'\" te .\" Copyright (c) 2006, Sun Microsystems, Inc. All Rights Reserved. .\" 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] .TH CFGADM_PCI 8 "June 20, 2021" .SH NAME cfgadm_pci \- PCI, CompactPCI, and PCI Express Hotplug hardware specific commands for cfgadm .SH SYNOPSIS .nf \fB/usr/sbin/cfgadm\fR [\fB-f\fR] [\fB-y\fR | \fB-n\fR] [\fB-v\fR] [\fB-o\fR \fIhardware_options\fR] \fB-c\fR \fIfunction\fR \fIap_id\fR [\fIap_id\fR] .fi .LP .nf \fB/usr/sbin/cfgadm\fR [\fB-f\fR] [\fB-y\fR | \fB-n\fR] [\fB-v\fR] [\fB-o\fR \fIhardware_options\fR] \fB-x\fR \fIhardware_function\fR \fIap_id\fR [\fIap_id\fR] .fi .LP .nf \fB/usr/sbin/cfgadm\fR [\fB-v\fR] [\fB-s\fR \fIlisting_options\fR] [\fB-o\fR \fIhardware_options\fR] [\fB-l\fR [\fIap_id\fR | \fIap_type\fR]] .fi .LP .nf \fB/usr/sbin/cfgadm\fR [\fB-v\fR] [\fB-o\fR \fIharware_options\fR] \fB-t\fR \fIap_id\fR [\fIap_id\fR] .fi .LP .nf \fB/usr/sbin/cfgadm\fR [\fB-v\fR] [\fB-o\fR \fIhardware_function\fR] \fB-h\fR [\fIap_id\fR| \fIap_type\fR] .fi .SH DESCRIPTION The PCI hardware specific library, \fB/usr/lib/cfgadm/pci.so.1\fR, provides the support for hot plugging PCI, CompactPCI, and PCI Express adapter cards into the respective hot pluggable slots in a system that is hot plug capable, through the \fBcfgadm\fR command (see \fBcfgadm\fR(8)). Hot plug administrative models between PCI, CompactPCI, and PCI Express remain the same except where noted in this document. .sp .LP For PCI Hot Plug, each hot plug slot on a specific PCI bus is represented by an attachment point of that specific PCI bus. .sp .LP An attachment point consist of two parts: a receptacle and an occupant. The \fBreceptacle\fR under PCI hot plug is usually referred to as the physical hot pluggable slot; and the \fBoccupant\fR is usually referred to as the PCI adapter card that plugs into the slot. .sp .LP Attachment points are named through \fBap_id\fRs. There are two types of \fBap_id\fRs: logical and physical. The physical \fBap_id\fR is based on the physical pathname, that is, \fB/devices/pci@1/hpc0_slot3\fR, whereas the logical \fBap_id\fR is a shorter, and more user-friendly name. For PCI hot pluggable slots, the logical \fBap_id\fR is usually the corresponding hot plug controller driver name plus the logical slot number, that is, \fBpci0:hpc0slot1\fR; PCI nexus driver, with hot plug controller driver named \fBhpc\fR and slot number \fB1\fR. The \fBap_type\fR for Hot plug PCI is \fBpci\fR. .sp .LP Note that the \fBap_type\fR is not the same as the information in the \fBType\fR field. .sp .LP See the \fI\fR for a detailed description of the hot plug procedure. .SS "PCI Express ap_id naming" For attachment points located in a PCI Express hierarchy (that is, the parent or an ancestor is a PCI Express device), including attachment points which are not PCI Express devices themselves, the following naming scheme is used: .sp .in +2 .nf Grammar: APID : absolute-slot-path absolute-slot-path : \fIslot-path\fR[\fI:slot-path\fR[\fI:slotpath\fR ...]] slot-path : [\fIfru-id\fR.]\fIslot-id\fR where \fIfru-id\fR indicates the chassis FRU, if any, containing the \fIslot-id\fR fru-id : \fIfru-type\fR[\fIserialid#\fR] where \fIfru-type\fR is "iob" for PCI Express expansion chassis, followed by its serial number \fIserialid#\fR, if available slot-id: \fIslot-name\fR | \fIdevice-type\fR \fIphysical-slot#\fR |\e \fInexus-driver-name\fR \fInexus-driver-instance\fR.