Merge with /pub/scm/linux/kernel/git/torvalds/linux-2.6.git

1 files changed, 285 insertions, 250 deletions

diff --git a/drivers/scsi/sata_nv.c b/drivers/scsi/sata_nv.c
index 9f553081b5e..d18e7e0932e 100644
--- a/drivers/scsi/sata_nv.c
+++ b/drivers/scsi/sata_nv.c
@@ -44,7 +44,7 @@
 #include <linux/libata.h>
 
 #define DRV_NAME			"sata_nv"
-#define DRV_VERSION			"0.8"
+#define DRV_VERSION			"0.9"
 
 enum {
 	NV_PORTS			= 2,
@@ -54,40 +54,25 @@ enum {
 	NV_PORT0_SCR_REG_OFFSET		= 0x00,
 	NV_PORT1_SCR_REG_OFFSET		= 0x40,
 
+	/* INT_STATUS/ENABLE */
 	NV_INT_STATUS			= 0x10,
-	NV_INT_STATUS_CK804		= 0x440,
-	NV_INT_STATUS_PDEV_INT		= 0x01,
-	NV_INT_STATUS_PDEV_PM		= 0x02,
-	NV_INT_STATUS_PDEV_ADDED	= 0x04,
-	NV_INT_STATUS_PDEV_REMOVED	= 0x08,
-	NV_INT_STATUS_SDEV_INT		= 0x10,
-	NV_INT_STATUS_SDEV_PM		= 0x20,
-	NV_INT_STATUS_SDEV_ADDED	= 0x40,
-	NV_INT_STATUS_SDEV_REMOVED	= 0x80,
-	NV_INT_STATUS_PDEV_HOTPLUG	= (NV_INT_STATUS_PDEV_ADDED |
-					   NV_INT_STATUS_PDEV_REMOVED),
-	NV_INT_STATUS_SDEV_HOTPLUG	= (NV_INT_STATUS_SDEV_ADDED |
-					   NV_INT_STATUS_SDEV_REMOVED),
-	NV_INT_STATUS_HOTPLUG		= (NV_INT_STATUS_PDEV_HOTPLUG |
-					   NV_INT_STATUS_SDEV_HOTPLUG),
-
 	NV_INT_ENABLE			= 0x11,
+	NV_INT_STATUS_CK804		= 0x440,
 	NV_INT_ENABLE_CK804		= 0x441,
-	NV_INT_ENABLE_PDEV_MASK		= 0x01,
-	NV_INT_ENABLE_PDEV_PM		= 0x02,
-	NV_INT_ENABLE_PDEV_ADDED	= 0x04,
-	NV_INT_ENABLE_PDEV_REMOVED	= 0x08,
-	NV_INT_ENABLE_SDEV_MASK		= 0x10,
-	NV_INT_ENABLE_SDEV_PM		= 0x20,
-	NV_INT_ENABLE_SDEV_ADDED	= 0x40,
-	NV_INT_ENABLE_SDEV_REMOVED	= 0x80,
-	NV_INT_ENABLE_PDEV_HOTPLUG	= (NV_INT_ENABLE_PDEV_ADDED |
-					   NV_INT_ENABLE_PDEV_REMOVED),
-	NV_INT_ENABLE_SDEV_HOTPLUG	= (NV_INT_ENABLE_SDEV_ADDED |
-					   NV_INT_ENABLE_SDEV_REMOVED),
-	NV_INT_ENABLE_HOTPLUG		= (NV_INT_ENABLE_PDEV_HOTPLUG |
-					   NV_INT_ENABLE_SDEV_HOTPLUG),
 
+	/* INT_STATUS/ENABLE bits */
+	NV_INT_DEV			= 0x01,
+	NV_INT_PM			= 0x02,
+	NV_INT_ADDED			= 0x04,
+	NV_INT_REMOVED			= 0x08,
+
+	NV_INT_PORT_SHIFT		= 4,	/* each port occupies 4 bits */
+
+	NV_INT_ALL			= 0x0f,
+	NV_INT_MASK			= NV_INT_DEV |
+					  NV_INT_ADDED | NV_INT_REMOVED,
+
+	/* INT_CONFIG */
 	NV_INT_CONFIG			= 0x12,
 	NV_INT_CONFIG_METHD		= 0x01, // 0 = INT, 1 = SMI
 
