[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/hdreg.h>
#include <linux/ide.h>
#include <linux/init.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 = to_pci_dev(hwif->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->cable_detect = ata66_jmicron;
}

static const struct ide_port_info jmicron_chipset __devinitdata = {
	.name		= "JMB",
	.init_hwif	= init_hwif_jmicron,
	.enablebits	= { { 0x40, 0x01, 0x01 }, { 0x40, 0x10, 0x10 } },
	.pio_mask	= ATA_PIO5,
	.mwdma_mask	= ATA_MWDMA2,
	.udma_mask	= ATA_UDMA6,
};

/**
 *	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)
{
	return ide_setup_pci_device(dev, &jmicron_chipset);
}

/* 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>
bbb3bbdb AC	11	#include <linux/hdreg.h>
	12	#include <linux/ide.h>
	13	#include <linux/init.h>
	14
bbb3bbdb AC	15	typedef enum {
	16	PORT_PATA0 = 0,
	17	PORT_PATA1 = 1,
	18	PORT_SATA = 2,
	19	} port_type;
	20
bbb3bbdb AC	21	/**
	22	* ata66_jmicron - Cable check
	23	* @hwif: IDE port
	24	*
49521f97	25	* Returns the cable type.
bbb3bbdb AC	26	*/
bbb3bbdb AC	27
49521f97	28	static u8 __devinit ata66_jmicron(ide_hwif_t *hwif)
bbb3bbdb	29	{
36501650	30	struct pci_dev *pdev = to_pci_dev(hwif->dev);
bbb3bbdb AC	31
	32	u32 control;
	33	u32 control5;
	34
	35	int port = hwif->channel;
	36	port_type port_map[2];
	37
	38	pci_read_config_dword(pdev, 0x40, &control);
	39
	40	/* There are two basic mappings. One has the two SATA ports merged
	41	as master/slave and the secondary as PATA, the other has only the
	42	SATA port mapped */
	43	if (control & (1 << 23)) {
	44	port_map[0] = PORT_SATA;
	45	port_map[1] = PORT_PATA0;
	46	} else {
	47	port_map[0] = PORT_SATA;
	48	port_map[1] = PORT_SATA;
	49	}
	50
	51	/* The 365/366 may have this bit set to map the second PATA port
	52	as the internal primary channel */
	53	pci_read_config_dword(pdev, 0x80, &control5);
	54	if (control5 & (1<<24))
	55	port_map[0] = PORT_PATA1;
	56
	57	/* The two ports may then be logically swapped by the firmware */
	58	if (control & (1 << 22))
	59	port = port ^ 1;
	60
	61	/*
	62	* Now we know which physical port we are talking about we can
	63	* actually do our cable checking etc. Thankfully we don't need
	64	* to do the plumbing for other cases.
	65	*/
740694f5	66	switch (port_map[port]) {
bbb3bbdb AC	67	case PORT_PATA0:
bbb3bbdb AC	68	if (control & (1 << 3)) /* 40/80 pin primary */
49521f97 BZ	69	return ATA_CBL_PATA40;
49521f97 BZ	70	return ATA_CBL_PATA80;
bbb3bbdb AC	71	case PORT_PATA1:
bbb3bbdb AC	72	if (control5 & (1 << 19)) /* 40/80 pin secondary */
49521f97 BZ	73	return ATA_CBL_PATA40;
49521f97 BZ	74	return ATA_CBL_PATA80;
bbb3bbdb	75	case PORT_SATA:
a51545ab	76	break;
bbb3bbdb	77	}
49521f97 BZ	78	/* Avoid bogus "control reaches end of non-void function" */
49521f97 BZ	79	return ATA_CBL_PATA80;
bbb3bbdb AC	80	}
bbb3bbdb AC	81
26bcb879	82	static void jmicron_set_pio_mode(ide_drive_t *drive, const u8 pio)
bbb3bbdb	83	{
bbb3bbdb AC	84	}
	85
	86	/**
88b2b32b BZ	87	* jmicron_set_dma_mode - set host controller for DMA mode
	88	* @drive: drive
	89	* @mode: DMA mode
bbb3bbdb	90	*