\e \fIdevice-type\fR \fIpci-device-number\fR .fi .in -2 .sp .sp .LP where \fIslot-name\fR is a name assigned by the platform or hardware itself; \fIdevice-type\fR is either "pcie"for PCI Express devices or "pci" for PCI devices; \fInexus-driver-name\fR is the driver name for the device component; \fIphysical-slot#\fR is the hardware slot number; and \fIpci-device-number\fR is the PCI device number in standard PCI nomenclature. .sp .LP First, an \fIabsolute-slot-path\fR is constructed that attempts to describe the attachment point's topological location in more physically identifiable terms for the user. This \fIabsolute-slot-path\fR consists of \fIslot-path\fR components each separated by a ":" (colon). The leaf or left-most \fIslot-path\fR component describes the device of the attachment point itself while its right adjacent \fIslot-path\fR component up to the right or top-most \fIslot-path\fR component describes the parent up to the root devices, respectively. .sp .LP Each \fIslot-path\fR consists of a \fIslot-id\fR optionally preceded by an \fIfru-id\fR, which indicates an expansion chassis containing the device described by \fIslot-id\fR (detailed below). \fIfru-id\fR consists of \fIfru-type\fR followed by an optional \fIserialid#\fR. \fIfru-type\fR is "iob" for PCI Express expansion chassis types, while \fIserialid#\fR is either a 64-bit hexadecimal number indicating a raw serial number obtained from the expansion chassis hardware, or a 4 upper-case ASCII character sequence for Sun branded expansion chassis. .sp .LP Each \fIslot-id\fR consists of one of three possible forms: .sp .ne 2 .na \fBslot-id form (1)\fR .ad .sp .6 .RS 4n \fIslot-names\fR .RE .sp .ne 2 .na \fBslot-id form (2)\fR .ad .sp .6 .RS 4n \fIdevice-type\fR \fIphysical-slot#\fR .RE .sp .ne 2 .na \fBslot-id form (3)\fR .ad .sp .6 .RS 4n \fInexus-driver-name\fR \fInexus-driver-instance\fR. \fIdevice-type\fR \fIpci-device-number\fR .RE .sp .LP The precedence of which form to select flows from the lowest form number to the highest form number, or from top to bottom as described above. If a form cannot be successfully constructed, then the next numerically higher form is attempted. .sp .LP The \fIslot-names\fR in "slot-id form (1)" is taken from the "slot-names" property of the corresponding node in the device tree and is a name assigned by hardware or the platform. This format is not predefined or established. .sp .LP In "slot-id form (2)", \fIdevice-type\fR indicates the device type of the component's slot, and is either "pcie" for PCI Express or "pci" for PCI, while \fIphysical-slot#\fR, take from the "physical-slot#" property of its corresponding device node, indicates the hardware slot number of the component. .sp .LP "slot-id form (3)" is used when all other forms cannot successfully be constructed, and is considered to be the default form. \fInexus-driver-name\fR is the component's driver name; \fInexus-driver-instance\fR is such driver's instance; \fIdevice-type\fR is the same as described in form (2); \fIpci-device-type\fR is the PCI device number as described and used for device configuration cycles in standard PCI nomenclature. .sp .LP In summary of the \fIslot-path\fR component, expanding the optional FRU component that may precede it, \fIslot-path\fR will consist one of the following forms in order: .sp .in +2 .nf (1) [ iob[serialid#]. ] slot-names (2) [ iob[serialid#]. ] device_type physical_slot# (2) [ iob[serialid#]. ] nexus-driver-name nexus-driver-instance. device_type pci-device-number .fi .in -2 .sp .sp .LP Lastly, the final form of the actual \fIap_id\fR name used in \fBcfgadm\fR is decided as follows, specified in order of precedence: .sp .ne 2 .na \fBap_id form (1)\fR .ad .sp .6 .RS 4n if the \fIabsolute-slot-path\fR can fit within the fixed length limit of \fBcfgadm\fR's \fIap_id\fR field, then \fIabsolute-slot-path\fR itself is used .RE .sp .ne 2 .na \fBap_id form (2)\fR .ad .sp .6 .RS 4n (\fIabsolute-slot-path\fR exceeds the \fIap_id\fR length limit) if the last \fIslot_path\fR component is contained within an expansion chassis, and it contains a \fIserialid#\fR, then the last \fIslot_path\fR component is used. The requirement for a \fIserialid#\fR in this form is to ensure a globally unique \fIap_id\fR. .RE .sp .ne 2 .na \fBap_id form (3)\fR .ad .sp .6 .RS 4n (\fIabsolute-slot-path\fR exceeds the \fIap_id\fR length limit) the default form, "slot-id form (3)", of the last \fIslot_path\fR component is used .RE .sp .LP Whichever final \fIap_id\fR name is used, the \fIabsolute-slot-path\fR is stored in the Information ("info") field which can be displayed using the \fB-s\fR or \fB-v\fR options. This information can be used to physically locate any \fIap_id\fRs named using "ap_id form (2)" or "ap_id form (3)". The \fIabsolute-slot-path\fR is transformed slightly when stored in the information field, by the replacement of a colon (":") with forward slashes ("/") to more closely denote a topological context. The \fIabsolute-slot-path\fR can include \fIslot-path\fR components that are not hotpluggable above the leaf or right-most \fIslot-path\fR component up to the onboard host slot. .sp .LP See the EXAMPLES section for a list of hotpluggable examples. .SH OPTIONS The following options are supported: .sp .ne 2 .na \fB\fB-c\fR \fIfunction\fR\fR .ad .sp .6 .RS 4n The following \fIfunction\fRs are supported for PCI hot pluggable slots: .sp .ne 2 .na \fBconfigure\fR .ad .sp .6 .RS 4n Configure the PCI device in the slot to be used by Solaris. .RE .sp .ne 2 .na \fBconnect\fR .ad .sp .6 .RS 4n Connect the slot to PCI bus. .RE .sp .ne 2 .na \fBdisconnect\fR .ad .sp .6 .RS 4n Disconnect the slot from the PCI bus. .RE .sp .ne 2 .na \fBinsert\fR .ad .sp .6 .RS 4n Not supported. .RE .sp .ne 2 .na \fBremove\fR .ad .sp .6 .RS 4n Not supported. .RE .sp .ne 2 .na \fBunconfigure\fR .ad .sp .6 .RS 4n Logically remove the PCI device's resources from the system. .RE .RE .sp .ne 2 .na \fB\fB-f\fR\fR .ad .sp .6 .RS 4n Not supported. .RE .sp .ne 2 .na \fB\fB-h\fR \fIap_id\fR | \fIap_type\fR\fR .ad .sp .6 .RS 4n Print out PCI hot plug specific help message. .RE .sp .ne 2 .na \fB\fB-l\fR \fIlist\fR\fR .ad .sp .6 .RS 4n List the values of PCI Hot Plug slots. .RE .sp .ne 2 .na \fB\fB-o\fR \fIhardware_options\fR\fR .ad .sp .6 .RS 4n No hardware specific options are currently defined. .RE .sp .ne 2 .na \fB\fB-s\fR \fIlisting_options\fR\fR .ad .sp .6 .RS 4n Same as the generic \fBcfgadm\fR(8). .RE .sp .ne 2 .na \fB\fB-t\fR \fIap_id\fR\fR .ad .sp .6 .RS 4n This command is only supported on platforms which support testing capability on the slot. .RE .sp .ne 2 .na \fB\fB-v\fR\fR .ad .sp .6 .RS 4n Execute in verbose mode. .sp When the \fB-v\fR option is used with the \fB-l\fR option, the \fBcfgadm\fR command outputs information about the attachment point. For attachment points located in a PCI Express hierarhcy, the Information field will contain the attachment point's absolute slot path location, including any hardware or platform specific labeling information for each component in the slot path. Each component in the slot path will be separated by a "/" (forward slash). See the PCI Express ap_id naming section. For PCI Hot Plug attachment points not located in a PCI Express hierarchy, the \fBInformation\fR field will be the slot's system label, if