drivers/ata/sata_uli.c



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/*
 *  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/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)
{