88b2b32b	91	* As the JMicron snoops for timings we don't need to do anything here.
bbb3bbdb AC	92	*/
bbb3bbdb AC	93
88b2b32b	94	static void jmicron_set_dma_mode(ide_drive_t *drive, const u8 mode)
bbb3bbdb	95	{
bbb3bbdb AC	96	}
bbb3bbdb AC	97
bbb3bbdb AC	98	/**
	99	* init_hwif_jmicron - set up hwif structs
	100	* @hwif: interface to set up
	101	*
	102	* Minimal set up is required for the Jmicron hardware.
	103	*/
	104
	105	static void __devinit init_hwif_jmicron(ide_hwif_t *hwif)
	106	{
26bcb879	107	hwif->set_pio_mode = &jmicron_set_pio_mode;
88b2b32b	108	hwif->set_dma_mode = &jmicron_set_dma_mode;
bbb3bbdb	109
bfa14b42	110	hwif->cable_detect = ata66_jmicron;
bbb3bbdb AC	111	}
bbb3bbdb AC	112
85620436	113	static const struct ide_port_info jmicron_chipset __devinitdata = {
bda7970c TH	114	.name = "JMB",
bda7970c TH	115	.init_hwif = init_hwif_jmicron,
bda7970c TH	116	.enablebits = { { 0x40, 0x01, 0x01 }, { 0x40, 0x10, 0x10 } },
bda7970c TH	117	.pio_mask = ATA_PIO5,
5f8b6c34 BZ	118	.mwdma_mask = ATA_MWDMA2,
5f8b6c34 BZ	119	.udma_mask = ATA_UDMA6,
bbb3bbdb AC	120	};
	121
	122	/**
	123	* jmicron_init_one - pci layer discovery entry
	124	* @dev: PCI device
	125	* @id: ident table entry
	126	*
	127	* Called by the PCI code when it finds a Jmicron controller.
	128	* We then use the IDE PCI generic helper to do most of the work.
	129	*/
	130
	131	static int __devinit jmicron_init_one(struct pci_dev dev, const struct pci_device_id id)
	132	{
24ffbd62	133	return ide_setup_pci_device(dev, &jmicron_chipset);
bbb3bbdb AC	134	}
bbb3bbdb AC	135
bda7970c TH	136	/* All JMB PATA controllers have and will continue to have the same
	137	* interface. Matching vendor and device class is enough for all
	138	* current and future controllers if the controller is programmed
	139	* properly.
	140	*
	141	* If libata is configured, jmicron PCI quirk programs the controller
	142	* into the correct mode. If libata isn't configured, match known
	143	* device IDs too to maintain backward compatibility.
ebbc2031	144	*/
bbb3bbdb	145	static struct pci_device_id jmicron_pci_tbl[] = {
bda7970c TH	146	#if !defined(CONFIG_ATA) && !defined(CONFIG_ATA_MODULE)
	147	{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB361) },
	148	{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB363) },
	149	{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB365) },
	150	{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB366) },
	151	{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB368) },
	152	#endif
	153	{ PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
	154	PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 0 },
bbb3bbdb AC	155	{ 0, },
	156	};
	157
	158	MODULE_DEVICE_TABLE(pci, jmicron_pci_tbl);
	159
	160	static struct pci_driver driver = {
	161	.name = "JMicron IDE",
	162	.id_table = jmicron_pci_tbl,
	163	.probe = jmicron_init_one,
	164	};
	165
	166	static int __init jmicron_ide_init(void)
	167	{
	168	return ide_pci_register_driver(&driver);
	169	}
	170
	171	module_init(jmicron_ide_init);
	172
	173	MODULE_AUTHOR("Alan Cox");
	174	MODULE_DESCRIPTION("PCI driver module for the JMicron in legacy modes");
	175	MODULE_LICENSE("GPL");