[deliverable/linux.git] / drivers / ata / pata_ninja32.c

/*
 * pata_ninja32.c 	- Ninja32 PATA for new ATA layer
 *			  (C) 2007 Red Hat Inc
 *
 * Note: The controller like many controllers has shared timings for
 * PIO and DMA. We thus flip to the DMA timings in dma_start and flip back
 * in the dma_stop function. Thus we actually don't need a set_dmamode
 * method as the PIO method is always called and will set the right PIO
 * timing parameters.
 *
 * The Ninja32 Cardbus is not a generic SFF controller. Instead it is
 * laid out as follows off BAR 0. This is based upon Mark Lord's delkin
 * driver and the extensive analysis done by the BSD developers, notably
 * ITOH Yasufumi.
 *
 *	Base + 0x00 IRQ Status
 *	Base + 0x01 IRQ control
 *	Base + 0x02 Chipset control
 *	Base + 0x03 Unknown
 *	Base + 0x04 VDMA and reset control + wait bits
 *	Base + 0x08 BMIMBA
 *	Base + 0x0C DMA Length
 *	Base + 0x10 Taskfile
 *	Base + 0x18 BMDMA Status ?
 *	Base + 0x1C
 *	Base + 0x1D Bus master control
 *		bit 0 = enable
 *		bit 1 = 0 write/1 read
 *		bit 2 = 1 sgtable
 *		bit 3 = go
 *		bit 4-6 wait bits
 *		bit 7 = done
 *	Base + 0x1E AltStatus
 *	Base + 0x1F timing register
 */

#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_ninja32"
#define DRV_VERSION "0.1.3"


/**
 *	ninja32_set_piomode	-	set initial PIO mode data
 *	@ap: ATA interface
 *	@adev: ATA device
 *
 *	Called to do the PIO mode setup. Our timing registers are shared
 *	but we want to set the PIO timing by default.
 */

static void ninja32_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
	static u16 pio_timing[5] = {
		0xd6, 0x85, 0x44, 0x33, 0x13
	};
	iowrite8(pio_timing[adev->pio_mode - XFER_PIO_0],
		 ap->ioaddr.bmdma_addr + 0x1f);
	ap->private_data = adev;
}


static void ninja32_dev_select(struct ata_port *ap, unsigned int device)
{
	struct ata_device *adev = &ap->link.device[device];
	if (ap->private_data != adev) {
		iowrite8(0xd6, ap->ioaddr.bmdma_addr + 0x1f);
		ata_sff_dev_select(ap, device);
		ninja32_set_piomode(ap, adev);
	}
}

static struct scsi_host_template ninja32_sht = {
	ATA_BMDMA_SHT(DRV_NAME),
};

static struct ata_port_operations ninja32_port_ops = {
	.inherits	= &ata_bmdma_port_ops,
	.sff_dev_select = ninja32_dev_select,
	.cable_detect	= ata_cable_40wire,
	.set_piomode	= ninja32_set_piomode,
};

static void ninja32_program(void __iomem *base)
{
	iowrite8(0x05, base + 0x01);	/* Enable interrupt lines */
	iowrite8(0xBE, base + 0x02);	/* Burst, ?? setup */
	iowrite8(0x01, base + 0x03);	/* Unknown */
	iowrite8(0x20, base + 0x04);	/* WAIT0 */
	iowrite8(0x8f, base + 0x05);	/* Unknown */
	iowrite8(0xa4, base + 0x1c);	/* Unknown */
	iowrite8(0x83, base + 0x1d);	/* BMDMA control: WAIT0 */
}

static int ninja32_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
	struct ata_host *host;
	struct ata_port *ap;
	void __iomem *base;
	int rc;

	host = ata_host_alloc(&dev->dev, 1);
	if (!host)
		return -ENOMEM;
	ap = host->ports[0];

