[mirror_ubuntu-artful-kernel.git] / drivers / ide / pci / jmicron.c


/*
 * Copyright (C) 2006		Red Hat <alan@redhat.com>
 *
 *  May be copied or modified under the terms of the GNU General Public License
 */

#include <linux/types.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/hdreg.h>
#include <linux/ide.h>
#include <linux/init.h>

#include <asm/io.h>

typedef enum {
	PORT_PATA0 = 0,
	PORT_PATA1 = 1,
	PORT_SATA = 2,
} port_type;

/**
 *	ata66_jmicron		-	Cable check
 *	@hwif: IDE port
 *
 *	Return 1 if the cable is 80pin
 */

static int __devinit ata66_jmicron(ide_hwif_t *hwif)
{
	struct pci_dev *pdev = hwif->pci_dev;

	u32 control;
	u32 control5;

	int port = hwif->channel;
	port_type port_map[2];

	pci_read_config_dword(pdev, 0x40, &control);

	/* There are two basic mappings. One has the two SATA ports merged
	   as master/slave and the secondary as PATA, the other has only the
	   SATA port mapped */
	if (control & (1 << 23)) {
		port_map[0] = PORT_SATA;
		port_map[1] = PORT_PATA0;
	} else {
		port_map[0] = PORT_SATA;
		port_map[1] = PORT_SATA;
	}

	/* The 365/366 may have this bit set to map the second PATA port
	   as the internal primary channel */
	pci_read_config_dword(pdev, 0x80, &control5);
	if (control5 & (1<<24))
		port_map[0] = PORT_PATA1;

	/* The two ports may then be logically swapped by the firmware */
	if (control & (1 << 22))
		port = port ^ 1;

	/*
	 *	Now we know which physical port we are talking about we can
	 *	actually do our cable checking etc. Thankfully we don't need
	 *	to do the plumbing for other cases.
	 */
	switch (port_map[port])
	{
	case PORT_PATA0:
		if (control & (1 << 3))	/* 40/80 pin primary */
			return 0;
		return 1;
	case PORT_PATA1:
		if (control5 & (1 << 19))	/* 40/80 pin secondary */
			return 0;
		return 1;
	case PORT_SATA:
		break;
	}
	return 1; /* Avoid bogus "control reaches end of non-void function" */
}

static void jmicron_tuneproc (ide_drive_t *drive, byte mode_wanted)
{
	return;
}

/**
 *	config_jmicron_chipset_for_pio	-	set drive timings
 *	@drive: drive to tune
 *	@speed we want
 *
 */

static void config_jmicron_chipset_for_pio (ide_drive_t *drive, byte set_speed)
{
	u8 speed = XFER_PIO_0 + ide_get_best_pio_mode(drive, 255, 5, NULL);
	if (set_speed)
		(void) ide_config_drive_speed(drive, speed);
}

/**
 *	jmicron_tune_chipset	-	set controller timings
 *	@drive: Drive to set up
 *	@xferspeed: speed we want to achieve
 *
 *	As the JMicron snoops for timings all we actually need to do is
 *	make sure we don't set an invalid mode. We do need to honour
 *	the cable detect here.
 */

static int jmicron_tune_chipset (ide_drive_t *drive, byte xferspeed)
{
	u8 speed = ide_rate_filter(drive, xferspeed);

	return ide_config_drive_speed(drive, speed);
}

/**
 *	config_chipset_for_dma	-	configure for DMA
 *	@drive: drive to configure
 *
 *	As the JMicron snoops for timings all we actually need to do is
 *	make sure we don't set an invalid mode.
 */

static int config_chipset_for_dma (ide_drive_t *drive)
{
	u8 speed = ide_max_dma_mode(drive);

	if (!speed)
		return 0;

	jmicron_tune_chipset(drive, speed);
	return ide_dma_enable(drive);
}

/**
 *	jmicron_configure_drive_for_dma	-	set up for DMA transfers
 *	@drive: drive we are going to set up
 *
 *	As the JMicron snoops for timings all we actually need to do is
 *	make sure we don't set an invalid mode.
 */

static int jmicron_config_drive_for_dma (ide_drive_t *drive)
{
	if (ide_use_dma(drive) && config_chipset_for_dma(drive))
		return 0;

	config_jmicron_chipset_for_pio(drive, 1);

	return -1;
}

/**
 *	init_hwif_jmicron	-	set up hwif structs
 *	@hwif: interface to set up
 *
 *	Minimal set up is required for the Jmicron hardware.
 */

