Messages in this thread |  | | Date | Wed, 21 Aug 2002 11:37:44 +0200 | From | Roman Dementiev <> | Subject | 2.4.19 stops at booting when I change PCI slot of a card |
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I searched for relevant problems, but without success.
I have Supermicro P4DPE motherboard, 2-Xeons and four Ultra100 TX2 PCI IDE conrollers.
The motherboard has several PCI buses. Mapping of PCI slots to the buses is the following:
PCI Slot 1-3 (66 Mhz): bus 5 (bus number reported by linux startup messages) PCI Slot 4 (66 Mhz): bus 6 PCI-X Slot 5 (66 Mhz): bus 3 PCI-X Slot 6 (100 Mhz): bus 2
PCI-X slots configured as plain PCI 100 Mhz slot configured to function at 66 Mhz
When I plug in 4 cards into slots 1-4 or 1-3 and 5 everything is fine, Linux boots, I have ULTRA DMA 100 on each of them.
But I wanted to avoid bus bandwith saturation moving each controller to the separate bus (now I can't get more then 240 Mb/s with 8 disk. With 4 disks parallel read rate is 190 Mb/s, seems to be bottleneck in the PCI bus).
It failed (none of configurations except 1-4 and 1,2,3,5 work) linux stops after the message, corresponding to the last controller (other controllers are also reported):
PDC20268: IDE controller on PCI bus 06 dev 08 PDC20268: chipset revision 2 PDC20268: not 100% native mode: will probe irqs later PDC20268: (U)DMA Burst Bit DISABLED Primary MASTER Mode Secondary MASTER Mode. PDC20268: FORCING BURST BIT 0x50 -> 0x51 INACTIVE ide8: BM-DMA at 0x4000-0x4007, BIOS settings: hdq:pio, hdr:pio ide9: BM-DMA at 0x4008-0x400f, BIOS settings: hds:pio, hdt:pio
Any ideas? Where is problem?
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