@@ -97,23 +82,27 @@ enum {
 };
 
 static int nv_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
-static irqreturn_t nv_interrupt (int irq, void *dev_instance,
-				 struct pt_regs *regs);
+static void nv_ck804_host_stop(struct ata_host_set *host_set);
+static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance,
+					struct pt_regs *regs);
+static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance,
+				    struct pt_regs *regs);
+static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance,
+				      struct pt_regs *regs);
 static u32 nv_scr_read (struct ata_port *ap, unsigned int sc_reg);
 static void nv_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
-static void nv_host_stop (struct ata_host_set *host_set);
-static void nv_enable_hotplug(struct ata_probe_ent *probe_ent);
-static void nv_disable_hotplug(struct ata_host_set *host_set);
-static int nv_check_hotplug(struct ata_host_set *host_set);
-static void nv_enable_hotplug_ck804(struct ata_probe_ent *probe_ent);
-static void nv_disable_hotplug_ck804(struct ata_host_set *host_set);
-static int nv_check_hotplug_ck804(struct ata_host_set *host_set);
+
+static void nv_nf2_freeze(struct ata_port *ap);
+static void nv_nf2_thaw(struct ata_port *ap);
+static void nv_ck804_freeze(struct ata_port *ap);
+static void nv_ck804_thaw(struct ata_port *ap);
+static void nv_error_handler(struct ata_port *ap);
 
 enum nv_host_type
 {
 	GENERIC,
 	NFORCE2,
-	NFORCE3,
+	NFORCE3 = NFORCE2,	/* NF2 == NF3 as far as sata_nv is concerned */
 	CK804
 };
 
@@ -140,6 +129,16 @@ static const struct pci_device_id nv_pci_tbl[] = {
 		PCI_ANY_ID, PCI_ANY_ID, 0, 0, GENERIC },
 	{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA2,
 		PCI_ANY_ID, PCI_ANY_ID, 0, 0, GENERIC },
+	{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA,
+		PCI_ANY_ID, PCI_ANY_ID, 0, 0, GENERIC },
+	{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA2,
+		PCI_ANY_ID, PCI_ANY_ID, 0, 0, GENERIC },
+	{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA3,
+		PCI_ANY_ID, PCI_ANY_ID, 0, 0, GENERIC },
+	{ PCI_VENDOR_ID_NVIDIA, 0x045c, PCI_ANY_ID, PCI_ANY_ID, 0, 0, GENERIC },
+	{ PCI_VENDOR_ID_NVIDIA, 0x045d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, GENERIC },
+	{ PCI_VENDOR_ID_NVIDIA, 0x045e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, GENERIC },
+	{ PCI_VENDOR_ID_NVIDIA, 0x045f, PCI_ANY_ID, PCI_ANY_ID, 0, 0, GENERIC },
 	{ PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
 		PCI_ANY_ID, PCI_ANY_ID,
 		PCI_CLASS_STORAGE_IDE<<8, 0xffff00, GENERIC },
@@ -149,46 +148,6 @@ static const struct pci_device_id nv_pci_tbl[] = {
 	{ 0, } /* terminate list */
 };
 
