Index: linux-2.6.22-rc7/drivers/ata/libata-core.c
===================================================================
--- linux-2.6.22-rc7.orig/drivers/ata/libata-core.c
+++ linux-2.6.22-rc7/drivers/ata/libata-core.c
@@ -70,6 +70,7 @@ const unsigned long sata_deb_timing_long
 static unsigned int ata_dev_init_params(struct ata_device *dev,
 					u16 heads, u16 sectors);
 static unsigned int ata_dev_set_xfermode(struct ata_device *dev);
+static unsigned int ata_dev_set_AN(struct ata_device *dev);
 static void ata_dev_xfermask(struct ata_device *dev);
 
 unsigned int ata_print_id = 1;
@@ -2002,6 +2003,22 @@ int ata_dev_configure(struct ata_device 
 		}
 		dev->cdb_len = (unsigned int) rc;
 
+		/*
+		 * check to see if this ATAPI device supports
+		 * Asynchronous Notification
+		 */
+		if ((ap->flags & ATA_FLAG_AN) && ata_id_has_AN(id)) {
+			int err;
+			/* issue SET feature command to turn this on */
+			err = ata_dev_set_AN(dev);
+			if (err)
+				ata_dev_printk(dev, KERN_ERR,
+						"unable to set AN, err %x\n",
+						err);
+			else
+				dev->flags |= ATA_DFLAG_AN;
+		}
+
 		if (ata_id_cdb_intr(dev->id)) {
 			dev->flags |= ATA_DFLAG_CDB_INTR;
 			cdb_intr_string = ", CDB intr";
@@ -3958,6 +3975,41 @@ static unsigned int ata_dev_set_xfermode
 }
 
 /**
+ *	ata_dev_set_AN - Issue SET FEATURES - SATA FEATURES
+ *	@dev: Device to which command will be sent
+ *
+ *	Issue SET FEATURES - SATA FEATURES command to device @dev
+ *	on port @ap with sector count set to indicate Asynchronous
+ *	Notification feature
+ *
+ *	LOCKING:
+ *	PCI/etc. bus probe sem.
+ *
+ *	RETURNS:
+ *	0 on success, AC_ERR_* mask otherwise.
+ */
+static unsigned int ata_dev_set_AN(struct ata_device *dev)
+{
+	struct ata_taskfile tf;
+	unsigned int err_mask;
+
+	/* set up set-features taskfile */
+	DPRINTK("set features - SATA features\n");
+
+	ata_tf_init(dev, &tf);
+	tf.command = ATA_CMD_SET_FEATURES;
+	tf.feature = SETFEATURES_SATA_ENABLE;
+	tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
+	tf.protocol = ATA_PROT_NODATA;
+	tf.nsect = SATA_AN;
+
+	err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0);
+
+	DPRINTK("EXIT, err_mask=%x\n", err_mask);
+	return err_mask;
+}
+
+/**
  *	ata_dev_init_params - Issue INIT DEV PARAMS command
  *	@dev: Device to which command will be sent
  *	@heads: Number of heads (taskfile parameter)
Index: linux-2.6.22-rc7/include/linux/ata.h
===================================================================
--- linux-2.6.22-rc7.orig/include/linux/ata.h
+++ linux-2.6.22-rc7/include/linux/ata.h
@@ -205,6 +205,12 @@ enum {
 
