[linux.git] / drivers / scsi / sata_via.c

/*
 *  sata_via.c - VIA Serial ATA controllers
 *
 *  Maintained by:  Jeff Garzik <[email protected]>
 * 		   Please ALWAYS copy [email protected]
 		   on emails.
 *
 *  Copyright 2003-2004 Red Hat, Inc.  All rights reserved.
 *  Copyright 2003-2004 Jeff Garzik
 *
 *
 *  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.
 *
 *
 *  To-do list:
 *  - VT6421 PATA support
 *
 */

#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 <asm/io.h>

#define DRV_NAME	"sata_via"
#define DRV_VERSION	"1.2"

enum board_ids_enum {
	vt6420,
	vt6421,
};

enum {
	SATA_CHAN_ENAB		= 0x40, /* SATA channel enable */
	SATA_INT_GATE		= 0x41, /* SATA interrupt gating */
	SATA_NATIVE_MODE	= 0x42, /* Native mode enable */
	SATA_PATA_SHARING	= 0x49, /* PATA/SATA sharing func ctrl */

	PORT0			= (1 << 1),
	PORT1			= (1 << 0),
	ALL_PORTS		= PORT0 | PORT1,
	N_PORTS			= 2,

	NATIVE_MODE_ALL		= (1 << 7) | (1 << 6) | (1 << 5) | (1 << 4),

	SATA_EXT_PHY		= (1 << 6), /* 0==use PATA, 1==ext phy */
	SATA_2DEV		= (1 << 5), /* SATA is master/slave */
};

static int svia_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
static u32 svia_scr_read (struct ata_port *ap, unsigned int sc_reg);
static void svia_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);

static const struct pci_device_id svia_pci_tbl[] = {
	{ 0x1106, 0x3149, PCI_ANY_ID, PCI_ANY_ID, 0, 0, vt6420 },
	{ 0x1106, 0x3249, PCI_ANY_ID, PCI_ANY_ID, 0, 0, vt6421 },

	{ }	/* terminate list */
};

static struct pci_driver svia_pci_driver = {
	.name			= DRV_NAME,
	.id_table		= svia_pci_tbl,
	.probe			= svia_init_one,
	.remove			= ata_pci_remove_one,
};

static struct scsi_host_template svia_sht = {
	.module			= THIS_MODULE,
	.name			= DRV_NAME,
	.ioctl			= ata_scsi_ioctl,
	.queuecommand		= ata_scsi_queuecmd,
	.eh_strategy_handler	= ata_scsi_error,
	.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,
	.bios_param		= ata_std_bios_param,
};

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

	.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,

	.phy_reset		= sata_phy_reset,

	.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,

	.eng_timeout		= ata_eng_timeout,

	.irq_handler		= ata_interrupt,
	.irq_clear		= ata_bmdma_irq_clear,

	.scr_read		= svia_scr_read,
	.scr_write		= svia_scr_write,

	.port_start		= ata_port_start,
	.port_stop		= ata_port_stop,
	.host_stop		= ata_host_stop,
};

static struct ata_port_info svia_port_info = {
	.sht		= &svia_sht,
	.host_flags	= ATA_FLAG_SATA | ATA_FLAG_SRST | ATA_FLAG_NO_LEGACY,
	.pio_mask	= 0x1f,
	.mwdma_mask	= 0x07,
	.udma_mask	= 0x7f,
	.port_ops	= &svia_sata_ops,
};

MODULE_AUTHOR("Jeff Garzik");
MODULE_DESCRIPTION("SCSI low-level driver for VIA SATA controllers");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, svia_pci_tbl);
MODULE_VERSION(DRV_VERSION);

static u32 svia_scr_read (struct ata_port *ap, unsigned int sc_reg)
{
	if (sc_reg > SCR_CONTROL)
		return 0xffffffffU;
	return inl(ap->ioaddr.scr_addr + (4 * sc_reg));
}

static void svia_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
{
	if (sc_reg > SCR_CONTROL)
		return;
	outl(val, ap->ioaddr.scr_addr + (4 * sc_reg));
}

