Appendix H Sun Ultra 450 UPA/PCI System
This appendix describes information that is different in this PCI-bus-based system than that in an Sbus-based Sun system.
Banner Command Output
The output of the banner command appears as follows, indicating that it is a PCI-based system.
ok banner Sun Ultra 450 (3 X UltraSPARC-II 248MHz), Keyboard Present OpenBoot 3.5, 256 MB memory installed, Serial #8525185 Ethernet address 8:0:20:82:a5:81, Host ID: 80821581
Generic Names
Note that the output of the show-devs command shows some PCI- based nodes. PCI-based systems use generic names for devices. That is, the on-board network is named "network", and internal disks are named "diskn", with n representing the scsi target number for that disk, ("disk" with no number refers to "disk0"). Plug in PCI cards with their own FCode PROM may or may not be using generic names.
For details on generic names, see Recommended Practices available on the homepage for the Open Firmware Working Group at:
http://playground.sun.com/1275
ok show-devs /pci@6,2000 /pci@6,4000 /pci@4,2000 /pci@4,4000 /SUNW,ffb@1d,0 /SUNW,UltraSPARC-II@1,0 /mc@0,0 /pci@1f,2000 /pci@1f,4000 /counter-timer@1f,1c00 /associations /virtual-memory /memory@0,0 /aliases /options /openprom /chosen /packages /pci@6,4000/scsi@4,1 /pci@6,4000/scsi@4 /pci@6,4000/scsi@3,1 /pci@6,4000/scsi@3 /pci@6,4000/scsi@4,1/tape /pci@6,4000/scsi@4,1/disk /pci@6,4000/scsi@4/tape /pci@6,4000/scsi@4/disk /pci@6,4000/scsi@3,1/tape /pci@6,4000/scsi@3,1/disk /pci@6,4000/scsi@3/tape /pci@6,4000/scsi@3/disk /mc@0,0/bank@0,c0000000 /mc@0,0/bank@0,80000000 /mc@0,0/bank@0,40000000 /mc@0,0/bank@0,0 /mc@0,0/bank@0,40000000/dimm@0,3 /mc@0,0/bank@0,40000000/dimm@0,2 /mc@0,0/bank@0,40000000/dimm@0,1 /mc@0,0/bank@0,40000000/dimm@0,0 /mc@0,0/bank@0,0/dimm@0,3 /mc@0,0/bank@0,0/dimm@0,2 /mc@0,0/bank@0,0/dimm@0,1 /mc@0,0/bank@0,0/dimm@0,0
/pci@1f,4000/scsi@2 /pci@1f,4000/scsi@3 /pci@1f,4000/network@1,1 /pci@1f,4000/ebus@1 /pci@1f,4000/scsi@2/tape /pci@1f,4000/scsi@2/disk /pci@1f,4000/scsi@3/tape /pci@1f,4000/scsi@3/disk /pci@1f,4000/ebus@1/SUNW,CS4231@14,200000 /pci@1f,4000/ebus@1/SUNW,envctrl@14,600000 /pci@1f,4000/ebus@1/flashprom@10,0 /pci@1f,4000/ebus@1/eeprom@14,0 /pci@1f,4000/ebus@1/fdthree@14,3023f0 /pci@1f,4000/ebus@1/ecpp@14,3043bc /pci@1f,4000/ebus@1/su@14,3062f8 /pci@1f,4000/ebus@1/su@14,3083f8 /pci@1f,4000/ebus@1/se@14,400000 /pci@1f,4000/ebus@1/sc@14,500000 /pci@1f,4000/ebus@1/SUNW,pll@14,504000 /pci@1f,4000/ebus@1/power@14,724000 /pci@1f,4000/ebus@1/auxio@14,726000 /associations/slot2dev /associations/slot2led /associations/slot2disk /openprom/client-services /packages/obdiag /packages/disk-label /packages/obp-tftp /packages/deblocker /packages/terminal-emulator
SCSI Internal Busses
For Ultra 450 systems, there are two internal SCSI busses. The device "scsi" refers to the internal SCSI I/O bus for internal disks, while device "scsix" refers to the removeable-media and external (connector on back panel) internal SCSI bus.
