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

/*
 *	Marvell PATA driver.
 *
 *	For the moment we drive the PATA port in legacy mode. That
 *	isn't making full use of the device functionality but it is
 *	easy to get working.
 *
 *	(c) 2006 Red Hat  <alan@redhat.com>
 */

#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 <linux/device.h>
#include <scsi/scsi_host.h>
#include <linux/libata.h>
#include <linux/ata.h>

#define DRV_NAME	"pata_marvell"
#define DRV_VERSION	"0.1.1"

/**
 *	marvell_pre_reset	-	check for 40/80 pin
 *	@ap: Port
 *
 *	Perform the PATA port setup we need.
 */

static int marvell_pre_reset(struct ata_port *ap)
{
	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
	u32 devices;
	void __iomem *barp;
	int i;

	/* Check if our port is enabled */

	barp = pci_iomap(pdev, 5, 0x10);
	if (barp == NULL)
		return -ENOMEM;
	printk("BAR5:");
	for(i = 0; i <= 0x0F; i++)
		printk("%02X:%02X ", i, readb(barp + i));
	printk("\n");

	devices = readl(barp + 0x0C);
	pci_iounmap(pdev, barp);

	if ((pdev->device == 0x6145) && (ap->port_no == 0) &&
	    (!(devices & 0x10)))	/* PATA enable ? */
		return -ENOENT;

	/* Cable type */
	switch(ap->port_no)
	{
	case 0:
		if (ioread8(ap->ioaddr.bmdma_addr + 1) & 1)
			ap->cbl = ATA_CBL_PATA40;
		else
			ap->cbl = ATA_CBL_PATA80;
		break;

	case 1: /* Legacy SATA port */
		ap->cbl = ATA_CBL_SATA;
		break;
	}
	return ata_std_prereset(ap);
}

/**
 *	marvell_error_handler - Setup and error handler
 *	@ap: Port to handle
 *
 *	LOCKING:
 *	None (inherited from caller).
 */

static void marvell_error_handler(struct ata_port *ap)
{
	return ata_bmdma_drive_eh(ap, marvell_pre_reset, ata_std_softreset,
				  NULL, ata_std_postreset);
}

/* No PIO or DMA methods needed for this device */

static struct scsi_host_template marvell_sht = {
	.module			= THIS_MODULE,
	.name			= DRV_NAME,
	.ioctl			= ata_scsi_ioctl,
	.queuecommand		= ata_scsi_queuecmd,
	.can_queue		= ATA_DEF_QUEUE,
	.this_id		= ATA_SHT_THIS_ID,
	.sg_tablesize		= LIBATA_MAX_PRD,
	.cmd_per_lun		= ATA_SHT_CMD_PER_LUN,
	.emulated		= ATA_SHT_EMULATED,
	.use_clustering		= ATA_SHT_USE_CLUSTERING,
	.proc_name		= DRV_NAME,
	.dma_boundary		= ATA_DMA_BOUNDARY,
	.slave_configure	= ata_scsi_slave_config,
	.slave_destroy		= ata_scsi_slave_destroy,
	/* Use standard CHS mapping rules */
	.bios_param		= ata_std_bios_param,
#ifdef CONFIG_PM
	.resume			= ata_scsi_device_resume,
	.suspend		= ata_scsi_device_suspend,
#endif
};

static const struct ata_port_operations marvell_ops = {
	.port_disable		= ata_port_disable,

	/* Task file is PCI ATA format, use helpers */
	.tf_load		= ata_tf_load,
	.tf_read		= ata_tf_read,
	.check_status		= ata_check_status,
	.exec_command		= ata_exec_command,
	.dev_select		= ata_std_dev_select,

	.freeze			= ata_bmdma_freeze,
	.thaw			= ata_bmdma_thaw,
	.error_handler		= marvell_error_handler,
	.post_internal_cmd	= ata_bmdma_post_internal_cmd,

	/* BMDMA handling is PCI ATA format, use helpers */
	.bmdma_setup		= ata_bmdma_setup,
	.bmdma_start		= ata_bmdma_start,
	.bmdma_stop		= ata_bmdma_stop,
	.bmdma_status		= ata_bmdma_status,
	.qc_prep		= ata_qc_prep,
	.qc_issue		= ata_qc_issue_prot,
	.data_xfer		= ata_data_xfer,