static const unsigned int svia_bar_sizes[] = {
	8, 4, 8, 4, 16, 256
};

static const unsigned int vt6421_bar_sizes[] = {
	16, 16, 16, 16, 32, 128
};

static unsigned long svia_scr_addr(unsigned long addr, unsigned int port)
{
	return addr + (port * 128);
}

static unsigned long vt6421_scr_addr(unsigned long addr, unsigned int port)
{
	return addr + (port * 64);
}

static void vt6421_init_addrs(struct ata_probe_ent *probe_ent,
			      struct pci_dev *pdev,
			      unsigned int port)
{
	unsigned long reg_addr = pci_resource_start(pdev, port);
	unsigned long bmdma_addr = pci_resource_start(pdev, 4) + (port * 8);
	unsigned long scr_addr;

	probe_ent->port[port].cmd_addr = reg_addr;
	probe_ent->port[port].altstatus_addr =
	probe_ent->port[port].ctl_addr = (reg_addr + 8) | ATA_PCI_CTL_OFS;
	probe_ent->port[port].bmdma_addr = bmdma_addr;

	scr_addr = vt6421_scr_addr(pci_resource_start(pdev, 5), port);
	probe_ent->port[port].scr_addr = scr_addr;

	ata_std_ports(&probe_ent->port[port]);
}

static struct ata_probe_ent *vt6420_init_probe_ent(struct pci_dev *pdev)
{
	struct ata_probe_ent *probe_ent;
	struct ata_port_info *ppi = &svia_port_info;

	probe_ent = ata_pci_init_native_mode(pdev, &ppi, ATA_PORT_PRIMARY | ATA_PORT_SECONDARY);
	if (!probe_ent)
		return NULL;

	probe_ent->port[0].scr_addr =
		svia_scr_addr(pci_resource_start(pdev, 5), 0);
	probe_ent->port[1].scr_addr =
		svia_scr_addr(pci_resource_start(pdev, 5), 1);

	return probe_ent;
}

static struct ata_probe_ent *vt6421_init_probe_ent(struct pci_dev *pdev)
{
	struct ata_probe_ent *probe_ent;
	unsigned int i;

	probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
	if (!probe_ent)
		return NULL;

	memset(probe_ent, 0, sizeof(*probe_ent));
	probe_ent->dev = pci_dev_to_dev(pdev);
	INIT_LIST_HEAD(&probe_ent->node);

	probe_ent->sht		= &svia_sht;
	probe_ent->host_flags	= ATA_FLAG_SATA | ATA_FLAG_SATA_RESET |
				  ATA_FLAG_NO_LEGACY;
	probe_ent->port_ops	= &svia_sata_ops;
	probe_ent->n_ports	= N_PORTS;
	probe_ent->irq		= pdev->irq;
	probe_ent->irq_flags	= SA_SHIRQ;
	probe_ent->pio_mask	= 0x1f;
	probe_ent->mwdma_mask	= 0x07;
	probe_ent->udma_mask	= 0x7f;

	for (i = 0; i < N_PORTS; i++)
		vt6421_init_addrs(probe_ent, pdev, i);

	return probe_ent;
}

static void svia_configure(struct pci_dev *pdev)
{
	u8 tmp8;

	pci_read_config_byte(pdev, PCI_INTERRUPT_LINE, &tmp8);
	dev_printk(KERN_INFO, &pdev->dev, "routed to hard irq line %d\n",
	       (int) (tmp8 & 0xf0) == 0xf0 ? 0 : tmp8 & 0x0f);

	/* make sure SATA channels are enabled */
	pci_read_config_byte(pdev, SATA_CHAN_ENAB, &tmp8);
	if ((tmp8 & ALL_PORTS) != ALL_PORTS) {
		dev_printk(KERN_DEBUG, &pdev->dev,
			   "enabling SATA channels (0x%x)\n",
		           (int) tmp8);
		tmp8 |= ALL_PORTS;
		pci_write_config_byte(pdev, SATA_CHAN_ENAB, tmp8);
	}

