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- PCI Express and Standard PCI Hotplug hardware-specific commands for cfgadm
/usr/sbin/cfgadm [-f] [-y | -n] [-v] [-o hardware_options] -c function ap_id [ap_id]
/usr/sbin/cfgadm [-f] [-y | -n] [-v] [-o hardware_options] -x hardware_function ap_id [ap_id]
/usr/sbin/cfgadm [-v] [-s listing_options] [-o hardware_options] -x hardware_function ap_id [ap_id]
/usr/sbin/cfgadm [-v] [-o hardware_options] -tap_id [ap_id]
/usr/sbin/cfgadm [-v] [-o hardware_function]-h [ap_id | ap_type]
The PCI Express and Standard PCI Hotplug hardware-specific library, /usr/lib/cfgadm/shp.so.1, provides support for hotplugging PCI Express and Standard PCI Hotplug adapter cards into the respective hotpluggable slots in a system that is hotplug-capable, through the cfgadm command (see cfgadm(1M)). Support for the rest PCI Hotplug adapter cards (other than PCI Express and Standard PCI Hotplug cards) are provided by cfgadm_pci library (see cfgadm_pci(1M)). Hotplug administrative models between PCI Express Hotplug and Standard PCI Hotplug remain the same except where noted in this man page.
For PCI hotplug, each hotplug slot on a specific PCI bus is represented by an attachment point of that PCI bus.
An attachment point consist of two parts: a receptacle and an occupant. The receptacle under PCI hotplug is usually referred to as the physical hot pluggable slot; and the occupant is usually referred to as the PCI adapter card that plugs into the slot.
Attachment points are named through ap_ids. There are two types of ap_ids: logical and physical. The physical ap_id is based on the physical pathname, for example:
Whereas the logical ap_id is a shorter, more user-friendly name, for example, pcie2. The ap_type for Hotplug PCI is pci.
Note that the ap_type is not the same as the information in the Type field.
For attachment points located in a PCI Express hierarchy (that is, the parent or an ancestor is a PCI Express device), including attachment points that are not PCI Express devices themselves, the naming scheme shown below is used.
...where fru-id indicates the chassis FRU, if any, containing the slot-id.
...where fru-type is “iob” for a PCI Express expansion chassis, followed by its serial number serialid#, if available
...where slot-name is a name assigned by the platform or hardware itself. device-type is either pcie for PCI Express devices or pci for PCI devices. nexus-driver-name is the driver name for the device component; physical-slot# is the hardware slot number; and pci-device-number is the PCI device number in standard PCI nomenclature.
First, an absolute-slot-path is constructed that attempts to describe the attachment point's topological location in more physically identifiable terms for the user. This absolute-slot-path consists of slot-path components each separated by a : (colon). The leaf or leftmost slot-path component describes the device of the attachment point itself, while its right-adjacent slot-path component up to the rightmost or topmost slot-path component describes the parent up to the root devices, respectively.
Each slot-path consists of a slot-id optionally preceded by a fru-id, which identifies an expansion chassis containing the device described by slot-id (detailed below). fru-id consists of fru-type followed by an optional serialid#. fru-type is “iob” for PCI Express expansion chassis types, while serialid# is either a 64-bit hexadecimal number indicating a raw serial number obtained from the expansion chassis hardware, or an upper-case, ASCII four-character sequence for a Sun-branded expansion chassis.
Each slot-id consists of one of three possible forms:
nexus-driver-name nexus-driver-instance device-type pci-device-number
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.
The slot-names 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.
In slot-id form (2), device-type indicates the device type of the component's slot, and is either pcie for PCI Express or pci for PCI, while physical-slot#, taken from the physical-slot# property of its corresponding device node, indicates the hardware slot number of the component.
slot-id form (3) is used when all other forms cannot be successfully constructed, and is considered to be the default form. nexus-driver-name is the component's driver name; nexus-driver-instance is this driver's instance; device-type is the same as described in form (2); pci-device-number is the PCI device number as described and used for device configuration cycles in standard PCI nomenclature.