	/* Timeout handling */
	.irq_handler		= ata_interrupt,
	.irq_clear		= ata_bmdma_irq_clear,
	.irq_on			= ata_irq_on,
	.irq_ack		= ata_irq_ack,

	/* Generic PATA PCI ATA helpers */
	.port_start		= ata_port_start,
};


/**
 *	marvell_init_one - Register Marvell ATA PCI device with kernel services
 *	@pdev: PCI device to register
 *	@ent: Entry in marvell_pci_tbl matching with @pdev
 *
 *	Called from kernel PCI layer.
 *
 *	LOCKING:
 *	Inherited from PCI layer (may sleep).
 *
 *	RETURNS:
 *	Zero on success, or -ERRNO value.
 */

static int marvell_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
{
	static struct ata_port_info info = {
		.sht		= &marvell_sht,
		.flags		= ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,

		.pio_mask	= 0x1f,
		.mwdma_mask	= 0x07,
		.udma_mask 	= 0x3f,

		.port_ops	= &marvell_ops,
	};
	static struct ata_port_info info_sata = {
		.sht		= &marvell_sht,
		/* Slave possible as its magically mapped not real */
		.flags		= ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,

		.pio_mask	= 0x1f,
		.mwdma_mask	= 0x07,
		.udma_mask 	= 0x7f,

		.port_ops	= &marvell_ops,
	};
	struct ata_port_info *port_info[2] = { &info, &info_sata };
	int n_port = 2;

	if (pdev->device == 0x6101)
		n_port = 1;

	return ata_pci_init_one(pdev, port_info, n_port);
}

static const struct pci_device_id marvell_pci_tbl[] = {
	{ PCI_DEVICE(0x11AB, 0x6101), },
	{ PCI_DEVICE(0x11AB, 0x6145), },
	{ }	/* terminate list */
};

static struct pci_driver marvell_pci_driver = {
	.name			= DRV_NAME,
	.id_table		= marvell_pci_tbl,
	.probe			= marvell_init_one,
	.remove			= ata_pci_remove_one,
#ifdef CONFIG_PM
	.suspend		= ata_pci_device_suspend,
	.resume			= ata_pci_device_resume,
#endif
};

static int __init marvell_init(void)
{
	return pci_register_driver(&marvell_pci_driver);
}

static void __exit marvell_exit(void)
{
	pci_unregister_driver(&marvell_pci_driver);
}

module_init(marvell_init);
module_exit(marvell_exit);