	/* make sure interrupts for each channel sent to us */
	pci_read_config_byte(pdev, SATA_INT_GATE, &tmp8);
	if ((tmp8 & ALL_PORTS) != ALL_PORTS) {
		dev_printk(KERN_DEBUG, &pdev->dev,
			   "enabling SATA channel interrupts (0x%x)\n",
		           (int) tmp8);
		tmp8 |= ALL_PORTS;
		pci_write_config_byte(pdev, SATA_INT_GATE, tmp8);
	}

	/* make sure native mode is enabled */
	pci_read_config_byte(pdev, SATA_NATIVE_MODE, &tmp8);
	if ((tmp8 & NATIVE_MODE_ALL) != NATIVE_MODE_ALL) {
		dev_printk(KERN_DEBUG, &pdev->dev,
			   "enabling SATA channel native mode (0x%x)\n",
		           (int) tmp8);
		tmp8 |= NATIVE_MODE_ALL;
		pci_write_config_byte(pdev, SATA_NATIVE_MODE, tmp8);
	}
}

static int svia_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
{
	static int printed_version;
	unsigned int i;
	int rc;
	struct ata_probe_ent *probe_ent;
	int board_id = (int) ent->driver_data;
	const int *bar_sizes;
	int pci_dev_busy = 0;
	u8 tmp8;

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

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

	rc = pci_request_regions(pdev, DRV_NAME);
	if (rc) {
		pci_dev_busy = 1;
		goto err_out;
	}

	if (board_id == vt6420) {
		pci_read_config_byte(pdev, SATA_PATA_SHARING, &tmp8);
		if (tmp8 & SATA_2DEV) {
			dev_printk(KERN_ERR, &pdev->dev,
				   "SATA master/slave not supported (0x%x)\n",
		       		   (int) tmp8);
			rc = -EIO;
			goto err_out_regions;
		}

		bar_sizes = &svia_bar_sizes[0];
	} else {
		bar_sizes = &vt6421_bar_sizes[0];
	}

	for (i = 0; i < ARRAY_SIZE(svia_bar_sizes); i++)
		if ((pci_resource_start(pdev, i) == 0) ||
		    (pci_resource_len(pdev, i) < bar_sizes[i])) {
			dev_printk(KERN_ERR, &pdev->dev,
				   "invalid PCI BAR %u (sz 0x%lx, val 0x%lx)\n",
				   i,
			           pci_resource_start(pdev, i),
			           pci_resource_len(pdev, i));
			rc = -ENODEV;
			goto err_out_regions;
		}

	rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
	if (rc)
		goto err_out_regions;
	rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
	if (rc)
		goto err_out_regions;

	if (board_id == vt6420)
		probe_ent = vt6420_init_probe_ent(pdev);
	else
		probe_ent = vt6421_init_probe_ent(pdev);

	if (!probe_ent) {
		dev_printk(KERN_ERR, &pdev->dev, "out of memory\n");
		rc = -ENOMEM;
		goto err_out_regions;
	}

	svia_configure(pdev);

	pci_set_master(pdev);

	/* FIXME: check ata_device_add return value */
	ata_device_add(probe_ent);
	kfree(probe_ent);

	return 0;

err_out_regions:
	pci_release_regions(pdev);
err_out:
	if (!pci_dev_busy)
		pci_disable_device(pdev);
	return rc;
}

