[linux-block.git] / drivers / ata / pata_hpt366.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * 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
 *	Look into engine reset on timeout errors. Should not be required.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.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	"0.6.11"

struct hpt_clock {
	u8	xfer_mode;
	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
 * 4:7    data_low_time. Active time of DIOW_/DIOR_ for PIO and MW DMA.
 *        cycles = value + 1
 * 8:11   cmd_high_time. Inactive time of DIOW_/DIOR_ during task file
 *        register access.
 * 12:15  cmd_low_time. Active time of DIOW_/DIOR_ during task file
 *        register access.
 * 16:18  udma_cycle_time. Clock cycles for UDMA xfer?
 * 19:21  pre_high_time. Time to initialize 1st cycle for PIO and MW DMA xfer.
 * 22:24  cmd_pre_high_time. Time to initialize 1st PIO cycle for task file
 *        register access.
 * 28     UDMA enable.
 * 29     DMA  enable.
 * 30     PIO_MST enable. If set, the chip is in bus master mode during
 *        PIO xfer.
 * 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	}
};

/**
 *	hpt36x_find_mode	-	find the hpt36x timing
 *	@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_mode) {
		if (clocks->xfer_mode == speed)
			return clocks->timing;
		clocks++;
	}
	BUG();
	return 0xffffffffU;	/* silence compiler warning */
}

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

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

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

	i = match_string(list, -1, model_num);
	if (i >= 0) {
		pr_warn("%s is not supported for %s\n", modestr, list[i]);
		return 1;
	}
	return 0;
}

/**
 *	hpt366_filter	-	mode selection filter
 *	@adev: ATA device
 *	@mask: Current mask to manipulate and pass back
 *
 *	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 &= ~(0xF8 << ATA_SHIFT_UDMA);
		if (hpt_dma_blacklisted(adev, "UDMA4", bad_ata66_4))
			mask &= ~(0xF0 << ATA_SHIFT_UDMA);
	} else if (adev->class == ATA_DEV_ATAPI)
		mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA);

	return mask;
}

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

	/*
	 * Each channel of pata_hpt366 occupies separate PCI function
	 * as the primary channel and bit1 indicates the cable type.
	 */
	pci_read_config_byte(pdev, 0x5A, &ata66);
	if (ata66 & 2)
		return ATA_CBL_PATA40;
	return ATA_CBL_PATA80;
}

static void hpt366_set_mode(struct ata_port *ap, struct ata_device *adev,
			    u8 mode)
{
	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
	u32 addr = 0x40 + 4 * adev->devno;
	u32 mask, reg, t;

	/* determine timing mask and find matching clock entry */
	if (mode < XFER_MW_DMA_0)
		mask = 0xc1f8ffff;
	else if (mode < XFER_UDMA_0)
		mask = 0x303800ff;
	else
		mask = 0x30070000;

	t = hpt36x_find_mode(ap, mode);

	/*
	 * Combine new mode bits with old config bits and disable
	 * on-chip PIO FIFO/buffer (and PIO MST mode as well) to avoid
	 * problems handling I/O errors later.
	 */
	pci_read_config_dword(pdev, addr, &reg);
	reg = ((reg & ~mask) | (t & mask)) & ~0xc0000000;
	pci_write_config_dword(pdev, addr, reg);
}

/**
 *	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)
{
	hpt366_set_mode(ap, adev, adev->pio_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)
{
	hpt366_set_mode(ap, adev, adev->dma_mode);
}

static struct scsi_host_template hpt36x_sht = {
	ATA_BMDMA_SHT(DRV_NAME),
};

/*
 *	Configuration for HPT366/68
 */

static struct ata_port_operations hpt366_port_ops = {
	.inherits	= &ata_bmdma_port_ops,
	.cable_detect	= hpt36x_cable_detect,
	.mode_filter	= hpt366_filter,
	.set_piomode	= hpt366_set_piomode,
	.set_dmamode	= hpt366_set_dmamode,
};

/**
 *	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 const struct ata_port_info info_hpt366 = {
		.flags = ATA_FLAG_SLAVE_POSS,
		.pio_mask = ATA_PIO4,
		.mwdma_mask = ATA_MWDMA2,
		.udma_mask = ATA_UDMA4,
		.port_ops = &hpt366_port_ops
	};
	const struct ata_port_info *ppi[] = { &info_hpt366, NULL };

	const void *hpriv = NULL;
	u32 reg1;
	int rc;

	rc = pcim_enable_device(dev);
	if (rc)
		return rc;

