Move libata to drivers/ata.

1 files changed, 0 insertions, 730 deletions

diff --git a/drivers/scsi/sata_qstor.c b/drivers/scsi/sata_qstor.c
deleted file mode 100644
index 71bd6712b377..000000000000
--- a/drivers/scsi/sata_qstor.c
+++ /dev/null
@@ -1,730 +0,0 @@
-/*
- *  sata_qstor.c - Pacific Digital Corporation QStor SATA
- *
- *  Maintained by:  Mark Lord <mlord@pobox.com>
- *
- *  Copyright 2005 Pacific Digital Corporation.
- *  (OSL/GPL code release authorized by Jalil Fadavi).
- *
- *
- *  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.*
- *
- */
-
-#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/sched.h>
-#include <linux/device.h>
-#include <scsi/scsi_host.h>
-#include <asm/io.h>
-#include <linux/libata.h>
-
-#define DRV_NAME	"sata_qstor"
-#define DRV_VERSION	"0.06"
-
-enum {
-	QS_PORTS		= 4,
-	QS_MAX_PRD		= LIBATA_MAX_PRD,
-	QS_CPB_ORDER		= 6,
-	QS_CPB_BYTES		= (1 << QS_CPB_ORDER),
-	QS_PRD_BYTES		= QS_MAX_PRD * 16,
-	QS_PKT_BYTES		= QS_CPB_BYTES + QS_PRD_BYTES,
-
-	/* global register offsets */
-	QS_HCF_CNFG3		= 0x0003, /* host configuration offset */
-	QS_HID_HPHY		= 0x0004, /* host physical interface info */
-	QS_HCT_CTRL		= 0x00e4, /* global interrupt mask offset */
-	QS_HST_SFF		= 0x0100, /* host status fifo offset */
-	QS_HVS_SERD3		= 0x0393, /* PHY enable offset */
-
-	/* global control bits */
-	QS_HPHY_64BIT		= (1 << 1), /* 64-bit bus detected */
-	QS_CNFG3_GSRST		= 0x01,     /* global chip reset */
-	QS_SERD3_PHY_ENA	= 0xf0,     /* PHY detection ENAble*/
-
-	/* per-channel register offsets */
-	QS_CCF_CPBA		= 0x0710, /* chan CPB base address */
-	QS_CCF_CSEP		= 0x0718, /* chan CPB separation factor */
-	QS_CFC_HUFT		= 0x0800, /* host upstream fifo threshold */
-	QS_CFC_HDFT		= 0x0804, /* host downstream fifo threshold */
-	QS_CFC_DUFT		= 0x0808, /* dev upstream fifo threshold */
-	QS_CFC_DDFT		= 0x080c, /* dev downstream fifo threshold */
-	QS_CCT_CTR0		= 0x0900, /* chan control-0 offset */
-	QS_CCT_CTR1		= 0x0901, /* chan control-1 offset */
-	QS_CCT_CFF		= 0x0a00, /* chan command fifo offset */
-
-	/* channel control bits */
-	QS_CTR0_REG		= (1 << 1),   /* register mode (vs. pkt mode) */
-	QS_CTR0_CLER		= (1 << 2),   /* clear channel errors */
-	QS_CTR1_RDEV		= (1 << 1),   /* sata phy/comms reset */
-	QS_CTR1_RCHN		= (1 << 4),   /* reset channel logic */
-	QS_CCF_RUN_PKT		= 0x107,      /* RUN a new dma PKT */
-
-	/* pkt sub-field headers */
-	QS_HCB_HDR		= 0x01,   /* Host Control Block header */
-	QS_DCB_HDR		= 0x02,   /* Device Control Block header */
-
-	/* pkt HCB flag bits */
-	QS_HF_DIRO		= (1 << 0),   /* data DIRection Out */
-	QS_HF_DAT		= (1 << 3),   /* DATa pkt */
-	QS_HF_IEN		= (1 << 4),   /* Interrupt ENable */
-	QS_HF_VLD		= (1 << 5),   /* VaLiD pkt */
-