static int __init svia_init(void)
{
	return pci_module_init(&svia_pci_driver);
}

static void __exit svia_exit(void)
{
	pci_unregister_driver(&svia_pci_driver);
}

module_init(svia_init);
module_exit(svia_exit);
Commit	Line	Data
1da177e4	1	/*
af36d7f0 JG	2	* sata_via.c - VIA Serial ATA controllers
	3	*
	4	* Maintained by: Jeff Garzik <[email protected]>
	5	* Please ALWAYS copy [email protected]
1da177e4	6	on emails.
af36d7f0 JG	7	*
	8	* Copyright 2003-2004 Red Hat, Inc. All rights reserved.
	9	* Copyright 2003-2004 Jeff Garzik
	10	*
	11	*
	12	* This program is free software; you can redistribute it and/or modify
	13	* it under the terms of the GNU General Public License as published by
	14	* the Free Software Foundation; either version 2, or (at your option)
	15	* any later version.
	16	*
	17	* This program is distributed in the hope that it will be useful,
	18	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	20	* GNU General Public License for more details.
	21	*
	22	* You should have received a copy of the GNU General Public License
	23	* along with this program; see the file COPYING. If not, write to
	24	* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
	25	*
	26	*
	27	* libata documentation is available via 'make {ps\|pdf}docs',
	28	* as Documentation/DocBook/libata.*
	29	*
	30	* Hardware documentation available under NDA.
	31	*
	32	*
	33	* To-do list:
	34	* - VT6421 PATA support
	35	*
1da177e4 LT	36	*/
	37
	38	#include <linux/kernel.h>
	39	#include <linux/module.h>
	40	#include <linux/pci.h>
	41	#include <linux/init.h>
	42	#include <linux/blkdev.h>
	43	#include <linux/delay.h>
a9524a76	44	#include <linux/device.h>
1da177e4 LT	45	#include <scsi/scsi_host.h>
	46	#include <linux/libata.h>
	47	#include <asm/io.h>
	48
	49	#define DRV_NAME "sata_via"
af64371a	50	#define DRV_VERSION "1.2"
1da177e4 LT	51
	52	enum board_ids_enum {
	53	vt6420,
	54	vt6421,
	55	};
	56
	57	enum {
	58	SATA_CHAN_ENAB = 0x40, /* SATA channel enable */
	59	SATA_INT_GATE = 0x41, /* SATA interrupt gating */
	60	SATA_NATIVE_MODE = 0x42, /* Native mode enable */
	61	SATA_PATA_SHARING = 0x49, /* PATA/SATA sharing func ctrl */
	62
	63	PORT0 = (1 << 1),
	64	PORT1 = (1 << 0),
	65	ALL_PORTS = PORT0 \| PORT1,
	66	N_PORTS = 2,
	67
	68	NATIVE_MODE_ALL = (1 << 7) \| (1 << 6) \| (1 << 5) \| (1 << 4),
	69
	70	SATA_EXT_PHY = (1 << 6), /* 0==use PATA, 1==ext phy */
	71	SATA_2DEV = (1 << 5), /* SATA is master/slave */
	72	};
	73
	74	static int svia_init_one (struct pci_dev pdev, const struct pci_device_id ent);
	75	static u32 svia_scr_read (struct ata_port *ap, unsigned int sc_reg);
	76	static void svia_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
	77
3b7d697d	78	static const struct pci_device_id svia_pci_tbl[] = {
1da177e4 LT	79	{ 0x1106, 0x3149, PCI_ANY_ID, PCI_ANY_ID, 0, 0, vt6420 },
	80	{ 0x1106, 0x3249, PCI_ANY_ID, PCI_ANY_ID, 0, 0, vt6421 },
	81
	82	{ } /* terminate list */
	83	};
	84
	85	static struct pci_driver svia_pci_driver = {
	86	.name = DRV_NAME,
	87	.id_table = svia_pci_tbl,