-struct nv_host_desc
-{
-	enum nv_host_type	host_type;
-	void			(*enable_hotplug)(struct ata_probe_ent *probe_ent);
-	void			(*disable_hotplug)(struct ata_host_set *host_set);
-	int			(*check_hotplug)(struct ata_host_set *host_set);
-
-};
-static struct nv_host_desc nv_device_tbl[] = {
-	{
-		.host_type	= GENERIC,
-		.enable_hotplug	= NULL,
-		.disable_hotplug= NULL,
-		.check_hotplug	= NULL,
-	},
-	{
-		.host_type	= NFORCE2,
-		.enable_hotplug	= nv_enable_hotplug,
-		.disable_hotplug= nv_disable_hotplug,
-		.check_hotplug	= nv_check_hotplug,
-	},
-	{
-		.host_type	= NFORCE3,
-		.enable_hotplug	= nv_enable_hotplug,
-		.disable_hotplug= nv_disable_hotplug,
-		.check_hotplug	= nv_check_hotplug,
-	},
-	{	.host_type	= CK804,
-		.enable_hotplug	= nv_enable_hotplug_ck804,
-		.disable_hotplug= nv_disable_hotplug_ck804,
-		.check_hotplug	= nv_check_hotplug_ck804,
-	},
-};
-
-struct nv_host
-{
-	struct nv_host_desc	*host_desc;
-	unsigned long		host_flags;
-};
-
 static struct pci_driver nv_pci_driver = {
 	.name			= DRV_NAME,
 	.id_table		= nv_pci_tbl,
@@ -210,51 +169,119 @@ static struct scsi_host_template nv_sht = {
 	.proc_name		= DRV_NAME,
 	.dma_boundary		= ATA_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 nv_ops = {
+static const struct ata_port_operations nv_generic_ops = {
 	.port_disable		= ata_port_disable,
 	.tf_load		= ata_tf_load,
 	.tf_read		= ata_tf_read,
 	.exec_command		= ata_exec_command,
 	.check_status		= ata_check_status,
 	.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		= nv_interrupt,
+	.freeze			= ata_bmdma_freeze,
+	.thaw			= ata_bmdma_thaw,
+	.error_handler		= nv_error_handler,
+	.post_internal_cmd	= ata_bmdma_post_internal_cmd,
+	.data_xfer		= ata_pio_data_xfer,
+	.irq_handler		= nv_generic_interrupt,
 	.irq_clear		= ata_bmdma_irq_clear,
 	.scr_read		= nv_scr_read,
 	.scr_write		= nv_scr_write,
 	.port_start		= ata_port_start,
 	.port_stop		= ata_port_stop,
-	.host_stop		= nv_host_stop,
+	.host_stop		= ata_pci_host_stop,
 };
 
-/* FIXME: The hardware provides the necessary SATA PHY controls
- * to support ATA_FLAG_SATA_RESET.  However, it is currently
- * necessary to disable that flag, to solve misdetection problems.
- * See http://bugme.osdl.org/show_bug.cgi?id=3352 for more info.
- *
- * This problem really needs to be investigated further.  But in the
- * meantime, we avoid ATA_FLAG_SATA_RESET to get people working.
- */
-static struct ata_port_info nv_port_info = {
-	.sht		= &nv_sht,
-	.host_flags	= ATA_FLAG_SATA |
-			  /* ATA_FLAG_SATA_RESET | */
-			  ATA_FLAG_SRST |
-			  ATA_FLAG_NO_LEGACY,
-	.pio_mask	= NV_PIO_MASK,
-	.mwdma_mask	= NV_MWDMA_MASK,
-	.udma_mask	= NV_UDMA_MASK,
-	.port_ops	= &nv_ops,
+static const struct ata_port_operations nv_nf2_ops = {
+	.port_disable		= ata_port_disable,
+	.tf_load		= ata_tf_load,
+	.tf_read		= ata_tf_read,
+	.exec_command		= ata_exec_command,
+	.check_status		= ata_check_status,
+	.dev_select		= ata_std_dev_select,
+	.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,
+	.freeze			= nv_nf2_freeze,
+	.thaw			= nv_nf2_thaw,
+	.error_handler		= nv_error_handler,
+	.post_internal_cmd	= ata_bmdma_post_internal_cmd,
+	.data_xfer		= ata_pio_data_xfer,
+	.irq_handler		= nv_nf2_interrupt,
+	.irq_clear		= ata_bmdma_irq_clear,
+	.scr_read		= nv_scr_read,
+	.scr_write		= nv_scr_write,
+	.port_start		= ata_port_start,
+	.port_stop		= ata_port_stop,
+	.host_stop		= ata_pci_host_stop,
+};
+
+static const struct ata_port_operations nv_ck804_ops = {
+	.port_disable		= ata_port_disable,
+	.tf_load		= ata_tf_load,
+	.tf_read		= ata_tf_read,
+	.exec_command		= ata_exec_command,
+	.check_status		= ata_check_status,
+	.dev_select		= ata_std_dev_select,
+	.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,
+	.freeze			= nv_ck804_freeze,
+	.thaw			= nv_ck804_thaw,
+	.error_handler		= nv_error_handler,
+	.post_internal_cmd	= ata_bmdma_post_internal_cmd,
+	.data_xfer		= ata_pio_data_xfer,
+	.irq_handler		= nv_ck804_interrupt,
+	.irq_clear		= ata_bmdma_irq_clear,
+	.scr_read		= nv_scr_read,
+	.scr_write		= nv_scr_write,
+	.port_start		= ata_port_start,
+	.port_stop		= ata_port_stop,
+	.host_stop		= nv_ck804_host_stop,
+};
+
+static struct ata_port_info nv_port_info[] = {
+	/* generic */
+	{
+		.sht		= &nv_sht,
+		.host_flags	= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
+		.pio_mask	= NV_PIO_MASK,
+		.mwdma_mask	= NV_MWDMA_MASK,
+		.udma_mask	= NV_UDMA_MASK,
+		.port_ops	= &nv_generic_ops,
+	},
+	/* nforce2/3 */
+	{
+		.sht		= &nv_sht,
+		.host_flags	= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
+		.pio_mask	= NV_PIO_MASK,
+		.mwdma_mask	= NV_MWDMA_MASK,
+		.udma_mask	= NV_UDMA_MASK,
+		.port_ops	= &nv_nf2_ops,
+	},
+	/* ck804 */
+	{
+		.sht		= &nv_sht,
+		.host_flags	= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
+		.pio_mask	= NV_PIO_MASK,
+		.mwdma_mask	= NV_MWDMA_MASK,
+		.udma_mask	= NV_UDMA_MASK,
+		.port_ops	= &nv_ck804_ops,
+	},
 };
 