static void __devinit init_hwif_jmicron(ide_hwif_t *hwif)
{
	hwif->speedproc = &jmicron_tune_chipset;
	hwif->tuneproc	= &jmicron_tuneproc;

	hwif->drives[0].autotune = 1;
	hwif->drives[1].autotune = 1;

	if (!hwif->dma_base)
		goto fallback;

	hwif->atapi_dma = 1;
	hwif->ultra_mask = 0x7f;
	hwif->mwdma_mask = 0x07;

	hwif->ide_dma_check = &jmicron_config_drive_for_dma;
	if (!(hwif->udma_four))
		hwif->udma_four = ata66_jmicron(hwif);

	hwif->autodma = 1;
	hwif->drives[0].autodma = hwif->autodma;
	hwif->drives[1].autodma = hwif->autodma;
	return;
fallback:
	hwif->autodma = 0;
	return;
}

#define DECLARE_JMB_DEV(name_str)			\
	{						\
		.name		= name_str,		\
		.init_hwif	= init_hwif_jmicron,	\
		.channels	= 2,			\
		.autodma	= AUTODMA,		\
		.bootable	= ON_BOARD,		\
		.enablebits	= { {0x40, 1, 1}, {0x40, 0x10, 0x10} }, \
	}

static ide_pci_device_t jmicron_chipsets[] __devinitdata = {
	/* 0 */ DECLARE_JMB_DEV("JMB361"),
	/* 1 */ DECLARE_JMB_DEV("JMB363"),
	/* 2 */ DECLARE_JMB_DEV("JMB365"),
	/* 3 */ DECLARE_JMB_DEV("JMB366"),
	/* 4 */ DECLARE_JMB_DEV("JMB368"),
};

/**
 *	jmicron_init_one	-	pci layer discovery entry
 *	@dev: PCI device
 *	@id: ident table entry
 *
 *	Called by the PCI code when it finds a Jmicron controller.
 *	We then use the IDE PCI generic helper to do most of the work.
 */

static int __devinit jmicron_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
	ide_setup_pci_device(dev, &jmicron_chipsets[id->driver_data]);
	return 0;
}

/* If libata is configured, jmicron PCI quirk will configure it such
 * that the SATA ports are in AHCI function while the PATA ports are
 * in a separate IDE function.  In such cases, match device class and
 * attach only to IDE.  If libata isn't configured, keep the old
 * behavior for backward compatibility.
 */
#if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE)
#define JMB_CLASS	PCI_CLASS_STORAGE_IDE << 8
#define JMB_CLASS_MASK	0xffff00
#else
#define JMB_CLASS	0
#define JMB_CLASS_MASK	0
#endif

static struct pci_device_id jmicron_pci_tbl[] = {
	{ PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361,
	  PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 0},
	{ PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363,
	  PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 1},
	{ PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365,
	  PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 2},
	{ PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366,
	  PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 3},
	{ PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368,
	  PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 4},
	{ 0, },
};

MODULE_DEVICE_TABLE(pci, jmicron_pci_tbl);

static struct pci_driver driver = {
	.name		= "JMicron IDE",
	.id_table	= jmicron_pci_tbl,
	.probe		= jmicron_init_one,
};

static int __init jmicron_ide_init(void)
{
	return ide_pci_register_driver(&driver);
}

module_init(jmicron_ide_init);