	88	.probe = svia_init_one,
	89	.remove = ata_pci_remove_one,
	90	};
	91
193515d5	92	static struct scsi_host_template svia_sht = {
1da177e4 LT	93	.module = THIS_MODULE,
	94	.name = DRV_NAME,
	95	.ioctl = ata_scsi_ioctl,
	96	.queuecommand = ata_scsi_queuecmd,
	97	.eh_strategy_handler = ata_scsi_error,
	98	.can_queue = ATA_DEF_QUEUE,
	99	.this_id = ATA_SHT_THIS_ID,
	100	.sg_tablesize = LIBATA_MAX_PRD,
1da177e4 LT	101	.cmd_per_lun = ATA_SHT_CMD_PER_LUN,
	102	.emulated = ATA_SHT_EMULATED,
	103	.use_clustering = ATA_SHT_USE_CLUSTERING,
	104	.proc_name = DRV_NAME,
	105	.dma_boundary = ATA_DMA_BOUNDARY,
	106	.slave_configure = ata_scsi_slave_config,
	107	.bios_param = ata_std_bios_param,
1da177e4 LT	108	};
1da177e4 LT	109
057ace5e	110	static const struct ata_port_operations svia_sata_ops = {
1da177e4 LT	111	.port_disable = ata_port_disable,
	112
	113	.tf_load = ata_tf_load,
	114	.tf_read = ata_tf_read,
	115	.check_status = ata_check_status,
	116	.exec_command = ata_exec_command,
	117	.dev_select = ata_std_dev_select,
	118
	119	.phy_reset = sata_phy_reset,
	120
	121	.bmdma_setup = ata_bmdma_setup,
	122	.bmdma_start = ata_bmdma_start,
	123	.bmdma_stop = ata_bmdma_stop,
	124	.bmdma_status = ata_bmdma_status,
	125
	126	.qc_prep = ata_qc_prep,
	127	.qc_issue = ata_qc_issue_prot,
	128
	129	.eng_timeout = ata_eng_timeout,
	130
	131	.irq_handler = ata_interrupt,
	132	.irq_clear = ata_bmdma_irq_clear,
	133
	134	.scr_read = svia_scr_read,
	135	.scr_write = svia_scr_write,
	136
	137	.port_start = ata_port_start,
	138	.port_stop = ata_port_stop,
aa8f0dc6	139	.host_stop = ata_host_stop,
1da177e4 LT	140	};
	141
	142	static struct ata_port_info svia_port_info = {
	143	.sht = &svia_sht,
	144	.host_flags = ATA_FLAG_SATA \| ATA_FLAG_SRST \| ATA_FLAG_NO_LEGACY,
	145	.pio_mask = 0x1f,
	146	.mwdma_mask = 0x07,
	147	.udma_mask = 0x7f,
	148	.port_ops = &svia_sata_ops,
	149	};
	150
	151	MODULE_AUTHOR("Jeff Garzik");
	152	MODULE_DESCRIPTION("SCSI low-level driver for VIA SATA controllers");
	153	MODULE_LICENSE("GPL");
	154	MODULE_DEVICE_TABLE(pci, svia_pci_tbl);
	155	MODULE_VERSION(DRV_VERSION);
	156
	157	static u32 svia_scr_read (struct ata_port *ap, unsigned int sc_reg)
	158	{
	159	if (sc_reg > SCR_CONTROL)
	160	return 0xffffffffU;
	161	return inl(ap->ioaddr.scr_addr + (4 * sc_reg));
	162	}
	163
	164	static void svia_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
	165	{
	166	if (sc_reg > SCR_CONTROL)
	167	return;
	168	outl(val, ap->ioaddr.scr_addr + (4 * sc_reg));
	169	}
	170
	171	static const unsigned int svia_bar_sizes[] = {
	172	8, 4, 8, 4, 16, 256
	173	};
	174
	175	static const unsigned int vt6421_bar_sizes[] = {
	176	16, 16, 16, 16, 32, 128
	177	};
	178
	179	static unsigned long svia_scr_addr(unsigned long addr, unsigned int port)
	180	{
	181	return addr + (port * 128);
	182	}
	183
	184	static unsigned long vt6421_scr_addr(unsigned long addr, unsigned int port)
	185	{
	186	return addr + (port * 64);
	187	}
	188
	189	static void vt6421_init_addrs(struct ata_probe_ent *probe_ent,