-	/* pkt DCB flag bits */
-	QS_DF_PORD		= (1 << 2),   /* Pio OR Dma */
-	QS_DF_ELBA		= (1 << 3),   /* Extended LBA (lba48) */
-
-	/* PCI device IDs */
-	board_2068_idx		= 0,	/* QStor 4-port SATA/RAID */
-};
-
-enum {
-	QS_DMA_BOUNDARY		= ~0UL
-};
-
-typedef enum { qs_state_idle, qs_state_pkt, qs_state_mmio } qs_state_t;
-
-struct qs_port_priv {
-	u8			*pkt;
-	dma_addr_t		pkt_dma;
-	qs_state_t		state;
-};
-
-static u32 qs_scr_read (struct ata_port *ap, unsigned int sc_reg);
-static void qs_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
-static int qs_ata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
-static irqreturn_t qs_intr (int irq, void *dev_instance, struct pt_regs *regs);
-static int qs_port_start(struct ata_port *ap);
-static void qs_host_stop(struct ata_host_set *host_set);
-static void qs_port_stop(struct ata_port *ap);
-static void qs_phy_reset(struct ata_port *ap);
-static void qs_qc_prep(struct ata_queued_cmd *qc);
-static unsigned int qs_qc_issue(struct ata_queued_cmd *qc);
-static int qs_check_atapi_dma(struct ata_queued_cmd *qc);
-static void qs_bmdma_stop(struct ata_queued_cmd *qc);
-static u8 qs_bmdma_status(struct ata_port *ap);
-static void qs_irq_clear(struct ata_port *ap);
-static void qs_eng_timeout(struct ata_port *ap);
-
-static struct scsi_host_template qs_ata_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		= QS_MAX_PRD,
-	.cmd_per_lun		= ATA_SHT_CMD_PER_LUN,
-	.emulated		= ATA_SHT_EMULATED,
-	//FIXME .use_clustering		= ATA_SHT_USE_CLUSTERING,
-	.use_clustering		= ENABLE_CLUSTERING,
-	.proc_name		= DRV_NAME,
-	.dma_boundary		= QS_DMA_BOUNDARY,
-	.slave_configure	= ata_scsi_slave_config,
-	.slave_destroy		= ata_scsi_slave_destroy,
-	.bios_param		= ata_std_bios_param,
-};
-
-static const struct ata_port_operations qs_ata_ops = {
-	.port_disable		= ata_port_disable,
-	.tf_load		= ata_tf_load,
-	.tf_read		= ata_tf_read,
-	.check_status		= ata_check_status,
-	.check_atapi_dma	= qs_check_atapi_dma,
-	.exec_command		= ata_exec_command,
-	.dev_select		= ata_std_dev_select,
-	.phy_reset		= qs_phy_reset,
-	.qc_prep		= qs_qc_prep,
-	.qc_issue		= qs_qc_issue,
-	.data_xfer		= ata_mmio_data_xfer,
-	.eng_timeout		= qs_eng_timeout,
-	.irq_handler		= qs_intr,
-	.irq_clear		= qs_irq_clear,
-	.scr_read		= qs_scr_read,
-	.scr_write		= qs_scr_write,
-	.port_start		= qs_port_start,
-	.port_stop		= qs_port_stop,
-	.host_stop		= qs_host_stop,
-	.bmdma_stop		= qs_bmdma_stop,
-	.bmdma_status		= qs_bmdma_status,
-};
-
-static const struct ata_port_info qs_port_info[] = {
-	/* board_2068_idx */
-	{
-		.sht		= &qs_ata_sht,
-		.host_flags	= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
-				  ATA_FLAG_SATA_RESET |
-				  //FIXME ATA_FLAG_SRST |
-				  ATA_FLAG_MMIO | ATA_FLAG_PIO_POLLING,