MODULE_AUTHOR("Alan Cox");
MODULE_DESCRIPTION("PCI driver module for the JMicron in legacy modes");
MODULE_LICENSE("GPL");
Commit	Line	Data
bbb3bbdb AC	1
	2	/*
	3	* Copyright (C) 2006 Red Hat <alan@redhat.com>
	4	*
	5	* May be copied or modified under the terms of the GNU General Public License
	6	*/
	7
bbb3bbdb AC	8	#include <linux/types.h>
	9	#include <linux/module.h>
	10	#include <linux/pci.h>
	11	#include <linux/delay.h>
	12	#include <linux/hdreg.h>
	13	#include <linux/ide.h>
	14	#include <linux/init.h>
	15
	16	#include <asm/io.h>
	17
	18	typedef enum {
	19	PORT_PATA0 = 0,
	20	PORT_PATA1 = 1,
	21	PORT_SATA = 2,
	22	} port_type;
	23
bbb3bbdb AC	24	/**
	25	* ata66_jmicron - Cable check
	26	* @hwif: IDE port
	27	*
	28	* Return 1 if the cable is 80pin
	29	*/
	30
	31	static int __devinit ata66_jmicron(ide_hwif_t *hwif)
	32	{
	33	struct pci_dev *pdev = hwif->pci_dev;
	34
	35	u32 control;
	36	u32 control5;
	37
	38	int port = hwif->channel;
	39	port_type port_map[2];
	40
	41	pci_read_config_dword(pdev, 0x40, &control);
	42
	43	/* There are two basic mappings. One has the two SATA ports merged
	44	as master/slave and the secondary as PATA, the other has only the
	45	SATA port mapped */
	46	if (control & (1 << 23)) {
	47	port_map[0] = PORT_SATA;
	48	port_map[1] = PORT_PATA0;
	49	} else {
	50	port_map[0] = PORT_SATA;
	51	port_map[1] = PORT_SATA;
	52	}
	53
	54	/* The 365/366 may have this bit set to map the second PATA port
	55	as the internal primary channel */
	56	pci_read_config_dword(pdev, 0x80, &control5);
	57	if (control5 & (1<<24))
	58	port_map[0] = PORT_PATA1;
	59
	60	/* The two ports may then be logically swapped by the firmware */
	61	if (control & (1 << 22))
	62	port = port ^ 1;
	63
	64	/*
	65	* Now we know which physical port we are talking about we can
	66	* actually do our cable checking etc. Thankfully we don't need
	67	* to do the plumbing for other cases.
	68	*/
	69	switch (port_map[port])
	70	{
	71	case PORT_PATA0:
	72	if (control & (1 << 3)) /* 40/80 pin primary */
99abaf51	73	return 0;
99abaf51	74	return 1;
bbb3bbdb AC	75	case PORT_PATA1:
	76	if (control5 & (1 << 19)) /* 40/80 pin secondary */
	77	return 0;
	78	return 1;
	79	case PORT_SATA:
a51545ab	80	break;
bbb3bbdb	81	}
a51545ab	82	return 1; /* Avoid bogus "control reaches end of non-void function" */
bbb3bbdb AC	83	}
	84
	85	static void jmicron_tuneproc (ide_drive_t *drive, byte mode_wanted)
	86	{
	87	return;
	88	}
	89
	90	/**
	91	* config_jmicron_chipset_for_pio - set drive timings
	92	* @drive: drive to tune
	93	* @speed we want
	94	*
	95	*/
	96
	97	static void config_jmicron_chipset_for_pio (ide_drive_t *drive, byte set_speed)
	98	{
	99	u8 speed = XFER_PIO_0 + ide_get_best_pio_mode(drive, 255, 5, NULL);
	100	if (set_speed)
	101	(void) ide_config_drive_speed(drive, speed);
	102	}
	103
	104	/**
	105	* jmicron_tune_chipset - set controller timings
	106	* @drive: Drive to set up
	107	* @xferspeed: speed we want to achieve
	108	*
	109	* As the JMicron snoops for timings all we actually need to do is
	110	* make sure we don't set an invalid mode. We do need to honour
	111	* the cable detect here.
	112	*/
	113
	114	static int jmicron_tune_chipset (ide_drive_t *drive, byte xferspeed)
	115	{
2d5eaa6d	116	u8 speed = ide_rate_filter(drive, xferspeed);
bbb3bbdb AC	117
	118	return ide_config_drive_speed(drive, speed);
	119	}
	120
	121	/**
	122	* config_chipset_for_dma - configure for DMA
	123	* @drive: drive to configure
	124	*
	125	* As the JMicron snoops for timings all we actually need to do is
	126	* make sure we don't set an invalid mode.
	127	*/
	128
	129	static int config_chipset_for_dma (ide_drive_t *drive)
	130	{
2d5eaa6d	131	u8 speed = ide_max_dma_mode(drive);
bbb3bbdb	132
39baf8a7 BZ	133	if (!speed)
	134	return 0;
	135
bbb3bbdb AC	136	jmicron_tune_chipset(drive, speed);
	137	return ide_dma_enable(drive);
	138	}
	139
	140	/**
	141	* jmicron_configure_drive_for_dma - set up for DMA transfers
	142	* @drive: drive we are going to set up
	143	*
	144	* As the JMicron snoops for timings all we actually need to do is
