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path: root/drivers/block/sunvdc.c
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Diffstat (limited to 'drivers/block/sunvdc.c')
-rw-r--r--drivers/block/sunvdc.c18
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/block/sunvdc.c b/drivers/block/sunvdc.c
index cab157331c4e..3f3a3ab3d50a 100644
--- a/drivers/block/sunvdc.c
+++ b/drivers/block/sunvdc.c
@@ -34,6 +34,7 @@ MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_MODULE_VERSION);
#define VDC_TX_RING_SIZE 512
+#define VDC_DEFAULT_BLK_SIZE 512
#define WAITING_FOR_LINK_UP 0x01
#define WAITING_FOR_TX_SPACE 0x02
@@ -73,6 +74,7 @@ struct vdc_port {
u32 vdisk_size;
u8 vdisk_type;
u8 vdisk_mtype;
+ u32 vdisk_phys_blksz;
char disk_name[32];
};
@@ -88,6 +90,7 @@ static inline struct vdc_port *to_vdc_port(struct vio_driver_state *vio)
/* Ordered from largest major to lowest */
static struct vio_version vdc_versions[] = {
+ { .major = 1, .minor = 2 },
{ .major = 1, .minor = 1 },
{ .major = 1, .minor = 0 },
};
@@ -271,6 +274,11 @@ static int vdc_handle_attr(struct vio_driver_state *vio, void *arg)
if (pkt->max_xfer_size < port->max_xfer_size)
port->max_xfer_size = pkt->max_xfer_size;
port->vdisk_block_size = pkt->vdisk_block_size;
+
+ port->vdisk_phys_blksz = VDC_DEFAULT_BLK_SIZE;
+ if (vdc_version_supported(port, 1, 2))
+ port->vdisk_phys_blksz = pkt->phys_block_size;
+
return 0;
} else {
printk(KERN_ERR PFX "%s: Attribute NACK\n", vio->name);
@@ -754,6 +762,12 @@ static int probe_disk(struct vdc_port *port)
if (err)
return err;
+ /* Using version 1.2 means vdisk_phys_blksz should be set unless the
+ * disk is reserved by another system.
+ */
+ if (vdc_version_supported(port, 1, 2) && !port->vdisk_phys_blksz)
+ return -ENODEV;
+
if (vdc_version_supported(port, 1, 1)) {
/* vdisk_size should be set during the handshake, if it wasn't
* then the underlying disk is reserved by another system
@@ -829,6 +843,8 @@ static int probe_disk(struct vdc_port *port)
}
}
+ blk_queue_physical_block_size(q, port->vdisk_phys_blksz);
+
pr_info(PFX "%s: %u sectors (%u MB) protocol %d.%d\n",
g->disk_name,
port->vdisk_size, (port->vdisk_size >> (20 - 9)),
@@ -910,7 +926,7 @@ static int vdc_port_probe(struct vio_dev *vdev, const struct vio_device_id *id)
if (err)
goto err_out_free_port;
- port->vdisk_block_size = 512;
+ port->vdisk_block_size = VDC_DEFAULT_BLK_SIZE;
port->max_xfer_size = ((128 * 1024) / port->vdisk_block_size);
port->ring_cookies = ((port->max_xfer_size *
port->vdisk_block_size) / PAGE_SIZE) + 2;