CDDL HEADER START The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License. You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License. When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner] CDDL HEADER END Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. pcitool 1M
"NAME"
pcitool - interrupt routing tool
"SYNOPSIS"
/usr/sbin/pcitool pci@<unit-address>|\f I niu@<unit-address> -i <[cpu#],ino#> | all [ -r [ -c ] | -w <cpu#> [ -g ] ] [ -v ] [ -q ]
/usr/sbin/pcitool pci@<unit-address> -m <[cpu#],msi#> | all [ -r [ -c ] | -w <cpu#> [ -g ] ] [ -v ] [ -q ]
/usr/sbin/pcitool [ -h ]
"DESCRIPTION"
PCItool is a low-level tool which provides a facility for getting and setting
interrupt routing information.
Interrupt Routing
The
pcitool -i command displays device and CPU routing information for
INOs on a given nexus, and allows rerouting of a given INO or INO group to a
specific CPU. Use the
pcitool -m command to retrieve and reroute
MSI/
Xs.
On SPARC platforms, the INO is mapped to an interrupt mondo, where as one or
more
MSI/
Xs are mapped to an INO. So, INO and
MSI/
Xs are individually
retargetable. Use "-i" option to retrieve or reroute a given INO, where as
use "-m" option for
MSI/
Xs.
On x86 platforms, both INOs and
MSI/
Xs are mapped to the same interrupt vectors.
Use "-i" option to retrieve and reroute any interrupt vectors (both INO and
MSI/
Xs). So, "-m" option is not required on x86 platforms. Hence it is not
supported.
[cpu#] is available on x86 platform, is to identify exclusive vector with ino#
at the same time. [cpu#] is not supported on SPARC platform.
Required privileges
The user must have all privileges in order to access interrupt
information. A regular user can access interrupt information when
su(1M) to root or granted the "Maintenance and Repair" rights
profile in the
user_attr file. See
user_attr(4) and
rbac(5).
Commandline options
-r [ -c ]
Display device and CPU routing information for INOs on a given nexus.
The device path and instance number of each device for each displayed INO will
be shown. On some platforms, interrupts dedicated to the root complex are
indicated with "(Internal)" appended to their pathname.
Dump interrupt controller information with -c.
If neither -r nor -w are provided on the commandline, -r is assumed.
The command for showing all INOs on /pci@0,0 is:
# pcitool /pci@0,0 -i all
The command for showing ino <0x0,0x21> on the same root nexus, along with sample
output, is:
On x86 platform:
# pcitool /pci@0,0 -i 0,21
0x0,0x21: mpt 0 /pci@7b,0/pci1022,7458@11/pci1000,3060@2
On SPARC platform:
# pcitool /pci@0,0 -i 21
0x0,0x21: mpt 0 /pci@7b,0/pci1022,7458@11/pci1000,3060@2
The command for showing MSI 0x1 on the same root nexus,
along with sample output, is:
# pcitool /pci@0,0 -m 0x1
0x0,0x1: pcieb 0 /pci@7b,0/pci10de,5d@e
-w
<cpu#> [ -g ]
Route the given INO or MSI/X to the given CPU. Display the new and original
routing information. The INO or MSI/X must be specified.
Successful rerouting ino 21 above from cpu 0 to cpu 1 gives the following
output:
On x86 platform:
# pcitool /pci@0,0 -i 0,21 -w 1
0x0,0x21 -> 0x1,0x20
On SPARC platform:
# pcitool /pci@0,0 -i 21 -w 1
0x0,0x21 -> 0x1,0x21
Successful rerouting msi 1 above from cpu 1 to cpu 0 gives the following
output:
# pcitool /pci@0,0 -m 1 -w 0
0x1,0x1 -> 0x0,0x1
On some platforms (such as X86) multiple MSI interrupts of a single function
need to be rerouted together. Use -g to do this. -g works only on supported
platforms and only for groups of MSI interrupts. (A "group" of 1 is accepted.)
When -g is used, the vector provided must be the lowest-numbered vector of the
group. The size of the group is determined internally.
Successful rerouting a group of INOs starting at 24 from cpu 0 to cpu 1 gives
the following output:
On x86 platform:
# pcitool /pci@0,0 -i 3,24 -w 1 -g
0x3,0x24 => 0x1,0x22
On SPARC platform:
# pcitool /pci@0,0 -i 24 -w 1 -g
0x3,0x24 => 0x1,0x22
-v
Verbose output.
-q
No errors reported as messages. Unix error status still returned by
program, however.
EXIT STATUS
The following error statuses are returned to the shell:
0
No error
EINVAL
Out-of-range, misaligned or otherwise invalid argument has been passed in.
ETIME
Timeout waiting for pending interrupt to settle before changing interrupts to
a new CPU.
EIO
An IO error occurred.
FILES
/
usr/
sbin/
pcitool
"ATTRIBUTES"
See attributes(5) for descriptions of the following attributes:
_________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|______________________|__________________________________|
| Architecture | PCI-based systems |
|______________________|__________________________________|
| Availability | SUNWio-tools |
|______________________|__________________________________|
| Interface Stability | Volatile |
|______________________|__________________________________|
SEE ALSO
pci(4),
su(1M),
user_attr(4),
rbac(5)
NOTES
All values are entered in hex.
Not all commands are applicable to all platforms.
REFERENCES
PCI specification (available from www.pcisig.org)