[net-next-2.6.git] / drivers / ata / sata_uli.c

/*
 *  sata_uli.c - ULi Electronics SATA
 *
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; see the file COPYING.  If not, write to
 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *
 *  libata documentation is available via 'make {ps|pdf}docs',
 *  as Documentation/DocBook/libata.*
 *
 *  Hardware documentation available under NDA.
 *
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/gfp.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/device.h>
#include <scsi/scsi_host.h>
#include <linux/libata.h>

#define DRV_NAME	"sata_uli"
#define DRV_VERSION	"1.3"

enum {
	uli_5289		= 0,
	uli_5287		= 1,
	uli_5281		= 2,

	uli_max_ports		= 4,

	/* PCI configuration registers */
	ULI5287_BASE		= 0x90, /* sata0 phy SCR registers */
	ULI5287_OFFS		= 0x10, /* offset from sata0->sata1 phy regs */
	ULI5281_BASE		= 0x60, /* sata0 phy SCR  registers */
	ULI5281_OFFS		= 0x60, /* offset from sata0->sata1 phy regs */
};

struct uli_priv {
	unsigned int		scr_cfg_addr[uli_max_ports];
};

static int uli_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
static int uli_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
static int uli_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);

static const struct pci_device_id uli_pci_tbl[] = {
	{ PCI_VDEVICE(AL, 0x5289), uli_5289 },
	{ PCI_VDEVICE(AL, 0x5287), uli_5287 },
	{ PCI_VDEVICE(AL, 0x5281), uli_5281 },

	{ }	/* terminate list */
};

static struct pci_driver uli_pci_driver = {
	.name			= DRV_NAME,
	.id_table		= uli_pci_tbl,
	.probe			= uli_init_one,
	.remove			= ata_pci_remove_one,
};

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

static struct ata_port_operations uli_ops = {
	.inherits		= &ata_bmdma_port_ops,
	.scr_read		= uli_scr_read,
	.scr_write		= uli_scr_write,
	.hardreset		= ATA_OP_NULL,
};

static const struct ata_port_info uli_port_info = {
	.flags		= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
			  ATA_FLAG_IGN_SIMPLEX,
	.pio_mask       = ATA_PIO4,
	.udma_mask      = ATA_UDMA6,
	.port_ops       = &uli_ops,
};


MODULE_AUTHOR("Peer Chen");
MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, uli_pci_tbl);
MODULE_VERSION(DRV_VERSION);

static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg)
{
	struct uli_priv *hpriv = ap->host->private_data;
	return hpriv->scr_cfg_addr[ap->port_no] + (4 * sc_reg);
}

static u32 uli_scr_cfg_read(struct ata_link *link, unsigned int sc_reg)
{
	struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);
	unsigned int cfg_addr = get_scr_cfg_addr(link->ap, sc_reg);
	u32 val;

	pci_read_config_dword(pdev, cfg_addr, &val);
	return val;
}

static void uli_scr_cfg_write(struct ata_link *link, unsigned int scr, u32 val)
{
	struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);
	unsigned int cfg_addr = get_scr_cfg_addr(link->ap, scr);

	pci_write_config_dword(pdev, cfg_addr, val);
}

static int uli_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
{
	if (sc_reg > SCR_CONTROL)
		return -EINVAL;

	*val = uli_scr_cfg_read(link, sc_reg);
	return 0;
}

static int uli_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
{
	if (sc_reg > SCR_CONTROL) //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0
		return -EINVAL;

	uli_scr_cfg_write(link, sc_reg, val);
	return 0;
}

static int uli_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
	static int printed_version;
	const struct ata_port_info *ppi[] = { &uli_port_info, NULL };
	unsigned int board_idx = (unsigned int) ent->driver_data;
	struct ata_host *host;
	struct uli_priv *hpriv;
	void __iomem * const *iomap;
	struct ata_ioports *ioaddr;
	int n_ports, rc;

	if (!printed_version++)
		dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");

	rc = pcim_enable_device(pdev);
	if (rc)
		return rc;

	n_ports = 2;
	if (board_idx == uli_5287)
		n_ports = 4;

	/* allocate the host */
	host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
	if (!host)
		return -ENOMEM;

	hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
	if (!hpriv)
		return -ENOMEM;
	host->private_data = hpriv;

