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ARNAUD
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Joined: 23 Jan 2009
Posts: 238
Location: FRANCE
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 Posted: Thu Nov 24, 2011 7:58 am Post subject: PCIe-PMC: IRQ |
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Dear Support,
A customer is using PCIe-PMC adapter with his own PMC board.
This adapter is plugged under a computer with RTX
With this board, they are using 4 IRQ (INTA, INTB, INTC, INTD)
Today, with this PCIe-PMC adapter, they are not able to get IRQs under Windows RTX
How do these IRQs are routed to the carrier so that we can recover them under Windows?
Regarding the MSI, Can you confirm that it is supported by PCIe-PMC adapter?
Thanks
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Best Regards,
Arnaud |
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ARNAUD
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Joined: 23 Jan 2009
Posts: 238
Location: FRANCE
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| Posted: Fri Nov 25, 2011 2:59 am Post subject: |
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Dear Support,
May we have the electrical drawing of PCIe-PMC adapter, only the part which manage interruptions
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Arnaud |
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rvanbuskirk
Joined: 20 Jul 2009
Posts: 181
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| Posted: Mon Nov 28, 2011 2:30 pm Post subject: |
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| I attached page 2 of the schematic which shows the interrupts. You will want to rotate the view clockwise after opening. |
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ARNAUD
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Joined: 23 Jan 2009
Posts: 238
Location: FRANCE
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| Posted: Tue Nov 29, 2011 1:52 am Post subject: |
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Thank Ron for the schematic,
Today, the customer is not able to get the IRQ INTA, INTB, INTC, INTD under Windows with RTX.
Normally, the PCIe-PMC adapter should convert the IRQ INTA, INTB, INTC, INTD to MSI
Can you confirm that the MSI is supported?
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Best Regards,
Arnaud |
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rvanbuskirk
Joined: 20 Jul 2009
Posts: 181
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| Posted: Tue Nov 29, 2011 9:00 am Post subject: |
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| The PCI Express to PCI/PCI-X bridge used on the PCIe_PMC adapter is a PEX8114-BC13BIG. The datasheet shows some features in which one of them says "Message Signal Interrupt (MSI) support". See attached datasheet. If you need more detail I will have to ask engineering, but the IC has the Interrupt pins connected to it. |
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glenndench
Joined: 21 Feb 2012
Posts: 1
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| Posted: Tue Feb 21, 2012 5:55 pm Post subject: |
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any update?
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glenn k dench |
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dmclane
Joined: 31 Mar 2006
Posts: 77
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| Posted: Wed Feb 22, 2012 8:24 am Post subject: MSI Interrupts |
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The bridge device used is TSI384 (IDT). The manual is attached. See chapter 8 for interrupt description. Here is the description from this section of the manual.
The Tsi384’s PCI/X Interface forwards legacy INTx assertion/de-assertions in the form of Assert_INTx and Deassert_INTx messages on its PCIe link. The Tsi384 handles MSI and MSI-X transactions as PCI/X memory write transactions. When the bridge receives an MSI/MSI-X transaction
on its PCI/X Interface, it forwards it as a memory write TLP on its PCIe link. Both INTx messages and
MSI/MSI-X transactions flow through the Tsi384’s upstream posted buffer, as displayed in Figure 20.
<<The Tsi384 does not contain an MSI capability structure. The bridge cannot generate MSIs; it can only forward them as posted memory writes.>>
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Dan McLane |
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