	/* Set up the PCI device */
	rc = pcim_enable_device(dev);
	if (rc)
		return rc;
	rc = pcim_iomap_regions(dev, 1 << 0, DRV_NAME);
	if (rc == -EBUSY)
		pcim_pin_device(dev);
	if (rc)
		return rc;

	host->iomap = pcim_iomap_table(dev);
	rc = pci_set_dma_mask(dev, ATA_DMA_MASK);
	if (rc)
		return rc;
	rc = pci_set_consistent_dma_mask(dev, ATA_DMA_MASK);
	if (rc)
		return rc;
	pci_set_master(dev);

	/* Set up the register mappings. We use the I/O mapping as only the
	   older chips also have MMIO on BAR 1 */
	base = host->iomap[0];
	if (!base)
		return -ENOMEM;
	ap->ops = &ninja32_port_ops;
	ap->pio_mask = 0x1F;
	ap->flags |= ATA_FLAG_SLAVE_POSS;

	ap->ioaddr.cmd_addr = base + 0x10;
	ap->ioaddr.ctl_addr = base + 0x1E;
	ap->ioaddr.altstatus_addr = base + 0x1E;
	ap->ioaddr.bmdma_addr = base;
	ata_sff_std_ports(&ap->ioaddr);

	ninja32_program(base);
	/* FIXME: Should we disable them at remove ? */
	return ata_host_activate(host, dev->irq, ata_sff_interrupt,
				 IRQF_SHARED, &ninja32_sht);
}

#ifdef CONFIG_PM

static int ninja32_reinit_one(struct pci_dev *pdev)
{
	struct ata_host *host = dev_get_drvdata(&pdev->dev);
	int rc;

	rc = ata_pci_device_do_resume(pdev);
	if (rc)
		return rc;
	ninja32_program(host->iomap[0]);
	ata_host_resume(host);
	return 0;			
}
#endif

static const struct pci_device_id ninja32[] = {
	{ 0x10FC, 0x0003, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
	{ 0x1145, 0x8008, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
	{ 0x1145, 0xf008, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
	{ 0x1145, 0xf021, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
	{ 0x1145, 0xf024, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
	{ 0x1145, 0xf02C, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
	{ },
};

static struct pci_driver ninja32_pci_driver = {
	.name 		= DRV_NAME,
	.id_table	= ninja32,
	.probe 		= ninja32_init_one,
	.remove		= ata_pci_remove_one,
#ifdef CONFIG_PM
	.suspend	= ata_pci_device_suspend,
	.resume		= ninja32_reinit_one,
#endif
};

static int __init ninja32_init(void)
{
	return pci_register_driver(&ninja32_pci_driver);
}

static void __exit ninja32_exit(void)
{
	pci_unregister_driver(&ninja32_pci_driver);
}

MODULE_AUTHOR("Alan Cox");
MODULE_DESCRIPTION("low-level driver for Ninja32 ATA");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, ninja32);
MODULE_VERSION(DRV_VERSION);

