Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 570 insertions, 0 deletions

diff --git a/drivers/scsi/sata_nv.c b/drivers/scsi/sata_nv.c
new file mode 100644
index 000000000000..69009f853a49
--- /dev/null
+++ b/drivers/scsi/sata_nv.c
@@ -0,0 +1,570 @@
+/*
+ *  sata_nv.c - NVIDIA nForce SATA
+ *
+ *  Copyright 2004 NVIDIA Corp.  All rights reserved.
+ *  Copyright 2004 Andrew Chew
+ *
+ *  The contents of this file are subject to the Open
+ *  Software License version 1.1 that can be found at
+ *  http://www.opensource.org/licenses/osl-1.1.txt and is included herein
+ *  by reference.
+ *
+ *  Alternatively, the contents of this file may be used under the terms
+ *  of the GNU General Public License version 2 (the "GPL") as distributed
+ *  in the kernel source COPYING file, in which case the provisions of
+ *  the GPL are applicable instead of the above.  If you wish to allow
+ *  the use of your version of this file only under the terms of the
+ *  GPL and not to allow others to use your version of this file under
+ *  the OSL, indicate your decision by deleting the provisions above and
+ *  replace them with the notice and other provisions required by the GPL.
+ *  If you do not delete the provisions above, a recipient may use your
+ *  version of this file under either the OSL or the GPL.
+ *
+ *  0.06
+ *     - Added generic SATA support by using a pci_device_id that filters on
+ *       the IDE storage class code.
+ *
+ *  0.03
+ *     - Fixed a bug where the hotplug handlers for non-CK804/MCP04 were using
+ *       mmio_base, which is only set for the CK804/MCP04 case.
+ *
+ *  0.02
+ *     - Added support for CK804 SATA controller.
+ *
+ *  0.01
+ *     - Initial revision.
+ */
+
+#include <linux/config.h>
+#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 "scsi.h"
+#include <scsi/scsi_host.h>
+#include <linux/libata.h>
+
+#define DRV_NAME			"sata_nv"
+#define DRV_VERSION			"0.6"
+
+#define NV_PORTS			2
+#define NV_PIO_MASK			0x1f
+#define NV_MWDMA_MASK			0x07
+#define NV_UDMA_MASK			0x7f
+#define NV_PORT0_SCR_REG_OFFSET		0x00
+#define NV_PORT1_SCR_REG_OFFSET		0x40
+
+#define NV_INT_STATUS			0x10
+#define NV_INT_STATUS_CK804		0x440
+#define NV_INT_STATUS_PDEV_INT		0x01
+#define NV_INT_STATUS_PDEV_PM		0x02
+#define NV_INT_STATUS_PDEV_ADDED	0x04
+#define NV_INT_STATUS_PDEV_REMOVED	0x08
+#define NV_INT_STATUS_SDEV_INT		0x10
+#define NV_INT_STATUS_SDEV_PM		0x20
+#define NV_INT_STATUS_SDEV_ADDED	0x40
+#define NV_INT_STATUS_SDEV_REMOVED	0x80
+#define NV_INT_STATUS_PDEV_HOTPLUG	(NV_INT_STATUS_PDEV_ADDED | \
+					NV_INT_STATUS_PDEV_REMOVED)
+#define NV_INT_STATUS_SDEV_HOTPLUG	(NV_INT_STATUS_SDEV_ADDED | \
+					NV_INT_STATUS_SDEV_REMOVED)
+#define NV_INT_STATUS_HOTPLUG		(NV_INT_STATUS_PDEV_HOTPLUG | \
+					NV_INT_STATUS_SDEV_HOTPLUG)
+
+#define NV_INT_ENABLE			0x11
+#define NV_INT_ENABLE_CK804		0x441
+#define NV_INT_ENABLE_PDEV_MASK		0x01
+#define NV_INT_ENABLE_PDEV_PM		0x02
+#define NV_INT_ENABLE_PDEV_ADDED	0x04
+#define NV_INT_ENABLE_PDEV_REMOVED	0x08
+#define NV_INT_ENABLE_SDEV_MASK		0x10
+#define NV_INT_ENABLE_SDEV_PM		0x20
+#define NV_INT_ENABLE_SDEV_ADDED	0x40
+#define NV_INT_ENABLE_SDEV_REMOVED	0x80
+#define NV_INT_ENABLE_PDEV_HOTPLUG	(NV_INT_ENABLE_PDEV_ADDED | \
+					NV_INT_ENABLE_PDEV_REMOVED)
+#define NV_INT_ENABLE_SDEV_HOTPLUG	(NV_INT_ENABLE_SDEV_ADDED | \
+					NV_INT_ENABLE_SDEV_REMOVED)
+#define NV_INT_ENABLE_HOTPLUG		(NV_INT_ENABLE_PDEV_HOTPLUG | \
+					NV_INT_ENABLE_SDEV_HOTPLUG)
+
+#define NV_INT_CONFIG			0x12
+#define NV_INT_CONFIG_METHD		0x01 // 0 = INT, 1 = SMI
+
+// For PCI config register 20
+#define NV_MCP_SATA_CFG_20		0x50