any. This string will be obtained from the \fBslot-name\fR property of the slot's bus node. The information in the Type field is printed with or without the \fB-v\fR option. The occupant \fBType\fR field will describe the contents of the slot. There are 2 possible values: .sp .ne 2 .na \fBunknown\fR .ad .sp .6 .RS 4n The slot is empty. If a card is in the slot, the card is not configured or there is no driver for the device on the card. .RE .sp .ne 2 .na \fB\fIsubclass\fR/\fIboard\fR\fR .ad .sp .6 .RS 4n The card in the slot is either a single-function or multi-function device. .sp \fIsubclass\fR is a string representing the subclass code of the device, for example, SCSI, \fBethernet\fR, \fBpci-isa\fR, and so forth. If the card is a multi-functional device, \fBMULT\fR will get printed instead. .sp \fIboard\fR is a string representing the board type of the device. For example, hp is the string used for a PCI Hot Plug adapter, hs is used for a Hot Swap Board, nhs for a Non\(emHot Swap cPCI Board, bhs for a Basic Hot Swap cPCI Board, and fhs for a Full Hot Swap cPCI Board. .sp Most PCI cards with more than one device are not multi-function devices, but are implemented as a PCI bridge with arbitrary devices behind them. In those cases, the subclass displayed is that of the PCI bridge. Most commonly, the bridges are \fBpci-pci,\fR a generic PCI to PCI bridge or \fBstpci\fR, a semi-transparent PCI bridge. .RE .RE .sp .ne 2 .na \fB\fB-x\fR \fIhardware_function\fR\fR .ad .sp .6 .RS 4n Perform hardware specific function. These hardware specific functions should not normally change the state of a receptacle or occupant. .sp The following \fIhardware_functions\fR are supported: .sp .ne 2 .na \fBenable_slot | disable_slot\fR .ad .sp .6 .RS 4n Change the state of the slot and preserve the state of slot across reboot. Preservation of state across reboot is only supported on select platforms. .sp \fBenable_slot\fR enables the addition of hardware to this slot for hot plugging and at boot time. .sp \fBdisable_slot\fR disables the addition of hardware to this slot for hot plugging and at boot time. When a slot is disabled its condition is shown as unusable. .RE .sp .ne 2 .na \fBenable_autoconfig | disable_autoconfig\fR .ad .sp .6 .RS 4n Change the ability to autoconfigure the occupant of the slot. Only platforms that support auto configuration support this feature. .sp \fBenable_autoconfig\fR enables the ability to autoconfigure the slot. .sp \fBdiable_autoconfig\fR disables the ability to autoconfigure the slot. .sp Autoconfiguration is done through the attention button on the PCI Express platforms and through the injector/ejector latch on the CompactPCI platforms. When autoconfiguration is disabled, the attention button or latch mechanism cannot be used to configure the occupant of the slot. .RE .sp .ne 2 .na \fBled=[\fIled_sub_arg\fR],mode=[\fImode_sub_arg\fR]\fR .ad .sp .6 .RS 4n Without sub-arguments, print a list of the current LED settings. With sub-arguments, set the mode of a specific LED for a slot. .sp Specify \fIled_sub_arg\fR as \fBfault\fR, \fBpower\fR, \fBattn\fR, or \fBactive\fR. .sp Specify \fImode_sub_arg\fR as \fBon\fR, \fBoff\fR or \fBblink\fR. .sp For PCI Express, only the power and attn LEDs are valid and only the state of the \fBattn\fR LED can be changed. .sp Changing the state of the LED does not change the state of the receptacle or occupant. Normally, the LEDs are controlled by the hot plug controller, no user intervention is necessary. Use this command for testing purposes. .sp \fBCaution:\fR Changing the