Compaq ProLiant 1000 PCI Bus Numbering in a Microsoft Windows NT Environment - Page 25

Reviewing the Test 1 Configuration – Initial Configuration, Configuration B

Get Compaq ProLiant 1000 PDF manuals and user guides View all Compaq ProLiant 1000 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 25 highlights

PCI Bus Numbering in a Microsoft Windows NT Environment 25 Table 8. Test 1 - PCI BIOS bus detection in the ProLiant 8000 Bus Detection Order/ Controller Discovery Slot Number PCI Bridge/ Controller Type - Test 1 Bus Number Assignment 1st Primary Host to PCI Bus 0 Bus (O) Bridge 2nd Slot 1 Empty N/A 3rd Slot 2 Empty N/A 4th Slot 3 Empty N/A 5th Slot 4 Empty N/A 6th Secondary Host to PCI Bus 6 Bus (6) Bridge 7th Slot 5 NC3131 Bus 7 8th Slot 6 Empty N/A 9th Slot 7 Empty N/A 10th Slot 8 Empty N/A 11th Tertiary Host to PCI Bus 13 Bus (13) Bridge 12th Slot 9 Empty N/A 13th Slot 10 Empty N/A 14th Slot 11 Smart Array Bus 14 4250ES Description of PCI BIOS Discovery Process The PCI BIOS assigns 0 to the Primary Bus and continues downstream with the controller discovery. Slots 1-4 are empty, no PCI bus number assignment. The PCI BIOS discovers the Secondary Bus and assigns it bus number 6. NIC in slot 5 contains a PCI bridge and the PCI BIOS increments the PCI bus number to 7. Slots 6-8 are empty, no PCI bus number assignment. The PCI BIOS discovers the Tertiary Bus and assigns it bus number 13. Slots 9 and 10 are empty, no PCI bus number assignment. Intelligent drive array controller with PCI bridge is detected in slot 11. The PCI BIOS increments the PCI number to bus 14 and assigns it to the bridge on the controller. Reviewing the Test 1 Configuration - Initial Configuration Configuration B−Test 1, illustrated in Table 8, provides an example of how the PCI BIOS discovers controller devices and assigns bus numbers during the discovery process. As the PCI BIOS moves through the bus detection order it looks for controller devices (not the slot numbers). In this example, the PCI BIOS begins at the Host Bus and moves downstream assigning bus numbers starting at bus 0 on the Primary Bus. In this scenario, no PCI devices reside on the Primary bus, so the discovery process continues to the Secondary Bus by assigning 6 as the bus number. The NC3131 in slot 5, a bridged device, is discovered next. The PCI BIOS assigns bus 7 to the PCI bus on the bridged controller, the last PCI controller discovered on the Secondary Bus. 13UK-1200A-WWEN

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
PCI Bus Numbering in a Microsoft Windows NT Environment
25
13UK-1200A-WWEN
Table 8. Test 1 – PCI BIOS bus detection in the ProLiant 8000
Bus
Detection
Order/
Controller
Discovery
Slot
Number
PCI Bridge/
Controller Type
- Test 1
Bus Number
Assignment
Description of PCI BIOS
Discovery Process
1st
Primary
Bus (O)
Host to PCI
Bridge
Bus 0
2nd
Slot 1
Empty
N/A
3rd
Slot 2
Empty
N/A
4th
Slot 3
Empty
N/A
5th
Slot 4
Empty
N/A
6th
Secondary
Bus (6)
Host to PCI
Bridge
Bus 6
7th
Slot 5
NC3131
Bus 7
8th
Slot 6
Empty
N/A
9th
Slot 7
Empty
N/A
10th
Slot 8
Empty
N/A
11th
Tertiary
Bus (13)
Host to PCI
Bridge
Bus 13
12th
Slot 9
Empty
N/A
13th
Slot 10
Empty
N/A
14th
Slot 11
Smart Array
4250ES
Bus 14
The PCI BIOS assigns 0 to
the Primary Bus and
continues downstream with
the controller discovery.
Slots 1-4 are empty, no PCI
bus number assignment.
The PCI BIOS discovers the
Secondary Bus and assigns it
bus number 6.
NIC in slot 5 contains a PCI
bridge and the PCI BIOS
increments the PCI bus
number to 7.
Slots 6-8 are empty, no PCI
bus number assignment.
The PCI BIOS discovers the
Tertiary Bus and assigns it
bus number 13.
Slots 9 and 10 are empty, no
PCI bus number assignment.
Intelligent drive array
controller with PCI bridge is
detected in slot 11. The PCI
BIOS increments the PCI
number to bus 14 and assigns
it to the bridge on the
controller.
Reviewing the Test 1 Configuration – Initial Configuration
Configuration B
−
Test 1, illustrated in Table 8, provides an example of how the PCI BIOS
discovers controller devices and assigns bus numbers during the discovery process. As the PCI
BIOS moves through the bus detection order it looks for controller devices (not the slot numbers).
In this example, the PCI BIOS begins at the Host Bus and moves downstream assigning bus
numbers starting at bus 0 on the Primary Bus. In this scenario, no PCI devices reside on the
Primary bus, so the discovery process continues to the Secondary Bus by assigning 6 as the bus
number. The NC3131 in slot 5, a bridged device, is discovered next. The PCI BIOS assigns bus 7
to the PCI bus on the bridged controller, the last PCI controller discovered on the Secondary Bus.