Linux/64, kernel 2.4.0-test1 non-functionality with multiple brid
It have a controller that has 2 PCI-PCI bridge and 2 SCSI devices, however I been having a hard time getting the IA-64 kernels to load my driver. Is there a known limitation regarding multiple bus devices in these kernels and the Intel Lion systems?
Pretty much what I see is....
* pdev->irq returns with standard (PCI > Configuration Space) > irq
level INSTEAD of the IOSAPIC equivalent, which it Linux > should have > done.... which in turns results in s timeout whenever the scsi mid-layer firs the first TUR call.
Who can help?
RE: [Linux-ia64] Linux/64, kernel 2.4.0-test1 non-functionality w
IA64 kernels and the LION systems do support multiple PCI buses; some older kernels used to scan only 2 PCI buses and the newer kernels scans all the buses. LION systems with FW version older than build 30/31 enables only 2 (bus 0 and bus 1) and later FWs enables all 4 buses.
Based on the problem you mentioned it appears that you are trying to read the PCI configuration space for PCI interrupt line which will return you the standard irq and not the IOSAPIC equivalent. The drivers need to use the irq information available in the pdev structure.
Hope this helps.
Asit
-----Original Message-----
From: Peter Jarrett [mailto:[email protected]]
Sent: Thursday, June 15, 2000 6:50 PM
To: '[email protected]'
Subject: [Linux-ia64] Linux/64, kernel 2.4.0-test1 non-functionality with multiple brid ged PCI adapter --- who can help!
It have a controller that has 2 PCI-PCI bridge and 2 SCSI devices, however I been having a hard time getting the IA-64 kernels to load my driver. Is there a known limitation regarding multiple bus devices in these kernels and the Intel Lion systems?
Pretty much what I see is....
* pdev->irq returns with standard (PCI > Configuration Space) > irq
level INSTEAD of the IOSAPIC equivalent, which it Linux > should have > done.... which in turns results in s timeout whenever the scsi mid-layer firs the first TUR call.
Who can help?
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