	190	struct pci_dev *pdev,
	191	unsigned int port)
	192	{
	193	unsigned long reg_addr = pci_resource_start(pdev, port);
	194	unsigned long bmdma_addr = pci_resource_start(pdev, 4) + (port * 8);
	195	unsigned long scr_addr;
	196
	197	probe_ent->port[port].cmd_addr = reg_addr;
	198	probe_ent->port[port].altstatus_addr =
	199	probe_ent->port[port].ctl_addr = (reg_addr + 8) \| ATA_PCI_CTL_OFS;
	200	probe_ent->port[port].bmdma_addr = bmdma_addr;
	201
	202	scr_addr = vt6421_scr_addr(pci_resource_start(pdev, 5), port);
	203	probe_ent->port[port].scr_addr = scr_addr;
204
205	ata_std_ports(&probe_ent->port[port]);
206	}
207
208	static struct ata_probe_ent vt6420_init_probe_ent(struct pci_dev pdev)
209	{
210	struct ata_probe_ent *probe_ent;
211	struct ata_port_info *ppi = &svia_port_info;
212
47a86593	213	probe_ent = ata_pci_init_native_mode(pdev, &ppi, ATA_PORT_PRIMARY \| ATA_PORT_SECONDARY);
1da177e4 LT	214	if (!probe_ent)
	215	return NULL;
	216
	217	probe_ent->port[0].scr_addr =
	218	svia_scr_addr(pci_resource_start(pdev, 5), 0);
	219	probe_ent->port[1].scr_addr =
	220	svia_scr_addr(pci_resource_start(pdev, 5), 1);
	221
	222	return probe_ent;
	223	}
	224
	225	static struct ata_probe_ent vt6421_init_probe_ent(struct pci_dev pdev)
	226	{
	227	struct ata_probe_ent *probe_ent;
	228	unsigned int i;
	229
	230	probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
	231	if (!probe_ent)
	232	return NULL;
	233
	234	memset(probe_ent, 0, sizeof(*probe_ent));
	235	probe_ent->dev = pci_dev_to_dev(pdev);
	236	INIT_LIST_HEAD(&probe_ent->node);
	237
	238	probe_ent->sht = &svia_sht;
	239	probe_ent->host_flags = ATA_FLAG_SATA \| ATA_FLAG_SATA_RESET \|
	240	ATA_FLAG_NO_LEGACY;
	241	probe_ent->port_ops = &svia_sata_ops;
	242	probe_ent->n_ports = N_PORTS;
	243	probe_ent->irq = pdev->irq;
	244	probe_ent->irq_flags = SA_SHIRQ;
	245	probe_ent->pio_mask = 0x1f;
	246	probe_ent->mwdma_mask = 0x07;
	247	probe_ent->udma_mask = 0x7f;
	248
	249	for (i = 0; i < N_PORTS; i++)
	250	vt6421_init_addrs(probe_ent, pdev, i);
	251
	252	return probe_ent;
	253	}
	254
	255	static void svia_configure(struct pci_dev *pdev)
	256	{
	257	u8 tmp8;
	258
	259	pci_read_config_byte(pdev, PCI_INTERRUPT_LINE, &tmp8);
a9524a76	260	dev_printk(KERN_INFO, &pdev->dev, "routed to hard irq line %d\n",
1da177e4 LT	261	(int) (tmp8 & 0xf0) == 0xf0 ? 0 : tmp8 & 0x0f);
	262
	263	/* make sure SATA channels are enabled */
	264	pci_read_config_byte(pdev, SATA_CHAN_ENAB, &tmp8);
	265	if ((tmp8 & ALL_PORTS) != ALL_PORTS) {
a9524a76 JG	266	dev_printk(KERN_DEBUG, &pdev->dev,
	267	"enabling SATA channels (0x%x)\n",
	268	(int) tmp8);
1da177e4 LT	269	tmp8 \|= ALL_PORTS;
	270	pci_write_config_byte(pdev, SATA_CHAN_ENAB, tmp8);
	271	}
	272
	273	/* make sure interrupts for each channel sent to us */
	274	pci_read_config_byte(pdev, SATA_INT_GATE, &tmp8);
	275	if ((tmp8 & ALL_PORTS) != ALL_PORTS) {
a9524a76 JG	276	dev_printk(KERN_DEBUG, &pdev->dev,
	277	"enabling SATA channel interrupts (0x%x)\n",
	278	(int) tmp8);
1da177e4 LT	279	tmp8 \|= ALL_PORTS;
