applied the attached slightly modified patch. main changes:
* SCSI stuff has not been applied yet, so libata's notify is a no-op for now
* fixed endian bug in SDB FIS handling
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 757369e..c41bd2c 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1366,6 +1366,30 @@ static void ahci_port_intr(struct ata_port *ap)
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 __le32 *f = pp->rx_fis + RX_FIS_SDB;
+ u32 f0 = le32_to_cpu(f[0]);
+
+ /* check the 'N' bit in word 0 of the FIS */
+ if (f0 & (1 << 15)) {
+ int port_addr = ((f0 & 0x00000f00) >> 8);
+ struct ata_device *adev;
+ if (port_addr < ATA_MAX_DEVICES) {
+ adev = &ap->link.device[port_addr];
+ if (adev->flags & ATA_DFLAG_AN)
+ ata_scsi_media_change_notify(adev);
+ }
+ }
+ }
+
if (ap->link.sactive)
qc_active = readl(port_mmio + PORT_SCR_ACT);
else
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 7d66c98..f0f586b 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -3160,6 +3160,24 @@ static void ata_scsi_handle_link_detach(struct ata_link
*link)
}
/**
+ * 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)
+{
+#ifdef OTHER_AN_PATCHES_HAVE_BEEN_APPLIED
+ scsi_device_event_notify(atadev->sdev, SDEV_MEDIA_CHANGE);
+#endif
+}
+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
*
diff --git a/include/linux/libata.h b/include/linux/libata.h
index d1bd9f5..08d6a9a 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -754,6 +754,7 @@ extern void ata_host_init(struct ata_host *, struct device
*,
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 *);