	/* the first two ports are standard SFF */
	rc = ata_pci_sff_init_host(host);
	if (rc)
		return rc;

	ata_pci_bmdma_init(host);

	iomap = host->iomap;

	switch (board_idx) {
	case uli_5287:
		/* If there are four, the last two live right after
		 * the standard SFF ports.
		 */
		hpriv->scr_cfg_addr[0] = ULI5287_BASE;
		hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;

		ioaddr = &host->ports[2]->ioaddr;
		ioaddr->cmd_addr = iomap[0] + 8;
		ioaddr->altstatus_addr =
		ioaddr->ctl_addr = (void __iomem *)
			((unsigned long)iomap[1] | ATA_PCI_CTL_OFS) + 4;
		ioaddr->bmdma_addr = iomap[4] + 16;
		hpriv->scr_cfg_addr[2] = ULI5287_BASE + ULI5287_OFFS*4;
		ata_sff_std_ports(ioaddr);

		ata_port_desc(host->ports[2],
			"cmd 0x%llx ctl 0x%llx bmdma 0x%llx",
			(unsigned long long)pci_resource_start(pdev, 0) + 8,
			((unsigned long long)pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS) + 4,
			(unsigned long long)pci_resource_start(pdev, 4) + 16);

		ioaddr = &host->ports[3]->ioaddr;
		ioaddr->cmd_addr = iomap[2] + 8;
		ioaddr->altstatus_addr =
		ioaddr->ctl_addr = (void __iomem *)
			((unsigned long)iomap[3] | ATA_PCI_CTL_OFS) + 4;
		ioaddr->bmdma_addr = iomap[4] + 24;
		hpriv->scr_cfg_addr[3] = ULI5287_BASE + ULI5287_OFFS*5;
		ata_sff_std_ports(ioaddr);

		ata_port_desc(host->ports[2],
			"cmd 0x%llx ctl 0x%llx bmdma 0x%llx",
			(unsigned long long)pci_resource_start(pdev, 2) + 9,
			((unsigned long long)pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS) + 4,
			(unsigned long long)pci_resource_start(pdev, 4) + 24);

		break;

	case uli_5289:
		hpriv->scr_cfg_addr[0] = ULI5287_BASE;
		hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
		break;

	case uli_5281:
		hpriv->scr_cfg_addr[0] = ULI5281_BASE;
		hpriv->scr_cfg_addr[1] = ULI5281_BASE + ULI5281_OFFS;
		break;

	default:
		BUG();
		break;
	}

	pci_set_master(pdev);
	pci_intx(pdev, 1);
	return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt,
				 IRQF_SHARED, &uli_sht);
}

static int __init uli_init(void)
{
	return pci_register_driver(&uli_pci_driver);
}