-		.pio_mask	= 0x10, /* pio4 */
-		.udma_mask	= 0x7f, /* udma0-6 */
-		.port_ops	= &qs_ata_ops,
-	},
-};
-
-static const struct pci_device_id qs_ata_pci_tbl[] = {
-	{ PCI_VENDOR_ID_PDC, 0x2068, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
-	  board_2068_idx },
-
-	{ }	/* terminate list */
-};
-
-static struct pci_driver qs_ata_pci_driver = {
-	.name			= DRV_NAME,
-	.id_table		= qs_ata_pci_tbl,
-	.probe			= qs_ata_init_one,
-	.remove			= ata_pci_remove_one,
-};
-
-static int qs_check_atapi_dma(struct ata_queued_cmd *qc)
-{
-	return 1;	/* ATAPI DMA not supported */
-}
-
-static void qs_bmdma_stop(struct ata_queued_cmd *qc)
-{
-	/* nothing */
-}
-
-static u8 qs_bmdma_status(struct ata_port *ap)
-{
-	return 0;
-}
-
-static void qs_irq_clear(struct ata_port *ap)
-{
-	/* nothing */
-}
-
-static inline void qs_enter_reg_mode(struct ata_port *ap)
-{
-	u8 __iomem *chan = ap->host_set->mmio_base + (ap->port_no * 0x4000);
-
-	writeb(QS_CTR0_REG, chan + QS_CCT_CTR0);
-	readb(chan + QS_CCT_CTR0);        /* flush */
-}
-
-static inline void qs_reset_channel_logic(struct ata_port *ap)
-{
-	u8 __iomem *chan = ap->host_set->mmio_base + (ap->port_no * 0x4000);
-
-	writeb(QS_CTR1_RCHN, chan + QS_CCT_CTR1);
-	readb(chan + QS_CCT_CTR0);        /* flush */
-	qs_enter_reg_mode(ap);
-}
-
-static void qs_phy_reset(struct ata_port *ap)
-{
-	struct qs_port_priv *pp = ap->private_data;
-
-	pp->state = qs_state_idle;
-	qs_reset_channel_logic(ap);
-	sata_phy_reset(ap);
-}
-
-static void qs_eng_timeout(struct ata_port *ap)
-{
-	struct qs_port_priv *pp = ap->private_data;
-
-	if (pp->state != qs_state_idle) /* healthy paranoia */
-		pp->state = qs_state_mmio;
-	qs_reset_channel_logic(ap);
-	ata_eng_timeout(ap);
-}
-
-static u32 qs_scr_read (struct ata_port *ap, unsigned int sc_reg)
-{
-	if (sc_reg > SCR_CONTROL)
-		return ~0U;
-	return readl((void __iomem *)(ap->ioaddr.scr_addr + (sc_reg * 8)));
-}
-
-static void qs_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
-{
-	if (sc_reg > SCR_CONTROL)
-		return;
-	writel(val, (void __iomem *)(ap->ioaddr.scr_addr + (sc_reg * 8)));
-}
-
-static unsigned int qs_fill_sg(struct ata_queued_cmd *qc)
-{
-	struct scatterlist *sg;
-	struct ata_port *ap = qc->ap;
-	struct qs_port_priv *pp = ap->private_data;
-	unsigned int nelem;
-	u8 *prd = pp->pkt + QS_CPB_BYTES;
-
-	WARN_ON(qc->__sg == NULL);
-	WARN_ON(qc->n_elem == 0 && qc->pad_len == 0);
-
-	nelem = 0;
-	ata_for_each_sg(sg, qc) {
-		u64 addr;
-		u32 len;
-
-		addr = sg_dma_address(sg);
-		*(__le64 *)prd = cpu_to_le64(addr);
-		prd += sizeof(u64);
-
-		len = sg_dma_len(sg);
-		*(__le32 *)prd = cpu_to_le32(len);
-		prd += sizeof(u64);
-
-		VPRINTK("PRD[%u] = (0x%llX, 0x%X)\n", nelem,
-					(unsigned long long)addr, len);
-		nelem++;
-	}
-