+#define NV_MCP_SATA_CFG_20_SATA_SPACE_EN	0x04
+
+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 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 void 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 void nv_check_hotplug_ck804(struct ata_host_set *host_set);
+
+enum nv_host_type
+{
+	GENERIC,
+	NFORCE2,
+	NFORCE3,
+	CK804
+};
+
+static struct pci_device_id nv_pci_tbl[] = {
+	{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_SATA,
+		PCI_ANY_ID, PCI_ANY_ID, 0, 0, NFORCE2 },
+	{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA,
+		PCI_ANY_ID, PCI_ANY_ID, 0, 0, NFORCE3 },
+	{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA2,
+		PCI_ANY_ID, PCI_ANY_ID, 0, 0, NFORCE3 },
+	{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA,
+		PCI_ANY_ID, PCI_ANY_ID, 0, 0, CK804 },
+	{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA2,
+		PCI_ANY_ID, PCI_ANY_ID, 0, 0, CK804 },
+	{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA,
+		PCI_ANY_ID, PCI_ANY_ID, 0, 0, CK804 },
+	{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA2,
+		PCI_ANY_ID, PCI_ANY_ID, 0, 0, CK804 },
+	{ PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
+		PCI_ANY_ID, PCI_ANY_ID,
+		PCI_CLASS_STORAGE_IDE<<8, 0xffff00, GENERIC },
+	{ 0, } /* terminate list */
+};
+
+#define NV_HOST_FLAGS_SCR_MMIO	0x00000001
+
+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);
+	void			(*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,
+	.probe			= nv_init_one,
+	.remove			= ata_pci_remove_one,
+};
+
+static Scsi_Host_Template nv_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,
+	.max_sectors		= ATA_MAX_SECTORS,
+	.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,
+	.ordered_flush		= 1,
+};
+
+static struct ata_port_operations nv_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,
+	.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,
+};
+
+/* 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,
+};
+
+MODULE_AUTHOR("NVIDIA");
+MODULE_DESCRIPTION("low-level driver for NVIDIA nForce SATA controller");
+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)
+{
+	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;
+
+	spin_lock_irqsave(&host_set->lock, flags);
+
+	for (i = 0; i < host_set->n_ports; i++) {
+		struct ata_port *ap;
+
+		ap = host_set->ports[i];
+		if (ap && (!(ap->flags & ATA_FLAG_PORT_DISABLED))) {
+			struct ata_queued_cmd *qc;
+
+			qc = ata_qc_from_tag(ap, ap->active_tag);
+			if (qc && (!(qc->tf.ctl & ATA_NIEN)))
+				handled += ata_host_intr(ap, qc);
+		}
+
+	}
+
+	if (host->host_desc->check_hotplug)
+		host->host_desc->check_hotplug(host_set);
+
+	spin_unlock_irqrestore(&host_set->lock, flags);
+
+	return IRQ_RETVAL(handled);
+}
+
+static u32 nv_scr_read (struct ata_port *ap, unsigned int sc_reg)
+{
+	struct ata_host_set *host_set = ap->host_set;
+	struct nv_host *host = host_set->private_data;
+
+	if (sc_reg > SCR_CONTROL)
+		return 0xffffffffU;
+
+	if (host->host_flags & NV_HOST_FLAGS_SCR_MMIO)
+		return readl((void*)ap->ioaddr.scr_addr + (sc_reg * 4));
+	else
+		return inl(ap->ioaddr.scr_addr + (sc_reg * 4));
+}
+
+static void nv_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
+{
+	struct ata_host_set *host_set = ap->host_set;
+	struct nv_host *host = host_set->private_data;
+
+	if (sc_reg > SCR_CONTROL)
+		return;
+
+	if (host->host_flags & NV_HOST_FLAGS_SCR_MMIO)
+		writel(val, (void*)ap->ioaddr.scr_addr + (sc_reg * 4));
+	else
+		outl(val, ap->ioaddr.scr_addr + (sc_reg * 4));
+}
+
+static void nv_host_stop (struct ata_host_set *host_set)
+{
+	struct nv_host *host = host_set->private_data;
+
+	// Disable hotplug event interrupts.