static void __exit uli_exit(void)
{
	pci_unregister_driver(&uli_pci_driver);
}


module_init(uli_init);
module_exit(uli_exit);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* sata_uli.c - ULi Electronics SATA
	3	*
af36d7f0 JG	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License as published by
	7	* the Free Software Foundation; either version 2, or (at your option)
	8	* any later version.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program; see the file COPYING. If not, write to
	17	* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
	18	*
	19	*
	20	* libata documentation is available via 'make {ps\|pdf}docs',
	21	* as Documentation/DocBook/libata.*
	22	*
	23	* Hardware documentation available under NDA.
1da177e4 LT	24	*
	25	*/
	26
1da177e4 LT	27	#include <linux/kernel.h>
1da177e4 LT	28	#include <linux/module.h>
5a0e3ad6	29	#include <linux/gfp.h>
1da177e4 LT	30	#include <linux/pci.h>
	31	#include <linux/init.h>
	32	#include <linux/blkdev.h>
	33	#include <linux/delay.h>
	34	#include <linux/interrupt.h>
a9524a76	35	#include <linux/device.h>
1da177e4 LT	36	#include <scsi/scsi_host.h>
	37	#include <linux/libata.h>
	38
	39	#define DRV_NAME "sata_uli"
2a3103ce	40	#define DRV_VERSION "1.3"
1da177e4 LT	41
	42	enum {
	43	uli_5289 = 0,
	44	uli_5287 = 1,
	45	uli_5281 = 2,
	46
50106c5a JG	47	uli_max_ports = 4,
50106c5a JG	48
1da177e4 LT	49	/* PCI configuration registers */
	50	ULI5287_BASE = 0x90, /* sata0 phy SCR registers */
	51	ULI5287_OFFS = 0x10, /* offset from sata0->sata1 phy regs */
	52	ULI5281_BASE = 0x60, /* sata0 phy SCR registers */
	53	ULI5281_OFFS = 0x60, /* offset from sata0->sata1 phy regs */
	54	};
	55
50106c5a JG	56	struct uli_priv {
	57	unsigned int scr_cfg_addr[uli_max_ports];
	58	};
	59
5796d1c4	60	static int uli_init_one(struct pci_dev pdev, const struct pci_device_id ent);
82ef04fb TH	61	static int uli_scr_read(struct ata_link link, unsigned int sc_reg, u32 val);
82ef04fb TH	62	static int uli_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
1da177e4	63
3b7d697d	64	static const struct pci_device_id uli_pci_tbl[] = {
54bb3a94 JG	65	{ PCI_VDEVICE(AL, 0x5289), uli_5289 },
	66	{ PCI_VDEVICE(AL, 0x5287), uli_5287 },
	67	{ PCI_VDEVICE(AL, 0x5281), uli_5281 },
	68
1da177e4 LT	69	{ } /* terminate list */
	70	};
	71
1da177e4 LT	72	static struct pci_driver uli_pci_driver = {
	73	.name = DRV_NAME,
	74	.id_table = uli_pci_tbl,
	75	.probe = uli_init_one,
	76	.remove = ata_pci_remove_one,
	77	};
	78
193515d5	79	static struct scsi_host_template uli_sht = {
68d1d07b	80	ATA_BMDMA_SHT(DRV_NAME),
1da177e4 LT	81	};
1da177e4 LT	82
029cfd6b TH	83	static struct ata_port_operations uli_ops = {
029cfd6b TH	84	.inherits = &ata_bmdma_port_ops,
1da177e4 LT	85	.scr_read = uli_scr_read,
1da177e4 LT	86	.scr_write = uli_scr_write,
70a3143a	87	.hardreset = ATA_OP_NULL,
1da177e4 LT	88	};
1da177e4 LT	89
1626aeb8	90	static const struct ata_port_info uli_port_info = {
b2a8bbe6 TH	91	.flags = ATA_FLAG_SATA \| ATA_FLAG_NO_LEGACY \|
b2a8bbe6 TH	92	ATA_FLAG_IGN_SIMPLEX,
14bdef98	93	.pio_mask = ATA_PIO4,
bf6263a8	94	.udma_mask = ATA_UDMA6,
1da177e4 LT	95	.port_ops = &uli_ops,
	96	};
	97
	98
	99	MODULE_AUTHOR("Peer Chen");
	100	MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller");
	101	MODULE_LICENSE("GPL");
	102	MODULE_DEVICE_TABLE(pci, uli_pci_tbl);
	103	MODULE_VERSION(DRV_VERSION);
	104
	105	static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg)
	106	{
cca3974e	107	struct uli_priv *hpriv = ap->host->private_data;
50106c5a	108	return hpriv->scr_cfg_addr[ap->port_no] + (4 * sc_reg);
1da177e4 LT	109	}
1da177e4 LT	110
82ef04fb	111	static u32 uli_scr_cfg_read(struct ata_link *link, unsigned int sc_reg)
1da177e4	112	{
82ef04fb TH	113	struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);
82ef04fb TH	114	unsigned int cfg_addr = get_scr_cfg_addr(link->ap, sc_reg);
1da177e4 LT	115	u32 val;
	116
	117	pci_read_config_dword(pdev, cfg_addr, &val);
	118	return val;
	119	}
	120
82ef04fb	121	static void uli_scr_cfg_write(struct ata_link *link, unsigned int scr, u32 val)
1da177e4	122	{
82ef04fb TH	123	struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);
82ef04fb TH	124	unsigned int cfg_addr = get_scr_cfg_addr(link->ap, scr);
1da177e4 LT	125
	126	pci_write_config_dword(pdev, cfg_addr, val);
	127	}
	128
82ef04fb	129	static int uli_scr_read(struct ata_link link, unsigned int sc_reg, u32 val)
1da177e4 LT	130	{
1da177e4 LT	131	if (sc_reg > SCR_CONTROL)
