1 .\" Copyright (c) 2018 VMware, Inc.
3 .\" SPDX-License-Identifier: (BSD-2-Clause OR GPL-2.0)
11 .Nd VMware Paravirtual SCSI Controller
13 To compile this driver into the kernel,
14 place the following line in your
15 kernel configuration file:
16 .Bd -ragged -offset indent
22 Alternatively, to load the driver as a
23 module at boot time, place the following line in
25 .Bd -literal -offset indent
29 The following tunables are settable from the
32 .It Va hw.pvscsi.request_ring_pages
33 controls how many pages are allocated for the device request ring.
34 A non-positive value will cause the driver to choose the value based on device
36 A non-zero value will use that many number of pages up to a maximum of 32.
37 The default setting is 0.
38 .It Va hw.pvscsi.max_queue_depth
39 controls the queue size for the adapter.
40 A non-positive value will cause the driver to choose the value based on number
41 of request ring pages.
42 A non-zero value will set the queue size up to a maximum allowed by the number
43 of request ring pages.
45 .It Va hw.pvscsi.use_msg
46 setting to nonzero value enables the use of the PVSCSI message queue allowing
47 for disk hot-add and remove without manual rescan needed.
49 .It Va hw.pvscsi.use_msi
50 setting to nonzero value enables the use of MSI interrupts.
52 .It Va hw.pvscsi.use_msix
53 setting to nonzero value enables the use of MSI-X interrupts.
55 .It Va hw.pvscsi.use_req_call_threshold
56 setting to nonzero value enables the request call threshold functionality.
63 driver provides support for the VMware Paravirtual SCSI Controller (PVSCSI) in
64 virtual machines by VMware.
71 driver first appeared in
74 .An Vishal Bhakta Aq Mt vbhakta@vmware.com .