In summary of the slot-path component, expanding the optional FRU component that might precede it, slot-path will consist one of the following forms in order:
Lastly, the final form of the actual ap_id name used in cfgadm is decided as follows, specified in order of precedence:
If the absolute-slot-path can fit within the fixed length limit of cfgadm's ap_id field, then absolute-slot-path itself is used
(absolute-slot-path exceeds the ap_id length limit) If the last slot_path component is contained within an expansion chassis, and it contains a serialid#, then the last slot_path component is used. The requirement for a serialid# in this form is to ensure a globally unique ap_id.
(absolute-slot-path exceeds the ap_id length limit) The default form, slot-id form (3), of the last slot_path component is used.
Whichever final ap_id name is used, the absolute-slot-path is stored in the Information (info) field which can be displayed using the -s or -v options. This information can be used to physically locate any ap_ids named using ap_id form (2) or ap_id form (3). The absolute-slot-path 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 absolute-slot-path can include slot-path components that are not hotpluggable above the leaf or rightmost slot-path component up to the onboard host slot.
See the Examples section for a list of hotpluggable examples.
The following options are supported:
The following functions are supported for PCI hotpluggable slots:
Configure the PCI device in the slot to be used by Solaris.
Connect the slot to PCI bus.
Disconnect the slot from the PCI bus.
Logically remove the PCI device's resources from the system.
Display PCI hotplug-specific help message.
List the values of PCI Hot Plug slots.
No hardware specific options are currently defined.
Same as the generic cfgadm(1M).
This command is only supported on platforms that support testing capability on the slot.
Execute in verbose mode.
When the -v option is used with the -l option, the cfgadm command outputs information about the attachment point. For attachment points located in a PCI Express hierarchy, 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 “PCI Express ap_id Naming,” above. For PCI Hot Plug attachment points not located in a PCI Express hierarchy, see cfgadm_pci(1M). The information in the Type field is printed with or without the -v option. The occupant Type field will describe the contents of the slot. There are two possible values:
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.
The card in the slot is either a single-function or multi-function device.
subclass is a string representing the subclass code of the device, for example, SCSI, ethernet, pci-isa, and so forth. If the card is a multi-functional device, MULT will get displayed instead.
board is a string representing the board type of the device. For example, hp is the string used for a PCI Hot Plug adapter.
Perform hardware-specific function. These hardware-specific functions should not normally change the state of a receptacle or occupant.
The following hardware_function is supported:
Without subarguments, display a list of the current LED settings. With subarguments, set the mode of a specific LED for a slot.
Specify led_sub_arg as fault, power, attn, or active.
Specify mode_sub_arg as on, off, or blink.
For PCI Express, only the power and attn LEDs are valid and only the state of the attn LED can be changed.
Changing the state of the LED does not change the state of the receptacle or occupant. Normally, the LEDs are controlled by the hotplug controller, no user intervention is necessary. Use this command for testing purposes.
Caution - Changing the state of the LED can misrepresent the state of occupant or receptacle.