da3dbb17	132	return -EINVAL;
1da177e4	133
82ef04fb	134	*val = uli_scr_cfg_read(link, sc_reg);
da3dbb17	135	return 0;
1da177e4 LT	136	}
1da177e4 LT	137
82ef04fb	138	static int uli_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
1da177e4	139	{
5796d1c4	140	if (sc_reg > SCR_CONTROL) //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0
da3dbb17	141	return -EINVAL;
1da177e4	142
82ef04fb	143	uli_scr_cfg_write(link, sc_reg, val);
da3dbb17	144	return 0;
1da177e4 LT	145	}
1da177e4 LT	146
5796d1c4	147	static int uli_init_one(struct pci_dev pdev, const struct pci_device_id ent)
1da177e4	148	{
a9524a76	149	static int printed_version;
9a829ccf	150	const struct ata_port_info *ppi[] = { &uli_port_info, NULL };
1da177e4	151	unsigned int board_idx = (unsigned int) ent->driver_data;
9a829ccf	152	struct ata_host *host;
50106c5a	153	struct uli_priv *hpriv;
0d5ff566	154	void __iomem * const *iomap;
9a829ccf TH	155	struct ata_ioports *ioaddr;
9a829ccf TH	156	int n_ports, rc;
1da177e4	157
a9524a76 JG	158	if (!printed_version++)
	159	dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
	160
24dc5f33	161	rc = pcim_enable_device(pdev);
1da177e4 LT	162	if (rc)
	163	return rc;
	164
9a829ccf TH	165	n_ports = 2;
	166	if (board_idx == uli_5287)
	167	n_ports = 4;
1626aeb8 TH	168
	169	/* allocate the host */
	170	host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
	171	if (!host)
	172	return -ENOMEM;
1da177e4	173
24dc5f33 TH	174	hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
	175	if (!hpriv)
	176	return -ENOMEM;
9a829ccf	177	host->private_data = hpriv;
50106c5a	178
1626aeb8	179	/* the first two ports are standard SFF */
9363c382	180	rc = ata_pci_sff_init_host(host);
1626aeb8 TH	181	if (rc)
	182	return rc;
	183
c7087652	184	ata_pci_bmdma_init(host);
1626aeb8	185
9a829ccf	186	iomap = host->iomap;
0d5ff566	187
1da177e4 LT	188	switch (board_idx) {
1da177e4 LT	189	case uli_5287:
1626aeb8 TH	190	/* If there are four, the last two live right after
	191	* the standard SFF ports.
	192	*/
50106c5a JG	193	hpriv->scr_cfg_addr[0] = ULI5287_BASE;
50106c5a JG	194	hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
1da177e4	195
9a829ccf TH	196	ioaddr = &host->ports[2]->ioaddr;
	197	ioaddr->cmd_addr = iomap[0] + 8;
	198	ioaddr->altstatus_addr =
	199	ioaddr->ctl_addr = (void __iomem *)
0d5ff566	200	((unsigned long)iomap[1] \| ATA_PCI_CTL_OFS) + 4;
9a829ccf	201	ioaddr->bmdma_addr = iomap[4] + 16;
50106c5a	202	hpriv->scr_cfg_addr[2] = ULI5287_BASE + ULI5287_OFFS*4;
9363c382	203	ata_sff_std_ports(ioaddr);
1da177e4	204
cbcdd875 TH	205	ata_port_desc(host->ports[2],
	206	"cmd 0x%llx ctl 0x%llx bmdma 0x%llx",
	207	(unsigned long long)pci_resource_start(pdev, 0) + 8,
	208	((unsigned long long)pci_resource_start(pdev, 1) \| ATA_PCI_CTL_OFS) + 4,
	209	(unsigned long long)pci_resource_start(pdev, 4) + 16);
	210
9a829ccf TH	211	ioaddr = &host->ports[3]->ioaddr;
	212	ioaddr->cmd_addr = iomap[2] + 8;
	213	ioaddr->altstatus_addr =
	214	ioaddr->ctl_addr = (void __iomem *)
0d5ff566	215	((unsigned long)iomap[3] \| ATA_PCI_CTL_OFS) + 4;
9a829ccf	216	ioaddr->bmdma_addr = iomap[4] + 24;
50106c5a	217	hpriv->scr_cfg_addr[3] = ULI5287_BASE + ULI5287_OFFS*5;
9363c382	218	ata_sff_std_ports(ioaddr);
cbcdd875 TH	219
	220	ata_port_desc(host->ports[2],
	221	"cmd 0x%llx ctl 0x%llx bmdma 0x%llx",
	222	(unsigned long long)pci_resource_start(pdev, 2) + 9,
	223	((unsigned long long)pci_resource_start(pdev, 3) \| ATA_PCI_CTL_OFS) + 4,
	224	(unsigned long long)pci_resource_start(pdev, 4) + 24);
	225
1da177e4 LT	226	break;
	227
	228	case uli_5289:
50106c5a JG	229	hpriv->scr_cfg_addr[0] = ULI5287_BASE;
50106c5a JG	230	hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
1da177e4 LT	231	break;
	232
	233	case uli_5281:
50106c5a JG	234	hpriv->scr_cfg_addr[0] = ULI5281_BASE;
50106c5a JG	235	hpriv->scr_cfg_addr[1] = ULI5281_BASE + ULI5281_OFFS;
1da177e4 LT	236	break;
	237
	238	default:
	239	BUG();
	240	break;
	241	}
	242
	243	pci_set_master(pdev);
a04ce0ff	244	pci_intx(pdev, 1);
c3b28894	245	return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt,
9363c382	246	IRQF_SHARED, &uli_sht);
1da177e4 LT	247	}
	248
	249	static int __init uli_init(void)
	250	{
b7887196	251	return pci_register_driver(&uli_pci_driver);
1da177e4 LT	252	}
	253
	254	static void __exit uli_exit(void)
	255	{
	256	pci_unregister_driver(&uli_pci_driver);
	257	}
	258
	259
	260	module_init(uli_init);
	261	module_exit(uli_exit);