-	return nelem;
-}
-
-static void qs_qc_prep(struct ata_queued_cmd *qc)
-{
-	struct qs_port_priv *pp = qc->ap->private_data;
-	u8 dflags = QS_DF_PORD, *buf = pp->pkt;
-	u8 hflags = QS_HF_DAT | QS_HF_IEN | QS_HF_VLD;
-	u64 addr;
-	unsigned int nelem;
-
-	VPRINTK("ENTER\n");
-
-	qs_enter_reg_mode(qc->ap);
-	if (qc->tf.protocol != ATA_PROT_DMA) {
-		ata_qc_prep(qc);
-		return;
-	}
-
-	nelem = qs_fill_sg(qc);
-
-	if ((qc->tf.flags & ATA_TFLAG_WRITE))
-		hflags |= QS_HF_DIRO;
-	if ((qc->tf.flags & ATA_TFLAG_LBA48))
-		dflags |= QS_DF_ELBA;
-
-	/* host control block (HCB) */
-	buf[ 0] = QS_HCB_HDR;
-	buf[ 1] = hflags;
-	*(__le32 *)(&buf[ 4]) = cpu_to_le32(qc->nsect * ATA_SECT_SIZE);
-	*(__le32 *)(&buf[ 8]) = cpu_to_le32(nelem);
-	addr = ((u64)pp->pkt_dma) + QS_CPB_BYTES;
-	*(__le64 *)(&buf[16]) = cpu_to_le64(addr);
-
-	/* device control block (DCB) */
-	buf[24] = QS_DCB_HDR;
-	buf[28] = dflags;
-
-	/* frame information structure (FIS) */
-	ata_tf_to_fis(&qc->tf, &buf[32], 0);
-}
-
-static inline void qs_packet_start(struct ata_queued_cmd *qc)
-{
-	struct ata_port *ap = qc->ap;
-	u8 __iomem *chan = ap->host_set->mmio_base + (ap->port_no * 0x4000);
-
-	VPRINTK("ENTER, ap %p\n", ap);
-
-	writeb(QS_CTR0_CLER, chan + QS_CCT_CTR0);
-	wmb();                             /* flush PRDs and pkt to memory */
-	writel(QS_CCF_RUN_PKT, chan + QS_CCT_CFF);
-	readl(chan + QS_CCT_CFF);          /* flush */
-}
-
-static unsigned int qs_qc_issue(struct ata_queued_cmd *qc)
-{
-	struct qs_port_priv *pp = qc->ap->private_data;
-
-	switch (qc->tf.protocol) {
-	case ATA_PROT_DMA:
-
-		pp->state = qs_state_pkt;
-		qs_packet_start(qc);
-		return 0;
-
-	case ATA_PROT_ATAPI_DMA:
-		BUG();
-		break;
-
-	default:
-		break;
-	}
-
-	pp->state = qs_state_mmio;
-	return ata_qc_issue_prot(qc);
-}
-
-static inline unsigned int qs_intr_pkt(struct ata_host_set *host_set)
-{
-	unsigned int handled = 0;
-	u8 sFFE;
-	u8 __iomem *mmio_base = host_set->mmio_base;
-
-	do {
-		u32 sff0 = readl(mmio_base + QS_HST_SFF);
-		u32 sff1 = readl(mmio_base + QS_HST_SFF + 4);
-		u8 sEVLD = (sff1 >> 30) & 0x01;	/* valid flag */
-		sFFE  = sff1 >> 31;		/* empty flag */
-
-		if (sEVLD) {
-			u8 sDST = sff0 >> 16;	/* dev status */
-			u8 sHST = sff1 & 0x3f;	/* host status */
-			unsigned int port_no = (sff1 >> 8) & 0x03;
-			struct ata_port *ap = host_set->ports[port_no];
-
-			DPRINTK("SFF=%08x%08x: sCHAN=%u sHST=%d sDST=%02x\n",
-					sff1, sff0, port_no, sHST, sDST);
-			handled = 1;
-			if (ap && !(ap->flags & ATA_FLAG_DISABLED)) {
-				struct ata_queued_cmd *qc;
-				struct qs_port_priv *pp = ap->private_data;
-				if (!pp || pp->state != qs_state_pkt)
-					continue;
-				qc = ata_qc_from_tag(ap, ap->active_tag);
-				if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) {