	/* May be a later chip in disguise. Check */
	/* Newer chips are not in the HPT36x driver. Ignore them */
	if (dev->revision > 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 & 0xf00) >> 8) {
	case 9:
		hpriv = &hpt366_40;
		break;
	case 5:
		hpriv = &hpt366_25;
		break;
	default:
		hpriv = &hpt366_33;
		break;
	}
	/* Now kick off ATA set up */
	return ata_pci_bmdma_init_one(dev, ppi, &hpt36x_sht, (void *)hpriv, 0);
}

#ifdef CONFIG_PM_SLEEP
static int hpt36x_reinit_one(struct pci_dev *dev)
{
	struct ata_host *host = pci_get_drvdata(dev);
	int rc;

	rc = ata_pci_device_do_resume(dev);
	if (rc)
		return rc;
	hpt36x_init_chipset(dev);
	ata_host_resume(host);
	return 0;
}
#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_SLEEP
	.suspend	= ata_pci_device_suspend,
	.resume		= hpt36x_reinit_one,
#endif
};

module_pci_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);
Commit	Line	Data
09c434b8	1	// SPDX-License-Identifier: GPL-2.0-only
669a5db4 JG	2	/*
	3	* Libata driver for the highpoint 366 and 368 UDMA66 ATA controllers.
	4	*
	5	* This driver is heavily based upon:
	6	*
	7	* linux/drivers/ide/pci/hpt366.c Version 0.36 April 25, 2003
	8	*
	9	* Copyright (C) 1999-2003 Andre Hedrick <andre@linux-ide.org>
	10	* Portions Copyright (C) 2001 Sun Microsystems, Inc.
	11	* Portions Copyright (C) 2003 Red Hat Inc
	12	*
	13	*
	14	* TODO
d817898c	15	* Look into engine reset on timeout errors. Should not be required.
669a5db4 JG	16	*/
669a5db4 JG	17
8d7b1c70	18	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
669a5db4 JG	19
	20	#include <linux/kernel.h>
	21	#include <linux/module.h>
	22	#include <linux/pci.h>
669a5db4 JG	23	#include <linux/blkdev.h>
	24	#include <linux/delay.h>
	25	#include <scsi/scsi_host.h>
	26	#include <linux/libata.h>
	27
	28	#define DRV_NAME "pata_hpt366"
8d7b1c70	29	#define DRV_VERSION "0.6.11"
669a5db4 JG	30
669a5db4 JG	31	struct hpt_clock {
6ecb6f25	32	u8 xfer_mode;
669a5db4 JG	33	u32 timing;
	34	};
	35
	36	/* key for bus clock timings
	37	* bit
82beb5d8 SS	38	* 0:3 data_high_time. Inactive time of DIOW_/DIOR_ for PIO and MW DMA.
	39	* cycles = value + 1
	40	* 4:7 data_low_time. Active time of DIOW_/DIOR_ for PIO and MW DMA.
	41	* cycles = value + 1
	42	* 8:11 cmd_high_time. Inactive time of DIOW_/DIOR_ during task file
669a5db4	43	* register access.
82beb5d8	44	* 12:15 cmd_low_time. Active time of DIOW_/DIOR_ during task file
669a5db4	45	* register access.
82beb5d8 SS	46	* 16:18 udma_cycle_time. Clock cycles for UDMA xfer?
	47	* 19:21 pre_high_time. Time to initialize 1st cycle for PIO and MW DMA xfer.
	48	* 22:24 cmd_pre_high_time. Time to initialize 1st PIO cycle for task file
669a5db4	49	* register access.
82beb5d8 SS	50	* 28 UDMA enable.
	51	* 29 DMA enable.
	52	* 30 PIO_MST enable. If set, the chip is in bus master mode during
	53	* PIO xfer.
669a5db4 JG	54	* 31 FIFO enable.
	55	*/
	56
	57	static const struct hpt_clock hpt366_40[] = {
	58	{ XFER_UDMA_4, 0x900fd943 },
	59	{ XFER_UDMA_3, 0x900ad943 },