	145	* make sure we don't set an invalid mode.
	146	*/
	147
	148	static int jmicron_config_drive_for_dma (ide_drive_t *drive)
	149	{
3608b5d7 BZ	150	if (ide_use_dma(drive) && config_chipset_for_dma(drive))
3608b5d7 BZ	151	return 0;
bbb3bbdb	152
bbb3bbdb	153	config_jmicron_chipset_for_pio(drive, 1);
3608b5d7 BZ	154
3608b5d7 BZ	155	return -1;
bbb3bbdb AC	156	}
	157
	158	/**
	159	* init_hwif_jmicron - set up hwif structs
	160	* @hwif: interface to set up
	161	*
	162	* Minimal set up is required for the Jmicron hardware.
	163	*/
	164
	165	static void __devinit init_hwif_jmicron(ide_hwif_t *hwif)
	166	{
	167	hwif->speedproc = &jmicron_tune_chipset;
	168	hwif->tuneproc = &jmicron_tuneproc;
	169
	170	hwif->drives[0].autotune = 1;
	171	hwif->drives[1].autotune = 1;
	172
	173	if (!hwif->dma_base)
	174	goto fallback;
	175
	176	hwif->atapi_dma = 1;
	177	hwif->ultra_mask = 0x7f;
	178	hwif->mwdma_mask = 0x07;
	179
	180	hwif->ide_dma_check = &jmicron_config_drive_for_dma;
	181	if (!(hwif->udma_four))
	182	hwif->udma_four = ata66_jmicron(hwif);
	183
	184	hwif->autodma = 1;
	185	hwif->drives[0].autodma = hwif->autodma;
	186	hwif->drives[1].autodma = hwif->autodma;
	187	return;
	188	fallback:
	189	hwif->autodma = 0;
	190	return;
	191	}
	192
	193	#define DECLARE_JMB_DEV(name_str) \
	194	{ \
	195	.name = name_str, \
	196	.init_hwif = init_hwif_jmicron, \
	197	.channels = 2, \
	198	.autodma = AUTODMA, \
	199	.bootable = ON_BOARD, \
	200	.enablebits = { {0x40, 1, 1}, {0x40, 0x10, 0x10} }, \
	201	}
	202
	203	static ide_pci_device_t jmicron_chipsets[] __devinitdata = {
	204	/* 0 */ DECLARE_JMB_DEV("JMB361"),
	205	/* 1 */ DECLARE_JMB_DEV("JMB363"),
	206	/* 2 */ DECLARE_JMB_DEV("JMB365"),
	207	/* 3 */ DECLARE_JMB_DEV("JMB366"),
	208	/* 4 */ DECLARE_JMB_DEV("JMB368"),
	209	};
	210
	211	/**
	212	* jmicron_init_one - pci layer discovery entry
	213	* @dev: PCI device
	214	* @id: ident table entry
	215	*
	216	* Called by the PCI code when it finds a Jmicron controller.
	217	* We then use the IDE PCI generic helper to do most of the work.
	218	*/
	219
220	static int __devinit jmicron_init_one(struct pci_dev dev, const struct pci_device_id id)
221	{
222	ide_setup_pci_device(dev, &jmicron_chipsets[id->driver_data]);
223	return 0;
224	}
225
ebbc2031 TH	226	/* If libata is configured, jmicron PCI quirk will configure it such
	227	* that the SATA ports are in AHCI function while the PATA ports are
	228	* in a separate IDE function. In such cases, match device class and
	229	* attach only to IDE. If libata isn't configured, keep the old
	230	* behavior for backward compatibility.
	231	*/
	232	#if defined(CONFIG_ATA) \|\| defined(CONFIG_ATA_MODULE)
	233	#define JMB_CLASS PCI_CLASS_STORAGE_IDE << 8
	234	#define JMB_CLASS_MASK 0xffff00
	235	#else
	236	#define JMB_CLASS 0
	237	#define JMB_CLASS_MASK 0
	238	#endif
	239
bbb3bbdb	240	static struct pci_device_id jmicron_pci_tbl[] = {
ebbc2031 TH	241	{ PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361,
	242	PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 0},
	243	{ PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363,
	244	PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 1},
	245	{ PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365,
	246	PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 2},
	247	{ PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366,
	248	PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 3},
	249	{ PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368,
	250	PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 4},
bbb3bbdb AC	251	{ 0, },
	252	};
	253
	254	MODULE_DEVICE_TABLE(pci, jmicron_pci_tbl);
	255
	256	static struct pci_driver driver = {
	257	.name = "JMicron IDE",
	258	.id_table = jmicron_pci_tbl,
	259	.probe = jmicron_init_one,
	260	};
	261
	262	static int __init jmicron_ide_init(void)
	263	{
	264	return ide_pci_register_driver(&driver);
	265	}
	266
	267	module_init(jmicron_ide_init);
	268
	269	MODULE_AUTHOR("Alan Cox");
	270	MODULE_DESCRIPTION("PCI driver module for the JMicron in legacy modes");
	271	MODULE_LICENSE("GPL");