-					switch (sHST) {
-					case 0: /* successful CPB */
-					case 3: /* device error */
-						pp->state = qs_state_idle;
-						qs_enter_reg_mode(qc->ap);
-						qc->err_mask |= ac_err_mask(sDST);
-						ata_qc_complete(qc);
-						break;
-					default:
-						break;
-					}
-				}
-			}
-		}
-	} while (!sFFE);
-	return handled;
-}
-
-static inline unsigned int qs_intr_mmio(struct ata_host_set *host_set)
-{
-	unsigned int handled = 0, port_no;
-
-	for (port_no = 0; port_no < host_set->n_ports; ++port_no) {
-		struct ata_port *ap;
-		ap = host_set->ports[port_no];
-		if (ap &&
-		    !(ap->flags & ATA_FLAG_DISABLED)) {
-			struct ata_queued_cmd *qc;
-			struct qs_port_priv *pp = ap->private_data;
-			if (!pp || pp->state != qs_state_mmio)
-				continue;
-			qc = ata_qc_from_tag(ap, ap->active_tag);
-			if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) {
-
-				/* check main status, clearing INTRQ */
-				u8 status = ata_check_status(ap);
-				if ((status & ATA_BUSY))
-					continue;
-				DPRINTK("ata%u: protocol %d (dev_stat 0x%X)\n",
-					ap->id, qc->tf.protocol, status);
-
-				/* complete taskfile transaction */
-				pp->state = qs_state_idle;
-				qc->err_mask |= ac_err_mask(status);
-				ata_qc_complete(qc);
-				handled = 1;
-			}
-		}
-	}
-	return handled;
-}
-
-static irqreturn_t qs_intr(int irq, void *dev_instance, struct pt_regs *regs)
-{
-	struct ata_host_set *host_set = dev_instance;
-	unsigned int handled = 0;
-
-	VPRINTK("ENTER\n");
-
-	spin_lock(&host_set->lock);
-	handled  = qs_intr_pkt(host_set) | qs_intr_mmio(host_set);
-	spin_unlock(&host_set->lock);
-
-	VPRINTK("EXIT\n");
-
-	return IRQ_RETVAL(handled);
-}
-
-static void qs_ata_setup_port(struct ata_ioports *port, unsigned long base)
-{
-	port->cmd_addr		=
-	port->data_addr		= base + 0x400;
-	port->error_addr	=
-	port->feature_addr	= base + 0x408; /* hob_feature = 0x409 */
-	port->nsect_addr	= base + 0x410; /* hob_nsect   = 0x411 */
-	port->lbal_addr		= base + 0x418; /* hob_lbal    = 0x419 */
-	port->lbam_addr		= base + 0x420; /* hob_lbam    = 0x421 */
-	port->lbah_addr		= base + 0x428; /* hob_lbah    = 0x429 */
-	port->device_addr	= base + 0x430;
-	port->status_addr	=
-	port->command_addr	= base + 0x438;
-	port->altstatus_addr	=
-	port->ctl_addr		= base + 0x440;
-	port->scr_addr		= base + 0xc00;
-}
-
-static int qs_port_start(struct ata_port *ap)
-{
-	struct device *dev = ap->host_set->dev;
-	struct qs_port_priv *pp;
-	void __iomem *mmio_base = ap->host_set->mmio_base;
-	void __iomem *chan = mmio_base + (ap->port_no * 0x4000);
-	u64 addr;
-	int rc;
-
-	rc = ata_port_start(ap);
-	if (rc)
-		return rc;
-	qs_enter_reg_mode(ap);
-	pp = kzalloc(sizeof(*pp), GFP_KERNEL);
-	if (!pp) {
-		rc = -ENOMEM;
-		goto err_out;
-	}