	60	{ XFER_UDMA_2, 0x900bd943 },
	61	{ XFER_UDMA_1, 0x9008d943 },
	62	{ XFER_UDMA_0, 0x9008d943 },
	63
	64	{ XFER_MW_DMA_2, 0xa008d943 },
	65	{ XFER_MW_DMA_1, 0xa010d955 },
	66	{ XFER_MW_DMA_0, 0xa010d9fc },
	67
	68	{ XFER_PIO_4, 0xc008d963 },
	69	{ XFER_PIO_3, 0xc010d974 },
	70	{ XFER_PIO_2, 0xc010d997 },
	71	{ XFER_PIO_1, 0xc010d9c7 },
	72	{ XFER_PIO_0, 0xc018d9d9 },
	73	{ 0, 0x0120d9d9 }
	74	};
	75
	76	static const struct hpt_clock hpt366_33[] = {
	77	{ XFER_UDMA_4, 0x90c9a731 },
	78	{ XFER_UDMA_3, 0x90cfa731 },
	79	{ XFER_UDMA_2, 0x90caa731 },
	80	{ XFER_UDMA_1, 0x90cba731 },
	81	{ XFER_UDMA_0, 0x90c8a731 },
	82
	83	{ XFER_MW_DMA_2, 0xa0c8a731 },
	84	{ XFER_MW_DMA_1, 0xa0c8a732 }, /* 0xa0c8a733 */
	85	{ XFER_MW_DMA_0, 0xa0c8a797 },
	86
	87	{ XFER_PIO_4, 0xc0c8a731 },
	88	{ XFER_PIO_3, 0xc0c8a742 },
	89	{ XFER_PIO_2, 0xc0d0a753 },
	90	{ XFER_PIO_1, 0xc0d0a7a3 }, /* 0xc0d0a793 */
	91	{ XFER_PIO_0, 0xc0d0a7aa }, /* 0xc0d0a7a7 */
	92	{ 0, 0x0120a7a7 }
	93	};
	94
	95	static const struct hpt_clock hpt366_25[] = {
	96	{ XFER_UDMA_4, 0x90c98521 },
	97	{ XFER_UDMA_3, 0x90cf8521 },
	98	{ XFER_UDMA_2, 0x90cf8521 },
	99	{ XFER_UDMA_1, 0x90cb8521 },
	100	{ XFER_UDMA_0, 0x90cb8521 },
	101
	102	{ XFER_MW_DMA_2, 0xa0ca8521 },
	103	{ XFER_MW_DMA_1, 0xa0ca8532 },
	104	{ XFER_MW_DMA_0, 0xa0ca8575 },
	105
	106	{ XFER_PIO_4, 0xc0ca8521 },
	107	{ XFER_PIO_3, 0xc0ca8532 },
	108	{ XFER_PIO_2, 0xc0ca8542 },
	109	{ XFER_PIO_1, 0xc0d08572 },
	110	{ XFER_PIO_0, 0xc0d08585 },
	111	{ 0, 0x01208585 }
	112	};
	113
dc5e44ec BZ	114	/**
	115	* hpt36x_find_mode - find the hpt36x timing
	116	* @ap: ATA port
	117	* @speed: transfer mode
	118	*
	119	* Return the 32bit register programming information for this channel
	120	* that matches the speed provided.
	121	*/
	122
	123	static u32 hpt36x_find_mode(struct ata_port *ap, int speed)
	124	{
	125	struct hpt_clock *clocks = ap->host->private_data;
	126
	127	while (clocks->xfer_mode) {
	128	if (clocks->xfer_mode == speed)
	129	return clocks->timing;
	130	clocks++;
	131	}
	132	BUG();
	133	return 0xffffffffU; /* silence compiler warning */
	134	}
	135
28cd4b6b SS	136	static const char * const bad_ata33[] = {
	137	"Maxtor 92720U8", "Maxtor 92040U6", "Maxtor 91360U4", "Maxtor 91020U3",
	138	"Maxtor 90845U3", "Maxtor 90650U2",
	139	"Maxtor 91360D8", "Maxtor 91190D7", "Maxtor 91020D6", "Maxtor 90845D5",
	140	"Maxtor 90680D4", "Maxtor 90510D3", "Maxtor 90340D2",
	141	"Maxtor 91152D8", "Maxtor 91008D7", "Maxtor 90845D6", "Maxtor 90840D6",
	142	"Maxtor 90720D5", "Maxtor 90648D5", "Maxtor 90576D4",
669a5db4 JG	143	"Maxtor 90510D4",
669a5db4 JG	144	"Maxtor 90432D3", "Maxtor 90288D2", "Maxtor 90256D2",
28cd4b6b SS	145	"Maxtor 91000D8", "Maxtor 90910D8", "Maxtor 90875D7", "Maxtor 90840D7",
	146	"Maxtor 90750D6", "Maxtor 90625D5", "Maxtor 90500D4",
	147	"Maxtor 91728D8", "Maxtor 91512D7", "Maxtor 91303D6", "Maxtor 91080D5",
	148	"Maxtor 90845D4", "Maxtor 90680D4", "Maxtor 90648D3", "Maxtor 90432D2",
669a5db4 JG	149	NULL
	150	};
	151