MODULE_AUTHOR("Alan Cox");
MODULE_DESCRIPTION("SCSI low-level driver for Marvell ATA in legacy mode");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, marvell_pci_tbl);
MODULE_VERSION(DRV_VERSION);
Commit	Line	Data
75742cb4 AC	1	/*
	2	* Marvell PATA driver.
	3	*
	4	* For the moment we drive the PATA port in legacy mode. That
	5	* isn't making full use of the device functionality but it is
	6	* easy to get working.
	7	*
	8	* (c) 2006 Red Hat <alan@redhat.com>
	9	*/
	10
	11	#include <linux/kernel.h>
	12	#include <linux/module.h>
	13	#include <linux/pci.h>
	14	#include <linux/init.h>
	15	#include <linux/blkdev.h>
	16	#include <linux/delay.h>
	17	#include <linux/device.h>
	18	#include <scsi/scsi_host.h>
	19	#include <linux/libata.h>
	20	#include <linux/ata.h>
	21
	22	#define DRV_NAME "pata_marvell"
30ced0f0	23	#define DRV_VERSION "0.1.1"
75742cb4 AC	24
	25	/**
	26	* marvell_pre_reset - check for 40/80 pin
	27	* @ap: Port
	28	*
	29	* Perform the PATA port setup we need.
	30	*/
	31
	32	static int marvell_pre_reset(struct ata_port *ap)
	33	{
	34	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
	35	u32 devices;
75742cb4 AC	36	void __iomem *barp;
	37	int i;
	38
	39	/* Check if our port is enabled */
	40
6e9d8629	41	barp = pci_iomap(pdev, 5, 0x10);
75742cb4 AC	42	if (barp == NULL)
	43	return -ENOMEM;
	44	printk("BAR5:");
	45	for(i = 0; i <= 0x0F; i++)
	46	printk("%02X:%02X ", i, readb(barp + i));
	47	printk("\n");
f20b16ff	48
75742cb4	49	devices = readl(barp + 0x0C);
6e9d8629	50	pci_iounmap(pdev, barp);
f20b16ff	51
6e9d8629 JG	52	if ((pdev->device == 0x6145) && (ap->port_no == 0) &&
6e9d8629 JG	53	(!(devices & 0x10))) /* PATA enable ? */
75742cb4 AC	54	return -ENOENT;
	55
	56	/* Cable type */
	57	switch(ap->port_no)
	58	{
6e9d8629	59	case 0:
0d5ff566	60	if (ioread8(ap->ioaddr.bmdma_addr + 1) & 1)
6e9d8629	61	ap->cbl = ATA_CBL_PATA40;
099156db A	62	else
	63	ap->cbl = ATA_CBL_PATA80;
	64	break;
6e9d8629 JG	65
	66	case 1: /* Legacy SATA port */
	67	ap->cbl = ATA_CBL_SATA;
	68	break;
75742cb4 AC	69	}
	70	return ata_std_prereset(ap);
	71	}
	72
	73	/**
	74	* marvell_error_handler - Setup and error handler
	75	* @ap: Port to handle
	76	*
	77	* LOCKING:
	78	* None (inherited from caller).
	79	*/
	80
	81	static void marvell_error_handler(struct ata_port *ap)
	82	{
6e9d8629 JG	83	return ata_bmdma_drive_eh(ap, marvell_pre_reset, ata_std_softreset,
6e9d8629 JG	84	NULL, ata_std_postreset);
75742cb4 AC	85	}
	86
	87	/* No PIO or DMA methods needed for this device */
	88
	89	static struct scsi_host_template marvell_sht = {
	90	.module = THIS_MODULE,
	91	.name = DRV_NAME,
	92	.ioctl = ata_scsi_ioctl,
	93	.queuecommand = ata_scsi_queuecmd,
	94	.can_queue = ATA_DEF_QUEUE,
	95	.this_id = ATA_SHT_THIS_ID,
	96	.sg_tablesize = LIBATA_MAX_PRD,
75742cb4 AC	97	.cmd_per_lun = ATA_SHT_CMD_PER_LUN,
	98	.emulated = ATA_SHT_EMULATED,
	99	.use_clustering = ATA_SHT_USE_CLUSTERING,
	100	.proc_name = DRV_NAME,
	101	.dma_boundary = ATA_DMA_BOUNDARY,
	102	.slave_configure = ata_scsi_slave_config,
c972b60b	103	.slave_destroy = ata_scsi_slave_destroy,
75742cb4 AC	104	/* Use standard CHS mapping rules */
75742cb4 AC	105	.bios_param = ata_std_bios_param,
438ac6d5	106	#ifdef CONFIG_PM
30ced0f0 A	107	.resume = ata_scsi_device_resume,
30ced0f0 A	108	.suspend = ata_scsi_device_suspend,
438ac6d5	109	#endif
75742cb4 AC	110	};
	111
	112	static const struct ata_port_operations marvell_ops = {
	113	.port_disable = ata_port_disable,