module_init(ninja32_init);
module_exit(ninja32_exit);
Commit	Line	Data
51dbd490 AC	1	/*
	2	* pata_ninja32.c - Ninja32 PATA for new ATA layer
	3	* (C) 2007 Red Hat Inc
51dbd490 AC	4	*
	5	* Note: The controller like many controllers has shared timings for
	6	* PIO and DMA. We thus flip to the DMA timings in dma_start and flip back
	7	* in the dma_stop function. Thus we actually don't need a set_dmamode
	8	* method as the PIO method is always called and will set the right PIO
	9	* timing parameters.
	10	*
	11	* The Ninja32 Cardbus is not a generic SFF controller. Instead it is
	12	* laid out as follows off BAR 0. This is based upon Mark Lord's delkin
	13	* driver and the extensive analysis done by the BSD developers, notably
	14	* ITOH Yasufumi.
	15	*
	16	* Base + 0x00 IRQ Status
	17	* Base + 0x01 IRQ control
	18	* Base + 0x02 Chipset control
41946450	19	* Base + 0x03 Unknown
51dbd490 AC	20	* Base + 0x04 VDMA and reset control + wait bits
	21	* Base + 0x08 BMIMBA
	22	* Base + 0x0C DMA Length
	23	* Base + 0x10 Taskfile
	24	* Base + 0x18 BMDMA Status ?
	25	* Base + 0x1C
	26	* Base + 0x1D Bus master control
	27	* bit 0 = enable
	28	* bit 1 = 0 write/1 read
	29	* bit 2 = 1 sgtable
	30	* bit 3 = go
	31	* bit 4-6 wait bits
	32	* bit 7 = done
	33	* Base + 0x1E AltStatus
	34	* Base + 0x1F timing register
	35	*/
	36
	37	#include <linux/kernel.h>
	38	#include <linux/module.h>
	39	#include <linux/pci.h>
	40	#include <linux/init.h>
	41	#include <linux/blkdev.h>
	42	#include <linux/delay.h>
	43	#include <scsi/scsi_host.h>
	44	#include <linux/libata.h>
	45
	46	#define DRV_NAME "pata_ninja32"
b604958a	47	#define DRV_VERSION "0.1.3"
51dbd490 AC	48
	49
	50	/**
	51	* ninja32_set_piomode - set initial PIO mode data
	52	* @ap: ATA interface
	53	* @adev: ATA device
	54	*
	55	* Called to do the PIO mode setup. Our timing registers are shared
	56	* but we want to set the PIO timing by default.
	57	*/
	58
	59	static void ninja32_set_piomode(struct ata_port ap, struct ata_device adev)
	60	{
	61	static u16 pio_timing[5] = {
	62	0xd6, 0x85, 0x44, 0x33, 0x13
	63	};
11b7becc JG	64	iowrite8(pio_timing[adev->pio_mode - XFER_PIO_0],
11b7becc JG	65	ap->ioaddr.bmdma_addr + 0x1f);
51dbd490 AC	66	ap->private_data = adev;
	67	}
	68
	69
	70	static void ninja32_dev_select(struct ata_port *ap, unsigned int device)
	71	{
	72	struct ata_device *adev = &ap->link.device[device];
	73	if (ap->private_data != adev) {
	74	iowrite8(0xd6, ap->ioaddr.bmdma_addr + 0x1f);
9363c382	75	ata_sff_dev_select(ap, device);
51dbd490 AC	76	ninja32_set_piomode(ap, adev);
	77	}
	78	}
	79
	80	static struct scsi_host_template ninja32_sht = {
68d1d07b	81	ATA_BMDMA_SHT(DRV_NAME),
51dbd490 AC	82	};
	83
	84	static struct ata_port_operations ninja32_port_ops = {
029cfd6b	85	.inherits = &ata_bmdma_port_ops,
5682ed33	86	.sff_dev_select = ninja32_dev_select,
51dbd490	87	.cable_detect = ata_cable_40wire,
029cfd6b	88	.set_piomode = ninja32_set_piomode,
51dbd490 AC	89	};
51dbd490 AC	90
e7c0d217 AC	91	static void ninja32_program(void __iomem *base)
	92	{
	93	iowrite8(0x05, base + 0x01); /* Enable interrupt lines */
	94	iowrite8(0xBE, base + 0x02); /* Burst, ?? setup */
	95	iowrite8(0x01, base + 0x03); /* Unknown */
	96	iowrite8(0x20, base + 0x04); /* WAIT0 */
	97	iowrite8(0x8f, base + 0x05); /* Unknown */
	98	iowrite8(0xa4, base + 0x1c); /* Unknown */