The following shows the output of a devalias command on a Sun Ultra 450 UPA/PCI system.
ok devalias screen /SUNW,ffb@1d,0 disk /pci@1f,4000/scsi@3/disk@0,0 disk0 /pci@1f,4000/scsi@3/disk@0,0 disk1 /pci@1f,4000/scsi@3/disk@1,0 disk2 /pci@1f,4000/scsi@3/disk@2,0 disk3 /pci@1f,4000/scsi@3/disk@3,0 scsi /pci@1f,4000/scsi@3 diskx0 /pci@1f,4000/scsi@2/disk@0, diskx1 /pci@1f,4000/scsi@2/disk@1,0 diskx2 /pci@1f,4000/scsi@2/disk@2,0 diskx3 /pci@1f,4000/scsi@2/disk@3,0 cdrom /pci@1f,4000/scsi@2/disk@6,0:f tape /pci@1f,4000/scsi@2/tape@4,0 scsix /pci@1f,4000/scsi@2 pci /pci@1f,4000 pcia /pci@1f,2000 pcib /pci@1f,4000 pci0 /pci@1f,4000 pci1 /pci@1f,2000 pci2 /pci@4,4000 pci3 /pci@4,2000 pci4 /pci@6,4000 pci5 /pci@6,2000 flash /pci@1f,4000/ebus@1/flashprom@10,0 nvram /pci@1f,4000/ebus@1/eeprom@14,0 parallel /pci@1f,4000/ebus@1/ecpp@14,3043bc net /pci@1f,4000/network@1,1 ebus /pci@1f,4000/ebus@1 i2c /pci@1f,4000/ebus@1/SUNW,envctrl floppy /pci@1f,4000/ebus@1/fdthree tty /pci@1f,4000/ebus@1/se ttyb /pci@1f,4000/ebus@1/se:b ttya /pci@1f,4000/ebus@1/se:a keyboard! /pci@1f,4000/ebus@1/su@14,3083f8:forcemode keyboard /pci@1f,4000/ebus@1/su@14,3083f8 mouse /pci@1f,4000/ebus@1/su@14,3062f8
.properties for a PCI Device
When you look at properties for a device node of a PCI device, you will see a few properties that are unique to PCI devices and a few properties that have a different format than that of a SBus device. For example, the output of .properties for a PCI device:
ok cd /pci@1f,4000/scsi@3
ok .properties
interrupts 00000020
assigned-addresses 81001810 00000000 00000400 00000000 00000100
82001814 00000000 00010000 00000000 00000100
82001818 00000000 00011000 00000000 00001000
device_type scsi-2
clock-frequency 02625a00
reg 00001800 00000000 00000000 00000000 00000000
01001810 00000000 00000000 00000000 00000100
02001814 00000000 00000000 00000000 00000100
02001818 00000000 00000000 00000000 00001000
model Symbios,53C875
compatible glm
name scsi
devsel-speed 00000001
class-code 00010000
max-latency 00000040
min-grant 00000011
revision-id 00000003
device-id 0000000f
vendor-id 00001000
The following example shows generic names for devices under /pci@1f,4000/scsi@3:
ok ls f00809d8 tape f007ecdc disk
.speed Command
The command .speed shows the speed for both processors and busses attached to the system, as follows:
ok .speed CPU Speed : 248.00MHz UPA Speed : 082.66MHz PCI Bus A at UPA node 1f: 66Mhz PCI Bus B at UPA node 1f: 33Mhz PCI Bus A at UPA node 6: 66Mhz PCI Bus B at UPA node 6: 33Mhz PCI Bus A at UPA node 4: 66Mhz PCI Bus B at UPA node 4: 33Mhz
Probing of Slots For PCI Busses
The Sun Ultra 450 UPA/PCI system has ten PCI plug-in slots, distributed across six PCI busses, called pci0 to pci5; probing of slots for those busses is controlled by the following two NVRAM configuration variables:
Table H-1 NVRAM Configuration Variables|
Variable Name |
Default Value |
Description |
|---|---|---|
|
pcio-probe-list |
3 ,2, 4 |
Controls probe order of plug-in devices under pcio |
|
pci-slot-skip-list |
none |
Controls skipping of PCI plug-in slots |
pci0-probe-list specifies the device probe order on the "B" bus of the 1F PCI Controller. Device 3 is the motherboard 875 UltraSCSI bus (internal disks), device 2 is the motherboard 875 for removeable media and backpanel external connections (two motherboard 875 chips), while device 4 is an open 33MHz 32-bit slot for plug-in cards.