state of the LED can misrepresent the state of occupant or receptacle. .sp The following command prints the values of LEDs: .sp .in +2 .nf example# \fBcfgadm -x led pci0:hpc0_slot1\fR Ap_Id Led pci0:hpc0_slot1 power=on,fault=off,active=off,attn=off .fi .in -2 .sp The following command turns on the Fault LED: .sp .in +2 .nf example# \fBcfgadm -x led=fault,mode=on pci0:hpc0_slot1\fR .fi .in -2 .sp The following command turns off the Power LED: .sp .in +2 .nf example# \fBcfgadm -x led=power,mode=off pci0:hpc0_slot0\fR .fi .in -2 .sp The following command sets the \fBactive\fR LED to blink to indicate the location of the slot: .sp .in +2 .nf example# \fBcfgadm -x led=active,mode=on pci0:hpc0_slot3\fR .fi .in -2 .sp .RE .RE .SH EXAMPLES \fBExample 1 \fRPrinting out the Value of Each Slot .sp .LP The following command prints out the values of each slot: .sp .in +2 .nf example# \fBcfgadm -l\fR Ap_Id Type Receptacle Occupant Condition c0 scsi-bus connected configured unknown c1 scsi-bus connected unconfigured unknown c2 scsi-bus connected unconfigured unknown cpci_slot1 stpci/fhs connected configured ok cpci_slot2 unknown empty unconfigured unknown cpci_slot4 stpci/fhs connected configured ok cpci_slot5 stpci/fhs connected configured ok pcie7 etherne/hp connected configured ok pcie8 unknown empty unconfigured unknown pcie9 fibre/hp connected configured ok .fi .in -2 .sp .LP \fBExample 2 \fRReplacing a Card .sp .LP The following command lists all DR-capable attachment points: .sp .in +2 .nf example# \fBcfgadm\fR Type Receptacle Occupant Condition c0 scsi-bus connected configured unknown c1 scsi-bus connected unconfigured unknown c2 scsi-bus connected unconfigured unknown cpci_slot1 stpci/fhs connected configured ok cpci_slot2 unknown empty unconfigured unknown cpci_slot4 stpci/fhs connected configured ok cpci_slot5 stpci/fhs connected configured ok pcie7 etherne/hp connected configured ok pcie8 unknown empty unconfigured unknown pcie9 fibre/hp connected configured ok .fi .in -2 .sp .sp .LP The following command unconfigures and electrically disconnects the card: .sp .in +2 .nf example# \fBcfgadm -c disconnect cpci_slot4\fR .fi .in -2 .sp .sp .LP The change can be verified by entering the following command: .sp .in +2 .nf example# \fBcfgadm cpci_slot4\fR Ap_Id Type Receptacle Occupant Condition cpci_slot4 unknown disconnected unconfigured unknown .fi .in -2 .sp .sp .LP Now the card can be swapped. The following command electrically connects and configures the card: .sp .in +2 .nf example# \fBcfgadm -c configure cpci_slot4\fR .fi .in -2 .sp .sp .LP The change can be verified by entering the following command: .sp .in +2 .nf example# \fBcfgadm cpci_slot4\fR Ap_Id Type Receptacle Occupant Condition cpci_slot4 stpcipci/fhs connected configured ok .fi .in -2 .sp .LP \fBExample 3 \fRInterpreting ApIds for devices in a PCI Express topology .sp .LP The following command shows a listing for a topology with both PCI Express and PCI attachment points in I/O expansion chassis connected to hotpluggable slots at the host level: .sp .in +2 .nf example# \fBcfgadm -s cols=ap_id:info\fR Ap_Id Information iou#0-pci#0 Location: iou#0-pci#0 iou#0-pci#1 Location: iou#0-pci#1 iou#0-pci#1:iob.pci3 Location: iou#0-pci#1/iob.pci3 iou#0-pci#1:iob.pci4 Location: iou#0-pci#1/iob.pci4 iou#0-pci#2 Location: iou#0-pci#2 iou#0-pci#2:iob58071.pcie1 Location: iou#0-pci#2/iob58071.pcie1 iou#0-pci#2:iob58071.special Location: iou#0-pci#2/iob58071.special iou#0-pci#3 Location: iou#0-pci#3 iou#0-pci#3:iobBADF.pcie1 Location: iou#0-pci#3/iobBADF.pcie1 iou#0-pci#3:iobBADF.pcie2 