	280	pci_write_config_byte(pdev, SATA_INT_GATE, tmp8);
	281	}
	282
	283	/* make sure native mode is enabled */
	284	pci_read_config_byte(pdev, SATA_NATIVE_MODE, &tmp8);
	285	if ((tmp8 & NATIVE_MODE_ALL) != NATIVE_MODE_ALL) {
a9524a76 JG	286	dev_printk(KERN_DEBUG, &pdev->dev,
	287	"enabling SATA channel native mode (0x%x)\n",
	288	(int) tmp8);
1da177e4 LT	289	tmp8 \|= NATIVE_MODE_ALL;
	290	pci_write_config_byte(pdev, SATA_NATIVE_MODE, tmp8);
	291	}
	292	}
	293
	294	static int svia_init_one (struct pci_dev pdev, const struct pci_device_id ent)
	295	{
	296	static int printed_version;
	297	unsigned int i;
	298	int rc;
	299	struct ata_probe_ent *probe_ent;
	300	int board_id = (int) ent->driver_data;
	301	const int *bar_sizes;
	302	int pci_dev_busy = 0;
	303	u8 tmp8;
	304
	305	if (!printed_version++)
a9524a76	306	dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
1da177e4 LT	307
	308	rc = pci_enable_device(pdev);
	309	if (rc)
	310	return rc;
	311
	312	rc = pci_request_regions(pdev, DRV_NAME);
	313	if (rc) {
	314	pci_dev_busy = 1;
	315	goto err_out;
	316	}
	317
	318	if (board_id == vt6420) {
	319	pci_read_config_byte(pdev, SATA_PATA_SHARING, &tmp8);
	320	if (tmp8 & SATA_2DEV) {
a9524a76 JG	321	dev_printk(KERN_ERR, &pdev->dev,
	322	"SATA master/slave not supported (0x%x)\n",
	323	(int) tmp8);
1da177e4 LT	324	rc = -EIO;
	325	goto err_out_regions;
	326	}
	327
	328	bar_sizes = &svia_bar_sizes[0];
	329	} else {
	330	bar_sizes = &vt6421_bar_sizes[0];
	331	}
	332
	333	for (i = 0; i < ARRAY_SIZE(svia_bar_sizes); i++)
	334	if ((pci_resource_start(pdev, i) == 0) \|\|
	335	(pci_resource_len(pdev, i) < bar_sizes[i])) {
a9524a76 JG	336	dev_printk(KERN_ERR, &pdev->dev,
	337	"invalid PCI BAR %u (sz 0x%lx, val 0x%lx)\n",
	338	i,
	339	pci_resource_start(pdev, i),
	340	pci_resource_len(pdev, i));
1da177e4 LT	341	rc = -ENODEV;
	342	goto err_out_regions;
	343	}
	344
	345	rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
	346	if (rc)
	347	goto err_out_regions;
	348	rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
	349	if (rc)
	350	goto err_out_regions;
	351
	352	if (board_id == vt6420)
	353	probe_ent = vt6420_init_probe_ent(pdev);
	354	else
	355	probe_ent = vt6421_init_probe_ent(pdev);
8a60a071	356
1da177e4	357	if (!probe_ent) {
a9524a76	358	dev_printk(KERN_ERR, &pdev->dev, "out of memory\n");
1da177e4 LT	359	rc = -ENOMEM;
	360	goto err_out_regions;
	361	}
	362
	363	svia_configure(pdev);
	364
	365	pci_set_master(pdev);
	366
	367	/* FIXME: check ata_device_add return value */
	368	ata_device_add(probe_ent);
	369	kfree(probe_ent);
	370
	371	return 0;
	372
	373	err_out_regions:
	374	pci_release_regions(pdev);
	375	err_out:
	376	if (!pci_dev_busy)
	377	pci_disable_device(pdev);
	378	return rc;
	379	}
	380
	381	static int __init svia_init(void)
	382	{
	383	return pci_module_init(&svia_pci_driver);
	384	}
	385
	386	static void __exit svia_exit(void)
	387	{
	388	pci_unregister_driver(&svia_pci_driver);
	389	}
	390
	391	module_init(svia_init);
	392	module_exit(svia_exit);
	393