[deliverable/linux.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
 *
 *	Returns the cable type.
 */

static u8 __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 ATA_CBL_PATA40;
		return ATA_CBL_PATA80;
	case PORT_PATA1:
		if (control5 & (1 << 19))	/* 40/80 pin secondary */
			return ATA_CBL_PATA40;
		return ATA_CBL_PATA80;
	case PORT_SATA:
		break;
	}
	/* Avoid bogus "control reaches end of non-void function" */
	return ATA_CBL_PATA80;
}

static void jmicron_set_pio_mode(ide_drive_t *drive, const u8 pio)
{
}

/**
 *	jmicron_set_dma_mode	-	set host controller for DMA mode
 *	@drive: drive
 *	@mode: DMA mode
 *
 *	As the JMicron snoops for timings we don't need to do anything here.
 */

static void jmicron_set_dma_mode(ide_drive_t *drive, const u8 mode)
{
}

/**
 *	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->set_pio_mode = &jmicron_set_pio_mode;
	hwif->set_dma_mode = &jmicron_set_dma_mode;

	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;

	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
		hwif->cbl = ata66_jmicron(hwif);

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

static ide_pci_device_t jmicron_chipset __devinitdata = {
	.name		= "JMB",
	.init_hwif	= init_hwif_jmicron,
	.autodma	= AUTODMA,
	.bootable	= ON_BOARD,
	.enablebits	= { { 0x40, 0x01, 0x01 }, { 0x40, 0x10, 0x10 } },
	.pio_mask	= ATA_PIO5,
};

/**
 *	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_chipset);
	return 0;
}