Location: iou#0-pci#3/iobBADF.pcie2 iou#0-pci#3:iobBADF.pcie3 Location: iou#0-pci#3/iobBADF.pcie3 iou#0-pci#3:iobBADF.pci1 Location: iou#0-pci#3/iobBADF.pci1 iou#0-pci#3:iobBADF.pci2 Location: iou#0-pci#3/iobBADF.pci2 .fi .in -2 .sp .sp .LP In this example, the "iou#0-pci#[0-3]" represents the top-most hotpluggable slots in the system. Since the "iou#-pci#" form does not match any of the forms stated in the grammar specification section described earlier, we can infer that such a name for the base component in this hotplug topology is derived from the platform through the "slot-names" property. .sp .ne 2 .na \fBSlot iou#0-pci#0\fR .ad .sp .6 .RS 4n this slot is empty or its occupant is unconfigured .RE .sp .ne 2 .na \fBSlot iou#0-pci#1\fR .ad .sp .6 .RS 4n this slot contains an expansion chassis with two hotpluggable slots, "pci3" and "pci4". "pci3" and "pci4" represent two PCI slots contained within that expansion chassis with physical slot numbers 3 and 4 respectively. The expansion chassis in this case does not have or exports a \fIserial-id\fR. .RE .sp .ne 2 .na \fBSlot iou#0-pci#2\fR .ad .sp .6 .RS 4n this slot contains a third party expansion chassis with a hexadecimal \fIserial-id\fR of 58071. Within that expansion chassis are two hotpluggable slots, "pcie1" and "special". "pcie1" represents a PCI Express slot with physical slot number 1. The slot "special" has a label which is derived from the platform, hardware or firmware. .RE .sp .ne 2 .na \fBSlot iou#0-pci#3\fR .ad .sp .6 .RS 4n this slot contains a Sun expansion chassis with an FRU identifier of "BADF". This expansion chassis contains three PCI Express slots, "pcie1", "pcie2", and "pcie3" with physical slot numbers 1, 2, and 3 respectively; and two PCI slots, "pci1" and "pci2" with physical slot numbers 1 and 2, respectively. .RE .sp .LP The following command shows a listing for a topology with both PCI Express and PCI attachment points in I/O expansion chassis connected hotpluggable and non-hotpluggable host slots: .sp .in +2 .nf example# \fBcfgadm -s cols=ap_id:info\fR Ap_Id Information Slot1 Location: Slot1 Slot2:iob4ffa56.pcie1 Location: Slot2/iob4ffa56.pcie1 Slot2:iob4ffa56.pcie2 Location: Slot2/iob4ffa56.pcie2 Slot5:iob3901.pci1 Location: Slot2/iob3901.pci1 Slot5:iob3901.pci2 Location: Slot2/iob3901.pci2 .fi .in -2 .sp .sp .LP In this example, the host system only has one hotpluggable slot, "Slot1". We can infer that "Slot2" and "Slot5" are not hotpluggable slots because they do not appear as attachment points themselves in \fBcfgadm\fR. However, "Slot2" and "Slot5" each contains a third party expansion chassis with hotpluggable slots. .sp .LP The following command shows a listing for a topology with attachment points that are lacking in certain device properties: .sp .in +2 .nf example# \fBcfgadm -s cols=ap_id:info\fR Ap_Id Information px_pci7.pcie0 Location: px_pci7.pcie0 px_pci11.pcie0 Location: px_pci11.pcie0 px_pci11.pcie0:iob.pcie1 Location: px_pci11.pcie0/iob.pcie1 px_pci11.pcie0:iob.pcie2 Location: px_pci11.pcie0/iob.pcie2 px_pci11.pcie0:iob.pcie3 Location: px_pci11.pcie0/iob.pcie3 .fi .in -2 .sp .sp .LP In this example, the host system contains two hotpluggable slots, "px_pci7.pcie0" and "px_pci11.pcie0". In this case, it uses "slot-id form (3)" ( the default form) for the base \fIslot-path\fR component in the \fIabsolute-slot-path\fR because the framework could not obtain enough information to produce other more descriptive forms of higher precedence. .sp .LP Interpreting right-to-left, attachment point "px_pci7.pcie0" represents