 MODULE_AUTHOR("NVIDIA");
@@ -263,11 +290,10 @@ MODULE_LICENSE("GPL");
 MODULE_DEVICE_TABLE(pci, nv_pci_tbl);
 MODULE_VERSION(DRV_VERSION);
 
-static irqreturn_t nv_interrupt (int irq, void *dev_instance,
-				 struct pt_regs *regs)
+static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance,
+					struct pt_regs *regs)
 {
 	struct ata_host_set *host_set = dev_instance;
-	struct nv_host *host = host_set->private_data;
 	unsigned int i;
 	unsigned int handled = 0;
 	unsigned long flags;
@@ -279,11 +305,11 @@ static irqreturn_t nv_interrupt (int irq, void *dev_instance,
 
 		ap = host_set->ports[i];
 		if (ap &&
-		    !(ap->flags & (ATA_FLAG_PORT_DISABLED | ATA_FLAG_NOINTR))) {
+		    !(ap->flags & ATA_FLAG_DISABLED)) {
 			struct ata_queued_cmd *qc;
 
 			qc = ata_qc_from_tag(ap, ap->active_tag);
-			if (qc && (!(qc->tf.ctl & ATA_NIEN)))
+			if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
 				handled += ata_host_intr(ap, qc);
 			else
 				// No request pending?  Clear interrupt status
@@ -293,14 +319,88 @@ static irqreturn_t nv_interrupt (int irq, void *dev_instance,
 
 	}
 
-	if (host->host_desc->check_hotplug)
-		handled += host->host_desc->check_hotplug(host_set);
-
 	spin_unlock_irqrestore(&host_set->lock, flags);
 