28cd4b6b	152	static const char * const bad_ata66_4[] = {
669a5db4 JG	153	"IBM-DTLA-307075",
	154	"IBM-DTLA-307060",
	155	"IBM-DTLA-307045",
	156	"IBM-DTLA-307030",
	157	"IBM-DTLA-307020",
	158	"IBM-DTLA-307015",
	159	"IBM-DTLA-305040",
	160	"IBM-DTLA-305030",
	161	"IBM-DTLA-305020",
	162	"IC35L010AVER07-0",
	163	"IC35L020AVER07-0",
	164	"IC35L030AVER07-0",
	165	"IC35L040AVER07-0",
	166	"IC35L060AVER07-0",
	167	"WDC AC310200R",
	168	NULL
	169	};
	170
28cd4b6b	171	static const char * const bad_ata66_3[] = {
669a5db4 JG	172	"WDC AC310200R",
	173	NULL
	174	};
	175
28cd4b6b SS	176	static int hpt_dma_blacklisted(const struct ata_device dev, char modestr,
28cd4b6b SS	177	const char * const list[])
669a5db4	178	{
8bfa79fc	179	unsigned char model_num[ATA_ID_PROD_LEN + 1];
908913bd	180	int i;
669a5db4	181
8bfa79fc	182	ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
669a5db4	183
908913bd AS	184	i = match_string(list, -1, model_num);
	185	if (i >= 0) {
	186	pr_warn("%s is not supported for %s\n", modestr, list[i]);
	187	return 1;
669a5db4 JG	188	}
	189	return 0;
	190	}
	191
	192	/**
	193	* hpt366_filter - mode selection filter
669a5db4	194	* @adev: ATA device
d6c2aaae	195	* @mask: Current mask to manipulate and pass back
669a5db4 JG	196	*
	197	* Block UDMA on devices that cause trouble with this controller.
	198	*/
85cd7251	199
a76b62ca	200	static unsigned long hpt366_filter(struct ata_device *adev, unsigned long mask)
669a5db4 JG	201	{
	202	if (adev->class == ATA_DEV_ATA) {
	203	if (hpt_dma_blacklisted(adev, "UDMA", bad_ata33))
	204	mask &= ~ATA_MASK_UDMA;
	205	if (hpt_dma_blacklisted(adev, "UDMA3", bad_ata66_3))
6ddd6861	206	mask &= ~(0xF8 << ATA_SHIFT_UDMA);
669a5db4	207	if (hpt_dma_blacklisted(adev, "UDMA4", bad_ata66_4))
6ddd6861	208	mask &= ~(0xF0 << ATA_SHIFT_UDMA);
3ee89f17 TH	209	} else if (adev->class == ATA_DEV_ATAPI)
	210	mask &= ~(ATA_MASK_MWDMA \| ATA_MASK_UDMA);
	211
c7087652	212	return mask;
669a5db4 JG	213	}
669a5db4 JG	214
fecfda5d AC	215	static int hpt36x_cable_detect(struct ata_port *ap)
fecfda5d AC	216	{
fecfda5d	217	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
bab5b32a	218	u8 ata66;
fecfda5d	219
bab5b32a TH	220	/*
	221	* Each channel of pata_hpt366 occupies separate PCI function
	222	* as the primary channel and bit1 indicates the cable type.
	223	*/
fecfda5d	224	pci_read_config_byte(pdev, 0x5A, &ata66);
bab5b32a	225	if (ata66 & 2)
fecfda5d AC	226	return ATA_CBL_PATA40;
	227	return ATA_CBL_PATA80;
	228	}
	229
6ecb6f25 TH	230	static void hpt366_set_mode(struct ata_port ap, struct ata_device adev,
6ecb6f25 TH	231	u8 mode)
669a5db4 JG	232	{
669a5db4 JG	233	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
859faa87	234	u32 addr = 0x40 + 4 * adev->devno;
dc5e44ec	235	u32 mask, reg, t;
85cd7251	236
6ecb6f25 TH	237	/* determine timing mask and find matching clock entry */
	238	if (mode < XFER_MW_DMA_0)
	239	mask = 0xc1f8ffff;
	240	else if (mode < XFER_UDMA_0)
	241	mask = 0x303800ff;
	242	else
	243	mask = 0x30070000;