-	pp->pkt = dma_alloc_coherent(dev, QS_PKT_BYTES, &pp->pkt_dma,
-								GFP_KERNEL);
-	if (!pp->pkt) {
-		rc = -ENOMEM;
-		goto err_out_kfree;
-	}
-	memset(pp->pkt, 0, QS_PKT_BYTES);
-	ap->private_data = pp;
-
-	addr = (u64)pp->pkt_dma;
-	writel((u32) addr,        chan + QS_CCF_CPBA);
-	writel((u32)(addr >> 32), chan + QS_CCF_CPBA + 4);
-	return 0;
-
-err_out_kfree:
-	kfree(pp);
-err_out:
-	ata_port_stop(ap);
-	return rc;
-}
-
-static void qs_port_stop(struct ata_port *ap)
-{
-	struct device *dev = ap->host_set->dev;
-	struct qs_port_priv *pp = ap->private_data;
-
-	if (pp != NULL) {
-		ap->private_data = NULL;
-		if (pp->pkt != NULL)
-			dma_free_coherent(dev, QS_PKT_BYTES, pp->pkt,
-								pp->pkt_dma);
-		kfree(pp);
-	}
-	ata_port_stop(ap);
-}
-
-static void qs_host_stop(struct ata_host_set *host_set)
-{
-	void __iomem *mmio_base = host_set->mmio_base;
-	struct pci_dev *pdev = to_pci_dev(host_set->dev);
-
-	writeb(0, mmio_base + QS_HCT_CTRL); /* disable host interrupts */
-	writeb(QS_CNFG3_GSRST, mmio_base + QS_HCF_CNFG3); /* global reset */
-
-	pci_iounmap(pdev, mmio_base);
-}
-
-static void qs_host_init(unsigned int chip_id, struct ata_probe_ent *pe)
-{
-	void __iomem *mmio_base = pe->mmio_base;
-	unsigned int port_no;
-
-	writeb(0, mmio_base + QS_HCT_CTRL); /* disable host interrupts */
-	writeb(QS_CNFG3_GSRST, mmio_base + QS_HCF_CNFG3); /* global reset */
-
-	/* reset each channel in turn */
-	for (port_no = 0; port_no < pe->n_ports; ++port_no) {
-		u8 __iomem *chan = mmio_base + (port_no * 0x4000);
-		writeb(QS_CTR1_RDEV|QS_CTR1_RCHN, chan + QS_CCT_CTR1);
-		writeb(QS_CTR0_REG, chan + QS_CCT_CTR0);
-		readb(chan + QS_CCT_CTR0);        /* flush */
-	}
-	writeb(QS_SERD3_PHY_ENA, mmio_base + QS_HVS_SERD3); /* enable phy */
-
-	for (port_no = 0; port_no < pe->n_ports; ++port_no) {
-		u8 __iomem *chan = mmio_base + (port_no * 0x4000);
-		/* set FIFO depths to same settings as Windows driver */
-		writew(32, chan + QS_CFC_HUFT);
-		writew(32, chan + QS_CFC_HDFT);
-		writew(10, chan + QS_CFC_DUFT);
-		writew( 8, chan + QS_CFC_DDFT);
-		/* set CPB size in bytes, as a power of two */
-		writeb(QS_CPB_ORDER,    chan + QS_CCF_CSEP);
-	}
-	writeb(1, mmio_base + QS_HCT_CTRL); /* enable host interrupts */
-}
-
-/*
- * The QStor understands 64-bit buses, and uses 64-bit fields
- * for DMA pointers regardless of bus width.  We just have to
- * make sure our DMA masks are set appropriately for whatever
- * bridge lies between us and the QStor, and then the DMA mapping
- * code will ensure we only ever "see" appropriate buffer addresses.
- * If we're 32-bit limited somewhere, then our 64-bit fields will
- * just end up with zeros in the upper 32-bits, without any special
- * logic required outside of this routine (below).