 	return IRQ_RETVAL(handled);
 }
 
+static int nv_host_intr(struct ata_port *ap, u8 irq_stat)
+{
+	struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->active_tag);
+	int handled;
+
+	/* freeze if hotplugged */
+	if (unlikely(irq_stat & (NV_INT_ADDED | NV_INT_REMOVED))) {
+		ata_port_freeze(ap);
+		return 1;
+	}
+
+	/* bail out if not our interrupt */
+	if (!(irq_stat & NV_INT_DEV))
+		return 0;
+
+	/* DEV interrupt w/ no active qc? */
+	if (unlikely(!qc || (qc->tf.flags & ATA_TFLAG_POLLING))) {
+		ata_check_status(ap);
+		return 1;
+	}
+
+	/* handle interrupt */
+	handled = ata_host_intr(ap, qc);
+	if (unlikely(!handled)) {
+		/* spurious, clear it */
+		ata_check_status(ap);
+	}
+
+	return 1;
+}
+
+static irqreturn_t nv_do_interrupt(struct ata_host_set *host_set, u8 irq_stat)
+{
+	int i, handled = 0;
+
+	for (i = 0; i < host_set->n_ports; i++) {
+		struct ata_port *ap = host_set->ports[i];
+
+		if (ap && !(ap->flags & ATA_FLAG_DISABLED))
+			handled += nv_host_intr(ap, irq_stat);
+
+		irq_stat >>= NV_INT_PORT_SHIFT;
+	}
+
+	return IRQ_RETVAL(handled);
+}
+
+static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance,
+				    struct pt_regs *regs)
+{
+	struct ata_host_set *host_set = dev_instance;
+	u8 irq_stat;
+	irqreturn_t ret;
+
+	spin_lock(&host_set->lock);
+	irq_stat = inb(host_set->ports[0]->ioaddr.scr_addr + NV_INT_STATUS);
+	ret = nv_do_interrupt(host_set, irq_stat);
+	spin_unlock(&host_set->lock);
+
+	return ret;
+}
+
+static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance,
+				      struct pt_regs *regs)
+{
+	struct ata_host_set *host_set = dev_instance;
+	u8 irq_stat;
+	irqreturn_t ret;
+
+	spin_lock(&host_set->lock);
+	irq_stat = readb(host_set->mmio_base + NV_INT_STATUS_CK804);
+	ret = nv_do_interrupt(host_set, irq_stat);
+	spin_unlock(&host_set->lock);
+
+	return ret;
+}
+
 static u32 nv_scr_read (struct ata_port *ap, unsigned int sc_reg)
 {
 	if (sc_reg > SCR_CONTROL)
@@ -317,23 +417,74 @@ static void nv_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
 	iowrite32(val, (void __iomem *)ap->ioaddr.scr_addr + (sc_reg * 4));
 }
 
-static void nv_host_stop (struct ata_host_set *host_set)
+static void nv_nf2_freeze(struct ata_port *ap)
 {
-	struct nv_host *host = host_set->private_data;
+	unsigned long scr_addr = ap->host_set->ports[0]->ioaddr.scr_addr;
+	int shift = ap->port_no * NV_INT_PORT_SHIFT;
+	u8 mask;
 
-	// Disable hotplug event interrupts.
-	if (host->host_desc->disable_hotplug)
-		host->host_desc->disable_hotplug(host_set);
+	mask = inb(scr_addr + NV_INT_ENABLE);
+	mask &= ~(NV_INT_ALL << shift);
+	outb(mask, scr_addr + NV_INT_ENABLE);
+}
 
-	kfree(host);
+static void nv_nf2_thaw(struct ata_port *ap)
+{
+	unsigned long scr_addr = ap->host_set->ports[0]->ioaddr.scr_addr;
+	int shift = ap->port_no * NV_INT_PORT_SHIFT;
+	u8 mask;
 