	244
dc5e44ec	245	t = hpt36x_find_mode(ap, mode);
6ecb6f25 TH	246
	247	/*
	248	* Combine new mode bits with old config bits and disable
	249	* on-chip PIO FIFO/buffer (and PIO MST mode as well) to avoid
	250	* problems handling I/O errors later.
	251	*/
859faa87	252	pci_read_config_dword(pdev, addr, &reg);
dc5e44ec	253	reg = ((reg & ~mask) \| (t & mask)) & ~0xc0000000;
859faa87	254	pci_write_config_dword(pdev, addr, reg);
6ecb6f25 TH	255	}
	256
	257	/**
	258	* hpt366_set_piomode - PIO setup
	259	* @ap: ATA interface
	260	* @adev: device on the interface
	261	*
	262	* Perform PIO mode setup.
	263	*/
	264
	265	static void hpt366_set_piomode(struct ata_port ap, struct ata_device adev)
	266	{
	267	hpt366_set_mode(ap, adev, adev->pio_mode);
669a5db4 JG	268	}
	269
	270	/**
	271	* hpt366_set_dmamode - DMA timing setup
	272	* @ap: ATA interface
	273	* @adev: Device being configured
	274	*
	275	* Set up the channel for MWDMA or UDMA modes. Much the same as with
	276	* PIO, load the mode number and then set MWDMA or UDMA flag.
	277	*/
85cd7251	278
669a5db4 JG	279	static void hpt366_set_dmamode(struct ata_port ap, struct ata_device adev)
669a5db4 JG	280	{
6ecb6f25	281	hpt366_set_mode(ap, adev, adev->dma_mode);
669a5db4 JG	282	}
	283
	284	static struct scsi_host_template hpt36x_sht = {
68d1d07b	285	ATA_BMDMA_SHT(DRV_NAME),
669a5db4 JG	286	};
	287
	288	/*
	289	* Configuration for HPT366/68
	290	*/
85cd7251	291
669a5db4	292	static struct ata_port_operations hpt366_port_ops = {
029cfd6b TH	293	.inherits = &ata_bmdma_port_ops,
	294	.cable_detect = hpt36x_cable_detect,
	295	.mode_filter = hpt366_filter,
669a5db4 JG	296	.set_piomode = hpt366_set_piomode,
669a5db4 JG	297	.set_dmamode = hpt366_set_dmamode,
85cd7251	298	};
669a5db4	299
aa54ab1e A	300	/**
	301	* hpt36x_init_chipset - common chip setup
	302	* @dev: PCI device
	303	*
	304	* Perform the chip setup work that must be done at both init and
	305	* resume time
	306	*/
	307
	308	static void hpt36x_init_chipset(struct pci_dev *dev)
	309	{
	310	u8 drive_fast;
28cd4b6b	311
aa54ab1e A	312	pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));
	313	pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78);
	314	pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
	315	pci_write_config_byte(dev, PCI_MAX_LAT, 0x08);
	316
	317	pci_read_config_byte(dev, 0x51, &drive_fast);
	318	if (drive_fast & 0x80)
	319	pci_write_config_byte(dev, 0x51, drive_fast & ~0x80);
	320	}
	321
669a5db4 JG	322	/**
	323	* hpt36x_init_one - Initialise an HPT366/368
	324	* @dev: PCI device
	325	* @id: Entry in match table
	326	*
	327	* Initialise an HPT36x device. There are some interesting complications
	328	* here. Firstly the chip may report 366 and be one of several variants.
	329	* Secondly all the timings depend on the clock for the chip which we must
	330	* detect and look up
	331	*
	332	* This is the known chip mappings. It may be missing a couple of later
	333	* releases.
	334	*
	335	* Chip version PCI Rev Notes