The following command displays the values of LEDs:
example# cfgadm -x led pcie2 Ap_Id Led pcie2 power=on,fault=off,active=off,attn=off
The following command sets the attn LED to blink to indicate the location of the slot:
example# cfgadm -x led=attn,mode=blink pcie2
Example 1 Displaying the Value of Each Slot
The following command displays the values of each slot:
example# cfgadm -l Ap_Id Type Receptacle Occupant Condition c0 scsi-bus connected configured unknown c1 scsi-bus connected unconfigured unknown c2 scsi-bus connected unconfigured unknown pcie7 etherne/hp connected configured ok pcie8 unknown empty unconfigured unknown pcie9 fibre/hp connected configured ok
Example 2 Replacing a Card
The following command lists all DR-capable attachment points:
example# cfgadm Type Receptacle Occupant Condition c0 scsi-bus connected configured unknown c1 scsi-bus connected unconfigured unknown c2 scsi-bus connected unconfigured unknown pcie7 etherne/hp connected configured ok pcie8 unknown empty unconfigured unknown pcie9 fibre/hp connected configured ok
The following command unconfigures and electrically disconnects the card identified by pcie7:
example# cfgadm -c disconnect pcie7
The change can be verified by entering the following command:
example# cfgadm pcie7 Ap_Id Type Receptacle Occupant Condition pcie7 unknown disconnected unconfigured unknown
At this point the card can be swapped. The following command electrically connects and configures the replacement card:
example# cfgadm -c configure pcie7
The change can be verified by entering the following command:
example# cfgadm pcie7 Ap_Id Type Receptacle Occupant Condition pcie7 etherne/hp connected configured ok
Example 3 Interpreting ApIds in a PCI Express Topology
The following command shows a listing for a topology with both PCI Express and PCI attachment points in an I/O expansion chassis connected to hotpluggable slots at the host level:
example# cfgadm -s cols=ap_id:info 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
In this example, the iou#0-pci#[0-3] entries represents the topmost hotpluggable slots in the system. Because the iou#n-pci#n form does not match any of the forms stated in the grammar specification section described above, 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.
The slots in the preceding output are described as follows:
This slot is empty or its occupant is unconfigured.
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 export a serial-id.
This slot contains a third-party expansion chassis with a hexadecimal serial-id 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.
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.
The following command shows a listing for a topology with both PCI Express and PCI attachment points in an I/O expansion chassis with connected hotpluggable and non-hotpluggable host slots:
example# cfgadm -s cols=ap_id:info 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
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 cfgadm. However, Slot2 and Slot5 each contains a third party expansion chassis with hotpluggable slots.
The following command shows a listing for a topology with attachment points that are lacking in certain device properties:
example# cfgadm -s cols=ap_id:info 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
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 slot-path component in the absolute-slot-path, because the framework could not obtain enough information to produce other more descriptive forms of higher precedence.
Interpreting right-to-left, attachment point px_pci7.pcie0 represents a PCI Express slot with PCIdevice number 0 (which does not imply a physical slot number of the same number), 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.
Under px_pci11.pcie0 is a third-party expansion chassis without a serial-id and with three hotpluggable PCI Express slots.
The following command shows a listing for a topology with attachment point paths exceeding the ApId field length limit:
example# cfgadm -s cols=ap_id:info 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
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.
Because the length of the absolute-slot-path form of:
...exceeds the ApId field length limit, and the leaf slot-path component is globally unique, ap_id form (2) is used, where the leaf slot-path component in the absolute-slot-path is used as the final ApId.
The following command shows a listing for a topology with attachment point paths exceeding the ApId field-length limit and lacking enough information to uniquely identify the leaf slot-id on its own (for example, missing the serial-id):
example# cfgadm -s cols=ap_id:info 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
In this example, there is only one hotpluggable slot, pcie4 in the host. Connected under pcie4 is a third-party expansion chassis with hexadecimal serial-id 4567812345678. Nested under the PCI Express slot pcie3 of that expansion chassis (ApId pcie4:iob4567812345678.pcie3), lies another third-party expansion chassis without a serial- id and with two hotpluggable PCI Express slots.
Because the length of the absolute-slot-path form of:
exceeds the ApId field length limit, and the leaf slot-path component is not globally unique, ap_id form (3) is used. ap_id form (2) is where slot-id form (3) (the default form) of the leaf slot-path component in the absolute-slot-path is used as the final ApId.
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.
Hardware-specific library for PCI Express and Standard PCI hotplugging.
See attributes(5) for descriptions of the following attributes:
The cfgadm_shp library is dependent on the hotplug service, which is managed by smf(5) under FMRI:
The service must be enabled for the cfgadm_shp library to function properly. See hotplugd(1M) for details.