-	ata_pci_host_stop(host_set);
+	outb(NV_INT_ALL << shift, scr_addr + NV_INT_STATUS);
+
+	mask = inb(scr_addr + NV_INT_ENABLE);
+	mask |= (NV_INT_MASK << shift);
+	outb(mask, scr_addr + NV_INT_ENABLE);
+}
+
+static void nv_ck804_freeze(struct ata_port *ap)
+{
+	void __iomem *mmio_base = ap->host_set->mmio_base;
+	int shift = ap->port_no * NV_INT_PORT_SHIFT;
+	u8 mask;
+
+	mask = readb(mmio_base + NV_INT_ENABLE_CK804);
+	mask &= ~(NV_INT_ALL << shift);
+	writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
+}
+
+static void nv_ck804_thaw(struct ata_port *ap)
+{
+	void __iomem *mmio_base = ap->host_set->mmio_base;
+	int shift = ap->port_no * NV_INT_PORT_SHIFT;
+	u8 mask;
+
+	writeb(NV_INT_ALL << shift, mmio_base + NV_INT_STATUS_CK804);
+
+	mask = readb(mmio_base + NV_INT_ENABLE_CK804);
+	mask |= (NV_INT_MASK << shift);
+	writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
+}
+
+static int nv_hardreset(struct ata_port *ap, unsigned int *class)
+{
+	unsigned int dummy;
+
+	/* SATA hardreset fails to retrieve proper device signature on
+	 * some controllers.  Don't classify on hardreset.  For more
+	 * info, see http://bugme.osdl.org/show_bug.cgi?id=3352
+	 */
+	return sata_std_hardreset(ap, &dummy);
+}
+
+static void nv_error_handler(struct ata_port *ap)
+{
+	ata_bmdma_drive_eh(ap, ata_std_prereset, ata_std_softreset,
+			   nv_hardreset, ata_std_postreset);
 }
 
 static int nv_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 {
 	static int printed_version = 0;
-	struct nv_host *host;
 	struct ata_port_info *ppi;
 	struct ata_probe_ent *probe_ent;
 	int pci_dev_busy = 0;
@@ -370,24 +521,15 @@ static int nv_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	rc = -ENOMEM;
 
-	ppi = &nv_port_info;
+	ppi = &nv_port_info[ent->driver_data];
 	probe_ent = ata_pci_init_native_mode(pdev, &ppi, ATA_PORT_PRIMARY | ATA_PORT_SECONDARY);
 	if (!probe_ent)
 		goto err_out_regions;
 
-	host = kmalloc(sizeof(struct nv_host), GFP_KERNEL);
-	if (!host)
-		goto err_out_free_ent;
-
-	memset(host, 0, sizeof(struct nv_host));
-	host->host_desc = &nv_device_tbl[ent->driver_data];
-
-	probe_ent->private_data = host;
-
 	probe_ent->mmio_base = pci_iomap(pdev, 5, 0);
 	if (!probe_ent->mmio_base) {
 		rc = -EIO;
-		goto err_out_free_host;
+		goto err_out_free_ent;
 	}
 
 	base = (unsigned long)probe_ent->mmio_base;
@@ -395,24 +537,27 @@ static int nv_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 	probe_ent->port[0].scr_addr = base + NV_PORT0_SCR_REG_OFFSET;
 	probe_ent->port[1].scr_addr = base + NV_PORT1_SCR_REG_OFFSET;
 
+	/* enable SATA space for CK804 */
+	if (ent->driver_data == CK804) {
+		u8 regval;
+
+		pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, &regval);
+		regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
+		pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
+	}
+
 	pci_set_master(pdev);
 
 	rc = ata_device_add(probe_ent);
 	if (rc != NV_PORTS)
 		goto err_out_iounmap;
 
-	// Enable hotplug event interrupts.
-	if (host->host_desc->enable_hotplug)
-		host->host_desc->enable_hotplug(probe_ent);
-
 	kfree(probe_ent);
 
 	return 0;
 
 err_out_iounmap:
 	pci_iounmap(pdev, probe_ent->mmio_base);
-err_out_free_host:
-	kfree(host);
 err_out_free_ent:
 	kfree(probe_ent);
 err_out_regions:
@@ -424,127 +569,17 @@ err_out:
 	return rc;
 }
 
