ata: ahci: find eSATA ports and flag them as removable
If the AHCI ports' HPCP or ESP bits are set, the port
should be considered external (e.g. eSATA) and is marked
as removable. Userspace tools like udisks then treat it
like an usb drive.
With this patch applied, when I plug a drive into the esata port,
KDE pops up a window asking what to do with the drives(s), just
like it does for any random USB stick.
Removability is indicated to the upper layers by way of the
SCSI RMB bit, as I haven't found another way to signal
userspace to treat a sata disk like any usb stick.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c
index d256a66..2fa551a 100644
--- a/drivers/ata/libahci.c
+++ b/drivers/ata/libahci.c
@@ -1117,6 +1117,7 @@
int port_no, void __iomem *mmio,
void __iomem *port_mmio)
{
+ struct ahci_host_priv *hpriv = ap->host->private_data;
const char *emsg = NULL;
int rc;
u32 tmp;
@@ -1138,6 +1139,12 @@
writel(tmp, port_mmio + PORT_IRQ_STAT);
writel(1 << port_no, mmio + HOST_IRQ_STAT);
+
+ /* mark esata ports */
+ tmp = readl(port_mmio + PORT_CMD);
+ if ((tmp & PORT_CMD_HPCP) ||
+ ((tmp & PORT_CMD_ESP) && (hpriv->cap & HOST_CAP_SXS)))
+ ap->pflags |= ATA_PFLAG_EXTERNAL;
}
void ahci_init_controller(struct ata_host *host)