 	SETFEATURES_SPINUP	= 0x07, /* Spin-up drive */
 
+	SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
+	SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
+
+	/* SETFEATURE Sector counts for SATA features */
+	SATA_AN			= 0x05,  /* Asynchronous Notification */
+
 	/* ATAPI stuff */
 	ATAPI_PKT_DMA		= (1 << 0),
 	ATAPI_DMADIR		= (1 << 2),	/* ATAPI data dir:
@@ -310,6 +316,9 @@ struct ata_taskfile {
 #define ata_id_queue_depth(id)	(((id)[75] & 0x1f) + 1)
 #define ata_id_removeable(id)	((id)[0] & (1 << 7))
 #define ata_id_has_dword_io(id)	((id)[50] & (1 << 0))
+#define ata_id_has_AN(id)	\
+	( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \
+	  ((id)[78] & (1 << 5)) )
 #define ata_id_iordy_disable(id) ((id)[49] & (1 << 10))
 #define ata_id_has_iordy(id) ((id)[49] & (1 << 9))
 #define ata_id_u32(id,n)	\
Index: linux-2.6.22-rc7/include/linux/libata.h
===================================================================
--- linux-2.6.22-rc7.orig/include/linux/libata.h
+++ linux-2.6.22-rc7/include/linux/libata.h
@@ -136,6 +136,7 @@ enum {
 	ATA_DFLAG_NCQ		= (1 << 3), /* device supports NCQ */
 	ATA_DFLAG_FLUSH_EXT	= (1 << 4), /* do FLUSH_EXT instead of FLUSH */
+	ATA_DFLAG_AN		= (1 << 5), /* device supports Async notification */
 	ATA_DFLAG_IPM		= (1 << 6), /* device supports interface PM */
 	ATA_DFLAG_CFG_MASK	= (1 << 8) - 1,
 
 	ATA_DFLAG_PIO		= (1 << 8), /* device limited to PIO mode */
@@ -174,6 +175,7 @@ enum {
 	ATA_FLAG_IGN_SIMPLEX	= (1 << 15), /* ignore SIMPLEX */
 	ATA_FLAG_NO_IORDY	= (1 << 16), /* controller lacks iordy */
 	ATA_FLAG_ACPI_SATA	= (1 << 17), /* need native SATA ACPI layout */
+	ATA_FLAG_AN		= (1 << 18), /* controller supports AN */
 
 	/* The following flag belongs to ap->pflags but is kept in
 	 * ap->flags because it's referenced in many LLDs and will be
@@ -708,6 +710,7 @@ extern void ata_host_init(struct ata_hos
 extern int ata_scsi_detect(struct scsi_host_template *sht);
 extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
 extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *));
+extern void ata_scsi_media_change_notify(struct ata_device *atadev);
 extern void ata_sas_port_destroy(struct ata_port *);
 extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
 					   struct ata_port_info *, struct Scsi_Host *);
Index: linux-2.6.22-rc7/drivers/ata/ahci.c
===================================================================
--- linux-2.6.22-rc7.orig/drivers/ata/ahci.c
+++ linux-2.6.22-rc7/drivers/ata/ahci.c
@@ -325,14 +325,15 @@ static const struct ata_port_operations 
 static const struct ata_port_info ahci_port_info[] = {
 	/* board_ahci */
 	{
-		.flags		= AHCI_FLAG_COMMON,
+		.flags		= AHCI_FLAG_COMMON | ATA_FLAG_AN,
 		.pio_mask	= 0x1f, /* pio0-4 */
 		.udma_mask	= 0x7f, /* udma0-6 ; FIXME */
 		.port_ops	= &ahci_ops,
 	},
 	/* board_ahci_pi */
 	{
-		.flags		= AHCI_FLAG_COMMON | AHCI_FLAG_HONOR_PI,
+		.flags		= AHCI_FLAG_COMMON | AHCI_FLAG_HONOR_PI |
+				  ATA_FLAG_AN,
 		.pio_mask	= 0x1f, /* pio0-4 */
 		.udma_mask	= 0x7f, /* udma0-6 ; FIXME */
 		.port_ops	= &ahci_ops,
@@ -1248,6 +1249,28 @@ static void ahci_host_intr(struct ata_po
 		return;
 	}
 
+	if (status & PORT_IRQ_SDB_FIS) {
+		/*
+		 * if this is an ATAPI device with AN turned on,
+		 * then we should interrogate the device to
+		 * determine the cause of the interrupt
+		 *
+		 * for AN - this we should check the SDB FIS
+		 * and find the I and N bits set
+		 */
+		const u32 *f = pp->rx_fis + RX_FIS_SDB;
+
+		/* check the 'N' bit in word 0 of the FIS */
+		if (f[0] & (1 << 15)) {
+			int port_addr =  ((f[0] & 0x00000f00) >> 8);
+			struct ata_device *adev;
+			if (port_addr < ATA_MAX_DEVICES) {
+				adev = &ap->device[port_addr];
+				if (adev->flags & ATA_DFLAG_AN)
+					ata_scsi_media_change_notify(adev);
+			}
+		}
+	}
 	if (ap->sactive)
 		qc_active = readl(port_mmio + PORT_SCR_ACT);
 	else
Index: linux-2.6.22-rc7/drivers/scsi/sr.c
===================================================================
--- linux-2.6.22-rc7.orig/drivers/scsi/sr.c
+++ linux-2.6.22-rc7/drivers/scsi/sr.c
@@ -603,7 +603,10 @@ static int sr_probe(struct device *dev)
 