a PCI Express slot with PCI device number 0 (which does not imply a physical slot number of the same), bound to nexus driver "px_pci", instance 7. Likewise, attachment point "px_pci11.pcie0" represents a PCI Express slot with PCI device number 0 bound to driver instance 11 of px_pci. .sp .LP Under "px_pci11.pcie0" is a third party expansion chassis without a \fIserial-id\fR and with three hotpluggable PCI Express slots. .sp .LP The following command shows a listing for a topology with attachment point paths exceeding the \fIApId\fR field length limit: .sp .in +2 .nf example# \fBcfgadm -s cols=ap_id:info\fR Ap_Id Information pcie4 Location: pcie4 pcie4:iobSUNW.pcie1 Location: pcie4/iobSUNW.pcie1 pcie4:iobSUNW.pcie2 Location: pcie4/iobSUNW.pcie2 iob8879c3f3.pci1 Location: pcie4/iobSUNW.pcie2/iob8879c3f3.pci1 iob8879c3f3.pci2 Location: pcie4/iobSUNW.pcie2/iob8879c3f3.pci2 iob8879c3f3.pci3 Location: pcie4/iobSUNW.pcie2/iob8879c3f3.pci3 .fi .in -2 .sp .sp .LP In this example, there is only one hotpluggable slot, "pcie4" in the host. Connected under "pcie4" is a SUN expansion chassis with FRU identifier "SUNW". Nested under PCI Express slot "pcie2" of that expansion chassis (ApId pcie4:iobSUNW.pcie2) lies another expansion chassis with three hotpluggable PCI slots. .sp .LP Because the length of the \fIabsolute-slot-path\fR form of "pcie4/iobSUNW.pcie2/iob8879c3f3.pci1...3" exceeds the \fIApId\fR field length limit, and the leaf \fIslot-path\fR component is globally unique, "ap_id form (2)" is used, where the leaf \fIslot-path\fR component in the \fIabsolute-slot-path\fR is used as the final \fIApId\fR. .sp .LP The following command shows a listing for a topology with attachment point paths exceeding the \fIApId\fR field length limit and lacking enough information to uniquely identify the leaf \fIslot-id\fR on its own (for instance, missing the \fIserial-id\fR): .sp .in +2 .nf example# \fBcfgadm -s cols=ap_id:info\fR Ap_Id Information pcie4 Location: pcie4 pcie4:iob4567812345678.pcie3 Location: pcie4/iob4567812345678.pcie3 px_pci20.pcie0 Location: pcie4/iob4567812345678.pcie3/iob.pcie1 px_pci21.pcie0 Location: pcie4/iob4567812345678.pcie3/iob.pcie2 .fi .in -2 .sp .sp .LP In this example, there is only one hotpluggable slot, "pcie4" in the host. Connected under "pcie4" is a third party expansion chassis with hexadecimal \fIserial-id\fR 4567812345678. Nested under the PCI Express slot "pcie3" of that expansion chassis (ApId pcie4:iob4567812345678.pcie3), lies another third part expansion chassis without a \fIserial-id\fR and with two hotpluggable PCI Express slots. .sp .LP Because the length of the \fIabsolute-slot-path\fR form of "pcie4/iob4567812345678.pcie3/iob.pcie1...2" exceeds the \fIApId\fR field length limit, and the leaf \fIslot-path\fR component is not globally unique, "ap_id form (3)" is used. "ap_id form (2)" is where \fIslot-id\fR form (3) (default form) of the leaf \fIslot-path\fR component in the \fIabsolute-slot-path\fR is used as the final \fIApId\fR. .sp .LP The default form or "slot-id form (3)" of the leaf component ".../iob.pcie1"represents a PCI Express slot with device number 0, bound to driver instance 20 of "px_pci". Likewise, the default form of the leaf component ".../iob.pcie2" represents a PCI Express slot with device number 0, bound to driver instance 21 of "px_pci" .SH FILES .ne 2 .na \fB/usr/lib/cfgadm/pci.so.1\fR .ad .sp .6 .RS 4n Hardware specific library for PCI hot plugging. .RE .SH SEE ALSO .BR config_admin (3CFGADM), .BR libcfgadm (3LIB), .BR attributes (7), .BR cfgadm (8) .sp .LP \fI\fR