	99	iowrite8(0x83, base + 0x1d); /* BMDMA control: WAIT0 */
	100	}
	101
51dbd490 AC	102	static int ninja32_init_one(struct pci_dev dev, const struct pci_device_id id)
	103	{
	104	struct ata_host *host;
	105	struct ata_port *ap;
	106	void __iomem *base;
	107	int rc;
	108
	109	host = ata_host_alloc(&dev->dev, 1);
	110	if (!host)
	111	return -ENOMEM;
	112	ap = host->ports[0];
	113
	114	/* Set up the PCI device */
	115	rc = pcim_enable_device(dev);
	116	if (rc)
	117	return rc;
	118	rc = pcim_iomap_regions(dev, 1 << 0, DRV_NAME);
	119	if (rc == -EBUSY)
	120	pcim_pin_device(dev);
	121	if (rc)
	122	return rc;
	123
	124	host->iomap = pcim_iomap_table(dev);
	125	rc = pci_set_dma_mask(dev, ATA_DMA_MASK);
	126	if (rc)
	127	return rc;
	128	rc = pci_set_consistent_dma_mask(dev, ATA_DMA_MASK);
	129	if (rc)
	130	return rc;
	131	pci_set_master(dev);
	132
b604958a AC	133	/* Set up the register mappings. We use the I/O mapping as only the
b604958a AC	134	older chips also have MMIO on BAR 1 */
51dbd490 AC	135	base = host->iomap[0];
	136	if (!base)
	137	return -ENOMEM;
	138	ap->ops = &ninja32_port_ops;
	139	ap->pio_mask = 0x1F;
	140	ap->flags \|= ATA_FLAG_SLAVE_POSS;
	141
	142	ap->ioaddr.cmd_addr = base + 0x10;
	143	ap->ioaddr.ctl_addr = base + 0x1E;
	144	ap->ioaddr.altstatus_addr = base + 0x1E;
	145	ap->ioaddr.bmdma_addr = base;
9363c382	146	ata_sff_std_ports(&ap->ioaddr);
51dbd490	147
e7c0d217	148	ninja32_program(base);
51dbd490	149	/* FIXME: Should we disable them at remove ? */
9363c382	150	return ata_host_activate(host, dev->irq, ata_sff_interrupt,
11b7becc	151	IRQF_SHARED, &ninja32_sht);
51dbd490 AC	152	}
51dbd490 AC	153
e7c0d217 AC	154	#ifdef CONFIG_PM
	155
	156	static int ninja32_reinit_one(struct pci_dev *pdev)
	157	{
	158	struct ata_host *host = dev_get_drvdata(&pdev->dev);
	159	int rc;
	160
	161	rc = ata_pci_device_do_resume(pdev);
	162	if (rc)
	163	return rc;
	164	ninja32_program(host->iomap[0]);
	165	ata_host_resume(host);
	166	return 0;
	167	}
	168	#endif
	169
51dbd490	170	static const struct pci_device_id ninja32[] = {
b604958a AC	171	{ 0x10FC, 0x0003, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
	172	{ 0x1145, 0x8008, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
	173	{ 0x1145, 0xf008, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
11b7becc JG	174	{ 0x1145, 0xf021, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
11b7becc JG	175	{ 0x1145, 0xf024, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
b604958a	176	{ 0x1145, 0xf02C, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
51dbd490 AC	177	{ },
	178	};
	179
	180	static struct pci_driver ninja32_pci_driver = {
	181	.name = DRV_NAME,
	182	.id_table = ninja32,
	183	.probe = ninja32_init_one,
e7c0d217 AC	184	.remove = ata_pci_remove_one,
	185	#ifdef CONFIG_PM
	186	.suspend = ata_pci_device_suspend,
	187	.resume = ninja32_reinit_one,
	188	#endif
51dbd490 AC	189	};
	190
	191	static int __init ninja32_init(void)
	192	{
	193	return pci_register_driver(&ninja32_pci_driver);
	194	}
	195
	196	static void __exit ninja32_exit(void)
	197	{
	198	pci_unregister_driver(&ninja32_pci_driver);
	199	}
	200
	201	MODULE_AUTHOR("Alan Cox");
	202	MODULE_DESCRIPTION("low-level driver for Ninja32 ATA");
	203	MODULE_LICENSE("GPL");
	204	MODULE_DEVICE_TABLE(pci, ninja32);
	205	MODULE_VERSION(DRV_VERSION);
	206
	207	module_init(ninja32_init);
	208	module_exit(ninja32_exit);