/* All JMB PATA controllers have and will continue to have the same
 * interface.  Matching vendor and device class is enough for all
 * current and future controllers if the controller is programmed
 * properly.
 *
 * If libata is configured, jmicron PCI quirk programs the controller
 * into the correct mode.  If libata isn't configured, match known
 * device IDs too to maintain backward compatibility.
 */
static struct pci_device_id jmicron_pci_tbl[] = {
#if !defined(CONFIG_ATA) && !defined(CONFIG_ATA_MODULE)
	{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB361) },
	{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB363) },
	{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB365) },
	{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB366) },
	{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB368) },
#endif
	{ PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
	  PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 0 },
	{ 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	*
49521f97	28	* Returns the cable type.
bbb3bbdb AC	29	*/
bbb3bbdb AC	30
49521f97	31	static u8 __devinit ata66_jmicron(ide_hwif_t *hwif)
bbb3bbdb AC	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 */
49521f97 BZ	73	return ATA_CBL_PATA40;
49521f97 BZ	74	return ATA_CBL_PATA80;
bbb3bbdb AC	75	case PORT_PATA1:
bbb3bbdb AC	76	if (control5 & (1 << 19)) /* 40/80 pin secondary */
49521f97 BZ	77	return ATA_CBL_PATA40;
49521f97 BZ	78	return ATA_CBL_PATA80;
bbb3bbdb	79	case PORT_SATA:
a51545ab	80	break;
bbb3bbdb	81	}
49521f97 BZ	82	/* Avoid bogus "control reaches end of non-void function" */
49521f97 BZ	83	return ATA_CBL_PATA80;
bbb3bbdb AC	84	}
bbb3bbdb AC	85
26bcb879	86	static void jmicron_set_pio_mode(ide_drive_t *drive, const u8 pio)
bbb3bbdb	87	{
bbb3bbdb AC	88	}
	89
	90	/**
88b2b32b BZ	91	* jmicron_set_dma_mode - set host controller for DMA mode
	92	* @drive: drive
	93	* @mode: DMA mode
bbb3bbdb	94	*
88b2b32b	95	* As the JMicron snoops for timings we don't need to do anything here.
bbb3bbdb AC	96	*/
bbb3bbdb AC	97
88b2b32b	98	static void jmicron_set_dma_mode(ide_drive_t *drive, const u8 mode)
bbb3bbdb	99	{
bbb3bbdb AC	100	}
bbb3bbdb AC	101
bbb3bbdb AC	102	/**
	103	* init_hwif_jmicron - set up hwif structs
	104	* @hwif: interface to set up
	105	*
	106	* Minimal set up is required for the Jmicron hardware.
	107	*/
	108
	109	static void __devinit init_hwif_jmicron(ide_hwif_t *hwif)
	110	{
26bcb879	111	hwif->set_pio_mode = &jmicron_set_pio_mode;
88b2b32b	112	hwif->set_dma_mode = &jmicron_set_dma_mode;
bbb3bbdb AC	113
	114	hwif->drives[0].autotune = 1;
	115	hwif->drives[1].autotune = 1;
	116
	117	if (!hwif->dma_base)
	118	goto fallback;
	119
	120	hwif->atapi_dma = 1;
	121	hwif->ultra_mask = 0x7f;
	122	hwif->mwdma_mask = 0x07;
	123
49521f97 BZ	124	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
49521f97 BZ	125	hwif->cbl = ata66_jmicron(hwif);
bbb3bbdb AC	126
	127	hwif->autodma = 1;
	128	hwif->drives[0].autodma = hwif->autodma;
	129	hwif->drives[1].autodma = hwif->autodma;
	130	return;
	131	fallback:
	132	hwif->autodma = 0;
	133	return;
	134	}
	135
bda7970c TH	136	static ide_pci_device_t jmicron_chipset __devinitdata = {
	137	.name = "JMB",
	138	.init_hwif = init_hwif_jmicron,
	139	.autodma = AUTODMA,
	140	.bootable = ON_BOARD,
	141	.enablebits = { { 0x40, 0x01, 0x01 }, { 0x40, 0x10, 0x10 } },
	142	.pio_mask = ATA_PIO5,
bbb3bbdb AC	143	};
	144
	145	/**
	146	* jmicron_init_one - pci layer discovery entry
	147	* @dev: PCI device
	148	* @id: ident table entry
	149	*
	150	* Called by the PCI code when it finds a Jmicron controller.
	151	* We then use the IDE PCI generic helper to do most of the work.
	152	*/
	153
	154	static int __devinit jmicron_init_one(struct pci_dev dev, const struct pci_device_id id)
	155	{
bda7970c	156	ide_setup_pci_device(dev, &jmicron_chipset);
bbb3bbdb AC	157	return 0;
	158	}
	159
bda7970c TH	160	/* All JMB PATA controllers have and will continue to have the same
	161	* interface. Matching vendor and device class is enough for all
	162	* current and future controllers if the controller is programmed
	163	* properly.
	164	*
	165	* If libata is configured, jmicron PCI quirk programs the controller
	166	* into the correct mode. If libata isn't configured, match known
	167	* device IDs too to maintain backward compatibility.
ebbc2031	168	*/
bbb3bbdb	169	static struct pci_device_id jmicron_pci_tbl[] = {
bda7970c TH	170	#if !defined(CONFIG_ATA) && !defined(CONFIG_ATA_MODULE)
	171	{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB361) },
	172	{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB363) },
	173	{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB365) },
	174	{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB366) },
	175	{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB368) },
	176	#endif
	177	{ PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
	178	PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 0 },
bbb3bbdb AC	179	{ 0, },
	180	};
	181
	182	MODULE_DEVICE_TABLE(pci, jmicron_pci_tbl);
	183
	184	static struct pci_driver driver = {
	185	.name = "JMicron IDE",
	186	.id_table = jmicron_pci_tbl,
	187	.probe = jmicron_init_one,
	188	};
	189
	190	static int __init jmicron_ide_init(void)
	191	{
	192	return ide_pci_register_driver(&driver);
	193	}
	194
	195	module_init(jmicron_ide_init);
	196
	197	MODULE_AUTHOR("Alan Cox");
	198	MODULE_DESCRIPTION("PCI driver module for the JMicron in legacy modes");
	199	MODULE_LICENSE("GPL");