The remaining 5 PCI busses (pci1 to pci5) probe device slots in ascending numerical order, which order cannot be changed.
pci-slot-skip-list is a list (1 to 10) of PCI slots that should not be probed. The values "1" to "10" correspond to the backpanel PCI slots, from bottom to top.
The Ultra 450 systems provide 10 PCI plug-in slots, numbered from 1 to 10, bottom-to-top (accessible and labeled from the back of the system). The 10 PCI slots correspond to the six PCI busses as follows:
Table H-2|
PCI Slot |
PCI Bus |
PCI Device |
Width |
Speed |
|---|---|---|---|---|
|
10 | pci0 |
/pci@1f,4000/xxx@4 |
32 Bit |
33 MHz |
|
9 | pci2 |
/pci@4,4000/xxx@2 |
32 Bit |
33 MHz |
|
8 | pci2 |
/pci@4,4000/xxx@3 |
32 Bit |
33 MHz |
|
7 |
pci2 |
/pci@4,4000/xxx@4 |
64 Bit |
33MHz |
|
6 |
pci3 |
/pci@4,2000/xxx@1 |
64 Bit |
66MHz |
|
5 |
pci1 |
/pci@1f,2000/xxx@1 |
64Bit |
66MHz |
|
4 |
pci5 |
/pci@6,2000/xxx@1 |
64 Bit |
66MHz |
|
3 |
pci4 |
/pci@6,4000/xxx@2 |
64 Bit |
33MHz |
|
2 |
pci4 |
/pci@6,4000/xxx@3 |
64 Bit |
33MHz |
|
1 |
pci4 |
/pci@6,4000/xxx@4 |
64 Bit |
33MHz |
where the xxx will correspond to the particular PCI card plugged into that slot. For example, plugging an 875/glm SCSI controller card into slot 8 will yield/pci@4,4000/scsi@3,while plugging an 876 dual-SCSI card into slot 5 will yield two separate "devices" /pci@1f,2000/scsi@1 and /pci@1f,2000/scsi@1,1. Inserting a PCI-to-PCI card (such as used for a PCI bus expansion box, or as used on some multi-function PCI cards like the Sun Swift PCI card) into slot 4 will yield a device name /pci@6,2000/pci@1, and will subsequently have further devices created "underneath" this node, such as /pci@6,2000/pci@1/SUNW,hme@0,1.
Some of these slots are unavailable if certain graphics options are plugged-in. For example, installing the second FFB graphics card will occupy the physical space of PCI slots 10, 9, and 8. Other graphics options may use up the space occupied by PCI slots 10 to 4.
Probe SCSI Command
The following is a sample output of the probe-scsi command showing the two internal SCSI busses.
ok probe-scsi Primary UltraSCSI bus: Target 0 Unit 0 Disk SEAGATE ST34371W SUN4.2G8254 Target 1 Unit 0 Disk SEAGATE ST34371W SUN4.2G8254 Target 2 Unit 0 Disk SEAGATE ST34371W SUN4.2G8254 Target 3 Unit 0 Disk SEAGATE ST34371W SUN4.2G8254 Removeable-Media/External SCSI bus: Target 3 Unit 0 Removable Tape ARCHIVE VIPER 150 21531-004 SUN-04.00.0 Target 4 Unit 0 Removable Tape EXABYTE EXB-8500SMBANXH10458 Target 5 Unit 0 Removable Tape EXABYTE EXB-8200 263H Target 6 Unit 0 Removable Read Only device TOSHIBA XM-5401TASUN4XCD3485
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