Commit f41e5461 authored by Liam R. Howlett's avatar Liam R. Howlett Committed by David S. Miller

sunvdc: Add support for setting physical sector size

Physical sector size is supported in v1.2 of the vDisk protocol and
should be set if available.  If protocol version 1.2 is used and the
physical disk size is unavailable, then the disk is considered busy.
Signed-off-by: default avatarLiam R. Howlett <Liam.Howlett@Oracle.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 269d8523
......@@ -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;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment