Msi Interrupt Support Windows

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Introduction to Message-Signaled Interrupts - Windows ...

    https://docs.microsoft.com/en-us/windows-hardware/drivers/kernel/introduction-to-message-signaled-interrupts
    Drivers can handle MSIs that a device sends as follows: During driver installation, enable MSIs in the registry. Optionally, increase the number of interrupt messages and save some per-message settings by... In the driver's dispatch routine for IRP_MN_START_DEVICE, call IoConnectInterruptEx... ...

Hotfix for certain devices to support MSI-X interrupt mode ...

    https://support.microsoft.com/en-us/help/3070746/hotfix-for-certain-devices-to-support-msi-x-interrupt-mode-in-windows
    Jul 14, 2015 · Hotfix for certain devices to support MSI-X interrupt mode in Windows 8.1 or Windows Server 2012 R2. This article describes a hotfix for Peripheral Component Interconnect (PCI) bus driver improvements in Windows 8.1 or Windows Server 2012 R2 to support Message Signaled Interrupts (MSI-X). The hotfix has a prerequisite.

Enabling Message-Signaled Interrupts in the Registry ...

    https://docs.microsoft.com/en-us/windows-hardware/drivers/kernel/enabling-message-signaled-interrupts-in-the-registry
    Use the Interrupt Management\MessageSignaledInterruptProperties subkey of the device's hardware key to enable MSI support. The MSISupported entry of Interrupt Management\MessageSignaledInterruptProperties is a REG_DWORD value that determines whether the device supports MSIs. Set MSISupported to 1 to enable MSI support.

Handling an MSI Interrupt - Windows drivers Microsoft Docs

    https://docs.microsoft.com/en-us/windows-hardware/drivers/network/handling-an-msi-interrupt
    NDIS calls the MiniportMessageInterrupt function when a network interface card (NIC) generates an interrupt. The MessageId parameter in this function identifies the MSI-X message. MiniportMessageInterrupt should always return TRUE after processing the interrupt because message interrupts are not shared. A miniport...

How to enable MSI interrupts in Windows Embedded (WEC7 etc..)

    https://social.msdn.microsoft.com/Forums/en-US/6017de8d-85dc-4c14-8608-1eb103809341/how-to-enable-msi-interrupts-in-windows-embedded-wec7-etc
    Nov 08, 2017 · To enable MSI interrupts on Windows Compact, you will need to modify the PCI Bus Driver and possibly the kernel itself. I don't know much about MSI interrupts, but it seems like it will require that you have specialize hardware to handle the interrupts.

VFIO interrupts and how to coax Windows guests to use MSI

    https://vfio.blogspot.com/2014/09/vfio-interrupts-and-how-to-coax-windows.html
    Sep 22, 2014 · In the Linux case the device interrupts will be listed as MSI rather than APIC, in the Windows case a negative number for the interrupt indicates MSI while a positive number indicates standard INTx. Another way to tell is by looking at /proc/interrupts on the host.

Using Interrupt Resource Descriptors - Windows drivers ...

    https://docs.microsoft.com/en-us/windows-hardware/drivers/kernel/using-interrupt-resource-descriptors
    When using MSI-X, the driver receives a separate resource descriptor for each interrupt message. In Windows 8, the operating system does not support resource requests for more than 2048 interrupt messages per device function.

Windows: Line-Based vs. Message Signaled-Based Interrupts ...

    https://forums.guru3d.com/threads/windows-line-based-vs-message-signaled-based-interrupts-msi-tool.378044/
    Aug 26, 2019 · Although it remains an optional component of the standard that is seldom found in client machines, an increasing number of servers and workstations implement MSI support, which is fully supported by the all recent versions of Windows. In the MSI model, a device delivers a message to its driver by writing to a specific memory address. This action causes an interrupt, and Windows then …

windows - MSI-X interrupts in WDF - Stack Overflow

    https://stackoverflow.com/questions/16115434/msi-x-interrupts-in-wdf
    // If the device supports message-signaled interrupts (MSI), the driver must create an interrupt object // for each message that the device can support.

How to disable Message Signaled Interrupts for storahci ...

    https://social.technet.microsoft.com/Forums/windows/en-US/803569e5-5dff-4df5-9419-9765e464986b/how-to-disable-message-signaled-interrupts-for-storahcisys-win10-vs-ahci-vs-amd-sb700
    Jun 13, 2016 · The problem is the AMD SB700 southbridge. It needs a quirk to be able to work in MSI mode. Linux does not disable the legacy interrupt when enabling MSI. With this quirk my SATA controller runs beautifully in AHCI mode with MSI enabled in Linux. So long story short: How can I disable Message Signaled Interrupts for storahci.sys to check my theory?



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