-static void nv_enable_hotplug(struct ata_probe_ent *probe_ent)
-{
-	u8 intr_mask;
-
-	outb(NV_INT_STATUS_HOTPLUG,
-		probe_ent->port[0].scr_addr + NV_INT_STATUS);
-
-	intr_mask = inb(probe_ent->port[0].scr_addr + NV_INT_ENABLE);
-	intr_mask |= NV_INT_ENABLE_HOTPLUG;
-
-	outb(intr_mask, probe_ent->port[0].scr_addr + NV_INT_ENABLE);
-}
-
-static void nv_disable_hotplug(struct ata_host_set *host_set)
-{
-	u8 intr_mask;
-
-	intr_mask = inb(host_set->ports[0]->ioaddr.scr_addr + NV_INT_ENABLE);
-
-	intr_mask &= ~(NV_INT_ENABLE_HOTPLUG);
-
-	outb(intr_mask, host_set->ports[0]->ioaddr.scr_addr + NV_INT_ENABLE);
-}
-
-static int nv_check_hotplug(struct ata_host_set *host_set)
-{
-	u8 intr_status;
-
-	intr_status = inb(host_set->ports[0]->ioaddr.scr_addr + NV_INT_STATUS);
-
-	// Clear interrupt status.
-	outb(0xff, host_set->ports[0]->ioaddr.scr_addr + NV_INT_STATUS);
-
-	if (intr_status & NV_INT_STATUS_HOTPLUG) {
-		if (intr_status & NV_INT_STATUS_PDEV_ADDED)
-			printk(KERN_WARNING "nv_sata: "
-				"Primary device added\n");
-
-		if (intr_status & NV_INT_STATUS_PDEV_REMOVED)
-			printk(KERN_WARNING "nv_sata: "
-				"Primary device removed\n");
-
-		if (intr_status & NV_INT_STATUS_SDEV_ADDED)
-			printk(KERN_WARNING "nv_sata: "
-				"Secondary device added\n");
-
-		if (intr_status & NV_INT_STATUS_SDEV_REMOVED)
-			printk(KERN_WARNING "nv_sata: "
-				"Secondary device removed\n");
-
-		return 1;
-	}
-
-	return 0;
-}
-
-static void nv_enable_hotplug_ck804(struct ata_probe_ent *probe_ent)
-{
-	struct pci_dev *pdev = to_pci_dev(probe_ent->dev);
-	u8 intr_mask;
-	u8 regval;
-
-	pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, &regval);
-	regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
-	pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
-
-	writeb(NV_INT_STATUS_HOTPLUG, probe_ent->mmio_base + NV_INT_STATUS_CK804);
-
-	intr_mask = readb(probe_ent->mmio_base + NV_INT_ENABLE_CK804);
-	intr_mask |= NV_INT_ENABLE_HOTPLUG;
-
-	writeb(intr_mask, probe_ent->mmio_base + NV_INT_ENABLE_CK804);
-}
-
-static void nv_disable_hotplug_ck804(struct ata_host_set *host_set)
+static void nv_ck804_host_stop(struct ata_host_set *host_set)
 {
 	struct pci_dev *pdev = to_pci_dev(host_set->dev);
-	u8 intr_mask;
 	u8 regval;
 
-	intr_mask = readb(host_set->mmio_base + NV_INT_ENABLE_CK804);
-
-	intr_mask &= ~(NV_INT_ENABLE_HOTPLUG);
-
-	writeb(intr_mask, host_set->mmio_base + NV_INT_ENABLE_CK804);
-
+	/* disable SATA space for CK804 */
 	pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, &regval);
 	regval &= ~NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
 	pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
-}
-
-static int nv_check_hotplug_ck804(struct ata_host_set *host_set)
-{
-	u8 intr_status;
 
-	intr_status = readb(host_set->mmio_base + NV_INT_STATUS_CK804);
-
-	// Clear interrupt status.
-	writeb(0xff, host_set->mmio_base + NV_INT_STATUS_CK804);
-
-	if (intr_status & NV_INT_STATUS_HOTPLUG) {
-		if (intr_status & NV_INT_STATUS_PDEV_ADDED)
-			printk(KERN_WARNING "nv_sata: "
-				"Primary device added\n");
-
-		if (intr_status & NV_INT_STATUS_PDEV_REMOVED)
-			printk(KERN_WARNING "nv_sata: "
-				"Primary device removed\n");
-
-		if (intr_status & NV_INT_STATUS_SDEV_ADDED)
-			printk(KERN_WARNING "nv_sata: "
-				"Secondary device added\n");
-
-		if (intr_status & NV_INT_STATUS_SDEV_REMOVED)
-			printk(KERN_WARNING "nv_sata: "
-				"Secondary device removed\n");
-
-		return 1;
-	}
-
-	return 0;
+	ata_pci_host_stop(host_set);
 }
 
 static int __init nv_init(void)