+	if (host->host_desc->disable_hotplug)
+		host->host_desc->disable_hotplug(host_set);
+
+	kfree(host);
+}
+
+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;
+	int rc;
+	u32 bar;
+
+        // Make sure this is a SATA controller by counting the number of bars
+        // (NVIDIA SATA controllers will always have six bars).  Otherwise,
+        // it's an IDE controller and we ignore it.
+	for (bar=0; bar<6; bar++)
+		if (pci_resource_start(pdev, bar) == 0)
+			return -ENODEV;
+
+	if (!printed_version++)
+		printk(KERN_DEBUG DRV_NAME " version " DRV_VERSION "\n");
+
+	rc = pci_enable_device(pdev);
+	if (rc)
+		goto err_out;
+
+	rc = pci_request_regions(pdev, DRV_NAME);
+	if (rc) {
+		pci_dev_busy = 1;
+		goto err_out_disable;
+	}
+
+	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;
+
+	rc = -ENOMEM;
+
+	ppi = &nv_port_info;
+	probe_ent = ata_pci_init_native_mode(pdev, &ppi);
+	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;
+
+	if (pci_resource_flags(pdev, 5) & IORESOURCE_MEM)
+		host->host_flags |= NV_HOST_FLAGS_SCR_MMIO;
+
+	if (host->host_flags & NV_HOST_FLAGS_SCR_MMIO) {
+		unsigned long base;
+
+		probe_ent->mmio_base = ioremap(pci_resource_start(pdev, 5),
+				pci_resource_len(pdev, 5));
+		if (probe_ent->mmio_base == NULL) {
+			rc = -EIO;
+			goto err_out_free_host;
+		}
+
+		base = (unsigned long)probe_ent->mmio_base;
+
+		probe_ent->port[0].scr_addr =
+			base + NV_PORT0_SCR_REG_OFFSET;
+		probe_ent->port[1].scr_addr =
+			base + NV_PORT1_SCR_REG_OFFSET;
+	} else {
+
+		probe_ent->port[0].scr_addr =
+			pci_resource_start(pdev, 5) | NV_PORT0_SCR_REG_OFFSET;
+		probe_ent->port[1].scr_addr =
+			pci_resource_start(pdev, 5) | NV_PORT1_SCR_REG_OFFSET;
+	}
+
+	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:
+	if (host->host_flags & NV_HOST_FLAGS_SCR_MMIO)
+		iounmap(probe_ent->mmio_base);
+err_out_free_host:
+	kfree(host);
+err_out_free_ent:
+	kfree(probe_ent);
+err_out_regions:
+	pci_release_regions(pdev);
+err_out_disable:
+	if (!pci_dev_busy)
+		pci_disable_device(pdev);
+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 void 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");
+	}
+}
+
+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)
+{
+	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);
+
+	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 void 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");
+	}
+}
+
+static int __init nv_init(void)
+{
+	return pci_module_init(&nv_pci_driver);
+}
+
+static void __exit nv_exit(void)
+{
+	pci_unregister_driver(&nv_pci_driver);
+}
+
+module_init(nv_init);
+module_exit(nv_exit);