- */
-static int qs_set_dma_masks(struct pci_dev *pdev, void __iomem *mmio_base)
-{
-	u32 bus_info = readl(mmio_base + QS_HID_HPHY);
-	int rc, have_64bit_bus = (bus_info & QS_HPHY_64BIT);
-
-	if (have_64bit_bus &&
-	    !pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
-		rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
-		if (rc) {
-			rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
-			if (rc) {
-				dev_printk(KERN_ERR, &pdev->dev,
-					   "64-bit DMA enable failed\n");
-				return rc;
-			}
-		}
-	} else {
-		rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
-		if (rc) {
-			dev_printk(KERN_ERR, &pdev->dev,
-				"32-bit DMA enable failed\n");
-			return rc;
-		}
-		rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
-		if (rc) {
-			dev_printk(KERN_ERR, &pdev->dev,
-				"32-bit consistent DMA enable failed\n");
-			return rc;
-		}
-	}
-	return 0;
-}
-
-static int qs_ata_init_one(struct pci_dev *pdev,
-				const struct pci_device_id *ent)
-{
-	static int printed_version;
-	struct ata_probe_ent *probe_ent = NULL;
-	void __iomem *mmio_base;
-	unsigned int board_idx = (unsigned int) ent->driver_data;
-	int rc, port_no;
-
-	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)
-		goto err_out;
-
-	if ((pci_resource_flags(pdev, 4) & IORESOURCE_MEM) == 0) {
-		rc = -ENODEV;
-		goto err_out_regions;
-	}
-
-	mmio_base = pci_iomap(pdev, 4, 0);
-	if (mmio_base == NULL) {
-		rc = -ENOMEM;
-		goto err_out_regions;
-	}
-
-	rc = qs_set_dma_masks(pdev, mmio_base);
-	if (rc)
-		goto err_out_iounmap;
-
-	probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
-	if (probe_ent == NULL) {
-		rc = -ENOMEM;
-		goto err_out_iounmap;
-	}
-
-	memset(probe_ent, 0, sizeof(*probe_ent));
-	probe_ent->dev = pci_dev_to_dev(pdev);
-	INIT_LIST_HEAD(&probe_ent->node);
-
-	probe_ent->sht		= qs_port_info[board_idx].sht;
-	probe_ent->host_flags	= qs_port_info[board_idx].host_flags;
-	probe_ent->pio_mask	= qs_port_info[board_idx].pio_mask;
-	probe_ent->mwdma_mask	= qs_port_info[board_idx].mwdma_mask;
-	probe_ent->udma_mask	= qs_port_info[board_idx].udma_mask;
-	probe_ent->port_ops	= qs_port_info[board_idx].port_ops;
-
-	probe_ent->irq		= pdev->irq;
-	probe_ent->irq_flags	= IRQF_SHARED;
-	probe_ent->mmio_base	= mmio_base;
-	probe_ent->n_ports	= QS_PORTS;
-
-	for (port_no = 0; port_no < probe_ent->n_ports; ++port_no) {
-		unsigned long chan = (unsigned long)mmio_base +
-							(port_no * 0x4000);
-		qs_ata_setup_port(&probe_ent->port[port_no], chan);
-	}
-
-	pci_set_master(pdev);
-
-	/* initialize adapter */
-	qs_host_init(board_idx, probe_ent);
-
-	rc = ata_device_add(probe_ent);
-	kfree(probe_ent);
-	if (rc != QS_PORTS)
-		goto err_out_iounmap;
-	return 0;
-
-err_out_iounmap:
-	pci_iounmap(pdev, mmio_base);
-err_out_regions:
-	pci_release_regions(pdev);
-err_out:
-	pci_disable_device(pdev);
-	return rc;
-}
-
-static int __init qs_ata_init(void)
-{
-	return pci_register_driver(&qs_ata_pci_driver);
-}
-
-static void __exit qs_ata_exit(void)
-{
-	pci_unregister_driver(&qs_ata_pci_driver);
-}
-
-MODULE_AUTHOR("Mark Lord");
-MODULE_DESCRIPTION("Pacific Digital Corporation QStor SATA low-level driver");
-MODULE_LICENSE("GPL");
-MODULE_DEVICE_TABLE(pci, qs_ata_pci_tbl);
-MODULE_VERSION(DRV_VERSION);
-
-module_init(qs_ata_init);
-module_exit(qs_ata_exit);