	336	* HPT366 4 (HPT366) 0 UDMA66
	337	* HPT366 4 (HPT366) 1 UDMA66
	338	* HPT368 4 (HPT366) 2 UDMA66
	339	* HPT37x/30x 4 (HPT366) 3+ Other driver
	340	*
	341	*/
85cd7251	342
669a5db4 JG	343	static int hpt36x_init_one(struct pci_dev dev, const struct pci_device_id id)
669a5db4 JG	344	{
1626aeb8	345	static const struct ata_port_info info_hpt366 = {
1d2808fd	346	.flags = ATA_FLAG_SLAVE_POSS,
14bdef98 EIB	347	.pio_mask = ATA_PIO4,
14bdef98 EIB	348	.mwdma_mask = ATA_MWDMA2,
bf6263a8	349	.udma_mask = ATA_UDMA4,
669a5db4 JG	350	.port_ops = &hpt366_port_ops
669a5db4 JG	351	};
887125e3	352	const struct ata_port_info *ppi[] = { &info_hpt366, NULL };
669a5db4	353
6ec0a86c	354	const void *hpriv = NULL;
669a5db4	355	u32 reg1;
f08048e9 TH	356	int rc;
	357
	358	rc = pcim_enable_device(dev);
	359	if (rc)
	360	return rc;
669a5db4	361
669a5db4 JG	362	/* May be a later chip in disguise. Check */
669a5db4 JG	363	/* Newer chips are not in the HPT36x driver. Ignore them */
89d3b360 SS	364	if (dev->revision > 2)
89d3b360 SS	365	return -ENODEV;
669a5db4	366
aa54ab1e	367	hpt36x_init_chipset(dev);
669a5db4 JG	368
669a5db4 JG	369	pci_read_config_dword(dev, 0x40, &reg1);
85cd7251	370
669a5db4 JG	371	/* PCI clocking determines the ATA timing values to use */
669a5db4 JG	372	/* info_hpt366 is safe against re-entry so we can scribble on it */
a548cc00	373	switch ((reg1 & 0xf00) >> 8) {
28cd4b6b SS	374	case 9:
	375	hpriv = &hpt366_40;
	376	break;
	377	case 5:
	378	hpriv = &hpt366_25;
	379	break;
	380	default:
	381	hpriv = &hpt366_33;
	382	break;
669a5db4 JG	383	}
669a5db4 JG	384	/* Now kick off ATA set up */
6ec0a86c	385	return ata_pci_bmdma_init_one(dev, ppi, &hpt36x_sht, (void *)hpriv, 0);
669a5db4 JG	386	}
669a5db4 JG	387
58eb8cd5	388	#ifdef CONFIG_PM_SLEEP
aa54ab1e A	389	static int hpt36x_reinit_one(struct pci_dev *dev)
aa54ab1e A	390	{
0a86e1c8	391	struct ata_host *host = pci_get_drvdata(dev);
f08048e9 TH	392	int rc;
	393
	394	rc = ata_pci_device_do_resume(dev);
	395	if (rc)
	396	return rc;
aa54ab1e	397	hpt36x_init_chipset(dev);
f08048e9 TH	398	ata_host_resume(host);
f08048e9 TH	399	return 0;
aa54ab1e	400	}
438ac6d5	401	#endif
aa54ab1e	402
2d2744fc JG	403	static const struct pci_device_id hpt36x[] = {
2d2744fc JG	404	{ PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), },
2d2744fc	405	{ },
669a5db4 JG	406	};
	407
	408	static struct pci_driver hpt36x_pci_driver = {
28cd4b6b	409	.name = DRV_NAME,
669a5db4	410	.id_table = hpt36x,
28cd4b6b	411	.probe = hpt36x_init_one,
aa54ab1e	412	.remove = ata_pci_remove_one,
58eb8cd5	413	#ifdef CONFIG_PM_SLEEP
aa54ab1e A	414	.suspend = ata_pci_device_suspend,
aa54ab1e A	415	.resume = hpt36x_reinit_one,
438ac6d5	416	#endif
669a5db4 JG	417	};
669a5db4 JG	418
2fc75da0	419	module_pci_driver(hpt36x_pci_driver);
669a5db4	420
669a5db4 JG	421	MODULE_AUTHOR("Alan Cox");
	422	MODULE_DESCRIPTION("low-level driver for the Highpoint HPT366/368");
	423	MODULE_LICENSE("GPL");
	424	MODULE_DEVICE_TABLE(pci, hpt36x);
	425	MODULE_VERSION(DRV_VERSION);