 	dev_set_drvdata(dev, cd);
 	disk->flags |= GENHD_FL_REMOVABLE;
+	if (sdev->media_change_notify)
+		disk->flags |= GENHD_FL_MEDIA_CHANGE_NOTIFY;
 	add_disk(disk);
+	sdev->disk = disk;
 
 	sdev_printk(KERN_DEBUG, sdev,
 		    "Attached scsi CD-ROM %s\n", cd->cdi.name);
Index: linux-2.6.22-rc7/include/scsi/scsi_device.h
===================================================================
--- linux-2.6.22-rc7.orig/include/scsi/scsi_device.h
+++ linux-2.6.22-rc7/include/scsi/scsi_device.h
@@ -126,7 +126,7 @@ struct scsi_device {
 	unsigned fix_capacity:1;	/* READ_CAPACITY is too high by 1 */
 	unsigned guess_capacity:1;	/* READ_CAPACITY might be too high by 1 */
 	unsigned retry_hwerror:1;	/* Retry HARDWARE_ERROR */
-
+	unsigned media_change_notify:1; /* dev supports async media notify */
 	unsigned int device_blocked;	/* Device returned QUEUE_FULL. */
 
 	unsigned int max_device_blocked; /* what device_blocked counts down from  */
@@ -140,7 +140,7 @@ struct scsi_device {
 
 	struct device		sdev_gendev;
 	struct class_device	sdev_classdev;
-
+	struct gendisk 		*disk;
 	struct execute_work	ew; /* used to get process context on put */
 
 	enum scsi_device_state sdev_state;
Index: linux-2.6.22-rc7/drivers/scsi/sd.c
===================================================================
--- linux-2.6.22-rc7.orig/drivers/scsi/sd.c
+++ linux-2.6.22-rc7/drivers/scsi/sd.c
@@ -1668,8 +1668,12 @@ static int sd_probe(struct device *dev)
 	if (sdp->removable)
 		gd->flags |= GENHD_FL_REMOVABLE;
 
+	if (sdp->media_change_notify)
+		gd->flags |= GENHD_FL_MEDIA_CHANGE_NOTIFY;
+
 	dev_set_drvdata(dev, sdkp);
 	add_disk(gd);
+	sdp->disk = gd;
 
 	sd_printk(KERN_NOTICE, sdkp, "Attached SCSI %sdisk\n",
 		  sdp->removable ? "removable " : "");
Index: linux-2.6.22-rc7/drivers/ata/libata-scsi.c
===================================================================
--- linux-2.6.22-rc7.orig/drivers/ata/libata-scsi.c
+++ linux-2.6.22-rc7/drivers/ata/libata-scsi.c
@@ -772,6 +772,9 @@ static void ata_scsi_dev_config(struct s
 		blk_queue_max_hw_segments(q, q->max_hw_segments - 1);
 	}
 
+	if (dev->flags & ATA_DFLAG_AN)
+		sdev->media_change_notify = 1;
+
 	if (dev->flags & ATA_DFLAG_NCQ) {
 		int depth;
 
@@ -3053,6 +3056,22 @@ static void ata_scsi_remove_dev(struct a
 }
 
 /**
+ *	ata_scsi_media_change_notify - send media change event
+ *	@atadev: Pointer to the disk device with media change event
+ *
+ *	Tell the block layer to send a media change notification
+ *	event.
+ *
+ * 	LOCKING:
+ * 	interrupt context, may not sleep.
+ */
+void ata_scsi_media_change_notify(struct ata_device *atadev)
+{
+	genhd_media_change_notify(atadev->sdev->disk);
+}
+EXPORT_SYMBOL_GPL(ata_scsi_media_change_notify);
+
+/**
  *	ata_scsi_hotplug - SCSI part of hotplug
  *	@work: Pointer to ATA port to perform SCSI hotplug on
  *