	114
	115	/* Task file is PCI ATA format, use helpers */
	116	.tf_load = ata_tf_load,
	117	.tf_read = ata_tf_read,
	118	.check_status = ata_check_status,
	119	.exec_command = ata_exec_command,
	120	.dev_select = ata_std_dev_select,
	121
	122	.freeze = ata_bmdma_freeze,
	123	.thaw = ata_bmdma_thaw,
	124	.error_handler = marvell_error_handler,
	125	.post_internal_cmd = ata_bmdma_post_internal_cmd,
	126
	127	/* BMDMA handling is PCI ATA format, use helpers */
	128	.bmdma_setup = ata_bmdma_setup,
	129	.bmdma_start = ata_bmdma_start,
	130	.bmdma_stop = ata_bmdma_stop,
	131	.bmdma_status = ata_bmdma_status,
	132	.qc_prep = ata_qc_prep,
	133	.qc_issue = ata_qc_issue_prot,
0d5ff566	134	.data_xfer = ata_data_xfer,
75742cb4 AC	135
75742cb4 AC	136	/* Timeout handling */
75742cb4 AC	137	.irq_handler = ata_interrupt,
75742cb4 AC	138	.irq_clear = ata_bmdma_irq_clear,
246ce3b6 AI	139	.irq_on = ata_irq_on,
246ce3b6 AI	140	.irq_ack = ata_irq_ack,
75742cb4 AC	141
	142	/* Generic PATA PCI ATA helpers */
	143	.port_start = ata_port_start,
75742cb4 AC	144	};
	145
	146
	147	/**
	148	* marvell_init_one - Register Marvell ATA PCI device with kernel services
	149	* @pdev: PCI device to register
	150	* @ent: Entry in marvell_pci_tbl matching with @pdev
	151	*
	152	* Called from kernel PCI layer.
	153	*
	154	* LOCKING:
	155	* Inherited from PCI layer (may sleep).
	156	*
	157	* RETURNS:
	158	* Zero on success, or -ERRNO value.
	159	*/
	160
	161	static int marvell_init_one (struct pci_dev pdev, const struct pci_device_id id)
	162	{
	163	static struct ata_port_info info = {
	164	.sht = &marvell_sht,
6e9d8629	165	.flags = ATA_FLAG_SLAVE_POSS \| ATA_FLAG_SRST,
75742cb4 AC	166
	167	.pio_mask = 0x1f,
	168	.mwdma_mask = 0x07,
	169	.udma_mask = 0x3f,
	170
	171	.port_ops = &marvell_ops,
	172	};
	173	static struct ata_port_info info_sata = {
	174	.sht = &marvell_sht,
	175	/* Slave possible as its magically mapped not real */
6e9d8629	176	.flags = ATA_FLAG_SLAVE_POSS \| ATA_FLAG_SRST,
75742cb4 AC	177
	178	.pio_mask = 0x1f,
	179	.mwdma_mask = 0x07,
	180	.udma_mask = 0x7f,
	181
	182	.port_ops = &marvell_ops,
	183	};
	184	struct ata_port_info *port_info[2] = { &info, &info_sata };
	185	int n_port = 2;
6e9d8629	186
75742cb4 AC	187	if (pdev->device == 0x6101)
75742cb4 AC	188	n_port = 1;
6e9d8629	189
75742cb4 AC	190	return ata_pci_init_one(pdev, port_info, n_port);
	191	}
	192
	193	static const struct pci_device_id marvell_pci_tbl[] = {
	194	{ PCI_DEVICE(0x11AB, 0x6101), },
	195	{ PCI_DEVICE(0x11AB, 0x6145), },
	196	{ } /* terminate list */
	197	};
	198
	199	static struct pci_driver marvell_pci_driver = {
	200	.name = DRV_NAME,
	201	.id_table = marvell_pci_tbl,
	202	.probe = marvell_init_one,
	203	.remove = ata_pci_remove_one,
438ac6d5	204	#ifdef CONFIG_PM
30ced0f0 A	205	.suspend = ata_pci_device_suspend,
30ced0f0 A	206	.resume = ata_pci_device_resume,
438ac6d5	207	#endif
75742cb4 AC	208	};
	209
	210	static int __init marvell_init(void)
	211	{
	212	return pci_register_driver(&marvell_pci_driver);
	213	}
	214
	215	static void __exit marvell_exit(void)
	216	{
	217	pci_unregister_driver(&marvell_pci_driver);
	218	}
	219
	220	module_init(marvell_init);
	221	module_exit(marvell_exit);
	222
	223	MODULE_AUTHOR("Alan Cox");
	224	MODULE_DESCRIPTION("SCSI low-level driver for Marvell ATA in legacy mode");
	225	MODULE_LICENSE("GPL");
	226	MODULE_DEVICE_TABLE(pci, marvell_pci_tbl);
	227	MODULE_VERSION(DRV_VERSION);
	228