377	* hpt36x_init_chipset - common chip setup
	378	* @dev: PCI device
	379	*
	380	* Perform the chip setup work that must be done at both init and
	381	* resume time
	382	*/
	383
	384	static void hpt36x_init_chipset(struct pci_dev *dev)
	385	{
	386	u8 drive_fast;
	387	pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));
	388	pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78);
	389	pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
	390	pci_write_config_byte(dev, PCI_MAX_LAT, 0x08);
	391
	392	pci_read_config_byte(dev, 0x51, &drive_fast);
	393	if (drive_fast & 0x80)
	394	pci_write_config_byte(dev, 0x51, drive_fast & ~0x80);
	395	}
	396
669a5db4 JG	397	/**
	398	* hpt36x_init_one - Initialise an HPT366/368
	399	* @dev: PCI device
	400	* @id: Entry in match table
	401	*
	402	* Initialise an HPT36x device. There are some interesting complications
	403	* here. Firstly the chip may report 366 and be one of several variants.
	404	* Secondly all the timings depend on the clock for the chip which we must
	405	* detect and look up
	406	*
	407	* This is the known chip mappings. It may be missing a couple of later
	408	* releases.
	409	*
	410	* Chip version PCI Rev Notes
	411	* HPT366 4 (HPT366) 0 UDMA66
	412	* HPT366 4 (HPT366) 1 UDMA66
	413	* HPT368 4 (HPT366) 2 UDMA66
	414	* HPT37x/30x 4 (HPT366) 3+ Other driver
	415	*
	416	*/
85cd7251	417
669a5db4 JG	418	static int hpt36x_init_one(struct pci_dev dev, const struct pci_device_id id)
	419	{
	420	static struct ata_port_info info_hpt366 = {
	421	.sht = &hpt36x_sht,
	422	.flags = ATA_FLAG_SLAVE_POSS \| ATA_FLAG_SRST,
	423	.pio_mask = 0x1f,
	424	.mwdma_mask = 0x07,
	425	.udma_mask = 0x1f,
	426	.port_ops = &hpt366_port_ops
	427	};
	428	struct ata_port_info *port_info[2] = {&info_hpt366, &info_hpt366};
	429
	430	u32 class_rev;
	431	u32 reg1;
669a5db4 JG	432
	433	pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
	434	class_rev &= 0xFF;
85cd7251	435
669a5db4 JG	436	/* May be a later chip in disguise. Check */
	437	/* Newer chips are not in the HPT36x driver. Ignore them */
	438	if (class_rev > 2)
	439	return -ENODEV;
	440
aa54ab1e	441	hpt36x_init_chipset(dev);
669a5db4 JG	442
669a5db4 JG	443	pci_read_config_dword(dev, 0x40, &reg1);
85cd7251	444
669a5db4 JG	445	/* PCI clocking determines the ATA timing values to use */
669a5db4 JG	446	/* info_hpt366 is safe against re-entry so we can scribble on it */
2c136efc	447	switch((reg1 & 0x700) >> 8) {
669a5db4 JG	448	case 5:
	449	info_hpt366.private_data = &hpt366_40;
	450	break;
	451	case 9:
	452	info_hpt366.private_data = &hpt366_25;
	453	break;
	454	default:
	455	info_hpt366.private_data = &hpt366_33;
	456	break;
	457	}
	458	/* Now kick off ATA set up */
	459	return ata_pci_init_one(dev, port_info, 2);
	460	}
	461
438ac6d5	462	#ifdef CONFIG_PM
aa54ab1e A	463	static int hpt36x_reinit_one(struct pci_dev *dev)
	464	{
	465	hpt36x_init_chipset(dev);
	466	return ata_pci_device_resume(dev);
	467	}
438ac6d5	468	#endif
aa54ab1e	469
2d2744fc JG	470	static const struct pci_device_id hpt36x[] = {
2d2744fc JG	471	{ PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), },
2d2744fc	472	{ },
669a5db4 JG	473	};
	474
	475	static struct pci_driver hpt36x_pci_driver = {
2d2744fc	476	.name = DRV_NAME,
669a5db4 JG	477	.id_table = hpt36x,
669a5db4 JG	478	.probe = hpt36x_init_one,
aa54ab1e	479	.remove = ata_pci_remove_one,
438ac6d5	480	#ifdef CONFIG_PM
aa54ab1e A	481	.suspend = ata_pci_device_suspend,
aa54ab1e A	482	.resume = hpt36x_reinit_one,
438ac6d5	483	#endif
669a5db4 JG	484	};
	485
	486	static int __init hpt36x_init(void)
	487	{
	488	return pci_register_driver(&hpt36x_pci_driver);
	489	}
	490
669a5db4 JG	491	static void __exit hpt36x_exit(void)
	492	{
	493	pci_unregister_driver(&hpt36x_pci_driver);
	494	}
	495
669a5db4 JG	496	MODULE_AUTHOR("Alan Cox");
	497	MODULE_DESCRIPTION("low-level driver for the Highpoint HPT366/368");
	498	MODULE_LICENSE("GPL");
	499	MODULE_DEVICE_TABLE(pci, hpt36x);
	500	MODULE_VERSION(DRV_VERSION);
	501
	502	module_init(hpt36x_init);
	503	module_exit(hpt36x_exit);